diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 2d780f5..cd0fbd4 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -1,3 +1,15 @@
+[Builtin Hooks]
+clang_format = true
+
+[Builtin Hooks Options]
+# Only turn on clang-format check for the following subfolders.
+clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp
+               libs/gui/
+               libs/ui/
+               libs/vr/
+               services/surfaceflinger/
+               services/vr/
+
 [Hook Scripts]
 owners_hook = ${REPO_ROOT}/frameworks/base/tools/aosp/aosp_sha.sh ${PREUPLOAD_COMMIT} "OWNERS$"
 installd_hook = ${REPO_ROOT}/frameworks/base/tools/aosp/aosp_sha.sh ${PREUPLOAD_COMMIT} "^cmds/installd/"
diff --git a/cmds/bugreportz/bugreportz.cpp b/cmds/bugreportz/bugreportz.cpp
index 75855cf..ded0ed3 100644
--- a/cmds/bugreportz/bugreportz.cpp
+++ b/cmds/bugreportz/bugreportz.cpp
@@ -55,7 +55,7 @@
                 errno = ETIMEDOUT;
             }
             printf("FAIL:Bugreport read terminated abnormally (%s)\n", strerror(errno));
-            break;
+            return EXIT_FAILURE;
         }
 
         // Writes line by line.
@@ -71,8 +71,5 @@
     // Process final line, in case it didn't finish with newline
     write_line(line, show_progress);
 
-    if (close(s) == -1) {
-        fprintf(stderr, "WARNING: error closing socket: %s\n", strerror(errno));
-    }
     return EXIT_SUCCESS;
 }
diff --git a/cmds/bugreportz/bugreportz.h b/cmds/bugreportz/bugreportz.h
index 304e4b3..7af289b 100644
--- a/cmds/bugreportz/bugreportz.h
+++ b/cmds/bugreportz/bugreportz.h
@@ -16,6 +16,7 @@
 #define BUGREPORTZ_H
 
 // Calls dumpstate using the given socket and output its result to stdout.
+// Ownership of the socket is not transferred.
 int bugreportz(int s, bool show_progress);
 
 #endif  // BUGREPORTZ_H
diff --git a/cmds/bugreportz/main.cpp b/cmds/bugreportz/main.cpp
index a3ae1ff..74a95b0 100644
--- a/cmds/bugreportz/main.cpp
+++ b/cmds/bugreportz/main.cpp
@@ -82,7 +82,7 @@
 
     if (s == -1) {
         printf("FAIL:Failed to connect to dumpstatez service: %s\n", strerror(errno));
-        return EXIT_SUCCESS;
+        return EXIT_FAILURE;
     }
 
     // Set a timeout so that if nothing is read in 10 minutes, we'll stop
@@ -92,8 +92,16 @@
     tv.tv_sec = 10 * 60;
     tv.tv_usec = 0;
     if (setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
-        fprintf(stderr, "WARNING: Cannot set socket timeout: %s\n", strerror(errno));
+        fprintf(stderr,
+                "WARNING: Cannot set socket timeout, bugreportz might hang indefinitely: %s\n",
+                strerror(errno));
     }
 
-    bugreportz(s, show_progress);
+    int ret = bugreportz(s, show_progress);
+
+    if (close(s) == -1) {
+        fprintf(stderr, "WARNING: error closing socket: %s\n", strerror(errno));
+        ret = EXIT_FAILURE;
+    }
+    return ret;
 }
diff --git a/cmds/cmd/cmd.cpp b/cmds/cmd/cmd.cpp
index 4238531..0616add 100644
--- a/cmds/cmd/cmd.cpp
+++ b/cmds/cmd/cmd.cpp
@@ -103,12 +103,12 @@
         }
         if (is_selinux_enabled() && seLinuxContext.size() > 0) {
             String8 seLinuxContext8(seLinuxContext);
-            security_context_t tmp = NULL;
+            security_context_t tmp = nullptr;
             getfilecon(fullPath.string(), &tmp);
             Unique_SecurityContext context(tmp);
             if (checkWrite) {
                 int accessGranted = selinux_check_access(seLinuxContext8.string(), context.get(),
-                        "file", "write", NULL);
+                        "file", "write", nullptr);
                 if (accessGranted != 0) {
 #if DEBUG
                     ALOGD("openFile: failed selinux write check!");
@@ -122,7 +122,7 @@
             }
             if (checkRead) {
                 int accessGranted = selinux_check_access(seLinuxContext8.string(), context.get(),
-                        "file", "read", NULL);
+                        "file", "read", nullptr);
                 if (accessGranted != 0) {
 #if DEBUG
                     ALOGD("openFile: failed selinux read check!");
@@ -174,7 +174,7 @@
 #endif
     sp<IServiceManager> sm = defaultServiceManager();
     fflush(stdout);
-    if (sm == NULL) {
+    if (sm == nullptr) {
         ALOGW("Unable to get default service manager!");
         aerr << "cmd: Unable to get default service manager!" << endl;
         return 20;
@@ -192,7 +192,7 @@
 
         for (size_t i=0; i<services.size(); i++) {
             sp<IBinder> service = sm->checkService(services[i]);
-            if (service != NULL) {
+            if (service != nullptr) {
                 aout << "  " << services[i] << endl;
             }
         }
@@ -205,7 +205,7 @@
     }
     String16 cmd = String16(argv[1]);
     sp<IBinder> service = sm->checkService(cmd);
-    if (service == NULL) {
+    if (service == nullptr) {
         ALOGW("Can't find service %s", argv[1]);
         aerr << "cmd: Can't find service: " << argv[1] << endl;
         return 20;
diff --git a/cmds/dumpsys/dumpsys.cpp b/cmds/dumpsys/dumpsys.cpp
index 5412d4d..9bfd710 100644
--- a/cmds/dumpsys/dumpsys.cpp
+++ b/cmds/dumpsys/dumpsys.cpp
@@ -65,7 +65,7 @@
             "         -l: only list services, do not dump them\n"
             "         -t TIMEOUT_SEC: TIMEOUT to use in seconds instead of default 10 seconds\n"
             "         -T TIMEOUT_MS: TIMEOUT to use in milliseconds instead of default 10 seconds\n"
-            "         --proto: filter services that support dumping data in proto format. Dumps"
+            "         --proto: filter services that support dumping data in proto format. Dumps\n"
             "               will be in proto format.\n"
             "         --priority LEVEL: filter services based on specified priority\n"
             "               LEVEL must be one of CRITICAL | HIGH | NORMAL\n"
diff --git a/cmds/dumpsys/tests/dumpsys_test.cpp b/cmds/dumpsys/tests/dumpsys_test.cpp
index 8f60881..3ada153 100644
--- a/cmds/dumpsys/tests/dumpsys_test.cpp
+++ b/cmds/dumpsys/tests/dumpsys_test.cpp
@@ -371,8 +371,8 @@
                                    IServiceManager::DUMP_FLAG_PRIORITY_NORMAL);
     ExpectCheckService("Locksmith");
     ExpectCheckService("Valet");
-    ExpectDumpWithArgs("Locksmith", {"-a", "--dump-priority", "NORMAL"}, "dump1");
-    ExpectDumpWithArgs("Valet", {"-a", "--dump-priority", "NORMAL"}, "dump2");
+    ExpectDumpWithArgs("Locksmith", {"--dump-priority", "NORMAL", "-a"}, "dump1");
+    ExpectDumpWithArgs("Valet", {"--dump-priority", "NORMAL", "-a"}, "dump2");
 
     CallMain({"--priority", "NORMAL"});
 
diff --git a/cmds/installd/CacheItem.cpp b/cmds/installd/CacheItem.cpp
index 515f915..e29ff4c 100644
--- a/cmds/installd/CacheItem.cpp
+++ b/cmds/installd/CacheItem.cpp
@@ -73,7 +73,7 @@
         FTS *fts;
         FTSENT *p;
         char *argv[] = { (char*) path.c_str(), nullptr };
-        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
             PLOG(WARNING) << "Failed to fts_open " << path;
             return -1;
         }
diff --git a/cmds/installd/CacheTracker.cpp b/cmds/installd/CacheTracker.cpp
index ea0cd9e..a7242c3 100644
--- a/cmds/installd/CacheTracker.cpp
+++ b/cmds/installd/CacheTracker.cpp
@@ -103,7 +103,7 @@
     FTS *fts;
     FTSENT *p;
     char *argv[] = { (char*) path.c_str(), nullptr };
-    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
         PLOG(WARNING) << "Failed to fts_open " << path;
         return;
     }
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index 860a68b..2470a1d 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -95,15 +95,6 @@
 static constexpr size_t kSha256Size = 32;
 static constexpr const char* kPropApkVerityMode = "ro.apk_verity.mode";
 
-// NOTE: keep in sync with Installer
-static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8;
-static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9;
-static constexpr int FLAG_USE_QUOTA = 1 << 12;
-static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13;
-static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14;
-static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15;
-static constexpr int FLAG_FORCE = 1 << 16;
-
 namespace {
 
 constexpr const char* kDump = "android.permission.DUMP";
@@ -613,6 +604,31 @@
                 remove_path_xattr(path, kXattrInodeCodeCache);
             }
         }
+
+        auto extPath = findDataMediaPath(uuid, userId);
+        if (flags & FLAG_CLEAR_CACHE_ONLY) {
+            // Clear only cached data from shared storage
+            path = StringPrintf("%s/Android/data/%s/cache", extPath.c_str(), pkgname);
+            if (delete_dir_contents(path, true) != 0) {
+                res = error("Failed to delete contents of " + path);
+            }
+        } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) {
+            // No code cache on shared storage
+        } else {
+            // Clear everything on shared storage
+            path = StringPrintf("%s/Android/data/%s", extPath.c_str(), pkgname);
+            if (delete_dir_contents(path, true) != 0) {
+                res = error("Failed to delete contents of " + path);
+            }
+            path = StringPrintf("%s/Android/media/%s", extPath.c_str(), pkgname);
+            if (delete_dir_contents(path, true) != 0) {
+                res = error("Failed to delete contents of " + path);
+            }
+            path = StringPrintf("%s/Android/obb/%s", extPath.c_str(), pkgname);
+            if (delete_dir_contents(path, true) != 0) {
+                res = error("Failed to delete contents of " + path);
+            }
+        }
     }
     if (flags & FLAG_STORAGE_DE) {
         std::string suffix = "";
@@ -681,6 +697,20 @@
         if (delete_dir_contents_and_dir(path) != 0) {
             res = error("Failed to delete " + path);
         }
+
+        auto extPath = findDataMediaPath(uuid, userId);
+        path = StringPrintf("%s/Android/data/%s", extPath.c_str(), pkgname);
+        if (delete_dir_contents_and_dir(path, true) != 0) {
+            res = error("Failed to delete " + path);
+        }
+        path = StringPrintf("%s/Android/media/%s", extPath.c_str(), pkgname);
+        if (delete_dir_contents_and_dir(path, true) != 0) {
+            res = error("Failed to delete " + path);
+        }
+        path = StringPrintf("%s/Android/obb/%s", extPath.c_str(), pkgname);
+        if (delete_dir_contents_and_dir(path, true) != 0) {
+            res = error("Failed to delete " + path);
+        }
     }
     if (flags & FLAG_STORAGE_DE) {
         auto path = create_data_user_de_package_path(uuid_, userId, pkgname);
@@ -715,7 +745,7 @@
         auto ce_path = create_data_user_ce_path(uuid_, user);
         auto de_path = create_data_user_de_path(uuid_, user);
         char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr };
-        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
             return error("Failed to fts_open");
         }
         while ((p = fts_read(fts)) != nullptr) {
@@ -840,7 +870,7 @@
         };
 
         LOG(DEBUG) << "Copying " << from << " to " << to;
-        int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true);
+        int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, nullptr, false, true);
         if (rc != 0) {
             res = error(rc, "Failed copying " + from + " to " + to);
             goto fail;
@@ -886,7 +916,7 @@
             argv[7] = (char*) to.c_str();
 
             LOG(DEBUG) << "Copying " << from << " to " << to;
-            int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true);
+            int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, nullptr, false, true);
             if (rc != 0) {
                 res = error(rc, "Failed copying " + from + " to " + to);
                 goto fail;
@@ -899,7 +929,7 @@
             argv[7] = (char*) to.c_str();
 
             LOG(DEBUG) << "Copying " << from << " to " << to;
-            int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true);
+            int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, nullptr, false, true);
             if (rc != 0) {
                 res = error(rc, "Failed copying " + from + " to " + to);
                 goto fail;
@@ -922,20 +952,20 @@
     // Nuke everything we might have already copied
     {
         auto to = create_data_app_package_path(to_uuid, data_app_name);
-        if (delete_dir_contents(to.c_str(), 1, NULL) != 0) {
+        if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) {
             LOG(WARNING) << "Failed to rollback " << to;
         }
     }
     for (auto user : users) {
         {
             auto to = create_data_user_de_package_path(to_uuid, user, package_name);
-            if (delete_dir_contents(to.c_str(), 1, NULL) != 0) {
+            if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) {
                 LOG(WARNING) << "Failed to rollback " << to;
             }
         }
         {
             auto to = create_data_user_ce_package_path(to_uuid, user, package_name);
-            if (delete_dir_contents(to.c_str(), 1, NULL) != 0) {
+            if (delete_dir_contents(to.c_str(), 1, nullptr) != 0) {
                 LOG(WARNING) << "Failed to rollback " << to;
             }
         }
@@ -1045,10 +1075,10 @@
             auto media_path = findDataMediaPath(uuid, user) + "/Android/data/";
             char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(),
                     (char*) media_path.c_str(), nullptr };
-            if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+            if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
                 return error("Failed to fts_open");
             }
-            while ((p = fts_read(fts)) != NULL) {
+            while ((p = fts_read(fts)) != nullptr) {
                 if (p->fts_info == FTS_D && p->fts_level == 1) {
                     uid_t uid = p->fts_statp->st_uid;
                     if (multiuser_get_app_id(uid) == AID_MEDIA_RW) {
@@ -1398,11 +1428,11 @@
     FTS *fts;
     FTSENT *p;
     char *argv[] = { (char*) path.c_str(), nullptr };
-    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
         PLOG(ERROR) << "Failed to fts_open " << path;
         return;
     }
-    while ((p = fts_read(fts)) != NULL) {
+    while ((p = fts_read(fts)) != nullptr) {
         p->fts_number = p->fts_parent->fts_number;
         switch (p->fts_info) {
         case FTS_D:
@@ -1808,10 +1838,10 @@
         FTSENT *p;
         auto path = create_data_media_path(uuid_, userId);
         char *argv[] = { (char*) path.c_str(), nullptr };
-        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
             return error("Failed to fts_open " + path);
         }
-        while ((p = fts_read(fts)) != NULL) {
+        while ((p = fts_read(fts)) != nullptr) {
             char* ext;
             int64_t size = (p->fts_statp->st_blocks * 512);
             switch (p->fts_info) {
@@ -2040,7 +2070,7 @@
         }
     } else {
         if (S_ISDIR(libStat.st_mode)) {
-            if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
+            if (delete_dir_contents(libsymlink, 1, nullptr) < 0) {
                 res = error("Failed to delete " + _libsymlink);
                 goto out;
             }
@@ -2082,14 +2112,14 @@
 static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd)
 {
     execl(kIdMapPath, kIdMapPath, "--fd", target_apk, overlay_apk,
-            StringPrintf("%d", idmap_fd).c_str(), (char*)NULL);
+            StringPrintf("%d", idmap_fd).c_str(), (char*)nullptr);
     PLOG(ERROR) << "execl (" << kIdMapPath << ") failed";
 }
 
 static void run_verify_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd)
 {
     execl(kIdMapPath, kIdMapPath, "--verify", target_apk, overlay_apk,
-            StringPrintf("%d", idmap_fd).c_str(), (char*)NULL);
+            StringPrintf("%d", idmap_fd).c_str(), (char*)nullptr);
     PLOG(ERROR) << "execl (" << kIdMapPath << ") failed";
 }
 
@@ -2140,7 +2170,7 @@
 static int flatten_path(const char *prefix, const char *suffix,
         const char *overlay_path, char *idmap_path, size_t N)
 {
-    if (overlay_path == NULL || idmap_path == NULL) {
+    if (overlay_path == nullptr || idmap_path == nullptr) {
         return -1;
     }
     const size_t len_overlay_path = strlen(overlay_path);
@@ -2481,7 +2511,7 @@
                      std::to_string(shmSize));
     }
     auto data = std::unique_ptr<void, std::function<void (void *)>>(
-        mmap(NULL, contentSize, PROT_READ, MAP_SHARED, verityInputAshmem.get(), 0),
+        mmap(nullptr, contentSize, PROT_READ, MAP_SHARED, verityInputAshmem.get(), 0),
         [contentSize] (void* ptr) {
           if (ptr != MAP_FAILED) {
             munmap(ptr, contentSize);
diff --git a/cmds/installd/binder/android/os/IInstalld.aidl b/cmds/installd/binder/android/os/IInstalld.aidl
index 91e20b7..89b08e5 100644
--- a/cmds/installd/binder/android/os/IInstalld.aidl
+++ b/cmds/installd/binder/android/os/IInstalld.aidl
@@ -102,4 +102,17 @@
     boolean prepareAppProfile(@utf8InCpp String packageName,
         int userId, int appId, @utf8InCpp String profileName, @utf8InCpp String codePath,
         @nullable @utf8InCpp String dexMetadata);
+
+    const int FLAG_STORAGE_DE = 0x1;
+    const int FLAG_STORAGE_CE = 0x2;
+
+    const int FLAG_CLEAR_CACHE_ONLY = 0x10;
+    const int FLAG_CLEAR_CODE_CACHE_ONLY = 0x20;
+
+    const int FLAG_FREE_CACHE_V2 = 0x100;
+    const int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 0x200;
+    const int FLAG_FREE_CACHE_NOOP = 0x400;
+
+    const int FLAG_USE_QUOTA = 0x1000;
+    const int FLAG_FORCE = 0x2000;
 }
diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index 03a411d..66dece7 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -190,9 +190,9 @@
   strlcpy(buf, str, sizeof(buf));
   char *pBuf = buf;
 
-  while(strtok_r(pBuf, " ", &ctx) != NULL) {
+  while(strtok_r(pBuf, " ", &ctx) != nullptr) {
     count++;
-    pBuf = NULL;
+    pBuf = nullptr;
   }
 
   return count;
@@ -205,9 +205,9 @@
   char *tok;
   char *pBuf = buf;
 
-  while((tok = strtok_r(pBuf, " ", &ctx)) != NULL) {
+  while((tok = strtok_r(pBuf, " ", &ctx)) != nullptr) {
     argv[count++] = tok;
-    pBuf = NULL;
+    pBuf = nullptr;
   }
 
   return count;
@@ -216,7 +216,7 @@
 static const char* get_location_from_path(const char* path) {
     static constexpr char kLocationSeparator = '/';
     const char *location = strrchr(path, kLocationSeparator);
-    if (location == NULL) {
+    if (location == nullptr) {
         return path;
     } else {
         // Skip the separator character.
@@ -243,17 +243,17 @@
     const char* relative_input_file_name = get_location_from_path(input_file_name);
 
     char dex2oat_Xms_flag[kPropertyValueMax];
-    bool have_dex2oat_Xms_flag = get_property("dalvik.vm.dex2oat-Xms", dex2oat_Xms_flag, NULL) > 0;
+    bool have_dex2oat_Xms_flag = get_property("dalvik.vm.dex2oat-Xms", dex2oat_Xms_flag, nullptr) > 0;
 
     char dex2oat_Xmx_flag[kPropertyValueMax];
-    bool have_dex2oat_Xmx_flag = get_property("dalvik.vm.dex2oat-Xmx", dex2oat_Xmx_flag, NULL) > 0;
+    bool have_dex2oat_Xmx_flag = get_property("dalvik.vm.dex2oat-Xmx", dex2oat_Xmx_flag, nullptr) > 0;
 
     char dex2oat_threads_buf[kPropertyValueMax];
     bool have_dex2oat_threads_flag = get_property(post_bootcomplete
                                                       ? "dalvik.vm.dex2oat-threads"
                                                       : "dalvik.vm.boot-dex2oat-threads",
                                                   dex2oat_threads_buf,
-                                                  NULL) > 0;
+                                                  nullptr) > 0;
     char dex2oat_threads_arg[kPropertyValueMax + 2];
     if (have_dex2oat_threads_flag) {
         sprintf(dex2oat_threads_arg, "-j%s", dex2oat_threads_buf);
@@ -263,20 +263,20 @@
     sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
     char dex2oat_isa_features[kPropertyValueMax];
     bool have_dex2oat_isa_features = get_property(dex2oat_isa_features_key,
-                                                  dex2oat_isa_features, NULL) > 0;
+                                                  dex2oat_isa_features, nullptr) > 0;
 
     char dex2oat_isa_variant_key[kPropertyKeyMax];
     sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
     char dex2oat_isa_variant[kPropertyValueMax];
     bool have_dex2oat_isa_variant = get_property(dex2oat_isa_variant_key,
-                                                 dex2oat_isa_variant, NULL) > 0;
+                                                 dex2oat_isa_variant, nullptr) > 0;
 
     const char *dex2oat_norelocation = "-Xnorelocate";
     bool have_dex2oat_relocation_skip_flag = false;
 
     char dex2oat_flags[kPropertyValueMax];
     int dex2oat_flags_count = get_property("dalvik.vm.dex2oat-flags",
-                                 dex2oat_flags, NULL) <= 0 ? 0 : split_count(dex2oat_flags);
+                                 dex2oat_flags, nullptr) <= 0 ? 0 : split_count(dex2oat_flags);
     ALOGV("dalvik.vm.dex2oat-flags=%s\n", dex2oat_flags);
 
     // If we are booting without the real /data, don't spend time compiling.
@@ -291,14 +291,14 @@
     char app_image_format[kPropertyValueMax];
     char image_format_arg[strlen("--image-format=") + kPropertyValueMax];
     bool have_app_image_format =
-            image_fd >= 0 && get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
+            image_fd >= 0 && get_property("dalvik.vm.appimageformat", app_image_format, nullptr) > 0;
     if (have_app_image_format) {
         sprintf(image_format_arg, "--image-format=%s", app_image_format);
     }
 
     char dex2oat_large_app_threshold[kPropertyValueMax];
     bool have_dex2oat_large_app_threshold =
-            get_property("dalvik.vm.dex2oat-very-large", dex2oat_large_app_threshold, NULL) > 0;
+            get_property("dalvik.vm.dex2oat-very-large", dex2oat_large_app_threshold, nullptr) > 0;
     char dex2oat_large_app_threshold_arg[strlen("--very-large-app-threshold=") + kPropertyValueMax];
     if (have_dex2oat_large_app_threshold) {
         sprintf(dex2oat_large_app_threshold_arg,
@@ -400,7 +400,7 @@
     if (!have_dex2oat_compiler_filter_flag) {
         char dex2oat_compiler_filter_flag[kPropertyValueMax];
         have_dex2oat_compiler_filter_flag = get_property("dalvik.vm.dex2oat-filter",
-                                                         dex2oat_compiler_filter_flag, NULL) > 0;
+                                                         dex2oat_compiler_filter_flag, nullptr) > 0;
         if (have_dex2oat_compiler_filter_flag) {
             sprintf(dex2oat_compiler_filter_arg,
                     "--compiler-filter=%s",
@@ -552,7 +552,7 @@
         argv[i++] = compilation_reason_arg.c_str();
     }
     // Do not add after dex2oat_flags, they should override others for debugging.
-    argv[i] = NULL;
+    argv[i] = nullptr;
 
     execv(dex2oat_bin, (char * const *)argv);
     PLOG(ERROR) << "execv(" << dex2oat_bin << ") failed";
@@ -792,7 +792,7 @@
     }
 
     // Do not add after dex2oat_flags, they should override others for debugging.
-    argv[i] = NULL;
+    argv[i] = nullptr;
 
     execv(profman_bin, (char * const *)argv);
     PLOG(ERROR) << "execv(" << profman_bin << ") failed";
@@ -948,7 +948,7 @@
     for (const std::string& profman_arg : profman_args) {
         argv[i++] = profman_arg.c_str();
     }
-    argv[i] = NULL;
+    argv[i] = nullptr;
 
     execv(PROFMAN_BIN, (char * const *)argv);
     PLOG(ERROR) << "execv(" << PROFMAN_BIN << ") failed";
@@ -1308,7 +1308,7 @@
     }
     char app_image_format[kPropertyValueMax];
     bool have_app_image_format =
-            get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
+            get_property("dalvik.vm.appimageformat", app_image_format, nullptr) > 0;
     if (!have_app_image_format) {
         return Dex2oatFileWrapper();
     }
@@ -1629,7 +1629,7 @@
     if (class_loader_context != nullptr) {
         argv[i++] = class_loader_context_arg.c_str();
     }
-    argv[i] = NULL;
+    argv[i] = nullptr;
 
     execv(dexoptanalyzer_bin, (char * const *)argv);
     ALOGE("execv(%s) failed: %s\n", dexoptanalyzer_bin, strerror(errno));
diff --git a/cmds/installd/installd.cpp b/cmds/installd/installd.cpp
index 95ed2ff..673ff0d 100644
--- a/cmds/installd/installd.cpp
+++ b/cmds/installd/installd.cpp
@@ -107,7 +107,7 @@
         DIR *dir;
         struct dirent *dirent;
         dir = opendir("/data/user");
-        if (dir != NULL) {
+        if (dir != nullptr) {
             while ((dirent = readdir(dir))) {
                 const char *name = dirent->d_name;
 
@@ -146,10 +146,10 @@
             closedir(dir);
 
             if (access(keychain_added_dir, F_OK) == 0) {
-                delete_dir_contents(keychain_added_dir, 1, 0);
+                delete_dir_contents(keychain_added_dir, 1, nullptr);
             }
             if (access(keychain_removed_dir, F_OK) == 0) {
-                delete_dir_contents(keychain_removed_dir, 1, 0);
+                delete_dir_contents(keychain_removed_dir, 1, nullptr);
             }
         }
 
diff --git a/cmds/installd/tests/installd_cache_test.cpp b/cmds/installd/tests/installd_cache_test.cpp
index 2d58515..db09070 100644
--- a/cmds/installd/tests/installd_cache_test.cpp
+++ b/cmds/installd/tests/installd_cache_test.cpp
@@ -40,8 +40,8 @@
 constexpr int64_t kGbInBytes = 1024 * kMbInBytes;
 constexpr int64_t kTbInBytes = 1024 * kGbInBytes;
 
-static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13;
-static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14;
+#define FLAG_FREE_CACHE_V2 InstalldNativeService::FLAG_FREE_CACHE_V2
+#define FLAG_FREE_CACHE_V2_DEFY_QUOTA InstalldNativeService::FLAG_FREE_CACHE_V2_DEFY_QUOTA
 
 int get_property(const char *key, char *value, const char *default_value) {
     return property_get(key, value, default_value);
diff --git a/cmds/installd/tests/installd_service_test.cpp b/cmds/installd/tests/installd_service_test.cpp
index a5af5d7..9dad995 100644
--- a/cmds/installd/tests/installd_service_test.cpp
+++ b/cmds/installd/tests/installd_service_test.cpp
@@ -37,7 +37,7 @@
 
 constexpr const char* kTestUuid = "TEST";
 
-static constexpr int FLAG_FORCE = 1 << 16;
+#define FLAG_FORCE InstalldNativeService::FLAG_FORCE
 
 int get_property(const char *key, char *value, const char *default_value) {
     return property_get(key, value, default_value);
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index 1ff45e4..48f9eb4 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -310,7 +310,7 @@
 
     std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX);
     DIR* dir = opendir(path.c_str());
-    if (dir == NULL) {
+    if (dir == nullptr) {
         // Unable to discover other users, but at least return owner
         PLOG(ERROR) << "Failed to opendir " << path;
         return users;
@@ -340,13 +340,13 @@
     FTSENT *p;
     int64_t matchedSize = 0;
     char *argv[] = { (char*) path.c_str(), nullptr };
-    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
         if (errno != ENOENT) {
             PLOG(ERROR) << "Failed to fts_open " << path;
         }
         return -1;
     }
-    while ((p = fts_read(fts)) != NULL) {
+    while ((p = fts_read(fts)) != nullptr) {
         switch (p->fts_info) {
         case FTS_D:
         case FTS_DEFAULT:
@@ -469,7 +469,7 @@
                 continue;
             }
             subdir = fdopendir(subfd);
-            if (subdir == NULL) {
+            if (subdir == nullptr) {
                 ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno));
                 close(subfd);
                 result = -1;
@@ -495,11 +495,11 @@
 }
 
 int delete_dir_contents(const std::string& pathname, bool ignore_if_missing) {
-    return delete_dir_contents(pathname.c_str(), 0, NULL, ignore_if_missing);
+    return delete_dir_contents(pathname.c_str(), 0, nullptr, ignore_if_missing);
 }
 
 int delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing) {
-    return delete_dir_contents(pathname.c_str(), 1, NULL, ignore_if_missing);
+    return delete_dir_contents(pathname.c_str(), 1, nullptr, ignore_if_missing);
 }
 
 int delete_dir_contents(const char *pathname,
@@ -511,7 +511,7 @@
     DIR *d;
 
     d = opendir(pathname);
-    if (d == NULL) {
+    if (d == nullptr) {
         if (ignore_if_missing && (errno == ENOENT)) {
             return 0;
         }
@@ -540,12 +540,12 @@
         return -1;
     }
     d = fdopendir(fd);
-    if (d == NULL) {
+    if (d == nullptr) {
         ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno));
         close(fd);
         return -1;
     }
-    res = _delete_dir_contents(d, 0);
+    res = _delete_dir_contents(d, nullptr);
     closedir(d);
     return res;
 }
@@ -573,7 +573,7 @@
     }
 
     DIR *ds = fdopendir(sdfd);
-    if (ds == NULL) {
+    if (ds == nullptr) {
         ALOGE("Couldn't fdopendir: %s\n", strerror(errno));
         return -1;
     }
@@ -619,18 +619,18 @@
                    uid_t group)
 {
     int res = 0;
-    DIR *ds = NULL;
-    DIR *dd = NULL;
+    DIR *ds = nullptr;
+    DIR *dd = nullptr;
 
     ds = opendir(srcname);
-    if (ds == NULL) {
+    if (ds == nullptr) {
         ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno));
         return -errno;
     }
 
     mkdir(dstname, 0600);
     dd = opendir(dstname);
-    if (dd == NULL) {
+    if (dd == nullptr) {
         ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno));
         closedir(ds);
         return -errno;
@@ -964,11 +964,11 @@
     FTS *fts;
     FTSENT *p;
     char *argv[] = { (char*) path.c_str(), nullptr };
-    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) {
+    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr))) {
         PLOG(ERROR) << "Failed to fts_open " << path;
         return -1;
     }
-    while ((p = fts_read(fts)) != NULL) {
+    while ((p = fts_read(fts)) != nullptr) {
         switch (p->fts_info) {
         case FTS_DP:
             if (chmod(p->fts_path, target_mode) != 0) {
@@ -1037,7 +1037,7 @@
             }
 
             DIR* subdir = fdopendir(subdir_fd);
-            if (subdir == NULL) {
+            if (subdir == nullptr) {
                 PLOG(WARNING) << "Could not open dir path " << local_path;
                 result = false;
                 continue;
@@ -1055,7 +1055,7 @@
 
 bool collect_profiles(std::vector<std::string>* profiles_paths) {
     DIR* d = opendir(android_profiles_dir.c_str());
-    if (d == NULL) {
+    if (d == nullptr) {
         return false;
     } else {
         return collect_profiles(d, android_profiles_dir, profiles_paths);
diff --git a/cmds/surfacereplayer/proto/src/trace.proto b/cmds/surfacereplayer/proto/src/trace.proto
index 0bc08a9..68ddeb0 100644
--- a/cmds/surfacereplayer/proto/src/trace.proto
+++ b/cmds/surfacereplayer/proto/src/trace.proto
@@ -30,14 +30,13 @@
 
 message SurfaceChange {
     required int32 id = 1;
-
+    reserved 7;
     oneof SurfaceChange {
         PositionChange              position                = 2;
         SizeChange                  size                    = 3;
         AlphaChange                 alpha                   = 4;
         LayerChange                 layer                   = 5;
         CropChange                  crop                    = 6;
-        FinalCropChange             final_crop              = 7;
         MatrixChange                matrix                  = 8;
         OverrideScalingModeChange   override_scaling_mode   = 9;
         TransparentRegionHintChange transparent_region_hint = 10;
@@ -71,10 +70,6 @@
     required Rectangle rectangle = 1;
 }
 
-message FinalCropChange {
-    required Rectangle rectangle = 1;
-}
-
 message MatrixChange {
     required float dsdx = 1;
     required float dtdx = 2;
diff --git a/cmds/surfacereplayer/replayer/Replayer.cpp b/cmds/surfacereplayer/replayer/Replayer.cpp
index 4140f40..6602546 100644
--- a/cmds/surfacereplayer/replayer/Replayer.cpp
+++ b/cmds/surfacereplayer/replayer/Replayer.cpp
@@ -388,9 +388,6 @@
             case SurfaceChange::SurfaceChangeCase::kMatrix:
                 setMatrix(transaction, change.id(), change.matrix());
                 break;
-            case SurfaceChange::SurfaceChangeCase::kFinalCrop:
-                setFinalCrop(transaction, change.id(), change.final_crop());
-                break;
             case SurfaceChange::SurfaceChangeCase::kOverrideScalingMode:
                 setOverrideScalingMode(transaction, change.id(),
                         change.override_scaling_mode());
@@ -489,17 +486,7 @@
 
     Rect r = Rect(cc.rectangle().left(), cc.rectangle().top(), cc.rectangle().right(),
             cc.rectangle().bottom());
-    t.setCrop(mLayers[id], r);
-}
-
-void Replayer::setFinalCrop(SurfaceComposerClient::Transaction& t,
-        layer_id id, const FinalCropChange& fcc) {
-    ALOGV("Layer %d: Setting Final Crop -- left=%d, top=%d, right=%d, bottom=%d", id,
-            fcc.rectangle().left(), fcc.rectangle().top(), fcc.rectangle().right(),
-            fcc.rectangle().bottom());
-    Rect r = Rect(fcc.rectangle().left(), fcc.rectangle().top(), fcc.rectangle().right(),
-            fcc.rectangle().bottom());
-    t.setFinalCrop(mLayers[id], r);
+    t.setCrop_legacy(mLayers[id], r);
 }
 
 void Replayer::setMatrix(SurfaceComposerClient::Transaction& t,
@@ -570,7 +557,7 @@
 
     auto handle = mLayers[dtc.layer_id()]->getHandle();
 
-    t.deferTransactionUntil(mLayers[id], handle, dtc.frame_number());
+    t.deferTransactionUntil_legacy(mLayers[id], handle, dtc.frame_number());
 }
 
 void Replayer::setDisplaySurface(SurfaceComposerClient::Transaction& t,
diff --git a/cmds/surfacereplayer/replayer/Replayer.h b/cmds/surfacereplayer/replayer/Replayer.h
index 295403e..68390d3 100644
--- a/cmds/surfacereplayer/replayer/Replayer.h
+++ b/cmds/surfacereplayer/replayer/Replayer.h
@@ -92,8 +92,6 @@
             layer_id id, const LayerChange& lc);
     void setCrop(SurfaceComposerClient::Transaction& t,
             layer_id id, const CropChange& cc);
-    void setFinalCrop(SurfaceComposerClient::Transaction& t,
-            layer_id id, const FinalCropChange& fcc);
     void setMatrix(SurfaceComposerClient::Transaction& t,
             layer_id id, const MatrixChange& mc);
     void setOverrideScalingMode(SurfaceComposerClient::Transaction& t,
diff --git a/data/etc/android.hardware.face.xml b/data/etc/android.hardware.face.xml
new file mode 100644
index 0000000..abd23fb
--- /dev/null
+++ b/data/etc/android.hardware.face.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- This is the standard set of features for a biometric face authentication sensor. -->
+<permissions>
+    <feature name="android.hardware.face" />
+</permissions>
diff --git a/headers/media_plugin/media/arcvideobridge/IArcVideoBridge.h b/headers/media_plugin/media/arcvideobridge/IArcVideoBridge.h
deleted file mode 100644
index b32c92e..0000000
--- a/headers/media_plugin/media/arcvideobridge/IArcVideoBridge.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_IARC_VIDEO_BRIDGE_H
-#define ANDROID_IARC_VIDEO_BRIDGE_H
-
-#include <arc/IArcBridgeService.h>
-#include <binder/IInterface.h>
-#include <utils/Errors.h>
-
-namespace android {
-
-class IArcVideoBridge : public IInterface {
-public:
-    DECLARE_META_INTERFACE(ArcVideoBridge);
-
-    // Returns MojoBootstrapResult for creating mojo ipc channel of
-    // VideoAcceleratorFactory.
-    virtual ::arc::MojoBootstrapResult bootstrapVideoAcceleratorFactory() = 0;
-
-    // Get the version of the remote VideoHost on Chromium side.
-    virtual int32_t hostVersion() = 0;
-};
-
-class BnArcVideoBridge : public BnInterface<IArcVideoBridge> {
-public:
-    virtual status_t onTransact(
-            uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags = 0);
-};
-
-};  // namespace android
-
-#endif // ANDROID_IARC_VIDEO_BRIDGE_H
diff --git a/include/android/input.h b/include/android/input.h
index 6810901..cfade6c 100644
--- a/include/android/input.h
+++ b/include/android/input.h
@@ -83,7 +83,7 @@
 };
 
 /**
- * Meta key / modifer state.
+ * Meta key / modifier state.
  */
 enum {
     /** No meta keys are pressed. */
diff --git a/include/android/system_fonts.h b/include/android/system_fonts.h
new file mode 100644
index 0000000..79f666b
--- /dev/null
+++ b/include/android/system_fonts.h
@@ -0,0 +1,350 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file system_fonts.h
+ * @brief Provides the system font configurations.
+ *
+ * These APIs provides the list of system installed font files with additional metadata about the
+ * font.
+ *
+ * The ASystemFontIterator_open method will give you an iterator which can iterate all system
+ * installed font files as shown in the following example.
+ *
+ * <code>
+ *   ASystemFontIterator* iterator = ASystemFontIterator_open();
+ *   ASystemFont* font = NULL;
+ *
+ *   while ((font = ASystemFontIterator_next(iterator)) != nullptr) {
+ *       // Look if the font is your desired one.
+ *       if (ASystemFont_getWeight(font) == 400 && !ASystemFont_isItalic(font)
+ *           && ASystemFont_getLocale(font) == NULL) {
+ *           break;
+ *       }
+ *       ASystemFont_close(font);
+ *   }
+ *   ASystemFontIterator_close(iterator);
+ *
+ *   int fd = open(ASystemFont_getFontFilePath(font), O_RDONLY);
+ *   int collectionIndex = ASystemFont_getCollectionINdex(font);
+ *   std::vector<std::pair<uint32_t, float>> variationSettings;
+ *   for (size_t i = 0; i < ASystemFont_getAxisCount(font); ++i) {
+ *       variationSettings.push_back(std::make_pair(
+ *           ASystemFont_getAxisTag(font, i),
+ *           ASystemFont_getAxisValue(font, i)));
+ *   }
+ *   ASystemFont_close(font);
+ *
+ *   // Use this font for your text rendering engine.
+ *
+ * </code>
+ *
+ * Available since API level 29.
+ */
+
+#ifndef ANDROID_SYSTEM_FONTS_H
+#define ANDROID_SYSTEM_FONTS_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/cdefs.h>
+
+/******************************************************************
+ *
+ * IMPORTANT NOTICE:
+ *
+ *   This file is part of Android's set of stable system headers
+ *   exposed by the Android NDK (Native Development Kit).
+ *
+ *   Third-party source AND binary code relies on the definitions
+ *   here to be FROZEN ON ALL UPCOMING PLATFORM RELEASES.
+ *
+ *   - DO NOT MODIFY ENUMS (EXCEPT IF YOU ADD NEW 32-BIT VALUES)
+ *   - DO NOT MODIFY CONSTANTS OR FUNCTIONAL MACROS
+ *   - DO NOT CHANGE THE SIGNATURE OF FUNCTIONS IN ANY WAY
+ *   - DO NOT CHANGE THE LAYOUT OR SIZE OF STRUCTURES
+ */
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 29
+
+enum {
+    /** The minimum value fot the font weight value. */
+    ASYSTEM_FONT_WEIGHT_MIN = 0,
+
+    /** A font weight value for the thin weight. */
+    ASYSTEM_FONT_WEIGHT_THIN = 100,
+
+    /** A font weight value for the extra-light weight. */
+    ASYSTEM_FONT_WEIGHT_EXTRA_LIGHT = 200,
+
+    /** A font weight value for the light weight. */
+    ASYSTEM_FONT_WEIGHT_LIGHT = 300,
+
+    /** A font weight value for the normal weight. */
+    ASYSTEM_FONT_WEIGHT_NORMAL = 400,
+
+    /** A font weight value for the medium weight. */
+    ASYSTEM_FONT_WEIGHT_MEDIUM = 500,
+
+    /** A font weight value for the semi-bold weight. */
+    ASYSTEM_FONT_WEIGHT_SEMI_BOLD = 600,
+
+    /** A font weight value for the bold weight. */
+    ASYSTEM_FONT_WEIGHT_BOLD = 700,
+
+    /** A font weight value for the extra-bold weight. */
+    ASYSTEM_FONT_WEIGHT_EXTRA_BOLD = 800,
+
+    /** A font weight value for the black weight. */
+    ASYSTEM_FONT_WEIGHT_BLACK = 900,
+
+    /** The maximum value for the font weight value. */
+    ASYSTEM_FONT_WEIGHT_MAX = 1000
+};
+
+/**
+ * ASystemFontIterator provides access to the system font configuration.
+ *
+ * ASystemFontIterator is an iterator for all available system font settings.
+ * This iterator is not a thread-safe object. Do not pass this iterator to other threads.
+ */
+struct ASystemFontIterator;
+
+/**
+ * ASystemFont provides information of the single system font configuration.
+ */
+struct ASystemFont;
+
+/**
+ * Create a system font iterator.
+ *
+ * Use ASystemFont_close() to close the iterator.
+ *
+ * \return a pointer for a newly allocated iterator, nullptr on failure.
+ */
+ASystemFontIterator* _Nullable ASystemFontIterator_open() __INTRODUCED_IN(29);
+
+/**
+ * Close an opened system font iterator, freeing any related resources.
+ *
+ * \param a pointer of an iterator for the system fonts. Do nothing if NULL is passed.
+ */
+void ASystemFontIterator_close(ASystemFontIterator* _Nullable iterator) __INTRODUCED_IN(29);
+
+/**
+ * Move to the next system font.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return true if more system fonts are available, otherwise false.
+ */
+ASystemFont* _Nullable ASystemFontIterator_next(ASystemFontIterator* _Nonnull iterator) __INTRODUCED_IN(29);
+
+/**
+ * Close an ASystemFont returned by ASystemFontIterator_next.
+ *
+ * \param font a font returned by ASystemFontIterator_next. Do nothing if NULL is passed.
+ */
+void ASystemFont_close(ASystemFont* _Nullable font) __INTRODUCED_IN(29);
+
+
+/**
+ * Return an absolute path to the current font file.
+ *
+ * Here is a list of font formats returned by this method:
+ * <ul>
+ *   <li>OpenType</li>
+ *   <li>OpenType Font Collection</li>
+ *   <li>TrueType</li>
+ *   <li>TrueType Collection</li>
+ * </ul>
+ * The file extension could be one of *.otf, *.ttf, *.otc or *.ttc.
+ *
+ * The font file returned is guaranteed to be opend with O_RDONLY.
+ * Note that the returned pointer is valid until ASystemFont_close() is called for the given font.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return a string of the font file path.
+ */
+const char* _Nonnull ASystemFont_getFontFilePath(const ASystemFont* _Nonnull font) __INTRODUCED_IN(29);
+
+/**
+ * Return a weight value associated with the current font.
+ *
+ * The weight values are positive and less than or equal to 1000.
+ * Here are pairs of the common names and their values.
+ * <p>
+ *  <table>
+ *  <thead>
+ *  <tr>
+ *  <th align="center">Value</th>
+ *  <th align="center">Name</th>
+ *  <th align="center">NDK Definition</th>
+ *  </tr>
+ *  </thead>
+ *  <tbody>
+ *  <tr>
+ *  <td align="center">100</td>
+ *  <td align="center">Thin</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_THIN}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">200</td>
+ *  <td align="center">Extra Light (Ultra Light)</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_EXTRA_LIGHT}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">300</td>
+ *  <td align="center">Light</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_LIGHT}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">400</td>
+ *  <td align="center">Normal (Regular)</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_NORMAL}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">500</td>
+ *  <td align="center">Medium</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_MEDIUM}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">600</td>
+ *  <td align="center">Semi Bold (Demi Bold)</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_SEMI_BOLD}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">700</td>
+ *  <td align="center">Bold</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_BOLD}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">800</td>
+ *  <td align="center">Extra Bold (Ultra Bold)</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_EXTRA_BOLD}</td>
+ *  </tr>
+ *  <tr>
+ *  <td align="center">900</td>
+ *  <td align="center">Black (Heavy)</td>
+ *  <td align="center">{@link ASYSTEM_FONT_WEIGHT_BLACK}</td>
+ *  </tr>
+ *  </tbody>
+ * </p>
+ * Note that the weight value may fall in between above values, e.g. 250 weight.
+ *
+ * For more information about font weight, read [OpenType usWeightClass](https://docs.microsoft.com/en-us/typography/opentype/spec/os2#usweightclass)
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return a positive integer less than or equal to {@link ASYSTEM_FONT_MAX_WEIGHT} is returned.
+ */
+uint16_t ASystemFont_getWeight(const ASystemFont* _Nonnull font) __INTRODUCED_IN(29);
+
+/**
+ * Return true if the current font is italic, otherwise returns false.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return true if italic, otherwise false.
+ */
+bool ASystemFont_isItalic(const ASystemFont* _Nonnull font) __INTRODUCED_IN(29);
+
+/**
+ * Return a IETF BCP47 compliant language tag associated with the current font.
+ *
+ * For information about IETF BCP47, read [Locale.forLanguageTag(java.lang.String)](https://developer.android.com/reference/java/util/Locale.html#forLanguageTag(java.lang.String)")
+ *
+ * Note that the returned pointer is valid until ASystemFont_close() is called.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return a IETF BCP47 compliant langauge tag or nullptr if not available.
+ */
+const char* _Nullable ASystemFont_getLocale(const ASystemFont* _Nonnull font) __INTRODUCED_IN(29);
+
+/**
+ * Return a font collection index value associated with the current font.
+ *
+ * In case the target font file is a font collection (e.g. .ttc or .otc), this
+ * returns a non-negative value as an font offset in the collection. This
+ * always returns 0 if the target font file is a regular font.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return a font collection index.
+ */
+size_t ASystemFont_getCollectionIndex(const ASystemFont* _Nonnull font) __INTRODUCED_IN(29);
+
+/**
+ * Return a count of font variation settings associated with the current font
+ *
+ * The font variation settings are provided as multiple tag-values pairs.
+ *
+ * For example, bold italic font may have following font variation settings:
+ *     'wght' 700, 'slnt' -12
+ * In this case, ASystemFont_getAxisCount returns 2 and ASystemFont_getAxisTag
+ * and ASystemFont_getAxisValue will return following values.
+ * <code>
+ *     ASystemFont* font = ASystemFontIterator_next(ite);
+ *
+ *     // Returns the number of axes
+ *     ASystemFont_getAxisCount(font);  // Returns 2
+ *
+ *     // Returns the tag-value pair for the first axis.
+ *     ASystemFont_getAxisTag(font, 0);  // Returns 'wght'(0x77676874)
+ *     ASystemFont_getAxisValue(font, 0);  // Returns 700.0
+ *
+ *     // Returns the tag-value pair for the second axis.
+ *     ASystemFont_getAxisTag(font, 1);  // Returns 'slnt'(0x736c6e74)
+ *     ASystemFont_getAxisValue(font, 1);  // Returns -12.0
+ * </code>
+ *
+ * For more information about font variation settings, read [Font Variations Table](https://docs.microsoft.com/en-us/typography/opentype/spec/fvar)
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \return a number of font variation settings.
+ */
+size_t ASystemFont_getAxisCount(const ASystemFont* _Nonnull font) __INTRODUCED_IN(29);
+
+
+/**
+ * Return an OpenType axis tag associated with the current font.
+ *
+ * See ASystemFont_getAxisCount for more details.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \param an index to the font variation settings. Passing value larger than or
+ *        equal to {@link ASystemFont_getAxisCount} is not allowed.
+ * \return an OpenType axis tag value for the given font variation setting.
+ */
+uint32_t ASystemFont_getAxisTag(const ASystemFont* _Nonnull font, uint32_t axisIndex)
+      __INTRODUCED_IN(29);
+
+/**
+ * Return an OpenType axis value associated with the current font.
+ *
+ * See ASystemFont_getAxisCount for more details.
+ *
+ * \param iterator an iterator for the system fonts. Passing NULL is not allowed.
+ * \param an index to the font variation settings. Passing value larger than or
+ *         equal to {@link ASYstemFont_getAxisCount} is not allwed.
+ * \return a float value for the given font variation setting.
+ */
+float ASystemFont_getAxisValue(const ASystemFont* _Nonnull font, uint32_t axisIndex)
+      __INTRODUCED_IN(29);
+
+#endif // __ANDROID_API__ >= 29
+
+__END_DECLS
+
+#endif // ANDROID_SYSTEM_FONTS_H
diff --git a/include/input/DisplayViewport.h b/include/input/DisplayViewport.h
index 86da4d3..0de3bb7 100644
--- a/include/input/DisplayViewport.h
+++ b/include/input/DisplayViewport.h
@@ -17,11 +17,37 @@
 #ifndef _LIBINPUT_DISPLAY_VIEWPORT_H
 #define _LIBINPUT_DISPLAY_VIEWPORT_H
 
+#include <android-base/stringprintf.h>
 #include <ui/DisplayInfo.h>
 #include <input/Input.h>
 
+using android::base::StringPrintf;
+
 namespace android {
 
+/**
+ * Describes the different type of viewports supported by input flinger.
+ * Keep in sync with values in InputManagerService.java.
+ */
+enum class ViewportType : int32_t {
+    VIEWPORT_INTERNAL = 1,
+    VIEWPORT_EXTERNAL = 2,
+    VIEWPORT_VIRTUAL = 3,
+};
+
+static const char* viewportTypeToString(ViewportType type) {
+    switch(type) {
+        case ViewportType::VIEWPORT_INTERNAL:
+            return "INTERNAL";
+        case ViewportType::VIEWPORT_EXTERNAL:
+            return "EXTERNAL";
+        case ViewportType::VIEWPORT_VIRTUAL:
+            return "VIRTUAL";
+        default:
+            return "UNKNOWN";
+    }
+}
+
 /*
  * Describes how coordinates are mapped on a physical display.
  * See com.android.server.display.DisplayViewport.
@@ -39,13 +65,14 @@
     int32_t physicalBottom;
     int32_t deviceWidth;
     int32_t deviceHeight;
-    String8 uniqueId;
+    std::string uniqueId;
+    ViewportType type;
 
     DisplayViewport() :
             displayId(ADISPLAY_ID_NONE), orientation(DISPLAY_ORIENTATION_0),
             logicalLeft(0), logicalTop(0), logicalRight(0), logicalBottom(0),
             physicalLeft(0), physicalTop(0), physicalRight(0), physicalBottom(0),
-            deviceWidth(0), deviceHeight(0) {
+            deviceWidth(0), deviceHeight(0), uniqueId(), type(ViewportType::VIEWPORT_INTERNAL) {
     }
 
     bool operator==(const DisplayViewport& other) const {
@@ -61,7 +88,8 @@
                 && physicalBottom == other.physicalBottom
                 && deviceWidth == other.deviceWidth
                 && deviceHeight == other.deviceHeight
-                && uniqueId == other.uniqueId;
+                && uniqueId == other.uniqueId
+                && type == other.type;
     }
 
     bool operator!=(const DisplayViewport& other) const {
@@ -86,17 +114,22 @@
         deviceWidth = width;
         deviceHeight = height;
         uniqueId.clear();
+        type = ViewportType::VIEWPORT_INTERNAL;
     }
-};
 
-/**
- * Describes the different type of viewports supported by input flinger.
- * Keep in sync with values in InputManagerService.java.
- */
-enum class ViewportType : int32_t {
-    VIEWPORT_INTERNAL = 1,
-    VIEWPORT_EXTERNAL = 2,
-    VIEWPORT_VIRTUAL = 3,
+    std::string toString() const {
+        return StringPrintf("Viewport %s: displayId=%d, orientation=%d, "
+            "logicalFrame=[%d, %d, %d, %d], "
+            "physicalFrame=[%d, %d, %d, %d], "
+            "deviceSize=[%d, %d]",
+            viewportTypeToString(type),
+            displayId, orientation,
+            logicalLeft, logicalTop,
+            logicalRight, logicalBottom,
+            physicalLeft, physicalTop,
+            physicalRight, physicalBottom,
+            deviceWidth, deviceHeight);
+    }
 };
 
 } // namespace android
diff --git a/include/input/Input.h b/include/input/Input.h
index cfcafab..819a89f 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -25,7 +25,6 @@
 #include <utils/BitSet.h>
 #include <utils/KeyedVector.h>
 #include <utils/RefBase.h>
-#include <utils/String8.h>
 #include <utils/Timers.h>
 #include <utils/Vector.h>
 #include <stdint.h>
@@ -302,12 +301,18 @@
 
     inline void setSource(int32_t source) { mSource = source; }
 
+    inline int32_t getDisplayId() const { return mDisplayId; }
+
+    inline void setDisplayId(int32_t displayId) { mDisplayId = displayId; }
+
+
 protected:
-    void initialize(int32_t deviceId, int32_t source);
+    void initialize(int32_t deviceId, int32_t source, int32_t displayId);
     void initialize(const InputEvent& from);
 
     int32_t mDeviceId;
     int32_t mSource;
+    int32_t mDisplayId;
 };
 
 /*
@@ -339,10 +344,11 @@
 
     static const char* getLabel(int32_t keyCode);
     static int32_t getKeyCodeFromLabel(const char* label);
-    
+
     void initialize(
             int32_t deviceId,
             int32_t source,
+            int32_t displayId,
             int32_t action,
             int32_t flags,
             int32_t keyCode,
@@ -556,6 +562,7 @@
     void initialize(
             int32_t deviceId,
             int32_t source,
+            int32_t displayId,
             int32_t action,
             int32_t actionButton,
             int32_t flags,
diff --git a/services/inputflinger/InputApplication.h b/include/input/InputApplication.h
similarity index 98%
rename from services/inputflinger/InputApplication.h
rename to include/input/InputApplication.h
index 724fc2c..9b365b9 100644
--- a/services/inputflinger/InputApplication.h
+++ b/include/input/InputApplication.h
@@ -17,6 +17,8 @@
 #ifndef _UI_INPUT_APPLICATION_H
 #define _UI_INPUT_APPLICATION_H
 
+#include <string>
+
 #include <input/Input.h>
 #include <utils/RefBase.h>
 #include <utils/Timers.h>
diff --git a/include/input/InputDevice.h b/include/input/InputDevice.h
index 1ea69d3..34d164c 100644
--- a/include/input/InputDevice.h
+++ b/include/input/InputDevice.h
@@ -31,9 +31,9 @@
     }
 
     // Information provided by the kernel.
-    String8 name;
-    String8 location;
-    String8 uniqueId;
+    std::string name;
+    std::string location;
+    std::string uniqueId;
     uint16_t bus;
     uint16_t vendor;
     uint16_t product;
@@ -45,7 +45,7 @@
     // It is hashed from whatever kernel provided information is available.
     // Ideally, the way this value is computed should not change between Android releases
     // because that would invalidate persistent settings that rely on it.
-    String8 descriptor;
+    std::string descriptor;
 
     // A value added to uniquely identify a device in the absence of a unique id. This
     // is intended to be a minimum way to distinguish from other active devices and may
@@ -73,16 +73,16 @@
     };
 
     void initialize(int32_t id, int32_t generation, int32_t controllerNumber,
-            const InputDeviceIdentifier& identifier, const String8& alias, bool isExternal,
+            const InputDeviceIdentifier& identifier, const std::string& alias, bool isExternal,
             bool hasMic);
 
     inline int32_t getId() const { return mId; }
     inline int32_t getControllerNumber() const { return mControllerNumber; }
     inline int32_t getGeneration() const { return mGeneration; }
     inline const InputDeviceIdentifier& getIdentifier() const { return mIdentifier; }
-    inline const String8& getAlias() const { return mAlias; }
-    inline const String8& getDisplayName() const {
-        return mAlias.isEmpty() ? mIdentifier.name : mAlias;
+    inline const std::string& getAlias() const { return mAlias; }
+    inline const std::string& getDisplayName() const {
+        return mAlias.empty() ? mIdentifier.name : mAlias;
     }
     inline bool isExternal() const { return mIsExternal; }
     inline bool hasMic() const { return mHasMic; }
@@ -121,7 +121,7 @@
     int32_t mGeneration;
     int32_t mControllerNumber;
     InputDeviceIdentifier mIdentifier;
-    String8 mAlias;
+    std::string mAlias;
     bool mIsExternal;
     bool mHasMic;
     uint32_t mSources;
@@ -149,7 +149,7 @@
  *
  * Returns an empty string if not found.
  */
-extern String8 getInputDeviceConfigurationFilePathByDeviceIdentifier(
+extern std::string getInputDeviceConfigurationFilePathByDeviceIdentifier(
         const InputDeviceIdentifier& deviceIdentifier,
         InputDeviceConfigurationFileType type);
 
@@ -162,8 +162,8 @@
  *
  * Returns an empty string if not found.
  */
-extern String8 getInputDeviceConfigurationFilePathByName(
-        const String8& name, InputDeviceConfigurationFileType type);
+extern std::string getInputDeviceConfigurationFilePathByName(
+        const std::string& name, InputDeviceConfigurationFileType type);
 
 } // namespace android
 
diff --git a/include/input/InputEventLabels.h b/include/input/InputEventLabels.h
index 4b33a96..6d072a3 100644
--- a/include/input/InputEventLabels.h
+++ b/include/input/InputEventLabels.h
@@ -326,7 +326,7 @@
     DEFINE_KEYCODE(ALL_APPS),
     DEFINE_KEYCODE(REFRESH),
 
-    { NULL, 0 }
+    { nullptr, 0 }
 };
 
 static const InputEventLabel AXES[] = {
@@ -375,7 +375,7 @@
 
     // NOTE: If you add a new axis here you must also add it to several other files.
     //       Refer to frameworks/base/core/java/android/view/MotionEvent.java for the full list.
-    { NULL, 0 }
+    { nullptr, 0 }
 };
 
 static const InputEventLabel LEDS[] = {
@@ -396,7 +396,7 @@
     DEFINE_LED(CONTROLLER_4),
 
     // NOTE: If you add new LEDs here, you must also add them to Input.h
-    { NULL, 0 }
+    { nullptr, 0 }
 };
 
 static const InputEventLabel FLAGS[] = {
@@ -404,7 +404,7 @@
     DEFINE_FLAG(FUNCTION),
     DEFINE_FLAG(GESTURE),
 
-    { NULL, 0 }
+    { nullptr, 0 }
 };
 
 static int lookupValueByLabel(const char* literal, const InputEventLabel *list) {
@@ -424,7 +424,7 @@
         }
         list++;
     }
-    return NULL;
+    return nullptr;
 }
 
 static inline int32_t getKeyCodeByLabel(const char* label) {
@@ -435,7 +435,7 @@
     if (keyCode >= 0 && keyCode < static_cast<int32_t>(size(KEYCODES))) {
         return KEYCODES[keyCode].literal;
     }
-    return NULL;
+    return nullptr;
 }
 
 static inline uint32_t getKeyFlagByLabel(const char* label) {
diff --git a/include/input/InputTransport.h b/include/input/InputTransport.h
index 1ea2c2c..4782c9b 100644
--- a/include/input/InputTransport.h
+++ b/include/input/InputTransport.h
@@ -27,6 +27,8 @@
  * The InputConsumer is used by the application to receive events from the input dispatcher.
  */
 
+#include <string>
+
 #include <input/Input.h>
 #include <utils/Errors.h>
 #include <utils/Timers.h>
@@ -35,6 +37,7 @@
 #include <utils/BitSet.h>
 
 namespace android {
+class Parcel;
 
 /*
  * Intermediate representation used to send input events and related signals.
@@ -141,6 +144,7 @@
     virtual ~InputChannel();
 
 public:
+    InputChannel() = default;
     InputChannel(const std::string& name, int fd);
 
     /* Creates a pair of input channels.
@@ -181,9 +185,14 @@
     /* Returns a new object that has a duplicate of this channel's fd. */
     sp<InputChannel> dup() const;
 
+    status_t write(Parcel& out) const;
+    status_t read(const Parcel& from);
+
 private:
+    void setFd(int fd);
+
     std::string mName;
-    int mFd;
+    int mFd = -1;
 };
 
 /*
@@ -212,6 +221,7 @@
             uint32_t seq,
             int32_t deviceId,
             int32_t source,
+            int32_t displayId,
             int32_t action,
             int32_t flags,
             int32_t keyCode,
@@ -305,7 +315,7 @@
      * Other errors probably indicate that the channel is broken.
      */
     status_t consume(InputEventFactoryInterface* factory, bool consumeBatches,
-            nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent, int32_t* displayId);
+            nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent);
 
     /* Sends a finished signal to the publisher to inform it that the message
      * with the specified sequence number has finished being process and whether
@@ -460,10 +470,9 @@
     Vector<SeqChain> mSeqChains;
 
     status_t consumeBatch(InputEventFactoryInterface* factory,
-            nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent, int32_t* displayId);
+            nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent);
     status_t consumeSamples(InputEventFactoryInterface* factory,
-            Batch& batch, size_t count, uint32_t* outSeq, InputEvent** outEvent,
-            int32_t* displayId);
+            Batch& batch, size_t count, uint32_t* outSeq, InputEvent** outEvent);
 
     void updateTouchState(InputMessage& msg);
     void resampleTouchState(nsecs_t frameTime, MotionEvent* event,
diff --git a/services/inputflinger/InputWindow.h b/include/input/InputWindow.h
similarity index 97%
rename from services/inputflinger/InputWindow.h
rename to include/input/InputWindow.h
index 5a48375..7c284dd 100644
--- a/services/inputflinger/InputWindow.h
+++ b/include/input/InputWindow.h
@@ -27,7 +27,7 @@
 #include "InputApplication.h"
 
 namespace android {
-
+class Parcel;
 
 /*
  * Describes the properties of a window that can receive input.
@@ -151,6 +151,9 @@
     bool supportsSplitTouch() const;
 
     bool overlaps(const InputWindowInfo* other) const;
+
+    status_t write(Parcel& output) const;
+    static InputWindowInfo read(const Parcel& from);
 };
 
 
@@ -168,9 +171,7 @@
         return mInfo;
     }
 
-    inline sp<InputChannel> getInputChannel() const {
-        return mInfo ? mInfo->inputChannel : NULL;
-    }
+    sp<InputChannel> getInputChannel() const;
 
     inline std::string getName() const {
         return mInfo ? mInfo->name : "<invalid>";
diff --git a/include/input/KeyCharacterMap.h b/include/input/KeyCharacterMap.h
index 33d2757..9f4559f 100644
--- a/include/input/KeyCharacterMap.h
+++ b/include/input/KeyCharacterMap.h
@@ -27,7 +27,6 @@
 #include <utils/Errors.h>
 #include <utils/KeyedVector.h>
 #include <utils/Tokenizer.h>
-#include <utils/String8.h>
 #include <utils/Unicode.h>
 #include <utils/RefBase.h>
 
@@ -75,10 +74,10 @@
     };
 
     /* Loads a key character map from a file. */
-    static status_t load(const String8& filename, Format format, sp<KeyCharacterMap>* outMap);
+    static status_t load(const std::string& filename, Format format, sp<KeyCharacterMap>* outMap);
 
     /* Loads a key character map from its string contents. */
-    static status_t loadContents(const String8& filename,
+    static status_t loadContents(const std::string& filename,
             const char* contents, Format format, sp<KeyCharacterMap>* outMap);
 
     /* Combines a base key character map and an overlay. */
@@ -221,7 +220,7 @@
         status_t parseKey();
         status_t parseKeyProperty();
         status_t finishKey(Key* key);
-        status_t parseModifier(const String8& token, int32_t* outMetaState);
+        status_t parseModifier(const std::string& token, int32_t* outMetaState);
         status_t parseCharacterLiteral(char16_t* outCharacter);
     };
 
diff --git a/include/input/KeyLayoutMap.h b/include/input/KeyLayoutMap.h
index 1e8de71..73815fe 100644
--- a/include/input/KeyLayoutMap.h
+++ b/include/input/KeyLayoutMap.h
@@ -62,7 +62,7 @@
  */
 class KeyLayoutMap : public RefBase {
 public:
-    static status_t load(const String8& filename, sp<KeyLayoutMap>* outMap);
+    static status_t load(const std::string& filename, sp<KeyLayoutMap>* outMap);
 
     status_t mapKey(int32_t scanCode, int32_t usageCode,
             int32_t* outKeyCode, uint32_t* outFlags) const;
diff --git a/include/input/Keyboard.h b/include/input/Keyboard.h
index d4903e9..8b66f69 100644
--- a/include/input/Keyboard.h
+++ b/include/input/Keyboard.h
@@ -21,7 +21,6 @@
 #include <input/InputDevice.h>
 #include <input/InputEventLabels.h>
 #include <utils/Errors.h>
-#include <utils/String8.h>
 #include <utils/PropertyMap.h>
 
 namespace android {
@@ -43,10 +42,10 @@
  */
 class KeyMap {
 public:
-    String8 keyLayoutFile;
+    std::string keyLayoutFile;
     sp<KeyLayoutMap> keyLayoutMap;
 
-    String8 keyCharacterMapFile;
+    std::string keyCharacterMapFile;
     sp<KeyCharacterMap> keyCharacterMap;
 
     KeyMap();
@@ -56,11 +55,11 @@
             const PropertyMap* deviceConfiguration);
 
     inline bool haveKeyLayout() const {
-        return !keyLayoutFile.isEmpty();
+        return !keyLayoutFile.empty();
     }
 
     inline bool haveKeyCharacterMap() const {
-        return !keyCharacterMapFile.isEmpty();
+        return !keyCharacterMapFile.empty();
     }
 
     inline bool isComplete() const {
@@ -68,12 +67,12 @@
     }
 
 private:
-    bool probeKeyMap(const InputDeviceIdentifier& deviceIdentifier, const String8& name);
-    status_t loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier, const String8& name);
+    bool probeKeyMap(const InputDeviceIdentifier& deviceIdentifier, const std::string& name);
+    status_t loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier, const std::string& name);
     status_t loadKeyCharacterMap(const InputDeviceIdentifier& deviceIdentifier,
-            const String8& name);
-    String8 getPath(const InputDeviceIdentifier& deviceIdentifier,
-            const String8& name, InputDeviceConfigurationFileType type);
+            const std::string& name);
+    std::string getPath(const InputDeviceIdentifier& deviceIdentifier,
+            const std::string& name, InputDeviceConfigurationFileType type);
 };
 
 /**
diff --git a/include/input/VelocityTracker.h b/include/input/VelocityTracker.h
index ffa1614..727865a 100644
--- a/include/input/VelocityTracker.h
+++ b/include/input/VelocityTracker.h
@@ -63,7 +63,7 @@
 
     // Creates a velocity tracker using the specified strategy.
     // If strategy is NULL, uses the default strategy for the platform.
-    VelocityTracker(const char* strategy = NULL);
+    VelocityTracker(const char* strategy = nullptr);
 
     ~VelocityTracker();
 
diff --git a/include/input/VirtualKeyMap.h b/include/input/VirtualKeyMap.h
index e245ead..24e0e0e 100644
--- a/include/input/VirtualKeyMap.h
+++ b/include/input/VirtualKeyMap.h
@@ -23,7 +23,6 @@
 #include <utils/Errors.h>
 #include <utils/KeyedVector.h>
 #include <utils/Tokenizer.h>
-#include <utils/String8.h>
 #include <utils/Unicode.h>
 
 namespace android {
@@ -50,7 +49,7 @@
 public:
     ~VirtualKeyMap();
 
-    static status_t load(const String8& filename, VirtualKeyMap** outMap);
+    static status_t load(const std::string& filename, VirtualKeyMap** outMap);
 
     inline const Vector<VirtualKeyDefinition>& getVirtualKeys() const {
         return mVirtualKeys;
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index da10687..aedf6b0 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -107,6 +107,7 @@
         "-Wall",
         "-Wextra",
         "-Werror",
+        "-Wzero-as-null-pointer-constant",
     ],
     product_variables: {
         binder32bit: {
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index b3ae09b..87c9842 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -74,7 +74,7 @@
 }
 
 // Note: must be kept in sync with android/os/StrictMode.java's PENALTY_GATHER
-#define STRICT_MODE_PENALTY_GATHER (0x40 << 16)
+#define STRICT_MODE_PENALTY_GATHER (1 << 31)
 
 // XXX This can be made public if we want to provide
 // support for typed data.
@@ -2307,6 +2307,15 @@
     int fd = readFileDescriptor();
     if (fd == int(BAD_TYPE)) return BAD_VALUE;
 
+    if (!ashmem_valid(fd)) {
+        ALOGE("invalid fd");
+        return BAD_VALUE;
+    }
+    int size = ashmem_get_size_region(fd);
+    if (size < 0 || size_t(size) < len) {
+        ALOGE("request size %zu does not match fd size %d", len, size);
+        return BAD_VALUE;
+    }
     void* ptr = ::mmap(nullptr, len, isMutable ? PROT_READ | PROT_WRITE : PROT_READ,
             MAP_SHARED, fd, 0);
     if (ptr == MAP_FAILED) return NO_MEMORY;
diff --git a/libs/binder/include/binder/AppOpsManager.h b/libs/binder/include/binder/AppOpsManager.h
index c5b57c7..37237df 100644
--- a/libs/binder/include/binder/AppOpsManager.h
+++ b/libs/binder/include/binder/AppOpsManager.h
@@ -95,6 +95,20 @@
         OP_USE_FINGERPRINT = 55,
         OP_BODY_SENSORS = 56,
         OP_AUDIO_ACCESSIBILITY_VOLUME = 64,
+        OP_READ_PHONE_NUMBERS = 65,
+        OP_REQUEST_INSTALL_PACKAGES = 66,
+        OP_PICTURE_IN_PICTURE = 67,
+        OP_INSTANT_APP_START_FOREGROUND = 68,
+        OP_ANSWER_PHONE_CALLS = 69,
+        OP_RUN_ANY_IN_BACKGROUND = 70,
+        OP_CHANGE_WIFI_STATE = 71,
+        OP_REQUEST_DELETE_PACKAGES = 72,
+        OP_BIND_ACCESSIBILITY_SERVICE = 73,
+        OP_ACCEPT_HANDOVER = 74,
+        OP_MANAGE_IPSEC_TUNNELS = 75,
+        OP_START_FOREGROUND = 76,
+        OP_BLUETOOTH_SCAN = 77,
+        OP_USE_BIOMETRIC = 78,
     };
 
     AppOpsManager();
diff --git a/libs/binder/include/binder/IServiceManager.h b/libs/binder/include/binder/IServiceManager.h
index a998529..1d39aa3 100644
--- a/libs/binder/include/binder/IServiceManager.h
+++ b/libs/binder/include/binder/IServiceManager.h
@@ -86,7 +86,7 @@
     const sp<IServiceManager> sm = defaultServiceManager();
     if (sm != nullptr) {
         *outService = interface_cast<INTERFACE>(sm->getService(name));
-        if ((*outService) != NULL) return NO_ERROR;
+        if ((*outService) != nullptr) return NO_ERROR;
     }
     return NAME_NOT_FOUND;
 }
diff --git a/libs/dumputils/dump_utils.cpp b/libs/dumputils/dump_utils.cpp
index 8b2f842..0d224d8 100644
--- a/libs/dumputils/dump_utils.cpp
+++ b/libs/dumputils/dump_utils.cpp
@@ -46,6 +46,7 @@
         "android.hardware.bluetooth@1.0::IBluetoothHci",
         "android.hardware.camera.provider@2.4::ICameraProvider",
         "android.hardware.drm@1.0::IDrmFactory",
+        "android.hardware.graphics.allocator@2.0::IAllocator",
         "android.hardware.graphics.composer@2.1::IComposer",
         "android.hardware.media.omx@1.0::IOmx",
         "android.hardware.media.omx@1.0::IOmxStore",
diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index a8ef7a0..2a7d76e 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -56,6 +56,35 @@
     mDriverPath = path;
 }
 
+void GraphicsEnv::setAngleInfo(const std::string path, const std::string appName,
+                               const std::string appPref, bool developerOptIn) {
+    if (!mAnglePath.empty()) {
+        ALOGV("ignoring attempt to change ANGLE path from '%s' to '%s'", mAnglePath.c_str(),
+              path.c_str());
+    } else {
+        ALOGV("setting ANGLE path to '%s'", path.c_str());
+        mAnglePath = path;
+    }
+
+    if (!mAngleAppName.empty()) {
+        ALOGV("ignoring attempt to change ANGLE app name from '%s' to '%s'", mAngleAppName.c_str(),
+              appName.c_str());
+    } else {
+        ALOGV("setting ANGLE app name to '%s'", appName.c_str());
+        mAngleAppName = appName;
+    }
+
+    if (!mAngleAppPref.empty()) {
+        ALOGV("ignoring attempt to change ANGLE application opt-in from '%s' to '%s'",
+              mAngleAppPref.c_str(), appPref.c_str());
+    } else {
+        ALOGV("setting ANGLE application opt-in to '%s'", appPref.c_str());
+        mAngleAppPref = appPref;
+    }
+
+    mAngleDeveloperOptIn = developerOptIn;
+}
+
 void GraphicsEnv::setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths) {
     if (mLayerPaths.empty()) {
         mLayerPaths = layerPaths;
@@ -70,6 +99,20 @@
     return mAppNamespace;
 }
 
+const char* GraphicsEnv::getAngleAppName() {
+    if (mAngleAppName.empty()) return nullptr;
+    return mAngleAppName.c_str();
+}
+
+bool GraphicsEnv::getAngleDeveloperOptIn() {
+    return mAngleDeveloperOptIn;
+}
+
+const char* GraphicsEnv::getAngleAppPref() {
+    if (mAngleAppPref.empty()) return nullptr;
+    return mAngleAppPref.c_str();
+}
+
 const std::string GraphicsEnv::getLayerPaths(){
     return mLayerPaths;
 }
@@ -102,8 +145,40 @@
     return mDriverNamespace;
 }
 
+android_namespace_t* GraphicsEnv::getAngleNamespace() {
+    static std::once_flag once;
+    std::call_once(once, [this]() {
+        if (mAnglePath.empty()) return;
+
+        mAngleNamespace = android_create_namespace("ANGLE",
+                                                   nullptr,            // ld_library_path
+                                                   mAnglePath.c_str(), // default_library_path
+                                                   ANDROID_NAMESPACE_TYPE_SHARED |
+                                                           ANDROID_NAMESPACE_TYPE_ISOLATED,
+                                                   nullptr, // permitted_when_isolated_path
+                                                   nullptr);
+        if (!mAngleNamespace) ALOGD("Could not create ANGLE namespace from default");
+    });
+
+    return mAngleNamespace;
+}
+
 } // namespace android
 
-extern "C" android_namespace_t* android_getDriverNamespace() {
+extern "C" {
+android_namespace_t* android_getDriverNamespace() {
     return android::GraphicsEnv::getInstance().getDriverNamespace();
 }
+android_namespace_t* android_getAngleNamespace() {
+    return android::GraphicsEnv::getInstance().getAngleNamespace();
+}
+const char* android_getAngleAppName() {
+    return android::GraphicsEnv::getInstance().getAngleAppName();
+}
+bool android_getAngleDeveloperOptIn() {
+    return android::GraphicsEnv::getInstance().getAngleDeveloperOptIn();
+}
+const char* android_getAngleAppPref() {
+    return android::GraphicsEnv::getInstance().getAngleAppPref();
+}
+}
diff --git a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
index 17e8f6b..00e8fc0 100644
--- a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
+++ b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
@@ -37,8 +37,21 @@
     void setDriverPath(const std::string path);
     android_namespace_t* getDriverNamespace();
 
+    // Set a search path for loading ANGLE libraries. The path is a list of
+    // directories separated by ':'. A directory can be contained in a zip file
+    // (libraries must be stored uncompressed and page aligned); such elements
+    // in the search path must have a '!' after the zip filename, e.g.
+    //     /system/app/ANGLEPrebuilt/ANGLEPrebuilt.apk!/lib/arm64-v8a
+    void setAngleInfo(const std::string path, const std::string appName, const std::string appPref,
+                      bool devOptIn);
+    android_namespace_t* getAngleNamespace();
+    const char* getAngleAppName();
+    const char* getAngleAppPref();
+    bool getAngleDeveloperOptIn();
+
     void setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths);
     NativeLoaderNamespace* getAppNamespace();
+
     const std::string getLayerPaths();
 
     void setDebugLayers(const std::string layers);
@@ -47,9 +60,14 @@
 private:
     GraphicsEnv() = default;
     std::string mDriverPath;
+    std::string mAnglePath;
+    std::string mAngleAppName;
+    std::string mAngleAppPref;
+    bool mAngleDeveloperOptIn;
     std::string mDebugLayers;
     std::string mLayerPaths;
     android_namespace_t* mDriverNamespace = nullptr;
+    android_namespace_t* mAngleNamespace = nullptr;
     NativeLoaderNamespace* mAppNamespace = nullptr;
 };
 
@@ -66,6 +84,12 @@
  *  - the EGLsyncKHR synchronization in BufferQueue, which is deprecated and
  *    will be removed soon.
  */
-extern "C" android_namespace_t* android_getDriverNamespace();
+extern "C" {
+android_namespace_t* android_getDriverNamespace();
+android_namespace_t* android_getAngleNamespace();
+const char* android_getAngleAppName();
+const char* android_getAngleAppPref();
+bool android_getAngleDeveloperOptIn();
+}
 
 #endif // ANDROID_UI_GRAPHICS_ENV_H
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index b29c1d5..98264ac 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -31,6 +31,7 @@
         "-Werror",
     ],
     cppflags: [
+        "-std=c++1z",
         "-Weverything",
 
         // The static constructors and destructors in this library have not been noted to
@@ -58,7 +59,7 @@
         "-Wno-weak-vtables",
 
         // Allow four-character integer literals
-	"-Wno-four-char-constants",
+        "-Wno-four-char-constants",
 
         // Allow documentation warnings
         "-Wno-documentation",
@@ -116,14 +117,15 @@
         "SyncFeatures.cpp",
         "view/Surface.cpp",
         "bufferqueue/1.0/B2HProducerListener.cpp",
-        "bufferqueue/1.0/H2BGraphicBufferProducer.cpp"
+        "bufferqueue/1.0/H2BGraphicBufferProducer.cpp",
     ],
 
     shared_libs: [
         "android.hardware.graphics.common@1.1",
         "libsync",
         "libbinder",
-        "libbufferhubqueue",  // TODO(b/70046255): Remove this once BufferHub is integrated into libgui.
+        "libbufferhub",
+        "libbufferhubqueue", // TODO(b/70046255): Remove this once BufferHub is integrated into libgui.
         "libpdx_default_transport",
         "libcutils",
         "libEGL",
@@ -149,6 +151,7 @@
                 "BufferHubProducer.cpp",
             ],
             exclude_shared_libs: [
+                "libbufferhub",
                 "libbufferhubqueue",
                 "libpdx_default_transport",
             ],
diff --git a/libs/gui/BufferHubProducer.cpp b/libs/gui/BufferHubProducer.cpp
index ae5cca2..06d597c 100644
--- a/libs/gui/BufferHubProducer.cpp
+++ b/libs/gui/BufferHubProducer.cpp
@@ -18,7 +18,9 @@
 #include <gui/BufferHubProducer.h>
 #include <inttypes.h>
 #include <log/log.h>
+#include <private/dvr/detached_buffer.h>
 #include <system/window.h>
+#include <ui/DetachedBufferHandle.h>
 
 namespace android {
 
@@ -224,24 +226,224 @@
     return ret;
 }
 
-status_t BufferHubProducer::detachBuffer(int /* slot */) {
-    ALOGE("BufferHubProducer::detachBuffer not implemented.");
-    return INVALID_OPERATION;
+status_t BufferHubProducer::detachBuffer(int slot) {
+    ALOGV("detachBuffer: slot=%d", slot);
+    std::unique_lock<std::mutex> lock(mutex_);
+
+    return DetachBufferLocked(static_cast<size_t>(slot));
 }
 
-status_t BufferHubProducer::detachNextBuffer(sp<GraphicBuffer>* /* out_buffer */,
-                                             sp<Fence>* /* out_fence */) {
-    ALOGE("BufferHubProducer::detachNextBuffer not implemented.");
-    return INVALID_OPERATION;
+status_t BufferHubProducer::DetachBufferLocked(size_t slot) {
+    if (connected_api_ == kNoConnectedApi) {
+        ALOGE("detachBuffer: BufferHubProducer is not connected.");
+        return NO_INIT;
+    }
+
+    if (slot >= static_cast<size_t>(max_buffer_count_)) {
+        ALOGE("detachBuffer: slot index %zu out of range [0, %d)", slot, max_buffer_count_);
+        return BAD_VALUE;
+    } else if (!buffers_[slot].mBufferState.isDequeued()) {
+        ALOGE("detachBuffer: slot %zu is not owned by the producer (state = %s)", slot,
+              buffers_[slot].mBufferState.string());
+        return BAD_VALUE;
+    } else if (!buffers_[slot].mRequestBufferCalled) {
+        ALOGE("detachBuffer: buffer in slot %zu has not been requested", slot);
+        return BAD_VALUE;
+    }
+    std::shared_ptr<BufferProducer> buffer_producer = queue_->GetBuffer(slot);
+    if (buffer_producer == nullptr || buffer_producer->buffer() == nullptr) {
+        ALOGE("detachBuffer: Invalid BufferProducer at slot %zu.", slot);
+        return BAD_VALUE;
+    }
+    sp<GraphicBuffer> graphic_buffer = buffer_producer->buffer()->buffer();
+    if (graphic_buffer == nullptr) {
+        ALOGE("detachBuffer: Invalid GraphicBuffer at slot %zu.", slot);
+        return BAD_VALUE;
+    }
+
+    // Remove the BufferProducer from the ProducerQueue.
+    status_t error = RemoveBuffer(slot);
+    if (error != NO_ERROR) {
+        ALOGE("detachBuffer: Failed to remove buffer, slot=%zu, error=%d.", slot, error);
+        return error;
+    }
+
+    // Here we need to convert the existing ProducerBuffer into a DetachedBufferHandle and inject
+    // the handle into the GraphicBuffer object at the requested slot.
+    auto status_or_handle = buffer_producer->Detach();
+    if (!status_or_handle.ok()) {
+        ALOGE("detachBuffer: Failed to detach from a BufferProducer at slot %zu, error=%d.", slot,
+              status_or_handle.error());
+        return BAD_VALUE;
+    }
+    std::unique_ptr<DetachedBufferHandle> handle =
+            DetachedBufferHandle::Create(status_or_handle.take());
+    if (!handle->isValid()) {
+        ALOGE("detachBuffer: Failed to create a DetachedBufferHandle at slot %zu.", slot);
+        return BAD_VALUE;
+    }
+
+    return graphic_buffer->setDetachedBufferHandle(std::move(handle));
 }
 
-status_t BufferHubProducer::attachBuffer(int* /* out_slot */,
-                                         const sp<GraphicBuffer>& /* buffer */) {
-    // With this BufferHub backed implementation, we assume (for now) all buffers
-    // are allocated and owned by the BufferHub. Thus the attempt of transfering
-    // ownership of a buffer to the buffer queue is intentionally unsupported.
-    LOG_ALWAYS_FATAL("BufferHubProducer::attachBuffer not supported.");
-    return INVALID_OPERATION;
+status_t BufferHubProducer::detachNextBuffer(sp<GraphicBuffer>* out_buffer, sp<Fence>* out_fence) {
+    ALOGV("detachNextBuffer.");
+
+    if (out_buffer == nullptr || out_fence == nullptr) {
+        ALOGE("detachNextBuffer: Invalid parameter: out_buffer=%p, out_fence=%p", out_buffer,
+              out_fence);
+        return BAD_VALUE;
+    }
+
+    std::unique_lock<std::mutex> lock(mutex_);
+
+    if (connected_api_ == kNoConnectedApi) {
+        ALOGE("detachNextBuffer: BufferHubProducer is not connected.");
+        return NO_INIT;
+    }
+
+    // detachNextBuffer is equivalent to calling dequeueBuffer, requestBuffer, and detachBuffer in
+    // sequence, except for two things:
+    //
+    // 1) It is unnecessary to know the dimensions, format, or usage of the next buffer, i.e. the
+    // function just returns whatever BufferProducer is available from the ProducerQueue and no
+    // buffer allocation or re-allocation will happen.
+    // 2) It will not block, since if it cannot find an appropriate buffer to return, it will return
+    // an error instead.
+    size_t slot = 0;
+    LocalHandle fence;
+
+    // First, dequeue a BufferProducer from the ProducerQueue with no timeout. Report error
+    // immediately if ProducerQueue::Dequeue() fails.
+    auto status_or_buffer = queue_->Dequeue(/*timeout=*/0, &slot, &fence);
+    if (!status_or_buffer.ok()) {
+        ALOGE("detachNextBuffer: Failed to dequeue buffer, error=%d.", status_or_buffer.error());
+        return NO_MEMORY;
+    }
+
+    std::shared_ptr<BufferProducer> buffer_producer = status_or_buffer.take();
+    if (buffer_producer == nullptr) {
+        ALOGE("detachNextBuffer: Dequeued buffer is null.");
+        return NO_MEMORY;
+    }
+
+    // With the BufferHub backed solution, slot returned from |queue_->Dequeue| is guaranteed to
+    // be available for producer's use. It's either in free state (if the buffer has never been used
+    // before) or in queued state (if the buffer has been dequeued and queued back to
+    // BufferHubQueue).
+    if (!buffers_[slot].mBufferState.isFree() && !buffers_[slot].mBufferState.isQueued()) {
+        ALOGE("detachNextBuffer: slot %zu is not free or queued, actual state: %s.", slot,
+              buffers_[slot].mBufferState.string());
+        return BAD_VALUE;
+    }
+    if (buffers_[slot].mBufferProducer == nullptr) {
+        ALOGE("detachNextBuffer: BufferProducer at slot %zu is null.", slot);
+        return BAD_VALUE;
+    }
+    if (buffers_[slot].mBufferProducer->id() != buffer_producer->id()) {
+        ALOGE("detachNextBuffer: BufferProducer at slot %zu has mismatched id, actual: "
+              "%d, expected: %d.",
+              slot, buffers_[slot].mBufferProducer->id(), buffer_producer->id());
+        return BAD_VALUE;
+    }
+
+    ALOGV("detachNextBuffer: slot=%zu", slot);
+    buffers_[slot].mBufferState.freeQueued();
+    buffers_[slot].mBufferState.dequeue();
+
+    // Second, request the buffer.
+    sp<GraphicBuffer> graphic_buffer = buffer_producer->buffer()->buffer();
+    buffers_[slot].mGraphicBuffer = buffer_producer->buffer()->buffer();
+
+    // Finally, detach the buffer and then return.
+    status_t error = DetachBufferLocked(slot);
+    if (error == NO_ERROR) {
+        *out_fence = new Fence(fence.Release());
+        *out_buffer = graphic_buffer;
+    }
+    return error;
+}
+
+status_t BufferHubProducer::attachBuffer(int* out_slot, const sp<GraphicBuffer>& buffer) {
+    // In the BufferHub design, all buffers are allocated and owned by the BufferHub. Thus only
+    // GraphicBuffers that are originated from BufferHub can be attached to a BufferHubProducer.
+    ALOGV("queueBuffer: buffer=%p", buffer.get());
+
+    if (out_slot == nullptr) {
+        ALOGE("attachBuffer: out_slot cannot be NULL.");
+        return BAD_VALUE;
+    }
+    if (buffer == nullptr || !buffer->isDetachedBuffer()) {
+        ALOGE("attachBuffer: invalid GraphicBuffer.");
+        return BAD_VALUE;
+    }
+
+    std::unique_lock<std::mutex> lock(mutex_);
+
+    if (connected_api_ == kNoConnectedApi) {
+        ALOGE("attachBuffer: BufferQueue has no connected producer");
+        return NO_INIT;
+    }
+
+    // Before attaching the buffer, caller is supposed to call
+    // IGraphicBufferProducer::setGenerationNumber to inform the
+    // BufferHubProducer the next generation number.
+    if (buffer->getGenerationNumber() != generation_number_) {
+        ALOGE("attachBuffer: Mismatched generation number, buffer: %u, queue: %u.",
+              buffer->getGenerationNumber(), generation_number_);
+        return BAD_VALUE;
+    }
+
+    // Creates a BufferProducer from the GraphicBuffer.
+    std::unique_ptr<DetachedBufferHandle> detached_handle = buffer->takeDetachedBufferHandle();
+    if (detached_handle == nullptr) {
+        ALOGE("attachBuffer: DetachedBufferHandle cannot be NULL.");
+        return BAD_VALUE;
+    }
+    auto detached_buffer = DetachedBuffer::Import(std::move(detached_handle->handle()));
+    if (detached_buffer == nullptr) {
+        ALOGE("attachBuffer: DetachedBuffer cannot be NULL.");
+        return BAD_VALUE;
+    }
+    auto status_or_handle = detached_buffer->Promote();
+    if (!status_or_handle.ok()) {
+        ALOGE("attachBuffer: Failed to promote a DetachedBuffer into a BufferProducer, error=%d.",
+              status_or_handle.error());
+        return BAD_VALUE;
+    }
+    std::shared_ptr<BufferProducer> buffer_producer =
+            BufferProducer::Import(status_or_handle.take());
+    if (buffer_producer == nullptr) {
+        ALOGE("attachBuffer: Failed to import BufferProducer.");
+        return BAD_VALUE;
+    }
+
+    // Adds the BufferProducer into the Queue.
+    auto status_or_slot = queue_->InsertBuffer(buffer_producer);
+    if (!status_or_slot.ok()) {
+        ALOGE("attachBuffer: Failed to insert buffer, error=%d.", status_or_slot.error());
+        return BAD_VALUE;
+    }
+
+    size_t slot = status_or_slot.get();
+    ALOGV("attachBuffer: returning slot %zu.", slot);
+    if (slot >= static_cast<size_t>(max_buffer_count_)) {
+        ALOGE("attachBuffer: Invalid slot: %zu.", slot);
+        return BAD_VALUE;
+    }
+
+    // The just attached buffer should be in dequeued state according to IGraphicBufferProducer
+    // interface. In BufferHub's language the buffer should be in Gained state.
+    buffers_[slot].mGraphicBuffer = buffer;
+    buffers_[slot].mBufferState.attachProducer();
+    buffers_[slot].mEglFence = EGL_NO_SYNC_KHR;
+    buffers_[slot].mFence = Fence::NO_FENCE;
+    buffers_[slot].mRequestBufferCalled = true;
+    buffers_[slot].mAcquireCalled = false;
+    buffers_[slot].mNeedsReallocation = false;
+
+    *out_slot = static_cast<int>(slot);
+    return NO_ERROR;
 }
 
 status_t BufferHubProducer::queueBuffer(int slot, const QueueBufferInput& input,
@@ -654,26 +856,28 @@
 status_t BufferHubProducer::RemoveBuffer(size_t slot) {
     auto status = queue_->RemoveBuffer(slot);
     if (!status) {
-        ALOGE("BufferHubProducer::RemoveBuffer: Failed to remove buffer: %s",
-              status.GetErrorMessage().c_str());
+        ALOGE("BufferHubProducer::RemoveBuffer: Failed to remove buffer at slot: %zu, error: %s.",
+              slot, status.GetErrorMessage().c_str());
         return INVALID_OPERATION;
     }
 
     // Reset in memory objects related the the buffer.
     buffers_[slot].mBufferProducer = nullptr;
-    buffers_[slot].mGraphicBuffer = nullptr;
     buffers_[slot].mBufferState.detachProducer();
+    buffers_[slot].mFence = Fence::NO_FENCE;
+    buffers_[slot].mGraphicBuffer = nullptr;
+    buffers_[slot].mRequestBufferCalled = false;
     return NO_ERROR;
 }
 
 status_t BufferHubProducer::FreeAllBuffers() {
     for (size_t slot = 0; slot < BufferHubQueue::kMaxQueueCapacity; slot++) {
         // Reset in memory objects related the the buffer.
-        buffers_[slot].mGraphicBuffer = nullptr;
-        buffers_[slot].mBufferState.reset();
-        buffers_[slot].mRequestBufferCalled = false;
         buffers_[slot].mBufferProducer = nullptr;
+        buffers_[slot].mBufferState.reset();
         buffers_[slot].mFence = Fence::NO_FENCE;
+        buffers_[slot].mGraphicBuffer = nullptr;
+        buffers_[slot].mRequestBufferCalled = false;
     }
 
     auto status = queue_->FreeAllBuffers();
diff --git a/libs/gui/BufferItem.cpp b/libs/gui/BufferItem.cpp
index f50379b..5beba02 100644
--- a/libs/gui/BufferItem.cpp
+++ b/libs/gui/BufferItem.cpp
@@ -39,8 +39,8 @@
 }
 
 BufferItem::BufferItem() :
-    mGraphicBuffer(NULL),
-    mFence(NULL),
+    mGraphicBuffer(nullptr),
+    mFence(nullptr),
     mCrop(Rect::INVALID_RECT),
     mTransform(0),
     mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
@@ -91,11 +91,11 @@
 
 size_t BufferItem::getFlattenedSize() const {
     size_t size = sizeof(uint32_t); // Flags
-    if (mGraphicBuffer != 0) {
+    if (mGraphicBuffer != nullptr) {
         size += mGraphicBuffer->getFlattenedSize();
         size = FlattenableUtils::align<4>(size);
     }
-    if (mFence != 0) {
+    if (mFence != nullptr) {
         size += mFence->getFlattenedSize();
         size = FlattenableUtils::align<4>(size);
     }
@@ -107,10 +107,10 @@
 
 size_t BufferItem::getFdCount() const {
     size_t count = 0;
-    if (mGraphicBuffer != 0) {
+    if (mGraphicBuffer != nullptr) {
         count += mGraphicBuffer->getFdCount();
     }
-    if (mFence != 0) {
+    if (mFence != nullptr) {
         count += mFence->getFdCount();
     }
     return count;
@@ -137,13 +137,13 @@
     FlattenableUtils::advance(buffer, size, sizeof(uint32_t));
 
     flags = 0;
-    if (mGraphicBuffer != 0) {
+    if (mGraphicBuffer != nullptr) {
         status_t err = mGraphicBuffer->flatten(buffer, size, fds, count);
         if (err) return err;
         size -= FlattenableUtils::align<4>(buffer);
         flags |= 1;
     }
-    if (mFence != 0) {
+    if (mFence != nullptr) {
         status_t err = mFence->flatten(buffer, size, fds, count);
         if (err) return err;
         size -= FlattenableUtils::align<4>(buffer);
diff --git a/libs/gui/BufferItemConsumer.cpp b/libs/gui/BufferItemConsumer.cpp
index 89bc0c4..f50bc20 100644
--- a/libs/gui/BufferItemConsumer.cpp
+++ b/libs/gui/BufferItemConsumer.cpp
@@ -107,7 +107,7 @@
 
 void BufferItemConsumer::freeBufferLocked(int slotIndex) {
     sp<BufferFreedListener> listener = mBufferFreedListener.promote();
-    if (listener != NULL && mSlots[slotIndex].mGraphicBuffer != NULL) {
+    if (listener != nullptr && mSlots[slotIndex].mGraphicBuffer != nullptr) {
         // Fire callback if we have a listener registered and the buffer being freed is valid.
         BI_LOGV("actually calling onBufferFreed");
         listener->onBufferFreed(mSlots[slotIndex].mGraphicBuffer);
diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index a8da134..5fb3f0b 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -38,7 +38,7 @@
 
 void BufferQueue::ProxyConsumerListener::onDisconnect() {
     sp<ConsumerListener> listener(mConsumerListener.promote());
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onDisconnect();
     }
 }
@@ -46,7 +46,7 @@
 void BufferQueue::ProxyConsumerListener::onFrameAvailable(
         const BufferItem& item) {
     sp<ConsumerListener> listener(mConsumerListener.promote());
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onFrameAvailable(item);
     }
 }
@@ -54,21 +54,21 @@
 void BufferQueue::ProxyConsumerListener::onFrameReplaced(
         const BufferItem& item) {
     sp<ConsumerListener> listener(mConsumerListener.promote());
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onFrameReplaced(item);
     }
 }
 
 void BufferQueue::ProxyConsumerListener::onBuffersReleased() {
     sp<ConsumerListener> listener(mConsumerListener.promote());
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
     }
 }
 
 void BufferQueue::ProxyConsumerListener::onSidebandStreamChanged() {
     sp<ConsumerListener> listener(mConsumerListener.promote());
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onSidebandStreamChanged();
     }
 }
@@ -85,21 +85,21 @@
 void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
         sp<IGraphicBufferConsumer>* outConsumer,
         bool consumerIsSurfaceFlinger) {
-    LOG_ALWAYS_FATAL_IF(outProducer == NULL,
+    LOG_ALWAYS_FATAL_IF(outProducer == nullptr,
             "BufferQueue: outProducer must not be NULL");
-    LOG_ALWAYS_FATAL_IF(outConsumer == NULL,
+    LOG_ALWAYS_FATAL_IF(outConsumer == nullptr,
             "BufferQueue: outConsumer must not be NULL");
 
     sp<BufferQueueCore> core(new BufferQueueCore());
-    LOG_ALWAYS_FATAL_IF(core == NULL,
+    LOG_ALWAYS_FATAL_IF(core == nullptr,
             "BufferQueue: failed to create BufferQueueCore");
 
     sp<IGraphicBufferProducer> producer(new BufferQueueProducer(core, consumerIsSurfaceFlinger));
-    LOG_ALWAYS_FATAL_IF(producer == NULL,
+    LOG_ALWAYS_FATAL_IF(producer == nullptr,
             "BufferQueue: failed to create BufferQueueProducer");
 
     sp<IGraphicBufferConsumer> consumer(new BufferQueueConsumer(core));
-    LOG_ALWAYS_FATAL_IF(consumer == NULL,
+    LOG_ALWAYS_FATAL_IF(consumer == nullptr,
             "BufferQueue: failed to create BufferQueueConsumer");
 
     *outProducer = producer;
@@ -109,8 +109,8 @@
 #ifndef NO_BUFFERHUB
 void BufferQueue::createBufferHubQueue(sp<IGraphicBufferProducer>* outProducer,
                                        sp<IGraphicBufferConsumer>* outConsumer) {
-    LOG_ALWAYS_FATAL_IF(outProducer == NULL, "BufferQueue: outProducer must not be NULL");
-    LOG_ALWAYS_FATAL_IF(outConsumer == NULL, "BufferQueue: outConsumer must not be NULL");
+    LOG_ALWAYS_FATAL_IF(outProducer == nullptr, "BufferQueue: outProducer must not be NULL");
+    LOG_ALWAYS_FATAL_IF(outConsumer == nullptr, "BufferQueue: outConsumer must not be NULL");
 
     sp<IGraphicBufferProducer> producer;
     sp<IGraphicBufferConsumer> consumer;
@@ -118,16 +118,16 @@
     dvr::ProducerQueueConfigBuilder configBuilder;
     std::shared_ptr<dvr::ProducerQueue> producerQueue =
             dvr::ProducerQueue::Create(configBuilder.Build(), dvr::UsagePolicy{});
-    LOG_ALWAYS_FATAL_IF(producerQueue == NULL, "BufferQueue: failed to create ProducerQueue.");
+    LOG_ALWAYS_FATAL_IF(producerQueue == nullptr, "BufferQueue: failed to create ProducerQueue.");
 
     std::shared_ptr<dvr::ConsumerQueue> consumerQueue = producerQueue->CreateConsumerQueue();
-    LOG_ALWAYS_FATAL_IF(consumerQueue == NULL, "BufferQueue: failed to create ConsumerQueue.");
+    LOG_ALWAYS_FATAL_IF(consumerQueue == nullptr, "BufferQueue: failed to create ConsumerQueue.");
 
     producer = BufferHubProducer::Create(producerQueue);
     consumer = BufferHubConsumer::Create(consumerQueue);
 
-    LOG_ALWAYS_FATAL_IF(producer == NULL, "BufferQueue: failed to create BufferQueueProducer");
-    LOG_ALWAYS_FATAL_IF(consumer == NULL, "BufferQueue: failed to create BufferQueueConsumer");
+    LOG_ALWAYS_FATAL_IF(producer == nullptr, "BufferQueue: failed to create BufferQueueProducer");
+    LOG_ALWAYS_FATAL_IF(consumer == nullptr, "BufferQueue: failed to create BufferQueueConsumer");
 
     *outProducer = producer;
     *outConsumer = consumer;
diff --git a/libs/gui/BufferQueueConsumer.cpp b/libs/gui/BufferQueueConsumer.cpp
index d70e142..3837c3e 100644
--- a/libs/gui/BufferQueueConsumer.cpp
+++ b/libs/gui/BufferQueueConsumer.cpp
@@ -255,7 +255,7 @@
         // mGraphicBuffer to NULL to avoid unnecessarily remapping this buffer
         // on the consumer side
         if (outBuffer->mAcquireCalled) {
-            outBuffer->mGraphicBuffer = NULL;
+            outBuffer->mGraphicBuffer = nullptr;
         }
 
         mCore->mQueue.erase(front);
@@ -272,7 +272,7 @@
         VALIDATE_CONSISTENCY();
     }
 
-    if (listener != NULL) {
+    if (listener != nullptr) {
         for (int i = 0; i < numDroppedBuffers; ++i) {
             listener->onBufferReleased();
         }
@@ -321,10 +321,10 @@
         const sp<android::GraphicBuffer>& buffer) {
     ATRACE_CALL();
 
-    if (outSlot == NULL) {
+    if (outSlot == nullptr) {
         BQ_LOGE("attachBuffer: outSlot must not be NULL");
         return BAD_VALUE;
-    } else if (buffer == NULL) {
+    } else if (buffer == nullptr) {
         BQ_LOGE("attachBuffer: cannot attach NULL buffer");
         return BAD_VALUE;
     }
@@ -413,7 +413,7 @@
     ATRACE_BUFFER_INDEX(slot);
 
     if (slot < 0 || slot >= BufferQueueDefs::NUM_BUFFER_SLOTS ||
-            releaseFence == NULL) {
+            releaseFence == nullptr) {
         BQ_LOGE("releaseBuffer: slot %d out of range or fence %p NULL", slot,
                 releaseFence.get());
         return BAD_VALUE;
@@ -465,7 +465,7 @@
     } // Autolock scope
 
     // Call back without lock held
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBufferReleased();
     }
 
@@ -476,7 +476,7 @@
         const sp<IConsumerListener>& consumerListener, bool controlledByApp) {
     ATRACE_CALL();
 
-    if (consumerListener == NULL) {
+    if (consumerListener == nullptr) {
         BQ_LOGE("connect: consumerListener may not be NULL");
         return BAD_VALUE;
     }
@@ -504,13 +504,13 @@
 
     Mutex::Autolock lock(mCore->mMutex);
 
-    if (mCore->mConsumerListener == NULL) {
+    if (mCore->mConsumerListener == nullptr) {
         BQ_LOGE("disconnect: no consumer is connected");
         return BAD_VALUE;
     }
 
     mCore->mIsAbandoned = true;
-    mCore->mConsumerListener = NULL;
+    mCore->mConsumerListener = nullptr;
     mCore->mQueue.clear();
     mCore->freeAllBuffersLocked();
     mCore->mSharedBufferSlot = BufferQueueCore::INVALID_BUFFER_SLOT;
@@ -521,7 +521,7 @@
 status_t BufferQueueConsumer::getReleasedBuffers(uint64_t *outSlotMask) {
     ATRACE_CALL();
 
-    if (outSlotMask == NULL) {
+    if (outSlotMask == nullptr) {
         BQ_LOGE("getReleasedBuffers: outSlotMask may not be NULL");
         return BAD_VALUE;
     }
@@ -673,7 +673,7 @@
         }
     }
     // Call back without lock held
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
     }
 
@@ -772,7 +772,7 @@
     if (uid != shellUid) {
 #endif
         android_errorWriteWithInfoLog(0x534e4554, "27046057",
-                static_cast<int32_t>(uid), NULL, 0);
+                static_cast<int32_t>(uid), nullptr, 0);
         return PERMISSION_DENIED;
     }
 
diff --git a/libs/gui/BufferQueueCore.cpp b/libs/gui/BufferQueueCore.cpp
index bb703da..960b194 100644
--- a/libs/gui/BufferQueueCore.cpp
+++ b/libs/gui/BufferQueueCore.cpp
@@ -349,7 +349,7 @@
                 BQ_LOGE("Slot %d is in mUnusedSlots but is not FREE", slot);
                 usleep(PAUSE_TIME);
             }
-            if (mSlots[slot].mGraphicBuffer != NULL) {
+            if (mSlots[slot].mGraphicBuffer != nullptr) {
                 BQ_LOGE("Slot %d is in mUnusedSluts but has an active buffer",
                         slot);
                 usleep(PAUSE_TIME);
@@ -371,7 +371,7 @@
                 BQ_LOGE("Slot %d is in mFreeSlots but is not FREE", slot);
                 usleep(PAUSE_TIME);
             }
-            if (mSlots[slot].mGraphicBuffer != NULL) {
+            if (mSlots[slot].mGraphicBuffer != nullptr) {
                 BQ_LOGE("Slot %d is in mFreeSlots but has a buffer",
                         slot);
                 usleep(PAUSE_TIME);
@@ -394,7 +394,7 @@
                 BQ_LOGE("Slot %d is in mFreeBuffers but is not FREE", slot);
                 usleep(PAUSE_TIME);
             }
-            if (mSlots[slot].mGraphicBuffer == NULL) {
+            if (mSlots[slot].mGraphicBuffer == nullptr) {
                 BQ_LOGE("Slot %d is in mFreeBuffers but has no buffer", slot);
                 usleep(PAUSE_TIME);
             }
@@ -418,7 +418,7 @@
                 BQ_LOGE("Slot %d is in mActiveBuffers but is FREE", slot);
                 usleep(PAUSE_TIME);
             }
-            if (mSlots[slot].mGraphicBuffer == NULL && !mIsAllocating) {
+            if (mSlots[slot].mGraphicBuffer == nullptr && !mIsAllocating) {
                 BQ_LOGE("Slot %d is in mActiveBuffers but has no buffer", slot);
                 usleep(PAUSE_TIME);
             }
diff --git a/libs/gui/BufferQueueProducer.cpp b/libs/gui/BufferQueueProducer.cpp
index c96a2dd..5e250a4 100644
--- a/libs/gui/BufferQueueProducer.cpp
+++ b/libs/gui/BufferQueueProducer.cpp
@@ -166,7 +166,7 @@
     } // Autolock scope
 
     // Call back without lock held
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
     }
 
@@ -221,7 +221,7 @@
     } // Autolock scope
 
     // Call back without lock held
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
     }
     return NO_ERROR;
@@ -449,11 +449,11 @@
 
         mSlots[found].mBufferState.dequeue();
 
-        if ((buffer == NULL) ||
+        if ((buffer == nullptr) ||
                 buffer->needsReallocation(width, height, format, BQ_LAYER_COUNT, usage))
         {
             mSlots[found].mAcquireCalled = false;
-            mSlots[found].mGraphicBuffer = NULL;
+            mSlots[found].mGraphicBuffer = nullptr;
             mSlots[found].mRequestBufferCalled = false;
             mSlots[found].mEglDisplay = EGL_NO_DISPLAY;
             mSlots[found].mEglFence = EGL_NO_SYNC_KHR;
@@ -471,7 +471,7 @@
         BQ_LOGV("dequeueBuffer: setting buffer age to %" PRIu64,
                 mCore->mBufferAge);
 
-        if (CC_UNLIKELY(mSlots[found].mFence == NULL)) {
+        if (CC_UNLIKELY(mSlots[found].mFence == nullptr)) {
             BQ_LOGE("dequeueBuffer: about to return a NULL fence - "
                     "slot=%d w=%d h=%d format=%u",
                     found, buffer->width, buffer->height, buffer->format);
@@ -612,7 +612,7 @@
         listener = mCore->mConsumerListener;
     }
 
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
     }
 
@@ -623,10 +623,10 @@
         sp<Fence>* outFence) {
     ATRACE_CALL();
 
-    if (outBuffer == NULL) {
+    if (outBuffer == nullptr) {
         BQ_LOGE("detachNextBuffer: outBuffer must not be NULL");
         return BAD_VALUE;
-    } else if (outFence == NULL) {
+    } else if (outFence == nullptr) {
         BQ_LOGE("detachNextBuffer: outFence must not be NULL");
         return BAD_VALUE;
     }
@@ -670,7 +670,7 @@
         listener = mCore->mConsumerListener;
     }
 
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
     }
 
@@ -681,10 +681,10 @@
         const sp<android::GraphicBuffer>& buffer) {
     ATRACE_CALL();
 
-    if (outSlot == NULL) {
+    if (outSlot == nullptr) {
         BQ_LOGE("attachBuffer: outSlot must not be NULL");
         return BAD_VALUE;
-    } else if (buffer == NULL) {
+    } else if (buffer == nullptr) {
         BQ_LOGE("attachBuffer: cannot attach NULL buffer");
         return BAD_VALUE;
     }
@@ -766,7 +766,7 @@
     const Region& surfaceDamage = input.getSurfaceDamage();
     const HdrMetadata& hdrMetadata = input.getHdrMetadata();
 
-    if (acquireFence == NULL) {
+    if (acquireFence == nullptr) {
         BQ_LOGE("queueBuffer: fence is NULL");
         return BAD_VALUE;
     }
@@ -972,9 +972,9 @@
             mCallbackCondition.wait(mCallbackMutex);
         }
 
-        if (frameAvailableListener != NULL) {
+        if (frameAvailableListener != nullptr) {
             frameAvailableListener->onFrameAvailable(item);
-        } else if (frameReplacedListener != NULL) {
+        } else if (frameReplacedListener != nullptr) {
             frameReplacedListener->onFrameReplaced(item);
         }
 
@@ -1039,7 +1039,7 @@
         BQ_LOGE("cancelBuffer: slot %d is not owned by the producer "
                 "(state = %s)", slot, mSlots[slot].mBufferState.string());
         return BAD_VALUE;
-    } else if (fence == NULL) {
+    } else if (fence == nullptr) {
         BQ_LOGE("cancelBuffer: fence is NULL");
         return BAD_VALUE;
     }
@@ -1069,7 +1069,7 @@
     ATRACE_CALL();
     Mutex::Autolock lock(mCore->mMutex);
 
-    if (outValue == NULL) {
+    if (outValue == nullptr) {
         BQ_LOGE("query: outValue was NULL");
         return BAD_VALUE;
     }
@@ -1145,12 +1145,12 @@
         return NO_INIT;
     }
 
-    if (mCore->mConsumerListener == NULL) {
+    if (mCore->mConsumerListener == nullptr) {
         BQ_LOGE("connect: BufferQueue has no consumer");
         return NO_INIT;
     }
 
-    if (output == NULL) {
+    if (output == nullptr) {
         BQ_LOGE("connect: output was NULL");
         return BAD_VALUE;
     }
@@ -1188,10 +1188,10 @@
             output->nextFrameNumber = mCore->mFrameCounter + 1;
             output->bufferReplaced = false;
 
-            if (listener != NULL) {
+            if (listener != nullptr) {
                 // Set up a death notification so that we can disconnect
                 // automatically if the remote producer dies
-                if (IInterface::asBinder(listener)->remoteBinder() != NULL) {
+                if (IInterface::asBinder(listener)->remoteBinder() != nullptr) {
                     status = IInterface::asBinder(listener)->linkToDeath(
                             static_cast<IBinder::DeathRecipient*>(this));
                     if (status != NO_ERROR) {
@@ -1268,7 +1268,7 @@
                     mCore->freeAllBuffersLocked();
 
                     // Remove our death notification callback if we have one
-                    if (mCore->mLinkedToDeath != NULL) {
+                    if (mCore->mLinkedToDeath != nullptr) {
                         sp<IBinder> token =
                                 IInterface::asBinder(mCore->mLinkedToDeath);
                         // This can fail if we're here because of the death
@@ -1278,8 +1278,8 @@
                     }
                     mCore->mSharedBufferSlot =
                             BufferQueueCore::INVALID_BUFFER_SLOT;
-                    mCore->mLinkedToDeath = NULL;
-                    mCore->mConnectedProducerListener = NULL;
+                    mCore->mLinkedToDeath = nullptr;
+                    mCore->mConnectedProducerListener = nullptr;
                     mCore->mConnectedApi = BufferQueueCore::NO_CONNECTED_API;
                     mCore->mConnectedPid = -1;
                     mCore->mSidebandStream.clear();
@@ -1302,7 +1302,7 @@
     } // Autolock scope
 
     // Call back without lock held
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onBuffersReleased();
         listener->onDisconnect();
     }
@@ -1318,7 +1318,7 @@
         listener = mCore->mConsumerListener;
     } // Autolock scope
 
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->onSidebandStreamChanged();
     }
     return NO_ERROR;
@@ -1536,7 +1536,7 @@
         Mutex::Autolock lock(mCore->mMutex);
         listener = mCore->mConsumerListener;
     }
-    if (listener != NULL) {
+    if (listener != nullptr) {
         listener->addAndGetFrameTimestamps(newTimestamps, outDelta);
     }
 }
diff --git a/libs/gui/ConsumerBase.cpp b/libs/gui/ConsumerBase.cpp
index f9e292e..abd9921 100644
--- a/libs/gui/ConsumerBase.cpp
+++ b/libs/gui/ConsumerBase.cpp
@@ -96,7 +96,7 @@
 
 void ConsumerBase::freeBufferLocked(int slotIndex) {
     CB_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
-    mSlots[slotIndex].mGraphicBuffer = 0;
+    mSlots[slotIndex].mGraphicBuffer = nullptr;
     mSlots[slotIndex].mFence = Fence::NO_FENCE;
     mSlots[slotIndex].mFrameNumber = 0;
 }
@@ -110,7 +110,7 @@
         listener = mFrameAvailableListener.promote();
     }
 
-    if (listener != NULL) {
+    if (listener != nullptr) {
         CB_LOGV("actually calling onFrameAvailable");
         listener->onFrameAvailable(item);
     }
@@ -125,7 +125,7 @@
         listener = mFrameAvailableListener.promote();
     }
 
-    if (listener != NULL) {
+    if (listener != nullptr) {
         CB_LOGV("actually calling onFrameReplaced");
         listener->onFrameReplaced(item);
     }
@@ -352,8 +352,8 @@
         return err;
     }
 
-    if (item->mGraphicBuffer != NULL) {
-        if (mSlots[item->mSlot].mGraphicBuffer != NULL) {
+    if (item->mGraphicBuffer != nullptr) {
+        if (mSlots[item->mSlot].mGraphicBuffer != nullptr) {
             freeBufferLocked(item->mSlot);
         }
         mSlots[item->mSlot].mGraphicBuffer = item->mGraphicBuffer;
@@ -468,7 +468,7 @@
     if (slot < 0 || slot >= BufferQueue::NUM_BUFFER_SLOTS) {
         return false;
     }
-    return (mSlots[slot].mGraphicBuffer != NULL &&
+    return (mSlots[slot].mGraphicBuffer != nullptr &&
             mSlots[slot].mGraphicBuffer->handle == graphicBuffer->handle);
 }
 
diff --git a/libs/gui/DisplayEventReceiver.cpp b/libs/gui/DisplayEventReceiver.cpp
index 1757ec1..f5cf1c4 100644
--- a/libs/gui/DisplayEventReceiver.cpp
+++ b/libs/gui/DisplayEventReceiver.cpp
@@ -34,9 +34,9 @@
 
 DisplayEventReceiver::DisplayEventReceiver(ISurfaceComposer::VsyncSource vsyncSource) {
     sp<ISurfaceComposer> sf(ComposerService::getComposerService());
-    if (sf != NULL) {
+    if (sf != nullptr) {
         mEventConnection = sf->createDisplayEventConnection(vsyncSource);
-        if (mEventConnection != NULL) {
+        if (mEventConnection != nullptr) {
             mDataChannel = std::make_unique<gui::BitTube>();
             mEventConnection->stealReceiveChannel(mDataChannel.get());
         }
@@ -47,13 +47,13 @@
 }
 
 status_t DisplayEventReceiver::initCheck() const {
-    if (mDataChannel != NULL)
+    if (mDataChannel != nullptr)
         return NO_ERROR;
     return NO_INIT;
 }
 
 int DisplayEventReceiver::getFd() const {
-    if (mDataChannel == NULL)
+    if (mDataChannel == nullptr)
         return NO_INIT;
 
     return mDataChannel->getFd();
@@ -63,7 +63,7 @@
     if (int32_t(count) < 0)
         return BAD_VALUE;
 
-    if (mEventConnection != NULL) {
+    if (mEventConnection != nullptr) {
         mEventConnection->setVsyncRate(count);
         return NO_ERROR;
     }
@@ -71,7 +71,7 @@
 }
 
 status_t DisplayEventReceiver::requestNextVsync() {
-    if (mEventConnection != NULL) {
+    if (mEventConnection != nullptr) {
         mEventConnection->requestNextVsync();
         return NO_ERROR;
     }
diff --git a/libs/gui/GLConsumer.cpp b/libs/gui/GLConsumer.cpp
index 885efec..faf02f3 100644
--- a/libs/gui/GLConsumer.cpp
+++ b/libs/gui/GLConsumer.cpp
@@ -46,7 +46,6 @@
 #include <utils/Trace.h>
 
 extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
-#define CROP_EXT_STR "EGL_ANDROID_image_crop"
 #define PROT_CONTENT_EXT_STR "EGL_EXT_protected_content"
 #define EGL_PROTECTED_CONTENT_EXT 0x32C0
 
@@ -82,26 +81,6 @@
 Mutex GLConsumer::sStaticInitLock;
 sp<GraphicBuffer> GLConsumer::sReleasedTexImageBuffer;
 
-static bool hasEglAndroidImageCropImpl() {
-    EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-    const char* exts = eglQueryStringImplementationANDROID(dpy, EGL_EXTENSIONS);
-    size_t cropExtLen = strlen(CROP_EXT_STR);
-    size_t extsLen = strlen(exts);
-    bool equal = !strcmp(CROP_EXT_STR, exts);
-    bool atStart = !strncmp(CROP_EXT_STR " ", exts, cropExtLen+1);
-    bool atEnd = (cropExtLen+1) < extsLen &&
-            !strcmp(" " CROP_EXT_STR, exts + extsLen - (cropExtLen+1));
-    bool inMiddle = strstr(exts, " " CROP_EXT_STR " ");
-    return equal || atStart || atEnd || inMiddle;
-}
-
-static bool hasEglAndroidImageCrop() {
-    // Only compute whether the extension is present once the first time this
-    // function is called.
-    static bool hasIt = hasEglAndroidImageCropImpl();
-    return hasIt;
-}
-
 static bool hasEglProtectedContentImpl() {
     EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
     const char* exts = eglQueryString(dpy, EGL_EXTENSIONS);
@@ -122,10 +101,6 @@
     return hasIt;
 }
 
-static bool isEglImageCroppable(const Rect& crop) {
-    return hasEglAndroidImageCrop() && (crop.left == 0 && crop.top == 0);
-}
-
 GLConsumer::GLConsumer(const sp<IGraphicBufferConsumer>& bq, uint32_t tex,
         uint32_t texTarget, bool useFenceSync, bool isControlledByApp) :
     ConsumerBase(bq, isControlledByApp),
@@ -291,7 +266,7 @@
             return err;
         }
 
-        if (mReleasedTexImage == NULL) {
+        if (mReleasedTexImage == nullptr) {
             mReleasedTexImage = new EglImage(getDebugTexImageBuffer());
         }
 
@@ -321,7 +296,7 @@
 
 sp<GraphicBuffer> GLConsumer::getDebugTexImageBuffer() {
     Mutex::Autolock _l(sStaticInitLock);
-    if (CC_UNLIKELY(sReleasedTexImageBuffer == NULL)) {
+    if (CC_UNLIKELY(sReleasedTexImageBuffer == nullptr)) {
         // The first time, create the debug texture in case the application
         // continues to use it.
         sp<GraphicBuffer> buffer = new GraphicBuffer(
@@ -357,7 +332,7 @@
     // If item->mGraphicBuffer is not null, this buffer has not been acquired
     // before, so any prior EglImage created is using a stale buffer. This
     // replaces any old EglImage with a new one (using the new buffer).
-    if (item->mGraphicBuffer != NULL) {
+    if (item->mGraphicBuffer != nullptr) {
         int slot = item->mSlot;
         mEglSlots[slot].mEglImage = new EglImage(item->mGraphicBuffer);
     }
@@ -406,7 +381,7 @@
     // ConsumerBase.
     // We may have to do this even when item.mGraphicBuffer == NULL (which
     // means the buffer was previously acquired).
-    err = mEglSlots[slot].mEglImage->createIfNeeded(mEglDisplay, item.mCrop);
+    err = mEglSlots[slot].mEglImage->createIfNeeded(mEglDisplay);
     if (err != NO_ERROR) {
         GLC_LOGW("updateAndRelease: unable to createImage on display=%p slot=%d",
                 mEglDisplay, slot);
@@ -430,8 +405,8 @@
     }
 
     GLC_LOGV("updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)",
-            mCurrentTexture, mCurrentTextureImage != NULL ?
-                    mCurrentTextureImage->graphicBufferHandle() : 0,
+            mCurrentTexture, mCurrentTextureImage != nullptr ?
+                    mCurrentTextureImage->graphicBufferHandle() : nullptr,
             slot, mSlots[slot].mGraphicBuffer->handle);
 
     // Hang onto the pointer so that it isn't freed in the call to
@@ -491,13 +466,12 @@
 
     glBindTexture(mTexTarget, mTexName);
     if (mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT &&
-            mCurrentTextureImage == NULL) {
+            mCurrentTextureImage == nullptr) {
         GLC_LOGE("bindTextureImage: no currently-bound texture");
         return NO_INIT;
     }
 
-    status_t err = mCurrentTextureImage->createIfNeeded(mEglDisplay,
-                                                        mCurrentCrop);
+    status_t err = mCurrentTextureImage->createIfNeeded(mEglDisplay);
     if (err != NO_ERROR) {
         GLC_LOGW("bindTextureImage: can't create image on display=%p slot=%d",
                 mEglDisplay, mCurrentTexture);
@@ -511,9 +485,7 @@
     // forcing the creation of a new image.
     if ((error = glGetError()) != GL_NO_ERROR) {
         glBindTexture(mTexTarget, mTexName);
-        status_t result = mCurrentTextureImage->createIfNeeded(mEglDisplay,
-                                                               mCurrentCrop,
-                                                               true);
+        status_t result = mCurrentTextureImage->createIfNeeded(mEglDisplay, true);
         if (result != NO_ERROR) {
             GLC_LOGW("bindTextureImage: can't create image on display=%p slot=%d",
                     mEglDisplay, mCurrentTexture);
@@ -655,7 +627,7 @@
     mTexName = tex;
     mAttached = true;
 
-    if (mCurrentTextureImage != NULL) {
+    if (mCurrentTextureImage != nullptr) {
         // This may wait for a buffer a second time. This is likely required if
         // this is a different context, since otherwise the wait could be skipped
         // by bouncing through another context. For the same context the extra
@@ -676,7 +648,7 @@
     if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
         if (SyncFeatures::getInstance().useNativeFenceSync()) {
             EGLSyncKHR sync = eglCreateSyncKHR(dpy,
-                    EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
+                    EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
             if (sync == EGL_NO_SYNC_KHR) {
                 GLC_LOGE("syncForReleaseLocked: error creating EGL fence: %#x",
                         eglGetError());
@@ -720,7 +692,7 @@
 
             // Create a fence for the outstanding accesses in the current
             // OpenGL ES context.
-            fence = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
+            fence = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, nullptr);
             if (fence == EGL_NO_SYNC_KHR) {
                 GLC_LOGE("syncForReleaseLocked: error creating fence: %#x",
                         eglGetError());
@@ -752,11 +724,11 @@
     bool needsRecompute = mFilteringEnabled != enabled;
     mFilteringEnabled = enabled;
 
-    if (needsRecompute && mCurrentTextureImage==NULL) {
+    if (needsRecompute && mCurrentTextureImage==nullptr) {
         GLC_LOGD("setFilteringEnabled called with mCurrentTextureImage == NULL");
     }
 
-    if (needsRecompute && mCurrentTextureImage != NULL) {
+    if (needsRecompute && mCurrentTextureImage != nullptr) {
         computeCurrentTransformMatrixLocked();
     }
 }
@@ -769,8 +741,7 @@
         GLC_LOGD("computeCurrentTransformMatrixLocked: "
                 "mCurrentTextureImage is NULL");
     }
-    computeTransformMatrix(mCurrentTransformMatrix, buf,
-        isEglImageCroppable(mCurrentCrop) ? Rect::EMPTY_RECT : mCurrentCrop,
+    computeTransformMatrix(mCurrentTransformMatrix, buf, mCurrentCrop,
         mCurrentTransform, mFilteringEnabled);
 }
 
@@ -863,10 +834,10 @@
         xform = crop * xform;
     }
 
-    // SurfaceFlinger expects the top of its window textures to be at a Y
-    // coordinate of 0, so GLConsumer must behave the same way.  We don't
-    // want to expose this to applications, however, so we must add an
-    // additional vertical flip to the transform after all the other transforms.
+    // GLConsumer uses the GL convention where (0, 0) is the bottom-left
+    // corner and (1, 1) is the top-right corner.  Add an additional vertical
+    // flip after all other transforms to map from GL convention to buffer
+    // queue memory layout, where (0, 0) is the top-left corner.
     xform = mtxFlipV * xform;
 
     memcpy(outTransform, xform.asArray(), sizeof(xform));
@@ -938,7 +909,7 @@
     }
 
     return (mCurrentTextureImage == nullptr) ?
-            NULL : mCurrentTextureImage->graphicBuffer();
+            nullptr : mCurrentTextureImage->graphicBuffer();
 }
 
 Rect GLConsumer::getCurrentCrop() const {
@@ -1063,8 +1034,7 @@
 GLConsumer::EglImage::EglImage(sp<GraphicBuffer> graphicBuffer) :
     mGraphicBuffer(graphicBuffer),
     mEglImage(EGL_NO_IMAGE_KHR),
-    mEglDisplay(EGL_NO_DISPLAY),
-    mCropRect(Rect::EMPTY_RECT) {
+    mEglDisplay(EGL_NO_DISPLAY) {
 }
 
 GLConsumer::EglImage::~EglImage() {
@@ -1077,13 +1047,11 @@
 }
 
 status_t GLConsumer::EglImage::createIfNeeded(EGLDisplay eglDisplay,
-                                              const Rect& cropRect,
                                               bool forceCreation) {
     // If there's an image and it's no longer valid, destroy it.
     bool haveImage = mEglImage != EGL_NO_IMAGE_KHR;
     bool displayInvalid = mEglDisplay != eglDisplay;
-    bool cropInvalid = hasEglAndroidImageCrop() && mCropRect != cropRect;
-    if (haveImage && (displayInvalid || cropInvalid || forceCreation)) {
+    if (haveImage && (displayInvalid || forceCreation)) {
         if (!eglDestroyImageKHR(mEglDisplay, mEglImage)) {
            ALOGE("createIfNeeded: eglDestroyImageKHR failed");
         }
@@ -1095,14 +1063,12 @@
     // If there's no image, create one.
     if (mEglImage == EGL_NO_IMAGE_KHR) {
         mEglDisplay = eglDisplay;
-        mCropRect = cropRect;
-        mEglImage = createImage(mEglDisplay, mGraphicBuffer, mCropRect);
+        mEglImage = createImage(mEglDisplay, mGraphicBuffer);
     }
 
     // Fail if we can't create a valid image.
     if (mEglImage == EGL_NO_IMAGE_KHR) {
         mEglDisplay = EGL_NO_DISPLAY;
-        mCropRect.makeInvalid();
         const sp<GraphicBuffer>& buffer = mGraphicBuffer;
         ALOGE("Failed to create image. size=%ux%u st=%u usage=%#" PRIx64 " fmt=%d",
             buffer->getWidth(), buffer->getHeight(), buffer->getStride(),
@@ -1119,38 +1085,19 @@
 }
 
 EGLImageKHR GLConsumer::EglImage::createImage(EGLDisplay dpy,
-        const sp<GraphicBuffer>& graphicBuffer, const Rect& crop) {
+        const sp<GraphicBuffer>& graphicBuffer) {
     EGLClientBuffer cbuf =
             static_cast<EGLClientBuffer>(graphicBuffer->getNativeBuffer());
     const bool createProtectedImage =
             (graphicBuffer->getUsage() & GRALLOC_USAGE_PROTECTED) &&
             hasEglProtectedContent();
     EGLint attrs[] = {
-        EGL_IMAGE_PRESERVED_KHR,        EGL_TRUE,
-        EGL_IMAGE_CROP_LEFT_ANDROID,    crop.left,
-        EGL_IMAGE_CROP_TOP_ANDROID,     crop.top,
-        EGL_IMAGE_CROP_RIGHT_ANDROID,   crop.right,
-        EGL_IMAGE_CROP_BOTTOM_ANDROID,  crop.bottom,
+        EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
         createProtectedImage ? EGL_PROTECTED_CONTENT_EXT : EGL_NONE,
         createProtectedImage ? EGL_TRUE : EGL_NONE,
         EGL_NONE,
     };
-    if (!crop.isValid()) {
-        // No crop rect to set, so leave the crop out of the attrib array. Make
-        // sure to propagate the protected content attrs if they are set.
-        attrs[2] = attrs[10];
-        attrs[3] = attrs[11];
-        attrs[4] = EGL_NONE;
-    } else if (!isEglImageCroppable(crop)) {
-        // The crop rect is not at the origin, so we can't set the crop on the
-        // EGLImage because that's not allowed by the EGL_ANDROID_image_crop
-        // extension.  In the future we can add a layered extension that
-        // removes this restriction if there is hardware that can support it.
-        attrs[2] = attrs[10];
-        attrs[3] = attrs[11];
-        attrs[4] = EGL_NONE;
-    }
-    eglInitialize(dpy, 0, 0);
+    eglInitialize(dpy, nullptr, nullptr);
     EGLImageKHR image = eglCreateImageKHR(dpy, EGL_NO_CONTEXT,
             EGL_NATIVE_BUFFER_ANDROID, cbuf, attrs);
     if (image == EGL_NO_IMAGE_KHR) {
diff --git a/libs/gui/IGraphicBufferProducer.cpp b/libs/gui/IGraphicBufferProducer.cpp
index 0b37960..68a6b1f 100644
--- a/libs/gui/IGraphicBufferProducer.cpp
+++ b/libs/gui/IGraphicBufferProducer.cpp
@@ -190,10 +190,10 @@
 
     virtual status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer,
             sp<Fence>* outFence) {
-        if (outBuffer == NULL) {
+        if (outBuffer == nullptr) {
             ALOGE("detachNextBuffer: outBuffer must not be NULL");
             return BAD_VALUE;
-        } else if (outFence == NULL) {
+        } else if (outFence == nullptr) {
             ALOGE("detachNextBuffer: outFence must not be NULL");
             return BAD_VALUE;
         }
@@ -301,7 +301,7 @@
             int api, bool producerControlledByApp, QueueBufferOutput* output) {
         Parcel data, reply;
         data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
-        if (listener != NULL) {
+        if (listener != nullptr) {
             data.writeInt32(1);
             data.writeStrongBinder(IInterface::asBinder(listener));
         } else {
@@ -738,8 +738,8 @@
             int bufferIdx   = data.readInt32();
             sp<GraphicBuffer> buffer;
             int result = requestBuffer(bufferIdx, &buffer);
-            reply->writeInt32(buffer != 0);
-            if (buffer != 0) {
+            reply->writeInt32(buffer != nullptr);
+            if (buffer != nullptr) {
                 reply->write(*buffer);
             }
             reply->writeInt32(result);
@@ -797,12 +797,12 @@
             int32_t result = detachNextBuffer(&buffer, &fence);
             reply->writeInt32(result);
             if (result == NO_ERROR) {
-                reply->writeInt32(buffer != NULL);
-                if (buffer != NULL) {
+                reply->writeInt32(buffer != nullptr);
+                if (buffer != nullptr) {
                     reply->write(*buffer);
                 }
-                reply->writeInt32(fence != NULL);
-                if (fence != NULL) {
+                reply->writeInt32(fence != nullptr);
+                if (fence != nullptr) {
                     reply->write(*fence);
                 }
             }
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index d2d27e8..f99bc53 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -104,32 +104,29 @@
 
     virtual status_t captureScreen(const sp<IBinder>& display, sp<GraphicBuffer>* outBuffer,
                                    Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
-                                   int32_t minLayerZ, int32_t maxLayerZ, bool useIdentityTransform,
-                                   ISurfaceComposer::Rotation rotation) {
+                                   bool useIdentityTransform, ISurfaceComposer::Rotation rotation) {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
         data.writeStrongBinder(display);
         data.write(sourceCrop);
         data.writeUint32(reqWidth);
         data.writeUint32(reqHeight);
-        data.writeInt32(minLayerZ);
-        data.writeInt32(maxLayerZ);
         data.writeInt32(static_cast<int32_t>(useIdentityTransform));
         data.writeInt32(static_cast<int32_t>(rotation));
-        status_t err = remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
-
-        if (err != NO_ERROR) {
-            return err;
+        status_t result = remote()->transact(BnSurfaceComposer::CAPTURE_SCREEN, data, &reply);
+        if (result != NO_ERROR) {
+            ALOGE("captureScreen failed to transact: %d", result);
+            return result;
         }
-
-        err = reply.readInt32();
-        if (err != NO_ERROR) {
-            return err;
+        result = reply.readInt32();
+        if (result != NO_ERROR) {
+            ALOGE("captureScreen failed to readInt32: %d", result);
+            return result;
         }
 
         *outBuffer = new GraphicBuffer();
         reply.read(**outBuffer);
-        return err;
+        return result;
     }
 
     virtual status_t captureLayers(const sp<IBinder>& layerHandleBinder,
@@ -141,21 +138,20 @@
         data.write(sourceCrop);
         data.writeFloat(frameScale);
         data.writeBool(childrenOnly);
-        status_t err = remote()->transact(BnSurfaceComposer::CAPTURE_LAYERS, data, &reply);
-
-        if (err != NO_ERROR) {
-            return err;
+        status_t result = remote()->transact(BnSurfaceComposer::CAPTURE_LAYERS, data, &reply);
+        if (result != NO_ERROR) {
+            ALOGE("captureLayers failed to transact: %d", result);
+            return result;
         }
-
-        err = reply.readInt32();
-        if (err != NO_ERROR) {
-            return err;
+        result = reply.readInt32();
+        if (result != NO_ERROR) {
+            ALOGE("captureLayers failed to readInt32: %d", result);
+            return result;
         }
-
         *outBuffer = new GraphicBuffer();
         reply.read(**outBuffer);
 
-        return err;
+        return result;
     }
 
     virtual bool authenticateSurfaceTexture(
@@ -332,34 +328,6 @@
         return result;
     }
 
-    virtual status_t getDisplayViewport(const sp<IBinder>& display, Rect* outViewport) {
-        Parcel data, reply;
-        status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        if (result != NO_ERROR) {
-            ALOGE("getDisplayViewport failed to writeInterfaceToken: %d", result);
-            return result;
-        }
-        result = data.writeStrongBinder(display);
-        if (result != NO_ERROR) {
-            ALOGE("getDisplayViewport failed to writeStrongBinder: %d", result);
-            return result;
-        }
-        result = remote()->transact(BnSurfaceComposer::GET_DISPLAY_VIEWPORT, data, &reply);
-        if (result != NO_ERROR) {
-            ALOGE("getDisplayViewport failed to transact: %d", result);
-            return result;
-        }
-        result = reply.readInt32();
-        if (result == NO_ERROR) {
-            result = reply.read(*outViewport);
-            if (result != NO_ERROR) {
-                ALOGE("getDisplayViewport failed to read: %d", result);
-                return result;
-            }
-        }
-        return result;
-    }
-
     virtual int getActiveConfig(const sp<IBinder>& display)
     {
         Parcel data, reply;
@@ -372,10 +340,26 @@
     virtual status_t setActiveConfig(const sp<IBinder>& display, int id)
     {
         Parcel data, reply;
-        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        data.writeStrongBinder(display);
-        data.writeInt32(id);
-        remote()->transact(BnSurfaceComposer::SET_ACTIVE_CONFIG, data, &reply);
+        status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (result != NO_ERROR) {
+            ALOGE("setActiveConfig failed to writeInterfaceToken: %d", result);
+            return result;
+        }
+        result = data.writeStrongBinder(display);
+        if (result != NO_ERROR) {
+            ALOGE("setActiveConfig failed to writeStrongBinder: %d", result);
+            return result;
+        }
+        result = data.writeInt32(id);
+        if (result != NO_ERROR) {
+            ALOGE("setActiveConfig failed to writeInt32: %d", result);
+            return result;
+        }
+        result = remote()->transact(BnSurfaceComposer::SET_ACTIVE_CONFIG, data, &reply);
+        if (result != NO_ERROR) {
+            ALOGE("setActiveConfig failed to transact: %d", result);
+            return result;
+        }
         return reply.readInt32();
     }
 
@@ -457,8 +441,16 @@
 
     virtual status_t clearAnimationFrameStats() {
         Parcel data, reply;
-        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        remote()->transact(BnSurfaceComposer::CLEAR_ANIMATION_FRAME_STATS, data, &reply);
+        status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (result != NO_ERROR) {
+            ALOGE("clearAnimationFrameStats failed to writeInterfaceToken: %d", result);
+            return result;
+        }
+        result = remote()->transact(BnSurfaceComposer::CLEAR_ANIMATION_FRAME_STATS, data, &reply);
+        if (result != NO_ERROR) {
+            ALOGE("clearAnimationFrameStats failed to transact: %d", result);
+            return result;
+        }
         return reply.readInt32();
     }
 
@@ -563,6 +555,25 @@
         outLayers->clear();
         return reply.readParcelableVector(outLayers);
     }
+
+    virtual status_t getCompositionPreference(ui::Dataspace* dataSpace,
+                                              ui::PixelFormat* pixelFormat) const {
+        Parcel data, reply;
+        status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (error != NO_ERROR) {
+            return error;
+        }
+        error = remote()->transact(BnSurfaceComposer::GET_COMPOSITION_PREFERENCE, data, &reply);
+        if (error != NO_ERROR) {
+            return error;
+        }
+        error = static_cast<status_t>(reply.readInt32());
+        if (error == NO_ERROR) {
+            *dataSpace = static_cast<ui::Dataspace>(reply.readInt32());
+            *pixelFormat = static_cast<ui::PixelFormat>(reply.readInt32());
+        }
+        return error;
+    }
 };
 
 // Out-of-line virtual method definition to trigger vtable emission in this
@@ -639,13 +650,11 @@
             data.read(sourceCrop);
             uint32_t reqWidth = data.readUint32();
             uint32_t reqHeight = data.readUint32();
-            int32_t minLayerZ = data.readInt32();
-            int32_t maxLayerZ = data.readInt32();
             bool useIdentityTransform = static_cast<bool>(data.readInt32());
             int32_t rotation = data.readInt32();
 
             status_t res = captureScreen(display, &outBuffer, sourceCrop, reqWidth, reqHeight,
-                                         minLayerZ, maxLayerZ, useIdentityTransform,
+                                         useIdentityTransform,
                                          static_cast<ISurfaceComposer::Rotation>(rotation));
             reply->writeInt32(res);
             if (res == NO_ERROR) {
@@ -752,26 +761,6 @@
             }
             return NO_ERROR;
         }
-        case GET_DISPLAY_VIEWPORT: {
-            CHECK_INTERFACE(ISurfaceComposer, data, reply);
-            Rect outViewport;
-            sp<IBinder> display = nullptr;
-            status_t result = data.readStrongBinder(&display);
-            if (result != NO_ERROR) {
-                ALOGE("getDisplayViewport failed to readStrongBinder: %d", result);
-                return result;
-            }
-            result = getDisplayViewport(display, &outViewport);
-            result = reply->writeInt32(result);
-            if (result == NO_ERROR) {
-                result = reply->write(outViewport);
-                if (result != NO_ERROR) {
-                    ALOGE("getDisplayViewport failed to write: %d", result);
-                    return result;
-                }
-            }
-            return NO_ERROR;
-        }
         case GET_ACTIVE_CONFIG: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> display = data.readStrongBinder();
@@ -906,6 +895,18 @@
             }
             return result;
         }
+        case GET_COMPOSITION_PREFERENCE: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            ui::Dataspace dataSpace;
+            ui::PixelFormat pixelFormat;
+            status_t error = getCompositionPreference(&dataSpace, &pixelFormat);
+            reply->writeInt32(error);
+            if (error == NO_ERROR) {
+                reply->writeInt32(static_cast<int32_t>(dataSpace));
+                reply->writeInt32(static_cast<int32_t>(pixelFormat));
+            }
+            return NO_ERROR;
+        }
         default: {
             return BBinder::onTransact(code, data, reply, flags);
         }
diff --git a/libs/gui/LayerDebugInfo.cpp b/libs/gui/LayerDebugInfo.cpp
index d3dc16d..ccde9e0 100644
--- a/libs/gui/LayerDebugInfo.cpp
+++ b/libs/gui/LayerDebugInfo.cpp
@@ -42,7 +42,6 @@
     RETURN_ON_ERROR(parcel->writeInt32(mWidth));
     RETURN_ON_ERROR(parcel->writeInt32(mHeight));
     RETURN_ON_ERROR(parcel->write(mCrop));
-    RETURN_ON_ERROR(parcel->write(mFinalCrop));
     RETURN_ON_ERROR(parcel->writeFloat(mColor.r));
     RETURN_ON_ERROR(parcel->writeFloat(mColor.g));
     RETURN_ON_ERROR(parcel->writeFloat(mColor.b));
@@ -81,7 +80,6 @@
     RETURN_ON_ERROR(parcel->readInt32(&mWidth));
     RETURN_ON_ERROR(parcel->readInt32(&mHeight));
     RETURN_ON_ERROR(parcel->read(mCrop));
-    RETURN_ON_ERROR(parcel->read(mFinalCrop));
     mColor.r = parcel->readFloat();
     RETURN_ON_ERROR(parcel->errorCheck());
     mColor.g = parcel->readFloat();
@@ -121,8 +119,7 @@
             info.mLayerStack, info.mZ, static_cast<double>(info.mX), static_cast<double>(info.mY),
             info.mWidth, info.mHeight);
 
-    result.appendFormat("crop=%s, finalCrop=%s, ",
-            to_string(info.mCrop).c_str(), to_string(info.mFinalCrop).c_str());
+    result.appendFormat("crop=%s, ", to_string(info.mCrop).c_str());
     result.appendFormat("isOpaque=%1d, invalidate=%1d, ", info.mIsOpaque, info.mContentDirty);
     result.appendFormat("dataspace=%s, ", dataspaceDetails(info.mDataSpace).c_str());
     result.appendFormat("pixelformat=%s, ", decodePixelFormat(info.mPixelFormat).c_str());
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index 01acc2d..2b0a461 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "LayerState"
+
 #include <utils/Errors.h>
 #include <binder/Parcel.h>
 #include <gui/ISurfaceComposerClient.h>
@@ -37,19 +39,47 @@
     output.writeUint32(mask);
     *reinterpret_cast<layer_state_t::matrix22_t *>(
             output.writeInplace(sizeof(layer_state_t::matrix22_t))) = matrix;
-    output.write(crop);
-    output.write(finalCrop);
-    output.writeStrongBinder(barrierHandle);
+    output.write(crop_legacy);
+    output.writeStrongBinder(barrierHandle_legacy);
     output.writeStrongBinder(reparentHandle);
-    output.writeUint64(frameNumber);
+    output.writeUint64(frameNumber_legacy);
     output.writeInt32(overrideScalingMode);
-    output.writeStrongBinder(IInterface::asBinder(barrierGbp));
+    output.writeStrongBinder(IInterface::asBinder(barrierGbp_legacy));
     output.writeStrongBinder(relativeLayerHandle);
     output.writeStrongBinder(parentHandleForChild);
     output.writeFloat(color.r);
     output.writeFloat(color.g);
     output.writeFloat(color.b);
     output.write(transparentRegion);
+    output.writeUint32(transform);
+    output.writeBool(transformToDisplayInverse);
+    output.write(crop);
+    if (buffer) {
+        output.writeBool(true);
+        output.write(*buffer);
+    } else {
+        output.writeBool(false);
+    }
+    if (acquireFence) {
+        output.writeBool(true);
+        output.write(*acquireFence);
+    } else {
+        output.writeBool(false);
+    }
+    output.writeUint32(static_cast<uint32_t>(dataspace));
+    output.write(hdrMetadata);
+    output.write(surfaceDamageRegion);
+    output.writeInt32(api);
+    if (sidebandStream) {
+        output.writeBool(true);
+        output.writeNativeHandle(sidebandStream->handle());
+    } else {
+        output.writeBool(false);
+    }
+
+    memcpy(output.writeInplace(16 * sizeof(float)),
+           colorTransform.asArray(), 16 * sizeof(float));
+
     return NO_ERROR;
 }
 
@@ -72,20 +102,39 @@
     } else {
         return BAD_VALUE;
     }
-    input.read(crop);
-    input.read(finalCrop);
-    barrierHandle = input.readStrongBinder();
+    input.read(crop_legacy);
+    barrierHandle_legacy = input.readStrongBinder();
     reparentHandle = input.readStrongBinder();
-    frameNumber = input.readUint64();
+    frameNumber_legacy = input.readUint64();
     overrideScalingMode = input.readInt32();
-    barrierGbp =
-        interface_cast<IGraphicBufferProducer>(input.readStrongBinder());
+    barrierGbp_legacy = interface_cast<IGraphicBufferProducer>(input.readStrongBinder());
     relativeLayerHandle = input.readStrongBinder();
     parentHandleForChild = input.readStrongBinder();
     color.r = input.readFloat();
     color.g = input.readFloat();
     color.b = input.readFloat();
     input.read(transparentRegion);
+    transform = input.readUint32();
+    transformToDisplayInverse = input.readBool();
+    input.read(crop);
+    buffer = new GraphicBuffer();
+    if (input.readBool()) {
+        input.read(*buffer);
+    }
+    acquireFence = new Fence();
+    if (input.readBool()) {
+        input.read(*acquireFence);
+    }
+    dataspace = static_cast<ui::Dataspace>(input.readUint32());
+    input.read(hdrMetadata);
+    input.read(surfaceDamageRegion);
+    api = input.readInt32();
+    if (input.readBool()) {
+        sidebandStream = NativeHandle::create(input.readNativeHandle(), true);
+    }
+
+    colorTransform = mat4(static_cast<const float*>(input.readInplace(16 * sizeof(float))));
+
     return NO_ERROR;
 }
 
@@ -194,19 +243,15 @@
         what |= eLayerStackChanged;
         layerStack = other.layerStack;
     }
-    if (other.what & eCropChanged) {
-        what |= eCropChanged;
-        crop = other.crop;
+    if (other.what & eCropChanged_legacy) {
+        what |= eCropChanged_legacy;
+        crop_legacy = other.crop_legacy;
     }
-    if (other.what & eDeferTransaction) {
-        what |= eDeferTransaction;
-        barrierHandle = other.barrierHandle;
-        barrierGbp = other.barrierGbp;
-        frameNumber = other.frameNumber;
-    }
-    if (other.what & eFinalCropChanged) {
-        what |= eFinalCropChanged;
-        finalCrop = other.finalCrop;
+    if (other.what & eDeferTransaction_legacy) {
+        what |= eDeferTransaction_legacy;
+        barrierHandle_legacy = other.barrierHandle_legacy;
+        barrierGbp_legacy = other.barrierGbp_legacy;
+        frameNumber_legacy = other.frameNumber_legacy;
     }
     if (other.what & eOverrideScalingModeChanged) {
         what |= eOverrideScalingModeChanged;
@@ -234,6 +279,56 @@
     if (other.what & eDestroySurface) {
         what |= eDestroySurface;
     }
+    if (other.what & eTransformChanged) {
+        what |= eTransformChanged;
+        transform = other.transform;
+    }
+    if (other.what & eTransformToDisplayInverseChanged) {
+        what |= eTransformToDisplayInverseChanged;
+        transformToDisplayInverse = other.transformToDisplayInverse;
+    }
+    if (other.what & eCropChanged) {
+        what |= eCropChanged;
+        crop = other.crop;
+    }
+    if (other.what & eBufferChanged) {
+        what |= eBufferChanged;
+        buffer = other.buffer;
+    }
+    if (other.what & eAcquireFenceChanged) {
+        what |= eAcquireFenceChanged;
+        acquireFence = other.acquireFence;
+    }
+    if (other.what & eDataspaceChanged) {
+        what |= eDataspaceChanged;
+        dataspace = other.dataspace;
+    }
+    if (other.what & eHdrMetadataChanged) {
+        what |= eHdrMetadataChanged;
+        hdrMetadata = other.hdrMetadata;
+    }
+    if (other.what & eSurfaceDamageRegionChanged) {
+        what |= eSurfaceDamageRegionChanged;
+        surfaceDamageRegion = other.surfaceDamageRegion;
+    }
+    if (other.what & eApiChanged) {
+        what |= eApiChanged;
+        api = other.api;
+    }
+    if (other.what & eSidebandStreamChanged) {
+        what |= eSidebandStreamChanged;
+        sidebandStream = other.sidebandStream;
+    }
+    if (other.what & eColorTransformChanged) {
+        what |= eColorTransformChanged;
+        colorTransform = other.colorTransform;
+    }
+
+    if ((other.what & what) != other.what) {
+        ALOGE("Unmerged SurfaceComposer Transaction properties. LayerState::merge needs updating? "
+              "other.what=0x%X what=0x%X",
+              other.what, what);
+    }
 }
 
 }; // namespace android
diff --git a/libs/gui/StreamSplitter.cpp b/libs/gui/StreamSplitter.cpp
index 52c9067..2f8e104 100644
--- a/libs/gui/StreamSplitter.cpp
+++ b/libs/gui/StreamSplitter.cpp
@@ -38,11 +38,11 @@
 status_t StreamSplitter::createSplitter(
         const sp<IGraphicBufferConsumer>& inputQueue,
         sp<StreamSplitter>* outSplitter) {
-    if (inputQueue == NULL) {
+    if (inputQueue == nullptr) {
         ALOGE("createSplitter: inputQueue must not be NULL");
         return BAD_VALUE;
     }
-    if (outSplitter == NULL) {
+    if (outSplitter == nullptr) {
         ALOGE("createSplitter: outSplitter must not be NULL");
         return BAD_VALUE;
     }
@@ -74,7 +74,7 @@
 
 status_t StreamSplitter::addOutput(
         const sp<IGraphicBufferProducer>& outputQueue) {
-    if (outputQueue == NULL) {
+    if (outputQueue == nullptr) {
         ALOGE("addOutput: outputQueue must not be NULL");
         return BAD_VALUE;
     }
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index 2de14c8..b505c6f 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -156,7 +156,7 @@
     ATRACE_CALL();
 
     DisplayStatInfo stats;
-    status_t result = composerService()->getDisplayStats(NULL, &stats);
+    status_t result = composerService()->getDisplayStats(nullptr, &stats);
     if (result != NO_ERROR) {
         return result;
     }
@@ -501,7 +501,7 @@
         if (mSharedBufferMode && mAutoRefresh && mSharedBufferSlot !=
                 BufferItem::INVALID_BUFFER_SLOT) {
             sp<GraphicBuffer>& gbuf(mSlots[mSharedBufferSlot].buffer);
-            if (gbuf != NULL) {
+            if (gbuf != nullptr) {
                 *buffer = gbuf.get();
                 *fenceFd = -1;
                 return OK;
@@ -541,7 +541,7 @@
     sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
 
     // this should never happen
-    ALOGE_IF(fence == NULL, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
+    ALOGE_IF(fence == nullptr, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
 
     if (result & IGraphicBufferProducer::RELEASE_ALL_BUFFERS) {
         freeAllBuffers();
@@ -619,7 +619,7 @@
 int Surface::getSlotFromBufferLocked(
         android_native_buffer_t* buffer) const {
     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
-        if (mSlots[i].buffer != NULL &&
+        if (mSlots[i].buffer != nullptr &&
                 mSlots[i].buffer->handle == buffer->handle) {
             return i;
         }
@@ -1268,7 +1268,7 @@
     ATRACE_CALL();
     ALOGV("Surface::detachNextBuffer");
 
-    if (outBuffer == NULL || outFence == NULL) {
+    if (outBuffer == nullptr || outFence == nullptr) {
         return BAD_VALUE;
     }
 
@@ -1277,8 +1277,8 @@
         mRemovedBuffers.clear();
     }
 
-    sp<GraphicBuffer> buffer(NULL);
-    sp<Fence> fence(NULL);
+    sp<GraphicBuffer> buffer(nullptr);
+    sp<Fence> fence(nullptr);
     status_t result = mGraphicBufferProducer->detachNextBuffer(
             &buffer, &fence);
     if (result != NO_ERROR) {
@@ -1286,19 +1286,19 @@
     }
 
     *outBuffer = buffer;
-    if (fence != NULL && fence->isValid()) {
+    if (fence != nullptr && fence->isValid()) {
         *outFence = fence;
     } else {
         *outFence = Fence::NO_FENCE;
     }
 
     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
-        if (mSlots[i].buffer != NULL &&
+        if (mSlots[i].buffer != nullptr &&
                 mSlots[i].buffer->getId() == buffer->getId()) {
             if (mReportRemovedBuffers) {
                 mRemovedBuffers.push_back(mSlots[i].buffer);
             }
-            mSlots[i].buffer = NULL;
+            mSlots[i].buffer = nullptr;
         }
     }
 
@@ -1349,7 +1349,7 @@
     ATRACE_CALL();
 
     Rect realRect(Rect::EMPTY_RECT);
-    if (rect == NULL || rect->isEmpty()) {
+    if (rect == nullptr || rect->isEmpty()) {
         realRect.clear();
     } else {
         realRect = *rect;
@@ -1576,7 +1576,7 @@
 
 void Surface::freeAllBuffers() {
     for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
-        mSlots[i].buffer = 0;
+        mSlots[i].buffer = nullptr;
     }
 }
 
@@ -1616,12 +1616,12 @@
     // src and dst with, height and format must be identical. no verification
     // is done here.
     status_t err;
-    uint8_t* src_bits = NULL;
+    uint8_t* src_bits = nullptr;
     err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(),
             reinterpret_cast<void**>(&src_bits));
     ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
 
-    uint8_t* dst_bits = NULL;
+    uint8_t* dst_bits = nullptr;
     err = dst->lockAsync(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(),
             reinterpret_cast<void**>(&dst_bits), *dstFenceFd);
     ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
@@ -1669,7 +1669,7 @@
 status_t Surface::lock(
         ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
 {
-    if (mLockedBuffer != 0) {
+    if (mLockedBuffer != nullptr) {
         ALOGE("Surface::lock failed, already locked");
         return INVALID_OPERATION;
     }
@@ -1701,7 +1701,7 @@
 
         // figure out if we can copy the frontbuffer back
         const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
-        const bool canCopyBack = (frontBuffer != 0 &&
+        const bool canCopyBack = (frontBuffer != nullptr &&
                 backBuffer->width  == frontBuffer->width &&
                 backBuffer->height == frontBuffer->height &&
                 backBuffer->format == frontBuffer->format);
@@ -1763,7 +1763,7 @@
 
 status_t Surface::unlockAndPost()
 {
-    if (mLockedBuffer == 0) {
+    if (mLockedBuffer == nullptr) {
         ALOGE("Surface::unlockAndPost failed, no locked buffer");
         return INVALID_OPERATION;
     }
@@ -1777,7 +1777,7 @@
             mLockedBuffer->handle, strerror(-err));
 
     mPostedBuffer = mLockedBuffer;
-    mLockedBuffer = 0;
+    mLockedBuffer = nullptr;
     return err;
 }
 
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index f3c6fd2..1ac9609 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -60,7 +60,7 @@
     while (getService(name, &mComposerService) != NO_ERROR) {
         usleep(250000);
     }
-    assert(mComposerService != NULL);
+    assert(mComposerService != nullptr);
 
     // Create the death listener.
     class DeathObserver : public IBinder::DeathRecipient {
@@ -81,9 +81,9 @@
 /*static*/ sp<ISurfaceComposer> ComposerService::getComposerService() {
     ComposerService& instance = ComposerService::getInstance();
     Mutex::Autolock _l(instance.mLock);
-    if (instance.mComposerService == NULL) {
+    if (instance.mComposerService == nullptr) {
         ComposerService::getInstance().connectLocked();
-        assert(instance.mComposerService != NULL);
+        assert(instance.mComposerService != nullptr);
         ALOGD("ComposerService reconnected");
     }
     return instance.mComposerService;
@@ -92,8 +92,8 @@
 void ComposerService::composerServiceDied()
 {
     Mutex::Autolock _l(mLock);
-    mComposerService = NULL;
-    mDeathObserver = NULL;
+    mComposerService = nullptr;
+    mDeathObserver = nullptr;
 }
 
 // ---------------------------------------------------------------------------
@@ -240,9 +240,6 @@
     s->w = w;
     s->h = h;
 
-    // Resizing a surface makes the transaction synchronous.
-    mForceSynchronous = true;
-
     return *this;
 }
 
@@ -344,54 +341,45 @@
     return *this;
 }
 
-SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setCrop(
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setCrop_legacy(
         const sp<SurfaceControl>& sc, const Rect& crop) {
     layer_state_t* s = getLayerState(sc);
     if (!s) {
         mStatus = BAD_INDEX;
         return *this;
     }
-    s->what |= layer_state_t::eCropChanged;
-    s->crop = crop;
+    s->what |= layer_state_t::eCropChanged_legacy;
+    s->crop_legacy = crop;
     return *this;
 }
 
-SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setFinalCrop(const sp<SurfaceControl>& sc, const Rect& crop) {
+SurfaceComposerClient::Transaction&
+SurfaceComposerClient::Transaction::deferTransactionUntil_legacy(const sp<SurfaceControl>& sc,
+                                                                 const sp<IBinder>& handle,
+                                                                 uint64_t frameNumber) {
     layer_state_t* s = getLayerState(sc);
     if (!s) {
         mStatus = BAD_INDEX;
         return *this;
     }
-    s->what |= layer_state_t::eFinalCropChanged;
-    s->finalCrop = crop;
+    s->what |= layer_state_t::eDeferTransaction_legacy;
+    s->barrierHandle_legacy = handle;
+    s->frameNumber_legacy = frameNumber;
     return *this;
 }
 
-SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::deferTransactionUntil(
-        const sp<SurfaceControl>& sc,
-        const sp<IBinder>& handle, uint64_t frameNumber) {
+SurfaceComposerClient::Transaction&
+SurfaceComposerClient::Transaction::deferTransactionUntil_legacy(const sp<SurfaceControl>& sc,
+                                                                 const sp<Surface>& barrierSurface,
+                                                                 uint64_t frameNumber) {
     layer_state_t* s = getLayerState(sc);
     if (!s) {
         mStatus = BAD_INDEX;
         return *this;
     }
-    s->what |= layer_state_t::eDeferTransaction;
-    s->barrierHandle = handle;
-    s->frameNumber = frameNumber;
-    return *this;
-}
-
-SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::deferTransactionUntil(
-        const sp<SurfaceControl>& sc,
-        const sp<Surface>& barrierSurface, uint64_t frameNumber) {
-    layer_state_t* s = getLayerState(sc);
-    if (!s) {
-        mStatus = BAD_INDEX;
-        return *this;
-    }
-    s->what |= layer_state_t::eDeferTransaction;
-    s->barrierGbp = barrierSurface->getIGraphicBufferProducer();
-    s->frameNumber = frameNumber;
+    s->what |= layer_state_t::eDeferTransaction_legacy;
+    s->barrierGbp_legacy = barrierSurface->getIGraphicBufferProducer();
+    s->frameNumber_legacy = frameNumber;
     return *this;
 }
 
@@ -434,6 +422,127 @@
     return *this;
 }
 
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setTransform(
+        const sp<SurfaceControl>& sc, uint32_t transform) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eTransformChanged;
+    s->transform = transform;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction&
+SurfaceComposerClient::Transaction::setTransformToDisplayInverse(const sp<SurfaceControl>& sc,
+                                                                 bool transformToDisplayInverse) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eTransformToDisplayInverseChanged;
+    s->transformToDisplayInverse = transformToDisplayInverse;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setCrop(
+        const sp<SurfaceControl>& sc, const Rect& crop) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eCropChanged;
+    s->crop = crop;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setBuffer(
+        const sp<SurfaceControl>& sc, const sp<GraphicBuffer>& buffer) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eBufferChanged;
+    s->buffer = buffer;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setAcquireFence(
+        const sp<SurfaceControl>& sc, const sp<Fence>& fence) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eAcquireFenceChanged;
+    s->acquireFence = fence;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setDataspace(
+        const sp<SurfaceControl>& sc, ui::Dataspace dataspace) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eDataspaceChanged;
+    s->dataspace = dataspace;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setHdrMetadata(
+        const sp<SurfaceControl>& sc, const HdrMetadata& hdrMetadata) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eHdrMetadataChanged;
+    s->hdrMetadata = hdrMetadata;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setSurfaceDamageRegion(
+        const sp<SurfaceControl>& sc, const Region& surfaceDamageRegion) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eSurfaceDamageRegionChanged;
+    s->surfaceDamageRegion = surfaceDamageRegion;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setApi(
+        const sp<SurfaceControl>& sc, int32_t api) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eApiChanged;
+    s->api = api;
+    return *this;
+}
+
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setSidebandStream(
+        const sp<SurfaceControl>& sc, const sp<NativeHandle>& sidebandStream) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eSidebandStreamChanged;
+    s->sidebandStream = sidebandStream;
+    return *this;
+}
+
 SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::detachChildren(
         const sp<SurfaceControl>& sc) {
     layer_state_t* s = getLayerState(sc);
@@ -493,6 +602,18 @@
     return *this;
 }
 
+SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::setColorTransform(
+    const sp<SurfaceControl>& sc, const mat3& matrix, const vec3& translation) {
+    layer_state_t* s = getLayerState(sc);
+    if (!s) {
+        mStatus = BAD_INDEX;
+        return *this;
+    }
+    s->what |= layer_state_t::eColorTransformChanged;
+    s->colorTransform = mat4(matrix, translation);
+    return *this;
+}
+
 // ---------------------------------------------------------------------------
 
 DisplayState& SurfaceComposerClient::Transaction::getDisplayState(const sp<IBinder>& token) {
@@ -571,12 +692,12 @@
 
 void SurfaceComposerClient::onFirstRef() {
     sp<ISurfaceComposer> sf(ComposerService::getComposerService());
-    if (sf != 0 && mStatus == NO_INIT) {
+    if (sf != nullptr && mStatus == NO_INIT) {
         auto rootProducer = mParent.promote();
         sp<ISurfaceComposerClient> conn;
         conn = (rootProducer != nullptr) ? sf->createScopedConnection(rootProducer) :
                 sf->createConnection();
-        if (conn != 0) {
+        if (conn != nullptr) {
             mClient = conn;
             mStatus = NO_ERROR;
         }
@@ -606,7 +727,7 @@
     // this can be called more than once.
     sp<ISurfaceComposerClient> client;
     Mutex::Autolock _lm(mLock);
-    if (mClient != 0) {
+    if (mClient != nullptr) {
         client = mClient; // hold ref while lock is held
         mClient.clear();
     }
@@ -718,10 +839,6 @@
     return NO_ERROR;
 }
 
-status_t SurfaceComposerClient::getDisplayViewport(const sp<IBinder>& display, Rect* outViewport) {
-    return ComposerService::getComposerService()->getDisplayViewport(display, outViewport);
-}
-
 int SurfaceComposerClient::getActiveConfig(const sp<IBinder>& display) {
     return ComposerService::getComposerService()->getActiveConfig(display);
 }
@@ -749,6 +866,11 @@
     ComposerService::getComposerService()->setPowerMode(token, mode);
 }
 
+status_t SurfaceComposerClient::getCompositionPreference(ui::Dataspace* dataSpace,
+                                                         ui::PixelFormat* pixelFormat) {
+    return ComposerService::getComposerService()->getCompositionPreference(dataSpace, pixelFormat);
+}
+
 status_t SurfaceComposerClient::clearAnimationFrameStats() {
     return ComposerService::getComposerService()->clearAnimationFrameStats();
 }
@@ -766,13 +888,12 @@
 // ----------------------------------------------------------------------------
 
 status_t ScreenshotClient::capture(const sp<IBinder>& display, Rect sourceCrop, uint32_t reqWidth,
-                                   uint32_t reqHeight, int32_t minLayerZ, int32_t maxLayerZ,
-                                   bool useIdentityTransform, uint32_t rotation,
+                                   uint32_t reqHeight, bool useIdentityTransform, uint32_t rotation,
                                    sp<GraphicBuffer>* outBuffer) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
-    if (s == NULL) return NO_INIT;
-    status_t ret = s->captureScreen(display, outBuffer, sourceCrop, reqWidth, reqHeight, minLayerZ,
-                                    maxLayerZ, useIdentityTransform,
+    if (s == nullptr) return NO_INIT;
+    status_t ret = s->captureScreen(display, outBuffer, sourceCrop, reqWidth, reqHeight,
+                                    useIdentityTransform,
                                     static_cast<ISurfaceComposer::Rotation>(rotation));
     if (ret != NO_ERROR) {
         return ret;
@@ -783,7 +904,7 @@
 status_t ScreenshotClient::captureLayers(const sp<IBinder>& layerHandle, Rect sourceCrop,
                                          float frameScale, sp<GraphicBuffer>* outBuffer) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
-    if (s == NULL) return NO_INIT;
+    if (s == nullptr) return NO_INIT;
     status_t ret = s->captureLayers(layerHandle, outBuffer, sourceCrop, frameScale,
                                     false /* childrenOnly */);
     return ret;
@@ -792,7 +913,7 @@
 status_t ScreenshotClient::captureChildLayers(const sp<IBinder>& layerHandle, Rect sourceCrop,
                                               float frameScale, sp<GraphicBuffer>* outBuffer) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
-    if (s == NULL) return NO_INIT;
+    if (s == nullptr) return NO_INIT;
     status_t ret = s->captureLayers(layerHandle, outBuffer, sourceCrop, frameScale,
                                     true /* childrenOnly */);
     return ret;
diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp
index 5eafbb3..3a6dfda 100644
--- a/libs/gui/SurfaceControl.cpp
+++ b/libs/gui/SurfaceControl.cpp
@@ -86,7 +86,7 @@
 }
 
 void SurfaceControl::disconnect() {
-    if (mGraphicBufferProducer != NULL) {
+    if (mGraphicBufferProducer != nullptr) {
         mGraphicBufferProducer->disconnect(
                 BufferQueueCore::CURRENTLY_CONNECTED_API);
     }
@@ -95,28 +95,28 @@
 bool SurfaceControl::isSameSurface(
         const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs)
 {
-    if (lhs == 0 || rhs == 0)
+    if (lhs == nullptr || rhs == nullptr)
         return false;
     return lhs->mHandle == rhs->mHandle;
 }
 
 status_t SurfaceControl::clearLayerFrameStats() const {
     status_t err = validate();
-    if (err < 0) return err;
+    if (err != NO_ERROR) return err;
     const sp<SurfaceComposerClient>& client(mClient);
     return client->clearLayerFrameStats(mHandle);
 }
 
 status_t SurfaceControl::getLayerFrameStats(FrameStats* outStats) const {
     status_t err = validate();
-    if (err < 0) return err;
+    if (err != NO_ERROR) return err;
     const sp<SurfaceComposerClient>& client(mClient);
     return client->getLayerFrameStats(mHandle, outStats);
 }
 
 status_t SurfaceControl::validate() const
 {
-    if (mHandle==0 || mClient==0) {
+    if (mHandle==nullptr || mClient==nullptr) {
         ALOGE("invalid handle (%p) or client (%p)",
                 mHandle.get(), mClient.get());
         return NO_INIT;
@@ -128,7 +128,7 @@
         const sp<SurfaceControl>& control, Parcel* parcel)
 {
     sp<IGraphicBufferProducer> bp;
-    if (control != NULL) {
+    if (control != nullptr) {
         bp = control->mGraphicBufferProducer;
     }
     return parcel->writeStrongBinder(IInterface::asBinder(bp));
@@ -146,7 +146,7 @@
 sp<Surface> SurfaceControl::getSurface() const
 {
     Mutex::Autolock _l(mLock);
-    if (mSurfaceData == 0) {
+    if (mSurfaceData == nullptr) {
         return generateSurfaceLocked();
     }
     return mSurfaceData;
diff --git a/libs/gui/SyncFeatures.cpp b/libs/gui/SyncFeatures.cpp
index afa15c5..fcae05c 100644
--- a/libs/gui/SyncFeatures.cpp
+++ b/libs/gui/SyncFeatures.cpp
@@ -41,7 +41,7 @@
     // This can only be called after EGL has been initialized; otherwise the
     // check below will abort.
     const char* exts = eglQueryStringImplementationANDROID(dpy, EGL_EXTENSIONS);
-    LOG_ALWAYS_FATAL_IF(exts == NULL, "eglQueryStringImplementationANDROID failed");
+    LOG_ALWAYS_FATAL_IF(exts == nullptr, "eglQueryStringImplementationANDROID failed");
     if (strstr(exts, "EGL_ANDROID_native_fence_sync")) {
         // This makes GLConsumer use the EGL_ANDROID_native_fence_sync
         // extension to create Android native fences to signal when all
diff --git a/libs/gui/bufferqueue/1.0/H2BGraphicBufferProducer.cpp b/libs/gui/bufferqueue/1.0/H2BGraphicBufferProducer.cpp
index 3b89291..8af1a67 100644
--- a/libs/gui/bufferqueue/1.0/H2BGraphicBufferProducer.cpp
+++ b/libs/gui/bufferqueue/1.0/H2BGraphicBufferProducer.cpp
@@ -100,7 +100,12 @@
  */
 // convert: Return<Status> -> status_t
 inline status_t toStatusT(Return<Status> const& t) {
-    return t.isOk() ? static_cast<status_t>(static_cast<Status>(t)) : UNKNOWN_ERROR;
+    if (t.isOk()) {
+        return static_cast<status_t>(static_cast<Status>(t));
+    } else if (t.isDeadObject()) {
+        return DEAD_OBJECT;
+    }
+    return UNKNOWN_ERROR;
 }
 
 /**
@@ -111,7 +116,7 @@
  */
 // convert: Return<void> -> status_t
 inline status_t toStatusT(Return<void> const& t) {
-    return t.isOk() ? OK : UNKNOWN_ERROR;
+    return t.isOk() ? OK : (t.isDeadObject() ? DEAD_OBJECT : UNKNOWN_ERROR);
 }
 
 /**
diff --git a/libs/gui/include/gui/BufferHubProducer.h b/libs/gui/include/gui/BufferHubProducer.h
index 23c9909..f7af19b 100644
--- a/libs/gui/include/gui/BufferHubProducer.h
+++ b/libs/gui/include/gui/BufferHubProducer.h
@@ -165,6 +165,10 @@
     // buffers are acquired by the consumer, we can't .
     status_t FreeAllBuffers();
 
+    // Helper function that implements the detachBuffer() call, but assuming |mutex_| has been
+    // locked already.
+    status_t DetachBufferLocked(size_t slot);
+
     // Concreate implementation backed by BufferHubBuffer.
     std::shared_ptr<dvr::ProducerQueue> queue_;
 
diff --git a/libs/gui/include/gui/CpuConsumer.h b/libs/gui/include/gui/CpuConsumer.h
index d375611..806fbe8 100644
--- a/libs/gui/include/gui/CpuConsumer.h
+++ b/libs/gui/include/gui/CpuConsumer.h
@@ -70,7 +70,7 @@
         uint32_t    chromaStep;
 
         LockedBuffer() :
-            data(NULL),
+            data(nullptr),
             width(0),
             height(0),
             format(PIXEL_FORMAT_NONE),
@@ -82,8 +82,8 @@
             dataSpace(HAL_DATASPACE_UNKNOWN),
             frameNumber(0),
             flexFormat(PIXEL_FORMAT_NONE),
-            dataCb(NULL),
-            dataCr(NULL),
+            dataCb(nullptr),
+            dataCr(nullptr),
             chromaStride(0),
             chromaStep(0)
         {}
diff --git a/libs/gui/include/gui/GLConsumer.h b/libs/gui/include/gui/GLConsumer.h
index 71ed3bf..46a99e1 100644
--- a/libs/gui/include/gui/GLConsumer.h
+++ b/libs/gui/include/gui/GLConsumer.h
@@ -140,7 +140,8 @@
 
     // Scale the crop down horizontally or vertically such that it has the
     // same aspect ratio as the buffer does.
-    static Rect scaleDownCrop(const Rect& crop, uint32_t bufferWidth, uint32_t bufferHeight);
+    static Rect scaleDownCrop(const Rect& crop, uint32_t bufferWidth,
+            uint32_t bufferHeight);
 
     // getTimestamp retrieves the timestamp associated with the texture image
     // set by the most recent call to updateTexImage.
@@ -305,7 +306,6 @@
         // createIfNeeded creates an EGLImage if required (we haven't created
         // one yet, or the EGLDisplay or crop-rect has changed).
         status_t createIfNeeded(EGLDisplay display,
-                                const Rect& cropRect,
                                 bool forceCreate = false);
 
         // This calls glEGLImageTargetTexture2DOES to bind the image to the
@@ -314,7 +314,7 @@
 
         const sp<GraphicBuffer>& graphicBuffer() { return mGraphicBuffer; }
         const native_handle* graphicBufferHandle() {
-            return mGraphicBuffer == NULL ? NULL : mGraphicBuffer->handle;
+            return mGraphicBuffer == nullptr ? nullptr : mGraphicBuffer->handle;
         }
 
     private:
@@ -324,7 +324,7 @@
 
         // createImage creates a new EGLImage from a GraphicBuffer.
         EGLImageKHR createImage(EGLDisplay dpy,
-                const sp<GraphicBuffer>& graphicBuffer, const Rect& crop);
+                const sp<GraphicBuffer>& graphicBuffer);
 
         // Disallow copying
         EglImage(const EglImage& rhs);
diff --git a/libs/gui/include/gui/IGraphicBufferProducer.h b/libs/gui/include/gui/IGraphicBufferProducer.h
index 887654e..8ff8d81 100644
--- a/libs/gui/include/gui/IGraphicBufferProducer.h
+++ b/libs/gui/include/gui/IGraphicBufferProducer.h
@@ -345,7 +345,7 @@
             *outScalingMode = scalingMode;
             *outTransform = transform;
             *outFence = fence;
-            if (outStickyTransform != NULL) {
+            if (outStickyTransform != nullptr) {
                 *outStickyTransform = stickyTransform;
             }
             if (outGetFrameTimestamps) {
diff --git a/libs/gui/include/gui/ISurfaceComposer.h b/libs/gui/include/gui/ISurfaceComposer.h
index 99a3a75..a55cfe0 100644
--- a/libs/gui/include/gui/ISurfaceComposer.h
+++ b/libs/gui/include/gui/ISurfaceComposer.h
@@ -157,9 +157,6 @@
     virtual status_t getDisplayStats(const sp<IBinder>& display,
             DisplayStatInfo* stats) = 0;
 
-    /* returns display viewport information of the given display */
-    virtual status_t getDisplayViewport(const sp<IBinder>& display, Rect* outViewport) = 0;
-
     /* indicates which of the configurations returned by getDisplayInfo is
      * currently active */
     virtual int getActiveConfig(const sp<IBinder>& display) = 0;
@@ -174,13 +171,29 @@
     virtual status_t setActiveColorMode(const sp<IBinder>& display,
             ui::ColorMode colorMode) = 0;
 
-    /* Capture the specified screen. requires READ_FRAME_BUFFER permission
-     * This function will fail if there is a secure window on screen.
+    /**
+     * Capture the specified screen. This requires READ_FRAME_BUFFER
+     * permission.  This function will fail if there is a secure window on
+     * screen.
+     *
+     * This function can capture a subregion (the source crop) of the screen.
+     * The subregion can be optionally rotated.  It will also be scaled to
+     * match the size of the output buffer.
+     *
+     * At the moment, sourceCrop is ignored and is always set to the visible
+     * region (projected display viewport) of the screen.
+     *
+     * reqWidth and reqHeight specifies the size of the buffer.  When either
+     * of them is 0, they are set to the size of the logical display viewport.
+     *
+     * When useIdentityTransform is true, layer transformations are disabled.
+     *
+     * rotation specifies the rotation of the source crop (and the pixels in
+     * it) around its center.
      */
     virtual status_t captureScreen(const sp<IBinder>& display, sp<GraphicBuffer>* outBuffer,
                                    Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
-                                   int32_t minLayerZ, int32_t maxLayerZ, bool useIdentityTransform,
-                                   Rotation rotation = eRotateNone) = 0;
+                                   bool useIdentityTransform, Rotation rotation = eRotateNone) = 0;
 
     /**
      * Capture a subtree of the layer hierarchy, potentially ignoring the root node.
@@ -217,18 +230,21 @@
      * Requires the ACCESS_SURFACE_FLINGER permission.
      */
     virtual status_t getLayerDebugInfo(std::vector<LayerDebugInfo>* outLayers) const = 0;
+
+    virtual status_t getCompositionPreference(ui::Dataspace* dataSpace,
+                                              ui::PixelFormat* pixelFormat) const = 0;
 };
 
 // ----------------------------------------------------------------------------
 
 class BnSurfaceComposer: public BnInterface<ISurfaceComposer> {
 public:
-    enum {
+    enum ISurfaceComposerTag {
         // Note: BOOT_FINISHED must remain this value, it is called from
         // Java by ActivityManagerService.
         BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION,
         CREATE_CONNECTION,
-        UNUSED, // formerly CREATE_GRAPHIC_BUFFER_ALLOC
+        CREATE_GRAPHIC_BUFFER_ALLOC_UNUSED, // unused, fails permissions check
         CREATE_DISPLAY_EVENT_CONNECTION,
         CREATE_DISPLAY,
         DESTROY_DISPLAY,
@@ -239,7 +255,7 @@
         GET_DISPLAY_CONFIGS,
         GET_ACTIVE_CONFIG,
         SET_ACTIVE_CONFIG,
-        CONNECT_DISPLAY,
+        CONNECT_DISPLAY_UNUSED, // unused, fails permissions check
         CAPTURE_SCREEN,
         CAPTURE_LAYERS,
         CLEAR_ANIMATION_FRAME_STATS,
@@ -254,7 +270,7 @@
         INJECT_VSYNC,
         GET_LAYER_DEBUG_INFO,
         CREATE_SCOPED_CONNECTION,
-        GET_DISPLAY_VIEWPORT
+        GET_COMPOSITION_PREFERENCE,
     };
 
     virtual status_t onTransact(uint32_t code, const Parcel& data,
diff --git a/libs/gui/include/gui/ISurfaceComposerClient.h b/libs/gui/include/gui/ISurfaceComposerClient.h
index 8dfc99a..82b01b8 100644
--- a/libs/gui/include/gui/ISurfaceComposerClient.h
+++ b/libs/gui/include/gui/ISurfaceComposerClient.h
@@ -40,8 +40,10 @@
         eProtectedByDRM = 0x00001000,
         eCursorWindow = 0x00002000,
 
-        eFXSurfaceNormal = 0x00000000,
+        eFXSurfaceBufferQueue = 0x00000000,
         eFXSurfaceColor = 0x00020000,
+        eFXSurfaceBufferState = 0x00040000,
+        eFXSurfaceContainer = 0x00080000,
         eFXSurfaceMask = 0x000F0000,
     };
 
diff --git a/libs/gui/include/gui/LayerDebugInfo.h b/libs/gui/include/gui/LayerDebugInfo.h
index 92bd8c5..66a7b4d 100644
--- a/libs/gui/include/gui/LayerDebugInfo.h
+++ b/libs/gui/include/gui/LayerDebugInfo.h
@@ -52,7 +52,6 @@
     int32_t mWidth = -1;
     int32_t mHeight = -1;
     Rect mCrop = Rect::INVALID_RECT;
-    Rect mFinalCrop = Rect::INVALID_RECT;
     half4 mColor = half4(1.0_hf, 1.0_hf, 1.0_hf, 0.0_hf);
     uint32_t mFlags = 0;
     PixelFormat mPixelFormat = PIXEL_FORMAT_NONE;
diff --git a/libs/gui/include/gui/LayerState.h b/libs/gui/include/gui/LayerState.h
index 788962e..e06e2b1 100644
--- a/libs/gui/include/gui/LayerState.h
+++ b/libs/gui/include/gui/LayerState.h
@@ -22,10 +22,12 @@
 
 #include <utils/Errors.h>
 
-#include <ui/Region.h>
-#include <ui/Rect.h>
 #include <gui/IGraphicBufferProducer.h>
+#include <math/mat4.h>
 #include <math/vec3.h>
+#include <ui/GraphicTypes.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
 
 namespace android {
 
@@ -36,113 +38,146 @@
  * Used to communicate layer information between SurfaceFlinger and its clients.
  */
 struct layer_state_t {
-
-
     enum {
-        eLayerHidden        = 0x01,     // SURFACE_HIDDEN in SurfaceControl.java
-        eLayerOpaque        = 0x02,     // SURFACE_OPAQUE
-        eLayerSecure        = 0x80,     // SECURE
+        eLayerHidden = 0x01, // SURFACE_HIDDEN in SurfaceControl.java
+        eLayerOpaque = 0x02, // SURFACE_OPAQUE
+        eLayerSecure = 0x80, // SECURE
     };
 
     enum {
-        ePositionChanged            = 0x00000001,
-        eLayerChanged               = 0x00000002,
-        eSizeChanged                = 0x00000004,
-        eAlphaChanged               = 0x00000008,
-        eMatrixChanged              = 0x00000010,
-        eTransparentRegionChanged   = 0x00000020,
-        eFlagsChanged               = 0x00000040,
-        eLayerStackChanged          = 0x00000080,
-        eCropChanged                = 0x00000100,
-        eDeferTransaction           = 0x00000200,
-        eFinalCropChanged           = 0x00000400,
-        eOverrideScalingModeChanged = 0x00000800,
-        eGeometryAppliesWithResize  = 0x00001000,
-        eReparentChildren           = 0x00002000,
-        eDetachChildren             = 0x00004000,
-        eRelativeLayerChanged       = 0x00008000,
-        eReparent                   = 0x00010000,
-        eColorChanged               = 0x00020000,
-        eDestroySurface             = 0x00040000
+        ePositionChanged = 0x00000001,
+        eLayerChanged = 0x00000002,
+        eSizeChanged = 0x00000004,
+        eAlphaChanged = 0x00000008,
+        eMatrixChanged = 0x00000010,
+        eTransparentRegionChanged = 0x00000020,
+        eFlagsChanged = 0x00000040,
+        eLayerStackChanged = 0x00000080,
+        eCropChanged_legacy = 0x00000100,
+        eDeferTransaction_legacy = 0x00000200,
+        eOverrideScalingModeChanged = 0x00000400,
+        eGeometryAppliesWithResize = 0x00000800,
+        eReparentChildren = 0x00001000,
+        eDetachChildren = 0x00002000,
+        eRelativeLayerChanged = 0x00004000,
+        eReparent = 0x00008000,
+        eColorChanged = 0x00010000,
+        eDestroySurface = 0x00020000,
+        eTransformChanged = 0x00040000,
+        eTransformToDisplayInverseChanged = 0x00080000,
+        eCropChanged = 0x00100000,
+        eBufferChanged = 0x00200000,
+        eAcquireFenceChanged = 0x00400000,
+        eDataspaceChanged = 0x00800000,
+        eHdrMetadataChanged = 0x01000000,
+        eSurfaceDamageRegionChanged = 0x02000000,
+        eApiChanged = 0x04000000,
+        eSidebandStreamChanged = 0x08000000,
+        eColorTransformChanged = 0x10000000,
     };
 
     layer_state_t()
-        :   what(0),
-            x(0), y(0), z(0), w(0), h(0), layerStack(0),
-            alpha(0), flags(0), mask(0),
-            reserved(0), crop(Rect::INVALID_RECT),
-            finalCrop(Rect::INVALID_RECT), frameNumber(0),
-            overrideScalingMode(-1)
-    {
+          : what(0),
+            x(0),
+            y(0),
+            z(0),
+            w(0),
+            h(0),
+            layerStack(0),
+            alpha(0),
+            flags(0),
+            mask(0),
+            reserved(0),
+            crop_legacy(Rect::INVALID_RECT),
+            frameNumber_legacy(0),
+            overrideScalingMode(-1),
+            transform(0),
+            transformToDisplayInverse(false),
+            crop(Rect::INVALID_RECT),
+            dataspace(ui::Dataspace::UNKNOWN),
+            surfaceDamageRegion(),
+            api(-1),
+            colorTransform(mat4()) {
         matrix.dsdx = matrix.dtdy = 1.0f;
         matrix.dsdy = matrix.dtdx = 0.0f;
+        hdrMetadata.validTypes = 0;
     }
 
     void merge(const layer_state_t& other);
-    status_t    write(Parcel& output) const;
-    status_t    read(const Parcel& input);
+    status_t write(Parcel& output) const;
+    status_t read(const Parcel& input);
 
-            struct matrix22_t {
-                float   dsdx{0};
-                float   dtdx{0};
-                float   dtdy{0};
-                float   dsdy{0};
-            };
-            sp<IBinder>     surface;
-            uint32_t        what;
-            float           x;
-            float           y;
-            int32_t         z;
-            uint32_t        w;
-            uint32_t        h;
-            uint32_t        layerStack;
-            float           alpha;
-            uint8_t         flags;
-            uint8_t         mask;
-            uint8_t         reserved;
-            matrix22_t      matrix;
-            Rect            crop;
-            Rect            finalCrop;
-            sp<IBinder>     barrierHandle;
-            sp<IBinder>     reparentHandle;
-            uint64_t        frameNumber;
-            int32_t         overrideScalingMode;
+    struct matrix22_t {
+        float dsdx{0};
+        float dtdx{0};
+        float dtdy{0};
+        float dsdy{0};
+    };
+    sp<IBinder> surface;
+    uint32_t what;
+    float x;
+    float y;
+    int32_t z;
+    uint32_t w;
+    uint32_t h;
+    uint32_t layerStack;
+    float alpha;
+    uint8_t flags;
+    uint8_t mask;
+    uint8_t reserved;
+    matrix22_t matrix;
+    Rect crop_legacy;
+    sp<IBinder> barrierHandle_legacy;
+    sp<IBinder> reparentHandle;
+    uint64_t frameNumber_legacy;
+    int32_t overrideScalingMode;
 
-            sp<IGraphicBufferProducer> barrierGbp;
+    sp<IGraphicBufferProducer> barrierGbp_legacy;
 
-            sp<IBinder>     relativeLayerHandle;
+    sp<IBinder> relativeLayerHandle;
 
-            sp<IBinder>     parentHandleForChild;
+    sp<IBinder> parentHandleForChild;
 
-            half3           color;
+    half3 color;
 
-            // non POD must be last. see write/read
-            Region          transparentRegion;
+    // non POD must be last. see write/read
+    Region transparentRegion;
+
+    uint32_t transform;
+    bool transformToDisplayInverse;
+    Rect crop;
+    sp<GraphicBuffer> buffer;
+    sp<Fence> acquireFence;
+    ui::Dataspace dataspace;
+    HdrMetadata hdrMetadata;
+    Region surfaceDamageRegion;
+    int32_t api;
+    sp<NativeHandle> sidebandStream;
+    mat4 colorTransform;
 };
 
 struct ComposerState {
     sp<ISurfaceComposerClient> client;
     layer_state_t state;
-    status_t    write(Parcel& output) const;
-    status_t    read(const Parcel& input);
+    status_t write(Parcel& output) const;
+    status_t read(const Parcel& input);
 };
 
 struct DisplayState {
-
     enum {
-        eOrientationDefault     = 0,
-        eOrientation90          = 1,
-        eOrientation180         = 2,
-        eOrientation270         = 3,
-        eOrientationUnchanged   = 4,
-        eOrientationSwapMask    = 0x01
+        eOrientationDefault = 0,
+        eOrientation90 = 1,
+        eOrientation180 = 2,
+        eOrientation270 = 3,
+        eOrientationUnchanged = 4,
+        eOrientationSwapMask = 0x01
     };
 
     enum {
-        eSurfaceChanged             = 0x01,
-        eLayerStackChanged          = 0x02,
-        eDisplayProjectionChanged   = 0x04,
-        eDisplaySizeChanged         = 0x08
+        eSurfaceChanged = 0x01,
+        eLayerStackChanged = 0x02,
+        eDisplayProjectionChanged = 0x04,
+        eDisplaySizeChanged = 0x08
     };
 
     DisplayState();
@@ -152,29 +187,40 @@
     sp<IBinder> token;
     sp<IGraphicBufferProducer> surface;
     uint32_t layerStack;
+
+    // These states define how layers are projected onto the physical display.
+    //
+    // Layers are first clipped to `viewport'.  They are then translated and
+    // scaled from `viewport' to `frame'.  Finally, they are rotated according
+    // to `orientation', `width', and `height'.
+    //
+    // For example, assume viewport is Rect(0, 0, 200, 100), frame is Rect(20,
+    // 10, 420, 210), and the size of the display is WxH.  When orientation is
+    // 0, layers will be scaled by a factor of 2 and translated by (20, 10).
+    // When orientation is 1, layers will be additionally rotated by 90
+    // degrees around the origin clockwise and translated by (W, 0).
     uint32_t orientation;
     Rect viewport;
     Rect frame;
+
     uint32_t width, height;
+
     status_t write(Parcel& output) const;
     status_t read(const Parcel& input);
 };
 
-static inline
-int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
+static inline int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
     if (lhs.client < rhs.client) return -1;
     if (lhs.client > rhs.client) return 1;
-    if (lhs.state.surface < rhs.state.surface)  return -1;
-    if (lhs.state.surface > rhs.state.surface)  return 1;
+    if (lhs.state.surface < rhs.state.surface) return -1;
+    if (lhs.state.surface > rhs.state.surface) return 1;
     return 0;
 }
 
-static inline
-int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
+static inline int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
     return compare_type(lhs.token, rhs.token);
 }
 
 }; // namespace android
 
 #endif // ANDROID_SF_LAYER_STATE_H
-
diff --git a/libs/gui/include/gui/Surface.h b/libs/gui/include/gui/Surface.h
index 9aeafae..32ee595 100644
--- a/libs/gui/include/gui/Surface.h
+++ b/libs/gui/include/gui/Surface.h
@@ -80,7 +80,7 @@
     /* convenience function to check that the given surface is non NULL as
      * well as its IGraphicBufferProducer */
     static bool isValid(const sp<Surface>& surface) {
-        return surface != NULL && surface->getIGraphicBufferProducer() != NULL;
+        return surface != nullptr && surface->getIGraphicBufferProducer() != nullptr;
     }
 
     /* Attaches a sideband buffer stream to the Surface's IGraphicBufferProducer.
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index ad8a8b0..69a759f 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -69,7 +69,7 @@
 
     // callback when the composer is dies
     status_t linkToComposerDeath(const sp<IBinder::DeathRecipient>& recipient,
-            void* cookie = NULL, uint32_t flags = 0);
+            void* cookie = nullptr, uint32_t flags = 0);
 
     // Get a list of supported configurations for a given display
     static status_t getDisplayConfigs(const sp<IBinder>& display,
@@ -79,9 +79,6 @@
     static status_t getDisplayInfo(const sp<IBinder>& display,
             DisplayInfo* info);
 
-    // Get the display viewport for the given display
-    static status_t getDisplayViewport(const sp<IBinder>& display, Rect* outViewport);
-
     // Get the index of the current active configuration (relative to the list
     // returned by getDisplayInfo)
     static int getActiveConfig(const sp<IBinder>& display);
@@ -104,6 +101,10 @@
     /* Triggers screen on/off or low power mode and waits for it to complete */
     static void setDisplayPowerMode(const sp<IBinder>& display, int mode);
 
+    //
+    static status_t getCompositionPreference(ui::Dataspace* dataSpace,
+                                             ui::PixelFormat* pixelFormat);
+
     // ------------------------------------------------------------------------
     // surface creation / destruction
 
@@ -203,22 +204,20 @@
                 float alpha);
         Transaction& setMatrix(const sp<SurfaceControl>& sc,
                 float dsdx, float dtdx, float dtdy, float dsdy);
-        Transaction& setCrop(const sp<SurfaceControl>& sc, const Rect& crop);
-        Transaction& setFinalCrop(const sp<SurfaceControl>& sc, const Rect& crop);
+        Transaction& setCrop_legacy(const sp<SurfaceControl>& sc, const Rect& crop);
         Transaction& setLayerStack(const sp<SurfaceControl>& sc, uint32_t layerStack);
         // Defers applying any changes made in this transaction until the Layer
         // identified by handle reaches the given frameNumber. If the Layer identified
         // by handle is removed, then we will apply this transaction regardless of
         // what frame number has been reached.
-        Transaction& deferTransactionUntil(const sp<SurfaceControl>& sc,
-                const sp<IBinder>& handle,
-                uint64_t frameNumber);
-        // A variant of deferTransactionUntil which identifies the Layer we wait for by
+        Transaction& deferTransactionUntil_legacy(const sp<SurfaceControl>& sc,
+                                                  const sp<IBinder>& handle, uint64_t frameNumber);
+        // A variant of deferTransactionUntil_legacy which identifies the Layer we wait for by
         // Surface instead of Handle. Useful for clients which may not have the
         // SurfaceControl for some of their Surfaces. Otherwise behaves identically.
-        Transaction& deferTransactionUntil(const sp<SurfaceControl>& sc,
-                const sp<Surface>& barrierSurface,
-                uint64_t frameNumber);
+        Transaction& deferTransactionUntil_legacy(const sp<SurfaceControl>& sc,
+                                                  const sp<Surface>& barrierSurface,
+                                                  uint64_t frameNumber);
         // Reparents all children of this layer to the new parent handle.
         Transaction& reparentChildren(const sp<SurfaceControl>& sc,
                 const sp<IBinder>& newParentHandle);
@@ -231,6 +230,20 @@
 
         Transaction& setColor(const sp<SurfaceControl>& sc, const half3& color);
 
+        Transaction& setTransform(const sp<SurfaceControl>& sc, uint32_t transform);
+        Transaction& setTransformToDisplayInverse(const sp<SurfaceControl>& sc,
+                                                  bool transformToDisplayInverse);
+        Transaction& setCrop(const sp<SurfaceControl>& sc, const Rect& crop);
+        Transaction& setBuffer(const sp<SurfaceControl>& sc, const sp<GraphicBuffer>& buffer);
+        Transaction& setAcquireFence(const sp<SurfaceControl>& sc, const sp<Fence>& fence);
+        Transaction& setDataspace(const sp<SurfaceControl>& sc, ui::Dataspace dataspace);
+        Transaction& setHdrMetadata(const sp<SurfaceControl>& sc, const HdrMetadata& hdrMetadata);
+        Transaction& setSurfaceDamageRegion(const sp<SurfaceControl>& sc,
+                                            const Region& surfaceDamageRegion);
+        Transaction& setApi(const sp<SurfaceControl>& sc, int32_t api);
+        Transaction& setSidebandStream(const sp<SurfaceControl>& sc,
+                                       const sp<NativeHandle>& sidebandStream);
+
         // Detaches all child surfaces (and their children recursively)
         // from their SurfaceControl.
         // The child SurfaceControls will not throw exceptions or return errors,
@@ -256,6 +269,10 @@
 
         Transaction& destroySurface(const sp<SurfaceControl>& sc);
 
+        // Set a color transform matrix on the given layer on the built-in display.
+        Transaction& setColorTransform(const sp<SurfaceControl>& sc, const mat3& matrix,
+                                       const vec3& translation);
+
         status_t setDisplaySurface(const sp<IBinder>& token,
                 const sp<IGraphicBufferProducer>& bufferProducer);
 
@@ -313,8 +330,7 @@
     // if cropping isn't required, callers may pass in a default Rect, e.g.:
     //   capture(display, producer, Rect(), reqWidth, ...);
     static status_t capture(const sp<IBinder>& display, Rect sourceCrop, uint32_t reqWidth,
-                            uint32_t reqHeight, int32_t minLayerZ, int32_t maxLayerZ,
-                            bool useIdentityTransform, uint32_t rotation,
+                            uint32_t reqHeight, bool useIdentityTransform, uint32_t rotation,
                             sp<GraphicBuffer>* outBuffer);
     static status_t captureLayers(const sp<IBinder>& layerHandle, Rect sourceCrop, float frameScale,
                                   sp<GraphicBuffer>* outBuffer);
diff --git a/libs/gui/include/gui/SurfaceControl.h b/libs/gui/include/gui/SurfaceControl.h
index bd987dd..ccb30fa 100644
--- a/libs/gui/include/gui/SurfaceControl.h
+++ b/libs/gui/include/gui/SurfaceControl.h
@@ -48,11 +48,11 @@
     void writeToParcel(Parcel* parcel);
 
     static bool isValid(const sp<SurfaceControl>& surface) {
-        return (surface != 0) && surface->isValid();
+        return (surface != nullptr) && surface->isValid();
     }
 
     bool isValid() {
-        return mHandle!=0 && mClient!=0;
+        return mHandle!=nullptr && mClient!=nullptr;
     }
 
     static bool isSameSurface(
diff --git a/libs/gui/tests/Android.bp b/libs/gui/tests/Android.bp
index 01e90e0..7ecadf8 100644
--- a/libs/gui/tests/Android.bp
+++ b/libs/gui/tests/Android.bp
@@ -44,15 +44,19 @@
         "libgui",
         "libhidlbase",
         "libhidltransport",
+        "libinput",
         "libui",
         "libutils",
         "libnativewindow"
     ],
 }
 
-// Build a separate binary for each source file to $(TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
+// Build a separate binary to $(TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
+// This test has a main method, and requires a separate binary to be built.
+// To add move tests like this, just add additional cc_test statements,
+// as opposed to adding more source files to this one.
 cc_test {
-    name: "libgui_separate_binary_test",
+    name: "SurfaceParcelable_test",
     test_suites: ["device-tests"],
 
     clang: true,
@@ -61,7 +65,6 @@
         "-Werror",
     ],
 
-    test_per_src: true,
     srcs: [
         "SurfaceParcelable_test.cpp",
     ],
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
index 9a20859..119e888 100644
--- a/libs/gui/tests/BufferQueue_test.cpp
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -61,7 +61,7 @@
     }
 
     void GetMinUndequeuedBufferCount(int* bufferCount) {
-        ASSERT_TRUE(bufferCount != NULL);
+        ASSERT_TRUE(bufferCount != nullptr);
         ASSERT_EQ(OK, mProducer->query(NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS,
                     bufferCount));
         ASSERT_GE(*bufferCount, 0);
@@ -82,7 +82,7 @@
         sp<Fence> fence;
 
         input.deflate(&timestamp, &isAutoTimestamp, &dataSpace, &crop,
-                &scalingMode, &transform, &fence, NULL);
+                &scalingMode, &transform, &fence, nullptr);
         ASSERT_EQ(timestamp, item.mTimestamp);
         ASSERT_EQ(isAutoTimestamp, item.mIsAutoTimestamp);
         ASSERT_EQ(dataSpace, item.mDataSpace);
@@ -128,17 +128,17 @@
     sp<IBinder> binderProducer =
         serviceManager->getService(PRODUCER_NAME);
     mProducer = interface_cast<IGraphicBufferProducer>(binderProducer);
-    EXPECT_TRUE(mProducer != NULL);
+    EXPECT_TRUE(mProducer != nullptr);
     sp<IBinder> binderConsumer =
         serviceManager->getService(CONSUMER_NAME);
     mConsumer = interface_cast<IGraphicBufferConsumer>(binderConsumer);
-    EXPECT_TRUE(mConsumer != NULL);
+    EXPECT_TRUE(mConsumer != nullptr);
 
     sp<DummyConsumer> dc(new DummyConsumer);
     ASSERT_EQ(OK, mConsumer->consumerConnect(dc, false));
     IGraphicBufferProducer::QueueBufferOutput output;
     ASSERT_EQ(OK,
-            mProducer->connect(NULL, NATIVE_WINDOW_API_CPU, false, &output));
+            mProducer->connect(nullptr, NATIVE_WINDOW_API_CPU, false, &output));
 
     int slot;
     sp<Fence> fence;
@@ -353,8 +353,8 @@
     ASSERT_EQ(OK, buffer->unlock());
 
     int newSlot;
-    ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(NULL, safeToClobberBuffer));
-    ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(&newSlot, NULL));
+    ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(nullptr, safeToClobberBuffer));
+    ASSERT_EQ(BAD_VALUE, mProducer->attachBuffer(&newSlot, nullptr));
 
     ASSERT_EQ(OK, mProducer->attachBuffer(&newSlot, buffer));
     IGraphicBufferProducer::QueueBufferInput input(0, false,
@@ -412,8 +412,8 @@
 
     int newSlot;
     sp<GraphicBuffer> safeToClobberBuffer;
-    ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(NULL, safeToClobberBuffer));
-    ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(&newSlot, NULL));
+    ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(nullptr, safeToClobberBuffer));
+    ASSERT_EQ(BAD_VALUE, mConsumer->attachBuffer(&newSlot, nullptr));
     ASSERT_EQ(OK, mConsumer->attachBuffer(&newSlot, item.mGraphicBuffer));
 
     ASSERT_EQ(OK, mConsumer->releaseBuffer(newSlot, 0, EGL_NO_DISPLAY,
diff --git a/libs/gui/tests/CpuConsumer_test.cpp b/libs/gui/tests/CpuConsumer_test.cpp
index 36be7d9..00e32d9 100644
--- a/libs/gui/tests/CpuConsumer_test.cpp
+++ b/libs/gui/tests/CpuConsumer_test.cpp
@@ -484,12 +484,12 @@
     err = native_window_dequeue_buffer_and_wait(anw.get(), &anb);
     ASSERT_NO_ERROR(err, "dequeueBuffer error: ");
 
-    ASSERT_TRUE(anb != NULL);
+    ASSERT_TRUE(anb != nullptr);
 
     sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
     *stride = buf->getStride();
-    uint8_t* img = NULL;
+    uint8_t* img = nullptr;
 
     ALOGVV("Lock buffer from %p for write", anw.get());
     err = buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
@@ -554,7 +554,7 @@
     err = mCC->lockNextBuffer(&b);
     ASSERT_NO_ERROR(err, "getNextBuffer error: ");
 
-    ASSERT_TRUE(b.data != NULL);
+    ASSERT_TRUE(b.data != nullptr);
     EXPECT_EQ(params.width,  b.width);
     EXPECT_EQ(params.height, b.height);
     EXPECT_EQ(params.format, b.format);
@@ -595,7 +595,7 @@
         err = mCC->lockNextBuffer(&b);
         ASSERT_NO_ERROR(err, "getNextBuffer error: ");
 
-        ASSERT_TRUE(b.data != NULL);
+        ASSERT_TRUE(b.data != nullptr);
         EXPECT_EQ(params.width,  b.width);
         EXPECT_EQ(params.height, b.height);
         EXPECT_EQ(params.format, b.format);
@@ -637,7 +637,7 @@
         err = mCC->lockNextBuffer(&b[i]);
         ASSERT_NO_ERROR(err, "getNextBuffer error: ");
 
-        ASSERT_TRUE(b[i].data != NULL);
+        ASSERT_TRUE(b[i].data != nullptr);
         EXPECT_EQ(params.width,  b[i].width);
         EXPECT_EQ(params.height, b[i].height);
         EXPECT_EQ(params.format, b[i].format);
@@ -660,7 +660,7 @@
     err = mCC->lockNextBuffer(&bTooMuch);
     ASSERT_NO_ERROR(err, "Did not allow new lock after unlock");
 
-    ASSERT_TRUE(bTooMuch.data != NULL);
+    ASSERT_TRUE(bTooMuch.data != nullptr);
     EXPECT_EQ(params.width,  bTooMuch.width);
     EXPECT_EQ(params.height, bTooMuch.height);
     EXPECT_EQ(params.format, bTooMuch.format);
diff --git a/libs/gui/tests/FillBuffer.cpp b/libs/gui/tests/FillBuffer.cpp
index ccd674f..b60995a 100644
--- a/libs/gui/tests/FillBuffer.cpp
+++ b/libs/gui/tests/FillBuffer.cpp
@@ -93,11 +93,11 @@
     android_native_buffer_t* anb;
     ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(anw.get(),
             &anb));
-    ASSERT_TRUE(anb != NULL);
+    ASSERT_TRUE(anb != nullptr);
 
     sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
-    uint8_t* img = NULL;
+    uint8_t* img = nullptr;
     ASSERT_EQ(NO_ERROR, buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN,
             (void**)(&img)));
     fillRGBA8Buffer(img, buf->getWidth(), buf->getHeight(), buf->getStride());
diff --git a/libs/gui/tests/GLTest.cpp b/libs/gui/tests/GLTest.cpp
index a91552f..a1405fc 100644
--- a/libs/gui/tests/GLTest.cpp
+++ b/libs/gui/tests/GLTest.cpp
@@ -50,7 +50,7 @@
     ASSERT_EQ(EGL_SUCCESS, eglGetError());
 
     char* displaySecsEnv = getenv("GLTEST_DISPLAY_SECS");
-    if (displaySecsEnv != NULL) {
+    if (displaySecsEnv != nullptr) {
         mDisplaySecs = atoi(displaySecsEnv);
         if (mDisplaySecs < 0) {
             mDisplaySecs = 0;
@@ -67,7 +67,7 @@
                 String8("Test Surface"), getSurfaceWidth(), getSurfaceHeight(),
                 PIXEL_FORMAT_RGB_888, 0);
 
-        ASSERT_TRUE(mSurfaceControl != NULL);
+        ASSERT_TRUE(mSurfaceControl != nullptr);
         ASSERT_TRUE(mSurfaceControl->isValid());
 
         Transaction t;
@@ -117,7 +117,7 @@
         sleep(mDisplaySecs);
     }
 
-    if (mComposerClient != NULL) {
+    if (mComposerClient != nullptr) {
         mComposerClient->dispose();
     }
     if (mEglContext != EGL_NO_CONTEXT) {
@@ -171,7 +171,7 @@
 
 EGLSurface GLTest::createWindowSurface(EGLDisplay display, EGLConfig config,
                                        sp<ANativeWindow>& window) const {
-    return eglCreateWindowSurface(display, config, window.get(), NULL);
+    return eglCreateWindowSurface(display, config, window.get(), nullptr);
 }
 
 ::testing::AssertionResult GLTest::checkPixel(int x, int y,
@@ -256,7 +256,7 @@
     GLuint shader = glCreateShader(shaderType);
     ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());
     if (shader) {
-        glShaderSource(shader, 1, &pSource, NULL);
+        glShaderSource(shader, 1, &pSource, nullptr);
         ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());
         glCompileShader(shader);
         ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());
@@ -270,7 +270,7 @@
             if (infoLen) {
                 char* buf = (char*) malloc(infoLen);
                 if (buf) {
-                    glGetShaderInfoLog(shader, infoLen, NULL, buf);
+                    glGetShaderInfoLog(shader, infoLen, nullptr, buf);
                     printf("Shader compile log:\n%s\n", buf);
                     free(buf);
                     FAIL();
@@ -278,7 +278,7 @@
             } else {
                 char* buf = (char*) malloc(0x1000);
                 if (buf) {
-                    glGetShaderInfoLog(shader, 0x1000, NULL, buf);
+                    glGetShaderInfoLog(shader, 0x1000, nullptr, buf);
                     printf("Shader compile log:\n%s\n", buf);
                     free(buf);
                     FAIL();
@@ -322,7 +322,7 @@
             if (bufLength) {
                 char* buf = (char*) malloc(bufLength);
                 if (buf) {
-                    glGetProgramInfoLog(program, bufLength, NULL, buf);
+                    glGetProgramInfoLog(program, bufLength, nullptr, buf);
                     printf("Program link log:\n%s\n", buf);
                     free(buf);
                     FAIL();
diff --git a/libs/gui/tests/GLTest.h b/libs/gui/tests/GLTest.h
index f0d27a8..f290b3c 100644
--- a/libs/gui/tests/GLTest.h
+++ b/libs/gui/tests/GLTest.h
@@ -39,7 +39,7 @@
             mEglDisplay(EGL_NO_DISPLAY),
             mEglSurface(EGL_NO_SURFACE),
             mEglContext(EGL_NO_CONTEXT),
-            mGlConfig(NULL) {
+            mGlConfig(nullptr) {
     }
 
     virtual void SetUp();
diff --git a/libs/gui/tests/IGraphicBufferProducer_test.cpp b/libs/gui/tests/IGraphicBufferProducer_test.cpp
index a35cf11..6d03374 100644
--- a/libs/gui/tests/IGraphicBufferProducer_test.cpp
+++ b/libs/gui/tests/IGraphicBufferProducer_test.cpp
@@ -228,9 +228,9 @@
     void setupDequeueRequestBuffer(int *slot, sp<Fence> *fence,
             sp<GraphicBuffer> *buffer)
     {
-        ASSERT_TRUE(slot != NULL);
-        ASSERT_TRUE(fence != NULL);
-        ASSERT_TRUE(buffer != NULL);
+        ASSERT_TRUE(slot != nullptr);
+        ASSERT_TRUE(fence != nullptr);
+        ASSERT_TRUE(buffer != nullptr);
 
         ASSERT_NO_FATAL_FAILURE(ConnectProducer());
 
@@ -263,7 +263,7 @@
     EXPECT_EQ(BAD_VALUE, mProducer->connect(TEST_TOKEN,
                                             TEST_API,
                                             TEST_CONTROLLED_BY_APP,
-                                            /*output*/NULL));
+                                            /*output*/nullptr));
 
     // Invalid API returns bad value
     EXPECT_EQ(BAD_VALUE, mProducer->connect(TEST_TOKEN,
@@ -359,7 +359,7 @@
     // TODO: Consider documented the above enums as unsupported or make a new enum for IGBP
 
     // Value was NULL
-    EXPECT_EQ(BAD_VALUE, mProducer->query(NATIVE_WINDOW_FORMAT, /*value*/NULL));
+    EXPECT_EQ(BAD_VALUE, mProducer->query(NATIVE_WINDOW_FORMAT, /*value*/nullptr));
 
     ASSERT_OK(mConsumer->consumerDisconnect());
 
@@ -465,7 +465,7 @@
 
     // Fence was NULL
     {
-        sp<Fence> nullFence = NULL;
+        sp<Fence> nullFence = nullptr;
 
         IGraphicBufferProducer::QueueBufferInput input =
                 QueueBufferInputBuilder().setFence(nullFence).build();
@@ -695,10 +695,7 @@
     sp<Fence> fence;
     sp<GraphicBuffer> buffer;
 
-    if (GetParam() == USE_BUFFER_QUEUE_PRODUCER) {
-        // TODO(b/38137191): Implement BufferHubProducer::detachBuffer
-        ASSERT_EQ(NO_INIT, mProducer->detachNextBuffer(&buffer, &fence));
-    }
+    ASSERT_EQ(NO_INIT, mProducer->detachNextBuffer(&buffer, &fence));
 }
 
 TEST_P(IGraphicBufferProducerTest,
@@ -735,10 +732,7 @@
 
     ASSERT_OK(mProducer->disconnect(TEST_API));
 
-    if (GetParam() == USE_BUFFER_QUEUE_PRODUCER) {
-        // TODO(b/38137191): Implement BufferHubProducer::detachBuffer
-        ASSERT_EQ(NO_INIT, mProducer->detachBuffer(slot));
-    }
+    ASSERT_EQ(NO_INIT, mProducer->detachBuffer(slot));
 }
 
 TEST_P(IGraphicBufferProducerTest,
@@ -778,18 +772,46 @@
     sp<GraphicBuffer> buffer;
 
     setupDequeueRequestBuffer(&slot, &fence, &buffer);
+    ASSERT_TRUE(buffer != nullptr);
 
-    if (GetParam() == USE_BUFFER_QUEUE_PRODUCER) {
-        // TODO(b/38137191): Implement BufferHubProducer::detachBuffer
-        ASSERT_OK(mProducer->detachBuffer(slot));
+    ASSERT_OK(mProducer->detachBuffer(slot));
+    EXPECT_OK(buffer->initCheck());
+
+    if (GetParam() == USE_BUFFER_HUB_PRODUCER) {
+        // For a GraphicBuffer backed by BufferHub, once detached from an IGBP, it should have
+        // isDetachedBuffer() set. Note that this only applies to BufferHub.
+        EXPECT_TRUE(buffer->isDetachedBuffer());
+    } else {
+        EXPECT_FALSE(buffer->isDetachedBuffer());
     }
 
     ASSERT_OK(mProducer->disconnect(TEST_API));
 
-    if (GetParam() == USE_BUFFER_QUEUE_PRODUCER) {
-        // TODO(b/69981968): Implement BufferHubProducer::attachBuffer
-        ASSERT_EQ(NO_INIT, mProducer->attachBuffer(&slot, buffer));
+    ASSERT_EQ(NO_INIT, mProducer->attachBuffer(&slot, buffer));
+}
+
+TEST_P(IGraphicBufferProducerTest, DetachThenAttach_Succeeds) {
+    int slot = -1;
+    sp<Fence> fence;
+    sp<GraphicBuffer> buffer;
+
+    setupDequeueRequestBuffer(&slot, &fence, &buffer);
+    ASSERT_TRUE(buffer != nullptr);
+
+    ASSERT_OK(mProducer->detachBuffer(slot));
+    EXPECT_OK(buffer->initCheck());
+
+    if (GetParam() == USE_BUFFER_HUB_PRODUCER) {
+        // For a GraphicBuffer backed by BufferHub, once detached from an IGBP, it should have
+        // isDetachedBuffer() set. Note that this only applies to BufferHub.
+        EXPECT_TRUE(buffer->isDetachedBuffer());
+    } else {
+        EXPECT_FALSE(buffer->isDetachedBuffer());
     }
+
+    EXPECT_OK(mProducer->attachBuffer(&slot, buffer));
+    EXPECT_FALSE(buffer->isDetachedBuffer());
+    EXPECT_OK(buffer->initCheck());
 }
 
 #if USE_BUFFER_HUB_AS_BUFFER_QUEUE
diff --git a/libs/gui/tests/MultiTextureConsumer_test.cpp b/libs/gui/tests/MultiTextureConsumer_test.cpp
index 3a25ac5..7d3d4aa 100644
--- a/libs/gui/tests/MultiTextureConsumer_test.cpp
+++ b/libs/gui/tests/MultiTextureConsumer_test.cpp
@@ -47,7 +47,7 @@
         GLTest::TearDown();
     }
     virtual EGLint const* getContextAttribs() {
-        return NULL;
+        return nullptr;
     }
     virtual EGLint const* getConfigAttribs() {
         static EGLint sDefaultConfigAttribs[] = {
@@ -105,7 +105,7 @@
 
     glClear(GL_COLOR_BUFFER_BIT);
     for (int i=0 ; i<8 ; i++) {
-        mSurface->lock(&buffer, NULL);
+        mSurface->lock(&buffer, nullptr);
         memset(buffer.bits, (i&7) * 0x20, buffer.stride * buffer.height * 4);
         mSurface->unlockAndPost();
 
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index d5b2f00..65e09f2 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -29,7 +29,6 @@
 #include <utils/Thread.h>
 
 extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
-#define CROP_EXT_STR "EGL_ANDROID_image_crop"
 
 namespace android {
 
@@ -39,7 +38,7 @@
             mEglDisplay(EGL_NO_DISPLAY),
             mEglSurface(EGL_NO_SURFACE),
             mEglContext(EGL_NO_CONTEXT),
-            mEglConfig(NULL) {
+            mEglConfig(nullptr) {
     }
 
     virtual void SetUp() {
@@ -82,7 +81,7 @@
         ASSERT_EQ(EGL_SUCCESS, eglGetError());
         ASSERT_NE(EGL_NO_SURFACE, mEglSurface);
 
-        mEglContext = eglCreateContext(mEglDisplay, myConfig, EGL_NO_CONTEXT, 0);
+        mEglContext = eglCreateContext(mEglDisplay, myConfig, EGL_NO_CONTEXT, nullptr);
         ASSERT_EQ(EGL_SUCCESS, eglGetError());
         ASSERT_NE(EGL_NO_CONTEXT, mEglContext);
 
@@ -127,7 +126,7 @@
 
 TEST_F(SurfaceTextureClientTest, GetISurfaceTextureIsNotNull) {
     sp<IGraphicBufferProducer> ist(mSTC->getIGraphicBufferProducer());
-    ASSERT_TRUE(ist != NULL);
+    ASSERT_TRUE(ist != nullptr);
 }
 
 TEST_F(SurfaceTextureClientTest, QueuesToWindowCompositorIsFalse) {
@@ -155,7 +154,7 @@
     EXPECT_TRUE(eglInitialize(dpy, &majorVersion, &minorVersion));
     ASSERT_EQ(EGL_SUCCESS, eglGetError());
 
-    EGLConfig myConfig = {0};
+    EGLConfig myConfig = {nullptr};
     EGLint numConfigs = 0;
     EGLint configAttribs[] = {
         EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
@@ -172,7 +171,7 @@
     ASSERT_EQ(EGL_SUCCESS, eglGetError());
 
     EGLSurface eglSurface = eglCreateWindowSurface(dpy, myConfig, mANW.get(),
-            NULL);
+            nullptr);
     EXPECT_NE(EGL_NO_SURFACE, eglSurface);
     EXPECT_EQ(EGL_SUCCESS, eglGetError());
 
@@ -185,7 +184,7 @@
 
 TEST_F(SurfaceTextureClientTest, EglSwapBuffersAbandonErrorIsEglBadSurface) {
 
-    EGLSurface eglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig, mANW.get(), NULL);
+    EGLSurface eglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig, mANW.get(), nullptr);
     EXPECT_NE(EGL_NO_SURFACE, eglSurface);
     EXPECT_EQ(EGL_SUCCESS, eglGetError());
 
@@ -638,18 +637,6 @@
 }
 
 TEST_F(SurfaceTextureClientTest, GetTransformMatrixSucceedsAfterFreeingBuffersWithCrop) {
-    // Query to see if the image crop extension exists
-    EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-    const char* exts = eglQueryStringImplementationANDROID(dpy, EGL_EXTENSIONS);
-    size_t cropExtLen = strlen(CROP_EXT_STR);
-    size_t extsLen = strlen(exts);
-    bool equal = !strcmp(CROP_EXT_STR, exts);
-    bool atStart = !strncmp(CROP_EXT_STR " ", exts, cropExtLen+1);
-    bool atEnd = (cropExtLen+1) < extsLen &&
-            !strcmp(" " CROP_EXT_STR, exts + extsLen - (cropExtLen+1));
-    bool inMiddle = strstr(exts, " " CROP_EXT_STR " ");
-    bool hasEglAndroidImageCrop = equal || atStart || atEnd || inMiddle;
-
     android_native_buffer_t* buf[3];
     float mtx[16] = {};
     android_native_rect_t crop;
@@ -669,17 +656,15 @@
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 6)); // frees buffers
     mST->getTransformMatrix(mtx);
 
-    // If the egl image crop extension is not present, this accounts for the
-    // .5 texel shrink for each edge that's included in the transform matrix
-    // to avoid texturing outside the crop region. Otherwise the crop is not
-    // included in the transform matrix.
-    EXPECT_EQ(hasEglAndroidImageCrop ? 1 : 0.5, mtx[0]);
+    // This accounts for the .5 texel shrink for each edge that's included in
+    // the transform matrix to avoid texturing outside the crop region.
+    EXPECT_EQ(0.5f, mtx[0]);
     EXPECT_EQ(0.f, mtx[1]);
     EXPECT_EQ(0.f, mtx[2]);
     EXPECT_EQ(0.f, mtx[3]);
 
     EXPECT_EQ(0.f, mtx[4]);
-    EXPECT_EQ(hasEglAndroidImageCrop ? -1 : -0.5, mtx[5]);
+    EXPECT_EQ(-0.5f, mtx[5]);
     EXPECT_EQ(0.f, mtx[6]);
     EXPECT_EQ(0.f, mtx[7]);
 
@@ -688,8 +673,8 @@
     EXPECT_EQ(1.f, mtx[10]);
     EXPECT_EQ(0.f, mtx[11]);
 
-    EXPECT_EQ(hasEglAndroidImageCrop ? 0 : 0.0625f, mtx[12]);
-    EXPECT_EQ(hasEglAndroidImageCrop ? 1 : 0.5625f, mtx[13]);
+    EXPECT_EQ(0.0625f, mtx[12]);
+    EXPECT_EQ(0.5625f, mtx[13]);
     EXPECT_EQ(0.f, mtx[14]);
     EXPECT_EQ(1.f, mtx[15]);
 }
@@ -753,7 +738,7 @@
         ASSERT_EQ(EGL_SUCCESS, eglGetError());
 
         mEglContext = eglCreateContext(mEglDisplay, myConfig, EGL_NO_CONTEXT,
-                0);
+                nullptr);
         ASSERT_EQ(EGL_SUCCESS, eglGetError());
         ASSERT_NE(EGL_NO_CONTEXT, mEglContext);
 
@@ -765,7 +750,7 @@
                     GLConsumer::TEXTURE_EXTERNAL, true, false));
             sp<Surface> stc(new Surface(producer));
             mEglSurfaces[i] = eglCreateWindowSurface(mEglDisplay, myConfig,
-                    static_cast<ANativeWindow*>(stc.get()), NULL);
+                    static_cast<ANativeWindow*>(stc.get()), nullptr);
             ASSERT_EQ(EGL_SUCCESS, eglGetError());
             ASSERT_NE(EGL_NO_SURFACE, mEglSurfaces[i]);
         }
diff --git a/libs/gui/tests/SurfaceTextureFBO.h b/libs/gui/tests/SurfaceTextureFBO.h
index 7f1ae84..70f988d 100644
--- a/libs/gui/tests/SurfaceTextureFBO.h
+++ b/libs/gui/tests/SurfaceTextureFBO.h
@@ -34,7 +34,7 @@
         glGenTextures(1, &mFboTex);
         glBindTexture(GL_TEXTURE_2D, mFboTex);
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, getSurfaceWidth(),
-                getSurfaceHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+                getSurfaceHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
         glBindTexture(GL_TEXTURE_2D, 0);
         ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());
 
diff --git a/libs/gui/tests/SurfaceTextureFBO_test.cpp b/libs/gui/tests/SurfaceTextureFBO_test.cpp
index 0134273..f34561f 100644
--- a/libs/gui/tests/SurfaceTextureFBO_test.cpp
+++ b/libs/gui/tests/SurfaceTextureFBO_test.cpp
@@ -39,12 +39,12 @@
     android_native_buffer_t* anb;
     ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
             &anb));
-    ASSERT_TRUE(anb != NULL);
+    ASSERT_TRUE(anb != nullptr);
 
     sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
     // Fill the buffer with green
-    uint8_t* img = NULL;
+    uint8_t* img = nullptr;
     buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
     fillRGBA8BufferSolid(img, texWidth, texHeight, buf->getStride(), 0, 255,
             0, 255);
@@ -63,7 +63,7 @@
 
         ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
                 &anb));
-        ASSERT_TRUE(anb != NULL);
+        ASSERT_TRUE(anb != nullptr);
 
         buf = GraphicBuffer::from(anb);
 
diff --git a/libs/gui/tests/SurfaceTextureGLThreadToGL.h b/libs/gui/tests/SurfaceTextureGLThreadToGL.h
index 2ce20eb..03975b1 100644
--- a/libs/gui/tests/SurfaceTextureGLThreadToGL.h
+++ b/libs/gui/tests/SurfaceTextureGLThreadToGL.h
@@ -158,7 +158,7 @@
     }
 
     virtual void TearDown() {
-        if (mProducerThread != NULL) {
+        if (mProducerThread != nullptr) {
             mProducerThread->requestExitAndWait();
         }
         mProducerThread.clear();
@@ -167,7 +167,7 @@
     }
 
     void runProducerThread(const sp<ProducerThread> producerThread) {
-        ASSERT_TRUE(mProducerThread == NULL);
+        ASSERT_TRUE(mProducerThread == nullptr);
         mProducerThread = producerThread;
         producerThread->setEglObjects(mEglDisplay, mProducerEglSurface,
                 mProducerEglContext);
diff --git a/libs/gui/tests/SurfaceTextureGLToGL.h b/libs/gui/tests/SurfaceTextureGLToGL.h
index 5d43a48..3a87c12 100644
--- a/libs/gui/tests/SurfaceTextureGLToGL.h
+++ b/libs/gui/tests/SurfaceTextureGLToGL.h
@@ -38,7 +38,7 @@
 
     void SetUpWindowAndContext() {
         mProducerEglSurface = eglCreateWindowSurface(mEglDisplay, mGlConfig,
-                mANW.get(), NULL);
+                mANW.get(), nullptr);
         ASSERT_EQ(EGL_SUCCESS, eglGetError());
         ASSERT_NE(EGL_NO_SURFACE, mProducerEglSurface);
 
diff --git a/libs/gui/tests/SurfaceTextureGL_test.cpp b/libs/gui/tests/SurfaceTextureGL_test.cpp
index 5639286..e2b4f3d 100644
--- a/libs/gui/tests/SurfaceTextureGL_test.cpp
+++ b/libs/gui/tests/SurfaceTextureGL_test.cpp
@@ -40,12 +40,12 @@
     ANativeWindowBuffer* anb;
     ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
             &anb));
-    ASSERT_TRUE(anb != NULL);
+    ASSERT_TRUE(anb != nullptr);
 
     sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
     // Fill the buffer with the a checkerboard pattern
-    uint8_t* img = NULL;
+    uint8_t* img = nullptr;
     buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
     fillYV12Buffer(img, texWidth, texHeight, buf->getStride());
     buf->unlock();
@@ -90,12 +90,12 @@
     ANativeWindowBuffer* anb;
     ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
             &anb));
-    ASSERT_TRUE(anb != NULL);
+    ASSERT_TRUE(anb != nullptr);
 
     sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
     // Fill the buffer with the a checkerboard pattern
-    uint8_t* img = NULL;
+    uint8_t* img = nullptr;
     buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
     fillYV12Buffer(img, texWidth, texHeight, buf->getStride());
     buf->unlock();
@@ -155,11 +155,11 @@
         ANativeWindowBuffer* anb;
         ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
                 &anb));
-        ASSERT_TRUE(anb != NULL);
+        ASSERT_TRUE(anb != nullptr);
 
         sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
-        uint8_t* img = NULL;
+        uint8_t* img = nullptr;
         buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
         fillYV12BufferRect(img, texWidth, texHeight, buf->getStride(), crop);
         buf->unlock();
@@ -234,7 +234,7 @@
                         &anb) != NO_ERROR) {
                     return false;
                 }
-                if (anb == NULL) {
+                if (anb == nullptr) {
                     return false;
                 }
 
@@ -248,7 +248,7 @@
                 int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * texHeight/2;
                 int yuvTexStrideU = yuvTexStrideV;
 
-                uint8_t* img = NULL;
+                uint8_t* img = nullptr;
                 buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
 
                 // Gray out all the test pixels first, so we're more likely to
@@ -457,7 +457,7 @@
                         &anb) != NO_ERROR) {
                     return false;
                 }
-                if (anb == NULL) {
+                if (anb == nullptr) {
                     return false;
                 }
                 if (mANW->queueBuffer(mANW.get(), anb, -1)
@@ -641,7 +641,7 @@
                     &anb) != NO_ERROR) {
                 return false;
             }
-            if (anb == NULL) {
+            if (anb == nullptr) {
                 return false;
             }
             if (mANW->queueBuffer(mANW.get(), anb, -1)
@@ -654,7 +654,7 @@
                     &anb) != NO_ERROR) {
                 return false;
             }
-            if (anb == NULL) {
+            if (anb == nullptr) {
                 return false;
             }
             if (mANW->queueBuffer(mANW.get(), anb, -1)
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 6e196bf..bc80899 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -72,7 +72,7 @@
         mSurfaceControl = mComposerClient->createSurface(
                 String8("Test Surface"), 32, 32, PIXEL_FORMAT_RGBA_8888, 0);
 
-        ASSERT_TRUE(mSurfaceControl != NULL);
+        ASSERT_TRUE(mSurfaceControl != nullptr);
         ASSERT_TRUE(mSurfaceControl->isValid());
 
         Transaction t;
@@ -81,7 +81,7 @@
                 .apply());
 
         mSurface = mSurfaceControl->getSurface();
-        ASSERT_TRUE(mSurface != NULL);
+        ASSERT_TRUE(mSurface != nullptr);
     }
 
     virtual void TearDown() {
@@ -135,7 +135,7 @@
             ISurfaceComposer::eDisplayIdMain));
     sp<GraphicBuffer> outBuffer;
     ASSERT_EQ(NO_ERROR, sf->captureScreen(display, &outBuffer, Rect(),
-            64, 64, 0, 0x7fffffff, false));
+            64, 64, false));
 
     ASSERT_EQ(NO_ERROR, native_window_api_connect(anw.get(),
             NATIVE_WINDOW_API_CPU));
@@ -145,7 +145,7 @@
     ASSERT_EQ(NO_ERROR, native_window_set_usage(anw.get(),
             GRALLOC_USAGE_PROTECTED));
     ASSERT_EQ(NO_ERROR, native_window_set_buffer_count(anw.get(), 3));
-    ANativeWindowBuffer* buf = 0;
+    ANativeWindowBuffer* buf = nullptr;
 
     status_t err = native_window_dequeue_buffer_and_wait(anw.get(), &buf);
     if (err) {
@@ -166,7 +166,7 @@
         ASSERT_EQ(NO_ERROR, anw->queueBuffer(anw.get(), buf, -1));
     }
     ASSERT_EQ(NO_ERROR, sf->captureScreen(display, &outBuffer, Rect(),
-            64, 64, 0, 0x7fffffff, false));
+            64, 64, false));
 }
 
 TEST_F(SurfaceTest, ConcreteTypeIsSurface) {
@@ -581,9 +581,6 @@
             Vector<DisplayInfo>* /*configs*/) override { return NO_ERROR; }
     status_t getDisplayStats(const sp<IBinder>& /*display*/,
             DisplayStatInfo* /*stats*/) override { return NO_ERROR; }
-    status_t getDisplayViewport(const sp<IBinder>& /*display*/, Rect* /*outViewport*/) override {
-        return NO_ERROR;
-    }
     int getActiveConfig(const sp<IBinder>& /*display*/) override { return 0; }
     status_t setActiveConfig(const sp<IBinder>& /*display*/, int /*id*/)
             override {
@@ -602,7 +599,6 @@
     status_t captureScreen(const sp<IBinder>& /*display*/,
             sp<GraphicBuffer>* /*outBuffer*/,
             Rect /*sourceCrop*/, uint32_t /*reqWidth*/, uint32_t /*reqHeight*/,
-            int32_t /*minLayerZ*/, int32_t /*maxLayerZ*/,
             bool /*useIdentityTransform*/,
             Rotation /*rotation*/) override { return NO_ERROR; }
     virtual status_t captureLayers(const sp<IBinder>& /*parentHandle*/,
@@ -625,6 +621,10 @@
     status_t getLayerDebugInfo(std::vector<LayerDebugInfo>* /*layers*/) const override {
         return NO_ERROR;
     }
+    status_t getCompositionPreference(ui::Dataspace* /*outDataSpace*/,
+                                      ui::PixelFormat* /*outPixelFormat*/) const override {
+        return NO_ERROR;
+    }
 
 protected:
     IBinder* onAsBinder() override { return nullptr; }
diff --git a/libs/input/Android.bp b/libs/input/Android.bp
index a2d6a8a..72558a6 100644
--- a/libs/input/Android.bp
+++ b/libs/input/Android.bp
@@ -47,11 +47,14 @@
                 "InputTransport.cpp",
                 "VelocityControl.cpp",
                 "VelocityTracker.cpp",
+                "InputApplication.cpp",
+                "InputWindow.cpp"
             ],
 
             shared_libs: [
                 "libutils",
                 "libbinder",
+                "libui"
             ],
 
             sanitize: {
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index a624663..8a15e2f 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -31,14 +31,16 @@
 
 // --- InputEvent ---
 
-void InputEvent::initialize(int32_t deviceId, int32_t source) {
+void InputEvent::initialize(int32_t deviceId, int32_t source, int32_t displayId) {
     mDeviceId = deviceId;
     mSource = source;
+    mDisplayId = displayId;
 }
 
 void InputEvent::initialize(const InputEvent& from) {
     mDeviceId = from.mDeviceId;
     mSource = from.mSource;
+    mDisplayId = from.mDisplayId;
 }
 
 // --- KeyEvent ---
@@ -54,6 +56,7 @@
 void KeyEvent::initialize(
         int32_t deviceId,
         int32_t source,
+        int32_t displayId,
         int32_t action,
         int32_t flags,
         int32_t keyCode,
@@ -62,7 +65,7 @@
         int32_t repeatCount,
         nsecs_t downTime,
         nsecs_t eventTime) {
-    InputEvent::initialize(deviceId, source);
+    InputEvent::initialize(deviceId, source, displayId);
     mAction = action;
     mFlags = flags;
     mKeyCode = keyCode;
@@ -215,6 +218,7 @@
 void MotionEvent::initialize(
         int32_t deviceId,
         int32_t source,
+        int32_t displayId,
         int32_t action,
         int32_t actionButton,
         int32_t flags,
@@ -230,7 +234,7 @@
         size_t pointerCount,
         const PointerProperties* pointerProperties,
         const PointerCoords* pointerCoords) {
-    InputEvent::initialize(deviceId, source);
+    InputEvent::initialize(deviceId, source, displayId);
     mAction = action;
     mActionButton = actionButton;
     mFlags = flags;
@@ -250,7 +254,7 @@
 }
 
 void MotionEvent::copyFrom(const MotionEvent* other, bool keepHistory) {
-    InputEvent::initialize(other->mDeviceId, other->mSource);
+    InputEvent::initialize(other->mDeviceId, other->mSource, other->mDisplayId);
     mAction = other->mAction;
     mActionButton = other->mActionButton;
     mFlags = other->mFlags;
@@ -431,6 +435,7 @@
 
     mDeviceId = parcel->readInt32();
     mSource = parcel->readInt32();
+    mDisplayId = parcel->readInt32();
     mAction = parcel->readInt32();
     mActionButton = parcel->readInt32();
     mFlags = parcel->readInt32();
@@ -480,6 +485,7 @@
 
     parcel->writeInt32(mDeviceId);
     parcel->writeInt32(mSource);
+    parcel->writeInt32(mDisplayId);
     parcel->writeInt32(mAction);
     parcel->writeInt32(mActionButton);
     parcel->writeInt32(mFlags);
diff --git a/services/inputflinger/InputApplication.cpp b/libs/input/InputApplication.cpp
similarity index 91%
rename from services/inputflinger/InputApplication.cpp
rename to libs/input/InputApplication.cpp
index 9e90631..a0d1668 100644
--- a/services/inputflinger/InputApplication.cpp
+++ b/libs/input/InputApplication.cpp
@@ -16,7 +16,7 @@
 
 #define LOG_TAG "InputApplication"
 
-#include "InputApplication.h"
+#include <input/InputApplication.h>
 
 #include <android/log.h>
 
@@ -25,7 +25,7 @@
 // --- InputApplicationHandle ---
 
 InputApplicationHandle::InputApplicationHandle() :
-    mInfo(NULL) {
+    mInfo(nullptr) {
 }
 
 InputApplicationHandle::~InputApplicationHandle() {
@@ -35,7 +35,7 @@
 void InputApplicationHandle::releaseInfo() {
     if (mInfo) {
         delete mInfo;
-        mInfo = NULL;
+        mInfo = nullptr;
     }
 }
 
diff --git a/libs/input/InputDevice.cpp b/libs/input/InputDevice.cpp
index 4287abe..778c453 100644
--- a/libs/input/InputDevice.cpp
+++ b/libs/input/InputDevice.cpp
@@ -20,9 +20,12 @@
 #include <unistd.h>
 #include <ctype.h>
 
+#include <android-base/stringprintf.h>
 #include <input/InputDevice.h>
 #include <input/InputEventLabels.h>
 
+using android::base::StringPrintf;
+
 namespace android {
 
 static const char* CONFIGURATION_FILE_DIR[] = {
@@ -41,8 +44,8 @@
     return isascii(ch) && (isdigit(ch) || isalpha(ch) || ch == '-' || ch == '_');
 }
 
-static void appendInputDeviceConfigurationFileRelativePath(String8& path,
-        const String8& name, InputDeviceConfigurationFileType type) {
+static void appendInputDeviceConfigurationFileRelativePath(std::string& path,
+        const std::string& name, InputDeviceConfigurationFileType type) {
     path.append(CONFIGURATION_FILE_DIR[type]);
     for (size_t i = 0; i < name.length(); i++) {
         char ch = name[i];
@@ -54,28 +57,28 @@
     path.append(CONFIGURATION_FILE_EXTENSION[type]);
 }
 
-String8 getInputDeviceConfigurationFilePathByDeviceIdentifier(
+std::string getInputDeviceConfigurationFilePathByDeviceIdentifier(
         const InputDeviceIdentifier& deviceIdentifier,
         InputDeviceConfigurationFileType type) {
     if (deviceIdentifier.vendor !=0 && deviceIdentifier.product != 0) {
         if (deviceIdentifier.version != 0) {
             // Try vendor product version.
-            String8 versionPath(getInputDeviceConfigurationFilePathByName(
-                    String8::format("Vendor_%04x_Product_%04x_Version_%04x",
+            std::string versionPath = getInputDeviceConfigurationFilePathByName(
+                    StringPrintf("Vendor_%04x_Product_%04x_Version_%04x",
                             deviceIdentifier.vendor, deviceIdentifier.product,
                             deviceIdentifier.version),
-                    type));
-            if (!versionPath.isEmpty()) {
+                    type);
+            if (!versionPath.empty()) {
                 return versionPath;
             }
         }
 
         // Try vendor product.
-        String8 productPath(getInputDeviceConfigurationFilePathByName(
-                String8::format("Vendor_%04x_Product_%04x",
+        std::string productPath = getInputDeviceConfigurationFilePathByName(
+                StringPrintf("Vendor_%04x_Product_%04x",
                         deviceIdentifier.vendor, deviceIdentifier.product),
-                type));
-        if (!productPath.isEmpty()) {
+                type);
+        if (!productPath.empty()) {
             return productPath;
         }
     }
@@ -84,22 +87,25 @@
     return getInputDeviceConfigurationFilePathByName(deviceIdentifier.name, type);
 }
 
-String8 getInputDeviceConfigurationFilePathByName(
-        const String8& name, InputDeviceConfigurationFileType type) {
+std::string getInputDeviceConfigurationFilePathByName(
+        const std::string& name, InputDeviceConfigurationFileType type) {
     // Search system repository.
-    String8 path;
+    std::string path;
 
     // Treblized input device config files will be located /odm/usr or /vendor/usr.
     const char *rootsForPartition[] {"/odm", "/vendor", getenv("ANDROID_ROOT")};
     for (size_t i = 0; i < size(rootsForPartition); i++) {
-        path.setTo(rootsForPartition[i]);
-        path.append("/usr/");
+        if (rootsForPartition[i] == nullptr) {
+            continue;
+        }
+        path = rootsForPartition[i];
+        path += "/usr/";
         appendInputDeviceConfigurationFileRelativePath(path, name, type);
 #if DEBUG_PROBE
         ALOGD("Probing for system provided input device configuration file: path='%s'",
-              path.string());
+              path.c_str());
 #endif
-        if (!access(path.string(), R_OK)) {
+        if (!access(path.c_str(), R_OK)) {
 #if DEBUG_PROBE
             ALOGD("Found");
 #endif
@@ -109,13 +115,17 @@
 
     // Search user repository.
     // TODO Should only look here if not in safe mode.
-    path.setTo(getenv("ANDROID_DATA"));
-    path.append("/system/devices/");
+    path = "";
+    char *androidData = getenv("ANDROID_DATA");
+    if (androidData != nullptr) {
+        path += androidData;
+    }
+    path += "/system/devices/";
     appendInputDeviceConfigurationFileRelativePath(path, name, type);
 #if DEBUG_PROBE
-    ALOGD("Probing for system user input device configuration file: path='%s'", path.string());
+    ALOGD("Probing for system user input device configuration file: path='%s'", path.c_str());
 #endif
-    if (!access(path.string(), R_OK)) {
+    if (!access(path.c_str(), R_OK)) {
 #if DEBUG_PROBE
         ALOGD("Found");
 #endif
@@ -125,16 +135,16 @@
     // Not found.
 #if DEBUG_PROBE
     ALOGD("Probe failed to find input device configuration file: name='%s', type=%d",
-            name.string(), type);
+            name.c_str(), type);
 #endif
-    return String8();
+    return "";
 }
 
 
 // --- InputDeviceInfo ---
 
 InputDeviceInfo::InputDeviceInfo() {
-    initialize(-1, 0, -1, InputDeviceIdentifier(), String8(), false, false);
+    initialize(-1, 0, -1, InputDeviceIdentifier(), "", false, false);
 }
 
 InputDeviceInfo::InputDeviceInfo(const InputDeviceInfo& other) :
@@ -150,7 +160,7 @@
 }
 
 void InputDeviceInfo::initialize(int32_t id, int32_t generation, int32_t controllerNumber,
-        const InputDeviceIdentifier& identifier, const String8& alias, bool isExternal,
+        const InputDeviceIdentifier& identifier, const std::string& alias, bool isExternal,
         bool hasMic) {
     mId = id;
     mGeneration = generation;
@@ -175,7 +185,7 @@
             return &range;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 void InputDeviceInfo::addSource(uint32_t source) {
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp
index aa0bf17..32444f9 100644
--- a/libs/input/InputTransport.cpp
+++ b/libs/input/InputTransport.cpp
@@ -30,6 +30,7 @@
 #include <cutils/properties.h>
 #include <log/log.h>
 
+#include <binder/Parcel.h>
 #include <input/InputTransport.h>
 
 namespace android {
@@ -100,15 +101,13 @@
 // --- InputChannel ---
 
 InputChannel::InputChannel(const std::string& name, int fd) :
-        mName(name), mFd(fd) {
+        mName(name) {
 #if DEBUG_CHANNEL_LIFECYCLE
     ALOGD("Input channel constructed: name='%s', fd=%d",
             mName.c_str(), fd);
 #endif
 
-    int result = fcntl(mFd, F_SETFL, O_NONBLOCK);
-    LOG_ALWAYS_FATAL_IF(result != 0, "channel '%s' ~ Could not make socket "
-            "non-blocking.  errno=%d", mName.c_str(), errno);
+    setFd(fd);
 }
 
 InputChannel::~InputChannel() {
@@ -120,6 +119,18 @@
     ::close(mFd);
 }
 
+void InputChannel::setFd(int fd) {
+    if (mFd > 0) {
+        ::close(mFd);
+    }
+    mFd = fd;
+    if (mFd > 0) {
+        int result = fcntl(mFd, F_SETFL, O_NONBLOCK);
+        LOG_ALWAYS_FATAL_IF(result != 0, "channel '%s' ~ Could not make socket "
+            "non-blocking.  errno=%d", mName.c_str(), errno);
+    }
+}
+
 status_t InputChannel::openInputChannelPair(const std::string& name,
         sp<InputChannel>& outServerChannel, sp<InputChannel>& outClientChannel) {
     int sockets[2];
@@ -226,10 +237,35 @@
 
 sp<InputChannel> InputChannel::dup() const {
     int fd = ::dup(getFd());
-    return fd >= 0 ? new InputChannel(getName(), fd) : NULL;
+    return fd >= 0 ? new InputChannel(getName(), fd) : nullptr;
 }
 
 
+status_t InputChannel::write(Parcel& out) const {
+    status_t s = out.writeString8(String8(getName().c_str()));
+
+    if (s != OK) {
+        return s;
+    }
+
+    s = out.writeDupFileDescriptor(getFd());
+
+    return s;
+}
+
+status_t InputChannel::read(const Parcel& from) {
+    mName = from.readString8();
+
+    int rawFd = from.readFileDescriptor();
+    setFd(::dup(rawFd));
+
+    if (mFd < 0) {
+        return BAD_VALUE;
+    }
+
+    return OK;
+}
+
 // --- InputPublisher ---
 
 InputPublisher::InputPublisher(const sp<InputChannel>& channel) :
@@ -243,6 +279,7 @@
         uint32_t seq,
         int32_t deviceId,
         int32_t source,
+        int32_t displayId,
         int32_t action,
         int32_t flags,
         int32_t keyCode,
@@ -270,6 +307,7 @@
     msg.body.key.seq = seq;
     msg.body.key.deviceId = deviceId;
     msg.body.key.source = source;
+    msg.body.key.displayId = displayId;
     msg.body.key.action = action;
     msg.body.key.flags = flags;
     msg.body.key.keyCode = keyCode;
@@ -303,13 +341,15 @@
         const PointerCoords* pointerCoords) {
 #if DEBUG_TRANSPORT_ACTIONS
     ALOGD("channel '%s' publisher ~ publishMotionEvent: seq=%u, deviceId=%d, source=0x%x, "
+            "displayId=%" PRId32 ", "
             "action=0x%x, actionButton=0x%08x, flags=0x%x, edgeFlags=0x%x, "
             "metaState=0x%x, buttonState=0x%x, xOffset=%f, yOffset=%f, "
             "xPrecision=%f, yPrecision=%f, downTime=%" PRId64 ", eventTime=%" PRId64 ", "
             "pointerCount=%" PRIu32,
             mChannel->getName().c_str(), seq,
-            deviceId, source, action, actionButton, flags, edgeFlags, metaState, buttonState,
-            xOffset, yOffset, xPrecision, yPrecision, downTime, eventTime, pointerCount);
+            deviceId, source, displayId, action, actionButton, flags, edgeFlags, metaState,
+            buttonState, xOffset, yOffset, xPrecision, yPrecision, downTime, eventTime,
+            pointerCount);
 #endif
 
     if (!seq) {
@@ -384,7 +424,7 @@
 
 bool InputConsumer::isTouchResamplingEnabled() {
     char value[PROPERTY_VALUE_MAX];
-    int length = property_get("ro.input.noresample", value, NULL);
+    int length = property_get("ro.input.noresample", value, nullptr);
     if (length > 0) {
         if (!strcmp("1", value)) {
             return false;
@@ -398,16 +438,14 @@
 }
 
 status_t InputConsumer::consume(InputEventFactoryInterface* factory,
-        bool consumeBatches, nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent,
-        int32_t* displayId) {
+        bool consumeBatches, nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) {
 #if DEBUG_TRANSPORT_ACTIONS
     ALOGD("channel '%s' consumer ~ consume: consumeBatches=%s, frameTime=%" PRId64,
             mChannel->getName().c_str(), consumeBatches ? "true" : "false", frameTime);
 #endif
 
     *outSeq = 0;
-    *outEvent = NULL;
-    *displayId = -1;  // Invalid display.
+    *outEvent = nullptr;
 
     // Fetch the next input message.
     // Loop until an event can be returned or no additional events are received.
@@ -422,7 +460,7 @@
             if (result) {
                 // Consume the next batched event unless batches are being held for later.
                 if (consumeBatches || result != WOULD_BLOCK) {
-                    result = consumeBatch(factory, frameTime, outSeq, outEvent, displayId);
+                    result = consumeBatch(factory, frameTime, outSeq, outEvent);
                     if (*outEvent) {
 #if DEBUG_TRANSPORT_ACTIONS
                         ALOGD("channel '%s' consumer ~ consumed batch event, seq=%u",
@@ -466,7 +504,7 @@
                     // the previous batch right now and defer the new message until later.
                     mMsgDeferred = true;
                     status_t result = consumeSamples(factory,
-                            batch, batch.samples.size(), outSeq, outEvent, displayId);
+                            batch, batch.samples.size(), outSeq, outEvent);
                     mBatches.removeAt(batchIndex);
                     if (result) {
                         return result;
@@ -500,7 +538,7 @@
             initializeMotionEvent(motionEvent, &mMsg);
             *outSeq = mMsg.body.motion.seq;
             *outEvent = motionEvent;
-            *displayId = mMsg.body.motion.displayId;
+
 #if DEBUG_TRANSPORT_ACTIONS
             ALOGD("channel '%s' consumer ~ consumed motion event, seq=%u",
                     mChannel->getName().c_str(), *outSeq);
@@ -518,14 +556,13 @@
 }
 
 status_t InputConsumer::consumeBatch(InputEventFactoryInterface* factory,
-        nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent, int32_t* displayId) {
+        nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) {
     status_t result;
     for (size_t i = mBatches.size(); i > 0; ) {
         i--;
         Batch& batch = mBatches.editItemAt(i);
         if (frameTime < 0) {
-            result = consumeSamples(factory, batch, batch.samples.size(),
-                    outSeq, outEvent, displayId);
+            result = consumeSamples(factory, batch, batch.samples.size(), outSeq, outEvent);
             mBatches.removeAt(i);
             return result;
         }
@@ -539,11 +576,11 @@
             continue;
         }
 
-        result = consumeSamples(factory, batch, split + 1, outSeq, outEvent, displayId);
+        result = consumeSamples(factory, batch, split + 1, outSeq, outEvent);
         const InputMessage* next;
         if (batch.samples.isEmpty()) {
             mBatches.removeAt(i);
-            next = NULL;
+            next = nullptr;
         } else {
             next = &batch.samples.itemAt(0);
         }
@@ -557,7 +594,7 @@
 }
 
 status_t InputConsumer::consumeSamples(InputEventFactoryInterface* factory,
-        Batch& batch, size_t count, uint32_t* outSeq, InputEvent** outEvent, int32_t* displayId) {
+        Batch& batch, size_t count, uint32_t* outSeq, InputEvent** outEvent) {
     MotionEvent* motionEvent = factory->createMotionEvent();
     if (! motionEvent) return NO_MEMORY;
 
@@ -572,7 +609,6 @@
             mSeqChains.push(seqChain);
             addSample(motionEvent, &msg);
         } else {
-            *displayId = msg.body.motion.displayId;
             initializeMotionEvent(motionEvent, &msg);
         }
         chain = msg.body.motion.seq;
@@ -928,6 +964,7 @@
     event->initialize(
             msg->body.key.deviceId,
             msg->body.key.source,
+            msg->body.key.displayId,
             msg->body.key.action,
             msg->body.key.flags,
             msg->body.key.keyCode,
@@ -950,6 +987,7 @@
     event->initialize(
             msg->body.motion.deviceId,
             msg->body.motion.source,
+            msg->body.motion.displayId,
             msg->body.motion.action,
             msg->body.motion.actionButton,
             msg->body.motion.flags,
diff --git a/libs/input/InputWindow.cpp b/libs/input/InputWindow.cpp
new file mode 100644
index 0000000..f94faba
--- /dev/null
+++ b/libs/input/InputWindow.cpp
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "InputWindow"
+#define LOG_NDEBUG 0
+
+#include <binder/Parcel.h>
+#include <input/InputWindow.h>
+#include <input/InputTransport.h>
+
+#include <log/log.h>
+
+#include <ui/Rect.h>
+#include <ui/Region.h>
+
+namespace android {
+
+// --- InputWindowInfo ---
+void InputWindowInfo::addTouchableRegion(const Rect& region) {
+    touchableRegion.orSelf(region);
+}
+
+bool InputWindowInfo::touchableRegionContainsPoint(int32_t x, int32_t y) const {
+    return touchableRegion.contains(x,y);
+}
+
+bool InputWindowInfo::frameContainsPoint(int32_t x, int32_t y) const {
+    return x >= frameLeft && x < frameRight
+            && y >= frameTop && y < frameBottom;
+}
+
+bool InputWindowInfo::isTrustedOverlay() const {
+    return layoutParamsType == TYPE_INPUT_METHOD
+            || layoutParamsType == TYPE_INPUT_METHOD_DIALOG
+            || layoutParamsType == TYPE_MAGNIFICATION_OVERLAY
+            || layoutParamsType == TYPE_STATUS_BAR
+            || layoutParamsType == TYPE_NAVIGATION_BAR
+            || layoutParamsType == TYPE_NAVIGATION_BAR_PANEL
+            || layoutParamsType == TYPE_SECURE_SYSTEM_OVERLAY
+            || layoutParamsType == TYPE_DOCK_DIVIDER
+            || layoutParamsType == TYPE_ACCESSIBILITY_OVERLAY
+            || layoutParamsType == TYPE_INPUT_CONSUMER;
+}
+
+bool InputWindowInfo::supportsSplitTouch() const {
+    return layoutParamsFlags & FLAG_SPLIT_TOUCH;
+}
+
+bool InputWindowInfo::overlaps(const InputWindowInfo* other) const {
+    return frameLeft < other->frameRight && frameRight > other->frameLeft
+            && frameTop < other->frameBottom && frameBottom > other->frameTop;
+}
+
+status_t InputWindowInfo::write(Parcel& output) const {
+    if (inputChannel == nullptr) {
+        output.writeInt32(0);
+        return OK;
+    }
+    output.writeInt32(1);
+    status_t s = inputChannel->write(output);
+    if (s != OK) return s;
+
+    output.writeString8(String8(name.c_str()));
+    output.writeInt32(layoutParamsFlags);
+    output.writeInt32(layoutParamsType);
+    output.writeInt64(dispatchingTimeout);
+    output.writeInt32(frameLeft);
+    output.writeInt32(frameTop);
+    output.writeInt32(frameRight);
+    output.writeInt32(frameBottom);
+    output.writeFloat(scaleFactor);
+    output.writeBool(visible);
+    output.writeBool(canReceiveKeys);
+    output.writeBool(hasFocus);
+    output.writeBool(hasWallpaper);
+    output.writeBool(paused);
+    output.writeInt32(layer);
+    output.writeInt32(ownerPid);
+    output.writeInt32(ownerUid);
+    output.writeInt32(inputFeatures);
+    output.writeInt32(displayId);
+    output.write(touchableRegion);
+
+    return OK;
+}
+
+InputWindowInfo InputWindowInfo::read(const Parcel& from) {
+    InputWindowInfo ret;
+
+    if (from.readInt32() == 0) {
+        return ret;
+
+    }
+    sp<InputChannel> inputChannel = new InputChannel();
+    status_t s = inputChannel->read(from);
+    if (s != OK) {
+        return ret;
+    }
+
+    ret.inputChannel = inputChannel;
+    ret.name = from.readString8().c_str();
+    ret.layoutParamsFlags = from.readInt32();
+    ret.layoutParamsType = from.readInt32();
+    ret.dispatchingTimeout = from.readInt64();
+    ret.frameLeft = from.readInt32();
+    ret.frameTop = from.readInt32();
+    ret.frameRight = from.readInt32();
+    ret.frameBottom = from.readInt32();
+    ret.scaleFactor = from.readFloat();
+    ret.visible = from.readBool();
+    ret.canReceiveKeys = from.readBool();
+    ret.hasFocus = from.readBool();
+    ret.hasWallpaper = from.readBool();
+    ret.paused = from.readBool();
+    ret.layer = from.readInt32();
+    ret.ownerPid = from.readInt32();
+    ret.ownerUid = from.readInt32();
+    ret.inputFeatures = from.readInt32();
+    ret.displayId = from.readInt32();
+    from.read(ret.touchableRegion);
+
+    return ret;
+}
+
+// --- InputWindowHandle ---
+
+InputWindowHandle::InputWindowHandle(const sp<InputApplicationHandle>& inputApplicationHandle) :
+    inputApplicationHandle(inputApplicationHandle), mInfo(nullptr) {
+}
+
+InputWindowHandle::~InputWindowHandle() {
+    delete mInfo;
+}
+
+void InputWindowHandle::releaseInfo() {
+    if (mInfo) {
+        delete mInfo;
+        mInfo = nullptr;
+    }
+}
+
+sp<InputChannel> InputWindowHandle::getInputChannel() const {
+    return mInfo ? mInfo->inputChannel : nullptr;
+}
+
+} // namespace android
diff --git a/libs/input/KeyCharacterMap.cpp b/libs/input/KeyCharacterMap.cpp
index cba1111..e189d20 100644
--- a/libs/input/KeyCharacterMap.cpp
+++ b/libs/input/KeyCharacterMap.cpp
@@ -106,14 +106,14 @@
     }
 }
 
-status_t KeyCharacterMap::load(const String8& filename,
+status_t KeyCharacterMap::load(const std::string& filename,
         Format format, sp<KeyCharacterMap>* outMap) {
     outMap->clear();
 
     Tokenizer* tokenizer;
-    status_t status = Tokenizer::open(filename, &tokenizer);
+    status_t status = Tokenizer::open(String8(filename.c_str()), &tokenizer);
     if (status) {
-        ALOGE("Error %d opening key character map file %s.", status, filename.string());
+        ALOGE("Error %d opening key character map file %s.", status, filename.c_str());
     } else {
         status = load(tokenizer, format, outMap);
         delete tokenizer;
@@ -121,12 +121,12 @@
     return status;
 }
 
-status_t KeyCharacterMap::loadContents(const String8& filename, const char* contents,
+status_t KeyCharacterMap::loadContents(const std::string& filename, const char* contents,
         Format format, sp<KeyCharacterMap>* outMap) {
     outMap->clear();
 
     Tokenizer* tokenizer;
-    status_t status = Tokenizer::fromContents(filename, contents, &tokenizer);
+    status_t status = Tokenizer::fromContents(String8(filename.c_str()), contents, &tokenizer);
     if (status) {
         ALOGE("Error %d opening key character map.", status);
     } else {
@@ -164,10 +164,10 @@
 
 sp<KeyCharacterMap> KeyCharacterMap::combine(const sp<KeyCharacterMap>& base,
         const sp<KeyCharacterMap>& overlay) {
-    if (overlay == NULL) {
+    if (overlay == nullptr) {
         return base;
     }
-    if (base == NULL) {
+    if (base == nullptr) {
         return overlay;
     }
 
@@ -468,7 +468,7 @@
 
         // Try to find the most general behavior that maps to this character.
         // For example, the base key behavior will usually be last in the list.
-        const Behavior* found = NULL;
+        const Behavior* found = nullptr;
         for (const Behavior* behavior = key->firstBehavior; behavior; behavior = behavior->next) {
             if (behavior->character == ch) {
                 found = behavior;
@@ -487,7 +487,7 @@
         int32_t deviceId, int32_t keyCode, int32_t metaState, bool down, nsecs_t time) {
     outEvents.push();
     KeyEvent& event = outEvents.editTop();
-    event.initialize(deviceId, AINPUT_SOURCE_KEYBOARD,
+    event.initialize(deviceId, AINPUT_SOURCE_KEYBOARD, ADISPLAY_ID_NONE,
             down ? AKEY_EVENT_ACTION_DOWN : AKEY_EVENT_ACTION_UP,
             0, keyCode, 0, metaState, 0, time, time);
 }
@@ -605,11 +605,11 @@
     map->mType = parcel->readInt32();
     size_t numKeys = parcel->readInt32();
     if (parcel->errorCheck()) {
-        return NULL;
+        return nullptr;
     }
     if (numKeys > MAX_KEYS) {
         ALOGE("Too many keys in KeyCharacterMap (%zu > %d)", numKeys, MAX_KEYS);
-        return NULL;
+        return nullptr;
     }
 
     for (size_t i = 0; i < numKeys; i++) {
@@ -617,7 +617,7 @@
         char16_t label = parcel->readInt32();
         char16_t number = parcel->readInt32();
         if (parcel->errorCheck()) {
-            return NULL;
+            return nullptr;
         }
 
         Key* key = new Key();
@@ -625,14 +625,14 @@
         key->number = number;
         map->mKeys.add(keyCode, key);
 
-        Behavior* lastBehavior = NULL;
+        Behavior* lastBehavior = nullptr;
         while (parcel->readInt32()) {
             int32_t metaState = parcel->readInt32();
             char16_t character = parcel->readInt32();
             int32_t fallbackKeyCode = parcel->readInt32();
             int32_t replacementKeyCode = parcel->readInt32();
             if (parcel->errorCheck()) {
-                return NULL;
+                return nullptr;
             }
 
             Behavior* behavior = new Behavior();
@@ -649,7 +649,7 @@
         }
 
         if (parcel->errorCheck()) {
-            return NULL;
+            return nullptr;
         }
     }
     return map;
@@ -666,7 +666,7 @@
         parcel->writeInt32(keyCode);
         parcel->writeInt32(key->label);
         parcel->writeInt32(key->number);
-        for (const Behavior* behavior = key->firstBehavior; behavior != NULL;
+        for (const Behavior* behavior = key->firstBehavior; behavior != nullptr;
                 behavior = behavior->next) {
             parcel->writeInt32(1);
             parcel->writeInt32(behavior->metaState);
@@ -683,12 +683,12 @@
 // --- KeyCharacterMap::Key ---
 
 KeyCharacterMap::Key::Key() :
-        label(0), number(0), firstBehavior(NULL) {
+        label(0), number(0), firstBehavior(nullptr) {
 }
 
 KeyCharacterMap::Key::Key(const Key& other) :
         label(other.label), number(other.number),
-        firstBehavior(other.firstBehavior ? new Behavior(*other.firstBehavior) : NULL) {
+        firstBehavior(other.firstBehavior ? new Behavior(*other.firstBehavior) : nullptr) {
 }
 
 KeyCharacterMap::Key::~Key() {
@@ -704,11 +704,11 @@
 // --- KeyCharacterMap::Behavior ---
 
 KeyCharacterMap::Behavior::Behavior() :
-        next(NULL), metaState(0), character(0), fallbackKeyCode(0), replacementKeyCode(0) {
+        next(nullptr), metaState(0), character(0), fallbackKeyCode(0), replacementKeyCode(0) {
 }
 
 KeyCharacterMap::Behavior::Behavior(const Behavior& other) :
-        next(other.next ? new Behavior(*other.next) : NULL),
+        next(other.next ? new Behavior(*other.next) : nullptr),
         metaState(other.metaState), character(other.character),
         fallbackKeyCode(other.fallbackKeyCode),
         replacementKeyCode(other.replacementKeyCode) {
@@ -944,7 +944,7 @@
             properties.add(Property(PROPERTY_NUMBER));
         } else {
             int32_t metaState;
-            status_t status = parseModifier(token, &metaState);
+            status_t status = parseModifier(token.string(), &metaState);
             if (status) {
                 ALOGE("%s: Expected a property name or modifier, got '%s'.",
                         mTokenizer->getLocation().string(), token.string());
@@ -1137,7 +1137,7 @@
     return NO_ERROR;
 }
 
-status_t KeyCharacterMap::Parser::parseModifier(const String8& token, int32_t* outMetaState) {
+status_t KeyCharacterMap::Parser::parseModifier(const std::string& token, int32_t* outMetaState) {
     if (token == "base") {
         *outMetaState = 0;
         return NO_ERROR;
@@ -1145,7 +1145,7 @@
 
     int32_t combinedMeta = 0;
 
-    const char* str = token.string();
+    const char* str = token.c_str();
     const char* start = str;
     for (const char* cur = str; ; cur++) {
         char ch = *cur;
@@ -1164,7 +1164,7 @@
             }
             if (combinedMeta & metaState) {
                 ALOGE("%s: Duplicate modifier combination '%s'.",
-                        mTokenizer->getLocation().string(), token.string());
+                        mTokenizer->getLocation().string(), token.c_str());
                 return BAD_VALUE;
             }
 
diff --git a/libs/input/KeyLayoutMap.cpp b/libs/input/KeyLayoutMap.cpp
index 2b2f13e..88cb0db 100644
--- a/libs/input/KeyLayoutMap.cpp
+++ b/libs/input/KeyLayoutMap.cpp
@@ -49,13 +49,13 @@
 KeyLayoutMap::~KeyLayoutMap() {
 }
 
-status_t KeyLayoutMap::load(const String8& filename, sp<KeyLayoutMap>* outMap) {
+status_t KeyLayoutMap::load(const std::string& filename, sp<KeyLayoutMap>* outMap) {
     outMap->clear();
 
     Tokenizer* tokenizer;
-    status_t status = Tokenizer::open(filename, &tokenizer);
+    status_t status = Tokenizer::open(String8(filename.c_str()), &tokenizer);
     if (status) {
-        ALOGE("Error %d opening key layout map file %s.", status, filename.string());
+        ALOGE("Error %d opening key layout map file %s.", status, filename.c_str());
     } else {
         sp<KeyLayoutMap> map = new KeyLayoutMap();
         if (!map.get()) {
@@ -117,7 +117,7 @@
             return &mKeysByScanCode.valueAt(index);
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 status_t KeyLayoutMap::findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const {
diff --git a/libs/input/Keyboard.cpp b/libs/input/Keyboard.cpp
index 11842ee..0c22bfe 100644
--- a/libs/input/Keyboard.cpp
+++ b/libs/input/Keyboard.cpp
@@ -45,22 +45,22 @@
         String8 keyLayoutName;
         if (deviceConfiguration->tryGetProperty(String8("keyboard.layout"),
                 keyLayoutName)) {
-            status_t status = loadKeyLayout(deviceIdenfifier, keyLayoutName);
+            status_t status = loadKeyLayout(deviceIdenfifier, keyLayoutName.c_str());
             if (status == NAME_NOT_FOUND) {
                 ALOGE("Configuration for keyboard device '%s' requested keyboard layout '%s' but "
                         "it was not found.",
-                        deviceIdenfifier.name.string(), keyLayoutName.string());
+                        deviceIdenfifier.name.c_str(), keyLayoutName.string());
             }
         }
 
         String8 keyCharacterMapName;
         if (deviceConfiguration->tryGetProperty(String8("keyboard.characterMap"),
                 keyCharacterMapName)) {
-            status_t status = loadKeyCharacterMap(deviceIdenfifier, keyCharacterMapName);
+            status_t status = loadKeyCharacterMap(deviceIdenfifier, keyCharacterMapName.c_str());
             if (status == NAME_NOT_FOUND) {
                 ALOGE("Configuration for keyboard device '%s' requested keyboard character "
                         "map '%s' but it was not found.",
-                        deviceIdenfifier.name.string(), keyLayoutName.string());
+                        deviceIdenfifier.name.c_str(), keyLayoutName.string());
             }
         }
 
@@ -70,30 +70,30 @@
     }
 
     // Try searching by device identifier.
-    if (probeKeyMap(deviceIdenfifier, String8::empty())) {
+    if (probeKeyMap(deviceIdenfifier, "")) {
         return OK;
     }
 
     // Fall back on the Generic key map.
     // TODO Apply some additional heuristics here to figure out what kind of
     //      generic key map to use (US English, etc.) for typical external keyboards.
-    if (probeKeyMap(deviceIdenfifier, String8("Generic"))) {
+    if (probeKeyMap(deviceIdenfifier, "Generic")) {
         return OK;
     }
 
     // Try the Virtual key map as a last resort.
-    if (probeKeyMap(deviceIdenfifier, String8("Virtual"))) {
+    if (probeKeyMap(deviceIdenfifier, "Virtual")) {
         return OK;
     }
 
     // Give up!
     ALOGE("Could not determine key map for device '%s' and no default key maps were found!",
-            deviceIdenfifier.name.string());
+            deviceIdenfifier.name.c_str());
     return NAME_NOT_FOUND;
 }
 
 bool KeyMap::probeKeyMap(const InputDeviceIdentifier& deviceIdentifier,
-        const String8& keyMapName) {
+        const std::string& keyMapName) {
     if (!haveKeyLayout()) {
         loadKeyLayout(deviceIdentifier, keyMapName);
     }
@@ -104,10 +104,10 @@
 }
 
 status_t KeyMap::loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier,
-        const String8& name) {
-    String8 path(getPath(deviceIdentifier, name,
+        const std::string& name) {
+    std::string path(getPath(deviceIdentifier, name,
             INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_LAYOUT));
-    if (path.isEmpty()) {
+    if (path.empty()) {
         return NAME_NOT_FOUND;
     }
 
@@ -116,15 +116,15 @@
         return status;
     }
 
-    keyLayoutFile.setTo(path);
+    keyLayoutFile = path;
     return OK;
 }
 
 status_t KeyMap::loadKeyCharacterMap(const InputDeviceIdentifier& deviceIdentifier,
-        const String8& name) {
-    String8 path(getPath(deviceIdentifier, name,
-            INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP));
-    if (path.isEmpty()) {
+        const std::string& name) {
+    std::string path = getPath(deviceIdentifier, name,
+            INPUT_DEVICE_CONFIGURATION_FILE_TYPE_KEY_CHARACTER_MAP);
+    if (path.empty()) {
         return NAME_NOT_FOUND;
     }
 
@@ -134,13 +134,13 @@
         return status;
     }
 
-    keyCharacterMapFile.setTo(path);
+    keyCharacterMapFile = path;
     return OK;
 }
 
-String8 KeyMap::getPath(const InputDeviceIdentifier& deviceIdentifier,
-        const String8& name, InputDeviceConfigurationFileType type) {
-    return name.isEmpty()
+std::string KeyMap::getPath(const InputDeviceIdentifier& deviceIdentifier,
+        const std::string& name, InputDeviceConfigurationFileType type) {
+    return name.empty()
             ? getInputDeviceConfigurationFilePathByDeviceIdentifier(deviceIdentifier, type)
             : getInputDeviceConfigurationFilePathByName(name, type);
 }
@@ -174,7 +174,7 @@
         }
     }
 
-    return strstr(deviceIdentifier.name.string(), "-keypad");
+    return strstr(deviceIdentifier.name.c_str(), "-keypad");
 }
 
 static int32_t setEphemeralMetaState(int32_t mask, bool down, int32_t oldMetaState) {
diff --git a/libs/input/VelocityTracker.cpp b/libs/input/VelocityTracker.cpp
index f72e49b..1bbd82b 100644
--- a/libs/input/VelocityTracker.cpp
+++ b/libs/input/VelocityTracker.cpp
@@ -117,7 +117,7 @@
 
     // Allow the default strategy to be overridden using a system property for debugging.
     if (!strategy) {
-        int length = property_get("debug.velocitytracker.strategy", value, NULL);
+        int length = property_get("persist.input.velocitytracker.strategy", value, nullptr);
         if (length > 0) {
             strategy = value;
         } else {
@@ -141,7 +141,7 @@
 
 bool VelocityTracker::configureStrategy(const char* strategy) {
     mStrategy = createStrategy(strategy);
-    return mStrategy != NULL;
+    return mStrategy != nullptr;
 }
 
 VelocityTrackerStrategy* VelocityTracker::createStrategy(const char* strategy) {
@@ -206,7 +206,7 @@
         // time to adjust to changes in direction.
         return new LegacyVelocityTrackerStrategy();
     }
-    return NULL;
+    return nullptr;
 }
 
 void VelocityTracker::clear() {
diff --git a/libs/input/VirtualKeyMap.cpp b/libs/input/VirtualKeyMap.cpp
index 28ea717..3ec53bf 100644
--- a/libs/input/VirtualKeyMap.cpp
+++ b/libs/input/VirtualKeyMap.cpp
@@ -46,13 +46,13 @@
 VirtualKeyMap::~VirtualKeyMap() {
 }
 
-status_t VirtualKeyMap::load(const String8& filename, VirtualKeyMap** outMap) {
-    *outMap = NULL;
+status_t VirtualKeyMap::load(const std::string& filename, VirtualKeyMap** outMap) {
+    *outMap = nullptr;
 
     Tokenizer* tokenizer;
-    status_t status = Tokenizer::open(filename, &tokenizer);
+    status_t status = Tokenizer::open(String8(filename.c_str()), &tokenizer);
     if (status) {
-        ALOGE("Error %d opening virtual key map file %s.", status, filename.string());
+        ALOGE("Error %d opening virtual key map file %s.", status, filename.c_str());
     } else {
         VirtualKeyMap* map = new VirtualKeyMap();
         if (!map) {
diff --git a/libs/input/tests/Android.bp b/libs/input/tests/Android.bp
index f06119f..fdd945e 100644
--- a/libs/input/tests/Android.bp
+++ b/libs/input/tests/Android.bp
@@ -6,6 +6,7 @@
         "InputEvent_test.cpp",
         "InputPublisherAndConsumer_test.cpp",
         "VelocityTracker_test.cpp",
+        "InputWindow_test.cpp"
     ],
     cflags: [
         "-Wall",
@@ -34,4 +35,12 @@
         "-Wall",
         "-Werror",
     ],
+    shared_libs: [
+        "libinput",
+        "libcutils",
+        "libutils",
+        "libbinder",
+        "libui",
+        "libbase",
+    ]
 }
diff --git a/libs/input/tests/InputEvent_test.cpp b/libs/input/tests/InputEvent_test.cpp
index fd3b7c8..99f83ba 100644
--- a/libs/input/tests/InputEvent_test.cpp
+++ b/libs/input/tests/InputEvent_test.cpp
@@ -22,6 +22,9 @@
 
 namespace android {
 
+// Default display id.
+static constexpr int32_t DISPLAY_ID = ADISPLAY_ID_DEFAULT;
+
 class BaseTest : public testing::Test {
 protected:
     virtual void SetUp() { }
@@ -178,13 +181,14 @@
     // Initialize and get properties.
     const nsecs_t ARBITRARY_DOWN_TIME = 1;
     const nsecs_t ARBITRARY_EVENT_TIME = 2;
-    event.initialize(2, AINPUT_SOURCE_GAMEPAD, AKEY_EVENT_ACTION_DOWN,
+    event.initialize(2, AINPUT_SOURCE_GAMEPAD, DISPLAY_ID, AKEY_EVENT_ACTION_DOWN,
             AKEY_EVENT_FLAG_FROM_SYSTEM, AKEYCODE_BUTTON_X, 121,
             AMETA_ALT_ON, 1, ARBITRARY_DOWN_TIME, ARBITRARY_EVENT_TIME);
 
     ASSERT_EQ(AINPUT_EVENT_TYPE_KEY, event.getType());
     ASSERT_EQ(2, event.getDeviceId());
     ASSERT_EQ(static_cast<int>(AINPUT_SOURCE_GAMEPAD), event.getSource());
+    ASSERT_EQ(DISPLAY_ID, event.getDisplayId());
     ASSERT_EQ(AKEY_EVENT_ACTION_DOWN, event.getAction());
     ASSERT_EQ(AKEY_EVENT_FLAG_FROM_SYSTEM, event.getFlags());
     ASSERT_EQ(AKEYCODE_BUTTON_X, event.getKeyCode());
@@ -197,6 +201,11 @@
     // Set source.
     event.setSource(AINPUT_SOURCE_JOYSTICK);
     ASSERT_EQ(static_cast<int>(AINPUT_SOURCE_JOYSTICK), event.getSource());
+
+    // Set display id.
+    constexpr int32_t newDisplayId = 2;
+    event.setDisplayId(newDisplayId);
+    ASSERT_EQ(newDisplayId, event.getDisplayId());
 }
 
 
@@ -248,7 +257,7 @@
     pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, 26);
     pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, 27);
     pointerCoords[1].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, 28);
-    event->initialize(2, AINPUT_SOURCE_TOUCHSCREEN, AMOTION_EVENT_ACTION_MOVE, 0,
+    event->initialize(2, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID, AMOTION_EVENT_ACTION_MOVE, 0,
             AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED,
             AMOTION_EVENT_EDGE_FLAG_TOP, AMETA_ALT_ON, AMOTION_EVENT_BUTTON_PRIMARY,
             X_OFFSET, Y_OFFSET, 2.0f, 2.1f,
@@ -301,6 +310,7 @@
     ASSERT_EQ(AINPUT_EVENT_TYPE_MOTION, event->getType());
     ASSERT_EQ(2, event->getDeviceId());
     ASSERT_EQ(static_cast<int>(AINPUT_SOURCE_TOUCHSCREEN), event->getSource());
+    ASSERT_EQ(DISPLAY_ID, event->getDisplayId());
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, event->getAction());
     ASSERT_EQ(AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED, event->getFlags());
     ASSERT_EQ(AMOTION_EVENT_EDGE_FLAG_TOP, event->getEdgeFlags());
@@ -434,6 +444,11 @@
     event.setSource(AINPUT_SOURCE_JOYSTICK);
     ASSERT_EQ(static_cast<int>(AINPUT_SOURCE_JOYSTICK), event.getSource());
 
+    // Set displayId.
+    constexpr int32_t newDisplayId = 2;
+    event.setDisplayId(newDisplayId);
+    ASSERT_EQ(newDisplayId, event.getDisplayId());
+
     // Set action.
     event.setAction(AMOTION_EVENT_ACTION_CANCEL);
     ASSERT_EQ(AMOTION_EVENT_ACTION_CANCEL, event.getAction());
@@ -557,7 +572,7 @@
         pointerCoords[i].setAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, angle);
     }
     MotionEvent event;
-    event.initialize(0, 0, AMOTION_EVENT_ACTION_MOVE, 0, 0, 0, 0, 0,
+    event.initialize(0, 0, DISPLAY_ID, AMOTION_EVENT_ACTION_MOVE, 0, 0, 0, 0, 0,
             0, 0, 0, 0, 0, 0, pointerCount, pointerProperties, pointerCoords);
     float originalRawX = 0 + 3;
     float originalRawY = -RADIUS + 2;
diff --git a/libs/input/tests/InputPublisherAndConsumer_test.cpp b/libs/input/tests/InputPublisherAndConsumer_test.cpp
index c532241..0788c89 100644
--- a/libs/input/tests/InputPublisherAndConsumer_test.cpp
+++ b/libs/input/tests/InputPublisherAndConsumer_test.cpp
@@ -46,12 +46,12 @@
     virtual void TearDown() {
         if (mPublisher) {
             delete mPublisher;
-            mPublisher = NULL;
+            mPublisher = nullptr;
         }
 
         if (mConsumer) {
             delete mConsumer;
-            mConsumer = NULL;
+            mConsumer = nullptr;
         }
 
         serverChannel.clear();
@@ -70,32 +70,31 @@
 void InputPublisherAndConsumerTest::PublishAndConsumeKeyEvent() {
     status_t status;
 
-    const uint32_t seq = 15;
-    const int32_t deviceId = 1;
-    const int32_t source = AINPUT_SOURCE_KEYBOARD;
-    const int32_t action = AKEY_EVENT_ACTION_DOWN;
-    const int32_t flags = AKEY_EVENT_FLAG_FROM_SYSTEM;
-    const int32_t keyCode = AKEYCODE_ENTER;
-    const int32_t scanCode = 13;
-    const int32_t metaState = AMETA_ALT_LEFT_ON | AMETA_ALT_ON;
-    const int32_t repeatCount = 1;
-    const nsecs_t downTime = 3;
-    const nsecs_t eventTime = 4;
+    constexpr uint32_t seq = 15;
+    constexpr int32_t deviceId = 1;
+    constexpr int32_t source = AINPUT_SOURCE_KEYBOARD;
+    constexpr int32_t displayId = ADISPLAY_ID_DEFAULT;
+    constexpr int32_t action = AKEY_EVENT_ACTION_DOWN;
+    constexpr int32_t flags = AKEY_EVENT_FLAG_FROM_SYSTEM;
+    constexpr int32_t keyCode = AKEYCODE_ENTER;
+    constexpr int32_t scanCode = 13;
+    constexpr int32_t metaState = AMETA_ALT_LEFT_ON | AMETA_ALT_ON;
+    constexpr int32_t repeatCount = 1;
+    constexpr nsecs_t downTime = 3;
+    constexpr nsecs_t eventTime = 4;
 
-    status = mPublisher->publishKeyEvent(seq, deviceId, source, action, flags,
+    status = mPublisher->publishKeyEvent(seq, deviceId, source, displayId, action, flags,
             keyCode, scanCode, metaState, repeatCount, downTime, eventTime);
     ASSERT_EQ(OK, status)
             << "publisher publishKeyEvent should return OK";
 
     uint32_t consumeSeq;
     InputEvent* event;
-    int32_t displayId;
-    status = mConsumer->consume(&mEventFactory, true /*consumeBatches*/, -1, &consumeSeq, &event,
-            &displayId);
+    status = mConsumer->consume(&mEventFactory, true /*consumeBatches*/, -1, &consumeSeq, &event);
     ASSERT_EQ(OK, status)
             << "consumer consume should return OK";
 
-    ASSERT_TRUE(event != NULL)
+    ASSERT_TRUE(event != nullptr)
             << "consumer should have returned non-NULL event";
     ASSERT_EQ(AINPUT_EVENT_TYPE_KEY, event->getType())
             << "consumer should have returned a key event";
@@ -104,6 +103,7 @@
     EXPECT_EQ(seq, consumeSeq);
     EXPECT_EQ(deviceId, keyEvent->getDeviceId());
     EXPECT_EQ(source, keyEvent->getSource());
+    EXPECT_EQ(displayId, keyEvent->getDisplayId());
     EXPECT_EQ(action, keyEvent->getAction());
     EXPECT_EQ(flags, keyEvent->getFlags());
     EXPECT_EQ(keyCode, keyEvent->getKeyCode());
@@ -131,23 +131,23 @@
 void InputPublisherAndConsumerTest::PublishAndConsumeMotionEvent() {
     status_t status;
 
-    const uint32_t seq = 15;
-    const int32_t deviceId = 1;
-    const int32_t source = AINPUT_SOURCE_TOUCHSCREEN;
-    int32_t displayId = 0;
-    const int32_t action = AMOTION_EVENT_ACTION_MOVE;
-    const int32_t actionButton = 0;
-    const int32_t flags = AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED;
-    const int32_t edgeFlags = AMOTION_EVENT_EDGE_FLAG_TOP;
-    const int32_t metaState = AMETA_ALT_LEFT_ON | AMETA_ALT_ON;
-    const int32_t buttonState = AMOTION_EVENT_BUTTON_PRIMARY;
-    const float xOffset = -10;
-    const float yOffset = -20;
-    const float xPrecision = 0.25;
-    const float yPrecision = 0.5;
-    const nsecs_t downTime = 3;
-    const size_t pointerCount = 3;
-    const nsecs_t eventTime = 4;
+    constexpr uint32_t seq = 15;
+    constexpr int32_t deviceId = 1;
+    constexpr int32_t source = AINPUT_SOURCE_TOUCHSCREEN;
+    constexpr int32_t displayId = ADISPLAY_ID_DEFAULT;
+    constexpr int32_t action = AMOTION_EVENT_ACTION_MOVE;
+    constexpr int32_t actionButton = 0;
+    constexpr int32_t flags = AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED;
+    constexpr int32_t edgeFlags = AMOTION_EVENT_EDGE_FLAG_TOP;
+    constexpr int32_t metaState = AMETA_ALT_LEFT_ON | AMETA_ALT_ON;
+    constexpr int32_t buttonState = AMOTION_EVENT_BUTTON_PRIMARY;
+    constexpr float xOffset = -10;
+    constexpr float yOffset = -20;
+    constexpr float xPrecision = 0.25;
+    constexpr float yPrecision = 0.5;
+    constexpr nsecs_t downTime = 3;
+    constexpr size_t pointerCount = 3;
+    constexpr nsecs_t eventTime = 4;
     PointerProperties pointerProperties[pointerCount];
     PointerCoords pointerCoords[pointerCount];
     for (size_t i = 0; i < pointerCount; i++) {
@@ -176,12 +176,11 @@
 
     uint32_t consumeSeq;
     InputEvent* event;
-    status = mConsumer->consume(&mEventFactory, true /*consumeBatches*/, -1, &consumeSeq, &event,
-            &displayId);
+    status = mConsumer->consume(&mEventFactory, true /*consumeBatches*/, -1, &consumeSeq, &event);
     ASSERT_EQ(OK, status)
             << "consumer consume should return OK";
 
-    ASSERT_TRUE(event != NULL)
+    ASSERT_TRUE(event != nullptr)
             << "consumer should have returned non-NULL event";
     ASSERT_EQ(AINPUT_EVENT_TYPE_MOTION, event->getType())
             << "consumer should have returned a motion event";
@@ -190,6 +189,7 @@
     EXPECT_EQ(seq, consumeSeq);
     EXPECT_EQ(deviceId, motionEvent->getDeviceId());
     EXPECT_EQ(source, motionEvent->getSource());
+    EXPECT_EQ(displayId, motionEvent->getDisplayId());
     EXPECT_EQ(action, motionEvent->getAction());
     EXPECT_EQ(flags, motionEvent->getFlags());
     EXPECT_EQ(edgeFlags, motionEvent->getEdgeFlags());
diff --git a/libs/input/tests/InputWindow_test.cpp b/libs/input/tests/InputWindow_test.cpp
new file mode 100644
index 0000000..39ad26e
--- /dev/null
+++ b/libs/input/tests/InputWindow_test.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <binder/Parcel.h>
+
+#include <input/InputWindow.h>
+#include <input/InputTransport.h>
+
+namespace android {
+namespace test {
+
+TEST(InputWindowInfo, ParcellingWithoutChannel) {
+    InputWindowInfo i;
+    i.inputChannel = nullptr;
+
+    Parcel p;
+    ASSERT_EQ(OK, i.write(p));
+    p.setDataPosition(0);
+    InputWindowInfo i2 = InputWindowInfo::read(p);
+    ASSERT_TRUE(i2.inputChannel == nullptr);
+}
+
+TEST(InputWindowInfo, Parcelling) {
+    sp<InputChannel> channel, junkChannel;
+    status_t result = InputChannel::openInputChannelPair("name", channel, junkChannel);
+    ASSERT_EQ(OK, result) << "openInputChannelPair should have returned valid channels";
+
+    InputWindowInfo i;
+    i.inputChannel = channel;
+    i.name = "Foobar";
+    i.layoutParamsFlags = 7;
+    i.layoutParamsType = 39;
+    i.dispatchingTimeout = 12;
+    i.frameLeft = 93;
+    i.frameTop = 34;
+    i.frameRight = 16;
+    i.frameBottom = 19;
+    i.scaleFactor = 0.3;
+    i.visible = false;
+    i.canReceiveKeys = false;
+    i.hasFocus = false;
+    i.hasWallpaper = false;
+    i.paused = false;
+    i.layer = 7;
+    i.ownerPid = 19;
+    i.ownerUid = 24;
+    i.inputFeatures = 29;
+    i.displayId = 34;
+
+    Parcel p;
+    i.write(p);
+
+    p.setDataPosition(0);
+    InputWindowInfo i2 = InputWindowInfo::read(p);
+    ASSERT_EQ(i.inputChannel->getName(), i2.inputChannel->getName());
+    ASSERT_EQ(i.name, i2.name);
+    ASSERT_EQ(i.layoutParamsFlags, i2.layoutParamsFlags);
+    ASSERT_EQ(i.layoutParamsType, i2.layoutParamsType);
+    ASSERT_EQ(i.dispatchingTimeout, i2.dispatchingTimeout);
+    ASSERT_EQ(i.frameLeft, i2.frameLeft);
+    ASSERT_EQ(i.frameTop, i2.frameTop);
+    ASSERT_EQ(i.frameRight, i2.frameRight);
+    ASSERT_EQ(i.frameBottom, i2.frameBottom);
+    ASSERT_EQ(i.scaleFactor, i2.scaleFactor);
+    ASSERT_EQ(i.visible, i2.visible);
+    ASSERT_EQ(i.canReceiveKeys, i2.canReceiveKeys);
+    ASSERT_EQ(i.hasFocus, i2.hasFocus);
+    ASSERT_EQ(i.hasWallpaper, i2.hasWallpaper);
+    ASSERT_EQ(i.paused, i2.paused);
+    ASSERT_EQ(i.layer, i2.layer);
+    ASSERT_EQ(i.ownerPid, i2.ownerPid);
+    ASSERT_EQ(i.ownerUid, i2.ownerUid);
+    ASSERT_EQ(i.inputFeatures, i2.inputFeatures);
+    ASSERT_EQ(i.displayId, i2.displayId);
+}
+
+} // namespace test
+} // namespace android
diff --git a/libs/input/tests/VelocityTracker_test.cpp b/libs/input/tests/VelocityTracker_test.cpp
index 9da2e2a..af97c34 100644
--- a/libs/input/tests/VelocityTracker_test.cpp
+++ b/libs/input/tests/VelocityTracker_test.cpp
@@ -27,6 +27,8 @@
 
 namespace android {
 
+constexpr int32_t DISPLAY_ID = ADISPLAY_ID_DEFAULT; // default display id
+
 constexpr int32_t DEFAULT_POINTER_ID = 0; // pointer ID used for manually defined tests
 
 // velocity must be in the range (1-tol)*EV <= velocity <= (1+tol)*EV
@@ -96,7 +98,7 @@
     // First sample added separately with initialize
     coords.setAxisValue(AMOTION_EVENT_AXIS_X, positions[0].x);
     coords.setAxisValue(AMOTION_EVENT_AXIS_Y, positions[0].y);
-    event->initialize(0, AINPUT_SOURCE_TOUCHSCREEN, AMOTION_EVENT_ACTION_MOVE,
+    event->initialize(0, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID, AMOTION_EVENT_ACTION_MOVE,
             0, 0, 0, 0, 0, 0, 0, 0, 0, 0, positions[0].time, 1, properties, &coords);
 
     for (size_t i = 1; i < numSamples; i++) {
diff --git a/libs/sensor/Sensor.cpp b/libs/sensor/Sensor.cpp
index a0e368c..d9a986e 100644
--- a/libs/sensor/Sensor.cpp
+++ b/libs/sensor/Sensor.cpp
@@ -318,7 +318,7 @@
         // If the sensor is protected by a permission we need to know if it is
         // a runtime one to determine whether we can use the permission cache.
         sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
-        if (binder != 0) {
+        if (binder != nullptr) {
             sp<IPermissionController> permCtrl = interface_cast<IPermissionController>(binder);
             mRequiredPermissionRuntime = permCtrl->isRuntimePermission(
                     String16(mRequiredPermission));
diff --git a/libs/sensor/SensorEventQueue.cpp b/libs/sensor/SensorEventQueue.cpp
index 6f68fb5..46ba7c6 100644
--- a/libs/sensor/SensorEventQueue.cpp
+++ b/libs/sensor/SensorEventQueue.cpp
@@ -37,7 +37,7 @@
 // ----------------------------------------------------------------------------
 
 SensorEventQueue::SensorEventQueue(const sp<ISensorEventConnection>& connection)
-    : mSensorEventConnection(connection), mRecBuffer(NULL), mAvailable(0), mConsumed(0),
+    : mSensorEventConnection(connection), mRecBuffer(nullptr), mAvailable(0), mConsumed(0),
       mNumAcksToSend(0) {
     mRecBuffer = new ASensorEvent[MAX_RECEIVE_BUFFER_EVENT_COUNT];
 }
@@ -82,9 +82,9 @@
 sp<Looper> SensorEventQueue::getLooper() const
 {
     Mutex::Autolock _l(mLock);
-    if (mLooper == 0) {
+    if (mLooper == nullptr) {
         mLooper = new Looper(true);
-        mLooper->addFd(getFd(), getFd(), ALOOPER_EVENT_INPUT, NULL, NULL);
+        mLooper->addFd(getFd(), getFd(), ALOOPER_EVENT_INPUT, nullptr, nullptr);
     }
     return mLooper;
 }
@@ -97,7 +97,7 @@
     int events;
     int32_t result;
     do {
-        result = looper->pollOnce(-1, NULL, &events, NULL);
+        result = looper->pollOnce(-1, nullptr, &events, nullptr);
         if (result == ALOOPER_POLL_ERROR) {
             ALOGE("SensorEventQueue::waitForEvent error (errno=%d)", errno);
             result = -EPIPE; // unknown error, so we make up one
diff --git a/libs/sensor/SensorManager.cpp b/libs/sensor/SensorManager.cpp
index b9ae524..5840d51 100644
--- a/libs/sensor/SensorManager.cpp
+++ b/libs/sensor/SensorManager.cpp
@@ -62,7 +62,7 @@
         // to the wrong package and stats based on app ops may be slightly off.
         if (opPackageName.size() <= 0) {
             sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
-            if (binder != 0) {
+            if (binder != nullptr) {
                 const uid_t uid = IPCThreadState::self()->getCallingUid();
                 Vector<String16> packages;
                 interface_cast<IPermissionController>(binder)->getPackagesForUid(uid, packages);
@@ -93,7 +93,7 @@
 }
 
 SensorManager::SensorManager(const String16& opPackageName)
-    : mSensorList(0), mOpPackageName(opPackageName), mDirectConnectionHandle(1) {
+    : mSensorList(nullptr), mOpPackageName(opPackageName), mDirectConnectionHandle(1) {
     // okay we're not locked here, but it's not needed during construction
     assertStateLocked();
 }
@@ -128,13 +128,13 @@
     Mutex::Autolock _l(mLock);
     mSensorServer.clear();
     free(mSensorList);
-    mSensorList = NULL;
+    mSensorList = nullptr;
     mSensors.clear();
 }
 
 status_t SensorManager::assertStateLocked() {
     bool initSensorManager = false;
-    if (mSensorServer == NULL) {
+    if (mSensorServer == nullptr) {
         initSensorManager = true;
     } else {
         // Ping binder to check if sensorservice is alive.
@@ -164,7 +164,7 @@
         size_t count = mSensors.size();
         mSensorList =
                 static_cast<Sensor const**>(malloc(count * sizeof(Sensor*)));
-        LOG_ALWAYS_FATAL_IF(mSensorList == NULL, "mSensorList NULL");
+        LOG_ALWAYS_FATAL_IF(mSensorList == nullptr, "mSensorList NULL");
 
         for (size_t i=0 ; i<count ; i++) {
             mSensorList[i] = mSensors.array() + i;
@@ -222,7 +222,7 @@
             }
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 sp<SensorEventQueue> SensorManager::createEventQueue(String8 packageName, int mode) {
@@ -232,10 +232,10 @@
     while (assertStateLocked() == NO_ERROR) {
         sp<ISensorEventConnection> connection =
                 mSensorServer->createSensorEventConnection(packageName, mode, mOpPackageName);
-        if (connection == NULL) {
+        if (connection == nullptr) {
             // SensorService just died or the app doesn't have required permissions.
             ALOGE("createEventQueue: connection is NULL.");
-            return NULL;
+            return nullptr;
         }
         queue = new SensorEventQueue(connection);
         break;
diff --git a/libs/ui/Android.bp b/libs/ui/Android.bp
index d25ad1a..1605050 100644
--- a/libs/ui/Android.bp
+++ b/libs/ui/Android.bp
@@ -26,6 +26,7 @@
         "-Werror",
     ],
     cppflags: [
+        "-std=c++1z",
         "-Weverything",
 
         // The static constructors and destructors in this library have not been noted to
@@ -65,6 +66,7 @@
         "PixelFormat.cpp",
         "Rect.cpp",
         "Region.cpp",
+        "Transform.cpp",
         "UiConfig.cpp",
     ],
 
diff --git a/libs/ui/FenceTime.cpp b/libs/ui/FenceTime.cpp
index 1414766..340231d 100644
--- a/libs/ui/FenceTime.cpp
+++ b/libs/ui/FenceTime.cpp
@@ -33,18 +33,6 @@
 
 const auto FenceTime::NO_FENCE = std::make_shared<FenceTime>(Fence::NO_FENCE);
 
-void* FenceTime::operator new(size_t byteCount) noexcept {
-    void *p = nullptr;
-    if (posix_memalign(&p, alignof(FenceTime), byteCount)) {
-        return nullptr;
-    }
-    return p;
-}
-
-void FenceTime::operator delete(void *p) {
-    free(p);
-}
-
 FenceTime::FenceTime(const sp<Fence>& fence)
   : mState(((fence.get() != nullptr) && fence->isValid()) ?
             State::VALID : State::INVALID),
diff --git a/services/surfaceflinger/Transform.cpp b/libs/ui/Transform.cpp
similarity index 81%
rename from services/surfaceflinger/Transform.cpp
rename to libs/ui/Transform.cpp
index e05ed53..8e949ec 100644
--- a/services/surfaceflinger/Transform.cpp
+++ b/libs/ui/Transform.cpp
@@ -17,17 +17,12 @@
 #include <math.h>
 
 #include <cutils/compiler.h>
-#include <utils/String8.h>
 #include <ui/Region.h>
-
-#include "Transform.h"
-#include "clz.h"
-
-// ---------------------------------------------------------------------------
+#include <ui/Transform.h>
+#include <utils/String8.h>
 
 namespace android {
-
-// ---------------------------------------------------------------------------
+namespace ui {
 
 Transform::Transform() {
     reset();
@@ -41,8 +36,7 @@
     set(orientation, 0, 0);
 }
 
-Transform::~Transform() {
-}
+Transform::~Transform() = default;
 
 static const float EPSILON = 0.0f;
 
@@ -67,7 +61,7 @@
     const mat33& A(mMatrix);
     const mat33& B(rhs.mMatrix);
           mat33& D(r.mMatrix);
-    for (int i=0 ; i<3 ; i++) {
+    for (size_t i = 0; i < 3; i++) {
         const float v0 = A[0][i];
         const float v1 = A[1][i];
         const float v2 = A[2][i];
@@ -83,6 +77,12 @@
     return r;
 }
 
+Transform& Transform::operator=(const Transform& other) {
+    mMatrix = other.mMatrix;
+    mType = other.mType;
+    return *this;
+}
+
 const vec3& Transform::operator [] (size_t i) const {
     return mMatrix[i];
 }
@@ -97,10 +97,10 @@
 
 void Transform::reset() {
     mType = IDENTITY;
-    for(int i=0 ; i<3 ; i++) {
+    for(size_t i = 0; i < 3; i++) {
         vec3& v(mMatrix[i]);
-        for (int j=0 ; j<3 ; j++)
-            v[j] = ((i==j) ? 1.0f : 0.0f);
+        for (size_t j = 0; j < 3; j++)
+            v[j] = ((i == j) ? 1.0f : 0.0f);
     }
 }
 
@@ -137,7 +137,7 @@
     Transform H, V, R;
     if (flags & ROT_90) {
         // w & h are inverted when rotating by 90 degrees
-        swap(w, h);
+        std::swap(w, h);
     }
 
     if (flags & FLIP_H) {
@@ -210,15 +210,15 @@
     rb = transform(rb);
 
     if (roundOutwards) {
-        r.left   = floorf(min(lt[0], rt[0], lb[0], rb[0]));
-        r.top    = floorf(min(lt[1], rt[1], lb[1], rb[1]));
-        r.right  = ceilf(max(lt[0], rt[0], lb[0], rb[0]));
-        r.bottom = ceilf(max(lt[1], rt[1], lb[1], rb[1]));
+        r.left   = static_cast<int32_t>(floorf(std::min({lt[0], rt[0], lb[0], rb[0]})));
+        r.top    = static_cast<int32_t>(floorf(std::min({lt[1], rt[1], lb[1], rb[1]})));
+        r.right  = static_cast<int32_t>(ceilf(std::max({lt[0], rt[0], lb[0], rb[0]})));
+        r.bottom = static_cast<int32_t>(ceilf(std::max({lt[1], rt[1], lb[1], rb[1]})));
     } else {
-        r.left   = floorf(min(lt[0], rt[0], lb[0], rb[0]) + 0.5f);
-        r.top    = floorf(min(lt[1], rt[1], lb[1], rb[1]) + 0.5f);
-        r.right  = floorf(max(lt[0], rt[0], lb[0], rb[0]) + 0.5f);
-        r.bottom = floorf(max(lt[1], rt[1], lb[1], rb[1]) + 0.5f);
+        r.left   = static_cast<int32_t>(floorf(std::min({lt[0], rt[0], lb[0], rb[0]}) + 0.5f));
+        r.top    = static_cast<int32_t>(floorf(std::min({lt[1], rt[1], lb[1], rb[1]}) + 0.5f));
+        r.right  = static_cast<int32_t>(floorf(std::max({lt[0], rt[0], lb[0], rb[0]}) + 0.5f));
+        r.bottom = static_cast<int32_t>(floorf(std::max({lt[1], rt[1], lb[1], rb[1]}) + 0.5f));
     }
 
     return r;
@@ -237,10 +237,10 @@
     rb = transform(rb);
 
     FloatRect r;
-    r.left = min(lt[0], rt[0], lb[0], rb[0]);
-    r.top = min(lt[1], rt[1], lb[1], rb[1]);
-    r.right = max(lt[0], rt[0], lb[0], rb[0]);
-    r.bottom = max(lt[1], rt[1], lb[1], rb[1]);
+    r.left = std::min({lt[0], rt[0], lb[0], rb[0]});
+    r.top = std::min({lt[1], rt[1], lb[1], rb[1]});
+    r.right = std::max({lt[0], rt[0], lb[0], rb[0]});
+    r.bottom = std::max({lt[1], rt[1], lb[1], rb[1]});
 
     return r;
 }
@@ -259,8 +259,8 @@
             out.set(transform(reg.bounds()));
         }
     } else {
-        int xpos = floorf(tx() + 0.5f);
-        int ypos = floorf(ty() + 0.5f);
+        int xpos = static_cast<int>(floorf(tx() + 0.5f));
+        int ypos = static_cast<int>(floorf(ty() + 0.5f));
         out = reg.translate(xpos, ypos);
     }
     return out;
@@ -343,7 +343,7 @@
         const float x = M[2][0];
         const float y = M[2][1];
 
-        const float idet = 1.0 / (a*d - b*c);
+        const float idet = 1.0f / (a*d - b*c);
         result.mMatrix[0][0] =  d*idet;
         result.mMatrix[0][1] = -c*idet;
         result.mMatrix[1][0] = -b*idet;
@@ -404,28 +404,13 @@
         type.append("TRANSLATE ");
 
     ALOGD("%s 0x%08x (%s, %s)", name, mType, flags.string(), type.string());
-    ALOGD("%.4f  %.4f  %.4f", m[0][0], m[1][0], m[2][0]);
-    ALOGD("%.4f  %.4f  %.4f", m[0][1], m[1][1], m[2][1]);
-    ALOGD("%.4f  %.4f  %.4f", m[0][2], m[1][2], m[2][2]);
+    ALOGD("%.4f  %.4f  %.4f", static_cast<double>(m[0][0]), static_cast<double>(m[1][0]),
+          static_cast<double>(m[2][0]));
+    ALOGD("%.4f  %.4f  %.4f", static_cast<double>(m[0][1]), static_cast<double>(m[1][1]),
+          static_cast<double>(m[2][1]));
+    ALOGD("%.4f  %.4f  %.4f", static_cast<double>(m[0][2]), static_cast<double>(m[1][2]),
+          static_cast<double>(m[2][2]));
 }
 
-Transform::orientation_flags Transform::fromRotation(ISurfaceComposer::Rotation rotation) {
-    // Convert to surfaceflinger's internal rotation type.
-    switch (rotation) {
-        case ISurfaceComposer::eRotateNone:
-            return Transform::ROT_0;
-        case ISurfaceComposer::eRotate90:
-            return Transform::ROT_90;
-        case ISurfaceComposer::eRotate180:
-            return Transform::ROT_180;
-        case ISurfaceComposer::eRotate270:
-            return Transform::ROT_270;
-        default:
-            ALOGE("Invalid rotation passed to captureScreen(): %d\n", rotation);
-            return Transform::ROT_0;
-    }
-}
-
-// ---------------------------------------------------------------------------
-
-}; // namespace android
+}  // namespace ui
+}  // namespace android
diff --git a/libs/ui/include/ui/DisplayInfo.h b/libs/ui/include/ui/DisplayInfo.h
index 94caf6b..8976d2d 100644
--- a/libs/ui/include/ui/DisplayInfo.h
+++ b/libs/ui/include/ui/DisplayInfo.h
@@ -35,6 +35,8 @@
     bool secure{false};
     nsecs_t appVsyncOffset{0};
     nsecs_t presentationDeadline{0};
+    uint32_t viewportW{0};
+    uint32_t viewportH{0};
 };
 
 /* Display orientations as defined in Surface.java and ISurfaceComposer.h. */
diff --git a/libs/ui/include/ui/FenceTime.h b/libs/ui/include/ui/FenceTime.h
index 871fcf2..a5a1fcb 100644
--- a/libs/ui/include/ui/FenceTime.h
+++ b/libs/ui/include/ui/FenceTime.h
@@ -113,11 +113,6 @@
 
     void signalForTest(nsecs_t signalTime);
 
-    // Override new and delete since this needs 8-byte alignment, which
-    // is not guaranteed on x86.
-    static void* operator new(size_t nbytes) noexcept;
-    static void operator delete(void *p);
-
 private:
     // For tests only. If forceValidForTest is true, then getSignalTime will
     // never return SIGNAL_TIME_INVALID and isValid will always return true.
diff --git a/libs/ui/include/ui/Region.h b/libs/ui/include/ui/Region.h
index 7788452..68b60fc 100644
--- a/libs/ui/include/ui/Region.h
+++ b/libs/ui/include/ui/Region.h
@@ -25,6 +25,8 @@
 #include <ui/Rect.h>
 #include <utils/Flattenable.h>
 
+#include <android-base/macros.h>
+
 namespace android {
 // ---------------------------------------------------------------------------
 
@@ -93,11 +95,11 @@
             Region&     subtractSelf(const Region& rhs, int dx, int dy);
 
             // these translate rhs first
-    const   Region      translate(int dx, int dy) const;
-    const   Region      merge(const Region& rhs, int dx, int dy) const;
-    const   Region      mergeExclusive(const Region& rhs, int dx, int dy) const;
-    const   Region      intersect(const Region& rhs, int dx, int dy) const;
-    const   Region      subtract(const Region& rhs, int dx, int dy) const;
+    const   Region      translate(int dx, int dy) const WARN_UNUSED;
+    const   Region      merge(const Region& rhs, int dx, int dy) const WARN_UNUSED;
+    const   Region      mergeExclusive(const Region& rhs, int dx, int dy) const WARN_UNUSED;
+    const   Region      intersect(const Region& rhs, int dx, int dy) const WARN_UNUSED;
+    const   Region      subtract(const Region& rhs, int dx, int dy) const WARN_UNUSED;
 
     // convenience operators overloads
     inline  const Region      operator | (const Region& rhs) const;
diff --git a/libs/ui/include/ui/Transform.h b/libs/ui/include/ui/Transform.h
new file mode 100644
index 0000000..42dca75
--- /dev/null
+++ b/libs/ui/include/ui/Transform.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_TRANSFORM_H
+#define ANDROID_TRANSFORM_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <hardware/hardware.h>
+#include <math/vec2.h>
+#include <math/vec3.h>
+#include <ui/Point.h>
+#include <ui/Rect.h>
+
+namespace android {
+
+class Region;
+
+namespace ui {
+
+class Transform {
+public:
+    Transform();
+    Transform(const Transform&  other);
+    explicit Transform(uint32_t orientation);
+    ~Transform();
+
+    enum orientation_flags {
+        ROT_0   = 0x00000000,
+        FLIP_H  = HAL_TRANSFORM_FLIP_H,
+        FLIP_V  = HAL_TRANSFORM_FLIP_V,
+        ROT_90  = HAL_TRANSFORM_ROT_90,
+        ROT_180 = FLIP_H|FLIP_V,
+        ROT_270 = ROT_180|ROT_90,
+        ROT_INVALID = 0x80
+    };
+
+    enum type_mask : uint32_t {
+        IDENTITY            = 0,
+        TRANSLATE           = 0x1,
+        ROTATE              = 0x2,
+        SCALE               = 0x4,
+        UNKNOWN             = 0x8
+    };
+
+    // query the transform
+    bool        preserveRects() const;
+    uint32_t    getType() const;
+    uint32_t    getOrientation() const;
+
+    const vec3& operator [] (size_t i) const;  // returns column i
+    float   tx() const;
+    float   ty() const;
+
+    // modify the transform
+    void        reset();
+    void        set(float tx, float ty);
+    void        set(float a, float b, float c, float d);
+    status_t    set(uint32_t flags, float w, float h);
+
+    // transform data
+    Rect    makeBounds(int w, int h) const;
+    vec2    transform(int x, int y) const;
+    Region  transform(const Region& reg) const;
+    Rect    transform(const Rect& bounds,
+                      bool roundOutwards = false) const;
+    FloatRect transform(const FloatRect& bounds) const;
+    Transform& operator = (const Transform& other);
+    Transform operator * (const Transform& rhs) const;
+    // assumes the last row is < 0 , 0 , 1 >
+    vec2 transform(const vec2& v) const;
+    vec3 transform(const vec3& v) const;
+
+    Transform inverse() const;
+
+    // for debugging
+    void dump(const char* name) const;
+
+private:
+    struct mat33 {
+        vec3 v[3];
+        inline const vec3& operator [] (size_t i) const { return v[i]; }
+        inline vec3& operator [] (size_t i) { return v[i]; }
+    };
+
+    enum { UNKNOWN_TYPE = 0x80000000 };
+
+    uint32_t type() const;
+    static bool absIsOne(float f);
+    static bool isZero(float f);
+
+    mat33               mMatrix;
+    mutable uint32_t    mType;
+};
+
+}  // namespace ui
+}  // namespace android
+
+#endif /* ANDROID_TRANSFORM_H */
diff --git a/libs/vr/CleanSpec.mk b/libs/vr/CleanSpec.mk
new file mode 100644
index 0000000..a17c9b2
--- /dev/null
+++ b/libs/vr/CleanSpec.mk
@@ -0,0 +1,52 @@
+# Copyright (C) 2012 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# If you don't need to do a full clean build but would like to touch
+# a file or delete some intermediate files, add a clean step to the end
+# of the list.  These steps will only be run once, if they haven't been
+# run before.
+#
+# E.g.:
+#     $(call add-clean-step, touch -c external/sqlite/sqlite3.h)
+#     $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libz_intermediates)
+#
+# Always use "touch -c" and "rm -f" or "rm -rf" to gracefully deal with
+# files that are missing or have been moved.
+#
+# Use $(PRODUCT_OUT) to get to the "out/target/product/blah/" directory.
+# Use $(OUT_DIR) to refer to the "out" directory.
+#
+# If you need to re-do something that's already mentioned, just copy
+# the command and add it to the bottom of the list.  E.g., if a change
+# that you made last week required touching a file and a change you
+# made today requires touching the same file, just copy the old
+# touch step and add it to the end of the list.
+#
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+
+# For example:
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/AndroidTests_intermediates)
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/core_intermediates)
+#$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
+#$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
+
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+$(call add-clean-step, find $(PRODUCT_OUT) -type f -name "libdvr.so" -print0 | xargs -0 rm -f)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libdvr_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libdvr_intermediates)
diff --git a/libs/vr/libbufferhub/Android.bp b/libs/vr/libbufferhub/Android.bp
index 69b6422..d174d35 100644
--- a/libs/vr/libbufferhub/Android.bp
+++ b/libs/vr/libbufferhub/Android.bp
@@ -13,10 +13,13 @@
 // limitations under the License.
 
 sourceFiles = [
-    "buffer_hub_client.cpp",
+    "buffer_hub_base.cpp",
+    "buffer_hub_metadata.cpp",
     "buffer_hub_rpc.cpp",
+    "consumer_buffer.cpp",
     "detached_buffer.cpp",
     "ion_buffer.cpp",
+    "producer_buffer.cpp",
 ]
 
 localIncludeFiles = [
@@ -66,3 +69,10 @@
     name: "buffer_hub-test",
 }
 
+cc_test {
+    srcs: ["buffer_hub_metadata-test.cpp"],
+    static_libs: ["libbufferhub"],
+    shared_libs: sharedLibraries,
+    header_libs: headerLibraries,
+    name: "buffer_hub_metadata-test",
+}
diff --git a/libs/vr/libbufferhub/buffer_hub-test.cpp b/libs/vr/libbufferhub/buffer_hub-test.cpp
index e247398..11b2211 100644
--- a/libs/vr/libbufferhub/buffer_hub-test.cpp
+++ b/libs/vr/libbufferhub/buffer_hub-test.cpp
@@ -593,7 +593,7 @@
 
   LocalHandle fence;
 
-  EXPECT_EQ(0, p->Post<void>(LocalHandle()));
+  EXPECT_EQ(0, p->Post(LocalHandle()));
   EXPECT_EQ(0, c->Acquire(&fence));
 }
 
@@ -795,8 +795,6 @@
   EXPECT_TRUE(d->IsConnected());
   EXPECT_TRUE(d->IsValid());
 
-  ASSERT_TRUE(d->buffer() != nullptr);
-  EXPECT_EQ(d->buffer()->initCheck(), 0);
   EXPECT_EQ(d->id(), p_id);
 }
 
@@ -808,7 +806,6 @@
 
   EXPECT_FALSE(b1->IsConnected());
   EXPECT_FALSE(b1->IsValid());
-  EXPECT_TRUE(b1->buffer() == nullptr);
 
   // Buffer Creation will fail: user metadata size too large.
   auto b2 = DetachedBuffer::Create(
@@ -817,7 +814,6 @@
 
   EXPECT_FALSE(b2->IsConnected());
   EXPECT_FALSE(b2->IsValid());
-  EXPECT_TRUE(b2->buffer() == nullptr);
 
   // Buffer Creation will fail: user metadata size too large.
   auto b3 = DetachedBuffer::Create(
@@ -827,50 +823,14 @@
 
   EXPECT_FALSE(b3->IsConnected());
   EXPECT_FALSE(b3->IsValid());
-  EXPECT_TRUE(b3->buffer() == nullptr);
 }
 
 TEST_F(LibBufferHubTest, TestCreateDetachedBuffer) {
   auto b1 = DetachedBuffer::Create(kWidth, kHeight, kLayerCount, kFormat,
                                    kUsage, kUserMetadataSize);
-  int b1_id = b1->id();
-
   EXPECT_TRUE(b1->IsConnected());
   EXPECT_TRUE(b1->IsValid());
-  ASSERT_TRUE(b1->buffer() != nullptr);
   EXPECT_NE(b1->id(), 0);
-  EXPECT_EQ(b1->buffer()->initCheck(), 0);
-  EXPECT_FALSE(b1->buffer()->isDetachedBuffer());
-
-  // Takes a standalone GraphicBuffer which still holds on an
-  // PDX::LocalChannelHandle towards BufferHub.
-  sp<GraphicBuffer> g1 = b1->TakeGraphicBuffer();
-  ASSERT_TRUE(g1 != nullptr);
-  EXPECT_TRUE(g1->isDetachedBuffer());
-
-  EXPECT_FALSE(b1->IsConnected());
-  EXPECT_FALSE(b1->IsValid());
-  EXPECT_TRUE(b1->buffer() == nullptr);
-
-  sp<GraphicBuffer> g2 = b1->TakeGraphicBuffer();
-  ASSERT_TRUE(g2 == nullptr);
-
-  auto h1 = g1->takeDetachedBufferHandle();
-  ASSERT_TRUE(h1 != nullptr);
-  ASSERT_TRUE(h1->isValid());
-  EXPECT_FALSE(g1->isDetachedBuffer());
-
-  auto b2 = DetachedBuffer::Import(std::move(h1->handle()));
-  ASSERT_FALSE(h1->isValid());
-  EXPECT_TRUE(b2->IsConnected());
-  EXPECT_TRUE(b2->IsValid());
-
-  ASSERT_TRUE(b2->buffer() != nullptr);
-  EXPECT_EQ(b2->buffer()->initCheck(), 0);
-
-  // The newly created DetachedBuffer should share the original buffer_id.
-  EXPECT_EQ(b2->id(), b1_id);
-  EXPECT_FALSE(b2->buffer()->isDetachedBuffer());
 }
 
 TEST_F(LibBufferHubTest, TestPromoteDetachedBuffer) {
@@ -945,3 +905,46 @@
   EXPECT_EQ(b1_id, p2_id);
   EXPECT_TRUE(IsBufferGained(p2->buffer_state()));
 }
+
+TEST_F(LibBufferHubTest, TestDuplicateDetachedBuffer) {
+  auto b1 = DetachedBuffer::Create(kWidth, kHeight, kLayerCount, kFormat,
+                                   kUsage, kUserMetadataSize);
+  int b1_id = b1->id();
+  EXPECT_TRUE(b1->IsValid());
+
+  auto status_or_handle = b1->Duplicate();
+  EXPECT_TRUE(status_or_handle);
+
+  // The detached buffer should still be valid.
+  EXPECT_TRUE(b1->IsConnected());
+  EXPECT_TRUE(b1->IsValid());
+
+  // Gets the channel handle for the duplicated buffer.
+  LocalChannelHandle h2 = status_or_handle.take();
+  EXPECT_TRUE(h2.valid());
+
+  std::unique_ptr<DetachedBuffer> b2 = DetachedBuffer::Import(std::move(h2));
+  EXPECT_FALSE(h2.valid());
+  ASSERT_TRUE(b2 != nullptr);
+  int b2_id = b2->id();
+
+  // These two buffer instances are based on the same physical buffer under the
+  // hood, so they should share the same id.
+  EXPECT_EQ(b1_id, b2_id);
+  // We use buffer_state_bit() to tell those two instances apart.
+  EXPECT_NE(b1->buffer_state_bit(), b2->buffer_state_bit());
+  EXPECT_NE(b1->buffer_state_bit(), 0ULL);
+  EXPECT_NE(b2->buffer_state_bit(), 0ULL);
+  EXPECT_NE(b1->buffer_state_bit(), kProducerStateBit);
+  EXPECT_NE(b2->buffer_state_bit(), kProducerStateBit);
+
+  // Both buffer instances should be in gained state.
+  EXPECT_TRUE(IsBufferGained(b1->buffer_state()));
+  EXPECT_TRUE(IsBufferGained(b2->buffer_state()));
+
+  // Promote the detached buffer should fail as b1 is no longer the exclusive
+  // owner of the buffer..
+  status_or_handle = b1->Promote();
+  EXPECT_FALSE(status_or_handle.ok());
+  EXPECT_EQ(status_or_handle.error(), EINVAL);
+}
diff --git a/libs/vr/libbufferhub/buffer_hub_base.cpp b/libs/vr/libbufferhub/buffer_hub_base.cpp
new file mode 100644
index 0000000..b2bcda7
--- /dev/null
+++ b/libs/vr/libbufferhub/buffer_hub_base.cpp
@@ -0,0 +1,224 @@
+#include <poll.h>
+#include <sys/epoll.h>
+
+#include <pdx/default_transport/client_channel.h>
+#include <pdx/default_transport/client_channel_factory.h>
+#include <private/dvr/buffer_hub_base.h>
+
+using android::pdx::LocalChannelHandle;
+using android::pdx::LocalHandle;
+using android::pdx::Status;
+using android::pdx::default_transport::ClientChannel;
+using android::pdx::default_transport::ClientChannelFactory;
+
+namespace android {
+namespace dvr {
+
+BufferHubBase::BufferHubBase(LocalChannelHandle channel_handle)
+    : Client{pdx::default_transport::ClientChannel::Create(
+          std::move(channel_handle))},
+      id_(-1),
+      cid_(-1) {}
+BufferHubBase::BufferHubBase(const std::string& endpoint_path)
+    : Client{pdx::default_transport::ClientChannelFactory::Create(
+          endpoint_path)},
+      id_(-1),
+      cid_(-1) {}
+
+BufferHubBase::~BufferHubBase() {
+  if (metadata_header_ != nullptr) {
+    metadata_buffer_.Unlock();
+  }
+}
+
+Status<LocalChannelHandle> BufferHubBase::CreateConsumer() {
+  Status<LocalChannelHandle> status =
+      InvokeRemoteMethod<BufferHubRPC::NewConsumer>();
+  ALOGE_IF(!status,
+           "BufferHub::CreateConsumer: Failed to create consumer channel: %s",
+           status.GetErrorMessage().c_str());
+  return status;
+}
+
+int BufferHubBase::ImportBuffer() {
+  ATRACE_NAME("BufferHubBase::ImportBuffer");
+
+  Status<BufferDescription<LocalHandle>> status =
+      InvokeRemoteMethod<BufferHubRPC::GetBuffer>();
+  if (!status) {
+    ALOGE("BufferHubBase::ImportBuffer: Failed to get buffer: %s",
+          status.GetErrorMessage().c_str());
+    return -status.error();
+  } else if (status.get().id() < 0) {
+    ALOGE("BufferHubBase::ImportBuffer: Received an invalid id!");
+    return -EIO;
+  }
+
+  auto buffer_desc = status.take();
+
+  // Stash the buffer id to replace the value in id_.
+  const int new_id = buffer_desc.id();
+
+  // Import the buffer.
+  IonBuffer ion_buffer;
+  ALOGD_IF(TRACE, "BufferHubBase::ImportBuffer: id=%d.", buffer_desc.id());
+
+  if (const int ret = buffer_desc.ImportBuffer(&ion_buffer))
+    return ret;
+
+  // Import the metadata.
+  IonBuffer metadata_buffer;
+  if (const int ret = buffer_desc.ImportMetadata(&metadata_buffer)) {
+    ALOGE("Failed to import metadata buffer, error=%d", ret);
+    return ret;
+  }
+  size_t metadata_buf_size = metadata_buffer.width();
+  if (metadata_buf_size < BufferHubDefs::kMetadataHeaderSize) {
+    ALOGE("BufferHubBase::ImportBuffer: metadata buffer too small: %zu",
+          metadata_buf_size);
+    return -ENOMEM;
+  }
+
+  // If all imports succee, replace the previous buffer and id.
+  buffer_ = std::move(ion_buffer);
+  metadata_buffer_ = std::move(metadata_buffer);
+  metadata_buf_size_ = metadata_buf_size;
+  user_metadata_size_ = metadata_buf_size_ - BufferHubDefs::kMetadataHeaderSize;
+
+  void* metadata_ptr = nullptr;
+  if (const int ret =
+          metadata_buffer_.Lock(BufferHubDefs::kMetadataUsage, /*x=*/0,
+                                /*y=*/0, metadata_buf_size_,
+                                /*height=*/1, &metadata_ptr)) {
+    ALOGE("BufferHubBase::ImportBuffer: Failed to lock metadata.");
+    return ret;
+  }
+
+  // Set up shared fences.
+  shared_acquire_fence_ = buffer_desc.take_acquire_fence();
+  shared_release_fence_ = buffer_desc.take_release_fence();
+  if (!shared_acquire_fence_ || !shared_release_fence_) {
+    ALOGE("BufferHubBase::ImportBuffer: Failed to import shared fences.");
+    return -EIO;
+  }
+
+  metadata_header_ =
+      reinterpret_cast<BufferHubDefs::MetadataHeader*>(metadata_ptr);
+  if (user_metadata_size_) {
+    user_metadata_ptr_ =
+        reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(metadata_ptr) +
+                                BufferHubDefs::kMetadataHeaderSize);
+  } else {
+    user_metadata_ptr_ = nullptr;
+  }
+
+  id_ = new_id;
+  cid_ = buffer_desc.buffer_cid();
+  buffer_state_bit_ = buffer_desc.buffer_state_bit();
+
+  // Note that here the buffer state is mapped from shared memory as an atomic
+  // object. The std::atomic's constructor will not be called so that the
+  // original value stored in the memory region will be preserved.
+  buffer_state_ = &metadata_header_->buffer_state;
+  ALOGD_IF(TRACE,
+           "BufferHubBase::ImportBuffer: id=%d, buffer_state=%" PRIx64 ".",
+           id(), buffer_state_->load());
+  fence_state_ = &metadata_header_->fence_state;
+  ALOGD_IF(TRACE,
+           "BufferHubBase::ImportBuffer: id=%d, fence_state=%" PRIx64 ".", id(),
+           fence_state_->load());
+
+  return 0;
+}
+
+int BufferHubBase::CheckMetadata(size_t user_metadata_size) const {
+  if (user_metadata_size && !user_metadata_ptr_) {
+    ALOGE("BufferHubBase::CheckMetadata: doesn't support custom metadata.");
+    return -EINVAL;
+  }
+  if (user_metadata_size > user_metadata_size_) {
+    ALOGE("BufferHubBase::CheckMetadata: too big: %zu, maximum: %zu.",
+          user_metadata_size, user_metadata_size_);
+    return -E2BIG;
+  }
+  return 0;
+}
+
+int BufferHubBase::UpdateSharedFence(const LocalHandle& new_fence,
+                                     const LocalHandle& shared_fence) {
+  if (pending_fence_fd_.Get() != new_fence.Get()) {
+    // First, replace the old fd if there was already one. Skipping if the new
+    // one is the same as the old.
+    if (pending_fence_fd_.IsValid()) {
+      const int ret = epoll_ctl(shared_fence.Get(), EPOLL_CTL_DEL,
+                                pending_fence_fd_.Get(), nullptr);
+      ALOGW_IF(ret,
+               "BufferHubBase::UpdateSharedFence: failed to remove old fence "
+               "fd from epoll set, error: %s.",
+               strerror(errno));
+    }
+
+    if (new_fence.IsValid()) {
+      // If ready fence is valid, we put that into the epoll set.
+      epoll_event event;
+      event.events = EPOLLIN;
+      event.data.u64 = buffer_state_bit();
+      pending_fence_fd_ = new_fence.Duplicate();
+      if (epoll_ctl(shared_fence.Get(), EPOLL_CTL_ADD, pending_fence_fd_.Get(),
+                    &event) < 0) {
+        const int error = errno;
+        ALOGE(
+            "BufferHubBase::UpdateSharedFence: failed to add new fence fd "
+            "into epoll set, error: %s.",
+            strerror(error));
+        return -error;
+      }
+      // Set bit in fence state to indicate that there is a fence from this
+      // producer or consumer.
+      fence_state_->fetch_or(buffer_state_bit());
+    } else {
+      // Unset bit in fence state to indicate that there is no fence, so that
+      // when consumer to acquire or producer to acquire, it knows no need to
+      // check fence for this buffer.
+      fence_state_->fetch_and(~buffer_state_bit());
+    }
+  }
+
+  return 0;
+}
+
+int BufferHubBase::Poll(int timeout_ms) {
+  ATRACE_NAME("BufferHubBase::Poll");
+  pollfd p = {event_fd(), POLLIN, 0};
+  return poll(&p, 1, timeout_ms);
+}
+
+int BufferHubBase::Lock(int usage, int x, int y, int width, int height,
+                        void** address) {
+  return buffer_.Lock(usage, x, y, width, height, address);
+}
+
+int BufferHubBase::Unlock() { return buffer_.Unlock(); }
+
+int BufferHubBase::GetBlobReadWritePointer(size_t size, void** addr) {
+  int width = static_cast<int>(size);
+  int height = 1;
+  int ret = Lock(usage(), 0, 0, width, height, addr);
+  if (ret == 0)
+    Unlock();
+  return ret;
+}
+
+int BufferHubBase::GetBlobReadOnlyPointer(size_t size, void** addr) {
+  return GetBlobReadWritePointer(size, addr);
+}
+
+void BufferHubBase::GetBlobFds(int* fds, size_t* fds_count,
+                               size_t max_fds_count) const {
+  size_t numFds = static_cast<size_t>(native_handle()->numFds);
+  *fds_count = std::min(max_fds_count, numFds);
+  std::copy(native_handle()->data, native_handle()->data + *fds_count, fds);
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libbufferhub/buffer_hub_client.cpp b/libs/vr/libbufferhub/buffer_hub_client.cpp
deleted file mode 100644
index 159f2bd..0000000
--- a/libs/vr/libbufferhub/buffer_hub_client.cpp
+++ /dev/null
@@ -1,650 +0,0 @@
-#include <private/dvr/buffer_hub_client.h>
-
-#include <log/log.h>
-#include <poll.h>
-#include <sys/epoll.h>
-#include <utils/Trace.h>
-
-#include <mutex>
-
-#include <pdx/default_transport/client_channel.h>
-#include <pdx/default_transport/client_channel_factory.h>
-
-#include "include/private/dvr/bufferhub_rpc.h"
-
-using android::pdx::LocalChannelHandle;
-using android::pdx::LocalHandle;
-using android::pdx::Status;
-using android::pdx::default_transport::ClientChannel;
-using android::pdx::default_transport::ClientChannelFactory;
-
-namespace android {
-namespace dvr {
-
-BufferHubClient::BufferHubClient()
-    : Client(ClientChannelFactory::Create(BufferHubRPC::kClientPath)) {}
-
-BufferHubClient::BufferHubClient(LocalChannelHandle channel_handle)
-    : Client(ClientChannel::Create(std::move(channel_handle))) {}
-
-bool BufferHubClient::IsValid() const {
-  return IsConnected() && GetChannelHandle().valid();
-}
-
-LocalChannelHandle BufferHubClient::TakeChannelHandle() {
-  if (IsConnected()) {
-    return std::move(GetChannelHandle());
-  } else {
-    return {};
-  }
-}
-
-BufferHubBuffer::BufferHubBuffer(LocalChannelHandle channel_handle)
-    : Client{pdx::default_transport::ClientChannel::Create(
-          std::move(channel_handle))},
-      id_(-1) {}
-BufferHubBuffer::BufferHubBuffer(const std::string& endpoint_path)
-    : Client{pdx::default_transport::ClientChannelFactory::Create(
-          endpoint_path)},
-      id_(-1) {}
-
-BufferHubBuffer::~BufferHubBuffer() {
-  if (metadata_header_ != nullptr) {
-    metadata_buffer_.Unlock();
-  }
-}
-
-Status<LocalChannelHandle> BufferHubBuffer::CreateConsumer() {
-  Status<LocalChannelHandle> status =
-      InvokeRemoteMethod<BufferHubRPC::NewConsumer>();
-  ALOGE_IF(!status,
-           "BufferHub::CreateConsumer: Failed to create consumer channel: %s",
-           status.GetErrorMessage().c_str());
-  return status;
-}
-
-int BufferHubBuffer::ImportBuffer() {
-  ATRACE_NAME("BufferHubBuffer::ImportBuffer");
-
-  Status<BufferDescription<LocalHandle>> status =
-      InvokeRemoteMethod<BufferHubRPC::GetBuffer>();
-  if (!status) {
-    ALOGE("BufferHubBuffer::ImportBuffer: Failed to get buffer: %s",
-          status.GetErrorMessage().c_str());
-    return -status.error();
-  } else if (status.get().id() < 0) {
-    ALOGE("BufferHubBuffer::ImportBuffer: Received an invalid id!");
-    return -EIO;
-  }
-
-  auto buffer_desc = status.take();
-
-  // Stash the buffer id to replace the value in id_.
-  const int new_id = buffer_desc.id();
-
-  // Import the buffer.
-  IonBuffer ion_buffer;
-  ALOGD_IF(TRACE, "BufferHubBuffer::ImportBuffer: id=%d.", buffer_desc.id());
-
-  if (const int ret = buffer_desc.ImportBuffer(&ion_buffer))
-    return ret;
-
-  // Import the metadata.
-  IonBuffer metadata_buffer;
-  if (const int ret = buffer_desc.ImportMetadata(&metadata_buffer)) {
-    ALOGE("Failed to import metadata buffer, error=%d", ret);
-    return ret;
-  }
-  size_t metadata_buf_size = metadata_buffer.width();
-  if (metadata_buf_size < BufferHubDefs::kMetadataHeaderSize) {
-    ALOGE("BufferHubBuffer::ImportBuffer: metadata buffer too small: %zu",
-          metadata_buf_size);
-    return -ENOMEM;
-  }
-
-  // If all imports succee, replace the previous buffer and id.
-  buffer_ = std::move(ion_buffer);
-  metadata_buffer_ = std::move(metadata_buffer);
-  metadata_buf_size_ = metadata_buf_size;
-  user_metadata_size_ = metadata_buf_size_ - BufferHubDefs::kMetadataHeaderSize;
-
-  void* metadata_ptr = nullptr;
-  if (const int ret =
-          metadata_buffer_.Lock(BufferHubDefs::kMetadataUsage, /*x=*/0,
-                                /*y=*/0, metadata_buf_size_,
-                                /*height=*/1, &metadata_ptr)) {
-    ALOGE("BufferHubBuffer::ImportBuffer: Failed to lock metadata.");
-    return ret;
-  }
-
-  // Set up shared fences.
-  shared_acquire_fence_ = buffer_desc.take_acquire_fence();
-  shared_release_fence_ = buffer_desc.take_release_fence();
-  if (!shared_acquire_fence_ || !shared_release_fence_) {
-    ALOGE("BufferHubBuffer::ImportBuffer: Failed to import shared fences.");
-    return -EIO;
-  }
-
-  metadata_header_ =
-      reinterpret_cast<BufferHubDefs::MetadataHeader*>(metadata_ptr);
-  if (user_metadata_size_) {
-    user_metadata_ptr_ =
-        reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(metadata_ptr) +
-                                BufferHubDefs::kMetadataHeaderSize);
-  } else {
-    user_metadata_ptr_ = nullptr;
-  }
-
-  id_ = new_id;
-  buffer_state_bit_ = buffer_desc.buffer_state_bit();
-
-  // Note that here the buffer state is mapped from shared memory as an atomic
-  // object. The std::atomic's constructor will not be called so that the
-  // original value stored in the memory region will be preserved.
-  buffer_state_ = &metadata_header_->buffer_state;
-  ALOGD_IF(TRACE,
-           "BufferHubBuffer::ImportBuffer: id=%d, buffer_state=%" PRIx64 ".",
-           id(), buffer_state_->load());
-  fence_state_ = &metadata_header_->fence_state;
-  ALOGD_IF(TRACE,
-           "BufferHubBuffer::ImportBuffer: id=%d, fence_state=%" PRIx64 ".",
-           id(), fence_state_->load());
-
-  return 0;
-}
-
-inline int BufferHubBuffer::CheckMetadata(size_t user_metadata_size) const {
-  if (user_metadata_size && !user_metadata_ptr_) {
-    ALOGE("BufferHubBuffer::CheckMetadata: doesn't support custom metadata.");
-    return -EINVAL;
-  }
-  if (user_metadata_size > user_metadata_size_) {
-    ALOGE("BufferHubBuffer::CheckMetadata: too big: %zu, maximum: %zu.",
-          user_metadata_size, user_metadata_size_);
-    return -E2BIG;
-  }
-  return 0;
-}
-
-int BufferHubBuffer::UpdateSharedFence(const LocalHandle& new_fence,
-                                       const LocalHandle& shared_fence) {
-  if (pending_fence_fd_.Get() != new_fence.Get()) {
-    // First, replace the old fd if there was already one. Skipping if the new
-    // one is the same as the old.
-    if (pending_fence_fd_.IsValid()) {
-      const int ret = epoll_ctl(shared_fence.Get(), EPOLL_CTL_DEL,
-                                pending_fence_fd_.Get(), nullptr);
-      ALOGW_IF(ret,
-               "BufferHubBuffer::UpdateSharedFence: failed to remove old fence "
-               "fd from epoll set, error: %s.",
-               strerror(errno));
-    }
-
-    if (new_fence.IsValid()) {
-      // If ready fence is valid, we put that into the epoll set.
-      epoll_event event;
-      event.events = EPOLLIN;
-      event.data.u64 = buffer_state_bit();
-      pending_fence_fd_ = new_fence.Duplicate();
-      if (epoll_ctl(shared_fence.Get(), EPOLL_CTL_ADD, pending_fence_fd_.Get(),
-                    &event) < 0) {
-        const int error = errno;
-        ALOGE(
-            "BufferHubBuffer::UpdateSharedFence: failed to add new fence fd "
-            "into epoll set, error: %s.",
-            strerror(error));
-        return -error;
-      }
-      // Set bit in fence state to indicate that there is a fence from this
-      // producer or consumer.
-      fence_state_->fetch_or(buffer_state_bit());
-    } else {
-      // Unset bit in fence state to indicate that there is no fence, so that
-      // when consumer to acquire or producer to acquire, it knows no need to
-      // check fence for this buffer.
-      fence_state_->fetch_and(~buffer_state_bit());
-    }
-  }
-
-  return 0;
-}
-
-int BufferHubBuffer::Poll(int timeout_ms) {
-  ATRACE_NAME("BufferHubBuffer::Poll");
-  pollfd p = {event_fd(), POLLIN, 0};
-  return poll(&p, 1, timeout_ms);
-}
-
-int BufferHubBuffer::Lock(int usage, int x, int y, int width, int height,
-                          void** address) {
-  return buffer_.Lock(usage, x, y, width, height, address);
-}
-
-int BufferHubBuffer::Unlock() { return buffer_.Unlock(); }
-
-int BufferHubBuffer::GetBlobReadWritePointer(size_t size, void** addr) {
-  int width = static_cast<int>(size);
-  int height = 1;
-  int ret = Lock(usage(), 0, 0, width, height, addr);
-  if (ret == 0)
-    Unlock();
-  return ret;
-}
-
-int BufferHubBuffer::GetBlobReadOnlyPointer(size_t size, void** addr) {
-  return GetBlobReadWritePointer(size, addr);
-}
-
-void BufferHubBuffer::GetBlobFds(int* fds, size_t* fds_count,
-                                 size_t max_fds_count) const {
-  size_t numFds = static_cast<size_t>(native_handle()->numFds);
-  *fds_count = std::min(max_fds_count, numFds);
-  std::copy(native_handle()->data, native_handle()->data + *fds_count, fds);
-}
-
-BufferConsumer::BufferConsumer(LocalChannelHandle channel)
-    : BASE(std::move(channel)) {
-  const int ret = ImportBuffer();
-  if (ret < 0) {
-    ALOGE("BufferConsumer::BufferConsumer: Failed to import buffer: %s",
-          strerror(-ret));
-    Close(ret);
-  }
-}
-
-std::unique_ptr<BufferConsumer> BufferConsumer::Import(
-    LocalChannelHandle channel) {
-  ATRACE_NAME("BufferConsumer::Import");
-  ALOGD_IF(TRACE, "BufferConsumer::Import: channel=%d", channel.value());
-  return BufferConsumer::Create(std::move(channel));
-}
-
-std::unique_ptr<BufferConsumer> BufferConsumer::Import(
-    Status<LocalChannelHandle> status) {
-  return Import(status ? status.take()
-                       : LocalChannelHandle{nullptr, -status.error()});
-}
-
-int BufferConsumer::LocalAcquire(DvrNativeBufferMetadata* out_meta,
-                                 LocalHandle* out_fence) {
-  if (!out_meta)
-    return -EINVAL;
-
-  // Only check producer bit and this consumer buffer's particular consumer bit.
-  // The buffer is can be acquired iff: 1) producer bit is set; 2) consumer bit
-  // is not set.
-  uint64_t buffer_state = buffer_state_->load();
-  if (!BufferHubDefs::IsBufferPosted(buffer_state, buffer_state_bit())) {
-    ALOGE("BufferConsumer::LocalAcquire: not posted, id=%d state=%" PRIx64
-          " buffer_state_bit=%" PRIx64 ".",
-          id(), buffer_state, buffer_state_bit());
-    return -EBUSY;
-  }
-
-  // Copy the canonical metadata.
-  void* metadata_ptr = reinterpret_cast<void*>(&metadata_header_->metadata);
-  memcpy(out_meta, metadata_ptr, sizeof(DvrNativeBufferMetadata));
-  // Fill in the user_metadata_ptr in address space of the local process.
-  if (out_meta->user_metadata_size) {
-    out_meta->user_metadata_ptr =
-        reinterpret_cast<uint64_t>(user_metadata_ptr_);
-  } else {
-    out_meta->user_metadata_ptr = 0;
-  }
-
-  uint64_t fence_state = fence_state_->load();
-  // If there is an acquire fence from producer, we need to return it.
-  if (fence_state & BufferHubDefs::kProducerStateBit) {
-    *out_fence = shared_acquire_fence_.Duplicate();
-  }
-
-  // Set the consumer bit unique to this consumer.
-  BufferHubDefs::ModifyBufferState(buffer_state_, 0ULL, buffer_state_bit());
-  return 0;
-}
-
-int BufferConsumer::Acquire(LocalHandle* ready_fence) {
-  return Acquire(ready_fence, nullptr, 0);
-}
-
-int BufferConsumer::Acquire(LocalHandle* ready_fence, void* meta,
-                            size_t user_metadata_size) {
-  ATRACE_NAME("BufferConsumer::Acquire");
-
-  if (const int error = CheckMetadata(user_metadata_size))
-    return error;
-
-  DvrNativeBufferMetadata canonical_meta;
-  if (const int error = LocalAcquire(&canonical_meta, ready_fence))
-    return error;
-
-  if (meta && user_metadata_size) {
-    void* metadata_src =
-        reinterpret_cast<void*>(canonical_meta.user_metadata_ptr);
-    if (metadata_src) {
-      memcpy(meta, metadata_src, user_metadata_size);
-    } else {
-      ALOGW("BufferConsumer::Acquire: no user-defined metadata.");
-    }
-  }
-
-  auto status = InvokeRemoteMethod<BufferHubRPC::ConsumerAcquire>();
-  if (!status)
-    return -status.error();
-  return 0;
-}
-
-int BufferConsumer::AcquireAsync(DvrNativeBufferMetadata* out_meta,
-                                 LocalHandle* out_fence) {
-  ATRACE_NAME("BufferConsumer::AcquireAsync");
-
-  if (const int error = LocalAcquire(out_meta, out_fence))
-    return error;
-
-  auto status = SendImpulse(BufferHubRPC::ConsumerAcquire::Opcode);
-  if (!status)
-    return -status.error();
-  return 0;
-}
-
-int BufferConsumer::LocalRelease(const DvrNativeBufferMetadata* meta,
-                                 const LocalHandle& release_fence) {
-  if (const int error = CheckMetadata(meta->user_metadata_size))
-    return error;
-
-  // Check invalid state transition.
-  uint64_t buffer_state = buffer_state_->load();
-  if (!BufferHubDefs::IsBufferAcquired(buffer_state)) {
-    ALOGE("BufferConsumer::LocalRelease: not acquired id=%d state=%" PRIx64 ".",
-          id(), buffer_state);
-    return -EBUSY;
-  }
-
-  // On release, only the user requested metadata is copied back into the shared
-  // memory for metadata. Since there are multiple consumers, it doesn't make
-  // sense to send the canonical metadata back to the producer. However, one of
-  // the consumer can still choose to write up to user_metadata_size bytes of
-  // data into user_metadata_ptr.
-  if (meta->user_metadata_ptr && meta->user_metadata_size) {
-    void* metadata_src = reinterpret_cast<void*>(meta->user_metadata_ptr);
-    memcpy(user_metadata_ptr_, metadata_src, meta->user_metadata_size);
-  }
-
-  // Send out the release fence through the shared epoll fd. Note that during
-  // releasing the producer is not expected to be polling on the fence.
-  if (const int error = UpdateSharedFence(release_fence, shared_release_fence_))
-    return error;
-
-  // For release operation, the client don't need to change the state as it's
-  // bufferhubd's job to flip the produer bit once all consumers are released.
-  return 0;
-}
-
-int BufferConsumer::Release(const LocalHandle& release_fence) {
-  ATRACE_NAME("BufferConsumer::Release");
-
-  DvrNativeBufferMetadata meta;
-  if (const int error = LocalRelease(&meta, release_fence))
-    return error;
-
-  return ReturnStatusOrError(InvokeRemoteMethod<BufferHubRPC::ConsumerRelease>(
-      BorrowedFence(release_fence.Borrow())));
-}
-
-int BufferConsumer::ReleaseAsync() {
-  DvrNativeBufferMetadata meta;
-  return ReleaseAsync(&meta, LocalHandle());
-}
-
-int BufferConsumer::ReleaseAsync(const DvrNativeBufferMetadata* meta,
-                                 const LocalHandle& release_fence) {
-  ATRACE_NAME("BufferConsumer::ReleaseAsync");
-
-  if (const int error = LocalRelease(meta, release_fence))
-    return error;
-
-  return ReturnStatusOrError(
-      SendImpulse(BufferHubRPC::ConsumerRelease::Opcode));
-}
-
-int BufferConsumer::Discard() { return Release(LocalHandle()); }
-
-int BufferConsumer::SetIgnore(bool ignore) {
-  return ReturnStatusOrError(
-      InvokeRemoteMethod<BufferHubRPC::ConsumerSetIgnore>(ignore));
-}
-
-BufferProducer::BufferProducer(uint32_t width, uint32_t height, uint32_t format,
-                               uint64_t usage, size_t user_metadata_size)
-    : BASE(BufferHubRPC::kClientPath) {
-  ATRACE_NAME("BufferProducer::BufferProducer");
-  ALOGD_IF(TRACE,
-           "BufferProducer::BufferProducer: fd=%d width=%u height=%u format=%u "
-           "usage=%" PRIx64 " user_metadata_size=%zu",
-           event_fd(), width, height, format, usage, user_metadata_size);
-
-  auto status = InvokeRemoteMethod<BufferHubRPC::CreateBuffer>(
-      width, height, format, usage, user_metadata_size);
-  if (!status) {
-    ALOGE(
-        "BufferProducer::BufferProducer: Failed to create producer buffer: %s",
-        status.GetErrorMessage().c_str());
-    Close(-status.error());
-    return;
-  }
-
-  const int ret = ImportBuffer();
-  if (ret < 0) {
-    ALOGE(
-        "BufferProducer::BufferProducer: Failed to import producer buffer: %s",
-        strerror(-ret));
-    Close(ret);
-  }
-}
-
-BufferProducer::BufferProducer(uint64_t usage, size_t size)
-    : BASE(BufferHubRPC::kClientPath) {
-  ATRACE_NAME("BufferProducer::BufferProducer");
-  ALOGD_IF(TRACE, "BufferProducer::BufferProducer: usage=%" PRIx64 " size=%zu",
-           usage, size);
-  const int width = static_cast<int>(size);
-  const int height = 1;
-  const int format = HAL_PIXEL_FORMAT_BLOB;
-  const size_t user_metadata_size = 0;
-
-  auto status = InvokeRemoteMethod<BufferHubRPC::CreateBuffer>(
-      width, height, format, usage, user_metadata_size);
-  if (!status) {
-    ALOGE("BufferProducer::BufferProducer: Failed to create blob: %s",
-          status.GetErrorMessage().c_str());
-    Close(-status.error());
-    return;
-  }
-
-  const int ret = ImportBuffer();
-  if (ret < 0) {
-    ALOGE(
-        "BufferProducer::BufferProducer: Failed to import producer buffer: %s",
-        strerror(-ret));
-    Close(ret);
-  }
-}
-
-BufferProducer::BufferProducer(LocalChannelHandle channel)
-    : BASE(std::move(channel)) {
-  const int ret = ImportBuffer();
-  if (ret < 0) {
-    ALOGE(
-        "BufferProducer::BufferProducer: Failed to import producer buffer: %s",
-        strerror(-ret));
-    Close(ret);
-  }
-}
-
-int BufferProducer::LocalPost(const DvrNativeBufferMetadata* meta,
-                              const LocalHandle& ready_fence) {
-  if (const int error = CheckMetadata(meta->user_metadata_size))
-    return error;
-
-  // Check invalid state transition.
-  uint64_t buffer_state = buffer_state_->load();
-  if (!BufferHubDefs::IsBufferGained(buffer_state)) {
-    ALOGE("BufferProducer::LocalPost: not gained, id=%d state=%" PRIx64 ".",
-          id(), buffer_state);
-    return -EBUSY;
-  }
-
-  // Copy the canonical metadata.
-  void* metadata_ptr = reinterpret_cast<void*>(&metadata_header_->metadata);
-  memcpy(metadata_ptr, meta, sizeof(DvrNativeBufferMetadata));
-  // Copy extra user requested metadata.
-  if (meta->user_metadata_ptr && meta->user_metadata_size) {
-    void* metadata_src = reinterpret_cast<void*>(meta->user_metadata_ptr);
-    memcpy(user_metadata_ptr_, metadata_src, meta->user_metadata_size);
-  }
-
-  // Send out the acquire fence through the shared epoll fd. Note that during
-  // posting no consumer is not expected to be polling on the fence.
-  if (const int error = UpdateSharedFence(ready_fence, shared_acquire_fence_))
-    return error;
-
-  // Set the producer bit atomically to transit into posted state.
-  BufferHubDefs::ModifyBufferState(buffer_state_, 0ULL,
-                                   BufferHubDefs::kProducerStateBit);
-  return 0;
-}
-
-int BufferProducer::Post(const LocalHandle& ready_fence, const void* meta,
-                         size_t user_metadata_size) {
-  ATRACE_NAME("BufferProducer::Post");
-
-  // Populate cononical metadata for posting.
-  DvrNativeBufferMetadata canonical_meta;
-  canonical_meta.user_metadata_ptr = reinterpret_cast<uint64_t>(meta);
-  canonical_meta.user_metadata_size = user_metadata_size;
-
-  if (const int error = LocalPost(&canonical_meta, ready_fence))
-    return error;
-
-  return ReturnStatusOrError(InvokeRemoteMethod<BufferHubRPC::ProducerPost>(
-      BorrowedFence(ready_fence.Borrow())));
-}
-
-int BufferProducer::PostAsync(const DvrNativeBufferMetadata* meta,
-                              const LocalHandle& ready_fence) {
-  ATRACE_NAME("BufferProducer::PostAsync");
-
-  if (const int error = LocalPost(meta, ready_fence))
-    return error;
-
-  return ReturnStatusOrError(SendImpulse(BufferHubRPC::ProducerPost::Opcode));
-}
-
-int BufferProducer::LocalGain(DvrNativeBufferMetadata* out_meta,
-                              LocalHandle* out_fence) {
-  uint64_t buffer_state = buffer_state_->load();
-  ALOGD_IF(TRACE, "BufferProducer::LocalGain: buffer=%d, state=%" PRIx64 ".",
-           id(), buffer_state);
-
-  if (!out_meta)
-    return -EINVAL;
-
-  if (!BufferHubDefs::IsBufferReleased(buffer_state)) {
-    if (BufferHubDefs::IsBufferGained(buffer_state)) {
-      // We don't want to log error when gaining a newly allocated
-      // buffer.
-      ALOGI("BufferProducer::LocalGain: already gained id=%d.", id());
-      return -EALREADY;
-    }
-    ALOGE("BufferProducer::LocalGain: not released id=%d state=%" PRIx64 ".",
-          id(), buffer_state);
-    return -EBUSY;
-  }
-
-  // Canonical metadata is undefined on Gain. Except for user_metadata and
-  // release_fence_mask. Fill in the user_metadata_ptr in address space of the
-  // local process.
-  if (metadata_header_->metadata.user_metadata_size && user_metadata_ptr_) {
-    out_meta->user_metadata_size =
-        metadata_header_->metadata.user_metadata_size;
-    out_meta->user_metadata_ptr =
-        reinterpret_cast<uint64_t>(user_metadata_ptr_);
-  } else {
-    out_meta->user_metadata_size = 0;
-    out_meta->user_metadata_ptr = 0;
-  }
-
-  uint64_t fence_state = fence_state_->load();
-  // If there is an release fence from consumer, we need to return it.
-  if (fence_state & BufferHubDefs::kConsumerStateMask) {
-    *out_fence = shared_release_fence_.Duplicate();
-    out_meta->release_fence_mask =
-        fence_state & BufferHubDefs::kConsumerStateMask;
-  }
-
-  // Clear out all bits and the buffer is now back to gained state.
-  buffer_state_->store(0ULL);
-  return 0;
-}
-
-int BufferProducer::Gain(LocalHandle* release_fence) {
-  ATRACE_NAME("BufferProducer::Gain");
-
-  DvrNativeBufferMetadata meta;
-  if (const int error = LocalGain(&meta, release_fence))
-    return error;
-
-  auto status = InvokeRemoteMethod<BufferHubRPC::ProducerGain>();
-  if (!status)
-    return -status.error();
-  return 0;
-}
-
-int BufferProducer::GainAsync(DvrNativeBufferMetadata* out_meta,
-                              LocalHandle* release_fence) {
-  ATRACE_NAME("BufferProducer::GainAsync");
-
-  if (const int error = LocalGain(out_meta, release_fence))
-    return error;
-
-  return ReturnStatusOrError(SendImpulse(BufferHubRPC::ProducerGain::Opcode));
-}
-
-int BufferProducer::GainAsync() {
-  DvrNativeBufferMetadata meta;
-  LocalHandle fence;
-  return GainAsync(&meta, &fence);
-}
-
-std::unique_ptr<BufferProducer> BufferProducer::Import(
-    LocalChannelHandle channel) {
-  ALOGD_IF(TRACE, "BufferProducer::Import: channel=%d", channel.value());
-  return BufferProducer::Create(std::move(channel));
-}
-
-std::unique_ptr<BufferProducer> BufferProducer::Import(
-    Status<LocalChannelHandle> status) {
-  return Import(status ? status.take()
-                       : LocalChannelHandle{nullptr, -status.error()});
-}
-
-Status<LocalChannelHandle> BufferProducer::Detach() {
-  uint64_t buffer_state = buffer_state_->load();
-  if (!BufferHubDefs::IsBufferGained(buffer_state)) {
-    // Can only detach a BufferProducer when it's in gained state.
-    ALOGW("BufferProducer::Detach: The buffer (id=%d, state=0x%" PRIx64
-          ") is not in gained state.",
-          id(), buffer_state);
-    return {};
-  }
-
-  Status<LocalChannelHandle> status =
-      InvokeRemoteMethod<BufferHubRPC::ProducerBufferDetach>();
-  ALOGE_IF(!status,
-           "BufferProducer::Detach: Failed to detach buffer (id=%d): %s.", id(),
-           status.GetErrorMessage().c_str());
-  return status;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libbufferhub/buffer_hub_metadata-test.cpp b/libs/vr/libbufferhub/buffer_hub_metadata-test.cpp
new file mode 100644
index 0000000..8c1c01c
--- /dev/null
+++ b/libs/vr/libbufferhub/buffer_hub_metadata-test.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+#include <private/dvr/buffer_hub_metadata.h>
+
+using android::dvr::BufferHubDefs::IsBufferGained;
+
+namespace android {
+namespace dvr {
+
+constexpr size_t kEmptyUserMetadataSize = 0;
+
+class BufferHubMetadataTest : public ::testing::Test {};
+
+TEST_F(BufferHubMetadataTest, Create_UserMetdataSizeTooBig) {
+  BufferHubMetadata m1 =
+      BufferHubMetadata::Create(std::numeric_limits<uint32_t>::max());
+  EXPECT_FALSE(m1.IsValid());
+}
+
+TEST_F(BufferHubMetadataTest, Create_Success) {
+  BufferHubMetadata m1 = BufferHubMetadata::Create(kEmptyUserMetadataSize);
+  EXPECT_TRUE(m1.IsValid());
+  EXPECT_NE(m1.metadata_header(), nullptr);
+}
+
+TEST_F(BufferHubMetadataTest, Import_Success) {
+  BufferHubMetadata m1 = BufferHubMetadata::Create(kEmptyUserMetadataSize);
+  EXPECT_TRUE(m1.IsValid());
+  EXPECT_NE(m1.metadata_header(), nullptr);
+
+  pdx::LocalHandle h2 = m1.ashmem_handle().Duplicate();
+  EXPECT_TRUE(h2.IsValid());
+
+  BufferHubMetadata m2 = BufferHubMetadata::Import(std::move(h2));
+  EXPECT_FALSE(h2.IsValid());
+  EXPECT_TRUE(m1.IsValid());
+  BufferHubDefs::MetadataHeader* mh1 = m1.metadata_header();
+  EXPECT_NE(mh1, nullptr);
+
+  // TODO(b/111976433): Update this test once BufferHub state machine gets
+  // updated. In the old model, buffer starts in the gained state (i.e.
+  // valued 0). In the new model, buffer states in the released state.
+  EXPECT_TRUE(IsBufferGained(mh1->fence_state.load()));
+
+  EXPECT_TRUE(m2.IsValid());
+  BufferHubDefs::MetadataHeader* mh2 = m2.metadata_header();
+  EXPECT_NE(mh2, nullptr);
+
+  // TODO(b/111976433): Update this test once BufferHub state machine gets
+  // updated. In the old model, buffer starts in the gained state (i.e.
+  // valued 0). In the new model, buffer states in the released state.
+  EXPECT_TRUE(IsBufferGained(mh2->fence_state.load()));
+}
+
+TEST_F(BufferHubMetadataTest, MoveMetadataInvalidatesOldOne) {
+  BufferHubMetadata m1 = BufferHubMetadata::Create(sizeof(int));
+  EXPECT_TRUE(m1.IsValid());
+  EXPECT_NE(m1.metadata_header(), nullptr);
+  EXPECT_TRUE(m1.ashmem_handle().IsValid());
+  EXPECT_EQ(m1.user_metadata_size(), sizeof(int));
+
+  BufferHubMetadata m2 = std::move(m1);
+
+  // After the move, the metadata header (a raw pointer) should be reset in the
+  // older buffer.
+  EXPECT_EQ(m1.metadata_header(), nullptr);
+  EXPECT_NE(m2.metadata_header(), nullptr);
+
+  EXPECT_FALSE(m1.ashmem_handle().IsValid());
+  EXPECT_TRUE(m2.ashmem_handle().IsValid());
+
+  EXPECT_EQ(m1.user_metadata_size(), 0U);
+  EXPECT_EQ(m2.user_metadata_size(), sizeof(int));
+
+  BufferHubMetadata m3{std::move(m2)};
+
+  // After the move, the metadata header (a raw pointer) should be reset in the
+  // older buffer.
+  EXPECT_EQ(m2.metadata_header(), nullptr);
+  EXPECT_NE(m3.metadata_header(), nullptr);
+
+  EXPECT_FALSE(m2.ashmem_handle().IsValid());
+  EXPECT_TRUE(m3.ashmem_handle().IsValid());
+
+  EXPECT_EQ(m2.user_metadata_size(), 0U);
+  EXPECT_EQ(m3.user_metadata_size(), sizeof(int));
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libbufferhub/buffer_hub_metadata.cpp b/libs/vr/libbufferhub/buffer_hub_metadata.cpp
new file mode 100644
index 0000000..8243fc5
--- /dev/null
+++ b/libs/vr/libbufferhub/buffer_hub_metadata.cpp
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <sys/mman.h>
+
+#include <cutils/ashmem.h>
+#include <log/log.h>
+#include <private/dvr/buffer_hub_metadata.h>
+
+namespace android {
+namespace dvr {
+
+namespace {
+
+static const int kAshmemProt = PROT_READ | PROT_WRITE;
+
+}  // namespace
+
+using BufferHubDefs::kMetadataHeaderSize;
+using BufferHubDefs::MetadataHeader;
+
+/* static */
+BufferHubMetadata BufferHubMetadata::Create(size_t user_metadata_size) {
+  // The size the of metadata buffer is used as the "width" parameter during
+  // allocation. Thus it cannot overflow uint32_t.
+  if (user_metadata_size >=
+      (std::numeric_limits<uint32_t>::max() - kMetadataHeaderSize)) {
+    ALOGE("BufferHubMetadata::Create: metadata size too big: %zu.",
+          user_metadata_size);
+    return {};
+  }
+
+  const size_t metadata_size = user_metadata_size + kMetadataHeaderSize;
+  int fd = ashmem_create_region(/*name=*/"BufferHubMetadata", metadata_size);
+  if (fd < 0) {
+    ALOGE("BufferHubMetadata::Create: failed to create ashmem region.");
+    return {};
+  }
+
+  // Hand over the ownership of the fd to a pdx::LocalHandle immediately after
+  // the successful return of ashmem_create_region. The ashmem_handle is going
+  // to own the fd and to prevent fd leaks during error handling.
+  pdx::LocalHandle ashmem_handle{fd};
+
+  if (ashmem_set_prot_region(ashmem_handle.Get(), kAshmemProt) != 0) {
+    ALOGE("BufferHubMetadata::Create: failed to set protect region.");
+    return {};
+  }
+
+  return BufferHubMetadata::Import(std::move(ashmem_handle));
+}
+
+/* static */
+BufferHubMetadata BufferHubMetadata::Import(pdx::LocalHandle ashmem_handle) {
+  if (!ashmem_valid(ashmem_handle.Get())) {
+    ALOGE("BufferHubMetadata::Import: invalid ashmem fd.");
+    return {};
+  }
+
+  size_t metadata_size = ashmem_get_size_region(ashmem_handle.Get());
+  size_t user_metadata_size = metadata_size - kMetadataHeaderSize;
+
+  auto metadata_header = static_cast<MetadataHeader*>(
+      mmap(nullptr, metadata_size, kAshmemProt, MAP_SHARED, ashmem_handle.Get(),
+           /*offset=*/0));
+  if (metadata_header == nullptr) {
+    ALOGE("BufferHubMetadata::Import: failed to map region.");
+    return {};
+  }
+
+  return BufferHubMetadata(user_metadata_size, std::move(ashmem_handle),
+                           metadata_header);
+}
+
+BufferHubMetadata::BufferHubMetadata(size_t user_metadata_size,
+                                     pdx::LocalHandle ashmem_handle,
+                                     MetadataHeader* metadata_header)
+    : user_metadata_size_(user_metadata_size),
+      ashmem_handle_(std::move(ashmem_handle)),
+      metadata_header_(metadata_header) {}
+
+BufferHubMetadata::~BufferHubMetadata() {
+  if (metadata_header_ != nullptr) {
+    int ret = munmap(metadata_header_, metadata_size());
+    ALOGE_IF(ret != 0,
+             "BufferHubMetadata::~BufferHubMetadata: failed to unmap ashmem, "
+             "error=%d.",
+             errno);
+    metadata_header_ = nullptr;
+  }
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libbufferhub/consumer_buffer.cpp b/libs/vr/libbufferhub/consumer_buffer.cpp
new file mode 100644
index 0000000..c9d8554
--- /dev/null
+++ b/libs/vr/libbufferhub/consumer_buffer.cpp
@@ -0,0 +1,178 @@
+#include <private/dvr/consumer_buffer.h>
+
+using android::pdx::LocalChannelHandle;
+using android::pdx::LocalHandle;
+using android::pdx::Status;
+
+namespace android {
+namespace dvr {
+
+ConsumerBuffer::ConsumerBuffer(LocalChannelHandle channel)
+    : BASE(std::move(channel)) {
+  const int ret = ImportBuffer();
+  if (ret < 0) {
+    ALOGE("ConsumerBuffer::ConsumerBuffer: Failed to import buffer: %s",
+          strerror(-ret));
+    Close(ret);
+  }
+}
+
+std::unique_ptr<ConsumerBuffer> ConsumerBuffer::Import(
+    LocalChannelHandle channel) {
+  ATRACE_NAME("ConsumerBuffer::Import");
+  ALOGD_IF(TRACE, "ConsumerBuffer::Import: channel=%d", channel.value());
+  return ConsumerBuffer::Create(std::move(channel));
+}
+
+std::unique_ptr<ConsumerBuffer> ConsumerBuffer::Import(
+    Status<LocalChannelHandle> status) {
+  return Import(status ? status.take()
+                       : LocalChannelHandle{nullptr, -status.error()});
+}
+
+int ConsumerBuffer::LocalAcquire(DvrNativeBufferMetadata* out_meta,
+                                 LocalHandle* out_fence) {
+  if (!out_meta)
+    return -EINVAL;
+
+  // Only check producer bit and this consumer buffer's particular consumer bit.
+  // The buffer is can be acquired iff: 1) producer bit is set; 2) consumer bit
+  // is not set.
+  uint64_t buffer_state = buffer_state_->load();
+  if (!BufferHubDefs::IsBufferPosted(buffer_state, buffer_state_bit())) {
+    ALOGE("ConsumerBuffer::LocalAcquire: not posted, id=%d state=%" PRIx64
+          " buffer_state_bit=%" PRIx64 ".",
+          id(), buffer_state, buffer_state_bit());
+    return -EBUSY;
+  }
+
+  // Copy the canonical metadata.
+  void* metadata_ptr = reinterpret_cast<void*>(&metadata_header_->metadata);
+  memcpy(out_meta, metadata_ptr, sizeof(DvrNativeBufferMetadata));
+  // Fill in the user_metadata_ptr in address space of the local process.
+  if (out_meta->user_metadata_size) {
+    out_meta->user_metadata_ptr =
+        reinterpret_cast<uint64_t>(user_metadata_ptr_);
+  } else {
+    out_meta->user_metadata_ptr = 0;
+  }
+
+  uint64_t fence_state = fence_state_->load();
+  // If there is an acquire fence from producer, we need to return it.
+  if (fence_state & BufferHubDefs::kProducerStateBit) {
+    *out_fence = shared_acquire_fence_.Duplicate();
+  }
+
+  // Set the consumer bit unique to this consumer.
+  BufferHubDefs::ModifyBufferState(buffer_state_, 0ULL, buffer_state_bit());
+  return 0;
+}
+
+int ConsumerBuffer::Acquire(LocalHandle* ready_fence) {
+  return Acquire(ready_fence, nullptr, 0);
+}
+
+int ConsumerBuffer::Acquire(LocalHandle* ready_fence, void* meta,
+                            size_t user_metadata_size) {
+  ATRACE_NAME("ConsumerBuffer::Acquire");
+
+  if (const int error = CheckMetadata(user_metadata_size))
+    return error;
+
+  DvrNativeBufferMetadata canonical_meta;
+  if (const int error = LocalAcquire(&canonical_meta, ready_fence))
+    return error;
+
+  if (meta && user_metadata_size) {
+    void* metadata_src =
+        reinterpret_cast<void*>(canonical_meta.user_metadata_ptr);
+    if (metadata_src) {
+      memcpy(meta, metadata_src, user_metadata_size);
+    } else {
+      ALOGW("ConsumerBuffer::Acquire: no user-defined metadata.");
+    }
+  }
+
+  auto status = InvokeRemoteMethod<BufferHubRPC::ConsumerAcquire>();
+  if (!status)
+    return -status.error();
+  return 0;
+}
+
+int ConsumerBuffer::AcquireAsync(DvrNativeBufferMetadata* out_meta,
+                                 LocalHandle* out_fence) {
+  ATRACE_NAME("ConsumerBuffer::AcquireAsync");
+
+  if (const int error = LocalAcquire(out_meta, out_fence))
+    return error;
+
+  auto status = SendImpulse(BufferHubRPC::ConsumerAcquire::Opcode);
+  if (!status)
+    return -status.error();
+  return 0;
+}
+
+int ConsumerBuffer::LocalRelease(const DvrNativeBufferMetadata* meta,
+                                 const LocalHandle& release_fence) {
+  if (const int error = CheckMetadata(meta->user_metadata_size))
+    return error;
+
+  // Check invalid state transition.
+  uint64_t buffer_state = buffer_state_->load();
+  if (!BufferHubDefs::IsBufferAcquired(buffer_state)) {
+    ALOGE("ConsumerBuffer::LocalRelease: not acquired id=%d state=%" PRIx64 ".",
+          id(), buffer_state);
+    return -EBUSY;
+  }
+
+  // On release, only the user requested metadata is copied back into the shared
+  // memory for metadata. Since there are multiple consumers, it doesn't make
+  // sense to send the canonical metadata back to the producer. However, one of
+  // the consumer can still choose to write up to user_metadata_size bytes of
+  // data into user_metadata_ptr.
+  if (meta->user_metadata_ptr && meta->user_metadata_size) {
+    void* metadata_src = reinterpret_cast<void*>(meta->user_metadata_ptr);
+    memcpy(user_metadata_ptr_, metadata_src, meta->user_metadata_size);
+  }
+
+  // Send out the release fence through the shared epoll fd. Note that during
+  // releasing the producer is not expected to be polling on the fence.
+  if (const int error = UpdateSharedFence(release_fence, shared_release_fence_))
+    return error;
+
+  // For release operation, the client don't need to change the state as it's
+  // bufferhubd's job to flip the produer bit once all consumers are released.
+  return 0;
+}
+
+int ConsumerBuffer::Release(const LocalHandle& release_fence) {
+  ATRACE_NAME("ConsumerBuffer::Release");
+
+  DvrNativeBufferMetadata meta;
+  if (const int error = LocalRelease(&meta, release_fence))
+    return error;
+
+  return ReturnStatusOrError(InvokeRemoteMethod<BufferHubRPC::ConsumerRelease>(
+      BorrowedFence(release_fence.Borrow())));
+}
+
+int ConsumerBuffer::ReleaseAsync() {
+  DvrNativeBufferMetadata meta;
+  return ReleaseAsync(&meta, LocalHandle());
+}
+
+int ConsumerBuffer::ReleaseAsync(const DvrNativeBufferMetadata* meta,
+                                 const LocalHandle& release_fence) {
+  ATRACE_NAME("ConsumerBuffer::ReleaseAsync");
+
+  if (const int error = LocalRelease(meta, release_fence))
+    return error;
+
+  return ReturnStatusOrError(
+      SendImpulse(BufferHubRPC::ConsumerRelease::Opcode));
+}
+
+int ConsumerBuffer::Discard() { return Release(LocalHandle()); }
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libbufferhub/detached_buffer.cpp b/libs/vr/libbufferhub/detached_buffer.cpp
index 6fae16d..47e5828 100644
--- a/libs/vr/libbufferhub/detached_buffer.cpp
+++ b/libs/vr/libbufferhub/detached_buffer.cpp
@@ -1,6 +1,8 @@
-#include <private/dvr/detached_buffer.h>
-
+#include <pdx/default_transport/client_channel.h>
+#include <pdx/default_transport/client_channel_factory.h>
 #include <pdx/file_handle.h>
+#include <private/dvr/bufferhub_rpc.h>
+#include <private/dvr/detached_buffer.h>
 #include <ui/DetachedBufferHandle.h>
 
 #include <poll.h>
@@ -8,10 +10,30 @@
 using android::pdx::LocalChannelHandle;
 using android::pdx::LocalHandle;
 using android::pdx::Status;
+using android::pdx::default_transport::ClientChannel;
+using android::pdx::default_transport::ClientChannelFactory;
 
 namespace android {
 namespace dvr {
 
+BufferHubClient::BufferHubClient()
+    : Client(ClientChannelFactory::Create(BufferHubRPC::kClientPath)) {}
+
+BufferHubClient::BufferHubClient(LocalChannelHandle channel_handle)
+    : Client(ClientChannel::Create(std::move(channel_handle))) {}
+
+bool BufferHubClient::IsValid() const {
+  return IsConnected() && GetChannelHandle().valid();
+}
+
+LocalChannelHandle BufferHubClient::TakeChannelHandle() {
+  if (IsConnected()) {
+    return std::move(GetChannelHandle());
+  } else {
+    return {};
+  }
+}
+
 DetachedBuffer::DetachedBuffer(uint32_t width, uint32_t height,
                                uint32_t layer_count, uint32_t format,
                                uint64_t usage, size_t user_metadata_size) {
@@ -49,7 +71,7 @@
 }
 
 int DetachedBuffer::ImportGraphicBuffer() {
-  ATRACE_NAME("DetachedBuffer::DetachedBuffer");
+  ATRACE_NAME("DetachedBuffer::ImportGraphicBuffer");
 
   auto status = client_.InvokeRemoteMethod<DetachedBufferRPC::Import>();
   if (!status) {
@@ -76,9 +98,53 @@
     return ret;
   }
 
+  // Import the metadata.
+  IonBuffer metadata_buffer;
+  if (const int ret = buffer_desc.ImportMetadata(&metadata_buffer)) {
+    ALOGE("Failed to import metadata buffer, error=%d", ret);
+    return ret;
+  }
+  size_t metadata_buf_size = metadata_buffer.width();
+  if (metadata_buf_size < BufferHubDefs::kMetadataHeaderSize) {
+    ALOGE("DetachedBuffer::ImportGraphicBuffer: metadata buffer too small: %zu",
+          metadata_buf_size);
+    return -EINVAL;
+  }
+
   // If all imports succeed, replace the previous buffer and id.
   id_ = buffer_id;
   buffer_ = std::move(ion_buffer);
+  metadata_buffer_ = std::move(metadata_buffer);
+  user_metadata_size_ = metadata_buf_size - BufferHubDefs::kMetadataHeaderSize;
+
+  void* metadata_ptr = nullptr;
+  if (const int ret =
+          metadata_buffer_.Lock(BufferHubDefs::kMetadataUsage, /*x=*/0,
+                                /*y=*/0, metadata_buf_size,
+                                /*height=*/1, &metadata_ptr)) {
+    ALOGE("DetachedBuffer::ImportGraphicBuffer: Failed to lock metadata.");
+    return ret;
+  }
+
+  // TODO(b/112012161) Set up shared fences.
+
+  // Note that here the buffer state is mapped from shared memory as an atomic
+  // object. The std::atomic's constructor will not be called so that the
+  // original value stored in the memory region can be preserved.
+  metadata_header_ = static_cast<BufferHubDefs::MetadataHeader*>(metadata_ptr);
+  if (user_metadata_size_) {
+    user_metadata_ptr_ = static_cast<void*>(metadata_header_ + 1);
+  } else {
+    user_metadata_ptr_ = nullptr;
+  }
+
+  id_ = buffer_desc.id();
+  buffer_state_bit_ = buffer_desc.buffer_state_bit();
+
+  ALOGD_IF(TRACE,
+           "DetachedBuffer::ImportGraphicBuffer: id=%d, buffer_state=%" PRIx64
+           ".",
+           id(), metadata_header_->buffer_state.load());
   return 0;
 }
 
@@ -104,21 +170,18 @@
   return status_or_handle;
 }
 
-sp<GraphicBuffer> DetachedBuffer::TakeGraphicBuffer() {
-  if (!client_.IsValid() || !buffer_.buffer()) {
-    ALOGE("DetachedBuffer::TakeGraphicBuffer: Invalid buffer.");
-    return nullptr;
+Status<LocalChannelHandle> DetachedBuffer::Duplicate() {
+  ATRACE_NAME("DetachedBuffer::Duplicate");
+  ALOGD_IF(TRACE, "DetachedBuffer::Duplicate: id=%d.", id_);
+
+  auto status_or_handle =
+      client_.InvokeRemoteMethod<DetachedBufferRPC::Duplicate>();
+
+  if (!status_or_handle.ok()) {
+    ALOGE("DetachedBuffer::Duplicate: Failed to duplicate buffer (id=%d): %s.",
+          id_, status_or_handle.GetErrorMessage().c_str());
   }
-
-  // Technically this should never happen.
-  LOG_FATAL_IF(
-      buffer_.buffer()->isDetachedBuffer(),
-      "DetachedBuffer::TakeGraphicBuffer: GraphicBuffer is already detached.");
-
-  sp<GraphicBuffer> buffer = std::move(buffer_.buffer());
-  buffer->setDetachedBufferHandle(
-      DetachedBufferHandle::Create(client_.TakeChannelHandle()));
-  return buffer;
+  return status_or_handle;
 }
 
 }  // namespace dvr
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h
new file mode 100644
index 0000000..24db241
--- /dev/null
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_base.h
@@ -0,0 +1,172 @@
+#ifndef ANDROID_DVR_BUFFER_HUB_BASE_H_
+#define ANDROID_DVR_BUFFER_HUB_BASE_H_
+
+#include <vector>
+
+#include <private/dvr/bufferhub_rpc.h>
+
+namespace android {
+namespace dvr {
+
+// Base class of two types of BufferHub clients: dvr::ProducerBuffer and
+// dvr::ConsumerBuffer.
+class BufferHubBase : public pdx::Client {
+ public:
+  using LocalHandle = pdx::LocalHandle;
+  using LocalChannelHandle = pdx::LocalChannelHandle;
+  template <typename T>
+  using Status = pdx::Status<T>;
+
+  // Create a new consumer channel that is attached to the producer. Returns
+  // a file descriptor for the new channel or a negative error code.
+  Status<LocalChannelHandle> CreateConsumer();
+
+  // Polls the fd for |timeout_ms| milliseconds (-1 for infinity).
+  int Poll(int timeout_ms);
+
+  // Locks the area specified by (x, y, width, height) for a specific usage. If
+  // the usage is software then |addr| will be updated to point to the address
+  // of the buffer in virtual memory. The caller should only access/modify the
+  // pixels in the specified area. anything else is undefined behavior.
+  int Lock(int usage, int x, int y, int width, int height, void** addr);
+
+  // Must be called after Lock() when the caller has finished changing the
+  // buffer.
+  int Unlock();
+
+  // Gets a blob buffer that was created with ProducerBuffer::CreateBlob.
+  // Locking and Unlocking is handled internally. There's no need to Unlock
+  // after calling this method.
+  int GetBlobReadWritePointer(size_t size, void** addr);
+
+  // Gets a blob buffer that was created with ProducerBuffer::CreateBlob.
+  // Locking and Unlocking is handled internally. There's no need to Unlock
+  // after calling this method.
+  int GetBlobReadOnlyPointer(size_t size, void** addr);
+
+  // Returns a dup'd file descriptor for accessing the blob shared memory. The
+  // caller takes ownership of the file descriptor and must close it or pass on
+  // ownership. Some GPU API extensions can take file descriptors to bind shared
+  // memory gralloc buffers to GPU buffer objects.
+  LocalHandle GetBlobFd() const {
+    // Current GPU vendor puts the buffer allocation in one FD. If we change GPU
+    // vendors and this is the wrong fd, late-latching and EDS will very clearly
+    // stop working and we will need to correct this. The alternative is to use
+    // a GL context in the pose service to allocate this buffer or to use the
+    // ION API directly instead of gralloc.
+    return LocalHandle(dup(native_handle()->data[0]));
+  }
+
+  // Get up to |max_fds_count| file descriptors for accessing the blob shared
+  // memory. |fds_count| will contain the actual number of file descriptors.
+  void GetBlobFds(int* fds, size_t* fds_count, size_t max_fds_count) const;
+
+  using Client::event_fd;
+
+  Status<int> GetEventMask(int events) {
+    if (auto* client_channel = GetChannel()) {
+      return client_channel->GetEventMask(events);
+    } else {
+      return pdx::ErrorStatus(EINVAL);
+    }
+  }
+
+  std::vector<pdx::ClientChannel::EventSource> GetEventSources() const {
+    if (auto* client_channel = GetChannel()) {
+      return client_channel->GetEventSources();
+    } else {
+      return {};
+    }
+  }
+
+  native_handle_t* native_handle() const {
+    return const_cast<native_handle_t*>(buffer_.handle());
+  }
+
+  IonBuffer* buffer() { return &buffer_; }
+  const IonBuffer* buffer() const { return &buffer_; }
+
+  // Gets ID of the buffer client. All BufferHub clients derived from the same
+  // buffer in bufferhubd share the same buffer id.
+  int id() const { return id_; }
+
+  // Gets the channel id of the buffer client. Each BufferHub client has its
+  // system unique channel id.
+  int cid() const { return cid_; }
+
+  // Returns the buffer buffer state.
+  uint64_t buffer_state() { return buffer_state_->load(); };
+
+  // A state mask which is unique to a buffer hub client among all its siblings
+  // sharing the same concrete graphic buffer.
+  uint64_t buffer_state_bit() const { return buffer_state_bit_; }
+
+  // The following methods return settings of the first buffer. Currently,
+  // it is only possible to create multi-buffer BufferHubBases with the same
+  // settings.
+  uint32_t width() const { return buffer_.width(); }
+  uint32_t height() const { return buffer_.height(); }
+  uint32_t stride() const { return buffer_.stride(); }
+  uint32_t format() const { return buffer_.format(); }
+  uint32_t usage() const { return buffer_.usage(); }
+  uint32_t layer_count() const { return buffer_.layer_count(); }
+
+  uint64_t GetQueueIndex() const { return metadata_header_->queue_index; }
+  void SetQueueIndex(uint64_t index) { metadata_header_->queue_index = index; }
+
+ protected:
+  explicit BufferHubBase(LocalChannelHandle channel);
+  explicit BufferHubBase(const std::string& endpoint_path);
+  virtual ~BufferHubBase();
+
+  // Initialization helper.
+  int ImportBuffer();
+
+  // Check invalid metadata operation. Returns 0 if requested metadata is valid.
+  int CheckMetadata(size_t user_metadata_size) const;
+
+  // Send out the new fence by updating the shared fence (shared_release_fence
+  // for producer and shared_acquire_fence for consumer). Note that during this
+  // should only be used in LocalPost() or LocalRelease, and the shared fence
+  // shouldn't be poll'ed by the other end.
+  int UpdateSharedFence(const LocalHandle& new_fence,
+                        const LocalHandle& shared_fence);
+
+  // IonBuffer that is shared between bufferhubd, producer, and consumers.
+  size_t metadata_buf_size_{0};
+  size_t user_metadata_size_{0};
+  BufferHubDefs::MetadataHeader* metadata_header_{nullptr};
+  void* user_metadata_ptr_{nullptr};
+  std::atomic<uint64_t>* buffer_state_{nullptr};
+  std::atomic<uint64_t>* fence_state_{nullptr};
+
+  LocalHandle shared_acquire_fence_;
+  LocalHandle shared_release_fence_;
+
+  // A local fence fd that holds the ownership of the fence fd on Post (for
+  // producer) and Release (for consumer).
+  LocalHandle pending_fence_fd_;
+
+ private:
+  BufferHubBase(const BufferHubBase&) = delete;
+  void operator=(const BufferHubBase&) = delete;
+
+  // Global id for the buffer that is consistent across processes. It is meant
+  // for logging and debugging purposes only and should not be used for lookup
+  // or any other functional purpose as a security precaution.
+  int id_;
+
+  // Channel id.
+  int cid_;
+
+  // Client bit mask which indicates the locations of this client object in the
+  // buffer_state_.
+  uint64_t buffer_state_bit_{0ULL};
+  IonBuffer buffer_;
+  IonBuffer metadata_buffer_;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_BUFFER_HUB_BASE_H_
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h
index 0ea77c8..1daeed9 100644
--- a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_client.h
@@ -1,347 +1,10 @@
 #ifndef ANDROID_DVR_BUFFER_HUB_CLIENT_H_
 #define ANDROID_DVR_BUFFER_HUB_CLIENT_H_
 
-#include <hardware/gralloc.h>
-#include <pdx/channel_handle.h>
-#include <pdx/client.h>
-#include <pdx/file_handle.h>
-#include <pdx/status.h>
-
-#include <vector>
-
-#include <private/dvr/ion_buffer.h>
-
-#include "bufferhub_rpc.h"
-
-namespace android {
-namespace dvr {
-
-class BufferHubClient : public pdx::Client {
- public:
-  BufferHubClient();
-  explicit BufferHubClient(pdx::LocalChannelHandle channel_handle);
-
-  bool IsValid() const;
-  pdx::LocalChannelHandle TakeChannelHandle();
-
-  using pdx::Client::Close;
-  using pdx::Client::GetChannel;
-  using pdx::Client::InvokeRemoteMethod;
-  using pdx::Client::IsConnected;
-  using pdx::Client::event_fd;
-};
-
-class BufferHubBuffer : public pdx::Client {
- public:
-  using LocalHandle = pdx::LocalHandle;
-  using LocalChannelHandle = pdx::LocalChannelHandle;
-  template <typename T>
-  using Status = pdx::Status<T>;
-
-  // Create a new consumer channel that is attached to the producer. Returns
-  // a file descriptor for the new channel or a negative error code.
-  Status<LocalChannelHandle> CreateConsumer();
-
-  // Polls the fd for |timeout_ms| milliseconds (-1 for infinity).
-  int Poll(int timeout_ms);
-
-  // Locks the area specified by (x, y, width, height) for a specific usage. If
-  // the usage is software then |addr| will be updated to point to the address
-  // of the buffer in virtual memory. The caller should only access/modify the
-  // pixels in the specified area. anything else is undefined behavior.
-  int Lock(int usage, int x, int y, int width, int height, void** addr);
-
-  // Must be called after Lock() when the caller has finished changing the
-  // buffer.
-  int Unlock();
-
-  // Gets a blob buffer that was created with BufferProducer::CreateBlob.
-  // Locking and Unlocking is handled internally. There's no need to Unlock
-  // after calling this method.
-  int GetBlobReadWritePointer(size_t size, void** addr);
-
-  // Gets a blob buffer that was created with BufferProducer::CreateBlob.
-  // Locking and Unlocking is handled internally. There's no need to Unlock
-  // after calling this method.
-  int GetBlobReadOnlyPointer(size_t size, void** addr);
-
-  // Returns a dup'd file descriptor for accessing the blob shared memory. The
-  // caller takes ownership of the file descriptor and must close it or pass on
-  // ownership. Some GPU API extensions can take file descriptors to bind shared
-  // memory gralloc buffers to GPU buffer objects.
-  LocalHandle GetBlobFd() const {
-    // Current GPU vendor puts the buffer allocation in one FD. If we change GPU
-    // vendors and this is the wrong fd, late-latching and EDS will very clearly
-    // stop working and we will need to correct this. The alternative is to use
-    // a GL context in the pose service to allocate this buffer or to use the
-    // ION API directly instead of gralloc.
-    return LocalHandle(dup(native_handle()->data[0]));
-  }
-
-  // Get up to |max_fds_count| file descriptors for accessing the blob shared
-  // memory. |fds_count| will contain the actual number of file descriptors.
-  void GetBlobFds(int* fds, size_t* fds_count, size_t max_fds_count) const;
-
-  using Client::event_fd;
-
-  Status<int> GetEventMask(int events) {
-    if (auto* client_channel = GetChannel()) {
-      return client_channel->GetEventMask(events);
-    } else {
-      return pdx::ErrorStatus(EINVAL);
-    }
-  }
-
-  std::vector<pdx::ClientChannel::EventSource> GetEventSources() const {
-    if (auto* client_channel = GetChannel()) {
-      return client_channel->GetEventSources();
-    } else {
-      return {};
-    }
-  }
-
-  native_handle_t* native_handle() const {
-    return const_cast<native_handle_t*>(buffer_.handle());
-  }
-
-  IonBuffer* buffer() { return &buffer_; }
-  const IonBuffer* buffer() const { return &buffer_; }
-
-  int id() const { return id_; }
-
-  // Returns the buffer buffer state.
-  uint64_t buffer_state() { return buffer_state_->load(); };
-
-  // A state mask which is unique to a buffer hub client among all its siblings
-  // sharing the same concrete graphic buffer.
-  uint64_t buffer_state_bit() const { return buffer_state_bit_; }
-
-  // The following methods return settings of the first buffer. Currently,
-  // it is only possible to create multi-buffer BufferHubBuffers with the same
-  // settings.
-  uint32_t width() const { return buffer_.width(); }
-  uint32_t height() const { return buffer_.height(); }
-  uint32_t stride() const { return buffer_.stride(); }
-  uint32_t format() const { return buffer_.format(); }
-  uint32_t usage() const { return buffer_.usage(); }
-  uint32_t layer_count() const { return buffer_.layer_count(); }
-
-  uint64_t GetQueueIndex() const { return metadata_header_->queue_index; }
-  void SetQueueIndex(uint64_t index) { metadata_header_->queue_index = index; }
-
- protected:
-  explicit BufferHubBuffer(LocalChannelHandle channel);
-  explicit BufferHubBuffer(const std::string& endpoint_path);
-  virtual ~BufferHubBuffer();
-
-  // Initialization helper.
-  int ImportBuffer();
-
-  // Check invalid metadata operation. Returns 0 if requested metadata is valid.
-  int CheckMetadata(size_t user_metadata_size) const;
-
-  // Send out the new fence by updating the shared fence (shared_release_fence
-  // for producer and shared_acquire_fence for consumer). Note that during this
-  // should only be used in LocalPost() or LocalRelease, and the shared fence
-  // shouldn't be poll'ed by the other end.
-  int UpdateSharedFence(const LocalHandle& new_fence,
-                        const LocalHandle& shared_fence);
-
-  // IonBuffer that is shared between bufferhubd, producer, and consumers.
-  size_t metadata_buf_size_{0};
-  size_t user_metadata_size_{0};
-  BufferHubDefs::MetadataHeader* metadata_header_{nullptr};
-  void* user_metadata_ptr_{nullptr};
-  std::atomic<uint64_t>* buffer_state_{nullptr};
-  std::atomic<uint64_t>* fence_state_{nullptr};
-
-  LocalHandle shared_acquire_fence_;
-  LocalHandle shared_release_fence_;
-
-  // A local fence fd that holds the ownership of the fence fd on Post (for
-  // producer) and Release (for consumer).
-  LocalHandle pending_fence_fd_;
-
- private:
-  BufferHubBuffer(const BufferHubBuffer&) = delete;
-  void operator=(const BufferHubBuffer&) = delete;
-
-  // Global id for the buffer that is consistent across processes. It is meant
-  // for logging and debugging purposes only and should not be used for lookup
-  // or any other functional purpose as a security precaution.
-  int id_;
-  uint64_t buffer_state_bit_{0ULL};
-  IonBuffer buffer_;
-  IonBuffer metadata_buffer_;
-};
-
-// This represents a writable buffer. Calling Post notifies all clients and
-// makes the buffer read-only. Call Gain to acquire write access. A buffer
-// may have many consumers.
-//
-// The user of BufferProducer is responsible with making sure that the Post() is
-// done with the correct metadata type and size. The user is also responsible
-// for making sure that remote ends (BufferConsumers) are also using the correct
-// metadata when acquiring the buffer. The API guarantees that a Post() with a
-// metadata of wrong size will fail. However, it currently does not do any
-// type checking.
-// The API also assumes that metadata is a serializable type (plain old data).
-class BufferProducer : public pdx::ClientBase<BufferProducer, BufferHubBuffer> {
- public:
-  // Imports a bufferhub producer channel, assuming ownership of its handle.
-  static std::unique_ptr<BufferProducer> Import(LocalChannelHandle channel);
-  static std::unique_ptr<BufferProducer> Import(
-      Status<LocalChannelHandle> status);
-
-  // Asynchronously posts a buffer. The fence and metadata are passed to
-  // consumer via shared fd and shared memory.
-  int PostAsync(const DvrNativeBufferMetadata* meta,
-                const LocalHandle& ready_fence);
-
-  // Post this buffer, passing |ready_fence| to the consumers. The bytes in
-  // |meta| are passed unaltered to the consumers. The producer must not modify
-  // the buffer until it is re-gained.
-  // This returns zero or a negative unix error code.
-  int Post(const LocalHandle& ready_fence, const void* meta,
-           size_t user_metadata_size);
-
-  template <typename Meta,
-            typename = typename std::enable_if<std::is_void<Meta>::value>::type>
-  int Post(const LocalHandle& ready_fence) {
-    return Post(ready_fence, nullptr, 0);
-  }
-  template <typename Meta, typename = typename std::enable_if<
-                               !std::is_void<Meta>::value>::type>
-  int Post(const LocalHandle& ready_fence, const Meta& meta) {
-    return Post(ready_fence, &meta, sizeof(meta));
-  }
-
-  // Attempt to re-gain the buffer for writing. If |release_fence| is valid, it
-  // must be waited on before using the buffer. If it is not valid then the
-  // buffer is free for immediate use. This call will only succeed if the buffer
-  // is in the released state.
-  // This returns zero or a negative unix error code.
-  int Gain(LocalHandle* release_fence);
-  int GainAsync();
-
-  // Asynchronously marks a released buffer as gained. This method is similar to
-  // the synchronous version above, except that it does not wait for BufferHub
-  // to acknowledge success or failure. Because of the asynchronous nature of
-  // the underlying message, no error is returned if this method is called when
-  // the buffer is in an incorrect state. Returns zero if sending the message
-  // succeeded, or a negative errno code if local error check fails.
-  int GainAsync(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
-
-  // Detaches a ProducerBuffer from an existing producer/consumer set. Can only
-  // be called when a producer buffer has exclusive access to the buffer (i.e.
-  // in the gain'ed state). On the successful return of the IPC call, a new
-  // LocalChannelHandle representing a detached buffer will be returned and all
-  // existing producer and consumer channels will be closed. Further IPCs
-  // towards those channels will return error.
-  Status<LocalChannelHandle> Detach();
-
- private:
-  friend BASE;
-
-  // Constructors are automatically exposed through BufferProducer::Create(...)
-  // static template methods inherited from ClientBase, which take the same
-  // arguments as the constructors.
-
-  // Constructs a buffer with the given geometry and parameters.
-  BufferProducer(uint32_t width, uint32_t height, uint32_t format,
-                 uint64_t usage, size_t metadata_size = 0);
-
-  // Constructs a blob (flat) buffer with the given usage flags.
-  BufferProducer(uint64_t usage, size_t size);
-
-  // Imports the given file handle to a producer channel, taking ownership.
-  explicit BufferProducer(LocalChannelHandle channel);
-
-  // Local state transition helpers.
-  int LocalGain(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
-  int LocalPost(const DvrNativeBufferMetadata* meta,
-                const LocalHandle& ready_fence);
-};
-
-// This is a connection to a producer buffer, which can be located in another
-// application. When that buffer is Post()ed, this fd will be signaled and
-// Acquire allows read access. The user is responsible for making sure that
-// Acquire is called with the correct metadata structure. The only guarantee the
-// API currently provides is that an Acquire() with metadata of the wrong size
-// will fail.
-class BufferConsumer : public pdx::ClientBase<BufferConsumer, BufferHubBuffer> {
- public:
-  // This call assumes ownership of |fd|.
-  static std::unique_ptr<BufferConsumer> Import(LocalChannelHandle channel);
-  static std::unique_ptr<BufferConsumer> Import(
-      Status<LocalChannelHandle> status);
-
-  // Attempt to retrieve a post event from buffer hub. If successful,
-  // |ready_fence| will be set to a fence to wait on until the buffer is ready.
-  // This call will only succeed after the fd is signalled. This call may be
-  // performed as an alternative to the Acquire() with metadata. In such cases
-  // the metadata is not read.
-  //
-  // This returns zero or negative unix error code.
-  int Acquire(LocalHandle* ready_fence);
-
-  // Attempt to retrieve a post event from buffer hub. If successful,
-  // |ready_fence| is set to a fence signaling that the contents of the buffer
-  // are available. This call will only succeed if the buffer is in the posted
-  // state.
-  // Returns zero on success, or a negative errno code otherwise.
-  int Acquire(LocalHandle* ready_fence, void* meta, size_t user_metadata_size);
-
-  // Attempt to retrieve a post event from buffer hub. If successful,
-  // |ready_fence| is set to a fence to wait on until the buffer is ready. This
-  // call will only succeed after the fd is signaled. This returns zero or a
-  // negative unix error code.
-  template <typename Meta>
-  int Acquire(LocalHandle* ready_fence, Meta* meta) {
-    return Acquire(ready_fence, meta, sizeof(*meta));
-  }
-
-  // Asynchronously acquires a bufer.
-  int AcquireAsync(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
-
-  // This should be called after a successful Acquire call. If the fence is
-  // valid the fence determines the buffer usage, otherwise the buffer is
-  // released immediately.
-  // This returns zero or a negative unix error code.
-  int Release(const LocalHandle& release_fence);
-  int ReleaseAsync();
-
-  // Asynchronously releases a buffer. Similar to the synchronous version above,
-  // except that it does not wait for BufferHub to reply with success or error.
-  // The fence and metadata are passed to consumer via shared fd and shared
-  // memory.
-  int ReleaseAsync(const DvrNativeBufferMetadata* meta,
-                   const LocalHandle& release_fence);
-
-  // May be called after or instead of Acquire to indicate that the consumer
-  // does not need to access the buffer this cycle. This returns zero or a
-  // negative unix error code.
-  int Discard();
-
-  // When set, this consumer is no longer notified when this buffer is
-  // available. The system behaves as if Discard() is immediately called
-  // whenever the buffer is posted. If ignore is set to true while a buffer is
-  // pending, it will act as if Discard() was also called.
-  // This returns zero or a negative unix error code.
-  int SetIgnore(bool ignore);
-
- private:
-  friend BASE;
-
-  explicit BufferConsumer(LocalChannelHandle channel);
-
-  // Local state transition helpers.
-  int LocalAcquire(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
-  int LocalRelease(const DvrNativeBufferMetadata* meta,
-                   const LocalHandle& release_fence);
-};
-
-}  // namespace dvr
-}  // namespace android
+// TODO(b/116855254): This header is completely deprecated and replaced by
+// consumer_buffer.h and producer_buffer.h. Remove this file once all references
+// to it has been removed.
+#include <private/dvr/consumer_buffer.h>
+#include <private/dvr/producer_buffer.h>
 
 #endif  // ANDROID_DVR_BUFFER_HUB_CLIENT_H_
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
new file mode 100644
index 0000000..8b2bf91
--- /dev/null
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_defs.h
@@ -0,0 +1,89 @@
+#ifndef ANDROID_DVR_BUFFER_HUB_DEFS_H_
+#define ANDROID_DVR_BUFFER_HUB_DEFS_H_
+
+#include <dvr/dvr_api.h>
+#include <hardware/gralloc.h>
+
+#include <atomic>
+
+namespace android {
+namespace dvr {
+
+namespace BufferHubDefs {
+
+static constexpr uint32_t kMetadataFormat = HAL_PIXEL_FORMAT_BLOB;
+static constexpr uint32_t kMetadataUsage =
+    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN;
+
+// Single producuer multiple (up to 63) consumers ownership signal.
+// 64-bit atomic unsigned int.
+//
+// MSB           LSB
+//  |             |
+//  v             v
+// [P|C62|...|C1|C0]
+// Gain'ed state:     [0|..|0|0] -> Exclusively Writable.
+// Post'ed state:     [1|..|0|0]
+// Acquired'ed state: [1|..|X|X] -> At least one bit is set in lower 63 bits
+// Released'ed state: [0|..|X|X] -> At least one bit is set in lower 63 bits
+static constexpr uint64_t kProducerStateBit = 1ULL << 63;
+static constexpr uint64_t kConsumerStateMask = (1ULL << 63) - 1;
+
+static inline void ModifyBufferState(std::atomic<uint64_t>* buffer_state,
+                                     uint64_t clear_mask, uint64_t set_mask) {
+  uint64_t old_state;
+  uint64_t new_state;
+  do {
+    old_state = buffer_state->load();
+    new_state = (old_state & ~clear_mask) | set_mask;
+  } while (!buffer_state->compare_exchange_weak(old_state, new_state));
+}
+
+static inline bool IsBufferGained(uint64_t state) { return state == 0; }
+
+static inline bool IsBufferPosted(uint64_t state,
+                                  uint64_t consumer_bit = kConsumerStateMask) {
+  return (state & kProducerStateBit) && !(state & consumer_bit);
+}
+
+static inline bool IsBufferAcquired(uint64_t state) {
+  return (state & kProducerStateBit) && (state & kConsumerStateMask);
+}
+
+static inline bool IsBufferReleased(uint64_t state) {
+  return !(state & kProducerStateBit) && (state & kConsumerStateMask);
+}
+
+static inline uint64_t FindNextClearedBit(uint64_t bits) {
+  return ~bits - (~bits & (~bits - 1));
+}
+
+static inline uint64_t FindFirstClearedBit() {
+  return FindNextClearedBit(kProducerStateBit);
+}
+
+struct __attribute__((packed, aligned(8))) MetadataHeader {
+  // Internal data format, which can be updated as long as the size, padding and
+  // field alignment of the struct is consistent within the same ABI. As this
+  // part is subject for future updates, it's not stable cross Android version,
+  // so don't have it visible from outside of the Android platform (include Apps
+  // and vendor HAL).
+  std::atomic<uint64_t> buffer_state;
+  std::atomic<uint64_t> fence_state;
+  uint64_t queue_index;
+
+  // Public data format, which should be updated with caution. See more details
+  // in dvr_api.h
+  DvrNativeBufferMetadata metadata;
+};
+
+static_assert(sizeof(MetadataHeader) == 128, "Unexpected MetadataHeader size");
+static constexpr size_t kMetadataHeaderSize = sizeof(MetadataHeader);
+
+}  // namespace BufferHubDefs
+
+}  // namespace dvr
+}  // namespace android
+
+
+#endif  // ANDROID_DVR_BUFFER_HUB_DEFS_H_
diff --git a/libs/vr/libbufferhub/include/private/dvr/buffer_hub_metadata.h b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_metadata.h
new file mode 100644
index 0000000..980ade7
--- /dev/null
+++ b/libs/vr/libbufferhub/include/private/dvr/buffer_hub_metadata.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_DVR_BUFFER_HUB_METADATA_H_
+#define ANDROID_DVR_BUFFER_HUB_METADATA_H_
+
+#include <pdx/file_handle.h>
+#include <private/dvr/buffer_hub_defs.h>
+
+namespace android {
+namespace dvr {
+
+class BufferHubMetadata {
+ public:
+  // Creates a new BufferHubMetadata backed by an ashmem region.
+  //
+  // @param user_metadata_size Size in bytes of the user defined metadata. The
+  //        entire metadata shared memory region to be allocated is the size of
+  //        canonical BufferHubDefs::MetadataHeader plus user_metadata_size.
+  static BufferHubMetadata Create(size_t user_metadata_size);
+
+  // Imports an existing BufferHubMetadata from an ashmem FD.
+  //
+  // TODO(b/112338294): Refactor BufferHub to use Binder as its internal IPC
+  // backend instead of UDS.
+  //
+  // @param ashmem_handle Ashmem file handle representing an ashmem region.
+  static BufferHubMetadata Import(pdx::LocalHandle ashmem_handle);
+
+  BufferHubMetadata() = default;
+
+  BufferHubMetadata(BufferHubMetadata&& other) { *this = std::move(other); }
+
+  ~BufferHubMetadata();
+
+  BufferHubMetadata& operator=(BufferHubMetadata&& other) {
+    if (this != &other) {
+      user_metadata_size_ = other.user_metadata_size_;
+      other.user_metadata_size_ = 0;
+
+      ashmem_handle_ = std::move(other.ashmem_handle_);
+
+      // The old raw metadata_header_ pointer must be cleared, otherwise the
+      // destructor will automatically mummap() the shared memory.
+      metadata_header_ = other.metadata_header_;
+      other.metadata_header_ = nullptr;
+    }
+    return *this;
+  }
+
+  // Returns true if the metadata is valid, i.e. the metadata has a valid ashmem
+  // fd and the ashmem has been mapped into virtual address space.
+  bool IsValid() const {
+    return ashmem_handle_.IsValid() && metadata_header_ != nullptr;
+  }
+
+  size_t user_metadata_size() const { return user_metadata_size_; }
+  size_t metadata_size() const {
+    return user_metadata_size_ + BufferHubDefs::kMetadataHeaderSize;
+  }
+
+  const pdx::LocalHandle& ashmem_handle() const { return ashmem_handle_; }
+  BufferHubDefs::MetadataHeader* metadata_header() { return metadata_header_; }
+
+ private:
+  BufferHubMetadata(size_t user_metadata_size, pdx::LocalHandle ashmem_handle,
+                    BufferHubDefs::MetadataHeader* metadata_header);
+
+  BufferHubMetadata(const BufferHubMetadata&) = delete;
+  void operator=(const BufferHubMetadata&) = delete;
+
+  size_t user_metadata_size_ = 0;
+  pdx::LocalHandle ashmem_handle_;
+  BufferHubDefs::MetadataHeader* metadata_header_ = nullptr;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_BUFFER_HUB_METADATA_H_
diff --git a/libs/vr/libbufferhub/include/private/dvr/bufferhub_rpc.h b/libs/vr/libbufferhub/include/private/dvr/bufferhub_rpc.h
index 04f4fb4..0c7fc90 100644
--- a/libs/vr/libbufferhub/include/private/dvr/bufferhub_rpc.h
+++ b/libs/vr/libbufferhub/include/private/dvr/bufferhub_rpc.h
@@ -1,11 +1,11 @@
 #ifndef ANDROID_DVR_BUFFERHUB_RPC_H_
 #define ANDROID_DVR_BUFFERHUB_RPC_H_
 
+#include "buffer_hub_defs.h"
+
 #include <cutils/native_handle.h>
-#include <sys/types.h>
 #include <ui/BufferQueueDefs.h>
 
-#include <dvr/dvr_api.h>
 #include <pdx/channel_handle.h>
 #include <pdx/file_handle.h>
 #include <pdx/rpc/remote_method.h>
@@ -15,71 +15,6 @@
 namespace android {
 namespace dvr {
 
-namespace BufferHubDefs {
-
-static constexpr uint32_t kMetadataFormat = HAL_PIXEL_FORMAT_BLOB;
-static constexpr uint32_t kMetadataUsage =
-    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN;
-
-// Single producuer multiple (up to 63) consumers ownership signal.
-// 64-bit atomic unsigned int.
-//
-// MSB           LSB
-//  |             |
-//  v             v
-// [P|C62|...|C1|C0]
-// Gain'ed state:     [0|..|0|0] -> Exclusively Writable.
-// Post'ed state:     [1|..|0|0]
-// Acquired'ed state: [1|..|X|X] -> At least one bit is set in lower 63 bits
-// Released'ed state: [0|..|X|X] -> At least one bit is set in lower 63 bits
-static constexpr uint64_t kProducerStateBit = 1ULL << 63;
-static constexpr uint64_t kConsumerStateMask = (1ULL << 63) - 1;
-
-static inline void ModifyBufferState(std::atomic<uint64_t>* buffer_state,
-                                     uint64_t clear_mask, uint64_t set_mask) {
-  uint64_t old_state;
-  uint64_t new_state;
-  do {
-    old_state = buffer_state->load();
-    new_state = (old_state & ~clear_mask) | set_mask;
-  } while (!buffer_state->compare_exchange_weak(old_state, new_state));
-}
-
-static inline bool IsBufferGained(uint64_t state) { return state == 0; }
-
-static inline bool IsBufferPosted(uint64_t state,
-                                  uint64_t consumer_bit = kConsumerStateMask) {
-  return (state & kProducerStateBit) && !(state & consumer_bit);
-}
-
-static inline bool IsBufferAcquired(uint64_t state) {
-  return (state & kProducerStateBit) && (state & kConsumerStateMask);
-}
-
-static inline bool IsBufferReleased(uint64_t state) {
-  return !(state & kProducerStateBit) && (state & kConsumerStateMask);
-}
-
-struct __attribute__((packed, aligned(8))) MetadataHeader {
-  // Internal data format, which can be updated as long as the size, padding and
-  // field alignment of the struct is consistent within the same ABI. As this
-  // part is subject for future updates, it's not stable cross Android version,
-  // so don't have it visible from outside of the Android platform (include Apps
-  // and vendor HAL).
-  std::atomic<uint64_t> buffer_state;
-  std::atomic<uint64_t> fence_state;
-  uint64_t queue_index;
-
-  // Public data format, which should be updated with caution. See more details
-  // in dvr_api.h
-  DvrNativeBufferMetadata metadata;
-};
-
-static_assert(sizeof(MetadataHeader) == 128, "Unexpected MetadataHeader size");
-static constexpr size_t kMetadataHeaderSize = sizeof(MetadataHeader);
-
-}  // namespace BufferHubDefs
-
 template <typename FileHandleType>
 class NativeBufferHandle {
  public:
@@ -164,10 +99,11 @@
  public:
   BufferDescription() = default;
   BufferDescription(const IonBuffer& buffer, const IonBuffer& metadata, int id,
-                    uint64_t buffer_state_bit,
+                    int buffer_cid, uint64_t buffer_state_bit,
                     const FileHandleType& acquire_fence_fd,
                     const FileHandleType& release_fence_fd)
       : id_(id),
+        buffer_cid_(buffer_cid),
         buffer_state_bit_(buffer_state_bit),
         buffer_(buffer, id),
         metadata_(metadata, id),
@@ -177,10 +113,15 @@
   BufferDescription(BufferDescription&& other) noexcept = default;
   BufferDescription& operator=(BufferDescription&& other) noexcept = default;
 
-  // ID of the buffer client. All BufferHubBuffer clients derived from the same
-  // buffer in bufferhubd share the same buffer id.
+  // ID of the buffer client. All BufferHub clients derived from the same buffer
+  // in bufferhubd share the same buffer id.
   int id() const { return id_; }
-  // State mask of the buffer client. Each BufferHubBuffer client backed by the
+
+  // Channel ID of the buffer client. Each BufferHub client has its system
+  // unique channel id.
+  int buffer_cid() const { return buffer_cid_; }
+
+  // State mask of the buffer client. Each BufferHub client backed by the
   // same buffer channel has uniqued state bit among its siblings. For a
   // producer buffer the bit must be kProducerStateBit; for a consumer the bit
   // must be one of the kConsumerStateMask.
@@ -193,6 +134,7 @@
 
  private:
   int id_{-1};
+  int buffer_cid_{-1};
   uint64_t buffer_state_bit_{0};
   // Two IonBuffers: one for the graphic buffer and one for metadata.
   NativeBufferHandle<FileHandleType> buffer_;
@@ -202,7 +144,7 @@
   FileHandleType acquire_fence_fd_;
   FileHandleType release_fence_fd_;
 
-  PDX_SERIALIZABLE_MEMBERS(BufferDescription<FileHandleType>, id_,
+  PDX_SERIALIZABLE_MEMBERS(BufferDescription<FileHandleType>, id_, buffer_cid_,
                            buffer_state_bit_, buffer_, metadata_,
                            acquire_fence_fd_, release_fence_fd_);
 
@@ -372,7 +314,6 @@
     kOpProducerGain,
     kOpConsumerAcquire,
     kOpConsumerRelease,
-    kOpConsumerSetIgnore,
     kOpProducerBufferDetach,
     kOpConsumerBufferDetach,
     kOpDetachedBufferCreate,
@@ -381,6 +322,7 @@
     kOpCreateConsumerQueue,
     kOpGetQueueInfo,
     kOpProducerQueueAllocateBuffers,
+    kOpProducerQueueInsertBuffer,
     kOpProducerQueueRemoveBuffer,
     kOpConsumerQueueImportBuffers,
     // TODO(b/77153033): Separate all those RPC operations into subclasses.
@@ -405,7 +347,6 @@
   PDX_REMOTE_METHOD(ConsumerAcquire, kOpConsumerAcquire, LocalFence(Void));
   PDX_REMOTE_METHOD(ConsumerRelease, kOpConsumerRelease,
                     void(LocalFence release_fence));
-  PDX_REMOTE_METHOD(ConsumerSetIgnore, kOpConsumerSetIgnore, void(bool ignore));
   PDX_REMOTE_METHOD(ProducerBufferDetach, kOpProducerBufferDetach,
                     LocalChannelHandle(Void));
 
@@ -430,6 +371,8 @@
                     std::vector<std::pair<LocalChannelHandle, size_t>>(
                         uint32_t width, uint32_t height, uint32_t layer_count,
                         uint32_t format, uint64_t usage, size_t buffer_count));
+  PDX_REMOTE_METHOD(ProducerQueueInsertBuffer, kOpProducerQueueInsertBuffer,
+                    size_t(int buffer_cid));
   PDX_REMOTE_METHOD(ProducerQueueRemoveBuffer, kOpProducerQueueRemoveBuffer,
                     void(size_t slot));
   PDX_REMOTE_METHOD(ConsumerQueueImportBuffers, kOpConsumerQueueImportBuffers,
@@ -442,6 +385,7 @@
     kOpCreate = kOpDetachedBufferBase,
     kOpImport,
     kOpPromote,
+    kOpDuplicate,
   };
 
  public:
@@ -451,8 +395,9 @@
                          size_t user_metadata_size));
   PDX_REMOTE_METHOD(Import, kOpImport, BufferDescription<LocalHandle>(Void));
   PDX_REMOTE_METHOD(Promote, kOpPromote, LocalChannelHandle(Void));
+  PDX_REMOTE_METHOD(Duplicate, kOpDuplicate, LocalChannelHandle(Void));
 
-  PDX_REMOTE_API(API, Create, Promote);
+  PDX_REMOTE_API(API, Create, Import, Promote, Duplicate);
 };
 
 }  // namespace dvr
diff --git a/libs/vr/libbufferhub/include/private/dvr/consumer_buffer.h b/libs/vr/libbufferhub/include/private/dvr/consumer_buffer.h
new file mode 100644
index 0000000..2044c53
--- /dev/null
+++ b/libs/vr/libbufferhub/include/private/dvr/consumer_buffer.h
@@ -0,0 +1,93 @@
+#ifndef ANDROID_DVR_CONSUMER_BUFFER_H_
+#define ANDROID_DVR_CONSUMER_BUFFER_H_
+
+#include <private/dvr/buffer_hub_base.h>
+
+namespace android {
+namespace dvr {
+
+// BufferConsumer was originally poorly named and gets easily confused with
+// IGraphicBufferConsumer. Actually, BufferConsumer is a single buffer that can
+// consume (i.e. read) data from a buffer, but it doesn't consume buffer. On
+// the other hand, IGraphicBufferConsumer is the consumer end of a BufferQueue
+// and it is used to consume buffers.
+//
+// TODO(b/116855254): Remove this typedef once rename is complete in other
+// projects and/or branches.
+typedef class ConsumerBuffer BufferConsumer;
+
+// This is a connection to a producer buffer, which can be located in another
+// application. When that buffer is Post()ed, this fd will be signaled and
+// Acquire allows read access. The user is responsible for making sure that
+// Acquire is called with the correct metadata structure. The only guarantee the
+// API currently provides is that an Acquire() with metadata of the wrong size
+// will fail.
+class ConsumerBuffer : public pdx::ClientBase<ConsumerBuffer, BufferHubBase> {
+ public:
+  // This call assumes ownership of |fd|.
+  static std::unique_ptr<ConsumerBuffer> Import(LocalChannelHandle channel);
+  static std::unique_ptr<ConsumerBuffer> Import(
+      Status<LocalChannelHandle> status);
+
+  // Attempt to retrieve a post event from buffer hub. If successful,
+  // |ready_fence| will be set to a fence to wait on until the buffer is ready.
+  // This call will only succeed after the fd is signalled. This call may be
+  // performed as an alternative to the Acquire() with metadata. In such cases
+  // the metadata is not read.
+  //
+  // This returns zero or negative unix error code.
+  int Acquire(LocalHandle* ready_fence);
+
+  // Attempt to retrieve a post event from buffer hub. If successful,
+  // |ready_fence| is set to a fence signaling that the contents of the buffer
+  // are available. This call will only succeed if the buffer is in the posted
+  // state.
+  // Returns zero on success, or a negative errno code otherwise.
+  int Acquire(LocalHandle* ready_fence, void* meta, size_t user_metadata_size);
+
+  // Attempt to retrieve a post event from buffer hub. If successful,
+  // |ready_fence| is set to a fence to wait on until the buffer is ready. This
+  // call will only succeed after the fd is signaled. This returns zero or a
+  // negative unix error code.
+  template <typename Meta>
+  int Acquire(LocalHandle* ready_fence, Meta* meta) {
+    return Acquire(ready_fence, meta, sizeof(*meta));
+  }
+
+  // Asynchronously acquires a bufer.
+  int AcquireAsync(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
+
+  // This should be called after a successful Acquire call. If the fence is
+  // valid the fence determines the buffer usage, otherwise the buffer is
+  // released immediately.
+  // This returns zero or a negative unix error code.
+  int Release(const LocalHandle& release_fence);
+  int ReleaseAsync();
+
+  // Asynchronously releases a buffer. Similar to the synchronous version above,
+  // except that it does not wait for BufferHub to reply with success or error.
+  // The fence and metadata are passed to consumer via shared fd and shared
+  // memory.
+  int ReleaseAsync(const DvrNativeBufferMetadata* meta,
+                   const LocalHandle& release_fence);
+
+  // May be called after or instead of Acquire to indicate that the consumer
+  // does not need to access the buffer this cycle. This returns zero or a
+  // negative unix error code.
+  int Discard();
+
+ private:
+  friend BASE;
+
+  explicit ConsumerBuffer(LocalChannelHandle channel);
+
+  // Local state transition helpers.
+  int LocalAcquire(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
+  int LocalRelease(const DvrNativeBufferMetadata* meta,
+                   const LocalHandle& release_fence);
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_CONSUMER_BUFFER_H_
diff --git a/libs/vr/libbufferhub/include/private/dvr/detached_buffer.h b/libs/vr/libbufferhub/include/private/dvr/detached_buffer.h
index 6d0b502..d280d94 100644
--- a/libs/vr/libbufferhub/include/private/dvr/detached_buffer.h
+++ b/libs/vr/libbufferhub/include/private/dvr/detached_buffer.h
@@ -1,11 +1,28 @@
 #ifndef ANDROID_DVR_DETACHED_BUFFER_H_
 #define ANDROID_DVR_DETACHED_BUFFER_H_
 
-#include <private/dvr/buffer_hub_client.h>
+#include <pdx/client.h>
+#include <private/dvr/buffer_hub_defs.h>
+#include <private/dvr/buffer_hub_metadata.h>
+#include <private/dvr/ion_buffer.h>
 
 namespace android {
 namespace dvr {
 
+class BufferHubClient : public pdx::Client {
+ public:
+  BufferHubClient();
+  explicit BufferHubClient(pdx::LocalChannelHandle channel_handle);
+
+  bool IsValid() const;
+  pdx::LocalChannelHandle TakeChannelHandle();
+
+  using pdx::Client::Close;
+  using pdx::Client::event_fd;
+  using pdx::Client::GetChannel;
+  using pdx::Client::InvokeRemoteMethod;
+};
+
 class DetachedBuffer {
  public:
   // Allocates a standalone DetachedBuffer not associated with any producer
@@ -28,10 +45,17 @@
   DetachedBuffer(const DetachedBuffer&) = delete;
   void operator=(const DetachedBuffer&) = delete;
 
-  const sp<GraphicBuffer>& buffer() const { return buffer_.buffer(); }
-
+  // Gets ID of the buffer client. All DetachedBuffer clients derived from the
+  // same buffer in bufferhubd share the same buffer id.
   int id() const { return id_; }
 
+  // Returns the current value of MetadataHeader::buffer_state.
+  uint64_t buffer_state() { return metadata_header_->buffer_state.load(); }
+
+  // A state mask which is unique to a buffer hub client among all its siblings
+  // sharing the same concrete graphic buffer.
+  uint64_t buffer_state_bit() const { return buffer_state_bit_; }
+
   // Returns true if the buffer holds an open PDX channels towards bufferhubd.
   bool IsConnected() const { return client_.IsValid(); }
 
@@ -57,10 +81,8 @@
   // return. Further IPCs towards this channel will return error.
   pdx::Status<pdx::LocalChannelHandle> Promote();
 
-  // Takes the underlying graphic buffer out of this DetachedBuffer. This call
-  // immediately invalidates this DetachedBuffer object and transfers the
-  // underlying pdx::LocalChannelHandle into the GraphicBuffer.
-  sp<GraphicBuffer> TakeGraphicBuffer();
+  // Creates a DetachedBuffer from an existing one.
+  pdx::Status<pdx::LocalChannelHandle> Duplicate();
 
  private:
   DetachedBuffer(uint32_t width, uint32_t height, uint32_t layer_count,
@@ -72,7 +94,18 @@
 
   // Global id for the buffer that is consistent across processes.
   int id_;
+  uint64_t buffer_state_bit_;
+
+  // The concrete Ion buffers.
   IonBuffer buffer_;
+  IonBuffer metadata_buffer_;
+
+  // buffer metadata.
+  size_t user_metadata_size_ = 0;
+  BufferHubDefs::MetadataHeader* metadata_header_ = nullptr;
+  void* user_metadata_ptr_ = nullptr;
+
+  // PDX backend.
   BufferHubClient client_;
 };
 
diff --git a/libs/vr/libbufferhub/include/private/dvr/producer_buffer.h b/libs/vr/libbufferhub/include/private/dvr/producer_buffer.h
new file mode 100644
index 0000000..b5e1c5b
--- /dev/null
+++ b/libs/vr/libbufferhub/include/private/dvr/producer_buffer.h
@@ -0,0 +1,109 @@
+#ifndef ANDROID_DVR_PRODUCER_BUFFER_H_
+#define ANDROID_DVR_PRODUCER_BUFFER_H_
+
+#include <private/dvr/buffer_hub_base.h>
+
+namespace android {
+namespace dvr {
+
+// BufferProducer was originally poorly named and gets easily confused with
+// IGraphicBufferProducer. Actually, BufferProducer is a single buffer that can
+// produce (i.e. write) data into a buffer, but it doesn't produce buffer. On
+// the other hand, IGraphicBufferProducer is the producer end of a BufferQueue
+// and it is used to produce buffers.
+//
+// TODO(b/116855254): Remove this typedef once rename is complete in other
+// projects and/or branches.
+typedef class ProducerBuffer BufferProducer;
+
+// This represents a writable buffer. Calling Post notifies all clients and
+// makes the buffer read-only. Call Gain to acquire write access. A buffer
+// may have many consumers.
+//
+// The user of ProducerBuffer is responsible with making sure that the Post() is
+// done with the correct metadata type and size. The user is also responsible
+// for making sure that remote ends (BufferConsumers) are also using the correct
+// metadata when acquiring the buffer. The API guarantees that a Post() with a
+// metadata of wrong size will fail. However, it currently does not do any
+// type checking.
+// The API also assumes that metadata is a serializable type (plain old data).
+class ProducerBuffer : public pdx::ClientBase<ProducerBuffer, BufferHubBase> {
+ public:
+  // Imports a bufferhub producer channel, assuming ownership of its handle.
+  static std::unique_ptr<ProducerBuffer> Import(LocalChannelHandle channel);
+  static std::unique_ptr<ProducerBuffer> Import(
+      Status<LocalChannelHandle> status);
+
+  // Asynchronously posts a buffer. The fence and metadata are passed to
+  // consumer via shared fd and shared memory.
+  int PostAsync(const DvrNativeBufferMetadata* meta,
+                const LocalHandle& ready_fence);
+
+  // Post this buffer, passing |ready_fence| to the consumers. The bytes in
+  // |meta| are passed unaltered to the consumers. The producer must not modify
+  // the buffer until it is re-gained.
+  // This returns zero or a negative unix error code.
+  int Post(const LocalHandle& ready_fence, const void* meta,
+           size_t user_metadata_size);
+
+  int Post(const LocalHandle& ready_fence) {
+    return Post(ready_fence, nullptr, 0);
+  }
+
+  template <typename Meta, typename = typename std::enable_if<
+                               !std::is_void<Meta>::value>::type>
+  int Post(const LocalHandle& ready_fence, const Meta& meta) {
+    return Post(ready_fence, &meta, sizeof(meta));
+  }
+
+  // Attempt to re-gain the buffer for writing. If |release_fence| is valid, it
+  // must be waited on before using the buffer. If it is not valid then the
+  // buffer is free for immediate use. This call will only succeed if the buffer
+  // is in the released state.
+  // This returns zero or a negative unix error code.
+  int Gain(LocalHandle* release_fence);
+  int GainAsync();
+
+  // Asynchronously marks a released buffer as gained. This method is similar to
+  // the synchronous version above, except that it does not wait for BufferHub
+  // to acknowledge success or failure. Because of the asynchronous nature of
+  // the underlying message, no error is returned if this method is called when
+  // the buffer is in an incorrect state. Returns zero if sending the message
+  // succeeded, or a negative errno code if local error check fails.
+  int GainAsync(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
+
+  // Detaches a ProducerBuffer from an existing producer/consumer set. Can only
+  // be called when a producer buffer has exclusive access to the buffer (i.e.
+  // in the gain'ed state). On the successful return of the IPC call, a new
+  // LocalChannelHandle representing a detached buffer will be returned and all
+  // existing producer and consumer channels will be closed. Further IPCs
+  // towards those channels will return error.
+  Status<LocalChannelHandle> Detach();
+
+ private:
+  friend BASE;
+
+  // Constructors are automatically exposed through ProducerBuffer::Create(...)
+  // static template methods inherited from ClientBase, which take the same
+  // arguments as the constructors.
+
+  // Constructs a buffer with the given geometry and parameters.
+  ProducerBuffer(uint32_t width, uint32_t height, uint32_t format,
+                 uint64_t usage, size_t metadata_size = 0);
+
+  // Constructs a blob (flat) buffer with the given usage flags.
+  ProducerBuffer(uint64_t usage, size_t size);
+
+  // Imports the given file handle to a producer channel, taking ownership.
+  explicit ProducerBuffer(LocalChannelHandle channel);
+
+  // Local state transition helpers.
+  int LocalGain(DvrNativeBufferMetadata* out_meta, LocalHandle* out_fence);
+  int LocalPost(const DvrNativeBufferMetadata* meta,
+                const LocalHandle& ready_fence);
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_PRODUCER_BUFFER_H_
diff --git a/libs/vr/libbufferhub/producer_buffer.cpp b/libs/vr/libbufferhub/producer_buffer.cpp
new file mode 100644
index 0000000..c4f1a3b
--- /dev/null
+++ b/libs/vr/libbufferhub/producer_buffer.cpp
@@ -0,0 +1,243 @@
+#include <private/dvr/producer_buffer.h>
+
+using android::pdx::LocalChannelHandle;
+using android::pdx::LocalHandle;
+using android::pdx::Status;
+
+namespace android {
+namespace dvr {
+
+ProducerBuffer::ProducerBuffer(uint32_t width, uint32_t height, uint32_t format,
+                               uint64_t usage, size_t user_metadata_size)
+    : BASE(BufferHubRPC::kClientPath) {
+  ATRACE_NAME("ProducerBuffer::ProducerBuffer");
+  ALOGD_IF(TRACE,
+           "ProducerBuffer::ProducerBuffer: fd=%d width=%u height=%u format=%u "
+           "usage=%" PRIx64 " user_metadata_size=%zu",
+           event_fd(), width, height, format, usage, user_metadata_size);
+
+  auto status = InvokeRemoteMethod<BufferHubRPC::CreateBuffer>(
+      width, height, format, usage, user_metadata_size);
+  if (!status) {
+    ALOGE(
+        "ProducerBuffer::ProducerBuffer: Failed to create producer buffer: %s",
+        status.GetErrorMessage().c_str());
+    Close(-status.error());
+    return;
+  }
+
+  const int ret = ImportBuffer();
+  if (ret < 0) {
+    ALOGE(
+        "ProducerBuffer::ProducerBuffer: Failed to import producer buffer: %s",
+        strerror(-ret));
+    Close(ret);
+  }
+}
+
+ProducerBuffer::ProducerBuffer(uint64_t usage, size_t size)
+    : BASE(BufferHubRPC::kClientPath) {
+  ATRACE_NAME("ProducerBuffer::ProducerBuffer");
+  ALOGD_IF(TRACE, "ProducerBuffer::ProducerBuffer: usage=%" PRIx64 " size=%zu",
+           usage, size);
+  const int width = static_cast<int>(size);
+  const int height = 1;
+  const int format = HAL_PIXEL_FORMAT_BLOB;
+  const size_t user_metadata_size = 0;
+
+  auto status = InvokeRemoteMethod<BufferHubRPC::CreateBuffer>(
+      width, height, format, usage, user_metadata_size);
+  if (!status) {
+    ALOGE("ProducerBuffer::ProducerBuffer: Failed to create blob: %s",
+          status.GetErrorMessage().c_str());
+    Close(-status.error());
+    return;
+  }
+
+  const int ret = ImportBuffer();
+  if (ret < 0) {
+    ALOGE(
+        "ProducerBuffer::ProducerBuffer: Failed to import producer buffer: %s",
+        strerror(-ret));
+    Close(ret);
+  }
+}
+
+ProducerBuffer::ProducerBuffer(LocalChannelHandle channel)
+    : BASE(std::move(channel)) {
+  const int ret = ImportBuffer();
+  if (ret < 0) {
+    ALOGE(
+        "ProducerBuffer::ProducerBuffer: Failed to import producer buffer: %s",
+        strerror(-ret));
+    Close(ret);
+  }
+}
+
+int ProducerBuffer::LocalPost(const DvrNativeBufferMetadata* meta,
+                              const LocalHandle& ready_fence) {
+  if (const int error = CheckMetadata(meta->user_metadata_size))
+    return error;
+
+  // Check invalid state transition.
+  uint64_t buffer_state = buffer_state_->load();
+  if (!BufferHubDefs::IsBufferGained(buffer_state)) {
+    ALOGE("ProducerBuffer::LocalPost: not gained, id=%d state=%" PRIx64 ".",
+          id(), buffer_state);
+    return -EBUSY;
+  }
+
+  // Copy the canonical metadata.
+  void* metadata_ptr = reinterpret_cast<void*>(&metadata_header_->metadata);
+  memcpy(metadata_ptr, meta, sizeof(DvrNativeBufferMetadata));
+  // Copy extra user requested metadata.
+  if (meta->user_metadata_ptr && meta->user_metadata_size) {
+    void* metadata_src = reinterpret_cast<void*>(meta->user_metadata_ptr);
+    memcpy(user_metadata_ptr_, metadata_src, meta->user_metadata_size);
+  }
+
+  // Send out the acquire fence through the shared epoll fd. Note that during
+  // posting no consumer is not expected to be polling on the fence.
+  if (const int error = UpdateSharedFence(ready_fence, shared_acquire_fence_))
+    return error;
+
+  // Set the producer bit atomically to transit into posted state.
+  BufferHubDefs::ModifyBufferState(buffer_state_, 0ULL,
+                                   BufferHubDefs::kProducerStateBit);
+  return 0;
+}
+
+int ProducerBuffer::Post(const LocalHandle& ready_fence, const void* meta,
+                         size_t user_metadata_size) {
+  ATRACE_NAME("ProducerBuffer::Post");
+
+  // Populate cononical metadata for posting.
+  DvrNativeBufferMetadata canonical_meta;
+  canonical_meta.user_metadata_ptr = reinterpret_cast<uint64_t>(meta);
+  canonical_meta.user_metadata_size = user_metadata_size;
+
+  if (const int error = LocalPost(&canonical_meta, ready_fence))
+    return error;
+
+  return ReturnStatusOrError(InvokeRemoteMethod<BufferHubRPC::ProducerPost>(
+      BorrowedFence(ready_fence.Borrow())));
+}
+
+int ProducerBuffer::PostAsync(const DvrNativeBufferMetadata* meta,
+                              const LocalHandle& ready_fence) {
+  ATRACE_NAME("ProducerBuffer::PostAsync");
+
+  if (const int error = LocalPost(meta, ready_fence))
+    return error;
+
+  return ReturnStatusOrError(SendImpulse(BufferHubRPC::ProducerPost::Opcode));
+}
+
+int ProducerBuffer::LocalGain(DvrNativeBufferMetadata* out_meta,
+                              LocalHandle* out_fence) {
+  uint64_t buffer_state = buffer_state_->load();
+  ALOGD_IF(TRACE, "ProducerBuffer::LocalGain: buffer=%d, state=%" PRIx64 ".",
+           id(), buffer_state);
+
+  if (!out_meta)
+    return -EINVAL;
+
+  if (!BufferHubDefs::IsBufferReleased(buffer_state)) {
+    if (BufferHubDefs::IsBufferGained(buffer_state)) {
+      // We don't want to log error when gaining a newly allocated
+      // buffer.
+      ALOGI("ProducerBuffer::LocalGain: already gained id=%d.", id());
+      return -EALREADY;
+    }
+    ALOGE("ProducerBuffer::LocalGain: not released id=%d state=%" PRIx64 ".",
+          id(), buffer_state);
+    return -EBUSY;
+  }
+
+  // Canonical metadata is undefined on Gain. Except for user_metadata and
+  // release_fence_mask. Fill in the user_metadata_ptr in address space of the
+  // local process.
+  if (metadata_header_->metadata.user_metadata_size && user_metadata_ptr_) {
+    out_meta->user_metadata_size =
+        metadata_header_->metadata.user_metadata_size;
+    out_meta->user_metadata_ptr =
+        reinterpret_cast<uint64_t>(user_metadata_ptr_);
+  } else {
+    out_meta->user_metadata_size = 0;
+    out_meta->user_metadata_ptr = 0;
+  }
+
+  uint64_t fence_state = fence_state_->load();
+  // If there is an release fence from consumer, we need to return it.
+  if (fence_state & BufferHubDefs::kConsumerStateMask) {
+    *out_fence = shared_release_fence_.Duplicate();
+    out_meta->release_fence_mask =
+        fence_state & BufferHubDefs::kConsumerStateMask;
+  }
+
+  // Clear out all bits and the buffer is now back to gained state.
+  buffer_state_->store(0ULL);
+  return 0;
+}
+
+int ProducerBuffer::Gain(LocalHandle* release_fence) {
+  ATRACE_NAME("ProducerBuffer::Gain");
+
+  DvrNativeBufferMetadata meta;
+  if (const int error = LocalGain(&meta, release_fence))
+    return error;
+
+  auto status = InvokeRemoteMethod<BufferHubRPC::ProducerGain>();
+  if (!status)
+    return -status.error();
+  return 0;
+}
+
+int ProducerBuffer::GainAsync(DvrNativeBufferMetadata* out_meta,
+                              LocalHandle* release_fence) {
+  ATRACE_NAME("ProducerBuffer::GainAsync");
+
+  if (const int error = LocalGain(out_meta, release_fence))
+    return error;
+
+  return ReturnStatusOrError(SendImpulse(BufferHubRPC::ProducerGain::Opcode));
+}
+
+int ProducerBuffer::GainAsync() {
+  DvrNativeBufferMetadata meta;
+  LocalHandle fence;
+  return GainAsync(&meta, &fence);
+}
+
+std::unique_ptr<ProducerBuffer> ProducerBuffer::Import(
+    LocalChannelHandle channel) {
+  ALOGD_IF(TRACE, "ProducerBuffer::Import: channel=%d", channel.value());
+  return ProducerBuffer::Create(std::move(channel));
+}
+
+std::unique_ptr<ProducerBuffer> ProducerBuffer::Import(
+    Status<LocalChannelHandle> status) {
+  return Import(status ? status.take()
+                       : LocalChannelHandle{nullptr, -status.error()});
+}
+
+Status<LocalChannelHandle> ProducerBuffer::Detach() {
+  uint64_t buffer_state = buffer_state_->load();
+  if (!BufferHubDefs::IsBufferGained(buffer_state)) {
+    // Can only detach a ProducerBuffer when it's in gained state.
+    ALOGW("ProducerBuffer::Detach: The buffer (id=%d, state=0x%" PRIx64
+          ") is not in gained state.",
+          id(), buffer_state);
+    return {};
+  }
+
+  Status<LocalChannelHandle> status =
+      InvokeRemoteMethod<BufferHubRPC::ProducerBufferDetach>();
+  ALOGE_IF(!status,
+           "ProducerBuffer::Detach: Failed to detach buffer (id=%d): %s.", id(),
+           status.GetErrorMessage().c_str());
+  return status;
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libbufferhubqueue/benchmarks/Android.bp b/libs/vr/libbufferhubqueue/benchmarks/Android.bp
index 5089b87..ef1eed6 100644
--- a/libs/vr/libbufferhubqueue/benchmarks/Android.bp
+++ b/libs/vr/libbufferhubqueue/benchmarks/Android.bp
@@ -5,7 +5,7 @@
         "libbase",
         "libbinder",
         "libcutils",
-        "libdvr",
+        "libdvr.google",
         "libgui",
         "liblog",
         "libhardware",
diff --git a/libs/vr/libbufferhubqueue/benchmarks/buffer_transport_benchmark.cpp b/libs/vr/libbufferhubqueue/benchmarks/buffer_transport_benchmark.cpp
index 4ca8671..b2b4d7a 100644
--- a/libs/vr/libbufferhubqueue/benchmarks/buffer_transport_benchmark.cpp
+++ b/libs/vr/libbufferhubqueue/benchmarks/buffer_transport_benchmark.cpp
@@ -206,7 +206,7 @@
 class DvrApi {
  public:
   DvrApi() {
-    handle_ = dlopen("libdvr.so", RTLD_NOW | RTLD_LOCAL);
+    handle_ = dlopen("libdvr.google.so", RTLD_NOW | RTLD_LOCAL);
     CHECK(handle_);
 
     auto dvr_get_api =
diff --git a/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp b/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
index 8feb1cd..e1c1aa9 100644
--- a/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
+++ b/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
@@ -278,7 +278,7 @@
 }
 
 Status<void> BufferHubQueue::AddBuffer(
-    const std::shared_ptr<BufferHubBuffer>& buffer, size_t slot) {
+    const std::shared_ptr<BufferHubBase>& buffer, size_t slot) {
   ALOGD_IF(TRACE, "BufferHubQueue::AddBuffer: buffer_id=%d slot=%zu",
            buffer->id(), slot);
 
@@ -356,8 +356,8 @@
   }
 }
 
-Status<std::shared_ptr<BufferHubBuffer>> BufferHubQueue::Dequeue(int timeout,
-                                                                 size_t* slot) {
+Status<std::shared_ptr<BufferHubBase>> BufferHubQueue::Dequeue(int timeout,
+                                                               size_t* slot) {
   ALOGD_IF(TRACE, "BufferHubQueue::Dequeue: count=%zu, timeout=%d", count(),
            timeout);
 
@@ -372,7 +372,7 @@
   PDX_TRACE_FORMAT("buffer|buffer_id=%d;slot=%zu|", entry.buffer->id(),
                    entry.slot);
 
-  std::shared_ptr<BufferHubBuffer> buffer = std::move(entry.buffer);
+  std::shared_ptr<BufferHubBase> buffer = std::move(entry.buffer);
   *slot = entry.slot;
 
   available_buffers_.pop();
@@ -440,6 +440,10 @@
 Status<std::vector<size_t>> ProducerQueue::AllocateBuffers(
     uint32_t width, uint32_t height, uint32_t layer_count, uint32_t format,
     uint64_t usage, size_t buffer_count) {
+  if (buffer_count == 0) {
+    return {std::vector<size_t>()};
+  }
+
   if (capacity() + buffer_count > kMaxQueueCapacity) {
     ALOGE(
         "ProducerQueue::AllocateBuffers: queue is at capacity: %zu, cannot "
@@ -481,10 +485,13 @@
     }
   }
 
-  if (buffer_slots.size() == 0) {
-    // Error out if no buffer is allocated and improted.
-    ALOGE_IF(TRACE, "ProducerQueue::AllocateBuffers: no buffer allocated.");
-    ErrorStatus(ENOMEM);
+  if (buffer_slots.size() != buffer_count) {
+    // Error out if the count of imported buffer(s) is not correct.
+    ALOGE(
+        "ProducerQueue::AllocateBuffers: requested to import %zu "
+        "buffers, but actually imported %zu buffers.",
+        buffer_count, buffer_slots.size());
+    return ErrorStatus(ENOMEM);
   }
 
   return {std::move(buffer_slots)};
@@ -503,11 +510,6 @@
     return status.error_status();
   }
 
-  if (status.get().size() == 0) {
-    ALOGE_IF(TRACE, "ProducerQueue::AllocateBuffer: no buffer allocated.");
-    ErrorStatus(ENOMEM);
-  }
-
   return {status.get()[0]};
 }
 
@@ -524,6 +526,40 @@
   return BufferHubQueue::Enqueue({buffer, slot, 0ULL});
 }
 
+Status<size_t> ProducerQueue::InsertBuffer(
+    const std::shared_ptr<BufferProducer>& buffer) {
+  if (buffer == nullptr ||
+      !BufferHubDefs::IsBufferGained(buffer->buffer_state())) {
+    ALOGE(
+        "ProducerQueue::InsertBuffer: Can only insert a buffer when it's in "
+        "gained state.");
+    return ErrorStatus(EINVAL);
+  }
+
+  auto status_or_slot =
+      InvokeRemoteMethod<BufferHubRPC::ProducerQueueInsertBuffer>(
+          buffer->cid());
+  if (!status_or_slot) {
+    ALOGE(
+        "ProducerQueue::InsertBuffer: Failed to insert producer buffer: "
+        "buffer_cid=%d, error: %s.",
+        buffer->cid(), status_or_slot.GetErrorMessage().c_str());
+    return status_or_slot.error_status();
+  }
+
+  size_t slot = status_or_slot.get();
+
+  // Note that we are calling AddBuffer() from the base class to explicitly
+  // avoid Enqueue() the BufferProducer.
+  auto status = BufferHubQueue::AddBuffer(buffer, slot);
+  if (!status) {
+    ALOGE("ProducerQueue::InsertBuffer: Failed to add buffer: %s.",
+          status.GetErrorMessage().c_str());
+    return status.error_status();
+  }
+  return {slot};
+}
+
 Status<void> ProducerQueue::RemoveBuffer(size_t slot) {
   auto status =
       InvokeRemoteMethod<BufferHubRPC::ProducerQueueRemoveBuffer>(slot);
diff --git a/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h b/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h
index 60e1c4b..c69002d 100644
--- a/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h
+++ b/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h
@@ -31,13 +31,13 @@
 
 class ConsumerQueue;
 
-// |BufferHubQueue| manages a queue of |BufferHubBuffer|s. Buffers are
+// |BufferHubQueue| manages a queue of |BufferHubBase|s. Buffers are
 // automatically re-requeued when released by the remote side.
 class BufferHubQueue : public pdx::Client {
  public:
   using BufferAvailableCallback = std::function<void()>;
   using BufferRemovedCallback =
-      std::function<void(const std::shared_ptr<BufferHubBuffer>&)>;
+      std::function<void(const std::shared_ptr<BufferHubBase>&)>;
 
   virtual ~BufferHubQueue() {}
 
@@ -93,7 +93,7 @@
                                                       : -1;
   }
 
-  std::shared_ptr<BufferHubBuffer> GetBuffer(size_t slot) const {
+  std::shared_ptr<BufferHubBase> GetBuffer(size_t slot) const {
     return buffers_[slot];
   }
 
@@ -142,7 +142,7 @@
 
   // Register a buffer for management by the queue. Used by subclasses to add a
   // buffer to internal bookkeeping.
-  pdx::Status<void> AddBuffer(const std::shared_ptr<BufferHubBuffer>& buffer,
+  pdx::Status<void> AddBuffer(const std::shared_ptr<BufferHubBase>& buffer,
                               size_t slot);
 
   // Called by ProducerQueue::RemoveBuffer and ConsumerQueue::RemoveBuffer only
@@ -158,8 +158,8 @@
   // block. Specifying a timeout of -1 causes Dequeue() to block indefinitely,
   // while specifying a timeout equal to zero cause Dequeue() to return
   // immediately, even if no buffers are available.
-  pdx::Status<std::shared_ptr<BufferHubBuffer>> Dequeue(int timeout,
-                                                        size_t* slot);
+  pdx::Status<std::shared_ptr<BufferHubBase>> Dequeue(int timeout,
+                                                      size_t* slot);
 
   // Waits for buffers to become available and adds them to the available queue.
   bool WaitForBuffers(int timeout);
@@ -172,10 +172,10 @@
   // per-buffer data.
   struct Entry {
     Entry() : slot(0) {}
-    Entry(const std::shared_ptr<BufferHubBuffer>& in_buffer, size_t in_slot,
+    Entry(const std::shared_ptr<BufferHubBase>& in_buffer, size_t in_slot,
           uint64_t in_index)
         : buffer(in_buffer), slot(in_slot), index(in_index) {}
-    Entry(const std::shared_ptr<BufferHubBuffer>& in_buffer,
+    Entry(const std::shared_ptr<BufferHubBase>& in_buffer,
           std::unique_ptr<uint8_t[]> in_metadata, pdx::LocalHandle in_fence,
           size_t in_slot)
         : buffer(in_buffer),
@@ -185,7 +185,7 @@
     Entry(Entry&&) = default;
     Entry& operator=(Entry&&) = default;
 
-    std::shared_ptr<BufferHubBuffer> buffer;
+    std::shared_ptr<BufferHubBase> buffer;
     std::unique_ptr<uint8_t[]> metadata;
     pdx::LocalHandle fence;
     size_t slot;
@@ -250,7 +250,7 @@
   // Tracks the buffers belonging to this queue. Buffers are stored according to
   // "slot" in this vector. Each slot is a logical id of the buffer within this
   // queue regardless of its queue position or presence in the ring buffer.
-  std::array<std::shared_ptr<BufferHubBuffer>, kMaxQueueCapacity> buffers_;
+  std::array<std::shared_ptr<BufferHubBase>, kMaxQueueCapacity> buffers_;
 
   // Buffers and related data that are available for dequeue.
   std::priority_queue<Entry, std::vector<Entry>, EntryComparator>
@@ -331,6 +331,13 @@
   pdx::Status<void> AddBuffer(const std::shared_ptr<BufferProducer>& buffer,
                               size_t slot);
 
+  // Inserts a ProducerBuffer into the queue. On success, the method returns the
+  // |slot| number where the new buffer gets inserted. Note that the buffer
+  // being inserted should be in Gain'ed state prior to the call and it's
+  // considered as already Dequeued when the function returns.
+  pdx::Status<size_t> InsertBuffer(
+      const std::shared_ptr<BufferProducer>& buffer);
+
   // Remove producer buffer from the queue.
   pdx::Status<void> RemoveBuffer(size_t slot) override;
 
diff --git a/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp b/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp
index 47a2734..046df54 100644
--- a/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp
+++ b/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp
@@ -181,6 +181,40 @@
   }
 }
 
+TEST_F(BufferHubQueueTest, TestInsertBuffer) {
+  ASSERT_TRUE(CreateProducerQueue(config_builder_.Build(), UsagePolicy{}));
+
+  consumer_queue_ = producer_queue_->CreateConsumerQueue();
+  ASSERT_TRUE(consumer_queue_ != nullptr);
+  EXPECT_EQ(producer_queue_->capacity(), 0);
+  EXPECT_EQ(consumer_queue_->capacity(), 0);
+
+  std::shared_ptr<BufferProducer> p1 = BufferProducer::Create(
+      kBufferWidth, kBufferHeight, kBufferFormat, kBufferUsage, 0);
+  ASSERT_TRUE(p1 != nullptr);
+
+  // Inserting a posted buffer will fail.
+  DvrNativeBufferMetadata meta;
+  EXPECT_EQ(p1->PostAsync(&meta, LocalHandle()), 0);
+  auto status_or_slot = producer_queue_->InsertBuffer(p1);
+  EXPECT_FALSE(status_or_slot.ok());
+  EXPECT_EQ(status_or_slot.error(), EINVAL);
+
+  // Inserting a gained buffer will succeed.
+  std::shared_ptr<BufferProducer> p2 = BufferProducer::Create(
+      kBufferWidth, kBufferHeight, kBufferFormat, kBufferUsage);
+  ASSERT_TRUE(p2 != nullptr);
+  status_or_slot = producer_queue_->InsertBuffer(p2);
+  EXPECT_TRUE(status_or_slot.ok());
+  // This is the first buffer inserted, should take slot 0.
+  size_t slot = status_or_slot.get();
+  EXPECT_EQ(slot, 0);
+
+  // Wait and expect the consumer to kick up the newly inserted buffer.
+  WaitAndHandleOnce(consumer_queue_.get(), kTimeoutMs);
+  EXPECT_EQ(consumer_queue_->capacity(), 1ULL);
+}
+
 TEST_F(BufferHubQueueTest, TestRemoveBuffer) {
   ASSERT_TRUE(CreateProducerQueue(config_builder_.Build(), UsagePolicy{}));
   DvrNativeBufferMetadata mo;
@@ -528,6 +562,30 @@
   ASSERT_EQ(cs2, ps2);
 }
 
+TEST_F(BufferHubQueueTest, TestAllocateTwoBuffers) {
+  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
+  ASSERT_EQ(producer_queue_->capacity(), 0);
+  auto status = producer_queue_->AllocateBuffers(
+      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
+      kBufferUsage, /*buffer_count=*/2);
+  ASSERT_TRUE(status.ok());
+  std::vector<size_t> buffer_slots = status.take();
+  ASSERT_EQ(buffer_slots.size(), 2);
+  ASSERT_EQ(producer_queue_->capacity(), 2);
+}
+
+TEST_F(BufferHubQueueTest, TestAllocateZeroBuffers) {
+  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
+  ASSERT_EQ(producer_queue_->capacity(), 0);
+  auto status = producer_queue_->AllocateBuffers(
+      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
+      kBufferUsage, /*buffer_count=*/0);
+  ASSERT_TRUE(status.ok());
+  std::vector<size_t> buffer_slots = status.take();
+  ASSERT_EQ(buffer_slots.size(), 0);
+  ASSERT_EQ(producer_queue_->capacity(), 0);
+}
+
 TEST_F(BufferHubQueueTest, TestUsageSetMask) {
   const uint32_t set_mask = GRALLOC_USAGE_SW_WRITE_OFTEN;
   ASSERT_TRUE(
diff --git a/libs/vr/libdisplay/Android.bp b/libs/vr/libdisplay/Android.bp
index 9c67881..8c354fb 100644
--- a/libs/vr/libdisplay/Android.bp
+++ b/libs/vr/libdisplay/Android.bp
@@ -16,8 +16,8 @@
     "display_client.cpp",
     "display_manager_client.cpp",
     "display_protocol.cpp",
-    "vsync_client.cpp",
     "shared_buffer_helpers.cpp",
+    "vsync_service.cpp",
 ]
 
 localIncludeFiles = [
diff --git a/libs/vr/libdisplay/include/private/dvr/vsync_client.h b/libs/vr/libdisplay/include/private/dvr/vsync_client.h
deleted file mode 100644
index 1eeb80e..0000000
--- a/libs/vr/libdisplay/include/private/dvr/vsync_client.h
+++ /dev/null
@@ -1,69 +0,0 @@
-#ifndef ANDROID_DVR_VSYNC_CLIENT_H_
-#define ANDROID_DVR_VSYNC_CLIENT_H_
-
-#include <stdint.h>
-
-#include <pdx/client.h>
-
-struct dvr_vsync_client {};
-
-namespace android {
-namespace dvr {
-
-/*
- * VSyncClient is a remote interface to the vsync service in displayd.
- * This class is used to wait for and retrieve information about the
- * display vsync.
- */
-class VSyncClient : public pdx::ClientBase<VSyncClient>,
-                    public dvr_vsync_client {
- public:
-  /*
-   * Wait for the next vsync signal.
-   * The timestamp (in ns) is written into *ts when ts is non-NULL.
-   */
-  int Wait(int64_t* timestamp_ns);
-
-  /*
-   * Returns the file descriptor used to communicate with the vsync system
-   * service or -1 on error.
-   */
-  int GetFd();
-
-  /*
-   * Clears the select/poll/epoll event so that subsequent calls to
-   * these will not signal until the next vsync.
-   */
-  int Acknowledge();
-
-  /*
-   * Get the timestamp of the last vsync event in ns. This call has
-   * the same side effect on events as Acknowledge(), which saves
-   * an IPC message.
-   */
-  int GetLastTimestamp(int64_t* timestamp_ns);
-
-  /*
-   * Get vsync scheduling info.
-   * Get the estimated timestamp of the next GPU lens warp preemption event in
-   * ns. Also returns the corresponding vsync count that the next lens warp
-   * operation will target. This call has the same side effect on events as
-   * Acknowledge(), which saves an IPC message.
-   */
-  int GetSchedInfo(int64_t* vsync_period_ns, int64_t* next_timestamp_ns,
-                   uint32_t* next_vsync_count);
-
- private:
-  friend BASE;
-
-  VSyncClient();
-  explicit VSyncClient(long timeout_ms);
-
-  VSyncClient(const VSyncClient&) = delete;
-  void operator=(const VSyncClient&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_VSYNC_CLIENT_H_
diff --git a/libs/vr/libdisplay/include/private/dvr/vsync_service.h b/libs/vr/libdisplay/include/private/dvr/vsync_service.h
new file mode 100644
index 0000000..152464a
--- /dev/null
+++ b/libs/vr/libdisplay/include/private/dvr/vsync_service.h
@@ -0,0 +1,65 @@
+#ifndef ANDROID_DVR_VSYNC_SERVICE_H_
+#define ANDROID_DVR_VSYNC_SERVICE_H_
+
+#include <binder/IInterface.h>
+
+namespace android {
+namespace dvr {
+
+class IVsyncCallback : public IInterface {
+ public:
+  DECLARE_META_INTERFACE(VsyncCallback)
+
+  enum {
+    ON_VSYNC = IBinder::FIRST_CALL_TRANSACTION
+  };
+
+  virtual status_t onVsync(int64_t vsync_timestamp) = 0;
+};
+
+class BnVsyncCallback : public BnInterface<IVsyncCallback> {
+ public:
+  virtual status_t onTransact(uint32_t code, const Parcel& data,
+                              Parcel* reply, uint32_t flags = 0);
+};
+
+// Register a callback with IVsyncService to be notified of vsync events and
+// timestamps. There's also a shared memory vsync buffer defined in
+// dvr_shared_buffers.h. IVsyncService has advantages over the vsync shared
+// memory buffer that make it preferable in certain situations:
+//
+// 1. The shared memory buffer lifetime is controlled by VrCore. IVsyncService
+// is always available as long as surface flinger is running.
+//
+// 2. IVsyncService will make a binder callback when a vsync event occurs. This
+// allows the client to not write code to implement periodic "get the latest
+// vsync" calls, which is necessary with the vsync shared memory buffer.
+//
+// 3. The IVsyncService provides the real vsync timestamp reported by hardware
+// composer, whereas the vsync shared memory buffer only has predicted vsync
+// times.
+class IVsyncService : public IInterface {
+public:
+  DECLARE_META_INTERFACE(VsyncService)
+
+  static const char* GetServiceName() { return "vrflinger_vsync"; }
+
+  enum {
+    REGISTER_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
+    UNREGISTER_CALLBACK
+  };
+
+  virtual status_t registerCallback(const sp<IVsyncCallback> callback) = 0;
+  virtual status_t unregisterCallback(const sp<IVsyncCallback> callback) = 0;
+};
+
+class BnVsyncService : public BnInterface<IVsyncService> {
+ public:
+  virtual status_t onTransact(uint32_t code, const Parcel& data,
+                              Parcel* reply, uint32_t flags = 0);
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_VSYNC_SERVICE_H_
diff --git a/libs/vr/libdisplay/vsync_client.cpp b/libs/vr/libdisplay/vsync_client.cpp
deleted file mode 100644
index bc6cf6c..0000000
--- a/libs/vr/libdisplay/vsync_client.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-#include "include/private/dvr/vsync_client.h"
-
-#include <log/log.h>
-
-#include <pdx/default_transport/client_channel_factory.h>
-#include <private/dvr/display_protocol.h>
-
-using android::dvr::display::VSyncProtocol;
-using android::pdx::Transaction;
-
-namespace android {
-namespace dvr {
-
-VSyncClient::VSyncClient(long timeout_ms)
-    : BASE(pdx::default_transport::ClientChannelFactory::Create(
-               VSyncProtocol::kClientPath),
-           timeout_ms) {}
-
-VSyncClient::VSyncClient()
-    : BASE(pdx::default_transport::ClientChannelFactory::Create(
-          VSyncProtocol::kClientPath)) {}
-
-int VSyncClient::Wait(int64_t* timestamp_ns) {
-  auto status = InvokeRemoteMethod<VSyncProtocol::Wait>();
-  if (!status) {
-    ALOGE("VSyncClient::Wait: Failed to wait for vsync: %s",
-          status.GetErrorMessage().c_str());
-    return -status.error();
-  }
-
-  if (timestamp_ns != nullptr) {
-    *timestamp_ns = status.get();
-  }
-  return 0;
-}
-
-int VSyncClient::GetFd() { return event_fd(); }
-
-int VSyncClient::GetLastTimestamp(int64_t* timestamp_ns) {
-  auto status = InvokeRemoteMethod<VSyncProtocol::GetLastTimestamp>();
-  if (!status) {
-    ALOGE("VSyncClient::GetLastTimestamp: Failed to get vsync timestamp: %s",
-          status.GetErrorMessage().c_str());
-    return -status.error();
-  }
-  *timestamp_ns = status.get();
-  return 0;
-}
-
-int VSyncClient::GetSchedInfo(int64_t* vsync_period_ns, int64_t* timestamp_ns,
-                              uint32_t* next_vsync_count) {
-  if (!vsync_period_ns || !timestamp_ns || !next_vsync_count)
-    return -EINVAL;
-
-  auto status = InvokeRemoteMethod<VSyncProtocol::GetSchedInfo>();
-  if (!status) {
-    ALOGE("VSyncClient::GetSchedInfo:: Failed to get warp timestamp: %s",
-          status.GetErrorMessage().c_str());
-    return -status.error();
-  }
-
-  *vsync_period_ns = status.get().vsync_period_ns;
-  *timestamp_ns = status.get().timestamp_ns;
-  *next_vsync_count = status.get().next_vsync_count;
-  return 0;
-}
-
-int VSyncClient::Acknowledge() {
-  auto status = InvokeRemoteMethod<VSyncProtocol::Acknowledge>();
-  ALOGE_IF(!status, "VSuncClient::Acknowledge: Failed to ack vsync because: %s",
-           status.GetErrorMessage().c_str());
-  return ReturnStatusOrError(status);
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libdisplay/vsync_service.cpp b/libs/vr/libdisplay/vsync_service.cpp
new file mode 100644
index 0000000..43b1196
--- /dev/null
+++ b/libs/vr/libdisplay/vsync_service.cpp
@@ -0,0 +1,146 @@
+#include "include/private/dvr/vsync_service.h"
+
+#include <binder/Parcel.h>
+#include <log/log.h>
+
+namespace android {
+namespace dvr {
+
+status_t BnVsyncCallback::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
+  switch (code) {
+    case ON_VSYNC: {
+      CHECK_INTERFACE(IVsyncCallback, data, reply);
+      int64_t vsync_timestamp = 0;
+      status_t result = data.readInt64(&vsync_timestamp);
+      if (result != NO_ERROR) {
+        ALOGE("onVsync failed to readInt64: %d", result);
+        return result;
+      }
+      onVsync(vsync_timestamp);
+      return NO_ERROR;
+    }
+    default: {
+      return BBinder::onTransact(code, data, reply, flags);
+    }
+  }
+}
+
+class BpVsyncCallback : public BpInterface<IVsyncCallback> {
+public:
+  explicit BpVsyncCallback(const sp<IBinder>& impl)
+      : BpInterface<IVsyncCallback>(impl) {}
+  virtual ~BpVsyncCallback() {}
+
+  virtual status_t onVsync(int64_t vsync_timestamp) {
+    Parcel data, reply;
+    status_t result = data.writeInterfaceToken(
+        IVsyncCallback::getInterfaceDescriptor());
+    if (result != NO_ERROR) {
+      ALOGE("onVsync failed to writeInterfaceToken: %d", result);
+      return result;
+    }
+    result = data.writeInt64(vsync_timestamp);
+    if (result != NO_ERROR) {
+      ALOGE("onVsync failed to writeInt64: %d", result);
+      return result;
+    }
+    result = remote()->transact(
+        BnVsyncCallback::ON_VSYNC, data, &reply, TF_ONE_WAY);
+    if (result != NO_ERROR) {
+      ALOGE("onVsync failed to transact: %d", result);
+      return result;
+    }
+    return result;
+  }
+};
+
+IMPLEMENT_META_INTERFACE(VsyncCallback, "android.dvr.IVsyncCallback");
+
+
+status_t BnVsyncService::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
+  switch (code) {
+    case REGISTER_CALLBACK: {
+      CHECK_INTERFACE(IVsyncService, data, reply);
+      sp<IBinder> callback;
+      status_t result = data.readStrongBinder(&callback);
+      if (result != NO_ERROR) {
+        ALOGE("registerCallback failed to readStrongBinder: %d", result);
+        return result;
+      }
+      registerCallback(interface_cast<IVsyncCallback>(callback));
+      return NO_ERROR;
+    }
+    case UNREGISTER_CALLBACK: {
+      CHECK_INTERFACE(IVsyncService, data, reply);
+      sp<IBinder> callback;
+      status_t result = data.readStrongBinder(&callback);
+      if (result != NO_ERROR) {
+        ALOGE("unregisterCallback failed to readStrongBinder: %d", result);
+        return result;
+      }
+      unregisterCallback(interface_cast<IVsyncCallback>(callback));
+      return NO_ERROR;
+    }
+    default: {
+      return BBinder::onTransact(code, data, reply, flags);
+    }
+  }
+}
+
+class BpVsyncService : public BpInterface<IVsyncService> {
+public:
+  explicit BpVsyncService(const sp<IBinder>& impl)
+      : BpInterface<IVsyncService>(impl) {}
+  virtual ~BpVsyncService() {}
+
+  virtual status_t registerCallback(const sp<IVsyncCallback> callback) {
+    Parcel data, reply;
+    status_t result = data.writeInterfaceToken(
+        IVsyncService::getInterfaceDescriptor());
+    if (result != NO_ERROR) {
+      ALOGE("registerCallback failed to writeInterfaceToken: %d", result);
+      return result;
+    }
+    result = data.writeStrongBinder(IInterface::asBinder(callback));
+    if (result != NO_ERROR) {
+      ALOGE("registerCallback failed to writeStrongBinder: %d", result);
+      return result;
+    }
+    result = remote()->transact(
+        BnVsyncService::REGISTER_CALLBACK, data, &reply);
+    if (result != NO_ERROR) {
+      ALOGE("registerCallback failed to transact: %d", result);
+      return result;
+    }
+    return result;
+  }
+
+  virtual status_t unregisterCallback(const sp<IVsyncCallback> callback) {
+    Parcel data, reply;
+    status_t result = data.writeInterfaceToken(
+        IVsyncService::getInterfaceDescriptor());
+    if (result != NO_ERROR) {
+      ALOGE("unregisterCallback failed to writeInterfaceToken: %d", result);
+      return result;
+    }
+    result = data.writeStrongBinder(IInterface::asBinder(callback));
+    if (result != NO_ERROR) {
+      ALOGE("unregisterCallback failed to writeStrongBinder: %d", result);
+      return result;
+    }
+    result = remote()->transact(
+        BnVsyncService::UNREGISTER_CALLBACK, data, &reply);
+    if (result != NO_ERROR) {
+      ALOGE("unregisterCallback failed to transact: %d", result);
+      return result;
+    }
+    return result;
+  }
+};
+
+IMPLEMENT_META_INTERFACE(VsyncService, "android.dvr.IVsyncService");
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libdvr/Android.bp b/libs/vr/libdvr/Android.bp
index 16906f5..81a9b2d 100644
--- a/libs/vr/libdvr/Android.bp
+++ b/libs/vr/libdvr/Android.bp
@@ -19,7 +19,14 @@
     vendor_available: true,
 }
 
+cc_library_headers {
+    name: "libdvr_private_headers",
+    export_include_dirs: ["."],
+    vendor_available: false,
+}
+
 cflags = [
+    "-DDVR_TRACKING_IMPLEMENTED=0",
     "-DLOG_TAG=\"libdvr\"",
     "-DTRACE=0",
     "-Wall",
@@ -36,7 +43,7 @@
     "dvr_performance.cpp",
     "dvr_pose.cpp",
     "dvr_surface.cpp",
-    "dvr_vsync.cpp",
+    "dvr_tracking.cpp",
 ]
 
 static_libs = [
@@ -66,7 +73,7 @@
 ]
 
 cc_library_shared {
-    name: "libdvr",
+    name: "libdvr.google",
     owner: "google",
     cflags: cflags,
     header_libs: ["libdvr_headers"],
@@ -81,7 +88,7 @@
 // restricting function access in the shared lib makes it inconvenient to use in
 // test code.
 cc_library_static {
-    name: "libdvr_static",
+    name: "libdvr_static.google",
     owner: "google",
     cflags: cflags,
     header_libs: ["libdvr_headers"],
diff --git a/libs/vr/libdvr/dvr_api.cpp b/libs/vr/libdvr/dvr_api.cpp
index d14f040..e099f6a 100644
--- a/libs/vr/libdvr/dvr_api.cpp
+++ b/libs/vr/libdvr/dvr_api.cpp
@@ -12,6 +12,7 @@
 #include <dvr/dvr_display_manager.h>
 #include <dvr/dvr_performance.h>
 #include <dvr/dvr_surface.h>
+#include <dvr/dvr_tracking.h>
 #include <dvr/dvr_vsync.h>
 
 // Headers not yet moved into libdvr.
diff --git a/libs/vr/libdvr/dvr_buffer_queue.cpp b/libs/vr/libdvr/dvr_buffer_queue.cpp
index 571558a..f4c6600 100644
--- a/libs/vr/libdvr/dvr_buffer_queue.cpp
+++ b/libs/vr/libdvr/dvr_buffer_queue.cpp
@@ -9,7 +9,7 @@
 
 using namespace android;
 using android::dvr::BufferConsumer;
-using android::dvr::BufferHubBuffer;
+using android::dvr::BufferHubBase;
 using android::dvr::BufferProducer;
 using android::dvr::ConsumerQueue;
 using android::dvr::ProducerQueue;
@@ -439,7 +439,7 @@
     consumer_queue_->SetBufferRemovedCallback(nullptr);
   } else {
     consumer_queue_->SetBufferRemovedCallback(
-        [callback, context](const std::shared_ptr<BufferHubBuffer>& buffer) {
+        [callback, context](const std::shared_ptr<BufferHubBase>& buffer) {
           // When buffer is removed from the queue, the slot is already invalid.
           auto read_buffer = std::make_unique<DvrReadBuffer>();
           read_buffer->read_buffer =
diff --git a/libs/vr/libdvr/dvr_internal.h b/libs/vr/libdvr/dvr_internal.h
index de8bb96..df8125a 100644
--- a/libs/vr/libdvr/dvr_internal.h
+++ b/libs/vr/libdvr/dvr_internal.h
@@ -16,8 +16,11 @@
 namespace android {
 namespace dvr {
 
-class BufferProducer;
-class BufferConsumer;
+// TODO(b/116855254): Remove this typedef once rename is complete in libdvr.
+// Note that the dvr::BufferProducer and dvr::BufferConsumer were poorly named,
+// they should really be named as ProducerBuffer and ConsumerBuffer.
+typedef class ProducerBuffer BufferProducer;
+typedef class ConsumerBuffer BufferConsumer;
 class IonBuffer;
 
 DvrBuffer* CreateDvrBufferFromIonBuffer(
diff --git a/libs/vr/libdvr/dvr_tracking.cpp b/libs/vr/libdvr/dvr_tracking.cpp
new file mode 100644
index 0000000..73addc9
--- /dev/null
+++ b/libs/vr/libdvr/dvr_tracking.cpp
@@ -0,0 +1,82 @@
+#include "include/dvr/dvr_tracking.h"
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+
+#if !DVR_TRACKING_IMPLEMENTED
+
+extern "C" {
+
+// This file provides the stub implementation of dvrTrackingXXX APIs. On
+// platforms that implement these APIs, set -DDVR_TRACKING_IMPLEMENTED=1 in the
+// build file.
+int dvrTrackingCameraCreate(DvrTrackingCamera**) {
+  ALOGE("dvrTrackingCameraCreate is not implemented.");
+  return -ENOSYS;
+}
+
+void dvrTrackingCameraDestroy(DvrTrackingCamera*) {
+  ALOGE("dvrTrackingCameraDestroy is not implemented.");
+}
+
+int dvrTrackingCameraStart(DvrTrackingCamera*, DvrWriteBufferQueue*) {
+  ALOGE("dvrTrackingCameraCreate is not implemented.");
+  return -ENOSYS;
+}
+
+int dvrTrackingCameraStop(DvrTrackingCamera*) {
+  ALOGE("dvrTrackingCameraCreate is not implemented.");
+  return -ENOSYS;
+}
+
+int dvrTrackingFeatureExtractorCreate(DvrTrackingFeatureExtractor**) {
+  ALOGE("dvrTrackingFeatureExtractorCreate is not implemented.");
+  return -ENOSYS;
+}
+
+void dvrTrackingFeatureExtractorDestroy(DvrTrackingFeatureExtractor*) {
+  ALOGE("dvrTrackingFeatureExtractorDestroy is not implemented.");
+}
+
+int dvrTrackingFeatureExtractorStart(DvrTrackingFeatureExtractor*,
+                                     DvrTrackingFeatureCallback, void*) {
+  ALOGE("dvrTrackingFeatureExtractorCreate is not implemented.");
+  return -ENOSYS;
+}
+
+int dvrTrackingFeatureExtractorStop(DvrTrackingFeatureExtractor*) {
+  ALOGE("dvrTrackingFeatureExtractorCreate is not implemented.");
+  return -ENOSYS;
+}
+
+int dvrTrackingFeatureExtractorProcessBuffer(DvrTrackingFeatureExtractor*,
+                                             DvrReadBuffer*,
+                                             const DvrTrackingBufferMetadata*,
+                                             bool*) {
+  ALOGE("dvrTrackingFeatureExtractorProcessBuffer is not implemented.");
+  return -ENOSYS;
+}
+
+int dvrTrackingSensorsCreate(DvrTrackingSensors**, const char*) {
+  ALOGE("dvrTrackingSensorsCreate is not implemented.");
+  return -ENOSYS;
+}
+
+void dvrTrackingSensorsDestroy(DvrTrackingSensors*) {
+  ALOGE("dvrTrackingSensorsDestroy is not implemented.");
+}
+
+int dvrTrackingSensorsStart(DvrTrackingSensors*, DvrTrackingSensorEventCallback,
+                            void*) {
+  ALOGE("dvrTrackingStart is not implemented.");
+  return -ENOSYS;
+}
+
+int dvrTrackingSensorsStop(DvrTrackingSensors*) {
+  ALOGE("dvrTrackingStop is not implemented.");
+  return -ENOSYS;
+}
+
+}  // extern "C"
+
+#endif  // DVR_TRACKING_IMPLEMENTED
diff --git a/libs/vr/libdvr/dvr_vsync.cpp b/libs/vr/libdvr/dvr_vsync.cpp
deleted file mode 100644
index 099240e..0000000
--- a/libs/vr/libdvr/dvr_vsync.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-#include "include/dvr/dvr_vsync.h"
-
-#include <utils/Log.h>
-
-#include <private/dvr/vsync_client.h>
-
-extern "C" {
-
-struct DvrVSyncClient {
-  std::unique_ptr<android::dvr::VSyncClient> client;
-};
-
-int dvrVSyncClientCreate(DvrVSyncClient** client_out) {
-  auto client = android::dvr::VSyncClient::Create();
-  if (!client) {
-    ALOGE("dvrVSyncClientCreate: Failed to create vsync client!");
-    return -EIO;
-  }
-
-  *client_out = new DvrVSyncClient{std::move(client)};
-  return 0;
-}
-
-void dvrVSyncClientDestroy(DvrVSyncClient* client) { delete client; }
-
-int dvrVSyncClientGetSchedInfo(DvrVSyncClient* client, int64_t* vsync_period_ns,
-                               int64_t* next_timestamp_ns,
-                               uint32_t* next_vsync_count) {
-  return client->client->GetSchedInfo(vsync_period_ns, next_timestamp_ns,
-                                      next_vsync_count);
-}
-
-}  // extern "C"
diff --git a/libs/vr/libdvr/include/dvr/dvr_api.h b/libs/vr/libdvr/include/dvr/dvr_api.h
index 80ffc82..fef8512 100644
--- a/libs/vr/libdvr/include/dvr/dvr_api.h
+++ b/libs/vr/libdvr/include/dvr/dvr_api.h
@@ -10,6 +10,7 @@
 #include <dvr/dvr_display_types.h>
 #include <dvr/dvr_hardware_composer_types.h>
 #include <dvr/dvr_pose.h>
+#include <dvr/dvr_tracking_types.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -50,6 +51,12 @@
 typedef struct DvrSurfaceAttributeValue DvrSurfaceAttributeValue;
 typedef struct DvrSurfaceAttribute DvrSurfaceAttribute;
 
+typedef struct DvrReadBuffer DvrReadBuffer;
+typedef struct DvrTrackingCamera DvrTrackingCamera;
+typedef struct DvrTrackingFeatureExtractor DvrTrackingFeatureExtractor;
+typedef struct DvrTrackingSensors DvrTrackingSensors;
+typedef struct DvrWriteBufferQueue DvrWriteBufferQueue;
+
 // Note: To avoid breaking others during active development, only modify this
 // struct by appending elements to the end.
 // If you do feel we should to re-arrange or remove elements, please make a
@@ -367,6 +374,38 @@
 typedef int (*DvrPerformanceSetSchedulerPolicyPtr)(
     pid_t task_id, const char* scheduler_policy);
 
+// dvr_tracking.h
+typedef int (*DvrTrackingCameraCreatePtr)(DvrTrackingCamera** out_camera);
+typedef void (*DvrTrackingCameraDestroyPtr)(DvrTrackingCamera* camera);
+typedef int (*DvrTrackingCameraStartPtr)(DvrTrackingCamera* camera,
+                                         DvrWriteBufferQueue* write_queue);
+typedef int (*DvrTrackingCameraStopPtr)(DvrTrackingCamera* camera);
+
+typedef int (*DvrTrackingFeatureExtractorCreatePtr)(
+    DvrTrackingFeatureExtractor** out_extractor);
+typedef void (*DvrTrackingFeatureExtractorDestroyPtr)(
+    DvrTrackingFeatureExtractor* extractor);
+typedef void (*DvrTrackingFeatureCallback)(void* context,
+                                           const DvrTrackingFeatures* event);
+typedef int (*DvrTrackingFeatureExtractorStartPtr)(
+    DvrTrackingFeatureExtractor* extractor,
+    DvrTrackingFeatureCallback callback, void* context);
+typedef int (*DvrTrackingFeatureExtractorStopPtr)(
+    DvrTrackingFeatureExtractor* extractor);
+typedef int (*DvrTrackingFeatureExtractorProcessBufferPtr)(
+    DvrTrackingFeatureExtractor* extractor, DvrReadBuffer* buffer,
+    const DvrTrackingBufferMetadata* metadata, bool* out_skipped);
+
+typedef void (*DvrTrackingSensorEventCallback)(void* context,
+                                               DvrTrackingSensorEvent* event);
+typedef int (*DvrTrackingSensorsCreatePtr)(DvrTrackingSensors** out_sensors,
+                                           const char* mode);
+typedef void (*DvrTrackingSensorsDestroyPtr)(DvrTrackingSensors* sensors);
+typedef int (*DvrTrackingSensorsStartPtr)(
+    DvrTrackingSensors* sensors, DvrTrackingSensorEventCallback callback,
+    void* context);
+typedef int (*DvrTrackingSensorsStopPtr)(DvrTrackingSensors* sensors);
+
 // The buffer metadata that an Android Surface (a.k.a. ANativeWindow)
 // will populate. A DvrWriteBufferQueue must be created with this metadata iff
 // ANativeWindow access is needed. Please do not remove, modify, or reorder
diff --git a/libs/vr/libdvr/include/dvr/dvr_api_entries.h b/libs/vr/libdvr/include/dvr/dvr_api_entries.h
index f0d8ec6..3006b61 100644
--- a/libs/vr/libdvr/include/dvr/dvr_api_entries.h
+++ b/libs/vr/libdvr/include/dvr/dvr_api_entries.h
@@ -85,9 +85,9 @@
 DVR_V1_API_ENTRY(ReadBufferQueueHandleEvents);
 
 // V-Sync client
-DVR_V1_API_ENTRY(VSyncClientCreate);
-DVR_V1_API_ENTRY(VSyncClientDestroy);
-DVR_V1_API_ENTRY(VSyncClientGetSchedInfo);
+DVR_V1_API_ENTRY_DEPRECATED(VSyncClientCreate);
+DVR_V1_API_ENTRY_DEPRECATED(VSyncClientDestroy);
+DVR_V1_API_ENTRY_DEPRECATED(VSyncClientGetSchedInfo);
 
 // Display surface
 DVR_V1_API_ENTRY(SurfaceCreate);
@@ -181,3 +181,20 @@
 DVR_V1_API_ENTRY(PoseClientGetDataReader);
 DVR_V1_API_ENTRY(PoseClientDataCapture);
 DVR_V1_API_ENTRY(PoseClientDataReaderDestroy);
+
+// Tracking
+DVR_V1_API_ENTRY(TrackingCameraCreate);
+DVR_V1_API_ENTRY(TrackingCameraDestroy);
+DVR_V1_API_ENTRY(TrackingCameraStart);
+DVR_V1_API_ENTRY(TrackingCameraStop);
+
+DVR_V1_API_ENTRY(TrackingFeatureExtractorCreate);
+DVR_V1_API_ENTRY(TrackingFeatureExtractorDestroy);
+DVR_V1_API_ENTRY(TrackingFeatureExtractorStart);
+DVR_V1_API_ENTRY(TrackingFeatureExtractorStop);
+DVR_V1_API_ENTRY(TrackingFeatureExtractorProcessBuffer);
+
+DVR_V1_API_ENTRY(TrackingSensorsCreate);
+DVR_V1_API_ENTRY(TrackingSensorsDestroy);
+DVR_V1_API_ENTRY(TrackingSensorsStart);
+DVR_V1_API_ENTRY(TrackingSensorsStop);
diff --git a/libs/vr/libdvr/include/dvr/dvr_deleter.h b/libs/vr/libdvr/include/dvr/dvr_deleter.h
index 943384f..fe59d1f 100644
--- a/libs/vr/libdvr/include/dvr/dvr_deleter.h
+++ b/libs/vr/libdvr/include/dvr/dvr_deleter.h
@@ -20,7 +20,6 @@
 typedef struct DvrSurface DvrSurface;
 typedef struct DvrHwcClient DvrHwcClient;
 typedef struct DvrHwcFrame DvrHwcFrame;
-typedef struct DvrVSyncClient DvrVSyncClient;
 
 void dvrBufferDestroy(DvrBuffer* buffer);
 void dvrReadBufferDestroy(DvrReadBuffer* read_buffer);
@@ -32,7 +31,6 @@
 void dvrSurfaceDestroy(DvrSurface* surface);
 void dvrHwcClientDestroy(DvrHwcClient* client);
 void dvrHwcFrameDestroy(DvrHwcFrame* frame);
-void dvrVSyncClientDestroy(DvrVSyncClient* client);
 
 __END_DECLS
 
@@ -55,7 +53,6 @@
   void operator()(DvrSurface* p) { dvrSurfaceDestroy(p); }
   void operator()(DvrHwcClient* p) { dvrHwcClientDestroy(p); }
   void operator()(DvrHwcFrame* p) { dvrHwcFrameDestroy(p); }
-  void operator()(DvrVSyncClient* p) { dvrVSyncClientDestroy(p); }
 };
 
 // Helper to define unique pointers for DVR object types.
@@ -73,7 +70,6 @@
 using UniqueDvrSurface = MakeUniqueDvrPointer<DvrSurface>;
 using UniqueDvrHwcClient = MakeUniqueDvrPointer<DvrHwcClient>;
 using UniqueDvrHwcFrame = MakeUniqueDvrPointer<DvrHwcFrame>;
-using UniqueDvrVSyncClient = MakeUniqueDvrPointer<DvrVSyncClient>;
 
 // TODO(eieio): Add an adapter for std::shared_ptr that injects the deleter into
 // the relevant constructors.
diff --git a/libs/vr/libdvr/include/dvr/dvr_tracking.h b/libs/vr/libdvr/include/dvr/dvr_tracking.h
new file mode 100644
index 0000000..5e388f3
--- /dev/null
+++ b/libs/vr/libdvr/include/dvr/dvr_tracking.h
@@ -0,0 +1,185 @@
+#ifndef ANDROID_DVR_TRACKING_H_
+#define ANDROID_DVR_TRACKING_H_
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+#include <dvr/dvr_tracking_types.h>
+
+__BEGIN_DECLS
+
+typedef struct DvrReadBuffer DvrReadBuffer;
+typedef struct DvrTrackingCamera DvrTrackingCamera;
+typedef struct DvrTrackingFeatureExtractor DvrTrackingFeatureExtractor;
+typedef struct DvrTrackingSensors DvrTrackingSensors;
+typedef struct DvrWriteBufferQueue DvrWriteBufferQueue;
+
+// The callback for DvrTrackingFeatureExtractor that will deliver the feature
+// events. This callback is passed to dvrTrackingFeatureExtractorStart.
+typedef void (*DvrTrackingFeatureCallback)(void* context,
+                                           const DvrTrackingFeatures* event);
+
+// The callback for DvrTrackingSensors session that will deliver the events.
+// This callback is passed to dvrTrackingSensorsStart.
+typedef void (*DvrTrackingSensorEventCallback)(void* context,
+                                               DvrTrackingSensorEvent* event);
+
+// Creates a DvrTrackingCamera session.
+//
+// On creation, the session is not in operating mode. Client code must call
+// dvrTrackingCameraStart to bootstrap the underlying camera stack.
+//
+// There is no plan to expose camera configuration through this API. All camera
+// parameters are determined by the system optimized for better tracking
+// results. See b/78662281 for detailed deprecation plan of this API and the
+// Stage 2 of VR tracking data source refactoring.
+//
+// @param out_camera The pointer of a DvrTrackingCamera will be filled here if
+//     the method call succeeds.
+// @return Zero on success, or negative error code.
+int dvrTrackingCameraCreate(DvrTrackingCamera** out_camera);
+
+// Destroys a DvrTrackingCamera handle.
+//
+// @param camera The DvrTrackingCamera of interest.
+void dvrTrackingCameraDestroy(DvrTrackingCamera* camera);
+
+// Starts the DvrTrackingCamera.
+//
+// On successful return, all DvrReadBufferQueue's associated with the given
+// write_queue will start to receive buffers from the camera stack. Note that
+// clients of this API should not assume the buffer dimension, format, and/or
+// usage of the outcoming buffers, as they are governed by the underlying camera
+// logic. Also note that it's the client's responsibility to consume buffers
+// from DvrReadBufferQueue on time and return them back to the producer;
+// otherwise the camera stack might be blocked.
+//
+// @param camera The DvrTrackingCamera of interest.
+// @param write_queue A DvrWriteBufferQueue that the camera stack can use to
+//     populate the buffer into. The queue must be empty and the camera stack
+//     will request buffer allocation with proper buffer dimension, format, and
+//     usage. Note that the write queue must be created with user_metadata_size
+//     set to sizeof(DvrTrackingBufferMetadata). On success, the write_queue
+//     handle will become invalid and the ownership of the queue handle will be
+//     transferred into the camera; otherwise, the write_queue handle will keep
+//     untouched and the caller still has the ownership.
+// @return Zero on success, or negative error code.
+int dvrTrackingCameraStart(DvrTrackingCamera* camera,
+                           DvrWriteBufferQueue* write_queue);
+
+// Stops the DvrTrackingCamera.
+//
+// On successful return, the DvrWriteBufferQueue set during
+// dvrTrackingCameraStart will stop getting new buffers from the camera stack.
+//
+// @param camera The DvrTrackingCamera of interest.
+// @return Zero on success, or negative error code.
+int dvrTrackingCameraStop(DvrTrackingCamera* camera);
+
+// Creates a DvrTrackingSensors session.
+//
+// This will initialize but not start device sensors (gyro / accel). Upon
+// successfull creation, the clients can call dvrTrackingSensorsStart to start
+// receiving sensor events.
+//
+// @param out_sensors The pointer of a DvrTrackingSensors will be filled here if
+//     the method call succeeds.
+// @param mode The sensor mode.
+//        mode="ndk": Use the Android NDK.
+//        mode="direct": Use direct mode sensors (lower latency).
+// @return Zero on success, or negative error code.
+int dvrTrackingSensorsCreate(DvrTrackingSensors** out_sensors,
+                             const char* mode);
+
+// Destroys a DvrTrackingSensors session.
+//
+// @param sensors The DvrTrackingSensors struct to destroy.
+void dvrTrackingSensorsDestroy(DvrTrackingSensors* sensors);
+
+// Starts the tracking sensor session.
+//
+// This will start the device sensors and start pumping the feature and sensor
+// events as they arrive.
+//
+// @param client A tracking client created by dvrTrackingSensorsCreate.
+// @param context A client supplied pointer that will be passed to the callback.
+// @param callback A callback that will receive the sensor events on an
+// arbitrary thread.
+// @return Zero on success, or negative error code.
+int dvrTrackingSensorsStart(DvrTrackingSensors* sensors,
+                            DvrTrackingSensorEventCallback callback,
+                            void* context);
+
+// Stops a DvrTrackingSensors session.
+//
+// This will stop the device sensors. dvrTrackingSensorsStart can be called to
+// restart them again.
+//
+// @param client A tracking client created by dvrTrackingClientCreate.
+// @return Zero on success, or negative error code.
+int dvrTrackingSensorsStop(DvrTrackingSensors* sensors);
+
+// Creates a tracking feature extractor.
+//
+// This will initialize but not start the feature extraction session. Upon
+// successful creation, the client can call dvrTrackingFeatureExtractorStart to
+// start receiving features.
+//
+// @param out_extractor The pointer of a DvrTrackingFeatureExtractor will be
+//     filled here if the method call succeeds.
+int dvrTrackingFeatureExtractorCreate(
+    DvrTrackingFeatureExtractor** out_extractor);
+
+// Destroys a tracking feature extractor.
+//
+// @param extractor The DvrTrackingFeatureExtractor to destroy.
+void dvrTrackingFeatureExtractorDestroy(DvrTrackingFeatureExtractor* extractor);
+
+// Starts the tracking feature extractor.
+//
+// This will start the extractor and start pumping the output feature events to
+// the registered callback. Note that this method will create one or more
+// threads to handle feature processing.
+//
+// @param extractor The DvrTrackingFeatureExtractor to destroy.
+int dvrTrackingFeatureExtractorStart(DvrTrackingFeatureExtractor* extractor,
+                                     DvrTrackingFeatureCallback callback,
+                                     void* context);
+
+// Stops the tracking feature extractor.
+//
+// This will stop the extractor session and clean up all internal resourcse
+// related to this extractor. On succssful return, all internal therad started
+// by dvrTrackingFeatureExtractorStart should be stopped.
+//
+// @param extractor The DvrTrackingFeatureExtractor to destroy.
+int dvrTrackingFeatureExtractorStop(DvrTrackingFeatureExtractor* extractor);
+
+// Processes one buffer to extract features from.
+//
+// The buffer will be sent over to DSP for feature extraction. Once the process
+// is done, the processing thread will invoke DvrTrackingFeatureCallback with
+// newly extracted features. Note that not all buffers will be processed, as the
+// underlying DSP can only process buffers at a certain framerate. If a buffer
+// needs to be skipped, out_skipped filed will be set to true. Also note that
+// for successfully processed stereo buffer, two callbacks (one for each eye)
+// will be fired.
+//
+// @param extractor The DvrTrackingFeatureExtractor to destroy.
+// @param buffer The buffer to extract features from. Note that the buffer must
+//     be in acquired state for the buffer to be processed. Also note that the
+//     buffer will be released back to its producer on successful return of the
+//     method.
+// @param metadata The metadata associated with the buffer. Should be populated
+//     by DvrTrackingCamera session as user defined metadata.
+// @param out_skipped On successful return, the field will be set to true iff
+//     the buffer was skipped; and false iff the buffer was processed. This
+//     field is optional and nullptr can be passed here to ignore the field.
+// @return Zero on success, or negative error code.
+int dvrTrackingFeatureExtractorProcessBuffer(
+    DvrTrackingFeatureExtractor* extractor, DvrReadBuffer* buffer,
+    const DvrTrackingBufferMetadata* metadata, bool* out_skipped);
+
+__END_DECLS
+
+#endif  // ANDROID_DVR_TRACKING_H_
diff --git a/libs/vr/libdvr/include/dvr/dvr_tracking_types.h b/libs/vr/libdvr/include/dvr/dvr_tracking_types.h
new file mode 100644
index 0000000..81310d2
--- /dev/null
+++ b/libs/vr/libdvr/include/dvr/dvr_tracking_types.h
@@ -0,0 +1,104 @@
+#ifndef ANDROID_DVR_TRACKING_TYPES_H_
+#define ANDROID_DVR_TRACKING_TYPES_H_
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+typedef struct DvrTrackingBufferMetadata {
+  // Specifies the source of this image.
+  uint32_t camera_mask;
+  // Specifies the memory format of this image.
+  uint32_t format;
+  /// The width of the image data.
+  uint32_t width;
+  /// The height of the image data.
+  uint32_t height;
+  /// The number of bytes per scanline of image data.
+  uint32_t stride;
+  /// The frame number of this image.
+  int32_t frame_number;
+  /// The timestamp of this image in nanoseconds. Taken in the middle of the
+  /// exposure interval.
+  int64_t timestamp_ns;
+  // This is the timestamp for recording when the system using the HAL
+  // received the callback.  It will not be populated by the HAL.
+  int64_t callback_timestamp_ns;
+  /// The exposure duration of this image in nanoseconds.
+  int64_t exposure_duration_ns;
+} DvrTrackingBufferMetadata;
+
+// Represents a set of features extracted from a camera frame. Note that this
+// should be in sync with TangoHalCallbacks defined in tango-hal.h.
+typedef struct DvrTrackingFeatures {
+  // Specifies the source of the features.
+  uint32_t camera_mask;
+
+  // This is unused.
+  uint32_t unused;
+
+  // The timestamp in nanoseconds from the image that generated the features.
+  // Taken in the middle of the exposure interval.
+  int64_t timestamp_ns;
+
+  // This is the timestamp for recording when the system using the HAL
+  // received the callback.  It will not be populated by the HAL.
+  int64_t callback_timestamp_ns;
+
+  // The frame number from the image that generated the features.
+  int64_t frame_number;
+
+  // The number of features.
+  int count;
+
+  // An array of 2D image points for each feature in the current image.
+  // This is sub-pixel refined extremum location at the fine resolution.
+  float (*positions)[2];
+
+  // The id of these measurements.
+  int32_t* ids;
+
+  // The feature descriptors.
+  uint64_t (*descriptors)[8];
+
+  // Laplacian scores for each feature.
+  float* scores;
+
+  // Is this feature a minimum or maximum in the Laplacian image.
+  // 0 if the feature is a maximum, 1 if it is a minimum.
+  int32_t* is_minimum;
+
+  // This corresponds to the sub-pixel index of the laplacian image
+  // that the extremum was found.
+  float* scales;
+
+  // Computed orientation of keypoint as part of FREAK extraction, except
+  // it's represented in radians and measured anti-clockwise.
+  float* angles;
+
+  // Edge scores for each feature.
+  float* edge_scores;
+} DvrTrackingFeatures;
+
+// Represents a sensor event.
+typedef struct DvrTrackingSensorEvent {
+  // The sensor type.
+  int32_t sensor;
+
+  // Event type.
+  int32_t type;
+
+  // This is the timestamp recorded from the device. Taken in the middle
+  // of the integration interval and adjusted for any low pass filtering.
+  int64_t timestamp_ns;
+
+  // The event data.
+  float x;
+  float y;
+  float z;
+} DvrTrackingSensorEvent;
+
+__END_DECLS
+
+#endif  // ANDROID_DVR_TRACKING_TYPES_H_
diff --git a/libs/vr/libdvr/include/dvr/dvr_vsync.h b/libs/vr/libdvr/include/dvr/dvr_vsync.h
index 87fdf31..498bb5c 100644
--- a/libs/vr/libdvr/include/dvr/dvr_vsync.h
+++ b/libs/vr/libdvr/include/dvr/dvr_vsync.h
@@ -6,8 +6,6 @@
 
 __BEGIN_DECLS
 
-typedef struct DvrVSyncClient DvrVSyncClient;
-
 // Represents a vsync sample. The size of this struct is 32 bytes.
 typedef struct __attribute__((packed, aligned(16))) DvrVsync {
   // The timestamp for the last vsync in nanoseconds.
@@ -29,19 +27,6 @@
   uint8_t padding[8];
 } DvrVsync;
 
-// Creates a new client to the system vsync service.
-int dvrVSyncClientCreate(DvrVSyncClient** client_out);
-
-// Destroys the vsync client.
-void dvrVSyncClientDestroy(DvrVSyncClient* client);
-
-// Get the estimated timestamp of the next GPU lens warp preemption event in/
-// ns. Also returns the corresponding vsync count that the next lens warp
-// operation will target.
-int dvrVSyncClientGetSchedInfo(DvrVSyncClient* client, int64_t* vsync_period_ns,
-                               int64_t* next_timestamp_ns,
-                               uint32_t* next_vsync_count);
-
 __END_DECLS
 
 #endif  // ANDROID_DVR_VSYNC_H_
diff --git a/libs/vr/libdvr/tests/Android.bp b/libs/vr/libdvr/tests/Android.bp
index 1ae75fb..3260447 100644
--- a/libs/vr/libdvr/tests/Android.bp
+++ b/libs/vr/libdvr/tests/Android.bp
@@ -12,38 +12,36 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-shared_libraries = [
-    "libbase",
-    "libbinder",
-    "libbufferhubqueue",
-    "libcutils",
-    "libgui",
-    "liblog",
-    "libhardware",
-    "libui",
-    "libutils",
-    "libnativewindow",
-    "libpdx_default_transport",
-]
-
-static_libraries = [
-    "libdvr_static",
-    "libchrome",
-    "libdvrcommon",
-    "libdisplay",
-    "libbroadcastring",
-]
-
 cc_test {
     srcs: [
         "dvr_display_manager-test.cpp",
         "dvr_named_buffer-test.cpp",
+        "dvr_tracking-test.cpp",
     ],
 
     header_libs: ["libdvr_headers"],
-    static_libs: static_libraries,
-    shared_libs: shared_libraries,
+    static_libs: [
+        "libdvr_static.google",
+        "libchrome",
+        "libdvrcommon",
+        "libdisplay",
+        "libbroadcastring",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libbufferhubqueue",
+        "libcutils",
+        "libgui",
+        "liblog",
+        "libhardware",
+        "libui",
+        "libutils",
+        "libnativewindow",
+        "libpdx_default_transport",
+    ],
     cflags: [
+        "-DDVR_TRACKING_IMPLEMENTED=0",
         "-DLOG_TAG=\"dvr_api-test\"",
         "-DTRACE=0",
         "-Wno-missing-field-initializers",
@@ -52,3 +50,55 @@
     ],
     name: "dvr_api-test",
 }
+
+cc_test {
+    name: "dvr_buffer_queue-test",
+
+    // Includes the dvr_api.h header. Tests should only include "dvr_api.h",
+    // and shall only get access to |dvrGetApi|, as other symbols are hidden
+    // from the library.
+    include_dirs: ["frameworks/native/libs/vr/libdvr/include"],
+
+    srcs: ["dvr_buffer_queue-test.cpp"],
+
+    shared_libs: [
+        "libandroid",
+        "liblog",
+    ],
+
+    cflags: [
+        "-DTRACE=0",
+        "-O2",
+        "-g",
+    ],
+
+    // DTS Should only link to NDK libraries.
+    sdk_version: "26",
+    stl: "c++_static",
+}
+
+cc_test {
+    name: "dvr_display-test",
+
+    include_dirs: [
+        "frameworks/native/libs/vr/libdvr/include",
+        "frameworks/native/libs/nativewindow/include",
+    ],
+
+    srcs: ["dvr_display-test.cpp"],
+
+    shared_libs: [
+        "libandroid",
+        "liblog",
+    ],
+
+    cflags: [
+        "-DTRACE=0",
+        "-O2",
+        "-g",
+    ],
+
+    // DTS Should only link to NDK libraries.
+    sdk_version: "26",
+    stl: "c++_static",
+}
diff --git a/libs/vr/libdvr/tests/Android.mk b/libs/vr/libdvr/tests/Android.mk
deleted file mode 100644
index 0f3840d..0000000
--- a/libs/vr/libdvr/tests/Android.mk
+++ /dev/null
@@ -1,73 +0,0 @@
-# Copyright (C) 2018 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-LOCAL_PATH:= $(call my-dir)
-
-# TODO(b/73133405): Currently, building cc_test against NDK using Android.bp
-# doesn't work well. Migrate to use Android.bp once b/73133405 gets fixed.
-
-include $(CLEAR_VARS)
-LOCAL_MODULE:= dvr_buffer_queue-test
-
-# Includes the dvr_api.h header. Tests should only include "dvr_api.h",
-# and shall only get access to |dvrGetApi|, as other symbols are hidden from the
-# library.
-LOCAL_C_INCLUDES := \
-    frameworks/native/libs/vr/libdvr/include \
-
-LOCAL_SANITIZE := thread
-
-LOCAL_SRC_FILES := dvr_buffer_queue-test.cpp
-
-LOCAL_SHARED_LIBRARIES := \
-    libandroid \
-    liblog \
-
-LOCAL_CFLAGS := \
-    -DTRACE=0 \
-    -O2 \
-    -g \
-
-# DTS Should only link to NDK libraries.
-LOCAL_SDK_VERSION := 26
-LOCAL_NDK_STL_VARIANT := c++_static
-
-include $(BUILD_NATIVE_TEST)
-
-
-include $(CLEAR_VARS)
-LOCAL_MODULE:= dvr_display-test
-
-LOCAL_C_INCLUDES := \
-    frameworks/native/libs/vr/libdvr/include \
-    frameworks/native/libs/nativewindow/include
-
-LOCAL_SANITIZE := thread
-
-LOCAL_SRC_FILES := dvr_display-test.cpp
-
-LOCAL_SHARED_LIBRARIES := \
-    libandroid \
-    liblog
-
-LOCAL_CFLAGS := \
-    -DTRACE=0 \
-    -O2 \
-    -g
-
-# DTS Should only link to NDK libraries.
-LOCAL_SDK_VERSION := 26
-LOCAL_NDK_STL_VARIANT := c++_static
-
-include $(BUILD_NATIVE_TEST)
\ No newline at end of file
diff --git a/libs/vr/libdvr/tests/dvr_api_test.h b/libs/vr/libdvr/tests/dvr_api_test.h
index d8359e7..5d2ec28 100644
--- a/libs/vr/libdvr/tests/dvr_api_test.h
+++ b/libs/vr/libdvr/tests/dvr_api_test.h
@@ -14,7 +14,7 @@
     // workaround for an Android NDK bug. See more detail:
     // https://github.com/android-ndk/ndk/issues/360
     flags |= RTLD_NODELETE;
-    platform_handle_ = dlopen("libdvr.so", flags);
+    platform_handle_ = dlopen("libdvr.google.so", flags);
     ASSERT_NE(nullptr, platform_handle_) << "Dvr shared library missing.";
 
     auto dvr_get_api = reinterpret_cast<decltype(&dvrGetApi)>(
diff --git a/libs/vr/libdvr/tests/dvr_tracking-test.cpp b/libs/vr/libdvr/tests/dvr_tracking-test.cpp
new file mode 100644
index 0000000..3b6d6e1
--- /dev/null
+++ b/libs/vr/libdvr/tests/dvr_tracking-test.cpp
@@ -0,0 +1,103 @@
+#include <android/log.h>
+#include <gtest/gtest.h>
+
+#include "dvr_api_test.h"
+
+namespace {
+
+class DvrTrackingTest : public DvrApiTest {};
+
+#if DVR_TRACKING_IMPLEMENTED
+
+TEST_F(DvrTrackingTest, Implemented) {
+  ASSERT_TRUE(api_.TrackingCameraCreate != nullptr);
+  ASSERT_TRUE(api_.TrackingCameraStart != nullptr);
+  ASSERT_TRUE(api_.TrackingCameraStop != nullptr);
+
+  ASSERT_TRUE(api_.TrackingFeatureExtractorCreate != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorDestroy != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorStart != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorStop != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorProcessBuffer != nullptr);
+}
+
+TEST_F(DvrTrackingTest, CameraCreateFailsForInvalidInput) {
+  int ret;
+  ret = api_.TrackingCameraCreate(nullptr);
+  EXPECT_EQ(ret, -EINVAL);
+
+  DvrTrackingCamera* camera = reinterpret_cast<DvrTrackingCamera*>(42);
+  ret = api_.TrackingCameraCreate(&camera);
+  EXPECT_EQ(ret, -EINVAL);
+}
+
+TEST_F(DvrTrackingTest, CameraCreateDestroy) {
+  DvrTrackingCamera* camera = nullptr;
+  int ret = api_.TrackingCameraCreate(&camera);
+
+  EXPECT_EQ(ret, 0);
+  ASSERT_TRUE(camera != nullptr);
+
+  api_.TrackingCameraDestroy(camera);
+}
+
+TEST_F(DvrTrackingTest, FeatureExtractorCreateFailsForInvalidInput) {
+  int ret;
+  ret = api_.TrackingFeatureExtractorCreate(nullptr);
+  EXPECT_EQ(ret, -EINVAL);
+
+  DvrTrackingFeatureExtractor* camera =
+      reinterpret_cast<DvrTrackingFeatureExtractor*>(42);
+  ret = api_.TrackingFeatureExtractorCreate(&camera);
+  EXPECT_EQ(ret, -EINVAL);
+}
+
+TEST_F(DvrTrackingTest, FeatureExtractorCreateDestroy) {
+  DvrTrackingFeatureExtractor* camera = nullptr;
+  int ret = api_.TrackingFeatureExtractorCreate(&camera);
+
+  EXPECT_EQ(ret, 0);
+  ASSERT_TRUE(camera != nullptr);
+
+  api_.TrackingFeatureExtractorDestroy(camera);
+}
+
+#else  // !DVR_TRACKING_IMPLEMENTED
+
+TEST_F(DvrTrackingTest, NotImplemented) {
+  ASSERT_TRUE(api_.TrackingCameraCreate != nullptr);
+  ASSERT_TRUE(api_.TrackingCameraDestroy != nullptr);
+  ASSERT_TRUE(api_.TrackingCameraStart != nullptr);
+  ASSERT_TRUE(api_.TrackingCameraStop != nullptr);
+
+  EXPECT_EQ(api_.TrackingCameraCreate(nullptr), -ENOSYS);
+  EXPECT_EQ(api_.TrackingCameraStart(nullptr, nullptr), -ENOSYS);
+  EXPECT_EQ(api_.TrackingCameraStop(nullptr), -ENOSYS);
+
+  ASSERT_TRUE(api_.TrackingFeatureExtractorCreate != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorDestroy != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorStart != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorStop != nullptr);
+  ASSERT_TRUE(api_.TrackingFeatureExtractorProcessBuffer != nullptr);
+
+  EXPECT_EQ(api_.TrackingFeatureExtractorCreate(nullptr), -ENOSYS);
+  EXPECT_EQ(api_.TrackingFeatureExtractorStart(nullptr, nullptr, nullptr),
+            -ENOSYS);
+  EXPECT_EQ(api_.TrackingFeatureExtractorStop(nullptr), -ENOSYS);
+  EXPECT_EQ(api_.TrackingFeatureExtractorProcessBuffer(nullptr, nullptr,
+                                                       nullptr, nullptr),
+            -ENOSYS);
+
+  ASSERT_TRUE(api_.TrackingSensorsCreate != nullptr);
+  ASSERT_TRUE(api_.TrackingSensorsDestroy != nullptr);
+  ASSERT_TRUE(api_.TrackingSensorsStart != nullptr);
+  ASSERT_TRUE(api_.TrackingSensorsStop != nullptr);
+
+  EXPECT_EQ(api_.TrackingSensorsCreate(nullptr, nullptr), -ENOSYS);
+  EXPECT_EQ(api_.TrackingSensorsStart(nullptr, nullptr, nullptr), -ENOSYS);
+  EXPECT_EQ(api_.TrackingSensorsStop(nullptr), -ENOSYS);
+}
+
+#endif  // DVR_TRACKING_IMPLEMENTED
+
+}  // namespace
diff --git a/libs/vr/libpdx/private/pdx/service.h b/libs/vr/libpdx/private/pdx/service.h
index 234b24a..d38b174 100644
--- a/libs/vr/libpdx/private/pdx/service.h
+++ b/libs/vr/libpdx/private/pdx/service.h
@@ -59,9 +59,18 @@
   virtual ~Channel() {}
 
   /*
+   * Accessors to the pid of the last active client.
+   */
+  pid_t GetActiveProcessId() const { return client_pid_; }
+  void SetActiveProcessId(pid_t pid) { client_pid_ = pid; }
+
+  /*
    * Utility to get a shared_ptr reference from the channel context pointer.
    */
   static std::shared_ptr<Channel> GetFromMessageInfo(const MessageInfo& info);
+
+ private:
+  pid_t client_pid_ = 0;
 };
 
 /*
diff --git a/libs/vr/libpdx_uds/service_endpoint.cpp b/libs/vr/libpdx_uds/service_endpoint.cpp
index 32d40e8..ecbfdba 100644
--- a/libs/vr/libpdx_uds/service_endpoint.cpp
+++ b/libs/vr/libpdx_uds/service_endpoint.cpp
@@ -521,6 +521,9 @@
   info.flags = 0;
   info.service = service_;
   info.channel = GetChannelState(channel_id);
+  if (info.channel != nullptr) {
+    info.channel->SetActiveProcessId(request.cred.pid);
+  }
   info.send_len = request.send_len;
   info.recv_len = request.max_recv_len;
   info.fd_count = request.file_descriptors.size();
diff --git a/libs/vr/libvrflinger/Android.bp b/libs/vr/libvrflinger/Android.bp
index 4dc669b..07904fb 100644
--- a/libs/vr/libvrflinger/Android.bp
+++ b/libs/vr/libvrflinger/Android.bp
@@ -20,7 +20,6 @@
     "display_surface.cpp",
     "hardware_composer.cpp",
     "vr_flinger.cpp",
-    "vsync_service.cpp",
 ]
 
 includeFiles = [ "include" ]
@@ -40,6 +39,7 @@
     "android.hardware.graphics.allocator@2.0",
     "android.hardware.graphics.composer@2.1",
     "android.hardware.graphics.composer@2.2",
+    "android.hardware.graphics.composer@2.3",
     "libbinder",
     "libbase",
     "libbufferhubqueue",
@@ -64,6 +64,7 @@
 headerLibraries = [
     "android.hardware.graphics.composer@2.1-command-buffer",
     "android.hardware.graphics.composer@2.2-command-buffer",
+    "android.hardware.graphics.composer@2.3-command-buffer",
     "libdvr_headers",
     "libsurfaceflinger_headers",
 ]
@@ -92,3 +93,7 @@
     header_libs: headerLibraries,
     name: "libvrflinger",
 }
+
+subdirs = [
+    "tests",
+]
diff --git a/libs/vr/libvrflinger/display_service.h b/libs/vr/libvrflinger/display_service.h
index 3090bd1..6fad58e 100644
--- a/libs/vr/libvrflinger/display_service.h
+++ b/libs/vr/libvrflinger/display_service.h
@@ -60,11 +60,6 @@
   void SetDisplayConfigurationUpdateNotifier(
       DisplayConfigurationUpdateNotifier notifier);
 
-  using VSyncCallback = HardwareComposer::VSyncCallback;
-  void SetVSyncCallback(VSyncCallback callback) {
-    hardware_composer_.SetVSyncCallback(callback);
-  }
-
   void GrantDisplayOwnership() { hardware_composer_.Enable(); }
   void SeizeDisplayOwnership() { hardware_composer_.Disable(); }
   void OnBootFinished() { hardware_composer_.OnBootFinished(); }
diff --git a/libs/vr/libvrflinger/hardware_composer.cpp b/libs/vr/libvrflinger/hardware_composer.cpp
index b8d5e2b..5f6455c 100644
--- a/libs/vr/libvrflinger/hardware_composer.cpp
+++ b/libs/vr/libvrflinger/hardware_composer.cpp
@@ -1,5 +1,6 @@
 #include "hardware_composer.h"
 
+#include <binder/IServiceManager.h>
 #include <cutils/properties.h>
 #include <cutils/sched_policy.h>
 #include <fcntl.h>
@@ -52,6 +53,10 @@
 
 const char kUseExternalDisplayProperty[] = "persist.vr.use_external_display";
 
+// Surface flinger uses "VSYNC-sf" and "VSYNC-app" for its version of these
+// events. Name ours similarly.
+const char kVsyncTraceEventName[] = "VSYNC-vrflinger";
+
 // How long to wait after boot finishes before we turn the display off.
 constexpr int kBootFinishedDisplayOffTimeoutSec = 10;
 
@@ -131,6 +136,7 @@
   UpdatePostThreadState(PostThreadState::Quit, true);
   if (post_thread_.joinable())
     post_thread_.join();
+  composer_callback_->SetVsyncService(nullptr);
 }
 
 bool HardwareComposer::Initialize(
@@ -147,6 +153,13 @@
 
   primary_display_ = GetDisplayParams(composer, primary_display_id, true);
 
+  vsync_service_ = new VsyncService;
+  sp<IServiceManager> sm(defaultServiceManager());
+  auto result = sm->addService(String16(VsyncService::GetServiceName()),
+      vsync_service_, false);
+  LOG_ALWAYS_FATAL_IF(result != android::OK,
+      "addService(%s) failed", VsyncService::GetServiceName());
+
   post_thread_event_fd_.Reset(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK));
   LOG_ALWAYS_FATAL_IF(
       !post_thread_event_fd_,
@@ -223,6 +236,7 @@
   LOG_ALWAYS_FATAL_IF(!composer_callback_->GotFirstHotplug(),
       "Registered composer callback but didn't get hotplug for primary"
       " display");
+  composer_callback_->SetVsyncService(vsync_service_);
 }
 
 void HardwareComposer::OnPostThreadResumed() {
@@ -242,7 +256,10 @@
   // Standalones only create the composer client once and then use SetPowerMode
   // to control the screen on pause/resume.
   if (!is_standalone_device_) {
-    composer_callback_ = nullptr;
+    if (composer_callback_ != nullptr) {
+      composer_callback_->SetVsyncService(nullptr);
+      composer_callback_ = nullptr;
+    }
     composer_.reset(nullptr);
   } else {
     EnableDisplay(*target_display_, false);
@@ -336,7 +353,6 @@
   // According to the documentation, this fence is signaled at the time of
   // vsync/DMA for physical displays.
   if (error == HWC::Error::None) {
-    ATRACE_INT("HardwareComposer: VsyncFence", present_fence);
     retire_fence_fds_.emplace_back(present_fence);
   } else {
     ATRACE_INT("HardwareComposer: PresentResult", error);
@@ -775,6 +791,11 @@
       std::unique_lock<std::mutex> lock(post_thread_mutex_);
       ALOGI("HardwareComposer::PostThread: Entering quiescent state.");
 
+      if (was_running) {
+        vsync_trace_parity_ = false;
+        ATRACE_INT(kVsyncTraceEventName, 0);
+      }
+
       // Tear down resources.
       OnPostThreadPaused();
       was_running = false;
@@ -848,6 +869,9 @@
       vsync_timestamp = status.get();
     }
 
+    vsync_trace_parity_ = !vsync_trace_parity_;
+    ATRACE_INT(kVsyncTraceEventName, vsync_trace_parity_ ? 1 : 0);
+
     // Advance the vsync counter only if the system is keeping up with hardware
     // vsync to give clients an indication of the delays.
     if (vsync_prediction_interval_ == 1)
@@ -867,11 +891,6 @@
       vsync_ring_->Publish(vsync);
     }
 
-    // Signal all of the vsync clients. Because absolute time is used for the
-    // wakeup time below, this can take a little time if necessary.
-    if (vsync_callback_)
-      vsync_callback_(vsync_timestamp, /*frame_time_estimate*/ 0, vsync_count_);
-
     {
       // Sleep until shortly before vsync.
       ATRACE_NAME("sleep");
@@ -1063,8 +1082,45 @@
            layers_.size());
 }
 
-void HardwareComposer::SetVSyncCallback(VSyncCallback callback) {
-  vsync_callback_ = callback;
+std::vector<sp<IVsyncCallback>>::const_iterator
+HardwareComposer::VsyncService::FindCallback(
+    const sp<IVsyncCallback>& callback) const {
+  sp<IBinder> binder = IInterface::asBinder(callback);
+  return std::find_if(callbacks_.cbegin(), callbacks_.cend(),
+                      [&](const sp<IVsyncCallback>& callback) {
+                        return IInterface::asBinder(callback) == binder;
+                      });
+}
+
+status_t HardwareComposer::VsyncService::registerCallback(
+    const sp<IVsyncCallback> callback) {
+  std::lock_guard<std::mutex> autolock(mutex_);
+  if (FindCallback(callback) == callbacks_.cend()) {
+    callbacks_.push_back(callback);
+  }
+  return NO_ERROR;
+}
+
+status_t HardwareComposer::VsyncService::unregisterCallback(
+    const sp<IVsyncCallback> callback) {
+  std::lock_guard<std::mutex> autolock(mutex_);
+  auto iter = FindCallback(callback);
+  if (iter != callbacks_.cend()) {
+    callbacks_.erase(iter);
+  }
+  return NO_ERROR;
+}
+
+void HardwareComposer::VsyncService::OnVsync(int64_t vsync_timestamp) {
+  ATRACE_NAME("VsyncService::OnVsync");
+  std::lock_guard<std::mutex> autolock(mutex_);
+  for (auto iter = callbacks_.begin(); iter != callbacks_.end();) {
+    if ((*iter)->onVsync(vsync_timestamp) == android::DEAD_OBJECT) {
+      iter = callbacks_.erase(iter);
+    } else {
+      ++iter;
+    }
+  }
 }
 
 Return<void> HardwareComposer::ComposerCallback::onHotplug(
@@ -1123,16 +1179,26 @@
 
 Return<void> HardwareComposer::ComposerCallback::onVsync(Hwc2::Display display,
                                                          int64_t timestamp) {
+  TRACE_FORMAT("vsync_callback|display=%" PRIu64 ";timestamp=%" PRId64 "|",
+               display, timestamp);
+  std::lock_guard<std::mutex> lock(mutex_);
   DisplayInfo* display_info = GetDisplayInfo(display);
   if (display_info) {
-    TRACE_FORMAT("vsync_callback|display=%" PRIu64 ";timestamp=%" PRId64 "|",
-                 display, timestamp);
     display_info->callback_vsync_timestamp = timestamp;
   }
+  if (primary_display_.id == display && vsync_service_ != nullptr) {
+    vsync_service_->OnVsync(timestamp);
+  }
 
   return Void();
 }
 
+void HardwareComposer::ComposerCallback::SetVsyncService(
+    const sp<VsyncService>& vsync_service) {
+  std::lock_guard<std::mutex> lock(mutex_);
+  vsync_service_ = vsync_service;
+}
+
 HardwareComposer::ComposerCallback::Displays
 HardwareComposer::ComposerCallback::GetDisplays() {
   std::lock_guard<std::mutex> lock(mutex_);
@@ -1149,6 +1215,7 @@
 
 Status<int64_t> HardwareComposer::ComposerCallback::GetVsyncTime(
     hwc2_display_t display) {
+  std::lock_guard<std::mutex> autolock(mutex_);
   DisplayInfo* display_info = GetDisplayInfo(display);
   if (!display_info) {
     ALOGW("Attempt to get vsync time for unknown display %" PRIu64, display);
@@ -1160,7 +1227,6 @@
   if (!event_fd) {
     // Fall back to returning the last timestamp returned by the vsync
     // callback.
-    std::lock_guard<std::mutex> autolock(mutex_);
     return display_info->callback_vsync_timestamp;
   }
 
diff --git a/libs/vr/libvrflinger/hardware_composer.h b/libs/vr/libvrflinger/hardware_composer.h
index 539a7fb..94a2337 100644
--- a/libs/vr/libvrflinger/hardware_composer.h
+++ b/libs/vr/libvrflinger/hardware_composer.h
@@ -24,6 +24,7 @@
 #include <pdx/rpc/variant.h>
 #include <private/dvr/buffer_hub_client.h>
 #include <private/dvr/shared_buffer_helpers.h>
+#include <private/dvr/vsync_service.h>
 
 #include "acquired_buffer.h"
 #include "display_surface.h"
@@ -300,8 +301,6 @@
 // will access the state and whether it needs to be synchronized.
 class HardwareComposer {
  public:
-  // Type for vsync callback.
-  using VSyncCallback = std::function<void(int64_t, int64_t, uint32_t)>;
   using RequestDisplayCallback = std::function<void(bool)>;
 
   HardwareComposer();
@@ -325,8 +324,6 @@
 
   std::string Dump();
 
-  void SetVSyncCallback(VSyncCallback callback);
-
   const DisplayParams& GetPrimaryDisplayParams() const {
     return primary_display_;
   }
@@ -350,6 +347,18 @@
   // on/off. Returns true on success, false on failure.
   bool EnableDisplay(const DisplayParams& display, bool enabled);
 
+  class VsyncService : public BnVsyncService {
+   public:
+    status_t registerCallback(const sp<IVsyncCallback> callback) override;
+    status_t unregisterCallback(const sp<IVsyncCallback> callback) override;
+    void OnVsync(int64_t vsync_timestamp);
+   private:
+    std::vector<sp<IVsyncCallback>>::const_iterator FindCallback(
+        const sp<IVsyncCallback>& callback) const;
+    std::mutex mutex_;
+    std::vector<sp<IVsyncCallback>> callbacks_;
+  };
+
   class ComposerCallback : public Hwc2::IComposerCallback {
    public:
     ComposerCallback() = default;
@@ -360,6 +369,7 @@
                                    int64_t timestamp) override;
 
     bool GotFirstHotplug() { return got_first_hotplug_; }
+    void SetVsyncService(const sp<VsyncService>& vsync_service);
 
     struct Displays {
       hwc2_display_t primary_display = 0;
@@ -385,6 +395,7 @@
     DisplayInfo primary_display_;
     std::optional<DisplayInfo> external_display_;
     bool external_display_was_hotplugged_ = false;
+    sp<VsyncService> vsync_service_;
   };
 
   HWC::Error Validate(hwc2_display_t display);
@@ -484,9 +495,6 @@
   // vector must be sorted by surface_id in ascending order.
   std::vector<Layer> layers_;
 
-  // Handler to hook vsync events outside of this class.
-  VSyncCallback vsync_callback_;
-
   // The layer posting thread. This thread wakes up a short time before vsync to
   // hand buffers to hardware composer.
   std::thread post_thread_;
@@ -534,6 +542,9 @@
   DvrConfig post_thread_config_;
   std::mutex shared_config_mutex_;
 
+  bool vsync_trace_parity_ = false;
+  sp<VsyncService> vsync_service_;
+
   static constexpr int kPostThreadInterrupted = 1;
 
   HardwareComposer(const HardwareComposer&) = delete;
diff --git a/libs/vr/libvrflinger/tests/Android.bp b/libs/vr/libvrflinger/tests/Android.bp
new file mode 100644
index 0000000..d500278
--- /dev/null
+++ b/libs/vr/libvrflinger/tests/Android.bp
@@ -0,0 +1,37 @@
+shared_libs = [
+    "android.hardware.configstore-utils",
+    "android.hardware.configstore@1.0",
+    "libbinder",
+    "libbufferhubqueue",
+    "libcutils",
+    "libgui",
+    "libhidlbase",
+    "liblog",
+    "libui",
+    "libutils",
+    "libnativewindow",
+    "libpdx_default_transport",
+]
+
+static_libs = [
+    "libdisplay",
+]
+
+cc_test {
+    srcs: ["vrflinger_test.cpp"],
+    // See go/apct-presubmit for documentation on how this .filter file is used
+    // by Android's automated testing infrastructure for test filtering.
+    data: ["vrflinger_test.filter"],
+    static_libs: static_libs,
+    shared_libs: shared_libs,
+    cflags: [
+        "-DLOG_TAG=\"VrFlingerTest\"",
+        "-DTRACE=0",
+        "-O0",
+        "-g",
+        "-Wall",
+        "-Werror",
+    ],
+    cppflags: ["-std=c++1z"],
+    name: "vrflinger_test",
+}
diff --git a/libs/vr/libvrflinger/tests/vrflinger_test.cpp b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
new file mode 100644
index 0000000..e1c7adb
--- /dev/null
+++ b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
@@ -0,0 +1,264 @@
+#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
+#include <android/hardware/configstore/1.1/types.h>
+#include <android/hardware_buffer.h>
+#include <binder/IServiceManager.h>
+#include <binder/Parcel.h>
+#include <binder/ProcessState.h>
+#include <configstore/Utils.h>
+#include <cutils/properties.h>
+#include <gtest/gtest.h>
+#include <gui/ISurfaceComposer.h>
+#include <log/log.h>
+#include <utils/StrongPointer.h>
+
+#include <chrono>
+#include <memory>
+#include <mutex>
+#include <optional>
+#include <thread>
+
+#include <private/dvr/display_client.h>
+
+using namespace android::hardware::configstore;
+using namespace android::hardware::configstore::V1_0;
+using android::dvr::display::DisplayClient;
+using android::dvr::display::Surface;
+using android::dvr::display::SurfaceAttribute;
+using android::dvr::display::SurfaceAttributeValue;
+
+namespace android {
+namespace dvr {
+
+// The transaction code for asking surface flinger if vr flinger is active. This
+// is done as a hidden api since it's only used for tests. See the "case 1028"
+// block in SurfaceFlinger::onTransact() in SurfaceFlinger.cpp.
+constexpr uint32_t kIsVrFlingerActiveTransactionCode = 1028;
+
+// The maximum amount of time to give vr flinger to activate/deactivate. If the
+// switch hasn't completed in this amount of time, the test will fail.
+constexpr auto kVrFlingerSwitchMaxTime = std::chrono::seconds(1);
+
+// How long to wait between each check to see if the vr flinger switch
+// completed.
+constexpr auto kVrFlingerSwitchPollInterval = std::chrono::milliseconds(50);
+
+// How long to wait for a device that boots to VR to have vr flinger ready.
+constexpr auto kBootVrFlingerWaitTimeout = std::chrono::seconds(30);
+
+// A Binder connection to surface flinger.
+class SurfaceFlingerConnection {
+ public:
+  static std::unique_ptr<SurfaceFlingerConnection> Create() {
+    sp<ISurfaceComposer> surface_flinger = interface_cast<ISurfaceComposer>(
+        defaultServiceManager()->getService(String16("SurfaceFlinger")));
+    if (surface_flinger == nullptr) {
+      return nullptr;
+    }
+
+    return std::unique_ptr<SurfaceFlingerConnection>(
+        new SurfaceFlingerConnection(surface_flinger));
+  }
+
+  // Returns true if the surface flinger process is still running. We use this
+  // to detect if surface flinger has crashed.
+  bool IsAlive() {
+    IInterface::asBinder(surface_flinger_)->pingBinder();
+    return IInterface::asBinder(surface_flinger_)->isBinderAlive();
+  }
+
+  // Return true if vr flinger is currently active, false otherwise. If there's
+  // an error communicating with surface flinger, std::nullopt is returned.
+  std::optional<bool> IsVrFlingerActive() {
+    Parcel data, reply;
+    status_t result =
+        data.writeInterfaceToken(surface_flinger_->getInterfaceDescriptor());
+    if (result != NO_ERROR) {
+      return std::nullopt;
+    }
+    result = IInterface::asBinder(surface_flinger_)
+                 ->transact(kIsVrFlingerActiveTransactionCode, data, &reply);
+    if (result != NO_ERROR) {
+      return std::nullopt;
+    }
+    bool vr_flinger_active;
+    result = reply.readBool(&vr_flinger_active);
+    if (result != NO_ERROR) {
+      return std::nullopt;
+    }
+    return vr_flinger_active;
+  }
+
+  enum class VrFlingerSwitchResult : int8_t {
+    kSuccess,
+    kTimedOut,
+    kCommunicationError,
+    kSurfaceFlingerDied
+  };
+
+  // Wait for vr flinger to become active or inactive.
+  VrFlingerSwitchResult WaitForVrFlinger(bool wait_active) {
+    return WaitForVrFlingerTimed(wait_active, kVrFlingerSwitchPollInterval,
+        kVrFlingerSwitchMaxTime);
+  }
+
+  // Wait for vr flinger to become active or inactive, specifying custom timeouts.
+  VrFlingerSwitchResult WaitForVrFlingerTimed(bool wait_active,
+      std::chrono::milliseconds pollInterval, std::chrono::seconds timeout) {
+    auto start_time = std::chrono::steady_clock::now();
+    while (1) {
+      std::this_thread::sleep_for(pollInterval);
+      if (!IsAlive()) {
+        return VrFlingerSwitchResult::kSurfaceFlingerDied;
+      }
+      std::optional<bool> vr_flinger_active = IsVrFlingerActive();
+      if (!vr_flinger_active.has_value()) {
+        return VrFlingerSwitchResult::kCommunicationError;
+      }
+      if (vr_flinger_active.value() == wait_active) {
+        return VrFlingerSwitchResult::kSuccess;
+      } else if (std::chrono::steady_clock::now() - start_time > timeout) {
+        return VrFlingerSwitchResult::kTimedOut;
+      }
+    }
+  }
+
+ private:
+  SurfaceFlingerConnection(sp<ISurfaceComposer> surface_flinger)
+      : surface_flinger_(surface_flinger) {}
+
+  sp<ISurfaceComposer> surface_flinger_ = nullptr;
+};
+
+// This test activates vr flinger by creating a vr flinger surface, then
+// deactivates vr flinger by destroying the surface. We verify that vr flinger
+// is activated and deactivated as expected, and that surface flinger doesn't
+// crash.
+//
+// If the device doesn't support vr flinger (as repoted by ConfigStore), the
+// test does nothing.
+//
+// If the device is a standalone vr device, the test also does nothing, since
+// this test verifies the behavior of display handoff from surface flinger to vr
+// flinger and back, and standalone devices never hand control of the display
+// back to surface flinger.
+TEST(VrFlingerTest, ActivateDeactivate) {
+  android::ProcessState::self()->startThreadPool();
+
+  // Exit immediately if the device doesn't support vr flinger. This ConfigStore
+  // check is the same mechanism used by surface flinger to decide if it should
+  // initialize vr flinger.
+  bool vr_flinger_enabled =
+      getBool<ISurfaceFlingerConfigs, &ISurfaceFlingerConfigs::useVrFlinger>(
+          false);
+  if (!vr_flinger_enabled) {
+    return;
+  }
+
+  // This test doesn't apply to standalone vr devices.
+  if (property_get_bool("ro.boot.vr", false)) {
+    return;
+  }
+
+  auto surface_flinger_connection = SurfaceFlingerConnection::Create();
+  ASSERT_NE(surface_flinger_connection, nullptr);
+
+  // Verify we start off with vr flinger disabled.
+  ASSERT_TRUE(surface_flinger_connection->IsAlive());
+  auto vr_flinger_active = surface_flinger_connection->IsVrFlingerActive();
+  ASSERT_TRUE(vr_flinger_active.has_value());
+  ASSERT_FALSE(vr_flinger_active.value());
+
+  // Create a vr flinger surface, and verify vr flinger becomes active.
+  // Introduce a scope so that, at the end of the scope, the vr flinger surface
+  // is destroyed, and vr flinger deactivates.
+  {
+    auto display_client = DisplayClient::Create();
+    ASSERT_NE(display_client, nullptr);
+    auto metrics = display_client->GetDisplayMetrics();
+    ASSERT_TRUE(metrics.ok());
+
+    auto surface = Surface::CreateSurface({
+        {SurfaceAttribute::Direct, SurfaceAttributeValue(true)},
+        {SurfaceAttribute::Visible, SurfaceAttributeValue(true)},
+    });
+    ASSERT_TRUE(surface.ok());
+    ASSERT_TRUE(surface.get() != nullptr);
+
+    auto queue = surface.get()->CreateQueue(
+        metrics.get().display_width, metrics.get().display_height,
+        /*layer_count=*/1, AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM,
+        AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE |
+            AHARDWAREBUFFER_USAGE_GPU_COLOR_OUTPUT |
+            AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN,
+        /*capacity=*/1,
+        /*metadata_size=*/0);
+    ASSERT_TRUE(queue.ok());
+    ASSERT_TRUE(queue.get() != nullptr);
+
+    size_t slot;
+    pdx::LocalHandle release_fence;
+    auto buffer = queue.get()->Dequeue(/*timeout=*/0, &slot, &release_fence);
+    ASSERT_TRUE(buffer.ok());
+    ASSERT_TRUE(buffer.get() != nullptr);
+
+    ASSERT_EQ(buffer.get()->width(), metrics.get().display_width);
+    ASSERT_EQ(buffer.get()->height(), metrics.get().display_height);
+
+    void* raw_buf = nullptr;
+    ASSERT_GE(buffer.get()->Lock(AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN,
+                                 /*x=*/0, /*y=*/0, buffer.get()->width(),
+                                 buffer.get()->height(), &raw_buf),
+              0);
+    ASSERT_NE(raw_buf, nullptr);
+    uint32_t* pixels = static_cast<uint32_t*>(raw_buf);
+
+    for (int i = 0; i < buffer.get()->stride() * buffer.get()->height(); ++i) {
+      pixels[i] = 0x0000ff00;
+    }
+
+    ASSERT_GE(buffer.get()->Unlock(), 0);
+
+    ASSERT_GE(buffer.get()->Post(/*ready_fence=*/pdx::LocalHandle(),
+                                 /*meta=*/nullptr,
+                                 /*user_metadata_size=*/0),
+              0);
+
+    ASSERT_EQ(
+        surface_flinger_connection->WaitForVrFlinger(/*wait_active=*/true),
+        SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
+  }
+
+  // Now that the vr flinger surface is destroyed, vr flinger should deactivate.
+  ASSERT_EQ(
+      surface_flinger_connection->WaitForVrFlinger(/*wait_active=*/false),
+      SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
+}
+
+// This test runs only on devices that boot to vr. Such a device should boot to
+// a state where vr flinger is running, and the test verifies this after a
+// delay.
+TEST(BootVrFlingerTest, BootsToVrFlinger) {
+  // Exit if we are not running on a device that boots to vr.
+  if (!property_get_bool("ro.boot.vr", false)) {
+    return;
+  }
+
+  auto surface_flinger_connection = SurfaceFlingerConnection::Create();
+  ASSERT_NE(surface_flinger_connection, nullptr);
+
+  // Verify that vr flinger is enabled.
+  ASSERT_TRUE(surface_flinger_connection->IsAlive());
+  auto vr_flinger_active = surface_flinger_connection->IsVrFlingerActive();
+  ASSERT_TRUE(vr_flinger_active.has_value());
+
+  bool active_value = vr_flinger_active.value();
+  if (!active_value) {
+    // Try again, but delay up to 30 seconds.
+    ASSERT_EQ(surface_flinger_connection->WaitForVrFlingerTimed(true,
+        kVrFlingerSwitchPollInterval, kBootVrFlingerWaitTimeout),
+        SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
+  }
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libvrflinger/tests/vrflinger_test.filter b/libs/vr/libvrflinger/tests/vrflinger_test.filter
new file mode 100644
index 0000000..030bb7b
--- /dev/null
+++ b/libs/vr/libvrflinger/tests/vrflinger_test.filter
@@ -0,0 +1,5 @@
+{
+        "presubmit": {
+            "filter": "BootVrFlingerTest.*"
+        }
+}
diff --git a/libs/vr/libvrflinger/vr_flinger.cpp b/libs/vr/libvrflinger/vr_flinger.cpp
index 26aed4f..b57383a 100644
--- a/libs/vr/libvrflinger/vr_flinger.cpp
+++ b/libs/vr/libvrflinger/vr_flinger.cpp
@@ -23,7 +23,6 @@
 #include "DisplayHardware/ComposerHal.h"
 #include "display_manager_service.h"
 #include "display_service.h"
-#include "vsync_service.h"
 
 namespace android {
 namespace dvr {
@@ -85,16 +84,6 @@
   CHECK_ERROR(!service, error, "Failed to create display manager service.");
   dispatcher_->AddService(service);
 
-  service = android::dvr::VSyncService::Create();
-  CHECK_ERROR(!service, error, "Failed to create vsync service.");
-  dispatcher_->AddService(service);
-
-  display_service_->SetVSyncCallback(
-      std::bind(&android::dvr::VSyncService::VSyncEvent,
-                std::static_pointer_cast<android::dvr::VSyncService>(service),
-                std::placeholders::_1, std::placeholders::_2,
-                std::placeholders::_3));
-
   dispatcher_thread_ = std::thread([this]() {
     prctl(PR_SET_NAME, reinterpret_cast<unsigned long>("VrDispatch"), 0, 0, 0);
     ALOGI("Entering message loop.");
diff --git a/libs/vr/libvrflinger/vsync_service.cpp b/libs/vr/libvrflinger/vsync_service.cpp
deleted file mode 100644
index b8d8b08..0000000
--- a/libs/vr/libvrflinger/vsync_service.cpp
+++ /dev/null
@@ -1,212 +0,0 @@
-#include "vsync_service.h"
-
-#include <hardware/hwcomposer.h>
-#include <log/log.h>
-#include <poll.h>
-#include <sys/prctl.h>
-#include <time.h>
-#include <utils/Trace.h>
-
-#include <dvr/dvr_display_types.h>
-#include <pdx/default_transport/service_endpoint.h>
-#include <private/dvr/clock_ns.h>
-#include <private/dvr/display_protocol.h>
-
-using android::dvr::display::VSyncProtocol;
-using android::dvr::display::VSyncSchedInfo;
-using android::pdx::Channel;
-using android::pdx::Message;
-using android::pdx::MessageInfo;
-using android::pdx::default_transport::Endpoint;
-using android::pdx::rpc::DispatchRemoteMethod;
-
-namespace android {
-namespace dvr {
-
-VSyncService::VSyncService()
-    : BASE("VSyncService", Endpoint::Create(VSyncProtocol::kClientPath)),
-      last_vsync_(0),
-      current_vsync_(0),
-      compositor_time_ns_(0),
-      current_vsync_count_(0) {}
-
-VSyncService::~VSyncService() {}
-
-void VSyncService::VSyncEvent(int64_t timestamp_ns,
-                              int64_t compositor_time_ns,
-                              uint32_t vsync_count) {
-  ATRACE_NAME("VSyncService::VSyncEvent");
-  std::lock_guard<std::mutex> autolock(mutex_);
-
-  last_vsync_ = current_vsync_;
-  current_vsync_ = timestamp_ns;
-  compositor_time_ns_ = compositor_time_ns;
-  current_vsync_count_ = vsync_count;
-
-  NotifyWaiters();
-  UpdateClients();
-}
-
-std::shared_ptr<Channel> VSyncService::OnChannelOpen(pdx::Message& message) {
-  const MessageInfo& info = message.GetInfo();
-
-  auto client = std::make_shared<VSyncChannel>(*this, info.pid, info.cid);
-  AddClient(client);
-
-  return client;
-}
-
-void VSyncService::OnChannelClose(pdx::Message& /*message*/,
-                                  const std::shared_ptr<Channel>& channel) {
-  auto client = std::static_pointer_cast<VSyncChannel>(channel);
-  if (!client) {
-    ALOGW("WARNING: VSyncChannel was NULL!!!\n");
-    return;
-  }
-
-  RemoveClient(client);
-}
-
-void VSyncService::AddWaiter(pdx::Message& message) {
-  std::lock_guard<std::mutex> autolock(mutex_);
-  std::unique_ptr<VSyncWaiter> waiter(new VSyncWaiter(message));
-  waiters_.push_back(std::move(waiter));
-}
-
-void VSyncService::AddClient(const std::shared_ptr<VSyncChannel>& client) {
-  std::lock_guard<std::mutex> autolock(mutex_);
-  clients_.push_back(client);
-}
-
-void VSyncService::RemoveClient(const std::shared_ptr<VSyncChannel>& client) {
-  std::lock_guard<std::mutex> autolock(mutex_);
-  clients_.remove(client);
-}
-
-// Private. Assumes mutex is held.
-void VSyncService::NotifyWaiters() {
-  ATRACE_NAME("VSyncService::NotifyWaiters");
-  auto first = waiters_.begin();
-  auto last = waiters_.end();
-
-  while (first != last) {
-    (*first)->Notify(current_vsync_);
-    waiters_.erase(first++);
-  }
-}
-
-// Private. Assumes mutex is held.
-void VSyncService::UpdateClients() {
-  ATRACE_NAME("VSyncService::UpdateClients");
-  auto first = clients_.begin();
-  auto last = clients_.end();
-
-  while (first != last) {
-    (*first)->Signal();
-    first++;
-  }
-}
-
-pdx::Status<void> VSyncService::HandleMessage(pdx::Message& message) {
-  ATRACE_NAME("VSyncService::HandleMessage");
-  switch (message.GetOp()) {
-    case VSyncProtocol::Wait::Opcode:
-      AddWaiter(message);
-      return {};
-
-    case VSyncProtocol::GetLastTimestamp::Opcode:
-      DispatchRemoteMethod<VSyncProtocol::GetLastTimestamp>(
-          *this, &VSyncService::OnGetLastTimestamp, message);
-      return {};
-
-    case VSyncProtocol::GetSchedInfo::Opcode:
-      DispatchRemoteMethod<VSyncProtocol::GetSchedInfo>(
-          *this, &VSyncService::OnGetSchedInfo, message);
-      return {};
-
-    case VSyncProtocol::Acknowledge::Opcode:
-      DispatchRemoteMethod<VSyncProtocol::Acknowledge>(
-          *this, &VSyncService::OnAcknowledge, message);
-      return {};
-
-    default:
-      return Service::HandleMessage(message);
-  }
-}
-
-pdx::Status<int64_t> VSyncService::OnGetLastTimestamp(pdx::Message& message) {
-  auto client = std::static_pointer_cast<VSyncChannel>(message.GetChannel());
-  std::lock_guard<std::mutex> autolock(mutex_);
-
-  // Getting the timestamp has the side effect of ACKing.
-  client->Ack();
-  return {current_vsync_};
-}
-
-pdx::Status<VSyncSchedInfo> VSyncService::OnGetSchedInfo(
-    pdx::Message& message) {
-  auto client = std::static_pointer_cast<VSyncChannel>(message.GetChannel());
-  std::lock_guard<std::mutex> autolock(mutex_);
-
-  // Getting the timestamp has the side effect of ACKing.
-  client->Ack();
-
-  uint32_t next_vsync_count = current_vsync_count_ + 1;
-  int64_t current_time = GetSystemClockNs();
-  int64_t vsync_period_ns = 0;
-  int64_t next_warp;
-  if (current_vsync_ == 0 || last_vsync_ == 0) {
-    // Handle startup when current_vsync_ or last_vsync_ are 0.
-    // Normally should not happen because vsync_service is running before
-    // applications, but in case it does a sane time prevents applications
-    // from malfunctioning.
-    vsync_period_ns = 20000000;
-    next_warp = current_time;
-  } else {
-    // TODO(jbates) When we have an accurate reading of the true vsync
-    // period, use that instead of this estimated value.
-    vsync_period_ns = current_vsync_ - last_vsync_;
-    // Clamp the period, because when there are no surfaces the last_vsync_
-    // value will get stale. Note this is temporary and goes away as soon
-    // as we have an accurate vsync period reported by the system.
-    vsync_period_ns = std::min(vsync_period_ns, INT64_C(20000000));
-    next_warp = current_vsync_ + vsync_period_ns - compositor_time_ns_;
-    // If the request missed the present window, move up to the next vsync.
-    if (current_time > next_warp) {
-      next_warp += vsync_period_ns;
-      ++next_vsync_count;
-    }
-  }
-
-  return {{vsync_period_ns, next_warp, next_vsync_count}};
-}
-
-pdx::Status<void> VSyncService::OnAcknowledge(pdx::Message& message) {
-  auto client = std::static_pointer_cast<VSyncChannel>(message.GetChannel());
-  std::lock_guard<std::mutex> autolock(mutex_);
-  client->Ack();
-  return {};
-}
-
-void VSyncWaiter::Notify(int64_t timestamp) {
-  timestamp_ = timestamp;
-  DispatchRemoteMethod<VSyncProtocol::Wait>(*this, &VSyncWaiter::OnWait,
-                                            message_);
-}
-
-pdx::Status<int64_t> VSyncWaiter::OnWait(pdx::Message& /*message*/) {
-  return {timestamp_};
-}
-
-void VSyncChannel::Ack() {
-  ALOGD_IF(TRACE > 1, "VSyncChannel::Ack: pid=%d cid=%d\n", pid_, cid_);
-  service_.ModifyChannelEvents(cid_, POLLPRI, 0);
-}
-
-void VSyncChannel::Signal() {
-  ALOGD_IF(TRACE > 1, "VSyncChannel::Signal: pid=%d cid=%d\n", pid_, cid_);
-  service_.ModifyChannelEvents(cid_, 0, POLLPRI);
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libvrflinger/vsync_service.h b/libs/vr/libvrflinger/vsync_service.h
deleted file mode 100644
index 822f02b..0000000
--- a/libs/vr/libvrflinger/vsync_service.h
+++ /dev/null
@@ -1,107 +0,0 @@
-#ifndef ANDROID_DVR_SERVICES_DISPLAYD_VSYNC_SERVICE_H_
-#define ANDROID_DVR_SERVICES_DISPLAYD_VSYNC_SERVICE_H_
-
-#include <pdx/service.h>
-
-#include <list>
-#include <memory>
-#include <mutex>
-#include <thread>
-
-#include "display_service.h"
-
-namespace android {
-namespace dvr {
-
-// VSyncWaiter encapsulates a client blocked waiting for the next vsync.
-// It is used to enqueue the Message to reply to when the next vsync event
-// occurs.
-class VSyncWaiter {
- public:
-  explicit VSyncWaiter(pdx::Message& message) : message_(std::move(message)) {}
-
-  void Notify(int64_t timestamp);
-
- private:
-  pdx::Status<int64_t> OnWait(pdx::Message& message);
-
-  pdx::Message message_;
-  int64_t timestamp_ = 0;
-
-  VSyncWaiter(const VSyncWaiter&) = delete;
-  void operator=(const VSyncWaiter&) = delete;
-};
-
-// VSyncChannel manages the service-side per-client context for each client
-// using the service.
-class VSyncChannel : public pdx::Channel {
- public:
-  VSyncChannel(pdx::Service& service, int pid, int cid)
-      : service_(service), pid_(pid), cid_(cid) {}
-
-  void Ack();
-  void Signal();
-
- private:
-  pdx::Service& service_;
-  pid_t pid_;
-  int cid_;
-
-  VSyncChannel(const VSyncChannel&) = delete;
-  void operator=(const VSyncChannel&) = delete;
-};
-
-// VSyncService implements the displayd vsync service over ServiceFS.
-class VSyncService : public pdx::ServiceBase<VSyncService> {
- public:
-  ~VSyncService() override;
-
-  pdx::Status<void> HandleMessage(pdx::Message& message) override;
-
-  std::shared_ptr<pdx::Channel> OnChannelOpen(pdx::Message& message) override;
-  void OnChannelClose(pdx::Message& message,
-                      const std::shared_ptr<pdx::Channel>& channel) override;
-
-  // Called by the hardware composer HAL, or similar, whenever a vsync event
-  // occurs on the primary display. |compositor_time_ns| is the number of ns
-  // before the next vsync when the compositor will preempt the GPU to do EDS
-  // and lens warp.
-  void VSyncEvent(int64_t timestamp_ns, int64_t compositor_time_ns,
-                  uint32_t vsync_count);
-
- private:
-  friend BASE;
-
-  VSyncService();
-
-  pdx::Status<int64_t> OnGetLastTimestamp(pdx::Message& message);
-  pdx::Status<display::VSyncSchedInfo> OnGetSchedInfo(pdx::Message& message);
-  pdx::Status<void> OnAcknowledge(pdx::Message& message);
-
-  void NotifierThreadFunction();
-
-  void AddWaiter(pdx::Message& message);
-  void NotifyWaiters();
-  void UpdateClients();
-
-  void AddClient(const std::shared_ptr<VSyncChannel>& client);
-  void RemoveClient(const std::shared_ptr<VSyncChannel>& client);
-
-  int64_t last_vsync_;
-  int64_t current_vsync_;
-  int64_t compositor_time_ns_;
-  uint32_t current_vsync_count_;
-
-  std::mutex mutex_;
-
-  std::list<std::unique_ptr<VSyncWaiter>> waiters_;
-  std::list<std::shared_ptr<VSyncChannel>> clients_;
-
-  VSyncService(const VSyncService&) = delete;
-  void operator=(VSyncService&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_SERVICES_DISPLAYD_VSYNC_SERVICE_H_
diff --git a/libs/vr/public.libraries-google.txt b/libs/vr/public.libraries-google.txt
new file mode 100644
index 0000000..8271b94
--- /dev/null
+++ b/libs/vr/public.libraries-google.txt
@@ -0,0 +1 @@
+libdvr.google.so
\ No newline at end of file
diff --git a/opengl/include/EGL/Platform.h b/opengl/include/EGL/Platform.h
new file mode 100644
index 0000000..624d31f
--- /dev/null
+++ b/opengl/include/EGL/Platform.h
@@ -0,0 +1,329 @@
+//
+// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Platform.h: The public interface ANGLE exposes to the API layer, for
+//   doing platform-specific tasks like gathering data, or for tracing.
+
+#ifndef ANGLE_PLATFORM_H
+#define ANGLE_PLATFORM_H
+
+#include <stdint.h>
+#include <array>
+
+#define EGL_PLATFORM_ANGLE_PLATFORM_METHODS_ANGLEX 0x3482
+
+#if defined(_WIN32)
+#   if !defined(LIBANGLE_IMPLEMENTATION)
+#       define ANGLE_PLATFORM_EXPORT __declspec(dllimport)
+#   else
+#       define ANGLE_PLATFORM_EXPORT __declspec(dllexport)
+#   endif
+#elif defined(__GNUC__) || defined(__clang__)
+#   define ANGLE_PLATFORM_EXPORT __attribute__((visibility ("default")))
+#endif
+#if !defined(ANGLE_PLATFORM_EXPORT)
+#   define ANGLE_PLATFORM_EXPORT
+#endif
+
+#if defined(_WIN32)
+#   define ANGLE_APIENTRY __stdcall
+#else
+#   define ANGLE_APIENTRY
+#endif
+
+namespace angle
+{
+struct WorkaroundsD3D;
+using TraceEventHandle = uint64_t;
+using EGLDisplayType   = void *;
+struct PlatformMethods;
+
+// Use a C-like API to not trigger undefined calling behaviour.
+// Avoid using decltype here to work around sanitizer limitations.
+// TODO(jmadill): Use decltype here if/when UBSAN is fixed.
+
+// System --------------------------------------------------------------
+
+// Wall clock time in seconds since the epoch.
+// TODO(jmadill): investigate using an ANGLE internal time library
+using CurrentTimeFunc = double (*)(PlatformMethods *platform);
+inline double DefaultCurrentTime(PlatformMethods *platform)
+{
+    return 0.0;
+}
+
+// Monotonically increasing time in seconds from an arbitrary fixed point in the past.
+// This function is expected to return at least millisecond-precision values. For this reason,
+// it is recommended that the fixed point be no further in the past than the epoch.
+using MonotonicallyIncreasingTimeFunc = double (*)(PlatformMethods *platform);
+inline double DefaultMonotonicallyIncreasingTime(PlatformMethods *platform)
+{
+    return 0.0;
+}
+
+// Logging ------------------------------------------------------------
+
+// Log an error message within the platform implementation.
+using LogErrorFunc = void (*)(PlatformMethods *platform, const char *errorMessage);
+inline void DefaultLogError(PlatformMethods *platform, const char *errorMessage)
+{
+}
+
+// Log a warning message within the platform implementation.
+using LogWarningFunc = void (*)(PlatformMethods *platform, const char *warningMessage);
+inline void DefaultLogWarning(PlatformMethods *platform, const char *warningMessage)
+{
+}
+
+// Log an info message within the platform implementation.
+using LogInfoFunc = void (*)(PlatformMethods *platform, const char *infoMessage);
+inline void DefaultLogInfo(PlatformMethods *platform, const char *infoMessage)
+{
+}
+
+// Tracing --------
+
+// Get a pointer to the enabled state of the given trace category. The
+// embedder can dynamically change the enabled state as trace event
+// recording is started and stopped by the application. Only long-lived
+// literal strings should be given as the category name. The implementation
+// expects the returned pointer to be held permanently in a local static. If
+// the unsigned char is non-zero, tracing is enabled. If tracing is enabled,
+// addTraceEvent is expected to be called by the trace event macros.
+using GetTraceCategoryEnabledFlagFunc = const unsigned char *(*)(PlatformMethods *platform,
+                                                                 const char *categoryName);
+inline const unsigned char *DefaultGetTraceCategoryEnabledFlag(PlatformMethods *platform,
+                                                               const char *categoryName)
+{
+    return nullptr;
+}
+
+//
+// Add a trace event to the platform tracing system. Depending on the actual
+// enabled state, this event may be recorded or dropped.
+// - phase specifies the type of event:
+//   - BEGIN ('B'): Marks the beginning of a scoped event.
+//   - END ('E'): Marks the end of a scoped event.
+//   - COMPLETE ('X'): Marks the beginning of a scoped event, but doesn't
+//     need a matching END event. Instead, at the end of the scope,
+//     updateTraceEventDuration() must be called with the TraceEventHandle
+//     returned from addTraceEvent().
+//   - INSTANT ('I'): Standalone, instantaneous event.
+//   - START ('S'): Marks the beginning of an asynchronous event (the end
+//     event can occur in a different scope or thread). The id parameter is
+//     used to match START/FINISH pairs.
+//   - FINISH ('F'): Marks the end of an asynchronous event.
+//   - COUNTER ('C'): Used to trace integer quantities that change over
+//     time. The argument values are expected to be of type int.
+//   - METADATA ('M'): Reserved for internal use.
+// - categoryEnabled is the pointer returned by getTraceCategoryEnabledFlag.
+// - name is the name of the event. Also used to match BEGIN/END and
+//   START/FINISH pairs.
+// - id optionally allows events of the same name to be distinguished from
+//   each other. For example, to trace the construction and destruction of
+//   objects, specify the pointer as the id parameter.
+// - timestamp should be a time value returned from monotonicallyIncreasingTime.
+// - numArgs specifies the number of elements in argNames, argTypes, and
+//   argValues.
+// - argNames is the array of argument names. Use long-lived literal strings
+//   or specify the COPY flag.
+// - argTypes is the array of argument types:
+//   - BOOL (1): bool
+//   - UINT (2): unsigned long long
+//   - INT (3): long long
+//   - DOUBLE (4): double
+//   - POINTER (5): void*
+//   - STRING (6): char* (long-lived null-terminated char* string)
+//   - COPY_STRING (7): char* (temporary null-terminated char* string)
+//   - CONVERTABLE (8): WebConvertableToTraceFormat
+// - argValues is the array of argument values. Each value is the unsigned
+//   long long member of a union of all supported types.
+// - flags can be 0 or one or more of the following, ORed together:
+//   - COPY (0x1): treat all strings (name, argNames and argValues of type
+//     string) as temporary so that they will be copied by addTraceEvent.
+//   - HAS_ID (0x2): use the id argument to uniquely identify the event for
+//     matching with other events of the same name.
+//   - MANGLE_ID (0x4): specify this flag if the id parameter is the value
+//     of a pointer.
+using AddTraceEventFunc = angle::TraceEventHandle (*)(PlatformMethods *platform,
+                                                      char phase,
+                                                      const unsigned char *categoryEnabledFlag,
+                                                      const char *name,
+                                                      unsigned long long id,
+                                                      double timestamp,
+                                                      int numArgs,
+                                                      const char **argNames,
+                                                      const unsigned char *argTypes,
+                                                      const unsigned long long *argValues,
+                                                      unsigned char flags);
+inline angle::TraceEventHandle DefaultAddTraceEvent(PlatformMethods *platform,
+                                                    char phase,
+                                                    const unsigned char *categoryEnabledFlag,
+                                                    const char *name,
+                                                    unsigned long long id,
+                                                    double timestamp,
+                                                    int numArgs,
+                                                    const char **argNames,
+                                                    const unsigned char *argTypes,
+                                                    const unsigned long long *argValues,
+                                                    unsigned char flags)
+{
+    return 0;
+}
+
+// Set the duration field of a COMPLETE trace event.
+using UpdateTraceEventDurationFunc = void (*)(PlatformMethods *platform,
+                                              const unsigned char *categoryEnabledFlag,
+                                              const char *name,
+                                              angle::TraceEventHandle eventHandle);
+inline void DefaultUpdateTraceEventDuration(PlatformMethods *platform,
+                                            const unsigned char *categoryEnabledFlag,
+                                            const char *name,
+                                            angle::TraceEventHandle eventHandle)
+{
+}
+
+// Callbacks for reporting histogram data.
+// CustomCounts histogram has exponential bucket sizes, so that min=1, max=1000000, bucketCount=50
+// would do.
+using HistogramCustomCountsFunc = void (*)(PlatformMethods *platform,
+                                           const char *name,
+                                           int sample,
+                                           int min,
+                                           int max,
+                                           int bucketCount);
+inline void DefaultHistogramCustomCounts(PlatformMethods *platform,
+                                         const char *name,
+                                         int sample,
+                                         int min,
+                                         int max,
+                                         int bucketCount)
+{
+}
+// Enumeration histogram buckets are linear, boundaryValue should be larger than any possible sample
+// value.
+using HistogramEnumerationFunc = void (*)(PlatformMethods *platform,
+                                          const char *name,
+                                          int sample,
+                                          int boundaryValue);
+inline void DefaultHistogramEnumeration(PlatformMethods *platform,
+                                        const char *name,
+                                        int sample,
+                                        int boundaryValue)
+{
+}
+// Unlike enumeration histograms, sparse histograms only allocate memory for non-empty buckets.
+using HistogramSparseFunc = void (*)(PlatformMethods *platform, const char *name, int sample);
+inline void DefaultHistogramSparse(PlatformMethods *platform, const char *name, int sample)
+{
+}
+// Boolean histograms track two-state variables.
+using HistogramBooleanFunc = void (*)(PlatformMethods *platform, const char *name, bool sample);
+inline void DefaultHistogramBoolean(PlatformMethods *platform, const char *name, bool sample)
+{
+}
+
+// Allows us to programatically override ANGLE's default workarounds for testing purposes.
+using OverrideWorkaroundsD3DFunc = void (*)(PlatformMethods *platform,
+                                            angle::WorkaroundsD3D *workaroundsD3D);
+inline void DefaultOverrideWorkaroundsD3D(PlatformMethods *platform,
+                                          angle::WorkaroundsD3D *workaroundsD3D)
+{
+}
+
+// Callback on a successful program link with the program binary. Can be used to store
+// shaders to disk. Keys are a 160-bit SHA-1 hash.
+using ProgramKeyType   = std::array<uint8_t, 20>;
+using CacheProgramFunc = void (*)(PlatformMethods *platform,
+                                  const ProgramKeyType &key,
+                                  size_t programSize,
+                                  const uint8_t *programBytes);
+inline void DefaultCacheProgram(PlatformMethods *platform,
+                                const ProgramKeyType &key,
+                                size_t programSize,
+                                const uint8_t *programBytes)
+{
+}
+
+// Platform methods are enumerated here once.
+#define ANGLE_PLATFORM_OP(OP)                                    \
+    OP(currentTime, CurrentTime)                                 \
+    OP(monotonicallyIncreasingTime, MonotonicallyIncreasingTime) \
+    OP(logError, LogError)                                       \
+    OP(logWarning, LogWarning)                                   \
+    OP(logInfo, LogInfo)                                         \
+    OP(getTraceCategoryEnabledFlag, GetTraceCategoryEnabledFlag) \
+    OP(addTraceEvent, AddTraceEvent)                             \
+    OP(updateTraceEventDuration, UpdateTraceEventDuration)       \
+    OP(histogramCustomCounts, HistogramCustomCounts)             \
+    OP(histogramEnumeration, HistogramEnumeration)               \
+    OP(histogramSparse, HistogramSparse)                         \
+    OP(histogramBoolean, HistogramBoolean)                       \
+    OP(overrideWorkaroundsD3D, OverrideWorkaroundsD3D)           \
+    OP(cacheProgram, CacheProgram)
+
+#define ANGLE_PLATFORM_METHOD_DEF(Name, CapsName) CapsName##Func Name = Default##CapsName;
+
+struct ANGLE_PLATFORM_EXPORT PlatformMethods
+{
+    PlatformMethods() {}
+
+    // User data pointer for any implementation specific members. Put it at the start of the
+    // platform structure so it doesn't become overwritten if one version of the platform
+    // adds or removes new members.
+    void *context = 0;
+
+    ANGLE_PLATFORM_OP(ANGLE_PLATFORM_METHOD_DEF);
+};
+
+#undef ANGLE_PLATFORM_METHOD_DEF
+
+// Subtract one to account for the context pointer.
+constexpr unsigned int g_NumPlatformMethods = (sizeof(PlatformMethods) / sizeof(uintptr_t)) - 1;
+
+#define ANGLE_PLATFORM_METHOD_STRING(Name) #Name
+#define ANGLE_PLATFORM_METHOD_STRING2(Name, CapsName) ANGLE_PLATFORM_METHOD_STRING(Name),
+
+constexpr const char *const g_PlatformMethodNames[g_NumPlatformMethods] = {
+    ANGLE_PLATFORM_OP(ANGLE_PLATFORM_METHOD_STRING2)};
+
+#undef ANGLE_PLATFORM_METHOD_STRING2
+#undef ANGLE_PLATFORM_METHOD_STRING
+
+}  // namespace angle
+
+extern "C" {
+
+// Gets the platform methods on the passed-in EGL display. If the method name signature does not
+// match the compiled signature for this ANGLE, false is returned. On success true is returned.
+// The application should set any platform methods it cares about on the returned pointer.
+// If display is not valid, behaviour is undefined.
+
+ANGLE_PLATFORM_EXPORT bool ANGLE_APIENTRY ANGLEGetDisplayPlatform(angle::EGLDisplayType display,
+                                                                  const char *const methodNames[],
+                                                                  unsigned int methodNameCount,
+                                                                  void *context,
+                                                                  void *platformMethodsOut);
+
+// Sets the platform methods back to their defaults.
+// If display is not valid, behaviour is undefined.
+ANGLE_PLATFORM_EXPORT void ANGLE_APIENTRY ANGLEResetDisplayPlatform(angle::EGLDisplayType display);
+
+}  // extern "C"
+
+namespace angle
+{
+typedef bool(ANGLE_APIENTRY *GetDisplayPlatformFunc)(angle::EGLDisplayType,
+                                                     const char *const *,
+                                                     unsigned int,
+                                                     void *,
+                                                     void *);
+typedef void(ANGLE_APIENTRY *ResetDisplayPlatformFunc)(angle::EGLDisplayType);
+}  // namespace angle
+
+// This function is not exported
+angle::PlatformMethods *ANGLEPlatformCurrent();
+
+#endif // ANGLE_PLATFORM_H
diff --git a/opengl/include/EGL/eglext.h b/opengl/include/EGL/eglext.h
index 44f4dbc..0fd91eb 100644
--- a/opengl/include/EGL/eglext.h
+++ b/opengl/include/EGL/eglext.h
@@ -1285,17 +1285,6 @@
 #define EGL_NATIVE_SURFACE_TIZEN          0x32A1
 #endif /* EGL_TIZEN_image_native_surface */
 
-/* This is a private Android extension that does not exist in the EGL registry,
- * formerly used to work around a hardware issue on Nexus 4. It is deprecated
- * and unimplemented. It has been added to this header manually. */
-#ifndef EGL_ANDROID_image_crop
-#define EGL_ANDROID_image_crop 1
-#define EGL_IMAGE_CROP_LEFT_ANDROID       0x3148
-#define EGL_IMAGE_CROP_TOP_ANDROID        0x3149
-#define EGL_IMAGE_CROP_RIGHT_ANDROID      0x314A
-#define EGL_IMAGE_CROP_BOTTOM_ANDROID     0x314B
-#endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/opengl/include/EGL/eglext_angle.h b/opengl/include/EGL/eglext_angle.h
new file mode 100644
index 0000000..0556ea1
--- /dev/null
+++ b/opengl/include/EGL/eglext_angle.h
@@ -0,0 +1,191 @@
+//
+// Copyright (c) 2017 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// eglext_angle.h: ANGLE modifications to the eglext.h header file.
+//   Currently we don't include this file directly, we patch eglext.h
+//   to include it implicitly so it is visible throughout our code.
+
+#ifndef INCLUDE_EGL_EGLEXT_ANGLE_
+#define INCLUDE_EGL_EGLEXT_ANGLE_
+
+// clang-format off
+
+#ifndef EGL_ANGLE_robust_resource_initialization
+#define EGL_ANGLE_robust_resource_initialization 1
+#define EGL_ROBUST_RESOURCE_INITIALIZATION_ANGLE 0x3453
+#endif /* EGL_ANGLE_robust_resource_initialization */
+
+#ifndef EGL_ANGLE_keyed_mutex
+#define EGL_ANGLE_keyed_mutex 1
+#define EGL_DXGI_KEYED_MUTEX_ANGLE        0x33A2
+#endif /* EGL_ANGLE_keyed_mutex */
+
+#ifndef EGL_ANGLE_d3d_texture_client_buffer
+#define EGL_ANGLE_d3d_texture_client_buffer 1
+#define EGL_D3D_TEXTURE_ANGLE             0x33A3
+#endif /* EGL_ANGLE_d3d_texture_client_buffer */
+
+#ifndef EGL_ANGLE_software_display
+#define EGL_ANGLE_software_display 1
+#define EGL_SOFTWARE_DISPLAY_ANGLE ((EGLNativeDisplayType)-1)
+#endif /* EGL_ANGLE_software_display */
+
+#ifndef EGL_ANGLE_direct3d_display
+#define EGL_ANGLE_direct3d_display 1
+#define EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE ((EGLNativeDisplayType)-2)
+#define EGL_D3D11_ONLY_DISPLAY_ANGLE ((EGLNativeDisplayType)-3)
+#endif /* EGL_ANGLE_direct3d_display */
+
+#ifndef EGL_ANGLE_direct_composition
+#define EGL_ANGLE_direct_composition 1
+#define EGL_DIRECT_COMPOSITION_ANGLE 0x33A5
+#endif /* EGL_ANGLE_direct_composition */
+
+#ifndef EGL_ANGLE_platform_angle
+#define EGL_ANGLE_platform_angle 1
+#define EGL_PLATFORM_ANGLE_ANGLE          0x3202
+#define EGL_PLATFORM_ANGLE_TYPE_ANGLE     0x3203
+#define EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE 0x3204
+#define EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE 0x3205
+#define EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE 0x3206
+#define EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE 0x3451
+#define EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE 0x3209
+#define EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE 0x320A
+#define EGL_PLATFORM_ANGLE_DEVICE_TYPE_NULL_ANGLE 0x345E
+#endif /* EGL_ANGLE_platform_angle */
+
+#ifndef EGL_ANGLE_platform_angle_d3d
+#define EGL_ANGLE_platform_angle_d3d 1
+#define EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE 0x3207
+#define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE 0x3208
+#define EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_WARP_ANGLE 0x320B
+#define EGL_PLATFORM_ANGLE_DEVICE_TYPE_D3D_REFERENCE_ANGLE 0x320C
+#define EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE 0x320F
+#endif /* EGL_ANGLE_platform_angle_d3d */
+
+#ifndef EGL_ANGLE_platform_angle_opengl
+#define EGL_ANGLE_platform_angle_opengl 1
+#define EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE 0x320D
+#define EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE 0x320E
+#define EGL_PLATFORM_ANGLE_EGL_HANDLE_ANGLE 0x3480
+#endif /* EGL_ANGLE_platform_angle_opengl */
+
+#ifndef EGL_ANGLE_platform_angle_null
+#define EGL_ANGLE_platform_angle_null 1
+#define EGL_PLATFORM_ANGLE_TYPE_NULL_ANGLE 0x33AE
+#endif /* EGL_ANGLE_platform_angle_null */
+
+#ifndef EGL_ANGLE_platform_angle_vulkan
+#define EGL_ANGLE_platform_angle_vulkan 1
+#define EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE 0x3450
+#endif /* EGL_ANGLE_platform_angle_vulkan */
+
+#ifndef EGL_ANGLE_platform_angle_context_virtualization
+#define EGL_ANGLE_platform_angle_context_virtualization 1
+#define EGL_PLATFORM_ANGLE_CONTEXT_VIRTUALIZATION_ANGLE 0x3481
+#endif /* EGL_ANGLE_platform_angle_context_virtualization */
+
+#ifndef EGL_ANGLE_x11_visual
+#define EGL_ANGLE_x11_visual
+#define EGL_X11_VISUAL_ID_ANGLE 0x33A3
+#endif /* EGL_ANGLE_x11_visual */
+
+#ifndef EGL_ANGLE_flexible_surface_compatibility
+#define EGL_ANGLE_flexible_surface_compatibility 1
+#define EGL_FLEXIBLE_SURFACE_COMPATIBILITY_SUPPORTED_ANGLE 0x33A6
+#endif /* EGL_ANGLE_flexible_surface_compatibility */
+
+#ifndef EGL_ANGLE_surface_orientation
+#define EGL_ANGLE_surface_orientation
+#define EGL_OPTIMAL_SURFACE_ORIENTATION_ANGLE 0x33A7
+#define EGL_SURFACE_ORIENTATION_ANGLE 0x33A8
+#define EGL_SURFACE_ORIENTATION_INVERT_X_ANGLE 0x0001
+#define EGL_SURFACE_ORIENTATION_INVERT_Y_ANGLE 0x0002
+#endif /* EGL_ANGLE_surface_orientation */
+
+#ifndef EGL_ANGLE_experimental_present_path
+#define EGL_ANGLE_experimental_present_path
+#define EGL_EXPERIMENTAL_PRESENT_PATH_ANGLE 0x33A4
+#define EGL_EXPERIMENTAL_PRESENT_PATH_FAST_ANGLE 0x33A9
+#define EGL_EXPERIMENTAL_PRESENT_PATH_COPY_ANGLE 0x33AA
+#endif /* EGL_ANGLE_experimental_present_path */
+
+#ifndef EGL_ANGLE_stream_producer_d3d_texture
+#define EGL_ANGLE_stream_producer_d3d_texture
+#define EGL_D3D_TEXTURE_SUBRESOURCE_ID_ANGLE 0x33AB
+typedef EGLBoolean(EGLAPIENTRYP PFNEGLCREATESTREAMPRODUCERD3DTEXTUREANGLEPROC)(EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib *attrib_list);
+typedef EGLBoolean(EGLAPIENTRYP PFNEGLSTREAMPOSTD3DTEXTUREANGLEPROC)(EGLDisplay dpy, EGLStreamKHR stream, void *texture, const EGLAttrib *attrib_list);
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLBoolean EGLAPIENTRY eglCreateStreamProducerD3DTextureANGLE(EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib *attrib_list);
+EGLAPI EGLBoolean EGLAPIENTRY eglStreamPostD3DTextureANGLE(EGLDisplay dpy, EGLStreamKHR stream, void *texture, const EGLAttrib *attrib_list);
+#endif
+#endif /* EGL_ANGLE_stream_producer_d3d_texture */
+
+#ifndef EGL_ANGLE_create_context_webgl_compatibility
+#define EGL_ANGLE_create_context_webgl_compatibility 1
+#define EGL_CONTEXT_WEBGL_COMPATIBILITY_ANGLE 0x33AC
+#endif /* EGL_ANGLE_create_context_webgl_compatibility */
+
+#ifndef EGL_ANGLE_display_texture_share_group
+#define EGL_ANGLE_display_texture_share_group 1
+#define EGL_DISPLAY_TEXTURE_SHARE_GROUP_ANGLE 0x33AF
+#endif /* EGL_ANGLE_display_texture_share_group */
+
+#ifndef EGL_CHROMIUM_create_context_bind_generates_resource
+#define EGL_CHROMIUM_create_context_bind_generates_resource 1
+#define EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM 0x33AD
+#endif /* EGL_CHROMIUM_create_context_bind_generates_resource */
+
+#ifndef EGL_ANGLE_create_context_client_arrays
+#define EGL_ANGLE_create_context_client_arrays 1
+#define EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE 0x3452
+#endif /* EGL_ANGLE_create_context_client_arrays */
+
+#ifndef EGL_ANGLE_device_creation
+#define EGL_ANGLE_device_creation 1
+typedef EGLDeviceEXT(EGLAPIENTRYP PFNEGLCREATEDEVICEANGLEPROC) (EGLint device_type, void *native_device, const EGLAttrib *attrib_list);
+typedef EGLBoolean(EGLAPIENTRYP PFNEGLRELEASEDEVICEANGLEPROC) (EGLDeviceEXT device);
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLDeviceEXT EGLAPIENTRY eglCreateDeviceANGLE(EGLint device_type, void *native_device, const EGLAttrib *attrib_list);
+EGLAPI EGLBoolean EGLAPIENTRY eglReleaseDeviceANGLE(EGLDeviceEXT device);
+#endif
+#endif /* EGL_ANGLE_device_creation */
+
+#ifndef EGL_ANGLE_program_cache_control
+#define EGL_ANGLE_program_cache_control 1
+#define EGL_PROGRAM_CACHE_SIZE_ANGLE 0x3455
+#define EGL_PROGRAM_CACHE_KEY_LENGTH_ANGLE 0x3456
+#define EGL_PROGRAM_CACHE_RESIZE_ANGLE 0x3457
+#define EGL_PROGRAM_CACHE_TRIM_ANGLE 0x3458
+#define EGL_CONTEXT_PROGRAM_BINARY_CACHE_ENABLED_ANGLE 0x3459
+typedef EGLint (EGLAPIENTRYP PFNEGLPROGRAMCACHEGETATTRIBANGLEPROC) (EGLDisplay dpy, EGLenum attrib);
+typedef void (EGLAPIENTRYP PFNEGLPROGRAMCACHEQUERYANGLEPROC) (EGLDisplay dpy, EGLint index, void *key, EGLint *keysize, void *binary, EGLint *binarysize);
+typedef void (EGLAPIENTRYP PFNEGPROGRAMCACHELPOPULATEANGLEPROC) (EGLDisplay dpy, const void *key, EGLint keysize, const void *binary, EGLint binarysize);
+typedef EGLint (EGLAPIENTRYP PFNEGLPROGRAMCACHERESIZEANGLEPROC) (EGLDisplay dpy, EGLint limit, EGLenum mode);
+#ifdef EGL_EGLEXT_PROTOTYPES
+EGLAPI EGLint EGLAPIENTRY eglProgramCacheGetAttribANGLE(EGLDisplay dpy, EGLenum attrib);
+EGLAPI void EGLAPIENTRY eglProgramCacheQueryANGLE(EGLDisplay dpy, EGLint index, void *key, EGLint *keysize, void *binary, EGLint *binarysize);
+EGLAPI void EGLAPIENTRY eglProgramCachePopulateANGLE(EGLDisplay dpy, const void *key, EGLint keysize, const void *binary, EGLint binarysize);
+EGLAPI EGLint EGLAPIENTRY eglProgramCacheResizeANGLE(EGLDisplay dpy, EGLint limit, EGLenum mode);
+#endif
+#endif /* EGL_ANGLE_program_cache_control */
+
+#ifndef EGL_ANGLE_iosurface_client_buffer
+#define EGL_ANGLE_iosurface_client_buffer 1
+#define EGL_IOSURFACE_ANGLE 0x3454
+#define EGL_IOSURFACE_PLANE_ANGLE 0x345A
+#define EGL_TEXTURE_RECTANGLE_ANGLE 0x345B
+#define EGL_TEXTURE_TYPE_ANGLE 0x345C
+#define EGL_TEXTURE_INTERNAL_FORMAT_ANGLE 0x345D
+#endif /* EGL_ANGLE_iosurface_client_buffer */
+
+#ifndef EGL_ANGLE_create_context_extensions_enabled
+#define EGL_ANGLE_create_context_extensions_enabled 1
+#define EGL_EXTENSIONS_ENABLED_ANGLE 0x345F
+#endif /* EGL_ANGLE_create_context_extensions_enabled */
+
+// clang-format on
+
+#endif // INCLUDE_EGL_EGLEXT_ANGLE_
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index d43c164..2a6dee4 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -143,6 +143,7 @@
         "EGL/egl.cpp",
         "EGL/eglApi.cpp",
         "EGL/Loader.cpp",
+        "EGL/egl_angle_platform.cpp",
     ],
     shared_libs: [
         "libvndksupport",
diff --git a/opengl/libs/EGL/BlobCache.cpp b/opengl/libs/EGL/BlobCache.cpp
index b3752f5..74c4d7d 100644
--- a/opengl/libs/EGL/BlobCache.cpp
+++ b/opengl/libs/EGL/BlobCache.cpp
@@ -79,7 +79,7 @@
     }
 
     std::shared_ptr<Blob> dummyKey(new Blob(key, keySize, false));
-    CacheEntry dummyEntry(dummyKey, NULL);
+    CacheEntry dummyEntry(dummyKey, nullptr);
 
     while (true) {
         auto index = std::lower_bound(mCacheEntries.begin(), mCacheEntries.end(), dummyEntry);
@@ -139,7 +139,7 @@
         return 0;
     }
     std::shared_ptr<Blob> dummyKey(new Blob(key, keySize, false));
-    CacheEntry dummyEntry(dummyKey, NULL);
+    CacheEntry dummyEntry(dummyKey, nullptr);
     auto index = std::lower_bound(mCacheEntries.begin(), mCacheEntries.end(), dummyEntry);
     if (index == mCacheEntries.end() || dummyEntry < *index) {
         ALOGV("get: no cache entry found for key of size %zu", keySize);
@@ -308,7 +308,7 @@
         mData(copyData ? malloc(size) : data),
         mSize(size),
         mOwnsData(copyData) {
-    if (data != NULL && copyData) {
+    if (data != nullptr && copyData) {
         memcpy(const_cast<void*>(mData), data, size);
     }
 }
diff --git a/opengl/libs/EGL/BlobCache.h b/opengl/libs/EGL/BlobCache.h
index 1f5d535..e5c5e5b 100644
--- a/opengl/libs/EGL/BlobCache.h
+++ b/opengl/libs/EGL/BlobCache.h
@@ -97,6 +97,10 @@
     //
     int unflatten(void const* buffer, size_t size);
 
+    // clear flushes out all contents of the cache then the BlobCache, leaving
+    // it in an empty state.
+    void clear() { mCacheEntries.clear(); }
+
 protected:
     // mMaxTotalSize is the maximum size that all cache entries can occupy. This
     // includes space for both keys and values. When a call to BlobCache::set
diff --git a/opengl/libs/EGL/BlobCache_test.cpp b/opengl/libs/EGL/BlobCache_test.cpp
index edbaaf0..cf67cf4 100644
--- a/opengl/libs/EGL/BlobCache_test.cpp
+++ b/opengl/libs/EGL/BlobCache_test.cpp
@@ -97,7 +97,7 @@
 
 TEST_F(BlobCacheTest, GetDoesntAccessNullBuffer) {
     mBC->set("abcd", 4, "efgh", 4);
-    ASSERT_EQ(size_t(4), mBC->get("abcd", 4, NULL, 0));
+    ASSERT_EQ(size_t(4), mBC->get("abcd", 4, nullptr, 0));
 }
 
 TEST_F(BlobCacheTest, MultipleSetsCacheLatestValue) {
@@ -169,7 +169,7 @@
     }
 
     mBC->set(key, MAX_KEY_SIZE, buf, MAX_VALUE_SIZE);
-    ASSERT_EQ(size_t(0), mBC->get(key, MAX_KEY_SIZE, NULL, 0));
+    ASSERT_EQ(size_t(0), mBC->get(key, MAX_KEY_SIZE, nullptr, 0));
 }
 
 TEST_F(BlobCacheTest, CacheMaxKeySizeSucceeds) {
@@ -219,7 +219,7 @@
     }
 
     mBC->set(key, MAX_KEY_SIZE, buf, bufSize);
-    ASSERT_EQ(size_t(bufSize), mBC->get(key, MAX_KEY_SIZE, NULL, 0));
+    ASSERT_EQ(size_t(bufSize), mBC->get(key, MAX_KEY_SIZE, nullptr, 0));
 }
 
 TEST_F(BlobCacheTest, CacheMinKeyAndValueSizeSucceeds) {
@@ -237,7 +237,7 @@
     int numCached = 0;
     for (int i = 0; i < 256; i++) {
         uint8_t k = i;
-        if (mBC->get(&k, 1, NULL, 0) == 1) {
+        if (mBC->get(&k, 1, nullptr, 0) == 1) {
             numCached++;
         }
     }
@@ -260,7 +260,7 @@
     int numCached = 0;
     for (int i = 0; i < maxEntries+1; i++) {
         uint8_t k = i;
-        if (mBC->get(&k, 1, NULL, 0) == 1) {
+        if (mBC->get(&k, 1, nullptr, 0) == 1) {
             numCached++;
         }
     }
diff --git a/opengl/libs/EGL/FileBlobCache.cpp b/opengl/libs/EGL/FileBlobCache.cpp
index 7923715..cc42ac7 100644
--- a/opengl/libs/EGL/FileBlobCache.cpp
+++ b/opengl/libs/EGL/FileBlobCache.cpp
@@ -77,7 +77,7 @@
             return;
         }
 
-        uint8_t* buf = reinterpret_cast<uint8_t*>(mmap(NULL, fileSize,
+        uint8_t* buf = reinterpret_cast<uint8_t*>(mmap(nullptr, fileSize,
                 PROT_READ, MAP_PRIVATE, fd, 0));
         if (buf == MAP_FAILED) {
             ALOGE("error mmaping cache file: %s (%d)", strerror(errno),
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index 91a3455..1421a48 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -38,6 +38,18 @@
 
 extern "C" {
   android_namespace_t* android_get_exported_namespace(const char*);
+
+  // TODO(ianelliott@): Get this from an ANGLE header:
+  typedef enum ANGLEPreference {
+      ANGLE_NO_PREFERENCE = 0,
+      ANGLE_PREFER_NATIVE = 1,
+      ANGLE_PREFER_ANGLE = 2,
+  } ANGLEPreference;
+
+  // TODO(ianelliott@): Get this from an ANGLE header:
+  typedef bool (*fpANGLEUseForApplication)(const char* appName, const char* deviceMfr,
+                                           const char* deviceModel, ANGLEPreference developerOption,
+                                           ANGLEPreference appPreference);
 }
 
 // ----------------------------------------------------------------------------
@@ -129,7 +141,7 @@
 {
     dso[0] = gles;
     for (size_t i=1 ; i<NELEM(dso) ; i++)
-        dso[i] = 0;
+        dso[i] = nullptr;
 }
 
 Loader::driver_t::~driver_t()
@@ -137,7 +149,7 @@
     for (size_t i=0 ; i<NELEM(dso) ; i++) {
         if (dso[i]) {
             dlclose(dso[i]);
-            dso[i] = 0;
+            dso[i] = nullptr;
         }
     }
 }
@@ -163,7 +175,7 @@
 // ----------------------------------------------------------------------------
 
 Loader::Loader()
-    : getProcAddress(NULL)
+    : getProcAddress(nullptr)
 {
 }
 
@@ -221,7 +233,7 @@
     ATRACE_CALL();
 
     void* dso;
-    driver_t* hnd = 0;
+    driver_t* hnd = nullptr;
 
     setEmulatorGlesValue();
 
@@ -272,11 +284,11 @@
         char const * name = *api;
         __eglMustCastToProperFunctionPointerType f =
             (__eglMustCastToProperFunctionPointerType)dlsym(dso, name);
-        if (f == NULL) {
+        if (f == nullptr) {
             // couldn't find the entry-point, use eglGetProcAddress()
             f = getProcAddress(name);
         }
-        if (f == NULL) {
+        if (f == nullptr) {
             // Try without the OES postfix
             ssize_t index = ssize_t(strlen(name)) - 3;
             if ((index>0 && (index<SIZE-1)) && (!strcmp(name+index, "OES"))) {
@@ -286,7 +298,7 @@
                 //ALOGD_IF(f, "found <%s> instead", scrap);
             }
         }
-        if (f == NULL) {
+        if (f == nullptr) {
             // Try with the OES postfix
             ssize_t index = ssize_t(strlen(name)) - 3;
             if (index>0 && strcmp(name+index, "OES")) {
@@ -295,7 +307,7 @@
                 //ALOGD_IF(f, "found <%s> instead", scrap);
             }
         }
-        if (f == NULL) {
+        if (f == nullptr) {
             //ALOGD("%s", name);
             f = (__eglMustCastToProperFunctionPointerType)gl_unimplemented;
 
@@ -406,9 +418,9 @@
             }
 
             DIR* d = opendir(search);
-            if (d != NULL) {
+            if (d != nullptr) {
                 struct dirent* e;
-                while ((e = readdir(d)) != NULL) {
+                while ((e = readdir(d)) != nullptr) {
                     if (e->d_type == DT_DIR) {
                         continue;
                     }
@@ -434,7 +446,7 @@
     std::string absolutePath = MatchFile::find(kind);
     if (absolutePath.empty()) {
         // this happens often, we don't want to log an error
-        return 0;
+        return nullptr;
     }
     const char* const driver_absolute_path = absolutePath.c_str();
 
@@ -444,10 +456,10 @@
     // sphal namespace.
     void* dso = do_android_load_sphal_library(driver_absolute_path,
                                               RTLD_NOW | RTLD_LOCAL);
-    if (dso == 0) {
+    if (dso == nullptr) {
         const char* err = dlerror();
         ALOGE("load_driver(%s): %s", driver_absolute_path, err ? err : "unknown");
-        return 0;
+        return nullptr;
     }
 
     ALOGD("loaded %s", driver_absolute_path);
@@ -455,6 +467,114 @@
     return dso;
 }
 
+static void* load_angle_from_namespace(const char* kind, android_namespace_t* ns) {
+    const android_dlextinfo dlextinfo = {
+            .flags = ANDROID_DLEXT_USE_NAMESPACE,
+            .library_namespace = ns,
+    };
+
+    std::string name = std::string("lib") + kind + "_angle.so";
+
+    void* so = do_android_dlopen_ext(name.c_str(), RTLD_LOCAL | RTLD_NOW, &dlextinfo);
+
+    if (so) {
+        ALOGD("dlopen_ext from APK (%s) success at %p", name.c_str(), so);
+        return so;
+    } else {
+        ALOGE("dlopen_ext(\"%s\") failed: %s", name.c_str(), dlerror());
+    }
+
+    return nullptr;
+}
+
+static ANGLEPreference getAnglePref(const char* app_pref) {
+    if (app_pref == nullptr)
+        return ANGLE_NO_PREFERENCE;
+
+    if (strcmp(app_pref, "angle") == 0) {
+        return ANGLE_PREFER_ANGLE;
+    } else if (strcmp(app_pref, "native") == 0) {
+        return ANGLE_PREFER_NATIVE;
+    }
+    return ANGLE_NO_PREFERENCE;
+}
+
+static void* load_angle(const char* kind, egl_connection_t* cnx) {
+    // Only attempt to load ANGLE libs
+    if (strcmp(kind, "EGL") != 0 && strcmp(kind, "GLESv2") != 0 && strcmp(kind, "GLESv1_CM") != 0)
+        return nullptr;
+
+    void* so = nullptr;
+    std::string name;
+    char prop[PROPERTY_VALUE_MAX];
+
+    android_namespace_t* ns = android_getAngleNamespace();
+    const char* app_name = android_getAngleAppName();
+    const char* app_pref = android_getAngleAppPref();
+    bool developer_opt_in = android_getAngleDeveloperOptIn();
+
+    // Determine whether or not to use ANGLE:
+    ANGLEPreference developer_option = developer_opt_in ? ANGLE_PREFER_ANGLE : ANGLE_NO_PREFERENCE;
+    bool use_angle = (developer_option == ANGLE_PREFER_ANGLE);
+
+    if (use_angle) {
+        ALOGV("User set \"Developer Options\" to force the use of ANGLE");
+    } else {
+        // The "Developer Options" value wasn't set to force the use of ANGLE.  Need to temporarily
+        // load ANGLE and call the updatable opt-in/out logic:
+        std::string app_name_str = app_name ? app_name : "";
+        char manufacturer[PROPERTY_VALUE_MAX];
+        char model[PROPERTY_VALUE_MAX];
+        property_get("ro.product.manufacturer", manufacturer, "UNSET");
+        property_get("ro.product.model", model, "UNSET");
+        ANGLEPreference app_preference = getAnglePref(android_getAngleAppPref());
+
+        so = load_angle_from_namespace("GLESv2", ns);
+        if (so) {
+            ALOGV("Temporarily loaded ANGLE's opt-in/out logic from namespace");
+            fpANGLEUseForApplication fp =
+                    (fpANGLEUseForApplication)dlsym(so, "ANGLEUseForApplication");
+            if (fp) {
+                use_angle = (fp)(app_name_str.c_str(), manufacturer, model, developer_option,
+                                 app_preference);
+                ALOGV("Result of opt-in/out logic is %s", use_angle ? "true" : "false");
+            }
+
+            ALOGV("Close temporarily-loaded ANGLE opt-in/out logic");
+            dlclose(so);
+            so = nullptr;
+        } else {
+            // We weren't able to load and call the updateable opt-in/out logic.
+            // If we can't load the library, there is no ANGLE available.
+            use_angle = false;
+            ALOGV("Could not temporarily-load the ANGLE opt-in/out logic, cannot use ANGLE.");
+        }
+    }
+    if (use_angle) {
+        so = load_angle_from_namespace(kind, ns);
+    }
+
+    if (so) {
+        ALOGV("Loaded ANGLE %s library for %s (instead of native)",
+              kind, app_name ? app_name : "nullptr");
+        property_get("debug.angle.backend", prop, "UNSET");
+        ALOGV("ANGLE's backend set to %s", prop);
+        property_get("debug.hwui.renderer", prop, "UNSET");
+        ALOGV("Skia's renderer set to %s", prop);
+        cnx->useAngle = true;
+        // Find and load vendor libEGL for ANGLE
+        if (!cnx->vendorEGL) {
+            cnx->vendorEGL = load_system_driver("EGL");
+        }
+        return so;
+    } else {
+        ALOGV("Loaded native %s library for %s (instead of ANGLE)",
+              kind, app_name ? app_name : "nullptr");
+    }
+
+    return nullptr;
+}
+
 static const char* HAL_SUBNAME_KEY_PROPERTIES[2] = {
     "ro.hardware.egl",
     "ro.board.platform",
@@ -486,16 +606,19 @@
     ATRACE_CALL();
 
     void* dso = nullptr;
+    dso = load_angle(kind, cnx);
 #ifndef __ANDROID_VNDK__
-    android_namespace_t* ns = android_getDriverNamespace();
-    if (ns) {
-        dso = load_updated_driver(kind, ns);
+    if (!dso) {
+        android_namespace_t* ns = android_getDriverNamespace();
+        if (ns) {
+            dso = load_updated_driver(kind, ns);
+        }
     }
 #endif
     if (!dso) {
         dso = load_system_driver(kind);
         if (!dso)
-            return NULL;
+            return nullptr;
     }
 
     if (mask & EGL) {
@@ -512,11 +635,11 @@
             char const * name = *api;
             __eglMustCastToProperFunctionPointerType f =
                 (__eglMustCastToProperFunctionPointerType)dlsym(dso, name);
-            if (f == NULL) {
+            if (f == nullptr) {
                 // couldn't find the entry-point, use eglGetProcAddress()
                 f = getProcAddress(name);
-                if (f == NULL) {
-                    f = (__eglMustCastToProperFunctionPointerType)0;
+                if (f == nullptr) {
+                    f = (__eglMustCastToProperFunctionPointerType)nullptr;
                 }
             }
             *curr++ = f;
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index f53cf3f..e292b80 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -89,22 +89,22 @@
 egl_display_ptr validate_display(EGLDisplay dpy) {
     egl_display_ptr dp = get_display(dpy);
     if (!dp)
-        return setError(EGL_BAD_DISPLAY, egl_display_ptr(NULL));
+        return setError(EGL_BAD_DISPLAY, egl_display_ptr(nullptr));
     if (!dp->isReady())
-        return setError(EGL_NOT_INITIALIZED, egl_display_ptr(NULL));
+        return setError(EGL_NOT_INITIALIZED, egl_display_ptr(nullptr));
 
     return dp;
 }
 
 egl_display_ptr validate_display_connection(EGLDisplay dpy,
         egl_connection_t*& cnx) {
-    cnx = NULL;
+    cnx = nullptr;
     egl_display_ptr dp = validate_display(dpy);
     if (!dp)
         return dp;
     cnx = &gEGLImpl;
-    if (cnx->dso == 0) {
-        return setError(EGL_BAD_CONFIG, egl_display_ptr(NULL));
+    if (cnx->dso == nullptr) {
+        return setError(EGL_BAD_CONFIG, egl_display_ptr(nullptr));
     }
     return dp;
 }
@@ -117,14 +117,14 @@
 
     EGLContext context = egl_tls_t::getContext();
     if (context == EGL_NO_CONTEXT)
-        return NULL;
+        return nullptr;
 
     egl_context_t const * const c = get_context(context);
-    if (c == NULL) // this should never happen, by construction
-        return NULL;
+    if (c == nullptr) // this should never happen, by construction
+        return nullptr;
 
     if (name != GL_EXTENSIONS)
-        return NULL;
+        return nullptr;
 
     return (const GLubyte *)c->gl_extensions.c_str();
 }
@@ -135,19 +135,19 @@
 
     EGLContext context = egl_tls_t::getContext();
     if (context == EGL_NO_CONTEXT)
-        return NULL;
+        return nullptr;
 
     egl_context_t const * const c = get_context(context);
-    if (c == NULL) // this should never happen, by construction
-        return NULL;
+    if (c == nullptr) // this should never happen, by construction
+        return nullptr;
 
     if (name != GL_EXTENSIONS)
-        return NULL;
+        return nullptr;
 
     // if index is out of bounds, assume it will be in the default
     // implementation too, so we don't have to generate a GL error here
     if (index >= c->tokenized_gl_extensions.size())
-        return NULL;
+        return nullptr;
 
     return (const GLubyte *)c->tokenized_gl_extensions[index].c_str();
 }
@@ -161,7 +161,7 @@
         return -1;
 
     egl_context_t const * const c = get_context(context);
-    if (c == NULL) // this should never happen, by construction
+    if (c == nullptr) // this should never happen, by construction
         return -1;
 
     return (GLint)c->tokenized_gl_extensions.size();
@@ -184,7 +184,7 @@
 
     // dynamically load our EGL implementation
     egl_connection_t* cnx = &gEGLImpl;
-    if (cnx->dso == 0) {
+    if (cnx->dso == nullptr) {
         cnx->hooks[egl_connection_t::GLESv1_INDEX] =
                 &gHooks[egl_connection_t::GLESv1_INDEX];
         cnx->hooks[egl_connection_t::GLESv2_INDEX] =
@@ -249,12 +249,12 @@
 
 char const * const gl_names[] = {
     #include "../entries.in"
-    NULL
+    nullptr
 };
 
 char const * const egl_names[] = {
     #include "egl_entries.in"
-    NULL
+    nullptr
 };
 
 #undef GL_ENTRY
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index 42049a4..d2dc514 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -25,6 +25,7 @@
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
+#include <EGL/eglext_angle.h>
 
 #include <android/hardware_buffer.h>
 #include <private/android/AHardwareBufferHelpers.h>
@@ -136,7 +137,6 @@
 //      "EGL_IMG_hibernate_process "            // optional
 //      "EGL_ANDROID_native_fence_sync "        // strongly recommended
 //      "EGL_ANDROID_framebuffer_target "       // mandatory for HWC 1.1
-//      "EGL_ANDROID_image_crop "               // optional
 
 /*
  * EGL Extensions entry-points exposed to 3rd party applications
@@ -258,7 +258,7 @@
             return map[i].address;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 // ----------------------------------------------------------------------------
@@ -341,7 +341,7 @@
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) return EGL_FALSE;
 
-    if (num_config==0) {
+    if (num_config==nullptr) {
         return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
@@ -366,7 +366,7 @@
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) return EGL_FALSE;
 
-    if (num_config==0) {
+    if (num_config==nullptr) {
         return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
@@ -385,8 +385,8 @@
 
                 // Only enable MSAA if the context is OpenGL ES 2.0 and
                 // if no caveat is requested
-                const EGLint *attribRendererable = NULL;
-                const EGLint *attribCaveat = NULL;
+                const EGLint *attribRendererable = nullptr;
+                const EGLint *attribCaveat = nullptr;
 
                 // Count the number of attributes and look for
                 // EGL_RENDERABLE_TYPE and EGL_CONFIG_CAVEAT
@@ -441,7 +441,7 @@
 {
     clearError();
 
-    egl_connection_t* cnx = NULL;
+    egl_connection_t* cnx = nullptr;
     const egl_display_ptr dp = validate_display_connection(dpy, cnx);
     if (!dp) return EGL_FALSE;
 
@@ -562,6 +562,15 @@
                     break;
                 }
             }
+
+            // If the driver doesn't understand it, we should map sRGB-encoded P3 to
+            // sRGB rather than just dropping the colorspace on the floor.
+            // For this format, the driver is expected to apply the sRGB
+            // transfer function during framebuffer operations.
+            if (!copyAttribute && attr[1] == EGL_GL_COLORSPACE_DISPLAY_P3_EXT) {
+                strippedAttribList->push_back(attr[0]);
+                strippedAttribList->push_back(EGL_GL_COLORSPACE_SRGB_KHR);
+            }
         }
         if (copyAttribute) {
             strippedAttribList->push_back(attr[0]);
@@ -699,7 +708,7 @@
     const EGLint *origAttribList = attrib_list;
     clearError();
 
-    egl_connection_t* cnx = NULL;
+    egl_connection_t* cnx = nullptr;
     egl_display_ptr dp = validate_display_connection(dpy, cnx);
     if (dp) {
         if (!window) {
@@ -712,12 +721,16 @@
             return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
         }
 
-        int result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL);
-        if (result < 0) {
-            ALOGE("eglCreateWindowSurface: native_window_api_connect (win=%p) "
-                    "failed (%#x) (already connected to another API?)",
-                    window, result);
-            return setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+        // NOTE: When using Vulkan backend, the Vulkan runtime makes all the
+        // native_window_* calls, so don't do them here.
+        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+            int result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL);
+            if (result < 0) {
+                ALOGE("eglCreateWindowSurface: native_window_api_connect (win=%p) "
+                      "failed (%#x) (already connected to another API?)",
+                      window, result);
+                return setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
+            }
         }
 
         EGLDisplay iDpy = dp->disp.dpy;
@@ -734,7 +747,7 @@
         }
         attrib_list = strippedAttribList.data();
 
-        {
+        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
             int err = native_window_set_buffers_format(window, format);
             if (err != 0) {
                 ALOGE("error setting native window pixel format: %s (%d)",
@@ -742,16 +755,16 @@
                 native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
                 return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
             }
-        }
 
-        android_dataspace dataSpace = dataSpaceFromEGLColorSpace(colorSpace);
-        if (dataSpace != HAL_DATASPACE_UNKNOWN) {
-            int err = native_window_set_buffers_data_space(window, dataSpace);
-            if (err != 0) {
-                ALOGE("error setting native window pixel dataSpace: %s (%d)",
-                      strerror(-err), err);
-                native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
-                return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+            android_dataspace dataSpace = dataSpaceFromEGLColorSpace(colorSpace);
+            if (dataSpace != HAL_DATASPACE_UNKNOWN) {
+                err = native_window_set_buffers_data_space(window, dataSpace);
+                if (err != 0) {
+                    ALOGE("error setting native window pixel dataSpace: %s (%d)", strerror(-err),
+                          err);
+                    native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+                    return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+                }
             }
         }
 
@@ -770,8 +783,10 @@
         }
 
         // EGLSurface creation failed
-        native_window_set_buffers_format(window, 0);
-        native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+        if (cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+            native_window_set_buffers_format(window, 0);
+            native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+        }
     }
     return EGL_NO_SURFACE;
 }
@@ -782,7 +797,7 @@
 {
     clearError();
 
-    egl_connection_t* cnx = NULL;
+    egl_connection_t* cnx = nullptr;
     egl_display_ptr dp = validate_display_connection(dpy, cnx);
     if (dp) {
         EGLDisplay iDpy = dp->disp.dpy;
@@ -803,7 +818,7 @@
                 dp->disp.dpy, config, pixmap, attrib_list);
         if (surface != EGL_NO_SURFACE) {
             egl_surface_t* s =
-                    new egl_surface_t(dp.get(), config, NULL, surface,
+                    new egl_surface_t(dp.get(), config, nullptr, surface,
                                       getReportedColorSpace(colorSpace), cnx);
             return s;
         }
@@ -816,7 +831,7 @@
 {
     clearError();
 
-    egl_connection_t* cnx = NULL;
+    egl_connection_t* cnx = nullptr;
     egl_display_ptr dp = validate_display_connection(dpy, cnx);
     if (dp) {
         EGLDisplay iDpy = dp->disp.dpy;
@@ -837,7 +852,7 @@
                 dp->disp.dpy, config, attrib_list);
         if (surface != EGL_NO_SURFACE) {
             egl_surface_t* s =
-                    new egl_surface_t(dp.get(), config, NULL, surface,
+                    new egl_surface_t(dp.get(), config, nullptr, surface,
                                       getReportedColorSpace(colorSpace), cnx);
             return s;
         }
@@ -911,7 +926,7 @@
 {
     clearError();
 
-    egl_connection_t* cnx = NULL;
+    egl_connection_t* cnx = nullptr;
     const egl_display_ptr dp = validate_display_connection(dpy, cnx);
     if (dp) {
         if (share_list != EGL_NO_CONTEXT) {
@@ -1000,9 +1015,9 @@
     EGLSurface impl_read = EGL_NO_SURFACE;
 
     // these are our objects structs passed in
-    egl_context_t       * c = NULL;
-    egl_surface_t const * d = NULL;
-    egl_surface_t const * r = NULL;
+    egl_context_t       * c = nullptr;
+    egl_surface_t const * d = nullptr;
+    egl_surface_t const * r = nullptr;
 
     // these are the current objects structs
     egl_context_t * cur_c = get_context(getContext());
@@ -1016,7 +1031,7 @@
             // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
             return setError(EGL_BAD_MATCH, (EGLBoolean)EGL_FALSE);
         }
-        if (cur_c == NULL) {
+        if (cur_c == nullptr) {
             // no current context
             // not an error, there is just no current context.
             return EGL_TRUE;
@@ -1164,7 +1179,7 @@
 static __eglMustCastToProperFunctionPointerType findBuiltinWrapper(
         const char* procname) {
     const egl_connection_t* cnx = &gEGLImpl;
-    void* proc = NULL;
+    void* proc = nullptr;
 
     proc = dlsym(cnx->libEgl, procname);
     if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
@@ -1175,7 +1190,7 @@
     proc = dlsym(cnx->libGles1, procname);
     if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
 
-    return NULL;
+    return nullptr;
 }
 
 __eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
@@ -1188,11 +1203,11 @@
 
     if (egl_init_drivers() == EGL_FALSE) {
         setError(EGL_BAD_PARAMETER, NULL);
-        return  NULL;
+        return  nullptr;
     }
 
     if (FILTER_EXTENSIONS(procname)) {
-        return NULL;
+        return nullptr;
     }
 
     __eglMustCastToProperFunctionPointerType addr;
@@ -1347,7 +1362,7 @@
     egl_surface_t* const s = get_surface(draw);
 
     if (CC_UNLIKELY(dp->traceGpuCompletion)) {
-        EGLSyncKHR sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, NULL);
+        EGLSyncKHR sync = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, nullptr);
         if (sync != EGL_NO_SYNC_KHR) {
             FrameCompletionThread::queueSync(sync);
         }
@@ -1363,9 +1378,11 @@
         }
     }
 
-    if (!sendSurfaceMetadata(s)) {
-        native_window_api_disconnect(s->getNativeWindow(), NATIVE_WINDOW_API_EGL);
-        return setError(EGL_BAD_NATIVE_WINDOW, (EGLBoolean)EGL_FALSE);
+    if (s->cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+        if (!sendSurfaceMetadata(s)) {
+            native_window_api_disconnect(s->getNativeWindow(), NATIVE_WINDOW_API_EGL);
+            return setError(EGL_BAD_NATIVE_WINDOW, (EGLBoolean)EGL_FALSE);
+        }
     }
 
     if (n_rects == 0) {
@@ -1386,7 +1403,10 @@
         androidRect.bottom = y;
         androidRects.push_back(androidRect);
     }
-    native_window_set_surface_damage(s->getNativeWindow(), androidRects.data(), androidRects.size());
+    if (s->cnx->angleBackend != EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE) {
+        native_window_set_surface_damage(s->getNativeWindow(), androidRects.data(),
+                                         androidRects.size());
+    }
 
     if (s->cnx->egl.eglSwapBuffersWithDamageKHR) {
         return s->cnx->egl.eglSwapBuffersWithDamageKHR(dp->disp.dpy, s->surface,
@@ -1398,7 +1418,7 @@
 
 EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
 {
-    return eglSwapBuffersWithDamageKHR(dpy, surface, NULL, 0);
+    return eglSwapBuffersWithDamageKHR(dpy, surface, nullptr, 0);
 }
 
 EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
@@ -1429,10 +1449,10 @@
     // If we want to support EGL_EXT_client_extensions later, we can return
     // the client extension string here instead.
     if (dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
-        return setErrorQuiet(EGL_BAD_DISPLAY, (const char*)0);
+        return setErrorQuiet(EGL_BAD_DISPLAY, (const char*)nullptr);
 
     const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return (const char *) NULL;
+    if (!dp) return (const char *) nullptr;
 
     switch (name) {
         case EGL_VENDOR:
@@ -1446,7 +1466,7 @@
         default:
             break;
     }
-    return setError(EGL_BAD_PARAMETER, (const char *)0);
+    return setError(EGL_BAD_PARAMETER, (const char *)nullptr);
 }
 
 extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name)
@@ -1454,7 +1474,7 @@
     clearError();
 
     const egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return (const char *) NULL;
+    if (!dp) return (const char *) nullptr;
 
     switch (name) {
         case EGL_VENDOR:
@@ -1468,7 +1488,7 @@
         default:
             break;
     }
-    return setError(EGL_BAD_PARAMETER, (const char *)0);
+    return setError(EGL_BAD_PARAMETER, (const char *)nullptr);
 }
 
 // ----------------------------------------------------------------------------
@@ -1650,7 +1670,7 @@
 {
     clearError();
 
-    egl_connection_t* cnx = NULL;
+    egl_connection_t* cnx = nullptr;
     const egl_display_ptr dp = validate_display_connection(dpy, cnx);
     if (!dp) return EGL_FALSE;
     if (cnx->egl.eglCreatePbufferFromClientBuffer) {
@@ -1713,31 +1733,13 @@
     ContextRef _c(dp.get(), ctx);
     egl_context_t * const c = _c.get();
 
-    // Temporary hack: eglImageCreateKHR should accept EGL_GL_COLORSPACE_LINEAR_KHR,
-    // EGL_GL_COLORSPACE_SRGB_KHR and EGL_GL_COLORSPACE_DEFAULT_EXT if
-    // EGL_EXT_image_gl_colorspace is supported, but some drivers don't like
-    // the DEFAULT value and generate an error.
-    std::vector<EGLint> strippedAttribList;
-    for (const EGLint *attr = attrib_list; attr && attr[0] != EGL_NONE; attr += 2) {
-        if (attr[0] == EGL_GL_COLORSPACE_KHR &&
-            dp->haveExtension("EGL_EXT_image_gl_colorspace")) {
-            if (attr[1] != EGL_GL_COLORSPACE_LINEAR_KHR &&
-                attr[1] != EGL_GL_COLORSPACE_SRGB_KHR) {
-                continue;
-            }
-        }
-        strippedAttribList.push_back(attr[0]);
-        strippedAttribList.push_back(attr[1]);
-    }
-    strippedAttribList.push_back(EGL_NONE);
-
     EGLImageKHR result = EGL_NO_IMAGE_KHR;
     egl_connection_t* const cnx = &gEGLImpl;
     if (cnx->dso && cnx->egl.eglCreateImageKHR) {
         result = cnx->egl.eglCreateImageKHR(
                 dp->disp.dpy,
                 c ? c->context : EGL_NO_CONTEXT,
-                target, buffer, strippedAttribList.data());
+                target, buffer, attrib_list);
     }
     return result;
 }
@@ -1954,7 +1956,7 @@
         EGLSurface surface = cnx->egl.eglCreateStreamProducerSurfaceKHR(
                 dp->disp.dpy, config, stream, attrib_list);
         if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s = new egl_surface_t(dp.get(), config, NULL, surface,
+            egl_surface_t* s = new egl_surface_t(dp.get(), config, nullptr, surface,
                                                  EGL_GL_COLORSPACE_LINEAR_KHR, cnx);
             return s;
         }
@@ -2110,10 +2112,10 @@
     // this function cannot be implemented when this libEGL is built for
     // vendors.
 #ifndef __ANDROID_VNDK__
-    if (!buffer) return setError(EGL_BAD_PARAMETER, (EGLClientBuffer)0);
+    if (!buffer) return setError(EGL_BAD_PARAMETER, (EGLClientBuffer) nullptr);
     return const_cast<ANativeWindowBuffer *>(AHardwareBuffer_to_ANativeWindowBuffer(buffer));
 #else
-    return setError(EGL_BAD_PARAMETER, (EGLClientBuffer)0);
+    return setError(EGL_BAD_PARAMETER, (EGLClientBuffer) nullptr);
 #endif
 }
 
diff --git a/opengl/libs/EGL/egl_angle_platform.cpp b/opengl/libs/EGL/egl_angle_platform.cpp
new file mode 100644
index 0000000..7e0175a
--- /dev/null
+++ b/opengl/libs/EGL/egl_angle_platform.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if defined(__ANDROID__)
+
+#include "egl_angle_platform.h"
+#include <time.h>
+
+#include <log/log.h>
+
+namespace angle {
+
+GetDisplayPlatformFunc AnglePlatformImpl::angleGetDisplayPlatform = nullptr;
+ResetDisplayPlatformFunc AnglePlatformImpl::angleResetDisplayPlatform = nullptr;
+// Initialize start time
+time_t AnglePlatformImpl::startTime = time(nullptr);
+
+void AnglePlatformImpl::assignAnglePlatformMethods(PlatformMethods* platformMethods) {
+    platformMethods->addTraceEvent = addTraceEvent;
+    platformMethods->getTraceCategoryEnabledFlag = getTraceCategoryEnabledFlag;
+    platformMethods->monotonicallyIncreasingTime = monotonicallyIncreasingTime;
+    platformMethods->logError = logError;
+    platformMethods->logWarning = logWarning;
+    platformMethods->logInfo = logInfo;
+}
+
+const unsigned char* AnglePlatformImpl::getTraceCategoryEnabledFlag(PlatformMethods* /*platform*/,
+                                                                    const char* /*categoryName*/) {
+    // Returning ptr to 'g' (non-zero) to ALWAYS enable tracing initially.
+    // This ptr is what will be passed into "category_group_enabled" of addTraceEvent
+    static const unsigned char traceEnabled = 'g';
+    return &traceEnabled;
+}
+
+double AnglePlatformImpl::monotonicallyIncreasingTime(PlatformMethods* /*platform*/) {
+    return difftime(time(nullptr), startTime);
+}
+
+void AnglePlatformImpl::logError(PlatformMethods* /*platform*/, const char* errorMessage) {
+    ALOGE("ANGLE Error:%s", errorMessage);
+}
+
+void AnglePlatformImpl::logWarning(PlatformMethods* /*platform*/, const char* warningMessage) {
+    ALOGW("ANGLE Warn:%s", warningMessage);
+}
+
+void AnglePlatformImpl::logInfo(PlatformMethods* /*platform*/, const char* infoMessage) {
+    ALOGD("ANGLE Info:%s", infoMessage);
+}
+
+TraceEventHandle AnglePlatformImpl::addTraceEvent(
+        PlatformMethods* /**platform*/, char phase, const unsigned char* /*category_group_enabled*/,
+        const char* name, unsigned long long /*id*/, double /*timestamp*/, int /*num_args*/,
+        const char** /*arg_names*/, const unsigned char* /*arg_types*/,
+        const unsigned long long* /*arg_values*/, unsigned char /*flags*/) {
+    switch (phase) {
+        case 'B': {
+            ATRACE_BEGIN(name);
+            break;
+        }
+        case 'E': {
+            ATRACE_END();
+            break;
+        }
+        case 'I': {
+            ATRACE_NAME(name);
+            break;
+        }
+        default:
+            // Could handle other event types here
+            break;
+    }
+    // Return any non-zero handle to avoid assert in ANGLE
+    TraceEventHandle result = 1.0;
+    return result;
+}
+
+}; // namespace angle
+
+#endif // __ANDROID__
diff --git a/opengl/libs/EGL/egl_angle_platform.h b/opengl/libs/EGL/egl_angle_platform.h
new file mode 100644
index 0000000..7c6c8ed
--- /dev/null
+++ b/opengl/libs/EGL/egl_angle_platform.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#if defined(__ANDROID__)
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#include <EGL/Platform.h>
+#pragma GCC diagnostic pop
+
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "egl_trace.h"
+
+namespace angle {
+
+class AnglePlatformImpl {
+public:
+    static void assignAnglePlatformMethods(PlatformMethods* platformMethods);
+    static GetDisplayPlatformFunc angleGetDisplayPlatform;
+    static ResetDisplayPlatformFunc angleResetDisplayPlatform;
+
+private:
+    static time_t startTime;
+    static const unsigned char* getTraceCategoryEnabledFlag(PlatformMethods* /*platform*/,
+                                                            const char* /*categoryName*/);
+    static double monotonicallyIncreasingTime(PlatformMethods* /*platform*/);
+    static void logError(PlatformMethods* /*platform*/, const char* errorMessage);
+    static void logWarning(PlatformMethods* /*platform*/, const char* warningMessage);
+    static void logInfo(PlatformMethods* /*platform*/, const char* infoMessage);
+    static TraceEventHandle addTraceEvent(PlatformMethods* /**platform*/, char phase,
+                                          const unsigned char* /*category_group_enabled*/,
+                                          const char* name, unsigned long long /*id*/,
+                                          double /*timestamp*/, int /*num_args*/,
+                                          const char** /*arg_names*/,
+                                          const unsigned char* /*arg_types*/,
+                                          const unsigned long long* /*arg_values*/,
+                                          unsigned char /*flags*/);
+};
+
+}; // namespace angle
+
+#endif // __ANDROID__
diff --git a/opengl/libs/EGL/egl_cache.cpp b/opengl/libs/EGL/egl_cache.cpp
index ec548f3..bcf4961 100644
--- a/opengl/libs/EGL/egl_cache.cpp
+++ b/opengl/libs/EGL/egl_cache.cpp
@@ -95,7 +95,7 @@
                     reinterpret_cast<PFNEGLSETBLOBCACHEFUNCSANDROIDPROC>(
                             cnx->egl.eglGetProcAddress(
                                     "eglSetBlobCacheFuncsANDROID"));
-            if (eglSetBlobCacheFuncsANDROID == NULL) {
+            if (eglSetBlobCacheFuncsANDROID == nullptr) {
                 ALOGE("EGL_ANDROID_blob_cache advertised, "
                         "but unable to get eglSetBlobCacheFuncsANDROID");
                 return;
@@ -119,7 +119,7 @@
     if (mBlobCache) {
         mBlobCache->writeToFile();
     }
-    mBlobCache = NULL;
+    mBlobCache = nullptr;
 }
 
 void egl_cache_t::setBlob(const void* key, EGLsizeiANDROID keySize,
diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp
index 2aec249..d452a6c 100644
--- a/opengl/libs/EGL/egl_display.cpp
+++ b/opengl/libs/EGL/egl_display.cpp
@@ -21,14 +21,19 @@
 
 #include "../egl_impl.h"
 
+#include <EGL/eglext_angle.h>
 #include <private/EGL/display.h>
 
+#include <cutils/properties.h>
+#include "Loader.h"
+#include "egl_angle_platform.h"
 #include "egl_cache.h"
 #include "egl_object.h"
 #include "egl_tls.h"
-#include "egl_trace.h"
-#include "Loader.h"
-#include <cutils/properties.h>
+
+#include <android/dlext.h>
+#include <dlfcn.h>
+#include <graphicsenv/GraphicsEnv.h>
 
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <configstore/Utils.h>
@@ -116,11 +121,155 @@
 
 EGLDisplay egl_display_t::getFromNativeDisplay(EGLNativeDisplayType disp) {
     if (uintptr_t(disp) >= NUM_DISPLAYS)
-        return NULL;
+        return nullptr;
 
     return sDisplay[uintptr_t(disp)].getDisplay(disp);
 }
 
+static void addAnglePlatformAttributes(egl_connection_t* const cnx, const EGLAttrib* attrib_list,
+                                       std::vector<EGLAttrib>& attrs) {
+    intptr_t vendorEGL = (intptr_t)cnx->vendorEGL;
+
+    EGLint angleBackendDefault = EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE;
+    if (attrib_list) {
+        while (*attrib_list != EGL_NONE) {
+            EGLAttrib attr = *attrib_list++;
+            EGLAttrib value = *attrib_list++;
+            if (attr == EGL_PLATFORM_ANGLE_TYPE_ANGLE) {
+                switch (value) {
+                    case EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE:
+                        angleBackendDefault = EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE;
+                        break;
+                    case EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE:
+                    case EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE:
+                        angleBackendDefault = value;
+                        break;
+                    default:
+                        ALOGW("Invalid EGL_PLATFORM_ANGLE_TYPE_ANGLE attribute: 0x%" PRIxPTR,
+                              value);
+                        break;
+                }
+            }
+        }
+    }
+
+    cnx->angleBackend = angleBackendDefault;
+
+    // Allow debug property to override application's
+    char prop[PROPERTY_VALUE_MAX];
+    property_get("debug.angle.backend", prop, "0");
+    switch (atoi(prop)) {
+        case 1:
+            ALOGV("addAnglePlatformAttributes: Requesting OpenGLES back-end");
+            cnx->angleBackend = EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE;
+            break;
+        case 2:
+            ALOGV("addAnglePlatformAttributes: Requesting Vulkan back-end");
+            cnx->angleBackend = EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE;
+            break;
+        default:
+            break;
+    }
+
+    attrs.reserve(4 * 2);
+
+    attrs.push_back(EGL_PLATFORM_ANGLE_TYPE_ANGLE);
+    attrs.push_back(cnx->angleBackend);
+
+    switch (cnx->angleBackend) {
+        case EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE:
+            ALOGV("%s: Requesting Vulkan ANGLE back-end", __FUNCTION__);
+            property_get("debug.angle.validation", prop, "0");
+            attrs.push_back(EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE);
+            attrs.push_back(atoi(prop));
+            break;
+        case EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE:
+            ALOGV("%s: Requesting Default ANGLE back-end", __FUNCTION__);
+            break;
+        case EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE:
+            ALOGV("%s: Requesting OpenGL ES ANGLE back-end", __FUNCTION__);
+            // NOTE: This is only valid if the backend is OpenGL
+            attrs.push_back(EGL_PLATFORM_ANGLE_EGL_HANDLE_ANGLE);
+            attrs.push_back(vendorEGL);
+            break;
+        default:
+            ALOGV("%s: Requesting Unknown (%d) ANGLE back-end", __FUNCTION__, cnx->angleBackend);
+            break;
+    }
+    attrs.push_back(EGL_PLATFORM_ANGLE_CONTEXT_VIRTUALIZATION_ANGLE);
+    attrs.push_back(EGL_FALSE);
+}
+
+// Initialize function ptrs for ANGLE PlatformMethods struct, used for systrace
+bool initializeAnglePlatform(EGLDisplay dpy) {
+    // Since we're inside libEGL, use dlsym to lookup fptr for ANGLEGetDisplayPlatform
+    android_namespace_t* ns = android_getAngleNamespace();
+    const android_dlextinfo dlextinfo = {
+            .flags = ANDROID_DLEXT_USE_NAMESPACE,
+            .library_namespace = ns,
+    };
+    void* so = android_dlopen_ext("libEGL_angle.so", RTLD_LOCAL | RTLD_NOW, &dlextinfo);
+    angle::AnglePlatformImpl::angleGetDisplayPlatform =
+            reinterpret_cast<angle::GetDisplayPlatformFunc>(dlsym(so, "ANGLEGetDisplayPlatform"));
+
+    if (!angle::AnglePlatformImpl::angleGetDisplayPlatform) {
+        ALOGE("dlsym lookup of ANGLEGetDisplayPlatform in libEGL_angle failed!");
+        return false;
+    }
+
+    angle::AnglePlatformImpl::angleResetDisplayPlatform =
+            reinterpret_cast<angle::ResetDisplayPlatformFunc>(
+                    eglGetProcAddress("ANGLEResetDisplayPlatform"));
+
+    angle::PlatformMethods* platformMethods = nullptr;
+    if (!((angle::AnglePlatformImpl::angleGetDisplayPlatform)(dpy, angle::g_PlatformMethodNames,
+                                                              angle::g_NumPlatformMethods, nullptr,
+                                                              &platformMethods))) {
+        ALOGE("ANGLEGetDisplayPlatform call failed!");
+        return false;
+    }
+    if (platformMethods) {
+        angle::AnglePlatformImpl::assignAnglePlatformMethods(platformMethods);
+    } else {
+        ALOGE("In initializeAnglePlatform() platformMethods struct ptr is NULL. Not assigning "
+              "tracing function ptrs!");
+    }
+    return true;
+}
+
+static EGLDisplay getDisplayAngle(EGLNativeDisplayType display, egl_connection_t* const cnx) {
+    EGLDisplay dpy = EGL_NO_DISPLAY;
+
+    // Locally define this until EGL 1.5 is supported
+    typedef EGLDisplay (*PFNEGLGETPLATFORMDISPLAYPROC)(EGLenum platform, void* native_display,
+                                                       const EGLAttrib* attrib_list);
+
+    PFNEGLGETPLATFORMDISPLAYPROC eglGetPlatformDisplay =
+            reinterpret_cast<PFNEGLGETPLATFORMDISPLAYPROC>(
+                    cnx->egl.eglGetProcAddress("eglGetPlatformDisplay"));
+
+    if (eglGetPlatformDisplay) {
+        std::vector<EGLAttrib> attrs;
+        addAnglePlatformAttributes(cnx, nullptr, attrs);
+        attrs.push_back(EGL_NONE);
+
+        dpy = eglGetPlatformDisplay(EGL_PLATFORM_ANGLE_ANGLE,
+                                    reinterpret_cast<void*>(EGL_DEFAULT_DISPLAY), attrs.data());
+        if (dpy == EGL_NO_DISPLAY) {
+            ALOGE("eglGetPlatformDisplay failed!");
+        } else {
+            if (!initializeAnglePlatform(dpy)) {
+                ALOGE("initializeAnglePlatform failed!");
+            }
+        }
+    } else {
+        ALOGE("eglGetDisplay(%p) failed: Unable to look up eglGetPlatformDisplay from ANGLE",
+              display);
+    }
+
+    return dpy;
+}
+
 EGLDisplay egl_display_t::getDisplay(EGLNativeDisplayType display) {
 
     std::lock_guard<std::mutex> _l(lock);
@@ -131,11 +280,19 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (cnx->dso && disp.dpy == EGL_NO_DISPLAY) {
-        EGLDisplay dpy = cnx->egl.eglGetDisplay(display);
+        EGLDisplay dpy = EGL_NO_DISPLAY;
+
+        if (cnx->useAngle) {
+            dpy = getDisplayAngle(display, cnx);
+        }
+        if (dpy == EGL_NO_DISPLAY) {
+            dpy = cnx->egl.eglGetDisplay(display);
+        }
+
         disp.dpy = dpy;
         if (dpy == EGL_NO_DISPLAY) {
             loader.close(cnx->dso);
-            cnx->dso = NULL;
+            cnx->dso = nullptr;
         }
     }
 
@@ -148,9 +305,9 @@
         std::unique_lock<std::mutex> _l(refLock);
         refs++;
         if (refs > 1) {
-            if (major != NULL)
+            if (major != nullptr)
                 *major = VERSION_MAJOR;
-            if (minor != NULL)
+            if (minor != nullptr)
                 *minor = VERSION_MINOR;
             while(!eglIsInitialized) {
                 refCond.wait(_l);
@@ -240,12 +397,6 @@
             if (len) {
                 // NOTE: we could avoid the copy if we had strnstr.
                 const std::string ext(start, len);
-                // Temporary hack: Adreno 530 driver exposes this extension under the draft
-                // KHR name, but during Khronos review it was decided to demote it to EXT.
-                if (ext == "EGL_EXT_image_gl_colorspace" &&
-                    findExtension(disp.queryString.extensions, "EGL_KHR_image_gl_colorspace")) {
-                    mExtensionString.append("EGL_EXT_image_gl_colorspace ");
-                }
                 if (findExtension(disp.queryString.extensions, ext.c_str(), len)) {
                     mExtensionString.append(ext + " ");
                 }
@@ -268,9 +419,9 @@
             traceGpuCompletion = true;
         }
 
-        if (major != NULL)
+        if (major != nullptr)
             *major = VERSION_MAJOR;
-        if (minor != NULL)
+        if (minor != nullptr)
             *minor = VERSION_MINOR;
     }
 
@@ -311,6 +462,10 @@
 
         egl_connection_t* const cnx = &gEGLImpl;
         if (cnx->dso && disp.state == egl_display_t::INITIALIZED) {
+            // If we're using ANGLE reset any custom DisplayPlatform
+            if (cnx->useAngle && angle::AnglePlatformImpl::angleResetDisplayPlatform) {
+                (angle::AnglePlatformImpl::angleResetDisplayPlatform)(disp.dpy);
+            }
             if (cnx->egl.eglTerminate(disp.dpy) == EGL_FALSE) {
                 ALOGW("eglTerminate(%p) failed (%s)", disp.dpy,
                         egl_tls_t::egl_strerror(cnx->egl.eglGetError()));
@@ -361,8 +516,8 @@
     // by construction, these are either 0 or valid (possibly terminated)
     // it should be impossible for these to be invalid
     ContextRef _cur_c(cur_c);
-    SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : NULL);
-    SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : NULL);
+    SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : nullptr);
+    SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : nullptr);
 
     { // scope for the lock
         std::lock_guard<std::mutex> _l(lock);
@@ -387,8 +542,8 @@
     // by construction, these are either 0 or valid (possibly terminated)
     // it should be impossible for these to be invalid
     ContextRef _cur_c(cur_c);
-    SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : NULL);
-    SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : NULL);
+    SurfaceRef _cur_r(cur_c ? get_surface(cur_c->read) : nullptr);
+    SurfaceRef _cur_d(cur_c ? get_surface(cur_c->draw) : nullptr);
 
     { // scope for the lock
         std::lock_guard<std::mutex> _l(lock);
diff --git a/opengl/libs/EGL/egl_display.h b/opengl/libs/EGL/egl_display.h
index 79a9f08..f764028 100644
--- a/opengl/libs/EGL/egl_display.h
+++ b/opengl/libs/EGL/egl_display.h
@@ -160,7 +160,7 @@
     const egl_display_t* get() const { return mDpy; }
           egl_display_t* get()       { return mDpy; }
 
-    operator bool() const { return mDpy != NULL; }
+    operator bool() const { return mDpy != nullptr; }
 
 private:
     egl_display_t* mDpy;
diff --git a/opengl/libs/EGL/egl_object.cpp b/opengl/libs/EGL/egl_object.cpp
index f879254..ff4fe2d 100644
--- a/opengl/libs/EGL/egl_object.cpp
+++ b/opengl/libs/EGL/egl_object.cpp
@@ -81,14 +81,14 @@
 }
 
 egl_surface_t::~egl_surface_t() {
-    if (win != NULL) {
+    if (win != nullptr) {
         disconnect();
         win->decStrong(this);
     }
 }
 
 void egl_surface_t::disconnect() {
-    if (win != NULL && connected) {
+    if (win != nullptr && connected) {
         native_window_set_buffers_format(win, 0);
         if (native_window_api_disconnect(win, NATIVE_WINDOW_API_EGL)) {
             ALOGW("EGLNativeWindowType %p disconnect failed", win);
@@ -281,12 +281,12 @@
 egl_context_t::egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
         egl_connection_t const* cnx, int version) :
     egl_object_t(get_display_nowake(dpy)), dpy(dpy), context(context),
-            config(config), read(0), draw(0), cnx(cnx), version(version) {
+            config(config), read(nullptr), draw(nullptr), cnx(cnx), version(version) {
 }
 
 void egl_context_t::onLooseCurrent() {
-    read = NULL;
-    draw = NULL;
+    read = nullptr;
+    draw = nullptr;
 }
 
 void egl_context_t::onMakeCurrent(EGLSurface draw, EGLSurface read) {
diff --git a/opengl/libs/EGL/egl_object.h b/opengl/libs/EGL/egl_object.h
index 4e1de5c..fb2bdf4 100644
--- a/opengl/libs/EGL/egl_object.h
+++ b/opengl/libs/EGL/egl_object.h
@@ -67,7 +67,7 @@
     public:
         ~LocalRef();
         explicit LocalRef(egl_object_t* rhs);
-        explicit LocalRef(egl_display_t const* display, T o) : ref(0) {
+        explicit LocalRef(egl_display_t const* display, T o) : ref(nullptr) {
             egl_object_t* native = reinterpret_cast<N*>(o);
             if (o && egl_object_t::get(display, native)) {
                 ref = native;
diff --git a/opengl/libs/EGL/egl_tls.cpp b/opengl/libs/EGL/egl_tls.cpp
index 8508c5f..b57c357 100644
--- a/opengl/libs/EGL/egl_tls.cpp
+++ b/opengl/libs/EGL/egl_tls.cpp
@@ -28,7 +28,7 @@
 pthread_once_t egl_tls_t::sOnceKey = PTHREAD_ONCE_INIT;
 
 egl_tls_t::egl_tls_t()
-    : error(EGL_SUCCESS), ctx(0), logCallWithNoContext(true) {
+    : error(EGL_SUCCESS), ctx(nullptr), logCallWithNoContext(true) {
 }
 
 const char *egl_tls_t::egl_strerror(EGLint err) {
@@ -55,13 +55,38 @@
 void egl_tls_t::validateTLSKey()
 {
     struct TlsKeyInitializer {
-        static void create() {
-            pthread_key_create(&sKey, (void (*)(void*))&eglReleaseThread);
-        }
+        static void create() { pthread_key_create(&sKey, destructTLSData); }
     };
     pthread_once(&sOnceKey, TlsKeyInitializer::create);
 }
 
+void egl_tls_t::destructTLSData(void* data) {
+    egl_tls_t* tls = static_cast<egl_tls_t*>(data);
+    if (!tls) return;
+
+    // Several things in the call tree of eglReleaseThread expect to be able to get the current
+    // thread state directly from TLS. That's a problem because Bionic has already cleared our
+    // TLS pointer before calling this function (pthread_getspecific(sKey) will return nullptr).
+    // Instead the data is passed as our parameter.
+    //
+    // Ideally we'd refactor this so we have thin wrappers that retrieve thread state from TLS and
+    // then pass it as a parameter (or 'this' pointer) to functions that do the real work without
+    // touching TLS. Then from here we could just call those implementation functions with the the
+    // TLS data we just received as a parameter.
+    //
+    // But that's a fairly invasive refactoring, so to do this robustly in the short term we just
+    // put the data *back* in TLS and call the top-level eglReleaseThread. It and it's call tree
+    // will retrieve the value from TLS, and then finally clear the TLS data. Bionic explicitly
+    // tolerates re-setting the value that it's currently trying to destruct (see
+    // pthread_key_clean_all()). Even if we forgot to clear the restored TLS data, bionic would
+    // call the destructor again, but eventually gives up and just leaks the data rather than
+    // enter an infinite loop.
+    pthread_setspecific(sKey, tls);
+    eglReleaseThread();
+    ALOGE_IF(pthread_getspecific(sKey) != nullptr,
+             "EGL TLS data still exists after eglReleaseThread");
+}
+
 void egl_tls_t::setErrorEtcImpl(
         const char* caller, int line, EGLint error, bool quiet) {
     validateTLSKey();
@@ -92,7 +117,7 @@
 
 egl_tls_t* egl_tls_t::getTLS() {
     egl_tls_t* tls = (egl_tls_t*)pthread_getspecific(sKey);
-    if (tls == 0) {
+    if (tls == nullptr) {
         tls = new egl_tls_t;
         pthread_setspecific(sKey, tls);
     }
@@ -103,7 +128,7 @@
     if (sKey != TLS_KEY_NOT_INITIALIZED) {
         egl_tls_t* tls = (egl_tls_t*)pthread_getspecific(sKey);
         if (tls) {
-            pthread_setspecific(sKey, 0);
+            pthread_setspecific(sKey, nullptr);
             delete tls;
         }
     }
diff --git a/opengl/libs/EGL/egl_tls.h b/opengl/libs/EGL/egl_tls.h
index 9feae68..86a375c 100644
--- a/opengl/libs/EGL/egl_tls.h
+++ b/opengl/libs/EGL/egl_tls.h
@@ -38,6 +38,7 @@
 
     egl_tls_t();
     static void validateTLSKey();
+    static void destructTLSData(void* data);
     static void setErrorEtcImpl(
             const char* caller, int line, EGLint error, bool quiet);
 
diff --git a/opengl/libs/EGL/egldefs.h b/opengl/libs/EGL/egldefs.h
index 9858276..4990af6 100644
--- a/opengl/libs/EGL/egldefs.h
+++ b/opengl/libs/EGL/egldefs.h
@@ -37,7 +37,7 @@
         GLESv2_INDEX = 1
     };
 
-    inline egl_connection_t() : dso(0) { }
+    inline egl_connection_t() : dso(nullptr) { }
     void *              dso;
     gl_hooks_t *        hooks[2];
     EGLint              major;
@@ -47,6 +47,10 @@
     void*               libEgl;
     void*               libGles1;
     void*               libGles2;
+
+    bool                useAngle;
+    EGLint              angleBackend;
+    void*               vendorEGL;
 };
 
 // ----------------------------------------------------------------------------
diff --git a/opengl/libs/tools/genfiles b/opengl/libs/tools/genfiles
deleted file mode 100755
index feef318..0000000
--- a/opengl/libs/tools/genfiles
+++ /dev/null
@@ -1,50 +0,0 @@
-#! /bin/sh
-#
-# Copyright (C) 2008 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Force a specific locale for sorting to avoid irrelevant differences
-# in the generated files that could hide real differences.
-export LC_ALL=POSIX
-
-./glapigen ../../include/GLES/gl.h      > ../GLES_CM/gl_api.in
-./glapigen ../../include/GLES/glext.h   > ../GLES_CM/glext_api.in
-./glapigen ../../include/GLES3/gl3.h    > ../GLES2/gl2_api.in
-./glapigen ../../include/GLES2/gl2ext.h > ../GLES2/gl2ext_api.in
-
-./glentrygen ../../include/GLES/gl.h      > /tmp/gl_entries.in
-./glentrygen ../../include/GLES/glext.h   > /tmp/glext_entries.in
-./glentrygen ../../include/GLES3/gl3.h    > /tmp/gl2_entries.in
-./glentrygen ../../include/GLES2/gl2ext.h > /tmp/gl2ext_entries.in
-
-# The awk command removes lines with the same function name as an earlier
-# line, even if the rest of the line differs. Although signatures of
-# functions with the same name should be the same, the different versions
-# have some irrelevant whitespace and parameter name differences.
-cat /tmp/gl_entries.in \
-    /tmp/glext_entries.in \
-    /tmp/gl2_entries.in \
-    /tmp/gl2ext_entries.in \
-        | sort -t, -k2 \
-        | awk -F, '!_[$2]++' \
-            > ../entries.in
-
-cat ../../include/GLES/gl.h \
-    ../../include/GLES/glext.h \
-    ../../include/GLES2/gl2ext.h \
-    ../../include/GLES3/gl3.h \
-        | ./glenumsgen \
-        | sort \
-        > ../enums.in
-
diff --git a/opengl/libs/tools/glapigen b/opengl/libs/tools/glapigen
deleted file mode 100755
index 4d8334f..0000000
--- a/opengl/libs/tools/glapigen
+++ /dev/null
@@ -1,76 +0,0 @@
-#! /usr/bin/perl
-#
-# Copyright (C) 2008 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-use strict;
-
-sub rtrim($)
-{
-    my $string = shift;
-    $string =~ s/\s+$//;
-    return $string;
-}
-
-while (my $line = <>) {
-  next if $line =~ /^\//;
-  next if $line =~ /^#/;
-  next if $line =~ /^\s*$/;
-  if ($line !~ /^GL_API(CALL)?\s+(.+)\s+GL_APIENTRY\s+([\w]+)\s*\(([^\)]+)\);/) {
-    next;
-  }
-  my $type = rtrim($2);
-  my $name = $3;
-  my $args = $4;
-
-  #printf("%s", $line);
-  
-  my $prefix = "";
-  if ($name eq "glGetString") {
-    $prefix = "__";
-  }
-  
-  printf("%s API_ENTRY(%s%s)(%s)", $type, $prefix, $name, $args);
-  
-  printf(" {\n");
-  if ($type eq "void") {
-    printf("    CALL_GL_API(%s", $name);
-  } else {
-    printf("    CALL_GL_API_RETURN(%s", $name);
-  }
-  my @args = split ',', $args;
-  my $len = scalar(@args);
-  for (my $num = 0; $num < $len; $num++) {
-    if ($args[$num] ne "void") {
-      print ", ";
-      #
-      # extract the name from the parameter
-      # type name
-      # const type *name
-      # type *name
-      # type name[4]
-      #
-      if ($args[$num] =~ /(\S+\s)+\**\s*([\w]+)/) {
-        printf("%s", $2);
-      }
-    }
-  }
-  printf(");\n");
-  printf("}\n");
-}
-
-
-
-
-
diff --git a/opengl/libs/tools/glentrygen b/opengl/libs/tools/glentrygen
deleted file mode 100755
index 170f041..0000000
--- a/opengl/libs/tools/glentrygen
+++ /dev/null
@@ -1,38 +0,0 @@
-#! /usr/bin/perl
-#
-# Copyright (C) 2008 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-use strict;
-
-sub rtrim($)
-{
-    my $string = shift;
-    $string =~ s/\s+$//;
-    return $string;
-}
-
-while (my $line = <>) {
-  next if $line =~ /^\//;
-  next if $line =~ /^#/;
-  next if $line =~ /^\s*$/;
-  if ($line !~ /^GL_API(CALL)?\s+(.+)\s+GL_APIENTRY\s+([\w]+)\s*\(([^\)]+)\);/) {
-    next;
-  }
-  my $type = rtrim($2);
-  my $name = $3;
-  my $args = $4;
-
-  printf("GL_ENTRY(%s, %s, %s)\n", $type, $name, $args);
-}
diff --git a/opengl/libs/tools/glenumsgen b/opengl/libs/tools/glenumsgen
deleted file mode 100755
index 2ae5fbf..0000000
--- a/opengl/libs/tools/glenumsgen
+++ /dev/null
@@ -1,38 +0,0 @@
-#! /usr/bin/perl
-#
-# Copyright (C) 2010 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-use strict;
-
-my %enumHash = ();
-
-while (my $line = <STDIN>) {
-  next if $line =~ /^\//;
-  # Skip bitfield definitions.
-  next if $line =~ /_BIT(\d+_|\s+)/;
-  if ($line !~ /^#define\s+(\S+)\s+(0x\S+)/) {
-    next;
-  }
-  my $enumName = $1;
-  my $enumValue = $2;
-  next if exists($enumHash { $enumValue });
-  $enumHash { $enumValue } = $enumName;
-  printf("GL_ENUM(%s,%s)\n", $enumValue, $enumName);
-}
-
-
-
-
-
diff --git a/opengl/specs/README b/opengl/specs/README
index fdafb1b..6d597d5 100644
--- a/opengl/specs/README
+++ b/opengl/specs/README
@@ -19,10 +19,7 @@
 0x3145               EGL_SYNC_NATIVE_FENCE_FD_ANDROID (EGL_ANDROID_native_fence_sync)
 0x3146               EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID (EGL_ANDROID_native_fence_sync)
 0x3147               EGL_FRAMEBUFFER_TARGET_ANDROID (EGL_ANDROID_framebuffer_target)
-0x3148               EGL_IMAGE_CROP_LEFT_ANDROID (EGL_ANDROID_image_crop)
-0x3149               EGL_IMAGE_CROP_TOP_ANDROID (EGL_ANDROID_image_crop)
-0x314A               EGL_IMAGE_CROP_RIGHT_ANDROID (EGL_ANDROID_image_crop)
-0x314B               EGL_IMAGE_CROP_BOTTOM_ANDROID (EGL_ANDROID_image_crop)
+0x3148 - 0x314B      previously used by the undocumented, deprecated extension EGL_ANDROID_image_crop
 0x314C               EGL_FRONT_BUFFER_AUTO_REFRESH_ANDROID (EGL_ANDROID_front_buffer_auto_refresh)
 0x314D               EGL_GL_COLORSPACE_DEFAULT_EXT (EGL_EXT_image_gl_colorspace)
 0x314E - 0x314F      (unused)
diff --git a/opengl/tests/lib/WindowSurface.cpp b/opengl/tests/lib/WindowSurface.cpp
index 2b76279..b06422a 100644
--- a/opengl/tests/lib/WindowSurface.cpp
+++ b/opengl/tests/lib/WindowSurface.cpp
@@ -57,7 +57,7 @@
     sp<SurfaceControl> sc = surfaceComposerClient->createSurface(
             String8("Benchmark"), width, height,
             PIXEL_FORMAT_RGBX_8888, ISurfaceComposerClient::eOpaque);
-    if (sc == NULL || !sc->isValid()) {
+    if (sc == nullptr || !sc->isValid()) {
         fprintf(stderr, "Failed to create SurfaceControl\n");
         return;
     }
diff --git a/opengl/tests/lib/glTestLib.cpp b/opengl/tests/lib/glTestLib.cpp
index 213dffd..290d7a0 100644
--- a/opengl/tests/lib/glTestLib.cpp
+++ b/opengl/tests/lib/glTestLib.cpp
@@ -37,7 +37,7 @@
 {
     const char *v = (const char *) glGetString(s);
 
-    if (v == NULL) {
+    if (v == nullptr) {
         testPrintI("GL %s unknown", name);
     } else {
         testPrintI("GL %s = %s", name, v);
diff --git a/opengl/tests/lib/include/EGLUtils.h b/opengl/tests/lib/include/EGLUtils.h
index 9dc6bcf..eb9571d 100644
--- a/opengl/tests/lib/include/EGLUtils.h
+++ b/opengl/tests/lib/include/EGLUtils.h
@@ -100,11 +100,11 @@
     if (!attrs)
         return BAD_VALUE;
 
-    if (outConfig == NULL)
+    if (outConfig == nullptr)
         return BAD_VALUE;
 
     // Get all the "potential match" configs...
-    if (eglGetConfigs(dpy, NULL, 0, &numConfigs) == EGL_FALSE)
+    if (eglGetConfigs(dpy, nullptr, 0, &numConfigs) == EGL_FALSE)
         return BAD_VALUE;
 
     std::vector<EGLConfig> configs(numConfigs);
@@ -113,7 +113,7 @@
     }
 
     int i;
-    EGLConfig config = NULL;
+    EGLConfig config = nullptr;
     for (i=0 ; i<n ; i++) {
         EGLint nativeVisualId = 0;
         eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId);
@@ -243,7 +243,7 @@
 
 bool EGLUtils::printEGLConfigurations(EGLDisplay dpy, String8& msg) {
     EGLint numConfig = 0;
-    EGLint returnVal = eglGetConfigs(dpy, NULL, 0, &numConfig);
+    EGLint returnVal = eglGetConfigs(dpy, nullptr, 0, &numConfig);
     msg.append(checkEglError("eglGetConfigs", returnVal));
     if (!returnVal) {
         return false;
diff --git a/services/inputflinger/Android.bp b/services/inputflinger/Android.bp
index a9e5a43..9a65452 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -15,14 +15,14 @@
 cc_library_shared {
     name: "libinputflinger",
 
+    cpp_std: "c++17",
+
     srcs: [
         "EventHub.cpp",
-        "InputApplication.cpp",
         "InputDispatcher.cpp",
         "InputListener.cpp",
         "InputManager.cpp",
         "InputReader.cpp",
-        "InputWindow.cpp",
     ],
 
     shared_libs: [
diff --git a/services/inputflinger/EventHub.cpp b/services/inputflinger/EventHub.cpp
index 4d9a2a0..a964d29 100644
--- a/services/inputflinger/EventHub.cpp
+++ b/services/inputflinger/EventHub.cpp
@@ -76,16 +76,16 @@
     return value ? "true" : "false";
 }
 
-static String8 sha1(const String8& in) {
+static std::string sha1(const std::string& in) {
     SHA_CTX ctx;
     SHA1_Init(&ctx);
-    SHA1_Update(&ctx, reinterpret_cast<const u_char*>(in.string()), in.size());
+    SHA1_Update(&ctx, reinterpret_cast<const u_char*>(in.c_str()), in.size());
     u_char digest[SHA_DIGEST_LENGTH];
     SHA1_Final(digest, &ctx);
 
-    String8 out;
+    std::string out;
     for (size_t i = 0; i < SHA_DIGEST_LENGTH; i++) {
-        out.appendFormat("%02x", digest[i]);
+        out += StringPrintf("%02x", digest[i]);
     }
     return out;
 }
@@ -141,11 +141,11 @@
 
 // --- EventHub::Device ---
 
-EventHub::Device::Device(int fd, int32_t id, const String8& path,
+EventHub::Device::Device(int fd, int32_t id, const std::string& path,
         const InputDeviceIdentifier& identifier) :
-        next(NULL),
+        next(nullptr),
         fd(fd), id(id), path(path), identifier(identifier),
-        classes(0), configuration(NULL), virtualKeyMap(NULL),
+        classes(0), configuration(nullptr), virtualKeyMap(nullptr),
         ffEffectPlaying(false), ffEffectId(-1), controllerNumber(0),
         timestampOverrideSec(0), timestampOverrideUsec(0), enabled(true),
         isVirtual(fd < 0) {
@@ -172,9 +172,9 @@
 }
 
 status_t EventHub::Device::enable() {
-    fd = open(path, O_RDWR | O_CLOEXEC | O_NONBLOCK);
+    fd = open(path.c_str(), O_RDWR | O_CLOEXEC | O_NONBLOCK);
     if(fd < 0) {
-        ALOGE("could not open %s, %s\n", path.string(), strerror(errno));
+        ALOGE("could not open %s, %s\n", path.c_str(), strerror(errno));
         return -errno;
     }
     enabled = true;
@@ -200,7 +200,7 @@
 
 EventHub::EventHub(void) :
         mBuiltInKeyboardId(NO_BUILT_IN_KEYBOARD), mNextDeviceId(1), mControllerNumbers(),
-        mOpeningDevices(0), mClosingDevices(0),
+        mOpeningDevices(nullptr), mClosingDevices(nullptr),
         mNeedToSendFinishedDeviceScan(false),
         mNeedToReopenDevices(false), mNeedToScanDevices(true),
         mPendingEventCount(0), mPendingEventIndex(0), mPendingINotify(false) {
@@ -267,21 +267,21 @@
 InputDeviceIdentifier EventHub::getDeviceIdentifier(int32_t deviceId) const {
     AutoMutex _l(mLock);
     Device* device = getDeviceLocked(deviceId);
-    if (device == NULL) return InputDeviceIdentifier();
+    if (device == nullptr) return InputDeviceIdentifier();
     return device->identifier;
 }
 
 uint32_t EventHub::getDeviceClasses(int32_t deviceId) const {
     AutoMutex _l(mLock);
     Device* device = getDeviceLocked(deviceId);
-    if (device == NULL) return 0;
+    if (device == nullptr) return 0;
     return device->classes;
 }
 
 int32_t EventHub::getDeviceControllerNumber(int32_t deviceId) const {
     AutoMutex _l(mLock);
     Device* device = getDeviceLocked(deviceId);
-    if (device == NULL) return 0;
+    if (device == nullptr) return 0;
     return device->controllerNumber;
 }
 
@@ -307,7 +307,7 @@
             struct input_absinfo info;
             if(ioctl(device->fd, EVIOCGABS(axis), &info)) {
                 ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d",
-                     axis, device->identifier.name.string(), device->fd, errno);
+                     axis, device->identifier.name.c_str(), device->fd, errno);
                 return -errno;
             }
 
@@ -416,7 +416,7 @@
             struct input_absinfo info;
             if(ioctl(device->fd, EVIOCGABS(axis), &info)) {
                 ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d",
-                     axis, device->identifier.name.string(), device->fd, errno);
+                     axis, device->identifier.name.c_str(), device->fd, errno);
                 return -errno;
             }
 
@@ -465,7 +465,7 @@
     if (device) {
         // Check the key character map first.
         sp<KeyCharacterMap> kcm = device->getKeyCharacterMap();
-        if (kcm != NULL) {
+        if (kcm != nullptr) {
             if (!kcm->mapKey(scanCode, usageCode, outKeycode)) {
                 *outFlags = 0;
                 status = NO_ERROR;
@@ -481,7 +481,7 @@
         }
 
         if (status == NO_ERROR) {
-            if (kcm != NULL) {
+            if (kcm != nullptr) {
                 kcm->tryRemapKey(*outKeycode, metaState, outKeycode, outMetaState);
             } else {
                 *outMetaState = metaState;
@@ -512,7 +512,7 @@
     return NAME_NOT_FOUND;
 }
 
-void EventHub::setExcludedDevices(const Vector<String8>& devices) {
+void EventHub::setExcludedDevices(const std::vector<std::string>& devices) {
     AutoMutex _l(mLock);
 
     mExcludedDevices = devices;
@@ -581,7 +581,7 @@
     if (device) {
         return device->getKeyCharacterMap();
     }
-    return NULL;
+    return nullptr;
 }
 
 bool EventHub::setKeyboardLayoutOverlay(int32_t deviceId,
@@ -599,16 +599,16 @@
     return false;
 }
 
-static String8 generateDescriptor(InputDeviceIdentifier& identifier) {
-    String8 rawDescriptor;
-    rawDescriptor.appendFormat(":%04x:%04x:", identifier.vendor,
+static std::string generateDescriptor(InputDeviceIdentifier& identifier) {
+    std::string rawDescriptor;
+    rawDescriptor += StringPrintf(":%04x:%04x:", identifier.vendor,
             identifier.product);
     // TODO add handling for USB devices to not uniqueify kbs that show up twice
-    if (!identifier.uniqueId.isEmpty()) {
-        rawDescriptor.append("uniqueId:");
-        rawDescriptor.append(identifier.uniqueId);
+    if (!identifier.uniqueId.empty()) {
+        rawDescriptor += "uniqueId:";
+        rawDescriptor += identifier.uniqueId;
     } else if (identifier.nonce != 0) {
-        rawDescriptor.appendFormat("nonce:%04x", identifier.nonce);
+        rawDescriptor += StringPrintf("nonce:%04x", identifier.nonce);
     }
 
     if (identifier.vendor == 0 && identifier.product == 0) {
@@ -616,12 +616,12 @@
         // built-in so we need to rely on other information to uniquely identify
         // the input device.  Usually we try to avoid relying on the device name or
         // location but for built-in input device, they are unlikely to ever change.
-        if (!identifier.name.isEmpty()) {
-            rawDescriptor.append("name:");
-            rawDescriptor.append(identifier.name);
-        } else if (!identifier.location.isEmpty()) {
-            rawDescriptor.append("location:");
-            rawDescriptor.append(identifier.location);
+        if (!identifier.name.empty()) {
+            rawDescriptor += "name:";
+            rawDescriptor += identifier.name;
+        } else if (!identifier.location.empty()) {
+            rawDescriptor += "location:";
+            rawDescriptor += identifier.location;
         }
     }
     identifier.descriptor = sha1(rawDescriptor);
@@ -637,17 +637,17 @@
     // Ideally, we also want the descriptor to be short and relatively opaque.
 
     identifier.nonce = 0;
-    String8 rawDescriptor = generateDescriptor(identifier);
-    if (identifier.uniqueId.isEmpty()) {
+    std::string rawDescriptor = generateDescriptor(identifier);
+    if (identifier.uniqueId.empty()) {
         // If it didn't have a unique id check for conflicts and enforce
         // uniqueness if necessary.
-        while(getDeviceByDescriptorLocked(identifier.descriptor) != NULL) {
+        while(getDeviceByDescriptorLocked(identifier.descriptor) != nullptr) {
             identifier.nonce++;
             rawDescriptor = generateDescriptor(identifier);
         }
     }
-    ALOGV("Created descriptor: raw=%s, cooked=%s", rawDescriptor.string(),
-            identifier.descriptor.string());
+    ALOGV("Created descriptor: raw=%s, cooked=%s", rawDescriptor.c_str(),
+            identifier.descriptor.c_str());
 }
 
 void EventHub::vibrate(int32_t deviceId, nsecs_t duration) {
@@ -664,7 +664,7 @@
         effect.replay.delay = 0;
         if (ioctl(device->fd, EVIOCSFF, &effect)) {
             ALOGW("Could not upload force feedback effect to device %s due to error %d.",
-                    device->identifier.name.string(), errno);
+                    device->identifier.name.c_str(), errno);
             return;
         }
         device->ffEffectId = effect.id;
@@ -677,7 +677,7 @@
         ev.value = 1;
         if (write(device->fd, &ev, sizeof(ev)) != sizeof(ev)) {
             ALOGW("Could not start force feedback effect on device %s due to error %d.",
-                    device->identifier.name.string(), errno);
+                    device->identifier.name.c_str(), errno);
             return;
         }
         device->ffEffectPlaying = true;
@@ -699,22 +699,22 @@
             ev.value = 0;
             if (write(device->fd, &ev, sizeof(ev)) != sizeof(ev)) {
                 ALOGW("Could not stop force feedback effect on device %s due to error %d.",
-                        device->identifier.name.string(), errno);
+                        device->identifier.name.c_str(), errno);
                 return;
             }
         }
     }
 }
 
-EventHub::Device* EventHub::getDeviceByDescriptorLocked(String8& descriptor) const {
+EventHub::Device* EventHub::getDeviceByDescriptorLocked(const std::string& descriptor) const {
     size_t size = mDevices.size();
     for (size_t i = 0; i < size; i++) {
         Device* device = mDevices.valueAt(i);
-        if (descriptor.compare(device->identifier.descriptor) == 0) {
+        if (descriptor == device->identifier.descriptor) {
             return device;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 EventHub::Device* EventHub::getDeviceLocked(int32_t deviceId) const {
@@ -732,7 +732,7 @@
             return device;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 size_t EventHub::getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) {
@@ -763,7 +763,7 @@
         while (mClosingDevices) {
             Device* device = mClosingDevices;
             ALOGV("Reporting device closed: id=%d, name=%s\n",
-                 device->id, device->path.string());
+                 device->id, device->path.c_str());
             mClosingDevices = device->next;
             event->when = now;
             event->deviceId = device->id == mBuiltInKeyboardId ? BUILT_IN_KEYBOARD_ID : device->id;
@@ -782,10 +782,10 @@
             mNeedToSendFinishedDeviceScan = true;
         }
 
-        while (mOpeningDevices != NULL) {
+        while (mOpeningDevices != nullptr) {
             Device* device = mOpeningDevices;
             ALOGV("Reporting device opened: id=%d, name=%s\n",
-                 device->id, device->path.string());
+                 device->id, device->path.c_str());
             mOpeningDevices = device->next;
             event->when = now;
             event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id;
@@ -867,7 +867,7 @@
                     for (size_t i = 0; i < count; i++) {
                         struct input_event& iev = readBuffer[i];
                         ALOGV("%s got: time=%d.%06d, type=%d, code=%d, value=%d",
-                                device->path.string(),
+                                device->path.c_str(),
                                 (int) iev.time.tv_sec, (int) iev.time.tv_usec,
                                 iev.type, iev.code, iev.value);
 
@@ -936,7 +936,7 @@
                                         "event time %" PRId64 ", current time %" PRId64
                                         ", call time %" PRId64 ".  "
                                         "Using current time instead.",
-                                        device->path.string(), event->when, time, now);
+                                        device->path.c_str(), event->when, time, now);
                                 event->when = time;
                             } else {
                                 ALOGV("Event time is ok but failed the fast path and required "
@@ -962,12 +962,12 @@
                 }
             } else if (eventItem.events & EPOLLHUP) {
                 ALOGI("Removing device %s due to epoll hang-up event.",
-                        device->identifier.name.string());
+                        device->identifier.name.c_str());
                 deviceChanged = true;
                 closeDeviceLocked(device);
             } else {
                 ALOGW("Received unexpected epoll event 0x%08x for device %s.",
-                        eventItem.events, device->identifier.name.string());
+                        eventItem.events, device->identifier.name.c_str());
             }
         }
 
@@ -1099,7 +1099,7 @@
 
 status_t EventHub::unregisterDeviceFromEpollLocked(Device* device) {
     if (device->hasValidFd()) {
-        if (epoll_ctl(mEpollFd, EPOLL_CTL_DEL, device->fd, NULL)) {
+        if (epoll_ctl(mEpollFd, EPOLL_CTL_DEL, device->fd, nullptr)) {
             ALOGW("Could not remove device fd from epoll instance.  errno=%d", errno);
             return -errno;
         }
@@ -1125,14 +1125,14 @@
         //fprintf(stderr, "could not get device name for %s, %s\n", devicePath, strerror(errno));
     } else {
         buffer[sizeof(buffer) - 1] = '\0';
-        identifier.name.setTo(buffer);
+        identifier.name = buffer;
     }
 
     // Check to see if the device is on our excluded list
     for (size_t i = 0; i < mExcludedDevices.size(); i++) {
-        const String8& item = mExcludedDevices.itemAt(i);
+        const std::string& item = mExcludedDevices[i];
         if (identifier.name == item) {
-            ALOGI("ignoring event id %s driver %s\n", devicePath, item.string());
+            ALOGI("ignoring event id %s driver %s\n", devicePath, item.c_str());
             close(fd);
             return -1;
         }
@@ -1163,7 +1163,7 @@
         //fprintf(stderr, "could not get location for %s, %s\n", devicePath, strerror(errno));
     } else {
         buffer[sizeof(buffer) - 1] = '\0';
-        identifier.location.setTo(buffer);
+        identifier.location = buffer;
     }
 
     // Get device unique id.
@@ -1171,7 +1171,7 @@
         //fprintf(stderr, "could not get idstring for %s, %s\n", devicePath, strerror(errno));
     } else {
         buffer[sizeof(buffer) - 1] = '\0';
-        identifier.uniqueId.setTo(buffer);
+        identifier.uniqueId = buffer;
     }
 
     // Fill in the descriptor.
@@ -1179,7 +1179,7 @@
 
     // Allocate device.  (The device object takes ownership of the fd at this point.)
     int32_t deviceId = mNextDeviceId++;
-    Device* device = new Device(fd, deviceId, String8(devicePath), identifier);
+    Device* device = new Device(fd, deviceId, devicePath, identifier);
 
     ALOGV("add device %d: %s\n", deviceId, devicePath);
     ALOGV("  bus:        %04x\n"
@@ -1187,10 +1187,10 @@
          "  product     %04x\n"
          "  version     %04x\n",
         identifier.bus, identifier.vendor, identifier.product, identifier.version);
-    ALOGV("  name:       \"%s\"\n", identifier.name.string());
-    ALOGV("  location:   \"%s\"\n", identifier.location.string());
-    ALOGV("  unique id:  \"%s\"\n", identifier.uniqueId.string());
-    ALOGV("  descriptor: \"%s\"\n", identifier.descriptor.string());
+    ALOGV("  name:       \"%s\"\n", identifier.name.c_str());
+    ALOGV("  location:   \"%s\"\n", identifier.location.c_str());
+    ALOGV("  unique id:  \"%s\"\n", identifier.uniqueId.c_str());
+    ALOGV("  descriptor: \"%s\"\n", identifier.descriptor.c_str());
     ALOGV("  driver:     v%d.%d.%d\n",
         driverVersion >> 16, (driverVersion >> 8) & 0xff, driverVersion & 0xff);
 
@@ -1343,7 +1343,7 @@
     // If the device isn't recognized as something we handle, don't monitor it.
     if (device->classes == 0) {
         ALOGV("Dropping device: id=%d, path='%s', name='%s'",
-                deviceId, devicePath, device->identifier.name.string());
+                deviceId, devicePath, device->identifier.name.c_str());
         delete device;
         return -1;
     }
@@ -1374,11 +1374,11 @@
 
     ALOGI("New device: id=%d, fd=%d, path='%s', name='%s', classes=0x%x, "
             "configuration='%s', keyLayout='%s', keyCharacterMap='%s', builtinKeyboard=%s, ",
-         deviceId, fd, devicePath, device->identifier.name.string(),
+         deviceId, fd, devicePath, device->identifier.name.c_str(),
          device->classes,
-         device->configurationFile.string(),
-         device->keyMap.keyLayoutFile.string(),
-         device->keyMap.keyCharacterMapFile.string(),
+         device->configurationFile.c_str(),
+         device->keyMap.keyLayoutFile.c_str(),
+         device->keyMap.keyCharacterMapFile.c_str(),
          toString(mBuiltInKeyboardId == deviceId));
 
     addDeviceLocked(device);
@@ -1392,11 +1392,11 @@
         unsigned int repeatRate[] = {0, 0};
         if (ioctl(device->fd, EVIOCSREP, repeatRate)) {
             ALOGW("Unable to disable kernel key repeat for %s: %s",
-                  device->path.string(), strerror(errno));
+                  device->path.c_str(), strerror(errno));
         }
     }
 
-    String8 wakeMechanism("EPOLLWAKEUP");
+    std::string wakeMechanism = "EPOLLWAKEUP";
     if (!mUsingEpollWakeup) {
 #ifndef EVIOCSSUSPENDBLOCK
         // uapi headers don't include EVIOCSSUSPENDBLOCK, and future kernels
@@ -1416,14 +1416,14 @@
     // clock.
     int clockId = CLOCK_MONOTONIC;
     bool usingClockIoctl = !ioctl(device->fd, EVIOCSCLOCKID, &clockId);
-    ALOGI("wakeMechanism=%s, usingClockIoctl=%s", wakeMechanism.string(),
+    ALOGI("wakeMechanism=%s, usingClockIoctl=%s", wakeMechanism.c_str(),
           toString(usingClockIoctl));
 }
 
 bool EventHub::isDeviceEnabled(int32_t deviceId) {
     AutoMutex _l(mLock);
     Device* device = getDeviceLocked(deviceId);
-    if (device == NULL) {
+    if (device == nullptr) {
         ALOGE("Invalid device id=%" PRId32 " provided to %s", deviceId, __func__);
         return false;
     }
@@ -1433,7 +1433,7 @@
 status_t EventHub::enableDevice(int32_t deviceId) {
     AutoMutex _l(mLock);
     Device* device = getDeviceLocked(deviceId);
-    if (device == NULL) {
+    if (device == nullptr) {
         ALOGE("Invalid device id=%" PRId32 " provided to %s", deviceId, __func__);
         return BAD_VALUE;
     }
@@ -1455,7 +1455,7 @@
 status_t EventHub::disableDevice(int32_t deviceId) {
     AutoMutex _l(mLock);
     Device* device = getDeviceLocked(deviceId);
-    if (device == NULL) {
+    if (device == nullptr) {
         ALOGE("Invalid device id=%" PRId32 " provided to %s", deviceId, __func__);
         return BAD_VALUE;
     }
@@ -1473,7 +1473,7 @@
     identifier.uniqueId = "<virtual>";
     assignDescriptorLocked(identifier);
 
-    Device* device = new Device(-1, VIRTUAL_KEYBOARD_ID, String8("<virtual>"), identifier);
+    Device* device = new Device(-1, VIRTUAL_KEYBOARD_ID, "<virtual>", identifier);
     device->classes = INPUT_DEVICE_CLASS_KEYBOARD
             | INPUT_DEVICE_CLASS_ALPHAKEY
             | INPUT_DEVICE_CLASS_DPAD
@@ -1491,26 +1491,26 @@
 void EventHub::loadConfigurationLocked(Device* device) {
     device->configurationFile = getInputDeviceConfigurationFilePathByDeviceIdentifier(
             device->identifier, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_CONFIGURATION);
-    if (device->configurationFile.isEmpty()) {
+    if (device->configurationFile.empty()) {
         ALOGD("No input device configuration file found for device '%s'.",
-                device->identifier.name.string());
+                device->identifier.name.c_str());
     } else {
-        status_t status = PropertyMap::load(device->configurationFile,
+        status_t status = PropertyMap::load(String8(device->configurationFile.c_str()),
                 &device->configuration);
         if (status) {
             ALOGE("Error loading input device configuration file for device '%s'.  "
                     "Using default configuration.",
-                    device->identifier.name.string());
+                    device->identifier.name.c_str());
         }
     }
 }
 
 status_t EventHub::loadVirtualKeyMapLocked(Device* device) {
     // The virtual key map is supplied by the kernel as a system board property file.
-    String8 path;
-    path.append("/sys/board_properties/virtualkeys.");
-    path.append(device->identifier.name);
-    if (access(path.string(), R_OK)) {
+    std::string path;
+    path += "/sys/board_properties/virtualkeys.";
+    path += device->identifier.name;
+    if (access(path.c_str(), R_OK)) {
         return NAME_NOT_FOUND;
     }
     return VirtualKeyMap::load(path, &device->virtualKeyMap);
@@ -1543,7 +1543,7 @@
 int32_t EventHub::getNextControllerNumberLocked(Device* device) {
     if (mControllerNumbers.isFull()) {
         ALOGI("Maximum number of controllers reached, assigning controller number 0 to device %s",
-                device->identifier.name.string());
+                device->identifier.name.c_str());
         return 0;
     }
     // Since the controller number 0 is reserved for non-controllers, translate all numbers up by
@@ -1617,12 +1617,12 @@
 
 void EventHub::closeDeviceLocked(Device* device) {
     ALOGI("Removed device: path=%s name=%s id=%d fd=%d classes=0x%x\n",
-         device->path.string(), device->identifier.name.string(), device->id,
+         device->path.c_str(), device->identifier.name.c_str(), device->id,
          device->fd, device->classes);
 
     if (device->id == mBuiltInKeyboardId) {
         ALOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this",
-                device->path.string(), mBuiltInKeyboardId);
+                device->path.c_str(), mBuiltInKeyboardId);
         mBuiltInKeyboardId = NO_BUILT_IN_KEYBOARD;
     }
 
@@ -1634,9 +1634,9 @@
     device->close();
 
     // Unlink for opening devices list if it is present.
-    Device* pred = NULL;
+    Device* pred = nullptr;
     bool found = false;
-    for (Device* entry = mOpeningDevices; entry != NULL; ) {
+    for (Device* entry = mOpeningDevices; entry != nullptr; ) {
         if (entry == device) {
             found = true;
             break;
@@ -1648,7 +1648,7 @@
         // Unlink the device from the opening devices list then delete it.
         // We don't need to tell the client that the device was closed because
         // it does not even know it was opened in the first place.
-        ALOGI("Device %s was immediately closed after opening.", device->path.string());
+        ALOGI("Device %s was immediately closed after opening.", device->path.c_str());
         if (pred) {
             pred->next = device->next;
         } else {
@@ -1712,7 +1712,7 @@
     DIR *dir;
     struct dirent *de;
     dir = opendir(dirname);
-    if(dir == NULL)
+    if(dir == nullptr)
         return -1;
     strcpy(devname, dirname);
     filename = devname + strlen(devname);
@@ -1750,30 +1750,30 @@
             const Device* device = mDevices.valueAt(i);
             if (mBuiltInKeyboardId == device->id) {
                 dump += StringPrintf(INDENT2 "%d: %s (aka device 0 - built-in keyboard)\n",
-                        device->id, device->identifier.name.string());
+                        device->id, device->identifier.name.c_str());
             } else {
                 dump += StringPrintf(INDENT2 "%d: %s\n", device->id,
-                        device->identifier.name.string());
+                        device->identifier.name.c_str());
             }
             dump += StringPrintf(INDENT3 "Classes: 0x%08x\n", device->classes);
-            dump += StringPrintf(INDENT3 "Path: %s\n", device->path.string());
+            dump += StringPrintf(INDENT3 "Path: %s\n", device->path.c_str());
             dump += StringPrintf(INDENT3 "Enabled: %s\n", toString(device->enabled));
-            dump += StringPrintf(INDENT3 "Descriptor: %s\n", device->identifier.descriptor.string());
-            dump += StringPrintf(INDENT3 "Location: %s\n", device->identifier.location.string());
+            dump += StringPrintf(INDENT3 "Descriptor: %s\n", device->identifier.descriptor.c_str());
+            dump += StringPrintf(INDENT3 "Location: %s\n", device->identifier.location.c_str());
             dump += StringPrintf(INDENT3 "ControllerNumber: %d\n", device->controllerNumber);
-            dump += StringPrintf(INDENT3 "UniqueId: %s\n", device->identifier.uniqueId.string());
+            dump += StringPrintf(INDENT3 "UniqueId: %s\n", device->identifier.uniqueId.c_str());
             dump += StringPrintf(INDENT3 "Identifier: bus=0x%04x, vendor=0x%04x, "
                     "product=0x%04x, version=0x%04x\n",
                     device->identifier.bus, device->identifier.vendor,
                     device->identifier.product, device->identifier.version);
             dump += StringPrintf(INDENT3 "KeyLayoutFile: %s\n",
-                    device->keyMap.keyLayoutFile.string());
+                    device->keyMap.keyLayoutFile.c_str());
             dump += StringPrintf(INDENT3 "KeyCharacterMapFile: %s\n",
-                    device->keyMap.keyCharacterMapFile.string());
+                    device->keyMap.keyCharacterMapFile.c_str());
             dump += StringPrintf(INDENT3 "ConfigurationFile: %s\n",
-                    device->configurationFile.string());
+                    device->configurationFile.c_str());
             dump += StringPrintf(INDENT3 "HaveKeyboardLayoutOverlay: %s\n",
-                    toString(device->overlayKeyMap != NULL));
+                    toString(device->overlayKeyMap != nullptr));
         }
     } // release lock
 }
diff --git a/services/inputflinger/EventHub.h b/services/inputflinger/EventHub.h
index 66bc294..ea663b7 100644
--- a/services/inputflinger/EventHub.h
+++ b/services/inputflinger/EventHub.h
@@ -18,6 +18,8 @@
 #ifndef _RUNTIME_EVENT_HUB_H
 #define _RUNTIME_EVENT_HUB_H
 
+#include <vector>
+
 #include <input/Input.h>
 #include <input/InputDevice.h>
 #include <input/Keyboard.h>
@@ -29,7 +31,6 @@
 #include <utils/List.h>
 #include <utils/Errors.h>
 #include <utils/PropertyMap.h>
-#include <utils/Vector.h>
 #include <utils/KeyedVector.h>
 #include <utils/BitSet.h>
 
@@ -207,7 +208,7 @@
 
     // Sets devices that are excluded from opening.
     // This can be used to ignore input devices for sensors.
-    virtual void setExcludedDevices(const Vector<String8>& devices) = 0;
+    virtual void setExcludedDevices(const std::vector<std::string>& devices) = 0;
 
     /*
      * Wait for events to become available and returns them.
@@ -303,7 +304,7 @@
     virtual status_t mapAxis(int32_t deviceId, int32_t scanCode,
             AxisInfo* outAxisInfo) const;
 
-    virtual void setExcludedDevices(const Vector<String8>& devices);
+    virtual void setExcludedDevices(const std::vector<std::string>& devices);
 
     virtual int32_t getScanCodeState(int32_t deviceId, int32_t scanCode) const;
     virtual int32_t getKeyCodeState(int32_t deviceId, int32_t keyCode) const;
@@ -344,7 +345,7 @@
 
         int fd; // may be -1 if device is closed
         const int32_t id;
-        const String8 path;
+        const std::string path;
         const InputDeviceIdentifier identifier;
 
         uint32_t classes;
@@ -357,7 +358,7 @@
         uint8_t ffBitmask[(FF_MAX + 1) / 8];
         uint8_t propBitmask[(INPUT_PROP_MAX + 1) / 8];
 
-        String8 configurationFile;
+        std::string configurationFile;
         PropertyMap* configuration;
         VirtualKeyMap* virtualKeyMap;
         KeyMap keyMap;
@@ -373,7 +374,8 @@
         int32_t timestampOverrideSec;
         int32_t timestampOverrideUsec;
 
-        Device(int fd, int32_t id, const String8& path, const InputDeviceIdentifier& identifier);
+        Device(int fd, int32_t id, const std::string& path,
+                const InputDeviceIdentifier& identifier);
         ~Device();
 
         void close();
@@ -385,7 +387,7 @@
         const bool isVirtual; // set if fd < 0 is passed to constructor
 
         const sp<KeyCharacterMap>& getKeyCharacterMap() const {
-            if (combinedKeyMap != NULL) {
+            if (combinedKeyMap != nullptr) {
                 return combinedKeyMap;
             }
             return keyMap.keyCharacterMap;
@@ -413,7 +415,7 @@
     void scanDevicesLocked();
     status_t readNotifyLocked();
 
-    Device* getDeviceByDescriptorLocked(String8& descriptor) const;
+    Device* getDeviceByDescriptorLocked(const std::string& descriptor) const;
     Device* getDeviceLocked(int32_t deviceId) const;
     Device* getDeviceByPathLocked(const char* devicePath) const;
 
@@ -457,7 +459,7 @@
     bool mNeedToSendFinishedDeviceScan;
     bool mNeedToReopenDevices;
     bool mNeedToScanDevices;
-    Vector<String8> mExcludedDevices;
+    std::vector<std::string> mExcludedDevices;
 
     int mEpollFd;
     int mINotifyFd;
diff --git a/services/inputflinger/InputDispatcher.cpp b/services/inputflinger/InputDispatcher.cpp
index 9a449fa..38104c4 100644
--- a/services/inputflinger/InputDispatcher.cpp
+++ b/services/inputflinger/InputDispatcher.cpp
@@ -235,19 +235,26 @@
     }
 }
 
+template<typename T, typename U>
+static T getValueByKey(std::unordered_map<U, T>& map, U key) {
+    typename std::unordered_map<U, T>::const_iterator it = map.find(key);
+    return it != map.end() ? it->second : T{};
+}
+
 
 // --- InputDispatcher ---
 
 InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) :
     mPolicy(policy),
-    mPendingEvent(NULL), mLastDropReason(DROP_REASON_NOT_DROPPED),
+    mPendingEvent(nullptr), mLastDropReason(DROP_REASON_NOT_DROPPED),
     mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX),
-    mNextUnblockedEvent(NULL),
+    mNextUnblockedEvent(nullptr),
     mDispatchEnabled(false), mDispatchFrozen(false), mInputFilterEnabled(false),
+    mFocusedDisplayId(ADISPLAY_ID_DEFAULT),
     mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) {
     mLooper = new Looper(false);
 
-    mKeyRepeatState.lastKeyEntry = NULL;
+    mKeyRepeatState.lastKeyEntry = nullptr;
 
     policy->getDispatcherConfiguration(&mConfig);
 }
@@ -360,7 +367,7 @@
 
     // Now we have an event to dispatch.
     // All events are eventually dequeued and processed this way, even if we intend to drop them.
-    ALOG_ASSERT(mPendingEvent != NULL);
+    ALOG_ASSERT(mPendingEvent != nullptr);
     bool done = false;
     DropReason dropReason = DROP_REASON_NOT_DROPPED;
     if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) {
@@ -370,7 +377,7 @@
     }
 
     if (mNextUnblockedEvent == mPendingEvent) {
-        mNextUnblockedEvent = NULL;
+        mNextUnblockedEvent = nullptr;
     }
 
     switch (mPendingEvent->type) {
@@ -481,14 +488,14 @@
         if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN
                 && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER)
                 && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY
-                && mInputTargetWaitApplicationHandle != NULL) {
+                && mInputTargetWaitApplicationHandle != nullptr) {
             int32_t displayId = motionEntry->displayId;
             int32_t x = int32_t(motionEntry->pointerCoords[0].
                     getAxisValue(AMOTION_EVENT_AXIS_X));
             int32_t y = int32_t(motionEntry->pointerCoords[0].
                     getAxisValue(AMOTION_EVENT_AXIS_Y));
             sp<InputWindowHandle> touchedWindowHandle = findTouchedWindowAtLocked(displayId, x, y);
-            if (touchedWindowHandle != NULL
+            if (touchedWindowHandle != nullptr
                     && touchedWindowHandle->inputApplicationHandle
                             != mInputTargetWaitApplicationHandle) {
                 // User touched a different application than the one we are waiting on.
@@ -515,9 +522,10 @@
 sp<InputWindowHandle> InputDispatcher::findTouchedWindowAtLocked(int32_t displayId,
         int32_t x, int32_t y) {
     // Traverse windows from front to back to find touched window.
-    size_t numWindows = mWindowHandles.size();
+    const Vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+    size_t numWindows = windowHandles.size();
     for (size_t i = 0; i < numWindows; i++) {
-        sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+        sp<InputWindowHandle> windowHandle = windowHandles.itemAt(i);
         const InputWindowInfo* windowInfo = windowHandle->getInfo();
         if (windowInfo->displayId == displayId) {
             int32_t flags = windowInfo->layoutParamsFlags;
@@ -534,7 +542,7 @@
             }
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) {
@@ -663,7 +671,7 @@
     if (mPendingEvent) {
         resetANRTimeoutsLocked();
         releaseInboundEventLocked(mPendingEvent);
-        mPendingEvent = NULL;
+        mPendingEvent = nullptr;
     }
 }
 
@@ -676,7 +684,7 @@
         setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED);
     }
     if (entry == mNextUnblockedEvent) {
-        mNextUnblockedEvent = NULL;
+        mNextUnblockedEvent = nullptr;
     }
     addRecentEventLocked(entry);
     entry->release();
@@ -685,7 +693,7 @@
 void InputDispatcher::resetKeyRepeatLocked() {
     if (mKeyRepeatState.lastKeyEntry) {
         mKeyRepeatState.lastKeyEntry->release();
-        mKeyRepeatState.lastKeyEntry = NULL;
+        mKeyRepeatState.lastKeyEntry = nullptr;
     }
 }
 
@@ -702,7 +710,7 @@
         entry->repeatCount += 1;
     } else {
         KeyEntry* newEntry = new KeyEntry(currentTime,
-                entry->deviceId, entry->source, policyFlags,
+                entry->deviceId, entry->source, entry->displayId, policyFlags,
                 entry->action, entry->flags, entry->keyCode, entry->scanCode,
                 entry->metaState, entry->repeatCount + 1, entry->downTime);
 
@@ -807,8 +815,10 @@
         if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) {
             CommandEntry* commandEntry = postCommandLocked(
                     & InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible);
-            if (mFocusedWindowHandle != NULL) {
-                commandEntry->inputWindowHandle = mFocusedWindowHandle;
+            sp<InputWindowHandle> focusedWindowHandle =
+                    getValueByKey(mFocusedWindowHandlesByDisplay, getTargetDisplayId(entry));
+            if (focusedWindowHandle != nullptr) {
+                commandEntry->inputWindowHandle = focusedWindowHandle;
             }
             commandEntry->keyEntry = entry;
             entry->refCount += 1;
@@ -851,11 +861,11 @@
 
 void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) {
 #if DEBUG_OUTBOUND_EVENT_DETAILS
-    ALOGD("%seventTime=%" PRId64 ", deviceId=%d, source=0x%x, policyFlags=0x%x, "
-            "action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, "
-            "repeatCount=%d, downTime=%" PRId64,
+    ALOGD("%seventTime=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32 ", "
+            "policyFlags=0x%x, action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, "
+            "metaState=0x%x, repeatCount=%d, downTime=%" PRId64,
             prefix,
-            entry->eventTime, entry->deviceId, entry->source, entry->policyFlags,
+            entry->eventTime, entry->deviceId, entry->source, entry->displayId, entry->policyFlags,
             entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState,
             entry->repeatCount, entry->downTime);
 #endif
@@ -924,12 +934,13 @@
 
 void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) {
 #if DEBUG_OUTBOUND_EVENT_DETAILS
-    ALOGD("%seventTime=%" PRId64 ", deviceId=%d, source=0x%x, policyFlags=0x%x, "
+    ALOGD("%seventTime=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32
+            ", policyFlags=0x%x, "
             "action=0x%x, actionButton=0x%x, flags=0x%x, "
             "metaState=0x%x, buttonState=0x%x,"
             "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%" PRId64,
             prefix,
-            entry->eventTime, entry->deviceId, entry->source, entry->policyFlags,
+            entry->eventTime, entry->deviceId, entry->source, entry->displayId, entry->policyFlags,
             entry->action, entry->actionButton, entry->flags,
             entry->metaState, entry->buttonState,
             entry->edgeFlags, entry->xPrecision, entry->yPrecision,
@@ -987,7 +998,7 @@
         const sp<InputApplicationHandle>& applicationHandle,
         const sp<InputWindowHandle>& windowHandle,
         nsecs_t* nextWakeupTime, const char* reason) {
-    if (applicationHandle == NULL && windowHandle == NULL) {
+    if (applicationHandle == nullptr && windowHandle == nullptr) {
         if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) {
 #if DEBUG_FOCUS
             ALOGD("Waiting for system to become ready for input.  Reason: %s", reason);
@@ -1006,9 +1017,9 @@
                     reason);
 #endif
             nsecs_t timeout;
-            if (windowHandle != NULL) {
+            if (windowHandle != nullptr) {
                 timeout = windowHandle->getDispatchingTimeout(DEFAULT_INPUT_DISPATCHING_TIMEOUT);
-            } else if (applicationHandle != NULL) {
+            } else if (applicationHandle != nullptr) {
                 timeout = applicationHandle->getDispatchingTimeout(
                         DEFAULT_INPUT_DISPATCHING_TIMEOUT);
             } else {
@@ -1021,10 +1032,10 @@
             mInputTargetWaitTimeoutExpired = false;
             mInputTargetWaitApplicationHandle.clear();
 
-            if (windowHandle != NULL) {
+            if (windowHandle != nullptr) {
                 mInputTargetWaitApplicationHandle = windowHandle->inputApplicationHandle;
             }
-            if (mInputTargetWaitApplicationHandle == NULL && applicationHandle != NULL) {
+            if (mInputTargetWaitApplicationHandle == nullptr && applicationHandle != nullptr) {
                 mInputTargetWaitApplicationHandle = applicationHandle;
             }
         }
@@ -1067,7 +1078,7 @@
                 sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
                 sp<InputWindowHandle> windowHandle = connection->inputWindowHandle;
 
-                if (windowHandle != NULL) {
+                if (windowHandle != nullptr) {
                     const InputWindowInfo* info = windowHandle->getInfo();
                     if (info) {
                         ssize_t stateIndex = mTouchStatesByDisplay.indexOfKey(info->displayId);
@@ -1106,17 +1117,49 @@
     mInputTargetWaitApplicationHandle.clear();
 }
 
+/**
+ * Get the display id that the given event should go to. If this event specifies a valid display id,
+ * then it should be dispatched to that display. Otherwise, the event goes to the focused display.
+ * Focused display is the display that the user most recently interacted with.
+ */
+int32_t InputDispatcher::getTargetDisplayId(const EventEntry* entry) {
+    int32_t displayId;
+    switch (entry->type) {
+    case EventEntry::TYPE_KEY: {
+        const KeyEntry* typedEntry = static_cast<const KeyEntry*>(entry);
+        displayId = typedEntry->displayId;
+        break;
+    }
+    case EventEntry::TYPE_MOTION: {
+        const MotionEntry* typedEntry = static_cast<const MotionEntry*>(entry);
+        displayId = typedEntry->displayId;
+        break;
+    }
+    default: {
+        ALOGE("Unsupported event type '%" PRId32 "' for target display.", entry->type);
+        return ADISPLAY_ID_NONE;
+    }
+    }
+    return displayId == ADISPLAY_ID_NONE ? mFocusedDisplayId : displayId;
+}
+
 int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime,
         const EventEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime) {
     int32_t injectionResult;
     std::string reason;
 
+    int32_t displayId = getTargetDisplayId(entry);
+    sp<InputWindowHandle> focusedWindowHandle =
+            getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+    sp<InputApplicationHandle> focusedApplicationHandle =
+            getValueByKey(mFocusedApplicationHandlesByDisplay, displayId);
+
     // If there is no currently focused window and no focused application
     // then drop the event.
-    if (mFocusedWindowHandle == NULL) {
-        if (mFocusedApplicationHandle != NULL) {
+    if (focusedWindowHandle == nullptr) {
+        if (focusedApplicationHandle != nullptr) {
             injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
-                    mFocusedApplicationHandle, NULL, nextWakeupTime,
+                    focusedApplicationHandle, nullptr, nextWakeupTime,
                     "Waiting because no window has focus but there is a "
                     "focused application that may eventually add a window "
                     "when it finishes starting up.");
@@ -1129,23 +1172,23 @@
     }
 
     // Check permissions.
-    if (! checkInjectionPermission(mFocusedWindowHandle, entry->injectionState)) {
+    if (!checkInjectionPermission(focusedWindowHandle, entry->injectionState)) {
         injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
         goto Failed;
     }
 
     // Check whether the window is ready for more input.
     reason = checkWindowReadyForMoreInputLocked(currentTime,
-            mFocusedWindowHandle, entry, "focused");
+            focusedWindowHandle, entry, "focused");
     if (!reason.empty()) {
         injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
-                mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime, reason.c_str());
+                focusedApplicationHandle, focusedWindowHandle, nextWakeupTime, reason.c_str());
         goto Unresponsive;
     }
 
     // Success!  Output targets.
     injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
-    addWindowTargetLocked(mFocusedWindowHandle,
+    addWindowTargetLocked(focusedWindowHandle,
             InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS, BitSet32(0),
             inputTargets);
 
@@ -1186,7 +1229,7 @@
     // Copy current touch state into mTempTouchState.
     // This state is always reset at the end of this function, so if we don't find state
     // for the specified display then our initial state will be empty.
-    const TouchState* oldState = NULL;
+    const TouchState* oldState = nullptr;
     ssize_t oldStateIndex = mTouchStatesByDisplay.indexOfKey(displayId);
     if (oldStateIndex >= 0) {
         oldState = &mTouchStatesByDisplay.valueAt(oldStateIndex);
@@ -1246,9 +1289,10 @@
         bool isTouchModal = false;
 
         // Traverse windows from front to back to find touched window and outside targets.
-        size_t numWindows = mWindowHandles.size();
+        const Vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+        size_t numWindows = windowHandles.size();
         for (size_t i = 0; i < numWindows; i++) {
-            sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+            sp<InputWindowHandle> windowHandle = windowHandles.itemAt(i);
             const InputWindowInfo* windowInfo = windowHandle->getInfo();
             if (windowInfo->displayId != displayId) {
                 continue; // wrong display
@@ -1274,21 +1318,21 @@
         }
 
         // Figure out whether splitting will be allowed for this window.
-        if (newTouchedWindowHandle != NULL
+        if (newTouchedWindowHandle != nullptr
                 && newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {
             // New window supports splitting.
             isSplit = true;
         } else if (isSplit) {
             // New window does not support splitting but we have already split events.
             // Ignore the new window.
-            newTouchedWindowHandle = NULL;
+            newTouchedWindowHandle = nullptr;
         }
 
         // Handle the case where we did not find a window.
-        if (newTouchedWindowHandle == NULL) {
+        if (newTouchedWindowHandle == nullptr) {
             // Try to assign the pointer to the first foreground window we find, if there is one.
             newTouchedWindowHandle = mTempTouchState.getFirstForegroundWindowHandle();
-            if (newTouchedWindowHandle == NULL) {
+            if (newTouchedWindowHandle == nullptr) {
                 ALOGI("Dropping event because there is no touchable window at (%d, %d).", x, y);
                 injectionResult = INPUT_EVENT_INJECTION_FAILED;
                 goto Failed;
@@ -1345,7 +1389,7 @@
             sp<InputWindowHandle> newTouchedWindowHandle =
                     findTouchedWindowAtLocked(displayId, x, y);
             if (oldTouchedWindowHandle != newTouchedWindowHandle
-                    && newTouchedWindowHandle != NULL) {
+                    && newTouchedWindowHandle != nullptr) {
 #if DEBUG_FOCUS
                 ALOGD("Touch is slipping out of window %s into window %s.",
                         oldTouchedWindowHandle->getName().c_str(),
@@ -1380,7 +1424,7 @@
 
     if (newHoverWindowHandle != mLastHoverWindowHandle) {
         // Let the previous window know that the hover sequence is over.
-        if (mLastHoverWindowHandle != NULL) {
+        if (mLastHoverWindowHandle != nullptr) {
 #if DEBUG_HOVER
             ALOGD("Sending hover exit event to window %s.",
                     mLastHoverWindowHandle->getName().c_str());
@@ -1390,7 +1434,7 @@
         }
 
         // Let the new window know that the hover sequence is starting.
-        if (newHoverWindowHandle != NULL) {
+        if (newHoverWindowHandle != nullptr) {
 #if DEBUG_HOVER
             ALOGD("Sending hover enter event to window %s.",
                     newHoverWindowHandle->getName().c_str());
@@ -1455,7 +1499,7 @@
                     touchedWindow.windowHandle, entry, "touched");
             if (!reason.empty()) {
                 injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
-                        NULL, touchedWindow.windowHandle, nextWakeupTime, reason.c_str());
+                        nullptr, touchedWindow.windowHandle, nextWakeupTime, reason.c_str());
                 goto Unresponsive;
             }
         }
@@ -1471,8 +1515,10 @@
         sp<InputWindowHandle> foregroundWindowHandle =
                 mTempTouchState.getFirstForegroundWindowHandle();
         if (foregroundWindowHandle->getInfo()->hasWallpaper) {
-            for (size_t i = 0; i < mWindowHandles.size(); i++) {
-                sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+            const Vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+            size_t numWindows = windowHandles.size();
+            for (size_t i = 0; i < numWindows; i++) {
+                sp<InputWindowHandle> windowHandle = windowHandles.itemAt(i);
                 const InputWindowInfo* info = windowHandle->getInfo();
                 if (info->displayId == displayId
                         && windowHandle->getInfo()->layoutParamsType
@@ -1503,7 +1549,7 @@
 Failed:
     // Check injection permission once and for all.
     if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) {
-        if (checkInjectionPermission(NULL, entry->injectionState)) {
+        if (checkInjectionPermission(nullptr, entry->injectionState)) {
             injectionPermission = INJECTION_PERMISSION_GRANTED;
         } else {
             injectionPermission = INJECTION_PERMISSION_DENIED;
@@ -1636,10 +1682,10 @@
 bool InputDispatcher::checkInjectionPermission(const sp<InputWindowHandle>& windowHandle,
         const InjectionState* injectionState) {
     if (injectionState
-            && (windowHandle == NULL
+            && (windowHandle == nullptr
                     || windowHandle->getInfo()->ownerUid != injectionState->injectorUid)
             && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) {
-        if (windowHandle != NULL) {
+        if (windowHandle != nullptr) {
             ALOGW("Permission denied: injecting event from pid %d uid %d to window %s "
                     "owned by uid %d",
                     injectionState->injectorPid, injectionState->injectorUid,
@@ -1657,9 +1703,10 @@
 bool InputDispatcher::isWindowObscuredAtPointLocked(
         const sp<InputWindowHandle>& windowHandle, int32_t x, int32_t y) const {
     int32_t displayId = windowHandle->getInfo()->displayId;
-    size_t numWindows = mWindowHandles.size();
+    const Vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+    size_t numWindows = windowHandles.size();
     for (size_t i = 0; i < numWindows; i++) {
-        sp<InputWindowHandle> otherHandle = mWindowHandles.itemAt(i);
+        sp<InputWindowHandle> otherHandle = windowHandles.itemAt(i);
         if (otherHandle == windowHandle) {
             break;
         }
@@ -1677,10 +1724,11 @@
 
 bool InputDispatcher::isWindowObscuredLocked(const sp<InputWindowHandle>& windowHandle) const {
     int32_t displayId = windowHandle->getInfo()->displayId;
+    const Vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
     const InputWindowInfo* windowInfo = windowHandle->getInfo();
-    size_t numWindows = mWindowHandles.size();
+    size_t numWindows = windowHandles.size();
     for (size_t i = 0; i < numWindows; i++) {
-        sp<InputWindowHandle> otherHandle = mWindowHandles.itemAt(i);
+        sp<InputWindowHandle> otherHandle = windowHandles.itemAt(i);
         if (otherHandle == windowHandle) {
             break;
         }
@@ -1778,8 +1826,8 @@
 std::string InputDispatcher::getApplicationWindowLabelLocked(
         const sp<InputApplicationHandle>& applicationHandle,
         const sp<InputWindowHandle>& windowHandle) {
-    if (applicationHandle != NULL) {
-        if (windowHandle != NULL) {
+    if (applicationHandle != nullptr) {
+        if (windowHandle != nullptr) {
             std::string label(applicationHandle->getName());
             label += " - ";
             label += windowHandle->getName();
@@ -1787,7 +1835,7 @@
         } else {
             return applicationHandle->getName();
         }
-    } else if (windowHandle != NULL) {
+    } else if (windowHandle != nullptr) {
         return windowHandle->getName();
     } else {
         return "<unknown application or window>";
@@ -1795,8 +1843,11 @@
 }
 
 void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) {
-    if (mFocusedWindowHandle != NULL) {
-        const InputWindowInfo* info = mFocusedWindowHandle->getInfo();
+    int32_t displayId = getTargetDisplayId(eventEntry);
+    sp<InputWindowHandle> focusedWindowHandle =
+            getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+    if (focusedWindowHandle != nullptr) {
+        const InputWindowInfo* info = focusedWindowHandle->getInfo();
         if (info->inputFeatures & InputWindowInfo::INPUT_FEATURE_DISABLE_USER_ACTIVITY) {
 #if DEBUG_DISPATCH_CYCLE
             ALOGD("Not poking user activity: disabled by window '%s'.", info->name.c_str());
@@ -2017,7 +2068,7 @@
 
             // Publish the key event.
             status = connection->inputPublisher.publishKeyEvent(dispatchEntry->seq,
-                    keyEntry->deviceId, keyEntry->source,
+                    keyEntry->deviceId, keyEntry->source, keyEntry->displayId,
                     dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags,
                     keyEntry->keyCode, keyEntry->scanCode,
                     keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime,
@@ -2291,7 +2342,7 @@
 
             InputTarget target;
             sp<InputWindowHandle> windowHandle = getWindowHandleLocked(connection->inputChannel);
-            if (windowHandle != NULL) {
+            if (windowHandle != nullptr) {
                 const InputWindowInfo* windowInfo = windowHandle->getInfo();
                 target.xOffset = -windowInfo->frameLeft;
                 target.yOffset = -windowInfo->frameTop;
@@ -2349,7 +2400,7 @@
                 "we expected there to be %d pointers.  This probably means we received "
                 "a broken sequence of pointer ids from the input device.",
                 splitPointerCount, pointerIds.count());
-        return NULL;
+        return nullptr;
     }
 
     int32_t action = originalMotionEntry->action;
@@ -2384,6 +2435,7 @@
             originalMotionEntry->eventTime,
             originalMotionEntry->deviceId,
             originalMotionEntry->source,
+            originalMotionEntry->displayId,
             originalMotionEntry->policyFlags,
             action,
             originalMotionEntry->actionButton,
@@ -2394,7 +2446,6 @@
             originalMotionEntry->xPrecision,
             originalMotionEntry->yPrecision,
             originalMotionEntry->downTime,
-            originalMotionEntry->displayId,
             splitPointerCount, splitPointerProperties, splitPointerCoords, 0, 0);
 
     if (originalMotionEntry->injectionState) {
@@ -2423,12 +2474,49 @@
     }
 }
 
+/**
+ * If one of the meta shortcuts is detected, process them here:
+ *     Meta + Backspace -> generate BACK
+ *     Meta + Enter -> generate HOME
+ * This will potentially overwrite keyCode and metaState.
+ */
+void InputDispatcher::accelerateMetaShortcuts(const int32_t deviceId, const int32_t action,
+        int32_t& keyCode, int32_t& metaState) {
+    if (metaState & AMETA_META_ON && action == AKEY_EVENT_ACTION_DOWN) {
+        int32_t newKeyCode = AKEYCODE_UNKNOWN;
+        if (keyCode == AKEYCODE_DEL) {
+            newKeyCode = AKEYCODE_BACK;
+        } else if (keyCode == AKEYCODE_ENTER) {
+            newKeyCode = AKEYCODE_HOME;
+        }
+        if (newKeyCode != AKEYCODE_UNKNOWN) {
+            AutoMutex _l(mLock);
+            struct KeyReplacement replacement = {keyCode, deviceId};
+            mReplacedKeys.add(replacement, newKeyCode);
+            keyCode = newKeyCode;
+            metaState &= ~(AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
+        }
+    } else if (action == AKEY_EVENT_ACTION_UP) {
+        // In order to maintain a consistent stream of up and down events, check to see if the key
+        // going up is one we've replaced in a down event and haven't yet replaced in an up event,
+        // even if the modifier was released between the down and the up events.
+        AutoMutex _l(mLock);
+        struct KeyReplacement replacement = {keyCode, deviceId};
+        ssize_t index = mReplacedKeys.indexOfKey(replacement);
+        if (index >= 0) {
+            keyCode = mReplacedKeys.valueAt(index);
+            mReplacedKeys.removeItemsAt(index);
+            metaState &= ~(AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
+        }
+    }
+}
+
 void InputDispatcher::notifyKey(const NotifyKeyArgs* args) {
 #if DEBUG_INBOUND_EVENT_DETAILS
     ALOGD("notifyKey - eventTime=%" PRId64
-            ", deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, "
+            ", deviceId=%d, source=0x%x, displayId=%" PRId32 "policyFlags=0x%x, action=0x%x, "
             "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%" PRId64,
-            args->eventTime, args->deviceId, args->source, args->policyFlags,
+            args->eventTime, args->deviceId, args->source, args->displayId, args->policyFlags,
             args->action, args->flags, args->keyCode, args->scanCode,
             args->metaState, args->downTime);
 #endif
@@ -2450,36 +2538,10 @@
     policyFlags |= POLICY_FLAG_TRUSTED;
 
     int32_t keyCode = args->keyCode;
-    if (metaState & AMETA_META_ON && args->action == AKEY_EVENT_ACTION_DOWN) {
-        int32_t newKeyCode = AKEYCODE_UNKNOWN;
-        if (keyCode == AKEYCODE_DEL) {
-            newKeyCode = AKEYCODE_BACK;
-        } else if (keyCode == AKEYCODE_ENTER) {
-            newKeyCode = AKEYCODE_HOME;
-        }
-        if (newKeyCode != AKEYCODE_UNKNOWN) {
-            AutoMutex _l(mLock);
-            struct KeyReplacement replacement = {keyCode, args->deviceId};
-            mReplacedKeys.add(replacement, newKeyCode);
-            keyCode = newKeyCode;
-            metaState &= ~(AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
-        }
-    } else if (args->action == AKEY_EVENT_ACTION_UP) {
-        // In order to maintain a consistent stream of up and down events, check to see if the key
-        // going up is one we've replaced in a down event and haven't yet replaced in an up event,
-        // even if the modifier was released between the down and the up events.
-        AutoMutex _l(mLock);
-        struct KeyReplacement replacement = {keyCode, args->deviceId};
-        ssize_t index = mReplacedKeys.indexOfKey(replacement);
-        if (index >= 0) {
-            keyCode = mReplacedKeys.valueAt(index);
-            mReplacedKeys.removeItemsAt(index);
-            metaState &= ~(AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
-        }
-    }
+    accelerateMetaShortcuts(args->deviceId, args->action, keyCode, metaState);
 
     KeyEvent event;
-    event.initialize(args->deviceId, args->source, args->action,
+    event.initialize(args->deviceId, args->source, args->displayId, args->action,
             flags, keyCode, args->scanCode, metaState, 0,
             args->downTime, args->eventTime);
 
@@ -2507,7 +2569,7 @@
 
         int32_t repeatCount = 0;
         KeyEntry* newEntry = new KeyEntry(args->eventTime,
-                args->deviceId, args->source, policyFlags,
+                args->deviceId, args->source, args->displayId, policyFlags,
                 args->action, flags, keyCode, args->scanCode,
                 metaState, repeatCount, args->downTime);
 
@@ -2526,10 +2588,11 @@
 
 void InputDispatcher::notifyMotion(const NotifyMotionArgs* args) {
 #if DEBUG_INBOUND_EVENT_DETAILS
-    ALOGD("notifyMotion - eventTime=%" PRId64 ", deviceId=%d, source=0x%x, policyFlags=0x%x, "
+    ALOGD("notifyMotion - eventTime=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32
+            ", policyFlags=0x%x, "
             "action=0x%x, actionButton=0x%x, flags=0x%x, metaState=0x%x, buttonState=0x%x,"
             "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%" PRId64,
-            args->eventTime, args->deviceId, args->source, args->policyFlags,
+            args->eventTime, args->deviceId, args->source, args->displayId, args->policyFlags,
             args->action, args->actionButton, args->flags, args->metaState, args->buttonState,
             args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime);
     for (uint32_t i = 0; i < args->pointerCount; i++) {
@@ -2573,7 +2636,8 @@
             mLock.unlock();
 
             MotionEvent event;
-            event.initialize(args->deviceId, args->source, args->action, args->actionButton,
+            event.initialize(args->deviceId, args->source, args->displayId,
+                    args->action, args->actionButton,
                     args->flags, args->edgeFlags, args->metaState, args->buttonState,
                     0, 0, args->xPrecision, args->yPrecision,
                     args->downTime, args->eventTime,
@@ -2589,11 +2653,10 @@
 
         // Just enqueue a new motion event.
         MotionEntry* newEntry = new MotionEntry(args->eventTime,
-                args->deviceId, args->source, policyFlags,
+                args->deviceId, args->source, args->displayId, policyFlags,
                 args->action, args->actionButton, args->flags,
                 args->metaState, args->buttonState,
                 args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime,
-                args->displayId,
                 args->pointerCount, args->pointerProperties, args->pointerCoords, 0, 0);
 
         needWake = enqueueInboundEventLocked(newEntry);
@@ -2642,14 +2705,13 @@
     }
 }
 
-int32_t InputDispatcher::injectInputEvent(const InputEvent* event, int32_t displayId,
+int32_t InputDispatcher::injectInputEvent(const InputEvent* event,
         int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
         uint32_t policyFlags) {
 #if DEBUG_INBOUND_EVENT_DETAILS
     ALOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, "
-            "syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x, displayId=%d",
-            event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags,
-            displayId);
+            "syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x",
+            event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags);
 #endif
 
     nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis);
@@ -2663,20 +2725,29 @@
     EventEntry* lastInjectedEntry;
     switch (event->getType()) {
     case AINPUT_EVENT_TYPE_KEY: {
-        const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event);
-        int32_t action = keyEvent->getAction();
+        KeyEvent keyEvent;
+        keyEvent.initialize(*static_cast<const KeyEvent*>(event));
+        int32_t action = keyEvent.getAction();
         if (! validateKeyEvent(action)) {
             return INPUT_EVENT_INJECTION_FAILED;
         }
 
-        int32_t flags = keyEvent->getFlags();
+        int32_t flags = keyEvent.getFlags();
+        int32_t keyCode = keyEvent.getKeyCode();
+        int32_t metaState = keyEvent.getMetaState();
+        accelerateMetaShortcuts(keyEvent.getDeviceId(), action,
+                /*byref*/ keyCode, /*byref*/ metaState);
+        keyEvent.initialize(keyEvent.getDeviceId(), keyEvent.getSource(), keyEvent.getDisplayId(),
+            action, flags, keyCode, keyEvent.getScanCode(), metaState, 0,
+            keyEvent.getDownTime(), keyEvent.getEventTime());
+
         if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) {
             policyFlags |= POLICY_FLAG_VIRTUAL;
         }
 
         if (!(policyFlags & POLICY_FLAG_FILTERED)) {
             android::base::Timer t;
-            mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags);
+            mPolicy->interceptKeyBeforeQueueing(&keyEvent, /*byref*/ policyFlags);
             if (t.duration() > SLOW_INTERCEPTION_THRESHOLD) {
                 ALOGW("Excessive delay in interceptKeyBeforeQueueing; took %s ms",
                         std::to_string(t.duration().count()).c_str());
@@ -2684,11 +2755,11 @@
         }
 
         mLock.lock();
-        firstInjectedEntry = new KeyEntry(keyEvent->getEventTime(),
-                keyEvent->getDeviceId(), keyEvent->getSource(),
+        firstInjectedEntry = new KeyEntry(keyEvent.getEventTime(),
+                keyEvent.getDeviceId(), keyEvent.getSource(), keyEvent.getDisplayId(),
                 policyFlags, action, flags,
-                keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(),
-                keyEvent->getRepeatCount(), keyEvent->getDownTime());
+                keyEvent.getKeyCode(), keyEvent.getScanCode(), keyEvent.getMetaState(),
+                keyEvent.getRepeatCount(), keyEvent.getDownTime());
         lastInjectedEntry = firstInjectedEntry;
         break;
     }
@@ -2717,12 +2788,13 @@
         const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes();
         const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords();
         firstInjectedEntry = new MotionEntry(*sampleEventTimes,
-                motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags,
+                motionEvent->getDeviceId(), motionEvent->getSource(), motionEvent->getDisplayId(),
+                policyFlags,
                 action, actionButton, motionEvent->getFlags(),
                 motionEvent->getMetaState(), motionEvent->getButtonState(),
                 motionEvent->getEdgeFlags(),
                 motionEvent->getXPrecision(), motionEvent->getYPrecision(),
-                motionEvent->getDownTime(), displayId,
+                motionEvent->getDownTime(),
                 uint32_t(pointerCount), pointerProperties, samplePointerCoords,
                 motionEvent->getXOffset(), motionEvent->getYOffset());
         lastInjectedEntry = firstInjectedEntry;
@@ -2730,12 +2802,13 @@
             sampleEventTimes += 1;
             samplePointerCoords += pointerCount;
             MotionEntry* nextInjectedEntry = new MotionEntry(*sampleEventTimes,
-                    motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags,
+                    motionEvent->getDeviceId(), motionEvent->getSource(),
+                    motionEvent->getDisplayId(), policyFlags,
                     action, actionButton, motionEvent->getFlags(),
                     motionEvent->getMetaState(), motionEvent->getButtonState(),
                     motionEvent->getEdgeFlags(),
                     motionEvent->getXPrecision(), motionEvent->getYPrecision(),
-                    motionEvent->getDownTime(), displayId,
+                    motionEvent->getDownTime(),
                     uint32_t(pointerCount), pointerProperties, samplePointerCoords,
                     motionEvent->getXOffset(), motionEvent->getYOffset());
             lastInjectedEntry->next = nextInjectedEntry;
@@ -2758,7 +2831,7 @@
     lastInjectedEntry->injectionState = injectionState;
 
     bool needWake = false;
-    for (EventEntry* entry = firstInjectedEntry; entry != NULL; ) {
+    for (EventEntry* entry = firstInjectedEntry; entry != nullptr; ) {
         EventEntry* nextEntry = entry->next;
         needWake |= enqueueInboundEventLocked(entry);
         entry = nextEntry;
@@ -2886,84 +2959,136 @@
     }
 }
 
+Vector<sp<InputWindowHandle>> InputDispatcher::getWindowHandlesLocked(int32_t displayId) const {
+    std::unordered_map<int32_t, Vector<sp<InputWindowHandle>>>::const_iterator it =
+        mWindowHandlesByDisplay.find(displayId);
+    if(it != mWindowHandlesByDisplay.end()) {
+        return it->second;
+    }
+
+    // Return an empty one if nothing found.
+    return Vector<sp<InputWindowHandle>>();
+}
+
 sp<InputWindowHandle> InputDispatcher::getWindowHandleLocked(
         const sp<InputChannel>& inputChannel) const {
-    size_t numWindows = mWindowHandles.size();
-    for (size_t i = 0; i < numWindows; i++) {
-        const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
-        if (windowHandle->getInputChannel() == inputChannel) {
-            return windowHandle;
+    for (auto& it : mWindowHandlesByDisplay) {
+        const Vector<sp<InputWindowHandle>> windowHandles = it.second;
+        size_t numWindows = windowHandles.size();
+        for (size_t i = 0; i < numWindows; i++) {
+            const sp<InputWindowHandle>& windowHandle = windowHandles.itemAt(i);
+            if (windowHandle->getInputChannel() == inputChannel) {
+                return windowHandle;
+            }
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 bool InputDispatcher::hasWindowHandleLocked(
         const sp<InputWindowHandle>& windowHandle) const {
-    size_t numWindows = mWindowHandles.size();
-    for (size_t i = 0; i < numWindows; i++) {
-        if (mWindowHandles.itemAt(i) == windowHandle) {
-            return true;
+    for (auto& it : mWindowHandlesByDisplay) {
+        const Vector<sp<InputWindowHandle>> windowHandles = it.second;
+        size_t numWindows = windowHandles.size();
+        for (size_t i = 0; i < numWindows; i++) {
+            if (windowHandles.itemAt(i) == windowHandle) {
+                if (windowHandle->getInfo()->displayId != it.first) {
+                    ALOGE("Found window %s in display %d, but it should belong to display %d",
+                        windowHandle->getName().c_str(), it.first,
+                        windowHandle->getInfo()->displayId);
+                }
+                return true;
+            }
         }
     }
     return false;
 }
 
-void InputDispatcher::setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles) {
+/**
+ * Called from InputManagerService, update window handle list by displayId that can receive input.
+ * A window handle contains information about InputChannel, Touch Region, Types, Focused,...
+ * If set an empty list, remove all handles from the specific display.
+ * For focused handle, check if need to change and send a cancel event to previous one.
+ * For removed handle, check if need to send a cancel event if already in touch.
+ */
+void InputDispatcher::setInputWindows(const Vector<sp<InputWindowHandle>>& inputWindowHandles,
+        int32_t displayId) {
 #if DEBUG_FOCUS
     ALOGD("setInputWindows");
 #endif
     { // acquire lock
         AutoMutex _l(mLock);
 
-        Vector<sp<InputWindowHandle> > oldWindowHandles = mWindowHandles;
-        mWindowHandles = inputWindowHandles;
+        // Copy old handles for release if they are no longer present.
+        const Vector<sp<InputWindowHandle>> oldWindowHandles = getWindowHandlesLocked(displayId);
 
-        sp<InputWindowHandle> newFocusedWindowHandle;
+        sp<InputWindowHandle> newFocusedWindowHandle = nullptr;
         bool foundHoveredWindow = false;
-        for (size_t i = 0; i < mWindowHandles.size(); i++) {
-            const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
-            if (!windowHandle->updateInfo() || windowHandle->getInputChannel() == NULL) {
-                mWindowHandles.removeAt(i--);
-                continue;
+
+        if (inputWindowHandles.isEmpty()) {
+            // Remove all handles on a display if there are no windows left.
+            mWindowHandlesByDisplay.erase(displayId);
+        } else {
+            size_t numWindows = inputWindowHandles.size();
+            for (size_t i = 0; i < numWindows; i++) {
+                const sp<InputWindowHandle>& windowHandle = inputWindowHandles.itemAt(i);
+                if (!windowHandle->updateInfo() || windowHandle->getInputChannel() == nullptr) {
+                    continue;
+                }
+
+                if (windowHandle->getInfo()->displayId != displayId) {
+                    ALOGE("Window %s updated by wrong display %d, should belong to display %d",
+                        windowHandle->getName().c_str(), displayId,
+                        windowHandle->getInfo()->displayId);
+                    continue;
+                }
+
+                if (windowHandle->getInfo()->hasFocus) {
+                    newFocusedWindowHandle = windowHandle;
+                }
+                if (windowHandle == mLastHoverWindowHandle) {
+                    foundHoveredWindow = true;
+                }
             }
-            if (windowHandle->getInfo()->hasFocus) {
-                newFocusedWindowHandle = windowHandle;
-            }
-            if (windowHandle == mLastHoverWindowHandle) {
-                foundHoveredWindow = true;
-            }
+
+            // Insert or replace
+            mWindowHandlesByDisplay[displayId] = inputWindowHandles;
         }
 
         if (!foundHoveredWindow) {
-            mLastHoverWindowHandle = NULL;
+            mLastHoverWindowHandle = nullptr;
         }
 
-        if (mFocusedWindowHandle != newFocusedWindowHandle) {
-            if (mFocusedWindowHandle != NULL) {
+        sp<InputWindowHandle> oldFocusedWindowHandle =
+                getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+
+        if (oldFocusedWindowHandle != newFocusedWindowHandle) {
+            if (oldFocusedWindowHandle != nullptr) {
 #if DEBUG_FOCUS
                 ALOGD("Focus left window: %s",
-                        mFocusedWindowHandle->getName().c_str());
+                        oldFocusedWindowHandle->getName().c_str());
 #endif
-                sp<InputChannel> focusedInputChannel = mFocusedWindowHandle->getInputChannel();
-                if (focusedInputChannel != NULL) {
+                sp<InputChannel> focusedInputChannel = oldFocusedWindowHandle->getInputChannel();
+                if (focusedInputChannel != nullptr) {
                     CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS,
                             "focus left window");
                     synthesizeCancelationEventsForInputChannelLocked(
                             focusedInputChannel, options);
                 }
+                mFocusedWindowHandlesByDisplay.erase(displayId);
             }
-            if (newFocusedWindowHandle != NULL) {
+            if (newFocusedWindowHandle != nullptr) {
 #if DEBUG_FOCUS
                 ALOGD("Focus entered window: %s",
                         newFocusedWindowHandle->getName().c_str());
 #endif
+                mFocusedWindowHandlesByDisplay[displayId] = newFocusedWindowHandle;
             }
-            mFocusedWindowHandle = newFocusedWindowHandle;
         }
 
-        for (size_t d = 0; d < mTouchStatesByDisplay.size(); d++) {
-            TouchState& state = mTouchStatesByDisplay.editValueAt(d);
+        ssize_t stateIndex = mTouchStatesByDisplay.indexOfKey(displayId);
+        if (stateIndex >= 0) {
+            TouchState& state = mTouchStatesByDisplay.editValueAt(stateIndex);
             for (size_t i = 0; i < state.windows.size(); ) {
                 TouchedWindow& touchedWindow = state.windows.editItemAt(i);
                 if (!hasWindowHandleLocked(touchedWindow.windowHandle)) {
@@ -2973,7 +3098,7 @@
 #endif
                     sp<InputChannel> touchedInputChannel =
                             touchedWindow.windowHandle->getInputChannel();
-                    if (touchedInputChannel != NULL) {
+                    if (touchedInputChannel != nullptr) {
                         CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
                                 "touched window was removed");
                         synthesizeCancelationEventsForInputChannelLocked(
@@ -2990,7 +3115,8 @@
         // This ensures that unused input channels are released promptly.
         // Otherwise, they might stick around until the window handle is destroyed
         // which might not happen until the next GC.
-        for (size_t i = 0; i < oldWindowHandles.size(); i++) {
+        size_t numWindows = oldWindowHandles.size();
+        for (size_t i = 0; i < numWindows; i++) {
             const sp<InputWindowHandle>& oldWindowHandle = oldWindowHandles.itemAt(i);
             if (!hasWindowHandleLocked(oldWindowHandle)) {
 #if DEBUG_FOCUS
@@ -3006,25 +3132,28 @@
 }
 
 void InputDispatcher::setFocusedApplication(
-        const sp<InputApplicationHandle>& inputApplicationHandle) {
+        int32_t displayId, const sp<InputApplicationHandle>& inputApplicationHandle) {
 #if DEBUG_FOCUS
     ALOGD("setFocusedApplication");
 #endif
     { // acquire lock
         AutoMutex _l(mLock);
 
-        if (inputApplicationHandle != NULL && inputApplicationHandle->updateInfo()) {
-            if (mFocusedApplicationHandle != inputApplicationHandle) {
-                if (mFocusedApplicationHandle != NULL) {
+        sp<InputApplicationHandle> oldFocusedApplicationHandle =
+                getValueByKey(mFocusedApplicationHandlesByDisplay, displayId);
+        if (inputApplicationHandle != nullptr && inputApplicationHandle->updateInfo()) {
+            if (oldFocusedApplicationHandle != inputApplicationHandle) {
+                if (oldFocusedApplicationHandle != nullptr) {
                     resetANRTimeoutsLocked();
-                    mFocusedApplicationHandle->releaseInfo();
+                    oldFocusedApplicationHandle->releaseInfo();
                 }
-                mFocusedApplicationHandle = inputApplicationHandle;
+                mFocusedApplicationHandlesByDisplay[displayId] = inputApplicationHandle;
             }
-        } else if (mFocusedApplicationHandle != NULL) {
+        } else if (oldFocusedApplicationHandle != nullptr) {
             resetANRTimeoutsLocked();
-            mFocusedApplicationHandle->releaseInfo();
-            mFocusedApplicationHandle.clear();
+            oldFocusedApplicationHandle->releaseInfo();
+            oldFocusedApplicationHandle.clear();
+            mFocusedApplicationHandlesByDisplay.erase(displayId);
         }
 
 #if DEBUG_FOCUS
@@ -3036,6 +3165,62 @@
     mLooper->wake();
 }
 
+/**
+ * Sets the focused display, which is responsible for receiving focus-dispatched input events where
+ * the display not specified.
+ *
+ * We track any unreleased events for each window. If a window loses the ability to receive the
+ * released event, we will send a cancel event to it. So when the focused display is changed, we
+ * cancel all the unreleased display-unspecified events for the focused window on the old focused
+ * display. The display-specified events won't be affected.
+ */
+void InputDispatcher::setFocusedDisplay(int32_t displayId) {
+#if DEBUG_FOCUS
+    ALOGD("setFocusedDisplay displayId=%" PRId32, displayId);
+#endif
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        if (mFocusedDisplayId != displayId) {
+            sp<InputWindowHandle> oldFocusedWindowHandle =
+                    getValueByKey(mFocusedWindowHandlesByDisplay, mFocusedDisplayId);
+            if (oldFocusedWindowHandle != nullptr) {
+                sp<InputChannel> inputChannel = oldFocusedWindowHandle->getInputChannel();
+                if (inputChannel != nullptr) {
+                    CancelationOptions options(
+                            CancelationOptions::CANCEL_DISPLAY_UNSPECIFIED_EVENTS,
+                            "The display which contains this window no longer has focus.");
+                    synthesizeCancelationEventsForInputChannelLocked(inputChannel, options);
+                }
+            }
+            mFocusedDisplayId = displayId;
+
+            // Sanity check
+            sp<InputWindowHandle> newFocusedWindowHandle =
+                    getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+            if (newFocusedWindowHandle == nullptr) {
+                ALOGW("Focused display #%" PRId32 " does not have a focused window.", displayId);
+                if (!mFocusedWindowHandlesByDisplay.empty()) {
+                    ALOGE("But another display has a focused window:");
+                    for (auto& it : mFocusedWindowHandlesByDisplay) {
+                        const int32_t displayId = it.first;
+                        const sp<InputWindowHandle>& windowHandle = it.second;
+                        ALOGE("Display #%" PRId32 " has focused window: '%s'\n",
+                                displayId, windowHandle->getName().c_str());
+                    }
+                }
+            }
+        }
+
+#if DEBUG_FOCUS
+        logDispatchStateLocked();
+#endif
+    } // release lock
+
+    // Wake up poll loop since it may need to make new input dispatching choices.
+    mLooper->wake();
+}
+
 void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) {
 #if DEBUG_FOCUS
     ALOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen);
@@ -3062,7 +3247,7 @@
         }
 
 #if DEBUG_FOCUS
-        //logDispatchStateLocked();
+        logDispatchStateLocked();
 #endif
     } // release lock
 
@@ -3103,7 +3288,7 @@
 
         sp<InputWindowHandle> fromWindowHandle = getWindowHandleLocked(fromChannel);
         sp<InputWindowHandle> toWindowHandle = getWindowHandleLocked(toChannel);
-        if (fromWindowHandle == NULL || toWindowHandle == NULL) {
+        if (fromWindowHandle == nullptr || toWindowHandle == nullptr) {
 #if DEBUG_FOCUS
             ALOGD("Cannot transfer focus because from or to window not found.");
 #endif
@@ -3207,17 +3392,35 @@
 void InputDispatcher::dumpDispatchStateLocked(std::string& dump) {
     dump += StringPrintf(INDENT "DispatchEnabled: %d\n", mDispatchEnabled);
     dump += StringPrintf(INDENT "DispatchFrozen: %d\n", mDispatchFrozen);
+    dump += StringPrintf(INDENT "FocusedDisplayId: %" PRId32 "\n", mFocusedDisplayId);
 
-    if (mFocusedApplicationHandle != NULL) {
-        dump += StringPrintf(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n",
-                mFocusedApplicationHandle->getName().c_str(),
-                mFocusedApplicationHandle->getDispatchingTimeout(
-                        DEFAULT_INPUT_DISPATCHING_TIMEOUT) / 1000000.0);
+    if (!mFocusedApplicationHandlesByDisplay.empty()) {
+        dump += StringPrintf(INDENT "FocusedApplications:\n");
+        for (auto& it : mFocusedApplicationHandlesByDisplay) {
+            const int32_t displayId = it.first;
+            const sp<InputApplicationHandle>& applicationHandle = it.second;
+            dump += StringPrintf(
+                    INDENT2 "displayId=%" PRId32 ", name='%s', dispatchingTimeout=%0.3fms\n",
+                    displayId,
+                    applicationHandle->getName().c_str(),
+                    applicationHandle->getDispatchingTimeout(
+                            DEFAULT_INPUT_DISPATCHING_TIMEOUT) / 1000000.0);
+        }
     } else {
-        dump += StringPrintf(INDENT "FocusedApplication: <null>\n");
+        dump += StringPrintf(INDENT "FocusedApplications: <none>\n");
     }
-    dump += StringPrintf(INDENT "FocusedWindow: name='%s'\n",
-            mFocusedWindowHandle != NULL ? mFocusedWindowHandle->getName().c_str() : "<null>");
+
+    if (!mFocusedWindowHandlesByDisplay.empty()) {
+        dump += StringPrintf(INDENT "FocusedWindows:\n");
+        for (auto& it : mFocusedWindowHandlesByDisplay) {
+            const int32_t displayId = it.first;
+            const sp<InputWindowHandle>& windowHandle = it.second;
+            dump += StringPrintf(INDENT2 "displayId=%" PRId32 ", name='%s'\n",
+                    displayId, windowHandle->getName().c_str());
+        }
+    } else {
+        dump += StringPrintf(INDENT "FocusedWindows: <none>\n");
+    }
 
     if (!mTouchStatesByDisplay.isEmpty()) {
         dump += StringPrintf(INDENT "TouchStatesByDisplay:\n");
@@ -3243,36 +3446,44 @@
         dump += INDENT "TouchStates: <no displays touched>\n";
     }
 
-    if (!mWindowHandles.isEmpty()) {
-        dump += INDENT "Windows:\n";
-        for (size_t i = 0; i < mWindowHandles.size(); i++) {
-            const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
-            const InputWindowInfo* windowInfo = windowHandle->getInfo();
+    if (!mWindowHandlesByDisplay.empty()) {
+       for (auto& it : mWindowHandlesByDisplay) {
+            const Vector<sp<InputWindowHandle>> windowHandles = it.second;
+            dump += StringPrintf(INDENT "Display: %d\n", it.first);
+            if (!windowHandles.isEmpty()) {
+                dump += INDENT2 "Windows:\n";
+                for (size_t i = 0; i < windowHandles.size(); i++) {
+                    const sp<InputWindowHandle>& windowHandle = windowHandles.itemAt(i);
+                    const InputWindowInfo* windowInfo = windowHandle->getInfo();
 
-            dump += StringPrintf(INDENT2 "%zu: name='%s', displayId=%d, "
-                    "paused=%s, hasFocus=%s, hasWallpaper=%s, "
-                    "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, "
-                    "frame=[%d,%d][%d,%d], scale=%f, "
-                    "touchableRegion=",
-                    i, windowInfo->name.c_str(), windowInfo->displayId,
-                    toString(windowInfo->paused),
-                    toString(windowInfo->hasFocus),
-                    toString(windowInfo->hasWallpaper),
-                    toString(windowInfo->visible),
-                    toString(windowInfo->canReceiveKeys),
-                    windowInfo->layoutParamsFlags, windowInfo->layoutParamsType,
-                    windowInfo->layer,
-                    windowInfo->frameLeft, windowInfo->frameTop,
-                    windowInfo->frameRight, windowInfo->frameBottom,
-                    windowInfo->scaleFactor);
-            dumpRegion(dump, windowInfo->touchableRegion);
-            dump += StringPrintf(", inputFeatures=0x%08x", windowInfo->inputFeatures);
-            dump += StringPrintf(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n",
-                    windowInfo->ownerPid, windowInfo->ownerUid,
-                    windowInfo->dispatchingTimeout / 1000000.0);
+                    dump += StringPrintf(INDENT3 "%zu: name='%s', displayId=%d, "
+                            "paused=%s, hasFocus=%s, hasWallpaper=%s, "
+                            "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, "
+                            "frame=[%d,%d][%d,%d], scale=%f, "
+                            "touchableRegion=",
+                            i, windowInfo->name.c_str(), windowInfo->displayId,
+                            toString(windowInfo->paused),
+                            toString(windowInfo->hasFocus),
+                            toString(windowInfo->hasWallpaper),
+                            toString(windowInfo->visible),
+                            toString(windowInfo->canReceiveKeys),
+                            windowInfo->layoutParamsFlags, windowInfo->layoutParamsType,
+                            windowInfo->layer,
+                            windowInfo->frameLeft, windowInfo->frameTop,
+                            windowInfo->frameRight, windowInfo->frameBottom,
+                            windowInfo->scaleFactor);
+                    dumpRegion(dump, windowInfo->touchableRegion);
+                    dump += StringPrintf(", inputFeatures=0x%08x", windowInfo->inputFeatures);
+                    dump += StringPrintf(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n",
+                            windowInfo->ownerPid, windowInfo->ownerUid,
+                            windowInfo->dispatchingTimeout / 1000000.0);
+                }
+            } else {
+                dump += INDENT2 "Windows: <none>\n";
+            }
         }
     } else {
-        dump += INDENT "Windows: <none>\n";
+        dump += INDENT "Displays: <none>\n";
     }
 
     if (!mMonitoringChannels.isEmpty()) {
@@ -3528,7 +3739,7 @@
             dispatchLatency, waitDuration, reason);
 
     // Capture a record of the InputDispatcher state at the time of the ANR.
-    time_t t = time(NULL);
+    time_t t = time(nullptr);
     struct tm tm;
     localtime_r(&t, &tm);
     char timestr[64];
@@ -3583,8 +3794,8 @@
     mLock.lock();
 
     resumeAfterTargetsNotReadyTimeoutLocked(newTimeout,
-            commandEntry->inputWindowHandle != NULL
-                    ? commandEntry->inputWindowHandle->getInputChannel() : NULL);
+            commandEntry->inputWindowHandle != nullptr
+                    ? commandEntry->inputWindowHandle->getInputChannel() : nullptr);
 }
 
 void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible(
@@ -3817,6 +4028,7 @@
                 keyEntry->eventTime = event.getEventTime();
                 keyEntry->deviceId = event.getDeviceId();
                 keyEntry->source = event.getSource();
+                keyEntry->displayId = event.getDisplayId();
                 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK;
                 keyEntry->keyCode = fallbackKeyCode;
                 keyEntry->scanCode = event.getScanCode();
@@ -3855,7 +4067,7 @@
 }
 
 void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) {
-    event->initialize(entry->deviceId, entry->source, entry->action, entry->flags,
+    event->initialize(entry->deviceId, entry->source, entry->displayId, entry->action, entry->flags,
             entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount,
             entry->downTime, entry->eventTime);
 }
@@ -3934,7 +4146,7 @@
 
 InputDispatcher::EventEntry::EventEntry(int32_t type, nsecs_t eventTime, uint32_t policyFlags) :
         refCount(1), type(type), eventTime(eventTime), policyFlags(policyFlags),
-        injectionState(NULL), dispatchInProgress(false) {
+        injectionState(nullptr), dispatchInProgress(false) {
 }
 
 InputDispatcher::EventEntry::~EventEntry() {
@@ -3953,7 +4165,7 @@
 void InputDispatcher::EventEntry::releaseInjectionState() {
     if (injectionState) {
         injectionState->release();
-        injectionState = NULL;
+        injectionState = nullptr;
     }
 }
 
@@ -3991,11 +4203,11 @@
 // --- InputDispatcher::KeyEntry ---
 
 InputDispatcher::KeyEntry::KeyEntry(nsecs_t eventTime,
-        int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action,
+        int32_t deviceId, uint32_t source, int32_t displayId, uint32_t policyFlags, int32_t action,
         int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState,
         int32_t repeatCount, nsecs_t downTime) :
         EventEntry(TYPE_KEY, eventTime, policyFlags),
-        deviceId(deviceId), source(source), action(action), flags(flags),
+        deviceId(deviceId), source(source), displayId(displayId), action(action), flags(flags),
         keyCode(keyCode), scanCode(scanCode), metaState(metaState),
         repeatCount(repeatCount), downTime(downTime),
         syntheticRepeat(false), interceptKeyResult(KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN),
@@ -4006,10 +4218,10 @@
 }
 
 void InputDispatcher::KeyEntry::appendDescription(std::string& msg) const {
-    msg += StringPrintf("KeyEvent(deviceId=%d, source=0x%08x, action=%s, "
+    msg += StringPrintf("KeyEvent(deviceId=%d, source=0x%08x, displayId=%" PRId32 ", action=%s, "
             "flags=0x%08x, keyCode=%d, scanCode=%d, metaState=0x%08x, "
             "repeatCount=%d), policyFlags=0x%08x",
-            deviceId, source, keyActionToString(action).c_str(), flags, keyCode,
+            deviceId, source, displayId, keyActionToString(action).c_str(), flags, keyCode,
             scanCode, metaState, repeatCount, policyFlags);
 }
 
@@ -4026,18 +4238,19 @@
 // --- InputDispatcher::MotionEntry ---
 
 InputDispatcher::MotionEntry::MotionEntry(nsecs_t eventTime, int32_t deviceId,
-        uint32_t source, uint32_t policyFlags, int32_t action, int32_t actionButton,
+        uint32_t source, int32_t displayId, uint32_t policyFlags, int32_t action,
+        int32_t actionButton,
         int32_t flags, int32_t metaState, int32_t buttonState, int32_t edgeFlags,
         float xPrecision, float yPrecision, nsecs_t downTime,
-        int32_t displayId, uint32_t pointerCount,
+        uint32_t pointerCount,
         const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
         float xOffset, float yOffset) :
         EventEntry(TYPE_MOTION, eventTime, policyFlags),
         eventTime(eventTime),
-        deviceId(deviceId), source(source), action(action), actionButton(actionButton),
-        flags(flags), metaState(metaState), buttonState(buttonState),
+        deviceId(deviceId), source(source), displayId(displayId), action(action),
+        actionButton(actionButton), flags(flags), metaState(metaState), buttonState(buttonState),
         edgeFlags(edgeFlags), xPrecision(xPrecision), yPrecision(yPrecision),
-        downTime(downTime), displayId(displayId), pointerCount(pointerCount) {
+        downTime(downTime), pointerCount(pointerCount) {
     for (uint32_t i = 0; i < pointerCount; i++) {
         this->pointerProperties[i].copyFrom(pointerProperties[i]);
         this->pointerCoords[i].copyFrom(pointerCoords[i]);
@@ -4051,11 +4264,12 @@
 }
 
 void InputDispatcher::MotionEntry::appendDescription(std::string& msg) const {
-    msg += StringPrintf("MotionEvent(deviceId=%d, source=0x%08x, action=%s, actionButton=0x%08x, "
-            "flags=0x%08x, metaState=0x%08x, buttonState=0x%08x, "
-            "edgeFlags=0x%08x, xPrecision=%.1f, yPrecision=%.1f, displayId=%d, pointers=[",
-            deviceId, source, motionActionToString(action).c_str(), actionButton, flags, metaState,
-            buttonState, edgeFlags, xPrecision, yPrecision, displayId);
+    msg += StringPrintf("MotionEvent(deviceId=%d, source=0x%08x, displayId=%" PRId32
+            ", action=%s, actionButton=0x%08x, flags=0x%08x, metaState=0x%08x, buttonState=0x%08x, "
+            "edgeFlags=0x%08x, xPrecision=%.1f, yPrecision=%.1f, pointers=[",
+            deviceId, source, displayId, motionActionToString(action).c_str(), actionButton, flags,
+            metaState, buttonState, edgeFlags, xPrecision, yPrecision);
+
     for (uint32_t i = 0; i < pointerCount; i++) {
         if (i) {
             msg += ", ";
@@ -4184,8 +4398,8 @@
         }
 #if DEBUG_OUTBOUND_EVENT_DETAILS
         ALOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, "
-                "actionMasked=%d",
-                entry->deviceId, entry->source, actionMasked);
+                "displayId=%" PRId32 ", actionMasked=%d",
+                entry->deviceId, entry->source, entry->displayId, actionMasked);
 #endif
         return false;
     }
@@ -4237,8 +4451,8 @@
         }
 #if DEBUG_OUTBOUND_EVENT_DETAILS
         ALOGD("Dropping inconsistent motion pointer up/down or move event: "
-                "deviceId=%d, source=%08x, actionMasked=%d",
-                entry->deviceId, entry->source, actionMasked);
+                "deviceId=%d, source=%08x, displayId=%" PRId32 ", actionMasked=%d",
+                entry->deviceId, entry->source, entry->displayId, actionMasked);
 #endif
         return false;
     }
@@ -4250,8 +4464,9 @@
             return true;
         }
 #if DEBUG_OUTBOUND_EVENT_DETAILS
-        ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x",
-                entry->deviceId, entry->source);
+        ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x, "
+                "displayId=%" PRId32,
+                entry->deviceId, entry->source, entry->displayId);
 #endif
         return false;
     }
@@ -4276,6 +4491,7 @@
         const KeyMemento& memento = mKeyMementos.itemAt(i);
         if (memento.deviceId == entry->deviceId
                 && memento.source == entry->source
+                && memento.displayId == entry->displayId
                 && memento.keyCode == entry->keyCode
                 && memento.scanCode == entry->scanCode) {
             return i;
@@ -4303,6 +4519,7 @@
     KeyMemento& memento = mKeyMementos.editTop();
     memento.deviceId = entry->deviceId;
     memento.source = entry->source;
+    memento.displayId = entry->displayId;
     memento.keyCode = entry->keyCode;
     memento.scanCode = entry->scanCode;
     memento.metaState = entry->metaState;
@@ -4317,11 +4534,11 @@
     MotionMemento& memento = mMotionMementos.editTop();
     memento.deviceId = entry->deviceId;
     memento.source = entry->source;
+    memento.displayId = entry->displayId;
     memento.flags = flags;
     memento.xPrecision = entry->xPrecision;
     memento.yPrecision = entry->yPrecision;
     memento.downTime = entry->downTime;
-    memento.displayId = entry->displayId;
     memento.setPointers(entry);
     memento.hovering = hovering;
     memento.policyFlags = entry->policyFlags;
@@ -4341,7 +4558,7 @@
         const KeyMemento& memento = mKeyMementos.itemAt(i);
         if (shouldCancelKey(memento, options)) {
             outEvents.push(new KeyEntry(currentTime,
-                    memento.deviceId, memento.source, memento.policyFlags,
+                    memento.deviceId, memento.source, memento.displayId, memento.policyFlags,
                     AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED,
                     memento.keyCode, memento.scanCode, memento.metaState, 0, memento.downTime));
         }
@@ -4351,13 +4568,12 @@
         const MotionMemento& memento = mMotionMementos.itemAt(i);
         if (shouldCancelMotion(memento, options)) {
             outEvents.push(new MotionEntry(currentTime,
-                    memento.deviceId, memento.source, memento.policyFlags,
+                    memento.deviceId, memento.source, memento.displayId, memento.policyFlags,
                     memento.hovering
                             ? AMOTION_EVENT_ACTION_HOVER_EXIT
                             : AMOTION_EVENT_ACTION_CANCEL,
                     memento.flags, 0, 0, 0, 0,
                     memento.xPrecision, memento.yPrecision, memento.downTime,
-                    memento.displayId,
                     memento.pointerCount, memento.pointerProperties, memento.pointerCoords,
                     0, 0));
         }
@@ -4424,6 +4640,8 @@
         return true;
     case CancelationOptions::CANCEL_FALLBACK_EVENTS:
         return memento.flags & AKEY_EVENT_FLAG_FALLBACK;
+    case CancelationOptions::CANCEL_DISPLAY_UNSPECIFIED_EVENTS:
+        return memento.displayId == ADISPLAY_ID_NONE;
     default:
         return false;
     }
@@ -4442,6 +4660,8 @@
         return memento.source & AINPUT_SOURCE_CLASS_POINTER;
     case CancelationOptions::CANCEL_NON_POINTER_EVENTS:
         return !(memento.source & AINPUT_SOURCE_CLASS_POINTER);
+    case CancelationOptions::CANCEL_DISPLAY_UNSPECIFIED_EVENTS:
+        return memento.displayId == ADISPLAY_ID_NONE;
     default:
         return false;
     }
@@ -4461,7 +4681,7 @@
 }
 
 const std::string InputDispatcher::Connection::getWindowName() const {
-    if (inputWindowHandle != NULL) {
+    if (inputWindowHandle != nullptr) {
         return inputWindowHandle->getName();
     }
     if (monitor) {
@@ -4487,19 +4707,19 @@
 }
 
 InputDispatcher::DispatchEntry* InputDispatcher::Connection::findWaitQueueEntry(uint32_t seq) {
-    for (DispatchEntry* entry = waitQueue.head; entry != NULL; entry = entry->next) {
+    for (DispatchEntry* entry = waitQueue.head; entry != nullptr; entry = entry->next) {
         if (entry->seq == seq) {
             return entry;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 
 // --- InputDispatcher::CommandEntry ---
 
 InputDispatcher::CommandEntry::CommandEntry(Command command) :
-    command(command), eventTime(0), keyEntry(NULL), userActivityEventType(0),
+    command(command), eventTime(0), keyEntry(nullptr), userActivityEventType(0),
     seq(0), handled(false) {
 }
 
@@ -4510,7 +4730,7 @@
 // --- InputDispatcher::TouchState ---
 
 InputDispatcher::TouchState::TouchState() :
-    down(false), split(false), deviceId(-1), source(0), displayId(-1) {
+    down(false), split(false), deviceId(-1), source(0), displayId(ADISPLAY_ID_NONE) {
 }
 
 InputDispatcher::TouchState::~TouchState() {
@@ -4521,7 +4741,7 @@
     split = false;
     deviceId = -1;
     source = 0;
-    displayId = -1;
+    displayId = ADISPLAY_ID_NONE;
     windows.clear();
 }
 
@@ -4590,7 +4810,7 @@
             return window.windowHandle;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 bool InputDispatcher::TouchState::isSlippery() const {
diff --git a/services/inputflinger/InputDispatcher.h b/services/inputflinger/InputDispatcher.h
index 8da8450..aedad2f 100644
--- a/services/inputflinger/InputDispatcher.h
+++ b/services/inputflinger/InputDispatcher.h
@@ -18,7 +18,9 @@
 #define _UI_INPUT_DISPATCHER_H
 
 #include <input/Input.h>
+#include <input/InputApplication.h>
 #include <input/InputTransport.h>
+#include <input/InputWindow.h>
 #include <utils/KeyedVector.h>
 #include <utils/Vector.h>
 #include <utils/threads.h>
@@ -31,9 +33,8 @@
 #include <stddef.h>
 #include <unistd.h>
 #include <limits.h>
+#include <unordered_map>
 
-#include "InputWindow.h"
-#include "InputApplication.h"
 #include "InputListener.h"
 
 
@@ -299,7 +300,7 @@
      *
      * This method may be called on any thread (usually by the input manager).
      */
-    virtual int32_t injectInputEvent(const InputEvent* event, int32_t displayId,
+    virtual int32_t injectInputEvent(const InputEvent* event,
             int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
             uint32_t policyFlags) = 0;
 
@@ -307,14 +308,21 @@
      *
      * This method may be called on any thread (usually by the input manager).
      */
-    virtual void setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles) = 0;
+    virtual void setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles,
+            int32_t displayId) = 0;
 
-    /* Sets the focused application.
+    /* Sets the focused application on the given display.
      *
      * This method may be called on any thread (usually by the input manager).
      */
     virtual void setFocusedApplication(
-            const sp<InputApplicationHandle>& inputApplicationHandle) = 0;
+            int32_t displayId, const sp<InputApplicationHandle>& inputApplicationHandle) = 0;
+
+    /* Sets the focused display.
+     *
+     * This method may be called on any thread (usually by the input manager).
+     */
+    virtual void setFocusedDisplay(int32_t displayId) = 0;
 
     /* Sets the input dispatching mode.
      *
@@ -383,12 +391,15 @@
     virtual void notifySwitch(const NotifySwitchArgs* args);
     virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
 
-    virtual int32_t injectInputEvent(const InputEvent* event, int32_t displayId,
+    virtual int32_t injectInputEvent(const InputEvent* event,
             int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
             uint32_t policyFlags);
 
-    virtual void setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles);
-    virtual void setFocusedApplication(const sp<InputApplicationHandle>& inputApplicationHandle);
+    virtual void setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles,
+            int32_t displayId);
+    virtual void setFocusedApplication(int32_t displayId,
+            const sp<InputApplicationHandle>& inputApplicationHandle);
+    virtual void setFocusedDisplay(int32_t displayId);
     virtual void setInputDispatchMode(bool enabled, bool frozen);
     virtual void setInputFilterEnabled(bool enabled);
 
@@ -406,7 +417,7 @@
         T* prev;
 
     protected:
-        inline Link() : next(NULL), prev(NULL) { }
+        inline Link() : next(nullptr), prev(nullptr) { }
     };
 
     struct InjectionState {
@@ -441,7 +452,7 @@
 
         bool dispatchInProgress; // initially false, set to true while dispatching
 
-        inline bool isInjected() const { return injectionState != NULL; }
+        inline bool isInjected() const { return injectionState != nullptr; }
 
         void release();
 
@@ -474,6 +485,7 @@
     struct KeyEntry : EventEntry {
         int32_t deviceId;
         uint32_t source;
+        int32_t displayId;
         int32_t action;
         int32_t flags;
         int32_t keyCode;
@@ -494,8 +506,8 @@
         nsecs_t interceptKeyWakeupTime; // used with INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER
 
         KeyEntry(nsecs_t eventTime,
-                int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action,
-                int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState,
+                int32_t deviceId, uint32_t source, int32_t displayId, uint32_t policyFlags,
+                int32_t action, int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState,
                 int32_t repeatCount, nsecs_t downTime);
         virtual void appendDescription(std::string& msg) const;
         void recycle();
@@ -508,6 +520,7 @@
         nsecs_t eventTime;
         int32_t deviceId;
         uint32_t source;
+        int32_t displayId;
         int32_t action;
         int32_t actionButton;
         int32_t flags;
@@ -517,17 +530,15 @@
         float xPrecision;
         float yPrecision;
         nsecs_t downTime;
-        int32_t displayId;
         uint32_t pointerCount;
         PointerProperties pointerProperties[MAX_POINTERS];
         PointerCoords pointerCoords[MAX_POINTERS];
 
         MotionEntry(nsecs_t eventTime,
-                int32_t deviceId, uint32_t source, uint32_t policyFlags,
+                int32_t deviceId, uint32_t source, int32_t displayId, uint32_t policyFlags,
                 int32_t action, int32_t actionButton, int32_t flags,
                 int32_t metaState, int32_t buttonState, int32_t edgeFlags,
-                float xPrecision, float yPrecision, nsecs_t downTime,
-                int32_t displayId, uint32_t pointerCount,
+                float xPrecision, float yPrecision, nsecs_t downTime, uint32_t pointerCount,
                 const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
                 float xOffset, float yOffset);
         virtual void appendDescription(std::string& msg) const;
@@ -614,7 +625,7 @@
         T* tail;
         uint32_t entryCount;
 
-        inline Queue() : head(NULL), tail(NULL), entryCount(0) {
+        inline Queue() : head(nullptr), tail(nullptr), entryCount(0) {
         }
 
         inline bool isEmpty() const {
@@ -629,7 +640,7 @@
             } else {
                 head = entry;
             }
-            entry->next = NULL;
+            entry->next = nullptr;
             tail = entry;
         }
 
@@ -641,7 +652,7 @@
             } else {
                 tail = entry;
             }
-            entry->prev = NULL;
+            entry->prev = nullptr;
             head = entry;
         }
 
@@ -664,9 +675,9 @@
             T* entry = head;
             head = entry->next;
             if (head) {
-                head->prev = NULL;
+                head->prev = nullptr;
             } else {
-                tail = NULL;
+                tail = nullptr;
             }
             return entry;
         }
@@ -683,6 +694,10 @@
             CANCEL_POINTER_EVENTS = 1,
             CANCEL_NON_POINTER_EVENTS = 2,
             CANCEL_FALLBACK_EVENTS = 3,
+
+            /* Cancel events where the display not specified. These events would go to the focused
+             * display. */
+            CANCEL_DISPLAY_UNSPECIFIED_EVENTS = 4,
         };
 
         // The criterion to use to determine which events should be canceled.
@@ -754,6 +769,7 @@
         struct KeyMemento {
             int32_t deviceId;
             uint32_t source;
+            int32_t displayId;
             int32_t keyCode;
             int32_t scanCode;
             int32_t metaState;
@@ -765,11 +781,11 @@
         struct MotionMemento {
             int32_t deviceId;
             uint32_t source;
+            int32_t displayId;
             int32_t flags;
             float xPrecision;
             float yPrecision;
             nsecs_t downTime;
-            int32_t displayId;
             uint32_t pointerCount;
             PointerProperties pointerProperties[MAX_POINTERS];
             PointerCoords pointerCoords[MAX_POINTERS];
@@ -932,6 +948,9 @@
     };
     // Maps the key code replaced, device id tuple to the key code it was replaced with
     KeyedVector<KeyReplacement, int32_t> mReplacedKeys;
+    // Process certain Meta + Key combinations
+    void accelerateMetaShortcuts(const int32_t deviceId, const int32_t action,
+            int32_t& keyCode, int32_t& metaState);
 
     // Deferred command processing.
     bool haveCommandsLocked() const;
@@ -952,13 +971,14 @@
     bool mDispatchFrozen;
     bool mInputFilterEnabled;
 
-    Vector<sp<InputWindowHandle> > mWindowHandles;
-
+    std::unordered_map<int32_t, Vector<sp<InputWindowHandle>>> mWindowHandlesByDisplay;
+    // Get window handles by display, return an empty vector if not found.
+    Vector<sp<InputWindowHandle>> getWindowHandlesLocked(int32_t displayId) const;
     sp<InputWindowHandle> getWindowHandleLocked(const sp<InputChannel>& inputChannel) const;
     bool hasWindowHandleLocked(const sp<InputWindowHandle>& windowHandle) const;
 
     // Focus tracking for keys, trackball, etc.
-    sp<InputWindowHandle> mFocusedWindowHandle;
+    std::unordered_map<int32_t, sp<InputWindowHandle>> mFocusedWindowHandlesByDisplay;
 
     // Focus tracking for touch.
     struct TouchedWindow {
@@ -989,8 +1009,11 @@
     KeyedVector<int32_t, TouchState> mTouchStatesByDisplay;
     TouchState mTempTouchState;
 
-    // Focused application.
-    sp<InputApplicationHandle> mFocusedApplicationHandle;
+    // Focused applications.
+    std::unordered_map<int32_t, sp<InputApplicationHandle>> mFocusedApplicationHandlesByDisplay;
+
+    // Top focused display.
+    int32_t mFocusedDisplayId;
 
     // Dispatcher state at time of last ANR.
     std::string mLastANRState;
@@ -1038,6 +1061,7 @@
     nsecs_t getTimeSpentWaitingForApplicationLocked(nsecs_t currentTime);
     void resetANRTimeoutsLocked();
 
+    int32_t getTargetDisplayId(const EventEntry* entry);
     int32_t findFocusedWindowTargetsLocked(nsecs_t currentTime, const EventEntry* entry,
             Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime);
     int32_t findTouchedWindowTargetsLocked(nsecs_t currentTime, const MotionEntry* entry,
diff --git a/services/inputflinger/InputListener.cpp b/services/inputflinger/InputListener.cpp
index 520fea4..25a39a8 100644
--- a/services/inputflinger/InputListener.cpp
+++ b/services/inputflinger/InputListener.cpp
@@ -43,17 +43,18 @@
 // --- NotifyKeyArgs ---
 
 NotifyKeyArgs::NotifyKeyArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source,
-        uint32_t policyFlags,
+        int32_t displayId, uint32_t policyFlags,
         int32_t action, int32_t flags, int32_t keyCode, int32_t scanCode,
         int32_t metaState, nsecs_t downTime) :
-        eventTime(eventTime), deviceId(deviceId), source(source), policyFlags(policyFlags),
+        eventTime(eventTime), deviceId(deviceId), source(source), displayId(displayId),
+        policyFlags(policyFlags),
         action(action), flags(flags), keyCode(keyCode), scanCode(scanCode),
         metaState(metaState), downTime(downTime) {
 }
 
 NotifyKeyArgs::NotifyKeyArgs(const NotifyKeyArgs& other) :
         eventTime(other.eventTime), deviceId(other.deviceId), source(other.source),
-        policyFlags(other.policyFlags),
+        displayId(other.displayId), policyFlags(other.policyFlags),
         action(other.action), flags(other.flags),
         keyCode(other.keyCode), scanCode(other.scanCode),
         metaState(other.metaState), downTime(other.downTime) {
@@ -67,16 +68,17 @@
 // --- NotifyMotionArgs ---
 
 NotifyMotionArgs::NotifyMotionArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source,
-        uint32_t policyFlags,
+        int32_t displayId, uint32_t policyFlags,
         int32_t action, int32_t actionButton, int32_t flags, int32_t metaState,
-        int32_t buttonState, int32_t edgeFlags, int32_t displayId, uint32_t deviceTimestamp,
+        int32_t buttonState, int32_t edgeFlags, uint32_t deviceTimestamp,
         uint32_t pointerCount,
         const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
         float xPrecision, float yPrecision, nsecs_t downTime) :
-        eventTime(eventTime), deviceId(deviceId), source(source), policyFlags(policyFlags),
+        eventTime(eventTime), deviceId(deviceId), source(source), displayId(displayId),
+        policyFlags(policyFlags),
         action(action), actionButton(actionButton),
         flags(flags), metaState(metaState), buttonState(buttonState),
-        edgeFlags(edgeFlags), displayId(displayId), deviceTimestamp(deviceTimestamp),
+        edgeFlags(edgeFlags), deviceTimestamp(deviceTimestamp),
         pointerCount(pointerCount),
         xPrecision(xPrecision), yPrecision(yPrecision), downTime(downTime) {
     for (uint32_t i = 0; i < pointerCount; i++) {
@@ -87,10 +89,10 @@
 
 NotifyMotionArgs::NotifyMotionArgs(const NotifyMotionArgs& other) :
         eventTime(other.eventTime), deviceId(other.deviceId), source(other.source),
-        policyFlags(other.policyFlags),
+        displayId(other.displayId), policyFlags(other.policyFlags),
         action(other.action), actionButton(other.actionButton), flags(other.flags),
         metaState(other.metaState), buttonState(other.buttonState),
-        edgeFlags(other.edgeFlags), displayId(other.displayId),
+        edgeFlags(other.edgeFlags),
         deviceTimestamp(other.deviceTimestamp), pointerCount(other.pointerCount),
         xPrecision(other.xPrecision), yPrecision(other.yPrecision), downTime(other.downTime) {
     for (uint32_t i = 0; i < pointerCount; i++) {
diff --git a/services/inputflinger/InputListener.h b/services/inputflinger/InputListener.h
index 77afb34..a3d919b 100644
--- a/services/inputflinger/InputListener.h
+++ b/services/inputflinger/InputListener.h
@@ -55,6 +55,7 @@
     nsecs_t eventTime;
     int32_t deviceId;
     uint32_t source;
+    int32_t displayId;
     uint32_t policyFlags;
     int32_t action;
     int32_t flags;
@@ -65,8 +66,8 @@
 
     inline NotifyKeyArgs() { }
 
-    NotifyKeyArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source, uint32_t policyFlags,
-            int32_t action, int32_t flags, int32_t keyCode, int32_t scanCode,
+    NotifyKeyArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source, int32_t displayId,
+            uint32_t policyFlags, int32_t action, int32_t flags, int32_t keyCode, int32_t scanCode,
             int32_t metaState, nsecs_t downTime);
 
     NotifyKeyArgs(const NotifyKeyArgs& other);
@@ -82,6 +83,7 @@
     nsecs_t eventTime;
     int32_t deviceId;
     uint32_t source;
+    int32_t displayId;
     uint32_t policyFlags;
     int32_t action;
     int32_t actionButton;
@@ -89,7 +91,6 @@
     int32_t metaState;
     int32_t buttonState;
     int32_t edgeFlags;
-    int32_t displayId;
     /**
      * A timestamp in the input device's time base, not the platform's.
      * The units are microseconds since the last reset.
@@ -106,10 +107,11 @@
 
     inline NotifyMotionArgs() { }
 
-    NotifyMotionArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source, uint32_t policyFlags,
+    NotifyMotionArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source, int32_t displayId,
+            uint32_t policyFlags,
             int32_t action, int32_t actionButton, int32_t flags,
             int32_t metaState, int32_t buttonState,
-            int32_t edgeFlags, int32_t displayId, uint32_t deviceTimestamp, uint32_t pointerCount,
+            int32_t edgeFlags, uint32_t deviceTimestamp, uint32_t pointerCount,
             const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
             float xPrecision, float yPrecision, nsecs_t downTime);
 
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index a213b2d..92e0af2 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -31,7 +31,6 @@
 #include <utils/Vector.h>
 #include <utils/Timers.h>
 #include <utils/RefBase.h>
-#include <utils/String8.h>
 
 namespace android {
 
diff --git a/services/inputflinger/InputReader.cpp b/services/inputflinger/InputReader.cpp
index 2df0090..57fc17f 100644
--- a/services/inputflinger/InputReader.cpp
+++ b/services/inputflinger/InputReader.cpp
@@ -226,7 +226,7 @@
 }
 
 static void synthesizeButtonKey(InputReaderContext* context, int32_t action,
-        nsecs_t when, int32_t deviceId, uint32_t source,
+        nsecs_t when, int32_t deviceId, uint32_t source, int32_t displayId,
         uint32_t policyFlags, int32_t lastButtonState, int32_t currentButtonState,
         int32_t buttonState, int32_t keyCode) {
     if (
@@ -236,19 +236,19 @@
             || (action == AKEY_EVENT_ACTION_UP
                     && (lastButtonState & buttonState)
                     && !(currentButtonState & buttonState))) {
-        NotifyKeyArgs args(when, deviceId, source, policyFlags,
+        NotifyKeyArgs args(when, deviceId, source, displayId, policyFlags,
                 action, 0, keyCode, 0, context->getGlobalMetaState(), when);
         context->getListener()->notifyKey(&args);
     }
 }
 
 static void synthesizeButtonKeys(InputReaderContext* context, int32_t action,
-        nsecs_t when, int32_t deviceId, uint32_t source,
+        nsecs_t when, int32_t deviceId, uint32_t source, int32_t displayId,
         uint32_t policyFlags, int32_t lastButtonState, int32_t currentButtonState) {
-    synthesizeButtonKey(context, action, when, deviceId, source, policyFlags,
+    synthesizeButtonKey(context, action, when, deviceId, source, displayId, policyFlags,
             lastButtonState, currentButtonState,
             AMOTION_EVENT_BUTTON_BACK, AKEYCODE_BACK);
-    synthesizeButtonKey(context, action, when, deviceId, source, policyFlags,
+    synthesizeButtonKey(context, action, when, deviceId, source, displayId, policyFlags,
             lastButtonState, currentButtonState,
             AMOTION_EVENT_BUTTON_FORWARD, AKEYCODE_FORWARD);
 }
@@ -257,64 +257,32 @@
 // --- InputReaderConfiguration ---
 
 bool InputReaderConfiguration::getDisplayViewport(ViewportType viewportType,
-        const String8* uniqueDisplayId, DisplayViewport* outViewport) const {
-    const DisplayViewport* viewport = NULL;
-    if (viewportType == ViewportType::VIEWPORT_VIRTUAL && uniqueDisplayId != NULL) {
-        for (const DisplayViewport& currentViewport : mVirtualDisplays) {
-            if (currentViewport.uniqueId == *uniqueDisplayId) {
-                viewport = &currentViewport;
-                break;
+        const std::string& uniqueDisplayId, DisplayViewport* outViewport) const {
+    for (const DisplayViewport& currentViewport : mDisplays) {
+        if (currentViewport.type == viewportType) {
+            if (uniqueDisplayId.empty() ||
+                    (!uniqueDisplayId.empty() && uniqueDisplayId == currentViewport.uniqueId)) {
+                *outViewport = currentViewport;
+                return true;
             }
         }
-    } else if (viewportType == ViewportType::VIEWPORT_EXTERNAL) {
-        viewport = &mExternalDisplay;
-    } else if (viewportType == ViewportType::VIEWPORT_INTERNAL) {
-        viewport = &mInternalDisplay;
-    }
-
-    if (viewport != NULL && viewport->displayId >= 0) {
-        *outViewport = *viewport;
-        return true;
     }
     return false;
 }
 
-void InputReaderConfiguration::setPhysicalDisplayViewport(ViewportType viewportType,
-        const DisplayViewport& viewport) {
-    if (viewportType == ViewportType::VIEWPORT_EXTERNAL) {
-        mExternalDisplay = viewport;
-    } else if (viewportType == ViewportType::VIEWPORT_INTERNAL) {
-        mInternalDisplay = viewport;
-    }
-}
-
-void InputReaderConfiguration::setVirtualDisplayViewports(
-        const Vector<DisplayViewport>& viewports) {
-    mVirtualDisplays = viewports;
+void InputReaderConfiguration::setDisplayViewports(const std::vector<DisplayViewport>& viewports) {
+    mDisplays = viewports;
 }
 
 void InputReaderConfiguration::dump(std::string& dump) const {
-    dump += INDENT4 "ViewportInternal:\n";
-    dumpViewport(dump, mInternalDisplay);
-    dump += INDENT4 "ViewportExternal:\n";
-    dumpViewport(dump, mExternalDisplay);
-    dump += INDENT4 "ViewportVirtual:\n";
-    for (const DisplayViewport& viewport : mVirtualDisplays) {
+    for (const DisplayViewport& viewport : mDisplays) {
         dumpViewport(dump, viewport);
     }
 }
 
-void InputReaderConfiguration::dumpViewport(std::string& dump, const DisplayViewport& viewport) const {
-    dump += StringPrintf(INDENT5 "Viewport: displayId=%d, orientation=%d, uniqueId='%s', "
-            "logicalFrame=[%d, %d, %d, %d], "
-            "physicalFrame=[%d, %d, %d, %d], "
-            "deviceSize=[%d, %d]\n",
-            viewport.displayId, viewport.orientation, viewport.uniqueId.c_str(),
-            viewport.logicalLeft, viewport.logicalTop,
-            viewport.logicalRight, viewport.logicalBottom,
-            viewport.physicalLeft, viewport.physicalTop,
-            viewport.physicalRight, viewport.physicalBottom,
-            viewport.deviceWidth, viewport.deviceHeight);
+void InputReaderConfiguration::dumpViewport(std::string& dump, const DisplayViewport& viewport)
+        const {
+    dump += StringPrintf(INDENT4 "%s\n", viewport.toString().c_str());
 }
 
 
@@ -473,10 +441,10 @@
 
     if (device->isIgnored()) {
         ALOGI("Device added: id=%d, name='%s' (ignored non-input device)", deviceId,
-                identifier.name.string());
+                identifier.name.c_str());
     } else {
         ALOGI("Device added: id=%d, name='%s', sources=0x%08x", deviceId,
-                identifier.name.string(), device->getSources());
+                identifier.name.c_str(), device->getSources());
     }
 
     mDevices.add(deviceId, device);
@@ -488,7 +456,7 @@
 }
 
 void InputReader::removeDeviceLocked(nsecs_t when, int32_t deviceId) {
-    InputDevice* device = NULL;
+    InputDevice* device = nullptr;
     ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
     if (deviceIndex < 0) {
         ALOGW("Ignoring spurious device removed event for deviceId %d.", deviceId);
@@ -501,10 +469,10 @@
 
     if (device->isIgnored()) {
         ALOGI("Device removed: id=%d, name='%s' (ignored non-input device)",
-                device->getId(), device->getName().string());
+                device->getId(), device->getName().c_str());
     } else {
         ALOGI("Device removed: id=%d, name='%s', sources=0x%08x",
-                device->getId(), device->getName().string(), device->getSources());
+                device->getId(), device->getName().c_str(), device->getSources());
     }
 
     if (device->getClasses() & INPUT_DEVICE_CLASS_EXTERNAL_STYLUS) {
@@ -687,7 +655,7 @@
     if (now < mDisableVirtualKeysTimeout) {
         ALOGI("Dropping virtual key from device %s because virtual keys are "
                 "temporarily disabled for the next %0.3fms.  keyCode=%d, scanCode=%d",
-                device->getName().string(),
+                device->getName().c_str(),
                 (mDisableVirtualKeysTimeout - now) * 0.000001,
                 keyCode, scanCode);
         return true;
@@ -894,7 +862,7 @@
         if (i != 0) {
             dump += ", ";
         }
-        dump += mConfig.excludedDeviceNames.itemAt(i).string();
+        dump += mConfig.excludedDeviceNames[i];
     }
     dump += "]\n";
     dump += StringPrintf(INDENT2 "VirtualKeyQuietTime: %0.1fms\n",
@@ -1077,7 +1045,7 @@
     getDeviceInfo(& deviceInfo);
 
     dump += StringPrintf(INDENT "Device %d: %s\n", deviceInfo.getId(),
-            deviceInfo.getDisplayName().string());
+            deviceInfo.getDisplayName().c_str());
     dump += StringPrintf(INDENT2 "Generation: %d\n", mGeneration);
     dump += StringPrintf(INDENT2 "IsExternal: %s\n", toString(mIsExternal));
     dump += StringPrintf(INDENT2 "HasMic:     %s\n", toString(mHasMic));
@@ -1135,7 +1103,7 @@
 
         if (!changes || (changes & InputReaderConfiguration::CHANGE_DEVICE_ALIAS)) {
             if (!(mClasses & INPUT_DEVICE_CLASS_VIRTUAL)) {
-                String8 alias = mContext->getPolicy()->getDeviceAlias(mIdentifier);
+                std::string alias = mContext->getPolicy()->getDeviceAlias(mIdentifier);
                 if (mAlias != alias) {
                     mAlias = alias;
                     bumpGeneration();
@@ -1196,7 +1164,7 @@
 #endif
             }
         } else if (rawEvent->type == EV_SYN && rawEvent->code == SYN_DROPPED) {
-            ALOGI("Detected input event buffer overrun for device %s.", getName().string());
+            ALOGI("Detected input event buffer overrun for device %s.", getName().c_str());
             mDropUntilNextSync = true;
             reset(rawEvent->when);
         } else {
@@ -1786,7 +1754,7 @@
 // --- MultiTouchMotionAccumulator ---
 
 MultiTouchMotionAccumulator::MultiTouchMotionAccumulator() :
-        mCurrentSlot(-1), mSlots(NULL), mSlotCount(0), mUsingSlotsProtocol(false),
+        mCurrentSlot(-1), mSlots(nullptr), mSlotCount(0), mUsingSlotsProtocol(false),
         mHaveStylus(false), mDeviceTimestamp(0) {
 }
 
@@ -2240,8 +2208,7 @@
 
 KeyboardInputMapper::KeyboardInputMapper(InputDevice* device,
         uint32_t source, int32_t keyboardType) :
-        InputMapper(device), mSource(source),
-        mKeyboardType(keyboardType) {
+        InputMapper(device), mSource(source), mKeyboardType(keyboardType) {
 }
 
 KeyboardInputMapper::~KeyboardInputMapper() {
@@ -2251,6 +2218,20 @@
     return mSource;
 }
 
+int32_t KeyboardInputMapper::getOrientation() {
+    if (mViewport) {
+        return mViewport->orientation;
+    }
+    return DISPLAY_ORIENTATION_0;
+}
+
+int32_t KeyboardInputMapper::getDisplayId() {
+    if (mViewport) {
+        return mViewport->displayId;
+    }
+    return ADISPLAY_ID_NONE;
+}
+
 void KeyboardInputMapper::populateDeviceInfo(InputDeviceInfo* info) {
     InputMapper::populateDeviceInfo(info);
 
@@ -2262,7 +2243,7 @@
     dump += INDENT2 "Keyboard Input Mapper:\n";
     dumpParameters(dump);
     dump += StringPrintf(INDENT3 "KeyboardType: %d\n", mKeyboardType);
-    dump += StringPrintf(INDENT3 "Orientation: %d\n", mOrientation);
+    dump += StringPrintf(INDENT3 "Orientation: %d\n", getOrientation());
     dump += StringPrintf(INDENT3 "KeyDowns: %zu keys currently down\n", mKeyDowns.size());
     dump += StringPrintf(INDENT3 "MetaState: 0x%0x\n", mMetaState);
     dump += StringPrintf(INDENT3 "DownTime: %" PRId64 "\n", mDownTime);
@@ -2279,15 +2260,10 @@
     }
 
     if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
-        if (mParameters.orientationAware && mParameters.hasAssociatedDisplay) {
-            DisplayViewport v;
-            if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, NULL, &v)) {
-                mOrientation = v.orientation;
-            } else {
-                mOrientation = DISPLAY_ORIENTATION_0;
-            }
-        } else {
-            mOrientation = DISPLAY_ORIENTATION_0;
+        if (mParameters.orientationAware) {
+            DisplayViewport dvp;
+            config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "", &dvp);
+            mViewport = dvp;
         }
     }
 }
@@ -2310,10 +2286,7 @@
     config.tryGetProperty(String8("keyboard.orientationAware"),
             mParameters.orientationAware);
 
-    mParameters.hasAssociatedDisplay = false;
     if (mParameters.orientationAware) {
-        mParameters.hasAssociatedDisplay = true;
-
         mapStemKey(AKEYCODE_STEM_PRIMARY, config, "keyboard.rotated.stem_primary");
         mapStemKey(AKEYCODE_STEM_1, config, "keyboard.rotated.stem_1");
         mapStemKey(AKEYCODE_STEM_2, config, "keyboard.rotated.stem_2");
@@ -2327,8 +2300,6 @@
 
 void KeyboardInputMapper::dumpParameters(std::string& dump) {
     dump += INDENT3 "Parameters:\n";
-    dump += StringPrintf(INDENT4 "HasAssociatedDisplay: %s\n",
-            toString(mParameters.hasAssociatedDisplay));
     dump += StringPrintf(INDENT4 "OrientationAware: %s\n",
             toString(mParameters.orientationAware));
     dump += StringPrintf(INDENT4 "HandlesKeyRepeat: %s\n",
@@ -2423,8 +2394,8 @@
 
     if (down) {
         // Rotate key codes according to orientation if needed.
-        if (mParameters.orientationAware && mParameters.hasAssociatedDisplay) {
-            keyCode = rotateKeyCode(keyCode, mOrientation);
+        if (mParameters.orientationAware) {
+            keyCode = rotateKeyCode(keyCode, getOrientation());
         }
 
         // Add key down.
@@ -2461,7 +2432,7 @@
             // key was not actually down
             ALOGI("Dropping key up from device %s because the key was not down.  "
                     "keyCode=%d, scanCode=%d",
-                    getDeviceName().string(), keyCode, scanCode);
+                    getDeviceName().c_str(), keyCode, scanCode);
             return;
         }
     }
@@ -2489,7 +2460,7 @@
         policyFlags |= POLICY_FLAG_DISABLE_KEY_REPEAT;
     }
 
-    NotifyKeyArgs args(when, getDeviceId(), mSource, policyFlags,
+    NotifyKeyArgs args(when, getDeviceId(), mSource, getDisplayId(), policyFlags,
             down ? AKEY_EVENT_ACTION_DOWN : AKEY_EVENT_ACTION_UP,
             AKEY_EVENT_FLAG_FROM_SYSTEM, keyCode, scanCode, keyMetaState, downTime);
     getListener()->notifyKey(&args);
@@ -2699,15 +2670,12 @@
     }
 
     if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+        mOrientation = DISPLAY_ORIENTATION_0;
         if (mParameters.orientationAware && mParameters.hasAssociatedDisplay) {
             DisplayViewport v;
-            if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, NULL, &v)) {
+            if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "", &v)) {
                 mOrientation = v.orientation;
-            } else {
-                mOrientation = DISPLAY_ORIENTATION_0;
             }
-        } else {
-            mOrientation = DISPLAY_ORIENTATION_0;
         }
         bumpGeneration();
     }
@@ -2826,8 +2794,8 @@
     float hscroll = mCursorScrollAccumulator.getRelativeHWheel();
     bool scrolled = vscroll != 0 || hscroll != 0;
 
-    mWheelYVelocityControl.move(when, NULL, &vscroll);
-    mWheelXVelocityControl.move(when, &hscroll, NULL);
+    mWheelYVelocityControl.move(when, nullptr, &vscroll);
+    mWheelXVelocityControl.move(when, &hscroll, nullptr);
 
     mPointerVelocityControl.move(when, &deltaX, &deltaY);
 
@@ -2874,7 +2842,7 @@
 
     // Synthesize key down from buttons if needed.
     synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_DOWN, when, getDeviceId(), mSource,
-            policyFlags, lastButtonState, currentButtonState);
+            displayId, policyFlags, lastButtonState, currentButtonState);
 
     // Send motion event.
     if (downChanged || moved || scrolled || buttonsChanged) {
@@ -2894,19 +2862,19 @@
             while (!released.isEmpty()) {
                 int32_t actionButton = BitSet32::valueForBit(released.clearFirstMarkedBit());
                 buttonState &= ~actionButton;
-                NotifyMotionArgs releaseArgs(when, getDeviceId(), mSource, policyFlags,
+                NotifyMotionArgs releaseArgs(when, getDeviceId(), mSource, displayId, policyFlags,
                         AMOTION_EVENT_ACTION_BUTTON_RELEASE, actionButton, 0,
                         metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-                        displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                        /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                         mXPrecision, mYPrecision, downTime);
                 getListener()->notifyMotion(&releaseArgs);
             }
         }
 
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, displayId, policyFlags,
                 motionEventAction, 0, 0, metaState, currentButtonState,
                 AMOTION_EVENT_EDGE_FLAG_NONE,
-                displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                 mXPrecision, mYPrecision, downTime);
         getListener()->notifyMotion(&args);
 
@@ -2915,10 +2883,10 @@
             while (!pressed.isEmpty()) {
                 int32_t actionButton = BitSet32::valueForBit(pressed.clearFirstMarkedBit());
                 buttonState |= actionButton;
-                NotifyMotionArgs pressArgs(when, getDeviceId(), mSource, policyFlags,
+                NotifyMotionArgs pressArgs(when, getDeviceId(), mSource, displayId, policyFlags,
                         AMOTION_EVENT_ACTION_BUTTON_PRESS, actionButton, 0,
                         metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-                        displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                        /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                         mXPrecision, mYPrecision, downTime);
                 getListener()->notifyMotion(&pressArgs);
             }
@@ -2929,10 +2897,10 @@
         // Send hover move after UP to tell the application that the mouse is hovering now.
         if (motionEventAction == AMOTION_EVENT_ACTION_UP
                 && (mSource == AINPUT_SOURCE_MOUSE)) {
-            NotifyMotionArgs hoverArgs(when, getDeviceId(), mSource, policyFlags,
+            NotifyMotionArgs hoverArgs(when, getDeviceId(), mSource, displayId, policyFlags,
                     AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0,
                     metaState, currentButtonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-                    displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                    /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                     mXPrecision, mYPrecision, downTime);
             getListener()->notifyMotion(&hoverArgs);
         }
@@ -2942,10 +2910,10 @@
             pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_VSCROLL, vscroll);
             pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_HSCROLL, hscroll);
 
-            NotifyMotionArgs scrollArgs(when, getDeviceId(), mSource, policyFlags,
+            NotifyMotionArgs scrollArgs(when, getDeviceId(), mSource, displayId, policyFlags,
                     AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState, currentButtonState,
                     AMOTION_EVENT_EDGE_FLAG_NONE,
-                    displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                    /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                     mXPrecision, mYPrecision, downTime);
             getListener()->notifyMotion(&scrollArgs);
         }
@@ -2953,7 +2921,7 @@
 
     // Synthesize key up from buttons if needed.
     synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_UP, when, getDeviceId(), mSource,
-            policyFlags, lastButtonState, currentButtonState);
+            displayId, policyFlags, lastButtonState, currentButtonState);
 
     mCursorMotionAccumulator.finishSync();
     mCursorScrollAccumulator.finishSync();
@@ -2968,7 +2936,7 @@
 }
 
 void CursorInputMapper::fadePointer() {
-    if (mPointerController != NULL) {
+    if (mPointerController != nullptr) {
         mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL);
     }
 }
@@ -3020,7 +2988,7 @@
     }
     if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
         DisplayViewport v;
-        if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, NULL, &v)) {
+        if (config->getDisplayViewport(ViewportType::VIEWPORT_INTERNAL, "", &v)) {
             mOrientation = v.orientation;
         } else {
             mOrientation = DISPLAY_ORIENTATION_0;
@@ -3072,10 +3040,10 @@
         int32_t metaState = mContext->getGlobalMetaState();
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_SCROLL, scroll * mScalingFactor);
 
-        NotifyMotionArgs scrollArgs(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs scrollArgs(when, getDeviceId(), mSource, displayId, policyFlags,
                 AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState, 0,
                 AMOTION_EVENT_EDGE_FLAG_NONE,
-                displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                 0, 0, 0);
         getListener()->notifyMotion(&scrollArgs);
     }
@@ -3394,8 +3362,10 @@
         mParameters.hasAssociatedDisplay = true;
         if (mParameters.deviceType == Parameters::DEVICE_TYPE_TOUCH_SCREEN) {
             mParameters.associatedDisplayIsExternal = getDevice()->isExternal();
+            String8 uniqueDisplayId;
             getDevice()->getConfiguration().tryGetProperty(String8("touch.displayId"),
-                    mParameters.uniqueDisplayId);
+                    uniqueDisplayId);
+            mParameters.uniqueDisplayId = uniqueDisplayId.c_str();
         }
     }
 
@@ -3506,7 +3476,7 @@
     // Ensure we have valid X and Y axes.
     if (!mRawPointerAxes.x.valid || !mRawPointerAxes.y.valid) {
         ALOGW(INDENT "Touch device '%s' did not report support for X or Y axis!  "
-                "The device will be inoperable.", getDeviceName().string());
+                "The device will be inoperable.", getDeviceName().c_str());
         mDeviceMode = DEVICE_MODE_DISABLED;
         return;
     }
@@ -3518,15 +3488,15 @@
     // Get associated display dimensions.
     DisplayViewport newViewport;
     if (mParameters.hasAssociatedDisplay) {
-        const String8* uniqueDisplayId = NULL;
+        std::string uniqueDisplayId;
         ViewportType viewportTypeToUse;
 
         if (mParameters.associatedDisplayIsExternal) {
             viewportTypeToUse = ViewportType::VIEWPORT_EXTERNAL;
-        } else if (!mParameters.uniqueDisplayId.isEmpty()) {
+        } else if (!mParameters.uniqueDisplayId.empty()) {
             // If the IDC file specified a unique display Id, then it expects to be linked to a
             // virtual display with the same unique ID.
-            uniqueDisplayId = &mParameters.uniqueDisplayId;
+            uniqueDisplayId = mParameters.uniqueDisplayId;
             viewportTypeToUse = ViewportType::VIEWPORT_VIRTUAL;
         } else {
             viewportTypeToUse = ViewportType::VIEWPORT_INTERNAL;
@@ -3536,7 +3506,7 @@
             ALOGI(INDENT "Touch device '%s' could not query the properties of its associated "
                     "display.  The device will be inoperable until the display size "
                     "becomes available.",
-                    getDeviceName().string());
+                    getDeviceName().c_str());
             mDeviceMode = DEVICE_MODE_DISABLED;
             return;
         }
@@ -3597,6 +3567,12 @@
                 break;
             }
 
+            if (naturalPhysicalHeight == 0 || naturalPhysicalWidth == 0) {
+                ALOGE("Viewport is not set properly: %s", mViewport.toString().c_str());
+                naturalPhysicalHeight = naturalPhysicalHeight == 0 ? 1 : naturalPhysicalHeight;
+                naturalPhysicalWidth = naturalPhysicalWidth == 0 ? 1 : naturalPhysicalWidth;
+            }
+
             mPhysicalWidth = naturalPhysicalWidth;
             mPhysicalHeight = naturalPhysicalHeight;
             mPhysicalLeft = naturalPhysicalLeft;
@@ -3632,7 +3608,7 @@
     // Create pointer controller if needed.
     if (mDeviceMode == DEVICE_MODE_POINTER ||
             (mDeviceMode == DEVICE_MODE_DIRECT && mConfig.showTouches)) {
-        if (mPointerController == NULL) {
+        if (mPointerController == nullptr) {
             mPointerController = getPolicy()->obtainPointerController(getDeviceId());
         }
     } else {
@@ -3642,7 +3618,7 @@
     if (viewportChanged || deviceModeChanged) {
         ALOGI("Device reconfigured: id=%d, name='%s', size %dx%d, orientation %d, mode %d, "
                 "display id %d",
-                getDeviceId(), getDeviceName().string(), mSurfaceWidth, mSurfaceHeight,
+                getDeviceId(), getDeviceName().c_str(), mSurfaceWidth, mSurfaceHeight,
                 mSurfaceOrientation, mDeviceMode, mViewport.displayId);
 
         // Configure X and Y factors.
@@ -3910,17 +3886,7 @@
 }
 
 void TouchInputMapper::dumpSurface(std::string& dump) {
-    dump += StringPrintf(INDENT3 "Viewport: displayId=%d, orientation=%d, "
-            "logicalFrame=[%d, %d, %d, %d], "
-            "physicalFrame=[%d, %d, %d, %d], "
-            "deviceSize=[%d, %d]\n",
-            mViewport.displayId, mViewport.orientation,
-            mViewport.logicalLeft, mViewport.logicalTop,
-            mViewport.logicalRight, mViewport.logicalBottom,
-            mViewport.physicalLeft, mViewport.physicalTop,
-            mViewport.physicalRight, mViewport.physicalBottom,
-            mViewport.deviceWidth, mViewport.deviceHeight);
-
+    dump += StringPrintf(INDENT3 "%s\n", mViewport.toString().c_str());
     dump += StringPrintf(INDENT3 "SurfaceWidth: %dpx\n", mSurfaceWidth);
     dump += StringPrintf(INDENT3 "SurfaceHeight: %dpx\n", mSurfaceHeight);
     dump += StringPrintf(INDENT3 "SurfaceLeft: %d\n", mSurfaceLeft);
@@ -4286,7 +4252,7 @@
     mPointerSimple.reset();
     resetExternalStylus();
 
-    if (mPointerController != NULL) {
+    if (mPointerController != nullptr) {
         mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL);
         mPointerController->clearSpots();
     }
@@ -4448,7 +4414,8 @@
 
     // Synthesize key down from raw buttons if needed.
     synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_DOWN, when, getDeviceId(), mSource,
-            policyFlags, mLastCookedState.buttonState, mCurrentCookedState.buttonState);
+            mViewport.displayId, policyFlags,
+            mLastCookedState.buttonState, mCurrentCookedState.buttonState);
 
     // Dispatch the touches either directly or by translation through a pointer on screen.
     if (mDeviceMode == DEVICE_MODE_POINTER) {
@@ -4495,7 +4462,7 @@
         dispatchPointerUsage(when, policyFlags, pointerUsage);
     } else {
         if (mDeviceMode == DEVICE_MODE_DIRECT
-                && mConfig.showTouches && mPointerController != NULL) {
+                && mConfig.showTouches && mPointerController != nullptr) {
             mPointerController->setPresentation(PointerControllerInterface::PRESENTATION_SPOT);
             mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL);
 
@@ -4520,7 +4487,8 @@
 
     // Synthesize key up from raw buttons if needed.
     synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_UP, when, getDeviceId(), mSource,
-            policyFlags, mLastCookedState.buttonState, mCurrentCookedState.buttonState);
+            mViewport.displayId, policyFlags,
+            mLastCookedState.buttonState, mCurrentCookedState.buttonState);
 
     // Clear some transient state.
     mCurrentRawState.rawVScroll = 0;
@@ -4735,8 +4703,8 @@
     int32_t metaState = mContext->getGlobalMetaState();
     policyFlags |= POLICY_FLAG_VIRTUAL;
 
-    NotifyKeyArgs args(when, getDeviceId(), AINPUT_SOURCE_KEYBOARD, policyFlags,
-            keyEventAction, keyEventFlags, keyCode, scanCode, metaState, downTime);
+    NotifyKeyArgs args(when, getDeviceId(), AINPUT_SOURCE_KEYBOARD, mViewport.displayId,
+            policyFlags, keyEventAction, keyEventFlags, keyCode, scanCode, metaState, downTime);
     getListener()->notifyKey(&args);
 }
 
@@ -5428,10 +5396,10 @@
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_X, x);
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, y);
 
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                 AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0,
                 metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-                mViewport.displayId, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+                /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
                 0, 0, mPointerGesture.downTime);
         getListener()->notifyMotion(&args);
     }
@@ -5473,7 +5441,7 @@
     mPointerVelocityControl.reset();
 
     // Remove any current spots.
-    if (mPointerController != NULL) {
+    if (mPointerController != nullptr) {
         mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL);
         mPointerController->clearSpots();
     }
@@ -6336,7 +6304,7 @@
         bool down, bool hovering) {
     int32_t metaState = getContext()->getGlobalMetaState();
 
-    if (mPointerController != NULL) {
+    if (mPointerController != nullptr) {
         if (down || hovering) {
             mPointerController->setPresentation(PointerControllerInterface::PRESENTATION_POINTER);
             mPointerController->clearSpots();
@@ -6351,9 +6319,9 @@
         mPointerSimple.down = false;
 
         // Send up.
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                  AMOTION_EVENT_ACTION_UP, 0, 0, metaState, mLastRawState.buttonState, 0,
-                 mViewport.displayId, /* deviceTimestamp */ 0,
+                 /* deviceTimestamp */ 0,
                  1, &mPointerSimple.lastProperties, &mPointerSimple.lastCoords,
                  mOrientedXPrecision, mOrientedYPrecision,
                  mPointerSimple.downTime);
@@ -6364,9 +6332,9 @@
         mPointerSimple.hovering = false;
 
         // Send hover exit.
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                 AMOTION_EVENT_ACTION_HOVER_EXIT, 0, 0, metaState, mLastRawState.buttonState, 0,
-                mViewport.displayId, /* deviceTimestamp */ 0,
+                /* deviceTimestamp */ 0,
                 1, &mPointerSimple.lastProperties, &mPointerSimple.lastCoords,
                 mOrientedXPrecision, mOrientedYPrecision,
                 mPointerSimple.downTime);
@@ -6379,9 +6347,9 @@
             mPointerSimple.downTime = when;
 
             // Send down.
-            NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+            NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                     AMOTION_EVENT_ACTION_DOWN, 0, 0, metaState, mCurrentRawState.buttonState, 0,
-                    mViewport.displayId, /* deviceTimestamp */ 0,
+                    /* deviceTimestamp */ 0,
                     1, &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
                     mOrientedXPrecision, mOrientedYPrecision,
                     mPointerSimple.downTime);
@@ -6389,9 +6357,9 @@
         }
 
         // Send move.
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                 AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState, mCurrentRawState.buttonState, 0,
-                mViewport.displayId, /* deviceTimestamp */ 0,
+                /* deviceTimestamp */ 0,
                 1, &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
                 mOrientedXPrecision, mOrientedYPrecision,
                 mPointerSimple.downTime);
@@ -6403,10 +6371,10 @@
             mPointerSimple.hovering = true;
 
             // Send hover enter.
-            NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+            NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                     AMOTION_EVENT_ACTION_HOVER_ENTER, 0, 0, metaState,
                     mCurrentRawState.buttonState, 0,
-                    mViewport.displayId, /* deviceTimestamp */ 0,
+                    /* deviceTimestamp */ 0,
                     1, &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
                     mOrientedXPrecision, mOrientedYPrecision,
                     mPointerSimple.downTime);
@@ -6414,10 +6382,10 @@
         }
 
         // Send hover move.
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                 AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0, metaState,
                 mCurrentRawState.buttonState, 0,
-                mViewport.displayId, /* deviceTimestamp */ 0,
+                /* deviceTimestamp */ 0,
                 1, &mPointerSimple.currentProperties, &mPointerSimple.currentCoords,
                 mOrientedXPrecision, mOrientedYPrecision,
                 mPointerSimple.downTime);
@@ -6427,8 +6395,8 @@
     if (mCurrentRawState.rawVScroll || mCurrentRawState.rawHScroll) {
         float vscroll = mCurrentRawState.rawVScroll;
         float hscroll = mCurrentRawState.rawHScroll;
-        mWheelYVelocityControl.move(when, NULL, &vscroll);
-        mWheelXVelocityControl.move(when, &hscroll, NULL);
+        mWheelYVelocityControl.move(when, nullptr, &vscroll);
+        mWheelXVelocityControl.move(when, &hscroll, nullptr);
 
         // Send scroll.
         PointerCoords pointerCoords;
@@ -6436,9 +6404,9 @@
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_VSCROLL, vscroll);
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_HSCROLL, hscroll);
 
-        NotifyMotionArgs args(when, getDeviceId(), mSource, policyFlags,
+        NotifyMotionArgs args(when, getDeviceId(), mSource, mViewport.displayId, policyFlags,
                 AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState, mCurrentRawState.buttonState, 0,
-                mViewport.displayId, /* deviceTimestamp */ 0,
+                /* deviceTimestamp */ 0,
                 1, &mPointerSimple.currentProperties, &pointerCoords,
                 mOrientedXPrecision, mOrientedYPrecision,
                 mPointerSimple.downTime);
@@ -6499,9 +6467,9 @@
         }
     }
 
-    NotifyMotionArgs args(when, getDeviceId(), source, policyFlags,
+    NotifyMotionArgs args(when, getDeviceId(), source, mViewport.displayId, policyFlags,
             action, actionButton, flags, metaState, buttonState, edgeFlags,
-            mViewport.displayId, deviceTimestamp, pointerCount, pointerProperties, pointerCoords,
+            deviceTimestamp, pointerCount, pointerProperties, pointerCoords,
             xPrecision, yPrecision, downTime);
     getListener()->notifyMotion(&args);
 }
@@ -6535,7 +6503,7 @@
 }
 
 void TouchInputMapper::fadePointer() {
-    if (mPointerController != NULL) {
+    if (mPointerController != nullptr) {
         mPointerController->fade(PointerControllerInterface::TRANSITION_GRADUAL);
     }
 }
@@ -6574,7 +6542,7 @@
         }
     }
 
-    return NULL;
+    return nullptr;
 }
 
 void TouchInputMapper::assignPointerIds(const RawState* last, RawState* current) {
@@ -6923,7 +6891,7 @@
 #if DEBUG_POINTERS
             ALOGD("MultiTouch device %s emitted more than maximum of %d pointers; "
                     "ignoring the rest.",
-                    getDeviceName().string(), MAX_POINTERS);
+                    getDeviceName().c_str(), MAX_POINTERS);
 #endif
             break; // too many fingers!
         }
@@ -7014,7 +6982,7 @@
         if (slotCount > MAX_SLOTS) {
             ALOGW("MultiTouch Device %s reported %zu slots but the framework "
                     "only supports a maximum of %zu slots at this time.",
-                    getDeviceName().string(), slotCount, MAX_SLOTS);
+                    getDeviceName().c_str(), slotCount, MAX_SLOTS);
             slotCount = MAX_SLOTS;
         }
         mMultiTouchMotionAccumulator.configure(getDevice(),
@@ -7257,7 +7225,7 @@
         // Prefer to keep explicitly mapped axes.
         if (mAxes.size() > PointerCoords::MAX_AXES) {
             ALOGI("Joystick '%s' has %zu axes but the framework only supports a maximum of %d.",
-                    getDeviceName().string(), mAxes.size(), PointerCoords::MAX_AXES);
+                    getDeviceName().c_str(), mAxes.size(), PointerCoords::MAX_AXES);
             pruneAxes(true);
             pruneAxes(false);
         }
@@ -7279,7 +7247,7 @@
                 } else {
                     ALOGI("Ignoring joystick '%s' axis %d because all of the generic axis ids "
                             "have already been assigned to other axes.",
-                            getDeviceName().string(), mAxes.keyAt(i));
+                            getDeviceName().c_str(), mAxes.keyAt(i));
                     mAxes.removeItemsAt(i--);
                     numAxes -= 1;
                 }
@@ -7308,7 +7276,7 @@
             continue;
         }
         ALOGI("Discarding joystick '%s' axis %d because there are too many axes.",
-                getDeviceName().string(), mAxes.keyAt(i));
+                getDeviceName().c_str(), mAxes.keyAt(i));
         mAxes.removeItemsAt(i);
     }
 }
@@ -7423,9 +7391,10 @@
     // TODO: Use the input device configuration to control this behavior more finely.
     uint32_t policyFlags = 0;
 
-    NotifyMotionArgs args(when, getDeviceId(), AINPUT_SOURCE_JOYSTICK, policyFlags,
+    NotifyMotionArgs args(when, getDeviceId(), AINPUT_SOURCE_JOYSTICK, ADISPLAY_ID_NONE,
+            policyFlags,
             AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
-            ADISPLAY_ID_NONE, /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
+            /* deviceTimestamp */ 0, 1, &pointerProperties, &pointerCoords,
             0, 0, 0);
     getListener()->notifyMotion(&args);
 }
diff --git a/services/inputflinger/InputReader.h b/services/inputflinger/InputReader.h
index 2f98e69..74668b7 100644
--- a/services/inputflinger/InputReader.h
+++ b/services/inputflinger/InputReader.h
@@ -35,8 +35,10 @@
 #include <utils/BitSet.h>
 #include <utils/SortedVector.h>
 
+#include <optional>
 #include <stddef.h>
 #include <unistd.h>
+#include <vector>
 
 // Maximum supported size of a vibration pattern.
 // Must be at least 2.
@@ -100,7 +102,7 @@
 
     // The excluded device names for the platform.
     // Devices with these names will be ignored.
-    Vector<String8> excludedDeviceNames;
+    std::vector<std::string> excludedDeviceNames;
 
     // Velocity control parameters for mouse pointer movements.
     VelocityControlParameters pointerVelocityControlParameters;
@@ -200,19 +202,16 @@
             pointerGestureZoomSpeedRatio(0.3f),
             showTouches(false) { }
 
-    bool getDisplayViewport(ViewportType viewportType, const String8* displayId,
+    bool getDisplayViewport(ViewportType viewportType, const std::string& uniqueDisplayId,
             DisplayViewport* outViewport) const;
-    void setPhysicalDisplayViewport(ViewportType viewportType, const DisplayViewport& viewport);
-    void setVirtualDisplayViewports(const Vector<DisplayViewport>& viewports);
+    void setDisplayViewports(const std::vector<DisplayViewport>& viewports);
 
 
     void dump(std::string& dump) const;
     void dumpViewport(std::string& dump, const DisplayViewport& viewport) const;
 
 private:
-    DisplayViewport mInternalDisplay;
-    DisplayViewport mExternalDisplay;
-    Vector<DisplayViewport> mVirtualDisplays;
+    std::vector<DisplayViewport> mDisplays;
 };
 
 
@@ -273,11 +272,11 @@
             const InputDeviceIdentifier& identifier) = 0;
 
     /* Gets a user-supplied alias for a particular input device, or an empty string if none. */
-    virtual String8 getDeviceAlias(const InputDeviceIdentifier& identifier) = 0;
+    virtual std::string getDeviceAlias(const InputDeviceIdentifier& identifier) = 0;
 
     /* Gets the affine calibration associated with the specified device. */
     virtual TouchAffineTransformation getTouchAffineTransformation(
-            const String8& inputDeviceDescriptor, int32_t surfaceRotation) = 0;
+            const std::string& inputDeviceDescriptor, int32_t surfaceRotation) = 0;
 };
 
 
@@ -552,8 +551,8 @@
     inline int32_t getId() const { return mId; }
     inline int32_t getControllerNumber() const { return mControllerNumber; }
     inline int32_t getGeneration() const { return mGeneration; }
-    inline const String8& getName() const { return mIdentifier.name; }
-    inline const String8& getDescriptor() { return mIdentifier.descriptor; }
+    inline const std::string getName() const { return mIdentifier.name; }
+    inline const std::string getDescriptor() { return mIdentifier.descriptor; }
     inline uint32_t getClasses() const { return mClasses; }
     inline uint32_t getSources() const { return mSources; }
 
@@ -624,7 +623,7 @@
     int32_t mGeneration;
     int32_t mControllerNumber;
     InputDeviceIdentifier mIdentifier;
-    String8 mAlias;
+    std::string mAlias;
     uint32_t mClasses;
 
     Vector<InputMapper*> mMappers;
@@ -980,7 +979,7 @@
 
     inline InputDevice* getDevice() { return mDevice; }
     inline int32_t getDeviceId() { return mDevice->getId(); }
-    inline const String8 getDeviceName() { return mDevice->getName(); }
+    inline const std::string getDeviceName() { return mDevice->getName(); }
     inline InputReaderContext* getContext() { return mContext; }
     inline InputReaderPolicyInterface* getPolicy() { return mContext->getPolicy(); }
     inline InputListenerInterface* getListener() { return mContext->getListener(); }
@@ -1094,6 +1093,9 @@
     virtual void updateMetaState(int32_t keyCode);
 
 private:
+    // The current viewport.
+    std::optional<DisplayViewport> mViewport;
+
     struct KeyDown {
         int32_t keyCode;
         int32_t scanCode;
@@ -1102,8 +1104,6 @@
     uint32_t mSource;
     int32_t mKeyboardType;
 
-    int32_t mOrientation; // orientation for dpad keys
-
     Vector<KeyDown> mKeyDowns; // keys that are down
     int32_t mMetaState;
     nsecs_t mDownTime; // time of most recent key down
@@ -1120,7 +1120,6 @@
 
     // Immutable configuration parameters.
     struct Parameters {
-        bool hasAssociatedDisplay;
         bool orientationAware;
         bool handlesKeyRepeat;
     } mParameters;
@@ -1128,6 +1127,9 @@
     void configureParameters();
     void dumpParameters(std::string& dump);
 
+    int32_t getOrientation();
+    int32_t getDisplayId();
+
     bool isKeyboardOrGamepadKey(int32_t scanCode);
     bool isMediaKey(int32_t keyCode);
 
@@ -1305,7 +1307,7 @@
         bool associatedDisplayIsExternal;
         bool orientationAware;
         bool hasButtonUnderPad;
-        String8 uniqueDisplayId;
+        std::string uniqueDisplayId;
 
         enum GestureMode {
             GESTURE_MODE_SINGLE_TOUCH,
diff --git a/services/inputflinger/InputWindow.cpp b/services/inputflinger/InputWindow.cpp
deleted file mode 100644
index 3ae7972..0000000
--- a/services/inputflinger/InputWindow.cpp
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "InputWindow"
-#define LOG_NDEBUG 0
-
-#include "InputWindow.h"
-
-#include <log/log.h>
-
-#include <ui/Rect.h>
-#include <ui/Region.h>
-
-namespace android {
-
-// --- InputWindowInfo ---
-void InputWindowInfo::addTouchableRegion(const Rect& region) {
-    touchableRegion.orSelf(region);
-}
-
-bool InputWindowInfo::touchableRegionContainsPoint(int32_t x, int32_t y) const {
-    return touchableRegion.contains(x,y);
-}
-
-bool InputWindowInfo::frameContainsPoint(int32_t x, int32_t y) const {
-    return x >= frameLeft && x < frameRight
-            && y >= frameTop && y < frameBottom;
-}
-
-bool InputWindowInfo::isTrustedOverlay() const {
-    return layoutParamsType == TYPE_INPUT_METHOD
-            || layoutParamsType == TYPE_INPUT_METHOD_DIALOG
-            || layoutParamsType == TYPE_MAGNIFICATION_OVERLAY
-            || layoutParamsType == TYPE_STATUS_BAR
-            || layoutParamsType == TYPE_NAVIGATION_BAR
-            || layoutParamsType == TYPE_NAVIGATION_BAR_PANEL
-            || layoutParamsType == TYPE_SECURE_SYSTEM_OVERLAY
-            || layoutParamsType == TYPE_DOCK_DIVIDER
-            || layoutParamsType == TYPE_ACCESSIBILITY_OVERLAY
-            || layoutParamsType == TYPE_INPUT_CONSUMER;
-}
-
-bool InputWindowInfo::supportsSplitTouch() const {
-    return layoutParamsFlags & FLAG_SPLIT_TOUCH;
-}
-
-bool InputWindowInfo::overlaps(const InputWindowInfo* other) const {
-    return frameLeft < other->frameRight && frameRight > other->frameLeft
-            && frameTop < other->frameBottom && frameBottom > other->frameTop;
-}
-
-
-// --- InputWindowHandle ---
-
-InputWindowHandle::InputWindowHandle(const sp<InputApplicationHandle>& inputApplicationHandle) :
-    inputApplicationHandle(inputApplicationHandle), mInfo(NULL) {
-}
-
-InputWindowHandle::~InputWindowHandle() {
-    delete mInfo;
-}
-
-void InputWindowHandle::releaseInfo() {
-    if (mInfo) {
-        delete mInfo;
-        mInfo = NULL;
-    }
-}
-
-} // namespace android
diff --git a/services/inputflinger/host/InputDriver.cpp b/services/inputflinger/host/InputDriver.cpp
index bd11d56..2f046c3 100644
--- a/services/inputflinger/host/InputDriver.cpp
+++ b/services/inputflinger/host/InputDriver.cpp
@@ -217,18 +217,18 @@
     idi.product = id->productId;
     idi.version = id->version;
 
-    String8 configFile = getInputDeviceConfigurationFilePathByDeviceIdentifier(
+    std::string configFile = getInputDeviceConfigurationFilePathByDeviceIdentifier(
             idi, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_CONFIGURATION);
-    if (configFile.isEmpty()) {
+    if (configFile.empty()) {
         ALOGD("No input device configuration file found for device '%s'.",
-                idi.name.string());
+                idi.name.c_str());
     } else {
         auto propMap = new input_property_map_t();
-        status_t status = PropertyMap::load(configFile, &propMap->propertyMap);
+        status_t status = PropertyMap::load(String8(configFile.c_str()), &propMap->propertyMap);
         if (status) {
             ALOGE("Error loading input device configuration file for device '%s'. "
                     "Using default configuration.",
-                    idi.name.string());
+                    idi.name.c_str());
             delete propMap;
             return nullptr;
         }
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index afaf139..517e639 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -2,6 +2,7 @@
 
 cc_test {
     name: "inputflinger_tests",
+    cpp_std: "c++17",
     srcs: [
         "InputReader_test.cpp",
         "InputDispatcher_test.cpp",
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index aa6df24..2bbfb1b 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -28,7 +28,7 @@
 static const int32_t DEVICE_ID = 1;
 
 // An arbitrary display id.
-static const int32_t DISPLAY_ID = 0;
+static const int32_t DISPLAY_ID = ADISPLAY_ID_DEFAULT;
 
 // An arbitrary injector pid / uid pair that has permission to inject events.
 static const int32_t INJECTOR_PID = 999;
@@ -103,13 +103,20 @@
 protected:
     sp<FakeInputDispatcherPolicy> mFakePolicy;
     sp<InputDispatcher> mDispatcher;
+    sp<InputDispatcherThread> mDispatcherThread;
 
     virtual void SetUp() {
         mFakePolicy = new FakeInputDispatcherPolicy();
         mDispatcher = new InputDispatcher(mFakePolicy);
+        mDispatcher->setInputDispatchMode(/*enabled*/ true, /*frozen*/ false);
+        //Start InputDispatcher thread
+        mDispatcherThread = new InputDispatcherThread(mDispatcher);
+        mDispatcherThread->run("InputDispatcherTest", PRIORITY_URGENT_DISPLAY);
     }
 
     virtual void TearDown() {
+        mDispatcherThread->requestExit();
+        mDispatcherThread.clear();
         mFakePolicy.clear();
         mDispatcher.clear();
     }
@@ -120,20 +127,20 @@
     KeyEvent event;
 
     // Rejects undefined key actions.
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD, ADISPLAY_ID_NONE,
             /*action*/ -1, 0,
             AKEYCODE_A, KEY_A, AMETA_NONE, 0, ARBITRARY_TIME, ARBITRARY_TIME);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject key events with undefined action.";
 
     // Rejects ACTION_MULTIPLE since it is not supported despite being defined in the API.
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD, ADISPLAY_ID_NONE,
             AKEY_EVENT_ACTION_MULTIPLE, 0,
             AKEYCODE_A, KEY_A, AMETA_NONE, 0, ARBITRARY_TIME, ARBITRARY_TIME);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject key events with ACTION_MULTIPLE.";
 }
@@ -149,108 +156,414 @@
     }
 
     // Rejects undefined motion actions.
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             /*action*/ -1, 0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with undefined action.";
 
     // Rejects pointer down with invalid index.
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_POINTER_DOWN | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
             0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with pointer down index too large.";
 
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_POINTER_DOWN | (~0U << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
             0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with pointer down index too small.";
 
     // Rejects pointer up with invalid index.
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_POINTER_UP | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
             0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with pointer up index too large.";
 
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_POINTER_UP | (~0U << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
             0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with pointer up index too small.";
 
     // Rejects motion events with invalid number of pointers.
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_DOWN, 0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 0, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with 0 pointers.";
 
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_DOWN, 0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ MAX_POINTERS + 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with more than MAX_POINTERS pointers.";
 
     // Rejects motion events with invalid pointer ids.
     pointerProperties[0].id = -1;
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_DOWN, 0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with pointer ids less than 0.";
 
     pointerProperties[0].id = MAX_POINTER_ID + 1;
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_DOWN, 0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 1, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with pointer ids greater than MAX_POINTER_ID.";
 
     // Rejects motion events with duplicate pointer ids.
     pointerProperties[0].id = 1;
     pointerProperties[1].id = 1;
-    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN,
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, DISPLAY_ID,
             AMOTION_EVENT_ACTION_DOWN, 0, 0, 0, AMETA_NONE, 0, 0, 0, 0, 0,
             ARBITRARY_TIME, ARBITRARY_TIME,
             /*pointerCount*/ 2, pointerProperties, pointerCoords);
     ASSERT_EQ(INPUT_EVENT_INJECTION_FAILED, mDispatcher->injectInputEvent(
-            &event, DISPLAY_ID,
+            &event,
             INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_NONE, 0, 0))
             << "Should reject motion events with duplicate pointer ids.";
 }
 
+// --- InputDispatcherTest SetInputWindowTest ---
+static const int32_t INJECT_EVENT_TIMEOUT = 500;
+static const int32_t DISPATCHING_TIMEOUT = 100;
+
+class FakeApplicationHandle : public InputApplicationHandle {
+public:
+    FakeApplicationHandle() {}
+    virtual ~FakeApplicationHandle() {}
+
+    virtual bool updateInfo() {
+        if (!mInfo) {
+            mInfo = new InputApplicationInfo();
+        }
+        mInfo->dispatchingTimeout = DISPATCHING_TIMEOUT;
+        return true;
+    }
+};
+
+class FakeWindowHandle : public InputWindowHandle {
+public:
+    static const int32_t WIDTH = 600;
+    static const int32_t HEIGHT = 800;
+
+    FakeWindowHandle(const sp<InputApplicationHandle>& inputApplicationHandle,
+        const sp<InputDispatcher>& dispatcher, const std::string name) :
+            InputWindowHandle(inputApplicationHandle), mDispatcher(dispatcher),
+            mName(name), mFocused(false), mDisplayId(ADISPLAY_ID_DEFAULT) {
+        InputChannel::openInputChannelPair(name, mServerChannel, mClientChannel);
+        mConsumer = new InputConsumer(mClientChannel);
+        mDispatcher->registerInputChannel(mServerChannel, this, false);
+    }
+
+    virtual ~FakeWindowHandle() {
+        mDispatcher->unregisterInputChannel(mServerChannel);
+        mServerChannel.clear();
+        mClientChannel.clear();
+        mDispatcher.clear();
+
+        if (mConsumer != nullptr) {
+            delete mConsumer;
+        }
+    }
+
+    virtual bool updateInfo() {
+        if (!mInfo) {
+            mInfo = new InputWindowInfo();
+        }
+        mInfo->inputChannel = mServerChannel;
+        mInfo->name = mName;
+        mInfo->layoutParamsFlags = 0;
+        mInfo->layoutParamsType = InputWindowInfo::TYPE_APPLICATION;
+        mInfo->dispatchingTimeout = DISPATCHING_TIMEOUT;
+        mInfo->frameLeft = 0;
+        mInfo->frameTop = 0;
+        mInfo->frameRight = WIDTH;
+        mInfo->frameBottom = HEIGHT;
+        mInfo->scaleFactor = 1.0;
+        mInfo->addTouchableRegion(Rect(0, 0, WIDTH, HEIGHT));
+        mInfo->visible = true;
+        mInfo->canReceiveKeys = true;
+        mInfo->hasFocus = mFocused;
+        mInfo->hasWallpaper = false;
+        mInfo->paused = false;
+        mInfo->layer = 0;
+        mInfo->ownerPid = INJECTOR_PID;
+        mInfo->ownerUid = INJECTOR_UID;
+        mInfo->inputFeatures = 0;
+        mInfo->displayId = mDisplayId;
+
+        return true;
+    }
+
+    void setFocus() {
+        mFocused = true;
+    }
+
+    void setDisplayId(int32_t displayId) {
+        mDisplayId = displayId;
+    }
+
+    void consumeEvent(int32_t expectedEventType, int32_t expectedDisplayId) {
+        uint32_t consumeSeq;
+        InputEvent* event;
+        status_t status = mConsumer->consume(&mEventFactory, false /*consumeBatches*/, -1,
+            &consumeSeq, &event);
+
+        ASSERT_EQ(OK, status)
+                << mName.c_str() << ": consumer consume should return OK.";
+        ASSERT_TRUE(event != nullptr)
+                << mName.c_str() << ": consumer should have returned non-NULL event.";
+        ASSERT_EQ(expectedEventType, event->getType())
+                << mName.c_str() << ": consumer type should same as expected one.";
+
+        ASSERT_EQ(expectedDisplayId, event->getDisplayId())
+                << mName.c_str() << ": consumer displayId should same as expected one.";
+
+        status = mConsumer->sendFinishedSignal(consumeSeq, true /*handled*/);
+        ASSERT_EQ(OK, status)
+                << mName.c_str() << ": consumer sendFinishedSignal should return OK.";
+    }
+
+    void assertNoEvents() {
+        uint32_t consumeSeq;
+        InputEvent* event;
+        status_t status = mConsumer->consume(&mEventFactory, false /*consumeBatches*/, -1,
+            &consumeSeq, &event);
+        ASSERT_NE(OK, status)
+                << mName.c_str()
+                << ": should not have received any events, so consume(..) should not return OK.";
+    }
+
+    private:
+        sp<InputDispatcher> mDispatcher;
+        sp<InputChannel> mServerChannel, mClientChannel;
+        InputConsumer *mConsumer;
+        PreallocatedInputEventFactory mEventFactory;
+
+        std::string mName;
+        bool mFocused;
+        int32_t mDisplayId;
+};
+
+static int32_t injectKeyDown(const sp<InputDispatcher>& dispatcher,
+        int32_t displayId = ADISPLAY_ID_NONE) {
+    KeyEvent event;
+    nsecs_t currentTime = systemTime(SYSTEM_TIME_MONOTONIC);
+
+    // Define a valid key down event.
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_KEYBOARD, displayId,
+            AKEY_EVENT_ACTION_DOWN, /* flags */ 0,
+            AKEYCODE_A, KEY_A, AMETA_NONE, /* repeatCount */ 0, currentTime, currentTime);
+
+    // Inject event until dispatch out.
+    return dispatcher->injectInputEvent(
+            &event,
+            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_RESULT,
+            INJECT_EVENT_TIMEOUT, POLICY_FLAG_FILTERED | POLICY_FLAG_PASS_TO_USER);
+}
+
+static int32_t injectMotionDown(const sp<InputDispatcher>& dispatcher, int32_t displayId) {
+    MotionEvent event;
+    PointerProperties pointerProperties[1];
+    PointerCoords pointerCoords[1];
+
+    pointerProperties[0].clear();
+    pointerProperties[0].id = 0;
+    pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_FINGER;
+
+    pointerCoords[0].clear();
+    pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 100);
+    pointerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 200);
+
+    nsecs_t currentTime = systemTime(SYSTEM_TIME_MONOTONIC);
+    // Define a valid motion down event.
+    event.initialize(DEVICE_ID, AINPUT_SOURCE_TOUCHSCREEN, displayId,
+            AMOTION_EVENT_ACTION_DOWN, /* actionButton */0, /* flags */ 0, /* edgeFlags */ 0,
+            AMETA_NONE, /* buttonState */ 0, /* xOffset */ 0, /* yOffset */ 0, /* xPrecision */ 0,
+            /* yPrecision */ 0, currentTime, currentTime, /*pointerCount*/ 1, pointerProperties,
+            pointerCoords);
+
+    // Inject event until dispatch out.
+    return dispatcher->injectInputEvent(
+            &event,
+            INJECTOR_PID, INJECTOR_UID, INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_RESULT,
+            INJECT_EVENT_TIMEOUT, POLICY_FLAG_FILTERED | POLICY_FLAG_PASS_TO_USER);
+}
+
+TEST_F(InputDispatcherTest, SetInputWindow_SingleWindowTouch) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> window = new FakeWindowHandle(application, mDispatcher, "Fake Window");
+
+    Vector<sp<InputWindowHandle>> inputWindowHandles;
+    inputWindowHandles.add(window);
+
+    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher, ADISPLAY_ID_DEFAULT))
+            << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+
+    // Window should receive motion event.
+    window->consumeEvent(AINPUT_EVENT_TYPE_MOTION, ADISPLAY_ID_DEFAULT);
+}
+
+// The foreground window should receive the first touch down event.
+TEST_F(InputDispatcherTest, SetInputWindow_MultiWindowsTouch) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> windowTop = new FakeWindowHandle(application, mDispatcher, "Top");
+    sp<FakeWindowHandle> windowSecond = new FakeWindowHandle(application, mDispatcher, "Second");
+
+    Vector<sp<InputWindowHandle>> inputWindowHandles;
+    inputWindowHandles.add(windowTop);
+    inputWindowHandles.add(windowSecond);
+
+    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher, ADISPLAY_ID_DEFAULT))
+            << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+
+    // Top window should receive the touch down event. Second window should not receive anything.
+    windowTop->consumeEvent(AINPUT_EVENT_TYPE_MOTION, ADISPLAY_ID_DEFAULT);
+    windowSecond->assertNoEvents();
+}
+
+TEST_F(InputDispatcherTest, SetInputWindow_FocusedWindow) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> windowTop = new FakeWindowHandle(application, mDispatcher, "Top");
+    sp<FakeWindowHandle> windowSecond = new FakeWindowHandle(application, mDispatcher, "Second");
+
+    // Set focus application.
+    mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
+
+    // Expect one focus window exist in display.
+    windowSecond->setFocus();
+    Vector<sp<InputWindowHandle>> inputWindowHandles;
+    inputWindowHandles.add(windowTop);
+    inputWindowHandles.add(windowSecond);
+
+    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher))
+            << "Inject key event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+
+    // Focused window should receive event.
+    windowTop->assertNoEvents();
+    windowSecond->consumeEvent(AINPUT_EVENT_TYPE_KEY, ADISPLAY_ID_NONE);
+}
+
+TEST_F(InputDispatcherTest, SetInputWindow_MultiDisplayTouch) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> windowInPrimary = new FakeWindowHandle(application, mDispatcher, "D_1");
+    sp<FakeWindowHandle> windowInSecondary = new FakeWindowHandle(application, mDispatcher, "D_2");
+
+    // Test the primary display touch down.
+    Vector<sp<InputWindowHandle>> inputWindowHandles;
+    inputWindowHandles.push(windowInPrimary);
+
+    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher, ADISPLAY_ID_DEFAULT))
+            << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+    windowInPrimary->consumeEvent(AINPUT_EVENT_TYPE_MOTION, ADISPLAY_ID_DEFAULT);
+    windowInSecondary->assertNoEvents();
+
+    // Test the second display touch down.
+    constexpr int32_t SECOND_DISPLAY_ID = 1;
+    windowInSecondary->setDisplayId(SECOND_DISPLAY_ID);
+    Vector<sp<InputWindowHandle>> inputWindowHandles_Second;
+    inputWindowHandles_Second.push(windowInSecondary);
+
+    mDispatcher->setInputWindows(inputWindowHandles_Second, SECOND_DISPLAY_ID);
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher, SECOND_DISPLAY_ID))
+            << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+    windowInPrimary->assertNoEvents();
+    windowInSecondary->consumeEvent(AINPUT_EVENT_TYPE_MOTION, SECOND_DISPLAY_ID);
+}
+
+TEST_F(InputDispatcherTest, SetInputWindow_FocusedInMultiDisplay) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> windowInPrimary = new FakeWindowHandle(application, mDispatcher, "D_1");
+    sp<FakeApplicationHandle> application2 = new FakeApplicationHandle();
+    sp<FakeWindowHandle> windowInSecondary = new FakeWindowHandle(application2, mDispatcher, "D_2");
+
+    constexpr int32_t SECOND_DISPLAY_ID = 1;
+
+    // Set focus to primary display window.
+    mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
+    windowInPrimary->setFocus();
+
+    // Set focus to second display window.
+    mDispatcher->setFocusedDisplay(SECOND_DISPLAY_ID);
+    mDispatcher->setFocusedApplication(SECOND_DISPLAY_ID, application2);
+    windowInSecondary->setFocus();
+
+    // Update all windows per displays.
+    Vector<sp<InputWindowHandle>> inputWindowHandles;
+    inputWindowHandles.push(windowInPrimary);
+    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+
+    windowInSecondary->setDisplayId(SECOND_DISPLAY_ID);
+    Vector<sp<InputWindowHandle>> inputWindowHandles_Second;
+    inputWindowHandles_Second.push(windowInSecondary);
+    mDispatcher->setInputWindows(inputWindowHandles_Second, SECOND_DISPLAY_ID);
+
+    // Test inject a key down with display id specified.
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher, ADISPLAY_ID_DEFAULT))
+            << "Inject key event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+    windowInPrimary->consumeEvent(AINPUT_EVENT_TYPE_KEY, ADISPLAY_ID_DEFAULT);
+    windowInSecondary->assertNoEvents();
+
+    // Test inject a key down without display id specified.
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher))
+            << "Inject key event should return INPUT_EVENT_INJECTION_SUCCEEDED";
+    windowInPrimary->assertNoEvents();
+    windowInSecondary->consumeEvent(AINPUT_EVENT_TYPE_KEY, ADISPLAY_ID_NONE);
+
+    // Remove secondary display.
+    inputWindowHandles_Second.clear();
+    mDispatcher->setInputWindows(inputWindowHandles_Second, SECOND_DISPLAY_ID);
+
+    // Expect old focus should receive a cancel event.
+    windowInSecondary->consumeEvent(AINPUT_EVENT_TYPE_KEY, ADISPLAY_ID_NONE);
+    // TODO(b/111361570): Validate that the event here was marked as canceled.
+
+    // Test inject a key down, should timeout because of no target window.
+    ASSERT_EQ(INPUT_EVENT_INJECTION_TIMED_OUT, injectKeyDown(mDispatcher))
+            << "Inject key event should return INPUT_EVENT_INJECTION_TIMED_OUT";
+    windowInPrimary->assertNoEvents();
+    windowInSecondary->assertNoEvents();
+}
+
 } // namespace android
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 22f15a0..b70ee09 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -132,6 +132,7 @@
     InputReaderConfiguration mConfig;
     KeyedVector<int32_t, sp<FakePointerController> > mPointerControllers;
     Vector<InputDeviceInfo> mInputDevices;
+    std::vector<DisplayViewport> mViewports;
     TouchAffineTransformation transform;
 
 protected:
@@ -142,22 +143,25 @@
     }
 
     void setDisplayViewport(int32_t displayId, int32_t width, int32_t height, int32_t orientation,
-            const String8& uniqueId) {
-        DisplayViewport v = createDisplayViewport(displayId, width, height, orientation, uniqueId);
+            const std::string& uniqueId) {
+        mViewports.clear();
         // Set the size of both the internal and external display at the same time.
-        mConfig.setPhysicalDisplayViewport(ViewportType::VIEWPORT_INTERNAL, v);
-        mConfig.setPhysicalDisplayViewport(ViewportType::VIEWPORT_EXTERNAL, v);
+        mViewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId,
+                ViewportType::VIEWPORT_INTERNAL));
+        mViewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId,
+                ViewportType::VIEWPORT_EXTERNAL));
+        mConfig.setDisplayViewports(mViewports);
     }
 
     void setVirtualDisplayViewport(int32_t displayId, int32_t width, int32_t height, int32_t orientation,
-            const String8& uniqueId) {
-        Vector<DisplayViewport> viewports;
-        viewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId));
-        mConfig.setVirtualDisplayViewports(viewports);
+            const std::string& uniqueId) {
+        mViewports.push_back(createDisplayViewport(displayId, width, height, orientation, uniqueId,
+                ViewportType::VIEWPORT_VIRTUAL));
+        mConfig.setDisplayViewports(mViewports);
     }
 
-    void addExcludedDeviceName(const String8& deviceName) {
-        mConfig.excludedDeviceNames.push(deviceName);
+    void addExcludedDeviceName(const std::string& deviceName) {
+        mConfig.excludedDeviceNames.push_back(deviceName);
     }
 
     void addDisabledDevice(int32_t deviceId) {
@@ -188,7 +192,7 @@
         return mInputDevices;
     }
 
-    TouchAffineTransformation getTouchAffineTransformation(const String8& inputDeviceDescriptor,
+    TouchAffineTransformation getTouchAffineTransformation(const std::string& inputDeviceDescriptor,
             int32_t surfaceRotation) {
         return transform;
     }
@@ -203,7 +207,7 @@
 
 private:
     DisplayViewport createDisplayViewport(int32_t displayId, int32_t width, int32_t height,
-            int32_t orientation, const String8& uniqueId) {
+            int32_t orientation, const std::string& uniqueId, ViewportType type) {
         bool isRotated = (orientation == DISPLAY_ORIENTATION_90
                 || orientation == DISPLAY_ORIENTATION_270);
         DisplayViewport v;
@@ -220,6 +224,7 @@
         v.deviceWidth = isRotated ? height : width;
         v.deviceHeight = isRotated ? width : height;
         v.uniqueId = uniqueId;
+        v.type = type;
         return v;
     }
 
@@ -236,11 +241,11 @@
     }
 
     virtual sp<KeyCharacterMap> getKeyboardLayoutOverlay(const InputDeviceIdentifier&) {
-        return NULL;
+        return nullptr;
     }
 
-    virtual String8 getDeviceAlias(const InputDeviceIdentifier&) {
-        return String8::empty();
+    virtual std::string getDeviceAlias(const InputDeviceIdentifier&) {
+        return "";
     }
 };
 
@@ -263,7 +268,7 @@
     }
 
     void assertNotifyConfigurationChangedWasCalled(
-            NotifyConfigurationChangedArgs* outEventArgs = NULL) {
+            NotifyConfigurationChangedArgs* outEventArgs = nullptr) {
         ASSERT_FALSE(mNotifyConfigurationChangedArgsQueue.empty())
                 << "Expected notifyConfigurationChanged() to have been called.";
         if (outEventArgs) {
@@ -278,7 +283,7 @@
     }
 
     void assertNotifyDeviceResetWasCalled(
-            NotifyDeviceResetArgs* outEventArgs = NULL) {
+            NotifyDeviceResetArgs* outEventArgs = nullptr) {
         ASSERT_FALSE(mNotifyDeviceResetArgsQueue.empty())
                 << "Expected notifyDeviceReset() to have been called.";
         if (outEventArgs) {
@@ -292,7 +297,7 @@
                 << "Expected notifyDeviceReset() to not have been called.";
     }
 
-    void assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs = NULL) {
+    void assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs = nullptr) {
         ASSERT_FALSE(mNotifyKeyArgsQueue.empty())
                 << "Expected notifyKey() to have been called.";
         if (outEventArgs) {
@@ -306,7 +311,7 @@
                 << "Expected notifyKey() to not have been called.";
     }
 
-    void assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs = NULL) {
+    void assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs = nullptr) {
         ASSERT_FALSE(mNotifyMotionArgsQueue.empty())
                 << "Expected notifyMotion() to have been called.";
         if (outEventArgs) {
@@ -320,7 +325,7 @@
                 << "Expected notifyMotion() to not have been called.";
     }
 
-    void assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs = NULL) {
+    void assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs = nullptr) {
         ASSERT_FALSE(mNotifySwitchArgsQueue.empty())
                 << "Expected notifySwitch() to have been called.";
         if (outEventArgs) {
@@ -392,7 +397,7 @@
     };
 
     KeyedVector<int32_t, Device*> mDevices;
-    Vector<String8> mExcludedDevices;
+    std::vector<std::string> mExcludedDevices;
     List<RawEvent> mEvents;
 
 protected:
@@ -405,7 +410,7 @@
 public:
     FakeEventHub() { }
 
-    void addDevice(int32_t deviceId, const String8& name, uint32_t classes) {
+    void addDevice(int32_t deviceId, const std::string& name, uint32_t classes) {
         Device* device = new Device(classes);
         device->identifier.name = name;
         mDevices.add(deviceId, device);
@@ -422,7 +427,7 @@
 
     bool isDeviceEnabled(int32_t deviceId) {
         Device* device = getDevice(deviceId);
-        if (device == NULL) {
+        if (device == nullptr) {
             ALOGE("Incorrect device id=%" PRId32 " provided to %s", deviceId, __func__);
             return false;
         }
@@ -432,7 +437,7 @@
     status_t enableDevice(int32_t deviceId) {
         status_t result;
         Device* device = getDevice(deviceId);
-        if (device == NULL) {
+        if (device == nullptr) {
             ALOGE("Incorrect device id=%" PRId32 " provided to %s", deviceId, __func__);
             return BAD_VALUE;
         }
@@ -446,7 +451,7 @@
 
     status_t disableDevice(int32_t deviceId) {
         Device* device = getDevice(deviceId);
-        if (device == NULL) {
+        if (device == nullptr) {
             ALOGE("Incorrect device id=%" PRId32 " provided to %s", deviceId, __func__);
             return BAD_VALUE;
         }
@@ -534,7 +539,7 @@
         return device->leds.valueFor(led);
     }
 
-    Vector<String8>& getExcludedDevices() {
+    std::vector<std::string>& getExcludedDevices() {
         return mExcludedDevices;
     }
 
@@ -566,7 +571,7 @@
 private:
     Device* getDevice(int32_t deviceId) const {
         ssize_t index = mDevices.indexOfKey(deviceId);
-        return index >= 0 ? mDevices.valueAt(index) : NULL;
+        return index >= 0 ? mDevices.valueAt(index) : nullptr;
     }
 
     virtual uint32_t getDeviceClasses(int32_t deviceId) const {
@@ -651,14 +656,14 @@
                 return &device->keysByScanCode.valueAt(index);
             }
         }
-        return NULL;
+        return nullptr;
     }
 
     virtual status_t mapAxis(int32_t, int32_t, AxisInfo*) const {
         return NAME_NOT_FOUND;
     }
 
-    virtual void setExcludedDevices(const Vector<String8>& devices) {
+    virtual void setExcludedDevices(const std::vector<std::string>& devices) {
         mExcludedDevices = devices;
     }
 
@@ -781,7 +786,7 @@
     }
 
     virtual sp<KeyCharacterMap> getKeyCharacterMap(int32_t) const {
-        return NULL;
+        return nullptr;
     }
 
     virtual bool setKeyboardLayoutOverlay(int32_t, const sp<KeyCharacterMap>&) {
@@ -940,7 +945,7 @@
         mResetWasCalled = false;
     }
 
-    void assertProcessWasCalled(RawEvent* outLastEvent = NULL) {
+    void assertProcessWasCalled(RawEvent* outLastEvent = nullptr) {
         ASSERT_TRUE(mProcessWasCalled)
                 << "Expected process() to have been called.";
         if (outLastEvent) {
@@ -1039,7 +1044,7 @@
             const sp<InputReaderPolicyInterface>& policy,
             const sp<InputListenerInterface>& listener) :
             InputReader(eventHub, policy, listener),
-            mNextDevice(NULL) {
+            mNextDevice(nullptr) {
     }
 
     virtual ~InstrumentedInputReader() {
@@ -1052,7 +1057,7 @@
         mNextDevice = device;
     }
 
-    InputDevice* newDevice(int32_t deviceId, int32_t controllerNumber, const String8& name,
+    InputDevice* newDevice(int32_t deviceId, int32_t controllerNumber, const std::string& name,
             uint32_t classes) {
         InputDeviceIdentifier identifier;
         identifier.name = name;
@@ -1066,7 +1071,7 @@
             const InputDeviceIdentifier& identifier, uint32_t classes) {
         if (mNextDevice) {
             InputDevice* device = mNextDevice;
-            mNextDevice = NULL;
+            mNextDevice = nullptr;
             return device;
         }
         return InputReader::createDeviceLocked(deviceId, controllerNumber, identifier, classes);
@@ -1101,7 +1106,7 @@
         mFakeEventHub.clear();
     }
 
-    void addDevice(int32_t deviceId, const String8& name, uint32_t classes,
+    void addDevice(int32_t deviceId, const std::string& name, uint32_t classes,
             const PropertyMap* configuration) {
         mFakeEventHub->addDevice(deviceId, name, classes);
 
@@ -1129,7 +1134,7 @@
     }
 
     FakeInputMapper* addDeviceWithFakeInputMapper(int32_t deviceId, int32_t controllerNumber,
-            const String8& name, uint32_t classes, uint32_t sources,
+            const std::string& name, uint32_t classes, uint32_t sources,
             const PropertyMap* configuration) {
         InputDevice* device = mReader->newDevice(deviceId, controllerNumber, name, classes);
         FakeInputMapper* mapper = new FakeInputMapper(device, sources);
@@ -1141,17 +1146,18 @@
 };
 
 TEST_F(InputReaderTest, GetInputDevices) {
-    ASSERT_NO_FATAL_FAILURE(addDevice(1, String8("keyboard"),
-            INPUT_DEVICE_CLASS_KEYBOARD, NULL));
-    ASSERT_NO_FATAL_FAILURE(addDevice(2, String8("ignored"),
-            0, NULL)); // no classes so device will be ignored
+    ASSERT_NO_FATAL_FAILURE(addDevice(1, "keyboard",
+            INPUT_DEVICE_CLASS_KEYBOARD, nullptr));
+    ASSERT_NO_FATAL_FAILURE(addDevice(2, "ignored",
+            0, nullptr)); // no classes so device will be ignored
+
 
     Vector<InputDeviceInfo> inputDevices;
     mReader->getInputDevices(inputDevices);
 
     ASSERT_EQ(1U, inputDevices.size());
     ASSERT_EQ(1, inputDevices[0].getId());
-    ASSERT_STREQ("keyboard", inputDevices[0].getIdentifier().name.string());
+    ASSERT_STREQ("keyboard", inputDevices[0].getIdentifier().name.c_str());
     ASSERT_EQ(AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC, inputDevices[0].getKeyboardType());
     ASSERT_EQ(AINPUT_SOURCE_KEYBOARD, inputDevices[0].getSources());
     ASSERT_EQ(size_t(0), inputDevices[0].getMotionRanges().size());
@@ -1160,7 +1166,7 @@
     inputDevices = mFakePolicy->getInputDevices();
     ASSERT_EQ(1U, inputDevices.size());
     ASSERT_EQ(1, inputDevices[0].getId());
-    ASSERT_STREQ("keyboard", inputDevices[0].getIdentifier().name.string());
+    ASSERT_STREQ("keyboard", inputDevices[0].getIdentifier().name.c_str());
     ASSERT_EQ(AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC, inputDevices[0].getKeyboardType());
     ASSERT_EQ(AINPUT_SOURCE_KEYBOARD, inputDevices[0].getSources());
     ASSERT_EQ(size_t(0), inputDevices[0].getMotionRanges().size());
@@ -1169,14 +1175,14 @@
 TEST_F(InputReaderTest, WhenEnabledChanges_SendsDeviceResetNotification) {
     constexpr int32_t deviceId = 1;
     constexpr uint32_t deviceClass = INPUT_DEVICE_CLASS_KEYBOARD;
-    InputDevice* device = mReader->newDevice(deviceId, 0, String8("fake"), deviceClass);
+    InputDevice* device = mReader->newDevice(deviceId, 0, "fake", deviceClass);
     // Must add at least one mapper or the device will be ignored!
     FakeInputMapper* mapper = new FakeInputMapper(device, AINPUT_SOURCE_KEYBOARD);
     device->addMapper(mapper);
     mReader->setNextDevice(device);
-    addDevice(deviceId, String8("fake"), deviceClass, NULL);
+    addDevice(deviceId, "fake", deviceClass, nullptr);
 
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasCalled(NULL));
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasCalled(nullptr));
 
     NotifyDeviceResetArgs resetArgs;
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
@@ -1207,9 +1213,9 @@
 }
 
 TEST_F(InputReaderTest, GetKeyCodeState_ForwardsRequestsToMappers) {
-    FakeInputMapper* mapper = NULL;
-    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, String8("fake"),
-            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, NULL));
+    FakeInputMapper* mapper = nullptr;
+    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, "fake",
+            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, nullptr));
     mapper->setKeyCodeState(AKEYCODE_A, AKEY_STATE_DOWN);
 
     ASSERT_EQ(AKEY_STATE_UNKNOWN, mReader->getKeyCodeState(0,
@@ -1234,9 +1240,9 @@
 }
 
 TEST_F(InputReaderTest, GetScanCodeState_ForwardsRequestsToMappers) {
-    FakeInputMapper* mapper = NULL;
-    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, String8("fake"),
-            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, NULL));
+    FakeInputMapper* mapper = nullptr;
+    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, "fake",
+            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, nullptr));
     mapper->setScanCodeState(KEY_A, AKEY_STATE_DOWN);
 
     ASSERT_EQ(AKEY_STATE_UNKNOWN, mReader->getScanCodeState(0,
@@ -1261,9 +1267,9 @@
 }
 
 TEST_F(InputReaderTest, GetSwitchState_ForwardsRequestsToMappers) {
-    FakeInputMapper* mapper = NULL;
-    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, String8("fake"),
-            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, NULL));
+    FakeInputMapper* mapper = nullptr;
+    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, "fake",
+            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, nullptr));
     mapper->setSwitchState(SW_LID, AKEY_STATE_DOWN);
 
     ASSERT_EQ(AKEY_STATE_UNKNOWN, mReader->getSwitchState(0,
@@ -1288,9 +1294,10 @@
 }
 
 TEST_F(InputReaderTest, MarkSupportedKeyCodes_ForwardsRequestsToMappers) {
-    FakeInputMapper* mapper = NULL;
-    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, String8("fake"),
-            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, NULL));
+    FakeInputMapper* mapper = nullptr;
+    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, "fake",
+            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, nullptr));
+
     mapper->addSupportedKeyCode(AKEYCODE_A);
     mapper->addSupportedKeyCode(AKEYCODE_B);
 
@@ -1323,7 +1330,7 @@
 }
 
 TEST_F(InputReaderTest, LoopOnce_WhenDeviceScanFinished_SendsConfigurationChanged) {
-    addDevice(1, String8("ignored"), INPUT_DEVICE_CLASS_KEYBOARD, NULL);
+    addDevice(1, "ignored", INPUT_DEVICE_CLASS_KEYBOARD, nullptr);
 
     NotifyConfigurationChangedArgs args;
 
@@ -1332,9 +1339,9 @@
 }
 
 TEST_F(InputReaderTest, LoopOnce_ForwardsRawEventsToMappers) {
-    FakeInputMapper* mapper = NULL;
-    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, String8("fake"),
-            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, NULL));
+    FakeInputMapper* mapper = nullptr;
+    ASSERT_NO_FATAL_FAILURE(mapper = addDeviceWithFakeInputMapper(1, 0, "fake",
+            INPUT_DEVICE_CLASS_KEYBOARD, AINPUT_SOURCE_KEYBOARD, nullptr));
 
     mFakeEventHub->enqueueEvent(0, 1, EV_KEY, KEY_A, 1);
     mReader->loopOnce();
@@ -1373,7 +1380,7 @@
         mFakeListener = new FakeInputListener();
         mFakeContext = new FakeInputReaderContext(mFakeEventHub, mFakePolicy, mFakeListener);
 
-        mFakeEventHub->addDevice(DEVICE_ID, String8(DEVICE_NAME), 0);
+        mFakeEventHub->addDevice(DEVICE_ID, DEVICE_NAME, 0);
         InputDeviceIdentifier identifier;
         identifier.name = DEVICE_NAME;
         mDevice = new InputDevice(mFakeContext, DEVICE_ID, DEVICE_GENERATION,
@@ -1399,7 +1406,7 @@
 
 TEST_F(InputDeviceTest, ImmutableProperties) {
     ASSERT_EQ(DEVICE_ID, mDevice->getId());
-    ASSERT_STREQ(DEVICE_NAME, mDevice->getName());
+    ASSERT_STREQ(DEVICE_NAME, mDevice->getName().c_str());
     ASSERT_EQ(DEVICE_CLASSES, mDevice->getClasses());
 }
 
@@ -1427,7 +1434,7 @@
     InputDeviceInfo info;
     mDevice->getDeviceInfo(&info);
     ASSERT_EQ(DEVICE_ID, info.getId());
-    ASSERT_STREQ(DEVICE_NAME, info.getIdentifier().name.string());
+    ASSERT_STREQ(DEVICE_NAME, info.getIdentifier().name.c_str());
     ASSERT_EQ(AINPUT_KEYBOARD_TYPE_NONE, info.getKeyboardType());
     ASSERT_EQ(AINPUT_SOURCE_UNKNOWN, info.getSources());
 
@@ -1497,7 +1504,7 @@
     InputDeviceInfo info;
     mDevice->getDeviceInfo(&info);
     ASSERT_EQ(DEVICE_ID, info.getId());
-    ASSERT_STREQ(DEVICE_NAME, info.getIdentifier().name.string());
+    ASSERT_STREQ(DEVICE_NAME, info.getIdentifier().name.c_str());
     ASSERT_EQ(AINPUT_KEYBOARD_TYPE_ALPHABETIC, info.getKeyboardType());
     ASSERT_EQ(uint32_t(AINPUT_SOURCE_KEYBOARD | AINPUT_SOURCE_TOUCHSCREEN), info.getSources());
 
@@ -1570,7 +1577,7 @@
         mDevice = new InputDevice(mFakeContext, DEVICE_ID, DEVICE_GENERATION,
                 DEVICE_CONTROLLER_NUMBER, identifier, DEVICE_CLASSES);
 
-        mFakeEventHub->addDevice(DEVICE_ID, String8(DEVICE_NAME), 0);
+        mFakeEventHub->addDevice(DEVICE_ID, DEVICE_NAME, 0);
     }
 
     virtual void TearDown() {
@@ -1597,12 +1604,12 @@
 
     void setDisplayInfoAndReconfigure(int32_t displayId, int32_t width, int32_t height,
             int32_t orientation) {
-        mFakePolicy->setDisplayViewport(displayId, width, height, orientation, String8::empty());
+        mFakePolicy->setDisplayViewport(displayId, width, height, orientation, "");
         configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     }
 
     void setVirtualDisplayInfoAndReconfigure(int32_t displayId, int32_t width, int32_t height,
-            int32_t orientation, const String8& uniqueId) {
+            int32_t orientation, const std::string& uniqueId) {
         mFakePolicy->setVirtualDisplayViewport(displayId, width, height, orientation, uniqueId);
         configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     }
@@ -1621,7 +1628,7 @@
     static void assertMotionRange(const InputDeviceInfo& info,
             int32_t axis, uint32_t source, float min, float max, float flat, float fuzz) {
         const InputDeviceInfo::MotionRange* range = info.getMotionRange(axis, source);
-        ASSERT_TRUE(range != NULL) << "Axis: " << axis << " Source: " << source;
+        ASSERT_TRUE(range != nullptr) << "Axis: " << axis << " Source: " << source;
         ASSERT_EQ(axis, range->axis) << "Axis: " << axis << " Source: " << source;
         ASSERT_EQ(source, range->source) << "Axis: " << axis << " Source: " << source;
         ASSERT_NEAR(min, range->min, EPSILON) << "Axis: " << axis << " Source: " << source;
@@ -1996,6 +2003,64 @@
     ASSERT_EQ(AKEYCODE_DPAD_RIGHT, args.keyCode);
 }
 
+TEST_F(KeyboardInputMapperTest, DisplayIdConfigurationChange_NotOrientationAware) {
+    // If the keyboard is not orientation aware,
+    // key events should not be associated with a specific display id
+    mFakeEventHub->addKey(DEVICE_ID, KEY_UP, 0, AKEYCODE_DPAD_UP, 0);
+
+    KeyboardInputMapper* mapper = new KeyboardInputMapper(mDevice,
+            AINPUT_SOURCE_KEYBOARD, AINPUT_KEYBOARD_TYPE_ALPHABETIC);
+    addMapperAndConfigure(mapper);
+    NotifyKeyArgs args;
+
+    // Display id should be ADISPLAY_ID_NONE without any display configuration.
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    ASSERT_EQ(ADISPLAY_ID_NONE, args.displayId);
+
+    setDisplayInfoAndReconfigure(DISPLAY_ID,
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    ASSERT_EQ(ADISPLAY_ID_NONE, args.displayId);
+}
+
+TEST_F(KeyboardInputMapperTest, DisplayIdConfigurationChange_OrientationAware) {
+    // If the keyboard is orientation aware,
+    // key events should be associated with the internal viewport
+    mFakeEventHub->addKey(DEVICE_ID, KEY_UP, 0, AKEYCODE_DPAD_UP, 0);
+
+    KeyboardInputMapper* mapper = new KeyboardInputMapper(mDevice,
+            AINPUT_SOURCE_KEYBOARD, AINPUT_KEYBOARD_TYPE_ALPHABETIC);
+    addConfigurationProperty("keyboard.orientationAware", "1");
+    addMapperAndConfigure(mapper);
+    NotifyKeyArgs args;
+
+    // Display id should be ADISPLAY_ID_NONE without any display configuration.
+    // ^--- already checked by the previous test
+
+    setDisplayInfoAndReconfigure(DISPLAY_ID,
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    ASSERT_EQ(DISPLAY_ID, args.displayId);
+
+    constexpr int32_t newDisplayId = 2;
+    setDisplayInfoAndReconfigure(newDisplayId,
+            DISPLAY_WIDTH, DISPLAY_HEIGHT, DISPLAY_ORIENTATION_0);
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 1);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    process(mapper, ARBITRARY_TIME, DEVICE_ID, EV_KEY, KEY_UP, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyKeyWasCalled(&args));
+    ASSERT_EQ(newDisplayId, args.displayId);
+}
+
 TEST_F(KeyboardInputMapperTest, GetKeyCodeState) {
     KeyboardInputMapper* mapper = new KeyboardInputMapper(mDevice,
             AINPUT_SOURCE_KEYBOARD, AINPUT_KEYBOARD_TYPE_ALPHABETIC);
@@ -2174,8 +2239,8 @@
     mapper->populateDeviceInfo(&info);
 
     // Initially there may not be a valid motion range.
-    ASSERT_EQ(NULL, info.getMotionRange(AINPUT_MOTION_RANGE_X, AINPUT_SOURCE_MOUSE));
-    ASSERT_EQ(NULL, info.getMotionRange(AINPUT_MOTION_RANGE_Y, AINPUT_SOURCE_MOUSE));
+    ASSERT_EQ(nullptr, info.getMotionRange(AINPUT_MOTION_RANGE_X, AINPUT_SOURCE_MOUSE));
+    ASSERT_EQ(nullptr, info.getMotionRange(AINPUT_MOTION_RANGE_Y, AINPUT_SOURCE_MOUSE));
     ASSERT_NO_FATAL_FAILURE(assertMotionRange(info,
             AINPUT_MOTION_RANGE_PRESSURE, AINPUT_SOURCE_MOUSE, 0.0f, 1.0f, 0.0f, 0.0f));
 
@@ -2990,7 +3055,7 @@
 
 void TouchInputMapperTest::prepareVirtualDisplay(int32_t orientation) {
     setVirtualDisplayInfoAndReconfigure(VIRTUAL_DISPLAY_ID, VIRTUAL_DISPLAY_WIDTH,
-        VIRTUAL_DISPLAY_HEIGHT, orientation, String8(VIRTUAL_DISPLAY_UNIQUE_ID));
+        VIRTUAL_DISPLAY_HEIGHT, orientation, VIRTUAL_DISPLAY_UNIQUE_ID);
 }
 
 void TouchInputMapperTest::prepareVirtualKeys() {
diff --git a/services/media/arcvideobridge/Android.bp b/services/media/arcvideobridge/Android.bp
deleted file mode 100644
index ca5b896..0000000
--- a/services/media/arcvideobridge/Android.bp
+++ /dev/null
@@ -1,28 +0,0 @@
-cc_library_shared {
-    name: "libarcvideobridge",
-    product_variables: {
-        arc: {
-            srcs: [
-                "IArcVideoBridge.cpp",
-            ],
-            shared_libs: [
-                "libarcbridge",
-                "libarcbridgeservice",
-                "libbinder",
-                "libchrome",
-                "liblog",
-                "libmojo",
-                "libutils",
-            ],
-            cflags: [
-                "-Wall",
-                "-Werror",
-                "-Wunused",
-                "-Wunreachable-code",
-            ],
-            include_dirs: [
-                "frameworks/native/include/media/arcvideobridge",
-            ]
-        }
-    }
-}
diff --git a/services/media/arcvideobridge/IArcVideoBridge.cpp b/services/media/arcvideobridge/IArcVideoBridge.cpp
deleted file mode 100644
index 468b76b..0000000
--- a/services/media/arcvideobridge/IArcVideoBridge.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "IArcVideoBridge"
-//#define LOG_NDEBUG 0
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include "IArcVideoBridge.h"
-#include <binder/Parcel.h>
-#include <utils/Log.h>
-
-namespace android {
-
-enum {
-    BOOTSTRAP_VIDEO_ACCELERATOR_FACTORY = IBinder::FIRST_CALL_TRANSACTION,
-    HOST_VERSION,
-};
-
-class BpArcVideoBridge : public BpInterface<IArcVideoBridge> {
-public:
-    BpArcVideoBridge(const sp<IBinder>& impl) : BpInterface<IArcVideoBridge>(impl) { }
-
-    virtual ::arc::MojoBootstrapResult bootstrapVideoAcceleratorFactory() {
-        Parcel data, reply;
-        ALOGV("bootstrapVideoAcceleratorFactory");
-        data.writeInterfaceToken(IArcVideoBridge::getInterfaceDescriptor());
-        status_t status = remote()->transact(
-                BOOTSTRAP_VIDEO_ACCELERATOR_FACTORY, data, &reply, 0);
-        if (status != 0) {
-            ALOGE("transact failed: %d", status);
-            return arc::MojoBootstrapResult();
-        }
-        return arc::MojoBootstrapResult::createFromParcel(reply);
-    }
-
-    virtual int32_t hostVersion() {
-        Parcel data, reply;
-        ALOGV("hostVersion");
-        data.writeInterfaceToken(IArcVideoBridge::getInterfaceDescriptor());
-        status_t status = remote()->transact(HOST_VERSION, data, &reply, 0);
-        if (status != 0) {
-            ALOGE("transact failed: %d", status);
-            return false;
-        }
-        return reply.readInt32();
-    }
-};
-
-IMPLEMENT_META_INTERFACE(ArcVideoBridge, "android.os.IArcVideoBridge");
-
-status_t BnArcVideoBridge::onTransact(
-        uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
-    switch(code) {
-        case BOOTSTRAP_VIDEO_ACCELERATOR_FACTORY: {
-            ALOGV("BOOTSTRAP_VIDEO_ACCELERATOR_FACTORY");
-            CHECK_INTERFACE(IArcVideoBridge, data, reply);
-            arc::MojoBootstrapResult result = bootstrapVideoAcceleratorFactory();
-            return result.writeToParcel(reply);
-        }
-        case HOST_VERSION: {
-            ALOGV("HOST_VERSION");
-            CHECK_INTERFACE(IArcVideoBridge, data, reply);
-            reply->writeInt32(hostVersion());
-            return OK;
-        }
-        default:
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-}
-
-}  // namespace android
diff --git a/services/sensorservice/Android.bp b/services/sensorservice/Android.bp
index a7f3a52..f87fcdc 100644
--- a/services/sensorservice/Android.bp
+++ b/services/sensorservice/Android.bp
@@ -46,7 +46,9 @@
         "libhidlbase",
         "libhidltransport",
         "libhwbinder",
+        "libfmq",
         "android.hardware.sensors@1.0",
+        "android.hardware.sensors@2.0",
     ],
 
     static_libs: ["android.hardware.sensors@1.0-convert"],
diff --git a/services/sensorservice/BatteryService.cpp b/services/sensorservice/BatteryService.cpp
index d8e5b29..14f9a12 100644
--- a/services/sensorservice/BatteryService.cpp
+++ b/services/sensorservice/BatteryService.cpp
@@ -94,7 +94,7 @@
 bool BatteryService::checkService() {
     if (mBatteryStatService == nullptr) {
         const sp<IServiceManager> sm(defaultServiceManager());
-        if (sm != NULL) {
+        if (sm != nullptr) {
             const String16 name("batterystats");
             mBatteryStatService = interface_cast<IBatteryStats>(sm->getService(name));
         }
diff --git a/services/sensorservice/RecentEventLogger.cpp b/services/sensorservice/RecentEventLogger.cpp
index 1025a88..cec2ae5 100644
--- a/services/sensorservice/RecentEventLogger.cpp
+++ b/services/sensorservice/RecentEventLogger.cpp
@@ -26,6 +26,7 @@
 
 namespace {
     constexpr size_t LOG_SIZE = 10;
+    constexpr size_t LOG_SIZE_MED = 30;  // debugging for slower sensors
     constexpr size_t LOG_SIZE_LARGE = 50;  // larger samples for debugging
 }// unnamed namespace
 
@@ -98,10 +99,16 @@
 
 
 size_t RecentEventLogger::logSizeBySensorType(int sensorType) {
-    return (sensorType == SENSOR_TYPE_STEP_COUNTER ||
-            sensorType == SENSOR_TYPE_SIGNIFICANT_MOTION ||
-            sensorType == SENSOR_TYPE_ACCELEROMETER ||
-            sensorType == SENSOR_TYPE_LIGHT) ? LOG_SIZE_LARGE : LOG_SIZE;
+    if (sensorType == SENSOR_TYPE_STEP_COUNTER ||
+        sensorType == SENSOR_TYPE_SIGNIFICANT_MOTION ||
+        sensorType == SENSOR_TYPE_ACCELEROMETER ||
+        sensorType == SENSOR_TYPE_LIGHT) {
+        return LOG_SIZE_LARGE;
+    }
+    if (sensorType == SENSOR_TYPE_PROXIMITY) {
+        return LOG_SIZE_MED;
+    }
+    return LOG_SIZE;
 }
 
 RecentEventLogger::SensorEventLog::SensorEventLog(const sensors_event_t& e) : mEvent(e) {
diff --git a/services/sensorservice/RotationVectorSensor.cpp b/services/sensorservice/RotationVectorSensor.cpp
index 7b00f4d..f2ea02e 100644
--- a/services/sensorservice/RotationVectorSensor.cpp
+++ b/services/sensorservice/RotationVectorSensor.cpp
@@ -94,7 +94,7 @@
             return "GeoMag Rotation Vector Sensor";
         default:
             assert(0);
-            return NULL;
+            return nullptr;
     }
 }
 
diff --git a/services/sensorservice/SensorDevice.cpp b/services/sensorservice/SensorDevice.cpp
index 115a983..f813fe5 100644
--- a/services/sensorservice/SensorDevice.cpp
+++ b/services/sensorservice/SensorDevice.cpp
@@ -13,7 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 #include "SensorDevice.h"
+
+#include "android/hardware/sensors/2.0/ISensorsCallback.h"
+#include "android/hardware/sensors/2.0/types.h"
 #include "SensorService.h"
 
 #include <android-base/logging.h>
@@ -26,9 +30,13 @@
 #include <cinttypes>
 #include <thread>
 
+using namespace android::hardware::sensors;
 using namespace android::hardware::sensors::V1_0;
 using namespace android::hardware::sensors::V1_0::implementation;
+using android::hardware::sensors::V2_0::ISensorsCallback;
+using android::hardware::sensors::V2_0::EventQueueFlagBits;
 using android::hardware::hidl_vec;
+using android::hardware::Return;
 using android::SensorDeviceUtils::HidlServiceRegistrationWaiter;
 
 namespace android {
@@ -51,6 +59,27 @@
     }
 }
 
+void SensorsHalDeathReceivier::serviceDied(
+        uint64_t /* cookie */,
+        const wp<::android::hidl::base::V1_0::IBase>& /* service */) {
+    ALOGW("Sensors HAL died, attempting to reconnect.");
+    // TODO: Attempt reconnect
+}
+
+struct SensorsCallback : public ISensorsCallback {
+    using Result = ::android::hardware::sensors::V1_0::Result;
+    Return<void> onDynamicSensorsConnected(
+            const hidl_vec<SensorInfo> &dynamicSensorsAdded) override {
+        return SensorDevice::getInstance().onDynamicSensorsConnected(dynamicSensorsAdded);
+    }
+
+    Return<void> onDynamicSensorsDisconnected(
+            const hidl_vec<int32_t> &dynamicSensorHandlesRemoved) override {
+        return SensorDevice::getInstance().onDynamicSensorsDisconnected(
+                dynamicSensorHandlesRemoved);
+    }
+};
+
 SensorDevice::SensorDevice()
         : mHidlTransportErrors(20), mRestartWaiter(new HidlServiceRegistrationWaiter()) {
     if (!connectHidlService()) {
@@ -86,32 +115,93 @@
            (checkReturn(mSensors->unregisterDirectChannel(-1)) != Result::INVALID_OPERATION);
 }
 
+SensorDevice::~SensorDevice() {
+    if (mEventQueueFlag != nullptr) {
+        hardware::EventFlag::deleteEventFlag(&mEventQueueFlag);
+        mEventQueueFlag = nullptr;
+    }
+}
+
 bool SensorDevice::connectHidlService() {
+    HalConnectionStatus status = connectHidlServiceV2_0();
+    if (status == HalConnectionStatus::DOES_NOT_EXIST) {
+        status = connectHidlServiceV1_0();
+    }
+    return (status == HalConnectionStatus::CONNECTED);
+}
+
+SensorDevice::HalConnectionStatus SensorDevice::connectHidlServiceV1_0() {
     // SensorDevice will wait for HAL service to start if HAL is declared in device manifest.
     size_t retry = 10;
+    HalConnectionStatus connectionStatus = HalConnectionStatus::UNKNOWN;
 
     while (retry-- > 0) {
-        mSensors = ISensors::getService();
-        if (mSensors == nullptr) {
+        sp<V1_0::ISensors> sensors = V1_0::ISensors::getService();
+        if (sensors == nullptr) {
             // no sensor hidl service found
+            connectionStatus = HalConnectionStatus::DOES_NOT_EXIST;
             break;
         }
 
+        mSensors = new SensorServiceUtil::SensorsWrapperV1_0(sensors);
         mRestartWaiter->reset();
         // Poke ISensor service. If it has lingering connection from previous generation of
         // system server, it will kill itself. There is no intention to handle the poll result,
         // which will be done since the size is 0.
         if(mSensors->poll(0, [](auto, const auto &, const auto &) {}).isOk()) {
             // ok to continue
+            connectionStatus = HalConnectionStatus::CONNECTED;
             break;
         }
 
         // hidl service is restarting, pointer is invalid.
         mSensors = nullptr;
+        connectionStatus = HalConnectionStatus::FAILED_TO_CONNECT;
         ALOGI("%s unsuccessful, remaining retry %zu.", __FUNCTION__, retry);
         mRestartWaiter->wait();
     }
-    return (mSensors != nullptr);
+
+    return connectionStatus;
+}
+
+SensorDevice::HalConnectionStatus SensorDevice::connectHidlServiceV2_0() {
+    HalConnectionStatus connectionStatus = HalConnectionStatus::UNKNOWN;
+    sp<V2_0::ISensors> sensors = V2_0::ISensors::getService();
+
+    if (sensors == nullptr) {
+        connectionStatus = HalConnectionStatus::DOES_NOT_EXIST;
+    } else {
+        mSensors = new SensorServiceUtil::SensorsWrapperV2_0(sensors);
+
+        mEventQueue = std::make_unique<EventMessageQueue>(
+                SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT,
+                true /* configureEventFlagWord */);
+
+        mWakeLockQueue = std::make_unique<WakeLockQueue>(
+                SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT,
+                true /* configureEventFlagWord */);
+
+        hardware::EventFlag::createEventFlag(mEventQueue->getEventFlagWord(), &mEventQueueFlag);
+
+        CHECK(mSensors != nullptr && mEventQueue != nullptr &&
+                mWakeLockQueue != nullptr && mEventQueueFlag != nullptr);
+
+        status_t status = StatusFromResult(checkReturn(mSensors->initialize(
+                *mEventQueue->getDesc(),
+                *mWakeLockQueue->getDesc(),
+                new SensorsCallback())));
+
+        if (status != NO_ERROR) {
+            connectionStatus = HalConnectionStatus::FAILED_TO_CONNECT;
+            ALOGE("Failed to initialize Sensors HAL (%s)", strerror(-status));
+        } else {
+            connectionStatus = HalConnectionStatus::CONNECTED;
+            mSensorsHalDeathReceiver = new SensorsHalDeathReceivier();
+            sensors->linkToDeath(mSensorsHalDeathReceiver, 0 /* cookie */);
+        }
+    }
+
+    return connectionStatus;
 }
 
 void SensorDevice::handleDynamicSensorConnection(int handle, bool connected) {
@@ -171,6 +261,19 @@
 }
 
 ssize_t SensorDevice::poll(sensors_event_t* buffer, size_t count) {
+    ssize_t eventsRead = 0;
+    if (mSensors->supportsMessageQueues()) {
+        eventsRead = pollFmq(buffer, count);
+    } else if (mSensors->supportsPolling()) {
+        eventsRead = pollHal(buffer, count);
+    } else {
+        ALOGE("Must support polling or FMQ");
+        eventsRead = -1;
+    }
+    return eventsRead;
+}
+
+ssize_t SensorDevice::pollHal(sensors_event_t* buffer, size_t count) {
     if (mSensors == nullptr) return NO_INIT;
 
     ssize_t err;
@@ -208,7 +311,7 @@
 
     if(numHidlTransportErrors > 0) {
         ALOGE("Saw %d Hidl transport failures", numHidlTransportErrors);
-        HidlTransportErrorLog errLog(time(NULL), numHidlTransportErrors);
+        HidlTransportErrorLog errLog(time(nullptr), numHidlTransportErrors);
         mHidlTransportErrors.add(errLog);
         mTotalHidlTransportErrors++;
     }
@@ -216,6 +319,79 @@
     return err;
 }
 
+ssize_t SensorDevice::pollFmq(sensors_event_t* buffer, size_t maxNumEventsToRead) {
+    if (mSensors == nullptr) {
+        return NO_INIT;
+    }
+
+    ssize_t eventsRead = 0;
+    size_t availableEvents = mEventQueue->availableToRead();
+
+    if (availableEvents == 0) {
+        uint32_t eventFlagState = 0;
+
+        // Wait for events to become available. This is necessary so that the Event FMQ's read() is
+        // able to be called with the correct number of events to read. If the specified number of
+        // events is not available, then read() would return no events, possibly introducing
+        // additional latency in delivering events to applications.
+        mEventQueueFlag->wait(static_cast<uint32_t>(EventQueueFlagBits::READ_AND_PROCESS),
+                              &eventFlagState);
+        availableEvents = mEventQueue->availableToRead();
+
+        if (availableEvents == 0) {
+            ALOGW("Event FMQ wake without any events");
+        }
+    }
+
+    size_t eventsToRead = std::min({availableEvents, maxNumEventsToRead, mEventBuffer.size()});
+    if (eventsToRead > 0) {
+        if (mEventQueue->read(mEventBuffer.data(), eventsToRead)) {
+            for (size_t i = 0; i < eventsToRead; i++) {
+                convertToSensorEvent(mEventBuffer[i], &buffer[i]);
+            }
+            eventsRead = eventsToRead;
+        } else {
+            ALOGW("Failed to read %zu events, currently %zu events available",
+                    eventsToRead, availableEvents);
+        }
+    }
+
+    return eventsRead;
+}
+
+Return<void> SensorDevice::onDynamicSensorsConnected(
+        const hidl_vec<SensorInfo> &dynamicSensorsAdded) {
+    // Allocate a sensor_t structure for each dynamic sensor added and insert
+    // it into the dictionary of connected dynamic sensors keyed by handle.
+    for (size_t i = 0; i < dynamicSensorsAdded.size(); ++i) {
+        const SensorInfo &info = dynamicSensorsAdded[i];
+
+        auto it = mConnectedDynamicSensors.find(info.sensorHandle);
+        CHECK(it == mConnectedDynamicSensors.end());
+
+        sensor_t *sensor = new sensor_t();
+        convertToSensor(info, sensor);
+
+        mConnectedDynamicSensors.insert(
+                std::make_pair(sensor->handle, sensor));
+    }
+
+    return Return<void>();
+}
+
+Return<void> SensorDevice::onDynamicSensorsDisconnected(
+        const hidl_vec<int32_t> &dynamicSensorHandlesRemoved) {
+    (void) dynamicSensorHandlesRemoved;
+    // TODO: Currently dynamic sensors do not seem to be removed
+    return Return<void>();
+}
+
+void SensorDevice::writeWakeLockHandled(uint32_t count) {
+    if (mSensors->supportsMessageQueues() && !mWakeLockQueue->write(&count)) {
+        ALOGW("Failed to write wake lock handled");
+    }
+}
+
 void SensorDevice::autoDisable(void *ident, int handle) {
     Mutex::Autolock _l(mLock);
     ssize_t activationIndex = mActivationCount.indexOfKey(handle);
@@ -651,19 +827,9 @@
         const hidl_vec<Event> &src,
         const hidl_vec<SensorInfo> &dynamicSensorsAdded,
         sensors_event_t *dst) {
-    // Allocate a sensor_t structure for each dynamic sensor added and insert
-    // it into the dictionary of connected dynamic sensors keyed by handle.
-    for (size_t i = 0; i < dynamicSensorsAdded.size(); ++i) {
-        const SensorInfo &info = dynamicSensorsAdded[i];
 
-        auto it = mConnectedDynamicSensors.find(info.sensorHandle);
-        CHECK(it == mConnectedDynamicSensors.end());
-
-        sensor_t *sensor = new sensor_t;
-        convertToSensor(info, sensor);
-
-        mConnectedDynamicSensors.insert(
-                std::make_pair(sensor->handle, sensor));
+    if (dynamicSensorsAdded.size() > 0) {
+        onDynamicSensorsConnected(dynamicSensorsAdded);
     }
 
     for (size_t i = 0; i < src.size(); ++i) {
diff --git a/services/sensorservice/SensorDevice.h b/services/sensorservice/SensorDevice.h
index 6d75051..2da60b6 100644
--- a/services/sensorservice/SensorDevice.h
+++ b/services/sensorservice/SensorDevice.h
@@ -19,20 +19,22 @@
 
 #include "SensorDeviceUtils.h"
 #include "SensorServiceUtils.h"
+#include "SensorsWrapper.h"
 
+#include <fmq/MessageQueue.h>
+#include <sensor/SensorEventQueue.h>
 #include <sensor/Sensor.h>
 #include <stdint.h>
 #include <sys/types.h>
 #include <utils/KeyedVector.h>
 #include <utils/Singleton.h>
 #include <utils/String8.h>
+#include <utils/Timers.h>
 
 #include <string>
 #include <unordered_map>
 #include <algorithm> //std::max std::min
 
-#include "android/hardware/sensors/1.0/ISensors.h"
-
 #include "RingBuffer.h"
 
 // ---------------------------------------------------------------------------
@@ -40,8 +42,13 @@
 namespace android {
 
 // ---------------------------------------------------------------------------
+class SensorsHalDeathReceivier : public android::hardware::hidl_death_recipient {
+    virtual void serviceDied(uint64_t cookie,
+                             const wp<::android::hidl::base::V1_0::IBase>& service) override;
+};
 
-class SensorDevice : public Singleton<SensorDevice>, public SensorServiceUtil::Dumpable {
+class SensorDevice : public Singleton<SensorDevice>,
+                     public SensorServiceUtil::Dumpable {
 public:
     class HidlTransportErrorLog {
      public:
@@ -69,6 +76,8 @@
         int mCount;   // number of transport errors observed
     };
 
+    ~SensorDevice();
+
     ssize_t getSensorList(sensor_t const** list);
 
     void handleDynamicSensorConnection(int handle, bool connected);
@@ -76,6 +85,7 @@
     int getHalDeviceVersion() const;
 
     ssize_t poll(sensors_event_t* buffer, size_t count);
+    void writeWakeLockHandled(uint32_t count);
 
     status_t activate(void* ident, int handle, int enabled);
     status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs,
@@ -98,12 +108,18 @@
     status_t injectSensorData(const sensors_event_t *event);
     void notifyConnectionDestroyed(void *ident);
 
+    using Result = ::android::hardware::sensors::V1_0::Result;
+    hardware::Return<void> onDynamicSensorsConnected(
+            const hardware::hidl_vec<hardware::sensors::V1_0::SensorInfo> &dynamicSensorsAdded);
+    hardware::Return<void> onDynamicSensorsDisconnected(
+            const hardware::hidl_vec<int32_t> &dynamicSensorHandlesRemoved);
+
     // Dumpable
     virtual std::string dump() const;
 private:
     friend class Singleton<SensorDevice>;
 
-    sp<hardware::sensors::V1_0::ISensors> mSensors;
+    sp<SensorServiceUtil::ISensorsWrapper> mSensors;
     Vector<sensor_t> mSensorList;
     std::unordered_map<int32_t, sensor_t*> mConnectedDynamicSensors;
 
@@ -164,6 +180,18 @@
     SensorDevice();
     bool connectHidlService();
 
+    enum HalConnectionStatus {
+        CONNECTED, // Successfully connected to the HAL
+        DOES_NOT_EXIST, // Could not find the HAL
+        FAILED_TO_CONNECT, // Found the HAL but failed to connect/initialize
+        UNKNOWN,
+    };
+    HalConnectionStatus connectHidlServiceV1_0();
+    HalConnectionStatus connectHidlServiceV2_0();
+
+    ssize_t pollHal(sensors_event_t* buffer, size_t count);
+    ssize_t pollFmq(sensors_event_t* buffer, size_t count);
+
     static void handleHidlDeath(const std::string &detail);
     template<typename T>
     static Return<T> checkReturn(Return<T> &&ret) {
@@ -189,6 +217,17 @@
             sensors_event_t *dst);
 
     bool mIsDirectReportSupported;
+
+    typedef hardware::MessageQueue<Event, hardware::kSynchronizedReadWrite> EventMessageQueue;
+    typedef hardware::MessageQueue<uint32_t, hardware::kSynchronizedReadWrite> WakeLockQueue;
+    std::unique_ptr<EventMessageQueue> mEventQueue;
+    std::unique_ptr<WakeLockQueue> mWakeLockQueue;
+
+    hardware::EventFlag* mEventQueueFlag;
+
+    std::array<Event, SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT> mEventBuffer;
+
+    sp<SensorsHalDeathReceivier> mSensorsHalDeathReceiver;
 };
 
 // ---------------------------------------------------------------------------
diff --git a/services/sensorservice/SensorEventConnection.cpp b/services/sensorservice/SensorEventConnection.cpp
index 956844f..0fb4ac6 100644
--- a/services/sensorservice/SensorEventConnection.cpp
+++ b/services/sensorservice/SensorEventConnection.cpp
@@ -31,7 +31,7 @@
         const sp<SensorService>& service, uid_t uid, String8 packageName, bool isDataInjectionMode,
         const String16& opPackageName, bool hasSensorAccess)
     : mService(service), mUid(uid), mWakeLockRefCount(0), mHasLooperCallbacks(false),
-      mDead(false), mDataInjectionMode(isDataInjectionMode), mEventCache(NULL),
+      mDead(false), mDataInjectionMode(isDataInjectionMode), mEventCache(nullptr),
       mCacheSize(0), mMaxCacheSize(0), mPackageName(packageName), mOpPackageName(opPackageName),
       mDestroyed(false), mHasSensorAccess(hasSensorAccess) {
     mChannel = new BitTube(mService->mSocketBufferSize);
@@ -55,8 +55,8 @@
     }
 
     mService->cleanupConnection(this);
-    if (mEventCache != NULL) {
-        delete mEventCache;
+    if (mEventCache != nullptr) {
+        delete[] mEventCache;
     }
     mDestroyed = true;
 }
@@ -200,7 +200,7 @@
 
     // Add the file descriptor to the Looper for receiving acknowledegments if the app has
     // registered for wake-up sensors OR for sending events in the cache.
-    int ret = looper->addFd(mChannel->getSendFd(), 0, looper_flags, this, NULL);
+    int ret = looper->addFd(mChannel->getSendFd(), 0, looper_flags, this, nullptr);
     if (ret == 1) {
         ALOGD_IF(DEBUG_CONNECTIONS, "%p addFd fd=%d", this, mChannel->getSendFd());
         mHasLooperCallbacks = true;
@@ -224,7 +224,7 @@
         wp<const SensorEventConnection> const * mapFlushEventsToConnections) {
     // filter out events not for this connection
 
-    sensors_event_t* sanitizedBuffer = nullptr;
+    std::unique_ptr<sensors_event_t[]> sanitizedBuffer;
 
     int count = 0;
     Mutex::Autolock _l(mConnectionLock);
@@ -293,7 +293,8 @@
             scratch = const_cast<sensors_event_t *>(buffer);
             count = numEvents;
         } else {
-            scratch = sanitizedBuffer = new sensors_event_t[numEvents];
+            sanitizedBuffer.reset(new sensors_event_t[numEvents]);
+            scratch = sanitizedBuffer.get();
             for (size_t i = 0; i < numEvents; i++) {
                 if (buffer[i].type == SENSOR_TYPE_META_DATA) {
                     scratch[count++] = buffer[i++];
@@ -305,7 +306,6 @@
     sendPendingFlushEventsLocked();
     // Early return if there are no events for this connection.
     if (count == 0) {
-        delete sanitizedBuffer;
         return status_t(NO_ERROR);
     }
 
@@ -323,7 +323,6 @@
             // the max cache size that is desired.
             if (mCacheSize + count < computeMaxCacheSizeLocked()) {
                 reAllocateCacheLocked(scratch, count);
-                delete sanitizedBuffer;
                 return status_t(NO_ERROR);
             }
             // Some events need to be dropped.
@@ -342,7 +341,6 @@
             memcpy(&mEventCache[mCacheSize - numEventsDropped], scratch + remaningCacheSize,
                                             numEventsDropped * sizeof(sensors_event_t));
         }
-        delete sanitizedBuffer;
         return status_t(NO_ERROR);
     }
 
@@ -373,7 +371,7 @@
             --mTotalAcksNeeded;
 #endif
         }
-        if (mEventCache == NULL) {
+        if (mEventCache == nullptr) {
             mMaxCacheSize = computeMaxCacheSizeLocked();
             mEventCache = new sensors_event_t[mMaxCacheSize];
             mCacheSize = 0;
@@ -384,7 +382,6 @@
         // Add this file descriptor to the looper to get a callback when this fd is available for
         // writing.
         updateLooperRegistrationLocked(mService->getLooper());
-        delete sanitizedBuffer;
         return size;
     }
 
@@ -394,7 +391,6 @@
     }
 #endif
 
-    delete sanitizedBuffer;
     return size < 0 ? status_t(size) : status_t(NO_ERROR);
 }
 
@@ -415,7 +411,7 @@
     ALOGD_IF(DEBUG_CONNECTIONS, "reAllocateCacheLocked maxCacheSize=%d %d", mMaxCacheSize,
             new_cache_size);
 
-    delete mEventCache;
+    delete[] mEventCache;
     mEventCache = eventCache_new;
     mCacheSize += count;
     mMaxCacheSize = new_cache_size;
diff --git a/services/sensorservice/SensorEventConnection.h b/services/sensorservice/SensorEventConnection.h
index 032721e..40c21ff 100644
--- a/services/sensorservice/SensorEventConnection.h
+++ b/services/sensorservice/SensorEventConnection.h
@@ -53,7 +53,7 @@
                           bool hasSensorAccess);
 
     status_t sendEvents(sensors_event_t const* buffer, size_t count, sensors_event_t* scratch,
-                        wp<const SensorEventConnection> const * mapFlushEventsToConnections = NULL);
+                        wp<const SensorEventConnection> const * mapFlushEventsToConnections = nullptr);
     bool hasSensor(int32_t handle) const;
     bool hasAnySensor() const;
     bool hasOneShotSensors() const;
diff --git a/services/sensorservice/SensorRecord.cpp b/services/sensorservice/SensorRecord.cpp
index 53fb9de..7c4c6a2 100644
--- a/services/sensorservice/SensorRecord.cpp
+++ b/services/sensorservice/SensorRecord.cpp
@@ -71,7 +71,7 @@
     if (mPendingFlushConnections.size() > 0) {
         return mPendingFlushConnections[0];
     }
-    return NULL;
+    return nullptr;
 }
 
 void SensorService::SensorRecord::clearAllPendingFlushConnections() {
diff --git a/services/sensorservice/SensorRegistrationInfo.h b/services/sensorservice/SensorRegistrationInfo.h
index bba8372..5411515 100644
--- a/services/sensorservice/SensorRegistrationInfo.h
+++ b/services/sensorservice/SensorRegistrationInfo.h
@@ -47,7 +47,7 @@
         mPid = (thread != nullptr) ? thread->getCallingPid() : -1;
         mUid = (thread != nullptr) ? thread->getCallingUid() : -1;
 
-        time_t rawtime = time(NULL);
+        time_t rawtime = time(nullptr);
         struct tm * timeinfo = localtime(&rawtime);
         mHour = static_cast<int8_t>(timeinfo->tm_hour);
         mMin = static_cast<int8_t>(timeinfo->tm_min);
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 8e9e7fd..f4e728b 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -47,6 +47,7 @@
 #include "SensorRecord.h"
 #include "SensorRegistrationInfo.h"
 
+#include <ctime>
 #include <inttypes.h>
 #include <math.h>
 #include <sched.h>
@@ -250,7 +251,7 @@
             // it to maxSystemSocketBufferSize if necessary.
             FILE *fp = fopen("/proc/sys/net/core/wmem_max", "r");
             char line[128];
-            if (fp != NULL && fgets(line, sizeof(line), fp) != NULL) {
+            if (fp != nullptr && fgets(line, sizeof(line), fp) != nullptr) {
                 line[sizeof(line) - 1] = '\0';
                 size_t maxSystemSocketBufferSize;
                 sscanf(line, "%zu", &maxSystemSocketBufferSize);
@@ -295,7 +296,7 @@
     {
         Mutex::Autolock _l(mLock);
         for (size_t i = 0 ; i < activeConnections.size(); i++) {
-            if (activeConnections[i] != 0 && activeConnections[i]->getUid() == uid) {
+            if (activeConnections[i] != nullptr && activeConnections[i]->getUid() == uid) {
                 activeConnections[i]->setSensorAccess(hasAccess);
             }
         }
@@ -306,7 +307,7 @@
     int handle = s->getSensor().getHandle();
     int type = s->getSensor().getType();
     if (mSensors.add(handle, s, isDebug, isVirtual)){
-        mRecentEvent.emplace(handle, new RecentEventLogger(type));
+        mRecentEvent.emplace(handle, new SensorServiceUtil::RecentEventLogger(type));
         return s->getSensor();
     } else {
         return mSensors.getNonSensor();
@@ -423,6 +424,11 @@
         } else {
             // Default dump the sensor list and debugging information.
             //
+            timespec curTime;
+            clock_gettime(CLOCK_REALTIME, &curTime);
+            struct tm* timeinfo = localtime(&(curTime.tv_sec));
+            result.appendFormat("Captured at: %02d:%02d:%02d.%03d\n", timeinfo->tm_hour,
+                                timeinfo->tm_min, timeinfo->tm_sec, (int)ns2ms(curTime.tv_nsec));
             result.append("Sensor Device:\n");
             result.append(SensorDevice::getInstance().dump().c_str());
 
@@ -475,7 +481,7 @@
             result.appendFormat("%zd active connections\n", mActiveConnections.size());
             for (size_t i=0 ; i < mActiveConnections.size() ; i++) {
                 sp<SensorEventConnection> connection(mActiveConnections[i].promote());
-                if (connection != 0) {
+                if (connection != nullptr) {
                     result.appendFormat("Connection Number: %zu \n", i);
                     connection->dump(result);
                 }
@@ -651,16 +657,18 @@
         // sending events to clients (incrementing SensorEventConnection::mWakeLockRefCount) should
         // not be interleaved with decrementing SensorEventConnection::mWakeLockRefCount and
         // releasing the wakelock.
-        bool bufferHasWakeUpEvent = false;
+        uint32_t wakeEvents = 0;
         for (int i = 0; i < count; i++) {
             if (isWakeUpSensorEvent(mSensorEventBuffer[i])) {
-                bufferHasWakeUpEvent = true;
-                break;
+                wakeEvents++;
             }
         }
 
-        if (bufferHasWakeUpEvent && !mWakeLockAcquired) {
-            setWakeLockAcquiredLocked(true);
+        if (wakeEvents > 0) {
+            if (!mWakeLockAcquired) {
+                setWakeLockAcquiredLocked(true);
+            }
+            device.writeWakeLockHandled(wakeEvents);
         }
         recordLastValueLocked(mSensorEventBuffer, count);
 
@@ -722,11 +730,11 @@
             // on the hardware sensor. mapFlushEventsToConnections[i] will be the
             // SensorEventConnection mapped to the corresponding flush_complete_event in
             // mSensorEventBuffer[i] if such a mapping exists (NULL otherwise).
-            mMapFlushEventsToConnections[i] = NULL;
+            mMapFlushEventsToConnections[i] = nullptr;
             if (mSensorEventBuffer[i].type == SENSOR_TYPE_META_DATA) {
                 const int sensor_handle = mSensorEventBuffer[i].meta_data.sensor;
                 SensorRecord* rec = mActiveSensors.valueFor(sensor_handle);
-                if (rec != NULL) {
+                if (rec != nullptr) {
                     mMapFlushEventsToConnections[i] = rec->getFirstPendingFlushConnection();
                     rec->removeFirstPendingFlushConnection();
                 }
@@ -770,7 +778,7 @@
 
                     size_t numConnections = activeConnections.size();
                     for (size_t i=0 ; i < numConnections; ++i) {
-                        if (activeConnections[i] != NULL) {
+                        if (activeConnections[i] != nullptr) {
                             activeConnections[i]->removeSensor(handle);
                         }
                     }
@@ -783,7 +791,7 @@
         bool needsWakeLock = false;
         size_t numConnections = activeConnections.size();
         for (size_t i=0 ; i < numConnections; ++i) {
-            if (activeConnections[i] != 0) {
+            if (activeConnections[i] != nullptr) {
                 activeConnections[i]->sendEvents(mSensorEventBuffer, count, mSensorEventScratch,
                         mMapFlushEventsToConnections);
                 needsWakeLock |= activeConnections[i]->needsWakeLock();
@@ -816,7 +824,7 @@
     {
         Mutex::Autolock _l(mLock);
         for (size_t i=0 ; i < activeConnections.size(); ++i) {
-            if (activeConnections[i] != 0) {
+            if (activeConnections[i] != nullptr) {
                 activeConnections[i]->resetWakeLockRefCount();
             }
         }
@@ -1021,15 +1029,15 @@
         int requestedMode, const String16& opPackageName) {
     // Only 2 modes supported for a SensorEventConnection ... NORMAL and DATA_INJECTION.
     if (requestedMode != NORMAL && requestedMode != DATA_INJECTION) {
-        return NULL;
+        return nullptr;
     }
 
     Mutex::Autolock _l(mLock);
     // To create a client in DATA_INJECTION mode to inject data, SensorService should already be
     // operating in DI mode.
     if (requestedMode == DATA_INJECTION) {
-        if (mCurrentOperatingMode != DATA_INJECTION) return NULL;
-        if (!isWhiteListedPackage(packageName)) return NULL;
+        if (mCurrentOperatingMode != DATA_INJECTION) return nullptr;
+        if (!isWhiteListedPackage(packageName)) return nullptr;
     }
 
     uid_t uid = IPCThreadState::self()->getCallingUid();
@@ -1325,7 +1333,7 @@
     }
 
     SensorRecord* rec = mActiveSensors.valueFor(handle);
-    if (rec == 0) {
+    if (rec == nullptr) {
         rec = new SensorRecord(connection);
         mActiveSensors.add(handle, rec);
         if (sensor->isVirtual()) {
@@ -1352,7 +1360,7 @@
                             if (isWakeUpSensorEvent(event) && !mWakeLockAcquired) {
                                 setWakeLockAcquiredLocked(true);
                             }
-                            connection->sendEvents(&event, 1, NULL);
+                            connection->sendEvents(&event, 1, nullptr);
                             if (!connection->needsWakeLock() && mWakeLockAcquired) {
                                 checkWakeLockStateLocked();
                             }
@@ -1534,7 +1542,7 @@
             status_t err_flush = sensor->flush(connection.get(), handle);
             if (err_flush == NO_ERROR) {
                 SensorRecord* rec = mActiveSensors.valueFor(handle);
-                if (rec != NULL) rec->addPendingFlushConnection(connection);
+                if (rec != nullptr) rec->addPendingFlushConnection(connection);
             }
             err = (err_flush != NO_ERROR) ? err_flush : err;
         }
@@ -1592,7 +1600,7 @@
     bool releaseLock = true;
     for (size_t i=0 ; i<mActiveConnections.size() ; i++) {
         sp<SensorEventConnection> connection(mActiveConnections[i].promote());
-        if (connection != 0) {
+        if (connection != nullptr) {
             if (connection->needsWakeLock()) {
                 releaseLock = false;
                 break;
@@ -1617,7 +1625,7 @@
     Mutex::Autolock _l(mLock);
     for (size_t i=0 ; i < mActiveConnections.size(); ++i) {
         sp<SensorEventConnection> connection(mActiveConnections[i].promote());
-        if (connection != 0) {
+        if (connection != nullptr) {
             activeConnections->add(connection);
         }
     }
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
index f71723d..db945bb 100644
--- a/services/sensorservice/SensorService.h
+++ b/services/sensorservice/SensorService.h
@@ -59,7 +59,6 @@
 namespace android {
 // ---------------------------------------------------------------------------
 class SensorInterface;
-using namespace SensorServiceUtil;
 
 class SensorService :
         public BinderService<SensorService>,
@@ -277,7 +276,7 @@
     static uint8_t sHmacGlobalKey[128];
     static bool sHmacGlobalKeyIsValid;
 
-    SensorList mSensors;
+    SensorServiceUtil::SensorList mSensors;
     status_t mInitCheck;
 
     // Socket buffersize used to initialize BitTube. This size depends on whether batching is
@@ -294,7 +293,7 @@
     bool mWakeLockAcquired;
     sensors_event_t *mSensorEventBuffer, *mSensorEventScratch;
     wp<const SensorEventConnection> * mMapFlushEventsToConnections;
-    std::unordered_map<int, RecentEventLogger*> mRecentEvent;
+    std::unordered_map<int, SensorServiceUtil::RecentEventLogger*> mRecentEvent;
     SortedVector< wp<SensorDirectConnection> > mDirectConnections;
     Mode mCurrentOperatingMode;
 
diff --git a/services/sensorservice/SensorsWrapper.h b/services/sensorservice/SensorsWrapper.h
new file mode 100644
index 0000000..d1a7234
--- /dev/null
+++ b/services/sensorservice/SensorsWrapper.h
@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SENSORS_WRAPPER_H
+#define ANDROID_SENSORS_WRAPPER_H
+
+#include "android/hardware/sensors/1.0/ISensors.h"
+#include "android/hardware/sensors/2.0/ISensors.h"
+#include "android/hardware/sensors/2.0/ISensorsCallback.h"
+
+#include <utils/LightRefBase.h>
+
+namespace android {
+namespace SensorServiceUtil {
+
+using ::android::hardware::MQDescriptorSync;
+using ::android::hardware::Return;
+using ::android::hardware::sensors::V1_0::Event;
+using ::android::hardware::sensors::V1_0::ISensors;
+using ::android::hardware::sensors::V1_0::OperationMode;
+using ::android::hardware::sensors::V1_0::RateLevel;
+using ::android::hardware::sensors::V1_0::Result;
+using ::android::hardware::sensors::V1_0::SharedMemInfo;
+using ::android::hardware::sensors::V2_0::ISensorsCallback;
+
+/*
+ * The ISensorsWrapper interface includes all function from supported Sensors HAL versions. This
+ * allows for the SensorDevice to use the ISensorsWrapper interface to interact with the Sensors
+ * HAL regardless of the current version of the Sensors HAL that is loaded. Each concrete
+ * instantiation of ISensorsWrapper must correspond to a specific Sensors HAL version. This design
+ * is beneficial because only the functions that change between Sensors HAL versions must be newly
+ * newly implemented, any previously implemented function that does not change may remain the same.
+ *
+ * Functions that exist across all versions of the Sensors HAL should be implemented as pure
+ * virtual functions which forces the concrete instantiations to implement the functions.
+ *
+ * Functions that do not exist across all versions of the Sensors HAL should include a default
+ * implementation that generates an error if called. The default implementation should never
+ * be called and must be overridden by Sensors HAL versions that support the function.
+ */
+class ISensorsWrapper : public VirtualLightRefBase {
+public:
+    virtual bool supportsPolling() const = 0;
+
+    virtual bool supportsMessageQueues() const = 0;
+
+    virtual Return<void> getSensorsList(ISensors::getSensorsList_cb _hidl_cb) = 0;
+
+    virtual Return<Result> setOperationMode(OperationMode mode) = 0;
+
+    virtual Return<Result> activate(int32_t sensorHandle, bool enabled) = 0;
+
+    virtual Return<Result> batch(int32_t sensorHandle, int64_t samplingPeriodNs,
+                                 int64_t maxReportLatencyNs) = 0;
+
+    virtual Return<Result> flush(int32_t sensorHandle) = 0;
+
+    virtual Return<Result> injectSensorData(const Event& event) = 0;
+
+    virtual Return<void> registerDirectChannel(const SharedMemInfo& mem,
+                                               ISensors::registerDirectChannel_cb _hidl_cb) = 0;
+
+    virtual Return<Result> unregisterDirectChannel(int32_t channelHandle) = 0;
+
+    virtual Return<void> configDirectReport(int32_t sensorHandle, int32_t channelHandle,
+                                            RateLevel rate,
+                                            ISensors::configDirectReport_cb _hidl_cb) = 0;
+
+    virtual Return<void> poll(int32_t maxCount, ISensors::poll_cb _hidl_cb) {
+        (void)maxCount;
+        (void)_hidl_cb;
+        // TODO (b/111070257): Generate an assert-level error since this should never be called
+        // directly
+        return Return<void>();
+    }
+
+    virtual Return<Result> initialize(const MQDescriptorSync<Event>& eventQueueDesc,
+                                      const MQDescriptorSync<uint32_t>& wakeLockDesc,
+                                      const ::android::sp<ISensorsCallback>& callback) {
+        (void)eventQueueDesc;
+        (void)wakeLockDesc;
+        (void)callback;
+        // TODO (b/111070257): Generate an assert-level error since this should never be called
+        // directly
+        return Result::INVALID_OPERATION;
+    }
+};
+
+template<typename T>
+class SensorsWrapperBase : public ISensorsWrapper {
+public:
+    SensorsWrapperBase(sp<T> sensors) :
+        mSensors(sensors) { };
+
+    Return<void> getSensorsList(ISensors::getSensorsList_cb _hidl_cb) override {
+        return mSensors->getSensorsList(_hidl_cb);
+    }
+
+    Return<Result> setOperationMode(OperationMode mode) override {
+        return mSensors->setOperationMode(mode);
+    }
+
+    Return<Result> activate(int32_t sensorHandle, bool enabled) override {
+        return mSensors->activate(sensorHandle, enabled);
+    }
+
+    Return<Result> batch(int32_t sensorHandle, int64_t samplingPeriodNs,
+                         int64_t maxReportLatencyNs) override {
+        return mSensors->batch(sensorHandle, samplingPeriodNs, maxReportLatencyNs);
+    }
+
+    Return<Result> flush(int32_t sensorHandle) override {
+        return mSensors->flush(sensorHandle);
+    }
+
+    Return<Result> injectSensorData(const Event& event) override {
+        return mSensors->injectSensorData(event);
+    }
+
+    Return<void> registerDirectChannel(const SharedMemInfo& mem,
+                                       ISensors::registerDirectChannel_cb _hidl_cb) override {
+        return mSensors->registerDirectChannel(mem, _hidl_cb);
+    }
+
+    Return<Result> unregisterDirectChannel(int32_t channelHandle) override {
+        return mSensors->unregisterDirectChannel(channelHandle);
+    }
+
+    Return<void> configDirectReport(int32_t sensorHandle, int32_t channelHandle,
+                                    RateLevel rate,
+                                    ISensors::configDirectReport_cb _hidl_cb) override {
+        return mSensors->configDirectReport(sensorHandle, channelHandle, rate, _hidl_cb);
+    }
+
+protected:
+    sp<T> mSensors;
+};
+
+class SensorsWrapperV1_0 : public SensorsWrapperBase<hardware::sensors::V1_0::ISensors> {
+public:
+    SensorsWrapperV1_0(sp<hardware::sensors::V1_0::ISensors> sensors) :
+        SensorsWrapperBase(sensors) { };
+
+    bool supportsPolling() const override {
+        return true;
+    }
+
+    bool supportsMessageQueues() const override {
+        return false;
+    }
+
+    Return<void> poll(int32_t maxCount,
+                      hardware::sensors::V1_0::ISensors::poll_cb _hidl_cb) override {
+        return mSensors->poll(maxCount, _hidl_cb);
+    }
+};
+
+class SensorsWrapperV2_0 : public SensorsWrapperBase<hardware::sensors::V2_0::ISensors> {
+public:
+    SensorsWrapperV2_0(sp<hardware::sensors::V2_0::ISensors> sensors)
+        : SensorsWrapperBase(sensors) { };
+
+    bool supportsPolling() const override {
+        return false;
+    }
+
+    bool supportsMessageQueues() const override {
+        return true;
+    }
+
+    Return<Result> initialize(const MQDescriptorSync<Event>& eventQueueDesc,
+                              const MQDescriptorSync<uint32_t>& wakeLockDesc,
+                              const ::android::sp<ISensorsCallback>& callback) override {
+        return mSensors->initialize(eventQueueDesc, wakeLockDesc, callback);
+    }
+};
+
+}; // namespace SensorServiceUtil
+}; // namespace android
+
+#endif // ANDROID_SENSORS_WRAPPER_H
diff --git a/services/sensorservice/hidl/EventQueue.cpp b/services/sensorservice/hidl/EventQueue.cpp
index ff20066..b781744 100644
--- a/services/sensorservice/hidl/EventQueue.cpp
+++ b/services/sensorservice/hidl/EventQueue.cpp
@@ -64,7 +64,7 @@
               mInternalQueue(internalQueue) {
 
     mLooper->addFd(internalQueue->getFd(), ALOOPER_POLL_CALLBACK, ALOOPER_EVENT_INPUT,
-            new EventQueueLooperCallback(internalQueue, callback), NULL /* data */);
+            new EventQueueLooperCallback(internalQueue, callback), nullptr /* data */);
 }
 
 void EventQueue::onLastStrongRef(const void *id) {
diff --git a/services/sensorservice/hidl/SensorManager.cpp b/services/sensorservice/hidl/SensorManager.cpp
index fee6da1..9380600 100644
--- a/services/sensorservice/hidl/SensorManager.cpp
+++ b/services/sensorservice/hidl/SensorManager.cpp
@@ -157,7 +157,7 @@
             JavaVMAttachArgs args{
                 .version = JNI_VERSION_1_2,
                 .name = POLL_THREAD_NAME,
-                .group = NULL
+                .group = nullptr
             };
             JNIEnv* env;
             if (javaVm->AttachCurrentThread(&env, &args) != JNI_OK) {
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 320e11f..339f83b 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -4,6 +4,7 @@
         "-DLOG_TAG=\"SurfaceFlinger\"",
         "-Wall",
         "-Werror",
+        "-Wformat",
         "-Wthread-safety",
         "-Wunused",
         "-Wunreachable-code",
@@ -18,14 +19,20 @@
         "-DGL_GLEXT_PROTOTYPES",
         "-DEGL_EGLEXT_PROTOTYPES",
     ],
+    include_dirs: [
+        "frameworks/native/vulkan/vkjson",
+        "frameworks/native/vulkan/include",
+    ],
     shared_libs: [
         "android.frameworks.vr.composer@1.0",
         "android.hardware.configstore-utils",
         "android.hardware.configstore@1.0",
         "android.hardware.configstore@1.1",
+        "android.hardware.configstore@1.2",
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
         "android.hardware.power@1.0",
         "android.hardware.power@1.3",
         "libbase",
@@ -44,6 +51,7 @@
         "libhwbinder",
         "liblayers_proto",
         "liblog",
+    	"libnativewindow",
         "libpdx_default_transport",
         "libprotobuf-cpp-lite",
         "libsync",
@@ -53,6 +61,7 @@
         "libvulkan",
     ],
     static_libs: [
+        "librenderengine",
         "libserviceutils",
         "libtrace_proto",
         "libvkjson",
@@ -62,14 +71,17 @@
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
     ],
     export_static_lib_headers: [
+        "librenderengine",
         "libserviceutils",
     ],
     export_shared_lib_headers: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
         "android.hardware.power@1.3",
         "libhidlbase",
         "libhidltransport",
@@ -77,6 +89,18 @@
     ],
 }
 
+cc_defaults {
+    name: "libsurfaceflinger_production_defaults",
+    defaults: ["libsurfaceflinger_defaults"],
+    cflags: [
+        "-fvisibility=hidden",
+        "-fwhole-program-vtables", // requires ThinLTO
+    ],
+    lto: {
+        thin: true,
+    },
+}
+
 cc_library_headers {
     name: "libsurfaceflinger_headers",
     export_include_dirs: ["."],
@@ -89,79 +113,65 @@
     srcs: [
         "BufferLayer.cpp",
         "BufferLayerConsumer.cpp",
+        "BufferQueueLayer.cpp",
+        "BufferStateLayer.cpp",
         "Client.cpp",
         "ColorLayer.cpp",
         "ContainerLayer.cpp",
         "DisplayDevice.cpp",
         "DisplayHardware/ComposerHal.cpp",
+        "DisplayHardware/DisplayIdentification.cpp",
         "DisplayHardware/FramebufferSurface.cpp",
         "DisplayHardware/HWC2.cpp",
         "DisplayHardware/HWComposer.cpp",
         "DisplayHardware/HWComposerBufferCache.cpp",
         "DisplayHardware/PowerAdvisor.cpp",
         "DisplayHardware/VirtualDisplaySurface.cpp",
-        "DispSync.cpp",
         "Effects/Daltonizer.cpp",
-        "EventControlThread.cpp",
         "EventLog/EventLog.cpp",
-        "EventThread.cpp",
         "FrameTracker.cpp",
         "GpuService.cpp",
         "Layer.cpp",
+        "LayerBE.cpp",
         "LayerProtoHelper.cpp",
         "LayerRejecter.cpp",
         "LayerStats.cpp",
         "LayerVector.cpp",
-        "MessageQueue.cpp",
         "MonitoredProducer.cpp",
+        "NativeWindowSurface.cpp",
         "RenderArea.cpp",
-        "RenderEngine/Description.cpp",
-        "RenderEngine/GLES20RenderEngine.cpp",
-        "RenderEngine/GLExtensions.cpp",
-        "RenderEngine/Image.cpp",
-        "RenderEngine/Mesh.cpp",
-        "RenderEngine/Program.cpp",
-        "RenderEngine/ProgramCache.cpp",
-        "RenderEngine/RenderEngine.cpp",
-        "RenderEngine/Surface.cpp",
-        "RenderEngine/Texture.cpp",
+        "Scheduler/DispSync.cpp",
+        "Scheduler/DispSyncSource.cpp",
+        "Scheduler/EventControlThread.cpp",
+        "Scheduler/EventThread.cpp",
+        "Scheduler/MessageQueue.cpp",
+        "Scheduler/Scheduler.cpp",
         "StartPropertySetThread.cpp",
         "SurfaceFlinger.cpp",
         "SurfaceInterceptor.cpp",
         "SurfaceTracing.cpp",
         "TimeStats/TimeStats.cpp",
-        "Transform.cpp",
     ],
 }
 
 cc_library_shared {
+    // Please use libsurfaceflinger_defaults to configure how the sources are
+    // built, so the same settings can be used elsewhere.
     name: "libsurfaceflinger",
-    defaults: ["libsurfaceflinger_defaults"],
-    cflags: [
-        "-fvisibility=hidden",
-        "-Werror=format",
-    ],
+    defaults: ["libsurfaceflinger_production_defaults"],
     srcs: [
         ":libsurfaceflinger_sources",
+
+        // Note: SurfaceFlingerFactory is not in the default sources so that it
+        // can be easily replaced.
+        "SurfaceFlingerFactory.cpp",
     ],
     logtags: ["EventLog/EventLogTags.logtags"],
-    include_dirs: [
-        "frameworks/native/vulkan/vkjson",
-        "frameworks/native/vulkan/include",
-    ],
-    cppflags: [
-        "-fwhole-program-vtables", // requires ThinLTO
-    ],
-    lto: {
-        thin: true,
-    },
 }
 
-cc_binary {
-    name: "surfaceflinger",
+cc_defaults {
+    name: "libsurfaceflinger_binary",
     defaults: ["surfaceflinger_defaults"],
-    init_rc: ["surfaceflinger.rc"],
-    srcs: ["main_surfaceflinger.cpp"],
     whole_static_libs: [
         "libsigchain",
     ],
@@ -169,6 +179,7 @@
         "android.frameworks.displayservice@1.0",
         "android.hardware.configstore-utils",
         "android.hardware.configstore@1.0",
+        "android.hardware.configstore@1.2",
         "android.hardware.graphics.allocator@2.0",
         "libbinder",
         "libcutils",
@@ -177,7 +188,6 @@
         "libhidltransport",
         "liblayers_proto",
         "liblog",
-        "libsurfaceflinger",
         "libtimestats_proto",
         "libutils",
     ],
@@ -186,19 +196,19 @@
         "libtrace_proto",
     ],
     ldflags: ["-Wl,--export-dynamic"],
+}
 
-    // TODO(b/71715793): These version-scripts are required due to the use of
-    // whole_static_libs to pull in libsigchain. To work, the files had to be
-    // locally duplicated from their original location
-    // $ANDROID_ROOT/art/sigchainlib/
-    multilib: {
-        lib32: {
-            version_script: "version-script32.txt",
-        },
-        lib64: {
-            version_script: "version-script64.txt",
-        },
-    },
+filegroup {
+    name: "surfaceflinger_binary_sources",
+    srcs: ["main_surfaceflinger.cpp"],
+}
+
+cc_binary {
+    name: "surfaceflinger",
+    defaults: ["libsurfaceflinger_binary"],
+    init_rc: ["surfaceflinger.rc"],
+    srcs: [":surfaceflinger_binary_sources"],
+    shared_libs: ["libsurfaceflinger"],
 }
 
 cc_library_shared {
diff --git a/services/surfaceflinger/Barrier.h b/services/surfaceflinger/Barrier.h
index 3e9d443..97028a8 100644
--- a/services/surfaceflinger/Barrier.h
+++ b/services/surfaceflinger/Barrier.h
@@ -18,46 +18,40 @@
 #define ANDROID_BARRIER_H
 
 #include <stdint.h>
-#include <sys/types.h>
-#include <utils/threads.h>
+#include <condition_variable>
+#include <mutex>
 
 namespace android {
 
 class Barrier
 {
 public:
-    inline Barrier() : state(CLOSED) { }
-    inline ~Barrier() { }
-
     // Release any threads waiting at the Barrier.
     // Provides release semantics: preceding loads and stores will be visible
     // to other threads before they wake up.
     void open() {
-        Mutex::Autolock _l(lock);
-        state = OPENED;
-        cv.broadcast();
+        std::lock_guard<std::mutex> lock(mMutex);
+        mIsOpen = true;
+        mCondition.notify_all();
     }
 
     // Reset the Barrier, so wait() will block until open() has been called.
     void close() {
-        Mutex::Autolock _l(lock);
-        state = CLOSED;
+        std::lock_guard<std::mutex> lock(mMutex);
+        mIsOpen = false;
     }
 
     // Wait until the Barrier is OPEN.
     // Provides acquire semantics: no subsequent loads or stores will occur
     // until wait() returns.
     void wait() const {
-        Mutex::Autolock _l(lock);
-        while (state == CLOSED) {
-            cv.wait(lock);
-        }
+        std::unique_lock<std::mutex> lock(mMutex);
+        mCondition.wait(lock, [this]() NO_THREAD_SAFETY_ANALYSIS { return mIsOpen; });
     }
 private:
-    enum { OPENED, CLOSED };
-    mutable     Mutex       lock;
-    mutable     Condition   cv;
-    volatile    int         state;
+    mutable std::mutex mMutex;
+    mutable std::condition_variable mCondition;
+    int mIsOpen GUARDED_BY(mMutex){false};
 };
 
 }; // namespace android
diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index f5b5eda..cafe26b 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -23,9 +23,8 @@
 #include "Colorizer.h"
 #include "DisplayDevice.h"
 #include "LayerRejecter.h"
-#include "clz.h"
 
-#include "RenderEngine/RenderEngine.h"
+#include <renderengine/RenderEngine.h>
 
 #include <gui/BufferItem.h>
 #include <gui/BufferQueue.h>
@@ -50,28 +49,16 @@
 
 namespace android {
 
-BufferLayer::BufferLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name,
-                         uint32_t w, uint32_t h, uint32_t flags)
-      : Layer(flinger, client, name, w, h, flags),
-        mConsumer(nullptr),
-        mTextureName(UINT32_MAX),
-        mFormat(PIXEL_FORMAT_NONE),
-        mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
-        mBufferLatched(false),
-        mPreviousFrameNumber(0),
-        mUpdateTexImageFailed(false),
-        mRefreshPending(false) {
-    ALOGV("Creating Layer %s", name.string());
+BufferLayer::BufferLayer(const LayerCreationArgs& args)
+      : Layer(args), mTextureName(args.flinger->getNewTexture()) {
+    ALOGV("Creating Layer %s", args.name.string());
 
-    mTextureName = mFlinger->getNewTexture();
-    mTexture.init(Texture::TEXTURE_EXTERNAL, mTextureName);
+    mTexture.init(renderengine::Texture::TEXTURE_EXTERNAL, mTextureName);
 
-    if (flags & ISurfaceComposerClient::eNonPremultiplied) mPremultipliedAlpha = false;
+    mPremultipliedAlpha = !(args.flags & ISurfaceComposerClient::eNonPremultiplied);
 
-    mCurrentState.requested = mCurrentState.active;
-
-    // drawing state & current state are identical
-    mDrawingState = mCurrentState;
+    mPotentialCursor = args.flags & ISurfaceComposerClient::eCursorWindow;
+    mProtectedByApp = args.flags & ISurfaceComposerClient::eProtectedByApp;
 }
 
 BufferLayer::~BufferLayer() {
@@ -89,7 +76,7 @@
     if (mFlinger->mForceFullDamage) {
         surfaceDamageRegion = Region::INVALID_REGION;
     } else {
-        surfaceDamageRegion = mConsumer->getSurfaceDamage();
+        surfaceDamageRegion = getDrawingSurfaceDamage();
     }
 }
 
@@ -97,46 +84,27 @@
     surfaceDamageRegion.clear();
 }
 
-bool BufferLayer::isProtected() const {
-    const sp<GraphicBuffer>& buffer(getBE().compositionInfo.mBuffer);
-    return (buffer != 0) &&
-            (buffer->getUsage() & GRALLOC_USAGE_PROTECTED);
+bool BufferLayer::isOpaque(const Layer::State& s) const {
+    // if we don't have a buffer or sidebandStream yet, we're translucent regardless of the
+    // layer's opaque flag.
+    if ((getBE().compositionInfo.hwc.sidebandStream == nullptr) && (mActiveBuffer == nullptr)) {
+        return false;
+    }
+
+    // if the layer has the opaque flag, then we're always opaque,
+    // otherwise we use the current buffer's format.
+    return ((s.flags & layer_state_t::eLayerOpaque) != 0) || getOpacityForFormat(getPixelFormat());
 }
 
 bool BufferLayer::isVisible() const {
     return !(isHiddenByPolicy()) && getAlpha() > 0.0f &&
-            (getBE().compositionInfo.mBuffer != nullptr ||
-             getBE().compositionInfo.hwc.sidebandStream != nullptr);
+            (mActiveBuffer != nullptr || getBE().compositionInfo.hwc.sidebandStream != nullptr);
 }
 
 bool BufferLayer::isFixedSize() const {
     return getEffectiveScalingMode() != NATIVE_WINDOW_SCALING_MODE_FREEZE;
 }
 
-status_t BufferLayer::setBuffers(uint32_t w, uint32_t h, PixelFormat format, uint32_t flags) {
-    uint32_t const maxSurfaceDims =
-            min(mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims());
-
-    // never allow a surface larger than what our underlying GL implementation
-    // can handle.
-    if ((uint32_t(w) > maxSurfaceDims) || (uint32_t(h) > maxSurfaceDims)) {
-        ALOGE("dimensions too large %u x %u", uint32_t(w), uint32_t(h));
-        return BAD_VALUE;
-    }
-
-    mFormat = format;
-
-    mPotentialCursor = (flags & ISurfaceComposerClient::eCursorWindow) ? true : false;
-    mProtectedByApp = (flags & ISurfaceComposerClient::eProtectedByApp) ? true : false;
-    mCurrentOpacity = getOpacityForFormat(format);
-
-    mConsumer->setDefaultBufferSize(w, h);
-    mConsumer->setDefaultBufferFormat(format);
-    mConsumer->setConsumerUsageBits(getEffectiveUsage(0));
-
-    return NO_ERROR;
-}
-
 static constexpr mat4 inverseOrientation(uint32_t transform) {
     const mat4 flipH(-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1);
     const mat4 flipV(1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1);
@@ -159,10 +127,10 @@
  * onDraw will draw the current layer onto the presentable buffer
  */
 void BufferLayer::onDraw(const RenderArea& renderArea, const Region& clip,
-                         bool useIdentityTransform) const {
+                         bool useIdentityTransform) {
     ATRACE_CALL();
 
-    if (CC_UNLIKELY(getBE().compositionInfo.mBuffer == 0)) {
+    if (CC_UNLIKELY(mActiveBuffer == 0)) {
         // the texture has not been created yet, this Layer has
         // in fact never been drawn into. This happens frequently with
         // SurfaceView because the WindowManager can't know when the client
@@ -191,7 +159,7 @@
 
     // Bind the current buffer to the GL texture, and wait for it to be
     // ready for us to draw into.
-    status_t err = mConsumer->bindTextureImage();
+    status_t err = bindTextureImage();
     if (err != NO_ERROR) {
         ALOGW("onDraw: bindTextureImage failed (err=%d)", err);
         // Go ahead and draw the buffer anyway; no matter what we do the screen
@@ -204,12 +172,12 @@
 
     if (!blackOutLayer) {
         // TODO: we could be more subtle with isFixedSize()
-        const bool useFiltering = getFiltering() || needsFiltering(renderArea) || isFixedSize();
+        const bool useFiltering = needsFiltering(renderArea) || isFixedSize();
 
         // Query the texture matrix given our current filtering mode.
         float textureMatrix[16];
-        mConsumer->setFilteringEnabled(useFiltering);
-        mConsumer->getTransformMatrix(textureMatrix);
+        setFilteringEnabled(useFiltering);
+        getDrawingTransformMatrix(textureMatrix);
 
         if (getTransformToDisplayInverse()) {
             /*
@@ -240,8 +208,7 @@
         }
 
         // Set things up for texturing.
-        mTexture.setDimensions(getBE().compositionInfo.mBuffer->getWidth(),
-                               getBE().compositionInfo.mBuffer->getHeight());
+        mTexture.setDimensions(mActiveBuffer->getWidth(), mActiveBuffer->getHeight());
         mTexture.setFiltering(useFiltering);
         mTexture.setMatrix(textureMatrix);
 
@@ -253,54 +220,62 @@
     engine.disableTexturing();
 }
 
-void BufferLayer::onLayerDisplayed(const sp<Fence>& releaseFence) {
-    mConsumer->setReleaseFence(releaseFence);
+bool BufferLayer::isHdrY410() const {
+    // pixel format is HDR Y410 masquerading as RGBA_1010102
+    return (mCurrentDataSpace == ui::Dataspace::BT2020_ITU_PQ &&
+            getDrawingApi() == NATIVE_WINDOW_API_MEDIA &&
+            getBE().compositionInfo.mBuffer->getPixelFormat() == HAL_PIXEL_FORMAT_RGBA_1010102);
 }
 
-void BufferLayer::abandon() {
-    mConsumer->abandon();
-}
+void BufferLayer::setPerFrameData(const sp<const DisplayDevice>& display) {
+    // Apply this display's projection's viewport to the visible region
+    // before giving it to the HWC HAL.
+    const ui::Transform& tr = display->getTransform();
+    const auto& viewport = display->getViewport();
+    Region visible = tr.transform(visibleRegion.intersect(viewport));
+    const auto displayId = display->getId();
+    getBE().compositionInfo.hwc.visibleRegion = visible;
+    getBE().compositionInfo.hwc.surfaceDamage = surfaceDamageRegion;
 
-bool BufferLayer::shouldPresentNow(const DispSync& dispSync) const {
-    if (mSidebandStreamChanged || mAutoRefresh) {
-        return true;
+    // Sideband layers
+    if (getBE().compositionInfo.hwc.sidebandStream.get()) {
+        setCompositionType(displayId, HWC2::Composition::Sideband);
+        getBE().compositionInfo.compositionType = HWC2::Composition::Sideband;
+        return;
     }
 
-    Mutex::Autolock lock(mQueueItemLock);
-    if (mQueueItems.empty()) {
-        return false;
+    if (getBE().compositionInfo.hwc.skipGeometry) {
+        // Device or Cursor layers
+        if (mPotentialCursor) {
+            ALOGV("[%s] Requesting Cursor composition", mName.string());
+            setCompositionType(displayId, HWC2::Composition::Cursor);
+        } else {
+            ALOGV("[%s] Requesting Device composition", mName.string());
+            setCompositionType(displayId, HWC2::Composition::Device);
+        }
     }
-    auto timestamp = mQueueItems[0].mTimestamp;
-    nsecs_t expectedPresent = mConsumer->computeExpectedPresent(dispSync);
 
-    // Ignore timestamps more than a second in the future
-    bool isPlausible = timestamp < (expectedPresent + s2ns(1));
-    ALOGW_IF(!isPlausible,
-             "[%s] Timestamp %" PRId64 " seems implausible "
-             "relative to expectedPresent %" PRId64,
-             mName.string(), timestamp, expectedPresent);
+    getBE().compositionInfo.hwc.dataspace = mCurrentDataSpace;
+    getBE().compositionInfo.hwc.hdrMetadata = getDrawingHdrMetadata();
+    getBE().compositionInfo.hwc.supportedPerFrameMetadata = display->getSupportedPerFrameMetadata();
+    getBE().compositionInfo.hwc.colorTransform = getColorTransform();
 
-    bool isDue = timestamp < expectedPresent;
-    return isDue || !isPlausible;
-}
-
-void BufferLayer::setTransformHint(uint32_t orientation) const {
-    mConsumer->setTransformHint(orientation);
+    setHwcLayerBuffer(display);
 }
 
 bool BufferLayer::onPreComposition(nsecs_t refreshStartTime) {
     if (mBufferLatched) {
         Mutex::Autolock lock(mFrameEventHistoryMutex);
-        mFrameEventHistory.addPreComposition(mCurrentFrameNumber,
-                                             refreshStartTime);
+        mFrameEventHistory.addPreComposition(mCurrentFrameNumber, refreshStartTime);
     }
     mRefreshPending = false;
-    return mQueuedFrames > 0 || mSidebandStreamChanged ||
-            mAutoRefresh;
+    return hasReadyFrame();
 }
+
 bool BufferLayer::onPostComposition(const std::shared_ptr<FenceTime>& glDoneFence,
                                     const std::shared_ptr<FenceTime>& presentFence,
                                     const CompositorTiming& compositorTiming) {
+
     // mFrameLatencyNeeded is true when a new frame was latched for the
     // composition.
     if (!mFrameLatencyNeeded) return false;
@@ -308,18 +283,18 @@
     // Update mFrameEventHistory.
     {
         Mutex::Autolock lock(mFrameEventHistoryMutex);
-        mFrameEventHistory.addPostComposition(mCurrentFrameNumber, glDoneFence,
-                                              presentFence, compositorTiming);
+        mFrameEventHistory.addPostComposition(mCurrentFrameNumber, glDoneFence, presentFence,
+                                              compositorTiming);
     }
 
     // Update mFrameTracker.
-    nsecs_t desiredPresentTime = mConsumer->getTimestamp();
+    nsecs_t desiredPresentTime = getDesiredPresentTime();
     mFrameTracker.setDesiredPresentTime(desiredPresentTime);
 
     const std::string layerName(getName().c_str());
     mTimeStats.setDesiredTime(layerName, mCurrentFrameNumber, desiredPresentTime);
 
-    std::shared_ptr<FenceTime> frameReadyFence = mConsumer->getCurrentFenceTime();
+    std::shared_ptr<FenceTime> frameReadyFence = getCurrentFenceTime();
     if (frameReadyFence->isValid()) {
         mFrameTracker.setFrameReadyFence(std::move(frameReadyFence));
     } else {
@@ -331,7 +306,7 @@
     if (presentFence->isValid()) {
         mTimeStats.setPresentFence(layerName, mCurrentFrameNumber, presentFence);
         mFrameTracker.setActualPresentFence(std::shared_ptr<FenceTime>(presentFence));
-    } else {
+    } else if (mFlinger->getHwComposer().isConnected(HWC_DISPLAY_PRIMARY)) {
         // The HWC doesn't support present fences, so use the refresh
         // timestamp instead.
         const nsecs_t actualPresentTime =
@@ -345,58 +320,20 @@
     return true;
 }
 
-std::vector<OccupancyTracker::Segment> BufferLayer::getOccupancyHistory(bool forceFlush) {
-    std::vector<OccupancyTracker::Segment> history;
-    status_t result = mConsumer->getOccupancyHistory(forceFlush, &history);
-    if (result != NO_ERROR) {
-        ALOGW("[%s] Failed to obtain occupancy history (%d)", mName.string(), result);
-        return {};
-    }
-    return history;
-}
-
-bool BufferLayer::getTransformToDisplayInverse() const {
-    return mConsumer->getTransformToDisplayInverse();
-}
-
-void BufferLayer::releasePendingBuffer(nsecs_t dequeueReadyTime) {
-    if (!mConsumer->releasePendingBuffer()) {
-        return;
-    }
-
-    auto releaseFenceTime =
-            std::make_shared<FenceTime>(mConsumer->getPrevFinalReleaseFence());
-    mReleaseTimeline.updateSignalTimes();
-    mReleaseTimeline.push(releaseFenceTime);
-
-    Mutex::Autolock lock(mFrameEventHistoryMutex);
-    if (mPreviousFrameNumber != 0) {
-        mFrameEventHistory.addRelease(mPreviousFrameNumber, dequeueReadyTime,
-                                      std::move(releaseFenceTime));
-    }
-}
-
-Region BufferLayer::latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime) {
+Region BufferLayer::latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime,
+                                const sp<Fence>& releaseFence) {
     ATRACE_CALL();
 
-    if (android_atomic_acquire_cas(true, false, &mSidebandStreamChanged) == 0) {
-        // mSidebandStreamChanged was true
-        mSidebandStream = mConsumer->getSidebandStream();
-        // replicated in LayerBE until FE/BE is ready to be synchronized
-        getBE().compositionInfo.hwc.sidebandStream = mSidebandStream;
-        if (getBE().compositionInfo.hwc.sidebandStream != nullptr) {
-            setTransactionFlags(eTransactionNeeded);
-            mFlinger->setTransactionFlags(eTraversalNeeded);
-        }
-        recomputeVisibleRegions = true;
+    std::optional<Region> sidebandStreamDirtyRegion = latchSidebandStream(recomputeVisibleRegions);
 
-        const State& s(getDrawingState());
-        return getTransform().transform(Region(Rect(s.active.w, s.active.h)));
+    if (sidebandStreamDirtyRegion) {
+        return *sidebandStreamDirtyRegion;
     }
 
-    Region outDirtyRegion;
-    if (mQueuedFrames <= 0 && !mAutoRefresh) {
-        return outDirtyRegion;
+    Region dirtyRegion;
+
+    if (!hasReadyFrame()) {
+        return dirtyRegion;
     }
 
     // if we've already called updateTexImage() without going through
@@ -405,119 +342,41 @@
     // compositionComplete() call.
     // we'll trigger an update in onPreComposition().
     if (mRefreshPending) {
-        return outDirtyRegion;
+        return dirtyRegion;
     }
 
     // If the head buffer's acquire fence hasn't signaled yet, return and
     // try again later
-    if (!headFenceHasSignaled()) {
+    if (!fenceHasSignaled()) {
         mFlinger->signalLayerUpdate();
-        return outDirtyRegion;
+        return dirtyRegion;
     }
 
     // Capture the old state of the layer for comparisons later
     const State& s(getDrawingState());
     const bool oldOpacity = isOpaque(s);
-    sp<GraphicBuffer> oldBuffer = getBE().compositionInfo.mBuffer;
+    sp<GraphicBuffer> oldBuffer = mActiveBuffer;
 
     if (!allTransactionsSignaled()) {
         mFlinger->signalLayerUpdate();
-        return outDirtyRegion;
+        return dirtyRegion;
     }
 
-    // This boolean is used to make sure that SurfaceFlinger's shadow copy
-    // of the buffer queue isn't modified when the buffer queue is returning
-    // BufferItem's that weren't actually queued. This can happen in shared
-    // buffer mode.
-    bool queuedBuffer = false;
-    LayerRejecter r(mDrawingState, getCurrentState(), recomputeVisibleRegions,
-                    getProducerStickyTransform() != 0, mName.string(),
-                    mOverrideScalingMode, mFreezeGeometryUpdates);
-    status_t updateResult =
-            mConsumer->updateTexImage(&r, mFlinger->mPrimaryDispSync,
-                                                    &mAutoRefresh, &queuedBuffer,
-                                                    mLastFrameNumberReceived);
-    if (updateResult == BufferQueue::PRESENT_LATER) {
-        // Producer doesn't want buffer to be displayed yet.  Signal a
-        // layer update so we check again at the next opportunity.
-        mFlinger->signalLayerUpdate();
-        return outDirtyRegion;
-    } else if (updateResult == BufferLayerConsumer::BUFFER_REJECTED) {
-        // If the buffer has been rejected, remove it from the shadow queue
-        // and return early
-        if (queuedBuffer) {
-            Mutex::Autolock lock(mQueueItemLock);
-            mTimeStats.removeTimeRecord(getName().c_str(), mQueueItems[0].mFrameNumber);
-            mQueueItems.removeAt(0);
-            android_atomic_dec(&mQueuedFrames);
-        }
-        return outDirtyRegion;
-    } else if (updateResult != NO_ERROR || mUpdateTexImageFailed) {
-        // This can occur if something goes wrong when trying to create the
-        // EGLImage for this buffer. If this happens, the buffer has already
-        // been released, so we need to clean up the queue and bug out
-        // early.
-        if (queuedBuffer) {
-            Mutex::Autolock lock(mQueueItemLock);
-            mQueueItems.clear();
-            android_atomic_and(0, &mQueuedFrames);
-            mTimeStats.clearLayerRecord(getName().c_str());
-        }
-
-        // Once we have hit this state, the shadow queue may no longer
-        // correctly reflect the incoming BufferQueue's contents, so even if
-        // updateTexImage starts working, the only safe course of action is
-        // to continue to ignore updates.
-        mUpdateTexImageFailed = true;
-
-        return outDirtyRegion;
+    status_t err = updateTexImage(recomputeVisibleRegions, latchTime, releaseFence);
+    if (err != NO_ERROR) {
+        return dirtyRegion;
     }
 
-    if (queuedBuffer) {
-        // Autolock scope
-        auto currentFrameNumber = mConsumer->getFrameNumber();
-
-        Mutex::Autolock lock(mQueueItemLock);
-
-        // Remove any stale buffers that have been dropped during
-        // updateTexImage
-        while (mQueueItems[0].mFrameNumber != currentFrameNumber) {
-            mTimeStats.removeTimeRecord(getName().c_str(), mQueueItems[0].mFrameNumber);
-            mQueueItems.removeAt(0);
-            android_atomic_dec(&mQueuedFrames);
-        }
-
-        const std::string layerName(getName().c_str());
-        mTimeStats.setAcquireFence(layerName, currentFrameNumber, mQueueItems[0].mFenceTime);
-        mTimeStats.setLatchTime(layerName, currentFrameNumber, latchTime);
-
-        mQueueItems.removeAt(0);
-    }
-
-    // Decrement the queued-frames count.  Signal another event if we
-    // have more frames pending.
-    if ((queuedBuffer && android_atomic_dec(&mQueuedFrames) > 1) ||
-        mAutoRefresh) {
-        mFlinger->signalLayerUpdate();
-    }
-
-    // update the active buffer
-    getBE().compositionInfo.mBuffer =
-            mConsumer->getCurrentBuffer(&getBE().compositionInfo.mBufferSlot);
-    // replicated in LayerBE until FE/BE is ready to be synchronized
-    mActiveBuffer = getBE().compositionInfo.mBuffer;
-    if (getBE().compositionInfo.mBuffer == nullptr) {
-        // this can only happen if the very first buffer was rejected.
-        return outDirtyRegion;
+    err = updateActiveBuffer();
+    if (err != NO_ERROR) {
+        return dirtyRegion;
     }
 
     mBufferLatched = true;
-    mPreviousFrameNumber = mCurrentFrameNumber;
-    mCurrentFrameNumber = mConsumer->getFrameNumber();
 
-    {
-        Mutex::Autolock lock(mFrameEventHistoryMutex);
-        mFrameEventHistory.addLatch(mCurrentFrameNumber, latchTime);
+    err = updateFrameNumber(latchTime);
+    if (err != NO_ERROR) {
+        return dirtyRegion;
     }
 
     mRefreshPending = true;
@@ -528,7 +387,7 @@
         recomputeVisibleRegions = true;
     }
 
-    ui::Dataspace dataSpace = mConsumer->getCurrentDataSpace();
+    ui::Dataspace dataSpace = getDrawingDataSpace();
     // treat modern dataspaces as legacy dataspaces whenever possible, until
     // we can trust the buffer producers
     switch (dataSpace) {
@@ -555,11 +414,10 @@
     }
     mCurrentDataSpace = dataSpace;
 
-    Rect crop(mConsumer->getCurrentCrop());
-    const uint32_t transform(mConsumer->getCurrentTransform());
-    const uint32_t scalingMode(mConsumer->getCurrentScalingMode());
-    if ((crop != mCurrentCrop) ||
-        (transform != mCurrentTransform) ||
+    Rect crop(getDrawingCrop());
+    const uint32_t transform(getDrawingTransform());
+    const uint32_t scalingMode(getDrawingScalingMode());
+    if ((crop != mCurrentCrop) || (transform != mCurrentTransform) ||
         (scalingMode != mCurrentScalingMode)) {
         mCurrentCrop = crop;
         mCurrentTransform = transform;
@@ -568,15 +426,13 @@
     }
 
     if (oldBuffer != nullptr) {
-        uint32_t bufWidth = getBE().compositionInfo.mBuffer->getWidth();
-        uint32_t bufHeight = getBE().compositionInfo.mBuffer->getHeight();
-        if (bufWidth != uint32_t(oldBuffer->width) ||
-            bufHeight != uint32_t(oldBuffer->height)) {
+        uint32_t bufWidth = mActiveBuffer->getWidth();
+        uint32_t bufHeight = mActiveBuffer->getHeight();
+        if (bufWidth != uint32_t(oldBuffer->width) || bufHeight != uint32_t(oldBuffer->height)) {
             recomputeVisibleRegions = true;
         }
     }
 
-    mCurrentOpacity = getOpacityForFormat(getBE().compositionInfo.mBuffer->format);
     if (oldOpacity != isOpaque(s)) {
         recomputeVisibleRegions = true;
     }
@@ -603,306 +459,37 @@
     }
 
     // FIXME: postedRegion should be dirty & bounds
-    Region dirtyRegion(Rect(s.active.w, s.active.h));
-
     // transform the dirty region to window-manager space
-    outDirtyRegion = (getTransform().transform(dirtyRegion));
-
-    return outDirtyRegion;
+    return getTransform().transform(Region(Rect(getActiveWidth(s), getActiveHeight(s))));
 }
 
-void BufferLayer::setDefaultBufferSize(uint32_t w, uint32_t h) {
-    mConsumer->setDefaultBufferSize(w, h);
-}
-
-void BufferLayer::setPerFrameData(const sp<const DisplayDevice>& displayDevice) {
-    // Apply this display's projection's viewport to the visible region
-    // before giving it to the HWC HAL.
-    const Transform& tr = displayDevice->getTransform();
-    const auto& viewport = displayDevice->getViewport();
-    Region visible = tr.transform(visibleRegion.intersect(viewport));
-    auto hwcId = displayDevice->getHwcDisplayId();
-    if (!hasHwcLayer(hwcId)) {
-        return;
-    }
-    auto& hwcInfo = getBE().mHwcLayers[hwcId];
-    auto& hwcLayer = hwcInfo.layer;
-    auto error = hwcLayer->setVisibleRegion(visible);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set visible region: %s (%d)", mName.string(),
-              to_string(error).c_str(), static_cast<int32_t>(error));
-        visible.dump(LOG_TAG);
-    }
-
-    error = hwcLayer->setSurfaceDamage(surfaceDamageRegion);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set surface damage: %s (%d)", mName.string(),
-              to_string(error).c_str(), static_cast<int32_t>(error));
-        surfaceDamageRegion.dump(LOG_TAG);
-    }
-
-    // Sideband layers
-    if (getBE().compositionInfo.hwc.sidebandStream.get()) {
-        setCompositionType(hwcId, HWC2::Composition::Sideband);
-        ALOGV("[%s] Requesting Sideband composition", mName.string());
-        error = hwcLayer->setSidebandStream(getBE().compositionInfo.hwc.sidebandStream->handle());
-        if (error != HWC2::Error::None) {
-            ALOGE("[%s] Failed to set sideband stream %p: %s (%d)", mName.string(),
-                  getBE().compositionInfo.hwc.sidebandStream->handle(), to_string(error).c_str(),
-                  static_cast<int32_t>(error));
-        }
-        return;
-    }
-
-    // Device or Cursor layers
-    if (mPotentialCursor) {
-        ALOGV("[%s] Requesting Cursor composition", mName.string());
-        setCompositionType(hwcId, HWC2::Composition::Cursor);
-    } else {
-        ALOGV("[%s] Requesting Device composition", mName.string());
-        setCompositionType(hwcId, HWC2::Composition::Device);
-    }
-
-    ALOGV("setPerFrameData: dataspace = %d", mCurrentDataSpace);
-    error = hwcLayer->setDataspace(mCurrentDataSpace);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set dataspace %d: %s (%d)", mName.string(), mCurrentDataSpace,
-              to_string(error).c_str(), static_cast<int32_t>(error));
-    }
-
-    const HdrMetadata& metadata = mConsumer->getCurrentHdrMetadata();
-    error = hwcLayer->setPerFrameMetadata(displayDevice->getSupportedPerFrameMetadata(), metadata);
-    if (error != HWC2::Error::None && error != HWC2::Error::Unsupported) {
-        ALOGE("[%s] Failed to set hdrMetadata: %s (%d)", mName.string(),
-              to_string(error).c_str(), static_cast<int32_t>(error));
-    }
-
-    uint32_t hwcSlot = 0;
-    sp<GraphicBuffer> hwcBuffer;
-    hwcInfo.bufferCache.getHwcBuffer(getBE().compositionInfo.mBufferSlot,
-                                     getBE().compositionInfo.mBuffer, &hwcSlot, &hwcBuffer);
-
-    auto acquireFence = mConsumer->getCurrentFence();
-    error = hwcLayer->setBuffer(hwcSlot, hwcBuffer, acquireFence);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set buffer %p: %s (%d)", mName.string(),
-              getBE().compositionInfo.mBuffer->handle, to_string(error).c_str(),
-              static_cast<int32_t>(error));
-    }
-}
-
-bool BufferLayer::isOpaque(const Layer::State& s) const {
-    // if we don't have a buffer or sidebandStream yet, we're translucent regardless of the
-    // layer's opaque flag.
-    if ((getBE().compositionInfo.hwc.sidebandStream == nullptr) && (getBE().compositionInfo.mBuffer == nullptr)) {
-        return false;
-    }
-
-    // if the layer has the opaque flag, then we're always opaque,
-    // otherwise we use the current buffer's format.
-    return ((s.flags & layer_state_t::eLayerOpaque) != 0) || mCurrentOpacity;
-}
-
-void BufferLayer::onFirstRef() {
-    Layer::onFirstRef();
-
-    // Creates a custom BufferQueue for SurfaceFlingerConsumer to use
-    sp<IGraphicBufferProducer> producer;
-    sp<IGraphicBufferConsumer> consumer;
-    BufferQueue::createBufferQueue(&producer, &consumer, true);
-    mProducer = new MonitoredProducer(producer, mFlinger, this);
-    {
-        // Grab the SF state lock during this since it's the only safe way to access RenderEngine
-        Mutex::Autolock lock(mFlinger->mStateLock);
-        mConsumer = new BufferLayerConsumer(consumer, mFlinger->getRenderEngine(), mTextureName,
-                                            this);
-    }
-    mConsumer->setConsumerUsageBits(getEffectiveUsage(0));
-    mConsumer->setContentsChangedListener(this);
-    mConsumer->setName(mName);
-
-    if (mFlinger->isLayerTripleBufferingDisabled()) {
-        mProducer->setMaxDequeuedBufferCount(2);
-    }
-
-    const sp<const DisplayDevice> hw(mFlinger->getDefaultDisplayDevice());
-    updateTransformHint(hw);
-}
-
-// ---------------------------------------------------------------------------
-// Interface implementation for SurfaceFlingerConsumer::ContentsChangedListener
-// ---------------------------------------------------------------------------
-
-void BufferLayer::onFrameAvailable(const BufferItem& item) {
-    // Add this buffer from our internal queue tracker
-    { // Autolock scope
-        Mutex::Autolock lock(mQueueItemLock);
-        mFlinger->mInterceptor->saveBufferUpdate(this, item.mGraphicBuffer->getWidth(),
-                                                 item.mGraphicBuffer->getHeight(),
-                                                 item.mFrameNumber);
-        // Reset the frame number tracker when we receive the first buffer after
-        // a frame number reset
-        if (item.mFrameNumber == 1) {
-            mLastFrameNumberReceived = 0;
-        }
-
-        // Ensure that callbacks are handled in order
-        while (item.mFrameNumber != mLastFrameNumberReceived + 1) {
-            status_t result = mQueueItemCondition.waitRelative(mQueueItemLock,
-                                                               ms2ns(500));
-            if (result != NO_ERROR) {
-                ALOGE("[%s] Timed out waiting on callback", mName.string());
-            }
-        }
-
-        mQueueItems.push_back(item);
-        android_atomic_inc(&mQueuedFrames);
-
-        // Wake up any pending callbacks
-        mLastFrameNumberReceived = item.mFrameNumber;
-        mQueueItemCondition.broadcast();
-    }
-
-    mFlinger->signalLayerUpdate();
-}
-
-void BufferLayer::onFrameReplaced(const BufferItem& item) {
-    { // Autolock scope
-        Mutex::Autolock lock(mQueueItemLock);
-
-        // Ensure that callbacks are handled in order
-        while (item.mFrameNumber != mLastFrameNumberReceived + 1) {
-            status_t result = mQueueItemCondition.waitRelative(mQueueItemLock,
-                                                               ms2ns(500));
-            if (result != NO_ERROR) {
-                ALOGE("[%s] Timed out waiting on callback", mName.string());
-            }
-        }
-
-        if (mQueueItems.empty()) {
-            ALOGE("Can't replace a frame on an empty queue");
-            return;
-        }
-        mQueueItems.editItemAt(mQueueItems.size() - 1) = item;
-
-        // Wake up any pending callbacks
-        mLastFrameNumberReceived = item.mFrameNumber;
-        mQueueItemCondition.broadcast();
-    }
-}
-
-void BufferLayer::onSidebandStreamChanged() {
-    if (android_atomic_release_cas(false, true, &mSidebandStreamChanged) == 0) {
-        // mSidebandStreamChanged was false
-        mFlinger->signalLayerUpdate();
-    }
-}
-
-bool BufferLayer::needsFiltering(const RenderArea& renderArea) const {
-    return mNeedsFiltering || renderArea.needsFiltering();
-}
-
-// As documented in libhardware header, formats in the range
-// 0x100 - 0x1FF are specific to the HAL implementation, and
-// are known to have no alpha channel
-// TODO: move definition for device-specific range into
-// hardware.h, instead of using hard-coded values here.
-#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF)
-
-bool BufferLayer::getOpacityForFormat(uint32_t format) {
-    if (HARDWARE_IS_DEVICE_FORMAT(format)) {
-        return true;
-    }
-    switch (format) {
-        case HAL_PIXEL_FORMAT_RGBA_8888:
-        case HAL_PIXEL_FORMAT_BGRA_8888:
-        case HAL_PIXEL_FORMAT_RGBA_FP16:
-        case HAL_PIXEL_FORMAT_RGBA_1010102:
-            return false;
-    }
-    // in all other case, we have no blending (also for unknown formats)
-    return true;
-}
-
-bool BufferLayer::isHdrY410() const {
-    // pixel format is HDR Y410 masquerading as RGBA_1010102
-    return (mCurrentDataSpace == ui::Dataspace::BT2020_ITU_PQ &&
-            mConsumer->getCurrentApi() == NATIVE_WINDOW_API_MEDIA &&
-            getBE().compositionInfo.mBuffer->getPixelFormat() == HAL_PIXEL_FORMAT_RGBA_1010102);
-}
-
-void BufferLayer::drawWithOpenGL(const RenderArea& renderArea, bool useIdentityTransform) const {
-    ATRACE_CALL();
-    const State& s(getDrawingState());
-
-    computeGeometry(renderArea, getBE().mMesh, useIdentityTransform);
-
-    /*
-     * NOTE: the way we compute the texture coordinates here produces
-     * different results than when we take the HWC path -- in the later case
-     * the "source crop" is rounded to texel boundaries.
-     * This can produce significantly different results when the texture
-     * is scaled by a large amount.
-     *
-     * The GL code below is more logical (imho), and the difference with
-     * HWC is due to a limitation of the HWC API to integers -- a question
-     * is suspend is whether we should ignore this problem or revert to
-     * GL composition when a buffer scaling is applied (maybe with some
-     * minimal value)? Or, we could make GL behave like HWC -- but this feel
-     * like more of a hack.
-     */
-    const Rect bounds{computeBounds()}; // Rounds from FloatRect
-
-    Transform t = getTransform();
-    Rect win = bounds;
-    if (!s.finalCrop.isEmpty()) {
-        win = t.transform(win);
-        if (!win.intersect(s.finalCrop, &win)) {
-            win.clear();
-        }
-        win = t.inverse().transform(win);
-        if (!win.intersect(bounds, &win)) {
-            win.clear();
+// transaction
+void BufferLayer::notifyAvailableFrames() {
+    auto headFrameNumber = getHeadFrameNumber();
+    bool headFenceSignaled = fenceHasSignaled();
+    Mutex::Autolock lock(mLocalSyncPointMutex);
+    for (auto& point : mLocalSyncPoints) {
+        if (headFrameNumber >= point->getFrameNumber() && headFenceSignaled) {
+            point->setFrameAvailable();
         }
     }
-
-    float left = float(win.left) / float(s.active.w);
-    float top = float(win.top) / float(s.active.h);
-    float right = float(win.right) / float(s.active.w);
-    float bottom = float(win.bottom) / float(s.active.h);
-
-    // TODO: we probably want to generate the texture coords with the mesh
-    // here we assume that we only have 4 vertices
-    Mesh::VertexArray<vec2> texCoords(getBE().mMesh.getTexCoordArray<vec2>());
-    texCoords[0] = vec2(left, 1.0f - top);
-    texCoords[1] = vec2(left, 1.0f - bottom);
-    texCoords[2] = vec2(right, 1.0f - bottom);
-    texCoords[3] = vec2(right, 1.0f - top);
-
-    auto& engine(mFlinger->getRenderEngine());
-    engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(s), false /* disableTexture */,
-                              getColor());
-    engine.setSourceDataSpace(mCurrentDataSpace);
-
-    if (isHdrY410()) {
-        engine.setSourceY410BT2020(true);
-    }
-
-    engine.drawMesh(getBE().mMesh);
-    engine.disableBlending();
-
-    engine.setSourceY410BT2020(false);
 }
 
-uint32_t BufferLayer::getProducerStickyTransform() const {
-    int producerStickyTransform = 0;
-    int ret = mProducer->query(NATIVE_WINDOW_STICKY_TRANSFORM, &producerStickyTransform);
-    if (ret != OK) {
-        ALOGW("%s: Error %s (%d) while querying window sticky transform.", __FUNCTION__,
-              strerror(-ret), ret);
-        return 0;
+bool BufferLayer::hasReadyFrame() const {
+    return hasDrawingBuffer() || getSidebandStreamChanged() || getAutoRefresh();
+}
+
+uint32_t BufferLayer::getEffectiveScalingMode() const {
+    if (mOverrideScalingMode >= 0) {
+        return mOverrideScalingMode;
     }
-    return static_cast<uint32_t>(producerStickyTransform);
+
+    return mCurrentScalingMode;
+}
+
+bool BufferLayer::isProtected() const {
+    const sp<GraphicBuffer>& buffer(mActiveBuffer);
+    return (buffer != 0) && (buffer->getUsage() & GRALLOC_USAGE_PROTECTED);
 }
 
 bool BufferLayer::latchUnsignaledBuffers() {
@@ -919,65 +506,7 @@
     return latch;
 }
 
-uint64_t BufferLayer::getHeadFrameNumber() const {
-    Mutex::Autolock lock(mQueueItemLock);
-    if (!mQueueItems.empty()) {
-        return mQueueItems[0].mFrameNumber;
-    } else {
-        return mCurrentFrameNumber;
-    }
-}
-
-bool BufferLayer::headFenceHasSignaled() const {
-    if (latchUnsignaledBuffers()) {
-        return true;
-    }
-
-    Mutex::Autolock lock(mQueueItemLock);
-    if (mQueueItems.empty()) {
-        return true;
-    }
-    if (mQueueItems[0].mIsDroppable) {
-        // Even though this buffer's fence may not have signaled yet, it could
-        // be replaced by another buffer before it has a chance to, which means
-        // that it's possible to get into a situation where a buffer is never
-        // able to be latched. To avoid this, grab this buffer anyway.
-        return true;
-    }
-    return mQueueItems[0].mFenceTime->getSignalTime() !=
-            Fence::SIGNAL_TIME_PENDING;
-}
-
-uint32_t BufferLayer::getEffectiveScalingMode() const {
-    if (mOverrideScalingMode >= 0) {
-        return mOverrideScalingMode;
-    }
-    return mCurrentScalingMode;
-}
-
-// ----------------------------------------------------------------------------
-// transaction
-// ----------------------------------------------------------------------------
-
-void BufferLayer::notifyAvailableFrames() {
-    auto headFrameNumber = getHeadFrameNumber();
-    bool headFenceSignaled = headFenceHasSignaled();
-    Mutex::Autolock lock(mLocalSyncPointMutex);
-    for (auto& point : mLocalSyncPoints) {
-        if (headFrameNumber >= point->getFrameNumber() && headFenceSignaled) {
-            point->setFrameAvailable();
-        }
-    }
-}
-
-sp<IGraphicBufferProducer> BufferLayer::getProducer() const {
-    return mProducer;
-}
-
-// ---------------------------------------------------------------------------
 // h/w composer set-up
-// ---------------------------------------------------------------------------
-
 bool BufferLayer::allTransactionsSignaled() {
     auto headFrameNumber = getHeadFrameNumber();
     bool matchingFramesFound = false;
@@ -1004,6 +533,94 @@
     return !matchingFramesFound || allTransactionsApplied;
 }
 
+// As documented in libhardware header, formats in the range
+// 0x100 - 0x1FF are specific to the HAL implementation, and
+// are known to have no alpha channel
+// TODO: move definition for device-specific range into
+// hardware.h, instead of using hard-coded values here.
+#define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF)
+
+bool BufferLayer::getOpacityForFormat(uint32_t format) {
+    if (HARDWARE_IS_DEVICE_FORMAT(format)) {
+        return true;
+    }
+    switch (format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+        case HAL_PIXEL_FORMAT_RGBA_FP16:
+        case HAL_PIXEL_FORMAT_RGBA_1010102:
+            return false;
+    }
+    // in all other case, we have no blending (also for unknown formats)
+    return true;
+}
+
+bool BufferLayer::needsFiltering(const RenderArea& renderArea) const {
+    return mNeedsFiltering || renderArea.needsFiltering();
+}
+
+void BufferLayer::drawWithOpenGL(const RenderArea& renderArea, bool useIdentityTransform) const {
+    ATRACE_CALL();
+    const State& s(getDrawingState());
+
+    computeGeometry(renderArea, getBE().mMesh, useIdentityTransform);
+
+    /*
+     * NOTE: the way we compute the texture coordinates here produces
+     * different results than when we take the HWC path -- in the later case
+     * the "source crop" is rounded to texel boundaries.
+     * This can produce significantly different results when the texture
+     * is scaled by a large amount.
+     *
+     * The GL code below is more logical (imho), and the difference with
+     * HWC is due to a limitation of the HWC API to integers -- a question
+     * is suspend is whether we should ignore this problem or revert to
+     * GL composition when a buffer scaling is applied (maybe with some
+     * minimal value)? Or, we could make GL behave like HWC -- but this feel
+     * like more of a hack.
+     */
+    const Rect bounds{computeBounds()}; // Rounds from FloatRect
+
+    ui::Transform t = getTransform();
+    Rect win = bounds;
+
+    float left = float(win.left) / float(getActiveWidth(s));
+    float top = float(win.top) / float(getActiveHeight(s));
+    float right = float(win.right) / float(getActiveWidth(s));
+    float bottom = float(win.bottom) / float(getActiveHeight(s));
+
+    // TODO: we probably want to generate the texture coords with the mesh
+    // here we assume that we only have 4 vertices
+    renderengine::Mesh::VertexArray<vec2> texCoords(getBE().mMesh.getTexCoordArray<vec2>());
+    // flip texcoords vertically because BufferLayerConsumer expects them to be in GL convention
+    texCoords[0] = vec2(left, 1.0f - top);
+    texCoords[1] = vec2(left, 1.0f - bottom);
+    texCoords[2] = vec2(right, 1.0f - bottom);
+    texCoords[3] = vec2(right, 1.0f - top);
+
+    auto& engine(mFlinger->getRenderEngine());
+    engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(s), false /* disableTexture */,
+                              getColor());
+    engine.setSourceDataSpace(mCurrentDataSpace);
+
+    if (isHdrY410()) {
+        engine.setSourceY410BT2020(true);
+    }
+
+    engine.drawMesh(getBE().mMesh);
+    engine.disableBlending();
+
+    engine.setSourceY410BT2020(false);
+}
+
+uint64_t BufferLayer::getHeadFrameNumber() const {
+    if (hasDrawingBuffer()) {
+        return getFrameNumber();
+    } else {
+        return mCurrentFrameNumber;
+    }
+}
+
 } // namespace android
 
 #if defined(__gl_h_)
diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index bf0ca69..a294793 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -24,14 +24,12 @@
 #include "FrameTracker.h"
 #include "LayerVector.h"
 #include "MonitoredProducer.h"
-#include "RenderEngine/Mesh.h"
-#include "RenderEngine/Texture.h"
 #include "SurfaceFlinger.h"
-#include "Transform.h"
 
 #include <gui/ISurfaceComposerClient.h>
 #include <gui/LayerState.h>
-
+#include <renderengine/Mesh.h>
+#include <renderengine/Texture.h>
 #include <ui/FrameStats.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/PixelFormat.h>
@@ -41,158 +39,153 @@
 #include <utils/String8.h>
 #include <utils/Timers.h>
 
+#include <system/window.h> // For NATIVE_WINDOW_SCALING_MODE_FREEZE
+
 #include <stdint.h>
 #include <sys/types.h>
 #include <list>
 
 namespace android {
 
-/*
- * A new BufferQueue and a new BufferLayerConsumer are created when the
- * BufferLayer is first referenced.
- *
- * This also implements onFrameAvailable(), which notifies SurfaceFlinger
- * that new data has arrived.
- */
-class BufferLayer : public Layer, public BufferLayerConsumer::ContentsChangedListener {
+class BufferLayer : public Layer {
 public:
-    BufferLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name, uint32_t w,
-                uint32_t h, uint32_t flags);
-
+    explicit BufferLayer(const LayerCreationArgs& args);
     ~BufferLayer() override;
 
-    // If we have received a new buffer this frame, we will pass its surface
-    // damage down to hardware composer. Otherwise, we must send a region with
-    // one empty rect.
-    void useSurfaceDamage();
-    void useEmptyDamage();
-
     // -----------------------------------------------------------------------
     // Overriden from Layer
     // -----------------------------------------------------------------------
+public:
+    // If we have received a new buffer this frame, we will pass its surface
+    // damage down to hardware composer. Otherwise, we must send a region with
+    // one empty rect.
+    void useSurfaceDamage() override;
+    void useEmptyDamage() override;
 
-    /*
-     * getTypeId - Provide unique string for each class type in the Layer
-     * hierarchy
-     */
+    // getTypeId - Provide unique string for each class type in the Layer
+    // hierarchy
     const char* getTypeId() const override { return "BufferLayer"; }
 
-    /*
-     * isProtected - true if the layer may contain protected content in the
-     * GRALLOC_USAGE_PROTECTED sense.
-     */
-    bool isProtected() const;
+    bool isOpaque(const Layer::State& s) const override;
 
-    /*
-     * isVisible - true if this layer is visible, false otherwise
-     */
+    // isVisible - true if this layer is visible, false otherwise
     bool isVisible() const override;
 
-    /*
-     * isFixedSize - true if content has a fixed size
-     */
+    // isFixedSize - true if content has a fixed size
     bool isFixedSize() const override;
 
-    // the this layer's size and format
-    status_t setBuffers(uint32_t w, uint32_t h, PixelFormat format, uint32_t flags);
-
-    /*
-     * onDraw - draws the surface.
-     */
+    // onDraw - draws the surface.
     void onDraw(const RenderArea& renderArea, const Region& clip,
-                bool useIdentityTransform) const override;
-
-    void onLayerDisplayed(const sp<Fence>& releaseFence) override;
-
-    void abandon() override;
-    bool shouldPresentNow(const DispSync& dispSync) const override;
-    void setTransformHint(uint32_t orientation) const override;
-    bool onPostComposition(const std::shared_ptr<FenceTime>& glDoneFence,
-                           const std::shared_ptr<FenceTime>& presentFence,
-                           const CompositorTiming& compositorTiming) override;
-    std::vector<OccupancyTracker::Segment> getOccupancyHistory(bool forceFlush) override;
-    bool getTransformToDisplayInverse() const override;
-
-public:
-    bool onPreComposition(nsecs_t refreshStartTime) override;
-
-    // If a buffer was replaced this frame, release the former buffer
-    void releasePendingBuffer(nsecs_t dequeueReadyTime);
-
-    /*
-     * latchBuffer - called each time the screen is redrawn and returns whether
-     * the visible regions need to be recomputed (this is a fairly heavy
-     * operation, so this should be set only if needed). Typically this is used
-     * to figure out if the content or size of a surface has changed.
-     */
-    Region latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime) override;
-    bool isBufferLatched() const override { return mRefreshPending; }
-    void setDefaultBufferSize(uint32_t w, uint32_t h) override;
+                bool useIdentityTransform) override;
 
     bool isHdrY410() const override;
 
     void setPerFrameData(const sp<const DisplayDevice>& displayDevice) override;
 
-    bool isOpaque(const Layer::State& s) const override;
+    bool onPreComposition(nsecs_t refreshStartTime) override;
+    bool onPostComposition(const std::shared_ptr<FenceTime>& glDoneFence,
+                           const std::shared_ptr<FenceTime>& presentFence,
+                           const CompositorTiming& compositorTiming) override;
 
-private:
-    void onFirstRef() override;
+    // latchBuffer - called each time the screen is redrawn and returns whether
+    // the visible regions need to be recomputed (this is a fairly heavy
+    // operation, so this should be set only if needed). Typically this is used
+    // to figure out if the content or size of a surface has changed.
+    // If there was a GL composition step rendering the previous frame, then
+    // releaseFence will be populated with a native fence that fires when
+    // composition has completed.
+    Region latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime,
+                       const sp<Fence>& releaseFence) override;
 
-    // Interface implementation for
-    // BufferLayerConsumer::ContentsChangedListener
-    void onFrameAvailable(const BufferItem& item) override;
-    void onFrameReplaced(const BufferItem& item) override;
-    void onSidebandStreamChanged() override;
+    bool isBufferLatched() const override { return mRefreshPending; }
 
-    // needsLinearFiltering - true if this surface's state requires filtering
-    bool needsFiltering(const RenderArea& renderArea) const;
+    void notifyAvailableFrames() override;
 
-    static bool getOpacityForFormat(uint32_t format);
-
-    // drawing
-    void drawWithOpenGL(const RenderArea& renderArea, bool useIdentityTransform) const;
-
-    // Temporary - Used only for LEGACY camera mode.
-    uint32_t getProducerStickyTransform() const;
-
-    // Loads the corresponding system property once per process
-    static bool latchUnsignaledBuffers();
-
-    uint64_t getHeadFrameNumber() const;
-    bool headFenceHasSignaled() const;
+    bool hasReadyFrame() const override;
 
     // Returns the current scaling mode, unless mOverrideScalingMode
     // is set, in which case, it returns mOverrideScalingMode
     uint32_t getEffectiveScalingMode() const override;
+    // -----------------------------------------------------------------------
+
+    // -----------------------------------------------------------------------
+    // Functions that must be implemented by derived classes
+    // -----------------------------------------------------------------------
+private:
+    virtual bool fenceHasSignaled() const = 0;
+
+    virtual nsecs_t getDesiredPresentTime() = 0;
+    virtual std::shared_ptr<FenceTime> getCurrentFenceTime() const = 0;
+
+    virtual void getDrawingTransformMatrix(float *matrix) = 0;
+    virtual uint32_t getDrawingTransform() const = 0;
+    virtual ui::Dataspace getDrawingDataSpace() const = 0;
+    virtual Rect getDrawingCrop() const = 0;
+    virtual uint32_t getDrawingScalingMode() const = 0;
+    virtual Region getDrawingSurfaceDamage() const = 0;
+    virtual const HdrMetadata& getDrawingHdrMetadata() const = 0;
+    virtual int getDrawingApi() const = 0;
+    virtual PixelFormat getPixelFormat() const = 0;
+
+    virtual uint64_t getFrameNumber() const = 0;
+
+    virtual bool getAutoRefresh() const = 0;
+    virtual bool getSidebandStreamChanged() const = 0;
+
+    virtual std::optional<Region> latchSidebandStream(bool& recomputeVisibleRegions) = 0;
+
+    virtual bool hasDrawingBuffer() const = 0;
+
+    virtual void setFilteringEnabled(bool enabled) = 0;
+
+    virtual status_t bindTextureImage() const = 0;
+    virtual status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
+                                    const sp<Fence>& flushFence) = 0;
+
+    virtual status_t updateActiveBuffer() = 0;
+    virtual status_t updateFrameNumber(nsecs_t latchTime) = 0;
+
+    virtual void setHwcLayerBuffer(const sp<const DisplayDevice>& display) = 0;
+
+    // -----------------------------------------------------------------------
 
 public:
-    void notifyAvailableFrames() override;
+    // isProtected - true if the layer may contain protected content in the
+    // GRALLOC_USAGE_PROTECTED sense.
+    bool isProtected() const;
 
-    PixelFormat getPixelFormat() const override { return mFormat; }
-    sp<IGraphicBufferProducer> getProducer() const;
-
-private:
-    sp<BufferLayerConsumer> mConsumer;
+protected:
+    // Loads the corresponding system property once per process
+    static bool latchUnsignaledBuffers();
 
     // Check all of the local sync points to ensure that all transactions
     // which need to have been applied prior to the frame which is about to
     // be latched have signaled
     bool allTransactionsSignaled();
-    sp<IGraphicBufferProducer> mProducer;
 
-    // constants
-    uint32_t mTextureName; // from GLES
-    PixelFormat mFormat;
+    static bool getOpacityForFormat(uint32_t format);
 
-    // main thread
-    uint32_t mCurrentScalingMode;
-    bool mBufferLatched = false;   // TODO: Use mActiveBuffer?
-    uint64_t mPreviousFrameNumber; // Only accessed on the main thread.
+    // from GLES
+    const uint32_t mTextureName;
+
+private:
+    // needsLinearFiltering - true if this surface's state requires filtering
+    bool needsFiltering(const RenderArea& renderArea) const;
+
+    // drawing
+    void drawWithOpenGL(const RenderArea& renderArea, bool useIdentityTransform) const;
+
+    uint64_t getHeadFrameNumber() const;
+
+    uint32_t mCurrentScalingMode{NATIVE_WINDOW_SCALING_MODE_FREEZE};
+
+    // main thread.
+    bool mBufferLatched{false}; // TODO: Use mActiveBuffer?
+
     // The texture used to draw the layer in GLES composition mode
-    mutable Texture mTexture;
+    mutable renderengine::Texture mTexture;
 
-    bool mUpdateTexImageFailed; // This is only accessed on the main thread.
-    bool mRefreshPending;
+    bool mRefreshPending{false};
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/BufferLayerConsumer.cpp b/services/surfaceflinger/BufferLayerConsumer.cpp
index 87333d0..f499f06 100644
--- a/services/surfaceflinger/BufferLayerConsumer.cpp
+++ b/services/surfaceflinger/BufferLayerConsumer.cpp
@@ -20,11 +20,8 @@
 //#define LOG_NDEBUG 0
 
 #include "BufferLayerConsumer.h"
-
-#include "DispSync.h"
 #include "Layer.h"
-#include "RenderEngine/Image.h"
-#include "RenderEngine/RenderEngine.h"
+#include "Scheduler/DispSync.h"
 
 #include <inttypes.h>
 
@@ -38,10 +35,9 @@
 #include <gui/GLConsumer.h>
 #include <gui/ISurfaceComposer.h>
 #include <gui/SurfaceComposerClient.h>
-
 #include <private/gui/ComposerService.h>
-#include <private/gui/SyncFeatures.h>
-
+#include <renderengine/Image.h>
+#include <renderengine/RenderEngine.h>
 #include <utils/Log.h>
 #include <utils/String8.h>
 #include <utils/Trace.h>
@@ -58,7 +54,8 @@
 static const mat4 mtxIdentity;
 
 BufferLayerConsumer::BufferLayerConsumer(const sp<IGraphicBufferConsumer>& bq,
-                                         RE::RenderEngine& engine, uint32_t tex, Layer* layer)
+                                         renderengine::RenderEngine& engine, uint32_t tex,
+                                         Layer* layer)
       : ConsumerBase(bq, false),
         mCurrentCrop(Rect::EMPTY_RECT),
         mCurrentTransform(0),
@@ -150,7 +147,8 @@
 
 status_t BufferLayerConsumer::updateTexImage(BufferRejecter* rejecter, const DispSync& dispSync,
                                              bool* autoRefresh, bool* queuedBuffer,
-                                             uint64_t maxFrameNumber) {
+                                             uint64_t maxFrameNumber,
+                                             const sp<Fence>& releaseFence) {
     ATRACE_CALL();
     BLC_LOGV("updateTexImage");
     Mutex::Autolock lock(mMutex);
@@ -201,12 +199,12 @@
     }
 
     // Release the previous buffer.
-    err = updateAndReleaseLocked(item, &mPendingRelease);
+    err = updateAndReleaseLocked(item, &mPendingRelease, releaseFence);
     if (err != NO_ERROR) {
         return err;
     }
 
-    if (!SyncFeatures::getInstance().useNativeFenceSync()) {
+    if (!mRE.useNativeFenceSync()) {
         // Bind the new buffer to the GL texture.
         //
         // Older devices require the "implicit" synchronization provided
@@ -280,23 +278,16 @@
     return NO_ERROR;
 }
 
-bool BufferLayerConsumer::canUseImageCrop(const Rect& crop) const {
-    // If the crop rect is not at the origin, we can't set the crop on the
-    // EGLImage because that's not allowed by the EGL_ANDROID_image_crop
-    // extension.  In the future we can add a layered extension that
-    // removes this restriction if there is hardware that can support it.
-    return mRE.supportsImageCrop() && crop.left == 0 && crop.top == 0;
-}
-
 status_t BufferLayerConsumer::updateAndReleaseLocked(const BufferItem& item,
-                                                     PendingRelease* pendingRelease) {
+                                                     PendingRelease* pendingRelease,
+                                                     const sp<Fence>& releaseFence) {
     status_t err = NO_ERROR;
 
     int slot = item.mSlot;
 
     // Do whatever sync ops we need to do before releasing the old slot.
     if (slot != mCurrentTexture) {
-        err = syncForReleaseLocked();
+        err = syncForReleaseLocked(releaseFence);
         if (err != NO_ERROR) {
             // Release the buffer we just acquired.  It's not safe to
             // release the old buffer, so instead we just drop the new frame.
@@ -365,8 +356,7 @@
         return NO_INIT;
     }
 
-    const Rect& imageCrop = canUseImageCrop(mCurrentCrop) ? mCurrentCrop : Rect::EMPTY_RECT;
-    status_t err = mCurrentTextureImage->createIfNeeded(imageCrop);
+    status_t err = mCurrentTextureImage->createIfNeeded();
     if (err != NO_ERROR) {
         BLC_LOGW("bindTextureImage: can't create image on slot=%d", mCurrentTexture);
         mRE.bindExternalTextureImage(mTexName, *mRE.createImage());
@@ -379,19 +369,19 @@
     return doFenceWaitLocked();
 }
 
-status_t BufferLayerConsumer::syncForReleaseLocked() {
+status_t BufferLayerConsumer::syncForReleaseLocked(const sp<Fence>& releaseFence) {
     BLC_LOGV("syncForReleaseLocked");
 
     if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
-        if (SyncFeatures::getInstance().useNativeFenceSync()) {
-            base::unique_fd fenceFd = mRE.flush();
-            if (fenceFd == -1) {
+        if (mRE.useNativeFenceSync() && releaseFence != Fence::NO_FENCE) {
+            // TODO(alecmouri): fail further upstream if the fence is invalid
+            if (!releaseFence->isValid()) {
                 BLC_LOGE("syncForReleaseLocked: failed to flush RenderEngine");
                 return UNKNOWN_ERROR;
             }
-            sp<Fence> fence(new Fence(std::move(fenceFd)));
-            status_t err = addReleaseFenceLocked(mCurrentTexture,
-                                                 mCurrentTextureImage->graphicBuffer(), fence);
+            status_t err =
+                    addReleaseFenceLocked(mCurrentTexture, mCurrentTextureImage->graphicBuffer(),
+                                          releaseFence);
             if (err != OK) {
                 BLC_LOGE("syncForReleaseLocked: error adding release fence: "
                          "%s (%d)",
@@ -435,9 +425,8 @@
         BLC_LOGD("computeCurrentTransformMatrixLocked: "
                  "mCurrentTextureImage is nullptr");
     }
-    const Rect& cropRect = canUseImageCrop(mCurrentCrop) ? Rect::EMPTY_RECT : mCurrentCrop;
-    GLConsumer::computeTransformMatrix(mCurrentTransformMatrix, buf, cropRect, mCurrentTransform,
-                                       mFilteringEnabled);
+    GLConsumer::computeTransformMatrix(mCurrentTransformMatrix, buf, mCurrentCrop,
+                                       mCurrentTransform, mFilteringEnabled);
 }
 
 nsecs_t BufferLayerConsumer::getTimestamp() {
@@ -522,7 +511,7 @@
     }
 
     if (mCurrentFence->isValid()) {
-        if (SyncFeatures::getInstance().useWaitSync()) {
+        if (mRE.useWaitSync()) {
             base::unique_fd fenceFd(mCurrentFence->dup());
             if (fenceFd == -1) {
                 BLC_LOGE("doFenceWait: error dup'ing fence fd: %d", errno);
@@ -606,7 +595,8 @@
     ConsumerBase::dumpLocked(result, prefix);
 }
 
-BufferLayerConsumer::Image::Image(sp<GraphicBuffer> graphicBuffer, RE::RenderEngine& engine)
+BufferLayerConsumer::Image::Image(sp<GraphicBuffer> graphicBuffer,
+                                  renderengine::RenderEngine& engine)
       : mGraphicBuffer(graphicBuffer),
         mImage{engine.createImage()},
         mCreated(false),
@@ -615,23 +605,12 @@
 
 BufferLayerConsumer::Image::~Image() = default;
 
-status_t BufferLayerConsumer::Image::createIfNeeded(const Rect& imageCrop) {
-    const int32_t cropWidth = imageCrop.width();
-    const int32_t cropHeight = imageCrop.height();
-    if (mCreated && mCropWidth == cropWidth && mCropHeight == cropHeight) {
-        return OK;
-    }
+status_t BufferLayerConsumer::Image::createIfNeeded() {
+    if (mCreated) return OK;
 
     mCreated = mImage->setNativeWindowBuffer(mGraphicBuffer->getNativeBuffer(),
-                                             mGraphicBuffer->getUsage() & GRALLOC_USAGE_PROTECTED,
-                                             cropWidth, cropHeight);
-    if (mCreated) {
-        mCropWidth = cropWidth;
-        mCropHeight = cropHeight;
-    } else {
-        mCropWidth = 0;
-        mCropHeight = 0;
-
+                                             mGraphicBuffer->getUsage() & GRALLOC_USAGE_PROTECTED);
+    if (!mCreated) {
         const sp<GraphicBuffer>& buffer = mGraphicBuffer;
         ALOGE("Failed to create image. size=%ux%u st=%u usage=%#" PRIx64 " fmt=%d",
               buffer->getWidth(), buffer->getHeight(), buffer->getStride(), buffer->getUsage(),
diff --git a/services/surfaceflinger/BufferLayerConsumer.h b/services/surfaceflinger/BufferLayerConsumer.h
index f81cdb1..dc00487 100644
--- a/services/surfaceflinger/BufferLayerConsumer.h
+++ b/services/surfaceflinger/BufferLayerConsumer.h
@@ -37,10 +37,10 @@
 class Layer;
 class String8;
 
-namespace RE {
+namespace renderengine {
 class RenderEngine;
 class Image;
-} // namespace RE
+} // namespace renderengine
 
 /*
  * BufferLayerConsumer consumes buffers of graphics data from a BufferQueue,
@@ -73,7 +73,7 @@
     // BufferLayerConsumer constructs a new BufferLayerConsumer object.  The
     // tex parameter indicates the name of the RenderEngine texture to which
     // images are to be streamed.
-    BufferLayerConsumer(const sp<IGraphicBufferConsumer>& bq, RE::RenderEngine& engine,
+    BufferLayerConsumer(const sp<IGraphicBufferConsumer>& bq, renderengine::RenderEngine& engine,
                         uint32_t tex, Layer* layer);
 
     // Sets the contents changed listener. This should be used instead of
@@ -94,7 +94,8 @@
     // used to reject the newly acquired buffer.  It also does not bind the
     // RenderEngine texture until bindTextureImage is called.
     status_t updateTexImage(BufferRejecter* rejecter, const DispSync& dispSync, bool* autoRefresh,
-                            bool* queuedBuffer, uint64_t maxFrameNumber);
+                            bool* queuedBuffer, uint64_t maxFrameNumber,
+                            const sp<Fence>& releaseFence);
 
     // See BufferLayerConsumer::bindTextureImageLocked().
     status_t bindTextureImage();
@@ -208,7 +209,8 @@
     // completion of the method will instead be returned to the caller, so that
     // it may call releaseBufferLocked itself later.
     status_t updateAndReleaseLocked(const BufferItem& item,
-                                    PendingRelease* pendingRelease = nullptr);
+                                    PendingRelease* pendingRelease = nullptr,
+                                    const sp<Fence>& releaseFence = Fence::NO_FENCE);
 
     // Binds mTexName and the current buffer to TEXTURE_EXTERNAL target.  Uses
     // mCurrentTexture if it's set, mCurrentTextureImage if not.  If the
@@ -216,28 +218,27 @@
     status_t bindTextureImageLocked();
 
 private:
-    // Image is a utility class for tracking and creating RE::Images. There
+    // Image is a utility class for tracking and creating renderengine::Images. There
     // is primarily just one image per slot, but there is also special cases:
     //  - After freeBuffer, we must still keep the current image/buffer
-    // Reference counting RE::Images lets us handle all these cases easily while
-    // also only creating new RE::Images from buffers when required.
+    // Reference counting renderengine::Images lets us handle all these cases easily while
+    // also only creating new renderengine::Images from buffers when required.
     class Image : public LightRefBase<Image> {
     public:
-        Image(sp<GraphicBuffer> graphicBuffer, RE::RenderEngine& engine);
+        Image(sp<GraphicBuffer> graphicBuffer, renderengine::RenderEngine& engine);
 
         Image(const Image& rhs) = delete;
         Image& operator=(const Image& rhs) = delete;
 
-        // createIfNeeded creates an RE::Image if required (we haven't created
-        // one yet, or the crop-rect has changed).
-        status_t createIfNeeded(const Rect& imageCrop);
+        // createIfNeeded creates an renderengine::Image if we haven't created one yet.
+        status_t createIfNeeded();
 
         const sp<GraphicBuffer>& graphicBuffer() { return mGraphicBuffer; }
         const native_handle* graphicBufferHandle() {
             return mGraphicBuffer == nullptr ? nullptr : mGraphicBuffer->handle;
         }
 
-        const RE::Image& image() const { return *mImage; }
+        const renderengine::Image& image() const { return *mImage; }
 
     private:
         // Only allow instantiation using ref counting.
@@ -248,7 +249,7 @@
         sp<GraphicBuffer> mGraphicBuffer;
 
         // mImage is the image created from mGraphicBuffer.
-        std::unique_ptr<RE::Image> mImage;
+        std::unique_ptr<renderengine::Image> mImage;
         bool mCreated;
         int32_t mCropWidth;
         int32_t mCropHeight;
@@ -256,7 +257,7 @@
 
     // freeBufferLocked frees up the given buffer slot. If the slot has been
     // initialized this will release the reference to the GraphicBuffer in
-    // that slot and destroy the RE::Image in that slot.  Otherwise it has no
+    // that slot and destroy the renderengine::Image in that slot.  Otherwise it has no
     // effect.
     //
     // This method must be called with mMutex locked.
@@ -283,7 +284,7 @@
     // current slot from RenderEngine.  If needed it will set the current
     // slot's fence to guard against a producer accessing the buffer before
     // the outstanding accesses have completed.
-    status_t syncForReleaseLocked();
+    status_t syncForReleaseLocked(const sp<Fence>& releaseFence);
 
     // The default consumer usage flags that BufferLayerConsumer always sets on its
     // BufferQueue instance; these will be OR:d with any additional flags passed
@@ -352,7 +353,7 @@
     // setFilteringEnabled().
     bool mFilteringEnabled;
 
-    RE::RenderEngine& mRE;
+    renderengine::RenderEngine& mRE;
 
     // mTexName is the name of the RenderEngine texture to which streamed
     // images will be bound when bindTexImage is called. It is set at
diff --git a/services/surfaceflinger/BufferQueueLayer.cpp b/services/surfaceflinger/BufferQueueLayer.cpp
new file mode 100644
index 0000000..6822298
--- /dev/null
+++ b/services/surfaceflinger/BufferQueueLayer.cpp
@@ -0,0 +1,465 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "BufferQueueLayer.h"
+#include "LayerRejecter.h"
+
+#include <system/window.h>
+
+namespace android {
+
+BufferQueueLayer::BufferQueueLayer(const LayerCreationArgs& args) : BufferLayer(args) {}
+
+BufferQueueLayer::~BufferQueueLayer() = default;
+
+// -----------------------------------------------------------------------
+// Interface implementation for Layer
+// -----------------------------------------------------------------------
+
+void BufferQueueLayer::onLayerDisplayed(const sp<Fence>& releaseFence) {
+    mConsumer->setReleaseFence(releaseFence);
+}
+
+void BufferQueueLayer::abandon() {
+    mConsumer->abandon();
+}
+
+void BufferQueueLayer::setTransformHint(uint32_t orientation) const {
+    mConsumer->setTransformHint(orientation);
+}
+
+std::vector<OccupancyTracker::Segment> BufferQueueLayer::getOccupancyHistory(bool forceFlush) {
+    std::vector<OccupancyTracker::Segment> history;
+    status_t result = mConsumer->getOccupancyHistory(forceFlush, &history);
+    if (result != NO_ERROR) {
+        ALOGW("[%s] Failed to obtain occupancy history (%d)", mName.string(), result);
+        return {};
+    }
+    return history;
+}
+
+bool BufferQueueLayer::getTransformToDisplayInverse() const {
+    return mConsumer->getTransformToDisplayInverse();
+}
+
+void BufferQueueLayer::releasePendingBuffer(nsecs_t dequeueReadyTime) {
+    if (!mConsumer->releasePendingBuffer()) {
+        return;
+    }
+
+    auto releaseFenceTime = std::make_shared<FenceTime>(mConsumer->getPrevFinalReleaseFence());
+    mReleaseTimeline.updateSignalTimes();
+    mReleaseTimeline.push(releaseFenceTime);
+
+    Mutex::Autolock lock(mFrameEventHistoryMutex);
+    if (mPreviousFrameNumber != 0) {
+        mFrameEventHistory.addRelease(mPreviousFrameNumber, dequeueReadyTime,
+                                      std::move(releaseFenceTime));
+    }
+}
+
+void BufferQueueLayer::setDefaultBufferSize(uint32_t w, uint32_t h) {
+    mConsumer->setDefaultBufferSize(w, h);
+}
+
+int32_t BufferQueueLayer::getQueuedFrameCount() const {
+    return mQueuedFrames;
+}
+
+bool BufferQueueLayer::shouldPresentNow(const DispSync& dispSync) const {
+    if (getSidebandStreamChanged() || getAutoRefresh()) {
+        return true;
+    }
+
+    if (!hasDrawingBuffer()) {
+        return false;
+    }
+
+    Mutex::Autolock lock(mQueueItemLock);
+
+    const int64_t addedTime = mQueueItems[0].mTimestamp;
+    const nsecs_t expectedPresentTime = mConsumer->computeExpectedPresent(dispSync);
+
+    // Ignore timestamps more than a second in the future
+    const bool isPlausible = addedTime < (expectedPresentTime + s2ns(1));
+    ALOGW_IF(!isPlausible,
+             "[%s] Timestamp %" PRId64 " seems implausible "
+             "relative to expectedPresent %" PRId64,
+             mName.string(), addedTime, expectedPresentTime);
+
+    const bool isDue = addedTime < expectedPresentTime;
+    return isDue || !isPlausible;
+}
+
+// -----------------------------------------------------------------------
+// Interface implementation for BufferLayer
+// -----------------------------------------------------------------------
+
+bool BufferQueueLayer::fenceHasSignaled() const {
+    if (latchUnsignaledBuffers()) {
+        return true;
+    }
+
+    if (!hasDrawingBuffer()) {
+        return true;
+    }
+
+    Mutex::Autolock lock(mQueueItemLock);
+    if (mQueueItems[0].mIsDroppable) {
+        // Even though this buffer's fence may not have signaled yet, it could
+        // be replaced by another buffer before it has a chance to, which means
+        // that it's possible to get into a situation where a buffer is never
+        // able to be latched. To avoid this, grab this buffer anyway.
+        return true;
+    }
+    return mQueueItems[0].mFenceTime->getSignalTime() != Fence::SIGNAL_TIME_PENDING;
+}
+
+nsecs_t BufferQueueLayer::getDesiredPresentTime() {
+    return mConsumer->getTimestamp();
+}
+
+std::shared_ptr<FenceTime> BufferQueueLayer::getCurrentFenceTime() const {
+    return mConsumer->getCurrentFenceTime();
+}
+
+void BufferQueueLayer::getDrawingTransformMatrix(float *matrix) {
+    return mConsumer->getTransformMatrix(matrix);
+}
+
+// NOTE: SurfaceFlinger's definitions of "Current" and "Drawing" do not neatly map to BufferQueue's
+// These functions get the fields for the frame that is currently in SurfaceFlinger's Drawing state
+// so the functions start with "getDrawing". The data is retrieved from the BufferQueueConsumer's
+// current buffer so the consumer functions start with "getCurrent".
+//
+// This results in the rather confusing functions below.
+uint32_t BufferQueueLayer::getDrawingTransform() const {
+    return mConsumer->getCurrentTransform();
+}
+
+ui::Dataspace BufferQueueLayer::getDrawingDataSpace() const {
+    return mConsumer->getCurrentDataSpace();
+}
+
+Rect BufferQueueLayer::getDrawingCrop() const {
+    return mConsumer->getCurrentCrop();
+}
+
+uint32_t BufferQueueLayer::getDrawingScalingMode() const {
+    return mConsumer->getCurrentScalingMode();
+}
+
+Region BufferQueueLayer::getDrawingSurfaceDamage() const {
+    return mConsumer->getSurfaceDamage();
+}
+
+const HdrMetadata& BufferQueueLayer::getDrawingHdrMetadata() const {
+    return mConsumer->getCurrentHdrMetadata();
+}
+
+int BufferQueueLayer::getDrawingApi() const {
+    return mConsumer->getCurrentApi();
+}
+
+PixelFormat BufferQueueLayer::getPixelFormat() const {
+    return mFormat;
+}
+
+uint64_t BufferQueueLayer::getFrameNumber() const {
+    Mutex::Autolock lock(mQueueItemLock);
+    return mQueueItems[0].mFrameNumber;
+}
+
+bool BufferQueueLayer::getAutoRefresh() const {
+    return mAutoRefresh;
+}
+
+bool BufferQueueLayer::getSidebandStreamChanged() const {
+    return mSidebandStreamChanged;
+}
+
+std::optional<Region> BufferQueueLayer::latchSidebandStream(bool& recomputeVisibleRegions) {
+    bool sidebandStreamChanged = true;
+    if (mSidebandStreamChanged.compare_exchange_strong(sidebandStreamChanged, false)) {
+        // mSidebandStreamChanged was changed to false
+        // replicated in LayerBE until FE/BE is ready to be synchronized
+        getBE().compositionInfo.hwc.sidebandStream = mConsumer->getSidebandStream();
+        if (getBE().compositionInfo.hwc.sidebandStream != nullptr) {
+            setTransactionFlags(eTransactionNeeded);
+            mFlinger->setTransactionFlags(eTraversalNeeded);
+        }
+        recomputeVisibleRegions = true;
+
+        const State& s(getDrawingState());
+        return getTransform().transform(Region(Rect(s.active_legacy.w, s.active_legacy.h)));
+    }
+    return {};
+}
+
+bool BufferQueueLayer::hasDrawingBuffer() const {
+    return mQueuedFrames > 0;
+}
+
+void BufferQueueLayer::setFilteringEnabled(bool enabled) {
+    return mConsumer->setFilteringEnabled(enabled);
+}
+
+status_t BufferQueueLayer::bindTextureImage() const {
+    return mConsumer->bindTextureImage();
+}
+
+status_t BufferQueueLayer::updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
+                                          const sp<Fence>& releaseFence) {
+    // This boolean is used to make sure that SurfaceFlinger's shadow copy
+    // of the buffer queue isn't modified when the buffer queue is returning
+    // BufferItem's that weren't actually queued. This can happen in shared
+    // buffer mode.
+    bool queuedBuffer = false;
+    LayerRejecter r(mDrawingState, getCurrentState(), recomputeVisibleRegions,
+                    getProducerStickyTransform() != 0, mName.string(), mOverrideScalingMode,
+                    getTransformToDisplayInverse(), mFreezeGeometryUpdates);
+    status_t updateResult =
+            mConsumer->updateTexImage(&r, *mFlinger->mPrimaryDispSync, &mAutoRefresh, &queuedBuffer,
+                                      mLastFrameNumberReceived, releaseFence);
+    if (updateResult == BufferQueue::PRESENT_LATER) {
+        // Producer doesn't want buffer to be displayed yet.  Signal a
+        // layer update so we check again at the next opportunity.
+        mFlinger->signalLayerUpdate();
+        return BAD_VALUE;
+    } else if (updateResult == BufferLayerConsumer::BUFFER_REJECTED) {
+        // If the buffer has been rejected, remove it from the shadow queue
+        // and return early
+        if (queuedBuffer) {
+            Mutex::Autolock lock(mQueueItemLock);
+            mTimeStats.removeTimeRecord(getName().c_str(), mQueueItems[0].mFrameNumber);
+            mQueueItems.removeAt(0);
+            mQueuedFrames--;
+        }
+        return BAD_VALUE;
+    } else if (updateResult != NO_ERROR || mUpdateTexImageFailed) {
+        // This can occur if something goes wrong when trying to create the
+        // EGLImage for this buffer. If this happens, the buffer has already
+        // been released, so we need to clean up the queue and bug out
+        // early.
+        if (queuedBuffer) {
+            Mutex::Autolock lock(mQueueItemLock);
+            mQueueItems.clear();
+            mQueuedFrames = 0;
+            mTimeStats.clearLayerRecord(getName().c_str());
+        }
+
+        // Once we have hit this state, the shadow queue may no longer
+        // correctly reflect the incoming BufferQueue's contents, so even if
+        // updateTexImage starts working, the only safe course of action is
+        // to continue to ignore updates.
+        mUpdateTexImageFailed = true;
+
+        return BAD_VALUE;
+    }
+
+    if (queuedBuffer) {
+        // Autolock scope
+        auto currentFrameNumber = mConsumer->getFrameNumber();
+
+        Mutex::Autolock lock(mQueueItemLock);
+
+        // Remove any stale buffers that have been dropped during
+        // updateTexImage
+        while (mQueueItems[0].mFrameNumber != currentFrameNumber) {
+            mTimeStats.removeTimeRecord(getName().c_str(), mQueueItems[0].mFrameNumber);
+            mQueueItems.removeAt(0);
+            mQueuedFrames--;
+        }
+
+        const std::string layerName(getName().c_str());
+        mTimeStats.setAcquireFence(layerName, currentFrameNumber, mQueueItems[0].mFenceTime);
+        mTimeStats.setLatchTime(layerName, currentFrameNumber, latchTime);
+
+        mQueueItems.removeAt(0);
+    }
+
+    // Decrement the queued-frames count.  Signal another event if we
+    // have more frames pending.
+    if ((queuedBuffer && mQueuedFrames.fetch_sub(1) > 1) || mAutoRefresh) {
+        mFlinger->signalLayerUpdate();
+    }
+
+    return NO_ERROR;
+}
+
+status_t BufferQueueLayer::updateActiveBuffer() {
+    // update the active buffer
+    mActiveBuffer = mConsumer->getCurrentBuffer(&mActiveBufferSlot);
+    getBE().compositionInfo.mBuffer = mActiveBuffer;
+    getBE().compositionInfo.mBufferSlot = mActiveBufferSlot;
+
+    if (mActiveBuffer == nullptr) {
+        // this can only happen if the very first buffer was rejected.
+        return BAD_VALUE;
+    }
+    return NO_ERROR;
+}
+
+status_t BufferQueueLayer::updateFrameNumber(nsecs_t latchTime) {
+    mPreviousFrameNumber = mCurrentFrameNumber;
+    mCurrentFrameNumber = mConsumer->getFrameNumber();
+
+    {
+        Mutex::Autolock lock(mFrameEventHistoryMutex);
+        mFrameEventHistory.addLatch(mCurrentFrameNumber, latchTime);
+    }
+    return NO_ERROR;
+}
+
+void BufferQueueLayer::setHwcLayerBuffer(const sp<const DisplayDevice>&) {
+    auto acquireFence = mConsumer->getCurrentFence();
+    getBE().compositionInfo.mBufferSlot = mActiveBufferSlot;
+    getBE().compositionInfo.mBuffer = mActiveBuffer;
+    getBE().compositionInfo.hwc.fence = acquireFence;
+}
+
+// -----------------------------------------------------------------------
+// Interface implementation for BufferLayerConsumer::ContentsChangedListener
+// -----------------------------------------------------------------------
+
+void BufferQueueLayer::onFrameAvailable(const BufferItem& item) {
+    // Add this buffer from our internal queue tracker
+    { // Autolock scope
+        Mutex::Autolock lock(mQueueItemLock);
+        // Reset the frame number tracker when we receive the first buffer after
+        // a frame number reset
+        if (item.mFrameNumber == 1) {
+            mLastFrameNumberReceived = 0;
+        }
+
+        // Ensure that callbacks are handled in order
+        while (item.mFrameNumber != mLastFrameNumberReceived + 1) {
+            status_t result = mQueueItemCondition.waitRelative(mQueueItemLock, ms2ns(500));
+            if (result != NO_ERROR) {
+                ALOGE("[%s] Timed out waiting on callback", mName.string());
+            }
+        }
+
+        mQueueItems.push_back(item);
+        mQueuedFrames++;
+
+        // Wake up any pending callbacks
+        mLastFrameNumberReceived = item.mFrameNumber;
+        mQueueItemCondition.broadcast();
+    }
+
+    mFlinger->mInterceptor->saveBufferUpdate(this, item.mGraphicBuffer->getWidth(),
+                                             item.mGraphicBuffer->getHeight(), item.mFrameNumber);
+    mFlinger->signalLayerUpdate();
+}
+
+void BufferQueueLayer::onFrameReplaced(const BufferItem& item) {
+    { // Autolock scope
+        Mutex::Autolock lock(mQueueItemLock);
+
+        // Ensure that callbacks are handled in order
+        while (item.mFrameNumber != mLastFrameNumberReceived + 1) {
+            status_t result = mQueueItemCondition.waitRelative(mQueueItemLock, ms2ns(500));
+            if (result != NO_ERROR) {
+                ALOGE("[%s] Timed out waiting on callback", mName.string());
+            }
+        }
+
+        if (!hasDrawingBuffer()) {
+            ALOGE("Can't replace a frame on an empty queue");
+            return;
+        }
+        mQueueItems.editItemAt(mQueueItems.size() - 1) = item;
+
+        // Wake up any pending callbacks
+        mLastFrameNumberReceived = item.mFrameNumber;
+        mQueueItemCondition.broadcast();
+    }
+}
+
+void BufferQueueLayer::onSidebandStreamChanged() {
+    bool sidebandStreamChanged = false;
+    if (mSidebandStreamChanged.compare_exchange_strong(sidebandStreamChanged, true)) {
+        // mSidebandStreamChanged was changed to true
+        mFlinger->signalLayerUpdate();
+    }
+}
+
+// -----------------------------------------------------------------------
+
+void BufferQueueLayer::onFirstRef() {
+    BufferLayer::onFirstRef();
+
+    // Creates a custom BufferQueue for SurfaceFlingerConsumer to use
+    sp<IGraphicBufferProducer> producer;
+    sp<IGraphicBufferConsumer> consumer;
+    BufferQueue::createBufferQueue(&producer, &consumer, true);
+    mProducer = new MonitoredProducer(producer, mFlinger, this);
+    {
+        // Grab the SF state lock during this since it's the only safe way to access RenderEngine
+        Mutex::Autolock lock(mFlinger->mStateLock);
+        mConsumer =
+                new BufferLayerConsumer(consumer, mFlinger->getRenderEngine(), mTextureName, this);
+    }
+    mConsumer->setConsumerUsageBits(getEffectiveUsage(0));
+    mConsumer->setContentsChangedListener(this);
+    mConsumer->setName(mName);
+
+    if (mFlinger->isLayerTripleBufferingDisabled()) {
+        mProducer->setMaxDequeuedBufferCount(2);
+    }
+
+    if (const auto display = mFlinger->getDefaultDisplayDevice()) {
+        updateTransformHint(display);
+    }
+}
+
+status_t BufferQueueLayer::setDefaultBufferProperties(uint32_t w, uint32_t h, PixelFormat format) {
+    uint32_t const maxSurfaceDims =
+          std::min(mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims());
+
+    // never allow a surface larger than what our underlying GL implementation
+    // can handle.
+    if ((uint32_t(w) > maxSurfaceDims) || (uint32_t(h) > maxSurfaceDims)) {
+        ALOGE("dimensions too large %u x %u", uint32_t(w), uint32_t(h));
+        return BAD_VALUE;
+    }
+
+    mFormat = format;
+
+    setDefaultBufferSize(w, h);
+    mConsumer->setDefaultBufferFormat(format);
+    mConsumer->setConsumerUsageBits(getEffectiveUsage(0));
+
+    return NO_ERROR;
+}
+
+sp<IGraphicBufferProducer> BufferQueueLayer::getProducer() const {
+    return mProducer;
+}
+
+uint32_t BufferQueueLayer::getProducerStickyTransform() const {
+    int producerStickyTransform = 0;
+    int ret = mProducer->query(NATIVE_WINDOW_STICKY_TRANSFORM, &producerStickyTransform);
+    if (ret != OK) {
+        ALOGW("%s: Error %s (%d) while querying window sticky transform.", __FUNCTION__,
+              strerror(-ret), ret);
+        return 0;
+    }
+    return static_cast<uint32_t>(producerStickyTransform);
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/BufferQueueLayer.h b/services/surfaceflinger/BufferQueueLayer.h
new file mode 100644
index 0000000..dcf39ee
--- /dev/null
+++ b/services/surfaceflinger/BufferQueueLayer.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BufferLayer.h"
+
+#include <utils/String8.h>
+
+namespace android {
+
+/*
+ * A new BufferQueue and a new BufferLayerConsumer are created when the
+ * BufferLayer is first referenced.
+ *
+ * This also implements onFrameAvailable(), which notifies SurfaceFlinger
+ * that new data has arrived.
+ */
+class BufferQueueLayer : public BufferLayer, public BufferLayerConsumer::ContentsChangedListener {
+public:
+    explicit BufferQueueLayer(const LayerCreationArgs&);
+    ~BufferQueueLayer() override;
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for Layer
+    // -----------------------------------------------------------------------
+public:
+    void onLayerDisplayed(const sp<Fence>& releaseFence) override;
+
+    void abandon() override;
+
+    void setTransformHint(uint32_t orientation) const override;
+
+    std::vector<OccupancyTracker::Segment> getOccupancyHistory(bool forceFlush) override;
+
+    bool getTransformToDisplayInverse() const override;
+
+    // If a buffer was replaced this frame, release the former buffer
+    void releasePendingBuffer(nsecs_t dequeueReadyTime) override;
+
+    void setDefaultBufferSize(uint32_t w, uint32_t h) override;
+
+    int32_t getQueuedFrameCount() const override;
+
+    bool shouldPresentNow(const DispSync& dispSync) const override;
+    // -----------------------------------------------------------------------
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for BufferLayer
+    // -----------------------------------------------------------------------
+public:
+    bool fenceHasSignaled() const override;
+
+private:
+    nsecs_t getDesiredPresentTime() override;
+    std::shared_ptr<FenceTime> getCurrentFenceTime() const override;
+
+    void getDrawingTransformMatrix(float *matrix) override;
+    uint32_t getDrawingTransform() const override;
+    ui::Dataspace getDrawingDataSpace() const override;
+    Rect getDrawingCrop() const override;
+    uint32_t getDrawingScalingMode() const override;
+    Region getDrawingSurfaceDamage() const override;
+    const HdrMetadata& getDrawingHdrMetadata() const override;
+    int getDrawingApi() const override;
+    PixelFormat getPixelFormat() const override;
+
+    uint64_t getFrameNumber() const override;
+
+    bool getAutoRefresh() const override;
+    bool getSidebandStreamChanged() const override;
+
+    std::optional<Region> latchSidebandStream(bool& recomputeVisibleRegions) override;
+
+    bool hasDrawingBuffer() const override;
+
+    void setFilteringEnabled(bool enabled) override;
+
+    status_t bindTextureImage() const override;
+    status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
+                            const sp<Fence>& releaseFence) override;
+
+    status_t updateActiveBuffer() override;
+    status_t updateFrameNumber(nsecs_t latchTime) override;
+
+    void setHwcLayerBuffer(const sp<const DisplayDevice>& display) override;
+    // -----------------------------------------------------------------------
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for BufferLayerConsumer::ContentsChangedListener
+    // -----------------------------------------------------------------------
+protected:
+    void onFrameAvailable(const BufferItem& item) override;
+    void onFrameReplaced(const BufferItem& item) override;
+    void onSidebandStreamChanged() override;
+    // -----------------------------------------------------------------------
+
+public:
+    status_t setDefaultBufferProperties(uint32_t w, uint32_t h, PixelFormat format);
+
+    sp<IGraphicBufferProducer> getProducer() const;
+
+private:
+    // Temporary - Used only for LEGACY camera mode.
+    uint32_t getProducerStickyTransform() const;
+
+    void onFirstRef() override;
+
+    sp<BufferLayerConsumer> mConsumer;
+    sp<IGraphicBufferProducer> mProducer;
+
+    PixelFormat mFormat{PIXEL_FORMAT_NONE};
+
+    // Only accessed on the main thread.
+    uint64_t mPreviousFrameNumber{0};
+    bool mUpdateTexImageFailed{false};
+
+    // Local copy of the queued contents of the incoming BufferQueue
+    mutable Mutex mQueueItemLock;
+    Condition mQueueItemCondition;
+    Vector<BufferItem> mQueueItems;
+    std::atomic<uint64_t> mLastFrameNumberReceived{0};
+
+    bool mAutoRefresh{false};
+    int mActiveBufferSlot{BufferQueue::INVALID_BUFFER_SLOT};
+
+    // thread-safe
+    std::atomic<int32_t> mQueuedFrames{0};
+    std::atomic<bool> mSidebandStreamChanged{false};
+};
+
+} // namespace android
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
new file mode 100644
index 0000000..2ecf71c
--- /dev/null
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -0,0 +1,544 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//#define LOG_NDEBUG 0
+#undef LOG_TAG
+#define LOG_TAG "BufferStateLayer"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "BufferStateLayer.h"
+
+#include <private/gui/SyncFeatures.h>
+#include <renderengine/Image.h>
+
+namespace android {
+
+// clang-format off
+const std::array<float, 16> BufferStateLayer::IDENTITY_MATRIX{
+        1, 0, 0, 0,
+        0, 1, 0, 0,
+        0, 0, 1, 0,
+        0, 0, 0, 1
+};
+// clang-format on
+
+BufferStateLayer::BufferStateLayer(const LayerCreationArgs& args) : BufferLayer(args) {}
+BufferStateLayer::~BufferStateLayer() = default;
+
+// -----------------------------------------------------------------------
+// Interface implementation for Layer
+// -----------------------------------------------------------------------
+void BufferStateLayer::onLayerDisplayed(const sp<Fence>& /*releaseFence*/) {
+    // TODO(marissaw): send the release fence back to buffer owner
+    return;
+}
+
+void BufferStateLayer::setTransformHint(uint32_t /*orientation*/) const {
+    // TODO(marissaw): send the transform hint to buffer owner
+    return;
+}
+
+void BufferStateLayer::releasePendingBuffer(nsecs_t /*dequeueReadyTime*/) {
+    // TODO(marissaw): use this to signal the buffer owner
+    return;
+}
+
+bool BufferStateLayer::shouldPresentNow(const DispSync& /*dispSync*/) const {
+    if (getSidebandStreamChanged() || getAutoRefresh()) {
+        return true;
+    }
+
+    return hasDrawingBuffer();
+}
+
+bool BufferStateLayer::getTransformToDisplayInverse() const {
+    return mCurrentState.transformToDisplayInverse;
+}
+
+void BufferStateLayer::pushPendingState() {
+    if (!mCurrentState.modified) {
+        return;
+    }
+    mPendingStates.push_back(mCurrentState);
+    ATRACE_INT(mTransactionName.string(), mPendingStates.size());
+}
+
+bool BufferStateLayer::applyPendingStates(Layer::State* stateToCommit) {
+    const bool stateUpdateAvailable = !mPendingStates.empty();
+    while (!mPendingStates.empty()) {
+        popPendingState(stateToCommit);
+    }
+    mCurrentState.modified = false;
+    return stateUpdateAvailable;
+}
+
+Rect BufferStateLayer::getCrop(const Layer::State& s) const {
+    return (getEffectiveScalingMode() == NATIVE_WINDOW_SCALING_MODE_SCALE_CROP)
+            ? GLConsumer::scaleDownCrop(s.crop, s.active.w, s.active.h)
+            : s.crop;
+}
+
+bool BufferStateLayer::setTransform(uint32_t transform) {
+    if (mCurrentState.transform == transform) return false;
+    mCurrentState.sequence++;
+    mCurrentState.transform = transform;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setTransformToDisplayInverse(bool transformToDisplayInverse) {
+    if (mCurrentState.transformToDisplayInverse == transformToDisplayInverse) return false;
+    mCurrentState.sequence++;
+    mCurrentState.transformToDisplayInverse = transformToDisplayInverse;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setCrop(const Rect& crop) {
+    if (mCurrentState.crop == crop) return false;
+    mCurrentState.sequence++;
+    mCurrentState.crop = crop;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setBuffer(sp<GraphicBuffer> buffer) {
+    mCurrentState.sequence++;
+    mCurrentState.buffer = buffer;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setAcquireFence(const sp<Fence>& fence) {
+    mCurrentState.acquireFence = fence;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setDataspace(ui::Dataspace dataspace) {
+    if (mCurrentState.dataspace == dataspace) return false;
+    mCurrentState.sequence++;
+    mCurrentState.dataspace = dataspace;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setHdrMetadata(const HdrMetadata& hdrMetadata) {
+    if (mCurrentState.hdrMetadata == hdrMetadata) return false;
+    mCurrentState.sequence++;
+    mCurrentState.hdrMetadata = hdrMetadata;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setSurfaceDamageRegion(const Region& surfaceDamage) {
+    mCurrentState.sequence++;
+    mCurrentState.surfaceDamageRegion = surfaceDamage;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setApi(int32_t api) {
+    if (mCurrentState.api == api) return false;
+    mCurrentState.sequence++;
+    mCurrentState.api = api;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setSidebandStream(const sp<NativeHandle>& sidebandStream) {
+    if (mCurrentState.sidebandStream == sidebandStream) return false;
+    mCurrentState.sequence++;
+    mCurrentState.sidebandStream = sidebandStream;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+
+    if (!mSidebandStreamChanged.exchange(true)) {
+        // mSidebandStreamChanged was false
+        mFlinger->signalLayerUpdate();
+    }
+    return true;
+}
+
+bool BufferStateLayer::setSize(uint32_t w, uint32_t h) {
+    if (mCurrentState.active.w == w && mCurrentState.active.h == h) return false;
+    mCurrentState.active.w = w;
+    mCurrentState.active.h = h;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setPosition(float x, float y, bool /*immediate*/) {
+    if (mCurrentState.active.transform.tx() == x && mCurrentState.active.transform.ty() == y)
+        return false;
+
+    mCurrentState.active.transform.set(x, y);
+
+    mCurrentState.sequence++;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setTransparentRegionHint(const Region& transparent) {
+    mCurrentState.transparentRegionHint = transparent;
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+bool BufferStateLayer::setMatrix(const layer_state_t::matrix22_t& matrix,
+                                 bool allowNonRectPreservingTransforms) {
+    ui::Transform t;
+    t.set(matrix.dsdx, matrix.dtdy, matrix.dtdx, matrix.dsdy);
+
+    if (!allowNonRectPreservingTransforms && !t.preserveRects()) {
+        ALOGW("Attempt to set rotation matrix without permission ACCESS_SURFACE_FLINGER ignored");
+        return false;
+    }
+
+    mCurrentState.sequence++;
+    mCurrentState.active.transform.set(matrix.dsdx, matrix.dtdy, matrix.dtdx, matrix.dsdy);
+    mCurrentState.modified = true;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+// -----------------------------------------------------------------------
+
+// -----------------------------------------------------------------------
+// Interface implementation for BufferLayer
+// -----------------------------------------------------------------------
+bool BufferStateLayer::fenceHasSignaled() const {
+    if (latchUnsignaledBuffers()) {
+        return true;
+    }
+
+    return getDrawingState().acquireFence->getStatus() == Fence::Status::Signaled;
+}
+
+nsecs_t BufferStateLayer::getDesiredPresentTime() {
+    // TODO(marissaw): support an equivalent to desiredPresentTime for timestats metrics
+    return 0;
+}
+
+std::shared_ptr<FenceTime> BufferStateLayer::getCurrentFenceTime() const {
+    return std::make_shared<FenceTime>(getDrawingState().acquireFence);
+}
+
+void BufferStateLayer::getDrawingTransformMatrix(float *matrix) {
+    std::copy(std::begin(mTransformMatrix), std::end(mTransformMatrix), matrix);
+}
+
+uint32_t BufferStateLayer::getDrawingTransform() const {
+    return getDrawingState().transform;
+}
+
+ui::Dataspace BufferStateLayer::getDrawingDataSpace() const {
+    return getDrawingState().dataspace;
+}
+
+Rect BufferStateLayer::getDrawingCrop() const {
+    return Rect::INVALID_RECT;
+}
+
+uint32_t BufferStateLayer::getDrawingScalingMode() const {
+    return NATIVE_WINDOW_SCALING_MODE_FREEZE;
+}
+
+Region BufferStateLayer::getDrawingSurfaceDamage() const {
+    return getDrawingState().surfaceDamageRegion;
+}
+
+const HdrMetadata& BufferStateLayer::getDrawingHdrMetadata() const {
+    return getDrawingState().hdrMetadata;
+}
+
+int BufferStateLayer::getDrawingApi() const {
+    return getDrawingState().api;
+}
+
+PixelFormat BufferStateLayer::getPixelFormat() const {
+    return mActiveBuffer->format;
+}
+
+uint64_t BufferStateLayer::getFrameNumber() const {
+    return mFrameNumber;
+}
+
+bool BufferStateLayer::getAutoRefresh() const {
+    // TODO(marissaw): support shared buffer mode
+    return false;
+}
+
+bool BufferStateLayer::getSidebandStreamChanged() const {
+    return mSidebandStreamChanged.load();
+}
+
+std::optional<Region> BufferStateLayer::latchSidebandStream(bool& recomputeVisibleRegions) {
+    if (mSidebandStreamChanged.exchange(false)) {
+        const State& s(getDrawingState());
+        // mSidebandStreamChanged was true
+        // replicated in LayerBE until FE/BE is ready to be synchronized
+        getBE().compositionInfo.hwc.sidebandStream = s.sidebandStream;
+        if (getBE().compositionInfo.hwc.sidebandStream != nullptr) {
+            setTransactionFlags(eTransactionNeeded);
+            mFlinger->setTransactionFlags(eTraversalNeeded);
+        }
+        recomputeVisibleRegions = true;
+
+        return getTransform().transform(Region(Rect(s.active.w, s.active.h)));
+    }
+    return {};
+}
+
+bool BufferStateLayer::hasDrawingBuffer() const {
+    return getDrawingState().buffer != nullptr;
+}
+
+void BufferStateLayer::setFilteringEnabled(bool enabled) {
+    GLConsumer::computeTransformMatrix(mTransformMatrix.data(), mActiveBuffer, mCurrentCrop,
+                                       mCurrentTransform, enabled);
+}
+
+status_t BufferStateLayer::bindTextureImage() const {
+    const State& s(getDrawingState());
+    auto& engine(mFlinger->getRenderEngine());
+
+    if (!engine.isCurrent()) {
+        ALOGE("RenderEngine is not current");
+        return INVALID_OPERATION;
+    }
+
+    engine.checkErrors();
+
+    if (!mTextureImage) {
+        ALOGE("no currently-bound texture");
+        engine.bindExternalTextureImage(mTextureName, *engine.createImage());
+        return NO_INIT;
+    }
+
+    bool created =
+            mTextureImage->setNativeWindowBuffer(s.buffer->getNativeBuffer(),
+                                                 s.buffer->getUsage() & GRALLOC_USAGE_PROTECTED);
+    if (!created) {
+        ALOGE("Failed to create image. size=%ux%u st=%u usage=%#" PRIx64 " fmt=%d",
+              s.buffer->getWidth(), s.buffer->getHeight(), s.buffer->getStride(),
+              s.buffer->getUsage(), s.buffer->getPixelFormat());
+        engine.bindExternalTextureImage(mTextureName, *engine.createImage());
+        return NO_INIT;
+    }
+
+    engine.bindExternalTextureImage(mTextureName, *mTextureImage);
+
+    // Wait for the new buffer to be ready.
+    if (s.acquireFence->isValid()) {
+        if (SyncFeatures::getInstance().useWaitSync()) {
+            base::unique_fd fenceFd(s.acquireFence->dup());
+            if (fenceFd == -1) {
+                ALOGE("error dup'ing fence fd: %d", errno);
+                return -errno;
+            }
+            if (!engine.waitFence(std::move(fenceFd))) {
+                ALOGE("failed to wait on fence fd");
+                return UNKNOWN_ERROR;
+            }
+        } else {
+            status_t err = s.acquireFence->waitForever("BufferStateLayer::bindTextureImage");
+            if (err != NO_ERROR) {
+                ALOGE("error waiting for fence: %d", err);
+                return err;
+            }
+        }
+    }
+
+    return NO_ERROR;
+}
+
+status_t BufferStateLayer::updateTexImage(bool& /*recomputeVisibleRegions*/, nsecs_t latchTime,
+                                          const sp<Fence>& releaseFence) {
+    const State& s(getDrawingState());
+
+    if (!s.buffer) {
+        return NO_ERROR;
+    }
+
+    auto& engine(mFlinger->getRenderEngine());
+    if (!engine.isCurrent()) {
+        ALOGE("RenderEngine is not current");
+        return INVALID_OPERATION;
+    }
+    engine.checkErrors();
+
+    // TODO(marissaw): once buffers are cached, don't create a new image everytime
+    mTextureImage = engine.createImage();
+
+    // Reject if the layer is invalid
+    uint32_t bufferWidth = s.buffer->width;
+    uint32_t bufferHeight = s.buffer->height;
+
+    if (s.transform & ui::Transform::ROT_90) {
+        std::swap(bufferWidth, bufferHeight);
+    }
+
+    if (s.transformToDisplayInverse) {
+        uint32_t invTransform = DisplayDevice::getPrimaryDisplayOrientationTransform();
+        if (invTransform & ui::Transform::ROT_90) {
+            std::swap(bufferWidth, bufferHeight);
+        }
+    }
+
+    if (mOverrideScalingMode == NATIVE_WINDOW_SCALING_MODE_FREEZE &&
+        (s.active.w != bufferWidth || s.active.h != bufferHeight)) {
+        ALOGE("[%s] rejecting buffer: "
+              "bufferWidth=%d, bufferHeight=%d, front.active.{w=%d, h=%d}",
+              mName.string(), bufferWidth, bufferHeight, s.active.w, s.active.h);
+        mTimeStats.removeTimeRecord(getName().c_str(), getFrameNumber());
+        return BAD_VALUE;
+    }
+
+    // Handle sync fences
+    if (SyncFeatures::getInstance().useNativeFenceSync() && releaseFence != Fence::NO_FENCE) {
+        // TODO(alecmouri): Fail somewhere upstream if the fence is invalid.
+        if (!releaseFence->isValid()) {
+            mTimeStats.clearLayerRecord(getName().c_str());
+            return UNKNOWN_ERROR;
+        }
+
+        // Check status of fences first because merging is expensive.
+        // Merging an invalid fence with any other fence results in an
+        // invalid fence.
+        auto currentStatus = s.acquireFence->getStatus();
+        if (currentStatus == Fence::Status::Invalid) {
+            ALOGE("Existing fence has invalid state");
+            mTimeStats.clearLayerRecord(getName().c_str());
+            return BAD_VALUE;
+        }
+
+        auto incomingStatus = releaseFence->getStatus();
+        if (incomingStatus == Fence::Status::Invalid) {
+            ALOGE("New fence has invalid state");
+            mDrawingState.acquireFence = releaseFence;
+            mTimeStats.clearLayerRecord(getName().c_str());
+            return BAD_VALUE;
+        }
+
+        // If both fences are signaled or both are unsignaled, we need to merge
+        // them to get an accurate timestamp.
+        if (currentStatus == incomingStatus) {
+            char fenceName[32] = {};
+            snprintf(fenceName, 32, "%.28s:%d", mName.string(), mFrameNumber);
+            sp<Fence> mergedFence =
+                    Fence::merge(fenceName, mDrawingState.acquireFence, releaseFence);
+            if (!mergedFence.get()) {
+                ALOGE("failed to merge release fences");
+                // synchronization is broken, the best we can do is hope fences
+                // signal in order so the new fence will act like a union
+                mDrawingState.acquireFence = releaseFence;
+                mTimeStats.clearLayerRecord(getName().c_str());
+                return BAD_VALUE;
+            }
+            mDrawingState.acquireFence = mergedFence;
+        } else if (incomingStatus == Fence::Status::Unsignaled) {
+            // If one fence has signaled and the other hasn't, the unsignaled
+            // fence will approximately correspond with the correct timestamp.
+            // There's a small race if both fences signal at about the same time
+            // and their statuses are retrieved with unfortunate timing. However,
+            // by this point, they will have both signaled and only the timestamp
+            // will be slightly off; any dependencies after this point will
+            // already have been met.
+            mDrawingState.acquireFence = releaseFence;
+        }
+    } else {
+        // Bind the new buffer to the GL texture.
+        //
+        // Older devices require the "implicit" synchronization provided
+        // by glEGLImageTargetTexture2DOES, which this method calls.  Newer
+        // devices will either call this in Layer::onDraw, or (if it's not
+        // a GL-composited layer) not at all.
+        status_t err = bindTextureImage();
+        if (err != NO_ERROR) {
+            mTimeStats.clearLayerRecord(getName().c_str());
+            return BAD_VALUE;
+        }
+    }
+
+    // TODO(marissaw): properly support mTimeStats
+    const std::string layerName(getName().c_str());
+    mTimeStats.setPostTime(getName().c_str(), getFrameNumber(), latchTime);
+    mTimeStats.setAcquireFence(layerName, getFrameNumber(), getCurrentFenceTime());
+    mTimeStats.setLatchTime(layerName, getFrameNumber(), latchTime);
+
+    return NO_ERROR;
+}
+
+status_t BufferStateLayer::updateActiveBuffer() {
+    const State& s(getDrawingState());
+
+    if (s.buffer == nullptr) {
+        return BAD_VALUE;
+    }
+
+    mActiveBuffer = s.buffer;
+    getBE().compositionInfo.mBuffer = mActiveBuffer;
+    getBE().compositionInfo.mBufferSlot = 0;
+
+    return NO_ERROR;
+}
+
+status_t BufferStateLayer::updateFrameNumber(nsecs_t /*latchTime*/) {
+    // TODO(marissaw): support frame history events
+    mCurrentFrameNumber = mFrameNumber;
+    return NO_ERROR;
+}
+
+void BufferStateLayer::setHwcLayerBuffer(const sp<const DisplayDevice>& display) {
+    const auto displayId = display->getId();
+    auto& hwcInfo = getBE().mHwcLayers[displayId];
+    auto& hwcLayer = hwcInfo.layer;
+
+    const State& s(getDrawingState());
+
+    // TODO(marissaw): support more than one slot
+    uint32_t hwcSlot = 0;
+
+    auto error = hwcLayer->setBuffer(hwcSlot, s.buffer, s.acquireFence);
+    if (error != HWC2::Error::None) {
+        ALOGE("[%s] Failed to set buffer %p: %s (%d)", mName.string(),
+              s.buffer->handle, to_string(error).c_str(), static_cast<int32_t>(error));
+    }
+
+    mFrameNumber++;
+}
+
+void BufferStateLayer::onFirstRef() {
+    BufferLayer::onFirstRef();
+
+    if (const auto display = mFlinger->getDefaultDisplayDevice()) {
+        updateTransformHint(display);
+    }
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/BufferStateLayer.h b/services/surfaceflinger/BufferStateLayer.h
new file mode 100644
index 0000000..db11110
--- /dev/null
+++ b/services/surfaceflinger/BufferStateLayer.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BufferLayer.h"
+#include "Layer.h"
+
+#include <gui/GLConsumer.h>
+#include <renderengine/Image.h>
+#include <renderengine/RenderEngine.h>
+#include <system/window.h>
+#include <utils/String8.h>
+
+namespace android {
+
+class BufferStateLayer : public BufferLayer {
+public:
+    explicit BufferStateLayer(const LayerCreationArgs&);
+    ~BufferStateLayer() override;
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for Layer
+    // -----------------------------------------------------------------------
+    void onLayerDisplayed(const sp<Fence>& releaseFence) override;
+    void setTransformHint(uint32_t orientation) const override;
+    void releasePendingBuffer(nsecs_t dequeueReadyTime) override;
+
+    bool shouldPresentNow(const DispSync& dispSync) const override;
+
+    bool getTransformToDisplayInverse() const override;
+
+    uint32_t doTransactionResize(uint32_t flags, Layer::State* /*stateToCommit*/) override {
+        return flags;
+    }
+    void pushPendingState() override;
+    bool applyPendingStates(Layer::State* stateToCommit) override;
+
+    uint32_t getActiveWidth(const Layer::State& s) const override { return s.active.w; }
+    uint32_t getActiveHeight(const Layer::State& s) const override { return s.active.h; }
+    ui::Transform getActiveTransform(const Layer::State& s) const override {
+        return s.active.transform;
+    }
+    Region getActiveTransparentRegion(const Layer::State& s) const override {
+        return s.transparentRegionHint;
+    }
+    Rect getCrop(const Layer::State& s) const;
+
+    bool setTransform(uint32_t transform) override;
+    bool setTransformToDisplayInverse(bool transformToDisplayInverse) override;
+    bool setCrop(const Rect& crop) override;
+    bool setBuffer(sp<GraphicBuffer> buffer) override;
+    bool setAcquireFence(const sp<Fence>& fence) override;
+    bool setDataspace(ui::Dataspace dataspace) override;
+    bool setHdrMetadata(const HdrMetadata& hdrMetadata) override;
+    bool setSurfaceDamageRegion(const Region& surfaceDamage) override;
+    bool setApi(int32_t api) override;
+    bool setSidebandStream(const sp<NativeHandle>& sidebandStream) override;
+
+    bool setSize(uint32_t w, uint32_t h) override;
+    bool setPosition(float x, float y, bool immediate) override;
+    bool setTransparentRegionHint(const Region& transparent) override;
+    bool setMatrix(const layer_state_t::matrix22_t& matrix,
+                   bool allowNonRectPreservingTransforms) override;
+
+    // Override to ignore legacy layer state properties that are not used by BufferStateLayer
+    bool setCrop_legacy(const Rect& /*crop*/, bool /*immediate*/) override { return false; };
+    void deferTransactionUntil_legacy(const sp<IBinder>& /*barrierHandle*/,
+                                      uint64_t /*frameNumber*/) override {}
+    void deferTransactionUntil_legacy(const sp<Layer>& /*barrierLayer*/,
+                                      uint64_t /*frameNumber*/) override {}
+    // -----------------------------------------------------------------------
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for BufferLayer
+    // -----------------------------------------------------------------------
+    bool fenceHasSignaled() const override;
+
+private:
+    nsecs_t getDesiredPresentTime() override;
+    std::shared_ptr<FenceTime> getCurrentFenceTime() const override;
+
+    void getDrawingTransformMatrix(float *matrix) override;
+    uint32_t getDrawingTransform() const override;
+    ui::Dataspace getDrawingDataSpace() const override;
+    Rect getDrawingCrop() const override;
+    uint32_t getDrawingScalingMode() const override;
+    Region getDrawingSurfaceDamage() const override;
+    const HdrMetadata& getDrawingHdrMetadata() const override;
+    int getDrawingApi() const override;
+    PixelFormat getPixelFormat() const override;
+
+    uint64_t getFrameNumber() const override;
+
+    bool getAutoRefresh() const override;
+    bool getSidebandStreamChanged() const override;
+
+    std::optional<Region> latchSidebandStream(bool& recomputeVisibleRegions) override;
+
+    bool hasDrawingBuffer() const override;
+
+    void setFilteringEnabled(bool enabled) override;
+
+    status_t bindTextureImage() const override;
+    status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
+                            const sp<Fence>& releaseFence) override;
+
+    status_t updateActiveBuffer() override;
+    status_t updateFrameNumber(nsecs_t latchTime) override;
+
+    void setHwcLayerBuffer(const sp<const DisplayDevice>& display) override;
+    // -----------------------------------------------------------------------
+private:
+    void onFirstRef() override;
+
+    static const std::array<float, 16> IDENTITY_MATRIX;
+
+    std::unique_ptr<renderengine::Image> mTextureImage;
+
+    std::array<float, 16> mTransformMatrix{IDENTITY_MATRIX};
+
+    std::atomic<bool> mSidebandStreamChanged{false};
+
+    uint32_t mFrameNumber{0};
+
+    // TODO(marissaw): support sticky transform for LEGACY camera mode
+};
+
+} // namespace android
diff --git a/services/surfaceflinger/ColorLayer.cpp b/services/surfaceflinger/ColorLayer.cpp
index ff957c0..3a554c9 100644
--- a/services/surfaceflinger/ColorLayer.cpp
+++ b/services/surfaceflinger/ColorLayer.cpp
@@ -22,85 +22,60 @@
 #include <stdlib.h>
 #include <sys/types.h>
 
+#include <renderengine/RenderEngine.h>
+#include <ui/GraphicBuffer.h>
 #include <utils/Errors.h>
 #include <utils/Log.h>
 
-#include <ui/GraphicBuffer.h>
-
 #include "ColorLayer.h"
 #include "DisplayDevice.h"
-#include "RenderEngine/RenderEngine.h"
 #include "SurfaceFlinger.h"
 
 namespace android {
 // ---------------------------------------------------------------------------
 
-ColorLayer::ColorLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name,
-                       uint32_t w, uint32_t h, uint32_t flags)
-      : Layer(flinger, client, name, w, h, flags) {
-    // drawing state & current state are identical
-    mDrawingState = mCurrentState;
-}
+ColorLayer::ColorLayer(const LayerCreationArgs& args) : Layer(args) {}
+
+ColorLayer::~ColorLayer() = default;
 
 void ColorLayer::onDraw(const RenderArea& renderArea, const Region& /* clip */,
-                        bool useIdentityTransform) const {
+                        bool useIdentityTransform) {
     half4 color = getColor();
     if (color.a > 0) {
-        Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2);
+        renderengine::Mesh mesh(renderengine::Mesh::TRIANGLE_FAN, 4, 2);
         computeGeometry(renderArea, mesh, useIdentityTransform);
         auto& engine(mFlinger->getRenderEngine());
         engine.setupLayerBlending(getPremultipledAlpha(), false /* opaque */,
                                   true /* disableTexture */, color);
+        engine.setSourceDataSpace(mCurrentDataSpace);
         engine.drawMesh(mesh);
         engine.disableBlending();
     }
 }
 
 bool ColorLayer::isVisible() const {
-    const Layer::State& s(getDrawingState());
-    return !isHiddenByPolicy() && s.color.a;
+    return !isHiddenByPolicy() && getAlpha() > 0.0f;
 }
 
-void ColorLayer::setPerFrameData(const sp<const DisplayDevice>& displayDevice) {
-    const Transform& tr = displayDevice->getTransform();
-    const auto& viewport = displayDevice->getViewport();
+void ColorLayer::setPerFrameData(const sp<const DisplayDevice>& display) {
+    const ui::Transform& tr = display->getTransform();
+    const auto& viewport = display->getViewport();
     Region visible = tr.transform(visibleRegion.intersect(viewport));
-    auto hwcId = displayDevice->getHwcDisplayId();
-    if (!hasHwcLayer(hwcId)) {
-        return;
-    }
-    auto& hwcInfo = getBE().mHwcLayers[hwcId];
-    auto& hwcLayer = hwcInfo.layer;
-    auto error = hwcLayer->setVisibleRegion(visible);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set visible region: %s (%d)", mName.string(),
-              to_string(error).c_str(), static_cast<int32_t>(error));
-        visible.dump(LOG_TAG);
-    }
+    const auto displayId = display->getId();
+    getBE().compositionInfo.hwc.visibleRegion = visible;
+    getBE().compositionInfo.hwc.dataspace = mCurrentDataSpace;
 
-    setCompositionType(hwcId, HWC2::Composition::SolidColor);
-
-    error = hwcLayer->setDataspace(mCurrentDataSpace);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set dataspace %d: %s (%d)", mName.string(), mCurrentDataSpace,
-              to_string(error).c_str(), static_cast<int32_t>(error));
-    }
+    setCompositionType(displayId, HWC2::Composition::SolidColor);
+    getBE().compositionInfo.hwc.dataspace = mCurrentDataSpace;
 
     half4 color = getColor();
-    error = hwcLayer->setColor({static_cast<uint8_t>(std::round(255.0f * color.r)),
-                                static_cast<uint8_t>(std::round(255.0f * color.g)),
-                                static_cast<uint8_t>(std::round(255.0f * color.b)), 255});
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set color: %s (%d)", mName.string(), to_string(error).c_str(),
-              static_cast<int32_t>(error));
-    }
+    getBE().compositionInfo.hwc.color = {static_cast<uint8_t>(std::round(255.0f * color.r)),
+                                         static_cast<uint8_t>(std::round(255.0f * color.g)),
+                                         static_cast<uint8_t>(std::round(255.0f * color.b)), 255};
 
     // Clear out the transform, because it doesn't make sense absent a source buffer
-    error = hwcLayer->setTransform(HWC2::Transform::None);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to clear transform: %s (%d)", mName.string(), to_string(error).c_str(),
-              static_cast<int32_t>(error));
-    }
+    getBE().compositionInfo.hwc.transform = HWC2::Transform::None;
+    getBE().compositionInfo.hwc.colorTransform = getColorTransform();
 }
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/ColorLayer.h b/services/surfaceflinger/ColorLayer.h
index 0cde398..2c10357 100644
--- a/services/surfaceflinger/ColorLayer.h
+++ b/services/surfaceflinger/ColorLayer.h
@@ -25,16 +25,18 @@
 
 class ColorLayer : public Layer {
 public:
-    ColorLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name, uint32_t w,
-               uint32_t h, uint32_t flags);
-    virtual ~ColorLayer() = default;
+    explicit ColorLayer(const LayerCreationArgs&);
+    ~ColorLayer() override;
 
     virtual const char* getTypeId() const { return "ColorLayer"; }
     virtual void onDraw(const RenderArea& renderArea, const Region& clip,
-                        bool useIdentityTransform) const;
+                        bool useIdentityTransform);
     bool isVisible() const override;
 
-    void setPerFrameData(const sp<const DisplayDevice>& displayDevice) override;
+    void setPerFrameData(const sp<const DisplayDevice>& display) override;
+
+protected:
+    FloatRect computeCrop(const sp<const DisplayDevice>& /*display*/) const override { return {}; }
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/ContainerLayer.cpp b/services/surfaceflinger/ContainerLayer.cpp
index f259d93..44e843e 100644
--- a/services/surfaceflinger/ContainerLayer.cpp
+++ b/services/surfaceflinger/ContainerLayer.cpp
@@ -22,13 +22,11 @@
 
 namespace android {
 
-ContainerLayer::ContainerLayer(SurfaceFlinger* flinger, const sp<Client>& client,
-                               const String8& name, uint32_t w, uint32_t h, uint32_t flags)
-      : Layer(flinger, client, name, w, h, flags) {
-    mDrawingState = mCurrentState;
-}
+ContainerLayer::ContainerLayer(const LayerCreationArgs& args) : Layer(args) {}
 
-void ContainerLayer::onDraw(const RenderArea&, const Region& /* clip */, bool) const {}
+ContainerLayer::~ContainerLayer() = default;
+
+void ContainerLayer::onDraw(const RenderArea&, const Region& /* clip */, bool) {}
 
 bool ContainerLayer::isVisible() const {
     return !isHiddenByPolicy();
diff --git a/services/surfaceflinger/ContainerLayer.h b/services/surfaceflinger/ContainerLayer.h
index b352b96..8eddc7f 100644
--- a/services/surfaceflinger/ContainerLayer.h
+++ b/services/surfaceflinger/ContainerLayer.h
@@ -25,16 +25,15 @@
 
 class ContainerLayer : public Layer {
 public:
-    ContainerLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name,
-                   uint32_t w, uint32_t h, uint32_t flags);
-    virtual ~ContainerLayer() = default;
+    explicit ContainerLayer(const LayerCreationArgs&);
+    ~ContainerLayer() override;
 
     const char* getTypeId() const override { return "ContainerLayer"; }
     void onDraw(const RenderArea& renderArea, const Region& clip,
-                bool useIdentityTransform) const override;
+                bool useIdentityTransform) override;
     bool isVisible() const override;
 
-    void setPerFrameData(const sp<const DisplayDevice>& displayDevice) override;
+    void setPerFrameData(const sp<const DisplayDevice>& display) override;
 
     bool isCreatedFromMainThread() const override { return true; }
 };
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index db095a5..341dfd5 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -18,6 +18,8 @@
 #undef LOG_TAG
 #define LOG_TAG "DisplayDevice"
 
+#include "DisplayDevice.h"
+
 #include <array>
 #include <unordered_set>
 
@@ -26,32 +28,24 @@
 #include <string.h>
 #include <math.h>
 
+#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
+#include <configstore/Utils.h>
 #include <cutils/properties.h>
-
-#include <utils/RefBase.h>
-#include <utils/Log.h>
-
+#include <gui/Surface.h>
+#include <hardware/gralloc.h>
+#include <renderengine/RenderEngine.h>
 #include <ui/DebugUtils.h>
 #include <ui/DisplayInfo.h>
 #include <ui/PixelFormat.h>
-
-#include <gui/Surface.h>
-
-#include <hardware/gralloc.h>
+#include <utils/RefBase.h>
+#include <utils/Log.h>
 
 #include "DisplayHardware/DisplaySurface.h"
 #include "DisplayHardware/HWComposer.h"
 #include "DisplayHardware/HWC2.h"
-#include "RenderEngine/RenderEngine.h"
-
-#include "clz.h"
-#include "DisplayDevice.h"
 #include "SurfaceFlinger.h"
 #include "Layer.h"
 
-#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
-#include <configstore/Utils.h>
-
 namespace android {
 
 // retrieve triple buffer setting from configstore
@@ -212,52 +206,46 @@
 
 } // anonymous namespace
 
-// clang-format off
-DisplayDevice::DisplayDevice(
-        const sp<SurfaceFlinger>& flinger,
-        DisplayType type,
-        int32_t hwcId,
-        bool isSecure,
-        const wp<IBinder>& displayToken,
-        const sp<ANativeWindow>& nativeWindow,
-        const sp<DisplaySurface>& displaySurface,
-        std::unique_ptr<RE::Surface> renderSurface,
-        int displayWidth,
-        int displayHeight,
-        bool hasWideColorGamut,
-        const HdrCapabilities& hdrCapabilities,
-        const int32_t supportedPerFrameMetadata,
-        const std::unordered_map<ColorMode, std::vector<RenderIntent>>& hwcColorModes,
-        int initialPowerMode)
-    : lastCompositionHadVisibleLayers(false),
-      mFlinger(flinger),
-      mType(type),
-      mHwcDisplayId(hwcId),
-      mDisplayToken(displayToken),
-      mNativeWindow(nativeWindow),
-      mDisplaySurface(displaySurface),
-      mSurface{std::move(renderSurface)},
-      mDisplayWidth(displayWidth),
-      mDisplayHeight(displayHeight),
-      mPageFlipCount(0),
-      mIsSecure(isSecure),
-      mLayerStack(NO_LAYER_STACK),
-      mOrientation(),
-      mViewport(Rect::INVALID_RECT),
-      mFrame(Rect::INVALID_RECT),
-      mPowerMode(initialPowerMode),
-      mActiveConfig(0),
-      mColorTransform(HAL_COLOR_TRANSFORM_IDENTITY),
-      mHasWideColorGamut(hasWideColorGamut),
-      mHasHdr10(false),
-      mHasHLG(false),
-      mHasDolbyVision(false),
-      mSupportedPerFrameMetadata(supportedPerFrameMetadata)
-{
-    // clang-format on
-    populateColorModes(hwcColorModes);
+DisplayDeviceCreationArgs::DisplayDeviceCreationArgs(const sp<SurfaceFlinger>& flinger,
+                                                     const wp<IBinder>& displayToken,
+                                                     DisplayDevice::DisplayType type, int32_t id)
+      : flinger(flinger), displayToken(displayToken), type(type), id(id) {}
 
-    std::vector<Hdr> types = hdrCapabilities.getSupportedHdrTypes();
+DisplayDevice::DisplayDevice(DisplayDeviceCreationArgs&& args)
+      : lastCompositionHadVisibleLayers(false),
+        mFlinger(args.flinger),
+        mType(args.type),
+        mId(args.id),
+        mDisplayToken(args.displayToken),
+        mNativeWindow(args.nativeWindow),
+        mDisplaySurface(args.displaySurface),
+        mSurface{std::move(args.renderSurface)},
+        mDisplayWidth(args.displayWidth),
+        mDisplayHeight(args.displayHeight),
+        mDisplayInstallOrientation(args.displayInstallOrientation),
+        mPageFlipCount(0),
+        mIsSecure(args.isSecure),
+        mLayerStack(NO_LAYER_STACK),
+        mOrientation(),
+        mViewport(Rect::INVALID_RECT),
+        mFrame(Rect::INVALID_RECT),
+        mPowerMode(args.initialPowerMode),
+        mActiveConfig(0),
+        mColorTransform(HAL_COLOR_TRANSFORM_IDENTITY),
+        mHasWideColorGamut(args.hasWideColorGamut),
+        mHasHdr10(false),
+        mHasHLG(false),
+        mHasDolbyVision(false),
+        mSupportedPerFrameMetadata(args.supportedPerFrameMetadata) {
+    populateColorModes(args.hwcColorModes);
+
+    ALOGE_IF(!mNativeWindow, "No native window was set for display");
+    ALOGE_IF(!mDisplaySurface, "No display surface was set for display");
+    ALOGE_IF(!mSurface, "No render surface was set for display");
+    ALOGE_IF(mDisplayWidth <= 0 || mDisplayHeight <= 0,
+             "Invalid dimensions of %d x %d were set for display", mDisplayWidth, mDisplayHeight);
+
+    std::vector<Hdr> types = args.hdrCapabilities.getSupportedHdrTypes();
     for (Hdr hdrType : types) {
         switch (hdrType) {
             case Hdr::HDR10:
@@ -274,9 +262,9 @@
         }
     }
 
-    float minLuminance = hdrCapabilities.getDesiredMinLuminance();
-    float maxLuminance = hdrCapabilities.getDesiredMaxLuminance();
-    float maxAverageLuminance = hdrCapabilities.getDesiredMaxAverageLuminance();
+    float minLuminance = args.hdrCapabilities.getDesiredMinLuminance();
+    float maxLuminance = args.hdrCapabilities.getDesiredMaxLuminance();
+    float maxAverageLuminance = args.hdrCapabilities.getDesiredMaxAverageLuminance();
 
     minLuminance = minLuminance <= 0.0 ? sDefaultMinLumiance : minLuminance;
     maxLuminance = maxLuminance <= 0.0 ? sDefaultMaxLumiance : maxLuminance;
@@ -301,9 +289,9 @@
 DisplayDevice::~DisplayDevice() = default;
 
 void DisplayDevice::disconnect(HWComposer& hwc) {
-    if (mHwcDisplayId >= 0) {
-        hwc.disconnectDisplay(mHwcDisplayId);
-        mHwcDisplayId = -1;
+    if (mId >= 0) {
+        hwc.disconnectDisplay(mId);
+        mId = -1;
     }
 }
 
@@ -319,8 +307,8 @@
     return mDisplayHeight;
 }
 
-void DisplayDevice::setDisplayName(const String8& displayName) {
-    if (!displayName.isEmpty()) {
+void DisplayDevice::setDisplayName(const std::string& displayName) {
+    if (!displayName.empty()) {
         // never override the name with an empty name
         mDisplayName = displayName;
     }
@@ -340,15 +328,16 @@
     return mDisplaySurface->beginFrame(mustRecompose);
 }
 
-status_t DisplayDevice::prepareFrame(HWComposer& hwc) {
-    status_t error = hwc.prepare(*this);
+status_t DisplayDevice::prepareFrame(HWComposer& hwc,
+        std::vector<CompositionInfo>& compositionData) {
+    status_t error = hwc.prepare(*this, compositionData);
     if (error != NO_ERROR) {
         return error;
     }
 
     DisplaySurface::CompositionType compositionType;
-    bool hasClient = hwc.hasClientComposition(mHwcDisplayId);
-    bool hasDevice = hwc.hasDeviceComposition(mHwcDisplayId);
+    bool hasClient = hwc.hasClientComposition(mId);
+    bool hasDevice = hwc.hasDeviceComposition(mId);
     if (hasClient && hasDevice) {
         compositionType = DisplaySurface::COMPOSITION_MIXED;
     } else if (hasClient) {
@@ -365,14 +354,13 @@
 }
 
 void DisplayDevice::swapBuffers(HWComposer& hwc) const {
-    if (hwc.hasClientComposition(mHwcDisplayId) || hwc.hasFlipClientTargetRequest(mHwcDisplayId)) {
+    if (hwc.hasClientComposition(mId) || hwc.hasFlipClientTargetRequest(mId)) {
         mSurface->swapBuffers();
     }
 
     status_t result = mDisplaySurface->advanceFrame();
     if (result != NO_ERROR) {
-        ALOGE("[%s] failed pushing new frame to HWC: %d",
-                mDisplayName.string(), result);
+        ALOGE("[%s] failed pushing new frame to HWC: %d", mDisplayName.c_str(), result);
     }
 }
 
@@ -390,8 +378,7 @@
     size_t w = mDisplayWidth;
     size_t h = mDisplayHeight;
     Rect sourceCrop(0, 0, w, h);
-    mFlinger->getRenderEngine().setViewportAndProjection(w, h, sourceCrop, h,
-        false, Transform::ROT_0);
+    mFlinger->getRenderEngine().setViewportAndProjection(w, h, sourceCrop, ui::Transform::ROT_0);
 }
 
 const sp<Fence>& DisplayDevice::getClientTargetAcquireFence() const {
@@ -421,7 +408,7 @@
     if (repaintEverything) {
         dirty.set(getBounds());
     } else {
-        const Transform& planeTransform(mGlobalTransform);
+        const ui::Transform& planeTransform(mGlobalTransform);
         dirty = planeTransform.transform(this->dirtyRegion);
         dirty.andSelf(getBounds());
     }
@@ -437,8 +424,8 @@
     return mPowerMode;
 }
 
-bool DisplayDevice::isDisplayOn() const {
-    return (mPowerMode != HWC_POWER_MODE_OFF);
+bool DisplayDevice::isPoweredOn() const {
+    return mPowerMode != HWC_POWER_MODE_OFF;
 }
 
 // ----------------------------------------------------------------------------
@@ -500,37 +487,37 @@
     uint32_t transform = 0;
     switch (mOrientation) {
         case DisplayState::eOrientationDefault:
-            transform = Transform::ROT_0;
+            transform = ui::Transform::ROT_0;
             break;
         case DisplayState::eOrientation90:
-            transform = Transform::ROT_90;
+            transform = ui::Transform::ROT_90;
             break;
         case DisplayState::eOrientation180:
-            transform = Transform::ROT_180;
+            transform = ui::Transform::ROT_180;
             break;
         case DisplayState::eOrientation270:
-            transform = Transform::ROT_270;
+            transform = ui::Transform::ROT_270;
             break;
     }
     return transform;
 }
 
 status_t DisplayDevice::orientationToTransfrom(
-        int orientation, int w, int h, Transform* tr)
+        int orientation, int w, int h, ui::Transform* tr)
 {
     uint32_t flags = 0;
     switch (orientation) {
     case DisplayState::eOrientationDefault:
-        flags = Transform::ROT_0;
+        flags = ui::Transform::ROT_0;
         break;
     case DisplayState::eOrientation90:
-        flags = Transform::ROT_90;
+        flags = ui::Transform::ROT_90;
         break;
     case DisplayState::eOrientation180:
-        flags = Transform::ROT_180;
+        flags = ui::Transform::ROT_180;
         break;
     case DisplayState::eOrientation270:
-        flags = Transform::ROT_270;
+        flags = ui::Transform::ROT_270;
         break;
     default:
         return BAD_VALUE;
@@ -548,8 +535,8 @@
 
     ANativeWindow* const window = mNativeWindow.get();
     mSurface->setNativeWindow(window);
-    mDisplayWidth = mSurface->queryWidth();
-    mDisplayHeight = mSurface->queryHeight();
+    mDisplayWidth = mSurface->getWidth();
+    mDisplayHeight = mSurface->getHeight();
 
     LOG_FATAL_IF(mDisplayWidth != newWidth,
                 "Unable to set new width to %d", newWidth);
@@ -565,7 +552,7 @@
     const int w = mDisplayWidth;
     const int h = mDisplayHeight;
 
-    Transform R;
+    ui::Transform R;
     DisplayDevice::orientationToTransfrom(orientation, w, h, &R);
 
     if (!frame.isValid()) {
@@ -580,16 +567,16 @@
         // it's also invalid to have an empty viewport, so we handle that
         // case in the same way.
         viewport = Rect(w, h);
-        if (R.getOrientation() & Transform::ROT_90) {
+        if (R.getOrientation() & ui::Transform::ROT_90) {
             // viewport is always specified in the logical orientation
             // of the display (ie: post-rotation).
-            swap(viewport.right, viewport.bottom);
+            std::swap(viewport.right, viewport.bottom);
         }
     }
 
     dirtyRegion.set(getBounds());
 
-    Transform TL, TP, S;
+    ui::Transform TL, TP, S;
     float src_width  = viewport.width();
     float src_height = viewport.height();
     float dst_width  = frame.width();
@@ -610,9 +597,8 @@
     // need to take care of primary display rotation for mGlobalTransform
     // for case if the panel is not installed aligned with device orientation
     if (mType == DisplayType::DISPLAY_PRIMARY) {
-        int primaryDisplayOrientation = mFlinger->getPrimaryDisplayOrientation();
         DisplayDevice::orientationToTransfrom(
-                (orientation + primaryDisplayOrientation) % (DisplayState::eOrientation270 + 1),
+                (orientation + mDisplayInstallOrientation) % (DisplayState::eOrientation270 + 1),
                 w, h, &R);
     }
 
@@ -623,7 +609,7 @@
 
     const uint8_t type = mGlobalTransform.getType();
     mNeedsFiltering = (!mGlobalTransform.preserveRects() ||
-            (type >= Transform::SCALE));
+            (type >= ui::Transform::SCALE));
 
     mScissor = mGlobalTransform.transform(viewport);
     if (mScissor.isEmpty()) {
@@ -631,20 +617,20 @@
     }
 
     mOrientation = orientation;
-    if (mType == DisplayType::DISPLAY_PRIMARY) {
+    if (isPrimary()) {
         uint32_t transform = 0;
         switch (mOrientation) {
             case DisplayState::eOrientationDefault:
-                transform = Transform::ROT_0;
+                transform = ui::Transform::ROT_0;
                 break;
             case DisplayState::eOrientation90:
-                transform = Transform::ROT_90;
+                transform = ui::Transform::ROT_90;
                 break;
             case DisplayState::eOrientation180:
-                transform = Transform::ROT_180;
+                transform = ui::Transform::ROT_180;
                 break;
             case DisplayState::eOrientation270:
-                transform = Transform::ROT_270;
+                transform = ui::Transform::ROT_270;
                 break;
         }
         sPrimaryDisplayOrientation = transform;
@@ -658,13 +644,13 @@
 }
 
 void DisplayDevice::dump(String8& result) const {
-    const Transform& tr(mGlobalTransform);
+    const ui::Transform& tr(mGlobalTransform);
     ANativeWindow* const window = mNativeWindow.get();
-    result.appendFormat("+ DisplayDevice: %s\n", mDisplayName.string());
-    result.appendFormat("   type=%x, hwcId=%d, layerStack=%u, (%4dx%4d), ANativeWindow=%p "
+    result.appendFormat("+ DisplayDevice: %s\n", mDisplayName.c_str());
+    result.appendFormat("   type=%x, ID=%d, layerStack=%u, (%4dx%4d), ANativeWindow=%p "
                         "(%d:%d:%d:%d), orient=%2d (type=%08x), "
                         "flips=%u, isSecure=%d, powerMode=%d, activeConfig=%d, numLayers=%zu\n",
-                        mType, mHwcDisplayId, mLayerStack, mDisplayWidth, mDisplayHeight, window,
+                        mType, mId, mLayerStack, mDisplayWidth, mDisplayHeight, window,
                         mSurface->queryRedSize(), mSurface->queryGreenSize(),
                         mSurface->queryBlueSize(), mSurface->queryAlphaSize(), mOrientation,
                         tr.getType(), getPageFlipCount(), mIsSecure, mPowerMode, mActiveConfig,
@@ -704,7 +690,7 @@
     const Dataspace dataspace = colorModeToDataspace(mode);
     const Dataspace hwcDataspace = colorModeToDataspace(hwcColorMode);
 
-    ALOGV("DisplayDevice %d/%d: map (%s, %s) to (%s, %s, %s)", mType, mHwcDisplayId,
+    ALOGV("DisplayDevice %d/%d: map (%s, %s) to (%s, %s, %s)", mType, mId,
           dataspaceDetails(static_cast<android_dataspace_t>(dataspace)).c_str(),
           decodeRenderIntent(intent).c_str(),
           dataspaceDetails(static_cast<android_dataspace_t>(hwcDataspace)).c_str(),
@@ -791,18 +777,6 @@
     }
 }
 
-std::atomic<int32_t> DisplayDeviceState::nextDisplayId(1);
-
-DisplayDeviceState::DisplayDeviceState(DisplayDevice::DisplayType type, bool isSecure)
-    : type(type),
-      layerStack(DisplayDevice::NO_LAYER_STACK),
-      orientation(0),
-      width(0),
-      height(0),
-      isSecure(isSecure)
-{
-    viewport.makeInvalid();
-    frame.makeInvalid();
-}
+std::atomic<int32_t> DisplayDeviceState::sNextSequenceId(1);
 
 }  // namespace android
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
index 6c3bd91..38482c9 100644
--- a/services/surfaceflinger/DisplayDevice.h
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -17,40 +17,42 @@
 #ifndef ANDROID_DISPLAY_DEVICE_H
 #define ANDROID_DISPLAY_DEVICE_H
 
-#include "Transform.h"
-
 #include <stdlib.h>
+
+#include <memory>
+#include <string>
 #include <unordered_map>
 
-#include <math/mat4.h>
-
 #include <binder/IBinder.h>
-#include <gui/ISurfaceComposer.h>
+#include <gui/LayerState.h>
 #include <hardware/hwcomposer_defs.h>
+#include <math/mat4.h>
+#include <renderengine/Surface.h>
 #include <ui/GraphicTypes.h>
 #include <ui/HdrCapabilities.h>
 #include <ui/Region.h>
+#include <ui/Transform.h>
 #include <utils/RefBase.h>
 #include <utils/Mutex.h>
 #include <utils/String8.h>
 #include <utils/Timers.h>
 
 #include "RenderArea.h"
-#include "RenderEngine/Surface.h"
-
-#include <memory>
 
 struct ANativeWindow;
 
 namespace android {
 
-struct DisplayInfo;
 class DisplaySurface;
 class Fence;
+class HWComposer;
 class IGraphicBufferProducer;
 class Layer;
 class SurfaceFlinger;
-class HWComposer;
+
+struct CompositionInfo;
+struct DisplayDeviceCreationArgs;
+struct DisplayInfo;
 
 class DisplayDevice : public LightRefBase<DisplayDevice>
 {
@@ -76,24 +78,7 @@
         NO_LAYER_STACK = 0xFFFFFFFF,
     };
 
-    // clang-format off
-    DisplayDevice(
-            const sp<SurfaceFlinger>& flinger,
-            DisplayType type,
-            int32_t hwcId,
-            bool isSecure,
-            const wp<IBinder>& displayToken,
-            const sp<ANativeWindow>& nativeWindow,
-            const sp<DisplaySurface>& displaySurface,
-            std::unique_ptr<RE::Surface> renderSurface,
-            int displayWidth,
-            int displayHeight,
-            bool hasWideColorGamut,
-            const HdrCapabilities& hdrCapabilities,
-            const int32_t supportedPerFrameMetadata,
-            const std::unordered_map<ui::ColorMode, std::vector<ui::RenderIntent>>& hwcColorModes,
-            int initialPowerMode);
-    // clang-format on
+    explicit DisplayDevice(DisplayDeviceCreationArgs&& args);
 
     ~DisplayDevice();
 
@@ -111,6 +96,7 @@
 
     int         getWidth() const;
     int         getHeight() const;
+    int         getInstallOrientation() const { return mDisplayInstallOrientation; }
 
     void                    setVisibleLayersSortedByZ(const Vector< sp<Layer> >& layers);
     const Vector< sp<Layer> >& getVisibleLayersSortedByZ() const;
@@ -125,7 +111,7 @@
     int                     getOrientation() const { return mOrientation; }
     uint32_t                getOrientationTransform() const;
     static uint32_t         getPrimaryDisplayOrientationTransform();
-    const Transform&        getTransform() const { return mGlobalTransform; }
+    const ui::Transform&   getTransform() const { return mGlobalTransform; }
     const Rect              getViewport() const { return mViewport; }
     const Rect              getFrame() const { return mFrame; }
     const Rect&             getScissor() const { return mScissor; }
@@ -134,7 +120,8 @@
     uint32_t                getLayerStack() const { return mLayerStack; }
     int32_t                 getDisplayType() const { return mType; }
     bool                    isPrimary() const { return mType == DISPLAY_PRIMARY; }
-    int32_t                 getHwcDisplayId() const { return mHwcDisplayId; }
+    bool                    isVirtual() const { return mType == DISPLAY_VIRTUAL; }
+    int32_t                 getId() const { return mId; }
     const wp<IBinder>&      getDisplayToken() const { return mDisplayToken; }
 
     int32_t getSupportedPerFrameMetadata() const { return mSupportedPerFrameMetadata; }
@@ -142,7 +129,7 @@
     // We pass in mustRecompose so we can keep VirtualDisplaySurface's state
     // machine happy without actually queueing a buffer if nothing has changed
     status_t beginFrame(bool mustRecompose) const;
-    status_t prepareFrame(HWComposer& hwc);
+    status_t prepareFrame(HWComposer& hwc, std::vector<CompositionInfo>& compositionInfo);
 
     bool hasWideColorGamut() const { return mHasWideColorGamut; }
     // Whether h/w composer has native support for specific HDR type.
@@ -179,8 +166,8 @@
     }
     inline Rect bounds() const { return getBounds(); }
 
-    void setDisplayName(const String8& displayName);
-    const String8& getDisplayName() const { return mDisplayName; }
+    void setDisplayName(const std::string& displayName);
+    const std::string& getDisplayName() const { return mDisplayName; }
 
     bool makeCurrent() const;
     void setViewportAndProjection() const;
@@ -192,7 +179,7 @@
      */
     int getPowerMode() const;
     void setPowerMode(int mode);
-    bool isDisplayOn() const;
+    bool isPoweredOn() const;
 
     ui::ColorMode getActiveColorMode() const;
     void setActiveColorMode(ui::ColorMode mode);
@@ -224,18 +211,19 @@
      */
     sp<SurfaceFlinger> mFlinger;
     DisplayType mType;
-    int32_t mHwcDisplayId;
+    int32_t mId;
     wp<IBinder> mDisplayToken;
 
     // ANativeWindow this display is rendering into
     sp<ANativeWindow> mNativeWindow;
     sp<DisplaySurface> mDisplaySurface;
 
-    std::unique_ptr<RE::Surface> mSurface;
+    std::unique_ptr<renderengine::Surface> mSurface;
     int             mDisplayWidth;
     int             mDisplayHeight;
+    const int       mDisplayInstallOrientation;
     mutable uint32_t mPageFlipCount;
-    String8         mDisplayName;
+    std::string     mDisplayName;
     bool            mIsSecure;
 
     /*
@@ -252,7 +240,7 @@
      * Transaction state
      */
     static status_t orientationToTransfrom(int orientation,
-            int w, int h, Transform* tr);
+                                           int w, int h, ui::Transform* tr);
 
     // The identifier of the active layer stack for this display. Several displays
     // can use the same layer stack: A z-ordered group of layers (sometimes called
@@ -267,7 +255,7 @@
     Rect mFrame;
     // pre-computed scissor to apply to the display
     Rect mScissor;
-    Transform mGlobalTransform;
+    ui::Transform mGlobalTransform;
     bool mNeedsFiltering;
     // Current power mode
     int mPowerMode;
@@ -313,15 +301,9 @@
 };
 
 struct DisplayDeviceState {
-    DisplayDeviceState() = default;
-    DisplayDeviceState(DisplayDevice::DisplayType type, bool isSecure);
+    bool isVirtual() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; }
 
-    bool isValid() const { return type >= 0; }
-    bool isMainDisplay() const { return type == DisplayDevice::DISPLAY_PRIMARY; }
-    bool isVirtualDisplay() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; }
-
-    static std::atomic<int32_t> nextDisplayId;
-    int32_t displayId = nextDisplayId++;
+    int32_t sequenceId = sNextSequenceId++;
     DisplayDevice::DisplayType type = DisplayDevice::DISPLAY_ID_INVALID;
     sp<IGraphicBufferProducer> surface;
     uint32_t layerStack = DisplayDevice::NO_LAYER_STACK;
@@ -330,30 +312,143 @@
     uint8_t orientation = 0;
     uint32_t width = 0;
     uint32_t height = 0;
-    String8 displayName;
+    std::string displayName;
     bool isSecure = false;
+
+private:
+    static std::atomic<int32_t> sNextSequenceId;
+};
+
+struct DisplayDeviceCreationArgs {
+    // We use a constructor to ensure some of the values are set, without
+    // assuming a default value.
+    DisplayDeviceCreationArgs(const sp<SurfaceFlinger>& flinger, const wp<IBinder>& displayToken,
+                              DisplayDevice::DisplayType type, int32_t id);
+
+    const sp<SurfaceFlinger> flinger;
+    const wp<IBinder> displayToken;
+    const DisplayDevice::DisplayType type;
+    const int32_t id;
+
+    bool isSecure{false};
+    sp<ANativeWindow> nativeWindow;
+    sp<DisplaySurface> displaySurface;
+    std::unique_ptr<renderengine::Surface> renderSurface;
+    int displayWidth{0};
+    int displayHeight{0};
+    int displayInstallOrientation{DisplayState::eOrientationDefault};
+    bool hasWideColorGamut{false};
+    HdrCapabilities hdrCapabilities;
+    int32_t supportedPerFrameMetadata{0};
+    std::unordered_map<ui::ColorMode, std::vector<ui::RenderIntent>> hwcColorModes;
+    int initialPowerMode{HWC_POWER_MODE_NORMAL};
 };
 
 class DisplayRenderArea : public RenderArea {
 public:
     DisplayRenderArea(const sp<const DisplayDevice> device,
-                      ISurfaceComposer::Rotation rotation = ISurfaceComposer::eRotateNone)
-          : DisplayRenderArea(device, device->getBounds(), device->getHeight(), device->getWidth(),
+                      ui::Transform::orientation_flags rotation = ui::Transform::ROT_0)
+          : DisplayRenderArea(device, device->getBounds(), device->getWidth(), device->getHeight(),
                               rotation) {}
-    DisplayRenderArea(const sp<const DisplayDevice> device, Rect sourceCrop, uint32_t reqHeight,
-                      uint32_t reqWidth, ISurfaceComposer::Rotation rotation)
-          : RenderArea(reqHeight, reqWidth, CaptureFill::OPAQUE, rotation), mDevice(device),
-                              mSourceCrop(sourceCrop) {}
+    DisplayRenderArea(const sp<const DisplayDevice> device, Rect sourceCrop, uint32_t reqWidth,
+                      uint32_t reqHeight, ui::Transform::orientation_flags rotation)
+          : RenderArea(reqWidth, reqHeight, CaptureFill::OPAQUE,
+                       getDisplayRotation(rotation, device->getInstallOrientation())),
+            mDevice(device),
+            mSourceCrop(sourceCrop) {}
 
-    const Transform& getTransform() const override { return mDevice->getTransform(); }
+    const ui::Transform& getTransform() const override { return mDevice->getTransform(); }
     Rect getBounds() const override { return mDevice->getBounds(); }
     int getHeight() const override { return mDevice->getHeight(); }
     int getWidth() const override { return mDevice->getWidth(); }
     bool isSecure() const override { return mDevice->isSecure(); }
-    bool needsFiltering() const override { return mDevice->needsFiltering(); }
-    Rect getSourceCrop() const override { return mSourceCrop; }
+
+    bool needsFiltering() const override {
+        // check if the projection from the logical display to the physical
+        // display needs filtering
+        if (mDevice->needsFiltering()) {
+            return true;
+        }
+
+        // check if the projection from the logical render area (i.e., the
+        // physical display) to the physical render area requires filtering
+        const Rect sourceCrop = getSourceCrop();
+        int width = sourceCrop.width();
+        int height = sourceCrop.height();
+        if (getRotationFlags() & ui::Transform::ROT_90) {
+            std::swap(width, height);
+        }
+        return width != getReqWidth() || height != getReqHeight();
+    }
+
+    Rect getSourceCrop() const override {
+        // use the (projected) logical display viewport by default
+        if (mSourceCrop.isEmpty()) {
+            return mDevice->getScissor();
+        }
+
+        const int orientation = mDevice->getInstallOrientation();
+        if (orientation == DisplayState::eOrientationDefault) {
+            return mSourceCrop;
+        }
+
+        // Install orientation is transparent to the callers.  Apply it now.
+        uint32_t flags = 0x00;
+        switch (orientation) {
+            case DisplayState::eOrientation90:
+                flags = ui::Transform::ROT_90;
+                break;
+            case DisplayState::eOrientation180:
+                flags = ui::Transform::ROT_180;
+                break;
+            case DisplayState::eOrientation270:
+                flags = ui::Transform::ROT_270;
+                break;
+        }
+        ui::Transform tr;
+        tr.set(flags, getWidth(), getHeight());
+        return tr.transform(mSourceCrop);
+    }
 
 private:
+    // Install orientation is transparent to the callers.  We need to cancel
+    // it out by modifying rotation flags.
+    static ui::Transform::orientation_flags getDisplayRotation(
+            ui::Transform::orientation_flags rotation, int orientation) {
+        if (orientation == DisplayState::eOrientationDefault) {
+            return rotation;
+        }
+
+        // convert hw orientation into flag presentation
+        // here inverse transform needed
+        uint8_t hw_rot_90 = 0x00;
+        uint8_t hw_flip_hv = 0x00;
+        switch (orientation) {
+            case DisplayState::eOrientation90:
+                hw_rot_90 = ui::Transform::ROT_90;
+                hw_flip_hv = ui::Transform::ROT_180;
+                break;
+            case DisplayState::eOrientation180:
+                hw_flip_hv = ui::Transform::ROT_180;
+                break;
+            case DisplayState::eOrientation270:
+                hw_rot_90 = ui::Transform::ROT_90;
+                break;
+        }
+
+        // transform flags operation
+        // 1) flip H V if both have ROT_90 flag
+        // 2) XOR these flags
+        uint8_t rotation_rot_90 = rotation & ui::Transform::ROT_90;
+        uint8_t rotation_flip_hv = rotation & ui::Transform::ROT_180;
+        if (rotation_rot_90 & hw_rot_90) {
+            rotation_flip_hv = (~rotation_flip_hv) & ui::Transform::ROT_180;
+        }
+
+        return static_cast<ui::Transform::orientation_flags>(
+                (rotation_rot_90 ^ hw_rot_90) | (rotation_flip_hv ^ hw_flip_hv));
+    }
+
     const sp<const DisplayDevice> mDevice;
     const Rect mSourceCrop;
 };
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index 37ba433..163b26c 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -22,7 +22,6 @@
 
 #include "ComposerHal.h"
 
-#include <android/hardware/graphics/composer/2.2/IComposer.h>
 #include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
 #include <gui/BufferQueue.h>
 #include <hidl/HidlTransportUtils.h>
@@ -172,22 +171,31 @@
         LOG_ALWAYS_FATAL("failed to get hwcomposer service");
     }
 
-    mComposer->createClient(
-            [&](const auto& tmpError, const auto& tmpClient)
-            {
-                if (tmpError == Error::NONE) {
-                    mClient = tmpClient;
-                }
-            });
-    if (mClient == nullptr) {
-        LOG_ALWAYS_FATAL("failed to create composer client");
+    if (sp<IComposer> composer_2_3 = IComposer::castFrom(mComposer)) {
+        composer_2_3->createClient_2_3([&](const auto& tmpError, const auto& tmpClient) {
+            if (tmpError == Error::NONE) {
+                mClient = tmpClient;
+                mClient_2_2 = tmpClient;
+                mClient_2_3 = tmpClient;
+            }
+        });
+    } else {
+        mComposer->createClient([&](const auto& tmpError, const auto& tmpClient) {
+            if (tmpError != Error::NONE) {
+                return;
+            }
+
+            mClient = tmpClient;
+            if (sp<V2_2::IComposer> composer_2_2 = V2_2::IComposer::castFrom(mComposer)) {
+                mClient_2_2 = V2_2::IComposerClient::castFrom(mClient);
+                LOG_ALWAYS_FATAL_IF(mClient_2_2 == nullptr,
+                                    "IComposer 2.2 did not return IComposerClient 2.2");
+            }
+        });
     }
 
-    // 2.2 support is optional
-    sp<IComposer> composer_2_2 = IComposer::castFrom(mComposer);
-    if (composer_2_2 != nullptr) {
-        mClient_2_2 = IComposerClient::castFrom(mClient);
-        LOG_ALWAYS_FATAL_IF(mClient_2_2 == nullptr, "IComposer 2.2 did not return IComposerClient 2.2");
+    if (mClient == nullptr) {
+        LOG_ALWAYS_FATAL("failed to create composer client");
     }
 
     if (mIsUsingVrComposer) {
@@ -897,23 +905,25 @@
     return Error::NONE;
 }
 
-Error Composer::getPerFrameMetadataKeys(
-        Display display, std::vector<IComposerClient::PerFrameMetadataKey>* outKeys) {
+std::vector<IComposerClient::PerFrameMetadataKey> Composer::getPerFrameMetadataKeys(
+        Display display) {
+    std::vector<IComposerClient::PerFrameMetadataKey>  keys;
     if (!mClient_2_2) {
-        return Error::UNSUPPORTED;
+        return keys;
     }
 
     Error error = kDefaultError;
     mClient_2_2->getPerFrameMetadataKeys(display, [&](const auto& tmpError, const auto& tmpKeys) {
         error = tmpError;
         if (error != Error::NONE) {
+            ALOGW("getPerFrameMetadataKeys failed with %d", tmpError);
             return;
         }
 
-        *outKeys = tmpKeys;
+        keys = tmpKeys;
     });
 
-    return error;
+    return keys;
 }
 
 Error Composer::getRenderIntents(Display display, ColorMode colorMode,
@@ -957,6 +967,42 @@
     return error;
 }
 
+// Composer HAL 2.3
+
+Error Composer::getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                             std::vector<uint8_t>* outData) {
+    if (!mClient_2_3) {
+        return Error::UNSUPPORTED;
+    }
+
+    Error error = kDefaultError;
+    mClient_2_3->getDisplayIdentificationData(display,
+                                              [&](const auto& tmpError, const auto& tmpPort,
+                                                  const auto& tmpData) {
+                                                  error = tmpError;
+                                                  if (error != Error::NONE) {
+                                                      return;
+                                                  }
+
+                                                  *outPort = tmpPort;
+                                                  *outData = tmpData;
+                                              });
+
+    return error;
+}
+
+Error Composer::setLayerColorTransform(Display display, Layer layer, const float* matrix)
+{
+    if (!mClient_2_3) {
+        return Error::UNSUPPORTED;
+    }
+
+    mWriter.selectDisplay(display);
+    mWriter.selectLayer(layer);
+    mWriter.setLayerColorTransform(matrix);
+    return Error::NONE;
+}
+
 CommandReader::~CommandReader()
 {
     resetData();
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index beee539..94be6e9 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -25,9 +25,9 @@
 
 #include <android/frameworks/vr/composer/1.0/IVrComposerClient.h>
 #include <android/hardware/graphics/common/1.1/types.h>
-#include <android/hardware/graphics/composer/2.2/IComposer.h>
-#include <android/hardware/graphics/composer/2.2/IComposerClient.h>
-#include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
+#include <android/hardware/graphics/composer/2.3/IComposer.h>
+#include <android/hardware/graphics/composer/2.3/IComposerClient.h>
+#include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
 #include <gui/HdrMetadata.h>
 #include <math/mat4.h>
 #include <ui/GraphicBuffer.h>
@@ -43,6 +43,7 @@
 
 namespace V2_1 = hardware::graphics::composer::V2_1;
 namespace V2_2 = hardware::graphics::composer::V2_2;
+namespace V2_3 = hardware::graphics::composer::V2_3;
 
 using types::V1_0::ColorTransform;
 using types::V1_0::Hdr;
@@ -59,10 +60,11 @@
 using V2_1::IComposerCallback;
 using V2_1::Layer;
 
-using V2_2::CommandReaderBase;
-using V2_2::CommandWriterBase;
-using V2_2::IComposer;
-using V2_2::IComposerClient;
+using V2_3::CommandReaderBase;
+using V2_3::CommandWriterBase;
+
+using V2_3::IComposer;
+using V2_3::IComposerClient;
 
 using PerFrameMetadata = IComposerClient::PerFrameMetadata;
 using PerFrameMetadataKey = IComposerClient::PerFrameMetadataKey;
@@ -180,11 +182,17 @@
     virtual Error setLayerPerFrameMetadata(
             Display display, Layer layer,
             const std::vector<IComposerClient::PerFrameMetadata>& perFrameMetadatas) = 0;
-    virtual Error getPerFrameMetadataKeys(
-            Display display, std::vector<IComposerClient::PerFrameMetadataKey>* outKeys) = 0;
+    virtual std::vector<IComposerClient::PerFrameMetadataKey> getPerFrameMetadataKeys(
+            Display display) = 0;
     virtual Error getRenderIntents(Display display, ColorMode colorMode,
             std::vector<RenderIntent>* outRenderIntents) = 0;
     virtual Error getDataspaceSaturationMatrix(Dataspace dataspace, mat4* outMatrix) = 0;
+
+    // Composer HAL 2.3
+    virtual Error getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                               std::vector<uint8_t>* outData) = 0;
+    virtual Error setLayerColorTransform(Display display, Layer layer,
+                                         const float* matrix) = 0;
 };
 
 namespace impl {
@@ -374,12 +382,17 @@
     Error setLayerPerFrameMetadata(
             Display display, Layer layer,
             const std::vector<IComposerClient::PerFrameMetadata>& perFrameMetadatas) override;
-    Error getPerFrameMetadataKeys(
-            Display display, std::vector<IComposerClient::PerFrameMetadataKey>* outKeys) override;
+    std::vector<IComposerClient::PerFrameMetadataKey> getPerFrameMetadataKeys(
+            Display display) override;
     Error getRenderIntents(Display display, ColorMode colorMode,
             std::vector<RenderIntent>* outRenderIntents) override;
     Error getDataspaceSaturationMatrix(Dataspace dataspace, mat4* outMatrix) override;
 
+    // Composer HAL 2.3
+    Error getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                       std::vector<uint8_t>* outData) override;
+    Error setLayerColorTransform(Display display, Layer layer, const float* matrix) override;
+
 private:
     class CommandWriter : public CommandWriterBase {
     public:
@@ -405,7 +418,8 @@
     sp<V2_1::IComposer> mComposer;
 
     sp<V2_1::IComposerClient> mClient;
-    sp<IComposerClient> mClient_2_2;
+    sp<V2_2::IComposerClient> mClient_2_2;
+    sp<IComposerClient> mClient_2_3;
 
     // 64KiB minus a small space for metadata such as read/write pointers
     static constexpr size_t kWriterInitialSize =
diff --git a/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp b/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp
new file mode 100644
index 0000000..dcc4138
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "DisplayIdentification"
+
+#include <algorithm>
+#include <cctype>
+#include <numeric>
+#include <optional>
+
+#include <log/log.h>
+
+#include "DisplayIdentification.h"
+
+namespace android {
+namespace {
+
+using byte_view = std::basic_string_view<uint8_t>;
+
+constexpr size_t kEdidHeaderLength = 5;
+
+std::optional<uint8_t> getEdidDescriptorType(const byte_view& view) {
+    if (view.size() < kEdidHeaderLength || view[0] || view[1] || view[2] || view[4]) {
+        return {};
+    }
+
+    return view[3];
+}
+
+std::string_view parseEdidText(const byte_view& view) {
+    std::string_view text(reinterpret_cast<const char*>(view.data()), view.size());
+    text = text.substr(0, text.find('\n'));
+
+    if (!std::all_of(text.begin(), text.end(), ::isprint)) {
+        ALOGW("Invalid EDID: ASCII text is not printable.");
+        return {};
+    }
+
+    return text;
+}
+
+// Big-endian 16-bit value encodes three 5-bit letters where A is 0b00001.
+template <size_t I>
+char getPnpLetter(uint16_t id) {
+    static_assert(I < 3);
+    const char letter = 'A' + (static_cast<uint8_t>(id >> ((2 - I) * 5)) & 0b00011111) - 1;
+    return letter < 'A' || letter > 'Z' ? '\0' : letter;
+}
+
+DisplayId getEdidDisplayId(uint8_t port, uint16_t manufacturerId, uint32_t displayNameHash) {
+    return (static_cast<DisplayId>(manufacturerId) << 40) |
+            (static_cast<DisplayId>(displayNameHash) << 8) | port;
+}
+
+} // namespace
+
+bool isEdid(const DisplayIdentificationData& data) {
+    const uint8_t kMagic[] = {0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0};
+    return data.size() >= sizeof(kMagic) &&
+            std::equal(std::begin(kMagic), std::end(kMagic), data.begin());
+}
+
+std::optional<Edid> parseEdid(const DisplayIdentificationData& edid) {
+    constexpr size_t kMinLength = 128;
+    if (edid.size() < kMinLength) {
+        ALOGW("Invalid EDID: structure is truncated.");
+        // Attempt parsing even if EDID is malformed.
+    } else {
+        ALOGW_IF(edid[126] != 0, "EDID extensions are currently unsupported.");
+        ALOGW_IF(std::accumulate(edid.begin(), edid.begin() + kMinLength, static_cast<uint8_t>(0)),
+                 "Invalid EDID: structure does not checksum.");
+    }
+
+    constexpr size_t kManufacturerOffset = 8;
+    if (edid.size() < kManufacturerOffset + sizeof(uint16_t)) {
+        ALOGE("Invalid EDID: manufacturer ID is truncated.");
+        return {};
+    }
+
+    // Plug and play ID encoded as big-endian 16-bit value.
+    const uint16_t manufacturerId =
+            (edid[kManufacturerOffset] << 8) | edid[kManufacturerOffset + 1];
+
+    const auto pnpId = getPnpId(manufacturerId);
+    if (!pnpId) {
+        ALOGE("Invalid EDID: manufacturer ID is not a valid PnP ID.");
+        return {};
+    }
+
+    constexpr size_t kDescriptorOffset = 54;
+    if (edid.size() < kDescriptorOffset) {
+        ALOGE("Invalid EDID: descriptors are missing.");
+        return {};
+    }
+
+    byte_view view(edid.data(), edid.size());
+    view.remove_prefix(kDescriptorOffset);
+
+    std::string_view displayName;
+    std::string_view serialNumber;
+    std::string_view asciiText;
+
+    constexpr size_t kDescriptorCount = 4;
+    constexpr size_t kDescriptorLength = 18;
+
+    for (size_t i = 0; i < kDescriptorCount; i++) {
+        if (view.size() < kDescriptorLength) {
+            break;
+        }
+
+        if (const auto type = getEdidDescriptorType(view)) {
+            byte_view descriptor(view.data(), kDescriptorLength);
+            descriptor.remove_prefix(kEdidHeaderLength);
+
+            switch (*type) {
+                case 0xfc:
+                    displayName = parseEdidText(descriptor);
+                    break;
+                case 0xfe:
+                    asciiText = parseEdidText(descriptor);
+                    break;
+                case 0xff:
+                    serialNumber = parseEdidText(descriptor);
+                    break;
+            }
+        }
+
+        view.remove_prefix(kDescriptorLength);
+    }
+
+    if (displayName.empty()) {
+        ALOGW("Invalid EDID: falling back to serial number due to missing display name.");
+        displayName = serialNumber;
+    }
+    if (displayName.empty()) {
+        ALOGW("Invalid EDID: falling back to ASCII text due to missing serial number.");
+        displayName = asciiText;
+    }
+    if (displayName.empty()) {
+        ALOGE("Invalid EDID: display name and fallback descriptors are missing.");
+        return {};
+    }
+
+    return Edid{manufacturerId, *pnpId, displayName};
+}
+
+std::optional<PnpId> getPnpId(uint16_t manufacturerId) {
+    const char a = getPnpLetter<0>(manufacturerId);
+    const char b = getPnpLetter<1>(manufacturerId);
+    const char c = getPnpLetter<2>(manufacturerId);
+    return a && b && c ? std::make_optional(PnpId{a, b, c}) : std::nullopt;
+}
+
+std::optional<DisplayId> generateDisplayId(uint8_t port, const DisplayIdentificationData& data) {
+    if (!isEdid(data)) {
+        ALOGE("Display identification data has unknown format.");
+        return {};
+    }
+
+    const auto edid = parseEdid(data);
+    if (!edid) {
+        return {};
+    }
+
+    // Hash display name instead of using product code or serial number, since the latter have been
+    // observed to change on some displays with multiple inputs.
+    const auto hash = static_cast<uint32_t>(std::hash<std::string_view>()(edid->displayName));
+    return getEdidDisplayId(port, edid->manufacturerId, hash);
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/DisplayIdentification.h b/services/surfaceflinger/DisplayHardware/DisplayIdentification.h
new file mode 100644
index 0000000..379f2d3
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/DisplayIdentification.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <optional>
+#include <string_view>
+#include <vector>
+
+namespace android {
+
+using DisplayId = uint64_t;
+using DisplayIdentificationData = std::vector<uint8_t>;
+
+// NUL-terminated plug and play ID.
+using PnpId = std::array<char, 4>;
+
+struct Edid {
+    uint16_t manufacturerId;
+    PnpId pnpId;
+    std::string_view displayName;
+};
+
+bool isEdid(const DisplayIdentificationData&);
+std::optional<Edid> parseEdid(const DisplayIdentificationData&);
+std::optional<PnpId> getPnpId(uint16_t manufacturerId);
+
+std::optional<DisplayId> generateDisplayId(uint8_t port, const DisplayIdentificationData&);
+
+} // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index 1a60c83..3a40648 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -124,6 +124,12 @@
     return mComposer->getMaxVirtualDisplayCount();
 }
 
+Error Device::getDisplayIdentificationData(hwc2_display_t hwcDisplayId, uint8_t* outPort,
+                                           std::vector<uint8_t>* outData) const {
+    auto intError = mComposer->getDisplayIdentificationData(hwcDisplayId, outPort, outData);
+    return static_cast<Error>(intError);
+}
+
 Error Device::createVirtualDisplay(uint32_t width, uint32_t height,
         PixelFormat* format, Display** outDisplay)
 {
@@ -178,6 +184,7 @@
 
         auto newDisplay = std::make_unique<Display>(
                 *mComposer.get(), mPowerAdvisor, mCapabilities, displayId, displayType);
+        newDisplay->setFrequencyScaleParameters(mFrequencyScaler);
         newDisplay->setConnected(true);
         mDisplays.emplace(displayId, std::move(newDisplay));
     } else if (connection == Connection::Disconnected) {
@@ -217,6 +224,14 @@
     return static_cast<Error>(mComposer->executeCommands());
 }
 
+void Device::setDisplayFrequencyScaleParameters(Device::FrequencyScaler frequencyScaler) {
+    mFrequencyScaler = frequencyScaler;
+}
+
+Device::FrequencyScaler Device::getDisplayFrequencyScaleParameters() {
+    return mFrequencyScaler;
+}
+
 // Display methods
 
 Display::Display(android::Hwc2::Composer& composer, android::Hwc2::PowerAdvisor& advisor,
@@ -256,6 +271,7 @@
     mWidth(-1),
     mHeight(-1),
     mVsyncPeriod(-1),
+    mFrequencyScaler(display.mFrequencyScaler),
     mDpiX(-1),
     mDpiY(-1) {}
 
@@ -403,21 +419,17 @@
     return static_cast<Error>(intError);
 }
 
-Error Display::getSupportedPerFrameMetadata(int32_t* outSupportedPerFrameMetadata) const
+int32_t Display::getSupportedPerFrameMetadata() const
 {
-    *outSupportedPerFrameMetadata = 0;
-    std::vector<Hwc2::PerFrameMetadataKey> tmpKeys;
-    auto intError = mComposer.getPerFrameMetadataKeys(mId, &tmpKeys);
-    auto error = static_cast<Error>(intError);
-    if (error != Error::None) {
-        return error;
-    }
+    int32_t supportedPerFrameMetadata = 0;
+
+    std::vector<Hwc2::PerFrameMetadataKey> tmpKeys = mComposer.getPerFrameMetadataKeys(mId);
+    std::set<Hwc2::PerFrameMetadataKey> keys(tmpKeys.begin(), tmpKeys.end());
 
     // Check whether a specific metadata type is supported. A metadata type is considered
     // supported if and only if all required fields are supported.
 
     // SMPTE2086
-    std::set<Hwc2::PerFrameMetadataKey> keys(tmpKeys.begin(), tmpKeys.end());
     if (hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X) &&
         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y) &&
         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_X) &&
@@ -428,15 +440,15 @@
         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::WHITE_POINT_Y) &&
         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MAX_LUMINANCE) &&
         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MIN_LUMINANCE)) {
-        *outSupportedPerFrameMetadata |= HdrMetadata::Type::SMPTE2086;
+        supportedPerFrameMetadata |= HdrMetadata::Type::SMPTE2086;
     }
     // CTA861_3
     if (hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MAX_CONTENT_LIGHT_LEVEL) &&
         hasMetadataKey(keys, Hwc2::PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL)) {
-        *outSupportedPerFrameMetadata |= HdrMetadata::Type::CTA861_3;
+        supportedPerFrameMetadata |= HdrMetadata::Type::CTA861_3;
     }
 
-    return Error::None;
+    return supportedPerFrameMetadata;
 }
 
 Error Display::getRenderIntents(ColorMode colorMode,
@@ -699,6 +711,10 @@
     mIsConnected = connected;
 }
 
+void Display::setFrequencyScaleParameters(Device::FrequencyScaler frequencyScaler) {
+    mFrequencyScaler = frequencyScaler;
+}
+
 int32_t Display::getAttribute(hwc2_config_t configId, Attribute attribute)
 {
     int32_t value = 0;
@@ -765,7 +781,8 @@
   : mComposer(composer),
     mCapabilities(capabilities),
     mDisplayId(displayId),
-    mId(layerId)
+    mId(layerId),
+    mColorMatrix(android::mat4())
 {
     ALOGV("Created layer %" PRIu64 " on display %" PRIu64, layerId, displayId);
 }
@@ -972,4 +989,14 @@
   return static_cast<Error>(intError);
 }
 
+// Composer HAL 2.3
+Error Layer::setColorTransform(const android::mat4& matrix) {
+    if (matrix == mColorMatrix) {
+        return Error::None;
+    }
+    mColorMatrix = matrix;
+    auto intError = mComposer.setLayerColorTransform(mDisplayId, mId, matrix.asArray());
+    return static_cast<Error>(intError);
+}
+
 } // namespace HWC2
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index e423167..363adb5 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -23,6 +23,7 @@
 #undef HWC2_INCLUDE_STRINGIFICATION
 #undef HWC2_USE_CPP11
 
+#include <cutils/properties.h>
 #include <gui/HdrMetadata.h>
 #include <math/mat4.h>
 #include <ui/GraphicTypes.h>
@@ -84,6 +85,11 @@
 public:
     explicit Device(std::unique_ptr<android::Hwc2::Composer> composer);
 
+    struct FrequencyScaler {
+        int32_t multiplier = 1;
+        int32_t divisor = 1;
+    };
+
     void registerCallback(ComposerCallback* callback, int32_t sequenceId);
 
     // Required by HWC2
@@ -95,6 +101,9 @@
     };
 
     uint32_t getMaxVirtualDisplayCount() const;
+    Error getDisplayIdentificationData(hwc2_display_t hwcDisplayId, uint8_t* outPort,
+                                       std::vector<uint8_t>* outData) const;
+
     Error createVirtualDisplay(uint32_t width, uint32_t height,
             android::ui::PixelFormat* format, Display** outDisplay);
     void destroyDisplay(hwc2_display_t displayId);
@@ -112,6 +121,9 @@
     // This method provides an explicit way to flush state changes to HWC.
     Error flushCommands();
 
+    void setDisplayFrequencyScaleParameters(FrequencyScaler frequecyScaler);
+    FrequencyScaler getDisplayFrequencyScaleParameters();
+
 private:
     // Initialization methods
 
@@ -122,6 +134,7 @@
     std::unordered_set<Capability> mCapabilities;
     std::unordered_map<hwc2_display_t, std::unique_ptr<Display>> mDisplays;
     android::Hwc2::impl::PowerAdvisor mPowerAdvisor;
+    FrequencyScaler mFrequencyScaler;
     bool mRegisteredCallback = false;
 };
 
@@ -186,7 +199,8 @@
 
         int32_t getWidth() const { return mWidth; }
         int32_t getHeight() const { return mHeight; }
-        nsecs_t getVsyncPeriod() const { return mVsyncPeriod; }
+        nsecs_t getVsyncPeriod() const {
+            return mVsyncPeriod * mFrequencyScaler.multiplier / mFrequencyScaler.divisor; }
         float getDpiX() const { return mDpiX; }
         float getDpiY() const { return mDpiY; }
 
@@ -199,6 +213,7 @@
         int32_t mWidth;
         int32_t mHeight;
         nsecs_t mVsyncPeriod;
+        Device::FrequencyScaler mFrequencyScaler;
         float mDpiX;
         float mDpiY;
     };
@@ -215,10 +230,8 @@
             std::unordered_map<Layer*, Composition>* outTypes);
     [[clang::warn_unused_result]] Error getColorModes(
             std::vector<android::ui::ColorMode>* outModes) const;
-    // outSupportedPerFrameMetadata is an opaque bitmask to the callers
-    // but contains HdrMetadata::Type::*.
-    [[clang::warn_unused_result]] Error getSupportedPerFrameMetadata(
-            int32_t* outSupportedPerFrameMetadata) const;
+    // Returns a bitmask which contains HdrMetadata::Type::*.
+    [[clang::warn_unused_result]] int32_t getSupportedPerFrameMetadata() const;
     [[clang::warn_unused_result]] Error getRenderIntents(
             android::ui::ColorMode colorMode,
             std::vector<android::ui::RenderIntent>* outRenderIntents) const;
@@ -268,6 +281,7 @@
     hwc2_display_t getId() const { return mId; }
     bool isConnected() const { return mIsConnected; }
     void setConnected(bool connected);  // For use by Device only
+    void setFrequencyScaleParameters(Device::FrequencyScaler frequencyScaler);
 
 private:
     int32_t getAttribute(hwc2_config_t configId, Attribute attribute);
@@ -292,6 +306,7 @@
     hwc2_display_t mId;
     bool mIsConnected;
     DisplayType mType;
+    Device::FrequencyScaler mFrequencyScaler;
     std::unordered_map<hwc2_layer_t, std::unique_ptr<Layer>> mLayers;
     std::unordered_map<hwc2_config_t, std::shared_ptr<const Config>> mConfigs;
 };
@@ -340,6 +355,9 @@
     [[clang::warn_unused_result]] Error setZOrder(uint32_t z);
     [[clang::warn_unused_result]] Error setInfo(uint32_t type, uint32_t appId);
 
+    // Composer HAL 2.3
+    [[clang::warn_unused_result]] Error setColorTransform(const android::mat4& matrix);
+
 private:
     // These are references to data owned by HWC2::Device, which will outlive
     // this HWC2::Layer, so these references are guaranteed to be valid for
@@ -352,6 +370,7 @@
     android::ui::Dataspace mDataSpace = android::ui::Dataspace::UNKNOWN;
     android::HdrMetadata mHdrMetadata;
     std::function<void(Layer*)> mLayerDestroyedListener;
+    android::mat4 mColorMatrix;
 };
 
 } // namespace HWC2
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index f5f7a82..6b56ca4 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -54,6 +54,9 @@
 #include "../Layer.h"           // needed only for debugging
 #include "../SurfaceFlinger.h"
 
+#define LOG_HWC_DISPLAY_ERROR(hwcDisplayId, msg) \
+    ALOGE("%s failed for HWC display %" PRIu64 ": %s", __FUNCTION__, hwcDisplayId, msg)
+
 #define LOG_DISPLAY_ERROR(displayId, msg) \
     ALOGE("%s failed for display %d: %s", __FUNCTION__, displayId, msg)
 
@@ -96,6 +99,18 @@
     mHwcDevice->registerCallback(callback, sequenceId);
 }
 
+bool HWComposer::getDisplayIdentificationData(hwc2_display_t hwcDisplayId, uint8_t* outPort,
+                                              DisplayIdentificationData* outData) const {
+    const auto error = mHwcDevice->getDisplayIdentificationData(hwcDisplayId, outPort, outData);
+    if (error != HWC2::Error::None) {
+        if (error != HWC2::Error::Unsupported) {
+            LOG_HWC_DISPLAY_ERROR(hwcDisplayId, to_string(error).c_str());
+        }
+        return false;
+    }
+    return true;
+}
+
 bool HWComposer::hasCapability(HWC2::Capability capability) const
 {
     return mHwcDevice->getCapabilities().count(capability) > 0;
@@ -131,53 +146,55 @@
     }
 }
 
-void HWComposer::onHotplug(hwc2_display_t displayId, int32_t displayType,
-                           HWC2::Connection connection) {
+std::optional<DisplayId> HWComposer::onHotplug(hwc2_display_t hwcDisplayId, int32_t displayType,
+                                               HWC2::Connection connection) {
     if (displayType >= HWC_NUM_PHYSICAL_DISPLAY_TYPES) {
         ALOGE("Invalid display type of %d", displayType);
-        return;
+        return {};
     }
 
-    ALOGV("hotplug: %" PRIu64 ", %s %s", displayId,
-            displayType == DisplayDevice::DISPLAY_PRIMARY ? "primary" : "external",
-            to_string(connection).c_str());
-    mHwcDevice->onHotplug(displayId, connection);
+    ALOGV("hotplug: %" PRIu64 ", %s %s", hwcDisplayId,
+          displayType == DisplayDevice::DISPLAY_PRIMARY ? "primary" : "external",
+          to_string(connection).c_str());
+    mHwcDevice->onHotplug(hwcDisplayId, connection);
+
+    std::optional<DisplayId> displayId;
+
+    if (connection == HWC2::Connection::Connected) {
+        uint8_t port;
+        DisplayIdentificationData data;
+        if (getDisplayIdentificationData(hwcDisplayId, &port, &data)) {
+            displayId = generateDisplayId(port, data);
+            ALOGE_IF(!displayId, "Failed to generate stable ID for display %" PRIu64, hwcDisplayId);
+        }
+    }
+
     // Disconnect is handled through HWComposer::disconnectDisplay via
     // SurfaceFlinger's onHotplugReceived callback handling
     if (connection == HWC2::Connection::Connected) {
-        mDisplayData[displayType].hwcDisplay = mHwcDevice->getDisplayById(displayId);
-        mHwcDisplaySlots[displayId] = displayType;
+        mDisplayData[displayType].hwcDisplay = mHwcDevice->getDisplayById(hwcDisplayId);
+        mHwcDisplaySlots[hwcDisplayId] = displayType;
     }
+
+    return displayId;
 }
 
-bool HWComposer::onVsync(hwc2_display_t displayId, int64_t timestamp,
-                         int32_t* outDisplay) {
-    auto display = mHwcDevice->getDisplayById(displayId);
-    if (!display) {
-        ALOGE("onVsync Failed to find display %" PRIu64, displayId);
-        return false;
-    }
-    auto displayType = HWC2::DisplayType::Invalid;
-    auto error = display->getType(&displayType);
-    if (error != HWC2::Error::None) {
-        ALOGE("onVsync: Failed to determine type of display %" PRIu64,
-                display->getId());
+bool HWComposer::onVsync(hwc2_display_t hwcDisplayId, int64_t timestamp, int32_t* outDisplayId) {
+    const auto it = mHwcDisplaySlots.find(hwcDisplayId);
+    if (it == mHwcDisplaySlots.end()) {
+        LOG_HWC_DISPLAY_ERROR(hwcDisplayId, "Invalid display");
         return false;
     }
 
-    if (displayType == HWC2::DisplayType::Virtual) {
-        ALOGE("Virtual display %" PRIu64 " passed to vsync callback",
-                display->getId());
+    const int32_t displayId = it->second;
+    RETURN_IF_INVALID_DISPLAY(displayId, false);
+
+    const auto& displayData = mDisplayData[displayId];
+    if (displayData.isVirtual) {
+        LOG_DISPLAY_ERROR(displayId, "Invalid operation on virtual display");
         return false;
     }
 
-    if (mHwcDisplaySlots.count(display->getId()) == 0) {
-        ALOGE("Unknown physical display %" PRIu64 " passed to vsync callback",
-                display->getId());
-        return false;
-    }
-
-    int32_t disp = mHwcDisplaySlots[display->getId()];
     {
         Mutex::Autolock _l(mLock);
 
@@ -185,22 +202,22 @@
         // with the same timestamp when turning the display off and on. This
         // is a bug in the HWC implementation, but filter the extra events
         // out here so they don't cause havoc downstream.
-        if (timestamp == mLastHwVSync[disp]) {
+        if (timestamp == mLastHwVSync[displayId]) {
             ALOGW("Ignoring duplicate VSYNC event from HWC (t=%" PRId64 ")",
                     timestamp);
             return false;
         }
 
-        mLastHwVSync[disp] = timestamp;
+        mLastHwVSync[displayId] = timestamp;
     }
 
-    if (outDisplay) {
-        *outDisplay = disp;
+    if (outDisplayId) {
+        *outDisplayId = displayId;
     }
 
     char tag[16];
-    snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", disp);
-    ATRACE_INT(tag, ++mVSyncCounts[disp] & 1);
+    snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", displayId);
+    ATRACE_INT(tag, ++mVSyncCounts[displayId] & 1);
 
     return true;
 }
@@ -208,16 +225,15 @@
 status_t HWComposer::allocateVirtualDisplay(uint32_t width, uint32_t height,
         ui::PixelFormat* format, int32_t *outId) {
     if (mRemainingHwcVirtualDisplays == 0) {
-        ALOGE("allocateVirtualDisplay: No remaining virtual displays");
+        ALOGE("%s: No remaining virtual displays", __FUNCTION__);
         return NO_MEMORY;
     }
 
     if (SurfaceFlinger::maxVirtualDisplaySize != 0 &&
         (width > SurfaceFlinger::maxVirtualDisplaySize ||
          height > SurfaceFlinger::maxVirtualDisplaySize)) {
-        ALOGE("createVirtualDisplay: Can't create a virtual display with"
-                      " a dimension > %" PRIu64 " (tried %u x %u)",
-              SurfaceFlinger::maxVirtualDisplaySize, width, height);
+        ALOGE("%s: Display size %ux%u exceeds maximum dimension of %" PRIu64, __FUNCTION__, width,
+              height, SurfaceFlinger::maxVirtualDisplaySize);
         return INVALID_OPERATION;
     }
 
@@ -225,7 +241,7 @@
     auto error = mHwcDevice->createVirtualDisplay(width, height, format,
             &display);
     if (error != HWC2::Error::None) {
-        ALOGE("allocateVirtualDisplay: Failed to create HWC virtual display");
+        ALOGE("%s: Failed to create HWC virtual display", __FUNCTION__);
         return NO_MEMORY;
     }
 
@@ -238,11 +254,13 @@
         displaySlot = mDisplayData.size();
         mDisplayData.resize(displaySlot + 1);
     } else {
-        ALOGE("allocateVirtualDisplay: Unable to allocate a display slot");
+        ALOGE("%s: Unable to allocate a display slot", __FUNCTION__);
         return NO_MEMORY;
     }
 
-    mDisplayData[displaySlot].hwcDisplay = display;
+    auto& displayData = mDisplayData[displaySlot];
+    displayData.hwcDisplay = display;
+    displayData.isVirtual = true;
 
     --mRemainingHwcVirtualDisplays;
     *outId = static_cast<int32_t>(displaySlot);
@@ -319,21 +337,19 @@
 }
 
 int HWComposer::getActiveConfigIndex(int32_t displayId) const {
-    if (!isValidDisplay(displayId)) {
-        ALOGV("getActiveConfigIndex: Attempted to access invalid display %d", displayId);
-        return -1;
-    }
+    RETURN_IF_INVALID_DISPLAY(displayId, -1);
+
     int index;
     auto error = mDisplayData[displayId].hwcDisplay->getActiveConfigIndex(&index);
     if (error == HWC2::Error::BadConfig) {
-        ALOGE("getActiveConfigIndex: No config active, returning -1");
+        LOG_DISPLAY_ERROR(displayId, "No active config");
         return -1;
-    } else if (error != HWC2::Error::None) {
-        ALOGE("getActiveConfigIndex failed for display %d: %s (%d)", displayId,
-              to_string(error).c_str(), static_cast<int32_t>(error));
-        return -1;
-    } else if (index < 0) {
-        ALOGE("getActiveConfigIndex returned an unknown config for display %d", displayId);
+    }
+
+    RETURN_IF_HWC_ERROR(error, displayId, -1);
+
+    if (index < 0) {
+        LOG_DISPLAY_ERROR(displayId, "Unknown config");
         return -1;
     }
 
@@ -365,19 +381,19 @@
 
 
 void HWComposer::setVsyncEnabled(int32_t displayId, HWC2::Vsync enabled) {
-    if (displayId < 0 || displayId >= HWC_DISPLAY_VIRTUAL) {
-        ALOGD("setVsyncEnabled: Ignoring for virtual display %d", displayId);
+    RETURN_IF_INVALID_DISPLAY(displayId);
+    auto& displayData = mDisplayData[displayId];
+
+    if (displayData.isVirtual) {
+        LOG_DISPLAY_ERROR(displayId, "Invalid operation on virtual display");
         return;
     }
 
-    RETURN_IF_INVALID_DISPLAY(displayId);
-
     // NOTE: we use our own internal lock here because we have to call
     // into the HWC with the lock held, and we want to make sure
     // that even if HWC blocks (which it shouldn't), it won't
     // affect other threads.
     Mutex::Autolock _l(mVsyncLock);
-    auto& displayData = mDisplayData[displayId];
     if (enabled != displayData.vsyncEnabled) {
         ATRACE_CALL();
         auto error = displayData.hwcDisplay->setVsyncEnabled(enabled);
@@ -403,11 +419,12 @@
     return NO_ERROR;
 }
 
-status_t HWComposer::prepare(DisplayDevice& displayDevice) {
+status_t HWComposer::prepare(DisplayDevice& display,
+        std::vector<CompositionInfo>& compositionData) {
     ATRACE_CALL();
 
     Mutex::Autolock _l(mDisplayLock);
-    auto displayId = displayDevice.getHwcDisplayId();
+    const auto displayId = display.getId();
     if (displayId == DisplayDevice::DISPLAY_ID_INVALID) {
         ALOGV("Skipping HWComposer prepare for non-HWC display");
         return NO_ERROR;
@@ -474,18 +491,20 @@
 
     displayData.hasClientComposition = false;
     displayData.hasDeviceComposition = false;
-    for (auto& layer : displayDevice.getVisibleLayersSortedByZ()) {
-        auto hwcLayer = layer->getHwcLayer(displayId);
+    for (auto& compositionInfo : compositionData) {
+        auto hwcLayer = compositionInfo.hwc.hwcLayer;
 
-        if (changedTypes.count(hwcLayer) != 0) {
+        if (changedTypes.count(&*hwcLayer) != 0) {
             // We pass false so we only update our state and don't call back
             // into the HWC device
-            validateChange(layer->getCompositionType(displayId),
-                    changedTypes[hwcLayer]);
-            layer->setCompositionType(displayId, changedTypes[hwcLayer], false);
+            validateChange(compositionInfo.compositionType,
+                    changedTypes[&*hwcLayer]);
+            compositionInfo.compositionType = changedTypes[&*hwcLayer];
+            compositionInfo.layer->mLayer->setCompositionType(displayId,
+                    compositionInfo.compositionType, false);
         }
 
-        switch (layer->getCompositionType(displayId)) {
+        switch (compositionInfo.compositionType) {
             case HWC2::Composition::Client:
                 displayData.hasClientComposition = true;
                 break;
@@ -499,17 +518,19 @@
                 break;
         }
 
-        if (layerRequests.count(hwcLayer) != 0 &&
-                layerRequests[hwcLayer] ==
+        if (layerRequests.count(&*hwcLayer) != 0 &&
+                layerRequests[&*hwcLayer] ==
                         HWC2::LayerRequest::ClearClientTarget) {
-            layer->setClearClientTarget(displayId, true);
+            compositionInfo.hwc.clearClientTarget = true;
+            compositionInfo.layer->mLayer->setClearClientTarget(displayId, true);
         } else {
-            if (layerRequests.count(hwcLayer) != 0) {
+            if (layerRequests.count(&*hwcLayer) != 0) {
                 LOG_DISPLAY_ERROR(displayId,
-                                  ("Unknown layer request " + to_string(layerRequests[hwcLayer]))
+                                  ("Unknown layer request " + to_string(layerRequests[&*hwcLayer]))
                                           .c_str());
             }
-            layer->setClearClientTarget(displayId, false);
+            compositionInfo.hwc.clearClientTarget = false;
+            compositionInfo.layer->mLayer->setClearClientTarget(displayId, false);
         }
     }
 
@@ -601,7 +622,8 @@
     ALOGV("setPowerMode(%d, %d)", displayId, intMode);
     RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
 
-    if (displayId >= VIRTUAL_DISPLAY_ID_BASE) {
+    const auto& displayData = mDisplayData[displayId];
+    if (displayData.isVirtual) {
         LOG_DISPLAY_ERROR(displayId, "Invalid operation on virtual display");
         return INVALID_OPERATION;
     }
@@ -611,7 +633,7 @@
         setVsyncEnabled(displayId, HWC2::Vsync::Disable);
     }
 
-    auto& hwcDisplay = mDisplayData[displayId].hwcDisplay;
+    auto& hwcDisplay = displayData.hwcDisplay;
     switch (mode) {
         case HWC2::PowerMode::Off:
         case HWC2::PowerMode::On:
@@ -680,43 +702,35 @@
     return NO_ERROR;
 }
 
-void HWComposer::disconnectDisplay(int displayId) {
-    LOG_ALWAYS_FATAL_IF(displayId < 0);
+void HWComposer::disconnectDisplay(int32_t displayId) {
+    RETURN_IF_INVALID_DISPLAY(displayId);
     auto& displayData = mDisplayData[displayId];
 
-    auto displayType = HWC2::DisplayType::Invalid;
-    auto error = displayData.hwcDisplay->getType(&displayType);
-    RETURN_IF_HWC_ERROR_FOR("getType", error, displayId);
-
     // If this was a virtual display, add its slot back for reuse by future
     // virtual displays
-    if (displayType == HWC2::DisplayType::Virtual) {
+    if (displayData.isVirtual) {
         mFreeDisplaySlots.insert(displayId);
         ++mRemainingHwcVirtualDisplays;
     }
 
-    auto hwcId = displayData.hwcDisplay->getId();
-    mHwcDisplaySlots.erase(hwcId);
-    displayData.reset();
+    const auto hwcDisplayId = displayData.hwcDisplay->getId();
+    mHwcDisplaySlots.erase(hwcDisplayId);
+    displayData = DisplayData();
 
-    mHwcDevice->destroyDisplay(hwcId);
+    mHwcDevice->destroyDisplay(hwcDisplayId);
 }
 
 status_t HWComposer::setOutputBuffer(int32_t displayId,
         const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) {
     RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
+    const auto& displayData = mDisplayData[displayId];
 
-    auto& hwcDisplay = mDisplayData[displayId].hwcDisplay;
-    auto displayType = HWC2::DisplayType::Invalid;
-    auto error = hwcDisplay->getType(&displayType);
-    RETURN_IF_HWC_ERROR_FOR("getType", error, displayId, NAME_NOT_FOUND);
-
-    if (displayType != HWC2::DisplayType::Virtual) {
+    if (!displayData.isVirtual) {
         LOG_DISPLAY_ERROR(displayId, "Invalid operation on physical display");
         return INVALID_OPERATION;
     }
 
-    error = hwcDisplay->setOutputBuffer(buffer, acquireFence);
+    auto error = displayData.hwcDisplay->setOutputBuffer(buffer, acquireFence);
     RETURN_IF_HWC_ERROR(error, displayId, UNKNOWN_ERROR);
     return NO_ERROR;
 }
@@ -738,12 +752,7 @@
 
 int32_t HWComposer::getSupportedPerFrameMetadata(int32_t displayId) const {
     RETURN_IF_INVALID_DISPLAY(displayId, 0);
-
-    int32_t supportedMetadata;
-    auto error = mDisplayData[displayId].hwcDisplay->getSupportedPerFrameMetadata(
-            &supportedMetadata);
-    RETURN_IF_HWC_ERROR(error, displayId, 0);
-    return supportedMetadata;
+    return mDisplayData[displayId].hwcDisplay->getSupportedPerFrameMetadata();
 }
 
 std::vector<ui::RenderIntent> HWComposer::getRenderIntents(int32_t displayId,
@@ -805,26 +814,15 @@
     return mDisplayData[displayId].hwcDisplay->getId();
 }
 
-// ---------------------------------------------------------------------------
-
-HWComposer::DisplayData::DisplayData()
-  : hasClientComposition(false),
-    hasDeviceComposition(false),
-    hwcDisplay(nullptr),
-    lastPresentFence(Fence::NO_FENCE),
-    outbufHandle(nullptr),
-    outbufAcquireFence(Fence::NO_FENCE),
-    vsyncEnabled(HWC2::Vsync::Disable) {
-    ALOGV("Created new DisplayData");
+void HWComposer::setDisplayFrequencyScaleParameters(
+        HWC2::Device::FrequencyScaler frequencyScaler)
+{
+    mHwcDevice->setDisplayFrequencyScaleParameters(frequencyScaler);
 }
 
-HWComposer::DisplayData::~DisplayData() {
+HWC2::Device::FrequencyScaler HWComposer::getDisplayFrequencyScaleParameters()
+{
+    return mHwcDevice->getDisplayFrequencyScaleParameters();
 }
 
-void HWComposer::DisplayData::reset() {
-    ALOGV("DisplayData reset");
-    *this = DisplayData();
-}
-
-// ---------------------------------------------------------------------------
-}; // namespace android
+} // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index f968948..cca1f3b 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -37,6 +37,8 @@
 #include <set>
 #include <vector>
 
+#include "DisplayIdentification.h"
+
 extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
                            const struct timespec *request,
                            struct timespec *remain);
@@ -59,6 +61,7 @@
 class Region;
 class String8;
 class TestableSurfaceFlinger;
+struct CompositionInfo;
 
 namespace Hwc2 {
 class Composer;
@@ -74,6 +77,9 @@
     void registerCallback(HWC2::ComposerCallback* callback,
                           int32_t sequenceId);
 
+    bool getDisplayIdentificationData(hwc2_display_t hwcDisplayId, uint8_t* outPort,
+                                      DisplayIdentificationData* outData) const;
+
     bool hasCapability(HWC2::Capability capability) const;
 
     // Attempts to allocate a virtual display. If the virtual display is created
@@ -87,7 +93,8 @@
     void destroyLayer(int32_t displayId, HWC2::Layer* layer);
 
     // Asks the HAL what it can do
-    status_t prepare(DisplayDevice& displayDevice);
+    status_t prepare(DisplayDevice& display,
+            std::vector<CompositionInfo>& compositionData);
 
     status_t setClientTarget(int32_t displayId, uint32_t slot,
             const sp<Fence>& acquireFence,
@@ -147,9 +154,9 @@
 
     // Returns true if successful, false otherwise. The
     // DisplayDevice::DisplayType of the display is returned as an output param.
-    bool onVsync(hwc2_display_t displayId, int64_t timestamp,
-                 int32_t* outDisplay);
-    void onHotplug(hwc2_display_t displayId, int32_t displayType, HWC2::Connection connection);
+    bool onVsync(hwc2_display_t hwcDisplayId, int64_t timestamp, int32_t* outDisplay);
+    std::optional<DisplayId> onHotplug(hwc2_display_t hwcDisplayId, int32_t displayType,
+                                       HWC2::Connection connection);
 
     void setVsyncEnabled(int32_t displayId, HWC2::Vsync enabled);
 
@@ -179,35 +186,38 @@
     android::Hwc2::Composer* getComposer() const { return mHwcDevice->getComposer(); }
 
     std::optional<hwc2_display_t> getHwcDisplayId(int32_t displayId) const;
+
+    // ------------------------------------------------------------------------
+    // These functions set and get the frequencyScaler.  The frequencyScaler holds
+    // a multiplier and divisor for virtually scaling the panel frequency in
+    // software.  This is used to simulate different panel frequencies when
+    // panel hardware is not available.
+    void setDisplayFrequencyScaleParameters(HWC2::Device::FrequencyScaler frequencyScaler);
+    HWC2::Device::FrequencyScaler getDisplayFrequencyScaleParameters();
 private:
     // For unit tests
     friend TestableSurfaceFlinger;
 
-    static const int32_t VIRTUAL_DISPLAY_ID_BASE = 2;
-
     bool isValidDisplay(int32_t displayId) const;
     static void validateChange(HWC2::Composition from, HWC2::Composition to);
 
     struct cb_context;
 
     struct DisplayData {
-        DisplayData();
-        ~DisplayData();
-        void reset();
-
-        bool hasClientComposition;
-        bool hasDeviceComposition;
-        HWC2::Display* hwcDisplay;
+        bool isVirtual = false;
+        bool hasClientComposition = false;
+        bool hasDeviceComposition = false;
+        HWC2::Display* hwcDisplay = nullptr;
         HWC2::DisplayRequest displayRequests;
-        sp<Fence> lastPresentFence;  // signals when the last set op retires
+        sp<Fence> lastPresentFence = Fence::NO_FENCE; // signals when the last set op retires
         std::unordered_map<HWC2::Layer*, sp<Fence>> releaseFences;
-        buffer_handle_t outbufHandle;
-        sp<Fence> outbufAcquireFence;
+        buffer_handle_t outbufHandle = nullptr;
+        sp<Fence> outbufAcquireFence = Fence::NO_FENCE;
         mutable std::unordered_map<int32_t,
                 std::shared_ptr<const HWC2::Display::Config>> configMap;
 
         // protected by mVsyncLock
-        HWC2::Vsync vsyncEnabled;
+        HWC2::Vsync vsyncEnabled = HWC2::Vsync::Disable;
 
         bool validateWasSkipped;
         HWC2::Error presentError;
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h b/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h
deleted file mode 100644
index fe7944f..0000000
--- a/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h
+++ /dev/null
@@ -1,400 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_SF_HWCOMPOSER_HWC1_H
-#define ANDROID_SF_HWCOMPOSER_HWC1_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <hardware/hwcomposer_defs.h>
-
-#include <system/graphics.h>
-
-#include <ui/Fence.h>
-
-#include <utils/BitSet.h>
-#include <utils/Condition.h>
-#include <utils/Mutex.h>
-#include <utils/StrongPointer.h>
-#include <utils/Thread.h>
-#include <utils/Timers.h>
-#include <utils/Vector.h>
-
-extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
-                           const struct timespec *request,
-                           struct timespec *remain);
-
-struct hwc_composer_device_1;
-struct hwc_display_contents_1;
-struct hwc_layer_1;
-struct hwc_procs;
-struct framebuffer_device_t;
-
-namespace android {
-// ---------------------------------------------------------------------------
-
-class Fence;
-class FloatRect;
-class GraphicBuffer;
-class NativeHandle;
-class Region;
-class String8;
-class SurfaceFlinger;
-
-class HWComposer
-{
-public:
-    class EventHandler {
-        friend class HWComposer;
-        virtual void onVSyncReceived(
-            HWComposer* composer, int32_t disp, nsecs_t timestamp) = 0;
-        virtual void onHotplugReceived(HWComposer* composer, int disp, bool connected) = 0;
-        virtual void onInvalidateReceived(HWComposer* composer) = 0;
-    protected:
-        virtual ~EventHandler() {}
-    };
-
-    enum {
-        NUM_BUILTIN_DISPLAYS = HWC_NUM_PHYSICAL_DISPLAY_TYPES,
-        MAX_HWC_DISPLAYS = HWC_NUM_DISPLAY_TYPES,
-        VIRTUAL_DISPLAY_ID_BASE = HWC_DISPLAY_VIRTUAL,
-    };
-
-    HWComposer(
-            const sp<SurfaceFlinger>& flinger,
-            EventHandler& handler);
-
-    ~HWComposer();
-
-    status_t initCheck() const;
-
-    // Returns a display ID starting at VIRTUAL_DISPLAY_ID_BASE, this ID is to
-    // be used with createWorkList (and all other methods requiring an ID
-    // below).
-    // IDs below NUM_BUILTIN_DISPLAYS are pre-defined and therefore are
-    // always valid.
-    // Returns -1 if an ID cannot be allocated
-    int32_t allocateDisplayId();
-
-    // Recycles the given virtual display ID and frees the associated worklist.
-    // IDs below NUM_BUILTIN_DISPLAYS are not recycled.
-    status_t freeDisplayId(int32_t id);
-
-
-    // Asks the HAL what it can do
-    status_t prepare();
-
-    // commits the list
-    status_t commit();
-
-    // set power mode
-    status_t setPowerMode(int disp, int mode);
-
-    // set active config
-    status_t setActiveConfig(int disp, int mode);
-
-    // reset state when an external, non-virtual display is disconnected
-    void disconnectDisplay(int disp);
-
-    // create a work list for numLayers layer. sets HWC_GEOMETRY_CHANGED.
-    status_t createWorkList(int32_t id, size_t numLayers);
-
-    bool supportsFramebufferTarget() const;
-
-    // does this display have layers handled by HWC
-    bool hasHwcComposition(int32_t id) const;
-
-    // does this display have layers handled by GLES
-    bool hasGlesComposition(int32_t id) const;
-
-    // get the releaseFence file descriptor for a display's framebuffer layer.
-    // the release fence is only valid after commit()
-    sp<Fence> getAndResetReleaseFence(int32_t id);
-
-    // needed forward declarations
-    class LayerListIterator;
-
-    // return the visual id to be used to find a suitable EGLConfig for
-    // *ALL* displays.
-    int getVisualID() const;
-
-    // Forwarding to FB HAL for pre-HWC-1.1 code (see FramebufferSurface).
-    int fbPost(int32_t id, const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf);
-    int fbCompositionComplete();
-    void fbDump(String8& result);
-
-    // Set the output buffer and acquire fence for a virtual display.
-    // Returns INVALID_OPERATION if id is not a virtual display.
-    status_t setOutputBuffer(int32_t id, const sp<Fence>& acquireFence,
-            const sp<GraphicBuffer>& buf);
-
-    // Get the retire fence for the last committed frame. This fence will
-    // signal when the h/w composer is completely finished with the frame.
-    // For physical displays, it is no longer being displayed. For virtual
-    // displays, writes to the output buffer are complete.
-    sp<Fence> getLastRetireFence(int32_t id) const;
-
-    status_t setCursorPositionAsync(int32_t id, const Rect &pos);
-
-    /*
-     * Interface to hardware composer's layers functionality.
-     * This abstracts the HAL interface to layers which can evolve in
-     * incompatible ways from one release to another.
-     * The idea is that we could extend this interface as we add
-     * features to h/w composer.
-     */
-    class HWCLayerInterface {
-    protected:
-        virtual ~HWCLayerInterface() { }
-    public:
-        virtual int32_t getCompositionType() const = 0;
-        virtual uint32_t getHints() const = 0;
-        virtual sp<Fence> getAndResetReleaseFence() = 0;
-        virtual void setDefaultState() = 0;
-        virtual void setSkip(bool skip) = 0;
-        virtual void setIsCursorLayerHint(bool isCursor = true) = 0;
-        virtual void setBlending(uint32_t blending) = 0;
-        virtual void setTransform(uint32_t transform) = 0;
-        virtual void setFrame(const Rect& frame) = 0;
-        virtual void setCrop(const FloatRect& crop) = 0;
-        virtual void setVisibleRegionScreen(const Region& reg) = 0;
-        virtual void setSurfaceDamage(const Region& reg) = 0;
-        virtual void setSidebandStream(const sp<NativeHandle>& stream) = 0;
-        virtual void setBuffer(const sp<GraphicBuffer>& buffer) = 0;
-        virtual void setAcquireFenceFd(int fenceFd) = 0;
-        virtual void setPlaneAlpha(uint8_t alpha) = 0;
-        virtual void onDisplayed() = 0;
-    };
-
-    /*
-     * Interface used to implement an iterator to a list
-     * of HWCLayer.
-     */
-    class HWCLayer : public HWCLayerInterface {
-        friend class LayerListIterator;
-        // select the layer at the given index
-        virtual status_t setLayer(size_t index) = 0;
-        virtual HWCLayer* dup() = 0;
-        static HWCLayer* copy(HWCLayer *rhs) {
-            return rhs ? rhs->dup() : nullptr;
-        }
-    protected:
-        virtual ~HWCLayer() { }
-    };
-
-    /*
-     * Iterator through a HWCLayer list.
-     * This behaves more or less like a forward iterator.
-     */
-    class LayerListIterator {
-        friend class HWComposer;
-        HWCLayer* const mLayerList;
-        size_t mIndex;
-
-        LayerListIterator() : mLayerList(nullptr), mIndex(0) { }
-
-        LayerListIterator(HWCLayer* layer, size_t index)
-            : mLayerList(layer), mIndex(index) { }
-
-        // we don't allow assignment, because we don't need it for now
-        LayerListIterator& operator = (const LayerListIterator& rhs);
-
-    public:
-        // copy operators
-        LayerListIterator(const LayerListIterator& rhs)
-            : mLayerList(HWCLayer::copy(rhs.mLayerList)), mIndex(rhs.mIndex) {
-        }
-
-        ~LayerListIterator() { delete mLayerList; }
-
-        // pre-increment
-        LayerListIterator& operator++() {
-            mLayerList->setLayer(++mIndex);
-            return *this;
-        }
-
-        // dereference
-        HWCLayerInterface& operator * () { return *mLayerList; }
-        HWCLayerInterface* operator -> () { return mLayerList; }
-
-        // comparison
-        bool operator == (const LayerListIterator& rhs) const {
-            return mIndex == rhs.mIndex;
-        }
-        bool operator != (const LayerListIterator& rhs) const {
-            return !operator==(rhs);
-        }
-    };
-
-    // Returns an iterator to the beginning of the layer list
-    LayerListIterator begin(int32_t id);
-
-    // Returns an iterator to the end of the layer list
-    LayerListIterator end(int32_t id);
-
-
-    // Events handling ---------------------------------------------------------
-
-    enum {
-        EVENT_VSYNC = HWC_EVENT_VSYNC
-    };
-
-    void eventControl(int disp, int event, int enabled);
-
-    struct DisplayConfig {
-        uint32_t width;
-        uint32_t height;
-        float xdpi;
-        float ydpi;
-        nsecs_t refresh;
-        android_color_mode_t colorMode;
-        bool operator==(const DisplayConfig& rhs) const {
-            return width == rhs.width &&
-                    height == rhs.height &&
-                    xdpi == rhs.xdpi &&
-                    ydpi == rhs.ydpi &&
-                    refresh == rhs.refresh &&
-                    colorMode == rhs.colorMode;
-        }
-    };
-
-    // Query display parameters.  Pass in a display index (e.g.
-    // HWC_DISPLAY_PRIMARY).
-    nsecs_t getRefreshTimestamp(int disp) const;
-    sp<Fence> getDisplayFence(int disp) const;
-    uint32_t getFormat(int disp) const;
-    bool isConnected(int disp) const;
-
-    // These return the values for the current config of a given display index.
-    // To get the values for all configs, use getConfigs below.
-    uint32_t getWidth(int disp) const;
-    uint32_t getHeight(int disp) const;
-    float getDpiX(int disp) const;
-    float getDpiY(int disp) const;
-    nsecs_t getRefreshPeriod(int disp) const;
-    android_color_mode_t getColorMode(int disp) const;
-
-    const Vector<DisplayConfig>& getConfigs(int disp) const;
-    size_t getCurrentConfig(int disp) const;
-
-    status_t setVirtualDisplayProperties(int32_t id, uint32_t w, uint32_t h,
-            uint32_t format);
-
-    // this class is only used to fake the VSync event on systems that don't
-    // have it.
-    class VSyncThread : public Thread {
-        HWComposer& mHwc;
-        mutable Mutex mLock;
-        Condition mCondition;
-        bool mEnabled;
-        mutable nsecs_t mNextFakeVSync;
-        nsecs_t mRefreshPeriod;
-        virtual void onFirstRef();
-        virtual bool threadLoop();
-    public:
-        VSyncThread(HWComposer& hwc);
-        void setEnabled(bool enabled);
-    };
-
-    friend class VSyncThread;
-
-    // for debugging ----------------------------------------------------------
-    void dump(String8& out) const;
-
-private:
-    void loadHwcModule();
-    int loadFbHalModule();
-
-    LayerListIterator getLayerIterator(int32_t id, size_t index);
-
-    struct cb_context;
-
-    static void hook_invalidate(const struct hwc_procs* procs);
-    static void hook_vsync(const struct hwc_procs* procs, int disp,
-            int64_t timestamp);
-    static void hook_hotplug(const struct hwc_procs* procs, int disp,
-            int connected);
-
-    inline void invalidate();
-    inline void vsync(int disp, int64_t timestamp);
-    inline void hotplug(int disp, int connected);
-
-    status_t queryDisplayProperties(int disp);
-
-    status_t setFramebufferTarget(int32_t id,
-            const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf);
-
-    struct DisplayData {
-        DisplayData();
-        ~DisplayData();
-        Vector<DisplayConfig> configs;
-        size_t currentConfig;
-        uint32_t format;    // pixel format from FB hal, for pre-hwc-1.1
-        bool connected;
-        bool hasFbComp;
-        bool hasOvComp;
-        size_t capacity;
-        hwc_display_contents_1* list;
-        hwc_layer_1* framebufferTarget;
-        buffer_handle_t fbTargetHandle;
-        sp<Fence> lastRetireFence;  // signals when the last set op retires
-        sp<Fence> lastDisplayFence; // signals when the last set op takes
-                                    // effect on screen
-        buffer_handle_t outbufHandle;
-        sp<Fence> outbufAcquireFence;
-
-        // protected by mEventControlLock
-        int32_t events;
-
-        // We need to hold "copies" of these for memory management purposes. The
-        // actual hwc_layer_1_t holds pointers to the memory within. Vector<>
-        // internally doesn't copy the memory unless one of the copies is
-        // modified.
-        Vector<Region> visibleRegions;
-        Vector<Region> surfaceDamageRegions;
-    };
-
-    sp<SurfaceFlinger>              mFlinger;
-    framebuffer_device_t*           mFbDev;
-    struct hwc_composer_device_1*   mHwc;
-    // invariant: mLists[0] != nullptr iff mHwc != nullptr
-    // mLists[i>0] can be nullptr. that display is to be ignored
-    struct hwc_display_contents_1*  mLists[MAX_HWC_DISPLAYS];
-    DisplayData                     mDisplayData[MAX_HWC_DISPLAYS];
-    // protect mDisplayData from races between prepare and dump
-    mutable Mutex mDisplayLock;
-    size_t                          mNumDisplays;
-
-    cb_context*                     mCBContext;
-    EventHandler&                   mEventHandler;
-    size_t                          mVSyncCounts[HWC_NUM_PHYSICAL_DISPLAY_TYPES];
-    sp<VSyncThread>                 mVSyncThread;
-    bool                            mDebugForceFakeVSync;
-    BitSet32                        mAllocatedDisplayIDs;
-
-    // protected by mLock
-    mutable Mutex mLock;
-    mutable nsecs_t mLastHwVSync[HWC_NUM_PHYSICAL_DISPLAY_TYPES];
-
-    // thread-safe
-    mutable Mutex mEventControlLock;
-};
-
-// ---------------------------------------------------------------------------
-}; // namespace android
-
-#endif // ANDROID_SF_HWCOMPOSER_H
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index 9a2817d..c111a27 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -32,11 +32,11 @@
 // ---------------------------------------------------------------------------
 
 #define VDS_LOGE(msg, ...) ALOGE("[%s] " msg, \
-        mDisplayName.string(), ##__VA_ARGS__)
+        mDisplayName.c_str(), ##__VA_ARGS__)
 #define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] " msg, \
-        mDisplayName.string(), ##__VA_ARGS__)
+        mDisplayName.c_str(), ##__VA_ARGS__)
 #define VDS_LOGV(msg, ...) ALOGV("[%s] " msg, \
-        mDisplayName.string(), ##__VA_ARGS__)
+        mDisplayName.c_str(), ##__VA_ARGS__)
 
 static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) {
     switch (type) {
@@ -52,7 +52,7 @@
         const sp<IGraphicBufferProducer>& sink,
         const sp<IGraphicBufferProducer>& bqProducer,
         const sp<IGraphicBufferConsumer>& bqConsumer,
-        const String8& name)
+        const std::string& name)
 :   ConsumerBase(bqConsumer),
     mHwc(hwc),
     mDisplayId(dispId),
@@ -102,7 +102,7 @@
     }
     mOutputFormat = mDefaultOutputFormat;
 
-    ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string());
+    ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.c_str());
     mConsumer->setConsumerName(ConsumerBase::mName);
     mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER);
     mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight);
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
index 5c8acea..4bd4d0f 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
@@ -17,6 +17,8 @@
 #ifndef ANDROID_SF_VIRTUAL_DISPLAY_SURFACE_H
 #define ANDROID_SF_VIRTUAL_DISPLAY_SURFACE_H
 
+#include <string>
+
 #include "DisplaySurface.h"
 #include "HWComposerBufferCache.h"
 
@@ -77,7 +79,7 @@
             const sp<IGraphicBufferProducer>& sink,
             const sp<IGraphicBufferProducer>& bqProducer,
             const sp<IGraphicBufferConsumer>& bqConsumer,
-            const String8& name);
+            const std::string& name);
 
     //
     // DisplaySurface interface
@@ -153,7 +155,7 @@
     //
     HWComposer& mHwc;
     const int32_t mDisplayId;
-    const String8 mDisplayName;
+    const std::string mDisplayName;
     sp<IGraphicBufferProducer> mSource[2]; // indexed by SOURCE_*
     uint32_t mDefaultOutputFormat;
 
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 90e0e9e..9be18fb 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -50,11 +50,10 @@
 #include "LayerRejecter.h"
 #include "MonitoredProducer.h"
 #include "SurfaceFlinger.h"
-#include "clz.h"
 
 #include "DisplayHardware/HWComposer.h"
 
-#include "RenderEngine/RenderEngine.h"
+#include <renderengine/RenderEngine.h>
 
 #include <mutex>
 #include "LayerProtoHelper.h"
@@ -63,92 +62,54 @@
 
 namespace android {
 
-LayerBE::LayerBE()
-      : mMesh(Mesh::TRIANGLE_FAN, 4, 2, 2) {
-}
+std::atomic<int32_t> Layer::sSequence{1};
 
-
-int32_t Layer::sSequence = 1;
-
-Layer::Layer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name, uint32_t w,
-             uint32_t h, uint32_t flags)
-      : contentDirty(false),
-        sequence(uint32_t(android_atomic_inc(&sSequence))),
-        mFlinger(flinger),
-        mPremultipliedAlpha(true),
-        mName(name),
-        mTransactionFlags(0),
-        mPendingStateMutex(),
-        mPendingStates(),
-        mQueuedFrames(0),
-        mSidebandStreamChanged(false),
-        mActiveBufferSlot(BufferQueue::INVALID_BUFFER_SLOT),
-        mCurrentTransform(0),
-        mOverrideScalingMode(-1),
-        mCurrentOpacity(true),
-        mCurrentFrameNumber(0),
-        mFrameLatencyNeeded(false),
-        mFiltering(false),
-        mNeedsFiltering(false),
-        mProtectedByApp(false),
-        mClientRef(client),
-        mPotentialCursor(false),
-        mQueueItemLock(),
-        mQueueItemCondition(),
-        mQueueItems(),
-        mLastFrameNumberReceived(0),
-        mAutoRefresh(false),
-        mFreezeGeometryUpdates(false),
-        mCurrentChildren(LayerVector::StateSet::Current),
-        mDrawingChildren(LayerVector::StateSet::Drawing) {
+Layer::Layer(const LayerCreationArgs& args)
+      : mFlinger(args.flinger),
+        mName(args.name),
+        mClientRef(args.client),
+        mBE{this, args.name.string()} {
     mCurrentCrop.makeInvalid();
 
     uint32_t layerFlags = 0;
-    if (flags & ISurfaceComposerClient::eHidden) layerFlags |= layer_state_t::eLayerHidden;
-    if (flags & ISurfaceComposerClient::eOpaque) layerFlags |= layer_state_t::eLayerOpaque;
-    if (flags & ISurfaceComposerClient::eSecure) layerFlags |= layer_state_t::eLayerSecure;
+    if (args.flags & ISurfaceComposerClient::eHidden) layerFlags |= layer_state_t::eLayerHidden;
+    if (args.flags & ISurfaceComposerClient::eOpaque) layerFlags |= layer_state_t::eLayerOpaque;
+    if (args.flags & ISurfaceComposerClient::eSecure) layerFlags |= layer_state_t::eLayerSecure;
 
-    mName = name;
     mTransactionName = String8("TX - ") + mName;
 
-    mCurrentState.active.w = w;
-    mCurrentState.active.h = h;
+    mCurrentState.active_legacy.w = args.w;
+    mCurrentState.active_legacy.h = args.h;
     mCurrentState.flags = layerFlags;
-    mCurrentState.active.transform.set(0, 0);
-    mCurrentState.crop.makeInvalid();
-    mCurrentState.finalCrop.makeInvalid();
-    mCurrentState.requestedFinalCrop = mCurrentState.finalCrop;
-    mCurrentState.requestedCrop = mCurrentState.crop;
+    mCurrentState.active_legacy.transform.set(0, 0);
+    mCurrentState.crop_legacy.makeInvalid();
+    mCurrentState.requestedCrop_legacy = mCurrentState.crop_legacy;
     mCurrentState.z = 0;
     mCurrentState.color.a = 1.0f;
     mCurrentState.layerStack = 0;
     mCurrentState.sequence = 0;
-    mCurrentState.requested = mCurrentState.active;
+    mCurrentState.requested_legacy = mCurrentState.active_legacy;
     mCurrentState.appId = 0;
     mCurrentState.type = 0;
+    mCurrentState.active.w = 0;
+    mCurrentState.active.h = 0;
+    mCurrentState.active.transform.set(0, 0);
+    mCurrentState.transform = 0;
+    mCurrentState.transformToDisplayInverse = false;
+    mCurrentState.crop.makeInvalid();
+    mCurrentState.acquireFence = new Fence(-1);
+    mCurrentState.dataspace = ui::Dataspace::UNKNOWN;
+    mCurrentState.hdrMetadata.validTypes = 0;
+    mCurrentState.surfaceDamageRegion.clear();
+    mCurrentState.api = -1;
 
     // drawing state & current state are identical
     mDrawingState = mCurrentState;
 
     CompositorTiming compositorTiming;
-    flinger->getCompositorTiming(&compositorTiming);
+    args.flinger->getCompositorTiming(&compositorTiming);
     mFrameEventHistory.initializeCompositorTiming(compositorTiming);
-}
-
-void Layer::onFirstRef() NO_THREAD_SAFETY_ANALYSIS {
-    if (!isCreatedFromMainThread()) {
-        // Grab the SF state lock during this since it's the only way to safely access HWC
-        mFlinger->mStateLock.lock();
-    }
-
-    const auto& hwc = mFlinger->getHwComposer();
-    const auto& activeConfig = hwc.getActiveConfig(HWC_DISPLAY_PRIMARY);
-    nsecs_t displayPeriod = activeConfig->getVsyncPeriod();
-    mFrameTracker.setDisplayRefreshPeriod(displayPeriod);
-
-    if (!isCreatedFromMainThread()) {
-        mFlinger->mStateLock.unlock();
-    }
+    mFrameTracker.setDisplayRefreshPeriod(compositorTiming.interval);
 }
 
 Layer::~Layer() {
@@ -157,12 +118,6 @@
         c->detachLayer(this);
     }
 
-    for (auto& point : mRemoteSyncPoints) {
-        point->setTransactionApplied();
-    }
-    for (auto& point : mLocalSyncPoints) {
-        point->setFrameAvailable();
-    }
     mFrameTracker.logAndResetStats(mName);
 }
 
@@ -180,8 +135,6 @@
 void Layer::onRemovedFromCurrentState() {
     // the layer is removed from SF mCurrentState to mLayersPendingRemoval
 
-    mPendingRemoval = true;
-
     if (mCurrentState.zOrderRelativeOf != nullptr) {
         sp<Layer> strongRelative = mCurrentState.zOrderRelativeOf.promote();
         if (strongRelative != nullptr) {
@@ -190,7 +143,7 @@
         }
         mCurrentState.zOrderRelativeOf = nullptr;
     }
-
+    
     for (const auto& child : mCurrentChildren) {
         child->onRemovedFromCurrentState();
     }
@@ -202,8 +155,13 @@
 
     destroyAllHwcLayers();
 
-    for (const auto& child : mCurrentChildren) {
-        child->onRemoved();
+    mRemoved = true;
+
+    for (auto& point : mRemoteSyncPoints) {
+        point->setTransactionApplied();
+    }
+    for (auto& point : mLocalSyncPoints) {
+        point->setFrameAvailable();
     }
 }
 
@@ -228,33 +186,33 @@
 // h/w composer set-up
 // ---------------------------------------------------------------------------
 
-bool Layer::createHwcLayer(HWComposer* hwc, int32_t hwcId) {
-    LOG_ALWAYS_FATAL_IF(getBE().mHwcLayers.count(hwcId) != 0,
-                        "Already have a layer for hwcId %d", hwcId);
-    HWC2::Layer* layer = hwc->createLayer(hwcId);
+bool Layer::createHwcLayer(HWComposer* hwc, int32_t displayId) {
+    LOG_ALWAYS_FATAL_IF(getBE().mHwcLayers.count(displayId) != 0,
+                        "Already have a layer for display %d", displayId);
+    auto layer = std::shared_ptr<HWC2::Layer>(
+            hwc->createLayer(displayId),
+            [hwc, displayId](HWC2::Layer* layer) {
+               hwc->destroyLayer(displayId, layer); });
     if (!layer) {
         return false;
     }
-    LayerBE::HWCInfo& hwcInfo = getBE().mHwcLayers[hwcId];
+    LayerBE::HWCInfo& hwcInfo = getBE().mHwcLayers[displayId];
     hwcInfo.hwc = hwc;
     hwcInfo.layer = layer;
     layer->setLayerDestroyedListener(
-            [this, hwcId](HWC2::Layer* /*layer*/) { getBE().mHwcLayers.erase(hwcId); });
+            [this, displayId](HWC2::Layer* /*layer*/) { getBE().mHwcLayers.erase(displayId); });
     return true;
 }
 
-bool Layer::destroyHwcLayer(int32_t hwcId) {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
+bool Layer::destroyHwcLayer(int32_t displayId) {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
         return false;
     }
-    auto& hwcInfo = getBE().mHwcLayers[hwcId];
+    auto& hwcInfo = getBE().mHwcLayers[displayId];
     LOG_ALWAYS_FATAL_IF(hwcInfo.layer == nullptr, "Attempt to destroy null layer");
     LOG_ALWAYS_FATAL_IF(hwcInfo.hwc == nullptr, "Missing HWComposer");
-    hwcInfo.hwc->destroyLayer(hwcId, hwcInfo.layer);
-    // The layer destroyed listener should have cleared the entry from
-    // mHwcLayers. Verify that.
-    LOG_ALWAYS_FATAL_IF(getBE().mHwcLayers.count(hwcId) != 0,
-                        "Stale layer entry in getBE().mHwcLayers");
+    hwcInfo.layer = nullptr;
+
     return true;
 }
 
@@ -304,20 +262,17 @@
 }
 
 Rect Layer::computeScreenBounds(bool reduceTransparentRegion) const {
-    const Layer::State& s(getDrawingState());
-    Rect win(s.active.w, s.active.h);
+    const State& s(getDrawingState());
+    Rect win(getActiveWidth(s), getActiveHeight(s));
 
-    if (!s.crop.isEmpty()) {
-        win.intersect(s.crop, &win);
+    Rect crop = getCrop(s);
+    if (!crop.isEmpty()) {
+        win.intersect(crop, &win);
     }
 
-    Transform t = getTransform();
+    ui::Transform t = getTransform();
     win = t.transform(win);
 
-    if (!s.finalCrop.isEmpty()) {
-        win.intersect(s.finalCrop, &win);
-    }
-
     const sp<Layer>& p = mDrawingParent.promote();
     // Now we need to calculate the parent bounds, so we can clip ourselves to those.
     // When calculating the parent bounds for purposes of clipping,
@@ -334,7 +289,7 @@
     }
 
     if (reduceTransparentRegion) {
-        auto const screenTransparentRegion = t.transform(s.activeTransparentRegion);
+        auto const screenTransparentRegion = t.transform(getActiveTransparentRegion(s));
         win = reduce(win, screenTransparentRegion);
     }
 
@@ -342,16 +297,17 @@
 }
 
 FloatRect Layer::computeBounds() const {
-    const Layer::State& s(getDrawingState());
-    return computeBounds(s.activeTransparentRegion);
+    const State& s(getDrawingState());
+    return computeBounds(getActiveTransparentRegion(s));
 }
 
 FloatRect Layer::computeBounds(const Region& activeTransparentRegion) const {
-    const Layer::State& s(getDrawingState());
-    Rect win(s.active.w, s.active.h);
+    const State& s(getDrawingState());
+    Rect win(getActiveWidth(s), getActiveHeight(s));
 
-    if (!s.crop.isEmpty()) {
-        win.intersect(s.crop, &win);
+    Rect crop = getCrop(s);
+    if (!crop.isEmpty()) {
+        win.intersect(crop, &win);
     }
 
     const auto& p = mDrawingParent.promote();
@@ -363,16 +319,11 @@
         parentBounds = p->computeBounds(Region());
     }
 
-    Transform t = s.active.transform;
+    ui::Transform t = s.active_legacy.transform;
 
-
-    if (p != nullptr || !s.finalCrop.isEmpty()) {
+    if (p != nullptr) {
         floatWin = t.transform(floatWin);
         floatWin = floatWin.intersect(parentBounds);
-
-        if (!s.finalCrop.isEmpty()) {
-            floatWin = floatWin.intersect(s.finalCrop.toFloatRect());
-        }
         floatWin = t.inverse().transform(floatWin);
     }
 
@@ -380,7 +331,7 @@
     return reduce(floatWin, activeTransparentRegion);
 }
 
-Rect Layer::computeInitialCrop(const sp<const DisplayDevice>& hw) const {
+Rect Layer::computeInitialCrop(const sp<const DisplayDevice>& display) const {
     // the crop is the area of the window that gets cropped, but not
     // scaled in any ways.
     const State& s(getDrawingState());
@@ -392,32 +343,28 @@
     // FIXME: the 3 lines below can produce slightly incorrect clipping when we have
     // a viewport clipping and a window transform. we should use floating point to fix this.
 
-    Rect activeCrop(s.active.w, s.active.h);
-    if (!s.crop.isEmpty()) {
-        activeCrop.intersect(s.crop, &activeCrop);
+    Rect activeCrop(getActiveWidth(s), getActiveHeight(s));
+    Rect crop = getCrop(s);
+    if (!crop.isEmpty()) {
+        activeCrop.intersect(crop, &activeCrop);
     }
 
-    Transform t = getTransform();
+    ui::Transform t = getTransform();
     activeCrop = t.transform(activeCrop);
-    if (!activeCrop.intersect(hw->getViewport(), &activeCrop)) {
+    if (!activeCrop.intersect(display->getViewport(), &activeCrop)) {
         activeCrop.clear();
     }
-    if (!s.finalCrop.isEmpty()) {
-        if (!activeCrop.intersect(s.finalCrop, &activeCrop)) {
-            activeCrop.clear();
-        }
-    }
 
     const auto& p = mDrawingParent.promote();
     if (p != nullptr) {
-        auto parentCrop = p->computeInitialCrop(hw);
+        auto parentCrop = p->computeInitialCrop(display);
         activeCrop.intersect(parentCrop, &activeCrop);
     }
 
     return activeCrop;
 }
 
-FloatRect Layer::computeCrop(const sp<const DisplayDevice>& hw) const {
+FloatRect Layer::computeCrop(const sp<const DisplayDevice>& display) const {
     // the content crop is the area of the content that gets scaled to the
     // layer's size. This is in buffer space.
     FloatRect crop = getContentCrop().toFloatRect();
@@ -426,8 +373,8 @@
     const State& s(getDrawingState());
 
     // Screen space to make reduction to parent crop clearer.
-    Rect activeCrop = computeInitialCrop(hw);
-    Transform t = getTransform();
+    Rect activeCrop = computeInitialCrop(display);
+    ui::Transform t = getTransform();
     // Back to layer space to work with the content crop.
     activeCrop = t.inverse().transform(activeCrop);
 
@@ -437,12 +384,12 @@
     // transform.inverse().transform(transform.transform(Rect)) != Rect
     // in which case we need to make sure the final rect is clipped to the
     // display bounds.
-    if (!activeCrop.intersect(Rect(s.active.w, s.active.h), &activeCrop)) {
+    if (!activeCrop.intersect(Rect(getActiveWidth(s), getActiveHeight(s)), &activeCrop)) {
         activeCrop.clear();
     }
 
     // subtract the transparent region and snap to the bounds
-    activeCrop = reduce(activeCrop, s.activeTransparentRegion);
+    activeCrop = reduce(activeCrop, getActiveTransparentRegion(s));
 
     // Transform the window crop to match the buffer coordinate system,
     // which means using the inverse of the current transform set on the
@@ -459,11 +406,12 @@
             invTransformOrient ^= NATIVE_WINDOW_TRANSFORM_FLIP_V | NATIVE_WINDOW_TRANSFORM_FLIP_H;
         }
         // and apply to the current transform
-        invTransform = (Transform(invTransformOrient) * Transform(invTransform)).getOrientation();
+        invTransform = (ui::Transform(invTransformOrient) *
+                        ui::Transform(invTransform)).getOrientation();
     }
 
-    int winWidth = s.active.w;
-    int winHeight = s.active.h;
+    int winWidth = getActiveWidth(s);
+    int winHeight = getActiveHeight(s);
     if (invTransform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
         // If the activeCrop has been rotate the ends are rotated but not
         // the space itself so when transforming ends back we can't rely on
@@ -475,10 +423,10 @@
         if (is_h_flipped == is_v_flipped) {
             invTransform ^= NATIVE_WINDOW_TRANSFORM_FLIP_V | NATIVE_WINDOW_TRANSFORM_FLIP_H;
         }
-        winWidth = s.active.h;
-        winHeight = s.active.w;
+        winWidth = getActiveHeight(s);
+        winHeight = getActiveWidth(s);
     }
-    const Rect winCrop = activeCrop.transform(invTransform, s.active.w, s.active.h);
+    const Rect winCrop = activeCrop.transform(invTransform, getActiveWidth(s), getActiveHeight(s));
 
     // below, crop is intersected with winCrop expressed in crop's coordinate space
     float xScale = crop.getWidth() / float(winWidth);
@@ -497,23 +445,34 @@
     return crop;
 }
 
-void Layer::setGeometry(const sp<const DisplayDevice>& displayDevice, uint32_t z)
-{
-    const auto hwcId = displayDevice->getHwcDisplayId();
-    if (!hasHwcLayer(hwcId)) {
+void Layer::setGeometry(const sp<const DisplayDevice>& display, uint32_t z) {
+    const auto displayId = display->getId();
+    if (!hasHwcLayer(displayId)) {
+        ALOGE("[%s] failed to setGeometry: no HWC layer found (%d)",
+              mName.string(), displayId);
         return;
     }
-    auto& hwcInfo = getBE().mHwcLayers[hwcId];
+    auto& hwcInfo = getBE().mHwcLayers[displayId];
+
+    // Device or Cursor layers
+    if (mPotentialCursor) {
+        ALOGV("[%s] Requesting Cursor composition", mName.string());
+        setCompositionType(displayId, HWC2::Composition::Cursor);
+    } else {
+        ALOGV("[%s] Requesting Device composition", mName.string());
+        setCompositionType(displayId, HWC2::Composition::Device);
+    }
+
+    // Need to program geometry parts
+    getBE().compositionInfo.hwc.skipGeometry = false;
 
     // enable this layer
     hwcInfo.forceClientComposition = false;
 
-    if (isSecure() && !displayDevice->isSecure()) {
+    if (isSecure() && !display->isSecure()) {
         hwcInfo.forceClientComposition = true;
     }
 
-    auto& hwcLayer = hwcInfo.layer;
-
     // this gives us only the "orientation" component of the transform
     const State& s(getDrawingState());
     auto blendMode = HWC2::BlendMode::None;
@@ -521,21 +480,16 @@
         blendMode =
                 mPremultipliedAlpha ? HWC2::BlendMode::Premultiplied : HWC2::BlendMode::Coverage;
     }
-    auto error = hwcLayer->setBlendMode(blendMode);
-    ALOGE_IF(error != HWC2::Error::None,
-             "[%s] Failed to set blend mode %s:"
-             " %s (%d)",
-             mName.string(), to_string(blendMode).c_str(), to_string(error).c_str(),
-             static_cast<int32_t>(error));
+    getBE().compositionInfo.hwc.blendMode = blendMode;
 
     // apply the layer's transform, followed by the display's global transform
     // here we're guaranteed that the layer's transform preserves rects
-    Region activeTransparentRegion(s.activeTransparentRegion);
-    Transform t = getTransform();
-    if (!s.crop.isEmpty()) {
-        Rect activeCrop(s.crop);
+    Region activeTransparentRegion(getActiveTransparentRegion(s));
+    ui::Transform t = getTransform();
+    Rect activeCrop = getCrop(s);
+    if (!activeCrop.isEmpty()) {
         activeCrop = t.transform(activeCrop);
-        if (!activeCrop.intersect(displayDevice->getViewport(), &activeCrop)) {
+        if (!activeCrop.intersect(display->getViewport(), &activeCrop)) {
             activeCrop.clear();
         }
         activeCrop = t.inverse().transform(activeCrop, true);
@@ -545,60 +499,35 @@
         // transform.inverse().transform(transform.transform(Rect)) != Rect
         // in which case we need to make sure the final rect is clipped to the
         // display bounds.
-        if (!activeCrop.intersect(Rect(s.active.w, s.active.h), &activeCrop)) {
+        if (!activeCrop.intersect(Rect(getActiveWidth(s), getActiveHeight(s)), &activeCrop)) {
             activeCrop.clear();
         }
         // mark regions outside the crop as transparent
-        activeTransparentRegion.orSelf(Rect(0, 0, s.active.w, activeCrop.top));
-        activeTransparentRegion.orSelf(Rect(0, activeCrop.bottom, s.active.w, s.active.h));
+        activeTransparentRegion.orSelf(Rect(0, 0, getActiveWidth(s), activeCrop.top));
+        activeTransparentRegion.orSelf(
+                Rect(0, activeCrop.bottom, getActiveWidth(s), getActiveHeight(s)));
         activeTransparentRegion.orSelf(Rect(0, activeCrop.top, activeCrop.left, activeCrop.bottom));
         activeTransparentRegion.orSelf(
-                Rect(activeCrop.right, activeCrop.top, s.active.w, activeCrop.bottom));
+                Rect(activeCrop.right, activeCrop.top, getActiveWidth(s), activeCrop.bottom));
     }
 
     // computeBounds returns a FloatRect to provide more accuracy during the
     // transformation. We then round upon constructing 'frame'.
     Rect frame{t.transform(computeBounds(activeTransparentRegion))};
-    if (!s.finalCrop.isEmpty()) {
-        if (!frame.intersect(s.finalCrop, &frame)) {
-            frame.clear();
-        }
-    }
-    if (!frame.intersect(displayDevice->getViewport(), &frame)) {
+    if (!frame.intersect(display->getViewport(), &frame)) {
         frame.clear();
     }
-    const Transform& tr(displayDevice->getTransform());
+    const ui::Transform& tr = display->getTransform();
     Rect transformedFrame = tr.transform(frame);
-    error = hwcLayer->setDisplayFrame(transformedFrame);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set display frame [%d, %d, %d, %d]: %s (%d)", mName.string(),
-              transformedFrame.left, transformedFrame.top, transformedFrame.right,
-              transformedFrame.bottom, to_string(error).c_str(), static_cast<int32_t>(error));
-    } else {
-        hwcInfo.displayFrame = transformedFrame;
-    }
+    getBE().compositionInfo.hwc.displayFrame = transformedFrame;
 
-    FloatRect sourceCrop = computeCrop(displayDevice);
-    error = hwcLayer->setSourceCrop(sourceCrop);
-    if (error != HWC2::Error::None) {
-        ALOGE("[%s] Failed to set source crop [%.3f, %.3f, %.3f, %.3f]: "
-              "%s (%d)",
-              mName.string(), sourceCrop.left, sourceCrop.top, sourceCrop.right, sourceCrop.bottom,
-              to_string(error).c_str(), static_cast<int32_t>(error));
-    } else {
-        hwcInfo.sourceCrop = sourceCrop;
-    }
+    FloatRect sourceCrop = computeCrop(display);
+    getBE().compositionInfo.hwc.sourceCrop = sourceCrop;
 
     float alpha = static_cast<float>(getAlpha());
-    error = hwcLayer->setPlaneAlpha(alpha);
-    ALOGE_IF(error != HWC2::Error::None,
-             "[%s] Failed to set plane alpha %.3f: "
-             "%s (%d)",
-             mName.string(), alpha, to_string(error).c_str(), static_cast<int32_t>(error));
+    getBE().compositionInfo.hwc.alpha = alpha;
 
-    error = hwcLayer->setZOrder(z);
-    ALOGE_IF(error != HWC2::Error::None, "[%s] Failed to set Z %u: %s (%d)", mName.string(), z,
-             to_string(error).c_str(), static_cast<int32_t>(error));
+    getBE().compositionInfo.hwc.z = z;
 
     int type = s.type;
     int appId = s.appId;
@@ -611,9 +540,8 @@
         }
     }
 
-    error = hwcLayer->setInfo(type, appId);
-    ALOGE_IF(error != HWC2::Error::None, "[%s] Failed to set info (%d)", mName.string(),
-             static_cast<int32_t>(error));
+    getBE().compositionInfo.hwc.type = type;
+    getBE().compositionInfo.hwc.appId = appId;
 
     /*
      * Transformations are applied in this order:
@@ -623,8 +551,8 @@
      * (NOTE: the matrices are multiplied in reverse order)
      */
 
-    const Transform bufferOrientation(mCurrentTransform);
-    Transform transform(tr * t * bufferOrientation);
+    const ui::Transform bufferOrientation(mCurrentTransform);
+    ui::Transform transform(tr * t * bufferOrientation);
 
     if (getTransformToDisplayInverse()) {
         /*
@@ -643,48 +571,43 @@
          * computation so it's enough to just omit it in the composition.
          * See comment in onDraw with ref to b/36727915 for why.
          */
-        transform = Transform(invTransform) * tr * bufferOrientation;
+        transform = ui::Transform(invTransform) * tr * bufferOrientation;
     }
 
     // this gives us only the "orientation" component of the transform
     const uint32_t orientation = transform.getOrientation();
-    if (orientation & Transform::ROT_INVALID) {
+    if (orientation & ui::Transform::ROT_INVALID) {
         // we can only handle simple transformation
         hwcInfo.forceClientComposition = true;
     } else {
         auto transform = static_cast<HWC2::Transform>(orientation);
         hwcInfo.transform = transform;
-        auto error = hwcLayer->setTransform(transform);
-        ALOGE_IF(error != HWC2::Error::None,
-                 "[%s] Failed to set transform %s: "
-                 "%s (%d)",
-                 mName.string(), to_string(transform).c_str(), to_string(error).c_str(),
-                 static_cast<int32_t>(error));
+        getBE().compositionInfo.hwc.transform = transform;
     }
 }
 
-void Layer::forceClientComposition(int32_t hwcId) {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
-        ALOGE("forceClientComposition: no HWC layer found (%d)", hwcId);
+void Layer::forceClientComposition(int32_t displayId) {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
+        ALOGE("forceClientComposition: no HWC layer found (%d)", displayId);
         return;
     }
 
-    getBE().mHwcLayers[hwcId].forceClientComposition = true;
+    getBE().mHwcLayers[displayId].forceClientComposition = true;
 }
 
-bool Layer::getForceClientComposition(int32_t hwcId) {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
-        ALOGE("getForceClientComposition: no HWC layer found (%d)", hwcId);
+bool Layer::getForceClientComposition(int32_t displayId) {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
+        ALOGE("getForceClientComposition: no HWC layer found (%d)", displayId);
         return false;
     }
 
-    return getBE().mHwcLayers[hwcId].forceClientComposition;
+    return getBE().mHwcLayers[displayId].forceClientComposition;
 }
 
-void Layer::updateCursorPosition(const sp<const DisplayDevice>& displayDevice) {
-    auto hwcId = displayDevice->getHwcDisplayId();
-    if (getBE().mHwcLayers.count(hwcId) == 0 ||
-        getCompositionType(hwcId) != HWC2::Composition::Cursor) {
+void Layer::updateCursorPosition(const sp<const DisplayDevice>& display) {
+    const auto displayId = display->getId();
+    if (getBE().mHwcLayers.count(displayId) == 0 ||
+        getCompositionType(displayId) != HWC2::Composition::Cursor) {
         return;
     }
 
@@ -693,22 +616,21 @@
 
     // Apply the layer's transform, followed by the display's global transform
     // Here we're guaranteed that the layer's transform preserves rects
-    Rect win(s.active.w, s.active.h);
-    if (!s.crop.isEmpty()) {
-        win.intersect(s.crop, &win);
+    Rect win(getActiveWidth(s), getActiveHeight(s));
+    Rect crop = getCrop(s);
+    if (!crop.isEmpty()) {
+        win.intersect(crop, &win);
     }
     // Subtract the transparent region and snap to the bounds
-    Rect bounds = reduce(win, s.activeTransparentRegion);
+    Rect bounds = reduce(win, getActiveTransparentRegion(s));
     Rect frame(getTransform().transform(bounds));
-    frame.intersect(displayDevice->getViewport(), &frame);
-    if (!s.finalCrop.isEmpty()) {
-        frame.intersect(s.finalCrop, &frame);
-    }
-    auto& displayTransform(displayDevice->getTransform());
+    frame.intersect(display->getViewport(), &frame);
+    auto& displayTransform = display->getTransform();
     auto position = displayTransform.transform(frame);
 
-    auto error = getBE().mHwcLayers[hwcId].layer->setCursorPosition(position.left,
-                                                                              position.top);
+    auto error =
+            (getBE().mHwcLayers[displayId].layer)->setCursorPosition(
+                    position.left, position.top);
     ALOGE_IF(error != HWC2::Error::None,
              "[%s] Failed to set cursor position "
              "to (%d, %d): %s (%d)",
@@ -720,18 +642,14 @@
 // drawing...
 // ---------------------------------------------------------------------------
 
-void Layer::draw(const RenderArea& renderArea, const Region& clip) const {
+void Layer::draw(const RenderArea& renderArea, const Region& clip) {
     onDraw(renderArea, clip, false);
 }
 
-void Layer::draw(const RenderArea& renderArea, bool useIdentityTransform) const {
+void Layer::draw(const RenderArea& renderArea, bool useIdentityTransform) {
     onDraw(renderArea, Region(renderArea.getBounds()), useIdentityTransform);
 }
 
-void Layer::draw(const RenderArea& renderArea) const {
-    onDraw(renderArea, Region(renderArea.getBounds()), false);
-}
-
 void Layer::clearWithOpenGL(const RenderArea& renderArea, float red, float green, float blue,
                             float alpha) const {
     auto& engine(mFlinger->getRenderEngine());
@@ -744,56 +662,43 @@
     clearWithOpenGL(renderArea, 0, 0, 0, 0);
 }
 
-void Layer::setCompositionType(int32_t hwcId, HWC2::Composition type, bool callIntoHwc) {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
+void Layer::setCompositionType(int32_t displayId, HWC2::Composition type, bool /*callIntoHwc*/) {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
         ALOGE("setCompositionType called without a valid HWC layer");
         return;
-    }
-    auto& hwcInfo = getBE().mHwcLayers[hwcId];
-    auto& hwcLayer = hwcInfo.layer;
-    ALOGV("setCompositionType(%" PRIx64 ", %s, %d)", hwcLayer->getId(), to_string(type).c_str(),
-          static_cast<int>(callIntoHwc));
-    if (hwcInfo.compositionType != type) {
-        ALOGV("    actually setting");
-        hwcInfo.compositionType = type;
-        if (callIntoHwc) {
-            auto error = hwcLayer->setCompositionType(type);
-            ALOGE_IF(error != HWC2::Error::None,
-                     "[%s] Failed to set "
-                     "composition type %s: %s (%d)",
-                     mName.string(), to_string(type).c_str(), to_string(error).c_str(),
-                     static_cast<int32_t>(error));
+    } else {
+        if (getBE().mHwcLayers[displayId].compositionType != type) {
+            ALOGV("setCompositionType: Changing compositionType from %s to %s",
+                    to_string(getBE().mHwcLayers[displayId].compositionType).c_str(),
+                    to_string(type).c_str());
+            getBE().mHwcLayers[displayId].compositionType = type;
         }
     }
 }
 
-HWC2::Composition Layer::getCompositionType(int32_t hwcId) const {
-    if (hwcId == DisplayDevice::DISPLAY_ID_INVALID) {
+HWC2::Composition Layer::getCompositionType(int32_t displayId) const {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
         // If we're querying the composition type for a display that does not
         // have a HWC counterpart, then it will always be Client
         return HWC2::Composition::Client;
     }
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
-        ALOGE("getCompositionType called with an invalid HWC layer");
-        return HWC2::Composition::Invalid;
-    }
-    return getBE().mHwcLayers.at(hwcId).compositionType;
+    return getBE().mHwcLayers[displayId].compositionType;
 }
 
-void Layer::setClearClientTarget(int32_t hwcId, bool clear) {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
+void Layer::setClearClientTarget(int32_t displayId, bool clear) {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
         ALOGE("setClearClientTarget called without a valid HWC layer");
         return;
     }
-    getBE().mHwcLayers[hwcId].clearClientTarget = clear;
+    getBE().mHwcLayers[displayId].clearClientTarget = clear;
 }
 
-bool Layer::getClearClientTarget(int32_t hwcId) const {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
+bool Layer::getClearClientTarget(int32_t displayId) const {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
         ALOGE("getClearClientTarget called without a valid HWC layer");
         return false;
     }
-    return getBE().mHwcLayers.at(hwcId).clearClientTarget;
+    return getBE().mHwcLayers.at(displayId).clearClientTarget;
 }
 
 bool Layer::addSyncPoint(const std::shared_ptr<SyncPoint>& point) {
@@ -808,38 +713,14 @@
     return true;
 }
 
-void Layer::setFiltering(bool filtering) {
-    mFiltering = filtering;
-}
-
-bool Layer::getFiltering() const {
-    return mFiltering;
-}
-
 // ----------------------------------------------------------------------------
 // local state
 // ----------------------------------------------------------------------------
 
-static void boundPoint(vec2* point, const Rect& crop) {
-    if (point->x < crop.left) {
-        point->x = crop.left;
-    }
-    if (point->x > crop.right) {
-        point->x = crop.right;
-    }
-    if (point->y < crop.top) {
-        point->y = crop.top;
-    }
-    if (point->y > crop.bottom) {
-        point->y = crop.bottom;
-    }
-}
-
-void Layer::computeGeometry(const RenderArea& renderArea, Mesh& mesh,
+void Layer::computeGeometry(const RenderArea& renderArea,
+                            renderengine::Mesh& mesh,
                             bool useIdentityTransform) const {
-    const Layer::State& s(getDrawingState());
-    const Transform renderAreaTransform(renderArea.getTransform());
-    const uint32_t height = renderArea.getHeight();
+    const ui::Transform renderAreaTransform(renderArea.getTransform());
     FloatRect win = computeBounds();
 
     vec2 lt = vec2(win.left, win.top);
@@ -847,7 +728,7 @@
     vec2 rb = vec2(win.right, win.bottom);
     vec2 rt = vec2(win.right, win.top);
 
-    Transform layerTransform = getTransform();
+    ui::Transform layerTransform = getTransform();
     if (!useIdentityTransform) {
         lt = layerTransform.transform(lt);
         lb = layerTransform.transform(lb);
@@ -855,25 +736,15 @@
         rt = layerTransform.transform(rt);
     }
 
-    if (!s.finalCrop.isEmpty()) {
-        boundPoint(&lt, s.finalCrop);
-        boundPoint(&lb, s.finalCrop);
-        boundPoint(&rb, s.finalCrop);
-        boundPoint(&rt, s.finalCrop);
-    }
-
-    Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
+    renderengine::Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
     position[0] = renderAreaTransform.transform(lt);
     position[1] = renderAreaTransform.transform(lb);
     position[2] = renderAreaTransform.transform(rb);
     position[3] = renderAreaTransform.transform(rt);
-    for (size_t i = 0; i < 4; i++) {
-        position[i].y = height - position[i].y;
-    }
 }
 
 bool Layer::isSecure() const {
-    const Layer::State& s(mDrawingState);
+    const State& s(mDrawingState);
     return (s.flags & layer_state_t::eLayerSecure);
 }
 
@@ -909,22 +780,22 @@
 
     // If this transaction is waiting on the receipt of a frame, generate a sync
     // point and send it to the remote layer.
-    if (mCurrentState.barrierLayer != nullptr) {
-        sp<Layer> barrierLayer = mCurrentState.barrierLayer.promote();
+    if (mCurrentState.barrierLayer_legacy != nullptr) {
+        sp<Layer> barrierLayer = mCurrentState.barrierLayer_legacy.promote();
         if (barrierLayer == nullptr) {
             ALOGE("[%s] Unable to promote barrier Layer.", mName.string());
             // If we can't promote the layer we are intended to wait on,
             // then it is expired or otherwise invalid. Allow this transaction
             // to be applied as per normal (no synchronization).
-            mCurrentState.barrierLayer = nullptr;
+            mCurrentState.barrierLayer_legacy = nullptr;
         } else {
-            auto syncPoint = std::make_shared<SyncPoint>(mCurrentState.frameNumber);
+            auto syncPoint = std::make_shared<SyncPoint>(mCurrentState.frameNumber_legacy);
             if (barrierLayer->addSyncPoint(syncPoint)) {
                 mRemoteSyncPoints.push_back(std::move(syncPoint));
             } else {
                 // We already missed the frame we're supposed to synchronize
                 // on, so go ahead and apply the state update
-                mCurrentState.barrierLayer = nullptr;
+                mCurrentState.barrierLayer_legacy = nullptr;
             }
         }
 
@@ -946,7 +817,7 @@
 bool Layer::applyPendingStates(State* stateToCommit) {
     bool stateUpdateAvailable = false;
     while (!mPendingStates.empty()) {
-        if (mPendingStates[0].barrierLayer != nullptr) {
+        if (mPendingStates[0].barrierLayer_legacy != nullptr) {
             if (mRemoteSyncPoints.empty()) {
                 // If we don't have a sync point for this, apply it anyway. It
                 // will be visually wrong, but it should keep us from getting
@@ -957,7 +828,8 @@
                 continue;
             }
 
-            if (mRemoteSyncPoints.front()->getFrameNumber() != mPendingStates[0].frameNumber) {
+            if (mRemoteSyncPoints.front()->getFrameNumber() !=
+                mPendingStates[0].frameNumber_legacy) {
                 ALOGE("[%s] Unexpected sync point frame number found", mName.string());
 
                 // Signal our end of the sync point and then dispose of it
@@ -994,18 +866,11 @@
     return stateUpdateAvailable;
 }
 
-uint32_t Layer::doTransaction(uint32_t flags) {
-    ATRACE_CALL();
+uint32_t Layer::doTransactionResize(uint32_t flags, State* stateToCommit) {
+    const State& s(getDrawingState());
 
-    pushPendingState();
-    Layer::State c = getCurrentState();
-    if (!applyPendingStates(&c)) {
-        return 0;
-    }
-
-    const Layer::State& s(getDrawingState());
-
-    const bool sizeChanged = (c.requested.w != s.requested.w) || (c.requested.h != s.requested.h);
+    const bool sizeChanged = (stateToCommit->requested_legacy.w != s.requested_legacy.w) ||
+            (stateToCommit->requested_legacy.h != s.requested_legacy.h);
 
     if (sizeChanged) {
         // the size changed, we need to ask our client to request a new buffer
@@ -1015,16 +880,15 @@
                  "            requested={ wh={%4u,%4u} }}\n"
                  "  drawing={ active   ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n"
                  "            requested={ wh={%4u,%4u} }}\n",
-                 this, getName().string(), mCurrentTransform,
-                 getEffectiveScalingMode(), c.active.w, c.active.h, c.crop.left, c.crop.top,
-                 c.crop.right, c.crop.bottom, c.crop.getWidth(), c.crop.getHeight(), c.requested.w,
-                 c.requested.h, s.active.w, s.active.h, s.crop.left, s.crop.top, s.crop.right,
-                 s.crop.bottom, s.crop.getWidth(), s.crop.getHeight(), s.requested.w,
-                 s.requested.h);
-
-        // record the new size, form this point on, when the client request
-        // a buffer, it'll get the new size.
-        setDefaultBufferSize(c.requested.w, c.requested.h);
+                 this, getName().string(), mCurrentTransform, getEffectiveScalingMode(),
+                 stateToCommit->active_legacy.w, stateToCommit->active_legacy.h,
+                 stateToCommit->crop_legacy.left, stateToCommit->crop_legacy.top,
+                 stateToCommit->crop_legacy.right, stateToCommit->crop_legacy.bottom,
+                 stateToCommit->crop_legacy.getWidth(), stateToCommit->crop_legacy.getHeight(),
+                 stateToCommit->requested_legacy.w, stateToCommit->requested_legacy.h,
+                 s.active_legacy.w, s.active_legacy.h, s.crop_legacy.left, s.crop_legacy.top,
+                 s.crop_legacy.right, s.crop_legacy.bottom, s.crop_legacy.getWidth(),
+                 s.crop_legacy.getHeight(), s.requested_legacy.w, s.requested_legacy.h);
     }
 
     // Don't let Layer::doTransaction update the drawing state
@@ -1045,7 +909,9 @@
     // resizePending state is to avoid applying the state of the new buffer
     // to the old buffer. However in the state where we don't have an old buffer
     // there is no such concern but we may still be being used as a parent layer.
-    const bool resizePending = ((c.requested.w != c.active.w) || (c.requested.h != c.active.h)) &&
+    const bool resizePending =
+            ((stateToCommit->requested_legacy.w != stateToCommit->active_legacy.w) ||
+             (stateToCommit->requested_legacy.h != stateToCommit->active_legacy.h)) &&
             (getBE().compositionInfo.mBuffer != nullptr);
     if (!isFixedSize()) {
         if (resizePending && getBE().compositionInfo.hwc.sidebandStream == nullptr) {
@@ -1057,7 +923,7 @@
     // latching configuration. See Layer.h for a detailed discussion of
     // how geometry latching is controlled.
     if (!(flags & eDontUpdateGeometryState)) {
-        Layer::State& editCurrentState(getCurrentState());
+        State& editCurrentState(getCurrentState());
 
         // If mFreezeGeometryUpdates is true we are in the setGeometryAppliesWithResize
         // mode, which causes attributes which normally latch regardless of scaling mode,
@@ -1069,21 +935,37 @@
         // being stored in the same data structure while having different latching rules.
         // b/38182305
         //
-        // Careful that "c" and editCurrentState may not begin as equivalent due to
+        // Careful that "stateToCommit" and editCurrentState may not begin as equivalent due to
         // applyPendingStates in the presence of deferred transactions.
         if (mFreezeGeometryUpdates) {
-            float tx = c.active.transform.tx();
-            float ty = c.active.transform.ty();
-            c.active = c.requested;
-            c.active.transform.set(tx, ty);
-            editCurrentState.active = c.active;
+            float tx = stateToCommit->active_legacy.transform.tx();
+            float ty = stateToCommit->active_legacy.transform.ty();
+            stateToCommit->active_legacy = stateToCommit->requested_legacy;
+            stateToCommit->active_legacy.transform.set(tx, ty);
+            editCurrentState.active_legacy = stateToCommit->active_legacy;
         } else {
-            editCurrentState.active = editCurrentState.requested;
-            c.active = c.requested;
+            editCurrentState.active_legacy = editCurrentState.requested_legacy;
+            stateToCommit->active_legacy = stateToCommit->requested_legacy;
         }
     }
 
-    if (s.active != c.active) {
+    return flags;
+}
+
+uint32_t Layer::doTransaction(uint32_t flags) {
+    ATRACE_CALL();
+
+    pushPendingState();
+    State c = getCurrentState();
+    if (!applyPendingStates(&c)) {
+        return 0;
+    }
+
+    flags = doTransactionResize(flags, &c);
+
+    const State& s(getDrawingState());
+
+    if (getActiveGeometry(c) != getActiveGeometry(s)) {
         // invalidate and recompute the visible regions if needed
         flags |= Layer::eVisibleRegion;
     }
@@ -1094,8 +976,8 @@
         this->contentDirty = true;
 
         // we may use linear filtering, if the matrix scales us
-        const uint8_t type = c.active.transform.getType();
-        mNeedsFiltering = (!c.active.transform.preserveRects() || (type >= Transform::SCALE));
+        const uint8_t type = getActiveTransform(c).getType();
+        mNeedsFiltering = (!getActiveTransform(c).preserveRects() || type >= ui::Transform::SCALE);
     }
 
     // If the layer is hidden, signal and clear out all local sync points so
@@ -1115,28 +997,29 @@
 }
 
 uint32_t Layer::getTransactionFlags(uint32_t flags) {
-    return android_atomic_and(~flags, &mTransactionFlags) & flags;
+    return mTransactionFlags.fetch_and(~flags) & flags;
 }
 
 uint32_t Layer::setTransactionFlags(uint32_t flags) {
-    return android_atomic_or(flags, &mTransactionFlags);
+    return mTransactionFlags.fetch_or(flags);
 }
 
 bool Layer::setPosition(float x, float y, bool immediate) {
-    if (mCurrentState.requested.transform.tx() == x && mCurrentState.requested.transform.ty() == y)
+    if (mCurrentState.requested_legacy.transform.tx() == x &&
+        mCurrentState.requested_legacy.transform.ty() == y)
         return false;
     mCurrentState.sequence++;
 
     // We update the requested and active position simultaneously because
     // we want to apply the position portion of the transform matrix immediately,
     // but still delay scaling when resizing a SCALING_MODE_FREEZE layer.
-    mCurrentState.requested.transform.set(x, y);
+    mCurrentState.requested_legacy.transform.set(x, y);
     if (immediate && !mFreezeGeometryUpdates) {
         // Here we directly update the active state
         // unlike other setters, because we store it within
         // the transform, but use different latching rules.
         // b/38182305
-        mCurrentState.active.transform.set(x, y);
+        mCurrentState.active_legacy.transform.set(x, y);
     }
     mFreezeGeometryUpdates = mFreezeGeometryUpdates || !immediate;
 
@@ -1236,11 +1119,16 @@
 }
 
 bool Layer::setSize(uint32_t w, uint32_t h) {
-    if (mCurrentState.requested.w == w && mCurrentState.requested.h == h) return false;
-    mCurrentState.requested.w = w;
-    mCurrentState.requested.h = h;
+    if (mCurrentState.requested_legacy.w == w && mCurrentState.requested_legacy.h == h)
+        return false;
+    mCurrentState.requested_legacy.w = w;
+    mCurrentState.requested_legacy.h = h;
     mCurrentState.modified = true;
     setTransactionFlags(eTransactionNeeded);
+
+    // record the new size, from this point on, when the client request
+    // a buffer, it'll get the new size.
+    setDefaultBufferSize(mCurrentState.requested_legacy.w, mCurrentState.requested_legacy.h);
     return true;
 }
 bool Layer::setAlpha(float alpha) {
@@ -1268,7 +1156,7 @@
 
 bool Layer::setMatrix(const layer_state_t::matrix22_t& matrix,
         bool allowNonRectPreservingTransforms) {
-    Transform t;
+    ui::Transform t;
     t.set(matrix.dsdx, matrix.dtdy, matrix.dtdx, matrix.dsdy);
 
     if (!allowNonRectPreservingTransforms && !t.preserveRects()) {
@@ -1276,13 +1164,15 @@
         return false;
     }
     mCurrentState.sequence++;
-    mCurrentState.requested.transform.set(matrix.dsdx, matrix.dtdy, matrix.dtdx, matrix.dsdy);
+    mCurrentState.requested_legacy.transform.set(matrix.dsdx, matrix.dtdy, matrix.dtdx,
+                                                 matrix.dsdy);
     mCurrentState.modified = true;
     setTransactionFlags(eTransactionNeeded);
     return true;
 }
+
 bool Layer::setTransparentRegionHint(const Region& transparent) {
-    mCurrentState.requestedTransparentRegion = transparent;
+    mCurrentState.requestedTransparentRegion_legacy = transparent;
     mCurrentState.modified = true;
     setTransactionFlags(eTransactionNeeded);
     return true;
@@ -1297,26 +1187,12 @@
     return true;
 }
 
-bool Layer::setCrop(const Rect& crop, bool immediate) {
-    if (mCurrentState.requestedCrop == crop) return false;
+bool Layer::setCrop_legacy(const Rect& crop, bool immediate) {
+    if (mCurrentState.requestedCrop_legacy == crop) return false;
     mCurrentState.sequence++;
-    mCurrentState.requestedCrop = crop;
+    mCurrentState.requestedCrop_legacy = crop;
     if (immediate && !mFreezeGeometryUpdates) {
-        mCurrentState.crop = crop;
-    }
-    mFreezeGeometryUpdates = mFreezeGeometryUpdates || !immediate;
-
-    mCurrentState.modified = true;
-    setTransactionFlags(eTransactionNeeded);
-    return true;
-}
-
-bool Layer::setFinalCrop(const Rect& crop, bool immediate) {
-    if (mCurrentState.requestedFinalCrop == crop) return false;
-    mCurrentState.sequence++;
-    mCurrentState.requestedFinalCrop = crop;
-    if (immediate && !mFreezeGeometryUpdates) {
-        mCurrentState.finalCrop = crop;
+        mCurrentState.crop_legacy = crop;
     }
     mFreezeGeometryUpdates = mFreezeGeometryUpdates || !immediate;
 
@@ -1356,30 +1232,29 @@
     return p->getLayerStack();
 }
 
-void Layer::deferTransactionUntil(const sp<Layer>& barrierLayer, uint64_t frameNumber) {
-    mCurrentState.barrierLayer = barrierLayer;
-    mCurrentState.frameNumber = frameNumber;
+void Layer::deferTransactionUntil_legacy(const sp<Layer>& barrierLayer, uint64_t frameNumber) {
+    mCurrentState.barrierLayer_legacy = barrierLayer;
+    mCurrentState.frameNumber_legacy = frameNumber;
     // We don't set eTransactionNeeded, because just receiving a deferral
     // request without any other state updates shouldn't actually induce a delay
     mCurrentState.modified = true;
     pushPendingState();
-    mCurrentState.barrierLayer = nullptr;
-    mCurrentState.frameNumber = 0;
+    mCurrentState.barrierLayer_legacy = nullptr;
+    mCurrentState.frameNumber_legacy = 0;
     mCurrentState.modified = false;
 }
 
-void Layer::deferTransactionUntil(const sp<IBinder>& barrierHandle, uint64_t frameNumber) {
+void Layer::deferTransactionUntil_legacy(const sp<IBinder>& barrierHandle, uint64_t frameNumber) {
     sp<Handle> handle = static_cast<Handle*>(barrierHandle.get());
-    deferTransactionUntil(handle->owner.promote(), frameNumber);
+    deferTransactionUntil_legacy(handle->owner.promote(), frameNumber);
 }
 
-
 // ----------------------------------------------------------------------------
 // pageflip handling...
 // ----------------------------------------------------------------------------
 
 bool Layer::isHiddenByPolicy() const {
-    const Layer::State& s(mDrawingState);
+    const State& s(mDrawingState);
     const auto& parent = mDrawingParent.promote();
     if (parent != nullptr && parent->isHiddenByPolicy()) {
         return true;
@@ -1400,15 +1275,15 @@
     return usage;
 }
 
-void Layer::updateTransformHint(const sp<const DisplayDevice>& hw) const {
+void Layer::updateTransformHint(const sp<const DisplayDevice>& display) const {
     uint32_t orientation = 0;
     if (!mFlinger->mDebugDisableTransformHint) {
         // The transform hint is used to improve performance, but we can
         // only have a single transform hint, it cannot
         // apply to all displays.
-        const Transform& planeTransform(hw->getTransform());
+        const ui::Transform& planeTransform = display->getTransform();
         orientation = planeTransform.getOrientation();
-        if (orientation & Transform::ROT_INVALID) {
+        if (orientation & ui::Transform::ROT_INVALID) {
             orientation = 0;
         }
     }
@@ -1419,34 +1294,34 @@
 // debugging
 // ----------------------------------------------------------------------------
 
+// TODO(marissaw): add new layer state info to layer debugging
 LayerDebugInfo Layer::getLayerDebugInfo() const {
     LayerDebugInfo info;
-    const Layer::State& ds = getDrawingState();
+    const State& ds = getDrawingState();
     info.mName = getName();
     sp<Layer> parent = getParent();
     info.mParentName = (parent == nullptr ? std::string("none") : parent->getName().string());
     info.mType = String8(getTypeId());
-    info.mTransparentRegion = ds.activeTransparentRegion;
+    info.mTransparentRegion = ds.activeTransparentRegion_legacy;
     info.mVisibleRegion = visibleRegion;
     info.mSurfaceDamageRegion = surfaceDamageRegion;
     info.mLayerStack = getLayerStack();
-    info.mX = ds.active.transform.tx();
-    info.mY = ds.active.transform.ty();
+    info.mX = ds.active_legacy.transform.tx();
+    info.mY = ds.active_legacy.transform.ty();
     info.mZ = ds.z;
-    info.mWidth = ds.active.w;
-    info.mHeight = ds.active.h;
-    info.mCrop = ds.crop;
-    info.mFinalCrop = ds.finalCrop;
+    info.mWidth = ds.active_legacy.w;
+    info.mHeight = ds.active_legacy.h;
+    info.mCrop = ds.crop_legacy;
     info.mColor = ds.color;
     info.mFlags = ds.flags;
     info.mPixelFormat = getPixelFormat();
     info.mDataSpace = static_cast<android_dataspace>(mCurrentDataSpace);
-    info.mMatrix[0][0] = ds.active.transform[0][0];
-    info.mMatrix[0][1] = ds.active.transform[0][1];
-    info.mMatrix[1][0] = ds.active.transform[1][0];
-    info.mMatrix[1][1] = ds.active.transform[1][1];
+    info.mMatrix[0][0] = ds.active_legacy.transform[0][0];
+    info.mMatrix[0][1] = ds.active_legacy.transform[0][1];
+    info.mMatrix[1][0] = ds.active_legacy.transform[1][0];
+    info.mMatrix[1][1] = ds.active_legacy.transform[1][1];
     {
-        sp<const GraphicBuffer> buffer = getBE().compositionInfo.mBuffer;
+        sp<const GraphicBuffer> buffer = mActiveBuffer;
         if (buffer != 0) {
             info.mActiveBufferWidth = buffer->getWidth();
             info.mActiveBufferHeight = buffer->getHeight();
@@ -1467,19 +1342,22 @@
 }
 
 void Layer::miniDumpHeader(String8& result) {
-    result.append("----------------------------------------");
-    result.append("---------------------------------------\n");
+    result.append("-------------------------------");
+    result.append("-------------------------------");
+    result.append("-----------------------------\n");
     result.append(" Layer name\n");
     result.append("           Z | ");
     result.append(" Comp Type | ");
+    result.append(" Transform | ");
     result.append("  Disp Frame (LTRB) | ");
     result.append("         Source Crop (LTRB)\n");
-    result.append("----------------------------------------");
-    result.append("---------------------------------------\n");
+    result.append("-------------------------------");
+    result.append("-------------------------------");
+    result.append("-----------------------------\n");
 }
 
-void Layer::miniDump(String8& result, int32_t hwcId) const {
-    if (getBE().mHwcLayers.count(hwcId) == 0) {
+void Layer::miniDump(String8& result, int32_t displayId) const {
+    if (getBE().mHwcLayers.count(displayId) == 0) {
         return;
     }
 
@@ -1496,21 +1374,29 @@
 
     result.appendFormat(" %s\n", name.string());
 
-    const Layer::State& layerState(getDrawingState());
-    const LayerBE::HWCInfo& hwcInfo = getBE().mHwcLayers.at(hwcId);
+    const State& layerState(getDrawingState());
+    const LayerBE::HWCInfo& hwcInfo = getBE().mHwcLayers.at(displayId);
     if (layerState.zOrderRelativeOf != nullptr || mDrawingParent != nullptr) {
         result.appendFormat("  rel %6d | ", layerState.z);
     } else {
         result.appendFormat("  %10d | ", layerState.z);
     }
-    result.appendFormat("%10s | ", to_string(getCompositionType(hwcId)).c_str());
+    result.appendFormat("%10s | ", to_string(getCompositionType(displayId)).c_str());
+    result.appendFormat("%10s | ", to_string(hwcInfo.transform).c_str());
     const Rect& frame = hwcInfo.displayFrame;
     result.appendFormat("%4d %4d %4d %4d | ", frame.left, frame.top, frame.right, frame.bottom);
     const FloatRect& crop = hwcInfo.sourceCrop;
     result.appendFormat("%6.1f %6.1f %6.1f %6.1f\n", crop.left, crop.top, crop.right, crop.bottom);
 
-    result.append("- - - - - - - - - - - - - - - - - - - - ");
-    result.append("- - - - - - - - - - - - - - - - - - - -\n");
+    result.append("- - - - - - - - - - - - - - - -\n");
+
+    std::string compositionInfoStr;
+    getBE().compositionInfo.dump(compositionInfoStr, "compositionInfo");
+    result.append(compositionInfoStr.c_str());
+
+    result.append("- - - - - - - - - - - - - - - -");
+    result.append("- - - - - - - - - - - - - - - -");
+    result.append("- - - - - - - - - - - - - - -\n");
 }
 
 void Layer::dumpFrameStats(String8& result) const {
@@ -1657,6 +1543,25 @@
     return true;
 }
 
+bool Layer::setColorTransform(const mat4& matrix) {
+    if (mCurrentState.colorTransform == matrix) {
+        return false;
+    }
+    ++mCurrentState.sequence;
+    mCurrentState.colorTransform = matrix;
+    setTransactionFlags(eTransactionNeeded);
+    return true;
+}
+
+const mat4& Layer::getColorTransform() const {
+    return getDrawingState().colorTransform;
+}
+
+bool Layer::hasColorTransform() const {
+    static const mat4 identityMatrix = mat4();
+    return getDrawingState().colorTransform != identityMatrix;
+}
+
 bool Layer::isLegacyDataSpace() const {
     // return true when no higher bits are set
     return !(mCurrentDataSpace & (ui::Dataspace::STANDARD_MASK |
@@ -1867,8 +1772,8 @@
     traverseChildrenInZOrderInner(layersInTree, stateSet, visitor);
 }
 
-Transform Layer::getTransform() const {
-    Transform t;
+ui::Transform Layer::getTransform() const {
+    ui::Transform t;
     const auto& p = mDrawingParent.promote();
     if (p != nullptr) {
         t = p->getTransform();
@@ -1888,14 +1793,14 @@
                 bufferHeight = p->getBE().compositionInfo.mBuffer->getWidth();
                 bufferWidth = p->getBE().compositionInfo.mBuffer->getHeight();
             }
-            float sx = p->getDrawingState().active.w / static_cast<float>(bufferWidth);
-            float sy = p->getDrawingState().active.h / static_cast<float>(bufferHeight);
-            Transform extraParentScaling;
+            float sx = p->getActiveWidth(p->getDrawingState()) / static_cast<float>(bufferWidth);
+            float sy = p->getActiveHeight(p->getDrawingState()) / static_cast<float>(bufferHeight);
+            ui::Transform extraParentScaling;
             extraParentScaling.set(sx, 0, 0, sy);
             t = t * extraParentScaling;
         }
     }
-    return t * getDrawingState().active.transform;
+    return t * getActiveTransform(getDrawingState());
 }
 
 half Layer::getAlpha() const {
@@ -1924,8 +1829,8 @@
     const LayerVector& children = useDrawing ? mDrawingChildren : mCurrentChildren;
     const State& state = useDrawing ? mDrawingState : mCurrentState;
 
-    Transform requestedTransform = state.active.transform;
-    Transform transform = getTransform();
+    ui::Transform requestedTransform = state.active_legacy.transform;
+    ui::Transform transform = getTransform();
 
     layerInfo->set_id(sequence);
     layerInfo->set_name(getName().c_str());
@@ -1942,7 +1847,7 @@
         }
     }
 
-    LayerProtoHelper::writeToProto(state.activeTransparentRegion,
+    LayerProtoHelper::writeToProto(state.activeTransparentRegion_legacy,
                                    layerInfo->mutable_transparent_region());
     LayerProtoHelper::writeToProto(visibleRegion, layerInfo->mutable_visible_region());
     LayerProtoHelper::writeToProto(surfaceDamageRegion, layerInfo->mutable_damage_region());
@@ -1959,11 +1864,10 @@
     requestedPosition->set_y(requestedTransform.ty());
 
     SizeProto* size = layerInfo->mutable_size();
-    size->set_w(state.active.w);
-    size->set_h(state.active.h);
+    size->set_w(state.active_legacy.w);
+    size->set_h(state.active_legacy.h);
 
-    LayerProtoHelper::writeToProto(state.crop, layerInfo->mutable_crop());
-    LayerProtoHelper::writeToProto(state.finalCrop, layerInfo->mutable_final_crop());
+    LayerProtoHelper::writeToProto(state.crop_legacy, layerInfo->mutable_crop());
 
     layerInfo->set_is_opaque(isOpaque(state));
     layerInfo->set_invalidate(contentDirty);
@@ -1993,6 +1897,8 @@
     auto buffer = getBE().compositionInfo.mBuffer;
     if (buffer != nullptr) {
         LayerProtoHelper::writeToProto(buffer, layerInfo->mutable_active_buffer());
+        LayerProtoHelper::writeToProto(ui::Transform(mCurrentTransform),
+                                       layerInfo->mutable_buffer_transform());
     }
 
     layerInfo->set_queued_frames(getQueuedFrameCount());
@@ -2002,22 +1908,23 @@
     layerInfo->set_curr_frame(mCurrentFrameNumber);
 
     for (const auto& pendingState : mPendingStates) {
-        auto barrierLayer = pendingState.barrierLayer.promote();
+        auto barrierLayer = pendingState.barrierLayer_legacy.promote();
         if (barrierLayer != nullptr) {
             BarrierLayerProto* barrierLayerProto = layerInfo->add_barrier_layer();
             barrierLayerProto->set_id(barrierLayer->sequence);
-            barrierLayerProto->set_frame_number(pendingState.frameNumber);
+            barrierLayerProto->set_frame_number(pendingState.frameNumber_legacy);
         }
     }
 }
 
-void Layer::writeToProto(LayerProto* layerInfo, int32_t hwcId) {
-    if (!hasHwcLayer(hwcId)) {
+void Layer::writeToProto(LayerProto* layerInfo, int32_t displayId) {
+    if (!hasHwcLayer(displayId)) {
         return;
     }
+
     writeToProto(layerInfo, LayerVector::StateSet::Drawing);
 
-    const auto& hwcInfo = getBE().mHwcLayers.at(hwcId);
+    const auto& hwcInfo = getBE().mHwcLayers.at(displayId);
 
     const Rect& frame = hwcInfo.displayFrame;
     LayerProtoHelper::writeToProto(frame, layerInfo->mutable_hwc_frame());
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 2239679..f2cda03 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -19,40 +19,38 @@
 
 #include <sys/types.h>
 
-#include <utils/RefBase.h>
-#include <utils/String8.h>
-#include <utils/Timers.h>
-
+#include <gui/BufferQueue.h>
+#include <gui/ISurfaceComposerClient.h>
+#include <gui/LayerState.h>
+#include <layerproto/LayerProtoHeader.h>
+#include <math/vec4.h>
+#include <renderengine/Mesh.h>
+#include <renderengine/Texture.h>
 #include <ui/FloatRect.h>
 #include <ui/FrameStats.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/PixelFormat.h>
 #include <ui/Region.h>
+#include <ui/Transform.h>
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+#include <utils/Timers.h>
 
-#include <gui/ISurfaceComposerClient.h>
-#include <gui/LayerState.h>
-#include <gui/BufferQueue.h>
-
-#include <list>
 #include <cstdint>
+#include <list>
+#include <vector>
 
 #include "Client.h"
 #include "FrameTracker.h"
+#include "LayerBE.h"
 #include "LayerVector.h"
 #include "MonitoredProducer.h"
 #include "SurfaceFlinger.h"
 #include "TimeStats/TimeStats.h"
-#include "Transform.h"
 
-#include <layerproto/LayerProtoHeader.h>
 #include "DisplayHardware/HWComposer.h"
 #include "DisplayHardware/HWComposerBufferCache.h"
 #include "RenderArea.h"
-#include "RenderEngine/Mesh.h"
-#include "RenderEngine/Texture.h"
-
-#include <math/vec4.h>
-#include <vector>
 
 using namespace android::surfaceflinger;
 
@@ -74,77 +72,27 @@
 
 // ---------------------------------------------------------------------------
 
-struct CompositionInfo {
-    HWC2::Composition compositionType;
-    sp<GraphicBuffer> mBuffer = nullptr;
-    int mBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
-    struct {
-        HWComposer* hwc;
-        sp<Fence> fence;
-        HWC2::BlendMode blendMode;
-        Rect displayFrame;
-        float alpha;
-        FloatRect sourceCrop;
-        HWC2::Transform transform;
-        int z;
-        int type;
-        int appId;
-        Region visibleRegion;
-        Region surfaceDamage;
-        sp<NativeHandle> sidebandStream;
-        android_dataspace dataspace;
-        hwc_color_t color;
-    } hwc;
-    struct {
-        RE::RenderEngine* renderEngine;
-        Mesh* mesh;
-    } renderEngine;
-};
+struct LayerCreationArgs {
+    LayerCreationArgs(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name,
+                      uint32_t w, uint32_t h, uint32_t flags)
+          : flinger(flinger), client(client), name(name), w(w), h(h), flags(flags) {}
 
-class LayerBE {
-public:
-    LayerBE();
-
-    // The mesh used to draw the layer in GLES composition mode
-    Mesh mMesh;
-
-    // HWC items, accessed from the main thread
-    struct HWCInfo {
-        HWCInfo()
-              : hwc(nullptr),
-                layer(nullptr),
-                forceClientComposition(false),
-                compositionType(HWC2::Composition::Invalid),
-                clearClientTarget(false),
-                transform(HWC2::Transform::None) {}
-
-        HWComposer* hwc;
-        HWC2::Layer* layer;
-        bool forceClientComposition;
-        HWC2::Composition compositionType;
-        bool clearClientTarget;
-        Rect displayFrame;
-        FloatRect sourceCrop;
-        HWComposerBufferCache bufferCache;
-        HWC2::Transform transform;
-    };
-
-    // A layer can be attached to multiple displays when operating in mirror mode
-    // (a.k.a: when several displays are attached with equal layerStack). In this
-    // case we need to keep track. In non-mirror mode, a layer will have only one
-    // HWCInfo. This map key is a display layerStack.
-    std::unordered_map<int32_t, HWCInfo> mHwcLayers;
-
-    CompositionInfo compositionInfo;
+    SurfaceFlinger* flinger;
+    const sp<Client>& client;
+    const String8& name;
+    uint32_t w;
+    uint32_t h;
+    uint32_t flags;
 };
 
 class Layer : public virtual RefBase {
-    static int32_t sSequence;
+    static std::atomic<int32_t> sSequence;
 
 public:
+    friend class LayerBE;
     LayerBE& getBE() { return mBE; }
     LayerBE& getBE() const { return mBE; }
-    mutable bool contentDirty;
+    mutable bool contentDirty{false};
     // regions below are in window-manager space
     Region visibleRegion;
     Region coveredRegion;
@@ -154,7 +102,7 @@
     // Layer serial number.  This gives layers an explicit ordering, so we
     // have a stable sort order when their layer stack and Z-order are
     // the same.
-    int32_t sequence;
+    int32_t sequence{sSequence++};
 
     enum { // flags for doTransaction()
         eDontUpdateGeometryState = 0x00000001,
@@ -164,7 +112,7 @@
     struct Geometry {
         uint32_t w;
         uint32_t h;
-        Transform transform;
+        ui::Transform transform;
 
         inline bool operator==(const Geometry& rhs) const {
             return (w == rhs.w && h == rhs.h) && (transform.tx() == rhs.transform.tx()) &&
@@ -174,8 +122,8 @@
     };
 
     struct State {
-        Geometry active;
-        Geometry requested;
+        Geometry active_legacy;
+        Geometry requested_legacy;
         int32_t z;
 
         // The identifier of the layer stack this layer belongs to. A layer can
@@ -191,23 +139,19 @@
         bool modified;
 
         // Crop is expressed in layer space coordinate.
-        Rect crop;
-        Rect requestedCrop;
-
-        // finalCrop is expressed in display space coordinate.
-        Rect finalCrop;
-        Rect requestedFinalCrop;
+        Rect crop_legacy;
+        Rect requestedCrop_legacy;
 
         // If set, defers this state update until the identified Layer
         // receives a frame with the given frameNumber
-        wp<Layer> barrierLayer;
-        uint64_t frameNumber;
+        wp<Layer> barrierLayer_legacy;
+        uint64_t frameNumber_legacy;
 
         // the transparentRegion hint is a bit special, it's latched only
         // when we receive a buffer -- this is because it's "content"
         // dependent.
-        Region activeTransparentRegion;
-        Region requestedTransparentRegion;
+        Region activeTransparentRegion_legacy;
+        Region requestedTransparentRegion_legacy;
 
         int32_t appId;
         int32_t type;
@@ -219,10 +163,28 @@
         SortedVector<wp<Layer>> zOrderRelatives;
 
         half4 color;
+
+        // The fields below this point are only used by BufferStateLayer
+        Geometry active;
+
+        uint32_t transform;
+        bool transformToDisplayInverse;
+
+        Rect crop;
+        Region transparentRegionHint;
+
+        sp<GraphicBuffer> buffer;
+        sp<Fence> acquireFence;
+        ui::Dataspace dataspace;
+        HdrMetadata hdrMetadata;
+        Region surfaceDamageRegion;
+        int32_t api;
+
+        sp<NativeHandle> sidebandStream;
+        mat4 colorTransform;
     };
 
-    Layer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name, uint32_t w,
-          uint32_t h, uint32_t flags);
+    explicit Layer(const LayerCreationArgs& args);
     virtual ~Layer();
 
     void setPrimaryDisplayOnly() { mPrimaryDisplayOnly = true; }
@@ -254,11 +216,12 @@
     // also the rendered size of the layer prior to any transformations. Parent
     // or local matrix transformations will not affect the size of the buffer,
     // but may affect it's on-screen size or clipping.
-    bool setSize(uint32_t w, uint32_t h);
+    virtual bool setSize(uint32_t w, uint32_t h);
     // Set a 2x2 transformation matrix on the layer. This transform
     // will be applied after parent transforms, but before any final
     // producer specified transform.
-    bool setMatrix(const layer_state_t::matrix22_t& matrix, bool allowNonRectPreservingTransforms);
+    virtual bool setMatrix(const layer_state_t::matrix22_t& matrix,
+                           bool allowNonRectPreservingTransforms);
 
     // This second set of geometry attributes are controlled by
     // setGeometryAppliesWithResize, and their default mode is to be
@@ -268,32 +231,46 @@
 
     // setPosition operates in parent buffer space (pre parent-transform) or display
     // space for top-level layers.
-    bool setPosition(float x, float y, bool immediate);
+    virtual bool setPosition(float x, float y, bool immediate);
     // Buffer space
-    bool setCrop(const Rect& crop, bool immediate);
-    // Parent buffer space/display space
-    bool setFinalCrop(const Rect& crop, bool immediate);
+    virtual bool setCrop_legacy(const Rect& crop, bool immediate);
 
     // TODO(b/38182121): Could we eliminate the various latching modes by
     // using the layer hierarchy?
     // -----------------------------------------------------------------------
-    bool setLayer(int32_t z);
-    bool setRelativeLayer(const sp<IBinder>& relativeToHandle, int32_t relativeZ);
+    virtual bool setLayer(int32_t z);
+    virtual bool setRelativeLayer(const sp<IBinder>& relativeToHandle, int32_t relativeZ);
 
-    bool setAlpha(float alpha);
-    bool setColor(const half3& color);
-    bool setTransparentRegionHint(const Region& transparent);
-    bool setFlags(uint8_t flags, uint8_t mask);
-    bool setLayerStack(uint32_t layerStack);
-    uint32_t getLayerStack() const;
-    void deferTransactionUntil(const sp<IBinder>& barrierHandle, uint64_t frameNumber);
-    void deferTransactionUntil(const sp<Layer>& barrierLayer, uint64_t frameNumber);
-    bool setOverrideScalingMode(int32_t overrideScalingMode);
-    void setInfo(int32_t type, int32_t appId);
-    bool reparentChildren(const sp<IBinder>& layer);
-    void setChildrenDrawingParent(const sp<Layer>& layer);
-    bool reparent(const sp<IBinder>& newParentHandle);
-    bool detachChildren();
+    virtual bool setAlpha(float alpha);
+    virtual bool setColor(const half3& color);
+    virtual bool setTransparentRegionHint(const Region& transparent);
+    virtual bool setFlags(uint8_t flags, uint8_t mask);
+    virtual bool setLayerStack(uint32_t layerStack);
+    virtual uint32_t getLayerStack() const;
+    virtual void deferTransactionUntil_legacy(const sp<IBinder>& barrierHandle,
+                                              uint64_t frameNumber);
+    virtual void deferTransactionUntil_legacy(const sp<Layer>& barrierLayer, uint64_t frameNumber);
+    virtual bool setOverrideScalingMode(int32_t overrideScalingMode);
+    virtual void setInfo(int32_t type, int32_t appId);
+    virtual bool reparentChildren(const sp<IBinder>& layer);
+    virtual void setChildrenDrawingParent(const sp<Layer>& layer);
+    virtual bool reparent(const sp<IBinder>& newParentHandle);
+    virtual bool detachChildren();
+    virtual bool setColorTransform(const mat4& matrix);
+    virtual const mat4& getColorTransform() const;
+    virtual bool hasColorTransform() const;
+
+    // Used only to set BufferStateLayer state
+    virtual bool setTransform(uint32_t /*transform*/) { return false; };
+    virtual bool setTransformToDisplayInverse(bool /*transformToDisplayInverse*/) { return false; };
+    virtual bool setCrop(const Rect& /*crop*/) { return false; };
+    virtual bool setBuffer(sp<GraphicBuffer> /*buffer*/) { return false; };
+    virtual bool setAcquireFence(const sp<Fence>& /*fence*/) { return false; };
+    virtual bool setDataspace(ui::Dataspace /*dataspace*/) { return false; };
+    virtual bool setHdrMetadata(const HdrMetadata& /*hdrMetadata*/) { return false; };
+    virtual bool setSurfaceDamageRegion(const Region& /*surfaceDamage*/) { return false; };
+    virtual bool setApi(int32_t /*api*/) { return false; };
+    virtual bool setSidebandStream(const sp<NativeHandle>& /*sidebandStream*/) { return false; };
 
     ui::Dataspace getDataSpace() const { return mCurrentDataSpace; }
 
@@ -310,6 +287,7 @@
     virtual void useSurfaceDamage() {}
     virtual void useEmptyDamage() {}
 
+    uint32_t getTransactionFlags() const { return mTransactionFlags; }
     uint32_t getTransactionFlags(uint32_t flags);
     uint32_t setTransactionFlags(uint32_t flags);
 
@@ -317,7 +295,8 @@
         return getLayerStack() == layerStack && (!mPrimaryDisplayOnly || isPrimaryDisplay);
     }
 
-    void computeGeometry(const RenderArea& renderArea, Mesh& mesh, bool useIdentityTransform) const;
+    void computeGeometry(const RenderArea& renderArea, renderengine::Mesh& mesh,
+                         bool useIdentityTransform) const;
     FloatRect computeBounds(const Region& activeTransparentRegion) const;
     FloatRect computeBounds() const;
 
@@ -366,37 +345,48 @@
     virtual bool isCreatedFromMainThread() const { return false; }
 
 
-    bool isPendingRemoval() const { return mPendingRemoval; }
+    bool isRemoved() const { return mRemoved; }
 
     void writeToProto(LayerProto* layerInfo,
                       LayerVector::StateSet stateSet = LayerVector::StateSet::Drawing);
 
-    void writeToProto(LayerProto* layerInfo, int32_t hwcId);
+    void writeToProto(LayerProto* layerInfo, int32_t displayId);
+
+    virtual Geometry getActiveGeometry(const Layer::State& s) const { return s.active_legacy; }
+    virtual uint32_t getActiveWidth(const Layer::State& s) const { return s.active_legacy.w; }
+    virtual uint32_t getActiveHeight(const Layer::State& s) const { return s.active_legacy.h; }
+    virtual ui::Transform getActiveTransform(const Layer::State& s) const {
+        return s.active_legacy.transform;
+    }
+    virtual Region getActiveTransparentRegion(const Layer::State& s) const {
+        return s.activeTransparentRegion_legacy;
+    }
+    virtual Rect getCrop(const Layer::State& s) const { return s.crop_legacy; }
 
 protected:
     /*
      * onDraw - draws the surface.
      */
     virtual void onDraw(const RenderArea& renderArea, const Region& clip,
-                        bool useIdentityTransform) const = 0;
+                        bool useIdentityTransform) = 0;
 
 public:
     virtual void setDefaultBufferSize(uint32_t /*w*/, uint32_t /*h*/) {}
 
     virtual bool isHdrY410() const { return false; }
 
-    void setGeometry(const sp<const DisplayDevice>& displayDevice, uint32_t z);
-    void forceClientComposition(int32_t hwcId);
-    bool getForceClientComposition(int32_t hwcId);
-    virtual void setPerFrameData(const sp<const DisplayDevice>& displayDevice) = 0;
+    void setGeometry(const sp<const DisplayDevice>& display, uint32_t z);
+    void forceClientComposition(int32_t displayId);
+    bool getForceClientComposition(int32_t displayId);
+    virtual void setPerFrameData(const sp<const DisplayDevice>& display) = 0;
 
     // callIntoHwc exists so we can update our local state and call
     // acceptDisplayChanges without unnecessarily updating the device's state
-    void setCompositionType(int32_t hwcId, HWC2::Composition type, bool callIntoHwc = true);
-    HWC2::Composition getCompositionType(int32_t hwcId) const;
-    void setClearClientTarget(int32_t hwcId, bool clear);
-    bool getClearClientTarget(int32_t hwcId) const;
-    void updateCursorPosition(const sp<const DisplayDevice>& hw);
+    void setCompositionType(int32_t displayId, HWC2::Composition type, bool callIntoHwc = true);
+    HWC2::Composition getCompositionType(int32_t displayId) const;
+    void setClearClientTarget(int32_t displayId, bool clear);
+    bool getClearClientTarget(int32_t displayId) const;
+    void updateCursorPosition(const sp<const DisplayDevice>& display);
 
     /*
      * called after page-flip
@@ -432,9 +422,8 @@
      * draw - performs some global clipping optimizations
      * and calls onDraw().
      */
-    void draw(const RenderArea& renderArea, const Region& clip) const;
-    void draw(const RenderArea& renderArea, bool useIdentityTransform) const;
-    void draw(const RenderArea& renderArea) const;
+    void draw(const RenderArea& renderArea, const Region& clip);
+    void draw(const RenderArea& renderArea, bool useIdentityTransform);
 
     /*
      * doTransaction - process the transaction. This is a good place to figure
@@ -472,13 +461,13 @@
      * operation, so this should be set only if needed). Typically this is used
      * to figure out if the content or size of a surface has changed.
      */
-    virtual Region latchBuffer(bool& /*recomputeVisibleRegions*/, nsecs_t /*latchTime*/) {
+    virtual Region latchBuffer(bool& /*recomputeVisibleRegions*/, nsecs_t /*latchTime*/,
+                               const sp<Fence>& /*releaseFence*/) {
         return {};
     }
 
     virtual bool isBufferLatched() const { return false; }
 
-    bool isPotentialCursor() const { return mPotentialCursor; }
     /*
      * called with the state lock from a binder thread when the layer is
      * removed from the current list to the pending removal list
@@ -493,7 +482,7 @@
 
     // Updates the transform hint in our SurfaceFlingerConsumer to match
     // the current orientation of the display device.
-    void updateTransformHint(const sp<const DisplayDevice>& hw) const;
+    void updateTransformHint(const sp<const DisplayDevice>& display) const;
 
     /*
      * returns the rectangle that crops the content of the layer and scales it
@@ -502,37 +491,37 @@
     Rect getContentCrop() const;
 
     /*
-     * Returns if a frame is queued.
+     * Returns if a frame is ready
      */
-    bool hasQueuedFrame() const {
-        return mQueuedFrames > 0 || mSidebandStreamChanged || mAutoRefresh;
-    }
+    virtual bool hasReadyFrame() const { return false; }
 
-    int32_t getQueuedFrameCount() const { return mQueuedFrames; }
+    virtual int32_t getQueuedFrameCount() const { return 0; }
 
     // -----------------------------------------------------------------------
 
-    bool createHwcLayer(HWComposer* hwc, int32_t hwcId);
-    bool destroyHwcLayer(int32_t hwcId);
+    bool createHwcLayer(HWComposer* hwc, int32_t displayId);
+    bool destroyHwcLayer(int32_t displayId);
     void destroyAllHwcLayers();
 
-    bool hasHwcLayer(int32_t hwcId) {
-        return getBE().mHwcLayers.count(hwcId) > 0;
-    }
+    bool hasHwcLayer(int32_t displayId) { return getBE().mHwcLayers.count(displayId) > 0; }
 
-    HWC2::Layer* getHwcLayer(int32_t hwcId) {
-        if (getBE().mHwcLayers.count(hwcId) == 0) {
+    HWC2::Layer* getHwcLayer(int32_t displayId) {
+        if (getBE().mHwcLayers.count(displayId) == 0) {
             return nullptr;
         }
-        return getBE().mHwcLayers[hwcId].layer;
+        return getBE().mHwcLayers[displayId].layer.get();
+    }
+
+    bool setHwcLayer(int32_t hwcId) {
+        if (getBE().mHwcLayers.count(hwcId) == 0) {
+            return false;
+        }
+        getBE().compositionInfo.hwc.hwcLayer = getBE().mHwcLayers[hwcId].layer;
+        return true;
     }
 
     // -----------------------------------------------------------------------
-
     void clearWithOpenGL(const RenderArea& renderArea) const;
-    void setFiltering(bool filtering);
-    bool getFiltering() const;
-
 
     inline const State& getDrawingState() const { return mDrawingState; }
     inline const State& getCurrentState() const { return mCurrentState; }
@@ -542,7 +531,7 @@
 
     /* always call base class first */
     static void miniDumpHeader(String8& result);
-    void miniDump(String8& result, int32_t hwcId) const;
+    void miniDump(String8& result, int32_t displayId) const;
     void dumpFrameStats(String8& result) const;
     void dumpFrameEvents(String8& result);
     void clearFrameStats();
@@ -559,7 +548,7 @@
 
     virtual bool getTransformToDisplayInverse() const { return false; }
 
-    Transform getTransform() const;
+    ui::Transform getTransform() const;
 
     // Returns the Alpha of the Surface, accounting for the Alpha
     // of parent Surfaces in the hierarchy (alpha's will be multiplied
@@ -594,7 +583,7 @@
     // SurfaceFlinger to complete a transaction.
     void commitChildList();
     int32_t getZ() const;
-    void pushPendingState();
+    virtual void pushPendingState();
 
 protected:
     // constant
@@ -605,12 +594,12 @@
      */
     class LayerCleaner {
         sp<SurfaceFlinger> mFlinger;
-        wp<Layer> mLayer;
+        sp<Layer> mLayer;
 
     protected:
         ~LayerCleaner() {
             // destroy client resources
-            mFlinger->onLayerDestroyed(mLayer);
+            mFlinger->removeLayer(mLayer, true);
         }
 
     public:
@@ -618,20 +607,21 @@
               : mFlinger(flinger), mLayer(layer) {}
     };
 
-    virtual void onFirstRef();
-
     friend class impl::SurfaceInterceptor;
 
+    // For unit tests
+    friend class TestableSurfaceFlinger;
+
     void commitTransaction(const State& stateToCommit);
 
     uint32_t getEffectiveUsage(uint32_t usage) const;
 
-    FloatRect computeCrop(const sp<const DisplayDevice>& hw) const;
+    virtual FloatRect computeCrop(const sp<const DisplayDevice>& display) const;
     // Compute the initial crop as specified by parent layers and the
     // SurfaceControl for this layer. Does not include buffer crop from the
     // IGraphicBufferProducer client, as that should not affect child clipping.
     // Returns in screen space.
-    Rect computeInitialCrop(const sp<const DisplayDevice>& hw) const;
+    Rect computeInitialCrop(const sp<const DisplayDevice>& display) const;
 
     // drawing
     void clearWithOpenGL(const RenderArea& renderArea, float r, float g, float b,
@@ -678,7 +668,8 @@
     bool addSyncPoint(const std::shared_ptr<SyncPoint>& point);
 
     void popPendingState(State* stateToCommit);
-    bool applyPendingStates(State* stateToCommit);
+    virtual bool applyPendingStates(State* stateToCommit);
+    virtual uint32_t doTransactionResize(uint32_t flags, Layer::State* stateToCommit);
 
     void clearSyncPoints();
 
@@ -714,7 +705,7 @@
     // -----------------------------------------------------------------------
     bool usingRelativeZ(LayerVector::StateSet stateSet);
 
-    bool mPremultipliedAlpha;
+    bool mPremultipliedAlpha{true};
     String8 mName;
     String8 mTransactionName; // A cached version of "TX - " + mName for systraces
 
@@ -723,16 +714,12 @@
     // these are protected by an external lock
     State mCurrentState;
     State mDrawingState;
-    volatile int32_t mTransactionFlags;
+    std::atomic<uint32_t> mTransactionFlags{0};
 
     // Accessed from main thread and binder threads
     Mutex mPendingStateMutex;
     Vector<State> mPendingStates;
 
-    // thread-safe
-    volatile int32_t mQueuedFrames;
-    volatile int32_t mSidebandStreamChanged; // used like an atomic boolean
-
     // Timestamp history for UIAutomation. Thread safe.
     FrameTracker mFrameTracker;
 
@@ -746,26 +733,21 @@
     TimeStats& mTimeStats = TimeStats::getInstance();
 
     // main thread
-    int mActiveBufferSlot;
     sp<GraphicBuffer> mActiveBuffer;
-    sp<NativeHandle> mSidebandStream;
     ui::Dataspace mCurrentDataSpace = ui::Dataspace::UNKNOWN;
     Rect mCurrentCrop;
-    uint32_t mCurrentTransform;
+    uint32_t mCurrentTransform{0};
     // We encode unset as -1.
-    int32_t mOverrideScalingMode;
-    bool mCurrentOpacity;
-    std::atomic<uint64_t> mCurrentFrameNumber;
-    bool mFrameLatencyNeeded;
-    // Whether filtering is forced on or not
-    bool mFiltering;
+    int32_t mOverrideScalingMode{-1};
+    std::atomic<uint64_t> mCurrentFrameNumber{0};
+    bool mFrameLatencyNeeded{false};
     // Whether filtering is needed b/c of the drawingstate
-    bool mNeedsFiltering;
+    bool mNeedsFiltering{false};
 
-    bool mPendingRemoval = false;
+    bool mRemoved{false};
 
     // page-flip thread (currently main thread)
-    bool mProtectedByApp; // application requires protected path to external sink
+    bool mProtectedByApp{false}; // application requires protected path to external sink
 
     // protected by mLock
     mutable Mutex mLock;
@@ -773,20 +755,14 @@
     const wp<Client> mClientRef;
 
     // This layer can be a cursor on some displays.
-    bool mPotentialCursor;
+    bool mPotentialCursor{false};
 
-    // Local copy of the queued contents of the incoming BufferQueue
-    mutable Mutex mQueueItemLock;
-    Condition mQueueItemCondition;
-    Vector<BufferItem> mQueueItems;
-    std::atomic<uint64_t> mLastFrameNumberReceived;
-    bool mAutoRefresh;
-    bool mFreezeGeometryUpdates;
+    bool mFreezeGeometryUpdates{false};
 
     // Child list about to be committed/used for editing.
-    LayerVector mCurrentChildren;
+    LayerVector mCurrentChildren{LayerVector::StateSet::Current};
     // Child list used for rendering.
-    LayerVector mDrawingChildren;
+    LayerVector mDrawingChildren{LayerVector::StateSet::Drawing};
 
     wp<Layer> mCurrentParent;
     wp<Layer> mDrawingParent;
diff --git a/services/surfaceflinger/LayerBE.cpp b/services/surfaceflinger/LayerBE.cpp
new file mode 100644
index 0000000..c9b7933
--- /dev/null
+++ b/services/surfaceflinger/LayerBE.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_NDEBUG 0
+#undef LOG_TAG
+#define LOG_TAG "LayerBE"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "Layer.h"
+
+#include <android-base/stringprintf.h>
+#include <renderengine/RenderEngine.h>
+
+#include <string>
+
+namespace {
+
+const char* getCompositionName(HWC2::Composition compositionType) {
+    switch (compositionType) {
+        case HWC2::Composition::Invalid:
+            return "Invalid";
+        case HWC2::Composition::Client:
+            return "Client";
+        case HWC2::Composition::Device:
+            return "Device";
+        case HWC2::Composition::SolidColor:
+            return "Solid Color";
+        case HWC2::Composition::Cursor:
+            return "Cursor";
+        case HWC2::Composition::Sideband:
+            return "Sideband";
+    }
+    return "Invalid";
+}
+
+}  // namespace anonymous
+
+namespace android {
+
+LayerBE::LayerBE(Layer* layer, std::string layerName)
+      : mLayer(layer),
+        mMesh(renderengine::Mesh::TRIANGLE_FAN, 4, 2, 2) {
+    compositionInfo.layer = std::make_shared<LayerBE>(*this);
+    compositionInfo.layerName = layerName;
+}
+
+LayerBE::LayerBE(const LayerBE& layer)
+      : mLayer(layer.mLayer),
+        mMesh(renderengine::Mesh::TRIANGLE_FAN, 4, 2, 2) {
+    compositionInfo.layer = layer.compositionInfo.layer;
+    compositionInfo.layerName = layer.mLayer->getName().string();
+}
+
+void LayerBE::onLayerDisplayed(const sp<Fence>& releaseFence) {
+    if (mLayer) {
+        mLayer->onLayerDisplayed(releaseFence);
+    }
+}
+
+void LayerBE::clear(renderengine::RenderEngine& engine) {
+    engine.setupFillWithColor(0, 0, 0, 0);
+    engine.drawMesh(mMesh);
+}
+
+void CompositionInfo::dump(const char* tag) const
+{
+    std::string logString;
+    dump(logString, tag);
+    ALOGV("%s", logString.c_str());
+}
+
+void CompositionInfo::dumpHwc(std::string& result, const char* tag) const {
+    if (tag == nullptr) {
+        result += base::StringPrintf("HWC parameters\n");
+    } else {
+        result += base::StringPrintf("[%s]HWC parameters\n", tag);
+    }
+
+    result += base::StringPrintf("\thwcLayer=%p\n", static_cast<HWC2::Layer*>(&*hwc.hwcLayer));
+    result += base::StringPrintf("\tfence=%p\n", hwc.fence.get());
+    result += base::StringPrintf("\tblendMode=%d\n", hwc.blendMode);
+    result += base::StringPrintf("\ttransform=%d\n", hwc.transform);
+    result += base::StringPrintf("\tz=%d\n", hwc.z);
+    result += base::StringPrintf("\ttype=%d\n", hwc.type);
+    result += base::StringPrintf("\tappId=%d\n", hwc.appId);
+    result += base::StringPrintf("\tdisplayFrame=%4d %4d %4d %4d\n", hwc.displayFrame.left,
+                                 hwc.displayFrame.top, hwc.displayFrame.right,
+                                 hwc.displayFrame.bottom);
+    result += base::StringPrintf("\talpha=%.3f", hwc.alpha);
+    result += base::StringPrintf("\tsourceCrop=%6.1f %6.1f %6.1f %6.1f\n", hwc.sourceCrop.left,
+                                 hwc.sourceCrop.top, hwc.sourceCrop.right, hwc.sourceCrop.bottom);
+
+    {
+        //
+        // Keep a conversion from std::string to String8 and back until Region can use std::string
+        //
+        String8 regionString;
+        hwc.visibleRegion.dump(regionString, "visibleRegion");
+        hwc.surfaceDamage.dump(regionString, "surfaceDamage");
+        result += regionString.string();
+    }
+
+    result += base::StringPrintf("\tcolor transform matrix:\n"
+                                 "\t\t[%f, %f, %f, %f,\n"
+                                 "\t\t %f, %f, %f, %f,\n"
+                                 "\t\t %f, %f, %f, %f,\n"
+                                 "\t\t %f, %f, %f, %f]\n",
+                                 hwc.colorTransform[0][0], hwc.colorTransform[1][0],
+                                 hwc.colorTransform[2][0], hwc.colorTransform[3][0],
+                                 hwc.colorTransform[0][1], hwc.colorTransform[1][1],
+                                 hwc.colorTransform[2][1], hwc.colorTransform[3][1],
+                                 hwc.colorTransform[0][2], hwc.colorTransform[1][2],
+                                 hwc.colorTransform[2][2], hwc.colorTransform[3][2],
+                                 hwc.colorTransform[0][3], hwc.colorTransform[1][3],
+                                 hwc.colorTransform[2][3], hwc.colorTransform[3][3]);
+}
+
+void CompositionInfo::dumpRe(std::string& result, const char* tag) const {
+    if (tag == nullptr) {
+        result += base::StringPrintf("RenderEngine parameters:\n");
+    } else {
+        result += base::StringPrintf("[%s]RenderEngine parameters:\n", tag);
+    }
+
+    result += base::StringPrintf("\tblackoutLayer=%d\n", re.blackoutLayer);
+    result += base::StringPrintf("\tclearArea=%d\n", re.clearArea);
+    result += base::StringPrintf("\tpreMultipliedAlpha=%d\n", re.preMultipliedAlpha);
+    result += base::StringPrintf("\topaque=%d\n", re.opaque);
+    result += base::StringPrintf("\tdisableTexture=%d\n", re.disableTexture);
+    result += base::StringPrintf("\tuseIdentityTransform=%d\n", re.useIdentityTransform);
+}
+
+void CompositionInfo::dump(std::string& result, const char* tag) const
+{
+    if (tag == nullptr) {
+        result += base::StringPrintf("CompositionInfo\n");
+    } else {
+        result += base::StringPrintf("[%s]CompositionInfo\n", tag);
+    }
+    result += base::StringPrintf("\tLayerName: %s\n", layerName.c_str());
+    result += base::StringPrintf("\tCompositionType: %s\n",
+                                 getCompositionName(compositionType));
+    result += base::StringPrintf("\tmBuffer = %p\n", mBuffer.get());
+    result += base::StringPrintf("\tmBufferSlot=%d\n", mBufferSlot);
+    result += base::StringPrintf("\tdisplayFrame=%4d %4d %4d %4d\n", hwc.displayFrame.left,
+                                 hwc.displayFrame.top, hwc.displayFrame.right,
+                                 hwc.displayFrame.bottom);
+    result += base::StringPrintf("\talpha=%f\n", hwc.alpha);
+    result += base::StringPrintf("\tsourceCrop=%6.1f %6.1f %6.1f %6.1f\n", hwc.sourceCrop.left,
+                                 hwc.sourceCrop.top, hwc.sourceCrop.right, hwc.sourceCrop.bottom);
+
+    switch (compositionType) {
+        case HWC2::Composition::Device:
+            dumpHwc(result, tag);
+            break;
+        case HWC2::Composition::Client:
+            dumpRe(result, tag);
+            break;
+        default:
+            break;
+    }
+}
+
+}; // namespace android
diff --git a/services/surfaceflinger/LayerBE.h b/services/surfaceflinger/LayerBE.h
new file mode 100644
index 0000000..d63d16f
--- /dev/null
+++ b/services/surfaceflinger/LayerBE.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <renderengine/Mesh.h>
+#include <renderengine/RenderEngine.h>
+#include <renderengine/Texture.h>
+#include <ui/Region.h>
+
+#include "DisplayHardware/HWComposer.h"
+#include "DisplayHardware/HWComposerBufferCache.h"
+#include "SurfaceFlinger.h"
+
+namespace android {
+
+class LayerBE;
+
+struct CompositionInfo {
+    std::string layerName;
+    HWC2::Composition compositionType = HWC2::Composition::Invalid;
+    bool firstClear = false;
+    sp<GraphicBuffer> mBuffer = nullptr;
+    int mBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
+    std::shared_ptr<LayerBE> layer;
+    struct {
+        std::shared_ptr<HWC2::Layer> hwcLayer;
+        bool skipGeometry = true;
+        int32_t displayId = -1;
+        sp<Fence> fence;
+        HWC2::BlendMode blendMode = HWC2::BlendMode::Invalid;
+        Rect displayFrame;
+        float alpha;
+        FloatRect sourceCrop;
+        HWC2::Transform transform = HWC2::Transform::None;
+        int z;
+        int type;
+        int appId;
+        Region visibleRegion;
+        Region surfaceDamage;
+        sp<NativeHandle> sidebandStream;
+        ui::Dataspace dataspace;
+        hwc_color_t color;
+        bool clearClientTarget = false;
+        bool supportedPerFrameMetadata = false;
+        HdrMetadata hdrMetadata;
+        mat4 colorTransform;
+    } hwc;
+    struct {
+        bool blackoutLayer = false;
+        bool clearArea = false;
+        bool preMultipliedAlpha = false;
+        bool opaque = false;
+        bool disableTexture = false;
+        half4 color;
+        bool useIdentityTransform = false;
+        bool Y410BT2020 = false;
+    } re;
+
+    void dump(const char* tag) const;
+    void dump(std::string& result, const char* tag = nullptr) const;
+    void dumpHwc(std::string& result, const char* tag = nullptr) const;
+    void dumpRe(std::string& result, const char* tag = nullptr) const;
+};
+
+class LayerBE {
+public:
+    friend class Layer;
+    friend class BufferLayer;
+    friend class BufferQueueLayer;
+    friend class BufferStateLayer;
+    friend class ColorLayer;
+    friend class SurfaceFlinger;
+
+    // For unit tests
+    friend class TestableSurfaceFlinger;
+
+    LayerBE(Layer* layer, std::string layerName);
+    explicit LayerBE(const LayerBE& layer);
+
+    void onLayerDisplayed(const sp<Fence>& releaseFence);
+    void clear(renderengine::RenderEngine& renderEngine);
+    renderengine::Mesh& getMesh() { return mMesh; }
+
+    Layer*const mLayer;
+private:
+    // The mesh used to draw the layer in GLES composition mode
+    renderengine::Mesh mMesh;
+
+    // HWC items, accessed from the main thread
+    struct HWCInfo {
+        HWCInfo()
+              : hwc(nullptr),
+                layer(nullptr),
+                forceClientComposition(false),
+                compositionType(HWC2::Composition::Invalid),
+                clearClientTarget(false),
+                transform(HWC2::Transform::None) {}
+
+        HWComposer* hwc;
+        std::shared_ptr<HWC2::Layer> layer;
+        bool forceClientComposition;
+        HWC2::Composition compositionType;
+        bool clearClientTarget;
+        Rect displayFrame;
+        FloatRect sourceCrop;
+        HWComposerBufferCache bufferCache;
+        HWC2::Transform transform;
+    };
+
+
+    // A layer can be attached to multiple displays when operating in mirror mode
+    // (a.k.a: when several displays are attached with equal layerStack). In this
+    // case we need to keep track. In non-mirror mode, a layer will have only one
+    // HWCInfo. This map key is a display layerStack.
+    std::unordered_map<int32_t, HWCInfo> mHwcLayers;
+
+    CompositionInfo compositionInfo;
+};
+
+}; // namespace android
+
diff --git a/services/surfaceflinger/LayerProtoHelper.cpp b/services/surfaceflinger/LayerProtoHelper.cpp
index cc39550..3289e8f 100644
--- a/services/surfaceflinger/LayerProtoHelper.cpp
+++ b/services/surfaceflinger/LayerProtoHelper.cpp
@@ -51,7 +51,8 @@
     colorProto->set_a(color.a);
 }
 
-void LayerProtoHelper::writeToProto(const Transform& transform, TransformProto* transformProto) {
+void LayerProtoHelper::writeToProto(const ui::Transform& transform,
+                                    TransformProto* transformProto) {
     transformProto->set_dsdx(transform[0][0]);
     transformProto->set_dtdx(transform[0][1]);
     transformProto->set_dsdy(transform[1][0]);
diff --git a/services/surfaceflinger/LayerProtoHelper.h b/services/surfaceflinger/LayerProtoHelper.h
index 860da63..6df5aea 100644
--- a/services/surfaceflinger/LayerProtoHelper.h
+++ b/services/surfaceflinger/LayerProtoHelper.h
@@ -16,13 +16,11 @@
 
 #include <layerproto/LayerProtoHeader.h>
 
+#include <math/vec4.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/Rect.h>
 #include <ui/Region.h>
-
-#include <Transform.h>
-
-#include <math/vec4.h>
+#include <ui/Transform.h>
 
 namespace android {
 namespace surfaceflinger {
@@ -32,7 +30,7 @@
     static void writeToProto(const FloatRect& rect, FloatRectProto* rectProto);
     static void writeToProto(const Region& region, RegionProto* regionProto);
     static void writeToProto(const half4 color, ColorProto* colorProto);
-    static void writeToProto(const Transform& transform, TransformProto* transformProto);
+    static void writeToProto(const ui::Transform& transform, TransformProto* transformProto);
     static void writeToProto(const sp<GraphicBuffer>& buffer, ActiveBufferProto* activeBufferProto);
 };
 
diff --git a/services/surfaceflinger/LayerRejecter.cpp b/services/surfaceflinger/LayerRejecter.cpp
index a5f0b98..72abea8 100644
--- a/services/surfaceflinger/LayerRejecter.cpp
+++ b/services/surfaceflinger/LayerRejecter.cpp
@@ -19,8 +19,6 @@
 #include <gui/BufferItem.h>
 #include <system/window.h>
 
-#include "clz.h"
-
 #define DEBUG_RESIZE 0
 
 namespace android {
@@ -31,6 +29,7 @@
                              bool stickySet,
                              const char* name,
                              int32_t overrideScalingMode,
+                             bool transformToDisplayInverse,
                              bool& freezePositionUpdates)
   : mFront(front),
     mCurrent(current),
@@ -38,6 +37,7 @@
     mStickyTransformSet(stickySet),
     mName(name),
     mOverrideScalingMode(overrideScalingMode),
+    mTransformToDisplayInverse(transformToDisplayInverse),
     mFreezeGeometryUpdates(freezePositionUpdates) {}
 
 bool LayerRejecter::reject(const sp<GraphicBuffer>& buf, const BufferItem& item) {
@@ -50,26 +50,34 @@
 
     // check that we received a buffer of the right size
     // (Take the buffer's orientation into account)
-    if (item.mTransform & Transform::ROT_90) {
-        swap(bufWidth, bufHeight);
+    if (item.mTransform & ui::Transform::ROT_90) {
+        std::swap(bufWidth, bufHeight);
+    }
+
+    if (mTransformToDisplayInverse) {
+        uint32_t invTransform = DisplayDevice::getPrimaryDisplayOrientationTransform();
+        if (invTransform & ui::Transform::ROT_90) {
+            std::swap(bufWidth, bufHeight);
+        }
     }
 
     int actualScalingMode = mOverrideScalingMode >= 0 ? mOverrideScalingMode : item.mScalingMode;
     bool isFixedSize = actualScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
-    if (mFront.active != mFront.requested) {
-        if (isFixedSize || (bufWidth == mFront.requested.w && bufHeight == mFront.requested.h)) {
+    if (mFront.active_legacy != mFront.requested_legacy) {
+        if (isFixedSize ||
+            (bufWidth == mFront.requested_legacy.w && bufHeight == mFront.requested_legacy.h)) {
             // Here we pretend the transaction happened by updating the
             // current and drawing states. Drawing state is only accessed
             // in this thread, no need to have it locked
-            mFront.active = mFront.requested;
+            mFront.active_legacy = mFront.requested_legacy;
 
             // We also need to update the current state so that
             // we don't end-up overwriting the drawing state with
             // this stale current state during the next transaction
             //
             // NOTE: We don't need to hold the transaction lock here
-            // because State::active is only accessed from this thread.
-            mCurrent.active = mFront.active;
+            // because State::active_legacy is only accessed from this thread.
+            mCurrent.active_legacy = mFront.active_legacy;
             mCurrent.modified = true;
 
             // recompute visible region
@@ -77,35 +85,32 @@
 
             mFreezeGeometryUpdates = false;
 
-            if (mFront.crop != mFront.requestedCrop) {
-                mFront.crop = mFront.requestedCrop;
-                mCurrent.crop = mFront.requestedCrop;
-                mRecomputeVisibleRegions = true;
-            }
-            if (mFront.finalCrop != mFront.requestedFinalCrop) {
-                mFront.finalCrop = mFront.requestedFinalCrop;
-                mCurrent.finalCrop = mFront.requestedFinalCrop;
+            if (mFront.crop_legacy != mFront.requestedCrop_legacy) {
+                mFront.crop_legacy = mFront.requestedCrop_legacy;
+                mCurrent.crop_legacy = mFront.requestedCrop_legacy;
                 mRecomputeVisibleRegions = true;
             }
         }
 
         ALOGD_IF(DEBUG_RESIZE,
                  "[%s] latchBuffer/reject: buffer (%ux%u, tr=%02x), scalingMode=%d\n"
-                 "  drawing={ active   ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) "
+                 "  drawing={ active_legacy   ={ wh={%4u,%4u} crop_legacy={%4d,%4d,%4d,%4d} "
+                 "(%4d,%4d) "
                  "}\n"
-                 "            requested={ wh={%4u,%4u} }}\n",
-                 mName, bufWidth, bufHeight, item.mTransform, item.mScalingMode, mFront.active.w,
-                 mFront.active.h, mFront.crop.left, mFront.crop.top, mFront.crop.right,
-                 mFront.crop.bottom, mFront.crop.getWidth(), mFront.crop.getHeight(),
-                 mFront.requested.w, mFront.requested.h);
+                 "            requested_legacy={ wh={%4u,%4u} }}\n",
+                 mName, bufWidth, bufHeight, item.mTransform, item.mScalingMode,
+                 mFront.active_legacy.w, mFront.active_legacy.h, mFront.crop_legacy.left,
+                 mFront.crop_legacy.top, mFront.crop_legacy.right, mFront.crop_legacy.bottom,
+                 mFront.crop_legacy.getWidth(), mFront.crop_legacy.getHeight(),
+                 mFront.requested_legacy.w, mFront.requested_legacy.h);
     }
 
     if (!isFixedSize && !mStickyTransformSet) {
-        if (mFront.active.w != bufWidth || mFront.active.h != bufHeight) {
+        if (mFront.active_legacy.w != bufWidth || mFront.active_legacy.h != bufHeight) {
             // reject this buffer
             ALOGE("[%s] rejecting buffer: "
-                  "bufWidth=%d, bufHeight=%d, front.active.{w=%d, h=%d}",
-                  mName, bufWidth, bufHeight, mFront.active.w, mFront.active.h);
+                  "bufWidth=%d, bufHeight=%d, front.active_legacy.{w=%d, h=%d}",
+                  mName, bufWidth, bufHeight, mFront.active_legacy.w, mFront.active_legacy.h);
             return true;
         }
     }
@@ -118,16 +123,17 @@
     // We latch the transparent region here, instead of above where we latch
     // the rest of the geometry because it is only content but not necessarily
     // resize dependent.
-    if (!mFront.activeTransparentRegion.isTriviallyEqual(mFront.requestedTransparentRegion)) {
-        mFront.activeTransparentRegion = mFront.requestedTransparentRegion;
+    if (!mFront.activeTransparentRegion_legacy.isTriviallyEqual(
+                mFront.requestedTransparentRegion_legacy)) {
+        mFront.activeTransparentRegion_legacy = mFront.requestedTransparentRegion_legacy;
 
         // We also need to update the current state so that
         // we don't end-up overwriting the drawing state with
         // this stale current state during the next transaction
         //
         // NOTE: We don't need to hold the transaction lock here
-        // because State::active is only accessed from this thread.
-        mCurrent.activeTransparentRegion = mFront.activeTransparentRegion;
+        // because State::active_legacy is only accessed from this thread.
+        mCurrent.activeTransparentRegion_legacy = mFront.activeTransparentRegion_legacy;
 
         // recompute visible region
         mRecomputeVisibleRegions = true;
diff --git a/services/surfaceflinger/LayerRejecter.h b/services/surfaceflinger/LayerRejecter.h
index 40972aa..63d51de 100644
--- a/services/surfaceflinger/LayerRejecter.h
+++ b/services/surfaceflinger/LayerRejecter.h
@@ -29,6 +29,7 @@
                       bool stickySet,
                       const char *name,
                       int32_t overrideScalingMode,
+                      bool transformToDisplayInverse,
                       bool &freezePositionUpdates);
 
         virtual bool reject(const sp<GraphicBuffer> &buf, const BufferItem &item);
@@ -40,6 +41,7 @@
         bool mStickyTransformSet;
         const char *mName;
         int32_t mOverrideScalingMode;
+        bool mTransformToDisplayInverse;
         bool &mFreezeGeometryUpdates;
     };
 }  // namespace android
diff --git a/services/surfaceflinger/LayerStats.cpp b/services/surfaceflinger/LayerStats.cpp
index 2a67955..c0174ae 100644
--- a/services/surfaceflinger/LayerStats.cpp
+++ b/services/surfaceflinger/LayerStats.cpp
@@ -57,7 +57,7 @@
 }
 
 void LayerStats::traverseLayerTreeStatsLocked(
-        const std::vector<std::unique_ptr<LayerProtoParser::Layer>>& layerTree,
+        const std::vector<LayerProtoParser::Layer*>& layerTree,
         const LayerProtoParser::LayerGlobal& layerGlobal,
         std::vector<std::string>* const outLayerShapeVec) {
     for (const auto& layer : layerTree) {
@@ -82,7 +82,7 @@
         base::StringAppendF(&key, ",%s",
                             destinationSize(layer->hwcFrame.bottom - layer->hwcFrame.top,
                                             layerGlobal.resolution[1], false));
-        base::StringAppendF(&key, ",%s", scaleRatioWH(layer.get()).c_str());
+        base::StringAppendF(&key, ",%s", scaleRatioWH(layer).c_str());
         base::StringAppendF(&key, ",%s", alpha(static_cast<float>(layer->color.a)));
 
         outLayerShapeVec->push_back(key);
@@ -98,7 +98,7 @@
     std::vector<std::string> layerShapeVec;
 
     std::lock_guard<std::mutex> lock(mMutex);
-    traverseLayerTreeStatsLocked(layerTree, layerGlobal, &layerShapeVec);
+    traverseLayerTreeStatsLocked(layerTree.topLevelLayers, layerGlobal, &layerShapeVec);
 
     std::string layerShapeKey =
             base::StringPrintf("%d,%s,%s,%s", static_cast<int32_t>(layerShapeVec.size()),
diff --git a/services/surfaceflinger/LayerStats.h b/services/surfaceflinger/LayerStats.h
index bd17d82..9de9cce 100644
--- a/services/surfaceflinger/LayerStats.h
+++ b/services/surfaceflinger/LayerStats.h
@@ -38,7 +38,7 @@
 private:
     // Traverse layer tree to get all visible layers' stats
     void traverseLayerTreeStatsLocked(
-            const std::vector<std::unique_ptr<LayerProtoParser::Layer>>& layerTree,
+            const std::vector<LayerProtoParser::Layer*>& layerTree,
             const LayerProtoParser::LayerGlobal& layerGlobal,
             std::vector<std::string>* const outLayerShapeVec);
     // Convert layer's top-left position into 8x8 percentage of the display
diff --git a/services/surfaceflinger/MonitoredProducer.cpp b/services/surfaceflinger/MonitoredProducer.cpp
index 389fbd2..06e3d9c 100644
--- a/services/surfaceflinger/MonitoredProducer.cpp
+++ b/services/surfaceflinger/MonitoredProducer.cpp
@@ -14,10 +14,11 @@
  * limitations under the License.
  */
 
-#include "MessageQueue.h"
 #include "MonitoredProducer.h"
-#include "SurfaceFlinger.h"
 #include "Layer.h"
+#include "SurfaceFlinger.h"
+
+#include "Scheduler/MessageQueue.h"
 
 namespace android {
 
diff --git a/services/surfaceflinger/NativeWindowSurface.cpp b/services/surfaceflinger/NativeWindowSurface.cpp
new file mode 100644
index 0000000..3fff928
--- /dev/null
+++ b/services/surfaceflinger/NativeWindowSurface.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "NativeWindowSurface.h"
+
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/Surface.h>
+
+namespace android::surfaceflinger {
+
+NativeWindowSurface::~NativeWindowSurface() = default;
+
+namespace impl {
+
+std::unique_ptr<surfaceflinger::NativeWindowSurface> createNativeWindowSurface(
+        const sp<IGraphicBufferProducer>& producer) {
+    class NativeWindowSurface final : public surfaceflinger::NativeWindowSurface {
+    public:
+        explicit NativeWindowSurface(const sp<IGraphicBufferProducer>& producer)
+              : mSurface(new Surface(producer, /* controlledByApp */ false)) {}
+
+        ~NativeWindowSurface() override = default;
+
+        sp<ANativeWindow> getNativeWindow() const override { return mSurface; }
+
+        void preallocateBuffers() override { mSurface->allocateBuffers(); }
+
+    private:
+        sp<Surface> mSurface;
+    };
+
+    return std::make_unique<NativeWindowSurface>(producer);
+}
+
+} // namespace impl
+} // namespace android::surfaceflinger
diff --git a/services/surfaceflinger/NativeWindowSurface.h b/services/surfaceflinger/NativeWindowSurface.h
new file mode 100644
index 0000000..f34a45a
--- /dev/null
+++ b/services/surfaceflinger/NativeWindowSurface.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <utils/StrongPointer.h>
+
+struct ANativeWindow;
+
+namespace android {
+
+class IGraphicBufferProducer;
+
+namespace surfaceflinger {
+
+// A thin interface to abstract creating instances of Surface (gui/Surface.h) to
+// use as a NativeWindow.
+class NativeWindowSurface {
+public:
+    virtual ~NativeWindowSurface();
+
+    // Gets the NativeWindow to use for the surface.
+    virtual sp<ANativeWindow> getNativeWindow() const = 0;
+
+    // Indicates that the surface should allocate its buffers now.
+    virtual void preallocateBuffers() = 0;
+};
+
+namespace impl {
+
+std::unique_ptr<NativeWindowSurface> createNativeWindowSurface(const sp<IGraphicBufferProducer>&);
+
+} // namespace impl
+} // namespace surfaceflinger
+} // namespace android
diff --git a/services/surfaceflinger/RenderArea.cpp b/services/surfaceflinger/RenderArea.cpp
index 1a8edf3..93759e8 100644
--- a/services/surfaceflinger/RenderArea.cpp
+++ b/services/surfaceflinger/RenderArea.cpp
@@ -1,7 +1,5 @@
 #include "RenderArea.h"
 
-#include <gui/LayerState.h>
-
 namespace android {
 
 float RenderArea::getCaptureFillValue(CaptureFill captureFill) {
@@ -13,37 +11,5 @@
             return 1.0f;
     }
 }
-/*
- * Checks that the requested width and height are valid and updates them to the render area
- * dimensions if they are set to 0
- */
-status_t RenderArea::updateDimensions(int displayRotation) {
-    // get screen geometry
-
-    uint32_t width = getWidth();
-    uint32_t height = getHeight();
-
-    if (mRotationFlags & Transform::ROT_90) {
-        std::swap(width, height);
-    }
-
-    if (displayRotation & DisplayState::eOrientationSwapMask) {
-        std::swap(width, height);
-    }
-
-    if ((mReqWidth > width) || (mReqHeight > height)) {
-        ALOGE("size mismatch (%d, %d) > (%d, %d)", mReqWidth, mReqHeight, width, height);
-        return BAD_VALUE;
-    }
-
-    if (mReqWidth == 0) {
-        mReqWidth = width;
-    }
-    if (mReqHeight == 0) {
-        mReqHeight = height;
-    }
-
-    return NO_ERROR;
-}
 
 } // namespace android
diff --git a/services/surfaceflinger/RenderArea.h b/services/surfaceflinger/RenderArea.h
index 96e4b5f..3c11e73 100644
--- a/services/surfaceflinger/RenderArea.h
+++ b/services/surfaceflinger/RenderArea.h
@@ -1,50 +1,80 @@
 #pragma once
 
-#include <ui/GraphicTypes.h>
-
-#include "Transform.h"
+#include <ui/Transform.h>
 
 #include <functional>
 
 namespace android {
 
+// RenderArea describes a rectangular area that layers can be rendered to.
+//
+// There is a logical render area and a physical render area.  When a layer is
+// rendered to the render area, it is first transformed and clipped to the logical
+// render area.  The transformed and clipped layer is then projected onto the
+// physical render area.
 class RenderArea {
-
 public:
     enum class CaptureFill {CLEAR, OPAQUE};
 
     static float getCaptureFillValue(CaptureFill captureFill);
 
-    RenderArea(uint32_t reqHeight, uint32_t reqWidth, CaptureFill captureFill,
-               ISurfaceComposer::Rotation rotation = ISurfaceComposer::eRotateNone)
-          : mReqHeight(reqHeight), mReqWidth(reqWidth), mCaptureFill(captureFill) {
-        mRotationFlags = Transform::fromRotation(rotation);
-    }
+    RenderArea(uint32_t reqWidth, uint32_t reqHeight, CaptureFill captureFill,
+               ui::Transform::orientation_flags rotation = ui::Transform::ROT_0)
+          : mReqWidth(reqWidth),
+            mReqHeight(reqHeight),
+            mCaptureFill(captureFill),
+            mRotationFlags(rotation) {}
 
     virtual ~RenderArea() = default;
 
-    virtual const Transform& getTransform() const = 0;
-    virtual Rect getBounds() const = 0;
-    virtual int getHeight() const = 0;
-    virtual int getWidth() const = 0;
-    virtual bool isSecure() const = 0;
-    virtual bool needsFiltering() const = 0;
-    virtual Rect getSourceCrop() const = 0;
-
+    // Invoke drawLayers to render layers into the render area.
     virtual void render(std::function<void()> drawLayers) { drawLayers(); }
 
-    int getReqHeight() const { return mReqHeight; };
-    int getReqWidth() const { return mReqWidth; };
-    Transform::orientation_flags getRotationFlags() const { return mRotationFlags; };
-    status_t updateDimensions(int displayRotation);
+    // Returns true if the render area is secure.  A secure layer should be
+    // blacked out / skipped when rendered to an insecure render area.
+    virtual bool isSecure() const = 0;
 
+    // Returns true if the otherwise disabled layer filtering should be
+    // enabled when rendering to this render area.
+    virtual bool needsFiltering() const = 0;
+
+    // Returns the transform to be applied on layers to transform them into
+    // the logical render area.
+    virtual const ui::Transform& getTransform() const = 0;
+
+    // Returns the size of the logical render area.  Layers are clipped to the
+    // logical render area.
+    virtual int getWidth() const = 0;
+    virtual int getHeight() const = 0;
+    virtual Rect getBounds() const = 0;
+
+    // Returns the source crop of the render area.  The source crop defines
+    // how layers are projected from the logical render area onto the physical
+    // render area.  It can be larger than the logical render area.  It can
+    // also be optionally rotated.
+    //
+    // Layers are first clipped to the source crop (in addition to being
+    // clipped to the logical render area already).  The source crop and the
+    // layers are then rotated around the center of the source crop, and
+    // scaled to the physical render area linearly.
+    virtual Rect getSourceCrop() const = 0;
+
+    // Returns the rotation of the source crop and the layers.
+    ui::Transform::orientation_flags getRotationFlags() const { return mRotationFlags; };
+
+    // Returns the size of the physical render area.
+    int getReqWidth() const { return mReqWidth; };
+    int getReqHeight() const { return mReqHeight; };
+
+    // Returns the fill color of the physical render area.  Regions not
+    // covered by any rendered layer should be filled with this color.
     CaptureFill getCaptureFill() const { return mCaptureFill; };
 
 private:
-    uint32_t mReqHeight;
-    uint32_t mReqWidth;
-    Transform::orientation_flags mRotationFlags;
-    CaptureFill mCaptureFill;
+    const uint32_t mReqWidth;
+    const uint32_t mReqHeight;
+    const CaptureFill mCaptureFill;
+    const ui::Transform::orientation_flags mRotationFlags;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Android.bp b/services/surfaceflinger/RenderEngine/Android.bp
new file mode 100644
index 0000000..79145c2
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/Android.bp
@@ -0,0 +1,80 @@
+// TODO(b/112585051) Add to VNDK once moved to libs/
+cc_defaults {
+    name: "renderengine_defaults",
+    cflags: [
+        "-DLOG_TAG=\"RenderEngine\"",
+        "-Wall",
+        "-Werror",
+        "-Wthread-safety",
+        "-Wunused",
+        "-Wunreachable-code",
+    ],
+    cppflags: ["-std=c++1z"],
+}
+
+cc_defaults {
+    name: "librenderengine_defaults",
+    defaults: ["renderengine_defaults"],
+    cflags: [
+        "-DGL_GLEXT_PROTOTYPES",
+        "-DEGL_EGLEXT_PROTOTYPES",
+    ],
+    shared_libs: [
+        "libcutils",
+        "libEGL",
+        "libGLESv1_CM",
+        "libGLESv2",
+        "libgui",
+        "liblog",
+    	"libnativewindow",
+        "libui",
+        "libutils",
+    ],
+    local_include_dirs: ["include"],
+    export_include_dirs: ["include"],
+}
+
+filegroup {
+    name: "librenderengine_sources",
+    srcs: [
+        "Description.cpp",
+        "Mesh.cpp",
+        "RenderEngine.cpp",
+        "Texture.cpp",
+    ],
+}
+
+filegroup {
+    name: "librenderengine_gl_sources",
+    srcs: [
+        "gl/GLES20RenderEngine.cpp",
+        "gl/GLExtensions.cpp",
+        "gl/GLFramebuffer.cpp",
+        "gl/GLImage.cpp",
+        "gl/GLSurface.cpp",
+        "gl/Program.cpp",
+        "gl/ProgramCache.cpp",
+    ],
+}
+
+cc_library_static {
+    name: "librenderengine",
+    defaults: ["librenderengine_defaults"],
+    double_loadable: true,
+
+    clang: true,
+    cflags: [
+        "-fvisibility=hidden",
+        "-Werror=format",
+    ],
+    cppflags: [
+        "-fwhole-program-vtables", // requires ThinLTO
+    ],
+    srcs: [
+        ":librenderengine_sources",
+        ":librenderengine_gl_sources",
+    ],
+    lto: {
+        thin: true,
+    },
+}
diff --git a/services/surfaceflinger/RenderEngine/Description.cpp b/services/surfaceflinger/RenderEngine/Description.cpp
index c218e4d..9696d28 100644
--- a/services/surfaceflinger/RenderEngine/Description.cpp
+++ b/services/surfaceflinger/RenderEngine/Description.cpp
@@ -14,88 +14,43 @@
  * limitations under the License.
  */
 
+#include <renderengine/private/Description.h>
+
 #include <stdint.h>
-#include <string.h>
 
 #include <utils/TypeHelpers.h>
 
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-
-#include "Description.h"
-
 namespace android {
+namespace renderengine {
 
-void Description::setPremultipliedAlpha(bool premultipliedAlpha) {
-    mPremultipliedAlpha = premultipliedAlpha;
-}
-
-void Description::setOpaque(bool opaque) {
-    mOpaque = opaque;
-}
-
-void Description::setTexture(const Texture& texture) {
-    mTexture = texture;
-    mTextureEnabled = true;
-}
-
-void Description::disableTexture() {
-    mTextureEnabled = false;
-}
-
-void Description::setColor(const half4& color) {
-    mColor = color;
-}
-
-void Description::setProjectionMatrix(const mat4& mtx) {
-    mProjectionMatrix = mtx;
-}
-
-void Description::setColorMatrix(const mat4& mtx) {
-    mColorMatrix = mtx;
-}
-
-void Description::setInputTransformMatrix(const mat3& matrix) {
-    mInputTransformMatrix = matrix;
-}
-
-void Description::setOutputTransformMatrix(const mat4& matrix) {
-    mOutputTransformMatrix = matrix;
+Description::TransferFunction Description::dataSpaceToTransferFunction(ui::Dataspace dataSpace) {
+    ui::Dataspace transfer = static_cast<ui::Dataspace>(dataSpace & ui::Dataspace::TRANSFER_MASK);
+    switch (transfer) {
+        case ui::Dataspace::TRANSFER_ST2084:
+            return Description::TransferFunction::ST2084;
+        case ui::Dataspace::TRANSFER_HLG:
+            return Description::TransferFunction::HLG;
+        case ui::Dataspace::TRANSFER_LINEAR:
+            return Description::TransferFunction::LINEAR;
+        default:
+            return Description::TransferFunction::SRGB;
+    }
 }
 
 bool Description::hasInputTransformMatrix() const {
-    const mat3 identity;
-    return mInputTransformMatrix != identity;
+    const mat4 identity;
+    return inputTransformMatrix != identity;
 }
 
 bool Description::hasOutputTransformMatrix() const {
     const mat4 identity;
-    return mOutputTransformMatrix != identity;
+    return outputTransformMatrix != identity;
 }
 
 bool Description::hasColorMatrix() const {
     const mat4 identity;
-    return mColorMatrix != identity;
+    return colorMatrix != identity;
 }
 
-const mat4& Description::getColorMatrix() const {
-    return mColorMatrix;
-}
-
-void Description::setY410BT2020(bool enable) {
-    mY410BT2020 = enable;
-}
-
-void Description::setInputTransferFunction(TransferFunction transferFunction) {
-    mInputTransferFunction = transferFunction;
-}
-
-void Description::setOutputTransferFunction(TransferFunction transferFunction) {
-    mOutputTransferFunction = transferFunction;
-}
-
-void Description::setDisplayMaxLuminance(const float maxLuminance) {
-    mDisplayMaxLuminance = maxLuminance;
-}
-
-} /* namespace android */
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Description.h b/services/surfaceflinger/RenderEngine/Description.h
deleted file mode 100644
index 6ebb340..0000000
--- a/services/surfaceflinger/RenderEngine/Description.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <GLES2/gl2.h>
-#include "Texture.h"
-
-#ifndef SF_RENDER_ENGINE_DESCRIPTION_H_
-#define SF_RENDER_ENGINE_DESCRIPTION_H_
-
-namespace android {
-
-class Program;
-
-/*
- * This holds the state of the rendering engine. This class is used
- * to generate a corresponding GLSL program and set the appropriate
- * uniform.
- *
- * Program and ProgramCache are friends and access the state directly
- */
-class Description {
-public:
-    Description() = default;
-    ~Description() = default;
-
-    void setPremultipliedAlpha(bool premultipliedAlpha);
-    void setOpaque(bool opaque);
-    void setTexture(const Texture& texture);
-    void disableTexture();
-    void setColor(const half4& color);
-    void setProjectionMatrix(const mat4& mtx);
-    void setColorMatrix(const mat4& mtx);
-    void setInputTransformMatrix(const mat3& matrix);
-    void setOutputTransformMatrix(const mat4& matrix);
-    bool hasInputTransformMatrix() const;
-    bool hasOutputTransformMatrix() const;
-    bool hasColorMatrix() const;
-    const mat4& getColorMatrix() const;
-
-    void setY410BT2020(bool enable);
-
-    enum class TransferFunction : int {
-        LINEAR,
-        SRGB,
-        ST2084,
-        HLG,  // Hybrid Log-Gamma for HDR.
-    };
-    void setInputTransferFunction(TransferFunction transferFunction);
-    void setOutputTransferFunction(TransferFunction transferFunction);
-    void setDisplayMaxLuminance(const float maxLuminance);
-
-private:
-    friend class Program;
-    friend class ProgramCache;
-
-    // whether textures are premultiplied
-    bool mPremultipliedAlpha = false;
-    // whether this layer is marked as opaque
-    bool mOpaque = true;
-
-    // Texture this layer uses
-    Texture mTexture;
-    bool mTextureEnabled = false;
-
-    // color used when texturing is disabled or when setting alpha.
-    half4 mColor;
-
-    // true if the sampled pixel values are in Y410/BT2020 rather than RGBA
-    bool mY410BT2020 = false;
-
-    // transfer functions for the input/output
-    TransferFunction mInputTransferFunction = TransferFunction::LINEAR;
-    TransferFunction mOutputTransferFunction = TransferFunction::LINEAR;
-
-    float mDisplayMaxLuminance;
-
-    // projection matrix
-    mat4 mProjectionMatrix;
-    mat4 mColorMatrix;
-    mat3 mInputTransformMatrix;
-    mat4 mOutputTransformMatrix;
-};
-
-} /* namespace android */
-
-#endif /* SF_RENDER_ENGINE_DESCRIPTION_H_ */
diff --git a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
deleted file mode 100644
index 744a70c..0000000
--- a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.cpp
+++ /dev/null
@@ -1,477 +0,0 @@
-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-//#define LOG_NDEBUG 0
-#undef LOG_TAG
-#define LOG_TAG "RenderEngine"
-#define ATRACE_TAG ATRACE_TAG_GRAPHICS
-
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-
-#include <ui/ColorSpace.h>
-#include <ui/DebugUtils.h>
-#include <ui/Rect.h>
-
-#include <utils/String8.h>
-#include <utils/Trace.h>
-
-#include <cutils/compiler.h>
-#include <gui/ISurfaceComposer.h>
-#include <math.h>
-
-#include "Description.h"
-#include "GLES20RenderEngine.h"
-#include "Mesh.h"
-#include "Program.h"
-#include "ProgramCache.h"
-#include "Texture.h"
-
-#include <fstream>
-#include <sstream>
-
-// ---------------------------------------------------------------------------
-bool checkGlError(const char* op, int lineNumber) {
-    bool errorFound = false;
-    GLint error = glGetError();
-    while (error != GL_NO_ERROR) {
-        errorFound = true;
-        error = glGetError();
-        ALOGV("after %s() (line # %d) glError (0x%x)\n", op, lineNumber, error);
-    }
-    return errorFound;
-}
-
-static constexpr bool outputDebugPPMs = false;
-
-void writePPM(const char* basename, GLuint width, GLuint height) {
-    ALOGV("writePPM #%s: %d x %d", basename, width, height);
-
-    std::vector<GLubyte> pixels(width * height * 4);
-    std::vector<GLubyte> outBuffer(width * height * 3);
-
-    // TODO(courtneygo): We can now have float formats, need
-    // to remove this code or update to support.
-    // Make returned pixels fit in uint32_t, one byte per component
-    glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
-    if (checkGlError(__FUNCTION__, __LINE__)) {
-        return;
-    }
-
-    std::string filename(basename);
-    filename.append(".ppm");
-    std::ofstream file(filename.c_str(), std::ios::binary);
-    if (!file.is_open()) {
-        ALOGE("Unable to open file: %s", filename.c_str());
-        ALOGE("You may need to do: \"adb shell setenforce 0\" to enable "
-              "surfaceflinger to write debug images");
-        return;
-    }
-
-    file << "P6\n";
-    file << width << "\n";
-    file << height << "\n";
-    file << 255 << "\n";
-
-    auto ptr = reinterpret_cast<char*>(pixels.data());
-    auto outPtr = reinterpret_cast<char*>(outBuffer.data());
-    for (int y = height - 1; y >= 0; y--) {
-        char* data = ptr + y * width * sizeof(uint32_t);
-
-        for (GLuint x = 0; x < width; x++) {
-            // Only copy R, G and B components
-            outPtr[0] = data[0];
-            outPtr[1] = data[1];
-            outPtr[2] = data[2];
-            data += sizeof(uint32_t);
-            outPtr += 3;
-        }
-    }
-    file.write(reinterpret_cast<char*>(outBuffer.data()), outBuffer.size());
-}
-
-// ---------------------------------------------------------------------------
-namespace android {
-namespace RE {
-namespace impl {
-// ---------------------------------------------------------------------------
-
-using ui::Dataspace;
-
-GLES20RenderEngine::GLES20RenderEngine(uint32_t featureFlags)
-      : RenderEngine(featureFlags),
-        mVpWidth(0),
-        mVpHeight(0),
-        mPlatformHasWideColor((featureFlags & WIDE_COLOR_SUPPORT) != 0) {
-    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
-    glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
-
-    glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
-    glPixelStorei(GL_PACK_ALIGNMENT, 4);
-
-    const uint16_t protTexData[] = {0};
-    glGenTextures(1, &mProtectedTexName);
-    glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
-
-    // mColorBlindnessCorrection = M;
-
-    if (mPlatformHasWideColor) {
-        ColorSpace srgb(ColorSpace::sRGB());
-        ColorSpace displayP3(ColorSpace::DisplayP3());
-        ColorSpace bt2020(ColorSpace::BT2020());
-
-        // Compute sRGB to Display P3 transform matrix.
-        // NOTE: For now, we are limiting output wide color space support to
-        // Display-P3 only.
-        mSrgbToDisplayP3 = mat4(ColorSpaceConnector(srgb, displayP3).getTransform());
-
-        // Compute Display P3 to sRGB transform matrix.
-        mDisplayP3ToSrgb = mat4(ColorSpaceConnector(displayP3, srgb).getTransform());
-
-        // no chromatic adaptation needed since all color spaces use D65 for their white points.
-        mSrgbToXyz = srgb.getRGBtoXYZ();
-        mDisplayP3ToXyz = displayP3.getRGBtoXYZ();
-        mBt2020ToXyz = bt2020.getRGBtoXYZ();
-        mXyzToSrgb = mat4(srgb.getXYZtoRGB());
-        mXyzToDisplayP3 = mat4(displayP3.getXYZtoRGB());
-        mXyzToBt2020 = mat4(bt2020.getXYZtoRGB());
-    }
-}
-
-GLES20RenderEngine::~GLES20RenderEngine() {}
-
-size_t GLES20RenderEngine::getMaxTextureSize() const {
-    return mMaxTextureSize;
-}
-
-size_t GLES20RenderEngine::getMaxViewportDims() const {
-    return mMaxViewportDims[0] < mMaxViewportDims[1] ? mMaxViewportDims[0] : mMaxViewportDims[1];
-}
-
-void GLES20RenderEngine::setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
-                                                  size_t hwh, bool yswap,
-                                                  Transform::orientation_flags rotation) {
-    int32_t l = sourceCrop.left;
-    int32_t r = sourceCrop.right;
-
-    // In GL, (0, 0) is the bottom-left corner, so flip y coordinates
-    int32_t t = hwh - sourceCrop.top;
-    int32_t b = hwh - sourceCrop.bottom;
-
-    mat4 m;
-    if (yswap) {
-        m = mat4::ortho(l, r, t, b, 0, 1);
-    } else {
-        m = mat4::ortho(l, r, b, t, 0, 1);
-    }
-
-    // Apply custom rotation to the projection.
-    float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f;
-    switch (rotation) {
-        case Transform::ROT_0:
-            break;
-        case Transform::ROT_90:
-            m = mat4::rotate(rot90InRadians, vec3(0, 0, 1)) * m;
-            break;
-        case Transform::ROT_180:
-            m = mat4::rotate(rot90InRadians * 2.0f, vec3(0, 0, 1)) * m;
-            break;
-        case Transform::ROT_270:
-            m = mat4::rotate(rot90InRadians * 3.0f, vec3(0, 0, 1)) * m;
-            break;
-        default:
-            break;
-    }
-
-    glViewport(0, 0, vpw, vph);
-    mState.setProjectionMatrix(m);
-    mVpWidth = vpw;
-    mVpHeight = vph;
-}
-
-void GLES20RenderEngine::setupLayerBlending(bool premultipliedAlpha, bool opaque,
-                                            bool disableTexture, const half4& color) {
-    mState.setPremultipliedAlpha(premultipliedAlpha);
-    mState.setOpaque(opaque);
-    mState.setColor(color);
-
-    if (disableTexture) {
-        mState.disableTexture();
-    }
-
-    if (color.a < 1.0f || !opaque) {
-        glEnable(GL_BLEND);
-        glBlendFunc(premultipliedAlpha ? GL_ONE : GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    } else {
-        glDisable(GL_BLEND);
-    }
-}
-
-void GLES20RenderEngine::setSourceY410BT2020(bool enable) {
-    mState.setY410BT2020(enable);
-}
-
-void GLES20RenderEngine::setSourceDataSpace(Dataspace source) {
-    mDataSpace = source;
-}
-
-void GLES20RenderEngine::setOutputDataSpace(Dataspace dataspace) {
-    mOutputDataSpace = dataspace;
-}
-
-void GLES20RenderEngine::setDisplayMaxLuminance(const float maxLuminance) {
-    mState.setDisplayMaxLuminance(maxLuminance);
-}
-
-void GLES20RenderEngine::setupLayerTexturing(const Texture& texture) {
-    GLuint target = texture.getTextureTarget();
-    glBindTexture(target, texture.getTextureName());
-    GLenum filter = GL_NEAREST;
-    if (texture.getFiltering()) {
-        filter = GL_LINEAR;
-    }
-    glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glTexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
-    glTexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
-
-    mState.setTexture(texture);
-}
-
-void GLES20RenderEngine::setupLayerBlackedOut() {
-    glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
-    Texture texture(Texture::TEXTURE_2D, mProtectedTexName);
-    texture.setDimensions(1, 1); // FIXME: we should get that from somewhere
-    mState.setTexture(texture);
-}
-
-void GLES20RenderEngine::setupColorTransform(const mat4& colorTransform) {
-    mState.setColorMatrix(colorTransform);
-}
-
-void GLES20RenderEngine::disableTexturing() {
-    mState.disableTexture();
-}
-
-void GLES20RenderEngine::disableBlending() {
-    glDisable(GL_BLEND);
-}
-
-void GLES20RenderEngine::bindImageAsFramebuffer(EGLImageKHR image, uint32_t* texName,
-                                                uint32_t* fbName, uint32_t* status) {
-    GLuint tname, name;
-    // turn our EGLImage into a texture
-    glGenTextures(1, &tname);
-    glBindTexture(GL_TEXTURE_2D, tname);
-    glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
-
-    // create a Framebuffer Object to render into
-    glGenFramebuffers(1, &name);
-    glBindFramebuffer(GL_FRAMEBUFFER, name);
-    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tname, 0);
-
-    *status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
-    *texName = tname;
-    *fbName = name;
-}
-
-void GLES20RenderEngine::unbindFramebuffer(uint32_t texName, uint32_t fbName) {
-    glBindFramebuffer(GL_FRAMEBUFFER, 0);
-    glDeleteFramebuffers(1, &fbName);
-    glDeleteTextures(1, &texName);
-}
-
-void GLES20RenderEngine::setupFillWithColor(float r, float g, float b, float a) {
-    mState.setPremultipliedAlpha(true);
-    mState.setOpaque(false);
-    mState.setColor(half4(r, g, b, a));
-    mState.disableTexture();
-    glDisable(GL_BLEND);
-}
-
-void GLES20RenderEngine::drawMesh(const Mesh& mesh) {
-    ATRACE_CALL();
-    if (mesh.getTexCoordsSize()) {
-        glEnableVertexAttribArray(Program::texCoords);
-        glVertexAttribPointer(Program::texCoords, mesh.getTexCoordsSize(), GL_FLOAT, GL_FALSE,
-                              mesh.getByteStride(), mesh.getTexCoords());
-    }
-
-    glVertexAttribPointer(Program::position, mesh.getVertexSize(), GL_FLOAT, GL_FALSE,
-                          mesh.getByteStride(), mesh.getPositions());
-
-    // By default, DISPLAY_P3 is the only supported wide color output. However,
-    // when HDR content is present, hardware composer may be able to handle
-    // BT2020 data space, in that case, the output data space is set to be
-    // BT2020_HLG or BT2020_PQ respectively. In GPU fall back we need
-    // to respect this and convert non-HDR content to HDR format.
-    if (mPlatformHasWideColor) {
-        Description wideColorState = mState;
-        Dataspace inputStandard = static_cast<Dataspace>(mDataSpace & Dataspace::STANDARD_MASK);
-        Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
-        Dataspace outputStandard = static_cast<Dataspace>(mOutputDataSpace &
-                                                          Dataspace::STANDARD_MASK);
-        Dataspace outputTransfer = static_cast<Dataspace>(mOutputDataSpace &
-                                                          Dataspace::TRANSFER_MASK);
-        bool needsXYZConversion = needsXYZTransformMatrix();
-
-        if (needsXYZConversion) {
-            // The supported input color spaces are standard RGB, Display P3 and BT2020.
-            switch (inputStandard) {
-                case Dataspace::STANDARD_DCI_P3:
-                    wideColorState.setInputTransformMatrix(mDisplayP3ToXyz);
-                    break;
-                case Dataspace::STANDARD_BT2020:
-                    wideColorState.setInputTransformMatrix(mBt2020ToXyz);
-                    break;
-                default:
-                    wideColorState.setInputTransformMatrix(mSrgbToXyz);
-                    break;
-            }
-
-            // The supported output color spaces are BT2020, Display P3 and standard RGB.
-            switch (outputStandard) {
-                case Dataspace::STANDARD_BT2020:
-                    wideColorState.setOutputTransformMatrix(mXyzToBt2020);
-                    break;
-                case Dataspace::STANDARD_DCI_P3:
-                    wideColorState.setOutputTransformMatrix(mXyzToDisplayP3);
-                    break;
-                default:
-                    wideColorState.setOutputTransformMatrix(mXyzToSrgb);
-                    break;
-            }
-        } else if (inputStandard != outputStandard) {
-            // At this point, the input data space and output data space could be both
-            // HDR data spaces, but they match each other, we do nothing in this case.
-            // In addition to the case above, the input data space could be
-            // - scRGB linear
-            // - scRGB non-linear
-            // - sRGB
-            // - Display P3
-            // The output data spaces could be
-            // - sRGB
-            // - Display P3
-            if (outputStandard == Dataspace::STANDARD_BT709) {
-                wideColorState.setOutputTransformMatrix(mDisplayP3ToSrgb);
-            } else if (outputStandard == Dataspace::STANDARD_DCI_P3) {
-                wideColorState.setOutputTransformMatrix(mSrgbToDisplayP3);
-            }
-        }
-
-        // we need to convert the RGB value to linear space and convert it back when:
-        // - there is a color matrix that is not an identity matrix, or
-        // - there is an output transform matrix that is not an identity matrix, or
-        // - the input transfer function doesn't match the output transfer function.
-        if (wideColorState.hasColorMatrix() || wideColorState.hasOutputTransformMatrix() ||
-            inputTransfer != outputTransfer) {
-            switch (inputTransfer) {
-                case Dataspace::TRANSFER_ST2084:
-                    wideColorState.setInputTransferFunction(Description::TransferFunction::ST2084);
-                    break;
-                case Dataspace::TRANSFER_HLG:
-                    wideColorState.setInputTransferFunction(Description::TransferFunction::HLG);
-                    break;
-                case Dataspace::TRANSFER_LINEAR:
-                    wideColorState.setInputTransferFunction(Description::TransferFunction::LINEAR);
-                    break;
-                default:
-                    wideColorState.setInputTransferFunction(Description::TransferFunction::SRGB);
-                    break;
-            }
-
-            switch (outputTransfer) {
-                case Dataspace::TRANSFER_ST2084:
-                    wideColorState.setOutputTransferFunction(Description::TransferFunction::ST2084);
-                    break;
-                case Dataspace::TRANSFER_HLG:
-                    wideColorState.setOutputTransferFunction(Description::TransferFunction::HLG);
-                    break;
-                default:
-                    wideColorState.setOutputTransferFunction(Description::TransferFunction::SRGB);
-                    break;
-            }
-        }
-
-        ProgramCache::getInstance().useProgram(wideColorState);
-
-        glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
-
-        if (outputDebugPPMs) {
-            static uint64_t wideColorFrameCount = 0;
-            std::ostringstream out;
-            out << "/data/texture_out" << wideColorFrameCount++;
-            writePPM(out.str().c_str(), mVpWidth, mVpHeight);
-        }
-    } else {
-        ProgramCache::getInstance().useProgram(mState);
-
-        glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
-    }
-
-    if (mesh.getTexCoordsSize()) {
-        glDisableVertexAttribArray(Program::texCoords);
-    }
-}
-
-void GLES20RenderEngine::dump(String8& result) {
-    RenderEngine::dump(result);
-    result.appendFormat("RenderEngine last dataspace conversion: (%s) to (%s)\n",
-                        dataspaceDetails(static_cast<android_dataspace>(mDataSpace)).c_str(),
-                        dataspaceDetails(static_cast<android_dataspace>(mOutputDataSpace)).c_str());
-}
-
-bool GLES20RenderEngine::isHdrDataSpace(const Dataspace dataSpace) const {
-    const Dataspace standard = static_cast<Dataspace>(dataSpace & Dataspace::STANDARD_MASK);
-    const Dataspace transfer = static_cast<Dataspace>(dataSpace & Dataspace::TRANSFER_MASK);
-    return standard == Dataspace::STANDARD_BT2020 &&
-        (transfer == Dataspace::TRANSFER_ST2084 || transfer == Dataspace::TRANSFER_HLG);
-}
-
-// For convenience, we want to convert the input color space to XYZ color space first,
-// and then convert from XYZ color space to output color space when
-// - SDR and HDR contents are mixed, either SDR content will be converted to HDR or
-//   HDR content will be tone-mapped to SDR; Or,
-// - there are HDR PQ and HLG contents presented at the same time, where we want to convert
-//   HLG content to PQ content.
-// In either case above, we need to operate the Y value in XYZ color space. Thus, when either
-// input data space or output data space is HDR data space, and the input transfer function
-// doesn't match the output transfer function, we would enable an intermediate transfrom to
-// XYZ color space.
-bool GLES20RenderEngine::needsXYZTransformMatrix() const {
-    const bool isInputHdrDataSpace = isHdrDataSpace(mDataSpace);
-    const bool isOutputHdrDataSpace = isHdrDataSpace(mOutputDataSpace);
-    const Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
-    const Dataspace outputTransfer = static_cast<Dataspace>(mOutputDataSpace &
-                                                            Dataspace::TRANSFER_MASK);
-
-    return (isInputHdrDataSpace || isOutputHdrDataSpace) && inputTransfer != outputTransfer;
-}
-
-// ---------------------------------------------------------------------------
-} // namespace impl
-} // namespace RE
-} // namespace android
-// ---------------------------------------------------------------------------
-
-#if defined(__gl_h_)
-#error "don't include gl/gl.h in this file"
-#endif
diff --git a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h b/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h
deleted file mode 100644
index cc8eb1d..0000000
--- a/services/surfaceflinger/RenderEngine/GLES20RenderEngine.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef SF_GLES20RENDERENGINE_H_
-#define SF_GLES20RENDERENGINE_H_
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <GLES2/gl2.h>
-#include <Transform.h>
-
-#include "Description.h"
-#include "ProgramCache.h"
-#include "RenderEngine.h"
-
-// ---------------------------------------------------------------------------
-namespace android {
-// ---------------------------------------------------------------------------
-
-class String8;
-class Mesh;
-class Texture;
-
-namespace RE {
-namespace impl {
-
-class GLES20RenderEngine : public RenderEngine {
-    GLuint mProtectedTexName;
-    GLint mMaxViewportDims[2];
-    GLint mMaxTextureSize;
-    GLuint mVpWidth;
-    GLuint mVpHeight;
-
-    struct Group {
-        GLuint texture;
-        GLuint fbo;
-        GLuint width;
-        GLuint height;
-        mat4 colorTransform;
-    };
-
-    Description mState;
-    Vector<Group> mGroupStack;
-
-    virtual void bindImageAsFramebuffer(EGLImageKHR image, uint32_t* texName, uint32_t* fbName,
-                                        uint32_t* status);
-    virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName);
-
-public:
-    GLES20RenderEngine(uint32_t featureFlags); // See RenderEngine::FeatureFlag
-    virtual ~GLES20RenderEngine();
-
-protected:
-    virtual void dump(String8& result);
-    virtual void setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop, size_t hwh,
-                                          bool yswap, Transform::orientation_flags rotation);
-    virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
-                                    const half4& color) override;
-
-    // Color management related functions and state
-    void setSourceY410BT2020(bool enable) override;
-    void setSourceDataSpace(ui::Dataspace source) override;
-    void setOutputDataSpace(ui::Dataspace dataspace) override;
-    void setDisplayMaxLuminance(const float maxLuminance) override;
-
-    virtual void setupLayerTexturing(const Texture& texture);
-    virtual void setupLayerBlackedOut();
-    virtual void setupFillWithColor(float r, float g, float b, float a);
-    virtual void setupColorTransform(const mat4& colorTransform);
-    virtual void disableTexturing();
-    virtual void disableBlending();
-
-    virtual void drawMesh(const Mesh& mesh);
-
-    virtual size_t getMaxTextureSize() const;
-    virtual size_t getMaxViewportDims() const;
-
-    // Current dataspace of layer being rendered
-    ui::Dataspace mDataSpace = ui::Dataspace::UNKNOWN;
-
-    // Current output dataspace of the render engine
-    ui::Dataspace mOutputDataSpace = ui::Dataspace::UNKNOWN;
-
-    // Currently only supporting sRGB, BT2020 and DisplayP3 color spaces
-    const bool mPlatformHasWideColor = false;
-    mat4 mSrgbToDisplayP3;
-    mat4 mDisplayP3ToSrgb;
-    mat3 mSrgbToXyz;
-    mat3 mBt2020ToXyz;
-    mat3 mDisplayP3ToXyz;
-    mat4 mXyzToSrgb;
-    mat4 mXyzToDisplayP3;
-    mat4 mXyzToBt2020;
-
-private:
-    // A data space is considered HDR data space if it has BT2020 color space
-    // with PQ or HLG transfer function.
-    bool isHdrDataSpace(const ui::Dataspace dataSpace) const;
-    bool needsXYZTransformMatrix() const;
-};
-
-// ---------------------------------------------------------------------------
-} // namespace impl
-} // namespace RE
-} // namespace android
-// ---------------------------------------------------------------------------
-
-#endif /* SF_GLES20RENDERENGINE_H_ */
diff --git a/services/surfaceflinger/RenderEngine/Image.h b/services/surfaceflinger/RenderEngine/Image.h
deleted file mode 100644
index 1ae7e09..0000000
--- a/services/surfaceflinger/RenderEngine/Image.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <cstdint>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-struct ANativeWindowBuffer;
-
-namespace android {
-namespace RE {
-
-class Image {
-public:
-    virtual ~Image() = 0;
-    virtual bool setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected,
-                                       int32_t cropWidth, int32_t cropHeight) = 0;
-};
-
-namespace impl {
-
-class RenderEngine;
-
-class Image : public RE::Image {
-public:
-    explicit Image(const RenderEngine& engine);
-    ~Image() override;
-
-    Image(const Image&) = delete;
-    Image& operator=(const Image&) = delete;
-
-    bool setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected, int32_t cropWidth,
-                               int32_t cropHeight) override;
-
-private:
-    // methods internal to RenderEngine
-    friend class RenderEngine;
-    EGLSurface getEGLImage() const { return mEGLImage; }
-
-    EGLDisplay mEGLDisplay;
-    EGLImageKHR mEGLImage = EGL_NO_IMAGE_KHR;
-};
-
-} // namespace impl
-} // namespace RE
-} // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Mesh.cpp b/services/surfaceflinger/RenderEngine/Mesh.cpp
index 6a62b1d..5a3c2c8 100644
--- a/services/surfaceflinger/RenderEngine/Mesh.cpp
+++ b/services/surfaceflinger/RenderEngine/Mesh.cpp
@@ -14,11 +14,12 @@
  * limitations under the License.
  */
 
-#include "Mesh.h"
+#include <renderengine/Mesh.h>
 
 #include <utils/Log.h>
 
 namespace android {
+namespace renderengine {
 
 Mesh::Mesh(Primitive primitive, size_t vertexCount, size_t vertexSize, size_t texCoordSize)
       : mVertexCount(vertexCount),
@@ -94,4 +95,5 @@
     return mStride;
 }
 
-} /* namespace android */
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.cpp b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
index d745770..3b54873 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
@@ -14,588 +14,44 @@
  * limitations under the License.
  */
 
+#include <renderengine/RenderEngine.h>
+
+#include <cutils/properties.h>
 #include <log/log.h>
-#include <ui/Rect.h>
-#include <ui/Region.h>
+#include <private/gui/SyncFeatures.h>
+#include "gl/GLES20RenderEngine.h"
 
-#include "GLES20RenderEngine.h"
-#include "GLExtensions.h"
-#include "Image.h"
-#include "Mesh.h"
-#include "RenderEngine.h"
-
-#include <SurfaceFlinger.h>
-#include <vector>
-
-#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
-#include <configstore/Utils.h>
-
-using namespace android::hardware::configstore;
-using namespace android::hardware::configstore::V1_0;
-
-extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
-
-// ---------------------------------------------------------------------------
 namespace android {
-namespace RE {
-// ---------------------------------------------------------------------------
+namespace renderengine {
+
+std::unique_ptr<impl::RenderEngine> RenderEngine::create(int hwcFormat, uint32_t featureFlags) {
+    char prop[PROPERTY_VALUE_MAX];
+    property_get(PROPERTY_DEBUG_RENDERENGINE_BACKEND, prop, "gles");
+    if (strcmp(prop, "gles") == 0) {
+        ALOGD("RenderEngine GLES Backend");
+        return renderengine::gl::GLES20RenderEngine::create(hwcFormat, featureFlags);
+    }
+    ALOGE("UNKNOWN BackendType: %s, create GLES RenderEngine.", prop);
+    return renderengine::gl::GLES20RenderEngine::create(hwcFormat, featureFlags);
+}
 
 RenderEngine::~RenderEngine() = default;
 
 namespace impl {
 
-std::unique_ptr<RenderEngine> RenderEngine::create(int hwcFormat, uint32_t featureFlags) {
-    // initialize EGL for the default display
-    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-    if (!eglInitialize(display, nullptr, nullptr)) {
-        LOG_ALWAYS_FATAL("failed to initialize EGL");
-    }
-
-    GLExtensions& extensions = GLExtensions::getInstance();
-    extensions.initWithEGLStrings(eglQueryStringImplementationANDROID(display, EGL_VERSION),
-                                  eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS));
-
-    // The code assumes that ES2 or later is available if this extension is
-    // supported.
-    EGLConfig config = EGL_NO_CONFIG;
-    if (!extensions.hasNoConfigContext()) {
-        config = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
-    }
-
-    EGLint renderableType = 0;
-    if (config == EGL_NO_CONFIG) {
-        renderableType = EGL_OPENGL_ES2_BIT;
-    } else if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
-        LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
-    }
-    EGLint contextClientVersion = 0;
-    if (renderableType & EGL_OPENGL_ES2_BIT) {
-        contextClientVersion = 2;
-    } else if (renderableType & EGL_OPENGL_ES_BIT) {
-        contextClientVersion = 1;
-    } else {
-        LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
-    }
-
-    std::vector<EGLint> contextAttributes;
-    contextAttributes.reserve(6);
-    contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION);
-    contextAttributes.push_back(contextClientVersion);
-    bool useContextPriority = overrideUseContextPriorityFromConfig(extensions.hasContextPriority());
-    if (useContextPriority) {
-        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
-        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
-    }
-    contextAttributes.push_back(EGL_NONE);
-
-    EGLContext ctxt = eglCreateContext(display, config, nullptr, contextAttributes.data());
-
-    // if can't create a GL context, we can only abort.
-    LOG_ALWAYS_FATAL_IF(ctxt == EGL_NO_CONTEXT, "EGLContext creation failed");
-
-    // now figure out what version of GL did we actually get
-    // NOTE: a dummy surface is not needed if KHR_create_context is supported
-
-    EGLConfig dummyConfig = config;
-    if (dummyConfig == EGL_NO_CONFIG) {
-        dummyConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
-    }
-    EGLint attribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE};
-    EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, attribs);
-    LOG_ALWAYS_FATAL_IF(dummy == EGL_NO_SURFACE, "can't create dummy pbuffer");
-    EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
-    LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
-
-    extensions.initWithGLStrings(glGetString(GL_VENDOR), glGetString(GL_RENDERER),
-                                 glGetString(GL_VERSION), glGetString(GL_EXTENSIONS));
-
-    GlesVersion version = parseGlesVersion(extensions.getVersion());
-
-    // initialize the renderer while GL is current
-
-    std::unique_ptr<RenderEngine> engine;
-    switch (version) {
-        case GLES_VERSION_1_0:
-        case GLES_VERSION_1_1:
-            LOG_ALWAYS_FATAL("SurfaceFlinger requires OpenGL ES 2.0 minimum to run.");
-            break;
-        case GLES_VERSION_2_0:
-        case GLES_VERSION_3_0:
-            engine = std::make_unique<GLES20RenderEngine>(featureFlags);
-            break;
-    }
-    engine->setEGLHandles(display, config, ctxt);
-
-    ALOGI("OpenGL ES informations:");
-    ALOGI("vendor    : %s", extensions.getVendor());
-    ALOGI("renderer  : %s", extensions.getRenderer());
-    ALOGI("version   : %s", extensions.getVersion());
-    ALOGI("extensions: %s", extensions.getExtensions());
-    ALOGI("GL_MAX_TEXTURE_SIZE = %zu", engine->getMaxTextureSize());
-    ALOGI("GL_MAX_VIEWPORT_DIMS = %zu", engine->getMaxViewportDims());
-
-    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    eglDestroySurface(display, dummy);
-
-    return engine;
-}
-
-bool RenderEngine::overrideUseContextPriorityFromConfig(bool useContextPriority) {
-    OptionalBool ret;
-    ISurfaceFlingerConfigs::getService()->useContextPriority([&ret](OptionalBool b) { ret = b; });
-    if (ret.specified) {
-        return ret.value;
-    } else {
-        return useContextPriority;
-    }
-}
-
 RenderEngine::RenderEngine(uint32_t featureFlags)
-      : mEGLDisplay(EGL_NO_DISPLAY),
-        mEGLConfig(nullptr),
-        mEGLContext(EGL_NO_CONTEXT),
-        mFeatureFlags(featureFlags) {}
+      : mFeatureFlags(featureFlags) {}
 
-RenderEngine::~RenderEngine() {
-    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    eglTerminate(mEGLDisplay);
+RenderEngine::~RenderEngine() = default;
+
+bool RenderEngine::useNativeFenceSync() const {
+    return SyncFeatures::getInstance().useNativeFenceSync();
 }
 
-void RenderEngine::setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt) {
-    mEGLDisplay = display;
-    mEGLConfig = config;
-    mEGLContext = ctxt;
+bool RenderEngine::useWaitSync() const {
+    return SyncFeatures::getInstance().useWaitSync();
 }
 
-EGLDisplay RenderEngine::getEGLDisplay() const {
-    return mEGLDisplay;
-}
-
-EGLConfig RenderEngine::getEGLConfig() const {
-    return mEGLConfig;
-}
-
-bool RenderEngine::supportsImageCrop() const {
-    return GLExtensions::getInstance().hasImageCrop();
-}
-
-bool RenderEngine::isCurrent() const {
-    return mEGLDisplay == eglGetCurrentDisplay() && mEGLContext == eglGetCurrentContext();
-}
-
-std::unique_ptr<RE::Surface> RenderEngine::createSurface() {
-    return std::make_unique<Surface>(*this);
-}
-
-std::unique_ptr<RE::Image> RenderEngine::createImage() {
-    return std::make_unique<Image>(*this);
-}
-
-bool RenderEngine::setCurrentSurface(const android::RE::Surface& surface) {
-    // Note: RE::Surface is an abstract interface. This implementation only ever
-    // creates RE::impl::Surface's, so it is safe to just cast to the actual
-    // type.
-    return setCurrentSurface(static_cast<const android::RE::impl::Surface&>(surface));
-}
-
-bool RenderEngine::setCurrentSurface(const android::RE::impl::Surface& surface) {
-    bool success = true;
-    EGLSurface eglSurface = surface.getEGLSurface();
-    if (eglSurface != eglGetCurrentSurface(EGL_DRAW)) {
-        success = eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext) == EGL_TRUE;
-        if (success && surface.getAsync()) {
-            eglSwapInterval(mEGLDisplay, 0);
-        }
-    }
-
-    return success;
-}
-
-void RenderEngine::resetCurrentSurface() {
-    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-}
-
-base::unique_fd RenderEngine::flush() {
-    if (!GLExtensions::getInstance().hasNativeFenceSync()) {
-        return base::unique_fd();
-    }
-
-    EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
-    if (sync == EGL_NO_SYNC_KHR) {
-        ALOGW("failed to create EGL native fence sync: %#x", eglGetError());
-        return base::unique_fd();
-    }
-
-    // native fence fd will not be populated until flush() is done.
-    glFlush();
-
-    // get the fence fd
-    base::unique_fd fenceFd(eglDupNativeFenceFDANDROID(mEGLDisplay, sync));
-    eglDestroySyncKHR(mEGLDisplay, sync);
-    if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
-        ALOGW("failed to dup EGL native fence sync: %#x", eglGetError());
-    }
-
-    return fenceFd;
-}
-
-bool RenderEngine::finish() {
-    if (!GLExtensions::getInstance().hasFenceSync()) {
-        ALOGW("no synchronization support");
-        return false;
-    }
-
-    EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_FENCE_KHR, nullptr);
-    if (sync == EGL_NO_SYNC_KHR) {
-        ALOGW("failed to create EGL fence sync: %#x", eglGetError());
-        return false;
-    }
-
-    EGLint result = eglClientWaitSyncKHR(mEGLDisplay, sync, EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
-                                         2000000000 /*2 sec*/);
-    EGLint error = eglGetError();
-    eglDestroySyncKHR(mEGLDisplay, sync);
-    if (result != EGL_CONDITION_SATISFIED_KHR) {
-        if (result == EGL_TIMEOUT_EXPIRED_KHR) {
-            ALOGW("fence wait timed out");
-        } else {
-            ALOGW("error waiting on EGL fence: %#x", error);
-        }
-        return false;
-    }
-
-    return true;
-}
-
-bool RenderEngine::waitFence(base::unique_fd fenceFd) {
-    if (!GLExtensions::getInstance().hasNativeFenceSync() ||
-        !GLExtensions::getInstance().hasWaitSync()) {
-        return false;
-    }
-
-    EGLint attribs[] = {EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd, EGL_NONE};
-    EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
-    if (sync == EGL_NO_SYNC_KHR) {
-        ALOGE("failed to create EGL native fence sync: %#x", eglGetError());
-        return false;
-    }
-
-    // fenceFd is now owned by EGLSync
-    (void)fenceFd.release();
-
-    // XXX: The spec draft is inconsistent as to whether this should return an
-    // EGLint or void.  Ignore the return value for now, as it's not strictly
-    // needed.
-    eglWaitSyncKHR(mEGLDisplay, sync, 0);
-    EGLint error = eglGetError();
-    eglDestroySyncKHR(mEGLDisplay, sync);
-    if (error != EGL_SUCCESS) {
-        ALOGE("failed to wait for EGL native fence sync: %#x", error);
-        return false;
-    }
-
-    return true;
-}
-
-void RenderEngine::checkErrors() const {
-    do {
-        // there could be more than one error flag
-        GLenum error = glGetError();
-        if (error == GL_NO_ERROR) break;
-        ALOGE("GL error 0x%04x", int(error));
-    } while (true);
-}
-
-RenderEngine::GlesVersion RenderEngine::parseGlesVersion(const char* str) {
-    int major, minor;
-    if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
-        if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
-            ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
-            return GLES_VERSION_1_0;
-        }
-    }
-
-    if (major == 1 && minor == 0) return GLES_VERSION_1_0;
-    if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
-    if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
-    if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
-
-    ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
-    return GLES_VERSION_1_0;
-}
-
-void RenderEngine::fillRegionWithColor(const Region& region, uint32_t height, float red,
-                                       float green, float blue, float alpha) {
-    size_t c;
-    Rect const* r = region.getArray(&c);
-    Mesh mesh(Mesh::TRIANGLES, c * 6, 2);
-    Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
-    for (size_t i = 0; i < c; i++, r++) {
-        position[i * 6 + 0].x = r->left;
-        position[i * 6 + 0].y = height - r->top;
-        position[i * 6 + 1].x = r->left;
-        position[i * 6 + 1].y = height - r->bottom;
-        position[i * 6 + 2].x = r->right;
-        position[i * 6 + 2].y = height - r->bottom;
-        position[i * 6 + 3].x = r->left;
-        position[i * 6 + 3].y = height - r->top;
-        position[i * 6 + 4].x = r->right;
-        position[i * 6 + 4].y = height - r->bottom;
-        position[i * 6 + 5].x = r->right;
-        position[i * 6 + 5].y = height - r->top;
-    }
-    setupFillWithColor(red, green, blue, alpha);
-    drawMesh(mesh);
-}
-
-void RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
-    glClearColor(red, green, blue, alpha);
-    glClear(GL_COLOR_BUFFER_BIT);
-}
-
-void RenderEngine::setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top) {
-    glScissor(left, bottom, right, top);
-    glEnable(GL_SCISSOR_TEST);
-}
-
-void RenderEngine::disableScissor() {
-    glDisable(GL_SCISSOR_TEST);
-}
-
-void RenderEngine::genTextures(size_t count, uint32_t* names) {
-    glGenTextures(count, names);
-}
-
-void RenderEngine::deleteTextures(size_t count, uint32_t const* names) {
-    glDeleteTextures(count, names);
-}
-
-void RenderEngine::bindExternalTextureImage(uint32_t texName, const android::RE::Image& image) {
-    // Note: RE::Image is an abstract interface. This implementation only ever
-    // creates RE::impl::Image's, so it is safe to just cast to the actual type.
-    return bindExternalTextureImage(texName, static_cast<const android::RE::impl::Image&>(image));
-}
-
-void RenderEngine::bindExternalTextureImage(uint32_t texName,
-                                            const android::RE::impl::Image& image) {
-    const GLenum target = GL_TEXTURE_EXTERNAL_OES;
-
-    glBindTexture(target, texName);
-    if (image.getEGLImage() != EGL_NO_IMAGE_KHR) {
-        glEGLImageTargetTexture2DOES(target, static_cast<GLeglImageOES>(image.getEGLImage()));
-    }
-}
-
-void RenderEngine::readPixels(size_t l, size_t b, size_t w, size_t h, uint32_t* pixels) {
-    glReadPixels(l, b, w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
-}
-
-void RenderEngine::dump(String8& result) {
-    const GLExtensions& extensions = GLExtensions::getInstance();
-
-    result.appendFormat("EGL implementation : %s\n", extensions.getEGLVersion());
-    result.appendFormat("%s\n", extensions.getEGLExtensions());
-
-    result.appendFormat("GLES: %s, %s, %s\n", extensions.getVendor(), extensions.getRenderer(),
-                        extensions.getVersion());
-    result.appendFormat("%s\n", extensions.getExtensions());
-}
-
-// ---------------------------------------------------------------------------
-
-void RenderEngine::bindNativeBufferAsFrameBuffer(ANativeWindowBuffer* buffer,
-                                                 RE::BindNativeBufferAsFramebuffer* bindHelper) {
-    bindHelper->mImage = eglCreateImageKHR(mEGLDisplay, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
-                                           buffer, nullptr);
-    if (bindHelper->mImage == EGL_NO_IMAGE_KHR) {
-        bindHelper->mStatus = NO_MEMORY;
-        return;
-    }
-
-    uint32_t glStatus;
-    bindImageAsFramebuffer(bindHelper->mImage, &bindHelper->mTexName, &bindHelper->mFbName,
-                           &glStatus);
-
-    ALOGE_IF(glStatus != GL_FRAMEBUFFER_COMPLETE_OES, "glCheckFramebufferStatusOES error %d",
-             glStatus);
-
-    bindHelper->mStatus = glStatus == GL_FRAMEBUFFER_COMPLETE_OES ? NO_ERROR : BAD_VALUE;
-}
-
-void RenderEngine::unbindNativeBufferAsFrameBuffer(RE::BindNativeBufferAsFramebuffer* bindHelper) {
-    if (bindHelper->mImage == EGL_NO_IMAGE_KHR) {
-        return;
-    }
-
-    // back to main framebuffer
-    unbindFramebuffer(bindHelper->mTexName, bindHelper->mFbName);
-    eglDestroyImageKHR(mEGLDisplay, bindHelper->mImage);
-
-    // Workaround for b/77935566 to force the EGL driver to release the
-    // screenshot buffer
-    setScissor(0, 0, 0, 0);
-    clearWithColor(0.0, 0.0, 0.0, 0.0);
-    disableScissor();
-}
-
-// ---------------------------------------------------------------------------
-
-static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs, EGLint attribute,
-                                         EGLint wanted, EGLConfig* outConfig) {
-    EGLint numConfigs = -1, n = 0;
-    eglGetConfigs(dpy, nullptr, 0, &numConfigs);
-    EGLConfig* const configs = new EGLConfig[numConfigs];
-    eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
-
-    if (n) {
-        if (attribute != EGL_NONE) {
-            for (int i = 0; i < n; i++) {
-                EGLint value = 0;
-                eglGetConfigAttrib(dpy, configs[i], attribute, &value);
-                if (wanted == value) {
-                    *outConfig = configs[i];
-                    delete[] configs;
-                    return NO_ERROR;
-                }
-            }
-        } else {
-            // just pick the first one
-            *outConfig = configs[0];
-            delete[] configs;
-            return NO_ERROR;
-        }
-    }
-    delete[] configs;
-    return NAME_NOT_FOUND;
-}
-
-class EGLAttributeVector {
-    struct Attribute;
-    class Adder;
-    friend class Adder;
-    KeyedVector<Attribute, EGLint> mList;
-    struct Attribute {
-        Attribute() : v(0){};
-        explicit Attribute(EGLint v) : v(v) {}
-        EGLint v;
-        bool operator<(const Attribute& other) const {
-            // this places EGL_NONE at the end
-            EGLint lhs(v);
-            EGLint rhs(other.v);
-            if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
-            if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
-            return lhs < rhs;
-        }
-    };
-    class Adder {
-        friend class EGLAttributeVector;
-        EGLAttributeVector& v;
-        EGLint attribute;
-        Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) {}
-
-    public:
-        void operator=(EGLint value) {
-            if (attribute != EGL_NONE) {
-                v.mList.add(Attribute(attribute), value);
-            }
-        }
-        operator EGLint() const { return v.mList[attribute]; }
-    };
-
-public:
-    EGLAttributeVector() { mList.add(Attribute(EGL_NONE), EGL_NONE); }
-    void remove(EGLint attribute) {
-        if (attribute != EGL_NONE) {
-            mList.removeItem(Attribute(attribute));
-        }
-    }
-    Adder operator[](EGLint attribute) { return Adder(*this, attribute); }
-    EGLint operator[](EGLint attribute) const { return mList[attribute]; }
-    // cast-operator to (EGLint const*)
-    operator EGLint const*() const { return &mList.keyAt(0).v; }
-};
-
-static status_t selectEGLConfig(EGLDisplay display, EGLint format, EGLint renderableType,
-                                EGLConfig* config) {
-    // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
-    // it is to be used with WIFI displays
-    status_t err;
-    EGLint wantedAttribute;
-    EGLint wantedAttributeValue;
-
-    EGLAttributeVector attribs;
-    if (renderableType) {
-        attribs[EGL_RENDERABLE_TYPE] = renderableType;
-        attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
-        attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
-        attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
-        attribs[EGL_RED_SIZE] = 8;
-        attribs[EGL_GREEN_SIZE] = 8;
-        attribs[EGL_BLUE_SIZE] = 8;
-        attribs[EGL_ALPHA_SIZE] = 8;
-        wantedAttribute = EGL_NONE;
-        wantedAttributeValue = EGL_NONE;
-    } else {
-        // if no renderable type specified, fallback to a simplified query
-        wantedAttribute = EGL_NATIVE_VISUAL_ID;
-        wantedAttributeValue = format;
-    }
-
-    err = selectConfigForAttribute(display, attribs, wantedAttribute, wantedAttributeValue, config);
-    if (err == NO_ERROR) {
-        EGLint caveat;
-        if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
-            ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
-    }
-
-    return err;
-}
-
-EGLConfig RenderEngine::chooseEglConfig(EGLDisplay display, int format, bool logConfig) {
-    status_t err;
-    EGLConfig config;
-
-    // First try to get an ES2 config
-    err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
-    if (err != NO_ERROR) {
-        // If ES2 fails, try ES1
-        err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
-        if (err != NO_ERROR) {
-            // still didn't work, probably because we're on the emulator...
-            // try a simplified query
-            ALOGW("no suitable EGLConfig found, trying a simpler query");
-            err = selectEGLConfig(display, format, 0, &config);
-            if (err != NO_ERROR) {
-                // this EGL is too lame for android
-                LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
-            }
-        }
-    }
-
-    if (logConfig) {
-        // print some debugging info
-        EGLint r, g, b, a;
-        eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
-        eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
-        eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
-        eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
-        ALOGI("EGL information:");
-        ALOGI("vendor    : %s", eglQueryString(display, EGL_VENDOR));
-        ALOGI("version   : %s", eglQueryString(display, EGL_VERSION));
-        ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
-        ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS) ?: "Not Supported");
-        ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
-    }
-
-    return config;
-}
-
-void RenderEngine::primeCache() const {
-    ProgramCache::getInstance().primeCache(mFeatureFlags & WIDE_COLOR_SUPPORT);
-}
-
-// ---------------------------------------------------------------------------
-
-} // namespace impl
-} // namespace RE
-} // namespace android
+}  // namespace impl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.h b/services/surfaceflinger/RenderEngine/RenderEngine.h
deleted file mode 100644
index 1786155..0000000
--- a/services/surfaceflinger/RenderEngine/RenderEngine.h
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- * Copyright 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef SF_RENDERENGINE_H_
-#define SF_RENDERENGINE_H_
-
-#include <memory>
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-#include <Transform.h>
-#include <android-base/unique_fd.h>
-#include <gui/SurfaceControl.h>
-#include <math/mat4.h>
-
-#define EGL_NO_CONFIG ((EGLConfig)0)
-
-struct ANativeWindowBuffer;
-
-// ---------------------------------------------------------------------------
-namespace android {
-// ---------------------------------------------------------------------------
-
-class String8;
-class Rect;
-class Region;
-class Mesh;
-class Texture;
-
-namespace RE {
-
-class Image;
-class Surface;
-class BindNativeBufferAsFramebuffer;
-
-namespace impl {
-class RenderEngine;
-}
-
-class RenderEngine {
-public:
-    enum FeatureFlag {
-        WIDE_COLOR_SUPPORT = 1 << 0 // Platform has a wide color display
-    };
-
-    virtual ~RenderEngine() = 0;
-
-    virtual std::unique_ptr<RE::Surface> createSurface() = 0;
-    virtual std::unique_ptr<RE::Image> createImage() = 0;
-
-    virtual void primeCache() const = 0;
-
-    // dump the extension strings. always call the base class.
-    virtual void dump(String8& result) = 0;
-
-    virtual bool supportsImageCrop() const = 0;
-
-    virtual bool isCurrent() const = 0;
-    virtual bool setCurrentSurface(const RE::Surface& surface) = 0;
-    virtual void resetCurrentSurface() = 0;
-
-    // helpers
-    // flush submits RenderEngine command stream for execution and returns a
-    // native fence fd that is signaled when the execution has completed.  It
-    // returns -1 on errors.
-    virtual base::unique_fd flush() = 0;
-    // finish waits until RenderEngine command stream has been executed.  It
-    // returns false on errors.
-    virtual bool finish() = 0;
-    // waitFence inserts a wait on an external fence fd to RenderEngine
-    // command stream.  It returns false on errors.
-    virtual bool waitFence(base::unique_fd fenceFd) = 0;
-
-    virtual void clearWithColor(float red, float green, float blue, float alpha) = 0;
-    virtual void fillRegionWithColor(const Region& region, uint32_t height, float red, float green,
-                                     float blue, float alpha) = 0;
-
-    // common to all GL versions
-    virtual void setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top) = 0;
-    virtual void disableScissor() = 0;
-    virtual void genTextures(size_t count, uint32_t* names) = 0;
-    virtual void deleteTextures(size_t count, uint32_t const* names) = 0;
-    virtual void bindExternalTextureImage(uint32_t texName, const RE::Image& image) = 0;
-    virtual void readPixels(size_t l, size_t b, size_t w, size_t h, uint32_t* pixels) = 0;
-    virtual void bindNativeBufferAsFrameBuffer(ANativeWindowBuffer* buffer,
-                                               RE::BindNativeBufferAsFramebuffer* bindHelper) = 0;
-    virtual void unbindNativeBufferAsFrameBuffer(RE::BindNativeBufferAsFramebuffer* bindHelper) = 0;
-
-    // set-up
-    virtual void checkErrors() const;
-    virtual void setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop, size_t hwh,
-                                          bool yswap, Transform::orientation_flags rotation) = 0;
-    virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
-                                    const half4& color) = 0;
-    virtual void setupLayerTexturing(const Texture& texture) = 0;
-    virtual void setupLayerBlackedOut() = 0;
-    virtual void setupFillWithColor(float r, float g, float b, float a) = 0;
-
-    virtual void setupColorTransform(const mat4& /* colorTransform */) = 0;
-
-    virtual void disableTexturing() = 0;
-    virtual void disableBlending() = 0;
-
-    // HDR and wide color gamut support
-    virtual void setSourceY410BT2020(bool enable) = 0;
-    virtual void setSourceDataSpace(ui::Dataspace source) = 0;
-    virtual void setOutputDataSpace(ui::Dataspace dataspace) = 0;
-    virtual void setDisplayMaxLuminance(const float maxLuminance) = 0;
-
-    // drawing
-    virtual void drawMesh(const Mesh& mesh) = 0;
-
-    // queries
-    virtual size_t getMaxTextureSize() const = 0;
-    virtual size_t getMaxViewportDims() const = 0;
-};
-
-class BindNativeBufferAsFramebuffer {
-public:
-    BindNativeBufferAsFramebuffer(RenderEngine& engine, ANativeWindowBuffer* buffer)
-          : mEngine(engine) {
-        mEngine.bindNativeBufferAsFrameBuffer(buffer, this);
-    }
-    ~BindNativeBufferAsFramebuffer() { mEngine.unbindNativeBufferAsFrameBuffer(this); }
-    status_t getStatus() const { return mStatus; }
-
-protected:
-    friend impl::RenderEngine;
-
-    RenderEngine& mEngine;
-    EGLImageKHR mImage;
-    uint32_t mTexName, mFbName;
-    status_t mStatus;
-};
-
-namespace impl {
-
-class Image;
-class Surface;
-
-class RenderEngine : public RE::RenderEngine {
-    enum GlesVersion {
-        GLES_VERSION_1_0 = 0x10000,
-        GLES_VERSION_1_1 = 0x10001,
-        GLES_VERSION_2_0 = 0x20000,
-        GLES_VERSION_3_0 = 0x30000,
-    };
-    static GlesVersion parseGlesVersion(const char* str);
-
-    EGLDisplay mEGLDisplay;
-    EGLConfig mEGLConfig;
-    EGLContext mEGLContext;
-    void setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt);
-
-    static bool overrideUseContextPriorityFromConfig(bool useContextPriority);
-
-protected:
-    RenderEngine(uint32_t featureFlags);
-
-    const uint32_t mFeatureFlags;
-
-public:
-    virtual ~RenderEngine() = 0;
-
-    static std::unique_ptr<RenderEngine> create(int hwcFormat, uint32_t featureFlags);
-
-    static EGLConfig chooseEglConfig(EGLDisplay display, int format, bool logConfig);
-
-    // RenderEngine interface implementation
-
-    std::unique_ptr<RE::Surface> createSurface() override;
-    std::unique_ptr<RE::Image> createImage() override;
-
-    void primeCache() const override;
-
-    // dump the extension strings. always call the base class.
-    void dump(String8& result) override;
-
-    bool supportsImageCrop() const override;
-
-    bool isCurrent() const;
-    bool setCurrentSurface(const RE::Surface& surface) override;
-    void resetCurrentSurface() override;
-
-    // synchronization
-
-    // flush submits RenderEngine command stream for execution and returns a
-    // native fence fd that is signaled when the execution has completed.  It
-    // returns -1 on errors.
-    base::unique_fd flush() override;
-    // finish waits until RenderEngine command stream has been executed.  It
-    // returns false on errors.
-    bool finish() override;
-    // waitFence inserts a wait on an external fence fd to RenderEngine
-    // command stream.  It returns false on errors.
-    bool waitFence(base::unique_fd fenceFd) override;
-
-    // helpers
-    void clearWithColor(float red, float green, float blue, float alpha) override;
-    void fillRegionWithColor(const Region& region, uint32_t height, float red, float green,
-                             float blue, float alpha) override;
-
-    // common to all GL versions
-    void setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top) override;
-    void disableScissor() override;
-    void genTextures(size_t count, uint32_t* names) override;
-    void deleteTextures(size_t count, uint32_t const* names) override;
-    void bindExternalTextureImage(uint32_t texName, const RE::Image& image) override;
-    void readPixels(size_t l, size_t b, size_t w, size_t h, uint32_t* pixels) override;
-
-    void checkErrors() const override;
-
-    void setupColorTransform(const mat4& /* colorTransform */) override {}
-
-    // internal to RenderEngine
-    EGLDisplay getEGLDisplay() const;
-    EGLConfig getEGLConfig() const;
-
-    // Common implementation
-    bool setCurrentSurface(const RE::impl::Surface& surface);
-    void bindExternalTextureImage(uint32_t texName, const RE::impl::Image& image);
-
-    void bindNativeBufferAsFrameBuffer(ANativeWindowBuffer* buffer,
-                                       RE::BindNativeBufferAsFramebuffer* bindHelper) override;
-    void unbindNativeBufferAsFrameBuffer(RE::BindNativeBufferAsFramebuffer* bindHelper) override;
-
-    // Overriden by each specialization
-    virtual void bindImageAsFramebuffer(EGLImageKHR image, uint32_t* texName, uint32_t* fbName,
-                                        uint32_t* status) = 0;
-    virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName) = 0;
-};
-
-} // namespace impl
-} // namespace RE
-} // namespace android
-
-#endif /* SF_RENDERENGINE_H_ */
diff --git a/services/surfaceflinger/RenderEngine/Surface.h b/services/surfaceflinger/RenderEngine/Surface.h
deleted file mode 100644
index d4d3d8c..0000000
--- a/services/surfaceflinger/RenderEngine/Surface.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <cstdint>
-
-#include <EGL/egl.h>
-
-struct ANativeWindow;
-
-namespace android {
-namespace RE {
-
-class Surface {
-public:
-    virtual ~Surface() = 0;
-
-    virtual void setCritical(bool enable) = 0;
-    virtual void setAsync(bool enable) = 0;
-
-    virtual void setNativeWindow(ANativeWindow* window) = 0;
-    virtual void swapBuffers() const = 0;
-
-    virtual int32_t queryRedSize() const = 0;
-    virtual int32_t queryGreenSize() const = 0;
-    virtual int32_t queryBlueSize() const = 0;
-    virtual int32_t queryAlphaSize() const = 0;
-
-    virtual int32_t queryWidth() const = 0;
-    virtual int32_t queryHeight() const = 0;
-};
-
-namespace impl {
-
-class RenderEngine;
-
-class Surface final : public RE::Surface {
-public:
-    Surface(const RenderEngine& engine);
-    ~Surface();
-
-    Surface(const Surface&) = delete;
-    Surface& operator=(const Surface&) = delete;
-
-    // RE::Surface implementation
-    void setCritical(bool enable) override { mCritical = enable; }
-    void setAsync(bool enable) override { mAsync = enable; }
-
-    void setNativeWindow(ANativeWindow* window) override;
-    void swapBuffers() const override;
-
-    int32_t queryRedSize() const override;
-    int32_t queryGreenSize() const override;
-    int32_t queryBlueSize() const override;
-    int32_t queryAlphaSize() const override;
-
-    int32_t queryWidth() const override;
-    int32_t queryHeight() const override;
-
-private:
-    EGLint queryConfig(EGLint attrib) const;
-    EGLint querySurface(EGLint attrib) const;
-
-    // methods internal to RenderEngine
-    friend class RenderEngine;
-    bool getAsync() const { return mAsync; }
-    EGLSurface getEGLSurface() const { return mEGLSurface; }
-
-    EGLDisplay mEGLDisplay;
-    EGLConfig mEGLConfig;
-
-    bool mCritical = false;
-    bool mAsync = false;
-
-    ANativeWindow* mWindow = nullptr;
-    EGLSurface mEGLSurface = EGL_NO_SURFACE;
-};
-
-} // namespace impl
-} // namespace RE
-} // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Texture.cpp b/services/surfaceflinger/RenderEngine/Texture.cpp
index 351430f..5eabbcf 100644
--- a/services/surfaceflinger/RenderEngine/Texture.cpp
+++ b/services/surfaceflinger/RenderEngine/Texture.cpp
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-#include <string.h>
-
-#include "Texture.h"
+#include <renderengine/Texture.h>
 
 namespace android {
+namespace renderengine {
 
 Texture::Texture()
       : mTextureName(0), mTextureTarget(TEXTURE_2D), mWidth(0), mHeight(0), mFiltering(false) {}
@@ -74,4 +73,5 @@
     return mHeight;
 }
 
-} /* namespace android */
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp
new file mode 100644
index 0000000..1b0a539
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp
@@ -0,0 +1,944 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//#define LOG_NDEBUG 0
+#undef LOG_TAG
+#define LOG_TAG "RenderEngine"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "GLES20RenderEngine.h"
+
+#include <math.h>
+#include <fstream>
+#include <sstream>
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <cutils/compiler.h>
+#include <renderengine/Mesh.h>
+#include <renderengine/Texture.h>
+#include <renderengine/private/Description.h>
+#include <ui/ColorSpace.h>
+#include <ui/DebugUtils.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
+#include <utils/String8.h>
+#include <utils/Trace.h>
+#include "GLExtensions.h"
+#include "GLFramebuffer.h"
+#include "GLImage.h"
+#include "GLSurface.h"
+#include "Program.h"
+#include "ProgramCache.h"
+
+extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
+
+bool checkGlError(const char* op, int lineNumber) {
+    bool errorFound = false;
+    GLint error = glGetError();
+    while (error != GL_NO_ERROR) {
+        errorFound = true;
+        error = glGetError();
+        ALOGV("after %s() (line # %d) glError (0x%x)\n", op, lineNumber, error);
+    }
+    return errorFound;
+}
+
+static constexpr bool outputDebugPPMs = false;
+
+void writePPM(const char* basename, GLuint width, GLuint height) {
+    ALOGV("writePPM #%s: %d x %d", basename, width, height);
+
+    std::vector<GLubyte> pixels(width * height * 4);
+    std::vector<GLubyte> outBuffer(width * height * 3);
+
+    // TODO(courtneygo): We can now have float formats, need
+    // to remove this code or update to support.
+    // Make returned pixels fit in uint32_t, one byte per component
+    glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
+    if (checkGlError(__FUNCTION__, __LINE__)) {
+        return;
+    }
+
+    std::string filename(basename);
+    filename.append(".ppm");
+    std::ofstream file(filename.c_str(), std::ios::binary);
+    if (!file.is_open()) {
+        ALOGE("Unable to open file: %s", filename.c_str());
+        ALOGE("You may need to do: \"adb shell setenforce 0\" to enable "
+              "surfaceflinger to write debug images");
+        return;
+    }
+
+    file << "P6\n";
+    file << width << "\n";
+    file << height << "\n";
+    file << 255 << "\n";
+
+    auto ptr = reinterpret_cast<char*>(pixels.data());
+    auto outPtr = reinterpret_cast<char*>(outBuffer.data());
+    for (int y = height - 1; y >= 0; y--) {
+        char* data = ptr + y * width * sizeof(uint32_t);
+
+        for (GLuint x = 0; x < width; x++) {
+            // Only copy R, G and B components
+            outPtr[0] = data[0];
+            outPtr[1] = data[1];
+            outPtr[2] = data[2];
+            data += sizeof(uint32_t);
+            outPtr += 3;
+        }
+    }
+    file.write(reinterpret_cast<char*>(outBuffer.data()), outBuffer.size());
+}
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+using ui::Dataspace;
+
+static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs, EGLint attribute,
+                                         EGLint wanted, EGLConfig* outConfig) {
+    EGLint numConfigs = -1, n = 0;
+    eglGetConfigs(dpy, nullptr, 0, &numConfigs);
+    EGLConfig* const configs = new EGLConfig[numConfigs];
+    eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
+
+    if (n) {
+        if (attribute != EGL_NONE) {
+            for (int i = 0; i < n; i++) {
+                EGLint value = 0;
+                eglGetConfigAttrib(dpy, configs[i], attribute, &value);
+                if (wanted == value) {
+                    *outConfig = configs[i];
+                    delete[] configs;
+                    return NO_ERROR;
+                }
+            }
+        } else {
+            // just pick the first one
+            *outConfig = configs[0];
+            delete[] configs;
+            return NO_ERROR;
+        }
+    }
+    delete[] configs;
+    return NAME_NOT_FOUND;
+}
+
+class EGLAttributeVector {
+    struct Attribute;
+    class Adder;
+    friend class Adder;
+    KeyedVector<Attribute, EGLint> mList;
+    struct Attribute {
+        Attribute() : v(0){};
+        explicit Attribute(EGLint v) : v(v) {}
+        EGLint v;
+        bool operator<(const Attribute& other) const {
+            // this places EGL_NONE at the end
+            EGLint lhs(v);
+            EGLint rhs(other.v);
+            if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
+            if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
+            return lhs < rhs;
+        }
+    };
+    class Adder {
+        friend class EGLAttributeVector;
+        EGLAttributeVector& v;
+        EGLint attribute;
+        Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) {}
+
+    public:
+        void operator=(EGLint value) {
+            if (attribute != EGL_NONE) {
+                v.mList.add(Attribute(attribute), value);
+            }
+        }
+        operator EGLint() const { return v.mList[attribute]; }
+    };
+
+public:
+    EGLAttributeVector() { mList.add(Attribute(EGL_NONE), EGL_NONE); }
+    void remove(EGLint attribute) {
+        if (attribute != EGL_NONE) {
+            mList.removeItem(Attribute(attribute));
+        }
+    }
+    Adder operator[](EGLint attribute) { return Adder(*this, attribute); }
+    EGLint operator[](EGLint attribute) const { return mList[attribute]; }
+    // cast-operator to (EGLint const*)
+    operator EGLint const*() const { return &mList.keyAt(0).v; }
+};
+
+static status_t selectEGLConfig(EGLDisplay display, EGLint format, EGLint renderableType,
+                                EGLConfig* config) {
+    // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
+    // it is to be used with WIFI displays
+    status_t err;
+    EGLint wantedAttribute;
+    EGLint wantedAttributeValue;
+
+    EGLAttributeVector attribs;
+    if (renderableType) {
+        attribs[EGL_RENDERABLE_TYPE] = renderableType;
+        attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
+        attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
+        attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
+        attribs[EGL_RED_SIZE] = 8;
+        attribs[EGL_GREEN_SIZE] = 8;
+        attribs[EGL_BLUE_SIZE] = 8;
+        attribs[EGL_ALPHA_SIZE] = 8;
+        wantedAttribute = EGL_NONE;
+        wantedAttributeValue = EGL_NONE;
+    } else {
+        // if no renderable type specified, fallback to a simplified query
+        wantedAttribute = EGL_NATIVE_VISUAL_ID;
+        wantedAttributeValue = format;
+    }
+
+    err = selectConfigForAttribute(display, attribs, wantedAttribute, wantedAttributeValue, config);
+    if (err == NO_ERROR) {
+        EGLint caveat;
+        if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
+            ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
+    }
+
+    return err;
+}
+
+std::unique_ptr<GLES20RenderEngine> GLES20RenderEngine::create(int hwcFormat,
+                                                               uint32_t featureFlags) {
+    // initialize EGL for the default display
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (!eglInitialize(display, nullptr, nullptr)) {
+        LOG_ALWAYS_FATAL("failed to initialize EGL");
+    }
+
+    GLExtensions& extensions = GLExtensions::getInstance();
+    extensions.initWithEGLStrings(eglQueryStringImplementationANDROID(display, EGL_VERSION),
+                                  eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS));
+
+    // The code assumes that ES2 or later is available if this extension is
+    // supported.
+    EGLConfig config = EGL_NO_CONFIG;
+    if (!extensions.hasNoConfigContext()) {
+        config = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+    }
+
+    EGLint renderableType = 0;
+    if (config == EGL_NO_CONFIG) {
+        renderableType = EGL_OPENGL_ES2_BIT;
+    } else if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
+        LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
+    }
+    EGLint contextClientVersion = 0;
+    if (renderableType & EGL_OPENGL_ES2_BIT) {
+        contextClientVersion = 2;
+    } else if (renderableType & EGL_OPENGL_ES_BIT) {
+        contextClientVersion = 1;
+    } else {
+        LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
+    }
+
+    std::vector<EGLint> contextAttributes;
+    contextAttributes.reserve(6);
+    contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION);
+    contextAttributes.push_back(contextClientVersion);
+    bool useContextPriority = extensions.hasContextPriority() &&
+                              (featureFlags & RenderEngine::USE_HIGH_PRIORITY_CONTEXT);
+    if (useContextPriority) {
+        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
+        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
+    }
+    contextAttributes.push_back(EGL_NONE);
+
+    EGLContext ctxt = eglCreateContext(display, config, nullptr, contextAttributes.data());
+
+    // if can't create a GL context, we can only abort.
+    LOG_ALWAYS_FATAL_IF(ctxt == EGL_NO_CONTEXT, "EGLContext creation failed");
+
+    // now figure out what version of GL did we actually get
+    // NOTE: a dummy surface is not needed if KHR_create_context is supported
+
+    EGLConfig dummyConfig = config;
+    if (dummyConfig == EGL_NO_CONFIG) {
+        dummyConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+    }
+    EGLint attribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE};
+    EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, attribs);
+    LOG_ALWAYS_FATAL_IF(dummy == EGL_NO_SURFACE, "can't create dummy pbuffer");
+    EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
+    LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
+
+    extensions.initWithGLStrings(glGetString(GL_VENDOR), glGetString(GL_RENDERER),
+                                 glGetString(GL_VERSION), glGetString(GL_EXTENSIONS));
+
+    GlesVersion version = parseGlesVersion(extensions.getVersion());
+
+    // initialize the renderer while GL is current
+
+    std::unique_ptr<GLES20RenderEngine> engine;
+    switch (version) {
+        case GLES_VERSION_1_0:
+        case GLES_VERSION_1_1:
+            LOG_ALWAYS_FATAL("SurfaceFlinger requires OpenGL ES 2.0 minimum to run.");
+            break;
+        case GLES_VERSION_2_0:
+        case GLES_VERSION_3_0:
+            engine = std::make_unique<GLES20RenderEngine>(featureFlags);
+            break;
+    }
+    engine->setEGLHandles(display, config, ctxt);
+
+    ALOGI("OpenGL ES informations:");
+    ALOGI("vendor    : %s", extensions.getVendor());
+    ALOGI("renderer  : %s", extensions.getRenderer());
+    ALOGI("version   : %s", extensions.getVersion());
+    ALOGI("extensions: %s", extensions.getExtensions());
+    ALOGI("GL_MAX_TEXTURE_SIZE = %zu", engine->getMaxTextureSize());
+    ALOGI("GL_MAX_VIEWPORT_DIMS = %zu", engine->getMaxViewportDims());
+
+    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglDestroySurface(display, dummy);
+
+    return engine;
+}
+
+EGLConfig GLES20RenderEngine::chooseEglConfig(EGLDisplay display, int format, bool logConfig) {
+    status_t err;
+    EGLConfig config;
+
+    // First try to get an ES2 config
+    err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
+    if (err != NO_ERROR) {
+        // If ES2 fails, try ES1
+        err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
+        if (err != NO_ERROR) {
+            // still didn't work, probably because we're on the emulator...
+            // try a simplified query
+            ALOGW("no suitable EGLConfig found, trying a simpler query");
+            err = selectEGLConfig(display, format, 0, &config);
+            if (err != NO_ERROR) {
+                // this EGL is too lame for android
+                LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
+            }
+        }
+    }
+
+    if (logConfig) {
+        // print some debugging info
+        EGLint r, g, b, a;
+        eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
+        eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
+        eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
+        eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
+        ALOGI("EGL information:");
+        ALOGI("vendor    : %s", eglQueryString(display, EGL_VENDOR));
+        ALOGI("version   : %s", eglQueryString(display, EGL_VERSION));
+        ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
+        ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS) ?: "Not Supported");
+        ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
+    }
+
+    return config;
+}
+
+GLES20RenderEngine::GLES20RenderEngine(uint32_t featureFlags)
+      : renderengine::impl::RenderEngine(featureFlags),
+        mEGLDisplay(EGL_NO_DISPLAY),
+        mEGLConfig(nullptr),
+        mEGLContext(EGL_NO_CONTEXT),
+        mVpWidth(0),
+        mVpHeight(0),
+        mUseColorManagement(featureFlags & USE_COLOR_MANAGEMENT) {
+    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
+    glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
+
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+    glPixelStorei(GL_PACK_ALIGNMENT, 4);
+
+    const uint16_t protTexData[] = {0};
+    glGenTextures(1, &mProtectedTexName);
+    glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
+
+    // mColorBlindnessCorrection = M;
+
+    if (mUseColorManagement) {
+        ColorSpace srgb(ColorSpace::sRGB());
+        ColorSpace displayP3(ColorSpace::DisplayP3());
+        ColorSpace bt2020(ColorSpace::BT2020());
+
+        // Compute sRGB to Display P3 transform matrix.
+        // NOTE: For now, we are limiting output wide color space support to
+        // Display-P3 only.
+        mSrgbToDisplayP3 = mat4(ColorSpaceConnector(srgb, displayP3).getTransform());
+
+        // Compute Display P3 to sRGB transform matrix.
+        mDisplayP3ToSrgb = mat4(ColorSpaceConnector(displayP3, srgb).getTransform());
+
+        // no chromatic adaptation needed since all color spaces use D65 for their white points.
+        mSrgbToXyz = mat4(srgb.getRGBtoXYZ());
+        mDisplayP3ToXyz = mat4(displayP3.getRGBtoXYZ());
+        mBt2020ToXyz = mat4(bt2020.getRGBtoXYZ());
+        mXyzToSrgb = mat4(srgb.getXYZtoRGB());
+        mXyzToDisplayP3 = mat4(displayP3.getXYZtoRGB());
+        mXyzToBt2020 = mat4(bt2020.getXYZtoRGB());
+    }
+}
+
+GLES20RenderEngine::~GLES20RenderEngine() {
+    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglTerminate(mEGLDisplay);
+}
+
+std::unique_ptr<Framebuffer> GLES20RenderEngine::createFramebuffer() {
+    return std::make_unique<GLFramebuffer>(*this);
+}
+
+std::unique_ptr<Surface> GLES20RenderEngine::createSurface() {
+    return std::make_unique<GLSurface>(*this);
+}
+
+std::unique_ptr<Image> GLES20RenderEngine::createImage() {
+    return std::make_unique<GLImage>(*this);
+}
+
+void GLES20RenderEngine::primeCache() const {
+    ProgramCache::getInstance().primeCache(mFeatureFlags & USE_COLOR_MANAGEMENT);
+}
+
+bool GLES20RenderEngine::isCurrent() const {
+    return mEGLDisplay == eglGetCurrentDisplay() && mEGLContext == eglGetCurrentContext();
+}
+
+bool GLES20RenderEngine::setCurrentSurface(const Surface& surface) {
+    // Surface is an abstract interface. GLES20RenderEngine only ever
+    // creates GLSurface's, so it is safe to just cast to the actual
+    // type.
+    bool success = true;
+    const GLSurface& glSurface = static_cast<const GLSurface&>(surface);
+    EGLSurface eglSurface = glSurface.getEGLSurface();
+    if (eglSurface != eglGetCurrentSurface(EGL_DRAW)) {
+        success = eglMakeCurrent(mEGLDisplay, eglSurface, eglSurface, mEGLContext) == EGL_TRUE;
+        if (success && glSurface.getAsync()) {
+            eglSwapInterval(mEGLDisplay, 0);
+        }
+        if (success) {
+            mSurfaceHeight = glSurface.getHeight();
+        }
+    }
+
+    return success;
+}
+
+void GLES20RenderEngine::resetCurrentSurface() {
+    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    mSurfaceHeight = 0;
+}
+
+base::unique_fd GLES20RenderEngine::flush() {
+    if (!GLExtensions::getInstance().hasNativeFenceSync()) {
+        return base::unique_fd();
+    }
+
+    EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
+    if (sync == EGL_NO_SYNC_KHR) {
+        ALOGW("failed to create EGL native fence sync: %#x", eglGetError());
+        return base::unique_fd();
+    }
+
+    // native fence fd will not be populated until flush() is done.
+    glFlush();
+
+    // get the fence fd
+    base::unique_fd fenceFd(eglDupNativeFenceFDANDROID(mEGLDisplay, sync));
+    eglDestroySyncKHR(mEGLDisplay, sync);
+    if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+        ALOGW("failed to dup EGL native fence sync: %#x", eglGetError());
+    }
+
+    return fenceFd;
+}
+
+bool GLES20RenderEngine::finish() {
+    if (!GLExtensions::getInstance().hasFenceSync()) {
+        ALOGW("no synchronization support");
+        return false;
+    }
+
+    EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_FENCE_KHR, nullptr);
+    if (sync == EGL_NO_SYNC_KHR) {
+        ALOGW("failed to create EGL fence sync: %#x", eglGetError());
+        return false;
+    }
+
+    EGLint result = eglClientWaitSyncKHR(mEGLDisplay, sync, EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
+                                         2000000000 /*2 sec*/);
+    EGLint error = eglGetError();
+    eglDestroySyncKHR(mEGLDisplay, sync);
+    if (result != EGL_CONDITION_SATISFIED_KHR) {
+        if (result == EGL_TIMEOUT_EXPIRED_KHR) {
+            ALOGW("fence wait timed out");
+        } else {
+            ALOGW("error waiting on EGL fence: %#x", error);
+        }
+        return false;
+    }
+
+    return true;
+}
+
+bool GLES20RenderEngine::waitFence(base::unique_fd fenceFd) {
+    if (!GLExtensions::getInstance().hasNativeFenceSync() ||
+        !GLExtensions::getInstance().hasWaitSync()) {
+        return false;
+    }
+
+    EGLint attribs[] = {EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd, EGL_NONE};
+    EGLSyncKHR sync = eglCreateSyncKHR(mEGLDisplay, EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
+    if (sync == EGL_NO_SYNC_KHR) {
+        ALOGE("failed to create EGL native fence sync: %#x", eglGetError());
+        return false;
+    }
+
+    // fenceFd is now owned by EGLSync
+    (void)fenceFd.release();
+
+    // XXX: The spec draft is inconsistent as to whether this should return an
+    // EGLint or void.  Ignore the return value for now, as it's not strictly
+    // needed.
+    eglWaitSyncKHR(mEGLDisplay, sync, 0);
+    EGLint error = eglGetError();
+    eglDestroySyncKHR(mEGLDisplay, sync);
+    if (error != EGL_SUCCESS) {
+        ALOGE("failed to wait for EGL native fence sync: %#x", error);
+        return false;
+    }
+
+    return true;
+}
+
+void GLES20RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
+    glClearColor(red, green, blue, alpha);
+    glClear(GL_COLOR_BUFFER_BIT);
+}
+
+void GLES20RenderEngine::fillRegionWithColor(const Region& region, float red, float green,
+                                             float blue, float alpha) {
+    size_t c;
+    Rect const* r = region.getArray(&c);
+    Mesh mesh(Mesh::TRIANGLES, c * 6, 2);
+    Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
+    for (size_t i = 0; i < c; i++, r++) {
+        position[i * 6 + 0].x = r->left;
+        position[i * 6 + 0].y = r->top;
+        position[i * 6 + 1].x = r->left;
+        position[i * 6 + 1].y = r->bottom;
+        position[i * 6 + 2].x = r->right;
+        position[i * 6 + 2].y = r->bottom;
+        position[i * 6 + 3].x = r->left;
+        position[i * 6 + 3].y = r->top;
+        position[i * 6 + 4].x = r->right;
+        position[i * 6 + 4].y = r->bottom;
+        position[i * 6 + 5].x = r->right;
+        position[i * 6 + 5].y = r->top;
+    }
+    setupFillWithColor(red, green, blue, alpha);
+    drawMesh(mesh);
+}
+
+void GLES20RenderEngine::setScissor(const Rect& region) {
+    // Invert y-coordinate to map to GL-space.
+    int32_t canvasHeight = mRenderToFbo ? mFboHeight : mSurfaceHeight;
+    int32_t glBottom = canvasHeight - region.bottom;
+
+    glScissor(region.left, glBottom, region.getWidth(), region.getHeight());
+    glEnable(GL_SCISSOR_TEST);
+}
+
+void GLES20RenderEngine::disableScissor() {
+    glDisable(GL_SCISSOR_TEST);
+}
+
+void GLES20RenderEngine::genTextures(size_t count, uint32_t* names) {
+    glGenTextures(count, names);
+}
+
+void GLES20RenderEngine::deleteTextures(size_t count, uint32_t const* names) {
+    glDeleteTextures(count, names);
+}
+
+void GLES20RenderEngine::bindExternalTextureImage(uint32_t texName,
+                                                  const Image& image) {
+    const GLImage& glImage = static_cast<const GLImage&>(image);
+    const GLenum target = GL_TEXTURE_EXTERNAL_OES;
+
+    glBindTexture(target, texName);
+    if (glImage.getEGLImage() != EGL_NO_IMAGE_KHR) {
+        glEGLImageTargetTexture2DOES(target,
+                                     static_cast<GLeglImageOES>(glImage.getEGLImage()));
+    }
+}
+
+status_t GLES20RenderEngine::bindFrameBuffer(Framebuffer* framebuffer) {
+    GLFramebuffer* glFramebuffer = static_cast<GLFramebuffer*>(framebuffer);
+    EGLImageKHR eglImage = glFramebuffer->getEGLImage();
+    uint32_t textureName = glFramebuffer->getTextureName();
+    uint32_t framebufferName = glFramebuffer->getFramebufferName();
+
+    // Bind the texture and turn our EGLImage into a texture
+    glBindTexture(GL_TEXTURE_2D, textureName);
+    glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)eglImage);
+
+    // Bind the Framebuffer to render into
+    glBindFramebuffer(GL_FRAMEBUFFER, framebufferName);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+                           GL_TEXTURE_2D, textureName, 0);
+
+    mRenderToFbo = true;
+    mFboHeight = glFramebuffer->getBufferHeight();
+
+    uint32_t glStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+
+    ALOGE_IF(glStatus != GL_FRAMEBUFFER_COMPLETE_OES,
+             "glCheckFramebufferStatusOES error %d", glStatus);
+
+    return glStatus == GL_FRAMEBUFFER_COMPLETE_OES ? NO_ERROR : BAD_VALUE;
+}
+
+void GLES20RenderEngine::unbindFrameBuffer(Framebuffer* /* framebuffer */) {
+    mRenderToFbo = false;
+    mFboHeight = 0;
+
+    // back to main framebuffer
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+    // Workaround for b/77935566 to force the EGL driver to release the
+    // screenshot buffer
+    setScissor(Rect::EMPTY_RECT);
+    clearWithColor(0.0, 0.0, 0.0, 0.0);
+    disableScissor();
+}
+
+void GLES20RenderEngine::checkErrors() const {
+    do {
+        // there could be more than one error flag
+        GLenum error = glGetError();
+        if (error == GL_NO_ERROR) break;
+        ALOGE("GL error 0x%04x", int(error));
+    } while (true);
+}
+
+void GLES20RenderEngine::setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
+                                                  ui::Transform::orientation_flags rotation) {
+    int32_t l = sourceCrop.left;
+    int32_t r = sourceCrop.right;
+    int32_t b = sourceCrop.bottom;
+    int32_t t = sourceCrop.top;
+    if (mRenderToFbo) {
+        std::swap(t, b);
+    }
+    mat4 m = mat4::ortho(l, r, b, t, 0, 1);
+
+    // Apply custom rotation to the projection.
+    float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f;
+    switch (rotation) {
+        case ui::Transform::ROT_0:
+            break;
+        case ui::Transform::ROT_90:
+            m = mat4::rotate(rot90InRadians, vec3(0, 0, 1)) * m;
+            break;
+        case ui::Transform::ROT_180:
+            m = mat4::rotate(rot90InRadians * 2.0f, vec3(0, 0, 1)) * m;
+            break;
+        case ui::Transform::ROT_270:
+            m = mat4::rotate(rot90InRadians * 3.0f, vec3(0, 0, 1)) * m;
+            break;
+        default:
+            break;
+    }
+
+    glViewport(0, 0, vpw, vph);
+    mState.projectionMatrix = m;
+    mVpWidth = vpw;
+    mVpHeight = vph;
+}
+
+void GLES20RenderEngine::setupLayerBlending(bool premultipliedAlpha, bool opaque,
+                                            bool disableTexture, const half4& color) {
+    mState.isPremultipliedAlpha = premultipliedAlpha;
+    mState.isOpaque = opaque;
+    mState.color = color;
+
+    if (disableTexture) {
+        mState.textureEnabled = false;
+    }
+
+    if (color.a < 1.0f || !opaque) {
+        glEnable(GL_BLEND);
+        glBlendFunc(premultipliedAlpha ? GL_ONE : GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    } else {
+        glDisable(GL_BLEND);
+    }
+}
+
+void GLES20RenderEngine::setSourceY410BT2020(bool enable) {
+    mState.isY410BT2020 = enable;
+}
+
+void GLES20RenderEngine::setSourceDataSpace(Dataspace source) {
+    mDataSpace = source;
+}
+
+void GLES20RenderEngine::setOutputDataSpace(Dataspace dataspace) {
+    mOutputDataSpace = dataspace;
+}
+
+void GLES20RenderEngine::setDisplayMaxLuminance(const float maxLuminance) {
+    mState.displayMaxLuminance = maxLuminance;
+}
+
+void GLES20RenderEngine::setupLayerTexturing(const Texture& texture) {
+    GLuint target = texture.getTextureTarget();
+    glBindTexture(target, texture.getTextureName());
+    GLenum filter = GL_NEAREST;
+    if (texture.getFiltering()) {
+        filter = GL_LINEAR;
+    }
+    glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glTexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
+    glTexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
+
+    mState.texture = texture;
+    mState.textureEnabled = true;
+}
+
+void GLES20RenderEngine::setupLayerBlackedOut() {
+    glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
+    Texture texture(Texture::TEXTURE_2D, mProtectedTexName);
+    texture.setDimensions(1, 1); // FIXME: we should get that from somewhere
+    mState.texture = texture;
+    mState.textureEnabled = true;
+}
+
+void GLES20RenderEngine::setColorTransform(const mat4& colorTransform) {
+    mState.colorMatrix = colorTransform;
+}
+
+void GLES20RenderEngine::disableTexturing() {
+    mState.textureEnabled = false;
+}
+
+void GLES20RenderEngine::disableBlending() {
+    glDisable(GL_BLEND);
+}
+
+void GLES20RenderEngine::setupFillWithColor(float r, float g, float b, float a) {
+    mState.isPremultipliedAlpha = true;
+    mState.isOpaque = false;
+    mState.color = half4(r, g, b, a);
+    mState.textureEnabled = false;
+    glDisable(GL_BLEND);
+}
+
+void GLES20RenderEngine::drawMesh(const Mesh& mesh) {
+    ATRACE_CALL();
+    if (mesh.getTexCoordsSize()) {
+        glEnableVertexAttribArray(Program::texCoords);
+        glVertexAttribPointer(Program::texCoords, mesh.getTexCoordsSize(), GL_FLOAT, GL_FALSE,
+                              mesh.getByteStride(), mesh.getTexCoords());
+    }
+
+    glVertexAttribPointer(Program::position, mesh.getVertexSize(), GL_FLOAT, GL_FALSE,
+                          mesh.getByteStride(), mesh.getPositions());
+
+    // By default, DISPLAY_P3 is the only supported wide color output. However,
+    // when HDR content is present, hardware composer may be able to handle
+    // BT2020 data space, in that case, the output data space is set to be
+    // BT2020_HLG or BT2020_PQ respectively. In GPU fall back we need
+    // to respect this and convert non-HDR content to HDR format.
+    if (mUseColorManagement) {
+        Description managedState = mState;
+        Dataspace inputStandard = static_cast<Dataspace>(mDataSpace & Dataspace::STANDARD_MASK);
+        Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
+        Dataspace outputStandard = static_cast<Dataspace>(mOutputDataSpace &
+                                                          Dataspace::STANDARD_MASK);
+        Dataspace outputTransfer = static_cast<Dataspace>(mOutputDataSpace &
+                                                          Dataspace::TRANSFER_MASK);
+        bool needsXYZConversion = needsXYZTransformMatrix();
+
+        if (needsXYZConversion) {
+            // The supported input color spaces are standard RGB, Display P3 and BT2020.
+            switch (inputStandard) {
+                case Dataspace::STANDARD_DCI_P3:
+                    managedState.inputTransformMatrix = mDisplayP3ToXyz;
+                    break;
+                case Dataspace::STANDARD_BT2020:
+                    managedState.inputTransformMatrix = mBt2020ToXyz;
+                    break;
+                default:
+                    managedState.inputTransformMatrix = mSrgbToXyz;
+                    break;
+            }
+
+            // The supported output color spaces are BT2020, Display P3 and standard RGB.
+            switch (outputStandard) {
+                case Dataspace::STANDARD_BT2020:
+                    managedState.outputTransformMatrix = mXyzToBt2020;
+                    break;
+                case Dataspace::STANDARD_DCI_P3:
+                    managedState.outputTransformMatrix = mXyzToDisplayP3;
+                    break;
+                default:
+                    managedState.outputTransformMatrix = mXyzToSrgb;
+                    break;
+            }
+        } else if (inputStandard != outputStandard) {
+            // At this point, the input data space and output data space could be both
+            // HDR data spaces, but they match each other, we do nothing in this case.
+            // In addition to the case above, the input data space could be
+            // - scRGB linear
+            // - scRGB non-linear
+            // - sRGB
+            // - Display P3
+            // The output data spaces could be
+            // - sRGB
+            // - Display P3
+            if (outputStandard == Dataspace::STANDARD_BT709) {
+                managedState.outputTransformMatrix = mDisplayP3ToSrgb;
+            } else if (outputStandard == Dataspace::STANDARD_DCI_P3) {
+                managedState.outputTransformMatrix = mSrgbToDisplayP3;
+            }
+        }
+
+        // we need to convert the RGB value to linear space and convert it back when:
+        // - there is a color matrix that is not an identity matrix, or
+        // - there is an output transform matrix that is not an identity matrix, or
+        // - the input transfer function doesn't match the output transfer function.
+        if (managedState.hasColorMatrix() || managedState.hasOutputTransformMatrix() ||
+            inputTransfer != outputTransfer) {
+            managedState.inputTransferFunction =
+                Description::dataSpaceToTransferFunction(inputTransfer);
+            managedState.outputTransferFunction =
+                Description::dataSpaceToTransferFunction(outputTransfer);
+        }
+
+        ProgramCache::getInstance().useProgram(managedState);
+
+        glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
+
+        if (outputDebugPPMs) {
+            static uint64_t managedColorFrameCount = 0;
+            std::ostringstream out;
+            out << "/data/texture_out" << managedColorFrameCount++;
+            writePPM(out.str().c_str(), mVpWidth, mVpHeight);
+        }
+    } else {
+        ProgramCache::getInstance().useProgram(mState);
+
+        glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
+    }
+
+    if (mesh.getTexCoordsSize()) {
+        glDisableVertexAttribArray(Program::texCoords);
+    }
+}
+
+size_t GLES20RenderEngine::getMaxTextureSize() const {
+    return mMaxTextureSize;
+}
+
+size_t GLES20RenderEngine::getMaxViewportDims() const {
+    return mMaxViewportDims[0] < mMaxViewportDims[1] ? mMaxViewportDims[0] : mMaxViewportDims[1];
+}
+
+void GLES20RenderEngine::dump(String8& result) {
+    const GLExtensions& extensions = GLExtensions::getInstance();
+
+    result.appendFormat("EGL implementation : %s\n", extensions.getEGLVersion());
+    result.appendFormat("%s\n", extensions.getEGLExtensions());
+
+    result.appendFormat("GLES: %s, %s, %s\n", extensions.getVendor(), extensions.getRenderer(),
+                        extensions.getVersion());
+    result.appendFormat("%s\n", extensions.getExtensions());
+    result.appendFormat("RenderEngine last dataspace conversion: (%s) to (%s)\n",
+                        dataspaceDetails(static_cast<android_dataspace>(mDataSpace)).c_str(),
+                        dataspaceDetails(static_cast<android_dataspace>(mOutputDataSpace)).c_str());
+}
+
+GLES20RenderEngine::GlesVersion GLES20RenderEngine::parseGlesVersion(const char* str) {
+    int major, minor;
+    if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
+        if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
+            ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
+            return GLES_VERSION_1_0;
+        }
+    }
+
+    if (major == 1 && minor == 0) return GLES_VERSION_1_0;
+    if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
+    if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
+    if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
+
+    ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
+    return GLES_VERSION_1_0;
+}
+
+bool GLES20RenderEngine::isHdrDataSpace(const Dataspace dataSpace) const {
+    const Dataspace standard = static_cast<Dataspace>(dataSpace & Dataspace::STANDARD_MASK);
+    const Dataspace transfer = static_cast<Dataspace>(dataSpace & Dataspace::TRANSFER_MASK);
+    return standard == Dataspace::STANDARD_BT2020 &&
+        (transfer == Dataspace::TRANSFER_ST2084 || transfer == Dataspace::TRANSFER_HLG);
+}
+
+// For convenience, we want to convert the input color space to XYZ color space first,
+// and then convert from XYZ color space to output color space when
+// - SDR and HDR contents are mixed, either SDR content will be converted to HDR or
+//   HDR content will be tone-mapped to SDR; Or,
+// - there are HDR PQ and HLG contents presented at the same time, where we want to convert
+//   HLG content to PQ content.
+// In either case above, we need to operate the Y value in XYZ color space. Thus, when either
+// input data space or output data space is HDR data space, and the input transfer function
+// doesn't match the output transfer function, we would enable an intermediate transfrom to
+// XYZ color space.
+bool GLES20RenderEngine::needsXYZTransformMatrix() const {
+    const bool isInputHdrDataSpace = isHdrDataSpace(mDataSpace);
+    const bool isOutputHdrDataSpace = isHdrDataSpace(mOutputDataSpace);
+    const Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
+    const Dataspace outputTransfer = static_cast<Dataspace>(mOutputDataSpace &
+                                                            Dataspace::TRANSFER_MASK);
+
+    return (isInputHdrDataSpace || isOutputHdrDataSpace) && inputTransfer != outputTransfer;
+}
+
+void GLES20RenderEngine::setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt) {
+    mEGLDisplay = display;
+    mEGLConfig = config;
+    mEGLContext = ctxt;
+}
+
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h
new file mode 100644
index 0000000..4f03a90
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SF_GLES20RENDERENGINE_H_
+#define SF_GLES20RENDERENGINE_H_
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+#include <renderengine/RenderEngine.h>
+#include <renderengine/private/Description.h>
+
+#define EGL_NO_CONFIG ((EGLConfig)0)
+
+namespace android {
+
+class String8;
+
+namespace renderengine {
+
+class Mesh;
+class Texture;
+
+namespace gl {
+
+class GLImage;
+class GLSurface;
+
+class GLES20RenderEngine : public impl::RenderEngine {
+public:
+    static std::unique_ptr<GLES20RenderEngine> create(int hwcFormat, uint32_t featureFlags);
+    static EGLConfig chooseEglConfig(EGLDisplay display, int format, bool logConfig);
+
+    GLES20RenderEngine(uint32_t featureFlags); // See RenderEngine::FeatureFlag
+    ~GLES20RenderEngine() override;
+
+    std::unique_ptr<Framebuffer> createFramebuffer() override;
+    std::unique_ptr<Surface> createSurface() override;
+    std::unique_ptr<Image> createImage() override;
+
+    void primeCache() const override;
+    bool isCurrent() const override;
+    bool setCurrentSurface(const Surface& surface) override;
+    void resetCurrentSurface() override;
+    base::unique_fd flush() override;
+    bool finish() override;
+    bool waitFence(base::unique_fd fenceFd) override;
+    void clearWithColor(float red, float green, float blue, float alpha) override;
+    void fillRegionWithColor(const Region& region, float red, float green, float blue,
+                             float alpha) override;
+    void setScissor(const Rect& region) override;
+    void disableScissor() override;
+    void genTextures(size_t count, uint32_t* names) override;
+    void deleteTextures(size_t count, uint32_t const* names) override;
+    void bindExternalTextureImage(uint32_t texName, const Image& image) override;
+    status_t bindFrameBuffer(Framebuffer* framebuffer) override;
+    void unbindFrameBuffer(Framebuffer* framebuffer) override;
+    void checkErrors() const override;
+
+    // internal to RenderEngine
+    EGLDisplay getEGLDisplay() const { return mEGLDisplay; }
+    EGLConfig getEGLConfig() const { return mEGLConfig; }
+
+protected:
+    void dump(String8& result) override;
+    void setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
+                                  ui::Transform::orientation_flags rotation) override;
+    void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
+                            const half4& color) override;
+    void setupLayerTexturing(const Texture& texture) override;
+    void setupLayerBlackedOut() override;
+    void setupFillWithColor(float r, float g, float b, float a) override;
+    void setColorTransform(const mat4& colorTransform) override;
+    void disableTexturing() override;
+    void disableBlending() override;
+
+    // HDR and color management related functions and state
+    void setSourceY410BT2020(bool enable) override;
+    void setSourceDataSpace(ui::Dataspace source) override;
+    void setOutputDataSpace(ui::Dataspace dataspace) override;
+    void setDisplayMaxLuminance(const float maxLuminance) override;
+
+    // drawing
+    void drawMesh(const Mesh& mesh) override;
+
+    size_t getMaxTextureSize() const override;
+    size_t getMaxViewportDims() const override;
+
+private:
+    enum GlesVersion {
+        GLES_VERSION_1_0 = 0x10000,
+        GLES_VERSION_1_1 = 0x10001,
+        GLES_VERSION_2_0 = 0x20000,
+        GLES_VERSION_3_0 = 0x30000,
+    };
+
+    static GlesVersion parseGlesVersion(const char* str);
+
+    // A data space is considered HDR data space if it has BT2020 color space
+    // with PQ or HLG transfer function.
+    bool isHdrDataSpace(const ui::Dataspace dataSpace) const;
+    bool needsXYZTransformMatrix() const;
+    void setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt);
+
+    EGLDisplay mEGLDisplay;
+    EGLConfig mEGLConfig;
+    EGLContext mEGLContext;
+    GLuint mProtectedTexName;
+    GLint mMaxViewportDims[2];
+    GLint mMaxTextureSize;
+    GLuint mVpWidth;
+    GLuint mVpHeight;
+    Description mState;
+
+    mat4 mSrgbToDisplayP3;
+    mat4 mDisplayP3ToSrgb;
+    mat4 mSrgbToXyz;
+    mat4 mBt2020ToXyz;
+    mat4 mDisplayP3ToXyz;
+    mat4 mXyzToSrgb;
+    mat4 mXyzToDisplayP3;
+    mat4 mXyzToBt2020;
+
+    bool mRenderToFbo = false;
+    int32_t mSurfaceHeight = 0;
+    int32_t mFboHeight = 0;
+
+    // Current dataspace of layer being rendered
+    ui::Dataspace mDataSpace = ui::Dataspace::UNKNOWN;
+
+    // Current output dataspace of the render engine
+    ui::Dataspace mOutputDataSpace = ui::Dataspace::UNKNOWN;
+
+    // Whether device supports color management, currently color management
+    // supports sRGB, DisplayP3 color spaces.
+    const bool mUseColorManagement = false;
+};
+
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
+
+#endif /* SF_GLES20RENDERENGINE_H_ */
diff --git a/services/surfaceflinger/RenderEngine/GLExtensions.cpp b/services/surfaceflinger/RenderEngine/gl/GLExtensions.cpp
similarity index 91%
rename from services/surfaceflinger/RenderEngine/GLExtensions.cpp
rename to services/surfaceflinger/RenderEngine/gl/GLExtensions.cpp
index dc09a37..6f50ea7 100644
--- a/services/surfaceflinger/RenderEngine/GLExtensions.cpp
+++ b/services/surfaceflinger/RenderEngine/gl/GLExtensions.cpp
@@ -14,16 +14,17 @@
  * limitations under the License.
  */
 
+#include "GLExtensions.h"
+
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "GLExtensions.h"
+ANDROID_SINGLETON_STATIC_INSTANCE(android::renderengine::gl::GLExtensions)
 
 namespace android {
-// ---------------------------------------------------------------------------
-
-ANDROID_SINGLETON_STATIC_INSTANCE(GLExtensions)
+namespace renderengine {
+namespace gl {
 
 SortedVector<String8> GLExtensions::parseExtensionString(char const* extensions) {
     SortedVector<String8> list;
@@ -99,10 +100,6 @@
     if (hasEGLExtension("EGL_KHR_wait_sync")) {
         mHasWaitSync = true;
     }
-
-    if (hasEGLExtension("EGL_ANDROID_image_crop")) {
-        mHasImageCrop = true;
-    }
     if (hasEGLExtension("EGL_EXT_protected_content")) {
         mHasProtectedContent = true;
     }
@@ -124,5 +121,6 @@
     return mEGLExtensionList.indexOf(s) >= 0;
 }
 
-// ---------------------------------------------------------------------------
-}; // namespace android
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/GLExtensions.h b/services/surfaceflinger/RenderEngine/gl/GLExtensions.h
similarity index 90%
rename from services/surfaceflinger/RenderEngine/GLExtensions.h
rename to services/surfaceflinger/RenderEngine/gl/GLExtensions.h
index 0d8c10b..efdd8b7 100644
--- a/services/surfaceflinger/RenderEngine/GLExtensions.h
+++ b/services/surfaceflinger/RenderEngine/gl/GLExtensions.h
@@ -20,17 +20,17 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#include <utils/Singleton.h>
-#include <utils/SortedVector.h>
-#include <utils/String8.h>
-
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 #include <GLES/gl.h>
 #include <GLES/glext.h>
+#include <utils/Singleton.h>
+#include <utils/SortedVector.h>
+#include <utils/String8.h>
 
 namespace android {
-// ---------------------------------------------------------------------------
+namespace renderengine {
+namespace gl {
 
 class GLExtensions : public Singleton<GLExtensions> {
     friend class Singleton<GLExtensions>;
@@ -39,7 +39,6 @@
     bool mHasNativeFenceSync = false;
     bool mHasFenceSync = false;
     bool mHasWaitSync = false;
-    bool mHasImageCrop = false;
     bool mHasProtectedContent = false;
     bool mHasContextPriority = false;
 
@@ -66,7 +65,6 @@
     bool hasNativeFenceSync() const { return mHasNativeFenceSync; }
     bool hasFenceSync() const { return mHasFenceSync; }
     bool hasWaitSync() const { return mHasWaitSync; }
-    bool hasImageCrop() const { return mHasImageCrop; }
     bool hasProtectedContent() const { return mHasProtectedContent; }
     bool hasContextPriority() const { return mHasContextPriority; }
 
@@ -84,7 +82,8 @@
     bool hasEGLExtension(char const* extension) const;
 };
 
-// ---------------------------------------------------------------------------
-}; // namespace android
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
 
 #endif // ANDROID_SF_GLEXTENSION_H
diff --git a/services/surfaceflinger/RenderEngine/gl/GLFramebuffer.cpp b/services/surfaceflinger/RenderEngine/gl/GLFramebuffer.cpp
new file mode 100644
index 0000000..83d2bde
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/gl/GLFramebuffer.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "GLFramebuffer.h"
+
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <nativebase/nativebase.h>
+#include "GLES20RenderEngine.h"
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+GLFramebuffer::GLFramebuffer(const GLES20RenderEngine& engine)
+        : mEGLDisplay(engine.getEGLDisplay()),
+          mEGLImage(EGL_NO_IMAGE_KHR) {
+    glGenTextures(1, &mTextureName);
+    glGenFramebuffers(1, &mFramebufferName);
+}
+
+GLFramebuffer::~GLFramebuffer() {
+    glDeleteFramebuffers(1, &mFramebufferName);
+    glDeleteTextures(1, &mTextureName);
+    eglDestroyImageKHR(mEGLDisplay, mEGLImage);
+}
+
+bool GLFramebuffer::setNativeWindowBuffer(ANativeWindowBuffer* nativeBuffer) {
+    if (mEGLImage != EGL_NO_IMAGE_KHR) {
+        eglDestroyImageKHR(mEGLDisplay, mEGLImage);
+        mEGLImage = EGL_NO_IMAGE_KHR;
+        mBufferWidth = 0;
+        mBufferHeight = 0;
+    }
+
+    if (nativeBuffer) {
+        mEGLImage = eglCreateImageKHR(mEGLDisplay, EGL_NO_CONTEXT,
+                                      EGL_NATIVE_BUFFER_ANDROID,
+                                      nativeBuffer, nullptr);
+        if (mEGLImage == EGL_NO_IMAGE_KHR) {
+            return false;
+        }
+        mBufferWidth = nativeBuffer->width;
+        mBufferHeight = nativeBuffer->height;
+    }
+    return true;
+}
+
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLFramebuffer.h b/services/surfaceflinger/RenderEngine/gl/GLFramebuffer.h
new file mode 100644
index 0000000..193cbdc
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/gl/GLFramebuffer.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <renderengine/Framebuffer.h>
+
+struct ANativeWindowBuffer;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GLES20RenderEngine;
+
+class GLFramebuffer : public renderengine::Framebuffer {
+public:
+    explicit GLFramebuffer(const GLES20RenderEngine& engine);
+    ~GLFramebuffer() override;
+
+    bool setNativeWindowBuffer(ANativeWindowBuffer* nativeBuffer) override;
+    EGLImageKHR getEGLImage() const { return mEGLImage; }
+    uint32_t getTextureName() const { return mTextureName; }
+    uint32_t getFramebufferName() const { return mFramebufferName; }
+    int32_t getBufferHeight() const { return mBufferHeight; }
+    int32_t getBufferWidth() const { return mBufferWidth; }
+
+private:
+    EGLDisplay mEGLDisplay;
+    EGLImageKHR mEGLImage;
+    uint32_t mTextureName, mFramebufferName;
+
+    int32_t mBufferHeight = 0;
+    int32_t mBufferWidth = 0;
+};
+
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Image.cpp b/services/surfaceflinger/RenderEngine/gl/GLImage.cpp
similarity index 60%
rename from services/surfaceflinger/RenderEngine/Image.cpp
rename to services/surfaceflinger/RenderEngine/gl/GLImage.cpp
index 0d06422..746f3e7 100644
--- a/services/surfaceflinger/RenderEngine/Image.cpp
+++ b/services/surfaceflinger/RenderEngine/gl/GLImage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 The Android Open Source Project
+ * Copyright 2018 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,30 +14,19 @@
  * limitations under the License.
  */
 
-#include "Image.h"
+#include "GLImage.h"
 
 #include <vector>
 
 #include <log/log.h>
-
 #include "GLExtensions.h"
-#include "RenderEngine.h"
+#include "GLES20RenderEngine.h"
 
 namespace android {
-namespace RE {
+namespace renderengine {
+namespace gl {
 
-Image::~Image() = default;
-
-namespace impl {
-
-Image::Image(const RenderEngine& engine) : mEGLDisplay(engine.getEGLDisplay()) {}
-
-Image::~Image() {
-    setNativeWindowBuffer(nullptr, false, 0, 0);
-}
-
-static std::vector<EGLint> buildAttributeList(bool isProtected, int32_t cropWidth,
-                                              int32_t cropHeight) {
+static std::vector<EGLint> buildAttributeList(bool isProtected) {
     std::vector<EGLint> attrs;
     attrs.reserve(16);
 
@@ -49,24 +38,18 @@
         attrs.push_back(EGL_TRUE);
     }
 
-    if (cropWidth > 0 && cropHeight > 0) {
-        attrs.push_back(EGL_IMAGE_CROP_LEFT_ANDROID);
-        attrs.push_back(0);
-        attrs.push_back(EGL_IMAGE_CROP_TOP_ANDROID);
-        attrs.push_back(0);
-        attrs.push_back(EGL_IMAGE_CROP_RIGHT_ANDROID);
-        attrs.push_back(cropWidth);
-        attrs.push_back(EGL_IMAGE_CROP_BOTTOM_ANDROID);
-        attrs.push_back(cropHeight);
-    }
-
     attrs.push_back(EGL_NONE);
 
     return attrs;
 }
 
-bool Image::setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected, int32_t cropWidth,
-                                  int32_t cropHeight) {
+GLImage::GLImage(const GLES20RenderEngine& engine) : mEGLDisplay(engine.getEGLDisplay()) {}
+
+GLImage::~GLImage() {
+    setNativeWindowBuffer(nullptr, false);
+}
+
+bool GLImage::setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected) {
     if (mEGLImage != EGL_NO_IMAGE_KHR) {
         if (!eglDestroyImageKHR(mEGLDisplay, mEGLImage)) {
             ALOGE("failed to destroy image: %#x", eglGetError());
@@ -75,7 +58,7 @@
     }
 
     if (buffer) {
-        std::vector<EGLint> attrs = buildAttributeList(isProtected, cropWidth, cropHeight);
+        std::vector<EGLint> attrs = buildAttributeList(isProtected);
         mEGLImage = eglCreateImageKHR(mEGLDisplay, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
                                       static_cast<EGLClientBuffer>(buffer), attrs.data());
         if (mEGLImage == EGL_NO_IMAGE_KHR) {
@@ -87,6 +70,6 @@
     return true;
 }
 
-} // namespace impl
-} // namespace RE
-} // namespace android
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLImage.h b/services/surfaceflinger/RenderEngine/gl/GLImage.h
new file mode 100644
index 0000000..f670783
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/gl/GLImage.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <android-base/macros.h>
+#include <renderengine/Image.h>
+
+struct ANativeWindowBuffer;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GLES20RenderEngine;
+
+class GLImage : public renderengine::Image {
+public:
+    explicit GLImage(const GLES20RenderEngine& engine);
+    ~GLImage() override;
+
+    bool setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected) override;
+
+    EGLImageKHR getEGLImage() const { return mEGLImage; }
+
+private:
+    EGLDisplay mEGLDisplay;
+    EGLImageKHR mEGLImage = EGL_NO_IMAGE_KHR;
+
+    DISALLOW_COPY_AND_ASSIGN(GLImage);
+};
+
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Surface.cpp b/services/surfaceflinger/RenderEngine/gl/GLSurface.cpp
similarity index 61%
rename from services/surfaceflinger/RenderEngine/Surface.cpp
rename to services/surfaceflinger/RenderEngine/gl/GLSurface.cpp
index 0d20f1f..104af56 100644
--- a/services/surfaceflinger/RenderEngine/Surface.cpp
+++ b/services/surfaceflinger/RenderEngine/gl/GLSurface.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 The Android Open Source Project
+ * Copyright 2018 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,44 +14,47 @@
  * limitations under the License.
  */
 
-#include "Surface.h"
+#include "GLSurface.h"
 
-#include "RenderEngine.h"
-
+#include <android/native_window.h>
 #include <log/log.h>
+#include <ui/PixelFormat.h>
+#include "GLES20RenderEngine.h"
 
 namespace android {
-namespace RE {
+namespace renderengine {
+namespace gl {
 
-Surface::~Surface() = default;
-
-namespace impl {
-
-Surface::Surface(const RenderEngine& engine)
+GLSurface::GLSurface(const GLES20RenderEngine& engine)
       : mEGLDisplay(engine.getEGLDisplay()), mEGLConfig(engine.getEGLConfig()) {
     // RE does not assume any config when EGL_KHR_no_config_context is supported
     if (mEGLConfig == EGL_NO_CONFIG_KHR) {
-        mEGLConfig = RenderEngine::chooseEglConfig(mEGLDisplay, PIXEL_FORMAT_RGBA_8888, false);
+        mEGLConfig = GLES20RenderEngine::chooseEglConfig(mEGLDisplay,
+                                                         PIXEL_FORMAT_RGBA_8888, false);
     }
 }
 
-Surface::~Surface() {
+GLSurface::~GLSurface() {
     setNativeWindow(nullptr);
 }
 
-void Surface::setNativeWindow(ANativeWindow* window) {
+void GLSurface::setNativeWindow(ANativeWindow* window) {
     if (mEGLSurface != EGL_NO_SURFACE) {
         eglDestroySurface(mEGLDisplay, mEGLSurface);
         mEGLSurface = EGL_NO_SURFACE;
+        mSurfaceWidth = 0;
+        mSurfaceHeight = 0;
     }
 
     mWindow = window;
     if (mWindow) {
         mEGLSurface = eglCreateWindowSurface(mEGLDisplay, mEGLConfig, mWindow, nullptr);
+        mSurfaceWidth = ANativeWindow_getWidth(window);
+        mSurfaceHeight = ANativeWindow_getHeight(window);
     }
 }
 
-void Surface::swapBuffers() const {
+void GLSurface::swapBuffers() const {
     if (!eglSwapBuffers(mEGLDisplay, mEGLSurface)) {
         EGLint error = eglGetError();
 
@@ -64,7 +67,7 @@
     }
 }
 
-EGLint Surface::queryConfig(EGLint attrib) const {
+EGLint GLSurface::queryConfig(EGLint attrib) const {
     EGLint value;
     if (!eglGetConfigAttrib(mEGLDisplay, mEGLConfig, attrib, &value)) {
         value = 0;
@@ -73,39 +76,30 @@
     return value;
 }
 
-EGLint Surface::querySurface(EGLint attrib) const {
-    EGLint value;
-    if (!eglQuerySurface(mEGLDisplay, mEGLSurface, attrib, &value)) {
-        value = 0;
-    }
-
-    return value;
-}
-
-int32_t Surface::queryRedSize() const {
+int32_t GLSurface::queryRedSize() const {
     return queryConfig(EGL_RED_SIZE);
 }
 
-int32_t Surface::queryGreenSize() const {
+int32_t GLSurface::queryGreenSize() const {
     return queryConfig(EGL_GREEN_SIZE);
 }
 
-int32_t Surface::queryBlueSize() const {
+int32_t GLSurface::queryBlueSize() const {
     return queryConfig(EGL_BLUE_SIZE);
 }
 
-int32_t Surface::queryAlphaSize() const {
+int32_t GLSurface::queryAlphaSize() const {
     return queryConfig(EGL_ALPHA_SIZE);
 }
 
-int32_t Surface::queryWidth() const {
-    return querySurface(EGL_WIDTH);
+int32_t GLSurface::getWidth() const {
+    return mSurfaceWidth;
 }
 
-int32_t Surface::queryHeight() const {
-    return querySurface(EGL_HEIGHT);
+int32_t GLSurface::getHeight() const {
+    return mSurfaceHeight;
 }
 
-} // namespace impl
-} // namespace RE
-} // namespace android
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLSurface.h b/services/surfaceflinger/RenderEngine/gl/GLSurface.h
new file mode 100644
index 0000000..8aa223a
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/gl/GLSurface.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include <EGL/egl.h>
+#include <android-base/macros.h>
+#include <renderengine/Surface.h>
+
+struct ANativeWindow;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GLES20RenderEngine;
+
+class GLSurface final : public renderengine::Surface {
+public:
+    GLSurface(const GLES20RenderEngine& engine);
+    ~GLSurface() override;
+
+    // renderengine::Surface implementation
+    void setCritical(bool enable) override { mCritical = enable; }
+    void setAsync(bool enable) override { mAsync = enable; }
+
+    void setNativeWindow(ANativeWindow* window) override;
+    void swapBuffers() const override;
+
+    int32_t queryRedSize() const override;
+    int32_t queryGreenSize() const override;
+    int32_t queryBlueSize() const override;
+    int32_t queryAlphaSize() const override;
+
+    bool getAsync() const { return mAsync; }
+    EGLSurface getEGLSurface() const { return mEGLSurface; }
+
+    int32_t getWidth() const override;
+    int32_t getHeight() const override;
+
+private:
+    EGLint queryConfig(EGLint attrib) const;
+
+    EGLDisplay mEGLDisplay;
+    EGLConfig mEGLConfig;
+
+    bool mCritical = false;
+    bool mAsync = false;
+
+    int32_t mSurfaceWidth = 0;
+    int32_t mSurfaceHeight = 0;
+
+    ANativeWindow* mWindow = nullptr;
+    EGLSurface mEGLSurface = EGL_NO_SURFACE;
+
+    DISALLOW_COPY_AND_ASSIGN(GLSurface);
+};
+
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Program.cpp b/services/surfaceflinger/RenderEngine/gl/Program.cpp
similarity index 90%
rename from services/surfaceflinger/RenderEngine/Program.cpp
rename to services/surfaceflinger/RenderEngine/gl/Program.cpp
index fe536f0..da67f92 100644
--- a/services/surfaceflinger/RenderEngine/Program.cpp
+++ b/services/surfaceflinger/RenderEngine/gl/Program.cpp
@@ -14,17 +14,18 @@
  * limitations under the License.
  */
 
+#include "Program.h"
+
 #include <stdint.h>
 
 #include <log/log.h>
-#include <utils/String8.h>
-
 #include <math/mat4.h>
-#include "Description.h"
-#include "Program.h"
+#include <utils/String8.h>
 #include "ProgramCache.h"
 
 namespace android {
+namespace renderengine {
+namespace gl {
 
 Program::Program(const ProgramCache::Key& /*needs*/, const char* vertex, const char* fragment)
       : mInitialized(false) {
@@ -128,28 +129,30 @@
 
     if (mSamplerLoc >= 0) {
         glUniform1i(mSamplerLoc, 0);
-        glUniformMatrix4fv(mTextureMatrixLoc, 1, GL_FALSE, desc.mTexture.getMatrix().asArray());
+        glUniformMatrix4fv(mTextureMatrixLoc, 1, GL_FALSE, desc.texture.getMatrix().asArray());
     }
     if (mColorLoc >= 0) {
-        const float color[4] = {desc.mColor.r, desc.mColor.g, desc.mColor.b, desc.mColor.a};
+        const float color[4] = {desc.color.r, desc.color.g, desc.color.b, desc.color.a};
         glUniform4fv(mColorLoc, 1, color);
     }
     if (mInputTransformMatrixLoc >= 0) {
-        mat4 inputTransformMatrix = mat4(desc.mInputTransformMatrix);
+        mat4 inputTransformMatrix = desc.inputTransformMatrix;
         glUniformMatrix4fv(mInputTransformMatrixLoc, 1, GL_FALSE, inputTransformMatrix.asArray());
     }
     if (mOutputTransformMatrixLoc >= 0) {
         // The output transform matrix and color matrix can be combined as one matrix
         // that is applied right before applying OETF.
-        mat4 outputTransformMatrix = desc.mColorMatrix * desc.mOutputTransformMatrix;
+        mat4 outputTransformMatrix = desc.colorMatrix * desc.outputTransformMatrix;
         glUniformMatrix4fv(mOutputTransformMatrixLoc, 1, GL_FALSE,
                            outputTransformMatrix.asArray());
     }
     if (mDisplayMaxLuminanceLoc >= 0) {
-        glUniform1f(mDisplayMaxLuminanceLoc, desc.mDisplayMaxLuminance);
+        glUniform1f(mDisplayMaxLuminanceLoc, desc.displayMaxLuminance) ;
     }
     // these uniforms are always present
-    glUniformMatrix4fv(mProjectionMatrixLoc, 1, GL_FALSE, desc.mProjectionMatrix.asArray());
+    glUniformMatrix4fv(mProjectionMatrixLoc, 1, GL_FALSE, desc.projectionMatrix.asArray());
 }
 
-} /* namespace android */
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Program.h b/services/surfaceflinger/RenderEngine/gl/Program.h
similarity index 93%
rename from services/surfaceflinger/RenderEngine/Program.h
rename to services/surfaceflinger/RenderEngine/gl/Program.h
index ae796c5..bb429ef 100644
--- a/services/surfaceflinger/RenderEngine/Program.h
+++ b/services/surfaceflinger/RenderEngine/gl/Program.h
@@ -20,14 +20,16 @@
 #include <stdint.h>
 
 #include <GLES2/gl2.h>
-
-#include "Description.h"
+#include <renderengine/private/Description.h>
 #include "ProgramCache.h"
 
 namespace android {
 
 class String8;
 
+namespace renderengine {
+namespace gl {
+
 /*
  * Abstracts a GLSL program comprising a vertex and fragment shader
  */
@@ -86,6 +88,8 @@
     GLint mOutputTransformMatrixLoc;
 };
 
-} /* namespace android */
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
 
 #endif /* SF_RENDER_ENGINE_PROGRAM_H */
diff --git a/services/surfaceflinger/RenderEngine/ProgramCache.cpp b/services/surfaceflinger/RenderEngine/gl/ProgramCache.cpp
similarity index 94%
rename from services/surfaceflinger/RenderEngine/ProgramCache.cpp
rename to services/surfaceflinger/RenderEngine/gl/ProgramCache.cpp
index 9dc6858..c118248 100644
--- a/services/surfaceflinger/RenderEngine/ProgramCache.cpp
+++ b/services/surfaceflinger/RenderEngine/gl/ProgramCache.cpp
@@ -16,18 +16,20 @@
 
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-
-#include <utils/String8.h>
-#include <utils/Trace.h>
-
-#include "Description.h"
-#include "Program.h"
 #include "ProgramCache.h"
 
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <renderengine/private/Description.h>
+#include <utils/String8.h>
+#include <utils/Trace.h>
+#include "Program.h"
+
+ANDROID_SINGLETON_STATIC_INSTANCE(android::renderengine::gl::ProgramCache)
+
 namespace android {
-// -----------------------------------------------------------------------------------------------
+namespace renderengine {
+namespace gl {
 
 /*
  * A simple formatter class to automatically add the endl and
@@ -74,15 +76,11 @@
     return f;
 }
 
-// -----------------------------------------------------------------------------------------------
-
-ANDROID_SINGLETON_STATIC_INSTANCE(ProgramCache)
-
 ProgramCache::ProgramCache() {}
 
 ProgramCache::~ProgramCache() {}
 
-void ProgramCache::primeCache(bool hasWideColor) {
+void ProgramCache::primeCache(bool useColorManagement) {
     uint32_t shaderCount = 0;
     uint32_t keyMask = Key::BLEND_MASK | Key::OPACITY_MASK | Key::ALPHA_MASK | Key::TEXTURE_MASK;
     // Prime the cache for all combinations of the above masks,
@@ -105,7 +103,7 @@
     }
 
     // Prime for sRGB->P3 conversion
-    if (hasWideColor) {
+    if (useColorManagement) {
         Key shaderKey;
         shaderKey.set(Key::BLEND_MASK | Key::TEXTURE_MASK | Key::OUTPUT_TRANSFORM_MATRIX_MASK |
                               Key::INPUT_TF_MASK | Key::OUTPUT_TF_MASK,
@@ -132,19 +130,19 @@
 ProgramCache::Key ProgramCache::computeKey(const Description& description) {
     Key needs;
     needs.set(Key::TEXTURE_MASK,
-              !description.mTextureEnabled
+              !description.textureEnabled
                       ? Key::TEXTURE_OFF
-                      : description.mTexture.getTextureTarget() == GL_TEXTURE_EXTERNAL_OES
+                      : description.texture.getTextureTarget() == GL_TEXTURE_EXTERNAL_OES
                               ? Key::TEXTURE_EXT
-                              : description.mTexture.getTextureTarget() == GL_TEXTURE_2D
+                              : description.texture.getTextureTarget() == GL_TEXTURE_2D
                                       ? Key::TEXTURE_2D
                                       : Key::TEXTURE_OFF)
             .set(Key::ALPHA_MASK,
-                 (description.mColor.a < 1) ? Key::ALPHA_LT_ONE : Key::ALPHA_EQ_ONE)
+                 (description.color.a < 1) ? Key::ALPHA_LT_ONE : Key::ALPHA_EQ_ONE)
             .set(Key::BLEND_MASK,
-                 description.mPremultipliedAlpha ? Key::BLEND_PREMULT : Key::BLEND_NORMAL)
+                 description.isPremultipliedAlpha ? Key::BLEND_PREMULT : Key::BLEND_NORMAL)
             .set(Key::OPACITY_MASK,
-                 description.mOpaque ? Key::OPACITY_OPAQUE : Key::OPACITY_TRANSLUCENT)
+                 description.isOpaque ? Key::OPACITY_OPAQUE : Key::OPACITY_TRANSLUCENT)
             .set(Key::Key::INPUT_TRANSFORM_MATRIX_MASK,
                  description.hasInputTransformMatrix() ?
                      Key::INPUT_TRANSFORM_MATRIX_ON : Key::INPUT_TRANSFORM_MATRIX_OFF)
@@ -153,10 +151,10 @@
                      Key::OUTPUT_TRANSFORM_MATRIX_ON : Key::OUTPUT_TRANSFORM_MATRIX_OFF);
 
     needs.set(Key::Y410_BT2020_MASK,
-              description.mY410BT2020 ? Key::Y410_BT2020_ON : Key::Y410_BT2020_OFF);
+              description.isY410BT2020 ? Key::Y410_BT2020_ON : Key::Y410_BT2020_OFF);
 
     if (needs.hasTransformMatrix() || (needs.getInputTF() != needs.getOutputTF())) {
-        switch (description.mInputTransferFunction) {
+        switch (description.inputTransferFunction) {
             case Description::TransferFunction::LINEAR:
             default:
                 needs.set(Key::INPUT_TF_MASK, Key::INPUT_TF_LINEAR);
@@ -172,7 +170,7 @@
                 break;
         }
 
-        switch (description.mOutputTransferFunction) {
+        switch (description.outputTransferFunction) {
             case Description::TransferFunction::LINEAR:
             default:
                 needs.set(Key::OUTPUT_TF_MASK, Key::OUTPUT_TF_LINEAR);
@@ -318,7 +316,7 @@
 
                             // scale [0.0, maxInLumi] to [0.0, maxOutLumi]
                             if (maxInLumi <= maxOutLumi) {
-                                nits *= maxOutLumi / maxInLumi;
+                                return color * (maxOutLumi / maxInLumi);
                             } else {
                                 // three control points
                                 const float x0 = 10.0;
@@ -339,7 +337,7 @@
                                 if (nits < x0) {
                                     // scale [0.0, x0] to [0.0, y0] linearly
                                     float slope = y0 / x0;
-                                    nits *= slope;
+                                    return color * slope;
                                 } else if (nits < x1) {
                                     // scale [x0, x1] to [y0, y1] linearly
                                     float slope = (y1 - y0) / (x1 - x0);
@@ -357,7 +355,8 @@
                                 }
                             }
 
-                            return color * (nits / max(1e-6, color.y));
+                            // color.y is greater than x0 and is thus non-zero
+                            return color * (nits / color.y);
                         }
                     )__SHADER__";
                     break;
@@ -388,7 +387,7 @@
                     if (nits <= x0) {
                         // scale [0.0, x0] to [0.0, y0] linearly
                         const float slope = y0 / x0;
-                        nits *= slope;
+                        return color * slope;
                     } else if (nits <= x1) {
                         // scale [x0, x1] to [y0, y1] using a curve
                         float t = (nits - x0) / (x1 - x0);
@@ -403,7 +402,8 @@
                         nits = (1.0 - t) * (1.0 - t) * y2 + 2.0 * (1.0 - t) * t * c3 + t * t * y3;
                     }
 
-                    return color * (nits / max(1e-6, color.y));
+                    // color.y is greater than x0 and is thus non-zero
+                    return color * (nits / color.y);
                 }
             )__SHADER__";
             break;
@@ -576,7 +576,7 @@
             fs << "uniform mat4 inputTransformMatrix;";
             fs << R"__SHADER__(
                 highp vec3 InputTransform(const highp vec3 color) {
-                    return vec3(inputTransformMatrix * vec4(color, 1.0));
+                    return clamp(vec3(inputTransformMatrix * vec4(color, 1.0)), 0.0, 1.0);
                 }
             )__SHADER__";
         } else {
@@ -686,4 +686,6 @@
     }
 }
 
-} /* namespace android */
+}  // namespace gl
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/ProgramCache.h b/services/surfaceflinger/RenderEngine/gl/ProgramCache.h
similarity index 95%
rename from services/surfaceflinger/RenderEngine/ProgramCache.h
rename to services/surfaceflinger/RenderEngine/gl/ProgramCache.h
index 983e7ba..47963eb 100644
--- a/services/surfaceflinger/RenderEngine/ProgramCache.h
+++ b/services/surfaceflinger/RenderEngine/gl/ProgramCache.h
@@ -18,19 +18,23 @@
 #define SF_RENDER_ENGINE_PROGRAMCACHE_H
 
 #include <GLES2/gl2.h>
-
+#include <renderengine/private/Description.h>
 #include <utils/KeyedVector.h>
 #include <utils/Singleton.h>
 #include <utils/TypeHelpers.h>
 
-#include "Description.h"
-
 namespace android {
 
-class Description;
+class String8;
+
+namespace renderengine {
+
+struct Description;
+
+namespace gl {
+
 class Formatter;
 class Program;
-class String8;
 
 /*
  * This class generates GLSL programs suitable to handle a given
@@ -161,7 +165,7 @@
     ~ProgramCache();
 
     // Generate shaders to populate the cache
-    void primeCache(bool hasWideColor);
+    void primeCache(bool useColorManagement);
 
     // useProgram lookup a suitable program in the cache or generates one
     // if none can be found.
@@ -190,8 +194,11 @@
     DefaultKeyedVector<Key, Program*> mCache;
 };
 
-ANDROID_BASIC_TYPES_TRAITS(ProgramCache::Key)
+}  // namespace gl
+}  // namespace renderengine
 
-} /* namespace android */
+ANDROID_BASIC_TYPES_TRAITS(renderengine::gl::ProgramCache::Key)
+
+}  // namespace android
 
 #endif /* SF_RENDER_ENGINE_PROGRAMCACHE_H */
diff --git a/services/surfaceflinger/RenderEngine/include/renderengine/Framebuffer.h b/services/surfaceflinger/RenderEngine/include/renderengine/Framebuffer.h
new file mode 100644
index 0000000..6595466
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/Framebuffer.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+struct ANativeWindowBuffer;
+
+namespace android {
+namespace renderengine {
+
+class Framebuffer {
+public:
+    virtual ~Framebuffer() = default;
+
+    virtual bool setNativeWindowBuffer(ANativeWindowBuffer* nativeBuffer) = 0;
+};
+
+}   // namespace renderengine
+}   // namespace android
diff --git a/services/surfaceflinger/RenderEngine/include/renderengine/Image.h b/services/surfaceflinger/RenderEngine/include/renderengine/Image.h
new file mode 100644
index 0000000..85ec91a
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/Image.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+struct ANativeWindowBuffer;
+
+namespace android {
+namespace renderengine {
+
+class Image {
+public:
+    virtual ~Image() = default;
+    virtual bool setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected) = 0;
+};
+
+}  // namespace renderengine
+}  // namespace android
+
diff --git a/services/surfaceflinger/RenderEngine/Mesh.h b/services/surfaceflinger/RenderEngine/include/renderengine/Mesh.h
similarity index 96%
rename from services/surfaceflinger/RenderEngine/Mesh.h
rename to services/surfaceflinger/RenderEngine/include/renderengine/Mesh.h
index d0a9ac0..39ca2f7 100644
--- a/services/surfaceflinger/RenderEngine/Mesh.h
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/Mesh.h
@@ -20,6 +20,7 @@
 #include <stdint.h>
 
 namespace android {
+namespace renderengine {
 
 class Mesh {
 public:
@@ -97,5 +98,6 @@
     Primitive mPrimitive;
 };
 
-} /* namespace android */
+}  // namespace renderengine
+}  // namespace android
 #endif /* SF_RENDER_ENGINE_MESH_H */
diff --git a/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h b/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h
new file mode 100644
index 0000000..122271f
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SF_RENDERENGINE_H_
+#define SF_RENDERENGINE_H_
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <memory>
+
+#include <android-base/unique_fd.h>
+#include <math/mat4.h>
+#include <renderengine/Framebuffer.h>
+#include <renderengine/Image.h>
+#include <ui/GraphicTypes.h>
+#include <ui/Transform.h>
+
+/**
+ * Allows to set RenderEngine backend to GLES (default) or Vulkan (NOT yet supported).
+ */
+#define PROPERTY_DEBUG_RENDERENGINE_BACKEND "debug.renderengine.backend"
+
+struct ANativeWindowBuffer;
+
+namespace android {
+
+class String8;
+class Rect;
+class Region;
+
+namespace renderengine {
+
+class BindNativeBufferAsFramebuffer;
+class Image;
+class Mesh;
+class Surface;
+class Texture;
+
+namespace impl {
+class RenderEngine;
+}
+
+class RenderEngine {
+public:
+    enum FeatureFlag {
+        USE_COLOR_MANAGEMENT = 1 << 0, // Device manages color
+        USE_HIGH_PRIORITY_CONTEXT = 1 << 1, // Use high priority context
+    };
+
+    static std::unique_ptr<impl::RenderEngine> create(int hwcFormat, uint32_t featureFlags);
+
+    virtual ~RenderEngine() = 0;
+
+    virtual std::unique_ptr<Framebuffer> createFramebuffer() = 0;
+    virtual std::unique_ptr<Surface> createSurface() = 0;
+    virtual std::unique_ptr<Image> createImage() = 0;
+
+    virtual void primeCache() const = 0;
+
+    // dump the extension strings. always call the base class.
+    virtual void dump(String8& result) = 0;
+
+    virtual bool useNativeFenceSync() const = 0;
+    virtual bool useWaitSync() const = 0;
+
+    virtual bool isCurrent() const = 0;
+    virtual bool setCurrentSurface(const Surface& surface) = 0;
+    virtual void resetCurrentSurface() = 0;
+
+    // helpers
+    // flush submits RenderEngine command stream for execution and returns a
+    // native fence fd that is signaled when the execution has completed.  It
+    // returns -1 on errors.
+    virtual base::unique_fd flush() = 0;
+    // finish waits until RenderEngine command stream has been executed.  It
+    // returns false on errors.
+    virtual bool finish() = 0;
+    // waitFence inserts a wait on an external fence fd to RenderEngine
+    // command stream.  It returns false on errors.
+    virtual bool waitFence(base::unique_fd fenceFd) = 0;
+
+    virtual void clearWithColor(float red, float green, float blue, float alpha) = 0;
+    virtual void fillRegionWithColor(const Region& region, float red, float green,
+                                     float blue, float alpha) = 0;
+
+    virtual void setScissor(const Rect& region) = 0;
+    virtual void disableScissor() = 0;
+    virtual void genTextures(size_t count, uint32_t* names) = 0;
+    virtual void deleteTextures(size_t count, uint32_t const* names) = 0;
+    virtual void bindExternalTextureImage(uint32_t texName, const Image& image) = 0;
+    // When binding a native buffer, it must be done before setViewportAndProjection
+    // Returns NO_ERROR when binds successfully, NO_MEMORY when there's no memory for allocation.
+    virtual status_t bindFrameBuffer(Framebuffer* framebuffer) = 0;
+    virtual void unbindFrameBuffer(Framebuffer* framebuffer) = 0;
+
+    // set-up
+    virtual void checkErrors() const = 0;
+    virtual void setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
+                                          ui::Transform::orientation_flags rotation) = 0;
+    virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
+                                    const half4& color) = 0;
+    virtual void setupLayerTexturing(const Texture& texture) = 0;
+    virtual void setupLayerBlackedOut() = 0;
+    virtual void setupFillWithColor(float r, float g, float b, float a) = 0;
+
+    // Set a color transform matrix that is applied in linear space right before OETF.
+    virtual void setColorTransform(const mat4& /* colorTransform */) = 0;
+    virtual void disableTexturing() = 0;
+    virtual void disableBlending() = 0;
+
+    // HDR and color management support
+    virtual void setSourceY410BT2020(bool enable) = 0;
+    virtual void setSourceDataSpace(ui::Dataspace source) = 0;
+    virtual void setOutputDataSpace(ui::Dataspace dataspace) = 0;
+    virtual void setDisplayMaxLuminance(const float maxLuminance) = 0;
+
+    // drawing
+    virtual void drawMesh(const Mesh& mesh) = 0;
+
+    // queries
+    virtual size_t getMaxTextureSize() const = 0;
+    virtual size_t getMaxViewportDims() const = 0;
+};
+
+class BindNativeBufferAsFramebuffer {
+public:
+    BindNativeBufferAsFramebuffer(RenderEngine& engine, ANativeWindowBuffer* buffer)
+          : mEngine(engine),
+            mFramebuffer(mEngine.createFramebuffer()),
+            mStatus(NO_ERROR) {
+        mStatus = mFramebuffer->setNativeWindowBuffer(buffer) ?
+                  mEngine.bindFrameBuffer(mFramebuffer.get()) : NO_MEMORY;
+    }
+    ~BindNativeBufferAsFramebuffer() {
+        mFramebuffer->setNativeWindowBuffer(nullptr);
+        mEngine.unbindFrameBuffer(mFramebuffer.get());
+    }
+    status_t getStatus() const { return mStatus; }
+
+private:
+    RenderEngine& mEngine;
+    std::unique_ptr<Framebuffer> mFramebuffer;
+    status_t mStatus;
+};
+
+namespace impl {
+
+// impl::RenderEngine contains common implementation that is graphics back-end agnostic.
+class RenderEngine : public renderengine::RenderEngine {
+public:
+    virtual ~RenderEngine() = 0;
+
+    bool useNativeFenceSync() const override;
+    bool useWaitSync() const override;
+
+protected:
+    RenderEngine(uint32_t featureFlags);
+    const uint32_t mFeatureFlags;
+};
+
+}  // namespace impl
+}  // namespace renderengine
+}  // namespace android
+
+#endif /* SF_RENDERENGINE_H_ */
diff --git a/services/surfaceflinger/RenderEngine/include/renderengine/Surface.h b/services/surfaceflinger/RenderEngine/include/renderengine/Surface.h
new file mode 100644
index 0000000..3999ddc
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/Surface.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+struct ANativeWindow;
+
+namespace android {
+namespace renderengine {
+
+class Surface {
+public:
+    virtual ~Surface() = default;
+
+    virtual void setCritical(bool enable) = 0;
+    virtual void setAsync(bool enable) = 0;
+
+    virtual void setNativeWindow(ANativeWindow* window) = 0;
+    virtual void swapBuffers() const = 0;
+
+    virtual int32_t queryRedSize() const = 0;
+    virtual int32_t queryGreenSize() const = 0;
+    virtual int32_t queryBlueSize() const = 0;
+    virtual int32_t queryAlphaSize() const = 0;
+
+    virtual int32_t getWidth() const = 0;
+    virtual int32_t getHeight() const = 0;
+};
+
+}  // namespace renderengine
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/Texture.h b/services/surfaceflinger/RenderEngine/include/renderengine/Texture.h
similarity index 94%
rename from services/surfaceflinger/RenderEngine/Texture.h
rename to services/surfaceflinger/RenderEngine/include/renderengine/Texture.h
index 56b6b31..fb3e0cc 100644
--- a/services/surfaceflinger/RenderEngine/Texture.h
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/Texture.h
@@ -14,22 +14,17 @@
  * limitations under the License.
  */
 
-#include <math/mat4.h>
-#include <stdint.h>
-
 #ifndef SF_RENDER_ENGINE_TEXTURE_H
 #define SF_RENDER_ENGINE_TEXTURE_H
 
+#include <stdint.h>
+
+#include <math/mat4.h>
+
 namespace android {
+namespace renderengine {
 
 class Texture {
-    uint32_t mTextureName;
-    uint32_t mTextureTarget;
-    size_t mWidth;
-    size_t mHeight;
-    bool mFiltering;
-    mat4 mTextureMatrix;
-
 public:
     enum Target { TEXTURE_2D = 0x0DE1, TEXTURE_EXTERNAL = 0x8D65 };
 
@@ -50,7 +45,16 @@
     bool getFiltering() const;
     size_t getWidth() const;
     size_t getHeight() const;
+
+private:
+    uint32_t mTextureName;
+    uint32_t mTextureTarget;
+    size_t mWidth;
+    size_t mHeight;
+    bool mFiltering;
+    mat4 mTextureMatrix;
 };
 
-} /* namespace android */
+}  // namespace renderengine
+}  // namespace android
 #endif /* SF_RENDER_ENGINE_TEXTURE_H */
diff --git a/services/surfaceflinger/RenderEngine/include/renderengine/private/Description.h b/services/surfaceflinger/RenderEngine/include/renderengine/private/Description.h
new file mode 100644
index 0000000..911bb7a
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/private/Description.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SF_RENDER_ENGINE_DESCRIPTION_H_
+#define SF_RENDER_ENGINE_DESCRIPTION_H_
+
+#include <ui/GraphicTypes.h>
+#include <renderengine/Texture.h>
+
+namespace android {
+namespace renderengine {
+
+/*
+ * This is the structure that holds the state of the rendering engine.
+ * This class is used to generate a corresponding GLSL program and set the
+ * appropriate uniform.
+ */
+struct Description {
+    enum class TransferFunction : int {
+        LINEAR,
+        SRGB,
+        ST2084,
+        HLG,  // Hybrid Log-Gamma for HDR.
+    };
+
+    static TransferFunction dataSpaceToTransferFunction(ui::Dataspace dataSpace);
+
+    Description() = default;
+    ~Description() = default;
+
+    bool hasInputTransformMatrix() const;
+    bool hasOutputTransformMatrix() const;
+    bool hasColorMatrix() const;
+
+    // whether textures are premultiplied
+    bool isPremultipliedAlpha = false;
+    // whether this layer is marked as opaque
+    bool isOpaque = true;
+
+    // Texture this layer uses
+    Texture texture;
+    bool textureEnabled = false;
+
+    // color used when texturing is disabled or when setting alpha.
+    half4 color;
+
+    // true if the sampled pixel values are in Y410/BT2020 rather than RGBA
+    bool isY410BT2020 = false;
+
+    // transfer functions for the input/output
+    TransferFunction inputTransferFunction = TransferFunction::LINEAR;
+    TransferFunction outputTransferFunction = TransferFunction::LINEAR;
+
+    float displayMaxLuminance;
+
+    // projection matrix
+    mat4 projectionMatrix;
+
+    // The color matrix will be applied in linear space right before OETF.
+    mat4 colorMatrix;
+    mat4 inputTransformMatrix;
+    mat4 outputTransformMatrix;
+};
+
+}  // namespace renderengine
+}  // namespace android
+
+#endif /* SF_RENDER_ENGINE_DESCRIPTION_H_ */
diff --git a/services/surfaceflinger/DispSync.cpp b/services/surfaceflinger/Scheduler/DispSync.cpp
similarity index 88%
rename from services/surfaceflinger/DispSync.cpp
rename to services/surfaceflinger/Scheduler/DispSync.cpp
index 37dc27d..54a1b51 100644
--- a/services/surfaceflinger/DispSync.cpp
+++ b/services/surfaceflinger/Scheduler/DispSync.cpp
@@ -28,7 +28,6 @@
 #include <utils/String8.h>
 #include <utils/Thread.h>
 #include <utils/Trace.h>
-#include <utils/Vector.h>
 
 #include <ui/FenceTime.h>
 
@@ -41,6 +40,10 @@
 
 namespace android {
 
+DispSync::~DispSync() = default;
+
+namespace impl {
+
 // Setting this to true enables verbose tracing that can be used to debug
 // vsync event model or phase issues.
 static const bool kTraceDetailedInfo = false;
@@ -94,7 +97,7 @@
         nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
 
         while (true) {
-            Vector<CallbackInvocation> callbackInvocations;
+            std::vector<CallbackInvocation> callbackInvocations;
 
             nsecs_t targetTime = 0;
 
@@ -187,7 +190,7 @@
         // allowing any past events to fire
         listener.mLastEventTime = systemTime() - mPeriod / 2 + mPhase - mWakeupLatency;
 
-        mEventListeners.push(listener);
+        mEventListeners.push_back(listener);
 
         mCond.signal();
 
@@ -198,9 +201,10 @@
         if (kTraceDetailedInfo) ATRACE_CALL();
         Mutex::Autolock lock(mMutex);
 
-        for (size_t i = 0; i < mEventListeners.size(); i++) {
-            if (mEventListeners[i].mCallback == callback) {
-                mEventListeners.removeAt(i);
+        for (std::vector<EventListener>::iterator it = mEventListeners.begin();
+             it != mEventListeners.end(); ++it) {
+            if (it->mCallback == callback) {
+                mEventListeners.erase(it);
                 mCond.signal();
                 return NO_ERROR;
             }
@@ -213,11 +217,10 @@
         if (kTraceDetailedInfo) ATRACE_CALL();
         Mutex::Autolock lock(mMutex);
 
-        for (size_t i = 0; i < mEventListeners.size(); i++) {
-            if (mEventListeners[i].mCallback == callback) {
-                EventListener& listener = mEventListeners.editItemAt(i);
-                const nsecs_t oldPhase = listener.mPhase;
-                listener.mPhase = phase;
+        for (auto& eventListener : mEventListeners) {
+            if (eventListener.mCallback == callback) {
+                const nsecs_t oldPhase = eventListener.mPhase;
+                eventListener.mPhase = phase;
 
                 // Pretend that the last time this event was handled at the same frame but with the
                 // new offset to allow for a seamless offset change without double-firing or
@@ -228,7 +231,7 @@
                 } else if (diff < -mPeriod / 2) {
                     diff += mPeriod;
                 }
-                listener.mLastEventTime -= diff;
+                eventListener.mLastEventTime -= diff;
                 mCond.signal();
                 return NO_ERROR;
             }
@@ -237,14 +240,6 @@
         return BAD_VALUE;
     }
 
-    // This method is only here to handle the !SurfaceFlinger::hasSyncFramework
-    // case.
-    bool hasAnyEventListeners() {
-        if (kTraceDetailedInfo) ATRACE_CALL();
-        Mutex::Autolock lock(mMutex);
-        return !mEventListeners.empty();
-    }
-
 private:
     struct EventListener {
         const char* mName;
@@ -274,23 +269,23 @@
         return nextEventTime;
     }
 
-    Vector<CallbackInvocation> gatherCallbackInvocationsLocked(nsecs_t now) {
+    std::vector<CallbackInvocation> gatherCallbackInvocationsLocked(nsecs_t now) {
         if (kTraceDetailedInfo) ATRACE_CALL();
         ALOGV("[%s] gatherCallbackInvocationsLocked @ %" PRId64, mName, ns2us(now));
 
-        Vector<CallbackInvocation> callbackInvocations;
+        std::vector<CallbackInvocation> callbackInvocations;
         nsecs_t onePeriodAgo = now - mPeriod;
 
-        for (size_t i = 0; i < mEventListeners.size(); i++) {
-            nsecs_t t = computeListenerNextEventTimeLocked(mEventListeners[i], onePeriodAgo);
+        for (auto& eventListener : mEventListeners) {
+            nsecs_t t = computeListenerNextEventTimeLocked(eventListener, onePeriodAgo);
 
             if (t < now) {
                 CallbackInvocation ci;
-                ci.mCallback = mEventListeners[i].mCallback;
+                ci.mCallback = eventListener.mCallback;
                 ci.mEventTime = t;
-                ALOGV("[%s] [%s] Preparing to fire", mName, mEventListeners[i].mName);
-                callbackInvocations.push(ci);
-                mEventListeners.editItemAt(i).mLastEventTime = t;
+                ALOGV("[%s] [%s] Preparing to fire", mName, eventListener.mName);
+                callbackInvocations.push_back(ci);
+                eventListener.mLastEventTime = t;
             }
         }
 
@@ -348,7 +343,7 @@
         return t;
     }
 
-    void fireCallbackInvocations(const Vector<CallbackInvocation>& callbacks) {
+    void fireCallbackInvocations(const std::vector<CallbackInvocation>& callbacks) {
         if (kTraceDetailedInfo) ATRACE_CALL();
         for (size_t i = 0; i < callbacks.size(); i++) {
             callbacks[i].mCallback->onDispSyncEvent(callbacks[i].mEventTime);
@@ -366,7 +361,7 @@
 
     int64_t mFrameNumber;
 
-    Vector<EventListener> mEventListeners;
+    std::vector<EventListener> mEventListeners;
 
     Mutex mMutex;
     Condition mCond;
@@ -408,22 +403,18 @@
     reset();
     beginResync();
 
-    if (kTraceDetailedInfo) {
-        // If we're not getting present fences then the ZeroPhaseTracer
-        // would prevent HW vsync event from ever being turned off.
-        // Even if we're just ignoring the fences, the zero-phase tracing is
-        // not needed because any time there is an event registered we will
-        // turn on the HW vsync events.
-        if (!mIgnorePresentFences && kEnableZeroPhaseTracer) {
-            mZeroPhaseTracer = std::make_unique<ZeroPhaseTracer>();
-            addEventListener("ZeroPhaseTracer", 0, mZeroPhaseTracer.get());
-        }
+    if (kTraceDetailedInfo && kEnableZeroPhaseTracer) {
+        mZeroPhaseTracer = std::make_unique<ZeroPhaseTracer>();
+        addEventListener("ZeroPhaseTracer", 0, mZeroPhaseTracer.get());
     }
 }
 
 void DispSync::reset() {
     Mutex::Autolock lock(mMutex);
+    resetLocked();
+}
 
+void DispSync::resetLocked() {
     mPhase = 0;
     mReferenceTime = 0;
     mModelUpdated = false;
@@ -436,6 +427,10 @@
 bool DispSync::addPresentFence(const std::shared_ptr<FenceTime>& fenceTime) {
     Mutex::Autolock lock(mMutex);
 
+    if (mIgnorePresentFences) {
+        return true;
+    }
+
     mPresentFences[mPresentSampleOffset] = fenceTime;
     mPresentSampleOffset = (mPresentSampleOffset + 1) % NUM_PRESENT_SAMPLES;
     mNumResyncSamplesSincePresent = 0;
@@ -481,12 +476,10 @@
     }
 
     if (mIgnorePresentFences) {
-        // If we don't have the sync framework we will never have
-        // addPresentFence called.  This means we have no way to know whether
+        // If we're ignoring the present fences we have no way to know whether
         // or not we're synchronized with the HW vsyncs, so we just request
-        // that the HW vsync events be turned on whenever we need to generate
-        // SW vsync events.
-        return mThread->hasAnyEventListeners();
+        // that the HW vsync events be turned on.
+        return true;
     }
 
     // Check against kErrorThreshold / 2 to add some hysteresis before having to
@@ -522,12 +515,27 @@
 
 void DispSync::setPeriod(nsecs_t period) {
     Mutex::Autolock lock(mMutex);
-    mPeriod = period;
+    mPeriodBase = mPeriod = period;
     mPhase = 0;
     mReferenceTime = 0;
     mThread->updateModel(mPeriod, mPhase, mReferenceTime);
 }
 
+void DispSync::scalePeriod(HWC2::Device::FrequencyScaler frequencyScaler) {
+    Mutex::Autolock lock(mMutex);
+
+    // if only 1 of the properties is updated, we will get to this
+    // point "attempting" to set the scale to 1 when it is already
+    // 1.  Check that special case so that we don't do a useless
+    // update of the model.
+    if ((frequencyScaler.multiplier == 1) &&
+            (frequencyScaler.divisor == 1) &&
+            (mPeriod == mPeriodBase)) return;
+
+    mPeriod = mPeriodBase * frequencyScaler.multiplier / frequencyScaler.divisor;
+    mThread->updateModel(mPeriod, mPhase, mReferenceTime);
+}
+
 nsecs_t DispSync::getPeriod() {
     // lock mutex as mPeriod changes multiple times in updateModelLocked
     Mutex::Autolock lock(mMutex);
@@ -552,7 +560,7 @@
 
         // Exclude the min and max from the average
         durationSum -= minDuration + maxDuration;
-        mPeriod = durationSum / (mNumResyncSamples - 3);
+        mPeriodBase = mPeriod = durationSum / (mNumResyncSamples - 3);
 
         ALOGV("[%s] mPeriod = %" PRId64, mName, ns2us(mPeriod));
 
@@ -660,6 +668,14 @@
     return (((now - phase) / mPeriod) + periodOffset + 1) * mPeriod + phase;
 }
 
+void DispSync::setIgnorePresentFences(bool ignore) {
+    Mutex::Autolock lock(mMutex);
+    if (mIgnorePresentFences != ignore) {
+        mIgnorePresentFences = ignore;
+        resetLocked();
+    }
+}
+
 void DispSync::dump(String8& result) const {
     Mutex::Autolock lock(mMutex);
     result.appendFormat("present fences are %s\n", mIgnorePresentFences ? "ignored" : "used");
@@ -710,4 +726,6 @@
     result.appendFormat("current monotonic time: %" PRId64 "\n", now);
 }
 
+} // namespace impl
+
 } // namespace android
diff --git a/services/surfaceflinger/DispSync.h b/services/surfaceflinger/Scheduler/DispSync.h
similarity index 75%
rename from services/surfaceflinger/DispSync.h
rename to services/surfaceflinger/Scheduler/DispSync.h
index 077256a..b3aef2d 100644
--- a/services/surfaceflinger/DispSync.h
+++ b/services/surfaceflinger/Scheduler/DispSync.h
@@ -24,6 +24,7 @@
 #include <utils/Timers.h>
 
 #include <ui/FenceTime.h>
+#include <DisplayHardware/HWC2.h>
 
 #include <memory>
 
@@ -31,6 +32,37 @@
 
 class String8;
 class FenceTime;
+
+class DispSync {
+public:
+    class Callback {
+    public:
+        virtual ~Callback() = default;
+        virtual void onDispSyncEvent(nsecs_t when) = 0;
+    };
+
+    virtual ~DispSync();
+
+    virtual void reset() = 0;
+    virtual bool addPresentFence(const std::shared_ptr<FenceTime>&) = 0;
+    virtual void beginResync() = 0;
+    virtual bool addResyncSample(nsecs_t timestamp) = 0;
+    virtual void endResync() = 0;
+    virtual void setPeriod(nsecs_t period) = 0;
+    virtual void scalePeriod(HWC2::Device::FrequencyScaler) = 0;
+    virtual nsecs_t getPeriod() = 0;
+    virtual void setRefreshSkipCount(int count) = 0;
+    virtual status_t addEventListener(const char* name, nsecs_t phase, Callback* callback) = 0;
+    virtual status_t removeEventListener(Callback* callback) = 0;
+    virtual status_t changePhaseOffset(Callback* callback, nsecs_t phase) = 0;
+    virtual nsecs_t computeNextRefresh(int periodOffset) const = 0;
+    virtual void setIgnorePresentFences(bool ignore) = 0;
+
+    virtual void dump(String8& result) const = 0;
+};
+
+namespace impl {
+
 class DispSyncThread;
 
 // DispSync maintains a model of the periodic hardware-based vsync events of a
@@ -46,21 +78,15 @@
 // current model accurately represents the hardware event times it will return
 // false to indicate that a resynchronization (via addResyncSample) is not
 // needed.
-class DispSync {
+class DispSync : public android::DispSync {
 public:
-    class Callback {
-    public:
-        virtual ~Callback(){};
-        virtual void onDispSyncEvent(nsecs_t when) = 0;
-    };
-
     explicit DispSync(const char* name);
-    ~DispSync();
+    ~DispSync() override;
 
     void init(bool hasSyncFramework, int64_t dispSyncPresentTimeOffset);
 
     // reset clears the resync samples and error value.
-    void reset();
+    void reset() override;
 
     // addPresentFence adds a fence for use in validating the current vsync
     // event model.  The fence need not be signaled at the time
@@ -71,7 +97,7 @@
     //
     // This method should be called with the retire fence from each HWComposer
     // set call that affects the display.
-    bool addPresentFence(const std::shared_ptr<FenceTime>& fenceTime);
+    bool addPresentFence(const std::shared_ptr<FenceTime>& fenceTime) override;
 
     // The beginResync, addResyncSample, and endResync methods are used to re-
     // synchronize the DispSync's model to the hardware vsync events.  The re-
@@ -84,52 +110,67 @@
     // is turned on (i.e. once immediately after it's turned on) and whenever
     // addPresentFence returns true indicating that the model has drifted away
     // from the hardware vsync events.
-    void beginResync();
-    bool addResyncSample(nsecs_t timestamp);
-    void endResync();
+    void beginResync() override;
+    bool addResyncSample(nsecs_t timestamp) override;
+    void endResync() override;
 
     // The setPeriod method sets the vsync event model's period to a specific
     // value.  This should be used to prime the model when a display is first
     // turned on.  It should NOT be used after that.
-    void setPeriod(nsecs_t period);
+    void setPeriod(nsecs_t period) override;
+
+    // The scalePeriod method applies the multiplier and divisor to
+    // scale the vsync event model's period.   The function is added
+    // for an experimental test mode and should not be used outside
+    // of that purpose.
+    void scalePeriod(HWC2::Device::FrequencyScaler frequencyScaler);
 
     // The getPeriod method returns the current vsync period.
-    nsecs_t getPeriod();
+    nsecs_t getPeriod() override;
 
     // setRefreshSkipCount specifies an additional number of refresh
     // cycles to skip.  For example, on a 60Hz display, a skip count of 1
     // will result in events happening at 30Hz.  Default is zero.  The idea
     // is to sacrifice smoothness for battery life.
-    void setRefreshSkipCount(int count);
+    void setRefreshSkipCount(int count) override;
 
     // addEventListener registers a callback to be called repeatedly at the
     // given phase offset from the hardware vsync events.  The callback is
     // called from a separate thread and it should return reasonably quickly
     // (i.e. within a few hundred microseconds).
-    status_t addEventListener(const char* name, nsecs_t phase, Callback* callback);
+    status_t addEventListener(const char* name, nsecs_t phase, Callback* callback) override;
 
     // removeEventListener removes an already-registered event callback.  Once
     // this method returns that callback will no longer be called by the
     // DispSync object.
-    status_t removeEventListener(Callback* callback);
+    status_t removeEventListener(Callback* callback) override;
 
     // changePhaseOffset changes the phase offset of an already-registered event callback. The
     // method will make sure that there is no skipping or double-firing on the listener per frame,
     // even when changing the offsets multiple times.
-    status_t changePhaseOffset(Callback* callback, nsecs_t phase);
+    status_t changePhaseOffset(Callback* callback, nsecs_t phase) override;
 
     // computeNextRefresh computes when the next refresh is expected to begin.
     // The periodOffset value can be used to move forward or backward; an
     // offset of zero is the next refresh, -1 is the previous refresh, 1 is
     // the refresh after next. etc.
-    nsecs_t computeNextRefresh(int periodOffset) const;
+    nsecs_t computeNextRefresh(int periodOffset) const override;
+
+    // In certain situations the present fences aren't a good indicator of vsync
+    // time, e.g. when vr flinger is active, or simply aren't available,
+    // e.g. when the sync framework isn't present. Use this method to toggle
+    // whether or not DispSync ignores present fences. If present fences are
+    // ignored, DispSync will always ask for hardware vsync events by returning
+    // true from addPresentFence() and addResyncSample().
+    void setIgnorePresentFences(bool ignore) override;
 
     // dump appends human-readable debug info to the result string.
-    void dump(String8& result) const;
+    void dump(String8& result) const override;
 
 private:
     void updateModelLocked();
     void updateErrorLocked();
+    void resetLocked();
     void resetErrorLocked();
 
     enum { MAX_RESYNC_SAMPLES = 32 };
@@ -143,6 +184,7 @@
     // mPeriod is the computed period of the modeled vsync events in
     // nanoseconds.
     nsecs_t mPeriod;
+    nsecs_t mPeriodBase;
 
     // mPhase is the phase offset of the modeled vsync events.  It is the
     // number of nanoseconds from time 0 to the first vsync event.
@@ -197,6 +239,8 @@
     std::unique_ptr<Callback> mZeroPhaseTracer;
 };
 
+} // namespace impl
+
 } // namespace android
 
 #endif // ANDROID_DISPSYNC_H
diff --git a/services/surfaceflinger/Scheduler/DispSyncSource.cpp b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
new file mode 100644
index 0000000..697d634
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "DispSyncSource.h"
+
+#include <android-base/stringprintf.h>
+#include <utils/Trace.h>
+#include <mutex>
+
+#include "DispSync.h"
+#include "EventThread.h"
+
+namespace android {
+
+DispSyncSource::DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync,
+                               const char* name)
+      : mName(name),
+        mTraceVsync(traceVsync),
+        mVsyncOnLabel(base::StringPrintf("VsyncOn-%s", name)),
+        mVsyncEventLabel(base::StringPrintf("VSYNC-%s", name)),
+        mDispSync(dispSync),
+        mPhaseOffset(phaseOffset) {}
+
+void DispSyncSource::setVSyncEnabled(bool enable) {
+    std::lock_guard lock(mVsyncMutex);
+    if (enable) {
+        status_t err = mDispSync->addEventListener(mName, mPhaseOffset,
+                                                   static_cast<DispSync::Callback*>(this));
+        if (err != NO_ERROR) {
+            ALOGE("error registering vsync callback: %s (%d)", strerror(-err), err);
+        }
+        // ATRACE_INT(mVsyncOnLabel.c_str(), 1);
+    } else {
+        status_t err = mDispSync->removeEventListener(static_cast<DispSync::Callback*>(this));
+        if (err != NO_ERROR) {
+            ALOGE("error unregistering vsync callback: %s (%d)", strerror(-err), err);
+        }
+        // ATRACE_INT(mVsyncOnLabel.c_str(), 0);
+    }
+    mEnabled = enable;
+}
+
+void DispSyncSource::setCallback(VSyncSource::Callback* callback) {
+    std::lock_guard lock(mCallbackMutex);
+    mCallback = callback;
+}
+
+void DispSyncSource::setPhaseOffset(nsecs_t phaseOffset) {
+    std::lock_guard lock(mVsyncMutex);
+
+    // Normalize phaseOffset to [0, period)
+    auto period = mDispSync->getPeriod();
+    phaseOffset %= period;
+    if (phaseOffset < 0) {
+        // If we're here, then phaseOffset is in (-period, 0). After this
+        // operation, it will be in (0, period)
+        phaseOffset += period;
+    }
+    mPhaseOffset = phaseOffset;
+
+    // If we're not enabled, we don't need to mess with the listeners
+    if (!mEnabled) {
+        return;
+    }
+
+    status_t err =
+            mDispSync->changePhaseOffset(static_cast<DispSync::Callback*>(this), mPhaseOffset);
+    if (err != NO_ERROR) {
+        ALOGE("error changing vsync offset: %s (%d)", strerror(-err), err);
+    }
+}
+
+void DispSyncSource::onDispSyncEvent(nsecs_t when) {
+    VSyncSource::Callback* callback;
+    {
+        std::lock_guard lock(mCallbackMutex);
+        callback = mCallback;
+
+        if (mTraceVsync) {
+            mValue = (mValue + 1) % 2;
+            ATRACE_INT(mVsyncEventLabel.c_str(), mValue);
+        }
+    }
+
+    if (callback != nullptr) {
+        callback->onVSyncEvent(when);
+    }
+}
+
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/Scheduler/DispSyncSource.h b/services/surfaceflinger/Scheduler/DispSyncSource.h
new file mode 100644
index 0000000..0fd84a2
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/DispSyncSource.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <mutex>
+#include <string>
+
+#include "DispSync.h"
+#include "EventThread.h"
+
+namespace android {
+
+class DispSyncSource final : public VSyncSource, private DispSync::Callback {
+public:
+    DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync, const char* name);
+
+    ~DispSyncSource() override = default;
+
+    // The following methods are implementation of VSyncSource.
+    void setVSyncEnabled(bool enable) override;
+    void setCallback(VSyncSource::Callback* callback) override;
+    void setPhaseOffset(nsecs_t phaseOffset) override;
+
+private:
+    // The following method is the implementation of the DispSync::Callback.
+    virtual void onDispSyncEvent(nsecs_t when);
+
+    const char* const mName;
+    int mValue = 0;
+
+    const bool mTraceVsync;
+    const std::string mVsyncOnLabel;
+    const std::string mVsyncEventLabel;
+
+    DispSync* mDispSync;
+
+    std::mutex mCallbackMutex;
+    VSyncSource::Callback* mCallback GUARDED_BY(mCallbackMutex) = nullptr;
+
+    std::mutex mVsyncMutex;
+    nsecs_t mPhaseOffset GUARDED_BY(mVsyncMutex);
+    bool mEnabled GUARDED_BY(mVsyncMutex) = false;
+};
+
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/EventControlThread.cpp b/services/surfaceflinger/Scheduler/EventControlThread.cpp
similarity index 100%
rename from services/surfaceflinger/EventControlThread.cpp
rename to services/surfaceflinger/Scheduler/EventControlThread.cpp
diff --git a/services/surfaceflinger/EventControlThread.h b/services/surfaceflinger/Scheduler/EventControlThread.h
similarity index 100%
rename from services/surfaceflinger/EventControlThread.h
rename to services/surfaceflinger/Scheduler/EventControlThread.h
diff --git a/services/surfaceflinger/EventThread.cpp b/services/surfaceflinger/Scheduler/EventThread.cpp
similarity index 78%
rename from services/surfaceflinger/EventThread.cpp
rename to services/surfaceflinger/Scheduler/EventThread.cpp
index bc271c8..9bee9a3 100644
--- a/services/surfaceflinger/EventThread.cpp
+++ b/services/surfaceflinger/Scheduler/EventThread.cpp
@@ -45,11 +45,27 @@
 
 namespace impl {
 
+EventThread::EventThread(std::unique_ptr<VSyncSource> src,
+                         ResyncWithRateLimitCallback resyncWithRateLimitCallback,
+                         InterceptVSyncsCallback interceptVSyncsCallback, const char* threadName)
+      : EventThread(nullptr, std::move(src), resyncWithRateLimitCallback, interceptVSyncsCallback,
+                    threadName) {}
+
 EventThread::EventThread(VSyncSource* src, ResyncWithRateLimitCallback resyncWithRateLimitCallback,
                          InterceptVSyncsCallback interceptVSyncsCallback, const char* threadName)
+      : EventThread(src, nullptr, resyncWithRateLimitCallback, interceptVSyncsCallback,
+                    threadName) {}
+
+EventThread::EventThread(VSyncSource* src, std::unique_ptr<VSyncSource> uniqueSrc,
+                         ResyncWithRateLimitCallback resyncWithRateLimitCallback,
+                         InterceptVSyncsCallback interceptVSyncsCallback, const char* threadName)
       : mVSyncSource(src),
+        mVSyncSourceUnique(std::move(uniqueSrc)),
         mResyncWithRateLimitCallback(resyncWithRateLimitCallback),
         mInterceptVSyncsCallback(interceptVSyncsCallback) {
+    if (src == nullptr) {
+        mVSyncSource = mVSyncSourceUnique.get();
+    }
     for (auto& event : mVSyncEvent) {
         event.header.type = DisplayEventReceiver::DISPLAY_EVENT_VSYNC;
         event.header.id = 0;
@@ -95,13 +111,28 @@
 status_t EventThread::registerDisplayEventConnection(
         const sp<EventThread::Connection>& connection) {
     std::lock_guard<std::mutex> lock(mMutex);
-    mDisplayEventConnections.add(connection);
+
+    // this should never happen
+    auto it = std::find(mDisplayEventConnections.cbegin(),
+            mDisplayEventConnections.cend(), connection);
+    if (it != mDisplayEventConnections.cend()) {
+        ALOGW("DisplayEventConnection %p already exists", connection.get());
+        mCondition.notify_all();
+        return ALREADY_EXISTS;
+    }
+
+    mDisplayEventConnections.push_back(connection);
     mCondition.notify_all();
     return NO_ERROR;
 }
 
-void EventThread::removeDisplayEventConnectionLocked(const wp<EventThread::Connection>& connection) {
-    mDisplayEventConnections.remove(connection);
+void EventThread::removeDisplayEventConnectionLocked(
+        const wp<EventThread::Connection>& connection) {
+    auto it = std::find(mDisplayEventConnections.cbegin(),
+            mDisplayEventConnections.cend(), connection);
+    if (it != mDisplayEventConnections.cend()) {
+        mDisplayEventConnections.erase(it);
+    }
 }
 
 void EventThread::setVsyncRate(uint32_t count, const sp<EventThread::Connection>& connection) {
@@ -155,33 +186,28 @@
     mCondition.notify_all();
 }
 
-void EventThread::onHotplugReceived(int type, bool connected) {
-    ALOGE_IF(type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES,
-             "received hotplug event for an invalid display (id=%d)", type);
-
+void EventThread::onHotplugReceived(DisplayType displayType, bool connected) {
     std::lock_guard<std::mutex> lock(mMutex);
-    if (type < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
-        DisplayEventReceiver::Event event;
-        event.header.type = DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG;
-        event.header.id = type;
-        event.header.timestamp = systemTime();
-        event.hotplug.connected = connected;
-        mPendingEvents.add(event);
-        mCondition.notify_all();
-    }
+
+    DisplayEventReceiver::Event event;
+    event.header.type = DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG;
+    event.header.id = displayType == DisplayType::Primary ? 0 : 1;
+    event.header.timestamp = systemTime();
+    event.hotplug.connected = connected;
+
+    mPendingEvents.push(event);
+    mCondition.notify_all();
 }
 
 void EventThread::threadMain() NO_THREAD_SAFETY_ANALYSIS {
     std::unique_lock<std::mutex> lock(mMutex);
     while (mKeepRunning) {
         DisplayEventReceiver::Event event;
-        Vector<sp<EventThread::Connection> > signalConnections;
+        std::vector<sp<EventThread::Connection>> signalConnections;
         signalConnections = waitForEventLocked(&lock, &event);
 
         // dispatch events to listeners...
-        const size_t count = signalConnections.size();
-        for (size_t i = 0; i < count; i++) {
-            const sp<Connection>& conn(signalConnections[i]);
+        for (const sp<Connection>& conn : signalConnections) {
             // now see if we still need to report this event
             status_t err = conn->postEvent(event);
             if (err == -EAGAIN || err == -EWOULDBLOCK) {
@@ -196,7 +222,7 @@
                 // handle any other error on the pipe as fatal. the only
                 // reasonable thing to do is to clean-up this connection.
                 // The most common error we'll get here is -EPIPE.
-                removeDisplayEventConnectionLocked(signalConnections[i]);
+                removeDisplayEventConnectionLocked(conn);
             }
         }
     }
@@ -204,44 +230,44 @@
 
 // This will return when (1) a vsync event has been received, and (2) there was
 // at least one connection interested in receiving it when we started waiting.
-Vector<sp<EventThread::Connection> > EventThread::waitForEventLocked(
-        std::unique_lock<std::mutex>* lock, DisplayEventReceiver::Event* event) {
-    Vector<sp<EventThread::Connection> > signalConnections;
+std::vector<sp<EventThread::Connection>> EventThread::waitForEventLocked(
+        std::unique_lock<std::mutex>* lock, DisplayEventReceiver::Event* outEvent) {
+    std::vector<sp<EventThread::Connection>> signalConnections;
 
-    while (signalConnections.isEmpty() && mKeepRunning) {
+    while (signalConnections.empty() && mKeepRunning) {
         bool eventPending = false;
         bool waitForVSync = false;
 
         size_t vsyncCount = 0;
         nsecs_t timestamp = 0;
-        for (int32_t i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; i++) {
-            timestamp = mVSyncEvent[i].header.timestamp;
+        for (auto& event : mVSyncEvent) {
+            timestamp = event.header.timestamp;
             if (timestamp) {
                 // we have a vsync event to dispatch
                 if (mInterceptVSyncsCallback) {
                     mInterceptVSyncsCallback(timestamp);
                 }
-                *event = mVSyncEvent[i];
-                mVSyncEvent[i].header.timestamp = 0;
-                vsyncCount = mVSyncEvent[i].vsync.count;
+                *outEvent = event;
+                event.header.timestamp = 0;
+                vsyncCount = event.vsync.count;
                 break;
             }
         }
 
         if (!timestamp) {
             // no vsync event, see if there are some other event
-            eventPending = !mPendingEvents.isEmpty();
+            eventPending = !mPendingEvents.empty();
             if (eventPending) {
                 // we have some other event to dispatch
-                *event = mPendingEvents[0];
-                mPendingEvents.removeAt(0);
+                *outEvent = mPendingEvents.front();
+                mPendingEvents.pop();
             }
         }
 
         // find out connections waiting for events
-        size_t count = mDisplayEventConnections.size();
-        for (size_t i = 0; i < count;) {
-            sp<Connection> connection(mDisplayEventConnections[i].promote());
+        auto it = mDisplayEventConnections.begin();
+        while (it != mDisplayEventConnections.end()) {
+            sp<Connection> connection(it->promote());
             if (connection != nullptr) {
                 bool added = false;
                 if (connection->count >= 0) {
@@ -254,12 +280,12 @@
                         if (connection->count == 0) {
                             // fired this time around
                             connection->count = -1;
-                            signalConnections.add(connection);
+                            signalConnections.push_back(connection);
                             added = true;
                         } else if (connection->count == 1 ||
                                    (vsyncCount % connection->count) == 0) {
                             // continuous event, and time to report it
-                            signalConnections.add(connection);
+                            signalConnections.push_back(connection);
                             added = true;
                         }
                     }
@@ -269,14 +295,13 @@
                     // we don't have a vsync event to process
                     // (timestamp==0), but we have some pending
                     // messages.
-                    signalConnections.add(connection);
+                    signalConnections.push_back(connection);
                 }
-                ++i;
+                ++it;
             } else {
                 // we couldn't promote this reference, the connection has
                 // died, so clean-up!
-                mDisplayEventConnections.removeAt(i);
-                --count;
+                it = mDisplayEventConnections.erase(it);
             }
         }
 
@@ -319,7 +344,7 @@
                     // FIXME: how do we decide which display id the fake
                     // vsync came from ?
                     mVSyncEvent[0].header.type = DisplayEventReceiver::DISPLAY_EVENT_VSYNC;
-                    mVSyncEvent[0].header.id = DisplayDevice::DISPLAY_PRIMARY;
+                    mVSyncEvent[0].header.id = 0;
                     mVSyncEvent[0].header.timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
                     mVSyncEvent[0].vsync.count++;
                 }
@@ -364,13 +389,13 @@
     result.appendFormat("VSYNC state: %s\n", mDebugVsyncEnabled ? "enabled" : "disabled");
     result.appendFormat("  soft-vsync: %s\n", mUseSoftwareVSync ? "enabled" : "disabled");
     result.appendFormat("  numListeners=%zu,\n  events-delivered: %u\n",
-                        mDisplayEventConnections.size(),
-                        mVSyncEvent[DisplayDevice::DISPLAY_PRIMARY].vsync.count);
-    for (size_t i = 0; i < mDisplayEventConnections.size(); i++) {
-        sp<Connection> connection = mDisplayEventConnections.itemAt(i).promote();
+                        mDisplayEventConnections.size(), mVSyncEvent[0].vsync.count);
+    for (const wp<Connection>& weak : mDisplayEventConnections) {
+        sp<Connection> connection = weak.promote();
         result.appendFormat("    %p: count=%d\n", connection.get(),
                             connection != nullptr ? connection->count : 0);
     }
+    result.appendFormat("  other-events-pending: %zu\n", mPendingEvents.size());
 }
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/EventThread.h b/services/surfaceflinger/Scheduler/EventThread.h
similarity index 74%
rename from services/surfaceflinger/EventThread.h
rename to services/surfaceflinger/Scheduler/EventThread.h
index 9c13ed2..5e7ed13 100644
--- a/services/surfaceflinger/EventThread.h
+++ b/services/surfaceflinger/Scheduler/EventThread.h
@@ -16,11 +16,15 @@
 
 #pragma once
 
-#include <stdint.h>
 #include <sys/types.h>
+
+#include <array>
 #include <condition_variable>
+#include <cstdint>
 #include <mutex>
+#include <queue>
 #include <thread>
+#include <vector>
 
 #include <android-base/thread_annotations.h>
 
@@ -29,9 +33,6 @@
 #include <private/gui/BitTube.h>
 
 #include <utils/Errors.h>
-#include <utils/SortedVector.h>
-
-#include "DisplayDevice.h"
 
 // ---------------------------------------------------------------------------
 namespace android {
@@ -59,6 +60,9 @@
 
 class EventThread {
 public:
+    // TODO: Remove once stable display IDs are plumbed through SF/WM interface.
+    enum class DisplayType { Primary, External };
+
     virtual ~EventThread();
 
     virtual sp<BnDisplayEventConnection> createEventConnection() const = 0;
@@ -70,7 +74,7 @@
     virtual void onScreenAcquired() = 0;
 
     // called when receiving a hotplug event
-    virtual void onHotplugReceived(int type, bool connected) = 0;
+    virtual void onHotplugReceived(DisplayType displayType, bool connected) = 0;
 
     virtual void dump(String8& result) const = 0;
 
@@ -105,12 +109,15 @@
     using ResyncWithRateLimitCallback = std::function<void()>;
     using InterceptVSyncsCallback = std::function<void(nsecs_t)>;
 
+    // TODO(b/113612090): Once the Scheduler is complete this constructor will become obsolete.
     EventThread(VSyncSource* src, ResyncWithRateLimitCallback resyncWithRateLimitCallback,
                 InterceptVSyncsCallback interceptVSyncsCallback, const char* threadName);
+    EventThread(std::unique_ptr<VSyncSource> src,
+                ResyncWithRateLimitCallback resyncWithRateLimitCallback,
+                InterceptVSyncsCallback interceptVSyncsCallback, const char* threadName);
     ~EventThread();
 
     sp<BnDisplayEventConnection> createEventConnection() const override;
-    status_t registerDisplayEventConnection(const sp<Connection>& connection);
 
     void setVsyncRate(uint32_t count, const sp<Connection>& connection);
     void requestNextVsync(const sp<Connection>& connection);
@@ -122,7 +129,7 @@
     void onScreenAcquired() override;
 
     // called when receiving a hotplug event
-    void onHotplugReceived(int type, bool connected) override;
+    void onHotplugReceived(DisplayType displayType, bool connected) override;
 
     void dump(String8& result) const override;
 
@@ -131,9 +138,16 @@
 private:
     friend EventThreadTest;
 
+    // TODO(b/113612090): Once the Scheduler is complete this constructor will become obsolete.
+    EventThread(VSyncSource* src, std::unique_ptr<VSyncSource> uniqueSrc,
+                ResyncWithRateLimitCallback resyncWithRateLimitCallback,
+                InterceptVSyncsCallback interceptVSyncsCallback, const char* threadName);
+
+    status_t registerDisplayEventConnection(const sp<Connection>& connection);
+
     void threadMain();
-    Vector<sp<EventThread::Connection>> waitForEventLocked(std::unique_lock<std::mutex>* lock,
-                                                           DisplayEventReceiver::Event* event)
+    std::vector<sp<EventThread::Connection>> waitForEventLocked(std::unique_lock<std::mutex>* lock,
+                                                                DisplayEventReceiver::Event* event)
             REQUIRES(mMutex);
 
     void removeDisplayEventConnectionLocked(const wp<Connection>& connection) REQUIRES(mMutex);
@@ -143,8 +157,10 @@
     // Implements VSyncSource::Callback
     void onVSyncEvent(nsecs_t timestamp) override;
 
+    // TODO(b/113612090): Once the Scheduler is complete this pointer will become obsolete.
+    VSyncSource* mVSyncSource GUARDED_BY(mMutex) = nullptr;
+    std::unique_ptr<VSyncSource> mVSyncSourceUnique GUARDED_BY(mMutex) = nullptr;
     // constants
-    VSyncSource* const mVSyncSource GUARDED_BY(mMutex) = nullptr;
     const ResyncWithRateLimitCallback mResyncWithRateLimitCallback;
     const InterceptVSyncsCallback mInterceptVSyncsCallback;
 
@@ -153,10 +169,9 @@
     mutable std::condition_variable mCondition;
 
     // protected by mLock
-    SortedVector<wp<Connection>> mDisplayEventConnections GUARDED_BY(mMutex);
-    Vector<DisplayEventReceiver::Event> mPendingEvents GUARDED_BY(mMutex);
-    DisplayEventReceiver::Event mVSyncEvent[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES] GUARDED_BY(
-            mMutex);
+    std::vector<wp<Connection>> mDisplayEventConnections GUARDED_BY(mMutex);
+    std::queue<DisplayEventReceiver::Event> mPendingEvents GUARDED_BY(mMutex);
+    std::array<DisplayEventReceiver::Event, 2> mVSyncEvent GUARDED_BY(mMutex);
     bool mUseSoftwareVSync GUARDED_BY(mMutex) = false;
     bool mVsyncEnabled GUARDED_BY(mMutex) = false;
     bool mKeepRunning GUARDED_BY(mMutex) = true;
diff --git a/services/surfaceflinger/Scheduler/InjectVSyncSource.h b/services/surfaceflinger/Scheduler/InjectVSyncSource.h
new file mode 100644
index 0000000..a0e1447
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/InjectVSyncSource.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <mutex>
+
+#include "EventThread.h"
+
+namespace android {
+
+/**
+ * VSync signals used during SurfaceFlinger trace playback (traces we captured
+ * with SurfaceInterceptor).
+ */
+class InjectVSyncSource final : public VSyncSource {
+public:
+    ~InjectVSyncSource() override = default;
+
+    void setCallback(VSyncSource::Callback* callback) override {
+        std::lock_guard<std::mutex> lock(mCallbackMutex);
+        mCallback = callback;
+    }
+
+    void onInjectSyncEvent(nsecs_t when) {
+        std::lock_guard<std::mutex> lock(mCallbackMutex);
+        if (mCallback) {
+            mCallback->onVSyncEvent(when);
+        }
+    }
+
+    void setVSyncEnabled(bool) override {}
+    void setPhaseOffset(nsecs_t) override {}
+
+private:
+    std::mutex mCallbackMutex;
+    VSyncSource::Callback* mCallback GUARDED_BY(mCallbackMutex) = nullptr;
+};
+
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/MessageQueue.cpp b/services/surfaceflinger/Scheduler/MessageQueue.cpp
similarity index 92%
rename from services/surfaceflinger/MessageQueue.cpp
rename to services/surfaceflinger/Scheduler/MessageQueue.cpp
index 056d381..58355ae 100644
--- a/services/surfaceflinger/MessageQueue.cpp
+++ b/services/surfaceflinger/Scheduler/MessageQueue.cpp
@@ -101,6 +101,17 @@
                    this);
 }
 
+void MessageQueue::setEventConnection(const sp<BnDisplayEventConnection>& connection) {
+    if (mEventTube.getFd() >= 0) {
+        mLooper->removeFd(mEventTube.getFd());
+    }
+
+    mEvents = connection;
+    mEvents->stealReceiveChannel(&mEventTube);
+    mLooper->addFd(mEventTube.getFd(), 0, Looper::EVENT_INPUT, MessageQueue::cb_eventReceiver,
+                   this);
+}
+
 void MessageQueue::waitMessage() {
     do {
         IPCThreadState::self()->flushCommands();
diff --git a/services/surfaceflinger/MessageQueue.h b/services/surfaceflinger/Scheduler/MessageQueue.h
similarity index 93%
rename from services/surfaceflinger/MessageQueue.h
rename to services/surfaceflinger/Scheduler/MessageQueue.h
index 90d1c72..2ec697e 100644
--- a/services/surfaceflinger/MessageQueue.h
+++ b/services/surfaceflinger/Scheduler/MessageQueue.h
@@ -85,7 +85,9 @@
     virtual ~MessageQueue();
 
     virtual void init(const sp<SurfaceFlinger>& flinger) = 0;
+    // TODO(akrulec): Remove this function once everything is migrated to Scheduler.
     virtual void setEventThread(EventThread* events) = 0;
+    virtual void setEventConnection(const sp<BnDisplayEventConnection>& connection) = 0;
     virtual void waitMessage() = 0;
     virtual status_t postMessage(const sp<MessageBase>& message, nsecs_t reltime = 0) = 0;
     virtual void invalidate() = 0;
@@ -125,6 +127,7 @@
     ~MessageQueue() override = default;
     void init(const sp<SurfaceFlinger>& flinger) override;
     void setEventThread(android::EventThread* events) override;
+    void setEventConnection(const sp<BnDisplayEventConnection>& connection) override;
 
     void waitMessage() override;
     status_t postMessage(const sp<MessageBase>& message, nsecs_t reltime = 0) override;
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
new file mode 100644
index 0000000..54e19c7
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Scheduler.h"
+
+#include <cinttypes>
+#include <cstdint>
+#include <memory>
+
+#include <gui/ISurfaceComposer.h>
+
+#include "DispSync.h"
+#include "DispSyncSource.h"
+#include "EventThread.h"
+#include "InjectVSyncSource.h"
+
+namespace android {
+
+#define RETURN_VALUE_IF_INVALID(value) \
+    if (handle == nullptr || mConnections.count(handle->id) == 0) return value
+#define RETURN_IF_INVALID() \
+    if (handle == nullptr || mConnections.count(handle->id) == 0) return
+
+std::atomic<int64_t> Scheduler::sNextId = 0;
+
+Scheduler::~Scheduler() = default;
+
+sp<Scheduler::ConnectionHandle> Scheduler::createConnection(
+        const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
+        impl::EventThread::ResyncWithRateLimitCallback resyncCallback,
+        impl::EventThread::InterceptVSyncsCallback interceptCallback) {
+    const int64_t id = sNextId++;
+    ALOGV("Creating a connection handle with ID: %" PRId64 "\n", id);
+
+    std::unique_ptr<EventThread> eventThread =
+            makeEventThread(connectionName, dispSync, phaseOffsetNs, resyncCallback,
+                            interceptCallback);
+    auto connection = std::make_unique<Connection>(new ConnectionHandle(id),
+                                                   eventThread->createEventConnection(),
+                                                   std::move(eventThread));
+    mConnections.insert(std::make_pair(id, std::move(connection)));
+    return mConnections[id]->handle;
+}
+
+std::unique_ptr<EventThread> Scheduler::makeEventThread(
+        const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
+        impl::EventThread::ResyncWithRateLimitCallback resyncCallback,
+        impl::EventThread::InterceptVSyncsCallback interceptCallback) {
+    const std::string sourceName = connectionName + "Source";
+    std::unique_ptr<VSyncSource> eventThreadSource =
+            std::make_unique<DispSyncSource>(dispSync, phaseOffsetNs, true, sourceName.c_str());
+    const std::string threadName = connectionName + "Thread";
+    return std::make_unique<impl::EventThread>(std::move(eventThreadSource), resyncCallback,
+                                               interceptCallback, threadName.c_str());
+}
+
+sp<IDisplayEventConnection> Scheduler::createDisplayEventConnection(
+        const sp<Scheduler::ConnectionHandle>& handle) {
+    RETURN_VALUE_IF_INVALID(nullptr);
+    return mConnections[handle->id]->thread->createEventConnection();
+}
+
+EventThread* Scheduler::getEventThread(const sp<Scheduler::ConnectionHandle>& handle) {
+    RETURN_VALUE_IF_INVALID(nullptr);
+    return mConnections[handle->id]->thread.get();
+}
+
+sp<BnDisplayEventConnection> Scheduler::getEventConnection(const sp<ConnectionHandle>& handle) {
+    RETURN_VALUE_IF_INVALID(nullptr);
+    return mConnections[handle->id]->eventConnection;
+}
+
+void Scheduler::hotplugReceived(const sp<Scheduler::ConnectionHandle>& handle,
+                                EventThread::DisplayType displayType, bool connected) {
+    RETURN_IF_INVALID();
+    mConnections[handle->id]->thread->onHotplugReceived(displayType, connected);
+}
+
+void Scheduler::onScreenAcquired(const sp<Scheduler::ConnectionHandle>& handle) {
+    RETURN_IF_INVALID();
+    mConnections[handle->id]->thread->onScreenAcquired();
+}
+
+void Scheduler::onScreenReleased(const sp<Scheduler::ConnectionHandle>& handle) {
+    RETURN_IF_INVALID();
+    mConnections[handle->id]->thread->onScreenReleased();
+}
+
+void Scheduler::dump(const sp<Scheduler::ConnectionHandle>& handle, String8& result) const {
+    RETURN_IF_INVALID();
+    mConnections.at(handle->id)->thread->dump(result);
+}
+
+void Scheduler::setPhaseOffset(const sp<Scheduler::ConnectionHandle>& handle, nsecs_t phaseOffset) {
+    RETURN_IF_INVALID();
+    mConnections[handle->id]->thread->setPhaseOffset(phaseOffset);
+}
+} // namespace android
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
new file mode 100644
index 0000000..fcb46e6
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <memory>
+
+#include <gui/ISurfaceComposer.h>
+
+#include "DispSync.h"
+#include "EventThread.h"
+#include "InjectVSyncSource.h"
+
+namespace android {
+
+class Scheduler {
+public:
+    /* The scheduler handle is a BBinder object passed to the client from which we can extract
+     * an ID for subsequent operations.
+     */
+    class ConnectionHandle : public BBinder {
+    public:
+        ConnectionHandle(int64_t id) : id(id) {}
+        ~ConnectionHandle() = default;
+        const int64_t id;
+    };
+
+    class Connection {
+    public:
+        Connection(sp<ConnectionHandle> handle, sp<BnDisplayEventConnection> eventConnection,
+                   std::unique_ptr<EventThread> eventThread)
+              : handle(handle), eventConnection(eventConnection), thread(std::move(eventThread)) {}
+        ~Connection() = default;
+
+        sp<ConnectionHandle> handle;
+        sp<BnDisplayEventConnection> eventConnection;
+        const std::unique_ptr<EventThread> thread;
+    };
+
+    Scheduler() = default;
+    virtual ~Scheduler();
+
+    /** Creates an EventThread connection. */
+    sp<ConnectionHandle> createConnection(
+            const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
+            impl::EventThread::ResyncWithRateLimitCallback resyncCallback,
+            impl::EventThread::InterceptVSyncsCallback interceptCallback);
+    sp<IDisplayEventConnection> createDisplayEventConnection(const sp<ConnectionHandle>& handle);
+
+    // Getter methods.
+    EventThread* getEventThread(const sp<ConnectionHandle>& handle);
+    sp<BnDisplayEventConnection> getEventConnection(const sp<ConnectionHandle>& handle);
+
+    // Should be called when receiving a hotplug event.
+    void hotplugReceived(const sp<ConnectionHandle>& handle, EventThread::DisplayType displayType,
+                         bool connected);
+    // Should be called after the screen is turned on.
+    void onScreenAcquired(const sp<ConnectionHandle>& handle);
+    // Should be called before the screen is turned off.
+    void onScreenReleased(const sp<ConnectionHandle>& handle);
+    // Should be called when dumpsys command is received.
+    void dump(const sp<ConnectionHandle>& handle, String8& result) const;
+    // Offers ability to modify phase offset in the event thread.
+    void setPhaseOffset(const sp<ConnectionHandle>& handle, nsecs_t phaseOffset);
+
+protected:
+    virtual std::unique_ptr<EventThread> makeEventThread(
+            const std::string& connectionName, DispSync* dispSync, int64_t phaseOffsetNs,
+            impl::EventThread::ResyncWithRateLimitCallback resyncCallback,
+            impl::EventThread::InterceptVSyncsCallback interceptCallback);
+
+private:
+    static std::atomic<int64_t> sNextId;
+    std::unordered_map<int64_t, std::unique_ptr<Connection>> mConnections;
+};
+
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/VSyncModulator.h b/services/surfaceflinger/Scheduler/VSyncModulator.h
similarity index 79%
rename from services/surfaceflinger/VSyncModulator.h
rename to services/surfaceflinger/Scheduler/VSyncModulator.h
index e071a59..ea8ca4c 100644
--- a/services/surfaceflinger/VSyncModulator.h
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.h
@@ -29,22 +29,17 @@
  */
 class VSyncModulator {
 private:
-
     // Number of frames we'll keep the early phase offsets once they are activated. This acts as a
     // low-pass filter in case the client isn't quick enough in sending new transactions.
     const int MIN_EARLY_FRAME_COUNT = 2;
 
 public:
-
     struct Offsets {
         nsecs_t sf;
         nsecs_t app;
     };
 
-    enum TransactionStart {
-        EARLY,
-        NORMAL
-    };
+    enum TransactionStart { EARLY, NORMAL };
 
     // Sets the phase offsets
     //
@@ -63,21 +58,24 @@
         mOffsets = late;
     }
 
-    Offsets getEarlyOffsets() const {
-        return mEarlyOffsets;
-    }
+    Offsets getEarlyOffsets() const { return mEarlyOffsets; }
 
-    Offsets getEarlyGlOffsets() const {
-        return mEarlyGlOffsets;
-    }
+    Offsets getEarlyGlOffsets() const { return mEarlyGlOffsets; }
 
     void setEventThreads(EventThread* sfEventThread, EventThread* appEventThread) {
         mSfEventThread = sfEventThread;
         mAppEventThread = appEventThread;
     }
 
-    void setTransactionStart(TransactionStart transactionStart) {
+    void setSchedulerAndHandles(Scheduler* scheduler,
+                                Scheduler::ConnectionHandle* appConnectionHandle,
+                                Scheduler::ConnectionHandle* sfConnectionHandle) {
+        mScheduler = scheduler;
+        mAppConnectionHandle = appConnectionHandle;
+        mSfConnectionHandle = sfConnectionHandle;
+    }
 
+    void setTransactionStart(TransactionStart transactionStart) {
         if (transactionStart == TransactionStart::EARLY) {
             mRemainingEarlyFrameCount = MIN_EARLY_FRAME_COUNT;
         }
@@ -112,18 +110,25 @@
     }
 
 private:
-
     void updateOffsets() {
         const Offsets desired = getOffsets();
         const Offsets current = mOffsets;
 
         bool changed = false;
         if (desired.sf != current.sf) {
-            mSfEventThread->setPhaseOffset(desired.sf);
+            if (mSfConnectionHandle != nullptr) {
+                mScheduler->setPhaseOffset(mSfConnectionHandle, desired.sf);
+            } else {
+                mSfEventThread->setPhaseOffset(desired.sf);
+            }
             changed = true;
         }
         if (desired.app != current.app) {
-            mAppEventThread->setPhaseOffset(desired.app);
+            if (mSfConnectionHandle != nullptr) {
+                mScheduler->setPhaseOffset(mAppConnectionHandle, desired.app);
+            } else {
+                mAppEventThread->setPhaseOffset(desired.app);
+            }
             changed = true;
         }
 
@@ -149,6 +154,10 @@
     EventThread* mSfEventThread = nullptr;
     EventThread* mAppEventThread = nullptr;
 
+    Scheduler* mScheduler = nullptr;
+    Scheduler::ConnectionHandle* mAppConnectionHandle = nullptr;
+    Scheduler::ConnectionHandle* mSfConnectionHandle = nullptr;
+
     std::atomic<Offsets> mOffsets;
 
     std::atomic<TransactionStart> mTransactionStart = TransactionStart::NORMAL;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 11e7ff0..2199ce1 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -47,7 +47,7 @@
 #include <gui/IDisplayEventConnection.h>
 #include <gui/LayerDebugInfo.h>
 #include <gui/Surface.h>
-
+#include <renderengine/RenderEngine.h>
 #include <ui/GraphicBufferAllocator.h>
 #include <ui/PixelFormat.h>
 #include <ui/UiConfig.h>
@@ -63,33 +63,40 @@
 #include <private/gui/SyncFeatures.h>
 
 #include "BufferLayer.h"
+#include "BufferQueueLayer.h"
+#include "BufferStateLayer.h"
 #include "Client.h"
 #include "ColorLayer.h"
 #include "Colorizer.h"
 #include "ContainerLayer.h"
 #include "DdmConnection.h"
-#include "DispSync.h"
 #include "DisplayDevice.h"
-#include "EventControlThread.h"
-#include "EventThread.h"
 #include "Layer.h"
 #include "LayerVector.h"
 #include "MonitoredProducer.h"
+#include "NativeWindowSurface.h"
 #include "SurfaceFlinger.h"
-#include "clz.h"
 
 #include "DisplayHardware/ComposerHal.h"
+#include "DisplayHardware/DisplayIdentification.h"
 #include "DisplayHardware/FramebufferSurface.h"
 #include "DisplayHardware/HWComposer.h"
 #include "DisplayHardware/VirtualDisplaySurface.h"
-
 #include "Effects/Daltonizer.h"
+#include "Scheduler/DispSync.h"
+#include "Scheduler/DispSyncSource.h"
+#include "Scheduler/EventControlThread.h"
+#include "Scheduler/EventThread.h"
+#include "Scheduler/InjectVSyncSource.h"
+#include "Scheduler/Scheduler.h"
 
-#include "RenderEngine/RenderEngine.h"
 #include <cutils/compiler.h>
 
+#include "android-base/stringprintf.h"
+
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
+#include <android/hardware/configstore/1.2/ISurfaceFlingerConfigs.h>
 #include <android/hardware/configstore/1.1/types.h>
 #include <configstore/Utils.h>
 
@@ -97,12 +104,6 @@
 
 #define DISPLAY_COUNT       1
 
-/*
- * DEBUG_SCREENSHOTS: set to true to check that screenshots are not all
- * black pixels.
- */
-#define DEBUG_SCREENSHOTS   false
-
 namespace android {
 
 using namespace android::hardware::configstore;
@@ -113,6 +114,48 @@
 using ui::RenderIntent;
 
 namespace {
+
+#pragma clang diagnostic push
+#pragma clang diagnostic error "-Wswitch-enum"
+
+bool isWideColorMode(const ColorMode colorMode) {
+    switch (colorMode) {
+        case ColorMode::DISPLAY_P3:
+        case ColorMode::ADOBE_RGB:
+        case ColorMode::DCI_P3:
+        case ColorMode::BT2020:
+        case ColorMode::BT2100_PQ:
+        case ColorMode::BT2100_HLG:
+            return true;
+        case ColorMode::NATIVE:
+        case ColorMode::STANDARD_BT601_625:
+        case ColorMode::STANDARD_BT601_625_UNADJUSTED:
+        case ColorMode::STANDARD_BT601_525:
+        case ColorMode::STANDARD_BT601_525_UNADJUSTED:
+        case ColorMode::STANDARD_BT709:
+        case ColorMode::SRGB:
+            return false;
+    }
+    return false;
+}
+
+ui::Transform::orientation_flags fromSurfaceComposerRotation(ISurfaceComposer::Rotation rotation) {
+    switch (rotation) {
+        case ISurfaceComposer::eRotateNone:
+            return ui::Transform::ROT_0;
+        case ISurfaceComposer::eRotate90:
+            return ui::Transform::ROT_90;
+        case ISurfaceComposer::eRotate180:
+            return ui::Transform::ROT_180;
+        case ISurfaceComposer::eRotate270:
+            return ui::Transform::ROT_270;
+    }
+    ALOGE("Invalid rotation passed to captureScreen(): %d\n", rotation);
+    return ui::Transform::ROT_0;
+}
+
+#pragma clang diagnostic pop
+
 class ConditionalLock {
 public:
     ConditionalLock(Mutex& mutex, bool lock) : mMutex(mutex), mLocked(lock) {
@@ -125,6 +168,7 @@
     Mutex& mMutex;
     bool mLocked;
 };
+
 }  // namespace anonymous
 
 // ---------------------------------------------------------------------------
@@ -145,7 +189,11 @@
 int64_t SurfaceFlinger::maxFrameBufferAcquiredBuffers;
 // TODO(courtneygo): Rename hasWideColorDisplay to clarify its actual meaning.
 bool SurfaceFlinger::hasWideColorDisplay;
-
+int SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientationDefault;
+bool SurfaceFlinger::useColorManagement;
+bool SurfaceFlinger::useContextPriority;
+Dataspace SurfaceFlinger::compositionDataSpace = Dataspace::V0_SRGB;
+ui::PixelFormat SurfaceFlinger::compositionPixelFormat = ui::PixelFormat::RGBA_8888;
 
 std::string getHwcServiceName() {
     char value[PROPERTY_VALUE_MAX] = {};
@@ -175,32 +223,6 @@
     }
 }
 
-NativeWindowSurface::~NativeWindowSurface() = default;
-
-namespace impl {
-
-class NativeWindowSurface final : public android::NativeWindowSurface {
-public:
-    static std::unique_ptr<android::NativeWindowSurface> create(
-            const sp<IGraphicBufferProducer>& producer) {
-        return std::make_unique<NativeWindowSurface>(producer);
-    }
-
-    explicit NativeWindowSurface(const sp<IGraphicBufferProducer>& producer)
-          : surface(new Surface(producer, false)) {}
-
-    ~NativeWindowSurface() override = default;
-
-private:
-    sp<ANativeWindow> getNativeWindow() const override { return surface; }
-
-    void preallocateBuffers() override { surface->allocateBuffers(); }
-
-    sp<Surface> surface;
-};
-
-} // namespace impl
-
 SurfaceFlingerBE::SurfaceFlingerBE()
       : mHwcServiceName(getHwcServiceName()),
         mRenderEngine(nullptr),
@@ -212,14 +234,12 @@
 
 SurfaceFlinger::SurfaceFlinger(SurfaceFlinger::SkipInitializationTag)
       : BnSurfaceComposer(),
-        mTransactionFlags(0),
         mTransactionPending(false),
         mAnimTransactionPending(false),
         mLayersRemoved(false),
         mLayersAdded(false),
-        mRepaintEverything(0),
         mBootTime(systemTime()),
-        mBuiltinDisplays(),
+        mDisplayTokens(),
         mVisibleRegionsDirty(false),
         mGeometryInvalid(false),
         mAnimCompositionPending(false),
@@ -228,20 +248,18 @@
         mDebugDDMS(0),
         mDebugDisableHWC(0),
         mDebugDisableTransformHint(0),
-        mDebugInSwapBuffers(0),
-        mLastSwapBufferTime(0),
         mDebugInTransaction(0),
         mLastTransactionTime(0),
         mForceFullDamage(false),
-        mPrimaryDispSync("PrimaryDispSync"),
         mPrimaryHWVsyncEnabled(false),
         mHWVsyncAvailable(false),
+        mRefreshStartTime(0),
         mHasPoweredOff(false),
         mNumLayers(0),
         mVrFlingerRequestsDisplay(false),
         mMainThreadId(std::this_thread::get_id()),
         mCreateBufferQueue(&BufferQueue::createBufferQueue),
-        mCreateNativeWindowSurface(&impl::NativeWindowSurface::create) {}
+        mCreateNativeWindowSurface(&surfaceflinger::impl::createNativeWindowSurface) {}
 
 SurfaceFlinger::SurfaceFlinger() : SurfaceFlinger(SkipInitialization) {
     ALOGI("SurfaceFlinger is starting");
@@ -273,28 +291,50 @@
 
     hasWideColorDisplay =
             getBool<ISurfaceFlingerConfigs, &ISurfaceFlingerConfigs::hasWideColorDisplay>(false);
+    useColorManagement =
+            getBool<V1_2::ISurfaceFlingerConfigs,
+                    &V1_2::ISurfaceFlingerConfigs::useColorManagement>(false);
+
+    auto surfaceFlingerConfigsServiceV1_2 = V1_2::ISurfaceFlingerConfigs::getService();
+    if (surfaceFlingerConfigsServiceV1_2) {
+        surfaceFlingerConfigsServiceV1_2->getCompositionPreference(
+            [&](Dataspace tmpDataSpace, ui::PixelFormat tmpPixelFormat) {
+                compositionDataSpace = tmpDataSpace;
+                compositionPixelFormat = tmpPixelFormat;
+            });
+    }
+
+    useContextPriority = getBool<ISurfaceFlingerConfigs,
+                                 &ISurfaceFlingerConfigs::useContextPriority>(true);
 
     V1_1::DisplayOrientation primaryDisplayOrientation =
-        getDisplayOrientation< V1_1::ISurfaceFlingerConfigs, &V1_1::ISurfaceFlingerConfigs::primaryDisplayOrientation>(
+        getDisplayOrientation<V1_1::ISurfaceFlingerConfigs,
+                              &V1_1::ISurfaceFlingerConfigs::primaryDisplayOrientation>(
             V1_1::DisplayOrientation::ORIENTATION_0);
 
     switch (primaryDisplayOrientation) {
         case V1_1::DisplayOrientation::ORIENTATION_90:
-            mPrimaryDisplayOrientation = DisplayState::eOrientation90;
+            SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientation90;
             break;
         case V1_1::DisplayOrientation::ORIENTATION_180:
-            mPrimaryDisplayOrientation = DisplayState::eOrientation180;
+            SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientation180;
             break;
         case V1_1::DisplayOrientation::ORIENTATION_270:
-            mPrimaryDisplayOrientation = DisplayState::eOrientation270;
+            SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientation270;
             break;
         default:
-            mPrimaryDisplayOrientation = DisplayState::eOrientationDefault;
+            SurfaceFlinger::primaryDisplayOrientation = DisplayState::eOrientationDefault;
             break;
     }
-    ALOGV("Primary Display Orientation is set to %2d.", mPrimaryDisplayOrientation);
+    ALOGV("Primary Display Orientation is set to %2d.", SurfaceFlinger::primaryDisplayOrientation);
 
-    mPrimaryDispSync.init(SurfaceFlinger::hasSyncFramework, SurfaceFlinger::dispSyncPresentTimeOffset);
+    // Note: We create a local temporary with the real DispSync implementation
+    // type temporarily so we can initialize it with the configured values,
+    // before storing it for more generic use using the interface type.
+    auto primaryDispSync = std::make_unique<impl::DispSync>("PrimaryDispSync");
+    primaryDispSync->init(SurfaceFlinger::hasSyncFramework,
+                          SurfaceFlinger::dispSyncPresentTimeOffset);
+    mPrimaryDispSync = std::move(primaryDispSync);
 
     // debugging stuff...
     char value[PROPERTY_VALUE_MAX];
@@ -322,7 +362,7 @@
 
     property_get("debug.sf.enable_hwc_vds", value, "0");
     mUseHwcVirtualDisplays = atoi(value);
-    ALOGI_IF(!mUseHwcVirtualDisplays, "Enabling HWC virtual displays");
+    ALOGI_IF(mUseHwcVirtualDisplays, "Enabling HWC virtual displays");
 
     property_get("ro.sf.disable_triple_buffer", value, "1");
     mLayerTripleBufferingDisabled = atoi(value);
@@ -344,6 +384,9 @@
     property_get("debug.sf.early_gl_app_phase_offset_ns", value, "-1");
     const int earlyGlAppOffsetNs = atoi(value);
 
+    property_get("debug.sf.use_scheduler", value, "0");
+    mUseScheduler = atoi(value);
+
     const VSyncModulator::Offsets earlyOffsets =
             {earlySfOffsetNs != -1 ? earlySfOffsetNs : sfVsyncPhaseOffsetNs,
             earlyAppOffsetNs != -1 ? earlyAppOffsetNs : vsyncPhaseOffsetNs};
@@ -433,28 +476,30 @@
     sp<BBinder> token = new DisplayToken(this);
 
     Mutex::Autolock _l(mStateLock);
-    DisplayDeviceState info(DisplayDevice::DISPLAY_VIRTUAL, secure);
+    DisplayDeviceState info;
+    info.type = DisplayDevice::DISPLAY_VIRTUAL;
     info.displayName = displayName;
+    info.isSecure = secure;
     mCurrentState.displays.add(token, info);
     mInterceptor->saveDisplayCreation(info);
     return token;
 }
 
-void SurfaceFlinger::destroyDisplay(const sp<IBinder>& display) {
+void SurfaceFlinger::destroyDisplay(const sp<IBinder>& displayToken) {
     Mutex::Autolock _l(mStateLock);
 
-    ssize_t idx = mCurrentState.displays.indexOfKey(display);
+    ssize_t idx = mCurrentState.displays.indexOfKey(displayToken);
     if (idx < 0) {
-        ALOGW("destroyDisplay: invalid display token");
+        ALOGE("destroyDisplay: Invalid display token %p", displayToken.get());
         return;
     }
 
     const DisplayDeviceState& info(mCurrentState.displays.valueAt(idx));
-    if (!info.isVirtualDisplay()) {
+    if (!info.isVirtual()) {
         ALOGE("destroyDisplay called for non-virtual display");
         return;
     }
-    mInterceptor->saveDisplayDeletion(info.displayId);
+    mInterceptor->saveDisplayDeletion(info.sequenceId);
     mCurrentState.displays.removeItemsAt(idx);
     setTransactionFlags(eDisplayTransactionNeeded);
 }
@@ -464,7 +509,7 @@
         ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id);
         return nullptr;
     }
-    return mBuiltinDisplays[id];
+    return mDisplayTokens[id];
 }
 
 void SurfaceFlinger::bootFinished()
@@ -496,11 +541,10 @@
     LOG_EVENT_LONG(LOGTAG_SF_STOP_BOOTANIM,
                    ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));
 
-    sp<LambdaMessage> readProperties = new LambdaMessage([&]() {
+    postMessageAsync(new LambdaMessage([this] {
         readPersistentProperties();
         mBootStage = BootStage::FINISHED;
-    });
-    postMessageAsync(readProperties);
+    }));
 }
 
 uint32_t SurfaceFlinger::getNewTexture() {
@@ -525,151 +569,9 @@
 }
 
 void SurfaceFlinger::deleteTextureAsync(uint32_t texture) {
-    class MessageDestroyGLTexture : public MessageBase {
-        RE::RenderEngine& engine;
-        uint32_t texture;
-    public:
-        MessageDestroyGLTexture(RE::RenderEngine& engine, uint32_t texture)
-              : engine(engine), texture(texture) {}
-        virtual bool handler() {
-            engine.deleteTextures(1, &texture);
-            return true;
-        }
-    };
-    postMessageAsync(new MessageDestroyGLTexture(getRenderEngine(), texture));
+    postMessageAsync(new LambdaMessage([=] { getRenderEngine().deleteTextures(1, &texture); }));
 }
 
-class DispSyncSource final : public VSyncSource, private DispSync::Callback {
-public:
-    DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync,
-        const char* name) :
-            mName(name),
-            mValue(0),
-            mTraceVsync(traceVsync),
-            mVsyncOnLabel(String8::format("VsyncOn-%s", name)),
-            mVsyncEventLabel(String8::format("VSYNC-%s", name)),
-            mDispSync(dispSync),
-            mCallbackMutex(),
-            mVsyncMutex(),
-            mPhaseOffset(phaseOffset),
-            mEnabled(false) {}
-
-    ~DispSyncSource() override = default;
-
-    void setVSyncEnabled(bool enable) override {
-        Mutex::Autolock lock(mVsyncMutex);
-        if (enable) {
-            status_t err = mDispSync->addEventListener(mName, mPhaseOffset,
-                    static_cast<DispSync::Callback*>(this));
-            if (err != NO_ERROR) {
-                ALOGE("error registering vsync callback: %s (%d)",
-                        strerror(-err), err);
-            }
-            //ATRACE_INT(mVsyncOnLabel.string(), 1);
-        } else {
-            status_t err = mDispSync->removeEventListener(
-                    static_cast<DispSync::Callback*>(this));
-            if (err != NO_ERROR) {
-                ALOGE("error unregistering vsync callback: %s (%d)",
-                        strerror(-err), err);
-            }
-            //ATRACE_INT(mVsyncOnLabel.string(), 0);
-        }
-        mEnabled = enable;
-    }
-
-    void setCallback(VSyncSource::Callback* callback) override{
-        Mutex::Autolock lock(mCallbackMutex);
-        mCallback = callback;
-    }
-
-    void setPhaseOffset(nsecs_t phaseOffset) override {
-        Mutex::Autolock lock(mVsyncMutex);
-
-        // Normalize phaseOffset to [0, period)
-        auto period = mDispSync->getPeriod();
-        phaseOffset %= period;
-        if (phaseOffset < 0) {
-            // If we're here, then phaseOffset is in (-period, 0). After this
-            // operation, it will be in (0, period)
-            phaseOffset += period;
-        }
-        mPhaseOffset = phaseOffset;
-
-        // If we're not enabled, we don't need to mess with the listeners
-        if (!mEnabled) {
-            return;
-        }
-
-        status_t err = mDispSync->changePhaseOffset(static_cast<DispSync::Callback*>(this),
-                mPhaseOffset);
-        if (err != NO_ERROR) {
-            ALOGE("error changing vsync offset: %s (%d)",
-                    strerror(-err), err);
-        }
-    }
-
-private:
-    virtual void onDispSyncEvent(nsecs_t when) {
-        VSyncSource::Callback* callback;
-        {
-            Mutex::Autolock lock(mCallbackMutex);
-            callback = mCallback;
-
-            if (mTraceVsync) {
-                mValue = (mValue + 1) % 2;
-                ATRACE_INT(mVsyncEventLabel.string(), mValue);
-            }
-        }
-
-        if (callback != nullptr) {
-            callback->onVSyncEvent(when);
-        }
-    }
-
-    const char* const mName;
-
-    int mValue;
-
-    const bool mTraceVsync;
-    const String8 mVsyncOnLabel;
-    const String8 mVsyncEventLabel;
-
-    DispSync* mDispSync;
-
-    Mutex mCallbackMutex; // Protects the following
-    VSyncSource::Callback* mCallback = nullptr;
-
-    Mutex mVsyncMutex; // Protects the following
-    nsecs_t mPhaseOffset;
-    bool mEnabled;
-};
-
-class InjectVSyncSource final : public VSyncSource {
-public:
-    InjectVSyncSource() = default;
-    ~InjectVSyncSource() override = default;
-
-    void setCallback(VSyncSource::Callback* callback) override {
-        std::lock_guard<std::mutex> lock(mCallbackMutex);
-        mCallback = callback;
-    }
-
-    void onInjectSyncEvent(nsecs_t when) {
-        std::lock_guard<std::mutex> lock(mCallbackMutex);
-        if (mCallback) {
-            mCallback->onVSyncEvent(when);
-        }
-    }
-
-    void setVSyncEnabled(bool) override {}
-    void setPhaseOffset(nsecs_t) override {}
-
-private:
-    std::mutex mCallbackMutex; // Protects the following
-    VSyncSource::Callback* mCallback = nullptr;
-};
-
 // Do not call property_set on main thread which will be blocked by init
 // Use StartPropertySetThread instead.
 void SurfaceFlinger::init() {
@@ -681,33 +583,59 @@
     Mutex::Autolock _l(mStateLock);
 
     // start the EventThread
-    mEventThreadSource =
-            std::make_unique<DispSyncSource>(&mPrimaryDispSync, SurfaceFlinger::vsyncPhaseOffsetNs,
-                                             true, "app");
-    mEventThread = std::make_unique<impl::EventThread>(mEventThreadSource.get(),
-                                                       [this]() { resyncWithRateLimit(); },
-                                                       impl::EventThread::InterceptVSyncsCallback(),
-                                                       "appEventThread");
-    mSfEventThreadSource =
-            std::make_unique<DispSyncSource>(&mPrimaryDispSync,
-                                             SurfaceFlinger::sfVsyncPhaseOffsetNs, true, "sf");
+    if (mUseScheduler) {
+        mScheduler = std::make_unique<Scheduler>();
+        mAppConnectionHandle =
+                mScheduler->createConnection("appConnection", mPrimaryDispSync.get(),
+                                             SurfaceFlinger::vsyncPhaseOffsetNs,
+                                             [this] { resyncWithRateLimit(); },
+                                             impl::EventThread::InterceptVSyncsCallback());
+        mSfConnectionHandle =
+                mScheduler->createConnection("sfConnection", mPrimaryDispSync.get(),
+                                             SurfaceFlinger::sfVsyncPhaseOffsetNs,
+                                             [this] { resyncWithRateLimit(); },
+                                             [this](nsecs_t timestamp) {
+                                                 mInterceptor->saveVSyncEvent(timestamp);
+                                             });
 
-    mSFEventThread =
-            std::make_unique<impl::EventThread>(mSfEventThreadSource.get(),
-                                                [this]() { resyncWithRateLimit(); },
-                                                [this](nsecs_t timestamp) {
-                                                    mInterceptor->saveVSyncEvent(timestamp);
-                                                },
-                                                "sfEventThread");
-    mEventQueue->setEventThread(mSFEventThread.get());
-    mVsyncModulator.setEventThreads(mSFEventThread.get(), mEventThread.get());
+        mEventQueue->setEventConnection(mScheduler->getEventConnection(mSfConnectionHandle));
+        mVsyncModulator.setSchedulerAndHandles(mScheduler.get(), mAppConnectionHandle.get(),
+                                               mSfConnectionHandle.get());
+    } else {
+        mEventThreadSource =
+                std::make_unique<DispSyncSource>(mPrimaryDispSync.get(),
+                                                 SurfaceFlinger::vsyncPhaseOffsetNs, true, "app");
+        mEventThread =
+                std::make_unique<impl::EventThread>(mEventThreadSource.get(),
+                                                    [this] { resyncWithRateLimit(); },
+                                                    impl::EventThread::InterceptVSyncsCallback(),
+                                                    "appEventThread");
+        mSfEventThreadSource =
+                std::make_unique<DispSyncSource>(mPrimaryDispSync.get(),
+                                                 SurfaceFlinger::sfVsyncPhaseOffsetNs, true, "sf");
+
+        mSFEventThread =
+                std::make_unique<impl::EventThread>(mSfEventThreadSource.get(),
+                                                    [this] { resyncWithRateLimit(); },
+                                                    [this](nsecs_t timestamp) {
+                                                        mInterceptor->saveVSyncEvent(timestamp);
+                                                    },
+                                                    "sfEventThread");
+        mEventQueue->setEventThread(mSFEventThread.get());
+        mVsyncModulator.setEventThreads(mSFEventThread.get(), mEventThread.get());
+    }
 
     // Get a RenderEngine for the given display / config (can't fail)
+    int32_t renderEngineFeature = 0;
+    renderEngineFeature |= (useColorManagement ?
+                            renderengine::RenderEngine::USE_COLOR_MANAGEMENT : 0);
+    renderEngineFeature |= (useContextPriority ?
+                            renderengine::RenderEngine::USE_HIGH_PRIORITY_CONTEXT : 0);
+
+    // TODO(b/77156734): We need to stop casting and use HAL types when possible.
     getBE().mRenderEngine =
-            RE::impl::RenderEngine::create(HAL_PIXEL_FORMAT_RGBA_8888,
-                                           hasWideColorDisplay
-                                                   ? RE::RenderEngine::WIDE_COLOR_SUPPORT
-                                                   : 0);
+        renderengine::RenderEngine::create(static_cast<int32_t>(compositionPixelFormat),
+                                           renderEngineFeature);
     LOG_ALWAYS_FATAL_IF(getBE().mRenderEngine == nullptr, "couldn't create RenderEngine");
 
     LOG_ALWAYS_FATAL_IF(mVrFlingerRequestsDisplay,
@@ -717,31 +645,34 @@
     getBE().mHwc->registerCallback(this, getBE().mComposerSequenceId);
     // Process any initial hotplug and resulting display changes.
     processDisplayHotplugEventsLocked();
-    LOG_ALWAYS_FATAL_IF(!getBE().mHwc->isConnected(HWC_DISPLAY_PRIMARY),
-            "Registered composer callback but didn't create the default primary display");
+    const auto display = getDefaultDisplayDeviceLocked();
+    LOG_ALWAYS_FATAL_IF(!display, "Missing internal display after registering composer callback.");
+    LOG_ALWAYS_FATAL_IF(!getHwComposer().isConnected(display->getId()),
+                        "Internal display is disconnected.");
 
     // make the default display GLContext current so that we can create textures
     // when creating Layers (which may happens before we render something)
-    getDefaultDisplayDeviceLocked()->makeCurrent();
+    display->makeCurrent();
 
     if (useVrFlinger) {
-        auto vrFlingerRequestDisplayCallback = [this] (bool requestDisplay) {
+        auto vrFlingerRequestDisplayCallback = [this](bool requestDisplay) {
             // This callback is called from the vr flinger dispatch thread. We
             // need to call signalTransaction(), which requires holding
             // mStateLock when we're not on the main thread. Acquiring
             // mStateLock from the vr flinger dispatch thread might trigger a
             // deadlock in surface flinger (see b/66916578), so post a message
             // to be handled on the main thread instead.
-            sp<LambdaMessage> message = new LambdaMessage([=]() {
+            postMessageAsync(new LambdaMessage([=] {
                 ALOGI("VR request display mode: requestDisplay=%d", requestDisplay);
                 mVrFlingerRequestsDisplay = requestDisplay;
                 signalTransaction();
-            });
-            postMessageAsync(message);
+            }));
         };
-        mVrFlinger = dvr::VrFlinger::Create(getBE().mHwc->getComposer(),
-                getBE().mHwc->getHwcDisplayId(HWC_DISPLAY_PRIMARY).value_or(0),
-                vrFlingerRequestDisplayCallback);
+        mVrFlinger = dvr::VrFlinger::Create(getHwComposer().getComposer(),
+                                            getHwComposer()
+                                                    .getHwcDisplayId(display->getId())
+                                                    .value_or(0),
+                                            vrFlingerRequestDisplayCallback);
         if (!mVrFlinger) {
             ALOGE("Failed to start vrflinger");
         }
@@ -776,7 +707,7 @@
     // and apply this saturation matrix on Display P3 content. Unless the risk of applying
     // such saturation matrix on Display P3 is understood fully, the API should always return
     // identify matrix.
-    mEnhancedSaturationMatrix = getBE().mHwc->getDataspaceSaturationMatrix(HWC_DISPLAY_PRIMARY,
+    mEnhancedSaturationMatrix = getBE().mHwc->getDataspaceSaturationMatrix(display->getId(),
             Dataspace::SRGB_LINEAR);
 
     // we will apply this on Display P3.
@@ -858,18 +789,15 @@
     return NO_ERROR;
 }
 
-status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& display,
-        Vector<DisplayInfo>* configs) {
-    if (configs == nullptr || display.get() == nullptr) {
+status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& displayToken,
+                                           Vector<DisplayInfo>* configs) {
+    if (!displayToken || !configs) {
         return BAD_VALUE;
     }
 
-    if (!display.get())
-        return NAME_NOT_FOUND;
-
     int32_t type = NAME_NOT_FOUND;
-    for (int i=0 ; i<DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES ; i++) {
-        if (display == mBuiltinDisplays[i]) {
+    for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) {
+        if (displayToken == mDisplayTokens[i]) {
             type = i;
             break;
         }
@@ -881,18 +809,18 @@
 
     // TODO: Not sure if display density should handled by SF any longer
     class Density {
-        static int getDensityFromProperty(char const* propName) {
+        static float getDensityFromProperty(char const* propName) {
             char property[PROPERTY_VALUE_MAX];
-            int density = 0;
+            float density = 0.0f;
             if (property_get(propName, property, nullptr) > 0) {
-                density = atoi(property);
+                density = strtof(property, nullptr);
             }
             return density;
         }
     public:
-        static int getEmuDensity() {
+        static float getEmuDensity() {
             return getDensityFromProperty("qemu.sf.lcd_density"); }
-        static int getBuildDensity()  {
+        static float getBuildDensity()  {
             return getDensityFromProperty("ro.sf.lcd_density"); }
     };
 
@@ -906,6 +834,12 @@
         float xdpi = hwConfig->getDpiX();
         float ydpi = hwConfig->getDpiY();
 
+        info.w = hwConfig->getWidth();
+        info.h = hwConfig->getHeight();
+        // Default display viewport to display width and height
+        info.viewportW = info.w;
+        info.viewportH = info.h;
+
         if (type == DisplayDevice::DISPLAY_PRIMARY) {
             // The density of the device is provided by a build property
             float density = Density::getBuildDensity() / 160.0f;
@@ -923,8 +857,15 @@
             info.density = density;
 
             // TODO: this needs to go away (currently needed only by webkit)
-            sp<const DisplayDevice> hw(getDefaultDisplayDeviceLocked());
-            info.orientation = hw ? hw->getOrientation() : 0;
+            const auto display = getDefaultDisplayDeviceLocked();
+            info.orientation = display ? display->getOrientation() : 0;
+
+            // This is for screenrecord
+            const Rect viewport = display->getViewport();
+            if (viewport.isValid()) {
+                info.viewportW = uint32_t(viewport.getWidth());
+                info.viewportH = uint32_t(viewport.getHeight());
+            }
         } else {
             // TODO: where should this value come from?
             static const int TV_DENSITY = 213;
@@ -932,8 +873,6 @@
             info.orientation = 0;
         }
 
-        info.w = hwConfig->getWidth();
-        info.h = hwConfig->getHeight();
         info.xdpi = xdpi;
         info.ydpi = ydpi;
         info.fps = 1e9 / hwConfig->getVsyncPeriod();
@@ -958,7 +897,7 @@
         info.secure = true;
 
         if (type == DisplayDevice::DISPLAY_PRIMARY &&
-            mPrimaryDisplayOrientation & DisplayState::eOrientationSwapMask) {
+            primaryDisplayOrientation & DisplayState::eOrientationSwapMask) {
             std::swap(info.w, info.h);
         }
 
@@ -968,115 +907,74 @@
     return NO_ERROR;
 }
 
-status_t SurfaceFlinger::getDisplayStats(const sp<IBinder>& /* display */,
-        DisplayStatInfo* stats) {
-    if (stats == nullptr) {
+status_t SurfaceFlinger::getDisplayStats(const sp<IBinder>&, DisplayStatInfo* stats) {
+    if (!stats) {
         return BAD_VALUE;
     }
 
     // FIXME for now we always return stats for the primary display
     memset(stats, 0, sizeof(*stats));
-    stats->vsyncTime   = mPrimaryDispSync.computeNextRefresh(0);
-    stats->vsyncPeriod = mPrimaryDispSync.getPeriod();
+    stats->vsyncTime = mPrimaryDispSync->computeNextRefresh(0);
+    stats->vsyncPeriod = mPrimaryDispSync->getPeriod();
     return NO_ERROR;
 }
 
-status_t SurfaceFlinger::getDisplayViewport(const sp<IBinder>& display, Rect* outViewport) {
-    if (outViewport == nullptr || display.get() == nullptr) {
+int SurfaceFlinger::getActiveConfig(const sp<IBinder>& displayToken) {
+    const auto display = getDisplayDevice(displayToken);
+    if (!display) {
+        ALOGE("getActiveConfig: Invalid display token %p", displayToken.get());
         return BAD_VALUE;
     }
 
-    sp<const DisplayDevice> device(getDisplayDevice(display));
-    if (device == nullptr) {
-        return BAD_VALUE;
-    }
-
-    *outViewport = device->getViewport();
-
-    return NO_ERROR;
+    return display->getActiveConfig();
 }
 
-int SurfaceFlinger::getActiveConfig(const sp<IBinder>& display) {
-    if (display == nullptr) {
-        ALOGE("%s : display is nullptr", __func__);
-        return BAD_VALUE;
-    }
-
-    sp<const DisplayDevice> device(getDisplayDevice(display));
-    if (device != nullptr) {
-        return device->getActiveConfig();
-    }
-
-    return BAD_VALUE;
-}
-
-void SurfaceFlinger::setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode) {
-    ALOGD("Set active config mode=%d, type=%d flinger=%p", mode, hw->getDisplayType(),
-          this);
-    int32_t type = hw->getDisplayType();
-    int currentMode = hw->getActiveConfig();
-
+void SurfaceFlinger::setActiveConfigInternal(const sp<DisplayDevice>& display, int mode) {
+    int currentMode = display->getActiveConfig();
     if (mode == currentMode) {
-        ALOGD("Screen type=%d is already mode=%d", hw->getDisplayType(), mode);
         return;
     }
 
-    if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
+    if (display->isVirtual()) {
         ALOGW("Trying to set config for virtual display");
         return;
     }
 
-    hw->setActiveConfig(mode);
-    getHwComposer().setActiveConfig(type, mode);
+    display->setActiveConfig(mode);
+    getHwComposer().setActiveConfig(display->getDisplayType(), mode);
 }
 
-status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& display, int mode) {
-    class MessageSetActiveConfig: public MessageBase {
-        SurfaceFlinger& mFlinger;
-        sp<IBinder> mDisplay;
-        int mMode;
-    public:
-        MessageSetActiveConfig(SurfaceFlinger& flinger, const sp<IBinder>& disp,
-                               int mode) :
-            mFlinger(flinger), mDisplay(disp) { mMode = mode; }
-        virtual bool handler() {
-            Vector<DisplayInfo> configs;
-            mFlinger.getDisplayConfigs(mDisplay, &configs);
-            if (mMode < 0 || mMode >= static_cast<int>(configs.size())) {
-                ALOGE("Attempt to set active config = %d for display with %zu configs",
-                        mMode, configs.size());
-                return true;
-            }
-            sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay));
-            if (hw == nullptr) {
-                ALOGE("Attempt to set active config = %d for null display %p",
-                        mMode, mDisplay.get());
-            } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) {
-                ALOGW("Attempt to set active config = %d for virtual display",
-                        mMode);
-            } else {
-                mFlinger.setActiveConfigInternal(hw, mMode);
-            }
-            return true;
+status_t SurfaceFlinger::setActiveConfig(const sp<IBinder>& displayToken, int mode) {
+    postMessageSync(new LambdaMessage([&] {
+        Vector<DisplayInfo> configs;
+        getDisplayConfigs(displayToken, &configs);
+        if (mode < 0 || mode >= static_cast<int>(configs.size())) {
+            ALOGE("Attempt to set active config %d for display with %zu configs", mode,
+                  configs.size());
+            return;
         }
-    };
-    sp<MessageBase> msg = new MessageSetActiveConfig(*this, display, mode);
-    postMessageSync(msg);
+        const auto display = getDisplayDevice(displayToken);
+        if (!display) {
+            ALOGE("Attempt to set active config %d for invalid display token %p", mode,
+                  displayToken.get());
+        } else if (display->isVirtual()) {
+            ALOGW("Attempt to set active config %d for virtual display", mode);
+        } else {
+            setActiveConfigInternal(display, mode);
+        }
+    }));
+
     return NO_ERROR;
 }
-status_t SurfaceFlinger::getDisplayColorModes(const sp<IBinder>& display,
-        Vector<ColorMode>* outColorModes) {
-    if ((outColorModes == nullptr) || (display.get() == nullptr)) {
+status_t SurfaceFlinger::getDisplayColorModes(const sp<IBinder>& displayToken,
+                                              Vector<ColorMode>* outColorModes) {
+    if (!displayToken || !outColorModes) {
         return BAD_VALUE;
     }
 
-    if (!display.get()) {
-        return NAME_NOT_FOUND;
-    }
-
     int32_t type = NAME_NOT_FOUND;
-    for (int i=0 ; i<DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES ; i++) {
-        if (display == mBuiltinDisplays[i]) {
+    for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) {
+        if (displayToken == mDisplayTokens[i]) {
             type = i;
             break;
         }
@@ -1098,79 +996,62 @@
     return NO_ERROR;
 }
 
-ColorMode SurfaceFlinger::getActiveColorMode(const sp<IBinder>& display) {
-    sp<const DisplayDevice> device(getDisplayDevice(display));
-    if (device != nullptr) {
-        return device->getActiveColorMode();
+ColorMode SurfaceFlinger::getActiveColorMode(const sp<IBinder>& displayToken) {
+    if (const auto display = getDisplayDevice(displayToken)) {
+        return display->getActiveColorMode();
     }
     return static_cast<ColorMode>(BAD_VALUE);
 }
 
-void SurfaceFlinger::setActiveColorModeInternal(const sp<DisplayDevice>& hw,
-                                                ColorMode mode, Dataspace dataSpace,
-                                                RenderIntent renderIntent) {
-    int32_t type = hw->getDisplayType();
-    ColorMode currentMode = hw->getActiveColorMode();
-    Dataspace currentDataSpace = hw->getCompositionDataSpace();
-    RenderIntent currentRenderIntent = hw->getActiveRenderIntent();
+void SurfaceFlinger::setActiveColorModeInternal(const sp<DisplayDevice>& display, ColorMode mode,
+                                                Dataspace dataSpace, RenderIntent renderIntent) {
+    ColorMode currentMode = display->getActiveColorMode();
+    Dataspace currentDataSpace = display->getCompositionDataSpace();
+    RenderIntent currentRenderIntent = display->getActiveRenderIntent();
 
     if (mode == currentMode && dataSpace == currentDataSpace &&
         renderIntent == currentRenderIntent) {
         return;
     }
 
-    if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
+    if (display->isVirtual()) {
         ALOGW("Trying to set config for virtual display");
         return;
     }
 
-    hw->setActiveColorMode(mode);
-    hw->setCompositionDataSpace(dataSpace);
-    hw->setActiveRenderIntent(renderIntent);
-    getHwComposer().setActiveColorMode(type, mode, renderIntent);
+    display->setActiveColorMode(mode);
+    display->setCompositionDataSpace(dataSpace);
+    display->setActiveRenderIntent(renderIntent);
+    getHwComposer().setActiveColorMode(display->getDisplayType(), mode, renderIntent);
 
     ALOGV("Set active color mode: %s (%d), active render intent: %s (%d), type=%d",
-          decodeColorMode(mode).c_str(), mode,
-          decodeRenderIntent(renderIntent).c_str(), renderIntent,
-          hw->getDisplayType());
+          decodeColorMode(mode).c_str(), mode, decodeRenderIntent(renderIntent).c_str(),
+          renderIntent, display->getDisplayType());
 }
 
-
-status_t SurfaceFlinger::setActiveColorMode(const sp<IBinder>& display,
-        ColorMode colorMode) {
-    class MessageSetActiveColorMode: public MessageBase {
-        SurfaceFlinger& mFlinger;
-        sp<IBinder> mDisplay;
-        ColorMode mMode;
-    public:
-        MessageSetActiveColorMode(SurfaceFlinger& flinger, const sp<IBinder>& disp,
-                               ColorMode mode) :
-            mFlinger(flinger), mDisplay(disp) { mMode = mode; }
-        virtual bool handler() {
-            Vector<ColorMode> modes;
-            mFlinger.getDisplayColorModes(mDisplay, &modes);
-            bool exists = std::find(std::begin(modes), std::end(modes), mMode) != std::end(modes);
-            if (mMode < ColorMode::NATIVE || !exists) {
-                ALOGE("Attempt to set invalid active color mode %s (%d) for display %p",
-                      decodeColorMode(mMode).c_str(), mMode, mDisplay.get());
-                return true;
-            }
-            sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay));
-            if (hw == nullptr) {
-                ALOGE("Attempt to set active color mode %s (%d) for null display %p",
-                      decodeColorMode(mMode).c_str(), mMode, mDisplay.get());
-            } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) {
-                ALOGW("Attempt to set active color mode %s %d for virtual display",
-                      decodeColorMode(mMode).c_str(), mMode);
-            } else {
-                mFlinger.setActiveColorModeInternal(hw, mMode, Dataspace::UNKNOWN,
-                                                    RenderIntent::COLORIMETRIC);
-            }
-            return true;
+status_t SurfaceFlinger::setActiveColorMode(const sp<IBinder>& displayToken, ColorMode mode) {
+    postMessageSync(new LambdaMessage([&] {
+        Vector<ColorMode> modes;
+        getDisplayColorModes(displayToken, &modes);
+        bool exists = std::find(std::begin(modes), std::end(modes), mode) != std::end(modes);
+        if (mode < ColorMode::NATIVE || !exists) {
+            ALOGE("Attempt to set invalid active color mode %s (%d) for display token %p",
+                  decodeColorMode(mode).c_str(), mode, displayToken.get());
+            return;
         }
-    };
-    sp<MessageBase> msg = new MessageSetActiveColorMode(*this, display, colorMode);
-    postMessageSync(msg);
+        const auto display = getDisplayDevice(displayToken);
+        if (!display) {
+            ALOGE("Attempt to set active color mode %s (%d) for invalid display token %p",
+                  decodeColorMode(mode).c_str(), mode, displayToken.get());
+        } else if (display->isVirtual()) {
+            ALOGW("Attempt to set active color mode %s (%d) for virtual display",
+                  decodeColorMode(mode).c_str(), mode);
+        } else {
+            setActiveColorModeInternal(display, mode, Dataspace::UNKNOWN,
+                                       RenderIntent::COLORIMETRIC);
+        }
+    }));
+
     return NO_ERROR;
 }
 
@@ -1186,20 +1067,20 @@
     return NO_ERROR;
 }
 
-status_t SurfaceFlinger::getHdrCapabilities(const sp<IBinder>& display,
-        HdrCapabilities* outCapabilities) const {
+status_t SurfaceFlinger::getHdrCapabilities(const sp<IBinder>& displayToken,
+                                            HdrCapabilities* outCapabilities) const {
     Mutex::Autolock _l(mStateLock);
 
-    sp<const DisplayDevice> displayDevice(getDisplayDeviceLocked(display));
-    if (displayDevice == nullptr) {
-        ALOGE("getHdrCapabilities: Invalid display %p", displayDevice.get());
+    const auto display = getDisplayDeviceLocked(displayToken);
+    if (!display) {
+        ALOGE("getHdrCapabilities: Invalid display token %p", displayToken.get());
         return BAD_VALUE;
     }
 
     // At this point the DisplayDeivce should already be set up,
     // meaning the luminance information is already queried from
     // hardware composer and stored properly.
-    const HdrCapabilities& capabilities = displayDevice->getHdrCapabilities();
+    const HdrCapabilities& capabilities = display->getHdrCapabilities();
     *outCapabilities = HdrCapabilities(capabilities.getSupportedHdrTypes(),
                                        capabilities.getDesiredMaxLuminance(),
                                        capabilities.getDesiredMaxAverageLuminance(),
@@ -1209,20 +1090,21 @@
 }
 
 status_t SurfaceFlinger::enableVSyncInjections(bool enable) {
-    sp<LambdaMessage> enableVSyncInjections = new LambdaMessage([&]() {
+    postMessageSync(new LambdaMessage([&] {
         Mutex::Autolock _l(mStateLock);
 
         if (mInjectVSyncs == enable) {
             return;
         }
 
+        // TODO(akrulec): Part of the Injector should be refactored, so that it
+        // can be passed to Scheduler.
         if (enable) {
             ALOGV("VSync Injections enabled");
             if (mVSyncInjector.get() == nullptr) {
                 mVSyncInjector = std::make_unique<InjectVSyncSource>();
                 mInjectorEventThread = std::make_unique<
-                        impl::EventThread>(mVSyncInjector.get(),
-                                           [this]() { resyncWithRateLimit(); },
+                        impl::EventThread>(mVSyncInjector.get(), [this] { resyncWithRateLimit(); },
                                            impl::EventThread::InterceptVSyncsCallback(),
                                            "injEventThread");
             }
@@ -1233,8 +1115,8 @@
         }
 
         mInjectVSyncs = enable;
-    });
-    postMessageSync(enableVSyncInjections);
+    }));
+
     return NO_ERROR;
 }
 
@@ -1254,15 +1136,6 @@
 
 status_t SurfaceFlinger::getLayerDebugInfo(std::vector<LayerDebugInfo>* outLayers) const
         NO_THREAD_SAFETY_ANALYSIS {
-    IPCThreadState* ipc = IPCThreadState::self();
-    const int pid = ipc->getCallingPid();
-    const int uid = ipc->getCallingUid();
-    if ((uid != AID_SHELL) &&
-            !PermissionCache::checkPermission(sDump, pid, uid)) {
-        ALOGE("Layer debug info permission denied for pid=%d, uid=%d", pid, uid);
-        return PERMISSION_DENIED;
-    }
-
     // Try to acquire a lock for 1s, fail gracefully
     const status_t err = mStateLock.timedLock(s2ns(1));
     const bool locked = (err == NO_ERROR);
@@ -1280,14 +1153,29 @@
     return NO_ERROR;
 }
 
+status_t SurfaceFlinger::getCompositionPreference(Dataspace* outDataSpace,
+                                                  ui::PixelFormat* outPixelFormat) const {
+    *outDataSpace = compositionDataSpace;
+    *outPixelFormat = compositionPixelFormat;
+    return NO_ERROR;
+}
+
 // ----------------------------------------------------------------------------
 
 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection(
         ISurfaceComposer::VsyncSource vsyncSource) {
-    if (vsyncSource == eVsyncSourceSurfaceFlinger) {
-        return mSFEventThread->createEventConnection();
+    if (mUseScheduler) {
+        if (vsyncSource == eVsyncSourceSurfaceFlinger) {
+            return mScheduler->createDisplayEventConnection(mSfConnectionHandle);
+        } else {
+            return mScheduler->createDisplayEventConnection(mAppConnectionHandle);
+        }
     } else {
-        return mEventThread->createEventConnection();
+        if (vsyncSource == eVsyncSourceSurfaceFlinger) {
+            return mSFEventThread->createEventConnection();
+        } else {
+            return mEventThread->createEventConnection();
+        }
     }
 }
 
@@ -1333,8 +1221,7 @@
 void SurfaceFlinger::enableHardwareVsync() {
     Mutex::Autolock _l(mHWVsyncLock);
     if (!mPrimaryHWVsyncEnabled && mHWVsyncAvailable) {
-        mPrimaryDispSync.beginResync();
-        //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, true);
+        mPrimaryDispSync->beginResync();
         mEventControlThread->setVsyncEnabled(true);
         mPrimaryHWVsyncEnabled = true;
     }
@@ -1351,15 +1238,19 @@
         return;
     }
 
-    const auto& activeConfig = getBE().mHwc->getActiveConfig(HWC_DISPLAY_PRIMARY);
+    const auto displayId = DisplayDevice::DISPLAY_PRIMARY;
+    if (!getHwComposer().isConnected(displayId)) {
+        return;
+    }
+
+    const auto activeConfig = getHwComposer().getActiveConfig(displayId);
     const nsecs_t period = activeConfig->getVsyncPeriod();
 
-    mPrimaryDispSync.reset();
-    mPrimaryDispSync.setPeriod(period);
+    mPrimaryDispSync->reset();
+    mPrimaryDispSync->setPeriod(period);
 
     if (!mPrimaryHWVsyncEnabled) {
-        mPrimaryDispSync.beginResync();
-        //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, true);
+        mPrimaryDispSync->beginResync();
         mEventControlThread->setVsyncEnabled(true);
         mPrimaryHWVsyncEnabled = true;
     }
@@ -1368,9 +1259,8 @@
 void SurfaceFlinger::disableHardwareVsync(bool makeUnavailable) {
     Mutex::Autolock _l(mHWVsyncLock);
     if (mPrimaryHWVsyncEnabled) {
-        //eventControl(HWC_DISPLAY_PRIMARY, SurfaceFlinger::EVENT_VSYNC, false);
         mEventControlThread->setVsyncEnabled(false);
-        mPrimaryDispSync.endResync();
+        mPrimaryDispSync->endResync();
         mPrimaryHWVsyncEnabled = false;
     }
     if (makeUnavailable) {
@@ -1390,8 +1280,10 @@
     sLastResyncAttempted = now;
 }
 
-void SurfaceFlinger::onVsyncReceived(int32_t sequenceId,
-        hwc2_display_t displayId, int64_t timestamp) {
+void SurfaceFlinger::onVsyncReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
+                                     int64_t timestamp) {
+    ATRACE_NAME("SF onVsync");
+
     Mutex::Autolock lock(mStateLock);
     // Ignore any vsyncs from a previous hardware composer.
     if (sequenceId != getBE().mComposerSequenceId) {
@@ -1399,7 +1291,12 @@
     }
 
     int32_t type;
-    if (!getBE().mHwc->onVsync(displayId, timestamp, &type)) {
+    if (!getBE().mHwc->onVsync(hwcDisplayId, timestamp, &type)) {
+        return;
+    }
+
+    if (type != DisplayDevice::DISPLAY_PRIMARY) {
+        // For now, we don't do anything with external display vsyncs.
         return;
     }
 
@@ -1407,8 +1304,8 @@
 
     { // Scope for the lock
         Mutex::Autolock _l(mHWVsyncLock);
-        if (type == DisplayDevice::DISPLAY_PRIMARY && mPrimaryHWVsyncEnabled) {
-            needsHwVsync = mPrimaryDispSync.addResyncSample(timestamp);
+        if (mPrimaryHWVsyncEnabled) {
+            needsHwVsync = mPrimaryDispSync->addResyncSample(timestamp);
         }
     }
 
@@ -1424,9 +1321,9 @@
     *compositorTiming = getBE().mCompositorTiming;
 }
 
-void SurfaceFlinger::onHotplugReceived(int32_t sequenceId, hwc2_display_t display,
+void SurfaceFlinger::onHotplugReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
                                        HWC2::Connection connection) {
-    ALOGV("onHotplugReceived(%d, %" PRIu64 ", %s)", sequenceId, display,
+    ALOGV("%s(%d, %" PRIu64 ", %s)", __FUNCTION__, sequenceId, hwcDisplayId,
           connection == HWC2::Connection::Connected ? "connected" : "disconnected");
 
     // Ignore events that do not have the right sequenceId.
@@ -1440,7 +1337,7 @@
     // acquire it here.
     ConditionalLock lock(mStateLock, std::this_thread::get_id() != mMainThreadId);
 
-    mPendingHotplugEvents.emplace_back(HotplugEvent{display, connection});
+    mPendingHotplugEvents.emplace_back(HotplugEvent{hwcDisplayId, connection});
 
     if (std::this_thread::get_id() == mMainThreadId) {
         // Process all pending hot plug events immediately if we are on the main thread.
@@ -1450,8 +1347,7 @@
     setTransactionFlags(eDisplayTransactionNeeded);
 }
 
-void SurfaceFlinger::onRefreshReceived(int sequenceId,
-                                       hwc2_display_t /*display*/) {
+void SurfaceFlinger::onRefreshReceived(int sequenceId, hwc2_display_t /*hwcDisplayId*/) {
     Mutex::Autolock lock(mStateLock);
     if (sequenceId != getBE().mComposerSequenceId) {
         return;
@@ -1496,8 +1392,13 @@
 
     Mutex::Autolock _l(mStateLock);
 
-    int currentDisplayPowerMode = getDisplayDeviceLocked(
-            mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY])->getPowerMode();
+    sp<DisplayDevice> display = getDefaultDisplayDeviceLocked();
+    LOG_ALWAYS_FATAL_IF(!display);
+    const int currentDisplayPowerMode = display->getPowerMode();
+    // This DisplayDevice will no longer be relevant once resetDisplayState() is
+    // called below. Clear the reference now so we don't accidentally use it
+    // later.
+    display.clear();
 
     if (!vrFlingerRequestsDisplay) {
         mVrFlinger->SeizeDisplayOwnership();
@@ -1514,28 +1415,33 @@
 
     if (vrFlingerRequestsDisplay) {
         mVrFlinger->GrantDisplayOwnership();
-    } else {
-        enableHardwareVsync();
     }
 
     mVisibleRegionsDirty = true;
     invalidateHwcGeometry();
 
     // Re-enable default display.
-    sp<DisplayDevice> hw(getDisplayDeviceLocked(
-            mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]));
-    setPowerModeInternal(hw, currentDisplayPowerMode, /*stateLockHeld*/ true);
+    display = getDefaultDisplayDeviceLocked();
+    LOG_ALWAYS_FATAL_IF(!display);
+    setPowerModeInternal(display, currentDisplayPowerMode, /*stateLockHeld*/ true);
 
     // Reset the timing values to account for the period of the swapped in HWC
-    const auto& activeConfig = getBE().mHwc->getActiveConfig(HWC_DISPLAY_PRIMARY);
+    const auto activeConfig = getHwComposer().getActiveConfig(display->getId());
     const nsecs_t period = activeConfig->getVsyncPeriod();
     mAnimFrameTracker.setDisplayRefreshPeriod(period);
 
+    // The present fences returned from vr_hwc are not an accurate
+    // representation of vsync times.
+    mPrimaryDispSync->setIgnorePresentFences(getBE().mHwc->isUsingVrComposer() ||
+                                             !hasSyncFramework);
+
     // Use phase of 0 since phase is not known.
     // Use latency of 0, which will snap to the ideal latency.
     setCompositorTimingSnapped(0, period, 0);
 
-    android_atomic_or(1, &mRepaintEverything);
+    resyncToHardwareVsync(false);
+
+    mRepaintEverything = true;
     setTransactionFlags(eDisplayTransactionNeeded);
 }
 
@@ -1547,6 +1453,7 @@
                     mPreviousPresentFence != Fence::NO_FENCE &&
                     (mPreviousPresentFence->getSignalTime() ==
                             Fence::SIGNAL_TIME_PENDING);
+            mFrameMissedCount += frameMissed;
             ATRACE_INT("FrameMissed", static_cast<int>(frameMissed));
             if (frameMissed) {
                 mTimeStats.incrementMissedFrames();
@@ -1588,83 +1495,203 @@
     return false;
 }
 
-bool SurfaceFlinger::handleMessageInvalidate() {
-    ATRACE_CALL();
-    return handlePageFlip();
-}
-
 void SurfaceFlinger::handleMessageRefresh() {
     ATRACE_CALL();
 
     mRefreshPending = false;
 
-    nsecs_t refreshStartTime = systemTime(SYSTEM_TIME_MONOTONIC);
-
-    preComposition(refreshStartTime);
+    const bool repaintEverything = mRepaintEverything.exchange(false);
+    preComposition();
     rebuildLayerStacks();
-    setUpHWComposer();
-    doDebugFlashRegions();
+    calculateWorkingSet();
+
+    for (const auto& [token, display] : mDisplays) {
+        const auto displayId = display->getId();
+        beginFrame(display);
+        for (auto& compositionInfo : getBE().mCompositionInfo[displayId]) {
+            setUpHWComposer(compositionInfo);
+        }
+        prepareFrame(display);
+        doDebugFlashRegions(display, repaintEverything);
+        doComposition(display, repaintEverything);
+    }
+
     doTracing("handleRefresh");
     logLayerStats();
-    doComposition();
-    postComposition(refreshStartTime);
 
-    mPreviousPresentFence = getBE().mHwc->getPresentFence(HWC_DISPLAY_PRIMARY);
+    postFrame();
+    postComposition();
 
     mHadClientComposition = false;
-    for (size_t displayId = 0; displayId < mDisplays.size(); ++displayId) {
-        const sp<DisplayDevice>& displayDevice = mDisplays[displayId];
+    for (const auto& [token, display] : mDisplays) {
         mHadClientComposition = mHadClientComposition ||
-                getBE().mHwc->hasClientComposition(displayDevice->getHwcDisplayId());
+                getBE().mHwc->hasClientComposition(display->getId());
     }
+
+    // Setup RenderEngine sync fences if native sync is supported.
+    if (getBE().mRenderEngine->useNativeFenceSync()) {
+        if (mHadClientComposition) {
+            base::unique_fd flushFence(getRenderEngine().flush());
+            ALOGE_IF(flushFence < 0, "Failed to flush RenderEngine!");
+            getBE().flushFence = new Fence(std::move(flushFence));
+        } else {
+            // Cleanup for hygiene.
+            getBE().flushFence = Fence::NO_FENCE;
+        }
+    }
+
     mVsyncModulator.onRefreshed(mHadClientComposition);
 
+    getBE().mEndOfFrameCompositionInfo = std::move(getBE().mCompositionInfo);
+    for (const auto& [token, display] : mDisplays) {
+        const auto displayId = display->getId();
+        for (auto& compositionInfo : getBE().mEndOfFrameCompositionInfo[displayId]) {
+            compositionInfo.hwc.hwcLayer = nullptr;
+        }
+    }
+
     mLayersWithQueuedFrames.clear();
 }
 
-void SurfaceFlinger::doDebugFlashRegions()
-{
-    // is debugging enabled
-    if (CC_LIKELY(!mDebugRegion))
-        return;
 
-    const bool repaintEverything = mRepaintEverything;
-    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-        const sp<DisplayDevice>& hw(mDisplays[dpy]);
-        if (hw->isDisplayOn()) {
-            // transform the dirty region into this screen's coordinate space
-            const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
-            if (!dirtyRegion.isEmpty()) {
-                // redraw the whole screen
-                doComposeSurfaces(hw);
+bool SurfaceFlinger::handleMessageInvalidate() {
+    ATRACE_CALL();
+    return handlePageFlip();
+}
 
-                // and draw the dirty region
-                const int32_t height = hw->getHeight();
-                auto& engine(getRenderEngine());
-                engine.fillRegionWithColor(dirtyRegion, height, 1, 0, 1, 1);
+void SurfaceFlinger::calculateWorkingSet() {
+    ATRACE_CALL();
+    ALOGV(__FUNCTION__);
 
-                hw->swapBuffers(getHwComposer());
+    // build the h/w work list
+    if (CC_UNLIKELY(mGeometryInvalid)) {
+        mGeometryInvalid = false;
+        for (const auto& [token, display] : mDisplays) {
+            const auto displayId = display->getId();
+            if (displayId >= 0) {
+                const Vector<sp<Layer>>& currentLayers(
+                        display->getVisibleLayersSortedByZ());
+                for (size_t i = 0; i < currentLayers.size(); i++) {
+                    const auto& layer = currentLayers[i];
+
+                    if (!layer->hasHwcLayer(displayId)) {
+                        if (!layer->createHwcLayer(getBE().mHwc.get(), displayId)) {
+                            layer->forceClientComposition(displayId);
+                            continue;
+                        }
+                    }
+
+                    layer->setGeometry(display, i);
+                    if (mDebugDisableHWC || mDebugRegion) {
+                        layer->forceClientComposition(displayId);
+                    }
+                }
             }
         }
     }
 
-    postFramebuffer();
+    // Set the per-frame data
+    for (const auto& [token, display] : mDisplays) {
+        const auto displayId = display->getId();
+        if (displayId < 0) {
+            continue;
+        }
+
+        if (mDrawingState.colorMatrixChanged) {
+            display->setColorTransform(mDrawingState.colorMatrix);
+            status_t result = getBE().mHwc->setColorTransform(displayId, mDrawingState.colorMatrix);
+            ALOGE_IF(result != NO_ERROR, "Failed to set color transform on "
+                    "display %d: %d", displayId, result);
+        }
+        for (auto& layer : display->getVisibleLayersSortedByZ()) {
+            if (layer->isHdrY410()) {
+                layer->forceClientComposition(displayId);
+            } else if ((layer->getDataSpace() == Dataspace::BT2020_PQ ||
+                        layer->getDataSpace() == Dataspace::BT2020_ITU_PQ) &&
+                    !display->hasHDR10Support()) {
+                layer->forceClientComposition(displayId);
+            } else if ((layer->getDataSpace() == Dataspace::BT2020_HLG ||
+                        layer->getDataSpace() == Dataspace::BT2020_ITU_HLG) &&
+                    !display->hasHLGSupport()) {
+                layer->forceClientComposition(displayId);
+            }
+
+            // TODO(b/111562338) remove when composer 2.3 is shipped.
+            if (layer->hasColorTransform()) {
+                layer->forceClientComposition(displayId);
+            }
+
+            if (layer->getForceClientComposition(displayId)) {
+                ALOGV("[%s] Requesting Client composition", layer->getName().string());
+                layer->setCompositionType(displayId, HWC2::Composition::Client);
+                continue;
+            }
+
+            layer->setPerFrameData(display);
+        }
+
+        if (useColorManagement) {
+            ColorMode  colorMode;
+            Dataspace dataSpace;
+            RenderIntent renderIntent;
+            pickColorMode(display, &colorMode, &dataSpace, &renderIntent);
+            setActiveColorModeInternal(display, colorMode, dataSpace, renderIntent);
+        }
+    }
+
+    mDrawingState.colorMatrixChanged = false;
+
+    for (const auto& [token, display] : mDisplays) {
+        const auto displayId = display->getId();
+        getBE().mCompositionInfo[displayId].clear();
+        for (auto& layer : display->getVisibleLayersSortedByZ()) {
+            auto displayId = display->getId();
+            layer->getBE().compositionInfo.compositionType = layer->getCompositionType(displayId);
+            if (!layer->setHwcLayer(displayId)) {
+                ALOGV("Need to create HWCLayer for %s", layer->getName().string());
+            }
+            layer->getBE().compositionInfo.hwc.displayId = displayId;
+            getBE().mCompositionInfo[displayId].push_back(layer->getBE().compositionInfo);
+            layer->getBE().compositionInfo.hwc.hwcLayer = nullptr;
+        }
+    }
+}
+
+void SurfaceFlinger::doDebugFlashRegions(const sp<DisplayDevice>& display, bool repaintEverything)
+{
+    const auto displayId = display->getId();
+    // is debugging enabled
+    if (CC_LIKELY(!mDebugRegion))
+        return;
+
+    if (display->isPoweredOn()) {
+        // transform the dirty region into this screen's coordinate space
+        const Region dirtyRegion(display->getDirtyRegion(repaintEverything));
+        if (!dirtyRegion.isEmpty()) {
+            // redraw the whole screen
+            doComposeSurfaces(display);
+
+            // and draw the dirty region
+            auto& engine(getRenderEngine());
+            engine.fillRegionWithColor(dirtyRegion, 1, 0, 1, 1);
+
+            display->swapBuffers(getHwComposer());
+        }
+    }
+
+    postFramebuffer(display);
 
     if (mDebugRegion > 1) {
         usleep(mDebugRegion * 1000);
     }
 
-    for (size_t displayId = 0; displayId < mDisplays.size(); ++displayId) {
-        auto& displayDevice = mDisplays[displayId];
-        if (!displayDevice->isDisplayOn()) {
-            continue;
-        }
-
-        status_t result = displayDevice->prepareFrame(*getBE().mHwc);
+    if (display->isPoweredOn()) {
+        status_t result = display->prepareFrame(
+                *getBE().mHwc, getBE().mCompositionInfo[displayId]);
         ALOGE_IF(result != NO_ERROR,
-                 "prepareFrame for display %zd failed:"
+                 "prepareFrame for display %d failed:"
                  " %d (%s)",
-                 displayId, result, strerror(-result));
+                 display->getId(), result, strerror(-result));
     }
 }
 
@@ -1679,30 +1706,27 @@
 void SurfaceFlinger::logLayerStats() {
     ATRACE_CALL();
     if (CC_UNLIKELY(mLayerStats.isEnabled())) {
-        int32_t hwcId = -1;
-        for (size_t dpy = 0; dpy < mDisplays.size(); ++dpy) {
-            const sp<const DisplayDevice>& displayDevice(mDisplays[dpy]);
-            if (displayDevice->isPrimary()) {
-                hwcId = displayDevice->getHwcDisplayId();
-                break;
+        for (const auto& [token, display] : mDisplays) {
+            if (display->isPrimary()) {
+                mLayerStats.logLayerStats(dumpVisibleLayersProtoInfo(*display));
+                return;
             }
         }
-        if (hwcId < 0) {
-            ALOGE("LayerStats: Hmmm, no primary display?");
-            return;
-        }
-        mLayerStats.logLayerStats(dumpVisibleLayersProtoInfo(hwcId));
+
+        ALOGE("logLayerStats: no primary display");
     }
 }
 
-void SurfaceFlinger::preComposition(nsecs_t refreshStartTime)
+void SurfaceFlinger::preComposition()
 {
     ATRACE_CALL();
     ALOGV("preComposition");
 
+    mRefreshStartTime = systemTime(SYSTEM_TIME_MONOTONIC);
+
     bool needExtraInvalidate = false;
     mDrawingState.traverseInZOrder([&](Layer* layer) {
-        if (layer->onPreComposition(refreshStartTime)) {
+        if (layer->onPreComposition(mRefreshStartTime)) {
             needExtraInvalidate = true;
         }
     });
@@ -1771,7 +1795,7 @@
     getBE().mCompositorTiming.presentLatency = snappedCompositeToPresentLatency;
 }
 
-void SurfaceFlinger::postComposition(nsecs_t refreshStartTime)
+void SurfaceFlinger::postComposition()
 {
     ATRACE_CALL();
     ALOGV("postComposition");
@@ -1783,31 +1807,32 @@
     }
 
     // |mStateLock| not needed as we are on the main thread
-    const sp<const DisplayDevice> hw(getDefaultDisplayDeviceLocked());
+    const auto display = getDefaultDisplayDeviceLocked();
 
     getBE().mGlCompositionDoneTimeline.updateSignalTimes();
     std::shared_ptr<FenceTime> glCompositionDoneFenceTime;
-    if (hw && getBE().mHwc->hasClientComposition(HWC_DISPLAY_PRIMARY)) {
+    if (display && getHwComposer().hasClientComposition(display->getId())) {
         glCompositionDoneFenceTime =
-                std::make_shared<FenceTime>(hw->getClientTargetAcquireFence());
+                std::make_shared<FenceTime>(display->getClientTargetAcquireFence());
         getBE().mGlCompositionDoneTimeline.push(glCompositionDoneFenceTime);
     } else {
         glCompositionDoneFenceTime = FenceTime::NO_FENCE;
     }
 
     getBE().mDisplayTimeline.updateSignalTimes();
-    sp<Fence> presentFence = getBE().mHwc->getPresentFence(HWC_DISPLAY_PRIMARY);
-    auto presentFenceTime = std::make_shared<FenceTime>(presentFence);
+    mPreviousPresentFence =
+            display ? getHwComposer().getPresentFence(display->getId()) : Fence::NO_FENCE;
+    auto presentFenceTime = std::make_shared<FenceTime>(mPreviousPresentFence);
     getBE().mDisplayTimeline.push(presentFenceTime);
 
-    nsecs_t vsyncPhase = mPrimaryDispSync.computeNextRefresh(0);
-    nsecs_t vsyncInterval = mPrimaryDispSync.getPeriod();
+    nsecs_t vsyncPhase = mPrimaryDispSync->computeNextRefresh(0);
+    nsecs_t vsyncInterval = mPrimaryDispSync->getPeriod();
 
-    // We use the refreshStartTime which might be sampled a little later than
+    // We use the mRefreshStartTime which might be sampled a little later than
     // when we started doing work for this frame, but that should be okay
     // since updateCompositorTiming has snapping logic.
     updateCompositorTiming(
-        vsyncPhase, vsyncInterval, refreshStartTime, presentFenceTime);
+        vsyncPhase, vsyncInterval, mRefreshStartTime, presentFenceTime);
     CompositorTiming compositorTiming;
     {
         std::lock_guard<std::mutex> lock(getBE().mCompositorTimingLock);
@@ -1824,7 +1849,7 @@
     });
 
     if (presentFenceTime->isValid()) {
-        if (mPrimaryDispSync.addPresentFence(presentFenceTime)) {
+        if (mPrimaryDispSync->addPresentFence(presentFenceTime)) {
             enableHardwareVsync();
         } else {
             disableHardwareVsync(false);
@@ -1832,7 +1857,7 @@
     }
 
     if (!hasSyncFramework) {
-        if (getBE().mHwc->isConnected(HWC_DISPLAY_PRIMARY) && hw->isDisplayOn()) {
+        if (display && getHwComposer().isConnected(display->getId()) && display->isPoweredOn()) {
             enableHardwareVsync();
         }
     }
@@ -1843,11 +1868,10 @@
         if (presentFenceTime->isValid()) {
             mAnimFrameTracker.setActualPresentFence(
                     std::move(presentFenceTime));
-        } else if (getBE().mHwc->isConnected(HWC_DISPLAY_PRIMARY)) {
+        } else if (display && getHwComposer().isConnected(display->getId())) {
             // The HWC doesn't support present fences, so use the refresh
             // timestamp instead.
-            nsecs_t presentTime =
-                    getBE().mHwc->getRefreshTimestamp(HWC_DISPLAY_PRIMARY);
+            const nsecs_t presentTime = getHwComposer().getRefreshTimestamp(display->getId());
             mAnimFrameTracker.setActualPresentTime(presentTime);
         }
         mAnimFrameTracker.advanceFrame();
@@ -1858,8 +1882,8 @@
         mTimeStats.incrementClientCompositionFrames();
     }
 
-    if (getBE().mHwc->isConnected(HWC_DISPLAY_PRIMARY) &&
-            hw->getPowerMode() == HWC_POWER_MODE_OFF) {
+    if (display && getHwComposer().isConnected(display->getId()) &&
+        display->getPowerMode() == HWC_POWER_MODE_OFF) {
         return;
     }
 
@@ -1900,21 +1924,20 @@
         mVisibleRegionsDirty = false;
         invalidateHwcGeometry();
 
-        for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        for (const auto& pair : mDisplays) {
+            const auto& display = pair.second;
             Region opaqueRegion;
             Region dirtyRegion;
             Vector<sp<Layer>> layersSortedByZ;
             Vector<sp<Layer>> layersNeedingFences;
-            const sp<DisplayDevice>& displayDevice(mDisplays[dpy]);
-            const Transform& tr(displayDevice->getTransform());
-            const Rect bounds(displayDevice->getBounds());
-            if (displayDevice->isDisplayOn()) {
-                computeVisibleRegions(displayDevice, dirtyRegion, opaqueRegion);
+            const ui::Transform& tr = display->getTransform();
+            const Rect bounds = display->getBounds();
+            if (display->isPoweredOn()) {
+                computeVisibleRegions(display, dirtyRegion, opaqueRegion);
 
                 mDrawingState.traverseInZOrder([&](Layer* layer) {
                     bool hwcLayerDestroyed = false;
-                    if (layer->belongsToDisplay(displayDevice->getLayerStack(),
-                                displayDevice->isPrimary())) {
+                    if (layer->belongsToDisplay(display->getLayerStack(), display->isPrimary())) {
                         Region drawRegion(tr.transform(
                                 layer->visibleNonTransparentRegion));
                         drawRegion.andSelf(bounds);
@@ -1923,15 +1946,13 @@
                         } else {
                             // Clear out the HWC layer if this layer was
                             // previously visible, but no longer is
-                            hwcLayerDestroyed = layer->destroyHwcLayer(
-                                    displayDevice->getHwcDisplayId());
+                            hwcLayerDestroyed = layer->destroyHwcLayer(display->getId());
                         }
                     } else {
-                        // WM changes displayDevice->layerStack upon sleep/awake.
+                        // WM changes display->layerStack upon sleep/awake.
                         // Here we make sure we delete the HWC layers even if
                         // WM changed their layer stack.
-                        hwcLayerDestroyed = layer->destroyHwcLayer(
-                                displayDevice->getHwcDisplayId());
+                        hwcLayerDestroyed = layer->destroyHwcLayer(display->getId());
                     }
 
                     // If a layer is not going to get a release fence because
@@ -1947,12 +1968,11 @@
                     }
                 });
             }
-            displayDevice->setVisibleLayersSortedByZ(layersSortedByZ);
-            displayDevice->setLayersNeedingFences(layersNeedingFences);
-            displayDevice->undefinedRegion.set(bounds);
-            displayDevice->undefinedRegion.subtractSelf(
-                    tr.transform(opaqueRegion));
-            displayDevice->dirtyRegion.orSelf(dirtyRegion);
+            display->setVisibleLayersSortedByZ(layersSortedByZ);
+            display->setLayersNeedingFences(layersNeedingFences);
+            display->undefinedRegion.set(bounds);
+            display->undefinedRegion.subtractSelf(tr.transform(opaqueRegion));
+            display->dirtyRegion.orSelf(dirtyRegion);
         }
     }
 }
@@ -1965,12 +1985,12 @@
 //  - Dataspace::UNKNOWN
 //  - Dataspace::BT2020_HLG
 //  - Dataspace::BT2020_PQ
-Dataspace SurfaceFlinger::getBestDataspace(
-    const sp<const DisplayDevice>& displayDevice, Dataspace* outHdrDataSpace) const {
+Dataspace SurfaceFlinger::getBestDataspace(const sp<const DisplayDevice>& display,
+                                           Dataspace* outHdrDataSpace) const {
     Dataspace bestDataSpace = Dataspace::SRGB;
     *outHdrDataSpace = Dataspace::UNKNOWN;
 
-    for (const auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
+    for (const auto& layer : display->getVisibleLayersSortedByZ()) {
         switch (layer->getDataSpace()) {
             case Dataspace::V0_SCRGB:
             case Dataspace::V0_SCRGB_LINEAR:
@@ -1998,9 +2018,8 @@
 }
 
 // Pick the ColorMode / Dataspace for the display device.
-void SurfaceFlinger::pickColorMode(const sp<DisplayDevice>& displayDevice,
-                                   ColorMode* outMode, Dataspace* outDataSpace,
-                                   RenderIntent* outRenderIntent) const {
+void SurfaceFlinger::pickColorMode(const sp<DisplayDevice>& display, ColorMode* outMode,
+                                   Dataspace* outDataSpace, RenderIntent* outRenderIntent) const {
     if (mDisplayColorSetting == DisplayColorSetting::UNMANAGED) {
         *outMode = ColorMode::NATIVE;
         *outDataSpace = Dataspace::UNKNOWN;
@@ -2009,11 +2028,11 @@
     }
 
     Dataspace hdrDataSpace;
-    Dataspace bestDataSpace = getBestDataspace(displayDevice, &hdrDataSpace);
+    Dataspace bestDataSpace = getBestDataspace(display, &hdrDataSpace);
 
     // respect hdrDataSpace only when there is no legacy HDR support
     const bool isHdr = hdrDataSpace != Dataspace::UNKNOWN &&
-        !displayDevice->hasLegacyHdrSupport(hdrDataSpace);
+        !display->hasLegacyHdrSupport(hdrDataSpace);
     if (isHdr) {
         bestDataSpace = hdrDataSpace;
     }
@@ -2032,177 +2051,261 @@
             break;
     }
 
-    displayDevice->getBestColorMode(bestDataSpace, intent, outDataSpace, outMode, outRenderIntent);
+    display->getBestColorMode(bestDataSpace, intent, outDataSpace, outMode, outRenderIntent);
 }
 
-void SurfaceFlinger::setUpHWComposer() {
+void SurfaceFlinger::configureSidebandComposition(const CompositionInfo& compositionInfo) const
+{
+    HWC2::Error error;
+    LOG_ALWAYS_FATAL_IF(compositionInfo.hwc.sidebandStream == nullptr,
+                        "CompositionType is sideband, but sideband stream is nullptr");
+    error = (compositionInfo.hwc.hwcLayer)
+                    ->setSidebandStream(compositionInfo.hwc.sidebandStream->handle());
+    if (error != HWC2::Error::None) {
+        ALOGE("[SF] Failed to set sideband stream %p: %s (%d)",
+                compositionInfo.hwc.sidebandStream->handle(), to_string(error).c_str(),
+                static_cast<int32_t>(error));
+    }
+}
+
+void SurfaceFlinger::configureHwcCommonData(const CompositionInfo& compositionInfo) const
+{
+    HWC2::Error error;
+
+    if (!compositionInfo.hwc.skipGeometry) {
+        error = (compositionInfo.hwc.hwcLayer)->setBlendMode(compositionInfo.hwc.blendMode);
+        ALOGE_IF(error != HWC2::Error::None,
+                 "[SF] Failed to set blend mode %s:"
+                 " %s (%d)",
+                 to_string(compositionInfo.hwc.blendMode).c_str(), to_string(error).c_str(),
+                 static_cast<int32_t>(error));
+
+        error = (compositionInfo.hwc.hwcLayer)->setDisplayFrame(compositionInfo.hwc.displayFrame);
+        ALOGE_IF(error != HWC2::Error::None,
+                "[SF] Failed to set the display frame [%d, %d, %d, %d] %s (%d)",
+                compositionInfo.hwc.displayFrame.left,
+                compositionInfo.hwc.displayFrame.right,
+                compositionInfo.hwc.displayFrame.top,
+                compositionInfo.hwc.displayFrame.bottom,
+                to_string(error).c_str(), static_cast<int32_t>(error));
+
+        error = (compositionInfo.hwc.hwcLayer)->setSourceCrop(compositionInfo.hwc.sourceCrop);
+        ALOGE_IF(error != HWC2::Error::None,
+                "[SF] Failed to set source crop [%.3f, %.3f, %.3f, %.3f]: %s (%d)",
+                compositionInfo.hwc.sourceCrop.left,
+                compositionInfo.hwc.sourceCrop.right,
+                compositionInfo.hwc.sourceCrop.top,
+                compositionInfo.hwc.sourceCrop.bottom,
+                to_string(error).c_str(), static_cast<int32_t>(error));
+
+        error = (compositionInfo.hwc.hwcLayer)->setPlaneAlpha(compositionInfo.hwc.alpha);
+        ALOGE_IF(error != HWC2::Error::None,
+                 "[SF] Failed to set plane alpha %.3f: "
+                 "%s (%d)",
+                 compositionInfo.hwc.alpha,
+                 to_string(error).c_str(), static_cast<int32_t>(error));
+
+
+        error = (compositionInfo.hwc.hwcLayer)->setZOrder(compositionInfo.hwc.z);
+        ALOGE_IF(error != HWC2::Error::None,
+                "[SF] Failed to set Z %u: %s (%d)",
+                compositionInfo.hwc.z,
+                to_string(error).c_str(), static_cast<int32_t>(error));
+
+        error = (compositionInfo.hwc.hwcLayer)
+                        ->setInfo(compositionInfo.hwc.type, compositionInfo.hwc.appId);
+        ALOGE_IF(error != HWC2::Error::None,
+                "[SF] Failed to set info (%d)",
+                static_cast<int32_t>(error));
+
+        error = (compositionInfo.hwc.hwcLayer)->setTransform(compositionInfo.hwc.transform);
+        ALOGE_IF(error != HWC2::Error::None,
+                 "[SF] Failed to set transform %s: "
+                 "%s (%d)",
+                 to_string(compositionInfo.hwc.transform).c_str(), to_string(error).c_str(),
+                 static_cast<int32_t>(error));
+    }
+
+    error = (compositionInfo.hwc.hwcLayer)->setCompositionType(compositionInfo.compositionType);
+    ALOGE_IF(error != HWC2::Error::None,
+            "[SF] Failed to set composition type: %s (%d)",
+                to_string(error).c_str(), static_cast<int32_t>(error));
+
+    error = (compositionInfo.hwc.hwcLayer)->setDataspace(compositionInfo.hwc.dataspace);
+    ALOGE_IF(error != HWC2::Error::None,
+            "[SF] Failed to set dataspace: %s (%d)",
+            to_string(error).c_str(), static_cast<int32_t>(error));
+
+    error = (compositionInfo.hwc.hwcLayer)->setPerFrameMetadata(
+            compositionInfo.hwc.supportedPerFrameMetadata, compositionInfo.hwc.hdrMetadata);
+    ALOGE_IF(error != HWC2::Error::None && error != HWC2::Error::Unsupported,
+            "[SF] Failed to set hdrMetadata: %s (%d)",
+            to_string(error).c_str(), static_cast<int32_t>(error));
+
+    if (compositionInfo.compositionType == HWC2::Composition::SolidColor) {
+        error = (compositionInfo.hwc.hwcLayer)->setColor(compositionInfo.hwc.color);
+        ALOGE_IF(error != HWC2::Error::None,
+                "[SF] Failed to set color: %s (%d)",
+                to_string(error).c_str(), static_cast<int32_t>(error));
+    }
+
+    error = (compositionInfo.hwc.hwcLayer)->setVisibleRegion(compositionInfo.hwc.visibleRegion);
+    ALOGE_IF(error != HWC2::Error::None,
+            "[SF] Failed to set visible region: %s (%d)",
+            to_string(error).c_str(), static_cast<int32_t>(error));
+
+    error = (compositionInfo.hwc.hwcLayer)->setSurfaceDamage(compositionInfo.hwc.surfaceDamage);
+    ALOGE_IF(error != HWC2::Error::None,
+            "[SF] Failed to set surface damage: %s (%d)",
+            to_string(error).c_str(), static_cast<int32_t>(error));
+
+    error = (compositionInfo.hwc.hwcLayer)->setColorTransform(compositionInfo.hwc.colorTransform);
+}
+
+void SurfaceFlinger::configureDeviceComposition(const CompositionInfo& compositionInfo) const
+{
+    HWC2::Error error;
+
+    if (compositionInfo.hwc.fence) {
+        error = (compositionInfo.hwc.hwcLayer)->setBuffer(compositionInfo.mBufferSlot,
+                compositionInfo.mBuffer, compositionInfo.hwc.fence);
+        ALOGE_IF(error != HWC2::Error::None,
+                "[SF] Failed to set buffer: %s (%d)",
+                to_string(error).c_str(), static_cast<int32_t>(error));
+    }
+}
+
+void SurfaceFlinger::beginFrame(const sp<DisplayDevice>& display)
+{
+    bool dirty = !display->getDirtyRegion(false).isEmpty();
+    bool empty = display->getVisibleLayersSortedByZ().size() == 0;
+    bool wasEmpty = !display->lastCompositionHadVisibleLayers;
+
+    // If nothing has changed (!dirty), don't recompose.
+    // If something changed, but we don't currently have any visible layers,
+    //   and didn't when we last did a composition, then skip it this time.
+    // The second rule does two things:
+    // - When all layers are removed from a display, we'll emit one black
+    //   frame, then nothing more until we get new layers.
+    // - When a display is created with a private layer stack, we won't
+    //   emit any black frames until a layer is added to the layer stack.
+    bool mustRecompose = dirty && !(empty && wasEmpty);
+
+    ALOGV_IF(display->getDisplayType() == DisplayDevice::DISPLAY_VIRTUAL,
+            "id[%d]: %s composition (%sdirty %sempty %swasEmpty)", display->getId(),
+            mustRecompose ? "doing" : "skipping",
+            dirty ? "+" : "-",
+            empty ? "+" : "-",
+            wasEmpty ? "+" : "-");
+
+    display->beginFrame(mustRecompose);
+
+    if (mustRecompose) {
+        display->lastCompositionHadVisibleLayers = !empty;
+    }
+}
+
+void SurfaceFlinger::prepareFrame(const sp<DisplayDevice>& display)
+{
+    const auto displayId = display->getId();
+    if (!display->isPoweredOn()) {
+        return;
+    }
+
+    status_t result = display->prepareFrame(
+            *getBE().mHwc, getBE().mCompositionInfo[displayId]);
+    ALOGE_IF(result != NO_ERROR,
+             "prepareFrame for display %d failed:"
+             " %d (%s)",
+             display->getId(), result, strerror(-result));
+}
+
+void SurfaceFlinger::setUpHWComposer(const CompositionInfo& compositionInfo) {
     ATRACE_CALL();
     ALOGV("setUpHWComposer");
 
-    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-        bool dirty = !mDisplays[dpy]->getDirtyRegion(mRepaintEverything).isEmpty();
-        bool empty = mDisplays[dpy]->getVisibleLayersSortedByZ().size() == 0;
-        bool wasEmpty = !mDisplays[dpy]->lastCompositionHadVisibleLayers;
+    switch (compositionInfo.compositionType)
+    {
+        case HWC2::Composition::Invalid:
+            break;
 
-        // If nothing has changed (!dirty), don't recompose.
-        // If something changed, but we don't currently have any visible layers,
-        //   and didn't when we last did a composition, then skip it this time.
-        // The second rule does two things:
-        // - When all layers are removed from a display, we'll emit one black
-        //   frame, then nothing more until we get new layers.
-        // - When a display is created with a private layer stack, we won't
-        //   emit any black frames until a layer is added to the layer stack.
-        bool mustRecompose = dirty && !(empty && wasEmpty);
-
-        ALOGV_IF(mDisplays[dpy]->getDisplayType() == DisplayDevice::DISPLAY_VIRTUAL,
-                "dpy[%zu]: %s composition (%sdirty %sempty %swasEmpty)", dpy,
-                mustRecompose ? "doing" : "skipping",
-                dirty ? "+" : "-",
-                empty ? "+" : "-",
-                wasEmpty ? "+" : "-");
-
-        mDisplays[dpy]->beginFrame(mustRecompose);
-
-        if (mustRecompose) {
-            mDisplays[dpy]->lastCompositionHadVisibleLayers = !empty;
-        }
-    }
-
-    // build the h/w work list
-    if (CC_UNLIKELY(mGeometryInvalid)) {
-        mGeometryInvalid = false;
-        for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-            sp<const DisplayDevice> displayDevice(mDisplays[dpy]);
-            const auto hwcId = displayDevice->getHwcDisplayId();
-            if (hwcId >= 0) {
-                const Vector<sp<Layer>>& currentLayers(
-                        displayDevice->getVisibleLayersSortedByZ());
-                for (size_t i = 0; i < currentLayers.size(); i++) {
-                    const auto& layer = currentLayers[i];
-                    if (!layer->hasHwcLayer(hwcId)) {
-                        if (!layer->createHwcLayer(getBE().mHwc.get(), hwcId)) {
-                            layer->forceClientComposition(hwcId);
-                            continue;
-                        }
-                    }
-
-                    layer->setGeometry(displayDevice, i);
-                    if (mDebugDisableHWC || mDebugRegion) {
-                        layer->forceClientComposition(hwcId);
-                    }
-                }
+        case HWC2::Composition::Client:
+            if (compositionInfo.hwc.hwcLayer) {
+                auto error = (compositionInfo.hwc.hwcLayer)->
+                    setCompositionType(compositionInfo.compositionType);
+                ALOGE_IF(error != HWC2::Error::None,
+                        "[SF] Failed to set composition type: %s (%d)",
+                            to_string(error).c_str(), static_cast<int32_t>(error));
             }
-        }
-    }
+            break;
 
-    // Set the per-frame data
-    for (size_t displayId = 0; displayId < mDisplays.size(); ++displayId) {
-        auto& displayDevice = mDisplays[displayId];
-        const auto hwcId = displayDevice->getHwcDisplayId();
+        case HWC2::Composition::Sideband:
+            configureHwcCommonData(compositionInfo);
+            configureSidebandComposition(compositionInfo);
+            break;
 
-        if (hwcId < 0) {
-            continue;
-        }
-        if (mDrawingState.colorMatrixChanged) {
-            displayDevice->setColorTransform(mDrawingState.colorMatrix);
-            status_t result = getBE().mHwc->setColorTransform(hwcId, mDrawingState.colorMatrix);
-            ALOGE_IF(result != NO_ERROR, "Failed to set color transform on "
-                    "display %zd: %d", displayId, result);
-        }
-        for (auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
-            if (layer->isHdrY410()) {
-                layer->forceClientComposition(hwcId);
-            } else if ((layer->getDataSpace() == Dataspace::BT2020_PQ ||
-                        layer->getDataSpace() == Dataspace::BT2020_ITU_PQ) &&
-                    !displayDevice->hasHDR10Support()) {
-                layer->forceClientComposition(hwcId);
-            } else if ((layer->getDataSpace() == Dataspace::BT2020_HLG ||
-                        layer->getDataSpace() == Dataspace::BT2020_ITU_HLG) &&
-                    !displayDevice->hasHLGSupport()) {
-                layer->forceClientComposition(hwcId);
-            }
+        case HWC2::Composition::SolidColor:
+            configureHwcCommonData(compositionInfo);
+            break;
 
-            if (layer->getForceClientComposition(hwcId)) {
-                ALOGV("[%s] Requesting Client composition", layer->getName().string());
-                layer->setCompositionType(hwcId, HWC2::Composition::Client);
-                continue;
-            }
-
-            layer->setPerFrameData(displayDevice);
-        }
-
-        if (hasWideColorDisplay) {
-            ColorMode colorMode;
-            Dataspace dataSpace;
-            RenderIntent renderIntent;
-            pickColorMode(displayDevice, &colorMode, &dataSpace, &renderIntent);
-            setActiveColorModeInternal(displayDevice, colorMode, dataSpace, renderIntent);
-        }
-    }
-
-    mDrawingState.colorMatrixChanged = false;
-
-    for (size_t displayId = 0; displayId < mDisplays.size(); ++displayId) {
-        auto& displayDevice = mDisplays[displayId];
-        if (!displayDevice->isDisplayOn()) {
-            continue;
-        }
-
-        status_t result = displayDevice->prepareFrame(*getBE().mHwc);
-        ALOGE_IF(result != NO_ERROR, "prepareFrame for display %zd failed:"
-                " %d (%s)", displayId, result, strerror(-result));
+        case HWC2::Composition::Device:
+        case HWC2::Composition::Cursor:
+            configureHwcCommonData(compositionInfo);
+            configureDeviceComposition(compositionInfo);
+            break;
     }
 }
 
-void SurfaceFlinger::doComposition() {
+void SurfaceFlinger::doComposition(const sp<DisplayDevice>& display, bool repaintEverything) {
     ATRACE_CALL();
     ALOGV("doComposition");
 
-    const bool repaintEverything = android_atomic_and(0, &mRepaintEverything);
-    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-        const sp<DisplayDevice>& hw(mDisplays[dpy]);
-        if (hw->isDisplayOn()) {
-            // transform the dirty region into this screen's coordinate space
-            const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
+    if (display->isPoweredOn()) {
+        // transform the dirty region into this screen's coordinate space
+        const Region dirtyRegion(display->getDirtyRegion(repaintEverything));
 
-            // repaint the framebuffer (if needed)
-            doDisplayComposition(hw, dirtyRegion);
+        // repaint the framebuffer (if needed)
+        doDisplayComposition(display, dirtyRegion);
 
-            hw->dirtyRegion.clear();
-            hw->flip();
-        }
+        display->dirtyRegion.clear();
+        display->flip();
     }
-    postFramebuffer();
+    postFramebuffer(display);
 }
 
-void SurfaceFlinger::postFramebuffer()
+void SurfaceFlinger::postFrame()
+{
+    // |mStateLock| not needed as we are on the main thread
+    if (getBE().mHwc->isConnected(HWC_DISPLAY_PRIMARY)) {
+        uint32_t flipCount = getDefaultDisplayDeviceLocked()->getPageFlipCount();
+        if (flipCount % LOG_FRAME_STATS_PERIOD == 0) {
+            logFrameStats();
+        }
+    }
+}
+
+void SurfaceFlinger::postFramebuffer(const sp<DisplayDevice>& display)
 {
     ATRACE_CALL();
     ALOGV("postFramebuffer");
 
-    const nsecs_t now = systemTime();
-    mDebugInSwapBuffers = now;
+    mPostFramebufferTime = systemTime();
 
-    for (size_t displayId = 0; displayId < mDisplays.size(); ++displayId) {
-        auto& displayDevice = mDisplays[displayId];
-        if (!displayDevice->isDisplayOn()) {
-            continue;
+    if (display->isPoweredOn()) {
+        const auto displayId = display->getId();
+        if (displayId >= 0) {
+            getBE().mHwc->presentAndGetReleaseFences(displayId);
         }
-        const auto hwcId = displayDevice->getHwcDisplayId();
-        if (hwcId >= 0) {
-            getBE().mHwc->presentAndGetReleaseFences(hwcId);
-        }
-        displayDevice->onSwapBuffersCompleted();
-        displayDevice->makeCurrent();
-        for (auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
+        display->onSwapBuffersCompleted();
+        display->makeCurrent();
+        for (auto& compositionInfo : getBE().mCompositionInfo[displayId]) {
             sp<Fence> releaseFence = Fence::NO_FENCE;
-
             // The layer buffer from the previous frame (if any) is released
             // by HWC only when the release fence from this frame (if any) is
             // signaled.  Always get the release fence from HWC first.
-            auto hwcLayer = layer->getHwcLayer(hwcId);
-            if (hwcId >= 0) {
-                releaseFence = getBE().mHwc->getLayerReleaseFence(hwcId, hwcLayer);
+            auto hwcLayer = compositionInfo.hwc.hwcLayer;
+            if ((displayId >= 0) && hwcLayer) {
+                releaseFence = getBE().mHwc->getLayerReleaseFence(displayId, hwcLayer.get());
             }
 
             // If the layer was client composited in the previous frame, we
@@ -2210,37 +2313,28 @@
             // Since we do not track that, always merge with the current
             // client target acquire fence when it is available, even though
             // this is suboptimal.
-            if (layer->getCompositionType(hwcId) == HWC2::Composition::Client) {
+            if (compositionInfo.compositionType == HWC2::Composition::Client) {
                 releaseFence = Fence::merge("LayerRelease", releaseFence,
-                        displayDevice->getClientTargetAcquireFence());
+                                            display->getClientTargetAcquireFence());
             }
 
-            layer->onLayerDisplayed(releaseFence);
+            if (compositionInfo.layer) {
+                compositionInfo.layer->onLayerDisplayed(releaseFence);
+            }
         }
 
         // We've got a list of layers needing fences, that are disjoint with
-        // displayDevice->getVisibleLayersSortedByZ.  The best we can do is to
+        // display->getVisibleLayersSortedByZ.  The best we can do is to
         // supply them with the present fence.
-        if (!displayDevice->getLayersNeedingFences().isEmpty()) {
-            sp<Fence> presentFence = getBE().mHwc->getPresentFence(hwcId);
-            for (auto& layer : displayDevice->getLayersNeedingFences()) {
-                layer->onLayerDisplayed(presentFence);
+        if (!display->getLayersNeedingFences().isEmpty()) {
+            sp<Fence> presentFence = getBE().mHwc->getPresentFence(displayId);
+            for (auto& layer : display->getLayersNeedingFences()) {
+                layer->getBE().onLayerDisplayed(presentFence);
             }
         }
 
-        if (hwcId >= 0) {
-            getBE().mHwc->clearReleaseFences(hwcId);
-        }
-    }
-
-    mLastSwapBufferTime = systemTime() - now;
-    mDebugInSwapBuffers = 0;
-
-    // |mStateLock| not needed as we are on the main thread
-    if (getBE().mHwc->isConnected(HWC_DISPLAY_PRIMARY)) {
-        uint32_t flipCount = getDefaultDisplayDeviceLocked()->getPageFlipCount();
-        if (flipCount % LOG_FRAME_STATS_PERIOD == 0) {
-            logFrameStats();
+        if (displayId >= 0) {
+            getBE().mHwc->clearReleaseFences(displayId);
         }
     }
 }
@@ -2275,7 +2369,7 @@
     // here the transaction has been committed
 }
 
-DisplayDevice::DisplayType SurfaceFlinger::determineDisplayType(hwc2_display_t display,
+DisplayDevice::DisplayType SurfaceFlinger::determineDisplayType(hwc2_display_t hwcDisplayId,
                                                                 HWC2::Connection connection) const {
     // Figure out whether the event is for the primary display or an
     // external display by matching the Hwc display id against one for a
@@ -2284,17 +2378,16 @@
     // have a connected primary display, we assume the new display is meant to
     // be the primary display, and then if we don't have an external display,
     // we assume it is that.
-    const auto primaryDisplayId =
-            getBE().mHwc->getHwcDisplayId(DisplayDevice::DISPLAY_PRIMARY);
-    const auto externalDisplayId =
+    const auto primaryHwcDisplayId = getBE().mHwc->getHwcDisplayId(DisplayDevice::DISPLAY_PRIMARY);
+    const auto externalHwcDisplayId =
             getBE().mHwc->getHwcDisplayId(DisplayDevice::DISPLAY_EXTERNAL);
-    if (primaryDisplayId && primaryDisplayId == display) {
+    if (primaryHwcDisplayId && primaryHwcDisplayId == hwcDisplayId) {
         return DisplayDevice::DISPLAY_PRIMARY;
-    } else if (externalDisplayId && externalDisplayId == display) {
-        return  DisplayDevice::DISPLAY_EXTERNAL;
-    } else if (connection == HWC2::Connection::Connected && !primaryDisplayId) {
+    } else if (externalHwcDisplayId && externalHwcDisplayId == hwcDisplayId) {
+        return DisplayDevice::DISPLAY_EXTERNAL;
+    } else if (connection == HWC2::Connection::Connected && !primaryHwcDisplayId) {
         return DisplayDevice::DISPLAY_PRIMARY;
-    } else if (connection == HWC2::Connection::Connected && !externalDisplayId) {
+    } else if (connection == HWC2::Connection::Connected && !externalHwcDisplayId) {
         return DisplayDevice::DISPLAY_EXTERNAL;
     }
 
@@ -2303,9 +2396,9 @@
 
 void SurfaceFlinger::processDisplayHotplugEventsLocked() {
     for (const auto& event : mPendingHotplugEvents) {
-        auto displayType = determineDisplayType(event.display, event.connection);
+        auto displayType = determineDisplayType(event.hwcDisplayId, event.connection);
         if (displayType == DisplayDevice::DISPLAY_ID_INVALID) {
-            ALOGW("Unable to determine the display type for display %" PRIu64, event.display);
+            ALOGW("Unable to determine the display type for display %" PRIu64, event.hwcDisplayId);
             continue;
         }
 
@@ -2314,29 +2407,34 @@
             continue;
         }
 
-        getBE().mHwc->onHotplug(event.display, displayType, event.connection);
+        const auto displayId =
+                getBE().mHwc->onHotplug(event.hwcDisplayId, displayType, event.connection);
+        if (displayId) {
+            ALOGV("Display %" PRIu64 " has stable ID %" PRIu64, event.hwcDisplayId, *displayId);
+        }
 
         if (event.connection == HWC2::Connection::Connected) {
-            if (!mBuiltinDisplays[displayType].get()) {
+            if (!mDisplayTokens[displayType].get()) {
                 ALOGV("Creating built in display %d", displayType);
-                mBuiltinDisplays[displayType] = new BBinder();
-                // All non-virtual displays are currently considered secure.
-                DisplayDeviceState info(displayType, true);
+                mDisplayTokens[displayType] = new BBinder();
+                DisplayDeviceState info;
+                info.type = displayType;
                 info.displayName = displayType == DisplayDevice::DISPLAY_PRIMARY ?
                         "Built-in Screen" : "External Screen";
-                mCurrentState.displays.add(mBuiltinDisplays[displayType], info);
+                info.isSecure = true; // All physical displays are currently considered secure.
+                mCurrentState.displays.add(mDisplayTokens[displayType], info);
                 mInterceptor->saveDisplayCreation(info);
             }
         } else {
             ALOGV("Removing built in display %d", displayType);
 
-            ssize_t idx = mCurrentState.displays.indexOfKey(mBuiltinDisplays[displayType]);
+            ssize_t idx = mCurrentState.displays.indexOfKey(mDisplayTokens[displayType]);
             if (idx >= 0) {
                 const DisplayDeviceState& info(mCurrentState.displays.valueAt(idx));
-                mInterceptor->saveDisplayDeletion(info.displayId);
+                mInterceptor->saveDisplayDeletion(info.sequenceId);
                 mCurrentState.displays.removeItemsAt(idx);
             }
-            mBuiltinDisplays[displayType].clear();
+            mDisplayTokens[displayType].clear();
         }
 
         processDisplayChangesLocked();
@@ -2346,49 +2444,47 @@
 }
 
 sp<DisplayDevice> SurfaceFlinger::setupNewDisplayDeviceInternal(
-        const wp<IBinder>& display, int hwcId, const DisplayDeviceState& state,
+        const wp<IBinder>& displayToken, int32_t displayId, const DisplayDeviceState& state,
         const sp<DisplaySurface>& dispSurface, const sp<IGraphicBufferProducer>& producer) {
-    bool hasWideColorGamut = false;
-    std::unordered_map<ColorMode, std::vector<RenderIntent>> hwcColorModes;
-    HdrCapabilities hdrCapabilities;
-    int32_t supportedPerFrameMetadata = 0;
+    DisplayDeviceCreationArgs creationArgs(this, displayToken, state.type, displayId);
+    creationArgs.isSecure = state.isSecure;
+    creationArgs.displaySurface = dispSurface;
+    creationArgs.hasWideColorGamut = false;
+    creationArgs.supportedPerFrameMetadata = 0;
 
-    if (hasWideColorDisplay && hwcId >= 0) {
-        std::vector<ColorMode> modes = getHwComposer().getColorModes(hwcId);
+    if (useColorManagement && displayId >= 0) {
+        std::vector<ColorMode> modes = getHwComposer().getColorModes(displayId);
         for (ColorMode colorMode : modes) {
-            switch (colorMode) {
-                case ColorMode::DISPLAY_P3:
-                case ColorMode::ADOBE_RGB:
-                case ColorMode::DCI_P3:
-                    hasWideColorGamut = true;
-                    break;
-                default:
-                    break;
+            if (isWideColorMode(colorMode)) {
+                creationArgs.hasWideColorGamut = true;
             }
 
-            std::vector<RenderIntent> renderIntents = getHwComposer().getRenderIntents(hwcId,
-                                                                                       colorMode);
-            hwcColorModes.emplace(colorMode, renderIntents);
+            std::vector<RenderIntent> renderIntents =
+                    getHwComposer().getRenderIntents(displayId, colorMode);
+            creationArgs.hwcColorModes.emplace(colorMode, renderIntents);
         }
     }
 
-    if (hwcId >= 0) {
-        getHwComposer().getHdrCapabilities(hwcId, &hdrCapabilities);
-        supportedPerFrameMetadata = getHwComposer().getSupportedPerFrameMetadata(hwcId);
+    if (displayId >= 0) {
+        getHwComposer().getHdrCapabilities(displayId, &creationArgs.hdrCapabilities);
+        creationArgs.supportedPerFrameMetadata =
+                getHwComposer().getSupportedPerFrameMetadata(displayId);
     }
 
     auto nativeWindowSurface = mCreateNativeWindowSurface(producer);
     auto nativeWindow = nativeWindowSurface->getNativeWindow();
+    creationArgs.nativeWindow = nativeWindow;
 
     /*
      * Create our display's surface
      */
-    std::unique_ptr<RE::Surface> renderSurface = getRenderEngine().createSurface();
+    std::unique_ptr<renderengine::Surface> renderSurface = getRenderEngine().createSurface();
     renderSurface->setCritical(state.type == DisplayDevice::DISPLAY_PRIMARY);
-    renderSurface->setAsync(state.type >= DisplayDevice::DISPLAY_VIRTUAL);
+    renderSurface->setAsync(state.isVirtual());
     renderSurface->setNativeWindow(nativeWindow.get());
-    const int displayWidth = renderSurface->queryWidth();
-    const int displayHeight = renderSurface->queryHeight();
+    creationArgs.displayWidth = renderSurface->getWidth();
+    creationArgs.displayHeight = renderSurface->getHeight();
+    creationArgs.renderSurface = std::move(renderSurface);
 
     // Make sure that composition can never be stalled by a virtual display
     // consumer that isn't processing buffers fast enough. We have to do this
@@ -2397,19 +2493,18 @@
     // * In makeCurrent(), using eglSwapInterval. Some EGL drivers set the
     //   window's swap interval in eglMakeCurrent, so they'll override the
     //   interval we set here.
-    if (state.type >= DisplayDevice::DISPLAY_VIRTUAL) {
+    if (state.isVirtual()) {
         nativeWindow->setSwapInterval(nativeWindow.get(), 0);
     }
 
-    // virtual displays are always considered enabled
-    auto initialPowerMode = (state.type >= DisplayDevice::DISPLAY_VIRTUAL) ? HWC_POWER_MODE_NORMAL
-                                                                           : HWC_POWER_MODE_OFF;
+    creationArgs.displayInstallOrientation = state.type == DisplayDevice::DISPLAY_PRIMARY
+            ? primaryDisplayOrientation
+            : DisplayState::eOrientationDefault;
 
-    sp<DisplayDevice> hw =
-            new DisplayDevice(this, state.type, hwcId, state.isSecure, display, nativeWindow,
-                              dispSurface, std::move(renderSurface), displayWidth, displayHeight,
-                              hasWideColorGamut, hdrCapabilities,
-                              supportedPerFrameMetadata, hwcColorModes, initialPowerMode);
+    // virtual displays are always considered enabled
+    creationArgs.initialPowerMode = state.isVirtual() ? HWC_POWER_MODE_NORMAL : HWC_POWER_MODE_OFF;
+
+    sp<DisplayDevice> display = new DisplayDevice(std::move(creationArgs));
 
     if (maxFrameBufferAcquiredBuffers >= 3) {
         nativeWindowSurface->preallocateBuffers();
@@ -2417,20 +2512,20 @@
 
     ColorMode defaultColorMode = ColorMode::NATIVE;
     Dataspace defaultDataSpace = Dataspace::UNKNOWN;
-    if (hasWideColorGamut) {
+    if (display->hasWideColorGamut()) {
         defaultColorMode = ColorMode::SRGB;
         defaultDataSpace = Dataspace::SRGB;
     }
-    setActiveColorModeInternal(hw, defaultColorMode, defaultDataSpace,
+    setActiveColorModeInternal(display, defaultColorMode, defaultDataSpace,
                                RenderIntent::COLORIMETRIC);
     if (state.type < DisplayDevice::DISPLAY_VIRTUAL) {
-        hw->setActiveConfig(getHwComposer().getActiveConfigIndex(state.type));
+        display->setActiveConfig(getHwComposer().getActiveConfigIndex(state.type));
     }
-    hw->setLayerStack(state.layerStack);
-    hw->setProjection(state.orientation, state.viewport, state.frame);
-    hw->setDisplayName(state.displayName);
+    display->setLayerStack(state.layerStack);
+    display->setProjection(state.orientation, state.viewport, state.frame);
+    display->setDisplayName(state.displayName);
 
-    return hw;
+    return display;
 }
 
 void SurfaceFlinger::processDisplayChangesLocked() {
@@ -2455,17 +2550,32 @@
                 // Call makeCurrent() on the primary display so we can
                 // be sure that nothing associated with this display
                 // is current.
-                const sp<const DisplayDevice> defaultDisplay(getDefaultDisplayDeviceLocked());
-                if (defaultDisplay != nullptr) defaultDisplay->makeCurrent();
-                sp<DisplayDevice> hw(getDisplayDeviceLocked(draw.keyAt(i)));
-                if (hw != nullptr) hw->disconnect(getHwComposer());
-                if (draw[i].type < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES)
-                    mEventThread->onHotplugReceived(draw[i].type, false);
-                mDisplays.removeItem(draw.keyAt(i));
+                if (const auto defaultDisplay = getDefaultDisplayDeviceLocked()) {
+                    defaultDisplay->makeCurrent();
+                }
+                if (const auto display = getDisplayDeviceLocked(draw.keyAt(i))) {
+                    display->disconnect(getHwComposer());
+                }
+                if (draw[i].type == DisplayDevice::DISPLAY_PRIMARY) {
+                    if (mUseScheduler) {
+                        mScheduler->hotplugReceived(mAppConnectionHandle,
+                                                    EventThread::DisplayType::Primary, false);
+                    } else {
+                        mEventThread->onHotplugReceived(EventThread::DisplayType::Primary, false);
+                    }
+                } else if (draw[i].type == DisplayDevice::DISPLAY_EXTERNAL) {
+                    if (mUseScheduler) {
+                        mScheduler->hotplugReceived(mAppConnectionHandle,
+                                                    EventThread::DisplayType::External, false);
+                    } else {
+                        mEventThread->onHotplugReceived(EventThread::DisplayType::External, false);
+                    }
+                }
+                mDisplays.erase(draw.keyAt(i));
             } else {
                 // this display is in both lists. see if something changed.
                 const DisplayDeviceState& state(curr[j]);
-                const wp<IBinder>& display(curr.keyAt(j));
+                const wp<IBinder>& displayToken = curr.keyAt(j);
                 const sp<IBinder> state_binder = IInterface::asBinder(state.surface);
                 const sp<IBinder> draw_binder = IInterface::asBinder(draw[i].surface);
                 if (state_binder != draw_binder) {
@@ -2473,26 +2583,26 @@
                     // recreating the DisplayDevice, so we just remove it
                     // from the drawing state, so that it get re-added
                     // below.
-                    sp<DisplayDevice> hw(getDisplayDeviceLocked(display));
-                    if (hw != nullptr) hw->disconnect(getHwComposer());
-                    mDisplays.removeItem(display);
+                    if (const auto display = getDisplayDeviceLocked(displayToken)) {
+                        display->disconnect(getHwComposer());
+                    }
+                    mDisplays.erase(displayToken);
                     mDrawingState.displays.removeItemsAt(i);
                     dc--;
                     // at this point we must loop to the next item
                     continue;
                 }
 
-                const sp<DisplayDevice> disp(getDisplayDeviceLocked(display));
-                if (disp != nullptr) {
+                if (const auto display = getDisplayDeviceLocked(displayToken)) {
                     if (state.layerStack != draw[i].layerStack) {
-                        disp->setLayerStack(state.layerStack);
+                        display->setLayerStack(state.layerStack);
                     }
                     if ((state.orientation != draw[i].orientation) ||
                         (state.viewport != draw[i].viewport) || (state.frame != draw[i].frame)) {
-                        disp->setProjection(state.orientation, state.viewport, state.frame);
+                        display->setProjection(state.orientation, state.viewport, state.frame);
                     }
                     if (state.width != draw[i].width || state.height != draw[i].height) {
-                        disp->setDisplaySize(state.width, state.height);
+                        display->setDisplaySize(state.width, state.height);
                     }
                 }
             }
@@ -2511,8 +2621,8 @@
                 sp<IGraphicBufferConsumer> bqConsumer;
                 mCreateBufferQueue(&bqProducer, &bqConsumer, false);
 
-                int32_t hwcId = -1;
-                if (state.isVirtualDisplay()) {
+                int32_t displayId = -1;
+                if (state.isVirtual()) {
                     // Virtual displays without a surface are dormant:
                     // they have external state (layer stack, projection,
                     // etc.) but no internal state (i.e. a DisplayDevice).
@@ -2530,13 +2640,14 @@
                             ALOGE_IF(status != NO_ERROR, "Unable to query format (%d)", status);
                             auto format = static_cast<ui::PixelFormat>(intFormat);
 
-                            getBE().mHwc->allocateVirtualDisplay(width, height, &format, &hwcId);
+                            getBE().mHwc->allocateVirtualDisplay(width, height, &format,
+                                                                 &displayId);
                         }
 
                         // TODO: Plumb requested format back up to consumer
 
                         sp<VirtualDisplaySurface> vds =
-                                new VirtualDisplaySurface(*getBE().mHwc, hwcId, state.surface,
+                                new VirtualDisplaySurface(*getBE().mHwc, displayId, state.surface,
                                                           bqProducer, bqConsumer,
                                                           state.displayName);
 
@@ -2549,18 +2660,36 @@
                              "surface is provided (%p), ignoring it",
                              state.surface.get());
 
-                    hwcId = state.type;
-                    dispSurface = new FramebufferSurface(*getBE().mHwc, hwcId, bqConsumer);
+                    displayId = state.type;
+                    dispSurface = new FramebufferSurface(*getBE().mHwc, displayId, bqConsumer);
                     producer = bqProducer;
                 }
 
-                const wp<IBinder>& display(curr.keyAt(i));
+                const wp<IBinder>& displayToken = curr.keyAt(i);
                 if (dispSurface != nullptr) {
-                    mDisplays.add(display,
-                                  setupNewDisplayDeviceInternal(display, hwcId, state, dispSurface,
-                                                                producer));
-                    if (!state.isVirtualDisplay()) {
-                        mEventThread->onHotplugReceived(state.type, true);
+                    mDisplays.emplace(displayToken,
+                                      setupNewDisplayDeviceInternal(displayToken, displayId, state,
+                                                                    dispSurface, producer));
+                    if (!state.isVirtual()) {
+                        if (state.type == DisplayDevice::DISPLAY_PRIMARY) {
+                            if (mUseScheduler) {
+                                mScheduler->hotplugReceived(mAppConnectionHandle,
+                                                            EventThread::DisplayType::Primary,
+                                                            true);
+                            } else {
+                                mEventThread->onHotplugReceived(EventThread::DisplayType::Primary,
+                                                                true);
+                            }
+                        } else if (state.type == DisplayDevice::DISPLAY_EXTERNAL) {
+                            if (mUseScheduler) {
+                                mScheduler->hotplugReceived(mAppConnectionHandle,
+                                                            EventThread::DisplayType::External,
+                                                            true);
+                            } else {
+                                mEventThread->onHotplugReceived(EventThread::DisplayType::External,
+                                                                true);
+                            }
+                        }
                     }
                 }
             }
@@ -2622,7 +2751,7 @@
         // happened yet, so we must use the current state layer list
         // (soon to become the drawing state list).
         //
-        sp<const DisplayDevice> disp;
+        sp<const DisplayDevice> hintDisplay;
         uint32_t currentlayerStack = 0;
         bool first = true;
         mCurrentState.traverseInZOrder([&](Layer* layer) {
@@ -2635,34 +2764,33 @@
                 // figure out if this layerstack is mirrored
                 // (more than one display) if so, pick the default display,
                 // if not, pick the only display it's on.
-                disp.clear();
-                for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-                    sp<const DisplayDevice> hw(mDisplays[dpy]);
-                    if (layer->belongsToDisplay(hw->getLayerStack(), hw->isPrimary())) {
-                        if (disp == nullptr) {
-                            disp = std::move(hw);
-                        } else {
-                            disp = nullptr;
+                hintDisplay = nullptr;
+                for (const auto& [token, display] : mDisplays) {
+                    if (layer->belongsToDisplay(display->getLayerStack(), display->isPrimary())) {
+                        if (hintDisplay) {
+                            hintDisplay = nullptr;
                             break;
+                        } else {
+                            hintDisplay = display;
                         }
                     }
                 }
             }
 
-            if (disp == nullptr) {
+            if (!hintDisplay) {
                 // NOTE: TEMPORARY FIX ONLY. Real fix should cause layers to
                 // redraw after transform hint changes. See bug 8508397.
 
                 // could be null when this layer is using a layerStack
                 // that is not visible on any display. Also can occur at
                 // screen off/on times.
-                disp = getDefaultDisplayDeviceLocked();
+                hintDisplay = getDefaultDisplayDeviceLocked();
             }
 
-            // disp can be null if there is no display available at all to get
+            // could be null if there is no display available at all to get
             // the transform hint from.
-            if (disp != nullptr) {
-                layer->updateTransformHint(disp);
+            if (hintDisplay) {
+                layer->updateTransformHint(hintDisplay);
             }
 
             first = false;
@@ -2705,14 +2833,13 @@
 
 void SurfaceFlinger::updateCursorAsync()
 {
-    for (size_t displayId = 0; displayId < mDisplays.size(); ++displayId) {
-        auto& displayDevice = mDisplays[displayId];
-        if (displayDevice->getHwcDisplayId() < 0) {
+    for (const auto& [token, display] : mDisplays) {
+        if (display->getId() < 0) {
             continue;
         }
 
-        for (auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
-            layer->updateCursorPosition(displayDevice);
+        for (auto& layer : display->getVisibleLayersSortedByZ()) {
+            layer->updateCursorPosition(display);
         }
     }
 }
@@ -2725,6 +2852,7 @@
             recordBufferingStats(l->getName().string(),
                     l->getOccupancyHistory(true));
             l->onRemoved();
+            mNumLayers -= 1;
         }
         mLayersPendingRemoval.clear();
     }
@@ -2745,9 +2873,8 @@
     mTransactionCV.broadcast();
 }
 
-void SurfaceFlinger::computeVisibleRegions(const sp<const DisplayDevice>& displayDevice,
-        Region& outDirtyRegion, Region& outOpaqueRegion)
-{
+void SurfaceFlinger::computeVisibleRegions(const sp<const DisplayDevice>& display,
+                                           Region& outDirtyRegion, Region& outOpaqueRegion) {
     ATRACE_CALL();
     ALOGV("computeVisibleRegions");
 
@@ -2762,8 +2889,9 @@
         const Layer::State& s(layer->getDrawingState());
 
         // only consider the layers on the given layer stack
-        if (!layer->belongsToDisplay(displayDevice->getLayerStack(), displayDevice->isPrimary()))
+        if (!layer->belongsToDisplay(display->getLayerStack(), display->isPrimary())) {
             return;
+        }
 
         /*
          * opaqueRegion: area of a surface that is fully opaque.
@@ -2800,13 +2928,13 @@
             const bool translucent = !layer->isOpaque(s);
             Rect bounds(layer->computeScreenBounds());
             visibleRegion.set(bounds);
-            Transform tr = layer->getTransform();
+            ui::Transform tr = layer->getTransform();
             if (!visibleRegion.isEmpty()) {
                 // Remove the transparent area from the visible region
                 if (translucent) {
                     if (tr.preserveRects()) {
                         // transform the transparent region
-                        transparentRegion = tr.transform(s.activeTransparentRegion);
+                        transparentRegion = tr.transform(layer->getActiveTransparentRegion(s));
                     } else {
                         // transformation too complex, can't do the
                         // transparent region optimization.
@@ -2817,7 +2945,7 @@
                 // compute the opaque region
                 const int32_t layerOrientation = tr.getOrientation();
                 if (layer->getAlpha() == 1.0f && !translucent &&
-                        ((layerOrientation & Transform::ROT_INVALID) == false)) {
+                        ((layerOrientation & ui::Transform::ROT_INVALID) == false)) {
                     // the opaque region is the layer's footprint
                     opaqueRegion = visibleRegion;
                 }
@@ -2883,10 +3011,9 @@
 }
 
 void SurfaceFlinger::invalidateLayerStack(const sp<const Layer>& layer, const Region& dirty) {
-    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-        const sp<DisplayDevice>& hw(mDisplays[dpy]);
-        if (layer->belongsToDisplay(hw->getLayerStack(), hw->isPrimary())) {
-            hw->dirtyRegion.orSelf(dirty);
+    for (const auto& [token, display] : mDisplays) {
+        if (layer->belongsToDisplay(display->getLayerStack(), display->isPrimary())) {
+            display->dirtyRegion.orSelf(dirty);
         }
     }
 }
@@ -2911,9 +3038,9 @@
     // Display is now waiting on Layer 1's frame, which is behind layer 0's
     // second frame. But layer 0's second frame could be waiting on display.
     mDrawingState.traverseInZOrder([&](Layer* layer) {
-        if (layer->hasQueuedFrame()) {
+        if (layer->hasReadyFrame()) {
             frameQueued = true;
-            if (layer->shouldPresentNow(mPrimaryDispSync)) {
+            if (layer->shouldPresentNow(*mPrimaryDispSync)) {
                 mLayersWithQueuedFrames.push_back(layer);
             } else {
                 layer->useEmptyDamage();
@@ -2924,7 +3051,7 @@
     });
 
     for (auto& layer : mLayersWithQueuedFrames) {
-        const Region dirty(layer->latchBuffer(visibleRegions, latchTime));
+        const Region dirty(layer->latchBuffer(visibleRegions, latchTime, getBE().flushFence));
         layer->useSurfaceDamage();
         invalidateLayerStack(layer, dirty);
         if (layer->isBufferLatched()) {
@@ -2932,6 +3059,11 @@
         }
     }
 
+    // Clear the renderengine fence here...
+    // downstream code assumes that a cleared fence == NO_FENCE, so reassign to
+    // clear instead of sp::clear.
+    getBE().flushFence = Fence::NO_FENCE;
+
     mVisibleRegionsDirty |= visibleRegions;
 
     // If we will need to wake up at some time in the future to deal with a
@@ -2956,38 +3088,35 @@
     mGeometryInvalid = true;
 }
 
-
-void SurfaceFlinger::doDisplayComposition(
-        const sp<const DisplayDevice>& displayDevice,
-        const Region& inDirtyRegion)
-{
+void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& display,
+                                          const Region& inDirtyRegion) {
     // We only need to actually compose the display if:
     // 1) It is being handled by hardware composer, which may need this to
     //    keep its virtual display state machine in sync, or
     // 2) There is work to be done (the dirty region isn't empty)
-    bool isHwcDisplay = displayDevice->getHwcDisplayId() >= 0;
+    bool isHwcDisplay = display->getId() >= 0;
     if (!isHwcDisplay && inDirtyRegion.isEmpty()) {
         ALOGV("Skipping display composition");
         return;
     }
 
     ALOGV("doDisplayComposition");
-    if (!doComposeSurfaces(displayDevice)) return;
+    if (!doComposeSurfaces(display)) return;
 
     // swap buffers (presentation)
-    displayDevice->swapBuffers(getHwComposer());
+    display->swapBuffers(getHwComposer());
 }
 
-bool SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& displayDevice)
-{
+bool SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& display) {
     ALOGV("doComposeSurfaces");
 
-    const Region bounds(displayDevice->bounds());
-    const DisplayRenderArea renderArea(displayDevice);
-    const auto hwcId = displayDevice->getHwcDisplayId();
-    const bool hasClientComposition = getBE().mHwc->hasClientComposition(hwcId);
+    const Region bounds(display->bounds());
+    const DisplayRenderArea renderArea(display);
+    const auto displayId = display->getId();
+    const bool hasClientComposition = getBE().mHwc->hasClientComposition(displayId);
     ATRACE_INT("hasClientComposition", hasClientComposition);
 
+    mat4 colorMatrix;
     bool applyColorMatrix = false;
     bool needsEnhancedColorMatrix = false;
 
@@ -2995,18 +3124,18 @@
         ALOGV("hasClientComposition");
 
         Dataspace outputDataspace = Dataspace::UNKNOWN;
-        if (displayDevice->hasWideColorGamut()) {
-            outputDataspace = displayDevice->getCompositionDataSpace();
+        if (display->hasWideColorGamut()) {
+            outputDataspace = display->getCompositionDataSpace();
         }
         getBE().mRenderEngine->setOutputDataSpace(outputDataspace);
         getBE().mRenderEngine->setDisplayMaxLuminance(
-                displayDevice->getHdrCapabilities().getDesiredMaxLuminance());
+                display->getHdrCapabilities().getDesiredMaxLuminance());
 
-        const bool hasDeviceComposition = getBE().mHwc->hasDeviceComposition(hwcId);
+        const bool hasDeviceComposition = getBE().mHwc->hasDeviceComposition(displayId);
         const bool skipClientColorTransform = getBE().mHwc->hasCapability(
             HWC2::Capability::SkipClientColorTransform);
 
-        mat4 colorMatrix;
+        // Compute the global color transform matrix.
         applyColorMatrix = !hasDeviceComposition && !skipClientColorTransform;
         if (applyColorMatrix) {
             colorMatrix = mDrawingState.colorMatrix;
@@ -3016,22 +3145,21 @@
         // thus we only apply this matrix when the render intent is not colorimetric
         // and the output color space is Display P3.
         needsEnhancedColorMatrix =
-            (displayDevice->getActiveRenderIntent() >= RenderIntent::ENHANCE &&
+            (display->getActiveRenderIntent() >= RenderIntent::ENHANCE &&
              outputDataspace == Dataspace::DISPLAY_P3);
         if (needsEnhancedColorMatrix) {
             colorMatrix *= mEnhancedSaturationMatrix;
         }
 
-        getRenderEngine().setupColorTransform(colorMatrix);
-
-        if (!displayDevice->makeCurrent()) {
+        if (!display->makeCurrent()) {
             ALOGW("DisplayDevice::makeCurrent failed. Aborting surface composition for display %s",
-                  displayDevice->getDisplayName().string());
+                  display->getDisplayName().c_str());
             getRenderEngine().resetCurrentSurface();
 
             // |mStateLock| not needed as we are on the main thread
-            if(!getDefaultDisplayDeviceLocked()->makeCurrent()) {
-              ALOGE("DisplayDevice::makeCurrent on default display failed. Aborting.");
+            const auto defaultDisplay = getDefaultDisplayDeviceLocked();
+            if (!defaultDisplay || !defaultDisplay->makeCurrent()) {
+                ALOGE("DisplayDevice::makeCurrent on default display failed. Aborting.");
             }
             return false;
         }
@@ -3048,29 +3176,27 @@
             // we start with the whole screen area and remove the scissor part
             // we're left with the letterbox region
             // (common case is that letterbox ends-up being empty)
-            const Region letterbox(bounds.subtract(displayDevice->getScissor()));
+            const Region letterbox = bounds.subtract(display->getScissor());
 
             // compute the area to clear
-            Region region(displayDevice->undefinedRegion.merge(letterbox));
+            const Region region = display->undefinedRegion.merge(letterbox);
 
             // screen is already cleared here
             if (!region.isEmpty()) {
                 // can happen with SurfaceView
-                drawWormhole(displayDevice, region);
+                drawWormhole(region);
             }
         }
 
-        const Rect& bounds(displayDevice->getBounds());
-        const Rect& scissor(displayDevice->getScissor());
+        const Rect& bounds = display->getBounds();
+        const Rect& scissor = display->getScissor();
         if (scissor != bounds) {
             // scissor doesn't match the screen's dimensions, so we
             // need to clear everything outside of it and enable
             // the GL scissor so we don't draw anything where we shouldn't
 
             // enable scissor for this frame
-            const uint32_t height = displayDevice->getHeight();
-            getBE().mRenderEngine->setScissor(scissor.left, height - scissor.bottom,
-                                              scissor.getWidth(), scissor.getHeight());
+            getBE().mRenderEngine->setScissor(scissor);
         }
     }
 
@@ -3079,24 +3205,23 @@
      */
 
     ALOGV("Rendering client layers");
-    const Transform& displayTransform = displayDevice->getTransform();
+    const ui::Transform& displayTransform = display->getTransform();
     bool firstLayer = true;
-    for (auto& layer : displayDevice->getVisibleLayersSortedByZ()) {
+    for (auto& layer : display->getVisibleLayersSortedByZ()) {
         const Region clip(bounds.intersect(
                 displayTransform.transform(layer->visibleRegion)));
         ALOGV("Layer: %s", layer->getName().string());
-        ALOGV("  Composition type: %s",
-                to_string(layer->getCompositionType(hwcId)).c_str());
+        ALOGV("  Composition type: %s", to_string(layer->getCompositionType(displayId)).c_str());
         if (!clip.isEmpty()) {
-            switch (layer->getCompositionType(hwcId)) {
+            switch (layer->getCompositionType(displayId)) {
                 case HWC2::Composition::Cursor:
                 case HWC2::Composition::Device:
                 case HWC2::Composition::Sideband:
                 case HWC2::Composition::SolidColor: {
                     const Layer::State& state(layer->getDrawingState());
-                    if (layer->getClearClientTarget(hwcId) && !firstLayer &&
-                            layer->isOpaque(state) && (state.color.a == 1.0f)
-                            && hasClientComposition) {
+                    if (layer->getClearClientTarget(displayId) && !firstLayer &&
+                        layer->isOpaque(state) && (layer->getAlpha() == 1.0f) &&
+                        hasClientComposition) {
                         // never clear the very first layer since we're
                         // guaranteed the FB is already cleared
                         layer->clearWithOpenGL(renderArea);
@@ -3104,6 +3229,19 @@
                     break;
                 }
                 case HWC2::Composition::Client: {
+                    if (layer->hasColorTransform()) {
+                        mat4 tmpMatrix;
+                        if (applyColorMatrix) {
+                            tmpMatrix = mDrawingState.colorMatrix;
+                        }
+                        tmpMatrix *= layer->getColorTransform();
+                        if (needsEnhancedColorMatrix) {
+                            tmpMatrix *= mEnhancedSaturationMatrix;
+                        }
+                        getRenderEngine().setColorTransform(tmpMatrix);
+                    } else {
+                        getRenderEngine().setColorTransform(colorMatrix);
+                    }
                     layer->draw(renderArea, clip);
                     break;
                 }
@@ -3116,19 +3254,17 @@
         firstLayer = false;
     }
 
-    if (applyColorMatrix || needsEnhancedColorMatrix) {
-        getRenderEngine().setupColorTransform(mat4());
-    }
+    // Clear color transform matrix at the end of the frame.
+    getRenderEngine().setColorTransform(mat4());
 
     // disable scissor at the end of the frame
     getBE().mRenderEngine->disableScissor();
     return true;
 }
 
-void SurfaceFlinger::drawWormhole(const sp<const DisplayDevice>& displayDevice, const Region& region) const {
-    const int32_t height = displayDevice->getHeight();
+void SurfaceFlinger::drawWormhole(const Region& region) const {
     auto& engine(getRenderEngine());
-    engine.fillRegionWithColor(region, height, 0, 0, 0, 0);
+    engine.fillRegionWithColor(region, 0, 0, 0, 0);
 }
 
 status_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
@@ -3148,7 +3284,7 @@
         if (parent == nullptr) {
             mCurrentState.layersSortedByZ.add(lbc);
         } else {
-            if (parent->isPendingRemoval()) {
+            if (parent->isRemoved()) {
                 ALOGE("addClientLayer called with a removed parent");
                 return NAME_NOT_FOUND;
             }
@@ -3180,7 +3316,7 @@
 
 status_t SurfaceFlinger::removeLayerLocked(const Mutex&, const sp<Layer>& layer,
                                            bool topLevelOnly) {
-    if (layer->isPendingRemoval()) {
+    if (layer->isRemoved()) {
         return NO_ERROR;
     }
 
@@ -3190,49 +3326,24 @@
         if (topLevelOnly) {
             return NO_ERROR;
         }
-
-        sp<Layer> ancestor = p;
-        while (ancestor->getParent() != nullptr) {
-            ancestor = ancestor->getParent();
-        }
-        if (mCurrentState.layersSortedByZ.indexOf(ancestor) < 0) {
-            ALOGE("removeLayer called with a layer whose parent has been removed");
-            return NAME_NOT_FOUND;
-        }
-
         index = p->removeChild(layer);
     } else {
         index = mCurrentState.layersSortedByZ.remove(layer);
     }
 
-    // As a matter of normal operation, the LayerCleaner will produce a second
-    // attempt to remove the surface. The Layer will be kept alive in mDrawingState
-    // so we will succeed in promoting it, but it's already been removed
-    // from mCurrentState. As long as we can find it in mDrawingState we have no problem
-    // otherwise something has gone wrong and we are leaking the layer.
-    if (index < 0 && mDrawingState.layersSortedByZ.indexOf(layer) < 0) {
-        ALOGE("Failed to find layer (%s) in layer parent (%s).",
-                layer->getName().string(),
-                (p != nullptr) ? p->getName().string() : "no-parent");
-        return BAD_VALUE;
-    } else if (index < 0) {
-        return NO_ERROR;
-    }
-
     layer->onRemovedFromCurrentState();
     mLayersPendingRemoval.add(layer);
     mLayersRemoved = true;
-    mNumLayers -= 1 + layer->getChildrenCount();
     setTransactionFlags(eTransactionNeeded);
     return NO_ERROR;
 }
 
 uint32_t SurfaceFlinger::peekTransactionFlags() {
-    return android_atomic_release_load(&mTransactionFlags);
+    return mTransactionFlags;
 }
 
 uint32_t SurfaceFlinger::getTransactionFlags(uint32_t flags) {
-    return android_atomic_and(~flags, &mTransactionFlags) & flags;
+    return mTransactionFlags.fetch_and(~flags) & flags;
 }
 
 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags) {
@@ -3241,7 +3352,7 @@
 
 uint32_t SurfaceFlinger::setTransactionFlags(uint32_t flags,
         VSyncModulator::TransactionStart transactionStart) {
-    uint32_t old = android_atomic_or(flags, &mTransactionFlags);
+    uint32_t old = mTransactionFlags.fetch_or(flags);
     mVsyncModulator.setTransactionStart(transactionStart);
     if ((old & flags)==0) { // wake the server up
         signalTransaction();
@@ -3357,53 +3468,51 @@
     }
 }
 
-uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s)
-{
-    ssize_t dpyIdx = mCurrentState.displays.indexOfKey(s.token);
-    if (dpyIdx < 0)
-        return 0;
+uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s) {
+    const ssize_t index = mCurrentState.displays.indexOfKey(s.token);
+    if (index < 0) return 0;
 
     uint32_t flags = 0;
-    DisplayDeviceState& disp(mCurrentState.displays.editValueAt(dpyIdx));
-    if (disp.isValid()) {
-        const uint32_t what = s.what;
-        if (what & DisplayState::eSurfaceChanged) {
-            if (IInterface::asBinder(disp.surface) != IInterface::asBinder(s.surface)) {
-                disp.surface = s.surface;
-                flags |= eDisplayTransactionNeeded;
-            }
-        }
-        if (what & DisplayState::eLayerStackChanged) {
-            if (disp.layerStack != s.layerStack) {
-                disp.layerStack = s.layerStack;
-                flags |= eDisplayTransactionNeeded;
-            }
-        }
-        if (what & DisplayState::eDisplayProjectionChanged) {
-            if (disp.orientation != s.orientation) {
-                disp.orientation = s.orientation;
-                flags |= eDisplayTransactionNeeded;
-            }
-            if (disp.frame != s.frame) {
-                disp.frame = s.frame;
-                flags |= eDisplayTransactionNeeded;
-            }
-            if (disp.viewport != s.viewport) {
-                disp.viewport = s.viewport;
-                flags |= eDisplayTransactionNeeded;
-            }
-        }
-        if (what & DisplayState::eDisplaySizeChanged) {
-            if (disp.width != s.width) {
-                disp.width = s.width;
-                flags |= eDisplayTransactionNeeded;
-            }
-            if (disp.height != s.height) {
-                disp.height = s.height;
-                flags |= eDisplayTransactionNeeded;
-            }
+    DisplayDeviceState& state = mCurrentState.displays.editValueAt(index);
+
+    const uint32_t what = s.what;
+    if (what & DisplayState::eSurfaceChanged) {
+        if (IInterface::asBinder(state.surface) != IInterface::asBinder(s.surface)) {
+            state.surface = s.surface;
+            flags |= eDisplayTransactionNeeded;
         }
     }
+    if (what & DisplayState::eLayerStackChanged) {
+        if (state.layerStack != s.layerStack) {
+            state.layerStack = s.layerStack;
+            flags |= eDisplayTransactionNeeded;
+        }
+    }
+    if (what & DisplayState::eDisplayProjectionChanged) {
+        if (state.orientation != s.orientation) {
+            state.orientation = s.orientation;
+            flags |= eDisplayTransactionNeeded;
+        }
+        if (state.frame != s.frame) {
+            state.frame = s.frame;
+            flags |= eDisplayTransactionNeeded;
+        }
+        if (state.viewport != s.viewport) {
+            state.viewport = s.viewport;
+            flags |= eDisplayTransactionNeeded;
+        }
+    }
+    if (what & DisplayState::eDisplaySizeChanged) {
+        if (state.width != s.width) {
+            state.width = s.width;
+            flags |= eDisplayTransactionNeeded;
+        }
+        if (state.height != s.height) {
+            state.height = s.height;
+            flags |= eDisplayTransactionNeeded;
+        }
+    }
+
     return flags;
 }
 
@@ -3411,9 +3520,8 @@
     IPCThreadState* ipc = IPCThreadState::self();
     const int pid = ipc->getCallingPid();
     const int uid = ipc->getCallingUid();
-
     if ((uid != AID_GRAPHICS && uid != AID_SYSTEM) &&
-            !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) {
+        !PermissionCache::checkPermission(sAccessSurfaceFlinger, pid, uid)) {
         return false;
     }
     return true;
@@ -3428,7 +3536,7 @@
         return 0;
     }
 
-    if (layer->isPendingRemoval()) {
+    if (layer->isRemoved()) {
         ALOGW("Attempting to set client state on removed layer: %s", layer->getName().string());
         return 0;
     }
@@ -3441,7 +3549,7 @@
 
     // If we are deferring transaction, make sure to push the pending state, as otherwise the
     // pending state will also be deferred.
-    if (what & layer_state_t::eDeferTransaction) {
+    if (what & layer_state_t::eDeferTransaction_legacy) {
         layer->pushPendingState();
     }
 
@@ -3499,6 +3607,11 @@
         if (layer->setColor(s.color))
             flags |= eTraversalNeeded;
     }
+    if (what & layer_state_t::eColorTransformChanged) {
+        if (layer->setColorTransform(s.colorTransform)) {
+            flags |= eTraversalNeeded;
+        }
+    }
     if (what & layer_state_t::eMatrixChanged) {
         // TODO: b/109894387
         //
@@ -3526,12 +3639,8 @@
         if (layer->setFlags(s.flags, s.mask))
             flags |= eTraversalNeeded;
     }
-    if (what & layer_state_t::eCropChanged) {
-        if (layer->setCrop(s.crop, !geometryAppliesWithResize))
-            flags |= eTraversalNeeded;
-    }
-    if (what & layer_state_t::eFinalCropChanged) {
-        if (layer->setFinalCrop(s.finalCrop, !geometryAppliesWithResize))
+    if (what & layer_state_t::eCropChanged_legacy) {
+        if (layer->setCrop_legacy(s.crop_legacy, !geometryAppliesWithResize))
             flags |= eTraversalNeeded;
     }
     if (what & layer_state_t::eLayerStackChanged) {
@@ -3553,15 +3662,15 @@
             flags |= eTransactionNeeded|eTraversalNeeded|eDisplayLayerStackChanged;
         }
     }
-    if (what & layer_state_t::eDeferTransaction) {
-        if (s.barrierHandle != nullptr) {
-            layer->deferTransactionUntil(s.barrierHandle, s.frameNumber);
-        } else if (s.barrierGbp != nullptr) {
-            const sp<IGraphicBufferProducer>& gbp = s.barrierGbp;
+    if (what & layer_state_t::eDeferTransaction_legacy) {
+        if (s.barrierHandle_legacy != nullptr) {
+            layer->deferTransactionUntil_legacy(s.barrierHandle_legacy, s.frameNumber_legacy);
+        } else if (s.barrierGbp_legacy != nullptr) {
+            const sp<IGraphicBufferProducer>& gbp = s.barrierGbp_legacy;
             if (authenticateSurfaceTextureLocked(gbp)) {
                 const auto& otherLayer =
                     (static_cast<MonitoredProducer*>(gbp.get()))->getLayer();
-                layer->deferTransactionUntil(otherLayer, s.frameNumber);
+                layer->deferTransactionUntil_legacy(otherLayer, s.frameNumber_legacy);
             } else {
                 ALOGE("Attempt to defer transaction to to an"
                         " unrecognized GraphicBufferProducer");
@@ -3592,6 +3701,37 @@
         // We don't trigger a traversal here because if no other state is
         // changed, we don't want this to cause any more work
     }
+    if (what & layer_state_t::eTransformChanged) {
+        if (layer->setTransform(s.transform)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eTransformToDisplayInverseChanged) {
+        if (layer->setTransformToDisplayInverse(s.transformToDisplayInverse))
+            flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eCropChanged) {
+        if (layer->setCrop(s.crop)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eBufferChanged) {
+        if (layer->setBuffer(s.buffer)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eAcquireFenceChanged) {
+        if (layer->setAcquireFence(s.acquireFence)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eDataspaceChanged) {
+        if (layer->setDataspace(s.dataspace)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eHdrMetadataChanged) {
+        if (layer->setHdrMetadata(s.hdrMetadata)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eSurfaceDamageRegionChanged) {
+        if (layer->setSurfaceDamageRegion(s.surfaceDamageRegion)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eApiChanged) {
+        if (layer->setApi(s.api)) flags |= eTraversalNeeded;
+    }
+    if (what & layer_state_t::eSidebandStreamChanged) {
+        if (layer->setSidebandStream(s.sidebandStream)) flags |= eTraversalNeeded;
+    }
     return flags;
 }
 
@@ -3604,7 +3744,7 @@
         return;
     }
 
-    if (layer->isPendingRemoval()) {
+    if (layer->isRemoved()) {
         ALOGW("Attempting to destroy on removed layer: %s", layer->getName().string());
         return;
     }
@@ -3634,17 +3774,24 @@
     String8 uniqueName = getUniqueLayerName(name);
 
     switch (flags & ISurfaceComposerClient::eFXSurfaceMask) {
-        case ISurfaceComposerClient::eFXSurfaceNormal:
-            result = createBufferLayer(client,
-                    uniqueName, w, h, flags, format,
-                    handle, gbp, &layer);
+        case ISurfaceComposerClient::eFXSurfaceBufferQueue:
+            result = createBufferQueueLayer(client, uniqueName, w, h, flags, format, handle, gbp,
+                                            &layer);
 
             break;
+        case ISurfaceComposerClient::eFXSurfaceBufferState:
+            result = createBufferStateLayer(client, uniqueName, w, h, flags, handle, &layer);
+            break;
         case ISurfaceComposerClient::eFXSurfaceColor:
             result = createColorLayer(client,
                     uniqueName, w, h, flags,
                     handle, &layer);
             break;
+        case ISurfaceComposerClient::eFXSurfaceContainer:
+            result = createContainerLayer(client,
+                    uniqueName, w, h, flags,
+                    handle, &layer);
+            break;
         default:
             result = BAD_VALUE;
             break;
@@ -3695,15 +3842,17 @@
         });
     }
 
-    ALOGD_IF(dupeCounter > 0, "duplicate layer name: changing %s to %s", name.c_str(), uniqueName.c_str());
+    ALOGV_IF(dupeCounter > 0, "duplicate layer name: changing %s to %s", name.c_str(),
+             uniqueName.c_str());
 
     return uniqueName;
 }
 
-status_t SurfaceFlinger::createBufferLayer(const sp<Client>& client,
-        const String8& name, uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
-        sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp, sp<Layer>* outLayer)
-{
+status_t SurfaceFlinger::createBufferQueueLayer(const sp<Client>& client, const String8& name,
+                                                uint32_t w, uint32_t h, uint32_t flags,
+                                                PixelFormat& format, sp<IBinder>* handle,
+                                                sp<IGraphicBufferProducer>* gbp,
+                                                sp<Layer>* outLayer) {
     // initialize the surfaces
     switch (format) {
     case PIXEL_FORMAT_TRANSPARENT:
@@ -3715,27 +3864,49 @@
         break;
     }
 
-    sp<BufferLayer> layer = new BufferLayer(this, client, name, w, h, flags);
-    status_t err = layer->setBuffers(w, h, format, flags);
+    sp<BufferQueueLayer> layer =
+            new BufferQueueLayer(LayerCreationArgs(this, client, name, w, h, flags));
+    status_t err = layer->setDefaultBufferProperties(w, h, format);
     if (err == NO_ERROR) {
         *handle = layer->getHandle();
         *gbp = layer->getProducer();
         *outLayer = layer;
     }
 
-    ALOGE_IF(err, "createBufferLayer() failed (%s)", strerror(-err));
+    ALOGE_IF(err, "createBufferQueueLayer() failed (%s)", strerror(-err));
     return err;
 }
 
+status_t SurfaceFlinger::createBufferStateLayer(const sp<Client>& client, const String8& name,
+                                                uint32_t w, uint32_t h, uint32_t flags,
+                                                sp<IBinder>* handle, sp<Layer>* outLayer) {
+    sp<BufferStateLayer> layer =
+            new BufferStateLayer(LayerCreationArgs(this, client, name, w, h, flags));
+    *handle = layer->getHandle();
+    *outLayer = layer;
+
+    return NO_ERROR;
+}
+
 status_t SurfaceFlinger::createColorLayer(const sp<Client>& client,
         const String8& name, uint32_t w, uint32_t h, uint32_t flags,
         sp<IBinder>* handle, sp<Layer>* outLayer)
 {
-    *outLayer = new ColorLayer(this, client, name, w, h, flags);
+    *outLayer = new ColorLayer(LayerCreationArgs(this, client, name, w, h, flags));
     *handle = (*outLayer)->getHandle();
     return NO_ERROR;
 }
 
+status_t SurfaceFlinger::createContainerLayer(const sp<Client>& client,
+        const String8& name, uint32_t w, uint32_t h, uint32_t flags,
+        sp<IBinder>* handle, sp<Layer>* outLayer)
+{
+    *outLayer = new ContainerLayer(LayerCreationArgs(this, client, name, w, h, flags));
+    *handle = (*outLayer)->getHandle();
+    return NO_ERROR;
+}
+
+
 status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle)
 {
     // called by a client when it wants to remove a Layer
@@ -3750,29 +3921,19 @@
     return err;
 }
 
-status_t SurfaceFlinger::onLayerDestroyed(const wp<Layer>& layer)
-{
-    // called by ~LayerCleaner() when all references to the IBinder (handle)
-    // are gone
-    sp<Layer> l = layer.promote();
-    if (l == nullptr) {
-        // The layer has already been removed, carry on
-        return NO_ERROR;
-    }
-    // If we have a parent, then we can continue to live as long as it does.
-    return removeLayer(l, true);
-}
-
 // ---------------------------------------------------------------------------
 
 void SurfaceFlinger::onInitializeDisplays() {
+    const auto displayToken = mDisplayTokens[DisplayDevice::DISPLAY_PRIMARY];
+    if (!displayToken) return;
+
     // reset screen orientation and use primary layer stack
     Vector<ComposerState> state;
     Vector<DisplayState> displays;
     DisplayState d;
     d.what = DisplayState::eDisplayProjectionChanged |
              DisplayState::eLayerStackChanged;
-    d.token = mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY];
+    d.token = displayToken;
     d.layerStack = 0;
     d.orientation = DisplayState::eOrientationDefault;
     d.frame.makeInvalid();
@@ -3781,10 +3942,13 @@
     d.height = 0;
     displays.add(d);
     setTransactionState(state, displays, 0);
-    setPowerModeInternal(getDisplayDevice(d.token), HWC_POWER_MODE_NORMAL,
-                         /*stateLockHeld*/ false);
 
-    const auto& activeConfig = getBE().mHwc->getActiveConfig(HWC_DISPLAY_PRIMARY);
+    const auto display = getDisplayDevice(displayToken);
+    if (!display) return;
+
+    setPowerModeInternal(display, HWC_POWER_MODE_NORMAL, /*stateLockHeld*/ false);
+
+    const auto activeConfig = getHwComposer().getActiveConfig(display->getId());
     const nsecs_t period = activeConfig->getVsyncPeriod();
     mAnimFrameTracker.setDisplayRefreshPeriod(period);
 
@@ -3794,53 +3958,48 @@
 }
 
 void SurfaceFlinger::initializeDisplays() {
-    class MessageScreenInitialized : public MessageBase {
-        SurfaceFlinger* flinger;
-    public:
-        explicit MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { }
-        virtual bool handler() {
-            flinger->onInitializeDisplays();
-            return true;
-        }
-    };
-    sp<MessageBase> msg = new MessageScreenInitialized(this);
-    postMessageAsync(msg);  // we may be called from main thread, use async message
+    // Async since we may be called from the main thread.
+    postMessageAsync(new LambdaMessage([this] { onInitializeDisplays(); }));
 }
 
-void SurfaceFlinger::setPowerModeInternal(const sp<DisplayDevice>& hw,
-             int mode, bool stateLockHeld) {
-    ALOGD("Set power mode=%d, type=%d flinger=%p", mode, hw->getDisplayType(),
-            this);
-    int32_t type = hw->getDisplayType();
-    int currentMode = hw->getPowerMode();
+void SurfaceFlinger::setPowerModeInternal(const sp<DisplayDevice>& display, int mode,
+                                          bool stateLockHeld) {
+    const int32_t displayId = display->getId();
+    ALOGD("Setting power mode %d on display %d", mode, displayId);
 
+    int currentMode = display->getPowerMode();
     if (mode == currentMode) {
         return;
     }
 
-    hw->setPowerMode(mode);
-    if (type >= DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES) {
+    if (display->isVirtual()) {
         ALOGW("Trying to set power mode for virtual display");
         return;
     }
 
+    display->setPowerMode(mode);
+
     if (mInterceptor->isEnabled()) {
         ConditionalLock lock(mStateLock, !stateLockHeld);
-        ssize_t idx = mCurrentState.displays.indexOfKey(hw->getDisplayToken());
+        ssize_t idx = mCurrentState.displays.indexOfKey(display->getDisplayToken());
         if (idx < 0) {
             ALOGW("Surface Interceptor SavePowerMode: invalid display token");
             return;
         }
-        mInterceptor->savePowerModeUpdate(mCurrentState.displays.valueAt(idx).displayId, mode);
+        mInterceptor->savePowerModeUpdate(mCurrentState.displays.valueAt(idx).sequenceId, mode);
     }
 
+    int32_t type = display->getDisplayType();
     if (currentMode == HWC_POWER_MODE_OFF) {
         // Turn on the display
         getHwComposer().setPowerMode(type, mode);
-        if (type == DisplayDevice::DISPLAY_PRIMARY &&
-            mode != HWC_POWER_MODE_DOZE_SUSPEND) {
+        if (display->isPrimary() && mode != HWC_POWER_MODE_DOZE_SUSPEND) {
             // FIXME: eventthread only knows about the main display right now
-            mEventThread->onScreenAcquired();
+            if (mUseScheduler) {
+                mScheduler->onScreenAcquired(mAppConnectionHandle);
+            } else {
+                mEventThread->onScreenAcquired();
+            }
             resyncToHardwareVsync(true);
         }
 
@@ -3860,12 +4019,15 @@
             ALOGW("Couldn't set SCHED_OTHER on display off");
         }
 
-        if (type == DisplayDevice::DISPLAY_PRIMARY &&
-            currentMode != HWC_POWER_MODE_DOZE_SUSPEND) {
+        if (display->isPrimary() && currentMode != HWC_POWER_MODE_DOZE_SUSPEND) {
             disableHardwareVsync(true); // also cancels any in-progress resync
 
             // FIXME: eventthread only knows about the main display right now
-            mEventThread->onScreenReleased();
+            if (mUseScheduler) {
+                mScheduler->onScreenReleased(mAppConnectionHandle);
+            } else {
+                mEventThread->onScreenReleased();
+            }
         }
 
         getHwComposer().setPowerMode(type, mode);
@@ -3875,53 +4037,47 @@
                mode == HWC_POWER_MODE_NORMAL) {
         // Update display while dozing
         getHwComposer().setPowerMode(type, mode);
-        if (type == DisplayDevice::DISPLAY_PRIMARY &&
-            currentMode == HWC_POWER_MODE_DOZE_SUSPEND) {
+        if (display->isPrimary() && currentMode == HWC_POWER_MODE_DOZE_SUSPEND) {
             // FIXME: eventthread only knows about the main display right now
-            mEventThread->onScreenAcquired();
+            if (mUseScheduler) {
+                mScheduler->onScreenAcquired(mAppConnectionHandle);
+            } else {
+                mEventThread->onScreenAcquired();
+            }
             resyncToHardwareVsync(true);
         }
     } else if (mode == HWC_POWER_MODE_DOZE_SUSPEND) {
         // Leave display going to doze
-        if (type == DisplayDevice::DISPLAY_PRIMARY) {
+        if (display->isPrimary()) {
             disableHardwareVsync(true); // also cancels any in-progress resync
             // FIXME: eventthread only knows about the main display right now
-            mEventThread->onScreenReleased();
+            if (mUseScheduler) {
+                mScheduler->onScreenReleased(mAppConnectionHandle);
+            } else {
+                mEventThread->onScreenReleased();
+            }
         }
         getHwComposer().setPowerMode(type, mode);
     } else {
         ALOGE("Attempting to set unknown power mode: %d\n", mode);
         getHwComposer().setPowerMode(type, mode);
     }
-    ALOGD("Finished set power mode=%d, type=%d", mode, hw->getDisplayType());
+
+    ALOGD("Finished setting power mode %d on display %d", mode, displayId);
 }
 
-void SurfaceFlinger::setPowerMode(const sp<IBinder>& display, int mode) {
-    class MessageSetPowerMode: public MessageBase {
-        SurfaceFlinger& mFlinger;
-        sp<IBinder> mDisplay;
-        int mMode;
-    public:
-        MessageSetPowerMode(SurfaceFlinger& flinger,
-                const sp<IBinder>& disp, int mode) : mFlinger(flinger),
-                    mDisplay(disp) { mMode = mode; }
-        virtual bool handler() {
-            sp<DisplayDevice> hw(mFlinger.getDisplayDevice(mDisplay));
-            if (hw == nullptr) {
-                ALOGE("Attempt to set power mode = %d for null display %p",
-                        mMode, mDisplay.get());
-            } else if (hw->getDisplayType() >= DisplayDevice::DISPLAY_VIRTUAL) {
-                ALOGW("Attempt to set power mode = %d for virtual display",
-                        mMode);
-            } else {
-                mFlinger.setPowerModeInternal(
-                        hw, mMode, /*stateLockHeld*/ false);
-            }
-            return true;
+void SurfaceFlinger::setPowerMode(const sp<IBinder>& displayToken, int mode) {
+    postMessageSync(new LambdaMessage([&] {
+        const auto display = getDisplayDevice(displayToken);
+        if (!display) {
+            ALOGE("Attempt to set power mode %d for invalid display token %p", mode,
+                  displayToken.get());
+        } else if (display->isVirtual()) {
+            ALOGW("Attempt to set power mode %d for virtual display", mode);
+        } else {
+            setPowerModeInternal(display, mode, /*stateLockHeld*/ false);
         }
-    };
-    sp<MessageBase> msg = new MessageSetPowerMode(*this, display, mode);
-    postMessageSync(msg);
+    }));
 }
 
 // ---------------------------------------------------------------------------
@@ -3979,7 +4135,7 @@
             if ((index < numArgs) &&
                     (args[index] == String16("--dispsync"))) {
                 index++;
-                mPrimaryDispSync.dump(result);
+                mPrimaryDispSync->dump(result);
                 dumpAll = false;
             }
 
@@ -4031,6 +4187,20 @@
                 dumpAll = false;
             }
 
+            if ((index < numArgs) &&
+                    (args[index] == String16("--frame-composition"))) {
+                index++;
+                dumpFrameCompositionInfo(result);
+                dumpAll = false;
+            }
+
+            if ((index < numArgs) &&
+                (args[index] == String16("--display-identification"))) {
+                index++;
+                dumpDisplayIdentificationData(result);
+                dumpAll = false;
+            }
+
             if ((index < numArgs) && (args[index] == String16("--timestats"))) {
                 index++;
                 mTimeStats.parseArgs(asProto, args, index, result);
@@ -4072,9 +4242,12 @@
         index++;
     }
 
-    const auto& activeConfig = getBE().mHwc->getActiveConfig(HWC_DISPLAY_PRIMARY);
-    const nsecs_t period = activeConfig->getVsyncPeriod();
-    result.appendFormat("%" PRId64 "\n", period);
+    if (const auto displayId = DisplayDevice::DISPLAY_PRIMARY;
+        getHwComposer().isConnected(displayId)) {
+        const auto activeConfig = getBE().mHwc->getActiveConfig(displayId);
+        const nsecs_t period = activeConfig->getVsyncPeriod();
+        result.appendFormat("%" PRId64 "\n", period);
+    }
 
     if (name.isEmpty()) {
         mAnimFrameTracker.dumpStats(result);
@@ -4210,33 +4383,100 @@
     result.append("\n");
 }
 
+void SurfaceFlinger::dumpDisplayIdentificationData(String8& result) const {
+    for (const auto& [token, display] : mDisplays) {
+        const int32_t displayId = display->getId();
+        const auto hwcDisplayId = getHwComposer().getHwcDisplayId(displayId);
+        if (!hwcDisplayId) {
+            continue;
+        }
+
+        result.appendFormat("Display %d (HWC display %" PRIu64 "): ", displayId, *hwcDisplayId);
+        uint8_t port;
+        DisplayIdentificationData data;
+        if (!getHwComposer().getDisplayIdentificationData(*hwcDisplayId, &port, &data)) {
+            result.append("no identification data\n");
+            continue;
+        }
+
+        if (!isEdid(data)) {
+            result.append("unknown identification data: ");
+            for (uint8_t byte : data) {
+                result.appendFormat("%x ", byte);
+            }
+            result.append("\n");
+            continue;
+        }
+
+        const auto edid = parseEdid(data);
+        if (!edid) {
+            result.append("invalid EDID: ");
+            for (uint8_t byte : data) {
+                result.appendFormat("%x ", byte);
+            }
+            result.append("\n");
+            continue;
+        }
+
+        result.appendFormat("port=%u pnpId=%s displayName=\"", port, edid->pnpId.data());
+        result.append(edid->displayName.data(), edid->displayName.length());
+        result.append("\"\n");
+    }
+    result.append("\n");
+}
+
 void SurfaceFlinger::dumpWideColorInfo(String8& result) const {
-    result.appendFormat("hasWideColorDisplay: %d\n", hasWideColorDisplay);
+    result.appendFormat("Device has wide color display: %d\n", hasWideColorDisplay);
+    result.appendFormat("Device uses color management: %d\n", useColorManagement);
     result.appendFormat("DisplayColorSetting: %s\n",
             decodeDisplayColorSetting(mDisplayColorSetting).c_str());
 
     // TODO: print out if wide-color mode is active or not
 
-    for (size_t d = 0; d < mDisplays.size(); d++) {
-        const sp<const DisplayDevice>& displayDevice(mDisplays[d]);
-        int32_t hwcId = displayDevice->getHwcDisplayId();
-        if (hwcId == DisplayDevice::DISPLAY_ID_INVALID) {
+    for (const auto& [token, display] : mDisplays) {
+        const int32_t displayId = display->getId();
+        if (displayId == DisplayDevice::DISPLAY_ID_INVALID) {
             continue;
         }
 
-        result.appendFormat("Display %d color modes:\n", hwcId);
-        std::vector<ColorMode> modes = getHwComposer().getColorModes(hwcId);
+        result.appendFormat("Display %d color modes:\n", displayId);
+        std::vector<ColorMode> modes = getHwComposer().getColorModes(displayId);
         for (auto&& mode : modes) {
             result.appendFormat("    %s (%d)\n", decodeColorMode(mode).c_str(), mode);
         }
 
-        ColorMode currentMode = displayDevice->getActiveColorMode();
+        ColorMode currentMode = display->getActiveColorMode();
         result.appendFormat("    Current color mode: %s (%d)\n",
                             decodeColorMode(currentMode).c_str(), currentMode);
     }
     result.append("\n");
 }
 
+void SurfaceFlinger::dumpFrameCompositionInfo(String8& result) const {
+    std::string stringResult;
+
+    for (const auto& [token, display] : mDisplays) {
+        const auto displayId = display->getId();
+        if (displayId == DisplayDevice::DISPLAY_ID_INVALID) {
+            continue;
+        }
+
+        const auto& compositionInfoIt = getBE().mEndOfFrameCompositionInfo.find(displayId);
+        if (compositionInfoIt == getBE().mEndOfFrameCompositionInfo.end()) {
+            break;
+        }
+        const auto& compositionInfoList = compositionInfoIt->second;
+        stringResult += base::StringPrintf("Display: %d\n", displayId);
+        stringResult += base::StringPrintf("numComponents: %zu\n", compositionInfoList.size());
+        for (const auto& compositionInfo : compositionInfoList) {
+            compositionInfo.dump(stringResult, nullptr);
+            stringResult += base::StringPrintf("\n");
+        }
+    }
+
+    result.append(stringResult.c_str());
+}
+
 LayersProto SurfaceFlinger::dumpProtoInfo(LayerVector::StateSet stateSet) const {
     LayersProto layersProto;
     const bool useDrawing = stateSet == LayerVector::StateSet::Drawing;
@@ -4249,23 +4489,22 @@
     return layersProto;
 }
 
-LayersProto SurfaceFlinger::dumpVisibleLayersProtoInfo(int32_t hwcId) const {
+LayersProto SurfaceFlinger::dumpVisibleLayersProtoInfo(const DisplayDevice& display) const {
     LayersProto layersProto;
-    const sp<DisplayDevice>& displayDevice(mDisplays[hwcId]);
 
     SizeProto* resolution = layersProto.mutable_resolution();
-    resolution->set_w(displayDevice->getWidth());
-    resolution->set_h(displayDevice->getHeight());
+    resolution->set_w(display.getWidth());
+    resolution->set_h(display.getHeight());
 
-    layersProto.set_color_mode(decodeColorMode(displayDevice->getActiveColorMode()));
-    layersProto.set_color_transform(decodeColorTransform(displayDevice->getColorTransform()));
-    layersProto.set_global_transform(
-            static_cast<int32_t>(displayDevice->getOrientationTransform()));
+    layersProto.set_color_mode(decodeColorMode(display.getActiveColorMode()));
+    layersProto.set_color_transform(decodeColorTransform(display.getColorTransform()));
+    layersProto.set_global_transform(static_cast<int32_t>(display.getOrientationTransform()));
 
+    const int32_t displayId = display.getId();
     mDrawingState.traverseInZOrder([&](Layer* layer) {
-        if (!layer->visibleRegion.isEmpty() && layer->getBE().mHwcLayers.count(hwcId)) {
+        if (!layer->visibleRegion.isEmpty() && layer->getBE().mHwcLayers.count(displayId)) {
             LayerProto* layerProto = layersProto.add_layers();
-            layer->writeToProto(layerProto, hwcId);
+            layer->writeToProto(layerProto, displayId);
         }
     });
 
@@ -4286,9 +4525,7 @@
 
     // figure out if we're stuck somewhere
     const nsecs_t now = systemTime();
-    const nsecs_t inSwapBuffers(mDebugInSwapBuffers);
     const nsecs_t inTransaction(mDebugInTransaction);
-    nsecs_t inSwapBuffersDuration = (inSwapBuffers) ? now-inSwapBuffers : 0;
     nsecs_t inTransactionDuration = (inTransaction) ? now-inTransaction : 0;
 
     /*
@@ -4303,6 +4540,9 @@
     appendGuiConfigString(result);
     result.append("\n");
 
+    result.append("\nDisplay identification data:\n");
+    dumpDisplayIdentificationData(result);
+
     result.append("\nWide-Color information:\n");
     dumpWideColorInfo(result);
 
@@ -4312,28 +4552,32 @@
     result.append(SyncFeatures::getInstance().toString());
     result.append("\n");
 
-    const auto& activeConfig = getBE().mHwc->getActiveConfig(HWC_DISPLAY_PRIMARY);
-
     colorizer.bold(result);
-    result.append("DispSync configuration: ");
+    result.append("DispSync configuration:\n");
     colorizer.reset(result);
+
     const auto [sfEarlyOffset, appEarlyOffset] = mVsyncModulator.getEarlyOffsets();
     const auto [sfEarlyGlOffset, appEarlyGlOffset] = mVsyncModulator.getEarlyGlOffsets();
-    result.appendFormat(
-        "app phase %" PRId64 " ns, "
-        "sf phase %" PRId64 " ns, "
-        "early app phase %" PRId64 " ns, "
-        "early sf phase %" PRId64 " ns, "
-        "early app gl phase %" PRId64 " ns, "
-        "early sf gl phase %" PRId64 " ns, "
-        "present offset %" PRId64 " ns (refresh %" PRId64 " ns)",
-        vsyncPhaseOffsetNs,
-        sfVsyncPhaseOffsetNs,
-        appEarlyOffset,
-        sfEarlyOffset,
-        appEarlyGlOffset,
-        sfEarlyOffset,
-        dispSyncPresentTimeOffset, activeConfig->getVsyncPeriod());
+    if (const auto displayId = DisplayDevice::DISPLAY_PRIMARY;
+        getHwComposer().isConnected(displayId)) {
+        const auto activeConfig = getHwComposer().getActiveConfig(displayId);
+        result.appendFormat("Display %d: "
+                "app phase %" PRId64 " ns, "
+                "sf phase %" PRId64 " ns, "
+                "early app phase %" PRId64 " ns, "
+                "early sf phase %" PRId64 " ns, "
+                "early app gl phase %" PRId64 " ns, "
+                "early sf gl phase %" PRId64 " ns, "
+                "present offset %" PRId64 " ns (refresh %" PRId64 " ns)",
+                displayId,
+                vsyncPhaseOffsetNs,
+                sfVsyncPhaseOffsetNs,
+                appEarlyOffset,
+                sfEarlyOffset,
+                appEarlyGlOffset,
+                sfEarlyGlOffset,
+                dispSyncPresentTimeOffset, activeConfig->getVsyncPeriod());
+    }
     result.append("\n");
 
     // Dump static screen stats
@@ -4341,6 +4585,8 @@
     dumpStaticScreenStats(result);
     result.append("\n");
 
+    result.appendFormat("Missed frame count: %u\n\n", mFrameMissedCount.load());
+
     dumpBufferingStats(result);
 
     /*
@@ -4352,9 +4598,15 @@
                         mGraphicBufferProducerList.size(), mMaxGraphicBufferProducerListSize);
     colorizer.reset(result);
 
-    LayersProto layersProto = dumpProtoInfo(LayerVector::StateSet::Current);
-    auto layerTree = LayerProtoParser::generateLayerTree(layersProto);
-    result.append(LayerProtoParser::layersToString(std::move(layerTree)).c_str());
+    {
+        LayersProto layersProto = dumpProtoInfo(LayerVector::StateSet::Current);
+        auto layerTree = LayerProtoParser::generateLayerTree(layersProto);
+        result.append(LayerProtoParser::layerTreeToString(layerTree).c_str());
+        result.append("\n");
+    }
+
+    result.append("\nFrame-Composition information:\n");
+    dumpFrameCompositionInfo(result);
     result.append("\n");
 
     /*
@@ -4364,9 +4616,8 @@
     colorizer.bold(result);
     result.appendFormat("Displays (%zu entries)\n", mDisplays.size());
     colorizer.reset(result);
-    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-        const sp<const DisplayDevice>& hw(mDisplays[dpy]);
-        hw->dump(result);
+    for (const auto& [token, display] : mDisplays) {
+        display->dump(result);
     }
     result.append("\n");
 
@@ -4379,42 +4630,40 @@
     colorizer.reset(result);
 
     HWComposer& hwc(getHwComposer());
-    sp<const DisplayDevice> hw(getDefaultDisplayDeviceLocked());
+    const auto display = getDefaultDisplayDeviceLocked();
 
     getBE().mRenderEngine->dump(result);
 
-    if (hw) {
-        hw->undefinedRegion.dump(result, "undefinedRegion");
-        result.appendFormat("  orientation=%d, isDisplayOn=%d\n",
-                hw->getOrientation(), hw->isDisplayOn());
+    if (display) {
+        display->undefinedRegion.dump(result, "undefinedRegion");
+        result.appendFormat("  orientation=%d, isPoweredOn=%d\n", display->getOrientation(),
+                            display->isPoweredOn());
     }
-    result.appendFormat(
-            "  last eglSwapBuffers() time: %f us\n"
-            "  last transaction time     : %f us\n"
-            "  transaction-flags         : %08x\n"
-            "  refresh-rate              : %f fps\n"
-            "  x-dpi                     : %f\n"
-            "  y-dpi                     : %f\n"
-            "  gpu_to_cpu_unsupported    : %d\n"
-            ,
-            mLastSwapBufferTime/1000.0,
-            mLastTransactionTime/1000.0,
-            mTransactionFlags,
-            1e9 / activeConfig->getVsyncPeriod(),
-            activeConfig->getDpiX(),
-            activeConfig->getDpiY(),
-            !mGpuToCpuSupported);
+    result.appendFormat("  transaction-flags         : %08x\n"
+                        "  gpu_to_cpu_unsupported    : %d\n",
+                        mTransactionFlags.load(), !mGpuToCpuSupported);
 
-    result.appendFormat("  eglSwapBuffers time: %f us\n",
-            inSwapBuffersDuration/1000.0);
+    if (display) {
+        const auto activeConfig = getHwComposer().getActiveConfig(display->getId());
+        result.appendFormat("  refresh-rate              : %f fps\n"
+                            "  x-dpi                     : %f\n"
+                            "  y-dpi                     : %f\n",
+                            1e9 / activeConfig->getVsyncPeriod(), activeConfig->getDpiX(),
+                            activeConfig->getDpiY());
+    }
 
     result.appendFormat("  transaction time: %f us\n",
             inTransactionDuration/1000.0);
 
+    result.appendFormat("  use Scheduler: %s\n", mUseScheduler ? "true" : "false");
     /*
      * VSYNC state
      */
-    mEventThread->dump(result);
+    if (mUseScheduler) {
+        mScheduler->dump(mAppConnectionHandle, result);
+    } else {
+        mEventThread->dump(result);
+    }
     result.append("\n");
 
     /*
@@ -4426,18 +4675,15 @@
     /*
      * HWC layer minidump
      */
-    for (size_t d = 0; d < mDisplays.size(); d++) {
-        const sp<const DisplayDevice>& displayDevice(mDisplays[d]);
-        int32_t hwcId = displayDevice->getHwcDisplayId();
-        if (hwcId == DisplayDevice::DISPLAY_ID_INVALID) {
+    for (const auto& [token, display] : mDisplays) {
+        const int32_t displayId = display->getId();
+        if (displayId == DisplayDevice::DISPLAY_ID_INVALID) {
             continue;
         }
 
-        result.appendFormat("Display %d HWC layers:\n", hwcId);
+        result.appendFormat("Display %d HWC layers:\n", displayId);
         Layer::miniDumpHeader(result);
-        mCurrentState.traverseInZOrder([&](Layer* layer) {
-            layer->miniDump(result, hwcId);
-        });
+        mCurrentState.traverseInZOrder([&](Layer* layer) { layer->miniDump(result, displayId); });
         result.append("\n");
     }
 
@@ -4468,22 +4714,17 @@
     }
 }
 
-const Vector< sp<Layer> >&
-SurfaceFlinger::getLayerSortedByZForHwcDisplay(int id) {
+const Vector<sp<Layer>>& SurfaceFlinger::getLayerSortedByZForHwcDisplay(int32_t displayId) {
     // Note: mStateLock is held here
-    wp<IBinder> dpy;
-    for (size_t i=0 ; i<mDisplays.size() ; i++) {
-        if (mDisplays.valueAt(i)->getHwcDisplayId() == id) {
-            dpy = mDisplays.keyAt(i);
-            break;
+    for (const auto& [token, display] : mDisplays) {
+        if (display->getId() == displayId) {
+            return getDisplayDeviceLocked(token)->getVisibleLayersSortedByZ();
         }
     }
-    if (dpy == nullptr) {
-        ALOGE("getLayerSortedByZForHwcDisplay: invalid hwc display id %d", id);
-        // Just use the primary display so we have something to return
-        dpy = getBuiltInDisplay(DisplayDevice::DISPLAY_PRIMARY);
-    }
-    return getDisplayDeviceLocked(dpy)->getVisibleLayersSortedByZ();
+
+    ALOGE("%s: Invalid display %d", __FUNCTION__, displayId);
+    static const Vector<sp<Layer>> empty;
+    return empty;
 }
 
 bool SurfaceFlinger::startDdmConnection()
@@ -4529,51 +4770,65 @@
 }
 
 status_t SurfaceFlinger::CheckTransactCodeCredentials(uint32_t code) {
-    switch (code) {
-        case CREATE_CONNECTION:
-        case CREATE_DISPLAY:
+#pragma clang diagnostic push
+#pragma clang diagnostic error "-Wswitch-enum"
+    switch (static_cast<ISurfaceComposerTag>(code)) {
+        // These methods should at minimum make sure that the client requested
+        // access to SF.
         case BOOT_FINISHED:
         case CLEAR_ANIMATION_FRAME_STATS:
-        case GET_ANIMATION_FRAME_STATS:
-        case SET_POWER_MODE:
-        case GET_HDR_CAPABILITIES:
+        case CREATE_CONNECTION:
+        case CREATE_DISPLAY:
+        case DESTROY_DISPLAY:
         case ENABLE_VSYNC_INJECTIONS:
+        case GET_ACTIVE_COLOR_MODE:
+        case GET_ANIMATION_FRAME_STATS:
+        case GET_HDR_CAPABILITIES:
+        case SET_ACTIVE_CONFIG:
+        case SET_ACTIVE_COLOR_MODE:
         case INJECT_VSYNC:
-        {
-            // codes that require permission check
+        case SET_POWER_MODE: {
             if (!callingThreadHasUnscopedSurfaceFlingerAccess()) {
                 IPCThreadState* ipc = IPCThreadState::self();
                 ALOGE("Permission Denial: can't access SurfaceFlinger pid=%d, uid=%d",
                         ipc->getCallingPid(), ipc->getCallingUid());
                 return PERMISSION_DENIED;
             }
-            break;
-        }
-        /*
-         * Calling setTransactionState is safe, because you need to have been
-         * granted a reference to Client* and Handle* to do anything with it.
-         *
-         * Creating a scoped connection is safe, as per discussion in ISurfaceComposer.h
-         */
-        case SET_TRANSACTION_STATE:
-        case CREATE_SCOPED_CONNECTION:
-        {
             return OK;
         }
-        case CAPTURE_SCREEN:
-        {
-            // codes that require permission check
+        case GET_LAYER_DEBUG_INFO: {
             IPCThreadState* ipc = IPCThreadState::self();
             const int pid = ipc->getCallingPid();
             const int uid = ipc->getCallingUid();
-            if ((uid != AID_GRAPHICS) &&
-                    !PermissionCache::checkPermission(sReadFramebuffer, pid, uid)) {
-                ALOGE("Permission Denial: can't read framebuffer pid=%d, uid=%d", pid, uid);
+            if ((uid != AID_SHELL) && !PermissionCache::checkPermission(sDump, pid, uid)) {
+                ALOGE("Layer debug info permission denied for pid=%d, uid=%d", pid, uid);
                 return PERMISSION_DENIED;
             }
-            break;
+            return OK;
         }
-        case CAPTURE_LAYERS: {
+        // Used by apps to hook Choreographer to SurfaceFlinger.
+        case CREATE_DISPLAY_EVENT_CONNECTION:
+        // The following calls are currently used by clients that do not
+        // request necessary permissions. However, they do not expose any secret
+        // information, so it is OK to pass them.
+        case AUTHENTICATE_SURFACE:
+        case GET_ACTIVE_CONFIG:
+        case GET_BUILT_IN_DISPLAY:
+        case GET_DISPLAY_COLOR_MODES:
+        case GET_DISPLAY_CONFIGS:
+        case GET_DISPLAY_STATS:
+        case GET_SUPPORTED_FRAME_TIMESTAMPS:
+        // Calling setTransactionState is safe, because you need to have been
+        // granted a reference to Client* and Handle* to do anything with it.
+        case SET_TRANSACTION_STATE:
+        // Creating a scoped connection is safe, as per discussion in ISurfaceComposer.h
+        case CREATE_SCOPED_CONNECTION:
+        case GET_COMPOSITION_PREFERENCE: {
+            return OK;
+        }
+        case CAPTURE_LAYERS:
+        case CAPTURE_SCREEN: {
+            // codes that require permission check
             IPCThreadState* ipc = IPCThreadState::self();
             const int pid = ipc->getCallingPid();
             const int uid = ipc->getCallingUid();
@@ -4582,15 +4837,37 @@
                 ALOGE("Permission Denial: can't read framebuffer pid=%d, uid=%d", pid, uid);
                 return PERMISSION_DENIED;
             }
-            break;
+            return OK;
+        }
+        // The following codes are deprecated and should never be allowed to access SF.
+        case CONNECT_DISPLAY_UNUSED:
+        case CREATE_GRAPHIC_BUFFER_ALLOC_UNUSED: {
+            ALOGE("Attempting to access SurfaceFlinger with unused code: %u", code);
+            return PERMISSION_DENIED;
         }
     }
-    return OK;
+
+    // These codes are used for the IBinder protocol to either interrogate the recipient
+    // side of the transaction for its canonical interface descriptor or to dump its state.
+    // We let them pass by default.
+    if (code == IBinder::INTERFACE_TRANSACTION || code == IBinder::DUMP_TRANSACTION ||
+        code == IBinder::PING_TRANSACTION || code == IBinder::SHELL_COMMAND_TRANSACTION ||
+        code == IBinder::SYSPROPS_TRANSACTION) {
+        return OK;
+    }
+    // Numbers from 1000 to 1029 are currently use for backdoors. The code
+    // in onTransact verifies that the user is root, and has access to use SF.
+    if (code >= 1000 && code <= 1029) {
+        ALOGV("Accessing SurfaceFlinger through backdoor code: %u", code);
+        return OK;
+    }
+    ALOGE("Permission Denial: SurfaceFlinger did not recognize request code: %u", code);
+    return PERMISSION_DENIED;
+#pragma clang diagnostic pop
 }
 
-status_t SurfaceFlinger::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
-{
+status_t SurfaceFlinger::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
+                                    uint32_t flags) {
     status_t credentialCheck = CheckTransactCodeCredentials(code);
     if (credentialCheck != OK) {
         return credentialCheck;
@@ -4655,8 +4932,12 @@
                 reply->writeInt32(mDebugDisableHWC);
                 return NO_ERROR;
             case 1013: {
-                sp<const DisplayDevice> hw(getDefaultDisplayDevice());
-                reply->writeInt32(hw->getPageFlipCount());
+                const auto display = getDefaultDisplayDevice();
+                if (!display) {
+                    return NAME_NOT_FOUND;
+                }
+
+                reply->writeInt32(display->getPageFlipCount());
                 return NO_ERROR;
             }
             case 1014: {
@@ -4715,7 +4996,7 @@
             // Needs to be shifted to proper binder interface when we productize
             case 1016: {
                 n = data.readInt32();
-                mPrimaryDispSync.setRefreshSkipCount(n);
+                mPrimaryDispSync->setRefreshSkipCount(n);
                 return NO_ERROR;
             }
             case 1017: {
@@ -4725,12 +5006,20 @@
             }
             case 1018: { // Modify Choreographer's phase offset
                 n = data.readInt32();
-                mEventThread->setPhaseOffset(static_cast<nsecs_t>(n));
+                if (mUseScheduler) {
+                    mScheduler->setPhaseOffset(mAppConnectionHandle, static_cast<nsecs_t>(n));
+                } else {
+                    mEventThread->setPhaseOffset(static_cast<nsecs_t>(n));
+                }
                 return NO_ERROR;
             }
             case 1019: { // Modify SurfaceFlinger's phase offset
                 n = data.readInt32();
-                mSFEventThread->setPhaseOffset(static_cast<nsecs_t>(n));
+                if (mUseScheduler) {
+                    mScheduler->setPhaseOffset(mSfConnectionHandle, static_cast<nsecs_t>(n));
+                } else {
+                    mSFEventThread->setPhaseOffset(static_cast<nsecs_t>(n));
+                }
                 return NO_ERROR;
             }
             case 1020: { // Layer updates interceptor
@@ -4763,7 +5052,9 @@
                 repaintEverything();
                 return NO_ERROR;
             }
-            case 1024: { // Is wide color gamut rendering/color management supported?
+            // TODO(b/111505327): Find out whether the usage of 1024 can switch to 1030,
+            // deprecate 1024 if they can.
+            case 1024: { // Does device have wide color gamut display?
                 reply->writeBool(hasWideColorDisplay);
                 return NO_ERROR;
             }
@@ -4787,35 +5078,87 @@
             }
             // Is a DisplayColorSetting supported?
             case 1027: {
-                sp<const DisplayDevice> hw(getDefaultDisplayDevice());
-                if (!hw) {
+                const auto display = getDefaultDisplayDevice();
+                if (!display) {
                     return NAME_NOT_FOUND;
                 }
 
                 DisplayColorSetting setting = static_cast<DisplayColorSetting>(data.readInt32());
                 switch (setting) {
                     case DisplayColorSetting::MANAGED:
-                        reply->writeBool(hasWideColorDisplay);
+                        reply->writeBool(useColorManagement);
                         break;
                     case DisplayColorSetting::UNMANAGED:
                         reply->writeBool(true);
                         break;
                     case DisplayColorSetting::ENHANCED:
-                        reply->writeBool(hw->hasRenderIntent(RenderIntent::ENHANCE));
+                        reply->writeBool(display->hasRenderIntent(RenderIntent::ENHANCE));
                         break;
                     default: // vendor display color setting
-                        reply->writeBool(hw->hasRenderIntent(static_cast<RenderIntent>(setting)));
+                        reply->writeBool(
+                                display->hasRenderIntent(static_cast<RenderIntent>(setting)));
                         break;
                 }
                 return NO_ERROR;
             }
+            // Is VrFlinger active?
+            case 1028: {
+                Mutex::Autolock _l(mStateLock);
+                reply->writeBool(getBE().mHwc->isUsingVrComposer());
+                return NO_ERROR;
+            }
+            case 1029: {
+                // Code 1029 is an experimental feature that allows applications to
+                // simulate a high frequency panel by setting a multiplier and divisor
+                // on the VSYNC-sf clock.  If either the multiplier or divisor are
+                // 0, then the code simply return the current multiplier and divisor.
+                HWC2::Device::FrequencyScaler frequencyScaler;
+                frequencyScaler.multiplier = data.readInt32();
+                frequencyScaler.divisor = data.readInt32();
+
+                if ((frequencyScaler.multiplier == 0) || (frequencyScaler.divisor == 0)) {
+                    frequencyScaler = getBE().mHwc->getDisplayFrequencyScaleParameters();
+                    reply->writeInt32(frequencyScaler.multiplier);
+                    reply->writeInt32(frequencyScaler.divisor);
+                    return NO_ERROR;
+                }
+
+                if ((frequencyScaler.multiplier == 1) && (frequencyScaler.divisor == 1)) {
+                    enableHardwareVsync();
+                } else {
+                    disableHardwareVsync(true);
+                }
+                mPrimaryDispSync->scalePeriod(frequencyScaler);
+                getBE().mHwc->setDisplayFrequencyScaleParameters(frequencyScaler);
+
+                ATRACE_INT("PeriodMultiplier", frequencyScaler.multiplier);
+                ATRACE_INT("PeriodDivisor", frequencyScaler.divisor);
+
+                const hwc2_display_t hwcDisplayId = getBE().mHwc->getActiveConfig(
+                        DisplayDevice::DISPLAY_PRIMARY)->getDisplayId();
+
+                onHotplugReceived(getBE().mComposerSequenceId,
+                        hwcDisplayId, HWC2::Connection::Disconnected);
+                onHotplugReceived(getBE().mComposerSequenceId,
+                        hwcDisplayId, HWC2::Connection::Connected);
+                frequencyScaler = getBE().mHwc->getDisplayFrequencyScaleParameters();
+                reply->writeInt32(frequencyScaler.multiplier);
+                reply->writeInt32(frequencyScaler.divisor);
+
+                return NO_ERROR;
+            }
+            // Is device color managed?
+            case 1030: {
+                reply->writeBool(useColorManagement);
+                return NO_ERROR;
+            }
         }
     }
     return err;
 }
 
 void SurfaceFlinger::repaintEverything() {
-    android_atomic_or(1, &mRepaintEverything);
+    mRepaintEverything = true;
     signalTransaction();
 }
 
@@ -4832,32 +5175,40 @@
     const int mApi;
 };
 
-status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display, sp<GraphicBuffer>* outBuffer,
-                                       Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
-                                       int32_t minLayerZ, int32_t maxLayerZ,
+status_t SurfaceFlinger::captureScreen(const sp<IBinder>& displayToken,
+                                       sp<GraphicBuffer>* outBuffer, Rect sourceCrop,
+                                       uint32_t reqWidth, uint32_t reqHeight,
                                        bool useIdentityTransform,
                                        ISurfaceComposer::Rotation rotation) {
     ATRACE_CALL();
 
-    if (CC_UNLIKELY(display == 0)) return BAD_VALUE;
+    if (!displayToken) return BAD_VALUE;
 
-    const sp<const DisplayDevice> device(getDisplayDeviceLocked(display));
-    if (CC_UNLIKELY(device == 0)) return BAD_VALUE;
+    auto renderAreaRotation = fromSurfaceComposerRotation(rotation);
 
-    const Rect& dispScissor = device->getScissor();
-    if (!dispScissor.isEmpty()) {
-        sourceCrop.set(dispScissor);
-        // adb shell screencap will default reqWidth and reqHeight to zeros.
+    sp<DisplayDevice> display;
+    {
+        Mutex::Autolock _l(mStateLock);
+
+        display = getDisplayDeviceLocked(displayToken);
+        if (!display) return BAD_VALUE;
+
+        // ignore sourceCrop (i.e., use the projected logical display
+        // viewport) until the framework is fixed
+        sourceCrop.clear();
+
+        // set the requested width/height to the logical display viewport size
+        // by default
         if (reqWidth == 0 || reqHeight == 0) {
-            reqWidth = uint32_t(device->getViewport().width());
-            reqHeight = uint32_t(device->getViewport().height());
+            reqWidth = uint32_t(display->getViewport().width());
+            reqHeight = uint32_t(display->getViewport().height());
         }
     }
 
-    DisplayRenderArea renderArea(device, sourceCrop, reqHeight, reqWidth, rotation);
+    DisplayRenderArea renderArea(display, sourceCrop, reqWidth, reqHeight, renderAreaRotation);
 
     auto traverseLayers = std::bind(std::mem_fn(&SurfaceFlinger::traverseLayersInDisplay), this,
-                                    device, minLayerZ, maxLayerZ, std::placeholders::_1);
+                                    display, std::placeholders::_1);
     return captureScreenCommon(renderArea, traverseLayers, outBuffer, useIdentityTransform);
 }
 
@@ -4870,20 +5221,23 @@
     public:
         LayerRenderArea(SurfaceFlinger* flinger, const sp<Layer>& layer, const Rect crop,
                         int32_t reqWidth, int32_t reqHeight, bool childrenOnly)
-              : RenderArea(reqHeight, reqWidth, CaptureFill::CLEAR),
+              : RenderArea(reqWidth, reqHeight, CaptureFill::CLEAR),
                 mLayer(layer),
                 mCrop(crop),
+                mNeedsFiltering(false),
                 mFlinger(flinger),
                 mChildrenOnly(childrenOnly) {}
-        const Transform& getTransform() const override { return mTransform; }
+        const ui::Transform& getTransform() const override { return mTransform; }
         Rect getBounds() const override {
             const Layer::State& layerState(mLayer->getDrawingState());
-            return Rect(layerState.active.w, layerState.active.h);
+            return Rect(mLayer->getActiveWidth(layerState), mLayer->getActiveHeight(layerState));
         }
-        int getHeight() const override { return mLayer->getDrawingState().active.h; }
-        int getWidth() const override { return mLayer->getDrawingState().active.w; }
+        int getHeight() const override {
+            return mLayer->getActiveHeight(mLayer->getDrawingState());
+        }
+        int getWidth() const override { return mLayer->getActiveWidth(mLayer->getDrawingState()); }
         bool isSecure() const override { return false; }
-        bool needsFiltering() const override { return false; }
+        bool needsFiltering() const override { return mNeedsFiltering; }
         Rect getSourceCrop() const override {
             if (mCrop.isEmpty()) {
                 return getBounds();
@@ -4904,14 +5258,19 @@
         };
 
         void render(std::function<void()> drawLayers) override {
+            const Rect sourceCrop = getSourceCrop();
+            // no need to check rotation because there is none
+            mNeedsFiltering = sourceCrop.width() != getReqWidth() ||
+                sourceCrop.height() != getReqHeight();
+
             if (!mChildrenOnly) {
                 mTransform = mLayer->getTransform().inverse();
                 drawLayers();
             } else {
                 Rect bounds = getBounds();
-                screenshotParentLayer =
-                        new ContainerLayer(mFlinger, nullptr, String8("Screenshot Parent"),
-                                           bounds.getWidth(), bounds.getHeight(), 0);
+                screenshotParentLayer = new ContainerLayer(
+                        LayerCreationArgs(mFlinger, nullptr, String8("Screenshot Parent"),
+                                          bounds.getWidth(), bounds.getHeight(), 0));
 
                 ReparentForDrawing reparent(mLayer, screenshotParentLayer);
                 drawLayers();
@@ -4925,7 +5284,8 @@
         // In the "childrenOnly" case we reparent the children to a screenshot
         // layer which has no properties set and which does not draw.
         sp<ContainerLayer> screenshotParentLayer;
-        Transform mTransform;
+        ui::Transform mTransform;
+        bool mNeedsFiltering;
 
         SurfaceFlinger* mFlinger;
         const bool mChildrenOnly;
@@ -4934,7 +5294,7 @@
     auto layerHandle = reinterpret_cast<Layer::Handle*>(layerHandleBinder.get());
     auto parent = layerHandle->owner.promote();
 
-    if (parent == nullptr || parent->isPendingRemoval()) {
+    if (parent == nullptr || parent->isRemoved()) {
         ALOGE("captureLayers called with a removed parent");
         return NAME_NOT_FOUND;
     }
@@ -4949,17 +5309,25 @@
     Rect crop(sourceCrop);
     if (sourceCrop.width() <= 0) {
         crop.left = 0;
-        crop.right = parent->getCurrentState().active.w;
+        crop.right = parent->getActiveWidth(parent->getCurrentState());
     }
 
     if (sourceCrop.height() <= 0) {
         crop.top = 0;
-        crop.bottom = parent->getCurrentState().active.h;
+        crop.bottom = parent->getActiveHeight(parent->getCurrentState());
     }
 
     int32_t reqWidth = crop.width() * frameScale;
     int32_t reqHeight = crop.height() * frameScale;
 
+    // really small crop or frameScale
+    if (reqWidth <= 0) {
+        reqWidth = 1;
+    }
+    if (reqHeight <= 0) {
+        reqHeight = 1;
+    }
+
     LayerRenderArea renderArea(this, parent, crop, reqWidth, reqHeight, childrenOnly);
 
     auto traverseLayers = [parent, childrenOnly](const LayerVector::Visitor& visitor) {
@@ -4981,8 +5349,6 @@
                                              bool useIdentityTransform) {
     ATRACE_CALL();
 
-    renderArea.updateDimensions(mPrimaryDisplayOrientation);
-
     const uint32_t usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN |
             GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE;
     *outBuffer = new GraphicBuffer(renderArea.getReqWidth(), renderArea.getReqHeight(),
@@ -4999,7 +5365,7 @@
     const int uid = IPCThreadState::self()->getCallingUid();
     const bool forSystem = uid == AID_GRAPHICS || uid == AID_SYSTEM;
 
-    sp<LambdaMessage> message = new LambdaMessage([&]() {
+    sp<LambdaMessage> message = new LambdaMessage([&] {
         // If there is a refresh pending, bug out early and tell the binder thread to try again
         // after the refresh.
         if (mRefreshPending) {
@@ -5014,7 +5380,7 @@
         int fd = -1;
         {
             Mutex::Autolock _l(mStateLock);
-            renderArea.render([&]() {
+            renderArea.render([&] {
                 result = captureScreenImplLocked(renderArea, traverseLayers, (*outBuffer).get(),
                                                  useIdentityTransform, forSystem, &fd);
             });
@@ -5030,14 +5396,14 @@
 
     status_t result = postMessageAsync(message);
     if (result == NO_ERROR) {
-        captureCondition.wait(captureLock, [&]() { return captureResult; });
+        captureCondition.wait(captureLock, [&] { return captureResult; });
         while (*captureResult == EAGAIN) {
             captureResult.reset();
             result = postMessageAsync(message);
             if (result != NO_ERROR) {
                 return result;
             }
-            captureCondition.wait(captureLock, [&]() { return captureResult; });
+            captureCondition.wait(captureLock, [&] { return captureResult; });
         }
         result = *captureResult;
     }
@@ -5051,64 +5417,16 @@
 }
 
 void SurfaceFlinger::renderScreenImplLocked(const RenderArea& renderArea,
-                                            TraverseLayersFunction traverseLayers, bool yswap,
+                                            TraverseLayersFunction traverseLayers,
                                             bool useIdentityTransform) {
     ATRACE_CALL();
 
     auto& engine(getRenderEngine());
 
-    // get screen geometry
-    const auto raWidth = renderArea.getWidth();
-    const auto raHeight = renderArea.getHeight();
-
     const auto reqWidth = renderArea.getReqWidth();
     const auto reqHeight = renderArea.getReqHeight();
-    Rect sourceCrop = renderArea.getSourceCrop();
-
-    bool filtering = false;
-    if (mPrimaryDisplayOrientation & DisplayState::eOrientationSwapMask) {
-        filtering = static_cast<int32_t>(reqWidth) != raHeight ||
-                static_cast<int32_t>(reqHeight) != raWidth;
-    } else {
-        filtering = static_cast<int32_t>(reqWidth) != raWidth ||
-                static_cast<int32_t>(reqHeight) != raHeight;
-    }
-
-    // if a default or invalid sourceCrop is passed in, set reasonable values
-    if (sourceCrop.width() == 0 || sourceCrop.height() == 0 || !sourceCrop.isValid()) {
-        sourceCrop.setLeftTop(Point(0, 0));
-        sourceCrop.setRightBottom(Point(raWidth, raHeight));
-    } else if (mPrimaryDisplayOrientation != DisplayState::eOrientationDefault) {
-        Transform tr;
-        uint32_t flags = 0x00;
-        switch (mPrimaryDisplayOrientation) {
-            case DisplayState::eOrientation90:
-                flags = Transform::ROT_90;
-                break;
-            case DisplayState::eOrientation180:
-                flags = Transform::ROT_180;
-                break;
-            case DisplayState::eOrientation270:
-                flags = Transform::ROT_270;
-                break;
-        }
-        tr.set(flags, raWidth, raHeight);
-        sourceCrop = tr.transform(sourceCrop);
-    }
-
-    // ensure that sourceCrop is inside screen
-    if (sourceCrop.left < 0) {
-        ALOGE("Invalid crop rect: l = %d (< 0)", sourceCrop.left);
-    }
-    if (sourceCrop.right > raWidth) {
-        ALOGE("Invalid crop rect: r = %d (> %d)", sourceCrop.right, raWidth);
-    }
-    if (sourceCrop.top < 0) {
-        ALOGE("Invalid crop rect: t = %d (< 0)", sourceCrop.top);
-    }
-    if (sourceCrop.bottom > raHeight) {
-        ALOGE("Invalid crop rect: b = %d (> %d)", sourceCrop.bottom, raHeight);
-    }
+    const auto sourceCrop = renderArea.getSourceCrop();
+    const auto rotation = renderArea.getRotationFlags();
 
     // assume ColorMode::SRGB / RenderIntent::COLORIMETRIC
     engine.setOutputDataSpace(Dataspace::SRGB);
@@ -5117,40 +5435,8 @@
     // make sure to clear all GL error flags
     engine.checkErrors();
 
-    Transform::orientation_flags rotation = renderArea.getRotationFlags();
-    if (mPrimaryDisplayOrientation != DisplayState::eOrientationDefault) {
-        // convert hw orientation into flag presentation
-        // here inverse transform needed
-        uint8_t hw_rot_90  = 0x00;
-        uint8_t hw_flip_hv = 0x00;
-        switch (mPrimaryDisplayOrientation) {
-            case DisplayState::eOrientation90:
-                hw_rot_90 = Transform::ROT_90;
-                hw_flip_hv = Transform::ROT_180;
-                break;
-            case DisplayState::eOrientation180:
-                hw_flip_hv = Transform::ROT_180;
-                break;
-            case DisplayState::eOrientation270:
-                hw_rot_90  = Transform::ROT_90;
-                break;
-        }
-
-        // transform flags operation
-        // 1) flip H V if both have ROT_90 flag
-        // 2) XOR these flags
-        uint8_t rotation_rot_90  = rotation & Transform::ROT_90;
-        uint8_t rotation_flip_hv = rotation & Transform::ROT_180;
-        if (rotation_rot_90 & hw_rot_90) {
-            rotation_flip_hv = (~rotation_flip_hv) & Transform::ROT_180;
-        }
-        rotation = static_cast<Transform::orientation_flags>
-                   ((rotation_rot_90 ^ hw_rot_90) | (rotation_flip_hv ^ hw_flip_hv));
-    }
-
     // set-up our viewport
-    engine.setViewportAndProjection(reqWidth, reqHeight, sourceCrop, raHeight, yswap,
-                                    rotation);
+    engine.setViewportAndProjection(reqWidth, reqHeight, sourceCrop, rotation);
     engine.disableTexturing();
 
     const float alpha = RenderArea::getCaptureFillValue(renderArea.getCaptureFill());
@@ -5158,9 +5444,9 @@
     engine.clearWithColor(0, 0, 0, alpha);
 
     traverseLayers([&](Layer* layer) {
-        if (filtering) layer->setFiltering(true);
+        engine.setColorTransform(layer->getColorTransform());
         layer->draw(renderArea, useIdentityTransform);
-        if (filtering) layer->setFiltering(false);
+        engine.setColorTransform(mat4());
     });
 }
 
@@ -5188,7 +5474,7 @@
 
     // this binds the given EGLImage as a framebuffer for the
     // duration of this scope.
-    RE::BindNativeBufferAsFramebuffer bufferBond(getRenderEngine(), buffer);
+    renderengine::BindNativeBufferAsFramebuffer bufferBond(getRenderEngine(), buffer);
     if (bufferBond.getStatus() != NO_ERROR) {
         ALOGE("got ANWB binding error while taking screenshot");
         return INVALID_OPERATION;
@@ -5198,53 +5484,17 @@
     // via an FBO, which means we didn't have to create
     // an EGLSurface and therefore we're not
     // dependent on the context's EGLConfig.
-    renderScreenImplLocked(renderArea, traverseLayers, true, useIdentityTransform);
+    renderScreenImplLocked(renderArea, traverseLayers, useIdentityTransform);
 
-    if (DEBUG_SCREENSHOTS) {
+    base::unique_fd syncFd = getRenderEngine().flush();
+    if (syncFd < 0) {
         getRenderEngine().finish();
-        *outSyncFd = -1;
-
-        const auto reqWidth = renderArea.getReqWidth();
-        const auto reqHeight = renderArea.getReqHeight();
-
-        uint32_t* pixels = new uint32_t[reqWidth*reqHeight];
-        getRenderEngine().readPixels(0, 0, reqWidth, reqHeight, pixels);
-        checkScreenshot(reqWidth, reqHeight, reqWidth, pixels, traverseLayers);
-        delete [] pixels;
-    } else {
-        base::unique_fd syncFd = getRenderEngine().flush();
-        if (syncFd < 0) {
-            getRenderEngine().finish();
-        }
-        *outSyncFd = syncFd.release();
     }
+    *outSyncFd = syncFd.release();
 
     return NO_ERROR;
 }
 
-void SurfaceFlinger::checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
-                                     TraverseLayersFunction traverseLayers) {
-    if (DEBUG_SCREENSHOTS) {
-        for (size_t y = 0; y < h; y++) {
-            uint32_t const* p = (uint32_t const*)vaddr + y * s;
-            for (size_t x = 0; x < w; x++) {
-                if (p[x] != 0xFF000000) return;
-            }
-        }
-        ALOGE("*** we just took a black screenshot ***");
-
-        size_t i = 0;
-        traverseLayers([&](Layer* layer) {
-            const Layer::State& state(layer->getDrawingState());
-            ALOGE("%c index=%zu, name=%s, layerStack=%d, z=%d, visible=%d, flags=%x, alpha=%.3f",
-                  layer->isVisible() ? '+' : '-', i, layer->getName().string(),
-                  layer->getLayerStack(), state.z, layer->isVisible(), state.flags,
-                  static_cast<float>(state.color.a));
-            i++;
-        });
-    }
-}
-
 // ---------------------------------------------------------------------------
 
 void SurfaceFlinger::State::traverseInZOrder(const LayerVector::Visitor& visitor) const {
@@ -5255,22 +5505,17 @@
     layersSortedByZ.traverseInReverseZOrder(stateSet, visitor);
 }
 
-void SurfaceFlinger::traverseLayersInDisplay(const sp<const DisplayDevice>& hw, int32_t minLayerZ,
-                                             int32_t maxLayerZ,
+void SurfaceFlinger::traverseLayersInDisplay(const sp<const DisplayDevice>& display,
                                              const LayerVector::Visitor& visitor) {
     // We loop through the first level of layers without traversing,
-    // as we need to interpret min/max layer Z in the top level Z space.
+    // as we need to determine which layers belong to the requested display.
     for (const auto& layer : mDrawingState.layersSortedByZ) {
-        if (!layer->belongsToDisplay(hw->getLayerStack(), false)) {
+        if (!layer->belongsToDisplay(display->getLayerStack(), false)) {
             continue;
         }
-        const Layer::State& state(layer->getDrawingState());
         // relative layers are traversed in Layer::traverseInZOrder
-        if (state.zOrderRelativeOf != nullptr || state.z < minLayerZ || state.z > maxLayerZ) {
-            continue;
-        }
         layer->traverseInZOrder(LayerVector::StateSet::Drawing, [&](Layer* layer) {
-            if (!layer->belongsToDisplay(hw->getLayerStack(), false)) {
+            if (!layer->belongsToDisplay(display->getLayerStack(), false)) {
                 return;
             }
             if (!layer->isVisible()) {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 0148ab6..9f6eb21 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -45,6 +45,7 @@
 #include <gui/LayerState.h>
 
 #include <gui/OccupancyTracker.h>
+#include <gui/BufferQueue.h>
 
 #include <hardware/hwcomposer_defs.h>
 
@@ -54,22 +55,23 @@
 
 #include "Barrier.h"
 #include "DisplayDevice.h"
-#include "DispSync.h"
-#include "EventThread.h"
 #include "FrameTracker.h"
+#include "LayerBE.h"
 #include "LayerStats.h"
 #include "LayerVector.h"
-#include "MessageQueue.h"
+#include "StartPropertySetThread.h"
 #include "SurfaceInterceptor.h"
 #include "SurfaceTracing.h"
-#include "StartPropertySetThread.h"
-#include "TimeStats/TimeStats.h"
-#include "VSyncModulator.h"
 
 #include "DisplayHardware/HWC2.h"
 #include "DisplayHardware/HWComposer.h"
-
 #include "Effects/Daltonizer.h"
+#include "Scheduler/DispSync.h"
+#include "Scheduler/EventThread.h"
+#include "Scheduler/MessageQueue.h"
+#include "Scheduler/Scheduler.h"
+#include "Scheduler/VSyncModulator.h"
+#include "TimeStats/TimeStats.h"
 
 #include <map>
 #include <mutex>
@@ -99,12 +101,13 @@
 class Surface;
 class SurfaceFlingerBE;
 class VSyncSource;
+struct CompositionInfo;
 
 namespace impl {
 class EventThread;
 } // namespace impl
 
-namespace RE {
+namespace renderengine {
 class RenderEngine;
 }
 
@@ -114,6 +117,10 @@
 class VrFlinger;
 } // namespace dvr
 
+namespace surfaceflinger {
+class NativeWindowSurface;
+} // namespace surfaceflinger
+
 // ---------------------------------------------------------------------------
 
 enum {
@@ -130,18 +137,6 @@
     ENHANCED = 2,
 };
 
-// A thin interface to abstract creating instances of Surface (gui/Surface.h) to
-// use as a NativeWindow.
-class NativeWindowSurface {
-public:
-    virtual ~NativeWindowSurface();
-
-    // Gets the NativeWindow to use for the surface.
-    virtual sp<ANativeWindow> getNativeWindow() const = 0;
-
-    // Indicates that the surface should allocate its buffers now.
-    virtual void preallocateBuffers() = 0;
-};
 
 class SurfaceFlingerBE
 {
@@ -173,7 +168,7 @@
     const std::string mHwcServiceName; // "default" for real use, something else for testing.
 
     // constant members (no synchronization needed for access)
-    std::unique_ptr<RE::RenderEngine> mRenderEngine;
+    std::unique_ptr<renderengine::RenderEngine> mRenderEngine;
     EGLContext mEGLContext;
     EGLDisplay mEGLDisplay;
 
@@ -196,6 +191,9 @@
     nsecs_t mTotalTime;
     std::atomic<nsecs_t> mLastSwapTime;
 
+    // Synchronization fence from a GL composition.
+    sp<Fence> flushFence = Fence::NO_FENCE;
+
     // Double- vs. triple-buffering stats
     struct BufferingStats {
         BufferingStats()
@@ -223,6 +221,9 @@
     // use to differentiate callbacks from different hardware composer
     // instances. Each hardware composer instance gets a different sequence id.
     int32_t mComposerSequenceId;
+
+    std::unordered_map<int32_t, std::vector<CompositionInfo>> mCompositionInfo;
+    std::unordered_map<int32_t, std::vector<CompositionInfo>> mEndOfFrameCompositionInfo;
 };
 
 
@@ -279,13 +280,23 @@
     // FramebufferSurface
     static int64_t maxFrameBufferAcquiredBuffers;
 
-    // Indicate if platform supports color management on its
-    // wide-color display. This is typically found on devices
-    // with wide gamut (e.g. Display-P3) display.
-    // This also allows devices with wide-color displays that don't
-    // want to support color management to disable color management.
+    // Indicate if a device has wide color gamut display. This is typically
+    // found on devices with wide color gamut (e.g. Display-P3) display.
     static bool hasWideColorDisplay;
 
+    static int primaryDisplayOrientation;
+
+    // Indicate if device wants color management on its display.
+    static bool useColorManagement;
+
+    static bool useContextPriority;
+
+    // The data space and pixel format that SurfaceFlinger expects hardware composer
+    // to composite efficiently. Meaning under most scenarios, hardware composer
+    // will accept layers with the data space and pixel format.
+    static ui::Dataspace compositionDataSpace;
+    static ui::PixelFormat compositionPixelFormat;
+
     static char const* getServiceName() ANDROID_API {
         return "SurfaceFlinger";
     }
@@ -340,19 +351,19 @@
     // TODO: this should be made accessible only to HWComposer
     const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
 
-    RE::RenderEngine& getRenderEngine() const { return *getBE().mRenderEngine; }
+    renderengine::RenderEngine& getRenderEngine() const { return *getBE().mRenderEngine; }
 
     bool authenticateSurfaceTextureLocked(
         const sp<IGraphicBufferProducer>& bufferProducer) const;
 
-    int getPrimaryDisplayOrientation() const { return mPrimaryDisplayOrientation; }
-
 private:
     friend class Client;
     friend class DisplayEventConnection;
     friend class impl::EventThread;
     friend class Layer;
     friend class BufferLayer;
+    friend class BufferQueueLayer;
+    friend class BufferStateLayer;
     friend class MonitoredProducer;
 
     // For unit tests
@@ -410,7 +421,7 @@
     virtual sp<ISurfaceComposerClient> createConnection();
     virtual sp<ISurfaceComposerClient> createScopedConnection(const sp<IGraphicBufferProducer>& gbp);
     virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
-    virtual void destroyDisplay(const sp<IBinder>& display);
+    virtual void destroyDisplay(const sp<IBinder>& displayToken);
     virtual sp<IBinder> getBuiltInDisplay(int32_t id);
     virtual void setTransactionState(const Vector<ComposerState>& state,
             const Vector<DisplayState>& displays, uint32_t flags);
@@ -421,32 +432,30 @@
             std::vector<FrameEvent>* outSupported) const;
     virtual sp<IDisplayEventConnection> createDisplayEventConnection(
             ISurfaceComposer::VsyncSource vsyncSource = eVsyncSourceApp);
-    virtual status_t captureScreen(const sp<IBinder>& display, sp<GraphicBuffer>* outBuffer,
+    virtual status_t captureScreen(const sp<IBinder>& displayToken, sp<GraphicBuffer>* outBuffer,
                                    Rect sourceCrop, uint32_t reqWidth, uint32_t reqHeight,
-                                   int32_t minLayerZ, int32_t maxLayerZ, bool useIdentityTransform,
-                                   ISurfaceComposer::Rotation rotation);
+                                   bool useIdentityTransform, ISurfaceComposer::Rotation rotation);
     virtual status_t captureLayers(const sp<IBinder>& parentHandle, sp<GraphicBuffer>* outBuffer,
                                    const Rect& sourceCrop, float frameScale, bool childrenOnly);
-    virtual status_t getDisplayStats(const sp<IBinder>& display,
-            DisplayStatInfo* stats);
-    virtual status_t getDisplayViewport(const sp<IBinder>& display, Rect* outViewport);
-    virtual status_t getDisplayConfigs(const sp<IBinder>& display,
-            Vector<DisplayInfo>* configs);
-    virtual int getActiveConfig(const sp<IBinder>& display);
-    virtual status_t getDisplayColorModes(const sp<IBinder>& display,
-            Vector<ui::ColorMode>* configs);
-    virtual ui::ColorMode getActiveColorMode(const sp<IBinder>& display);
-    virtual status_t setActiveColorMode(const sp<IBinder>& display, ui::ColorMode colorMode);
-    virtual void setPowerMode(const sp<IBinder>& display, int mode);
-    virtual status_t setActiveConfig(const sp<IBinder>& display, int id);
+    virtual status_t getDisplayStats(const sp<IBinder>& displayToken, DisplayStatInfo* stats);
+    virtual status_t getDisplayConfigs(const sp<IBinder>& displayToken,
+                                       Vector<DisplayInfo>* configs);
+    virtual int getActiveConfig(const sp<IBinder>& displayToken);
+    virtual status_t getDisplayColorModes(const sp<IBinder>& displayToken,
+                                          Vector<ui::ColorMode>* configs);
+    virtual ui::ColorMode getActiveColorMode(const sp<IBinder>& displayToken);
+    virtual status_t setActiveColorMode(const sp<IBinder>& displayToken, ui::ColorMode colorMode);
+    virtual void setPowerMode(const sp<IBinder>& displayToken, int mode);
+    virtual status_t setActiveConfig(const sp<IBinder>& displayToken, int id);
     virtual status_t clearAnimationFrameStats();
     virtual status_t getAnimationFrameStats(FrameStats* outStats) const;
-    virtual status_t getHdrCapabilities(const sp<IBinder>& display,
-            HdrCapabilities* outCapabilities) const;
+    virtual status_t getHdrCapabilities(const sp<IBinder>& displayToken,
+                                        HdrCapabilities* outCapabilities) const;
     virtual status_t enableVSyncInjections(bool enable);
     virtual status_t injectVSync(nsecs_t when);
     virtual status_t getLayerDebugInfo(std::vector<LayerDebugInfo>* outLayers) const;
-
+    status_t getCompositionPreference(ui::Dataspace* outDataSpace,
+                                      ui::PixelFormat* outPixelFormat) const override;
 
     /* ------------------------------------------------------------------------
      * DeathRecipient interface
@@ -461,11 +470,11 @@
     /* ------------------------------------------------------------------------
      * HWC2::ComposerCallback / HWComposer::EventHandler interface
      */
-    void onVsyncReceived(int32_t sequenceId, hwc2_display_t display,
+    void onVsyncReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
                          int64_t timestamp) override;
-    void onHotplugReceived(int32_t sequenceId, hwc2_display_t display,
+    void onHotplugReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
                            HWC2::Connection connection) override;
-    void onRefreshReceived(int32_t sequenceId, hwc2_display_t display) override;
+    void onRefreshReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId) override;
 
     /* ------------------------------------------------------------------------
      * Message handling
@@ -480,16 +489,13 @@
     // called on the main thread in response to initializeDisplays()
     void onInitializeDisplays();
     // called on the main thread in response to setActiveConfig()
-    void setActiveConfigInternal(const sp<DisplayDevice>& hw, int mode);
+    void setActiveConfigInternal(const sp<DisplayDevice>& display, int mode);
     // called on the main thread in response to setPowerMode()
-    void setPowerModeInternal(const sp<DisplayDevice>& hw, int mode,
-                              bool stateLockHeld);
+    void setPowerModeInternal(const sp<DisplayDevice>& display, int mode, bool stateLockHeld);
 
     // Called on the main thread in response to setActiveColorMode()
-    void setActiveColorModeInternal(const sp<DisplayDevice>& hw,
-                                    ui::ColorMode colorMode,
-                                    ui::Dataspace dataSpace,
-                                    ui::RenderIntent renderIntent);
+    void setActiveColorModeInternal(const sp<DisplayDevice>& display, ui::ColorMode colorMode,
+                                    ui::Dataspace dataSpace, ui::RenderIntent renderIntent);
 
     // Returns whether the transaction actually modified any state
     bool handleMessageTransaction();
@@ -532,26 +538,29 @@
             int32_t windowType, int32_t ownerUid, sp<IBinder>* handle,
             sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent);
 
-    status_t createBufferLayer(const sp<Client>& client, const String8& name,
-            uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
-            sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
-            sp<Layer>* outLayer);
+    status_t createBufferQueueLayer(const sp<Client>& client, const String8& name, uint32_t w,
+                                    uint32_t h, uint32_t flags, PixelFormat& format,
+                                    sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
+                                    sp<Layer>* outLayer);
+
+    status_t createBufferStateLayer(const sp<Client>& client, const String8& name, uint32_t w,
+                                    uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
+                                    sp<Layer>* outLayer);
 
     status_t createColorLayer(const sp<Client>& client, const String8& name,
             uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
             sp<Layer>* outLayer);
 
+    status_t createContainerLayer(const sp<Client>& client, const String8& name,
+            uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
+            sp<Layer>* outLayer);
+
     String8 getUniqueLayerName(const String8& name);
 
     // called in response to the window-manager calling
     // ISurfaceComposerClient::destroySurface()
     status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
 
-    // called when all clients have released all their references to
-    // this layer meaning it is entirely safe to destroy all
-    // resources associated to this layer.
-    status_t onLayerDestroyed(const wp<Layer>& layer);
-
     // remove a layer from SurfaceFlinger immediately
     status_t removeLayer(const sp<Layer>& layer, bool topLevelOnly = false);
     status_t removeLayerLocked(const Mutex&, const sp<Layer>& layer, bool topLevelOnly = false);
@@ -570,7 +579,7 @@
     void startBootAnim();
 
     void renderScreenImplLocked(const RenderArea& renderArea, TraverseLayersFunction traverseLayers,
-                                bool yswap, bool useIdentityTransform);
+                                bool useIdentityTransform);
     status_t captureScreenCommon(RenderArea& renderArea, TraverseLayersFunction traverseLayers,
                                  sp<GraphicBuffer>* outBuffer,
                                  bool useIdentityTransform);
@@ -578,8 +587,8 @@
                                      TraverseLayersFunction traverseLayers,
                                      ANativeWindowBuffer* buffer, bool useIdentityTransform,
                                      bool forSystem, int* outSyncFd);
-    void traverseLayersInDisplay(const sp<const DisplayDevice>& display, int32_t minLayerZ,
-                                 int32_t maxLayerZ, const LayerVector::Visitor& visitor);
+    void traverseLayersInDisplay(const sp<const DisplayDevice>& display,
+                                 const LayerVector::Visitor& visitor);
 
     sp<StartPropertySetThread> mStartPropertySetThread = nullptr;
 
@@ -600,38 +609,33 @@
     // called when starting, or restarting after system_server death
     void initializeDisplays();
 
-    sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
-      Mutex::Autolock _l(mStateLock);
-      return getDisplayDeviceLocked(dpy);
+    sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& displayToken) const {
+        Mutex::Autolock _l(mStateLock);
+        return getDisplayDeviceLocked(displayToken);
     }
 
-    sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
-      Mutex::Autolock _l(mStateLock);
-      return getDisplayDeviceLocked(dpy);
+    sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& displayToken) {
+        Mutex::Autolock _l(mStateLock);
+        return getDisplayDeviceLocked(displayToken);
     }
 
     // NOTE: can only be called from the main thread or with mStateLock held
-    sp<const DisplayDevice> getDisplayDeviceLocked(const wp<IBinder>& dpy) const {
-        return mDisplays.valueFor(dpy);
+    sp<const DisplayDevice> getDisplayDeviceLocked(const wp<IBinder>& displayToken) const {
+        return const_cast<SurfaceFlinger*>(this)->getDisplayDeviceLocked(displayToken);
     }
 
     // NOTE: can only be called from the main thread or with mStateLock held
-    sp<DisplayDevice> getDisplayDeviceLocked(const wp<IBinder>& dpy) {
-        return mDisplays.valueFor(dpy);
+    sp<DisplayDevice> getDisplayDeviceLocked(const wp<IBinder>& displayToken) {
+        const auto it = mDisplays.find(displayToken);
+        return it == mDisplays.end() ? nullptr : it->second;
     }
 
     sp<const DisplayDevice> getDefaultDisplayDeviceLocked() const {
-        return getDisplayDeviceLocked(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
+        return const_cast<SurfaceFlinger*>(this)->getDefaultDisplayDeviceLocked();
     }
 
-    int32_t getDisplayType(const sp<IBinder>& display) {
-        if (!display.get()) return NAME_NOT_FOUND;
-        for (int i = 0; i < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES; ++i) {
-            if (display == mBuiltinDisplays[i]) {
-                return i;
-            }
-        }
-        return NAME_NOT_FOUND;
+    sp<DisplayDevice> getDefaultDisplayDeviceLocked() {
+        return getDisplayDeviceLocked(mDisplayTokens[DisplayDevice::DISPLAY_PRIMARY]);
     }
 
     // mark a region of a layer stack dirty. this updates the dirty
@@ -648,11 +652,11 @@
      * Compositing
      */
     void invalidateHwcGeometry();
-    void computeVisibleRegions(const sp<const DisplayDevice>& displayDevice,
-            Region& dirtyRegion, Region& opaqueRegion);
+    void computeVisibleRegions(const sp<const DisplayDevice>& display, Region& dirtyRegion,
+                               Region& opaqueRegion);
 
-    void preComposition(nsecs_t refreshStartTime);
-    void postComposition(nsecs_t refreshStartTime);
+    void preComposition();
+    void postComposition();
     void updateCompositorTiming(
             nsecs_t vsyncPhase, nsecs_t vsyncInterval, nsecs_t compositeTime,
             std::shared_ptr<FenceTime>& presentFenceTime);
@@ -661,37 +665,48 @@
             nsecs_t compositeToPresentLatency);
     void rebuildLayerStacks();
 
-    ui::Dataspace getBestDataspace(const sp<const DisplayDevice>& displayDevice,
+    ui::Dataspace getBestDataspace(const sp<const DisplayDevice>& display,
                                    ui::Dataspace* outHdrDataSpace) const;
 
     // Returns the appropriate ColorMode, Dataspace and RenderIntent for the
     // DisplayDevice. The function only returns the supported ColorMode,
     // Dataspace and RenderIntent.
-    void pickColorMode(const sp<DisplayDevice>& displayDevice,
-                       ui::ColorMode* outMode,
-                       ui::Dataspace* outDataSpace,
-                       ui::RenderIntent* outRenderIntent) const;
+    void pickColorMode(const sp<DisplayDevice>& display, ui::ColorMode* outMode,
+                       ui::Dataspace* outDataSpace, ui::RenderIntent* outRenderIntent) const;
 
-    void setUpHWComposer();
-    void doComposition();
-    void doDebugFlashRegions();
+    void calculateWorkingSet();
+    /*
+     * beginFrame - This function handles any pre-frame processing that needs to be
+     * prior to any CompositionInfo handling and is not dependent on data in
+     * CompositionInfo
+     */
+    void beginFrame(const sp<DisplayDevice>& display);
+    /* prepareFrame - This function will call into the DisplayDevice to prepare a
+     * frame after CompositionInfo has been programmed.   This provides a mechanism
+     * to prepare the hardware composer
+     */
+    void prepareFrame(const sp<DisplayDevice>& display);
+    void setUpHWComposer(const CompositionInfo& compositionInfo);
+    void doComposition(const sp<DisplayDevice>& display, bool repainEverything);
+    void doDebugFlashRegions(const sp<DisplayDevice>& display, bool repaintEverything);
     void doTracing(const char* where);
     void logLayerStats();
-    void doDisplayComposition(const sp<const DisplayDevice>& displayDevice, const Region& dirtyRegion);
+    void doDisplayComposition(const sp<const DisplayDevice>& display, const Region& dirtyRegion);
 
-    // compose surfaces for display hw. this fails if using GL and the surface
-    // has been destroyed and is no longer valid.
-    bool doComposeSurfaces(const sp<const DisplayDevice>& displayDevice);
+    // This fails if using GL and the surface has been destroyed.
+    bool doComposeSurfaces(const sp<const DisplayDevice>& display);
 
-    void postFramebuffer();
-    void drawWormhole(const sp<const DisplayDevice>& displayDevice, const Region& region) const;
+    void postFramebuffer(const sp<DisplayDevice>& display);
+    void postFrame();
+    void drawWormhole(const Region& region) const;
 
     /* ------------------------------------------------------------------------
      * Display management
      */
-    DisplayDevice::DisplayType determineDisplayType(hwc2_display_t display,
-            HWC2::Connection connection) const;
-    sp<DisplayDevice> setupNewDisplayDeviceInternal(const wp<IBinder>& display, int hwcId,
+    DisplayDevice::DisplayType determineDisplayType(hwc2_display_t hwcDisplayId,
+                                                    HWC2::Connection connection) const;
+    sp<DisplayDevice> setupNewDisplayDeviceInternal(const wp<IBinder>& displayToken,
+                                                    int32_t displayId,
                                                     const DisplayDeviceState& state,
                                                     const sp<DisplaySurface>& dispSurface,
                                                     const sp<IGraphicBufferProducer>& producer);
@@ -729,8 +744,6 @@
     void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
     bool startDdmConnection();
     void appendSfConfigString(String8& result) const;
-    void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
-                         TraverseLayersFunction traverseLayers);
 
     void logFrameStats();
 
@@ -741,9 +754,11 @@
     void recordBufferingStats(const char* layerName,
             std::vector<OccupancyTracker::Segment>&& history);
     void dumpBufferingStats(String8& result) const;
+    void dumpDisplayIdentificationData(String8& result) const;
     void dumpWideColorInfo(String8& result) const;
+    void dumpFrameCompositionInfo(String8& result) const;
     LayersProto dumpProtoInfo(LayerVector::StateSet stateSet) const;
-    LayersProto dumpVisibleLayersProtoInfo(int32_t hwcId) const;
+    LayersProto dumpVisibleLayersProtoInfo(const DisplayDevice& display) const;
 
     bool isLayerTripleBufferingDisabled() const {
         return this->mLayerTripleBufferingDisabled;
@@ -767,7 +782,7 @@
     // access must be protected by mStateLock
     mutable Mutex mStateLock;
     State mCurrentState{LayerVector::StateSet::Current};
-    volatile int32_t mTransactionFlags;
+    std::atomic<int32_t> mTransactionFlags{0};
     Condition mTransactionCV;
     bool mTransactionPending;
     bool mAnimTransactionPending;
@@ -786,8 +801,12 @@
     bool mLayersRemoved;
     bool mLayersAdded;
 
-    // access must be protected by mInvalidateLock
-    volatile int32_t mRepaintEverything;
+    std::atomic<bool> mRepaintEverything{false};
+
+    // helper methods
+    void configureHwcCommonData(const CompositionInfo& compositionInfo) const;
+    void configureDeviceComposition(const CompositionInfo& compositionInfo) const;
+    void configureSidebandComposition(const CompositionInfo& compositionInfo) const;
 
     // constant members (no synchronization needed for access)
     nsecs_t mBootTime;
@@ -799,7 +818,7 @@
     std::unique_ptr<VSyncSource> mSfEventThreadSource;
     std::unique_ptr<InjectVSyncSource> mVSyncInjector;
     std::unique_ptr<EventControlThread> mEventControlThread;
-    sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
+    sp<IBinder> mDisplayTokens[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
 
     VSyncModulator mVsyncModulator;
 
@@ -821,7 +840,7 @@
     BootStage mBootStage;
 
     struct HotplugEvent {
-        hwc2_display_t display;
+        hwc2_display_t hwcDisplayId;
         HWC2::Connection connection = HWC2::Connection::Invalid;
     };
     // protected by mStateLock
@@ -829,7 +848,7 @@
 
     // this may only be written from the main thread with mStateLock held
     // it may be read from other threads with mStateLock held
-    DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
+    std::map<wp<IBinder>, sp<DisplayDevice>> mDisplays;
 
     // don't use a lock for these, we don't care
     int mDebugRegion;
@@ -837,9 +856,9 @@
     int mDebugDisableHWC;
     int mDebugDisableTransformHint;
     volatile nsecs_t mDebugInSwapBuffers;
-    nsecs_t mLastSwapBufferTime;
     volatile nsecs_t mDebugInTransaction;
     nsecs_t mLastTransactionTime;
+    nsecs_t mPostFramebufferTime;
     bool mForceFullDamage;
     bool mPropagateBackpressure = true;
     std::unique_ptr<SurfaceInterceptor> mInterceptor =
@@ -848,6 +867,7 @@
     LayerStats mLayerStats;
     TimeStats& mTimeStats = TimeStats::getInstance();
     bool mUseHwcVirtualDisplays = false;
+    std::atomic<uint32_t> mFrameMissedCount{0};
 
     // Restrict layers to use two buffers in their bufferqueues.
     bool mLayerTripleBufferingDisabled = false;
@@ -855,8 +875,7 @@
     // these are thread safe
     mutable std::unique_ptr<MessageQueue> mEventQueue{std::make_unique<impl::MessageQueue>()};
     FrameTracker mAnimFrameTracker;
-    DispSync mPrimaryDispSync;
-    int mPrimaryDisplayOrientation = DisplayState::eOrientationDefault;
+    std::unique_ptr<DispSync> mPrimaryDispSync;
 
     // protected by mDestroyedLayerLock;
     mutable Mutex mDestroyedLayerLock;
@@ -866,6 +885,7 @@
     Mutex mHWVsyncLock;
     bool mPrimaryHWVsyncEnabled;
     bool mHWVsyncAvailable;
+    nsecs_t mRefreshStartTime;
 
     std::atomic<bool> mRefreshPending{false};
 
@@ -907,10 +927,16 @@
     CreateBufferQueueFunction mCreateBufferQueue;
 
     using CreateNativeWindowSurfaceFunction =
-            std::function<std::unique_ptr<NativeWindowSurface>(const sp<IGraphicBufferProducer>&)>;
+            std::function<std::unique_ptr<surfaceflinger::NativeWindowSurface>(
+                    const sp<IGraphicBufferProducer>&)>;
     CreateNativeWindowSurfaceFunction mCreateNativeWindowSurface;
 
     SurfaceFlingerBE mBE;
+
+    bool mUseScheduler = false;
+    std::unique_ptr<Scheduler> mScheduler;
+    sp<Scheduler::ConnectionHandle> mAppConnectionHandle;
+    sp<Scheduler::ConnectionHandle> mSfConnectionHandle;
 };
 }; // namespace android
 
diff --git a/services/surfaceflinger/SurfaceFlingerFactory.cpp b/services/surfaceflinger/SurfaceFlingerFactory.cpp
new file mode 100644
index 0000000..b37d6f0
--- /dev/null
+++ b/services/surfaceflinger/SurfaceFlingerFactory.cpp
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SurfaceFlingerFactory.h"
+#include "SurfaceFlinger.h"
+
+namespace android::surfaceflinger {
+
+sp<SurfaceFlinger> createSurfaceFlinger() {
+    return new SurfaceFlinger();
+}
+
+} // namespace android::surfaceflinger
diff --git a/services/surfaceflinger/SurfaceFlingerFactory.h b/services/surfaceflinger/SurfaceFlingerFactory.h
new file mode 100644
index 0000000..65eb797
--- /dev/null
+++ b/services/surfaceflinger/SurfaceFlingerFactory.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cutils/compiler.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+
+class SurfaceFlinger;
+
+namespace surfaceflinger {
+
+ANDROID_API sp<SurfaceFlinger> createSurfaceFlinger();
+
+} // namespace surfaceflinger
+} // namespace android
diff --git a/services/surfaceflinger/SurfaceInterceptor.cpp b/services/surfaceflinger/SurfaceInterceptor.cpp
index 4596a21..57bda5a 100644
--- a/services/surfaceflinger/SurfaceInterceptor.cpp
+++ b/services/surfaceflinger/SurfaceInterceptor.cpp
@@ -30,6 +30,7 @@
 namespace android {
 
 // ----------------------------------------------------------------------------
+// TODO(marissaw): add new layer state values to SurfaceInterceptor
 
 SurfaceInterceptor::~SurfaceInterceptor() = default;
 
@@ -95,22 +96,24 @@
         const sp<const Layer>& layer)
 {
     Transaction* transaction(increment->mutable_transaction());
-    transaction->set_synchronous(layer->mTransactionFlags & BnSurfaceComposer::eSynchronous);
-    transaction->set_animation(layer->mTransactionFlags & BnSurfaceComposer::eAnimation);
+    const uint32_t layerFlags = layer->getTransactionFlags();
+    transaction->set_synchronous(layerFlags & BnSurfaceComposer::eSynchronous);
+    transaction->set_animation(layerFlags & BnSurfaceComposer::eAnimation);
 
     const int32_t layerId(getLayerId(layer));
-    addPositionLocked(transaction, layerId, layer->mCurrentState.active.transform.tx(),
-            layer->mCurrentState.active.transform.ty());
+    addPositionLocked(transaction, layerId, layer->mCurrentState.active_legacy.transform.tx(),
+                      layer->mCurrentState.active_legacy.transform.ty());
     addDepthLocked(transaction, layerId, layer->mCurrentState.z);
     addAlphaLocked(transaction, layerId, layer->mCurrentState.color.a);
-    addTransparentRegionLocked(transaction, layerId, layer->mCurrentState.activeTransparentRegion);
+    addTransparentRegionLocked(transaction, layerId,
+                               layer->mCurrentState.activeTransparentRegion_legacy);
     addLayerStackLocked(transaction, layerId, layer->mCurrentState.layerStack);
-    addCropLocked(transaction, layerId, layer->mCurrentState.crop);
-    if (layer->mCurrentState.barrierLayer != nullptr) {
-        addDeferTransactionLocked(transaction, layerId, layer->mCurrentState.barrierLayer.promote(),
-                layer->mCurrentState.frameNumber);
+    addCropLocked(transaction, layerId, layer->mCurrentState.crop_legacy);
+    if (layer->mCurrentState.barrierLayer_legacy != nullptr) {
+        addDeferTransactionLocked(transaction, layerId,
+                                  layer->mCurrentState.barrierLayer_legacy.promote(),
+                                  layer->mCurrentState.frameNumber_legacy);
     }
-    addFinalCropLocked(transaction, layerId, layer->mCurrentState.finalCrop);
     addOverrideScalingModeLocked(transaction, layerId, layer->getEffectiveScalingMode());
     addFlagsLocked(transaction, layerId, layer->mCurrentState.flags);
 }
@@ -122,10 +125,10 @@
     transaction->set_synchronous(false);
     transaction->set_animation(false);
 
-    addDisplaySurfaceLocked(transaction, display.displayId, display.surface);
-    addDisplayLayerStackLocked(transaction, display.displayId, display.layerStack);
-    addDisplaySizeLocked(transaction, display.displayId, display.width, display.height);
-    addDisplayProjectionLocked(transaction, display.displayId, display.orientation,
+    addDisplaySurfaceLocked(transaction, display.sequenceId, display.surface);
+    addDisplayLayerStackLocked(transaction, display.sequenceId, display.layerStack);
+    addDisplaySizeLocked(transaction, display.sequenceId, display.width, display.height);
+    addDisplayProjectionLocked(transaction, display.sequenceId, display.orientation,
             display.viewport, display.frame);
 }
 
@@ -177,10 +180,10 @@
 }
 
 DisplayChange* SurfaceInterceptor::createDisplayChangeLocked(Transaction* transaction,
-        int32_t displayId)
+        int32_t sequenceId)
 {
     DisplayChange* dispChange(transaction->add_display_change());
-    dispChange->set_id(displayId);
+    dispChange->set_id(sequenceId);
     return dispChange;
 }
 
@@ -286,15 +289,6 @@
     setProtoRectLocked(protoRect, rect);
 }
 
-void SurfaceInterceptor::addFinalCropLocked(Transaction* transaction, int32_t layerId,
-        const Rect& rect)
-{
-    SurfaceChange* change(createSurfaceChangeLocked(transaction, layerId));
-    FinalCropChange* finalCropChange(change->mutable_final_crop());
-    Rectangle* protoRect(finalCropChange->mutable_rectangle());
-    setProtoRectLocked(protoRect, rect);
-}
-
 void SurfaceInterceptor::addDeferTransactionLocked(Transaction* transaction, int32_t layerId,
         const sp<const Layer>& layer, uint64_t frameNumber)
 {
@@ -353,25 +347,23 @@
     if (state.what & layer_state_t::eLayerStackChanged) {
         addLayerStackLocked(transaction, layerId, state.layerStack);
     }
-    if (state.what & layer_state_t::eCropChanged) {
-        addCropLocked(transaction, layerId, state.crop);
+    if (state.what & layer_state_t::eCropChanged_legacy) {
+        addCropLocked(transaction, layerId, state.crop_legacy);
     }
-    if (state.what & layer_state_t::eDeferTransaction) {
+    if (state.what & layer_state_t::eDeferTransaction_legacy) {
         sp<Layer> otherLayer = nullptr;
-        if (state.barrierHandle != nullptr) {
-            otherLayer = static_cast<Layer::Handle*>(state.barrierHandle.get())->owner.promote();
-        } else if (state.barrierGbp != nullptr) {
-            auto const& gbp = state.barrierGbp;
+        if (state.barrierHandle_legacy != nullptr) {
+            otherLayer =
+                    static_cast<Layer::Handle*>(state.barrierHandle_legacy.get())->owner.promote();
+        } else if (state.barrierGbp_legacy != nullptr) {
+            auto const& gbp = state.barrierGbp_legacy;
             if (mFlinger->authenticateSurfaceTextureLocked(gbp)) {
                 otherLayer = (static_cast<MonitoredProducer*>(gbp.get()))->getLayer();
             } else {
                 ALOGE("Attempt to defer transaction to to an unrecognized GraphicBufferProducer");
             }
         }
-        addDeferTransactionLocked(transaction, layerId, otherLayer, state.frameNumber);
-    }
-    if (state.what & layer_state_t::eFinalCropChanged) {
-        addFinalCropLocked(transaction, layerId, state.finalCrop);
+        addDeferTransactionLocked(transaction, layerId, otherLayer, state.frameNumber_legacy);
     }
     if (state.what & layer_state_t::eOverrideScalingModeChanged) {
         addOverrideScalingModeLocked(transaction, layerId, state.overrideScalingMode);
@@ -379,19 +371,19 @@
 }
 
 void SurfaceInterceptor::addDisplayChangesLocked(Transaction* transaction,
-        const DisplayState& state, int32_t displayId)
+        const DisplayState& state, int32_t sequenceId)
 {
     if (state.what & DisplayState::eSurfaceChanged) {
-        addDisplaySurfaceLocked(transaction, displayId, state.surface);
+        addDisplaySurfaceLocked(transaction, sequenceId, state.surface);
     }
     if (state.what & DisplayState::eLayerStackChanged) {
-        addDisplayLayerStackLocked(transaction, displayId, state.layerStack);
+        addDisplayLayerStackLocked(transaction, sequenceId, state.layerStack);
     }
     if (state.what & DisplayState::eDisplaySizeChanged) {
-        addDisplaySizeLocked(transaction, displayId, state.width, state.height);
+        addDisplaySizeLocked(transaction, sequenceId, state.width, state.height);
     }
     if (state.what & DisplayState::eDisplayProjectionChanged) {
-        addDisplayProjectionLocked(transaction, displayId, state.orientation, state.viewport,
+        addDisplayProjectionLocked(transaction, sequenceId, state.orientation, state.viewport,
                 state.frame);
     }
 }
@@ -411,7 +403,7 @@
         ssize_t dpyIdx = displays.indexOfKey(disp.token);
         if (dpyIdx >= 0) {
             const DisplayDeviceState& dispState(displays.valueAt(dpyIdx));
-            addDisplayChangesLocked(transaction, disp, dispState.displayId);
+            addDisplayChangesLocked(transaction, disp, dispState.sequenceId);
         }
     }
 }
@@ -422,8 +414,8 @@
     SurfaceCreation* creation(increment->mutable_surface_creation());
     creation->set_id(getLayerId(layer));
     creation->set_name(getLayerName(layer));
-    creation->set_w(layer->mCurrentState.active.w);
-    creation->set_h(layer->mCurrentState.active.h);
+    creation->set_w(layer->mCurrentState.active_legacy.w);
+    creation->set_h(layer->mCurrentState.active_legacy.h);
 }
 
 void SurfaceInterceptor::addSurfaceDeletionLocked(Increment* increment,
@@ -448,7 +440,7 @@
     event->set_when(timestamp);
 }
 
-void SurfaceInterceptor::addDisplaySurfaceLocked(Transaction* transaction, int32_t displayId,
+void SurfaceInterceptor::addDisplaySurfaceLocked(Transaction* transaction, int32_t sequenceId,
         const sp<const IGraphicBufferProducer>& surface)
 {
     if (surface == nullptr) {
@@ -457,7 +449,7 @@
     uint64_t bufferQueueId = 0;
     status_t err(surface->getUniqueId(&bufferQueueId));
     if (err == NO_ERROR) {
-        DisplayChange* dispChange(createDisplayChangeLocked(transaction, displayId));
+        DisplayChange* dispChange(createDisplayChangeLocked(transaction, sequenceId));
         DispSurfaceChange* surfaceChange(dispChange->mutable_surface());
         surfaceChange->set_buffer_queue_id(bufferQueueId);
         surfaceChange->set_buffer_queue_name(surface->getConsumerName().string());
@@ -469,26 +461,26 @@
 }
 
 void SurfaceInterceptor::addDisplayLayerStackLocked(Transaction* transaction,
-        int32_t displayId, uint32_t layerStack)
+        int32_t sequenceId, uint32_t layerStack)
 {
-    DisplayChange* dispChange(createDisplayChangeLocked(transaction, displayId));
+    DisplayChange* dispChange(createDisplayChangeLocked(transaction, sequenceId));
     LayerStackChange* layerStackChange(dispChange->mutable_layer_stack());
     layerStackChange->set_layer_stack(layerStack);
 }
 
-void SurfaceInterceptor::addDisplaySizeLocked(Transaction* transaction, int32_t displayId,
+void SurfaceInterceptor::addDisplaySizeLocked(Transaction* transaction, int32_t sequenceId,
         uint32_t w, uint32_t h)
 {
-    DisplayChange* dispChange(createDisplayChangeLocked(transaction, displayId));
+    DisplayChange* dispChange(createDisplayChangeLocked(transaction, sequenceId));
     SizeChange* sizeChange(dispChange->mutable_size());
     sizeChange->set_w(w);
     sizeChange->set_h(h);
 }
 
 void SurfaceInterceptor::addDisplayProjectionLocked(Transaction* transaction,
-        int32_t displayId, int32_t orientation, const Rect& viewport, const Rect& frame)
+        int32_t sequenceId, int32_t orientation, const Rect& viewport, const Rect& frame)
 {
-    DisplayChange* dispChange(createDisplayChangeLocked(transaction, displayId));
+    DisplayChange* dispChange(createDisplayChangeLocked(transaction, sequenceId));
     ProjectionChange* projectionChange(dispChange->mutable_projection());
     projectionChange->set_orientation(orientation);
     Rectangle* viewportRect(projectionChange->mutable_viewport());
@@ -501,22 +493,22 @@
         const DisplayDeviceState& info)
 {
     DisplayCreation* creation(increment->mutable_display_creation());
-    creation->set_id(info.displayId);
+    creation->set_id(info.sequenceId);
     creation->set_name(info.displayName);
     creation->set_type(info.type);
     creation->set_is_secure(info.isSecure);
 }
 
-void SurfaceInterceptor::addDisplayDeletionLocked(Increment* increment, int32_t displayId) {
+void SurfaceInterceptor::addDisplayDeletionLocked(Increment* increment, int32_t sequenceId) {
     DisplayDeletion* deletion(increment->mutable_display_deletion());
-    deletion->set_id(displayId);
+    deletion->set_id(sequenceId);
 }
 
-void SurfaceInterceptor::addPowerModeUpdateLocked(Increment* increment, int32_t displayId,
+void SurfaceInterceptor::addPowerModeUpdateLocked(Increment* increment, int32_t sequenceId,
         int32_t mode)
 {
     PowerModeUpdate* powerModeUpdate(increment->mutable_power_mode_update());
-    powerModeUpdate->set_id(displayId);
+    powerModeUpdate->set_id(sequenceId);
     powerModeUpdate->set_mode(mode);
 }
 
@@ -579,22 +571,22 @@
     addDisplayCreationLocked(createTraceIncrementLocked(), info);
 }
 
-void SurfaceInterceptor::saveDisplayDeletion(int32_t displayId) {
+void SurfaceInterceptor::saveDisplayDeletion(int32_t sequenceId) {
     if (!mEnabled) {
         return;
     }
     ATRACE_CALL();
     std::lock_guard<std::mutex> protoGuard(mTraceMutex);
-    addDisplayDeletionLocked(createTraceIncrementLocked(), displayId);
+    addDisplayDeletionLocked(createTraceIncrementLocked(), sequenceId);
 }
 
-void SurfaceInterceptor::savePowerModeUpdate(int32_t displayId, int32_t mode) {
+void SurfaceInterceptor::savePowerModeUpdate(int32_t sequenceId, int32_t mode) {
     if (!mEnabled) {
         return;
     }
     ATRACE_CALL();
     std::lock_guard<std::mutex> protoGuard(mTraceMutex);
-    addPowerModeUpdateLocked(createTraceIncrementLocked(), displayId, mode);
+    addPowerModeUpdateLocked(createTraceIncrementLocked(), sequenceId, mode);
 }
 
 } // namespace impl
diff --git a/services/surfaceflinger/SurfaceInterceptor.h b/services/surfaceflinger/SurfaceInterceptor.h
index 96defcc..394b99b 100644
--- a/services/surfaceflinger/SurfaceInterceptor.h
+++ b/services/surfaceflinger/SurfaceInterceptor.h
@@ -66,8 +66,8 @@
 
     // Intercept display data
     virtual void saveDisplayCreation(const DisplayDeviceState& info) = 0;
-    virtual void saveDisplayDeletion(int32_t displayId) = 0;
-    virtual void savePowerModeUpdate(int32_t displayId, int32_t mode) = 0;
+    virtual void saveDisplayDeletion(int32_t sequenceId) = 0;
+    virtual void savePowerModeUpdate(int32_t sequenceId, int32_t mode) = 0;
     virtual void saveVSyncEvent(nsecs_t timestamp) = 0;
 };
 
@@ -101,8 +101,8 @@
 
     // Intercept display data
     void saveDisplayCreation(const DisplayDeviceState& info) override;
-    void saveDisplayDeletion(int32_t displayId) override;
-    void savePowerModeUpdate(int32_t displayId, int32_t mode) override;
+    void saveDisplayDeletion(int32_t sequenceId) override;
+    void savePowerModeUpdate(int32_t sequenceId, int32_t mode) override;
     void saveVSyncEvent(nsecs_t timestamp) override;
 
 private:
@@ -127,8 +127,8 @@
             uint32_t height, uint64_t frameNumber);
     void addVSyncUpdateLocked(Increment* increment, nsecs_t timestamp);
     void addDisplayCreationLocked(Increment* increment, const DisplayDeviceState& info);
-    void addDisplayDeletionLocked(Increment* increment, int32_t displayId);
-    void addPowerModeUpdateLocked(Increment* increment, int32_t displayId, int32_t mode);
+    void addDisplayDeletionLocked(Increment* increment, int32_t sequenceId);
+    void addPowerModeUpdateLocked(Increment* increment, int32_t sequenceId, int32_t mode);
 
     // Add surface transactions to the trace
     SurfaceChange* createSurfaceChangeLocked(Transaction* transaction, int32_t layerId);
@@ -146,7 +146,6 @@
     void addCropLocked(Transaction* transaction, int32_t layerId, const Rect& rect);
     void addDeferTransactionLocked(Transaction* transaction, int32_t layerId,
             const sp<const Layer>& layer, uint64_t frameNumber);
-    void addFinalCropLocked(Transaction* transaction, int32_t layerId, const Rect& rect);
     void addOverrideScalingModeLocked(Transaction* transaction, int32_t layerId,
             int32_t overrideScalingMode);
     void addSurfaceChangesLocked(Transaction* transaction, const layer_state_t& state);
@@ -155,17 +154,17 @@
             const Vector<DisplayState>& changedDisplays, uint32_t transactionFlags);
 
     // Add display transactions to the trace
-    DisplayChange* createDisplayChangeLocked(Transaction* transaction, int32_t displayId);
-    void addDisplaySurfaceLocked(Transaction* transaction, int32_t displayId,
+    DisplayChange* createDisplayChangeLocked(Transaction* transaction, int32_t sequenceId);
+    void addDisplaySurfaceLocked(Transaction* transaction, int32_t sequenceId,
             const sp<const IGraphicBufferProducer>& surface);
-    void addDisplayLayerStackLocked(Transaction* transaction, int32_t displayId,
+    void addDisplayLayerStackLocked(Transaction* transaction, int32_t sequenceId,
             uint32_t layerStack);
-    void addDisplaySizeLocked(Transaction* transaction, int32_t displayId, uint32_t w,
+    void addDisplaySizeLocked(Transaction* transaction, int32_t sequenceId, uint32_t w,
             uint32_t h);
-    void addDisplayProjectionLocked(Transaction* transaction, int32_t displayId,
+    void addDisplayProjectionLocked(Transaction* transaction, int32_t sequenceId,
             int32_t orientation, const Rect& viewport, const Rect& frame);
     void addDisplayChangesLocked(Transaction* transaction,
-            const DisplayState& state, int32_t displayId);
+            const DisplayState& state, int32_t sequenceId);
 
 
     bool mEnabled {false};
diff --git a/services/surfaceflinger/TimeStats/TimeStats.cpp b/services/surfaceflinger/TimeStats/TimeStats.cpp
index d4f1e29..0bc1c0a 100644
--- a/services/surfaceflinger/TimeStats/TimeStats.cpp
+++ b/services/surfaceflinger/TimeStats/TimeStats.cpp
@@ -32,11 +32,8 @@
 namespace android {
 
 TimeStats& TimeStats::getInstance() {
-    static std::unique_ptr<TimeStats> sInstance;
-    static std::once_flag sOnceFlag;
-
-    std::call_once(sOnceFlag, [] { sInstance.reset(new TimeStats); });
-    return *sInstance.get();
+    static TimeStats sInstance;
+    return sInstance;
 }
 
 void TimeStats::parseArgs(bool asProto, const Vector<String16>& args, size_t& index,
@@ -109,7 +106,7 @@
 bool TimeStats::recordReadyLocked(const std::string& layerName, TimeRecord* timeRecord) {
     if (!timeRecord->ready) {
         ALOGV("[%s]-[%" PRIu64 "]-presentFence is still not received", layerName.c_str(),
-              timeRecord->frameNumber);
+              timeRecord->frameTime.frameNumber);
         return false;
     }
 
@@ -118,11 +115,11 @@
             return false;
         }
         if (timeRecord->acquireFence->getSignalTime() != Fence::SIGNAL_TIME_INVALID) {
-            timeRecord->acquireTime = timeRecord->acquireFence->getSignalTime();
+            timeRecord->frameTime.acquireTime = timeRecord->acquireFence->getSignalTime();
             timeRecord->acquireFence = nullptr;
         } else {
             ALOGV("[%s]-[%" PRIu64 "]-acquireFence signal time is invalid", layerName.c_str(),
-                  timeRecord->frameNumber);
+                  timeRecord->frameTime.frameNumber);
         }
     }
 
@@ -131,11 +128,11 @@
             return false;
         }
         if (timeRecord->presentFence->getSignalTime() != Fence::SIGNAL_TIME_INVALID) {
-            timeRecord->presentTime = timeRecord->presentFence->getSignalTime();
+            timeRecord->frameTime.presentTime = timeRecord->presentFence->getSignalTime();
             timeRecord->presentFence = nullptr;
         } else {
             ALOGV("[%s]-[%" PRIu64 "]-presentFence signal time invalid", layerName.c_str(),
-                  timeRecord->frameNumber);
+                  timeRecord->frameTime.frameNumber);
         }
     }
 
@@ -172,48 +169,53 @@
     while (!timeRecords.empty()) {
         if (!recordReadyLocked(layerName, &timeRecords[0])) break;
         ALOGV("[%s]-[%" PRIu64 "]-presentFenceTime[%" PRId64 "]", layerName.c_str(),
-              timeRecords[0].frameNumber, timeRecords[0].presentTime);
+              timeRecords[0].frameTime.frameNumber, timeRecords[0].frameTime.presentTime);
 
         if (prevTimeRecord.ready) {
             if (!timeStats.stats.count(layerName)) {
                 timeStats.stats[layerName].layerName = layerName;
                 timeStats.stats[layerName].packageName = getPackageName(layerName);
-                timeStats.stats[layerName].statsStart = static_cast<int64_t>(std::time(0));
             }
             TimeStatsHelper::TimeStatsLayer& timeStatsLayer = timeStats.stats[layerName];
             timeStatsLayer.totalFrames++;
+            timeStatsLayer.droppedFrames += layerRecord.droppedFrames;
+            layerRecord.droppedFrames = 0;
 
-            const int32_t postToPresentMs =
-                    msBetween(timeRecords[0].postTime, timeRecords[0].presentTime);
+            const int32_t postToAcquireMs = msBetween(timeRecords[0].frameTime.postTime,
+                                                      timeRecords[0].frameTime.acquireTime);
+            ALOGV("[%s]-[%" PRIu64 "]-post2acquire[%d]", layerName.c_str(),
+                  timeRecords[0].frameTime.frameNumber, postToAcquireMs);
+            timeStatsLayer.deltas["post2acquire"].insert(postToAcquireMs);
+
+            const int32_t postToPresentMs = msBetween(timeRecords[0].frameTime.postTime,
+                                                      timeRecords[0].frameTime.presentTime);
             ALOGV("[%s]-[%" PRIu64 "]-post2present[%d]", layerName.c_str(),
-                  timeRecords[0].frameNumber, postToPresentMs);
+                  timeRecords[0].frameTime.frameNumber, postToPresentMs);
             timeStatsLayer.deltas["post2present"].insert(postToPresentMs);
 
-            const int32_t acquireToPresentMs =
-                    msBetween(timeRecords[0].acquireTime, timeRecords[0].presentTime);
+            const int32_t acquireToPresentMs = msBetween(timeRecords[0].frameTime.acquireTime,
+                                                         timeRecords[0].frameTime.presentTime);
             ALOGV("[%s]-[%" PRIu64 "]-acquire2present[%d]", layerName.c_str(),
-                  timeRecords[0].frameNumber, acquireToPresentMs);
+                  timeRecords[0].frameTime.frameNumber, acquireToPresentMs);
             timeStatsLayer.deltas["acquire2present"].insert(acquireToPresentMs);
 
-            const int32_t latchToPresentMs =
-                    msBetween(timeRecords[0].latchTime, timeRecords[0].presentTime);
+            const int32_t latchToPresentMs = msBetween(timeRecords[0].frameTime.latchTime,
+                                                       timeRecords[0].frameTime.presentTime);
             ALOGV("[%s]-[%" PRIu64 "]-latch2present[%d]", layerName.c_str(),
-                  timeRecords[0].frameNumber, latchToPresentMs);
+                  timeRecords[0].frameTime.frameNumber, latchToPresentMs);
             timeStatsLayer.deltas["latch2present"].insert(latchToPresentMs);
 
-            const int32_t desiredToPresentMs =
-                    msBetween(timeRecords[0].desiredTime, timeRecords[0].presentTime);
+            const int32_t desiredToPresentMs = msBetween(timeRecords[0].frameTime.desiredTime,
+                                                         timeRecords[0].frameTime.presentTime);
             ALOGV("[%s]-[%" PRIu64 "]-desired2present[%d]", layerName.c_str(),
-                  timeRecords[0].frameNumber, desiredToPresentMs);
+                  timeRecords[0].frameTime.frameNumber, desiredToPresentMs);
             timeStatsLayer.deltas["desired2present"].insert(desiredToPresentMs);
 
-            const int32_t presentToPresentMs =
-                    msBetween(prevTimeRecord.presentTime, timeRecords[0].presentTime);
+            const int32_t presentToPresentMs = msBetween(prevTimeRecord.frameTime.presentTime,
+                                                         timeRecords[0].frameTime.presentTime);
             ALOGV("[%s]-[%" PRIu64 "]-present2present[%d]", layerName.c_str(),
-                  timeRecords[0].frameNumber, presentToPresentMs);
+                  timeRecords[0].frameTime.frameNumber, presentToPresentMs);
             timeStatsLayer.deltas["present2present"].insert(presentToPresentMs);
-
-            timeStats.stats[layerName].statsEnd = static_cast<int64_t>(std::time(0));
         }
         prevTimeRecord = timeRecords[0];
         timeRecords.pop_front();
@@ -225,12 +227,12 @@
     // This regular expression captures the following layer names for instance:
     // 1) StatusBat#0
     // 2) NavigationBar#1
-    // 3) com.*#0
-    // 4) SurfaceView - com.*#0
-    // Using [-\\s\t]+ for the conjunction part between SurfaceView and com.* is
-    // a bit more robust in case there's a slight change.
+    // 3) co(m).*#0
+    // 4) SurfaceView - co(m).*#0
+    // Using [-\\s\t]+ for the conjunction part between SurfaceView and co(m).*
+    // is a bit more robust in case there's a slight change.
     // The layer name would only consist of . / $ _ 0-9 a-z A-Z in most cases.
-    std::regex re("(((SurfaceView[-\\s\\t]+)?com\\.[./$\\w]+)|((Status|Navigation)Bar))#\\d+");
+    std::regex re("(((SurfaceView[-\\s\\t]+)?com?\\.[./$\\w]+)|((Status|Navigation)Bar))#\\d+");
     return std::regex_match(layerName.begin(), layerName.end(), re);
 }
 
@@ -257,9 +259,12 @@
     // ready at the queueBuffer stage. In this case, acquireTime should be given
     // a default value as postTime.
     TimeRecord timeRecord = {
-            .frameNumber = frameNumber,
-            .postTime = postTime,
-            .acquireTime = postTime,
+            .frameTime =
+                    {
+                            .frameNumber = frameNumber,
+                            .postTime = postTime,
+                            .acquireTime = postTime,
+                    },
     };
     layerRecord.timeRecords.push_back(timeRecord);
     if (layerRecord.waitData < 0 ||
@@ -278,8 +283,8 @@
     if (!timeStatsTracker.count(layerName)) return;
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     TimeRecord& timeRecord = layerRecord.timeRecords[layerRecord.waitData];
-    if (timeRecord.frameNumber == frameNumber) {
-        timeRecord.latchTime = latchTime;
+    if (timeRecord.frameTime.frameNumber == frameNumber) {
+        timeRecord.frameTime.latchTime = latchTime;
     }
 }
 
@@ -295,8 +300,8 @@
     if (!timeStatsTracker.count(layerName)) return;
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     TimeRecord& timeRecord = layerRecord.timeRecords[layerRecord.waitData];
-    if (timeRecord.frameNumber == frameNumber) {
-        timeRecord.desiredTime = desiredTime;
+    if (timeRecord.frameTime.frameNumber == frameNumber) {
+        timeRecord.frameTime.desiredTime = desiredTime;
     }
 }
 
@@ -312,8 +317,8 @@
     if (!timeStatsTracker.count(layerName)) return;
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     TimeRecord& timeRecord = layerRecord.timeRecords[layerRecord.waitData];
-    if (timeRecord.frameNumber == frameNumber) {
-        timeRecord.acquireTime = acquireTime;
+    if (timeRecord.frameTime.frameNumber == frameNumber) {
+        timeRecord.frameTime.acquireTime = acquireTime;
     }
 }
 
@@ -329,7 +334,7 @@
     if (!timeStatsTracker.count(layerName)) return;
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     TimeRecord& timeRecord = layerRecord.timeRecords[layerRecord.waitData];
-    if (timeRecord.frameNumber == frameNumber) {
+    if (timeRecord.frameTime.frameNumber == frameNumber) {
         timeRecord.acquireFence = acquireFence;
     }
 }
@@ -346,8 +351,8 @@
     if (!timeStatsTracker.count(layerName)) return;
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     TimeRecord& timeRecord = layerRecord.timeRecords[layerRecord.waitData];
-    if (timeRecord.frameNumber == frameNumber) {
-        timeRecord.presentTime = presentTime;
+    if (timeRecord.frameTime.frameNumber == frameNumber) {
+        timeRecord.frameTime.presentTime = presentTime;
         timeRecord.ready = true;
         layerRecord.waitData++;
     }
@@ -367,7 +372,7 @@
     if (!timeStatsTracker.count(layerName)) return;
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     TimeRecord& timeRecord = layerRecord.timeRecords[layerRecord.waitData];
-    if (timeRecord.frameNumber == frameNumber) {
+    if (timeRecord.frameTime.frameNumber == frameNumber) {
         timeRecord.presentFence = presentFence;
         timeRecord.ready = true;
         layerRecord.waitData++;
@@ -400,6 +405,7 @@
     layerRecord.timeRecords.clear();
     layerRecord.prevTimeRecord.ready = false;
     layerRecord.waitData = -1;
+    layerRecord.droppedFrames = 0;
 }
 
 void TimeStats::removeTimeRecord(const std::string& layerName, uint64_t frameNumber) {
@@ -413,14 +419,15 @@
     LayerRecord& layerRecord = timeStatsTracker[layerName];
     size_t removeAt = 0;
     for (const TimeRecord& record : layerRecord.timeRecords) {
-        if (record.frameNumber == frameNumber) break;
+        if (record.frameTime.frameNumber == frameNumber) break;
         removeAt++;
     }
     if (removeAt == layerRecord.timeRecords.size()) return;
     layerRecord.timeRecords.erase(layerRecord.timeRecords.begin() + removeAt);
     if (layerRecord.waitData > static_cast<int32_t>(removeAt)) {
-        --layerRecord.waitData;
+        layerRecord.waitData--;
     }
+    layerRecord.droppedFrames++;
 }
 
 void TimeStats::enable() {
diff --git a/services/surfaceflinger/TimeStats/TimeStats.h b/services/surfaceflinger/TimeStats/TimeStats.h
index 8318210..5ab3934 100644
--- a/services/surfaceflinger/TimeStats/TimeStats.h
+++ b/services/surfaceflinger/TimeStats/TimeStats.h
@@ -40,14 +40,18 @@
     // static const size_t MAX_NUM_LAYER_RECORDS = 200;
     static const size_t MAX_NUM_TIME_RECORDS = 64;
 
-    struct TimeRecord {
-        bool ready = false;
+    struct FrameTime {
         uint64_t frameNumber = 0;
         nsecs_t postTime = 0;
         nsecs_t latchTime = 0;
         nsecs_t acquireTime = 0;
         nsecs_t desiredTime = 0;
         nsecs_t presentTime = 0;
+    };
+
+    struct TimeRecord {
+        bool ready = false;
+        FrameTime frameTime;
         std::shared_ptr<FenceTime> acquireFence;
         std::shared_ptr<FenceTime> presentFence;
     };
@@ -57,6 +61,7 @@
         // specific frame are still not fully received. This is not waiting for
         // fences to signal, but rather waiting to receive those fences/timestamps.
         int32_t waitData = -1;
+        uint32_t droppedFrames = 0;
         TimeRecord prevTimeRecord;
         std::deque<TimeRecord> timeRecords;
     };
@@ -77,8 +82,11 @@
     void setPresentTime(const std::string& layerName, uint64_t frameNumber, nsecs_t presentTime);
     void setPresentFence(const std::string& layerName, uint64_t frameNumber,
                          const std::shared_ptr<FenceTime>& presentFence);
+    // On producer disconnect with BufferQueue.
     void onDisconnect(const std::string& layerName);
+    // When SF is cleaning up the queue, clear the LayerRecord as well.
     void clearLayerRecord(const std::string& layerName);
+    // If SF skips or rejects a buffer, remove the corresponding TimeRecord.
     void removeTimeRecord(const std::string& layerName, uint64_t frameNumber);
 
 private:
diff --git a/services/surfaceflinger/TimeStats/timestatsproto/TimeStatsHelper.cpp b/services/surfaceflinger/TimeStats/timestatsproto/TimeStatsHelper.cpp
index 21f3ef3..b7b2778 100644
--- a/services/surfaceflinger/TimeStats/timestatsproto/TimeStatsHelper.cpp
+++ b/services/surfaceflinger/TimeStats/timestatsproto/TimeStatsHelper.cpp
@@ -68,12 +68,11 @@
 }
 
 std::string TimeStatsHelper::TimeStatsLayer::toString() const {
-    std::string result = "";
+    std::string result = "\n";
     StringAppendF(&result, "layerName = %s\n", layerName.c_str());
     StringAppendF(&result, "packageName = %s\n", packageName.c_str());
-    StringAppendF(&result, "statsStart = %lld\n", static_cast<long long int>(statsStart));
-    StringAppendF(&result, "statsEnd = %lld\n", static_cast<long long int>(statsEnd));
-    StringAppendF(&result, "totalFrames= %d\n", totalFrames);
+    StringAppendF(&result, "totalFrames = %d\n", totalFrames);
+    StringAppendF(&result, "droppedFrames = %d\n", droppedFrames);
     auto iter = deltas.find("present2present");
     if (iter != deltas.end()) {
         StringAppendF(&result, "averageFPS = %.3f\n", 1000.0 / iter->second.averageTime());
@@ -90,10 +89,9 @@
     std::string result = "SurfaceFlinger TimeStats:\n";
     StringAppendF(&result, "statsStart = %lld\n", static_cast<long long int>(statsStart));
     StringAppendF(&result, "statsEnd = %lld\n", static_cast<long long int>(statsEnd));
-    StringAppendF(&result, "totalFrames= %d\n", totalFrames);
-    StringAppendF(&result, "missedFrames= %d\n", missedFrames);
-    StringAppendF(&result, "clientCompositionFrames= %d\n", clientCompositionFrames);
-    StringAppendF(&result, "TimeStats for each layer is as below:\n");
+    StringAppendF(&result, "totalFrames = %d\n", totalFrames);
+    StringAppendF(&result, "missedFrames = %d\n", missedFrames);
+    StringAppendF(&result, "clientCompositionFrames = %d\n", clientCompositionFrames);
     const auto dumpStats = generateDumpStats(maxLayers);
     for (auto& ele : dumpStats) {
         StringAppendF(&result, "%s", ele->toString().c_str());
@@ -106,15 +104,14 @@
     SFTimeStatsLayerProto layerProto;
     layerProto.set_layer_name(layerName);
     layerProto.set_package_name(packageName);
-    layerProto.set_stats_start(statsStart);
-    layerProto.set_stats_end(statsEnd);
     layerProto.set_total_frames(totalFrames);
+    layerProto.set_dropped_frames(droppedFrames);
     for (auto& ele : deltas) {
         SFTimeStatsDeltaProto* deltaProto = layerProto.add_deltas();
         deltaProto->set_delta_name(ele.first);
         for (auto& histEle : ele.second.hist) {
             SFTimeStatsHistogramBucketProto* histProto = deltaProto->add_histograms();
-            histProto->set_render_millis(histEle.first);
+            histProto->set_time_millis(histEle.first);
             histProto->set_frame_count(histEle.second);
         }
     }
diff --git a/services/surfaceflinger/TimeStats/timestatsproto/include/timestatsproto/TimeStatsHelper.h b/services/surfaceflinger/TimeStats/timestatsproto/include/timestatsproto/TimeStatsHelper.h
index 1798555..99c891b 100644
--- a/services/surfaceflinger/TimeStats/timestatsproto/include/timestatsproto/TimeStatsHelper.h
+++ b/services/surfaceflinger/TimeStats/timestatsproto/include/timestatsproto/TimeStatsHelper.h
@@ -42,9 +42,8 @@
     public:
         std::string layerName;
         std::string packageName;
-        int64_t statsStart = 0;
-        int64_t statsEnd = 0;
         int32_t totalFrames = 0;
+        int32_t droppedFrames = 0;
         std::unordered_map<std::string, Histogram> deltas;
 
         std::string toString() const;
diff --git a/services/surfaceflinger/TimeStats/timestatsproto/timestats.proto b/services/surfaceflinger/TimeStats/timestatsproto/timestats.proto
index f29fbd1..b8f38c2 100644
--- a/services/surfaceflinger/TimeStats/timestatsproto/timestats.proto
+++ b/services/surfaceflinger/TimeStats/timestatsproto/timestats.proto
@@ -20,46 +20,60 @@
 
 option optimize_for = LITE_RUNTIME;
 
+// //depot/google3/java/com/google/android/apps/graphics/stats/proto/
+// timestats.proto is based on this proto. Please only make valid protobuf
+// changes to these messages, and keep the other file in sync per Android
+// release. Please also do not include "option optimize_for = LITE_RUNTIME;" at
+// google3 side.
+
+// Next tag: 7
 message SFTimeStatsGlobalProto {
-  // The start & end timestamps in UTC as
-  // milliseconds since January 1, 1970
+  // The stats start time in UTC as seconds since January 1, 1970
   optional int64 stats_start = 1;
+  // The stats end time in UTC as seconds since January 1, 1970
   optional int64 stats_end = 2;
-  // Total frames
+  // Total number of frames presented during tracing period.
   optional int32 total_frames = 3;
   // Total missed frames of SurfaceFlinger.
   optional int32 missed_frames = 4;
   // Total frames fallback to client composition.
   optional int32 client_composition_frames = 5;
-
+  // Stats per layer. Apps could have multiple layers.
   repeated SFTimeStatsLayerProto stats = 6;
 }
 
+// Next tag: 8
 message SFTimeStatsLayerProto {
-  // The layer name
+  // The name of the visible view layer.
   optional string layer_name = 1;
-  // The package name
+  // The package name of the application owning this layer.
   optional string package_name = 2;
-  // The start & end timestamps in UTC as
-  // milliseconds since January 1, 1970
+  // The stats start time in UTC as seconds since January 1, 1970
   optional int64 stats_start = 3;
+  // The stats end time in UTC as seconds since January 1, 1970
   optional int64 stats_end = 4;
-  // Distinct frame count.
+  // Total number of frames presented during tracing period.
   optional int32 total_frames = 5;
-
+  // Total number of frames dropped by SurfaceFlinger.
+  optional int32 dropped_frames = 7;
+  // There are multiple timestamps tracked in SurfaceFlinger, and these are the
+  // histograms of deltas between different combinations of those timestamps.
   repeated SFTimeStatsDeltaProto deltas = 6;
 }
 
+// Next tag: 3
 message SFTimeStatsDeltaProto {
   // Name of the time interval
   optional string delta_name = 1;
-  // Histogram of the delta time
+  // Histogram of the delta time. There should be at most 85 buckets ranging
+  // from [0ms, 1ms) to [1000ms, infinity)
   repeated SFTimeStatsHistogramBucketProto histograms = 2;
 }
 
+// Next tag: 3
 message SFTimeStatsHistogramBucketProto {
-  // Lower bound of render time in milliseconds.
-  optional int32 render_millis = 1;
+  // Lower bound of time interval in milliseconds.
+  optional int32 time_millis = 1;
   // Number of frames in the bucket.
   optional int32 frame_count = 2;
 }
diff --git a/services/surfaceflinger/Transform.h b/services/surfaceflinger/Transform.h
deleted file mode 100644
index b11d057..0000000
--- a/services/surfaceflinger/Transform.h
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_TRANSFORM_H
-#define ANDROID_TRANSFORM_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <ui/Point.h>
-#include <ui/Rect.h>
-#include <math/vec2.h>
-#include <math/vec3.h>
-
-#include <gui/ISurfaceComposer.h>
-
-#include <hardware/hardware.h>
-
-namespace android {
-
-class Region;
-
-// ---------------------------------------------------------------------------
-
-class Transform
-{
-public:
-                    Transform();
-                    Transform(const Transform&  other);
-           explicit Transform(uint32_t orientation);
-                    ~Transform();
-
-            enum orientation_flags {
-                ROT_0   = 0x00000000,
-                FLIP_H  = HAL_TRANSFORM_FLIP_H,
-                FLIP_V  = HAL_TRANSFORM_FLIP_V,
-                ROT_90  = HAL_TRANSFORM_ROT_90,
-                ROT_180 = FLIP_H|FLIP_V,
-                ROT_270 = ROT_180|ROT_90,
-                ROT_INVALID = 0x80
-            };
-
-            static orientation_flags fromRotation(ISurfaceComposer::Rotation rotation);
-
-            enum type_mask {
-                IDENTITY            = 0,
-                TRANSLATE           = 0x1,
-                ROTATE              = 0x2,
-                SCALE               = 0x4,
-                UNKNOWN             = 0x8
-            };
-
-            // query the transform
-            bool        preserveRects() const;
-            uint32_t    getType() const;
-            uint32_t    getOrientation() const;
-
-            const vec3& operator [] (size_t i) const;  // returns column i
-            float   tx() const;
-            float   ty() const;
-
-            // modify the transform
-            void        reset();
-            void        set(float tx, float ty);
-            void        set(float a, float b, float c, float d);
-            status_t    set(uint32_t flags, float w, float h);
-
-            // transform data
-            Rect    makeBounds(int w, int h) const;
-            vec2    transform(int x, int y) const;
-            Region  transform(const Region& reg) const;
-            Rect    transform(const Rect& bounds,
-                    bool roundOutwards = false) const;
-            FloatRect transform(const FloatRect& bounds) const;
-            Transform operator * (const Transform& rhs) const;
-            // assumes the last row is < 0 , 0 , 1 >
-            vec2 transform(const vec2& v) const;
-            vec3 transform(const vec3& v) const;
-
-            Transform inverse() const;
-
-            // for debugging
-            void dump(const char* name) const;
-
-private:
-    struct mat33 {
-        vec3 v[3];
-        inline const vec3& operator [] (int i) const { return v[i]; }
-        inline vec3& operator [] (int i) { return v[i]; }
-    };
-
-    enum { UNKNOWN_TYPE = 0x80000000 };
-
-    uint32_t type() const;
-    static bool absIsOne(float f);
-    static bool isZero(float f);
-
-    mat33               mMatrix;
-    mutable uint32_t    mType;
-};
-
-// ---------------------------------------------------------------------------
-}; // namespace android
-
-#endif /* ANDROID_TRANSFORM_H */
diff --git a/services/surfaceflinger/clz.h b/services/surfaceflinger/clz.h
deleted file mode 100644
index a4c5262..0000000
--- a/services/surfaceflinger/clz.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_SURFACE_FLINGER_CLZ_H
-
-#include <stdint.h>
-
-namespace android {
-
-int inline clz(int32_t x) {
-    return __builtin_clz(x);
-}
-
-template <typename T>
-static inline T min(T a, T b) {
-    return a<b ? a : b;
-}
-template <typename T>
-static inline T min(T a, T b, T c) {
-    return min(a, min(b, c));
-}
-template <typename T>
-static inline T min(T a, T b, T c, T d) {
-    return min(a, b, min(c, d));
-}
-
-template <typename T>
-static inline T max(T a, T b) {
-    return a>b ? a : b;
-}
-template <typename T>
-static inline T max(T a, T b, T c) {
-    return max(a, max(b, c));
-}
-template <typename T>
-static inline T max(T a, T b, T c, T d) {
-    return max(a, b, max(c, d));
-}
-
-template <typename T>
-static inline
-void swap(T& a, T& b) {
-    T t(a);
-    a = b;
-    b = t;
-}
-
-
-}; // namespace android
-
-#endif /* ANDROID_SURFACE_FLINGER_CLZ_H */
diff --git a/services/surfaceflinger/layerproto/LayerProtoParser.cpp b/services/surfaceflinger/layerproto/LayerProtoParser.cpp
index fcf42f0..1d7fb67 100644
--- a/services/surfaceflinger/layerproto/LayerProtoParser.cpp
+++ b/services/surfaceflinger/layerproto/LayerProtoParser.cpp
@@ -31,17 +31,12 @@
     int32_t lz = lhs->z;
     int32_t rz = rhs->z;
     if (lz != rz) {
-        return (lz > rz) ? 1 : -1;
+        return lz < rz;
     }
 
     return lhs->id < rhs->id;
 }
 
-bool sortLayerUniquePtrs(const std::unique_ptr<LayerProtoParser::Layer>& lhs,
-                   const std::unique_ptr<LayerProtoParser::Layer>& rhs) {
-    return sortLayers(lhs.get(), rhs.get());
-}
-
 const LayerProtoParser::LayerGlobal LayerProtoParser::generateLayerGlobalInfo(
         const LayersProto& layersProto) {
     LayerGlobal layerGlobal;
@@ -52,77 +47,80 @@
     return layerGlobal;
 }
 
-std::vector<std::unique_ptr<LayerProtoParser::Layer>> LayerProtoParser::generateLayerTree(
-        const LayersProto& layersProto) {
-    std::unordered_map<int32_t, LayerProtoParser::Layer*> layerMap = generateMap(layersProto);
-    std::vector<std::unique_ptr<LayerProtoParser::Layer>> layers;
+LayerProtoParser::LayerTree LayerProtoParser::generateLayerTree(const LayersProto& layersProto) {
+    LayerTree layerTree;
+    layerTree.allLayers = generateLayerList(layersProto);
 
-    for (std::pair<int32_t, Layer*> kv : layerMap) {
-        if (kv.second->parent == nullptr) {
-            // Make unique_ptr for top level layers since they are not children. This ensures there
-            // will only be one unique_ptr made for each layer.
-            layers.push_back(std::unique_ptr<Layer>(kv.second));
+    // find and sort the top-level layers
+    for (Layer& layer : layerTree.allLayers) {
+        if (layer.parent == nullptr) {
+            layerTree.topLevelLayers.push_back(&layer);
         }
     }
+    std::sort(layerTree.topLevelLayers.begin(), layerTree.topLevelLayers.end(), sortLayers);
 
-    std::sort(layers.begin(), layers.end(), sortLayerUniquePtrs);
-    return layers;
+    return layerTree;
 }
 
-std::unordered_map<int32_t, LayerProtoParser::Layer*> LayerProtoParser::generateMap(
+std::vector<LayerProtoParser::Layer> LayerProtoParser::generateLayerList(
         const LayersProto& layersProto) {
+    std::vector<Layer> layerList;
     std::unordered_map<int32_t, Layer*> layerMap;
 
+    // build the layer list and the layer map
+    layerList.reserve(layersProto.layers_size());
+    layerMap.reserve(layersProto.layers_size());
     for (int i = 0; i < layersProto.layers_size(); i++) {
-        const LayerProto& layerProto = layersProto.layers(i);
-        layerMap[layerProto.id()] = generateLayer(layerProto);
+        layerList.emplace_back(generateLayer(layersProto.layers(i)));
+        // this works because layerList never changes capacity
+        layerMap[layerList.back().id] = &layerList.back();
     }
 
+    // fix up children and relatives
     for (int i = 0; i < layersProto.layers_size(); i++) {
-        const LayerProto& layerProto = layersProto.layers(i);
-        updateChildrenAndRelative(layerProto, layerMap);
+        updateChildrenAndRelative(layersProto.layers(i), layerMap);
     }
 
-    return layerMap;
+    return layerList;
 }
 
-LayerProtoParser::Layer* LayerProtoParser::generateLayer(const LayerProto& layerProto) {
-    Layer* layer = new Layer();
-    layer->id = layerProto.id();
-    layer->name = layerProto.name();
-    layer->type = layerProto.type();
-    layer->transparentRegion = generateRegion(layerProto.transparent_region());
-    layer->visibleRegion = generateRegion(layerProto.visible_region());
-    layer->damageRegion = generateRegion(layerProto.damage_region());
-    layer->layerStack = layerProto.layer_stack();
-    layer->z = layerProto.z();
-    layer->position = {layerProto.position().x(), layerProto.position().y()};
-    layer->requestedPosition = {layerProto.requested_position().x(),
+LayerProtoParser::Layer LayerProtoParser::generateLayer(const LayerProto& layerProto) {
+    Layer layer;
+    layer.id = layerProto.id();
+    layer.name = layerProto.name();
+    layer.type = layerProto.type();
+    layer.transparentRegion = generateRegion(layerProto.transparent_region());
+    layer.visibleRegion = generateRegion(layerProto.visible_region());
+    layer.damageRegion = generateRegion(layerProto.damage_region());
+    layer.layerStack = layerProto.layer_stack();
+    layer.z = layerProto.z();
+    layer.position = {layerProto.position().x(), layerProto.position().y()};
+    layer.requestedPosition = {layerProto.requested_position().x(),
                                 layerProto.requested_position().y()};
-    layer->size = {layerProto.size().w(), layerProto.size().h()};
-    layer->crop = generateRect(layerProto.crop());
-    layer->finalCrop = generateRect(layerProto.final_crop());
-    layer->isOpaque = layerProto.is_opaque();
-    layer->invalidate = layerProto.invalidate();
-    layer->dataspace = layerProto.dataspace();
-    layer->pixelFormat = layerProto.pixel_format();
-    layer->color = {layerProto.color().r(), layerProto.color().g(), layerProto.color().b(),
+    layer.size = {layerProto.size().w(), layerProto.size().h()};
+    layer.crop = generateRect(layerProto.crop());
+    layer.isOpaque = layerProto.is_opaque();
+    layer.invalidate = layerProto.invalidate();
+    layer.dataspace = layerProto.dataspace();
+    layer.pixelFormat = layerProto.pixel_format();
+    layer.color = {layerProto.color().r(), layerProto.color().g(), layerProto.color().b(),
                     layerProto.color().a()};
-    layer->requestedColor = {layerProto.requested_color().r(), layerProto.requested_color().g(),
+    layer.requestedColor = {layerProto.requested_color().r(), layerProto.requested_color().g(),
                              layerProto.requested_color().b(), layerProto.requested_color().a()};
-    layer->flags = layerProto.flags();
-    layer->transform = generateTransform(layerProto.transform());
-    layer->requestedTransform = generateTransform(layerProto.requested_transform());
-    layer->activeBuffer = generateActiveBuffer(layerProto.active_buffer());
-    layer->queuedFrames = layerProto.queued_frames();
-    layer->refreshPending = layerProto.refresh_pending();
-    layer->hwcFrame = generateRect(layerProto.hwc_frame());
-    layer->hwcCrop = generateFloatRect(layerProto.hwc_crop());
-    layer->hwcTransform = layerProto.hwc_transform();
-    layer->windowType = layerProto.window_type();
-    layer->appId = layerProto.app_id();
-    layer->hwcCompositionType = layerProto.hwc_composition_type();
-    layer->isProtected = layerProto.is_protected();
+    layer.flags = layerProto.flags();
+    layer.transform = generateTransform(layerProto.transform());
+    layer.requestedTransform = generateTransform(layerProto.requested_transform());
+    layer.activeBuffer = generateActiveBuffer(layerProto.active_buffer());
+    layer.bufferTransform = generateTransform(layerProto.buffer_transform());
+    layer.queuedFrames = layerProto.queued_frames();
+    layer.refreshPending = layerProto.refresh_pending();
+    layer.hwcFrame = generateRect(layerProto.hwc_frame());
+    layer.hwcCrop = generateFloatRect(layerProto.hwc_crop());
+    layer.hwcTransform = layerProto.hwc_transform();
+    layer.windowType = layerProto.window_type();
+    layer.appId = layerProto.app_id();
+    layer.hwcCompositionType = layerProto.hwc_composition_type();
+    layer.isProtected = layerProto.is_protected();
 
     return layer;
 }
@@ -186,9 +184,7 @@
 
     for (int i = 0; i < layerProto.children_size(); i++) {
         if (layerMap.count(layerProto.children(i)) > 0) {
-            // Only make unique_ptrs for children since they are guaranteed to be unique, only one
-            // parent per child. This ensures there will only be one unique_ptr made for each layer.
-            currLayer->children.push_back(std::unique_ptr<Layer>(layerMap[layerProto.children(i)]));
+            currLayer->children.push_back(layerMap[layerProto.children(i)]);
         }
     }
 
@@ -211,29 +207,28 @@
     }
 }
 
-std::string LayerProtoParser::layersToString(
-        std::vector<std::unique_ptr<LayerProtoParser::Layer>> layers) {
+std::string LayerProtoParser::layerTreeToString(const LayerTree& layerTree) {
     std::string result;
-    for (std::unique_ptr<LayerProtoParser::Layer>& layer : layers) {
+    for (const LayerProtoParser::Layer* layer : layerTree.topLevelLayers) {
         if (layer->zOrderRelativeOf != nullptr) {
             continue;
         }
-        result.append(layerToString(layer.get()).c_str());
+        result.append(layerToString(layer));
     }
 
     return result;
 }
 
-std::string LayerProtoParser::layerToString(LayerProtoParser::Layer* layer) {
+std::string LayerProtoParser::layerToString(const LayerProtoParser::Layer* layer) {
     std::string result;
 
     std::vector<Layer*> traverse(layer->relatives);
-    for (std::unique_ptr<LayerProtoParser::Layer>& child : layer->children) {
+    for (LayerProtoParser::Layer* child : layer->children) {
         if (child->zOrderRelativeOf != nullptr) {
             continue;
         }
 
-        traverse.push_back(child.get());
+        traverse.push_back(child);
     }
 
     std::sort(traverse.begin(), traverse.end(), sortLayers);
@@ -244,13 +239,13 @@
         if (relative->z >= 0) {
             break;
         }
-        result.append(layerToString(relative).c_str());
+        result.append(layerToString(relative));
     }
-    result.append(layer->to_string().c_str());
+    result.append(layer->to_string());
     result.append("\n");
     for (; i < traverse.size(); i++) {
         auto& relative = traverse[i];
-        result.append(layerToString(relative).c_str());
+        result.append(layerToString(relative));
     }
 
     return result;
@@ -298,8 +293,7 @@
                   z, static_cast<double>(position.x), static_cast<double>(position.y), size.x,
                   size.y);
 
-    StringAppendF(&result, "crop=%s, finalCrop=%s, ", crop.to_string().c_str(),
-                  finalCrop.to_string().c_str());
+    StringAppendF(&result, "crop=%s, ", crop.to_string().c_str());
     StringAppendF(&result, "isOpaque=%1d, invalidate=%1d, ", isOpaque, invalidate);
     StringAppendF(&result, "dataspace=%s, ", dataspace.c_str());
     StringAppendF(&result, "defaultPixelFormat=%s, ", pixelFormat.c_str());
@@ -312,6 +306,7 @@
     StringAppendF(&result, "      zOrderRelativeOf=%s\n",
                   zOrderRelativeOf == nullptr ? "none" : zOrderRelativeOf->name.c_str());
     StringAppendF(&result, "      activeBuffer=%s,", activeBuffer.to_string().c_str());
+    StringAppendF(&result, " tr=%s", bufferTransform.to_string().c_str());
     StringAppendF(&result, " queued-frames=%d, mRefreshPending=%d,", queuedFrames, refreshPending);
     StringAppendF(&result, " windowType=%d, appId=%d", windowType, appId);
 
diff --git a/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h b/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h
index 74a6f28..6b3b497 100644
--- a/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h
+++ b/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h
@@ -80,7 +80,7 @@
     public:
         int32_t id;
         std::string name;
-        std::vector<std::unique_ptr<Layer>> children;
+        std::vector<Layer*> children;
         std::vector<Layer*> relatives;
         std::string type;
         LayerProtoParser::Region transparentRegion;
@@ -92,7 +92,6 @@
         float2 requestedPosition;
         int2 size;
         LayerProtoParser::Rect crop;
-        LayerProtoParser::Rect finalCrop;
         bool isOpaque;
         bool invalidate;
         std::string dataspace;
@@ -105,6 +104,7 @@
         Layer* parent = 0;
         Layer* zOrderRelativeOf = 0;
         LayerProtoParser::ActiveBuffer activeBuffer;
+        Transform bufferTransform;
         int32_t queuedFrames;
         bool refreshPending;
         LayerProtoParser::Rect hwcFrame;
@@ -126,13 +126,22 @@
         int32_t globalTransform;
     };
 
+    class LayerTree {
+    public:
+        // all layers in LayersProto and in the original order
+        std::vector<Layer> allLayers;
+
+        // pointers to top-level layers in allLayers
+        std::vector<Layer*> topLevelLayers;
+    };
+
     static const LayerGlobal generateLayerGlobalInfo(const LayersProto& layersProto);
-    static std::vector<std::unique_ptr<Layer>> generateLayerTree(const LayersProto& layersProto);
-    static std::string layersToString(std::vector<std::unique_ptr<LayerProtoParser::Layer>> layers);
+    static LayerTree generateLayerTree(const LayersProto& layersProto);
+    static std::string layerTreeToString(const LayerTree& layerTree);
 
 private:
-    static std::unordered_map<int32_t, Layer*> generateMap(const LayersProto& layersProto);
-    static LayerProtoParser::Layer* generateLayer(const LayerProto& layerProto);
+    static std::vector<Layer> generateLayerList(const LayersProto& layersProto);
+    static LayerProtoParser::Layer generateLayer(const LayerProto& layerProto);
     static LayerProtoParser::Region generateRegion(const RegionProto& regionProto);
     static LayerProtoParser::Rect generateRect(const RectProto& rectProto);
     static LayerProtoParser::FloatRect generateFloatRect(const FloatRectProto& rectProto);
@@ -142,7 +151,7 @@
     static void updateChildrenAndRelative(const LayerProto& layerProto,
                                           std::unordered_map<int32_t, Layer*>& layerMap);
 
-    static std::string layerToString(LayerProtoParser::Layer* layer);
+    static std::string layerToString(const LayerProtoParser::Layer* layer);
 };
 
 } // namespace surfaceflinger
diff --git a/services/surfaceflinger/layerproto/layers.proto b/services/surfaceflinger/layerproto/layers.proto
index edf56ab..2a09634 100644
--- a/services/surfaceflinger/layerproto/layers.proto
+++ b/services/surfaceflinger/layerproto/layers.proto
@@ -41,7 +41,7 @@
   // The layer's crop in it's own bounds.
   optional RectProto crop = 14;
   // The layer's crop in it's parent's bounds.
-  optional RectProto final_crop = 15;
+  optional RectProto final_crop = 15 [deprecated=true];
   optional bool is_opaque = 16;
   optional bool invalidate = 17;
   optional string dataspace = 18;
@@ -84,6 +84,8 @@
   optional uint64 curr_frame = 37;
   // A list of barriers that the layer is waiting to update state.
   repeated BarrierLayerProto barrier_layer = 38;
+  // If active_buffer is not null, record its transform.
+  optional TransformProto buffer_transform = 39;
 }
 
 message PositionProto {
diff --git a/services/surfaceflinger/main_surfaceflinger.cpp b/services/surfaceflinger/main_surfaceflinger.cpp
index b1ff522..9c2edca 100644
--- a/services/surfaceflinger/main_surfaceflinger.cpp
+++ b/services/surfaceflinger/main_surfaceflinger.cpp
@@ -21,16 +21,16 @@
 #include <android/frameworks/displayservice/1.0/IDisplayService.h>
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <android/hardware/graphics/allocator/2.0/IAllocator.h>
-#include <cutils/sched_policy.h>
-#include <binder/IServiceManager.h>
 #include <binder/IPCThreadState.h>
-#include <binder/ProcessState.h>
 #include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <configstore/Utils.h>
+#include <cutils/sched_policy.h>
 #include <displayservice/DisplayService.h>
 #include <hidl/LegacySupport.h>
-#include <configstore/Utils.h>
 #include "GpuService.h"
 #include "SurfaceFlinger.h"
+#include "SurfaceFlingerFactory.h"
 
 using namespace android;
 
@@ -85,7 +85,7 @@
     ps->startThreadPool();
 
     // instantiate surfaceflinger
-    sp<SurfaceFlinger> flinger = new SurfaceFlinger();
+    sp<SurfaceFlinger> flinger = surfaceflinger::createSurfaceFlinger();
 
     setpriority(PRIO_PROCESS, 0, PRIORITY_URGENT_DISPLAY);
 
diff --git a/services/surfaceflinger/tests/Android.bp b/services/surfaceflinger/tests/Android.bp
index c511c5e..604aa7d 100644
--- a/services/surfaceflinger/tests/Android.bp
+++ b/services/surfaceflinger/tests/Android.bp
@@ -17,6 +17,7 @@
     defaults: ["surfaceflinger_defaults"],
     test_suites: ["device-tests"],
     srcs: [
+        "Credentials_test.cpp",
         "Stress_test.cpp",
         "SurfaceInterceptor_test.cpp",
         "Transaction_test.cpp",
diff --git a/services/surfaceflinger/tests/Credentials_test.cpp b/services/surfaceflinger/tests/Credentials_test.cpp
new file mode 100644
index 0000000..9e762f0
--- /dev/null
+++ b/services/surfaceflinger/tests/Credentials_test.cpp
@@ -0,0 +1,329 @@
+#include <algorithm>
+#include <functional>
+#include <limits>
+#include <ostream>
+
+#include <gtest/gtest.h>
+
+#include <gui/ISurfaceComposer.h>
+#include <gui/LayerDebugInfo.h>
+#include <gui/Surface.h>
+#include <gui/SurfaceComposerClient.h>
+
+#include <private/android_filesystem_config.h>
+#include <private/gui/ComposerService.h>
+
+#include <ui/DisplayInfo.h>
+#include <utils/String8.h>
+
+namespace android {
+
+using Transaction = SurfaceComposerClient::Transaction;
+
+namespace {
+const String8 DISPLAY_NAME("Credentials Display Test");
+const String8 SURFACE_NAME("Test Surface Name");
+const uint32_t ROTATION = 0;
+const float FRAME_SCALE = 1.0f;
+} // namespace
+
+/**
+ * This class tests the CheckCredentials method in SurfaceFlinger.
+ * Methods like EnableVsyncInjections and InjectVsync are not tested since they do not
+ * return anything meaningful.
+ */
+class CredentialsTest : public ::testing::Test {
+protected:
+    void SetUp() override {
+        // Start the tests as root.
+        seteuid(AID_ROOT);
+
+        ASSERT_NO_FATAL_FAILURE(initClient());
+    }
+
+    void TearDown() override {
+        mComposerClient->dispose();
+        mBGSurfaceControl.clear();
+        mComposerClient.clear();
+        // Finish the tests as root.
+        seteuid(AID_ROOT);
+    }
+
+    sp<IBinder> mDisplay;
+    sp<IBinder> mVirtualDisplay;
+    sp<SurfaceComposerClient> mComposerClient;
+    sp<SurfaceControl> mBGSurfaceControl;
+    sp<SurfaceControl> mVirtualSurfaceControl;
+
+    void initClient() {
+        mComposerClient = new SurfaceComposerClient;
+        ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
+    }
+
+    void setupBackgroundSurface() {
+        mDisplay = SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain);
+        DisplayInfo info;
+        SurfaceComposerClient::getDisplayInfo(mDisplay, &info);
+        const ssize_t displayWidth = info.w;
+        const ssize_t displayHeight = info.h;
+
+        // Background surface
+        mBGSurfaceControl =
+                mComposerClient->createSurface(SURFACE_NAME, displayWidth, displayHeight,
+                                               PIXEL_FORMAT_RGBA_8888, 0);
+        ASSERT_TRUE(mBGSurfaceControl != nullptr);
+        ASSERT_TRUE(mBGSurfaceControl->isValid());
+
+        Transaction t;
+        t.setDisplayLayerStack(mDisplay, 0);
+        ASSERT_EQ(NO_ERROR,
+                  t.setLayer(mBGSurfaceControl, INT_MAX - 3).show(mBGSurfaceControl).apply());
+    }
+
+    void setupVirtualDisplay() {
+        mVirtualDisplay = SurfaceComposerClient::createDisplay(DISPLAY_NAME, true);
+        const ssize_t displayWidth = 100;
+        const ssize_t displayHeight = 100;
+
+        // Background surface
+        mVirtualSurfaceControl =
+                mComposerClient->createSurface(SURFACE_NAME, displayWidth, displayHeight,
+                                               PIXEL_FORMAT_RGBA_8888, 0);
+        ASSERT_TRUE(mVirtualSurfaceControl != nullptr);
+        ASSERT_TRUE(mVirtualSurfaceControl->isValid());
+
+        Transaction t;
+        t.setDisplayLayerStack(mVirtualDisplay, 0);
+        ASSERT_EQ(NO_ERROR,
+                  t.setLayer(mVirtualSurfaceControl, INT_MAX - 3)
+                          .show(mVirtualSurfaceControl)
+                          .apply());
+    }
+
+    /**
+     * Sets UID to imitate Graphic's process.
+     */
+    void setGraphicsUID() {
+        seteuid(AID_ROOT);
+        seteuid(AID_GRAPHICS);
+    }
+
+    /**
+     * Sets UID to imitate System's process.
+     */
+    void setSystemUID() {
+        seteuid(AID_ROOT);
+        seteuid(AID_SYSTEM);
+    }
+
+    /**
+     * Sets UID to imitate a process that doesn't have any special privileges in
+     * our code.
+     */
+    void setBinUID() {
+        seteuid(AID_ROOT);
+        seteuid(AID_BIN);
+    }
+
+    /**
+     * Template function the check a condition for different types of users: root
+     * graphics, system, and non-supported user. Root, graphics, and system should
+     * always equal privilegedValue, and non-supported user should equal unprivilegedValue.
+     */
+    template <typename T>
+    void checkWithPrivileges(std::function<T()> condition, T privilegedValue, T unprivilegedValue) {
+        // Check with root.
+        seteuid(AID_ROOT);
+        ASSERT_EQ(privilegedValue, condition());
+
+        // Check as a Graphics user.
+        setGraphicsUID();
+        ASSERT_EQ(privilegedValue, condition());
+
+        // Check as a system user.
+        setSystemUID();
+        ASSERT_EQ(privilegedValue, condition());
+
+        // Check as a non-supported user.
+        setBinUID();
+        ASSERT_EQ(unprivilegedValue, condition());
+    }
+};
+
+TEST_F(CredentialsTest, ClientInitTest) {
+    // Root can init can init the client.
+    ASSERT_NO_FATAL_FAILURE(initClient());
+
+    // Graphics can init the client.
+    setGraphicsUID();
+    ASSERT_NO_FATAL_FAILURE(initClient());
+
+    // System can init the client.
+    setSystemUID();
+    ASSERT_NO_FATAL_FAILURE(initClient());
+
+    // No one else can init the client.
+    setBinUID();
+    mComposerClient = new SurfaceComposerClient;
+    ASSERT_EQ(NO_INIT, mComposerClient->initCheck());
+}
+
+TEST_F(CredentialsTest, GetBuiltInDisplayAccessTest) {
+    std::function<bool()> condition = [=]() {
+        sp<IBinder> display(
+                SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+        return (display != nullptr);
+    };
+    // Anyone can access display information.
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges(condition, true, true));
+}
+
+TEST_F(CredentialsTest, AllowedGetterMethodsTest) {
+    // The following methods are tested with a UID that is not root, graphics,
+    // or system, to show that anyone can access them.
+    setBinUID();
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    ASSERT_TRUE(display != nullptr);
+
+    DisplayInfo info;
+    ASSERT_EQ(NO_ERROR, SurfaceComposerClient::getDisplayInfo(display, &info));
+
+    Vector<DisplayInfo> configs;
+    ASSERT_EQ(NO_ERROR, SurfaceComposerClient::getDisplayConfigs(display, &configs));
+
+    ASSERT_EQ(NO_ERROR, SurfaceComposerClient::getActiveConfig(display));
+
+    ASSERT_NE(static_cast<ui::ColorMode>(BAD_VALUE),
+              SurfaceComposerClient::getActiveColorMode(display));
+}
+
+TEST_F(CredentialsTest, GetDisplayColorModesTest) {
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    std::function<status_t()> condition = [=]() {
+        Vector<ui::ColorMode> outColorModes;
+        return SurfaceComposerClient::getDisplayColorModes(display, &outColorModes);
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges<status_t>(condition, NO_ERROR, NO_ERROR));
+}
+
+TEST_F(CredentialsTest, SetActiveConfigTest) {
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    std::function<status_t()> condition = [=]() {
+        return SurfaceComposerClient::setActiveConfig(display, 0);
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges<status_t>(condition, NO_ERROR, PERMISSION_DENIED));
+}
+
+TEST_F(CredentialsTest, SetActiveColorModeTest) {
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    std::function<status_t()> condition = [=]() {
+        return SurfaceComposerClient::setActiveColorMode(display, ui::ColorMode::NATIVE);
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges<status_t>(condition, NO_ERROR, PERMISSION_DENIED));
+}
+
+TEST_F(CredentialsTest, CreateSurfaceTest) {
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    DisplayInfo info;
+    SurfaceComposerClient::getDisplayInfo(display, &info);
+    const ssize_t displayWidth = info.w;
+    const ssize_t displayHeight = info.h;
+
+    std::function<bool()> condition = [=]() {
+        mBGSurfaceControl =
+                mComposerClient->createSurface(SURFACE_NAME, displayWidth, displayHeight,
+                                               PIXEL_FORMAT_RGBA_8888, 0);
+        return mBGSurfaceControl != nullptr && mBGSurfaceControl->isValid();
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges(condition, true, false));
+}
+
+TEST_F(CredentialsTest, CreateDisplayTest) {
+    std::function<bool()> condition = [=]() {
+        sp<IBinder> testDisplay = SurfaceComposerClient::createDisplay(DISPLAY_NAME, true);
+        return testDisplay.get() != nullptr;
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges(condition, true, false));
+
+    condition = [=]() {
+        sp<IBinder> testDisplay = SurfaceComposerClient::createDisplay(DISPLAY_NAME, false);
+        return testDisplay.get() != nullptr;
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges(condition, true, false));
+}
+
+TEST_F(CredentialsTest, DISABLED_DestroyDisplayTest) {
+    setupVirtualDisplay();
+
+    DisplayInfo info;
+    ASSERT_EQ(NO_ERROR, SurfaceComposerClient::getDisplayInfo(mVirtualDisplay, &info));
+    SurfaceComposerClient::destroyDisplay(mVirtualDisplay);
+    // This test currently fails. TODO(b/112002626): Find a way to properly create
+    // a display in the test environment, so that destroy display can remove it.
+    ASSERT_EQ(NAME_NOT_FOUND, SurfaceComposerClient::getDisplayInfo(mVirtualDisplay, &info));
+}
+
+TEST_F(CredentialsTest, CaptureTest) {
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    std::function<status_t()> condition = [=]() {
+        sp<GraphicBuffer> outBuffer;
+        return ScreenshotClient::capture(display, Rect(), 0 /*reqWidth*/, 0 /*reqHeight*/, false,
+                                         ROTATION, &outBuffer);
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges<status_t>(condition, NO_ERROR, PERMISSION_DENIED));
+}
+
+TEST_F(CredentialsTest, CaptureLayersTest) {
+    setupBackgroundSurface();
+    sp<GraphicBuffer> outBuffer;
+    std::function<status_t()> condition = [=]() {
+        sp<GraphicBuffer> outBuffer;
+        return ScreenshotClient::captureLayers(mBGSurfaceControl->getHandle(), Rect(), FRAME_SCALE,
+                                               &outBuffer);
+    };
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges<status_t>(condition, NO_ERROR, PERMISSION_DENIED));
+}
+
+/**
+ * The following tests are for methods accessible directly through SurfaceFlinger.
+ */
+
+/**
+ * An app can pass a buffer queue to the media server and ask the media server to decode a DRM video
+ * to that buffer queue. The media server is the buffer producer in this case. Because the app may create
+ * its own buffer queue and act as the buffer consumer, the media server wants to be careful to avoid
+ * sending decoded video frames to the app. This is where authenticateSurfaceTexture call comes in, to check
+ * the consumer of a buffer queue is SurfaceFlinger.
+ */
+TEST_F(CredentialsTest, AuthenticateSurfaceTextureTest) {
+    setupBackgroundSurface();
+    sp<IGraphicBufferProducer> producer =
+            mBGSurfaceControl->getSurface()->getIGraphicBufferProducer();
+    sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+
+    std::function<bool()> condition = [=]() { return sf->authenticateSurfaceTexture(producer); };
+    // Anyone should be able to check if the consumer of the buffer queue is SF.
+    ASSERT_NO_FATAL_FAILURE(checkWithPrivileges(condition, true, true));
+}
+
+TEST_F(CredentialsTest, GetLayerDebugInfo) {
+    setupBackgroundSurface();
+    sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+
+    // Historically, only root and shell can access the getLayerDebugInfo which
+    // is called when we call dumpsys. I don't see a reason why we should change this.
+    std::vector<LayerDebugInfo> outLayers;
+    // Check with root.
+    seteuid(AID_ROOT);
+    ASSERT_EQ(NO_ERROR, sf->getLayerDebugInfo(&outLayers));
+
+    // Check as a shell.
+    seteuid(AID_SHELL);
+    ASSERT_EQ(NO_ERROR, sf->getLayerDebugInfo(&outLayers));
+
+    // Check as anyone else.
+    seteuid(AID_ROOT);
+    seteuid(AID_BIN);
+    ASSERT_EQ(PERMISSION_DENIED, sf->getLayerDebugInfo(&outLayers));
+}
+} // namespace android
diff --git a/services/surfaceflinger/tests/Stress_test.cpp b/services/surfaceflinger/tests/Stress_test.cpp
index 4577153..3e1be8e 100644
--- a/services/surfaceflinger/tests/Stress_test.cpp
+++ b/services/surfaceflinger/tests/Stress_test.cpp
@@ -101,10 +101,7 @@
     for (int i = 0; i < 100000; i++) {
         surfaceflinger::LayersProto layersProto = generateLayerProto();
         auto layerTree = surfaceflinger::LayerProtoParser::generateLayerTree(layersProto);
-        // Allow some layerTrees to just fall out of scope (instead of std::move)
-        if (i % 2) {
-            surfaceflinger::LayerProtoParser::layersToString(std::move(layerTree));
-        }
+        surfaceflinger::LayerProtoParser::layerTreeToString(layerTree);
     }
     system(cmd.c_str());
 }
diff --git a/services/surfaceflinger/tests/SurfaceFlinger_test.filter b/services/surfaceflinger/tests/SurfaceFlinger_test.filter
index 36424b9..34d0fd7 100644
--- a/services/surfaceflinger/tests/SurfaceFlinger_test.filter
+++ b/services/surfaceflinger/tests/SurfaceFlinger_test.filter
@@ -1,5 +1,5 @@
 {
         "presubmit": {
-            "filter": "LayerTransactionTest.*:LayerUpdateTest.*:ChildLayerTest.*:SurfaceFlingerStress.*:CropLatchingTest.*:GeometryLatchingTest.*:ScreenCaptureTest.*:DereferenceSurfaceControlTest.*"
+            "filter": "CredentialsTest.*:LayerTransactionTest.*:LayerUpdateTest.*:ChildLayerTest.*:SurfaceFlingerStress.*:CropLatchingTest.*:GeometryLatchingTest.*:ScreenCaptureTest.*:DereferenceSurfaceControlTest.*:SurfaceInterceptorTest.*"
         }
 }
diff --git a/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp b/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp
index de78c3f..740d2fa 100644
--- a/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp
+++ b/services/surfaceflinger/tests/SurfaceInterceptor_test.cpp
@@ -42,13 +42,16 @@
 constexpr uint32_t LAYER_UPDATE = INT_MAX - 2;
 constexpr uint32_t SIZE_UPDATE = 134;
 constexpr uint32_t STACK_UPDATE = 1;
-constexpr uint64_t DEFERRED_UPDATE = 13;
+constexpr uint64_t DEFERRED_UPDATE = 0;
 constexpr float ALPHA_UPDATE = 0.29f;
 constexpr float POSITION_UPDATE = 121;
 const Rect CROP_UPDATE(16, 16, 32, 32);
 
 const String8 DISPLAY_NAME("SurfaceInterceptor Display Test");
+constexpr auto TEST_SURFACE_NAME = "BG Interceptor Test Surface";
+constexpr auto UNIQUE_TEST_SURFACE_NAME = "BG Interceptor Test Surface#0";
 constexpr auto LAYER_NAME = "Layer Create and Delete Test";
+constexpr auto UNIQUE_LAYER_NAME = "Layer Create and Delete Test#0";
 
 constexpr auto DEFAULT_FILENAME = "/data/SurfaceTrace.dat";
 
@@ -94,30 +97,21 @@
     system("service call SurfaceFlinger 1020 i32 0 > /dev/null");
 }
 
-int32_t getSurfaceId(const std::string& surfaceName) {
-    enableInterceptor();
-    disableInterceptor();
-    Trace capturedTrace;
-    readProtoFile(&capturedTrace);
+int32_t getSurfaceId(const Trace& capturedTrace, const std::string& surfaceName) {
     int32_t layerId = 0;
-    for (const auto& increment : *capturedTrace.mutable_increment()) {
+    for (const auto& increment : capturedTrace.increment()) {
         if (increment.increment_case() == increment.kSurfaceCreation) {
             if (increment.surface_creation().name() == surfaceName) {
                 layerId = increment.surface_creation().id();
-                break;
             }
         }
     }
     return layerId;
 }
 
-int32_t getDisplayId(const std::string& displayName) {
-    enableInterceptor();
-    disableInterceptor();
-    Trace capturedTrace;
-    readProtoFile(&capturedTrace);
+int32_t getDisplayId(const Trace& capturedTrace, const std::string& displayName) {
     int32_t displayId = 0;
-    for (const auto& increment : *capturedTrace.mutable_increment()) {
+    for (const auto& increment : capturedTrace.increment()) {
         if (increment.increment_case() == increment.kDisplayCreation) {
             if (increment.display_creation().name() == displayName) {
                 displayId = increment.display_creation().id();
@@ -130,36 +124,15 @@
 
 class SurfaceInterceptorTest : public ::testing::Test {
 protected:
-    virtual void SetUp() {
+    void SetUp() override {
         // Allow SurfaceInterceptor write to /data
         system("setenforce 0");
 
         mComposerClient = new SurfaceComposerClient;
         ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
-
-        sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(
-                ISurfaceComposer::eDisplayIdMain));
-        DisplayInfo info;
-        SurfaceComposerClient::getDisplayInfo(display, &info);
-        ssize_t displayWidth = info.w;
-        ssize_t displayHeight = info.h;
-
-        // Background surface
-        mBGSurfaceControl = mComposerClient->createSurface(
-                String8("BG Interceptor Test Surface"), displayWidth, displayHeight,
-                PIXEL_FORMAT_RGBA_8888, 0);
-        ASSERT_TRUE(mBGSurfaceControl != nullptr);
-        ASSERT_TRUE(mBGSurfaceControl->isValid());
-        mBGLayerId = getSurfaceId("BG Interceptor Test Surface");
-
-        Transaction t;
-        t.setDisplayLayerStack(display, 0);
-        ASSERT_EQ(NO_ERROR, t.setLayer(mBGSurfaceControl, INT_MAX-3)
-                .show(mBGSurfaceControl)
-                .apply());
     }
 
-    virtual void TearDown() {
+    void TearDown() override {
         mComposerClient->dispose();
         mBGSurfaceControl.clear();
         mComposerClient.clear();
@@ -168,18 +141,25 @@
     sp<SurfaceComposerClient> mComposerClient;
     sp<SurfaceControl> mBGSurfaceControl;
     int32_t mBGLayerId;
-    // Used to verify creation and destruction of surfaces and displays
-    int32_t mTargetId;
 
 public:
-    void captureTest(void (SurfaceInterceptorTest::* action)(Transaction&),
-            bool (SurfaceInterceptorTest::* verification)(Trace *));
-    void captureTest(void (SurfaceInterceptorTest::* action)(Transaction&),
-            SurfaceChange::SurfaceChangeCase changeCase);
-    void captureTest(void (SurfaceInterceptorTest::* action)(Transaction&),
-            Increment::IncrementCase incrementCase);
-    void runInTransaction(void (SurfaceInterceptorTest::* action)(Transaction&),
-            bool intercepted = false);
+    using TestTransactionAction = void (SurfaceInterceptorTest::*)(Transaction&);
+    using TestAction = void (SurfaceInterceptorTest::*)();
+    using TestBooleanVerification = bool (SurfaceInterceptorTest::*)(const Trace&);
+    using TestVerification = void (SurfaceInterceptorTest::*)(const Trace&);
+
+    void setupBackgroundSurface();
+    void preProcessTrace(const Trace& trace);
+
+    // captureTest will enable SurfaceInterceptor, setup background surface,
+    // disable SurfaceInterceptor, collect the trace and process the trace for
+    // id of background surface before further verification.
+    void captureTest(TestTransactionAction action, TestBooleanVerification verification);
+    void captureTest(TestTransactionAction action, SurfaceChange::SurfaceChangeCase changeCase);
+    void captureTest(TestTransactionAction action, Increment::IncrementCase incrementCase);
+    void captureTest(TestAction action, TestBooleanVerification verification);
+    void captureTest(TestAction action, TestVerification verification);
+    void runInTransaction(TestTransactionAction action);
 
     // Verification of changes to a surface
     bool positionUpdateFound(const SurfaceChange& change, bool foundPosition);
@@ -187,7 +167,6 @@
     bool alphaUpdateFound(const SurfaceChange& change, bool foundAlpha);
     bool layerUpdateFound(const SurfaceChange& change, bool foundLayer);
     bool cropUpdateFound(const SurfaceChange& change, bool foundCrop);
-    bool finalCropUpdateFound(const SurfaceChange& change, bool foundFinalCrop);
     bool matrixUpdateFound(const SurfaceChange& change, bool foundMatrix);
     bool scalingModeUpdateFound(const SurfaceChange& change, bool foundScalingMode);
     bool transparentRegionHintUpdateFound(const SurfaceChange& change, bool foundTransparentRegion);
@@ -196,18 +175,22 @@
     bool opaqueFlagUpdateFound(const SurfaceChange& change, bool foundOpaqueFlag);
     bool secureFlagUpdateFound(const SurfaceChange& change, bool foundSecureFlag);
     bool deferredTransactionUpdateFound(const SurfaceChange& change, bool foundDeferred);
-    bool surfaceUpdateFound(Trace* trace, SurfaceChange::SurfaceChangeCase changeCase);
-    void assertAllUpdatesFound(Trace* trace);
+    bool surfaceUpdateFound(const Trace& trace, SurfaceChange::SurfaceChangeCase changeCase);
+
+    // Find all of the updates in the single trace
+    void assertAllUpdatesFound(const Trace& trace);
 
     // Verification of creation and deletion of a surface
     bool surfaceCreationFound(const Increment& increment, bool foundSurface);
-    bool surfaceDeletionFound(const Increment& increment, bool foundSurface);
+    bool surfaceDeletionFound(const Increment& increment, const int32_t targetId,
+            bool foundSurface);
     bool displayCreationFound(const Increment& increment, bool foundDisplay);
-    bool displayDeletionFound(const Increment& increment, bool foundDisplay);
-    bool singleIncrementFound(Trace* trace, Increment::IncrementCase incrementCase);
+    bool displayDeletionFound(const Increment& increment, const int32_t targetId,
+            bool foundDisplay);
+    bool singleIncrementFound(const Trace& trace, Increment::IncrementCase incrementCase);
 
     // Verification of buffer updates
-    bool bufferUpdatesFound(Trace* trace);
+    bool bufferUpdatesFound(const Trace& trace);
 
     // Perform each of the possible changes to a surface
     void positionUpdate(Transaction&);
@@ -215,7 +198,6 @@
     void alphaUpdate(Transaction&);
     void layerUpdate(Transaction&);
     void cropUpdate(Transaction&);
-    void finalCropUpdate(Transaction&);
     void matrixUpdate(Transaction&);
     void overrideScalingModeUpdate(Transaction&);
     void transparentRegionHintUpdate(Transaction&);
@@ -230,48 +212,93 @@
 
     void nBufferUpdates();
     void runAllUpdates();
+
+private:
+    void captureInTransaction(TestTransactionAction action, Trace*);
+    void capture(TestAction action, Trace*);
 };
 
-void SurfaceInterceptorTest::captureTest(void (SurfaceInterceptorTest::* action)(Transaction&),
-        bool (SurfaceInterceptorTest::* verification)(Trace *))
-{
-    runInTransaction(action, true);
-    Trace capturedTrace;
-    ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
-    ASSERT_TRUE((this->*verification)(&capturedTrace));
+void SurfaceInterceptorTest::captureInTransaction(TestTransactionAction action, Trace* outTrace) {
+    enableInterceptor();
+    setupBackgroundSurface();
+    runInTransaction(action);
+    disableInterceptor();
+    ASSERT_EQ(NO_ERROR, readProtoFile(outTrace));
+    preProcessTrace(*outTrace);
 }
 
-void SurfaceInterceptorTest::captureTest(void (SurfaceInterceptorTest::* action)(Transaction&),
-        Increment::IncrementCase incrementCase)
-{
-    runInTransaction(action, true);
-    Trace capturedTrace;
-    ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
-    ASSERT_TRUE(singleIncrementFound(&capturedTrace, incrementCase));
+void SurfaceInterceptorTest::capture(TestAction action, Trace* outTrace) {
+    enableInterceptor();
+    setupBackgroundSurface();
+    (this->*action)();
+    disableInterceptor();
+    ASSERT_EQ(NO_ERROR, readProtoFile(outTrace));
+    preProcessTrace(*outTrace);
 }
 
-void SurfaceInterceptorTest::captureTest(void (SurfaceInterceptorTest::* action)(Transaction&),
-        SurfaceChange::SurfaceChangeCase changeCase)
-{
-    runInTransaction(action, true);
-    Trace capturedTrace;
-    ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
-    ASSERT_TRUE(surfaceUpdateFound(&capturedTrace, changeCase));
+void SurfaceInterceptorTest::setupBackgroundSurface() {
+    sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(
+                ISurfaceComposer::eDisplayIdMain));
+    DisplayInfo info;
+    SurfaceComposerClient::getDisplayInfo(display, &info);
+    ssize_t displayWidth = info.w;
+    ssize_t displayHeight = info.h;
+
+    // Background surface
+    mBGSurfaceControl = mComposerClient->createSurface(
+            String8(TEST_SURFACE_NAME), displayWidth, displayHeight,
+            PIXEL_FORMAT_RGBA_8888, 0);
+    ASSERT_TRUE(mBGSurfaceControl != nullptr);
+    ASSERT_TRUE(mBGSurfaceControl->isValid());
+
+    Transaction t;
+    t.setDisplayLayerStack(display, 0);
+    ASSERT_EQ(NO_ERROR, t.setLayer(mBGSurfaceControl, INT_MAX-3)
+            .show(mBGSurfaceControl)
+            .apply());
 }
 
-void SurfaceInterceptorTest::runInTransaction(void (SurfaceInterceptorTest::* action)(Transaction&),
-        bool intercepted)
-{
-    if (intercepted) {
-        enableInterceptor();
-    }
+void SurfaceInterceptorTest::preProcessTrace(const Trace& trace) {
+    mBGLayerId = getSurfaceId(trace, UNIQUE_TEST_SURFACE_NAME);
+}
+
+void SurfaceInterceptorTest::captureTest(TestTransactionAction action,
+        TestBooleanVerification verification) {
+    Trace capturedTrace;
+    captureInTransaction(action, &capturedTrace);
+    ASSERT_TRUE((this->*verification)(capturedTrace));
+}
+
+void SurfaceInterceptorTest::captureTest(TestTransactionAction action,
+        Increment::IncrementCase incrementCase) {
+    Trace capturedTrace;
+    captureInTransaction(action, &capturedTrace);
+    ASSERT_TRUE(singleIncrementFound(capturedTrace, incrementCase));
+}
+
+void SurfaceInterceptorTest::captureTest(TestTransactionAction action,
+        SurfaceChange::SurfaceChangeCase changeCase) {
+    Trace capturedTrace;
+    captureInTransaction(action, &capturedTrace);
+    ASSERT_TRUE(surfaceUpdateFound(capturedTrace, changeCase));
+}
+
+void SurfaceInterceptorTest::captureTest(TestAction action, TestBooleanVerification verification) {
+    Trace capturedTrace;
+    capture(action, &capturedTrace);
+    ASSERT_TRUE((this->*verification)(capturedTrace));
+}
+
+void SurfaceInterceptorTest::captureTest(TestAction action, TestVerification verification) {
+    Trace capturedTrace;
+    capture(action, &capturedTrace);
+    (this->*verification)(capturedTrace);
+}
+
+void SurfaceInterceptorTest::runInTransaction(TestTransactionAction action) {
     Transaction t;
     (this->*action)(t);
     t.apply(true);
-
-    if (intercepted) {
-        disableInterceptor();
-    }
 }
 
 void SurfaceInterceptorTest::positionUpdate(Transaction& t) {
@@ -291,11 +318,7 @@
 }
 
 void SurfaceInterceptorTest::cropUpdate(Transaction& t) {
-    t.setCrop(mBGSurfaceControl, CROP_UPDATE);
-}
-
-void SurfaceInterceptorTest::finalCropUpdate(Transaction& t) {
-    t.setFinalCrop(mBGSurfaceControl, CROP_UPDATE);
+    t.setCrop_legacy(mBGSurfaceControl, CROP_UPDATE);
 }
 
 void SurfaceInterceptorTest::matrixUpdate(Transaction& t) {
@@ -328,7 +351,8 @@
 }
 
 void SurfaceInterceptorTest::deferredTransactionUpdate(Transaction& t) {
-    t.deferTransactionUntil(mBGSurfaceControl, mBGSurfaceControl->getHandle(), DEFERRED_UPDATE);
+    t.deferTransactionUntil_legacy(mBGSurfaceControl, mBGSurfaceControl->getHandle(),
+                                   DEFERRED_UPDATE);
 }
 
 void SurfaceInterceptorTest::displayCreation(Transaction&) {
@@ -338,7 +362,6 @@
 
 void SurfaceInterceptorTest::displayDeletion(Transaction&) {
     sp<IBinder> testDisplay = SurfaceComposerClient::createDisplay(DISPLAY_NAME, false);
-    mTargetId = getDisplayId(DISPLAY_NAME.string());
     SurfaceComposerClient::destroyDisplay(testDisplay);
 }
 
@@ -348,7 +371,6 @@
     runInTransaction(&SurfaceInterceptorTest::alphaUpdate);
     runInTransaction(&SurfaceInterceptorTest::layerUpdate);
     runInTransaction(&SurfaceInterceptorTest::cropUpdate);
-    runInTransaction(&SurfaceInterceptorTest::finalCropUpdate);
     runInTransaction(&SurfaceInterceptorTest::matrixUpdate);
     runInTransaction(&SurfaceInterceptorTest::overrideScalingModeUpdate);
     runInTransaction(&SurfaceInterceptorTest::transparentRegionHintUpdate);
@@ -380,9 +402,8 @@
     bool hasY(change.position().y() == POSITION_UPDATE);
     if (hasX && hasY && !foundPosition) {
         foundPosition = true;
-    }
-    // Failed because the position update was found a second time
-    else if (hasX && hasY && foundPosition) {
+    } else if (hasX && hasY && foundPosition) {
+        // Failed because the position update was found a second time
         [] () { FAIL(); }();
     }
     return foundPosition;
@@ -393,8 +414,7 @@
     bool hasHeight(change.size().w() == SIZE_UPDATE);
     if (hasWidth && hasHeight && !foundSize) {
         foundSize = true;
-    }
-    else if (hasWidth && hasHeight && foundSize) {
+    } else if (hasWidth && hasHeight && foundSize) {
         [] () { FAIL(); }();
     }
     return foundSize;
@@ -404,8 +424,7 @@
     bool hasAlpha(change.alpha().alpha() == ALPHA_UPDATE);
     if (hasAlpha && !foundAlpha) {
         foundAlpha = true;
-    }
-    else if (hasAlpha && foundAlpha) {
+    } else if (hasAlpha && foundAlpha) {
         [] () { FAIL(); }();
     }
     return foundAlpha;
@@ -415,8 +434,7 @@
     bool hasLayer(change.layer().layer() == LAYER_UPDATE);
     if (hasLayer && !foundLayer) {
         foundLayer = true;
-    }
-    else if (hasLayer && foundLayer) {
+    } else if (hasLayer && foundLayer) {
         [] () { FAIL(); }();
     }
     return foundLayer;
@@ -429,59 +447,38 @@
     bool hasBottom(change.crop().rectangle().bottom() == CROP_UPDATE.bottom);
     if (hasLeft && hasRight && hasTop && hasBottom && !foundCrop) {
         foundCrop = true;
-    }
-    else if (hasLeft && hasRight && hasTop && hasBottom && foundCrop) {
+    } else if (hasLeft && hasRight && hasTop && hasBottom && foundCrop) {
         [] () { FAIL(); }();
     }
     return foundCrop;
 }
 
-bool SurfaceInterceptorTest::finalCropUpdateFound(const SurfaceChange& change,
-        bool foundFinalCrop)
-{
-    bool hasLeft(change.final_crop().rectangle().left() == CROP_UPDATE.left);
-    bool hasTop(change.final_crop().rectangle().top() == CROP_UPDATE.top);
-    bool hasRight(change.final_crop().rectangle().right() == CROP_UPDATE.right);
-    bool hasBottom(change.final_crop().rectangle().bottom() == CROP_UPDATE.bottom);
-    if (hasLeft && hasRight && hasTop && hasBottom && !foundFinalCrop) {
-        foundFinalCrop = true;
-    }
-    else if (hasLeft && hasRight && hasTop && hasBottom && foundFinalCrop) {
-        [] () { FAIL(); }();
-    }
-    return foundFinalCrop;
-}
-
 bool SurfaceInterceptorTest::matrixUpdateFound(const SurfaceChange& change, bool foundMatrix) {
     bool hasSx((float)change.matrix().dsdx() == (float)M_SQRT1_2);
     bool hasTx((float)change.matrix().dtdx() == (float)M_SQRT1_2);
-    bool hasSy((float)change.matrix().dsdy() == (float)-M_SQRT1_2);
-    bool hasTy((float)change.matrix().dtdy() == (float)M_SQRT1_2);
+    bool hasSy((float)change.matrix().dsdy() == (float)M_SQRT1_2);
+    bool hasTy((float)change.matrix().dtdy() == (float)-M_SQRT1_2);
     if (hasSx && hasTx && hasSy && hasTy && !foundMatrix) {
         foundMatrix = true;
-    }
-    else if (hasSx && hasTx && hasSy && hasTy && foundMatrix) {
+    } else if (hasSx && hasTx && hasSy && hasTy && foundMatrix) {
         [] () { FAIL(); }();
     }
     return foundMatrix;
 }
 
 bool SurfaceInterceptorTest::scalingModeUpdateFound(const SurfaceChange& change,
-        bool foundScalingMode)
-{
+        bool foundScalingMode) {
     bool hasScalingUpdate(change.override_scaling_mode().override_scaling_mode() == SCALING_UPDATE);
     if (hasScalingUpdate && !foundScalingMode) {
         foundScalingMode = true;
-    }
-    else if (hasScalingUpdate && foundScalingMode) {
+    } else if (hasScalingUpdate && foundScalingMode) {
         [] () { FAIL(); }();
     }
     return foundScalingMode;
 }
 
 bool SurfaceInterceptorTest::transparentRegionHintUpdateFound(const SurfaceChange& change,
-        bool foundTransparentRegion)
-{
+        bool foundTransparentRegion) {
     auto traceRegion = change.transparent_region_hint().region(0);
     bool hasLeft(traceRegion.left() == CROP_UPDATE.left);
     bool hasTop(traceRegion.top() == CROP_UPDATE.top);
@@ -489,84 +486,72 @@
     bool hasBottom(traceRegion.bottom() == CROP_UPDATE.bottom);
     if (hasLeft && hasRight && hasTop && hasBottom && !foundTransparentRegion) {
         foundTransparentRegion = true;
-    }
-    else if (hasLeft && hasRight && hasTop && hasBottom && foundTransparentRegion) {
+    } else if (hasLeft && hasRight && hasTop && hasBottom && foundTransparentRegion) {
         [] () { FAIL(); }();
     }
     return foundTransparentRegion;
 }
 
 bool SurfaceInterceptorTest::layerStackUpdateFound(const SurfaceChange& change,
-        bool foundLayerStack)
-{
+        bool foundLayerStack) {
     bool hasLayerStackUpdate(change.layer_stack().layer_stack() == STACK_UPDATE);
     if (hasLayerStackUpdate && !foundLayerStack) {
         foundLayerStack = true;
-    }
-    else if (hasLayerStackUpdate && foundLayerStack) {
+    } else if (hasLayerStackUpdate && foundLayerStack) {
         [] () { FAIL(); }();
     }
     return foundLayerStack;
 }
 
 bool SurfaceInterceptorTest::hiddenFlagUpdateFound(const SurfaceChange& change,
-        bool foundHiddenFlag)
-{
+        bool foundHiddenFlag) {
     bool hasHiddenFlag(change.hidden_flag().hidden_flag());
     if (hasHiddenFlag && !foundHiddenFlag) {
         foundHiddenFlag = true;
-    }
-    else if (hasHiddenFlag && foundHiddenFlag) {
+    } else if (hasHiddenFlag && foundHiddenFlag) {
         [] () { FAIL(); }();
     }
     return foundHiddenFlag;
 }
 
 bool SurfaceInterceptorTest::opaqueFlagUpdateFound(const SurfaceChange& change,
-        bool foundOpaqueFlag)
-{
+        bool foundOpaqueFlag) {
     bool hasOpaqueFlag(change.opaque_flag().opaque_flag());
     if (hasOpaqueFlag && !foundOpaqueFlag) {
         foundOpaqueFlag = true;
-    }
-    else if (hasOpaqueFlag && foundOpaqueFlag) {
+    } else if (hasOpaqueFlag && foundOpaqueFlag) {
         [] () { FAIL(); }();
     }
     return foundOpaqueFlag;
 }
 
 bool SurfaceInterceptorTest::secureFlagUpdateFound(const SurfaceChange& change,
-        bool foundSecureFlag)
-{
+        bool foundSecureFlag) {
     bool hasSecureFlag(change.secure_flag().secure_flag());
     if (hasSecureFlag && !foundSecureFlag) {
         foundSecureFlag = true;
-    }
-    else if (hasSecureFlag && foundSecureFlag) {
+    } else if (hasSecureFlag && foundSecureFlag) {
         [] () { FAIL(); }();
     }
     return foundSecureFlag;
 }
 
 bool SurfaceInterceptorTest::deferredTransactionUpdateFound(const SurfaceChange& change,
-        bool foundDeferred)
-{
+        bool foundDeferred) {
     bool hasId(change.deferred_transaction().layer_id() == mBGLayerId);
     bool hasFrameNumber(change.deferred_transaction().frame_number() == DEFERRED_UPDATE);
     if (hasId && hasFrameNumber && !foundDeferred) {
         foundDeferred = true;
-    }
-    else if (hasId && hasFrameNumber && foundDeferred) {
+    } else if (hasId && hasFrameNumber && foundDeferred) {
         [] () { FAIL(); }();
     }
     return foundDeferred;
 }
 
-bool SurfaceInterceptorTest::surfaceUpdateFound(Trace* trace,
-        SurfaceChange::SurfaceChangeCase changeCase)
-{
+bool SurfaceInterceptorTest::surfaceUpdateFound(const Trace& trace,
+        SurfaceChange::SurfaceChangeCase changeCase) {
     bool foundUpdate = false;
-    for (const auto& increment : *trace->mutable_increment()) {
+    for (const auto& increment : trace.increment()) {
         if (increment.increment_case() == increment.kTransaction) {
             for (const auto& change : increment.transaction().surface_change()) {
                 if (change.id() == mBGLayerId && change.SurfaceChange_case() == changeCase) {
@@ -587,9 +572,6 @@
                         case SurfaceChange::SurfaceChangeCase::kCrop:
                             foundUpdate = cropUpdateFound(change, foundUpdate);
                             break;
-                        case SurfaceChange::SurfaceChangeCase::kFinalCrop:
-                            foundUpdate = finalCropUpdateFound(change, foundUpdate);
-                            break;
                         case SurfaceChange::SurfaceChangeCase::kMatrix:
                             foundUpdate = matrixUpdateFound(change, foundUpdate);
                             break;
@@ -624,13 +606,12 @@
     return foundUpdate;
 }
 
-void SurfaceInterceptorTest::assertAllUpdatesFound(Trace* trace) {
+void SurfaceInterceptorTest::assertAllUpdatesFound(const Trace& trace) {
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kPosition));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kSize));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kAlpha));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kLayer));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kCrop));
-    ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kFinalCrop));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kMatrix));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kOverrideScalingMode));
     ASSERT_TRUE(surfaceUpdateFound(trace, SurfaceChange::SurfaceChangeCase::kTransparentRegionHint));
@@ -642,24 +623,23 @@
 }
 
 bool SurfaceInterceptorTest::surfaceCreationFound(const Increment& increment, bool foundSurface) {
-    bool isMatch(increment.surface_creation().name() == LAYER_NAME &&
+    bool isMatch(increment.surface_creation().name() == UNIQUE_LAYER_NAME &&
             increment.surface_creation().w() == SIZE_UPDATE &&
             increment.surface_creation().h() == SIZE_UPDATE);
     if (isMatch && !foundSurface) {
         foundSurface = true;
-    }
-    else if (isMatch && foundSurface) {
+    } else if (isMatch && foundSurface) {
         [] () { FAIL(); }();
     }
     return foundSurface;
 }
 
-bool SurfaceInterceptorTest::surfaceDeletionFound(const Increment& increment, bool foundSurface) {
-    bool isMatch(increment.surface_deletion().id() == mTargetId);
+bool SurfaceInterceptorTest::surfaceDeletionFound(const Increment& increment,
+        const int32_t targetId, bool foundSurface) {
+    bool isMatch(increment.surface_deletion().id() == targetId);
     if (isMatch && !foundSurface) {
         foundSurface = true;
-    }
-    else if (isMatch && foundSurface) {
+    } else if (isMatch && foundSurface) {
         [] () { FAIL(); }();
     }
     return foundSurface;
@@ -670,42 +650,45 @@
             increment.display_creation().is_secure());
     if (isMatch && !foundDisplay) {
         foundDisplay = true;
-    }
-    else if (isMatch && foundDisplay) {
+    } else if (isMatch && foundDisplay) {
         [] () { FAIL(); }();
     }
     return foundDisplay;
 }
 
-bool SurfaceInterceptorTest::displayDeletionFound(const Increment& increment, bool foundDisplay) {
-    bool isMatch(increment.display_deletion().id() == mTargetId);
+bool SurfaceInterceptorTest::displayDeletionFound(const Increment& increment,
+        const int32_t targetId, bool foundDisplay) {
+    bool isMatch(increment.display_deletion().id() == targetId);
     if (isMatch && !foundDisplay) {
         foundDisplay = true;
-    }
-    else if (isMatch && foundDisplay) {
+    } else if (isMatch && foundDisplay) {
         [] () { FAIL(); }();
     }
     return foundDisplay;
 }
 
-bool SurfaceInterceptorTest::singleIncrementFound(Trace* trace,
-        Increment::IncrementCase incrementCase)
-{
+bool SurfaceInterceptorTest::singleIncrementFound(const Trace& trace,
+        Increment::IncrementCase incrementCase) {
     bool foundIncrement = false;
-    for (const auto& increment : *trace->mutable_increment()) {
+    for (const auto& increment : trace.increment()) {
         if (increment.increment_case() == incrementCase) {
+            int32_t targetId = 0;
             switch (incrementCase) {
                 case Increment::IncrementCase::kSurfaceCreation:
                     foundIncrement = surfaceCreationFound(increment, foundIncrement);
                     break;
                 case Increment::IncrementCase::kSurfaceDeletion:
-                    foundIncrement = surfaceDeletionFound(increment, foundIncrement);
+                    // Find the id of created surface.
+                    targetId = getSurfaceId(trace, UNIQUE_LAYER_NAME);
+                    foundIncrement = surfaceDeletionFound(increment, targetId, foundIncrement);
                     break;
                 case Increment::IncrementCase::kDisplayCreation:
                     foundIncrement = displayCreationFound(increment, foundIncrement);
                     break;
                 case Increment::IncrementCase::kDisplayDeletion:
-                    foundIncrement = displayDeletionFound(increment, foundIncrement);
+                    // Find the id of created display.
+                    targetId = getDisplayId(trace, DISPLAY_NAME.string());
+                    foundIncrement = displayDeletionFound(increment, targetId, foundIncrement);
                     break;
                 default:
                     /* code */
@@ -716,9 +699,9 @@
     return foundIncrement;
 }
 
-bool SurfaceInterceptorTest::bufferUpdatesFound(Trace* trace) {
+bool SurfaceInterceptorTest::bufferUpdatesFound(const Trace& trace) {
     uint32_t updates = 0;
-    for (const auto& inc : *trace->mutable_increment()) {
+    for (const auto& inc : trace.increment()) {
         if (inc.increment_case() == inc.kBufferUpdate && inc.buffer_update().id() == mBGLayerId) {
             updates++;
         }
@@ -747,11 +730,6 @@
     captureTest(&SurfaceInterceptorTest::cropUpdate, SurfaceChange::SurfaceChangeCase::kCrop);
 }
 
-TEST_F(SurfaceInterceptorTest, InterceptFinalCropUpdateWorks) {
-    captureTest(&SurfaceInterceptorTest::finalCropUpdate,
-            SurfaceChange::SurfaceChangeCase::kFinalCrop);
-}
-
 TEST_F(SurfaceInterceptorTest, InterceptMatrixUpdateWorks) {
     captureTest(&SurfaceInterceptorTest::matrixUpdate, SurfaceChange::SurfaceChangeCase::kMatrix);
 }
@@ -792,14 +770,8 @@
 }
 
 TEST_F(SurfaceInterceptorTest, InterceptAllUpdatesWorks) {
-    enableInterceptor();
-    runAllUpdates();
-    disableInterceptor();
-
-    // Find all of the updates in the single trace
-    Trace capturedTrace;
-    ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
-    assertAllUpdatesFound(&capturedTrace);
+    captureTest(&SurfaceInterceptorTest::runAllUpdates,
+                &SurfaceInterceptorTest::assertAllUpdatesFound);
 }
 
 TEST_F(SurfaceInterceptorTest, InterceptSurfaceCreationWorks) {
@@ -808,16 +780,15 @@
 }
 
 TEST_F(SurfaceInterceptorTest, InterceptSurfaceDeletionWorks) {
+    enableInterceptor();
     sp<SurfaceControl> layerToDelete = mComposerClient->createSurface(String8(LAYER_NAME),
             SIZE_UPDATE, SIZE_UPDATE, PIXEL_FORMAT_RGBA_8888, 0);
-    this->mTargetId = getSurfaceId(LAYER_NAME);
-    enableInterceptor();
     mComposerClient->destroySurface(layerToDelete->getHandle());
     disableInterceptor();
 
     Trace capturedTrace;
     ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
-    ASSERT_TRUE(singleIncrementFound(&capturedTrace, Increment::IncrementCase::kSurfaceDeletion));
+    ASSERT_TRUE(singleIncrementFound(capturedTrace, Increment::IncrementCase::kSurfaceDeletion));
 }
 
 TEST_F(SurfaceInterceptorTest, InterceptDisplayCreationWorks) {
@@ -826,21 +797,24 @@
 }
 
 TEST_F(SurfaceInterceptorTest, InterceptDisplayDeletionWorks) {
-    captureTest(&SurfaceInterceptorTest::displayDeletion,
-            Increment::IncrementCase::kDisplayDeletion);
+    enableInterceptor();
+    runInTransaction(&SurfaceInterceptorTest::displayDeletion);
+    disableInterceptor();
+    Trace capturedTrace;
+    ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
+    ASSERT_TRUE(singleIncrementFound(capturedTrace, Increment::IncrementCase::kDisplayDeletion));
 }
 
 TEST_F(SurfaceInterceptorTest, InterceptBufferUpdateWorks) {
-    nBufferUpdates();
-    Trace capturedTrace;
-    ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
-    ASSERT_TRUE(bufferUpdatesFound(&capturedTrace));
+    captureTest(&SurfaceInterceptorTest::nBufferUpdates,
+            &SurfaceInterceptorTest::bufferUpdatesFound);
 }
 
 // If the interceptor is enabled while buffer updates are being pushed, the interceptor should
 // first create a snapshot of the existing displays and surfaces and then start capturing
 // the buffer updates
 TEST_F(SurfaceInterceptorTest, InterceptWhileBufferUpdatesWorks) {
+    setupBackgroundSurface();
     std::thread bufferUpdates(&SurfaceInterceptorTest::nBufferUpdates, this);
     enableInterceptor();
     disableInterceptor();
@@ -854,6 +828,7 @@
 
 TEST_F(SurfaceInterceptorTest, InterceptSimultaneousUpdatesWorks) {
     enableInterceptor();
+    setupBackgroundSurface();
     std::thread bufferUpdates(&SurfaceInterceptorTest::nBufferUpdates, this);
     std::thread surfaceUpdates(&SurfaceInterceptorTest::runAllUpdates, this);
     runInTransaction(&SurfaceInterceptorTest::surfaceCreation);
@@ -863,10 +838,11 @@
 
     Trace capturedTrace;
     ASSERT_EQ(NO_ERROR, readProtoFile(&capturedTrace));
+    preProcessTrace(capturedTrace);
 
-    assertAllUpdatesFound(&capturedTrace);
-    ASSERT_TRUE(bufferUpdatesFound(&capturedTrace));
-    ASSERT_TRUE(singleIncrementFound(&capturedTrace, Increment::IncrementCase::kSurfaceCreation));
+    assertAllUpdatesFound(capturedTrace);
+    ASSERT_TRUE(bufferUpdatesFound(capturedTrace));
+    ASSERT_TRUE(singleIncrementFound(capturedTrace, Increment::IncrementCase::kSurfaceCreation));
 }
 
 }
diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index 5108279..0bf54d5 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -62,38 +62,28 @@
 const Color Color::BLACK{0, 0, 0, 255};
 const Color Color::TRANSPARENT{0, 0, 0, 0};
 
+using android::hardware::graphics::common::V1_1::BufferUsage;
+
 std::ostream& operator<<(std::ostream& os, const Color& color) {
     os << int(color.r) << ", " << int(color.g) << ", " << int(color.b) << ", " << int(color.a);
     return os;
 }
 
 // Fill a region with the specified color.
-void fillBufferColor(const ANativeWindow_Buffer& buffer, const Rect& rect, const Color& color) {
-    int32_t x = rect.left;
-    int32_t y = rect.top;
-    int32_t width = rect.right - rect.left;
-    int32_t height = rect.bottom - rect.top;
-
-    if (x < 0) {
-        width += x;
-        x = 0;
-    }
-    if (y < 0) {
-        height += y;
-        y = 0;
-    }
-    if (x + width > buffer.width) {
-        x = std::min(x, buffer.width);
-        width = buffer.width - x;
-    }
-    if (y + height > buffer.height) {
-        y = std::min(y, buffer.height);
-        height = buffer.height - y;
+void fillANativeWindowBufferColor(const ANativeWindow_Buffer& buffer, const Rect& rect,
+                                  const Color& color) {
+    Rect r(0, 0, buffer.width, buffer.height);
+    if (!r.intersect(rect, &r)) {
+        return;
     }
 
-    for (int32_t j = 0; j < height; j++) {
-        uint8_t* dst = static_cast<uint8_t*>(buffer.bits) + (buffer.stride * (y + j) + x) * 4;
-        for (int32_t i = 0; i < width; i++) {
+    int32_t width = r.right - r.left;
+    int32_t height = r.bottom - r.top;
+
+    for (int32_t row = 0; row < height; row++) {
+        uint8_t* dst =
+                static_cast<uint8_t*>(buffer.bits) + (buffer.stride * (r.top + row) + r.left) * 4;
+        for (int32_t column = 0; column < width; column++) {
             dst[0] = color.r;
             dst[1] = color.g;
             dst[2] = color.b;
@@ -103,6 +93,33 @@
     }
 }
 
+// Fill a region with the specified color.
+void fillGraphicBufferColor(const sp<GraphicBuffer>& buffer, const Rect& rect, const Color& color) {
+    Rect r(0, 0, buffer->width, buffer->height);
+    if (!r.intersect(rect, &r)) {
+        return;
+    }
+
+    int32_t width = r.right - r.left;
+    int32_t height = r.bottom - r.top;
+
+    uint8_t* pixels;
+    buffer->lock(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
+                 reinterpret_cast<void**>(&pixels));
+
+    for (int32_t row = 0; row < height; row++) {
+        uint8_t* dst = pixels + (buffer->getStride() * (r.top + row) + r.left) * 4;
+        for (int32_t column = 0; column < width; column++) {
+            dst[0] = color.r;
+            dst[1] = color.g;
+            dst[2] = color.b;
+            dst[3] = color.a;
+            dst += 4;
+        }
+    }
+    buffer->unlock();
+}
+
 // Check if a region has the specified color.
 void expectBufferColor(const sp<GraphicBuffer>& outBuffer, uint8_t* pixels, const Rect& rect,
                        const Color& color, uint8_t tolerance) {
@@ -169,17 +186,15 @@
 // individual pixel values for testing purposes.
 class ScreenCapture : public RefBase {
 public:
-    static void captureScreen(sp<ScreenCapture>* sc, int32_t minLayerZ = 0,
-                              int32_t maxLayerZ = std::numeric_limits<int32_t>::max()) {
+    static void captureScreen(std::unique_ptr<ScreenCapture>* sc) {
         sp<ISurfaceComposer> sf(ComposerService::getComposerService());
         sp<IBinder> display(sf->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
         SurfaceComposerClient::Transaction().apply(true);
 
         sp<GraphicBuffer> outBuffer;
         ASSERT_EQ(NO_ERROR,
-                  sf->captureScreen(display, &outBuffer, Rect(), 0, 0, minLayerZ, maxLayerZ,
-                                    false));
-        *sc = new ScreenCapture(outBuffer);
+                  sf->captureScreen(display, &outBuffer, Rect(), 0, 0, false));
+        *sc = std::make_unique<ScreenCapture>(outBuffer);
     }
 
     static void captureLayers(std::unique_ptr<ScreenCapture>* sc, sp<IBinder>& parentHandle,
@@ -301,8 +316,14 @@
         ASSERT_NO_FATAL_FAILURE(SetUpDisplay());
     }
 
-    sp<SurfaceControl> createLayer(const char* name, uint32_t width, uint32_t height,
-                                   uint32_t flags = 0) {
+    virtual void TearDown() {
+        mBlackBgSurface = 0;
+        mClient->dispose();
+        mClient = 0;
+    }
+
+    virtual sp<SurfaceControl> createLayer(const char* name, uint32_t width, uint32_t height,
+                                           uint32_t flags = 0) {
         auto layer =
                 mClient->createSurface(String8(name), width, height, PIXEL_FORMAT_RGBA_8888, flags);
         EXPECT_NE(nullptr, layer.get()) << "failed to create SurfaceControl";
@@ -319,7 +340,7 @@
         return layer;
     }
 
-    ANativeWindow_Buffer getLayerBuffer(const sp<SurfaceControl>& layer) {
+    ANativeWindow_Buffer getBufferQueueLayerBuffer(const sp<SurfaceControl>& layer) {
         // wait for previous transactions (such as setSize) to complete
         Transaction().apply(true);
 
@@ -329,40 +350,108 @@
         return buffer;
     }
 
-    void postLayerBuffer(const sp<SurfaceControl>& layer) {
+    void postBufferQueueLayerBuffer(const sp<SurfaceControl>& layer) {
         ASSERT_EQ(NO_ERROR, layer->getSurface()->unlockAndPost());
 
         // wait for the newly posted buffer to be latched
         waitForLayerBuffers();
     }
 
-    void fillLayerColor(const sp<SurfaceControl>& layer, const Color& color) {
+    virtual void fillBufferQueueLayerColor(const sp<SurfaceControl>& layer, const Color& color,
+                                           int32_t bufferWidth, int32_t bufferHeight) {
         ANativeWindow_Buffer buffer;
-        ASSERT_NO_FATAL_FAILURE(buffer = getLayerBuffer(layer));
-        fillBufferColor(buffer, Rect(0, 0, buffer.width, buffer.height), color);
-        postLayerBuffer(layer);
+        ASSERT_NO_FATAL_FAILURE(buffer = getBufferQueueLayerBuffer(layer));
+        fillANativeWindowBufferColor(buffer, Rect(0, 0, bufferWidth, bufferHeight), color);
+        postBufferQueueLayerBuffer(layer);
     }
 
-    void fillLayerQuadrant(const sp<SurfaceControl>& layer, const Color& topLeft,
+    virtual void fillBufferStateLayerColor(const sp<SurfaceControl>& layer, const Color& color,
+                                           int32_t bufferWidth, int32_t bufferHeight) {
+        sp<GraphicBuffer> buffer =
+                new GraphicBuffer(bufferWidth, bufferHeight, PIXEL_FORMAT_RGBA_8888, 1,
+                                  BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                          BufferUsage::COMPOSER_OVERLAY,
+                                  "test");
+        fillGraphicBufferColor(buffer, Rect(0, 0, bufferWidth, bufferHeight), color);
+        Transaction().setBuffer(layer, buffer).setSize(layer, bufferWidth, bufferHeight).apply();
+    }
+
+    void fillLayerColor(uint32_t mLayerType, const sp<SurfaceControl>& layer, const Color& color,
+                        int32_t bufferWidth, int32_t bufferHeight) {
+        switch (mLayerType) {
+            case ISurfaceComposerClient::eFXSurfaceBufferQueue:
+                fillBufferQueueLayerColor(layer, color, bufferWidth, bufferHeight);
+                break;
+            case ISurfaceComposerClient::eFXSurfaceBufferState:
+                fillBufferStateLayerColor(layer, color, bufferWidth, bufferHeight);
+                break;
+            default:
+                ASSERT_TRUE(false) << "unsupported layer type: " << mLayerType;
+        }
+    }
+
+    void fillLayerQuadrant(uint32_t mLayerType, const sp<SurfaceControl>& layer,
+                           int32_t bufferWidth, int32_t bufferHeight, const Color& topLeft,
                            const Color& topRight, const Color& bottomLeft,
                            const Color& bottomRight) {
-        ANativeWindow_Buffer buffer;
-        ASSERT_NO_FATAL_FAILURE(buffer = getLayerBuffer(layer));
-        ASSERT_TRUE(buffer.width % 2 == 0 && buffer.height % 2 == 0);
-
-        const int32_t halfW = buffer.width / 2;
-        const int32_t halfH = buffer.height / 2;
-        fillBufferColor(buffer, Rect(0, 0, halfW, halfH), topLeft);
-        fillBufferColor(buffer, Rect(halfW, 0, buffer.width, halfH), topRight);
-        fillBufferColor(buffer, Rect(0, halfH, halfW, buffer.height), bottomLeft);
-        fillBufferColor(buffer, Rect(halfW, halfH, buffer.width, buffer.height), bottomRight);
-
-        postLayerBuffer(layer);
+        switch (mLayerType) {
+            case ISurfaceComposerClient::eFXSurfaceBufferQueue:
+                fillBufferQueueLayerQuadrant(layer, bufferWidth, bufferHeight, topLeft, topRight,
+                                             bottomLeft, bottomRight);
+                break;
+            case ISurfaceComposerClient::eFXSurfaceBufferState:
+                fillBufferStateLayerQuadrant(layer, bufferWidth, bufferHeight, topLeft, topRight,
+                                             bottomLeft, bottomRight);
+                break;
+            default:
+                ASSERT_TRUE(false) << "unsupported layer type: " << mLayerType;
+        }
     }
 
-    sp<ScreenCapture> screenshot() {
-        sp<ScreenCapture> screenshot;
-        ScreenCapture::captureScreen(&screenshot, mLayerZBase);
+    virtual void fillBufferQueueLayerQuadrant(const sp<SurfaceControl>& layer, int32_t bufferWidth,
+                                              int32_t bufferHeight, const Color& topLeft,
+                                              const Color& topRight, const Color& bottomLeft,
+                                              const Color& bottomRight) {
+        ANativeWindow_Buffer buffer;
+        ASSERT_NO_FATAL_FAILURE(buffer = getBufferQueueLayerBuffer(layer));
+        ASSERT_TRUE(bufferWidth % 2 == 0 && bufferHeight % 2 == 0);
+
+        const int32_t halfW = bufferWidth / 2;
+        const int32_t halfH = bufferHeight / 2;
+        fillANativeWindowBufferColor(buffer, Rect(0, 0, halfW, halfH), topLeft);
+        fillANativeWindowBufferColor(buffer, Rect(halfW, 0, bufferWidth, halfH), topRight);
+        fillANativeWindowBufferColor(buffer, Rect(0, halfH, halfW, bufferHeight), bottomLeft);
+        fillANativeWindowBufferColor(buffer, Rect(halfW, halfH, bufferWidth, bufferHeight),
+                                     bottomRight);
+
+        postBufferQueueLayerBuffer(layer);
+    }
+
+    virtual void fillBufferStateLayerQuadrant(const sp<SurfaceControl>& layer, int32_t bufferWidth,
+                                              int32_t bufferHeight, const Color& topLeft,
+                                              const Color& topRight, const Color& bottomLeft,
+                                              const Color& bottomRight) {
+        sp<GraphicBuffer> buffer =
+                new GraphicBuffer(bufferWidth, bufferHeight, PIXEL_FORMAT_RGBA_8888, 1,
+                                  BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                          BufferUsage::COMPOSER_OVERLAY,
+                                  "test");
+
+        ASSERT_TRUE(bufferWidth % 2 == 0 && bufferHeight % 2 == 0);
+
+        const int32_t halfW = bufferWidth / 2;
+        const int32_t halfH = bufferHeight / 2;
+        fillGraphicBufferColor(buffer, Rect(0, 0, halfW, halfH), topLeft);
+        fillGraphicBufferColor(buffer, Rect(halfW, 0, bufferWidth, halfH), topRight);
+        fillGraphicBufferColor(buffer, Rect(0, halfH, halfW, bufferHeight), bottomLeft);
+        fillGraphicBufferColor(buffer, Rect(halfW, halfH, bufferWidth, bufferHeight), bottomRight);
+
+        Transaction().setBuffer(layer, buffer).setSize(layer, bufferWidth, bufferHeight).apply();
+    }
+
+    std::unique_ptr<ScreenCapture> screenshot() {
+        std::unique_ptr<ScreenCapture> screenshot;
+        ScreenCapture::captureScreen(&screenshot);
         return screenshot;
     }
 
@@ -376,6 +465,11 @@
     // leave room for ~256 layers
     const int32_t mLayerZBase = std::numeric_limits<int32_t>::max() - 256;
 
+    void setPositionWithResizeHelper(uint32_t layerType);
+    void setSizeBasicHelper(uint32_t layerType);
+    void setMatrixWithResizeHelper(uint32_t layerType);
+
+    sp<SurfaceControl> mBlackBgSurface;
 private:
     void SetUpDisplay() {
         mDisplay = mClient->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain);
@@ -393,21 +487,72 @@
         mBufferPostDelay = int32_t(1e6 / info.fps) * 3;
 
         mDisplayLayerStack = 0;
+
+        mBlackBgSurface = mClient->createSurface(String8("BaseSurface"), mDisplayWidth,
+                                                 mDisplayHeight, PIXEL_FORMAT_RGBA_8888,
+                                                 ISurfaceComposerClient::eFXSurfaceColor);
+
         // set layer stack (b/68888219)
         Transaction t;
         t.setDisplayLayerStack(mDisplay, mDisplayLayerStack);
+        t.setLayerStack(mBlackBgSurface, mDisplayLayerStack);
+        t.setColor(mBlackBgSurface, half3{0, 0, 0});
+        t.setLayer(mBlackBgSurface, mLayerZBase);
         t.apply();
     }
 
-    void waitForLayerBuffers() { usleep(mBufferPostDelay); }
+    void waitForLayerBuffers() {
+        // Request an empty transaction to get applied synchronously to ensure the buffer is
+        // latched.
+        Transaction().apply(true);
+        usleep(mBufferPostDelay);
+    }
 
     int32_t mBufferPostDelay;
 };
 
-TEST_F(LayerTransactionTest, SetPositionBasic) {
+class LayerTypeTransactionTest : public LayerTransactionTest,
+                                 public ::testing::WithParamInterface<uint32_t> {
+public:
+    LayerTypeTransactionTest() { mLayerType = GetParam(); }
+
+    sp<SurfaceControl> createLayer(const char* name, uint32_t width, uint32_t height,
+                                   uint32_t flags = 0) override {
+        // if the flags already have a layer type specified, return an error
+        if (flags & ISurfaceComposerClient::eFXSurfaceMask) {
+            return nullptr;
+        }
+        return LayerTransactionTest::createLayer(name, width, height, flags | mLayerType);
+    }
+
+    void fillLayerColor(const sp<SurfaceControl>& layer, const Color& color, int32_t bufferWidth,
+                        int32_t bufferHeight) {
+        ASSERT_NO_FATAL_FAILURE(LayerTransactionTest::fillLayerColor(mLayerType, layer, color,
+                                                                     bufferWidth, bufferHeight));
+    }
+
+    void fillLayerQuadrant(const sp<SurfaceControl>& layer, int32_t bufferWidth,
+                           int32_t bufferHeight, const Color& topLeft, const Color& topRight,
+                           const Color& bottomLeft, const Color& bottomRight) {
+        ASSERT_NO_FATAL_FAILURE(LayerTransactionTest::fillLayerQuadrant(mLayerType, layer,
+                                                                        bufferWidth, bufferHeight,
+                                                                        topLeft, topRight,
+                                                                        bottomLeft, bottomRight));
+    }
+
+protected:
+    uint32_t mLayerType;
+};
+
+INSTANTIATE_TEST_CASE_P(
+        LayerTypeTransactionTests, LayerTypeTransactionTest,
+        ::testing::Values(static_cast<uint32_t>(ISurfaceComposerClient::eFXSurfaceBufferQueue),
+                          static_cast<uint32_t>(ISurfaceComposerClient::eFXSurfaceBufferState)));
+
+TEST_P(LayerTypeTransactionTest, SetPositionBasic) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     {
         SCOPED_TRACE("default position");
@@ -425,10 +570,10 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetPositionRounding) {
+TEST_P(LayerTypeTransactionTest, SetPositionRounding) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     // GLES requires only 4 bits of subpixel precision during rasterization
     // XXX GLES composition does not match HWC composition due to precision
@@ -447,10 +592,10 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetPositionOutOfBounds) {
+TEST_P(LayerTypeTransactionTest, SetPositionOutOfBounds) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     Transaction().setPosition(layer, -32, -32).apply();
     {
@@ -465,10 +610,10 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetPositionPartiallyOutOfBounds) {
+TEST_P(LayerTypeTransactionTest, SetPositionPartiallyOutOfBounds) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     // partially out of bounds
     Transaction().setPosition(layer, -30, -30).apply();
@@ -486,10 +631,10 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetPositionWithResize) {
+void LayerTransactionTest::setPositionWithResizeHelper(uint32_t layerType) {
     sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32, layerType));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerType, layer, Color::RED, 32, 32));
 
     // setPosition is applied immediately by default, with or without resize
     // pending
@@ -497,21 +642,43 @@
     {
         SCOPED_TRACE("resize pending");
         auto shot = screenshot();
-        shot->expectColor(Rect(5, 10, 37, 42), Color::RED);
-        shot->expectBorder(Rect(5, 10, 37, 42), Color::BLACK);
+        Rect rect;
+        switch (layerType) {
+            case ISurfaceComposerClient::eFXSurfaceBufferQueue:
+                rect = {5, 10, 37, 42};
+                break;
+            case ISurfaceComposerClient::eFXSurfaceBufferState:
+                rect = {5, 10, 69, 74};
+                break;
+            default:
+                ASSERT_FALSE(true) << "Unsupported layer type";
+        }
+
+        shot->expectColor(rect, Color::RED);
+        shot->expectBorder(rect, Color::BLACK);
     }
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerType, layer, Color::RED, 64, 64));
     {
         SCOPED_TRACE("resize applied");
         screenshot()->expectColor(Rect(5, 10, 69, 74), Color::RED);
     }
 }
 
-TEST_F(LayerTransactionTest, SetPositionWithNextResize) {
+TEST_F(LayerTransactionTest, SetPositionWithResize_BufferQueue) {
+    ASSERT_NO_FATAL_FAILURE(
+            setPositionWithResizeHelper(ISurfaceComposerClient::eFXSurfaceBufferQueue));
+}
+
+TEST_F(LayerTransactionTest, SetPositionWithResize_BufferState) {
+    ASSERT_NO_FATAL_FAILURE(
+            setPositionWithResizeHelper(ISurfaceComposerClient::eFXSurfaceBufferState));
+}
+
+TEST_F(LayerTransactionTest, SetPositionWithNextResize_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
 
     // request setPosition to be applied with the next resize
     Transaction().setPosition(layer, 5, 10).setGeometryAppliesWithResize(layer).apply();
@@ -533,17 +700,17 @@
     }
 
     // finally resize and latch the buffer
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 64, 64));
     {
         SCOPED_TRACE("new position applied");
         screenshot()->expectColor(Rect(15, 20, 79, 84), Color::RED);
     }
 }
 
-TEST_F(LayerTransactionTest, SetPositionWithNextResizeScaleToWindow) {
+TEST_F(LayerTransactionTest, SetPositionWithNextResizeScaleToWindow_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
 
     // setPosition is not immediate even with SCALE_TO_WINDOW override
     Transaction()
@@ -557,27 +724,38 @@
         screenshot()->expectColor(Rect(0, 0, 64, 64), Color::RED);
     }
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 64, 64));
     {
         SCOPED_TRACE("new position applied");
         screenshot()->expectColor(Rect(5, 10, 69, 74), Color::RED);
     }
 }
 
-TEST_F(LayerTransactionTest, SetSizeBasic) {
+void LayerTransactionTest::setSizeBasicHelper(uint32_t layerType) {
     sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32, layerType));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerType, layer, Color::RED, 32, 32));
 
     Transaction().setSize(layer, 64, 64).apply();
     {
         SCOPED_TRACE("resize pending");
         auto shot = screenshot();
-        shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
-        shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+        Rect rect;
+        switch (layerType) {
+            case ISurfaceComposerClient::eFXSurfaceBufferQueue:
+                rect = {0, 0, 32, 32};
+                break;
+            case ISurfaceComposerClient::eFXSurfaceBufferState:
+                rect = {0, 0, 64, 64};
+                break;
+            default:
+                ASSERT_FALSE(true) << "Unsupported layer type";
+        }
+        shot->expectColor(rect, Color::RED);
+        shot->expectBorder(rect, Color::BLACK);
     }
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerType, layer, Color::RED, 64, 64));
     {
         SCOPED_TRACE("resize applied");
         auto shot = screenshot();
@@ -586,14 +764,22 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetSizeInvalid) {
+TEST_F(LayerTransactionTest, SetSizeBasic_BufferQueue) {
+    setSizeBasicHelper(ISurfaceComposerClient::eFXSurfaceBufferQueue);
+}
+
+TEST_F(LayerTransactionTest, SetSizeBasic_BufferState) {
+    setSizeBasicHelper(ISurfaceComposerClient::eFXSurfaceBufferState);
+}
+
+TEST_P(LayerTypeTransactionTest, SetSizeInvalid) {
     // cannot test robustness against invalid sizes (zero or really huge)
 }
 
-TEST_F(LayerTransactionTest, SetSizeWithScaleToWindow) {
+TEST_P(LayerTypeTransactionTest, SetSizeWithScaleToWindow) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     // setSize is immediate with SCALE_TO_WINDOW, unlike setPosition
     Transaction()
@@ -603,13 +789,13 @@
     screenshot()->expectColor(Rect(0, 0, 64, 64), Color::RED);
 }
 
-TEST_F(LayerTransactionTest, SetZBasic) {
+TEST_P(LayerTypeTransactionTest, SetZBasic) {
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
 
     Transaction().setLayer(layerR, mLayerZBase + 1).apply();
     {
@@ -624,38 +810,43 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetZNegative) {
+TEST_P(LayerTypeTransactionTest, SetZNegative) {
+    sp<SurfaceControl> parent =
+            LayerTransactionTest::createLayer("Parent", mDisplayWidth, mDisplayHeight,
+                                              ISurfaceComposerClient::eFXSurfaceContainer);
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
 
+    Transaction()
+            .reparent(layerR, parent->getHandle())
+            .reparent(layerG, parent->getHandle())
+            .apply();
     Transaction().setLayer(layerR, -1).setLayer(layerG, -2).apply();
     {
         SCOPED_TRACE("layerR");
-        sp<ScreenCapture> screenshot;
-        ScreenCapture::captureScreen(&screenshot, -2, -1);
-        screenshot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
     }
 
     Transaction().setLayer(layerR, -3).apply();
     {
         SCOPED_TRACE("layerG");
-        sp<ScreenCapture> screenshot;
-        ScreenCapture::captureScreen(&screenshot, -3, -1);
-        screenshot->expectColor(Rect(0, 0, 32, 32), Color::GREEN);
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::GREEN);
     }
 }
 
-TEST_F(LayerTransactionTest, SetRelativeZBasic) {
+TEST_P(LayerTypeTransactionTest, SetRelativeZBasic) {
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
 
     Transaction()
             .setPosition(layerG, 16, 16)
@@ -677,36 +868,44 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetRelativeZNegative) {
+TEST_P(LayerTypeTransactionTest, SetRelativeZNegative) {
+    sp<SurfaceControl> parent =
+            LayerTransactionTest::createLayer("Parent", mDisplayWidth, mDisplayHeight,
+                                              ISurfaceComposerClient::eFXSurfaceContainer);
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
     sp<SurfaceControl> layerB;
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerB = createLayer("test B", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerB, Color::BLUE));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerB, Color::BLUE, 32, 32));
+
+    Transaction()
+            .reparent(layerB, parent->getHandle())
+            .apply();
 
     // layerR = mLayerZBase, layerG = layerR - 1, layerB = -2
     Transaction().setRelativeLayer(layerG, layerR->getHandle(), -1).setLayer(layerB, -2).apply();
 
-    sp<ScreenCapture> screenshot;
+    std::unique_ptr<ScreenCapture> screenshot;
     // only layerB is in this range
-    ScreenCapture::captureScreen(&screenshot, -2, -1);
+    sp<IBinder> parentHandle = parent->getHandle();
+    ScreenCapture::captureLayers(&screenshot, parentHandle);
     screenshot->expectColor(Rect(0, 0, 32, 32), Color::BLUE);
 }
 
-TEST_F(LayerTransactionTest, SetRelativeZGroup) {
+TEST_P(LayerTypeTransactionTest, SetRelativeZGroup) {
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
     sp<SurfaceControl> layerB;
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerB = createLayer("test B", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerB, Color::BLUE));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerB, Color::BLUE, 32, 32));
 
     // layerR = 0, layerG = layerR + 3, layerB = 2
     Transaction()
@@ -764,14 +963,14 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetRelativeZBug64572777) {
+TEST_P(LayerTypeTransactionTest, SetRelativeZBug64572777) {
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
 
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
 
     Transaction()
             .setPosition(layerG, 16, 16)
@@ -783,10 +982,10 @@
     screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
 }
 
-TEST_F(LayerTransactionTest, SetFlagsHidden) {
+TEST_P(LayerTypeTransactionTest, SetFlagsHidden) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     Transaction().setFlags(layer, layer_state_t::eLayerHidden, layer_state_t::eLayerHidden).apply();
     {
@@ -801,14 +1000,14 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetFlagsOpaque) {
+TEST_P(LayerTypeTransactionTest, SetFlagsOpaque) {
     const Color translucentRed = {100, 0, 0, 100};
     sp<SurfaceControl> layerR;
     sp<SurfaceControl> layerG;
     ASSERT_NO_FATAL_FAILURE(layerR = createLayer("test R", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, translucentRed));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, translucentRed, 32, 32));
     ASSERT_NO_FATAL_FAILURE(layerG = createLayer("test G", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerG, Color::GREEN, 32, 32));
 
     Transaction()
             .setLayer(layerR, mLayerZBase + 1)
@@ -827,10 +1026,10 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetFlagsSecure) {
+TEST_P(LayerTypeTransactionTest, SetFlagsSecure) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     sp<ISurfaceComposer> composer = ComposerService::getComposerService();
     sp<GraphicBuffer> outBuffer;
@@ -838,28 +1037,26 @@
             .setFlags(layer, layer_state_t::eLayerSecure, layer_state_t::eLayerSecure)
             .apply(true);
     ASSERT_EQ(PERMISSION_DENIED,
-              composer->captureScreen(mDisplay, &outBuffer, Rect(), 0, 0, mLayerZBase, mLayerZBase,
-                                      false));
+              composer->captureScreen(mDisplay, &outBuffer, Rect(), 0, 0, false));
 
     Transaction().setFlags(layer, 0, layer_state_t::eLayerSecure).apply(true);
     ASSERT_EQ(NO_ERROR,
-              composer->captureScreen(mDisplay, &outBuffer, Rect(), 0, 0, mLayerZBase, mLayerZBase,
-                                      false));
+              composer->captureScreen(mDisplay, &outBuffer, Rect(), 0, 0, false));
 }
 
-TEST_F(LayerTransactionTest, SetTransparentRegionHintBasic) {
+TEST_F(LayerTransactionTest, SetTransparentRegionHintBasic_BufferQueue) {
     const Rect top(0, 0, 32, 16);
     const Rect bottom(0, 16, 32, 32);
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
 
     ANativeWindow_Buffer buffer;
-    ASSERT_NO_FATAL_FAILURE(buffer = getLayerBuffer(layer));
-    ASSERT_NO_FATAL_FAILURE(fillBufferColor(buffer, top, Color::TRANSPARENT));
-    ASSERT_NO_FATAL_FAILURE(fillBufferColor(buffer, bottom, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(buffer = getBufferQueueLayerBuffer(layer));
+    ASSERT_NO_FATAL_FAILURE(fillANativeWindowBufferColor(buffer, top, Color::TRANSPARENT));
+    ASSERT_NO_FATAL_FAILURE(fillANativeWindowBufferColor(buffer, bottom, Color::RED));
     // setTransparentRegionHint always applies to the following buffer
     Transaction().setTransparentRegionHint(layer, Region(top)).apply();
-    ASSERT_NO_FATAL_FAILURE(postLayerBuffer(layer));
+    ASSERT_NO_FATAL_FAILURE(postBufferQueueLayerBuffer(layer));
     {
         SCOPED_TRACE("top transparent");
         auto shot = screenshot();
@@ -875,10 +1072,10 @@
         shot->expectColor(bottom, Color::RED);
     }
 
-    ASSERT_NO_FATAL_FAILURE(buffer = getLayerBuffer(layer));
-    ASSERT_NO_FATAL_FAILURE(fillBufferColor(buffer, top, Color::RED));
-    ASSERT_NO_FATAL_FAILURE(fillBufferColor(buffer, bottom, Color::TRANSPARENT));
-    ASSERT_NO_FATAL_FAILURE(postLayerBuffer(layer));
+    ASSERT_NO_FATAL_FAILURE(buffer = getBufferQueueLayerBuffer(layer));
+    ASSERT_NO_FATAL_FAILURE(fillANativeWindowBufferColor(buffer, top, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillANativeWindowBufferColor(buffer, bottom, Color::TRANSPARENT));
+    ASSERT_NO_FATAL_FAILURE(postBufferQueueLayerBuffer(layer));
     {
         SCOPED_TRACE("bottom transparent");
         auto shot = screenshot();
@@ -887,7 +1084,58 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetTransparentRegionHintOutOfBounds) {
+TEST_F(LayerTransactionTest, SetTransparentRegionHintBasic_BufferState) {
+    const Rect top(0, 0, 32, 16);
+    const Rect bottom(0, 16, 32, 32);
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<GraphicBuffer> buffer =
+            new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                              BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                      BufferUsage::COMPOSER_OVERLAY,
+                              "test");
+
+    ASSERT_NO_FATAL_FAILURE(fillGraphicBufferColor(buffer, top, Color::TRANSPARENT));
+    ASSERT_NO_FATAL_FAILURE(fillGraphicBufferColor(buffer, bottom, Color::RED));
+    Transaction()
+            .setTransparentRegionHint(layer, Region(top))
+            .setBuffer(layer, buffer)
+            .setSize(layer, 32, 32)
+            .apply();
+    {
+        SCOPED_TRACE("top transparent");
+        auto shot = screenshot();
+        shot->expectColor(top, Color::BLACK);
+        shot->expectColor(bottom, Color::RED);
+    }
+
+    Transaction().setTransparentRegionHint(layer, Region(bottom)).apply();
+    {
+        SCOPED_TRACE("transparent region hint intermediate");
+        auto shot = screenshot();
+        shot->expectColor(top, Color::BLACK);
+        shot->expectColor(bottom, Color::BLACK);
+    }
+
+    buffer = new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                               BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                       BufferUsage::COMPOSER_OVERLAY,
+                               "test");
+
+    ASSERT_NO_FATAL_FAILURE(fillGraphicBufferColor(buffer, top, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillGraphicBufferColor(buffer, bottom, Color::TRANSPARENT));
+    Transaction().setBuffer(layer, buffer).setSize(layer, 32, 32).apply();
+    {
+        SCOPED_TRACE("bottom transparent");
+        auto shot = screenshot();
+        shot->expectColor(top, Color::RED);
+        shot->expectColor(bottom, Color::BLACK);
+    }
+}
+
+TEST_P(LayerTypeTransactionTest, SetTransparentRegionHintOutOfBounds) {
     sp<SurfaceControl> layerTransparent;
     sp<SurfaceControl> layerR;
     ASSERT_NO_FATAL_FAILURE(layerTransparent = createLayer("test transparent", 32, 32));
@@ -900,18 +1148,18 @@
             .setPosition(layerR, 16, 16)
             .setLayer(layerR, mLayerZBase + 1)
             .apply();
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerTransparent, Color::TRANSPARENT));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerTransparent, Color::TRANSPARENT, 32, 32));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerR, Color::RED, 32, 32));
     screenshot()->expectColor(Rect(16, 16, 48, 48), Color::RED);
 }
 
-TEST_F(LayerTransactionTest, SetAlphaBasic) {
+TEST_P(LayerTypeTransactionTest, SetAlphaBasic) {
     sp<SurfaceControl> layer1;
     sp<SurfaceControl> layer2;
     ASSERT_NO_FATAL_FAILURE(layer1 = createLayer("test 1", 32, 32));
     ASSERT_NO_FATAL_FAILURE(layer2 = createLayer("test 2", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer1, {64, 0, 0, 255}));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer2, {0, 64, 0, 255}));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer1, {64, 0, 0, 255}, 32, 32));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer2, {0, 64, 0, 255}, 32, 32));
 
     Transaction()
             .setAlpha(layer1, 0.25f)
@@ -931,11 +1179,11 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetAlphaClamped) {
+TEST_P(LayerTypeTransactionTest, SetAlphaClamped) {
     const Color color = {64, 0, 0, 255};
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, color));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, color, 32, 32));
 
     Transaction().setAlpha(layer, 2.0f).apply();
     {
@@ -954,7 +1202,7 @@
     sp<SurfaceControl> bufferLayer;
     sp<SurfaceControl> colorLayer;
     ASSERT_NO_FATAL_FAILURE(bufferLayer = createLayer("test bg", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(bufferLayer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(bufferLayer, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(
             colorLayer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceColor));
 
@@ -989,7 +1237,7 @@
     sp<SurfaceControl> bufferLayer;
     sp<SurfaceControl> colorLayer;
     ASSERT_NO_FATAL_FAILURE(bufferLayer = createLayer("test bg", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(bufferLayer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(bufferLayer, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(
             colorLayer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceColor));
 
@@ -1014,7 +1262,7 @@
     sp<SurfaceControl> colorLayer;
     ASSERT_NO_FATAL_FAILURE(bufferLayer = createLayer("test bg", 32, 32));
     ASSERT_NO_FATAL_FAILURE(parentLayer = createLayer("parentWithAlpha", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(bufferLayer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(bufferLayer, Color::RED, 32, 32));
     ASSERT_NO_FATAL_FAILURE(colorLayer = createLayer(
             "childWithColor", 32, 32, ISurfaceComposerClient::eFXSurfaceColor));
 
@@ -1034,20 +1282,20 @@
                               tolerance);
 }
 
-TEST_F(LayerTransactionTest, SetColorWithBuffer) {
+TEST_P(LayerTypeTransactionTest, SetColorWithBuffer) {
     sp<SurfaceControl> bufferLayer;
     ASSERT_NO_FATAL_FAILURE(bufferLayer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(bufferLayer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(bufferLayer, Color::RED, 32, 32));
 
     // color is ignored
     Transaction().setColor(bufferLayer, half3(0.0f, 1.0f, 0.0f)).apply();
     screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
 }
 
-TEST_F(LayerTransactionTest, SetLayerStackBasic) {
+TEST_P(LayerTypeTransactionTest, SetLayerStackBasic) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     Transaction().setLayerStack(layer, mDisplayLayerStack + 1).apply();
     {
@@ -1062,11 +1310,11 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetMatrixBasic) {
+TEST_P(LayerTypeTransactionTest, SetMatrixBasic) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
     ASSERT_NO_FATAL_FAILURE(
-            fillLayerQuadrant(layer, Color::RED, Color::GREEN, Color::BLUE, Color::WHITE));
+            fillLayerQuadrant(layer, 32, 32, Color::RED, Color::GREEN, Color::BLUE, Color::WHITE));
 
     Transaction().setMatrix(layer, 1.0f, 0.0f, 0.0f, 1.0f).setPosition(layer, 0, 0).apply();
     {
@@ -1104,11 +1352,11 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetMatrixRot45) {
+TEST_P(LayerTypeTransactionTest, SetMatrixRot45) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
     ASSERT_NO_FATAL_FAILURE(
-            fillLayerQuadrant(layer, Color::RED, Color::GREEN, Color::BLUE, Color::WHITE));
+            fillLayerQuadrant(layer, 32, 32, Color::RED, Color::GREEN, Color::BLUE, Color::WHITE));
 
     const float rot = M_SQRT1_2; // 45 degrees
     const float trans = M_SQRT2 * 16.0f;
@@ -1127,31 +1375,52 @@
     shot->expectColor(get8x8Rect(2 * unit, 3 * unit), Color::WHITE);
 }
 
-TEST_F(LayerTransactionTest, SetMatrixWithResize) {
+void LayerTransactionTest::setMatrixWithResizeHelper(uint32_t layerType) {
     sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32, layerType));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerType, layer, Color::RED, 32, 32));
 
     // setMatrix is applied after any pending resize, unlike setPosition
     Transaction().setMatrix(layer, 2.0f, 0.0f, 0.0f, 2.0f).setSize(layer, 64, 64).apply();
     {
         SCOPED_TRACE("resize pending");
         auto shot = screenshot();
-        shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
-        shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+        Rect rect;
+        switch (layerType) {
+            case ISurfaceComposerClient::eFXSurfaceBufferQueue:
+                rect = {0, 0, 32, 32};
+                break;
+            case ISurfaceComposerClient::eFXSurfaceBufferState:
+                rect = {0, 0, 128, 128};
+                break;
+            default:
+                ASSERT_FALSE(true) << "Unsupported layer type";
+        }
+        shot->expectColor(rect, Color::RED);
+        shot->expectBorder(rect, Color::BLACK);
     }
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layerType, layer, Color::RED, 64, 64));
     {
         SCOPED_TRACE("resize applied");
         screenshot()->expectColor(Rect(0, 0, 128, 128), Color::RED);
     }
 }
 
-TEST_F(LayerTransactionTest, SetMatrixWithScaleToWindow) {
+TEST_F(LayerTransactionTest, SetMatrixWithResize_BufferQueue) {
+    ASSERT_NO_FATAL_FAILURE(
+            setMatrixWithResizeHelper(ISurfaceComposerClient::eFXSurfaceBufferQueue));
+}
+
+TEST_F(LayerTransactionTest, SetMatrixWithResize_BufferState) {
+    ASSERT_NO_FATAL_FAILURE(
+            setMatrixWithResizeHelper(ISurfaceComposerClient::eFXSurfaceBufferState));
+}
+
+TEST_P(LayerTypeTransactionTest, SetMatrixWithScaleToWindow) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED, 32, 32));
 
     // setMatrix is immediate with SCALE_TO_WINDOW, unlike setPosition
     Transaction()
@@ -1162,11 +1431,11 @@
     screenshot()->expectColor(Rect(0, 0, 128, 128), Color::RED);
 }
 
-TEST_F(LayerTransactionTest, SetOverrideScalingModeBasic) {
+TEST_P(LayerTypeTransactionTest, SetOverrideScalingModeBasic) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
     ASSERT_NO_FATAL_FAILURE(
-            fillLayerQuadrant(layer, Color::RED, Color::GREEN, Color::BLUE, Color::WHITE));
+            fillLayerQuadrant(layer, 32, 32, Color::RED, Color::GREEN, Color::BLUE, Color::WHITE));
 
     // XXX SCALE_CROP is not respected; calling setSize and
     // setOverrideScalingMode in separate transactions does not work
@@ -1182,10 +1451,36 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetCropBasic) {
+TEST_P(LayerTypeTransactionTest, RefreshRateIsInitialized) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+
+    sp<IBinder> handle = layer->getHandle();
+    ASSERT_TRUE(handle != nullptr);
+
+    FrameStats frameStats;
+    mClient->getLayerFrameStats(handle, &frameStats);
+
+    ASSERT_GT(frameStats.refreshPeriodNano, static_cast<nsecs_t>(0));
+}
+
+TEST_F(LayerTransactionTest, SetCropBasic_BufferQueue) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
+    const Rect crop(8, 8, 24, 24);
+
+    Transaction().setCrop_legacy(layer, crop).apply();
+    auto shot = screenshot();
+    shot->expectColor(crop, Color::RED);
+    shot->expectBorder(crop, Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetCropBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
     const Rect crop(8, 8, 24, 24);
 
     Transaction().setCrop(layer, crop).apply();
@@ -1194,10 +1489,29 @@
     shot->expectBorder(crop, Color::BLACK);
 }
 
-TEST_F(LayerTransactionTest, SetCropEmpty) {
+TEST_F(LayerTransactionTest, SetCropEmpty_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
+
+    {
+        SCOPED_TRACE("empty rect");
+        Transaction().setCrop_legacy(layer, Rect(8, 8, 8, 8)).apply();
+        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    }
+
+    {
+        SCOPED_TRACE("negative rect");
+        Transaction().setCrop_legacy(layer, Rect(8, 8, 0, 0)).apply();
+        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    }
+}
+
+TEST_F(LayerTransactionTest, SetCropEmpty_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
 
     {
         SCOPED_TRACE("empty rect");
@@ -1212,10 +1526,22 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetCropOutOfBounds) {
+TEST_F(LayerTransactionTest, SetCropOutOfBounds_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
+
+    Transaction().setCrop_legacy(layer, Rect(-128, -64, 128, 64)).apply();
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetCropOutOfBounds_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
 
     Transaction().setCrop(layer, Rect(-128, -64, 128, 64)).apply();
     auto shot = screenshot();
@@ -1223,10 +1549,24 @@
     shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
 }
 
-TEST_F(LayerTransactionTest, SetCropWithTranslation) {
+TEST_F(LayerTransactionTest, SetCropWithTranslation_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
+
+    const Point position(32, 32);
+    const Rect crop(8, 8, 24, 24);
+    Transaction().setPosition(layer, position.x, position.y).setCrop_legacy(layer, crop).apply();
+    auto shot = screenshot();
+    shot->expectColor(crop + position, Color::RED);
+    shot->expectBorder(crop + position, Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetCropWithTranslation_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
 
     const Point position(32, 32);
     const Rect crop(8, 8, 24, 24);
@@ -1236,10 +1576,26 @@
     shot->expectBorder(crop + position, Color::BLACK);
 }
 
-TEST_F(LayerTransactionTest, SetCropWithScale) {
+TEST_F(LayerTransactionTest, SetCropWithScale_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
+
+    // crop is affected by matrix
+    Transaction()
+            .setMatrix(layer, 2.0f, 0.0f, 0.0f, 2.0f)
+            .setCrop_legacy(layer, Rect(8, 8, 24, 24))
+            .apply();
+    auto shot = screenshot();
+    shot->expectColor(Rect(16, 16, 48, 48), Color::RED);
+    shot->expectBorder(Rect(16, 16, 48, 48), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetCropWithScale_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
 
     // crop is affected by matrix
     Transaction()
@@ -1251,13 +1607,13 @@
     shot->expectBorder(Rect(16, 16, 48, 48), Color::BLACK);
 }
 
-TEST_F(LayerTransactionTest, SetCropWithResize) {
+TEST_F(LayerTransactionTest, SetCropWithResize_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
 
-    // setCrop is applied immediately by default, with or without resize pending
-    Transaction().setCrop(layer, Rect(8, 8, 24, 24)).setSize(layer, 16, 16).apply();
+    // setCrop_legacy is applied immediately by default, with or without resize pending
+    Transaction().setCrop_legacy(layer, Rect(8, 8, 24, 24)).setSize(layer, 16, 16).apply();
     {
         SCOPED_TRACE("resize pending");
         auto shot = screenshot();
@@ -1265,7 +1621,7 @@
         shot->expectBorder(Rect(8, 8, 24, 24), Color::BLACK);
     }
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 16, 16));
     {
         SCOPED_TRACE("resize applied");
         auto shot = screenshot();
@@ -1274,19 +1630,46 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetCropWithNextResize) {
+TEST_F(LayerTransactionTest, SetCropWithResize_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
+
+    // setCrop_legacy is applied immediately by default, with or without resize pending
+    Transaction().setCrop(layer, Rect(8, 8, 24, 24)).setSize(layer, 16, 16).apply();
+    {
+        SCOPED_TRACE("new buffer pending");
+        auto shot = screenshot();
+        shot->expectColor(Rect(8, 8, 16, 16), Color::RED);
+        shot->expectBorder(Rect(8, 8, 16, 16), Color::BLACK);
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 16, 16));
+    {
+        SCOPED_TRACE("new buffer");
+        auto shot = screenshot();
+        shot->expectColor(Rect(8, 8, 16, 16), Color::RED);
+        shot->expectBorder(Rect(8, 8, 16, 16), Color::BLACK);
+    }
+}
+
+TEST_F(LayerTransactionTest, SetCropWithNextResize_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
 
-    // request setCrop to be applied with the next resize
-    Transaction().setCrop(layer, Rect(8, 8, 24, 24)).setGeometryAppliesWithResize(layer).apply();
+    // request setCrop_legacy to be applied with the next resize
+    Transaction()
+            .setCrop_legacy(layer, Rect(8, 8, 24, 24))
+            .setGeometryAppliesWithResize(layer)
+            .apply();
     {
         SCOPED_TRACE("waiting for next resize");
         screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
     }
 
-    Transaction().setCrop(layer, Rect(4, 4, 12, 12)).apply();
+    Transaction().setCrop_legacy(layer, Rect(4, 4, 12, 12)).apply();
     {
         SCOPED_TRACE("pending crop modified");
         screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
@@ -1299,7 +1682,7 @@
     }
 
     // finally resize
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 16, 16));
     {
         SCOPED_TRACE("new crop applied");
         auto shot = screenshot();
@@ -1308,14 +1691,49 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetCropWithNextResizeScaleToWindow) {
+TEST_F(LayerTransactionTest, SetCropWithNextResize_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
+
+    // request setCrop_legacy to be applied with the next resize
+    Transaction().setCrop(layer, Rect(8, 8, 24, 24)).setGeometryAppliesWithResize(layer).apply();
+    {
+        SCOPED_TRACE("set crop 1");
+        screenshot()->expectColor(Rect(8, 8, 24, 24), Color::RED);
+    }
+
+    Transaction().setCrop(layer, Rect(4, 4, 12, 12)).apply();
+    {
+        SCOPED_TRACE("set crop 2");
+        screenshot()->expectColor(Rect(4, 4, 12, 12), Color::RED);
+    }
+
+    Transaction().setSize(layer, 16, 16).apply();
+    {
+        SCOPED_TRACE("resize");
+        screenshot()->expectColor(Rect(4, 4, 12, 12), Color::RED);
+    }
+
+    // finally resize
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 16, 16));
+    {
+        SCOPED_TRACE("new buffer");
+        auto shot = screenshot();
+        shot->expectColor(Rect(4, 4, 12, 12), Color::RED);
+        shot->expectBorder(Rect(4, 4, 12, 12), Color::BLACK);
+    }
+}
+
+TEST_F(LayerTransactionTest, SetCropWithNextResizeScaleToWindow_BufferQueue) {
     sp<SurfaceControl> layer;
     ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 32, 32));
 
-    // setCrop is not immediate even with SCALE_TO_WINDOW override
+    // setCrop_legacy is not immediate even with SCALE_TO_WINDOW override
     Transaction()
-            .setCrop(layer, Rect(4, 4, 12, 12))
+            .setCrop_legacy(layer, Rect(4, 4, 12, 12))
             .setSize(layer, 16, 16)
             .setOverrideScalingMode(layer, NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW)
             .setGeometryAppliesWithResize(layer)
@@ -1329,7 +1747,7 @@
 
     // XXX crop is never latched without other geometry change (b/69315677)
     Transaction().setPosition(layer, 1, 0).setGeometryAppliesWithResize(layer).apply();
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(layer, Color::RED, 16, 16));
     Transaction().setPosition(layer, 0, 0).apply();
     {
         SCOPED_TRACE("new crop applied");
@@ -1339,173 +1757,346 @@
     }
 }
 
-TEST_F(LayerTransactionTest, SetFinalCropBasic) {
+TEST_F(LayerTransactionTest, SetCropWithNextResizeScaleToWindow_BufferState) {
     sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-    const Rect crop(8, 8, 24, 24);
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
 
-    // same as in SetCropBasic
-    Transaction().setFinalCrop(layer, crop).apply();
-    auto shot = screenshot();
-    shot->expectColor(crop, Color::RED);
-    shot->expectBorder(crop, Color::BLACK);
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropEmpty) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // same as in SetCropEmpty
-    {
-        SCOPED_TRACE("empty rect");
-        Transaction().setFinalCrop(layer, Rect(8, 8, 8, 8)).apply();
-        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
-    }
-
-    {
-        SCOPED_TRACE("negative rect");
-        Transaction().setFinalCrop(layer, Rect(8, 8, 0, 0)).apply();
-        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
-    }
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropOutOfBounds) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // same as in SetCropOutOfBounds
-    Transaction().setFinalCrop(layer, Rect(-128, -64, 128, 64)).apply();
-    auto shot = screenshot();
-    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
-    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropWithTranslation) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // final crop is applied post-translation
-    Transaction().setPosition(layer, 16, 16).setFinalCrop(layer, Rect(8, 8, 24, 24)).apply();
-    auto shot = screenshot();
-    shot->expectColor(Rect(16, 16, 24, 24), Color::RED);
-    shot->expectBorder(Rect(16, 16, 24, 24), Color::BLACK);
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropWithScale) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // final crop is not affected by matrix
+    // all properties are applied immediate so setGeometryAppliesWithResize has no effect
     Transaction()
-            .setMatrix(layer, 2.0f, 0.0f, 0.0f, 2.0f)
-            .setFinalCrop(layer, Rect(8, 8, 24, 24))
-            .apply();
-    auto shot = screenshot();
-    shot->expectColor(Rect(8, 8, 24, 24), Color::RED);
-    shot->expectBorder(Rect(8, 8, 24, 24), Color::BLACK);
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropWithResize) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // same as in SetCropWithResize
-    Transaction().setFinalCrop(layer, Rect(8, 8, 24, 24)).setSize(layer, 16, 16).apply();
-    {
-        SCOPED_TRACE("resize pending");
-        auto shot = screenshot();
-        shot->expectColor(Rect(8, 8, 24, 24), Color::RED);
-        shot->expectBorder(Rect(8, 8, 24, 24), Color::BLACK);
-    }
-
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-    {
-        SCOPED_TRACE("resize applied");
-        auto shot = screenshot();
-        shot->expectColor(Rect(8, 8, 16, 16), Color::RED);
-        shot->expectBorder(Rect(8, 8, 16, 16), Color::BLACK);
-    }
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropWithNextResize) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // same as in SetCropWithNextResize
-    Transaction()
-            .setFinalCrop(layer, Rect(8, 8, 24, 24))
-            .setGeometryAppliesWithResize(layer)
-            .apply();
-    {
-        SCOPED_TRACE("waiting for next resize");
-        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
-    }
-
-    Transaction().setFinalCrop(layer, Rect(4, 4, 12, 12)).apply();
-    {
-        SCOPED_TRACE("pending final crop modified");
-        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
-    }
-
-    Transaction().setSize(layer, 16, 16).apply();
-    {
-        SCOPED_TRACE("resize pending");
-        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::RED);
-    }
-
-    // finally resize
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-    {
-        SCOPED_TRACE("new final crop applied");
-        auto shot = screenshot();
-        shot->expectColor(Rect(4, 4, 12, 12), Color::RED);
-        shot->expectBorder(Rect(4, 4, 12, 12), Color::BLACK);
-    }
-}
-
-TEST_F(LayerTransactionTest, SetFinalCropWithNextResizeScaleToWindow) {
-    sp<SurfaceControl> layer;
-    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-
-    // same as in SetCropWithNextResizeScaleToWindow
-    Transaction()
-            .setFinalCrop(layer, Rect(4, 4, 12, 12))
+            .setCrop(layer, Rect(4, 4, 12, 12))
             .setSize(layer, 16, 16)
             .setOverrideScalingMode(layer, NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW)
             .setGeometryAppliesWithResize(layer)
             .apply();
     {
-        SCOPED_TRACE("new final crop pending");
-        auto shot = screenshot();
-        shot->expectColor(Rect(0, 0, 16, 16), Color::RED);
-        shot->expectBorder(Rect(0, 0, 16, 16), Color::BLACK);
-    }
-
-    // XXX final crop is never latched without other geometry change (b/69315677)
-    Transaction().setPosition(layer, 1, 0).setGeometryAppliesWithResize(layer).apply();
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, Color::RED));
-    Transaction().setPosition(layer, 0, 0).apply();
-    {
-        SCOPED_TRACE("new final crop applied");
+        SCOPED_TRACE("new crop pending");
         auto shot = screenshot();
         shot->expectColor(Rect(4, 4, 12, 12), Color::RED);
         shot->expectBorder(Rect(4, 4, 12, 12), Color::BLACK);
     }
+
+    Transaction().setPosition(layer, 1, 0).setGeometryAppliesWithResize(layer).apply();
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 16, 16));
+    Transaction().setPosition(layer, 0, 0).apply();
+    {
+        SCOPED_TRACE("new crop applied");
+        auto shot = screenshot();
+        shot->expectColor(Rect(4, 4, 12, 12), Color::RED);
+        shot->expectBorder(Rect(4, 4, 12, 12), Color::BLACK);
+    }
+}
+
+TEST_F(LayerTransactionTest, SetBufferBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
+
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetBufferMultipleBuffers_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
+
+    {
+        SCOPED_TRACE("set buffer 1");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+        shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::BLUE, 32, 32));
+
+    {
+        SCOPED_TRACE("set buffer 2");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::BLUE);
+        shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
+
+    {
+        SCOPED_TRACE("set buffer 3");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+        shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+    }
+}
+
+TEST_F(LayerTransactionTest, SetBufferMultipleLayers_BufferState) {
+    sp<SurfaceControl> layer1;
+    ASSERT_NO_FATAL_FAILURE(
+            layer1 = createLayer("test", 64, 64, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<SurfaceControl> layer2;
+    ASSERT_NO_FATAL_FAILURE(
+            layer2 = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer1, Color::RED, 64, 64));
+
+    {
+        SCOPED_TRACE("set layer 1 buffer red");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 64, 64), Color::RED);
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer2, Color::BLUE, 32, 32));
+
+    {
+        SCOPED_TRACE("set layer 2 buffer blue");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::BLUE);
+        shot->expectColor(Rect(0, 32, 64, 64), Color::RED);
+        shot->expectColor(Rect(0, 32, 32, 64), Color::RED);
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer1, Color::GREEN, 64, 64));
+    {
+        SCOPED_TRACE("set layer 1 buffer green");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::BLUE);
+        shot->expectColor(Rect(0, 32, 64, 64), Color::GREEN);
+        shot->expectColor(Rect(0, 32, 32, 64), Color::GREEN);
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer2, Color::WHITE, 32, 32));
+
+    {
+        SCOPED_TRACE("set layer 2 buffer white");
+        auto shot = screenshot();
+        shot->expectColor(Rect(0, 0, 32, 32), Color::WHITE);
+        shot->expectColor(Rect(0, 32, 64, 64), Color::GREEN);
+        shot->expectColor(Rect(0, 32, 32, 64), Color::GREEN);
+    }
+}
+
+TEST_F(LayerTransactionTest, SetTransformRotate90_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerQuadrant(layer, 32, 32, Color::RED, Color::GREEN,
+                                                         Color::BLUE, Color::WHITE));
+
+    Transaction().setTransform(layer, NATIVE_WINDOW_TRANSFORM_ROT_90).apply();
+
+    screenshot()->expectQuadrant(Rect(0, 0, 32, 32), Color::BLUE, Color::RED, Color::WHITE,
+                                 Color::GREEN, true /* filtered */);
+}
+
+TEST_F(LayerTransactionTest, SetTransformFlipH_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerQuadrant(layer, 32, 32, Color::RED, Color::GREEN,
+                                                         Color::BLUE, Color::WHITE));
+
+    Transaction().setTransform(layer, NATIVE_WINDOW_TRANSFORM_FLIP_H).apply();
+
+    screenshot()->expectQuadrant(Rect(0, 0, 32, 32), Color::GREEN, Color::RED, Color::WHITE,
+                                 Color::BLUE, true /* filtered */);
+}
+
+TEST_F(LayerTransactionTest, SetTransformFlipV_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerQuadrant(layer, 32, 32, Color::RED, Color::GREEN,
+                                                         Color::BLUE, Color::WHITE));
+
+    Transaction().setTransform(layer, NATIVE_WINDOW_TRANSFORM_FLIP_V).apply();
+
+    screenshot()->expectQuadrant(Rect(0, 0, 32, 32), Color::BLUE, Color::WHITE, Color::RED,
+                                 Color::GREEN, true /* filtered */);
+}
+
+TEST_F(LayerTransactionTest, SetTransformToDisplayInverse_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    Transaction().setTransformToDisplayInverse(layer, false).apply();
+
+    ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::GREEN, 32, 32));
+
+    Transaction().setTransformToDisplayInverse(layer, true).apply();
+}
+
+TEST_F(LayerTransactionTest, SetFenceBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<GraphicBuffer> buffer =
+            new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                              BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                      BufferUsage::COMPOSER_OVERLAY,
+                              "test");
+    fillGraphicBufferColor(buffer, Rect(0, 0, 32, 32), Color::RED);
+
+    sp<Fence> fence = new Fence(-1);
+
+    Transaction()
+            .setBuffer(layer, buffer)
+            .setAcquireFence(layer, fence)
+            .setSize(layer, 32, 32)
+            .apply();
+
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetDataspaceBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<GraphicBuffer> buffer =
+            new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                              BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                      BufferUsage::COMPOSER_OVERLAY,
+                              "test");
+    fillGraphicBufferColor(buffer, Rect(0, 0, 32, 32), Color::RED);
+
+    Transaction()
+            .setBuffer(layer, buffer)
+            .setDataspace(layer, ui::Dataspace::UNKNOWN)
+            .setSize(layer, 32, 32)
+            .apply();
+
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetHdrMetadataBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<GraphicBuffer> buffer =
+            new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                              BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                      BufferUsage::COMPOSER_OVERLAY,
+                              "test");
+    fillGraphicBufferColor(buffer, Rect(0, 0, 32, 32), Color::RED);
+
+    HdrMetadata hdrMetadata;
+    hdrMetadata.validTypes = 0;
+    Transaction()
+            .setBuffer(layer, buffer)
+            .setHdrMetadata(layer, hdrMetadata)
+            .setSize(layer, 32, 32)
+            .apply();
+
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetSurfaceDamageRegionBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<GraphicBuffer> buffer =
+            new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                              BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                      BufferUsage::COMPOSER_OVERLAY,
+                              "test");
+    fillGraphicBufferColor(buffer, Rect(0, 0, 32, 32), Color::RED);
+
+    Region region;
+    region.set(32, 32);
+    Transaction()
+            .setBuffer(layer, buffer)
+            .setSurfaceDamageRegion(layer, region)
+            .setSize(layer, 32, 32)
+            .apply();
+
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetApiBasic_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    sp<GraphicBuffer> buffer =
+            new GraphicBuffer(32, 32, PIXEL_FORMAT_RGBA_8888, 1,
+                              BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                      BufferUsage::COMPOSER_OVERLAY,
+                              "test");
+    fillGraphicBufferColor(buffer, Rect(0, 0, 32, 32), Color::RED);
+
+    Transaction()
+            .setBuffer(layer, buffer)
+            .setApi(layer, NATIVE_WINDOW_API_CPU)
+            .setSize(layer, 32, 32)
+            .apply();
+
+    auto shot = screenshot();
+    shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
+    shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
+}
+
+TEST_F(LayerTransactionTest, SetSidebandStreamNull_BufferState) {
+    sp<SurfaceControl> layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
+
+    // verify this doesn't cause a crash
+    Transaction().setSidebandStream(layer, nullptr).apply();
+}
+
+TEST_F(LayerTransactionTest, SetColorTransformBasic) {
+    sp<SurfaceControl> colorLayer;
+    ASSERT_NO_FATAL_FAILURE(
+            colorLayer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceColor));
+
+    Transaction().setLayer(colorLayer, mLayerZBase + 1).apply();
+    {
+        SCOPED_TRACE("default color");
+        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::BLACK);
+    }
+
+    const half3 color(50.0f / 255.0f, 100.0f / 255.0f, 150.0f / 255.0f);
+    const Color expected = {90, 90, 90, 255};
+    // this is handwavy, but the precison loss scaled by 255 (8-bit per
+    // channel) should be less than one
+    const uint8_t tolerance = 1;
+    mat3 matrix;
+    matrix[0][0] = 0.3; matrix[1][0] = 0.59; matrix[2][0] = 0.11;
+    matrix[0][1] = 0.3; matrix[1][1] = 0.59; matrix[2][1] = 0.11;
+    matrix[0][2] = 0.3; matrix[1][2] = 0.59; matrix[2][2] = 0.11;
+    Transaction().setColor(colorLayer, color)
+        .setColorTransform(colorLayer, matrix, vec3()).apply();
+    {
+        SCOPED_TRACE("new color");
+        screenshot()->expectColor(Rect(0, 0, 32, 32), expected, tolerance);
+    }
 }
 
 class LayerUpdateTest : public LayerTransactionTest {
 protected:
     virtual void SetUp() {
-        mComposerClient = new SurfaceComposerClient;
-        ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
+        LayerTransactionTest::SetUp();
+        ASSERT_EQ(NO_ERROR, mClient->initCheck());
 
         sp<IBinder> display(
                 SurfaceComposerClient::getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
@@ -1516,24 +2107,22 @@
         ssize_t displayHeight = info.h;
 
         // Background surface
-        mBGSurfaceControl =
-                mComposerClient->createSurface(String8("BG Test Surface"), displayWidth,
-                                               displayHeight, PIXEL_FORMAT_RGBA_8888, 0);
+        mBGSurfaceControl = createLayer(String8("BG Test Surface"), displayWidth,
+                                               displayHeight, 0);
         ASSERT_TRUE(mBGSurfaceControl != nullptr);
         ASSERT_TRUE(mBGSurfaceControl->isValid());
         fillSurfaceRGBA8(mBGSurfaceControl, 63, 63, 195);
 
         // Foreground surface
-        mFGSurfaceControl = mComposerClient->createSurface(String8("FG Test Surface"), 64, 64,
-                                                           PIXEL_FORMAT_RGBA_8888, 0);
+        mFGSurfaceControl = createLayer(String8("FG Test Surface"), 64, 64, 0);
+
         ASSERT_TRUE(mFGSurfaceControl != nullptr);
         ASSERT_TRUE(mFGSurfaceControl->isValid());
 
         fillSurfaceRGBA8(mFGSurfaceControl, 195, 63, 63);
 
         // Synchronization surface
-        mSyncSurfaceControl = mComposerClient->createSurface(String8("Sync Test Surface"), 1, 1,
-                                                             PIXEL_FORMAT_RGBA_8888, 0);
+        mSyncSurfaceControl = createLayer(String8("Sync Test Surface"), 1, 1, 0);
         ASSERT_TRUE(mSyncSurfaceControl != nullptr);
         ASSERT_TRUE(mSyncSurfaceControl->isValid());
 
@@ -1555,11 +2144,10 @@
     }
 
     virtual void TearDown() {
-        mComposerClient->dispose();
+        LayerTransactionTest::TearDown();
         mBGSurfaceControl = 0;
         mFGSurfaceControl = 0;
         mSyncSurfaceControl = 0;
-        mComposerClient = 0;
     }
 
     void waitForPostedBuffers() {
@@ -1578,7 +2166,6 @@
         t.apply(true);
     }
 
-    sp<SurfaceComposerClient> mComposerClient;
     sp<SurfaceControl> mBGSurfaceControl;
     sp<SurfaceControl> mFGSurfaceControl;
 
@@ -1588,10 +2175,10 @@
 };
 
 TEST_F(LayerUpdateTest, RelativesAreNotDetached) {
-    sp<ScreenCapture> sc;
 
-    sp<SurfaceControl> relative = mComposerClient->createSurface(String8("relativeTestSurface"), 10,
-                                                                 10, PIXEL_FORMAT_RGBA_8888, 0);
+    std::unique_ptr<ScreenCapture> sc;
+
+    sp<SurfaceControl> relative = createLayer(String8("relativeTestSurface"), 10, 10, 0);
     fillSurfaceRGBA8(relative, 10, 10, 10);
     waitForPostedBuffers();
 
@@ -1649,13 +2236,12 @@
         asTransaction([&](Transaction& t) {
             t.setSize(mFGSurfaceControl, 64, 64);
             t.setPosition(mFGSurfaceControl, 64, 64);
-            t.setCrop(mFGSurfaceControl, Rect(0, 0, 64, 64));
-            t.setFinalCrop(mFGSurfaceControl, Rect(0, 0, -1, -1));
+            t.setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 64, 64));
         });
 
         EXPECT_INITIAL_STATE("After restoring initial state");
     }
-    sp<ScreenCapture> sc;
+    std::unique_ptr<ScreenCapture> sc;
 };
 
 class CropLatchingTest : public GeometryLatchingTest {
@@ -1679,45 +2265,8 @@
     }
 };
 
-// In this test we ensure that setGeometryAppliesWithResize actually demands
-// a buffer of the new size, and not just any size.
-TEST_F(CropLatchingTest, FinalCropLatchingBufferOldSize) {
-    EXPECT_INITIAL_STATE("before anything");
-    // Normally the crop applies immediately even while a resize is pending.
-    asTransaction([&](Transaction& t) {
-        t.setSize(mFGSurfaceControl, 128, 128);
-        t.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    });
-
-    EXPECT_CROPPED_STATE("after setting crop (without geometryAppliesWithResize)");
-
-    restoreInitialState();
-
-    // In order to prepare to submit a buffer at the wrong size, we acquire it prior to
-    // initiating the resize.
-    lockAndFillFGBuffer();
-
-    asTransaction([&](Transaction& t) {
-        t.setSize(mFGSurfaceControl, 128, 128);
-        t.setGeometryAppliesWithResize(mFGSurfaceControl);
-        t.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    });
-
-    EXPECT_INITIAL_STATE("after setting crop (with geometryAppliesWithResize)");
-
-    // We now submit our old buffer, at the old size, and ensure it doesn't
-    // trigger geometry latching.
-    unlockFGBuffer();
-
-    EXPECT_INITIAL_STATE("after unlocking FG buffer (with geometryAppliesWithResize)");
-
-    completeFGResize();
-
-    EXPECT_CROPPED_STATE("after the resize finishes");
-}
-
 TEST_F(LayerUpdateTest, DeferredTransactionTest) {
-    sp<ScreenCapture> sc;
+    std::unique_ptr<ScreenCapture> sc;
     {
         SCOPED_TRACE("before anything");
         ScreenCapture::captureScreen(&sc);
@@ -1729,14 +2278,14 @@
     // set up two deferred transactions on different frames
     asTransaction([&](Transaction& t) {
         t.setAlpha(mFGSurfaceControl, 0.75);
-        t.deferTransactionUntil(mFGSurfaceControl, mSyncSurfaceControl->getHandle(),
-                                mSyncSurfaceControl->getSurface()->getNextFrameNumber());
+        t.deferTransactionUntil_legacy(mFGSurfaceControl, mSyncSurfaceControl->getHandle(),
+                                       mSyncSurfaceControl->getSurface()->getNextFrameNumber());
     });
 
     asTransaction([&](Transaction& t) {
         t.setPosition(mFGSurfaceControl, 128, 128);
-        t.deferTransactionUntil(mFGSurfaceControl, mSyncSurfaceControl->getHandle(),
-                                mSyncSurfaceControl->getSurface()->getNextFrameNumber() + 1);
+        t.deferTransactionUntil_legacy(mFGSurfaceControl, mSyncSurfaceControl->getHandle(),
+                                       mSyncSurfaceControl->getSurface()->getNextFrameNumber() + 1);
     });
 
     {
@@ -1772,13 +2321,13 @@
 }
 
 TEST_F(LayerUpdateTest, LayerWithNoBuffersResizesImmediately) {
-    sp<ScreenCapture> sc;
+    std::unique_ptr<ScreenCapture> sc;
 
     sp<SurfaceControl> childNoBuffer =
-            mComposerClient->createSurface(String8("Bufferless child"), 10, 10,
+            mClient->createSurface(String8("Bufferless child"), 10, 10,
                                            PIXEL_FORMAT_RGBA_8888, 0, mFGSurfaceControl.get());
     sp<SurfaceControl> childBuffer =
-            mComposerClient->createSurface(String8("Buffered child"), 20, 20,
+            mClient->createSurface(String8("Buffered child"), 20, 20,
                                            PIXEL_FORMAT_RGBA_8888, 0, childNoBuffer.get());
     fillSurfaceRGBA8(childBuffer, 200, 200, 200);
 
@@ -1800,7 +2349,7 @@
 }
 
 TEST_F(LayerUpdateTest, MergingTransactions) {
-    sp<ScreenCapture> sc;
+    std::unique_ptr<ScreenCapture> sc;
     {
         SCOPED_TRACE("before move");
         ScreenCapture::captureScreen(&sc);
@@ -1827,13 +2376,13 @@
 protected:
     void SetUp() override {
         LayerUpdateTest::SetUp();
-        mChild = mComposerClient->createSurface(String8("Child surface"), 10, 10,
+        mChild = mClient->createSurface(String8("Child surface"), 10, 10,
                                                 PIXEL_FORMAT_RGBA_8888, 0, mFGSurfaceControl.get());
         fillSurfaceRGBA8(mChild, 200, 200, 200);
 
         {
             SCOPED_TRACE("before anything");
-            ScreenCapture::captureScreen(&mCapture);
+            mCapture = screenshot();
             mCapture->expectChildColor(64, 64);
         }
     }
@@ -1843,7 +2392,7 @@
     }
 
     sp<SurfaceControl> mChild;
-    sp<ScreenCapture> mCapture;
+    std::unique_ptr<ScreenCapture> mCapture;
 };
 
 TEST_F(ChildLayerTest, ChildLayerPositioning) {
@@ -1854,7 +2403,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // But 10 pixels in we should see the child surface
@@ -1866,7 +2415,7 @@
     asTransaction([&](Transaction& t) { t.setPosition(mFGSurfaceControl, 0, 0); });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground should now be at 0, 0
         mCapture->expectFGColor(0, 0);
         // But 10 pixels in we should see the child surface
@@ -1881,27 +2430,11 @@
         t.show(mChild);
         t.setPosition(mChild, 0, 0);
         t.setPosition(mFGSurfaceControl, 0, 0);
-        t.setCrop(mFGSurfaceControl, Rect(0, 0, 5, 5));
+        t.setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 5, 5));
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
-        mCapture->expectChildColor(0, 0);
-        mCapture->expectChildColor(4, 4);
-        mCapture->expectBGColor(5, 5);
-    }
-}
-
-TEST_F(ChildLayerTest, ChildLayerFinalCropping) {
-    asTransaction([&](Transaction& t) {
-        t.show(mChild);
-        t.setPosition(mChild, 0, 0);
-        t.setPosition(mFGSurfaceControl, 0, 0);
-        t.setFinalCrop(mFGSurfaceControl, Rect(0, 0, 5, 5));
-    });
-
-    {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectChildColor(0, 0);
         mCapture->expectChildColor(4, 4);
         mCapture->expectBGColor(5, 5);
@@ -1916,7 +2449,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectFGColor(0, 0);
         // Last pixel in foreground should now be the child.
         mCapture->expectChildColor(63, 63);
@@ -1931,7 +2464,7 @@
 
     // Find the boundary between the parent and child
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectChildColor(9, 9);
         mCapture->expectFGColor(10, 10);
     }
@@ -1941,7 +2474,7 @@
     // The boundary should be twice as far from the origin now.
     // The pixels from the last test should all be child now
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectChildColor(9, 9);
         mCapture->expectChildColor(10, 10);
         mCapture->expectChildColor(19, 19);
@@ -1962,7 +2495,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Unblended child color
         mCapture->checkPixel(0, 0, 0, 254, 0);
     }
@@ -1970,7 +2503,7 @@
     asTransaction([&](Transaction& t) { t.setAlpha(mChild, 0.5); });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Child and BG blended.
         mCapture->checkPixel(0, 0, 127, 127, 0);
     }
@@ -1978,7 +2511,7 @@
     asTransaction([&](Transaction& t) { t.setAlpha(mFGSurfaceControl, 0.5); });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Child and BG blended.
         mCapture->checkPixel(0, 0, 95, 64, 95);
     }
@@ -1992,7 +2525,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // But 10 pixels in we should see the child surface
@@ -2006,7 +2539,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectFGColor(64, 64);
         // In reparenting we should have exposed the entire foreground surface.
         mCapture->expectFGColor(74, 74);
@@ -2025,7 +2558,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // But 10 pixels in we should see the child surface
@@ -2034,6 +2567,7 @@
         mCapture->expectFGColor(84, 84);
     }
 
+
     asTransaction([&](Transaction& t) { t.detachChildren(mFGSurfaceControl); });
 
     asTransaction([&](Transaction& t) { t.hide(mChild); });
@@ -2041,13 +2575,44 @@
     // Since the child has the same client as the parent, it will not get
     // detached and will be hidden.
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectFGColor(64, 64);
         mCapture->expectFGColor(74, 74);
         mCapture->expectFGColor(84, 84);
     }
 }
 
+TEST_F(ChildLayerTest, ChildrenSurviveParentDestruction) {
+    sp<SurfaceControl> mGrandChild =
+        mClient->createSurface(String8("Grand Child"), 10, 10,
+                PIXEL_FORMAT_RGBA_8888, 0, mChild.get());
+    fillSurfaceRGBA8(mGrandChild, 111, 111, 111);
+
+    {
+        SCOPED_TRACE("Grandchild visible");
+        ScreenCapture::captureScreen(&mCapture);
+        mCapture->checkPixel(64, 64, 111, 111, 111);
+    }
+
+    mChild->clear();
+
+    {
+        SCOPED_TRACE("After destroying child");
+        ScreenCapture::captureScreen(&mCapture);
+        mCapture->expectFGColor(64, 64);
+    }
+
+    asTransaction([&](Transaction& t) {
+         t.reparent(mGrandChild, mFGSurfaceControl->getHandle());
+    });
+
+    {
+        SCOPED_TRACE("After reparenting grandchild");
+        ScreenCapture::captureScreen(&mCapture);
+        mCapture->checkPixel(64, 64, 111, 111, 111);
+    }
+}
+
 TEST_F(ChildLayerTest, DetachChildrenDifferentClient) {
     sp<SurfaceComposerClient> mNewComposerClient = new SurfaceComposerClient;
     sp<SurfaceControl> mChildNewClient =
@@ -2067,7 +2632,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // But 10 pixels in we should see the child surface
@@ -2082,7 +2647,7 @@
 
     // Nothing should have changed.
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectFGColor(64, 64);
         mCapture->expectChildColor(74, 74);
         mCapture->expectFGColor(84, 84);
@@ -2097,7 +2662,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // We've positioned the child in the top left.
         mCapture->expectChildColor(0, 0);
         // But it's only 10x10.
@@ -2111,7 +2676,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // We've positioned the child in the top left.
         mCapture->expectChildColor(0, 0);
         mCapture->expectChildColor(10, 10);
@@ -2130,7 +2695,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // We've positioned the child in the top left.
         mCapture->expectChildColor(0, 0);
         // But it's only 10x10.
@@ -2149,7 +2714,7 @@
     {
         // The child should still be in the same place and not have any strange scaling as in
         // b/37673612.
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectChildColor(0, 0);
         mCapture->expectFGColor(10, 10);
     }
@@ -2160,14 +2725,14 @@
     mChild.clear();
 
     // Now recreate it as hidden
-    mChild = mComposerClient->createSurface(String8("Child surface"), 10, 10,
+    mChild = mClient->createSurface(String8("Child surface"), 10, 10,
                                             PIXEL_FORMAT_RGBA_8888, ISurfaceComposerClient::eHidden,
                                             mFGSurfaceControl.get());
 
     // Show the child layer in a deferred transaction
     asTransaction([&](Transaction& t) {
-        t.deferTransactionUntil(mChild, mFGSurfaceControl->getHandle(),
-                                mFGSurfaceControl->getSurface()->getNextFrameNumber());
+        t.deferTransactionUntil_legacy(mChild, mFGSurfaceControl->getHandle(),
+                                       mFGSurfaceControl->getSurface()->getNextFrameNumber());
         t.show(mChild);
     });
 
@@ -2194,7 +2759,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // But 10 pixels in we should see the child surface
@@ -2206,7 +2771,7 @@
     asTransaction([&](Transaction& t) { t.reparent(mChild, mBGSurfaceControl->getHandle()); });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectFGColor(64, 64);
         // In reparenting we should have exposed the entire foreground surface.
         mCapture->expectFGColor(74, 74);
@@ -2225,7 +2790,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // But 10 pixels in we should see the child surface
@@ -2235,7 +2800,7 @@
     }
     asTransaction([&](Transaction& t) { t.reparent(mChild, nullptr); });
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Nothing should have changed.
         mCapture->expectFGColor(64, 64);
         mCapture->expectChildColor(74, 74);
@@ -2244,8 +2809,7 @@
 }
 
 TEST_F(ChildLayerTest, ReparentFromNoParent) {
-    sp<SurfaceControl> newSurface = mComposerClient->createSurface(String8("New Surface"), 10, 10,
-                                                                   PIXEL_FORMAT_RGBA_8888, 0);
+    sp<SurfaceControl> newSurface = createLayer(String8("New Surface"), 10, 10, 0);
     ASSERT_TRUE(newSurface != nullptr);
     ASSERT_TRUE(newSurface->isValid());
 
@@ -2259,7 +2823,7 @@
     });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Top left of foreground must now be visible
         mCapture->expectFGColor(64, 64);
         // At 10, 10 we should see the new surface
@@ -2269,7 +2833,7 @@
     asTransaction([&](Transaction& t) { t.reparent(newSurface, mFGSurfaceControl->getHandle()); });
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // newSurface will now be a child of mFGSurface so it will be 10, 10 offset from
         // mFGSurface, putting it at 74, 74.
         mCapture->expectFGColor(64, 64);
@@ -2280,12 +2844,12 @@
 
 TEST_F(ChildLayerTest, NestedChildren) {
     sp<SurfaceControl> grandchild =
-            mComposerClient->createSurface(String8("Grandchild surface"), 10, 10,
+            mClient->createSurface(String8("Grandchild surface"), 10, 10,
                                            PIXEL_FORMAT_RGBA_8888, 0, mChild.get());
     fillSurfaceRGBA8(grandchild, 50, 50, 50);
 
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         // Expect the grandchild to begin at 64, 64 because it's a child of mChild layer
         // which begins at 64, 64
         mCapture->checkPixel(64, 64, 50, 50, 50);
@@ -2293,8 +2857,7 @@
 }
 
 TEST_F(ChildLayerTest, ChildLayerRelativeLayer) {
-    sp<SurfaceControl> relative = mComposerClient->createSurface(String8("Relative surface"), 128,
-                                                                 128, PIXEL_FORMAT_RGBA_8888, 0);
+    sp<SurfaceControl> relative = createLayer(String8("Relative surface"), 128, 128, 0);
     fillSurfaceRGBA8(relative, 255, 255, 255);
 
     Transaction t;
@@ -2306,7 +2869,7 @@
     // We expect that the child should have been elevated above our
     // INT_MAX layer even though it's not a child of it.
     {
-        ScreenCapture::captureScreen(&mCapture);
+        mCapture = screenshot();
         mCapture->expectChildColor(0, 0);
         mCapture->expectChildColor(9, 9);
         mCapture->checkPixel(10, 10, 255, 255, 255);
@@ -2330,7 +2893,7 @@
     auto fgHandle = mFGSurfaceControl->getHandle();
 
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
     fillSurfaceRGBA8(child, 200, 200, 200);
 
@@ -2346,7 +2909,7 @@
     auto fgHandle = mFGSurfaceControl->getHandle();
 
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
     fillSurfaceRGBA8(child, 200, 200, 200);
 
@@ -2360,7 +2923,7 @@
 
 TEST_F(ScreenCaptureTest, CaptureTransparent) {
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
 
     fillSurfaceRGBA8(child, 200, 200, 200);
@@ -2380,10 +2943,9 @@
     auto fgHandle = mFGSurfaceControl->getHandle();
 
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
-    sp<SurfaceControl> relative = mComposerClient->createSurface(String8("Relative surface"), 10,
-                                                                 10, PIXEL_FORMAT_RGBA_8888, 0);
+    sp<SurfaceControl> relative = createLayer(String8("Relative surface"), 10, 10, 0);
     fillSurfaceRGBA8(child, 200, 200, 200);
     fillSurfaceRGBA8(relative, 100, 100, 100);
 
@@ -2404,10 +2966,10 @@
     auto fgHandle = mFGSurfaceControl->getHandle();
 
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
     sp<SurfaceControl> relative =
-            mComposerClient->createSurface(String8("Relative surface"), 10, 10,
+            mClient->createSurface(String8("Relative surface"), 10, 10,
                                            PIXEL_FORMAT_RGBA_8888, 0, mFGSurfaceControl.get());
     fillSurfaceRGBA8(child, 200, 200, 200);
     fillSurfaceRGBA8(relative, 100, 100, 100);
@@ -2438,7 +3000,7 @@
         LayerUpdateTest::SetUp();
 
         mChild =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                     0, mFGSurfaceControl.get());
         fillSurfaceRGBA8(mChild, 200, 200, 200);
 
@@ -2465,8 +3027,9 @@
 }
 
 TEST_F(ScreenCaptureChildOnlyTest, CaptureLayerIgnoresParentCrop) {
-
-    SurfaceComposerClient::Transaction().setCrop(mFGSurfaceControl, Rect(0, 0, 1, 1)).apply(true);
+    SurfaceComposerClient::Transaction()
+            .setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 1, 1))
+            .apply(true);
 
     // Even though the parent is cropped out we should still capture the child.
     verify();
@@ -2495,12 +3058,12 @@
     auto fgHandle = mFGSurfaceControl->getHandle();
 
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
     fillSurfaceRGBA8(child, 200, 200, 200);
 
     sp<SurfaceControl> grandchild =
-            mComposerClient->createSurface(String8("Grandchild surface"), 5, 5,
+            mClient->createSurface(String8("Grandchild surface"), 5, 5,
                                            PIXEL_FORMAT_RGBA_8888, 0, child.get());
 
     fillSurfaceRGBA8(grandchild, 50, 50, 50);
@@ -2519,7 +3082,7 @@
 
 TEST_F(ScreenCaptureTest, CaptureChildOnly) {
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
     fillSurfaceRGBA8(child, 200, 200, 200);
     auto childHandle = child->getHandle();
@@ -2534,13 +3097,13 @@
 
 TEST_F(ScreenCaptureTest, CaptureGrandchildOnly) {
     sp<SurfaceControl> child =
-            mComposerClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Child surface"), 10, 10, PIXEL_FORMAT_RGBA_8888,
                                            0, mFGSurfaceControl.get());
     fillSurfaceRGBA8(child, 200, 200, 200);
     auto childHandle = child->getHandle();
 
     sp<SurfaceControl> grandchild =
-            mComposerClient->createSurface(String8("Grandchild surface"), 5, 5,
+            mClient->createSurface(String8("Grandchild surface"), 5, 5,
                                            PIXEL_FORMAT_RGBA_8888, 0, child.get());
     fillSurfaceRGBA8(grandchild, 50, 50, 50);
 
@@ -2559,14 +3122,13 @@
 }
 
 TEST_F(ScreenCaptureTest, CaptureCrop) {
-    sp<SurfaceControl> redLayer = mComposerClient->createSurface(String8("Red surface"), 60, 60,
-                                                                 PIXEL_FORMAT_RGBA_8888, 0);
+    sp<SurfaceControl> redLayer = createLayer(String8("Red surface"), 60, 60, 0);
     sp<SurfaceControl> blueLayer =
-            mComposerClient->createSurface(String8("Blue surface"), 30, 30, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Blue surface"), 30, 30, PIXEL_FORMAT_RGBA_8888,
                                            0, redLayer.get());
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(redLayer, Color::RED));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(blueLayer, Color::BLUE));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(redLayer, Color::RED, 60, 60));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(blueLayer, Color::BLUE, 30, 30));
 
     SurfaceComposerClient::Transaction()
             .setLayer(redLayer, INT32_MAX - 1)
@@ -2593,14 +3155,13 @@
 }
 
 TEST_F(ScreenCaptureTest, CaptureSize) {
-    sp<SurfaceControl> redLayer = mComposerClient->createSurface(String8("Red surface"), 60, 60,
-                                                                 PIXEL_FORMAT_RGBA_8888, 0);
+    sp<SurfaceControl> redLayer = createLayer(String8("Red surface"), 60, 60, 0);
     sp<SurfaceControl> blueLayer =
-            mComposerClient->createSurface(String8("Blue surface"), 30, 30, PIXEL_FORMAT_RGBA_8888,
+            mClient->createSurface(String8("Blue surface"), 30, 30, PIXEL_FORMAT_RGBA_8888,
                                            0, redLayer.get());
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(redLayer, Color::RED));
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(blueLayer, Color::BLUE));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(redLayer, Color::RED, 60, 60));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(blueLayer, Color::BLUE, 30, 30));
 
     SurfaceComposerClient::Transaction()
             .setLayer(redLayer, INT32_MAX - 1)
@@ -2629,13 +3190,12 @@
 }
 
 TEST_F(ScreenCaptureTest, CaptureInvalidLayer) {
-    sp<SurfaceControl> redLayer = mComposerClient->createSurface(String8("Red surface"), 60, 60,
-                                                                 PIXEL_FORMAT_RGBA_8888, 0);
+    sp<SurfaceControl> redLayer = createLayer(String8("Red surface"), 60, 60, 0);
 
-    ASSERT_NO_FATAL_FAILURE(fillLayerColor(redLayer, Color::RED));
+    ASSERT_NO_FATAL_FAILURE(fillBufferQueueLayerColor(redLayer, Color::RED, 60, 60));
 
     auto redLayerHandle = redLayer->getHandle();
-    mComposerClient->destroySurface(redLayerHandle);
+    mClient->destroySurface(redLayerHandle);
     SurfaceComposerClient::Transaction().apply(true);
 
     sp<GraphicBuffer> outBuffer;
@@ -2651,9 +3211,9 @@
     void SetUp() override {
         LayerTransactionTest::SetUp();
         bgLayer = createLayer("BG layer", 20, 20);
-        fillLayerColor(bgLayer, Color::RED);
+        fillBufferQueueLayerColor(bgLayer, Color::RED, 20, 20);
         fgLayer = createLayer("FG layer", 20, 20);
-        fillLayerColor(fgLayer, Color::BLUE);
+        fillBufferQueueLayerColor(fgLayer, Color::BLUE, 20, 20);
         Transaction().setLayer(fgLayer, mLayerZBase + 1).apply();
         {
             SCOPED_TRACE("before anything");
diff --git a/services/surfaceflinger/tests/fakehwc/Android.bp b/services/surfaceflinger/tests/fakehwc/Android.bp
index 6ad1b87..a5b522e 100644
--- a/services/surfaceflinger/tests/fakehwc/Android.bp
+++ b/services/surfaceflinger/tests/fakehwc/Android.bp
@@ -30,8 +30,9 @@
         "libutils",
     ],
     static_libs: [
+        "libgmock",
+        "librenderengine",
         "libtrace_proto",
-        "libgmock"
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
diff --git a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
index 9b31985..356a880 100644
--- a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
+++ b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
@@ -624,7 +624,7 @@
     {
         TransactionScope ts(*sFakeComposer);
         Rect cropRect(16, 16, 32, 32);
-        ts.setCrop(mFGSurfaceControl, cropRect);
+        ts.setCrop_legacy(mFGSurfaceControl, cropRect);
     }
     ASSERT_EQ(2, sFakeComposer->getFrameCount());
 
@@ -634,40 +634,6 @@
     EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
 }
 
-TEST_F(TransactionTest, LayerFinalCrop) {
-    // TODO: Add scaling to confirm that crop happens in display space?
-    {
-        TransactionScope ts(*sFakeComposer);
-        Rect cropRect(32, 32, 32 + 64, 32 + 64);
-        ts.setFinalCrop(mFGSurfaceControl, cropRect);
-    }
-    ASSERT_EQ(2, sFakeComposer->getFrameCount());
-
-    // In display space we are cropping with [32, 32, 96, 96] against display rect
-    // [64, 64, 128, 128]. Should yield display rect [64, 64, 96, 96]
-    auto referenceFrame = mBaseFrame;
-    referenceFrame[FG_LAYER].mSourceCrop = hwc_frect_t{0.f, 0.f, 32.f, 32.f};
-    referenceFrame[FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 64 + 32, 64 + 32};
-
-    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
-}
-
-TEST_F(TransactionTest, LayerFinalCropEmpty) {
-    // TODO: Add scaling to confirm that crop happens in display space?
-    {
-        TransactionScope ts(*sFakeComposer);
-        Rect cropRect(16, 16, 32, 32);
-        ts.setFinalCrop(mFGSurfaceControl, cropRect);
-    }
-    ASSERT_EQ(2, sFakeComposer->getFrameCount());
-
-    // In display space we are cropping with [16, 16, 32, 32] against display rect
-    // [64, 64, 128, 128]. The intersection is empty and only the background layer is composited.
-    std::vector<RenderState> referenceFrame(1);
-    referenceFrame[BG_LAYER] = mBaseFrame[BG_LAYER];
-    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
-}
-
 TEST_F(TransactionTest, LayerSetLayer) {
     {
         TransactionScope ts(*sFakeComposer);
@@ -847,18 +813,16 @@
     {
         TransactionScope ts(*sFakeComposer);
         ts.setAlpha(mFGSurfaceControl, 0.75);
-        ts.deferTransactionUntil(mFGSurfaceControl, 
-                syncSurfaceControl->getHandle(),
-                syncSurfaceControl->getSurface()->getNextFrameNumber());
+        ts.deferTransactionUntil_legacy(mFGSurfaceControl, syncSurfaceControl->getHandle(),
+                                        syncSurfaceControl->getSurface()->getNextFrameNumber());
     }
     EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
 
     {
         TransactionScope ts(*sFakeComposer);
         ts.setPosition(mFGSurfaceControl, 128, 128);
-        ts.deferTransactionUntil(mFGSurfaceControl,
-                syncSurfaceControl->getHandle(),
-                syncSurfaceControl->getSurface()->getNextFrameNumber() + 1);
+        ts.deferTransactionUntil_legacy(mFGSurfaceControl, syncSurfaceControl->getHandle(),
+                                        syncSurfaceControl->getSurface()->getNextFrameNumber() + 1);
     }
     EXPECT_EQ(4, sFakeComposer->getFrameCount());
     EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
@@ -981,7 +945,7 @@
         ts.show(mChild);
         ts.setPosition(mChild, 0, 0);
         ts.setPosition(mFGSurfaceControl, 0, 0);
-        ts.setCrop(mFGSurfaceControl, Rect(0, 0, 5, 5));
+        ts.setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 5, 5));
     }
     // NOTE: The foreground surface would be occluded by the child
     // now, but is included in the stack because the child is
@@ -994,22 +958,6 @@
     EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
 }
 
-TEST_F(ChildLayerTest, FinalCropping) {
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.show(mChild);
-        ts.setPosition(mChild, 0, 0);
-        ts.setPosition(mFGSurfaceControl, 0, 0);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(0, 0, 5, 5));
-    }
-    auto referenceFrame = mBaseFrame;
-    referenceFrame[FG_LAYER].mDisplayFrame = hwc_rect_t{0, 0, 0 + 5, 0 + 5};
-    referenceFrame[FG_LAYER].mSourceCrop = hwc_frect_t{0.f, 0.f, 5.f, 5.f};
-    referenceFrame[CHILD_LAYER].mDisplayFrame = hwc_rect_t{0, 0, 0 + 5, 0 + 5};
-    referenceFrame[CHILD_LAYER].mSourceCrop = hwc_frect_t{0.f, 0.f, 5.f, 5.f};
-    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
-}
-
 TEST_F(ChildLayerTest, Constraints) {
     {
         TransactionScope ts(*sFakeComposer);
@@ -1095,7 +1043,7 @@
     EXPECT_TRUE(framesAreSame(referenceFrame2, sFakeComposer->getLatestFrame()));
 }
 
-TEST_F(ChildLayerTest, DetachChildren) {
+TEST_F(ChildLayerTest, DetachChildrenSameClient) {
     {
         TransactionScope ts(*sFakeComposer);
         ts.show(mChild);
@@ -1111,14 +1059,59 @@
 
     {
         TransactionScope ts(*sFakeComposer);
+        ts.setPosition(mFGSurfaceControl, 0, 0);
         ts.detachChildren(mFGSurfaceControl);
     }
 
     {
         TransactionScope ts(*sFakeComposer);
+        ts.setPosition(mFGSurfaceControl, 64, 64);
         ts.hide(mChild);
     }
 
+    std::vector<RenderState> refFrame(2);
+    refFrame[BG_LAYER] = mBaseFrame[BG_LAYER];
+    refFrame[FG_LAYER] = mBaseFrame[FG_LAYER];
+
+    EXPECT_TRUE(framesAreSame(refFrame, sFakeComposer->getLatestFrame()));
+}
+
+TEST_F(ChildLayerTest, DetachChildrenDifferentClient) {
+    sp<SurfaceComposerClient> newComposerClient = new SurfaceComposerClient;
+    sp<SurfaceControl> childNewClient =
+            newComposerClient->createSurface(String8("New Child Test Surface"), 10, 10,
+                                             PIXEL_FORMAT_RGBA_8888, 0, mFGSurfaceControl.get());
+    ASSERT_TRUE(childNewClient != nullptr);
+    ASSERT_TRUE(childNewClient->isValid());
+    fillSurfaceRGBA8(childNewClient, LIGHT_GRAY);
+
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.hide(mChild);
+        ts.show(childNewClient);
+        ts.setPosition(childNewClient, 10, 10);
+        ts.setPosition(mFGSurfaceControl, 64, 64);
+    }
+
+    auto referenceFrame = mBaseFrame;
+    referenceFrame[FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 64 + 64, 64 + 64};
+    referenceFrame[CHILD_LAYER].mDisplayFrame =
+            hwc_rect_t{64 + 10, 64 + 10, 64 + 10 + 10, 64 + 10 + 10};
+    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
+
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.detachChildren(mFGSurfaceControl);
+        ts.setPosition(mFGSurfaceControl, 0, 0);
+    }
+
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.setPosition(mFGSurfaceControl, 64, 64);
+        ts.setPosition(childNewClient, 0, 0);
+        ts.hide(childNewClient);
+    }
+
     // Nothing should have changed. The child control becomes a no-op
     // zombie on detach. See comments for detachChildren in the
     // SurfaceControl.h file.
@@ -1193,8 +1186,8 @@
     // Show the child layer in a deferred transaction
     {
         TransactionScope ts(*sFakeComposer);
-        ts.deferTransactionUntil(mChild, mFGSurfaceControl->getHandle(), 
-                                      mFGSurfaceControl->getSurface()->getNextFrameNumber());
+        ts.deferTransactionUntil_legacy(mChild, mFGSurfaceControl->getHandle(),
+                                        mFGSurfaceControl->getSurface()->getNextFrameNumber());
         ts.show(mChild);
     }
 
@@ -1217,6 +1210,81 @@
     sFakeComposer->runVSyncAndWait();
 }
 
+class ChildColorLayerTest : public ChildLayerTest {
+protected:
+    void SetUp() override {
+        TransactionTest::SetUp();
+        mChild = mComposerClient->createSurface(String8("Child surface"), 10, 10,
+                                                PIXEL_FORMAT_RGBA_8888,
+                                                ISurfaceComposerClient::eFXSurfaceColor,
+                                                mFGSurfaceControl.get());
+        {
+            TransactionScope ts(*sFakeComposer);
+            ts.setColor(mChild,
+                        {LIGHT_GRAY.r / 255.0f, LIGHT_GRAY.g / 255.0f, LIGHT_GRAY.b / 255.0f});
+        }
+
+        sFakeComposer->runVSyncAndWait();
+        mBaseFrame.push_back(makeSimpleRect(64, 64, 64 + 10, 64 + 10));
+        mBaseFrame[CHILD_LAYER].mSourceCrop = hwc_frect_t{0.0f, 0.0f, 0.0f, 0.0f};
+        mBaseFrame[CHILD_LAYER].mSwapCount = 0;
+        ASSERT_EQ(2, sFakeComposer->getFrameCount());
+        ASSERT_TRUE(framesAreSame(mBaseFrame, sFakeComposer->getLatestFrame()));
+    }
+};
+
+TEST_F(ChildColorLayerTest, LayerAlpha) {
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.show(mChild);
+        ts.setPosition(mChild, 0, 0);
+        ts.setPosition(mFGSurfaceControl, 0, 0);
+        ts.setAlpha(mChild, 0.5);
+    }
+
+    auto referenceFrame = mBaseFrame;
+    referenceFrame[FG_LAYER].mDisplayFrame = hwc_rect_t{0, 0, 64, 64};
+    referenceFrame[CHILD_LAYER].mDisplayFrame = hwc_rect_t{0, 0, 10, 10};
+    referenceFrame[CHILD_LAYER].mPlaneAlpha = 0.5f;
+    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
+
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.setAlpha(mFGSurfaceControl, 0.5);
+    }
+
+    auto referenceFrame2 = referenceFrame;
+    referenceFrame2[FG_LAYER].mPlaneAlpha = 0.5f;
+    referenceFrame2[CHILD_LAYER].mPlaneAlpha = 0.25f;
+    EXPECT_TRUE(framesAreSame(referenceFrame2, sFakeComposer->getLatestFrame()));
+}
+
+TEST_F(ChildColorLayerTest, LayerZeroAlpha) {
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.show(mChild);
+        ts.setPosition(mChild, 0, 0);
+        ts.setPosition(mFGSurfaceControl, 0, 0);
+        ts.setAlpha(mChild, 0.5);
+    }
+
+    auto referenceFrame = mBaseFrame;
+    referenceFrame[FG_LAYER].mDisplayFrame = hwc_rect_t{0, 0, 64, 64};
+    referenceFrame[CHILD_LAYER].mDisplayFrame = hwc_rect_t{0, 0, 10, 10};
+    referenceFrame[CHILD_LAYER].mPlaneAlpha = 0.5f;
+    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
+
+    {
+        TransactionScope ts(*sFakeComposer);
+        ts.setAlpha(mFGSurfaceControl, 0.0f);
+    }
+
+    std::vector<RenderState> refFrame(1);
+    refFrame[BG_LAYER] = mBaseFrame[BG_LAYER];
+
+    EXPECT_TRUE(framesAreSame(refFrame, sFakeComposer->getLatestFrame()));
+}
+
 class LatchingTest : public TransactionTest {
 protected:
     void lockAndFillFGBuffer() { fillSurfaceRGBA8(mFGSurfaceControl, RED, false); }
@@ -1235,8 +1303,7 @@
         TransactionScope ts(*sFakeComposer);
         ts.setSize(mFGSurfaceControl, 64, 64);
         ts.setPosition(mFGSurfaceControl, 64, 64);
-        ts.setCrop(mFGSurfaceControl, Rect(0, 0, 64, 64));
-        ts.setFinalCrop(mFGSurfaceControl, Rect(0, 0, -1, -1));
+        ts.setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 64, 64));
     }
 };
 
@@ -1280,7 +1347,7 @@
     {
         TransactionScope ts(*sFakeComposer);
         ts.setSize(mFGSurfaceControl, 128, 128);
-        ts.setCrop(mFGSurfaceControl, Rect(0, 0, 63, 63));
+        ts.setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 63, 63));
     }
 
     auto referenceFrame1 = mBaseFrame;
@@ -1294,7 +1361,7 @@
         TransactionScope ts(*sFakeComposer);
         ts.setSize(mFGSurfaceControl, 128, 128);
         ts.setGeometryAppliesWithResize(mFGSurfaceControl);
-        ts.setCrop(mFGSurfaceControl, Rect(0, 0, 63, 63));
+        ts.setCrop_legacy(mFGSurfaceControl, Rect(0, 0, 63, 63));
     }
     EXPECT_TRUE(framesAreSame(mBaseFrame, sFakeComposer->getLatestFrame()));
 
@@ -1307,111 +1374,6 @@
     EXPECT_TRUE(framesAreSame(referenceFrame2, sFakeComposer->getLatestFrame()));
 }
 
-TEST_F(LatchingTest, FinalCropLatching) {
-    // Normally the crop applies immediately even while a resize is pending.
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.setSize(mFGSurfaceControl, 128, 128);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    }
-
-    auto referenceFrame1 = mBaseFrame;
-    referenceFrame1[FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 127, 127};
-    referenceFrame1[FG_LAYER].mSourceCrop =
-            hwc_frect_t{0.f, 0.f, static_cast<float>(127 - 64), static_cast<float>(127 - 64)};
-    EXPECT_TRUE(framesAreSame(referenceFrame1, sFakeComposer->getLatestFrame()));
-
-    restoreInitialState();
-
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.setSize(mFGSurfaceControl, 128, 128);
-        ts.setGeometryAppliesWithResize(mFGSurfaceControl);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    }
-    EXPECT_TRUE(framesAreSame(mBaseFrame, sFakeComposer->getLatestFrame()));
-
-    completeFGResize();
-
-    auto referenceFrame2 = mBaseFrame;
-    referenceFrame2[FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 127, 127};
-    referenceFrame2[FG_LAYER].mSourceCrop =
-            hwc_frect_t{0.f, 0.f, static_cast<float>(127 - 64), static_cast<float>(127 - 64)};
-    referenceFrame2[FG_LAYER].mSwapCount++;
-    EXPECT_TRUE(framesAreSame(referenceFrame2, sFakeComposer->getLatestFrame()));
-}
-
-// In this test we ensure that setGeometryAppliesWithResize actually demands
-// a buffer of the new size, and not just any size.
-TEST_F(LatchingTest, FinalCropLatchingBufferOldSize) {
-    // Normally the crop applies immediately even while a resize is pending.
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.setSize(mFGSurfaceControl, 128, 128);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    }
-
-    auto referenceFrame1 = mBaseFrame;
-    referenceFrame1[FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 127, 127};
-    referenceFrame1[FG_LAYER].mSourceCrop =
-            hwc_frect_t{0.f, 0.f, static_cast<float>(127 - 64), static_cast<float>(127 - 64)};
-    EXPECT_TRUE(framesAreSame(referenceFrame1, sFakeComposer->getLatestFrame()));
-
-    restoreInitialState();
-
-    // In order to prepare to submit a buffer at the wrong size, we acquire it prior to
-    // initiating the resize.
-    lockAndFillFGBuffer();
-
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.setSize(mFGSurfaceControl, 128, 128);
-        ts.setGeometryAppliesWithResize(mFGSurfaceControl);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    }
-    EXPECT_TRUE(framesAreSame(mBaseFrame, sFakeComposer->getLatestFrame()));
-
-    // We now submit our old buffer, at the old size, and ensure it doesn't
-    // trigger geometry latching.
-    unlockFGBuffer();
-
-    auto referenceFrame2 = mBaseFrame;
-    referenceFrame2[FG_LAYER].mSwapCount++;
-    EXPECT_TRUE(framesAreSame(referenceFrame2, sFakeComposer->getLatestFrame()));
-
-    completeFGResize();
-    auto referenceFrame3 = referenceFrame2;
-    referenceFrame3[FG_LAYER].mDisplayFrame = hwc_rect_t{64, 64, 127, 127};
-    referenceFrame3[FG_LAYER].mSourceCrop =
-            hwc_frect_t{0.f, 0.f, static_cast<float>(127 - 64), static_cast<float>(127 - 64)};
-    referenceFrame3[FG_LAYER].mSwapCount++;
-    EXPECT_TRUE(framesAreSame(referenceFrame3, sFakeComposer->getLatestFrame()));
-}
-
-TEST_F(LatchingTest, FinalCropLatchingRegressionForb37531386) {
-    // In this scenario, we attempt to set the final crop a second time while the resize
-    // is still pending, and ensure we are successful. Success meaning the second crop
-    // is the one which eventually latches and not the first.
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.setSize(mFGSurfaceControl, 128, 128);
-        ts.setGeometryAppliesWithResize(mFGSurfaceControl);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(64, 64, 127, 127));
-    }
-
-    {
-        TransactionScope ts(*sFakeComposer);
-        ts.setFinalCrop(mFGSurfaceControl, Rect(0, 0, -1, -1));
-    }
-    EXPECT_TRUE(framesAreSame(mBaseFrame, sFakeComposer->getLatestFrame()));
-
-    completeFGResize();
-
-    auto referenceFrame = mBaseFrame;
-    referenceFrame[FG_LAYER].mSwapCount++;
-    EXPECT_TRUE(framesAreSame(referenceFrame, sFakeComposer->getLatestFrame()));
-}
-
 } // namespace
 
 int main(int argc, char** argv) {
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 9949bfa..6fe52d3 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -1,4 +1,4 @@
-// Copyright (C) 2018 The Android Open Source Project
+// Copyright 2018 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,16 +16,26 @@
     name: "libsurfaceflinger_unittest",
     defaults: ["libsurfaceflinger_defaults"],
     test_suites: ["device-tests"],
+    sanitize: {
+        // Using the address sanitizer not only helps uncover issues in the code
+        // covered by the tests, but also covers some of the tricky injection of
+        // fakes the unit tests currently do.
+        address: true,
+    },
     srcs: [
         ":libsurfaceflinger_sources",
+        "CompositionTest.cpp",
+        "DisplayIdentificationTest.cpp",
         "DisplayTransactionTest.cpp",
         "EventControlThreadTest.cpp",
         "EventThreadTest.cpp",
+        "SchedulerTest.cpp",
         "mock/DisplayHardware/MockComposer.cpp",
         "mock/DisplayHardware/MockDisplaySurface.cpp",
         "mock/DisplayHardware/MockPowerAdvisor.cpp",
         "mock/gui/MockGraphicBufferConsumer.cpp",
         "mock/gui/MockGraphicBufferProducer.cpp",
+        "mock/MockDispSync.cpp",
         "mock/MockEventControlThread.cpp",
         "mock/MockEventThread.cpp",
         "mock/MockMessageQueue.cpp",
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
new file mode 100644
index 0000000..7b79fbd
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -0,0 +1,1272 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "CompositionTest"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <gui/IProducerListener.h>
+#include <log/log.h>
+#include <system/window.h>
+#include <utils/String8.h>
+
+#include "BufferQueueLayer.h"
+#include "ColorLayer.h"
+#include "Layer.h"
+
+#include "TestableSurfaceFlinger.h"
+#include "mock/DisplayHardware/MockComposer.h"
+#include "mock/DisplayHardware/MockDisplaySurface.h"
+#include "mock/MockDispSync.h"
+#include "mock/MockEventControlThread.h"
+#include "mock/MockEventThread.h"
+#include "mock/MockMessageQueue.h"
+#include "mock/RenderEngine/MockRenderEngine.h"
+
+namespace android {
+namespace {
+
+using testing::_;
+using testing::ByMove;
+using testing::DoAll;
+using testing::IsNull;
+using testing::Mock;
+using testing::NotNull;
+using testing::Ref;
+using testing::Return;
+using testing::ReturnRef;
+using testing::SetArgPointee;
+
+using android::Hwc2::Error;
+using android::Hwc2::IComposer;
+using android::Hwc2::IComposerClient;
+using android::Hwc2::Transform;
+
+using FakeHwcDisplayInjector = TestableSurfaceFlinger::FakeHwcDisplayInjector;
+using FakeDisplayDeviceInjector = TestableSurfaceFlinger::FakeDisplayDeviceInjector;
+
+constexpr hwc2_display_t HWC_DISPLAY = FakeHwcDisplayInjector::DEFAULT_HWC_DISPLAY_ID;
+constexpr hwc2_layer_t HWC_LAYER = 5000;
+constexpr Transform DEFAULT_TRANSFORM = static_cast<Transform>(0);
+
+constexpr int DEFAULT_DISPLAY_WIDTH = 1920;
+constexpr int DEFAULT_DISPLAY_HEIGHT = 1024;
+
+constexpr int DEFAULT_CONFIG_ID = 0;
+constexpr int DEFAULT_TEXTURE_ID = 6000;
+constexpr int DEFAULT_LAYER_STACK = 7000;
+
+constexpr int DEFAULT_DISPLAY_MAX_LUMINANCE = 500;
+
+constexpr int DEFAULT_SIDEBAND_STREAM = 51;
+
+class CompositionTest : public testing::Test {
+public:
+    CompositionTest() {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
+
+        mFlinger.mutableEventControlThread().reset(mEventControlThread);
+        mFlinger.mutableEventThread().reset(mEventThread);
+        mFlinger.mutableEventQueue().reset(mMessageQueue);
+
+        mFlinger.mutablePrimaryDispSync().reset(mPrimaryDispSync);
+        EXPECT_CALL(*mPrimaryDispSync, computeNextRefresh(0)).WillRepeatedly(Return(0));
+        EXPECT_CALL(*mPrimaryDispSync, getPeriod())
+                .WillRepeatedly(Return(FakeHwcDisplayInjector::DEFAULT_REFRESH_RATE));
+
+        mFlinger.setupRenderEngine(std::unique_ptr<renderengine::RenderEngine>(mRenderEngine));
+        setupComposer(0);
+    }
+
+    ~CompositionTest() {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
+    }
+
+    void setupComposer(int virtualDisplayCount) {
+        mComposer = new Hwc2::mock::Composer();
+        EXPECT_CALL(*mComposer, getCapabilities())
+                .WillOnce(Return(std::vector<IComposer::Capability>()));
+        EXPECT_CALL(*mComposer, getMaxVirtualDisplayCount()).WillOnce(Return(virtualDisplayCount));
+        mFlinger.setupComposer(std::unique_ptr<Hwc2::Composer>(mComposer));
+
+        Mock::VerifyAndClear(mComposer);
+    }
+
+    void setupForceGeometryDirty() {
+        // TODO: This requires the visible region and other related
+        // state to be set, and is problematic for BufferLayers since they are
+        // not visible without a buffer (and setting up a buffer looks like a
+        // pain)
+        // mFlinger.mutableVisibleRegionsDirty() = true;
+
+        mFlinger.mutableGeometryInvalid() = true;
+    }
+
+    template <typename Case>
+    void displayRefreshCompositionDirtyGeometry();
+
+    template <typename Case>
+    void displayRefreshCompositionDirtyFrame();
+
+    template <typename Case>
+    void captureScreenComposition();
+
+    std::unordered_set<HWC2::Capability> mDefaultCapabilities = {HWC2::Capability::SidebandStream};
+
+    TestableSurfaceFlinger mFlinger;
+    sp<DisplayDevice> mDisplay;
+    sp<DisplayDevice> mExternalDisplay;
+    sp<mock::DisplaySurface> mDisplaySurface = new mock::DisplaySurface();
+    renderengine::mock::Surface* mRenderSurface = new renderengine::mock::Surface();
+
+    mock::EventThread* mEventThread = new mock::EventThread();
+    mock::EventControlThread* mEventControlThread = new mock::EventControlThread();
+
+    Hwc2::mock::Composer* mComposer = nullptr;
+    renderengine::mock::RenderEngine* mRenderEngine = new renderengine::mock::RenderEngine();
+    mock::MessageQueue* mMessageQueue = new mock::MessageQueue();
+    mock::DispSync* mPrimaryDispSync = new mock::DispSync();
+    renderengine::mock::Image* mReImage = new renderengine::mock::Image();
+    renderengine::mock::Framebuffer* mReFrameBuffer = new renderengine::mock::Framebuffer();
+
+    sp<Fence> mClientTargetAcquireFence = Fence::NO_FENCE;
+
+    sp<GraphicBuffer> mCaptureScreenBuffer;
+};
+
+template <typename LayerCase>
+void CompositionTest::displayRefreshCompositionDirtyGeometry() {
+    setupForceGeometryDirty();
+    LayerCase::setupForDirtyGeometry(this);
+
+    // --------------------------------------------------------------------
+    // Invocation
+
+    mFlinger.onMessageReceived(MessageQueue::INVALIDATE);
+    mFlinger.onMessageReceived(MessageQueue::REFRESH);
+
+    LayerCase::cleanup(this);
+}
+
+template <typename LayerCase>
+void CompositionTest::displayRefreshCompositionDirtyFrame() {
+    LayerCase::setupForDirtyFrame(this);
+
+    // --------------------------------------------------------------------
+    // Invocation
+
+    mFlinger.onMessageReceived(MessageQueue::INVALIDATE);
+    mFlinger.onMessageReceived(MessageQueue::REFRESH);
+
+    LayerCase::cleanup(this);
+}
+
+template <typename LayerCase>
+void CompositionTest::captureScreenComposition() {
+    LayerCase::setupForScreenCapture(this);
+
+    const Rect sourceCrop(0, 0, DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT);
+    constexpr bool useIdentityTransform = true;
+    constexpr bool forSystem = true;
+
+    DisplayRenderArea renderArea(mDisplay, sourceCrop, DEFAULT_DISPLAY_WIDTH,
+                                 DEFAULT_DISPLAY_HEIGHT, ui::Transform::ROT_0);
+
+    auto traverseLayers = [this](const LayerVector::Visitor& visitor) {
+        return mFlinger.traverseLayersInDisplay(mDisplay, visitor);
+    };
+
+    // TODO: Eliminate expensive/real allocation if possible.
+    const uint32_t usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN |
+            GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE;
+    mCaptureScreenBuffer = new GraphicBuffer(renderArea.getReqWidth(), renderArea.getReqHeight(),
+                                             HAL_PIXEL_FORMAT_RGBA_8888, 1, usage, "screenshot");
+
+    int fd = -1;
+    status_t result =
+            mFlinger.captureScreenImplLocked(renderArea, traverseLayers, mCaptureScreenBuffer.get(),
+                                             useIdentityTransform, forSystem, &fd);
+    if (fd >= 0) {
+        close(fd);
+    }
+
+    EXPECT_EQ(NO_ERROR, result);
+
+    LayerCase::cleanup(this);
+}
+
+/* ------------------------------------------------------------------------
+ * Variants for each display configuration which can be tested
+ */
+
+template <typename Derived>
+struct BaseDisplayVariant {
+    static constexpr bool IS_SECURE = true;
+    static constexpr int INIT_POWER_MODE = HWC_POWER_MODE_NORMAL;
+
+    static void setupPreconditions(CompositionTest* test) {
+        FakeHwcDisplayInjector(DisplayDevice::DISPLAY_PRIMARY, HWC2::DisplayType::Physical)
+                .setCapabilities(&test->mDefaultCapabilities)
+                .inject(&test->mFlinger, test->mComposer);
+
+        test->mDisplay = FakeDisplayDeviceInjector(test->mFlinger, DisplayDevice::DISPLAY_PRIMARY,
+                                                   DisplayDevice::DISPLAY_PRIMARY)
+                                 .setDisplaySize(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT)
+                                 .setDisplaySurface(test->mDisplaySurface)
+                                 .setRenderSurface(std::unique_ptr<renderengine::Surface>(
+                                         test->mRenderSurface))
+                                 .setSecure(Derived::IS_SECURE)
+                                 .setPowerMode(Derived::INIT_POWER_MODE)
+                                 .inject();
+        test->mDisplay->setLayerStack(DEFAULT_LAYER_STACK);
+    }
+
+    template <typename Case>
+    static void setupCommonCompositionCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setColorTransform(HWC_DISPLAY, _, Hwc2::ColorTransform::IDENTITY))
+                .Times(1);
+        EXPECT_CALL(*test->mComposer, presentOrValidateDisplay(HWC_DISPLAY, _, _, _, _)).Times(1);
+        EXPECT_CALL(*test->mComposer, getDisplayRequests(HWC_DISPLAY, _, _, _)).Times(1);
+        EXPECT_CALL(*test->mComposer, acceptDisplayChanges(HWC_DISPLAY)).Times(1);
+        EXPECT_CALL(*test->mComposer, presentDisplay(HWC_DISPLAY, _)).Times(1);
+        EXPECT_CALL(*test->mComposer, getReleaseFences(HWC_DISPLAY, _, _)).Times(1);
+
+        EXPECT_CALL(*test->mRenderEngine, useNativeFenceSync()).WillRepeatedly(Return(true));
+        EXPECT_CALL(*test->mRenderEngine, checkErrors()).WillRepeatedly(Return());
+        EXPECT_CALL(*test->mRenderEngine, isCurrent()).WillRepeatedly(Return(true));
+
+        EXPECT_CALL(*test->mRenderEngine, setCurrentSurface(Ref(*test->mRenderSurface)))
+                .WillOnce(Return(true));
+        EXPECT_CALL(*test->mRenderEngine,
+                    setViewportAndProjection(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT,
+                                             Rect(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT),
+                                             ui::Transform::ROT_0))
+                .Times(1);
+
+        EXPECT_CALL(*test->mDisplaySurface, onFrameCommitted()).Times(1);
+        EXPECT_CALL(*test->mDisplaySurface, advanceFrame()).Times(1);
+
+        Case::CompositionType::setupHwcSetCallExpectations(test);
+        Case::CompositionType::setupHwcGetCallExpectations(test);
+    }
+
+    template <typename Case>
+    static void setupCommonScreensCaptureCallExpectations(CompositionTest* test) {
+        // Called once with a non-null value to set a framebuffer, and then
+        // again with nullptr to clear it.
+        EXPECT_CALL(*test->mReFrameBuffer, setNativeWindowBuffer(NotNull())).WillOnce(Return(true));
+        EXPECT_CALL(*test->mReFrameBuffer, setNativeWindowBuffer(IsNull())).WillOnce(Return(true));
+
+        EXPECT_CALL(*test->mRenderEngine, checkErrors()).WillRepeatedly(Return());
+        EXPECT_CALL(*test->mRenderEngine, createFramebuffer())
+                .WillOnce(Return(
+                        ByMove(std::unique_ptr<renderengine::Framebuffer>(test->mReFrameBuffer))));
+        EXPECT_CALL(*test->mRenderEngine, bindFrameBuffer(test->mReFrameBuffer)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, unbindFrameBuffer(test->mReFrameBuffer)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, clearWithColor(0, 0, 0, 1)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, flush()).WillOnce(Return(ByMove(base::unique_fd())));
+        EXPECT_CALL(*test->mRenderEngine, finish()).WillOnce(Return(true));
+
+        EXPECT_CALL(*test->mRenderEngine, setOutputDataSpace(ui::Dataspace::SRGB)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setDisplayMaxLuminance(DEFAULT_DISPLAY_MAX_LUMINANCE))
+                .Times(1);
+        // This expectation retires on saturation as setViewportAndProjection is
+        // called an extra time for the code path this setup is for.
+        // TODO: Investigate this extra call
+        EXPECT_CALL(*test->mRenderEngine,
+                    setViewportAndProjection(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT,
+                                             Rect(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT),
+                                             ui::Transform::ROT_0))
+                .Times(1)
+                .RetiresOnSaturation();
+        EXPECT_CALL(*test->mRenderEngine, disableTexturing()).Times(1);
+    }
+
+    static void setupNonEmptyFrameCompositionCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mDisplaySurface, beginFrame(true)).Times(1);
+    }
+
+    static void setupEmptyFrameCompositionCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mDisplaySurface, beginFrame(false)).Times(1);
+    }
+
+    static void setupHwcCompositionCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mDisplaySurface, prepareFrame(DisplaySurface::COMPOSITION_HWC)).Times(1);
+
+        EXPECT_CALL(*test->mRenderEngine, disableScissor()).Times(1);
+    }
+
+    static void setupRECompositionCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mDisplaySurface, prepareFrame(DisplaySurface::COMPOSITION_GLES))
+                .Times(1);
+        EXPECT_CALL(*test->mDisplaySurface, getClientTargetAcquireFence())
+                .WillRepeatedly(ReturnRef(test->mClientTargetAcquireFence));
+
+        EXPECT_CALL(*test->mRenderEngine, setOutputDataSpace(ui::Dataspace::UNKNOWN)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setDisplayMaxLuminance(DEFAULT_DISPLAY_MAX_LUMINANCE))
+                .Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setColorTransform(_)).Times(2);
+        // These expectations retire on saturation as the code path these
+        // expectations are for appears to make an extra call to them.
+        // TODO: Investigate this extra call
+        EXPECT_CALL(*test->mRenderEngine,
+                    setViewportAndProjection(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT,
+                                             Rect(DEFAULT_DISPLAY_WIDTH, DEFAULT_DISPLAY_HEIGHT),
+                                             ui::Transform::ROT_0))
+                .Times(1)
+                .RetiresOnSaturation();
+        EXPECT_CALL(*test->mRenderEngine, setCurrentSurface(Ref(*test->mRenderSurface)))
+                .WillOnce(Return(true))
+                .RetiresOnSaturation();
+        EXPECT_CALL(*test->mRenderSurface, swapBuffers()).Times(1);
+    }
+
+    template <typename Case>
+    static void setupRELayerCompositionCallExpectations(CompositionTest* test) {
+        Case::Layer::setupRECompositionCallExpectations(test);
+    }
+
+    template <typename Case>
+    static void setupRELayerScreenshotCompositionCallExpectations(CompositionTest* test) {
+        Case::Layer::setupREScreenshotCompositionCallExpectations(test);
+
+        EXPECT_CALL(*test->mRenderEngine, isCurrent()).WillRepeatedly(Return(true));
+    }
+};
+
+struct DefaultDisplaySetupVariant : public BaseDisplayVariant<DefaultDisplaySetupVariant> {};
+
+struct InsecureDisplaySetupVariant : public BaseDisplayVariant<InsecureDisplaySetupVariant> {
+    static constexpr bool IS_SECURE = false;
+
+    template <typename Case>
+    static void setupRELayerCompositionCallExpectations(CompositionTest* test) {
+        Case::Layer::setupInsecureRECompositionCallExpectations(test);
+
+        // TODO: Investigate this extra call
+        EXPECT_CALL(*test->mRenderEngine, disableScissor()).Times(1);
+    }
+
+    template <typename Case>
+    static void setupRELayerScreenshotCompositionCallExpectations(CompositionTest* test) {
+        Case::Layer::setupInsecureREScreenshotCompositionCallExpectations(test);
+
+        EXPECT_CALL(*test->mRenderEngine, isCurrent()).WillRepeatedly(Return(true));
+    }
+};
+
+struct PoweredOffDisplaySetupVariant : public BaseDisplayVariant<PoweredOffDisplaySetupVariant> {
+    static constexpr int INIT_POWER_MODE = HWC_POWER_MODE_OFF;
+
+    template <typename Case>
+    static void setupCommonCompositionCallExpectations(CompositionTest* test) {
+        // TODO: This seems like an unnecessary call if display is powered off.
+        EXPECT_CALL(*test->mComposer,
+                    setColorTransform(HWC_DISPLAY, _, Hwc2::ColorTransform::IDENTITY))
+                .Times(1);
+
+        // TODO: This seems like an unnecessary call if display is powered off.
+        Case::CompositionType::setupHwcSetCallExpectations(test);
+    }
+
+    static void setupHwcCompositionCallExpectations(CompositionTest*) {}
+
+    static void setupRECompositionCallExpectations(CompositionTest* test) {
+        // TODO: This seems like an unnecessary call if display is powered off.
+        EXPECT_CALL(*test->mDisplaySurface, getClientTargetAcquireFence())
+                .WillRepeatedly(ReturnRef(test->mClientTargetAcquireFence));
+    }
+
+    template <typename Case>
+    static void setupRELayerCompositionCallExpectations(CompositionTest*) {}
+};
+
+/* ------------------------------------------------------------------------
+ * Variants for each layer configuration which can be tested
+ */
+
+template <typename LayerProperties>
+struct BaseLayerProperties {
+    static constexpr uint32_t WIDTH = 100;
+    static constexpr uint32_t HEIGHT = 100;
+    static constexpr PixelFormat FORMAT = PIXEL_FORMAT_RGBA_8888;
+    static constexpr uint64_t USAGE =
+            GraphicBuffer::USAGE_SW_READ_NEVER | GraphicBuffer::USAGE_SW_WRITE_NEVER;
+    static constexpr android_dataspace DATASPACE = HAL_DATASPACE_UNKNOWN;
+    static constexpr uint32_t SCALING_MODE = 0;
+    static constexpr uint32_t TRANSFORM = 0;
+    static constexpr uint32_t LAYER_FLAGS = 0;
+    static constexpr float COLOR[] = {1.f, 1.f, 1.f, 1.f};
+    static constexpr IComposerClient::BlendMode BLENDMODE =
+            IComposerClient::BlendMode::PREMULTIPLIED;
+
+    static void enqueueBuffer(CompositionTest*, sp<BufferQueueLayer> layer) {
+        auto producer = layer->getProducer();
+
+        IGraphicBufferProducer::QueueBufferOutput qbo;
+        status_t result = producer->connect(nullptr, NATIVE_WINDOW_API_EGL, false, &qbo);
+        if (result != NO_ERROR) {
+            ALOGE("Failed to connect() (%d)", result);
+            return;
+        }
+
+        int slot;
+        sp<Fence> fence;
+        result = producer->dequeueBuffer(&slot, &fence, LayerProperties::WIDTH,
+                                         LayerProperties::HEIGHT, LayerProperties::FORMAT,
+                                         LayerProperties::USAGE, nullptr, nullptr);
+        if (result != IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) {
+            ALOGE("Failed to dequeueBuffer() (%d)", result);
+            return;
+        }
+
+        sp<GraphicBuffer> buffer;
+        result = producer->requestBuffer(slot, &buffer);
+        if (result != NO_ERROR) {
+            ALOGE("Failed to requestBuffer() (%d)", result);
+            return;
+        }
+
+        IGraphicBufferProducer::QueueBufferInput qbi(systemTime(), false /* isAutoTimestamp */,
+                                                     LayerProperties::DATASPACE,
+                                                     Rect(LayerProperties::WIDTH,
+                                                          LayerProperties::HEIGHT),
+                                                     LayerProperties::SCALING_MODE,
+                                                     LayerProperties::TRANSFORM, Fence::NO_FENCE);
+        result = producer->queueBuffer(slot, qbi, &qbo);
+        if (result != NO_ERROR) {
+            ALOGE("Failed to queueBuffer (%d)", result);
+            return;
+        }
+    }
+
+    static void setupLatchedBuffer(CompositionTest* test, sp<BufferQueueLayer> layer) {
+        // TODO: Eliminate the complexity of actually creating a buffer
+        EXPECT_CALL(*test->mRenderEngine, getMaxTextureSize()).WillOnce(Return(16384));
+        EXPECT_CALL(*test->mRenderEngine, getMaxViewportDims()).WillOnce(Return(16384));
+        status_t err =
+                layer->setDefaultBufferProperties(LayerProperties::WIDTH, LayerProperties::HEIGHT,
+                                                  LayerProperties::FORMAT);
+        ASSERT_EQ(NO_ERROR, err);
+        Mock::VerifyAndClear(test->mRenderEngine);
+
+        EXPECT_CALL(*test->mMessageQueue, invalidate()).Times(1);
+        enqueueBuffer(test, layer);
+        Mock::VerifyAndClear(test->mMessageQueue);
+
+        EXPECT_CALL(*test->mRenderEngine, isCurrent()).WillRepeatedly(Return(true));
+        EXPECT_CALL(*test->mRenderEngine, useNativeFenceSync()).WillRepeatedly(Return(true));
+        EXPECT_CALL(*test->mRenderEngine, createImage())
+                .WillOnce(Return(ByMove(std::unique_ptr<renderengine::Image>(test->mReImage))));
+        bool ignoredRecomputeVisibleRegions;
+        layer->latchBuffer(ignoredRecomputeVisibleRegions, 0, Fence::NO_FENCE);
+        Mock::VerifyAndClear(test->mRenderEngine);
+        Mock::VerifyAndClear(test->mReImage);
+    }
+
+    static void setupLayerState(CompositionTest* test, sp<BufferQueueLayer> layer) {
+        setupLatchedBuffer(test, layer);
+    }
+
+    static void setupBufferLayerPostFrameCallExpectations(CompositionTest* test) {
+        // BufferLayer::onPostComposition(), when there is no present fence
+        EXPECT_CALL(*test->mComposer, getActiveConfig(HWC_DISPLAY, _))
+                .WillOnce(DoAll(SetArgPointee<1>(DEFAULT_CONFIG_ID), Return(Error::NONE)));
+    }
+
+    static void setupHwcSetGeometryCallExpectations(CompositionTest* test) {
+        // TODO: Coverage of other values
+        EXPECT_CALL(*test->mComposer,
+                    setLayerBlendMode(HWC_DISPLAY, HWC_LAYER, LayerProperties::BLENDMODE))
+                .Times(1);
+        // TODO: Coverage of other values for origin
+        EXPECT_CALL(*test->mComposer,
+                    setLayerDisplayFrame(HWC_DISPLAY, HWC_LAYER,
+                                         IComposerClient::Rect({0, 0, LayerProperties::WIDTH,
+                                                                LayerProperties::HEIGHT})))
+                .Times(1);
+        EXPECT_CALL(*test->mComposer,
+                    setLayerPlaneAlpha(HWC_DISPLAY, HWC_LAYER, LayerProperties::COLOR[3]))
+                .Times(1);
+        // TODO: Coverage of other values
+        EXPECT_CALL(*test->mComposer, setLayerZOrder(HWC_DISPLAY, HWC_LAYER, 0u)).Times(1);
+        // TODO: Coverage of other values
+        EXPECT_CALL(*test->mComposer, setLayerInfo(HWC_DISPLAY, HWC_LAYER, 0u, 0u)).Times(1);
+
+        // These expectations retire on saturation as the code path these
+        // expectations are for appears to make an extra call to them.
+        // TODO: Investigate this extra call
+        EXPECT_CALL(*test->mComposer, setLayerTransform(HWC_DISPLAY, HWC_LAYER, DEFAULT_TRANSFORM))
+                .Times(1)
+                .RetiresOnSaturation();
+    }
+
+    static void setupHwcSetSourceCropBufferCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
+                                       IComposerClient::FRect({0.f, 0.f, LayerProperties::WIDTH,
+                                                               LayerProperties::HEIGHT})))
+                .Times(1);
+    }
+
+    static void setupHwcSetSourceCropColorCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
+                                       IComposerClient::FRect({0.f, 0.f, 0.f, 0.f})))
+                .Times(1);
+    }
+
+    static void setupHwcSetPerFrameCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerVisibleRegion(HWC_DISPLAY, HWC_LAYER,
+                                          std::vector<IComposerClient::Rect>({IComposerClient::Rect(
+                                                  {0, 0, LayerProperties::WIDTH,
+                                                   LayerProperties::HEIGHT})})))
+                .Times(1);
+    }
+
+    static void setupHwcSetPerFrameColorCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _)).Times(1);
+
+        // TODO: use COLOR
+        EXPECT_CALL(*test->mComposer,
+                    setLayerColor(HWC_DISPLAY, HWC_LAYER,
+                                  IComposerClient::Color({0xff, 0xff, 0xff, 0xff})))
+                .Times(1);
+
+        // TODO: ColorLayer::onPreComposition() always returns true, triggering an
+        // extra layer update in SurfaceFlinger::preComposition(). This seems
+        // wrong on the surface.
+        EXPECT_CALL(*test->mMessageQueue, invalidate()).Times(1);
+    }
+
+    static void setupHwcSetPerFrameBufferCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _)).Times(1);
+        EXPECT_CALL(*test->mComposer, setLayerBuffer(HWC_DISPLAY, HWC_LAYER, _, _, _)).Times(1);
+
+        setupBufferLayerPostFrameCallExpectations(test);
+    }
+
+    static void setupREBufferCompositionCommonCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mRenderEngine,
+                    setupLayerBlending(true, false, false,
+                                       half4(LayerProperties::COLOR[0], LayerProperties::COLOR[1],
+                                             LayerProperties::COLOR[2], LayerProperties::COLOR[3])))
+                .Times(1);
+
+        EXPECT_CALL(*test->mRenderEngine, bindExternalTextureImage(DEFAULT_TEXTURE_ID, _)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setupLayerTexturing(_)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setSourceDataSpace(ui::Dataspace::UNKNOWN)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, drawMesh(_)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, disableBlending()).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setSourceY410BT2020(false)).Times(1);
+        // This call retires on saturation as the code that renders a texture disables the state,
+        // along with a top-level disable to ensure it is disabled for non-buffer layers.
+        EXPECT_CALL(*test->mRenderEngine, disableTexturing()).Times(1).RetiresOnSaturation();
+    }
+
+    static void setupREBufferCompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREBufferCompositionCommonCallExpectations(test);
+
+        // TODO - Investigate and eliminate these differences between display
+        // composition and screenshot composition.
+        EXPECT_CALL(*test->mRenderEngine, disableScissor()).Times(1);
+    }
+
+    static void setupInsecureREBufferCompositionCallExpectations(CompositionTest* test) {
+        setupREBufferCompositionCallExpectations(test);
+    }
+
+    static void setupREBufferScreenshotCompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREBufferCompositionCommonCallExpectations(test);
+    }
+
+    static void setupInsecureREBufferScreenshotCompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREBufferCompositionCommonCallExpectations(test);
+    }
+
+    static void setupREColorCompositionCommonCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mRenderEngine, disableScissor()).Times(1);
+    }
+
+    static void setupREColorCompositionCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mRenderEngine, setSourceDataSpace(ui::Dataspace::UNKNOWN)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine,
+                    setupLayerBlending(true, false, true,
+                                       half4(LayerProperties::COLOR[0], LayerProperties::COLOR[1],
+                                             LayerProperties::COLOR[2], LayerProperties::COLOR[3])))
+                .Times(1);
+        EXPECT_CALL(*test->mRenderEngine, drawMesh(_)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, disableBlending()).Times(1);
+    }
+
+    static void setupREColorScreenshotCompositionCallExpectations(CompositionTest* test) {
+        setupREColorCompositionCallExpectations(test);
+    }
+};
+
+struct DefaultLayerProperties : public BaseLayerProperties<DefaultLayerProperties> {};
+
+struct ColorLayerProperties : public BaseLayerProperties<ColorLayerProperties> {};
+
+struct SidebandLayerProperties : public BaseLayerProperties<SidebandLayerProperties> {
+    using Base = BaseLayerProperties<SidebandLayerProperties>;
+    static constexpr IComposerClient::BlendMode BLENDMODE = IComposerClient::BlendMode::NONE;
+
+    static void setupLayerState(CompositionTest* test, sp<BufferQueueLayer> layer) {
+        sp<NativeHandle> stream =
+                NativeHandle::create(reinterpret_cast<native_handle_t*>(DEFAULT_SIDEBAND_STREAM),
+                                     false);
+        test->mFlinger.setLayerSidebandStream(layer, stream);
+    }
+
+    static void setupHwcSetSourceCropBufferCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
+                                       IComposerClient::FRect({0.f, 0.f, -1.f, -1.f})))
+                .Times(1);
+    }
+
+    static void setupHwcSetPerFrameBufferCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerSidebandStream(HWC_DISPLAY, HWC_LAYER,
+                                           reinterpret_cast<native_handle_t*>(
+                                                   DEFAULT_SIDEBAND_STREAM)))
+                .WillOnce(Return(Error::NONE));
+
+        EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _)).Times(1);
+    }
+
+    static void setupREBufferCompositionCommonCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mRenderEngine, setupFillWithColor(0, 0, 0, 1)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, drawMesh(_)).Times(1);
+    }
+};
+
+struct SecureLayerProperties : public BaseLayerProperties<SecureLayerProperties> {
+    using Base = BaseLayerProperties<SecureLayerProperties>;
+
+    static constexpr uint32_t LAYER_FLAGS = ISurfaceComposerClient::eSecure;
+
+    static void setupInsecureREBufferCompositionCommonCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mRenderEngine, bindExternalTextureImage(DEFAULT_TEXTURE_ID, _)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setupLayerBlackedOut()).Times(1);
+
+        EXPECT_CALL(*test->mRenderEngine,
+                    setupLayerBlending(true, false, false,
+                                       half4(Base::COLOR[0], Base::COLOR[1], Base::COLOR[2],
+                                             Base::COLOR[3])))
+                .Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setSourceDataSpace(ui::Dataspace::UNKNOWN)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, drawMesh(_)).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, disableBlending()).Times(1);
+        EXPECT_CALL(*test->mRenderEngine, setSourceY410BT2020(false)).Times(1);
+        // This call retires on saturation as the code that renders a texture disables the state,
+        // along with a top-level disable to ensure it is disabled for non-buffer layers.
+        EXPECT_CALL(*test->mRenderEngine, disableTexturing()).Times(1).RetiresOnSaturation();
+    }
+
+    static void setupInsecureREBufferCompositionCallExpectations(CompositionTest* test) {
+        setupInsecureREBufferCompositionCommonCallExpectations(test);
+        Base::setupBufferLayerPostFrameCallExpectations(test);
+    }
+
+    static void setupInsecureREBufferScreenshotCompositionCallExpectations(CompositionTest* test) {
+        setupInsecureREBufferCompositionCommonCallExpectations(test);
+    }
+};
+
+struct CursorLayerProperties : public BaseLayerProperties<CursorLayerProperties> {
+    using Base = BaseLayerProperties<CursorLayerProperties>;
+
+    static void setupLayerState(CompositionTest* test, sp<BufferQueueLayer> layer) {
+        Base::setupLayerState(test, layer);
+        test->mFlinger.setLayerPotentialCursor(layer, true);
+    }
+};
+
+struct NoLayerVariant {
+    using FlingerLayerType = sp<BufferQueueLayer>;
+
+    static FlingerLayerType createLayer(CompositionTest*) { return FlingerLayerType(); }
+    static void injectLayer(CompositionTest*, FlingerLayerType) {}
+    static void cleanupInjectedLayers(CompositionTest*) {}
+
+    static void setupCallExpectationsForDirtyGeometry(CompositionTest*) {}
+    static void setupCallExpectationsForDirtyFrame(CompositionTest*) {}
+};
+
+template <typename LayerProperties>
+struct BaseLayerVariant {
+    template <typename L, typename F>
+    static sp<L> createLayerWithFactory(CompositionTest* test, F factory) {
+        EXPECT_CALL(*test->mMessageQueue, postMessage(_, 0)).Times(0);
+
+        sp<L> layer = factory();
+
+        Mock::VerifyAndClear(test->mComposer);
+        Mock::VerifyAndClear(test->mRenderEngine);
+        Mock::VerifyAndClear(test->mMessageQueue);
+
+        auto& layerDrawingState = test->mFlinger.mutableLayerDrawingState(layer);
+        layerDrawingState.layerStack = DEFAULT_LAYER_STACK;
+        layerDrawingState.active.w = 100;
+        layerDrawingState.active.h = 100;
+        layerDrawingState.color = half4(LayerProperties::COLOR[0], LayerProperties::COLOR[1],
+                                        LayerProperties::COLOR[2], LayerProperties::COLOR[3]);
+
+        layer->setVisibleRegion(Region(Rect(0, 0, 100, 100)));
+
+        return layer;
+    }
+
+    static void injectLayer(CompositionTest* test, sp<Layer> layer) {
+        EXPECT_CALL(*test->mComposer, createLayer(HWC_DISPLAY, _))
+                .WillOnce(DoAll(SetArgPointee<1>(HWC_LAYER), Return(Error::NONE)));
+
+        layer->createHwcLayer(test->mFlinger.mFlinger->getBE().mHwc.get(), test->mDisplay->getId());
+
+        Mock::VerifyAndClear(test->mComposer);
+
+        Vector<sp<Layer>> layers;
+        layers.add(layer);
+        test->mDisplay->setVisibleLayersSortedByZ(layers);
+        test->mFlinger.mutableDrawingState().layersSortedByZ.add(layer);
+    }
+
+    static void cleanupInjectedLayers(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer, destroyLayer(HWC_DISPLAY, HWC_LAYER))
+                .WillOnce(Return(Error::NONE));
+        for (auto layer : test->mFlinger.mutableDrawingState().layersSortedByZ) {
+            layer->destroyHwcLayer(test->mDisplay->getId());
+        }
+        test->mFlinger.mutableDrawingState().layersSortedByZ.clear();
+    }
+};
+
+template <typename LayerProperties>
+struct ColorLayerVariant : public BaseLayerVariant<LayerProperties> {
+    using Base = BaseLayerVariant<LayerProperties>;
+    using FlingerLayerType = sp<ColorLayer>;
+
+    static FlingerLayerType createLayer(CompositionTest* test) {
+        FlingerLayerType layer = Base::template createLayerWithFactory<ColorLayer>(test, [test]() {
+            return new ColorLayer(LayerCreationArgs(test->mFlinger.mFlinger.get(), sp<Client>(),
+                                                    String8("test-layer"), LayerProperties::WIDTH,
+                                                    LayerProperties::HEIGHT,
+                                                    LayerProperties::LAYER_FLAGS));
+        });
+        return layer;
+    }
+
+    static void setupRECompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREColorCompositionCommonCallExpectations(test);
+        LayerProperties::setupREColorCompositionCallExpectations(test);
+    }
+
+    static void setupREScreenshotCompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREColorScreenshotCompositionCallExpectations(test);
+    }
+
+    static void setupCallExpectationsForDirtyGeometry(CompositionTest* test) {
+        LayerProperties::setupHwcSetGeometryCallExpectations(test);
+        LayerProperties::setupHwcSetSourceCropColorCallExpectations(test);
+    }
+
+    static void setupCallExpectationsForDirtyFrame(CompositionTest* test) {
+        LayerProperties::setupHwcSetPerFrameCallExpectations(test);
+        LayerProperties::setupHwcSetPerFrameColorCallExpectations(test);
+    }
+};
+
+template <typename LayerProperties>
+struct BufferLayerVariant : public BaseLayerVariant<LayerProperties> {
+    using Base = BaseLayerVariant<LayerProperties>;
+    using FlingerLayerType = sp<BufferQueueLayer>;
+
+    static FlingerLayerType createLayer(CompositionTest* test) {
+        test->mFlinger.mutableTexturePool().push_back(DEFAULT_TEXTURE_ID);
+
+        FlingerLayerType layer =
+                Base::template createLayerWithFactory<BufferQueueLayer>(test, [test]() {
+                    return new BufferQueueLayer(
+                            LayerCreationArgs(test->mFlinger.mFlinger.get(), sp<Client>(),
+                                              String8("test-layer"), LayerProperties::WIDTH,
+                                              LayerProperties::HEIGHT,
+                                              LayerProperties::LAYER_FLAGS));
+                });
+
+        LayerProperties::setupLayerState(test, layer);
+
+        return layer;
+    }
+
+    static void cleanupInjectedLayers(CompositionTest* test) {
+        EXPECT_CALL(*test->mMessageQueue, postMessage(_, 0)).Times(2);
+        Base::cleanupInjectedLayers(test);
+    }
+
+    static void setupCallExpectationsForDirtyGeometry(CompositionTest* test) {
+        LayerProperties::setupHwcSetGeometryCallExpectations(test);
+        LayerProperties::setupHwcSetSourceCropBufferCallExpectations(test);
+    }
+
+    static void setupCallExpectationsForDirtyFrame(CompositionTest* test) {
+        LayerProperties::setupHwcSetPerFrameCallExpectations(test);
+        LayerProperties::setupHwcSetPerFrameBufferCallExpectations(test);
+    }
+
+    static void setupRECompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREBufferCompositionCallExpectations(test);
+    }
+
+    static void setupInsecureRECompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupInsecureREBufferCompositionCallExpectations(test);
+    }
+
+    static void setupREScreenshotCompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupREBufferScreenshotCompositionCallExpectations(test);
+    }
+
+    static void setupInsecureREScreenshotCompositionCallExpectations(CompositionTest* test) {
+        LayerProperties::setupInsecureREBufferScreenshotCompositionCallExpectations(test);
+    }
+};
+
+/* ------------------------------------------------------------------------
+ * Variants to control how the composition type is changed
+ */
+
+struct NoCompositionTypeVariant {
+    static void setupHwcSetCallExpectations(CompositionTest*) {}
+
+    static void setupHwcGetCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer, getChangedCompositionTypes(HWC_DISPLAY, _, _)).Times(1);
+    }
+};
+
+template <IComposerClient::Composition CompositionType>
+struct KeepCompositionTypeVariant {
+    static constexpr HWC2::Composition TYPE = static_cast<HWC2::Composition>(CompositionType);
+
+    static void setupHwcSetCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerCompositionType(HWC_DISPLAY, HWC_LAYER, CompositionType))
+                .Times(1);
+    }
+
+    static void setupHwcGetCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer, getChangedCompositionTypes(HWC_DISPLAY, _, _)).Times(1);
+    }
+};
+
+template <IComposerClient::Composition InitialCompositionType,
+          IComposerClient::Composition FinalCompositionType>
+struct ChangeCompositionTypeVariant {
+    static constexpr HWC2::Composition TYPE = static_cast<HWC2::Composition>(FinalCompositionType);
+
+    static void setupHwcSetCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer,
+                    setLayerCompositionType(HWC_DISPLAY, HWC_LAYER, InitialCompositionType))
+                .Times(1);
+    }
+
+    static void setupHwcGetCallExpectations(CompositionTest* test) {
+        EXPECT_CALL(*test->mComposer, getChangedCompositionTypes(HWC_DISPLAY, _, _))
+                .WillOnce(DoAll(SetArgPointee<1>(std::vector<Hwc2::Layer>{
+                                        static_cast<Hwc2::Layer>(HWC_LAYER)}),
+                                SetArgPointee<2>(std::vector<IComposerClient::Composition>{
+                                        FinalCompositionType}),
+                                Return(Error::NONE)));
+    }
+};
+
+/* ------------------------------------------------------------------------
+ * Variants to select how the composition is expected to be handled
+ */
+
+struct CompositionResultBaseVariant {
+    static void setupLayerState(CompositionTest*, sp<Layer>) {}
+
+    template <typename Case>
+    static void setupCallExpectationsForDirtyGeometry(CompositionTest* test) {
+        Case::Layer::setupCallExpectationsForDirtyGeometry(test);
+    }
+
+    template <typename Case>
+    static void setupCallExpectationsForDirtyFrame(CompositionTest* test) {
+        Case::Layer::setupCallExpectationsForDirtyFrame(test);
+    }
+};
+
+struct NoCompositionResultVariant : public CompositionResultBaseVariant {
+    template <typename Case>
+    static void setupCallExpectations(CompositionTest* test) {
+        Case::Display::setupEmptyFrameCompositionCallExpectations(test);
+        Case::Display::setupHwcCompositionCallExpectations(test);
+    }
+};
+
+struct HwcCompositionResultVariant : public CompositionResultBaseVariant {
+    template <typename Case>
+    static void setupCallExpectations(CompositionTest* test) {
+        Case::Display::setupNonEmptyFrameCompositionCallExpectations(test);
+        Case::Display::setupHwcCompositionCallExpectations(test);
+    }
+};
+
+struct RECompositionResultVariant : public CompositionResultBaseVariant {
+    template <typename Case>
+    static void setupCallExpectations(CompositionTest* test) {
+        Case::Display::setupNonEmptyFrameCompositionCallExpectations(test);
+        Case::Display::setupRECompositionCallExpectations(test);
+        Case::Display::template setupRELayerCompositionCallExpectations<Case>(test);
+    }
+};
+
+struct ForcedClientCompositionResultVariant : public RECompositionResultVariant {
+    static void setupLayerState(CompositionTest*, sp<Layer> layer) {
+        layer->forceClientComposition(DisplayDevice::DISPLAY_PRIMARY);
+    }
+
+    template <typename Case>
+    static void setupCallExpectationsForDirtyGeometry(CompositionTest*) {}
+
+    template <typename Case>
+    static void setupCallExpectationsForDirtyFrame(CompositionTest*) {}
+};
+
+struct EmptyScreenshotResultVariant {
+    static void setupLayerState(CompositionTest*, sp<Layer>) {}
+
+    template <typename Case>
+    static void setupCallExpectations(CompositionTest*) {}
+};
+
+struct REScreenshotResultVariant : public EmptyScreenshotResultVariant {
+    using Base = EmptyScreenshotResultVariant;
+
+    template <typename Case>
+    static void setupCallExpectations(CompositionTest* test) {
+        Base::template setupCallExpectations<Case>(test);
+        Case::Display::template setupRELayerScreenshotCompositionCallExpectations<Case>(test);
+    }
+};
+
+/* ------------------------------------------------------------------------
+ * Composition test case, containing all the variants being tested
+ */
+
+template <typename DisplayCase, typename LayerCase, typename CompositionTypeCase,
+          typename CompositionResultCase>
+struct CompositionCase {
+    using ThisCase =
+            CompositionCase<DisplayCase, LayerCase, CompositionTypeCase, CompositionResultCase>;
+    using Display = DisplayCase;
+    using Layer = LayerCase;
+    using CompositionType = CompositionTypeCase;
+    using CompositionResult = CompositionResultCase;
+
+    static void setupCommon(CompositionTest* test) {
+        Display::setupPreconditions(test);
+
+        auto layer = Layer::createLayer(test);
+        Layer::injectLayer(test, layer);
+        CompositionResult::setupLayerState(test, layer);
+    }
+
+    static void setupForDirtyGeometry(CompositionTest* test) {
+        setupCommon(test);
+
+        Display::template setupCommonCompositionCallExpectations<ThisCase>(test);
+        CompositionResult::template setupCallExpectationsForDirtyGeometry<ThisCase>(test);
+        CompositionResult::template setupCallExpectationsForDirtyFrame<ThisCase>(test);
+        CompositionResult::template setupCallExpectations<ThisCase>(test);
+    }
+
+    static void setupForDirtyFrame(CompositionTest* test) {
+        setupCommon(test);
+
+        Display::template setupCommonCompositionCallExpectations<ThisCase>(test);
+        CompositionResult::template setupCallExpectationsForDirtyFrame<ThisCase>(test);
+        CompositionResult::template setupCallExpectations<ThisCase>(test);
+    }
+
+    static void setupForScreenCapture(CompositionTest* test) {
+        setupCommon(test);
+
+        Display::template setupCommonScreensCaptureCallExpectations<ThisCase>(test);
+        CompositionResult::template setupCallExpectations<ThisCase>(test);
+    }
+
+    static void cleanup(CompositionTest* test) {
+        Layer::cleanupInjectedLayers(test);
+
+        for (auto& hwcDisplay : test->mFlinger.mFakeHwcDisplays) {
+            hwcDisplay->mutableLayers().clear();
+        }
+
+        test->mDisplay->setVisibleLayersSortedByZ(Vector<sp<android::Layer>>());
+    }
+};
+
+/* ------------------------------------------------------------------------
+ * Composition cases to test
+ */
+
+TEST_F(CompositionTest, noLayersDoesMinimalWorkWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, NoLayerVariant, NoCompositionTypeVariant,
+                            NoCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, noLayersDoesMinimalWorkWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, NoLayerVariant, NoCompositionTypeVariant,
+                            NoCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, noLayersDoesMinimalWorkToCaptureScreen) {
+    captureScreenComposition<
+            CompositionCase<DefaultDisplaySetupVariant, NoLayerVariant, NoCompositionTypeVariant,
+                            EmptyScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Simple buffer layers
+ */
+
+TEST_F(CompositionTest, HWCComposedNormalBufferLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, HWCComposedNormalBufferLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, REComposedNormalBufferLayer) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+                            ChangeCompositionTypeVariant<IComposerClient::Composition::DEVICE,
+                                                         IComposerClient::Composition::CLIENT>,
+                            RECompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenNormalBufferLayer) {
+    captureScreenComposition<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+                            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Single-color layers
+ */
+
+TEST_F(CompositionTest, HWCComposedColorLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, ColorLayerVariant<ColorLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::SOLID_COLOR>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, HWCComposedColorLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, ColorLayerVariant<ColorLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::SOLID_COLOR>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, REComposedColorLayer) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, ColorLayerVariant<ColorLayerProperties>,
+                            ChangeCompositionTypeVariant<IComposerClient::Composition::SOLID_COLOR,
+                                                         IComposerClient::Composition::CLIENT>,
+                            RECompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenColorLayer) {
+    captureScreenComposition<
+            CompositionCase<DefaultDisplaySetupVariant, ColorLayerVariant<ColorLayerProperties>,
+                            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Layers with sideband buffers
+ */
+
+TEST_F(CompositionTest, HWCComposedSidebandBufferLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SidebandLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::SIDEBAND>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, HWCComposedSidebandBufferLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SidebandLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::SIDEBAND>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, REComposedSidebandBufferLayer) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SidebandLayerProperties>,
+                            ChangeCompositionTypeVariant<IComposerClient::Composition::SIDEBAND,
+                                                         IComposerClient::Composition::CLIENT>,
+                            RECompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenSidebandBufferLayer) {
+    captureScreenComposition<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SidebandLayerProperties>,
+                            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Layers with ISurfaceComposerClient::eSecure, on a secure display
+ */
+
+TEST_F(CompositionTest, HWCComposedSecureBufferLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, HWCComposedSecureBufferLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, REComposedSecureBufferLayer) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            ChangeCompositionTypeVariant<IComposerClient::Composition::DEVICE,
+                                                         IComposerClient::Composition::CLIENT>,
+                            RECompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenSecureBufferLayerOnSecureDisplay) {
+    captureScreenComposition<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Layers with ISurfaceComposerClient::eSecure, on a non-secure display
+ */
+
+TEST_F(CompositionTest, HWCComposedSecureBufferLayerOnInsecureDisplayWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<InsecureDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::CLIENT>,
+                            ForcedClientCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, HWCComposedSecureBufferLayerOnInsecureDisplayWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<InsecureDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::CLIENT>,
+                            ForcedClientCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenSecureBufferLayerOnInsecureDisplay) {
+    captureScreenComposition<
+            CompositionCase<InsecureDisplaySetupVariant, BufferLayerVariant<SecureLayerProperties>,
+                            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Cursor layers
+ */
+
+TEST_F(CompositionTest, HWCComposedCursorLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<CursorLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::CURSOR>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, HWCComposedCursorLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<CursorLayerProperties>,
+                            KeepCompositionTypeVariant<IComposerClient::Composition::CURSOR>,
+                            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, REComposedCursorLayer) {
+    displayRefreshCompositionDirtyFrame<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<CursorLayerProperties>,
+                            ChangeCompositionTypeVariant<IComposerClient::Composition::CURSOR,
+                                                         IComposerClient::Composition::CLIENT>,
+                            RECompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenCursorLayer) {
+    captureScreenComposition<
+            CompositionCase<DefaultDisplaySetupVariant, BufferLayerVariant<CursorLayerProperties>,
+                            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+/* ------------------------------------------------------------------------
+ *  Simple buffer layer on a display which is powered off.
+ */
+
+TEST_F(CompositionTest, displayOffHWCComposedNormalBufferLayerWithDirtyGeometry) {
+    displayRefreshCompositionDirtyGeometry<CompositionCase<
+            PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+            KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
+            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, displayOffHWCComposedNormalBufferLayerWithDirtyFrame) {
+    displayRefreshCompositionDirtyFrame<CompositionCase<
+            PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+            KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
+            HwcCompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, displayOffREComposedNormalBufferLayer) {
+    displayRefreshCompositionDirtyFrame<CompositionCase<
+            PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+            ChangeCompositionTypeVariant<IComposerClient::Composition::DEVICE,
+                                         IComposerClient::Composition::CLIENT>,
+            RECompositionResultVariant>>();
+}
+
+TEST_F(CompositionTest, captureScreenNormalBufferLayerOnPoweredOffDisplay) {
+    captureScreenComposition<CompositionCase<
+            PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
+            NoCompositionTypeVariant, REScreenshotResultVariant>>();
+}
+
+} // namespace
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/DisplayIdentificationTest.cpp b/services/surfaceflinger/tests/unittests/DisplayIdentificationTest.cpp
new file mode 100644
index 0000000..4f1c99e
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/DisplayIdentificationTest.cpp
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include "DisplayHardware/DisplayIdentification.h"
+
+namespace android {
+namespace {
+
+const unsigned char kInternalEdid[] =
+        "\x00\xff\xff\xff\xff\xff\xff\x00\x4c\xa3\x42\x31\x00\x00\x00\x00"
+        "\x00\x15\x01\x03\x80\x1a\x10\x78\x0a\xd3\xe5\x95\x5c\x60\x90\x27"
+        "\x19\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
+        "\x01\x01\x01\x01\x01\x01\x9e\x1b\x00\xa0\x50\x20\x12\x30\x10\x30"
+        "\x13\x00\x05\xa3\x10\x00\x00\x19\x00\x00\x00\x0f\x00\x00\x00\x00"
+        "\x00\x00\x00\x00\x00\x23\x87\x02\x64\x00\x00\x00\x00\xfe\x00\x53"
+        "\x41\x4d\x53\x55\x4e\x47\x0a\x20\x20\x20\x20\x20\x00\x00\x00\xfe"
+        "\x00\x31\x32\x31\x41\x54\x31\x31\x2d\x38\x30\x31\x0a\x20\x00\x45";
+
+const unsigned char kExternalEdid[] =
+        "\x00\xff\xff\xff\xff\xff\xff\x00\x22\xf0\x6c\x28\x01\x01\x01\x01"
+        "\x02\x16\x01\x04\xb5\x40\x28\x78\xe2\x8d\x85\xad\x4f\x35\xb1\x25"
+        "\x0e\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
+        "\x01\x01\x01\x01\x01\x01\xe2\x68\x00\xa0\xa0\x40\x2e\x60\x30\x20"
+        "\x36\x00\x81\x90\x21\x00\x00\x1a\xbc\x1b\x00\xa0\x50\x20\x17\x30"
+        "\x30\x20\x36\x00\x81\x90\x21\x00\x00\x1a\x00\x00\x00\xfc\x00\x48"
+        "\x50\x20\x5a\x52\x33\x30\x77\x0a\x20\x20\x20\x20\x00\x00\x00\xff"
+        "\x00\x43\x4e\x34\x32\x30\x32\x31\x33\x37\x51\x0a\x20\x20\x00\x71";
+
+// Extended EDID with timing extension.
+const unsigned char kExternalEedid[] =
+        "\x00\xff\xff\xff\xff\xff\xff\x00\x4c\x2d\xfe\x08\x00\x00\x00\x00"
+        "\x29\x15\x01\x03\x80\x10\x09\x78\x0a\xee\x91\xa3\x54\x4c\x99\x26"
+        "\x0f\x50\x54\xbd\xef\x80\x71\x4f\x81\xc0\x81\x00\x81\x80\x95\x00"
+        "\xa9\xc0\xb3\x00\x01\x01\x02\x3a\x80\x18\x71\x38\x2d\x40\x58\x2c"
+        "\x45\x00\xa0\x5a\x00\x00\x00\x1e\x66\x21\x56\xaa\x51\x00\x1e\x30"
+        "\x46\x8f\x33\x00\xa0\x5a\x00\x00\x00\x1e\x00\x00\x00\xfd\x00\x18"
+        "\x4b\x0f\x51\x17\x00\x0a\x20\x20\x20\x20\x20\x20\x00\x00\x00\xfc"
+        "\x00\x53\x41\x4d\x53\x55\x4e\x47\x0a\x20\x20\x20\x20\x20\x01\x1d"
+        "\x02\x03\x1f\xf1\x47\x90\x04\x05\x03\x20\x22\x07\x23\x09\x07\x07"
+        "\x83\x01\x00\x00\xe2\x00\x0f\x67\x03\x0c\x00\x20\x00\xb8\x2d\x01"
+        "\x1d\x80\x18\x71\x1c\x16\x20\x58\x2c\x25\x00\xa0\x5a\x00\x00\x00"
+        "\x9e\x01\x1d\x00\x72\x51\xd0\x1e\x20\x6e\x28\x55\x00\xa0\x5a\x00"
+        "\x00\x00\x1e\x8c\x0a\xd0\x8a\x20\xe0\x2d\x10\x10\x3e\x96\x00\xa0"
+        "\x5a\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc6";
+
+template <size_t N>
+DisplayIdentificationData asDisplayIdentificationData(const unsigned char (&bytes)[N]) {
+    return DisplayIdentificationData(bytes, bytes + N - 1);
+}
+
+} // namespace
+
+TEST(DisplayIdentificationTest, isEdid) {
+    EXPECT_FALSE(isEdid({}));
+
+    EXPECT_TRUE(isEdid(asDisplayIdentificationData(kInternalEdid)));
+    EXPECT_TRUE(isEdid(asDisplayIdentificationData(kExternalEdid)));
+    EXPECT_TRUE(isEdid(asDisplayIdentificationData(kExternalEedid)));
+}
+
+TEST(DisplayIdentificationTest, parseEdid) {
+    auto data = asDisplayIdentificationData(kInternalEdid);
+    auto edid = parseEdid(data);
+    ASSERT_TRUE(edid);
+    EXPECT_EQ(0x4ca3u, edid->manufacturerId);
+    EXPECT_STREQ("SEC", edid->pnpId.data());
+    // ASCII text should be used as fallback if display name and serial number are missing.
+    EXPECT_EQ("121AT11-801", edid->displayName);
+
+    data = asDisplayIdentificationData(kExternalEdid);
+    edid = parseEdid(data);
+    ASSERT_TRUE(edid);
+    EXPECT_EQ(0x22f0u, edid->manufacturerId);
+    EXPECT_STREQ("HWP", edid->pnpId.data());
+    EXPECT_EQ("HP ZR30w", edid->displayName);
+
+    data = asDisplayIdentificationData(kExternalEedid);
+    edid = parseEdid(data);
+    ASSERT_TRUE(edid);
+    EXPECT_EQ(0x4c2du, edid->manufacturerId);
+    EXPECT_STREQ("SAM", edid->pnpId.data());
+    EXPECT_EQ("SAMSUNG", edid->displayName);
+}
+
+TEST(DisplayIdentificationTest, parseInvalidEdid) {
+    EXPECT_FALSE(isEdid({}));
+    EXPECT_FALSE(parseEdid({}));
+
+    // Display name must be printable.
+    auto data = asDisplayIdentificationData(kExternalEdid);
+    data[97] = '\x1b';
+    auto edid = parseEdid(data);
+    ASSERT_TRUE(edid);
+    // Serial number should be used as fallback if display name is invalid.
+    EXPECT_EQ("CN4202137Q", edid->displayName);
+
+    // Parsing should succeed even if EDID is truncated.
+    data.pop_back();
+    edid = parseEdid(data);
+    ASSERT_TRUE(edid);
+    EXPECT_EQ("CN4202137Q", edid->displayName);
+}
+
+TEST(DisplayIdentificationTest, getPnpId) {
+    EXPECT_FALSE(getPnpId(0));
+    EXPECT_FALSE(getPnpId(static_cast<uint16_t>(-1)));
+
+    EXPECT_STREQ("SEC", getPnpId(0x4ca3u).value_or(PnpId{}).data());
+    EXPECT_STREQ("HWP", getPnpId(0x22f0u).value_or(PnpId{}).data());
+    EXPECT_STREQ("SAM", getPnpId(0x4c2du).value_or(PnpId{}).data());
+}
+
+TEST(DisplayIdentificationTest, generateDisplayId) {
+    const auto primaryId = generateDisplayId(0, asDisplayIdentificationData(kInternalEdid));
+    ASSERT_TRUE(primaryId);
+
+    const auto secondaryId = generateDisplayId(1, asDisplayIdentificationData(kExternalEdid));
+    ASSERT_TRUE(secondaryId);
+
+    const auto tertiaryId = generateDisplayId(2, asDisplayIdentificationData(kExternalEedid));
+    ASSERT_TRUE(tertiaryId);
+
+    // Display IDs should be unique.
+    EXPECT_NE(primaryId, secondaryId);
+    EXPECT_NE(primaryId, tertiaryId);
+    EXPECT_NE(secondaryId, tertiaryId);
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index 9ac5f3b..b474e42 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -25,6 +25,7 @@
 #include "TestableSurfaceFlinger.h"
 #include "mock/DisplayHardware/MockComposer.h"
 #include "mock/DisplayHardware/MockDisplaySurface.h"
+#include "mock/MockDispSync.h"
 #include "mock/MockEventControlThread.h"
 #include "mock/MockEventThread.h"
 #include "mock/MockMessageQueue.h"
@@ -115,17 +116,18 @@
     // These mocks are created by the test, but are destroyed by SurfaceFlinger
     // by virtue of being stored into a std::unique_ptr. However we still need
     // to keep a reference to them for use in setting up call expectations.
-    RE::mock::RenderEngine* mRenderEngine = new RE::mock::RenderEngine();
+    renderengine::mock::RenderEngine* mRenderEngine = new renderengine::mock::RenderEngine();
     Hwc2::mock::Composer* mComposer = nullptr;
     mock::MessageQueue* mMessageQueue = new mock::MessageQueue();
     mock::SurfaceInterceptor* mSurfaceInterceptor = new mock::SurfaceInterceptor();
+    mock::DispSync* mPrimaryDispSync = new mock::DispSync();
 
     // These mocks are created only when expected to be created via a factory.
     sp<mock::GraphicBufferConsumer> mConsumer;
     sp<mock::GraphicBufferProducer> mProducer;
-    mock::NativeWindowSurface* mNativeWindowSurface = nullptr;
+    surfaceflinger::mock::NativeWindowSurface* mNativeWindowSurface = nullptr;
     sp<mock::NativeWindow> mNativeWindow;
-    RE::mock::Surface* mRenderSurface = nullptr;
+    renderengine::mock::Surface* mRenderSurface = nullptr;
 };
 
 DisplayTransactionTest::DisplayTransactionTest() {
@@ -135,6 +137,7 @@
 
     // Default to no wide color display support configured
     mFlinger.mutableHasWideColorDisplay() = false;
+    mFlinger.mutableUseColorManagement() = false;
     mFlinger.mutableDisplayColorSetting() = DisplayColorSetting::UNMANAGED;
 
     // Default to using HWC virtual displays
@@ -152,8 +155,9 @@
     mFlinger.mutableEventControlThread().reset(mEventControlThread);
     mFlinger.mutableEventThread().reset(mEventThread);
     mFlinger.mutableEventQueue().reset(mMessageQueue);
-    mFlinger.setupRenderEngine(std::unique_ptr<RE::RenderEngine>(mRenderEngine));
+    mFlinger.setupRenderEngine(std::unique_ptr<renderengine::RenderEngine>(mRenderEngine));
     mFlinger.mutableInterceptor().reset(mSurfaceInterceptor);
+    mFlinger.mutablePrimaryDispSync().reset(mPrimaryDispSync);
 
     injectMockComposer(0);
 }
@@ -191,11 +195,12 @@
     // This setup is only expected once per test.
     ASSERT_TRUE(mNativeWindowSurface == nullptr);
 
-    mNativeWindowSurface = new mock::NativeWindowSurface();
+    mNativeWindowSurface = new surfaceflinger::mock::NativeWindowSurface();
     mNativeWindow = new mock::NativeWindow();
 
-    mFlinger.setCreateNativeWindowSurface(
-            [this](auto) { return std::unique_ptr<NativeWindowSurface>(mNativeWindowSurface); });
+    mFlinger.setCreateNativeWindowSurface([this](auto) {
+        return std::unique_ptr<surfaceflinger::NativeWindowSurface>(mNativeWindowSurface);
+    });
 }
 
 bool DisplayTransactionTest::hasHwcDisplay(hwc2_display_t displayId) {
@@ -207,11 +212,11 @@
 }
 
 bool DisplayTransactionTest::hasDisplayDevice(sp<IBinder> displayToken) {
-    return mFlinger.mutableDisplays().indexOfKey(displayToken) >= 0;
+    return mFlinger.mutableDisplays().count(displayToken) == 1;
 }
 
 sp<DisplayDevice> DisplayTransactionTest::getDisplayDevice(sp<IBinder> displayToken) {
-    return mFlinger.mutableDisplays().valueFor(displayToken);
+    return mFlinger.mutableDisplays()[displayToken];
 }
 
 bool DisplayTransactionTest::hasCurrentDisplayState(sp<IBinder> displayToken) {
@@ -234,8 +239,8 @@
  *
  */
 
-template <DisplayDevice::DisplayType type, DisplayDevice::DisplayType hwcId, int width, int height,
-          Critical critical, Async async, Secure secure, int grallocUsage>
+template <DisplayDevice::DisplayType type, DisplayDevice::DisplayType displayId, int width,
+          int height, Critical critical, Async async, Secure secure, int grallocUsage>
 struct DisplayVariant {
     // The display width and height
     static constexpr int WIDTH = width;
@@ -245,7 +250,9 @@
 
     // The type for this display
     static constexpr DisplayDevice::DisplayType TYPE = type;
-    static constexpr DisplayDevice::DisplayType HWCOMPOSER_ID = hwcId;
+    static_assert(TYPE != DisplayDevice::DISPLAY_ID_INVALID);
+
+    static constexpr DisplayDevice::DisplayType DISPLAY_ID = displayId;
 
     // When creating native window surfaces for the framebuffer, whether those should be critical
     static constexpr Critical CRITICAL = critical;
@@ -257,7 +264,7 @@
     static constexpr Secure SECURE = secure;
 
     static auto makeFakeExistingDisplayInjector(DisplayTransactionTest* test) {
-        auto injector = FakeDisplayDeviceInjector(test->mFlinger, TYPE, HWCOMPOSER_ID);
+        auto injector = FakeDisplayDeviceInjector(test->mFlinger, TYPE, DISPLAY_ID);
         injector.setSecure(static_cast<bool>(SECURE));
         return injector;
     }
@@ -271,14 +278,15 @@
         // For simplicity, we only expect to create a single render surface for
         // each test.
         ASSERT_TRUE(test->mRenderSurface == nullptr);
-        test->mRenderSurface = new RE::mock::Surface();
+        test->mRenderSurface = new renderengine::mock::Surface();
         EXPECT_CALL(*test->mRenderEngine, createSurface())
-                .WillOnce(Return(ByMove(std::unique_ptr<RE::Surface>(test->mRenderSurface))));
+                .WillOnce(Return(ByMove(
+                        std::unique_ptr<renderengine::Surface>(test->mRenderSurface))));
         EXPECT_CALL(*test->mRenderSurface, setAsync(static_cast<bool>(ASYNC))).Times(1);
         EXPECT_CALL(*test->mRenderSurface, setCritical(static_cast<bool>(CRITICAL))).Times(1);
         EXPECT_CALL(*test->mRenderSurface, setNativeWindow(test->mNativeWindow.get())).Times(1);
-        EXPECT_CALL(*test->mRenderSurface, queryWidth()).WillOnce(Return(WIDTH));
-        EXPECT_CALL(*test->mRenderSurface, queryHeight()).WillOnce(Return(HEIGHT));
+        EXPECT_CALL(*test->mRenderSurface, getWidth()).WillOnce(Return(WIDTH));
+        EXPECT_CALL(*test->mRenderSurface, getHeight()).WillOnce(Return(HEIGHT));
     }
 
     static void setupFramebufferConsumerBufferQueueCallExpectations(DisplayTransactionTest* test) {
@@ -353,6 +361,8 @@
                     getDisplayAttribute(HWC_DISPLAY_ID, HWC_ACTIVE_CONFIG_ID,
                                         IComposerClient::Attribute::DPI_Y, _))
                 .WillOnce(DoAll(SetArgPointee<3>(DEFAULT_DPI), Return(Error::NONE)));
+        EXPECT_CALL(*test->mComposer, getDisplayIdentificationData(HWC_DISPLAY_ID, _, _))
+                .WillRepeatedly(Return(Error::UNSUPPORTED));
     }
 
     // Called by tests to set up HWC call expectations
@@ -383,11 +393,6 @@
                                  DisplayVariant<type, type, width, height, critical, Async::FALSE,
                                                 Secure::TRUE, GRALLOC_USAGE_PHYSICAL_DISPLAY>> {};
 
-// An invalid display
-using InvalidDisplayVariant =
-        DisplayVariant<DisplayDevice::DISPLAY_ID_INVALID, DisplayDevice::DISPLAY_ID_INVALID, 0, 0,
-                       Critical::FALSE, Async::FALSE, Secure::FALSE, 0>;
-
 // A primary display is a physical display that is critical
 using PrimaryDisplayVariant =
         PhysicalDisplayVariant<1001, DisplayDevice::DISPLAY_PRIMARY, 3840, 2160, Critical::TRUE>;
@@ -453,6 +458,7 @@
 
     static void injectConfigChange(DisplayTransactionTest* test) {
         test->mFlinger.mutableHasWideColorDisplay() = false;
+        test->mFlinger.mutableUseColorManagement() = false;
         test->mFlinger.mutableDisplayColorSetting() = DisplayColorSetting::UNMANAGED;
     }
 
@@ -471,6 +477,7 @@
     static constexpr bool WIDE_COLOR_SUPPORTED = true;
 
     static void injectConfigChange(DisplayTransactionTest* test) {
+        test->mFlinger.mutableUseColorManagement() = true;
         test->mFlinger.mutableHasWideColorDisplay() = true;
         test->mFlinger.mutableDisplayColorSetting() = DisplayColorSetting::UNMANAGED;
     }
@@ -499,6 +506,7 @@
     static constexpr bool WIDE_COLOR_SUPPORTED = false;
 
     static void injectConfigChange(DisplayTransactionTest* test) {
+        test->mFlinger.mutableUseColorManagement() = true;
         test->mFlinger.mutableHasWideColorDisplay() = true;
     }
 
@@ -578,7 +586,7 @@
 struct NonHwcPerFrameMetadataSupportVariant {
     static constexpr int PER_FRAME_METADATA_KEYS = 0;
     static void setupComposerCallExpectations(DisplayTransactionTest* test) {
-        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(_, _)).Times(0);
+        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(_)).Times(0);
     }
 };
 
@@ -586,9 +594,8 @@
 struct NoPerFrameMetadataSupportVariant {
     static constexpr int PER_FRAME_METADATA_KEYS = 0;
     static void setupComposerCallExpectations(DisplayTransactionTest* test) {
-        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(Display::HWC_DISPLAY_ID, _))
-                .WillOnce(DoAll(SetArgPointee<1>(std::vector<PerFrameMetadataKey>()),
-                                Return(Error::NONE)));
+        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(Display::HWC_DISPLAY_ID))
+                .WillOnce(Return(std::vector<PerFrameMetadataKey>()));
     }
 };
 
@@ -596,8 +603,8 @@
 struct Smpte2086PerFrameMetadataSupportVariant {
     static constexpr int PER_FRAME_METADATA_KEYS = HdrMetadata::Type::SMPTE2086;
     static void setupComposerCallExpectations(DisplayTransactionTest* test) {
-        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(Display::HWC_DISPLAY_ID, _))
-                .WillOnce(DoAll(SetArgPointee<1>(std::vector<PerFrameMetadataKey>({
+        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(Display::HWC_DISPLAY_ID))
+                .WillOnce(Return(std::vector<PerFrameMetadataKey>({
                                         PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X,
                                         PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y,
                                         PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_X,
@@ -608,8 +615,7 @@
                                         PerFrameMetadataKey::WHITE_POINT_Y,
                                         PerFrameMetadataKey::MAX_LUMINANCE,
                                         PerFrameMetadataKey::MIN_LUMINANCE,
-                                })),
-                                Return(Error::NONE)));
+                                })));
     }
 };
 
@@ -617,12 +623,11 @@
 struct Cta861_3_PerFrameMetadataSupportVariant {
     static constexpr int PER_FRAME_METADATA_KEYS = HdrMetadata::Type::CTA861_3;
     static void setupComposerCallExpectations(DisplayTransactionTest* test) {
-        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(Display::HWC_DISPLAY_ID, _))
-                .WillOnce(DoAll(SetArgPointee<1>(std::vector<PerFrameMetadataKey>({
+        EXPECT_CALL(*test->mComposer, getPerFrameMetadataKeys(Display::HWC_DISPLAY_ID))
+                .WillOnce(Return(std::vector<PerFrameMetadataKey>({
                                         PerFrameMetadataKey::MAX_CONTENT_LIGHT_LEVEL,
                                         PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL,
-                                })),
-                                Return(Error::NONE)));
+                                })));
     }
 };
 
@@ -658,7 +663,8 @@
 using SimpleHwcVirtualDisplayVariant = HwcVirtualDisplayVariant<1024, 768, Secure::TRUE>;
 using HwcVirtualDisplayCase =
         Case<SimpleHwcVirtualDisplayVariant, WideColorSupportNotConfiguredVariant,
-             NonHwcDisplayHdrSupportVariant, NonHwcPerFrameMetadataSupportVariant>;
+             HdrNotSupportedVariant<SimpleHwcVirtualDisplayVariant>,
+             NoPerFrameMetadataSupportVariant<SimpleHwcVirtualDisplayVariant>>;
 using WideColorP3ColorimetricDisplayCase =
         Case<PrimaryDisplayVariant, WideColorP3ColorimetricSupportedVariant<PrimaryDisplayVariant>,
              HdrNotSupportedVariant<PrimaryDisplayVariant>,
@@ -683,9 +689,7 @@
         Case<PrimaryDisplayVariant, WideColorNotSupportedVariant<PrimaryDisplayVariant>,
              HdrNotSupportedVariant<PrimaryDisplayVariant>,
              Cta861_3_PerFrameMetadataSupportVariant<PrimaryDisplayVariant>>;
-using InvalidDisplayCase = Case<InvalidDisplayVariant, WideColorSupportNotConfiguredVariant,
-                                NonHwcDisplayHdrSupportVariant,
-                                NoPerFrameMetadataSupportVariant<InvalidDisplayVariant>>;
+
 /* ------------------------------------------------------------------------
  *
  * SurfaceFlinger::onHotplugReceived
@@ -693,8 +697,8 @@
 
 TEST_F(DisplayTransactionTest, hotplugEnqueuesEventsForDisplayTransaction) {
     constexpr int currentSequenceId = 123;
-    constexpr hwc2_display_t displayId1 = 456;
-    constexpr hwc2_display_t displayId2 = 654;
+    constexpr hwc2_display_t hwcDisplayId1 = 456;
+    constexpr hwc2_display_t hwcDisplayId2 = 654;
 
     // --------------------------------------------------------------------
     // Preconditions
@@ -717,8 +721,8 @@
     // Invocation
 
     // Simulate two hotplug events (a connect and a disconnect)
-    mFlinger.onHotplugReceived(currentSequenceId, displayId1, HWC2::Connection::Connected);
-    mFlinger.onHotplugReceived(currentSequenceId, displayId2, HWC2::Connection::Disconnected);
+    mFlinger.onHotplugReceived(currentSequenceId, hwcDisplayId1, HWC2::Connection::Connected);
+    mFlinger.onHotplugReceived(currentSequenceId, hwcDisplayId2, HWC2::Connection::Disconnected);
 
     // --------------------------------------------------------------------
     // Postconditions
@@ -729,9 +733,9 @@
     // All events should be in the pending event queue.
     const auto& pendingEvents = mFlinger.mutablePendingHotplugEvents();
     ASSERT_EQ(2u, pendingEvents.size());
-    EXPECT_EQ(displayId1, pendingEvents[0].display);
+    EXPECT_EQ(hwcDisplayId1, pendingEvents[0].hwcDisplayId);
     EXPECT_EQ(HWC2::Connection::Connected, pendingEvents[0].connection);
-    EXPECT_EQ(displayId2, pendingEvents[1].display);
+    EXPECT_EQ(hwcDisplayId2, pendingEvents[1].hwcDisplayId);
     EXPECT_EQ(HWC2::Connection::Disconnected, pendingEvents[1].connection);
 }
 
@@ -967,6 +971,9 @@
     // The call clears the current render engine surface
     EXPECT_CALL(*mRenderEngine, resetCurrentSurface());
 
+    // The call ends any display resyncs
+    EXPECT_CALL(*mPrimaryDispSync, endResync()).Times(1);
+
     // --------------------------------------------------------------------
     // Invocation
 
@@ -1031,7 +1038,10 @@
     // --------------------------------------------------------------------
     // Invocation
 
-    auto state = DisplayDeviceState(Case::Display::TYPE, static_cast<bool>(Case::Display::SECURE));
+    DisplayDeviceState state;
+    state.type = Case::Display::TYPE;
+    state.isSecure = static_cast<bool>(Case::Display::SECURE);
+
     auto device = mFlinger.setupNewDisplayDeviceInternal(displayToken, Case::Display::TYPE, state,
                                                          displaySurface, producer);
 
@@ -1159,13 +1169,23 @@
     Case::PerFrameMetadataSupport::setupComposerCallExpectations(this);
 
     EXPECT_CALL(*mSurfaceInterceptor, saveDisplayCreation(_)).Times(1);
-    EXPECT_CALL(*mEventThread, onHotplugReceived(Case::Display::TYPE, true)).Times(1);
+    EXPECT_CALL(*mEventThread,
+                onHotplugReceived(Case::Display::TYPE == DisplayDevice::DISPLAY_PRIMARY
+                                          ? EventThread::DisplayType::Primary
+                                          : EventThread::DisplayType::External,
+                                  true))
+            .Times(1);
 }
 
 template <typename Case>
 void HandleTransactionLockedTest::setupCommonCallExpectationsForDisconnectProcessing() {
     EXPECT_CALL(*mSurfaceInterceptor, saveDisplayDeletion(_)).Times(1);
-    EXPECT_CALL(*mEventThread, onHotplugReceived(Case::Display::TYPE, false)).Times(1);
+    EXPECT_CALL(*mEventThread,
+                onHotplugReceived(Case::Display::TYPE == DisplayDevice::DISPLAY_PRIMARY
+                                          ? EventThread::DisplayType::Primary
+                                          : EventThread::DisplayType::External,
+                                  false))
+            .Times(1);
 }
 
 template <typename Case>
@@ -1196,7 +1216,7 @@
     static_assert(0 <= Case::Display::TYPE &&
                           Case::Display::TYPE < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES,
                   "Must use a valid physical display type index for the fixed-size array");
-    auto& displayToken = mFlinger.mutableBuiltinDisplays()[Case::Display::TYPE];
+    auto& displayToken = mFlinger.mutableDisplayTokens()[Case::Display::TYPE];
     ASSERT_TRUE(displayToken != nullptr);
 
     verifyDisplayIsConnected<Case>(displayToken);
@@ -1285,6 +1305,8 @@
     // Call Expectations
 
     EXPECT_CALL(*mComposer, isUsingVrComposer()).WillRepeatedly(Return(false));
+    EXPECT_CALL(*mComposer, getDisplayIdentificationData(Case::Display::HWC_DISPLAY_ID, _, _))
+            .Times(0);
 
     setupCommonCallExpectationsForDisconnectProcessing<Case>();
 
@@ -1302,7 +1324,7 @@
     // The display should not be set up as a built-in display.
     ASSERT_TRUE(0 <= Case::Display::TYPE &&
                 Case::Display::TYPE < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES);
-    auto displayToken = mFlinger.mutableBuiltinDisplays()[Case::Display::TYPE];
+    auto displayToken = mFlinger.mutableDisplayTokens()[Case::Display::TYPE];
     EXPECT_TRUE(displayToken == nullptr);
 
     // The existing token should have been removed
@@ -1395,7 +1417,7 @@
     // The display should not be set up as a primary built-in display.
     ASSERT_TRUE(0 <= Case::Display::TYPE &&
                 Case::Display::TYPE < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES);
-    auto displayToken = mFlinger.mutableBuiltinDisplays()[Case::Display::TYPE];
+    auto displayToken = mFlinger.mutableDisplayTokens()[Case::Display::TYPE];
     EXPECT_TRUE(displayToken == nullptr);
 }
 
@@ -1438,7 +1460,7 @@
     static_assert(0 <= Case::Display::TYPE &&
                           Case::Display::TYPE < DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES,
                   "Display type must be a built-in display");
-    EXPECT_NE(existing.token(), mFlinger.mutableBuiltinDisplays()[Case::Display::TYPE]);
+    EXPECT_NE(existing.token(), mFlinger.mutableDisplayTokens()[Case::Display::TYPE]);
 
     // A new display should be connected in its place
 
@@ -1467,7 +1489,11 @@
     // A virtual display was added to the current state, and it has a
     // surface(producer)
     sp<BBinder> displayToken = new BBinder();
-    DisplayDeviceState info(Case::Display::TYPE, static_cast<bool>(Case::Display::SECURE));
+
+    DisplayDeviceState info;
+    info.type = Case::Display::TYPE;
+    info.isSecure = static_cast<bool>(Case::Display::SECURE);
+
     sp<mock::GraphicBufferProducer> surface{new mock::GraphicBufferProducer()};
     info.surface = surface;
     mFlinger.mutableCurrentState().displays.add(displayToken, info);
@@ -1531,7 +1557,11 @@
     // A virtual display was added to the current state, but it does not have a
     // surface.
     sp<BBinder> displayToken = new BBinder();
-    DisplayDeviceState info(Case::Display::TYPE, static_cast<bool>(Case::Display::SECURE));
+
+    DisplayDeviceState info;
+    info.type = Case::Display::TYPE;
+    info.isSecure = static_cast<bool>(Case::Display::SECURE);
+
     mFlinger.mutableCurrentState().displays.add(displayToken, info);
 
     // --------------------------------------------------------------------
@@ -1709,11 +1739,11 @@
     // A display is set up
     auto nativeWindow = new mock::NativeWindow();
     auto displaySurface = new mock::DisplaySurface();
-    auto renderSurface = new RE::mock::Surface();
+    auto renderSurface = new renderengine::mock::Surface();
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.setNativeWindow(nativeWindow);
     display.setDisplaySurface(displaySurface);
-    display.setRenderSurface(std::unique_ptr<RE::Surface>(renderSurface));
+    display.setRenderSurface(std::unique_ptr<renderengine::Surface>(renderSurface));
     display.inject();
 
     // There is a change to the viewport state
@@ -1728,8 +1758,8 @@
     EXPECT_CALL(*renderSurface, setNativeWindow(nullptr)).Times(1);
     EXPECT_CALL(*displaySurface, resizeBuffers(newWidth, oldHeight)).Times(1);
     EXPECT_CALL(*renderSurface, setNativeWindow(nativeWindow)).Times(1);
-    EXPECT_CALL(*renderSurface, queryWidth()).WillOnce(Return(newWidth));
-    EXPECT_CALL(*renderSurface, queryHeight()).WillOnce(Return(oldHeight));
+    EXPECT_CALL(*renderSurface, getWidth()).WillOnce(Return(newWidth));
+    EXPECT_CALL(*renderSurface, getHeight()).WillOnce(Return(oldHeight));
 
     // --------------------------------------------------------------------
     // Invocation
@@ -1750,11 +1780,11 @@
     // A display is set up
     auto nativeWindow = new mock::NativeWindow();
     auto displaySurface = new mock::DisplaySurface();
-    auto renderSurface = new RE::mock::Surface();
+    auto renderSurface = new renderengine::mock::Surface();
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.setNativeWindow(nativeWindow);
     display.setDisplaySurface(displaySurface);
-    display.setRenderSurface(std::unique_ptr<RE::Surface>(renderSurface));
+    display.setRenderSurface(std::unique_ptr<renderengine::Surface>(renderSurface));
     display.inject();
 
     // There is a change to the viewport state
@@ -1769,8 +1799,8 @@
     EXPECT_CALL(*renderSurface, setNativeWindow(nullptr)).Times(1);
     EXPECT_CALL(*displaySurface, resizeBuffers(oldWidth, newHeight)).Times(1);
     EXPECT_CALL(*renderSurface, setNativeWindow(nativeWindow)).Times(1);
-    EXPECT_CALL(*renderSurface, queryWidth()).WillOnce(Return(oldWidth));
-    EXPECT_CALL(*renderSurface, queryHeight()).WillOnce(Return(newHeight));
+    EXPECT_CALL(*renderSurface, getWidth()).WillOnce(Return(oldWidth));
+    EXPECT_CALL(*renderSurface, getHeight()).WillOnce(Return(newHeight));
 
     // --------------------------------------------------------------------
     // Invocation
@@ -1810,40 +1840,6 @@
     EXPECT_FALSE(hasCurrentDisplayState(displayToken));
 }
 
-TEST_F(DisplayTransactionTest, setDisplayStateLockedDoesNothingWithInvalidDisplay) {
-    using Case = InvalidDisplayCase;
-
-    // --------------------------------------------------------------------
-    // Preconditions
-
-    // An invalid display is set up
-    auto display = Case::Display::makeFakeExistingDisplayInjector(this);
-    display.inject();
-
-    // The invalid display has some state
-    display.mutableCurrentDisplayState().layerStack = 654u;
-
-    // The requested display state tries to change the display state.
-    DisplayState state;
-    state.what = DisplayState::eLayerStackChanged;
-    state.token = display.token();
-    state.layerStack = 456;
-
-    // --------------------------------------------------------------------
-    // Invocation
-
-    uint32_t flags = mFlinger.setDisplayStateLocked(state);
-
-    // --------------------------------------------------------------------
-    // Postconditions
-
-    // The returned flags are empty
-    EXPECT_EQ(0u, flags);
-
-    // The current display layer stack value is unchanged.
-    EXPECT_EQ(654u, getCurrentDisplayState(display.token()).layerStack);
-}
-
 TEST_F(DisplayTransactionTest, setDisplayStateLockedDoesNothingWhenNoChanges) {
     using Case = SimplePrimaryDisplayCase;
 
@@ -2419,6 +2415,24 @@
     }
 };
 
+struct DispSyncIsSupportedVariant {
+    static void setupBeginResyncCallExpectations(DisplayTransactionTest* test) {
+        EXPECT_CALL(*test->mPrimaryDispSync, reset()).Times(1);
+        EXPECT_CALL(*test->mPrimaryDispSync, setPeriod(DEFAULT_REFRESH_RATE)).Times(1);
+        EXPECT_CALL(*test->mPrimaryDispSync, beginResync()).Times(1);
+    }
+
+    static void setupEndResyncCallExpectations(DisplayTransactionTest* test) {
+        EXPECT_CALL(*test->mPrimaryDispSync, endResync()).Times(1);
+    }
+};
+
+struct DispSyncNotSupportedVariant {
+    static void setupBeginResyncCallExpectations(DisplayTransactionTest* /* test */) {}
+
+    static void setupEndResyncCallExpectations(DisplayTransactionTest* /* test */) {}
+};
+
 // --------------------------------------------------------------------
 // Note:
 //
@@ -2440,6 +2454,7 @@
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::setupComposerCallExpectations(test, IComposerClient::PowerMode::ON);
         Case::EventThread::setupAcquireAndEnableVsyncCallExpectations(test);
+        Case::DispSync::setupBeginResyncCallExpectations(test);
         Case::setupRepaintEverythingCallExpectations(test);
     }
 
@@ -2469,6 +2484,7 @@
     template <typename Case>
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::EventThread::setupReleaseAndDisableVsyncCallExpectations(test);
+        Case::DispSync::setupEndResyncCallExpectations(test);
         Case::setupComposerCallExpectations(test, IComposerClient::PowerMode::OFF);
     }
 
@@ -2504,6 +2520,7 @@
     template <typename Case>
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::EventThread::setupAcquireAndEnableVsyncCallExpectations(test);
+        Case::DispSync::setupBeginResyncCallExpectations(test);
         Case::setupComposerCallExpectations(test, Case::Doze::ACTUAL_POWER_MODE_FOR_DOZE);
     }
 };
@@ -2522,6 +2539,7 @@
     template <typename Case>
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::EventThread::setupAcquireAndEnableVsyncCallExpectations(test);
+        Case::DispSync::setupBeginResyncCallExpectations(test);
         Case::setupComposerCallExpectations(test, IComposerClient::PowerMode::ON);
     }
 };
@@ -2531,6 +2549,7 @@
     template <typename Case>
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::EventThread::setupReleaseAndDisableVsyncCallExpectations(test);
+        Case::DispSync::setupEndResyncCallExpectations(test);
         Case::setupComposerCallExpectations(test, Case::Doze::ACTUAL_POWER_MODE_FOR_DOZE_SUSPEND);
     }
 };
@@ -2553,11 +2572,12 @@
 // --------------------------------------------------------------------
 
 template <typename DisplayVariant, typename DozeVariant, typename EventThreadVariant,
-          typename TransitionVariant>
+          typename DispSyncVariant, typename TransitionVariant>
 struct DisplayPowerCase {
     using Display = DisplayVariant;
     using Doze = DozeVariant;
     using EventThread = EventThreadVariant;
+    using DispSync = DispSyncVariant;
     using Transition = TransitionVariant;
 
     static auto injectDisplayWithInitialPowerMode(DisplayTransactionTest* test, int mode) {
@@ -2605,15 +2625,16 @@
 // In addition to having event thread support, we emulate doze support.
 template <typename TransitionVariant>
 using PrimaryDisplayPowerCase = DisplayPowerCase<PrimaryDisplayVariant, DozeIsSupportedVariant,
-                                                 EventThreadIsSupportedVariant, TransitionVariant>;
+                                                 EventThreadIsSupportedVariant,
+                                                 DispSyncIsSupportedVariant, TransitionVariant>;
 
 // A sample configuration for the external display.
 // In addition to not having event thread support, we emulate not having doze
 // support.
 template <typename TransitionVariant>
-using ExternalDisplayPowerCase =
-        DisplayPowerCase<ExternalDisplayVariant, DozeNotSupportedVariant,
-                         EventThreadNotSupportedVariant, TransitionVariant>;
+using ExternalDisplayPowerCase = DisplayPowerCase<ExternalDisplayVariant, DozeNotSupportedVariant,
+                                                  EventThreadNotSupportedVariant,
+                                                  DispSyncNotSupportedVariant, TransitionVariant>;
 
 class SetPowerModeInternalTest : public DisplayTransactionTest {
 public:
@@ -2670,7 +2691,7 @@
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();
 
-    // The diplay is already set to HWC_POWER_MODE_NORMAL
+    // The display is already set to HWC_POWER_MODE_NORMAL
     display.mutableDisplayDevice()->setPowerMode(HWC_POWER_MODE_NORMAL);
 
     // --------------------------------------------------------------------
@@ -2684,7 +2705,7 @@
     EXPECT_EQ(HWC_POWER_MODE_NORMAL, display.mutableDisplayDevice()->getPowerMode());
 }
 
-TEST_F(SetPowerModeInternalTest, setPowerModeInternalJustSetsInternalStateIfVirtualDisplay) {
+TEST_F(SetPowerModeInternalTest, setPowerModeInternalDoesNothingIfVirtualDisplay) {
     using Case = HwcVirtualDisplayCase;
 
     // --------------------------------------------------------------------
@@ -2699,13 +2720,13 @@
     auto display = Case::Display::makeFakeExistingDisplayInjector(this);
     display.inject();
 
-    // The display is set to HWC_POWER_MODE_OFF
-    getDisplayDevice(display.token())->setPowerMode(HWC_POWER_MODE_OFF);
+    // The display is set to HWC_POWER_MODE_NORMAL
+    getDisplayDevice(display.token())->setPowerMode(HWC_POWER_MODE_NORMAL);
 
     // --------------------------------------------------------------------
     // Invocation
 
-    mFlinger.setPowerModeInternal(display.mutableDisplayDevice(), HWC_POWER_MODE_NORMAL);
+    mFlinger.setPowerModeInternal(display.mutableDisplayDevice(), HWC_POWER_MODE_OFF);
 
     // --------------------------------------------------------------------
     // Postconditions
diff --git a/services/surfaceflinger/tests/unittests/EventControlThreadTest.cpp b/services/surfaceflinger/tests/unittests/EventControlThreadTest.cpp
index b346454..9dc4193 100644
--- a/services/surfaceflinger/tests/unittests/EventControlThreadTest.cpp
+++ b/services/surfaceflinger/tests/unittests/EventControlThreadTest.cpp
@@ -23,7 +23,7 @@
 #include <log/log.h>
 
 #include "AsyncCallRecorder.h"
-#include "EventControlThread.h"
+#include "Scheduler/EventControlThread.h"
 
 namespace android {
 namespace {
diff --git a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
index 80fdb80..fb3b7a2 100644
--- a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
+++ b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
@@ -25,7 +25,7 @@
 #include <utils/Errors.h>
 
 #include "AsyncCallRecorder.h"
-#include "EventThread.h"
+#include "Scheduler/EventThread.h"
 
 using namespace std::chrono_literals;
 using namespace std::placeholders;
@@ -71,7 +71,8 @@
                                               ConnectionEventRecorder& connectionEventRecorder,
                                               nsecs_t expectedTimestamp, unsigned expectedCount);
     void expectVsyncEventReceivedByConnection(nsecs_t expectedTimestamp, unsigned expectedCount);
-    void expectHotplugEventReceivedByConnection(int expectedDisplayType, bool expectedConnected);
+    void expectHotplugEventReceivedByConnection(EventThread::DisplayType expectedDisplayType,
+                                                bool expectedConnected);
 
     AsyncCallRecorder<void (*)(bool)> mVSyncSetEnabledCallRecorder;
     AsyncCallRecorder<void (*)(VSyncSource::Callback*)> mVSyncSetCallbackCallRecorder;
@@ -169,13 +170,16 @@
                                          expectedCount);
 }
 
-void EventThreadTest::expectHotplugEventReceivedByConnection(int expectedDisplayType,
-                                                             bool expectedConnected) {
+void EventThreadTest::expectHotplugEventReceivedByConnection(
+        EventThread::DisplayType expectedDisplayType, bool expectedConnected) {
+    const uint32_t expectedDisplayId =
+            expectedDisplayType == EventThread::DisplayType::Primary ? 0 : 1;
+
     auto args = mConnectionEventCallRecorder.waitForCall();
     ASSERT_TRUE(args.has_value());
     const auto& event = std::get<0>(args.value());
     EXPECT_EQ(DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG, event.header.type);
-    EXPECT_EQ(static_cast<unsigned>(expectedDisplayType), event.header.id);
+    EXPECT_EQ(expectedDisplayId, event.header.id);
     EXPECT_EQ(expectedConnected, event.hotplug.connected);
 }
 
@@ -394,28 +398,23 @@
 }
 
 TEST_F(EventThreadTest, postHotplugPrimaryDisconnect) {
-    mThread->onHotplugReceived(DisplayDevice::DISPLAY_PRIMARY, false);
-    expectHotplugEventReceivedByConnection(DisplayDevice::DISPLAY_PRIMARY, false);
+    mThread->onHotplugReceived(EventThread::DisplayType::Primary, false);
+    expectHotplugEventReceivedByConnection(EventThread::DisplayType::Primary, false);
 }
 
 TEST_F(EventThreadTest, postHotplugPrimaryConnect) {
-    mThread->onHotplugReceived(DisplayDevice::DISPLAY_PRIMARY, true);
-    expectHotplugEventReceivedByConnection(DisplayDevice::DISPLAY_PRIMARY, true);
+    mThread->onHotplugReceived(EventThread::DisplayType::Primary, true);
+    expectHotplugEventReceivedByConnection(EventThread::DisplayType::Primary, true);
 }
 
 TEST_F(EventThreadTest, postHotplugExternalDisconnect) {
-    mThread->onHotplugReceived(DisplayDevice::DISPLAY_EXTERNAL, false);
-    expectHotplugEventReceivedByConnection(DisplayDevice::DISPLAY_EXTERNAL, false);
+    mThread->onHotplugReceived(EventThread::DisplayType::External, false);
+    expectHotplugEventReceivedByConnection(EventThread::DisplayType::External, false);
 }
 
 TEST_F(EventThreadTest, postHotplugExternalConnect) {
-    mThread->onHotplugReceived(DisplayDevice::DISPLAY_EXTERNAL, true);
-    expectHotplugEventReceivedByConnection(DisplayDevice::DISPLAY_EXTERNAL, true);
-}
-
-TEST_F(EventThreadTest, postHotplugVirtualDisconnectIsFilteredOut) {
-    mThread->onHotplugReceived(DisplayDevice::DISPLAY_VIRTUAL, false);
-    EXPECT_FALSE(mConnectionEventCallRecorder.waitForUnexpectedCall().has_value());
+    mThread->onHotplugReceived(EventThread::DisplayType::External, true);
+    expectHotplugEventReceivedByConnection(EventThread::DisplayType::External, true);
 }
 
 } // namespace
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
new file mode 100644
index 0000000..df0d982
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -0,0 +1,186 @@
+#undef LOG_TAG
+#define LOG_TAG "SchedulerUnittests"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <log/log.h>
+
+#include "AsyncCallRecorder.h"
+#include "Scheduler/DispSync.h"
+#include "Scheduler/EventThread.h"
+#include "Scheduler/Scheduler.h"
+#include "mock/MockDispSync.h"
+#include "mock/MockEventThread.h"
+
+using testing::_;
+using testing::Return;
+
+namespace android {
+
+class SchedulerTest : public testing::Test {
+protected:
+    class MockEventThreadConnection : public BnDisplayEventConnection {
+    public:
+        MockEventThreadConnection() = default;
+        ~MockEventThreadConnection() = default;
+
+        MOCK_METHOD1(stealReceiveChannel, status_t(gui::BitTube* outChannel));
+        MOCK_METHOD1(setVsyncRate, status_t(uint32_t count));
+        MOCK_METHOD0(requestNextVsync, void());
+    };
+
+    /**
+     * This mock Scheduler class uses implementation of mock::EventThread but keeps everything else
+     * the same.
+     */
+    class MockScheduler : public android::Scheduler {
+    public:
+        MockScheduler(std::unique_ptr<EventThread> eventThread)
+              : mEventThread(std::move(eventThread)) {}
+
+        std::unique_ptr<EventThread> makeEventThread(
+                const std::string& /* connectionName */, DispSync* /* dispSync */,
+                nsecs_t /* phaseOffsetNs */,
+                impl::EventThread::ResyncWithRateLimitCallback /* resyncCallback */,
+                impl::EventThread::InterceptVSyncsCallback /* interceptCallback */) override {
+            return std::move(mEventThread);
+        }
+
+        MockScheduler() = default;
+        ~MockScheduler() override = default;
+
+        std::unique_ptr<EventThread> mEventThread;
+    };
+
+    SchedulerTest();
+    ~SchedulerTest() override;
+
+    sp<Scheduler::ConnectionHandle> mConnectionHandle;
+    mock::DispSync* mPrimaryDispSync = new mock::DispSync();
+    mock::EventThread* mEventThread;
+    std::unique_ptr<MockScheduler> mScheduler;
+    sp<MockEventThreadConnection> mEventThreadConnection;
+
+    AsyncCallRecorder<void (*)()> mResyncCallRecorder;
+    AsyncCallRecorder<void (*)(nsecs_t)> mInterceptVSyncCallRecorder;
+};
+
+SchedulerTest::SchedulerTest() {
+    const ::testing::TestInfo* const test_info =
+            ::testing::UnitTest::GetInstance()->current_test_info();
+    ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
+
+    std::unique_ptr<mock::EventThread> eventThread = std::make_unique<mock::EventThread>();
+    mEventThread = eventThread.get();
+    mScheduler = std::make_unique<MockScheduler>(std::move(eventThread));
+    mEventThreadConnection = new MockEventThreadConnection();
+
+    // createConnection call to scheduler makes a createEventConnection call to EventThread. Make
+    // sure that call gets executed and returns an EventThread::Connection object.
+    EXPECT_CALL(*mEventThread, createEventConnection())
+            .WillRepeatedly(Return(mEventThreadConnection));
+
+    mConnectionHandle = mScheduler->createConnection("appConnection", mPrimaryDispSync, 16,
+                                                     mResyncCallRecorder.getInvocable(),
+                                                     mInterceptVSyncCallRecorder.getInvocable());
+}
+
+SchedulerTest::~SchedulerTest() {
+    const ::testing::TestInfo* const test_info =
+            ::testing::UnitTest::GetInstance()->current_test_info();
+    ALOGD("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
+}
+
+namespace {
+/* ------------------------------------------------------------------------
+ * Test cases
+ */
+TEST_F(SchedulerTest, canCreateAndDestroyTest) {
+    EXPECT_FALSE(mResyncCallRecorder.waitForCall().has_value());
+    EXPECT_FALSE(mInterceptVSyncCallRecorder.waitForCall().has_value());
+    EXPECT_EQ(0, mConnectionHandle->id);
+}
+
+TEST_F(SchedulerTest, testNullPtr) {
+    // Passing a null pointer for ConnectionHandle is a valid argument. The code doesn't throw any
+    // exceptions, just gracefully continues.
+    sp<IDisplayEventConnection> returnedValue;
+    ASSERT_NO_FATAL_FAILURE(returnedValue = mScheduler->createDisplayEventConnection(nullptr));
+    EXPECT_TRUE(returnedValue == nullptr);
+    EXPECT_TRUE(mScheduler->getEventThread(nullptr) == nullptr);
+    EXPECT_TRUE(mScheduler->getEventConnection(nullptr) == nullptr);
+    ASSERT_NO_FATAL_FAILURE(
+            mScheduler->hotplugReceived(nullptr, EventThread::DisplayType::Primary, false));
+    ASSERT_NO_FATAL_FAILURE(mScheduler->onScreenAcquired(nullptr));
+    ASSERT_NO_FATAL_FAILURE(mScheduler->onScreenReleased(nullptr));
+    String8 testString;
+    ASSERT_NO_FATAL_FAILURE(mScheduler->dump(nullptr, testString));
+    EXPECT_TRUE(testString == "");
+    ASSERT_NO_FATAL_FAILURE(mScheduler->setPhaseOffset(nullptr, 10));
+}
+
+TEST_F(SchedulerTest, invalidConnectionHandle) {
+    // Passing an invalid ConnectionHandle is a valid argument. The code doesn't throw any
+    // exceptions, just gracefully continues.
+    sp<Scheduler::ConnectionHandle> connectionHandle = new Scheduler::ConnectionHandle(20);
+
+    sp<IDisplayEventConnection> returnedValue;
+    ASSERT_NO_FATAL_FAILURE(returnedValue =
+                                    mScheduler->createDisplayEventConnection(connectionHandle));
+    EXPECT_TRUE(returnedValue == nullptr);
+    EXPECT_TRUE(mScheduler->getEventThread(connectionHandle) == nullptr);
+    EXPECT_TRUE(mScheduler->getEventConnection(connectionHandle) == nullptr);
+
+    // The EXPECT_CALLS make sure we don't call the functions on the subsequent event threads.
+    EXPECT_CALL(*mEventThread, onHotplugReceived(_, _)).Times(0);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->hotplugReceived(connectionHandle,
+                                                        EventThread::DisplayType::Primary, false));
+
+    EXPECT_CALL(*mEventThread, onScreenAcquired()).Times(0);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->onScreenAcquired(connectionHandle));
+
+    EXPECT_CALL(*mEventThread, onScreenReleased()).Times(0);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->onScreenReleased(connectionHandle));
+
+    String8 testString;
+    EXPECT_CALL(*mEventThread, dump(_)).Times(0);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->dump(connectionHandle, testString));
+    EXPECT_TRUE(testString == "");
+
+    EXPECT_CALL(*mEventThread, setPhaseOffset(_)).Times(0);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->setPhaseOffset(connectionHandle, 10));
+}
+
+TEST_F(SchedulerTest, validConnectionHandle) {
+    sp<IDisplayEventConnection> returnedValue;
+    ASSERT_NO_FATAL_FAILURE(returnedValue =
+                                    mScheduler->createDisplayEventConnection(mConnectionHandle));
+    EXPECT_TRUE(returnedValue != nullptr);
+    ASSERT_EQ(returnedValue, mEventThreadConnection);
+
+    EXPECT_TRUE(mScheduler->getEventThread(mConnectionHandle) != nullptr);
+    EXPECT_TRUE(mScheduler->getEventConnection(mConnectionHandle) != nullptr);
+
+    EXPECT_CALL(*mEventThread, onHotplugReceived(EventThread::DisplayType::Primary, false))
+            .Times(1);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->hotplugReceived(mConnectionHandle,
+                                                        EventThread::DisplayType::Primary, false));
+
+    EXPECT_CALL(*mEventThread, onScreenAcquired()).Times(1);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->onScreenAcquired(mConnectionHandle));
+
+    EXPECT_CALL(*mEventThread, onScreenReleased()).Times(1);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->onScreenReleased(mConnectionHandle));
+
+    String8 testString("dump");
+    EXPECT_CALL(*mEventThread, dump(testString)).Times(1);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->dump(mConnectionHandle, testString));
+    EXPECT_TRUE(testString != "");
+
+    EXPECT_CALL(*mEventThread, setPhaseOffset(10)).Times(1);
+    ASSERT_NO_FATAL_FAILURE(mScheduler->setPhaseOffset(mConnectionHandle, 10));
+}
+
+} // namespace
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index acd16fe..2046439 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -17,13 +17,14 @@
 #pragma once
 
 #include "DisplayDevice.h"
+#include "Layer.h"
 #include "SurfaceFlinger.h"
 
 namespace android {
 
 class EventThread;
 
-namespace RE {
+namespace renderengine {
 class RenderEngine;
 }
 
@@ -36,7 +37,7 @@
     // Extend this as needed for accessing SurfaceFlinger private (and public)
     // functions.
 
-    void setupRenderEngine(std::unique_ptr<RE::RenderEngine> renderEngine) {
+    void setupRenderEngine(std::unique_ptr<renderengine::RenderEngine> renderEngine) {
         mFlinger->getBE().mRenderEngine = std::move(renderEngine);
     }
 
@@ -56,6 +57,21 @@
 
     using HotplugEvent = SurfaceFlinger::HotplugEvent;
 
+    auto& mutableLayerCurrentState(sp<Layer> layer) { return layer->mCurrentState; }
+    auto& mutableLayerDrawingState(sp<Layer> layer) { return layer->mDrawingState; }
+
+    void setLayerSidebandStream(sp<Layer> layer, sp<NativeHandle> sidebandStream) {
+        layer->getBE().compositionInfo.hwc.sidebandStream = sidebandStream;
+    }
+
+    void setLayerCompositionType(sp<Layer> layer, HWC2::Composition type) {
+        layer->getBE().mHwcLayers[DisplayDevice::DISPLAY_PRIMARY].compositionType = type;
+    };
+
+    void setLayerPotentialCursor(sp<Layer> layer, bool potentialCursor) {
+        layer->mPotentialCursor = potentialCursor;
+    }
+
     /* ------------------------------------------------------------------------
      * Forwarding for functions being tested
      */
@@ -64,15 +80,17 @@
         return mFlinger->createDisplay(displayName, secure);
     }
 
-    auto destroyDisplay(const sp<IBinder>& display) { return mFlinger->destroyDisplay(display); }
+    auto destroyDisplay(const sp<IBinder>& displayToken) {
+        return mFlinger->destroyDisplay(displayToken);
+    }
 
     auto resetDisplayState() { return mFlinger->resetDisplayState(); }
 
-    auto setupNewDisplayDeviceInternal(const wp<IBinder>& display, int hwcId,
+    auto setupNewDisplayDeviceInternal(const wp<IBinder>& displayToken, int32_t displayId,
                                        const DisplayDeviceState& state,
                                        const sp<DisplaySurface>& dispSurface,
                                        const sp<IGraphicBufferProducer>& producer) {
-        return mFlinger->setupNewDisplayDeviceInternal(display, hwcId, state, dispSurface,
+        return mFlinger->setupNewDisplayDeviceInternal(displayToken, displayId, state, dispSurface,
                                                        producer);
     }
 
@@ -89,8 +107,23 @@
 
     auto onInitializeDisplays() { return mFlinger->onInitializeDisplays(); }
 
-    auto setPowerModeInternal(const sp<DisplayDevice>& hw, int mode, bool stateLockHeld = false) {
-        return mFlinger->setPowerModeInternal(hw, mode, stateLockHeld);
+    auto setPowerModeInternal(const sp<DisplayDevice>& display, int mode,
+                              bool stateLockHeld = false) {
+        return mFlinger->setPowerModeInternal(display, mode, stateLockHeld);
+    }
+
+    auto onMessageReceived(int32_t what) { return mFlinger->onMessageReceived(what); }
+
+    auto captureScreenImplLocked(const RenderArea& renderArea,
+                                 TraverseLayersFunction traverseLayers, ANativeWindowBuffer* buffer,
+                                 bool useIdentityTransform, bool forSystem, int* outSyncFd) {
+        return mFlinger->captureScreenImplLocked(renderArea, traverseLayers, buffer,
+                                                 useIdentityTransform, forSystem, outSyncFd);
+    }
+
+    auto traverseLayersInDisplay(const sp<const DisplayDevice>& display,
+                                 const LayerVector::Visitor& visitor) {
+        return mFlinger->SurfaceFlinger::traverseLayersInDisplay(display, visitor);
     }
 
     /* ------------------------------------------------------------------------
@@ -110,20 +143,25 @@
      */
 
     auto& mutableHasWideColorDisplay() { return SurfaceFlinger::hasWideColorDisplay; }
+    auto& mutablePrimaryDisplayOrientation() { return SurfaceFlinger::primaryDisplayOrientation; }
+    auto& mutableUseColorManagement() { return SurfaceFlinger::useColorManagement; }
 
-    auto& mutableBuiltinDisplays() { return mFlinger->mBuiltinDisplays; }
     auto& mutableCurrentState() { return mFlinger->mCurrentState; }
-    auto& mutableDisplays() { return mFlinger->mDisplays; }
     auto& mutableDisplayColorSetting() { return mFlinger->mDisplayColorSetting; }
+    auto& mutableDisplays() { return mFlinger->mDisplays; }
+    auto& mutableDisplayTokens() { return mFlinger->mDisplayTokens; }
     auto& mutableDrawingState() { return mFlinger->mDrawingState; }
     auto& mutableEventControlThread() { return mFlinger->mEventControlThread; }
     auto& mutableEventQueue() { return mFlinger->mEventQueue; }
     auto& mutableEventThread() { return mFlinger->mEventThread; }
+    auto& mutableGeometryInvalid() { return mFlinger->mGeometryInvalid; }
     auto& mutableHWVsyncAvailable() { return mFlinger->mHWVsyncAvailable; }
     auto& mutableInterceptor() { return mFlinger->mInterceptor; }
     auto& mutableMainThreadId() { return mFlinger->mMainThreadId; }
     auto& mutablePendingHotplugEvents() { return mFlinger->mPendingHotplugEvents; }
+    auto& mutablePrimaryDispSync() { return mFlinger->mPrimaryDispSync; }
     auto& mutablePrimaryHWVsyncEnabled() { return mFlinger->mPrimaryHWVsyncEnabled; }
+    auto& mutableTexturePool() { return mFlinger->mTexturePool; }
     auto& mutableTransactionFlags() { return mFlinger->mTransactionFlags; }
     auto& mutableUseHwcVirtualDisplays() { return mFlinger->mUseHwcVirtualDisplays; }
 
@@ -141,6 +179,7 @@
         mutableEventQueue().reset();
         mutableEventThread().reset();
         mutableInterceptor().reset();
+        mutablePrimaryDispSync().reset();
         mFlinger->getBE().mHwc.reset();
         mFlinger->getBE().mRenderEngine.reset();
     }
@@ -153,7 +192,7 @@
     public:
         FakePowerAdvisor() = default;
         ~FakePowerAdvisor() override = default;
-        void setExpensiveRenderingExpected(hwc2_display_t, bool) override { }
+        void setExpensiveRenderingExpected(hwc2_display_t, bool) override {}
     };
 
     struct HWC2Display : public HWC2::Display {
@@ -168,6 +207,7 @@
 
         auto& mutableIsConnected() { return this->mIsConnected; }
         auto& mutableConfigs() { return this->mConfigs; }
+        auto& mutableLayers() { return this->mLayers; }
     };
 
     class FakeHwcDisplayInjector {
@@ -217,13 +257,27 @@
             return *this;
         }
 
-        auto& addCapability(HWC2::Capability cap) {
-            mCapabilities.emplace(cap);
+        auto& setCapabilities(const std::unordered_set<HWC2::Capability>* capabilities) {
+            mCapabilities = capabilities;
+            return *this;
+        }
+
+        auto& setPowerAdvisor(Hwc2::PowerAdvisor* powerAdvisor) {
+            mPowerAdvisor = powerAdvisor;
             return *this;
         }
 
         void inject(TestableSurfaceFlinger* flinger, Hwc2::Composer* composer) {
-            auto display = std::make_unique<HWC2Display>(*composer, mPowerAdvisor, mCapabilities,
+            static FakePowerAdvisor defaultPowerAdvisor;
+            if (mPowerAdvisor == nullptr) mPowerAdvisor = &defaultPowerAdvisor;
+            static const std::unordered_set<HWC2::Capability> defaultCapabilities;
+            if (mCapabilities == nullptr) mCapabilities = &defaultCapabilities;
+
+            // Caution - Make sure that any values passed by reference here do
+            // not refer to an instance owned by FakeHwcDisplayInjector. This
+            // class has temporary lifetime, while the constructed HWC2::Display
+            // is much longer lived.
+            auto display = std::make_unique<HWC2Display>(*composer, *mPowerAdvisor, *mCapabilities,
                                                          mHwcDisplayId, mHwcDisplayType);
 
             auto config = HWC2::Display::Config::Builder(*display, mActiveConfig);
@@ -236,7 +290,7 @@
             display->mutableIsConnected() = true;
 
             ASSERT_TRUE(flinger->mutableHwcDisplayData().size() > static_cast<size_t>(mType));
-            flinger->mutableHwcDisplayData()[mType].reset();
+            flinger->mutableHwcDisplayData()[mType] = HWComposer::DisplayData();
             flinger->mutableHwcDisplayData()[mType].hwcDisplay = display.get();
             flinger->mutableHwcDisplaySlots().emplace(mHwcDisplayId, mType);
 
@@ -253,15 +307,16 @@
         int32_t mDpiX = DEFAULT_DPI;
         int32_t mDpiY = DEFAULT_DPI;
         int32_t mActiveConfig = DEFAULT_ACTIVE_CONFIG;
-        std::unordered_set<HWC2::Capability> mCapabilities;
-        FakePowerAdvisor mPowerAdvisor;
+        const std::unordered_set<HWC2::Capability>* mCapabilities = nullptr;
+        Hwc2::PowerAdvisor* mPowerAdvisor = nullptr;
     };
 
     class FakeDisplayDeviceInjector {
     public:
         FakeDisplayDeviceInjector(TestableSurfaceFlinger& flinger, DisplayDevice::DisplayType type,
-                                  int hwcId)
-              : mFlinger(flinger), mType(type), mHwcId(hwcId) {}
+                                  int32_t displayId)
+              : mFlinger(flinger),
+                mCreationArgs(flinger.mFlinger.get(), mDisplayToken, type, displayId) {}
 
         sp<IBinder> token() const { return mDisplayToken; }
 
@@ -281,43 +336,52 @@
             return mFlinger.mutableCurrentState().displays.valueFor(mDisplayToken);
         }
 
-        auto& mutableDisplayDevice() { return mFlinger.mutableDisplays().valueFor(mDisplayToken); }
+        auto& mutableDisplayDevice() { return mFlinger.mutableDisplays()[mDisplayToken]; }
 
         auto& setNativeWindow(const sp<ANativeWindow>& nativeWindow) {
-            mNativeWindow = nativeWindow;
+            mCreationArgs.nativeWindow = nativeWindow;
             return *this;
         }
 
         auto& setDisplaySurface(const sp<DisplaySurface>& displaySurface) {
-            mDisplaySurface = displaySurface;
+            mCreationArgs.displaySurface = displaySurface;
             return *this;
         }
 
-        auto& setRenderSurface(std::unique_ptr<RE::Surface> renderSurface) {
-            mRenderSurface = std::move(renderSurface);
+        auto& setRenderSurface(std::unique_ptr<renderengine::Surface> renderSurface) {
+            mCreationArgs.renderSurface = std::move(renderSurface);
             return *this;
         }
 
         auto& setSecure(bool secure) {
-            mSecure = secure;
+            mCreationArgs.isSecure = secure;
+            return *this;
+        }
+
+        auto& setDisplaySize(int width, int height) {
+            mCreationArgs.displayWidth = width;
+            mCreationArgs.displayHeight = height;
+            return *this;
+        }
+
+        auto& setPowerMode(int mode) {
+            mCreationArgs.initialPowerMode = mode;
             return *this;
         }
 
         sp<DisplayDevice> inject() {
-            std::unordered_map<ui::ColorMode, std::vector<ui::RenderIntent>> hdrAndRenderIntents;
-            sp<DisplayDevice> device =
-                    new DisplayDevice(mFlinger.mFlinger.get(), mType, mHwcId, mSecure, mDisplayToken,
-                                      mNativeWindow, mDisplaySurface, std::move(mRenderSurface), 0,
-                                      0, false, HdrCapabilities(), 0, hdrAndRenderIntents,
-                                      HWC_POWER_MODE_NORMAL);
-            mFlinger.mutableDisplays().add(mDisplayToken, device);
+            DisplayDeviceState state;
+            state.type = mCreationArgs.type;
+            state.isSecure = mCreationArgs.isSecure;
 
-            DisplayDeviceState state(mType, mSecure);
+            sp<DisplayDevice> device = new DisplayDevice(std::move(mCreationArgs));
+            mFlinger.mutableDisplays().emplace(mDisplayToken, device);
             mFlinger.mutableCurrentState().displays.add(mDisplayToken, state);
             mFlinger.mutableDrawingState().displays.add(mDisplayToken, state);
 
-            if (mType >= DisplayDevice::DISPLAY_PRIMARY && mType < DisplayDevice::DISPLAY_VIRTUAL) {
-                mFlinger.mutableBuiltinDisplays()[mType] = mDisplayToken;
+            if (state.type >= DisplayDevice::DISPLAY_PRIMARY &&
+                state.type < DisplayDevice::DISPLAY_VIRTUAL) {
+                mFlinger.mutableDisplayTokens()[state.type] = mDisplayToken;
             }
 
             return device;
@@ -326,12 +390,7 @@
     private:
         TestableSurfaceFlinger& mFlinger;
         sp<BBinder> mDisplayToken = new BBinder();
-        DisplayDevice::DisplayType mType;
-        int mHwcId;
-        sp<ANativeWindow> mNativeWindow;
-        sp<DisplaySurface> mDisplaySurface;
-        std::unique_ptr<RE::Surface> mRenderSurface;
-        bool mSecure = false;
+        DisplayDeviceCreationArgs mCreationArgs;
     };
 
     sp<SurfaceFlinger> mFlinger = new SurfaceFlinger(SurfaceFlinger::SkipInitialization);
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
index 267670a..ecf3181 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
@@ -74,9 +74,10 @@
     MOCK_METHOD2(getDisplayType, Error(Display, IComposerClient::DisplayType*));
     MOCK_METHOD2(getDozeSupport, Error(Display, bool*));
     MOCK_METHOD5(getHdrCapabilities, Error(Display, std::vector<Hdr>*, float*, float*, float*));
-    MOCK_METHOD2(getPerFrameMetadataKeys,
-                 Error(Display, std::vector<IComposerClient::PerFrameMetadataKey>*));
+    MOCK_METHOD1(getPerFrameMetadataKeys,
+                 std::vector<IComposerClient::PerFrameMetadataKey>(Display));
     MOCK_METHOD2(getDataspaceSaturationMatrix, Error(Dataspace, mat4*));
+    MOCK_METHOD3(getDisplayIdentificationData, Error(Display, uint8_t*, std::vector<uint8_t>*));
     MOCK_METHOD3(getReleaseFences, Error(Display, std::vector<Layer>*, std::vector<int>*));
     MOCK_METHOD2(presentDisplay, Error(Display, int*));
     MOCK_METHOD2(setActiveConfig, Error(Display, Config));
@@ -111,6 +112,7 @@
     MOCK_METHOD3(setLayerZOrder, Error(Display, Layer, uint32_t));
     MOCK_METHOD4(setLayerInfo, Error(Display, Layer, uint32_t, uint32_t));
     MOCK_METHOD3(getRenderIntents, Error(Display, ColorMode, std::vector<RenderIntent>*));
+    MOCK_METHOD3(setLayerColorTransform, Error(Display, Layer, const float*));
 };
 
 } // namespace mock
diff --git a/services/surfaceflinger/tests/unittests/mock/MockDispSync.cpp b/services/surfaceflinger/tests/unittests/mock/MockDispSync.cpp
new file mode 100644
index 0000000..2f7e5ea
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/mock/MockDispSync.cpp
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mock/MockDispSync.h"
+
+namespace android {
+namespace mock {
+
+// Explicit default instantiation is recommended.
+DispSync::DispSync() = default;
+DispSync::~DispSync() = default;
+
+} // namespace mock
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/mock/MockDispSync.h b/services/surfaceflinger/tests/unittests/mock/MockDispSync.h
new file mode 100644
index 0000000..46d6558
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/mock/MockDispSync.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include <utils/String8.h>
+#include "Scheduler/DispSync.h"
+
+namespace android {
+namespace mock {
+
+class DispSync : public android::DispSync {
+public:
+    DispSync();
+    ~DispSync() override;
+
+    MOCK_METHOD0(reset, void());
+    MOCK_METHOD1(addPresentFence, bool(const std::shared_ptr<FenceTime>&));
+    MOCK_METHOD0(beginResync, void());
+    MOCK_METHOD1(addResyncSample, bool(nsecs_t));
+    MOCK_METHOD0(endResync, void());
+    MOCK_METHOD1(setPeriod, void(nsecs_t));
+    MOCK_METHOD1(scalePeriod, void(HWC2::Device::FrequencyScaler));
+    MOCK_METHOD0(getPeriod, nsecs_t());
+    MOCK_METHOD1(setRefreshSkipCount, void(int));
+    MOCK_METHOD3(addEventListener, status_t(const char*, nsecs_t, Callback*));
+    MOCK_METHOD1(removeEventListener, status_t(Callback*));
+    MOCK_METHOD2(changePhaseOffset, status_t(Callback*, nsecs_t));
+    MOCK_CONST_METHOD1(computeNextRefresh, nsecs_t(int));
+    MOCK_METHOD1(setIgnorePresentFences, void(bool));
+
+    MOCK_CONST_METHOD1(dump, void(String8&));
+};
+
+} // namespace mock
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/mock/MockEventControlThread.h b/services/surfaceflinger/tests/unittests/mock/MockEventControlThread.h
index 8ac09a9..6ef352a 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockEventControlThread.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockEventControlThread.h
@@ -18,7 +18,7 @@
 
 #include <gmock/gmock.h>
 
-#include "EventControlThread.h"
+#include "Scheduler/EventControlThread.h"
 
 namespace android {
 namespace mock {
diff --git a/services/surfaceflinger/tests/unittests/mock/MockEventThread.h b/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
index e6ea663..ad2463d 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
@@ -18,7 +18,7 @@
 
 #include <gmock/gmock.h>
 
-#include "EventThread.h"
+#include "Scheduler/EventThread.h"
 
 namespace android {
 namespace mock {
@@ -31,7 +31,7 @@
     MOCK_CONST_METHOD0(createEventConnection, sp<BnDisplayEventConnection>());
     MOCK_METHOD0(onScreenReleased, void());
     MOCK_METHOD0(onScreenAcquired, void());
-    MOCK_METHOD2(onHotplugReceived, void(int, bool));
+    MOCK_METHOD2(onHotplugReceived, void(DisplayType, bool));
     MOCK_CONST_METHOD1(dump, void(String8&));
     MOCK_METHOD1(setPhaseOffset, void(nsecs_t phaseOffset));
 };
diff --git a/services/surfaceflinger/tests/unittests/mock/MockMessageQueue.h b/services/surfaceflinger/tests/unittests/mock/MockMessageQueue.h
index cf07cf7..f2f3675 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockMessageQueue.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockMessageQueue.h
@@ -18,7 +18,7 @@
 
 #include <gmock/gmock.h>
 
-#include "MessageQueue.h"
+#include "Scheduler/MessageQueue.h"
 
 namespace android {
 namespace mock {
@@ -30,6 +30,7 @@
 
     MOCK_METHOD1(init, void(const sp<SurfaceFlinger>&));
     MOCK_METHOD1(setEventThread, void(android::EventThread*));
+    MOCK_METHOD1(setEventConnection, void(const sp<BnDisplayEventConnection>& connection));
     MOCK_METHOD0(waitMessage, void());
     MOCK_METHOD2(postMessage, status_t(const sp<MessageBase>&, nsecs_t));
     MOCK_METHOD0(invalidate, void());
diff --git a/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.cpp b/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.cpp
index 25ff39b..9cc6d38 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.cpp
+++ b/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.cpp
@@ -1,6 +1,6 @@
 /*
- * Copyright (C) 2018 The Android Open Source Project
- *
+ * Copyright 2018 The Android Open Source Project
+
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -16,12 +16,10 @@
 
 #include "mock/MockNativeWindowSurface.h"
 
-namespace android {
-namespace mock {
+namespace android::surfaceflinger::mock {
 
 // Explicit default instantiation is recommended.
 NativeWindowSurface::NativeWindowSurface() = default;
 NativeWindowSurface::~NativeWindowSurface() = default;
 
-} // namespace mock
-} // namespace android
+} // namespace android::surfaceflinger::mock
diff --git a/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.h b/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.h
index 88d1a9f..7bc1151 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockNativeWindowSurface.h
@@ -20,19 +20,17 @@
 
 #include <system/window.h> // for ANativeWindow
 
-#include "SurfaceFlinger.h" // for base NativeWindowSurface
+#include "NativeWindowSurface.h"
 
-namespace android {
-namespace mock {
+namespace android::surfaceflinger::mock {
 
-class NativeWindowSurface : public android::NativeWindowSurface {
+class NativeWindowSurface : public surfaceflinger::NativeWindowSurface {
 public:
     NativeWindowSurface();
-    ~NativeWindowSurface();
+    ~NativeWindowSurface() override;
 
     MOCK_CONST_METHOD0(getNativeWindow, sp<ANativeWindow>());
     MOCK_METHOD0(preallocateBuffers, void());
 };
 
-} // namespace mock
-} // namespace android
+} // namespace android::surfaceflinger::mock
diff --git a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp
index a98bece..af54df6 100644
--- a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp
+++ b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.cpp
@@ -16,8 +16,10 @@
 
 #include "mock/RenderEngine/MockRenderEngine.h"
 
+#include <ui/Region.h>
+
 namespace android {
-namespace RE {
+namespace renderengine {
 namespace mock {
 
 // Explicit default instantiation is recommended.
@@ -30,6 +32,9 @@
 Image::Image() = default;
 Image::~Image() = default;
 
+Framebuffer::Framebuffer() = default;
+Framebuffer::~Framebuffer() = default;
+
 } // namespace mock
-} // namespace RE
+} // namespace renderengine
 } // namespace android
diff --git a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h
index ac08293..6813cda 100644
--- a/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h
+++ b/services/surfaceflinger/tests/unittests/mock/RenderEngine/MockRenderEngine.h
@@ -18,49 +18,51 @@
 
 #include <gmock/gmock.h>
 
-#include "RenderEngine/Image.h"
-#include "RenderEngine/Mesh.h"
-#include "RenderEngine/RenderEngine.h"
-#include "RenderEngine/Surface.h"
-#include "RenderEngine/Texture.h"
+#include <renderengine/Framebuffer.h>
+#include <renderengine/Image.h>
+#include <renderengine/Mesh.h>
+#include <renderengine/RenderEngine.h>
+#include <renderengine/Surface.h>
+#include <renderengine/Texture.h>
 
 namespace android {
-namespace RE {
+namespace renderengine {
 namespace mock {
 
-class RenderEngine : public RE::RenderEngine {
+class RenderEngine : public renderengine::RenderEngine {
 public:
     RenderEngine();
     ~RenderEngine() override;
 
-    MOCK_METHOD0(createSurface, std::unique_ptr<RE::Surface>());
-    MOCK_METHOD0(createImage, std::unique_ptr<RE::Image>());
+    MOCK_METHOD0(createFramebuffer, std::unique_ptr<Framebuffer>());
+    MOCK_METHOD0(createSurface, std::unique_ptr<renderengine::Surface>());
+    MOCK_METHOD0(createImage, std::unique_ptr<renderengine::Image>());
     MOCK_CONST_METHOD0(primeCache, void());
     MOCK_METHOD1(dump, void(String8&));
-    MOCK_CONST_METHOD0(supportsImageCrop, bool());
+    MOCK_CONST_METHOD0(useNativeFenceSync, bool());
+    MOCK_CONST_METHOD0(useWaitSync, bool());
     MOCK_CONST_METHOD0(isCurrent, bool());
-    MOCK_METHOD1(setCurrentSurface, bool(const RE::Surface&));
+    MOCK_METHOD1(setCurrentSurface, bool(const renderengine::Surface&));
     MOCK_METHOD0(resetCurrentSurface, void());
     MOCK_METHOD0(flush, base::unique_fd());
     MOCK_METHOD0(finish, bool());
     MOCK_METHOD1(waitFence, bool(base::unique_fd*));
     bool waitFence(base::unique_fd fd) override { return waitFence(&fd); };
     MOCK_METHOD4(clearWithColor, void(float, float, float, float));
-    MOCK_METHOD6(fillRegionWithColor, void(const Region&, uint32_t, float, float, float, float));
-    MOCK_METHOD4(setScissor, void(uint32_t, uint32_t, uint32_t, uint32_t));
+    MOCK_METHOD5(fillRegionWithColor, void(const Region&, float, float, float, float));
+    MOCK_METHOD1(setScissor, void(const Rect&));
     MOCK_METHOD0(disableScissor, void());
     MOCK_METHOD2(genTextures, void(size_t, uint32_t*));
     MOCK_METHOD2(deleteTextures, void(size_t, uint32_t const*));
-    MOCK_METHOD2(bindExternalTextureImage, void(uint32_t, const RE::Image&));
-    MOCK_METHOD5(readPixels, void(size_t, size_t, size_t, size_t, uint32_t*));
+    MOCK_METHOD2(bindExternalTextureImage, void(uint32_t, const renderengine::Image&));
     MOCK_CONST_METHOD0(checkErrors, void());
-    MOCK_METHOD6(setViewportAndProjection,
-                 void(size_t, size_t, Rect, size_t, bool, Transform::orientation_flags));
+    MOCK_METHOD4(setViewportAndProjection,
+                 void(size_t, size_t, Rect, ui::Transform::orientation_flags));
     MOCK_METHOD4(setupLayerBlending, void(bool, bool, bool, const half4&));
     MOCK_METHOD1(setupLayerTexturing, void(const Texture&));
     MOCK_METHOD0(setupLayerBlackedOut, void());
     MOCK_METHOD4(setupFillWithColor, void(float, float, float, float));
-    MOCK_METHOD1(setupColorTransform, void(const mat4&));
+    MOCK_METHOD1(setColorTransform, void(const mat4&));
     MOCK_METHOD1(setSaturationMatrix, void(const mat4&));
     MOCK_METHOD0(disableTexturing, void());
     MOCK_METHOD0(disableBlending, void());
@@ -68,15 +70,14 @@
     MOCK_METHOD1(setSourceDataSpace, void(ui::Dataspace));
     MOCK_METHOD1(setOutputDataSpace, void(ui::Dataspace));
     MOCK_METHOD1(setDisplayMaxLuminance, void(const float));
-    MOCK_METHOD2(bindNativeBufferAsFrameBuffer,
-                 void(ANativeWindowBuffer*, RE::BindNativeBufferAsFramebuffer*));
-    MOCK_METHOD1(unbindNativeBufferAsFrameBuffer, void(RE::BindNativeBufferAsFramebuffer*));
+    MOCK_METHOD1(bindFrameBuffer, status_t(Framebuffer*));
+    MOCK_METHOD1(unbindFrameBuffer, void(Framebuffer*));
     MOCK_METHOD1(drawMesh, void(const Mesh&));
     MOCK_CONST_METHOD0(getMaxTextureSize, size_t());
     MOCK_CONST_METHOD0(getMaxViewportDims, size_t());
 };
 
-class Surface : public RE::Surface {
+class Surface : public renderengine::Surface {
 public:
     Surface();
     ~Surface() override;
@@ -89,20 +90,27 @@
     MOCK_CONST_METHOD0(queryGreenSize, int32_t());
     MOCK_CONST_METHOD0(queryBlueSize, int32_t());
     MOCK_CONST_METHOD0(queryAlphaSize, int32_t());
-    MOCK_CONST_METHOD0(queryWidth, int32_t());
-    MOCK_CONST_METHOD0(queryHeight, int32_t());
+    MOCK_CONST_METHOD0(getWidth, int32_t());
+    MOCK_CONST_METHOD0(getHeight, int32_t());
 };
 
-class Image : public RE::Image {
+class Image : public renderengine::Image {
 public:
     Image();
     ~Image() override;
 
-    MOCK_METHOD4(setNativeWindowBuffer,
-                 bool(ANativeWindowBuffer* buffer, bool isProtected, int32_t cropWidth,
-                      int32_t cropHeight));
+    MOCK_METHOD2(setNativeWindowBuffer,
+                 bool(ANativeWindowBuffer* buffer, bool isProtected));
+};
+
+class Framebuffer : public renderengine::Framebuffer {
+public:
+    Framebuffer();
+    ~Framebuffer() override;
+
+    MOCK_METHOD1(setNativeWindowBuffer, bool(ANativeWindowBuffer*));
 };
 
 } // namespace mock
-} // namespace RE
+} // namespace renderengine
 } // namespace android
diff --git a/services/vr/bufferhubd/Android.bp b/services/vr/bufferhubd/Android.bp
index 6122846..04b9511 100644
--- a/services/vr/bufferhubd/Android.bp
+++ b/services/vr/bufferhubd/Android.bp
@@ -12,45 +12,65 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-sourceFiles = [
-    "buffer_hub.cpp",
-    "bufferhubd.cpp",
-    "consumer_channel.cpp",
-    "producer_channel.cpp",
-    "detached_buffer_channel.cpp",
-    "consumer_queue_channel.cpp",
-    "producer_queue_channel.cpp",
-]
-
-headerLibraries = ["libdvr_headers"]
-
-staticLibraries = [
-    "libperformance",
-    "libbufferhub",
-]
-
 sharedLibraries = [
     "libbase",
     "libbinder",
     "libcutils",
-    "liblog",
-    "libsync",
-    "libutils",
     "libgui",
-    "libui",
+    "liblog",
     "libpdx_default_transport",
+    "libsync",
+    "libui",
+    "libutils",
 ]
 
+cc_library_static {
+    name: "libbufferhubd",
+    srcs: [
+        "binder/android/dvr/IBufferHub.aidl",
+        "buffer_channel.cpp",
+        "buffer_hub.cpp",
+        "buffer_hub_binder.cpp",
+        "buffer_node.cpp",
+        "consumer_channel.cpp",
+        "consumer_queue_channel.cpp",
+        "producer_channel.cpp",
+        "producer_queue_channel.cpp",
+    ],
+    cflags: [
+        "-DLOG_TAG=\"libbufferhubd\"",
+        "-DTRACE=0",
+        "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
+    ],
+    export_include_dirs: ["include"],
+    header_libs: ["libdvr_headers"],
+    shared_libs: sharedLibraries,
+    static_libs: [
+        "libbufferhub",
+    ],
+    aidl: {
+        local_include_dirs: ["binder"],
+        include_dirs: ["frameworks/native/aidl/binder"],
+        export_aidl_headers: true,
+    },
+}
+
 cc_binary {
-    srcs: sourceFiles,
+    srcs: ["bufferhubd.cpp"],
     cflags: [
         "-DLOG_TAG=\"bufferhubd\"",
         "-DTRACE=0",
         "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
     ],
-    header_libs: headerLibraries,
-    static_libs: staticLibraries,
+    header_libs: ["libdvr_headers"],
     shared_libs: sharedLibraries,
+    static_libs: [
+        "libbufferhub",
+        "libbufferhubd",
+        "libperformance",
+    ],
     name: "bufferhubd",
     init_rc: ["bufferhubd.rc"],
 }
+
+subdirs = ["tests"]
\ No newline at end of file
diff --git a/services/vr/bufferhubd/binder/android/dvr/IBufferHub.aidl b/services/vr/bufferhubd/binder/android/dvr/IBufferHub.aidl
new file mode 100644
index 0000000..6a86adc
--- /dev/null
+++ b/services/vr/bufferhubd/binder/android/dvr/IBufferHub.aidl
@@ -0,0 +1,5 @@
+package android.dvr;
+
+/** {@hide} */
+interface IBufferHub {
+}
\ No newline at end of file
diff --git a/services/vr/bufferhubd/buffer_channel.cpp b/services/vr/bufferhubd/buffer_channel.cpp
new file mode 100644
index 0000000..6d22dee
--- /dev/null
+++ b/services/vr/bufferhubd/buffer_channel.cpp
@@ -0,0 +1,206 @@
+#include <private/dvr/buffer_channel.h>
+#include <private/dvr/producer_channel.h>
+
+using android::pdx::BorrowedHandle;
+using android::pdx::ErrorStatus;
+using android::pdx::Message;
+using android::pdx::RemoteChannelHandle;
+using android::pdx::Status;
+using android::pdx::rpc::DispatchRemoteMethod;
+
+namespace android {
+namespace dvr {
+
+BufferChannel::BufferChannel(BufferHubService* service, int buffer_id,
+                             int channel_id, IonBuffer buffer,
+                             IonBuffer metadata_buffer,
+                             size_t user_metadata_size)
+    : BufferHubChannel(service, buffer_id, channel_id, kDetachedBufferType),
+      buffer_node_(std::make_shared<BufferNode>(
+          std::move(buffer), std::move(metadata_buffer), user_metadata_size)),
+      buffer_state_bit_(BufferHubDefs::FindFirstClearedBit()) {
+  buffer_node_->set_buffer_state_bit(buffer_state_bit_);
+}
+
+BufferChannel::BufferChannel(BufferHubService* service, int buffer_id,
+                             uint32_t width, uint32_t height,
+                             uint32_t layer_count, uint32_t format,
+                             uint64_t usage, size_t user_metadata_size)
+    : BufferHubChannel(service, buffer_id, buffer_id, kDetachedBufferType),
+      buffer_node_(std::make_shared<BufferNode>(
+          width, height, layer_count, format, usage, user_metadata_size)),
+      buffer_state_bit_(BufferHubDefs::FindFirstClearedBit()) {
+  buffer_node_->set_buffer_state_bit(buffer_state_bit_);
+}
+
+BufferChannel::BufferChannel(BufferHubService* service, int buffer_id,
+                             int channel_id,
+                             std::shared_ptr<BufferNode> buffer_node,
+                             uint64_t buffer_state_bit)
+    : BufferHubChannel(service, buffer_id, channel_id, kDetachedBufferType),
+      buffer_node_(buffer_node),
+      buffer_state_bit_(buffer_state_bit) {
+  buffer_node_->set_buffer_state_bit(buffer_state_bit_);
+}
+
+BufferChannel::~BufferChannel() {
+  ALOGD_IF(TRACE, "BufferChannel::~BufferChannel: channel_id=%d buffer_id=%d.",
+           channel_id(), buffer_id());
+  Hangup();
+}
+
+BufferHubChannel::BufferInfo BufferChannel::GetBufferInfo() const {
+  return BufferInfo(
+      buffer_id(), /*consumer_count=*/0, buffer_node_->buffer().width(),
+      buffer_node_->buffer().height(), buffer_node_->buffer().layer_count(),
+      buffer_node_->buffer().format(), buffer_node_->buffer().usage(),
+      /*pending_count=*/0, /*state=*/0, /*signaled_mask=*/0,
+      /*index=*/0);
+}
+
+void BufferChannel::HandleImpulse(Message& /*message*/) {
+  ATRACE_NAME("BufferChannel::HandleImpulse");
+}
+
+bool BufferChannel::HandleMessage(Message& message) {
+  ATRACE_NAME("BufferChannel::HandleMessage");
+  switch (message.GetOp()) {
+    case DetachedBufferRPC::Import::Opcode:
+      DispatchRemoteMethod<DetachedBufferRPC::Import>(
+          *this, &BufferChannel::OnImport, message);
+      return true;
+
+    case DetachedBufferRPC::Duplicate::Opcode:
+      DispatchRemoteMethod<DetachedBufferRPC::Duplicate>(
+          *this, &BufferChannel::OnDuplicate, message);
+      return true;
+
+    case DetachedBufferRPC::Promote::Opcode:
+      DispatchRemoteMethod<DetachedBufferRPC::Promote>(
+          *this, &BufferChannel::OnPromote, message);
+      return true;
+
+    default:
+      return false;
+  }
+}
+
+Status<BufferDescription<BorrowedHandle>> BufferChannel::OnImport(
+    Message& /*message*/) {
+  ATRACE_NAME("BufferChannel::OnImport");
+  ALOGD_IF(TRACE, "BufferChannel::OnImport: buffer=%d.",
+           buffer_id());
+
+  return BufferDescription<BorrowedHandle>{buffer_node_->buffer(),
+                                           buffer_node_->metadata_buffer(),
+                                           buffer_id(),
+                                           channel_id(),
+                                           buffer_state_bit_,
+                                           BorrowedHandle{},
+                                           BorrowedHandle{}};
+}
+
+Status<RemoteChannelHandle> BufferChannel::OnDuplicate(
+    Message& message) {
+  ATRACE_NAME("BufferChannel::OnDuplicate");
+  ALOGD_IF(TRACE, "BufferChannel::OnDuplicate: buffer=%d.",
+           buffer_id());
+
+  int channel_id;
+  auto status = message.PushChannel(0, nullptr, &channel_id);
+  if (!status) {
+    ALOGE(
+        "BufferChannel::OnDuplicate: Failed to push buffer channel: %s",
+        status.GetErrorMessage().c_str());
+    return ErrorStatus(ENOMEM);
+  }
+
+  // Try find the next buffer state bit which has not been claimed by any
+  // other buffers yet.
+  uint64_t buffer_state_bit =
+      BufferHubDefs::FindNextClearedBit(buffer_node_->active_buffer_bit_mask() |
+                                        BufferHubDefs::kProducerStateBit);
+  if (buffer_state_bit == 0ULL) {
+    ALOGE(
+        "BufferChannel::OnDuplicate: reached the maximum mumber of channels "
+        "per buffer node: 63.");
+    return ErrorStatus(E2BIG);
+  }
+
+  auto channel =
+      std::shared_ptr<BufferChannel>(new BufferChannel(
+          service(), buffer_id(), channel_id, buffer_node_, buffer_state_bit));
+  if (!channel) {
+    ALOGE("BufferChannel::OnDuplicate: Invalid buffer.");
+    return ErrorStatus(EINVAL);
+  }
+
+  const auto channel_status =
+      service()->SetChannel(channel_id, std::move(channel));
+  if (!channel_status) {
+    // Technically, this should never fail, as we just pushed the channel. Note
+    // that LOG_FATAL will be stripped out in non-debug build.
+    LOG_FATAL(
+        "BufferChannel::OnDuplicate: Failed to set new buffer channel: %s.",
+        channel_status.GetErrorMessage().c_str());
+  }
+
+  return status;
+}
+
+Status<RemoteChannelHandle> BufferChannel::OnPromote(
+    Message& message) {
+  ATRACE_NAME("BufferChannel::OnPromote");
+  ALOGD_IF(TRACE, "BufferChannel::OnPromote: buffer_id=%d", buffer_id());
+
+  // Check whether this is the channel exclusive owner of the buffer_node_.
+  if (buffer_state_bit_ != buffer_node_->active_buffer_bit_mask()) {
+    ALOGE(
+        "BufferChannel::OnPromote: Cannot promote this BufferChannel as its "
+        "BufferNode is shared between multiple channels. This channel's  state "
+        "bit=0x%" PRIx64 ", acitve_buffer_bit_mask=0x%" PRIx64 ".",
+        buffer_state_bit_, buffer_node_->active_buffer_bit_mask());
+    return ErrorStatus(EINVAL);
+  }
+
+  // Note that the new ProducerChannel will have different channel_id, but
+  // inherits the buffer_id from the DetachedBuffer.
+  int channel_id;
+  auto status = message.PushChannel(0, nullptr, &channel_id);
+  if (!status) {
+    ALOGE(
+        "BufferChannel::OnPromote: Failed to push ProducerChannel: %s.",
+        status.GetErrorMessage().c_str());
+    return ErrorStatus(ENOMEM);
+  }
+
+  IonBuffer buffer = std::move(buffer_node_->buffer());
+  IonBuffer metadata_buffer = std::move(buffer_node_->metadata_buffer());
+  size_t user_metadata_size = buffer_node_->user_metadata_size();
+
+  std::unique_ptr<ProducerChannel> channel = ProducerChannel::Create(
+      service(), buffer_id(), channel_id, std::move(buffer),
+      std::move(metadata_buffer), user_metadata_size);
+  if (!channel) {
+    ALOGE(
+        "BufferChannel::OnPromote: Failed to create ProducerChannel from a "
+        "BufferChannel, buffer_id=%d.",
+        buffer_id());
+  }
+
+  const auto channel_status =
+      service()->SetChannel(channel_id, std::move(channel));
+  if (!channel_status) {
+    // Technically, this should never fail, as we just pushed the channel. Note
+    // that LOG_FATAL will be stripped out in non-debug build.
+    LOG_FATAL(
+        "BufferChannel::OnPromote: Failed to set new producer buffer channel: "
+        "%s.",
+        channel_status.GetErrorMessage().c_str());
+  }
+
+  return status;
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/services/vr/bufferhubd/buffer_hub.cpp b/services/vr/bufferhubd/buffer_hub.cpp
index e57c8ed..15391da 100644
--- a/services/vr/bufferhubd/buffer_hub.cpp
+++ b/services/vr/bufferhubd/buffer_hub.cpp
@@ -1,9 +1,5 @@
-#include "buffer_hub.h"
-
 #include <inttypes.h>
-#include <log/log.h>
 #include <poll.h>
-#include <utils/Trace.h>
 
 #include <iomanip>
 #include <memory>
@@ -11,12 +7,15 @@
 #include <string>
 #include <thread>
 
+#include <log/log.h>
 #include <pdx/default_transport/service_endpoint.h>
 #include <private/dvr/bufferhub_rpc.h>
-#include "consumer_channel.h"
-#include "detached_buffer_channel.h"
-#include "producer_channel.h"
-#include "producer_queue_channel.h"
+#include <private/dvr/buffer_channel.h>
+#include <private/dvr/buffer_hub.h>
+#include <private/dvr/consumer_channel.h>
+#include <private/dvr/producer_channel.h>
+#include <private/dvr/producer_queue_channel.h>
+#include <utils/Trace.h>
 
 using android::pdx::Channel;
 using android::pdx::ErrorStatus;
@@ -267,7 +266,7 @@
       return {};
 
     case DetachedBufferRPC::Promote::Opcode:
-      // In addition to the message handler in the DetachedBufferChannel's
+      // In addition to the message handler in the BufferChannel's
       // HandleMessage method, we also need to invalid the channel. Note that
       // this has to be done after HandleMessage returns to make sure the IPC
       // request has went back to the client first.
@@ -332,9 +331,9 @@
     return ErrorStatus(EALREADY);
   }
 
-  std::unique_ptr<DetachedBufferChannel> channel =
-      DetachedBufferChannel::Create(this, buffer_id, width, height, layer_count,
-                                    format, usage, user_metadata_size);
+  std::unique_ptr<BufferChannel> channel =
+      BufferChannel::Create(this, buffer_id, width, height, layer_count, format,
+                            usage, user_metadata_size);
   if (!channel) {
     ALOGE(
         "BufferHubService::OnCreateDetachedBuffer: Failed to allocate buffer, "
diff --git a/services/vr/bufferhubd/buffer_hub_binder.cpp b/services/vr/bufferhubd/buffer_hub_binder.cpp
new file mode 100644
index 0000000..def15f1
--- /dev/null
+++ b/services/vr/bufferhubd/buffer_hub_binder.cpp
@@ -0,0 +1,33 @@
+#include <stdio.h>
+
+#include <log/log.h>
+#include <private/dvr/buffer_hub_binder.h>
+
+namespace android {
+namespace dvr {
+
+status_t BufferHubBinderService::start() {
+  ProcessState::self()->startThreadPool();
+  IPCThreadState::self()->disableBackgroundScheduling(true);
+  status_t result = BinderService<BufferHubBinderService>::publish();
+  if (result != OK) {
+    ALOGE("Publishing bufferhubd failed with error %d", result);
+    return result;
+  }
+
+  return result;
+}
+
+status_t BufferHubBinderService::dump(int fd, const Vector<String16> & /* args */) {
+  // TODO(b/115435506): not implemented yet
+  FILE *out = fdopen(dup(fd), "w");
+
+  fprintf(out, "BufferHubBinderService::dump(): Not Implemented.\n");
+
+  fclose(out);
+  return NO_ERROR;
+}
+
+
+}  // namespace dvr
+}  // namespace android
\ No newline at end of file
diff --git a/services/vr/bufferhubd/buffer_node.cpp b/services/vr/bufferhubd/buffer_node.cpp
new file mode 100644
index 0000000..5a04d0c
--- /dev/null
+++ b/services/vr/bufferhubd/buffer_node.cpp
@@ -0,0 +1,52 @@
+#include <private/dvr/buffer_hub_defs.h>
+#include <private/dvr/buffer_node.h>
+
+namespace android {
+namespace dvr {
+
+BufferNode::BufferNode(IonBuffer buffer, IonBuffer metadata_buffer,
+                       size_t user_metadata_size)
+    : buffer_(std::move(buffer)),
+      metadata_buffer_(std::move(metadata_buffer)),
+      user_metadata_size_(user_metadata_size) {}
+
+// Allocates a new BufferNode.
+BufferNode::BufferNode(uint32_t width, uint32_t height, uint32_t layer_count,
+                       uint32_t format, uint64_t usage,
+                       size_t user_metadata_size)
+    : user_metadata_size_(user_metadata_size) {
+  // The size the of metadata buffer is used as the "width" parameter during
+  // allocation. Thus it cannot overflow uint32_t.
+  if (user_metadata_size_ >= (std::numeric_limits<uint32_t>::max() -
+                              BufferHubDefs::kMetadataHeaderSize)) {
+    ALOGE(
+        "DetachedBufferChannel::DetachedBufferChannel: metadata size too big.");
+    return;
+  }
+
+  if (int ret = buffer_.Alloc(width, height, layer_count, format, usage)) {
+    ALOGE(
+        "DetachedBufferChannel::DetachedBufferChannel: Failed to allocate "
+        "buffer: %s",
+        strerror(-ret));
+    return;
+  }
+
+  // Buffer metadata has two parts: 1) a fixed sized metadata header; and 2)
+  // user requested metadata.
+  const size_t size = BufferHubDefs::kMetadataHeaderSize + user_metadata_size_;
+  if (int ret = metadata_buffer_.Alloc(size,
+                                       /*height=*/1,
+                                       /*layer_count=*/1,
+                                       BufferHubDefs::kMetadataFormat,
+                                       BufferHubDefs::kMetadataUsage)) {
+    ALOGE(
+        "DetachedBufferChannel::DetachedBufferChannel: Failed to allocate "
+        "metadata: %s",
+        strerror(-ret));
+    return;
+  }
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/services/vr/bufferhubd/bufferhubd.cpp b/services/vr/bufferhubd/bufferhubd.cpp
index b27f218..0ca7edc 100644
--- a/services/vr/bufferhubd/bufferhubd.cpp
+++ b/services/vr/bufferhubd/bufferhubd.cpp
@@ -1,13 +1,12 @@
 #include <sched.h>
+#include <sys/resource.h>
 #include <unistd.h>
 
-#include <log/log.h>
-#include <sys/resource.h>
-
 #include <dvr/performance_client_api.h>
+#include <log/log.h>
 #include <pdx/service_dispatcher.h>
-
-#include "buffer_hub.h"
+#include <private/dvr/buffer_hub.h>
+#include <private/dvr/buffer_hub_binder.h>
 
 int main(int, char**) {
   int ret = -1;
@@ -34,11 +33,14 @@
   else
     ALOGI("New nofile limit is %llu/%llu.", rlim.rlim_cur, rlim.rlim_max);
 
+  CHECK_ERROR(android::dvr::BufferHubBinderService::start() != android::OK,
+              error, "Failed to create bufferhub binder service\n");
+
   dispatcher = android::pdx::ServiceDispatcher::Create();
   CHECK_ERROR(!dispatcher, error, "Failed to create service dispatcher\n");
 
   service = android::dvr::BufferHubService::Create();
-  CHECK_ERROR(!service, error, "Failed to create buffer hub service\n");
+  CHECK_ERROR(!service, error, "Failed to create bufferhubd service\n");
   dispatcher->AddService(service);
 
   ret = dvrSetSchedulerClass(0, "graphics");
diff --git a/services/vr/bufferhubd/consumer_channel.cpp b/services/vr/bufferhubd/consumer_channel.cpp
index a6d2dbb..4ff7adf 100644
--- a/services/vr/bufferhubd/consumer_channel.cpp
+++ b/services/vr/bufferhubd/consumer_channel.cpp
@@ -1,12 +1,10 @@
-#include "consumer_channel.h"
-
-#include <log/log.h>
-#include <utils/Trace.h>
-
 #include <thread>
 
+#include <log/log.h>
 #include <private/dvr/bufferhub_rpc.h>
-#include "producer_channel.h"
+#include <private/dvr/consumer_channel.h>
+#include <private/dvr/producer_channel.h>
+#include <utils/Trace.h>
 
 using android::pdx::BorrowedHandle;
 using android::pdx::Channel;
@@ -92,11 +90,6 @@
           *this, &ConsumerChannel::OnConsumerRelease, message);
       return true;
 
-    case BufferHubRPC::ConsumerSetIgnore::Opcode:
-      DispatchRemoteMethod<BufferHubRPC::ConsumerSetIgnore>(
-          *this, &ConsumerChannel::OnConsumerSetIgnore, message);
-      return true;
-
     default:
       return false;
   }
@@ -122,9 +115,8 @@
   if (acquired_ || released_) {
     ALOGE(
         "ConsumerChannel::OnConsumerAcquire: Acquire when not posted: "
-        "ignored=%d acquired=%d released=%d channel_id=%d buffer_id=%d",
-        ignored_, acquired_, released_, message.GetChannelId(),
-        producer->buffer_id());
+        "acquired=%d released=%d channel_id=%d buffer_id=%d",
+        acquired_, released_, message.GetChannelId(), producer->buffer_id());
     return ErrorStatus(EBUSY);
   } else {
     auto status = producer->OnConsumerAcquire(message);
@@ -146,9 +138,8 @@
   if (!acquired_ || released_) {
     ALOGE(
         "ConsumerChannel::OnConsumerRelease: Release when not acquired: "
-        "ignored=%d acquired=%d released=%d channel_id=%d buffer_id=%d",
-        ignored_, acquired_, released_, message.GetChannelId(),
-        producer->buffer_id());
+        "acquired=%d released=%d channel_id=%d buffer_id=%d",
+        acquired_, released_, message.GetChannelId(), producer->buffer_id());
     return ErrorStatus(EBUSY);
   } else {
     auto status =
@@ -162,36 +153,11 @@
   }
 }
 
-Status<void> ConsumerChannel::OnConsumerSetIgnore(Message&, bool ignored) {
-  ATRACE_NAME("ConsumerChannel::OnConsumerSetIgnore");
-  auto producer = GetProducer();
-  if (!producer)
-    return ErrorStatus(EPIPE);
-
-  ignored_ = ignored;
-  if (ignored_ && acquired_) {
-    // Update the producer if ignore is set after the consumer acquires the
-    // buffer.
-    ClearAvailable();
-    producer->OnConsumerIgnored();
-    acquired_ = false;
-    released_ = true;
-  }
-
-  return {};
-}
-
 bool ConsumerChannel::OnProducerPosted() {
-  if (ignored_) {
-    acquired_ = false;
-    released_ = true;
-    return false;
-  } else {
-    acquired_ = false;
-    released_ = false;
-    SignalAvailable();
-    return true;
-  }
+  acquired_ = false;
+  released_ = false;
+  SignalAvailable();
+  return true;
 }
 
 void ConsumerChannel::OnProducerClosed() {
diff --git a/services/vr/bufferhubd/consumer_queue_channel.cpp b/services/vr/bufferhubd/consumer_queue_channel.cpp
index 4d43001..74b549d 100644
--- a/services/vr/bufferhubd/consumer_queue_channel.cpp
+++ b/services/vr/bufferhubd/consumer_queue_channel.cpp
@@ -1,8 +1,6 @@
-#include "consumer_queue_channel.h"
-
 #include <pdx/channel_handle.h>
-
-#include "producer_channel.h"
+#include <private/dvr/consumer_queue_channel.h>
+#include <private/dvr/producer_channel.h>
 
 using android::pdx::ErrorStatus;
 using android::pdx::RemoteChannelHandle;
diff --git a/services/vr/bufferhubd/detached_buffer_channel.cpp b/services/vr/bufferhubd/detached_buffer_channel.cpp
deleted file mode 100644
index a5cf68d..0000000
--- a/services/vr/bufferhubd/detached_buffer_channel.cpp
+++ /dev/null
@@ -1,159 +0,0 @@
-#include "detached_buffer_channel.h"
-#include "producer_channel.h"
-
-using android::pdx::BorrowedHandle;
-using android::pdx::ErrorStatus;
-using android::pdx::Message;
-using android::pdx::RemoteChannelHandle;
-using android::pdx::Status;
-using android::pdx::rpc::DispatchRemoteMethod;
-
-namespace android {
-namespace dvr {
-
-DetachedBufferChannel::DetachedBufferChannel(BufferHubService* service,
-                                             int buffer_id, int channel_id,
-                                             IonBuffer buffer,
-                                             IonBuffer metadata_buffer,
-                                             size_t user_metadata_size)
-    : BufferHubChannel(service, buffer_id, channel_id, kDetachedBufferType),
-      buffer_(std::move(buffer)),
-      metadata_buffer_(std::move(metadata_buffer)),
-      user_metadata_size_(user_metadata_size) {
-}
-
-DetachedBufferChannel::DetachedBufferChannel(BufferHubService* service,
-                                             int buffer_id, uint32_t width,
-                                             uint32_t height,
-                                             uint32_t layer_count,
-                                             uint32_t format, uint64_t usage,
-                                             size_t user_metadata_size)
-    : BufferHubChannel(service, buffer_id, buffer_id, kDetachedBufferType),
-      user_metadata_size_(user_metadata_size) {
-  // The size the of metadata buffer is used as the "width" parameter during
-  // allocation. Thus it cannot overflow uint32_t.
-  if (user_metadata_size_ >= (std::numeric_limits<uint32_t>::max() -
-                              BufferHubDefs::kMetadataHeaderSize)) {
-    ALOGE(
-        "DetachedBufferChannel::DetachedBufferChannel: metadata size too big.");
-    return;
-  }
-
-  if (int ret = buffer_.Alloc(width, height, layer_count, format, usage)) {
-    ALOGE(
-        "DetachedBufferChannel::DetachedBufferChannel: Failed to allocate "
-        "buffer: %s",
-        strerror(-ret));
-    return;
-  }
-
-  // Buffer metadata has two parts: 1) a fixed sized metadata header; and 2)
-  // user requested metadata.
-  const size_t size = BufferHubDefs::kMetadataHeaderSize + user_metadata_size_;
-  if (int ret = metadata_buffer_.Alloc(size,
-                                       /*height=*/1,
-                                       /*layer_count=*/1,
-                                       BufferHubDefs::kMetadataFormat,
-                                       BufferHubDefs::kMetadataUsage)) {
-    ALOGE(
-        "DetachedBufferChannel::DetachedBufferChannel: Failed to allocate "
-        "metadata: %s",
-        strerror(-ret));
-    return;
-  }
-}
-
-DetachedBufferChannel::~DetachedBufferChannel() {
-  ALOGD_IF(TRACE,
-           "DetachedBufferChannel::~DetachedBufferChannel: channel_id=%d "
-           "buffer_id=%d.",
-           channel_id(), buffer_id());
-  Hangup();
-}
-
-BufferHubChannel::BufferInfo DetachedBufferChannel::GetBufferInfo() const {
-  return BufferInfo(buffer_id(), /*consumer_count=*/0, buffer_.width(),
-                    buffer_.height(), buffer_.layer_count(), buffer_.format(),
-                    buffer_.usage(), /*pending_count=*/0, /*state=*/0,
-                    /*signaled_mask=*/0, /*index=*/0);
-}
-
-void DetachedBufferChannel::HandleImpulse(Message& /*message*/) {
-  ATRACE_NAME("DetachedBufferChannel::HandleImpulse");
-}
-
-bool DetachedBufferChannel::HandleMessage(Message& message) {
-  ATRACE_NAME("DetachedBufferChannel::HandleMessage");
-  switch (message.GetOp()) {
-    case DetachedBufferRPC::Import::Opcode:
-      DispatchRemoteMethod<DetachedBufferRPC::Import>(
-          *this, &DetachedBufferChannel::OnImport, message);
-      return true;
-
-    case DetachedBufferRPC::Promote::Opcode:
-      DispatchRemoteMethod<DetachedBufferRPC::Promote>(
-          *this, &DetachedBufferChannel::OnPromote, message);
-      return true;
-
-    default:
-      return false;
-  }
-}
-
-Status<BufferDescription<BorrowedHandle>> DetachedBufferChannel::OnImport(
-    Message& /*message*/) {
-  ATRACE_NAME("DetachedBufferChannel::OnGetBuffer");
-  ALOGD_IF(TRACE, "DetachedBufferChannel::OnGetBuffer: buffer=%d.",
-           buffer_id());
-
-  return BufferDescription<BorrowedHandle>{buffer_,
-                                           metadata_buffer_,
-                                           buffer_id(),
-                                           /*buffer_state_bit=*/0,
-                                           BorrowedHandle{},
-                                           BorrowedHandle{}};
-}
-
-Status<RemoteChannelHandle> DetachedBufferChannel::OnPromote(
-    Message& message) {
-  ATRACE_NAME("DetachedBufferChannel::OnPromote");
-  ALOGD_IF(TRACE, "DetachedBufferChannel::OnPromote: buffer_id=%d",
-           buffer_id());
-
-  // Note that the new ProducerChannel will have different channel_id, but
-  // inherits the buffer_id from the DetachedBuffer.
-  int channel_id;
-  auto status = message.PushChannel(0, nullptr, &channel_id);
-  if (!status) {
-    ALOGE(
-        "DetachedBufferChannel::OnPromote: Failed to push ProducerChannel: %s.",
-        status.GetErrorMessage().c_str());
-    return ErrorStatus(ENOMEM);
-  }
-
-  std::unique_ptr<ProducerChannel> channel = ProducerChannel::Create(
-      service(), buffer_id(), channel_id, std::move(buffer_),
-      std::move(metadata_buffer_), user_metadata_size_);
-  if (!channel) {
-    ALOGE(
-        "DetachedBufferChannel::OnPromote: Failed to create ProducerChannel "
-        "from a DetachedBufferChannel, buffer_id=%d.",
-        buffer_id());
-  }
-
-  const auto channel_status =
-      service()->SetChannel(channel_id, std::move(channel));
-  if (!channel_status) {
-    // Technically, this should never fail, as we just pushed the channel. Note
-    // that LOG_FATAL will be stripped out in non-debug build.
-    LOG_FATAL(
-        "DetachedBufferChannel::OnPromote: Failed to set new producer buffer "
-        "channel: %s.",
-        channel_status.GetErrorMessage().c_str());
-  }
-
-  return status;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/bufferhubd/detached_buffer_channel.h b/services/vr/bufferhubd/detached_buffer_channel.h
deleted file mode 100644
index 8b6dab8..0000000
--- a/services/vr/bufferhubd/detached_buffer_channel.h
+++ /dev/null
@@ -1,63 +0,0 @@
-#ifndef ANDROID_DVR_BUFFERHUBD_DETACHED_BUFFER_CHANNEL_H_
-#define ANDROID_DVR_BUFFERHUBD_DETACHED_BUFFER_CHANNEL_H_
-
-#include "buffer_hub.h"
-
-#include <pdx/channel_handle.h>
-#include <pdx/file_handle.h>
-
-namespace android {
-namespace dvr {
-
-class DetachedBufferChannel : public BufferHubChannel {
- public:
-  ~DetachedBufferChannel() override;
-
-  template <typename... Args>
-  static std::unique_ptr<DetachedBufferChannel> Create(Args&&... args) {
-    auto buffer = std::unique_ptr<DetachedBufferChannel>(
-        new DetachedBufferChannel(std::forward<Args>(args)...));
-    return buffer->IsValid() ? std::move(buffer) : nullptr;
-  }
-
-  // Returns whether the object holds a valid graphic buffer.
-  bool IsValid() const {
-    return buffer_.IsValid() && metadata_buffer_.IsValid();
-  }
-
-  size_t user_metadata_size() const { return user_metadata_size_; }
-
-  // Captures buffer info for use by BufferHubService::DumpState().
-  BufferInfo GetBufferInfo() const override;
-
-  bool HandleMessage(pdx::Message& message) override;
-  void HandleImpulse(pdx::Message& message) override;
-
- private:
-  // Creates a detached buffer from existing IonBuffers.
-  DetachedBufferChannel(BufferHubService* service, int buffer_id,
-                        int channel_id, IonBuffer buffer,
-                        IonBuffer metadata_buffer, size_t user_metadata_size);
-
-  // Allocates a new detached buffer.
-  DetachedBufferChannel(BufferHubService* service, int buffer_id,
-                        uint32_t width, uint32_t height, uint32_t layer_count,
-                        uint32_t format, uint64_t usage,
-                        size_t user_metadata_size);
-
-  pdx::Status<BufferDescription<pdx::BorrowedHandle>> OnImport(
-      pdx::Message& message);
-  pdx::Status<pdx::RemoteChannelHandle> OnPromote(pdx::Message& message);
-
-  // Gralloc buffer handles.
-  IonBuffer buffer_;
-  IonBuffer metadata_buffer_;
-
-  // Size of user requested metadata.
-  const size_t user_metadata_size_;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_BUFFERHUBD_DETACHED_BUFFER_CHANNEL_H_
diff --git a/services/vr/bufferhubd/include/private/dvr/buffer_channel.h b/services/vr/bufferhubd/include/private/dvr/buffer_channel.h
new file mode 100644
index 0000000..bcc93a1
--- /dev/null
+++ b/services/vr/bufferhubd/include/private/dvr/buffer_channel.h
@@ -0,0 +1,65 @@
+#ifndef ANDROID_DVR_BUFFERHUBD_BUFFER_CHANNEL_H_
+#define ANDROID_DVR_BUFFERHUBD_BUFFER_CHANNEL_H_
+
+#include <pdx/channel_handle.h>
+#include <pdx/file_handle.h>
+#include <private/dvr/buffer_hub.h>
+#include <private/dvr/buffer_node.h>
+
+namespace android {
+namespace dvr {
+
+class BufferChannel : public BufferHubChannel {
+ public:
+  ~BufferChannel() override;
+
+  template <typename... Args>
+  static std::unique_ptr<BufferChannel> Create(Args&&... args) {
+    auto buffer = std::unique_ptr<BufferChannel>(
+        new BufferChannel(std::forward<Args>(args)...));
+    return buffer->IsValid() ? std::move(buffer) : nullptr;
+  }
+
+  // Returns whether the object holds a valid graphic buffer.
+  bool IsValid() const {
+    return buffer_node_ != nullptr && buffer_node_->IsValid();
+  }
+
+  // Captures buffer info for use by BufferHubService::DumpState().
+  BufferInfo GetBufferInfo() const override;
+
+  bool HandleMessage(pdx::Message& message) override;
+  void HandleImpulse(pdx::Message& message) override;
+
+ private:
+  // Creates a detached buffer from existing IonBuffers.
+  BufferChannel(BufferHubService* service, int buffer_id, int channel_id,
+                IonBuffer buffer, IonBuffer metadata_buffer,
+                size_t user_metadata_size);
+
+  // Allocates a new detached buffer.
+  BufferChannel(BufferHubService* service, int buffer_id, uint32_t width,
+                uint32_t height, uint32_t layer_count, uint32_t format,
+                uint64_t usage, size_t user_metadata_size);
+
+  // Creates a detached buffer from an existing BufferNode.
+  BufferChannel(BufferHubService* service, int buffer_id, int channel_id,
+                std::shared_ptr<BufferNode> buffer_node,
+                uint64_t buffer_state_bit);
+
+  pdx::Status<BufferDescription<pdx::BorrowedHandle>> OnImport(
+      pdx::Message& message);
+  pdx::Status<pdx::RemoteChannelHandle> OnDuplicate(pdx::Message& message);
+  pdx::Status<pdx::RemoteChannelHandle> OnPromote(pdx::Message& message);
+
+  // The concrete implementation of the Buffer object.
+  std::shared_ptr<BufferNode> buffer_node_;
+
+  // The state bit of this buffer. Must be one the lower 63 bits.
+  uint64_t buffer_state_bit_;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_BUFFERHUBD_BUFFER_CHANNEL_H_
diff --git a/services/vr/bufferhubd/buffer_hub.h b/services/vr/bufferhubd/include/private/dvr/buffer_hub.h
similarity index 100%
rename from services/vr/bufferhubd/buffer_hub.h
rename to services/vr/bufferhubd/include/private/dvr/buffer_hub.h
diff --git a/services/vr/bufferhubd/include/private/dvr/buffer_hub_binder.h b/services/vr/bufferhubd/include/private/dvr/buffer_hub_binder.h
new file mode 100644
index 0000000..c0281fd
--- /dev/null
+++ b/services/vr/bufferhubd/include/private/dvr/buffer_hub_binder.h
@@ -0,0 +1,23 @@
+#ifndef ANDROID_DVR_BUFFER_HUB_BINDER_H
+#define ANDROID_DVR_BUFFER_HUB_BINDER_H
+
+#include <binder/BinderService.h>
+
+#include "android/dvr/BnBufferHub.h"
+
+namespace android {
+namespace dvr {
+
+class BufferHubBinderService : public BinderService<BufferHubBinderService>, public BnBufferHub {
+ public:
+  static status_t start();
+  static const char* getServiceName() { return "bufferhubd"; }
+  // Dump bufferhub related information to given fd (usually stdout)
+  // usage: adb shell dumpsys bufferhubd
+  virtual status_t dump(int fd, const Vector<String16> &args) override;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif // ANDROID_DVR_BUFFER_HUB_BINDER_H
\ No newline at end of file
diff --git a/services/vr/bufferhubd/include/private/dvr/buffer_node.h b/services/vr/bufferhubd/include/private/dvr/buffer_node.h
new file mode 100644
index 0000000..4bcf4e3
--- /dev/null
+++ b/services/vr/bufferhubd/include/private/dvr/buffer_node.h
@@ -0,0 +1,55 @@
+#ifndef ANDROID_DVR_BUFFERHUBD_BUFFER_NODE_H_
+#define ANDROID_DVR_BUFFERHUBD_BUFFER_NODE_H_
+
+#include <private/dvr/ion_buffer.h>
+
+namespace android {
+namespace dvr {
+
+class BufferNode {
+ public:
+  // Creates a BufferNode from existing IonBuffers, i.e. creating from an
+  // existing ProducerChannel.
+  BufferNode(IonBuffer buffer, IonBuffer metadata_buffer,
+             size_t user_metadata_size);
+
+  // Allocates a new BufferNode.
+  BufferNode(uint32_t width, uint32_t height, uint32_t layer_count,
+             uint32_t format, uint64_t usage, size_t user_metadata_size);
+
+  // Returns whether the object holds a valid graphic buffer.
+  bool IsValid() const {
+    return buffer_.IsValid() && metadata_buffer_.IsValid();
+  }
+
+  size_t user_metadata_size() const { return user_metadata_size_; }
+  uint64_t active_buffer_bit_mask() const { return active_buffer_bit_mask_; }
+  void set_buffer_state_bit(uint64_t buffer_state_bit) {
+    active_buffer_bit_mask_ |= buffer_state_bit;
+  }
+
+  // Used to take out IonBuffers.
+  IonBuffer& buffer() { return buffer_; }
+  IonBuffer& metadata_buffer() { return metadata_buffer_; }
+
+  // Used to access IonBuffers.
+  const IonBuffer& buffer() const { return buffer_; }
+  const IonBuffer& metadata_buffer() const { return metadata_buffer_; }
+
+ private:
+  // Gralloc buffer handles.
+  IonBuffer buffer_;
+  IonBuffer metadata_buffer_;
+
+  // Size of user requested metadata.
+  const size_t user_metadata_size_;
+
+  // All active buffer bits. Valid bits are the lower 63 bits, while the
+  // highest bit is reserved for the exclusive writing and should not be set.
+  uint64_t active_buffer_bit_mask_ = 0ULL;
+};
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_BUFFERHUBD_BUFFER_NODE_H_
diff --git a/services/vr/bufferhubd/consumer_channel.h b/services/vr/bufferhubd/include/private/dvr/consumer_channel.h
similarity index 90%
rename from services/vr/bufferhubd/consumer_channel.h
rename to services/vr/bufferhubd/include/private/dvr/consumer_channel.h
index 55cf969..84f664d 100644
--- a/services/vr/bufferhubd/consumer_channel.h
+++ b/services/vr/bufferhubd/include/private/dvr/consumer_channel.h
@@ -1,10 +1,9 @@
 #ifndef ANDROID_DVR_BUFFERHUBD_CONSUMER_CHANNEL_H_
 #define ANDROID_DVR_BUFFERHUBD_CONSUMER_CHANNEL_H_
 
-#include "buffer_hub.h"
-
 #include <pdx/rpc/buffer_wrapper.h>
 #include <private/dvr/bufferhub_rpc.h>
+#include <private/dvr/buffer_hub.h>
 
 namespace android {
 namespace dvr {
@@ -38,12 +37,10 @@
   pdx::Status<LocalFence> OnConsumerAcquire(Message& message);
   pdx::Status<void> OnConsumerRelease(Message& message,
                                       LocalFence release_fence);
-  pdx::Status<void> OnConsumerSetIgnore(Message& message, bool ignore);
 
   uint64_t consumer_state_bit_{0};
   bool acquired_{false};
   bool released_{true};
-  bool ignored_{false};  // True if we are ignoring events.
   std::weak_ptr<Channel> producer_;
 
   ConsumerChannel(const ConsumerChannel&) = delete;
diff --git a/services/vr/bufferhubd/consumer_queue_channel.h b/services/vr/bufferhubd/include/private/dvr/consumer_queue_channel.h
similarity index 93%
rename from services/vr/bufferhubd/consumer_queue_channel.h
rename to services/vr/bufferhubd/include/private/dvr/consumer_queue_channel.h
index 8437c4c..d98dbbc 100644
--- a/services/vr/bufferhubd/consumer_queue_channel.h
+++ b/services/vr/bufferhubd/include/private/dvr/consumer_queue_channel.h
@@ -1,14 +1,12 @@
 #ifndef ANDROID_DVR_BUFFERHUBD_CONSUMER_QUEUE_CHANNEL_H_
 #define ANDROID_DVR_BUFFERHUBD_CONSUMER_QUEUE_CHANNEL_H_
 
-#include "buffer_hub.h"
-
-#include <private/dvr/bufferhub_rpc.h>
-
 #include <queue>
 
-#include "consumer_channel.h"
-#include "producer_queue_channel.h"
+#include <private/dvr/bufferhub_rpc.h>
+#include <private/dvr/buffer_hub.h>
+#include <private/dvr/consumer_channel.h>
+#include <private/dvr/producer_queue_channel.h>
 
 namespace android {
 namespace dvr {
diff --git a/services/vr/bufferhubd/producer_channel.h b/services/vr/bufferhubd/include/private/dvr/producer_channel.h
similarity index 96%
rename from services/vr/bufferhubd/producer_channel.h
rename to services/vr/bufferhubd/include/private/dvr/producer_channel.h
index 67fdf15..b4ea115 100644
--- a/services/vr/bufferhubd/producer_channel.h
+++ b/services/vr/bufferhubd/include/private/dvr/producer_channel.h
@@ -1,8 +1,6 @@
 #ifndef ANDROID_DVR_BUFFERHUBD_PRODUCER_CHANNEL_H_
 #define ANDROID_DVR_BUFFERHUBD_PRODUCER_CHANNEL_H_
 
-#include "buffer_hub.h"
-
 #include <functional>
 #include <memory>
 #include <vector>
@@ -11,6 +9,7 @@
 #include <pdx/file_handle.h>
 #include <pdx/rpc/buffer_wrapper.h>
 #include <private/dvr/bufferhub_rpc.h>
+#include <private/dvr/buffer_hub.h>
 #include <private/dvr/ion_buffer.h>
 
 namespace android {
@@ -43,6 +42,8 @@
 
   ~ProducerChannel() override;
 
+  uint64_t buffer_state() const { return buffer_state_->load(); }
+
   bool HandleMessage(Message& message) override;
   void HandleImpulse(Message& message) override;
 
@@ -57,7 +58,7 @@
   pdx::Status<void> OnConsumerRelease(Message& message,
                                       LocalFence release_fence);
 
-  void OnConsumerIgnored();
+  void DecrementPendingConsumers();
   void OnConsumerOrphaned(ConsumerChannel* channel);
 
   void AddConsumer(ConsumerChannel* channel);
diff --git a/services/vr/bufferhubd/producer_queue_channel.h b/services/vr/bufferhubd/include/private/dvr/producer_queue_channel.h
similarity index 89%
rename from services/vr/bufferhubd/producer_queue_channel.h
rename to services/vr/bufferhubd/include/private/dvr/producer_queue_channel.h
index e825f47..c4003da 100644
--- a/services/vr/bufferhubd/producer_queue_channel.h
+++ b/services/vr/bufferhubd/include/private/dvr/producer_queue_channel.h
@@ -1,10 +1,9 @@
 #ifndef ANDROID_DVR_BUFFERHUBD_PRODUCER_QUEUE_CHANNEL_H_
 #define ANDROID_DVR_BUFFERHUBD_PRODUCER_QUEUE_CHANNEL_H_
 
-#include "buffer_hub.h"
-
 #include <pdx/status.h>
 #include <private/dvr/bufferhub_rpc.h>
+#include <private/dvr/buffer_hub.h>
 
 namespace android {
 namespace dvr {
@@ -38,8 +37,12 @@
                                  uint32_t format, uint64_t usage,
                                  size_t buffer_count);
 
-  // Detach a BufferHubProducer indicated by |slot|. Note that the buffer must
-  // be in Gain'ed state for the producer queue to detach.
+  // Inserts a BufferProducer into the queue. Note that the buffer must be in
+  // Gain'ed state for the operation to succeed.
+  pdx::Status<size_t> OnProducerQueueInsertBuffer(pdx::Message& message, int buffer_cid);
+
+  // Removes a BufferProducer indicated by |slot|. Note that the buffer must be
+  // in Gain'ed state for the operation to succeed.
   pdx::Status<void> OnProducerQueueRemoveBuffer(pdx::Message& message,
                                                 size_t slot);
 
diff --git a/services/vr/bufferhubd/producer_channel.cpp b/services/vr/bufferhubd/producer_channel.cpp
index b6977aa..0b5257d 100644
--- a/services/vr/bufferhubd/producer_channel.cpp
+++ b/services/vr/bufferhubd/producer_channel.cpp
@@ -1,19 +1,18 @@
-#include "producer_channel.h"
-
-#include <log/log.h>
-#include <sync/sync.h>
 #include <sys/epoll.h>
 #include <sys/eventfd.h>
 #include <sys/poll.h>
-#include <utils/Trace.h>
 
 #include <algorithm>
 #include <atomic>
 #include <thread>
 
+#include <log/log.h>
+#include <private/dvr/buffer_channel.h>
 #include <private/dvr/bufferhub_rpc.h>
-#include "consumer_channel.h"
-#include "detached_buffer_channel.h"
+#include <private/dvr/consumer_channel.h>
+#include <private/dvr/producer_channel.h>
+#include <sync/sync.h>
+#include <utils/Trace.h>
 
 using android::pdx::BorrowedHandle;
 using android::pdx::ErrorStatus;
@@ -27,14 +26,6 @@
 namespace android {
 namespace dvr {
 
-namespace {
-
-static inline uint64_t FindNextClearedBit(uint64_t bits) {
-  return ~bits - (~bits & (~bits - 1));
-}
-
-}  // namespace
-
 ProducerChannel::ProducerChannel(BufferHubService* service, int buffer_id,
                                  int channel_id, IonBuffer buffer,
                                  IonBuffer metadata_buffer,
@@ -105,8 +96,7 @@
   // and also initialize the value to zero.
   buffer_state_ =
       new (&metadata_header_->buffer_state) std::atomic<uint64_t>(0);
-  fence_state_ =
-      new (&metadata_header_->fence_state) std::atomic<uint64_t>(0);
+  fence_state_ = new (&metadata_header_->fence_state) std::atomic<uint64_t>(0);
 
   acquire_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC));
   release_fence_fd_.Reset(epoll_create1(EPOLL_CLOEXEC));
@@ -236,9 +226,13 @@
 
 BufferDescription<BorrowedHandle> ProducerChannel::GetBuffer(
     uint64_t buffer_state_bit) {
-  return {
-      buffer_,          metadata_buffer_,           buffer_id(),
-      buffer_state_bit, acquire_fence_fd_.Borrow(), release_fence_fd_.Borrow()};
+  return {buffer_,
+          metadata_buffer_,
+          buffer_id(),
+          channel_id(),
+          buffer_state_bit,
+          acquire_fence_fd_.Borrow(),
+          release_fence_fd_.Borrow()};
 }
 
 Status<BufferDescription<BorrowedHandle>> ProducerChannel::OnGetBuffer(
@@ -266,7 +260,7 @@
 
   // Try find the next consumer state bit which has not been claimed by any
   // consumer yet.
-  uint64_t consumer_state_bit = FindNextClearedBit(
+  uint64_t consumer_state_bit = BufferHubDefs::FindNextClearedBit(
       active_consumer_bit_mask_ | orphaned_consumer_bit_mask_ |
       BufferHubDefs::kProducerStateBit);
   if (consumer_state_bit == 0ULL) {
@@ -305,8 +299,8 @@
   return CreateConsumer(message);
 }
 
-Status<void> ProducerChannel::OnProducerPost(
-    Message&, LocalFence acquire_fence) {
+Status<void> ProducerChannel::OnProducerPost(Message&,
+                                             LocalFence acquire_fence) {
   ATRACE_NAME("ProducerChannel::OnProducerPost");
   ALOGD_IF(TRACE, "ProducerChannel::OnProducerPost: buffer_id=%d", buffer_id());
   if (!producer_owns_) {
@@ -320,9 +314,9 @@
   int ret = epoll_ctl(release_fence_fd_.Get(), EPOLL_CTL_MOD,
                       dummy_fence_fd_.Get(), &event);
   ALOGE_IF(ret < 0,
-      "ProducerChannel::OnProducerPost: Failed to modify the shared "
-      "release fence to include the dummy fence: %s",
-      strerror(errno));
+           "ProducerChannel::OnProducerPost: Failed to modify the shared "
+           "release fence to include the dummy fence: %s",
+           strerror(errno));
 
   eventfd_t dummy_fence_count = 0ULL;
   if (eventfd_read(dummy_fence_fd_.Get(), &dummy_fence_count) < 0) {
@@ -415,10 +409,9 @@
     return ErrorStatus(-ret);
   };
 
-  std::unique_ptr<DetachedBufferChannel> channel =
-      DetachedBufferChannel::Create(
-          service(), buffer_id(), channel_id, std::move(buffer_),
-          std::move(metadata_buffer_), user_metadata_size_);
+  std::unique_ptr<BufferChannel> channel = BufferChannel::Create(
+      service(), buffer_id(), channel_id, std::move(buffer_),
+      std::move(metadata_buffer_), user_metadata_size_);
   if (!channel) {
     ALOGE("ProducerChannel::OnProducerDetach: Invalid buffer.");
     return ErrorStatus(EINVAL);
@@ -480,7 +473,7 @@
     }
   }
 
-  OnConsumerIgnored();
+  DecrementPendingConsumers();
   if (pending_consumers_ == 0) {
     // Clear the producer bit atomically to transit into released state. This
     // has to done by BufferHub as it requries synchronization among all
@@ -513,21 +506,22 @@
   return {};
 }
 
-void ProducerChannel::OnConsumerIgnored() {
+void ProducerChannel::DecrementPendingConsumers() {
   if (pending_consumers_ == 0) {
-    ALOGE("ProducerChannel::OnConsumerIgnored: no pending consumer.");
+    ALOGE("ProducerChannel::DecrementPendingConsumers: no pending consumer.");
     return;
   }
 
   --pending_consumers_;
   ALOGD_IF(TRACE,
-           "ProducerChannel::OnConsumerIgnored: buffer_id=%d %d consumers left",
+           "ProducerChannel::DecrementPendingConsumers: buffer_id=%d %d "
+           "consumers left",
            buffer_id(), pending_consumers_);
 }
 
 void ProducerChannel::OnConsumerOrphaned(ConsumerChannel* channel) {
   // Ignore the orphaned consumer.
-  OnConsumerIgnored();
+  DecrementPendingConsumers();
 
   const uint64_t consumer_state_bit = channel->consumer_state_bit();
   ALOGE_IF(orphaned_consumer_bit_mask_ & consumer_state_bit,
diff --git a/services/vr/bufferhubd/producer_queue_channel.cpp b/services/vr/bufferhubd/producer_queue_channel.cpp
index c0c48c2..6b5027c 100644
--- a/services/vr/bufferhubd/producer_queue_channel.cpp
+++ b/services/vr/bufferhubd/producer_queue_channel.cpp
@@ -1,9 +1,8 @@
-#include "producer_queue_channel.h"
-
 #include <inttypes.h>
 
-#include "consumer_queue_channel.h"
-#include "producer_channel.h"
+#include <private/dvr/consumer_queue_channel.h>
+#include <private/dvr/producer_channel.h>
+#include <private/dvr/producer_queue_channel.h>
 
 using android::pdx::ErrorStatus;
 using android::pdx::Message;
@@ -76,6 +75,11 @@
           message);
       return true;
 
+    case BufferHubRPC::ProducerQueueInsertBuffer::Opcode:
+      DispatchRemoteMethod<BufferHubRPC::ProducerQueueInsertBuffer>(
+          *this, &ProducerQueueChannel::OnProducerQueueInsertBuffer, message);
+      return true;
+
     case BufferHubRPC::ProducerQueueRemoveBuffer::Opcode:
       DispatchRemoteMethod<BufferHubRPC::ProducerQueueRemoveBuffer>(
           *this, &ProducerQueueChannel::OnProducerQueueRemoveBuffer, message);
@@ -278,6 +282,81 @@
   return {{std::move(buffer_handle), slot}};
 }
 
+Status<size_t> ProducerQueueChannel::OnProducerQueueInsertBuffer(
+    pdx::Message& message, int buffer_cid) {
+  ATRACE_NAME("ProducerQueueChannel::InsertBuffer");
+  ALOGD_IF(TRACE,
+           "ProducerQueueChannel::InsertBuffer: channel_id=%d, buffer_cid=%d",
+           channel_id(), buffer_cid);
+
+  if (capacity_ >= BufferHubRPC::kMaxQueueCapacity) {
+    ALOGE("ProducerQueueChannel::InsertBuffer: reaches kMaxQueueCapacity.");
+    return ErrorStatus(E2BIG);
+  }
+  auto producer_channel = std::static_pointer_cast<ProducerChannel>(
+      service()->GetChannel(buffer_cid));
+  if (producer_channel == nullptr ||
+      producer_channel->channel_type() != BufferHubChannel::kProducerType) {
+    // Rejects the request if the requested buffer channel is invalid and/or
+    // it's not a ProducerChannel.
+    ALOGE(
+        "ProducerQueueChannel::InsertBuffer: Invalid buffer_cid=%d, "
+        "producer_buffer=0x%p, channel_type=%d.",
+        buffer_cid, producer_channel.get(),
+        producer_channel == nullptr ? -1 : producer_channel->channel_type());
+    return ErrorStatus(EINVAL);
+  }
+  if (producer_channel->GetActiveProcessId() != message.GetProcessId()) {
+    // Rejects the request if the requested buffer channel is not currently
+    // connected to the caller this is IPC request. This effectively prevents
+    // fake buffer_cid from being injected.
+    ALOGE(
+        "ProducerQueueChannel::InsertBuffer: Requested buffer channel "
+        "(buffer_cid=%d) is not connected to the calling process (pid=%d). "
+        "It's connected to a different process (pid=%d).",
+        buffer_cid, message.GetProcessId(),
+        producer_channel->GetActiveProcessId());
+    return ErrorStatus(EINVAL);
+  }
+  uint64_t buffer_state = producer_channel->buffer_state();
+  if (!BufferHubDefs::IsBufferGained(buffer_state)) {
+    // Rejects the request if the requested buffer is not in Gained state.
+    ALOGE(
+        "ProducerQueueChannel::InsertBuffer: The buffer (cid=%d, "
+        "state=0x%" PRIx64 ") is not in gained state.",
+        buffer_cid, buffer_state);
+    return ErrorStatus(EINVAL);
+  }
+
+  // Register the to-be-inserted buffer's channel_id into the first empty
+  // buffer slot.
+  size_t slot = 0;
+  for (; slot < BufferHubRPC::kMaxQueueCapacity; slot++) {
+    if (buffers_[slot].expired())
+      break;
+  }
+  if (slot == BufferHubRPC::kMaxQueueCapacity) {
+    ALOGE(
+        "ProducerQueueChannel::AllocateBuffer: Cannot find empty slot for new "
+        "buffer allocation.");
+    return ErrorStatus(E2BIG);
+  }
+
+  buffers_[slot] = producer_channel;
+  capacity_++;
+
+  // Notify each consumer channel about the new buffer.
+  for (auto* consumer_channel : consumer_channels_) {
+    ALOGD(
+        "ProducerQueueChannel::AllocateBuffer: Notified consumer with new "
+        "buffer, buffer_cid=%d",
+        buffer_cid);
+    consumer_channel->RegisterNewBuffer(producer_channel, slot);
+  }
+
+  return {slot};
+}
+
 Status<void> ProducerQueueChannel::OnProducerQueueRemoveBuffer(
     Message& /*message*/, size_t slot) {
   if (buffers_[slot].expired()) {
diff --git a/services/vr/bufferhubd/tests/Android.bp b/services/vr/bufferhubd/tests/Android.bp
new file mode 100644
index 0000000..4d1d43f
--- /dev/null
+++ b/services/vr/bufferhubd/tests/Android.bp
@@ -0,0 +1,16 @@
+cc_test {
+    name: "buffer_hub_binder_service-test",
+    srcs: ["buffer_hub_binder_service-test.cpp"],
+    cflags: [
+        "-DLOG_TAG=\"buffer_hub_binder_service-test\"",
+        "-DTRACE=0",
+        "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
+    ],
+    static_libs: ["libbufferhubd"],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "liblog",
+        "libutils",
+    ],
+}
\ No newline at end of file
diff --git a/services/vr/bufferhubd/tests/buffer_hub_binder_service-test.cpp b/services/vr/bufferhubd/tests/buffer_hub_binder_service-test.cpp
new file mode 100644
index 0000000..e3f2825
--- /dev/null
+++ b/services/vr/bufferhubd/tests/buffer_hub_binder_service-test.cpp
@@ -0,0 +1,22 @@
+#include <private/dvr/buffer_hub_binder.h>
+
+#include <gtest/gtest.h>
+
+namespace android {
+namespace dvr {
+
+namespace {
+
+class BufferHubBinderServiceTest : public ::testing::Test {
+  // Add setup and teardown if necessary
+};
+
+TEST_F(BufferHubBinderServiceTest, TestInitialize) {
+  // Test if start binder server returns OK
+  EXPECT_EQ(BufferHubBinderService::start(), OK);
+}
+
+}  // namespace
+
+}  // namespace dvr
+}  // namespace android
\ No newline at end of file
diff --git a/services/vr/hardware_composer/Android.bp b/services/vr/hardware_composer/Android.bp
index 90edf69..003775b 100644
--- a/services/vr/hardware_composer/Android.bp
+++ b/services/vr/hardware_composer/Android.bp
@@ -39,6 +39,10 @@
     "android.hardware.graphics.composer@2.1-hal",
   ],
 
+  export_static_lib_headers: [
+    "libdisplay",
+  ],
+
   export_shared_lib_headers: [
     "android.frameworks.vr.composer@1.0",
     "android.hardware.graphics.composer@2.1",
@@ -48,6 +52,7 @@
 
   cflags: [
     "-DLOG_TAG=\"vr_hwc\"",
+    "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
     "-Wall",
     "-Werror",
     // mVrClient unused in vr_composer_client.cpp
@@ -115,6 +120,7 @@
 
 cc_binary {
   name: "vr_hwc",
+  vintf_fragments: ["manifest_vr_hwc.xml"],
   srcs: [
     "vr_hardware_composer_service.cpp"
   ],
diff --git a/services/vr/hardware_composer/impl/vr_hwc.cpp b/services/vr/hardware_composer/impl/vr_hwc.cpp
index 4af47d2..417460c 100644
--- a/services/vr/hardware_composer/impl/vr_hwc.cpp
+++ b/services/vr/hardware_composer/impl/vr_hwc.cpp
@@ -16,9 +16,11 @@
 #include "impl/vr_hwc.h"
 
 #include "android-base/stringprintf.h"
+#include <binder/IServiceManager.h>
 #include <cutils/properties.h>
 #include <private/dvr/display_client.h>
 #include <ui/Fence.h>
+#include <utils/Trace.h>
 
 #include <mutex>
 
@@ -244,29 +246,38 @@
 ////////////////////////////////////////////////////////////////////////////////
 // VrHwcClient
 
-VrHwc::VrHwc() {}
+VrHwc::VrHwc() {
+  vsync_callback_ = new VsyncCallback;
+}
 
-VrHwc::~VrHwc() {}
+VrHwc::~VrHwc() {
+  vsync_callback_->SetEventCallback(nullptr);
+}
 
 bool VrHwc::hasCapability(hwc2_capability_t /* capability */) { return false; }
 
 void VrHwc::registerEventCallback(EventCallback* callback) {
-  {
-    std::lock_guard<std::mutex> guard(mutex_);
-    event_callback_ = callback;
-    int32_t width, height;
-    GetPrimaryDisplaySize(&width, &height);
-    // Create the primary display late to avoid initialization issues between
-    // VR HWC and SurfaceFlinger.
-    displays_[kDefaultDisplayId].reset(new HwcDisplay(width, height));
-  }
+  std::unique_lock<std::mutex> lock(mutex_);
+  event_callback_ = callback;
+  int32_t width, height;
+  GetPrimaryDisplaySize(&width, &height);
+  // Create the primary display late to avoid initialization issues between
+  // VR HWC and SurfaceFlinger.
+  displays_[kDefaultDisplayId].reset(new HwcDisplay(width, height));
+
+  // Surface flinger will make calls back into vr_hwc when it receives the
+  // onHotplug() call, so it's important to release mutex_ here.
+  lock.unlock();
   event_callback_->onHotplug(kDefaultDisplayId,
                              IComposerCallback::Connection::CONNECTED);
+  lock.lock();
+  UpdateVsyncCallbackEnabledLocked();
 }
 
 void VrHwc::unregisterEventCallback() {
   std::lock_guard<std::mutex> guard(mutex_);
   event_callback_ = nullptr;
+  UpdateVsyncCallbackEnabledLocked();
 }
 
 uint32_t VrHwc::getMaxVirtualDisplayCount() { return 1; }
@@ -321,10 +332,14 @@
   return Error::NONE;
 }
 
-Error VrHwc::getClientTargetSupport(Display /* display */, uint32_t /* width */,
+Error VrHwc::getClientTargetSupport(Display display, uint32_t /* width */,
                                     uint32_t /* height */,
                                     PixelFormat /* format */,
                                     Dataspace /* dataspace */) {
+  std::lock_guard<std::mutex> guard(mutex_);
+  if (!FindDisplay(display))
+    return Error::BAD_DISPLAY;
+
   return Error::NONE;
 }
 
@@ -455,16 +470,37 @@
   if (!display_ptr)
     return Error::BAD_DISPLAY;
 
+  if (mode < ColorMode::NATIVE || mode > ColorMode::DISPLAY_P3)
+    return Error::BAD_PARAMETER;
+
   display_ptr->set_color_mode(mode);
   return Error::NONE;
 }
 
 Error VrHwc::setPowerMode(Display display, IComposerClient::PowerMode mode) {
+  bool dozeSupported = false;
+
+  Error dozeSupportError = getDozeSupport(display, &dozeSupported);
+
+  if (dozeSupportError != Error::NONE)
+    return dozeSupportError;
+
   std::lock_guard<std::mutex> guard(mutex_);
   auto display_ptr = FindDisplay(display);
   if (!display_ptr)
     return Error::BAD_DISPLAY;
 
+  if (mode < IComposerClient::PowerMode::OFF ||
+      mode > IComposerClient::PowerMode::DOZE_SUSPEND) {
+    return Error::BAD_PARAMETER;
+  }
+
+  if (!dozeSupported &&
+      (mode == IComposerClient::PowerMode::DOZE ||
+       mode == IComposerClient::PowerMode::DOZE_SUSPEND)) {
+    return Error::UNSUPPORTED;
+  }
+
   display_ptr->set_power_mode(mode);
   return Error::NONE;
 }
@@ -475,8 +511,45 @@
   if (!display_ptr)
     return Error::BAD_DISPLAY;
 
-  display_ptr->set_vsync_enabled(enabled);
-  return Error::NONE;
+  if (enabled != IComposerClient::Vsync::ENABLE &&
+      enabled != IComposerClient::Vsync::DISABLE) {
+    return Error::BAD_PARAMETER;
+  }
+
+  Error set_vsync_result = Error::NONE;
+  if (display == kDefaultDisplayId) {
+    sp<IVsyncService> vsync_service = interface_cast<IVsyncService>(
+        defaultServiceManager()->getService(
+            String16(IVsyncService::GetServiceName())));
+    if (vsync_service == nullptr) {
+      ALOGE("Failed to get vsync service");
+      return Error::NO_RESOURCES;
+    }
+
+    if (enabled == IComposerClient::Vsync::ENABLE) {
+      ALOGI("Enable vsync");
+      display_ptr->set_vsync_enabled(true);
+      status_t result = vsync_service->registerCallback(vsync_callback_);
+      if (result != OK) {
+        ALOGE("%s service registerCallback() failed: %s (%d)",
+            IVsyncService::GetServiceName(), strerror(-result), result);
+        set_vsync_result = Error::NO_RESOURCES;
+      }
+    } else if (enabled == IComposerClient::Vsync::DISABLE) {
+      ALOGI("Disable vsync");
+      display_ptr->set_vsync_enabled(false);
+      status_t result = vsync_service->unregisterCallback(vsync_callback_);
+      if (result != OK) {
+        ALOGE("%s service unregisterCallback() failed: %s (%d)",
+            IVsyncService::GetServiceName(), strerror(-result), result);
+        set_vsync_result = Error::NO_RESOURCES;
+      }
+    }
+
+    UpdateVsyncCallbackEnabledLocked();
+  }
+
+  return set_vsync_result;
 }
 
 Error VrHwc::setColorTransform(Display display, const float* matrix,
@@ -559,7 +632,8 @@
   frame.display_height = display_ptr->height();
   frame.active_config = display_ptr->active_config();
   frame.power_mode = display_ptr->power_mode();
-  frame.vsync_enabled = display_ptr->vsync_enabled();
+  frame.vsync_enabled = display_ptr->vsync_enabled() ?
+      IComposerClient::Vsync::ENABLE : IComposerClient::Vsync::DISABLE;
   frame.color_transform_hint = display_ptr->color_transform_hint();
   frame.color_mode = display_ptr->color_mode();
   memcpy(frame.color_transform, display_ptr->color_transform(),
@@ -911,6 +985,15 @@
   return iter == displays_.end() ? nullptr : iter->second.get();
 }
 
+void VrHwc::UpdateVsyncCallbackEnabledLocked() {
+  auto primary_display = FindDisplay(kDefaultDisplayId);
+  LOG_ALWAYS_FATAL_IF(event_callback_ != nullptr && primary_display == nullptr,
+      "Should have created the primary display by now");
+  bool send_vsync =
+      event_callback_ != nullptr && primary_display->vsync_enabled();
+  vsync_callback_->SetEventCallback(send_vsync ? event_callback_ : nullptr);
+}
+
 void HwcLayer::dumpDebugInfo(std::string* result) const {
   if (!result) {
     return;
@@ -928,5 +1011,18 @@
       buffer_metadata.layerCount, buffer_metadata.format);
 }
 
+status_t VrHwc::VsyncCallback::onVsync(int64_t vsync_timestamp) {
+  ATRACE_NAME("vr_hwc onVsync");
+  std::lock_guard<std::mutex> guard(mutex_);
+  if (callback_ != nullptr)
+    callback_->onVsync(kDefaultDisplayId, vsync_timestamp);
+  return NO_ERROR;
+}
+
+void VrHwc::VsyncCallback::SetEventCallback(EventCallback* callback) {
+  std::lock_guard<std::mutex> guard(mutex_);
+  callback_ = callback;
+}
+
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/hardware_composer/impl/vr_hwc.h b/services/vr/hardware_composer/impl/vr_hwc.h
index 85e587a..f9872b2 100644
--- a/services/vr/hardware_composer/impl/vr_hwc.h
+++ b/services/vr/hardware_composer/impl/vr_hwc.h
@@ -20,6 +20,7 @@
 #include <android/frameworks/vr/composer/1.0/IVrComposerClient.h>
 #include <android/hardware/graphics/composer/2.1/IComposer.h>
 #include <composer-hal/2.1/ComposerHal.h>
+#include <private/dvr/vsync_service.h>
 #include <ui/Fence.h>
 #include <ui/GraphicBuffer.h>
 #include <utils/StrongPointer.h>
@@ -156,10 +157,8 @@
   IComposerClient::PowerMode power_mode() const { return power_mode_; }
   void set_power_mode(IComposerClient::PowerMode mode) { power_mode_ = mode; }
 
-  IComposerClient::Vsync vsync_enabled() const { return vsync_enabled_; }
-  void set_vsync_enabled(IComposerClient::Vsync vsync) {
-    vsync_enabled_ = vsync;
-  }
+  bool vsync_enabled() const { return vsync_enabled_; }
+  void set_vsync_enabled(bool vsync) {vsync_enabled_ = vsync;}
 
   const float* color_transform() const { return color_transform_; }
   int32_t color_transform_hint() const { return color_transform_hint_; }
@@ -187,7 +186,7 @@
   Config active_config_;
   ColorMode color_mode_;
   IComposerClient::PowerMode power_mode_;
-  IComposerClient::Vsync vsync_enabled_;
+  bool vsync_enabled_ = false;
   float color_transform_[16];
   int32_t color_transform_hint_;
 
@@ -299,8 +298,23 @@
   void UnregisterObserver(Observer* observer) override;
 
  private:
+  class VsyncCallback : public BnVsyncCallback {
+   public:
+    status_t onVsync(int64_t vsync_timestamp) override;
+    void SetEventCallback(EventCallback* callback);
+   private:
+    std::mutex mutex_;
+    EventCallback* callback_;
+  };
+
   HwcDisplay* FindDisplay(Display display);
 
+  // Re-evaluate whether or not we should start making onVsync() callbacks to
+  // the client. We need enableCallback(true) to have been called, and
+  // setVsyncEnabled() to have been called for the primary display. The caller
+  // must have mutex_ locked already.
+  void UpdateVsyncCallbackEnabledLocked();
+
   wp<VrComposerClient> client_;
 
   // Guard access to internal state from binder threads.
@@ -312,6 +326,8 @@
   EventCallback* event_callback_ = nullptr;
   Observer* observer_ = nullptr;
 
+  sp<VsyncCallback> vsync_callback_;
+
   VrHwc(const VrHwc&) = delete;
   void operator=(const VrHwc&) = delete;
 };
diff --git a/services/vr/hardware_composer/manifest_vr_hwc.xml b/services/vr/hardware_composer/manifest_vr_hwc.xml
new file mode 100644
index 0000000..1068cac
--- /dev/null
+++ b/services/vr/hardware_composer/manifest_vr_hwc.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="framework">
+    <hal>
+      <name>android.hardware.graphics.composer</name>
+      <transport>hwbinder</transport>
+      <version>2.1</version>
+      <interface>
+          <name>IComposer</name>
+          <instance>vr</instance>
+      </interface>
+    </hal>
+</manifest>
diff --git a/services/vr/performanced/cpu_set.cpp b/services/vr/performanced/cpu_set.cpp
index 1a7264c..d940b79 100644
--- a/services/vr/performanced/cpu_set.cpp
+++ b/services/vr/performanced/cpu_set.cpp
@@ -106,7 +106,7 @@
   return sets;
 }
 
-std::string CpuSetManager::DumpState() const {
+void CpuSetManager::DumpState(std::ostringstream& stream) const {
   size_t max_path = 0;
   std::vector<CpuSet*> sets;
 
@@ -119,8 +119,6 @@
     return a->path() < b->path();
   });
 
-  std::ostringstream stream;
-
   stream << std::left;
   stream << std::setw(max_path) << "Path";
   stream << " ";
@@ -146,8 +144,6 @@
     stream << std::setw(6) << set->GetTasks().size();
     stream << std::endl;
   }
-
-  return stream.str();
 }
 
 void CpuSetManager::MoveUnboundTasks(const std::string& target_set) {
diff --git a/services/vr/performanced/cpu_set.h b/services/vr/performanced/cpu_set.h
index 6879272..4c25e9e 100644
--- a/services/vr/performanced/cpu_set.h
+++ b/services/vr/performanced/cpu_set.h
@@ -5,6 +5,7 @@
 
 #include <memory>
 #include <mutex>
+#include <sstream>
 #include <string>
 #include <unordered_map>
 #include <vector>
@@ -83,7 +84,7 @@
   // to shield the system from interference from unbound kernel threads.
   void MoveUnboundTasks(const std::string& target_set);
 
-  std::string DumpState() const;
+  void DumpState(std::ostringstream& stream) const;
 
   operator bool() const { return root_set_ != nullptr; }
 
diff --git a/services/vr/performanced/performance_service.cpp b/services/vr/performanced/performance_service.cpp
index 4c26671..73dcf76 100644
--- a/services/vr/performanced/performance_service.cpp
+++ b/services/vr/performanced/performance_service.cpp
@@ -1,5 +1,7 @@
 #include "performance_service.h"
 
+#include <sstream>
+
 #include <sched.h>
 #include <sys/prctl.h>
 #include <unistd.h>
@@ -31,6 +33,10 @@
 
 const char kRootCpuSet[] = "/";
 
+const char kVrAppRenderPolicy[] = "vr:app:render";
+
+const bool kAllowAppsToRequestVrAppRenderPolicy = false;
+
 constexpr unsigned long kTimerSlackForegroundNs = 50000;
 constexpr unsigned long kTimerSlackBackgroundNs = 40000000;
 
@@ -124,9 +130,6 @@
   // TODO(eieio): Replace this witha device-specific config file. This is just a
   // hack for now to put some form of permission logic in place while a longer
   // term solution is developed.
-  using AllowRootSystem =
-      CheckAnd<SameProcess,
-               CheckOr<UserId<AID_ROOT, AID_SYSTEM>, GroupId<AID_SYSTEM>>>;
   using AllowRootSystemGraphics =
       CheckAnd<SameProcess, CheckOr<UserId<AID_ROOT, AID_SYSTEM, AID_GRAPHICS>,
                                     GroupId<AID_SYSTEM, AID_GRAPHICS>>>;
@@ -136,6 +139,17 @@
   using AllowRootSystemTrusted =
       CheckOr<Trusted, UserId<AID_ROOT, AID_SYSTEM>, GroupId<AID_SYSTEM>>;
 
+  auto vr_app_render_permission_check = [](
+      const pdx::Message& sender, const Task& task) {
+          // For vr:app:render, in addition to system/root apps and VrCore, we
+          // also allow apps to request vr:app:render if
+          // kAllowAppsToRequestVrAppRenderPolicy == true, but not for other
+          // apps, only for themselves.
+          return (task && task.thread_group_id() == sender.GetProcessId() &&
+                  kAllowAppsToRequestVrAppRenderPolicy)
+              || AllowRootSystemTrusted::Check(sender, task);
+      };
+
   partition_permission_check_ = AllowRootSystemTrusted::Check;
 
   // Setup the scheduler classes.
@@ -170,28 +184,28 @@
        {.timer_slack = kTimerSlackForegroundNs,
         .scheduler_policy = SCHED_FIFO | SCHED_RESET_ON_FORK,
         .priority = fifo_low,
-        .permission_check = AllowRootSystem::Check}},
+        .permission_check = AllowRootSystemTrusted::Check}},
       {"sensors:low",
        {.timer_slack = kTimerSlackForegroundNs,
         .scheduler_policy = SCHED_FIFO | SCHED_RESET_ON_FORK,
         .priority = fifo_low,
-        .permission_check = AllowRootSystem::Check}},
+        .permission_check = AllowRootSystemTrusted::Check}},
       {"sensors:high",
        {.timer_slack = kTimerSlackForegroundNs,
         .scheduler_policy = SCHED_FIFO | SCHED_RESET_ON_FORK,
         .priority = fifo_low + 1,
-        .permission_check = AllowRootSystem::Check}},
+        .permission_check = AllowRootSystemTrusted::Check}},
       {"vr:system:arp",
        {.timer_slack = kTimerSlackForegroundNs,
         .scheduler_policy = SCHED_FIFO | SCHED_RESET_ON_FORK,
         .priority = fifo_medium + 2,
         .permission_check = AllowRootSystemTrusted::Check,
         "/system/performance"}},
-      {"vr:app:render",
+      {kVrAppRenderPolicy,
        {.timer_slack = kTimerSlackForegroundNs,
         .scheduler_policy = SCHED_FIFO | SCHED_RESET_ON_FORK,
         .priority = fifo_medium + 1,
-        .permission_check = AllowRootSystemTrusted::Check,
+        .permission_check = vr_app_render_permission_check,
         "/application/performance"}},
       {"normal",
        {.timer_slack = kTimerSlackForegroundNs,
@@ -218,7 +232,10 @@
 }
 
 std::string PerformanceService::DumpState(size_t /*max_length*/) {
-  return cpuset_.DumpState();
+  std::ostringstream stream;
+  stream << "vr_app_render_thread: " << vr_app_render_thread_ << std::endl;
+  cpuset_.DumpState(stream);
+  return stream.str();
 }
 
 Status<void> PerformanceService::OnSetSchedulerPolicy(
@@ -244,7 +261,12 @@
     // Make sure the sending process is allowed to make the requested change to
     // this task.
     if (!config.IsAllowed(message, task))
-      return ErrorStatus(EINVAL);
+      return ErrorStatus(EPERM);
+
+    if (scheduler_policy == kVrAppRenderPolicy) {
+      // We only allow one vr:app:render thread at a time
+      SetVrAppRenderThread(task_id);
+    }
 
     // Get the thread group's cpu set. Policies that do not specify a cpuset
     // should default to this cpuset.
@@ -302,14 +324,16 @@
 Status<void> PerformanceService::OnSetCpuPartition(
     Message& message, pid_t task_id, const std::string& partition) {
   Task task(task_id);
-  if (!task || task.thread_group_id() != message.GetProcessId())
+  if (!task)
     return ErrorStatus(EINVAL);
+  if (task.thread_group_id() != message.GetProcessId())
+    return ErrorStatus(EPERM);
 
   // Temporary permission check.
   // TODO(eieio): Replace this with a configuration file.
   if (partition_permission_check_ &&
       !partition_permission_check_(message, task)) {
-    return ErrorStatus(EINVAL);
+    return ErrorStatus(EPERM);
   }
 
   auto target_set = cpuset_.Lookup(partition);
@@ -336,7 +360,12 @@
     // Make sure the sending process is allowed to make the requested change to
     // this task.
     if (!config.IsAllowed(message, task))
-      return ErrorStatus(EINVAL);
+      return ErrorStatus(EPERM);
+
+    if (scheduler_class == kVrAppRenderPolicy) {
+      // We only allow one vr:app:render thread at a time
+      SetVrAppRenderThread(task_id);
+    }
 
     struct sched_param param;
     param.sched_priority = config.priority;
@@ -359,8 +388,10 @@
                                                           pid_t task_id) {
   // Make sure the task id is valid and belongs to the sending process.
   Task task(task_id);
-  if (!task || task.thread_group_id() != message.GetProcessId())
+  if (!task)
     return ErrorStatus(EINVAL);
+  if (task.thread_group_id() != message.GetProcessId())
+    return ErrorStatus(EPERM);
 
   return task.GetCpuSetPath();
 }
@@ -393,5 +424,38 @@
   }
 }
 
+void PerformanceService::SetVrAppRenderThread(pid_t new_vr_app_render_thread) {
+  ALOGI("SetVrAppRenderThread old=%d new=%d",
+      vr_app_render_thread_, new_vr_app_render_thread);
+
+  if (vr_app_render_thread_ >= 0 &&
+      vr_app_render_thread_ != new_vr_app_render_thread) {
+    // Restore the default scheduler policy and priority on the previous
+    // vr:app:render thread.
+    struct sched_param param;
+    param.sched_priority = 0;
+    if (sched_setscheduler(vr_app_render_thread_, SCHED_NORMAL, &param) < 0) {
+      if (errno == ESRCH) {
+        ALOGI("Failed to revert %s scheduler policy. Couldn't find thread %d."
+            " Was the app killed?", kVrAppRenderPolicy, vr_app_render_thread_);
+      } else {
+        ALOGE("Failed to revert %s scheduler policy: %s",
+            kVrAppRenderPolicy, strerror(errno));
+      }
+    }
+
+    // Restore the default timer slack on the previous vr:app:render thread.
+    prctl(PR_SET_TIMERSLACK_PID, kTimerSlackForegroundNs,
+        vr_app_render_thread_);
+  }
+
+  // We could also reset the thread's cpuset here, but the cpuset is already
+  // managed by Android. Better to let Android adjust the cpuset as the app
+  // moves to the background, rather than adjust it ourselves here, and risk
+  // stomping on the value set by Android.
+
+  vr_app_render_thread_ = new_vr_app_render_thread;
+}
+
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/performanced/performance_service.h b/services/vr/performanced/performance_service.h
index 6b519ab..fe63756 100644
--- a/services/vr/performanced/performance_service.h
+++ b/services/vr/performanced/performance_service.h
@@ -39,6 +39,14 @@
   pdx::Status<std::string> OnGetCpuPartition(pdx::Message& message,
                                              pid_t task_id);
 
+  // Set which thread gets the vr:app:render policy. Only one thread at a time
+  // is allowed to have vr:app:render. If multiple threads are allowed
+  // vr:app:render, and those threads busy loop, the system can freeze. When
+  // SetVrAppRenderThread() is called, the thread which we had previously
+  // assigned vr:app:render will have its scheduling policy reset to default
+  // values.
+  void SetVrAppRenderThread(pid_t new_vr_app_render_thread);
+
   CpuSetManager cpuset_;
 
   int sched_fifo_min_priority_;
@@ -70,6 +78,8 @@
   std::function<bool(const pdx::Message& message, const Task& task)>
       partition_permission_check_;
 
+  pid_t vr_app_render_thread_ = -1;
+
   PerformanceService(const PerformanceService&) = delete;
   void operator=(const PerformanceService&) = delete;
 };
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index fdbd969..a607a5d 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -984,7 +984,7 @@
     uint32_t icd_api_version;
     PFN_vkEnumerateInstanceVersion pfn_enumerate_instance_version =
         reinterpret_cast<PFN_vkEnumerateInstanceVersion>(
-            Hal::Device().GetInstanceProcAddr(NULL,
+            Hal::Device().GetInstanceProcAddr(nullptr,
                                               "vkEnumerateInstanceVersion"));
     if (!pfn_enumerate_instance_version) {
         icd_api_version = VK_API_VERSION_1_0;
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index 3db8a39..8601373 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -335,15 +335,15 @@
             swapchain.surface.window.get(), ti.native_frame_id_,
             &desired_present_time, &render_complete_time,
             &composition_latch_time,
-            NULL,  //&first_composition_start_time,
-            NULL,  //&last_composition_start_time,
-            NULL,  //&composition_finish_time,
+            nullptr,  //&first_composition_start_time,
+            nullptr,  //&last_composition_start_time,
+            nullptr,  //&composition_finish_time,
             // TODO(ianelliott): Maybe ask if this one is
             // supported, at startup time (since it may not be
             // supported):
             &actual_present_time,
-            NULL,  //&dequeue_ready_time,
-            NULL /*&reads_done_time*/);
+            nullptr,  //&dequeue_ready_time,
+            nullptr /*&reads_done_time*/);
 
         if (ret != android::NO_ERROR) {
             continue;
@@ -569,21 +569,17 @@
     switch (native_format) {
         case HAL_PIXEL_FORMAT_RGBA_8888:
         case HAL_PIXEL_FORMAT_RGB_565:
+        case HAL_PIXEL_FORMAT_RGBA_FP16:
             format_supported = true;
             break;
         default:
             break;
     }
 
-    // USAGE_CPU_READ_MASK 0xFUL
-    // USAGE_CPU_WRITE_MASK (0xFUL << 4)
-    // The currently used bits are as below:
-    // USAGE_CPU_READ_RARELY = 2UL
-    // USAGE_CPU_READ_OFTEN = 3UL
-    // USAGE_CPU_WRITE_RARELY = (2UL << 4)
-    // USAGE_CPU_WRITE_OFTEN = (3UL << 4)
-    *supported = static_cast<VkBool32>(format_supported ||
-                                       (surface->consumer_usage & 0xFFUL) == 0);
+    *supported = static_cast<VkBool32>(
+        format_supported || (surface->consumer_usage &
+                             (AHARDWAREBUFFER_USAGE_CPU_READ_MASK |
+                              AHARDWAREBUFFER_USAGE_CPU_WRITE_MASK)) == 0);
 
     return VK_SUCCESS;
 }
@@ -700,6 +696,10 @@
          VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT},
         {VK_FORMAT_R8G8B8A8_SRGB,
          VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT},
+        {VK_FORMAT_R16G16B16A16_SFLOAT,
+         VK_COLOR_SPACE_EXTENDED_SRGB_LINEAR_EXT},
+        {VK_FORMAT_R16G16B16A16_SFLOAT,
+         VK_COLOR_SPACE_EXTENDED_SRGB_NONLINEAR_EXT},
     };
     const uint32_t kNumWideColorFormats =
         sizeof(kWideColorFormats) / sizeof(kWideColorFormats[0]);
diff --git a/vulkan/vkjson/Android.bp b/vulkan/vkjson/Android.bp
index e387165..7fbe315 100644
--- a/vulkan/vkjson/Android.bp
+++ b/vulkan/vkjson/Android.bp
@@ -9,7 +9,6 @@
         "-Werror",
     ],
     cppflags: [
-        "-std=c++11",
         "-Wno-sign-compare",
     ],
     export_include_dirs: [
@@ -35,7 +34,6 @@
         "-Werror",
     ],
     cppflags: [
-        "-std=c++11",
         "-Wno-sign-compare",
     ],
     export_include_dirs: [
diff --git a/vulkan/vkjson/vkjson.cc b/vulkan/vkjson/vkjson.cc
index 6200383..f841862 100644
--- a/vulkan/vkjson/vkjson.cc
+++ b/vulkan/vkjson/vkjson.cc
@@ -544,6 +544,31 @@
 
 template <typename Visitor>
 inline bool Iterate(Visitor* visitor,
+                    VkJsonExtDriverProperties* properties) {
+  return visitor->Visit("driverPropertiesKHR",
+                        &properties->driver_properties_khr);
+}
+
+template <typename Visitor>
+inline bool Iterate(Visitor* visitor,
+                    VkPhysicalDeviceDriverPropertiesKHR* properties) {
+  return visitor->Visit("driverID", &properties->driverID) &&
+         visitor->Visit("driverName", &properties->driverName) &&
+         visitor->Visit("driverInfo", &properties->driverInfo) &&
+         visitor->Visit("conformanceVersion", &properties->conformanceVersion);
+}
+
+template <typename Visitor>
+inline bool Iterate(Visitor* visitor,
+                    VkConformanceVersionKHR* version) {
+  return visitor->Visit("major", &version->major) &&
+         visitor->Visit("minor", &version->minor) &&
+         visitor->Visit("subminor", &version->subminor) &&
+         visitor->Visit("patch", &version->patch);
+}
+
+template <typename Visitor>
+inline bool Iterate(Visitor* visitor,
                     VkJsonExtVariablePointerFeatures* features) {
   return visitor->Visit("variablePointerFeaturesKHR",
                         &features->variable_pointer_features_khr);
@@ -769,13 +794,19 @@
     case VK_API_VERSION_1_0:
       ret &= visitor->Visit("properties", &device->properties) &&
              visitor->Visit("features", &device->features) &&
-             visitor->Visit("VK_KHR_variable_pointers",
-                            &device->ext_variable_pointer_features) &&
              visitor->Visit("memory", &device->memory) &&
              visitor->Visit("queues", &device->queues) &&
              visitor->Visit("extensions", &device->extensions) &&
              visitor->Visit("layers", &device->layers) &&
              visitor->Visit("formats", &device->formats);
+      if (device->ext_driver_properties.reported) {
+        ret &= visitor->Visit("VK_KHR_driver_properties",
+                            &device->ext_driver_properties);
+      }
+      if (device->ext_variable_pointer_features.reported) {
+        ret &= visitor->Visit("VK_KHR_variable_pointers",
+                            &device->ext_variable_pointer_features);
+      }
   }
   return ret;
 }
diff --git a/vulkan/vkjson/vkjson.h b/vulkan/vkjson/vkjson.h
index 5e8428a..3373f19 100644
--- a/vulkan/vkjson/vkjson.h
+++ b/vulkan/vkjson/vkjson.h
@@ -46,11 +46,23 @@
   std::vector<VkExtensionProperties> extensions;
 };
 
+struct VkJsonExtDriverProperties {
+  VkJsonExtDriverProperties() {
+    reported = false;
+    memset(&driver_properties_khr, 0,
+           sizeof(VkPhysicalDeviceDriverPropertiesKHR));
+  }
+  bool reported;
+  VkPhysicalDeviceDriverPropertiesKHR driver_properties_khr;
+};
+
 struct VkJsonExtVariablePointerFeatures {
   VkJsonExtVariablePointerFeatures() {
+    reported = false;
     memset(&variable_pointer_features_khr, 0,
            sizeof(VkPhysicalDeviceVariablePointerFeaturesKHR));
   }
+  bool reported;
   VkPhysicalDeviceVariablePointerFeaturesKHR variable_pointer_features_khr;
 };
 
@@ -81,6 +93,7 @@
   }
   VkPhysicalDeviceProperties properties;
   VkPhysicalDeviceFeatures features;
+  VkJsonExtDriverProperties ext_driver_properties;
   VkJsonExtVariablePointerFeatures ext_variable_pointer_features;
   VkPhysicalDeviceMemoryProperties memory;
   std::vector<VkQueueFamilyProperties> queues;
diff --git a/vulkan/vkjson/vkjson_instance.cc b/vulkan/vkjson/vkjson_instance.cc
index db0450d..313d095 100644
--- a/vulkan/vkjson/vkjson_instance.cc
+++ b/vulkan/vkjson/vkjson_instance.cc
@@ -71,11 +71,16 @@
                              const char* const* instance_extensions) {
   VkJsonDevice device;
 
+  PFN_vkGetPhysicalDeviceProperties2KHR vkpGetPhysicalDeviceProperties2KHR =
+      nullptr;
   PFN_vkGetPhysicalDeviceFeatures2KHR vkpGetPhysicalDeviceFeatures2KHR =
       nullptr;
   if (instance != VK_NULL_HANDLE &&
       HasExtension("VK_KHR_get_physical_device_properties2",
                    instance_extension_count, instance_extensions)) {
+    vkpGetPhysicalDeviceProperties2KHR =
+        reinterpret_cast<PFN_vkGetPhysicalDeviceProperties2KHR>(
+            vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceProperties2KHR"));
     vkpGetPhysicalDeviceFeatures2KHR =
         reinterpret_cast<PFN_vkGetPhysicalDeviceFeatures2KHR>(
             vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceFeatures2KHR"));
@@ -98,15 +103,32 @@
                                      device.layers.data());
   }
 
-  vkGetPhysicalDeviceProperties(physical_device, &device.properties);
   if (HasExtension("VK_KHR_get_physical_device_properties2",
                    instance_extension_count, instance_extensions)) {
+    VkPhysicalDeviceProperties2KHR properties = {
+        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR,
+        nullptr,
+        {} // properties
+    };
+    if (HasExtension("VK_KHR_driver_properties", device.extensions)) {
+      device.ext_driver_properties.reported = true;
+      device.ext_driver_properties.driver_properties_khr.sType =
+          VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRIVER_PROPERTIES_KHR;
+      device.ext_driver_properties.driver_properties_khr.pNext =
+          properties.pNext;
+      properties.pNext =
+          &device.ext_driver_properties.driver_properties_khr;
+    }
+    vkpGetPhysicalDeviceProperties2KHR(physical_device, &properties);
+    device.properties = properties.properties;
+
     VkPhysicalDeviceFeatures2KHR features = {
         VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR,
         nullptr,
         {}  // features
     };
     if (HasExtension("VK_KHR_variable_pointers", device.extensions)) {
+      device.ext_variable_pointer_features.reported = true;
       device.ext_variable_pointer_features.variable_pointer_features_khr.sType =
           VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VARIABLE_POINTER_FEATURES_KHR;
       device.ext_variable_pointer_features.variable_pointer_features_khr.pNext =
@@ -117,6 +139,7 @@
     vkpGetPhysicalDeviceFeatures2KHR(physical_device, &features);
     device.features = features.features;
   } else {
+    vkGetPhysicalDeviceProperties(physical_device, &device.properties);
     vkGetPhysicalDeviceFeatures(physical_device, &device.features);
   }
   vkGetPhysicalDeviceMemoryProperties(physical_device, &device.memory);