diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index ce0caed..8f2dee1 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -552,17 +552,13 @@
             hidl_string instanceName = fqInstanceName.substr(n+1, std::string::npos);
             Return<sp<IBase>> interfaceRet = sm->get(fqInterfaceName, instanceName);
             if (!interfaceRet.isOk()) {
-                fprintf(stderr, "failed to get service %s: %s\n",
-                        fqInstanceName.c_str(),
-                        interfaceRet.description().c_str());
+                // ignore
                 continue;
             }
             sp<IBase> interface = interfaceRet;
             auto notifyRet = interface->notifySyspropsChanged();
             if (!notifyRet.isOk()) {
-                fprintf(stderr, "failed to notifySyspropsChanged on service %s: %s\n",
-                        fqInstanceName.c_str(),
-                        notifyRet.description().c_str());
+                // ignore
             }
         }
     });
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index e33f099..3c019ac 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -960,7 +960,7 @@
                {"ps", "-A", "-T", "-Z", "-O", "pri,nice,rtprio,sched,pcy"});
     RunCommand("LIBRANK", {"librank"}, CommandOptions::AS_ROOT);
 
-    RunCommand("HARDWARE HALS", {"lshal"});
+    RunCommand("HARDWARE HALS", {"lshal"}, CommandOptions::AS_ROOT);
 
     RunCommand("PRINTENV", {"printenv"});
     RunCommand("NETSTAT", {"netstat", "-nW"});
@@ -1161,7 +1161,7 @@
     printf("== Board\n");
     printf("========================================================\n");
 
-    ::android::sp<IDumpstateDevice> dumpstate_device(IDumpstateDevice::getService("dumpstate"));
+    ::android::sp<IDumpstateDevice> dumpstate_device(IDumpstateDevice::getService());
     if (dumpstate_device == nullptr) {
         MYLOGE("No IDumpstateDevice implementation\n");
         return;
@@ -1336,22 +1336,14 @@
     return std::string(hash_buffer);
 }
 
-static void SendShellBroadcast(const std::string& action, const std::vector<std::string>& args) {
-    std::vector<std::string> am = {
-        "/system/bin/cmd", "activity", "broadcast", "--user", "0", "-a", action};
+static void SendBroadcast(const std::string& action, const std::vector<std::string>& args) {
+    // clang-format off
+    std::vector<std::string> am = {"/system/bin/cmd", "activity", "broadcast", "--user", "0",
+                    "--receiver-foreground", "--receiver-include-background", "-a", action};
+    // clang-format on
 
     am.insert(am.end(), args.begin(), args.end());
 
-    // TODO: explicity setting Shell's component to allow broadcast to launch it.
-    // That might break other components that are listening to the bugreport notifications
-    // (com.android.internal.intent.action.BUGREPORT_STARTED and
-    // com.android.internal.intent.action.BUGREPORT_STOPED), but
-    // those should be just handled by Shell anyways.
-    // A more generic alternative would be passing the -f 0x01000000 flag (or whatever
-    // value is defined by FLAG_RECEIVER_INCLUDE_BACKGROUND), but that would reset the
-    // --receiver-foreground option
-    am.push_back("com.android.shell");
-
     RunCommand("", am,
                CommandOptions::WithTimeout(20)
                    .Log("Sending broadcast: '%s'\n")
@@ -1594,14 +1586,14 @@
                 // clang-format off
 
                 std::vector<std::string> am_args = {
-                     "--receiver-permission", "android.permission.DUMP", "--receiver-foreground",
+                     "--receiver-permission", "android.permission.DUMP",
                      "--es", "android.intent.extra.NAME", ds.name_,
                      "--ei", "android.intent.extra.ID", std::to_string(ds.id_),
                      "--ei", "android.intent.extra.PID", std::to_string(ds.pid_),
                      "--ei", "android.intent.extra.MAX", std::to_string(ds.progress_->GetMax()),
                 };
                 // clang-format on
-                SendShellBroadcast("com.android.internal.intent.action.BUGREPORT_STARTED", am_args);
+                SendBroadcast("com.android.internal.intent.action.BUGREPORT_STARTED", am_args);
             }
             if (use_control_socket) {
                 dprintf(ds.control_socket_fd_, "BEGIN:%s\n", ds.path_.c_str());
@@ -1809,7 +1801,7 @@
             // clang-format off
 
             std::vector<std::string> am_args = {
-                 "--receiver-permission", "android.permission.DUMP", "--receiver-foreground",
+                 "--receiver-permission", "android.permission.DUMP",
                  "--ei", "android.intent.extra.ID", std::to_string(ds.id_),
                  "--ei", "android.intent.extra.PID", std::to_string(ds.pid_),
                  "--ei", "android.intent.extra.MAX", std::to_string(ds.progress_->GetMax()),
@@ -1826,10 +1818,10 @@
                 am_args.push_back("--es");
                 am_args.push_back("android.intent.extra.REMOTE_BUGREPORT_HASH");
                 am_args.push_back(SHA256_file_hash(ds.path_));
-                SendShellBroadcast("com.android.internal.intent.action.REMOTE_BUGREPORT_FINISHED",
-                                   am_args);
+                SendBroadcast("com.android.internal.intent.action.REMOTE_BUGREPORT_FINISHED",
+                              am_args);
             } else {
-                SendShellBroadcast("com.android.internal.intent.action.BUGREPORT_FINISHED", am_args);
+                SendBroadcast("com.android.internal.intent.action.BUGREPORT_FINISHED", am_args);
             }
         } else {
             MYLOGE("Skipping finished broadcast because bugreport could not be generated\n");
diff --git a/cmds/installd/CacheItem.cpp b/cmds/installd/CacheItem.cpp
index d1bdded..6caf149 100644
--- a/cmds/installd/CacheItem.cpp
+++ b/cmds/installd/CacheItem.cpp
@@ -16,8 +16,9 @@
 
 #include "CacheItem.h"
 
-#include <stdint.h>
 #include <inttypes.h>
+#include <stdint.h>
+#include <sys/xattr.h>
 
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
@@ -29,12 +30,23 @@
 namespace android {
 namespace installd {
 
-CacheItem::CacheItem(const std::shared_ptr<CacheItem>& parent, FTSENT* p) : mParent(parent) {
+CacheItem::CacheItem(FTSENT* p) {
     level = p->fts_level;
     directory = S_ISDIR(p->fts_statp->st_mode);
     size = p->fts_statp->st_blocks * 512;
     modified = p->fts_statp->st_mtime;
-    mName = p->fts_path;
+
+    mParent = static_cast<CacheItem*>(p->fts_parent->fts_pointer);
+    if (mParent) {
+        atomic = mParent->atomic;
+        tombstone = mParent->tombstone;
+        mName = p->fts_name;
+        mName.insert(0, "/");
+    } else {
+        atomic = false;
+        tombstone = false;
+        mName = p->fts_path;
+    }
 }
 
 CacheItem::~CacheItem() {
@@ -46,7 +58,7 @@
 
 std::string CacheItem::buildPath() {
     std::string res = mName;
-    std::shared_ptr<CacheItem> parent = mParent;
+    CacheItem* parent = mParent;
     while (parent) {
         res.insert(0, parent->mName);
         parent = parent->mParent;
@@ -57,13 +69,47 @@
 int CacheItem::purge() {
     auto path = buildPath();
     if (directory) {
-        return delete_dir_contents_and_dir(path, true);
-    } else {
-        int res = unlink(path.c_str());
-        if (res != 0) {
-            PLOG(WARNING) << "Failed to unlink " << path;
+        FTS *fts;
+        FTSENT *p;
+        char *argv[] = { (char*) path.c_str(), nullptr };
+        if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) {
+            PLOG(WARNING) << "Failed to fts_open " << path;
+            return -1;
         }
-        return res;
+        while ((p = fts_read(fts)) != nullptr) {
+            switch (p->fts_info) {
+            case FTS_D:
+                if (p->fts_level == 0) {
+                    p->fts_number = tombstone;
+                } else {
+                    p->fts_number = p->fts_parent->fts_number
+                            | (getxattr(p->fts_path, kXattrCacheTombstone, nullptr, 0) >= 0);
+                }
+                break;
+            case FTS_F:
+                if (p->fts_parent->fts_number) {
+                    truncate(p->fts_path, 0);
+                } else {
+                    unlink(p->fts_path);
+                }
+                break;
+            case FTS_DEFAULT:
+            case FTS_SL:
+            case FTS_SLNONE:
+                unlink(p->fts_path);
+                break;
+            case FTS_DP:
+                rmdir(p->fts_path);
+                break;
+            }
+        }
+        return 0;
+    } else {
+        if (tombstone) {
+            return truncate(path.c_str(), 0);
+        } else {
+            return unlink(path.c_str());
+        }
     }
 }
 
diff --git a/cmds/installd/CacheItem.h b/cmds/installd/CacheItem.h
index bec8bc8..afbb15d 100644
--- a/cmds/installd/CacheItem.h
+++ b/cmds/installd/CacheItem.h
@@ -36,7 +36,7 @@
  */
 class CacheItem {
 public:
-    CacheItem(const std::shared_ptr<CacheItem>& parent, FTSENT* p);
+    CacheItem(FTSENT* p);
     ~CacheItem();
 
     std::string toString();
@@ -46,11 +46,13 @@
 
     short level;
     bool directory;
+    bool atomic;
+    bool tombstone;
     int64_t size;
     time_t modified;
 
 private:
-    std::shared_ptr<CacheItem> mParent;
+    CacheItem* mParent;
     std::string mName;
 
     DISALLOW_COPY_AND_ASSIGN(CacheItem);
diff --git a/cmds/installd/CacheTracker.cpp b/cmds/installd/CacheTracker.cpp
index 23c4330..9377836 100644
--- a/cmds/installd/CacheTracker.cpp
+++ b/cmds/installd/CacheTracker.cpp
@@ -20,6 +20,7 @@
 
 #include <fts.h>
 #include <sys/quota.h>
+#include <sys/xattr.h>
 #include <utils/Trace.h>
 
 #include <android-base/logging.h>
@@ -86,30 +87,59 @@
         PLOG(WARNING) << "Failed to fts_open " << path;
         return;
     }
-    // TODO: add support for "user.atomic" and "user.tombstone" xattrs
-    while ((p = fts_read(fts)) != NULL) {
+    while ((p = fts_read(fts)) != nullptr) {
+        if (p->fts_level == 0) continue;
+
+        // Create tracking nodes for everything we encounter
         switch (p->fts_info) {
         case FTS_D:
-            // Track the newest mtime of anything inside so we consider
-            // deleting the directory last
-            p->fts_number = p->fts_statp->st_mtime;
-            break;
-        case FTS_DP:
-            p->fts_statp->st_mtime = p->fts_number;
-
-            // Ignore the actual top-level cache directories
-            if (p->fts_level == 0) break;
         case FTS_DEFAULT:
         case FTS_F:
         case FTS_SL:
-        case FTS_SLNONE:
-            // TODO: optimize path memory footprint
-            items.push_back(std::shared_ptr<CacheItem>(new CacheItem(nullptr, p)));
+        case FTS_SLNONE: {
+            auto item = std::shared_ptr<CacheItem>(new CacheItem(p));
+            p->fts_pointer = static_cast<void*>(item.get());
+            items.push_back(item);
+        }
+        }
 
-            // Track the newest modified item under this tree
-            p->fts_parent->fts_number =
-                    std::max(p->fts_parent->fts_number, p->fts_statp->st_mtime);
-            break;
+        switch (p->fts_info) {
+        case FTS_D: {
+            auto item = static_cast<CacheItem*>(p->fts_pointer);
+            item->atomic |= (getxattr(p->fts_path, kXattrCacheAtomic, nullptr, 0) >= 0);
+            item->tombstone |= (getxattr(p->fts_path, kXattrCacheTombstone, nullptr, 0) >= 0);
+
+            // When atomic, immediately collect all files under tree
+            if (item->atomic) {
+                while ((p = fts_read(fts)) != nullptr) {
+                    if (p->fts_info == FTS_DP && p->fts_level == item->level) break;
+                    switch (p->fts_info) {
+                    case FTS_D:
+                    case FTS_DEFAULT:
+                    case FTS_F:
+                    case FTS_SL:
+                    case FTS_SLNONE:
+                        item->size += p->fts_statp->st_blocks * 512;
+                        item->modified = std::max(item->modified, p->fts_statp->st_mtime);
+                    }
+                }
+            }
+        }
+        }
+
+        // Bubble up modified time to parent
+        switch (p->fts_info) {
+        case FTS_DP:
+        case FTS_DEFAULT:
+        case FTS_F:
+        case FTS_SL:
+        case FTS_SLNONE: {
+            auto item = static_cast<CacheItem*>(p->fts_pointer);
+            auto parent = static_cast<CacheItem*>(p->fts_parent->fts_pointer);
+            if (parent) {
+                parent->modified = std::max(parent->modified, item->modified);
+            }
+        }
         }
     }
     fts_close(fts);
@@ -137,7 +167,7 @@
         }
         return left->directory;
     };
-    std::sort(items.begin(), items.end(), cmp);
+    std::stable_sort(items.begin(), items.end(), cmp);
     ATRACE_END();
 }
 
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index 535d060..a84b051 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -86,7 +86,8 @@
 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_NOOP = 1 << 14;
+static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14;
+static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15;
 
 namespace {
 
@@ -833,6 +834,14 @@
         ATRACE_BEGIN("bounce");
         std::shared_ptr<CacheTracker> active;
         while (active || !queue.empty()) {
+            // Only look at apps under quota when explicitly requested
+            if (active && (active->getCacheRatio() < 10000)
+                    && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) {
+                LOG(DEBUG) << "Active ratio " << active->getCacheRatio()
+                        << " isn't over quota, and defy not requested";
+                break;
+            }
+
             // Find the best tracker to work with; this might involve swapping
             // if the active tracker is no longer the most over quota
             bool nextBetter = active && !queue.empty()
@@ -2014,5 +2023,11 @@
     return mQuotaDevices[path];
 }
 
+binder::Status InstalldNativeService::isQuotaSupported(
+        const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) {
+    *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty();
+    return ok();
+}
+
 }  // namespace installd
 }  // namespace android
diff --git a/cmds/installd/InstalldNativeService.h b/cmds/installd/InstalldNativeService.h
index b3dbaf4..feb2219 100644
--- a/cmds/installd/InstalldNativeService.h
+++ b/cmds/installd/InstalldNativeService.h
@@ -111,6 +111,8 @@
         const std::unique_ptr<std::string>& volumeUuid, int32_t storage_flag, bool* _aidl_return);
 
     binder::Status invalidateMounts();
+    binder::Status isQuotaSupported(const std::unique_ptr<std::string>& volumeUuid,
+            bool* _aidl_return);
 
 private:
     std::recursive_mutex mLock;
diff --git a/cmds/installd/binder/android/os/IInstalld.aidl b/cmds/installd/binder/android/os/IInstalld.aidl
index b45df87..4195a01 100644
--- a/cmds/installd/binder/android/os/IInstalld.aidl
+++ b/cmds/installd/binder/android/os/IInstalld.aidl
@@ -77,4 +77,5 @@
         int storage_flag);
 
     void invalidateMounts();
+    boolean isQuotaSupported(@nullable @utf8InCpp String uuid);
 }
diff --git a/cmds/installd/tests/Android.bp b/cmds/installd/tests/Android.bp
index a32df22..b5b080d 100644
--- a/cmds/installd/tests/Android.bp
+++ b/cmds/installd/tests/Android.bp
@@ -14,3 +14,22 @@
         "libdiskusage",
     ],
 }
+
+cc_test {
+    name: "installd_cache_test",
+    clang: true,
+    srcs: ["installd_cache_test.cpp"],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libcutils",
+        "liblog",
+        "liblogwrap",
+        "libselinux",
+        "libutils",
+    ],
+    static_libs: [
+        "libinstalld",
+        "libdiskusage",
+    ],
+}
diff --git a/cmds/installd/tests/installd_cache_test.cpp b/cmds/installd/tests/installd_cache_test.cpp
new file mode 100644
index 0000000..50a47d2
--- /dev/null
+++ b/cmds/installd/tests/installd_cache_test.cpp
@@ -0,0 +1,323 @@
+/*
+ * 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.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/statvfs.h>
+#include <sys/xattr.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <cutils/properties.h>
+#include <gtest/gtest.h>
+
+#include "InstalldNativeService.h"
+#include "globals.h"
+#include "utils.h"
+
+using android::base::StringPrintf;
+
+namespace android {
+namespace installd {
+
+constexpr const char* kTestUuid = "TEST";
+
+constexpr int64_t kKbInBytes = 1024;
+constexpr int64_t kMbInBytes = 1024 * kKbInBytes;
+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;
+
+int get_property(const char *key, char *value, const char *default_value) {
+    return property_get(key, value, default_value);
+}
+
+bool calculate_oat_file_path(char path[PKG_PATH_MAX] ATTRIBUTE_UNUSED,
+        const char *oat_dir ATTRIBUTE_UNUSED,
+        const char *apk_path ATTRIBUTE_UNUSED,
+        const char *instruction_set ATTRIBUTE_UNUSED) {
+    return false;
+}
+
+bool calculate_odex_file_path(char path[PKG_PATH_MAX] ATTRIBUTE_UNUSED,
+        const char *apk_path ATTRIBUTE_UNUSED,
+        const char *instruction_set ATTRIBUTE_UNUSED) {
+    return false;
+}
+
+bool create_cache_path(char path[PKG_PATH_MAX] ATTRIBUTE_UNUSED,
+        const char *src ATTRIBUTE_UNUSED,
+        const char *instruction_set ATTRIBUTE_UNUSED) {
+    return false;
+}
+
+static void mkdir(const char* path) {
+    const char* fullPath = StringPrintf("/data/local/tmp/user/0/%s", path).c_str();
+    ::mkdir(fullPath, 0755);
+}
+
+static void touch(const char* path, int len, int time) {
+    const char* fullPath = StringPrintf("/data/local/tmp/user/0/%s", path).c_str();
+    int fd = ::open(fullPath, O_RDWR | O_CREAT, 0644);
+    ::fallocate(fd, 0, 0, len);
+    ::close(fd);
+    struct utimbuf times;
+    times.actime = times.modtime = std::time(0) + time;
+    ::utime(fullPath, &times);
+}
+
+static int exists(const char* path) {
+    const char* fullPath = StringPrintf("/data/local/tmp/user/0/%s", path).c_str();
+    return ::access(fullPath, F_OK);
+}
+
+static int64_t size(const char* path) {
+    const char* fullPath = StringPrintf("/data/local/tmp/user/0/%s", path).c_str();
+    struct stat buf;
+    if (!stat(fullPath, &buf)) {
+        return buf.st_size;
+    } else {
+        return -1;
+    }
+}
+
+static int64_t free() {
+    struct statvfs buf;
+    if (!statvfs("/data/local/tmp", &buf)) {
+        return buf.f_bavail * buf.f_bsize;
+    } else {
+        return -1;
+    }
+}
+
+static void setxattr(const char* path, const char* key) {
+    const char* fullPath = StringPrintf("/data/local/tmp/user/0/%s", path).c_str();
+    ::setxattr(fullPath, key, "", 0, 0);
+}
+
+class CacheTest : public testing::Test {
+protected:
+    InstalldNativeService* service;
+    std::unique_ptr<std::string> testUuid;
+
+    virtual void SetUp() {
+        setenv("ANDROID_LOG_TAGS", "*:v", 1);
+        android::base::InitLogging(nullptr);
+
+        service = new InstalldNativeService();
+        testUuid = std::make_unique<std::string>();
+        *testUuid = std::string(kTestUuid);
+        system("mkdir -p /data/local/tmp/user/0");
+    }
+
+    virtual void TearDown() {
+        delete service;
+        system("rm -rf /data/local/tmp/user");
+    }
+};
+
+TEST_F(CacheTest, FreeCache_All) {
+    mkdir("com.example");
+    touch("com.example/normal", 1 * kMbInBytes, 60);
+    mkdir("com.example/cache");
+    mkdir("com.example/cache/foo");
+    touch("com.example/cache/foo/one", 1 * kMbInBytes, 60);
+    touch("com.example/cache/foo/two", 2 * kMbInBytes, 120);
+
+    EXPECT_EQ(0, exists("com.example/normal"));
+    EXPECT_EQ(0, exists("com.example/cache/foo/one"));
+    EXPECT_EQ(0, exists("com.example/cache/foo/two"));
+
+    service->freeCache(testUuid, kTbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(0, exists("com.example/normal"));
+    EXPECT_EQ(-1, exists("com.example/cache/foo/one"));
+    EXPECT_EQ(-1, exists("com.example/cache/foo/two"));
+}
+
+TEST_F(CacheTest, FreeCache_Age) {
+    mkdir("com.example");
+    mkdir("com.example/cache");
+    mkdir("com.example/cache/foo");
+    touch("com.example/cache/foo/one", kMbInBytes, 60);
+    touch("com.example/cache/foo/two", kMbInBytes, 120);
+
+    service->freeCache(testUuid, free() + kKbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(-1, exists("com.example/cache/foo/one"));
+    EXPECT_EQ(0, exists("com.example/cache/foo/two"));
+
+    service->freeCache(testUuid, free() + kKbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(-1, exists("com.example/cache/foo/one"));
+    EXPECT_EQ(-1, exists("com.example/cache/foo/two"));
+}
+
+TEST_F(CacheTest, FreeCache_Tombstone) {
+    mkdir("com.example");
+    mkdir("com.example/cache");
+    mkdir("com.example/cache/foo");
+    touch("com.example/cache/foo/foo1", 1 * kMbInBytes, 60);
+    touch("com.example/cache/foo/foo2", 1 * kMbInBytes, 60);
+    mkdir("com.example/cache/bar");
+    touch("com.example/cache/bar/bar1", 2 * kMbInBytes, 120);
+    touch("com.example/cache/bar/bar2", 2 * kMbInBytes, 120);
+
+    setxattr("com.example/cache/bar", "user.cache_tombstone");
+
+    EXPECT_EQ(0, exists("com.example/cache/foo/foo1"));
+    EXPECT_EQ(0, exists("com.example/cache/foo/foo2"));
+    EXPECT_EQ(0, exists("com.example/cache/bar/bar1"));
+    EXPECT_EQ(0, exists("com.example/cache/bar/bar2"));
+    EXPECT_EQ(2 * kMbInBytes, size("com.example/cache/bar/bar1"));
+    EXPECT_EQ(2 * kMbInBytes, size("com.example/cache/bar/bar2"));
+
+    service->freeCache(testUuid, kTbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(-1, exists("com.example/cache/foo/foo1"));
+    EXPECT_EQ(-1, exists("com.example/cache/foo/foo2"));
+    EXPECT_EQ(0, exists("com.example/cache/bar/bar1"));
+    EXPECT_EQ(0, exists("com.example/cache/bar/bar2"));
+    EXPECT_EQ(0, size("com.example/cache/bar/bar1"));
+    EXPECT_EQ(0, size("com.example/cache/bar/bar2"));
+}
+
+TEST_F(CacheTest, FreeCache_Atomic) {
+    mkdir("com.example");
+    mkdir("com.example/cache");
+    mkdir("com.example/cache/foo");
+    touch("com.example/cache/foo/foo1", 1 * kMbInBytes, 60);
+    touch("com.example/cache/foo/foo2", 1 * kMbInBytes, 120);
+
+    setxattr("com.example/cache/foo", "user.cache_atomic");
+
+    service->freeCache(testUuid, free() + kKbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(-1, exists("com.example/cache/foo/foo1"));
+    EXPECT_EQ(-1, exists("com.example/cache/foo/foo2"));
+}
+
+TEST_F(CacheTest, FreeCache_AtomicTombstone) {
+    LOG(INFO) << "FreeCache_AtomicTombstone";
+
+    mkdir("com.example");
+    mkdir("com.example/cache");
+
+    // this dir must look really old for some reason?
+    mkdir("com.example/cache/atomic");
+    touch("com.example/cache/atomic/file1", kMbInBytes, 120);
+    touch("com.example/cache/atomic/file2", kMbInBytes, 120);
+    mkdir("com.example/cache/atomic/dir");
+    touch("com.example/cache/atomic/dir/file1", kMbInBytes, 120);
+    touch("com.example/cache/atomic/dir/file2", kMbInBytes, 120);
+    mkdir("com.example/cache/atomic/tomb");
+    touch("com.example/cache/atomic/tomb/file1", kMbInBytes, 120);
+    touch("com.example/cache/atomic/tomb/file2", kMbInBytes, 120);
+    mkdir("com.example/cache/atomic/tomb/dir");
+    touch("com.example/cache/atomic/tomb/dir/file1", kMbInBytes, 120);
+    touch("com.example/cache/atomic/tomb/dir/file2", kMbInBytes, 120);
+
+    mkdir("com.example/cache/tomb");
+    touch("com.example/cache/tomb/file1", kMbInBytes, 240);
+    touch("com.example/cache/tomb/file2", kMbInBytes, 240);
+    mkdir("com.example/cache/tomb/dir");
+    touch("com.example/cache/tomb/dir/file1", kMbInBytes, 240);
+    touch("com.example/cache/tomb/dir/file2", kMbInBytes, 240);
+    mkdir("com.example/cache/tomb/atomic");
+    touch("com.example/cache/tomb/atomic/file1", kMbInBytes, 60);
+    touch("com.example/cache/tomb/atomic/file2", kMbInBytes, 60);
+    mkdir("com.example/cache/tomb/atomic/dir");
+    touch("com.example/cache/tomb/atomic/dir/file1", kMbInBytes, 60);
+    touch("com.example/cache/tomb/atomic/dir/file2", kMbInBytes, 60);
+
+    setxattr("com.example/cache/atomic", "user.cache_atomic");
+    setxattr("com.example/cache/atomic/tomb", "user.cache_tombstone");
+    setxattr("com.example/cache/tomb", "user.cache_tombstone");
+    setxattr("com.example/cache/tomb/atomic", "user.cache_atomic");
+
+    service->freeCache(testUuid, free() + kKbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/file2"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/dir/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/dir/file2"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/tomb/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/tomb/file2"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/tomb/dir/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/atomic/tomb/dir/file2"));
+
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/file2"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/dir/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/dir/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/dir/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/dir/file2"));
+
+    service->freeCache(testUuid, free() + kKbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(-1, size("com.example/cache/atomic/file1"));
+    EXPECT_EQ(-1, size("com.example/cache/atomic/file2"));
+    EXPECT_EQ(-1, size("com.example/cache/atomic/dir/file1"));
+    EXPECT_EQ(-1, size("com.example/cache/atomic/dir/file2"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/file1"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/file2"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/dir/file1"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/dir/file2"));
+
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/file2"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/dir/file1"));
+    EXPECT_EQ(kMbInBytes, size("com.example/cache/tomb/dir/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/dir/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/dir/file2"));
+
+    service->freeCache(testUuid, kTbInBytes,
+            FLAG_FREE_CACHE_V2 | FLAG_FREE_CACHE_V2_DEFY_QUOTA);
+
+    EXPECT_EQ(-1, size("com.example/cache/atomic/file1"));
+    EXPECT_EQ(-1, size("com.example/cache/atomic/file2"));
+    EXPECT_EQ(-1, size("com.example/cache/atomic/dir/file1"));
+    EXPECT_EQ(-1, size("com.example/cache/atomic/dir/file2"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/file1"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/file2"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/dir/file1"));
+    EXPECT_EQ(0, size("com.example/cache/atomic/tomb/dir/file2"));
+
+    EXPECT_EQ(0, size("com.example/cache/tomb/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/dir/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/dir/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/file2"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/dir/file1"));
+    EXPECT_EQ(0, size("com.example/cache/tomb/atomic/dir/file2"));
+}
+
+}  // namespace installd
+}  // namespace android
diff --git a/cmds/installd/tests/installd_utils_test.cpp b/cmds/installd/tests/installd_utils_test.cpp
index 947cc0d..4b68574 100644
--- a/cmds/installd/tests/installd_utils_test.cpp
+++ b/cmds/installd/tests/installd_utils_test.cpp
@@ -29,6 +29,7 @@
 #define TEST_DATA_DIR "/data/"
 #define TEST_APP_DIR "/data/app/"
 #define TEST_APP_PRIVATE_DIR "/data/app-private/"
+#define TEST_APP_EPHEMERAL_DIR "/data/app-ephemeral/"
 #define TEST_ASEC_DIR "/mnt/asec/"
 #define TEST_EXPAND_DIR "/mnt/expand/"
 
@@ -57,6 +58,9 @@
         android_app_private_dir.path = (char*) TEST_APP_PRIVATE_DIR;
         android_app_private_dir.len = strlen(TEST_APP_PRIVATE_DIR);
 
+        android_app_ephemeral_dir.path = (char*) TEST_APP_EPHEMERAL_DIR;
+        android_app_ephemeral_dir.len = strlen(TEST_APP_EPHEMERAL_DIR);
+
         android_data_dir.path = (char*) TEST_DATA_DIR;
         android_data_dir.len = strlen(TEST_DATA_DIR);
 
@@ -85,19 +89,19 @@
     // Bad prefixes directories
     const char *badprefix1 = "/etc/passwd";
     EXPECT_EQ(-1, validate_apk_path(badprefix1))
-            << badprefix1 << " should be allowed as a valid path";
+            << badprefix1 << " should not be allowed as a valid path";
 
     const char *badprefix2 = "../.." TEST_APP_DIR "../../../blah";
     EXPECT_EQ(-1, validate_apk_path(badprefix2))
-            << badprefix2 << " should be allowed as a valid path";
+            << badprefix2 << " should not be allowed as a valid path";
 
     const char *badprefix3 = "init.rc";
     EXPECT_EQ(-1, validate_apk_path(badprefix3))
-            << badprefix3 << " should be allowed as a valid path";
+            << badprefix3 << " should not be allowed as a valid path";
 
     const char *badprefix4 = "/init.rc";
     EXPECT_EQ(-1, validate_apk_path(badprefix4))
-            << badprefix4 << " should be allowed as a valid path";
+            << badprefix4 << " should not be allowed as a valid path";
 }
 
 TEST_F(UtilsTest, IsValidApkPath_Internal) {
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index 37215ea..6d50f55 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -33,6 +33,7 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 #include <cutils/fs.h>
+#include <cutils/properties.h>
 #include <log/log.h>
 #include <private/android_filesystem_config.h>
 
@@ -155,6 +156,9 @@
 std::string create_data_path(const char* volume_uuid) {
     if (volume_uuid == nullptr) {
         return "/data";
+    } else if (!strcmp(volume_uuid, "TEST")) {
+        CHECK(property_get_bool("ro.debuggable", false));
+        return "/data/local/tmp";
     } else {
         CHECK(is_valid_filename(volume_uuid));
         return StringPrintf("/mnt/expand/%s", volume_uuid);
diff --git a/cmds/installd/utils.h b/cmds/installd/utils.h
index 5226d1c..aa83dc2 100644
--- a/cmds/installd/utils.h
+++ b/cmds/installd/utils.h
@@ -66,6 +66,8 @@
 
 constexpr const char* kXattrInodeCache = "user.inode_cache";
 constexpr const char* kXattrInodeCodeCache = "user.inode_code_cache";
+constexpr const char* kXattrCacheAtomic = "user.cache_atomic";
+constexpr const char* kXattrCacheTombstone = "user.cache_tombstone";
 
 int create_pkg_path(char path[PKG_PATH_MAX],
                     const char *pkgname,
diff --git a/cmds/lshal/Lshal.cpp b/cmds/lshal/Lshal.cpp
index ce058c8..6fd9b21 100644
--- a/cmds/lshal/Lshal.cpp
+++ b/cmds/lshal/Lshal.cpp
@@ -469,9 +469,17 @@
     return status;
 }
 
+void signalHandler(int sig) {
+    if (sig == SIGINT) {
+        int retVal;
+        pthread_exit(&retVal);
+    }
+}
+
 }  // namespace lshal
 }  // namespace android
 
 int main(int argc, char **argv) {
+    signal(SIGINT, ::android::lshal::signalHandler);
     return ::android::lshal::Lshal{}.main(argc, argv);
 }
diff --git a/cmds/lshal/Timeout.h b/cmds/lshal/Timeout.h
index bf883c0..ca477bf 100644
--- a/cmds/lshal/Timeout.h
+++ b/cmds/lshal/Timeout.h
@@ -29,7 +29,8 @@
 
 class BackgroundTaskState {
 public:
-    BackgroundTaskState(){}
+    BackgroundTaskState(std::function<void(void)> &&func)
+            : mFunc(std::forward<decltype(func)>(func)) {}
     void notify() {
         std::unique_lock<std::mutex> lock(mMutex);
         mFinished = true;
@@ -42,22 +43,37 @@
         mCondVar.wait_until(lock, end, [this](){ return this->mFinished; });
         return mFinished;
     }
+    void operator()() {
+        mFunc();
+    }
 private:
     std::mutex mMutex;
     std::condition_variable mCondVar;
     bool mFinished = false;
+    std::function<void(void)> mFunc;
 };
 
+void *callAndNotify(void *data) {
+    BackgroundTaskState &state = *static_cast<BackgroundTaskState *>(data);
+    state();
+    state.notify();
+    return NULL;
+}
+
 template<class R, class P>
-bool timeout(std::chrono::duration<R, P> delay, const std::function<void(void)> &func) {
+bool timeout(std::chrono::duration<R, P> delay, std::function<void(void)> &&func) {
     auto now = std::chrono::system_clock::now();
-    BackgroundTaskState state{};
-    std::thread t([&state, &func] {
-        func();
-        state.notify();
-    });
-    t.detach();
+    BackgroundTaskState state{std::forward<decltype(func)>(func)};
+    pthread_t thread;
+    if (pthread_create(&thread, NULL, callAndNotify, &state)) {
+        std::cerr << "FATAL: could not create background thread." << std::endl;
+        return false;
+    }
     bool success = state.wait(now + delay);
+    if (!success) {
+        pthread_kill(thread, SIGINT);
+    }
+    pthread_join(thread, NULL);
     return success;
 }
 
@@ -69,7 +85,7 @@
     auto boundFunc = std::bind(std::forward<Function>(func),
             interfaceObject.get(), std::forward<Args>(args)...);
     bool success = timeout(IPC_CALL_WAIT, [&ret, &boundFunc] {
-        ret = boundFunc();
+        ret = std::move(boundFunc());
     });
     if (!success) {
         return Status::fromStatusT(TIMED_OUT);
diff --git a/cmds/surfacereplayer/replayer/Android.mk b/cmds/surfacereplayer/replayer/Android.mk
index 3ec3178..1dd926c 100644
--- a/cmds/surfacereplayer/replayer/Android.mk
+++ b/cmds/surfacereplayer/replayer/Android.mk
@@ -42,6 +42,7 @@
     libutils \
     libprotobuf-cpp-lite \
     libbase \
+    libnativewindow \
 
 LOCAL_STATIC_LIBRARIES := \
     libtrace_proto \
@@ -61,6 +62,7 @@
     libprotobuf-cpp-lite \
     libsurfacereplayer \
     libutils \
+    libgui \
 
 LOCAL_STATIC_LIBRARIES := \
     libtrace_proto \
diff --git a/docs/Doxyfile b/docs/Doxyfile
index 3ea453f..bb0ca32 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -14,90 +14,90 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 
-# This tag specifies the encoding used for all characters in the config file 
-# that follow. The default is UTF-8 which is also the encoding used for all 
-# text before the first occurrence of this tag. Doxygen uses libiconv (or the 
-# iconv built into libc) for the transcoding. See 
+# This tag specifies the encoding used for all characters in the config file
+# that follow. The default is UTF-8 which is also the encoding used for all
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the
+# iconv built into libc) for the transcoding. See
 # http://www.gnu.org/software/libiconv for the list of possible encodings.
 
 DOXYFILE_ENCODING      = UTF-8
 
-# The PROJECT_NAME tag is a single word (or sequence of words) that should 
-# identify the project. Note that if you do not use Doxywizard you need 
+# The PROJECT_NAME tag is a single word (or sequence of words) that should
+# identify the project. Note that if you do not use Doxywizard you need
 # to put quotes around the project name if it contains spaces.
 
 PROJECT_NAME           = "NDK API"
 
-# The PROJECT_NUMBER tag can be used to enter a project or revision number. 
-# This could be handy for archiving the generated documentation or 
+# The PROJECT_NUMBER tag can be used to enter a project or revision number.
+# This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 
+PROJECT_NUMBER         =
 
-# Using the PROJECT_BRIEF tag one can provide an optional one line description 
-# for a project that appears at the top of each page and should give viewer 
+# Using the PROJECT_BRIEF tag one can provide an optional one line description
+# for a project that appears at the top of each page and should give viewer
 # a quick idea about the purpose of the project. Keep the description short.
 
 PROJECT_BRIEF          = ""
 
-# With the PROJECT_LOGO tag one can specify an logo or icon that is 
-# included in the documentation. The maximum height of the logo should not 
-# exceed 55 pixels and the maximum width should not exceed 200 pixels. 
+# With the PROJECT_LOGO tag one can specify an logo or icon that is
+# included in the documentation. The maximum height of the logo should not
+# exceed 55 pixels and the maximum width should not exceed 200 pixels.
 # Doxygen will copy the logo to the output directory.
 
 PROJECT_LOGO           = logo.png
 
-# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
-# base path where the generated documentation will be put. 
-# If a relative path is entered, it will be relative to the location 
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
+# base path where the generated documentation will be put.
+# If a relative path is entered, it will be relative to the location
 # where doxygen was started. If left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = 
+OUTPUT_DIRECTORY       =
 
-# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 
-# 4096 sub-directories (in 2 levels) under the output directory of each output 
-# format and will distribute the generated files over these directories. 
-# Enabling this option can be useful when feeding doxygen a huge amount of 
-# source files, where putting all generated files in the same directory would 
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
+# 4096 sub-directories (in 2 levels) under the output directory of each output
+# format and will distribute the generated files over these directories.
+# Enabling this option can be useful when feeding doxygen a huge amount of
+# source files, where putting all generated files in the same directory would
 # otherwise cause performance problems for the file system.
 
 CREATE_SUBDIRS         = NO
 
-# The OUTPUT_LANGUAGE tag is used to specify the language in which all 
-# documentation generated by doxygen is written. Doxygen will use this 
-# information to generate all constant output in the proper language. 
-# The default language is English, other supported languages are: 
-# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional, 
-# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German, 
-# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English 
-# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian, 
-# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrillic, Slovak, 
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# The default language is English, other supported languages are:
+# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional,
+# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German,
+# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English
+# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian,
+# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrillic, Slovak,
 # Slovene, Spanish, Swedish, Ukrainian, and Vietnamese.
 
 OUTPUT_LANGUAGE        = English
 
-# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will 
-# include brief member descriptions after the members that are listed in 
-# the file and class documentation (similar to JavaDoc). 
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
+# include brief member descriptions after the members that are listed in
+# the file and class documentation (similar to JavaDoc).
 # Set to NO to disable this.
 
 BRIEF_MEMBER_DESC      = YES
 
-# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend 
-# the brief description of a member or function before the detailed description. 
-# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the 
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend
+# the brief description of a member or function before the detailed description.
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
 # brief descriptions will be completely suppressed.
 
 REPEAT_BRIEF           = YES
 
-# This tag implements a quasi-intelligent brief description abbreviator 
-# that is used to form the text in various listings. Each string 
-# in this list, if found as the leading text of the brief description, will be 
-# stripped from the text and the result after processing the whole list, is 
-# used as the annotated text. Otherwise, the brief description is used as-is. 
-# If left blank, the following values are used ("$name" is automatically 
-# replaced with the name of the entity): "The $name class" "The $name widget" 
-# "The $name file" "is" "provides" "specifies" "contains" 
+# This tag implements a quasi-intelligent brief description abbreviator
+# that is used to form the text in various listings. Each string
+# in this list, if found as the leading text of the brief description, will be
+# stripped from the text and the result after processing the whole list, is
+# used as the annotated text. Otherwise, the brief description is used as-is.
+# If left blank, the following values are used ("$name" is automatically
+# replaced with the name of the entity): "The $name class" "The $name widget"
+# "The $name file" "is" "provides" "specifies" "contains"
 # "represents" "a" "an" "the"
 
 ABBREVIATE_BRIEF       = "The $name class" \
@@ -112,256 +112,256 @@
                          an \
                          the
 
-# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then 
-# Doxygen will generate a detailed section even if there is only a brief 
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# Doxygen will generate a detailed section even if there is only a brief
 # description.
 
 ALWAYS_DETAILED_SEC    = NO
 
-# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all 
-# inherited members of a class in the documentation of that class as if those 
-# members were ordinary class members. Constructors, destructors and assignment 
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
 # operators of the base classes will not be shown.
 
 INLINE_INHERITED_MEMB  = NO
 
-# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full 
-# path before files name in the file list and in the header files. If set 
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full
+# path before files name in the file list and in the header files. If set
 # to NO the shortest path that makes the file name unique will be used.
 
 FULL_PATH_NAMES        = NO
 
-# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag 
-# can be used to strip a user-defined part of the path. Stripping is 
-# only done if one of the specified strings matches the left-hand part of 
-# the path. The tag can be used to show relative paths in the file list. 
-# If left blank the directory from which doxygen is run is used as the 
-# path to strip. Note that you specify absolute paths here, but also 
-# relative paths, which will be relative from the directory where doxygen is 
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag
+# can be used to strip a user-defined part of the path. Stripping is
+# only done if one of the specified strings matches the left-hand part of
+# the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the
+# path to strip. Note that you specify absolute paths here, but also
+# relative paths, which will be relative from the directory where doxygen is
 # started.
 
-STRIP_FROM_PATH        = 
+STRIP_FROM_PATH        =
 
-# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of 
-# the path mentioned in the documentation of a class, which tells 
-# the reader which header file to include in order to use a class. 
-# If left blank only the name of the header file containing the class 
-# definition is used. Otherwise one should specify the include paths that 
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
+# the path mentioned in the documentation of a class, which tells
+# the reader which header file to include in order to use a class.
+# If left blank only the name of the header file containing the class
+# definition is used. Otherwise one should specify the include paths that
 # are normally passed to the compiler using the -I flag.
 
-STRIP_FROM_INC_PATH    = 
+STRIP_FROM_INC_PATH    =
 
-# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter 
-# (but less readable) file names. This can be useful if your file system 
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter
+# (but less readable) file names. This can be useful if your file system
 # doesn't support long names like on DOS, Mac, or CD-ROM.
 
 SHORT_NAMES            = NO
 
-# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen 
-# will interpret the first line (until the first dot) of a JavaDoc-style 
-# comment as the brief description. If set to NO, the JavaDoc 
-# comments will behave just like regular Qt-style comments 
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen
+# will interpret the first line (until the first dot) of a JavaDoc-style
+# comment as the brief description. If set to NO, the JavaDoc
+# comments will behave just like regular Qt-style comments
 # (thus requiring an explicit @brief command for a brief description.)
 
 JAVADOC_AUTOBRIEF      = NO
 
-# If the QT_AUTOBRIEF tag is set to YES then Doxygen will 
-# interpret the first line (until the first dot) of a Qt-style 
-# comment as the brief description. If set to NO, the comments 
-# will behave just like regular Qt-style comments (thus requiring 
+# If the QT_AUTOBRIEF tag is set to YES then Doxygen will
+# interpret the first line (until the first dot) of a Qt-style
+# comment as the brief description. If set to NO, the comments
+# will behave just like regular Qt-style comments (thus requiring
 # an explicit \brief command for a brief description.)
 
 QT_AUTOBRIEF           = NO
 
-# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen 
-# treat a multi-line C++ special comment block (i.e. a block of //! or /// 
-# comments) as a brief description. This used to be the default behaviour. 
-# The new default is to treat a multi-line C++ comment block as a detailed 
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
+# treat a multi-line C++ special comment block (i.e. a block of //! or ///
+# comments) as a brief description. This used to be the default behaviour.
+# The new default is to treat a multi-line C++ comment block as a detailed
 # description. Set this tag to YES if you prefer the old behaviour instead.
 
 MULTILINE_CPP_IS_BRIEF = NO
 
-# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented 
-# member inherits the documentation from any documented member that it 
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented
+# member inherits the documentation from any documented member that it
 # re-implements.
 
 INHERIT_DOCS           = YES
 
-# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce 
-# a new page for each member. If set to NO, the documentation of a member will 
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce
+# a new page for each member. If set to NO, the documentation of a member will
 # be part of the file/class/namespace that contains it.
 
 SEPARATE_MEMBER_PAGES  = NO
 
-# The TAB_SIZE tag can be used to set the number of spaces in a tab. 
+# The TAB_SIZE tag can be used to set the number of spaces in a tab.
 # Doxygen uses this value to replace tabs by spaces in code fragments.
 
 TAB_SIZE               = 4
 
-# This tag can be used to specify a number of aliases that acts 
-# as commands in the documentation. An alias has the form "name=value". 
-# For example adding "sideeffect=\par Side Effects:\n" will allow you to 
-# put the command \sideeffect (or @sideeffect) in the documentation, which 
-# will result in a user-defined paragraph with heading "Side Effects:". 
+# This tag can be used to specify a number of aliases that acts
+# as commands in the documentation. An alias has the form "name=value".
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to
+# put the command \sideeffect (or @sideeffect) in the documentation, which
+# will result in a user-defined paragraph with heading "Side Effects:".
 # You can put \n's in the value part of an alias to insert newlines.
 
-ALIASES                = 
+ALIASES                =
 
-# This tag can be used to specify a number of word-keyword mappings (TCL only). 
-# A mapping has the form "name=value". For example adding 
-# "class=itcl::class" will allow you to use the command class in the 
+# This tag can be used to specify a number of word-keyword mappings (TCL only).
+# A mapping has the form "name=value". For example adding
+# "class=itcl::class" will allow you to use the command class in the
 # itcl::class meaning.
 
-TCL_SUBST              = 
+TCL_SUBST              =
 
-# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C 
-# sources only. Doxygen will then generate output that is more tailored for C. 
-# For instance, some of the names that are used will be different. The list 
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
+# sources only. Doxygen will then generate output that is more tailored for C.
+# For instance, some of the names that are used will be different. The list
 # of all members will be omitted, etc.
 
 OPTIMIZE_OUTPUT_FOR_C  = YES
 
-# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
-# sources only. Doxygen will then generate output that is more tailored for 
-# Java. For instance, namespaces will be presented as packages, qualified 
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java
+# sources only. Doxygen will then generate output that is more tailored for
+# Java. For instance, namespaces will be presented as packages, qualified
 # scopes will look different, etc.
 
 OPTIMIZE_OUTPUT_JAVA   = NO
 
-# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran 
-# sources only. Doxygen will then generate output that is more tailored for 
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran
+# sources only. Doxygen will then generate output that is more tailored for
 # Fortran.
 
 OPTIMIZE_FOR_FORTRAN   = NO
 
-# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL 
-# sources. Doxygen will then generate output that is tailored for 
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL
+# sources. Doxygen will then generate output that is tailored for
 # VHDL.
 
 OPTIMIZE_OUTPUT_VHDL   = NO
 
-# Doxygen selects the parser to use depending on the extension of the files it 
-# parses. With this tag you can assign which parser to use for a given 
-# extension. Doxygen has a built-in mapping, but you can override or extend it 
-# using this tag. The format is ext=language, where ext is a file extension, 
-# and language is one of the parsers supported by doxygen: IDL, Java, 
-# Javascript, CSharp, C, C++, D, PHP, Objective-C, Python, Fortran, VHDL, C, 
-# C++. For instance to make doxygen treat .inc files as Fortran files (default 
-# is PHP), and .f files as C (default is Fortran), use: inc=Fortran f=C. Note 
-# that for custom extensions you also need to set FILE_PATTERNS otherwise the 
+# Doxygen selects the parser to use depending on the extension of the files it
+# parses. With this tag you can assign which parser to use for a given
+# extension. Doxygen has a built-in mapping, but you can override or extend it
+# using this tag. The format is ext=language, where ext is a file extension,
+# and language is one of the parsers supported by doxygen: IDL, Java,
+# Javascript, CSharp, C, C++, D, PHP, Objective-C, Python, Fortran, VHDL, C,
+# C++. For instance to make doxygen treat .inc files as Fortran files (default
+# is PHP), and .f files as C (default is Fortran), use: inc=Fortran f=C. Note
+# that for custom extensions you also need to set FILE_PATTERNS otherwise the
 # files are not read by doxygen.
 
-EXTENSION_MAPPING      = 
+EXTENSION_MAPPING      =
 
-# If MARKDOWN_SUPPORT is enabled (the default) then doxygen pre-processes all 
-# comments according to the Markdown format, which allows for more readable 
-# documentation. See http://daringfireball.net/projects/markdown/ for details. 
-# The output of markdown processing is further processed by doxygen, so you 
-# can mix doxygen, HTML, and XML commands with Markdown formatting. 
+# If MARKDOWN_SUPPORT is enabled (the default) then doxygen pre-processes all
+# comments according to the Markdown format, which allows for more readable
+# documentation. See http://daringfireball.net/projects/markdown/ for details.
+# The output of markdown processing is further processed by doxygen, so you
+# can mix doxygen, HTML, and XML commands with Markdown formatting.
 # Disable only in case of backward compatibilities issues.
 
 MARKDOWN_SUPPORT       = YES
 
-# When enabled doxygen tries to link words that correspond to documented classes, 
-# or namespaces to their corresponding documentation. Such a link can be 
-# prevented in individual cases by by putting a % sign in front of the word or 
+# When enabled doxygen tries to link words that correspond to documented classes,
+# or namespaces to their corresponding documentation. Such a link can be
+# prevented in individual cases by by putting a % sign in front of the word or
 # globally by setting AUTOLINK_SUPPORT to NO.
 
 AUTOLINK_SUPPORT       = YES
 
-# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want 
-# to include (a tag file for) the STL sources as input, then you should 
-# set this tag to YES in order to let doxygen match functions declarations and 
-# definitions whose arguments contain STL classes (e.g. func(std::string); v.s. 
-# func(std::string) {}). This also makes the inheritance and collaboration 
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want
+# to include (a tag file for) the STL sources as input, then you should
+# set this tag to YES in order to let doxygen match functions declarations and
+# definitions whose arguments contain STL classes (e.g. func(std::string); v.s.
+# func(std::string) {}). This also makes the inheritance and collaboration
 # diagrams that involve STL classes more complete and accurate.
 
 BUILTIN_STL_SUPPORT    = NO
 
-# If you use Microsoft's C++/CLI language, you should set this option to YES to 
+# If you use Microsoft's C++/CLI language, you should set this option to YES to
 # enable parsing support.
 
 CPP_CLI_SUPPORT        = NO
 
-# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only. 
-# Doxygen will parse them like normal C++ but will assume all classes use public 
+# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only.
+# Doxygen will parse them like normal C++ but will assume all classes use public
 # instead of private inheritance when no explicit protection keyword is present.
 
 SIP_SUPPORT            = NO
 
-# For Microsoft's IDL there are propget and propput attributes to indicate 
-# getter and setter methods for a property. Setting this option to YES (the 
-# default) will make doxygen replace the get and set methods by a property in 
-# the documentation. This will only work if the methods are indeed getting or 
-# setting a simple type. If this is not the case, or you want to show the 
+# For Microsoft's IDL there are propget and propput attributes to indicate
+# getter and setter methods for a property. Setting this option to YES (the
+# default) will make doxygen replace the get and set methods by a property in
+# the documentation. This will only work if the methods are indeed getting or
+# setting a simple type. If this is not the case, or you want to show the
 # methods anyway, you should set this option to NO.
 
 IDL_PROPERTY_SUPPORT   = YES
 
-# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
-# tag is set to YES, then doxygen will reuse the documentation of the first 
-# member in the group (if any) for the other members of the group. By default 
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES, then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
 # all members of a group must be documented explicitly.
 
 DISTRIBUTE_GROUP_DOC   = NO
 
-# Set the SUBGROUPING tag to YES (the default) to allow class member groups of 
-# the same type (for instance a group of public functions) to be put as a 
-# subgroup of that type (e.g. under the Public Functions section). Set it to 
-# NO to prevent subgrouping. Alternatively, this can be done per class using 
+# Set the SUBGROUPING tag to YES (the default) to allow class member groups of
+# the same type (for instance a group of public functions) to be put as a
+# subgroup of that type (e.g. under the Public Functions section). Set it to
+# NO to prevent subgrouping. Alternatively, this can be done per class using
 # the \nosubgrouping command.
 
 SUBGROUPING            = YES
 
-# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and 
-# unions are shown inside the group in which they are included (e.g. using 
-# @ingroup) instead of on a separate page (for HTML and Man pages) or 
+# When the INLINE_GROUPED_CLASSES tag is set to YES, classes, structs and
+# unions are shown inside the group in which they are included (e.g. using
+# @ingroup) instead of on a separate page (for HTML and Man pages) or
 # section (for LaTeX and RTF).
 
 INLINE_GROUPED_CLASSES = NO
 
-# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and 
-# unions with only public data fields will be shown inline in the documentation 
-# of the scope in which they are defined (i.e. file, namespace, or group 
-# documentation), provided this scope is documented. If set to NO (the default), 
-# structs, classes, and unions are shown on a separate page (for HTML and Man 
+# When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and
+# unions with only public data fields will be shown inline in the documentation
+# of the scope in which they are defined (i.e. file, namespace, or group
+# documentation), provided this scope is documented. If set to NO (the default),
+# structs, classes, and unions are shown on a separate page (for HTML and Man
 # pages) or section (for LaTeX and RTF).
 
 INLINE_SIMPLE_STRUCTS  = NO
 
-# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum 
-# is documented as struct, union, or enum with the name of the typedef. So 
-# typedef struct TypeS {} TypeT, will appear in the documentation as a struct 
-# with name TypeT. When disabled the typedef will appear as a member of a file, 
-# namespace, or class. And the struct will be named TypeS. This can typically 
-# be useful for C code in case the coding convention dictates that all compound 
+# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum
+# is documented as struct, union, or enum with the name of the typedef. So
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct
+# with name TypeT. When disabled the typedef will appear as a member of a file,
+# namespace, or class. And the struct will be named TypeS. This can typically
+# be useful for C code in case the coding convention dictates that all compound
 # types are typedef'ed and only the typedef is referenced, never the tag name.
 
 TYPEDEF_HIDES_STRUCT   = NO
 
-# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to 
-# determine which symbols to keep in memory and which to flush to disk. 
-# When the cache is full, less often used symbols will be written to disk. 
-# For small to medium size projects (<1000 input files) the default value is 
-# probably good enough. For larger projects a too small cache size can cause 
-# doxygen to be busy swapping symbols to and from disk most of the time 
-# causing a significant performance penalty. 
-# If the system has enough physical memory increasing the cache will improve the 
-# performance by keeping more symbols in memory. Note that the value works on 
-# a logarithmic scale so increasing the size by one will roughly double the 
-# memory usage. The cache size is given by this formula: 
-# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0, 
+# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to
+# determine which symbols to keep in memory and which to flush to disk.
+# When the cache is full, less often used symbols will be written to disk.
+# For small to medium size projects (<1000 input files) the default value is
+# probably good enough. For larger projects a too small cache size can cause
+# doxygen to be busy swapping symbols to and from disk most of the time
+# causing a significant performance penalty.
+# If the system has enough physical memory increasing the cache will improve the
+# performance by keeping more symbols in memory. Note that the value works on
+# a logarithmic scale so increasing the size by one will roughly double the
+# memory usage. The cache size is given by this formula:
+# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0,
 # corresponding to a cache size of 2^16 = 65536 symbols.
 
 SYMBOL_CACHE_SIZE      = 0
 
-# Similar to the SYMBOL_CACHE_SIZE the size of the symbol lookup cache can be 
-# set using LOOKUP_CACHE_SIZE. This cache is used to resolve symbols given 
-# their name and scope. Since this can be an expensive process and often the 
-# same symbol appear multiple times in the code, doxygen keeps a cache of 
-# pre-resolved symbols. If the cache is too small doxygen will become slower. 
-# If the cache is too large, memory is wasted. The cache size is given by this 
-# formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range is 0..9, the default is 0, 
+# Similar to the SYMBOL_CACHE_SIZE the size of the symbol lookup cache can be
+# set using LOOKUP_CACHE_SIZE. This cache is used to resolve symbols given
+# their name and scope. Since this can be an expensive process and often the
+# same symbol appear multiple times in the code, doxygen keeps a cache of
+# pre-resolved symbols. If the cache is too small doxygen will become slower.
+# If the cache is too large, memory is wasted. The cache size is given by this
+# formula: 2^(16+LOOKUP_CACHE_SIZE). The valid range is 0..9, the default is 0,
 # corresponding to a cache size of 2^16 = 65536 symbols.
 
 LOOKUP_CACHE_SIZE      = 0
@@ -370,329 +370,329 @@
 # Build related configuration options
 #---------------------------------------------------------------------------
 
-# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in 
-# documentation are documented, even if no documentation was available. 
-# Private class members and static file members will be hidden unless 
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
+# documentation are documented, even if no documentation was available.
+# Private class members and static file members will be hidden unless
 # the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
 
 EXTRACT_ALL            = YES
 
-# If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class
 # will be included in the documentation.
 
 EXTRACT_PRIVATE        = NO
 
-# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal 
+# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal
 # scope will be included in the documentation.
 
 EXTRACT_PACKAGE        = NO
 
-# If the EXTRACT_STATIC tag is set to YES all static members of a file 
+# If the EXTRACT_STATIC tag is set to YES all static members of a file
 # will be included in the documentation.
 
 EXTRACT_STATIC         = NO
 
-# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) 
-# defined locally in source files will be included in the documentation. 
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs)
+# defined locally in source files will be included in the documentation.
 # If set to NO only classes defined in header files are included.
 
 EXTRACT_LOCAL_CLASSES  = YES
 
-# This flag is only useful for Objective-C code. When set to YES local 
-# methods, which are defined in the implementation section but not in 
-# the interface are included in the documentation. 
+# This flag is only useful for Objective-C code. When set to YES local
+# methods, which are defined in the implementation section but not in
+# the interface are included in the documentation.
 # If set to NO (the default) only methods in the interface are included.
 
 EXTRACT_LOCAL_METHODS  = NO
 
-# If this flag is set to YES, the members of anonymous namespaces will be 
-# extracted and appear in the documentation as a namespace called 
-# 'anonymous_namespace{file}', where file will be replaced with the base 
-# name of the file that contains the anonymous namespace. By default 
+# If this flag is set to YES, the members of anonymous namespaces will be
+# extracted and appear in the documentation as a namespace called
+# 'anonymous_namespace{file}', where file will be replaced with the base
+# name of the file that contains the anonymous namespace. By default
 # anonymous namespaces are hidden.
 
 EXTRACT_ANON_NSPACES   = NO
 
-# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
-# undocumented members of documented classes, files or namespaces. 
-# If set to NO (the default) these members will be included in the 
-# various overviews, but no documentation section is generated. 
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all
+# undocumented members of documented classes, files or namespaces.
+# If set to NO (the default) these members will be included in the
+# various overviews, but no documentation section is generated.
 # This option has no effect if EXTRACT_ALL is enabled.
 
 HIDE_UNDOC_MEMBERS     = NO
 
-# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all 
-# undocumented classes that are normally visible in the class hierarchy. 
-# If set to NO (the default) these classes will be included in the various 
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy.
+# If set to NO (the default) these classes will be included in the various
 # overviews. This option has no effect if EXTRACT_ALL is enabled.
 
 HIDE_UNDOC_CLASSES     = NO
 
-# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all 
-# friend (class|struct|union) declarations. 
-# If set to NO (the default) these declarations will be included in the 
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all
+# friend (class|struct|union) declarations.
+# If set to NO (the default) these declarations will be included in the
 # documentation.
 
 HIDE_FRIEND_COMPOUNDS  = NO
 
-# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any 
-# documentation blocks found inside the body of a function. 
-# If set to NO (the default) these blocks will be appended to the 
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any
+# documentation blocks found inside the body of a function.
+# If set to NO (the default) these blocks will be appended to the
 # function's detailed documentation block.
 
 HIDE_IN_BODY_DOCS      = NO
 
-# The INTERNAL_DOCS tag determines if documentation 
-# that is typed after a \internal command is included. If the tag is set 
-# to NO (the default) then the documentation will be excluded. 
+# The INTERNAL_DOCS tag determines if documentation
+# that is typed after a \internal command is included. If the tag is set
+# to NO (the default) then the documentation will be excluded.
 # Set it to YES to include the internal documentation.
 
 INTERNAL_DOCS          = NO
 
-# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate 
-# file names in lower-case letters. If set to YES upper-case letters are also 
-# allowed. This is useful if you have classes or files whose names only differ 
-# in case and if your file system supports case sensitive file names. Windows 
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate
+# file names in lower-case letters. If set to YES upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
 # and Mac users are advised to set this option to NO.
 
 CASE_SENSE_NAMES       = NO
 
-# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen 
-# will show members with their full class and namespace scopes in the 
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen
+# will show members with their full class and namespace scopes in the
 # documentation. If set to YES the scope will be hidden.
 
 HIDE_SCOPE_NAMES       = YES
 
-# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen 
-# will put a list of the files that are included by a file in the documentation 
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen
+# will put a list of the files that are included by a file in the documentation
 # of that file.
 
 SHOW_INCLUDE_FILES     = YES
 
-# If the FORCE_LOCAL_INCLUDES tag is set to YES then Doxygen 
-# will list include files with double quotes in the documentation 
+# If the FORCE_LOCAL_INCLUDES tag is set to YES then Doxygen
+# will list include files with double quotes in the documentation
 # rather than with sharp brackets.
 
 FORCE_LOCAL_INCLUDES   = NO
 
-# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] 
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline]
 # is inserted in the documentation for inline members.
 
 INLINE_INFO            = YES
 
-# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen 
-# will sort the (detailed) documentation of file and class members 
-# alphabetically by member name. If set to NO the members will appear in 
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen
+# will sort the (detailed) documentation of file and class members
+# alphabetically by member name. If set to NO the members will appear in
 # declaration order.
 
 SORT_MEMBER_DOCS       = YES
 
-# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the 
-# brief documentation of file, namespace and class members alphabetically 
-# by member name. If set to NO (the default) the members will appear in 
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
+# brief documentation of file, namespace and class members alphabetically
+# by member name. If set to NO (the default) the members will appear in
 # declaration order.
 
 SORT_BRIEF_DOCS        = NO
 
-# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen 
-# will sort the (brief and detailed) documentation of class members so that 
-# constructors and destructors are listed first. If set to NO (the default) 
-# the constructors will appear in the respective orders defined by 
-# SORT_MEMBER_DOCS and SORT_BRIEF_DOCS. 
-# This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO 
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen
+# will sort the (brief and detailed) documentation of class members so that
+# constructors and destructors are listed first. If set to NO (the default)
+# the constructors will appear in the respective orders defined by
+# SORT_MEMBER_DOCS and SORT_BRIEF_DOCS.
+# This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO
 # and ignored for detailed docs if SORT_MEMBER_DOCS is set to NO.
 
 SORT_MEMBERS_CTORS_1ST = NO
 
-# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the 
-# hierarchy of group names into alphabetical order. If set to NO (the default) 
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the
+# hierarchy of group names into alphabetical order. If set to NO (the default)
 # the group names will appear in their defined order.
 
 SORT_GROUP_NAMES       = NO
 
-# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be 
-# sorted by fully-qualified names, including namespaces. If set to 
-# NO (the default), the class list will be sorted only by class name, 
-# not including the namespace part. 
-# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES. 
-# Note: This option applies only to the class list, not to the 
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
+# sorted by fully-qualified names, including namespaces. If set to
+# NO (the default), the class list will be sorted only by class name,
+# not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the
 # alphabetical list.
 
 SORT_BY_SCOPE_NAME     = NO
 
-# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to 
-# do proper type resolution of all parameters of a function it will reject a 
-# match between the prototype and the implementation of a member function even 
-# if there is only one candidate or it is obvious which candidate to choose 
-# by doing a simple string match. By disabling STRICT_PROTO_MATCHING doxygen 
+# If the STRICT_PROTO_MATCHING option is enabled and doxygen fails to
+# do proper type resolution of all parameters of a function it will reject a
+# match between the prototype and the implementation of a member function even
+# if there is only one candidate or it is obvious which candidate to choose
+# by doing a simple string match. By disabling STRICT_PROTO_MATCHING doxygen
 # will still accept a match between prototype and implementation in such cases.
 
 STRICT_PROTO_MATCHING  = NO
 
-# The GENERATE_TODOLIST tag can be used to enable (YES) or 
-# disable (NO) the todo list. This list is created by putting \todo 
+# The GENERATE_TODOLIST tag can be used to enable (YES) or
+# disable (NO) the todo list. This list is created by putting \todo
 # commands in the documentation.
 
 GENERATE_TODOLIST      = YES
 
-# The GENERATE_TESTLIST tag can be used to enable (YES) or 
-# disable (NO) the test list. This list is created by putting \test 
+# The GENERATE_TESTLIST tag can be used to enable (YES) or
+# disable (NO) the test list. This list is created by putting \test
 # commands in the documentation.
 
 GENERATE_TESTLIST      = YES
 
-# The GENERATE_BUGLIST tag can be used to enable (YES) or 
-# disable (NO) the bug list. This list is created by putting \bug 
+# The GENERATE_BUGLIST tag can be used to enable (YES) or
+# disable (NO) the bug list. This list is created by putting \bug
 # commands in the documentation.
 
 GENERATE_BUGLIST       = YES
 
-# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or 
-# disable (NO) the deprecated list. This list is created by putting 
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or
+# disable (NO) the deprecated list. This list is created by putting
 # \deprecated commands in the documentation.
 
 GENERATE_DEPRECATEDLIST= YES
 
-# The ENABLED_SECTIONS tag can be used to enable conditional 
-# documentation sections, marked by \if section-label ... \endif 
+# The ENABLED_SECTIONS tag can be used to enable conditional
+# documentation sections, marked by \if section-label ... \endif
 # and \cond section-label ... \endcond blocks.
 
-ENABLED_SECTIONS       = 
+ENABLED_SECTIONS       =
 
-# The MAX_INITIALIZER_LINES tag determines the maximum number of lines 
-# the initial value of a variable or macro consists of for it to appear in 
-# the documentation. If the initializer consists of more lines than specified 
-# here it will be hidden. Use a value of 0 to hide initializers completely. 
-# The appearance of the initializer of individual variables and macros in the 
-# documentation can be controlled using \showinitializer or \hideinitializer 
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines
+# the initial value of a variable or macro consists of for it to appear in
+# the documentation. If the initializer consists of more lines than specified
+# here it will be hidden. Use a value of 0 to hide initializers completely.
+# The appearance of the initializer of individual variables and macros in the
+# documentation can be controlled using \showinitializer or \hideinitializer
 # command in the documentation regardless of this setting.
 
 MAX_INITIALIZER_LINES  = 26
 
-# Set the SHOW_USED_FILES tag to NO to disable the list of files generated 
-# at the bottom of the documentation of classes and structs. If set to YES the 
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated
+# at the bottom of the documentation of classes and structs. If set to YES the
 # list will mention the files that were used to generate the documentation.
 
 SHOW_USED_FILES        = YES
 
-# Set the SHOW_FILES tag to NO to disable the generation of the Files page. 
-# This will remove the Files entry from the Quick Index and from the 
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page.
+# This will remove the Files entry from the Quick Index and from the
 # Folder Tree View (if specified). The default is YES.
 
 SHOW_FILES             = YES
 
-# Set the SHOW_NAMESPACES tag to NO to disable the generation of the 
-# Namespaces page.  This will remove the Namespaces entry from the Quick Index 
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the
+# Namespaces page.  This will remove the Namespaces entry from the Quick Index
 # and from the Folder Tree View (if specified). The default is YES.
 
 SHOW_NAMESPACES        = YES
 
-# The FILE_VERSION_FILTER tag can be used to specify a program or script that 
-# doxygen should invoke to get the current version for each file (typically from 
-# the version control system). Doxygen will invoke the program by executing (via 
-# popen()) the command <command> <input-file>, where <command> is the value of 
-# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file 
-# provided by doxygen. Whatever the program writes to standard output 
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from
+# the version control system). Doxygen will invoke the program by executing (via
+# popen()) the command <command> <input-file>, where <command> is the value of
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file
+# provided by doxygen. Whatever the program writes to standard output
 # is used as the file version. See the manual for examples.
 
-FILE_VERSION_FILTER    = 
+FILE_VERSION_FILTER    =
 
-# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed 
-# by doxygen. The layout file controls the global structure of the generated 
-# output files in an output format independent way. To create the layout file 
-# that represents doxygen's defaults, run doxygen with the -l option. 
-# You can optionally specify a file name after the option, if omitted 
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
+# by doxygen. The layout file controls the global structure of the generated
+# output files in an output format independent way. To create the layout file
+# that represents doxygen's defaults, run doxygen with the -l option.
+# You can optionally specify a file name after the option, if omitted
 # DoxygenLayout.xml will be used as the name of the layout file.
 
-LAYOUT_FILE            = 
+LAYOUT_FILE            =
 
-# The CITE_BIB_FILES tag can be used to specify one or more bib files 
-# containing the references data. This must be a list of .bib files. The 
-# .bib extension is automatically appended if omitted. Using this command 
-# requires the bibtex tool to be installed. See also 
-# http://en.wikipedia.org/wiki/BibTeX for more info. For LaTeX the style 
-# of the bibliography can be controlled using LATEX_BIB_STYLE. To use this 
-# feature you need bibtex and perl available in the search path. Do not use 
+# The CITE_BIB_FILES tag can be used to specify one or more bib files
+# containing the references data. This must be a list of .bib files. The
+# .bib extension is automatically appended if omitted. Using this command
+# requires the bibtex tool to be installed. See also
+# http://en.wikipedia.org/wiki/BibTeX for more info. For LaTeX the style
+# of the bibliography can be controlled using LATEX_BIB_STYLE. To use this
+# feature you need bibtex and perl available in the search path. Do not use
 # file names with spaces, bibtex cannot handle them.
 
-CITE_BIB_FILES         = 
+CITE_BIB_FILES         =
 
 #---------------------------------------------------------------------------
 # configuration options related to warning and progress messages
 #---------------------------------------------------------------------------
 
-# The QUIET tag can be used to turn on/off the messages that are generated 
+# The QUIET tag can be used to turn on/off the messages that are generated
 # by doxygen. Possible values are YES and NO. If left blank NO is used.
 
 QUIET                  = NO
 
-# The WARNINGS tag can be used to turn on/off the warning messages that are 
-# generated by doxygen. Possible values are YES and NO. If left blank 
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated by doxygen. Possible values are YES and NO. If left blank
 # NO is used.
 
 WARNINGS               = YES
 
-# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings 
-# for undocumented members. If EXTRACT_ALL is set to YES then this flag will 
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will
 # automatically be disabled.
 
 WARN_IF_UNDOCUMENTED   = YES
 
-# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for 
-# potential errors in the documentation, such as not documenting some 
-# parameters in a documented function, or documenting parameters that 
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some
+# parameters in a documented function, or documenting parameters that
 # don't exist or using markup commands wrongly.
 
 WARN_IF_DOC_ERROR      = YES
 
-# The WARN_NO_PARAMDOC option can be enabled to get warnings for 
-# functions that are documented, but have no documentation for their parameters 
-# or return value. If set to NO (the default) doxygen will only warn about 
-# wrong or incomplete parameter documentation, but not about the absence of 
+# The WARN_NO_PARAMDOC option can be enabled to get warnings for
+# functions that are documented, but have no documentation for their parameters
+# or return value. If set to NO (the default) doxygen will only warn about
+# wrong or incomplete parameter documentation, but not about the absence of
 # documentation.
 
 WARN_NO_PARAMDOC       = NO
 
-# The WARN_FORMAT tag determines the format of the warning messages that 
-# doxygen can produce. The string should contain the $file, $line, and $text 
-# tags, which will be replaced by the file and line number from which the 
-# warning originated and the warning text. Optionally the format may contain 
-# $version, which will be replaced by the version of the file (if it could 
+# The WARN_FORMAT tag determines the format of the warning messages that
+# doxygen can produce. The string should contain the $file, $line, and $text
+# tags, which will be replaced by the file and line number from which the
+# warning originated and the warning text. Optionally the format may contain
+# $version, which will be replaced by the version of the file (if it could
 # be obtained via FILE_VERSION_FILTER)
 
 WARN_FORMAT            = "$file:$line: $text"
 
-# The WARN_LOGFILE tag can be used to specify a file to which warning 
-# and error messages should be written. If left blank the output is written 
+# The WARN_LOGFILE tag can be used to specify a file to which warning
+# and error messages should be written. If left blank the output is written
 # to stderr.
 
-WARN_LOGFILE           = 
+WARN_LOGFILE           =
 
 #---------------------------------------------------------------------------
 # configuration options related to the input files
 #---------------------------------------------------------------------------
 
-# The INPUT tag can be used to specify the files and/or directories that contain 
-# documented source files. You may enter file names like "myfile.cpp" or 
-# directories like "/usr/src/myproject". Separate the files or directories 
+# The INPUT tag can be used to specify the files and/or directories that contain
+# documented source files. You may enter file names like "myfile.cpp" or
+# directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
 INPUT                  = ../include/android ../../av/include/ndk ../../av/include/camera/ndk
 
-# This tag can be used to specify the character encoding of the source files 
-# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is 
-# also the default input encoding. Doxygen uses libiconv (or the iconv built 
-# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for 
+# This tag can be used to specify the character encoding of the source files
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
+# also the default input encoding. Doxygen uses libiconv (or the iconv built
+# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for
 # the list of possible encodings.
 
 INPUT_ENCODING         = UTF-8
 
-# If the value of the INPUT tag contains directories, you can use the 
-# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
-# and *.h) to filter out the source-files in the directories. If left 
-# blank the following patterns are tested: 
-# *.c *.cc *.cxx *.cpp *.c++ *.d *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh 
-# *.hxx *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.dox *.py 
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank the following patterns are tested:
+# *.c *.cc *.cxx *.cpp *.c++ *.d *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh
+# *.hxx *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.dox *.py
 # *.f90 *.f *.for *.vhd *.vhdl
 
 FILE_PATTERNS          = *.c \
@@ -730,159 +730,159 @@
                          *.vhd \
                          *.vhdl
 
-# The RECURSIVE tag can be used to turn specify whether or not subdirectories 
-# should be searched for input files as well. Possible values are YES and NO. 
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories
+# should be searched for input files as well. Possible values are YES and NO.
 # If left blank NO is used.
 
 RECURSIVE              = YES
 
-# The EXCLUDE tag can be used to specify files and/or directories that should be 
-# excluded from the INPUT source files. This way you can easily exclude a 
-# subdirectory from a directory tree whose root is specified with the INPUT tag. 
-# Note that relative paths are relative to the directory from which doxygen is 
+# The EXCLUDE tag can be used to specify files and/or directories that should be
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+# Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                = 
+EXCLUDE                =
 
-# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or 
-# directories that are symbolic links (a Unix file system feature) are excluded 
+# The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
+# directories that are symbolic links (a Unix file system feature) are excluded
 # from the input.
 
 EXCLUDE_SYMLINKS       = NO
 
-# If the value of the INPUT tag contains directories, you can use the 
-# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude 
-# certain files from those directories. Note that the wildcards are matched 
-# against the file with absolute path, so to exclude all test directories 
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories. Note that the wildcards are matched
+# against the file with absolute path, so to exclude all test directories
 # for example use the pattern */test/*
 
-EXCLUDE_PATTERNS       = 
+EXCLUDE_PATTERNS       =
 
-# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names 
-# (namespaces, classes, functions, etc.) that should be excluded from the 
-# output. The symbol name can be a fully qualified name, a word, or if the 
-# wildcard * is used, a substring. Examples: ANamespace, AClass, 
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
+# (namespaces, classes, functions, etc.) that should be excluded from the
+# output. The symbol name can be a fully qualified name, a word, or if the
+# wildcard * is used, a substring. Examples: ANamespace, AClass,
 # AClass::ANamespace, ANamespace::*Test
 
-EXCLUDE_SYMBOLS        = 
+EXCLUDE_SYMBOLS        =
 
-# The EXAMPLE_PATH tag can be used to specify one or more files or 
-# directories that contain example code fragments that are included (see 
+# The EXAMPLE_PATH tag can be used to specify one or more files or
+# directories that contain example code fragments that are included (see
 # the \include command).
 
-EXAMPLE_PATH           = 
+EXAMPLE_PATH           =
 
-# If the value of the EXAMPLE_PATH tag contains directories, you can use the 
-# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
-# and *.h) to filter out the source-files in the directories. If left 
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
 # blank all files are included.
 
 EXAMPLE_PATTERNS       = *
 
-# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be 
-# searched for input files to be used with the \include or \dontinclude 
-# commands irrespective of the value of the RECURSIVE tag. 
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude
+# commands irrespective of the value of the RECURSIVE tag.
 # Possible values are YES and NO. If left blank NO is used.
 
 EXAMPLE_RECURSIVE      = NO
 
-# The IMAGE_PATH tag can be used to specify one or more files or 
-# directories that contain image that are included in the documentation (see 
+# The IMAGE_PATH tag can be used to specify one or more files or
+# directories that contain image that are included in the documentation (see
 # the \image command).
 
-IMAGE_PATH             = 
+IMAGE_PATH             =
 
-# The INPUT_FILTER tag can be used to specify a program that doxygen should 
-# invoke to filter for each input file. Doxygen will invoke the filter program 
-# by executing (via popen()) the command <filter> <input-file>, where <filter> 
-# is the value of the INPUT_FILTER tag, and <input-file> is the name of an 
-# input file. Doxygen will then use the output that the filter program writes 
-# to standard output.  If FILTER_PATTERNS is specified, this tag will be 
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command <filter> <input-file>, where <filter>
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an
+# input file. Doxygen will then use the output that the filter program writes
+# to standard output.  If FILTER_PATTERNS is specified, this tag will be
 # ignored.
 
-INPUT_FILTER           = 
+INPUT_FILTER           =
 
-# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern 
-# basis.  Doxygen will compare the file name with each pattern and apply the 
-# filter if there is a match.  The filters are a list of the form: 
-# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further 
-# info on how filters are used. If FILTER_PATTERNS is empty or if 
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis.  Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match.  The filters are a list of the form:
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further
+# info on how filters are used. If FILTER_PATTERNS is empty or if
 # non of the patterns match the file name, INPUT_FILTER is applied.
 
-FILTER_PATTERNS        = 
+FILTER_PATTERNS        =
 
-# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using 
-# INPUT_FILTER) will be used to filter the input files when producing source 
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will be used to filter the input files when producing source
 # files to browse (i.e. when SOURCE_BROWSER is set to YES).
 
 FILTER_SOURCE_FILES    = NO
 
-# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file 
-# pattern. A pattern will override the setting for FILTER_PATTERN (if any) 
-# and it is also possible to disable source filtering for a specific pattern 
-# using *.ext= (so without naming a filter). This option only has effect when 
+# The FILTER_SOURCE_PATTERNS tag can be used to specify source filters per file
+# pattern. A pattern will override the setting for FILTER_PATTERN (if any)
+# and it is also possible to disable source filtering for a specific pattern
+# using *.ext= (so without naming a filter). This option only has effect when
 # FILTER_SOURCE_FILES is enabled.
 
-FILTER_SOURCE_PATTERNS = 
+FILTER_SOURCE_PATTERNS =
 
-# If the USE_MD_FILE_AS_MAINPAGE tag refers to the name of a markdown file that 
-# is part of the input, its contents will be placed on the main page (index.html). 
-# This can be useful if you have a project on for instance GitHub and want reuse 
+# If the USE_MD_FILE_AS_MAINPAGE tag refers to the name of a markdown file that
+# is part of the input, its contents will be placed on the main page (index.html).
+# This can be useful if you have a project on for instance GitHub and want reuse
 # the introduction page also for the doxygen output.
 
-USE_MDFILE_AS_MAINPAGE = 
+USE_MDFILE_AS_MAINPAGE =
 
 #---------------------------------------------------------------------------
 # configuration options related to source browsing
 #---------------------------------------------------------------------------
 
-# If the SOURCE_BROWSER tag is set to YES then a list of source files will 
-# be generated. Documented entities will be cross-referenced with these sources. 
-# Note: To get rid of all source code in the generated output, make sure also 
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will
+# be generated. Documented entities will be cross-referenced with these sources.
+# Note: To get rid of all source code in the generated output, make sure also
 # VERBATIM_HEADERS is set to NO.
 
 SOURCE_BROWSER         = NO
 
-# Setting the INLINE_SOURCES tag to YES will include the body 
+# Setting the INLINE_SOURCES tag to YES will include the body
 # of functions and classes directly in the documentation.
 
 INLINE_SOURCES         = NO
 
-# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct 
-# doxygen to hide any special comment blocks from generated source code 
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct
+# doxygen to hide any special comment blocks from generated source code
 # fragments. Normal C, C++ and Fortran comments will always remain visible.
 
 STRIP_CODE_COMMENTS    = NO
 
-# If the REFERENCED_BY_RELATION tag is set to YES 
-# then for each documented function all documented 
+# If the REFERENCED_BY_RELATION tag is set to YES
+# then for each documented function all documented
 # functions referencing it will be listed.
 
 REFERENCED_BY_RELATION = NO
 
-# If the REFERENCES_RELATION tag is set to YES 
-# then for each documented function all documented entities 
+# If the REFERENCES_RELATION tag is set to YES
+# then for each documented function all documented entities
 # called/used by that function will be listed.
 
 REFERENCES_RELATION    = NO
 
-# If the REFERENCES_LINK_SOURCE tag is set to YES (the default) 
-# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from 
-# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will 
+# If the REFERENCES_LINK_SOURCE tag is set to YES (the default)
+# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from
+# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will
 # link to the source code.  Otherwise they will link to the documentation.
 
 REFERENCES_LINK_SOURCE = YES
 
-# If the USE_HTAGS tag is set to YES then the references to source code 
-# will point to the HTML generated by the htags(1) tool instead of doxygen 
-# built-in source browser. The htags tool is part of GNU's global source 
-# tagging system (see http://www.gnu.org/software/global/global.html). You 
+# If the USE_HTAGS tag is set to YES then the references to source code
+# will point to the HTML generated by the htags(1) tool instead of doxygen
+# built-in source browser. The htags tool is part of GNU's global source
+# tagging system (see http://www.gnu.org/software/global/global.html). You
 # will need version 4.8.6 or higher.
 
 USE_HTAGS              = NO
 
-# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen 
-# will generate a verbatim copy of the header file for each class for 
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen
+# will generate a verbatim copy of the header file for each class for
 # which an include is specified. Set to NO to disable this.
 
 VERBATIM_HEADERS       = NO
@@ -891,170 +891,170 @@
 # configuration options related to the alphabetical class index
 #---------------------------------------------------------------------------
 
-# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index 
-# of all compounds will be generated. Enable this if the project 
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index
+# of all compounds will be generated. Enable this if the project
 # contains a lot of classes, structs, unions or interfaces.
 
 ALPHABETICAL_INDEX     = NO
 
-# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then 
-# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns 
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
 # in which this list will be split (can be a number in the range [1..20])
 
 COLS_IN_ALPHA_INDEX    = 5
 
-# In case all classes in a project start with a common prefix, all 
-# classes will be put under the same header in the alphabetical index. 
-# The IGNORE_PREFIX tag can be used to specify one or more prefixes that 
+# In case all classes in a project start with a common prefix, all
+# classes will be put under the same header in the alphabetical index.
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that
 # should be ignored while generating the index headers.
 
-IGNORE_PREFIX          = 
+IGNORE_PREFIX          =
 
 #---------------------------------------------------------------------------
 # configuration options related to the HTML output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_HTML tag is set to YES (the default) Doxygen will 
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will
 # generate HTML output.
 
 GENERATE_HTML          = YES
 
-# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `html' will be used as the default path.
 
 HTML_OUTPUT            = $(HTML_OUTPUT)
 
-# The HTML_FILE_EXTENSION tag can be used to specify the file extension for 
-# each generated HTML page (for example: .htm,.php,.asp). If it is left blank 
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank
 # doxygen will generate files with .html extension.
 
 HTML_FILE_EXTENSION    = .html
 
-# The HTML_HEADER tag can be used to specify a personal HTML header for 
-# each generated HTML page. If it is left blank doxygen will generate a 
-# standard header. Note that when using a custom header you are responsible  
-# for the proper inclusion of any scripts and style sheets that doxygen 
-# needs, which is dependent on the configuration options used. 
-# It is advised to generate a default header using "doxygen -w html 
-# header.html footer.html stylesheet.css YourConfigFile" and then modify 
-# that header. Note that the header is subject to change so you typically 
-# have to redo this when upgrading to a newer version of doxygen or when 
+# The HTML_HEADER tag can be used to specify a personal HTML header for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard header. Note that when using a custom header you are responsible
+# for the proper inclusion of any scripts and style sheets that doxygen
+# needs, which is dependent on the configuration options used.
+# It is advised to generate a default header using "doxygen -w html
+# header.html footer.html stylesheet.css YourConfigFile" and then modify
+# that header. Note that the header is subject to change so you typically
+# have to redo this when upgrading to a newer version of doxygen or when
 # changing the value of configuration settings such as GENERATE_TREEVIEW!
 
 HTML_HEADER            = $(HTML_HEADER)
 
-# The HTML_FOOTER tag can be used to specify a personal HTML footer for 
-# each generated HTML page. If it is left blank doxygen will generate a 
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for
+# each generated HTML page. If it is left blank doxygen will generate a
 # standard footer.
 
 HTML_FOOTER            = $(HTML_FOOTER)
 
-# The HTML_STYLESHEET tag can be used to specify a user-defined cascading 
-# style sheet that is used by each HTML page. It can be used to 
-# fine-tune the look of the HTML output. If left blank doxygen will 
-# generate a default style sheet. Note that it is recommended to use 
-# HTML_EXTRA_STYLESHEET instead of this one, as it is more robust and this 
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading
+# style sheet that is used by each HTML page. It can be used to
+# fine-tune the look of the HTML output. If left blank doxygen will
+# generate a default style sheet. Note that it is recommended to use
+# HTML_EXTRA_STYLESHEET instead of this one, as it is more robust and this
 # tag will in the future become obsolete.
 
-HTML_STYLESHEET        = 
+HTML_STYLESHEET        =
 
-# The HTML_EXTRA_STYLESHEET tag can be used to specify an additional 
-# user-defined cascading style sheet that is included after the standard 
-# style sheets created by doxygen. Using this option one can overrule 
-# certain style aspects. This is preferred over using HTML_STYLESHEET 
-# since it does not replace the standard style sheet and is therefor more 
-# robust against future updates. Doxygen will copy the style sheet file to 
+# The HTML_EXTRA_STYLESHEET tag can be used to specify an additional
+# user-defined cascading style sheet that is included after the standard
+# style sheets created by doxygen. Using this option one can overrule
+# certain style aspects. This is preferred over using HTML_STYLESHEET
+# since it does not replace the standard style sheet and is therefor more
+# robust against future updates. Doxygen will copy the style sheet file to
 # the output directory.
 
-HTML_EXTRA_STYLESHEET  = 
+HTML_EXTRA_STYLESHEET  =
 
-# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or 
-# other source files which should be copied to the HTML output directory. Note 
-# that these files will be copied to the base HTML output directory. Use the 
-# $relpath$ marker in the HTML_HEADER and/or HTML_FOOTER files to load these 
-# files. In the HTML_STYLESHEET file, use the file name only. Also note that 
+# The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
+# other source files which should be copied to the HTML output directory. Note
+# that these files will be copied to the base HTML output directory. Use the
+# $relpath$ marker in the HTML_HEADER and/or HTML_FOOTER files to load these
+# files. In the HTML_STYLESHEET file, use the file name only. Also note that
 # the files will be copied as-is; there are no commands or markers available.
 
-HTML_EXTRA_FILES       = 
+HTML_EXTRA_FILES       =
 
-# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. 
-# Doxygen will adjust the colors in the style sheet and background images 
-# according to this color. Hue is specified as an angle on a colorwheel, 
-# see http://en.wikipedia.org/wiki/Hue for more information. 
-# For instance the value 0 represents red, 60 is yellow, 120 is green, 
-# 180 is cyan, 240 is blue, 300 purple, and 360 is red again. 
+# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output.
+# Doxygen will adjust the colors in the style sheet and background images
+# according to this color. Hue is specified as an angle on a colorwheel,
+# see http://en.wikipedia.org/wiki/Hue for more information.
+# For instance the value 0 represents red, 60 is yellow, 120 is green,
+# 180 is cyan, 240 is blue, 300 purple, and 360 is red again.
 # The allowed range is 0 to 359.
 
 HTML_COLORSTYLE_HUE    = 220
 
-# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of 
-# the colors in the HTML output. For a value of 0 the output will use 
+# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of
+# the colors in the HTML output. For a value of 0 the output will use
 # grayscales only. A value of 255 will produce the most vivid colors.
 
 HTML_COLORSTYLE_SAT    = 0
 
-# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to 
-# the luminance component of the colors in the HTML output. Values below 
-# 100 gradually make the output lighter, whereas values above 100 make 
-# the output darker. The value divided by 100 is the actual gamma applied, 
-# so 80 represents a gamma of 0.8, The value 220 represents a gamma of 2.2, 
+# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to
+# the luminance component of the colors in the HTML output. Values below
+# 100 gradually make the output lighter, whereas values above 100 make
+# the output darker. The value divided by 100 is the actual gamma applied,
+# so 80 represents a gamma of 0.8, The value 220 represents a gamma of 2.2,
 # and 100 does not change the gamma.
 
 HTML_COLORSTYLE_GAMMA  = 80
 
-# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML 
-# page will contain the date and time when the page was generated. Setting 
+# If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
+# page will contain the date and time when the page was generated. Setting
 # this to NO can help when comparing the output of multiple runs.
 
 HTML_TIMESTAMP         = YES
 
-# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML 
-# documentation will contain sections that can be hidden and shown after the 
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
+# documentation will contain sections that can be hidden and shown after the
 # page has loaded.
 
 HTML_DYNAMIC_SECTIONS  = NO
 
-# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of 
-# entries shown in the various tree structured indices initially; the user 
-# can expand and collapse entries dynamically later on. Doxygen will expand 
-# the tree to such a level that at most the specified number of entries are 
-# visible (unless a fully collapsed tree already exceeds this amount). 
-# So setting the number of entries 1 will produce a full collapsed tree by 
-# default. 0 is a special value representing an infinite number of entries 
+# With HTML_INDEX_NUM_ENTRIES one can control the preferred number of
+# entries shown in the various tree structured indices initially; the user
+# can expand and collapse entries dynamically later on. Doxygen will expand
+# the tree to such a level that at most the specified number of entries are
+# visible (unless a fully collapsed tree already exceeds this amount).
+# So setting the number of entries 1 will produce a full collapsed tree by
+# default. 0 is a special value representing an infinite number of entries
 # and will result in a full expanded tree by default.
 
 HTML_INDEX_NUM_ENTRIES = 100
 
-# If the GENERATE_DOCSET tag is set to YES, additional index files 
-# will be generated that can be used as input for Apple's Xcode 3 
-# integrated development environment, introduced with OSX 10.5 (Leopard). 
-# To create a documentation set, doxygen will generate a Makefile in the 
-# HTML output directory. Running make will produce the docset in that 
-# directory and running "make install" will install the docset in 
-# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find 
-# it at startup. 
-# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html 
+# If the GENERATE_DOCSET tag is set to YES, additional index files
+# will be generated that can be used as input for Apple's Xcode 3
+# integrated development environment, introduced with OSX 10.5 (Leopard).
+# To create a documentation set, doxygen will generate a Makefile in the
+# HTML output directory. Running make will produce the docset in that
+# directory and running "make install" will install the docset in
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find
+# it at startup.
+# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
 # for more information.
 
 GENERATE_DOCSET        = NO
 
-# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the 
-# feed. A documentation feed provides an umbrella under which multiple 
-# documentation sets from a single provider (such as a company or product suite) 
+# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the
+# feed. A documentation feed provides an umbrella under which multiple
+# documentation sets from a single provider (such as a company or product suite)
 # can be grouped.
 
 DOCSET_FEEDNAME        = "Doxygen generated docs"
 
-# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that 
-# should uniquely identify the documentation set bundle. This should be a 
-# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen 
+# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that
+# should uniquely identify the documentation set bundle. This should be a
+# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen
 # will append .docset to the name.
 
 DOCSET_BUNDLE_ID       = org.doxygen.Project
 
-# When GENERATE_PUBLISHER_ID tag specifies a string that should uniquely 
-# identify the documentation publisher. This should be a reverse domain-name 
+# When GENERATE_PUBLISHER_ID tag specifies a string that should uniquely
+# identify the documentation publisher. This should be a reverse domain-name
 # style string, e.g. com.mycompany.MyDocSet.documentation.
 
 DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
@@ -1063,361 +1063,361 @@
 
 DOCSET_PUBLISHER_NAME  = Publisher
 
-# If the GENERATE_HTMLHELP tag is set to YES, additional index files 
-# will be generated that can be used as input for tools like the 
-# Microsoft HTML help workshop to generate a compiled HTML help file (.chm) 
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files
+# will be generated that can be used as input for tools like the
+# Microsoft HTML help workshop to generate a compiled HTML help file (.chm)
 # of the generated HTML documentation.
 
 GENERATE_HTMLHELP      = NO
 
-# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can 
-# be used to specify the file name of the resulting .chm file. You 
-# can add a path in front of the file if the result should not be 
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can
+# be used to specify the file name of the resulting .chm file. You
+# can add a path in front of the file if the result should not be
 # written to the html output directory.
 
-CHM_FILE               = 
+CHM_FILE               =
 
-# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can 
-# be used to specify the location (absolute path including file name) of 
-# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run 
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can
+# be used to specify the location (absolute path including file name) of
+# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run
 # the HTML help compiler on the generated index.hhp.
 
-HHC_LOCATION           = 
+HHC_LOCATION           =
 
-# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag 
-# controls if a separate .chi index file is generated (YES) or that 
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag
+# controls if a separate .chi index file is generated (YES) or that
 # it should be included in the master .chm file (NO).
 
 GENERATE_CHI           = NO
 
-# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING 
-# is used to encode HtmlHelp index (hhk), content (hhc) and project file 
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING
+# is used to encode HtmlHelp index (hhk), content (hhc) and project file
 # content.
 
-CHM_INDEX_ENCODING     = 
+CHM_INDEX_ENCODING     =
 
-# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag 
-# controls whether a binary table of contents is generated (YES) or a 
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag
+# controls whether a binary table of contents is generated (YES) or a
 # normal table of contents (NO) in the .chm file.
 
 BINARY_TOC             = NO
 
-# The TOC_EXPAND flag can be set to YES to add extra items for group members 
+# The TOC_EXPAND flag can be set to YES to add extra items for group members
 # to the contents of the HTML help documentation and to the tree view.
 
 TOC_EXPAND             = NO
 
-# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and 
-# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated 
-# that can be used as input for Qt's qhelpgenerator to generate a 
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
+# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated
+# that can be used as input for Qt's qhelpgenerator to generate a
 # Qt Compressed Help (.qch) of the generated HTML documentation.
 
 GENERATE_QHP           = NO
 
-# If the QHG_LOCATION tag is specified, the QCH_FILE tag can 
-# be used to specify the file name of the resulting .qch file. 
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can
+# be used to specify the file name of the resulting .qch file.
 # The path specified is relative to the HTML output folder.
 
-QCH_FILE               = 
+QCH_FILE               =
 
-# The QHP_NAMESPACE tag specifies the namespace to use when generating 
-# Qt Help Project output. For more information please see 
+# The QHP_NAMESPACE tag specifies the namespace to use when generating
+# Qt Help Project output. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#namespace
 
 QHP_NAMESPACE          = org.doxygen.Project
 
-# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating 
-# Qt Help Project output. For more information please see 
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating
+# Qt Help Project output. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#virtual-folders
 
 QHP_VIRTUAL_FOLDER     = doc
 
-# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to 
-# add. For more information please see 
+# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to
+# add. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#custom-filters
 
-QHP_CUST_FILTER_NAME   = 
+QHP_CUST_FILTER_NAME   =
 
-# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the 
-# custom filter to add. For more information please see 
-# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters"> 
+# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the
+# custom filter to add. For more information please see
+# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">
 # Qt Help Project / Custom Filters</a>.
 
-QHP_CUST_FILTER_ATTRS  = 
+QHP_CUST_FILTER_ATTRS  =
 
-# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this 
-# project's 
-# filter section matches. 
-# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes"> 
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
+# project's
+# filter section matches.
+# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">
 # Qt Help Project / Filter Attributes</a>.
 
-QHP_SECT_FILTER_ATTRS  = 
+QHP_SECT_FILTER_ATTRS  =
 
-# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can 
-# be used to specify the location of Qt's qhelpgenerator. 
-# If non-empty doxygen will try to run qhelpgenerator on the generated 
+# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can
+# be used to specify the location of Qt's qhelpgenerator.
+# If non-empty doxygen will try to run qhelpgenerator on the generated
 # .qhp file.
 
-QHG_LOCATION           = 
+QHG_LOCATION           =
 
-# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files  
-# will be generated, which together with the HTML files, form an Eclipse help 
-# plugin. To install this plugin and make it available under the help contents 
-# menu in Eclipse, the contents of the directory containing the HTML and XML 
-# files needs to be copied into the plugins directory of eclipse. The name of 
-# the directory within the plugins directory should be the same as 
-# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before 
+# If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files
+# will be generated, which together with the HTML files, form an Eclipse help
+# plugin. To install this plugin and make it available under the help contents
+# menu in Eclipse, the contents of the directory containing the HTML and XML
+# files needs to be copied into the plugins directory of eclipse. The name of
+# the directory within the plugins directory should be the same as
+# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before
 # the help appears.
 
 GENERATE_ECLIPSEHELP   = NO
 
-# A unique identifier for the eclipse help plugin. When installing the plugin 
-# the directory name containing the HTML and XML files should also have 
+# A unique identifier for the eclipse help plugin. When installing the plugin
+# the directory name containing the HTML and XML files should also have
 # this name.
 
 ECLIPSE_DOC_ID         = org.doxygen.Project
 
-# The DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs) 
-# at top of each HTML page. The value NO (the default) enables the index and 
-# the value YES disables it. Since the tabs have the same information as the 
-# navigation tree you can set this option to NO if you already set 
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index (tabs)
+# at top of each HTML page. The value NO (the default) enables the index and
+# the value YES disables it. Since the tabs have the same information as the
+# navigation tree you can set this option to NO if you already set
 # GENERATE_TREEVIEW to YES.
 
 DISABLE_INDEX          = YES
 
-# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index 
-# structure should be generated to display hierarchical information. 
-# If the tag value is set to YES, a side panel will be generated 
-# containing a tree-like index structure (just like the one that 
-# is generated for HTML Help). For this to work a browser that supports 
-# JavaScript, DHTML, CSS and frames is required (i.e. any modern browser). 
-# Windows users are probably better off using the HTML help feature. 
-# Since the tree basically has the same information as the tab index you 
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
+# structure should be generated to display hierarchical information.
+# If the tag value is set to YES, a side panel will be generated
+# containing a tree-like index structure (just like the one that
+# is generated for HTML Help). For this to work a browser that supports
+# JavaScript, DHTML, CSS and frames is required (i.e. any modern browser).
+# Windows users are probably better off using the HTML help feature.
+# Since the tree basically has the same information as the tab index you
 # could consider to set DISABLE_INDEX to NO when enabling this option.
 
 GENERATE_TREEVIEW      = NO
 
-# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values 
-# (range [0,1..20]) that doxygen will group on one line in the generated HTML 
-# documentation. Note that a value of 0 will completely suppress the enum 
+# The ENUM_VALUES_PER_LINE tag can be used to set the number of enum values
+# (range [0,1..20]) that doxygen will group on one line in the generated HTML
+# documentation. Note that a value of 0 will completely suppress the enum
 # values from appearing in the overview section.
 
 ENUM_VALUES_PER_LINE   = 4
 
-# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
-# used to set the initial width (in pixels) of the frame in which the tree 
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be
+# used to set the initial width (in pixels) of the frame in which the tree
 # is shown.
 
 TREEVIEW_WIDTH         = 250
 
-# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open 
+# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open
 # links to external symbols imported via tag files in a separate window.
 
 EXT_LINKS_IN_WINDOW    = NO
 
-# Use this tag to change the font size of Latex formulas included 
-# as images in the HTML documentation. The default is 10. Note that 
-# when you change the font size after a successful doxygen run you need 
-# to manually remove any form_*.png images from the HTML output directory 
+# Use this tag to change the font size of Latex formulas included
+# as images in the HTML documentation. The default is 10. Note that
+# when you change the font size after a successful doxygen run you need
+# to manually remove any form_*.png images from the HTML output directory
 # to force them to be regenerated.
 
 FORMULA_FONTSIZE       = 10
 
-# Use the FORMULA_TRANPARENT tag to determine whether or not the images 
-# generated for formulas are transparent PNGs. Transparent PNGs are 
-# not supported properly for IE 6.0, but are supported on all modern browsers. 
-# Note that when changing this option you need to delete any form_*.png files 
+# Use the FORMULA_TRANPARENT tag to determine whether or not the images
+# generated for formulas are transparent PNGs. Transparent PNGs are
+# not supported properly for IE 6.0, but are supported on all modern browsers.
+# Note that when changing this option you need to delete any form_*.png files
 # in the HTML output before the changes have effect.
 
 FORMULA_TRANSPARENT    = YES
 
-# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax 
-# (see http://www.mathjax.org) which uses client side Javascript for the 
-# rendering instead of using prerendered bitmaps. Use this if you do not 
-# have LaTeX installed or if you want to formulas look prettier in the HTML 
-# output. When enabled you may also need to install MathJax separately and 
+# Enable the USE_MATHJAX option to render LaTeX formulas using MathJax
+# (see http://www.mathjax.org) which uses client side Javascript for the
+# rendering instead of using prerendered bitmaps. Use this if you do not
+# have LaTeX installed or if you want to formulas look prettier in the HTML
+# output. When enabled you may also need to install MathJax separately and
 # configure the path to it using the MATHJAX_RELPATH option.
 
 USE_MATHJAX            = NO
 
-# When MathJax is enabled you can set the default output format to be used for 
-# thA MathJax output. Supported types are HTML-CSS, NativeMML (i.e. MathML) and 
-# SVG. The default value is HTML-CSS, which is slower, but has the best 
+# When MathJax is enabled you can set the default output format to be used for
+# thA MathJax output. Supported types are HTML-CSS, NativeMML (i.e. MathML) and
+# SVG. The default value is HTML-CSS, which is slower, but has the best
 # compatibility.
 
 MATHJAX_FORMAT         = HTML-CSS
 
-# When MathJax is enabled you need to specify the location relative to the 
-# HTML output directory using the MATHJAX_RELPATH option. The destination 
-# directory should contain the MathJax.js script. For instance, if the mathjax 
-# directory is located at the same level as the HTML output directory, then 
-# MATHJAX_RELPATH should be ../mathjax. The default value points to 
-# the MathJax Content Delivery Network so you can quickly see the result without 
-# installing MathJax.  However, it is strongly recommended to install a local 
+# When MathJax is enabled you need to specify the location relative to the
+# HTML output directory using the MATHJAX_RELPATH option. The destination
+# directory should contain the MathJax.js script. For instance, if the mathjax
+# directory is located at the same level as the HTML output directory, then
+# MATHJAX_RELPATH should be ../mathjax. The default value points to
+# the MathJax Content Delivery Network so you can quickly see the result without
+# installing MathJax.  However, it is strongly recommended to install a local
 # copy of MathJax from http://www.mathjax.org before deployment.
 
 MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
 
-# The MATHJAX_EXTENSIONS tag can be used to specify one or MathJax extension 
+# The MATHJAX_EXTENSIONS tag can be used to specify one or MathJax extension
 # names that should be enabled during MathJax rendering.
 
-MATHJAX_EXTENSIONS     = 
+MATHJAX_EXTENSIONS     =
 
-# When the SEARCHENGINE tag is enabled doxygen will generate a search box 
-# for the HTML output. The underlying search engine uses javascript 
-# and DHTML and should work on any modern browser. Note that when using 
-# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets 
-# (GENERATE_DOCSET) there is already a search function so this one should 
-# typically be disabled. For large projects the javascript based search engine 
+# When the SEARCHENGINE tag is enabled doxygen will generate a search box
+# for the HTML output. The underlying search engine uses javascript
+# and DHTML and should work on any modern browser. Note that when using
+# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets
+# (GENERATE_DOCSET) there is already a search function so this one should
+# typically be disabled. For large projects the javascript based search engine
 # can be slow, then enabling SERVER_BASED_SEARCH may provide a better solution.
 
 SEARCHENGINE           = NO
 
-# When the SERVER_BASED_SEARCH tag is enabled the search engine will be 
-# implemented using a web server instead of a web client using Javascript. 
-# There are two flavours of web server based search depending on the 
-# EXTERNAL_SEARCH setting. When disabled, doxygen will generate a PHP script for 
-# searching and an index file used by the script. When EXTERNAL_SEARCH is 
-# enabled the indexing and searching needs to be provided by external tools. 
+# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
+# implemented using a web server instead of a web client using Javascript.
+# There are two flavours of web server based search depending on the
+# EXTERNAL_SEARCH setting. When disabled, doxygen will generate a PHP script for
+# searching and an index file used by the script. When EXTERNAL_SEARCH is
+# enabled the indexing and searching needs to be provided by external tools.
 # See the manual for details.
 
 SERVER_BASED_SEARCH    = NO
 
-# When EXTERNAL_SEARCH is enabled doxygen will no longer generate the PHP 
-# script for searching. Instead the search results are written to an XML file 
-# which needs to be processed by an external indexer. Doxygen will invoke an 
-# external search engine pointed to by the SEARCHENGINE_URL option to obtain 
-# the search results. Doxygen ships with an example indexer (doxyindexer) and 
-# search engine (doxysearch.cgi) which are based on the open source search engine 
+# When EXTERNAL_SEARCH is enabled doxygen will no longer generate the PHP
+# script for searching. Instead the search results are written to an XML file
+# which needs to be processed by an external indexer. Doxygen will invoke an
+# external search engine pointed to by the SEARCHENGINE_URL option to obtain
+# the search results. Doxygen ships with an example indexer (doxyindexer) and
+# search engine (doxysearch.cgi) which are based on the open source search engine
 # library Xapian. See the manual for configuration details.
 
 EXTERNAL_SEARCH        = NO
 
-# The SEARCHENGINE_URL should point to a search engine hosted by a web server 
-# which will returned the search results when EXTERNAL_SEARCH is enabled. 
-# Doxygen ships with an example search engine (doxysearch) which is based on 
-# the open source search engine library Xapian. See the manual for configuration 
+# The SEARCHENGINE_URL should point to a search engine hosted by a web server
+# which will returned the search results when EXTERNAL_SEARCH is enabled.
+# Doxygen ships with an example search engine (doxysearch) which is based on
+# the open source search engine library Xapian. See the manual for configuration
 # details.
 
-SEARCHENGINE_URL       = 
+SEARCHENGINE_URL       =
 
-# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed 
-# search data is written to a file for indexing by an external tool. With the 
+# When SERVER_BASED_SEARCH and EXTERNAL_SEARCH are both enabled the unindexed
+# search data is written to a file for indexing by an external tool. With the
 # SEARCHDATA_FILE tag the name of this file can be specified.
 
 SEARCHDATA_FILE        = searchdata.xml
 
-# When SERVER_BASED_SEARCH AND EXTERNAL_SEARCH are both enabled the 
-# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is 
-# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple 
+# When SERVER_BASED_SEARCH AND EXTERNAL_SEARCH are both enabled the
+# EXTERNAL_SEARCH_ID tag can be used as an identifier for the project. This is
+# useful in combination with EXTRA_SEARCH_MAPPINGS to search through multiple
 # projects and redirect the results back to the right project.
 
-EXTERNAL_SEARCH_ID     = 
+EXTERNAL_SEARCH_ID     =
 
-# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen 
-# projects other than the one defined by this configuration file, but that are 
-# all added to the same external search index. Each project needs to have a 
-# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id 
-# of to a relative location where the documentation can be found. 
+# The EXTRA_SEARCH_MAPPINGS tag can be used to enable searching through doxygen
+# projects other than the one defined by this configuration file, but that are
+# all added to the same external search index. Each project needs to have a
+# unique id set via EXTERNAL_SEARCH_ID. The search mapping then maps the id
+# of to a relative location where the documentation can be found.
 # The format is: EXTRA_SEARCH_MAPPINGS = id1=loc1 id2=loc2 ...
 
-EXTRA_SEARCH_MAPPINGS  = 
+EXTRA_SEARCH_MAPPINGS  =
 
 #---------------------------------------------------------------------------
 # configuration options related to the LaTeX output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will 
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will
 # generate Latex output.
 
 GENERATE_LATEX         = NO
 
-# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `latex' will be used as the default path.
 
 LATEX_OUTPUT           = latex
 
-# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be 
-# invoked. If left blank `latex' will be used as the default command name. 
-# Note that when enabling USE_PDFLATEX this option is only used for 
-# generating bitmaps for formulas in the HTML output, but not in the 
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked. If left blank `latex' will be used as the default command name.
+# Note that when enabling USE_PDFLATEX this option is only used for
+# generating bitmaps for formulas in the HTML output, but not in the
 # Makefile that is written to the output directory.
 
 LATEX_CMD_NAME         = latex
 
-# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to 
-# generate index for LaTeX. If left blank `makeindex' will be used as the 
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to
+# generate index for LaTeX. If left blank `makeindex' will be used as the
 # default command name.
 
 MAKEINDEX_CMD_NAME     = makeindex
 
-# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact 
-# LaTeX documents. This may be useful for small projects and may help to 
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact
+# LaTeX documents. This may be useful for small projects and may help to
 # save some trees in general.
 
 COMPACT_LATEX          = NO
 
-# The PAPER_TYPE tag can be used to set the paper type that is used 
-# by the printer. Possible values are: a4, letter, legal and 
+# The PAPER_TYPE tag can be used to set the paper type that is used
+# by the printer. Possible values are: a4, letter, legal and
 # executive. If left blank a4wide will be used.
 
 PAPER_TYPE             = a4
 
-# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX 
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
 # packages that should be included in the LaTeX output.
 
-EXTRA_PACKAGES         = 
+EXTRA_PACKAGES         =
 
-# The LATEX_HEADER tag can be used to specify a personal LaTeX header for 
-# the generated latex document. The header should contain everything until 
-# the first chapter. If it is left blank doxygen will generate a 
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
+# the generated latex document. The header should contain everything until
+# the first chapter. If it is left blank doxygen will generate a
 # standard header. Notice: only use this tag if you know what you are doing!
 
-LATEX_HEADER           = 
+LATEX_HEADER           =
 
-# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for 
-# the generated latex document. The footer should contain everything after 
-# the last chapter. If it is left blank doxygen will generate a 
+# The LATEX_FOOTER tag can be used to specify a personal LaTeX footer for
+# the generated latex document. The footer should contain everything after
+# the last chapter. If it is left blank doxygen will generate a
 # standard footer. Notice: only use this tag if you know what you are doing!
 
-LATEX_FOOTER           = 
+LATEX_FOOTER           =
 
-# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated 
-# is prepared for conversion to pdf (using ps2pdf). The pdf file will 
-# contain links (just like the HTML output) instead of page references 
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will
+# contain links (just like the HTML output) instead of page references
 # This makes the output suitable for online browsing using a pdf viewer.
 
 PDF_HYPERLINKS         = YES
 
-# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of 
-# plain latex in the generated Makefile. Set this option to YES to get a 
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of
+# plain latex in the generated Makefile. Set this option to YES to get a
 # higher quality PDF documentation.
 
 USE_PDFLATEX           = YES
 
-# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. 
-# command to the generated LaTeX files. This will instruct LaTeX to keep 
-# running if errors occur, instead of asking the user for help. 
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode.
+# command to the generated LaTeX files. This will instruct LaTeX to keep
+# running if errors occur, instead of asking the user for help.
 # This option is also used when generating formulas in HTML.
 
 LATEX_BATCHMODE        = NO
 
-# If LATEX_HIDE_INDICES is set to YES then doxygen will not 
-# include the index chapters (such as File Index, Compound Index, etc.) 
+# If LATEX_HIDE_INDICES is set to YES then doxygen will not
+# include the index chapters (such as File Index, Compound Index, etc.)
 # in the output.
 
 LATEX_HIDE_INDICES     = NO
 
-# If LATEX_SOURCE_CODE is set to YES then doxygen will include 
-# source code with syntax highlighting in the LaTeX output. 
-# Note that which sources are shown also depends on other settings 
+# If LATEX_SOURCE_CODE is set to YES then doxygen will include
+# source code with syntax highlighting in the LaTeX output.
+# Note that which sources are shown also depends on other settings
 # such as SOURCE_BROWSER.
 
 LATEX_SOURCE_CODE      = NO
 
-# The LATEX_BIB_STYLE tag can be used to specify the style to use for the 
-# bibliography, e.g. plainnat, or ieeetr. The default style is "plain". See 
+# The LATEX_BIB_STYLE tag can be used to specify the style to use for the
+# bibliography, e.g. plainnat, or ieeetr. The default style is "plain". See
 # http://en.wikipedia.org/wiki/BibTeX for more info.
 
 LATEX_BIB_STYLE        = plain
@@ -1426,68 +1426,68 @@
 # configuration options related to the RTF output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output 
-# The RTF output is optimized for Word 97 and may not look very pretty with 
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output
+# The RTF output is optimized for Word 97 and may not look very pretty with
 # other RTF readers or editors.
 
 GENERATE_RTF           = NO
 
-# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `rtf' will be used as the default path.
 
 RTF_OUTPUT             = rtf
 
-# If the COMPACT_RTF tag is set to YES Doxygen generates more compact 
-# RTF documents. This may be useful for small projects and may help to 
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact
+# RTF documents. This may be useful for small projects and may help to
 # save some trees in general.
 
 COMPACT_RTF            = NO
 
-# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated 
-# will contain hyperlink fields. The RTF file will 
-# contain links (just like the HTML output) instead of page references. 
-# This makes the output suitable for online browsing using WORD or other 
-# programs which support those fields. 
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated
+# will contain hyperlink fields. The RTF file will
+# contain links (just like the HTML output) instead of page references.
+# This makes the output suitable for online browsing using WORD or other
+# programs which support those fields.
 # Note: wordpad (write) and others do not support links.
 
 RTF_HYPERLINKS         = NO
 
-# Load style sheet definitions from file. Syntax is similar to doxygen's 
-# config file, i.e. a series of assignments. You only have to provide 
+# Load style sheet definitions from file. Syntax is similar to doxygen's
+# config file, i.e. a series of assignments. You only have to provide
 # replacements, missing definitions are set to their default value.
 
-RTF_STYLESHEET_FILE    = 
+RTF_STYLESHEET_FILE    =
 
-# Set optional variables used in the generation of an rtf document. 
+# Set optional variables used in the generation of an rtf document.
 # Syntax is similar to doxygen's config file.
 
-RTF_EXTENSIONS_FILE    = 
+RTF_EXTENSIONS_FILE    =
 
 #---------------------------------------------------------------------------
 # configuration options related to the man page output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_MAN tag is set to YES (the default) Doxygen will 
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will
 # generate man pages
 
 GENERATE_MAN           = NO
 
-# The MAN_OUTPUT tag is used to specify where the man pages will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The MAN_OUTPUT tag is used to specify where the man pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `man' will be used as the default path.
 
 MAN_OUTPUT             = man
 
-# The MAN_EXTENSION tag determines the extension that is added to 
+# The MAN_EXTENSION tag determines the extension that is added to
 # the generated man pages (default is the subroutine's section .3)
 
 MAN_EXTENSION          = .3
 
-# If the MAN_LINKS tag is set to YES and Doxygen generates man output, 
-# then it will generate one additional man file for each entity 
-# documented in the real man page(s). These additional files 
-# only source the real man page, but without them the man command 
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output,
+# then it will generate one additional man file for each entity
+# documented in the real man page(s). These additional files
+# only source the real man page, but without them the man command
 # would be unable to find the correct page. The default is NO.
 
 MAN_LINKS              = NO
@@ -1496,33 +1496,33 @@
 # configuration options related to the XML output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_XML tag is set to YES Doxygen will 
-# generate an XML file that captures the structure of 
+# If the GENERATE_XML tag is set to YES Doxygen will
+# generate an XML file that captures the structure of
 # the code including all documentation.
 
 GENERATE_XML           = NO
 
-# The XML_OUTPUT tag is used to specify where the XML pages will be put. 
-# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# The XML_OUTPUT tag is used to specify where the XML pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
 # put in front of it. If left blank `xml' will be used as the default path.
 
 XML_OUTPUT             = xml
 
-# The XML_SCHEMA tag can be used to specify an XML schema, 
-# which can be used by a validating XML parser to check the 
+# The XML_SCHEMA tag can be used to specify an XML schema,
+# which can be used by a validating XML parser to check the
 # syntax of the XML files.
 
-XML_SCHEMA             = 
+XML_SCHEMA             =
 
-# The XML_DTD tag can be used to specify an XML DTD, 
-# which can be used by a validating XML parser to check the 
+# The XML_DTD tag can be used to specify an XML DTD,
+# which can be used by a validating XML parser to check the
 # syntax of the XML files.
 
-XML_DTD                = 
+XML_DTD                =
 
-# If the XML_PROGRAMLISTING tag is set to YES Doxygen will 
-# dump the program listings (including syntax highlighting 
-# and cross-referencing information) to the XML output. Note that 
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will
+# dump the program listings (including syntax highlighting
+# and cross-referencing information) to the XML output. Note that
 # enabling this will significantly increase the size of the XML output.
 
 XML_PROGRAMLISTING     = YES
@@ -1531,10 +1531,10 @@
 # configuration options for the AutoGen Definitions output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will 
-# generate an AutoGen Definitions (see autogen.sf.net) file 
-# that captures the structure of the code including all 
-# documentation. Note that this feature is still experimental 
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will
+# generate an AutoGen Definitions (see autogen.sf.net) file
+# that captures the structure of the code including all
+# documentation. Note that this feature is still experimental
 # and incomplete at the moment.
 
 GENERATE_AUTOGEN_DEF   = NO
@@ -1543,97 +1543,97 @@
 # configuration options related to the Perl module output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_PERLMOD tag is set to YES Doxygen will 
-# generate a Perl module file that captures the structure of 
-# the code including all documentation. Note that this 
-# feature is still experimental and incomplete at the 
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will
+# generate a Perl module file that captures the structure of
+# the code including all documentation. Note that this
+# feature is still experimental and incomplete at the
 # moment.
 
 GENERATE_PERLMOD       = NO
 
-# If the PERLMOD_LATEX tag is set to YES Doxygen will generate 
-# the necessary Makefile rules, Perl scripts and LaTeX code to be able 
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able
 # to generate PDF and DVI output from the Perl module output.
 
 PERLMOD_LATEX          = NO
 
-# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be 
-# nicely formatted so it can be parsed by a human reader.  This is useful 
-# if you want to understand what is going on.  On the other hand, if this 
-# tag is set to NO the size of the Perl module output will be much smaller 
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be
+# nicely formatted so it can be parsed by a human reader.  This is useful
+# if you want to understand what is going on.  On the other hand, if this
+# tag is set to NO the size of the Perl module output will be much smaller
 # and Perl will parse it just the same.
 
 PERLMOD_PRETTY         = YES
 
-# The names of the make variables in the generated doxyrules.make file 
-# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. 
-# This is useful so different doxyrules.make files included by the same 
+# The names of the make variables in the generated doxyrules.make file
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX.
+# This is useful so different doxyrules.make files included by the same
 # Makefile don't overwrite each other's variables.
 
-PERLMOD_MAKEVAR_PREFIX = 
+PERLMOD_MAKEVAR_PREFIX =
 
 #---------------------------------------------------------------------------
 # Configuration options related to the preprocessor
 #---------------------------------------------------------------------------
 
-# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will 
-# evaluate all C-preprocessor directives found in the sources and include 
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will
+# evaluate all C-preprocessor directives found in the sources and include
 # files.
 
-ENABLE_PREPROCESSING   = YES
+ENABLE_PREPROCESSING   = NO
 
-# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro 
-# names in the source code. If set to NO (the default) only conditional 
-# compilation will be performed. Macro expansion can be done in a controlled 
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro
+# names in the source code. If set to NO (the default) only conditional
+# compilation will be performed. Macro expansion can be done in a controlled
 # way by setting EXPAND_ONLY_PREDEF to YES.
 
 MACRO_EXPANSION        = NO
 
-# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES 
-# then the macro expansion is limited to the macros specified with the 
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES
+# then the macro expansion is limited to the macros specified with the
 # PREDEFINED and EXPAND_AS_DEFINED tags.
 
 EXPAND_ONLY_PREDEF     = NO
 
-# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files 
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files
 # pointed to by INCLUDE_PATH will be searched when a #include is found.
 
 SEARCH_INCLUDES        = YES
 
-# The INCLUDE_PATH tag can be used to specify one or more directories that 
-# contain include files that are not input files but should be processed by 
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by
 # the preprocessor.
 
-INCLUDE_PATH           = 
+INCLUDE_PATH           =
 
-# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard 
-# patterns (like *.h and *.hpp) to filter out the header-files in the 
-# directories. If left blank, the patterns specified with FILE_PATTERNS will 
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will
 # be used.
 
-INCLUDE_FILE_PATTERNS  = 
+INCLUDE_FILE_PATTERNS  =
 
-# The PREDEFINED tag can be used to specify one or more macro names that 
-# are defined before the preprocessor is started (similar to the -D option of 
-# gcc). The argument of the tag is a list of macros of the form: name 
-# or name=definition (no spaces). If the definition and the = are 
-# omitted =1 is assumed. To prevent a macro definition from being 
-# undefined via #undef or recursively expanded use the := operator 
+# The PREDEFINED tag can be used to specify one or more macro names that
+# are defined before the preprocessor is started (similar to the -D option of
+# gcc). The argument of the tag is a list of macros of the form: name
+# or name=definition (no spaces). If the definition and the = are
+# omitted =1 is assumed. To prevent a macro definition from being
+# undefined via #undef or recursively expanded use the := operator
 # instead of the = operator.
 
-PREDEFINED             = 
+PREDEFINED             =
 
-# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then 
-# this tag can be used to specify a list of macro names that should be expanded. 
-# The macro definition that is found in the sources will be used. 
-# Use the PREDEFINED tag if you want to use a different macro definition that 
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then
+# this tag can be used to specify a list of macro names that should be expanded.
+# The macro definition that is found in the sources will be used.
+# Use the PREDEFINED tag if you want to use a different macro definition that
 # overrules the definition found in the source code.
 
-EXPAND_AS_DEFINED      = 
+EXPAND_AS_DEFINED      =
 
-# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then 
-# doxygen's preprocessor will remove all references to function-like macros 
-# that are alone on a line, have an all uppercase name, and do not end with a 
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then
+# doxygen's preprocessor will remove all references to function-like macros
+# that are alone on a line, have an all uppercase name, and do not end with a
 # semicolon, because these will confuse the parser if not removed.
 
 SKIP_FUNCTION_MACROS   = YES
@@ -1642,37 +1642,37 @@
 # Configuration::additions related to external references
 #---------------------------------------------------------------------------
 
-# The TAGFILES option can be used to specify one or more tagfiles. For each 
-# tag file the location of the external documentation should be added. The 
-# format of a tag file without this location is as follows: 
-#   TAGFILES = file1 file2 ... 
-# Adding location for the tag files is done as follows: 
-#   TAGFILES = file1=loc1 "file2 = loc2" ... 
-# where "loc1" and "loc2" can be relative or absolute paths 
-# or URLs. Note that each tag file must have a unique name (where the name does 
-# NOT include the path). If a tag file is not located in the directory in which 
+# The TAGFILES option can be used to specify one or more tagfiles. For each
+# tag file the location of the external documentation should be added. The
+# format of a tag file without this location is as follows:
+#   TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+#   TAGFILES = file1=loc1 "file2 = loc2" ...
+# where "loc1" and "loc2" can be relative or absolute paths
+# or URLs. Note that each tag file must have a unique name (where the name does
+# NOT include the path). If a tag file is not located in the directory in which
 # doxygen is run, you must also specify the path to the tagfile here.
 
-TAGFILES               = 
+TAGFILES               =
 
-# When a file name is specified after GENERATE_TAGFILE, doxygen will create 
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create
 # a tag file that is based on the input files it reads.
 
-GENERATE_TAGFILE       = 
+GENERATE_TAGFILE       =
 
-# If the ALLEXTERNALS tag is set to YES all external classes will be listed 
-# in the class index. If set to NO only the inherited external classes 
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed
+# in the class index. If set to NO only the inherited external classes
 # will be listed.
 
 ALLEXTERNALS           = NO
 
-# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed 
-# in the modules index. If set to NO, only the current project's groups will 
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will
 # be listed.
 
 EXTERNAL_GROUPS        = YES
 
-# The PERL_PATH should be the absolute path and name of the perl script 
+# The PERL_PATH should be the absolute path and name of the perl script
 # interpreter (i.e. the result of `which perl').
 
 PERL_PATH              = /usr/bin/perl
@@ -1681,222 +1681,222 @@
 # Configuration options related to the dot tool
 #---------------------------------------------------------------------------
 
-# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will 
-# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base 
-# or super classes. Setting the tag to NO turns the diagrams off. Note that 
-# this option also works with HAVE_DOT disabled, but it is recommended to 
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
+# or super classes. Setting the tag to NO turns the diagrams off. Note that
+# this option also works with HAVE_DOT disabled, but it is recommended to
 # install and use dot, since it yields more powerful graphs.
 
 CLASS_DIAGRAMS         = NO
 
-# You can define message sequence charts within doxygen comments using the \msc 
-# command. Doxygen will then run the mscgen tool (see 
-# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the 
-# documentation. The MSCGEN_PATH tag allows you to specify the directory where 
-# the mscgen tool resides. If left empty the tool is assumed to be found in the 
+# You can define message sequence charts within doxygen comments using the \msc
+# command. Doxygen will then run the mscgen tool (see
+# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where
+# the mscgen tool resides. If left empty the tool is assumed to be found in the
 # default search path.
 
-MSCGEN_PATH            = 
+MSCGEN_PATH            =
 
-# If set to YES, the inheritance and collaboration graphs will hide 
-# inheritance and usage relations if the target is undocumented 
+# If set to YES, the inheritance and collaboration graphs will hide
+# inheritance and usage relations if the target is undocumented
 # or is not a class.
 
 HIDE_UNDOC_RELATIONS   = YES
 
-# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is 
-# available from the path. This tool is part of Graphviz, a graph visualization 
-# toolkit from AT&T and Lucent Bell Labs. The other options in this section 
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz, a graph visualization
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section
 # have no effect if this option is set to NO (the default)
 
 HAVE_DOT               = NO
 
-# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is 
-# allowed to run in parallel. When set to 0 (the default) doxygen will 
-# base this on the number of processors available in the system. You can set it 
-# explicitly to a value larger than 0 to get control over the balance 
+# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is
+# allowed to run in parallel. When set to 0 (the default) doxygen will
+# base this on the number of processors available in the system. You can set it
+# explicitly to a value larger than 0 to get control over the balance
 # between CPU load and processing speed.
 
 DOT_NUM_THREADS        = 0
 
-# By default doxygen will use the Helvetica font for all dot files that 
-# doxygen generates. When you want a differently looking font you can specify 
-# the font name using DOT_FONTNAME. You need to make sure dot is able to find 
-# the font, which can be done by putting it in a standard location or by setting 
-# the DOTFONTPATH environment variable or by setting DOT_FONTPATH to the 
+# By default doxygen will use the Helvetica font for all dot files that
+# doxygen generates. When you want a differently looking font you can specify
+# the font name using DOT_FONTNAME. You need to make sure dot is able to find
+# the font, which can be done by putting it in a standard location or by setting
+# the DOTFONTPATH environment variable or by setting DOT_FONTPATH to the
 # directory containing the font.
 
 DOT_FONTNAME           = Helvetica
 
-# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs. 
+# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs.
 # The default size is 10pt.
 
 DOT_FONTSIZE           = 10
 
-# By default doxygen will tell dot to use the Helvetica font. 
-# If you specify a different font using DOT_FONTNAME you can use DOT_FONTPATH to 
+# By default doxygen will tell dot to use the Helvetica font.
+# If you specify a different font using DOT_FONTNAME you can use DOT_FONTPATH to
 # set the path where dot can find it.
 
-DOT_FONTPATH           = 
+DOT_FONTPATH           =
 
-# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
-# will generate a graph for each documented class showing the direct and 
-# indirect inheritance relations. Setting this tag to YES will force the 
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect inheritance relations. Setting this tag to YES will force the
 # CLASS_DIAGRAMS tag to NO.
 
 CLASS_GRAPH            = YES
 
-# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen 
-# will generate a graph for each documented class showing the direct and 
-# indirect implementation dependencies (inheritance, containment, and 
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect implementation dependencies (inheritance, containment, and
 # class references variables) of the class with other documented classes.
 
 COLLABORATION_GRAPH    = YES
 
-# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen 
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen
 # will generate a graph for groups, showing the direct groups dependencies
 
 GROUP_GRAPHS           = YES
 
-# If the UML_LOOK tag is set to YES doxygen will generate inheritance and 
-# collaboration diagrams in a style similar to the OMG's Unified Modeling 
+# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
 # Language.
 
 UML_LOOK               = NO
 
-# If the UML_LOOK tag is enabled, the fields and methods are shown inside 
-# the class node. If there are many fields or methods and many nodes the 
-# graph may become too big to be useful. The UML_LIMIT_NUM_FIELDS 
-# threshold limits the number of items for each type to make the size more 
-# managable. Set this to 0 for no limit. Note that the threshold may be 
+# If the UML_LOOK tag is enabled, the fields and methods are shown inside
+# the class node. If there are many fields or methods and many nodes the
+# graph may become too big to be useful. The UML_LIMIT_NUM_FIELDS
+# threshold limits the number of items for each type to make the size more
+# managable. Set this to 0 for no limit. Note that the threshold may be
 # exceeded by 50% before the limit is enforced.
 
 UML_LIMIT_NUM_FIELDS   = 10
 
-# If set to YES, the inheritance and collaboration graphs will show the 
+# If set to YES, the inheritance and collaboration graphs will show the
 # relations between templates and their instances.
 
 TEMPLATE_RELATIONS     = NO
 
-# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT 
-# tags are set to YES then doxygen will generate a graph for each documented 
-# file showing the direct and indirect include dependencies of the file with 
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT
+# tags are set to YES then doxygen will generate a graph for each documented
+# file showing the direct and indirect include dependencies of the file with
 # other documented files.
 
 INCLUDE_GRAPH          = YES
 
-# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and 
-# HAVE_DOT tags are set to YES then doxygen will generate a graph for each 
-# documented header file showing the documented files that directly or 
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and
+# HAVE_DOT tags are set to YES then doxygen will generate a graph for each
+# documented header file showing the documented files that directly or
 # indirectly include this file.
 
 INCLUDED_BY_GRAPH      = YES
 
-# If the CALL_GRAPH and HAVE_DOT options are set to YES then 
-# doxygen will generate a call dependency graph for every global function 
-# or class method. Note that enabling this option will significantly increase 
-# the time of a run. So in most cases it will be better to enable call graphs 
+# If the CALL_GRAPH and HAVE_DOT options are set to YES then
+# doxygen will generate a call dependency graph for every global function
+# or class method. Note that enabling this option will significantly increase
+# the time of a run. So in most cases it will be better to enable call graphs
 # for selected functions only using the \callgraph command.
 
 CALL_GRAPH             = NO
 
-# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then 
-# doxygen will generate a caller dependency graph for every global function 
-# or class method. Note that enabling this option will significantly increase 
-# the time of a run. So in most cases it will be better to enable caller 
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then
+# doxygen will generate a caller dependency graph for every global function
+# or class method. Note that enabling this option will significantly increase
+# the time of a run. So in most cases it will be better to enable caller
 # graphs for selected functions only using the \callergraph command.
 
 CALLER_GRAPH           = NO
 
-# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen 
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen
 # will generate a graphical hierarchy of all classes instead of a textual one.
 
 GRAPHICAL_HIERARCHY    = YES
 
-# If the DIRECTORY_GRAPH and HAVE_DOT tags are set to YES 
-# then doxygen will show the dependencies a directory has on other directories 
-# in a graphical way. The dependency relations are determined by the #include 
+# If the DIRECTORY_GRAPH and HAVE_DOT tags are set to YES
+# then doxygen will show the dependencies a directory has on other directories
+# in a graphical way. The dependency relations are determined by the #include
 # relations between the files in the directories.
 
 DIRECTORY_GRAPH        = YES
 
-# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images 
-# generated by dot. Possible values are svg, png, jpg, or gif. 
-# If left blank png will be used. If you choose svg you need to set 
-# HTML_FILE_EXTENSION to xhtml in order to make the SVG files 
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. Possible values are svg, png, jpg, or gif.
+# If left blank png will be used. If you choose svg you need to set
+# HTML_FILE_EXTENSION to xhtml in order to make the SVG files
 # visible in IE 9+ (other browsers do not have this requirement).
 
 DOT_IMAGE_FORMAT       = png
 
-# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to 
-# enable generation of interactive SVG images that allow zooming and panning. 
-# Note that this requires a modern browser other than Internet Explorer. 
-# Tested and working are Firefox, Chrome, Safari, and Opera. For IE 9+ you 
-# need to set HTML_FILE_EXTENSION to xhtml in order to make the SVG files 
+# If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
+# enable generation of interactive SVG images that allow zooming and panning.
+# Note that this requires a modern browser other than Internet Explorer.
+# Tested and working are Firefox, Chrome, Safari, and Opera. For IE 9+ you
+# need to set HTML_FILE_EXTENSION to xhtml in order to make the SVG files
 # visible. Older versions of IE do not have SVG support.
 
 INTERACTIVE_SVG        = NO
 
-# The tag DOT_PATH can be used to specify the path where the dot tool can be 
+# The tag DOT_PATH can be used to specify the path where the dot tool can be
 # found. If left blank, it is assumed the dot tool can be found in the path.
 
-DOT_PATH               = 
+DOT_PATH               =
 
-# The DOTFILE_DIRS tag can be used to specify one or more directories that 
-# contain dot files that are included in the documentation (see the 
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the
 # \dotfile command).
 
-DOTFILE_DIRS           = 
+DOTFILE_DIRS           =
 
-# The MSCFILE_DIRS tag can be used to specify one or more directories that 
-# contain msc files that are included in the documentation (see the 
+# The MSCFILE_DIRS tag can be used to specify one or more directories that
+# contain msc files that are included in the documentation (see the
 # \mscfile command).
 
-MSCFILE_DIRS           = 
+MSCFILE_DIRS           =
 
-# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of 
-# nodes that will be shown in the graph. If the number of nodes in a graph 
-# becomes larger than this value, doxygen will truncate the graph, which is 
-# visualized by representing a node as a red box. Note that doxygen if the 
-# number of direct children of the root node in a graph is already larger than 
-# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note 
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of
+# nodes that will be shown in the graph. If the number of nodes in a graph
+# becomes larger than this value, doxygen will truncate the graph, which is
+# visualized by representing a node as a red box. Note that doxygen if the
+# number of direct children of the root node in a graph is already larger than
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note
 # that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
 
 DOT_GRAPH_MAX_NODES    = 50
 
-# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the 
-# graphs generated by dot. A depth value of 3 means that only nodes reachable 
-# from the root by following a path via at most 3 edges will be shown. Nodes 
-# that lay further from the root node will be omitted. Note that setting this 
-# option to 1 or 2 may greatly reduce the computation time needed for large 
-# code bases. Also note that the size of a graph can be further restricted by 
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the
+# graphs generated by dot. A depth value of 3 means that only nodes reachable
+# from the root by following a path via at most 3 edges will be shown. Nodes
+# that lay further from the root node will be omitted. Note that setting this
+# option to 1 or 2 may greatly reduce the computation time needed for large
+# code bases. Also note that the size of a graph can be further restricted by
 # DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
 
 MAX_DOT_GRAPH_DEPTH    = 0
 
-# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent 
-# background. This is disabled by default, because dot on Windows does not 
-# seem to support this out of the box. Warning: Depending on the platform used, 
-# enabling this option may lead to badly anti-aliased labels on the edges of 
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, because dot on Windows does not
+# seem to support this out of the box. Warning: Depending on the platform used,
+# enabling this option may lead to badly anti-aliased labels on the edges of
 # a graph (i.e. they become hard to read).
 
 DOT_TRANSPARENT        = NO
 
-# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output 
-# files in one run (i.e. multiple -o and -T options on the command line). This 
-# makes dot run faster, but since only newer versions of dot (>1.8.10) 
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10)
 # support this, this feature is disabled by default.
 
 DOT_MULTI_TARGETS      = NO
 
-# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
-# generate a legend page explaining the meaning of the various boxes and 
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will
+# generate a legend page explaining the meaning of the various boxes and
 # arrows in the dot generated graphs.
 
 GENERATE_LEGEND        = YES
 
-# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will 
-# remove the intermediate dot files that are used to generate 
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
+# remove the intermediate dot files that are used to generate
 # the various graphs.
 
 DOT_CLEANUP            = YES
diff --git a/include/android/multinetwork.h b/include/android/multinetwork.h
index be01518..97892f8 100644
--- a/include/android/multinetwork.h
+++ b/include/android/multinetwork.h
@@ -56,12 +56,10 @@
 /**
  * Set the network to be used by the given socket file descriptor.
  *
- * To clear a previous socket binding invoke with NETWORK_UNSPECIFIED.
+ * To clear a previous socket binding, invoke with NETWORK_UNSPECIFIED.
  *
- * This is the equivalent of:
+ * This is the equivalent of: [android.net.Network#bindSocket()](https://developer.android.com/reference/android/net/Network.html#bindSocket(java.net.Socket))
  *
- *     [ android.net.Network#bindSocket() ]
- *     https://developer.android.com/reference/android/net/Network.html#bindSocket(java.net.Socket)
  */
 int android_setsocknetwork(net_handle_t network, int fd);
 
@@ -75,12 +73,10 @@
  * resolutions will fail.  This is by design so an application doesn't
  * accidentally use sockets it thinks are still bound to a particular network.
  *
- * To clear a previous process binding invoke with NETWORK_UNSPECIFIED.
+ * To clear a previous process binding, invoke with NETWORK_UNSPECIFIED.
  *
- * This is the equivalent of:
+ * This is the equivalent of: [android.net.ConnectivityManager#setProcessDefaultNetwork()](https://developer.android.com/reference/android/net/ConnectivityManager.html#setProcessDefaultNetwork(android.net.Network))
  *
- *     [ android.net.ConnectivityManager#setProcessDefaultNetwork() ]
- *     https://developer.android.com/reference/android/net/ConnectivityManager.html#setProcessDefaultNetwork(android.net.Network)
  */
 int android_setprocnetwork(net_handle_t network);
 
@@ -96,10 +92,8 @@
  *     - either |node| or |service| may be NULL, but not both
  *     - |res| must not be NULL
  *
- * This is the equivalent of:
+ * This is the equivalent of: [android.net.Network#getAllByName()](https://developer.android.com/reference/android/net/Network.html#getAllByName(java.lang.String))
  *
- *     [ android.net.Network#getAllByName() ]
- *     https://developer.android.com/reference/android/net/Network.html#getAllByName(java.lang.String)
  */
 int android_getaddrinfofornetwork(net_handle_t network,
         const char *node, const char *service,
diff --git a/include/android/trace.h b/include/android/trace.h
index 6cdcfeb..d3b1fb6 100644
--- a/include/android/trace.h
+++ b/include/android/trace.h
@@ -14,6 +14,13 @@
  * limitations under the License.
  */
 
+/**
+ * @file trace.h
+ * @brief Writes trace events to the system trace buffer.
+ *
+ * These trace events can be collected and visualized using the Systrace tool.
+ * For information about using the Systrace tool, read <a href="https://developer.android.com/studio/profile/systrace.html">Analyzing UI Performance with Systrace</a>.
+ */
 
 #ifndef ANDROID_NATIVE_TRACE_H
 #define ANDROID_NATIVE_TRACE_H
diff --git a/include/gui/BufferItemConsumer.h b/include/gui/BufferItemConsumer.h
index 56c7a3f..ec77ec7 100644
--- a/include/gui/BufferItemConsumer.h
+++ b/include/gui/BufferItemConsumer.h
@@ -18,18 +18,13 @@
 #define ANDROID_GUI_BUFFERITEMCONSUMER_H
 
 #include <gui/ConsumerBase.h>
-
-#include <ui/GraphicBuffer.h>
-
-#include <utils/String8.h>
-#include <utils/Vector.h>
-#include <utils/threads.h>
+#include <gui/BufferQueue.h>
 
 #define ANDROID_GRAPHICS_BUFFERITEMCONSUMER_JNI_ID "mBufferItemConsumer"
 
 namespace android {
 
-class BufferQueue;
+class String8;
 
 /**
  * BufferItemConsumer is a BufferQueue consumer endpoint that allows clients
diff --git a/include/gui/BufferQueue.h b/include/gui/BufferQueue.h
index a523cd8..c95c535 100644
--- a/include/gui/BufferQueue.h
+++ b/include/gui/BufferQueue.h
@@ -62,11 +62,12 @@
     public:
         explicit ProxyConsumerListener(const wp<ConsumerListener>& consumerListener);
         virtual ~ProxyConsumerListener();
-        virtual void onFrameAvailable(const BufferItem& item) override;
-        virtual void onFrameReplaced(const BufferItem& item) override;
-        virtual void onBuffersReleased() override;
-        virtual void onSidebandStreamChanged() override;
-        virtual void addAndGetFrameTimestamps(
+        void onDisconnect() override;
+        void onFrameAvailable(const BufferItem& item) override;
+        void onFrameReplaced(const BufferItem& item) override;
+        void onBuffersReleased() override;
+        void onSidebandStreamChanged() override;
+        void addAndGetFrameTimestamps(
                 const NewFrameEventsEntry* newTimestamps,
                 FrameEventHistoryDelta* outDelta) override;
     private:
diff --git a/include/gui/ConsumerBase.h b/include/gui/ConsumerBase.h
index ce85fc3..7912528 100644
--- a/include/gui/ConsumerBase.h
+++ b/include/gui/ConsumerBase.h
@@ -17,19 +17,23 @@
 #ifndef ANDROID_GUI_CONSUMERBASE_H
 #define ANDROID_GUI_CONSUMERBASE_H
 
-#include <gui/BufferQueue.h>
+#include <gui/BufferQueueDefs.h>
+#include <gui/IConsumerListener.h>
+#include <gui/IGraphicBufferConsumer.h>
+#include <gui/OccupancyTracker.h>
 
-#include <ui/GraphicBuffer.h>
+#include <ui/PixelFormat.h>
 
 #include <utils/String8.h>
 #include <utils/Vector.h>
 #include <utils/threads.h>
-#include <gui/IConsumerListener.h>
+
 
 namespace android {
 // ----------------------------------------------------------------------------
 
 class String8;
+class GraphicBuffer;
 
 // ConsumerBase is a base class for BufferQueue consumer end-points. It
 // handles common tasks like management of the connection to the BufferQueue
@@ -222,7 +226,7 @@
     // slot that has not yet been used. The buffer allocated to a slot will also
     // be replaced if the requested buffer usage or geometry differs from that
     // of the buffer allocated to a slot.
-    Slot mSlots[BufferQueue::NUM_BUFFER_SLOTS];
+    Slot mSlots[BufferQueueDefs::NUM_BUFFER_SLOTS];
 
     // mAbandoned indicates that the BufferQueue will no longer be used to
     // consume images buffers pushed to it using the IGraphicBufferProducer
diff --git a/include/gui/CpuConsumer.h b/include/gui/CpuConsumer.h
index b7aa463..58602bf 100644
--- a/include/gui/CpuConsumer.h
+++ b/include/gui/CpuConsumer.h
@@ -17,18 +17,19 @@
 #ifndef ANDROID_GUI_CPUCONSUMER_H
 #define ANDROID_GUI_CPUCONSUMER_H
 
+#include <system/window.h>
+
 #include <gui/ConsumerBase.h>
+#include <gui/BufferQueue.h>
 
-#include <ui/GraphicBuffer.h>
-
-#include <utils/String8.h>
 #include <utils/Vector.h>
-#include <utils/threads.h>
 
 
 namespace android {
 
 class BufferQueue;
+class GraphicBuffer;
+class String8;
 
 /**
  * CpuConsumer is a BufferQueue consumer endpoint that allows direct CPU
diff --git a/include/gui/FrameTimestamps.h b/include/gui/FrameTimestamps.h
index 9e1ae94..bda3c5c 100644
--- a/include/gui/FrameTimestamps.h
+++ b/include/gui/FrameTimestamps.h
@@ -41,7 +41,7 @@
     ACQUIRE,
     FIRST_REFRESH_START,
     LAST_REFRESH_START,
-    GL_COMPOSITION_DONE,
+    GPU_COMPOSITION_DONE,
     DISPLAY_PRESENT,
     DISPLAY_RETIRE,
     DEQUEUE_READY,
@@ -52,6 +52,16 @@
 
 // A collection of timestamps corresponding to a single frame.
 struct FrameEvents {
+    static constexpr auto EVENT_COUNT =
+            static_cast<size_t>(FrameEvent::EVENT_COUNT);
+    static_assert(EVENT_COUNT <= 32, "Event count sanity check failed.");
+    static constexpr nsecs_t TIMESTAMP_PENDING =
+            std::numeric_limits<nsecs_t>::max();
+
+    static inline bool isValidTimestamp(nsecs_t time) {
+        return time != TIMESTAMP_PENDING;
+    }
+
     bool hasPostedInfo() const;
     bool hasRequestedPresentInfo() const;
     bool hasLatchInfo() const;
@@ -67,11 +77,8 @@
     void checkFencesForCompletion();
     void dump(String8& outString) const;
 
-    static constexpr size_t EVENT_COUNT =
-            static_cast<size_t>(FrameEvent::EVENT_COUNT);
-    static_assert(EVENT_COUNT <= 32, "Event count sanity check failed.");
-
     bool valid{false};
+    int connectId{0};
     uint64_t frameNumber{0};
 
     // Whether or not certain points in the frame's life cycle have been
@@ -81,12 +88,12 @@
     bool addRetireCalled{false};
     bool addReleaseCalled{false};
 
-    nsecs_t postedTime{-1};
-    nsecs_t requestedPresentTime{-1};
-    nsecs_t latchTime{-1};
-    nsecs_t firstRefreshStartTime{-1};
-    nsecs_t lastRefreshStartTime{-1};
-    nsecs_t dequeueReadyTime{-1};
+    nsecs_t postedTime{TIMESTAMP_PENDING};
+    nsecs_t requestedPresentTime{TIMESTAMP_PENDING};
+    nsecs_t latchTime{TIMESTAMP_PENDING};
+    nsecs_t firstRefreshStartTime{TIMESTAMP_PENDING};
+    nsecs_t lastRefreshStartTime{TIMESTAMP_PENDING};
+    nsecs_t dequeueReadyTime{TIMESTAMP_PENDING};
 
     std::shared_ptr<FenceTime> acquireFence{FenceTime::NO_FENCE};
     std::shared_ptr<FenceTime> gpuCompositionDoneFence{FenceTime::NO_FENCE};
@@ -206,6 +213,8 @@
 public:
     ~ConsumerFrameEventHistory() override;
 
+    void onDisconnect();
+
     void initializeCompositorTiming(const CompositorTiming& compositorTiming);
 
     void addQueue(const NewFrameEventsEntry& newEntry);
@@ -227,11 +236,13 @@
             const std::array<FrameEvents, MAX_FRAME_HISTORY>::iterator& frame);
 
     std::array<FrameEventDirtyFields, MAX_FRAME_HISTORY> mFramesDirty;
+
     size_t mQueueOffset{0};
     size_t mCompositionOffset{0};
     size_t mRetireOffset{0};
     size_t mReleaseOffset{0};
 
+    int mCurrentConnectId{0};
     bool mProducerWantsEvents{false};
 };
 
@@ -273,12 +284,12 @@
     bool mAddRetireCalled{0};
     bool mAddReleaseCalled{0};
 
-    nsecs_t mPostedTime{0};
-    nsecs_t mRequestedPresentTime{0};
-    nsecs_t mLatchTime{0};
-    nsecs_t mFirstRefreshStartTime{0};
-    nsecs_t mLastRefreshStartTime{0};
-    nsecs_t mDequeueReadyTime{0};
+    nsecs_t mPostedTime{FrameEvents::TIMESTAMP_PENDING};
+    nsecs_t mRequestedPresentTime{FrameEvents::TIMESTAMP_PENDING};
+    nsecs_t mLatchTime{FrameEvents::TIMESTAMP_PENDING};
+    nsecs_t mFirstRefreshStartTime{FrameEvents::TIMESTAMP_PENDING};
+    nsecs_t mLastRefreshStartTime{FrameEvents::TIMESTAMP_PENDING};
+    nsecs_t mDequeueReadyTime{FrameEvents::TIMESTAMP_PENDING};
 
     FenceTime::Snapshot mGpuCompositionDoneFence;
     FenceTime::Snapshot mDisplayPresentFence;
diff --git a/include/gui/GLConsumer.h b/include/gui/GLConsumer.h
index 4a49f53..51d7666 100644
--- a/include/gui/GLConsumer.h
+++ b/include/gui/GLConsumer.h
@@ -20,8 +20,7 @@
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
-#include <gui/IGraphicBufferProducer.h>
-#include <gui/BufferQueue.h>
+#include <gui/BufferQueueDefs.h>
 #include <gui/ConsumerBase.h>
 
 #include <ui/GraphicBuffer.h>
@@ -489,7 +488,7 @@
     // slot that has not yet been used. The buffer allocated to a slot will also
     // be replaced if the requested buffer usage or geometry differs from that
     // of the buffer allocated to a slot.
-    EglSlot mEglSlots[BufferQueue::NUM_BUFFER_SLOTS];
+    EglSlot mEglSlots[BufferQueueDefs::NUM_BUFFER_SLOTS];
 
     // mCurrentTexture is the buffer slot index of the buffer that is currently
     // bound to the OpenGL texture. It is initialized to INVALID_BUFFER_SLOT,
diff --git a/include/gui/IConsumerListener.h b/include/gui/IConsumerListener.h
index 93dd4ac..a3c7d64 100644
--- a/include/gui/IConsumerListener.h
+++ b/include/gui/IConsumerListener.h
@@ -43,6 +43,9 @@
     ConsumerListener() { }
     virtual ~ConsumerListener();
 
+    // onDisconnect is called when a producer disconnects from the BufferQueue.
+    virtual void onDisconnect() {} /* Asynchronous */
+
     // onFrameAvailable is called from queueBuffer each time an additional
     // frame becomes available for consumption. This means that frames that
     // are queued while in asynchronous mode only trigger the callback if no
diff --git a/include/gui/IGraphicBufferConsumer.h b/include/gui/IGraphicBufferConsumer.h
index dcddca4..60b7d24 100644
--- a/include/gui/IGraphicBufferConsumer.h
+++ b/include/gui/IGraphicBufferConsumer.h
@@ -25,8 +25,9 @@
 #include <utils/Timers.h>
 
 #include <binder/IInterface.h>
+
 #include <ui/PixelFormat.h>
-#include <ui/Rect.h>
+
 #include <gui/OccupancyTracker.h>
 
 #include <EGL/egl.h>
diff --git a/include/media/cas/CasAPI.h b/include/media/cas/CasAPI.h
new file mode 100644
index 0000000..0e88019
--- /dev/null
+++ b/include/media/cas/CasAPI.h
@@ -0,0 +1,144 @@
+/*
+ * 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.
+ */
+
+#ifndef CAS_API_H_
+#define CAS_API_H_
+
+#include <vector>
+#include <utils/String8.h>
+
+//  Loadable CasPlugin shared libraries should define the entry points
+//  as shown below:
+//
+//  extern "C" {
+//      extern android::CasFactory *createCasFactory();
+//      extern android::DescramblerFactory *createDescramblerFactory();
+//  }
+
+namespace android {
+
+struct CasPlugin;
+
+struct CasPluginDescriptor {
+    int32_t CA_system_id;
+    String8 name;
+};
+
+typedef std::vector<uint8_t> CasData;
+typedef std::vector<uint8_t> CasSessionId;
+typedef std::vector<uint8_t> CasEmm;
+typedef std::vector<uint8_t> CasEcm;
+typedef void (*CasPluginCallback)(
+        void *appData,
+        int32_t event,
+        int32_t arg,
+        uint8_t *data,
+        size_t size);
+
+struct CasFactory {
+    CasFactory() {}
+    virtual ~CasFactory() {}
+
+    // Determine if the plugin can handle the CA scheme identified by CA_system_id.
+    virtual bool isSystemIdSupported(
+            int32_t CA_system_id) const = 0;
+
+    // Get a list of the CA schemes supported by the plugin.
+    virtual status_t queryPlugins(
+            std::vector<CasPluginDescriptor> *descriptors) const = 0;
+
+    // Construct a new instance of a CasPlugin given a CA_system_id
+    virtual status_t createPlugin(
+            int32_t CA_system_id,
+            uint64_t appData,
+            CasPluginCallback callback,
+            CasPlugin **plugin) = 0;
+
+private:
+    CasFactory(const CasFactory &);
+    CasFactory &operator=(const CasFactory &); /* NOLINT */
+};
+
+struct CasPlugin {
+    CasPlugin() {}
+    virtual ~CasPlugin() {}
+
+    // Provide the CA private data from a CA_descriptor in the conditional
+    // access table to a CasPlugin.
+    virtual status_t setPrivateData(
+            const CasData &privateData) = 0;
+
+    // Open a session for descrambling a program. The session will receive the
+    // ECM stream corresponding to the CA_PID for the program.
+    virtual status_t openSession(
+            uint16_t program_number,
+            CasSessionId *sessionId) = 0;
+
+    // Open a session for descrambling an elementary stream inside a program.
+    // The session will receive the ECM stream corresponding to the CA_PID for
+    // the stream.
+    virtual status_t openSession(
+            uint16_t program_number,
+            uint16_t elementary_PID,
+            CasSessionId *sessionId) = 0;
+
+    // Close a previously opened session.
+    virtual status_t closeSession(
+            const CasSessionId &sessionId) = 0;
+
+    // Provide the CA private data from a CA_descriptor in the program map
+    // table to a CasPlugin.
+    virtual status_t setSessionPrivateData(
+            const CasSessionId &sessionId,
+            const CasData &privateData) = 0;
+
+    // Process an ECM from the ECM stream for this session’s elementary stream.
+    virtual status_t processEcm(
+            const CasSessionId &sessionId,
+            const CasEcm &ecm) = 0;
+
+    // Process an in-band EMM from the EMM stream.
+    virtual status_t processEmm(
+            const CasEmm &emm) = 0;
+
+    // Deliver an event to the CasPlugin. The format of the event is specific
+    // to the CA scheme and is opaque to the framework.
+    virtual status_t sendEvent(
+            int32_t event,
+            int32_t arg,
+            const CasData &eventData) = 0;
+
+    // Native implementation of the MediaCas Java API provision method.
+    virtual status_t provision(
+            const String8 &provisionString) = 0;
+
+    // Native implementation of the MediaCas Java API refreshEntitlements method
+    virtual status_t refreshEntitlements(
+            int32_t refreshType,
+            const CasData &refreshData) = 0;
+
+private:
+    CasPlugin(const CasPlugin &);
+    CasPlugin &operator=(const CasPlugin &); /* NOLINT */
+};
+
+extern "C" {
+    extern android::CasFactory *createCasFactory();
+}
+
+} // namespace android
+
+#endif // CAS_API_H_
diff --git a/include/media/cas/DescramblerAPI.h b/include/media/cas/DescramblerAPI.h
new file mode 100644
index 0000000..0a51952
--- /dev/null
+++ b/include/media/cas/DescramblerAPI.h
@@ -0,0 +1,105 @@
+/*
+ * 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.
+ */
+
+#ifndef DESCRAMBLER_API_H_
+#define DESCRAMBLER_API_H_
+
+#include <media/stagefright/MediaErrors.h>
+#include <media/cas/CasAPI.h>
+
+namespace android {
+
+struct AString;
+struct DescramblerPlugin;
+
+struct DescramblerFactory {
+    DescramblerFactory() {}
+    virtual ~DescramblerFactory() {}
+
+    // Determine if the plugin can handle the CA scheme identified by CA_system_id.
+    virtual bool isSystemIdSupported(
+            int32_t CA_system_id) const = 0;
+
+    // Construct a new instance of a DescramblerPlugin given a CA_system_id
+    virtual status_t createPlugin(
+            int32_t CA_system_id, DescramblerPlugin **plugin) = 0;
+
+private:
+    DescramblerFactory(const DescramblerFactory &);
+    DescramblerFactory &operator=(const DescramblerFactory &);
+};
+
+struct DescramblerPlugin {
+    enum ScramblingControl {
+        kScrambling_Unscrambled = 0,
+        kScrambling_Reserved    = 1,
+        kScrambling_EvenKey     = 2,
+        kScrambling_OddKey      = 3,
+    };
+
+    struct SubSample {
+        uint32_t mNumBytesOfClearData;
+        uint32_t mNumBytesOfEncryptedData;
+    };
+
+    DescramblerPlugin() {}
+    virtual ~DescramblerPlugin() {}
+
+    // If this method returns false, a non-secure decoder will be used to
+    // decode the data after decryption. The decrypt API below will have
+    // to support insecure decryption of the data (secure = false) for
+    // media data of the given mime type.
+    virtual bool requiresSecureDecoderComponent(const char *mime) const = 0;
+
+    // A MediaCas session may be associated with a MediaCrypto session.  The
+    // associated MediaCas session is used to load decryption keys
+    // into the crypto/cas plugin.  The keys are then referenced by key-id
+    // in the 'key' parameter to the decrypt() method.
+    // Should return NO_ERROR on success, ERROR_DRM_SESSION_NOT_OPENED if
+    // the session is not opened and a code from MediaErrors.h otherwise.
+    virtual status_t setMediaCasSession(const CasSessionId& sessionId) = 0;
+
+    // If the error returned falls into the range
+    // ERROR_DRM_VENDOR_MIN..ERROR_DRM_VENDOR_MAX, errorDetailMsg should be
+    // filled in with an appropriate string.
+    // At the java level these special errors will then trigger a
+    // MediaCodec.CryptoException that gives clients access to both
+    // the error code and the errorDetailMsg.
+    // Returns a non-negative result to indicate the number of bytes written
+    // to the dstPtr, or a negative result to indicate an error.
+    virtual ssize_t descramble(
+            bool secure,
+            ScramblingControl scramblingControl,
+            size_t numSubSamples,
+            const SubSample *subSamples,
+            const void *srcPtr,
+            int32_t srcOffset,
+            void *dstPtr,
+            int32_t dstOffset,
+            AString *errorDetailMsg) = 0;
+
+private:
+    DescramblerPlugin(const DescramblerPlugin &);
+    DescramblerPlugin &operator=(const DescramblerPlugin &);
+};
+
+}  // namespace android
+
+extern "C" {
+    extern android::DescramblerFactory *createDescramblerFactory();
+}
+
+#endif  // DESCRAMBLER_API_H_
diff --git a/include/private/ui/RegionHelper.h b/include/private/ui/RegionHelper.h
index c7c3160..a22b2cb 100644
--- a/include/private/ui/RegionHelper.h
+++ b/include/private/ui/RegionHelper.h
@@ -27,10 +27,10 @@
 class region_operator
 {
 public:
-    typedef typename RECT::value_type TYPE;    
-    static const TYPE max_value = 0x7FFFFFF;
+    typedef typename RECT::value_type TYPE;
+    static const TYPE max_value = std::numeric_limits<TYPE>::max();
 
-    /* 
+    /*
      * Common boolean operations:
      * value is computed as 0b101 op 0b110
      *    other boolean operation are possible, simply compute
diff --git a/include/ui/ANativeObjectBase.h b/include/ui/ANativeObjectBase.h
index 76e850f..640e34b 100644
--- a/include/ui/ANativeObjectBase.h
+++ b/include/ui/ANativeObjectBase.h
@@ -18,9 +18,7 @@
 #define ANDROID_ANDROID_NATIVES_H
 
 #include <sys/types.h>
-#include <string.h>
 
-#include <hardware/gralloc.h>
 #include <system/window.h>
 
 // ---------------------------------------------------------------------------
diff --git a/include/ui/ColorSpace.h b/include/ui/ColorSpace.h
index b1863df..8c4acb7 100644
--- a/include/ui/ColorSpace.h
+++ b/include/ui/ColorSpace.h
@@ -23,10 +23,10 @@
 #include <memory>
 #include <string>
 
-#include <ui/mat3.h>
-#include <ui/scalar.h>
-#include <ui/vec2.h>
-#include <ui/vec3.h>
+#include <math/mat3.h>
+#include <math/scalar.h>
+#include <math/vec2.h>
+#include <math/vec3.h>
 
 namespace android {
 
@@ -212,14 +212,14 @@
         return v;
     }
 
-    const std::string mName;
+    std::string mName;
 
-    const mat3 mRGBtoXYZ;
-    const mat3 mXYZtoRGB;
+    mat3 mRGBtoXYZ;
+    mat3 mXYZtoRGB;
 
-    const transfer_function mOETF;
-    const transfer_function mEOTF;
-    const clamping_function mClamper;
+    transfer_function mOETF;
+    transfer_function mEOTF;
+    clamping_function mClamper;
 
     std::array<float2, 3> mPrimaries;
     float2 mWhitePoint;
diff --git a/include/ui/DisplayInfo.h b/include/ui/DisplayInfo.h
index 842806e..94caf6b 100644
--- a/include/ui/DisplayInfo.h
+++ b/include/ui/DisplayInfo.h
@@ -19,9 +19,8 @@
 
 #include <stdint.h>
 #include <sys/types.h>
-#include <utils/Timers.h>
 
-#include <ui/PixelFormat.h>
+#include <utils/Timers.h>
 
 namespace android {
 
diff --git a/include/ui/Fence.h b/include/ui/Fence.h
index 58df24c..37811bc 100644
--- a/include/ui/Fence.h
+++ b/include/ui/Fence.h
@@ -23,8 +23,6 @@
 #include <utils/RefBase.h>
 #include <utils/Timers.h>
 
-#include <experimental/optional>
-
 namespace android {
 
 class String8;
@@ -105,26 +103,29 @@
     // error occurs then SIGNAL_TIME_INVALID is returned.
     nsecs_t getSignalTime() const;
 
-#if __cplusplus > 201103L
-    // hasSignaled returns whether the fence has signaled yet. Prefer this to
+    enum class Status {
+        Invalid,     // Fence is invalid
+        Unsignaled,  // Fence is valid but has not yet signaled
+        Signaled,    // Fence is valid and has signaled
+    };
+
+    // getStatus() returns whether the fence has signaled yet. Prefer this to
     // getSignalTime() or wait() if all you care about is whether the fence has
-    // signaled. Returns an optional bool, which will have a value if there was
-    // no error.
-    inline std::experimental::optional<bool> hasSignaled() {
+    // signaled.
+    inline Status getStatus() {
         // The sync_wait call underlying wait() has been measured to be
         // significantly faster than the sync_fence_info call underlying
         // getSignalTime(), which might otherwise appear to be the more obvious
         // way to check whether a fence has signaled.
         switch (wait(0)) {
             case NO_ERROR:
-                return true;
+                return Status::Signaled;
             case -ETIME:
-                return false;
+                return Status::Unsignaled;
             default:
-                return {};
+                return Status::Invalid;
         }
     }
-#endif
 
     // Flattenable interface
     size_t getFlattenedSize() const;
diff --git a/include/gfx/FloatRect.h b/include/ui/FloatRect.h
similarity index 96%
rename from include/gfx/FloatRect.h
rename to include/ui/FloatRect.h
index 6be5e22..270675c 100644
--- a/include/gfx/FloatRect.h
+++ b/include/ui/FloatRect.h
@@ -17,10 +17,9 @@
 #pragma once
 
 namespace android {
-namespace gfx {
 
 class FloatRect {
-  public:
+public:
     FloatRect() = default;
     constexpr FloatRect(float _left, float _top, float _right, float _bottom)
       : left(_left), top(_top), right(_right), bottom(_bottom) {}
@@ -38,5 +37,4 @@
     return a.left == b.left && a.top == b.top && a.right == b.right && a.bottom == b.bottom;
 }
 
-}  // namespace gfx
 }  // namespace android
diff --git a/include/ui/Gralloc1.h b/include/ui/Gralloc1.h
index 640e29c..90713b3 100644
--- a/include/ui/Gralloc1.h
+++ b/include/ui/Gralloc1.h
@@ -19,10 +19,17 @@
 
 #define GRALLOC1_LOG_TAG "Gralloc1"
 
-#include <ui/Gralloc1On0Adapter.h>
-
+#include <functional>
+#include <memory>
 #include <unordered_set>
 
+#include <log/log.h>
+
+#include <ui/Fence.h>
+
+#include <hardware/gralloc1.h>
+
+
 namespace std {
     template <>
     struct hash<gralloc1_capability_t> {
@@ -33,10 +40,42 @@
 }
 
 namespace android {
-
+class GraphicBuffer;
 class Fence;
 class GraphicBuffer;
+class Gralloc1On0Adapter;
+} // namespace android
 
+
+// This is not an "official" capability (i.e., it is not found in gralloc1.h),
+// but we will use it to detect that we are running through the adapter, which
+// is capable of collaborating with GraphicBuffer such that queries on a
+// buffer_handle_t succeed
+static const auto GRALLOC1_CAPABILITY_ON_ADAPTER =
+        static_cast<gralloc1_capability_t>(GRALLOC1_LAST_CAPABILITY + 1);
+
+static const auto GRALLOC1_FUNCTION_RETAIN_GRAPHIC_BUFFER =
+        static_cast<gralloc1_function_descriptor_t>(GRALLOC1_LAST_FUNCTION + 1);
+static const auto GRALLOC1_FUNCTION_ALLOCATE_WITH_ID =
+        static_cast<gralloc1_function_descriptor_t>(GRALLOC1_LAST_FUNCTION + 2);
+static const auto GRALLOC1_FUNCTION_LOCK_YCBCR =
+        static_cast<gralloc1_function_descriptor_t>(GRALLOC1_LAST_FUNCTION + 3);
+static const auto GRALLOC1_LAST_ADAPTER_FUNCTION = GRALLOC1_FUNCTION_LOCK_YCBCR;
+
+typedef gralloc1_error_t (*GRALLOC1_PFN_RETAIN_GRAPHIC_BUFFER)(
+        gralloc1_device_t* device, const android::GraphicBuffer* buffer);
+typedef gralloc1_error_t (*GRALLOC1_PFN_ALLOCATE_WITH_ID)(
+        gralloc1_device_t* device, gralloc1_buffer_descriptor_t descriptor,
+        gralloc1_backing_store_t id, buffer_handle_t* outBuffer);
+typedef int32_t /*gralloc1_error_t*/ (*GRALLOC1_PFN_LOCK_YCBCR)(
+        gralloc1_device_t* device, buffer_handle_t buffer,
+        uint64_t /*gralloc1_producer_usage_t*/ producerUsage,
+        uint64_t /*gralloc1_consumer_usage_t*/ consumerUsage,
+        const gralloc1_rect_t* accessRegion, struct android_ycbcr* outYCbCr,
+        int32_t acquireFence);
+
+
+namespace android {
 namespace Gralloc1 {
 
 class Device;
diff --git a/include/ui/Gralloc1On0Adapter.h b/include/ui/Gralloc1On0Adapter.h
index fcd2245..6379a08 100644
--- a/include/ui/Gralloc1On0Adapter.h
+++ b/include/ui/Gralloc1On0Adapter.h
@@ -17,9 +17,11 @@
 #ifndef ANDROID_UI_GRALLOC_1_ON_0_ADAPTER_H
 #define ANDROID_UI_GRALLOC_1_ON_0_ADAPTER_H
 
-#include <ui/Fence.h>
-#include <ui/GraphicBuffer.h>
+#include <log/log.h>
 
+#include <ui/Fence.h>
+
+#include <hardware/gralloc.h>
 #include <hardware/gralloc1.h>
 
 #include <mutex>
@@ -27,35 +29,12 @@
 #include <unordered_map>
 #include <vector>
 
+namespace android {
+class GraphicBuffer;
+} // namespace android
+
 struct gralloc_module_t;
 
-// This is not an "official" capability (i.e., it is not found in gralloc1.h),
-// but we will use it to detect that we are running through the adapter, which
-// is capable of collaborating with GraphicBuffer such that queries on a
-// buffer_handle_t succeed
-static const auto GRALLOC1_CAPABILITY_ON_ADAPTER =
-        static_cast<gralloc1_capability_t>(GRALLOC1_LAST_CAPABILITY + 1);
-
-static const auto GRALLOC1_FUNCTION_RETAIN_GRAPHIC_BUFFER =
-        static_cast<gralloc1_function_descriptor_t>(GRALLOC1_LAST_FUNCTION + 1);
-static const auto GRALLOC1_FUNCTION_ALLOCATE_WITH_ID =
-        static_cast<gralloc1_function_descriptor_t>(GRALLOC1_LAST_FUNCTION + 2);
-static const auto GRALLOC1_FUNCTION_LOCK_YCBCR =
-        static_cast<gralloc1_function_descriptor_t>(GRALLOC1_LAST_FUNCTION + 3);
-static const auto GRALLOC1_LAST_ADAPTER_FUNCTION = GRALLOC1_FUNCTION_LOCK_YCBCR;
-
-typedef gralloc1_error_t (*GRALLOC1_PFN_RETAIN_GRAPHIC_BUFFER)(
-        gralloc1_device_t* device, const android::GraphicBuffer* buffer);
-typedef gralloc1_error_t (*GRALLOC1_PFN_ALLOCATE_WITH_ID)(
-        gralloc1_device_t* device, gralloc1_buffer_descriptor_t descriptor,
-        gralloc1_backing_store_t id, buffer_handle_t* outBuffer);
-typedef int32_t /*gralloc1_error_t*/ (*GRALLOC1_PFN_LOCK_YCBCR)(
-        gralloc1_device_t* device, buffer_handle_t buffer,
-        uint64_t /*gralloc1_producer_usage_t*/ producerUsage,
-        uint64_t /*gralloc1_consumer_usage_t*/ consumerUsage,
-        const gralloc1_rect_t* accessRegion, struct android_ycbcr* outYCbCr,
-        int32_t acquireFence);
-
 namespace android {
 
 class Gralloc1On0Adapter : public gralloc1_device_t
diff --git a/include/ui/GrallocMapper.h b/include/ui/GrallocMapper.h
index 5a23b68..5a0d64b 100644
--- a/include/ui/GrallocMapper.h
+++ b/include/ui/GrallocMapper.h
@@ -17,8 +17,6 @@
 #ifndef ANDROID_UI_GRALLOC_MAPPER_H
 #define ANDROID_UI_GRALLOC_MAPPER_H
 
-#include <memory>
-
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <system/window.h>
 
diff --git a/include/ui/GraphicBuffer.h b/include/ui/GraphicBuffer.h
index 759c9ec..040d1e7 100644
--- a/include/ui/GraphicBuffer.h
+++ b/include/ui/GraphicBuffer.h
@@ -20,13 +20,15 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <string>
+
 #include <ui/ANativeObjectBase.h>
 #include <ui/PixelFormat.h>
 #include <ui/Rect.h>
 #include <utils/Flattenable.h>
 #include <utils/RefBase.h>
 
-#include <string>
+#include <hardware/gralloc.h>
 
 struct ANativeWindowBuffer;
 
diff --git a/include/ui/GraphicBufferAllocator.h b/include/ui/GraphicBufferAllocator.h
index 2ccc44b..e97122b 100644
--- a/include/ui/GraphicBufferAllocator.h
+++ b/include/ui/GraphicBufferAllocator.h
@@ -20,11 +20,14 @@
 
 #include <stdint.h>
 
+#include <memory>
+#include <string>
+
 #include <cutils/native_handle.h>
 
 #include <utils/Errors.h>
 #include <utils/KeyedVector.h>
-#include <utils/threads.h>
+#include <utils/Mutex.h>
 #include <utils/Singleton.h>
 
 #include <ui/Gralloc1.h>
@@ -36,7 +39,6 @@
 class Allocator;
 }
 
-class Gralloc1Loader;
 class GraphicBufferMapper;
 class String8;
 
diff --git a/include/ui/GraphicBufferMapper.h b/include/ui/GraphicBufferMapper.h
index 001769f..b6d4021 100644
--- a/include/ui/GraphicBufferMapper.h
+++ b/include/ui/GraphicBufferMapper.h
@@ -20,10 +20,18 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <memory>
+
 #include <ui/Gralloc1.h>
 
 #include <utils/Singleton.h>
 
+
+// Needed by code that still uses the GRALLOC_USAGE_* constants.
+// when/if we get rid of gralloc, we should provide aliases or fix call sites.
+#include <hardware/gralloc.h>
+
+
 namespace android {
 
 // ---------------------------------------------------------------------------
diff --git a/include/ui/PixelFormat.h b/include/ui/PixelFormat.h
index ab7a9a3..02773d9 100644
--- a/include/ui/PixelFormat.h
+++ b/include/ui/PixelFormat.h
@@ -53,14 +53,15 @@
 
     // real pixel formats supported for rendering -----------------------------
 
-    PIXEL_FORMAT_RGBA_8888   = HAL_PIXEL_FORMAT_RGBA_8888,   // 4x8-bit RGBA
-    PIXEL_FORMAT_RGBX_8888   = HAL_PIXEL_FORMAT_RGBX_8888,   // 4x8-bit RGB0
-    PIXEL_FORMAT_RGB_888     = HAL_PIXEL_FORMAT_RGB_888,     // 3x8-bit RGB
-    PIXEL_FORMAT_RGB_565     = HAL_PIXEL_FORMAT_RGB_565,     // 16-bit RGB
-    PIXEL_FORMAT_BGRA_8888   = HAL_PIXEL_FORMAT_BGRA_8888,   // 4x8-bit BGRA
-    PIXEL_FORMAT_RGBA_5551   = 6,                            // 16-bit ARGB
-    PIXEL_FORMAT_RGBA_4444   = 7,                            // 16-bit ARGB
-    PIXEL_FORMAT_RGBA_FP16   = HAL_PIXEL_FORMAT_RGBA_FP16,   // 64-bit RGBA
+    PIXEL_FORMAT_RGBA_8888    = HAL_PIXEL_FORMAT_RGBA_8888,    // 4x8-bit RGBA
+    PIXEL_FORMAT_RGBX_8888    = HAL_PIXEL_FORMAT_RGBX_8888,    // 4x8-bit RGB0
+    PIXEL_FORMAT_RGB_888      = HAL_PIXEL_FORMAT_RGB_888,      // 3x8-bit RGB
+    PIXEL_FORMAT_RGB_565      = HAL_PIXEL_FORMAT_RGB_565,      // 16-bit RGB
+    PIXEL_FORMAT_BGRA_8888    = HAL_PIXEL_FORMAT_BGRA_8888,    // 4x8-bit BGRA
+    PIXEL_FORMAT_RGBA_5551    = 6,                             // 16-bit ARGB
+    PIXEL_FORMAT_RGBA_4444    = 7,                             // 16-bit ARGB
+    PIXEL_FORMAT_RGBA_FP16    = HAL_PIXEL_FORMAT_RGBA_FP16,    // 64-bit RGBA
+    PIXEL_FORMAT_RGBA_1010102 = HAL_PIXEL_FORMAT_RGBA_1010102, // 32-bit RGBA
 };
 
 typedef int32_t PixelFormat;
diff --git a/include/ui/Rect.h b/include/ui/Rect.h
index ce33d4e..b50e4ec 100644
--- a/include/ui/Rect.h
+++ b/include/ui/Rect.h
@@ -17,12 +17,12 @@
 #ifndef ANDROID_UI_RECT
 #define ANDROID_UI_RECT
 
-#include <gfx/FloatRect.h>
 #include <utils/Flattenable.h>
 #include <utils/Log.h>
 #include <utils/TypeHelpers.h>
 #include <log/log.h>
 
+#include <ui/FloatRect.h>
 #include <ui/Point.h>
 
 #include <android/rect.h>
@@ -45,13 +45,9 @@
     template <typename T>
     inline Rect(T w, T h) {
         if (w > INT32_MAX) {
-            ALOG(LOG_WARN, "Rect",
-                    "Width %u too large for Rect class, clamping", w);
             w = INT32_MAX;
         }
         if (h > INT32_MAX) {
-            ALOG(LOG_WARN, "Rect",
-                    "Height %u too large for Rect class, clamping", h);
             h = INT32_MAX;
         }
         left = top = 0;
@@ -185,7 +181,7 @@
     inline int32_t height() const { return getHeight(); }
     inline void set(const Rect& rhs) { operator = (rhs); }
 
-    gfx::FloatRect toFloatRect() const {
+    FloatRect toFloatRect() const {
         return {static_cast<float>(left), static_cast<float>(top),
                 static_cast<float>(right), static_cast<float>(bottom)};
     }
diff --git a/libs/arect/Android.bp b/libs/arect/Android.bp
new file mode 100644
index 0000000..0d25176
--- /dev/null
+++ b/libs/arect/Android.bp
@@ -0,0 +1,27 @@
+// 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.
+
+ndk_headers {
+    name: "libarect_headers",
+    from: "include/android",
+    to: "android",
+    srcs: ["include/android/*.h"],
+    license: "NOTICE",
+}
+
+cc_library_static {
+    name: "libarect",
+    host_supported: true,
+    export_include_dirs: ["include"],
+}
diff --git a/libs/arect/MODULE_LICENSE_APACHE2 b/libs/arect/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libs/arect/MODULE_LICENSE_APACHE2
diff --git a/libs/arect/NOTICE b/libs/arect/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/libs/arect/NOTICE
@@ -0,0 +1,190 @@
+
+   Copyright (c) 2005-2008, 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.
+
+   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.
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
diff --git a/include/android/rect.h b/libs/arect/include/android/rect.h
similarity index 100%
rename from include/android/rect.h
rename to libs/arect/include/android/rect.h
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index ddf1072..8f9c38a 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -107,6 +107,7 @@
         "libGLESv2",
         "libui",
         "libutils",
+        "libnativewindow",
         "liblog",
     ],
 
diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index f76a282..13692eb 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -31,6 +31,13 @@
 
 BufferQueue::ProxyConsumerListener::~ProxyConsumerListener() {}
 
+void BufferQueue::ProxyConsumerListener::onDisconnect() {
+    sp<ConsumerListener> listener(mConsumerListener.promote());
+    if (listener != NULL) {
+        listener->onDisconnect();
+    }
+}
+
 void BufferQueue::ProxyConsumerListener::onFrameAvailable(
         const BufferItem& item) {
     sp<ConsumerListener> listener(mConsumerListener.promote());
diff --git a/libs/gui/BufferQueueProducer.cpp b/libs/gui/BufferQueueProducer.cpp
index 3f69b1f..27ced61 100644
--- a/libs/gui/BufferQueueProducer.cpp
+++ b/libs/gui/BufferQueueProducer.cpp
@@ -1222,6 +1222,9 @@
         }
 
         if (api == BufferQueueCore::CURRENTLY_CONNECTED_API) {
+            if (mCore->mConnectedApi == NATIVE_WINDOW_API_MEDIA) {
+                ALOGD("About to force-disconnect API_MEDIA, mode=%d", mode);
+            }
             api = mCore->mConnectedApi;
             // If we're asked to disconnect the currently connected api but
             // nobody is connected, it's not really an error.
@@ -1272,6 +1275,7 @@
     // Call back without lock held
     if (listener != NULL) {
         listener->onBuffersReleased();
+        listener->onDisconnect();
     }
 
     return status;
diff --git a/libs/gui/ConsumerBase.cpp b/libs/gui/ConsumerBase.cpp
index be2b1af..c26de66 100644
--- a/libs/gui/ConsumerBase.cpp
+++ b/libs/gui/ConsumerBase.cpp
@@ -318,16 +318,16 @@
         return OK;
     }
 
-    auto signaled = mSlots[slot].mFence->hasSignaled();
+    auto status = mSlots[slot].mFence->getStatus();
 
-    if (!signaled) {
+    if (status == Fence::Status::Invalid) {
         CB_LOGE("fence has invalid state");
         return BAD_VALUE;
     }
 
-    if (*signaled) {
+    if (status == Fence::Status::Signaled) {
         mSlots[slot].mFence = fence;
-    } else {
+    } else {  // status == Fence::Status::Unsignaled
         char fenceName[32] = {};
         snprintf(fenceName, 32, "%.28s:%d", mName.string(), slot);
         sp<Fence> mergedFence = Fence::merge(
diff --git a/libs/gui/CpuConsumer.cpp b/libs/gui/CpuConsumer.cpp
index a9bafef..ae7c65c 100644
--- a/libs/gui/CpuConsumer.cpp
+++ b/libs/gui/CpuConsumer.cpp
@@ -65,6 +65,7 @@
         case HAL_PIXEL_FORMAT_RGBA_8888:
         case HAL_PIXEL_FORMAT_RGBX_8888:
         case HAL_PIXEL_FORMAT_RGBA_FP16:
+        case HAL_PIXEL_FORMAT_RGBA_1010102:
         case HAL_PIXEL_FORMAT_RGB_888:
         case HAL_PIXEL_FORMAT_RGB_565:
         case HAL_PIXEL_FORMAT_BGRA_8888:
diff --git a/libs/gui/FrameTimestamps.cpp b/libs/gui/FrameTimestamps.cpp
index a6fa38a..019a11e 100644
--- a/libs/gui/FrameTimestamps.cpp
+++ b/libs/gui/FrameTimestamps.cpp
@@ -16,6 +16,8 @@
 
 #include <gui/FrameTimestamps.h>
 
+#define LOG_TAG "FrameEvents"
+
 #include <cutils/compiler.h>  // For CC_[UN]LIKELY
 #include <inttypes.h>
 #include <utils/Log.h>
@@ -33,19 +35,19 @@
 // ============================================================================
 
 bool FrameEvents::hasPostedInfo() const {
-    return Fence::isValidTimestamp(postedTime);
+    return FrameEvents::isValidTimestamp(postedTime);
 }
 
 bool FrameEvents::hasRequestedPresentInfo() const {
-    return Fence::isValidTimestamp(requestedPresentTime);
+    return FrameEvents::isValidTimestamp(requestedPresentTime);
 }
 
 bool FrameEvents::hasLatchInfo() const {
-    return Fence::isValidTimestamp(latchTime);
+    return FrameEvents::isValidTimestamp(latchTime);
 }
 
 bool FrameEvents::hasFirstRefreshStartInfo() const {
-    return Fence::isValidTimestamp(firstRefreshStartTime);
+    return FrameEvents::isValidTimestamp(firstRefreshStartTime);
 }
 
 bool FrameEvents::hasLastRefreshStartInfo() const {
@@ -56,7 +58,7 @@
 }
 
 bool FrameEvents::hasDequeueReadyInfo() const {
-    return Fence::isValidTimestamp(dequeueReadyTime);
+    return FrameEvents::isValidTimestamp(dequeueReadyTime);
 }
 
 bool FrameEvents::hasAcquireInfo() const {
@@ -117,21 +119,21 @@
     outString.appendFormat("--- Req. Present\t%" PRId64 "\n", requestedPresentTime);
 
     outString.appendFormat("--- Latched     \t");
-    if (Fence::isValidTimestamp(latchTime)) {
+    if (FrameEvents::isValidTimestamp(latchTime)) {
         outString.appendFormat("%" PRId64 "\n", latchTime);
     } else {
         outString.appendFormat("Pending\n");
     }
 
     outString.appendFormat("--- Refresh (First)\t");
-    if (Fence::isValidTimestamp(firstRefreshStartTime)) {
+    if (FrameEvents::isValidTimestamp(firstRefreshStartTime)) {
         outString.appendFormat("%" PRId64 "\n", firstRefreshStartTime);
     } else {
         outString.appendFormat("Pending\n");
     }
 
     outString.appendFormat("--- Refresh (Last)\t");
-    if (Fence::isValidTimestamp(lastRefreshStartTime)) {
+    if (FrameEvents::isValidTimestamp(lastRefreshStartTime)) {
         outString.appendFormat("%" PRId64 "\n", lastRefreshStartTime);
     } else {
         outString.appendFormat("Pending\n");
@@ -147,7 +149,7 @@
             !addRetireCalled, *displayRetireFence);
 
     outString.appendFormat("--- DequeueReady  \t");
-    if (Fence::isValidTimestamp(dequeueReadyTime)) {
+    if (FrameEvents::isValidTimestamp(dequeueReadyTime)) {
         outString.appendFormat("%" PRId64 "\n", dequeueReadyTime);
     } else {
         outString.appendFormat("Pending\n");
@@ -256,8 +258,7 @@
         uint64_t frameNumber, std::shared_ptr<FenceTime>&& acquire) {
     FrameEvents* frame = getFrame(frameNumber, &mAcquireOffset);
     if (frame == nullptr) {
-        ALOGE("ProducerFrameEventHistory::updateAcquireFence: "
-              "Did not find frame.");
+        ALOGE("updateAcquireFence: Did not find frame.");
         return;
     }
 
@@ -277,8 +278,8 @@
 
     for (auto& d : delta.mDeltas) {
         // Avoid out-of-bounds access.
-        if (d.mIndex >= mFrames.size()) {
-            ALOGE("ProducerFrameEventHistory::applyDelta: Bad index.");
+        if (CC_UNLIKELY(d.mIndex >= mFrames.size())) {
+            ALOGE("applyDelta: Bad index.");
             return;
         }
 
@@ -328,7 +329,7 @@
 
 void ProducerFrameEventHistory::applyFenceDelta(FenceTimeline* timeline,
         std::shared_ptr<FenceTime>* dst, const FenceTime::Snapshot& src) const {
-    if (CC_UNLIKELY(dst == nullptr)) {
+    if (CC_UNLIKELY(dst == nullptr || dst->get() == nullptr)) {
         ALOGE("applyFenceDelta: dst is null.");
         return;
     }
@@ -337,9 +338,7 @@
         case FenceTime::Snapshot::State::EMPTY:
             return;
         case FenceTime::Snapshot::State::FENCE:
-            if (CC_UNLIKELY((*dst)->isValid())) {
-                ALOGE("applyFenceDelta: Unexpected fence.");
-            }
+            ALOGE_IF((*dst)->isValid(), "applyFenceDelta: Unexpected fence.");
             *dst = createFenceTime(src.fence);
             timeline->push(*dst);
             return;
@@ -365,6 +364,11 @@
 
 ConsumerFrameEventHistory::~ConsumerFrameEventHistory() = default;
 
+void ConsumerFrameEventHistory::onDisconnect() {
+    mCurrentConnectId++;
+    mProducerWantsEvents = false;
+}
+
 void ConsumerFrameEventHistory::initializeCompositorTiming(
         const CompositorTiming& compositorTiming) {
     mCompositorTiming = compositorTiming;
@@ -373,6 +377,7 @@
 void ConsumerFrameEventHistory::addQueue(const NewFrameEventsEntry& newEntry) {
     // Overwrite all fields of the frame with default values unless set here.
     FrameEvents newTimestamps;
+    newTimestamps.connectId = mCurrentConnectId;
     newTimestamps.frameNumber = newEntry.frameNumber;
     newTimestamps.postedTime = newEntry.postedTime;
     newTimestamps.requestedPresentTime = newEntry.requestedPresentTime;
@@ -409,7 +414,7 @@
     }
     frame->lastRefreshStartTime = refreshStartTime;
     mFramesDirty[mCompositionOffset].setDirty<FrameEvent::LAST_REFRESH_START>();
-    if (!Fence::isValidTimestamp(frame->firstRefreshStartTime)) {
+    if (!FrameEvents::isValidTimestamp(frame->firstRefreshStartTime)) {
         frame->firstRefreshStartTime = refreshStartTime;
         mFramesDirty[mCompositionOffset].setDirty<FrameEvent::FIRST_REFRESH_START>();
     }
@@ -431,7 +436,7 @@
     if (!frame->addPostCompositeCalled) {
         frame->addPostCompositeCalled = true;
         frame->gpuCompositionDoneFence = gpuCompositionDone;
-        mFramesDirty[mCompositionOffset].setDirty<FrameEvent::GL_COMPOSITION_DONE>();
+        mFramesDirty[mCompositionOffset].setDirty<FrameEvent::GPU_COMPOSITION_DONE>();
         if (!frame->displayPresentFence->isValid()) {
             frame->displayPresentFence = displayPresent;
             mFramesDirty[mCompositionOffset].setDirty<FrameEvent::DISPLAY_PRESENT>();
@@ -455,7 +460,7 @@
         nsecs_t dequeueReadyTime, std::shared_ptr<FenceTime>&& release) {
     FrameEvents* frame = getFrame(frameNumber, &mReleaseOffset);
     if (frame == nullptr) {
-        ALOGE("ConsumerFrameEventHistory::addRelease: Did not find frame.");
+        ALOGE_IF(mProducerWantsEvents, "addRelease: Did not find frame.");
         return;
     }
     frame->addReleaseCalled = true;
@@ -470,13 +475,19 @@
     mProducerWantsEvents = true;
     size_t i = static_cast<size_t>(std::distance(mFrames.begin(), frame));
     if (mFramesDirty[i].anyDirty()) {
-        delta->mDeltas.emplace_back(i, *frame, mFramesDirty[i]);
+        // Make sure only to send back deltas for the current connection
+        // since the producer won't have the correct state to apply a delta
+        // from a previous connection.
+        if (mFrames[i].connectId == mCurrentConnectId) {
+            delta->mDeltas.emplace_back(i, *frame, mFramesDirty[i]);
+        }
         mFramesDirty[i].reset();
     }
 }
 
 void ConsumerFrameEventHistory::getAndResetDelta(
         FrameEventHistoryDelta* delta) {
+    mProducerWantsEvents = true;
     delta->mCompositorTiming = mCompositorTiming;
 
     // Write these in order of frame number so that it is easy to
@@ -512,7 +523,7 @@
       mFirstRefreshStartTime(frameTimestamps.firstRefreshStartTime),
       mLastRefreshStartTime(frameTimestamps.lastRefreshStartTime),
       mDequeueReadyTime(frameTimestamps.dequeueReadyTime) {
-    if (dirtyFields.isDirty<FrameEvent::GL_COMPOSITION_DONE>()) {
+    if (dirtyFields.isDirty<FrameEvent::GPU_COMPOSITION_DONE>()) {
         mGpuCompositionDoneFence =
                 frameTimestamps.gpuCompositionDoneFence->getSnapshot();
     }
@@ -648,7 +659,7 @@
     mCompositorTiming = src.mCompositorTiming;
 
     if (CC_UNLIKELY(!mDeltas.empty())) {
-        ALOGE("FrameEventHistoryDelta: Clobbering history.");
+        ALOGE("FrameEventHistoryDelta assign clobbering history.");
     }
     mDeltas = std::move(src.mDeltas);
     ALOGE_IF(src.mDeltas.empty(), "Source mDeltas not empty.");
diff --git a/libs/gui/GLConsumer.cpp b/libs/gui/GLConsumer.cpp
index 9532c52..55e0d26 100644
--- a/libs/gui/GLConsumer.cpp
+++ b/libs/gui/GLConsumer.cpp
@@ -863,6 +863,7 @@
                 case PIXEL_FORMAT_RGBA_8888:
                 case PIXEL_FORMAT_RGBX_8888:
                 case PIXEL_FORMAT_RGBA_FP16:
+                case PIXEL_FORMAT_RGBA_1010102:
                 case PIXEL_FORMAT_RGB_888:
                 case PIXEL_FORMAT_RGB_565:
                 case PIXEL_FORMAT_BGRA_8888:
diff --git a/libs/gui/IConsumerListener.cpp b/libs/gui/IConsumerListener.cpp
index 3d893b1..8cadc4d 100644
--- a/libs/gui/IConsumerListener.cpp
+++ b/libs/gui/IConsumerListener.cpp
@@ -28,7 +28,8 @@
 // ---------------------------------------------------------------------------
 
 enum {
-    ON_FRAME_AVAILABLE = IBinder::FIRST_CALL_TRANSACTION,
+    ON_DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
+    ON_FRAME_AVAILABLE,
     ON_BUFFER_RELEASED,
     ON_SIDEBAND_STREAM_CHANGED,
     GET_FRAME_TIMESTAMPS
@@ -43,6 +44,12 @@
 
     virtual ~BpConsumerListener();
 
+    virtual void onDisconnect() {
+        Parcel data, reply;
+        data.writeInterfaceToken(IConsumerListener::getInterfaceDescriptor());
+        remote()->transact(ON_DISCONNECT, data, &reply, IBinder::FLAG_ONEWAY);
+    }
+
     virtual void onFrameAvailable(const BufferItem& item) {
         Parcel data, reply;
         data.writeInterfaceToken(IConsumerListener::getInterfaceDescriptor());
@@ -75,6 +82,10 @@
     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
 {
     switch(code) {
+        case ON_DISCONNECT: {
+            CHECK_INTERFACE(IConsumerListener, data, reply);
+            onDisconnect();
+            return NO_ERROR; }
         case ON_FRAME_AVAILABLE: {
             CHECK_INTERFACE(IConsumerListener, data, reply);
             BufferItem item;
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index d285ef0..efb1524 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -196,7 +196,7 @@
         const nsecs_t* outLatchTime,
         const nsecs_t* outFirstRefreshStartTime,
         const nsecs_t* outLastRefreshStartTime,
-        const nsecs_t* outGlCompositionDoneTime,
+        const nsecs_t* outGpuCompositionDoneTime,
         const nsecs_t* outDisplayPresentTime,
         const nsecs_t* outDisplayRetireTime,
         const nsecs_t* outDequeueReadyTime,
@@ -204,7 +204,7 @@
     bool checkForLatch = (outLatchTime != nullptr) && !e->hasLatchInfo();
     bool checkForFirstRefreshStart = (outFirstRefreshStartTime != nullptr) &&
             !e->hasFirstRefreshStartInfo();
-    bool checkForGlCompositionDone = (outGlCompositionDoneTime != nullptr) &&
+    bool checkForGpuCompositionDone = (outGpuCompositionDoneTime != nullptr) &&
             !e->hasGpuCompositionDoneInfo();
     bool checkForDisplayPresent = (outDisplayPresentTime != nullptr) &&
             !e->hasDisplayPresentInfo();
@@ -223,14 +223,14 @@
 
     // RequestedPresent and Acquire info are always available producer-side.
     return checkForLatch || checkForFirstRefreshStart ||
-            checkForLastRefreshStart || checkForGlCompositionDone ||
+            checkForLastRefreshStart || checkForGpuCompositionDone ||
             checkForDisplayPresent || checkForDisplayRetire ||
             checkForDequeueReady || checkForRelease;
 }
 
 static void getFrameTimestamp(nsecs_t *dst, const nsecs_t& src) {
     if (dst != nullptr) {
-        *dst = Fence::isValidTimestamp(src) ? src : 0;
+        *dst = FrameEvents::isValidTimestamp(src) ? src : 0;
     }
 }
 
@@ -244,7 +244,7 @@
 status_t Surface::getFrameTimestamps(uint64_t frameNumber,
         nsecs_t* outRequestedPresentTime, nsecs_t* outAcquireTime,
         nsecs_t* outLatchTime, nsecs_t* outFirstRefreshStartTime,
-        nsecs_t* outLastRefreshStartTime, nsecs_t* outGlCompositionDoneTime,
+        nsecs_t* outLastRefreshStartTime, nsecs_t* outGpuCompositionDoneTime,
         nsecs_t* outDisplayPresentTime, nsecs_t* outDisplayRetireTime,
         nsecs_t* outDequeueReadyTime, nsecs_t* outReleaseTime) {
     ATRACE_CALL();
@@ -274,7 +274,7 @@
     // Update our cache of events if the requested events are not available.
     if (checkConsumerForUpdates(events, mLastFrameNumber,
             outLatchTime, outFirstRefreshStartTime, outLastRefreshStartTime,
-            outGlCompositionDoneTime, outDisplayPresentTime,
+            outGpuCompositionDoneTime, outDisplayPresentTime,
             outDisplayRetireTime, outDequeueReadyTime, outReleaseTime)) {
         FrameEventHistoryDelta delta;
         mGraphicBufferProducer->getFrameTimestamps(&delta);
@@ -296,7 +296,7 @@
 
     getFrameTimestampFence(outAcquireTime, events->acquireFence);
     getFrameTimestampFence(
-            outGlCompositionDoneTime, events->gpuCompositionDoneFence);
+            outGpuCompositionDoneTime, events->gpuCompositionDoneFence);
     getFrameTimestampFence(
             outDisplayPresentTime, events->displayPresentFence);
     getFrameTimestampFence(outDisplayRetireTime, events->displayRetireFence);
@@ -1032,7 +1032,7 @@
     nsecs_t* outLatchTime = va_arg(args, int64_t*);
     nsecs_t* outFirstRefreshStartTime = va_arg(args, int64_t*);
     nsecs_t* outLastRefreshStartTime = va_arg(args, int64_t*);
-    nsecs_t* outGlCompositionDoneTime = va_arg(args, int64_t*);
+    nsecs_t* outGpuCompositionDoneTime = va_arg(args, int64_t*);
     nsecs_t* outDisplayPresentTime = va_arg(args, int64_t*);
     nsecs_t* outDisplayRetireTime = va_arg(args, int64_t*);
     nsecs_t* outDequeueReadyTime = va_arg(args, int64_t*);
@@ -1040,7 +1040,7 @@
     return getFrameTimestamps(frameId,
             outRequestedPresentTime, outAcquireTime, outLatchTime,
             outFirstRefreshStartTime, outLastRefreshStartTime,
-            outGlCompositionDoneTime, outDisplayPresentTime,
+            outGpuCompositionDoneTime, outDisplayPresentTime,
             outDisplayRetireTime, outDequeueReadyTime, outReleaseTime);
 }
 
diff --git a/libs/gui/tests/Android.bp b/libs/gui/tests/Android.bp
index 092d597..5944110 100644
--- a/libs/gui/tests/Android.bp
+++ b/libs/gui/tests/Android.bp
@@ -15,7 +15,6 @@
         "IGraphicBufferProducer_test.cpp",
         "MultiTextureConsumer_test.cpp",
         "Sensor_test.cpp",
-        "SRGB_test.cpp",
         "StreamSplitter_test.cpp",
         "SurfaceTextureClient_test.cpp",
         "SurfaceTextureFBO_test.cpp",
@@ -37,5 +36,6 @@
         "libgui",
         "libui",
         "libutils",
+        "libnativewindow"
     ],
 }
diff --git a/libs/gui/tests/DummyConsumer.h b/libs/gui/tests/DummyConsumer.h
index 0511e16..502bdf9 100644
--- a/libs/gui/tests/DummyConsumer.h
+++ b/libs/gui/tests/DummyConsumer.h
@@ -19,9 +19,9 @@
 namespace android {
 
 struct DummyConsumer : public BnConsumerListener {
-    virtual void onFrameAvailable(const BufferItem& /* item */) {}
-    virtual void onBuffersReleased() {}
-    virtual void onSidebandStreamChanged() {}
+    void onFrameAvailable(const BufferItem& /* item */) override {}
+    void onBuffersReleased() override {}
+    void onSidebandStreamChanged() override {}
 };
 
 } // namespace android
diff --git a/libs/gui/tests/IGraphicBufferProducer_test.cpp b/libs/gui/tests/IGraphicBufferProducer_test.cpp
index 0329a6d..aa071f6 100644
--- a/libs/gui/tests/IGraphicBufferProducer_test.cpp
+++ b/libs/gui/tests/IGraphicBufferProducer_test.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "IGraphicBufferProducer_test"
 //#define LOG_NDEBUG 0
 
+#include "DummyConsumer.h"
+
 #include <gtest/gtest.h>
 
 #include <utils/String8.h>
@@ -64,12 +66,6 @@
     const sp<Fence> QUEUE_BUFFER_INPUT_FENCE = Fence::NO_FENCE;
 }; // namespace anonymous
 
-struct DummyConsumer : public BnConsumerListener {
-    virtual void onFrameAvailable(const BufferItem& /* item */) {}
-    virtual void onBuffersReleased() {}
-    virtual void onSidebandStreamChanged() {}
-};
-
 class IGraphicBufferProducerTest : public ::testing::Test {
 protected:
 
diff --git a/libs/gui/tests/SRGB_test.cpp b/libs/gui/tests/SRGB_test.cpp
deleted file mode 100644
index c2640cd..0000000
--- a/libs/gui/tests/SRGB_test.cpp
+++ /dev/null
@@ -1,486 +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_TAG "SRGB_test"
-//#define LOG_NDEBUG 0
-
-// Ignore for this file because it flags every instance of
-// ASSERT_EQ(GL_NO_ERROR, glGetError());
-#pragma clang diagnostic ignored "-Wsign-compare"
-
-#include "GLTest.h"
-
-#include <math.h>
-
-#include <gui/CpuConsumer.h>
-#include <gui/Surface.h>
-#include <gui/SurfaceComposerClient.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-#include <GLES3/gl3.h>
-
-#include <android/native_window.h>
-
-#include <gtest/gtest.h>
-
-namespace android {
-
-class SRGBTest : public ::testing::Test {
-protected:
-    // Class constants
-    enum {
-        DISPLAY_WIDTH = 512,
-        DISPLAY_HEIGHT = 512,
-        PIXEL_SIZE = 4, // bytes or components
-        DISPLAY_SIZE = DISPLAY_WIDTH * DISPLAY_HEIGHT * PIXEL_SIZE,
-        ALPHA_VALUE = 223, // should be in [0, 255]
-        TOLERANCE = 1,
-    };
-    static const char SHOW_DEBUG_STRING[];
-
-    SRGBTest() :
-            mInputSurface(), mCpuConsumer(), mLockedBuffer(),
-            mEglDisplay(EGL_NO_DISPLAY), mEglConfig(),
-            mEglContext(EGL_NO_CONTEXT), mEglSurface(EGL_NO_SURFACE),
-            mComposerClient(), mSurfaceControl(), mOutputSurface() {
-    }
-
-    virtual ~SRGBTest() {
-        if (mEglDisplay != EGL_NO_DISPLAY) {
-            if (mEglSurface != EGL_NO_SURFACE) {
-                eglDestroySurface(mEglDisplay, mEglSurface);
-            }
-            if (mEglContext != EGL_NO_CONTEXT) {
-                eglDestroyContext(mEglDisplay, mEglContext);
-            }
-            eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
-                    EGL_NO_CONTEXT);
-            eglTerminate(mEglDisplay);
-        }
-    }
-
-    virtual void SetUp() {
-        sp<IGraphicBufferProducer> producer;
-        sp<IGraphicBufferConsumer> consumer;
-        BufferQueue::createBufferQueue(&producer, &consumer);
-        ASSERT_EQ(NO_ERROR, consumer->setDefaultBufferSize(
-                DISPLAY_WIDTH, DISPLAY_HEIGHT));
-        mCpuConsumer = new CpuConsumer(consumer, 1);
-        String8 name("CpuConsumer_for_SRGBTest");
-        mCpuConsumer->setName(name);
-        mInputSurface = new Surface(producer);
-
-        ASSERT_NO_FATAL_FAILURE(createEGLSurface(mInputSurface.get()));
-        ASSERT_NO_FATAL_FAILURE(createDebugSurface());
-    }
-
-    virtual void TearDown() {
-        ASSERT_NO_FATAL_FAILURE(copyToDebugSurface());
-        ASSERT_TRUE(mLockedBuffer.data != NULL);
-        ASSERT_EQ(NO_ERROR, mCpuConsumer->unlockBuffer(mLockedBuffer));
-    }
-
-    static float linearToSRGB(float l) {
-        if (l <= 0.0031308f) {
-            return l * 12.92f;
-        } else {
-            return 1.055f * pow(l, (1 / 2.4f)) - 0.055f;
-        }
-    }
-
-    static float srgbToLinear(float s) {
-        if (s <= 0.04045) {
-            return s / 12.92f;
-        } else {
-            return pow(((s + 0.055f) / 1.055f), 2.4f);
-        }
-    }
-
-    static uint8_t srgbToLinear(uint8_t u) {
-        float f = u / 255.0f;
-        return static_cast<uint8_t>(srgbToLinear(f) * 255.0f + 0.5f);
-    }
-
-    void fillTexture(bool writeAsSRGB) {
-        uint8_t* textureData = new uint8_t[DISPLAY_SIZE];
-
-        for (int y = 0; y < DISPLAY_HEIGHT; ++y) {
-            for (int x = 0; x < DISPLAY_WIDTH; ++x) {
-                float realValue = static_cast<float>(x) / (DISPLAY_WIDTH - 1);
-                realValue *= ALPHA_VALUE / 255.0f; // Premultiply by alpha
-                if (writeAsSRGB) {
-                    realValue = linearToSRGB(realValue);
-                }
-
-                int offset = (y * DISPLAY_WIDTH + x) * PIXEL_SIZE;
-                for (int c = 0; c < 3; ++c) {
-                    uint8_t intValue = static_cast<uint8_t>(
-                            realValue * 255.0f + 0.5f);
-                    textureData[offset + c] = intValue;
-                }
-                textureData[offset + 3] = ALPHA_VALUE;
-            }
-        }
-
-        glTexImage2D(GL_TEXTURE_2D, 0, writeAsSRGB ? GL_SRGB8_ALPHA8 : GL_RGBA8,
-                DISPLAY_WIDTH, DISPLAY_HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE,
-                textureData);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        delete[] textureData;
-    }
-
-    void initShaders() {
-        static const char vertexSource[] =
-            "attribute vec4 vPosition;\n"
-            "varying vec2 texCoords;\n"
-            "void main() {\n"
-            "  texCoords = 0.5 * (vPosition.xy + vec2(1.0, 1.0));\n"
-            "  gl_Position = vPosition;\n"
-            "}\n";
-
-        static const char fragmentSource[] =
-            "precision mediump float;\n"
-            "uniform sampler2D texSampler;\n"
-            "varying vec2 texCoords;\n"
-            "void main() {\n"
-            "  gl_FragColor = texture2D(texSampler, texCoords);\n"
-            "}\n";
-
-        GLuint program;
-        {
-            SCOPED_TRACE("Creating shader program");
-            ASSERT_NO_FATAL_FAILURE(GLTest::createProgram(
-                    vertexSource, fragmentSource, &program));
-        }
-
-        GLint positionHandle = glGetAttribLocation(program, "vPosition");
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        ASSERT_NE(-1, positionHandle);
-
-        GLint samplerHandle = glGetUniformLocation(program, "texSampler");
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        ASSERT_NE(-1, samplerHandle);
-
-        static const GLfloat vertices[] = {
-            -1.0f, 1.0f,
-            -1.0f, -1.0f,
-            1.0f, -1.0f,
-            1.0f, 1.0f,
-        };
-
-        glVertexAttribPointer(positionHandle, 2, GL_FLOAT, GL_FALSE, 0, vertices);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glEnableVertexAttribArray(positionHandle);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        glUseProgram(program);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glUniform1i(samplerHandle, 0);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        GLuint textureHandle;
-        glGenTextures(1, &textureHandle);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glBindTexture(GL_TEXTURE_2D, textureHandle);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-    }
-
-    void drawTexture(bool asSRGB, GLint x, GLint y, GLsizei width,
-            GLsizei height) {
-        ASSERT_NO_FATAL_FAILURE(fillTexture(asSRGB));
-        glViewport(x, y, width, height);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-        ASSERT_EQ(GL_NO_ERROR, glGetError());
-    }
-
-    void checkLockedBuffer(PixelFormat format, android_dataspace dataSpace) {
-        ASSERT_EQ(mLockedBuffer.format, format);
-        ASSERT_EQ(mLockedBuffer.width, DISPLAY_WIDTH);
-        ASSERT_EQ(mLockedBuffer.height, DISPLAY_HEIGHT);
-        ASSERT_EQ(mLockedBuffer.dataSpace, dataSpace);
-    }
-
-    static bool withinTolerance(int a, int b) {
-        int diff = a - b;
-        return diff >= 0 ? diff <= TOLERANCE : -diff <= TOLERANCE;
-    }
-
-    // Primary producer and consumer
-    sp<Surface> mInputSurface;
-    sp<CpuConsumer> mCpuConsumer;
-    CpuConsumer::LockedBuffer mLockedBuffer;
-
-    EGLDisplay mEglDisplay;
-    EGLConfig mEglConfig;
-    EGLContext mEglContext;
-    EGLSurface mEglSurface;
-
-    // Auxiliary display output
-    sp<SurfaceComposerClient> mComposerClient;
-    sp<SurfaceControl> mSurfaceControl;
-    sp<Surface> mOutputSurface;
-
-private:
-    void createEGLSurface(Surface* inputSurface) {
-        mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_NE(EGL_NO_DISPLAY, mEglDisplay);
-
-        EXPECT_TRUE(eglInitialize(mEglDisplay, NULL, NULL));
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-        static const EGLint configAttribs[] = {
-            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
-            EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT_KHR,
-            EGL_RED_SIZE, 8,
-            EGL_GREEN_SIZE, 8,
-            EGL_BLUE_SIZE, 8,
-            EGL_ALPHA_SIZE, 8,
-            EGL_NONE };
-
-        EGLint numConfigs = 0;
-        EXPECT_TRUE(eglChooseConfig(mEglDisplay, configAttribs, &mEglConfig, 1,
-                &numConfigs));
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_GT(numConfigs, 0);
-
-        static const EGLint contextAttribs[] = {
-            EGL_CONTEXT_CLIENT_VERSION, 3,
-            EGL_NONE } ;
-
-        mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT,
-                contextAttribs);
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_NE(EGL_NO_CONTEXT, mEglContext);
-
-        mEglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig,
-                inputSurface, NULL);
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-        ASSERT_NE(EGL_NO_SURFACE, mEglSurface);
-
-        EXPECT_TRUE(eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface,
-                mEglContext));
-        ASSERT_EQ(EGL_SUCCESS, eglGetError());
-    }
-
-    void createDebugSurface() {
-        if (getenv(SHOW_DEBUG_STRING) == NULL) return;
-
-        mComposerClient = new SurfaceComposerClient;
-        ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
-
-        mSurfaceControl = mComposerClient->createSurface(
-                String8("SRGBTest Surface"), DISPLAY_WIDTH, DISPLAY_HEIGHT,
-                PIXEL_FORMAT_RGBA_8888);
-
-        ASSERT_TRUE(mSurfaceControl != NULL);
-        ASSERT_TRUE(mSurfaceControl->isValid());
-
-        SurfaceComposerClient::openGlobalTransaction();
-        ASSERT_EQ(NO_ERROR, mSurfaceControl->setLayer(0x7FFFFFFF));
-        ASSERT_EQ(NO_ERROR, mSurfaceControl->show());
-        SurfaceComposerClient::closeGlobalTransaction();
-
-        ANativeWindow_Buffer outBuffer;
-        ARect inOutDirtyBounds;
-        mOutputSurface = mSurfaceControl->getSurface();
-        mOutputSurface->lock(&outBuffer, &inOutDirtyBounds);
-        uint8_t* bytePointer = reinterpret_cast<uint8_t*>(outBuffer.bits);
-        for (int y = 0; y < outBuffer.height; ++y) {
-            int rowOffset = y * outBuffer.stride; // pixels
-            for (int x = 0; x < outBuffer.width; ++x) {
-                int colOffset = (rowOffset + x) * PIXEL_SIZE; // bytes
-                for (int c = 0; c < PIXEL_SIZE; ++c) {
-                    int offset = colOffset + c;
-                    bytePointer[offset] = ((c + 1) * 56) - 1;
-                }
-            }
-        }
-        mOutputSurface->unlockAndPost();
-    }
-
-    void copyToDebugSurface() {
-        if (!mOutputSurface.get()) return;
-
-        size_t bufferSize = mLockedBuffer.height * mLockedBuffer.stride *
-                PIXEL_SIZE;
-
-        ANativeWindow_Buffer outBuffer;
-        ARect outBufferBounds;
-        mOutputSurface->lock(&outBuffer, &outBufferBounds);
-        ASSERT_EQ(mLockedBuffer.width, static_cast<uint32_t>(outBuffer.width));
-        ASSERT_EQ(mLockedBuffer.height, static_cast<uint32_t>(outBuffer.height));
-        ASSERT_EQ(mLockedBuffer.stride, static_cast<uint32_t>(outBuffer.stride));
-
-        if (mLockedBuffer.format == outBuffer.format) {
-            memcpy(outBuffer.bits, mLockedBuffer.data, bufferSize);
-        } else {
-            ASSERT_EQ(mLockedBuffer.format, PIXEL_FORMAT_RGBA_8888);
-            ASSERT_EQ(mLockedBuffer.dataSpace, HAL_DATASPACE_SRGB);
-            ASSERT_EQ(outBuffer.format, PIXEL_FORMAT_RGBA_8888);
-            uint8_t* outPointer = reinterpret_cast<uint8_t*>(outBuffer.bits);
-            for (int y = 0; y < outBuffer.height; ++y) {
-                int rowOffset = y * outBuffer.stride; // pixels
-                for (int x = 0; x < outBuffer.width; ++x) {
-                    int colOffset = (rowOffset + x) * PIXEL_SIZE; // bytes
-
-                    // RGB are converted
-                    for (int c = 0; c < (PIXEL_SIZE - 1); ++c) {
-                        outPointer[colOffset + c] = srgbToLinear(
-                                mLockedBuffer.data[colOffset + c]);
-                    }
-
-                    // Alpha isn't converted
-                    outPointer[colOffset + 3] =
-                            mLockedBuffer.data[colOffset + 3];
-                }
-            }
-        }
-        mOutputSurface->unlockAndPost();
-
-        int sleepSeconds = atoi(getenv(SHOW_DEBUG_STRING));
-        sleep(sleepSeconds);
-    }
-};
-
-const char SRGBTest::SHOW_DEBUG_STRING[] = "DEBUG_OUTPUT_SECONDS";
-
-TEST_F(SRGBTest, GLRenderFromSRGBTexture) {
-    ASSERT_NO_FATAL_FAILURE(initShaders());
-
-    // The RGB texture is displayed in the top half
-    ASSERT_NO_FATAL_FAILURE(drawTexture(false, 0, DISPLAY_HEIGHT / 2,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT / 2));
-
-    // The SRGB texture is displayed in the bottom half
-    ASSERT_NO_FATAL_FAILURE(drawTexture(true, 0, 0,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT / 2));
-
-    eglSwapBuffers(mEglDisplay, mEglSurface);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Lock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->lockNextBuffer(&mLockedBuffer));
-    ASSERT_NO_FATAL_FAILURE(
-        checkLockedBuffer(PIXEL_FORMAT_RGBA_8888, HAL_DATASPACE_UNKNOWN));
-
-    // Compare a pixel in the middle of each texture
-    int midSRGBOffset = (DISPLAY_HEIGHT / 4) * mLockedBuffer.stride *
-            PIXEL_SIZE;
-    int midRGBOffset = midSRGBOffset * 3;
-    midRGBOffset += (DISPLAY_WIDTH / 2) * PIXEL_SIZE;
-    midSRGBOffset += (DISPLAY_WIDTH / 2) * PIXEL_SIZE;
-    for (int c = 0; c < PIXEL_SIZE; ++c) {
-        int expectedValue = mLockedBuffer.data[midRGBOffset + c];
-        int actualValue = mLockedBuffer.data[midSRGBOffset + c];
-        ASSERT_PRED2(withinTolerance, expectedValue, actualValue);
-    }
-
-    // mLockedBuffer is unlocked in TearDown so we can copy data from it to
-    // the debug surface if necessary
-}
-
-// XXX: Disabled since we don't currently expect this to work
-TEST_F(SRGBTest, DISABLED_RenderToSRGBSurface) {
-    ASSERT_NO_FATAL_FAILURE(initShaders());
-
-    // By default, the first buffer we write into will be RGB
-
-    // Render an RGB texture across the whole surface
-    ASSERT_NO_FATAL_FAILURE(drawTexture(false, 0, 0,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT));
-    eglSwapBuffers(mEglDisplay, mEglSurface);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Lock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->lockNextBuffer(&mLockedBuffer));
-    ASSERT_NO_FATAL_FAILURE(
-        checkLockedBuffer(PIXEL_FORMAT_RGBA_8888, HAL_DATASPACE_UNKNOWN));
-
-    // Save the values of the middle pixel for later comparison against SRGB
-    uint8_t values[PIXEL_SIZE] = {};
-    int middleOffset = (DISPLAY_HEIGHT / 2) * mLockedBuffer.stride *
-            PIXEL_SIZE;
-    middleOffset += (DISPLAY_WIDTH / 2) * PIXEL_SIZE;
-    for (int c = 0; c < PIXEL_SIZE; ++c) {
-        values[c] = mLockedBuffer.data[middleOffset + c];
-    }
-
-    // Unlock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->unlockBuffer(mLockedBuffer));
-
-    // Switch to SRGB window surface
-    static const int srgbAttribs[] = {
-        EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR,
-        EGL_NONE,
-    };
-
-    EXPECT_TRUE(eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
-            mEglContext));
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    EXPECT_TRUE(eglDestroySurface(mEglDisplay, mEglSurface));
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    mEglSurface = eglCreateWindowSurface(mEglDisplay, mEglConfig,
-            mInputSurface.get(), srgbAttribs);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-    ASSERT_NE(EGL_NO_SURFACE, mEglSurface);
-
-    EXPECT_TRUE(eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface,
-            mEglContext));
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Render the texture again
-    ASSERT_NO_FATAL_FAILURE(drawTexture(false, 0, 0,
-            DISPLAY_WIDTH, DISPLAY_HEIGHT));
-    eglSwapBuffers(mEglDisplay, mEglSurface);
-    ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    // Lock
-    ASSERT_EQ(NO_ERROR, mCpuConsumer->lockNextBuffer(&mLockedBuffer));
-
-    // Make sure we actually got the SRGB buffer on the consumer side
-    ASSERT_NO_FATAL_FAILURE(
-        checkLockedBuffer(PIXEL_FORMAT_RGBA_8888, HAL_DATASPACE_SRGB));
-
-    // Verify that the stored value is the same, accounting for RGB/SRGB
-    for (int c = 0; c < PIXEL_SIZE; ++c) {
-        // The alpha value should be equivalent before linear->SRGB
-        float rgbAsSRGB = (c == 3) ? values[c] / 255.0f :
-                linearToSRGB(values[c] / 255.0f);
-        int expectedValue = rgbAsSRGB * 255.0f + 0.5f;
-        int actualValue = mLockedBuffer.data[middleOffset + c];
-        ASSERT_PRED2(withinTolerance, expectedValue, actualValue);
-    }
-
-    // mLockedBuffer is unlocked in TearDown so we can copy data from it to
-    // the debug surface if necessary
-}
-
-} // namespace android
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index b10d4eb..bd598e4 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -23,6 +23,7 @@
 #include <gtest/gtest.h>
 #include <gui/GLConsumer.h>
 #include <gui/Surface.h>
+#include <gui/BufferQueue.h>
 #include <system/graphics.h>
 #include <utils/Log.h>
 #include <utils/Thread.h>
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 5298027..ceeb90a 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -364,7 +364,7 @@
                 FrameEvent::LATCH,
                 FrameEvent::FIRST_REFRESH_START,
                 FrameEvent::LAST_REFRESH_START,
-                FrameEvent::GL_COMPOSITION_DONE,
+                FrameEvent::GPU_COMPOSITION_DONE,
                 FrameEvent::DEQUEUE_READY,
                 FrameEvent::RELEASE
         };
diff --git a/libs/math/Android.bp b/libs/math/Android.bp
new file mode 100644
index 0000000..3ef8b4a
--- /dev/null
+++ b/libs/math/Android.bp
@@ -0,0 +1,21 @@
+// 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.
+
+cc_library_static {
+    name: "libmath",
+    host_supported: true,
+    export_include_dirs: ["include"],
+}
+
+subdirs = ["tests"]
diff --git a/libs/math/MODULE_LICENSE_APACHE2 b/libs/math/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libs/math/MODULE_LICENSE_APACHE2
diff --git a/libs/math/NOTICE b/libs/math/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/libs/math/NOTICE
@@ -0,0 +1,190 @@
+
+   Copyright (c) 2005-2008, 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.
+
+   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.
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
diff --git a/include/ui/TMatHelpers.h b/libs/math/include/math/TMatHelpers.h
similarity index 98%
rename from include/ui/TMatHelpers.h
rename to libs/math/include/math/TMatHelpers.h
index 8edf5f8..478e702 100644
--- a/include/ui/TMatHelpers.h
+++ b/libs/math/include/math/TMatHelpers.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef UI_TMATHELPERS_H_
-#define UI_TMATHELPERS_H_
+#pragma once
 
 #include <math.h>
 #include <stdint.h>
@@ -26,8 +25,8 @@
 #include <iomanip>
 #include <stdexcept>
 
-#include <ui/quat.h>
-#include <ui/TVecHelpers.h>
+#include <math/quat.h>
+#include <math/TVecHelpers.h>
 
 #include  <utils/String8.h>
 
@@ -636,5 +635,3 @@
 #undef UNLIKELY
 #undef PURE
 #undef CONSTEXPR
-
-#endif  // UI_TMATHELPERS_H_
diff --git a/include/ui/TQuatHelpers.h b/libs/math/include/math/TQuatHelpers.h
similarity index 98%
rename from include/ui/TQuatHelpers.h
rename to libs/math/include/math/TQuatHelpers.h
index 2f0f70f..f0a71ae 100644
--- a/include/ui/TQuatHelpers.h
+++ b/libs/math/include/math/TQuatHelpers.h
@@ -15,8 +15,7 @@
  */
 
 
-#ifndef UI_TQUATHELPERS_H_
-#define UI_TQUATHELPERS_H_
+#pragma once
 
 #include <math.h>
 #include <stdint.h>
@@ -24,7 +23,7 @@
 
 #include <iostream>
 
-#include <ui/vec3.h>
+#include <math/vec3.h>
 
 #define PURE __attribute__((pure))
 
@@ -299,6 +298,3 @@
 // -------------------------------------------------------------------------------------
 }  // namespace details
 }  // namespace android
-
-
-#endif  // UI_TQUATHELPERS_H_
diff --git a/include/ui/TVecHelpers.h b/libs/math/include/math/TVecHelpers.h
similarity index 99%
rename from include/ui/TVecHelpers.h
rename to libs/math/include/math/TVecHelpers.h
index 1884608..20f852f 100644
--- a/include/ui/TVecHelpers.h
+++ b/libs/math/include/math/TVecHelpers.h
@@ -15,8 +15,7 @@
  */
 
 
-#ifndef UI_TVECHELPERS_H_
-#define UI_TVECHELPERS_H_
+#pragma once
 
 #include <math.h>
 #include <stdint.h>
@@ -607,6 +606,3 @@
 // -------------------------------------------------------------------------------------
 }  // namespace details
 }  // namespace android
-
-
-#endif  // UI_TVECHELPERS_H_
diff --git a/include/ui/half.h b/libs/math/include/math/half.h
similarity index 98%
rename from include/ui/half.h
rename to libs/math/include/math/half.h
index 7a271dc..3ca8bd1 100644
--- a/include/ui/half.h
+++ b/libs/math/include/math/half.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef UI_HALF_H
-#define UI_HALF_H
+#pragma once
 
 #include <stdint.h>
 #include <iosfwd>
@@ -204,5 +203,3 @@
 #undef LIKELY
 #undef UNLIKELY
 #undef CONSTEXPR
-
-#endif // UI_HALF_H
diff --git a/include/ui/mat2.h b/libs/math/include/math/mat2.h
similarity index 98%
rename from include/ui/mat2.h
rename to libs/math/include/math/mat2.h
index 37c7221..3e6cd4c 100644
--- a/include/ui/mat2.h
+++ b/libs/math/include/math/mat2.h
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-#ifndef UI_MAT2_H_
-#define UI_MAT2_H_
+#pragma once
 
-#include <ui/TMatHelpers.h>
-#include <ui/vec2.h>
+#include <math/TMatHelpers.h>
+#include <math/vec2.h>
 #include <stdint.h>
 #include <sys/types.h>
 
@@ -376,5 +375,3 @@
 
 #undef PURE
 #undef CONSTEXPR
-
-#endif  // UI_MAT2_H_
diff --git a/include/ui/mat3.h b/libs/math/include/math/mat3.h
similarity index 98%
rename from include/ui/mat3.h
rename to libs/math/include/math/mat3.h
index 4f5dba9..5c8a9b2 100644
--- a/include/ui/mat3.h
+++ b/libs/math/include/math/mat3.h
@@ -14,12 +14,11 @@
  * limitations under the License.
  */
 
-#ifndef UI_MAT3_H_
-#define UI_MAT3_H_
+#pragma once
 
-#include <ui/quat.h>
-#include <ui/TMatHelpers.h>
-#include <ui/vec3.h>
+#include <math/quat.h>
+#include <math/TMatHelpers.h>
+#include <math/vec3.h>
 #include <stdint.h>
 #include <sys/types.h>
 
@@ -439,5 +438,3 @@
 
 #undef PURE
 #undef CONSTEXPR
-
-#endif  // UI_MAT3_H_
diff --git a/include/ui/mat4.h b/libs/math/include/math/mat4.h
similarity index 98%
rename from include/ui/mat4.h
rename to libs/math/include/math/mat4.h
index f63d40a..6119ba7 100644
--- a/include/ui/mat4.h
+++ b/libs/math/include/math/mat4.h
@@ -14,14 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef UI_MAT4_H_
-#define UI_MAT4_H_
+#pragma once
 
-#include <ui/mat3.h>
-#include <ui/quat.h>
-#include <ui/TMatHelpers.h>
-#include <ui/vec3.h>
-#include <ui/vec4.h>
+#include <math/mat3.h>
+#include <math/quat.h>
+#include <math/TMatHelpers.h>
+#include <math/vec3.h>
+#include <math/vec4.h>
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -585,5 +584,3 @@
 
 #undef PURE
 #undef CONSTEXPR
-
-#endif  // UI_MAT4_H_
diff --git a/include/ui/quat.h b/libs/math/include/math/quat.h
similarity index 97%
rename from include/ui/quat.h
rename to libs/math/include/math/quat.h
index 5b8cd8b..1936a2b 100644
--- a/include/ui/quat.h
+++ b/libs/math/include/math/quat.h
@@ -14,13 +14,12 @@
  * limitations under the License.
  */
 
-#ifndef UI_QUAT_H_
-#define UI_QUAT_H_
+#pragma once
 
-#include <ui/half.h>
-#include <ui/TQuatHelpers.h>
-#include <ui/vec3.h>
-#include <ui/vec4.h>
+#include <math/half.h>
+#include <math/TQuatHelpers.h>
+#include <math/vec3.h>
+#include <math/vec4.h>
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -191,5 +190,3 @@
 #pragma clang diagnostic pop
 
 #undef PURE
-
-#endif  // UI_QUAT_H_
diff --git a/include/ui/scalar.h b/libs/math/include/math/scalar.h
similarity index 94%
rename from include/ui/scalar.h
rename to libs/math/include/math/scalar.h
index 5f8329e..2eced92 100644
--- a/include/ui/scalar.h
+++ b/libs/math/include/math/scalar.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef UI_SCALAR_H
-#define UI_SCALAR_H
+#pragma once
 
 #include <algorithm>
 #include <cmath>
@@ -43,5 +42,3 @@
 }
 
 } // namespace std
-
-#endif // UI_SCALAR_H
diff --git a/include/ui/vec2.h b/libs/math/include/math/vec2.h
similarity index 96%
rename from include/ui/vec2.h
rename to libs/math/include/math/vec2.h
index 308d2b8..a347633 100644
--- a/include/ui/vec2.h
+++ b/libs/math/include/math/vec2.h
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-#ifndef UI_VEC2_H_
-#define UI_VEC2_H_
+#pragma once
 
-#include <ui/TVecHelpers.h>
-#include <ui/half.h>
+#include <math/TVecHelpers.h>
+#include <math/half.h>
 #include <assert.h>
 #include <stdint.h>
 #include <sys/types.h>
@@ -124,5 +123,3 @@
 }  // namespace android
 
 #pragma clang diagnostic pop
-
-#endif  // UI_VEC2_H_
diff --git a/include/ui/vec3.h b/libs/math/include/math/vec3.h
similarity index 97%
rename from include/ui/vec3.h
rename to libs/math/include/math/vec3.h
index e3a6d14..009fd84 100644
--- a/include/ui/vec3.h
+++ b/libs/math/include/math/vec3.h
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-#ifndef UI_VEC3_H_
-#define UI_VEC3_H_
+#pragma once
 
-#include <ui/vec2.h>
-#include <ui/half.h>
+#include <math/vec2.h>
+#include <math/half.h>
 #include <stdint.h>
 #include <sys/types.h>
 
@@ -130,5 +129,3 @@
 }  // namespace android
 
 #pragma clang diagnostic pop
-
-#endif  // UI_VEC3_H_
diff --git a/include/ui/vec4.h b/libs/math/include/math/vec4.h
similarity index 96%
rename from include/ui/vec4.h
rename to libs/math/include/math/vec4.h
index 9346fb3..1e279fe 100644
--- a/include/ui/vec4.h
+++ b/libs/math/include/math/vec4.h
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-#ifndef UI_VEC4_H_
-#define UI_VEC4_H_
+#pragma once
 
-#include <ui/vec3.h>
-#include <ui/half.h>
+#include <math/vec3.h>
+#include <math/half.h>
 #include <stdint.h>
 #include <sys/types.h>
 
@@ -127,5 +126,3 @@
 }  // namespace android
 
 #pragma clang diagnostic pop
-
-#endif  // UI_VEC4_H_
diff --git a/libs/math/tests/Android.bp b/libs/math/tests/Android.bp
new file mode 100644
index 0000000..0ed24a2
--- /dev/null
+++ b/libs/math/tests/Android.bp
@@ -0,0 +1,39 @@
+//
+// Copyright (C) 2014 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.
+//
+
+cc_test {
+    name: "vec_test",
+    srcs: ["vec_test.cpp"],
+    static_libs: ["libmath"],
+}
+
+cc_test {
+    name: "mat_test",
+    srcs: ["mat_test.cpp"],
+    static_libs: ["libmath"],
+}
+
+cc_test {
+    name: "half_test",
+    srcs: ["half_test.cpp"],
+    static_libs: ["libmath"],
+}
+
+cc_test {
+    name: "quat_test",
+    srcs: ["quat_test.cpp"],
+    static_libs: ["libmath"],
+}
diff --git a/libs/ui/tests/half_test.cpp b/libs/math/tests/half_test.cpp
similarity index 98%
rename from libs/ui/tests/half_test.cpp
rename to libs/math/tests/half_test.cpp
index b2a5e5c..496a7ef 100644
--- a/libs/ui/tests/half_test.cpp
+++ b/libs/math/tests/half_test.cpp
@@ -19,8 +19,8 @@
 #include <math.h>
 #include <stdlib.h>
 
-#include <ui/half.h>
-#include <ui/vec4.h>
+#include <math/half.h>
+#include <math/vec4.h>
 
 #include <gtest/gtest.h>
 
diff --git a/libs/ui/tests/mat_test.cpp b/libs/math/tests/mat_test.cpp
similarity index 99%
rename from libs/ui/tests/mat_test.cpp
rename to libs/math/tests/mat_test.cpp
index 0f8e631..c365366 100644
--- a/libs/ui/tests/mat_test.cpp
+++ b/libs/math/tests/mat_test.cpp
@@ -24,8 +24,8 @@
 
 #include <gtest/gtest.h>
 
-#include <ui/mat2.h>
-#include <ui/mat4.h>
+#include <math/mat2.h>
+#include <math/mat4.h>
 
 namespace android {
 
diff --git a/libs/ui/tests/quat_test.cpp b/libs/math/tests/quat_test.cpp
similarity index 98%
rename from libs/ui/tests/quat_test.cpp
rename to libs/math/tests/quat_test.cpp
index f5cb659..c20771e 100644
--- a/libs/ui/tests/quat_test.cpp
+++ b/libs/math/tests/quat_test.cpp
@@ -22,10 +22,10 @@
 #include <random>
 #include <functional>
 
-#include <ui/quat.h>
-#include <ui/mat4.h>
-#include <ui/vec3.h>
-#include <ui/vec4.h>
+#include <math/quat.h>
+#include <math/mat4.h>
+#include <math/vec3.h>
+#include <math/vec4.h>
 
 #include <gtest/gtest.h>
 
diff --git a/libs/ui/tests/vec_test.cpp b/libs/math/tests/vec_test.cpp
similarity index 99%
rename from libs/ui/tests/vec_test.cpp
rename to libs/math/tests/vec_test.cpp
index 7c749a7..79ae2e4 100644
--- a/libs/ui/tests/vec_test.cpp
+++ b/libs/math/tests/vec_test.cpp
@@ -19,7 +19,7 @@
 #include <math.h>
 #include <stdlib.h>
 
-#include <ui/vec4.h>
+#include <math/vec4.h>
 
 #include <gtest/gtest.h>
 
diff --git a/libs/nativewindow/AHardwareBuffer.cpp b/libs/nativewindow/AHardwareBuffer.cpp
new file mode 100644
index 0000000..b4b5303
--- /dev/null
+++ b/libs/nativewindow/AHardwareBuffer.cpp
@@ -0,0 +1,369 @@
+/*
+ * 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_TAG "AHardwareBuffer"
+
+#include <android/hardware_buffer.h>
+
+#include <errno.h>
+#include <sys/socket.h>
+#include <memory>
+
+#include <cutils/native_handle.h>
+#include <log/log.h>
+#include <utils/StrongPointer.h>
+#include <ui/GraphicBuffer.h>
+#include <system/graphics.h>
+#include <hardware/gralloc1.h>
+
+#include <private/android/AHardwareBufferHelpers.h>
+
+
+static constexpr int kDataBufferSize = 64 * sizeof(int);  // 64 ints
+
+using namespace android;
+
+// ----------------------------------------------------------------------------
+// Public functions
+// ----------------------------------------------------------------------------
+
+int AHardwareBuffer_allocate(const AHardwareBuffer_Desc* desc, AHardwareBuffer** outBuffer) {
+    if (!outBuffer || !desc)
+        return BAD_VALUE;
+
+    int format = AHardwareBuffer_convertToPixelFormat(desc->format);
+    if (format == 0) {
+        ALOGE("Invalid pixel format %u", desc->format);
+        return BAD_VALUE;
+    }
+
+    if (desc->format == AHARDWAREBUFFER_FORMAT_BLOB && desc->height != 1) {
+        ALOGE("Height must be 1 when using the AHARDWAREBUFFER_FORMAT_BLOB format");
+        return BAD_VALUE;
+    }
+
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    AHardwareBuffer_convertToGrallocUsageBits(desc->usage0, &producerUsage, &consumerUsage);
+
+    sp<GraphicBuffer> gbuffer(new GraphicBuffer(
+            desc->width, desc->height, format, desc->layers, producerUsage, consumerUsage,
+            std::string("AHardwareBuffer pid [") + std::to_string(getpid()) + "]"));
+
+    status_t err = gbuffer->initCheck();
+    if (err != 0 || gbuffer->handle == 0) {
+        if (err == NO_MEMORY) {
+            GraphicBuffer::dumpAllocationsToSystemLog();
+        }
+        ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%u, h=%u, lc=%u) failed (%s), handle=%p",
+                desc->width, desc->height, desc->layers, strerror(-err), gbuffer->handle);
+        return err;
+    }
+
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(gbuffer.get());
+
+    // Ensure the buffer doesn't get destroyed when the sp<> goes away.
+    AHardwareBuffer_acquire(*outBuffer);
+    return NO_ERROR;
+}
+
+void AHardwareBuffer_acquire(AHardwareBuffer* buffer) {
+    AHardwareBuffer_to_GraphicBuffer(buffer)->incStrong((void*)AHardwareBuffer_acquire);
+}
+
+void AHardwareBuffer_release(AHardwareBuffer* buffer) {
+    AHardwareBuffer_to_GraphicBuffer(buffer)->decStrong((void*)AHardwareBuffer_release);
+}
+
+void AHardwareBuffer_describe(const AHardwareBuffer* buffer,
+        AHardwareBuffer_Desc* outDesc) {
+    if (!buffer || !outDesc) return;
+
+    const GraphicBuffer* gbuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+
+    outDesc->width = gbuffer->getWidth();
+    outDesc->height = gbuffer->getHeight();
+    outDesc->layers = gbuffer->getLayerCount();
+    outDesc->usage0 = AHardwareBuffer_convertFromGrallocUsageBits(
+            gbuffer->getUsage(), gbuffer->getUsage());
+    outDesc->usage1 = 0;
+    outDesc->format = AHardwareBuffer_convertFromPixelFormat(
+            static_cast<uint32_t>(gbuffer->getPixelFormat()));
+}
+
+int AHardwareBuffer_lock(AHardwareBuffer* buffer, uint64_t usage0,
+        int32_t fence, const ARect* rect, void** outVirtualAddress) {
+    if (!buffer) return BAD_VALUE;
+
+    if (usage0 & ~(AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN |
+                   AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN)) {
+        ALOGE("Invalid usage flags passed to AHardwareBuffer_lock; only "
+                " AHARDWAREBUFFER_USAGE0_CPU_* flags are allowed");
+        return BAD_VALUE;
+    }
+
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    AHardwareBuffer_convertToGrallocUsageBits(usage0, &producerUsage, &consumerUsage);
+    GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    Rect bounds;
+    if (!rect) {
+        bounds.set(Rect(gBuffer->getWidth(), gBuffer->getHeight()));
+    } else {
+        bounds.set(Rect(rect->left, rect->top, rect->right, rect->bottom));
+    }
+    return gBuffer->lockAsync(producerUsage, consumerUsage, bounds,
+            outVirtualAddress, fence);
+}
+
+int AHardwareBuffer_unlock(AHardwareBuffer* buffer, int32_t* fence) {
+    if (!buffer) return BAD_VALUE;
+
+    GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    return gBuffer->unlockAsync(fence);
+}
+
+int AHardwareBuffer_sendHandleToUnixSocket(const AHardwareBuffer* buffer,
+        int socketFd) {
+    if (!buffer) return BAD_VALUE;
+    const GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+
+    size_t flattenedSize = gBuffer->getFlattenedSize();
+    size_t fdCount = gBuffer->getFdCount();
+
+    std::unique_ptr<uint8_t[]> data(new uint8_t[flattenedSize]);
+    std::unique_ptr<int[]> fds(new int[fdCount]);
+
+    // Make copies of needed items since flatten modifies them, and we don't
+    // want to send anything if there's an error during flatten.
+    size_t flattenedSizeCopy = flattenedSize;
+    size_t fdCountCopy = fdCount;
+    void* dataStart = data.get();
+    int* fdsStart = fds.get();
+    status_t err = gBuffer->flatten(dataStart, flattenedSizeCopy, fdsStart,
+            fdCountCopy);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    struct iovec iov[1];
+    iov[0].iov_base = data.get();
+    iov[0].iov_len = flattenedSize;
+
+    char buf[CMSG_SPACE(kDataBufferSize)];
+    struct msghdr msg = {
+            .msg_control = buf,
+            .msg_controllen = sizeof(buf),
+            .msg_iov = &iov[0],
+            .msg_iovlen = 1,
+    };
+
+    struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    cmsg->cmsg_len = CMSG_LEN(sizeof(int) * fdCount);
+    int* fdData = reinterpret_cast<int*>(CMSG_DATA(cmsg));
+    memcpy(fdData, fds.get(), sizeof(int) * fdCount);
+    msg.msg_controllen = cmsg->cmsg_len;
+
+    int result = sendmsg(socketFd, &msg, 0);
+    if (result <= 0) {
+        ALOGE("Error writing AHardwareBuffer to socket: error %#x (%s)",
+                result, strerror(errno));
+        return result;
+    }
+    return NO_ERROR;
+}
+
+int AHardwareBuffer_recvHandleFromUnixSocket(int socketFd,
+        AHardwareBuffer** outBuffer) {
+    if (!outBuffer) return BAD_VALUE;
+
+    char dataBuf[CMSG_SPACE(kDataBufferSize)];
+    char fdBuf[CMSG_SPACE(kDataBufferSize)];
+    struct iovec iov[1];
+    iov[0].iov_base = dataBuf;
+    iov[0].iov_len = sizeof(dataBuf);
+
+    struct msghdr msg = {
+            .msg_control = fdBuf,
+            .msg_controllen = sizeof(fdBuf),
+            .msg_iov = &iov[0],
+            .msg_iovlen = 1,
+    };
+
+    int result = recvmsg(socketFd, &msg, 0);
+    if (result <= 0) {
+        ALOGE("Error reading AHardwareBuffer from socket: error %#x (%s)",
+                result, strerror(errno));
+        return result;
+    }
+
+    if (msg.msg_iovlen != 1) {
+        ALOGE("Error reading AHardwareBuffer from socket: bad data length");
+        return INVALID_OPERATION;
+    }
+
+    if (msg.msg_controllen % sizeof(int) != 0) {
+        ALOGE("Error reading AHardwareBuffer from socket: bad fd length");
+        return INVALID_OPERATION;
+    }
+
+    size_t dataLen = msg.msg_iov[0].iov_len;
+    const void* data = static_cast<const void*>(msg.msg_iov[0].iov_base);
+    if (!data) {
+        ALOGE("Error reading AHardwareBuffer from socket: no buffer data");
+        return INVALID_OPERATION;
+    }
+
+    struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+    if (!cmsg) {
+        ALOGE("Error reading AHardwareBuffer from socket: no fd header");
+        return INVALID_OPERATION;
+    }
+
+    size_t fdCount = msg.msg_controllen >> 2;
+    const int* fdData = reinterpret_cast<const int*>(CMSG_DATA(cmsg));
+    if (!fdData) {
+        ALOGE("Error reading AHardwareBuffer from socket: no fd data");
+        return INVALID_OPERATION;
+    }
+
+    GraphicBuffer* gBuffer = new GraphicBuffer();
+    status_t err = gBuffer->unflatten(data, dataLen, fdData, fdCount);
+    if (err != NO_ERROR) {
+        return err;
+    }
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(gBuffer);
+    // Ensure the buffer has a positive ref-count.
+    AHardwareBuffer_acquire(*outBuffer);
+
+    return NO_ERROR;
+}
+
+const struct native_handle* AHardwareBuffer_getNativeHandle(
+        const AHardwareBuffer* buffer) {
+    if (!buffer) return nullptr;
+    const GraphicBuffer* gbuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    return gbuffer->handle;
+}
+
+
+// ----------------------------------------------------------------------------
+// Helpers implementation
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+static inline bool containsBits(uint64_t mask, uint64_t bitsToCheck) {
+    return (mask & bitsToCheck) == bitsToCheck;
+}
+
+uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format) {
+    switch (format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:    return AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
+        case HAL_PIXEL_FORMAT_RGBX_8888:    return AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM;
+        case HAL_PIXEL_FORMAT_RGB_565:      return AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM;
+        case HAL_PIXEL_FORMAT_RGB_888:      return AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM;
+        case HAL_PIXEL_FORMAT_RGBA_FP16:    return AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT;
+        case HAL_PIXEL_FORMAT_RGBA_1010102: return AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32;
+        case HAL_PIXEL_FORMAT_BLOB:         return AHARDWAREBUFFER_FORMAT_BLOB;
+        default:ALOGE("Unknown pixel format %u", format);
+            return 0;
+    }
+}
+
+uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format) {
+    switch (format) {
+        case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM:         return HAL_PIXEL_FORMAT_RGBA_8888;
+        case AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM:         return HAL_PIXEL_FORMAT_RGBX_8888;
+        case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM:           return HAL_PIXEL_FORMAT_RGB_565;
+        case AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM:           return HAL_PIXEL_FORMAT_RGB_888;
+        case AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT:    return HAL_PIXEL_FORMAT_RGBA_FP16;
+        case AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32: return HAL_PIXEL_FORMAT_RGBA_1010102;
+        case AHARDWAREBUFFER_FORMAT_BLOB:                   return HAL_PIXEL_FORMAT_BLOB;
+        default:ALOGE("Unknown AHardwareBuffer format %u", format);
+            return 0;
+    }
+}
+
+void AHardwareBuffer_convertToGrallocUsageBits(uint64_t usage, uint64_t* outProducerUsage,
+        uint64_t* outConsumerUsage) {
+    *outProducerUsage = 0;
+    *outConsumerUsage = 0;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_READ))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_CPU_READ;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_WRITE))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_CPU_WRITE;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET;
+    // Not sure what this should be.
+    //if (containsBits(usage0, AHARDWAREBUFFER_USAGE0_GPU_CUBEMAP)) bits |= 0;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_PROTECTED;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA;
+}
+
+uint64_t AHardwareBuffer_convertFromGrallocUsageBits(uint64_t producerUsage, uint64_t consumerUsage) {
+    uint64_t bits = 0;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_CPU_READ))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_READ;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_CPU_WRITE))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_WRITE;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE))
+        bits |= AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET))
+        bits |= AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER))
+        bits |= AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER))
+        bits |= AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_PROTECTED))
+        bits |= AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA))
+        bits |= AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA;
+
+    return bits;
+}
+
+const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer) {
+    return reinterpret_cast<const GraphicBuffer*>(buffer);
+}
+
+GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer) {
+    return reinterpret_cast<GraphicBuffer*>(buffer);
+}
+
+AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer) {
+    return reinterpret_cast<AHardwareBuffer*>(buffer);
+}
+
+} // namespace android
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
new file mode 100644
index 0000000..34c136a
--- /dev/null
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "ANativeWindow"
+
+#include <android/native_window.h>
+#include <system/window.h>
+
+void ANativeWindow_acquire(ANativeWindow* window) {
+    window->incStrong((void*)ANativeWindow_acquire);
+}
+
+void ANativeWindow_release(ANativeWindow* window) {
+    window->decStrong((void*)ANativeWindow_release);
+}
+
+static int32_t getWindowProp(ANativeWindow* window, int what) {
+    int value;
+    int res = window->query(window, what, &value);
+    return res < 0 ? res : value;
+}
+
+int32_t ANativeWindow_getWidth(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_WIDTH);
+}
+
+int32_t ANativeWindow_getHeight(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
+}
+
+int32_t ANativeWindow_getFormat(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_FORMAT);
+}
+
+int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
+        int32_t height, int32_t format) {
+    int32_t err = native_window_set_buffers_format(window, format);
+    if (!err) {
+        err = native_window_set_buffers_user_dimensions(window, width, height);
+        if (!err) {
+            int mode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
+            if (width && height) {
+                mode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
+            }
+            err = native_window_set_scaling_mode(window, mode);
+        }
+    }
+    return err;
+}
+
+int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
+        ARect* inOutDirtyBounds) {
+    return window->perform(window, NATIVE_WINDOW_LOCK, outBuffer, inOutDirtyBounds);
+}
+
+int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
+    return window->perform(window, NATIVE_WINDOW_UNLOCK_AND_POST);
+}
diff --git a/libs/nativewindow/Android.bp b/libs/nativewindow/Android.bp
new file mode 100644
index 0000000..46e5d50
--- /dev/null
+++ b/libs/nativewindow/Android.bp
@@ -0,0 +1,50 @@
+// 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.
+
+ndk_headers {
+    name: "libnativewindwow_headers",
+    from: "include/android",
+    to: "android",
+    srcs: ["include/android/*.h"],
+    license: "NOTICE",
+}
+
+cc_library {
+    name: "libnativewindow",
+    export_include_dirs: ["include"],
+
+    clang: true,
+
+    srcs: [
+        "AHardwareBuffer.cpp",
+        "ANativeWindow.cpp",
+    ],
+
+    shared_libs: [
+        "libhardware",
+        "libcutils",
+        "liblog",
+        "libutils",
+        "libui",
+    ],
+
+    static_libs: [
+        "libarect",
+    ],
+
+    // headers we include in our public headers
+    export_static_lib_headers: [
+        "libarect",
+    ],
+}
diff --git a/libs/nativewindow/MODULE_LICENSE_APACHE2 b/libs/nativewindow/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libs/nativewindow/MODULE_LICENSE_APACHE2
diff --git a/libs/nativewindow/NOTICE b/libs/nativewindow/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/libs/nativewindow/NOTICE
@@ -0,0 +1,190 @@
+
+   Copyright (c) 2005-2008, 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.
+
+   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.
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
diff --git a/include/android/hardware_buffer.h b/libs/nativewindow/include/android/hardware_buffer.h
similarity index 93%
rename from include/android/hardware_buffer.h
rename to libs/nativewindow/include/android/hardware_buffer.h
index 24e217e..9c08c7b 100644
--- a/include/android/hardware_buffer.h
+++ b/libs/nativewindow/include/android/hardware_buffer.h
@@ -38,41 +38,48 @@
      *   Vulkan: VK_FORMAT_R8G8B8A8_UNORM
      *   OpenGL ES: GL_RGBA8
      */
-    AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM      = 1,
+    AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM           = 1,
 
     /**
      * Corresponding formats:
      *   Vulkan: VK_FORMAT_R8G8B8A8_UNORM
      *   OpenGL ES: GL_RGBA8
      */
-    AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM      = 2,
+    AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM           = 2,
 
     /**
      * Corresponding formats:
      *   Vulkan: VK_FORMAT_R8G8B8_UNORM
      *   OpenGL ES: GL_RGB8
      */
-    AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM        = 3,
+    AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM             = 3,
 
     /**
      * Corresponding formats:
      *   Vulkan: VK_FORMAT_R5G6B5_UNORM_PACK16
      *   OpenGL ES: GL_RGB565
      */
-    AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM        = 4,
+    AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM             = 4,
 
     /**
      * Corresponding formats:
      *   Vulkan: VK_FORMAT_R16G16B16A16_SFLOAT
      *   OpenGL ES: GL_RGBA16F
      */
-    AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT = 0x16,
+    AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT      = 0x16,
+
+    /**
+     * Corresponding formats:
+     *   Vulkan: VK_FORMAT_A2R10G10B10_UNORM_PACK32
+     *   OpenGL ES: GL_RGB10_A2
+     */
+    AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32 = 0x2b,
 
     /**
      * An opaque binary blob format that must have height 1, with width equal to
      * the buffer size in bytes.
      */
-    AHARDWAREBUFFER_FORMAT_BLOB                = 0x21,
+    AHARDWAREBUFFER_FORMAT_BLOB                     = 0x21,
 };
 
 enum {
diff --git a/include/android/native_window.h b/libs/nativewindow/include/android/native_window.h
similarity index 97%
rename from include/android/native_window.h
rename to libs/nativewindow/include/android/native_window.h
index 7d8d657..6a46d7f 100644
--- a/include/android/native_window.h
+++ b/libs/nativewindow/include/android/native_window.h
@@ -48,8 +48,6 @@
     WINDOW_FORMAT_RGBX_8888          = AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM,
     /** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
     WINDOW_FORMAT_RGB_565            = AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM,
-    /** Red: 16 bits, Green: 16 bits, Blue: 16 bits, Alpha: 16 bits. **/
-    WINDOW_FORMAT_RGBA_FP16          = 0x16,
 };
 
 struct ANativeWindow;
diff --git a/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h b/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h
new file mode 100644
index 0000000..f138fa7
--- /dev/null
+++ b/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h
@@ -0,0 +1,52 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
+#define ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
+
+/*
+ * This file contains utility functions related to AHardwareBuffer, mostly to convert
+ * to/from HAL formats.
+ *
+ * These are PRIVATE methods, so this file can NEVER appear in a public NDK header.
+ * They are used by higher level libraries such as core/jni.
+ */
+
+#include <stdint.h>
+
+struct AHardwareBuffer;
+
+namespace android {
+
+uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format);
+
+uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format);
+
+void AHardwareBuffer_convertToGrallocUsageBits(uint64_t usage,
+        uint64_t* outProducerUsage, uint64_t* outConsumerUsage);
+
+uint64_t AHardwareBuffer_convertFromGrallocUsageBits(
+        uint64_t producerUsage, uint64_t consumerUsage);
+
+
+class GraphicBuffer;
+const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer);
+GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer);
+AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer);
+
+} // namespace android
+
+#endif // ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
diff --git a/libs/ui/Android.bp b/libs/ui/Android.bp
index cfe170d..d1bfa18 100644
--- a/libs/ui/Android.bp
+++ b/libs/ui/Android.bp
@@ -75,6 +75,16 @@
         "libutils",
         "liblog",
     ],
+
+    static_libs: [
+        "libarect",
+        "libmath",
+    ],
+
+    export_static_lib_headers: [
+        "libarect",
+        "libmath",
+    ],
 }
 
 subdirs = ["tests"]
diff --git a/libs/ui/FenceTime.cpp b/libs/ui/FenceTime.cpp
index 8106b16..1414766 100644
--- a/libs/ui/FenceTime.cpp
+++ b/libs/ui/FenceTime.cpp
@@ -16,6 +16,8 @@
 
 #include <ui/FenceTime.h>
 
+#define LOG_TAG "FenceTime"
+
 #include <cutils/compiler.h>  // For CC_[UN]LIKELY
 #include <utils/Log.h>
 #include <inttypes.h>
@@ -62,8 +64,11 @@
 FenceTime::FenceTime(nsecs_t signalTime)
   : mState(Fence::isValidTimestamp(signalTime) ? State::VALID : State::INVALID),
     mFence(nullptr),
-    mSignalTime(signalTime == Fence::SIGNAL_TIME_PENDING ?
-            Fence::SIGNAL_TIME_INVALID : signalTime) {
+    mSignalTime(signalTime) {
+    if (CC_UNLIKELY(mSignalTime == Fence::SIGNAL_TIME_PENDING)) {
+        ALOGE("Pending signal time not allowed after signal.");
+        mSignalTime = Fence::SIGNAL_TIME_INVALID;
+    }
 }
 
 void FenceTime::applyTrustedSnapshot(const Snapshot& src) {
@@ -71,7 +76,7 @@
         // Applying Snapshot::State::FENCE, could change the valid state of the
         // FenceTime, which is not allowed. Callers should create a new
         // FenceTime from the snapshot instead.
-        ALOGE("FenceTime::applyTrustedSnapshot: Unexpected fence.");
+        ALOGE("applyTrustedSnapshot: Unexpected fence.");
         return;
     }
 
@@ -332,16 +337,13 @@
                 continue;
             }
             ALOGE_IF(!fenceTime->isValid(),
-                    "FenceToFenceTimeMap::signalAllForTest: "
-                     "Signaling invalid fence.");
+                    "signalAllForTest: Signaling invalid fence.");
             fenceTime->signalForTest(signalTime);
             signaled = true;
         }
     }
 
-    if (!signaled) {
-        ALOGE("FenceToFenceTimeMap::signalAllForTest: Nothing to signal.");
-    }
+    ALOGE_IF(!signaled, "signalAllForTest: Nothing to signal.");
 }
 
 void FenceToFenceTimeMap::garbageCollectLocked() {
diff --git a/libs/ui/Gralloc1.cpp b/libs/ui/Gralloc1.cpp
index 0083f58..64a8b40 100644
--- a/libs/ui/Gralloc1.cpp
+++ b/libs/ui/Gralloc1.cpp
@@ -17,6 +17,8 @@
 //#define LOG_NDEBUG 0
 
 #include <ui/Gralloc1.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/Gralloc1On0Adapter.h>
 
 #include <vector>
 
diff --git a/libs/ui/Gralloc1On0Adapter.cpp b/libs/ui/Gralloc1On0Adapter.cpp
index a0bbe63..b8bc6c4 100644
--- a/libs/ui/Gralloc1On0Adapter.cpp
+++ b/libs/ui/Gralloc1On0Adapter.cpp
@@ -18,9 +18,13 @@
 #define LOG_TAG "Gralloc1On0Adapter"
 //#define LOG_NDEBUG 0
 
+#include <ui/Gralloc1On0Adapter.h>
+
+
 #include <hardware/gralloc.h>
 
-#include <ui/Gralloc1On0Adapter.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/Gralloc1.h>
 
 #include <utils/Log.h>
 
diff --git a/libs/ui/GrallocAllocator.cpp b/libs/ui/GrallocAllocator.cpp
index ca67990..7af55e7 100644
--- a/libs/ui/GrallocAllocator.cpp
+++ b/libs/ui/GrallocAllocator.cpp
@@ -16,9 +16,10 @@
 
 #define LOG_TAG "GrallocAllocator"
 
-#include <log/log.h>
 #include <ui/GrallocAllocator.h>
 
+#include <log/log.h>
+
 namespace android {
 
 namespace Gralloc2 {
@@ -28,7 +29,7 @@
 
 Allocator::Allocator()
 {
-    mAllocator = IAllocator::getService("gralloc");
+    mAllocator = IAllocator::getService();
     if (mAllocator != nullptr) {
         mAllocator->createClient(
                 [&](const auto& tmpError, const auto& tmpClient) {
diff --git a/libs/ui/GrallocMapper.cpp b/libs/ui/GrallocMapper.cpp
index b9e9040..8095247 100644
--- a/libs/ui/GrallocMapper.cpp
+++ b/libs/ui/GrallocMapper.cpp
@@ -16,11 +16,9 @@
 
 #define LOG_TAG "GrallocMapper"
 
-#include <array>
-#include <string>
+#include <ui/GrallocMapper.h>
 
 #include <log/log.h>
-#include <ui/GrallocMapper.h>
 
 namespace android {
 
@@ -30,7 +28,7 @@
 
 Mapper::Mapper()
 {
-    mMapper = IMapper::getService("gralloc-mapper");
+    mMapper = IMapper::getService();
     if (mMapper != nullptr && mMapper->isRemote()) {
         LOG_ALWAYS_FATAL("gralloc-mapper must be in passthrough mode");
     }
diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index b544426..37ebfb3 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -16,18 +16,10 @@
 
 #define LOG_TAG "GraphicBuffer"
 
-#include <stdlib.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <utils/Errors.h>
-#include <utils/Log.h>
-
-#include <ui/GrallocMapper.h>
 #include <ui/GraphicBuffer.h>
+#include <ui/GrallocMapper.h>
 #include <ui/GraphicBufferAllocator.h>
 #include <ui/GraphicBufferMapper.h>
-#include <ui/PixelFormat.h>
 
 namespace android {
 
diff --git a/libs/ui/GraphicBufferAllocator.cpp b/libs/ui/GraphicBufferAllocator.cpp
index b14110e..3f18bbc 100644
--- a/libs/ui/GraphicBufferAllocator.cpp
+++ b/libs/ui/GraphicBufferAllocator.cpp
@@ -18,13 +18,15 @@
 #define LOG_TAG "GraphicBufferAllocator"
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
+#include <ui/GraphicBufferAllocator.h>
+
+#include <stdio.h>
+
 #include <log/log.h>
 #include <utils/Singleton.h>
 #include <utils/String8.h>
 #include <utils/Trace.h>
 
-#include <ui/GraphicBufferAllocator.h>
-#include <ui/Gralloc1On0Adapter.h>
 #include <ui/GrallocAllocator.h>
 #include <ui/GrallocMapper.h>
 #include <ui/GraphicBufferMapper.h>
diff --git a/libs/ui/GraphicBufferMapper.cpp b/libs/ui/GraphicBufferMapper.cpp
index a3b6e18..656472f 100644
--- a/libs/ui/GraphicBufferMapper.cpp
+++ b/libs/ui/GraphicBufferMapper.cpp
@@ -18,8 +18,7 @@
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 //#define LOG_NDEBUG 0
 
-#include <stdint.h>
-#include <errno.h>
+#include <ui/GraphicBufferMapper.h>
 
 // We would eliminate the non-conforming zero-length array, but we can't since
 // this is effectively included from the Linux kernel
@@ -28,14 +27,11 @@
 #include <sync/sync.h>
 #pragma clang diagnostic pop
 
-#include <utils/Errors.h>
 #include <utils/Log.h>
 #include <utils/Trace.h>
 
-#include <ui/Gralloc1On0Adapter.h>
 #include <ui/GrallocMapper.h>
-#include <ui/GraphicBufferMapper.h>
-#include <ui/Rect.h>
+#include <ui/GraphicBuffer.h>
 
 #include <system/graphics.h>
 
diff --git a/libs/ui/PixelFormat.cpp b/libs/ui/PixelFormat.cpp
index 734472d..e88fdd5 100644
--- a/libs/ui/PixelFormat.cpp
+++ b/libs/ui/PixelFormat.cpp
@@ -27,6 +27,7 @@
         case PIXEL_FORMAT_RGBA_8888:
         case PIXEL_FORMAT_RGBX_8888:
         case PIXEL_FORMAT_BGRA_8888:
+        case PIXEL_FORMAT_RGBA_1010102:
             return 4;
         case PIXEL_FORMAT_RGB_888:
             return 3;
@@ -45,6 +46,7 @@
         case PIXEL_FORMAT_RGBA_8888:
         case PIXEL_FORMAT_RGBX_8888:
         case PIXEL_FORMAT_BGRA_8888:
+        case PIXEL_FORMAT_RGBA_1010102:
             return 32;
         case PIXEL_FORMAT_RGB_888:
             return 24;
diff --git a/libs/ui/tests/Android.bp b/libs/ui/tests/Android.bp
index c4f34d5..6733505 100644
--- a/libs/ui/tests/Android.bp
+++ b/libs/ui/tests/Android.bp
@@ -21,26 +21,6 @@
 }
 
 cc_test {
-    name: "vec_test",
-    srcs: ["vec_test.cpp"],
-}
-
-cc_test {
-    name: "mat_test",
-    srcs: ["mat_test.cpp"],
-}
-
-cc_test {
-    name: "half_test",
-    srcs: ["half_test.cpp"],
-}
-
-cc_test {
-    name: "quat_test",
-    srcs: ["quat_test.cpp"],
-}
-
-cc_test {
     name: "colorspace_test",
     shared_libs: ["libui"],
     srcs: ["colorspace_test.cpp"],
diff --git a/libs/ui/tools/Android.bp b/libs/ui/tools/Android.bp
new file mode 100644
index 0000000..fb46c2b
--- /dev/null
+++ b/libs/ui/tools/Android.bp
@@ -0,0 +1,35 @@
+//
+// 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.
+//
+
+cc_defaults {
+    name: "libui_tools_default",
+    clang_cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+}
+
+cc_binary {
+    name: "lutgen",
+    cppflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+    shared_libs: ["libui"],
+    srcs: ["lutgen.cpp"],
+}
diff --git a/libs/ui/tools/lutgen.cpp b/libs/ui/tools/lutgen.cpp
new file mode 100644
index 0000000..97b0822
--- /dev/null
+++ b/libs/ui/tools/lutgen.cpp
@@ -0,0 +1,196 @@
+/*
+ * 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.
+ */
+
+#include <algorithm>
+#include <fstream>
+#include <iomanip>
+#include <iostream>
+#include <string>
+
+#include <getopt.h>
+
+#include <ui/ColorSpace.h>
+
+using namespace android;
+using namespace std;
+
+uint32_t gSize = 32;
+ColorSpace gColorSpaceSrc = ColorSpace::DisplayP3();
+ColorSpace gColorSpaceDst = ColorSpace::extendedSRGB();
+string gNameSrc = "DisplayP3";
+string gNameDst = "extendedSRGB";
+
+static void printHelp() {
+    cout << "lutgen -d SIZE -s SOURCE -t TARGET <lut file>" << endl;
+    cout << endl;
+    cout << "Generate a 3D LUT to convert between two color spaces." << endl;
+    cout << endl;
+    cout << "If <lut file> ends in .inc, data is generated without the array declaration." << endl;
+    cout << endl;
+    cout << "Options:" << endl;
+    cout << "  --help, -h" << endl;
+    cout << "    print this message" << endl;
+    cout << "  --dimension=, -d" << endl;
+    cout << "    the dimension of the 3D LUT. Example: 17 for a 17x17x17 LUT. 32 by default" << endl;
+    cout << "  --source=COLORSPACE, -s" << endl;
+    cout << "    the source color space, see below for available names. DisplayP3 by default" << endl;
+    cout << "  --target=COLORSPACE, -t" << endl;
+    cout << "    the target color space, see below for available names. extendedSRGB by default" << endl;
+    cout << endl;
+    cout << "Colorspace names:" << endl;
+    cout << "    sRGB" << endl;
+    cout << "    linearSRGB" << endl;
+    cout << "    extendedSRGB" << endl;
+    cout << "    linearExtendedSRGB" << endl;
+    cout << "    NTSC" << endl;
+    cout << "    BT709" << endl;
+    cout << "    BT2020" << endl;
+    cout << "    AdobeRGB" << endl;
+    cout << "    ProPhotoRGB" << endl;
+    cout << "    DisplayP3" << endl;
+    cout << "    DCIP3" << endl;
+    cout << "    ACES" << endl;
+    cout << "    ACEScg" << endl;
+}
+
+static const ColorSpace findColorSpace(const string& name) {
+    if (name == "linearSRGB") return ColorSpace::linearSRGB();
+    if (name == "extendedSRGB") return ColorSpace::extendedSRGB();
+    if (name == "linearExtendedSRGB") return ColorSpace::linearExtendedSRGB();
+    if (name == "NTSC") return ColorSpace::NTSC();
+    if (name == "BT709") return ColorSpace::BT709();
+    if (name == "BT2020") return ColorSpace::BT2020();
+    if (name == "AdobeRGB") return ColorSpace::AdobeRGB();
+    if (name == "ProPhotoRGB") return ColorSpace::ProPhotoRGB();
+    if (name == "DisplayP3") return ColorSpace::DisplayP3();
+    if (name == "DCIP3") return ColorSpace::DCIP3();
+    if (name == "ACES") return ColorSpace::ACES();
+    if (name == "ACEScg") return ColorSpace::ACEScg();
+    return ColorSpace::sRGB();
+}
+
+static int handleCommandLineArgments(int argc, char* argv[]) {
+    static constexpr const char* OPTSTR = "h:d:s:t:";
+    static const struct option OPTIONS[] = {
+            { "help",       no_argument,       0, 'h' },
+            { "dimension",  required_argument, 0, 'd' },
+            { "source",     required_argument, 0, 's' },
+            { "target",     required_argument, 0, 't' },
+            { 0, 0, 0, 0 }  // termination of the option list
+    };
+
+    int opt;
+    int index = 0;
+
+    while ((opt = getopt_long(argc, argv, OPTSTR, OPTIONS, &index)) >= 0) {
+        string arg(optarg ? optarg : "");
+        switch (opt) {
+            default:
+            case 'h':
+                printHelp();
+                exit(0);
+                break;
+            case 'd':
+                gSize = max(2, min(stoi(arg), 256));
+                break;
+            case 's':
+                gNameSrc = arg;
+                gColorSpaceSrc = findColorSpace(arg);
+                break;
+            case 't':
+                gNameDst = arg;
+                gColorSpaceDst = findColorSpace(arg);
+                break;
+        }
+    }
+
+    return optind;
+}
+
+int main(int argc, char* argv[]) {
+    int optionIndex = handleCommandLineArgments(argc, argv);
+    int numArgs = argc - optionIndex;
+
+    if (numArgs < 1) {
+        printHelp();
+        return 1;
+    }
+    
+    bool isInclude = false;
+
+    string filename(argv[optionIndex]);
+    size_t index = filename.find_last_of('.');
+
+    if (index != string::npos) {
+        string extension(filename.substr(index + 1));
+        isInclude = extension == "inc";
+    }
+
+    ofstream outputStream(filename, ios::trunc);
+    if (outputStream.good()) {
+        auto lut = ColorSpace::createLUT(gSize, gColorSpaceSrc, gColorSpaceDst);
+        auto data = lut.get();
+
+        outputStream << "// generated with lutgen " << filename.c_str() << endl;
+        outputStream << "// 3D LUT stored as an RGB16F texture, in GL order" << endl;
+        outputStream << "// Size is " << gSize << "x" << gSize << "x" << gSize << endl;
+
+        string src(gNameSrc);
+        string dst(gNameDst);
+
+        if (!isInclude) {
+            transform(src.begin(), src.end(), src.begin(), ::toupper);
+            transform(dst.begin(), dst.end(), dst.begin(), ::toupper);
+
+            outputStream << "const size_t LUT_" << src << "_TO_" << dst << "_SIZE = " << gSize << endl;
+            outputStream << "const uint16_t LUT_" << src << "_TO_" << dst << "[] = {";
+        } else {
+            outputStream << "// From " << src << " to " << dst << endl;
+        }
+
+        for (size_t z = 0; z < gSize; z++) {
+            for (size_t y = 0; y < gSize; y++) {
+                for (size_t x = 0; x < gSize; x++) {
+                    if (x % 4 == 0) outputStream << endl << "    ";
+
+                    half3 rgb = half3(*data++);
+
+                    const uint16_t r = rgb.r.getBits();
+                    const uint16_t g = rgb.g.getBits();
+                    const uint16_t b = rgb.b.getBits();
+
+                    outputStream << "0x" << setfill('0') << setw(4) << hex << r << ", ";
+                    outputStream << "0x" << setfill('0') << setw(4) << hex << g << ", ";
+                    outputStream << "0x" << setfill('0') << setw(4) << hex << b << ", ";
+                }
+            }
+        }
+
+        if (!isInclude) {
+            outputStream << endl << "}; // end LUT" << endl;
+        }
+
+        outputStream << endl;
+        outputStream.flush();
+        outputStream.close();
+    } else {
+        cerr << "Could not write to file: " << filename << endl;
+        return 1;
+
+    }
+
+    return 0;
+}
diff --git a/libs/vr/libbufferhub/bufferhub_tests.cpp b/libs/vr/libbufferhub/bufferhub_tests.cpp
index 0b9e0cc..fa61c4a 100644
--- a/libs/vr/libbufferhub/bufferhub_tests.cpp
+++ b/libs/vr/libbufferhub/bufferhub_tests.cpp
@@ -1,4 +1,3 @@
-#include <android/native_window.h>
 #include <gtest/gtest.h>
 #include <private/dvr/buffer_hub_client.h>
 
diff --git a/libs/vr/libbufferhub/include/private/dvr/native_buffer.h b/libs/vr/libbufferhub/include/private/dvr/native_buffer.h
index afed052..f9b6975 100644
--- a/libs/vr/libbufferhub/include/private/dvr/native_buffer.h
+++ b/libs/vr/libbufferhub/include/private/dvr/native_buffer.h
@@ -3,7 +3,6 @@
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
-#include <android/native_window.h>
 #include <log/log.h>
 #include <system/window.h>
 #include <ui/ANativeObjectBase.h>
diff --git a/libs/vr/libdisplay/Android.mk b/libs/vr/libdisplay/Android.mk
index f0e62df..6a9458c 100644
--- a/libs/vr/libdisplay/Android.mk
+++ b/libs/vr/libdisplay/Android.mk
@@ -46,7 +46,8 @@
 	libui \
 	libgui \
 	libhardware \
-	libsync
+	libsync \
+	libnativewindow \
 
 staticLibraries := \
 	libbufferhub \
diff --git a/libs/vr/libdisplay/display_manager_client.cpp b/libs/vr/libdisplay/display_manager_client.cpp
index f454b08..8fd3627 100644
--- a/libs/vr/libdisplay/display_manager_client.cpp
+++ b/libs/vr/libdisplay/display_manager_client.cpp
@@ -41,6 +41,23 @@
   delete client;
 }
 
+int dvrDisplayManagerClientGetEventFd(DvrDisplayManagerClient* client) {
+  return client->client->event_fd();
+}
+
+int dvrDisplayManagerClientTranslateEpollEventMask(
+    DvrDisplayManagerClient* client, int in_events, int* out_events) {
+  auto result = client->client->GetChannel()->GetEventMask(in_events);
+
+  if (!result) {
+    return -EIO;
+  }
+
+  *out_events = result.get();
+
+  return 0;
+}
+
 int dvrDisplayManagerClientGetSurfaceList(
     DvrDisplayManagerClient* client,
     DvrDisplayManagerClientSurfaceList** surface_list) {
diff --git a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
index f28c1e4..8ba9175 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
@@ -19,6 +19,21 @@
 
 void dvrDisplayManagerClientDestroy(DvrDisplayManagerClient* client);
 
+// Return an event fd for checking if there was an event on the server
+// Note that the only event which will be flagged is POLLIN. You must use
+// dvrDisplayManagerClientTranslateEpollEventMask in order to get the real
+// event flags.
+// @return the fd
+int dvrDisplayManagerClientGetEventFd(DvrDisplayManagerClient* client);
+
+// Once you have received an epoll event, you must translate it to its true
+// flags. This is a workaround for working with UDS.
+// @param in_events pass in the epoll revents that were initially returned
+// @param on success, this value will be overwritten with the true epoll values
+// @return 0 on success, non-zero otherwise
+int dvrDisplayManagerClientTranslateEpollEventMask(
+    DvrDisplayManagerClient* client, int in_events, int* out_events);
+
 // If successful, populates |surface_list| with a list of application
 // surfaces the display is currently using.
 //
diff --git a/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h b/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h
index 645ccce..4ecd8d4 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_manager_client_impl.h
@@ -20,6 +20,9 @@
   int GetSurfaceBuffers(
       int surface_id, std::vector<std::unique_ptr<BufferConsumer>>* consumers);
 
+  using Client::event_fd;
+  using Client::GetChannel;
+
  private:
   friend BASE;
 
diff --git a/libs/vr/libdvrgraphics/Android.mk b/libs/vr/libdvrgraphics/Android.mk
index b95b18e..b9e601c 100644
--- a/libs/vr/libdvrgraphics/Android.mk
+++ b/libs/vr/libdvrgraphics/Android.mk
@@ -29,6 +29,9 @@
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(includeFiles)
 LOCAL_SHARED_LIBRARIES := $(sharedLibraries)
 LOCAL_STATIC_LIBRARIES := $(staticLibraries)
+# Rather than add this header-file-only library to all users of libdvrgraphics,
+# include it here.
+LOCAL_WHOLE_STATIC_LIBRARIES := libarect
 LOCAL_MODULE := libdvrgraphics
 include $(BUILD_STATIC_LIBRARY)
 
diff --git a/libs/vr/libeds/Android.mk b/libs/vr/libeds/Android.mk
index 373e68e..fd2c56e 100644
--- a/libs/vr/libeds/Android.mk
+++ b/libs/vr/libeds/Android.mk
@@ -36,7 +36,8 @@
 	libEGL \
 	libGLESv1_CM \
 	libGLESv2 \
-	libvulkan
+	libvulkan \
+	libandroid
 
 staticLibraries := \
 	libdisplay \
diff --git a/libs/vr/libposepredictor/Android.mk b/libs/vr/libposepredictor/Android.mk
old mode 100644
new mode 100755
index 030f79c..2217819
--- a/libs/vr/libposepredictor/Android.mk
+++ b/libs/vr/libposepredictor/Android.mk
@@ -15,15 +15,18 @@
 LOCAL_PATH := $(call my-dir)
 
 sourceFiles := \
-        linear_pose_predictor.cpp \
+        predictor.cpp \
+        buffered_predictor.cpp \
+        linear_predictor.cpp \
+        polynomial_predictor.cpp \
+        dvr_pose_predictor.cpp \
 
 includeFiles := \
-        $(LOCAL_PATH)/include
+        $(LOCAL_PATH)/include \
+        external/eigen \
 
 staticLibraries := \
-        libdvrcommon \
         libsensor \
-        libpdx_default_transport \
 
 sharedLibraries := \
 
@@ -39,11 +42,12 @@
 LOCAL_MODULE := libposepredictor
 include $(BUILD_STATIC_LIBRARY)
 
-
 include $(CLEAR_VARS)
 LOCAL_MODULE_TAGS := optional
 LOCAL_SRC_FILES := \
-        linear_pose_predictor_tests.cpp \
+        predictor_tests.cpp \
+        linear_predictor_tests.cpp \
+        polynomial_predictor_tests.cpp \
 
 LOCAL_STATIC_LIBRARIES := libposepredictor $(staticLibraries)
 LOCAL_SHARED_LIBRARIES := $(sharedLibraries)
diff --git a/libs/vr/libposepredictor/buffered_predictor.cpp b/libs/vr/libposepredictor/buffered_predictor.cpp
new file mode 100644
index 0000000..f3b41dc
--- /dev/null
+++ b/libs/vr/libposepredictor/buffered_predictor.cpp
@@ -0,0 +1,38 @@
+#include <buffered_predictor.h>
+
+namespace posepredictor {
+
+BufferedPredictor::BufferedPredictor(size_t buffer_size) {
+  buffer_.resize(buffer_size);
+}
+
+void BufferedPredictor::BufferSample(const Pose& sample) {
+  const auto& prev_sample = buffer_[current_pose_index_];
+
+  // If we are updating a sample (the same time stamp), do not advance the
+  // counter.
+  if (sample.time_ns != prev_sample.time_ns) {
+    current_pose_index_ = (current_pose_index_ + 1) % buffer_.size();
+  }
+
+  buffer_[current_pose_index_] = sample;
+
+  // Make sure the subsequent orientations are the closest in quaternion space.
+  if (PrevSample(1).orientation.coeffs().dot(sample.orientation.coeffs()) < 0) {
+    // Flip the quaternion to be closest to the previous sample.
+    buffer_[current_pose_index_].orientation =
+        quat(-sample.orientation.w(), -sample.orientation.x(),
+             -sample.orientation.y(), -sample.orientation.z());
+  }
+
+  ++num_poses_added_;
+}
+
+const Pose& BufferedPredictor::PrevSample(size_t index) const {
+  // We must not request a pose too far in the past.
+  assert(index < buffer_.size());
+  return buffer_[(current_pose_index_ - index + buffer_.size()) %
+                 buffer_.size()];
+}
+
+}  // namespace posepredictor
diff --git a/libs/vr/libposepredictor/dvr_pose_predictor.cpp b/libs/vr/libposepredictor/dvr_pose_predictor.cpp
new file mode 100644
index 0000000..7f2ecc0
--- /dev/null
+++ b/libs/vr/libposepredictor/dvr_pose_predictor.cpp
@@ -0,0 +1,70 @@
+#include <private/dvr/dvr_pose_predictor.h>
+
+namespace android {
+namespace dvr {
+
+namespace {
+template <typename Vec3Type>
+float32x4_t FromVec3(const Vec3Type& from) {
+  return {static_cast<float>(from.x()), static_cast<float>(from.y()),
+          static_cast<float>(from.z()), 0};
+}
+
+template <typename QuatType>
+float32x4_t FromQuat(const QuatType& from) {
+  return {static_cast<float>(from.x()), static_cast<float>(from.y()),
+          static_cast<float>(from.z()), static_cast<float>(from.w())};
+}
+
+}  //  namespace
+
+void AddPredictorPose(posepredictor::Predictor* predictor,
+                      const posepredictor::vec3& start_t_head,
+                      const posepredictor::quat& start_q_head,
+                      int64_t pose_timestamp, DvrPoseAsync* out) {
+  // Feed the predictor.
+  predictor->Add(
+      posepredictor::Pose{pose_timestamp, start_t_head, start_q_head});
+
+  // Fill the output.
+  out->timestamp_ns = pose_timestamp;
+
+  out->translation = FromVec3(start_t_head);
+  out->orientation = FromQuat(start_q_head);
+
+  out->right_translation = out->translation;
+  out->right_orientation = out->orientation;
+
+  const auto velocity = predictor->PredictVelocity(pose_timestamp);
+
+  out->velocity = FromVec3(velocity.linear);
+  out->angular_velocity = FromVec3(velocity.angular);
+
+  out->flags = DVR_POSE_FLAG_HEAD | DVR_POSE_FLAG_VALID;
+  memset(out->pad, 0, sizeof(out->pad));
+}
+
+void PredictPose(const posepredictor::Predictor* predictor, int64_t left_ns,
+                 int64_t right_ns, DvrPoseAsync* out) {
+  const auto left_pose = predictor->Predict(left_ns);
+  const auto right_pose = predictor->Predict(right_ns);
+  const auto velocity = predictor->PredictVelocity((left_ns + right_ns) / 2);
+
+  // Fill the output.
+  out->timestamp_ns = left_ns;
+
+  out->translation = FromVec3(left_pose.position);
+  out->orientation = FromQuat(left_pose.orientation);
+
+  out->right_translation = FromVec3(right_pose.position);
+  out->right_orientation = FromQuat(right_pose.orientation);
+
+  out->velocity = FromVec3(velocity.linear);
+  out->angular_velocity = FromVec3(velocity.angular);
+
+  out->flags = DVR_POSE_FLAG_HEAD | DVR_POSE_FLAG_VALID;
+  memset(out->pad, 0, sizeof(out->pad));
+}
+
+}  //  dvr
+}  //  android
diff --git a/libs/vr/libposepredictor/include/buffered_predictor.h b/libs/vr/libposepredictor/include/buffered_predictor.h
new file mode 100644
index 0000000..eab0150
--- /dev/null
+++ b/libs/vr/libposepredictor/include/buffered_predictor.h
@@ -0,0 +1,40 @@
+#ifndef POSEPREDICTOR_BUFFERED_PREDICTOR_H_
+#define POSEPREDICTOR_BUFFERED_PREDICTOR_H_
+
+#include <vector>
+
+#include "predictor.h"
+
+namespace posepredictor {
+
+// Keeps the previous n poses around in a ring buffer.
+// The orientations are also unrolled so that a . b > 0 for two subsequent
+// quaternions a and b.
+class BufferedPredictor : public Predictor {
+ public:
+  BufferedPredictor(size_t buffer_size);
+  ~BufferedPredictor() = default;
+
+ protected:
+  // Add a pose sample into the buffer.
+  void BufferSample(const Pose& sample);
+
+  // Grab a previous sample.
+  // index = 0: last sample
+  // index = 1: the one before that
+  // ...
+  const Pose& PrevSample(size_t index) const;
+
+  // Where we keep the last n poses.
+  std::vector<Pose> buffer_;
+
+  // Where the last valid pose is in the buffer.
+  size_t current_pose_index_ = 0;
+
+  // The number of poses we have added.
+  size_t num_poses_added_ = 0;
+};
+
+}  // namespace posepredictor
+
+#endif  // POSEPREDICTOR_BUFFERED_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/include/linear_predictor.h b/libs/vr/libposepredictor/include/linear_predictor.h
new file mode 100644
index 0000000..0d17ec5
--- /dev/null
+++ b/libs/vr/libposepredictor/include/linear_predictor.h
@@ -0,0 +1,43 @@
+#ifndef POSEPREDICTOR_LINEAR_POSE_PREDICTOR_H_
+#define POSEPREDICTOR_LINEAR_POSE_PREDICTOR_H_
+
+#include "predictor.h"
+
+namespace posepredictor {
+
+// This class makes a linear prediction using the last two samples we received.
+class LinearPosePredictor : public Predictor {
+ public:
+  LinearPosePredictor() = default;
+
+  // Add a new sample.
+  void Add(const Pose& sample) override;
+
+  // Predict using the last two samples.
+  Pose Predict(int64_t time_ns) const override;
+
+  // Just copy the velocity over.
+  Velocity PredictVelocity(int64_t time_ns) const override;
+
+ private:
+  // The index of the last sample we received.
+  size_t current_index_ = 0;
+
+  // The previous two samples.
+  Pose samples_[2];
+
+  // Experimental
+  bool forward_predict_angular_speed_ = false;
+
+  // Transient variables updated when a sample is added.
+  vec3 velocity_ = vec3::Zero();
+  vec3 rotational_velocity_ = vec3::Zero();
+  vec3 rotational_axis_ = vec3::Zero();
+  real last_angular_speed_ = 0;
+  real angular_speed_ = 0;
+  real angular_accel_ = 0;
+};
+
+}  // namespace posepredictor
+
+#endif  // POSEPREDICTOR_LINEAR_POSE_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/include/polynomial_predictor.h b/libs/vr/libposepredictor/include/polynomial_predictor.h
new file mode 100644
index 0000000..762afd3
--- /dev/null
+++ b/libs/vr/libposepredictor/include/polynomial_predictor.h
@@ -0,0 +1,168 @@
+#ifndef POSEPREDICTOR_POLYNOMIAL_POSE_PREDICTOR_H_
+#define POSEPREDICTOR_POLYNOMIAL_POSE_PREDICTOR_H_
+
+#include <vector>
+
+#include <Eigen/Dense>
+
+#include "buffered_predictor.h"
+
+namespace posepredictor {
+
+// Make a polynomial prediction of the form
+// y = coefficients_[0] + coefficients_[1] * t + coefficients_[2] * t^2 + ...
+// where t is time and y is the position and orientation.
+// We recompute the coefficients whenever we add a new sample using
+// training_window previous samples.
+template <size_t PolynomialDegree, size_t TrainingWindow>
+class PolynomialPosePredictor : public BufferedPredictor {
+ public:
+  PolynomialPosePredictor(real regularization = 1e-9)
+      : BufferedPredictor(TrainingWindow), regularization_(regularization) {
+    static_assert(PolynomialDegree + 1 >= TrainingWindow,
+                  "Underconstrained polynomial regressor");
+  }
+
+  ~PolynomialPosePredictor() = default;
+
+  // We convert pose samples into a vector for matrix arithmetic using this
+  // mapping.
+  enum Components {
+    kPositionX = 0,
+    kPositionY,
+    kPositionZ,
+    kOrientationX,
+    kOrientationY,
+    kOrientationZ,
+    kOrientationW,
+    kNumComponents
+  };
+
+  // Add a new sample.
+  void Add(const Pose& sample) override {
+    // Add the sample to the ring buffer.
+    BufferedPredictor::BufferSample(sample);
+
+    Eigen::Matrix<real, TrainingWindow, kNumComponents> values;
+
+    // Get the pose samples into matrices for fitting.
+    real t_vector[TrainingWindow];
+    for (size_t i = 0; i < TrainingWindow; ++i) {
+      const auto& prev_sample = PrevSample(i);
+
+      t_vector[i] = NsToT(prev_sample.time_ns);
+
+      // Save the values we will be fitting to at each sample time.
+      values(i, kPositionX) = prev_sample.position.x();
+      values(i, kPositionY) = prev_sample.position.y();
+      values(i, kPositionZ) = prev_sample.position.z();
+      values(i, kOrientationX) = prev_sample.orientation.x();
+      values(i, kOrientationY) = prev_sample.orientation.y();
+      values(i, kOrientationZ) = prev_sample.orientation.z();
+      values(i, kOrientationW) = prev_sample.orientation.w();
+    }
+
+    // Some transient matrices for solving for coefficient matrix.
+    Eigen::Matrix<real, PolynomialDegree + 1, PolynomialDegree + 1> M;
+    Eigen::Matrix<real, PolynomialDegree + 1, 1> d;
+    Eigen::Matrix<real, PolynomialDegree + 1, 1> p;
+
+    // Create a polynomial fit for each component.
+    for (size_t component = 0; component < kNumComponents; ++component) {
+      // A = [ 1 t t^2 ... ]'
+      // x = [ coefficients[0] coefficients[1] .... ]'
+      // b = [ position.x ]'
+      // We would like to solve A' x + regularization * I = b'
+      // given the samples we have in our training window.
+      //
+      // The loop below will compute:
+      // M = A' * A
+      // d = A' * b
+      // so we can solve M * coefficients + regularization * I = b
+
+      M.setIdentity();
+      d.setZero();
+      p[0] = 1;
+
+      // M = regularization * I
+      M = M * regularization_;
+
+      // Accumulate the poses in the training window.
+      for (size_t i = 0; i < TrainingWindow; ++i) {
+        // Compute the polynomial at this sample.
+        for (size_t j = 1; j <= PolynomialDegree; ++j) {
+          p[j] = p[j - 1] * t_vector[i];
+        }
+
+        // Accumulate the left and right hand sides.
+        M = M + p * p.transpose();
+        d = d + p * values(i, component);
+      }
+
+      // M is symmetric, positive semi-definite.
+      // Note: This is not the most accurate solver out there but is fast.
+      coefficients_.row(component) = Eigen::LLT<Eigen::MatrixXd>(M).solve(d);
+    }
+  }
+
+  // Predict using the polynomial coefficients.
+  Pose Predict(int64_t time_ns) const override {
+    // Predict the left side.
+    const auto components = SamplePolynomial(time_ns);
+
+    return {time_ns,
+            vec3(components[kPositionX], components[kPositionY],
+                 components[kPositionZ]),
+            quat(components[kOrientationW], components[kOrientationX],
+                 components[kOrientationY], components[kOrientationZ])
+                .normalized()};
+  }
+
+ private:
+  // Evaluate the polynomial at a particular time.
+  Eigen::Matrix<real, kNumComponents, 1> SamplePolynomial(
+      int64_t time_ns) const {
+    const auto t = NsToT(time_ns);
+    Eigen::Matrix<real, PolynomialDegree + 1, 1> polynomial;
+    real current_polynomial = t;
+
+    // Compute polynomial = [ 1 t t^2 ... ]
+    polynomial[0] = 1;
+    for (size_t degree = 1; degree <= PolynomialDegree;
+         ++degree, current_polynomial *= t) {
+      polynomial[degree] = polynomial[degree - 1] * t;
+    }
+
+    // The coefficients_ = [ numComponents x (polynomial degree + 1) ].
+    return coefficients_ * polynomial;
+  }
+
+  // Convert a time in nanoseconds to t.
+  // We could use the seconds as t but this would create make it more difficult
+  // to tweak the regularization amount. So we subtract the last sample time so
+  // the scale of the regularization constant doesn't change as a function of
+  // time.
+  real NsToT(int64_t time_ns) const {
+    return NsToSeconds(time_ns - buffer_[current_pose_index_].time_ns);
+  }
+
+  // The ridge regularization constant.
+  real regularization_;
+
+  // This is where we store the polynomial coefficients.
+  Eigen::Matrix<real, kNumComponents, PolynomialDegree + 1> coefficients_;
+};
+
+// Some common polynomial types.
+extern template class PolynomialPosePredictor<1, 2>;
+extern template class PolynomialPosePredictor<2, 3>;
+extern template class PolynomialPosePredictor<3, 4>;
+extern template class PolynomialPosePredictor<4, 5>;
+
+using QuadricPosePredictor = PolynomialPosePredictor<2, 3>;
+using CubicPosePredictor = PolynomialPosePredictor<3, 4>;
+using QuarticPosePredictor = PolynomialPosePredictor<4, 5>;
+
+}  // namespace posepredictor
+
+#endif  // POSEPREDICTOR_POLYNOMIAL_POSE_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/include/predictor.h b/libs/vr/libposepredictor/include/predictor.h
new file mode 100644
index 0000000..78db272
--- /dev/null
+++ b/libs/vr/libposepredictor/include/predictor.h
@@ -0,0 +1,73 @@
+#ifndef POSEPREDICTOR_POSE_PREDICTOR_H_
+#define POSEPREDICTOR_POSE_PREDICTOR_H_
+
+#include <Eigen/Core>
+#include <Eigen/Geometry>
+
+// This is the only file you need to include for pose prediction.
+
+namespace posepredictor {
+
+// The precision for the predictor.
+// TODO(okana): double precision is probably not necessary.
+typedef double real;
+
+using vec3 = Eigen::Matrix<real, 3, 1>;
+using quat = Eigen::Quaternion<real>;
+
+// Encapsulates a pose sample.
+struct Pose {
+  int64_t time_ns = 0;
+  vec3 position = vec3::Zero();
+  quat orientation = quat::Identity();
+};
+
+// Encapsulates the derivative at a time.
+struct Velocity {
+  vec3 linear = vec3::Zero();
+  vec3 angular = vec3::Zero();
+};
+
+// The preset types we support.
+enum class PredictorType { Linear, Quadric, Cubic };
+
+// This is an abstract base class for prediction 6dof pose given
+// a set of samples.
+class Predictor {
+ public:
+  Predictor() = default;
+  virtual ~Predictor() = default;
+
+  // The nanoseconds to use for finite differencing.
+  static constexpr int64_t kFiniteDifferenceNs = 100;
+
+  // Instantiate a new pose predictor for a type.
+  static std::unique_ptr<Predictor> Create(PredictorType type);
+
+  // Compute the angular velocity from orientation start_orientation to
+  // end_orientation in delta_time.
+  static vec3 AngularVelocity(const quat& start_orientation,
+                              const quat& end_orientation, real delta_time);
+
+  // Add a pose sample coming from the sensors.
+  virtual void Add(const Pose& sample) = 0;
+
+  // Make a pose prediction for at specific time.
+  virtual Pose Predict(int64_t time_ns) const = 0;
+
+  // Evaluate velocity at a particular time.
+  // The default implementation uses finite differencing.
+  virtual Velocity PredictVelocity(int64_t time_ns) const;
+
+  // Helpers
+  static real NsToSeconds(int64_t time_ns) {
+    return static_cast<real>(time_ns / 1e9);
+  }
+  static int64_t SecondsToNs(real seconds) {
+    return static_cast<int64_t>(seconds * 1e9);
+  }
+};
+
+}  // namespace posepredictor
+
+#endif  // POSEPREDICTOR_POSE_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/include/private/dvr/dvr_pose_predictor.h b/libs/vr/libposepredictor/include/private/dvr/dvr_pose_predictor.h
new file mode 100644
index 0000000..bd2dcbc
--- /dev/null
+++ b/libs/vr/libposepredictor/include/private/dvr/dvr_pose_predictor.h
@@ -0,0 +1,25 @@
+#ifndef ANDROID_DVR_POSE_PREDICTOR_H_
+#define ANDROID_DVR_POSE_PREDICTOR_H_
+
+#include <dvr/pose_client.h>
+#include <predictor.h>
+
+// Some shim functions for connecting dvr to pose predictor.
+
+namespace android {
+namespace dvr {
+
+// Feed a pose to the predictor.
+void AddPredictorPose(posepredictor::Predictor* predictor,
+                      const posepredictor::vec3& start_t_head,
+                      const posepredictor::quat& start_q_head,
+                      int64_t pose_timestamp, DvrPoseAsync* out);
+
+// Make a prediction for left and right eyes.
+void PredictPose(const posepredictor::Predictor* predictor, int64_t left_ns,
+                 int64_t right_ns, DvrPoseAsync* out);
+
+}  // namespace dvr
+}  // namespace android
+
+#endif  // ANDROID_DVR_POSE_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/include/private/dvr/linear_pose_predictor.h b/libs/vr/libposepredictor/include/private/dvr/linear_pose_predictor.h
deleted file mode 100644
index 1efe938..0000000
--- a/libs/vr/libposepredictor/include/private/dvr/linear_pose_predictor.h
+++ /dev/null
@@ -1,43 +0,0 @@
-#ifndef ANDROID_DVR_POSE_PREDICTOR_H_
-#define ANDROID_DVR_POSE_PREDICTOR_H_
-
-#include <private/dvr/pose_predictor.h>
-
-namespace android {
-namespace dvr {
-
-// This class makes a linear prediction using the last two samples we received.
-class LinearPosePredictor : public PosePredictor {
- public:
-  LinearPosePredictor() = default;
-
-  // Add a new sample.
-  void Add(const Sample& sample, DvrPoseAsync* out_pose) override;
-
-  // Predict using the last two samples.
-  void Predict(int64_t left_time_ns, int64_t right_time_ns,
-               DvrPoseAsync* out_pose) const override;
-
- private:
-  // The index of the last sample we received.
-  size_t current_index_ = 0;
-
-  // The previous two samples.
-  Sample samples_[2];
-
-  // Experimental
-  bool forward_predict_angular_speed_ = false;
-
-  // Transient variables updated when a sample is added.
-  vec3d velocity_ = vec3d::Zero();
-  vec3d rotational_velocity_ = vec3d::Zero();
-  vec3d rotational_axis_ = vec3d::Zero();
-  double last_angular_speed_ = 0;
-  double angular_speed_ = 0;
-  double angular_accel_ = 0;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_POSE_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/include/private/dvr/pose_predictor.h b/libs/vr/libposepredictor/include/private/dvr/pose_predictor.h
deleted file mode 100644
index 719edbe..0000000
--- a/libs/vr/libposepredictor/include/private/dvr/pose_predictor.h
+++ /dev/null
@@ -1,47 +0,0 @@
-#ifndef ANDROID_DVR_LINEAR_POSE_PREDICTOR_H_
-#define ANDROID_DVR_LINEAR_POSE_PREDICTOR_H_
-
-#include <private/dvr/pose_client_internal.h>
-#include <private/dvr/types.h>
-
-namespace android {
-namespace dvr {
-
-// This is an abstract base class for prediction 6dof pose given
-// a set of samples.
-//
-// TODO(okana): Create a framework for testing different subclasses for
-// performance and accuracy.
-class PosePredictor {
- public:
-  PosePredictor() = default;
-  virtual ~PosePredictor() = default;
-
-  // Encapsulates a pose sample.
-  struct Sample {
-    vec3d position = vec3d::Zero();
-    quatd orientation = quatd::Identity();
-    int64_t time_ns = 0;
-  };
-
-  // Add a pose sample coming from the sensors.
-  // Returns this sample as a dvr pose.
-  //
-  // We will use the returned pose if prediction is not enabled.
-  virtual void Add(const Sample& sample, DvrPoseAsync* out_pose) = 0;
-
-  // Make a pose prediction for the left and right eyes at specific times.
-  virtual void Predict(int64_t left_time_ns, int64_t right_time_ns,
-                       DvrPoseAsync* out_pose) const = 0;
-
-  // Helpers
-  static double NsToSeconds(int64_t time_ns) { return time_ns / 1e9; }
-  static int64_t SecondsToNs(double seconds) {
-    return static_cast<int64_t>(seconds * 1e9);
-  }
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_LINEAR_POSE_PREDICTOR_H_
diff --git a/libs/vr/libposepredictor/linear_pose_predictor.cpp b/libs/vr/libposepredictor/linear_pose_predictor.cpp
deleted file mode 100644
index de1b951..0000000
--- a/libs/vr/libposepredictor/linear_pose_predictor.cpp
+++ /dev/null
@@ -1,147 +0,0 @@
-#include <log/log.h>
-
-#include <private/dvr/linear_pose_predictor.h>
-
-namespace android {
-namespace dvr {
-
-using AngleAxisd = Eigen::AngleAxis<double>;
-
-void LinearPosePredictor::Add(const Sample& sample, DvrPoseAsync* out_pose) {
-  // If we are receiving a new sample, move the index to the next item.
-  // If the time stamp is the same as the last frame, we will just overwrite
-  // it with the new data.
-  if (sample.time_ns != samples_[current_index_].time_ns) {
-    current_index_ ^= 1;
-  }
-
-  // Save the sample.
-  samples_[current_index_] = sample;
-
-  // The previous sample we received.
-  const auto& previous_sample = samples_[current_index_ ^ 1];
-
-  // Ready to compute velocities.
-  const auto pose_delta_time =
-      NsToSeconds(sample.time_ns - previous_sample.time_ns);
-
-  const double inverse_dt = 1. / pose_delta_time;
-  if (pose_delta_time > 0.0) {
-    velocity_ = (sample.position - previous_sample.position) * inverse_dt;
-  } else {
-    velocity_ = vec3d::Zero();
-  }
-
-  quatd delta_q = sample.orientation.inverse() * previous_sample.orientation;
-  // Check that delta_q.w() == 1, Eigen doesn't respect this convention. If
-  // delta_q.w() == -1, we'll get the opposite velocity.
-  if (delta_q.w() < 0) {
-    delta_q.w() = -delta_q.w();
-    delta_q.vec() = -delta_q.vec();
-  }
-  rotational_velocity_ = -2.0 * delta_q.vec() * inverse_dt;
-
-  // Temporary experiment with acceleration estimate.
-  angular_speed_ = rotational_velocity_.norm();
-  angular_accel_ = 0.0;
-  if (forward_predict_angular_speed_) {
-    angular_accel_ =
-        pose_delta_time > 0.0
-            ? (angular_speed_ - last_angular_speed_) / pose_delta_time
-            : 0.0;
-  }
-  last_angular_speed_ = angular_speed_;
-
-  rotational_axis_ = vec3d(0.0, 1.0, 0.0);
-  if (angular_speed_ > 0.0) {
-    rotational_axis_ = rotational_velocity_ / angular_speed_;
-  }
-
-  out_pose->orientation = {static_cast<float>(sample.orientation.vec().x()),
-                           static_cast<float>(sample.orientation.vec().y()),
-                           static_cast<float>(sample.orientation.vec().z()),
-                           static_cast<float>(sample.orientation.w())};
-
-  out_pose->translation = {static_cast<float>(sample.position.x()),
-                           static_cast<float>(sample.position.y()),
-                           static_cast<float>(sample.position.z()), 0.0f};
-
-  out_pose->right_orientation = {
-      static_cast<float>(sample.orientation.vec().x()),
-      static_cast<float>(sample.orientation.vec().y()),
-      static_cast<float>(sample.orientation.vec().z()),
-      static_cast<float>(sample.orientation.w())};
-
-  out_pose->right_translation = {static_cast<float>(sample.position.x()),
-                                 static_cast<float>(sample.position.y()),
-                                 static_cast<float>(sample.position.z()), 0.0f};
-
-  out_pose->angular_velocity = {static_cast<float>(rotational_velocity_.x()),
-                                static_cast<float>(rotational_velocity_.y()),
-                                static_cast<float>(rotational_velocity_.z()),
-                                0.0f};
-
-  out_pose->velocity = {static_cast<float>(velocity_.x()),
-                        static_cast<float>(velocity_.y()),
-                        static_cast<float>(velocity_.z()), 0.0f};
-  out_pose->timestamp_ns = sample.time_ns;
-  out_pose->flags = DVR_POSE_FLAG_HEAD | DVR_POSE_FLAG_VALID;
-  memset(out_pose->pad, 0, sizeof(out_pose->pad));
-}
-
-void LinearPosePredictor::Predict(int64_t left_time_ns, int64_t right_time_ns,
-                                  DvrPoseAsync* out_pose) const {
-  const auto& sample = samples_[current_index_];
-
-  double dt = NsToSeconds(left_time_ns - sample.time_ns);
-  double r_dt = NsToSeconds(right_time_ns - sample.time_ns);
-
-  // Temporary forward prediction code.
-  auto start_t_head_future = sample.position + velocity_ * dt;
-  auto r_start_t_head_future = sample.position + velocity_ * r_dt;
-  double angle = angular_speed_ * dt;
-  double r_angle = angular_speed_ * r_dt;
-  if (__builtin_expect(forward_predict_angular_speed_, 0)) {
-    angle += 0.5 * angular_accel_ * dt * dt;
-    r_angle += 0.5 * angular_accel_ * r_dt * r_dt;
-  }
-  auto start_q_head_future =
-      sample.orientation * quatd(AngleAxisd(angle, rotational_axis_));
-  auto r_start_q_head_future =
-      sample.orientation * quatd(AngleAxisd(r_angle, rotational_axis_));
-
-  out_pose->orientation = {static_cast<float>(start_q_head_future.x()),
-                           static_cast<float>(start_q_head_future.y()),
-                           static_cast<float>(start_q_head_future.z()),
-                           static_cast<float>(start_q_head_future.w())};
-
-  out_pose->translation = {static_cast<float>(start_t_head_future.x()),
-                           static_cast<float>(start_t_head_future.y()),
-                           static_cast<float>(start_t_head_future.z()), 0.0f};
-
-  out_pose->right_orientation = {static_cast<float>(r_start_q_head_future.x()),
-                                 static_cast<float>(r_start_q_head_future.y()),
-                                 static_cast<float>(r_start_q_head_future.z()),
-                                 static_cast<float>(r_start_q_head_future.w())};
-
-  out_pose->right_translation = {static_cast<float>(r_start_t_head_future.x()),
-                                 static_cast<float>(r_start_t_head_future.y()),
-                                 static_cast<float>(r_start_t_head_future.z()),
-                                 0.0f};
-
-  out_pose->angular_velocity = {static_cast<float>(rotational_velocity_.x()),
-                                static_cast<float>(rotational_velocity_.y()),
-                                static_cast<float>(rotational_velocity_.z()),
-                                0.0f};
-
-  out_pose->velocity = {static_cast<float>(velocity_.x()),
-                        static_cast<float>(velocity_.y()),
-                        static_cast<float>(velocity_.z()), 0.0f};
-
-  out_pose->timestamp_ns = left_time_ns;
-  out_pose->flags = DVR_POSE_FLAG_HEAD | DVR_POSE_FLAG_VALID;
-  memset(out_pose->pad, 0, sizeof(out_pose->pad));
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libposepredictor/linear_pose_predictor_tests.cpp b/libs/vr/libposepredictor/linear_pose_predictor_tests.cpp
deleted file mode 100644
index 6c4f58a..0000000
--- a/libs/vr/libposepredictor/linear_pose_predictor_tests.cpp
+++ /dev/null
@@ -1,185 +0,0 @@
-#include <iostream>
-
-#include <gtest/gtest.h>
-
-#include <private/dvr/linear_pose_predictor.h>
-
-namespace android {
-namespace dvr {
-
-namespace {
-
-// For comparing expected and actual.
-constexpr double kAbsErrorTolerance = 1e-5;
-
-// The default rotation axis we will be using.
-const vec3d kRotationAxis = vec3d(1, 4, 3).normalized();
-
-// Linearly interpolate between a and b.
-vec3d lerp(const vec3d& a, const vec3d& b, double t) { return (b - a) * t + a; }
-
-// Linearly interpolate between two angles and return the resulting rotation as
-// a quaternion (around the kRotationAxis).
-quatd qlerp(double angle1, double angle2, double t) {
-  return quatd(
-      Eigen::AngleAxis<double>((angle2 - angle1) * t + angle1, kRotationAxis));
-}
-
-// Compare two positions.
-void TestPosition(const vec3d& expected, const float32x4_t& actual) {
-  for (int i = 0; i < 3; ++i) {
-    EXPECT_NEAR(expected[i], static_cast<double>(actual[i]),
-                kAbsErrorTolerance);
-  }
-}
-
-// Compare two orientations.
-void TestOrientation(const quatd& expected, const float32x4_t& actual) {
-  // abs(expected.dot(actual)) > 1-eps
-  EXPECT_GE(std::abs(vec4d(actual[0], actual[1], actual[2], actual[3])
-                         .dot(expected.coeffs())),
-            0.99);
-}
-}
-
-// Test the extrapolation from two samples.
-TEST(LinearPosePredictorTest, Extrapolation) {
-  LinearPosePredictor predictor;
-
-  // We wil extrapolate linearly from [position|orientation] 1 -> 2.
-  const vec3d position1(0, 0, 0);
-  const vec3d position2(1, 2, 3);
-  const double angle1 = M_PI * 0.3;
-  const double angle2 = M_PI * 0.5;
-  const quatd orientation1(Eigen::AngleAxis<double>(angle1, kRotationAxis));
-  const quatd orientation2(Eigen::AngleAxis<double>(angle2, kRotationAxis));
-  const int64_t t1_ns = 0;           //< First sample time stamp
-  const int64_t t2_ns = 10;          //< The second sample time stamp
-  const int64_t eval_left_ns = 23;   //< The eval time for left
-  const int64_t eval_right_ns = 31;  //< The eval time for right
-  DvrPoseAsync start_pose, end_pose, extrapolated_pose;
-
-  predictor.Add(
-      PosePredictor::Sample{
-          .position = position1, .orientation = orientation1, .time_ns = t1_ns},
-      &start_pose);
-
-  // The start pose is passthough.
-  TestPosition(position1, start_pose.translation);
-  TestPosition(position1, start_pose.right_translation);
-  TestOrientation(orientation1, start_pose.orientation);
-  TestOrientation(orientation1, start_pose.right_orientation);
-  EXPECT_EQ(t1_ns, start_pose.timestamp_ns);
-
-  predictor.Add(
-      PosePredictor::Sample{
-          .position = position2, .orientation = orientation2, .time_ns = t2_ns},
-      &end_pose);
-
-  TestPosition(position2, end_pose.translation);
-  TestPosition(position2, end_pose.right_translation);
-  TestOrientation(orientation2, end_pose.orientation);
-  TestOrientation(orientation2, end_pose.right_orientation);
-  EXPECT_EQ(t2_ns, end_pose.timestamp_ns);
-
-  // Extrapolate from t1 - t2 to eval_[left/right].
-  predictor.Predict(eval_left_ns, eval_right_ns, &extrapolated_pose);
-
-  // The interpolation factors for left and right.
-  const auto left_t =
-      (eval_left_ns - t1_ns) / static_cast<double>(t2_ns - t1_ns);
-  EXPECT_EQ(2.3, left_t);
-
-  const auto right_t =
-      (eval_right_ns - t1_ns) / static_cast<double>(t2_ns - t1_ns);
-  EXPECT_EQ(3.1, right_t);
-
-  TestPosition(lerp(position1, position2, left_t),
-               extrapolated_pose.translation);
-  TestPosition(lerp(position1, position2, right_t),
-               extrapolated_pose.right_translation);
-  TestOrientation(qlerp(angle1, angle2, left_t), extrapolated_pose.orientation);
-  TestOrientation(qlerp(angle1, angle2, right_t),
-                  extrapolated_pose.right_orientation);
-}
-
-// Test three samples, where the last two samples have the same timestamp.
-TEST(LinearPosePredictorTest, DuplicateSamples) {
-  LinearPosePredictor predictor;
-
-  const vec3d position1(0, 0, 0);
-  const vec3d position2(1, 2, 3);
-  const vec3d position3(2, 2, 3);
-  const double angle1 = M_PI * 0.3;
-  const double angle2 = M_PI * 0.5;
-  const double angle3 = M_PI * 0.65;
-  const quatd orientation1(Eigen::AngleAxis<double>(angle1, kRotationAxis));
-  const quatd orientation2(Eigen::AngleAxis<double>(angle2, kRotationAxis));
-  const quatd orientation3(Eigen::AngleAxis<double>(angle3, kRotationAxis));
-  const int64_t t1_ns = 0;
-  const int64_t t2_ns = 10;
-  const int64_t eval_left_ns = 27;
-  const int64_t eval_right_ns = 31;
-  DvrPoseAsync start_pose, end_pose, extrapolated_pose;
-
-  predictor.Add(
-      PosePredictor::Sample{
-          .position = position1, .orientation = orientation1, .time_ns = t1_ns},
-      &start_pose);
-
-  predictor.Add(
-      PosePredictor::Sample{
-          .position = position2, .orientation = orientation2, .time_ns = t2_ns},
-      &end_pose);
-
-  {
-    // Extrapolate from t1 - t2 to eval_[left/right].
-    predictor.Predict(eval_left_ns, eval_right_ns, &extrapolated_pose);
-
-    // The interpolation factors for left and right.
-    const auto left_t =
-        (eval_left_ns - t1_ns) / static_cast<double>(t2_ns - t1_ns);
-    const auto right_t =
-        (eval_right_ns - t1_ns) / static_cast<double>(t2_ns - t1_ns);
-
-    // Test the result.
-    TestPosition(lerp(position1, position2, left_t),
-                 extrapolated_pose.translation);
-    TestPosition(lerp(position1, position2, right_t),
-                 extrapolated_pose.right_translation);
-    TestOrientation(qlerp(angle1, angle2, left_t),
-                    extrapolated_pose.orientation);
-    TestOrientation(qlerp(angle1, angle2, right_t),
-                    extrapolated_pose.right_orientation);
-  }
-
-  // Sending a duplicate sample here.
-  predictor.Add(
-      PosePredictor::Sample{
-          .position = position3, .orientation = orientation3, .time_ns = t2_ns},
-      &end_pose);
-
-  {
-    // Extrapolate from t1 - t2 to eval_[left/right].
-    predictor.Predict(eval_left_ns, eval_right_ns, &extrapolated_pose);
-
-    // The interpolation factors for left and right.
-    const auto left_t =
-        (eval_left_ns - t1_ns) / static_cast<double>(t2_ns - t1_ns);
-    const auto right_t =
-        (eval_right_ns - t1_ns) / static_cast<double>(t2_ns - t1_ns);
-
-    // Test the result.
-    TestPosition(lerp(position1, position3, left_t),
-                 extrapolated_pose.translation);
-    TestPosition(lerp(position1, position3, right_t),
-                 extrapolated_pose.right_translation);
-    TestOrientation(qlerp(angle1, angle3, left_t),
-                    extrapolated_pose.orientation);
-    TestOrientation(qlerp(angle1, angle3, right_t),
-                    extrapolated_pose.right_orientation);
-  }
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libposepredictor/linear_predictor.cpp b/libs/vr/libposepredictor/linear_predictor.cpp
new file mode 100644
index 0000000..6f924dc
--- /dev/null
+++ b/libs/vr/libposepredictor/linear_predictor.cpp
@@ -0,0 +1,70 @@
+#include <linear_predictor.h>
+
+namespace posepredictor {
+
+using AngleAxis = Eigen::AngleAxis<real>;
+
+void LinearPosePredictor::Add(const Pose& sample) {
+  // If we are receiving a new sample, move the index to the next item.
+  // If the time stamp is the same as the last frame, we will just overwrite
+  // it with the new data.
+  if (sample.time_ns != samples_[current_index_].time_ns) {
+    current_index_ ^= 1;
+  }
+
+  // Save the sample.
+  samples_[current_index_] = sample;
+
+  // The previous sample we received.
+  const auto& previous_sample = samples_[current_index_ ^ 1];
+
+  // Ready to compute velocities.
+  const auto pose_delta_time =
+      NsToSeconds(sample.time_ns - previous_sample.time_ns);
+
+  if (pose_delta_time > 0.0) {
+    velocity_ = (sample.position - previous_sample.position) / pose_delta_time;
+    rotational_velocity_ = Predictor::AngularVelocity(
+        previous_sample.orientation, sample.orientation, pose_delta_time);
+  } else {
+    velocity_ = vec3::Zero();
+    rotational_velocity_ = vec3::Zero();
+  }
+
+  // Temporary experiment with acceleration estimate.
+  angular_speed_ = rotational_velocity_.norm();
+  angular_accel_ = 0.0;
+  if (forward_predict_angular_speed_) {
+    angular_accel_ =
+        pose_delta_time > 0.0
+            ? (angular_speed_ - last_angular_speed_) / pose_delta_time
+            : 0.0;
+  }
+  last_angular_speed_ = angular_speed_;
+
+  rotational_axis_ = vec3(0.0, 1.0, 0.0);
+  if (angular_speed_ > 0.0) {
+    rotational_axis_ = rotational_velocity_ / angular_speed_;
+  }
+}
+
+Pose LinearPosePredictor::Predict(int64_t time_ns) const {
+  const auto& sample = samples_[current_index_];
+
+  const auto dt = NsToSeconds(time_ns - sample.time_ns);
+
+  // Temporary forward prediction code.
+  auto angle = angular_speed_ * dt;
+  if (__builtin_expect(forward_predict_angular_speed_, 0)) {
+    angle += 0.5 * angular_accel_ * dt * dt;
+  }
+
+  return {time_ns, sample.position + velocity_ * dt,
+          sample.orientation * quat(AngleAxis(angle, rotational_axis_))};
+}
+
+Velocity LinearPosePredictor::PredictVelocity(int64_t /* time_ns */) const {
+  return {velocity_, rotational_velocity_};
+}
+
+}  // namespace posepredictor
diff --git a/libs/vr/libposepredictor/linear_predictor_tests.cpp b/libs/vr/libposepredictor/linear_predictor_tests.cpp
new file mode 100644
index 0000000..d94aa2d
--- /dev/null
+++ b/libs/vr/libposepredictor/linear_predictor_tests.cpp
@@ -0,0 +1,170 @@
+#include <gtest/gtest.h>
+
+#include <linear_predictor.h>
+
+namespace posepredictor {
+
+namespace {
+
+// For comparing expected and actual.
+constexpr real kAbsErrorTolerance = 1e-5;
+
+// The default rotation axis we will be using.
+const vec3 kRotationAxis = vec3(1, 4, 3).normalized();
+
+// Linearly interpolate between a and b.
+vec3 lerp(const vec3& a, const vec3& b, real t) { return (b - a) * t + a; }
+
+// Linearly interpolate between two angles and return the resulting rotation as
+// a quaternion (around the kRotationAxis).
+quat qlerp(real angle1, real angle2, real t) {
+  return quat(
+      Eigen::AngleAxis<real>((angle2 - angle1) * t + angle1, kRotationAxis));
+}
+
+// Compare two positions.
+void TestPosition(const vec3& expected, const vec3& actual) {
+  for (int i = 0; i < 3; ++i) {
+    EXPECT_NEAR(expected[i], actual[i], kAbsErrorTolerance);
+  }
+}
+
+// Compare two orientations.
+void TestOrientation(const quat& expected, const quat& actual) {
+  // abs(expected.dot(actual)) > 1-eps
+  EXPECT_GE(std::abs(actual.coeffs().dot(expected.coeffs())), 0.99);
+}
+}
+
+// Test the extrapolation from two samples.
+TEST(LinearPosePredictorTest, Extrapolation) {
+  LinearPosePredictor predictor;
+
+  // We wil extrapolate linearly from [position|orientation] 1 -> 2.
+  const vec3 position1(0, 0, 0);
+  const vec3 position2(1, 2, 3);
+  const real angle1 = M_PI * 0.3;
+  const real angle2 = M_PI * 0.5;
+  const quat orientation1(Eigen::AngleAxis<real>(angle1, kRotationAxis));
+  const quat orientation2(Eigen::AngleAxis<real>(angle2, kRotationAxis));
+  const int64_t t1_ns = 0;           //< First sample time stamp
+  const int64_t t2_ns = 10;          //< The second sample time stamp
+  const int64_t eval_left_ns = 23;   //< The eval time for left
+  const int64_t eval_right_ns = 31;  //< The eval time for right
+  Pose start_pose, end_pose, extrapolated_pose;
+
+  predictor.Add(Pose{
+      .position = position1, .orientation = orientation1, .time_ns = t1_ns});
+
+  predictor.Add(Pose{
+      .position = position2, .orientation = orientation2, .time_ns = t2_ns});
+
+  // Extrapolate from t1 - t2 to eval_[left/right].
+  extrapolated_pose = predictor.Predict(eval_left_ns);
+
+  // The interpolation factors for left and right.
+  const auto left_t = (eval_left_ns - t1_ns) / static_cast<real>(t2_ns - t1_ns);
+  EXPECT_EQ(2.3, left_t);
+
+  TestPosition(lerp(position1, position2, left_t), extrapolated_pose.position);
+
+  TestOrientation(qlerp(angle1, angle2, left_t), extrapolated_pose.orientation);
+
+  extrapolated_pose = predictor.Predict(eval_right_ns);
+
+  const auto right_t =
+      (eval_right_ns - t1_ns) / static_cast<real>(t2_ns - t1_ns);
+  EXPECT_EQ(3.1, right_t);
+
+  TestPosition(lerp(position1, position2, right_t), extrapolated_pose.position);
+
+  TestOrientation(qlerp(angle1, angle2, right_t),
+                  extrapolated_pose.orientation);
+}
+
+// Test three samples, where the last two samples have the same timestamp.
+TEST(LinearPosePredictorTest, DuplicateSamples) {
+  LinearPosePredictor predictor;
+
+  const vec3 position1(0, 0, 0);
+  const vec3 position2(1, 2, 3);
+  const vec3 position3(2, 2, 3);
+  const real angle1 = M_PI * 0.3;
+  const real angle2 = M_PI * 0.5;
+  const real angle3 = M_PI * 0.65;
+  const quat orientation1(Eigen::AngleAxis<real>(angle1, kRotationAxis));
+  const quat orientation2(Eigen::AngleAxis<real>(angle2, kRotationAxis));
+  const quat orientation3(Eigen::AngleAxis<real>(angle3, kRotationAxis));
+  const int64_t t1_ns = 0;
+  const int64_t t2_ns = 10;
+  const int64_t eval_left_ns = 27;
+  const int64_t eval_right_ns = 31;
+  Pose extrapolated_pose;
+
+  predictor.Add(Pose{
+      .position = position1, .orientation = orientation1, .time_ns = t1_ns});
+
+  predictor.Add(Pose{
+      .position = position2, .orientation = orientation2, .time_ns = t2_ns});
+
+  {
+    // Extrapolate from t1 - t2 to eval_[left/right].
+    extrapolated_pose = predictor.Predict(eval_left_ns);
+
+    // The interpolation factors for left and right.
+    const auto left_t =
+        (eval_left_ns - t1_ns) / static_cast<real>(t2_ns - t1_ns);
+
+    // Test the result.
+    TestPosition(lerp(position1, position2, left_t),
+                 extrapolated_pose.position);
+
+    TestOrientation(qlerp(angle1, angle2, left_t),
+                    extrapolated_pose.orientation);
+
+    extrapolated_pose = predictor.Predict(eval_right_ns);
+
+    const auto right_t =
+        (eval_right_ns - t1_ns) / static_cast<real>(t2_ns - t1_ns);
+
+    TestPosition(lerp(position1, position2, right_t),
+                 extrapolated_pose.position);
+
+    TestOrientation(qlerp(angle1, angle2, right_t),
+                    extrapolated_pose.orientation);
+  }
+
+  // Sending a duplicate sample here.
+  predictor.Add(Pose{
+      .position = position3, .orientation = orientation3, .time_ns = t2_ns});
+
+  {
+    // Extrapolate from t1 - t2 to eval_[left/right].
+    extrapolated_pose = predictor.Predict(eval_left_ns);
+
+    // The interpolation factors for left and right.
+    const auto left_t =
+        (eval_left_ns - t1_ns) / static_cast<real>(t2_ns - t1_ns);
+
+    TestPosition(lerp(position1, position3, left_t),
+                 extrapolated_pose.position);
+
+    TestOrientation(qlerp(angle1, angle3, left_t),
+                    extrapolated_pose.orientation);
+
+    extrapolated_pose = predictor.Predict(eval_right_ns);
+
+    const auto right_t =
+        (eval_right_ns - t1_ns) / static_cast<real>(t2_ns - t1_ns);
+
+    // Test the result.
+
+    TestPosition(lerp(position1, position3, right_t),
+                 extrapolated_pose.position);
+
+    TestOrientation(qlerp(angle1, angle3, right_t),
+                    extrapolated_pose.orientation);
+  }
+}
+
+}  // namespace posepredictor
diff --git a/libs/vr/libposepredictor/polynomial_predictor.cpp b/libs/vr/libposepredictor/polynomial_predictor.cpp
new file mode 100644
index 0000000..98fd28a
--- /dev/null
+++ b/libs/vr/libposepredictor/polynomial_predictor.cpp
@@ -0,0 +1,11 @@
+#include <polynomial_predictor.h>
+
+namespace posepredictor {
+
+// Instantiate the common polynomial types.
+template class PolynomialPosePredictor<1, 2>;
+template class PolynomialPosePredictor<2, 3>;
+template class PolynomialPosePredictor<3, 4>;
+template class PolynomialPosePredictor<4, 5>;
+
+}  // namespace posepredictor
diff --git a/libs/vr/libposepredictor/polynomial_predictor_tests.cpp b/libs/vr/libposepredictor/polynomial_predictor_tests.cpp
new file mode 100644
index 0000000..88cb2b9
--- /dev/null
+++ b/libs/vr/libposepredictor/polynomial_predictor_tests.cpp
@@ -0,0 +1,120 @@
+#include <gtest/gtest.h>
+
+#include <polynomial_predictor.h>
+
+namespace posepredictor {
+
+namespace {
+
+// For comparing expected and actual.
+constexpr real kAbsErrorTolerance = 1e-5;
+
+// Test the linear extrapolation from two samples.
+TEST(PolynomialPosePredictor, Linear) {
+  // Degree = 1, simple line, passing through two points.
+  // Note the regularization is 0 so we expect the exact fit.
+  PolynomialPosePredictor<1, 2> predictor(0);
+
+  // Add two samples.
+  predictor.Add(
+      Pose{.position = {0, 0, 0}, .orientation = {0, 0, 0, 1}, .time_ns = 0});
+
+  predictor.Add(
+      Pose{.position = {1, 2, 3}, .orientation = {0, 0, 0, 1}, .time_ns = 10});
+
+  Pose predicted_pose;
+
+  predicted_pose = predictor.Predict(20);
+
+  // Check the x,y,z components for the expected translation.
+  EXPECT_NEAR(predicted_pose.position[0], 2, kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[1], 4, kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[2], 6, kAbsErrorTolerance);
+
+  predicted_pose = predictor.Predict(30);
+  EXPECT_NEAR(predicted_pose.position[0], 3, kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[1], 6, kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[2], 9, kAbsErrorTolerance);
+}
+
+// Test the degree two polynomial fit.
+TEST(PolynomialPosePredictor, Quadric) {
+  // Degree = 2, need three samples to fit a polynomial.
+  // Note the regularization is 0 so we expect the exact fit.
+  PolynomialPosePredictor<2, 3> predictor(0);
+
+  // Add three samples.
+  predictor.Add(
+      Pose{.position = {1, 2, 3}, .orientation = {0, 0, 0, 1}, .time_ns = 0});
+
+  predictor.Add(
+      Pose{.position = {0, 0, 0}, .orientation = {0, 0, 0, 1}, .time_ns = 10});
+
+  predictor.Add(
+      Pose{.position = {1, 2, 3}, .orientation = {0, 0, 0, 1}, .time_ns = 20});
+
+  // The expected polynomials for x/y/z.
+
+  // x:  0.01 * t^2 - 0.2 * t + 1
+  const auto x = [](auto t) { return 0.01 * t * t - 0.2 * t + 1; };
+
+  // y:  0.02 * t^2 - 0.4 * t + 2
+  const auto y = [](auto t) { return 0.02 * t * t - 0.4 * t + 2; };
+
+  // z:  0.03 * t^2 - 0.6 * t + 3
+  const auto z = [](auto t) { return 0.03 * t * t - 0.6 * t + 3; };
+
+  Pose predicted_pose;
+  predicted_pose = predictor.Predict(40);
+
+  // Check the x,y,z components for the expected translation.
+  EXPECT_NEAR(predicted_pose.position[0], x(40), kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[1], y(40), kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[2], z(40), kAbsErrorTolerance);
+
+  predicted_pose = predictor.Predict(50);
+  EXPECT_NEAR(predicted_pose.position[0], x(50), kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[1], y(50), kAbsErrorTolerance);
+  EXPECT_NEAR(predicted_pose.position[2], z(50), kAbsErrorTolerance);
+}
+
+// Test the degree two polynomial fit with degenerate input.
+//
+// The input samples all lie in a line which would normally make our system
+// degenerate. We will rely on the regularization term to recover the linear
+// solution in a quadric predictor.
+TEST(PolynomialPosePredictor, QuadricDegenate) {
+  // Degree = 2, need three samples to fit a polynomial.
+  // Note that we are using the default regularization term here.
+  // We cannot use 0 regularizer since the input is degenerate.
+  PolynomialPosePredictor<2, 3> predictor(1e-20);
+
+  // Add three samples.
+  predictor.Add(
+      Pose{.position = {0, 0, 0}, .orientation = {0, 0, 0, 1}, .time_ns = 0});
+
+  predictor.Add(
+      Pose{.position = {1, 2, 3}, .orientation = {0, 0, 0, 1}, .time_ns = 10});
+
+  predictor.Add(
+      Pose{.position = {2, 4, 6}, .orientation = {0, 0, 0, 1}, .time_ns = 20});
+
+  Pose predicted_pose;
+
+  predicted_pose = predictor.Predict(30);
+
+  // Check the x,y,z components for the expected translation.
+  // We are using a higher error threshold since this is now approximate.
+  EXPECT_NEAR(predicted_pose.position[0], 3, 0.001);
+  EXPECT_NEAR(predicted_pose.position[1], 6, 0.001);
+  EXPECT_NEAR(predicted_pose.position[2], 9, 0.001);
+
+  predicted_pose = predictor.Predict(40);
+  EXPECT_NEAR(predicted_pose.position[0], 4, 0.001);
+  EXPECT_NEAR(predicted_pose.position[1], 8, 0.001);
+  EXPECT_NEAR(predicted_pose.position[2], 12, 0.001);
+}
+
+}  // namespace
+
+}  // namespace posepredictor
diff --git a/libs/vr/libposepredictor/predictor.cpp b/libs/vr/libposepredictor/predictor.cpp
new file mode 100644
index 0000000..266e7ef
--- /dev/null
+++ b/libs/vr/libposepredictor/predictor.cpp
@@ -0,0 +1,34 @@
+#include <linear_predictor.h>
+#include <polynomial_predictor.h>
+#include <predictor.h>
+
+namespace posepredictor {
+
+vec3 Predictor::AngularVelocity(const quat& a, const quat& b, real delta_time) {
+  const auto delta_q = b.inverse() * a;
+  // Check that delta_q.w() == 1, Eigen doesn't respect this convention. If
+  // delta_q.w() == -1, we'll get the opposite velocity.
+  return 2.0 * (delta_q.w() < 0 ? -delta_q.vec() : delta_q.vec()) / delta_time;
+}
+
+Velocity Predictor::PredictVelocity(int64_t time_ns) const {
+  const auto a = Predict(time_ns - kFiniteDifferenceNs);
+  const auto b = Predict(time_ns + kFiniteDifferenceNs);
+  const auto delta_time = NsToSeconds(2 * kFiniteDifferenceNs);
+
+  return {(b.position - a.position) / delta_time,
+          AngularVelocity(a.orientation, b.orientation, delta_time)};
+}
+
+// The factory method.
+std::unique_ptr<Predictor> Predictor::Create(PredictorType type) {
+  switch (type) {
+    case PredictorType::Linear:
+      return std::make_unique<LinearPosePredictor>();
+    case PredictorType::Quadric:
+      return std::make_unique<QuadricPosePredictor>();
+    case PredictorType::Cubic:
+      return std::make_unique<CubicPosePredictor>();
+  }
+}
+}  // namespace posepredictor
diff --git a/libs/vr/libposepredictor/predictor_tests.cpp b/libs/vr/libposepredictor/predictor_tests.cpp
new file mode 100644
index 0000000..e84a93a
--- /dev/null
+++ b/libs/vr/libposepredictor/predictor_tests.cpp
@@ -0,0 +1,50 @@
+#include <gtest/gtest.h>
+
+#include <predictor.h>
+
+namespace posepredictor {
+
+namespace {
+
+// For comparing expected and actual.
+constexpr real kAbsErrorTolerance = 1e-4;
+
+// Test the angular velocity computation from two orientations.
+TEST(PosePredictor, AngularVelocity) {
+  // Some random rotation axis we will rotate around.
+  const vec3 kRotationAxis = vec3(1, 2, 3).normalized();
+
+  // Some random angle we will be rotating by.
+  const real kRotationAngle = M_PI / 30;
+
+  // Random start orientation we are currently at.
+  const quat kStartOrientation = quat(5, 3, 4, 1).normalized();
+
+  // The orientation we will end up at.
+  const quat kEndOrientation =
+      kStartOrientation *
+      quat(Eigen::AngleAxis<real>(kRotationAngle, kRotationAxis));
+
+  // The delta time for going from start orientation to end.
+  const real kDeltaTime = 1.0;
+
+  // Compute the angular velocity from start orientation to end.
+  const auto angularVelocity = Predictor::AngularVelocity(
+      kStartOrientation, kEndOrientation, kDeltaTime);
+
+  // Extract the axis and the angular speed.
+  const auto angularSpeed = angularVelocity.norm();
+  const auto rotationAxis = angularVelocity.normalized();
+
+  // The speed must match.
+  EXPECT_NEAR(angularSpeed, kRotationAngle / kDeltaTime, kAbsErrorTolerance);
+
+  // The rotation axis must match.
+  EXPECT_NEAR(rotationAxis[0], kRotationAxis[0], kAbsErrorTolerance);
+  EXPECT_NEAR(rotationAxis[1], kRotationAxis[1], kAbsErrorTolerance);
+  EXPECT_NEAR(rotationAxis[2], kRotationAxis[2], kAbsErrorTolerance);
+}
+
+}  // namespace
+
+}  // namespace posepredictor
diff --git a/libs/vr/libsensor/Android.mk b/libs/vr/libsensor/Android.mk
index 8c7ad43..89abcb0 100644
--- a/libs/vr/libsensor/Android.mk
+++ b/libs/vr/libsensor/Android.mk
@@ -32,6 +32,7 @@
 	libhardware \
 	liblog \
 	libutils \
+	libandroid \
 
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(sourceFiles)
diff --git a/libs/vr/libsensor/tests/sensor_app_tests.cpp b/libs/vr/libsensor/tests/sensor_app_tests.cpp
index 0f5bf00..64c9864 100644
--- a/libs/vr/libsensor/tests/sensor_app_tests.cpp
+++ b/libs/vr/libsensor/tests/sensor_app_tests.cpp
@@ -1,6 +1,7 @@
 #include <EGL/egl.h>
 #include <GLES2/gl2.h>
 #include <math.h>
+#include <inttypes.h>
 
 #include <dvr/graphics.h>
 #include <dvr/pose_client.h>
diff --git a/libs/vr/libvrflinger/Android.mk b/libs/vr/libvrflinger/Android.mk
index 1706f30..3450788 100644
--- a/libs/vr/libvrflinger/Android.mk
+++ b/libs/vr/libvrflinger/Android.mk
@@ -56,6 +56,7 @@
 	libcutils \
 	liblog \
 	libhardware \
+	libnativewindow \
 	libutils \
 	libEGL \
 	libGLESv1_CM \
diff --git a/libs/vr/libvrflinger/display_service.cpp b/libs/vr/libvrflinger/display_service.cpp
index 5309acf..bb70c5c 100644
--- a/libs/vr/libvrflinger/display_service.cpp
+++ b/libs/vr/libvrflinger/display_service.cpp
@@ -25,7 +25,13 @@
 
 DisplayService::DisplayService(Hwc2::Composer* hidl)
     : BASE("DisplayService", Endpoint::Create(DisplayRPC::kClientPath)),
-      hardware_composer_(hidl) {}
+      hardware_composer_(hidl) {
+  hardware_composer_.Initialize();
+}
+
+bool DisplayService::IsInitialized() const {
+  return BASE::IsInitialized() && hardware_composer_.IsInitialized();
+}
 
 std::string DisplayService::DumpState(size_t max_length) {
   std::vector<char> buffer(max_length);
diff --git a/libs/vr/libvrflinger/display_service.h b/libs/vr/libvrflinger/display_service.h
index 5de4f1d..b207e4d 100644
--- a/libs/vr/libvrflinger/display_service.h
+++ b/libs/vr/libvrflinger/display_service.h
@@ -23,6 +23,7 @@
 // DisplayService implements the displayd display service over ServiceFS.
 class DisplayService : public pdx::ServiceBase<DisplayService> {
  public:
+  bool IsInitialized() const override;
   std::string DumpState(size_t max_length) override;
 
   void OnChannelClose(pdx::Message& message,
diff --git a/libs/vr/libvrflinger/hardware_composer.cpp b/libs/vr/libvrflinger/hardware_composer.cpp
index e6ed665..f801d9b 100644
--- a/libs/vr/libvrflinger/hardware_composer.cpp
+++ b/libs/vr/libvrflinger/hardware_composer.cpp
@@ -100,7 +100,8 @@
 }
 
 HardwareComposer::HardwareComposer(Hwc2::Composer* hwc2_hidl)
-    : hwc2_hidl_(hwc2_hidl),
+    : initialized_(false),
+      hwc2_hidl_(hwc2_hidl),
       display_transform_(HWC_TRANSFORM_NONE),
       display_surfaces_updated_(false),
       hardware_layers_need_update_(false),
@@ -126,6 +127,51 @@
   Suspend();
 }
 
+bool HardwareComposer::Initialize() {
+  if (initialized_) {
+    ALOGE("HardwareComposer::Initialize: already initialized.");
+    return false;
+  }
+
+  int32_t ret = HWC2_ERROR_NONE;
+
+  Hwc2::Config config;
+  ret = (int32_t)hwc2_hidl_->getActiveConfig(HWC_DISPLAY_PRIMARY, &config);
+
+  if (ret != HWC2_ERROR_NONE) {
+    ALOGE("HardwareComposer: Failed to get current display config : %d",
+          config);
+    return false;
+  }
+
+  ret =
+      GetDisplayMetrics(HWC_DISPLAY_PRIMARY, config, &native_display_metrics_);
+
+  if (ret != HWC2_ERROR_NONE) {
+    ALOGE(
+        "HardwareComposer: Failed to get display attributes for current "
+        "configuration : %d",
+        ret);
+    return false;
+  }
+
+  ALOGI(
+      "HardwareComposer: primary display attributes: width=%d height=%d "
+      "vsync_period_ns=%d DPI=%dx%d",
+      native_display_metrics_.width, native_display_metrics_.height,
+      native_display_metrics_.vsync_period_ns, native_display_metrics_.dpi.x,
+      native_display_metrics_.dpi.y);
+
+  // Set the display metrics but never use rotation to avoid the long latency of
+  // rotation processing in hwc.
+  display_transform_ = HWC_TRANSFORM_NONE;
+  display_metrics_ = native_display_metrics_;
+
+  initialized_ = true;
+
+  return initialized_;
+}
+
 bool HardwareComposer::Resume() {
   std::lock_guard<std::mutex> post_thread_lock(post_thread_state_mutex_);
   if (post_thread_state_ == PostThreadState::kRunning) {
@@ -136,62 +182,6 @@
 
   int32_t ret = HWC2_ERROR_NONE;
 
-  static const uint32_t attributes[] = {
-      HWC_DISPLAY_WIDTH, HWC_DISPLAY_HEIGHT, HWC_DISPLAY_VSYNC_PERIOD,
-      HWC_DISPLAY_DPI_X, HWC_DISPLAY_DPI_Y,  HWC_DISPLAY_NO_ATTRIBUTE,
-  };
-
-  std::vector<Hwc2::Config> configs;
-  ret = (int32_t)hwc2_hidl_->getDisplayConfigs(HWC_DISPLAY_PRIMARY, &configs);
-
-  if (ret != HWC2_ERROR_NONE) {
-    ALOGE("HardwareComposer: Failed to get display configs");
-    return false;
-  }
-
-  uint32_t num_configs = configs.size();
-
-  for (size_t i = 0; i < num_configs; i++) {
-    ALOGI("HardwareComposer: cfg[%zd/%zd] = 0x%08x", i, num_configs,
-          configs[i]);
-
-    ret = GetDisplayMetrics(HWC_DISPLAY_PRIMARY, configs[i],
-                            &native_display_metrics_);
-
-    if (ret != HWC2_ERROR_NONE) {
-      ALOGE("HardwareComposer: Failed to get display attributes %d", ret);
-      continue;
-    } else {
-      ret =
-          (int32_t)hwc2_hidl_->setActiveConfig(HWC_DISPLAY_PRIMARY, configs[i]);
-
-      if (ret != HWC2_ERROR_NONE) {
-        ALOGE("HardwareComposer: Failed to set display configuration; ret=%d",
-              ret);
-        continue;
-      }
-
-      break;
-    }
-  }
-
-  if (ret != HWC2_ERROR_NONE) {
-    ALOGE("HardwareComposer: Could not set a valid display configuration.");
-    return false;
-  }
-
-  // Set the display metrics but never use rotation to avoid the long latency of
-  // rotation processing in hwc.
-  display_transform_ = HWC_TRANSFORM_NONE;
-  display_metrics_ = native_display_metrics_;
-
-  ALOGI(
-      "HardwareComposer: primary display attributes: width=%d height=%d "
-      "vsync_period_ns=%d DPI=%dx%d",
-      native_display_metrics_.width, native_display_metrics_.height,
-      native_display_metrics_.vsync_period_ns, native_display_metrics_.dpi.x,
-      native_display_metrics_.dpi.y);
-
   // Always turn off vsync when we start.
   EnableVsync(false);
 
diff --git a/libs/vr/libvrflinger/hardware_composer.h b/libs/vr/libvrflinger/hardware_composer.h
index b6aa807..e2a8b90 100644
--- a/libs/vr/libvrflinger/hardware_composer.h
+++ b/libs/vr/libvrflinger/hardware_composer.h
@@ -189,6 +189,10 @@
   HardwareComposer(Hwc2::Composer* hidl);
   ~HardwareComposer();
 
+  bool Initialize();
+
+  bool IsInitialized() const { return initialized_; }
+
   bool Suspend();
   bool Resume();
 
@@ -303,6 +307,8 @@
 
   void HandlePendingScreenshots();
 
+  bool initialized_;
+
   // Hardware composer HAL device.
   std::unique_ptr<Hwc2::Composer> hwc2_hidl_;
   sp<ComposerCallback> callbacks_;
diff --git a/opengl/include/EGL/eglext.h b/opengl/include/EGL/eglext.h
index df84c93..0ac74db 100644
--- a/opengl/include/EGL/eglext.h
+++ b/opengl/include/EGL/eglext.h
@@ -650,7 +650,7 @@
 #define EGL_COMPOSITION_LATCH_TIME_ANDROID 0x3153
 #define EGL_FIRST_COMPOSITION_START_TIME_ANDROID 0x3154
 #define EGL_LAST_COMPOSITION_START_TIME_ANDROID 0x3155
-#define EGL_FIRST_COMPOSITION_FINISHED_TIME_ANDROID 0x3156
+#define EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID 0x3156
 #define EGL_DISPLAY_PRESENT_TIME_ANDROID 0x3157
 #define EGL_DISPLAY_RETIRE_TIME_ANDROID 0x3158
 #define EGL_DEQUEUE_READY_TIME_ANDROID 0x3159
diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
index 48bf676..04f6d6d 100644
--- a/opengl/libagl/egl.cpp
+++ b/opengl/libagl/egl.cpp
@@ -33,6 +33,7 @@
 #include <ui/ANativeObjectBase.h>
 #include <ui/Fence.h>
 #include <ui/GraphicBufferMapper.h>
+#include <ui/Rect.h>
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index 865313c..4fa6a33 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -80,6 +80,7 @@
         "libbinder",
         "libutils",
         "libui",
+        "libnativewindow",
     ],
 }
 
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index ef3d7a3..c434d0e 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -28,6 +28,8 @@
 #include <EGL/eglext.h>
 
 #include <android/hardware_buffer.h>
+#include <private/android/AHardwareBufferHelpers.h>
+
 #include <cutils/atomic.h>
 #include <cutils/compiler.h>
 #include <cutils/memory.h>
@@ -38,8 +40,8 @@
 
 #include <ui/GraphicBuffer.h>
 
+
 #include <utils/KeyedVector.h>
-#include <utils/SortedVector.h>
 #include <utils/String8.h>
 #include <utils/Trace.h>
 
@@ -81,6 +83,11 @@
  *
  * NOTE: Both strings MUST have a single space as the last character.
  */
+
+// CLion mistakenly warns about the extern keyword below.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wextern-initializer"
+
 extern char const * const gBuiltinExtensionString =
         "EGL_KHR_get_all_proc_addresses "
         "EGL_ANDROID_presentation_time "
@@ -230,6 +237,8 @@
             (__eglMustCastToProperFunctionPointerType)&eglGetFrameTimestampSupportedANDROID },
 };
 
+#pragma clang diagnostic pop
+
 /*
  * These extensions entry-points should not be exposed to applications.
  * They're used internally by the Android EGL layer.
@@ -301,7 +310,7 @@
     clearError();
 
     egl_display_ptr dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 
     EGLBoolean res = dp->initialize(major, minor);
 
@@ -317,7 +326,7 @@
     clearError();
 
     egl_display_ptr dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 
     EGLBoolean res = dp->terminate();
 
@@ -338,7 +347,7 @@
     if (!dp) return EGL_FALSE;
 
     if (num_config==0) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     EGLBoolean res = EGL_FALSE;
@@ -363,7 +372,7 @@
     if (!dp) return EGL_FALSE;
 
     if (num_config==0) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     EGLBoolean res = EGL_FALSE;
@@ -395,6 +404,8 @@
                         case EGL_CONFIG_CAVEAT:
                             attribCaveat = &attrib_list[attribCount];
                             break;
+                        default:
+                            break;
                     }
                     attribCount++;
                 }
@@ -490,14 +501,8 @@
         cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_COLOR_COMPONENT_TYPE_EXT,
                                     &componentType);
 
-        // by default, just pick appropriate RGBA
-        EGLint format = HAL_PIXEL_FORMAT_RGBA_8888;
-        if (dp->haveExtension("EGL_EXT_pixel_format_float") &&
-            (componentType == EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT)) {
-            format = HAL_PIXEL_FORMAT_RGBA_FP16;
-        }
+        EGLint format;
         android_dataspace dataSpace = HAL_DATASPACE_UNKNOWN;
-
         EGLint a = 0;
         EGLint r, g, b;
         r = g = b = 0;
@@ -630,7 +635,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t * const s = get_surface(surface);
     EGLBoolean result = s->cnx->egl.eglDestroySurface(dp->disp.dpy, s->surface);
@@ -650,7 +655,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     return s->cnx->egl.eglQuerySurface(
@@ -669,7 +674,6 @@
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
         setError(EGL_BAD_SURFACE, EGL_FALSE);
-        return;
     }
 }
 
@@ -728,7 +732,7 @@
 
     ContextRef _c(dp.get(), ctx);
     if (!_c.get())
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     egl_context_t * const c = get_context(ctx);
     EGLBoolean result = c->cnx->egl.eglDestroyContext(dp->disp.dpy, c->context);
@@ -744,14 +748,14 @@
     clearError();
 
     egl_display_ptr dp = validate_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    if (!dp) return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 
     // If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
     // EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
     // a valid but uninitialized display.
     if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
          (draw != EGL_NO_SURFACE) ) {
-        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 
     // get a reference to the object passed in
@@ -762,7 +766,7 @@
     // validate the context (if not EGL_NO_CONTEXT)
     if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
         // EGL_NO_CONTEXT is valid
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
     }
 
     // these are the underlying implementation's object
@@ -785,7 +789,7 @@
         // no context given, use the implementation of the current context
         if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
             // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
-            return setError(EGL_BAD_MATCH, EGL_FALSE);
+            return setError(EGL_BAD_MATCH, (EGLBoolean)EGL_FALSE);
         }
         if (cur_c == NULL) {
             // no current context
@@ -796,14 +800,14 @@
 
     // retrieve the underlying implementation's draw EGLSurface
     if (draw != EGL_NO_SURFACE) {
-        if (!_d.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        if (!_d.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
         d = get_surface(draw);
         impl_draw = d->surface;
     }
 
     // retrieve the underlying implementation's read EGLSurface
     if (read != EGL_NO_SURFACE) {
-        if (!_r.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        if (!_r.get()) return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
         r = get_surface(read);
         impl_read = r->surface;
     }
@@ -827,7 +831,7 @@
     } else {
         // this will ALOGE the error
         egl_connection_t* const cnx = &gEGLImpl;
-        result = setError(cnx->egl.eglGetError(), EGL_FALSE);
+        result = setError(cnx->egl.eglGetError(), (EGLBoolean)EGL_FALSE);
     }
     return result;
 }
@@ -842,7 +846,7 @@
     if (!dp) return EGL_FALSE;
 
     ContextRef _c(dp.get(), ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+    if (!_c.get()) return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     egl_context_t * const c = get_context(ctx);
     return c->cnx->egl.eglQueryContext(
@@ -903,7 +907,7 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     return cnx->egl.eglWaitGL();
 }
@@ -914,7 +918,7 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     return cnx->egl.eglWaitNative(engine);
 }
@@ -1042,7 +1046,7 @@
             thread->mQueue.push_back(sync);
             thread->mCondition.signal();
             thread->mFramesQueued++;
-            ATRACE_INT("GPU Frames Outstanding", thread->mQueue.size());
+            ATRACE_INT("GPU Frames Outstanding", int32_t(thread->mQueue.size()));
         }
     }
 
@@ -1076,7 +1080,7 @@
             Mutex::Autolock lock(mMutex);
             mQueue.removeAt(0);
             mFramesCompleted++;
-            ATRACE_INT("GPU Frames Outstanding", mQueue.size());
+            ATRACE_INT("GPU Frames Outstanding", int32_t(mQueue.size()));
         }
         return true;
     }
@@ -1099,7 +1103,7 @@
 
     SurfaceRef _s(dp.get(), draw);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(draw);
 
@@ -1164,7 +1168,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     return s->cnx->egl.eglCopyBuffers(dp->disp.dpy, s->surface, target);
@@ -1182,7 +1186,7 @@
     // 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, nullptr);
+        return setErrorQuiet(EGL_BAD_DISPLAY, (const char*)0);
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) return (const char *) NULL;
@@ -1196,6 +1200,8 @@
             return dp->getExtensionString();
         case EGL_CLIENT_APIS:
             return dp->getClientApiString();
+        default:
+            break;
     }
     return setError(EGL_BAD_PARAMETER, (const char *)0);
 }
@@ -1216,6 +1222,8 @@
             return dp->disp.queryString.extensions;
         case EGL_CLIENT_APIS:
             return dp->disp.queryString.clientApi;
+        default:
+            break;
     }
     return setError(EGL_BAD_PARAMETER, (const char *)0);
 }
@@ -1234,7 +1242,7 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t * const s = get_surface(surface);
 
@@ -1242,27 +1250,23 @@
         if (!s->win.get()) {
             setError(EGL_BAD_SURFACE, EGL_FALSE);
         }
-        int err = native_window_set_auto_refresh(s->win.get(),
-            value ? true : false);
-        return (err == NO_ERROR) ? EGL_TRUE :
-            setError(EGL_BAD_SURFACE, EGL_FALSE);
+        int err = native_window_set_auto_refresh(s->win.get(), value ? true : false);
+        return (err == NO_ERROR) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     if (attribute == EGL_TIMESTAMPS_ANDROID) {
         if (!s->win.get()) {
-            return setError(EGL_BAD_SURFACE, EGL_FALSE);
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
         }
-        int err = native_window_enable_frame_timestamps(
-                s->win.get(), value ? true : false);
-        return (err == NO_ERROR) ? EGL_TRUE :
-            setError(EGL_BAD_SURFACE, EGL_FALSE);
+        int err = native_window_enable_frame_timestamps(s->win.get(), value ? true : false);
+        return (err == NO_ERROR) ? EGL_TRUE : setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     if (s->cnx->egl.eglSurfaceAttrib) {
         return s->cnx->egl.eglSurfaceAttrib(
                 dp->disp.dpy, s->surface, attribute, value);
     }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglBindTexImage(
@@ -1275,14 +1279,14 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglBindTexImage) {
         return s->cnx->egl.eglBindTexImage(
                 dp->disp.dpy, s->surface, buffer);
     }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglReleaseTexImage(
@@ -1295,14 +1299,14 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglReleaseTexImage) {
         return s->cnx->egl.eglReleaseTexImage(
                 dp->disp.dpy, s->surface, buffer);
     }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
+    return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
@@ -1332,7 +1336,7 @@
 
     egl_connection_t* const cnx = &gEGLImpl;
     if (!cnx->dso)
-        return setError(EGL_BAD_CONTEXT, EGL_FALSE);
+        return setError(EGL_BAD_CONTEXT, (EGLBoolean)EGL_FALSE);
 
     EGLBoolean res;
     if (cnx->egl.eglWaitClient) {
@@ -1348,7 +1352,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     // bind this API on all EGLs
@@ -1365,7 +1369,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
     }
 
     egl_connection_t* const cnx = &gEGLImpl;
@@ -1423,14 +1427,14 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglLockSurfaceKHR) {
         return s->cnx->egl.eglLockSurfaceKHR(
                 dp->disp.dpy, s->surface, attrib_list);
     }
-    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 }
 
 EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
@@ -1442,13 +1446,13 @@
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get())
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
 
     egl_surface_t const * const s = get_surface(surface);
     if (s->cnx->egl.eglUnlockSurfaceKHR) {
         return s->cnx->egl.eglUnlockSurfaceKHR(dp->disp.dpy, s->surface);
     }
-    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+    return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
 }
 
 EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
@@ -1546,7 +1550,7 @@
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) return EGL_FALSE;
 
-    EGLBoolean result = EGL_FALSE;
+    EGLint result = EGL_FALSE;
     egl_connection_t* const cnx = &gEGLImpl;
     if (cnx->dso && cnx->egl.eglClientWaitSyncKHR) {
         result = cnx->egl.eglClientWaitSyncKHR(
@@ -1991,9 +1995,7 @@
 
     if (!buffer) return setError(EGL_BAD_PARAMETER, (EGLClientBuffer)0);
 
-    // FIXME: remove this dangerous reinterpret_cast.
-    const GraphicBuffer* graphicBuffer =
-            reinterpret_cast<const GraphicBuffer*>(buffer);
+    const GraphicBuffer* graphicBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
     return static_cast<EGLClientBuffer>(graphicBuffer->getNativeBuffer());
 }
 
@@ -2005,7 +2007,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLuint64NV)EGL_FALSE);
     }
 
     EGLuint64NV ret = 0;
@@ -2015,7 +2017,7 @@
         return cnx->egl.eglGetSystemTimeFrequencyNV();
     }
 
-    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
+    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
 }
 
 EGLuint64NV eglGetSystemTimeNV()
@@ -2023,7 +2025,7 @@
     clearError();
 
     if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+        return setError(EGL_BAD_PARAMETER, (EGLuint64NV)EGL_FALSE);
     }
 
     EGLuint64NV ret = 0;
@@ -2033,7 +2035,7 @@
         return cnx->egl.eglGetSystemTimeNV();
     }
 
-    return setErrorQuiet(EGL_BAD_DISPLAY, 0);
+    return setErrorQuiet(EGL_BAD_DISPLAY, (EGLuint64NV)0);
 }
 
 // ----------------------------------------------------------------------------
@@ -2071,18 +2073,18 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     if (!s->win.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     uint64_t nextFrameId = 0;
@@ -2092,7 +2094,7 @@
         // This should not happen. Return an error that is not in the spec
         // so it's obvious something is very wrong.
         ALOGE("eglGetNextFrameId: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 
     *frameId = nextFrameId;
@@ -2106,18 +2108,18 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     if (!s->win.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     nsecs_t* compositeDeadline = nullptr;
@@ -2136,7 +2138,7 @@
                 compositeToPresentLatency = &values[i];
                 break;
             default:
-                return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
         }
     }
 
@@ -2147,12 +2149,12 @@
       case NO_ERROR:
         return EGL_TRUE;
       case INVALID_OPERATION:
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
       default:
         // This should not happen. Return an error that is not in the spec
         // so it's obvious something is very wrong.
         ALOGE("eglGetCompositorTiming: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 }
 
@@ -2163,19 +2165,19 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     ANativeWindow* window = s->win.get();
     if (!window) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     switch (name) {
@@ -2196,25 +2198,25 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     if (!s->win.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     nsecs_t* requestedPresentTime = nullptr;
     nsecs_t* acquireTime = nullptr;
     nsecs_t* latchTime = nullptr;
     nsecs_t* firstRefreshStartTime = nullptr;
-    nsecs_t* GLCompositionDoneTime = nullptr;
+    nsecs_t* gpuCompositionDoneTime = nullptr;
     nsecs_t* lastRefreshStartTime = nullptr;
     nsecs_t* displayPresentTime = nullptr;
     nsecs_t* displayRetireTime = nullptr;
@@ -2238,8 +2240,8 @@
             case EGL_LAST_COMPOSITION_START_TIME_ANDROID:
                 lastRefreshStartTime = &values[i];
                 break;
-            case EGL_FIRST_COMPOSITION_FINISHED_TIME_ANDROID:
-                GLCompositionDoneTime = &values[i];
+            case EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID:
+                gpuCompositionDoneTime = &values[i];
                 break;
             case EGL_DISPLAY_PRESENT_TIME_ANDROID:
                 displayPresentTime = &values[i];
@@ -2254,29 +2256,29 @@
                 releaseTime = &values[i];
                 break;
             default:
-                return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+                return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
         }
     }
 
     status_t ret = native_window_get_frame_timestamps(s->win.get(), frameId,
             requestedPresentTime, acquireTime, latchTime, firstRefreshStartTime,
-            lastRefreshStartTime, GLCompositionDoneTime, displayPresentTime,
+            lastRefreshStartTime, gpuCompositionDoneTime, displayPresentTime,
             displayRetireTime, dequeueReadyTime, releaseTime);
 
     switch (ret) {
-      case NO_ERROR:
-        return EGL_TRUE;
-      case NAME_NOT_FOUND:
-        return setError(EGL_BAD_ACCESS, EGL_FALSE);
-      case INVALID_OPERATION:
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
-      case BAD_VALUE:
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-      default:
-        // This should not happen. Return an error that is not in the spec
-        // so it's obvious something is very wrong.
-        ALOGE("eglGetFrameTimestamps: Unexpected error.");
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        case NO_ERROR:
+            return EGL_TRUE;
+        case NAME_NOT_FOUND:
+            return setError(EGL_BAD_ACCESS, (EGLBoolean)EGL_FALSE);
+        case INVALID_OPERATION:
+            return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
+        case BAD_VALUE:
+            return setError(EGL_BAD_PARAMETER, (EGLBoolean)EGL_FALSE);
+        default:
+            // This should not happen. Return an error that is not in the spec
+            // so it's obvious something is very wrong.
+            ALOGE("eglGetFrameTimestamps: Unexpected error.");
+            return setError(EGL_NOT_INITIALIZED, (EGLBoolean)EGL_FALSE);
     }
 }
 
@@ -2287,19 +2289,19 @@
 
     const egl_display_ptr dp = validate_display(dpy);
     if (!dp) {
-        return setError(EGL_BAD_DISPLAY, EGL_FALSE);
+        return setError(EGL_BAD_DISPLAY, (EGLBoolean)EGL_FALSE);
     }
 
     SurfaceRef _s(dp.get(), surface);
     if (!_s.get()) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     egl_surface_t const * const s = get_surface(surface);
 
     ANativeWindow* window = s->win.get();
     if (!window) {
-        return setError(EGL_BAD_SURFACE, EGL_FALSE);
+        return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
     }
 
     switch (timestamp) {
@@ -2311,20 +2313,18 @@
         case EGL_COMPOSITION_LATCH_TIME_ANDROID:
         case EGL_FIRST_COMPOSITION_START_TIME_ANDROID:
         case EGL_LAST_COMPOSITION_START_TIME_ANDROID:
-        case EGL_FIRST_COMPOSITION_FINISHED_TIME_ANDROID:
+        case EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID:
         case EGL_DEQUEUE_READY_TIME_ANDROID:
         case EGL_READS_DONE_TIME_ANDROID:
             return EGL_TRUE;
         case EGL_DISPLAY_PRESENT_TIME_ANDROID: {
             int value = 0;
-            window->query(window,
-                    NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT, &value);
+            window->query(window, NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_PRESENT, &value);
             return value == 0 ? EGL_FALSE : EGL_TRUE;
         }
         case EGL_DISPLAY_RETIRE_TIME_ANDROID: {
             int value = 0;
-            window->query(window,
-                    NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_RETIRE, &value);
+            window->query(window, NATIVE_WINDOW_FRAME_TIMESTAMPS_SUPPORTS_RETIRE, &value);
             return value == 0 ? EGL_FALSE : EGL_TRUE;
         }
         default:
diff --git a/opengl/specs/EGL_ANDROID_get_frame_timestamps.txt b/opengl/specs/EGL_ANDROID_get_frame_timestamps.txt
index d0ed8e1..e32d9e6 100644
--- a/opengl/specs/EGL_ANDROID_get_frame_timestamps.txt
+++ b/opengl/specs/EGL_ANDROID_get_frame_timestamps.txt
@@ -90,7 +90,7 @@
     EGL_COMPOSITION_LATCH_TIME_ANDROID 0x3153
     EGL_FIRST_COMPOSITION_START_TIME_ANDROID 0x3154
     EGL_LAST_COMPOSITION_START_TIME_ANDROID 0x3155
-    EGL_FIRST_COMPOSITION_FINISHED_TIME_ANDROID 0x3156
+    EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID 0x3156
     EGL_DISPLAY_PRESENT_TIME_ANDROID 0x3157
     EGL_DISPLAY_RETIRE_TIME_ANDROID 0x3158
     EGL_DEQUEUE_READY_TIME_ANDROID 0x3159
@@ -189,10 +189,10 @@
           that indicates the subsequent frame was not submitted in time to be
           latched by the compositor. Note: The value may not be updated for
           every display refresh if the compositor becomes idle.
-        - EGL_FIRST_COMPOSITION_FINISHED_TIME_ANDROID - The time at which the
-          compositor's rendering work for this frame finished. This will be zero
-          if composition was handled by the display and the compositor didn't do
-          any rendering.
+        - EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID - The time at which
+          the compositor's rendering work for this frame finished. This will be
+          zero if composition was handled by the display and the compositor
+          didn't do any rendering.
         - EGL_DISPLAY_PRESENT_TIME_ANDROID - The time at which this frame
           started to scan out to the physical display.
         - EGL_DISPLAY_RETIRE_TIME_ANDROID - The time at which this frame was
diff --git a/opengl/specs/EGL_ANDROID_get_native_client_buffer.txt b/opengl/specs/EGL_ANDROID_get_native_client_buffer.txt
index de012a0..772b21a 100644
--- a/opengl/specs/EGL_ANDROID_get_native_client_buffer.txt
+++ b/opengl/specs/EGL_ANDROID_get_native_client_buffer.txt
@@ -61,7 +61,7 @@
 
    "The command
 
-        EGLClientBuffer eglGeteNativeClientBufferANDROID(
+        EGLClientBuffer eglGetNativeClientBufferANDROID(
                                 AHardwareBuffer *buffer)
 
     may be used to create an EGLClientBuffer from an AHardwareBuffer object.
@@ -73,7 +73,7 @@
 
     Errors
 
-        If eglGeteNativeClientBufferANDROID fails, NULL will be returned, no
+        If eglGetNativeClientBufferANDROID fails, NULL will be returned, no
         memory will be allocated, and the following error will be generated:
 
        * If the value of buffer is NULL, the error EGL_BAD_PARAMETER is
@@ -92,5 +92,8 @@
 
 Revision History
 
+#2 (Craig Donner, February 17, 2017)
+    - Fix typographical errors.
+
 #1 (Craig Donner, January 27, 2017)
     - Initial draft.
diff --git a/opengl/specs/README b/opengl/specs/README
index 0c49023..a7a9785 100644
--- a/opengl/specs/README
+++ b/opengl/specs/README
@@ -28,7 +28,7 @@
 0x3153               EGL_COMPOSITION_LATCH_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3154               EGL_FIRST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3155               EGL_LAST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3156               EGL_FIRST_COMPOSITION_FINISHED_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3156               EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3157               EGL_DISPLAY_PRESENT_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3158               EGL_DISPLAY_RETIRE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3159               EGL_DEQUEUE_READY_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
diff --git a/opengl/tests/EGLTest/EGL_test.cpp b/opengl/tests/EGLTest/EGL_test.cpp
index 1cd40b3..1b3086b 100644
--- a/opengl/tests/EGLTest/EGL_test.cpp
+++ b/opengl/tests/EGLTest/EGL_test.cpp
@@ -106,9 +106,9 @@
     EXPECT_TRUE(eglChooseConfig(mEglDisplay, attrs, &config, 1, &numConfigs));
 
     struct DummyConsumer : public BnConsumerListener {
-        virtual void onFrameAvailable(const BufferItem& /* item */) {}
-        virtual void onBuffersReleased() {}
-        virtual void onSidebandStreamChanged() {}
+        void onFrameAvailable(const BufferItem& /* item */) override {}
+        void onBuffersReleased() override {}
+        void onSidebandStreamChanged() override {}
     };
 
     // Create a EGLSurface
diff --git a/opengl/tests/hwc/Android.mk b/opengl/tests/hwc/Android.mk
index 693fba4..13337c2 100644
--- a/opengl/tests/hwc/Android.mk
+++ b/opengl/tests/hwc/Android.mk
@@ -25,6 +25,8 @@
 LOCAL_C_INCLUDES += system/extras/tests/include \
     $(call include-path-for, opengl-tests-includes) \
 
+LOCAL_STATIC_LIBRARIES := libarect
+
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
diff --git a/opengl/tests/lib/Android.mk b/opengl/tests/lib/Android.mk
index 4407e7b..0f1c925 100644
--- a/opengl/tests/lib/Android.mk
+++ b/opengl/tests/lib/Android.mk
@@ -24,4 +24,6 @@
 
 LOCAL_CFLAGS := -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES -Wall -Wextra -Werror
 
+LOCAL_STATIC_LIBRARIES := libarect
+
 include $(BUILD_STATIC_LIBRARY)
diff --git a/opengl/tools/glgen/stubs/gles11/common.cpp b/opengl/tools/glgen/stubs/gles11/common.cpp
index 18ec5e3..7062c57 100644
--- a/opengl/tools/glgen/stubs/gles11/common.cpp
+++ b/opengl/tools/glgen/stubs/gles11/common.cpp
@@ -246,6 +246,19 @@
  */
 static int getNeededCount(GLint pname) {
     int needed = 1;
+#ifdef GL_ES_VERSION_3_0
+    // GLES 3.x pnames
+    switch (pname) {
+        case GL_MAX_VIEWPORT_DIMS:
+            needed = 2;
+            break;
+
+        case GL_PROGRAM_BINARY_FORMATS:
+            glGetIntegerv(GL_NUM_PROGRAM_BINARY_FORMATS, &needed);
+            break;
+    }
+#endif
+
 #ifdef GL_ES_VERSION_2_0
     // GLES 2.x pnames
     switch (pname) {
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index 9e81a8c..24c68ec 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -189,10 +189,6 @@
 
 LOCAL_INIT_RC := surfaceflinger.rc
 
-ifneq ($(ENABLE_CPUSETS),)
-    LOCAL_CFLAGS += -DENABLE_CPUSETS
-endif
-
 ifeq ($(TARGET_USES_HWC2),true)
     LOCAL_CFLAGS += -DUSE_HWC2
 endif
@@ -206,6 +202,7 @@
     liblog \
     libbinder \
     libutils \
+    libui \
     libdl
 
 LOCAL_WHOLE_STATIC_LIBRARIES := libsigchain
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index 3e9ef24..c6e6dcb 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -131,7 +131,7 @@
     if (mIsUsingVrComposer) {
         mComposer = IComposer::getService("vr_hwcomposer");
     } else {
-        mComposer = IComposer::getService("hwcomposer");
+        mComposer = IComposer::getService(); // use default name
     }
 
     if (mComposer == nullptr) {
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
index d3d0d51..ae6e0cc 100644
--- a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
@@ -27,15 +27,16 @@
 #include <utils/String8.h>
 #include <log/log.h>
 
-#include <ui/Rect.h>
-
 #include <EGL/egl.h>
 
 #include <hardware/hardware.h>
 #include <gui/BufferItem.h>
+#include <gui/BufferQueue.h>
 #include <gui/GraphicBufferAlloc.h>
 #include <gui/Surface.h>
+
 #include <ui/GraphicBuffer.h>
+#include <ui/Rect.h>
 
 #include "FramebufferSurface.h"
 #include "HWComposer.h"
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index a25e8a1..e49e734 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -23,9 +23,8 @@
 #include "HWC2.h"
 #include "ComposerHal.h"
 
-#include <gfx/FloatRect.h>
-
 #include <ui/Fence.h>
+#include <ui/FloatRect.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/Region.h>
 
@@ -74,12 +73,12 @@
 }
 
 using android::Fence;
+using android::FloatRect;
 using android::GraphicBuffer;
 using android::HdrCapabilities;
 using android::Rect;
 using android::Region;
 using android::sp;
-using android::gfx::FloatRect;
 using android::hardware::Return;
 using android::hardware::Void;
 
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index 93eb999..4419dc1 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -24,7 +24,7 @@
 #undef HWC2_USE_CPP11
 
 #include <ui/HdrCapabilities.h>
-#include <ui/mat4.h>
+#include <math/mat4.h>
 
 #include <utils/Log.h>
 #include <utils/StrongPointer.h>
@@ -38,12 +38,10 @@
 
 namespace android {
     class Fence;
+    class FloatRect;
     class GraphicBuffer;
     class Rect;
     class Region;
-    namespace gfx {
-        class FloatRect;
-    }
     namespace Hwc2 {
         class Composer;
     }
@@ -410,7 +408,7 @@
     [[clang::warn_unused_result]] Error setSidebandStream(
             const native_handle_t* stream);
     [[clang::warn_unused_result]] Error setSourceCrop(
-            const android::gfx::FloatRect& crop);
+            const android::FloatRect& crop);
     [[clang::warn_unused_result]] Error setTransform(Transform transform);
     [[clang::warn_unused_result]] Error setVisibleRegion(
             const android::Region& region);
diff --git a/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp b/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp
index a6171f5..4187890 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.cpp
@@ -34,33 +34,6 @@
 
 using namespace std::chrono_literals;
 
-static bool operator==(const hwc_color_t& lhs, const hwc_color_t& rhs) {
-    return lhs.r == rhs.r &&
-            lhs.g == rhs.g &&
-            lhs.b == rhs.b &&
-            lhs.a == rhs.a;
-}
-
-static bool operator==(const hwc_rect_t& lhs, const hwc_rect_t& rhs) {
-    return lhs.left == rhs.left &&
-            lhs.top == rhs.top &&
-            lhs.right == rhs.right &&
-            lhs.bottom == rhs.bottom;
-}
-
-static bool operator==(const hwc_frect_t& lhs, const hwc_frect_t& rhs) {
-    return lhs.left == rhs.left &&
-            lhs.top == rhs.top &&
-            lhs.right == rhs.right &&
-            lhs.bottom == rhs.bottom;
-}
-
-template <typename T>
-static inline bool operator!=(const T& lhs, const T& rhs)
-{
-    return !(lhs == rhs);
-}
-
 static uint8_t getMinorVersion(struct hwc_composer_device_1* device)
 {
     auto version = device->common.version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK;
@@ -80,19 +53,6 @@
 
 namespace android {
 
-void HWC2On1Adapter::DisplayContentsDeleter::operator()(
-        hwc_display_contents_1_t* contents)
-{
-    if (contents != nullptr) {
-        for (size_t l = 0; l < contents->numHwLayers; ++l) {
-            auto& layer = contents->hwLayers[l];
-            std::free(const_cast<hwc_rect_t*>(layer.visibleRegionScreen.rects));
-            std::free(const_cast<hwc_rect_t*>(layer.surfaceDamage.rects));
-        }
-    }
-    std::free(contents);
-}
-
 class HWC2On1Adapter::Callbacks : public hwc_procs_t {
     public:
         explicit Callbacks(HWC2On1Adapter& adapter) : mAdapter(adapter) {
@@ -161,8 +121,7 @@
 }
 
 void HWC2On1Adapter::doGetCapabilities(uint32_t* outCount,
-        int32_t* outCapabilities)
-{
+        int32_t* outCapabilities) {
     if (outCapabilities == nullptr) {
         *outCount = mCapabilities.size();
         return;
@@ -179,8 +138,7 @@
 }
 
 hwc2_function_pointer_t HWC2On1Adapter::doGetFunction(
-        FunctionDescriptor descriptor)
-{
+        FunctionDescriptor descriptor) {
     switch (descriptor) {
         // Device functions
         case FunctionDescriptor::CreateVirtualDisplay:
@@ -350,8 +308,7 @@
 // Device functions
 
 Error HWC2On1Adapter::createVirtualDisplay(uint32_t width,
-        uint32_t height, hwc2_display_t* outDisplay)
-{
+        uint32_t height, hwc2_display_t* outDisplay) {
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
     if (mHwc1VirtualDisplay) {
@@ -381,8 +338,7 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::destroyVirtualDisplay(hwc2_display_t displayId)
-{
+Error HWC2On1Adapter::destroyVirtualDisplay(hwc2_display_t displayId) {
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
     if (!mHwc1VirtualDisplay || (mHwc1VirtualDisplay->getId() != displayId)) {
@@ -396,8 +352,7 @@
     return Error::None;
 }
 
-void HWC2On1Adapter::dump(uint32_t* outSize, char* outBuffer)
-{
+void HWC2On1Adapter::dump(uint32_t* outSize, char* outBuffer) {
     if (outBuffer != nullptr) {
         auto copiedBytes = mDumpString.copy(outBuffer, *outSize);
         *outSize = static_cast<uint32_t>(copiedBytes);
@@ -450,8 +405,7 @@
     *outSize = static_cast<uint32_t>(mDumpString.size());
 }
 
-uint32_t HWC2On1Adapter::getMaxVirtualDisplayCount()
-{
+uint32_t HWC2On1Adapter::getMaxVirtualDisplayCount() {
     return mHwc1SupportsVirtualDisplays ? 1 : 0;
 }
 
@@ -465,8 +419,7 @@
 }
 
 Error HWC2On1Adapter::registerCallback(Callback descriptor,
-        hwc2_callback_data_t callbackData, hwc2_function_pointer_t pointer)
-{
+        hwc2_callback_data_t callbackData, hwc2_function_pointer_t pointer) {
     if (!isValid(descriptor)) {
         return Error::BadParameter;
     }
@@ -553,11 +506,8 @@
 HWC2On1Adapter::Display::Display(HWC2On1Adapter& device, HWC2::DisplayType type)
   : mId(sNextId++),
     mDevice(device),
-    mDirtyCount(0),
     mStateMutex(),
-    mZIsDirty(false),
     mHwc1RequestedContents(nullptr),
-    mHwc1ReceivedContents(nullptr),
     mRetireFence(),
     mChanges(),
     mHwc1Id(-1),
@@ -572,10 +522,13 @@
     mOutputBuffer(),
     mHasColorTransform(false),
     mLayers(),
-    mHwc1LayerMap() {}
+    mHwc1LayerMap(),
+    mNumAvailableRects(0),
+    mNextAvailableRect(nullptr),
+    mGeometryChanged(false)
+    {}
 
-Error HWC2On1Adapter::Display::acceptChanges()
-{
+Error HWC2On1Adapter::Display::acceptChanges() {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!mChanges) {
@@ -594,25 +547,21 @@
 
     mChanges->clearTypeChanges();
 
-    mHwc1RequestedContents = std::move(mHwc1ReceivedContents);
-
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::createLayer(hwc2_layer_t* outLayerId)
-{
+Error HWC2On1Adapter::Display::createLayer(hwc2_layer_t* outLayerId) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     auto layer = *mLayers.emplace(std::make_shared<Layer>(*this));
     mDevice.mLayers.emplace(std::make_pair(layer->getId(), layer));
     *outLayerId = layer->getId();
     ALOGV("[%" PRIu64 "] created layer %" PRIu64, mId, *outLayerId);
-    mZIsDirty = true;
+    markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::destroyLayer(hwc2_layer_t layerId)
-{
+Error HWC2On1Adapter::Display::destroyLayer(hwc2_layer_t layerId) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     const auto mapLayer = mDevice.mLayers.find(layerId);
@@ -631,12 +580,11 @@
         }
     }
     ALOGV("[%" PRIu64 "] destroyed layer %" PRIu64, mId, layerId);
-    mZIsDirty = true;
+    markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::getActiveConfig(hwc2_config_t* outConfig)
-{
+Error HWC2On1Adapter::Display::getActiveConfig(hwc2_config_t* outConfig) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!mActiveConfig) {
@@ -651,8 +599,7 @@
 }
 
 Error HWC2On1Adapter::Display::getAttribute(hwc2_config_t configId,
-        Attribute attribute, int32_t* outValue)
-{
+        Attribute attribute, int32_t* outValue) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (configId > mConfigs.size() || !mConfigs[configId]->isOnDisplay(*this)) {
@@ -667,8 +614,7 @@
 }
 
 Error HWC2On1Adapter::Display::getChangedCompositionTypes(
-        uint32_t* outNumElements, hwc2_layer_t* outLayers, int32_t* outTypes)
-{
+        uint32_t* outNumElements, hwc2_layer_t* outLayers, int32_t* outTypes) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!mChanges) {
@@ -701,8 +647,7 @@
 }
 
 Error HWC2On1Adapter::Display::getColorModes(uint32_t* outNumModes,
-        int32_t* outModes)
-{
+        int32_t* outModes) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!outModes) {
@@ -717,8 +662,7 @@
 }
 
 Error HWC2On1Adapter::Display::getConfigs(uint32_t* outNumConfigs,
-        hwc2_config_t* outConfigs)
-{
+        hwc2_config_t* outConfigs) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!outConfigs) {
@@ -737,8 +681,7 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::getDozeSupport(int32_t* outSupport)
-{
+Error HWC2On1Adapter::Display::getDozeSupport(int32_t* outSupport) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (mDevice.mHwc1MinorVersion < 4 || mHwc1Id != 0) {
@@ -751,15 +694,13 @@
 
 Error HWC2On1Adapter::Display::getHdrCapabilities(uint32_t* outNumTypes,
         int32_t* /*outTypes*/, float* /*outMaxLuminance*/,
-        float* /*outMaxAverageLuminance*/, float* /*outMinLuminance*/)
-{
+        float* /*outMaxAverageLuminance*/, float* /*outMinLuminance*/) {
     // This isn't supported on HWC1, so per the HWC2 header, return numTypes = 0
     *outNumTypes = 0;
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::getName(uint32_t* outSize, char* outName)
-{
+Error HWC2On1Adapter::Display::getName(uint32_t* outSize, char* outName) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!outName) {
@@ -772,8 +713,7 @@
 }
 
 Error HWC2On1Adapter::Display::getReleaseFences(uint32_t* outNumElements,
-        hwc2_layer_t* outLayers, int32_t* outFences)
-{
+        hwc2_layer_t* outLayers, int32_t* outFences) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     uint32_t numWritten = 0;
@@ -799,8 +739,7 @@
 
 Error HWC2On1Adapter::Display::getRequests(int32_t* outDisplayRequests,
         uint32_t* outNumElements, hwc2_layer_t* outLayers,
-        int32_t* outLayerRequests)
-{
+        int32_t* outLayerRequests) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!mChanges) {
@@ -829,16 +768,14 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::getType(int32_t* outType)
-{
+Error HWC2On1Adapter::Display::getType(int32_t* outType) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     *outType = static_cast<int32_t>(mType);
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::present(int32_t* outRetireFence)
-{
+Error HWC2On1Adapter::Display::present(int32_t* outRetireFence) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (mChanges) {
@@ -857,8 +794,7 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::setActiveConfig(hwc2_config_t configId)
-{
+Error HWC2On1Adapter::Display::setActiveConfig(hwc2_config_t configId) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     auto config = getConfig(configId);
@@ -890,8 +826,7 @@
 }
 
 Error HWC2On1Adapter::Display::setClientTarget(buffer_handle_t target,
-        int32_t acquireFence, int32_t /*dataspace*/, hwc_region_t /*damage*/)
-{
+        int32_t acquireFence, int32_t /*dataspace*/, hwc_region_t /*damage*/) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     ALOGV("[%" PRIu64 "] setClientTarget(%p, %d)", mId, target, acquireFence);
@@ -901,8 +836,7 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::setColorMode(android_color_mode_t mode)
-{
+Error HWC2On1Adapter::Display::setColorMode(android_color_mode_t mode) {
     std::unique_lock<std::recursive_mutex> lock (mStateMutex);
 
     ALOGV("[%" PRIu64 "] setColorMode(%d)", mId, mode);
@@ -933,8 +867,7 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::Display::setColorTransform(android_color_transform_t hint)
-{
+Error HWC2On1Adapter::Display::setColorTransform(android_color_transform_t hint) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     ALOGV("%" PRIu64 "] setColorTransform(%d)", mId,
@@ -944,8 +877,7 @@
 }
 
 Error HWC2On1Adapter::Display::setOutputBuffer(buffer_handle_t buffer,
-        int32_t releaseFence)
-{
+        int32_t releaseFence) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     ALOGV("[%" PRIu64 "] setOutputBuffer(%p, %d)", mId, buffer, releaseFence);
@@ -954,30 +886,25 @@
     return Error::None;
 }
 
-static bool isValid(PowerMode mode)
-{
+static bool isValid(PowerMode mode) {
     switch (mode) {
         case PowerMode::Off: // Fall-through
         case PowerMode::DozeSuspend: // Fall-through
         case PowerMode::Doze: // Fall-through
         case PowerMode::On: return true;
-        default: return false;
     }
 }
 
-static int getHwc1PowerMode(PowerMode mode)
-{
+static int getHwc1PowerMode(PowerMode mode) {
     switch (mode) {
         case PowerMode::Off: return HWC_POWER_MODE_OFF;
         case PowerMode::DozeSuspend: return HWC_POWER_MODE_DOZE_SUSPEND;
         case PowerMode::Doze: return HWC_POWER_MODE_DOZE;
         case PowerMode::On: return HWC_POWER_MODE_NORMAL;
-        default: return HWC_POWER_MODE_OFF;
     }
 }
 
-Error HWC2On1Adapter::Display::setPowerMode(PowerMode mode)
-{
+Error HWC2On1Adapter::Display::setPowerMode(PowerMode mode) {
     if (!isValid(mode)) {
         return Error::BadParameter;
     }
@@ -1007,12 +934,11 @@
     switch (enable) {
         case Vsync::Enable: // Fall-through
         case Vsync::Disable: return true;
-        default: return false;
+        case Vsync::Invalid: return false;
     }
 }
 
-Error HWC2On1Adapter::Display::setVsyncEnabled(Vsync enable)
-{
+Error HWC2On1Adapter::Display::setVsyncEnabled(Vsync enable) {
     if (!isValid(enable)) {
         return Error::BadParameter;
     }
@@ -1032,16 +958,15 @@
 }
 
 Error HWC2On1Adapter::Display::validate(uint32_t* outNumTypes,
-        uint32_t* outNumRequests)
-{
+        uint32_t* outNumRequests) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
-    ALOGV("[%" PRIu64 "] Entering validate", mId);
-
     if (!mChanges) {
         if (!mDevice.prepareAllDisplays()) {
             return Error::BadDisplay;
         }
+    } else {
+        ALOGE("Validate was called more than once!");
     }
 
     *outNumTypes = mChanges->getNumTypes();
@@ -1055,10 +980,7 @@
     return *outNumTypes > 0 ? Error::HasChanges : Error::None;
 }
 
-// Display helpers
-
-Error HWC2On1Adapter::Display::updateLayerZ(hwc2_layer_t layerId, uint32_t z)
-{
+Error HWC2On1Adapter::Display::updateLayerZ(hwc2_layer_t layerId, uint32_t z) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     const auto mapLayer = mDevice.mLayers.find(layerId);
@@ -1090,7 +1012,7 @@
 
     layer->setZ(z);
     mLayers.emplace(std::move(layer));
-    mZIsDirty = true;
+    markGeometryChanged();
 
     return Error::None;
 }
@@ -1159,8 +1081,7 @@
 static_assert(attributesMatch<HWC_DISPLAY_COLOR_TRANSFORM>(),
         "Tables out of sync");
 
-void HWC2On1Adapter::Display::populateConfigs()
-{
+void HWC2On1Adapter::Display::populateConfigs() {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     ALOGV("[%" PRIu64 "] populateConfigs", mId);
@@ -1238,8 +1159,7 @@
     populateColorModes();
 }
 
-void HWC2On1Adapter::Display::populateConfigs(uint32_t width, uint32_t height)
-{
+void HWC2On1Adapter::Display::populateConfigs(uint32_t width, uint32_t height) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     mConfigs.emplace_back(std::make_shared<Config>(*this));
@@ -1252,8 +1172,7 @@
     mActiveConfig = config;
 }
 
-bool HWC2On1Adapter::Display::prepare()
-{
+bool HWC2On1Adapter::Display::prepare() {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     // Only prepare display contents for displays HWC1 knows about
@@ -1268,88 +1187,45 @@
         return false;
     }
 
-    ALOGV("[%" PRIu64 "] Entering prepare", mId);
-
-    auto currentCount = mHwc1RequestedContents ?
-            mHwc1RequestedContents->numHwLayers : 0;
-    auto requiredCount = mLayers.size() + 1;
-    ALOGV("[%" PRIu64 "]   Requires %zd layers, %zd allocated in %p", mId,
-            requiredCount, currentCount, mHwc1RequestedContents.get());
-
-    bool layerCountChanged = (currentCount != requiredCount);
-    if (layerCountChanged) {
-        reallocateHwc1Contents();
-    }
-
-    bool applyAllState = false;
-    if (layerCountChanged || mZIsDirty) {
-        assignHwc1LayerIds();
-        mZIsDirty = false;
-        applyAllState = true;
-    }
+    allocateRequestedContents();
+    assignHwc1LayerIds();
 
     mHwc1RequestedContents->retireFenceFd = -1;
     mHwc1RequestedContents->flags = 0;
-    if (isDirty() || applyAllState) {
+    if (mGeometryChanged) {
         mHwc1RequestedContents->flags |= HWC_GEOMETRY_CHANGED;
     }
+    mHwc1RequestedContents->outbuf = mOutputBuffer.getBuffer();
+    mHwc1RequestedContents->outbufAcquireFenceFd = mOutputBuffer.getFence();
 
+    // +1 is for framebuffer target layer.
+    mHwc1RequestedContents->numHwLayers = mLayers.size() + 1;
     for (auto& layer : mLayers) {
         auto& hwc1Layer = mHwc1RequestedContents->hwLayers[layer->getHwc1Id()];
         hwc1Layer.releaseFenceFd = -1;
         hwc1Layer.acquireFenceFd = -1;
         ALOGV("Applying states for layer %" PRIu64 " ", layer->getId());
-        layer->applyState(hwc1Layer, applyAllState);
+        layer->applyState(hwc1Layer);
     }
 
-    mHwc1RequestedContents->outbuf = mOutputBuffer.getBuffer();
-    mHwc1RequestedContents->outbufAcquireFenceFd = mOutputBuffer.getFence();
-
     prepareFramebufferTarget();
 
+    resetGeometryMarker();
+
     return true;
 }
 
-static void cloneHWCRegion(hwc_region_t& region)
-{
-    auto size = sizeof(hwc_rect_t) * region.numRects;
-    auto newRects = static_cast<hwc_rect_t*>(std::malloc(size));
-    std::copy_n(region.rects, region.numRects, newRects);
-    region.rects = newRects;
-}
-
-HWC2On1Adapter::Display::HWC1Contents
-        HWC2On1Adapter::Display::cloneRequestedContents() const
-{
+void HWC2On1Adapter::Display::generateChanges() {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
-    size_t size = sizeof(hwc_display_contents_1_t) +
-            sizeof(hwc_layer_1_t) * (mHwc1RequestedContents->numHwLayers);
-    auto contents = static_cast<hwc_display_contents_1_t*>(std::malloc(size));
-    std::memcpy(contents, mHwc1RequestedContents.get(), size);
-    for (size_t layerId = 0; layerId < contents->numHwLayers; ++layerId) {
-        auto& layer = contents->hwLayers[layerId];
-        // Deep copy the regions to avoid double-frees
-        cloneHWCRegion(layer.visibleRegionScreen);
-        cloneHWCRegion(layer.surfaceDamage);
-    }
-    return HWC1Contents(contents);
-}
-
-void HWC2On1Adapter::Display::setReceivedContents(HWC1Contents contents)
-{
-    std::unique_lock<std::recursive_mutex> lock(mStateMutex);
-
-    mHwc1ReceivedContents = std::move(contents);
-
     mChanges.reset(new Changes);
 
-    size_t numLayers = mHwc1ReceivedContents->numHwLayers;
+    size_t numLayers = mHwc1RequestedContents->numHwLayers;
     for (size_t hwc1Id = 0; hwc1Id < numLayers; ++hwc1Id) {
-        const auto& receivedLayer = mHwc1ReceivedContents->hwLayers[hwc1Id];
+        const auto& receivedLayer = mHwc1RequestedContents->hwLayers[hwc1Id];
         if (mHwc1LayerMap.count(hwc1Id) == 0) {
             ALOGE_IF(receivedLayer.compositionType != HWC_FRAMEBUFFER_TARGET,
-                    "setReceivedContents: HWC1 layer %zd doesn't have a"
+                    "generateChanges: HWC1 layer %zd doesn't have a"
                     " matching HWC2 layer, and isn't the framebuffer target",
                     hwc1Id);
             continue;
@@ -1361,14 +1237,12 @@
     }
 }
 
-bool HWC2On1Adapter::Display::hasChanges() const
-{
+bool HWC2On1Adapter::Display::hasChanges() const {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
     return mChanges != nullptr;
 }
 
-Error HWC2On1Adapter::Display::set(hwc_display_contents_1& hwcContents)
-{
+Error HWC2On1Adapter::Display::set(hwc_display_contents_1& hwcContents) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     if (!mChanges || (mChanges->getNumTypes() > 0)) {
@@ -1404,15 +1278,13 @@
     return Error::None;
 }
 
-void HWC2On1Adapter::Display::addRetireFence(int fenceFd)
-{
+void HWC2On1Adapter::Display::addRetireFence(int fenceFd) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
     mRetireFence.add(fenceFd);
 }
 
 void HWC2On1Adapter::Display::addReleaseFences(
-        const hwc_display_contents_1_t& hwcContents)
-{
+        const hwc_display_contents_1_t& hwcContents) {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     size_t numLayers = hwcContents.numHwLayers;
@@ -1439,14 +1311,12 @@
     }
 }
 
-bool HWC2On1Adapter::Display::hasColorTransform() const
-{
+bool HWC2On1Adapter::Display::hasColorTransform() const {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
     return mHasColorTransform;
 }
 
-static std::string hwc1CompositionString(int32_t type)
-{
+static std::string hwc1CompositionString(int32_t type) {
     switch (type) {
         case HWC_FRAMEBUFFER: return "Framebuffer";
         case HWC_OVERLAY: return "Overlay";
@@ -1459,8 +1329,7 @@
     }
 }
 
-static std::string hwc1TransformString(int32_t transform)
-{
+static std::string hwc1TransformString(int32_t transform) {
     switch (transform) {
         case 0: return "None";
         case HWC_TRANSFORM_FLIP_H: return "FlipH";
@@ -1475,8 +1344,7 @@
     }
 }
 
-static std::string hwc1BlendModeString(int32_t mode)
-{
+static std::string hwc1BlendModeString(int32_t mode) {
     switch (mode) {
         case HWC_BLENDING_NONE: return "None";
         case HWC_BLENDING_PREMULT: return "Premultiplied";
@@ -1486,16 +1354,14 @@
     }
 }
 
-static std::string rectString(hwc_rect_t rect)
-{
+static std::string rectString(hwc_rect_t rect) {
     std::stringstream output;
     output << "[" << rect.left << ", " << rect.top << ", ";
     output << rect.right << ", " << rect.bottom << "]";
     return output.str();
 }
 
-static std::string approximateFloatString(float f)
-{
+static std::string approximateFloatString(float f) {
     if (static_cast<int32_t>(f) == f) {
         return std::to_string(static_cast<int32_t>(f));
     }
@@ -1508,8 +1374,7 @@
     return std::string(buffer, bytesWritten);
 }
 
-static std::string frectString(hwc_frect_t frect)
-{
+static std::string frectString(hwc_frect_t frect) {
     std::stringstream output;
     output << "[" << approximateFloatString(frect.left) << ", ";
     output << approximateFloatString(frect.top) << ", ";
@@ -1518,8 +1383,7 @@
     return output.str();
 }
 
-static std::string colorString(hwc_color_t color)
-{
+static std::string colorString(hwc_color_t color) {
     std::stringstream output;
     output << "RGBA [";
     output << static_cast<int32_t>(color.r) << ", ";
@@ -1529,8 +1393,7 @@
     return output.str();
 }
 
-static std::string alphaString(float f)
-{
+static std::string alphaString(float f) {
     const size_t BUFFER_SIZE = 8;
     char buffer[BUFFER_SIZE] = {};
     auto bytesWritten = snprintf(buffer, BUFFER_SIZE, "%.3f", f);
@@ -1538,8 +1401,7 @@
 }
 
 static std::string to_string(const hwc_layer_1_t& hwcLayer,
-        int32_t hwc1MinorVersion)
-{
+        int32_t hwc1MinorVersion) {
     const char* fill = "          ";
 
     std::stringstream output;
@@ -1599,8 +1461,7 @@
 }
 
 static std::string to_string(const hwc_display_contents_1_t& hwcContents,
-        int32_t hwc1MinorVersion)
-{
+        int32_t hwc1MinorVersion) {
     const char* fill = "      ";
 
     std::stringstream output;
@@ -1622,8 +1483,7 @@
     return output.str();
 }
 
-std::string HWC2On1Adapter::Display::dump() const
-{
+std::string HWC2On1Adapter::Display::dump() const {
     std::unique_lock<std::recursive_mutex> lock(mStateMutex);
 
     std::stringstream output;
@@ -1663,10 +1523,7 @@
         output << "    Output buffer: " << mOutputBuffer.getBuffer() << '\n';
     }
 
-    if (mHwc1ReceivedContents) {
-        output << "    Last received HWC1 state\n";
-        output << to_string(*mHwc1ReceivedContents, mDevice.mHwc1MinorVersion);
-    } else if (mHwc1RequestedContents) {
+    if (mHwc1RequestedContents) {
         output << "    Last requested HWC1 state\n";
         output << to_string(*mHwc1RequestedContents, mDevice.mHwc1MinorVersion);
     }
@@ -1674,28 +1531,46 @@
     return output.str();
 }
 
+hwc_rect_t* HWC2On1Adapter::Display::GetRects(size_t numRects) {
+    if (numRects == 0) {
+        return nullptr;
+    }
+
+    if (numRects > mNumAvailableRects) {
+        // This should NEVER happen since we calculated how many rects the
+        // display would need.
+        ALOGE("Rect allocation failure! SF is likely to crash soon!");
+        return nullptr;
+
+    }
+    hwc_rect_t* rects = mNextAvailableRect;
+    mNextAvailableRect += numRects;
+    mNumAvailableRects -= numRects;
+    return rects;
+}
+
+hwc_display_contents_1* HWC2On1Adapter::Display::getDisplayContents() {
+    return mHwc1RequestedContents.get();
+}
+
 void HWC2On1Adapter::Display::Config::setAttribute(HWC2::Attribute attribute,
-        int32_t value)
-{
+        int32_t value) {
     mAttributes[attribute] = value;
 }
 
-int32_t HWC2On1Adapter::Display::Config::getAttribute(Attribute attribute) const
-{
+int32_t HWC2On1Adapter::Display::Config::getAttribute(Attribute attribute) const {
     if (mAttributes.count(attribute) == 0) {
         return -1;
     }
     return mAttributes.at(attribute);
 }
 
-void HWC2On1Adapter::Display::Config::setHwc1Id(uint32_t id)
-{
+void HWC2On1Adapter::Display::Config::setHwc1Id(uint32_t id) {
     android_color_mode_t colorMode = static_cast<android_color_mode_t>(getAttribute(ColorMode));
     mHwc1Ids.emplace(colorMode, id);
 }
 
-bool HWC2On1Adapter::Display::Config::hasHwc1Id(uint32_t id) const
-{
+bool HWC2On1Adapter::Display::Config::hasHwc1Id(uint32_t id) const {
     for (const auto& idPair : mHwc1Ids) {
         if (id == idPair.second) {
             return true;
@@ -1705,8 +1580,7 @@
 }
 
 Error HWC2On1Adapter::Display::Config::getColorModeForHwc1Id(
-        uint32_t id, android_color_mode_t* outMode) const
-{
+        uint32_t id, android_color_mode_t* outMode) const {
     for (const auto& idPair : mHwc1Ids) {
         if (id == idPair.second) {
             *outMode = idPair.first;
@@ -1718,8 +1592,7 @@
 }
 
 Error HWC2On1Adapter::Display::Config::getHwc1IdForColorMode(android_color_mode_t mode,
-        uint32_t* outId) const
-{
+        uint32_t* outId) const {
     for (const auto& idPair : mHwc1Ids) {
         if (mode == idPair.first) {
             *outId = idPair.second;
@@ -1730,8 +1603,7 @@
     return Error::BadParameter;
 }
 
-bool HWC2On1Adapter::Display::Config::merge(const Config& other)
-{
+bool HWC2On1Adapter::Display::Config::merge(const Config& other) {
     auto attributes = {HWC2::Attribute::Width, HWC2::Attribute::Height,
             HWC2::Attribute::VsyncPeriod, HWC2::Attribute::DpiX,
             HWC2::Attribute::DpiY};
@@ -1753,8 +1625,7 @@
     return true;
 }
 
-std::set<android_color_mode_t> HWC2On1Adapter::Display::Config::getColorModes() const
-{
+std::set<android_color_mode_t> HWC2On1Adapter::Display::Config::getColorModes() const {
     std::set<android_color_mode_t> colorModes;
     for (const auto& idPair : mHwc1Ids) {
         colorModes.emplace(idPair.first);
@@ -1762,8 +1633,7 @@
     return colorModes;
 }
 
-std::string HWC2On1Adapter::Display::Config::toString(bool splitLine) const
-{
+std::string HWC2On1Adapter::Display::Config::toString(bool splitLine) const {
     std::string output;
 
     const size_t BUFFER_SIZE = 100;
@@ -1819,16 +1689,14 @@
 }
 
 std::shared_ptr<const HWC2On1Adapter::Display::Config>
-        HWC2On1Adapter::Display::getConfig(hwc2_config_t configId) const
-{
+        HWC2On1Adapter::Display::getConfig(hwc2_config_t configId) const {
     if (configId > mConfigs.size() || !mConfigs[configId]->isOnDisplay(*this)) {
         return nullptr;
     }
     return mConfigs[configId];
 }
 
-void HWC2On1Adapter::Display::populateColorModes()
-{
+void HWC2On1Adapter::Display::populateColorModes() {
     mColorModes = mConfigs[0]->getColorModes();
     for (const auto& config : mConfigs) {
         std::set<android_color_mode_t> intersection;
@@ -1840,8 +1708,7 @@
     }
 }
 
-void HWC2On1Adapter::Display::initializeActiveConfig()
-{
+void HWC2On1Adapter::Display::initializeActiveConfig() {
     if (mDevice.mHwc1Device->getActiveConfig == nullptr) {
         ALOGV("getActiveConfig is null, choosing config 0");
         mActiveConfig = mConfigs[0];
@@ -1886,22 +1753,40 @@
 
 }
 
-void HWC2On1Adapter::Display::reallocateHwc1Contents()
-{
-    // Allocate an additional layer for the framebuffer target
+void HWC2On1Adapter::Display::allocateRequestedContents() {
+    // What needs to be allocated:
+    // 1 hwc_display_contents_1_t
+    // 1 hwc_layer_1_t for each layer
+    // 1 hwc_rect_t for each layer's surfaceDamage
+    // 1 hwc_rect_t for each layer's visibleRegion
+    // 1 hwc_layer_1_t for the framebuffer
+    // 1 hwc_rect_t for the framebuffer's visibleRegion
+
+    // Count # of surfaceDamage
+    size_t numSurfaceDamages = 0;
+    for (const auto& layer : mLayers) {
+        numSurfaceDamages += layer->getNumSurfaceDamages();
+    }
+
+    // Count # of visibleRegions (start at 1 for mandatory framebuffer target
+    // region)
+    size_t numVisibleRegion = 1;
+    for (const auto& layer : mLayers) {
+        numVisibleRegion += layer->getNumVisibleRegions();
+    }
+
+    size_t numRects = numVisibleRegion + numSurfaceDamages;
     auto numLayers = mLayers.size() + 1;
     size_t size = sizeof(hwc_display_contents_1_t) +
-            sizeof(hwc_layer_1_t) * numLayers;
-    ALOGV("[%" PRIu64 "] reallocateHwc1Contents creating %zd layer%s", mId,
-            numLayers, numLayers != 1 ? "s" : "");
-    auto contents =
-            static_cast<hwc_display_contents_1_t*>(std::calloc(size, 1));
-    contents->numHwLayers = numLayers;
+            sizeof(hwc_layer_1_t) * numLayers +
+            sizeof(hwc_rect_t) * numRects;
+    auto contents = static_cast<hwc_display_contents_1_t*>(std::calloc(size, 1));
     mHwc1RequestedContents.reset(contents);
+    mNextAvailableRect = reinterpret_cast<hwc_rect_t*>(&contents->hwLayers[numLayers]);
+    mNumAvailableRects = numRects;
 }
 
-void HWC2On1Adapter::Display::assignHwc1LayerIds()
-{
+void HWC2On1Adapter::Display::assignHwc1LayerIds() {
     mHwc1LayerMap.clear();
     size_t nextHwc1Id = 0;
     for (auto& layer : mLayers) {
@@ -1911,8 +1796,7 @@
 }
 
 void HWC2On1Adapter::Display::updateTypeChanges(const hwc_layer_1_t& hwc1Layer,
-        const Layer& layer)
-{
+        const Layer& layer) {
     auto layerId = layer.getId();
     switch (hwc1Layer.compositionType) {
         case HWC_FRAMEBUFFER:
@@ -1947,16 +1831,14 @@
 }
 
 void HWC2On1Adapter::Display::updateLayerRequests(
-        const hwc_layer_1_t& hwc1Layer, const Layer& layer)
-{
+        const hwc_layer_1_t& hwc1Layer, const Layer& layer) {
     if ((hwc1Layer.hints & HWC_HINT_CLEAR_FB) != 0) {
         mChanges->addLayerRequest(layer.getId(),
                 LayerRequest::ClearClientTarget);
     }
 }
 
-void HWC2On1Adapter::Display::prepareFramebufferTarget()
-{
+void HWC2On1Adapter::Display::prepareFramebufferTarget() {
     // We check that mActiveConfig is valid in Display::prepare
     int32_t width = mActiveConfig->getAttribute(Attribute::Width);
     int32_t height = mActiveConfig->getAttribute(Attribute::Height);
@@ -1976,8 +1858,9 @@
     }
     hwc1Target.displayFrame = {0, 0, width, height};
     hwc1Target.planeAlpha = 255;
+
     hwc1Target.visibleRegionScreen.numRects = 1;
-    auto rects = static_cast<hwc_rect_t*>(std::malloc(sizeof(hwc_rect_t)));
+    hwc_rect_t* rects = GetRects(1);
     rects[0].left = 0;
     rects[0].top = 0;
     rects[0].right = width;
@@ -1995,42 +1878,37 @@
 HWC2On1Adapter::Layer::Layer(Display& display)
   : mId(sNextId++),
     mDisplay(display),
-    mDirtyCount(0),
     mBuffer(),
     mSurfaceDamage(),
-    mBlendMode(*this, BlendMode::None),
-    mColor(*this, {0, 0, 0, 0}),
-    mCompositionType(*this, Composition::Invalid),
-    mDisplayFrame(*this, {0, 0, -1, -1}),
-    mPlaneAlpha(*this, 0.0f),
-    mSidebandStream(*this, nullptr),
-    mSourceCrop(*this, {0.0f, 0.0f, -1.0f, -1.0f}),
-    mTransform(*this, Transform::None),
-    mVisibleRegion(*this, std::vector<hwc_rect_t>()),
+    mBlendMode(BlendMode::None),
+    mColor({0, 0, 0, 0}),
+    mCompositionType(Composition::Invalid),
+    mDisplayFrame({0, 0, -1, -1}),
+    mPlaneAlpha(0.0f),
+    mSidebandStream(nullptr),
+    mSourceCrop({0.0f, 0.0f, -1.0f, -1.0f}),
+    mTransform(Transform::None),
+    mVisibleRegion(),
     mZ(0),
     mReleaseFence(),
     mHwc1Id(0),
-    mHasUnsupportedPlaneAlpha(false),
-    mHasUnsupportedBackgroundColor(false) {}
+    mHasUnsupportedPlaneAlpha(false) {}
 
 bool HWC2On1Adapter::SortLayersByZ::operator()(
-        const std::shared_ptr<Layer>& lhs, const std::shared_ptr<Layer>& rhs)
-{
+        const std::shared_ptr<Layer>& lhs, const std::shared_ptr<Layer>& rhs) {
     return lhs->getZ() < rhs->getZ();
 }
 
 Error HWC2On1Adapter::Layer::setBuffer(buffer_handle_t buffer,
-        int32_t acquireFence)
-{
+        int32_t acquireFence) {
     ALOGV("Setting acquireFence to %d for layer %" PRIu64, acquireFence, mId);
     mBuffer.setBuffer(buffer);
     mBuffer.setFence(acquireFence);
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setCursorPosition(int32_t x, int32_t y)
-{
-    if (mCompositionType.getValue() != Composition::Cursor) {
+Error HWC2On1Adapter::Layer::setCursorPosition(int32_t x, int32_t y) {
+    if (mCompositionType != Composition::Cursor) {
         return Error::BadLayer;
     }
 
@@ -2044,8 +1922,11 @@
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setSurfaceDamage(hwc_region_t damage)
-{
+Error HWC2On1Adapter::Layer::setSurfaceDamage(hwc_region_t damage) {
+    // HWC1 supports surface damage starting only with version 1.5.
+    if (mDisplay.getDevice().mHwc1MinorVersion < 5) {
+        return Error::None;
+    }
     mSurfaceDamage.resize(damage.numRects);
     std::copy_n(damage.rects, damage.numRects, mSurfaceDamage.begin());
     return Error::None;
@@ -2053,104 +1934,91 @@
 
 // Layer state functions
 
-Error HWC2On1Adapter::Layer::setBlendMode(BlendMode mode)
-{
-    mBlendMode.setPending(mode);
+Error HWC2On1Adapter::Layer::setBlendMode(BlendMode mode) {
+    mBlendMode = mode;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setColor(hwc_color_t color)
-{
-    mColor.setPending(color);
+Error HWC2On1Adapter::Layer::setColor(hwc_color_t color) {
+    mColor = color;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setCompositionType(Composition type)
-{
-    mCompositionType.setPending(type);
+Error HWC2On1Adapter::Layer::setCompositionType(Composition type) {
+    mCompositionType = type;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setDataspace(android_dataspace_t)
-{
+Error HWC2On1Adapter::Layer::setDataspace(android_dataspace_t) {
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setDisplayFrame(hwc_rect_t frame)
-{
-    mDisplayFrame.setPending(frame);
+Error HWC2On1Adapter::Layer::setDisplayFrame(hwc_rect_t frame) {
+    mDisplayFrame = frame;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setPlaneAlpha(float alpha)
-{
-    mPlaneAlpha.setPending(alpha);
+Error HWC2On1Adapter::Layer::setPlaneAlpha(float alpha) {
+    mPlaneAlpha = alpha;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setSidebandStream(const native_handle_t* stream)
-{
-    mSidebandStream.setPending(stream);
+Error HWC2On1Adapter::Layer::setSidebandStream(const native_handle_t* stream) {
+    mSidebandStream = stream;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setSourceCrop(hwc_frect_t crop)
-{
-    mSourceCrop.setPending(crop);
+Error HWC2On1Adapter::Layer::setSourceCrop(hwc_frect_t crop) {
+    mSourceCrop = crop;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setTransform(Transform transform)
-{
-    mTransform.setPending(transform);
+Error HWC2On1Adapter::Layer::setTransform(Transform transform) {
+    mTransform = transform;
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setVisibleRegion(hwc_region_t rawVisible)
-{
-    std::vector<hwc_rect_t> visible(rawVisible.rects,
-            rawVisible.rects + rawVisible.numRects);
-    mVisibleRegion.setPending(std::move(visible));
+Error HWC2On1Adapter::Layer::setVisibleRegion(hwc_region_t visible) {
+    mVisibleRegion.resize(visible.numRects);
+    std::copy_n(visible.rects, visible.numRects, mVisibleRegion.begin());
+    mDisplay.markGeometryChanged();
     return Error::None;
 }
 
-Error HWC2On1Adapter::Layer::setZ(uint32_t z)
-{
+Error HWC2On1Adapter::Layer::setZ(uint32_t z) {
     mZ = z;
     return Error::None;
 }
 
-void HWC2On1Adapter::Layer::addReleaseFence(int fenceFd)
-{
+void HWC2On1Adapter::Layer::addReleaseFence(int fenceFd) {
     ALOGV("addReleaseFence %d to layer %" PRIu64, fenceFd, mId);
     mReleaseFence.add(fenceFd);
 }
 
-const sp<Fence>& HWC2On1Adapter::Layer::getReleaseFence() const
-{
+const sp<Fence>& HWC2On1Adapter::Layer::getReleaseFence() const {
     return mReleaseFence.get();
 }
 
-void HWC2On1Adapter::Layer::applyState(hwc_layer_1_t& hwc1Layer,
-        bool applyAllState)
-{
-    applyCommonState(hwc1Layer, applyAllState);
-    auto compositionType = mCompositionType.getPendingValue();
-    if (compositionType == Composition::SolidColor) {
-        applySolidColorState(hwc1Layer, applyAllState);
-    } else if (compositionType == Composition::Sideband) {
-        applySidebandState(hwc1Layer, applyAllState);
-    } else {
-        applyBufferState(hwc1Layer);
+void HWC2On1Adapter::Layer::applyState(hwc_layer_1_t& hwc1Layer) {
+    applyCommonState(hwc1Layer);
+    applyCompositionType(hwc1Layer);
+    switch (mCompositionType) {
+        case Composition::SolidColor : applySolidColorState(hwc1Layer); break;
+        case Composition::Sideband : applySidebandState(hwc1Layer); break;
+        default: applyBufferState(hwc1Layer); break;
     }
-    applyCompositionType(hwc1Layer, applyAllState);
 }
 
-// Layer dump helpers
-
 static std::string regionStrings(const std::vector<hwc_rect_t>& visibleRegion,
-        const std::vector<hwc_rect_t>& surfaceDamage)
-{
+        const std::vector<hwc_rect_t>& surfaceDamage) {
     std::string regions;
     regions += "        Visible Region";
     regions.resize(40, ' ');
@@ -2178,40 +2046,38 @@
     return regions;
 }
 
-std::string HWC2On1Adapter::Layer::dump() const
-{
+std::string HWC2On1Adapter::Layer::dump() const {
     std::stringstream output;
     const char* fill = "      ";
 
-    output << fill << to_string(mCompositionType.getPendingValue());
+    output << fill << to_string(mCompositionType);
     output << " Layer  HWC2/1: " << mId << "/" << mHwc1Id << "  ";
     output << "Z: " << mZ;
-    if (mCompositionType.getValue() == HWC2::Composition::SolidColor) {
-        output << "  " << colorString(mColor.getValue());
-    } else if (mCompositionType.getValue() == HWC2::Composition::Sideband) {
-        output << "  Handle: " << mSidebandStream.getValue() << '\n';
+    if (mCompositionType == HWC2::Composition::SolidColor) {
+        output << "  " << colorString(mColor);
+    } else if (mCompositionType == HWC2::Composition::Sideband) {
+        output << "  Handle: " << mSidebandStream << '\n';
     } else {
         output << "  Buffer: " << mBuffer.getBuffer() << "/" <<
                 mBuffer.getFence() << '\n';
         output << fill << "  Display frame [LTRB]: " <<
-                rectString(mDisplayFrame.getValue()) << '\n';
+                rectString(mDisplayFrame) << '\n';
         output << fill << "  Source crop: " <<
-                frectString(mSourceCrop.getValue()) << '\n';
-        output << fill << "  Transform: " << to_string(mTransform.getValue());
-        output << "  Blend mode: " << to_string(mBlendMode.getValue());
-        if (mPlaneAlpha.getValue() != 1.0f) {
+                frectString(mSourceCrop) << '\n';
+        output << fill << "  Transform: " << to_string(mTransform);
+        output << "  Blend mode: " << to_string(mBlendMode);
+        if (mPlaneAlpha != 1.0f) {
             output << "  Alpha: " <<
-                alphaString(mPlaneAlpha.getValue()) << '\n';
+                alphaString(mPlaneAlpha) << '\n';
         } else {
             output << '\n';
         }
-        output << regionStrings(mVisibleRegion.getValue(), mSurfaceDamage);
+        output << regionStrings(mVisibleRegion, mSurfaceDamage);
     }
     return output.str();
 }
 
-static int getHwc1Blending(HWC2::BlendMode blendMode)
-{
+static int getHwc1Blending(HWC2::BlendMode blendMode) {
     switch (blendMode) {
         case BlendMode::Coverage: return HWC_BLENDING_COVERAGE;
         case BlendMode::Premultiplied: return HWC_BLENDING_PREMULT;
@@ -2219,169 +2085,124 @@
     }
 }
 
-void HWC2On1Adapter::Layer::applyCommonState(hwc_layer_1_t& hwc1Layer,
-        bool applyAllState)
-{
+void HWC2On1Adapter::Layer::applyCommonState(hwc_layer_1_t& hwc1Layer) {
     auto minorVersion = mDisplay.getDevice().getHwc1MinorVersion();
-    if (applyAllState || mBlendMode.isDirty()) {
-        hwc1Layer.blending = getHwc1Blending(mBlendMode.getPendingValue());
-        mBlendMode.latch();
-    }
-    if (applyAllState || mDisplayFrame.isDirty()) {
-        hwc1Layer.displayFrame = mDisplayFrame.getPendingValue();
-        mDisplayFrame.latch();
-    }
-    if (applyAllState || mPlaneAlpha.isDirty()) {
-        auto pendingAlpha = mPlaneAlpha.getPendingValue();
-        if (minorVersion < 2) {
-            mHasUnsupportedPlaneAlpha = pendingAlpha < 1.0f;
-        } else {
-            hwc1Layer.planeAlpha =
-                    static_cast<uint8_t>(255.0f * pendingAlpha + 0.5f);
-        }
-        mPlaneAlpha.latch();
-    }
-    if (applyAllState || mSourceCrop.isDirty()) {
-        if (minorVersion < 3) {
-            auto pending = mSourceCrop.getPendingValue();
-            hwc1Layer.sourceCropi.left =
-                    static_cast<int32_t>(std::ceil(pending.left));
-            hwc1Layer.sourceCropi.top =
-                    static_cast<int32_t>(std::ceil(pending.top));
-            hwc1Layer.sourceCropi.right =
-                    static_cast<int32_t>(std::floor(pending.right));
-            hwc1Layer.sourceCropi.bottom =
-                    static_cast<int32_t>(std::floor(pending.bottom));
-        } else {
-            hwc1Layer.sourceCropf = mSourceCrop.getPendingValue();
-        }
-        mSourceCrop.latch();
-    }
-    if (applyAllState || mTransform.isDirty()) {
-        hwc1Layer.transform =
-                static_cast<uint32_t>(mTransform.getPendingValue());
-        mTransform.latch();
-    }
-    if (applyAllState || mVisibleRegion.isDirty()) {
-        auto& hwc1VisibleRegion = hwc1Layer.visibleRegionScreen;
+    hwc1Layer.blending = getHwc1Blending(mBlendMode);
+    hwc1Layer.displayFrame = mDisplayFrame;
 
-        std::free(const_cast<hwc_rect_t*>(hwc1VisibleRegion.rects));
+    auto pendingAlpha = mPlaneAlpha;
+    if (minorVersion < 2) {
+        mHasUnsupportedPlaneAlpha = pendingAlpha < 1.0f;
+    } else {
+        hwc1Layer.planeAlpha =
+                static_cast<uint8_t>(255.0f * pendingAlpha + 0.5f);
+    }
 
-        auto pending = mVisibleRegion.getPendingValue();
-        hwc_rect_t* newRects = static_cast<hwc_rect_t*>(
-                std::malloc(sizeof(hwc_rect_t) * pending.size()));
-        std::copy(pending.begin(), pending.end(), newRects);
-        hwc1VisibleRegion.rects = const_cast<const hwc_rect_t*>(newRects);
-        hwc1VisibleRegion.numRects = pending.size();
-        mVisibleRegion.latch();
+    if (minorVersion < 3) {
+        auto pending = mSourceCrop;
+        hwc1Layer.sourceCropi.left =
+                static_cast<int32_t>(std::ceil(pending.left));
+        hwc1Layer.sourceCropi.top =
+                static_cast<int32_t>(std::ceil(pending.top));
+        hwc1Layer.sourceCropi.right =
+                static_cast<int32_t>(std::floor(pending.right));
+        hwc1Layer.sourceCropi.bottom =
+                static_cast<int32_t>(std::floor(pending.bottom));
+    } else {
+        hwc1Layer.sourceCropf = mSourceCrop;
+    }
+
+    hwc1Layer.transform = static_cast<uint32_t>(mTransform);
+
+    auto& hwc1VisibleRegion = hwc1Layer.visibleRegionScreen;
+    hwc1VisibleRegion.numRects = mVisibleRegion.size();
+    hwc_rect_t* rects = mDisplay.GetRects(hwc1VisibleRegion.numRects);
+    hwc1VisibleRegion.rects = rects;
+    for (size_t i = 0; i < mVisibleRegion.size(); i++) {
+        rects[i] = mVisibleRegion[i];
     }
 }
 
-void HWC2On1Adapter::Layer::applySolidColorState(hwc_layer_1_t& hwc1Layer,
-        bool applyAllState)
-{
-    if (applyAllState || mColor.isDirty()) {
-        // If the device does not support background color it is likely to make
-        // assumption regarding backgroundColor and handle (both fields occupy
-        // the same location in hwc_layer_1_t union).
-        // To not confuse these devices we don't set background color and we
-        // make sure handle is a null pointer.
-        if (mDisplay.getDevice().supportsBackgroundColor()) {
-            hwc1Layer.backgroundColor = mColor.getPendingValue();
-            mHasUnsupportedBackgroundColor = false;
-        } else {
-            hwc1Layer.handle = nullptr;
-            mHasUnsupportedBackgroundColor = true;
-        }
-        mColor.latch();
+void HWC2On1Adapter::Layer::applySolidColorState(hwc_layer_1_t& hwc1Layer) {
+    // If the device does not support background color it is likely to make
+    // assumption regarding backgroundColor and handle (both fields occupy
+    // the same location in hwc_layer_1_t union).
+    // To not confuse these devices we don't set background color and we
+    // make sure handle is a null pointer.
+    if (hasUnsupportedBackgroundColor()) {
+        hwc1Layer.handle = nullptr;
+    } else {
+        hwc1Layer.backgroundColor = mColor;
     }
 }
 
-void HWC2On1Adapter::Layer::applySidebandState(hwc_layer_1_t& hwc1Layer,
-        bool applyAllState)
-{
-    if (applyAllState || mSidebandStream.isDirty()) {
-        hwc1Layer.sidebandStream = mSidebandStream.getPendingValue();
-        mSidebandStream.latch();
-    }
+void HWC2On1Adapter::Layer::applySidebandState(hwc_layer_1_t& hwc1Layer) {
+    hwc1Layer.sidebandStream = mSidebandStream;
 }
 
-void HWC2On1Adapter::Layer::applyBufferState(hwc_layer_1_t& hwc1Layer)
-{
+void HWC2On1Adapter::Layer::applyBufferState(hwc_layer_1_t& hwc1Layer) {
     hwc1Layer.handle = mBuffer.getBuffer();
     hwc1Layer.acquireFenceFd = mBuffer.getFence();
 }
 
-void HWC2On1Adapter::Layer::applyCompositionType(hwc_layer_1_t& hwc1Layer,
-        bool applyAllState)
-{
+void HWC2On1Adapter::Layer::applyCompositionType(hwc_layer_1_t& hwc1Layer) {
     // HWC1 never supports color transforms or dataspaces and only sometimes
     // supports plane alpha (depending on the version). These require us to drop
     // some or all layers to client composition.
-    ALOGV("applyCompositionType");
-    ALOGV("mHasUnsupportedPlaneAlpha = %d", mHasUnsupportedPlaneAlpha);
-    ALOGV("mDisplay.hasColorTransform() = %d", mDisplay.hasColorTransform());
-    ALOGV("mHasUnsupportedBackgroundColor = %d", mHasUnsupportedBackgroundColor);
-
     if (mHasUnsupportedPlaneAlpha || mDisplay.hasColorTransform() ||
-        mHasUnsupportedBackgroundColor) {
+            hasUnsupportedBackgroundColor()) {
         hwc1Layer.compositionType = HWC_FRAMEBUFFER;
         hwc1Layer.flags = HWC_SKIP_LAYER;
         return;
     }
 
-    if (applyAllState || mCompositionType.isDirty()) {
-        hwc1Layer.flags = 0;
-        switch (mCompositionType.getPendingValue()) {
-            case Composition::Client:
+    hwc1Layer.flags = 0;
+    switch (mCompositionType) {
+        case Composition::Client:
+            hwc1Layer.compositionType = HWC_FRAMEBUFFER;
+            hwc1Layer.flags |= HWC_SKIP_LAYER;
+            break;
+        case Composition::Device:
+            hwc1Layer.compositionType = HWC_FRAMEBUFFER;
+            break;
+        case Composition::SolidColor:
+            // In theory the following line should work, but since the HWC1
+            // version of SurfaceFlinger never used HWC_BACKGROUND, HWC1
+            // devices may not work correctly. To be on the safe side, we
+            // fall back to client composition.
+            //
+            // hwc1Layer.compositionType = HWC_BACKGROUND;
+            hwc1Layer.compositionType = HWC_FRAMEBUFFER;
+            hwc1Layer.flags |= HWC_SKIP_LAYER;
+            break;
+        case Composition::Cursor:
+            hwc1Layer.compositionType = HWC_FRAMEBUFFER;
+            if (mDisplay.getDevice().getHwc1MinorVersion() >= 4) {
+                hwc1Layer.hints |= HWC_IS_CURSOR_LAYER;
+            }
+            break;
+        case Composition::Sideband:
+            if (mDisplay.getDevice().getHwc1MinorVersion() < 4) {
+                hwc1Layer.compositionType = HWC_SIDEBAND;
+            } else {
                 hwc1Layer.compositionType = HWC_FRAMEBUFFER;
                 hwc1Layer.flags |= HWC_SKIP_LAYER;
-                break;
-            case Composition::Device:
-                hwc1Layer.compositionType = HWC_FRAMEBUFFER;
-                break;
-            case Composition::SolidColor:
-                // In theory the following line should work, but since the HWC1
-                // version of SurfaceFlinger never used HWC_BACKGROUND, HWC1
-                // devices may not work correctly. To be on the safe side, we
-                // fall back to client composition.
-                //
-                // hwc1Layer.compositionType = HWC_BACKGROUND;
-                hwc1Layer.compositionType = HWC_FRAMEBUFFER;
-                hwc1Layer.flags |= HWC_SKIP_LAYER;
-                break;
-            case Composition::Cursor:
-                hwc1Layer.compositionType = HWC_FRAMEBUFFER;
-                if (mDisplay.getDevice().getHwc1MinorVersion() >= 4) {
-                    hwc1Layer.hints |= HWC_IS_CURSOR_LAYER;
-                }
-                break;
-            case Composition::Sideband:
-                if (mDisplay.getDevice().getHwc1MinorVersion() < 4) {
-                    hwc1Layer.compositionType = HWC_SIDEBAND;
-                } else {
-                    hwc1Layer.compositionType = HWC_FRAMEBUFFER;
-                    hwc1Layer.flags |= HWC_SKIP_LAYER;
-                }
-                break;
-            default:
-                hwc1Layer.compositionType = HWC_FRAMEBUFFER;
-                hwc1Layer.flags |= HWC_SKIP_LAYER;
-                break;
-        }
-        ALOGV("Layer %" PRIu64 " %s set to %d", mId,
-                to_string(mCompositionType.getPendingValue()).c_str(),
-                hwc1Layer.compositionType);
-        ALOGV_IF(hwc1Layer.flags & HWC_SKIP_LAYER, "    and skipping");
-        mCompositionType.latch();
+            }
+            break;
+        default:
+            hwc1Layer.compositionType = HWC_FRAMEBUFFER;
+            hwc1Layer.flags |= HWC_SKIP_LAYER;
+            break;
     }
+    ALOGV("Layer %" PRIu64 " %s set to %d", mId,
+            to_string(mCompositionType).c_str(),
+            hwc1Layer.compositionType);
+    ALOGV_IF(hwc1Layer.flags & HWC_SKIP_LAYER, "    and skipping");
 }
 
 // Adapter helpers
 
-void HWC2On1Adapter::populateCapabilities()
-{
-    ALOGV("populateCapabilities");
+void HWC2On1Adapter::populateCapabilities() {
     if (mHwc1MinorVersion >= 3U) {
         int supportedTypes = 0;
         auto result = mHwc1Device->query(mHwc1Device,
@@ -2408,8 +2229,7 @@
     }
 }
 
-HWC2On1Adapter::Display* HWC2On1Adapter::getDisplay(hwc2_display_t id)
-{
+HWC2On1Adapter::Display* HWC2On1Adapter::getDisplay(hwc2_display_t id) {
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
     auto display = mDisplays.find(id);
@@ -2421,8 +2241,7 @@
 }
 
 std::tuple<HWC2On1Adapter::Layer*, Error> HWC2On1Adapter::getLayer(
-        hwc2_display_t displayId, hwc2_layer_t layerId)
-{
+        hwc2_display_t displayId, hwc2_layer_t layerId) {
     auto display = getDisplay(displayId);
     if (!display) {
         return std::make_tuple(static_cast<Layer*>(nullptr), Error::BadDisplay);
@@ -2440,22 +2259,17 @@
     return std::make_tuple(layer.get(), Error::None);
 }
 
-void HWC2On1Adapter::populatePrimary()
-{
-    ALOGV("populatePrimary");
-
+void HWC2On1Adapter::populatePrimary() {
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
-    auto display =
-            std::make_shared<Display>(*this, HWC2::DisplayType::Physical);
+    auto display = std::make_shared<Display>(*this, HWC2::DisplayType::Physical);
     mHwc1DisplayMap[HWC_DISPLAY_PRIMARY] = display->getId();
     display->setHwc1Id(HWC_DISPLAY_PRIMARY);
     display->populateConfigs();
     mDisplays.emplace(display->getId(), std::move(display));
 }
 
-bool HWC2On1Adapter::prepareAllDisplays()
-{
+bool HWC2On1Adapter::prepareAllDisplays() {
     ATRACE_CALL();
 
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
@@ -2472,24 +2286,23 @@
         return false;
     }
 
+    // Build an array of hwc_display_contents_1 to call prepare() on HWC1.
+    mHwc1Contents.clear();
+
     // Always push the primary display
-    std::vector<HWC2On1Adapter::Display::HWC1Contents> requestedContents;
     auto primaryDisplayId = mHwc1DisplayMap[HWC_DISPLAY_PRIMARY];
     auto& primaryDisplay = mDisplays[primaryDisplayId];
-    auto primaryDisplayContents = primaryDisplay->cloneRequestedContents();
-    requestedContents.push_back(std::move(primaryDisplayContents));
+    mHwc1Contents.push_back(primaryDisplay->getDisplayContents());
 
     // Push the external display, if present
     if (mHwc1DisplayMap.count(HWC_DISPLAY_EXTERNAL) != 0) {
         auto externalDisplayId = mHwc1DisplayMap[HWC_DISPLAY_EXTERNAL];
         auto& externalDisplay = mDisplays[externalDisplayId];
-        auto externalDisplayContents =
-                externalDisplay->cloneRequestedContents();
-        requestedContents.push_back(std::move(externalDisplayContents));
+        mHwc1Contents.push_back(externalDisplay->getDisplayContents());
     } else {
         // Even if an external display isn't present, we still need to send
         // at least two displays down to HWC1
-        requestedContents.push_back(nullptr);
+        mHwc1Contents.push_back(nullptr);
     }
 
     // Push the hardware virtual display, if supported and present
@@ -2497,17 +2310,13 @@
         if (mHwc1DisplayMap.count(HWC_DISPLAY_VIRTUAL) != 0) {
             auto virtualDisplayId = mHwc1DisplayMap[HWC_DISPLAY_VIRTUAL];
             auto& virtualDisplay = mDisplays[virtualDisplayId];
-            auto virtualDisplayContents =
-                    virtualDisplay->cloneRequestedContents();
-            requestedContents.push_back(std::move(virtualDisplayContents));
+            mHwc1Contents.push_back(virtualDisplay->getDisplayContents());
         } else {
-            requestedContents.push_back(nullptr);
+            mHwc1Contents.push_back(nullptr);
         }
     }
 
-    mHwc1Contents.clear();
-    for (auto& displayContents : requestedContents) {
-        mHwc1Contents.push_back(displayContents.get());
+    for (auto& displayContents : mHwc1Contents) {
         if (!displayContents) {
             continue;
         }
@@ -2545,14 +2354,90 @@
 
         auto displayId = mHwc1DisplayMap[hwc1Id];
         auto& display = mDisplays[displayId];
-        display->setReceivedContents(std::move(requestedContents[hwc1Id]));
+        display->generateChanges();
     }
 
     return true;
 }
 
-Error HWC2On1Adapter::setAllDisplays()
-{
+void dumpHWC1Message(hwc_composer_device_1* device, size_t numDisplays,
+                     hwc_display_contents_1_t** displays) {
+    ALOGV("*****************************");
+    size_t displayId = 0;
+    while (displayId < numDisplays) {
+        hwc_display_contents_1_t* display = displays[displayId];
+
+        ALOGV("hwc_display_contents_1_t[%zu] @0x%p", displayId, display);
+        if (display == nullptr) {
+            displayId++;
+            continue;
+        }
+        ALOGV("  retirefd:0x%08x", display->retireFenceFd);
+        ALOGV("  outbuf  :0x%p", display->outbuf);
+        ALOGV("  outbuffd:0x%08x", display->outbufAcquireFenceFd);
+        ALOGV("  flags   :0x%08x", display->flags);
+        for(size_t layerId=0 ; layerId < display->numHwLayers ; layerId++) {
+            hwc_layer_1_t& layer = display->hwLayers[layerId];
+            ALOGV("    Layer[%zu]:", layerId);
+            ALOGV("      composition        : 0x%08x", layer.compositionType);
+            ALOGV("      hints              : 0x%08x", layer.hints);
+            ALOGV("      flags              : 0x%08x", layer.flags);
+            ALOGV("      handle             : 0x%p", layer.handle);
+            ALOGV("      transform          : 0x%08x", layer.transform);
+            ALOGV("      blending           : 0x%08x", layer.blending);
+            ALOGV("      sourceCropf        : %f, %f, %f, %f",
+                  layer.sourceCropf.left,
+                  layer.sourceCropf.top,
+                  layer.sourceCropf.right,
+                  layer.sourceCropf.bottom);
+            ALOGV("      displayFrame       : %d, %d, %d, %d",
+                  layer.displayFrame.left,
+                  layer.displayFrame.left,
+                  layer.displayFrame.left,
+                  layer.displayFrame.left);
+            hwc_region_t& visReg = layer.visibleRegionScreen;
+            ALOGV("      visibleRegionScreen: #0x%08zx[@0x%p]",
+                  visReg.numRects,
+                  visReg.rects);
+            for (size_t visRegId=0; visRegId < visReg.numRects ; visRegId++) {
+                if (layer.visibleRegionScreen.rects == nullptr) {
+                    ALOGV("        null");
+                } else {
+                    ALOGV("        visibleRegionScreen[%zu] %d, %d, %d, %d",
+                          visRegId,
+                          visReg.rects[visRegId].left,
+                          visReg.rects[visRegId].top,
+                          visReg.rects[visRegId].right,
+                          visReg.rects[visRegId].bottom);
+                }
+            }
+            ALOGV("      acquireFenceFd     : 0x%08x", layer.acquireFenceFd);
+            ALOGV("      releaseFenceFd     : 0x%08x", layer.releaseFenceFd);
+            ALOGV("      planeAlpha         : 0x%08x", layer.planeAlpha);
+            if (getMinorVersion(device) < 5)
+               continue;
+            ALOGV("      surfaceDamage      : #0x%08zx[@0x%p]",
+                  layer.surfaceDamage.numRects,
+                  layer.surfaceDamage.rects);
+            for (size_t sdId=0; sdId < layer.surfaceDamage.numRects ; sdId++) {
+                if (layer.surfaceDamage.rects == nullptr) {
+                    ALOGV("      null");
+                } else {
+                    ALOGV("      surfaceDamage[%zu] %d, %d, %d, %d",
+                          sdId,
+                          layer.surfaceDamage.rects[sdId].left,
+                          layer.surfaceDamage.rects[sdId].top,
+                          layer.surfaceDamage.rects[sdId].right,
+                          layer.surfaceDamage.rects[sdId].bottom);
+                }
+            }
+        }
+        displayId++;
+    }
+    ALOGV("-----------------------------");
+}
+
+Error HWC2On1Adapter::setAllDisplays() {
     ATRACE_CALL();
 
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
@@ -2576,6 +2461,7 @@
     ALOGV("Calling HWC1 set");
     {
         ATRACE_NAME("HWC1 set");
+        //dumpHWC1Message(mHwc1Device, mHwc1Contents.size(), mHwc1Contents.data());
         mHwc1Device->set(mHwc1Device, mHwc1Contents.size(),
                 mHwc1Contents.data());
     }
@@ -2598,14 +2484,13 @@
     return Error::None;
 }
 
-void HWC2On1Adapter::hwc1Invalidate()
-{
+void HWC2On1Adapter::hwc1Invalidate() {
     ALOGV("Received hwc1Invalidate");
 
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
     // If the HWC2-side callback hasn't been registered yet, buffer this until
-    // it is registered
+    // it is registered.
     if (mCallbacks.count(Callback::Refresh) == 0) {
         mHasPendingInvalidate = true;
         return;
@@ -2617,7 +2502,7 @@
         displays.emplace_back(displayPair.first);
     }
 
-    // Call back without the state lock held
+    // Call back without the state lock held.
     lock.unlock();
 
     auto refresh = reinterpret_cast<HWC2_PFN_REFRESH>(callbackInfo.pointer);
@@ -2626,14 +2511,13 @@
     }
 }
 
-void HWC2On1Adapter::hwc1Vsync(int hwc1DisplayId, int64_t timestamp)
-{
+void HWC2On1Adapter::hwc1Vsync(int hwc1DisplayId, int64_t timestamp) {
     ALOGV("Received hwc1Vsync(%d, %" PRId64 ")", hwc1DisplayId, timestamp);
 
     std::unique_lock<std::recursive_timed_mutex> lock(mStateMutex);
 
     // If the HWC2-side callback hasn't been registered yet, buffer this until
-    // it is registered
+    // it is registered.
     if (mCallbacks.count(Callback::Vsync) == 0) {
         mPendingVsyncs.emplace_back(hwc1DisplayId, timestamp);
         return;
@@ -2647,15 +2531,14 @@
     const auto& callbackInfo = mCallbacks[Callback::Vsync];
     auto displayId = mHwc1DisplayMap[hwc1DisplayId];
 
-    // Call back without the state lock held
+    // Call back without the state lock held.
     lock.unlock();
 
     auto vsync = reinterpret_cast<HWC2_PFN_VSYNC>(callbackInfo.pointer);
     vsync(callbackInfo.data, displayId, timestamp);
 }
 
-void HWC2On1Adapter::hwc1Hotplug(int hwc1DisplayId, int connected)
-{
+void HWC2On1Adapter::hwc1Hotplug(int hwc1DisplayId, int connected) {
     ALOGV("Received hwc1Hotplug(%d, %d)", hwc1DisplayId, connected);
 
     if (hwc1DisplayId != HWC_DISPLAY_EXTERNAL) {
@@ -2710,5 +2593,4 @@
             HWC2::Connection::Disconnected : HWC2::Connection::Connected;
     hotplug(callbackInfo.data, displayId, static_cast<int32_t>(hwc2Connected));
 }
-
 } // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.h b/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.h
index df33ec3..408bc41 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2On1Adapter.h
@@ -134,11 +134,6 @@
                     const std::shared_ptr<Layer>& rhs);
     };
 
-    class DisplayContentsDeleter {
-        public:
-            void operator()(struct hwc_display_contents_1* contents);
-    };
-
     // The semantics of the fences returned by the device differ between
     // hwc1.set() and hwc2.present(). Read hwcomposer.h and hwcomposer2.h
     // for more information.
@@ -193,9 +188,6 @@
 
     class Display {
         public:
-            typedef std::unique_ptr<hwc_display_contents_1,
-                    DisplayContentsDeleter> HWC1Contents;
-
             Display(HWC2On1Adapter& device, HWC2::DisplayType type);
 
             hwc2_display_t getId() const { return mId; }
@@ -206,10 +198,6 @@
             void setHwc1Id(int32_t id) { mHwc1Id = id; }
             int32_t getHwc1Id() const { return mHwc1Id; }
 
-            void incDirty() { ++mDirtyCount; }
-            void decDirty() { --mDirtyCount; }
-            bool isDirty() const { return mDirtyCount > 0 || mZIsDirty; }
-
             // HWC2 Display functions
             HWC2::Error acceptChanges();
             HWC2::Error createLayer(hwc2_layer_t* outLayerId);
@@ -233,7 +221,14 @@
                     uint32_t* outNumElements, hwc2_layer_t* outLayers,
                     int32_t* outLayerRequests);
             HWC2::Error getType(int32_t* outType);
+
+            // Since HWC1 "presents" (called "set" in HWC1) all Displays
+            // at once, the first call to any Display::present will trigger
+            // present() on all Displays in the Device. Subsequent calls without
+            // first calling validate() are noop (except for duping/returning
+            // the retire fence).
             HWC2::Error present(int32_t* outRetireFence);
+
             HWC2::Error setActiveConfig(hwc2_config_t configId);
             HWC2::Error setClientTarget(buffer_handle_t target,
                     int32_t acquireFence, int32_t dataspace,
@@ -244,6 +239,10 @@
                     int32_t releaseFence);
             HWC2::Error setPowerMode(HWC2::PowerMode mode);
             HWC2::Error setVsyncEnabled(HWC2::Vsync enabled);
+
+            // Since HWC1 "validates" (called "prepare" in HWC1) all Displays
+            // at once, the first call to any Display::validate() will trigger
+            // validate() on all other Displays in the Device.
             HWC2::Error validate(uint32_t* outNumTypes,
                     uint32_t* outNumRequests);
 
@@ -256,10 +255,9 @@
             void populateConfigs(uint32_t width, uint32_t height);
 
             bool prepare();
-            HWC1Contents cloneRequestedContents() const;
 
             // Called after hwc.prepare() with responses from the device.
-            void setReceivedContents(HWC1Contents contents);
+            void generateChanges();
 
             bool hasChanges() const;
             HWC2::Error set(hwc_display_contents_1& hwcContents);
@@ -270,6 +268,13 @@
 
             std::string dump() const;
 
+            // Return a rect from the pool allocated during validate()
+            hwc_rect_t* GetRects(size_t numRects);
+
+            hwc_display_contents_1* getDisplayContents();
+
+            void markGeometryChanged() { mGeometryChanged = true; }
+            void resetGeometryMarker() { mGeometryChanged = false;}
         private:
             class Config {
                 public:
@@ -314,7 +319,7 @@
                     std::unordered_map<android_color_mode_t, uint32_t> mHwc1Ids;
             };
 
-            // Store changes requested from the device upon calling prepare().
+            // Stores changes requested from the device upon calling prepare().
             // Handles change request to:
             //   - Layer composition type.
             //   - Layer hints.
@@ -363,7 +368,9 @@
             void populateColorModes();
             void initializeActiveConfig();
 
-            void reallocateHwc1Contents();
+            // Creates a bi-directional mapping between index in HWC1
+            // prepare/set array and Layer object. Stores mapping in
+            // mHwc1LayerMap and also updates Layer's attribute mHwc1Id.
             void assignHwc1LayerIds();
 
             // Called after a response to prepare() has been received:
@@ -376,13 +383,16 @@
             void updateLayerRequests(const struct hwc_layer_1& hwc1Layer,
                     const Layer& layer);
 
+            // Set all fields in HWC1 comm array for layer containing the
+            // HWC_FRAMEBUFFER_TARGET (always the last layer).
             void prepareFramebufferTarget();
 
+            // Display ID generator.
             static std::atomic<hwc2_display_t> sNextId;
             const hwc2_display_t mId;
-            HWC2On1Adapter& mDevice;
 
-            std::atomic<size_t> mDirtyCount;
+
+            HWC2On1Adapter& mDevice;
 
             // The state of this display should only be modified from
             // SurfaceFlinger's main loop, with the exception of when dump is
@@ -395,15 +405,18 @@
             // which require locking.
             mutable std::recursive_mutex mStateMutex;
 
-            bool mZIsDirty;
+            // Allocate RAM able to store all layers and rects used for
+            // communication with HWC1. Place allocated RAM in variable
+            // mHwc1RequestedContents.
+            void allocateRequestedContents();
 
             // Array of structs exchanged between client and hwc1 device.
-            HWC1Contents mHwc1RequestedContents; // Sent to device upon calling prepare().
-            HWC1Contents mHwc1ReceivedContents;  // Returned by device after prepare().
-
+            // Sent to device upon calling prepare().
+            std::unique_ptr<hwc_display_contents_1> mHwc1RequestedContents;
+    private:
             DeferredFence mRetireFence;
 
-            // Will only be non-null after the layer has been validated but
+            // Will only be non-null after the Display has been validated and
             // before it has been presented
             std::unique_ptr<Changes> mChanges;
 
@@ -418,15 +431,34 @@
             HWC2::PowerMode mPowerMode;
             HWC2::Vsync mVsyncEnabled;
 
+            // Used to populate HWC1 HWC_FRAMEBUFFER_TARGET layer
             FencedBuffer mClientTarget;
+
+
             FencedBuffer mOutputBuffer;
 
             bool mHasColorTransform;
 
+            // All layers this Display is aware of.
             std::multiset<std::shared_ptr<Layer>, SortLayersByZ> mLayers;
+
+            // Mapping between layer index in array of hwc_display_contents_1*
+            // passed to HWC1 during validate/set and Layer object.
             std::unordered_map<size_t, std::shared_ptr<Layer>> mHwc1LayerMap;
+
+            // All communication with HWC1 via prepare/set is done with one
+            // alloc. This pointer is pointing to a pool of hwc_rect_t.
+            size_t mNumAvailableRects;
+            hwc_rect_t* mNextAvailableRect;
+
+            // True if any of the Layers contained in this Display have been
+            // updated with anything other than a buffer since last call to
+            // Display::set()
+            bool mGeometryChanged;
     };
 
+    // Utility template calling a Display object method directly based on the
+    // hwc2_display_t displayId parameter.
     template <typename ...Args>
     static int32_t callDisplayFunction(hwc2_device_t* device,
             hwc2_display_t displayId, HWC2::Error (Display::*member)(Args...),
@@ -468,7 +500,8 @@
     static int32_t setColorModeHook(hwc2_device_t* device,
             hwc2_display_t display, int32_t /*android_color_mode_t*/ intMode) {
         auto mode = static_cast<android_color_mode_t>(intMode);
-        return callDisplayFunction(device, display, &Display::setColorMode, mode);
+        return callDisplayFunction(device, display, &Display::setColorMode,
+                mode);
     }
 
     static int32_t setPowerModeHook(hwc2_device_t* device,
@@ -485,46 +518,6 @@
                 enabled);
     }
 
-    // Layer functions
-
-    template <typename T>
-    class LatchedState {
-        public:
-            LatchedState(Layer& parent, T initialValue)
-              : mParent(parent),
-                mPendingValue(initialValue),
-                mValue(initialValue) {}
-
-            void setPending(T value) {
-                if (value == mPendingValue) {
-                    return;
-                }
-                if (mPendingValue == mValue) {
-                    mParent.incDirty();
-                } else if (value == mValue) {
-                    mParent.decDirty();
-                }
-                mPendingValue = value;
-            }
-
-            T getValue() const { return mValue; }
-            T getPendingValue() const { return mPendingValue; }
-
-            bool isDirty() const { return mPendingValue != mValue; }
-
-            void latch() {
-                if (isDirty()) {
-                    mValue = mPendingValue;
-                    mParent.decDirty();
-                }
-            }
-
-        private:
-            Layer& mParent;
-            T mPendingValue;
-            T mValue;
-    };
-
     class Layer {
         public:
             explicit Layer(Display& display);
@@ -535,10 +528,6 @@
             hwc2_layer_t getId() const { return mId; }
             Display& getDisplay() const { return mDisplay; }
 
-            void incDirty() { if (mDirtyCount++ == 0) mDisplay.incDirty(); }
-            void decDirty() { if (--mDirtyCount == 0) mDisplay.decDirty(); }
-            bool isDirty() const { return mDirtyCount > 0; }
-
             // HWC2 Layer functions
             HWC2::Error setBuffer(buffer_handle_t buffer, int32_t acquireFence);
             HWC2::Error setCursorPosition(int32_t x, int32_t y);
@@ -558,7 +547,7 @@
             HWC2::Error setZ(uint32_t z);
 
             HWC2::Composition getCompositionType() const {
-                return mCompositionType.getValue();
+                return mCompositionType;
             }
             uint32_t getZ() const { return mZ; }
 
@@ -568,47 +557,57 @@
             void setHwc1Id(size_t id) { mHwc1Id = id; }
             size_t getHwc1Id() const { return mHwc1Id; }
 
-            void applyState(struct hwc_layer_1& hwc1Layer, bool applyAllState);
+            // Write state to HWC1 communication struct.
+            void applyState(struct hwc_layer_1& hwc1Layer);
 
             std::string dump() const;
 
+            std::size_t getNumVisibleRegions() { return mVisibleRegion.size(); }
+
+            std::size_t getNumSurfaceDamages() { return mSurfaceDamage.size(); }
+
+            // True if a layer cannot be properly rendered by the device due
+            // to usage of SolidColor (a.k.a BackgroundColor in HWC1).
+            bool hasUnsupportedBackgroundColor() {
+                return (mCompositionType == HWC2::Composition::SolidColor &&
+                        !mDisplay.getDevice().supportsBackgroundColor());
+            }
         private:
-            void applyCommonState(struct hwc_layer_1& hwc1Layer,
-                    bool applyAllState);
-            void applySolidColorState(struct hwc_layer_1& hwc1Layer,
-                    bool applyAllState);
-            void applySidebandState(struct hwc_layer_1& hwc1Layer,
-                    bool applyAllState);
+            void applyCommonState(struct hwc_layer_1& hwc1Layer);
+            void applySolidColorState(struct hwc_layer_1& hwc1Layer);
+            void applySidebandState(struct hwc_layer_1& hwc1Layer);
             void applyBufferState(struct hwc_layer_1& hwc1Layer);
-            void applyCompositionType(struct hwc_layer_1& hwc1Layer,
-                    bool applyAllState);
+            void applyCompositionType(struct hwc_layer_1& hwc1Layer);
 
             static std::atomic<hwc2_layer_t> sNextId;
             const hwc2_layer_t mId;
             Display& mDisplay;
-            size_t mDirtyCount;
 
             FencedBuffer mBuffer;
             std::vector<hwc_rect_t> mSurfaceDamage;
 
-            LatchedState<HWC2::BlendMode> mBlendMode;
-            LatchedState<hwc_color_t> mColor;
-            LatchedState<HWC2::Composition> mCompositionType;
-            LatchedState<hwc_rect_t> mDisplayFrame;
-            LatchedState<float> mPlaneAlpha;
-            LatchedState<const native_handle_t*> mSidebandStream;
-            LatchedState<hwc_frect_t> mSourceCrop;
-            LatchedState<HWC2::Transform> mTransform;
-            LatchedState<std::vector<hwc_rect_t>> mVisibleRegion;
+            HWC2::BlendMode mBlendMode;
+            hwc_color_t mColor;
+            HWC2::Composition mCompositionType;
+            hwc_rect_t mDisplayFrame;
+            float mPlaneAlpha;
+            const native_handle_t* mSidebandStream;
+            hwc_frect_t mSourceCrop;
+            HWC2::Transform mTransform;
+            std::vector<hwc_rect_t> mVisibleRegion;
+
             uint32_t mZ;
 
             DeferredFence mReleaseFence;
 
             size_t mHwc1Id;
             bool mHasUnsupportedPlaneAlpha;
-            bool mHasUnsupportedBackgroundColor;
     };
 
+    // Utility tempate calling a Layer object method based on ID parameters:
+    // hwc2_display_t displayId
+    // and
+    // hwc2_layer_t layerId
     template <typename ...Args>
     static int32_t callLayerFunction(hwc2_device_t* device,
             hwc2_display_t displayId, hwc2_layer_t layerId,
@@ -677,6 +676,7 @@
     std::vector<struct hwc_display_contents_1*> mHwc1Contents;
     HWC2::Error setAllDisplays();
 
+    // Callbacks
     void hwc1Invalidate();
     void hwc1Vsync(int hwc1DisplayId, int64_t timestamp);
     void hwc1Hotplug(int hwc1DisplayId, int connected);
@@ -698,6 +698,8 @@
     // callbacks or dump
 
     std::map<hwc2_layer_t, std::shared_ptr<Layer>> mLayers;
+
+    // A HWC1 supports only one virtual display.
     std::shared_ptr<Display> mHwc1VirtualDisplay;
 
     // These are potentially accessed from multiple threads, and are protected
@@ -712,10 +714,19 @@
     };
     std::unordered_map<HWC2::Callback, CallbackInfo> mCallbacks;
     bool mHasPendingInvalidate;
+
+    // There is a small gap between the time the HWC1 module is started and
+    // when the callbacks for vsync and hotplugs are registered by the
+    // HWC2on1Adapter. To prevent losing events they are stored in these arrays
+    // and fed to the callback as soon as possible.
     std::vector<std::pair<int, int64_t>> mPendingVsyncs;
     std::vector<std::pair<int, int>> mPendingHotplugs;
 
+    // Mapping between HWC1 display id and Display objects.
     std::map<hwc2_display_t, std::shared_ptr<Display>> mDisplays;
+
+    // Map HWC1 display type (HWC_DISPLAY_PRIMARY, HWC_DISPLAY_EXTERNAL,
+    // HWC_DISPLAY_VIRTUAL) to Display IDs generated by HWC2on1Adapter objects.
     std::unordered_map<int, hwc2_display_t> mHwc1DisplayMap;
 };
 
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.cpp b/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.cpp
index 0bfc56e..5b5f1cf 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.cpp
@@ -1031,7 +1031,7 @@
     virtual void setFrame(const Rect& frame) {
         getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame);
     }
-    virtual void setCrop(const gfx::FloatRect& crop) {
+    virtual void setCrop(const FloatRect& crop) {
         if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
             getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop);
         } else {
@@ -1160,6 +1160,7 @@
     case PIXEL_FORMAT_RGBA_8888:    return String8("RGBA_8888");
     case PIXEL_FORMAT_RGBX_8888:    return String8("RGBx_8888");
     case PIXEL_FORMAT_RGBA_FP16:    return String8("RGBA_FP16");
+    case PIXEL_FORMAT_RGBA_1010102: return String8("RGBA_1010102");
     case PIXEL_FORMAT_RGB_888:      return String8("RGB_888");
     case PIXEL_FORMAT_RGB_565:      return String8("RGB_565");
     case PIXEL_FORMAT_BGRA_8888:    return String8("BGRA_8888");
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h b/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h
index a94bc1e..f64d69a 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer_hwc1.h
@@ -48,14 +48,12 @@
 // ---------------------------------------------------------------------------
 
 class Fence;
+class FloatRect;
 class GraphicBuffer;
 class NativeHandle;
 class Region;
 class String8;
 class SurfaceFlinger;
-namespace gfx {
-    class FloatRect;
-}
 
 class HWComposer
 {
@@ -172,7 +170,7 @@
         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 gfx::FloatRect& crop) = 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;
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index 5f3c388..c5a4f99 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -19,6 +19,7 @@
 #include "HWComposer.h"
 
 #include <gui/BufferItem.h>
+#include <gui/BufferQueue.h>
 #include <gui/IProducerListener.h>
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
index 2636667..fb5fcc8 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
@@ -179,7 +179,7 @@
     // slot. Both mProducerSlotSource and mProducerBuffers are indexed by a
     // "producer slot"; see the mapSlot*() functions.
     uint64_t mProducerSlotSource;
-    sp<GraphicBuffer> mProducerBuffers[BufferQueue::NUM_BUFFER_SLOTS];
+    sp<GraphicBuffer> mProducerBuffers[BufferQueueDefs::NUM_BUFFER_SLOTS];
 
     // The QueueBufferOutput with the latest info from the sink, and with the
     // transform hint cleared. Since we defer queueBuffer from the GLES driver
diff --git a/services/surfaceflinger/Effects/Daltonizer.cpp b/services/surfaceflinger/Effects/Daltonizer.cpp
index a104e8f..c953c68 100644
--- a/services/surfaceflinger/Effects/Daltonizer.cpp
+++ b/services/surfaceflinger/Effects/Daltonizer.cpp
@@ -15,7 +15,7 @@
  */
 
 #include "Daltonizer.h"
-#include <ui/mat4.h>
+#include <math/mat4.h>
 
 namespace android {
 
diff --git a/services/surfaceflinger/Effects/Daltonizer.h b/services/surfaceflinger/Effects/Daltonizer.h
index d21b155..2fb60e9 100644
--- a/services/surfaceflinger/Effects/Daltonizer.h
+++ b/services/surfaceflinger/Effects/Daltonizer.h
@@ -17,7 +17,7 @@
 #ifndef SF_EFFECTS_DALTONIZER_H_
 #define SF_EFFECTS_DALTONIZER_H_
 
-#include <ui/mat4.h>
+#include <math/mat4.h>
 
 namespace android {
 
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index a854aec..2f83c0e 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -38,6 +38,7 @@
 #include <ui/PixelFormat.h>
 
 #include <gui/BufferItem.h>
+#include <gui/BufferQueue.h>
 #include <gui/Surface.h>
 
 #include "clz.h"
@@ -76,13 +77,14 @@
         mPendingStates(),
         mQueuedFrames(0),
         mSidebandStreamChanged(false),
+        mActiveBufferSlot(BufferQueue::INVALID_BUFFER_SLOT),
         mCurrentTransform(0),
         mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
         mOverrideScalingMode(-1),
         mCurrentOpacity(true),
         mBufferLatched(false),
         mCurrentFrameNumber(0),
-        mPreviousFrameNumber(-1U),
+        mPreviousFrameNumber(0),
         mRefreshPending(false),
         mFrameLatencyNeeded(false),
         mFiltering(false),
@@ -477,10 +479,10 @@
     return activeCrop;
 }
 
-gfx::FloatRect Layer::computeCrop(const sp<const DisplayDevice>& hw) const {
+FloatRect Layer::computeCrop(const sp<const DisplayDevice>& hw) const {
     // the content crop is the area of the content that gets scaled to the
     // layer's size. This is in buffer space.
-    gfx::FloatRect crop = getContentCrop().toFloatRect();
+    FloatRect crop = getContentCrop().toFloatRect();
 
     // In addition there is a WM-specified crop we pull from our drawing state.
     const State& s(getDrawingState());
@@ -674,7 +676,7 @@
         hwcInfo.displayFrame = transformedFrame;
     }
 
-    gfx::FloatRect sourceCrop = computeCrop(displayDevice);
+    FloatRect sourceCrop = computeCrop(displayDevice);
     error = hwcLayer->setSourceCrop(sourceCrop);
     if (error != HWC2::Error::None) {
         ALOGE("[%s] Failed to set source crop [%.3f, %.3f, %.3f, %.3f]: "
@@ -1305,6 +1307,7 @@
         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)
@@ -1903,8 +1906,10 @@
         Mutex::Autolock lock(mFrameEventHistoryMutex);
         mFrameEventHistory.addPostComposition(mCurrentFrameNumber,
                 glDoneFence, presentFence, compositorTiming);
-        mFrameEventHistory.addRetire(mPreviousFrameNumber,
-                retireFence);
+        if (mPreviousFrameNumber != 0) {
+            mFrameEventHistory.addRetire(mPreviousFrameNumber,
+                    retireFence);
+        }
     }
 
     // Update mFrameTracker.
@@ -1942,14 +1947,19 @@
 
 #ifdef USE_HWC2
 void Layer::releasePendingBuffer(nsecs_t dequeueReadyTime) {
-    mSurfaceFlingerConsumer->releasePendingBuffer();
+    if (!mSurfaceFlingerConsumer->releasePendingBuffer()) {
+        return;
+    }
+
     auto releaseFenceTime = std::make_shared<FenceTime>(
             mSurfaceFlingerConsumer->getPrevFinalReleaseFence());
     mReleaseTimeline.push(releaseFenceTime);
 
     Mutex::Autolock lock(mFrameEventHistoryMutex);
-    mFrameEventHistory.addRelease(
-            mPreviousFrameNumber, dequeueReadyTime, std::move(releaseFenceTime));
+    if (mPreviousFrameNumber != 0) {
+        mFrameEventHistory.addRelease(mPreviousFrameNumber,
+                dequeueReadyTime, std::move(releaseFenceTime));
+    }
 }
 #endif
 
@@ -2135,8 +2145,10 @@
         auto releaseFenceTime = std::make_shared<FenceTime>(
                 mSurfaceFlingerConsumer->getPrevFinalReleaseFence());
         mReleaseTimeline.push(releaseFenceTime);
-        mFrameEventHistory.addRelease(
-                mPreviousFrameNumber, latchTime, std::move(releaseFenceTime));
+        if (mPreviousFrameNumber != 0) {
+            mFrameEventHistory.addRelease(mPreviousFrameNumber,
+                    latchTime, std::move(releaseFenceTime));
+        }
 #endif
     }
 
@@ -2338,7 +2350,7 @@
     const Rect& frame = hwcInfo.displayFrame;
     result.appendFormat("%4d %4d %4d %4d | ", frame.left, frame.top,
             frame.right, frame.bottom);
-    const gfx::FloatRect& crop = hwcInfo.sourceCrop;
+    const FloatRect& crop = hwcInfo.sourceCrop;
     result.appendFormat("%6.1f %6.1f %6.1f %6.1f\n", crop.left, crop.top,
             crop.right, crop.bottom);
 
@@ -2371,6 +2383,11 @@
     mFrameEventHistory.dump(result);
 }
 
+void Layer::onDisconnect() {
+    Mutex::Autolock lock(mFrameEventHistoryMutex);
+    mFrameEventHistory.onDisconnect();
+}
+
 void Layer::addAndGetFrameTimestamps(const NewFrameEventsEntry* newTimestamps,
         FrameEventHistoryDelta *outDelta) {
     Mutex::Autolock lock(mFrameEventHistoryMutex);
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 8227dae..c5fea73 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -27,8 +27,6 @@
 #include <utils/String8.h>
 #include <utils/Timers.h>
 
-#include <gfx/FloatRect.h>
-
 #include <ui/FrameStats.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/PixelFormat.h>
@@ -446,6 +444,7 @@
 
     std::vector<OccupancyTracker::Segment> getOccupancyHistory(bool forceFlush);
 
+    void onDisconnect();
     void addAndGetFrameTimestamps(const NewFrameEventsEntry* newEntry,
             FrameEventHistoryDelta* outDelta);
 
@@ -513,7 +512,7 @@
 
     uint32_t getEffectiveUsage(uint32_t usage) const;
 
-    gfx::FloatRect computeCrop(const sp<const DisplayDevice>& hw) const;
+    FloatRect computeCrop(const sp<const DisplayDevice>& hw) 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.
@@ -657,7 +656,7 @@
     FenceTimeline mReleaseTimeline;
 
     // main thread
-    int mActiveBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
+    int mActiveBufferSlot;
     sp<GraphicBuffer> mActiveBuffer;
     sp<NativeHandle> mSidebandStream;
     Rect mCurrentCrop;
@@ -694,7 +693,7 @@
         HWC2::Composition compositionType;
         bool clearClientTarget;
         Rect displayFrame;
-        gfx::FloatRect sourceCrop;
+        FloatRect sourceCrop;
     };
     std::unordered_map<int32_t, HWCInfo> mHwcLayers;
 
diff --git a/services/surfaceflinger/LayerRejecter.cpp b/services/surfaceflinger/LayerRejecter.cpp
index 2bc0605..5ca7d39 100644
--- a/services/surfaceflinger/LayerRejecter.cpp
+++ b/services/surfaceflinger/LayerRejecter.cpp
@@ -16,6 +16,8 @@
 
 #include "LayerRejecter.h"
 
+#include <gui/BufferItem.h>
+
 #include "clz.h"
 
 #define DEBUG_RESIZE 0
@@ -123,4 +125,4 @@
     return false;
 }
 
-}  // namespace android
\ No newline at end of file
+}  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.h b/services/surfaceflinger/RenderEngine/RenderEngine.h
index 0259881..d19137b 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.h
@@ -23,7 +23,7 @@
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
-#include <ui/mat4.h>
+#include <math/mat4.h>
 #include <Transform.h>
 
 #define EGL_NO_CONFIG ((EGLConfig)0)
diff --git a/services/surfaceflinger/RenderEngine/Texture.h b/services/surfaceflinger/RenderEngine/Texture.h
index 8cf85fc..a07e0c3 100644
--- a/services/surfaceflinger/RenderEngine/Texture.h
+++ b/services/surfaceflinger/RenderEngine/Texture.h
@@ -15,7 +15,7 @@
  */
 
 #include <stdint.h>
-#include <ui/mat4.h>
+#include <math/mat4.h>
 
 #ifndef SF_RENDER_ENGINE_TEXTURE_H
 #define SF_RENDER_ENGINE_TEXTURE_H
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 462e5a6..1a9727a 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -176,8 +176,10 @@
         mFrameBuckets(),
         mTotalTime(0),
         mLastSwapTime(0),
-        mNumLayers(0),
-        mEnterVrMode(false)
+        mNumLayers(0)
+#ifdef USE_HWC2
+        ,mEnterVrMode(false)
+#endif
 {
     ALOGI("SurfaceFlinger is starting");
 
@@ -639,7 +641,7 @@
         FrameEvent::LATCH,
         FrameEvent::FIRST_REFRESH_START,
         FrameEvent::LAST_REFRESH_START,
-        FrameEvent::GL_COMPOSITION_DONE,
+        FrameEvent::GPU_COMPOSITION_DONE,
         getHwComposer().presentFenceRepresentsStartOfScanout() ?
                 FrameEvent::DISPLAY_PRESENT : FrameEvent::DISPLAY_RETIRE,
         FrameEvent::DEQUEUE_READY,
@@ -1204,12 +1206,17 @@
 }
 
 void SurfaceFlinger::updateVrMode() {
+    bool enteringVrMode = mEnterVrMode;
+    if (enteringVrMode == mHwc->isUsingVrComposer()) {
+        return;
+    }
+    if (enteringVrMode && !mVrHwc) {
+        // Construct new HWComposer without holding any locks.
+        mVrHwc = new HWComposer(true);
+        ALOGV("Vr HWC created");
+    }
     {
         Mutex::Autolock _l(mStateLock);
-        bool enteringVrMode = mEnterVrMode;
-        if (enteringVrMode == mHwc->isUsingVrComposer()) {
-            return;
-        }
 
         if (enteringVrMode) {
             // Start vrflinger thread, if it hasn't been started already.
@@ -1224,11 +1231,6 @@
                 }
             }
 
-            if (!mVrHwc) {
-                mVrHwc = new HWComposer(true);
-                ALOGV("Vr HWC created");
-            }
-
             resetHwc();
 
             mHwc = mVrHwc;
@@ -1265,6 +1267,7 @@
                             Fence::SIGNAL_TIME_PENDING);
             ATRACE_INT("FrameMissed", static_cast<int>(frameMissed));
             if (mPropagateBackpressure && frameMissed) {
+                ALOGD("Backpressure trigger, skipping transaction & refresh!");
                 signalLayerUpdate();
                 break;
             }
@@ -1549,46 +1552,49 @@
     ALOGV("rebuildLayerStacks");
 
     // rebuild the visible layer list per screen
-    if (CC_UNLIKELY(mVisibleRegionsDirty)) {
-        ATRACE_CALL();
-        mVisibleRegionsDirty = false;
-        invalidateHwcGeometry();
-
-        for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
-            Region opaqueRegion;
-            Region dirtyRegion;
-            Vector<sp<Layer>> layersSortedByZ;
-            const sp<DisplayDevice>& displayDevice(mDisplays[dpy]);
-            const Transform& tr(displayDevice->getTransform());
-            const Rect bounds(displayDevice->getBounds());
-            if (displayDevice->isDisplayOn()) {
-                computeVisibleRegions(
-                        displayDevice->getLayerStack(), dirtyRegion,
-                        opaqueRegion);
-
-                mDrawingState.traverseInZOrder([&](Layer* layer) {
-                    if (layer->getLayerStack() == displayDevice->getLayerStack()) {
-                        Region drawRegion(tr.transform(
-                                layer->visibleNonTransparentRegion));
-                        drawRegion.andSelf(bounds);
-                        if (!drawRegion.isEmpty()) {
-                            layersSortedByZ.add(layer);
-                        } else {
-                            // Clear out the HWC layer if this layer was
-                            // previously visible, but no longer is
-                            layer->setHwcLayer(displayDevice->getHwcDisplayId(),
-                                    nullptr);
-                        }
-                    }
-                });
-            }
-            displayDevice->setVisibleLayersSortedByZ(layersSortedByZ);
-            displayDevice->undefinedRegion.set(bounds);
-            displayDevice->undefinedRegion.subtractSelf(
-                    tr.transform(opaqueRegion));
-            displayDevice->dirtyRegion.orSelf(dirtyRegion);
-        }
+    if (CC_LIKELY(mVisibleRegionsDirty)) {
+        return;
     }
+
+    ATRACE_NAME("rebuildLayerStacks VR Dirty");
+    mVisibleRegionsDirty = false;
+    invalidateHwcGeometry();
+
+    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        Region opaqueRegion;
+        Region dirtyRegion;
+        Vector<sp<Layer>> layersSortedByZ;
+        const sp<DisplayDevice>& displayDevice(mDisplays[dpy]);
+        const Transform& tr(displayDevice->getTransform());
+        const Rect bounds(displayDevice->getBounds());
+        if (displayDevice->isDisplayOn()) {
+            computeVisibleRegions(
+                    displayDevice->getLayerStack(), dirtyRegion,
+                    opaqueRegion);
+
+            mDrawingState.traverseInZOrder([&](Layer* layer) {
+                if (layer->getLayerStack() == displayDevice->getLayerStack()) {
+                    Region drawRegion(tr.transform(
+                            layer->visibleNonTransparentRegion));
+                    drawRegion.andSelf(bounds);
+                    if (!drawRegion.isEmpty()) {
+                        layersSortedByZ.add(layer);
+                    } else {
+                        // Clear out the HWC layer if this layer was
+                        // previously visible, but no longer is
+                        layer->setHwcLayer(displayDevice->getHwcDisplayId(),
+                                nullptr);
+                    }
+                }
+            });
+        }
+        displayDevice->setVisibleLayersSortedByZ(layersSortedByZ);
+        displayDevice->undefinedRegion.set(bounds);
+        displayDevice->undefinedRegion.subtractSelf(
+                tr.transform(opaqueRegion));
+        displayDevice->dirtyRegion.orSelf(dirtyRegion);
+    }
+
 }
 
 void SurfaceFlinger::setUpHWComposer() {
@@ -2539,11 +2545,18 @@
     const ssize_t index = (p != nullptr) ? p->removeChild(layer) :
         mCurrentState.layersSortedByZ.remove(layer);
 
-    if (index < 0) {
+    // 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;
     }
 
     mLayersPendingRemoval.add(layer);
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index f52bd2d..c43786a 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -40,7 +40,7 @@
 
 #include <ui/FenceTime.h>
 #include <ui/PixelFormat.h>
-#include <ui/mat4.h>
+#include <math/mat4.h>
 
 #include <gui/FrameTimestamps.h>
 #include <gui/ISurfaceComposer.h>
diff --git a/services/surfaceflinger/SurfaceFlingerConsumer.cpp b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
index 942af13..2fcbdba 100644
--- a/services/surfaceflinger/SurfaceFlingerConsumer.cpp
+++ b/services/surfaceflinger/SurfaceFlingerConsumer.cpp
@@ -23,6 +23,7 @@
 #include <private/gui/SyncFeatures.h>
 
 #include <gui/BufferItem.h>
+#include <gui/BufferQueue.h>
 
 #include <utils/Errors.h>
 #include <utils/NativeHandle.h>
@@ -211,20 +212,21 @@
     }
 }
 
-void SurfaceFlingerConsumer::releasePendingBuffer()
+bool SurfaceFlingerConsumer::releasePendingBuffer()
 {
     if (!mPendingRelease.isPending) {
         ALOGV("Pending buffer already released");
-        return;
+        return false;
     }
     ALOGV("Releasing pending buffer");
     Mutex::Autolock lock(mMutex);
     status_t result = releaseBufferLocked(mPendingRelease.currentTexture,
             mPendingRelease.graphicBuffer, mPendingRelease.display,
             mPendingRelease.fence);
-    ALOGE_IF(result != NO_ERROR, "releasePendingBuffer failed: %s (%d)",
+    ALOGE_IF(result < NO_ERROR, "releasePendingBuffer failed: %s (%d)",
             strerror(-result), result);
     mPendingRelease = PendingRelease();
+    return true;
 }
 #endif
 
@@ -261,6 +263,13 @@
     }
 }
 
+void SurfaceFlingerConsumer::onDisconnect() {
+    sp<Layer> l = mLayer.promote();
+    if (l.get()) {
+        l->onDisconnect();
+    }
+}
+
 void SurfaceFlingerConsumer::addAndGetFrameTimestamps(
         const NewFrameEventsEntry* newTimestamps,
         FrameEventHistoryDelta *outDelta) {
diff --git a/services/surfaceflinger/SurfaceFlingerConsumer.h b/services/surfaceflinger/SurfaceFlingerConsumer.h
index 7713ed2..cfa70ed 100644
--- a/services/surfaceflinger/SurfaceFlingerConsumer.h
+++ b/services/surfaceflinger/SurfaceFlingerConsumer.h
@@ -18,6 +18,8 @@
 #define ANDROID_SURFACEFLINGERCONSUMER_H
 
 #include "DispSync.h"
+
+#include <ui/Region.h>
 #include <gui/GLConsumer.h>
 
 namespace android {
@@ -82,10 +84,11 @@
     sp<Fence> getPrevFinalReleaseFence() const;
 #ifdef USE_HWC2
     virtual void setReleaseFence(const sp<Fence>& fence) override;
-    void releasePendingBuffer();
+    bool releasePendingBuffer();
 #endif
 
-    virtual void addAndGetFrameTimestamps(
+    void onDisconnect() override;
+    void addAndGetFrameTimestamps(
             const NewFrameEventsEntry* newTimestamps,
             FrameEventHistoryDelta* outDelta) override;
 
diff --git a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
index 477eb27..5aaaab1 100644
--- a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
+++ b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
@@ -640,7 +640,7 @@
         FrameEvent::LATCH,
         FrameEvent::FIRST_REFRESH_START,
         FrameEvent::LAST_REFRESH_START,
-        FrameEvent::GL_COMPOSITION_DONE,
+        FrameEvent::GPU_COMPOSITION_DONE,
         FrameEvent::DISPLAY_RETIRE,
         FrameEvent::DEQUEUE_READY,
         FrameEvent::RELEASE,
@@ -2325,11 +2325,18 @@
     const ssize_t index = (p != nullptr) ? p->removeChild(layer) :
              mCurrentState.layersSortedByZ.remove(layer);
 
-    if (index < 0) {
+    // 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;
     }
 
     mLayersPendingRemoval.add(layer);
diff --git a/services/surfaceflinger/Transform.h b/services/surfaceflinger/Transform.h
index 66463a0..6640a13 100644
--- a/services/surfaceflinger/Transform.h
+++ b/services/surfaceflinger/Transform.h
@@ -22,8 +22,8 @@
 
 #include <ui/Point.h>
 #include <ui/Rect.h>
-#include <ui/vec2.h>
-#include <ui/vec3.h>
+#include <math/vec2.h>
+#include <math/vec3.h>
 
 #include <hardware/hardware.h>
 
diff --git a/services/surfaceflinger/main_surfaceflinger.cpp b/services/surfaceflinger/main_surfaceflinger.cpp
index 53a63bd..f151087 100644
--- a/services/surfaceflinger/main_surfaceflinger.cpp
+++ b/services/surfaceflinger/main_surfaceflinger.cpp
@@ -45,12 +45,10 @@
 
     set_sched_policy(0, SP_FOREGROUND);
 
-#ifdef ENABLE_CPUSETS
     // Put most SurfaceFlinger threads in the system-background cpuset
     // Keeps us from unnecessarily using big cores
     // Do this after the binder thread pool init
-    set_cpuset_policy(0, SP_SYSTEM);
-#endif
+    if (cpusets_enabled()) set_cpuset_policy(0, SP_SYSTEM);
 
     // initialize before clients can connect
     flinger->init();
diff --git a/services/vr/bufferhubd/Android.mk b/services/vr/bufferhubd/Android.mk
index 4ba2373..0db909c 100644
--- a/services/vr/bufferhubd/Android.mk
+++ b/services/vr/bufferhubd/Android.mk
@@ -33,7 +33,8 @@
 	libhardware \
 	liblog \
 	libsync \
-	libutils
+	libutils \
+	libgui
 
 include $(CLEAR_VARS)
 # Don't strip symbols so we see stack traces in logcat.
diff --git a/services/vr/sensord/pose_service.cpp b/services/vr/sensord/pose_service.cpp
index 8e4dbba..40eb21d 100644
--- a/services/vr/sensord/pose_service.cpp
+++ b/services/vr/sensord/pose_service.cpp
@@ -62,6 +62,7 @@
 static constexpr char kEnableSensorPlayProp[] = "dvr.enable_6dof_playback";
 static constexpr char kEnableSensorPlayIdProp[] = "dvr.6dof_playback_id";
 static constexpr char kEnablePoseRecordProp[] = "dvr.enable_pose_recording";
+static constexpr char kPredictorTypeProp[] = "dvr.predictor_type";
 
 // Persistent buffer names.
 static constexpr char kPoseRingBufferName[] = "PoseService:RingBuffer";
@@ -229,6 +230,15 @@
     }
   }
 
+  switch (property_get_int32(kPredictorTypeProp, 0)) {
+    case 1:
+      pose_predictor_ = posepredictor::Predictor::Create(
+          posepredictor::PredictorType::Quadric);
+    default:
+      pose_predictor_ = posepredictor::Predictor::Create(
+          posepredictor::PredictorType::Linear);
+  }
+
   enable_pose_recording_ = property_get_bool(kEnablePoseRecordProp, 0) == 1;
 
   SetPoseMode(DVR_POSE_MODE_6DOF);
@@ -326,10 +336,8 @@
     pose_timestamp = GetSystemClockNs() - 1;
 
   // Feed the sample to the predictor
-  pose_predictor_.Add(PosePredictor::Sample{.position = start_t_head,
-                                            .orientation = start_q_head,
-                                            .time_ns = pose_timestamp},
-                      &last_known_pose_);
+  AddPredictorPose(pose_predictor_.get(), start_t_head, start_q_head,
+                   pose_timestamp, &last_known_pose_);
 
   // Store one extra value, because the application is working on the next
   // frame and expects the minimum count from that frame on.
@@ -351,9 +359,9 @@
 
     // Make a pose prediction
     if (enable_pose_prediction_) {
-      pose_predictor_.Predict(target_time,
-                              target_time + right_eye_photon_offset_ns_,
-                              mapped_pose_buffer_->ring + index);
+      PredictPose(pose_predictor_.get(), target_time,
+                  target_time + right_eye_photon_offset_ns_,
+                  mapped_pose_buffer_->ring + index);
     } else {
       mapped_pose_buffer_->ring[index] = last_known_pose_;
     }
diff --git a/services/vr/sensord/pose_service.h b/services/vr/sensord/pose_service.h
index 300737c..899d5fb 100644
--- a/services/vr/sensord/pose_service.h
+++ b/services/vr/sensord/pose_service.h
@@ -12,8 +12,8 @@
 #include <pdx/service.h>
 #include <private/dvr/buffer_hub_client.h>
 #include <private/dvr/pose_client_internal.h>
+#include <private/dvr/dvr_pose_predictor.h>
 #include <private/dvr/ring_buffer.h>
-#include <private/dvr/linear_pose_predictor.h>
 
 #include "sensor_fusion.h"
 #include "sensor_thread.h"
@@ -118,7 +118,7 @@
   bool enable_external_pose_ = false;
 
   // The predictor to extrapolate pose samples.
-  LinearPosePredictor pose_predictor_;
+  std::unique_ptr<posepredictor::Predictor> pose_predictor_;
 
   // Pose ring buffer.
   std::shared_ptr<BufferProducer> ring_buffer_;
diff --git a/services/vr/sensord/sensor_ndk_thread.cpp b/services/vr/sensord/sensor_ndk_thread.cpp
index 815453b..9c3abbc 100644
--- a/services/vr/sensord/sensor_ndk_thread.cpp
+++ b/services/vr/sensord/sensor_ndk_thread.cpp
@@ -37,11 +37,10 @@
     // Start ALooper and initialize sensor access.
     {
       std::unique_lock<std::mutex> lock(mutex_);
-      initialization_result_ = InitializeSensors();
+      InitializeSensors();
       thread_started_ = true;
       init_condition_.notify_one();
-      if (!initialization_result_)
-        return;
+      // Continue on failure - the loop below will periodically retry.
     }
 
     EventConsumer consumer;
@@ -61,7 +60,7 @@
       constexpr int kMaxEvents = 100;
       sensors_event_t events[kMaxEvents];
       ssize_t event_count = 0;
-      if (looper_ && sensor_manager_) {
+      if (initialization_result_) {
         int poll_fd, poll_events;
         void* poll_source;
         // Poll for events.
@@ -79,7 +78,6 @@
           // This happens when sensorservice has died and restarted. To avoid
           // spinning we need to restart the sensor access.
           DestroySensors();
-          InitializeSensors();
         }
       } else {
         // When there is no sensor_device_, we still call the consumer at
@@ -114,7 +112,8 @@
   }
 
   // At this point, we've successfully initialized everything.
-  *out_success = initialization_result_;
+  // The NDK sensor thread will continue to retry on error, so assume success here.
+  *out_success = true;
 }
 
 SensorNdkThread::~SensorNdkThread() {
@@ -167,10 +166,13 @@
     }
   }
 
+  initialization_result_ = true;
   return true;
 }
 
 void SensorNdkThread::DestroySensors() {
+  if (!event_queue_)
+    return;
   for (size_t sensor_index = 0; sensor_index < sensor_user_count_.size();
        ++sensor_index) {
     if (sensor_user_count_[sensor_index] > 0) {
@@ -178,9 +180,19 @@
     }
   }
   ASensorManager_destroyEventQueue(sensor_manager_, event_queue_);
+  event_queue_ = nullptr;
+  initialization_result_ = false;
 }
 
 void SensorNdkThread::UpdateSensorUse() {
+  if (!initialization_result_) {
+    // Sleep for 1 second to avoid spinning during system instability.
+    usleep(1000 * 1000);
+    InitializeSensors();
+    if (!initialization_result_)
+      return;
+  }
+
   if (!enable_sensors_.empty()) {
     for (int sensor_index : enable_sensors_) {
       if (sensor_user_count_[sensor_index]++ == 0) {
diff --git a/services/vr/vr_window_manager/application.cpp b/services/vr/vr_window_manager/application.cpp
index 33cd499..467e95e 100644
--- a/services/vr/vr_window_manager/application.cpp
+++ b/services/vr/vr_window_manager/application.cpp
@@ -1,5 +1,6 @@
 #include "application.h"
 
+#include <inttypes.h>
 #include <EGL/egl.h>
 #include <GLES3/gl3.h>
 #include <binder/IServiceManager.h>
diff --git a/services/vr/vr_window_manager/composer/1.0/Android.bp b/services/vr/vr_window_manager/composer/1.0/Android.bp
index e3e47ff..58f83f8 100644
--- a/services/vr/vr_window_manager/composer/1.0/Android.bp
+++ b/services/vr/vr_window_manager/composer/1.0/Android.bp
@@ -6,13 +6,9 @@
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport -randroid.hardware:hardware/interfaces/ -randroid.dvr:frameworks/native/services/vr/vr_window_manager android.dvr.composer@1.0",
     srcs: [
         "IVrComposerClient.hal",
-        "IVrComposerView.hal",
-        "IVrComposerCallback.hal",
     ],
     out: [
         "android/dvr/composer/1.0/VrComposerClientAll.cpp",
-        "android/dvr/composer/1.0/VrComposerViewAll.cpp",
-        "android/dvr/composer/1.0/VrComposerCallbackAll.cpp",
     ],
 }
 
@@ -22,27 +18,13 @@
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hidl:system/libhidl/transport -randroid.hardware:hardware/interfaces/ -randroid.dvr:frameworks/native/services/vr/vr_window_manager android.dvr.composer@1.0",
     srcs: [
         "IVrComposerClient.hal",
-        "IVrComposerView.hal",
-        "IVrComposerCallback.hal",
     ],
     out: [
         "android/dvr/composer/1.0/IVrComposerClient.h",
         "android/dvr/composer/1.0/IHwVrComposerClient.h",
-        "android/dvr/composer/1.0/BnVrComposerClient.h",
-        "android/dvr/composer/1.0/BpVrComposerClient.h",
+        "android/dvr/composer/1.0/BnHwVrComposerClient.h",
+        "android/dvr/composer/1.0/BpHwVrComposerClient.h",
         "android/dvr/composer/1.0/BsVrComposerClient.h",
-
-        "android/dvr/composer/1.0/IVrComposerView.h",
-        "android/dvr/composer/1.0/IHwVrComposerView.h",
-        "android/dvr/composer/1.0/BnVrComposerView.h",
-        "android/dvr/composer/1.0/BpVrComposerView.h",
-        "android/dvr/composer/1.0/BsVrComposerView.h",
-
-        "android/dvr/composer/1.0/IVrComposerCallback.h",
-        "android/dvr/composer/1.0/IHwVrComposerCallback.h",
-        "android/dvr/composer/1.0/BnVrComposerCallback.h",
-        "android/dvr/composer/1.0/BpVrComposerCallback.h",
-        "android/dvr/composer/1.0/BsVrComposerCallback.h",
     ],
 }
 
diff --git a/services/vr/vr_window_manager/composer/1.0/IVrComposerCallback.hal b/services/vr/vr_window_manager/composer/1.0/IVrComposerCallback.hal
deleted file mode 100644
index 6e7255e..0000000
--- a/services/vr/vr_window_manager/composer/1.0/IVrComposerCallback.hal
+++ /dev/null
@@ -1,18 +0,0 @@
-package android.dvr.composer@1.0;
-
-import android.hardware.graphics.composer@2.1::IComposerClient;
-
-interface IVrComposerCallback {
-    struct Layer {
-        handle buffer;
-        handle fence;
-        android.hardware.graphics.composer@2.1::IComposerClient.Rect display_frame;
-        android.hardware.graphics.composer@2.1::IComposerClient.FRect crop;
-        android.hardware.graphics.composer@2.1::IComposerClient.BlendMode blend_mode;
-        float alpha;
-        uint32_t type;
-        uint32_t app_id;
-    };
-
-    onNewFrame(vec<Layer> frame);
-};
diff --git a/services/vr/vr_window_manager/composer/1.0/IVrComposerView.hal b/services/vr/vr_window_manager/composer/1.0/IVrComposerView.hal
deleted file mode 100644
index e16131a..0000000
--- a/services/vr/vr_window_manager/composer/1.0/IVrComposerView.hal
+++ /dev/null
@@ -1,9 +0,0 @@
-package android.dvr.composer@1.0;
-
-import IVrComposerCallback;
-
-interface IVrComposerView {
-    registerCallback(IVrComposerCallback callback);
-
-    releaseFrame();
-};
diff --git a/services/vr/vr_window_manager/composer/Android.bp b/services/vr/vr_window_manager/composer/Android.bp
index 08c105c..7c8bb86 100644
--- a/services/vr/vr_window_manager/composer/Android.bp
+++ b/services/vr/vr_window_manager/composer/Android.bp
@@ -6,7 +6,6 @@
   name: "libvrhwc",
 
   srcs: [
-    "impl/sync_timeline.cpp",
     "impl/vr_composer_view.cpp",
     "impl/vr_hwc.cpp",
     "impl/vr_composer_client.cpp",
@@ -33,11 +32,6 @@
 
   export_include_dirs: ["."],
 
-  include_dirs: [
-    // Access to software sync timeline.
-    "system/core/libsync",
-  ],
-
   cflags: [
     "-DLOG_TAG=\"vrhwc\"",
   ],
diff --git a/services/vr/vr_window_manager/composer/impl/sync_timeline.cpp b/services/vr/vr_window_manager/composer/impl/sync_timeline.cpp
deleted file mode 100644
index e63ed26..0000000
--- a/services/vr/vr_window_manager/composer/impl/sync_timeline.cpp
+++ /dev/null
@@ -1,43 +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.
- */
-#include "sync_timeline.h"
-
-#include <sys/cdefs.h>
-#include <sw_sync.h>
-#include <unistd.h>
-
-namespace android {
-namespace dvr {
-
-SyncTimeline::SyncTimeline() {}
-
-SyncTimeline::~SyncTimeline() {}
-
-bool SyncTimeline::Initialize() {
-  timeline_fd_.reset(sw_sync_timeline_create());
-  return timeline_fd_ >= 0;
-}
-
-int SyncTimeline::CreateFence(int time) {
-  return sw_sync_fence_create(timeline_fd_.get(), "dummy fence", time);
-}
-
-bool SyncTimeline::IncrementTimeline() {
-  return sw_sync_timeline_inc(timeline_fd_.get(), 1) == 0;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/vr_window_manager/composer/impl/sync_timeline.h b/services/vr/vr_window_manager/composer/impl/sync_timeline.h
deleted file mode 100644
index 945acbd..0000000
--- a/services/vr/vr_window_manager/composer/impl/sync_timeline.h
+++ /dev/null
@@ -1,45 +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 VR_WINDOW_MANAGER_COMPOSER_IMPL_SYNC_TIMELINE_H_
-#define VR_WINDOW_MANAGER_COMPOSER_IMPL_SYNC_TIMELINE_H_
-
-#include <android-base/unique_fd.h>
-
-namespace android {
-namespace dvr {
-
-// TODO(dnicoara): Remove this and move to EGL based fences.
-class SyncTimeline {
- public:
-  SyncTimeline();
-  ~SyncTimeline();
-
-  bool Initialize();
-
-  int CreateFence(int time);
-  bool IncrementTimeline();
-
- private:
-  base::unique_fd timeline_fd_;
-
-  SyncTimeline(const SyncTimeline&) = delete;
-  void operator=(const SyncTimeline&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // VR_WINDOW_MANAGER_COMPOSER_IMPL_SYNC_TIMELINE_H_
diff --git a/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp b/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp
index 1096a37..299e8f1 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp
+++ b/services/vr/vr_window_manager/composer/impl/vr_composer_view.cpp
@@ -16,19 +16,12 @@
   composer_view_->RegisterObserver(this);
 }
 
-void VrComposerView::ReleaseFrame() {
-  LOG_ALWAYS_FATAL_IF(!composer_view_, "VrComposerView not initialized");
-  composer_view_->ReleaseFrame();
-}
-
-void VrComposerView::OnNewFrame(const ComposerView::Frame& frame) {
+base::unique_fd VrComposerView::OnNewFrame(const ComposerView::Frame& frame) {
   std::lock_guard<std::mutex> guard(mutex_);
-  if (!callback_.get()) {
-    ReleaseFrame();
-    return;
-  }
+  if (!callback_.get())
+    return base::unique_fd();
 
-  callback_->OnNewFrame(frame);
+  return callback_->OnNewFrame(frame);
 }
 
 }  // namespace dvr
diff --git a/services/vr/vr_window_manager/composer/impl/vr_composer_view.h b/services/vr/vr_window_manager/composer/impl/vr_composer_view.h
index 5a938e9..8c5ee1f 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_composer_view.h
+++ b/services/vr/vr_window_manager/composer/impl/vr_composer_view.h
@@ -13,7 +13,7 @@
   class Callback {
    public:
     virtual ~Callback() = default;
-    virtual void OnNewFrame(const ComposerView::Frame& frame) = 0;
+    virtual base::unique_fd OnNewFrame(const ComposerView::Frame& frame) = 0;
   };
 
   VrComposerView(std::unique_ptr<Callback> callback);
@@ -21,10 +21,8 @@
 
   void Initialize(ComposerView* composer_view);
 
-  void ReleaseFrame();
-
   // ComposerView::Observer
-  void OnNewFrame(const ComposerView::Frame& frame) override;
+  base::unique_fd OnNewFrame(const ComposerView::Frame& frame) override;
 
  private:
   ComposerView* composer_view_;
diff --git a/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp b/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp
index d7d0e5b..6a78c98 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp
+++ b/services/vr/vr_window_manager/composer/impl/vr_hwc.cpp
@@ -21,7 +21,6 @@
 
 #include <mutex>
 
-#include "sync_timeline.h"
 #include "vr_composer_client.h"
 
 using namespace android::hardware::graphics::common::V1_0;
@@ -48,6 +47,12 @@
   int32_t format = 0;
 
   GraphicBufferMapper& mapper = GraphicBufferMapper::get();
+  // Need to register |handle| otherwise we can't read its properties.
+  if (mapper.registerBuffer(handle) != OK) {
+    ALOGE("Failed to register buffer");
+    return nullptr;
+  }
+
   if (mapper.getDimensions(handle, &width, &height) ||
       mapper.getStride(handle, &stride) ||
       mapper.getFormat(handle, &format) ||
@@ -61,11 +66,13 @@
   // capability. Otherwise assume a count of 1.
   mapper.getLayerCount(handle, &layer_count);
 
+  // NOTE: Can't re-use |handle| since we don't own it.
   sp<GraphicBuffer> buffer = new GraphicBuffer(
       width, height, format, layer_count, producer_usage, consumer_usage,
       stride, native_handle_clone(handle), true);
+  // Need to register the cloned buffer otherwise it can't be used later on.
   if (mapper.registerBuffer(buffer.get()) != OK) {
-    ALOGE("Failed to register buffer");
+    ALOGE("Failed to register cloned buffer");
     return nullptr;
   }
 
@@ -78,8 +85,6 @@
 
 HwcDisplay::~HwcDisplay() {}
 
-bool HwcDisplay::Initialize() { return hwc_timeline_.Initialize(); }
-
 bool HwcDisplay::SetClientTarget(const native_handle_t* handle,
                                  base::unique_fd fence) {
   if (handle)
@@ -97,14 +102,14 @@
 
 HwcLayer* HwcDisplay::GetLayer(Layer id) {
   for (size_t i = 0; i < layers_.size(); ++i)
-    if (layers_[i].id == id) return &layers_[i];
+    if (layers_[i].info.id == id) return &layers_[i];
 
   return nullptr;
 }
 
 bool HwcDisplay::DestroyLayer(Layer id) {
   for (auto it = layers_.begin(); it != layers_.end(); ++it) {
-    if (it->id == id) {
+    if (it->info.id == id) {
       layers_.erase(it);
       return true;
     }
@@ -140,7 +145,7 @@
   for (size_t i = 0; i < layers_.size(); ++i) {
     if (i >= first_client_layer && i <= last_client_layer) {
       if (layers_[i].composition_type != IComposerClient::Composition::CLIENT) {
-        layer_ids->push_back(layers_[i].id);
+        layer_ids->push_back(layers_[i].info.id);
         types->push_back(IComposerClient::Composition::CLIENT);
         layers_[i].composition_type = IComposerClient::Composition::CLIENT;
       }
@@ -149,7 +154,7 @@
     }
 
     if (layers_[i].composition_type != IComposerClient::Composition::DEVICE) {
-      layer_ids->push_back(layers_[i].id);
+      layer_ids->push_back(layers_[i].info.id);
       types->push_back(IComposerClient::Composition::DEVICE);
       layers_[i].composition_type = IComposerClient::Composition::DEVICE;
     }
@@ -197,26 +202,18 @@
     return Error::BAD_LAYER;
   }
 
-  // Increment the time the fence is signalled every time we get the
-  // presentation frame. This ensures that calling ReleaseFrame() only affects
-  // the current frame.
-  fence_time_++;
   out_frames->swap(frame);
   return Error::NONE;
 }
 
-void HwcDisplay::GetReleaseFences(int* present_fence,
-                                  std::vector<Layer>* layer_ids,
-                                  std::vector<int>* fences) {
-  *present_fence = hwc_timeline_.CreateFence(fence_time_);
-  for (const auto& layer : layers_) {
-    layer_ids->push_back(layer.id);
-    fences->push_back(hwc_timeline_.CreateFence(fence_time_));
-  }
-}
+std::vector<Layer> HwcDisplay::UpdateLastFrameAndGetLastFrameLayers() {
+  std::vector<Layer> last_frame_layers;
+  last_frame_layers.swap(last_frame_layers_ids_);
 
-void HwcDisplay::ReleaseFrame() {
-  hwc_timeline_.IncrementTimeline();
+  for (const auto& layer : layers_)
+    last_frame_layers_ids_.push_back(layer.info.id);
+
+  return last_frame_layers;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -226,8 +223,6 @@
 
 VrHwc::~VrHwc() {}
 
-bool VrHwc::Initialize() { return display_.Initialize(); }
-
 bool VrHwc::hasCapability(Capability capability) const { return false; }
 
 void VrHwc::removeClient() {
@@ -262,7 +257,7 @@
   std::lock_guard<std::mutex> guard(mutex_);
 
   HwcLayer* layer = display_.CreateLayer();
-  *outLayer = layer->id;
+  *outLayer = layer->info.id;
   return Error::NONE;
 }
 
@@ -448,24 +443,33 @@
                             std::vector<Layer>* outLayers,
                             std::vector<int32_t>* outReleaseFences) {
   *outPresentFence = -1;
+  outLayers->clear();
+  outReleaseFences->clear();
+
   if (display != kDefaultDisplayId) {
     return Error::BAD_DISPLAY;
   }
 
   std::vector<ComposerView::ComposerLayer> frame;
-  {
-    std::lock_guard<std::mutex> guard(mutex_);
-    Error status = display_.GetFrame(&frame);
-    if (status != Error::NONE)
-      return status;
+  std::vector<Layer> last_frame_layers;
+  std::lock_guard<std::mutex> guard(mutex_);
+  Error status = display_.GetFrame(&frame);
+  if (status != Error::NONE)
+    return status;
 
-    display_.GetReleaseFences(outPresentFence, outLayers, outReleaseFences);
-  }
+  last_frame_layers = display_.UpdateLastFrameAndGetLastFrameLayers();
 
+  base::unique_fd fence;
   if (observer_)
-    observer_->OnNewFrame(frame);
-  else
-    ReleaseFrame();
+    fence = observer_->OnNewFrame(frame);
+
+  if (fence.get() < 0)
+    return Error::NONE;
+
+  *outPresentFence = dup(fence.get());
+  outLayers->swap(last_frame_layers);
+  for (size_t i = 0; i < outLayers->size(); ++i)
+    outReleaseFences->push_back(dup(fence.get()));
 
   return Error::NONE;
 }
@@ -661,11 +665,6 @@
     observer_ = nullptr;
 }
 
-void VrHwc::ReleaseFrame() {
-  std::lock_guard<std::mutex> guard(mutex_);
-  display_.ReleaseFrame();
-}
-
 ComposerView* GetComposerViewFromIComposer(
     hardware::graphics::composer::V2_1::IComposer* composer) {
   return static_cast<VrHwc*>(composer);
diff --git a/services/vr/vr_window_manager/composer/impl/vr_hwc.h b/services/vr/vr_window_manager/composer/impl/vr_hwc.h
index 9450097..df09687 100644
--- a/services/vr/vr_window_manager/composer/impl/vr_hwc.h
+++ b/services/vr/vr_window_manager/composer/impl/vr_hwc.h
@@ -16,6 +16,7 @@
 #ifndef VR_WINDOW_MANAGER_COMPOSER_IMPL_VR_HWC_H_
 #define VR_WINDOW_MANAGER_COMPOSER_IMPL_VR_HWC_H_
 
+#include <android-base/unique_fd.h>
 #include <android/hardware/graphics/composer/2.1/IComposer.h>
 #include <ComposerBase.h>
 #include <ui/Fence.h>
@@ -24,8 +25,6 @@
 
 #include <mutex>
 
-#include "sync_timeline.h"
-
 using namespace android::hardware::graphics::common::V1_0;
 using namespace android::hardware::graphics::composer::V2_1;
 
@@ -57,6 +56,7 @@
 
     // TODO(dnicoara): Add all layer properties. For now just the basics to get
     // it going.
+    Layer id;
     sp<GraphicBuffer> buffer;
     sp<Fence> fence;
     Recti display_frame;
@@ -75,25 +75,23 @@
 
     // Returns a list of layers that need to be shown together. Layers are
     // returned in z-order, with the lowest layer first.
-    virtual void OnNewFrame(const Frame& frame) = 0;
+    virtual base::unique_fd OnNewFrame(const Frame& frame) = 0;
   };
 
   virtual ~ComposerView() {}
 
   virtual void RegisterObserver(Observer* observer) = 0;
   virtual void UnregisterObserver(Observer* observer) = 0;
-
-  // Called to release the oldest frame received by the observer.
-  virtual void ReleaseFrame() = 0;
 };
 
 struct HwcLayer {
   using Composition =
       hardware::graphics::composer::V2_1::IComposerClient::Composition;
 
-  HwcLayer(Layer new_id) : id(new_id) {}
+  HwcLayer(Layer new_id) {
+    info.id = new_id;
+  }
 
-  Layer id;
   Composition composition_type;
   uint32_t z_order;
   ComposerView::ComposerLayer info;
@@ -104,8 +102,6 @@
   HwcDisplay();
   ~HwcDisplay();
 
-  bool Initialize();
-
   HwcLayer* CreateLayer();
   bool DestroyLayer(Layer id);
   HwcLayer* GetLayer(Layer id);
@@ -118,10 +114,7 @@
 
   Error GetFrame(std::vector<ComposerView::ComposerLayer>* out_frame);
 
-  void GetReleaseFences(int* present_fence, std::vector<Layer>* layer_ids,
-                        std::vector<int>* fences);
-
-  void ReleaseFrame();
+  std::vector<Layer> UpdateLastFrameAndGetLastFrameLayers();
 
  private:
   // The client target buffer and the associated fence.
@@ -132,19 +125,11 @@
   // List of currently active layers.
   std::vector<HwcLayer> layers_;
 
+  std::vector<Layer> last_frame_layers_ids_;
+
   // Layer ID generator.
   uint64_t layer_ids_ = 1;
 
-  // Creates software sync fences used to signal releasing frames.
-  SyncTimeline hwc_timeline_;
-
-  // Keeps track of the current fence time. Used in conjunction with
-  // |hwc_timeline_| to properly signal frame release times. Allows the observer
-  // to receive multiple presentation frames without calling ReleaseFrame() in
-  // between each presentation. When the observer is ready to release a frame
-  // only the oldest presentation frame is affected by the release.
-  int fence_time_ = 0;
-
   HwcDisplay(const HwcDisplay&) = delete;
   void operator=(const HwcDisplay&) = delete;
 };
@@ -154,8 +139,6 @@
   VrHwc();
   ~VrHwc() override;
 
-  bool Initialize();
-
   bool hasCapability(Capability capability) const;
 
   Error setLayerInfo(Display display, Layer layer, uint32_t type,
@@ -246,7 +229,6 @@
   // ComposerView:
   void RegisterObserver(Observer* observer) override;
   void UnregisterObserver(Observer* observer) override;
-  void ReleaseFrame() override;
 
  private:
   wp<VrComposerClient> client_;
diff --git a/services/vr/vr_window_manager/hwc_callback.cpp b/services/vr/vr_window_manager/hwc_callback.cpp
index b29d175..05ec64a 100644
--- a/services/vr/vr_window_manager/hwc_callback.cpp
+++ b/services/vr/vr_window_manager/hwc_callback.cpp
@@ -11,37 +11,6 @@
 
 namespace {
 
-sp<GraphicBuffer> GetBufferFromHandle(const native_handle_t* handle) {
-  GraphicBufferMapper& mapper = GraphicBufferMapper::get();
-  if (mapper.registerBuffer(handle) != OK) {
-    ALOGE("Failed to register buffer");
-    return nullptr;
-  }
-
-  uint32_t width = 0, height = 0, stride = 0, layer_count = 1;
-  uint64_t producer_usage = 0, consumer_usage = 0;
-  int32_t format = 0;
-
-  if (mapper.getDimensions(handle, &width, &height) ||
-      mapper.getStride(handle, &stride) ||
-      mapper.getFormat(handle, &format) ||
-      mapper.getProducerUsage(handle, &producer_usage) ||
-      mapper.getConsumerUsage(handle, &consumer_usage)) {
-    ALOGE("Failed to read handle properties");
-    return nullptr;
-  }
-
-  // This will only succeed if gralloc has GRALLOC1_CAPABILITY_LAYERED_BUFFERS
-  // capability. Otherwise assume a count of 1.
-  mapper.getLayerCount(handle, &layer_count);
-
-  sp<GraphicBuffer> buffer = new GraphicBuffer(
-      width, height, format, layer_count, producer_usage, consumer_usage,
-      stride, native_handle_clone(handle), true);
-
-  return buffer;
-}
-
 HwcCallback::FrameStatus GetFrameStatus(const HwcCallback::Frame& frame) {
   for (const auto& layer : frame.layers()) {
     // If there is no fence it means the buffer is already finished.
@@ -69,7 +38,7 @@
 HwcCallback::~HwcCallback() {
 }
 
-void HwcCallback::OnNewFrame(const ComposerView::Frame& frame) {
+base::unique_fd HwcCallback::OnNewFrame(const ComposerView::Frame& frame) {
   std::vector<HwcLayer> hwc_frame(frame.size());
   for (size_t i = 0; i < frame.size(); ++i) {
     hwc_frame[i] = HwcLayer{
@@ -84,7 +53,8 @@
     };
   }
 
-  client_->OnFrame(std::make_unique<Frame>(std::move(hwc_frame)));
+  return client_->OnFrame(
+      std::make_unique<Frame>(std::move(hwc_frame)));
 }
 
 HwcCallback::Frame::Frame(std::vector<HwcLayer>&& layers)
diff --git a/services/vr/vr_window_manager/hwc_callback.h b/services/vr/vr_window_manager/hwc_callback.h
index d4d6e66..bcfeb97 100644
--- a/services/vr/vr_window_manager/hwc_callback.h
+++ b/services/vr/vr_window_manager/hwc_callback.h
@@ -6,6 +6,7 @@
 #include <mutex>
 #include <vector>
 
+#include <android-base/unique_fd.h>
 #include <impl/vr_composer_view.h>
 #include <impl/vr_hwc.h>
 
@@ -79,14 +80,15 @@
   class Client {
    public:
     virtual ~Client() {}
-    virtual void OnFrame(std::unique_ptr<Frame>) = 0;
+    virtual base::unique_fd OnFrame(std::unique_ptr<Frame>) = 0;
   };
 
   explicit HwcCallback(Client* client);
   ~HwcCallback() override;
 
  private:
-  void OnNewFrame(const ComposerView::Frame& frame) override;
+  base::unique_fd OnNewFrame(const ComposerView::Frame& frame) override;
+
   Client *client_;
 
   HwcCallback(const HwcCallback&) = delete;
diff --git a/services/vr/vr_window_manager/shell_view.cpp b/services/vr/vr_window_manager/shell_view.cpp
index 84b8467..9d0aaad 100644
--- a/services/vr/vr_window_manager/shell_view.cpp
+++ b/services/vr/vr_window_manager/shell_view.cpp
@@ -319,10 +319,6 @@
         frame.frame->Finish() == HwcCallback::FrameStatus::kFinished) {
       current_frame_ = std::move(frame);
       pending_frames_.pop_front();
-
-      for(int i = 0; i < skipped_frame_count_ + 1; i++)
-        surface_flinger_view_->ReleaseFrame();
-      skipped_frame_count_ = 0;
     }
   }
 }
@@ -392,7 +388,7 @@
   return true;
 }
 
-void ShellView::OnFrame(std::unique_ptr<HwcCallback::Frame> frame) {
+base::unique_fd ShellView::OnFrame(std::unique_ptr<HwcCallback::Frame> frame) {
   ViewMode visibility =
       CalculateVisibilityFromLayerConfig(*frame.get(), current_vr_app_);
 
@@ -409,7 +405,6 @@
   pending_frames_.emplace_back(std::move(frame), visibility);
 
   if (pending_frames_.size() > kMaximumPendingFrames) {
-    skipped_frame_count_++;
     pending_frames_.pop_front();
   }
 
@@ -427,6 +422,8 @@
     QueueTask(MainThreadTask::EnteringVrMode);
     QueueTask(MainThreadTask::Show);
   }
+
+  return base::unique_fd(dup(release_fence_.get()));
 }
 
 bool ShellView::IsHit(const vec3& view_location, const vec3& view_direction,
@@ -518,6 +515,20 @@
 
     DrawIme();
   }
+
+  EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+  EGLSyncKHR sync = eglCreateSyncKHR(display, EGL_SYNC_NATIVE_FENCE_ANDROID,
+                                     nullptr);
+  if (sync != EGL_NO_SYNC_KHR) {
+    // Need to flush in order to get the fence FD.
+    glFlush();
+    base::unique_fd fence(eglDupNativeFenceFDANDROID(display, sync));
+    eglDestroySyncKHR(display, sync);
+    UpdateReleaseFence(std::move(fence));
+  } else {
+    ALOGE("Failed to create sync fence");
+    UpdateReleaseFence(base::unique_fd());
+  }
 }
 
 void ShellView::DrawIme() {
@@ -744,5 +755,10 @@
   return true;
 }
 
+void ShellView::UpdateReleaseFence(base::unique_fd fence) {
+  std::lock_guard<std::mutex> guard(pending_frame_mutex_);
+  release_fence_ = std::move(fence);
+}
+
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/vr_window_manager/shell_view.h b/services/vr/vr_window_manager/shell_view.h
index 39b5451..1e061bb 100644
--- a/services/vr/vr_window_manager/shell_view.h
+++ b/services/vr/vr_window_manager/shell_view.h
@@ -69,16 +69,15 @@
 
   void AdvanceFrame();
 
+  void UpdateReleaseFence(base::unique_fd fence);
+
   // HwcCallback::Client:
-  void OnFrame(std::unique_ptr<HwcCallback::Frame> frame) override;
+  base::unique_fd OnFrame(std::unique_ptr<HwcCallback::Frame> frame) override;
 
   std::unique_ptr<ShaderProgram> program_;
   std::unique_ptr<ShaderProgram> overlay_program_;
   std::unique_ptr<ShaderProgram> controller_program_;
 
-  // This starts at -1 so we don't call ReleaseFrame for the first frame.
-  int skipped_frame_count_ = -1;
-
   uint32_t current_vr_app_;
 
   // Used to center the scene when the shell becomes visible.
@@ -126,6 +125,8 @@
 
   mat4 controller_translate_;
 
+  base::unique_fd release_fence_;
+
   ShellView(const ShellView&) = delete;
   void operator=(const ShellView&) = delete;
 };
diff --git a/services/vr/vr_window_manager/surface_flinger_view.cpp b/services/vr/vr_window_manager/surface_flinger_view.cpp
index d42d3ff..63bc143 100644
--- a/services/vr/vr_window_manager/surface_flinger_view.cpp
+++ b/services/vr/vr_window_manager/surface_flinger_view.cpp
@@ -84,9 +84,5 @@
   return true;
 }
 
-void SurfaceFlingerView::ReleaseFrame() {
-  vr_composer_view_->ReleaseFrame();
-}
-
 }  // namespace dvr
 }  // namespace android
diff --git a/services/vr/vr_window_manager/surface_flinger_view.h b/services/vr/vr_window_manager/surface_flinger_view.h
index 9c16192..7370299 100644
--- a/services/vr/vr_window_manager/surface_flinger_view.h
+++ b/services/vr/vr_window_manager/surface_flinger_view.h
@@ -36,8 +36,6 @@
                    TextureLayer* ime_layer, bool debug,
                    bool skip_first_layer) const;
 
-  void ReleaseFrame();
-
  private:
   sp<IComposer> vr_hwcomposer_;
   std::unique_ptr<VrComposerView> vr_composer_view_;
diff --git a/vulkan/api/platform.api b/vulkan/api/platform.api
index fb8e3ce..b82cbb4 100644
--- a/vulkan/api/platform.api
+++ b/vulkan/api/platform.api
@@ -49,4 +49,5 @@
 @internal type void* HINSTANCE
 @internal type void* HWND
 @internal type void* HANDLE
+@internal type u32   DWORD
 @internal class SECURITY_ATTRIBUTES {}
diff --git a/vulkan/api/vulkan.api b/vulkan/api/vulkan.api
index a89fed9..cfeeeef 100644
--- a/vulkan/api/vulkan.api
+++ b/vulkan/api/vulkan.api
@@ -45,116 +45,154 @@
 // API keyword, but needs special handling by some templates
 define NULL_HANDLE 0
 
+// 1
 @extension("VK_KHR_surface") define VK_KHR_SURFACE_SPEC_VERSION                 25
 @extension("VK_KHR_surface") define VK_KHR_SURFACE_EXTENSION_NAME               "VK_KHR_surface"
 
+// 2
 @extension("VK_KHR_swapchain") define VK_KHR_SWAPCHAIN_SPEC_VERSION             68
 @extension("VK_KHR_swapchain") define VK_KHR_SWAPCHAIN_EXTENSION_NAME           "VK_KHR_swapchain"
 
+// 3
 @extension("VK_KHR_display") define VK_KHR_DISPLAY_SPEC_VERSION                 21
 @extension("VK_KHR_display") define VK_KHR_DISPLAY_EXTENSION_NAME               "VK_KHR_display"
 
+// 4
 @extension("VK_KHR_display_swapchain") define VK_KHR_DISPLAY_SWAPCHAIN_SPEC_VERSION     9
 @extension("VK_KHR_display_swapchain") define VK_KHR_DISPLAY_SWAPCHAIN_EXTENSION_NAME   "VK_KHR_display_swapchain"
 
+// 5
 @extension("VK_KHR_xlib_surface") define VK_KHR_XLIB_SURFACE_SPEC_VERSION       6
 @extension("VK_KHR_xlib_surface") define VK_KHR_XLIB_SURFACE_NAME               "VK_KHR_xlib_surface"
 
+// 6
 @extension("VK_KHR_xcb_surface") define VK_KHR_XCB_SURFACE_SPEC_VERSION         6
 @extension("VK_KHR_xcb_surface") define VK_KHR_XCB_SURFACE_NAME                 "VK_KHR_xcb_surface"
 
+// 7
 @extension("VK_KHR_wayland_surface") define VK_KHR_WAYLAND_SURFACE_SPEC_VERSION 5
 @extension("VK_KHR_wayland_surface") define VK_KHR_WAYLAND_SURFACE_NAME         "VK_KHR_wayland_surface"
 
+// 8
 @extension("VK_KHR_mir_surface") define VK_KHR_MIR_SURFACE_SPEC_VERSION         4
 @extension("VK_KHR_mir_surface") define VK_KHR_MIR_SURFACE_NAME                 "VK_KHR_mir_surface"
 
+// 9
 @extension("VK_KHR_android_surface") define VK_KHR_ANDROID_SURFACE_SPEC_VERSION 6
 @extension("VK_KHR_android_surface") define VK_KHR_ANDROID_SURFACE_NAME         "VK_KHR_android_surface"
 
+// 10
 @extension("VK_KHR_win32_surface") define VK_KHR_WIN32_SURFACE_SPEC_VERSION     5
 @extension("VK_KHR_win32_surface") define VK_KHR_WIN32_SURFACE_NAME             "VK_KHR_win32_surface"
 
-@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION 1
-@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_NAME         "VK_KHR_incremental_present"
-
-@extension("VK_ANDROID_native_buffer") define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     6
+// 11
+@extension("VK_ANDROID_native_buffer") define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     7
 @extension("VK_ANDROID_native_buffer") define VK_ANDROID_NATIVE_BUFFER_NAME             "VK_ANDROID_native_buffer"
 
-@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION     1
-@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_NAME             "VK_GOOGLE_display_timing"
-
+// 12
 @extension("VK_EXT_debug_report") define VK_EXT_DEBUG_REPORT_SPEC_VERSION       4
 @extension("VK_EXT_debug_report") define VK_EXT_DEBUG_REPORT_NAME               "VK_EXT_debug_report"
 
+// 13
 @extension("VK_NV_glsl_shader") define VK_NV_GLSL_SHADER_SPEC_VERSION           1
 @extension("VK_NV_glsl_shader") define VK_NV_GLSL_SHADER_NAME                   "VK_NV_glsl_shader"
 
+// 15
 @extension("VK_KHR_sampler_mirror_clamp_to_edge") define VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_SPEC_VERSION   1
 @extension("VK_KHR_sampler_mirror_clamp_to_edge") define VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_NAME           "VK_KHR_sampler_mirror_clamp_to_edge"
 
+// 16
 @extension("VK_IMG_filter_cubic") define VK_IMG_FILTER_CUBIC_SPEC_VERSION       1
 @extension("VK_IMG_filter_cubic") define VK_IMG_FILTER_CUBIC_NAME               "VK_IMG_filter_cubic"
 
+// 19
 @extension("VK_AMD_rasterization_order") define VK_AMD_RASTERIZATION_ORDER_SPEC_VERSION   1
 @extension("VK_AMD_rasterization_order") define VK_AMD_RASTERIZATION_ORDER_NAME           "VK_AMD_rasterization_order"
 
+// 21
 @extension("VK_AMD_shader_trinary_minmax") define VK_AMD_SHADER_TRINARY_MINMAX_SPEC_VERSION 1
 @extension("VK_AMD_shader_trinary_minmax") define VK_AMD_SHADER_TRINARY_MINMAX_EXTENSION_NAME "VK_AMD_shader_trinary_minmax"
 
+// 22
 @extension("VK_AMD_shader_explicit_vertex_parameter") define VK_AMD_SHADER_EXPLICIT_VERTEX_PARAMETER_SPEC_VERSION 1
 @extension("VK_AMD_shader_explicit_vertex_parameter") define VK_AMD_SHADER_EXPLICIT_VERTEX_PARAMETER_EXTENSION_NAME "VK_AMD_shader_explicit_vertex_parameter"
 
+// 23
 @extension("VK_EXT_debug_marker") define VK_EXT_DEBUG_MARKER_SPEC_VERSION       3
 @extension("VK_EXT_debug_marker") define VK_EXT_DEBUG_MARKER_NAME               "VK_EXT_debug_marker"
 
+// 26
 @extension("VK_AMD_gcn_shader") define VK_AMD_GCN_SHADER_SPEC_VERSION 1
 @extension("VK_AMD_gcn_shader") define VK_AMD_GCN_SHADER_EXTENSION_NAME "VK_AMD_gcn_shader"
 
+// 27
 @extension("VK_NV_dedicated_allocation") define VK_NV_DEDICATED_ALLOCATION_SPEC_VERSION 1
 @extension("VK_NV_dedicated_allocation") define VK_NV_DEDICATED_ALLOCATION_EXTENSION_NAME "VK_NV_dedicated_allocation"
 
-@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_SPEC_VERSION 1
-@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME "VK_KHR_get_physical_device_properties2"
-
-@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_SPEC_VERSION 1
-@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_EXTENSION_NAME "VK_AMD_draw_indirect_count"
-
-@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION 1
-@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME "VK_AMD_negative_viewport_height"
-
-@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_SPEC_VERSION 1
-@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_EXTENSION_NAME "VK_AMD_gpu_shader_half_float"
-
-@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_SPEC_VERSION 1
-@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_EXTENSION_NAME "VK_AMD_shader_ballot"
-
+// 28
 @extension("VK_IMG_format_pvrtc") define VK_IMG_FORMAT_PVRTC_SPEC_VERSION 1
 @extension("VK_IMG_format_pvrtc") define VK_IMG_FORMAT_PVRTC_EXTENSION_NAME "VK_IMG_format_pvrtc"
 
+// 34
+@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_SPEC_VERSION 1
+@extension("VK_AMD_draw_indirect_count") define VK_AMD_DRAW_INDIRECT_COUNT_EXTENSION_NAME "VK_AMD_draw_indirect_count"
+
+// 36
+@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION 1
+@extension("VK_AMD_negative_viewport_height") define VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME "VK_AMD_negative_viewport_height"
+
+// 37
+@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_SPEC_VERSION 1
+@extension("VK_AMD_gpu_shader_half_float") define VK_AMD_GPU_SHADER_HALF_FLOAT_EXTENSION_NAME "VK_AMD_gpu_shader_half_float"
+
+// 38
+@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_SPEC_VERSION 1
+@extension("VK_AMD_shader_ballot") define VK_AMD_SHADER_BALLOT_EXTENSION_NAME "VK_AMD_shader_ballot"
+
+// 56
 @extension("VK_NV_external_memory_capabilities") define VK_NV_EXTERNAL_MEMORY_CAPABILITIES_SPEC_VERSION 1
 @extension("VK_NV_external_memory_capabilities") define VK_NV_EXTERNAL_MEMORY_CAPABILITIES_EXTENSION_NAME "VK_NV_external_memory_capabilities"
 
+// 57
 @extension("VK_NV_external_memory") define VK_NV_EXTERNAL_MEMORY_SPEC_VERSION 1
 @extension("VK_NV_external_memory") define VK_NV_EXTERNAL_MEMORY_EXTENSION_NAME "VK_NV_external_memory"
 
+// 58
 @extension("VK_NV_external_memory_win32") define VK_NV_EXTERNAL_MEMORY_WIN32_SPEC_VERSION 1
 @extension("VK_NV_external_memory_win32") define VK_NV_EXTERNAL_MEMORY_WIN32_EXTENSION_NAME "VK_NV_external_memory_win32"
 
+// 59
 @extension("VK_NV_win32_keyed_mutex") define VK_NV_WIN32_KEYED_MUTEX_SPEC_VERSION 1
 @extension("VK_NV_win32_keyed_mutex") define VK_NV_WIN32_KEYED_MUTEX_EXTENSION_NAME "VK_NV_win32_keyed_mutex"
 
+// 60
+@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_SPEC_VERSION 1
+@extension("VK_KHR_get_physical_device_properties2") define VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME "VK_KHR_get_physical_device_properties2"
+
+// 62
 @extension("VK_EXT_validation_flags") define VK_EXT_VALIDATION_FLAGS_SPEC_VERSION 1
 @extension("VK_EXT_validation_flags") define VK_EXT_VALIDATION_FLAGS_EXTENSION_NAME "VK_EXT_validation_flags"
 
+// 85
+@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION 1
+@extension("VK_KHR_incremental_present") define VK_KHR_INCREMENTAL_PRESENT_NAME "VK_KHR_incremental_present"
+
+// 87
 @extension("VK_NVX_device_generated_commands") define VK_NVX_DEVICE_GENERATED_COMMANDS_SPEC_VERSION 1
 @extension("VK_NVX_device_generated_commands") define VK_NVX_DEVICE_GENERATED_COMMANDS_EXTENSION_NAME "VK_NVX_device_generated_commands"
 
+// 93
+@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION 1
+@extension("VK_GOOGLE_display_timing") define VK_GOOGLE_DISPLAY_TIMING_NAME "VK_GOOGLE_display_timing"
+
+// 106
+@extension("VK_EXT_hdr_metadata") define VK_EXT_HDR_METADATA_SPEC_VERSION 1
+@extension("VK_EXT_hdr_metadata") define VK_EXT_HDR_METADATA_EXTENSION_NAME "VK_EXT_hdr_metadata"
+
+// 112
 @extension("VK_KHR_shared_presentable_image") define VK_KHR_SHARED_PRESENTABLE_IMAGE_SPEC_VERSION 1
 @extension("VK_KHR_shared_presentable_image") define VK_KHR_SHARED_PRESENTABLE_IMAGE_EXTENSION_NAME "VK_KHR_shared_presentable_image"
 
-
-
 /////////////
 //  Types  //
 /////////////
@@ -650,28 +688,14 @@
     VK_FORMAT_ASTC_12x12_SRGB_BLOCK                         = 184,
 
     //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG = 1000054000,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG = 1000054001,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG = 1000054002,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG = 1000054003,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG = 1000054004,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG = 1000054005,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG = 1000054006,
-
-    //@extension("VK_IMG_format_pvrtc")
-    VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG = 1000054007,
+    VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG                   = 1000054000,
+    VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG                   = 1000054001,
+    VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG                   = 1000054002,
+    VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG                   = 1000054003,
+    VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG                    = 1000054004,
+    VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG                    = 1000054005,
+    VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG                    = 1000054006,
+    VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG                    = 1000054007,
 }
 
 /// Structure type enumerant
@@ -761,6 +785,7 @@
     //@extension("VK_ANDROID_native_buffer")
     VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID                     = 1000010000,
     VK_STRUCTURE_TYPE_SWAPCHAIN_IMAGE_CREATE_INFO_ANDROID       = 1000010001,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID = 1000010002,
 
     //@extension("VK_GOOGLE_display_timing")
     VK_STRUCTURE_TYPE_PRESENT_TIMES_INFO_GOOGLE                 = 1000092000,
@@ -773,87 +798,49 @@
 
     //@extension("VK_EXT_debug_marker")
     VK_STRUCTURE_TYPE_DEBUG_MARKER_OBJECT_NAME_INFO_EXT         = 1000022000,
-
-    //@extension("VK_EXT_debug_marker")
     VK_STRUCTURE_TYPE_DEBUG_MARKER_OBJECT_TAG_INFO_EXT          = 1000022001,
-
-    //@extension("VK_EXT_debug_marker")
     VK_STRUCTURE_TYPE_DEBUG_MARKER_MARKER_INFO_EXT              = 1000022002,
 
     //@extension("VK_NV_dedicated_allocation")
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_IMAGE_CREATE_INFO_NV = 1000026000,
-
-    //@extension("VK_NV_dedicated_allocation")
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_BUFFER_CREATE_INFO_NV = 1000026001,
-
-    //@extension("VK_NV_dedicated_allocation")
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_MEMORY_ALLOCATE_INFO_NV = 1000026002,
 
     //@extension("VK_NV_external_memory")
-    VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMAGE_CREATE_INFO_NV = 1000056000,
-
-    //@extension("VK_NV_external_memory")
-    VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_NV = 1000056001,
+    VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMAGE_CREATE_INFO_NV      = 1000056000,
+    VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_NV            = 1000056001,
 
     //@extension("VK_NV_external_memory_win32")
-    VK_STRUCTURE_TYPE_IMPORT_MEMORY_WIN32_HANDLE_INFO_NV = 1000057000,
-
-    //@extension("VK_NV_external_memory_win32")
-    VK_STRUCTURE_TYPE_EXPORT_MEMORY_WIN32_HANDLE_INFO_NV = 1000057001,
+    VK_STRUCTURE_TYPE_IMPORT_MEMORY_WIN32_HANDLE_INFO_NV        = 1000057000,
+    VK_STRUCTURE_TYPE_EXPORT_MEMORY_WIN32_HANDLE_INFO_NV        = 1000057001,
 
     //@extension("VK_NV_win32_keyed_mutex")
     VK_STRUCTURE_TYPE_WIN32_KEYED_MUTEX_ACQUIRE_RELEASE_INFO_NV = 1000058000,
 
     //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR = 1000059000,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR = 1000059001,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_FORMAT_PROPERTIES_2_KHR = 1000059002,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_IMAGE_FORMAT_PROPERTIES_2_KHR = 1000059003,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_FORMAT_INFO_2_KHR = 1000059004,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_QUEUE_FAMILY_PROPERTIES_2_KHR = 1000059005,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_PROPERTIES_2_KHR = 1000059006,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
-    VK_STRUCTURE_TYPE_SPARSE_IMAGE_FORMAT_PROPERTIES_2_KHR = 1000059007,
-
-    //@extension("VK_KHR_get_physical_device_properties2")
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR            = 1000059000,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR          = 1000059001,
+    VK_STRUCTURE_TYPE_FORMAT_PROPERTIES_2_KHR                   = 1000059002,
+    VK_STRUCTURE_TYPE_IMAGE_FORMAT_PROPERTIES_2_KHR             = 1000059003,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_FORMAT_INFO_2_KHR   = 1000059004,
+    VK_STRUCTURE_TYPE_QUEUE_FAMILY_PROPERTIES_2_KHR             = 1000059005,
+    VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_PROPERTIES_2_KHR   = 1000059006,
+    VK_STRUCTURE_TYPE_SPARSE_IMAGE_FORMAT_PROPERTIES_2_KHR      = 1000059007,
     VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SPARSE_IMAGE_FORMAT_INFO_2_KHR = 1000059008,
 
     //@extension("VK_EXT_validation_flags")
-    VK_STRUCTURE_TYPE_VALIDATION_FLAGS_EXT = 1000061000,
+    VK_STRUCTURE_TYPE_VALIDATION_FLAGS_EXT                      = 1000061000,
 
     //@extension("VK_KHR_incremental_present")
-    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR = 1000084000,
+    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR                       = 1000084000,
 
     //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_OBJECT_TABLE_CREATE_INFO_NVX = 1000086000,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_INDIRECT_COMMANDS_LAYOUT_CREATE_INFO_NVX = 1000086001,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_CMD_PROCESS_COMMANDS_INFO_NVX = 1000086002,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_CMD_RESERVE_SPACE_FOR_COMMANDS_INFO_NVX = 1000086003,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_LIMITS_NVX = 1000086004,
-
-    //@extension("VK_NVX_device_generated_commands")
-    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_FEATURES_NVX = 1000086005,
+    VK_STRUCTURE_TYPE_OBJECT_TABLE_CREATE_INFO_NVX              = 1000086000,
+    VK_STRUCTURE_TYPE_INDIRECT_COMMANDS_LAYOUT_CREATE_INFO_NVX  = 1000086001,
+    VK_STRUCTURE_TYPE_CMD_PROCESS_COMMANDS_INFO_NVX             = 1000086002,
+    VK_STRUCTURE_TYPE_CMD_RESERVE_SPACE_FOR_COMMANDS_INFO_NVX   = 1000086003,
+    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_LIMITS_NVX      = 1000086004,
+    VK_STRUCTURE_TYPE_DEVICE_GENERATED_COMMANDS_FEATURES_NVX    = 1000086005,
 }
 
 enum VkSubpassContents {
@@ -939,7 +926,7 @@
 @extension("VK_KHR_surface")
 enum VkColorSpaceKHR {
     VK_COLORSPACE_SRGB_NONLINEAR_KHR                        = 0x00000000,
-    VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT 	 	    = 1000104001,
+    VK_COLOR_SPACE_DISPLAY_P3_LINEAR_EXT                    = 1000104001,
     VK_COLOR_SPACE_DISPLAY_P3_NONLINEAR_EXT                 = 1000104002,
     VK_COLOR_SPACE_SCRGB_LINEAR_EXT                         = 1000104003,
     VK_COLOR_SPACE_SCRGB_NONLINEAR_EXT                      = 1000104004,
@@ -1009,23 +996,23 @@
 
 @extension("VK_NVX_device_generated_commands")
 enum VkIndirectCommandsTokenTypeNVX {
-    VK_INDIRECT_COMMANDS_TOKEN_PIPELINE_NVX = 0,
-    VK_INDIRECT_COMMANDS_TOKEN_DESCRIPTOR_SET_NVX = 1,
-    VK_INDIRECT_COMMANDS_TOKEN_INDEX_BUFFER_NVX = 2,
-    VK_INDIRECT_COMMANDS_TOKEN_VERTEX_BUFFER_NVX = 3,
-    VK_INDIRECT_COMMANDS_TOKEN_PUSH_CONSTANT_NVX = 4,
-    VK_INDIRECT_COMMANDS_TOKEN_DRAW_INDEXED_NVX = 5,
-    VK_INDIRECT_COMMANDS_TOKEN_DRAW_NVX = 6,
-    VK_INDIRECT_COMMANDS_TOKEN_DISPATCH_NVX = 7,
+    VK_INDIRECT_COMMANDS_TOKEN_PIPELINE_NVX                 = 0,
+    VK_INDIRECT_COMMANDS_TOKEN_DESCRIPTOR_SET_NVX           = 1,
+    VK_INDIRECT_COMMANDS_TOKEN_INDEX_BUFFER_NVX             = 2,
+    VK_INDIRECT_COMMANDS_TOKEN_VERTEX_BUFFER_NVX            = 3,
+    VK_INDIRECT_COMMANDS_TOKEN_PUSH_CONSTANT_NVX            = 4,
+    VK_INDIRECT_COMMANDS_TOKEN_DRAW_INDEXED_NVX             = 5,
+    VK_INDIRECT_COMMANDS_TOKEN_DRAW_NVX                     = 6,
+    VK_INDIRECT_COMMANDS_TOKEN_DISPATCH_NVX                 = 7,
 }
 
 @extension("VK_NVX_device_generated_commands")
 enum VkObjectEntryTypeNVX {
-    VK_OBJECT_ENTRY_DESCRIPTOR_SET_NVX = 0,
-    VK_OBJECT_ENTRY_PIPELINE_NVX = 1,
-    VK_OBJECT_ENTRY_INDEX_BUFFER_NVX = 2,
-    VK_OBJECT_ENTRY_VERTEX_BUFFER_NVX = 3,
-    VK_OBJECT_ENTRY_PUSH_CONSTANT_NVX = 4,
+    VK_OBJECT_ENTRY_DESCRIPTOR_SET_NVX                      = 0,
+    VK_OBJECT_ENTRY_PIPELINE_NVX                            = 1,
+    VK_OBJECT_ENTRY_INDEX_BUFFER_NVX                        = 2,
+    VK_OBJECT_ENTRY_VERTEX_BUFFER_NVX                       = 3,
+    VK_OBJECT_ENTRY_PUSH_CONSTANT_NVX                       = 4,
 }
 
 /////////////////
@@ -1080,8 +1067,6 @@
 
     //@extension("VK_NVX_device_generated_commands")
     VK_ACCESS_COMMAND_PROCESS_READ_BIT_NVX                  = 0x00020000,
-
-    //@extension("VK_NVX_device_generated_commands")
     VK_ACCESS_COMMAND_PROCESS_WRITE_BIT_NVX                 = 0x00040000,
 }
 
@@ -1568,6 +1553,13 @@
 //bitfield VkWin32SurfaceCreateFlagBitsKHR {
 //}
 
+@extension("VK_ANDROID_native_buffer")
+type VkFlags VkSwapchainImageUsageFlagsANDROID
+@extension("VK_ANDROID_native_buffer")
+bitfield VkSwapchainImageUsageFlagBitsANDROID {
+    VK_SWAPCHAIN_IMAGE_USAGE_FLAGS_SHARED_BIT_ANDROID = 0x00000001,
+}
+
 @extension("VK_EXT_debug_report")
 type VkFlags VkDebugReportFlagsEXT
 @extension("VK_EXT_debug_report")
@@ -1579,51 +1571,43 @@
     VK_DEBUG_REPORT_DEBUG_BIT_EXT                           = 0x00000010,
 }
 
-@extension("VK_ANDROID_native_buffer")
-type VkFlags VkSwapchainImageUsageFlagsANDROID
-@extension("VK_ANDROID_native_buffer")
-bitfield VkSwapchainImageUsageFlagBitsANDROID {
-    VK_SWAPCHAIN_IMAGE_USAGE_FLAGS_SHARED_BIT_ANDROID = 0x00000001,
-}
-
 @extension("VK_NV_external_memory_capabilities")
 type VkFlags VkExternalMemoryHandleTypeFlagsNV
 @extension("VK_NV_external_memory_capabilities")
 bitfield VkExternalMemoryHandleTypeFlagBitsNV {
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_NV = 0x00000001,
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_KMT_BIT_NV = 0x00000002,
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_BIT_NV = 0x00000004,
-    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_KMT_BIT_NV = 0x00000008,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_BIT_NV      = 0x00000001,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_WIN32_KMT_BIT_NV  = 0x00000002,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_BIT_NV       = 0x00000004,
+    VK_EXTERNAL_MEMORY_HANDLE_TYPE_D3D11_IMAGE_KMT_BIT_NV   = 0x00000008,
 }
 
 @extension("VK_NV_external_memory_capabilities")
 type VkFlags VkExternalMemoryFeatureFlagsNV
 @extension("VK_NV_external_memory_capabilities")
 bitfield VkExternalMemoryFeatureFlagBitsNV {
-    VK_EXTERNAL_MEMORY_FEATURE_DEDICATED_ONLY_BIT_NV = 0x00000001,
-    VK_EXTERNAL_MEMORY_FEATURE_EXPORTABLE_BIT_NV = 0x00000002,
-    VK_EXTERNAL_MEMORY_FEATURE_IMPORTABLE_BIT_NV = 0x00000004,
+    VK_EXTERNAL_MEMORY_FEATURE_DEDICATED_ONLY_BIT_NV        = 0x00000001,
+    VK_EXTERNAL_MEMORY_FEATURE_EXPORTABLE_BIT_NV            = 0x00000002,
+    VK_EXTERNAL_MEMORY_FEATURE_IMPORTABLE_BIT_NV            = 0x00000004,
 }
 
 @extension("VK_NVX_device_generated_commands")
 type VkFlags VkIndirectCommandsLayoutUsageFlagsNVX
 @extension("VK_NVX_device_generated_commands")
 bitfield VkIndirectCommandsLayoutUsageFlagBitsNVX {
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_UNORDERED_SEQUENCES_BIT_NVX = 0x00000001,
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_SPARSE_SEQUENCES_BIT_NVX = 0x00000002,
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EMPTY_EXECUTIONS_BIT_NVX = 0x00000004,
-    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_INDEXED_SEQUENCES_BIT_NVX = 0x00000008,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_UNORDERED_SEQUENCES_BIT_NVX   = 0x00000001,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_SPARSE_SEQUENCES_BIT_NVX      = 0x00000002,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_EMPTY_EXECUTIONS_BIT_NVX      = 0x00000004,
+    VK_INDIRECT_COMMANDS_LAYOUT_USAGE_INDEXED_SEQUENCES_BIT_NVX     = 0x00000008,
 }
 
 @extension("VK_NVX_device_generated_commands")
 type VkFlags VkObjectEntryUsageFlagsNVX
 @extension("VK_NVX_device_generated_commands")
 bitfield VkObjectEntryUsageFlagBitsNVX {
-    VK_OBJECT_ENTRY_USAGE_GRAPHICS_BIT_NVX = 0x00000001,
-    VK_OBJECT_ENTRY_USAGE_COMPUTE_BIT_NVX = 0x00000002,
+    VK_OBJECT_ENTRY_USAGE_GRAPHICS_BIT_NVX                  = 0x00000001,
+    VK_OBJECT_ENTRY_USAGE_COMPUTE_BIT_NVX                   = 0x00000002,
 }
 
-
 //////////////////
 //  Structures  //
 //////////////////
@@ -2931,6 +2915,13 @@
     VkSwapchainImageUsageFlagsANDROID           flags
 }
 
+@extension("VK_ANDROID_native_buffer")
+class VkPhysicalDevicePresentationPropertiesANDROID {
+    VkStructureType                             sType
+    void*                                       pNext
+    VkBool32                                    sharedImage
+}
+
 @extension("VK_GOOGLE_display_timing")
 class VkRefreshCycleDurationGOOGLE {
     u64                                         minRefreshDuration
@@ -3026,6 +3017,57 @@
     VkBuffer                                    buffer
 }
 
+@extension("VK_NV_external_memory_capabilities")
+class VkExternalImageFormatPropertiesNV {
+    VkImageFormatProperties                     imageFormatProperties
+    VkExternalMemoryFeatureFlagsNV              externalMemoryFeatures
+    VkExternalMemoryHandleTypeFlagsNV           exportFromImportedHandleTypes
+    VkExternalMemoryHandleTypeFlagsNV           compatibleHandleTypes
+}
+
+@extension("VK_NV_external_memory")
+class VkExternalMemoryImageCreateInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    VkExternalMemoryHandleTypeFlagsNV           handleTypes
+}
+
+@extension("VK_NV_external_memory")
+class VkExportMemoryAllocateInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    VkExternalMemoryHandleTypeFlagsNV           handleTypes
+}
+
+@extension("VK_NV_external_memory_win32")
+class VkImportMemoryWin32HandleInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    VkExternalMemoryHandleTypeFlagsNV           handleType
+    platform.HANDLE                             handle
+}
+
+@extension("VK_NV_external_memory_win32")
+class VkExportMemoryWin32HandleInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    const platform.SECURITY_ATTRIBUTES*         pAttributes
+    platform.DWORD                              dwAccess
+}
+
+@extension("VK_NV_win32_keyed_mutex")
+class VkWin32KeyedMutexAcquireReleaseInfoNV {
+    VkStructureType                             sType
+    const void*                                 pNext
+    u32                                         acquireCount
+    const VkDeviceMemory*                       pAcquireSyncs
+    const u64*                                  pAcquireKeys
+    const u32*                                  pAcquireTimeoutMilliseconds
+    u32                                         releaseCount
+    const VkDeviceMemory*                       pReleaseSyncs
+    const u64*                                  pReleaseKeys
+}
+
 @extension("VK_KHR_get_physical_device_properties2")
 class VkPhysicalDeviceFeatures2KHR {
     VkStructureType                             sType
@@ -3097,78 +3139,6 @@
     VkImageTiling                               tiling
 }
 
-@extension("VK_KHR_incremental_present")
-class VkRectLayerKHR {
-    VkOffset2D                                  offset
-    VkExtent2D                                  extent
-    u32                                         layer
-}
-
-@extension("VK_KHR_incremental_present")
-class VkPresentRegionKHR {
-    u32                                         rectangleCount
-    const VkRectLayerKHR*                       pRectangles
-}
-
-@extension("VK_KHR_incremental_present")
-class VkPresentRegionsKHR {
-    VkStructureType                             sType
-    const void*                                 pNext
-    u32                                         swapchainCount
-    const VkPresentRegionKHR*                   pRegions
-}
-
-@extension("VK_NV_external_memory_capabilities")
-class VkExternalImageFormatPropertiesNV {
-    VkImageFormatProperties                     imageFormatProperties
-    VkExternalMemoryFeatureFlagsNV              externalMemoryFeatures
-    VkExternalMemoryHandleTypeFlagsNV           exportFromImportedHandleTypes
-    VkExternalMemoryHandleTypeFlagsNV           compatibleHandleTypes
-}
-
-@extension("VK_NV_external_memory")
-class VkExternalMemoryImageCreateInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    VkExternalMemoryHandleTypeFlagsNV           handleTypes
-}
-
-@extension("VK_NV_external_memory")
-class VkExportMemoryAllocateInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    VkExternalMemoryHandleTypeFlagsNV           handleTypes
-}
-
-@extension("VK_NV_external_memory_win32")
-class VkImportMemoryWin32HandleInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    VkExternalMemoryHandleTypeFlagsNV           handleType
-    platform.HANDLE                             handle
-}
-
-@extension("VK_NV_external_memory_win32")
-class VkExportMemoryWin32HandleInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    const platform.SECURITY_ATTRIBUTES*         pAttributes
-    u32                                         dwAccess
-}
-
-@extension("VK_NV_win32_keyed_mutex")
-class VkWin32KeyedMutexAcquireReleaseInfoNV {
-    VkStructureType                             sType
-    const void*                                 pNext
-    u32                                         acquireCount
-    const VkDeviceMemory*                       pAcquireSyncs
-    const u64*                                  pAcquireKeys
-    const u32*                                  pAcquireTimeoutMilliseconds
-    u32                                         releaseCount
-    const VkDeviceMemory*                       pReleaseSyncs
-    const u64*                                  pReleaseKeys
-}
-
 @extension("VK_EXT_validation_flags")
 class VkValidationFlagsEXT {
     VkStructureType                             sType
@@ -3303,7 +3273,44 @@
     VkShaderStageFlags                          stageFlags
 }
 
+@extension("VK_KHR_incremental_present")
+class VkRectLayerKHR {
+    VkOffset2D                                  offset
+    VkExtent2D                                  extent
+    u32                                         layer
+}
 
+@extension("VK_KHR_incremental_present")
+class VkPresentRegionKHR {
+    u32                                         rectangleCount
+    const VkRectLayerKHR*                       pRectangles
+}
+
+@extension("VK_KHR_incremental_present")
+class VkPresentRegionsKHR {
+    VkStructureType                             sType
+    const void*                                 pNext
+    u32                                         swapchainCount
+    const VkPresentRegionKHR*                   pRegions
+}
+
+@extension("VK_EXT_hdr_metadata")
+class VkXYColorEXT {
+    f32    x
+    f32    y
+}
+
+@extension("VK_EXT_hdr_metadata")
+class VkHdrMetadataEXT {
+    VkXYColorEXT    displayPrimaryRed
+    VkXYColorEXT    displayPrimaryGreen
+    VkXYColorEXT    displayPrimaryBlue
+    VkXYColorEXT    whitePoint
+    f32             maxLuminance
+    f32             minLuminance
+    f32             maxContentLightLevel
+    f32             maxFrameAverageLightLevel
+}
 
 ////////////////
 //  Commands  //
@@ -5977,6 +5984,50 @@
         VkDebugMarkerMarkerInfoEXT*                 pMarkerInfo) {
 }
 
+@extension("VK_AMD_draw_indirect_count")
+cmd void vkCmdDrawIndirectCountAMD(
+        VkCommandBuffer                             commandBuffer,
+        VkBuffer                                    buffer,
+        VkDeviceSize                                offset,
+        VkBuffer                                    countBuffer,
+        VkDeviceSize                                countBufferOffset,
+        u32                                         maxDrawCount,
+        u32                                         stride) {
+}
+
+@extension("VK_AMD_draw_indirect_count")
+cmd void vkCmdDrawIndexedIndirectCountAMD(
+        VkCommandBuffer                             commandBuffer,
+        VkBuffer                                    buffer,
+        VkDeviceSize                                offset,
+        VkBuffer                                    countBuffer,
+        VkDeviceSize                                countBufferOffset,
+        u32                                         maxDrawCount,
+        u32                                         stride) {
+}
+
+@extension("VK_NV_external_memory_capabilities")
+cmd VkResult vkGetPhysicalDeviceExternalImageFormatPropertiesNV(
+        VkPhysicalDevice                            physicalDevice,
+        VkFormat                                    format,
+        VkImageType                                 type,
+        VkImageTiling                               tiling,
+        VkImageUsageFlags                           usage,
+        VkImageCreateFlags                          flags,
+        VkExternalMemoryHandleTypeFlagsNV           externalHandleType,
+        VkExternalImageFormatPropertiesNV*          pExternalImageFormatProperties) {
+    return ?
+}
+
+@extension("VK_NV_external_memory_win32")
+cmd VkResult vkGetMemoryWin32HandleNV(
+        VkDevice                                    device,
+        VkDeviceMemory                              memory,
+        VkExternalMemoryHandleTypeFlagsNV           handleType,
+        platform.HANDLE*                            pHandle) {
+    return ?
+}
+
 @extension("VK_KHR_get_physical_device_properties2")
 cmd void vkGetPhysicalDeviceFeatures2KHR(
         VkPhysicalDevice                            physicalDevice,
@@ -6025,64 +6076,20 @@
         VkSparseImageFormatProperties2KHR*          pProperties) {
 }
 
-@extension("VK_AMD_draw_indirect_count")
-cmd void vkCmdDrawIndirectCountAMD(
-        VkCommandBuffer                             commandBuffer,
-        VkBuffer                                    buffer,
-        VkDeviceSize                                offset,
-        VkBuffer                                    countBuffer,
-        VkDeviceSize                                countBufferOffset,
-        u32                                         maxDrawCount,
-        u32                                         stride) {
-}
-
-@extension("VK_AMD_draw_indirect_count")
-cmd void vkCmdDrawIndexedIndirectCountAMD(
-        VkCommandBuffer                             commandBuffer,
-        VkBuffer                                    buffer,
-        VkDeviceSize                                offset,
-        VkBuffer                                    countBuffer,
-        VkDeviceSize                                countBufferOffset,
-        u32                                         maxDrawCount,
-        u32                                         stride) {
-}
-
-@extension("VK_NV_external_memory_capabilities")
-cmd VkResult vkGetPhysicalDeviceExternalImageFormatPropertiesNV(
-        VkPhysicalDevice                            physicalDevice,
-        VkFormat                                    format,
-        VkImageType                                 type,
-        VkImageTiling                               tiling,
-        VkImageUsageFlags                           usage,
-        VkImageCreateFlags                          flags,
-        VkExternalMemoryHandleTypeFlagsNV           externalHandleType,
-        VkExternalImageFormatPropertiesNV*          pExternalImageFormatProperties) {
-    return ?
-}
-
-@extension("VK_NV_external_memory_win32")
-cmd VkResult vkGetMemoryWin32HandleNV(
-        VkDevice                                    device,
-        VkDeviceMemory                              memory,
-        VkExternalMemoryHandleTypeFlagsNV           handleType,
-        platform.HANDLE*                            pHandle) {
-    return ?
-}
-
-@extension("VK_NV_external_memory_win32")
-cmd void  vkCmdProcessCommandsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkCmdProcessCommandsNVX(
         VkCommandBuffer                             commandBuffer,
         const VkCmdProcessCommandsInfoNVX*          pProcessCommandsInfo) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkCmdReserveSpaceForCommandsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkCmdReserveSpaceForCommandsNVX(
         VkCommandBuffer                             commandBuffer,
         const VkCmdReserveSpaceForCommandsInfoNVX*  pReserveSpaceInfo) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkCreateIndirectCommandsLayoutNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkCreateIndirectCommandsLayoutNVX(
         VkDevice                                    device,
         const VkIndirectCommandsLayoutCreateInfoNVX* pCreateInfo,
         const VkAllocationCallbacks*                pAllocator,
@@ -6090,15 +6097,15 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkDestroyIndirectCommandsLayoutNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkDestroyIndirectCommandsLayoutNVX(
         VkDevice                                    device,
         VkIndirectCommandsLayoutNVX                 indirectCommandsLayout,
         const VkAllocationCallbacks*                pAllocator) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkCreateObjectTableNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkCreateObjectTableNVX(
         VkDevice                                    device,
         const VkObjectTableCreateInfoNVX*           pCreateInfo,
         const VkAllocationCallbacks*                pAllocator,
@@ -6106,15 +6113,15 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkDestroyObjectTableNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkDestroyObjectTableNVX(
         VkDevice                                    device,
         VkObjectTableNVX                            objectTable,
         const VkAllocationCallbacks*                pAllocator) {
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkRegisterObjectsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkRegisterObjectsNVX(
         VkDevice                                    device,
         VkObjectTableNVX                            objectTable,
         u32                                         objectCount,
@@ -6123,8 +6130,8 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd VkResult  vkUnregisterObjectsNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd VkResult vkUnregisterObjectsNVX(
         VkDevice                                    device,
         VkObjectTableNVX                            objectTable,
         u32                                         objectCount,
@@ -6133,13 +6140,21 @@
     return ?
 }
 
-@extension("VK_NV_external_memory_win32")
-cmd void  vkGetPhysicalDeviceGeneratedCommandsPropertiesNVX(
+@extension("VK_NVX_device_generated_commands")
+cmd void vkGetPhysicalDeviceGeneratedCommandsPropertiesNVX(
         VkPhysicalDevice                            physicalDevice,
         VkDeviceGeneratedCommandsFeaturesNVX*       pFeatures,
         VkDeviceGeneratedCommandsLimitsNVX*         pLimits) {
 }
 
+@extension("VK_EXT_hdr_metadata")
+cmd void vkSetHdrMetadataEXT(
+    VkDevice                                        device,
+    u32                                             swapchainCount,
+    const VkSwapchainKHR*                           pSwapchains,
+    const VkHdrMetadataEXT*                         pMetadata) {
+}
+
 @extension("VK_KHR_shared_presentable_image")
 cmd VkResult vkGetSwapchainStatusKHR(
         VkDevice                                    device,
@@ -6147,7 +6162,6 @@
     return ?
 }
 
-
 ////////////////
 // Validation //
 ////////////////
diff --git a/vulkan/include/vulkan/vk_android_native_buffer.h b/vulkan/include/vulkan/vk_android_native_buffer.h
index d7c5a07..43a9a9c 100644
--- a/vulkan/include/vulkan/vk_android_native_buffer.h
+++ b/vulkan/include/vulkan/vk_android_native_buffer.h
@@ -37,12 +37,13 @@
  * backwards-compatibility support is temporary, and will likely be removed in
  * (along with all gralloc0 support) in a future release.
  */
-#define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     6
+#define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     7
 #define VK_ANDROID_NATIVE_BUFFER_EXTENSION_NAME   "VK_ANDROID_native_buffer"
 
 #define VK_ANDROID_NATIVE_BUFFER_ENUM(type,id)    ((type)(1000000000 + (1000 * (VK_ANDROID_NATIVE_BUFFER_EXTENSION_NUMBER - 1)) + (id)))
 #define VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID   VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 0)
 #define VK_STRUCTURE_TYPE_SWAPCHAIN_IMAGE_CREATE_INFO_ANDROID VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 1)
+#define VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 2)
 
 typedef enum VkSwapchainImageUsageFlagBitsANDROID {
     VK_SWAPCHAIN_IMAGE_USAGE_SHARED_BIT_ANDROID = 0x00000001,
@@ -75,6 +76,13 @@
     VkSwapchainImageUsageFlagsANDROID      usage;
 } VkSwapchainImageCreateInfoANDROID;
 
+typedef struct {
+    VkStructureType                        sType; // must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID
+    const void*                            pNext;
+
+    VkBool32                               sharedImage;
+} VkPhysicalDevicePresentationPropertiesANDROID;
+
 // -- DEPRECATED in SPEC_VERSION 6 --
 typedef VkResult (VKAPI_PTR *PFN_vkGetSwapchainGrallocUsageANDROID)(VkDevice device, VkFormat format, VkImageUsageFlags imageUsage, int* grallocUsage);
 // -- ADDED in SPEC_VERSION 6 --
diff --git a/vulkan/include/vulkan/vk_platform.h b/vulkan/include/vulkan/vk_platform.h
index c2232ec..2054447 100644
--- a/vulkan/include/vulkan/vk_platform.h
+++ b/vulkan/include/vulkan/vk_platform.h
@@ -53,7 +53,7 @@
     #define VKAPI_PTR  VKAPI_CALL
 #elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH < 7
     #error "Vulkan isn't supported for the 'armeabi' NDK ABI"
-#elif defined(__ANDROID__) && __ARM_ARCH >= 7 && __ARM_32BIT_STATE
+#elif defined(__ANDROID__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7 && defined(__ARM_32BIT_STATE)
     // On Android 32-bit ARM targets, Vulkan functions use the "hardfloat"
     // calling convention, i.e. float parameters are passed in registers. This
     // is true even if the rest of the application passes floats on the stack,
@@ -94,7 +94,7 @@
 // controls inclusion of the extension interfaces in vulkan.h.
 
 #ifdef VK_USE_PLATFORM_ANDROID_KHR
-#include <android/native_window.h>
+struct ANativeWindow;
 #endif
 
 #ifdef VK_USE_PLATFORM_MIR_KHR
diff --git a/vulkan/include/vulkan/vulkan.h b/vulkan/include/vulkan/vulkan.h
index 8d24aa7..43dba6e 100644
--- a/vulkan/include/vulkan/vulkan.h
+++ b/vulkan/include/vulkan/vulkan.h
@@ -6,7 +6,7 @@
 #endif
 
 /*
-** Copyright (c) 2015-2016 The Khronos Group Inc.
+** Copyright (c) 2015-2017 The Khronos Group Inc.
 **
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
@@ -220,7 +220,6 @@
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_IMAGE_CREATE_INFO_NV = 1000026000,
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_BUFFER_CREATE_INFO_NV = 1000026001,
     VK_STRUCTURE_TYPE_DEDICATED_ALLOCATION_MEMORY_ALLOCATE_INFO_NV = 1000026002,
-    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR = 1000084000,
     VK_STRUCTURE_TYPE_EXTERNAL_MEMORY_IMAGE_CREATE_INFO_NV = 1000056000,
     VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO_NV = 1000056001,
     VK_STRUCTURE_TYPE_IMPORT_MEMORY_WIN32_HANDLE_INFO_NV = 1000057000,
@@ -236,6 +235,7 @@
     VK_STRUCTURE_TYPE_SPARSE_IMAGE_FORMAT_PROPERTIES_2_KHR = 1000059007,
     VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SPARSE_IMAGE_FORMAT_INFO_2_KHR = 1000059008,
     VK_STRUCTURE_TYPE_VALIDATION_FLAGS_EXT = 1000061000,
+    VK_STRUCTURE_TYPE_PRESENT_REGIONS_KHR = 1000084000,
     VK_STRUCTURE_TYPE_OBJECT_TABLE_CREATE_INFO_NVX = 1000086000,
     VK_STRUCTURE_TYPE_INDIRECT_COMMANDS_LAYOUT_CREATE_INFO_NVX = 1000086001,
     VK_STRUCTURE_TYPE_CMD_PROCESS_COMMANDS_INFO_NVX = 1000086002,
@@ -3702,7 +3702,6 @@
 
 #ifdef VK_USE_PLATFORM_ANDROID_KHR
 #define VK_KHR_android_surface 1
-#include <android/native_window.h>
 
 #define VK_KHR_ANDROID_SURFACE_SPEC_VERSION 6
 #define VK_KHR_ANDROID_SURFACE_EXTENSION_NAME "VK_KHR_android_surface"
@@ -4154,52 +4153,6 @@
 } VkDedicatedAllocationMemoryAllocateInfoNV;
 
 
-#define VK_GOOGLE_display_timing 1
-#define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION 1
-#define VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME "VK_GOOGLE_display_timing"
-
-typedef struct VkRefreshCycleDurationGOOGLE {
-    uint64_t    refreshDuration;
-} VkRefreshCycleDurationGOOGLE;
-
-typedef struct VkPastPresentationTimingGOOGLE {
-    uint32_t    presentID;
-    uint64_t    desiredPresentTime;
-    uint64_t    actualPresentTime;
-    uint64_t    earliestPresentTime;
-    uint64_t    presentMargin;
-} VkPastPresentationTimingGOOGLE;
-
-typedef struct VkPresentTimeGOOGLE {
-    uint32_t    presentID;
-    uint64_t    desiredPresentTime;
-} VkPresentTimeGOOGLE;
-
-typedef struct VkPresentTimesInfoGOOGLE {
-    VkStructureType               sType;
-    const void*                   pNext;
-    uint32_t                      swapchainCount;
-    const VkPresentTimeGOOGLE*    pTimes;
-} VkPresentTimesInfoGOOGLE;
-
-
-typedef VkResult (VKAPI_PTR *PFN_vkGetRefreshCycleDurationGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
-typedef VkResult (VKAPI_PTR *PFN_vkGetPastPresentationTimingGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
-
-#ifndef VK_NO_PROTOTYPES
-VKAPI_ATTR VkResult VKAPI_CALL vkGetRefreshCycleDurationGOOGLE(
-    VkDevice                                    device,
-    VkSwapchainKHR                              swapchain,
-    VkRefreshCycleDurationGOOGLE*               pDisplayTimingProperties);
-
-VKAPI_ATTR VkResult VKAPI_CALL vkGetPastPresentationTimingGOOGLE(
-    VkDevice                                    device,
-    VkSwapchainKHR                              swapchain,
-    uint32_t*                                   pPresentationTimingCount,
-    VkPastPresentationTimingGOOGLE*             pPresentationTimings);
-#endif
-
-
 #define VK_AMD_draw_indirect_count 1
 #define VK_AMD_DRAW_INDIRECT_COUNT_SPEC_VERSION 1
 #define VK_AMD_DRAW_INDIRECT_COUNT_EXTENSION_NAME "VK_AMD_draw_indirect_count"
@@ -4608,6 +4561,84 @@
     VkDeviceGeneratedCommandsLimitsNVX*         pLimits);
 #endif
 
+#define VK_GOOGLE_display_timing 1
+#define VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION 1
+#define VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME "VK_GOOGLE_display_timing"
+
+typedef struct VkRefreshCycleDurationGOOGLE {
+    uint64_t    refreshDuration;
+} VkRefreshCycleDurationGOOGLE;
+
+typedef struct VkPastPresentationTimingGOOGLE {
+    uint32_t    presentID;
+    uint64_t    desiredPresentTime;
+    uint64_t    actualPresentTime;
+    uint64_t    earliestPresentTime;
+    uint64_t    presentMargin;
+} VkPastPresentationTimingGOOGLE;
+
+typedef struct VkPresentTimeGOOGLE {
+    uint32_t    presentID;
+    uint64_t    desiredPresentTime;
+} VkPresentTimeGOOGLE;
+
+typedef struct VkPresentTimesInfoGOOGLE {
+    VkStructureType               sType;
+    const void*                   pNext;
+    uint32_t                      swapchainCount;
+    const VkPresentTimeGOOGLE*    pTimes;
+} VkPresentTimesInfoGOOGLE;
+
+
+typedef VkResult (VKAPI_PTR *PFN_vkGetRefreshCycleDurationGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
+typedef VkResult (VKAPI_PTR *PFN_vkGetPastPresentationTimingGOOGLE)(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
+
+#ifndef VK_NO_PROTOTYPES
+VKAPI_ATTR VkResult VKAPI_CALL vkGetRefreshCycleDurationGOOGLE(
+    VkDevice                                    device,
+    VkSwapchainKHR                              swapchain,
+    VkRefreshCycleDurationGOOGLE*               pDisplayTimingProperties);
+
+VKAPI_ATTR VkResult VKAPI_CALL vkGetPastPresentationTimingGOOGLE(
+    VkDevice                                    device,
+    VkSwapchainKHR                              swapchain,
+    uint32_t*                                   pPresentationTimingCount,
+    VkPastPresentationTimingGOOGLE*             pPresentationTimings);
+#endif
+
+#define VK_EXT_hdr_metadata 1
+#define VK_EXT_HDR_METADATA_SPEC_VERSION  0
+#define VK_EXT_HDR_METADATA_EXTENSION_NAME "VK_EXT_hdr_metadata"
+
+typedef struct VkXYColorEXT {
+    float    x;
+    float    y;
+} VkXYColorEXT;
+
+typedef struct VkHdrMetadataEXT {
+    VkStructureType    sType;
+    const void*        pNext;
+    VkXYColorEXT       displayPrimaryRed;
+    VkXYColorEXT       displayPrimaryGreen;
+    VkXYColorEXT       displayPrimaryBlue;
+    VkXYColorEXT       whitePoint;
+    float              maxLuminance;
+    float              minLuminance;
+    float              maxContentLightLevel;
+    float              maxFrameAverageLightLevel;
+} VkHdrMetadataEXT;
+
+
+typedef void (VKAPI_PTR *PFN_vkSetHdrMetadataEXT)(VkDevice device, uint32_t swapchainCount, const VkSwapchainKHR* pSwapchains, const VkHdrMetadataEXT* pMetadata);
+
+#ifndef VK_NO_PROTOTYPES
+VKAPI_ATTR void VKAPI_CALL vkSetHdrMetadataEXT(
+    VkDevice                                    device,
+    uint32_t                                    swapchainCount,
+    const VkSwapchainKHR*                       pSwapchains,
+    const VkHdrMetadataEXT*                     pMetadata);
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/vulkan/libvulkan/code-generator.tmpl b/vulkan/libvulkan/code-generator.tmpl
index e3c44d2..4835a56 100644
--- a/vulkan/libvulkan/code-generator.tmpl
+++ b/vulkan/libvulkan/code-generator.tmpl
@@ -319,7 +319,7 @@
 }
 ¶
 ProcHook::Extension GetProcHookExtension(const char* name) {
-  {{$exts := Strings (Macro "driver.InterceptedExtensions") | SplitOn "\n"}}
+  {{$exts := Strings (Macro "driver.KnownExtensions") | SplitOn "\n"}}
   // clang-format off
   {{range $e := $exts}}
     if (strcmp(name, "{{$e}}") == 0) return ProcHook::{{TrimPrefix "VK_" $e}};
@@ -682,17 +682,29 @@
 {{define "driver.InterceptedExtensions"}}
 VK_ANDROID_native_buffer
 VK_EXT_debug_report
+VK_EXT_hdr_metadata
+VK_GOOGLE_display_timing
 VK_KHR_android_surface
 VK_KHR_incremental_present
 VK_KHR_surface
 VK_KHR_swapchain
-VK_GOOGLE_display_timing
 VK_KHR_shared_presentable_image
 {{end}}
 
 
 {{/*
 ------------------------------------------------------------------------------
+  Emits a list of extensions known to vulkan::driver.
+------------------------------------------------------------------------------
+*/}}
+{{define "driver.KnownExtensions"}}
+{{Macro "driver.InterceptedExtensions"}}
+VK_KHR_get_physical_device_properties2
+{{end}}
+
+
+{{/*
+------------------------------------------------------------------------------
   Emits true if an extension is intercepted by vulkan::driver.
 ------------------------------------------------------------------------------
 */}}
@@ -775,7 +787,7 @@
       };
 
       enum Extension {
-        {{$exts := Strings (Macro "driver.InterceptedExtensions") | SplitOn "\n"}}
+        {{$exts := Strings (Macro "driver.KnownExtensions") | SplitOn "\n"}}
         {{range $e := $exts}}
           {{TrimPrefix "VK_" $e}},
         {{end}}
@@ -964,7 +976,7 @@
     {{else if eq $.Name "vkDestroyImage"}}true
 
     {{else if eq $.Name "vkGetPhysicalDeviceProperties"}}true
-
+    {{else if eq $.Name "vkGetPhysicalDeviceProperties2KHR"}}true
     {{end}}
 
     {{$ext := GetAnnotation $ "extension"}}
@@ -1121,14 +1133,17 @@
   {{else if eq $ext "VK_KHR_wayland_surface"}}true
   {{else if eq $ext "VK_KHR_mir_surface"}}true
   {{else if eq $ext "VK_KHR_win32_surface"}}true
+  {{else if eq $ext "VK_NV_external_memory_win32"}}true
+  {{else if eq $ext "VK_NV_win32_keyed_mutex"}}true
   {{end}}
 {{end}}
 
 
 {{/*
 ------------------------------------------------------------------------------
-  Reports whether an extension is implemented entirely by the loader,
-  so drivers should not enumerate it.
+  Reports whether an extension has functions exported by the loader.
+  E.g. applications can directly link to an extension function.
+  Currently only support WSI extensions this way.
 ------------------------------------------------------------------------------
 */}}
 {{define "IsExtensionExported"}}
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index 32f777d..76aa176 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -29,6 +29,7 @@
 #include <android/dlext.h>
 #include <cutils/properties.h>
 #include <ui/GraphicsEnv.h>
+#include <utils/Vector.h>
 
 #include "driver.h"
 #include "stubhal.h"
@@ -454,6 +455,7 @@
                 hook_extensions_.set(ext_bit);
                 break;
             case ProcHook::EXTENSION_UNKNOWN:
+            case ProcHook::KHR_get_physical_device_properties2:
                 // HAL's extensions
                 break;
             default:
@@ -469,15 +471,16 @@
                 break;
             case ProcHook::KHR_incremental_present:
             case ProcHook::GOOGLE_display_timing:
+            case ProcHook::KHR_shared_presentable_image:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support
                 return;
+            case ProcHook::EXT_hdr_metadata:
+                hook_extensions_.set(ext_bit);
+                break;
             case ProcHook::EXTENSION_UNKNOWN:
                 // HAL's extensions
                 break;
-            case ProcHook::KHR_shared_presentable_image:
-                // Exposed by HAL, but API surface is all in the loader
-                break;
             default:
                 ALOGW("Ignored invalid device extension %s", name);
                 return;
@@ -495,10 +498,6 @@
             if (ext_bit == ProcHook::ANDROID_native_buffer)
                 hook_extensions_.set(ProcHook::KHR_swapchain);
 
-            // Exposed by HAL, but API surface is all in the loader
-            if (ext_bit == ProcHook::KHR_shared_presentable_image)
-                hook_extensions_.set(ext_bit);
-
             hal_extensions_.set(ext_bit);
         }
 
@@ -731,19 +730,63 @@
     return result;
 }
 
+bool QueryPresentationProperties(
+    VkPhysicalDevice physicalDevice,
+    VkPhysicalDevicePresentationPropertiesANDROID *presentation_properties)
+{
+    const InstanceData& data = GetData(physicalDevice);
+
+    // GPDP2 must be present and enabled on the instance.
+    if (!data.driver.GetPhysicalDeviceProperties2KHR)
+        return false;
+
+    // Request the android-specific presentation properties via GPDP2
+    VkPhysicalDeviceProperties2KHR properties = {
+        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR,
+        presentation_properties,
+        {}
+    };
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wold-style-cast"
+    presentation_properties->sType =
+        VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID;
+#pragma clang diagnostic pop
+    presentation_properties->pNext = nullptr;
+    presentation_properties->sharedImage = VK_FALSE;
+
+    data.driver.GetPhysicalDeviceProperties2KHR(physicalDevice,
+                                                &properties);
+
+    return true;
+}
+
 VkResult EnumerateDeviceExtensionProperties(
     VkPhysicalDevice physicalDevice,
     const char* pLayerName,
     uint32_t* pPropertyCount,
     VkExtensionProperties* pProperties) {
     const InstanceData& data = GetData(physicalDevice);
-    static const std::array<VkExtensionProperties, 2> loader_extensions = {{
-        // WSI extensions
-        {VK_KHR_INCREMENTAL_PRESENT_EXTENSION_NAME,
-         VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION},
-        {VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME,
-         VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION},
-    }};
+    // extensions that are unconditionally exposed by the loader
+    android::Vector<VkExtensionProperties> loader_extensions;
+    loader_extensions.push_back({
+        VK_KHR_INCREMENTAL_PRESENT_EXTENSION_NAME,
+        VK_KHR_INCREMENTAL_PRESENT_SPEC_VERSION});
+    loader_extensions.push_back({
+        VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME,
+        VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION});
+    loader_extensions.push_back({
+        VK_EXT_HDR_METADATA_EXTENSION_NAME,
+        VK_EXT_HDR_METADATA_SPEC_VERSION});
+
+    // conditionally add shared_presentable_image if supportable
+    VkPhysicalDevicePresentationPropertiesANDROID presentation_properties;
+    if (QueryPresentationProperties(physicalDevice, &presentation_properties) &&
+        presentation_properties.sharedImage) {
+        loader_extensions.push_back({
+            VK_KHR_SHARED_PRESENTABLE_IMAGE_EXTENSION_NAME,
+            VK_KHR_SHARED_PRESENTABLE_IMAGE_SPEC_VERSION});
+    }
 
     // enumerate our extensions first
     if (!pLayerName && pProperties) {
diff --git a/vulkan/libvulkan/driver.h b/vulkan/libvulkan/driver.h
index 5383f59..7f8ae98 100644
--- a/vulkan/libvulkan/driver.h
+++ b/vulkan/libvulkan/driver.h
@@ -109,6 +109,10 @@
 bool OpenHAL();
 const VkAllocationCallbacks& GetDefaultAllocator();
 
+bool QueryPresentationProperties(
+    VkPhysicalDevice physicalDevice,
+    VkPhysicalDevicePresentationPropertiesANDROID *presentation_properties);
+
 // clang-format off
 VKAPI_ATTR PFN_vkVoidFunction GetInstanceProcAddr(VkInstance instance, const char* pName);
 VKAPI_ATTR PFN_vkVoidFunction GetDeviceProcAddr(VkDevice device, const char* pName);
diff --git a/vulkan/libvulkan/driver_gen.cpp b/vulkan/libvulkan/driver_gen.cpp
index 951ea6e..c4cb544 100644
--- a/vulkan/libvulkan/driver_gen.cpp
+++ b/vulkan/libvulkan/driver_gen.cpp
@@ -93,6 +93,14 @@
     }
 }
 
+VKAPI_ATTR void checkedSetHdrMetadataEXT(VkDevice device, uint32_t swapchainCount, const VkSwapchainKHR* pSwapchains, const VkHdrMetadataEXT* pMetadata) {
+    if (GetData(device).hook_extensions[ProcHook::EXT_hdr_metadata]) {
+        SetHdrMetadataEXT(device, swapchainCount, pSwapchains, pMetadata);
+    } else {
+        Logger(device).Err(device, "VK_EXT_hdr_metadata not enabled. vkSetHdrMetadataEXT not executed.");
+    }
+}
+
 VKAPI_ATTR VkResult checkedGetSwapchainStatusKHR(VkDevice device, VkSwapchainKHR swapchain) {
     if (GetData(device).hook_extensions[ProcHook::KHR_shared_presentable_image]) {
         return GetSwapchainStatusKHR(device, swapchain);
@@ -330,6 +338,13 @@
         nullptr,
         nullptr,
     },
+    {
+        "vkSetHdrMetadataEXT",
+        ProcHook::DEVICE,
+        ProcHook::EXT_hdr_metadata,
+        reinterpret_cast<PFN_vkVoidFunction>(SetHdrMetadataEXT),
+        reinterpret_cast<PFN_vkVoidFunction>(checkedSetHdrMetadataEXT),
+    },
     // clang-format on
 };
 
@@ -349,12 +364,14 @@
     // clang-format off
     if (strcmp(name, "VK_ANDROID_native_buffer") == 0) return ProcHook::ANDROID_native_buffer;
     if (strcmp(name, "VK_EXT_debug_report") == 0) return ProcHook::EXT_debug_report;
+    if (strcmp(name, "VK_EXT_hdr_metadata") == 0) return ProcHook::EXT_hdr_metadata;
+    if (strcmp(name, "VK_GOOGLE_display_timing") == 0) return ProcHook::GOOGLE_display_timing;
     if (strcmp(name, "VK_KHR_android_surface") == 0) return ProcHook::KHR_android_surface;
     if (strcmp(name, "VK_KHR_incremental_present") == 0) return ProcHook::KHR_incremental_present;
     if (strcmp(name, "VK_KHR_surface") == 0) return ProcHook::KHR_surface;
     if (strcmp(name, "VK_KHR_swapchain") == 0) return ProcHook::KHR_swapchain;
-    if (strcmp(name, "VK_GOOGLE_display_timing") == 0) return ProcHook::GOOGLE_display_timing;
     if (strcmp(name, "VK_KHR_shared_presentable_image") == 0) return ProcHook::KHR_shared_presentable_image;
+    if (strcmp(name, "VK_KHR_get_physical_device_properties2") == 0) return ProcHook::KHR_get_physical_device_properties2;
     // clang-format on
     return ProcHook::EXTENSION_UNKNOWN;
 }
@@ -393,6 +410,7 @@
     INIT_PROC_EXT(EXT_debug_report, true, instance, CreateDebugReportCallbackEXT);
     INIT_PROC_EXT(EXT_debug_report, true, instance, DestroyDebugReportCallbackEXT);
     INIT_PROC_EXT(EXT_debug_report, true, instance, DebugReportMessageEXT);
+    INIT_PROC_EXT(KHR_get_physical_device_properties2, true, instance, GetPhysicalDeviceProperties2KHR);
     // clang-format on
 
     return success;
diff --git a/vulkan/libvulkan/driver_gen.h b/vulkan/libvulkan/driver_gen.h
index 95c70f8..c9dba78 100644
--- a/vulkan/libvulkan/driver_gen.h
+++ b/vulkan/libvulkan/driver_gen.h
@@ -35,12 +35,14 @@
     enum Extension {
         ANDROID_native_buffer,
         EXT_debug_report,
+        EXT_hdr_metadata,
+        GOOGLE_display_timing,
         KHR_android_surface,
         KHR_incremental_present,
         KHR_surface,
         KHR_swapchain,
-        GOOGLE_display_timing,
         KHR_shared_presentable_image,
+        KHR_get_physical_device_properties2,
 
         EXTENSION_CORE,  // valid bit
         EXTENSION_COUNT,
@@ -66,6 +68,7 @@
     PFN_vkCreateDebugReportCallbackEXT CreateDebugReportCallbackEXT;
     PFN_vkDestroyDebugReportCallbackEXT DestroyDebugReportCallbackEXT;
     PFN_vkDebugReportMessageEXT DebugReportMessageEXT;
+    PFN_vkGetPhysicalDeviceProperties2KHR GetPhysicalDeviceProperties2KHR;
     // clang-format on
 };
 
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index 9630ac9..31f8796 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -542,26 +542,32 @@
 }
 
 VKAPI_ATTR
-VkResult GetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice /*pdev*/,
+VkResult GetPhysicalDeviceSurfacePresentModesKHR(VkPhysicalDevice pdev,
                                                  VkSurfaceKHR /*surface*/,
                                                  uint32_t* count,
                                                  VkPresentModeKHR* modes) {
-    const VkPresentModeKHR kModes[] = {
-        VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_FIFO_KHR,
-        // TODO(chrisforbes): should only expose this if the driver can.
-        // VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR,
-        // VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR,
-    };
-    const uint32_t kNumModes = sizeof(kModes) / sizeof(kModes[0]);
+    android::Vector<VkPresentModeKHR> present_modes;
+    present_modes.push_back(VK_PRESENT_MODE_MAILBOX_KHR);
+    present_modes.push_back(VK_PRESENT_MODE_FIFO_KHR);
+
+    VkPhysicalDevicePresentationPropertiesANDROID present_properties;
+    if (QueryPresentationProperties(pdev, &present_properties)) {
+        if (present_properties.sharedImage) {
+            present_modes.push_back(VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR);
+            present_modes.push_back(VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR);
+        }
+    }
+
+    uint32_t num_modes = uint32_t(present_modes.size());
 
     VkResult result = VK_SUCCESS;
     if (modes) {
-        if (*count < kNumModes)
+        if (*count < num_modes)
             result = VK_INCOMPLETE;
-        *count = std::min(*count, kNumModes);
-        std::copy(kModes, kModes + *count, modes);
+        *count = std::min(*count, num_modes);
+        std::copy(present_modes.begin(), present_modes.begin() + int(*count), modes);
     } else {
-        *count = kNumModes;
+        *count = num_modes;
     }
     return result;
 }
@@ -1351,5 +1357,18 @@
     return result;
 }
 
+VKAPI_ATTR void SetHdrMetadataEXT(
+    VkDevice device,
+    uint32_t swapchainCount,
+    const VkSwapchainKHR* pSwapchains,
+    const VkHdrMetadataEXT* pHdrMetadataEXTs) {
+    // TODO: courtneygo: implement actual function
+    (void)device;
+    (void)swapchainCount;
+    (void)pSwapchains;
+    (void)pHdrMetadataEXTs;
+    return;
+}
+
 }  // namespace driver
 }  // namespace vulkan
diff --git a/vulkan/libvulkan/swapchain.h b/vulkan/libvulkan/swapchain.h
index 91d7219..4d9f18f 100644
--- a/vulkan/libvulkan/swapchain.h
+++ b/vulkan/libvulkan/swapchain.h
@@ -37,6 +37,7 @@
 VKAPI_ATTR VkResult GetRefreshCycleDurationGOOGLE(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
 VKAPI_ATTR VkResult GetPastPresentationTimingGOOGLE(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
 VKAPI_ATTR VkResult GetSwapchainStatusKHR(VkDevice device, VkSwapchainKHR swapchain);
+VKAPI_ATTR void SetHdrMetadataEXT(VkDevice device, uint32_t swapchainCount, const VkSwapchainKHR* pSwapchains, const VkHdrMetadataEXT* pHdrMetadataEXTs);
 // clang-format on
 
 }  // namespace driver