Merge "[TimeStats] Track RenderEngine time per frame."
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 3fa5430..20bfe65 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -4,6 +4,7 @@
 [Builtin Hooks Options]
 # Only turn on clang-format check for the following subfolders.
 clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp
+               cmds/idlcli/
                include/input/
                libs/binder/fuzzer/
                libs/binder/ndk/
diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..8173c89
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,63 @@
+{
+  "presubmit": [
+    {
+      "name": "SurfaceFlinger_test",
+      "options": [
+        {
+          "include-filter": "*CredentialsTest.*"
+        },
+        {
+          "include-filter": "*SurfaceFlingerStress.*"
+        },
+        {
+          "include-filter": "*SurfaceInterceptorTest.*"
+        },
+        {
+          "include-filter": "*LayerTransactionTest.*"
+        },
+        {
+          "include-filter": "*LayerTypeTransactionTest.*"
+        },
+        {
+          "include-filter": "*LayerUpdateTest.*"
+        },
+        {
+          "include-filter": "*GeometryLatchingTest.*"
+        },
+        {
+          "include-filter": "*CropLatchingTest.*"
+        },
+        {
+          "include-filter": "*ChildLayerTest.*"
+        },
+        {
+          "include-filter": "*ScreenCaptureTest.*"
+        },
+        {
+          "include-filter": "*ScreenCaptureChildOnlyTest.*"
+        },
+        {
+          "include-filter": "*DereferenceSurfaceControlTest.*"
+        },
+        {
+          "include-filter": "*BoundlessLayerTest.*"
+        },
+        {
+          "include-filter": "*MultiDisplayLayerBoundsTest.*"
+        },
+        {
+          "include-filter": "*InvalidHandleTest.*"
+        },
+        {
+          "include-filter": "*VirtualDisplayTest.*"
+        },
+        {
+          "include-filter": "*RelativeZTest.*"
+        }
+      ]
+    },
+    {
+      "name": "libsurfaceflinger_unittest"
+    }
+  ]
+}
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index 61e22a4..9d6a7ff 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -933,6 +933,31 @@
     unlink(path.c_str());
 }
 
+static void DumpVisibleWindowViews() {
+    if (!ds.IsZipping()) {
+        MYLOGD("Not dumping visible views because it's not a zipped bugreport\n");
+        return;
+    }
+    DurationReporter duration_reporter("VISIBLE WINDOW VIEWS");
+    const std::string path = ds.bugreport_internal_dir_ + "/tmp_visible_window_views";
+    auto fd = android::base::unique_fd(TEMP_FAILURE_RETRY(open(path.c_str(),
+                O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC | O_NOFOLLOW,
+                S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)));
+    if (fd < 0) {
+        MYLOGE("Could not open %s to dump visible views.\n", path.c_str());
+        return;
+    }
+    RunCommandToFd(fd, "", {"cmd", "window", "dump-visible-window-views"},
+                   CommandOptions::WithTimeout(120).Build());
+    bool empty = 0 == lseek(fd, 0, SEEK_END);
+    if (!empty) {
+        ds.AddZipEntry("visible_windows.zip", path);
+    } else {
+        MYLOGW("Failed to dump visible windows\n");
+    }
+    unlink(path.c_str());
+}
+
 static void DumpIpTablesAsRoot() {
     RunCommand("IPTABLES", {"iptables", "-L", "-nvx"});
     RunCommand("IP6TABLES", {"ip6tables", "-L", "-nvx"});
@@ -1317,6 +1342,8 @@
 
     RUN_SLOW_FUNCTION_WITH_CONSENT_CHECK(RunCommand, "PROCRANK", {"procrank"}, AS_ROOT_20);
 
+    RUN_SLOW_FUNCTION_WITH_CONSENT_CHECK(DumpVisibleWindowViews);
+
     DumpFile("VIRTUAL MEMORY STATS", "/proc/vmstat");
     DumpFile("VMALLOC INFO", "/proc/vmallocinfo");
     DumpFile("SLAB INFO", "/proc/slabinfo");
@@ -1518,11 +1545,7 @@
  * Returns RunStatus::USER_DENIED_CONSENT if user explicitly denied consent to sharing the bugreport
  * with the caller.
  */
-static Dumpstate::RunStatus DumpstateDefault() {
-    // Invoking the following dumpsys calls before DumpTraces() to try and
-    // keep the system stats as close to its initial state as possible.
-    RUN_SLOW_FUNCTION_WITH_CONSENT_CHECK(RunDumpsysCritical);
-
+Dumpstate::RunStatus Dumpstate::DumpstateDefaultAfterCritical() {
     // Capture first logcat early on; useful to take a snapshot before dumpstate logs take over the
     // buffer.
     DoLogcat();
@@ -1607,6 +1630,7 @@
 // This method collects dumpsys for telephony debugging only
 static void DumpstateTelephonyOnly() {
     DurationReporter duration_reporter("DUMPSTATE");
+
     const CommandOptions DUMPSYS_COMPONENTS_OPTIONS = CommandOptions::WithTimeout(60).Build();
 
     DumpstateRadioCommon();
@@ -2033,12 +2057,12 @@
                                   ? StringPrintf("[fd:%d]", ds.options_->bugreport_fd.get())
                                   : ds.bugreport_internal_dir_.c_str();
     MYLOGD(
-        "Bugreport dir: %s\n"
-        "Base name: %s\n"
-        "Suffix: %s\n"
-        "Log path: %s\n"
-        "Temporary path: %s\n"
-        "Screenshot path: %s\n",
+        "Bugreport dir: [%s] "
+        "Base name: [%s] "
+        "Suffix: [%s] "
+        "Log path: [%s] "
+        "Temporary path: [%s] "
+        "Screenshot path: [%s]\n",
         destination.c_str(), ds.base_name_.c_str(), ds.name_.c_str(), ds.log_path_.c_str(),
         ds.tmp_path_.c_str(), ds.screenshot_path_.c_str());
 
@@ -2140,21 +2164,14 @@
 }
 
 static void LogDumpOptions(const Dumpstate::DumpOptions& options) {
-    MYLOGI("do_zip_file: %d\n", options.do_zip_file);
-    MYLOGI("do_add_date: %d\n", options.do_add_date);
-    MYLOGI("do_vibrate: %d\n", options.do_vibrate);
-    MYLOGI("use_socket: %d\n", options.use_socket);
-    MYLOGI("use_control_socket: %d\n", options.use_control_socket);
-    MYLOGI("do_fb: %d\n", options.do_fb);
-    MYLOGI("is_remote_mode: %d\n", options.is_remote_mode);
-    MYLOGI("show_header_only: %d\n", options.show_header_only);
-    MYLOGI("do_start_service: %d\n", options.do_start_service);
-    MYLOGI("telephony_only: %d\n", options.telephony_only);
-    MYLOGI("wifi_only: %d\n", options.wifi_only);
-    MYLOGI("do_progress_updates: %d\n", options.do_progress_updates);
-    MYLOGI("fd: %d\n", options.bugreport_fd.get());
-    MYLOGI("bugreport_mode: %s\n", options.bugreport_mode.c_str());
-    MYLOGI("args: %s\n", options.args.c_str());
+    MYLOGI(
+        "do_zip_file: %d do_vibrate: %d use_socket: %d use_control_socket: %d do_fb: %d "
+        "is_remote_mode: %d show_header_only: %d do_start_service: %d telephony_only: %d "
+        "wifi_only: %d do_progress_updates: %d fd: %d bugreport_mode: %s args: %s\n",
+        options.do_zip_file, options.do_vibrate, options.use_socket, options.use_control_socket,
+        options.do_fb, options.is_remote_mode, options.show_header_only, options.do_start_service,
+        options.telephony_only, options.wifi_only, options.do_progress_updates,
+        options.bugreport_fd.get(), options.bugreport_mode.c_str(), options.args.c_str());
 }
 
 void Dumpstate::DumpOptions::Initialize(BugreportMode bugreport_mode,
@@ -2326,11 +2343,6 @@
 
     MYLOGD("dumpstate calling_uid = %d ; calling package = %s \n",
             calling_uid, calling_package.c_str());
-    if (CalledByApi()) {
-        // If the output needs to be copied over to the caller's fd, get user consent.
-        android::String16 package(calling_package.c_str());
-        CheckUserConsent(calling_uid, package);
-    }
 
     // Redirect output if needed
     bool is_redirecting = options_->OutputToFile();
@@ -2347,8 +2359,6 @@
     id_ = ++last_id;
     android::base::SetProperty(PROPERTY_LAST_ID, std::to_string(last_id));
 
-    MYLOGI("begin\n");
-
     if (acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_NAME) < 0) {
         MYLOGE("Failed to acquire wake lock: %s\n", strerror(errno));
     } else {
@@ -2371,10 +2381,8 @@
         MYLOGI("Running on dry-run mode (to disable it, call 'setprop dumpstate.dry_run false')\n");
     }
 
-    MYLOGI("dumpstate info: id=%d, args='%s', bugreport_mode= %s)\n", id_, options_->args.c_str(),
-           options_->bugreport_mode.c_str());
-
-    MYLOGI("bugreport format version: %s\n", version_.c_str());
+    MYLOGI("dumpstate info: id=%d, args='%s', bugreport_mode= %s bugreport format version: %s\n",
+           id_, options_->args.c_str(), options_->bugreport_mode.c_str(), version_.c_str());
 
     do_early_screenshot_ = options_->do_progress_updates;
 
@@ -2473,13 +2481,23 @@
     PrintHeader();
 
     if (options_->telephony_only) {
+        MaybeCheckUserConsent(calling_uid, calling_package);
         DumpstateTelephonyOnly();
         DumpstateBoard();
     } else if (options_->wifi_only) {
+        MaybeCheckUserConsent(calling_uid, calling_package);
         DumpstateWifiOnly();
     } else {
+        // Invoking the critical dumpsys calls before DumpTraces() to try and
+        // keep the system stats as close to its initial state as possible.
+        RunDumpsysCritical();
+
+        // Run consent check only after critical dumpsys has finished -- so the consent
+        // isn't going to pollute the system state / logs.
+        MaybeCheckUserConsent(calling_uid, calling_package);
+
         // Dump state for the default case. This also drops root.
-        RunStatus s = DumpstateDefault();
+        RunStatus s = DumpstateDefaultAfterCritical();
         if (s != RunStatus::OK) {
             if (s == RunStatus::USER_CONSENT_DENIED) {
                 HandleUserConsentDenied();
@@ -2564,17 +2582,20 @@
                : RunStatus::OK;
 }
 
-void Dumpstate::CheckUserConsent(int32_t calling_uid, const android::String16& calling_package) {
-    if (calling_uid == AID_SHELL) {
+void Dumpstate::MaybeCheckUserConsent(int32_t calling_uid, const std::string& calling_package) {
+    if (calling_uid == AID_SHELL || !CalledByApi()) {
+        // No need to get consent for shell triggered dumpstates, or not through
+        // bugreporting API (i.e. no fd to copy back).
         return;
     }
     consent_callback_ = new ConsentCallback();
     const String16 incidentcompanion("incidentcompanion");
     sp<android::IBinder> ics(defaultServiceManager()->getService(incidentcompanion));
+    android::String16 package(calling_package.c_str());
     if (ics != nullptr) {
         MYLOGD("Checking user consent via incidentcompanion service\n");
         android::interface_cast<android::os::IIncidentCompanion>(ics)->authorizeReport(
-            calling_uid, calling_package, String16(), String16(),
+            calling_uid, package, String16(), String16(),
             0x1 /* FLAG_CONFIRMATION_DIALOG */, consent_callback_.get());
     } else {
         MYLOGD("Unable to check user consent; incidentcompanion service unavailable\n");
@@ -3471,8 +3492,8 @@
     }
 
     if (listener_ != nullptr) {
-        if (percent % 5 == 0) {
-            // We don't want to spam logcat, so only log multiples of 5.
+        if (percent % 10 == 0) {
+            // We don't want to spam logcat, so only log multiples of 10.
             MYLOGD("Setting progress: %d/%d (%d%%)\n", progress, max, percent);
         } else {
             // stderr is ignored on normal invocations, but useful when calling
diff --git a/cmds/dumpstate/dumpstate.h b/cmds/dumpstate/dumpstate.h
index 831574d..7d9b113 100644
--- a/cmds/dumpstate/dumpstate.h
+++ b/cmds/dumpstate/dumpstate.h
@@ -486,7 +486,9 @@
   private:
     RunStatus RunInternal(int32_t calling_uid, const std::string& calling_package);
 
-    void CheckUserConsent(int32_t calling_uid, const android::String16& calling_package);
+    RunStatus DumpstateDefaultAfterCritical();
+
+    void MaybeCheckUserConsent(int32_t calling_uid, const std::string& calling_package);
 
     // Removes the in progress files output files (tmp file, zip/txt file, screenshot),
     // but leaves the log file alone.
diff --git a/cmds/idlcli/Android.bp b/cmds/idlcli/Android.bp
index bb92fd3..5476319 100644
--- a/cmds/idlcli/Android.bp
+++ b/cmds/idlcli/Android.bp
@@ -36,7 +36,10 @@
     defaults: ["idlcli-defaults"],
     srcs: [
         "CommandVibrator.cpp",
+        "vibrator/CommandCompose.cpp",
         "vibrator/CommandGetCapabilities.cpp",
+        "vibrator/CommandGetCompositionDelayMax.cpp",
+        "vibrator/CommandGetCompositionSizeMax.cpp",
         "vibrator/CommandOff.cpp",
         "vibrator/CommandOn.cpp",
         "vibrator/CommandPerform.cpp",
diff --git a/cmds/idlcli/vibrator/CommandCompose.cpp b/cmds/idlcli/vibrator/CommandCompose.cpp
new file mode 100644
index 0000000..705e40b
--- /dev/null
+++ b/cmds/idlcli/vibrator/CommandCompose.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2019 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 "utils.h"
+#include "vibrator.h"
+
+namespace android {
+namespace idlcli {
+
+class CommandVibrator;
+
+namespace vibrator {
+
+using aidl::CompositeEffect;
+
+class CommandCompose : public Command {
+    std::string getDescription() const override { return "Compose vibration."; }
+
+    std::string getUsageSummary() const override { return "<delay> <primitive> <scale> ..."; }
+
+    UsageDetails getUsageDetails() const override {
+        UsageDetails details{
+                {"<delay>", {"In milliseconds"}},
+                {"<primitive>", {"Primitive ID."}},
+                {"<scale>", {"0.0 (exclusive) - 1.0 (inclusive)."}},
+                {"...", {"May repeat multiple times."}},
+        };
+        return details;
+    }
+
+    Status doArgs(Args &args) override {
+        while (!args.empty()) {
+            CompositeEffect effect;
+            if (auto delay = args.pop<decltype(effect.delayMs)>()) {
+                effect.delayMs = *delay;
+                std::cout << "Delay: " << effect.delayMs << std::endl;
+            } else {
+                std::cerr << "Missing or Invalid Delay!" << std::endl;
+                return USAGE;
+            }
+            // TODO: Use range validation when supported by AIDL
+            if (auto primitive = args.pop<std::underlying_type_t<decltype(effect.primitive)>>()) {
+                effect.primitive = static_cast<decltype(effect.primitive)>(*primitive);
+                std::cout << "Primitive: " << toString(effect.primitive) << std::endl;
+            } else {
+                std::cerr << "Missing or Invalid Primitive!" << std::endl;
+                return USAGE;
+            }
+            if (auto scale = args.pop<decltype(effect.scale)>();
+                scale && *scale > 0.0 && scale <= 1.0) {
+                effect.scale = *scale;
+                std::cout << "Scale: " << effect.scale << std::endl;
+            } else {
+                std::cerr << "Missing or Invalid Scale!" << std::endl;
+                return USAGE;
+            }
+            mComposite.emplace_back(std::move(effect));
+        }
+        if (!args.empty()) {
+            std::cerr << "Unexpected Arguments!" << std::endl;
+            return USAGE;
+        }
+        return OK;
+    }
+
+    Status doMain(Args && /*args*/) override {
+        std::string statusStr;
+        Status ret;
+        if (auto hal = getHal<aidl::IVibrator>()) {
+            auto status = hal->call(&aidl::IVibrator::compose, mComposite, nullptr);
+            statusStr = status.toString8();
+            ret = status.isOk() ? OK : ERROR;
+        } else {
+            return UNAVAILABLE;
+        }
+
+        std::cout << "Status: " << statusStr << std::endl;
+
+        return ret;
+    }
+
+    std::vector<CompositeEffect> mComposite;
+};
+
+static const auto Command = CommandRegistry<CommandVibrator>::Register<CommandCompose>("compose");
+
+} // namespace vibrator
+} // namespace idlcli
+} // namespace android
diff --git a/cmds/idlcli/vibrator/CommandGetCompositionDelayMax.cpp b/cmds/idlcli/vibrator/CommandGetCompositionDelayMax.cpp
new file mode 100644
index 0000000..b414307
--- /dev/null
+++ b/cmds/idlcli/vibrator/CommandGetCompositionDelayMax.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 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 "utils.h"
+#include "vibrator.h"
+
+namespace android {
+namespace idlcli {
+
+class CommandVibrator;
+
+namespace vibrator {
+
+class CommandGetCompositionDelayMax : public Command {
+    std::string getDescription() const override {
+        return "Retrieves vibrator composition delay max.";
+    }
+
+    std::string getUsageSummary() const override { return ""; }
+
+    UsageDetails getUsageDetails() const override {
+        UsageDetails details{};
+        return details;
+    }
+
+    Status doArgs(Args &args) override {
+        if (!args.empty()) {
+            std::cerr << "Unexpected Arguments!" << std::endl;
+            return USAGE;
+        }
+        return OK;
+    }
+
+    Status doMain(Args && /*args*/) override {
+        std::string statusStr;
+        int32_t maxDelayMs;
+        Status ret;
+
+        if (auto hal = getHal<aidl::IVibrator>()) {
+            auto status = hal->call(&aidl::IVibrator::getCompositionDelayMax, &maxDelayMs);
+            statusStr = status.toString8();
+            ret = status.isOk() ? OK : ERROR;
+        } else {
+            return UNAVAILABLE;
+        }
+
+        std::cout << "Status: " << statusStr << std::endl;
+        std::cout << "Max Delay: " << maxDelayMs << " ms" << std::endl;
+
+        return ret;
+    }
+};
+
+static const auto Command =
+        CommandRegistry<CommandVibrator>::Register<CommandGetCompositionDelayMax>(
+                "getCompositionDelayMax");
+
+} // namespace vibrator
+} // namespace idlcli
+} // namespace android
diff --git a/cmds/idlcli/vibrator/CommandGetCompositionSizeMax.cpp b/cmds/idlcli/vibrator/CommandGetCompositionSizeMax.cpp
new file mode 100644
index 0000000..360fc9d
--- /dev/null
+++ b/cmds/idlcli/vibrator/CommandGetCompositionSizeMax.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 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 "utils.h"
+#include "vibrator.h"
+
+namespace android {
+namespace idlcli {
+
+class CommandVibrator;
+
+namespace vibrator {
+
+class CommandGetCompositionSizeMax : public Command {
+    std::string getDescription() const override {
+        return "Retrieves vibrator composition size max.";
+    }
+
+    std::string getUsageSummary() const override { return ""; }
+
+    UsageDetails getUsageDetails() const override {
+        UsageDetails details{};
+        return details;
+    }
+
+    Status doArgs(Args &args) override {
+        if (!args.empty()) {
+            std::cerr << "Unexpected Arguments!" << std::endl;
+            return USAGE;
+        }
+        return OK;
+    }
+
+    Status doMain(Args && /*args*/) override {
+        std::string statusStr;
+        int32_t maxSize;
+        Status ret;
+
+        if (auto hal = getHal<aidl::IVibrator>()) {
+            auto status = hal->call(&aidl::IVibrator::getCompositionSizeMax, &maxSize);
+            statusStr = status.toString8();
+            ret = status.isOk() ? OK : ERROR;
+        } else {
+            return UNAVAILABLE;
+        }
+
+        std::cout << "Status: " << statusStr << std::endl;
+        std::cout << "Max Size: " << maxSize << std::endl;
+
+        return ret;
+    }
+};
+
+static const auto Command =
+        CommandRegistry<CommandVibrator>::Register<CommandGetCompositionSizeMax>(
+                "getCompositionSizeMax");
+
+} // namespace vibrator
+} // namespace idlcli
+} // namespace android
diff --git a/cmds/idlcli/vibrator/CommandSetAmplitude.cpp b/cmds/idlcli/vibrator/CommandSetAmplitude.cpp
index 6e2261f..33d7eed 100644
--- a/cmds/idlcli/vibrator/CommandSetAmplitude.cpp
+++ b/cmds/idlcli/vibrator/CommandSetAmplitude.cpp
@@ -54,7 +54,8 @@
         Status ret;
 
         if (auto hal = getHal<aidl::IVibrator>()) {
-            auto status = hal->call(&aidl::IVibrator::setAmplitude, mAmplitude);
+            auto status = hal->call(&aidl::IVibrator::setAmplitude,
+                                    static_cast<float>(mAmplitude) / UINT8_MAX);
             statusStr = status.toString8();
             ret = status.isOk() ? OK : ERROR;
         } else if (auto hal = getHal<V1_0::IVibrator>()) {
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index 4026f29..95957a0 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -92,15 +92,12 @@
 static constexpr const char* CACHE_DIR_POSTFIX = "/cache";
 static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache";
 
-static constexpr const char *kIdMapPath = "/system/bin/idmap";
-static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/";
-static constexpr const char* IDMAP_SUFFIX = "@idmap";
-
 // fsverity assumes the page size is always 4096. If not, the feature can not be
 // enabled.
 static constexpr int kVerityPageSize = 4096;
 static constexpr size_t kSha256Size = 32;
 static constexpr const char* kPropApkVerityMode = "ro.apk_verity.mode";
+static constexpr const char* kFuseProp = "persist.sys.fuse";
 
 namespace {
 
@@ -592,12 +589,21 @@
         std::lock_guard<std::recursive_mutex> lock(mMountsLock);
         for (const auto& n : mStorageMounts) {
             auto extPath = n.second;
-            if (n.first.compare(0, 14, "/mnt/media_rw/") != 0) {
-                extPath += StringPrintf("/%d", userId);
-            } else if (userId != 0) {
-                // TODO: support devices mounted under secondary users
-                continue;
+
+            if (android::base::GetBoolProperty(kFuseProp, false)) {
+                std::regex re("^\\/mnt\\/pass_through\\/[0-9]+\\/emulated");
+                if (std::regex_match(extPath, re)) {
+                    extPath += "/" + std::to_string(userId);
+                }
+            } else {
+                if (n.first.compare(0, 14, "/mnt/media_rw/") != 0) {
+                    extPath += StringPrintf("/%d", userId);
+                } else if (userId != 0) {
+                    // TODO: support devices mounted under secondary users
+                    continue;
+                }
             }
+
             if (flags & FLAG_CLEAR_CACHE_ONLY) {
                 // Clear only cached data from shared storage
                 auto path = StringPrintf("%s/Android/data/%s/cache", extPath.c_str(), pkgname);
@@ -688,16 +694,26 @@
         std::lock_guard<std::recursive_mutex> lock(mMountsLock);
         for (const auto& n : mStorageMounts) {
             auto extPath = n.second;
-            if (n.first.compare(0, 14, "/mnt/media_rw/") != 0) {
-                extPath += StringPrintf("/%d", userId);
-            } else if (userId != 0) {
-                // TODO: support devices mounted under secondary users
-                continue;
+
+            if (android::base::GetBoolProperty(kFuseProp, false)) {
+                std::regex re("^\\/mnt\\/pass_through\\/[0-9]+\\/emulated");
+                if (std::regex_match(extPath, re)) {
+                    extPath += "/" + std::to_string(userId);
+                }
+            } else {
+                if (n.first.compare(0, 14, "/mnt/media_rw/") != 0) {
+                    extPath += StringPrintf("/%d", userId);
+                } else if (userId != 0) {
+                    // TODO: support devices mounted under secondary users
+                    continue;
+                }
             }
+
             auto path = StringPrintf("%s/Android/data/%s", extPath.c_str(), pkgname);
             if (delete_dir_contents_and_dir(path, true) != 0) {
                 res = error("Failed to delete contents of " + path);
             }
+
             path = StringPrintf("%s/Android/media/%s", extPath.c_str(), pkgname);
             if (delete_dir_contents_and_dir(path, true) != 0) {
                 res = error("Failed to delete contents of " + path);
@@ -2253,206 +2269,6 @@
     return res;
 }
 
-static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd)
-{
-    execl(kIdMapPath, kIdMapPath, "--fd", target_apk, overlay_apk,
-            StringPrintf("%d", idmap_fd).c_str(), (char*)nullptr);
-    PLOG(ERROR) << "execl (" << kIdMapPath << ") failed";
-}
-
-static void run_verify_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd)
-{
-    execl(kIdMapPath, kIdMapPath, "--verify", target_apk, overlay_apk,
-            StringPrintf("%d", idmap_fd).c_str(), (char*)nullptr);
-    PLOG(ERROR) << "execl (" << kIdMapPath << ") failed";
-}
-
-static bool delete_stale_idmap(const char* target_apk, const char* overlay_apk,
-        const char* idmap_path, int32_t uid) {
-    int idmap_fd = open(idmap_path, O_RDWR);
-    if (idmap_fd < 0) {
-        PLOG(ERROR) << "idmap open failed: " << idmap_path;
-        unlink(idmap_path);
-        return true;
-    }
-
-    pid_t pid;
-    pid = fork();
-    if (pid == 0) {
-        /* child -- drop privileges before continuing */
-        if (setgid(uid) != 0) {
-            LOG(ERROR) << "setgid(" << uid << ") failed during idmap";
-            exit(1);
-        }
-        if (setuid(uid) != 0) {
-            LOG(ERROR) << "setuid(" << uid << ") failed during idmap";
-            exit(1);
-        }
-        if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) {
-            PLOG(ERROR) << "flock(" << idmap_path << ") failed during idmap";
-            exit(1);
-        }
-
-        run_verify_idmap(target_apk, overlay_apk, idmap_fd);
-        exit(1); /* only if exec call to deleting stale idmap failed */
-    } else {
-        int status = wait_child(pid);
-        close(idmap_fd);
-
-        if (status != 0) {
-            // Failed on verifying if idmap is made from target_apk and overlay_apk.
-            LOG(DEBUG) << "delete stale idmap: " << idmap_path;
-            unlink(idmap_path);
-            return true;
-        }
-    }
-    return false;
-}
-
-// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix)
-// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap
-static int flatten_path(const char *prefix, const char *suffix,
-        const char *overlay_path, char *idmap_path, size_t N)
-{
-    if (overlay_path == nullptr || idmap_path == nullptr) {
-        return -1;
-    }
-    const size_t len_overlay_path = strlen(overlay_path);
-    // will access overlay_path + 1 further below; requires absolute path
-    if (len_overlay_path < 2 || *overlay_path != '/') {
-        return -1;
-    }
-    const size_t len_idmap_root = strlen(prefix);
-    const size_t len_suffix = strlen(suffix);
-    if (SIZE_MAX - len_idmap_root < len_overlay_path ||
-            SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) {
-        // additions below would cause overflow
-        return -1;
-    }
-    if (N < len_idmap_root + len_overlay_path + len_suffix) {
-        return -1;
-    }
-    memset(idmap_path, 0, N);
-    snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix);
-    char *ch = idmap_path + len_idmap_root;
-    while (*ch != '\0') {
-        if (*ch == '/') {
-            *ch = '@';
-        }
-        ++ch;
-    }
-    return 0;
-}
-
-binder::Status InstalldNativeService::idmap(const std::string& targetApkPath,
-        const std::string& overlayApkPath, int32_t uid) {
-    ENFORCE_UID(AID_SYSTEM);
-    CHECK_ARGUMENT_PATH(targetApkPath);
-    CHECK_ARGUMENT_PATH(overlayApkPath);
-    std::lock_guard<std::recursive_mutex> lock(mLock);
-
-    const char* target_apk = targetApkPath.c_str();
-    const char* overlay_apk = overlayApkPath.c_str();
-    ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid);
-
-    int idmap_fd = -1;
-    char idmap_path[PATH_MAX];
-    struct stat idmap_stat;
-    bool outdated = false;
-
-    if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk,
-                idmap_path, sizeof(idmap_path)) == -1) {
-        ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk);
-        goto fail;
-    }
-
-    if (stat(idmap_path, &idmap_stat) < 0) {
-        outdated = true;
-    } else {
-        outdated = delete_stale_idmap(target_apk, overlay_apk, idmap_path, uid);
-    }
-
-    if (outdated) {
-        idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644);
-    } else {
-        idmap_fd = open(idmap_path, O_RDWR);
-    }
-
-    if (idmap_fd < 0) {
-        ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno));
-        goto fail;
-    }
-    if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) {
-        ALOGE("idmap cannot chown '%s'\n", idmap_path);
-        goto fail;
-    }
-    if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) {
-        ALOGE("idmap cannot chmod '%s'\n", idmap_path);
-        goto fail;
-    }
-
-    if (!outdated) {
-        close(idmap_fd);
-        return ok();
-    }
-
-    pid_t pid;
-    pid = fork();
-    if (pid == 0) {
-        /* child -- drop privileges before continuing */
-        if (setgid(uid) != 0) {
-            ALOGE("setgid(%d) failed during idmap\n", uid);
-            exit(1);
-        }
-        if (setuid(uid) != 0) {
-            ALOGE("setuid(%d) failed during idmap\n", uid);
-            exit(1);
-        }
-        if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) {
-            ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno));
-            exit(1);
-        }
-
-        run_idmap(target_apk, overlay_apk, idmap_fd);
-        exit(1); /* only if exec call to idmap failed */
-    } else {
-        int status = wait_child(pid);
-        if (status != 0) {
-            ALOGE("idmap failed, status=0x%04x\n", status);
-            goto fail;
-        }
-    }
-
-    close(idmap_fd);
-    return ok();
-fail:
-    if (idmap_fd >= 0) {
-        close(idmap_fd);
-        unlink(idmap_path);
-    }
-    return error();
-}
-
-binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) {
-    ENFORCE_UID(AID_SYSTEM);
-    CHECK_ARGUMENT_PATH(overlayApkPath);
-    std::lock_guard<std::recursive_mutex> lock(mLock);
-
-    const char* overlay_apk = overlayApkPath.c_str();
-    char idmap_path[PATH_MAX];
-
-    if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk,
-                idmap_path, sizeof(idmap_path)) == -1) {
-        ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk);
-        return error();
-    }
-    if (unlink(idmap_path) < 0) {
-        ALOGE("couldn't unlink idmap file %s\n", idmap_path);
-        return error();
-    }
-    return ok();
-}
-
 binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid,
         const std::string& packageName, int32_t userId, int32_t flags, int32_t appId,
         const std::string& seInfo) {
@@ -2778,12 +2594,19 @@
         std::getline(in, target, ' ');
         std::getline(in, ignored);
 
+        if (android::base::GetBoolProperty(kFuseProp, false)) {
+            if (target.compare(0, 17, "/mnt/pass_through") == 0) {
+                LOG(DEBUG) << "Found storage mount " << source << " at " << target;
+                mStorageMounts[source] = target;
+            }
+        } else {
 #if !BYPASS_SDCARDFS
-        if (target.compare(0, 21, "/mnt/runtime/default/") == 0) {
-            LOG(DEBUG) << "Found storage mount " << source << " at " << target;
-            mStorageMounts[source] = target;
-        }
+            if (target.compare(0, 21, "/mnt/runtime/default/") == 0) {
+                LOG(DEBUG) << "Found storage mount " << source << " at " << target;
+                mStorageMounts[source] = target;
+            }
 #endif
+        }
     }
     return ok();
 }
diff --git a/cmds/installd/InstalldNativeService.h b/cmds/installd/InstalldNativeService.h
index 2b7bf33..ef91bf8 100644
--- a/cmds/installd/InstalldNativeService.h
+++ b/cmds/installd/InstalldNativeService.h
@@ -119,9 +119,6 @@
     binder::Status destroyProfileSnapshot(const std::string& packageName,
             const std::string& profileName);
 
-    binder::Status idmap(const std::string& targetApkPath, const std::string& overlayApkPath,
-            int32_t uid);
-    binder::Status removeIdmap(const std::string& overlayApkPath);
     binder::Status rmPackageDir(const std::string& packageDir);
     binder::Status markBootComplete(const std::string& instructionSet);
     binder::Status freeCache(const std::unique_ptr<std::string>& uuid, int64_t targetFreeBytes,
diff --git a/cmds/installd/binder/android/os/IInstalld.aidl b/cmds/installd/binder/android/os/IInstalld.aidl
index d99bcc8..6cc4bde 100644
--- a/cmds/installd/binder/android/os/IInstalld.aidl
+++ b/cmds/installd/binder/android/os/IInstalld.aidl
@@ -72,8 +72,6 @@
             @utf8InCpp String profileName, @utf8InCpp String classpath);
     void destroyProfileSnapshot(@utf8InCpp String packageName, @utf8InCpp String profileName);
 
-    void idmap(@utf8InCpp String targetApkPath, @utf8InCpp String overlayApkPath, int uid);
-    void removeIdmap(@utf8InCpp String overlayApkPath);
     void rmPackageDir(@utf8InCpp String packageDir);
     void markBootComplete(@utf8InCpp String instructionSet);
     void freeCache(@nullable @utf8InCpp String uuid, long targetFreeBytes,
diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index 616c3b2..f95e445 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -339,6 +339,10 @@
                 ? "dalvik.vm.dex2oat-threads"
                 : "dalvik.vm.boot-dex2oat-threads";
         std::string dex2oat_threads_arg = MapPropertyToArg(threads_property, "-j%s");
+        const char* cpu_set_property = post_bootcomplete
+                ? "dalvik.vm.dex2oat-cpu-set"
+                : "dalvik.vm.boot-dex2oat-cpu-set";
+        std::string dex2oat_cpu_set_arg = MapPropertyToArg(cpu_set_property, "--cpu-set=%s");
 
         std::string bootclasspath;
         char* dex2oat_bootclasspath = getenv("DEX2OATBOOTCLASSPATH");
@@ -518,6 +522,7 @@
         AddArg(image_block_size_arg);
         AddArg(dex2oat_compiler_filter_arg);
         AddArg(dex2oat_threads_arg);
+        AddArg(dex2oat_cpu_set_arg);
         AddArg(dex2oat_swap_fd);
         AddArg(dex2oat_image_fd);
 
diff --git a/cmds/installd/migrate_legacy_obb_data.sh b/cmds/installd/migrate_legacy_obb_data.sh
index 0e6d7b9..7399681 100644
--- a/cmds/installd/migrate_legacy_obb_data.sh
+++ b/cmds/installd/migrate_legacy_obb_data.sh
@@ -15,17 +15,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-rm -rf /data/media/Android/obb/test_probe
-mkdir -p /data/media/Android/obb/
-touch /data/media/Android/obb/test_probe
+rm -rf /data/media/0/Android/obb/test_probe
+mkdir -p /data/media/0/Android/obb/
+touch /data/media/0/Android/obb/test_probe
 if ! test -f /data/media/0/Android/obb/test_probe ; then
   log -p i -t migrate_legacy_obb_data "No support for 'unshared_obb'. Not migrating"
-  rm -rf /data/media/Android/obb/test_probe
+  rm -rf /data/media/0/Android/obb/test_probe
   exit 0
 fi
 
 # Delete the test file, and remove the obb folder if it is empty
-rm -rf /data/media/Android/obb/test_probe
+rm -rf /data/media/0/Android/obb/test_probe
 rmdir /data/media/obb
 
 if ! test -d /data/media/obb ; then
diff --git a/cmds/installd/otapreopt.cpp b/cmds/installd/otapreopt.cpp
index db36ce3..eefbe4f 100644
--- a/cmds/installd/otapreopt.cpp
+++ b/cmds/installd/otapreopt.cpp
@@ -480,6 +480,10 @@
                 "-j",
                 false,
                 cmd);
+        AddCompilerOptionFromSystemProperty("dalvik.vm.image-dex2oat-cpu-set",
+                "--cpu-set=",
+                false,
+                cmd);
         AddCompilerOptionFromSystemProperty(
                 StringPrintf("dalvik.vm.isa.%s.variant", isa).c_str(),
                 "--instruction-set-variant=",
diff --git a/cmds/servicemanager/ServiceManager.cpp b/cmds/servicemanager/ServiceManager.cpp
index 2d2af3c..141171b 100644
--- a/cmds/servicemanager/ServiceManager.cpp
+++ b/cmds/servicemanager/ServiceManager.cpp
@@ -314,7 +314,7 @@
     if (listeners.empty()) {
         *it = mNameToCallback.erase(*it);
     } else {
-        it++;
+        (*it)++;
     }
 }
 
diff --git a/include/android/input.h b/include/android/input.h
index ce439c6..f51cd79 100644
--- a/include/android/input.h
+++ b/include/android/input.h
@@ -158,7 +158,10 @@
     AINPUT_EVENT_TYPE_KEY = 1,
 
     /** Indicates that the input event is a motion event. */
-    AINPUT_EVENT_TYPE_MOTION = 2
+    AINPUT_EVENT_TYPE_MOTION = 2,
+
+    /** Focus event */
+    AINPUT_EVENT_TYPE_FOCUS = 3,
 };
 
 /**
diff --git a/include/binder b/include/binder
deleted file mode 120000
index 35a022a..0000000
--- a/include/binder
+++ /dev/null
@@ -1 +0,0 @@
-../libs/binder/include/binder/
\ No newline at end of file
diff --git a/include/binder/Binder.h b/include/binder/Binder.h
new file mode 120000
index 0000000..0fc6db7
--- /dev/null
+++ b/include/binder/Binder.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/Binder.h
\ No newline at end of file
diff --git a/include/binder/BinderService.h b/include/binder/BinderService.h
new file mode 120000
index 0000000..370b260
--- /dev/null
+++ b/include/binder/BinderService.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/BinderService.h
\ No newline at end of file
diff --git a/include/binder/IBinder.h b/include/binder/IBinder.h
new file mode 120000
index 0000000..93a6219
--- /dev/null
+++ b/include/binder/IBinder.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/IBinder.h
\ No newline at end of file
diff --git a/include/binder/IInterface.h b/include/binder/IInterface.h
new file mode 120000
index 0000000..8579878
--- /dev/null
+++ b/include/binder/IInterface.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/IInterface.h
\ No newline at end of file
diff --git a/include/binder/IMemory.h b/include/binder/IMemory.h
new file mode 120000
index 0000000..5171c08
--- /dev/null
+++ b/include/binder/IMemory.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/IMemory.h
\ No newline at end of file
diff --git a/include/binder/IPCThreadState.h b/include/binder/IPCThreadState.h
new file mode 120000
index 0000000..ecd4f81
--- /dev/null
+++ b/include/binder/IPCThreadState.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/IPCThreadState.h
\ No newline at end of file
diff --git a/include/binder/IServiceManager.h b/include/binder/IServiceManager.h
new file mode 120000
index 0000000..33d18cc
--- /dev/null
+++ b/include/binder/IServiceManager.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/IServiceManager.h
\ No newline at end of file
diff --git a/include/binder/MemoryDealer.h b/include/binder/MemoryDealer.h
new file mode 120000
index 0000000..71881fb
--- /dev/null
+++ b/include/binder/MemoryDealer.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/MemoryDealer.h
\ No newline at end of file
diff --git a/include/binder/MemoryHeapBase.h b/include/binder/MemoryHeapBase.h
new file mode 120000
index 0000000..8fb51cc
--- /dev/null
+++ b/include/binder/MemoryHeapBase.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/MemoryHeapBase.h
\ No newline at end of file
diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
new file mode 120000
index 0000000..23492be
--- /dev/null
+++ b/include/binder/Parcel.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/Parcel.h
\ No newline at end of file
diff --git a/include/binder/ParcelFileDescriptor.h b/include/binder/ParcelFileDescriptor.h
new file mode 120000
index 0000000..777bd49
--- /dev/null
+++ b/include/binder/ParcelFileDescriptor.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/ParcelFileDescriptor.h
\ No newline at end of file
diff --git a/include/binder/Parcelable.h b/include/binder/Parcelable.h
new file mode 120000
index 0000000..438e223
--- /dev/null
+++ b/include/binder/Parcelable.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/Parcelable.h
\ No newline at end of file
diff --git a/include/binder/PermissionCache.h b/include/binder/PermissionCache.h
new file mode 120000
index 0000000..e910c12
--- /dev/null
+++ b/include/binder/PermissionCache.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/PermissionCache.h
\ No newline at end of file
diff --git a/include/binder/PersistableBundle.h b/include/binder/PersistableBundle.h
new file mode 120000
index 0000000..785f2b4
--- /dev/null
+++ b/include/binder/PersistableBundle.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/PersistableBundle.h
\ No newline at end of file
diff --git a/include/binder/ProcessState.h b/include/binder/ProcessState.h
new file mode 120000
index 0000000..4cbe7a5
--- /dev/null
+++ b/include/binder/ProcessState.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/ProcessState.h
\ No newline at end of file
diff --git a/include/binder/Stability.h b/include/binder/Stability.h
new file mode 120000
index 0000000..9b431d2
--- /dev/null
+++ b/include/binder/Stability.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/Stability.h
\ No newline at end of file
diff --git a/include/binder/Status.h b/include/binder/Status.h
new file mode 120000
index 0000000..ccb994e
--- /dev/null
+++ b/include/binder/Status.h
@@ -0,0 +1 @@
+../../libs/binder/include/binder/Status.h
\ No newline at end of file
diff --git a/include/input/Input.h b/include/input/Input.h
index cbd1a41..f871847 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -31,8 +31,8 @@
 #include <utils/RefBase.h>
 #include <utils/Timers.h>
 #include <utils/Vector.h>
-
 #include <limits>
+#include <queue>
 
 /*
  * Additional private constants not defined in ndk/ui/input.h.
@@ -167,6 +167,8 @@
 class Parcel;
 #endif
 
+const char* inputEventTypeToString(int32_t type);
+
 /*
  * Flags that flow alongside events in the input dispatch system to help with certain
  * policy decisions such as waking from device sleep.
@@ -687,6 +689,28 @@
 };
 
 /*
+ * Focus events.
+ */
+class FocusEvent : public InputEvent {
+public:
+    virtual ~FocusEvent() {}
+
+    virtual int32_t getType() const override { return AINPUT_EVENT_TYPE_FOCUS; }
+
+    inline bool getHasFocus() const { return mHasFocus; }
+
+    inline bool getInTouchMode() const { return mInTouchMode; }
+
+    void initialize(bool hasFocus, bool inTouchMode);
+
+    void initialize(const FocusEvent& from);
+
+protected:
+    bool mHasFocus;
+    bool mInTouchMode;
+};
+
+/*
  * Input event factory.
  */
 class InputEventFactoryInterface {
@@ -698,6 +722,7 @@
 
     virtual KeyEvent* createKeyEvent() = 0;
     virtual MotionEvent* createMotionEvent() = 0;
+    virtual FocusEvent* createFocusEvent() = 0;
 };
 
 /*
@@ -709,12 +734,14 @@
     PreallocatedInputEventFactory() { }
     virtual ~PreallocatedInputEventFactory() { }
 
-    virtual KeyEvent* createKeyEvent() { return & mKeyEvent; }
-    virtual MotionEvent* createMotionEvent() { return & mMotionEvent; }
+    virtual KeyEvent* createKeyEvent() override { return &mKeyEvent; }
+    virtual MotionEvent* createMotionEvent() override { return &mMotionEvent; }
+    virtual FocusEvent* createFocusEvent() override { return &mFocusEvent; }
 
 private:
     KeyEvent mKeyEvent;
     MotionEvent mMotionEvent;
+    FocusEvent mFocusEvent;
 };
 
 /*
@@ -725,16 +752,18 @@
     explicit PooledInputEventFactory(size_t maxPoolSize = 20);
     virtual ~PooledInputEventFactory();
 
-    virtual KeyEvent* createKeyEvent();
-    virtual MotionEvent* createMotionEvent();
+    virtual KeyEvent* createKeyEvent() override;
+    virtual MotionEvent* createMotionEvent() override;
+    virtual FocusEvent* createFocusEvent() override;
 
     void recycle(InputEvent* event);
 
 private:
     const size_t mMaxPoolSize;
 
-    Vector<KeyEvent*> mKeyEventPool;
-    Vector<MotionEvent*> mMotionEventPool;
+    std::queue<std::unique_ptr<KeyEvent>> mKeyEventPool;
+    std::queue<std::unique_ptr<MotionEvent>> mMotionEventPool;
+    std::queue<std::unique_ptr<FocusEvent>> mFocusEventPool;
 };
 
 } // namespace android
diff --git a/include/input/InputTransport.h b/include/input/InputTransport.h
index 94d90ad..ae47438 100644
--- a/include/input/InputTransport.h
+++ b/include/input/InputTransport.h
@@ -64,6 +64,7 @@
         KEY,
         MOTION,
         FINISHED,
+        FOCUS,
     };
 
     struct Header {
@@ -92,9 +93,7 @@
             uint32_t empty2;
             nsecs_t downTime __attribute__((aligned(8)));
 
-            inline size_t size() const {
-                return sizeof(Key);
-            }
+            inline size_t size() const { return sizeof(Key); }
         } key;
 
         struct Motion {
@@ -110,7 +109,7 @@
             int32_t metaState;
             int32_t buttonState;
             MotionClassification classification; // base type: uint8_t
-            uint8_t empty2[3];
+            uint8_t empty2[3];                   // 3 bytes to fill gap created by classification
             int32_t edgeFlags;
             nsecs_t downTime __attribute__((aligned(8)));
             float xOffset;
@@ -121,11 +120,16 @@
             float yCursorPosition;
             uint32_t pointerCount;
             uint32_t empty3;
-            // Note that PointerCoords requires 8 byte alignment.
+            /**
+             * The "pointers" field must be the last field of the struct InputMessage.
+             * When we send the struct InputMessage across the socket, we are not
+             * writing the entire "pointers" array, but only the pointerCount portion
+             * of it as an optimization. Adding a field after "pointers" would break this.
+             */
             struct Pointer {
                 PointerProperties properties;
                 PointerCoords coords;
-            } pointers[MAX_POINTERS];
+            } pointers[MAX_POINTERS] __attribute__((aligned(8)));
 
             int32_t getActionId() const {
                 uint32_t index = (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
@@ -141,12 +145,19 @@
 
         struct Finished {
             uint32_t seq;
-            bool handled;
+            uint32_t handled; // actually a bool, but we must maintain 8-byte alignment
 
-            inline size_t size() const {
-                return sizeof(Finished);
-            }
+            inline size_t size() const { return sizeof(Finished); }
         } finished;
+
+        struct Focus {
+            uint32_t seq;
+            // The following two fields take up 4 bytes total
+            uint16_t hasFocus;    // actually a bool
+            uint16_t inTouchMode; // actually a bool, but we must maintain 8-byte alignment
+
+            inline size_t size() const { return sizeof(Focus); }
+        } focus;
     } __attribute__((aligned(8))) body;
 
     bool isValid(size_t actualSize) const;
@@ -289,6 +300,15 @@
                                 uint32_t pointerCount, const PointerProperties* pointerProperties,
                                 const PointerCoords* pointerCoords);
 
+    /* Publishes a focus event to the input channel.
+     *
+     * Returns OK on success.
+     * Returns WOULD_BLOCK if the channel is full.
+     * Returns DEAD_OBJECT if the channel's peer has been closed.
+     * Other errors probably indicate that the channel is broken.
+     */
+    status_t publishFocusEvent(uint32_t seq, bool hasFocus, bool inTouchMode);
+
     /* Receives the finished signal from the consumer in reply to the original dispatch signal.
      * If a signal was received, returns the message sequence number,
      * and whether the consumer handled the message.
@@ -344,8 +364,8 @@
      * Returns NO_MEMORY if the event could not be created.
      * Other errors probably indicate that the channel is broken.
      */
-    status_t consume(InputEventFactoryInterface* factory, bool consumeBatches,
-            nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent);
+    status_t consume(InputEventFactoryInterface* factory, bool consumeBatches, nsecs_t frameTime,
+                     uint32_t* outSeq, InputEvent** outEvent);
 
     /* Sends a finished signal to the publisher to inform it that the message
      * with the specified sequence number has finished being process and whether
@@ -516,6 +536,7 @@
     static void rewriteMessage(TouchState& state, InputMessage& msg);
     static void initializeKeyEvent(KeyEvent* event, const InputMessage* msg);
     static void initializeMotionEvent(MotionEvent* event, const InputMessage* msg);
+    static void initializeFocusEvent(FocusEvent* event, const InputMessage* msg);
     static void addSample(MotionEvent* event, const InputMessage* msg);
     static bool canAddSample(const Batch& batch, const InputMessage* msg);
     static ssize_t findSampleNoLaterThan(const Batch& batch, nsecs_t time);
diff --git a/include/ui b/include/ui
deleted file mode 120000
index 2fb3147..0000000
--- a/include/ui
+++ /dev/null
@@ -1 +0,0 @@
-../libs/ui/include/ui
\ No newline at end of file
diff --git a/include/ui/DisplayInfo.h b/include/ui/DisplayInfo.h
new file mode 120000
index 0000000..9a195ea
--- /dev/null
+++ b/include/ui/DisplayInfo.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/DisplayInfo.h
\ No newline at end of file
diff --git a/include/ui/FloatRect.h b/include/ui/FloatRect.h
new file mode 120000
index 0000000..d7bd737
--- /dev/null
+++ b/include/ui/FloatRect.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/FloatRect.h
\ No newline at end of file
diff --git a/include/ui/PixelFormat.h b/include/ui/PixelFormat.h
new file mode 120000
index 0000000..4085433
--- /dev/null
+++ b/include/ui/PixelFormat.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/PixelFormat.h
\ No newline at end of file
diff --git a/include/ui/Point.h b/include/ui/Point.h
new file mode 120000
index 0000000..443938b
--- /dev/null
+++ b/include/ui/Point.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/Point.h
\ No newline at end of file
diff --git a/include/ui/PublicFormat.h b/include/ui/PublicFormat.h
new file mode 120000
index 0000000..7984c0e
--- /dev/null
+++ b/include/ui/PublicFormat.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/PublicFormat.h
\ No newline at end of file
diff --git a/include/ui/Rect.h b/include/ui/Rect.h
new file mode 120000
index 0000000..a99c5f2
--- /dev/null
+++ b/include/ui/Rect.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/Rect.h
\ No newline at end of file
diff --git a/include/ui/Region.h b/include/ui/Region.h
new file mode 120000
index 0000000..2e46e0f
--- /dev/null
+++ b/include/ui/Region.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/Region.h
\ No newline at end of file
diff --git a/include/ui/Size.h b/include/ui/Size.h
new file mode 120000
index 0000000..c0da99b
--- /dev/null
+++ b/include/ui/Size.h
@@ -0,0 +1 @@
+../../libs/ui/include/ui/Size.h
\ No newline at end of file
diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index 4f47db1..bac8b66 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -280,19 +280,31 @@
         std::condition_variable mCv;
     };
 
+    // Simple RAII object to ensure a function call immediately before going out of scope
+    class Defer {
+    public:
+        Defer(std::function<void()>&& f) : mF(std::move(f)) {}
+        ~Defer() { mF(); }
+    private:
+        std::function<void()> mF;
+    };
+
     const std::string name = String8(name16).c_str();
 
     sp<IBinder> out;
     if (!mTheRealServiceManager->getService(name, &out).isOk()) {
         return nullptr;
     }
-    if(out != nullptr) return out;
+    if (out != nullptr) return out;
 
     sp<Waiter> waiter = new Waiter;
     if (!mTheRealServiceManager->registerForNotifications(
             name, waiter).isOk()) {
         return nullptr;
     }
+    Defer unregister ([&] {
+        mTheRealServiceManager->unregisterForNotifications(name, waiter);
+    });
 
     while(true) {
         {
@@ -316,7 +328,7 @@
         if (!mTheRealServiceManager->getService(name, &out).isOk()) {
             return nullptr;
         }
-        if(out != nullptr) return out;
+        if (out != nullptr) return out;
 
         ALOGW("Waited one second for %s", name.c_str());
     }
diff --git a/libs/binder/Status.cpp b/libs/binder/Status.cpp
index 0ad99ce..674f065 100644
--- a/libs/binder/Status.cpp
+++ b/libs/binder/Status.cpp
@@ -232,9 +232,10 @@
         ret.append("No error");
     } else {
         ret.appendFormat("Status(%d, %s): '", mException, exceptionToString(mException).c_str());
-        if (mException == EX_SERVICE_SPECIFIC ||
-            mException == EX_TRANSACTION_FAILED) {
+        if (mException == EX_SERVICE_SPECIFIC) {
             ret.appendFormat("%d: ", mErrorCode);
+        } else if (mException == EX_TRANSACTION_FAILED) {
+            ret.appendFormat("%s: ", statusToString(mErrorCode).c_str());
         }
         ret.append(String8(mMessage));
         ret.append("'");
diff --git a/libs/binder/include/binder/IInterface.h b/libs/binder/include/binder/IInterface.h
index 28ffa48..79d9b79 100644
--- a/libs/binder/include/binder/IInterface.h
+++ b/libs/binder/include/binder/IInterface.h
@@ -38,12 +38,32 @@
 
 // ----------------------------------------------------------------------
 
+/**
+ * If this is a local object and the descriptor matches, this will return the
+ * actual local object which is implementing the interface. Otherwise, this will
+ * return a proxy to the interface without checking the interface descriptor.
+ * This means that subsequent calls may fail with BAD_TYPE.
+ */
 template<typename INTERFACE>
 inline sp<INTERFACE> interface_cast(const sp<IBinder>& obj)
 {
     return INTERFACE::asInterface(obj);
 }
 
+/**
+ * This is the same as interface_cast, except that it always checks to make sure
+ * the descriptor matches, and if it doesn't match, it will return nullptr.
+ */
+template<typename INTERFACE>
+inline sp<INTERFACE> checked_interface_cast(const sp<IBinder>& obj)
+{
+    if (obj->getInterfaceDescriptor() != INTERFACE::descriptor) {
+        return nullptr;
+    }
+
+    return interface_cast<INTERFACE>(obj);
+}
+
 // ----------------------------------------------------------------------
 
 template<typename INTERFACE>
@@ -89,7 +109,27 @@
 
 
 #define __IINTF_CONCAT(x, y) (x ## y)
+
+#ifndef DO_NOT_CHECK_MANUAL_BINDER_INTERFACES
+
 #define IMPLEMENT_META_INTERFACE(INTERFACE, NAME)                       \
+    static_assert(internal::allowedManualInterface(NAME),               \
+                  "b/64223827: Manually written binder interfaces are " \
+                  "considered error prone and frequently have bugs. "   \
+                  "The preferred way to add interfaces is to define "   \
+                  "an .aidl file to auto-generate the interface. If "   \
+                  "an interface must be manually written, add its "     \
+                  "name to the whitelist.");                            \
+    DO_NOT_DIRECTLY_USE_ME_IMPLEMENT_META_INTERFACE(INTERFACE, NAME)    \
+
+#else
+
+#define IMPLEMENT_META_INTERFACE(INTERFACE, NAME)                       \
+    DO_NOT_DIRECTLY_USE_ME_IMPLEMENT_META_INTERFACE(INTERFACE, NAME)    \
+
+#endif
+
+#define DO_NOT_DIRECTLY_USE_ME_IMPLEMENT_META_INTERFACE(INTERFACE, NAME)\
     const ::android::StaticString16                                     \
         I##INTERFACE##_descriptor_static_str16(__IINTF_CONCAT(u, NAME));\
     const ::android::String16 I##INTERFACE::descriptor(                 \
@@ -172,6 +212,122 @@
 
 // ----------------------------------------------------------------------
 
+namespace internal {
+constexpr const char* const kManualInterfaces[] = {
+  "android.app.IActivityManager",
+  "android.app.IUidObserver",
+  "android.drm.IDrm",
+  "android.dvr.IVsyncCallback",
+  "android.dvr.IVsyncService",
+  "android.gfx.tests.ICallback",
+  "android.gfx.tests.IIPCTest",
+  "android.gfx.tests.ISafeInterfaceTest",
+  "android.graphicsenv.IGpuService",
+  "android.gui.DisplayEventConnection",
+  "android.gui.IConsumerListener",
+  "android.gui.IGraphicBufferConsumer",
+  "android.gui.IRegionSamplingListener",
+  "android.gui.ITransactionComposerListener",
+  "android.gui.SensorEventConnection",
+  "android.gui.SensorServer",
+  "android.hardware.ICamera",
+  "android.hardware.ICameraClient",
+  "android.hardware.ICameraRecordingProxy",
+  "android.hardware.ICameraRecordingProxyListener",
+  "android.hardware.ICrypto",
+  "android.hardware.IOMXObserver",
+  "android.hardware.ISoundTrigger",
+  "android.hardware.ISoundTriggerClient",
+  "android.hardware.ISoundTriggerHwService",
+  "android.hardware.IStreamListener",
+  "android.hardware.IStreamSource",
+  "android.input.IInputFlinger",
+  "android.input.ISetInputWindowsListener",
+  "android.media.IAudioFlinger",
+  "android.media.IAudioFlingerClient",
+  "android.media.IAudioPolicyService",
+  "android.media.IAudioPolicyServiceClient",
+  "android.media.IAudioService",
+  "android.media.IAudioTrack",
+  "android.media.IDataSource",
+  "android.media.IDrmClient",
+  "android.media.IEffect",
+  "android.media.IEffectClient",
+  "android.media.IMediaAnalyticsService",
+  "android.media.IMediaCodecList",
+  "android.media.IMediaDrmService",
+  "android.media.IMediaExtractor",
+  "android.media.IMediaExtractorService",
+  "android.media.IMediaHTTPConnection",
+  "android.media.IMediaHTTPService",
+  "android.media.IMediaLogService",
+  "android.media.IMediaMetadataRetriever",
+  "android.media.IMediaPlayer",
+  "android.media.IMediaPlayerClient",
+  "android.media.IMediaPlayerService",
+  "android.media.IMediaRecorder",
+  "android.media.IMediaRecorderClient",
+  "android.media.IMediaResourceMonitor",
+  "android.media.IMediaSource",
+  "android.media.IRemoteDisplay",
+  "android.media.IRemoteDisplayClient",
+  "android.media.IResourceManagerClient",
+  "android.media.IResourceManagerService",
+  "android.os.IComplexTypeInterface",
+  "android.os.IPermissionController",
+  "android.os.IPingResponder",
+  "android.os.IPowerManager",
+  "android.os.IProcessInfoService",
+  "android.os.ISchedulingPolicyService",
+  "android.os.IStringConstants",
+  "android.os.storage.IObbActionListener",
+  "android.os.storage.IStorageEventListener",
+  "android.os.storage.IStorageManager",
+  "android.os.storage.IStorageShutdownObserver",
+  "android.service.vr.IPersistentVrStateCallbacks",
+  "android.service.vr.IVrManager",
+  "android.service.vr.IVrStateCallbacks",
+  "android.ui.ISurfaceComposer",
+  "android.ui.ISurfaceComposerClient",
+  "android.utils.IMemory",
+  "android.utils.IMemoryHeap",
+  "com.android.car.procfsinspector.IProcfsInspector",
+  "com.android.internal.app.IAppOpsCallback",
+  "com.android.internal.app.IAppOpsService",
+  "com.android.internal.app.IBatteryStats",
+  "com.android.internal.os.IResultReceiver",
+  "com.android.internal.os.IShellCallback",
+  "drm.IDrmManagerService",
+  "drm.IDrmServiceListener",
+  "IAAudioClient",
+  "IAAudioService",
+  "VtsFuzzer",
+  nullptr,
+};
+
+constexpr const char* const kDownstreamManualInterfaces[] = {
+  // Add downstream interfaces here.
+  nullptr,
+};
+
+constexpr bool equals(const char* a, const char* b) {
+  if (*a != *b) return false;
+  if (*a == '\0') return true;
+  return equals(a + 1, b + 1);
+}
+
+constexpr bool inList(const char* a, const char* const* whitelist) {
+  if (*whitelist == nullptr) return false;
+  if (equals(a, *whitelist)) return true;
+  return inList(a, whitelist + 1);
+}
+
+constexpr bool allowedManualInterface(const char* name) {
+  return inList(name, kManualInterfaces) ||
+         inList(name, kDownstreamManualInterfaces);
+}
+
+} // namespace internal
 } // namespace android
 
 #endif // ANDROID_IINTERFACE_H
diff --git a/libs/binder/ndk/include_ndk/android/binder_ibinder.h b/libs/binder/ndk/include_ndk/android/binder_ibinder.h
index 4d5c044..4560f22 100644
--- a/libs/binder/ndk/include_ndk/android/binder_ibinder.h
+++ b/libs/binder/ndk/include_ndk/android/binder_ibinder.h
@@ -34,6 +34,12 @@
 #include <android/binder_status.h>
 
 __BEGIN_DECLS
+
+#ifndef __ANDROID_API__
+#error Android builds must be compiled against a specific API. If this is an \
+ android platform host build, you must use libbinder_ndk_host_user.
+#endif
+
 #if __ANDROID_API__ >= 29
 
 // Also see TF_* in kernel's binder.h
diff --git a/libs/binder/ndk/include_ndk/android/binder_parcel_utils.h b/libs/binder/ndk/include_ndk/android/binder_parcel_utils.h
index f3bc31b..7871667 100644
--- a/libs/binder/ndk/include_ndk/android/binder_parcel_utils.h
+++ b/libs/binder/ndk/include_ndk/android/binder_parcel_utils.h
@@ -441,6 +441,42 @@
 }
 
 /**
+ * Writes a ScopedFileDescriptor object inside a std::vector<ScopedFileDescriptor> at index 'index'
+ * to 'parcel'.
+ */
+template <>
+inline binder_status_t AParcel_writeStdVectorParcelableElement<ScopedFileDescriptor>(
+        AParcel* parcel, const void* vectorData, size_t index) {
+    const std::vector<ScopedFileDescriptor>* vector =
+            static_cast<const std::vector<ScopedFileDescriptor>*>(vectorData);
+    int writeFd = vector->at(index).get();
+    if (writeFd < 0) {
+        return STATUS_UNEXPECTED_NULL;
+    }
+    return AParcel_writeParcelFileDescriptor(parcel, writeFd);
+}
+
+/**
+ * Reads a ScopedFileDescriptor object inside a std::vector<ScopedFileDescriptor> at index 'index'
+ * from 'parcel'.
+ */
+template <>
+inline binder_status_t AParcel_readStdVectorParcelableElement<ScopedFileDescriptor>(
+        const AParcel* parcel, void* vectorData, size_t index) {
+    std::vector<ScopedFileDescriptor>* vector =
+            static_cast<std::vector<ScopedFileDescriptor>*>(vectorData);
+    int readFd;
+    binder_status_t status = AParcel_readParcelFileDescriptor(parcel, &readFd);
+    if (status == STATUS_OK) {
+        if (readFd < 0) {
+            return STATUS_UNEXPECTED_NULL;
+        }
+        vector->at(index).set(readFd);
+    }
+    return status;
+}
+
+/**
  * Convenience API for writing a std::vector<P>
  */
 template <typename P>
diff --git a/libs/dumputils/dump_utils.cpp b/libs/dumputils/dump_utils.cpp
index 56b94c1..0477801 100644
--- a/libs/dumputils/dump_utils.cpp
+++ b/libs/dumputils/dump_utils.cpp
@@ -16,7 +16,9 @@
 #include <set>
 
 #include <android-base/file.h>
+#include <android-base/properties.h>
 #include <android-base/stringprintf.h>
+#include <android-base/strings.h>
 #include <android/hidl/manager/1.0/IServiceManager.h>
 #include <dumputils/dump_utils.h>
 #include <log/log.h>
@@ -68,13 +70,34 @@
         NULL,
 };
 
-bool should_dump_hal_interface(const char* interface) {
+/* list of extra hal interfaces to dump containing process during native dumps */
+// This is filled when dumpstate is called.
+static std::set<const std::string> extra_hal_interfaces_to_dump;
+
+static void read_extra_hals_to_dump_from_property() {
+    // extra hals to dump are already filled
+    if (extra_hal_interfaces_to_dump.size() > 0) {
+        return;
+    }
+    std::string value = android::base::GetProperty("ro.dump.hals.extra", "");
+    std::vector<std::string> tokens = android::base::Split(value, ",");
+    for (const auto &token : tokens) {
+        std::string trimmed_token = android::base::Trim(token);
+        if (trimmed_token.length() == 0) {
+            continue;
+        }
+        extra_hal_interfaces_to_dump.insert(trimmed_token);
+    }
+}
+
+// check if interface is included in either default hal list or extra hal list
+bool should_dump_hal_interface(const std::string& interface) {
     for (const char** i = hal_interfaces_to_dump; *i; i++) {
-        if (!strcmp(*i, interface)) {
+        if (interface == *i) {
             return true;
         }
     }
-    return false;
+    return extra_hal_interfaces_to_dump.find(interface) != extra_hal_interfaces_to_dump.end();
 }
 
 bool should_dump_native_traces(const char* path) {
@@ -94,13 +117,15 @@
     sp<IServiceManager> manager = IServiceManager::getService();
     std::set<int> pids;
 
+    read_extra_hals_to_dump_from_property();
+
     Return<void> ret = manager->debugDump([&](auto& hals) {
         for (const auto &info : hals) {
             if (info.pid == static_cast<int>(IServiceManager::PidConstant::NO_PID)) {
                 continue;
             }
 
-            if (!should_dump_hal_interface(info.interfaceName.c_str())) {
+            if (!should_dump_hal_interface(info.interfaceName)) {
                 continue;
             }
 
diff --git a/libs/gralloc/types/Android.bp b/libs/gralloc/types/Android.bp
new file mode 100644
index 0000000..cb5305f
--- /dev/null
+++ b/libs/gralloc/types/Android.bp
@@ -0,0 +1,54 @@
+// Copyright (C) 2019 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 {
+    name: "libgralloctypes",
+    defaults: ["libbinder_ndk_host_user"],
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-enum-compare",
+    ],
+    host_supported: true,
+
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+
+    srcs: [
+        "Gralloc4.cpp"
+    ],
+
+    shared_libs: [
+        "android.hardware.graphics.mapper@4.0",
+        "libhidlbase",
+        "liblog",
+        "vintf-graphics-common-ndk_platform",
+    ],
+
+    export_shared_lib_headers: [
+        "android.hardware.graphics.mapper@4.0",
+        "vintf-graphics-common-ndk_platform",
+    ],
+
+    export_include_dirs: [
+        "include",
+    ],
+
+    sanitize: {
+        misc_undefined: ["integer"],
+    },
+}
diff --git a/libs/gralloc/types/Gralloc4.cpp b/libs/gralloc/types/Gralloc4.cpp
new file mode 100644
index 0000000..0330dac
--- /dev/null
+++ b/libs/gralloc/types/Gralloc4.cpp
@@ -0,0 +1,696 @@
+/*
+ * Copyright 2019 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 <cstring>
+#include <cinttypes>
+#include <limits>
+
+#include <hidl/HidlSupport.h>
+#include <log/log.h>
+
+#include "gralloctypes/Gralloc4.h"
+
+using android::hardware::hidl_vec;
+
+using ::aidl::android::hardware::graphics::common::BlendMode;
+using ::aidl::android::hardware::graphics::common::Dataspace;
+using ::aidl::android::hardware::graphics::common::PlaneLayout;
+using ::aidl::android::hardware::graphics::common::PlaneLayoutComponent;
+using ::aidl::android::hardware::graphics::common::ExtendableType;
+using ::aidl::android::hardware::graphics::common::Rect;
+using ::aidl::android::hardware::graphics::common::StandardMetadataType;
+
+using MetadataType = ::android::hardware::graphics::mapper::V4_0::IMapper::MetadataType;
+
+namespace android {
+
+namespace gralloc4 {
+
+static inline bool hasAdditionOverflow(size_t a, size_t b) {
+    return a > SIZE_MAX - b;
+}
+
+/**
+ * OutputHidlVec represents the hidl_vec that is outputed when a type is encoded into a byte stream.
+ * This class is used to track the current state of a hidl_vec as it is filled with the encoded
+ * byte stream.
+ *
+ * This type is needed because hidl_vec's resize() allocates a new backing array every time.
+ * This type does not need an copies and only needs one resize operation.
+ */
+class OutputHidlVec {
+public:
+    OutputHidlVec(hidl_vec<uint8_t>* vec)
+        : mVec(vec) {}
+
+    status_t resize() {
+        if (!mVec) {
+            return BAD_VALUE;
+        }
+        mVec->resize(mNeededResize);
+        return NO_ERROR;
+    }
+
+    status_t encode(const uint8_t* data, size_t size) {
+        if (!mVec) {
+            return BAD_VALUE;
+        }
+        if (mVec->size() == 0) {
+            if (hasAdditionOverflow(mNeededResize, size)) {
+                clear();
+                return BAD_VALUE;
+            }
+            mNeededResize += size;
+            return NO_ERROR;
+        }
+
+        if (hasAdditionOverflow(mOffset, size) || (mVec->size() < size + mOffset)) {
+            clear();
+            return BAD_VALUE;
+        }
+
+        std::copy(data, data + size, mVec->data() + mOffset);
+
+        mOffset += size;
+        return NO_ERROR;
+    }
+
+    void clear() {
+        if (mVec) {
+            mVec->resize(0);
+        }
+        mNeededResize = 0;
+        mOffset = 0;
+    }
+
+private:
+    hidl_vec<uint8_t>* mVec;
+    size_t mNeededResize = 0;
+    size_t mOffset = 0;
+};
+
+/**
+ * InputHidlVec represents the hidl_vec byte stream that is inputed when a type is decoded.
+ * This class is used to track the current index of the byte stream of the hidl_vec as it is
+ * decoded.
+ */
+class InputHidlVec {
+public:
+    InputHidlVec(const hidl_vec<uint8_t>* vec)
+        : mVec(vec) {}
+
+    status_t decode(uint8_t* data, size_t size) {
+        if (!mVec || hasAdditionOverflow(mOffset, size) || mOffset + size > mVec->size()) {
+            return BAD_VALUE;
+        }
+
+        std::copy(mVec->data() + mOffset, mVec->data() + mOffset + size, data);
+
+        mOffset += size;
+        return NO_ERROR;
+    }
+
+    status_t decode(std::string* string, size_t size) {
+        if (!mVec || hasAdditionOverflow(mOffset, size) || mOffset + size > mVec->size()) {
+            return BAD_VALUE;
+        }
+
+        string->assign(mVec->data() + mOffset, mVec->data() + mOffset + size);
+
+        mOffset += size;
+        return NO_ERROR;
+    }
+
+    bool hasRemainingData() {
+        if (!mVec) {
+            return false;
+        }
+        return mVec->size() - mOffset;
+    }
+
+private:
+    const hidl_vec<uint8_t>* mVec;
+    size_t mOffset = 0;
+};
+
+/**
+ * EncodeHelper is a function type that encodes T into the OutputHidlVec.
+ */
+template<class T>
+using EncodeHelper = status_t(*)(const T&, OutputHidlVec*);
+
+/**
+ * DecodeHelper is a function type that decodes InputHidlVec into T.
+ */
+template<class T>
+using DecodeHelper = status_t(*)(InputHidlVec*, T*);
+
+/**
+ * ErrorHandler is a function type that is called when the corresponding DecodeHelper function
+ * fails. ErrorHandler cleans up the object T so the caller doesn't receive a partially created
+ * T.
+ */
+template<class T>
+using ErrorHandler = void(*)(T*);
+
+/**
+ * encode is the main encoding function. It takes in T and uses the encodeHelper function to turn T
+ * into the hidl_vec byte stream.
+ *
+ * This function first calls the encodeHelper function to determine how large the hidl_vec
+ * needs to be. It resizes the hidl_vec. Finally, it reruns the encodeHelper function which
+ * encodes T into the hidl_vec byte stream.
+ */
+template <class T>
+status_t encode(const T& input, hidl_vec<uint8_t>* output, EncodeHelper<T> encodeHelper) {
+    OutputHidlVec outputHidlVec{output};
+    status_t err = encodeHelper(input, &outputHidlVec);
+    if (err) {
+        return err;
+    }
+
+    err = outputHidlVec.resize();
+    if (err) {
+        return err;
+    }
+
+    return encodeHelper(input, &outputHidlVec);
+}
+
+/**
+ * decode is the main decode function. It takes in a hidl_vec and uses the decodeHelper function to
+ * turn the hidl_vec byte stream into T. If an error occurs, the errorHandler function cleans up
+ * T.
+ */
+template <class T>
+status_t decode(const hidl_vec<uint8_t>& input, T* output, DecodeHelper<T> decodeHelper,
+                ErrorHandler<T> errorHandler = nullptr) {
+    InputHidlVec inputHidlVec{&input};
+    status_t err = decodeHelper(&inputHidlVec, output);
+    if (err) {
+        return err;
+    }
+
+    err = inputHidlVec.hasRemainingData();
+    if (err) {
+        if (errorHandler) {
+            errorHandler(output);
+        }
+        return BAD_VALUE;
+    }
+
+    return NO_ERROR;
+}
+
+/**
+ * Private helper functions
+ */
+template <class T>
+status_t encodeInteger(const T& input, OutputHidlVec* output) {
+    static_assert(std::is_same<T, uint32_t>::value || std::is_same<T, int32_t>::value ||
+                  std::is_same<T, uint64_t>::value || std::is_same<T, int64_t>::value);
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    const uint8_t* tmp = reinterpret_cast<const uint8_t*>(&input);
+    return output->encode(tmp, sizeof(input));
+}
+
+template <class T>
+status_t decodeInteger(InputHidlVec* input, T* output) {
+    static_assert(std::is_same<T, uint32_t>::value || std::is_same<T, int32_t>::value ||
+                  std::is_same<T, uint64_t>::value || std::is_same<T, int64_t>::value);
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    uint8_t* tmp = reinterpret_cast<uint8_t*>(output);
+    return input->decode(tmp, sizeof(*output));
+}
+
+status_t encodeString(const std::string& input, OutputHidlVec* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    status_t err = encodeInteger<int64_t>(input.size(), output);
+    if (err) {
+        return err;
+    }
+
+    return output->encode(reinterpret_cast<const uint8_t*>(input.c_str()), input.size());
+}
+
+status_t decodeString(InputHidlVec* input, std::string* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    int64_t size = 0;
+    status_t err = decodeInteger<int64_t>(input, &size);
+    if (err || size < 0) {
+        return err;
+    }
+
+    return input->decode(output, size);
+}
+
+status_t encodeExtendableType(const ExtendableType& input, OutputHidlVec* output) {
+    status_t err = encodeString(input.name, output);
+    if (err) {
+        return err;
+    }
+
+    err = encodeInteger<int64_t>(input.value, output);
+    if (err) {
+        return err;
+    }
+
+    return NO_ERROR;
+}
+
+status_t decodeExtendableType(InputHidlVec* input, ExtendableType* output) {
+    status_t err = decodeString(input, &output->name);
+    if (err) {
+        return err;
+    }
+
+    err = decodeInteger<int64_t>(input, &output->value);
+    if (err) {
+        return err;
+    }
+
+    return NO_ERROR;
+}
+
+void clearExtendableType(ExtendableType* output) {
+    if (!output) {
+        return;
+    }
+    output->name.clear();
+    output->value = 0;
+}
+
+status_t encodeRect(const Rect& input, OutputHidlVec* output) {
+    status_t err = encodeInteger<int32_t>(static_cast<int32_t>(input.left), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int32_t>(static_cast<int32_t>(input.top), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int32_t>(static_cast<int32_t>(input.right), output);
+    if (err) {
+        return err;
+    }
+    return encodeInteger<int32_t>(static_cast<int32_t>(input.bottom), output);
+}
+
+status_t decodeRect(InputHidlVec* input, Rect* output) {
+    status_t err = decodeInteger<int32_t>(input, &output->left);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int32_t>(input, &output->top);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int32_t>(input, &output->right);
+    if (err) {
+        return err;
+    }
+    return decodeInteger<int32_t>(input, &output->bottom);
+}
+
+status_t encodePlaneLayoutComponent(const PlaneLayoutComponent& input, OutputHidlVec* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    status_t err = encodeExtendableType(input.type, output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int64_t>(input.offsetInBits), output);
+    if (err) {
+        return err;
+    }
+    return encodeInteger<int64_t>(static_cast<int64_t>(input.sizeInBits), output);
+}
+
+status_t decodePlaneLayoutComponent(InputHidlVec* input, PlaneLayoutComponent* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    status_t err = decodeExtendableType(input, &output->type);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->offsetInBits);
+    if (err) {
+        return err;
+    }
+    return decodeInteger<int64_t>(input, &output->sizeInBits);
+}
+
+status_t encodePlaneLayoutComponents(const std::vector<PlaneLayoutComponent>& input, OutputHidlVec* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    status_t err = encodeInteger<int64_t>(static_cast<int64_t>(input.size()), output);
+    if (err) {
+        return err;
+    }
+
+    for (const auto& planeLayoutComponent: input) {
+        err = encodePlaneLayoutComponent(planeLayoutComponent, output);
+        if (err) {
+            return err;
+        }
+    }
+
+    return NO_ERROR;
+}
+
+status_t decodePlaneLayoutComponents(InputHidlVec* input, std::vector<PlaneLayoutComponent>* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    int64_t size = 0;
+    status_t err = decodeInteger<int64_t>(input, &size);
+    if (err || size < 0) {
+        return err;
+    }
+
+    for (int i = 0; i < size; i++) {
+        output->emplace_back();
+        err = decodePlaneLayoutComponent(input, &output->back());
+        if (err) {
+            return err;
+        }
+    }
+    return NO_ERROR;
+}
+
+status_t encodePlaneLayout(const PlaneLayout& input, OutputHidlVec* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    status_t err = encodePlaneLayoutComponents(input.components, output);
+    if (err) {
+        return err;
+    }
+
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.offsetInBytes), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.sampleIncrementInBits), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.strideInBytes), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.widthInSamples), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.heightInSamples), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.totalSizeInBytes), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.horizontalSubsampling), output);
+    if (err) {
+        return err;
+    }
+    err = encodeInteger<int64_t>(static_cast<int32_t>(input.verticalSubsampling), output);
+    if (err) {
+        return err;
+    }
+
+    return encodeRect(input.crop, output);
+}
+
+status_t decodePlaneLayout(InputHidlVec* input, PlaneLayout* output) {
+    if (!output) {
+        return BAD_VALUE;
+    }
+
+    status_t err = decodePlaneLayoutComponents(input, &output->components);
+    if (err) {
+        return err;
+    }
+
+    err = decodeInteger<int64_t>(input, &output->offsetInBytes);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->sampleIncrementInBits);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->strideInBytes);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->widthInSamples);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->heightInSamples);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->totalSizeInBytes);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->horizontalSubsampling);
+    if (err) {
+        return err;
+    }
+    err = decodeInteger<int64_t>(input, &output->verticalSubsampling);
+    if (err) {
+        return err;
+    }
+
+    return decodeRect(input, &output->crop);
+}
+
+status_t encodePlaneLayoutsHelper(const std::vector<PlaneLayout>& planeLayouts, OutputHidlVec* outOutputHidlVec) {
+    status_t err = encodeInteger<int64_t>(static_cast<int64_t>(planeLayouts.size()), outOutputHidlVec);
+    if (err) {
+        return err;
+    }
+
+    for (const auto& planeLayout : planeLayouts) {
+        err = encodePlaneLayout(planeLayout, outOutputHidlVec);
+        if (err) {
+            return err;
+        }
+    }
+
+    return NO_ERROR;
+}
+
+status_t decodePlaneLayoutsHelper(InputHidlVec* inputHidlVec, std::vector<PlaneLayout>* outPlaneLayouts) {
+    int64_t size = 0;
+    status_t err = decodeInteger<int64_t>(inputHidlVec, &size);
+    if (err || size < 0) {
+        return err;
+    }
+
+    for (size_t i = 0; i < size; i++) {
+        outPlaneLayouts->emplace_back();
+        err = decodePlaneLayout(inputHidlVec, &outPlaneLayouts->back());
+        if (err) {
+            return err;
+        }
+    }
+    return NO_ERROR;
+}
+
+void clearPlaneLayouts(std::vector<PlaneLayout>* output) {
+    if (!output) {
+        return;
+    }
+    output->clear();
+}
+
+/**
+ * Public API functions
+ */
+bool isStandardMetadataType(const MetadataType& metadataType) {
+    return !std::strncmp(metadataType.name.c_str(), GRALLOC4_STANDARD_METADATA_TYPE, metadataType.name.size());
+}
+
+StandardMetadataType getStandardMetadataTypeValue(const MetadataType& metadataType) {
+    return static_cast<StandardMetadataType>(metadataType.value);
+}
+
+status_t encodeBufferId(uint64_t bufferId, hidl_vec<uint8_t>* outBufferId) {
+    return encode(bufferId, outBufferId, encodeInteger);
+}
+
+status_t decodeBufferId(const hidl_vec<uint8_t>& bufferId, uint64_t* outBufferId) {
+    return decode(bufferId, outBufferId, decodeInteger);
+}
+
+status_t encodeName(const std::string& name, hidl_vec<uint8_t>* outName) {
+    return encode(name, outName, encodeString);
+}
+
+status_t decodeName(const hidl_vec<uint8_t>& name, std::string* outName) {
+    return decode(name, outName, decodeString);
+}
+
+status_t encodeWidth(uint64_t width, hidl_vec<uint8_t>* outWidth) {
+    return encode(width, outWidth, encodeInteger);
+}
+
+status_t decodeWidth(const hidl_vec<uint8_t>& width, uint64_t* outWidth) {
+    return decode(width, outWidth, decodeInteger);
+}
+
+status_t encodeHeight(uint64_t height, hidl_vec<uint8_t>* outHeight) {
+    return encode(height, outHeight, encodeInteger);
+}
+
+status_t decodeHeight(const hidl_vec<uint8_t>& height, uint64_t* outHeight) {
+    return decode(height, outHeight, decodeInteger);
+}
+
+status_t encodeLayerCount(uint64_t layerCount, hidl_vec<uint8_t>* outLayerCount) {
+    return encode(layerCount, outLayerCount, encodeInteger);
+}
+
+status_t decodeLayerCount(const hidl_vec<uint8_t>& layerCount, uint64_t* outLayerCount) {
+    return decode(layerCount, outLayerCount, decodeInteger);
+}
+
+status_t encodePixelFormatRequested(const hardware::graphics::common::V1_2::PixelFormat& pixelFormatRequested,
+        hidl_vec<uint8_t>* outPixelFormatRequested) {
+    return encode(static_cast<int32_t>(pixelFormatRequested), outPixelFormatRequested, encodeInteger);
+}
+
+status_t decodePixelFormatRequested(const hidl_vec<uint8_t>& pixelFormatRequested,
+        hardware::graphics::common::V1_2::PixelFormat* outPixelFormatRequested) {
+    return decode(pixelFormatRequested, reinterpret_cast<int32_t*>(outPixelFormatRequested), decodeInteger);
+}
+
+status_t encodePixelFormatFourCC(uint32_t pixelFormatFourCC, hidl_vec<uint8_t>* outPixelFormatFourCC) {
+    return encode(pixelFormatFourCC, outPixelFormatFourCC, encodeInteger);
+}
+
+status_t decodePixelFormatFourCC(const hidl_vec<uint8_t>& pixelFormatFourCC, uint32_t* outPixelFormatFourCC) {
+    return decode(pixelFormatFourCC, outPixelFormatFourCC, decodeInteger);
+}
+
+status_t encodePixelFormatModifier(uint64_t pixelFormatModifier, hidl_vec<uint8_t>* outPixelFormatModifier) {
+    return encode(pixelFormatModifier, outPixelFormatModifier, encodeInteger);
+}
+
+status_t decodePixelFormatModifier(const hidl_vec<uint8_t>& pixelFormatModifier, uint64_t* outPixelFormatModifier) {
+    return decode(pixelFormatModifier, outPixelFormatModifier, decodeInteger);
+}
+
+status_t encodeUsage(uint64_t usage, hidl_vec<uint8_t>* outUsage) {
+    return encode(usage, outUsage, encodeInteger);
+}
+
+status_t decodeUsage(const hidl_vec<uint8_t>& usage, uint64_t* outUsage) {
+    return decode(usage, outUsage, decodeInteger);
+}
+
+status_t encodeAllocationSize(uint64_t allocationSize, hidl_vec<uint8_t>* outAllocationSize) {
+    return encode(allocationSize, outAllocationSize, encodeInteger);
+}
+
+status_t decodeAllocationSize(const hidl_vec<uint8_t>& allocationSize, uint64_t* outAllocationSize) {
+    return decode(allocationSize, outAllocationSize, decodeInteger);
+}
+
+status_t encodeProtectedContent(uint64_t protectedContent, hidl_vec<uint8_t>* outProtectedContent) {
+    return encode(protectedContent, outProtectedContent, encodeInteger);
+}
+
+status_t decodeProtectedContent(const hidl_vec<uint8_t>& protectedContent, uint64_t* outProtectedContent) {
+    return decode(protectedContent, outProtectedContent, decodeInteger);
+}
+
+status_t encodeCompression(const ExtendableType& compression, hidl_vec<uint8_t>* outCompression) {
+    return encode(compression, outCompression, encodeExtendableType);
+}
+
+status_t decodeCompression(const hidl_vec<uint8_t>& compression, ExtendableType* outCompression) {
+    return decode(compression, outCompression, decodeExtendableType, clearExtendableType);
+}
+
+status_t encodeInterlaced(const ExtendableType& interlaced, hidl_vec<uint8_t>* outInterlaced) {
+    return encode(interlaced, outInterlaced, encodeExtendableType);
+}
+
+status_t decodeInterlaced(const hidl_vec<uint8_t>& interlaced, ExtendableType* outInterlaced) {
+    return decode(interlaced, outInterlaced, decodeExtendableType, clearExtendableType);
+}
+
+status_t encodeChromaSiting(const ExtendableType& chromaSiting, hidl_vec<uint8_t>* outChromaSiting) {
+    return encode(chromaSiting, outChromaSiting, encodeExtendableType);
+}
+
+status_t decodeChromaSiting(const hidl_vec<uint8_t>& chromaSiting, ExtendableType* outChromaSiting) {
+    return decode(chromaSiting, outChromaSiting, decodeExtendableType, clearExtendableType);
+}
+
+status_t encodePlaneLayouts(const std::vector<PlaneLayout>& planeLayouts, hidl_vec<uint8_t>* outPlaneLayouts) {
+    return encode(planeLayouts, outPlaneLayouts, encodePlaneLayoutsHelper);
+}
+
+status_t decodePlaneLayouts(const hidl_vec<uint8_t>& planeLayouts, std::vector<PlaneLayout>* outPlaneLayouts) {
+    return decode(planeLayouts, outPlaneLayouts, decodePlaneLayoutsHelper, clearPlaneLayouts);
+}
+
+status_t encodeDataspace(const Dataspace& dataspace, hidl_vec<uint8_t>* outDataspace) {
+    return encode(static_cast<int32_t>(dataspace), outDataspace, encodeInteger);
+}
+
+status_t decodeDataspace(const hidl_vec<uint8_t>& dataspace, Dataspace* outDataspace) {
+    return decode(dataspace, reinterpret_cast<int32_t*>(outDataspace), decodeInteger);
+}
+
+status_t encodeBlendMode(const BlendMode& blendMode, hidl_vec<uint8_t>* outBlendMode) {
+    return encode(static_cast<int32_t>(blendMode), outBlendMode, encodeInteger);
+}
+
+status_t decodeBlendMode(const hidl_vec<uint8_t>& blendMode, BlendMode* outBlendMode) {
+    return decode(blendMode, reinterpret_cast<int32_t*>(outBlendMode), decodeInteger);
+}
+
+} // namespace gralloc4
+
+} // namespace android
diff --git a/libs/gralloc/types/fuzzer/Android.bp b/libs/gralloc/types/fuzzer/Android.bp
new file mode 100644
index 0000000..8444883
--- /dev/null
+++ b/libs/gralloc/types/fuzzer/Android.bp
@@ -0,0 +1,32 @@
+cc_fuzz {
+    name: "libgralloctypes_fuzzer",
+    defaults: ["libbinder_ndk_host_user"],
+    host_supported: true,
+
+    fuzz_config: {
+        cc: ["marissaw@google.com"],
+    },
+
+    srcs: [
+        "gralloctypes.cpp",
+        "main.cpp",
+        "util.cpp",
+    ],
+    static_libs: [
+        "libbase",
+        "libcgrouprc",
+        "libcgrouprc_format",
+        "libcutils",
+        "libgralloctypes",
+        "libhidlbase",
+        "liblog",
+        "libprocessgroup",
+        "libjsoncpp",
+        "libutils",
+    ],
+
+    // This flag enables verbose output in the fuzz target, and is very useful
+    // for debugging a failure. If you are trying to diagnose how a crash was
+    // produced, you may find uncommenting the below line very useful.
+    // cflags: ["-DENABLE_LOG_FUZZ"],
+}
diff --git a/libs/gralloc/types/fuzzer/gralloctypes.cpp b/libs/gralloc/types/fuzzer/gralloctypes.cpp
new file mode 100644
index 0000000..23c90b8
--- /dev/null
+++ b/libs/gralloc/types/fuzzer/gralloctypes.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2019 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 FUZZ_LOG_TAG "gralloctypes"
+
+#include <cstdint>
+
+#include <aidl/android/hardware/graphics/common/BlendMode.h>
+#include <aidl/android/hardware/graphics/common/Dataspace.h>
+#include <aidl/android/hardware/graphics/common/ExtendableType.h>
+#include <aidl/android/hardware/graphics/common/PlaneLayout.h>
+#include <android/hardware/graphics/common/1.2/types.h>
+#include <gralloctypes/Gralloc4.h>
+#include <hidl/HidlSupport.h>
+#include <utils/Errors.h>
+
+#include "gralloctypes.h"
+#include "util.h"
+
+using ::android::status_t;
+
+#define GRALLOCTYPES_DECODE(T, FUNC) \
+    [] (const ::android::hardware::hidl_vec<uint8_t>& vec, uint8_t /*data*/) {\
+        FUZZ_LOG() << "about to read " #T " using " #FUNC;\
+        T t;\
+        status_t err = FUNC(vec, &t);\
+        (void) err;\
+        FUZZ_LOG() << #T " done " /* << "err: " << err*/;\
+    }
+
+
+// clang-format off
+std::vector<GrallocTypesDecode> GRALLOCTYPES_DECODE_FUNCTIONS {
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeBufferId),
+    GRALLOCTYPES_DECODE(std::string, ::android::gralloc4::decodeName),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeWidth),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeHeight),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeLayerCount),
+    GRALLOCTYPES_DECODE(::android::hardware::graphics::common::V1_2::PixelFormat, ::android::gralloc4::decodePixelFormatRequested),
+    GRALLOCTYPES_DECODE(uint32_t, ::android::gralloc4::decodePixelFormatFourCC),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodePixelFormatModifier),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeUsage),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeAllocationSize),
+    GRALLOCTYPES_DECODE(uint64_t, ::android::gralloc4::decodeProtectedContent),
+    GRALLOCTYPES_DECODE(aidl::android::hardware::graphics::common::ExtendableType, ::android::gralloc4::decodeCompression),
+    GRALLOCTYPES_DECODE(aidl::android::hardware::graphics::common::ExtendableType, ::android::gralloc4::decodeInterlaced),
+    GRALLOCTYPES_DECODE(aidl::android::hardware::graphics::common::ExtendableType, ::android::gralloc4::decodeChromaSiting),
+    GRALLOCTYPES_DECODE(std::vector<aidl::android::hardware::graphics::common::PlaneLayout>, ::android::gralloc4::decodePlaneLayouts),
+    GRALLOCTYPES_DECODE(aidl::android::hardware::graphics::common::Dataspace, ::android::gralloc4::decodeDataspace),
+    GRALLOCTYPES_DECODE(aidl::android::hardware::graphics::common::BlendMode, ::android::gralloc4::decodeBlendMode),
+};
+// clang-format on
diff --git a/libs/gralloc/types/fuzzer/gralloctypes.h b/libs/gralloc/types/fuzzer/gralloctypes.h
new file mode 100644
index 0000000..b995fce
--- /dev/null
+++ b/libs/gralloc/types/fuzzer/gralloctypes.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <gralloctypes/Gralloc4.h>
+#include <hidl/HidlSupport.h>
+
+#include <vector>
+
+using GrallocTypesDecode = std::function<void(const ::android::hardware::hidl_vec<uint8_t>& vec, uint8_t data)>;
+
+extern std::vector<GrallocTypesDecode> GRALLOCTYPES_DECODE_FUNCTIONS;
diff --git a/libs/gralloc/types/fuzzer/main.cpp b/libs/gralloc/types/fuzzer/main.cpp
new file mode 100644
index 0000000..2807878
--- /dev/null
+++ b/libs/gralloc/types/fuzzer/main.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2019 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 FUZZ_LOG_TAG "main"
+
+#include "gralloctypes.h"
+#include "util.h"
+
+#include <android-base/logging.h>
+#include <log/log.h>
+
+#include <cstdlib>
+#include <ctime>
+
+void doFuzz(
+        const std::vector<GrallocTypesDecode>& decodes,
+        const std::vector<uint8_t>& input,
+        const std::vector<uint8_t>& instructions) {
+
+    ::android::hardware::hidl_vec<uint8_t> vec;
+    vec.setToExternal(const_cast<uint8_t*>(input.data()), input.size(), false /*shouldOwn*/);
+
+    // since we are only using a byte to index
+    CHECK(decodes.size() <= 255) << decodes.size();
+
+    for (size_t i = 0; i < instructions.size() - 1; i += 2) {
+        uint8_t a = instructions[i];
+        uint8_t decodeIdx = a % decodes.size();
+
+        uint8_t b = instructions[i + 1];
+
+        FUZZ_LOG() << "Instruction: " << (i / 2) + 1 << "/" << instructions.size() / 2
+                   << " cmd: " << static_cast<size_t>(a) << " (" << static_cast<size_t>(decodeIdx)
+                   << ") arg: " << static_cast<size_t>(b) << " size: " << vec.size();
+
+        decodes[decodeIdx](vec, b);
+    }
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    if (size <= 1) return 0;  // no use
+
+    // data to fill out parcel
+    size_t inputLen = size / 2;
+    std::vector<uint8_t> input(data, data + inputLen);
+    data += inputLen;
+    size -= inputLen;
+
+    // data to use to determine what to do
+    size_t instructionLen = size;
+    std::vector<uint8_t> instructions(data, data + instructionLen);
+    data += instructionLen;
+    size -= instructionLen;
+
+    CHECK(size == 0) << "size: " << size;
+
+    FUZZ_LOG() << "inputLen: " << inputLen << " instructionLen: " << instructionLen;
+    FUZZ_LOG() << "input: " << hexString(input);
+    FUZZ_LOG() << "instructions: " << hexString(instructions);
+
+    doFuzz(GRALLOCTYPES_DECODE_FUNCTIONS, input, instructions);
+    return 0;
+}
diff --git a/libs/gralloc/types/fuzzer/util.cpp b/libs/gralloc/types/fuzzer/util.cpp
new file mode 100644
index 0000000..479f406
--- /dev/null
+++ b/libs/gralloc/types/fuzzer/util.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 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 FUZZ_LOG_TAG "util"
+#include "util.h"
+
+#include <android-base/logging.h>
+
+#include <iomanip>
+#include <sstream>
+
+std::string hexString(const void* bytes, size_t len) {
+    if (bytes == nullptr) return "<null>";
+
+    const uint8_t* bytes8 = static_cast<const uint8_t*>(bytes);
+    char chars[] = "0123456789abcdef";
+    std::string result;
+    result.resize(len * 2);
+
+    for (size_t i = 0; i < len; i++) {
+        result[2 * i] = chars[bytes8[i] >> 4];
+        result[2 * i + 1] = chars[bytes8[i] & 0xf];
+    }
+
+    return result;
+}
+std::string hexString(const std::vector<uint8_t>& bytes) {
+    return hexString(bytes.data(), bytes.size());
+}
diff --git a/libs/gralloc/types/fuzzer/util.h b/libs/gralloc/types/fuzzer/util.h
new file mode 100644
index 0000000..aa504d2
--- /dev/null
+++ b/libs/gralloc/types/fuzzer/util.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2019 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 <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#ifndef FUZZ_LOG_TAG
+#error "Must define FUZZ_LOG_TAG"
+#endif
+
+#define FUZZ_LOG() FuzzLog(FUZZ_LOG_TAG).log()
+
+#ifdef ENABLE_LOG_FUZZ
+class FuzzLog {
+public:
+    FuzzLog(const char* tag) : mTag(tag) {}
+    ~FuzzLog() { std::cout << mTag << ": " << mOs.str() << std::endl; }
+
+    std::stringstream& log() { return mOs; }
+
+private:
+    const char* mTag = nullptr;
+    std::stringstream mOs;
+};
+#else
+class FuzzLog {
+public:
+    FuzzLog(const char* /*tag*/) {}
+    template <typename T>
+    FuzzLog& operator<<(const T& /*t*/) {
+        return *this;
+    }
+    FuzzLog& log() { return *this; }
+};
+#endif
+
+std::string hexString(const void* bytes, size_t len);
+std::string hexString(const std::vector<uint8_t>& bytes);
diff --git a/libs/gralloc/types/include/gralloctypes/Gralloc4.h b/libs/gralloc/types/include/gralloctypes/Gralloc4.h
new file mode 100644
index 0000000..80588cd
--- /dev/null
+++ b/libs/gralloc/types/include/gralloctypes/Gralloc4.h
@@ -0,0 +1,270 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/graphics/common/BlendMode.h>
+#include <aidl/android/hardware/graphics/common/Dataspace.h>
+#include <aidl/android/hardware/graphics/common/ExtendableType.h>
+#include <aidl/android/hardware/graphics/common/Interlaced.h>
+#include <aidl/android/hardware/graphics/common/PlaneLayout.h>
+#include <aidl/android/hardware/graphics/common/ChromaSiting.h>
+#include <aidl/android/hardware/graphics/common/Compression.h>
+#include <aidl/android/hardware/graphics/common/Interlaced.h>
+#include <aidl/android/hardware/graphics/common/StandardMetadataType.h>
+#include <aidl/android/hardware/graphics/common/PlaneLayoutComponentType.h>
+
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+
+namespace android {
+
+namespace gralloc4 {
+
+#define GRALLOC4_STANDARD_METADATA_TYPE "android.hardware.graphics.common.StandardMetadataType"
+#define GRALLOC4_CHROMA_SITING "android.hardware.graphics.common.ChromaSiting"
+#define GRALLOC4_COMPRESSION "android.hardware.graphics.common.Compression"
+#define GRALLOC4_INTERLACED "android.hardware.graphics.common.Interlaced"
+#define GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE "android.hardware.graphics.common.PlaneLayoutComponentType"
+
+/*---------------------------------------------------------------------------------------------*/
+/**
+ * Definitions of the standard buffer metadata types. It is recommended that everyone uses
+ * these definitions directly for standard buffer metadata types.
+ */
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_BufferId = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::BUFFER_ID)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Name = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::NAME)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Width = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::WIDTH)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Height = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::HEIGHT)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_LayerCount = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::LAYER_COUNT)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_PixelFormatRequested = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::PIXEL_FORMAT_REQUESTED)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_PixelFormatFourCC = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::PIXEL_FORMAT_FOURCC)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_PixelFormatModifier = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::PIXEL_FORMAT_MODIFIER)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Usage = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::USAGE)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_AllocationSize = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::ALLOCATION_SIZE)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_ProtectedContent = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::PROTECTED_CONTENT)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Compression = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::COMPRESSION)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Interlaced = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::INTERLACED)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_ChromaSiting = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::CHROMA_SITING)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_PlaneLayouts = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::PLANE_LAYOUTS)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_Dataspace = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::DATASPACE)
+};
+
+static const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType MetadataType_BlendMode = {
+        GRALLOC4_STANDARD_METADATA_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::StandardMetadataType::BLEND_MODE)
+};
+
+/*---------------------------------------------------------------------------------------------*/
+
+/**
+ * Definitions of the standard compression strategies. It is recommended that everyone uses
+ * these definitions directly for standard compression strategies.
+ */
+static const aidl::android::hardware::graphics::common::ExtendableType Compression_None = {
+        GRALLOC4_COMPRESSION, static_cast<int64_t>(aidl::android::hardware::graphics::common::Compression::NONE)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType Compression_DisplayStreamCompression = {
+        GRALLOC4_COMPRESSION, static_cast<int64_t>(aidl::android::hardware::graphics::common::Compression::DISPLAY_STREAM_COMPRESSION)
+};
+
+/*---------------------------------------------------------------------------------------------*/
+
+/**
+ * Definitions of the standard interlaced strategies. It is recommended that everyone uses
+ * these definitions directly for standard interlaced strategies.
+ */
+static const aidl::android::hardware::graphics::common::ExtendableType Interlaced_None = {
+        GRALLOC4_INTERLACED, static_cast<int64_t>(aidl::android::hardware::graphics::common::Interlaced::NONE)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType Interlaced_TopBottom = {
+        GRALLOC4_INTERLACED, static_cast<int64_t>(aidl::android::hardware::graphics::common::Interlaced::TOP_BOTTOM)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType Interlaced_RightLeft = {
+        GRALLOC4_INTERLACED, static_cast<int64_t>(aidl::android::hardware::graphics::common::Interlaced::RIGHT_LEFT)
+};
+
+/*---------------------------------------------------------------------------------------------*/
+
+/**
+ * Definitions of the standard chroma siting. It is recommended that everyone uses
+ * these definitions directly for standard chroma siting.
+ */
+static const aidl::android::hardware::graphics::common::ExtendableType ChromaSiting_None = {
+        GRALLOC4_CHROMA_SITING, static_cast<int64_t>(aidl::android::hardware::graphics::common::ChromaSiting::NONE)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType ChromaSiting_Unknown = {
+        GRALLOC4_CHROMA_SITING, static_cast<int64_t>(aidl::android::hardware::graphics::common::ChromaSiting::UNKNOWN)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType ChromaSiting_SitedInterstitial = {
+        GRALLOC4_CHROMA_SITING, static_cast<int64_t>(aidl::android::hardware::graphics::common::ChromaSiting::SITED_INTERSTITIAL)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType ChromaSiting_CositedHorizontal = {
+        GRALLOC4_CHROMA_SITING, static_cast<int64_t>(aidl::android::hardware::graphics::common::ChromaSiting::COSITED_HORIZONTAL)
+};
+
+/*---------------------------------------------------------------------------------------------*/
+
+/**
+ * Definitions of the standard plane layout component types. It is recommended that everyone uses
+ * these definitions directly for standard plane layout component types
+ */
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_Y = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::Y)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_CB = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::CB)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_CR = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::CR)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_R = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::R)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_G = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::G)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_B = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::B)
+};
+
+static const aidl::android::hardware::graphics::common::ExtendableType PlaneLayoutComponentType_A = {
+        GRALLOC4_PLANE_LAYOUT_COMPONENT_TYPE, static_cast<int64_t>(aidl::android::hardware::graphics::common::PlaneLayoutComponentType::A)
+};
+
+/*---------------------------------------------------------------------------------------------*/
+
+/**
+ * The functions below can be used to parse a StandardMetadataType.
+ */
+bool isStandardMetadataType(const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType& metadataType);
+
+aidl::android::hardware::graphics::common::StandardMetadataType getStandardMetadataTypeValue(const android::hardware::graphics::mapper::V4_0::IMapper::MetadataType& metadataType);
+
+/**
+ * The functions below encode and decode standard metadata into a byte stream. It is STRONGLY
+ * recommended that both the vendor and system partitions use these functions when getting
+ * and setting metadata through gralloc 4 (IMapper 4.0).
+ */
+status_t encodeBufferId(uint64_t bufferId, android::hardware::hidl_vec<uint8_t>* outBufferId);
+status_t decodeBufferId(const android::hardware::hidl_vec<uint8_t>& bufferId, uint64_t* outBufferId);
+
+status_t encodeName(const std::string& name, android::hardware::hidl_vec<uint8_t>* outName);
+status_t decodeName(const android::hardware::hidl_vec<uint8_t>& name, std::string* outName);
+
+status_t encodeWidth(uint64_t width, android::hardware::hidl_vec<uint8_t>* outWidth);
+status_t decodeWidth(const android::hardware::hidl_vec<uint8_t>& width, uint64_t* outWidth);
+
+status_t encodeHeight(uint64_t height, android::hardware::hidl_vec<uint8_t>* outHeight);
+status_t decodeHeight(const android::hardware::hidl_vec<uint8_t>& height, uint64_t* outHeight);
+
+status_t encodeLayerCount(uint64_t layerCount, android::hardware::hidl_vec<uint8_t>* outLayerCount);
+status_t decodeLayerCount(const android::hardware::hidl_vec<uint8_t>& layerCount, uint64_t* outLayerCount);
+
+status_t encodePixelFormatRequested(const hardware::graphics::common::V1_2::PixelFormat& pixelFormatRequested, android::hardware::hidl_vec<uint8_t>* outPixelFormatRequested);
+status_t decodePixelFormatRequested(const android::hardware::hidl_vec<uint8_t>& pixelFormatRequested, hardware::graphics::common::V1_2::PixelFormat* outPixelFormatRequested);
+
+status_t encodePixelFormatFourCC(uint32_t pixelFormatFourCC, android::hardware::hidl_vec<uint8_t>* outPixelFormatFourCC);
+status_t decodePixelFormatFourCC(const android::hardware::hidl_vec<uint8_t>& pixelFormatFourCC, uint32_t* outPixelFormatFourCC);
+
+status_t encodePixelFormatModifier(uint64_t pixelFormatModifier, android::hardware::hidl_vec<uint8_t>* outPixelFormatModifier);
+status_t decodePixelFormatModifier(const android::hardware::hidl_vec<uint8_t>& pixelFormatModifier, uint64_t* outPixelFormatModifier);
+
+status_t encodeUsage(uint64_t usage, android::hardware::hidl_vec<uint8_t>* outUsage);
+status_t decodeUsage(const android::hardware::hidl_vec<uint8_t>& usage, uint64_t* outUsage);
+
+status_t encodeAllocationSize(uint64_t allocationSize, android::hardware::hidl_vec<uint8_t>* outAllocationSize);
+status_t decodeAllocationSize(const android::hardware::hidl_vec<uint8_t>& allocationSize, uint64_t* outAllocationSize);
+
+status_t encodeProtectedContent(uint64_t protectedContent, android::hardware::hidl_vec<uint8_t>* outProtectedContent);
+status_t decodeProtectedContent(const android::hardware::hidl_vec<uint8_t>& protectedContent, uint64_t* outProtectedContent);
+
+status_t encodeCompression(const aidl::android::hardware::graphics::common::ExtendableType& compression, android::hardware::hidl_vec<uint8_t>* outCompression);
+status_t decodeCompression(const android::hardware::hidl_vec<uint8_t>& compression, aidl::android::hardware::graphics::common::ExtendableType* outCompression);
+
+status_t encodeInterlaced(const aidl::android::hardware::graphics::common::ExtendableType& interlaced, android::hardware::hidl_vec<uint8_t>* outInterlaced);
+status_t decodeInterlaced(const android::hardware::hidl_vec<uint8_t>& interlaced, aidl::android::hardware::graphics::common::ExtendableType* outInterlaced);
+
+status_t encodeChromaSiting(const aidl::android::hardware::graphics::common::ExtendableType& chromaSiting, android::hardware::hidl_vec<uint8_t>* outChromaSiting);
+status_t decodeChromaSiting(const android::hardware::hidl_vec<uint8_t>& chromaSiting, aidl::android::hardware::graphics::common::ExtendableType* outChromaSiting);
+
+status_t encodePlaneLayouts(const std::vector<aidl::android::hardware::graphics::common::PlaneLayout>& planeLayouts, android::hardware::hidl_vec<uint8_t>* outPlaneLayouts);
+status_t decodePlaneLayouts(const android::hardware::hidl_vec<uint8_t>& planeLayouts, std::vector<aidl::android::hardware::graphics::common::PlaneLayout>* outPlaneLayouts);
+
+status_t encodeDataspace(const aidl::android::hardware::graphics::common::Dataspace& dataspace, android::hardware::hidl_vec<uint8_t>* outDataspace);
+status_t decodeDataspace(const android::hardware::hidl_vec<uint8_t>& dataspace, aidl::android::hardware::graphics::common::Dataspace* outDataspace);
+
+status_t encodeBlendMode(const aidl::android::hardware::graphics::common::BlendMode& blendMode, android::hardware::hidl_vec<uint8_t>* outBlendMode);
+status_t decodeBlendMode(const android::hardware::hidl_vec<uint8_t>& blendMode, aidl::android::hardware::graphics::common::BlendMode* outBlendMode);
+
+} // namespace gralloc4
+
+} // namespace android
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 4f605e0..1ae148c 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -50,6 +50,7 @@
         "ConsumerBase.cpp",
         "CpuConsumer.cpp",
         "DebugEGLImageTracker.cpp",
+        "DisplayEventDispatcher.cpp",
         "DisplayEventReceiver.cpp",
         "GLConsumer.cpp",
         "GuiConfig.cpp",
diff --git a/libs/gui/BLASTBufferQueue.cpp b/libs/gui/BLASTBufferQueue.cpp
index 3c31d74..29ea84e 100644
--- a/libs/gui/BLASTBufferQueue.cpp
+++ b/libs/gui/BLASTBufferQueue.cpp
@@ -14,8 +14,12 @@
  * limitations under the License.
  */
 
+#undef LOG_TAG
+#define LOG_TAG "BLASTBufferQueue"
+
 #include <gui/BLASTBufferQueue.h>
 #include <gui/BufferItemConsumer.h>
+#include <gui/GLConsumer.h>
 
 #include <chrono>
 
@@ -24,8 +28,14 @@
 namespace android {
 
 BLASTBufferQueue::BLASTBufferQueue(const sp<SurfaceControl>& surface, int width, int height)
-      : mSurfaceControl(surface), mWidth(width), mHeight(height) {
+      : mSurfaceControl(surface),
+        mPendingCallbacks(0),
+        mWidth(width),
+        mHeight(height),
+        mNextTransaction(nullptr) {
     BufferQueue::createBufferQueue(&mProducer, &mConsumer);
+    mConsumer->setMaxBufferCount(MAX_BUFFERS);
+    mProducer->setMaxDequeuedBufferCount(MAX_BUFFERS - 1);
     mBufferItemConsumer =
             new BufferItemConsumer(mConsumer, AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER, 1, true);
     mBufferItemConsumer->setName(String8("BLAST Consumer"));
@@ -34,6 +44,8 @@
     mBufferItemConsumer->setDefaultBufferSize(mWidth, mHeight);
     mBufferItemConsumer->setDefaultBufferFormat(PIXEL_FORMAT_RGBA_8888);
     mBufferItemConsumer->setTransformHint(mSurfaceControl->getTransformHint());
+
+    mAcquired = false;
 }
 
 void BLASTBufferQueue::update(const sp<SurfaceControl>& surface, int width, int height) {
@@ -59,20 +71,32 @@
                                            const std::vector<SurfaceControlStats>& stats) {
     std::unique_lock _lock{mMutex};
 
-    if (stats.size() > 0 && mNextCallbackBufferItem.mGraphicBuffer != nullptr) {
+    if (stats.size() > 0 && !mShadowQueue.empty()) {
         mBufferItemConsumer->releaseBuffer(mNextCallbackBufferItem,
                                            stats[0].previousReleaseFence
                                                    ? stats[0].previousReleaseFence
                                                    : Fence::NO_FENCE);
+        mAcquired = false;
         mNextCallbackBufferItem = BufferItem();
         mBufferItemConsumer->setTransformHint(stats[0].transformHint);
     }
-    mDequeueWaitCV.notify_all();
+    mPendingCallbacks--;
+    processNextBufferLocked();
+    mCallbackCV.notify_all();
     decStrong((void*)transactionCallbackThunk);
 }
 
-void BLASTBufferQueue::onFrameAvailable(const BufferItem& item) {
-    std::unique_lock _lock{mMutex};
+void BLASTBufferQueue::processNextBufferLocked() {
+    if (mShadowQueue.empty()) {
+        return;
+    }
+
+    if (mAcquired) {
+        return;
+    }
+
+    BufferItem item = std::move(mShadowQueue.front());
+    mShadowQueue.pop();
 
     SurfaceComposerClient::Transaction localTransaction;
     bool applyTransaction = true;
@@ -83,11 +107,11 @@
         applyTransaction = false;
     }
 
-    int status = OK;
     mNextCallbackBufferItem = mLastSubmittedBufferItem;
-
     mLastSubmittedBufferItem = BufferItem();
-    status = mBufferItemConsumer->acquireBuffer(&mLastSubmittedBufferItem, -1, false);
+
+    status_t status = mBufferItemConsumer->acquireBuffer(&mLastSubmittedBufferItem, -1, false);
+    mAcquired = true;
     if (status != OK) {
         ALOGE("Failed to acquire?");
     }
@@ -99,7 +123,6 @@
         return;
     }
 
-
     // Ensure BLASTBufferQueue stays alive until we receive the transaction complete callback.
     incStrong((void*)transactionCallbackThunk);
 
@@ -109,20 +132,31 @@
     t->addTransactionCompletedCallback(transactionCallbackThunk, static_cast<void*>(this));
 
     t->setFrame(mSurfaceControl, {0, 0, (int32_t)buffer->getWidth(), (int32_t)buffer->getHeight()});
-    t->setCrop(mSurfaceControl, {0, 0, (int32_t)buffer->getWidth(), (int32_t)buffer->getHeight()});
+    t->setCrop(mSurfaceControl, computeCrop(mLastSubmittedBufferItem));
 
     if (applyTransaction) {
-        ALOGE("Apply transaction");
         t->apply();
-
-        if (mNextCallbackBufferItem.mGraphicBuffer != nullptr) {
-            mDequeueWaitCV.wait_for(_lock, 5000ms);
-        }
     }
 }
 
+Rect BLASTBufferQueue::computeCrop(const BufferItem& item) {
+    if (item.mScalingMode == NATIVE_WINDOW_SCALING_MODE_SCALE_CROP) {
+        return GLConsumer::scaleDownCrop(item.mCrop, mWidth, mHeight);
+    }
+    return item.mCrop;
+}
+
+void BLASTBufferQueue::onFrameAvailable(const BufferItem& item) {
+    std::lock_guard _lock{mMutex};
+
+    // add to shadow queue
+    mShadowQueue.push(item);
+    processNextBufferLocked();
+    mPendingCallbacks++;
+}
+
 void BLASTBufferQueue::setNextTransaction(SurfaceComposerClient::Transaction* t) {
-    std::unique_lock _lock{mMutex};
+    std::lock_guard _lock{mMutex};
     mNextTransaction = t;
 }
 
diff --git a/libs/gui/DisplayEventDispatcher.cpp b/libs/gui/DisplayEventDispatcher.cpp
new file mode 100644
index 0000000..54f383e
--- /dev/null
+++ b/libs/gui/DisplayEventDispatcher.cpp
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2015 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 "DisplayEventDispatcher"
+
+#include <cinttypes>
+#include <cstdint>
+
+#include <gui/DisplayEventDispatcher.h>
+#include <gui/DisplayEventReceiver.h>
+#include <utils/Log.h>
+#include <utils/Looper.h>
+
+#include <utils/Timers.h>
+
+namespace android {
+
+// Number of events to read at a time from the DisplayEventDispatcher pipe.
+// The value should be large enough that we can quickly drain the pipe
+// using just a few large reads.
+static const size_t EVENT_BUFFER_SIZE = 100;
+
+DisplayEventDispatcher::DisplayEventDispatcher(const sp<Looper>& looper,
+                                               ISurfaceComposer::VsyncSource vsyncSource,
+                                               ISurfaceComposer::ConfigChanged configChanged)
+      : mLooper(looper), mReceiver(vsyncSource, configChanged), mWaitingForVsync(false) {
+    ALOGV("dispatcher %p ~ Initializing display event dispatcher.", this);
+}
+
+status_t DisplayEventDispatcher::initialize() {
+    status_t result = mReceiver.initCheck();
+    if (result) {
+        ALOGW("Failed to initialize display event receiver, status=%d", result);
+        return result;
+    }
+
+    int rc = mLooper->addFd(mReceiver.getFd(), 0, Looper::EVENT_INPUT, this, NULL);
+    if (rc < 0) {
+        return UNKNOWN_ERROR;
+    }
+    return OK;
+}
+
+void DisplayEventDispatcher::dispose() {
+    ALOGV("dispatcher %p ~ Disposing display event dispatcher.", this);
+
+    if (!mReceiver.initCheck()) {
+        mLooper->removeFd(mReceiver.getFd());
+    }
+}
+
+status_t DisplayEventDispatcher::scheduleVsync() {
+    if (!mWaitingForVsync) {
+        ALOGV("dispatcher %p ~ Scheduling vsync.", this);
+
+        // Drain all pending events.
+        nsecs_t vsyncTimestamp;
+        PhysicalDisplayId vsyncDisplayId;
+        uint32_t vsyncCount;
+        if (processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount)) {
+            ALOGE("dispatcher %p ~ last event processed while scheduling was for %" PRId64 "", this,
+                  ns2ms(static_cast<nsecs_t>(vsyncTimestamp)));
+        }
+
+        status_t status = mReceiver.requestNextVsync();
+        if (status) {
+            ALOGW("Failed to request next vsync, status=%d", status);
+            return status;
+        }
+
+        mWaitingForVsync = true;
+    }
+    return OK;
+}
+
+int DisplayEventDispatcher::handleEvent(int, int events, void*) {
+    if (events & (Looper::EVENT_ERROR | Looper::EVENT_HANGUP)) {
+        ALOGE("Display event receiver pipe was closed or an error occurred.  "
+              "events=0x%x",
+              events);
+        return 0; // remove the callback
+    }
+
+    if (!(events & Looper::EVENT_INPUT)) {
+        ALOGW("Received spurious callback for unhandled poll event.  "
+              "events=0x%x",
+              events);
+        return 1; // keep the callback
+    }
+
+    // Drain all pending events, keep the last vsync.
+    nsecs_t vsyncTimestamp;
+    PhysicalDisplayId vsyncDisplayId;
+    uint32_t vsyncCount;
+    if (processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount)) {
+        ALOGV("dispatcher %p ~ Vsync pulse: timestamp=%" PRId64
+              ", displayId=%" ANDROID_PHYSICAL_DISPLAY_ID_FORMAT ", count=%d",
+              this, ns2ms(vsyncTimestamp), vsyncDisplayId, vsyncCount);
+        mWaitingForVsync = false;
+        dispatchVsync(vsyncTimestamp, vsyncDisplayId, vsyncCount);
+    }
+
+    return 1; // keep the callback
+}
+
+bool DisplayEventDispatcher::processPendingEvents(nsecs_t* outTimestamp,
+                                                  PhysicalDisplayId* outDisplayId,
+                                                  uint32_t* outCount) {
+    bool gotVsync = false;
+    DisplayEventReceiver::Event buf[EVENT_BUFFER_SIZE];
+    ssize_t n;
+    while ((n = mReceiver.getEvents(buf, EVENT_BUFFER_SIZE)) > 0) {
+        ALOGV("dispatcher %p ~ Read %d events.", this, int(n));
+        for (ssize_t i = 0; i < n; i++) {
+            const DisplayEventReceiver::Event& ev = buf[i];
+            switch (ev.header.type) {
+                case DisplayEventReceiver::DISPLAY_EVENT_VSYNC:
+                    // Later vsync events will just overwrite the info from earlier
+                    // ones. That's fine, we only care about the most recent.
+                    gotVsync = true;
+                    *outTimestamp = ev.header.timestamp;
+                    *outDisplayId = ev.header.displayId;
+                    *outCount = ev.vsync.count;
+                    break;
+                case DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG:
+                    dispatchHotplug(ev.header.timestamp, ev.header.displayId, ev.hotplug.connected);
+                    break;
+                case DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED:
+                    dispatchConfigChanged(ev.header.timestamp, ev.header.displayId,
+                                          ev.config.configId);
+                    break;
+                default:
+                    ALOGW("dispatcher %p ~ ignoring unknown event type %#x", this, ev.header.type);
+                    break;
+            }
+        }
+    }
+    if (n < 0) {
+        ALOGW("Failed to get events from display event dispatcher, status=%d", status_t(n));
+    }
+    return gotVsync;
+}
+} // namespace android
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index 5805797..546757b 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -905,6 +905,85 @@
         return reply.readInt32();
     }
 
+    virtual status_t setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                  int32_t defaultModeId, float minRefreshRate,
+                                                  float maxRefreshRate) {
+        Parcel data, reply;
+        status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (result != NO_ERROR) {
+            ALOGE("setDesiredDisplayConfigSpecs: failed to writeInterfaceToken: %d", result);
+            return result;
+        }
+        result = data.writeStrongBinder(displayToken);
+        if (result != NO_ERROR) {
+            ALOGE("setDesiredDisplayConfigSpecs: failed to write display token: %d", result);
+            return result;
+        }
+        result = data.writeInt32(defaultModeId);
+        if (result != NO_ERROR) {
+            ALOGE("setDesiredDisplayConfigSpecs failed to write defaultModeId: %d", result);
+            return result;
+        }
+        result = data.writeFloat(minRefreshRate);
+        if (result != NO_ERROR) {
+            ALOGE("setDesiredDisplayConfigSpecs failed to write minRefreshRate: %d", result);
+            return result;
+        }
+        result = data.writeFloat(maxRefreshRate);
+        if (result != NO_ERROR) {
+            ALOGE("setDesiredDisplayConfigSpecs failed to write maxRefreshRate: %d", result);
+            return result;
+        }
+
+        result = remote()->transact(BnSurfaceComposer::SET_DESIRED_DISPLAY_CONFIG_SPECS, data,
+                                    &reply);
+        if (result != NO_ERROR) {
+            ALOGE("setDesiredDisplayConfigSpecs failed to transact: %d", result);
+            return result;
+        }
+        return reply.readInt32();
+    }
+
+    virtual status_t getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                  int32_t* outDefaultModeId,
+                                                  float* outMinRefreshRate,
+                                                  float* outMaxRefreshRate) {
+        if (!outDefaultModeId || !outMinRefreshRate || !outMaxRefreshRate) return BAD_VALUE;
+        Parcel data, reply;
+        status_t result = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (result != NO_ERROR) {
+            ALOGE("getDesiredDisplayConfigSpecs failed to writeInterfaceToken: %d", result);
+            return result;
+        }
+        result = data.writeStrongBinder(displayToken);
+        if (result != NO_ERROR) {
+            ALOGE("getDesiredDisplayConfigSpecs failed to writeStrongBinder: %d", result);
+            return result;
+        }
+        result = remote()->transact(BnSurfaceComposer::GET_DESIRED_DISPLAY_CONFIG_SPECS, data,
+                                    &reply);
+        if (result != NO_ERROR) {
+            ALOGE("getDesiredDisplayConfigSpecs failed to transact: %d", result);
+            return result;
+        }
+        result = reply.readInt32(outDefaultModeId);
+        if (result != NO_ERROR) {
+            ALOGE("getDesiredDisplayConfigSpecs failed to read defaultModeId: %d", result);
+            return result;
+        }
+        result = reply.readFloat(outMinRefreshRate);
+        if (result != NO_ERROR) {
+            ALOGE("getDesiredDisplayConfigSpecs failed to read minRefreshRate: %d", result);
+            return result;
+        }
+        result = reply.readFloat(outMaxRefreshRate);
+        if (result != NO_ERROR) {
+            ALOGE("getDesiredDisplayConfigSpecs failed to read maxRefreshRate: %d", result);
+            return result;
+        }
+        return reply.readInt32();
+    }
+
     virtual status_t getDisplayBrightnessSupport(const sp<IBinder>& displayToken,
                                                  bool* outSupport) const {
         Parcel data, reply;
@@ -978,6 +1057,35 @@
         }
         return NO_ERROR;
     }
+
+    virtual status_t setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
+                                             float lightPosY, float lightPosZ, float lightRadius) {
+        Parcel data, reply;
+        status_t error = data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        if (error != NO_ERROR) {
+            ALOGE("setGlobalShadowSettings: failed to write interface token: %d", error);
+            return error;
+        }
+
+        std::vector<float> shadowConfig = {ambientColor.r, ambientColor.g, ambientColor.b,
+                                           ambientColor.a, spotColor.r,    spotColor.g,
+                                           spotColor.b,    spotColor.a,    lightPosY,
+                                           lightPosZ,      lightRadius};
+
+        error = data.writeFloatVector(shadowConfig);
+        if (error != NO_ERROR) {
+            ALOGE("setGlobalShadowSettings: failed to write shadowConfig: %d", error);
+            return error;
+        }
+
+        error = remote()->transact(BnSurfaceComposer::SET_GLOBAL_SHADOW_SETTINGS, data, &reply,
+                                   IBinder::FLAG_ONEWAY);
+        if (error != NO_ERROR) {
+            ALOGE("setGlobalShadowSettings: failed to transact: %d", error);
+            return error;
+        }
+        return NO_ERROR;
+    }
 };
 
 // Out-of-line virtual method definition to trigger vtable emission in this
@@ -1554,6 +1662,72 @@
             reply->writeInt32(result);
             return result;
         }
+        case SET_DESIRED_DISPLAY_CONFIG_SPECS: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<IBinder> displayToken = data.readStrongBinder();
+            int32_t defaultModeId;
+            status_t result = data.readInt32(&defaultModeId);
+            if (result != NO_ERROR) {
+                ALOGE("setDesiredDisplayConfigSpecs: failed to read defaultModeId: %d", result);
+                return result;
+            }
+            float minRefreshRate;
+            result = data.readFloat(&minRefreshRate);
+            if (result != NO_ERROR) {
+                ALOGE("setDesiredDisplayConfigSpecs: failed to read minRefreshRate: %d", result);
+                return result;
+            }
+            float maxRefreshRate;
+            result = data.readFloat(&maxRefreshRate);
+            if (result != NO_ERROR) {
+                ALOGE("setDesiredDisplayConfigSpecs: failed to read maxRefreshRate: %d", result);
+                return result;
+            }
+            result = setDesiredDisplayConfigSpecs(displayToken, defaultModeId, minRefreshRate,
+                                                  maxRefreshRate);
+            if (result != NO_ERROR) {
+                ALOGE("setDesiredDisplayConfigSpecs: failed to call setDesiredDisplayConfigSpecs: "
+                      "%d",
+                      result);
+                return result;
+            }
+            reply->writeInt32(result);
+            return result;
+        }
+        case GET_DESIRED_DISPLAY_CONFIG_SPECS: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<IBinder> displayToken = data.readStrongBinder();
+            int32_t defaultModeId;
+            float minRefreshRate;
+            float maxRefreshRate;
+
+            status_t result = getDesiredDisplayConfigSpecs(displayToken, &defaultModeId,
+                                                           &minRefreshRate, &maxRefreshRate);
+            if (result != NO_ERROR) {
+                ALOGE("getDesiredDisplayConfigSpecs: failed to get getDesiredDisplayConfigSpecs: "
+                      "%d",
+                      result);
+                return result;
+            }
+
+            result = reply->writeInt32(defaultModeId);
+            if (result != NO_ERROR) {
+                ALOGE("getDesiredDisplayConfigSpecs: failed to write defaultModeId: %d", result);
+                return result;
+            }
+            result = reply->writeFloat(minRefreshRate);
+            if (result != NO_ERROR) {
+                ALOGE("getDesiredDisplayConfigSpecs: failed to write minRefreshRate: %d", result);
+                return result;
+            }
+            result = reply->writeFloat(maxRefreshRate);
+            if (result != NO_ERROR) {
+                ALOGE("getDesiredDisplayConfigSpecs: failed to write maxRefreshRate: %d", result);
+                return result;
+            }
+            reply->writeInt32(result);
+            return result;
+        }
         case GET_DISPLAY_BRIGHTNESS_SUPPORT: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> displayToken;
@@ -1593,6 +1767,25 @@
             }
             return notifyPowerHint(hintId);
         }
+        case SET_GLOBAL_SHADOW_SETTINGS: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+
+            std::vector<float> shadowConfig;
+            status_t error = data.readFloatVector(&shadowConfig);
+            if (error != NO_ERROR || shadowConfig.size() != 11) {
+                ALOGE("setGlobalShadowSettings: failed to read shadowConfig: %d", error);
+                return error;
+            }
+
+            half4 ambientColor = {shadowConfig[0], shadowConfig[1], shadowConfig[2],
+                                  shadowConfig[3]};
+            half4 spotColor = {shadowConfig[4], shadowConfig[5], shadowConfig[6], shadowConfig[7]};
+            float lightPosY = shadowConfig[8];
+            float lightPosZ = shadowConfig[9];
+            float lightRadius = shadowConfig[10];
+            return setGlobalShadowSettings(ambientColor, spotColor, lightPosY, lightPosZ,
+                                           lightRadius);
+        }
         default: {
             return BBinder::onTransact(code, data, reply, flags);
         }
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index a538e14..9d7d7d0 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -189,48 +189,49 @@
 }
 
 void TransactionCompletedListener::onTransactionCompleted(ListenerStats listenerStats) {
-    std::lock_guard<std::mutex> lock(mMutex);
+    std::unordered_map<CallbackId, CallbackTranslation> callbacksMap;
+    {
+        std::lock_guard<std::mutex> lock(mMutex);
 
-    /* This listener knows all the sp<IBinder> to sp<SurfaceControl> for all its registered
-     * callbackIds, except for when Transactions are merged together. This probably cannot be
-     * solved before this point because the Transactions could be merged together and applied in a
-     * different process.
-     *
-     * Fortunately, we get all the callbacks for this listener for the same frame together at the
-     * same time. This means if any Transactions were merged together, we will get their callbacks
-     * at the same time. We can combine all the sp<IBinder> to sp<SurfaceControl> maps for all the
-     * callbackIds to generate one super map that contains all the sp<IBinder> to sp<SurfaceControl>
-     * that could possibly exist for the callbacks.
-     */
-    std::unordered_map<sp<IBinder>, sp<SurfaceControl>, SurfaceComposerClient::IBinderHash>
-            surfaceControls;
-    for (const auto& transactionStats : listenerStats.transactionStats) {
-        for (auto callbackId : transactionStats.callbackIds) {
-            auto& [callbackFunction, callbackSurfaceControls] = mCallbacks[callbackId];
-            surfaceControls.insert(callbackSurfaceControls.begin(), callbackSurfaceControls.end());
+        /* This listener knows all the sp<IBinder> to sp<SurfaceControl> for all its registered
+         * callbackIds, except for when Transactions are merged together. This probably cannot be
+         * solved before this point because the Transactions could be merged together and applied in
+         * a different process.
+         *
+         * Fortunately, we get all the callbacks for this listener for the same frame together at
+         * the same time. This means if any Transactions were merged together, we will get their
+         * callbacks at the same time. We can combine all the sp<IBinder> to sp<SurfaceControl> maps
+         * for all the callbackIds to generate one super map that contains all the sp<IBinder> to
+         * sp<SurfaceControl> that could possibly exist for the callbacks.
+         */
+        callbacksMap = mCallbacks;
+        for (const auto& transactionStats : listenerStats.transactionStats) {
+            for (auto& callbackId : transactionStats.callbackIds) {
+                mCallbacks.erase(callbackId);
+            }
         }
     }
-
     for (const auto& transactionStats : listenerStats.transactionStats) {
         for (auto callbackId : transactionStats.callbackIds) {
-            auto& [callbackFunction, callbackSurfaceControls] = mCallbacks[callbackId];
+            auto& [callbackFunction, callbackSurfaceControls] = callbacksMap[callbackId];
             if (!callbackFunction) {
                 ALOGE("cannot call null callback function, skipping");
                 continue;
             }
             std::vector<SurfaceControlStats> surfaceControlStats;
             for (const auto& surfaceStats : transactionStats.surfaceStats) {
-                surfaceControlStats.emplace_back(surfaceControls[surfaceStats.surfaceControl],
-                                                 surfaceStats.acquireTime,
-                                                 surfaceStats.previousReleaseFence,
-                                                 surfaceStats.transformHint);
-                surfaceControls[surfaceStats.surfaceControl]->setTransformHint(
-                        surfaceStats.transformHint);
+                surfaceControlStats
+                        .emplace_back(callbacksMap[callbackId]
+                                              .surfaceControls[surfaceStats.surfaceControl],
+                                      surfaceStats.acquireTime, surfaceStats.previousReleaseFence,
+                                      surfaceStats.transformHint);
+                callbacksMap[callbackId]
+                        .surfaceControls[surfaceStats.surfaceControl]
+                        ->setTransformHint(surfaceStats.transformHint);
             }
 
             callbackFunction(transactionStats.latchTime, transactionStats.presentFence,
                              surfaceControlStats);
-            mCallbacks.erase(callbackId);
         }
     }
 }
@@ -1616,6 +1617,26 @@
                                                                            outAllowedConfigs);
 }
 
+status_t SurfaceComposerClient::setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                             int32_t defaultModeId,
+                                                             float minRefreshRate,
+                                                             float maxRefreshRate) {
+    return ComposerService::getComposerService()->setDesiredDisplayConfigSpecs(displayToken,
+                                                                               defaultModeId,
+                                                                               minRefreshRate,
+                                                                               maxRefreshRate);
+}
+
+status_t SurfaceComposerClient::getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                             int32_t* outDefaultModeId,
+                                                             float* outMinRefreshRate,
+                                                             float* outMaxRefreshRate) {
+    return ComposerService::getComposerService()->getDesiredDisplayConfigSpecs(displayToken,
+                                                                               outDefaultModeId,
+                                                                               outMinRefreshRate,
+                                                                               outMaxRefreshRate);
+}
+
 status_t SurfaceComposerClient::getDisplayColorModes(const sp<IBinder>& display,
         Vector<ColorMode>* outColorModes) {
     return ComposerService::getComposerService()->getDisplayColorModes(display, outColorModes);
@@ -1726,6 +1747,14 @@
     return ComposerService::getComposerService()->notifyPowerHint(hintId);
 }
 
+status_t SurfaceComposerClient::setGlobalShadowSettings(const half4& ambientColor,
+                                                        const half4& spotColor, float lightPosY,
+                                                        float lightPosZ, float lightRadius) {
+    return ComposerService::getComposerService()->setGlobalShadowSettings(ambientColor, spotColor,
+                                                                          lightPosY, lightPosZ,
+                                                                          lightRadius);
+}
+
 // ----------------------------------------------------------------------------
 
 status_t ScreenshotClient::capture(const sp<IBinder>& display, const ui::Dataspace reqDataSpace,
diff --git a/libs/gui/include/gui/BLASTBufferQueue.h b/libs/gui/include/gui/BLASTBufferQueue.h
index 6320556..dd0b470 100644
--- a/libs/gui/include/gui/BLASTBufferQueue.h
+++ b/libs/gui/include/gui/BLASTBufferQueue.h
@@ -27,6 +27,7 @@
 #include <utils/RefBase.h>
 
 #include <system/window.h>
+#include <thread>
 
 namespace android {
 
@@ -50,7 +51,6 @@
     void setNextTransaction(SurfaceComposerClient::Transaction *t);
 
     void update(const sp<SurfaceControl>& surface, int width, int height);
-    
 
     virtual ~BLASTBufferQueue() = default;
 
@@ -61,32 +61,36 @@
     BLASTBufferQueue& operator = (const BLASTBufferQueue& rhs);
     BLASTBufferQueue(const BLASTBufferQueue& rhs);
 
-    sp<SurfaceControl> mSurfaceControl;
-    
-    mutable std::mutex mMutex;
+    void processNextBufferLocked() REQUIRES(mMutex);
+    Rect computeCrop(const BufferItem& item);
 
-    static const int MAX_BUFFERS = 2;
+    sp<SurfaceControl> mSurfaceControl;
+
+    std::mutex mMutex;
+    std::condition_variable mCallbackCV;
+    uint64_t mPendingCallbacks GUARDED_BY(mMutex);
+
+    static const int MAX_BUFFERS = 3;
     struct BufferInfo {
         sp<GraphicBuffer> buffer;
         int fence;
     };
-    
-    int mDequeuedBuffers = 0;
 
-    int mWidth;
-    int mHeight;
+    std::queue<const BufferItem> mShadowQueue GUARDED_BY(mMutex);
+    bool mAcquired GUARDED_BY(mMutex);
 
-    BufferItem mLastSubmittedBufferItem;
-    BufferItem mNextCallbackBufferItem;
-    sp<Fence> mLastFence;
+    int mWidth GUARDED_BY(mMutex);
+    int mHeight GUARDED_BY(mMutex);
 
-    std::condition_variable mDequeueWaitCV;
+    BufferItem mLastSubmittedBufferItem GUARDED_BY(mMutex);
+    BufferItem mNextCallbackBufferItem GUARDED_BY(mMutex);
+    sp<Fence> mLastFence GUARDED_BY(mMutex);
 
     sp<IGraphicBufferConsumer> mConsumer;
     sp<IGraphicBufferProducer> mProducer;
     sp<BufferItemConsumer> mBufferItemConsumer;
 
-    SurfaceComposerClient::Transaction* mNextTransaction = nullptr;
+    SurfaceComposerClient::Transaction* mNextTransaction GUARDED_BY(mMutex);
 };
 
 } // namespace android
diff --git a/libs/gui/include/gui/DisplayEventDispatcher.h b/libs/gui/include/gui/DisplayEventDispatcher.h
new file mode 100644
index 0000000..f0b7ff5
--- /dev/null
+++ b/libs/gui/include/gui/DisplayEventDispatcher.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2015 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 <gui/DisplayEventReceiver.h>
+#include <utils/Log.h>
+#include <utils/Looper.h>
+
+namespace android {
+
+class DisplayEventDispatcher : public LooperCallback {
+public:
+    explicit DisplayEventDispatcher(
+            const sp<Looper>& looper,
+            ISurfaceComposer::VsyncSource vsyncSource = ISurfaceComposer::eVsyncSourceApp,
+            ISurfaceComposer::ConfigChanged configChanged =
+                    ISurfaceComposer::eConfigChangedSuppress);
+
+    status_t initialize();
+    void dispose();
+    status_t scheduleVsync();
+
+protected:
+    virtual ~DisplayEventDispatcher() = default;
+
+private:
+    sp<Looper> mLooper;
+    DisplayEventReceiver mReceiver;
+    bool mWaitingForVsync;
+
+    virtual void dispatchVsync(nsecs_t timestamp, PhysicalDisplayId displayId, uint32_t count) = 0;
+    virtual void dispatchHotplug(nsecs_t timestamp, PhysicalDisplayId displayId,
+                                 bool connected) = 0;
+    virtual void dispatchConfigChanged(nsecs_t timestamp, PhysicalDisplayId displayId,
+                                       int32_t configId) = 0;
+
+    virtual int handleEvent(int receiveFd, int events, void* data);
+    bool processPendingEvents(nsecs_t* outTimestamp, PhysicalDisplayId* outDisplayId,
+                              uint32_t* outCount);
+};
+} // namespace android
diff --git a/libs/gui/include/gui/ISurfaceComposer.h b/libs/gui/include/gui/ISurfaceComposer.h
index f2bae98..345425d 100644
--- a/libs/gui/include/gui/ISurfaceComposer.h
+++ b/libs/gui/include/gui/ISurfaceComposer.h
@@ -25,6 +25,8 @@
 
 #include <gui/ITransactionCompletedListener.h>
 
+#include <math/vec4.h>
+
 #include <ui/ConfigStoreTypes.h>
 #include <ui/DisplayedFrameStats.h>
 #include <ui/FrameStats.h>
@@ -399,6 +401,19 @@
     virtual status_t getAllowedDisplayConfigs(const sp<IBinder>& displayToken,
                                               std::vector<int32_t>* outAllowedConfigs) = 0;
     /*
+     * Sets the refresh rate boundaries for display configuration.
+     * For all other parameters, default configuration is used. The index for the default is
+     * corresponding to the configs returned from getDisplayConfigs().
+     */
+    virtual status_t setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                  int32_t defaultModeId, float minRefreshRate,
+                                                  float maxRefreshRate) = 0;
+
+    virtual status_t getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                  int32_t* outDefaultModeId,
+                                                  float* outMinRefreshRate,
+                                                  float* outMaxRefreshRate) = 0;
+    /*
      * Gets whether brightness operations are supported on a display.
      *
      * displayToken
@@ -439,6 +454,28 @@
      * Returns NO_ERROR upon success.
      */
     virtual status_t notifyPowerHint(int32_t hintId) = 0;
+
+    /*
+     * Sets the global configuration for all the shadows drawn by SurfaceFlinger. Shadow follows
+     * material design guidelines.
+     *
+     * ambientColor
+     *      Color to the ambient shadow. The alpha is premultiplied.
+     *
+     * spotColor
+     *      Color to the spot shadow. The alpha is premultiplied. The position of the spot shadow
+     *      depends on the light position.
+     *
+     * lightPosY/lightPosZ
+     *      Position of the light used to cast the spot shadow. The X value is always the display
+     *      width / 2.
+     *
+     * lightRadius
+     *      Radius of the light casting the shadow.
+     */
+    virtual status_t setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
+                                             float lightPosY, float lightPosZ,
+                                             float lightRadius) = 0;
 };
 
 // ----------------------------------------------------------------------------
@@ -488,10 +525,13 @@
         REMOVE_REGION_SAMPLING_LISTENER,
         SET_ALLOWED_DISPLAY_CONFIGS,
         GET_ALLOWED_DISPLAY_CONFIGS,
+        SET_DESIRED_DISPLAY_CONFIG_SPECS,
+        GET_DESIRED_DISPLAY_CONFIG_SPECS,
         GET_DISPLAY_BRIGHTNESS_SUPPORT,
         SET_DISPLAY_BRIGHTNESS,
         CAPTURE_SCREEN_BY_ID,
         NOTIFY_POWER_HINT,
+        SET_GLOBAL_SHADOW_SETTINGS,
         // Always append new enum to the end.
     };
 
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index 37387ac..2c0b143 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -129,6 +129,22 @@
     static status_t getAllowedDisplayConfigs(const sp<IBinder>& displayToken,
                                              std::vector<int32_t>* outAllowedConfigs);
 
+    // Sets the refresh rate boundaries for display configuration.
+    // For all other parameters, default configuration is used. The index for the default is
+    // corresponting to the configs returned from getDisplayConfigs().
+    static status_t setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                 int32_t defaultModeId, float minRefreshRate,
+                                                 float maxRefreshRate);
+    // Gets the refresh rate boundaries for display configuration.
+    // For all other parameters, default configuration is used. The index for the default is
+    // corresponting to the configs returned from getDisplayConfigs().
+    // The reason is passed in for telemetry tracking, and it corresponds to the list of all
+    // the policy rules that were used.
+    static status_t getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                 int32_t* outDefaultModeId,
+                                                 float* outMinRefreshRate,
+                                                 float* outMaxRefreshRate);
+
     // Gets the list of supported color modes for the given display
     static status_t getDisplayColorModes(const sp<IBinder>& display,
             Vector<ui::ColorMode>* outColorModes);
@@ -214,6 +230,27 @@
      */
     static status_t notifyPowerHint(int32_t hintId);
 
+    /*
+     * Sets the global configuration for all the shadows drawn by SurfaceFlinger. Shadow follows
+     * material design guidelines.
+     *
+     * ambientColor
+     *      Color to the ambient shadow. The alpha is premultiplied.
+     *
+     * spotColor
+     *      Color to the spot shadow. The alpha is premultiplied. The position of the spot shadow
+     *      depends on the light position.
+     *
+     * lightPosY/lightPosZ
+     *      Position of the light used to cast the spot shadow. The X value is always the display
+     *      width / 2.
+     *
+     * lightRadius
+     *      Radius of the light casting the shadow.
+     */
+    static status_t setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
+                                            float lightPosY, float lightPosZ, float lightRadius);
+
     // ------------------------------------------------------------------------
     // surface creation / destruction
 
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index ff22913..ae6c5cf 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -19,6 +19,8 @@
 #include <gui/BLASTBufferQueue.h>
 
 #include <android/hardware/graphics/common/1.2/types.h>
+#include <gui/BufferQueueCore.h>
+#include <gui/BufferQueueProducer.h>
 #include <gui/IGraphicBufferProducer.h>
 #include <gui/IProducerListener.h>
 #include <gui/SurfaceComposerClient.h>
@@ -65,9 +67,11 @@
         return mBlastBufferQueueAdapter->mSurfaceControl;
     }
 
-    void waitForCallback() {
+    void waitForCallbacks() {
         std::unique_lock lock{mBlastBufferQueueAdapter->mMutex};
-        mBlastBufferQueueAdapter->mDequeueWaitCV.wait_for(lock, 1s);
+        while (mBlastBufferQueueAdapter->mPendingCallbacks > 0) {
+            mBlastBufferQueueAdapter->mCallbackCV.wait(lock);
+        }
     }
 
 private:
@@ -116,10 +120,21 @@
                 .apply();
     }
 
-    void fillBuffer(uint32_t* bufData, uint32_t width, uint32_t height, uint32_t stride, uint8_t r,
-                    uint8_t g, uint8_t b) {
-        for (uint32_t row = 0; row < height; row++) {
-            for (uint32_t col = 0; col < width; col++) {
+    void setUpProducer(BLASTBufferQueueHelper adapter, sp<IGraphicBufferProducer>& producer) {
+        auto igbProducer = adapter.getIGraphicBufferProducer();
+        ASSERT_NE(nullptr, igbProducer.get());
+        IGraphicBufferProducer::QueueBufferOutput qbOutput;
+        ASSERT_EQ(NO_ERROR,
+                  igbProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false,
+                                       &qbOutput));
+        ASSERT_NE(ui::Transform::orientation_flags::ROT_INVALID, qbOutput.transformHint);
+        producer = igbProducer;
+    }
+
+    void fillBuffer(uint32_t* bufData, Rect rect, uint32_t stride, uint8_t r, uint8_t g,
+                    uint8_t b) {
+        for (uint32_t row = rect.top; row < rect.bottom; row++) {
+            for (uint32_t col = rect.left; col < rect.right; col++) {
                 uint8_t* pixel = (uint8_t*)(bufData + (row * stride) + col);
                 *pixel = r;
                 *(pixel + 1) = g;
@@ -129,7 +144,7 @@
         }
     }
 
-    void checkScreenCapture(uint8_t r, uint8_t g, uint8_t b) {
+    void checkScreenCapture(uint8_t r, uint8_t g, uint8_t b, Rect region) {
         const auto width = mScreenCaptureBuf->getWidth();
         const auto height = mScreenCaptureBuf->getHeight();
         const auto stride = mScreenCaptureBuf->getStride();
@@ -141,9 +156,16 @@
         for (uint32_t row = 0; row < height; row++) {
             for (uint32_t col = 0; col < width; col++) {
                 uint8_t* pixel = (uint8_t*)(bufData + (row * stride) + col);
-                EXPECT_EQ(r, *(pixel));
-                EXPECT_EQ(g, *(pixel + 1));
-                EXPECT_EQ(b, *(pixel + 2));
+                if (row >= region.top && row < region.bottom && col >= region.left &&
+                    col < region.right) {
+                    EXPECT_EQ(r, *(pixel));
+                    EXPECT_EQ(g, *(pixel + 1));
+                    EXPECT_EQ(b, *(pixel + 2));
+                } else {
+                    EXPECT_EQ(0, *(pixel));
+                    EXPECT_EQ(0, *(pixel + 1));
+                    EXPECT_EQ(0, *(pixel + 2));
+                }
             }
         }
         mScreenCaptureBuf->unlock();
@@ -195,14 +217,8 @@
     uint8_t b = 0;
 
     BLASTBufferQueueHelper adapter(mSurfaceControl, mDisplayWidth, mDisplayHeight);
-    auto igbProducer = adapter.getIGraphicBufferProducer();
-    ASSERT_NE(nullptr, igbProducer.get());
-    IGraphicBufferProducer::QueueBufferOutput qbOutput;
-    ASSERT_EQ(NO_ERROR,
-              igbProducer->connect(new DummyProducerListener, NATIVE_WINDOW_API_CPU, false,
-                                   &qbOutput));
-    ASSERT_EQ(NO_ERROR, igbProducer->setMaxDequeuedBufferCount(3));
-    ASSERT_NE(ui::Transform::orientation_flags::ROT_INVALID, qbOutput.transformHint);
+    sp<IGraphicBufferProducer> igbProducer;
+    setUpProducer(adapter, igbProducer);
 
     int slot;
     sp<Fence> fence;
@@ -216,9 +232,10 @@
     uint32_t* bufData;
     buf->lock(static_cast<uint32_t>(GraphicBuffer::USAGE_SW_WRITE_OFTEN),
               reinterpret_cast<void**>(&bufData));
-    fillBuffer(bufData, buf->getWidth(), buf->getHeight(), buf->getStride(), r, g, b);
+    fillBuffer(bufData, Rect(buf->getWidth(), buf->getHeight()), buf->getStride(), r, g, b);
     buf->unlock();
 
+    IGraphicBufferProducer::QueueBufferOutput qbOutput;
     IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
                                                    Rect(mDisplayWidth, mDisplayHeight),
                                                    NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
@@ -226,7 +243,7 @@
     igbProducer->queueBuffer(slot, input, &qbOutput);
     ASSERT_NE(ui::Transform::orientation_flags::ROT_INVALID, qbOutput.transformHint);
 
-    adapter.waitForCallback();
+    adapter.waitForCallbacks();
 
     // capture screen and verify that it is red
     bool capturedSecureLayers;
@@ -235,6 +252,152 @@
                                        ui::Dataspace::V0_SRGB, ui::PixelFormat::RGBA_8888, Rect(),
                                        mDisplayWidth, mDisplayHeight,
                                        /*useIdentityTransform*/ false));
-    ASSERT_NO_FATAL_FAILURE(checkScreenCapture(r, g, b));
+    ASSERT_NO_FATAL_FAILURE(
+            checkScreenCapture(r, g, b, {0, 0, (int32_t)mDisplayWidth, (int32_t)mDisplayHeight}));
 }
+
+TEST_F(BLASTBufferQueueTest, TripleBuffering) {
+    BLASTBufferQueueHelper adapter(mSurfaceControl, mDisplayWidth, mDisplayHeight);
+    sp<IGraphicBufferProducer> igbProducer;
+    setUpProducer(adapter, igbProducer);
+
+    std::vector<std::pair<int, sp<Fence>>> allocated;
+    for (int i = 0; i < 3; i++) {
+        int slot;
+        sp<Fence> fence;
+        sp<GraphicBuffer> buf;
+        auto ret = igbProducer->dequeueBuffer(&slot, &fence, mDisplayWidth, mDisplayHeight,
+                                              PIXEL_FORMAT_RGBA_8888, GRALLOC_USAGE_SW_WRITE_OFTEN,
+                                              nullptr, nullptr);
+        ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, ret);
+        ASSERT_EQ(OK, igbProducer->requestBuffer(slot, &buf));
+        allocated.push_back({slot, fence});
+    }
+    for (int i = 0; i < allocated.size(); i++) {
+        igbProducer->cancelBuffer(allocated[i].first, allocated[i].second);
+    }
+
+    for (int i = 0; i < 10; i++) {
+        int slot;
+        sp<Fence> fence;
+        sp<GraphicBuffer> buf;
+        auto ret = igbProducer->dequeueBuffer(&slot, &fence, mDisplayWidth, mDisplayHeight,
+                                              PIXEL_FORMAT_RGBA_8888, GRALLOC_USAGE_SW_WRITE_OFTEN,
+                                              nullptr, nullptr);
+        ASSERT_EQ(NO_ERROR, ret);
+        IGraphicBufferProducer::QueueBufferOutput qbOutput;
+        IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+                                                       Rect(mDisplayWidth, mDisplayHeight),
+                                                       NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
+                                                       Fence::NO_FENCE);
+        igbProducer->queueBuffer(slot, input, &qbOutput);
+    }
+    adapter.waitForCallbacks();
+}
+
+TEST_F(BLASTBufferQueueTest, SetCrop_Item) {
+    uint8_t r = 255;
+    uint8_t g = 0;
+    uint8_t b = 0;
+
+    BLASTBufferQueueHelper adapter(mSurfaceControl, mDisplayWidth, mDisplayHeight);
+    sp<IGraphicBufferProducer> igbProducer;
+    setUpProducer(adapter, igbProducer);
+    int slot;
+    sp<Fence> fence;
+    sp<GraphicBuffer> buf;
+    auto ret = igbProducer->dequeueBuffer(&slot, &fence, mDisplayWidth, mDisplayHeight,
+                                          PIXEL_FORMAT_RGBA_8888, GRALLOC_USAGE_SW_WRITE_OFTEN,
+                                          nullptr, nullptr);
+    ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, ret);
+    ASSERT_EQ(OK, igbProducer->requestBuffer(slot, &buf));
+
+    uint32_t* bufData;
+    buf->lock(static_cast<uint32_t>(GraphicBuffer::USAGE_SW_WRITE_OFTEN),
+              reinterpret_cast<void**>(&bufData));
+    fillBuffer(bufData, Rect(buf->getWidth(), buf->getHeight() / 2), buf->getStride(), r, g, b);
+    buf->unlock();
+
+    IGraphicBufferProducer::QueueBufferOutput qbOutput;
+    IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+                                                   Rect(mDisplayWidth, mDisplayHeight / 2),
+                                                   NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
+                                                   Fence::NO_FENCE);
+    igbProducer->queueBuffer(slot, input, &qbOutput);
+    ASSERT_NE(ui::Transform::orientation_flags::ROT_INVALID, qbOutput.transformHint);
+
+    adapter.waitForCallbacks();
+    // capture screen and verify that it is red
+    bool capturedSecureLayers;
+    ASSERT_EQ(NO_ERROR,
+              mComposer->captureScreen(mDisplayToken, &mScreenCaptureBuf, capturedSecureLayers,
+                                       ui::Dataspace::V0_SRGB, ui::PixelFormat::RGBA_8888, Rect(),
+                                       mDisplayWidth, mDisplayHeight,
+                                       /*useIdentityTransform*/ false));
+    ASSERT_NO_FATAL_FAILURE(
+            checkScreenCapture(r, g, b, {0, 0, (int32_t)mDisplayWidth, (int32_t)mDisplayHeight}));
+}
+
+TEST_F(BLASTBufferQueueTest, SetCrop_ScalingModeScaleCrop) {
+    uint8_t r = 255;
+    uint8_t g = 0;
+    uint8_t b = 0;
+
+    int32_t bufferSideLength =
+            (mDisplayWidth < mDisplayHeight) ? mDisplayWidth / 2 : mDisplayHeight / 2;
+    int32_t finalCropSideLength = bufferSideLength / 2;
+
+    auto bg = mClient->createSurface(String8("BGTest"), 0, 0, PIXEL_FORMAT_RGBA_8888,
+                                     ISurfaceComposerClient::eFXSurfaceColor);
+    ASSERT_NE(nullptr, bg.get());
+    Transaction t;
+    t.setLayerStack(bg, 0)
+            .setCrop_legacy(bg, Rect(0, 0, mDisplayWidth, mDisplayHeight))
+            .setColor(bg, half3{0, 0, 0})
+            .setLayer(bg, 0)
+            .apply();
+
+    BLASTBufferQueueHelper adapter(mSurfaceControl, bufferSideLength, bufferSideLength);
+    sp<IGraphicBufferProducer> igbProducer;
+    setUpProducer(adapter, igbProducer);
+    int slot;
+    sp<Fence> fence;
+    sp<GraphicBuffer> buf;
+    auto ret = igbProducer->dequeueBuffer(&slot, &fence, bufferSideLength, bufferSideLength,
+                                          PIXEL_FORMAT_RGBA_8888, GRALLOC_USAGE_SW_WRITE_OFTEN,
+                                          nullptr, nullptr);
+    ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, ret);
+    ASSERT_EQ(OK, igbProducer->requestBuffer(slot, &buf));
+
+    uint32_t* bufData;
+    buf->lock(static_cast<uint32_t>(GraphicBuffer::USAGE_SW_WRITE_OFTEN),
+              reinterpret_cast<void**>(&bufData));
+    fillBuffer(bufData, Rect(buf->getWidth(), buf->getHeight()), buf->getStride(), 0, 0, 0);
+    fillBuffer(bufData,
+               Rect(finalCropSideLength / 2, 0, buf->getWidth() - finalCropSideLength / 2,
+                    buf->getHeight()),
+               buf->getStride(), r, g, b);
+    buf->unlock();
+
+    IGraphicBufferProducer::QueueBufferOutput qbOutput;
+    IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+                                                   Rect(bufferSideLength, finalCropSideLength),
+                                                   NATIVE_WINDOW_SCALING_MODE_SCALE_CROP, 0,
+                                                   Fence::NO_FENCE);
+    igbProducer->queueBuffer(slot, input, &qbOutput);
+    ASSERT_NE(ui::Transform::orientation_flags::ROT_INVALID, qbOutput.transformHint);
+
+    adapter.waitForCallbacks();
+    // capture screen and verify that it is red
+    bool capturedSecureLayers;
+    ASSERT_EQ(NO_ERROR,
+              mComposer->captureScreen(mDisplayToken, &mScreenCaptureBuf, capturedSecureLayers,
+                                       ui::Dataspace::V0_SRGB, ui::PixelFormat::RGBA_8888, Rect(),
+                                       mDisplayWidth, mDisplayHeight,
+                                       /*useIdentityTransform*/ false));
+    ASSERT_NO_FATAL_FAILURE(
+            checkScreenCapture(r, g, b,
+                               {0, 0, (int32_t)bufferSideLength, (int32_t)bufferSideLength}));
+}
+
 } // namespace android
diff --git a/libs/gui/tests/IGraphicBufferProducer_test.cpp b/libs/gui/tests/IGraphicBufferProducer_test.cpp
index aef7aed..103f775 100644
--- a/libs/gui/tests/IGraphicBufferProducer_test.cpp
+++ b/libs/gui/tests/IGraphicBufferProducer_test.cpp
@@ -543,7 +543,6 @@
     // Should now be able to dequeue up to minBuffers times
     DequeueBufferResult result;
     for (int i = 0; i < minBuffers; ++i) {
-
         EXPECT_EQ(OK, ~IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION &
                 (dequeueBuffer(DEFAULT_WIDTH, DEFAULT_HEIGHT, DEFAULT_FORMAT,
                               TEST_PRODUCER_USAGE_BITS, &result)))
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index a4fdb35..3d90369 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -831,8 +831,25 @@
                                       std::vector<int32_t>* /*outAllowedConfigs*/) override {
         return NO_ERROR;
     }
+    status_t setDesiredDisplayConfigSpecs(const sp<IBinder>& /*displayToken*/,
+                                          int32_t /*defaultModeId*/, float /*minRefreshRate*/,
+                                          float /*maxRefreshRate*/) override {
+        return NO_ERROR;
+    }
+    status_t getDesiredDisplayConfigSpecs(const sp<IBinder>& /*displayToken*/,
+                                          int32_t* /*outDefaultModeId*/,
+                                          float* /*outMinRefreshRate*/,
+                                          float* /*outMaxRefreshRate*/) override {
+        return NO_ERROR;
+    };
     status_t notifyPowerHint(int32_t /*hintId*/) override { return NO_ERROR; }
 
+    status_t setGlobalShadowSettings(const half4& /*ambientColor*/, const half4& /*spotColor*/,
+                                     float /*lightPosY*/, float /*lightPosZ*/,
+                                     float /*lightRadius*/) override {
+        return NO_ERROR;
+    }
+
 protected:
     IBinder* onAsBinder() override { return nullptr; }
 
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index 34b305e..8ccbc7f 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -20,6 +20,7 @@
 #include <limits.h>
 
 #include <input/Input.h>
+#include <input/InputDevice.h>
 #include <input/InputEventLabels.h>
 
 #ifdef __ANDROID__
@@ -41,6 +42,21 @@
 
 // --- InputEvent ---
 
+const char* inputEventTypeToString(int32_t type) {
+    switch (type) {
+        case AINPUT_EVENT_TYPE_KEY: {
+            return "KEY";
+        }
+        case AINPUT_EVENT_TYPE_MOTION: {
+            return "MOTION";
+        }
+        case AINPUT_EVENT_TYPE_FOCUS: {
+            return "FOCUS";
+        }
+    }
+    return "UNKNOWN";
+}
+
 void InputEvent::initialize(int32_t deviceId, int32_t source, int32_t displayId) {
     mDeviceId = deviceId;
     mSource = source;
@@ -587,6 +603,20 @@
     return getAxisByLabel(label);
 }
 
+// --- FocusEvent ---
+
+void FocusEvent::initialize(bool hasFocus, bool inTouchMode) {
+    InputEvent::initialize(ReservedInputDeviceId::VIRTUAL_KEYBOARD_ID, AINPUT_SOURCE_UNKNOWN,
+                           ADISPLAY_ID_NONE);
+    mHasFocus = hasFocus;
+    mInTouchMode = inTouchMode;
+}
+
+void FocusEvent::initialize(const FocusEvent& from) {
+    InputEvent::initialize(from);
+    mHasFocus = from.mHasFocus;
+    mInTouchMode = from.mInTouchMode;
+}
 
 // --- PooledInputEventFactory ---
 
@@ -595,43 +625,52 @@
 }
 
 PooledInputEventFactory::~PooledInputEventFactory() {
-    for (size_t i = 0; i < mKeyEventPool.size(); i++) {
-        delete mKeyEventPool.itemAt(i);
-    }
-    for (size_t i = 0; i < mMotionEventPool.size(); i++) {
-        delete mMotionEventPool.itemAt(i);
-    }
 }
 
 KeyEvent* PooledInputEventFactory::createKeyEvent() {
-    if (!mKeyEventPool.isEmpty()) {
-        KeyEvent* event = mKeyEventPool.top();
-        mKeyEventPool.pop();
-        return event;
+    if (mKeyEventPool.empty()) {
+        return new KeyEvent();
     }
-    return new KeyEvent();
+    KeyEvent* event = mKeyEventPool.front().release();
+    mKeyEventPool.pop();
+    return event;
 }
 
 MotionEvent* PooledInputEventFactory::createMotionEvent() {
-    if (!mMotionEventPool.isEmpty()) {
-        MotionEvent* event = mMotionEventPool.top();
-        mMotionEventPool.pop();
-        return event;
+    if (mMotionEventPool.empty()) {
+        return new MotionEvent();
     }
-    return new MotionEvent();
+    MotionEvent* event = mMotionEventPool.front().release();
+    mMotionEventPool.pop();
+    return event;
+}
+
+FocusEvent* PooledInputEventFactory::createFocusEvent() {
+    if (mFocusEventPool.empty()) {
+        return new FocusEvent();
+    }
+    FocusEvent* event = mFocusEventPool.front().release();
+    mFocusEventPool.pop();
+    return event;
 }
 
 void PooledInputEventFactory::recycle(InputEvent* event) {
     switch (event->getType()) {
     case AINPUT_EVENT_TYPE_KEY:
         if (mKeyEventPool.size() < mMaxPoolSize) {
-            mKeyEventPool.push(static_cast<KeyEvent*>(event));
+            mKeyEventPool.push(std::unique_ptr<KeyEvent>(static_cast<KeyEvent*>(event)));
             return;
         }
         break;
     case AINPUT_EVENT_TYPE_MOTION:
         if (mMotionEventPool.size() < mMaxPoolSize) {
-            mMotionEventPool.push(static_cast<MotionEvent*>(event));
+            mMotionEventPool.push(std::unique_ptr<MotionEvent>(static_cast<MotionEvent*>(event)));
+            return;
+        }
+        break;
+    case AINPUT_EVENT_TYPE_FOCUS:
+        if (mFocusEventPool.size() < mMaxPoolSize) {
+            mFocusEventPool.push(std::unique_ptr<FocusEvent>(static_cast<FocusEvent*>(event)));
             return;
         }
         break;
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp
index a5dd3c0..200e1f3 100644
--- a/libs/input/InputTransport.cpp
+++ b/libs/input/InputTransport.cpp
@@ -14,7 +14,7 @@
 static constexpr bool DEBUG_CHANNEL_LIFECYCLE = false;
 
 // Log debug messages about transport actions
-#define DEBUG_TRANSPORT_ACTIONS 0
+static constexpr bool DEBUG_TRANSPORT_ACTIONS = false;
 
 // Log debug messages about touch event resampling
 #define DEBUG_RESAMPLING 0
@@ -88,6 +88,10 @@
     return (source & AINPUT_SOURCE_CLASS_POINTER) == AINPUT_SOURCE_CLASS_POINTER;
 }
 
+inline static const char* toString(bool value) {
+    return value ? "true" : "false";
+}
+
 // --- InputMessage ---
 
 bool InputMessage::isValid(size_t actualSize) const {
@@ -99,6 +103,8 @@
                 return body.motion.pointerCount > 0 && body.motion.pointerCount <= MAX_POINTERS;
             case Type::FINISHED:
                 return true;
+            case Type::FOCUS:
+                return true;
         }
     }
     return false;
@@ -112,6 +118,8 @@
             return sizeof(Header) + body.motion.size();
         case Type::FINISHED:
             return sizeof(Header) + body.finished.size();
+        case Type::FOCUS:
+            return sizeof(Header) + body.focus.size();
     }
     return sizeof(Header);
 }
@@ -216,8 +224,10 @@
             msg->body.finished.handled = body.finished.handled;
             break;
         }
-        default: {
-            LOG_FATAL("Unexpected message type %i", header.type);
+        case InputMessage::Type::FOCUS: {
+            msg->body.focus.seq = body.focus.seq;
+            msg->body.focus.hasFocus = body.focus.hasFocus;
+            msg->body.focus.inTouchMode = body.focus.inTouchMode;
             break;
         }
     }
@@ -432,14 +442,13 @@
                 mChannel->getName().c_str(), keyCode);
         ATRACE_NAME(message.c_str());
     }
-#if DEBUG_TRANSPORT_ACTIONS
-    ALOGD("channel '%s' publisher ~ publishKeyEvent: seq=%u, deviceId=%d, source=0x%x, "
-            "action=0x%x, flags=0x%x, keyCode=%d, scanCode=%d, metaState=0x%x, repeatCount=%d,"
-            "downTime=%" PRId64 ", eventTime=%" PRId64,
-            mChannel->getName().c_str(), seq,
-            deviceId, source, action, flags, keyCode, scanCode, metaState, repeatCount,
-            downTime, eventTime);
-#endif
+    if (DEBUG_TRANSPORT_ACTIONS) {
+        ALOGD("channel '%s' publisher ~ publishKeyEvent: seq=%u, deviceId=%d, source=0x%x, "
+              "action=0x%x, flags=0x%x, keyCode=%d, scanCode=%d, metaState=0x%x, repeatCount=%d,"
+              "downTime=%" PRId64 ", eventTime=%" PRId64,
+              mChannel->getName().c_str(), seq, deviceId, source, action, flags, keyCode, scanCode,
+              metaState, repeatCount, downTime, eventTime);
+    }
 
     if (!seq) {
         ALOGE("Attempted to publish a key event with sequence number 0.");
@@ -476,18 +485,18 @@
                 mChannel->getName().c_str(), action);
         ATRACE_NAME(message.c_str());
     }
-#if DEBUG_TRANSPORT_ACTIONS
-    ALOGD("channel '%s' publisher ~ publishMotionEvent: seq=%u, deviceId=%d, source=0x%x, "
-            "displayId=%" PRId32 ", "
-            "action=0x%x, actionButton=0x%08x, flags=0x%x, edgeFlags=0x%x, "
-            "metaState=0x%x, buttonState=0x%x, classification=%s, xOffset=%f, yOffset=%f, "
-            "xPrecision=%f, yPrecision=%f, downTime=%" PRId64 ", eventTime=%" PRId64 ", "
-            "pointerCount=%" PRIu32,
-            mChannel->getName().c_str(), seq,
-            deviceId, source, displayId, action, actionButton, flags, edgeFlags, metaState,
-            buttonState, motionClassificationToString(classification),
-            xOffset, yOffset, xPrecision, yPrecision, downTime, eventTime, pointerCount);
-#endif
+    if (DEBUG_TRANSPORT_ACTIONS) {
+        ALOGD("channel '%s' publisher ~ publishMotionEvent: seq=%u, deviceId=%d, source=0x%x, "
+              "displayId=%" PRId32 ", "
+              "action=0x%x, actionButton=0x%08x, flags=0x%x, edgeFlags=0x%x, "
+              "metaState=0x%x, buttonState=0x%x, classification=%s, xOffset=%f, yOffset=%f, "
+              "xPrecision=%f, yPrecision=%f, downTime=%" PRId64 ", eventTime=%" PRId64 ", "
+              "pointerCount=%" PRIu32,
+              mChannel->getName().c_str(), seq, deviceId, source, displayId, action, actionButton,
+              flags, edgeFlags, metaState, buttonState,
+              motionClassificationToString(classification), xOffset, yOffset, xPrecision,
+              yPrecision, downTime, eventTime, pointerCount);
+    }
 
     if (!seq) {
         ALOGE("Attempted to publish a motion event with sequence number 0.");
@@ -530,11 +539,27 @@
     return mChannel->sendMessage(&msg);
 }
 
+status_t InputPublisher::publishFocusEvent(uint32_t seq, bool hasFocus, bool inTouchMode) {
+    if (ATRACE_ENABLED()) {
+        std::string message =
+                StringPrintf("publishFocusEvent(inputChannel=%s, hasFocus=%s, inTouchMode=%s)",
+                             mChannel->getName().c_str(), toString(hasFocus),
+                             toString(inTouchMode));
+        ATRACE_NAME(message.c_str());
+    }
+
+    InputMessage msg;
+    msg.header.type = InputMessage::Type::FOCUS;
+    msg.body.focus.seq = seq;
+    msg.body.focus.hasFocus = hasFocus ? 1 : 0;
+    msg.body.focus.inTouchMode = inTouchMode ? 1 : 0;
+    return mChannel->sendMessage(&msg);
+}
+
 status_t InputPublisher::receiveFinishedSignal(uint32_t* outSeq, bool* outHandled) {
-#if DEBUG_TRANSPORT_ACTIONS
-    ALOGD("channel '%s' publisher ~ receiveFinishedSignal",
-            mChannel->getName().c_str());
-#endif
+    if (DEBUG_TRANSPORT_ACTIONS) {
+        ALOGD("channel '%s' publisher ~ receiveFinishedSignal", mChannel->getName().c_str());
+    }
 
     InputMessage msg;
     status_t result = mChannel->receiveMessage(&msg);
@@ -549,7 +574,7 @@
         return UNKNOWN_ERROR;
     }
     *outSeq = msg.body.finished.seq;
-    *outHandled = msg.body.finished.handled;
+    *outHandled = msg.body.finished.handled == 1;
     return OK;
 }
 
@@ -567,12 +592,12 @@
     return property_get_bool(PROPERTY_RESAMPLING_ENABLED, true);
 }
 
-status_t InputConsumer::consume(InputEventFactoryInterface* factory,
-        bool consumeBatches, nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) {
-#if DEBUG_TRANSPORT_ACTIONS
-    ALOGD("channel '%s' consumer ~ consume: consumeBatches=%s, frameTime=%" PRId64,
-            mChannel->getName().c_str(), consumeBatches ? "true" : "false", frameTime);
-#endif
+status_t InputConsumer::consume(InputEventFactoryInterface* factory, bool consumeBatches,
+                                nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) {
+    if (DEBUG_TRANSPORT_ACTIONS) {
+        ALOGD("channel '%s' consumer ~ consume: consumeBatches=%s, frameTime=%" PRId64,
+              mChannel->getName().c_str(), toString(consumeBatches), frameTime);
+    }
 
     *outSeq = 0;
     *outEvent = nullptr;
@@ -592,10 +617,10 @@
                 if (consumeBatches || result != WOULD_BLOCK) {
                     result = consumeBatch(factory, frameTime, outSeq, outEvent);
                     if (*outEvent) {
-#if DEBUG_TRANSPORT_ACTIONS
-                        ALOGD("channel '%s' consumer ~ consumed batch event, seq=%u",
-                                mChannel->getName().c_str(), *outSeq);
-#endif
+                        if (DEBUG_TRANSPORT_ACTIONS) {
+                            ALOGD("channel '%s' consumer ~ consumed batch event, seq=%u",
+                                  mChannel->getName().c_str(), *outSeq);
+                        }
                         break;
                     }
                 }
@@ -611,10 +636,10 @@
                 initializeKeyEvent(keyEvent, &mMsg);
                 *outSeq = mMsg.body.key.seq;
                 *outEvent = keyEvent;
-#if DEBUG_TRANSPORT_ACTIONS
-            ALOGD("channel '%s' consumer ~ consumed key event, seq=%u",
-                    mChannel->getName().c_str(), *outSeq);
-#endif
+                if (DEBUG_TRANSPORT_ACTIONS) {
+                    ALOGD("channel '%s' consumer ~ consumed key event, seq=%u",
+                          mChannel->getName().c_str(), *outSeq);
+                }
             break;
             }
 
@@ -624,10 +649,10 @@
                     Batch& batch = mBatches.editItemAt(batchIndex);
                     if (canAddSample(batch, &mMsg)) {
                         batch.samples.push(mMsg);
-#if DEBUG_TRANSPORT_ACTIONS
-                    ALOGD("channel '%s' consumer ~ appended to batch event",
-                            mChannel->getName().c_str());
-#endif
+                        if (DEBUG_TRANSPORT_ACTIONS) {
+                            ALOGD("channel '%s' consumer ~ appended to batch event",
+                                  mChannel->getName().c_str());
+                        }
                     break;
                     } else if (isPointerEvent(mMsg.body.motion.source) &&
                                mMsg.body.motion.action == AMOTION_EVENT_ACTION_CANCEL) {
@@ -649,47 +674,58 @@
                         if (result) {
                             return result;
                         }
-#if DEBUG_TRANSPORT_ACTIONS
-                    ALOGD("channel '%s' consumer ~ consumed batch event and "
-                            "deferred current event, seq=%u",
-                            mChannel->getName().c_str(), *outSeq);
-#endif
+                        if (DEBUG_TRANSPORT_ACTIONS) {
+                            ALOGD("channel '%s' consumer ~ consumed batch event and "
+                                  "deferred current event, seq=%u",
+                                  mChannel->getName().c_str(), *outSeq);
+                        }
                     break;
                     }
                 }
 
-            // Start a new batch if needed.
-            if (mMsg.body.motion.action == AMOTION_EVENT_ACTION_MOVE
-                    || mMsg.body.motion.action == AMOTION_EVENT_ACTION_HOVER_MOVE) {
-                mBatches.push();
-                Batch& batch = mBatches.editTop();
-                batch.samples.push(mMsg);
-#if DEBUG_TRANSPORT_ACTIONS
-                ALOGD("channel '%s' consumer ~ started batch event",
-                        mChannel->getName().c_str());
-#endif
+                // Start a new batch if needed.
+                if (mMsg.body.motion.action == AMOTION_EVENT_ACTION_MOVE ||
+                    mMsg.body.motion.action == AMOTION_EVENT_ACTION_HOVER_MOVE) {
+                    mBatches.push();
+                    Batch& batch = mBatches.editTop();
+                    batch.samples.push(mMsg);
+                    if (DEBUG_TRANSPORT_ACTIONS) {
+                        ALOGD("channel '%s' consumer ~ started batch event",
+                              mChannel->getName().c_str());
+                    }
+                    break;
+                }
+
+                MotionEvent* motionEvent = factory->createMotionEvent();
+                if (!motionEvent) return NO_MEMORY;
+
+                updateTouchState(mMsg);
+                initializeMotionEvent(motionEvent, &mMsg);
+                *outSeq = mMsg.body.motion.seq;
+                *outEvent = motionEvent;
+
+                if (DEBUG_TRANSPORT_ACTIONS) {
+                    ALOGD("channel '%s' consumer ~ consumed motion event, seq=%u",
+                          mChannel->getName().c_str(), *outSeq);
+                }
                 break;
             }
 
-            MotionEvent* motionEvent = factory->createMotionEvent();
-            if (! motionEvent) return NO_MEMORY;
-
-            updateTouchState(mMsg);
-            initializeMotionEvent(motionEvent, &mMsg);
-            *outSeq = mMsg.body.motion.seq;
-            *outEvent = motionEvent;
-
-#if DEBUG_TRANSPORT_ACTIONS
-            ALOGD("channel '%s' consumer ~ consumed motion event, seq=%u",
-                    mChannel->getName().c_str(), *outSeq);
-#endif
-            break;
+            case InputMessage::Type::FINISHED: {
+                LOG_ALWAYS_FATAL("Consumed a FINISHED message, which should never be seen by "
+                                 "InputConsumer!");
+                break;
             }
 
-        default:
-            ALOGE("channel '%s' consumer ~ Received unexpected message of type %d",
-                    mChannel->getName().c_str(), mMsg.header.type);
-            return UNKNOWN_ERROR;
+            case InputMessage::Type::FOCUS: {
+                FocusEvent* focusEvent = factory->createFocusEvent();
+                if (!focusEvent) return NO_MEMORY;
+
+                initializeFocusEvent(focusEvent, &mMsg);
+                *outSeq = mMsg.body.focus.seq;
+                *outEvent = focusEvent;
+                break;
+            }
         }
     }
     return OK;
@@ -1014,10 +1050,10 @@
 }
 
 status_t InputConsumer::sendFinishedSignal(uint32_t seq, bool handled) {
-#if DEBUG_TRANSPORT_ACTIONS
-    ALOGD("channel '%s' consumer ~ sendFinishedSignal: seq=%u, handled=%s",
-            mChannel->getName().c_str(), seq, handled ? "true" : "false");
-#endif
+    if (DEBUG_TRANSPORT_ACTIONS) {
+        ALOGD("channel '%s' consumer ~ sendFinishedSignal: seq=%u, handled=%s",
+              mChannel->getName().c_str(), seq, toString(handled));
+    }
 
     if (!seq) {
         ALOGE("Attempted to send a finished signal with sequence number 0.");
@@ -1066,7 +1102,7 @@
     InputMessage msg;
     msg.header.type = InputMessage::Type::FINISHED;
     msg.body.finished.seq = seq;
-    msg.body.finished.handled = handled;
+    msg.body.finished.handled = handled ? 1 : 0;
     return mChannel->sendMessage(&msg);
 }
 
@@ -1114,6 +1150,10 @@
             msg->body.key.eventTime);
 }
 
+void InputConsumer::initializeFocusEvent(FocusEvent* event, const InputMessage* msg) {
+    event->initialize(msg->body.focus.hasFocus == 1, msg->body.focus.inTouchMode == 1);
+}
+
 void InputConsumer::initializeMotionEvent(MotionEvent* event, const InputMessage* msg) {
     uint32_t pointerCount = msg->body.motion.pointerCount;
     PointerProperties pointerProperties[pointerCount];
diff --git a/libs/input/tests/InputPublisherAndConsumer_test.cpp b/libs/input/tests/InputPublisherAndConsumer_test.cpp
index a362f32..2fc77e9 100644
--- a/libs/input/tests/InputPublisherAndConsumer_test.cpp
+++ b/libs/input/tests/InputPublisherAndConsumer_test.cpp
@@ -60,6 +60,7 @@
 
     void PublishAndConsumeKeyEvent();
     void PublishAndConsumeMotionEvent();
+    void PublishAndConsumeFocusEvent();
 };
 
 TEST_F(InputPublisherAndConsumerTest, GetChannel_ReturnsTheChannel) {
@@ -256,6 +257,43 @@
             << "publisher receiveFinishedSignal should have set handled to consumer's reply";
 }
 
+void InputPublisherAndConsumerTest::PublishAndConsumeFocusEvent() {
+    status_t status;
+
+    constexpr uint32_t seq = 15;
+    constexpr bool hasFocus = true;
+    constexpr bool inTouchMode = true;
+
+    status = mPublisher->publishFocusEvent(seq, hasFocus, inTouchMode);
+    ASSERT_EQ(OK, status) << "publisher publishKeyEvent should return OK";
+
+    uint32_t consumeSeq;
+    InputEvent* event;
+    status = mConsumer->consume(&mEventFactory, true /*consumeBatches*/, -1, &consumeSeq, &event);
+    ASSERT_EQ(OK, status) << "consumer consume should return OK";
+
+    ASSERT_TRUE(event != nullptr) << "consumer should have returned non-NULL event";
+    ASSERT_EQ(AINPUT_EVENT_TYPE_FOCUS, event->getType())
+            << "consumer should have returned a focus event";
+
+    FocusEvent* focusEvent = static_cast<FocusEvent*>(event);
+    EXPECT_EQ(seq, consumeSeq);
+    EXPECT_EQ(hasFocus, focusEvent->getHasFocus());
+    EXPECT_EQ(inTouchMode, focusEvent->getInTouchMode());
+
+    status = mConsumer->sendFinishedSignal(seq, true);
+    ASSERT_EQ(OK, status) << "consumer sendFinishedSignal should return OK";
+
+    uint32_t finishedSeq = 0;
+    bool handled = false;
+    status = mPublisher->receiveFinishedSignal(&finishedSeq, &handled);
+    ASSERT_EQ(OK, status) << "publisher receiveFinishedSignal should return OK";
+    ASSERT_EQ(seq, finishedSeq)
+            << "publisher receiveFinishedSignal should have returned the original sequence number";
+    ASSERT_TRUE(handled)
+            << "publisher receiveFinishedSignal should have set handled to consumer's reply";
+}
+
 TEST_F(InputPublisherAndConsumerTest, PublishKeyEvent_EndToEnd) {
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeKeyEvent());
 }
@@ -264,6 +302,10 @@
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeMotionEvent());
 }
 
+TEST_F(InputPublisherAndConsumerTest, PublishFocusEvent_EndToEnd) {
+    ASSERT_NO_FATAL_FAILURE(PublishAndConsumeFocusEvent());
+}
+
 TEST_F(InputPublisherAndConsumerTest, PublishMotionEvent_WhenSequenceNumberIsZero_ReturnsError) {
     status_t status;
     const size_t pointerCount = 1;
@@ -322,6 +364,7 @@
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeMotionEvent());
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeKeyEvent());
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeMotionEvent());
+    ASSERT_NO_FATAL_FAILURE(PublishAndConsumeFocusEvent());
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeMotionEvent());
     ASSERT_NO_FATAL_FAILURE(PublishAndConsumeKeyEvent());
 }
diff --git a/libs/input/tests/StructLayout_test.cpp b/libs/input/tests/StructLayout_test.cpp
index 8d8cf06..9ab0dba 100644
--- a/libs/input/tests/StructLayout_test.cpp
+++ b/libs/input/tests/StructLayout_test.cpp
@@ -69,8 +69,29 @@
   CHECK_OFFSET(InputMessage::Body::Motion, pointerCount, 88);
   CHECK_OFFSET(InputMessage::Body::Motion, pointers, 96);
 
+  CHECK_OFFSET(InputMessage::Body::Focus, seq, 0);
+  CHECK_OFFSET(InputMessage::Body::Focus, hasFocus, 4);
+  CHECK_OFFSET(InputMessage::Body::Focus, inTouchMode, 6);
+
   CHECK_OFFSET(InputMessage::Body::Finished, seq, 0);
   CHECK_OFFSET(InputMessage::Body::Finished, handled, 4);
 }
 
+void TestHeaderSize() {
+    static_assert(sizeof(InputMessage::Header) == 8);
+}
+
+/**
+ * We cannot use the Body::size() method here because it is not static for
+ * the Motion type, where "pointerCount" variable affects the size and can change at runtime.
+ */
+void TestBodySize() {
+    static_assert(sizeof(InputMessage::Body::Key) == 64);
+    static_assert(sizeof(InputMessage::Body::Motion) ==
+                  offsetof(InputMessage::Body::Motion, pointers) +
+                          sizeof(InputMessage::Body::Motion::Pointer) * MAX_POINTERS);
+    static_assert(sizeof(InputMessage::Body::Finished) == 8);
+    static_assert(sizeof(InputMessage::Body::Focus) == 8);
+}
+
 } // namespace android
diff --git a/libs/nativedisplay/AChoreographer.cpp b/libs/nativedisplay/AChoreographer.cpp
index 63e0734..05ff93e 100644
--- a/libs/nativedisplay/AChoreographer.cpp
+++ b/libs/nativedisplay/AChoreographer.cpp
@@ -22,7 +22,7 @@
 #include <thread>
 
 #include <android/choreographer.h>
-#include <androidfw/DisplayEventDispatcher.h>
+#include <gui/DisplayEventDispatcher.h>
 #include <gui/ISurfaceComposer.h>
 #include <gui/SurfaceComposerClient.h>
 #include <utils/Looper.h>
diff --git a/libs/nativedisplay/ADisplay.cpp b/libs/nativedisplay/ADisplay.cpp
index 6665635..6566538 100644
--- a/libs/nativedisplay/ADisplay.cpp
+++ b/libs/nativedisplay/ADisplay.cpp
@@ -18,6 +18,7 @@
 #include <gui/SurfaceComposerClient.h>
 #include <ui/DisplayInfo.h>
 #include <ui/GraphicTypes.h>
+#include <ui/PixelFormat.h>
 
 #include <algorithm>
 #include <optional>
@@ -82,6 +83,16 @@
     ADisplayType type;
 
     /**
+     * The preferred WCG dataspace
+     */
+    ADataSpace wcgDataspace;
+
+    /**
+     * The preferred WCG pixel format
+     */
+    AHardwareBuffer_Format wcgPixelFormat;
+
+    /**
      * Number of supported configs
      */
     size_t numConfigs;
@@ -151,6 +162,17 @@
 
     const std::optional<PhysicalDisplayId> internalId =
             SurfaceComposerClient::getInternalDisplayId();
+    ui::Dataspace defaultDataspace;
+    ui::PixelFormat defaultPixelFormat;
+    ui::Dataspace wcgDataspace;
+    ui::PixelFormat wcgPixelFormat;
+
+    const status_t status =
+            SurfaceComposerClient::getCompositionPreference(&defaultDataspace, &defaultPixelFormat,
+                                                            &wcgDataspace, &wcgPixelFormat);
+    if (status != NO_ERROR) {
+        return status;
+    }
 
     // Here we allocate all our required memory in one block. The layout is as
     // follows:
@@ -176,7 +198,12 @@
         const std::vector<DisplayConfigImpl>& configs = configsPerDisplay[i];
         memcpy(configData, configs.data(), sizeof(DisplayConfigImpl) * configs.size());
 
-        displayData[i] = DisplayImpl{id, type, configs.size(), configData};
+        displayData[i] = DisplayImpl{id,
+                                     type,
+                                     static_cast<ADataSpace>(wcgDataspace),
+                                     static_cast<AHardwareBuffer_Format>(wcgPixelFormat),
+                                     configs.size(),
+                                     configData};
         impls[i] = displayData + i;
         // Advance the configData pointer so that future configs are written to
         // the correct display.
@@ -210,6 +237,17 @@
     return reinterpret_cast<DisplayImpl*>(display)->type;
 }
 
+void ADisplay_getPreferredWideColorFormat(ADisplay* display, ADataSpace* outDataspace,
+                                          AHardwareBuffer_Format* outPixelFormat) {
+    CHECK_NOT_NULL(display);
+    CHECK_NOT_NULL(outDataspace);
+    CHECK_NOT_NULL(outPixelFormat);
+
+    DisplayImpl* impl = reinterpret_cast<DisplayImpl*>(display);
+    *outDataspace = impl->wcgDataspace;
+    *outPixelFormat = impl->wcgPixelFormat;
+}
+
 int ADisplay_getCurrentConfig(ADisplay* display, ADisplayConfig** outConfig) {
     CHECK_NOT_NULL(display);
 
diff --git a/libs/nativedisplay/Android.bp b/libs/nativedisplay/Android.bp
index 45b935a..7a497ea 100644
--- a/libs/nativedisplay/Android.bp
+++ b/libs/nativedisplay/Android.bp
@@ -46,9 +46,9 @@
     ],
 
     shared_libs: [
-        "libandroidfw",
         "libgui",
         "liblog",
+        "libnativewindow",
         "libui",
         "libutils",
     ],
diff --git a/libs/nativedisplay/include/apex/display.h b/libs/nativedisplay/include/apex/display.h
index 7af452a..9be401e 100644
--- a/libs/nativedisplay/include/apex/display.h
+++ b/libs/nativedisplay/include/apex/display.h
@@ -16,6 +16,8 @@
 
 #pragma once
 
+#include <android/data_space.h>
+#include <android/hardware_buffer.h>
 #include <inttypes.h>
 
 __BEGIN_DECLS
@@ -72,6 +74,12 @@
 ADisplayType ADisplay_getDisplayType(ADisplay* display);
 
 /**
+ * Queries the display's preferred WCG format
+ */
+void ADisplay_getPreferredWideColorFormat(ADisplay* display, ADataSpace* outDataspace,
+                                          AHardwareBuffer_Format* outPixelFormat);
+
+/**
  * Gets the current display configuration for the given display.
  *
  * Memory is *not* allocated for the caller. As such, the returned output
diff --git a/libs/renderengine/gl/GLESRenderEngine.cpp b/libs/renderengine/gl/GLESRenderEngine.cpp
index 15d025b..394d05a 100644
--- a/libs/renderengine/gl/GLESRenderEngine.cpp
+++ b/libs/renderengine/gl/GLESRenderEngine.cpp
@@ -983,6 +983,8 @@
 
     Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2, 2);
     for (auto layer : layers) {
+        mState.maxMasteringLuminance = layer.source.buffer.maxMasteringLuminance;
+        mState.maxContentLuminance = layer.source.buffer.maxContentLuminance;
         mState.projectionMatrix = projectionMatrix * layer.geometry.positionTransform;
 
         const FloatRect bounds = layer.geometry.boundaries;
@@ -998,7 +1000,6 @@
         bool usePremultipliedAlpha = true;
         bool disableTexture = true;
         bool isOpaque = false;
-
         if (layer.source.buffer.buffer != nullptr) {
             disableTexture = false;
             isOpaque = layer.source.buffer.isOpaque;
diff --git a/libs/renderengine/gl/Program.cpp b/libs/renderengine/gl/Program.cpp
index fe9d909..4eb5eb6 100644
--- a/libs/renderengine/gl/Program.cpp
+++ b/libs/renderengine/gl/Program.cpp
@@ -65,6 +65,8 @@
         mSamplerLoc = glGetUniformLocation(programId, "sampler");
         mColorLoc = glGetUniformLocation(programId, "color");
         mDisplayMaxLuminanceLoc = glGetUniformLocation(programId, "displayMaxLuminance");
+        mMaxMasteringLuminanceLoc = glGetUniformLocation(programId, "maxMasteringLuminance");
+        mMaxContentLuminanceLoc = glGetUniformLocation(programId, "maxContentLuminance");
         mInputTransformMatrixLoc = glGetUniformLocation(programId, "inputTransformMatrix");
         mOutputTransformMatrixLoc = glGetUniformLocation(programId, "outputTransformMatrix");
         mCornerRadiusLoc = glGetUniformLocation(programId, "cornerRadius");
@@ -138,6 +140,12 @@
     if (mDisplayMaxLuminanceLoc >= 0) {
         glUniform1f(mDisplayMaxLuminanceLoc, desc.displayMaxLuminance);
     }
+    if (mMaxMasteringLuminanceLoc >= 0) {
+        glUniform1f(mMaxMasteringLuminanceLoc, desc.maxMasteringLuminance);
+    }
+    if (mMaxContentLuminanceLoc >= 0) {
+        glUniform1f(mMaxContentLuminanceLoc, desc.maxContentLuminance);
+    }
     if (mCornerRadiusLoc >= 0) {
         glUniform1f(mCornerRadiusLoc, desc.cornerRadius);
     }
diff --git a/libs/renderengine/gl/Program.h b/libs/renderengine/gl/Program.h
index bc9cf08..c9beb68 100644
--- a/libs/renderengine/gl/Program.h
+++ b/libs/renderengine/gl/Program.h
@@ -90,6 +90,10 @@
 
     /* location of display luminance uniform */
     GLint mDisplayMaxLuminanceLoc;
+    /* location of max mastering luminance uniform */
+    GLint mMaxMasteringLuminanceLoc;
+    /* location of max content luminance uniform */
+    GLint mMaxContentLuminanceLoc;
 
     /* location of transform matrix */
     GLint mInputTransformMatrixLoc;
diff --git a/libs/renderengine/gl/ProgramCache.cpp b/libs/renderengine/gl/ProgramCache.cpp
index 494623e..e2757e1 100644
--- a/libs/renderengine/gl/ProgramCache.cpp
+++ b/libs/renderengine/gl/ProgramCache.cpp
@@ -339,9 +339,9 @@
                 default:
                     fs << R"__SHADER__(
                         highp vec3 ToneMap(highp vec3 color) {
-                            const float maxMasteringLumi = 1000.0;
-                            const float maxContentLumi = 1000.0;
-                            const float maxInLumi = min(maxMasteringLumi, maxContentLumi);
+                            float maxMasteringLumi = maxMasteringLuminance;
+                            float maxContentLumi = maxContentLuminance;
+                            float maxInLumi = min(maxMasteringLumi, maxContentLumi);
                             float maxOutLumi = displayMaxLuminance;
 
                             float nits = color.y;
@@ -633,9 +633,10 @@
     }
 
     if (needs.hasTransformMatrix() || (needs.getInputTF() != needs.getOutputTF())) {
-        // Currently, display maximum luminance is needed when doing tone mapping.
         if (needs.needsToneMapping()) {
             fs << "uniform float displayMaxLuminance;";
+            fs << "uniform float maxMasteringLuminance;";
+            fs << "uniform float maxContentLuminance;";
         }
 
         if (needs.hasInputTransformMatrix()) {
diff --git a/libs/renderengine/include/renderengine/LayerSettings.h b/libs/renderengine/include/renderengine/LayerSettings.h
index b8bf801..d890ccd 100644
--- a/libs/renderengine/include/renderengine/LayerSettings.h
+++ b/libs/renderengine/include/renderengine/LayerSettings.h
@@ -60,6 +60,8 @@
 
     // HDR color-space setting for Y410.
     bool isY410BT2020 = false;
+    float maxMasteringLuminance = 0.0;
+    float maxContentLuminance = 0.0;
 };
 
 // Metadata describing the layer geometry.
@@ -96,6 +98,33 @@
     half3 solidColor = half3(0.0f, 0.0f, 0.0f);
 };
 
+/*
+ * Contains the configuration for the shadows drawn by single layer. Shadow follows
+ * material design guidelines.
+ */
+struct ShadowSettings {
+    // Color to the ambient shadow. The alpha is premultiplied.
+    vec4 ambientColor = vec4();
+
+    // Color to the spot shadow. The alpha is premultiplied. The position of the spot shadow
+    // depends on the light position.
+    vec4 spotColor = vec4();
+
+    // Position of the light source used to cast the spot shadow.
+    vec3 lightPos = vec3();
+
+    // Radius of the spot light source. Smaller radius will have sharper edges,
+    // larger radius will have softer shadows
+    float lightRadius = 0.f;
+
+    // Length of the cast shadow. If length is <= 0.f no shadows will be drawn.
+    float length = 0.f;
+
+    // If true fill in the casting layer is translucent and the shadow needs to fill the bounds.
+    // Otherwise the shadow will only be drawn around the edges of the casting layer.
+    bool casterIsTranslucent = false;
+};
+
 // The settings that RenderEngine requires for correctly rendering a Layer.
 struct LayerSettings {
     // Geometry information
@@ -116,6 +145,8 @@
 
     // True if blending will be forced to be disabled.
     bool disableBlending = false;
+
+    ShadowSettings shadow;
 };
 
 } // namespace renderengine
diff --git a/libs/renderengine/include/renderengine/private/Description.h b/libs/renderengine/include/renderengine/private/Description.h
index bd2055f..bad64c2 100644
--- a/libs/renderengine/include/renderengine/private/Description.h
+++ b/libs/renderengine/include/renderengine/private/Description.h
@@ -71,6 +71,8 @@
     TransferFunction outputTransferFunction = TransferFunction::LINEAR;
 
     float displayMaxLuminance;
+    float maxMasteringLuminance;
+    float maxContentLuminance;
 
     // projection matrix
     mat4 projectionMatrix;
diff --git a/libs/ui/Android.bp b/libs/ui/Android.bp
index afa6a2b..3775e2b 100644
--- a/libs/ui/Android.bp
+++ b/libs/ui/Android.bp
@@ -69,6 +69,10 @@
     include_dirs: [
         "frameworks/native/include",
     ],
+    export_include_dirs: [
+        "include",
+        "include_private",
+    ],
 
     // Uncomment the following line to enable VALIDATE_REGIONS traces
     //defaults: ["libui-validate-regions-defaults"],
diff --git a/libs/ui/Gralloc2.cpp b/libs/ui/Gralloc2.cpp
index 5dc4530..0e23ddf 100644
--- a/libs/ui/Gralloc2.cpp
+++ b/libs/ui/Gralloc2.cpp
@@ -381,7 +381,8 @@
 
 status_t Gralloc2Allocator::allocate(uint32_t width, uint32_t height, PixelFormat format,
                                      uint32_t layerCount, uint64_t usage, uint32_t bufferCount,
-                                     uint32_t* outStride, buffer_handle_t* outBufferHandles) const {
+                                     uint32_t* outStride, buffer_handle_t* outBufferHandles,
+                                     bool importBuffers) const {
     IMapper::BufferDescriptorInfo descriptorInfo = {};
     descriptorInfo.width = width;
     descriptorInfo.height = height;
@@ -404,19 +405,33 @@
                                             return;
                                         }
 
-                                        // import buffers
-                                        for (uint32_t i = 0; i < bufferCount; i++) {
-                                            error = mMapper.importBuffer(tmpBuffers[i],
-                                                                         &outBufferHandles[i]);
-                                            if (error != NO_ERROR) {
-                                                for (uint32_t j = 0; j < i; j++) {
-                                                    mMapper.freeBuffer(outBufferHandles[j]);
-                                                    outBufferHandles[j] = nullptr;
+                                        if (importBuffers) {
+                                            for (uint32_t i = 0; i < bufferCount; i++) {
+                                                error = mMapper.importBuffer(tmpBuffers[i],
+                                                                             &outBufferHandles[i]);
+                                                if (error != NO_ERROR) {
+                                                    for (uint32_t j = 0; j < i; j++) {
+                                                        mMapper.freeBuffer(outBufferHandles[j]);
+                                                        outBufferHandles[j] = nullptr;
+                                                    }
+                                                    return;
                                                 }
-                                                return;
+                                            }
+                                        } else {
+                                            for (uint32_t i = 0; i < bufferCount; i++) {
+                                                outBufferHandles[i] = native_handle_clone(
+                                                        tmpBuffers[i].getNativeHandle());
+                                                if (!outBufferHandles[i]) {
+                                                    for (uint32_t j = 0; j < i; j++) {
+                                                        auto buffer = const_cast<native_handle_t*>(
+                                                                outBufferHandles[j]);
+                                                        native_handle_close(buffer);
+                                                        native_handle_delete(buffer);
+                                                        outBufferHandles[j] = nullptr;
+                                                    }
+                                                }
                                             }
                                         }
-
                                         *outStride = tmpStride;
                                     });
 
diff --git a/libs/ui/Gralloc3.cpp b/libs/ui/Gralloc3.cpp
index eb43765..e189281 100644
--- a/libs/ui/Gralloc3.cpp
+++ b/libs/ui/Gralloc3.cpp
@@ -362,7 +362,8 @@
 
 status_t Gralloc3Allocator::allocate(uint32_t width, uint32_t height, android::PixelFormat format,
                                      uint32_t layerCount, uint64_t usage, uint32_t bufferCount,
-                                     uint32_t* outStride, buffer_handle_t* outBufferHandles) const {
+                                     uint32_t* outStride, buffer_handle_t* outBufferHandles,
+                                     bool importBuffers) const {
     IMapper::BufferDescriptorInfo descriptorInfo;
     sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);
 
@@ -381,16 +382,31 @@
                                             return;
                                         }
 
-                                        // import buffers
-                                        for (uint32_t i = 0; i < bufferCount; i++) {
-                                            error = mMapper.importBuffer(tmpBuffers[i],
-                                                                         &outBufferHandles[i]);
-                                            if (error != NO_ERROR) {
-                                                for (uint32_t j = 0; j < i; j++) {
-                                                    mMapper.freeBuffer(outBufferHandles[j]);
-                                                    outBufferHandles[j] = nullptr;
+                                        if (importBuffers) {
+                                            for (uint32_t i = 0; i < bufferCount; i++) {
+                                                error = mMapper.importBuffer(tmpBuffers[i],
+                                                                             &outBufferHandles[i]);
+                                                if (error != NO_ERROR) {
+                                                    for (uint32_t j = 0; j < i; j++) {
+                                                        mMapper.freeBuffer(outBufferHandles[j]);
+                                                        outBufferHandles[j] = nullptr;
+                                                    }
+                                                    return;
                                                 }
-                                                return;
+                                            }
+                                        } else {
+                                            for (uint32_t i = 0; i < bufferCount; i++) {
+                                                outBufferHandles[i] = native_handle_clone(
+                                                        tmpBuffers[i].getNativeHandle());
+                                                if (!outBufferHandles[i]) {
+                                                    for (uint32_t j = 0; j < i; j++) {
+                                                        auto buffer = const_cast<native_handle_t*>(
+                                                                outBufferHandles[j]);
+                                                        native_handle_close(buffer);
+                                                        native_handle_delete(buffer);
+                                                        outBufferHandles[j] = nullptr;
+                                                    }
+                                                }
                                             }
                                         }
                                         *outStride = tmpStride;
diff --git a/libs/ui/Gralloc4.cpp b/libs/ui/Gralloc4.cpp
index dc105c0..afe26b7 100644
--- a/libs/ui/Gralloc4.cpp
+++ b/libs/ui/Gralloc4.cpp
@@ -32,7 +32,6 @@
 using android::hardware::graphics::mapper::V4_0::BufferDescriptor;
 using android::hardware::graphics::mapper::V4_0::Error;
 using android::hardware::graphics::mapper::V4_0::IMapper;
-using android::hardware::graphics::mapper::V4_0::YCbCrLayout;
 
 namespace android {
 
@@ -190,6 +189,16 @@
 status_t Gralloc4Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage, const Rect& bounds,
                               int acquireFence, void** outData, int32_t* outBytesPerPixel,
                               int32_t* outBytesPerStride) const {
+    // In Gralloc 4 we can get this info per plane. Clients should check per plane.
+    if (outBytesPerPixel) {
+        // TODO add support to check per plane
+        *outBytesPerPixel = -1;
+    }
+    if (outBytesPerStride) {
+        // TODO add support to check per plane
+        *outBytesPerStride = -1;
+    }
+
     auto buffer = const_cast<native_handle_t*>(bufferHandle);
 
     IMapper::Rect accessRegion = sGralloc4Rect(bounds);
@@ -205,19 +214,12 @@
 
     Error error;
     auto ret = mMapper->lock(buffer, usage, accessRegion, acquireFenceHandle,
-                             [&](const auto& tmpError, const auto& tmpData,
-                                 const auto& tmpBytesPerPixel, const auto& tmpBytesPerStride) {
+                             [&](const auto& tmpError, const auto& tmpData) {
                                  error = tmpError;
                                  if (error != Error::NONE) {
                                      return;
                                  }
                                  *outData = tmpData;
-                                 if (outBytesPerPixel) {
-                                     *outBytesPerPixel = tmpBytesPerPixel;
-                                 }
-                                 if (outBytesPerStride) {
-                                     *outBytesPerStride = tmpBytesPerStride;
-                                 }
                              });
 
     // we own acquireFence even on errors
@@ -232,48 +234,11 @@
     return static_cast<status_t>(error);
 }
 
-status_t Gralloc4Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage, const Rect& bounds,
-                              int acquireFence, android_ycbcr* ycbcr) const {
-    auto buffer = const_cast<native_handle_t*>(bufferHandle);
-
-    IMapper::Rect accessRegion = sGralloc4Rect(bounds);
-
-    // put acquireFence in a hidl_handle
-    hardware::hidl_handle acquireFenceHandle;
-    NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
-    if (acquireFence >= 0) {
-        auto h = native_handle_init(acquireFenceStorage, 1, 0);
-        h->data[0] = acquireFence;
-        acquireFenceHandle = h;
-    }
-
-    YCbCrLayout layout;
-    Error error;
-    auto ret = mMapper->lockYCbCr(buffer, usage, accessRegion, acquireFenceHandle,
-                                  [&](const auto& tmpError, const auto& tmpLayout) {
-                                      error = tmpError;
-                                      if (error != Error::NONE) {
-                                          return;
-                                      }
-
-                                      layout = tmpLayout;
-                                  });
-
-    if (error == Error::NONE) {
-        ycbcr->y = layout.y;
-        ycbcr->cb = layout.cb;
-        ycbcr->cr = layout.cr;
-        ycbcr->ystride = static_cast<size_t>(layout.yStride);
-        ycbcr->cstride = static_cast<size_t>(layout.cStride);
-        ycbcr->chroma_step = static_cast<size_t>(layout.chromaStep);
-    }
-
-    // we own acquireFence even on errors
-    if (acquireFence >= 0) {
-        close(acquireFence);
-    }
-
-    return static_cast<status_t>((ret.isOk()) ? error : kTransactionError);
+status_t Gralloc4Mapper::lock(buffer_handle_t /*bufferHandle*/, uint64_t /*usage*/,
+                              const Rect& /*bounds*/, int /*acquireFence*/,
+                              android_ycbcr* /*ycbcr*/) const {
+    // TODO add lockYCbCr support
+    return static_cast<status_t>(Error::UNSUPPORTED);
 }
 
 int Gralloc4Mapper::unlock(buffer_handle_t bufferHandle) const {
@@ -362,7 +327,8 @@
 
 status_t Gralloc4Allocator::allocate(uint32_t width, uint32_t height, android::PixelFormat format,
                                      uint32_t layerCount, uint64_t usage, uint32_t bufferCount,
-                                     uint32_t* outStride, buffer_handle_t* outBufferHandles) const {
+                                     uint32_t* outStride, buffer_handle_t* outBufferHandles,
+                                     bool importBuffers) const {
     IMapper::BufferDescriptorInfo descriptorInfo;
     sBufferDescriptorInfo(width, height, format, layerCount, usage, &descriptorInfo);
 
@@ -381,16 +347,31 @@
                                             return;
                                         }
 
-                                        // import buffers
-                                        for (uint32_t i = 0; i < bufferCount; i++) {
-                                            error = mMapper.importBuffer(tmpBuffers[i],
-                                                                         &outBufferHandles[i]);
-                                            if (error != NO_ERROR) {
-                                                for (uint32_t j = 0; j < i; j++) {
-                                                    mMapper.freeBuffer(outBufferHandles[j]);
-                                                    outBufferHandles[j] = nullptr;
+                                        if (importBuffers) {
+                                            for (uint32_t i = 0; i < bufferCount; i++) {
+                                                error = mMapper.importBuffer(tmpBuffers[i],
+                                                                             &outBufferHandles[i]);
+                                                if (error != NO_ERROR) {
+                                                    for (uint32_t j = 0; j < i; j++) {
+                                                        mMapper.freeBuffer(outBufferHandles[j]);
+                                                        outBufferHandles[j] = nullptr;
+                                                    }
+                                                    return;
                                                 }
-                                                return;
+                                            }
+                                        } else {
+                                            for (uint32_t i = 0; i < bufferCount; i++) {
+                                                outBufferHandles[i] = native_handle_clone(
+                                                        tmpBuffers[i].getNativeHandle());
+                                                if (!outBufferHandles[i]) {
+                                                    for (uint32_t j = 0; j < i; j++) {
+                                                        auto buffer = const_cast<native_handle_t*>(
+                                                                outBufferHandles[j]);
+                                                        native_handle_close(buffer);
+                                                        native_handle_delete(buffer);
+                                                        outBufferHandles[j] = nullptr;
+                                                    }
+                                                }
                                             }
                                         }
                                         *outStride = tmpStride;
diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index 579e68e..05fc590 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -27,7 +27,6 @@
 #include <ui/BufferHubBuffer.h>
 #endif // LIBUI_IN_VNDK
 
-#include <ui/Gralloc2.h>
 #include <ui/GraphicBufferAllocator.h>
 #include <ui/GraphicBufferMapper.h>
 #include <utils/Trace.h>
diff --git a/libs/ui/GraphicBufferAllocator.cpp b/libs/ui/GraphicBufferAllocator.cpp
index fcc2547..b2b9680 100644
--- a/libs/ui/GraphicBufferAllocator.cpp
+++ b/libs/ui/GraphicBufferAllocator.cpp
@@ -111,11 +111,10 @@
     ALOGD("%s", s.c_str());
 }
 
-status_t GraphicBufferAllocator::allocate(uint32_t width, uint32_t height,
-        PixelFormat format, uint32_t layerCount, uint64_t usage,
-        buffer_handle_t* handle, uint32_t* stride,
-        uint64_t /*graphicBufferId*/, std::string requestorName)
-{
+status_t GraphicBufferAllocator::allocateHelper(uint32_t width, uint32_t height, PixelFormat format,
+                                                uint32_t layerCount, uint64_t usage,
+                                                buffer_handle_t* handle, uint32_t* stride,
+                                                std::string requestorName, bool importBuffer) {
     ATRACE_CALL();
 
     // make sure to not allocate a N x 0 or 0 x N buffer, since this is
@@ -138,8 +137,18 @@
     // TODO(b/72323293, b/72703005): Remove these invalid bits from callers
     usage &= ~static_cast<uint64_t>((1 << 10) | (1 << 13));
 
-    status_t error =
-            mAllocator->allocate(width, height, format, layerCount, usage, 1, stride, handle);
+    status_t error = mAllocator->allocate(width, height, format, layerCount, usage, 1, stride,
+                                          handle, importBuffer);
+    if (error != NO_ERROR) {
+        ALOGE("Failed to allocate (%u x %u) layerCount %u format %d "
+              "usage %" PRIx64 ": %d",
+              width, height, layerCount, format, usage, error);
+        return NO_MEMORY;
+    }
+
+    if (!importBuffer) {
+        return NO_ERROR;
+    }
     size_t bufSize;
 
     // if stride has no meaning or is too large,
@@ -151,28 +160,44 @@
         bufSize = static_cast<size_t>((*stride)) * height * bpp;
     }
 
-    if (error == NO_ERROR) {
-        Mutex::Autolock _l(sLock);
-        KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
-        alloc_rec_t rec;
-        rec.width = width;
-        rec.height = height;
-        rec.stride = *stride;
-        rec.format = format;
-        rec.layerCount = layerCount;
-        rec.usage = usage;
-        rec.size = bufSize;
-        rec.requestorName = std::move(requestorName);
-        list.add(*handle, rec);
+    Mutex::Autolock _l(sLock);
+    KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
+    alloc_rec_t rec;
+    rec.width = width;
+    rec.height = height;
+    rec.stride = *stride;
+    rec.format = format;
+    rec.layerCount = layerCount;
+    rec.usage = usage;
+    rec.size = bufSize;
+    rec.requestorName = std::move(requestorName);
+    list.add(*handle, rec);
 
-        return NO_ERROR;
-    } else {
-        ALOGE("Failed to allocate (%u x %u) layerCount %u format %d "
-                "usage %" PRIx64 ": %d",
-                width, height, layerCount, format, usage,
-                error);
-        return NO_MEMORY;
-    }
+    return NO_ERROR;
+}
+status_t GraphicBufferAllocator::allocate(uint32_t width, uint32_t height, PixelFormat format,
+                                          uint32_t layerCount, uint64_t usage,
+                                          buffer_handle_t* handle, uint32_t* stride,
+                                          std::string requestorName) {
+    return allocateHelper(width, height, format, layerCount, usage, handle, stride, requestorName,
+                          true);
+}
+
+status_t GraphicBufferAllocator::allocateRawHandle(uint32_t width, uint32_t height,
+                                                   PixelFormat format, uint32_t layerCount,
+                                                   uint64_t usage, buffer_handle_t* handle,
+                                                   uint32_t* stride, std::string requestorName) {
+    return allocateHelper(width, height, format, layerCount, usage, handle, stride, requestorName,
+                          false);
+}
+
+// DEPRECATED
+status_t GraphicBufferAllocator::allocate(uint32_t width, uint32_t height, PixelFormat format,
+                                          uint32_t layerCount, uint64_t usage,
+                                          buffer_handle_t* handle, uint32_t* stride,
+                                          uint64_t /*graphicBufferId*/, std::string requestorName) {
+    return allocateHelper(width, height, format, layerCount, usage, handle, stride, requestorName,
+                          true);
 }
 
 status_t GraphicBufferAllocator::free(buffer_handle_t handle)
diff --git a/libs/ui/Region.cpp b/libs/ui/Region.cpp
index 1222cd6..83ebeca 100644
--- a/libs/ui/Region.cpp
+++ b/libs/ui/Region.cpp
@@ -23,11 +23,10 @@
 
 #include <utils/Log.h>
 
+#include <ui/Point.h>
 #include <ui/Rect.h>
 #include <ui/Region.h>
-#include <ui/Point.h>
-
-#include <private/ui/RegionHelper.h>
+#include <ui/RegionHelper.h>
 
 // ----------------------------------------------------------------------------
 
diff --git a/libs/ui/Transform.cpp b/libs/ui/Transform.cpp
index 28c3f7b..85abb38 100644
--- a/libs/ui/Transform.cpp
+++ b/libs/ui/Transform.cpp
@@ -33,8 +33,8 @@
     : mMatrix(other.mMatrix), mType(other.mType) {
 }
 
-Transform::Transform(uint32_t orientation) {
-    set(orientation, 0, 0);
+Transform::Transform(uint32_t orientation, int w, int h) {
+    set(orientation, w, h);
 }
 
 Transform::~Transform() = default;
diff --git a/libs/ui/include/ui/Gralloc.h b/libs/ui/include/ui/Gralloc.h
index 6cc23f0..c28f7a5 100644
--- a/libs/ui/include/ui/Gralloc.h
+++ b/libs/ui/include/ui/Gralloc.h
@@ -94,7 +94,8 @@
      */
     virtual status_t allocate(uint32_t width, uint32_t height, PixelFormat format,
                               uint32_t layerCount, uint64_t usage, uint32_t bufferCount,
-                              uint32_t* outStride, buffer_handle_t* outBufferHandles) const = 0;
+                              uint32_t* outStride, buffer_handle_t* outBufferHandles,
+                              bool importBuffers = true) const = 0;
 };
 
 } // namespace android
diff --git a/libs/ui/include/ui/Gralloc2.h b/libs/ui/include/ui/Gralloc2.h
index 948f597..12c772a 100644
--- a/libs/ui/include/ui/Gralloc2.h
+++ b/libs/ui/include/ui/Gralloc2.h
@@ -85,7 +85,7 @@
 
     status_t allocate(uint32_t width, uint32_t height, PixelFormat format, uint32_t layerCount,
                       uint64_t usage, uint32_t bufferCount, uint32_t* outStride,
-                      buffer_handle_t* outBufferHandles) const override;
+                      buffer_handle_t* outBufferHandles, bool importBuffers = true) const override;
 
 private:
     const Gralloc2Mapper& mMapper;
diff --git a/libs/ui/include/ui/Gralloc3.h b/libs/ui/include/ui/Gralloc3.h
index 0965f52..bfbc2aa 100644
--- a/libs/ui/include/ui/Gralloc3.h
+++ b/libs/ui/include/ui/Gralloc3.h
@@ -83,7 +83,7 @@
 
     status_t allocate(uint32_t width, uint32_t height, PixelFormat format, uint32_t layerCount,
                       uint64_t usage, uint32_t bufferCount, uint32_t* outStride,
-                      buffer_handle_t* outBufferHandles) const override;
+                      buffer_handle_t* outBufferHandles, bool importBuffers = true) const override;
 
 private:
     const Gralloc3Mapper& mMapper;
diff --git a/libs/ui/include/ui/Gralloc4.h b/libs/ui/include/ui/Gralloc4.h
index 14b65bc..60115f9 100644
--- a/libs/ui/include/ui/Gralloc4.h
+++ b/libs/ui/include/ui/Gralloc4.h
@@ -83,7 +83,7 @@
 
     status_t allocate(uint32_t width, uint32_t height, PixelFormat format, uint32_t layerCount,
                       uint64_t usage, uint32_t bufferCount, uint32_t* outStride,
-                      buffer_handle_t* outBufferHandles) const override;
+                      buffer_handle_t* outBufferHandles, bool importBuffers = true) const override;
 
 private:
     const Gralloc4Mapper& mMapper;
diff --git a/libs/ui/include/ui/GraphicBufferAllocator.h b/libs/ui/include/ui/GraphicBufferAllocator.h
index 324d9e1..34a5b17 100644
--- a/libs/ui/include/ui/GraphicBufferAllocator.h
+++ b/libs/ui/include/ui/GraphicBufferAllocator.h
@@ -42,6 +42,29 @@
 public:
     static inline GraphicBufferAllocator& get() { return getInstance(); }
 
+    /**
+     * Allocates and imports a gralloc buffer.
+     *
+     * The handle must be freed with GraphicBufferAllocator::free() when no longer needed.
+     */
+    status_t allocate(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
+                      uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
+                      std::string requestorName);
+
+    /**
+     * Allocates and does NOT import a gralloc buffer. Buffers cannot be used until they have
+     * been imported. This function is for advanced use cases only.
+     *
+     * The raw native handle must be freed by calling native_handle_close() followed by
+     * native_handle_delete().
+     */
+    status_t allocateRawHandle(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
+                               uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
+                               std::string requestorName);
+
+    /**
+     * DEPRECATED: GraphicBufferAllocator does not use the graphicBufferId.
+     */
     status_t allocate(uint32_t w, uint32_t h, PixelFormat format,
             uint32_t layerCount, uint64_t usage,
             buffer_handle_t* handle, uint32_t* stride, uint64_t graphicBufferId,
@@ -66,6 +89,10 @@
         std::string requestorName;
     };
 
+    status_t allocateHelper(uint32_t w, uint32_t h, PixelFormat format, uint32_t layerCount,
+                            uint64_t usage, buffer_handle_t* handle, uint32_t* stride,
+                            std::string requestorName, bool importBuffer);
+
     static Mutex sLock;
     static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList;
 
diff --git a/libs/ui/include/ui/GraphicBufferMapper.h b/libs/ui/include/ui/GraphicBufferMapper.h
index c401a48..83fb144 100644
--- a/libs/ui/include/ui/GraphicBufferMapper.h
+++ b/libs/ui/include/ui/GraphicBufferMapper.h
@@ -23,6 +23,7 @@
 #include <memory>
 
 #include <ui/PixelFormat.h>
+#include <ui/Rect.h>
 #include <utils/Singleton.h>
 
 
@@ -36,7 +37,6 @@
 // ---------------------------------------------------------------------------
 
 class GrallocMapper;
-class Rect;
 
 class GraphicBufferMapper : public Singleton<GraphicBufferMapper>
 {
diff --git a/libs/ui/include/ui/Transform.h b/libs/ui/include/ui/Transform.h
index f29a370..fab2d9e 100644
--- a/libs/ui/include/ui/Transform.h
+++ b/libs/ui/include/ui/Transform.h
@@ -38,7 +38,7 @@
 public:
     Transform();
     Transform(const Transform&  other);
-    explicit Transform(uint32_t orientation);
+    explicit Transform(uint32_t orientation, int w = 0, int h = 0);
     ~Transform();
 
     enum orientation_flags {
diff --git a/include/private/ui/RegionHelper.h b/libs/ui/include_private/ui/RegionHelper.h
similarity index 70%
rename from include/private/ui/RegionHelper.h
rename to libs/ui/include_private/ui/RegionHelper.h
index 0ec3e94..92cfba8 100644
--- a/include/private/ui/RegionHelper.h
+++ b/libs/ui/include_private/ui/RegionHelper.h
@@ -17,18 +17,17 @@
 #ifndef ANDROID_UI_PRIVATE_REGION_HELPER_H
 #define ANDROID_UI_PRIVATE_REGION_HELPER_H
 
-#include <limits>
 #include <stdint.h>
 #include <sys/types.h>
+#include <limits>
 
 #include <limits>
 
 namespace android {
 // ----------------------------------------------------------------------------
 
-template<typename RECT>
-class region_operator
-{
+template <typename RECT>
+class region_operator {
 public:
     typedef typename RECT::value_type TYPE;
     static const TYPE max_value = std::numeric_limits<TYPE>::max();
@@ -40,39 +39,32 @@
      *    their corresponding value with the above formulae and use
      *    it when instantiating a region_operator.
      */
-    static const uint32_t LHS = 0x5;  // 0b101
-    static const uint32_t RHS = 0x6;  // 0b110
-    enum {
-        op_nand = LHS & ~RHS,
-        op_and  = LHS &  RHS,
-        op_or   = LHS |  RHS,
-        op_xor  = LHS ^  RHS
-    };
+    static const uint32_t LHS = 0x5; // 0b101
+    static const uint32_t RHS = 0x6; // 0b110
+    enum { op_nand = LHS & ~RHS, op_and = LHS & RHS, op_or = LHS | RHS, op_xor = LHS ^ RHS };
 
     struct region {
         RECT const* rects;
         size_t count;
         TYPE dx;
         TYPE dy;
-        inline region(const region& rhs) 
-            : rects(rhs.rects), count(rhs.count), dx(rhs.dx), dy(rhs.dy) { }
-        inline region(RECT const* _r, size_t _c)
-            : rects(_r), count(_c), dx(), dy() { }
+        inline region(const region& rhs)
+              : rects(rhs.rects), count(rhs.count), dx(rhs.dx), dy(rhs.dy) {}
+        inline region(RECT const* _r, size_t _c) : rects(_r), count(_c), dx(), dy() {}
         inline region(RECT const* _r, size_t _c, TYPE _dx, TYPE _dy)
-            : rects(_r), count(_c), dx(_dx), dy(_dy) { }
+              : rects(_r), count(_c), dx(_dx), dy(_dy) {}
     };
 
     class region_rasterizer {
         friend class region_operator;
         virtual void operator()(const RECT& rect) = 0;
+
     public:
-        virtual ~region_rasterizer() { }
+        virtual ~region_rasterizer() {}
     };
-    
+
     inline region_operator(uint32_t op, const region& lhs, const region& rhs)
-        : op_mask(op), spanner(lhs, rhs) 
-    {
-    }
+          : op_mask(op), spanner(lhs, rhs) {}
 
     void operator()(region_rasterizer& rasterizer) {
         RECT current(Rect::EMPTY_RECT);
@@ -83,31 +75,26 @@
             do {
                 int inner_inside = spannerInner.next(current.left, current.right);
                 if ((op_mask >> inner_inside) & 1) {
-                    if (current.left < current.right && 
-                            current.top < current.bottom) {
+                    if (current.left < current.right && current.top < current.bottom) {
                         rasterizer(current);
                     }
                 }
-            } while(!spannerInner.isDone());
-        } while(!spanner.isDone());
+            } while (!spannerInner.isDone());
+        } while (!spanner.isDone());
     }
 
-private:    
+private:
     uint32_t op_mask;
 
-    class SpannerBase
-    {
+    class SpannerBase {
     public:
         SpannerBase()
-            : lhs_head(max_value), lhs_tail(max_value),
-              rhs_head(max_value), rhs_tail(max_value) {
-        }
+              : lhs_head(max_value),
+                lhs_tail(max_value),
+                rhs_head(max_value),
+                rhs_tail(max_value) {}
 
-        enum {
-            lhs_before_rhs   = 0,
-            lhs_after_rhs    = 1,
-            lhs_coincide_rhs = 2
-        };
+        enum { lhs_before_rhs = 0, lhs_after_rhs = 1, lhs_coincide_rhs = 2 };
 
     protected:
         TYPE lhs_head;
@@ -115,9 +102,7 @@
         TYPE rhs_head;
         TYPE rhs_tail;
 
-        inline int next(TYPE& head, TYPE& tail,
-                bool& more_lhs, bool& more_rhs) 
-        {
+        inline int next(TYPE& head, TYPE& tail, bool& more_lhs, bool& more_rhs) {
             int inside;
             more_lhs = false;
             more_rhs = false;
@@ -157,32 +142,26 @@
         }
     };
 
-    class Spanner : protected SpannerBase 
-    {
+    class Spanner : protected SpannerBase {
         friend class region_operator;
         region lhs;
         region rhs;
 
     public:
-        inline Spanner(const region& _lhs, const region& _rhs)
-        : lhs(_lhs), rhs(_rhs)
-        {
+        inline Spanner(const region& _lhs, const region& _rhs) : lhs(_lhs), rhs(_rhs) {
             if (lhs.count) {
-                SpannerBase::lhs_head = lhs.rects->top      + lhs.dy;
-                SpannerBase::lhs_tail = lhs.rects->bottom   + lhs.dy;
+                SpannerBase::lhs_head = lhs.rects->top + lhs.dy;
+                SpannerBase::lhs_tail = lhs.rects->bottom + lhs.dy;
             }
             if (rhs.count) {
-                SpannerBase::rhs_head = rhs.rects->top      + rhs.dy;
-                SpannerBase::rhs_tail = rhs.rects->bottom   + rhs.dy;
+                SpannerBase::rhs_head = rhs.rects->top + rhs.dy;
+                SpannerBase::rhs_tail = rhs.rects->bottom + rhs.dy;
             }
         }
 
-        inline bool isDone() const {
-            return !rhs.count && !lhs.count;
-        }
+        inline bool isDone() const { return !rhs.count && !lhs.count; }
 
-        inline int next(TYPE& top, TYPE& bottom) 
-        {
+        inline int next(TYPE& top, TYPE& bottom) {
             bool more_lhs = false;
             bool more_rhs = false;
             int inside = SpannerBase::next(top, bottom, more_lhs, more_rhs);
@@ -196,22 +175,21 @@
         }
 
     private:
-        static inline 
-        void advance(region& reg, TYPE& aTop, TYPE& aBottom) {
+        static inline void advance(region& reg, TYPE& aTop, TYPE& aBottom) {
             // got to next span
             size_t count = reg.count;
-            RECT const * rects = reg.rects;
-            RECT const * const end = rects + count;
+            RECT const* rects = reg.rects;
+            RECT const* const end = rects + count;
             const int top = rects->top;
             while (rects != end && rects->top == top) {
                 rects++;
                 count--;
             }
             if (rects != end) {
-                aTop    = rects->top    + reg.dy;
+                aTop = rects->top + reg.dy;
                 aBottom = rects->bottom + reg.dy;
             } else {
-                aTop    = max_value;
+                aTop = max_value;
                 aBottom = max_value;
             }
             reg.rects = rects;
@@ -219,21 +197,17 @@
         }
     };
 
-    class SpannerInner : protected SpannerBase 
-    {
+    class SpannerInner : protected SpannerBase {
         region lhs;
         region rhs;
-        
+
     public:
-        inline SpannerInner(const region& _lhs, const region& _rhs)
-            : lhs(_lhs), rhs(_rhs)
-        {
-        }
+        inline SpannerInner(const region& _lhs, const region& _rhs) : lhs(_lhs), rhs(_rhs) {}
 
         inline void prepare(int inside) {
             if (inside == SpannerBase::lhs_before_rhs) {
                 if (lhs.count) {
-                    SpannerBase::lhs_head = lhs.rects->left  + lhs.dx;
+                    SpannerBase::lhs_head = lhs.rects->left + lhs.dx;
                     SpannerBase::lhs_tail = lhs.rects->right + lhs.dx;
                 }
                 SpannerBase::rhs_head = max_value;
@@ -242,28 +216,26 @@
                 SpannerBase::lhs_head = max_value;
                 SpannerBase::lhs_tail = max_value;
                 if (rhs.count) {
-                    SpannerBase::rhs_head = rhs.rects->left  + rhs.dx;
+                    SpannerBase::rhs_head = rhs.rects->left + rhs.dx;
                     SpannerBase::rhs_tail = rhs.rects->right + rhs.dx;
                 }
             } else {
                 if (lhs.count) {
-                    SpannerBase::lhs_head = lhs.rects->left  + lhs.dx;
+                    SpannerBase::lhs_head = lhs.rects->left + lhs.dx;
                     SpannerBase::lhs_tail = lhs.rects->right + lhs.dx;
                 }
                 if (rhs.count) {
-                    SpannerBase::rhs_head = rhs.rects->left  + rhs.dx;
+                    SpannerBase::rhs_head = rhs.rects->left + rhs.dx;
                     SpannerBase::rhs_tail = rhs.rects->right + rhs.dx;
                 }
             }
         }
 
         inline bool isDone() const {
-            return SpannerBase::lhs_head == max_value && 
-                   SpannerBase::rhs_head == max_value;
+            return SpannerBase::lhs_head == max_value && SpannerBase::rhs_head == max_value;
         }
 
-        inline int next(TYPE& left, TYPE& right) 
-        {
+        inline int next(TYPE& left, TYPE& right) {
             bool more_lhs = false;
             bool more_rhs = false;
             int inside = SpannerBase::next(left, right, more_lhs, more_rhs);
@@ -277,17 +249,16 @@
         }
 
     private:
-        static inline 
-        void advance(region& reg, TYPE& left, TYPE& right) {
+        static inline void advance(region& reg, TYPE& left, TYPE& right) {
             if (reg.rects && reg.count) {
                 const int cur_span_top = reg.rects->top;
                 reg.rects++;
                 reg.count--;
                 if (!reg.count || reg.rects->top != cur_span_top) {
-                    left  = max_value;
+                    left = max_value;
                     right = max_value;
                 } else {
-                    left  = reg.rects->left  + reg.dx;
+                    left = reg.rects->left + reg.dx;
                     right = reg.rects->right + reg.dx;
                 }
             }
@@ -298,6 +269,6 @@
 };
 
 // ----------------------------------------------------------------------------
-};
+}; // namespace android
 
 #endif /* ANDROID_UI_PRIVATE_REGION_HELPER_H */
diff --git a/libs/ui/tests/mock/MockGrallocAllocator.h b/libs/ui/tests/mock/MockGrallocAllocator.h
index 22c80a4..7660e9f 100644
--- a/libs/ui/tests/mock/MockGrallocAllocator.h
+++ b/libs/ui/tests/mock/MockGrallocAllocator.h
@@ -36,7 +36,7 @@
     MOCK_METHOD(status_t, allocate,
                 (uint32_t width, uint32_t height, PixelFormat format, uint32_t layerCount,
                  uint64_t usage, uint32_t bufferCount, uint32_t* outStride,
-                 buffer_handle_t* outBufferHandles),
+                 buffer_handle_t* outBufferHandles, bool less),
                 (const, override));
 };
 
diff --git a/libs/vr/libvrflinger/hardware_composer.cpp b/libs/vr/libvrflinger/hardware_composer.cpp
index 67607af..188ac6b 100644
--- a/libs/vr/libvrflinger/hardware_composer.cpp
+++ b/libs/vr/libvrflinger/hardware_composer.cpp
@@ -1201,6 +1201,20 @@
   return Void();
 }
 
+Return<void> HardwareComposer::ComposerCallback::onVsync_2_4(
+    Hwc2::Display /*display*/, int64_t /*timestamp*/,
+    Hwc2::VsyncPeriodNanos /*vsyncPeriodNanos*/) {
+  LOG_ALWAYS_FATAL("Unexpected onVsync_2_4 callback");
+  return Void();
+}
+
+Return<void> HardwareComposer::ComposerCallback::onVsyncPeriodTimingChanged(
+    Hwc2::Display /*display*/,
+    const Hwc2::VsyncPeriodChangeTimeline& /*updatedTimeline*/) {
+  LOG_ALWAYS_FATAL("Unexpected onVsyncPeriodTimingChanged callback");
+  return Void();
+}
+
 void HardwareComposer::ComposerCallback::SetVsyncService(
     const sp<VsyncService>& vsync_service) {
   std::lock_guard<std::mutex> lock(mutex_);
diff --git a/libs/vr/libvrflinger/hardware_composer.h b/libs/vr/libvrflinger/hardware_composer.h
index 989ce35..8698814 100644
--- a/libs/vr/libvrflinger/hardware_composer.h
+++ b/libs/vr/libvrflinger/hardware_composer.h
@@ -375,6 +375,12 @@
     hardware::Return<void> onRefresh(Hwc2::Display display) override;
     hardware::Return<void> onVsync(Hwc2::Display display,
                                    int64_t timestamp) override;
+    hardware::Return<void> onVsync_2_4(
+        Hwc2::Display display, int64_t timestamp,
+        Hwc2::VsyncPeriodNanos vsyncPeriodNanos) override;
+    hardware::Return<void> onVsyncPeriodTimingChanged(
+        Hwc2::Display display,
+        const Hwc2::VsyncPeriodChangeTimeline& updatedTimeline) override;
 
     bool GotFirstHotplug() { return got_first_hotplug_; }
     void SetVsyncService(const sp<VsyncService>& vsync_service);
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index 48a68af..e255b9d 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -161,6 +161,10 @@
     ],
     ldflags: ["-Wl,--exclude-libs=ALL,--Bsymbolic-functions"],
     export_include_dirs: ["EGL/include"],
+    stubs: {
+        symbol_file: "libEGL.map.txt",
+        versions: ["29"],
+    },
 }
 
 cc_test {
diff --git a/services/gpuservice/Android.bp b/services/gpuservice/Android.bp
index 7b8e0f8..baba64f 100644
--- a/services/gpuservice/Android.bp
+++ b/services/gpuservice/Android.bp
@@ -1,20 +1,6 @@
-filegroup {
-    name: "gpuservice_sources",
-    srcs: [
-        "GpuService.cpp",
-        "gpustats/GpuStats.cpp"
-    ],
-}
-
-filegroup {
-    name: "gpuservice_binary_sources",
-    srcs: ["main_gpuservice.cpp"],
-}
-
 cc_defaults {
     name: "gpuservice_defaults",
     cflags: [
-        "-DLOG_TAG=\"GpuService\"",
         "-Wall",
         "-Werror",
         "-Wformat",
@@ -22,12 +8,13 @@
         "-Wunused",
         "-Wunreachable-code",
     ],
-    srcs: [
-        ":gpuservice_sources",
-    ],
-    include_dirs: [
-        "frameworks/native/vulkan/vkjson",
-        "frameworks/native/vulkan/include",
+}
+
+cc_defaults {
+    name: "libgpuservice_defaults",
+    defaults: ["gpuservice_defaults"],
+    cflags: [
+        "-DLOG_TAG=\"GpuService\"",
     ],
     shared_libs: [
         "libbase",
@@ -36,17 +23,22 @@
         "libgraphicsenv",
         "liblog",
         "libutils",
-        "libvulkan",
+        "libvkjson",
     ],
     static_libs: [
         "libserviceutils",
-        "libvkjson",
+    ],
+    export_static_lib_headers: [
+        "libserviceutils",
+    ],
+    export_shared_lib_headers: [
+        "libgraphicsenv",
     ],
 }
 
 cc_defaults {
-    name: "gpuservice_production_defaults",
-    defaults: ["gpuservice_defaults"],
+    name: "libgpuservice_production_defaults",
+    defaults: ["libgpuservice_defaults"],
     cflags: [
         "-fvisibility=hidden",
         "-fwhole-program-vtables", // requires ThinLTO
@@ -56,8 +48,24 @@
     },
 }
 
+filegroup {
+    name: "libgpuservice_sources",
+    srcs: [
+        "GpuService.cpp",
+        "gpustats/GpuStats.cpp"
+    ],
+}
+
+cc_library_shared {
+    name: "libgpuservice",
+    defaults: ["libgpuservice_production_defaults"],
+    srcs: [
+        ":libgpuservice_sources",
+    ],
+}
+
 cc_defaults {
-    name: "gpuservice_binary",
+    name: "libgpuservice_binary",
     defaults: ["gpuservice_defaults"],
     shared_libs: [
         "libbinder",
@@ -68,9 +76,17 @@
     ldflags: ["-Wl,--export-dynamic"],
 }
 
+filegroup {
+    name: "gpuservice_binary_sources",
+    srcs: ["main_gpuservice.cpp"],
+}
+
 cc_binary {
     name: "gpuservice",
-    defaults: ["gpuservice_binary"],
+    defaults: ["libgpuservice_binary"],
     init_rc: ["gpuservice.rc"],
     srcs: [":gpuservice_binary_sources"],
+    shared_libs: [
+        "libgpuservice",
+    ],
 }
diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index e7640dd..1043390 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -46,7 +46,6 @@
 }
 
 void InputManager::initialize() {
-    mReaderThread = new InputReaderThread(mReader);
     mDispatcherThread = new InputDispatcherThread(mDispatcher);
 }
 
@@ -57,9 +56,9 @@
         return result;
     }
 
-    result = mReaderThread->run("InputReader", PRIORITY_URGENT_DISPLAY);
+    result = mReader->start();
     if (result) {
-        ALOGE("Could not start InputReader thread due to error %d.", result);
+        ALOGE("Could not start InputReader due to error %d.", result);
 
         mDispatcherThread->requestExit();
         return result;
@@ -69,9 +68,9 @@
 }
 
 status_t InputManager::stop() {
-    status_t result = mReaderThread->requestExitAndWait();
+    status_t result = mReader->stop();
     if (result) {
-        ALOGW("Could not stop InputReader thread due to error %d.", result);
+        ALOGW("Could not stop InputReader due to error %d.", result);
     }
 
     result = mDispatcherThread->requestExitAndWait();
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index 40f66d8..2a7ed0f 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -43,15 +43,15 @@
 /*
  * The input manager is the core of the system event processing.
  *
- * The input manager uses two threads.
+ * The input manager has two components.
  *
- * 1. The InputReaderThread (called "InputReader") reads and preprocesses raw input events,
- *    applies policy, and posts messages to a queue managed by the DispatcherThread.
+ * 1. The InputReader class starts a thread that reads and preprocesses raw input events, applies
+ *    policy, and posts messages to a queue managed by the InputDispatcherThread.
  * 2. The InputDispatcherThread (called "InputDispatcher") thread waits for new events on the
  *    queue and asynchronously dispatches them to applications.
  *
- * By design, the InputReaderThread class and InputDispatcherThread class do not share any
- * internal state.  Moreover, all communication is done one way from the InputReaderThread
+ * By design, the InputReader class and InputDispatcherThread class do not share any
+ * internal state.  Moreover, all communication is done one way from the InputReader
  * into the InputDispatcherThread and never the reverse.  Both classes may interact with the
  * InputDispatchPolicy, however.
  *
@@ -102,7 +102,6 @@
 
 private:
     sp<InputReaderInterface> mReader;
-    sp<InputReaderThread> mReaderThread;
 
     sp<InputClassifierInterface> mClassifier;
 
diff --git a/services/inputflinger/InputReaderBase.cpp b/services/inputflinger/InputReaderBase.cpp
index 0422d83..2d6f2c1 100644
--- a/services/inputflinger/InputReaderBase.cpp
+++ b/services/inputflinger/InputReaderBase.cpp
@@ -33,20 +33,6 @@
 
 namespace android {
 
-// --- InputReaderThread ---
-
-InputReaderThread::InputReaderThread(const sp<InputReaderInterface>& reader) :
-        Thread(/*canCallJava*/ true), mReader(reader) {
-}
-
-InputReaderThread::~InputReaderThread() {
-}
-
-bool InputReaderThread::threadLoop() {
-    mReader->loopOnce();
-    return true;
-}
-
 // --- InputReaderConfiguration ---
 
 std::string InputReaderConfiguration::changesToString(uint32_t changes) {
diff --git a/services/inputflinger/dispatcher/Entry.cpp b/services/inputflinger/dispatcher/Entry.cpp
index 930c7c7..e925f5b 100644
--- a/services/inputflinger/dispatcher/Entry.cpp
+++ b/services/inputflinger/dispatcher/Entry.cpp
@@ -60,7 +60,7 @@
 
 // --- EventEntry ---
 
-EventEntry::EventEntry(uint32_t sequenceNum, int32_t type, nsecs_t eventTime, uint32_t policyFlags)
+EventEntry::EventEntry(uint32_t sequenceNum, Type type, nsecs_t eventTime, uint32_t policyFlags)
       : sequenceNum(sequenceNum),
         refCount(1),
         type(type),
@@ -92,7 +92,7 @@
 // --- ConfigurationChangedEntry ---
 
 ConfigurationChangedEntry::ConfigurationChangedEntry(uint32_t sequenceNum, nsecs_t eventTime)
-      : EventEntry(sequenceNum, TYPE_CONFIGURATION_CHANGED, eventTime, 0) {}
+      : EventEntry(sequenceNum, Type::CONFIGURATION_CHANGED, eventTime, 0) {}
 
 ConfigurationChangedEntry::~ConfigurationChangedEntry() {}
 
@@ -103,7 +103,7 @@
 // --- DeviceResetEntry ---
 
 DeviceResetEntry::DeviceResetEntry(uint32_t sequenceNum, nsecs_t eventTime, int32_t deviceId)
-      : EventEntry(sequenceNum, TYPE_DEVICE_RESET, eventTime, 0), deviceId(deviceId) {}
+      : EventEntry(sequenceNum, Type::DEVICE_RESET, eventTime, 0), deviceId(deviceId) {}
 
 DeviceResetEntry::~DeviceResetEntry() {}
 
@@ -117,7 +117,7 @@
                    int32_t displayId, uint32_t policyFlags, int32_t action, int32_t flags,
                    int32_t keyCode, int32_t scanCode, int32_t metaState, int32_t repeatCount,
                    nsecs_t downTime)
-      : EventEntry(sequenceNum, TYPE_KEY, eventTime, policyFlags),
+      : EventEntry(sequenceNum, Type::KEY, eventTime, policyFlags),
         deviceId(deviceId),
         source(source),
         displayId(displayId),
@@ -165,7 +165,7 @@
                          float xCursorPosition, float yCursorPosition, nsecs_t downTime,
                          uint32_t pointerCount, const PointerProperties* pointerProperties,
                          const PointerCoords* pointerCoords, float xOffset, float yOffset)
-      : EventEntry(sequenceNum, TYPE_MOTION, eventTime, policyFlags),
+      : EventEntry(sequenceNum, Type::MOTION, eventTime, policyFlags),
         eventTime(eventTime),
         deviceId(deviceId),
         source(source),
diff --git a/services/inputflinger/dispatcher/Entry.h b/services/inputflinger/dispatcher/Entry.h
index 28c2799..9dcaadc 100644
--- a/services/inputflinger/dispatcher/Entry.h
+++ b/services/inputflinger/dispatcher/Entry.h
@@ -33,11 +33,24 @@
 constexpr uint32_t SYNTHESIZED_EVENT_SEQUENCE_NUM = 0;
 
 struct EventEntry {
-    enum { TYPE_CONFIGURATION_CHANGED, TYPE_DEVICE_RESET, TYPE_KEY, TYPE_MOTION };
+    enum class Type { CONFIGURATION_CHANGED, DEVICE_RESET, KEY, MOTION };
+
+    static const char* typeToString(Type type) {
+        switch (type) {
+            case Type::CONFIGURATION_CHANGED:
+                return "CONFIGURATION_CHANGED";
+            case Type::DEVICE_RESET:
+                return "DEVICE_RESET";
+            case Type::KEY:
+                return "KEY";
+            case Type::MOTION:
+                return "MOTION";
+        }
+    }
 
     uint32_t sequenceNum;
     mutable int32_t refCount;
-    int32_t type;
+    Type type;
     nsecs_t eventTime;
     uint32_t policyFlags;
     InjectionState* injectionState;
@@ -66,7 +79,7 @@
     virtual void appendDescription(std::string& msg) const = 0;
 
 protected:
-    EventEntry(uint32_t sequenceNum, int32_t type, nsecs_t eventTime, uint32_t policyFlags);
+    EventEntry(uint32_t sequenceNum, Type type, nsecs_t eventTime, uint32_t policyFlags);
     virtual ~EventEntry();
     void releaseInjectionState();
 };
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 58a5b3c..b9bec44 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -252,6 +252,10 @@
         mDispatchEnabled(false),
         mDispatchFrozen(false),
         mInputFilterEnabled(false),
+        // mInTouchMode will be initialized by the WindowManager to the default device config.
+        // To avoid leaking stack in case that call never comes, and for tests,
+        // initialize it here anyways.
+        mInTouchMode(true),
         mFocusedDisplayId(ADISPLAY_ID_DEFAULT),
         mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) {
     mLooper = new Looper(false);
@@ -294,6 +298,12 @@
         if (runCommandsLockedInterruptible()) {
             nextWakeupTime = LONG_LONG_MIN;
         }
+
+        // We are about to enter an infinitely long sleep, because we have no commands or
+        // pending or queued events
+        if (nextWakeupTime == LONG_LONG_MAX) {
+            mDispatcherEnteredIdle.notify_all();
+        }
     } // release lock
 
     // Wait for callback or timeout or wake.  (make sure we round up, not down)
@@ -386,7 +396,7 @@
     }
 
     switch (mPendingEvent->type) {
-        case EventEntry::TYPE_CONFIGURATION_CHANGED: {
+        case EventEntry::Type::CONFIGURATION_CHANGED: {
             ConfigurationChangedEntry* typedEntry =
                     static_cast<ConfigurationChangedEntry*>(mPendingEvent);
             done = dispatchConfigurationChangedLocked(currentTime, typedEntry);
@@ -394,14 +404,14 @@
             break;
         }
 
-        case EventEntry::TYPE_DEVICE_RESET: {
+        case EventEntry::Type::DEVICE_RESET: {
             DeviceResetEntry* typedEntry = static_cast<DeviceResetEntry*>(mPendingEvent);
             done = dispatchDeviceResetLocked(currentTime, typedEntry);
             dropReason = DropReason::NOT_DROPPED; // device resets are never dropped
             break;
         }
 
-        case EventEntry::TYPE_KEY: {
+        case EventEntry::Type::KEY: {
             KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent);
             if (isAppSwitchDue) {
                 if (isAppSwitchKeyEvent(*typedEntry)) {
@@ -421,7 +431,7 @@
             break;
         }
 
-        case EventEntry::TYPE_MOTION: {
+        case EventEntry::Type::MOTION: {
             MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent);
             if (dropReason == DropReason::NOT_DROPPED && isAppSwitchDue) {
                 dropReason = DropReason::APP_SWITCH;
@@ -435,10 +445,6 @@
             done = dispatchMotionLocked(currentTime, typedEntry, &dropReason, nextWakeupTime);
             break;
         }
-
-        default:
-            ALOG_ASSERT(false);
-            break;
     }
 
     if (done) {
@@ -458,7 +464,7 @@
     traceInboundQueueLengthLocked();
 
     switch (entry->type) {
-        case EventEntry::TYPE_KEY: {
+        case EventEntry::Type::KEY: {
             // Optimize app switch latency.
             // If the application takes too long to catch up then we drop all events preceding
             // the app switch key.
@@ -480,7 +486,7 @@
             break;
         }
 
-        case EventEntry::TYPE_MOTION: {
+        case EventEntry::Type::MOTION: {
             // Optimize case where the current application is unresponsive and the user
             // decides to touch a window in a different application.
             // If the application takes too long to catch up then we drop all events preceding
@@ -508,6 +514,11 @@
             }
             break;
         }
+        case EventEntry::Type::CONFIGURATION_CHANGED:
+        case EventEntry::Type::DEVICE_RESET: {
+            // nothing to do
+            break;
+        }
     }
 
     return needWake;
@@ -627,12 +638,12 @@
     }
 
     switch (entry.type) {
-        case EventEntry::TYPE_KEY: {
+        case EventEntry::Type::KEY: {
             CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason);
             synthesizeCancelationEventsForAllConnectionsLocked(options);
             break;
         }
-        case EventEntry::TYPE_MOTION: {
+        case EventEntry::Type::MOTION: {
             const MotionEntry& motionEntry = static_cast<const MotionEntry&>(entry);
             if (motionEntry.source & AINPUT_SOURCE_CLASS_POINTER) {
                 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, reason);
@@ -643,6 +654,11 @@
             }
             break;
         }
+        case EventEntry::Type::CONFIGURATION_CHANGED:
+        case EventEntry::Type::DEVICE_RESET: {
+            LOG_ALWAYS_FATAL("Should not drop %s events", EventEntry::typeToString(entry.type));
+            break;
+        }
     }
 }
 
@@ -1174,18 +1190,19 @@
 int32_t InputDispatcher::getTargetDisplayId(const EventEntry& entry) {
     int32_t displayId;
     switch (entry.type) {
-        case EventEntry::TYPE_KEY: {
+        case EventEntry::Type::KEY: {
             const KeyEntry& keyEntry = static_cast<const KeyEntry&>(entry);
             displayId = keyEntry.displayId;
             break;
         }
-        case EventEntry::TYPE_MOTION: {
+        case EventEntry::Type::MOTION: {
             const MotionEntry& motionEntry = static_cast<const MotionEntry&>(entry);
             displayId = motionEntry.displayId;
             break;
         }
-        default: {
-            ALOGE("Unsupported event type '%" PRId32 "' for target display.", entry.type);
+        case EventEntry::Type::CONFIGURATION_CHANGED:
+        case EventEntry::Type::DEVICE_RESET: {
+            ALOGE("%s events do not have a target display", EventEntry::typeToString(entry.type));
             return ADISPLAY_ID_NONE;
         }
     }
@@ -1849,7 +1866,7 @@
     }
 
     // Ensure that the dispatch queues aren't too far backed up for this event.
-    if (eventEntry.type == EventEntry::TYPE_KEY) {
+    if (eventEntry.type == EventEntry::Type::KEY) {
         // If the event is a key event, then we must wait for all previous events to
         // complete before delivering it because previous events may have the
         // side-effect of transferring focus to a different window and we want to
@@ -1937,7 +1954,7 @@
 
     int32_t eventType = USER_ACTIVITY_EVENT_OTHER;
     switch (eventEntry.type) {
-        case EventEntry::TYPE_MOTION: {
+        case EventEntry::Type::MOTION: {
             const MotionEntry& motionEntry = static_cast<const MotionEntry&>(eventEntry);
             if (motionEntry.action == AMOTION_EVENT_ACTION_CANCEL) {
                 return;
@@ -1948,7 +1965,7 @@
             }
             break;
         }
-        case EventEntry::TYPE_KEY: {
+        case EventEntry::Type::KEY: {
             const KeyEntry& keyEntry = static_cast<const KeyEntry&>(eventEntry);
             if (keyEntry.flags & AKEY_EVENT_FLAG_CANCELED) {
                 return;
@@ -1956,6 +1973,12 @@
             eventType = USER_ACTIVITY_EVENT_BUTTON;
             break;
         }
+        case EventEntry::Type::CONFIGURATION_CHANGED:
+        case EventEntry::Type::DEVICE_RESET: {
+            LOG_ALWAYS_FATAL("%s events are not user activity",
+                             EventEntry::typeToString(eventEntry.type));
+            break;
+        }
     }
 
     std::unique_ptr<CommandEntry> commandEntry =
@@ -1996,7 +2019,7 @@
 
     // Split a motion event if needed.
     if (inputTarget->flags & InputTarget::FLAG_SPLIT) {
-        ALOG_ASSERT(eventEntry->type == EventEntry::TYPE_MOTION);
+        ALOG_ASSERT(eventEntry->type == EventEntry::Type::MOTION);
 
         const MotionEntry& originalMotionEntry = static_cast<const MotionEntry&>(*eventEntry);
         if (inputTarget->pointerIds.count() != originalMotionEntry.pointerCount) {
@@ -2080,7 +2103,7 @@
 
     // Apply target flags and update the connection's input state.
     switch (eventEntry->type) {
-        case EventEntry::TYPE_KEY: {
+        case EventEntry::Type::KEY: {
             const KeyEntry& keyEntry = static_cast<const KeyEntry&>(*eventEntry);
             dispatchEntry->resolvedAction = keyEntry.action;
             dispatchEntry->resolvedFlags = keyEntry.flags;
@@ -2097,7 +2120,7 @@
             break;
         }
 
-        case EventEntry::TYPE_MOTION: {
+        case EventEntry::Type::MOTION: {
             const MotionEntry& motionEntry = static_cast<const MotionEntry&>(*eventEntry);
             if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) {
                 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_OUTSIDE;
@@ -2147,6 +2170,12 @@
 
             break;
         }
+        case EventEntry::Type::CONFIGURATION_CHANGED:
+        case EventEntry::Type::DEVICE_RESET: {
+            LOG_ALWAYS_FATAL("%s events should not go to apps",
+                             EventEntry::typeToString(eventEntry->type));
+            break;
+        }
     }
 
     // Remember that we are waiting for this dispatch to complete.
@@ -2206,7 +2235,7 @@
         status_t status;
         EventEntry* eventEntry = dispatchEntry->eventEntry;
         switch (eventEntry->type) {
-            case EventEntry::TYPE_KEY: {
+            case EventEntry::Type::KEY: {
                 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry);
 
                 // Publish the key event.
@@ -2221,7 +2250,7 @@
                 break;
             }
 
-            case EventEntry::TYPE_MOTION: {
+            case EventEntry::Type::MOTION: {
                 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry);
 
                 PointerCoords scaledCoords[MAX_POINTERS];
@@ -2276,10 +2305,12 @@
                 reportTouchEventForStatistics(*motionEntry);
                 break;
             }
-
-            default:
-                ALOG_ASSERT(false);
+            case EventEntry::Type::CONFIGURATION_CHANGED:
+            case EventEntry::Type::DEVICE_RESET: {
+                LOG_ALWAYS_FATAL("Should never start dispatch cycles for %s events",
+                                 EventEntry::typeToString(eventEntry->type));
                 return;
+            }
         }
 
         // Check the result.
@@ -2502,15 +2533,23 @@
         for (size_t i = 0; i < cancelationEvents.size(); i++) {
             EventEntry* cancelationEventEntry = cancelationEvents[i];
             switch (cancelationEventEntry->type) {
-                case EventEntry::TYPE_KEY:
+                case EventEntry::Type::KEY: {
                     logOutboundKeyDetails("cancel - ",
                                           static_cast<const KeyEntry&>(*cancelationEventEntry));
                     break;
-                case EventEntry::TYPE_MOTION:
+                }
+                case EventEntry::Type::MOTION: {
                     logOutboundMotionDetails("cancel - ",
                                              static_cast<const MotionEntry&>(
                                                      *cancelationEventEntry));
                     break;
+                }
+                case EventEntry::Type::CONFIGURATION_CHANGED:
+                case EventEntry::Type::DEVICE_RESET: {
+                    LOG_ALWAYS_FATAL("%s event should not be found inside Connections's queue",
+                                     EventEntry::typeToString(cancelationEventEntry->type));
+                    break;
+                }
             }
 
             InputTarget target;
@@ -3003,7 +3042,7 @@
         }
 
         default:
-            ALOGW("Cannot inject event of type %d", event->getType());
+            ALOGW("Cannot inject %s events", inputEventTypeToString(event->getType()));
             return INPUT_EVENT_INJECTION_FAILED;
     }
 
@@ -3509,6 +3548,11 @@
     mLooper->wake();
 }
 
+void InputDispatcher::setInTouchMode(bool inTouchMode) {
+    std::scoped_lock lock(mLock);
+    mInTouchMode = inTouchMode;
+}
+
 bool InputDispatcher::transferTouchFocus(const sp<IBinder>& fromToken, const sp<IBinder>& toToken) {
     if (fromToken == toToken) {
         if (DEBUG_FOCUS) {
@@ -4237,11 +4281,11 @@
     }
 
     bool restartEvent;
-    if (dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) {
+    if (dispatchEntry->eventEntry->type == EventEntry::Type::KEY) {
         KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry);
         restartEvent =
                 afterKeyEventLockedInterruptible(connection, dispatchEntry, keyEntry, handled);
-    } else if (dispatchEntry->eventEntry->type == EventEntry::TYPE_MOTION) {
+    } else if (dispatchEntry->eventEntry->type == EventEntry::Type::MOTION) {
         MotionEntry* motionEntry = static_cast<MotionEntry*>(dispatchEntry->eventEntry);
         restartEvent = afterMotionEventLockedInterruptible(connection, dispatchEntry, motionEntry,
                                                            handled);
@@ -4544,4 +4588,22 @@
     mDispatcherIsAlive.wait(_l);
 }
 
+/**
+ * Wake up the dispatcher and wait until it processes all events and commands.
+ * The notification of mDispatcherEnteredIdle is guaranteed to happen after wake(), so
+ * this method can be safely called from any thread, as long as you've ensured that
+ * the work you are interested in completing has already been queued.
+ */
+bool InputDispatcher::waitForIdle() {
+    /**
+     * Timeout should represent the longest possible time that a device might spend processing
+     * events and commands.
+     */
+    constexpr std::chrono::duration TIMEOUT = 100ms;
+    std::unique_lock lock(mLock);
+    mLooper->wake();
+    std::cv_status result = mDispatcherEnteredIdle.wait_for(lock, TIMEOUT);
+    return result == std::cv_status::no_timeout;
+}
+
 } // namespace android::inputdispatcher
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index d21b0a1..38f8674 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -81,6 +81,7 @@
 
     virtual void dump(std::string& dump) override;
     virtual void monitor() override;
+    virtual bool waitForIdle() override;
 
     virtual void dispatchOnce() override;
 
@@ -102,6 +103,7 @@
     virtual void setFocusedDisplay(int32_t displayId) override;
     virtual void setInputDispatchMode(bool enabled, bool frozen) override;
     virtual void setInputFilterEnabled(bool enabled) override;
+    virtual void setInTouchMode(bool inTouchMode) override;
 
     virtual bool transferTouchFocus(const sp<IBinder>& fromToken,
                                     const sp<IBinder>& toToken) override;
@@ -128,6 +130,7 @@
     std::mutex mLock;
 
     std::condition_variable mDispatcherIsAlive;
+    std::condition_variable mDispatcherEnteredIdle;
 
     sp<Looper> mLooper;
 
@@ -247,6 +250,7 @@
     bool mDispatchEnabled GUARDED_BY(mLock);
     bool mDispatchFrozen GUARDED_BY(mLock);
     bool mInputFilterEnabled GUARDED_BY(mLock);
+    bool mInTouchMode GUARDED_BY(mLock);
 
     std::unordered_map<int32_t, std::vector<sp<InputWindowHandle>>> mWindowHandlesByDisplay
             GUARDED_BY(mLock);
diff --git a/services/inputflinger/dispatcher/InputTarget.h b/services/inputflinger/dispatcher/InputTarget.h
index 5acf92b..2e9bca2 100644
--- a/services/inputflinger/dispatcher/InputTarget.h
+++ b/services/inputflinger/dispatcher/InputTarget.h
@@ -93,21 +93,22 @@
     sp<InputChannel> inputChannel;
 
     // Flags for the input target.
-    int32_t flags;
+    int32_t flags = 0;
 
     // The x and y offset to add to a MotionEvent as it is delivered.
     // (ignored for KeyEvents)
-    float xOffset, yOffset;
+    float xOffset = 0.0f;
+    float yOffset = 0.0f;
 
     // Scaling factor to apply to MotionEvent as it is delivered.
     // (ignored for KeyEvents)
-    float globalScaleFactor;
+    float globalScaleFactor = 1.0f;
     float windowXScale = 1.0f;
     float windowYScale = 1.0f;
 
     // The subset of pointer ids to include in motion events dispatched to this input target
     // if FLAG_SPLIT is set.
-    BitSet32 pointerIds;
+    BitSet32 pointerIds{};
 };
 
 std::string dispatchModeToString(int32_t dispatchMode);
diff --git a/services/inputflinger/dispatcher/include/InputDispatcherInterface.h b/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
index ce7366f..db9fba6 100644
--- a/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
+++ b/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
@@ -63,6 +63,14 @@
     /* Called by the heatbeat to ensures that the dispatcher has not deadlocked. */
     virtual void monitor() = 0;
 
+    /**
+     * Wait until dispatcher is idle. That means, there are no further events to be processed,
+     * and all of the policy callbacks have been completed.
+     * Return true if the dispatcher is idle.
+     * Return false if the timeout waiting for the dispatcher to become idle has expired.
+     */
+    virtual bool waitForIdle() = 0;
+
     /* Runs a single iteration of the dispatch loop.
      * Nominally processes one queued event, a timeout, or a response from an input consumer.
      *
@@ -116,6 +124,14 @@
      */
     virtual void setInputFilterEnabled(bool enabled) = 0;
 
+    /**
+     * Set the touch mode state.
+     * Touch mode is a global state that apps may enter / exit based on specific
+     * user interactions with input devices.
+     * If true, the device is in touch mode.
+     */
+    virtual void setInTouchMode(bool inTouchMode) = 0;
+
     /* Transfers touch focus from one window to another window.
      *
      * Returns true on success.  False if the window did not actually have touch focus.
diff --git a/services/inputflinger/include/InputReaderBase.h b/services/inputflinger/include/InputReaderBase.h
index 5d576b9..56c0a73 100644
--- a/services/inputflinger/include/InputReaderBase.h
+++ b/services/inputflinger/include/InputReaderBase.h
@@ -19,12 +19,12 @@
 
 #include "PointerControllerInterface.h"
 
+#include <input/DisplayViewport.h>
 #include <input/Input.h>
 #include <input/InputDevice.h>
-#include <input/DisplayViewport.h>
 #include <input/VelocityControl.h>
 #include <input/VelocityTracker.h>
-#include <utils/Thread.h>
+#include <utils/Errors.h>
 #include <utils/RefBase.h>
 
 #include <stddef.h>
@@ -44,7 +44,16 @@
 
 namespace android {
 
-/* Processes raw input events and sends cooked event data to an input listener. */
+// --- InputReaderInterface ---
+
+/* The interface for the InputReader shared library.
+ *
+ * Manages one or more threads that process raw input events and sends cooked event data to an
+ * input listener.
+ *
+ * The implementation must guarantee thread safety for this interface. However, since the input
+ * listener is NOT thread safe, all calls to the listener must happen from the same thread.
+ */
 class InputReaderInterface : public virtual RefBase {
 protected:
     InputReaderInterface() { }
@@ -56,18 +65,17 @@
      * This method may be called on any thread (usually by the input manager). */
     virtual void dump(std::string& dump) = 0;
 
-    /* Called by the heatbeat to ensures that the reader has not deadlocked. */
+    /* Called by the heartbeat to ensures that the reader has not deadlocked. */
     virtual void monitor() = 0;
 
     /* Returns true if the input device is enabled. */
     virtual bool isInputDeviceEnabled(int32_t deviceId) = 0;
 
-    /* Runs a single iteration of the processing loop.
-     * Nominally reads and processes one incoming message from the EventHub.
-     *
-     * This method should be called on the input reader thread.
-     */
-    virtual void loopOnce() = 0;
+    /* Makes the reader start processing events from the kernel. */
+    virtual status_t start() = 0;
+
+    /* Makes the reader stop processing any more events. */
+    virtual status_t stop() = 0;
 
     /* Gets information about all input devices.
      *
@@ -104,17 +112,7 @@
     virtual bool canDispatchToDisplay(int32_t deviceId, int32_t displayId) = 0;
 };
 
-/* Reads raw events from the event hub and processes them, endlessly. */
-class InputReaderThread : public Thread {
-public:
-    explicit InputReaderThread(const sp<InputReaderInterface>& reader);
-    virtual ~InputReaderThread();
-
-private:
-    sp<InputReaderInterface> mReader;
-
-    virtual bool threadLoop();
-};
+// --- InputReaderConfiguration ---
 
 /*
  * Input reader configuration.
@@ -285,6 +283,8 @@
     std::vector<DisplayViewport> mDisplays;
 };
 
+// --- TouchAffineTransformation ---
+
 struct TouchAffineTransformation {
     float x_scale;
     float x_ymix;
@@ -307,6 +307,8 @@
     void applyTo(float& x, float& y) const;
 };
 
+// --- InputReaderPolicyInterface ---
+
 /*
  * Input reader policy interface.
  *
@@ -316,8 +318,8 @@
  * The actual implementation is partially supported by callbacks into the DVM
  * via JNI.  This interface is also mocked in the unit tests.
  *
- * These methods must NOT re-enter the input reader since they may be called while
- * holding the input reader lock.
+ * These methods will NOT re-enter the input reader interface, so they may be called from
+ * any method in the input reader interface.
  */
 class InputReaderPolicyInterface : public virtual RefBase {
 protected:
diff --git a/services/inputflinger/reader/Android.bp b/services/inputflinger/reader/Android.bp
index 3c16070..23c08b2 100644
--- a/services/inputflinger/reader/Android.bp
+++ b/services/inputflinger/reader/Android.bp
@@ -58,7 +58,6 @@
         "liblog",
         "libui",
         "libutils",
-        "libhardware_legacy",
     ],
 
     header_libs: [
diff --git a/services/inputflinger/reader/EventHub.cpp b/services/inputflinger/reader/EventHub.cpp
index c8da0ab..264d287 100644
--- a/services/inputflinger/reader/EventHub.cpp
+++ b/services/inputflinger/reader/EventHub.cpp
@@ -37,8 +37,6 @@
 
 #include "EventHub.h"
 
-#include <hardware_legacy/power.h>
-
 #include <android-base/stringprintf.h>
 #include <cutils/properties.h>
 #include <openssl/sha.h>
@@ -71,7 +69,6 @@
 
 static constexpr bool DEBUG = false;
 
-static const char* WAKE_LOCK_ID = "KeyEvents";
 static const char* DEVICE_PATH = "/dev/input";
 // v4l2 devices go directly into /dev
 static const char* VIDEO_DEVICE_PATH = "/dev";
@@ -296,7 +293,6 @@
         mPendingEventIndex(0),
         mPendingINotify(false) {
     ensureProcessCanBlockSuspend();
-    acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID);
 
     mEpollFd = epoll_create1(EPOLL_CLOEXEC);
     LOG_ALWAYS_FATAL_IF(mEpollFd < 0, "Could not create epoll instance: %s", strerror(errno));
@@ -354,8 +350,6 @@
     ::close(mINotifyFd);
     ::close(mWakeReadPipeFd);
     ::close(mWakeWritePipeFd);
-
-    release_wake_lock(WAKE_LOCK_ID);
 }
 
 InputDeviceIdentifier EventHub::getDeviceIdentifier(int32_t deviceId) const {
@@ -1046,26 +1040,24 @@
             break;
         }
 
-        // Poll for events.  Mind the wake lock dance!
-        // We hold a wake lock at all times except during epoll_wait().  This works due to some
-        // subtle choreography.  When a device driver has pending (unread) events, it acquires
-        // a kernel wake lock.  However, once the last pending event has been read, the device
-        // driver will release the kernel wake lock.  To prevent the system from going to sleep
-        // when this happens, the EventHub holds onto its own user wake lock while the client
-        // is processing events.  Thus the system can only sleep if there are no events
-        // pending or currently being processed.
+        // Poll for events.
+        // When a device driver has pending (unread) events, it acquires
+        // a kernel wake lock.  Once the last pending event has been read, the device
+        // driver will release the kernel wake lock, but the epoll will hold the wakelock,
+        // since we are using EPOLLWAKEUP. The wakelock is released by the epoll when epoll_wait
+        // is called again for the same fd that produced the event.
+        // Thus the system can only sleep if there are no events pending or
+        // currently being processed.
         //
         // The timeout is advisory only.  If the device is asleep, it will not wake just to
         // service the timeout.
         mPendingEventIndex = 0;
 
-        mLock.unlock(); // release lock before poll, must be before release_wake_lock
-        release_wake_lock(WAKE_LOCK_ID);
+        mLock.unlock(); // release lock before poll
 
         int pollResult = epoll_wait(mEpollFd, mPendingEventItems, EPOLL_MAX_EVENTS, timeoutMillis);
 
-        acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID);
-        mLock.lock(); // reacquire lock after poll, must be after acquire_wake_lock
+        mLock.lock(); // reacquire lock after poll
 
         if (pollResult == 0) {
             // Timed out.
diff --git a/services/inputflinger/reader/InputReader.cpp b/services/inputflinger/reader/InputReader.cpp
index 1c5adc3..05f0db1 100644
--- a/services/inputflinger/reader/InputReader.cpp
+++ b/services/inputflinger/reader/InputReader.cpp
@@ -38,16 +38,38 @@
 #include <unistd.h>
 
 #include <log/log.h>
+#include <utils/Errors.h>
 
 #include <android-base/stringprintf.h>
 #include <input/Keyboard.h>
 #include <input/VirtualKeyMap.h>
-
+#include <utils/Thread.h>
 
 using android::base::StringPrintf;
 
 namespace android {
 
+// --- InputReader::InputReaderThread ---
+
+/* Thread that reads raw events from the event hub and processes them, endlessly. */
+class InputReader::InputReaderThread : public Thread {
+public:
+    explicit InputReaderThread(InputReader* reader)
+          : Thread(/* canCallJava */ true), mReader(reader) {}
+
+    ~InputReaderThread() {}
+
+private:
+    InputReader* mReader;
+
+    bool threadLoop() override {
+        mReader->loopOnce();
+        return true;
+    }
+};
+
+// --- InputReader ---
+
 InputReader::InputReader(std::shared_ptr<EventHubInterface> eventHub,
                          const sp<InputReaderPolicyInterface>& policy,
                          const sp<InputListenerInterface>& listener)
@@ -61,6 +83,7 @@
         mNextTimeout(LLONG_MAX),
         mConfigurationChangesToRefresh(0) {
     mQueuedListener = new QueuedInputListener(listener);
+    mThread = new InputReaderThread(this);
 
     { // acquire lock
         AutoMutex _l(mLock);
@@ -76,6 +99,28 @@
     }
 }
 
+status_t InputReader::start() {
+    if (mThread->isRunning()) {
+        return ALREADY_EXISTS;
+    }
+    return mThread->run("InputReader", PRIORITY_URGENT_DISPLAY);
+}
+
+status_t InputReader::stop() {
+    if (!mThread->isRunning()) {
+        return OK;
+    }
+    if (gettid() == mThread->getTid()) {
+        ALOGE("InputReader can only be stopped from outside of the InputReaderThread!");
+        return INVALID_OPERATION;
+    }
+    // Directly calling requestExitAndWait() causes the thread to not exit
+    // if mEventHub is waiting for a long timeout.
+    mThread->requestExit();
+    mEventHub->wake();
+    return mThread->requestExitAndWait();
+}
+
 void InputReader::loopOnce() {
     int32_t oldGeneration;
     int32_t timeoutMillis;
diff --git a/services/inputflinger/reader/include/InputReader.h b/services/inputflinger/reader/include/InputReader.h
index 557eb3b..5024906 100644
--- a/services/inputflinger/reader/include/InputReader.h
+++ b/services/inputflinger/reader/include/InputReader.h
@@ -38,12 +38,12 @@
  * that it sends to the input listener.  Some functions of the input reader, such as early
  * event filtering in low power states, are controlled by a separate policy object.
  *
- * The InputReader owns a collection of InputMappers.  Most of the work it does happens
- * on the input reader thread but the InputReader can receive queries from other system
+ * The InputReader owns a collection of InputMappers. InputReader starts its own thread, where
+ * most of the work happens, but the InputReader can receive queries from other system
  * components running on arbitrary threads.  To keep things manageable, the InputReader
  * uses a single Mutex to guard its state.  The Mutex may be held while calling into the
  * EventHub or the InputReaderPolicy but it is never held while calling into the
- * InputListener.
+ * InputListener. All calls to InputListener must happen from InputReader's thread.
  */
 class InputReader : public InputReaderInterface {
 public:
@@ -55,7 +55,8 @@
     virtual void dump(std::string& dump) override;
     virtual void monitor() override;
 
-    virtual void loopOnce() override;
+    virtual status_t start() override;
+    virtual status_t stop() override;
 
     virtual void getInputDevices(std::vector<InputDeviceInfo>& outInputDevices) override;
 
@@ -86,6 +87,10 @@
                                             const InputDeviceIdentifier& identifier,
                                             uint32_t classes);
 
+    // With each iteration of the loop, InputReader reads and processes one incoming message from
+    // the EventHub.
+    void loopOnce();
+
     class ContextImpl : public InputReaderContext {
         InputReader* mReader;
 
@@ -111,6 +116,9 @@
     friend class ContextImpl;
 
 private:
+    class InputReaderThread;
+    sp<InputReaderThread> mThread;
+
     Mutex mLock;
 
     Condition mReaderIsAliveCondition;
diff --git a/services/inputflinger/reader/mapper/SwitchInputMapper.cpp b/services/inputflinger/reader/mapper/SwitchInputMapper.cpp
index 4ff941f..16095b9 100644
--- a/services/inputflinger/reader/mapper/SwitchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/SwitchInputMapper.cpp
@@ -56,8 +56,8 @@
 void SwitchInputMapper::sync(nsecs_t when) {
     if (mUpdatedSwitchMask) {
         uint32_t updatedSwitchValues = mSwitchValues & mUpdatedSwitchMask;
-        NotifySwitchArgs args(mContext->getNextSequenceNum(), when, 0, updatedSwitchValues,
-                              mUpdatedSwitchMask);
+        NotifySwitchArgs args(mContext->getNextSequenceNum(), when, 0 /*policyFlags*/,
+                              updatedSwitchValues, mUpdatedSwitchMask);
         getListener()->notifySwitch(&args);
 
         mUpdatedSwitchMask = 0;
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 2a29e0d..c8d39cf 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -19,6 +19,7 @@
 #include <InputDispatcherThread.h>
 
 #include <binder/Binder.h>
+#include <input/Input.h>
 
 #include <gtest/gtest.h>
 #include <linux/input.h>
@@ -50,49 +51,55 @@
 
 public:
     FakeInputDispatcherPolicy() {
-        mOnPointerDownToken.clear();
     }
 
     void assertFilterInputEventWasCalled(const NotifyKeyArgs& args) {
-        ASSERT_NE(nullptr, mFilteredEvent) << "Expected filterInputEvent() to have been called.";
-        ASSERT_EQ(mFilteredEvent->getType(), AINPUT_EVENT_TYPE_KEY);
-
-        const KeyEvent& keyEvent = static_cast<const KeyEvent&>(*mFilteredEvent);
-        ASSERT_EQ(keyEvent.getEventTime(), args.eventTime);
-        ASSERT_EQ(keyEvent.getAction(), args.action);
-        ASSERT_EQ(keyEvent.getDisplayId(), args.displayId);
-
-        reset();
+        assertFilterInputEventWasCalled(AINPUT_EVENT_TYPE_KEY, args.eventTime, args.action,
+                                        args.displayId);
     }
 
     void assertFilterInputEventWasCalled(const NotifyMotionArgs& args) {
-        ASSERT_NE(nullptr, mFilteredEvent) << "Expected filterInputEvent() to have been called.";
-        ASSERT_EQ(mFilteredEvent->getType(), AINPUT_EVENT_TYPE_MOTION);
-
-        const MotionEvent& motionEvent = static_cast<const MotionEvent&>(*mFilteredEvent);
-        ASSERT_EQ(motionEvent.getEventTime(), args.eventTime);
-        ASSERT_EQ(motionEvent.getAction(), args.action);
-        ASSERT_EQ(motionEvent.getDisplayId(), args.displayId);
-
-        reset();
+        assertFilterInputEventWasCalled(AINPUT_EVENT_TYPE_MOTION, args.eventTime, args.action,
+                                        args.displayId);
     }
 
-    void assertFilterInputEventWasNotCalled() {
-        ASSERT_EQ(nullptr, mFilteredEvent)
-                << "Expected filterInputEvent() to not have been called.";
+    void assertFilterInputEventWasNotCalled() { ASSERT_EQ(nullptr, mFilteredEvent); }
+
+    void assertNotifyConfigurationChangedWasCalled(nsecs_t when) {
+        ASSERT_TRUE(mConfigurationChangedTime)
+                << "Timed out waiting for configuration changed call";
+        ASSERT_EQ(*mConfigurationChangedTime, when);
+        mConfigurationChangedTime = std::nullopt;
+    }
+
+    void assertNotifySwitchWasCalled(const NotifySwitchArgs& args) {
+        ASSERT_TRUE(mLastNotifySwitch);
+        // We do not check sequenceNum because it is not exposed to the policy
+        EXPECT_EQ(args.eventTime, mLastNotifySwitch->eventTime);
+        EXPECT_EQ(args.policyFlags, mLastNotifySwitch->policyFlags);
+        EXPECT_EQ(args.switchValues, mLastNotifySwitch->switchValues);
+        EXPECT_EQ(args.switchMask, mLastNotifySwitch->switchMask);
+        mLastNotifySwitch = std::nullopt;
     }
 
     void assertOnPointerDownEquals(const sp<IBinder>& touchedToken) {
-        ASSERT_EQ(mOnPointerDownToken, touchedToken)
-                << "Expected token from onPointerDownOutsideFocus was not matched";
-        reset();
+        ASSERT_EQ(touchedToken, mOnPointerDownToken);
+        mOnPointerDownToken.clear();
+    }
+
+    void assertOnPointerDownWasNotCalled() {
+        ASSERT_TRUE(mOnPointerDownToken == nullptr)
+                << "Expected onPointerDownOutsideFocus to not have been called";
     }
 
 private:
     std::unique_ptr<InputEvent> mFilteredEvent;
+    std::optional<nsecs_t> mConfigurationChangedTime;
     sp<IBinder> mOnPointerDownToken;
+    std::optional<NotifySwitchArgs> mLastNotifySwitch;
 
-    virtual void notifyConfigurationChanged(nsecs_t) {
+    virtual void notifyConfigurationChanged(nsecs_t when) override {
+        mConfigurationChangedTime = when;
     }
 
     virtual nsecs_t notifyANR(const sp<InputApplicationHandle>&,
@@ -144,7 +151,13 @@
         return false;
     }
 
-    virtual void notifySwitch(nsecs_t, uint32_t, uint32_t, uint32_t) {
+    virtual void notifySwitch(nsecs_t when, uint32_t switchValues, uint32_t switchMask,
+                              uint32_t policyFlags) override {
+        /** We simply reconstruct NotifySwitchArgs in policy because InputDispatcher is
+         * essentially a passthrough for notifySwitch.
+         */
+        mLastNotifySwitch =
+                NotifySwitchArgs(1 /*sequenceNum*/, when, policyFlags, switchValues, switchMask);
     }
 
     virtual void pokeUserActivity(nsecs_t, int32_t) {
@@ -158,9 +171,26 @@
         mOnPointerDownToken = newToken;
     }
 
-    void reset() {
+    void assertFilterInputEventWasCalled(int type, nsecs_t eventTime, int32_t action,
+                                         int32_t displayId) {
+        ASSERT_NE(nullptr, mFilteredEvent) << "Expected filterInputEvent() to have been called.";
+        ASSERT_EQ(mFilteredEvent->getType(), type);
+
+        if (type == AINPUT_EVENT_TYPE_KEY) {
+            const KeyEvent& keyEvent = static_cast<const KeyEvent&>(*mFilteredEvent);
+            EXPECT_EQ(keyEvent.getEventTime(), eventTime);
+            EXPECT_EQ(keyEvent.getAction(), action);
+            EXPECT_EQ(keyEvent.getDisplayId(), displayId);
+        } else if (type == AINPUT_EVENT_TYPE_MOTION) {
+            const MotionEvent& motionEvent = static_cast<const MotionEvent&>(*mFilteredEvent);
+            EXPECT_EQ(motionEvent.getEventTime(), eventTime);
+            EXPECT_EQ(motionEvent.getAction(), action);
+            EXPECT_EQ(motionEvent.getDisplayId(), displayId);
+        } else {
+            FAIL() << "Unknown type: " << type;
+        }
+
         mFilteredEvent = nullptr;
-        mOnPointerDownToken.clear();
     }
 };
 
@@ -348,9 +378,30 @@
             << "Should reject motion events with duplicate pointer ids.";
 }
 
+/* Test InputDispatcher for notifyConfigurationChanged and notifySwitch events */
+
+TEST_F(InputDispatcherTest, NotifyConfigurationChanged_CallsPolicy) {
+    constexpr nsecs_t eventTime = 20;
+    NotifyConfigurationChangedArgs args(10 /*sequenceNum*/, eventTime);
+    mDispatcher->notifyConfigurationChanged(&args);
+    ASSERT_TRUE(mDispatcher->waitForIdle());
+
+    mFakePolicy->assertNotifyConfigurationChangedWasCalled(eventTime);
+}
+
+TEST_F(InputDispatcherTest, NotifySwitch_CallsPolicy) {
+    NotifySwitchArgs args(10 /*sequenceNum*/, 20 /*eventTime*/, 0 /*policyFlags*/,
+                          1 /*switchValues*/, 2 /*switchMask*/);
+    mDispatcher->notifySwitch(&args);
+
+    // InputDispatcher adds POLICY_FLAG_TRUSTED because the event went through InputListener
+    args.policyFlags |= POLICY_FLAG_TRUSTED;
+    mFakePolicy->assertNotifySwitchWasCalled(args);
+}
+
 // --- InputDispatcherTest SetInputWindowTest ---
-static const int32_t INJECT_EVENT_TIMEOUT = 500;
-static const int32_t DISPATCHING_TIMEOUT = 100;
+static constexpr int32_t INJECT_EVENT_TIMEOUT = 500;
+static constexpr int32_t DISPATCHING_TIMEOUT = 100;
 
 class FakeApplicationHandle : public InputApplicationHandle {
 public:
@@ -365,19 +416,51 @@
 
 class FakeInputReceiver {
 public:
-    void consumeEvent(int32_t expectedEventType, int32_t expectedAction, int32_t expectedDisplayId,
-                      int32_t expectedFlags) {
+    InputEvent* consume() {
         uint32_t consumeSeq;
         InputEvent* event;
-        status_t status = mConsumer->consume(&mEventFactory, false /*consumeBatches*/, -1,
-            &consumeSeq, &event);
 
-        ASSERT_EQ(OK, status)
-                << mName.c_str() << ": consumer consume should return OK.";
-        ASSERT_TRUE(event != nullptr)
-                << mName.c_str() << ": consumer should have returned non-NULL event.";
+        std::chrono::time_point start = std::chrono::steady_clock::now();
+        status_t status = WOULD_BLOCK;
+        while (status == WOULD_BLOCK) {
+            status = mConsumer->consume(&mEventFactory, false /*consumeBatches*/, -1, &consumeSeq,
+                                        &event);
+            std::chrono::duration elapsed = std::chrono::steady_clock::now() - start;
+            if (elapsed > 100ms) {
+                break;
+            }
+        }
+
+        if (status == WOULD_BLOCK) {
+            // Just means there's no event available.
+            return nullptr;
+        }
+
+        if (status != OK) {
+            ADD_FAILURE() << mName.c_str() << ": consumer consume should return OK.";
+            return nullptr;
+        }
+        if (event == nullptr) {
+            ADD_FAILURE() << "Consumed correctly, but received NULL event from consumer";
+            return nullptr;
+        }
+
+        status = mConsumer->sendFinishedSignal(consumeSeq, handled());
+        if (status != OK) {
+            ADD_FAILURE() << mName.c_str() << ": consumer sendFinishedSignal should return OK.";
+        }
+        return event;
+    }
+
+    void consumeEvent(int32_t expectedEventType, int32_t expectedAction, int32_t expectedDisplayId,
+                      int32_t expectedFlags) {
+        InputEvent* event = consume();
+
+        ASSERT_NE(nullptr, event) << mName.c_str()
+                                  << ": consumer should have returned non-NULL event.";
         ASSERT_EQ(expectedEventType, event->getType())
-                << mName.c_str() << ": event type should match.";
+                << mName.c_str() << "expected " << inputEventTypeToString(expectedEventType)
+                << " event, got " << inputEventTypeToString(event->getType()) << " event";
 
         EXPECT_EQ(expectedDisplayId, event->getDisplayId());
 
@@ -398,10 +481,6 @@
                 FAIL() << mName.c_str() << ": invalid event type: " << expectedEventType;
             }
         }
-
-        status = mConsumer->sendFinishedSignal(consumeSeq, handled());
-        ASSERT_EQ(OK, status)
-                << mName.c_str() << ": consumer sendFinishedSignal should return OK.";
     }
 
     void consumeKeyDown(int32_t expectedDisplayId, int32_t expectedFlags = 0) {
@@ -415,13 +494,10 @@
     }
 
     void assertNoEvents() {
-        uint32_t consumeSeq;
-        InputEvent* event;
-        status_t status = mConsumer->consume(&mEventFactory, false /*consumeBatches*/, -1,
-            &consumeSeq, &event);
-        ASSERT_NE(OK, status)
+        InputEvent* event = consume();
+        ASSERT_EQ(nullptr, event)
                 << mName.c_str()
-                << ": should not have received any events, so consume(..) should not return OK.";
+                << ": should not have received any events, so consume() should return NULL";
     }
 
 protected:
@@ -508,9 +584,7 @@
         InputWindowHandle::releaseChannel();
     }
 protected:
-    virtual bool handled() {
-        return true;
-    }
+    virtual bool handled() override { return true; }
 
     bool mFocused;
     Rect mFrame;
@@ -610,10 +684,7 @@
     sp<FakeWindowHandle> window = new FakeWindowHandle(application, mDispatcher, "Fake Window",
             ADISPLAY_ID_DEFAULT);
 
-    std::vector<sp<InputWindowHandle>> inputWindowHandles;
-    inputWindowHandles.push_back(window);
-
-    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    mDispatcher->setInputWindows({window}, ADISPLAY_ID_DEFAULT);
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher,
             AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT))
             << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
@@ -630,11 +701,7 @@
     sp<FakeWindowHandle> windowSecond = new FakeWindowHandle(application, mDispatcher, "Second",
             ADISPLAY_ID_DEFAULT);
 
-    std::vector<sp<InputWindowHandle>> inputWindowHandles;
-    inputWindowHandles.push_back(windowTop);
-    inputWindowHandles.push_back(windowSecond);
-
-    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    mDispatcher->setInputWindows({windowTop, windowSecond}, ADISPLAY_ID_DEFAULT);
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher,
             AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT))
             << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
@@ -656,11 +723,8 @@
 
     // Expect one focus window exist in display.
     windowSecond->setFocus();
-    std::vector<sp<InputWindowHandle>> inputWindowHandles;
-    inputWindowHandles.push_back(windowTop);
-    inputWindowHandles.push_back(windowSecond);
 
-    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    mDispatcher->setInputWindows({windowTop, windowSecond}, ADISPLAY_ID_DEFAULT);
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher))
             << "Inject key event should return INPUT_EVENT_INJECTION_SUCCEEDED";
 
@@ -682,11 +746,8 @@
     // Display has two focused windows. Add them to inputWindowsHandles in z-order (top most first)
     windowTop->setFocus();
     windowSecond->setFocus();
-    std::vector<sp<InputWindowHandle>> inputWindowHandles;
-    inputWindowHandles.push_back(windowTop);
-    inputWindowHandles.push_back(windowSecond);
 
-    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    mDispatcher->setInputWindows({windowTop, windowSecond}, ADISPLAY_ID_DEFAULT);
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher))
             << "Inject key event should return INPUT_EVENT_INJECTION_SUCCEEDED";
 
@@ -708,12 +769,9 @@
 
     windowTop->setFocus();
     windowSecond->setFocus();
-    std::vector<sp<InputWindowHandle>> inputWindowHandles;
-    inputWindowHandles.push_back(windowTop);
-    inputWindowHandles.push_back(windowSecond);
     // Release channel for window is no longer valid.
     windowTop->releaseChannel();
-    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    mDispatcher->setInputWindows({windowTop, windowSecond}, ADISPLAY_ID_DEFAULT);
 
     // Test inject a key down, should dispatch to a valid window.
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher))
@@ -738,8 +796,7 @@
 
     mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
 
-    std::vector<sp<InputWindowHandle>> inputWindowHandles{windowLeft, windowRight};
-    mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+    mDispatcher->setInputWindows({windowLeft, windowRight}, ADISPLAY_ID_DEFAULT);
 
     // Inject an event with coordinate in the area of right window, with mouse cursor in the area of
     // left window. This event should be dispatched to the left window.
@@ -750,6 +807,51 @@
     windowRight->assertNoEvents();
 }
 
+TEST_F(InputDispatcherTest, NotifyDeviceReset_CancelsKeyStream) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> window =
+            new FakeWindowHandle(application, mDispatcher, "Fake Window", ADISPLAY_ID_DEFAULT);
+    window->setFocus();
+
+    mDispatcher->setInputWindows({window}, ADISPLAY_ID_DEFAULT);
+
+    NotifyKeyArgs keyArgs = generateKeyArgs(AKEY_EVENT_ACTION_DOWN, ADISPLAY_ID_DEFAULT);
+    mDispatcher->notifyKey(&keyArgs);
+
+    // Window should receive key down event.
+    window->consumeKeyDown(ADISPLAY_ID_DEFAULT);
+
+    // When device reset happens, that key stream should be terminated with FLAG_CANCELED
+    // on the app side.
+    NotifyDeviceResetArgs args(10 /*sequenceNum*/, 20 /*eventTime*/, DEVICE_ID);
+    mDispatcher->notifyDeviceReset(&args);
+    window->consumeEvent(AINPUT_EVENT_TYPE_KEY, AKEY_EVENT_ACTION_UP, ADISPLAY_ID_DEFAULT,
+                         AKEY_EVENT_FLAG_CANCELED);
+}
+
+TEST_F(InputDispatcherTest, NotifyDeviceReset_CancelsMotionStream) {
+    sp<FakeApplicationHandle> application = new FakeApplicationHandle();
+    sp<FakeWindowHandle> window =
+            new FakeWindowHandle(application, mDispatcher, "Fake Window", ADISPLAY_ID_DEFAULT);
+
+    mDispatcher->setInputWindows({window}, ADISPLAY_ID_DEFAULT);
+
+    NotifyMotionArgs motionArgs =
+            generateMotionArgs(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN,
+                               ADISPLAY_ID_DEFAULT);
+    mDispatcher->notifyMotion(&motionArgs);
+
+    // Window should receive motion down event.
+    window->consumeMotionDown(ADISPLAY_ID_DEFAULT);
+
+    // When device reset happens, that motion stream should be terminated with ACTION_CANCEL
+    // on the app side.
+    NotifyDeviceResetArgs args(10 /*sequenceNum*/, 20 /*eventTime*/, DEVICE_ID);
+    mDispatcher->notifyDeviceReset(&args);
+    window->consumeEvent(AINPUT_EVENT_TYPE_MOTION, AMOTION_EVENT_ACTION_CANCEL, ADISPLAY_ID_DEFAULT,
+                         0 /*expectedFlags*/);
+}
+
 /* Test InputDispatcher for MultiDisplay */
 class InputDispatcherFocusOnTwoDisplaysTest : public InputDispatcherTest {
 public:
@@ -760,25 +862,22 @@
         application1 = new FakeApplicationHandle();
         windowInPrimary = new FakeWindowHandle(application1, mDispatcher, "D_1",
                 ADISPLAY_ID_DEFAULT);
-        std::vector<sp<InputWindowHandle>> inputWindowHandles;
-        inputWindowHandles.push_back(windowInPrimary);
+
         // Set focus window for primary display, but focused display would be second one.
         mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application1);
         windowInPrimary->setFocus();
-        mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+        mDispatcher->setInputWindows({windowInPrimary}, ADISPLAY_ID_DEFAULT);
 
         application2 = new FakeApplicationHandle();
         windowInSecondary = new FakeWindowHandle(application2, mDispatcher, "D_2",
                 SECOND_DISPLAY_ID);
         // Set focus to second display window.
-        std::vector<sp<InputWindowHandle>> inputWindowHandles_Second;
-        inputWindowHandles_Second.push_back(windowInSecondary);
         // Set focus display to second one.
         mDispatcher->setFocusedDisplay(SECOND_DISPLAY_ID);
         // Set focus window for second display.
         mDispatcher->setFocusedApplication(SECOND_DISPLAY_ID, application2);
         windowInSecondary->setFocus();
-        mDispatcher->setInputWindows(inputWindowHandles_Second, SECOND_DISPLAY_ID);
+        mDispatcher->setInputWindows({windowInSecondary}, SECOND_DISPLAY_ID);
     }
 
     virtual void TearDown() {
@@ -826,9 +925,8 @@
     windowInPrimary->assertNoEvents();
     windowInSecondary->consumeKeyDown(ADISPLAY_ID_NONE);
 
-    // Remove secondary display.
-    std::vector<sp<InputWindowHandle>> noWindows;
-    mDispatcher->setInputWindows(noWindows, SECOND_DISPLAY_ID);
+    // Remove all windows in secondary display.
+    mDispatcher->setInputWindows({}, SECOND_DISPLAY_ID);
 
     // Expect old focus should receive a cancel event.
     windowInSecondary->consumeEvent(AINPUT_EVENT_TYPE_KEY, AKEY_EVENT_ACTION_UP, ADISPLAY_ID_NONE,
@@ -917,7 +1015,7 @@
         motionArgs = generateMotionArgs(
                 AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN, displayId);
         mDispatcher->notifyMotion(&motionArgs);
-
+        ASSERT_TRUE(mDispatcher->waitForIdle());
         if (expectToBeFiltered) {
             mFakePolicy->assertFilterInputEventWasCalled(motionArgs);
         } else {
@@ -932,6 +1030,7 @@
         mDispatcher->notifyKey(&keyArgs);
         keyArgs = generateKeyArgs(AKEY_EVENT_ACTION_UP);
         mDispatcher->notifyKey(&keyArgs);
+        ASSERT_TRUE(mDispatcher->waitForIdle());
 
         if (expectToBeFiltered) {
             mFakePolicy->assertFilterInputEventWasCalled(keyArgs);
@@ -988,34 +1087,31 @@
         // window.
         mUnfocusedWindow->setLayoutParamFlags(InputWindowInfo::FLAG_NOT_TOUCH_MODAL);
 
-        mWindowFocused = new FakeWindowHandle(application, mDispatcher, "Second",
-                ADISPLAY_ID_DEFAULT);
-        mWindowFocused->setFrame(Rect(50, 50, 100, 100));
-        mWindowFocused->setLayoutParamFlags(InputWindowInfo::FLAG_NOT_TOUCH_MODAL);
-        mWindowFocusedTouchPoint = 60;
+        mFocusedWindow =
+                new FakeWindowHandle(application, mDispatcher, "Second", ADISPLAY_ID_DEFAULT);
+        mFocusedWindow->setFrame(Rect(50, 50, 100, 100));
+        mFocusedWindow->setLayoutParamFlags(InputWindowInfo::FLAG_NOT_TOUCH_MODAL);
+        mFocusedWindowTouchPoint = 60;
 
         // Set focused application.
         mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
-        mWindowFocused->setFocus();
+        mFocusedWindow->setFocus();
 
         // Expect one focus window exist in display.
-        std::vector<sp<InputWindowHandle>> inputWindowHandles;
-        inputWindowHandles.push_back(mUnfocusedWindow);
-        inputWindowHandles.push_back(mWindowFocused);
-        mDispatcher->setInputWindows(inputWindowHandles, ADISPLAY_ID_DEFAULT);
+        mDispatcher->setInputWindows({mUnfocusedWindow, mFocusedWindow}, ADISPLAY_ID_DEFAULT);
     }
 
     virtual void TearDown() {
         InputDispatcherTest::TearDown();
 
         mUnfocusedWindow.clear();
-        mWindowFocused.clear();
+        mFocusedWindow.clear();
     }
 
 protected:
     sp<FakeWindowHandle> mUnfocusedWindow;
-    sp<FakeWindowHandle> mWindowFocused;
-    int32_t mWindowFocusedTouchPoint;
+    sp<FakeWindowHandle> mFocusedWindow;
+    int32_t mFocusedWindowTouchPoint;
 };
 
 // Have two windows, one with focus. Inject MotionEvent with source TOUCHSCREEN and action
@@ -1025,9 +1121,8 @@
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher,
             AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT, 20, 20))
             << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
-    // Call monitor to wait for the command queue to get flushed.
-    mDispatcher->monitor();
 
+    ASSERT_TRUE(mDispatcher->waitForIdle());
     mFakePolicy->assertOnPointerDownEquals(mUnfocusedWindow->getToken());
 }
 
@@ -1038,10 +1133,9 @@
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher,
             AINPUT_SOURCE_TRACKBALL, ADISPLAY_ID_DEFAULT, 20, 20))
             << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
-    // Call monitor to wait for the command queue to get flushed.
-    mDispatcher->monitor();
 
-    mFakePolicy->assertOnPointerDownEquals(nullptr);
+    ASSERT_TRUE(mDispatcher->waitForIdle());
+    mFakePolicy->assertOnPointerDownWasNotCalled();
 }
 
 // Have two windows, one with focus. Inject KeyEvent with action DOWN on the window that doesn't
@@ -1049,10 +1143,9 @@
 TEST_F(InputDispatcherOnPointerDownOutsideFocus, OnPointerDownOutsideFocus_NonMotionFailure) {
     ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectKeyDown(mDispatcher, ADISPLAY_ID_DEFAULT))
             << "Inject key event should return INPUT_EVENT_INJECTION_SUCCEEDED";
-    // Call monitor to wait for the command queue to get flushed.
-    mDispatcher->monitor();
 
-    mFakePolicy->assertOnPointerDownEquals(nullptr);
+    ASSERT_TRUE(mDispatcher->waitForIdle());
+    mFakePolicy->assertOnPointerDownWasNotCalled();
 }
 
 // Have two windows, one with focus. Inject MotionEvent with source TOUCHSCREEN and action
@@ -1060,14 +1153,13 @@
 // onPointerDownOutsideFocus callback.
 TEST_F(InputDispatcherOnPointerDownOutsideFocus,
         OnPointerDownOutsideFocus_OnAlreadyFocusedWindow) {
-    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED, injectMotionDown(mDispatcher,
-            AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT, mWindowFocusedTouchPoint,
-            mWindowFocusedTouchPoint))
+    ASSERT_EQ(INPUT_EVENT_INJECTION_SUCCEEDED,
+              injectMotionDown(mDispatcher, AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
+                               mFocusedWindowTouchPoint, mFocusedWindowTouchPoint))
             << "Inject motion event should return INPUT_EVENT_INJECTION_SUCCEEDED";
-    // Call monitor to wait for the command queue to get flushed.
-    mDispatcher->monitor();
 
-    mFakePolicy->assertOnPointerDownEquals(nullptr);
+    ASSERT_TRUE(mDispatcher->waitForIdle());
+    mFakePolicy->assertOnPointerDownWasNotCalled();
 }
 
 } // namespace android::inputdispatcher
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index c1c9122..d6624c9 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -1113,6 +1113,9 @@
                                classes);
     }
 
+    // Make the protected loopOnce method accessible to tests.
+    using InputReader::loopOnce;
+
 protected:
     virtual InputDevice* createDeviceLocked(int32_t deviceId, int32_t controllerNumber,
                                             const InputDeviceIdentifier& identifier,
@@ -1133,12 +1136,8 @@
 protected:
     sp<FakeInputReaderPolicy> mFakePolicy;
 
-    virtual void SetUp() {
-        mFakePolicy = new FakeInputReaderPolicy();
-    }
-    virtual void TearDown() {
-        mFakePolicy.clear();
-    }
+    virtual void SetUp() override { mFakePolicy = new FakeInputReaderPolicy(); }
+    virtual void TearDown() override { mFakePolicy.clear(); }
 };
 
 /**
@@ -1321,19 +1320,18 @@
     sp<TestInputListener> mFakeListener;
     sp<FakeInputReaderPolicy> mFakePolicy;
     std::shared_ptr<FakeEventHub> mFakeEventHub;
-    sp<InstrumentedInputReader> mReader;
+    std::unique_ptr<InstrumentedInputReader> mReader;
 
-    virtual void SetUp() {
+    virtual void SetUp() override {
         mFakeEventHub = std::make_unique<FakeEventHub>();
         mFakePolicy = new FakeInputReaderPolicy();
         mFakeListener = new TestInputListener();
 
-        mReader = new InstrumentedInputReader(mFakeEventHub, mFakePolicy, mFakeListener);
+        mReader = std::make_unique<InstrumentedInputReader>(mFakeEventHub, mFakePolicy,
+                                                            mFakeListener);
     }
 
-    virtual void TearDown() {
-        mReader.clear();
-
+    virtual void TearDown() override {
         mFakeListener.clear();
         mFakePolicy.clear();
     }
@@ -1354,16 +1352,12 @@
 
     void disableDevice(int32_t deviceId, InputDevice* device) {
         mFakePolicy->addDisabledDevice(deviceId);
-        configureDevice(InputReaderConfiguration::CHANGE_ENABLED_STATE, device);
+        mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_ENABLED_STATE);
     }
 
     void enableDevice(int32_t deviceId, InputDevice* device) {
         mFakePolicy->removeDisabledDevice(deviceId);
-        configureDevice(InputReaderConfiguration::CHANGE_ENABLED_STATE, device);
-    }
-
-    void configureDevice(uint32_t changes, InputDevice* device) {
-        device->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), changes);
+        mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_ENABLED_STATE);
     }
 
     FakeInputMapper* addDeviceWithFakeInputMapper(int32_t deviceId, int32_t controllerNumber,
@@ -1417,7 +1411,6 @@
 
     NotifyDeviceResetArgs resetArgs;
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
-    ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
     ASSERT_EQ(deviceId, resetArgs.deviceId);
 
     ASSERT_EQ(device->isEnabled(), true);
@@ -1425,7 +1418,6 @@
     mReader->loopOnce();
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
-    ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
     ASSERT_EQ(deviceId, resetArgs.deviceId);
     ASSERT_EQ(device->isEnabled(), false);
 
@@ -1438,7 +1430,6 @@
     enableDevice(deviceId, device);
     mReader->loopOnce();
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
-    ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
     ASSERT_EQ(deviceId, resetArgs.deviceId);
     ASSERT_EQ(device->isEnabled(), true);
 }
@@ -1629,7 +1620,6 @@
     FakeInputMapper* mapper = new FakeInputMapper(device, AINPUT_SOURCE_TOUCHSCREEN);
     device->addMapper(mapper);
     mReader->setNextDevice(device);
-    addDevice(deviceId, "fake", deviceClass, nullptr);
 
     const uint8_t hdmi1 = 1;
 
@@ -1637,13 +1627,21 @@
     mFakePolicy->addInputPortAssociation(DEVICE_LOCATION, hdmi1);
 
     // Add default and second display.
+    mFakePolicy->clearViewports();
     mFakePolicy->addDisplayViewport(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
             DISPLAY_ORIENTATION_0, "local:0", NO_PORT, ViewportType::VIEWPORT_INTERNAL);
     mFakePolicy->addDisplayViewport(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
             DISPLAY_ORIENTATION_0, "local:1", hdmi1, ViewportType::VIEWPORT_EXTERNAL);
     mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     mReader->loopOnce();
+
+    // Add the device, and make sure all of the callbacks are triggered.
+    // The device is added after the input port associations are processed since
+    // we do not yet support dynamic device-to-display associations.
+    ASSERT_NO_FATAL_FAILURE(addDevice(deviceId, "fake", deviceClass, nullptr));
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyConfigurationChangedWasCalled());
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled());
+    ASSERT_NO_FATAL_FAILURE(mapper->assertConfigureWasCalled());
 
     // Device should only dispatch to the specified display.
     ASSERT_EQ(deviceId, device->getId());
@@ -1652,6 +1650,7 @@
 
     // Can't dispatch event from a disabled device.
     disableDevice(deviceId, device);
+    mReader->loopOnce();
     ASSERT_FALSE(mReader->canDispatchToDisplay(deviceId, SECONDARY_DISPLAY_ID));
 }
 
@@ -1674,7 +1673,7 @@
 
     InputDevice* mDevice;
 
-    virtual void SetUp() {
+    virtual void SetUp() override {
         mFakeEventHub = std::make_unique<FakeEventHub>();
         mFakePolicy = new FakeInputReaderPolicy();
         mFakeListener = new TestInputListener();
@@ -1688,7 +1687,7 @@
                 DEVICE_CONTROLLER_NUMBER, identifier, DEVICE_CLASSES);
     }
 
-    virtual void TearDown() {
+    virtual void TearDown() override {
         delete mDevice;
 
         delete mFakeContext;
@@ -1912,7 +1911,7 @@
     FakeInputReaderContext* mFakeContext;
     InputDevice* mDevice;
 
-    virtual void SetUp() {
+    virtual void SetUp() override {
         mFakeEventHub = std::make_unique<FakeEventHub>();
         mFakePolicy = new FakeInputReaderPolicy();
         mFakeListener = new TestInputListener();
@@ -1926,7 +1925,7 @@
         mFakeEventHub->addDevice(mDevice->getId(), DEVICE_NAME, 0);
     }
 
-    virtual void TearDown() {
+    virtual void TearDown() override {
         delete mDevice;
         delete mFakeContext;
         mFakeListener.clear();
@@ -2589,7 +2588,7 @@
 
     sp<FakePointerController> mFakePointerController;
 
-    virtual void SetUp() {
+    virtual void SetUp() override {
         InputMapperTest::SetUp();
 
         mFakePointerController = new FakePointerController();
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 14ed73d..c2e1204 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -1173,6 +1173,11 @@
                 return nullptr;
             }
             int fd = resource->data[0];
+            if (!ashmem_valid(fd)) {
+                ALOGE("Supplied Ashmem memory region is invalid");
+                return nullptr;
+            }
+
             int size2 = ashmem_get_size_region(fd);
             // check size consistency
             if (size2 < static_cast<int64_t>(size)) {
diff --git a/services/sensorservice/tests/sensorservicetest.cpp b/services/sensorservice/tests/sensorservicetest.cpp
index 1cb0489..caf7f03 100644
--- a/services/sensorservice/tests/sensorservicetest.cpp
+++ b/services/sensorservice/tests/sensorservicetest.cpp
@@ -15,19 +15,20 @@
  */
 
 #include <inttypes.h>
+#include <android/hardware_buffer.h>
 #include <android/sensor.h>
 #include <sensor/Sensor.h>
 #include <sensor/SensorManager.h>
 #include <sensor/SensorEventQueue.h>
 #include <utils/Looper.h>
+#include <vndk/hardware_buffer.h>
 
 using namespace android;
 
 static nsecs_t sStartTime = 0;
 
 
-int receiver(__unused int fd, __unused int events, void* data)
-{
+int receiver(__unused int fd, __unused int events, void* data) {
     sp<SensorEventQueue> q((SensorEventQueue*)data);
     ssize_t n;
     ASensorEvent buffer[8];
@@ -59,11 +60,42 @@
     return 1;
 }
 
+void testInvalidSharedMem_NoCrash(SensorManager &mgr) {
+    AHardwareBuffer *hardwareBuffer;
+    char* buffer;
 
-int main()
-{
+    constexpr size_t kEventSize = sizeof(ASensorEvent);
+    constexpr size_t kNEvent = 4096; // enough to contain 1.5 * 800 * 2.2 events
+    constexpr size_t kMemSize = kEventSize * kNEvent;
+    AHardwareBuffer_Desc desc = {
+            .width = static_cast<uint32_t>(kMemSize),
+            .height = 1,
+            .layers = 1,
+            .format = AHARDWAREBUFFER_FORMAT_BLOB,
+            .usage = AHARDWAREBUFFER_USAGE_SENSOR_DIRECT_DATA
+                        | AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN,
+    };
+
+    AHardwareBuffer_allocate(&desc, &hardwareBuffer);
+    AHardwareBuffer_lock(hardwareBuffer, AHARDWAREBUFFER_USAGE_CPU_READ_RARELY,
+                         -1, nullptr, reinterpret_cast<void **>(&buffer));
+
+    const native_handle_t *resourceHandle = AHardwareBuffer_getNativeHandle(hardwareBuffer);
+
+    // Pass in AHardwareBuffer, but with the wrong DIRECT_CHANNEL_TYPE to see
+    // if anything in the Sensor framework crashes
+    int ret = mgr.createDirectChannel(
+            kMemSize, ASENSOR_DIRECT_CHANNEL_TYPE_SHARED_MEMORY, resourceHandle);
+
+    // Should print -22 (BAD_VALUE) and the device runtime shouldn't restart
+    printf("createInvalidDirectChannel=%d\n", ret);
+}
+
+int main() {
     SensorManager& mgr = SensorManager::getInstanceForPackage(String16("Sensor Service Test"));
 
+    testInvalidSharedMem_NoCrash(mgr);
+
     Sensor const* const* list;
     ssize_t count = mgr.getSensorList(&list);
     printf("numSensors=%d\n", int(count));
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 3d94918..d476f7b4 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -97,6 +97,10 @@
         "android.hardware.power@1.3",
         "libhidlbase",
     ],
+    // TODO (marissaw): this library is not used by surfaceflinger. This is here so
+    // the library compiled in a way that is accessible to system partition when running
+    // IMapper's VTS.
+    required: ["libgralloctypes"]
 }
 
 cc_defaults {
@@ -163,11 +167,14 @@
         "Scheduler/LayerInfo.cpp",
         "Scheduler/MessageQueue.cpp",
         "Scheduler/PhaseOffsets.cpp",
+        "Scheduler/RefreshRateConfigs.cpp",
         "Scheduler/Scheduler.cpp",
         "Scheduler/SchedulerUtils.cpp",
-        "Scheduler/VSyncDispatchTimerQueue.cpp",
         "Scheduler/Timer.cpp",
+        "Scheduler/VSyncDispatchTimerQueue.cpp",
+        "Scheduler/VSyncPredictor.cpp",
         "Scheduler/VSyncModulator.cpp",
+        "Scheduler/VSyncReactor.cpp",
         "StartPropertySetThread.cpp",
         "SurfaceFlinger.cpp",
         "SurfaceFlingerDefaultFactory.cpp",
diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index 94c4a81..054acc5 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -56,6 +56,9 @@
 
 namespace android {
 
+static constexpr float defaultMaxMasteringLuminance = 1000.0;
+static constexpr float defaultMaxContentLuminance = 1000.0;
+
 BufferLayer::BufferLayer(const LayerCreationArgs& args)
       : Layer(args),
         mTextureName(args.textureName),
@@ -184,6 +187,14 @@
         layer.source.buffer.textureName = mTextureName;
         layer.source.buffer.usePremultipliedAlpha = getPremultipledAlpha();
         layer.source.buffer.isY410BT2020 = isHdrY410();
+        bool hasSmpte2086 = mBufferInfo.mHdrMetadata.validTypes & HdrMetadata::SMPTE2086;
+        bool hasCta861_3 = mBufferInfo.mHdrMetadata.validTypes & HdrMetadata::CTA861_3;
+        layer.source.buffer.maxMasteringLuminance = hasSmpte2086
+                ? mBufferInfo.mHdrMetadata.smpte2086.maxLuminance
+                : defaultMaxMasteringLuminance;
+        layer.source.buffer.maxContentLuminance = hasCta861_3
+                ? mBufferInfo.mHdrMetadata.cta8613.maxContentLightLevel
+                : defaultMaxContentLuminance;
         // TODO: we could be more subtle with isFixedSize()
         const bool useFiltering = targetSettings.needsFiltering || mNeedsFiltering || isFixedSize();
 
diff --git a/services/surfaceflinger/BufferQueueLayer.cpp b/services/surfaceflinger/BufferQueueLayer.cpp
index d51d34b..945abd7 100644
--- a/services/surfaceflinger/BufferQueueLayer.cpp
+++ b/services/surfaceflinger/BufferQueueLayer.cpp
@@ -35,6 +35,7 @@
 BufferQueueLayer::BufferQueueLayer(const LayerCreationArgs& args) : BufferLayer(args) {}
 
 BufferQueueLayer::~BufferQueueLayer() {
+    mContentsChangedListener->abandon();
     mConsumer->abandon();
 }
 
@@ -399,8 +400,7 @@
     // Add this buffer from our internal queue tracker
     { // Autolock scope
         const nsecs_t presentTime = item.mIsAutoTimestamp ? 0 : item.mTimestamp;
-        const bool isHDR = item.mHdrMetadata.validTypes != 0;
-        mFlinger->mScheduler->recordLayerHistory(this, presentTime, isHDR);
+        mFlinger->mScheduler->recordLayerHistory(this, presentTime);
 
         Mutex::Autolock lock(mQueueItemLock);
         // Reset the frame number tracker when we receive the first buffer after
@@ -480,7 +480,9 @@
             mFlinger->getFactory().createBufferLayerConsumer(consumer, mFlinger->getRenderEngine(),
                                                              mTextureName, this);
     mConsumer->setConsumerUsageBits(getEffectiveUsage(0));
-    mConsumer->setContentsChangedListener(this);
+
+    mContentsChangedListener = new ContentsChangedListener(this);
+    mConsumer->setContentsChangedListener(mContentsChangedListener);
     mConsumer->setName(String8(mName.data(), mName.size()));
 
     // BufferQueueCore::mMaxDequeuedBufferCount is default to 1
@@ -552,4 +554,57 @@
     return layer;
 }
 
+// -----------------------------------------------------------------------
+// Interface implementation for BufferLayerConsumer::ContentsChangedListener
+// -----------------------------------------------------------------------
+
+void BufferQueueLayer::ContentsChangedListener::onFrameAvailable(const BufferItem& item) {
+    Mutex::Autolock lock(mMutex);
+    if (mBufferQueueLayer != nullptr) {
+        mBufferQueueLayer->onFrameAvailable(item);
+    }
+}
+
+void BufferQueueLayer::ContentsChangedListener::onFrameReplaced(const BufferItem& item) {
+    Mutex::Autolock lock(mMutex);
+    if (mBufferQueueLayer != nullptr) {
+        mBufferQueueLayer->onFrameReplaced(item);
+    }
+}
+
+void BufferQueueLayer::ContentsChangedListener::onSidebandStreamChanged() {
+    Mutex::Autolock lock(mMutex);
+    if (mBufferQueueLayer != nullptr) {
+        mBufferQueueLayer->onSidebandStreamChanged();
+    }
+}
+
+void BufferQueueLayer::ContentsChangedListener::onFrameDequeued(const uint64_t bufferId) {
+    Mutex::Autolock lock(mMutex);
+    if (mBufferQueueLayer != nullptr) {
+        mBufferQueueLayer->onFrameDequeued(bufferId);
+    }
+}
+
+void BufferQueueLayer::ContentsChangedListener::onFrameDetached(const uint64_t bufferId) {
+    Mutex::Autolock lock(mMutex);
+    if (mBufferQueueLayer != nullptr) {
+        mBufferQueueLayer->onFrameDetached(bufferId);
+    }
+}
+
+void BufferQueueLayer::ContentsChangedListener::onFrameCancelled(const uint64_t bufferId) {
+    Mutex::Autolock lock(mMutex);
+    if (mBufferQueueLayer != nullptr) {
+        mBufferQueueLayer->onFrameCancelled(bufferId);
+    }
+}
+
+void BufferQueueLayer::ContentsChangedListener::abandon() {
+    Mutex::Autolock lock(mMutex);
+    mBufferQueueLayer = nullptr;
+}
+
+// -----------------------------------------------------------------------
+
 } // namespace android
diff --git a/services/surfaceflinger/BufferQueueLayer.h b/services/surfaceflinger/BufferQueueLayer.h
index 1b1fccd..b040556 100644
--- a/services/surfaceflinger/BufferQueueLayer.h
+++ b/services/surfaceflinger/BufferQueueLayer.h
@@ -29,7 +29,7 @@
  * This also implements onFrameAvailable(), which notifies SurfaceFlinger
  * that new data has arrived.
  */
-class BufferQueueLayer : public BufferLayer, public BufferLayerConsumer::ContentsChangedListener {
+class BufferQueueLayer : public BufferLayer {
 public:
     // Only call while mStateLock is held
     explicit BufferQueueLayer(const LayerCreationArgs&);
@@ -84,18 +84,37 @@
     void latchPerFrameState(compositionengine::LayerFECompositionState&) const override;
     sp<Layer> createClone() override;
 
-    // -----------------------------------------------------------------------
-    // Interface implementation for BufferLayerConsumer::ContentsChangedListener
-    // -----------------------------------------------------------------------
+    void onFrameAvailable(const BufferItem& item);
+    void onFrameReplaced(const BufferItem& item);
+    void onSidebandStreamChanged();
+    void onFrameDequeued(const uint64_t bufferId);
+    void onFrameDetached(const uint64_t bufferId);
+    void onFrameCancelled(const uint64_t bufferId);
+
 protected:
     void gatherBufferInfo() override;
 
-    void onFrameAvailable(const BufferItem& item) override;
-    void onFrameReplaced(const BufferItem& item) override;
-    void onSidebandStreamChanged() override;
-    void onFrameDequeued(const uint64_t bufferId) override;
-    void onFrameDetached(const uint64_t bufferId) override;
-    void onFrameCancelled(const uint64_t bufferId) override;
+    // -----------------------------------------------------------------------
+    // Interface implementation for BufferLayerConsumer::ContentsChangedListener
+    // -----------------------------------------------------------------------
+    class ContentsChangedListener : public BufferLayerConsumer::ContentsChangedListener {
+    public:
+        ContentsChangedListener(BufferQueueLayer* bufferQueueLayer)
+              : mBufferQueueLayer(bufferQueueLayer) {}
+        void abandon();
+
+    protected:
+        void onFrameAvailable(const BufferItem& item) override;
+        void onFrameReplaced(const BufferItem& item) override;
+        void onSidebandStreamChanged() override;
+        void onFrameDequeued(const uint64_t bufferId) override;
+        void onFrameDetached(const uint64_t bufferId) override;
+        void onFrameCancelled(const uint64_t bufferId) override;
+
+    private:
+        BufferQueueLayer* mBufferQueueLayer = nullptr;
+        Mutex mMutex;
+    };
     // -----------------------------------------------------------------------
 
 public:
@@ -130,6 +149,8 @@
     // thread-safe
     std::atomic<int32_t> mQueuedFrames{0};
     std::atomic<bool> mSidebandStreamChanged{false};
+
+    sp<ContentsChangedListener> mContentsChangedListener;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/BufferStateLayer.cpp b/services/surfaceflinger/BufferStateLayer.cpp
index d68fe8e..1e471e5 100644
--- a/services/surfaceflinger/BufferStateLayer.cpp
+++ b/services/surfaceflinger/BufferStateLayer.cpp
@@ -247,8 +247,7 @@
                                            FrameTracer::FrameEvent::POST);
     mCurrentState.desiredPresentTime = desiredPresentTime;
 
-    const bool isHDR = mCurrentState.hdrMetadata.validTypes != 0;
-    mFlinger->mScheduler->recordLayerHistory(this, desiredPresentTime, isHDR);
+    mFlinger->mScheduler->recordLayerHistory(this, desiredPresentTime);
 
     return true;
 }
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
index e585769..0a70165 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
@@ -93,6 +93,13 @@
     virtual std::optional<renderengine::LayerSettings> prepareClientComposition(
             ClientCompositionTargetSettings&) = 0;
 
+    // Returns the LayerSettings used to draw shadows around a layer. It is passed
+    // to RenderEngine::drawLayers. Returns nullopt_t if the layer does not render
+    // shadows.
+    virtual std::optional<renderengine::LayerSettings> prepareShadowClientComposition(
+            const renderengine::LayerSettings& layerSettings, const Rect& displayViewport,
+            ui::Dataspace outputDataspace) = 0;
+
     // Called after the layer is displayed to update the presentation fence
     virtual void onLayerDisplayed(const sp<Fence>&) = 0;
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
index 5f42ea1..076fdad 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
@@ -272,7 +272,7 @@
     virtual bool getSkipColorTransform() const = 0;
     virtual FrameFences presentAndGetFrameFences() = 0;
     virtual std::vector<renderengine::LayerSettings> generateClientCompositionRequests(
-            bool supportsProtectedContent, Region& clearRegion) = 0;
+            bool supportsProtectedContent, Region& clearRegion, ui::Dataspace outputDataspace) = 0;
     virtual void appendRegionFlashRequests(
             const Region& flashRegion,
             std::vector<renderengine::LayerSettings>& clientCompositionLayers) = 0;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
index a2342ae..159e928 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
@@ -97,7 +97,8 @@
     bool getSkipColorTransform() const override;
     compositionengine::Output::FrameFences presentAndGetFrameFences() override;
     std::vector<renderengine::LayerSettings> generateClientCompositionRequests(
-            bool supportsProtectedContent, Region& clearRegion) override;
+            bool supportsProtectedContent, Region& clearRegion,
+            ui::Dataspace outputDataspace) override;
     void appendRegionFlashRequests(const Region&,
                                    std::vector<renderengine::LayerSettings>&) override;
     void setExpensiveRenderingExpected(bool enabled) override;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
index 3eada3c..739490f 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h
@@ -38,6 +38,10 @@
     MOCK_METHOD1(prepareClientComposition,
                  std::optional<renderengine::LayerSettings>(
                          compositionengine::LayerFE::ClientCompositionTargetSettings&));
+    MOCK_METHOD3(prepareShadowClientComposition,
+                 std::optional<renderengine::LayerSettings>(const renderengine::LayerSettings&,
+                                                            const Rect&, ui::Dataspace));
+
     MOCK_METHOD1(onLayerDisplayed, void(const sp<Fence>&));
 
     MOCK_CONST_METHOD0(getDebugName, const char*());
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
index 02e68fc..7f5bd06 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
@@ -106,8 +106,8 @@
     MOCK_METHOD0(postFramebuffer, void());
     MOCK_METHOD0(presentAndGetFrameFences, compositionengine::Output::FrameFences());
 
-    MOCK_METHOD2(generateClientCompositionRequests,
-                 std::vector<renderengine::LayerSettings>(bool, Region&));
+    MOCK_METHOD3(generateClientCompositionRequests,
+                 std::vector<renderengine::LayerSettings>(bool, Region&, ui::Dataspace));
     MOCK_METHOD2(appendRegionFlashRequests,
                  void(const Region&, std::vector<renderengine::LayerSettings>&));
     MOCK_METHOD1(setExpensiveRenderingExpected, void(bool));
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index 5f752a0..7e5a720 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -799,7 +799,8 @@
     // Generate the client composition requests for the layers on this output.
     std::vector<renderengine::LayerSettings> clientCompositionLayers =
             generateClientCompositionRequests(supportsProtectedContent,
-                                              clientCompositionDisplay.clearRegion);
+                                              clientCompositionDisplay.clearRegion,
+                                              clientCompositionDisplay.outputDataspace);
     appendRegionFlashRequests(debugRegion, clientCompositionLayers);
 
     // If we the display is secure, protected content support is enabled, and at
@@ -859,7 +860,7 @@
 }
 
 std::vector<renderengine::LayerSettings> Output::generateClientCompositionRequests(
-        bool supportsProtectedContent, Region& clearRegion) {
+        bool supportsProtectedContent, Region& clearRegion, ui::Dataspace outputDataspace) {
     std::vector<renderengine::LayerSettings> clientCompositionLayers;
     ALOGV("Rendering client layers");
 
@@ -911,6 +912,13 @@
                     layerSettings.source.solidColor = half3(0.0, 0.0, 0.0);
                     layerSettings.alpha = half(0.0);
                     layerSettings.disableBlending = true;
+                } else {
+                    std::optional<renderengine::LayerSettings> shadowLayer =
+                            layerFE.prepareShadowClientComposition(*result, outputState.viewport,
+                                                                   outputDataspace);
+                    if (shadowLayer) {
+                        clientCompositionLayers.push_back(*shadowLayer);
+                    }
                 }
 
                 layer->editState().clientCompositionTimestamp = systemTime();
diff --git a/services/surfaceflinger/CompositionEngine/tests/CallOrderStateMachineHelper.h b/services/surfaceflinger/CompositionEngine/tests/CallOrderStateMachineHelper.h
new file mode 100644
index 0000000..2675dcf
--- /dev/null
+++ b/services/surfaceflinger/CompositionEngine/tests/CallOrderStateMachineHelper.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+/**
+ * CallOrderStateMachineHelper is a helper class for setting up a compile-time
+ * checked state machine that a sequence of calls is correct for completely
+ * setting up the state for some other type.
+ *
+ * Two examples where this could be used are with setting up a "Builder" flow
+ * for initializing an instance of some type, and writing tests where the state
+ * machine sets up expectations and preconditions, calls the function under
+ * test, and then evaluations postconditions.
+ *
+ * The purpose of this helper is to offload some of the boilerplate code to
+ * simplify the actual state classes, and is also a place to document how to
+ * go about setting up the state classes.
+ *
+ * To work at compile time, the idea is that each state is a unique C++ type,
+ * and the valid transitions between states are given by member functions on
+ * those types, with those functions returning a simple value type expressing
+ * the new state to use. Illegal state transitions become a compile error because
+ * a named member function does not exist.
+ *
+ * Example usage in a test:
+ *
+ *    A two step (+ terminator step) setup process can defined using:
+ *
+ *        class Step1 : public CallOrderStateMachineHelper<TestFixtureType, Step1> {
+ *           [[nodiscard]] auto firstMockCalledWith(int value1) {
+ *              // Set up an expectation or initial state using the fixture
+ *              EXPECT_CALL(getInstance->firstMock, FirstCall(value1));
+ *              return nextState<Step2>();
+ *           }
+ *        };
+ *
+ *        class Step2 : public CallOrderStateMachineHelper<TestFixtureType, Step2> {
+ *           [[nodiscard]] auto secondMockCalledWith(int value2) {
+ *              // Set up an expectation or initial state using the fixture
+ *              EXPECT_CALL(getInstance()->secondMock, SecondCall(value2));
+ *              return nextState<StepExecute>();
+ *           }
+ *        };
+ *
+ *        class StepExecute : public CallOrderStateMachineHelper<TestFixtureType, Step3> {
+ *           void execute() {
+ *              invokeFunctionUnderTest();
+ *           }
+ *        };
+ *
+ *    Note how the non-terminator steps return by value and use [[nodiscard]] to
+ *    enforce the setup flow. Only the terminator step returns void.
+ *
+ *    This can then be used in the tests with:
+ *
+ *        Step1::make(this).firstMockCalledWith(value1)
+ *                .secondMockCalledWith(value2)
+ *                .execute);
+ *
+ *    If the test fixture defines a `verify()` helper function which returns
+ *    `Step1::make(this)`, this can be simplified to:
+ *
+ *        verify().firstMockCalledWith(value1)
+ *                .secondMockCalledWith(value2)
+ *                .execute();
+ *
+ *    This is equivalent to the following calls made by the text function:
+ *
+ *        EXPECT_CALL(firstMock, FirstCall(value1));
+ *        EXPECT_CALL(secondMock, SecondCall(value2));
+ *        invokeFunctionUnderTest();
+ */
+template <typename InstanceType, typename CurrentStateType>
+class CallOrderStateMachineHelper {
+public:
+    CallOrderStateMachineHelper() = default;
+
+    // Disallow copying
+    CallOrderStateMachineHelper(const CallOrderStateMachineHelper&) = delete;
+    CallOrderStateMachineHelper& operator=(const CallOrderStateMachineHelper&) = delete;
+
+    // Moving is intended use case.
+    CallOrderStateMachineHelper(CallOrderStateMachineHelper&&) = default;
+    CallOrderStateMachineHelper& operator=(CallOrderStateMachineHelper&&) = default;
+
+    // Using a static "Make" function means the CurrentStateType classes do not
+    // need anything other than a default no-argument constructor.
+    static CurrentStateType make(InstanceType* instance) {
+        auto helper = CurrentStateType();
+        helper.mInstance = instance;
+        return helper;
+    }
+
+    // Each non-terminal state function
+    template <typename NextStateType>
+    auto nextState() {
+        // Note: Further operations on the current state become undefined
+        // operations as the instance pointer is moved to the next state type.
+        // But that doesn't stop someone from storing an intermediate state
+        // instance as a local and possibly calling one than one member function
+        // on it. By swapping with nullptr, we at least can try to catch this
+        // this at runtime.
+        InstanceType* instance = nullptr;
+        std::swap(instance, mInstance);
+        return NextStateType::make(instance);
+    }
+
+    InstanceType* getInstance() const { return mInstance; }
+
+private:
+    InstanceType* mInstance;
+};
diff --git a/services/surfaceflinger/CompositionEngine/tests/DisplayColorProfileTest.cpp b/services/surfaceflinger/CompositionEngine/tests/DisplayColorProfileTest.cpp
index c07dfbb..21b9aa9 100644
--- a/services/surfaceflinger/CompositionEngine/tests/DisplayColorProfileTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/DisplayColorProfileTest.cpp
@@ -19,35 +19,6 @@
 #include <compositionengine/mock/CompositionEngine.h>
 #include <gtest/gtest.h>
 
-namespace android::hardware::graphics::common::V1_1 {
-
-// Note: These operator overloads need to be defined in the same namespace as
-// the values they print.
-
-std::ostream& operator<<(std::ostream& os, const RenderIntent& value) {
-    return os << toString(value) << " (" << static_cast<std::underlying_type_t<Dataspace>>(value)
-              << ")";
-}
-
-} // namespace android::hardware::graphics::common::V1_1
-
-namespace android::hardware::graphics::common::V1_2 {
-
-// Note: These operator overloads need to be defined in the same namespace as
-// the values they print.
-
-std::ostream& operator<<(std::ostream& os, const Dataspace& value) {
-    return os << toString(value) << " (" << static_cast<std::underlying_type_t<Dataspace>>(value)
-              << ")";
-}
-
-std::ostream& operator<<(std::ostream& os, const ColorMode& value) {
-    return os << toString(value) << " (" << static_cast<std::underlying_type_t<Dataspace>>(value)
-              << ")";
-}
-
-} // namespace android::hardware::graphics::common::V1_2
-
 namespace android::compositionengine {
 namespace {
 
diff --git a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
index 4d71d43..3a4df74 100644
--- a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
@@ -21,8 +21,10 @@
 #include <compositionengine/DisplaySurface.h>
 #include <compositionengine/RenderSurfaceCreationArgs.h>
 #include <compositionengine/impl/Display.h>
+#include <compositionengine/impl/RenderSurface.h>
 #include <compositionengine/mock/CompositionEngine.h>
 #include <compositionengine/mock/DisplayColorProfile.h>
+#include <compositionengine/mock/DisplaySurface.h>
 #include <compositionengine/mock/Layer.h>
 #include <compositionengine/mock/LayerFE.h>
 #include <compositionengine/mock/NativeWindow.h>
@@ -39,6 +41,8 @@
 
 using testing::_;
 using testing::DoAll;
+using testing::InSequence;
+using testing::NiceMock;
 using testing::Return;
 using testing::ReturnRef;
 using testing::Sequence;
@@ -46,6 +50,8 @@
 using testing::StrictMock;
 
 constexpr DisplayId DEFAULT_DISPLAY_ID = DisplayId{42};
+constexpr int32_t DEFAULT_DISPLAY_WIDTH = 1920;
+constexpr int32_t DEFAULT_DISPLAY_HEIGHT = 1080;
 
 struct DisplayTest : public testing::Test {
     class Display : public impl::Display {
@@ -768,5 +774,59 @@
     nonHwcDisplay->finishFrame(refreshArgs);
 }
 
+/*
+ * Display functional tests
+ */
+
+struct DisplayFunctionalTest : public testing::Test {
+    class Display : public impl::Display {
+    public:
+        explicit Display(const compositionengine::DisplayCreationArgs& args)
+              : impl::Display(args) {}
+
+        using impl::Display::injectOutputLayerForTest;
+        virtual void injectOutputLayerForTest(std::unique_ptr<compositionengine::OutputLayer>) = 0;
+    };
+
+    static std::shared_ptr<Display> createDisplay(
+            const compositionengine::CompositionEngine& compositionEngine,
+            compositionengine::DisplayCreationArgs&& args) {
+        return impl::createDisplayTemplated<Display>(compositionEngine, args);
+    }
+
+    DisplayFunctionalTest() {
+        EXPECT_CALL(mCompositionEngine, getHwComposer()).WillRepeatedly(ReturnRef(mHwComposer));
+
+        mDisplay->setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
+    }
+
+    NiceMock<android::mock::HWComposer> mHwComposer;
+    NiceMock<Hwc2::mock::PowerAdvisor> mPowerAdvisor;
+    NiceMock<mock::CompositionEngine> mCompositionEngine;
+    sp<mock::NativeWindow> mNativeWindow = new NiceMock<mock::NativeWindow>();
+    sp<mock::DisplaySurface> mDisplaySurface = new NiceMock<mock::DisplaySurface>();
+    std::shared_ptr<Display> mDisplay = createDisplay(mCompositionEngine,
+                                                      DisplayCreationArgsBuilder()
+                                                              .setDisplayId(DEFAULT_DISPLAY_ID)
+                                                              .setPowerAdvisor(&mPowerAdvisor)
+                                                              .build());
+    impl::RenderSurface* mRenderSurface =
+            new impl::RenderSurface{mCompositionEngine, *mDisplay,
+                                    RenderSurfaceCreationArgs{DEFAULT_DISPLAY_WIDTH,
+                                                              DEFAULT_DISPLAY_HEIGHT, mNativeWindow,
+                                                              mDisplaySurface}};
+};
+
+TEST_F(DisplayFunctionalTest, postFramebufferCriticalCallsAreOrdered) {
+    InSequence seq;
+
+    mDisplay->editState().isEnabled = true;
+
+    EXPECT_CALL(mHwComposer, presentAndGetReleaseFences(_));
+    EXPECT_CALL(*mDisplaySurface, onFrameCommitted());
+
+    mDisplay->postFramebuffer();
+}
+
 } // namespace
 } // namespace android::compositionengine
diff --git a/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h b/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
index 5cfec77..364661b 100644
--- a/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
+++ b/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
@@ -81,6 +81,11 @@
     MOCK_CONST_METHOD1(getColorModes, std::vector<ui::ColorMode>(DisplayId));
     MOCK_METHOD3(setActiveColorMode, status_t(DisplayId, ui::ColorMode, ui::RenderIntent));
     MOCK_CONST_METHOD0(isUsingVrComposer, bool());
+    MOCK_CONST_METHOD1(isVsyncPeriodSwitchSupported, bool(DisplayId));
+    MOCK_CONST_METHOD1(getDisplayVsyncPeriod, nsecs_t(DisplayId));
+    MOCK_METHOD4(setActiveConfigWithConstraints,
+                 status_t(DisplayId, size_t, const HWC2::VsyncPeriodChangeConstraints&,
+                          HWC2::VsyncPeriodChangeTimeline*));
 
     MOCK_CONST_METHOD1(dump, void(std::string&));
     MOCK_CONST_METHOD0(getComposer, android::Hwc2::Composer*());
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
index 8db8fd4..37b62d8 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
@@ -16,6 +16,7 @@
 
 #include <cmath>
 
+#include <android-base/stringprintf.h>
 #include <compositionengine/LayerFECompositionState.h>
 #include <compositionengine/impl/Output.h>
 #include <compositionengine/impl/OutputCompositionState.h>
@@ -31,6 +32,8 @@
 #include <ui/Rect.h>
 #include <ui/Region.h>
 
+#include "CallOrderStateMachineHelper.h"
+#include "MockHWC2.h"
 #include "RegionMatcher.h"
 #include "TransformMatcher.h"
 
@@ -38,8 +41,16 @@
 namespace {
 
 using testing::_;
+using testing::ByMove;
+using testing::DoAll;
+using testing::Eq;
+using testing::InSequence;
+using testing::Mock;
+using testing::Property;
+using testing::Ref;
 using testing::Return;
 using testing::ReturnRef;
+using testing::SetArgPointee;
 using testing::StrictMock;
 
 constexpr auto TR_IDENT = 0u;
@@ -49,6 +60,34 @@
 const mat4 kNonIdentityHalf = mat4() * 0.5;
 const mat4 kNonIdentityQuarter = mat4() * 0.25;
 
+constexpr OutputColorSetting kVendorSpecifiedOutputColorSetting =
+        static_cast<OutputColorSetting>(0x100);
+
+struct OutputPartialMockBase : public impl::Output {
+    // compositionengine::Output overrides
+    const OutputCompositionState& getState() const override { return mState; }
+    OutputCompositionState& editState() override { return mState; }
+
+    // Use mocks for all the remaining virtual functions
+    // not implemented by the base implementation class.
+    MOCK_CONST_METHOD0(getOutputLayerCount, size_t());
+    MOCK_CONST_METHOD1(getOutputLayerOrderedByZByIndex, compositionengine::OutputLayer*(size_t));
+    MOCK_METHOD3(ensureOutputLayer,
+                 compositionengine::OutputLayer*(std::optional<size_t>,
+                                                 const std::shared_ptr<compositionengine::Layer>&,
+                                                 const sp<LayerFE>&));
+    MOCK_METHOD0(finalizePendingOutputLayers, void());
+    MOCK_METHOD0(clearOutputLayers, void());
+    MOCK_CONST_METHOD1(dumpState, void(std::string&));
+    MOCK_CONST_METHOD0(getCompositionEngine, const CompositionEngine&());
+    MOCK_METHOD2(injectOutputLayerForTest,
+                 compositionengine::OutputLayer*(const std::shared_ptr<compositionengine::Layer>&,
+                                                 const sp<LayerFE>&));
+    MOCK_METHOD1(injectOutputLayerForTest, void(std::unique_ptr<OutputLayer>));
+
+    impl::OutputCompositionState mState;
+};
+
 struct OutputTest : public testing::Test {
     class Output : public impl::Output {
     public:
@@ -77,8 +116,70 @@
     std::shared_ptr<Output> mOutput = createOutput(mCompositionEngine);
 };
 
+// Extension of the base test useful for checking interactions with the LayerFE
+// functions to latch composition state.
+struct OutputLatchFEStateTest : public OutputTest {
+    OutputLatchFEStateTest() {
+        EXPECT_CALL(*mOutputLayer1, getLayer()).WillRepeatedly(ReturnRef(mLayer1));
+        EXPECT_CALL(*mOutputLayer2, getLayer()).WillRepeatedly(ReturnRef(mLayer2));
+        EXPECT_CALL(*mOutputLayer3, getLayer()).WillRepeatedly(ReturnRef(mLayer3));
+
+        EXPECT_CALL(*mOutputLayer1, getLayerFE()).WillRepeatedly(ReturnRef(mLayer1FE));
+        EXPECT_CALL(*mOutputLayer2, getLayerFE()).WillRepeatedly(ReturnRef(mLayer2FE));
+        EXPECT_CALL(*mOutputLayer3, getLayerFE()).WillRepeatedly(ReturnRef(mLayer3FE));
+
+        EXPECT_CALL(mLayer1, editFEState()).WillRepeatedly(ReturnRef(mLayer1FEState));
+        EXPECT_CALL(mLayer2, editFEState()).WillRepeatedly(ReturnRef(mLayer2FEState));
+        EXPECT_CALL(mLayer3, editFEState()).WillRepeatedly(ReturnRef(mLayer3FEState));
+    }
+
+    void injectLayer(std::unique_ptr<mock::OutputLayer> layer) {
+        mOutput->injectOutputLayerForTest(std::unique_ptr<OutputLayer>(layer.release()));
+    }
+
+    std::unique_ptr<mock::OutputLayer> mOutputLayer1{new StrictMock<mock::OutputLayer>};
+    std::unique_ptr<mock::OutputLayer> mOutputLayer2{new StrictMock<mock::OutputLayer>};
+    std::unique_ptr<mock::OutputLayer> mOutputLayer3{new StrictMock<mock::OutputLayer>};
+
+    StrictMock<mock::Layer> mLayer1;
+    StrictMock<mock::Layer> mLayer2;
+    StrictMock<mock::Layer> mLayer3;
+
+    StrictMock<mock::LayerFE> mLayer1FE;
+    StrictMock<mock::LayerFE> mLayer2FE;
+    StrictMock<mock::LayerFE> mLayer3FE;
+
+    LayerFECompositionState mLayer1FEState;
+    LayerFECompositionState mLayer2FEState;
+    LayerFECompositionState mLayer3FEState;
+};
+
 const Rect OutputTest::kDefaultDisplaySize{100, 200};
 
+using ColorProfile = compositionengine::Output::ColorProfile;
+
+void dumpColorProfile(ColorProfile profile, std::string& result, const char* name) {
+    android::base::StringAppendF(&result, "%s (%s[%d] %s[%d] %s[%d] %s[%d]) ", name,
+                                 toString(profile.mode).c_str(), profile.mode,
+                                 toString(profile.dataspace).c_str(), profile.dataspace,
+                                 toString(profile.renderIntent).c_str(), profile.renderIntent,
+                                 toString(profile.colorSpaceAgnosticDataspace).c_str(),
+                                 profile.colorSpaceAgnosticDataspace);
+}
+
+// Checks for a ColorProfile match
+MATCHER_P(ColorProfileEq, expected, "") {
+    std::string buf;
+    buf.append("ColorProfiles are not equal\n");
+    dumpColorProfile(expected, buf, "expected value");
+    dumpColorProfile(arg, buf, "actual value");
+    *result_listener << buf;
+
+    return (expected.mode == arg.mode) && (expected.dataspace == arg.dataspace) &&
+            (expected.renderIntent == arg.renderIntent) &&
+            (expected.colorSpaceAgnosticDataspace == arg.colorSpaceAgnosticDataspace);
+}
+
 /*
  * Basic construction
  */
@@ -268,10 +369,12 @@
 }
 
 /*
- * Output::setColorMode
+ * Output::setColorProfile
  */
 
-TEST_F(OutputTest, setColorModeSetsStateAndDirtiesOutputIfChanged) {
+using OutputSetColorProfileTest = OutputTest;
+
+TEST_F(OutputSetColorProfileTest, setsStateAndDirtiesOutputIfChanged) {
     using ColorProfile = Output::ColorProfile;
 
     EXPECT_CALL(*mDisplayColorProfile,
@@ -292,7 +395,7 @@
     EXPECT_THAT(mOutput->getState().dirtyRegion, RegionEq(Region(kDefaultDisplaySize)));
 }
 
-TEST_F(OutputTest, setColorModeDoesNothingIfNoChange) {
+TEST_F(OutputSetColorProfileTest, doesNothingIfNoChange) {
     using ColorProfile = Output::ColorProfile;
 
     EXPECT_CALL(*mDisplayColorProfile,
@@ -483,26 +586,163 @@
 }
 
 /*
+ * Output::setReleasedLayers()
+ */
+
+using OutputSetReleasedLayersTest = OutputTest;
+
+TEST_F(OutputSetReleasedLayersTest, setReleasedLayersTakesGivenLayers) {
+    sp<StrictMock<mock::LayerFE>> layer1FE{new StrictMock<mock::LayerFE>()};
+    sp<StrictMock<mock::LayerFE>> layer2FE{new StrictMock<mock::LayerFE>()};
+    sp<StrictMock<mock::LayerFE>> layer3FE{new StrictMock<mock::LayerFE>()};
+
+    Output::ReleasedLayers layers;
+    layers.push_back(layer1FE);
+    layers.push_back(layer2FE);
+    layers.push_back(layer3FE);
+
+    mOutput->setReleasedLayers(std::move(layers));
+
+    const auto& setLayers = mOutput->getReleasedLayersForTest();
+    ASSERT_EQ(3u, setLayers.size());
+    ASSERT_EQ(layer1FE.get(), setLayers[0].promote().get());
+    ASSERT_EQ(layer2FE.get(), setLayers[1].promote().get());
+    ASSERT_EQ(layer3FE.get(), setLayers[2].promote().get());
+}
+
+/*
+ * Output::updateLayerStateFromFE()
+ */
+
+using OutputUpdateLayerStateFromFETest = OutputLatchFEStateTest;
+
+TEST_F(OutputUpdateLayerStateFromFETest, handlesNoOutputLayerCase) {
+    CompositionRefreshArgs refreshArgs;
+
+    mOutput->updateLayerStateFromFE(refreshArgs);
+}
+
+TEST_F(OutputUpdateLayerStateFromFETest, latchesContentStateForAllContainedLayers) {
+    EXPECT_CALL(mLayer1FE,
+                latchCompositionState(Ref(mLayer1FEState), LayerFE::StateSubset::Content));
+    EXPECT_CALL(mLayer2FE,
+                latchCompositionState(Ref(mLayer2FEState), LayerFE::StateSubset::Content));
+    EXPECT_CALL(mLayer3FE,
+                latchCompositionState(Ref(mLayer3FEState), LayerFE::StateSubset::Content));
+
+    // Note: Must be performed after any expectations on these mocks
+    injectLayer(std::move(mOutputLayer1));
+    injectLayer(std::move(mOutputLayer2));
+    injectLayer(std::move(mOutputLayer3));
+
+    CompositionRefreshArgs refreshArgs;
+    refreshArgs.updatingGeometryThisFrame = false;
+
+    mOutput->updateLayerStateFromFE(refreshArgs);
+}
+
+TEST_F(OutputUpdateLayerStateFromFETest, latchesGeometryAndContentStateForAllContainedLayers) {
+    EXPECT_CALL(mLayer1FE,
+                latchCompositionState(Ref(mLayer1FEState),
+                                      LayerFE::StateSubset::GeometryAndContent));
+    EXPECT_CALL(mLayer2FE,
+                latchCompositionState(Ref(mLayer2FEState),
+                                      LayerFE::StateSubset::GeometryAndContent));
+    EXPECT_CALL(mLayer3FE,
+                latchCompositionState(Ref(mLayer3FEState),
+                                      LayerFE::StateSubset::GeometryAndContent));
+
+    // Note: Must be performed after any expectations on these mocks
+    injectLayer(std::move(mOutputLayer1));
+    injectLayer(std::move(mOutputLayer2));
+    injectLayer(std::move(mOutputLayer3));
+
+    CompositionRefreshArgs refreshArgs;
+    refreshArgs.updatingGeometryThisFrame = true;
+
+    mOutput->updateLayerStateFromFE(refreshArgs);
+}
+
+/*
  * Output::updateAndWriteCompositionState()
  */
 
-TEST_F(OutputTest, updateAndWriteCompositionState_takesEarlyOutIfNotEnabled) {
-    mOutput->editState().isEnabled = false;
+using OutputUpdateAndWriteCompositionStateTest = OutputLatchFEStateTest;
+
+TEST_F(OutputUpdateAndWriteCompositionStateTest, doesNothingIfLayers) {
+    mOutput->editState().isEnabled = true;
 
     CompositionRefreshArgs args;
     mOutput->updateAndWriteCompositionState(args);
 }
 
-TEST_F(OutputTest, updateAndWriteCompositionState_updatesLayers) {
-    mOutput->editState().isEnabled = true;
-    mock::OutputLayer* outputLayer = new StrictMock<mock::OutputLayer>();
-    mOutput->injectOutputLayerForTest(std::unique_ptr<OutputLayer>(outputLayer));
+TEST_F(OutputUpdateAndWriteCompositionStateTest, doesNothingIfOutputNotEnabled) {
+    mOutput->editState().isEnabled = false;
 
-    EXPECT_CALL(*outputLayer, updateCompositionState(true, true)).Times(1);
-    EXPECT_CALL(*outputLayer, writeStateToHWC(true)).Times(1);
+    injectLayer(std::move(mOutputLayer1));
+    injectLayer(std::move(mOutputLayer2));
+    injectLayer(std::move(mOutputLayer3));
+
+    CompositionRefreshArgs args;
+    mOutput->updateAndWriteCompositionState(args);
+}
+
+TEST_F(OutputUpdateAndWriteCompositionStateTest, updatesLayerContentForAllLayers) {
+    EXPECT_CALL(*mOutputLayer1, updateCompositionState(false, false));
+    EXPECT_CALL(*mOutputLayer1, writeStateToHWC(false));
+    EXPECT_CALL(*mOutputLayer2, updateCompositionState(false, false));
+    EXPECT_CALL(*mOutputLayer2, writeStateToHWC(false));
+    EXPECT_CALL(*mOutputLayer3, updateCompositionState(false, false));
+    EXPECT_CALL(*mOutputLayer3, writeStateToHWC(false));
+
+    injectLayer(std::move(mOutputLayer1));
+    injectLayer(std::move(mOutputLayer2));
+    injectLayer(std::move(mOutputLayer3));
+
+    mOutput->editState().isEnabled = true;
+
+    CompositionRefreshArgs args;
+    args.updatingGeometryThisFrame = false;
+    args.devOptForceClientComposition = false;
+    mOutput->updateAndWriteCompositionState(args);
+}
+
+TEST_F(OutputUpdateAndWriteCompositionStateTest, updatesLayerGeometryAndContentForAllLayers) {
+    EXPECT_CALL(*mOutputLayer1, updateCompositionState(true, false));
+    EXPECT_CALL(*mOutputLayer1, writeStateToHWC(true));
+    EXPECT_CALL(*mOutputLayer2, updateCompositionState(true, false));
+    EXPECT_CALL(*mOutputLayer2, writeStateToHWC(true));
+    EXPECT_CALL(*mOutputLayer3, updateCompositionState(true, false));
+    EXPECT_CALL(*mOutputLayer3, writeStateToHWC(true));
+
+    injectLayer(std::move(mOutputLayer1));
+    injectLayer(std::move(mOutputLayer2));
+    injectLayer(std::move(mOutputLayer3));
+
+    mOutput->editState().isEnabled = true;
 
     CompositionRefreshArgs args;
     args.updatingGeometryThisFrame = true;
+    args.devOptForceClientComposition = false;
+    mOutput->updateAndWriteCompositionState(args);
+}
+
+TEST_F(OutputUpdateAndWriteCompositionStateTest, forcesClientCompositionForAllLayers) {
+    EXPECT_CALL(*mOutputLayer1, updateCompositionState(false, true));
+    EXPECT_CALL(*mOutputLayer1, writeStateToHWC(false));
+    EXPECT_CALL(*mOutputLayer2, updateCompositionState(false, true));
+    EXPECT_CALL(*mOutputLayer2, writeStateToHWC(false));
+    EXPECT_CALL(*mOutputLayer3, updateCompositionState(false, true));
+    EXPECT_CALL(*mOutputLayer3, writeStateToHWC(false));
+
+    injectLayer(std::move(mOutputLayer1));
+    injectLayer(std::move(mOutputLayer2));
+    injectLayer(std::move(mOutputLayer3));
+
+    mOutput->editState().isEnabled = true;
+
+    CompositionRefreshArgs args;
+    args.updatingGeometryThisFrame = false;
     args.devOptForceClientComposition = true;
     mOutput->updateAndWriteCompositionState(args);
 }
@@ -512,33 +752,10 @@
  */
 
 struct OutputPrepareFrameTest : public testing::Test {
-    struct OutputPartialMock : public impl::Output {
-        // Sets up the helper functions called by prepareFrame to use a mock
-        // implementations.
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
         MOCK_METHOD0(chooseCompositionStrategy, void());
-
-        // compositionengine::Output overrides
-        const OutputCompositionState& getState() const override { return mState; }
-        OutputCompositionState& editState() override { return mState; }
-
-        // These need implementations though are not expected to be called.
-        MOCK_CONST_METHOD0(getOutputLayerCount, size_t());
-        MOCK_CONST_METHOD1(getOutputLayerOrderedByZByIndex,
-                           compositionengine::OutputLayer*(size_t));
-        MOCK_METHOD3(ensureOutputLayer,
-                     compositionengine::OutputLayer*(
-                             std::optional<size_t>,
-                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
-        MOCK_METHOD0(finalizePendingOutputLayers, void());
-        MOCK_METHOD0(clearOutputLayers, void());
-        MOCK_CONST_METHOD1(dumpState, void(std::string&));
-        MOCK_CONST_METHOD0(getCompositionEngine, const CompositionEngine&());
-        MOCK_METHOD2(injectOutputLayerForTest,
-                     compositionengine::OutputLayer*(
-                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
-        MOCK_METHOD1(injectOutputLayerForTest, void(std::unique_ptr<OutputLayer>));
-
-        impl::OutputCompositionState mState;
     };
 
     OutputPrepareFrameTest() {
@@ -586,6 +803,1867 @@
 }
 
 /*
+ * Output::prepare()
+ */
+
+struct OutputPrepareTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD2(rebuildLayerStacks,
+                     void(const compositionengine::CompositionRefreshArgs&,
+                          compositionengine::LayerFESet&));
+    };
+
+    StrictMock<OutputPartialMock> mOutput;
+    CompositionRefreshArgs mRefreshArgs;
+    LayerFESet mGeomSnapshots;
+};
+
+TEST_F(OutputPrepareTest, justInvokesRebuildLayerStacks) {
+    InSequence seq;
+    EXPECT_CALL(mOutput, rebuildLayerStacks(Ref(mRefreshArgs), Ref(mGeomSnapshots)));
+
+    mOutput.prepare(mRefreshArgs, mGeomSnapshots);
+}
+
+/*
+ * Output::rebuildLayerStacks()
+ */
+
+struct OutputRebuildLayerStacksTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD2(collectVisibleLayers,
+                     void(const compositionengine::CompositionRefreshArgs&,
+                          compositionengine::Output::CoverageState&));
+    };
+
+    OutputRebuildLayerStacksTest() {
+        mOutput.mState.isEnabled = true;
+        mOutput.mState.transform = kIdentityTransform;
+        mOutput.mState.bounds = kOutputBounds;
+
+        mRefreshArgs.updatingOutputGeometryThisFrame = true;
+
+        mCoverageAboveCoveredLayersToSet = Region(Rect(0, 0, 10, 10));
+
+        EXPECT_CALL(mOutput, collectVisibleLayers(Ref(mRefreshArgs), _))
+                .WillRepeatedly(Invoke(this, &OutputRebuildLayerStacksTest::setTestCoverageValues));
+    }
+
+    void setTestCoverageValues(const CompositionRefreshArgs&,
+                               compositionengine::Output::CoverageState& state) {
+        state.aboveCoveredLayers = mCoverageAboveCoveredLayersToSet;
+        state.aboveOpaqueLayers = mCoverageAboveOpaqueLayersToSet;
+        state.dirtyRegion = mCoverageDirtyRegionToSet;
+    }
+
+    static const ui::Transform kIdentityTransform;
+    static const ui::Transform kRotate90Transform;
+    static const Rect kOutputBounds;
+
+    StrictMock<OutputPartialMock> mOutput;
+    CompositionRefreshArgs mRefreshArgs;
+    LayerFESet mGeomSnapshots;
+    Region mCoverageAboveCoveredLayersToSet;
+    Region mCoverageAboveOpaqueLayersToSet;
+    Region mCoverageDirtyRegionToSet;
+};
+
+const ui::Transform OutputRebuildLayerStacksTest::kIdentityTransform{TR_IDENT, 1920, 1080};
+const ui::Transform OutputRebuildLayerStacksTest::kRotate90Transform{TR_ROT_90, 1920, 1080};
+const Rect OutputRebuildLayerStacksTest::kOutputBounds{0, 0, 1920, 1080};
+
+TEST_F(OutputRebuildLayerStacksTest, doesNothingIfNotEnabled) {
+    mOutput.mState.isEnabled = false;
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+}
+
+TEST_F(OutputRebuildLayerStacksTest, doesNothingIfNotUpdatingGeometryThisFrame) {
+    mRefreshArgs.updatingOutputGeometryThisFrame = false;
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+}
+
+TEST_F(OutputRebuildLayerStacksTest, computesUndefinedRegionWithNoRotationAndFullCoverage) {
+    mOutput.mState.transform = kIdentityTransform;
+
+    mCoverageAboveOpaqueLayersToSet = Region(Rect(0, 0, 1920, 1080));
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+
+    EXPECT_THAT(mOutput.mState.undefinedRegion, RegionEq(Region(Rect(0, 0, 0, 0))));
+}
+
+TEST_F(OutputRebuildLayerStacksTest, computesUndefinedRegionWithNoRotationAndPartialCoverage) {
+    mOutput.mState.transform = kIdentityTransform;
+
+    mCoverageAboveOpaqueLayersToSet = Region(Rect(0, 0, 960, 1080));
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+
+    EXPECT_THAT(mOutput.mState.undefinedRegion, RegionEq(Region(Rect(960, 0, 1920, 1080))));
+}
+
+TEST_F(OutputRebuildLayerStacksTest, computesUndefinedRegionWith90RotationAndFullCoverage) {
+    mOutput.mState.transform = kRotate90Transform;
+
+    mCoverageAboveOpaqueLayersToSet = Region(Rect(0, 0, 1080, 1920));
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+
+    EXPECT_THAT(mOutput.mState.undefinedRegion, RegionEq(Region(Rect(0, 0, 0, 0))));
+}
+
+TEST_F(OutputRebuildLayerStacksTest, computesUndefinedRegionWith90RotationAndPartialCoverage) {
+    mOutput.mState.transform = kRotate90Transform;
+
+    mCoverageAboveOpaqueLayersToSet = Region(Rect(0, 0, 1080, 960));
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+
+    EXPECT_THAT(mOutput.mState.undefinedRegion, RegionEq(Region(Rect(0, 0, 960, 1080))));
+}
+
+TEST_F(OutputRebuildLayerStacksTest, addsToDirtyRegionWithNoRotation) {
+    mOutput.mState.transform = kIdentityTransform;
+    mOutput.mState.dirtyRegion = Region(Rect(960, 0, 1920, 1080));
+
+    mCoverageDirtyRegionToSet = Region(Rect(0, 0, 960, 1080));
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+
+    EXPECT_THAT(mOutput.mState.dirtyRegion, RegionEq(Region(Rect(0, 0, 1920, 1080))));
+}
+
+TEST_F(OutputRebuildLayerStacksTest, addsToDirtyRegionWith90Rotation) {
+    mOutput.mState.transform = kRotate90Transform;
+    mOutput.mState.dirtyRegion = Region(Rect(0, 960, 1080, 1920));
+
+    mCoverageDirtyRegionToSet = Region(Rect(0, 0, 1080, 960));
+
+    mOutput.rebuildLayerStacks(mRefreshArgs, mGeomSnapshots);
+
+    EXPECT_THAT(mOutput.mState.dirtyRegion, RegionEq(Region(Rect(0, 0, 1080, 1920))));
+}
+
+/*
+ * Output::collectVisibleLayers()
+ */
+
+struct OutputCollectVisibleLayersTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD2(ensureOutputLayerIfVisible,
+                     void(std::shared_ptr<compositionengine::Layer>,
+                          compositionengine::Output::CoverageState&));
+        MOCK_METHOD1(setReleasedLayers, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD0(finalizePendingOutputLayers, void());
+    };
+
+    struct Layer {
+        Layer() {
+            EXPECT_CALL(outputLayer, getState()).WillRepeatedly(ReturnRef(outputLayerState));
+            EXPECT_CALL(outputLayer, editState()).WillRepeatedly(ReturnRef(outputLayerState));
+        }
+
+        StrictMock<mock::OutputLayer> outputLayer;
+        std::shared_ptr<StrictMock<mock::Layer>> layer{new StrictMock<mock::Layer>()};
+        impl::OutputLayerCompositionState outputLayerState;
+    };
+
+    OutputCollectVisibleLayersTest() {
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(3));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(0))
+                .WillRepeatedly(Return(&mLayer1.outputLayer));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(1))
+                .WillRepeatedly(Return(&mLayer2.outputLayer));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(2))
+                .WillRepeatedly(Return(&mLayer3.outputLayer));
+
+        mRefreshArgs.layers.push_back(mLayer1.layer);
+        mRefreshArgs.layers.push_back(mLayer2.layer);
+        mRefreshArgs.layers.push_back(mLayer3.layer);
+    }
+
+    StrictMock<OutputPartialMock> mOutput;
+    CompositionRefreshArgs mRefreshArgs;
+    LayerFESet mGeomSnapshots;
+    Output::CoverageState mCoverageState{mGeomSnapshots};
+    Layer mLayer1;
+    Layer mLayer2;
+    Layer mLayer3;
+};
+
+TEST_F(OutputCollectVisibleLayersTest, doesMinimalWorkIfNoLayers) {
+    mRefreshArgs.layers.clear();
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(0));
+
+    EXPECT_CALL(mOutput, setReleasedLayers(Ref(mRefreshArgs)));
+    EXPECT_CALL(mOutput, finalizePendingOutputLayers());
+
+    mOutput.collectVisibleLayers(mRefreshArgs, mCoverageState);
+}
+
+TEST_F(OutputCollectVisibleLayersTest, processesCandidateLayersReversedAndSetsOutputLayerZ) {
+    // Enforce a call order sequence for this test.
+    InSequence seq;
+
+    // Layer coverage is evaluated from front to back!
+    EXPECT_CALL(mOutput, ensureOutputLayerIfVisible(Eq(mLayer3.layer), Ref(mCoverageState)));
+    EXPECT_CALL(mOutput, ensureOutputLayerIfVisible(Eq(mLayer2.layer), Ref(mCoverageState)));
+    EXPECT_CALL(mOutput, ensureOutputLayerIfVisible(Eq(mLayer1.layer), Ref(mCoverageState)));
+
+    EXPECT_CALL(mOutput, setReleasedLayers(Ref(mRefreshArgs)));
+    EXPECT_CALL(mOutput, finalizePendingOutputLayers());
+
+    mOutput.collectVisibleLayers(mRefreshArgs, mCoverageState);
+
+    // Ensure all output layers have been assigned a simple/flattened z-order.
+    EXPECT_EQ(0u, mLayer1.outputLayerState.z);
+    EXPECT_EQ(1u, mLayer2.outputLayerState.z);
+    EXPECT_EQ(2u, mLayer3.outputLayerState.z);
+}
+
+/*
+ * Output::ensureOutputLayerIfVisible()
+ */
+
+struct OutputEnsureOutputLayerIfVisibleTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_CONST_METHOD1(belongsInOutput, bool(const compositionengine::Layer*));
+        MOCK_CONST_METHOD1(getOutputLayerOrderedByZByIndex, OutputLayer*(size_t));
+        MOCK_METHOD3(ensureOutputLayer,
+                     compositionengine::OutputLayer*(
+                             std::optional<size_t>,
+                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
+    };
+
+    OutputEnsureOutputLayerIfVisibleTest() {
+        EXPECT_CALL(*mLayer, getLayerFE()).WillRepeatedly(Return(mLayerFE));
+        EXPECT_CALL(*mLayer, getFEState()).WillRepeatedly(ReturnRef(mLayerFEState));
+        EXPECT_CALL(*mLayer, editFEState()).WillRepeatedly(ReturnRef(mLayerFEState));
+
+        EXPECT_CALL(mOutput, belongsInOutput(mLayer.get())).WillRepeatedly(Return(true));
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(1));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(0u))
+                .WillRepeatedly(Return(&mOutputLayer));
+
+        EXPECT_CALL(mOutputLayer, getState()).WillRepeatedly(ReturnRef(mOutputLayerState));
+        EXPECT_CALL(mOutputLayer, editState()).WillRepeatedly(ReturnRef(mOutputLayerState));
+        EXPECT_CALL(mOutputLayer, getLayer()).WillRepeatedly(ReturnRef(*mLayer.get()));
+
+        mOutput.mState.bounds = Rect(0, 0, 200, 300);
+        mOutput.mState.viewport = Rect(0, 0, 200, 300);
+        mOutput.mState.transform = ui::Transform(TR_IDENT, 200, 300);
+
+        mLayerFEState.isVisible = true;
+        mLayerFEState.isOpaque = true;
+        mLayerFEState.contentDirty = true;
+        mLayerFEState.geomLayerBounds = FloatRect{0, 0, 100, 200};
+        mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+        mLayerFEState.transparentRegionHint = Region(Rect(0, 0, 100, 100));
+
+        mOutputLayerState.visibleRegion = Region(Rect(0, 0, 50, 200));
+        mOutputLayerState.coveredRegion = Region(Rect(50, 0, 100, 200));
+
+        mGeomSnapshots.insert(mLayerFE);
+    }
+
+    static const Region kEmptyRegion;
+    static const Region kFullBoundsNoRotation;
+    static const Region kRightHalfBoundsNoRotation;
+    static const Region kLowerHalfBoundsNoRotation;
+    static const Region kFullBounds90Rotation;
+
+    StrictMock<OutputPartialMock> mOutput;
+    LayerFESet mGeomSnapshots;
+    Output::CoverageState mCoverageState{mGeomSnapshots};
+
+    std::shared_ptr<mock::Layer> mLayer{new StrictMock<mock::Layer>()};
+    sp<StrictMock<mock::LayerFE>> mLayerFE{new StrictMock<mock::LayerFE>()};
+    LayerFECompositionState mLayerFEState;
+    mock::OutputLayer mOutputLayer;
+    impl::OutputLayerCompositionState mOutputLayerState;
+};
+
+const Region OutputEnsureOutputLayerIfVisibleTest::kEmptyRegion = Region(Rect(0, 0, 0, 0));
+const Region OutputEnsureOutputLayerIfVisibleTest::kFullBoundsNoRotation =
+        Region(Rect(0, 0, 100, 200));
+const Region OutputEnsureOutputLayerIfVisibleTest::kRightHalfBoundsNoRotation =
+        Region(Rect(0, 100, 100, 200));
+const Region OutputEnsureOutputLayerIfVisibleTest::kLowerHalfBoundsNoRotation =
+        Region(Rect(50, 0, 100, 200));
+const Region OutputEnsureOutputLayerIfVisibleTest::kFullBounds90Rotation =
+        Region(Rect(0, 0, 200, 100));
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, doesNothingIfNoLayerFE) {
+    EXPECT_CALL(*mLayer, getLayerFE).WillOnce(Return(sp<LayerFE>()));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, performsGeomLatchBeforeCheckingIfLayerBelongs) {
+    EXPECT_CALL(mOutput, belongsInOutput(mLayer.get())).WillOnce(Return(false));
+    EXPECT_CALL(*mLayerFE.get(),
+                latchCompositionState(Ref(mLayerFEState),
+                                      compositionengine::LayerFE::StateSubset::BasicGeometry));
+
+    mGeomSnapshots.clear();
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       skipsLatchIfAlreadyLatchedBeforeCheckingIfLayerBelongs) {
+    EXPECT_CALL(mOutput, belongsInOutput(mLayer.get())).WillOnce(Return(false));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, takesEarlyOutIfLayerNotVisible) {
+    mLayerFEState.isVisible = false;
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, takesEarlyOutIfLayerHasEmptyVisibleRegion) {
+    mLayerFEState.geomLayerBounds = FloatRect{0, 0, 0, 0};
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, takesNotSoEarlyOutifDrawRegionEmpty) {
+    mOutput.mState.bounds = Rect(0, 0, 0, 0);
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesCreatingOutputLayerForOpaqueDirtyNotRotatedLayer) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesUpdatingOutputLayerForOpaqueDirtyNotRotatedLayer) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(0u), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesCreatingOutputLayerForTransparentDirtyNotRotatedLayer) {
+    mLayerFEState.isOpaque = false;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kEmptyRegion));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion,
+                RegionEq(kRightHalfBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesUpdatingOutputLayerForTransparentDirtyNotRotatedLayer) {
+    mLayerFEState.isOpaque = false;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(0u), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kEmptyRegion));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion,
+                RegionEq(kRightHalfBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesCreatingOutputLayerForOpaqueNonDirtyNotRotatedLayer) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = false;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesUpdatingOutputLayerForOpaqueNonDirtyNotRotatedLayer) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = false;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(0u), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kLowerHalfBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesCreatingOutputLayerForOpaqueDirtyRotated90Layer) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerBounds = FloatRect{0, 0, 200, 100};
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_ROT_90, 100, 200);
+    mOutputLayerState.visibleRegion = Region(Rect(0, 0, 100, 100));
+    mOutputLayerState.coveredRegion = Region(Rect(100, 0, 200, 100));
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesUpdatingOutputLayerForOpaqueDirtyRotated90Layer) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerBounds = FloatRect{0, 0, 200, 100};
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_ROT_90, 100, 200);
+    mOutputLayerState.visibleRegion = Region(Rect(0, 0, 100, 100));
+    mOutputLayerState.coveredRegion = Region(Rect(100, 0, 200, 100));
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(0u), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBoundsNoRotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesCreatingOutputLayerForOpaqueDirtyNotRotatedLayerRotatedOutput) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    mOutput.mState.viewport = Rect(0, 0, 300, 200);
+    mOutput.mState.transform = ui::Transform(TR_ROT_90, 200, 300);
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBounds90Rotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesUpdatingOutputLayerForOpaqueDirtyNotRotatedLayerRotatedOutput) {
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    mOutput.mState.viewport = Rect(0, 0, 300, 200);
+    mOutput.mState.transform = ui::Transform(TR_ROT_90, 200, 300);
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(0u), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kFullBoundsNoRotation));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kFullBoundsNoRotation));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kFullBounds90Rotation));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest,
+       handlesCreatingOutputLayerForOpaqueDirtyArbitraryTransformLayer) {
+    ui::Transform arbitraryTransform;
+    arbitraryTransform.set(1, 1, -1, 1);
+    arbitraryTransform.set(0, 100);
+
+    mLayerFEState.isOpaque = true;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerBounds = FloatRect{0, 0, 100, 200};
+    mLayerFEState.geomLayerTransform = arbitraryTransform;
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    const Region kRegion = Region(Rect(0, 0, 300, 300));
+    const Region kRegionClipped = Region(Rect(0, 0, 200, 300));
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kRegion));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kRegion));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kEmptyRegion));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kRegion));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion, RegionEq(kRegion));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kEmptyRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kRegionClipped));
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, coverageAccumulatesTest) {
+    mLayerFEState.isOpaque = false;
+    mLayerFEState.contentDirty = true;
+    mLayerFEState.geomLayerTransform = ui::Transform(TR_IDENT, 100, 200);
+
+    mCoverageState.dirtyRegion = Region(Rect(0, 0, 500, 500));
+    mCoverageState.aboveCoveredLayers = Region(Rect(50, 0, 150, 200));
+    mCoverageState.aboveOpaqueLayers = Region(Rect(50, 0, 150, 200));
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(0u), Eq(mLayer), Eq(mLayerFE)))
+            .WillOnce(Return(&mOutputLayer));
+
+    mOutput.ensureOutputLayerIfVisible(mLayer, mCoverageState);
+
+    const Region kExpectedDirtyRegion = Region(Rect(0, 0, 500, 500));
+    const Region kExpectedAboveCoveredRegion = Region(Rect(0, 0, 150, 200));
+    const Region kExpectedAboveOpaqueRegion = Region(Rect(50, 0, 150, 200));
+    const Region kExpectedLayerVisibleRegion = Region(Rect(0, 0, 50, 200));
+    const Region kExpectedLayerCoveredRegion = Region(Rect(50, 0, 100, 200));
+    const Region kExpectedLayerVisibleNonTransparentRegion = Region(Rect(0, 100, 50, 200));
+
+    EXPECT_THAT(mCoverageState.dirtyRegion, RegionEq(kExpectedDirtyRegion));
+    EXPECT_THAT(mCoverageState.aboveCoveredLayers, RegionEq(kExpectedAboveCoveredRegion));
+    EXPECT_THAT(mCoverageState.aboveOpaqueLayers, RegionEq(kExpectedAboveOpaqueRegion));
+
+    EXPECT_THAT(mOutputLayerState.visibleRegion, RegionEq(kExpectedLayerVisibleRegion));
+    EXPECT_THAT(mOutputLayerState.visibleNonTransparentRegion,
+                RegionEq(kExpectedLayerVisibleNonTransparentRegion));
+    EXPECT_THAT(mOutputLayerState.coveredRegion, RegionEq(kExpectedLayerCoveredRegion));
+    EXPECT_THAT(mOutputLayerState.outputSpaceVisibleRegion, RegionEq(kExpectedLayerVisibleRegion));
+}
+
+/*
+ * Output::present()
+ */
+
+struct OutputPresentTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD1(updateColorProfile, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(updateAndWriteCompositionState,
+                     void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(setColorTransform, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD0(beginFrame, void());
+        MOCK_METHOD0(prepareFrame, void());
+        MOCK_METHOD1(devOptRepaintFlash, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD1(finishFrame, void(const compositionengine::CompositionRefreshArgs&));
+        MOCK_METHOD0(postFramebuffer, void());
+    };
+
+    StrictMock<OutputPartialMock> mOutput;
+};
+
+TEST_F(OutputPresentTest, justInvokesChildFunctionsInSequence) {
+    CompositionRefreshArgs args;
+
+    InSequence seq;
+    EXPECT_CALL(mOutput, updateColorProfile(Ref(args)));
+    EXPECT_CALL(mOutput, updateAndWriteCompositionState(Ref(args)));
+    EXPECT_CALL(mOutput, setColorTransform(Ref(args)));
+    EXPECT_CALL(mOutput, beginFrame());
+    EXPECT_CALL(mOutput, prepareFrame());
+    EXPECT_CALL(mOutput, devOptRepaintFlash(Ref(args)));
+    EXPECT_CALL(mOutput, finishFrame(Ref(args)));
+    EXPECT_CALL(mOutput, postFramebuffer());
+
+    mOutput.present(args);
+}
+
+/*
+ * Output::updateColorProfile()
+ */
+
+struct OutputUpdateColorProfileTest : public testing::Test {
+    using TestType = OutputUpdateColorProfileTest;
+
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD1(setColorProfile, void(const ColorProfile&));
+    };
+
+    struct Layer {
+        Layer() {
+            EXPECT_CALL(mOutputLayer, getLayer()).WillRepeatedly(ReturnRef(mLayer));
+            EXPECT_CALL(mOutputLayer, getLayerFE()).WillRepeatedly(ReturnRef(mLayerFE));
+            EXPECT_CALL(mLayer, getFEState()).WillRepeatedly(ReturnRef(mLayerFEState));
+        }
+
+        StrictMock<mock::OutputLayer> mOutputLayer;
+        StrictMock<mock::Layer> mLayer;
+        StrictMock<mock::LayerFE> mLayerFE;
+        LayerFECompositionState mLayerFEState;
+    };
+
+    OutputUpdateColorProfileTest() {
+        mOutput.setDisplayColorProfileForTest(
+                std::unique_ptr<DisplayColorProfile>(mDisplayColorProfile));
+        mOutput.setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
+
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(0))
+                .WillRepeatedly(Return(&mLayer1.mOutputLayer));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(1))
+                .WillRepeatedly(Return(&mLayer2.mOutputLayer));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(2))
+                .WillRepeatedly(Return(&mLayer3.mOutputLayer));
+    }
+
+    struct ExecuteState : public CallOrderStateMachineHelper<TestType, ExecuteState> {
+        void execute() { getInstance()->mOutput.updateColorProfile(getInstance()->mRefreshArgs); }
+    };
+
+    mock::DisplayColorProfile* mDisplayColorProfile = new StrictMock<mock::DisplayColorProfile>();
+    mock::RenderSurface* mRenderSurface = new StrictMock<mock::RenderSurface>();
+    StrictMock<OutputPartialMock> mOutput;
+
+    Layer mLayer1;
+    Layer mLayer2;
+    Layer mLayer3;
+
+    CompositionRefreshArgs mRefreshArgs;
+};
+
+// TODO(b/144522012): Refactor Output::updateColorProfile and the related code
+// to make it easier to write unit tests.
+
+TEST_F(OutputUpdateColorProfileTest, setsAColorProfileWhenUnmanaged) {
+    // When the outputColorSetting is set to kUnmanaged, the implementation sets
+    // a simple default color profile without looking at anything else.
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(3));
+    EXPECT_CALL(mOutput,
+                setColorProfile(ColorProfileEq(
+                        ColorProfile{ui::ColorMode::NATIVE, ui::Dataspace::UNKNOWN,
+                                     ui::RenderIntent::COLORIMETRIC, ui::Dataspace::UNKNOWN})));
+
+    mRefreshArgs.outputColorSetting = OutputColorSetting::kUnmanaged;
+    mRefreshArgs.colorSpaceAgnosticDataspace = ui::Dataspace::UNKNOWN;
+
+    mOutput.updateColorProfile(mRefreshArgs);
+}
+
+struct OutputUpdateColorProfileTest_GetBestColorModeResultBecomesSetProfile
+      : public OutputUpdateColorProfileTest {
+    OutputUpdateColorProfileTest_GetBestColorModeResultBecomesSetProfile() {
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(0));
+        mRefreshArgs.outputColorSetting = OutputColorSetting::kEnhanced;
+        mRefreshArgs.colorSpaceAgnosticDataspace = ui::Dataspace::UNKNOWN;
+    }
+
+    struct ExpectBestColorModeCallResultUsedToSetColorProfileState
+          : public CallOrderStateMachineHelper<
+                    TestType, ExpectBestColorModeCallResultUsedToSetColorProfileState> {
+        [[nodiscard]] auto expectBestColorModeCallResultUsedToSetColorProfile(
+                ui::ColorMode colorMode, ui::Dataspace dataspace, ui::RenderIntent renderIntent) {
+            EXPECT_CALL(*getInstance()->mDisplayColorProfile,
+                        getBestColorMode(ui::Dataspace::V0_SRGB, ui::RenderIntent::ENHANCE, _, _,
+                                         _))
+                    .WillOnce(DoAll(SetArgPointee<2>(dataspace), SetArgPointee<3>(colorMode),
+                                    SetArgPointee<4>(renderIntent)));
+            EXPECT_CALL(getInstance()->mOutput,
+                        setColorProfile(
+                                ColorProfileEq(ColorProfile{colorMode, dataspace, renderIntent,
+                                                            ui::Dataspace::UNKNOWN})));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    // Call this member function to start using the mini-DSL defined above.
+    [[nodiscard]] auto verify() {
+        return ExpectBestColorModeCallResultUsedToSetColorProfileState::make(this);
+    }
+};
+
+TEST_F(OutputUpdateColorProfileTest_GetBestColorModeResultBecomesSetProfile,
+       Native_Unknown_Colorimetric_Set) {
+    verify().expectBestColorModeCallResultUsedToSetColorProfile(ui::ColorMode::NATIVE,
+                                                                ui::Dataspace::UNKNOWN,
+                                                                ui::RenderIntent::COLORIMETRIC)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_GetBestColorModeResultBecomesSetProfile,
+       DisplayP3_DisplayP3_Enhance_Set) {
+    verify().expectBestColorModeCallResultUsedToSetColorProfile(ui::ColorMode::DISPLAY_P3,
+                                                                ui::Dataspace::DISPLAY_P3,
+                                                                ui::RenderIntent::ENHANCE)
+            .execute();
+}
+
+struct OutputUpdateColorProfileTest_ColorSpaceAgnosticeDataspaceAffectsSetColorProfile
+      : public OutputUpdateColorProfileTest {
+    OutputUpdateColorProfileTest_ColorSpaceAgnosticeDataspaceAffectsSetColorProfile() {
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(0));
+        EXPECT_CALL(*mDisplayColorProfile,
+                    getBestColorMode(ui::Dataspace::V0_SRGB, ui::RenderIntent::ENHANCE, _, _, _))
+                .WillRepeatedly(DoAll(SetArgPointee<2>(ui::Dataspace::UNKNOWN),
+                                      SetArgPointee<3>(ui::ColorMode::NATIVE),
+                                      SetArgPointee<4>(ui::RenderIntent::COLORIMETRIC)));
+        mRefreshArgs.outputColorSetting = OutputColorSetting::kEnhanced;
+    }
+
+    struct IfColorSpaceAgnosticDataspaceSetToState
+          : public CallOrderStateMachineHelper<TestType, IfColorSpaceAgnosticDataspaceSetToState> {
+        [[nodiscard]] auto ifColorSpaceAgnosticDataspaceSetTo(ui::Dataspace dataspace) {
+            getInstance()->mRefreshArgs.colorSpaceAgnosticDataspace = dataspace;
+            return nextState<ThenExpectSetColorProfileCallUsesColorSpaceAgnosticDataspaceState>();
+        }
+    };
+
+    struct ThenExpectSetColorProfileCallUsesColorSpaceAgnosticDataspaceState
+          : public CallOrderStateMachineHelper<
+                    TestType, ThenExpectSetColorProfileCallUsesColorSpaceAgnosticDataspaceState> {
+        [[nodiscard]] auto thenExpectSetColorProfileCallUsesColorSpaceAgnosticDataspace(
+                ui::Dataspace dataspace) {
+            EXPECT_CALL(getInstance()->mOutput,
+                        setColorProfile(ColorProfileEq(
+                                ColorProfile{ui::ColorMode::NATIVE, ui::Dataspace::UNKNOWN,
+                                             ui::RenderIntent::COLORIMETRIC, dataspace})));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    // Call this member function to start using the mini-DSL defined above.
+    [[nodiscard]] auto verify() { return IfColorSpaceAgnosticDataspaceSetToState::make(this); }
+};
+
+TEST_F(OutputUpdateColorProfileTest_ColorSpaceAgnosticeDataspaceAffectsSetColorProfile, DisplayP3) {
+    verify().ifColorSpaceAgnosticDataspaceSetTo(ui::Dataspace::DISPLAY_P3)
+            .thenExpectSetColorProfileCallUsesColorSpaceAgnosticDataspace(ui::Dataspace::DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_ColorSpaceAgnosticeDataspaceAffectsSetColorProfile, V0_SRGB) {
+    verify().ifColorSpaceAgnosticDataspaceSetTo(ui::Dataspace::V0_SRGB)
+            .thenExpectSetColorProfileCallUsesColorSpaceAgnosticDataspace(ui::Dataspace::V0_SRGB)
+            .execute();
+}
+
+struct OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference
+      : public OutputUpdateColorProfileTest {
+    // Internally the implementation looks through the dataspaces of all the
+    // visible layers. The topmost one that also has an actual dataspace
+    // preference set is used to drive subsequent choices.
+
+    OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference() {
+        mRefreshArgs.outputColorSetting = OutputColorSetting::kEnhanced;
+        mRefreshArgs.colorSpaceAgnosticDataspace = ui::Dataspace::UNKNOWN;
+
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(3));
+        EXPECT_CALL(mOutput, setColorProfile(_)).WillRepeatedly(Return());
+    }
+
+    struct IfTopLayerDataspaceState
+          : public CallOrderStateMachineHelper<TestType, IfTopLayerDataspaceState> {
+        [[nodiscard]] auto ifTopLayerIs(ui::Dataspace dataspace) {
+            getInstance()->mLayer3.mLayerFEState.dataspace = dataspace;
+            return nextState<AndIfMiddleLayerDataspaceState>();
+        }
+        [[nodiscard]] auto ifTopLayerHasNoPreference() {
+            return ifTopLayerIs(ui::Dataspace::UNKNOWN);
+        }
+    };
+
+    struct AndIfMiddleLayerDataspaceState
+          : public CallOrderStateMachineHelper<TestType, AndIfMiddleLayerDataspaceState> {
+        [[nodiscard]] auto andIfMiddleLayerIs(ui::Dataspace dataspace) {
+            getInstance()->mLayer2.mLayerFEState.dataspace = dataspace;
+            return nextState<AndIfBottomLayerDataspaceState>();
+        }
+        [[nodiscard]] auto andIfMiddleLayerHasNoPreference() {
+            return andIfMiddleLayerIs(ui::Dataspace::UNKNOWN);
+        }
+    };
+
+    struct AndIfBottomLayerDataspaceState
+          : public CallOrderStateMachineHelper<TestType, AndIfBottomLayerDataspaceState> {
+        [[nodiscard]] auto andIfBottomLayerIs(ui::Dataspace dataspace) {
+            getInstance()->mLayer1.mLayerFEState.dataspace = dataspace;
+            return nextState<ThenExpectBestColorModeCallUsesState>();
+        }
+        [[nodiscard]] auto andIfBottomLayerHasNoPreference() {
+            return andIfBottomLayerIs(ui::Dataspace::UNKNOWN);
+        }
+    };
+
+    struct ThenExpectBestColorModeCallUsesState
+          : public CallOrderStateMachineHelper<TestType, ThenExpectBestColorModeCallUsesState> {
+        [[nodiscard]] auto thenExpectBestColorModeCallUses(ui::Dataspace dataspace) {
+            EXPECT_CALL(*getInstance()->mDisplayColorProfile,
+                        getBestColorMode(dataspace, _, _, _, _));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    // Call this member function to start using the mini-DSL defined above.
+    [[nodiscard]] auto verify() { return IfTopLayerDataspaceState::make(this); }
+};
+
+TEST_F(OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference,
+       noStrongLayerPrefenceUses_V0_SRGB) {
+    // If none of the layers indicate a preference, then V0_SRGB is the
+    // preferred choice (subject to additional checks).
+    verify().ifTopLayerHasNoPreference()
+            .andIfMiddleLayerHasNoPreference()
+            .andIfBottomLayerHasNoPreference()
+            .thenExpectBestColorModeCallUses(ui::Dataspace::V0_SRGB)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference,
+       ifTopmostUses_DisplayP3_Then_DisplayP3_Chosen) {
+    // If only the topmost layer has a preference, then that is what is chosen.
+    verify().ifTopLayerIs(ui::Dataspace::DISPLAY_P3)
+            .andIfMiddleLayerHasNoPreference()
+            .andIfBottomLayerHasNoPreference()
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference,
+       ifMiddleUses_DisplayP3_Then_DisplayP3_Chosen) {
+    // If only the middle layer has a preference, that that is what is chosen.
+    verify().ifTopLayerHasNoPreference()
+            .andIfMiddleLayerIs(ui::Dataspace::DISPLAY_P3)
+            .andIfBottomLayerHasNoPreference()
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference,
+       ifBottomUses_DisplayP3_Then_DisplayP3_Chosen) {
+    // If only the middle layer has a preference, that that is what is chosen.
+    verify().ifTopLayerHasNoPreference()
+            .andIfMiddleLayerHasNoPreference()
+            .andIfBottomLayerIs(ui::Dataspace::DISPLAY_P3)
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference,
+       ifTopUses_DisplayBT2020_AndBottomUses_DisplayP3_Then_DisplayBT2020_Chosen) {
+    // If multiple layers have a preference, the topmost value is what is used.
+    verify().ifTopLayerIs(ui::Dataspace::DISPLAY_BT2020)
+            .andIfMiddleLayerHasNoPreference()
+            .andIfBottomLayerIs(ui::Dataspace::DISPLAY_P3)
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_BT2020)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_TopmostLayerPreferenceSetsOutputPreference,
+       ifTopUses_DisplayP3_AndBottomUses_V0_SRGB_Then_DisplayP3_Chosen) {
+    // If multiple layers have a preference, the topmost value is what is used.
+    verify().ifTopLayerIs(ui::Dataspace::DISPLAY_P3)
+            .andIfMiddleLayerHasNoPreference()
+            .andIfBottomLayerIs(ui::Dataspace::DISPLAY_BT2020)
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_P3)
+            .execute();
+}
+
+struct OutputUpdateColorProfileTest_ForceOutputColorOverrides
+      : public OutputUpdateColorProfileTest {
+    // If CompositionRefreshArgs::forceOutputColorMode is set to some specific
+    // values, it overrides the layer dataspace choice.
+
+    OutputUpdateColorProfileTest_ForceOutputColorOverrides() {
+        mRefreshArgs.outputColorSetting = OutputColorSetting::kEnhanced;
+        mRefreshArgs.colorSpaceAgnosticDataspace = ui::Dataspace::UNKNOWN;
+
+        mLayer1.mLayerFEState.dataspace = ui::Dataspace::DISPLAY_BT2020;
+
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(1));
+        EXPECT_CALL(mOutput, setColorProfile(_)).WillRepeatedly(Return());
+    }
+
+    struct IfForceOutputColorModeState
+          : public CallOrderStateMachineHelper<TestType, IfForceOutputColorModeState> {
+        [[nodiscard]] auto ifForceOutputColorMode(ui::ColorMode colorMode) {
+            getInstance()->mRefreshArgs.forceOutputColorMode = colorMode;
+            return nextState<ThenExpectBestColorModeCallUsesState>();
+        }
+        [[nodiscard]] auto ifNoOverride() { return ifForceOutputColorMode(ui::ColorMode::NATIVE); }
+    };
+
+    struct ThenExpectBestColorModeCallUsesState
+          : public CallOrderStateMachineHelper<TestType, ThenExpectBestColorModeCallUsesState> {
+        [[nodiscard]] auto thenExpectBestColorModeCallUses(ui::Dataspace dataspace) {
+            EXPECT_CALL(*getInstance()->mDisplayColorProfile,
+                        getBestColorMode(dataspace, _, _, _, _));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    // Call this member function to start using the mini-DSL defined above.
+    [[nodiscard]] auto verify() { return IfForceOutputColorModeState::make(this); }
+};
+
+TEST_F(OutputUpdateColorProfileTest_ForceOutputColorOverrides, NoOverride_DoesNotOverride) {
+    // By default the layer state is used to set the preferred dataspace
+    verify().ifNoOverride()
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_BT2020)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_ForceOutputColorOverrides, SRGB_Override_USES_V0_SRGB) {
+    // Setting ui::ColorMode::SRGB overrides it with ui::Dataspace::V0_SRGB
+    verify().ifForceOutputColorMode(ui::ColorMode::SRGB)
+            .thenExpectBestColorModeCallUses(ui::Dataspace::V0_SRGB)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_ForceOutputColorOverrides, DisplayP3_Override_Uses_DisplayP3) {
+    // Setting ui::ColorMode::DISPLAY_P3 overrides it with ui::Dataspace::DISPLAY_P3
+    verify().ifForceOutputColorMode(ui::ColorMode::DISPLAY_P3)
+            .thenExpectBestColorModeCallUses(ui::Dataspace::DISPLAY_P3)
+            .execute();
+}
+
+// HDR output requires all layers to be compatible with the chosen HDR
+// dataspace, along with there being proper support.
+struct OutputUpdateColorProfileTest_Hdr : public OutputUpdateColorProfileTest {
+    OutputUpdateColorProfileTest_Hdr() {
+        mRefreshArgs.outputColorSetting = OutputColorSetting::kEnhanced;
+        mRefreshArgs.colorSpaceAgnosticDataspace = ui::Dataspace::UNKNOWN;
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(2));
+        EXPECT_CALL(mOutput, setColorProfile(_)).WillRepeatedly(Return());
+    }
+
+    static constexpr ui::Dataspace kNonHdrDataspace = ui::Dataspace::DISPLAY_P3;
+    static constexpr ui::Dataspace BT2020_PQ = ui::Dataspace::BT2020_PQ;
+    static constexpr ui::Dataspace BT2020_HLG = ui::Dataspace::BT2020_HLG;
+    static constexpr ui::Dataspace DISPLAY_P3 = ui::Dataspace::DISPLAY_P3;
+
+    struct IfTopLayerDataspaceState
+          : public CallOrderStateMachineHelper<TestType, IfTopLayerDataspaceState> {
+        [[nodiscard]] auto ifTopLayerIs(ui::Dataspace dataspace) {
+            getInstance()->mLayer2.mLayerFEState.dataspace = dataspace;
+            return nextState<AndTopLayerCompositionTypeState>();
+        }
+        [[nodiscard]] auto ifTopLayerIsNotHdr() { return ifTopLayerIs(kNonHdrDataspace); }
+    };
+
+    struct AndTopLayerCompositionTypeState
+          : public CallOrderStateMachineHelper<TestType, AndTopLayerCompositionTypeState> {
+        [[nodiscard]] auto andTopLayerIsREComposed(bool renderEngineComposed) {
+            getInstance()->mLayer2.mLayerFEState.forceClientComposition = renderEngineComposed;
+            return nextState<AndIfBottomLayerDataspaceState>();
+        }
+    };
+
+    struct AndIfBottomLayerDataspaceState
+          : public CallOrderStateMachineHelper<TestType, AndIfBottomLayerDataspaceState> {
+        [[nodiscard]] auto andIfBottomLayerIs(ui::Dataspace dataspace) {
+            getInstance()->mLayer1.mLayerFEState.dataspace = dataspace;
+            return nextState<AndBottomLayerCompositionTypeState>();
+        }
+        [[nodiscard]] auto andIfBottomLayerIsNotHdr() {
+            return andIfBottomLayerIs(kNonHdrDataspace);
+        }
+    };
+
+    struct AndBottomLayerCompositionTypeState
+          : public CallOrderStateMachineHelper<TestType, AndBottomLayerCompositionTypeState> {
+        [[nodiscard]] auto andBottomLayerIsREComposed(bool renderEngineComposed) {
+            getInstance()->mLayer1.mLayerFEState.forceClientComposition = renderEngineComposed;
+            return nextState<AndIfHasLegacySupportState>();
+        }
+    };
+
+    struct AndIfHasLegacySupportState
+          : public CallOrderStateMachineHelper<TestType, AndIfHasLegacySupportState> {
+        [[nodiscard]] auto andIfLegacySupportFor(ui::Dataspace dataspace, bool legacySupport) {
+            EXPECT_CALL(*getInstance()->mDisplayColorProfile, hasLegacyHdrSupport(dataspace))
+                    .WillOnce(Return(legacySupport));
+            return nextState<ThenExpectBestColorModeCallUsesState>();
+        }
+    };
+
+    struct ThenExpectBestColorModeCallUsesState
+          : public CallOrderStateMachineHelper<TestType, ThenExpectBestColorModeCallUsesState> {
+        [[nodiscard]] auto thenExpectBestColorModeCallUses(ui::Dataspace dataspace) {
+            EXPECT_CALL(*getInstance()->mDisplayColorProfile,
+                        getBestColorMode(dataspace, _, _, _, _));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    // Call this member function to start using the mini-DSL defined above.
+    [[nodiscard]] auto verify() { return IfTopLayerDataspaceState::make(this); }
+};
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_PQ_HW_Uses_PQ) {
+    // If all layers use BT2020_PQ, and there are no other special conditions,
+    // BT2020_PQ is used.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_PQ_HW_IfPQHasLegacySupport_Uses_DisplayP3) {
+    // BT2020_PQ is not used if there is only legacy support for it.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, true)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_PQ_RE_Uses_PQ) {
+    // BT2020_PQ is still used if the bottom layer is RenderEngine composed.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(true)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_RE_On_PQ_HW_Uses_DisplayP3) {
+    // BT2020_PQ is not used if the top layer is RenderEngine composed.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(true)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_HLG_HW_Uses_PQ) {
+    // If there is mixed HLG/PQ use, and the topmost layer is PQ, then PQ is used if there
+    // are no other special conditions.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_HLG_HW_IfPQHasLegacySupport_Uses_DisplayP3) {
+    // BT2020_PQ is not used if there is only legacy support for it.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, true)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_HLG_RE_Uses_PQ) {
+    // BT2020_PQ is used if the bottom HLG layer is RenderEngine composed.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(true)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_RE_On_HLG_HW_Uses_DisplayP3) {
+    // BT2020_PQ is not used if the top PQ layer is RenderEngine composed.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(true)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_PQ_HW_Uses_PQ) {
+    // If there is mixed HLG/PQ use, and the topmost layer is HLG, then PQ is
+    // used if there are no other special conditions.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_PQ_HW_IfPQHasLegacySupport_Uses_DisplayP3) {
+    // BT2020_PQ is not used if there is only legacy support for it.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, true)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_PQ_RE_Uses_DisplayP3) {
+    // BT2020_PQ is not used if the bottom PQ layer is RenderEngine composed.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(true)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_RE_On_PQ_HW_Uses_PQ) {
+    // BT2020_PQ is still used if the top HLG layer is RenderEngine composed.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(true)
+            .andIfBottomLayerIs(BT2020_PQ)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_HLG_HW_Uses_HLG) {
+    // If all layers use HLG then HLG is used if there are no other special
+    // conditions.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_HLG, false)
+            .thenExpectBestColorModeCallUses(BT2020_HLG)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_HLG_HW_IfPQHasLegacySupport_Uses_DisplayP3) {
+    // BT2020_HLG is not used if there is legacy support for it.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_HLG, true)
+            .thenExpectBestColorModeCallUses(DISPLAY_P3)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_HLG_RE_Uses_HLG) {
+    // BT2020_HLG is used even if the bottom layer is client composed.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(true)
+            .andIfLegacySupportFor(BT2020_HLG, false)
+            .thenExpectBestColorModeCallUses(BT2020_HLG)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_RE_On_HLG_HW_Uses_HLG) {
+    // BT2020_HLG is used even if the top layer is client composed.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(true)
+            .andIfBottomLayerIs(BT2020_HLG)
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_HLG, false)
+            .thenExpectBestColorModeCallUses(BT2020_HLG)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, PQ_HW_On_NonHdr_HW_Uses_PQ) {
+    // Even if there are non-HDR layers present, BT2020_PQ can still be used.
+    verify().ifTopLayerIs(BT2020_PQ)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIsNotHdr()
+            .andBottomLayerIsREComposed(false)
+            .andIfLegacySupportFor(BT2020_PQ, false)
+            .thenExpectBestColorModeCallUses(BT2020_PQ)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfileTest_Hdr, HLG_HW_On_NonHdr_RE_Uses_HLG) {
+    // If all layers use HLG then HLG is used if there are no other special
+    // conditions.
+    verify().ifTopLayerIs(BT2020_HLG)
+            .andTopLayerIsREComposed(false)
+            .andIfBottomLayerIsNotHdr()
+            .andBottomLayerIsREComposed(true)
+            .andIfLegacySupportFor(BT2020_HLG, false)
+            .thenExpectBestColorModeCallUses(BT2020_HLG)
+            .execute();
+}
+
+struct OutputUpdateColorProfile_AffectsChosenRenderIntentTest
+      : public OutputUpdateColorProfileTest {
+    // The various values for CompositionRefreshArgs::outputColorSetting affect
+    // the chosen renderIntent, along with whether the preferred dataspace is an
+    // HDR dataspace or not.
+
+    OutputUpdateColorProfile_AffectsChosenRenderIntentTest() {
+        mRefreshArgs.outputColorSetting = OutputColorSetting::kEnhanced;
+        mRefreshArgs.colorSpaceAgnosticDataspace = ui::Dataspace::UNKNOWN;
+        mLayer1.mLayerFEState.dataspace = ui::Dataspace::BT2020_PQ;
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(1));
+        EXPECT_CALL(mOutput, setColorProfile(_)).WillRepeatedly(Return());
+        EXPECT_CALL(*mDisplayColorProfile, hasLegacyHdrSupport(ui::Dataspace::BT2020_PQ))
+                .WillRepeatedly(Return(false));
+    }
+
+    // The tests here involve enough state and GMock setup that using a mini-DSL
+    // makes the tests much more readable, and allows the test to focus more on
+    // the intent than on some of the details.
+
+    static constexpr ui::Dataspace kNonHdrDataspace = ui::Dataspace::DISPLAY_P3;
+    static constexpr ui::Dataspace kHdrDataspace = ui::Dataspace::BT2020_PQ;
+
+    struct IfDataspaceChosenState
+          : public CallOrderStateMachineHelper<TestType, IfDataspaceChosenState> {
+        [[nodiscard]] auto ifDataspaceChosenIs(ui::Dataspace dataspace) {
+            getInstance()->mLayer1.mLayerFEState.dataspace = dataspace;
+            return nextState<AndOutputColorSettingState>();
+        }
+        [[nodiscard]] auto ifDataspaceChosenIsNonHdr() {
+            return ifDataspaceChosenIs(kNonHdrDataspace);
+        }
+        [[nodiscard]] auto ifDataspaceChosenIsHdr() { return ifDataspaceChosenIs(kHdrDataspace); }
+    };
+
+    struct AndOutputColorSettingState
+          : public CallOrderStateMachineHelper<TestType, AndOutputColorSettingState> {
+        [[nodiscard]] auto andOutputColorSettingIs(OutputColorSetting setting) {
+            getInstance()->mRefreshArgs.outputColorSetting = setting;
+            return nextState<ThenExpectBestColorModeCallUsesState>();
+        }
+    };
+
+    struct ThenExpectBestColorModeCallUsesState
+          : public CallOrderStateMachineHelper<TestType, ThenExpectBestColorModeCallUsesState> {
+        [[nodiscard]] auto thenExpectBestColorModeCallUses(ui::RenderIntent intent) {
+            EXPECT_CALL(*getInstance()->mDisplayColorProfile,
+                        getBestColorMode(getInstance()->mLayer1.mLayerFEState.dataspace, intent, _,
+                                         _, _));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    // Tests call one of these two helper member functions to start using the
+    // mini-DSL defined above.
+    [[nodiscard]] auto verify() { return IfDataspaceChosenState::make(this); }
+};
+
+TEST_F(OutputUpdateColorProfile_AffectsChosenRenderIntentTest,
+       Managed_NonHdr_Prefers_Colorimetric) {
+    verify().ifDataspaceChosenIsNonHdr()
+            .andOutputColorSettingIs(OutputColorSetting::kManaged)
+            .thenExpectBestColorModeCallUses(ui::RenderIntent::COLORIMETRIC)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfile_AffectsChosenRenderIntentTest,
+       Managed_Hdr_Prefers_ToneMapColorimetric) {
+    verify().ifDataspaceChosenIsHdr()
+            .andOutputColorSettingIs(OutputColorSetting::kManaged)
+            .thenExpectBestColorModeCallUses(ui::RenderIntent::TONE_MAP_COLORIMETRIC)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfile_AffectsChosenRenderIntentTest, Enhanced_NonHdr_Prefers_Enhance) {
+    verify().ifDataspaceChosenIsNonHdr()
+            .andOutputColorSettingIs(OutputColorSetting::kEnhanced)
+            .thenExpectBestColorModeCallUses(ui::RenderIntent::ENHANCE)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfile_AffectsChosenRenderIntentTest,
+       Enhanced_Hdr_Prefers_ToneMapEnhance) {
+    verify().ifDataspaceChosenIsHdr()
+            .andOutputColorSettingIs(OutputColorSetting::kEnhanced)
+            .thenExpectBestColorModeCallUses(ui::RenderIntent::TONE_MAP_ENHANCE)
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfile_AffectsChosenRenderIntentTest, Vendor_NonHdr_Prefers_Vendor) {
+    verify().ifDataspaceChosenIsNonHdr()
+            .andOutputColorSettingIs(kVendorSpecifiedOutputColorSetting)
+            .thenExpectBestColorModeCallUses(
+                    static_cast<ui::RenderIntent>(kVendorSpecifiedOutputColorSetting))
+            .execute();
+}
+
+TEST_F(OutputUpdateColorProfile_AffectsChosenRenderIntentTest, Vendor_Hdr_Prefers_Vendor) {
+    verify().ifDataspaceChosenIsHdr()
+            .andOutputColorSettingIs(kVendorSpecifiedOutputColorSetting)
+            .thenExpectBestColorModeCallUses(
+                    static_cast<ui::RenderIntent>(kVendorSpecifiedOutputColorSetting))
+            .execute();
+}
+
+/*
+ * Output::beginFrame()
+ */
+
+struct OutputBeginFrameTest : public ::testing::Test {
+    using TestType = OutputBeginFrameTest;
+
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_CONST_METHOD1(getDirtyRegion, Region(bool));
+    };
+
+    OutputBeginFrameTest() {
+        mOutput.setDisplayColorProfileForTest(
+                std::unique_ptr<DisplayColorProfile>(mDisplayColorProfile));
+        mOutput.setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
+    }
+
+    struct IfGetDirtyRegionExpectationState
+          : public CallOrderStateMachineHelper<TestType, IfGetDirtyRegionExpectationState> {
+        [[nodiscard]] auto ifGetDirtyRegionReturns(Region dirtyRegion) {
+            EXPECT_CALL(getInstance()->mOutput, getDirtyRegion(false))
+                    .WillOnce(Return(dirtyRegion));
+            return nextState<AndIfGetOutputLayerCountExpectationState>();
+        }
+    };
+
+    struct AndIfGetOutputLayerCountExpectationState
+          : public CallOrderStateMachineHelper<TestType, AndIfGetOutputLayerCountExpectationState> {
+        [[nodiscard]] auto andIfGetOutputLayerCountReturns(size_t layerCount) {
+            EXPECT_CALL(getInstance()->mOutput, getOutputLayerCount()).WillOnce(Return(layerCount));
+            return nextState<AndIfLastCompositionHadVisibleLayersState>();
+        }
+    };
+
+    struct AndIfLastCompositionHadVisibleLayersState
+          : public CallOrderStateMachineHelper<TestType,
+                                               AndIfLastCompositionHadVisibleLayersState> {
+        [[nodiscard]] auto andIfLastCompositionHadVisibleLayersIs(bool hadOutputLayers) {
+            getInstance()->mOutput.mState.lastCompositionHadVisibleLayers = hadOutputLayers;
+            return nextState<ThenExpectRenderSurfaceBeginFrameCallState>();
+        }
+    };
+
+    struct ThenExpectRenderSurfaceBeginFrameCallState
+          : public CallOrderStateMachineHelper<TestType,
+                                               ThenExpectRenderSurfaceBeginFrameCallState> {
+        [[nodiscard]] auto thenExpectRenderSurfaceBeginFrameCall(bool mustRecompose) {
+            EXPECT_CALL(*getInstance()->mRenderSurface, beginFrame(mustRecompose));
+            return nextState<ExecuteState>();
+        }
+    };
+
+    struct ExecuteState : public CallOrderStateMachineHelper<TestType, ExecuteState> {
+        [[nodiscard]] auto execute() {
+            getInstance()->mOutput.beginFrame();
+            return nextState<CheckPostconditionHadVisibleLayersState>();
+        }
+    };
+
+    struct CheckPostconditionHadVisibleLayersState
+          : public CallOrderStateMachineHelper<TestType, CheckPostconditionHadVisibleLayersState> {
+        void checkPostconditionHadVisibleLayers(bool expected) {
+            EXPECT_EQ(expected, getInstance()->mOutput.mState.lastCompositionHadVisibleLayers);
+        }
+    };
+
+    // Tests call one of these two helper member functions to start using the
+    // mini-DSL defined above.
+    [[nodiscard]] auto verify() { return IfGetDirtyRegionExpectationState::make(this); }
+
+    static const Region kEmptyRegion;
+    static const Region kNotEmptyRegion;
+
+    mock::DisplayColorProfile* mDisplayColorProfile = new StrictMock<mock::DisplayColorProfile>();
+    mock::RenderSurface* mRenderSurface = new StrictMock<mock::RenderSurface>();
+    StrictMock<OutputPartialMock> mOutput;
+};
+
+const Region OutputBeginFrameTest::kEmptyRegion{Rect{0, 0, 0, 0}};
+const Region OutputBeginFrameTest::kNotEmptyRegion{Rect{0, 0, 1, 1}};
+
+TEST_F(OutputBeginFrameTest, hasDirtyHasLayersHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kNotEmptyRegion)
+            .andIfGetOutputLayerCountReturns(1u)
+            .andIfLastCompositionHadVisibleLayersIs(true)
+            .thenExpectRenderSurfaceBeginFrameCall(true)
+            .execute()
+            .checkPostconditionHadVisibleLayers(true);
+}
+
+TEST_F(OutputBeginFrameTest, hasDirtyNotHasLayersHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kNotEmptyRegion)
+            .andIfGetOutputLayerCountReturns(0u)
+            .andIfLastCompositionHadVisibleLayersIs(true)
+            .thenExpectRenderSurfaceBeginFrameCall(true)
+            .execute()
+            .checkPostconditionHadVisibleLayers(false);
+}
+
+TEST_F(OutputBeginFrameTest, hasDirtyHasLayersNotHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kNotEmptyRegion)
+            .andIfGetOutputLayerCountReturns(1u)
+            .andIfLastCompositionHadVisibleLayersIs(false)
+            .thenExpectRenderSurfaceBeginFrameCall(true)
+            .execute()
+            .checkPostconditionHadVisibleLayers(true);
+}
+
+TEST_F(OutputBeginFrameTest, hasDirtyNotHasLayersNotHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kNotEmptyRegion)
+            .andIfGetOutputLayerCountReturns(0u)
+            .andIfLastCompositionHadVisibleLayersIs(false)
+            .thenExpectRenderSurfaceBeginFrameCall(false)
+            .execute()
+            .checkPostconditionHadVisibleLayers(false);
+}
+
+TEST_F(OutputBeginFrameTest, notHasDirtyHasLayersHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kEmptyRegion)
+            .andIfGetOutputLayerCountReturns(1u)
+            .andIfLastCompositionHadVisibleLayersIs(true)
+            .thenExpectRenderSurfaceBeginFrameCall(false)
+            .execute()
+            .checkPostconditionHadVisibleLayers(true);
+}
+
+TEST_F(OutputBeginFrameTest, notHasDirtyNotHasLayersHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kEmptyRegion)
+            .andIfGetOutputLayerCountReturns(0u)
+            .andIfLastCompositionHadVisibleLayersIs(true)
+            .thenExpectRenderSurfaceBeginFrameCall(false)
+            .execute()
+            .checkPostconditionHadVisibleLayers(true);
+}
+
+TEST_F(OutputBeginFrameTest, notHasDirtyHasLayersNotHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kEmptyRegion)
+            .andIfGetOutputLayerCountReturns(1u)
+            .andIfLastCompositionHadVisibleLayersIs(false)
+            .thenExpectRenderSurfaceBeginFrameCall(false)
+            .execute()
+            .checkPostconditionHadVisibleLayers(false);
+}
+
+TEST_F(OutputBeginFrameTest, notHasDirtyNotHasLayersNotHadLayersLastFrame) {
+    verify().ifGetDirtyRegionReturns(kEmptyRegion)
+            .andIfGetOutputLayerCountReturns(0u)
+            .andIfLastCompositionHadVisibleLayersIs(false)
+            .thenExpectRenderSurfaceBeginFrameCall(false)
+            .execute()
+            .checkPostconditionHadVisibleLayers(false);
+}
+
+/*
+ * Output::devOptRepaintFlash()
+ */
+
+struct OutputDevOptRepaintFlashTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_CONST_METHOD1(getDirtyRegion, Region(bool));
+        MOCK_METHOD1(composeSurfaces, std::optional<base::unique_fd>(const Region&));
+        MOCK_METHOD0(postFramebuffer, void());
+        MOCK_METHOD0(prepareFrame, void());
+    };
+
+    OutputDevOptRepaintFlashTest() {
+        mOutput.setDisplayColorProfileForTest(
+                std::unique_ptr<DisplayColorProfile>(mDisplayColorProfile));
+        mOutput.setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
+    }
+
+    static const Region kEmptyRegion;
+    static const Region kNotEmptyRegion;
+
+    StrictMock<OutputPartialMock> mOutput;
+    mock::DisplayColorProfile* mDisplayColorProfile = new StrictMock<mock::DisplayColorProfile>();
+    mock::RenderSurface* mRenderSurface = new StrictMock<mock::RenderSurface>();
+    CompositionRefreshArgs mRefreshArgs;
+};
+
+const Region OutputDevOptRepaintFlashTest::kEmptyRegion{Rect{0, 0, 0, 0}};
+const Region OutputDevOptRepaintFlashTest::kNotEmptyRegion{Rect{0, 0, 1, 1}};
+
+TEST_F(OutputDevOptRepaintFlashTest, doesNothingIfFlashDelayNotSet) {
+    mRefreshArgs.devOptFlashDirtyRegionsDelay = {};
+    mRefreshArgs.repaintEverything = true;
+    mOutput.mState.isEnabled = true;
+
+    mOutput.devOptRepaintFlash(mRefreshArgs);
+}
+
+TEST_F(OutputDevOptRepaintFlashTest, postsAndPreparesANewFrameIfNotEnabled) {
+    mRefreshArgs.devOptFlashDirtyRegionsDelay = std::chrono::microseconds(1);
+    mRefreshArgs.repaintEverything = true;
+    mOutput.mState.isEnabled = false;
+
+    InSequence seq;
+    EXPECT_CALL(mOutput, postFramebuffer());
+    EXPECT_CALL(mOutput, prepareFrame());
+
+    mOutput.devOptRepaintFlash(mRefreshArgs);
+}
+
+TEST_F(OutputDevOptRepaintFlashTest, postsAndPreparesANewFrameIfNotDirty) {
+    mRefreshArgs.devOptFlashDirtyRegionsDelay = std::chrono::microseconds(1);
+    mRefreshArgs.repaintEverything = true;
+    mOutput.mState.isEnabled = true;
+
+    InSequence seq;
+    EXPECT_CALL(mOutput, getDirtyRegion(true)).WillOnce(Return(kEmptyRegion));
+    EXPECT_CALL(mOutput, postFramebuffer());
+    EXPECT_CALL(mOutput, prepareFrame());
+
+    mOutput.devOptRepaintFlash(mRefreshArgs);
+}
+
+TEST_F(OutputDevOptRepaintFlashTest, alsoComposesSurfacesAndQueuesABufferIfDirty) {
+    mRefreshArgs.devOptFlashDirtyRegionsDelay = std::chrono::microseconds(1);
+    mRefreshArgs.repaintEverything = false;
+    mOutput.mState.isEnabled = true;
+
+    InSequence seq;
+    EXPECT_CALL(mOutput, getDirtyRegion(false)).WillOnce(Return(kNotEmptyRegion));
+    EXPECT_CALL(mOutput, composeSurfaces(RegionEq(kNotEmptyRegion)));
+    EXPECT_CALL(*mRenderSurface, queueBuffer(_));
+    EXPECT_CALL(mOutput, postFramebuffer());
+    EXPECT_CALL(mOutput, prepareFrame());
+
+    mOutput.devOptRepaintFlash(mRefreshArgs);
+}
+
+// TODO(b/144060211) - Add coverage
+
+/*
+ * Output::finishFrame()
+ */
+
+struct OutputFinishFrameTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD1(composeSurfaces, std::optional<base::unique_fd>(const Region&));
+        MOCK_METHOD0(postFramebuffer, void());
+    };
+
+    OutputFinishFrameTest() {
+        mOutput.setDisplayColorProfileForTest(
+                std::unique_ptr<DisplayColorProfile>(mDisplayColorProfile));
+        mOutput.setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
+    }
+
+    StrictMock<OutputPartialMock> mOutput;
+    mock::DisplayColorProfile* mDisplayColorProfile = new StrictMock<mock::DisplayColorProfile>();
+    mock::RenderSurface* mRenderSurface = new StrictMock<mock::RenderSurface>();
+    CompositionRefreshArgs mRefreshArgs;
+};
+
+TEST_F(OutputFinishFrameTest, ifNotEnabledDoesNothing) {
+    mOutput.mState.isEnabled = false;
+
+    mOutput.finishFrame(mRefreshArgs);
+}
+
+TEST_F(OutputFinishFrameTest, takesEarlyOutifComposeSurfacesReturnsNoFence) {
+    mOutput.mState.isEnabled = true;
+
+    InSequence seq;
+    EXPECT_CALL(mOutput, composeSurfaces(RegionEq(Region::INVALID_REGION)));
+
+    mOutput.finishFrame(mRefreshArgs);
+}
+
+TEST_F(OutputFinishFrameTest, queuesBufferIfComposeSurfacesReturnsAFence) {
+    mOutput.mState.isEnabled = true;
+
+    InSequence seq;
+    EXPECT_CALL(mOutput, composeSurfaces(RegionEq(Region::INVALID_REGION)))
+            .WillOnce(Return(ByMove(base::unique_fd())));
+    EXPECT_CALL(*mRenderSurface, queueBuffer(_));
+
+    mOutput.finishFrame(mRefreshArgs);
+}
+
+/*
+ * Output::postFramebuffer()
+ */
+
+struct OutputPostFramebufferTest : public testing::Test {
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
+        MOCK_METHOD0(presentAndGetFrameFences, compositionengine::Output::FrameFences());
+    };
+
+    struct Layer {
+        Layer() {
+            EXPECT_CALL(outputLayer, getLayerFE()).WillRepeatedly(ReturnRef(layerFE));
+            EXPECT_CALL(outputLayer, getHwcLayer()).WillRepeatedly(Return(&hwc2Layer));
+        }
+
+        StrictMock<mock::OutputLayer> outputLayer;
+        StrictMock<mock::LayerFE> layerFE;
+        StrictMock<HWC2::mock::Layer> hwc2Layer;
+    };
+
+    OutputPostFramebufferTest() {
+        mOutput.setDisplayColorProfileForTest(
+                std::unique_ptr<DisplayColorProfile>(mDisplayColorProfile));
+        mOutput.setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
+
+        EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(3u));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(0u))
+                .WillRepeatedly(Return(&mLayer1.outputLayer));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(1u))
+                .WillRepeatedly(Return(&mLayer2.outputLayer));
+        EXPECT_CALL(mOutput, getOutputLayerOrderedByZByIndex(2u))
+                .WillRepeatedly(Return(&mLayer3.outputLayer));
+    }
+
+    StrictMock<OutputPartialMock> mOutput;
+    mock::DisplayColorProfile* mDisplayColorProfile = new StrictMock<mock::DisplayColorProfile>();
+    mock::RenderSurface* mRenderSurface = new StrictMock<mock::RenderSurface>();
+
+    Layer mLayer1;
+    Layer mLayer2;
+    Layer mLayer3;
+};
+
+TEST_F(OutputPostFramebufferTest, ifNotEnabledDoesNothing) {
+    mOutput.mState.isEnabled = false;
+
+    mOutput.postFramebuffer();
+}
+
+TEST_F(OutputPostFramebufferTest, ifEnabledMustFlipThenPresentThenSendPresentCompleted) {
+    mOutput.mState.isEnabled = true;
+
+    compositionengine::Output::FrameFences frameFences;
+
+    // This should happen even if there are no output layers.
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+
+    // For this test in particular we want to make sure the call expectations
+    // setup below are satisfied in the specific order.
+    InSequence seq;
+
+    EXPECT_CALL(*mRenderSurface, flip());
+    EXPECT_CALL(mOutput, presentAndGetFrameFences()).WillOnce(Return(frameFences));
+    EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
+
+    mOutput.postFramebuffer();
+}
+
+TEST_F(OutputPostFramebufferTest, releaseFencesAreSentToLayerFE) {
+    // Simulate getting release fences from each layer, and ensure they are passed to the
+    // front-end layer interface for each layer correctly.
+
+    mOutput.mState.isEnabled = true;
+
+    // Create three unique fence instances
+    sp<Fence> layer1Fence = new Fence();
+    sp<Fence> layer2Fence = new Fence();
+    sp<Fence> layer3Fence = new Fence();
+
+    Output::FrameFences frameFences;
+    frameFences.layerFences.emplace(&mLayer1.hwc2Layer, layer1Fence);
+    frameFences.layerFences.emplace(&mLayer2.hwc2Layer, layer2Fence);
+    frameFences.layerFences.emplace(&mLayer3.hwc2Layer, layer3Fence);
+
+    EXPECT_CALL(*mRenderSurface, flip());
+    EXPECT_CALL(mOutput, presentAndGetFrameFences()).WillOnce(Return(frameFences));
+    EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
+
+    // Compare the pointers values of each fence to make sure the correct ones
+    // are passed. This happens to work with the current implementation, but
+    // would not survive certain calls like Fence::merge() which would return a
+    // new instance.
+    EXPECT_CALL(mLayer1.layerFE,
+                onLayerDisplayed(Property(&sp<Fence>::get, Eq(layer1Fence.get()))));
+    EXPECT_CALL(mLayer2.layerFE,
+                onLayerDisplayed(Property(&sp<Fence>::get, Eq(layer2Fence.get()))));
+    EXPECT_CALL(mLayer3.layerFE,
+                onLayerDisplayed(Property(&sp<Fence>::get, Eq(layer3Fence.get()))));
+
+    mOutput.postFramebuffer();
+}
+
+TEST_F(OutputPostFramebufferTest, releaseFencesIncludeClientTargetAcquireFence) {
+    mOutput.mState.isEnabled = true;
+    mOutput.mState.usesClientComposition = true;
+
+    sp<Fence> clientTargetAcquireFence = new Fence();
+    sp<Fence> layer1Fence = new Fence();
+    sp<Fence> layer2Fence = new Fence();
+    sp<Fence> layer3Fence = new Fence();
+    Output::FrameFences frameFences;
+    frameFences.clientTargetAcquireFence = clientTargetAcquireFence;
+    frameFences.layerFences.emplace(&mLayer1.hwc2Layer, layer1Fence);
+    frameFences.layerFences.emplace(&mLayer2.hwc2Layer, layer2Fence);
+    frameFences.layerFences.emplace(&mLayer3.hwc2Layer, layer3Fence);
+
+    EXPECT_CALL(*mRenderSurface, flip());
+    EXPECT_CALL(mOutput, presentAndGetFrameFences()).WillOnce(Return(frameFences));
+    EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
+
+    // Fence::merge is called, and since none of the fences are actually valid,
+    // Fence::NO_FENCE is returned and passed to each onLayerDisplayed() call.
+    // This is the best we can do without creating a real kernel fence object.
+    EXPECT_CALL(mLayer1.layerFE, onLayerDisplayed(Fence::NO_FENCE));
+    EXPECT_CALL(mLayer2.layerFE, onLayerDisplayed(Fence::NO_FENCE));
+    EXPECT_CALL(mLayer3.layerFE, onLayerDisplayed(Fence::NO_FENCE));
+
+    mOutput.postFramebuffer();
+}
+
+TEST_F(OutputPostFramebufferTest, releasedLayersSentPresentFence) {
+    mOutput.mState.isEnabled = true;
+    mOutput.mState.usesClientComposition = true;
+
+    // This should happen even if there are no (current) output layers.
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+
+    // Load up the released layers with some mock instances
+    sp<StrictMock<mock::LayerFE>> releasedLayer1{new StrictMock<mock::LayerFE>()};
+    sp<StrictMock<mock::LayerFE>> releasedLayer2{new StrictMock<mock::LayerFE>()};
+    sp<StrictMock<mock::LayerFE>> releasedLayer3{new StrictMock<mock::LayerFE>()};
+    Output::ReleasedLayers layers;
+    layers.push_back(releasedLayer1);
+    layers.push_back(releasedLayer2);
+    layers.push_back(releasedLayer3);
+    mOutput.setReleasedLayers(std::move(layers));
+
+    // Set up a fake present fence
+    sp<Fence> presentFence = new Fence();
+    Output::FrameFences frameFences;
+    frameFences.presentFence = presentFence;
+
+    EXPECT_CALL(*mRenderSurface, flip());
+    EXPECT_CALL(mOutput, presentAndGetFrameFences()).WillOnce(Return(frameFences));
+    EXPECT_CALL(*mRenderSurface, onPresentDisplayCompleted());
+
+    // Each released layer should be given the presentFence.
+    EXPECT_CALL(*releasedLayer1,
+                onLayerDisplayed(Property(&sp<Fence>::get, Eq(presentFence.get()))));
+    EXPECT_CALL(*releasedLayer2,
+                onLayerDisplayed(Property(&sp<Fence>::get, Eq(presentFence.get()))));
+    EXPECT_CALL(*releasedLayer3,
+                onLayerDisplayed(Property(&sp<Fence>::get, Eq(presentFence.get()))));
+
+    mOutput.postFramebuffer();
+
+    // After the call the list of released layers should have been cleared.
+    EXPECT_TRUE(mOutput.getReleasedLayersForTest().empty());
+}
+
+/*
  * Output::composeSurfaces()
  */
 
@@ -598,38 +2676,15 @@
     static const Rect kDefaultOutputScissor;
     static const mat4 kDefaultColorTransformMat;
 
-    struct OutputPartialMock : public impl::Output {
-        // Sets up the helper functions called by composeSurfaces to use a mock
-        // implementations.
+    struct OutputPartialMock : public OutputPartialMockBase {
+        // Sets up the helper functions called by the function under test to use
+        // mock implementations.
         MOCK_CONST_METHOD0(getSkipColorTransform, bool());
-        MOCK_METHOD2(generateClientCompositionRequests,
-                     std::vector<renderengine::LayerSettings>(bool, Region&));
+        MOCK_METHOD3(generateClientCompositionRequests,
+                     std::vector<renderengine::LayerSettings>(bool, Region&, ui::Dataspace));
         MOCK_METHOD2(appendRegionFlashRequests,
                      void(const Region&, std::vector<renderengine::LayerSettings>&));
         MOCK_METHOD1(setExpensiveRenderingExpected, void(bool));
-
-        // compositionengine::Output overrides
-        const OutputCompositionState& getState() const override { return mState; }
-        OutputCompositionState& editState() override { return mState; }
-
-        // These need implementations though are not expected to be called.
-        MOCK_CONST_METHOD0(getOutputLayerCount, size_t());
-        MOCK_CONST_METHOD1(getOutputLayerOrderedByZByIndex,
-                           compositionengine::OutputLayer*(size_t));
-        MOCK_METHOD3(ensureOutputLayer,
-                     compositionengine::OutputLayer*(
-                             std::optional<size_t>,
-                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
-        MOCK_METHOD0(finalizePendingOutputLayers, void());
-        MOCK_METHOD0(clearOutputLayers, void());
-        MOCK_CONST_METHOD1(dumpState, void(std::string&));
-        MOCK_CONST_METHOD0(getCompositionEngine, const CompositionEngine&());
-        MOCK_METHOD2(injectOutputLayerForTest,
-                     compositionengine::OutputLayer*(
-                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
-        MOCK_METHOD1(injectOutputLayerForTest, void(std::unique_ptr<OutputLayer>));
-
-        impl::OutputCompositionState mState;
     };
 
     OutputComposeSurfacesTest() {
@@ -708,7 +2763,7 @@
     EXPECT_CALL(*mRenderSurface, dequeueBuffer(_)).WillOnce(Return(mOutputBuffer));
 
     EXPECT_CALL(mOutput, getSkipColorTransform()).WillOnce(Return(false));
-    EXPECT_CALL(mOutput, generateClientCompositionRequests(false, _)).Times(1);
+    EXPECT_CALL(mOutput, generateClientCompositionRequests(false, _, _)).Times(1);
     EXPECT_CALL(mOutput, appendRegionFlashRequests(RegionEq(kDebugRegion), _)).Times(1);
     EXPECT_CALL(mOutput, setExpensiveRenderingExpected(true)).Times(1);
     EXPECT_CALL(mOutput, setExpensiveRenderingExpected(false)).Times(1);
@@ -722,36 +2777,14 @@
  */
 
 struct GenerateClientCompositionRequestsTest : public testing::Test {
-    struct OutputPartialMock : public impl::Output {
+    struct OutputPartialMock : public OutputPartialMockBase {
         // compositionengine::Output overrides
-
         std::vector<renderengine::LayerSettings> generateClientCompositionRequests(
-                bool supportsProtectedContent, Region& clearRegion) override {
+                bool supportsProtectedContent, Region& clearRegion,
+                ui::Dataspace dataspace) override {
             return impl::Output::generateClientCompositionRequests(supportsProtectedContent,
-                                                                   clearRegion);
+                                                                   clearRegion, dataspace);
         }
-
-        const OutputCompositionState& getState() const override { return mState; }
-        OutputCompositionState& editState() override { return mState; }
-
-        // These need implementations though are not expected to be called.
-        MOCK_CONST_METHOD0(getOutputLayerCount, size_t());
-        MOCK_CONST_METHOD1(getOutputLayerOrderedByZByIndex,
-                           compositionengine::OutputLayer*(size_t));
-        MOCK_METHOD3(ensureOutputLayer,
-                     compositionengine::OutputLayer*(
-                             std::optional<size_t>,
-                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
-        MOCK_METHOD0(finalizePendingOutputLayers, void());
-        MOCK_METHOD0(clearOutputLayers, void());
-        MOCK_CONST_METHOD1(dumpState, void(std::string&));
-        MOCK_CONST_METHOD0(getCompositionEngine, const CompositionEngine&());
-        MOCK_METHOD2(injectOutputLayerForTest,
-                     compositionengine::OutputLayer*(
-                             const std::shared_ptr<compositionengine::Layer>&, const sp<LayerFE>&));
-        MOCK_METHOD1(injectOutputLayerForTest, void(std::unique_ptr<OutputLayer>));
-
-        impl::OutputCompositionState mState;
     };
 
     GenerateClientCompositionRequestsTest() {
@@ -809,6 +2842,8 @@
     EXPECT_CALL(leftOutputLayer, needsFiltering()).WillRepeatedly(Return(false));
     EXPECT_CALL(leftLayer, getFEState()).WillRepeatedly(ReturnRef(leftLayerFEState));
     EXPECT_CALL(leftLayerFE, prepareClientComposition(_)).WillOnce(Return(leftLayerRESettings));
+    EXPECT_CALL(leftLayerFE, prepareShadowClientComposition(_, _, _))
+            .WillOnce(Return(std::optional<renderengine::LayerSettings>()));
     EXPECT_CALL(leftOutputLayer, editState()).WillRepeatedly(ReturnRef(leftOutputLayerState));
 
     EXPECT_CALL(rightOutputLayer, getState()).WillRepeatedly(ReturnRef(rightOutputLayerState));
@@ -818,6 +2853,8 @@
     EXPECT_CALL(rightOutputLayer, needsFiltering()).WillRepeatedly(Return(false));
     EXPECT_CALL(rightLayer, getFEState()).WillRepeatedly(ReturnRef(rightLayerFEState));
     EXPECT_CALL(rightLayerFE, prepareClientComposition(_)).WillOnce(Return(rightLayerRESettings));
+    EXPECT_CALL(rightLayerFE, prepareShadowClientComposition(_, _, _))
+            .WillOnce(Return(std::optional<renderengine::LayerSettings>()));
     EXPECT_CALL(rightOutputLayer, editState()).WillRepeatedly(ReturnRef(rightOutputLayerState));
 
     EXPECT_CALL(mOutput, getOutputLayerCount()).WillRepeatedly(Return(2u));
@@ -841,8 +2878,8 @@
 
     constexpr bool supportsProtectedContent = false;
     Region clearRegion;
-    auto requests =
-            mOutput.generateClientCompositionRequests(supportsProtectedContent, clearRegion);
+    auto requests = mOutput.generateClientCompositionRequests(supportsProtectedContent, clearRegion,
+                                                              mOutput.getState().targetDataspace);
 
     ASSERT_EQ(2u, requests.size());
     EXPECT_EQ(leftLayerColor, requests[0].source.solidColor);
@@ -891,8 +2928,8 @@
 
     constexpr bool supportsProtectedContent = false;
     Region clearRegion;
-    auto requests =
-            mOutput.generateClientCompositionRequests(supportsProtectedContent, clearRegion);
+    auto requests = mOutput.generateClientCompositionRequests(supportsProtectedContent, clearRegion,
+                                                              mOutput.getState().targetDataspace);
 
     EXPECT_EQ(0u, requests.size());
 }
@@ -969,8 +3006,8 @@
 
     constexpr bool supportsProtectedContent = false;
     Region clearRegion;
-    auto requests =
-            mOutput.generateClientCompositionRequests(supportsProtectedContent, clearRegion);
+    auto requests = mOutput.generateClientCompositionRequests(supportsProtectedContent, clearRegion,
+                                                              mOutput.getState().targetDataspace);
 
     const half3 clearColor{0.f, 0.f, 0.f};
 
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index 89123df..84ec597 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -132,11 +132,11 @@
 }
 
 // ----------------------------------------------------------------------------
-void DisplayDevice::setActiveConfig(int mode) {
+void DisplayDevice::setActiveConfig(HwcConfigIndexType mode) {
     mActiveConfig = mode;
 }
 
-int DisplayDevice::getActiveConfig()  const {
+HwcConfigIndexType DisplayDevice::getActiveConfig() const {
     return mActiveConfig;
 }
 
@@ -285,7 +285,7 @@
 
     result.append("   ");
     StringAppendF(&result, "powerMode=%d, ", mPowerMode);
-    StringAppendF(&result, "activeConfig=%d, ", mActiveConfig);
+    StringAppendF(&result, "activeConfig=%d, ", mActiveConfig.value());
     getCompositionDisplay()->dump(result);
 }
 
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
index ce4e1e6..79a1185 100644
--- a/services/surfaceflinger/DisplayDevice.h
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -43,6 +43,7 @@
 #include "DisplayHardware/DisplayIdentification.h"
 #include "DisplayHardware/PowerAdvisor.h"
 #include "RenderArea.h"
+#include "Scheduler/HwcStrongTypes.h"
 
 namespace android {
 
@@ -141,8 +142,8 @@
     /* ------------------------------------------------------------------------
      * Display active config management.
      */
-    int getActiveConfig() const;
-    void setActiveConfig(int mode);
+    HwcConfigIndexType getActiveConfig() const;
+    void setActiveConfig(HwcConfigIndexType mode);
 
     // release HWC resources (if any) for removable displays
     void disconnect();
@@ -186,7 +187,7 @@
     // Current power mode
     int mPowerMode;
     // Current active config
-    int mActiveConfig;
+    HwcConfigIndexType mActiveConfig;
 
     // TODO(b/74619554): Remove special cases for primary display.
     const bool mIsPrimary;
@@ -246,6 +247,7 @@
                       uint32_t reqHeight, ui::Dataspace reqDataSpace,
                       ui::Transform::orientation_flags rotation, bool allowSecureLayers = true)
           : RenderArea(reqWidth, reqHeight, CaptureFill::OPAQUE, reqDataSpace,
+                       device->getViewport(),
                        getDisplayRotation(rotation, device->getInstallOrientation())),
             mDevice(device),
             mSourceCrop(sourceCrop),
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index aef1c75..dc71128 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -95,7 +95,7 @@
 
 // assume NO_RESOURCES when Status::isOk returns false
 constexpr Error kDefaultError = Error::NO_RESOURCES;
-constexpr V2_4::Error kDefaultError_2_4 = V2_4::Error::NO_RESOURCES;
+constexpr V2_4::Error kDefaultError_2_4 = static_cast<V2_4::Error>(kDefaultError);
 
 template<typename T, typename U>
 T unwrapRet(Return<T>& ret, const U& default_val)
@@ -247,7 +247,12 @@
 void Composer::registerCallback(const sp<IComposerCallback>& callback)
 {
     android::hardware::setMinSchedulerPolicy(callback, SCHED_FIFO, 2);
-    auto ret = mClient->registerCallback(callback);
+    auto ret = [&]() {
+        if (mClient_2_4) {
+            return mClient_2_4->registerCallback_2_4(callback);
+        }
+        return mClient->registerCallback(callback);
+    }();
     if (!ret.isOk()) {
         ALOGE("failed to register IComposerCallback");
     }
@@ -413,15 +418,28 @@
         IComposerClient::Attribute attribute, int32_t* outValue)
 {
     Error error = kDefaultError;
-    mClient->getDisplayAttribute(display, config, attribute,
-            [&](const auto& tmpError, const auto& tmpValue) {
-                error = tmpError;
-                if (error != Error::NONE) {
-                    return;
-                }
+    if (mClient_2_4) {
+        mClient_2_4->getDisplayAttribute_2_4(display, config, attribute,
+                                             [&](const auto& tmpError, const auto& tmpValue) {
+                                                 error = static_cast<Error>(tmpError);
+                                                 if (error != Error::NONE) {
+                                                     return;
+                                                 }
 
-                *outValue = tmpValue;
-            });
+                                                 *outValue = tmpValue;
+                                             });
+    } else {
+        mClient->getDisplayAttribute(display, config,
+                                     static_cast<V2_1::IComposerClient::Attribute>(attribute),
+                                     [&](const auto& tmpError, const auto& tmpValue) {
+                                         error = tmpError;
+                                         if (error != Error::NONE) {
+                                             return;
+                                         }
+
+                                         *outValue = tmpValue;
+                                     });
+    }
 
     return error;
 }
@@ -1200,13 +1218,14 @@
     return static_cast<Error>(error);
 }
 
-Error Composer::getDisplayConnectionType(Display display,
-                                         IComposerClient::DisplayConnectionType* outType) {
+V2_4::Error Composer::getDisplayConnectionType(Display display,
+                                               IComposerClient::DisplayConnectionType* outType) {
+    using Error = V2_4::Error;
     if (!mClient_2_4) {
         return Error::UNSUPPORTED;
     }
 
-    V2_4::Error error = kDefaultError_2_4;
+    Error error = kDefaultError_2_4;
     mClient_2_4->getDisplayConnectionType(display, [&](const auto& tmpError, const auto& tmpType) {
         error = tmpError;
         if (error != V2_4::Error::NONE) {
@@ -1216,7 +1235,50 @@
         *outType = tmpType;
     });
 
-    return static_cast<V2_1::Error>(error);
+    return error;
+}
+
+V2_4::Error Composer::getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) {
+    using Error = V2_4::Error;
+    if (!mClient_2_4) {
+        return Error::UNSUPPORTED;
+    }
+
+    Error error = kDefaultError_2_4;
+    mClient_2_4->getDisplayVsyncPeriod(display,
+                                       [&](const auto& tmpError, const auto& tmpVsyncPeriod) {
+                                           error = tmpError;
+                                           if (error != Error::NONE) {
+                                               return;
+                                           }
+
+                                           *outVsyncPeriod = tmpVsyncPeriod;
+                                       });
+
+    return error;
+}
+
+V2_4::Error Composer::setActiveConfigWithConstraints(
+        Display display, Config config,
+        const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+        VsyncPeriodChangeTimeline* outTimeline) {
+    using Error = V2_4::Error;
+    if (!mClient_2_4) {
+        return Error::UNSUPPORTED;
+    }
+
+    Error error = kDefaultError_2_4;
+    mClient_2_4->setActiveConfigWithConstraints(display, config, vsyncPeriodChangeConstraints,
+                                                [&](const auto& tmpError, const auto& tmpTimeline) {
+                                                    error = tmpError;
+                                                    if (error != Error::NONE) {
+                                                        return;
+                                                    }
+
+                                                    *outTimeline = tmpTimeline;
+                                                });
+
+    return error;
 }
 
 CommandReader::~CommandReader()
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index e743e59..336fdd8 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -62,12 +62,14 @@
 using V2_1::Config;
 using V2_1::Display;
 using V2_1::Error;
-using V2_1::IComposerCallback;
 using V2_1::Layer;
 using V2_3::CommandReaderBase;
 using V2_3::CommandWriterBase;
 using V2_4::IComposer;
+using V2_4::IComposerCallback;
 using V2_4::IComposerClient;
+using V2_4::VsyncPeriodChangeTimeline;
+using V2_4::VsyncPeriodNanos;
 using DisplayCapability = IComposerClient::DisplayCapability;
 using PerFrameMetadata = IComposerClient::PerFrameMetadata;
 using PerFrameMetadataKey = IComposerClient::PerFrameMetadataKey;
@@ -208,10 +210,17 @@
     virtual Error setDisplayBrightness(Display display, float brightness) = 0;
 
     // Composer HAL 2.4
+    virtual bool isVsyncPeriodSwitchSupported() = 0;
     virtual Error getDisplayCapabilities(Display display,
                                          std::vector<DisplayCapability>* outCapabilities) = 0;
-    virtual Error getDisplayConnectionType(Display display,
-                                           IComposerClient::DisplayConnectionType* outType) = 0;
+    virtual V2_4::Error getDisplayConnectionType(
+            Display display, IComposerClient::DisplayConnectionType* outType) = 0;
+    virtual V2_4::Error getDisplayVsyncPeriod(Display display,
+                                              VsyncPeriodNanos* outVsyncPeriod) = 0;
+    virtual V2_4::Error setActiveConfigWithConstraints(
+            Display display, Config config,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            VsyncPeriodChangeTimeline* outTimeline) = 0;
 };
 
 namespace impl {
@@ -423,10 +432,16 @@
     Error setDisplayBrightness(Display display, float brightness) override;
 
     // Composer HAL 2.4
+    bool isVsyncPeriodSwitchSupported() override { return mClient_2_4 != nullptr; }
     Error getDisplayCapabilities(Display display,
                                  std::vector<DisplayCapability>* outCapabilities) override;
-    Error getDisplayConnectionType(Display display,
-                                   IComposerClient::DisplayConnectionType* outType) override;
+    V2_4::Error getDisplayConnectionType(Display display,
+                                         IComposerClient::DisplayConnectionType* outType) override;
+    V2_4::Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) override;
+    V2_4::Error setActiveConfigWithConstraints(
+            Display display, Config config,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            VsyncPeriodChangeTimeline* outTimeline) override;
 
 private:
 #if defined(USE_VR_COMPOSER) && USE_VR_COMPOSER
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index 6f7428a..34254e0 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -81,7 +81,26 @@
 
     Return<void> onVsync(Hwc2::Display display, int64_t timestamp) override
     {
-        mCallback->onVsyncReceived(mSequenceId, display, timestamp);
+        mCallback->onVsyncReceived(mSequenceId, display, timestamp, std::nullopt);
+        return Void();
+    }
+
+    Return<void> onVsync_2_4(Hwc2::Display display, int64_t timestamp,
+                             Hwc2::VsyncPeriodNanos vsyncPeriodNanos) override {
+        // TODO(b/140201379): use vsyncPeriodNanos in the new DispSync
+        mCallback->onVsyncReceived(mSequenceId, display, timestamp,
+                                   std::make_optional(vsyncPeriodNanos));
+        return Void();
+    }
+
+    Return<void> onVsyncPeriodTimingChanged(
+            Hwc2::Display display,
+            const Hwc2::VsyncPeriodChangeTimeline& updatedTimeline) override {
+        hwc_vsync_period_change_timeline_t timeline;
+        timeline.newVsyncAppliedTimeNanos = updatedTimeline.newVsyncAppliedTimeNanos;
+        timeline.refreshRequired = updatedTimeline.refreshRequired;
+        timeline.refreshTimeNanos = updatedTimeline.refreshTimeNanos;
+        mCallback->onVsyncPeriodTimingChangedReceived(mSequenceId, display, timeline);
         return Void();
     }
 
@@ -330,6 +349,36 @@
     return Error::None;
 }
 
+bool Display::isVsyncPeriodSwitchSupported() const {
+    ALOGV("[%" PRIu64 "] isVsyncPeriodSwitchSupported()", mId);
+
+    return mComposer.isVsyncPeriodSwitchSupported();
+}
+
+Error Display::getDisplayVsyncPeriod(nsecs_t* outVsyncPeriod) const {
+    ALOGV("[%" PRIu64 "] getDisplayVsyncPeriod", mId);
+
+    Error error;
+
+    if (isVsyncPeriodSwitchSupported()) {
+        Hwc2::VsyncPeriodNanos vsyncPeriodNanos = 0;
+        auto intError = mComposer.getDisplayVsyncPeriod(mId, &vsyncPeriodNanos);
+        error = static_cast<Error>(intError);
+        *outVsyncPeriod = static_cast<nsecs_t>(vsyncPeriodNanos);
+    } else {
+        // Get the default vsync period
+        hwc2_config_t configId = 0;
+        auto intError_2_1 = mComposer.getActiveConfig(mId, &configId);
+        error = static_cast<Error>(intError_2_1);
+        if (error == Error::None) {
+            auto config = mConfigs.at(configId);
+            *outVsyncPeriod = config->getVsyncPeriod();
+        }
+    }
+
+    return error;
+}
+
 Error Display::getActiveConfigIndex(int* outIndex) const {
     ALOGV("[%" PRIu64 "] getActiveConfigIndex", mId);
     hwc2_config_t configId = 0;
@@ -345,6 +394,7 @@
     auto pos = mConfigs.find(configId);
     if (pos != mConfigs.end()) {
         *outIndex = std::distance(mConfigs.begin(), pos);
+        ALOGV("[%" PRIu64 "] index = %d", mId, *outIndex);
     } else {
         ALOGE("[%" PRIu64 "] getActiveConfig returned unknown config %u", mId, configId);
         // Return no error, but the caller needs to check for a negative index
@@ -582,6 +632,46 @@
     return Error::None;
 }
 
+Error Display::setActiveConfigWithConstraints(
+        const std::shared_ptr<const HWC2::Display::Config>& config,
+        const VsyncPeriodChangeConstraints& constraints, VsyncPeriodChangeTimeline* outTimeline) {
+    ALOGV("[%" PRIu64 "] setActiveConfigWithConstraints", mId);
+    if (config->getDisplayId() != mId) {
+        ALOGE("setActiveConfigWithConstraints received config %u for the wrong display %" PRIu64
+              " (expected %" PRIu64 ")",
+              config->getId(), config->getDisplayId(), mId);
+        return Error::BadConfig;
+    }
+
+    if (isVsyncPeriodSwitchSupported()) {
+        Hwc2::IComposerClient::VsyncPeriodChangeConstraints hwc2Constraints;
+        hwc2Constraints.desiredTimeNanos = constraints.desiredTimeNanos;
+        hwc2Constraints.seamlessRequired = constraints.seamlessRequired;
+
+        Hwc2::VsyncPeriodChangeTimeline vsyncPeriodChangeTimeline = {};
+        auto intError =
+                mComposer.setActiveConfigWithConstraints(mId, config->getId(), hwc2Constraints,
+                                                         &vsyncPeriodChangeTimeline);
+        outTimeline->newVsyncAppliedTimeNanos = vsyncPeriodChangeTimeline.newVsyncAppliedTimeNanos;
+        outTimeline->refreshRequired = vsyncPeriodChangeTimeline.refreshRequired;
+        outTimeline->refreshTimeNanos = vsyncPeriodChangeTimeline.refreshTimeNanos;
+        return static_cast<Error>(intError);
+    }
+
+    // Use legacy setActiveConfig instead
+    ALOGV("fallback to legacy setActiveConfig");
+    const auto now = systemTime();
+    if (constraints.desiredTimeNanos > now || constraints.seamlessRequired) {
+        ALOGE("setActiveConfigWithConstraints received constraints that can't be satisfied");
+    }
+
+    auto intError_2_4 = mComposer.setActiveConfig(mId, config->getId());
+    outTimeline->newVsyncAppliedTimeNanos = std::max(now, constraints.desiredTimeNanos);
+    outTimeline->refreshRequired = true;
+    outTimeline->refreshTimeNanos = now;
+    return static_cast<Error>(intError_2_4);
+}
+
 Error Display::setActiveConfig(const std::shared_ptr<const Config>& config)
 {
     if (config->getDisplayId() != mId) {
@@ -742,12 +832,13 @@
     ALOGV("[%" PRIu64 "] loadConfig(%u)", mId, configId);
 
     auto config = Config::Builder(*this, configId)
-            .setWidth(getAttribute(configId, Attribute::Width))
-            .setHeight(getAttribute(configId, Attribute::Height))
-            .setVsyncPeriod(getAttribute(configId, Attribute::VsyncPeriod))
-            .setDpiX(getAttribute(configId, Attribute::DpiX))
-            .setDpiY(getAttribute(configId, Attribute::DpiY))
-            .build();
+                          .setWidth(getAttribute(configId, Attribute::Width))
+                          .setHeight(getAttribute(configId, Attribute::Height))
+                          .setVsyncPeriod(getAttribute(configId, Attribute::VsyncPeriod))
+                          .setDpiX(getAttribute(configId, Attribute::DpiX))
+                          .setDpiY(getAttribute(configId, Attribute::DpiY))
+                          .setConfigGroup(getAttribute(configId, Attribute::ConfigGroup))
+                          .build();
     mConfigs.emplace(configId, std::move(config));
 }
 
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index b7cdf7f..81ae3b6 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -38,6 +38,8 @@
 #include <unordered_set>
 #include <vector>
 
+#include "../Scheduler/StrongTyping.h"
+
 namespace android {
     struct DisplayedFrameStats;
     class Fence;
@@ -54,6 +56,8 @@
 
 class Display;
 class Layer;
+using VsyncPeriodChangeConstraints = hwc_vsync_period_change_constraints_t;
+using VsyncPeriodChangeTimeline = hwc_vsync_period_change_timeline_t;
 
 // Implement this interface to receive hardware composer events.
 //
@@ -70,8 +74,12 @@
                                    Connection connection) = 0;
     virtual void onRefreshReceived(int32_t sequenceId,
                                    hwc2_display_t display) = 0;
-    virtual void onVsyncReceived(int32_t sequenceId, hwc2_display_t display,
-                                 int64_t timestamp) = 0;
+    virtual void onVsyncReceived(int32_t sequenceId, hwc2_display_t display, int64_t timestamp,
+                                 std::optional<hwc2_vsync_period_t> vsyncPeriod) = 0;
+    virtual void onVsyncPeriodTimingChangedReceived(
+            int32_t sequenceId, hwc2_display_t display,
+            const hwc_vsync_period_change_timeline_t& updatedTimeline) = 0;
+
     virtual ~ComposerCallback() = default;
 };
 
@@ -170,6 +178,10 @@
                 }
                 return *this;
             }
+            Builder& setConfigGroup(int32_t configGroup) {
+                mConfig->mConfigGroup = configGroup;
+                return *this;
+            }
 
         private:
             float getDefaultDensity();
@@ -184,6 +196,7 @@
         nsecs_t getVsyncPeriod() const { return mVsyncPeriod; }
         float getDpiX() const { return mDpiX; }
         float getDpiY() const { return mDpiY; }
+        int32_t getConfigGroup() const { return mConfigGroup; }
 
     private:
         Config(Display& display, hwc2_config_t id);
@@ -196,12 +209,14 @@
         nsecs_t mVsyncPeriod;
         float mDpiX;
         float mDpiY;
+        int32_t mConfigGroup;
     };
 
     virtual hwc2_display_t getId() const = 0;
     virtual bool isConnected() const = 0;
     virtual void setConnected(bool connected) = 0; // For use by Device only
     virtual const std::unordered_set<DisplayCapability>& getCapabilities() const = 0;
+    virtual bool isVsyncPeriodSwitchSupported() const = 0;
 
     [[clang::warn_unused_result]] virtual Error acceptChanges() = 0;
     [[clang::warn_unused_result]] virtual Error createLayer(Layer** outLayer) = 0;
@@ -264,6 +279,12 @@
             uint32_t* outNumTypes, uint32_t* outNumRequests,
             android::sp<android::Fence>* outPresentFence, uint32_t* state) = 0;
     [[clang::warn_unused_result]] virtual Error setDisplayBrightness(float brightness) const = 0;
+    [[clang::warn_unused_result]] virtual Error getDisplayVsyncPeriod(
+            nsecs_t* outVsyncPeriod) const = 0;
+    [[clang::warn_unused_result]] virtual Error setActiveConfigWithConstraints(
+            const std::shared_ptr<const HWC2::Display::Config>& config,
+            const VsyncPeriodChangeConstraints& constraints,
+            VsyncPeriodChangeTimeline* outTimeline) = 0;
 };
 
 namespace impl {
@@ -323,6 +344,10 @@
     Error presentOrValidate(uint32_t* outNumTypes, uint32_t* outNumRequests,
                             android::sp<android::Fence>* outPresentFence, uint32_t* state) override;
     Error setDisplayBrightness(float brightness) const override;
+    Error getDisplayVsyncPeriod(nsecs_t* outVsyncPeriod) const override;
+    Error setActiveConfigWithConstraints(const std::shared_ptr<const HWC2::Display::Config>& config,
+                                         const VsyncPeriodChangeConstraints& constraints,
+                                         VsyncPeriodChangeTimeline* outTimeline) override;
 
     // Other Display methods
     hwc2_display_t getId() const override { return mId; }
@@ -331,6 +356,7 @@
     const std::unordered_set<DisplayCapability>& getCapabilities() const override {
         return mDisplayCapabilities;
     };
+    virtual bool isVsyncPeriodSwitchSupported() const override;
 
 private:
     int32_t getAttribute(hwc2_config_t configId, Attribute attribute);
@@ -355,7 +381,9 @@
     bool mIsConnected;
     DisplayType mType;
     std::unordered_map<hwc2_layer_t, std::unique_ptr<Layer>> mLayers;
+
     std::unordered_map<hwc2_config_t, std::shared_ptr<const Config>> mConfigs;
+
     std::once_flag mDisplayCapabilityQueryFlag;
     std::unordered_set<DisplayCapability> mDisplayCapabilities;
 };
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index ce9aab5..35fc4be 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -571,6 +571,53 @@
     return layerSettings;
 }
 
+std::optional<renderengine::LayerSettings> Layer::prepareShadowClientComposition(
+        const renderengine::LayerSettings& casterLayerSettings, const Rect& displayViewport,
+        ui::Dataspace outputDataspace) {
+    renderengine::ShadowSettings shadow = getShadowSettings(displayViewport);
+    if (shadow.length <= 0.f) {
+        return {};
+    }
+
+    const float casterAlpha = casterLayerSettings.alpha;
+    const bool casterIsOpaque = ((casterLayerSettings.source.buffer.buffer != nullptr) &&
+                                 casterLayerSettings.source.buffer.isOpaque);
+
+    renderengine::LayerSettings shadowLayer = casterLayerSettings;
+    shadowLayer.shadow = shadow;
+
+    // If the casting layer is translucent, we need to fill in the shadow underneath the layer.
+    // Otherwise the generated shadow will only be shown around the casting layer.
+    shadowLayer.shadow.casterIsTranslucent = !casterIsOpaque || (casterAlpha < 1.0f);
+    shadowLayer.shadow.ambientColor *= casterAlpha;
+    shadowLayer.shadow.spotColor *= casterAlpha;
+    shadowLayer.sourceDataspace = outputDataspace;
+    shadowLayer.source.buffer.buffer = nullptr;
+
+    if (shadowLayer.shadow.ambientColor.a <= 0.f && shadowLayer.shadow.spotColor.a <= 0.f) {
+        return {};
+    }
+
+    float casterCornerRadius = shadowLayer.geometry.roundedCornersRadius;
+    const FloatRect& cornerRadiusCropRect = casterLayerSettings.geometry.roundedCornersCrop;
+    const FloatRect& casterRect = shadowLayer.geometry.boundaries;
+
+    // crop used to set the corner radius may be larger than the content rect. Adjust the corner
+    // radius accordingly.
+    if (casterCornerRadius > 0.f) {
+        float cropRectOffset = std::max(std::abs(cornerRadiusCropRect.top - casterRect.top),
+                                        std::abs(cornerRadiusCropRect.left - casterRect.left));
+        if (cropRectOffset > casterCornerRadius) {
+            casterCornerRadius = 0;
+        } else {
+            casterCornerRadius -= cropRectOffset;
+        }
+        shadowLayer.geometry.roundedCornersRadius = casterCornerRadius;
+    }
+
+    return shadowLayer;
+}
+
 Hwc2::IComposerClient::Composition Layer::getCompositionType(
         const sp<const DisplayDevice>& display) const {
     const auto outputLayer = findOutputLayerForDisplay(display);
@@ -1800,6 +1847,18 @@
             : RoundedCornerState();
 }
 
+renderengine::ShadowSettings Layer::getShadowSettings(const Rect& viewport) const {
+    renderengine::ShadowSettings state = mFlinger->mDrawingState.globalShadowSettings;
+
+    // Shift the spot light x-position to the middle of the display and then
+    // offset it by casting layer's screen pos.
+    state.lightPos.x = (viewport.width() / 2.f) - mScreenBounds.left;
+    state.lightPos.y -= mScreenBounds.top;
+
+    state.length = mEffectiveShadowRadius;
+    return state;
+}
+
 void Layer::commitChildList() {
     for (size_t i = 0; i < mCurrentChildren.size(); i++) {
         const auto& child = mCurrentChildren[i];
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 286311b..843d3ae 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -216,6 +216,9 @@
         std::deque<sp<CallbackHandle>> callbackHandles;
         bool colorSpaceAgnostic;
         nsecs_t desiredPresentTime = -1;
+
+        // Length of the cast shadow. If the radius is > 0, a shadow of length shadowRadius will
+        // be rendered around the layer.
         float shadowRadius;
     };
 
@@ -507,6 +510,9 @@
     void latchCursorCompositionState(compositionengine::LayerFECompositionState&) const override;
     std::optional<renderengine::LayerSettings> prepareClientComposition(
             compositionengine::LayerFE::ClientCompositionTargetSettings&) override;
+    std::optional<renderengine::LayerSettings> prepareShadowClientComposition(
+            const renderengine::LayerSettings& layerSettings, const Rect& displayViewport,
+            ui::Dataspace outputDataspace) override;
     void onLayerDisplayed(const sp<Fence>& releaseFence) override;
     const char* getDebugName() const override;
 
@@ -601,8 +607,6 @@
 
     virtual sp<GraphicBuffer> getBuffer() const { return nullptr; }
 
-    virtual uint64_t getCurrentFrameNumber() const { return mCurrentFrameNumber; }
-
     /*
      * Returns if a frame is ready
      */
@@ -652,6 +656,8 @@
     // ignored.
     RoundedCornerState getRoundedCornerState() const;
 
+    renderengine::ShadowSettings getShadowSettings(const Rect& viewport) const;
+
     void traverseInReverseZOrder(LayerVector::StateSet stateSet,
                                  const LayerVector::Visitor& visitor);
     void traverseInZOrder(LayerVector::StateSet stateSet, const LayerVector::Visitor& visitor);
@@ -664,6 +670,15 @@
                                   const LayerVector::Visitor& visitor);
 
     size_t getChildrenCount() const;
+
+    // ONLY CALL THIS FROM THE LAYER DTOR!
+    // See b/141111965.  We need to add current children to offscreen layers in
+    // the layer dtor so as not to dangle layers.  Since the layer has not
+    // committed its transaction when the layer is destroyed, we must add
+    // current children.  This is safe in the dtor as we will no longer update
+    // the current state, but should not be called anywhere else!
+    LayerVector& getCurrentChildren() { return mCurrentChildren; }
+
     void addChild(const sp<Layer>& layer);
     // Returns index if removed, or negative value otherwise
     // for symmetry with Vector::remove
@@ -701,6 +716,14 @@
 
     Region debugGetVisibleRegionOnDefaultDisplay() const;
 
+    /**
+     * Returns the cropped buffer size or the layer crop if the layer has no buffer. Return
+     * INVALID_RECT if the layer has no buffer and no crop.
+     * A layer with an invalid buffer size and no crop is considered to be boundless. The layer
+     * bounds are constrained by its parent bounds.
+     */
+    Rect getCroppedBufferSize(const Layer::State& s) const;
+
 protected:
     // constant
     sp<SurfaceFlinger> mFlinger;
@@ -909,13 +932,6 @@
                                        const LayerVector::Visitor& visitor);
     LayerVector makeChildrenTraversalList(LayerVector::StateSet stateSet,
                                           const std::vector<Layer*>& layersInTree);
-    /**
-     * Returns the cropped buffer size or the layer crop if the layer has no buffer. Return
-     * INVALID_RECT if the layer has no buffer and no crop.
-     * A layer with an invalid buffer size and no crop is considered to be boundless. The layer
-     * bounds are constrained by its parent bounds.
-     */
-    Rect getCroppedBufferSize(const Layer::State& s) const;
 
     // Cached properties computed from drawing state
     // Effective transform taking into account parent transforms and any parent scaling.
diff --git a/services/surfaceflinger/RefreshRateOverlay.cpp b/services/surfaceflinger/RefreshRateOverlay.cpp
index 976fedb..38a80a7 100644
--- a/services/surfaceflinger/RefreshRateOverlay.cpp
+++ b/services/surfaceflinger/RefreshRateOverlay.cpp
@@ -20,8 +20,6 @@
 
 namespace android {
 
-using RefreshRateType = scheduler::RefreshRateConfigs::RefreshRateType;
-
 RefreshRateOverlay::RefreshRateOverlay(SurfaceFlinger& flinger)
       : mFlinger(flinger), mClient(new Client(&mFlinger)) {
     createLayer();
@@ -51,8 +49,8 @@
     return true;
 }
 
-void RefreshRateOverlay::changeRefreshRate(RefreshRateType type) {
-    const half3& color = (type == RefreshRateType::PERFORMANCE) ? GREEN : RED;
+void RefreshRateOverlay::changeRefreshRate(const RefreshRate& refreshRate) {
+    const half3& color = (refreshRate.fps > 65.0f) ? GREEN : RED;
     mLayer->setColor(color);
     mFlinger.mTransactionFlags.fetch_or(eTransactionMask);
 }
diff --git a/services/surfaceflinger/RefreshRateOverlay.h b/services/surfaceflinger/RefreshRateOverlay.h
index ce29bc3..414bc47 100644
--- a/services/surfaceflinger/RefreshRateOverlay.h
+++ b/services/surfaceflinger/RefreshRateOverlay.h
@@ -19,13 +19,13 @@
 
 namespace android {
 
-using RefreshRateType = scheduler::RefreshRateConfigs::RefreshRateType;
+using RefreshRate = scheduler::RefreshRateConfigs::RefreshRate;
 
 class RefreshRateOverlay {
 public:
     RefreshRateOverlay(SurfaceFlinger& flinger);
 
-    void changeRefreshRate(RefreshRateType type);
+    void changeRefreshRate(const RefreshRate& refreshRate);
 
 private:
     bool createLayer();
diff --git a/services/surfaceflinger/RenderArea.h b/services/surfaceflinger/RenderArea.h
index edc6442..532572f 100644
--- a/services/surfaceflinger/RenderArea.h
+++ b/services/surfaceflinger/RenderArea.h
@@ -22,13 +22,14 @@
     static float getCaptureFillValue(CaptureFill captureFill);
 
     RenderArea(uint32_t reqWidth, uint32_t reqHeight, CaptureFill captureFill,
-               ui::Dataspace reqDataSpace,
+               ui::Dataspace reqDataSpace, const Rect& displayViewport,
                ui::Transform::orientation_flags rotation = ui::Transform::ROT_0)
           : mReqWidth(reqWidth),
             mReqHeight(reqHeight),
             mReqDataSpace(reqDataSpace),
             mCaptureFill(captureFill),
-            mRotationFlags(rotation) {}
+            mRotationFlags(rotation),
+            mDisplayViewport(displayViewport) {}
 
     virtual ~RenderArea() = default;
 
@@ -80,12 +81,16 @@
 
     virtual const sp<const DisplayDevice> getDisplayDevice() const = 0;
 
+    // Returns the source display viewport.
+    const Rect& getDisplayViewport() const { return mDisplayViewport; }
+
 private:
     const uint32_t mReqWidth;
     const uint32_t mReqHeight;
     const ui::Dataspace mReqDataSpace;
     const CaptureFill mCaptureFill;
     const ui::Transform::orientation_flags mRotationFlags;
+    const Rect mDisplayViewport;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/Scheduler/EventThread.cpp b/services/surfaceflinger/Scheduler/EventThread.cpp
index 8d9adc8..ff800c3 100644
--- a/services/surfaceflinger/Scheduler/EventThread.cpp
+++ b/services/surfaceflinger/Scheduler/EventThread.cpp
@@ -36,6 +36,7 @@
 #include <utils/Trace.h>
 
 #include "EventThread.h"
+#include "HwcStrongTypes.h"
 
 using namespace std::chrono_literals;
 
@@ -101,10 +102,11 @@
     return event;
 }
 
-DisplayEventReceiver::Event makeConfigChanged(PhysicalDisplayId displayId, int32_t configId) {
+DisplayEventReceiver::Event makeConfigChanged(PhysicalDisplayId displayId,
+                                              HwcConfigIndexType configId) {
     DisplayEventReceiver::Event event;
     event.header = {DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED, displayId, systemTime()};
-    event.config.configId = configId;
+    event.config.configId = configId.value();
     return event;
 }
 
@@ -290,7 +292,7 @@
     mCondition.notify_all();
 }
 
-void EventThread::onConfigChanged(PhysicalDisplayId displayId, int32_t configId) {
+void EventThread::onConfigChanged(PhysicalDisplayId displayId, HwcConfigIndexType configId) {
     std::lock_guard<std::mutex> lock(mMutex);
 
     mPendingEvents.push_back(makeConfigChanged(displayId, configId));
diff --git a/services/surfaceflinger/Scheduler/EventThread.h b/services/surfaceflinger/Scheduler/EventThread.h
index a029586..a42546c 100644
--- a/services/surfaceflinger/Scheduler/EventThread.h
+++ b/services/surfaceflinger/Scheduler/EventThread.h
@@ -33,6 +33,7 @@
 #include <private/gui/BitTube.h>
 
 #include <utils/Errors.h>
+#include "HwcStrongTypes.h"
 
 // ---------------------------------------------------------------------------
 namespace android {
@@ -109,7 +110,7 @@
     virtual void onHotplugReceived(PhysicalDisplayId displayId, bool connected) = 0;
 
     // called when SF changes the active config and apps needs to be notified about the change
-    virtual void onConfigChanged(PhysicalDisplayId displayId, int32_t configId) = 0;
+    virtual void onConfigChanged(PhysicalDisplayId displayId, HwcConfigIndexType configId) = 0;
 
     virtual void dump(std::string& result) const = 0;
 
@@ -146,7 +147,7 @@
 
     void onHotplugReceived(PhysicalDisplayId displayId, bool connected) override;
 
-    void onConfigChanged(PhysicalDisplayId displayId, int32_t configId) override;
+    void onConfigChanged(PhysicalDisplayId displayId, HwcConfigIndexType configId) override;
 
     void dump(std::string& result) const override;
 
diff --git a/services/surfaceflinger/Scheduler/HwcStrongTypes.h b/services/surfaceflinger/Scheduler/HwcStrongTypes.h
new file mode 100644
index 0000000..cfbbdfe
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/HwcStrongTypes.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "StrongTyping.h"
+
+namespace android {
+
+// Strong types for the different indexes as they are referring to a different base.
+using HwcConfigIndexType = StrongTyping<int, struct HwcConfigIndexTypeTag, Compare, Add, Hash>;
+using HwcConfigGroupType = StrongTyping<int, struct HwcConfigGroupTypeTag, Compare>;
+
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/Scheduler/LayerHistory.cpp b/services/surfaceflinger/Scheduler/LayerHistory.cpp
index 8b71728..146ec1b 100644
--- a/services/surfaceflinger/Scheduler/LayerHistory.cpp
+++ b/services/surfaceflinger/Scheduler/LayerHistory.cpp
@@ -39,7 +39,7 @@
 namespace {
 
 bool isLayerActive(const Layer& layer, const LayerInfo& info, nsecs_t threshold) {
-    return layer.isVisible() && (info.isHDR() || info.getLastUpdatedTime() >= threshold);
+    return layer.isVisible() && info.getLastUpdatedTime() >= threshold;
 }
 
 bool traceEnabled() {
@@ -69,7 +69,7 @@
     mLayerInfos.emplace_back(layer, std::move(info));
 }
 
-void LayerHistory::record(Layer* layer, nsecs_t presentTime, bool isHDR, nsecs_t now) {
+void LayerHistory::record(Layer* layer, nsecs_t presentTime, nsecs_t now) {
     std::lock_guard lock(mLock);
 
     const auto it = std::find_if(mLayerInfos.begin(), mLayerInfos.end(),
@@ -78,7 +78,6 @@
 
     const auto& info = it->second;
     info->setLastPresentTime(presentTime, now);
-    info->setIsHDR(isHDR);
 
     // Activate layer if inactive.
     if (const auto end = activeLayers().end(); it >= end) {
@@ -89,7 +88,6 @@
 
 LayerHistory::Summary LayerHistory::summarize(nsecs_t now) {
     float maxRefreshRate = 0;
-    bool isHDR = false;
 
     std::lock_guard lock(mLock);
 
@@ -108,13 +106,12 @@
                 trace(layer, std::round(refreshRate));
             }
         }
-        isHDR |= info->isHDR();
     }
     if (CC_UNLIKELY(mTraceEnabled)) {
-        ALOGD("%s: maxRefreshRate=%.2f, isHDR=%d", __FUNCTION__, maxRefreshRate, isHDR);
+        ALOGD("%s: maxRefreshRate=%.2f", __FUNCTION__, maxRefreshRate);
     }
 
-    return {maxRefreshRate, isHDR};
+    return {maxRefreshRate};
 }
 
 void LayerHistory::partitionLayers(nsecs_t now) {
diff --git a/services/surfaceflinger/Scheduler/LayerHistory.h b/services/surfaceflinger/Scheduler/LayerHistory.h
index bd9aca1..745c4c1 100644
--- a/services/surfaceflinger/Scheduler/LayerHistory.h
+++ b/services/surfaceflinger/Scheduler/LayerHistory.h
@@ -46,11 +46,10 @@
     void registerLayer(Layer*, float lowRefreshRate, float highRefreshRate);
 
     // Marks the layer as active, and records the given state to its history.
-    void record(Layer*, nsecs_t presentTime, bool isHDR, nsecs_t now);
+    void record(Layer*, nsecs_t presentTime, nsecs_t now);
 
     struct Summary {
         float maxRefreshRate; // Maximum refresh rate among recently active layers.
-        bool isHDR;           // True if any recently active layer has HDR content.
     };
 
     // Rebuilds sets of active/inactive layers, and accumulates stats for active layers.
diff --git a/services/surfaceflinger/Scheduler/LayerInfo.h b/services/surfaceflinger/Scheduler/LayerInfo.h
index b86709f..cb81ca2 100644
--- a/services/surfaceflinger/Scheduler/LayerInfo.h
+++ b/services/surfaceflinger/Scheduler/LayerInfo.h
@@ -140,9 +140,6 @@
     // updated time, the updated time is the present time.
     void setLastPresentTime(nsecs_t lastPresentTime, nsecs_t now);
 
-    bool isHDR() const { return mIsHDR; }
-    void setIsHDR(bool isHDR) { mIsHDR = isHDR; }
-
     bool isRecentlyActive(nsecs_t now) const { return mPresentTimeHistory.isRecentlyActive(now); }
     bool isFrequent(nsecs_t now) const { return mPresentTimeHistory.isFrequent(now); }
 
@@ -167,7 +164,6 @@
     nsecs_t mLastPresentTime = 0;
     RefreshRateHistory mRefreshRateHistory{mHighRefreshRate};
     PresentTimeHistory mPresentTimeHistory;
-    bool mIsHDR = false;
 };
 
 } // namespace scheduler
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
index 6be88f8..12832a6 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
+++ b/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
@@ -48,16 +48,18 @@
             getProperty("debug.sf.phase_offset_threshold_for_next_vsync_ns")
                     .value_or(std::numeric_limits<nsecs_t>::max());
 
-    const Offsets defaultOffsets = getDefaultOffsets(thresholdForNextVsync);
-    const Offsets highFpsOffsets = getHighFpsOffsets(thresholdForNextVsync);
-
-    mOffsets.insert({RefreshRateType::DEFAULT, defaultOffsets});
-    mOffsets.insert({RefreshRateType::PERFORMANCE, highFpsOffsets});
+    mDefaultOffsets = getDefaultOffsets(thresholdForNextVsync);
+    mHighFpsOffsets = getHighFpsOffsets(thresholdForNextVsync);
 }
 
-PhaseOffsets::Offsets PhaseOffsets::getOffsetsForRefreshRate(
-        RefreshRateType refreshRateType) const {
-    return mOffsets.at(refreshRateType);
+PhaseOffsets::Offsets PhaseOffsets::getOffsetsForRefreshRate(float fps) const {
+    // TODO(145561086): Once offsets are common for all refresh rates we can remove the magic
+    // number for refresh rate
+    if (fps > 65.0f) {
+        return mHighFpsOffsets;
+    } else {
+        return mDefaultOffsets;
+    }
 }
 
 void PhaseOffsets::dump(std::string& result) const {
@@ -80,13 +82,13 @@
     const auto earlyAppOffsetNs = getProperty("debug.sf.early_app_phase_offset_ns");
     const auto earlyGlAppOffsetNs = getProperty("debug.sf.early_gl_app_phase_offset_ns");
 
-    return {{RefreshRateType::DEFAULT, earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs),
+    return {{earlySfOffsetNs.value_or(sfVsyncPhaseOffsetNs),
              earlyAppOffsetNs.value_or(vsyncPhaseOffsetNs)},
 
-            {RefreshRateType::DEFAULT, earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs),
+            {earlyGlSfOffsetNs.value_or(sfVsyncPhaseOffsetNs),
              earlyGlAppOffsetNs.value_or(vsyncPhaseOffsetNs)},
 
-            {RefreshRateType::DEFAULT, sfVsyncPhaseOffsetNs, vsyncPhaseOffsetNs},
+            {sfVsyncPhaseOffsetNs, vsyncPhaseOffsetNs},
 
             thresholdForNextVsync};
 }
@@ -104,13 +106,13 @@
     const auto highFpsEarlyGlAppOffsetNs =
             getProperty("debug.sf.high_fps_early_gl_app_phase_offset_ns");
 
-    return {{RefreshRateType::PERFORMANCE, highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs),
+    return {{highFpsEarlySfOffsetNs.value_or(highFpsLateSfOffsetNs),
              highFpsEarlyAppOffsetNs.value_or(highFpsLateAppOffsetNs)},
 
-            {RefreshRateType::PERFORMANCE, highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs),
+            {highFpsEarlyGlSfOffsetNs.value_or(highFpsLateSfOffsetNs),
              highFpsEarlyGlAppOffsetNs.value_or(highFpsLateAppOffsetNs)},
 
-            {RefreshRateType::PERFORMANCE, highFpsLateSfOffsetNs, highFpsLateAppOffsetNs},
+            {highFpsLateSfOffsetNs, highFpsLateAppOffsetNs},
 
             thresholdForNextVsync};
 }
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.h b/services/surfaceflinger/Scheduler/PhaseOffsets.h
index 2c52432..7747f0c 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.h
+++ b/services/surfaceflinger/Scheduler/PhaseOffsets.h
@@ -32,7 +32,6 @@
 class PhaseOffsets {
 public:
     using Offsets = VSyncModulator::OffsetsConfig;
-    using RefreshRateType = RefreshRateConfigs::RefreshRateType;
 
     virtual ~PhaseOffsets();
 
@@ -43,9 +42,9 @@
     }
 
     virtual Offsets getCurrentOffsets() const = 0;
-    virtual Offsets getOffsetsForRefreshRate(RefreshRateType) const = 0;
+    virtual Offsets getOffsetsForRefreshRate(float fps) const = 0;
 
-    virtual void setRefreshRateType(RefreshRateType) = 0;
+    virtual void setRefreshRateFps(float fps) = 0;
 
     virtual void dump(std::string& result) const = 0;
 };
@@ -57,18 +56,14 @@
     PhaseOffsets();
 
     // Returns early, early GL, and late offsets for Apps and SF for a given refresh rate.
-    Offsets getOffsetsForRefreshRate(RefreshRateType) const override;
+    Offsets getOffsetsForRefreshRate(float fps) const override;
 
     // Returns early, early GL, and late offsets for Apps and SF.
-    Offsets getCurrentOffsets() const override {
-        return getOffsetsForRefreshRate(mRefreshRateType);
-    }
+    Offsets getCurrentOffsets() const override { return getOffsetsForRefreshRate(mRefreshRateFps); }
 
     // This function should be called when the device is switching between different
     // refresh rates, to properly update the offsets.
-    void setRefreshRateType(RefreshRateType refreshRateType) override {
-        mRefreshRateType = refreshRateType;
-    }
+    void setRefreshRateFps(float fps) override { mRefreshRateFps = fps; }
 
     // Returns current offsets in human friendly format.
     void dump(std::string& result) const override;
@@ -77,9 +72,10 @@
     static Offsets getDefaultOffsets(nsecs_t thresholdForNextVsync);
     static Offsets getHighFpsOffsets(nsecs_t thresholdForNextVsync);
 
-    std::atomic<RefreshRateType> mRefreshRateType = RefreshRateType::DEFAULT;
+    std::atomic<float> mRefreshRateFps = 0;
 
-    std::unordered_map<RefreshRateType, Offsets> mOffsets;
+    Offsets mDefaultOffsets;
+    Offsets mHighFpsOffsets;
 };
 
 } // namespace impl
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
new file mode 100644
index 0000000..23fb96a
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// #define LOG_NDEBUG 0
+#include "RefreshRateConfigs.h"
+
+namespace android::scheduler {
+
+using AllRefreshRatesMapType = RefreshRateConfigs::AllRefreshRatesMapType;
+using RefreshRate = RefreshRateConfigs::RefreshRate;
+
+// Returns the refresh rate map. This map won't be modified at runtime, so it's safe to access
+// from multiple threads. This can only be called if refreshRateSwitching() returns true.
+// TODO(b/122916473): Get this information from configs prepared by vendors, instead of
+// baking them in.
+const RefreshRate& RefreshRateConfigs::getRefreshRateForContent(float contentFramerate) const {
+    std::lock_guard lock(mLock);
+    // Find the appropriate refresh rate with minimal error
+    auto iter = min_element(mAvailableRefreshRates.cbegin(), mAvailableRefreshRates.cend(),
+                            [contentFramerate](const auto& lhs, const auto& rhs) -> bool {
+                                return std::abs(lhs->fps - contentFramerate) <
+                                        std::abs(rhs->fps - contentFramerate);
+                            });
+
+    // Some content aligns better on higher refresh rate. For example for 45fps we should choose
+    // 90Hz config. However we should still prefer a lower refresh rate if the content doesn't
+    // align well with both
+    const RefreshRate* bestSoFar = *iter;
+    constexpr float MARGIN = 0.05f;
+    float ratio = (*iter)->fps / contentFramerate;
+    if (std::abs(std::round(ratio) - ratio) > MARGIN) {
+        while (iter != mAvailableRefreshRates.cend()) {
+            ratio = (*iter)->fps / contentFramerate;
+
+            if (std::abs(std::round(ratio) - ratio) <= MARGIN) {
+                bestSoFar = *iter;
+                break;
+            }
+            ++iter;
+        }
+    }
+
+    return *bestSoFar;
+}
+
+const AllRefreshRatesMapType& RefreshRateConfigs::getAllRefreshRates() const {
+    return mRefreshRates;
+}
+
+const RefreshRate& RefreshRateConfigs::getMinRefreshRateByPolicy() const {
+    std::lock_guard lock(mLock);
+    if (!mRefreshRateSwitching) {
+        return *mCurrentRefreshRate;
+    } else {
+        return *mAvailableRefreshRates.front();
+    }
+}
+
+const RefreshRate& RefreshRateConfigs::getMaxRefreshRateByPolicy() const {
+    std::lock_guard lock(mLock);
+    if (!mRefreshRateSwitching) {
+        return *mCurrentRefreshRate;
+    } else {
+        return *mAvailableRefreshRates.back();
+    }
+}
+
+const RefreshRate& RefreshRateConfigs::getCurrentRefreshRate() const {
+    std::lock_guard lock(mLock);
+    return *mCurrentRefreshRate;
+}
+
+void RefreshRateConfigs::setCurrentConfigId(HwcConfigIndexType configId) {
+    std::lock_guard lock(mLock);
+    mCurrentRefreshRate = &mRefreshRates.at(configId);
+}
+
+RefreshRateConfigs::RefreshRateConfigs(bool refreshRateSwitching,
+                                       const std::vector<InputConfig>& configs,
+                                       HwcConfigIndexType currentHwcConfig)
+      : mRefreshRateSwitching(refreshRateSwitching) {
+    init(configs, currentHwcConfig);
+}
+
+RefreshRateConfigs::RefreshRateConfigs(
+        bool refreshRateSwitching,
+        const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs,
+        HwcConfigIndexType currentConfigId)
+      : mRefreshRateSwitching(refreshRateSwitching) {
+    std::vector<InputConfig> inputConfigs;
+    for (auto configId = HwcConfigIndexType(0); configId < HwcConfigIndexType(configs.size());
+         ++configId) {
+        auto configGroup = HwcConfigGroupType(configs[configId.value()]->getConfigGroup());
+        inputConfigs.push_back(
+                {configId, configGroup, configs[configId.value()]->getVsyncPeriod()});
+    }
+    init(inputConfigs, currentConfigId);
+}
+
+void RefreshRateConfigs::setPolicy(HwcConfigIndexType defaultConfigId, float minRefreshRate,
+                                   float maxRefreshRate) {
+    std::lock_guard lock(mLock);
+    mCurrentGroupId = mRefreshRates.at(defaultConfigId).configGroup;
+    mMinRefreshRateFps = minRefreshRate;
+    mMaxRefreshRateFps = maxRefreshRate;
+    constructAvailableRefreshRates();
+}
+
+void RefreshRateConfigs::getSortedRefreshRateList(
+        const std::function<bool(const RefreshRate&)>& shouldAddRefreshRate,
+        std::vector<const RefreshRate*>* outRefreshRates) {
+    outRefreshRates->clear();
+    outRefreshRates->reserve(mRefreshRates.size());
+    for (const auto& [type, refreshRate] : mRefreshRates) {
+        if (shouldAddRefreshRate(refreshRate)) {
+            ALOGV("getSortedRefreshRateList: config %d added to list policy",
+                  refreshRate.configId.value());
+            outRefreshRates->push_back(&refreshRate);
+        }
+    }
+
+    std::sort(outRefreshRates->begin(), outRefreshRates->end(),
+              [](const auto refreshRate1, const auto refreshRate2) {
+                  return refreshRate1->vsyncPeriod > refreshRate2->vsyncPeriod;
+              });
+}
+
+void RefreshRateConfigs::constructAvailableRefreshRates() {
+    // Filter configs based on current policy and sort based on vsync period
+    ALOGV("constructRefreshRateMap: group %d min %.2f max %.2f", mCurrentGroupId.value(),
+          mMinRefreshRateFps, mMaxRefreshRateFps);
+    getSortedRefreshRateList(
+            [this](const RefreshRate& refreshRate) REQUIRES(mLock) {
+                return refreshRate.configGroup == mCurrentGroupId &&
+                        refreshRate.fps >= mMinRefreshRateFps &&
+                        refreshRate.fps <= mMaxRefreshRateFps;
+            },
+            &mAvailableRefreshRates);
+}
+
+// NO_THREAD_SAFETY_ANALYSIS since this is called from the constructor
+void RefreshRateConfigs::init(const std::vector<InputConfig>& configs,
+                              HwcConfigIndexType currentHwcConfig) NO_THREAD_SAFETY_ANALYSIS {
+    LOG_ALWAYS_FATAL_IF(configs.empty());
+    LOG_ALWAYS_FATAL_IF(currentHwcConfig.value() >= configs.size());
+
+    auto buildRefreshRate = [&](InputConfig config) -> RefreshRate {
+        const float fps = 1e9f / config.vsyncPeriod;
+        return RefreshRate(config.configId, config.vsyncPeriod, config.configGroup,
+                           base::StringPrintf("%2.ffps", fps), fps);
+    };
+
+    for (const auto& config : configs) {
+        mRefreshRates.emplace(config.configId, buildRefreshRate(config));
+        if (config.configId == currentHwcConfig) {
+            mCurrentRefreshRate = &mRefreshRates.at(config.configId);
+            mCurrentGroupId = config.configGroup;
+        }
+    }
+
+    std::vector<const RefreshRate*> sortedConfigs;
+    getSortedRefreshRateList([](const RefreshRate&) { return true; }, &sortedConfigs);
+    mMinSupportedRefreshRate = sortedConfigs.front();
+    mMaxSupportedRefreshRate = sortedConfigs.back();
+    constructAvailableRefreshRates();
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
index 2fd100f..fb14dc7 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
@@ -23,7 +23,9 @@
 #include <type_traits>
 
 #include "DisplayHardware/HWComposer.h"
+#include "HwcStrongTypes.h"
 #include "Scheduler/SchedulerUtils.h"
+#include "Scheduler/StrongTyping.h"
 
 namespace android::scheduler {
 
@@ -41,172 +43,123 @@
  */
 class RefreshRateConfigs {
 public:
-    // Enum to indicate which vsync rate to run at. Default is the old 60Hz, and performance
-    // is the new 90Hz. Eventually we want to have a way for vendors to map these in the configs.
-    enum class RefreshRateType { DEFAULT, PERFORMANCE };
-
     struct RefreshRate {
+        RefreshRate(HwcConfigIndexType configId, nsecs_t vsyncPeriod,
+                    HwcConfigGroupType configGroup, std::string name, float fps)
+              : configId(configId),
+                vsyncPeriod(vsyncPeriod),
+                configGroup(configGroup),
+                name(std::move(name)),
+                fps(fps) {}
         // This config ID corresponds to the position of the config in the vector that is stored
         // on the device.
-        int configId;
-        // Human readable name of the refresh rate.
-        std::string name;
-        // Refresh rate in frames per second, rounded to the nearest integer.
-        uint32_t fps = 0;
+        const HwcConfigIndexType configId;
         // Vsync period in nanoseconds.
-        nsecs_t vsyncPeriod;
-        // Hwc config Id (returned from HWC2::Display::Config::getId())
-        hwc2_config_t hwcId;
+        const nsecs_t vsyncPeriod;
+        // This configGroup for the config.
+        const HwcConfigGroupType configGroup;
+        // Human readable name of the refresh rate.
+        const std::string name;
+        // Refresh rate in frames per second
+        const float fps = 0;
+
+        bool operator!=(const RefreshRate& other) const {
+            return configId != other.configId || vsyncPeriod != other.vsyncPeriod ||
+                    configGroup != other.configGroup;
+        }
+
+        bool operator==(const RefreshRate& other) const { return !(*this != other); }
     };
 
+    using AllRefreshRatesMapType = std::unordered_map<HwcConfigIndexType, const RefreshRate>;
+
+    // Sets the current policy to choose refresh rates.
+    void setPolicy(HwcConfigIndexType defaultConfigId, float minRefreshRate, float maxRefreshRate)
+            EXCLUDES(mLock);
+
     // Returns true if this device is doing refresh rate switching. This won't change at runtime.
-    bool refreshRateSwitchingSupported() const { return mRefreshRateSwitchingSupported; }
+    bool refreshRateSwitchingSupported() const { return mRefreshRateSwitching; }
 
-    // Returns the refresh rate map. This map won't be modified at runtime, so it's safe to access
-    // from multiple threads. This can only be called if refreshRateSwitching() returns true.
-    // TODO(b/122916473): Get this information from configs prepared by vendors, instead of
-    // baking them in.
-    const std::map<RefreshRateType, RefreshRate>& getRefreshRateMap() const {
-        LOG_ALWAYS_FATAL_IF(!mRefreshRateSwitchingSupported);
-        return mRefreshRateMap;
-    }
+    // Returns all available refresh rates according to the current policy.
+    const RefreshRate& getRefreshRateForContent(float contentFramerate) const EXCLUDES(mLock);
 
-    const RefreshRate& getRefreshRateFromType(RefreshRateType type) const {
-        if (!mRefreshRateSwitchingSupported) {
-            return getCurrentRefreshRate().second;
-        } else {
-            auto refreshRate = mRefreshRateMap.find(type);
-            LOG_ALWAYS_FATAL_IF(refreshRate == mRefreshRateMap.end());
-            return refreshRate->second;
-        }
-    }
+    // Returns all the refresh rates supported by the device. This won't change at runtime.
+    const AllRefreshRatesMapType& getAllRefreshRates() const EXCLUDES(mLock);
 
-    std::pair<RefreshRateType, const RefreshRate&> getCurrentRefreshRate() const {
-        int currentConfig = mCurrentConfig;
-        if (mRefreshRateSwitchingSupported) {
-            for (const auto& [type, refresh] : mRefreshRateMap) {
-                if (refresh.configId == currentConfig) {
-                    return {type, refresh};
-                }
-            }
-            LOG_ALWAYS_FATAL();
-        }
-        return {RefreshRateType::DEFAULT, mRefreshRates[currentConfig]};
-    }
+    // Returns the lowest refresh rate supported by the device. This won't change at runtime.
+    const RefreshRate& getMinRefreshRate() const { return *mMinSupportedRefreshRate; }
 
-    const RefreshRate& getRefreshRateFromConfigId(int configId) const {
-        LOG_ALWAYS_FATAL_IF(configId >= mRefreshRates.size());
-        return mRefreshRates[configId];
-    }
+    // Returns the lowest refresh rate according to the current policy. May change in runtime.
+    const RefreshRate& getMinRefreshRateByPolicy() const EXCLUDES(mLock);
 
-    RefreshRateType getRefreshRateTypeFromHwcConfigId(hwc2_config_t hwcId) const {
-        if (!mRefreshRateSwitchingSupported) return RefreshRateType::DEFAULT;
+    // Returns the highest refresh rate supported by the device. This won't change at runtime.
+    const RefreshRate& getMaxRefreshRate() const { return *mMaxSupportedRefreshRate; }
 
-        for (const auto& [type, refreshRate] : mRefreshRateMap) {
-            if (refreshRate.hwcId == hwcId) {
-                return type;
-            }
-        }
+    // Returns the highest refresh rate according to the current policy. May change in runtime.
+    const RefreshRate& getMaxRefreshRateByPolicy() const EXCLUDES(mLock);
 
-        return RefreshRateType::DEFAULT;
-    }
+    // Returns the current refresh rate
+    const RefreshRate& getCurrentRefreshRate() const EXCLUDES(mLock);
 
-    void setCurrentConfig(int config) {
-        LOG_ALWAYS_FATAL_IF(config >= mRefreshRates.size());
-        mCurrentConfig = config;
-    }
+    // Returns the refresh rate that corresponds to a HwcConfigIndexType. This won't change at
+    // runtime.
+    const RefreshRate& getRefreshRateFromConfigId(HwcConfigIndexType configId) const {
+        return mRefreshRates.at(configId);
+    };
+
+    // Stores the current configId the device operates at
+    void setCurrentConfigId(HwcConfigIndexType configId) EXCLUDES(mLock);
 
     struct InputConfig {
-        hwc2_config_t hwcId = 0;
+        HwcConfigIndexType configId = HwcConfigIndexType(0);
+        HwcConfigGroupType configGroup = HwcConfigGroupType(0);
         nsecs_t vsyncPeriod = 0;
     };
 
     RefreshRateConfigs(bool refreshRateSwitching, const std::vector<InputConfig>& configs,
-                       int currentConfig) {
-        init(refreshRateSwitching, configs, currentConfig);
-    }
-
+                       HwcConfigIndexType currentHwcConfig);
     RefreshRateConfigs(bool refreshRateSwitching,
                        const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs,
-                       int currentConfig) {
-        std::vector<InputConfig> inputConfigs;
-        for (const auto& config : configs) {
-            inputConfigs.push_back({config->getId(), config->getVsyncPeriod()});
-        }
-        init(refreshRateSwitching, inputConfigs, currentConfig);
-    }
+                       HwcConfigIndexType currentConfigId);
 
 private:
-    void init(bool refreshRateSwitching, const std::vector<InputConfig>& configs,
-              int currentConfig) {
-        mRefreshRateSwitchingSupported = refreshRateSwitching;
-        LOG_ALWAYS_FATAL_IF(configs.empty());
-        LOG_ALWAYS_FATAL_IF(currentConfig >= configs.size());
-        mCurrentConfig = currentConfig;
+    void init(const std::vector<InputConfig>& configs, HwcConfigIndexType currentHwcConfig);
 
-        auto buildRefreshRate = [&](int configId) -> RefreshRate {
-            const nsecs_t vsyncPeriod = configs[configId].vsyncPeriod;
-            const float fps = 1e9 / vsyncPeriod;
-            return {configId, base::StringPrintf("%2.ffps", fps), static_cast<uint32_t>(fps),
-                    vsyncPeriod, configs[configId].hwcId};
-        };
+    void constructAvailableRefreshRates() REQUIRES(mLock);
 
-        for (int i = 0; i < configs.size(); ++i) {
-            mRefreshRates.push_back(buildRefreshRate(i));
-        }
+    void getSortedRefreshRateList(
+            const std::function<bool(const RefreshRate&)>& shouldAddRefreshRate,
+            std::vector<const RefreshRate*>* outRefreshRates);
 
-        if (!mRefreshRateSwitchingSupported) return;
-
-        auto findDefaultAndPerfConfigs = [&]() -> std::optional<std::pair<int, int>> {
-            if (configs.size() < 2) {
-                return {};
-            }
-
-            std::vector<const RefreshRate*> sortedRefreshRates;
-            for (const auto& refreshRate : mRefreshRates) {
-                sortedRefreshRates.push_back(&refreshRate);
-            }
-            std::sort(sortedRefreshRates.begin(), sortedRefreshRates.end(),
-                      [](const RefreshRate* refreshRate1, const RefreshRate* refreshRate2) {
-                          return refreshRate1->vsyncPeriod > refreshRate2->vsyncPeriod;
-                      });
-
-            // When the configs are ordered by the resync rate, we assume that
-            // the first one is DEFAULT and the second one is PERFORMANCE,
-            // i.e. the higher rate.
-            if (sortedRefreshRates[0]->vsyncPeriod == 0 ||
-                sortedRefreshRates[1]->vsyncPeriod == 0) {
-                return {};
-            }
-
-            return std::pair<int, int>(sortedRefreshRates[0]->configId,
-                                       sortedRefreshRates[1]->configId);
-        };
-
-        auto defaultAndPerfConfigs = findDefaultAndPerfConfigs();
-        if (!defaultAndPerfConfigs) {
-            mRefreshRateSwitchingSupported = false;
-            return;
-        }
-
-        mRefreshRateMap[RefreshRateType::DEFAULT] = mRefreshRates[defaultAndPerfConfigs->first];
-        mRefreshRateMap[RefreshRateType::PERFORMANCE] =
-                mRefreshRates[defaultAndPerfConfigs->second];
-    }
-
-    // Whether this device is doing refresh rate switching or not. This must not change after this
-    // object is initialized.
-    bool mRefreshRateSwitchingSupported;
     // The list of refresh rates, indexed by display config ID. This must not change after this
     // object is initialized.
-    std::vector<RefreshRate> mRefreshRates;
-    // The mapping of refresh rate type to RefreshRate. This must not change after this object is
-    // initialized.
-    std::map<RefreshRateType, RefreshRate> mRefreshRateMap;
-    // The ID of the current config. This will change at runtime. This is set by SurfaceFlinger on
-    // the main thread, and read by the Scheduler (and other objects) on other threads, so it's
-    // atomic.
-    std::atomic<int> mCurrentConfig;
+    AllRefreshRatesMapType mRefreshRates;
+
+    // The list of refresh rates which are available in the current policy, ordered by vsyncPeriod
+    // (the first element is the lowest refresh rate)
+    std::vector<const RefreshRate*> mAvailableRefreshRates GUARDED_BY(mLock);
+
+    // The current config. This will change at runtime. This is set by SurfaceFlinger on
+    // the main thread, and read by the Scheduler (and other objects) on other threads.
+    const RefreshRate* mCurrentRefreshRate GUARDED_BY(mLock);
+
+    // The current config group. This will change at runtime. This is set by SurfaceFlinger on
+    // the main thread, and read by the Scheduler (and other objects) on other threads.
+    HwcConfigGroupType mCurrentGroupId GUARDED_BY(mLock);
+
+    // The min and max FPS allowed by the policy. This will change at runtime and set by
+    // SurfaceFlinger on the main thread.
+    float mMinRefreshRateFps GUARDED_BY(mLock) = 0;
+    float mMaxRefreshRateFps GUARDED_BY(mLock) = std::numeric_limits<float>::max();
+
+    // The min and max refresh rates supported by the device.
+    // This will not change at runtime.
+    const RefreshRate* mMinSupportedRefreshRate;
+    const RefreshRate* mMaxSupportedRefreshRate;
+
+    const bool mRefreshRateSwitching;
+
+    mutable std::mutex mLock;
 };
 
 } // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/RefreshRateStats.h b/services/surfaceflinger/Scheduler/RefreshRateStats.h
index 8afc93e..a384dbe 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateStats.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateStats.h
@@ -25,8 +25,7 @@
 #include "android-base/stringprintf.h"
 #include "utils/Timers.h"
 
-namespace android {
-namespace scheduler {
+namespace android::scheduler {
 
 /**
  * Class to encapsulate statistics about refresh rates that the display is using. When the power
@@ -42,10 +41,10 @@
 
 public:
     RefreshRateStats(const RefreshRateConfigs& refreshRateConfigs, TimeStats& timeStats,
-                     int currentConfigMode, int currentPowerMode)
+                     HwcConfigIndexType currentConfigId, int currentPowerMode)
           : mRefreshRateConfigs(refreshRateConfigs),
             mTimeStats(timeStats),
-            mCurrentConfigMode(currentConfigMode),
+            mCurrentConfigMode(currentConfigId),
             mCurrentPowerMode(currentPowerMode) {}
 
     // Sets power mode.
@@ -59,12 +58,12 @@
 
     // Sets config mode. If the mode has changed, it records how much time was spent in the previous
     // mode.
-    void setConfigMode(int mode) {
-        if (mCurrentConfigMode == mode) {
+    void setConfigMode(HwcConfigIndexType configId) {
+        if (mCurrentConfigMode == configId) {
             return;
         }
         flushTime();
-        mCurrentConfigMode = mode;
+        mCurrentConfigMode = configId;
     }
 
     // Returns a map between human readable refresh rate and number of seconds the device spent in
@@ -78,11 +77,11 @@
         std::unordered_map<std::string, int64_t> totalTime;
         // Multiple configs may map to the same name, e.g. "60fps". Add the
         // times for such configs together.
-        for (const auto& [config, time] : mConfigModesTotalTime) {
-            totalTime[mRefreshRateConfigs.getRefreshRateFromConfigId(config).name] = 0;
+        for (const auto& [configId, time] : mConfigModesTotalTime) {
+            totalTime[mRefreshRateConfigs.getRefreshRateFromConfigId(configId).name] = 0;
         }
-        for (const auto& [config, time] : mConfigModesTotalTime) {
-            totalTime[mRefreshRateConfigs.getRefreshRateFromConfigId(config).name] += time;
+        for (const auto& [configId, time] : mConfigModesTotalTime) {
+            totalTime[mRefreshRateConfigs.getRefreshRateFromConfigId(configId).name] += time;
         }
         totalTime["ScreenOff"] = mScreenOffTime;
         return totalTime;
@@ -139,14 +138,14 @@
     // Aggregate refresh rate statistics for telemetry.
     TimeStats& mTimeStats;
 
-    int mCurrentConfigMode;
+    HwcConfigIndexType mCurrentConfigMode;
     int32_t mCurrentPowerMode;
 
-    std::unordered_map<int /* config */, int64_t /* duration in ms */> mConfigModesTotalTime;
+    std::unordered_map<HwcConfigIndexType /* configId */, int64_t /* duration in ms */>
+            mConfigModesTotalTime;
     int64_t mScreenOffTime = 0;
 
     nsecs_t mPreviousRecordedTime = systemTime();
 };
 
-} // namespace scheduler
-} // namespace android
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 55fd603..1d50fe1 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -182,7 +182,7 @@
 }
 
 void Scheduler::onConfigChanged(ConnectionHandle handle, PhysicalDisplayId displayId,
-                                int32_t configId) {
+                                HwcConfigIndexType configId) {
     RETURN_IF_INVALID_HANDLE(handle);
     mConnections[handle].thread->onConfigChanged(displayId, configId);
 }
@@ -280,8 +280,7 @@
     const nsecs_t last = mLastResyncTime.exchange(now);
 
     if (now - last > kIgnoreDelay) {
-        resyncToHardwareVsync(false,
-                              mRefreshRateConfigs.getCurrentRefreshRate().second.vsyncPeriod);
+        resyncToHardwareVsync(false, mRefreshRateConfigs.getCurrentRefreshRate().vsyncPeriod);
     }
 }
 
@@ -332,53 +331,49 @@
 void Scheduler::registerLayer(Layer* layer) {
     if (!mLayerHistory) return;
 
-    const auto type = layer->getWindowType() == InputWindowInfo::TYPE_WALLPAPER
-            ? RefreshRateType::DEFAULT
-            : RefreshRateType::PERFORMANCE;
-
-    const auto lowFps = mRefreshRateConfigs.getRefreshRateFromType(RefreshRateType::DEFAULT).fps;
-    const auto highFps = mRefreshRateConfigs.getRefreshRateFromType(type).fps;
+    const auto lowFps = mRefreshRateConfigs.getMinRefreshRate().fps;
+    const auto highFps = layer->getWindowType() == InputWindowInfo::TYPE_WALLPAPER
+            ? lowFps
+            : mRefreshRateConfigs.getMaxRefreshRate().fps;
 
     mLayerHistory->registerLayer(layer, lowFps, highFps);
 }
 
-void Scheduler::recordLayerHistory(Layer* layer, nsecs_t presentTime, bool isHDR) {
+void Scheduler::recordLayerHistory(Layer* layer, nsecs_t presentTime) {
     if (mLayerHistory) {
-        mLayerHistory->record(layer, presentTime, isHDR, systemTime());
+        mLayerHistory->record(layer, presentTime, systemTime());
     }
 }
 
 void Scheduler::chooseRefreshRateForContent() {
     if (!mLayerHistory) return;
 
-    auto [refreshRate, isHDR] = mLayerHistory->summarize(systemTime());
+    auto [refreshRate] = mLayerHistory->summarize(systemTime());
     const uint32_t refreshRateRound = std::round(refreshRate);
-    RefreshRateType newRefreshRateType;
+    HwcConfigIndexType newConfigId;
     {
         std::lock_guard<std::mutex> lock(mFeatureStateLock);
-        if (mFeatures.contentRefreshRate == refreshRateRound && mFeatures.isHDRContent == isHDR) {
+        if (mFeatures.contentRefreshRate == refreshRateRound) {
             return;
         }
         mFeatures.contentRefreshRate = refreshRateRound;
         ATRACE_INT("ContentFPS", refreshRateRound);
 
-        mFeatures.isHDRContent = isHDR;
-        ATRACE_INT("ContentHDR", isHDR);
-
         mFeatures.contentDetection =
                 refreshRateRound > 0 ? ContentDetectionState::On : ContentDetectionState::Off;
-        newRefreshRateType = calculateRefreshRateType();
-        if (mFeatures.refreshRateType == newRefreshRateType) {
+        newConfigId = calculateRefreshRateType();
+        if (mFeatures.configId == newConfigId) {
             return;
         }
-        mFeatures.refreshRateType = newRefreshRateType;
-    }
-    changeRefreshRate(newRefreshRateType, ConfigEvent::Changed);
+        mFeatures.configId = newConfigId;
+    };
+    auto newRefreshRate = mRefreshRateConfigs.getRefreshRateFromConfigId(newConfigId);
+    changeRefreshRate(newRefreshRate, ConfigEvent::Changed);
 }
 
-void Scheduler::setChangeRefreshRateCallback(ChangeRefreshRateCallback&& callback) {
+void Scheduler::setSchedulerCallback(android::Scheduler::ISchedulerCallback* callback) {
     std::lock_guard<std::mutex> lock(mCallbackLock);
-    mChangeRefreshRateCallback = std::move(callback);
+    mSchedulerCallback = callback;
 }
 
 void Scheduler::resetIdleTimer() {
@@ -423,13 +418,16 @@
 void Scheduler::kernelIdleTimerCallback(TimerState state) {
     ATRACE_INT("ExpiredKernelIdleTimer", static_cast<int>(state));
 
+    // TODO(145561154): cleanup the kernel idle timer implementation and the refresh rate
+    // magic number
     const auto refreshRate = mRefreshRateConfigs.getCurrentRefreshRate();
-    if (state == TimerState::Reset && refreshRate.first == RefreshRateType::PERFORMANCE) {
+    constexpr float FPS_THRESHOLD_FOR_KERNEL_TIMER = 65.0f;
+    if (state == TimerState::Reset && refreshRate.fps > FPS_THRESHOLD_FOR_KERNEL_TIMER) {
         // If we're not in performance mode then the kernel timer shouldn't do
         // anything, as the refresh rate during DPU power collapse will be the
         // same.
-        resyncToHardwareVsync(true /* makeAvailable */, refreshRate.second.vsyncPeriod);
-    } else if (state == TimerState::Expired && refreshRate.first != RefreshRateType::PERFORMANCE) {
+        resyncToHardwareVsync(true /* makeAvailable */, refreshRate.vsyncPeriod);
+    } else if (state == TimerState::Expired && refreshRate.fps <= FPS_THRESHOLD_FOR_KERNEL_TIMER) {
         // Disable HW VSYNC if the timer expired, as we don't need it enabled if
         // we're not pushing frames, and if we're in PERFORMANCE mode then we'll
         // need to update the DispSync model anyway.
@@ -471,96 +469,67 @@
 template <class T>
 void Scheduler::handleTimerStateChanged(T* currentState, T newState, bool eventOnContentDetection) {
     ConfigEvent event = ConfigEvent::None;
-    RefreshRateType newRefreshRateType;
+    HwcConfigIndexType newConfigId;
     {
         std::lock_guard<std::mutex> lock(mFeatureStateLock);
         if (*currentState == newState) {
             return;
         }
         *currentState = newState;
-        newRefreshRateType = calculateRefreshRateType();
-        if (mFeatures.refreshRateType == newRefreshRateType) {
+        newConfigId = calculateRefreshRateType();
+        if (mFeatures.configId == newConfigId) {
             return;
         }
-        mFeatures.refreshRateType = newRefreshRateType;
+        mFeatures.configId = newConfigId;
         if (eventOnContentDetection && mFeatures.contentDetection == ContentDetectionState::On) {
             event = ConfigEvent::Changed;
         }
     }
-    changeRefreshRate(newRefreshRateType, event);
+    const RefreshRate& newRefreshRate = mRefreshRateConfigs.getRefreshRateFromConfigId(newConfigId);
+    changeRefreshRate(newRefreshRate, event);
 }
 
-Scheduler::RefreshRateType Scheduler::calculateRefreshRateType() {
+HwcConfigIndexType Scheduler::calculateRefreshRateType() {
     if (!mRefreshRateConfigs.refreshRateSwitchingSupported()) {
-        return RefreshRateType::DEFAULT;
-    }
-
-    // HDR content is not supported on PERFORMANCE mode
-    if (mForceHDRContentToDefaultRefreshRate && mFeatures.isHDRContent) {
-        return RefreshRateType::DEFAULT;
+        return mRefreshRateConfigs.getCurrentRefreshRate().configId;
     }
 
     // If Display Power is not in normal operation we want to be in performance mode.
     // When coming back to normal mode, a grace period is given with DisplayPowerTimer
     if (!mFeatures.isDisplayPowerStateNormal || mFeatures.displayPowerTimer == TimerState::Reset) {
-        return RefreshRateType::PERFORMANCE;
+        return mRefreshRateConfigs.getMaxRefreshRateByPolicy().configId;
     }
 
     // As long as touch is active we want to be in performance mode
     if (mFeatures.touch == TouchState::Active) {
-        return RefreshRateType::PERFORMANCE;
+        return mRefreshRateConfigs.getMaxRefreshRateByPolicy().configId;
     }
 
     // If timer has expired as it means there is no new content on the screen
     if (mFeatures.idleTimer == TimerState::Expired) {
-        return RefreshRateType::DEFAULT;
+        return mRefreshRateConfigs.getMinRefreshRateByPolicy().configId;
     }
 
     // If content detection is off we choose performance as we don't know the content fps
     if (mFeatures.contentDetection == ContentDetectionState::Off) {
-        return RefreshRateType::PERFORMANCE;
+        return mRefreshRateConfigs.getMaxRefreshRateByPolicy().configId;
     }
 
     // Content detection is on, find the appropriate refresh rate with minimal error
-    // TODO(b/139751853): Scan allowed refresh rates only (SurfaceFlinger::mAllowedDisplayConfigs)
-    const float rate = static_cast<float>(mFeatures.contentRefreshRate);
-    auto iter = min_element(mRefreshRateConfigs.getRefreshRateMap().cbegin(),
-                            mRefreshRateConfigs.getRefreshRateMap().cend(),
-                            [rate](const auto& lhs, const auto& rhs) -> bool {
-                                return std::abs(lhs.second.fps - rate) <
-                                        std::abs(rhs.second.fps - rate);
-                            });
-    RefreshRateType currRefreshRateType = iter->first;
-
-    // Some content aligns better on higher refresh rate. For example for 45fps we should choose
-    // 90Hz config. However we should still prefer a lower refresh rate if the content doesn't
-    // align well with both
-    constexpr float MARGIN = 0.05f;
-    float ratio = mRefreshRateConfigs.getRefreshRateFromType(currRefreshRateType).fps / rate;
-    if (std::abs(std::round(ratio) - ratio) > MARGIN) {
-        while (iter != mRefreshRateConfigs.getRefreshRateMap().cend()) {
-            ratio = iter->second.fps / rate;
-
-            if (std::abs(std::round(ratio) - ratio) <= MARGIN) {
-                currRefreshRateType = iter->first;
-                break;
-            }
-            ++iter;
-        }
-    }
-
-    return currRefreshRateType;
+    return mRefreshRateConfigs
+            .getRefreshRateForContent(static_cast<float>(mFeatures.contentRefreshRate))
+            .configId;
 }
 
-Scheduler::RefreshRateType Scheduler::getPreferredRefreshRateType() {
+std::optional<HwcConfigIndexType> Scheduler::getPreferredConfigId() {
     std::lock_guard<std::mutex> lock(mFeatureStateLock);
-    return mFeatures.refreshRateType;
+    return mFeatures.configId;
 }
 
-void Scheduler::changeRefreshRate(RefreshRateType refreshRateType, ConfigEvent configEvent) {
+void Scheduler::changeRefreshRate(const RefreshRate& refreshRate, ConfigEvent configEvent) {
     std::lock_guard<std::mutex> lock(mCallbackLock);
-    if (mChangeRefreshRateCallback) {
-        mChangeRefreshRateCallback(refreshRateType, configEvent);
+    if (mSchedulerCallback) {
+        mSchedulerCallback->changeRefreshRate(refreshRate, configEvent);
     }
 }
 
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 346896c..04a8390 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -34,6 +34,8 @@
 
 namespace android {
 
+using namespace std::chrono_literals;
+
 class DispSync;
 class FenceTime;
 class InjectVSyncSource;
@@ -41,10 +43,14 @@
 
 class Scheduler {
 public:
-    using RefreshRateType = scheduler::RefreshRateConfigs::RefreshRateType;
+    using RefreshRate = scheduler::RefreshRateConfigs::RefreshRate;
     using ConfigEvent = scheduler::RefreshRateConfigEvent;
 
-    using ChangeRefreshRateCallback = std::function<void(RefreshRateType, ConfigEvent)>;
+    class ISchedulerCallback {
+    public:
+        virtual ~ISchedulerCallback() = default;
+        virtual void changeRefreshRate(const RefreshRate&, ConfigEvent) = 0;
+    };
 
     // Indicates whether to start the transaction early, or at vsync time.
     enum class TransactionStart { EARLY, NORMAL };
@@ -67,7 +73,7 @@
     sp<EventThreadConnection> getEventConnection(ConnectionHandle);
 
     void onHotplugReceived(ConnectionHandle, PhysicalDisplayId, bool connected);
-    void onConfigChanged(ConnectionHandle, PhysicalDisplayId, int32_t configId);
+    void onConfigChanged(ConnectionHandle, PhysicalDisplayId, HwcConfigIndexType configId);
 
     void onScreenAcquired(ConnectionHandle);
     void onScreenReleased(ConnectionHandle);
@@ -103,13 +109,13 @@
 
     // Layers are registered on creation, and unregistered when the weak reference expires.
     void registerLayer(Layer*);
-    void recordLayerHistory(Layer*, nsecs_t presentTime, bool isHDR);
+    void recordLayerHistory(Layer*, nsecs_t presentTime);
 
     // Detects content using layer history, and selects a matching refresh rate.
     void chooseRefreshRateForContent();
 
-    // Called by Scheduler to change refresh rate.
-    void setChangeRefreshRateCallback(ChangeRefreshRateCallback&&);
+    // Called by Scheduler to control SurfaceFlinger operations.
+    void setSchedulerCallback(ISchedulerCallback*);
 
     bool isIdleTimerEnabled() const { return mIdleTimer.has_value(); }
     void resetIdleTimer();
@@ -122,8 +128,8 @@
     void dump(std::string&) const;
     void dump(ConnectionHandle, std::string&) const;
 
-    // Get the appropriate refresh type for current conditions.
-    RefreshRateType getPreferredRefreshRateType();
+    // Get the appropriate refresh for current conditions.
+    std::optional<HwcConfigIndexType> getPreferredConfigId();
 
 private:
     friend class TestableScheduler;
@@ -158,9 +164,9 @@
 
     void setVsyncPeriod(nsecs_t period);
 
-    RefreshRateType calculateRefreshRateType() REQUIRES(mFeatureStateLock);
+    HwcConfigIndexType calculateRefreshRateType() REQUIRES(mFeatureStateLock);
     // Acquires a lock and calls the ChangeRefreshRateCallback with given parameters.
-    void changeRefreshRate(RefreshRateType, ConfigEvent);
+    void changeRefreshRate(const RefreshRate&, ConfigEvent);
 
     // Stores EventThread associated with a given VSyncSource, and an initial EventThreadConnection.
     struct Connection {
@@ -198,7 +204,7 @@
     std::optional<scheduler::OneShotTimer> mDisplayPowerTimer;
 
     std::mutex mCallbackLock;
-    ChangeRefreshRateCallback mChangeRefreshRateCallback GUARDED_BY(mCallbackLock);
+    ISchedulerCallback* mSchedulerCallback GUARDED_BY(mCallbackLock) = nullptr;
 
     // In order to make sure that the features don't override themselves, we need a state machine
     // to keep track which feature requested the config change.
@@ -210,17 +216,13 @@
         TouchState touch = TouchState::Inactive;
         TimerState displayPowerTimer = TimerState::Expired;
 
-        RefreshRateType refreshRateType = RefreshRateType::DEFAULT;
+        std::optional<HwcConfigIndexType> configId;
         uint32_t contentRefreshRate = 0;
 
-        bool isHDRContent = false;
         bool isDisplayPowerStateNormal = true;
     } mFeatures GUARDED_BY(mFeatureStateLock);
 
     const scheduler::RefreshRateConfigs& mRefreshRateConfigs;
-
-    // Global config to force HDR content to work on DEFAULT refreshRate
-    static constexpr bool mForceHDRContentToDefaultRefreshRate = false;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/Scheduler/StrongTyping.h b/services/surfaceflinger/Scheduler/StrongTyping.h
index 02db022..e8ca0ba 100644
--- a/services/surfaceflinger/Scheduler/StrongTyping.h
+++ b/services/surfaceflinger/Scheduler/StrongTyping.h
@@ -51,13 +51,22 @@
     inline bool operator>(T const& other) const { return !(*this < other || *this == other); }
 };
 
+template <typename T>
+struct Hash : Ability<T, Hash> {
+    [[nodiscard]] std::size_t hash() const {
+        return std::hash<typename std::remove_const<
+                typename std::remove_reference<decltype(this->base().value())>::type>::type>{}(
+                this->base().value());
+    }
+};
+
 template <typename T, typename W, template <typename> class... Ability>
 struct StrongTyping : Ability<StrongTyping<T, W, Ability...>>... {
     StrongTyping() : mValue(0) {}
     explicit StrongTyping(T const& value) : mValue(value) {}
     StrongTyping(StrongTyping const&) = default;
     StrongTyping& operator=(StrongTyping const&) = default;
-    inline operator T() const { return mValue; }
+    explicit inline operator T() const { return mValue; }
     T const& value() const { return mValue; }
     T& value() { return mValue; }
 
@@ -65,3 +74,12 @@
     T mValue;
 };
 } // namespace android
+
+namespace std {
+template <typename T, typename W, template <typename> class... Ability>
+struct hash<android::StrongTyping<T, W, Ability...>> {
+    std::size_t operator()(android::StrongTyping<T, W, Ability...> const& k) const {
+        return k.hash();
+    }
+};
+} // namespace std
diff --git a/services/surfaceflinger/Scheduler/TimeKeeper.h b/services/surfaceflinger/Scheduler/TimeKeeper.h
index 699cd50..38f0708 100644
--- a/services/surfaceflinger/Scheduler/TimeKeeper.h
+++ b/services/surfaceflinger/Scheduler/TimeKeeper.h
@@ -21,10 +21,24 @@
 
 namespace android::scheduler {
 
+class Clock {
+public:
+    virtual ~Clock();
+    /*
+     * Returns the SYSTEM_TIME_MONOTONIC, used by testing infra to stub time.
+     */
+    virtual nsecs_t now() const = 0;
+
+protected:
+    Clock() = default;
+    Clock(Clock const&) = delete;
+    Clock& operator=(Clock const&) = delete;
+};
+
 /*
  * TimeKeeper is the interface for a single-shot timer primitive.
  */
-class TimeKeeper {
+class TimeKeeper : public Clock {
 public:
     virtual ~TimeKeeper();
 
@@ -39,11 +53,6 @@
      */
     virtual void alarmCancel() = 0;
 
-    /*
-     * Returns the SYSTEM_TIME_MONOTONIC, used by testing infra to stub time.
-     */
-    virtual nsecs_t now() const = 0;
-
 protected:
     TimeKeeper(TimeKeeper const&) = delete;
     TimeKeeper& operator=(TimeKeeper const&) = delete;
diff --git a/services/surfaceflinger/Scheduler/VSyncDispatch.h b/services/surfaceflinger/Scheduler/VSyncDispatch.h
index 4a4bef8..e001080 100644
--- a/services/surfaceflinger/Scheduler/VSyncDispatch.h
+++ b/services/surfaceflinger/Scheduler/VSyncDispatch.h
@@ -34,7 +34,7 @@
  */
 class VSyncDispatch {
 public:
-    using CallbackToken = StrongTyping<size_t, class CallbackTokenTag, Compare>;
+    using CallbackToken = StrongTyping<size_t, class CallbackTokenTag, Compare, Hash>;
 
     virtual ~VSyncDispatch();
 
diff --git a/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp b/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp
index 7922484..a79fe98 100644
--- a/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.cpp
@@ -47,22 +47,26 @@
     return {mArmedInfo->mActualWakeupTime};
 }
 
-nsecs_t VSyncDispatchTimerQueueEntry::schedule(nsecs_t workDuration, nsecs_t earliestVsync,
-                                               VSyncTracker& tracker, nsecs_t now) {
+ScheduleResult VSyncDispatchTimerQueueEntry::schedule(nsecs_t workDuration, nsecs_t earliestVsync,
+                                                      VSyncTracker& tracker, nsecs_t now) {
+    auto const nextVsyncTime =
+            tracker.nextAnticipatedVSyncTimeFrom(std::max(earliestVsync, now + workDuration));
+    if (mLastDispatchTime >= nextVsyncTime) { // already dispatched a callback for this vsync
+        return ScheduleResult::CannotSchedule;
+    }
+
+    auto const nextWakeupTime = nextVsyncTime - workDuration;
+    auto result = mArmedInfo ? ScheduleResult::ReScheduled : ScheduleResult::Scheduled;
     mWorkDuration = workDuration;
     mEarliestVsync = earliestVsync;
-    arm(tracker, now);
-    return mArmedInfo->mActualWakeupTime;
+    mArmedInfo = {nextWakeupTime, nextVsyncTime};
+    return result;
 }
 
 void VSyncDispatchTimerQueueEntry::update(VSyncTracker& tracker, nsecs_t now) {
     if (!mArmedInfo) {
         return;
     }
-    arm(tracker, now);
-}
-
-void VSyncDispatchTimerQueueEntry::arm(VSyncTracker& tracker, nsecs_t now) {
     auto const nextVsyncTime =
             tracker.nextAnticipatedVSyncTimeFrom(std::max(mEarliestVsync, now + mWorkDuration));
     mArmedInfo = {nextVsyncTime - mWorkDuration, nextVsyncTime};
@@ -214,16 +218,13 @@
             return result;
         }
         auto& callback = it->second;
-        result = callback->wakeupTime() ? ScheduleResult::ReScheduled : ScheduleResult::Scheduled;
-
         auto const now = mTimeKeeper->now();
-        auto const wakeupTime = callback->schedule(workDuration, earliestVsync, mTracker, now);
-
-        if (wakeupTime < now - mTimerSlack || callback->lastExecutedVsyncTarget() > wakeupTime) {
-            return ScheduleResult::CannotSchedule;
+        result = callback->schedule(workDuration, earliestVsync, mTracker, now);
+        if (result == ScheduleResult::CannotSchedule) {
+            return result;
         }
 
-        if (wakeupTime < mIntendedWakeupTime - mTimerSlack) {
+        if (callback->wakeupTime() < mIntendedWakeupTime - mTimerSlack) {
             rearmTimerSkippingUpdateFor(now, it);
         }
     }
diff --git a/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.h b/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.h
index f058099..fc78da3 100644
--- a/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.h
+++ b/services/surfaceflinger/Scheduler/VSyncDispatchTimerQueue.h
@@ -44,8 +44,8 @@
     std::optional<nsecs_t> lastExecutedVsyncTarget() const;
 
     // This moves the state from disarmed->armed and will calculate the wakeupTime.
-    nsecs_t schedule(nsecs_t workDuration, nsecs_t earliestVsync, VSyncTracker& tracker,
-                     nsecs_t now);
+    ScheduleResult schedule(nsecs_t workDuration, nsecs_t earliestVsync, VSyncTracker& tracker,
+                            nsecs_t now);
     // This will update armed entries with the latest vsync information. Entry remains armed.
     void update(VSyncTracker& tracker, nsecs_t now);
 
@@ -67,7 +67,6 @@
     void ensureNotRunning();
 
 private:
-    void arm(VSyncTracker& tracker, nsecs_t now);
     std::string const mName;
     std::function<void(nsecs_t)> const mCallback;
 
@@ -106,7 +105,8 @@
     VSyncDispatchTimerQueue(VSyncDispatchTimerQueue const&) = delete;
     VSyncDispatchTimerQueue& operator=(VSyncDispatchTimerQueue const&) = delete;
 
-    using CallbackMap = std::unordered_map<size_t, std::shared_ptr<VSyncDispatchTimerQueueEntry>>;
+    using CallbackMap =
+            std::unordered_map<CallbackToken, std::shared_ptr<VSyncDispatchTimerQueueEntry>>;
 
     void timerCallback();
     void setTimer(nsecs_t, nsecs_t) REQUIRES(mMutex);
diff --git a/services/surfaceflinger/Scheduler/VSyncModulator.cpp b/services/surfaceflinger/Scheduler/VSyncModulator.cpp
index 27fd76c..8de35b1 100644
--- a/services/surfaceflinger/Scheduler/VSyncModulator.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.cpp
@@ -134,18 +134,13 @@
         return;
     }
 
-    const bool isDefault = mOffsets.fpsMode == RefreshRateType::DEFAULT;
-    const bool isPerformance = mOffsets.fpsMode == RefreshRateType::PERFORMANCE;
     const bool isEarly = &offsets == &mOffsetsConfig.early;
     const bool isEarlyGl = &offsets == &mOffsetsConfig.earlyGl;
     const bool isLate = &offsets == &mOffsetsConfig.late;
 
-    ATRACE_INT("Vsync-EarlyOffsetsOn", isDefault && isEarly);
-    ATRACE_INT("Vsync-EarlyGLOffsetsOn", isDefault && isEarlyGl);
-    ATRACE_INT("Vsync-LateOffsetsOn", isDefault && isLate);
-    ATRACE_INT("Vsync-HighFpsEarlyOffsetsOn", isPerformance && isEarly);
-    ATRACE_INT("Vsync-HighFpsEarlyGLOffsetsOn", isPerformance && isEarlyGl);
-    ATRACE_INT("Vsync-HighFpsLateOffsetsOn", isPerformance && isLate);
+    ATRACE_INT("Vsync-EarlyOffsetsOn", isEarly);
+    ATRACE_INT("Vsync-EarlyGLOffsetsOn", isEarlyGl);
+    ATRACE_INT("Vsync-LateOffsetsOn", isLate);
 }
 
 } // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/VSyncModulator.h b/services/surfaceflinger/Scheduler/VSyncModulator.h
index 727cef2..63c0feb 100644
--- a/services/surfaceflinger/Scheduler/VSyncModulator.h
+++ b/services/surfaceflinger/Scheduler/VSyncModulator.h
@@ -37,13 +37,10 @@
     // switch in and out of gl composition.
     static constexpr int MIN_EARLY_GL_FRAME_COUNT_TRANSACTION = 2;
 
-    using RefreshRateType = RefreshRateConfigs::RefreshRateType;
-
 public:
     // Wrapper for a collection of surfaceflinger/app offsets for a particular
     // configuration.
     struct Offsets {
-        RefreshRateType fpsMode;
         nsecs_t sf;
         nsecs_t app;
     };
diff --git a/services/surfaceflinger/Scheduler/VSyncPredictor.cpp b/services/surfaceflinger/Scheduler/VSyncPredictor.cpp
new file mode 100644
index 0000000..3894992
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/VSyncPredictor.cpp
@@ -0,0 +1,213 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+//#define LOG_NDEBUG 0
+#include "VSyncPredictor.h"
+#include <android-base/logging.h>
+#include <cutils/compiler.h>
+#include <utils/Log.h>
+#include <utils/Trace.h>
+#include <algorithm>
+#include <chrono>
+#include "SchedulerUtils.h"
+
+namespace android::scheduler {
+static auto constexpr kNeedsSamplesTag = "SamplesRequested";
+static auto constexpr kMaxPercent = 100u;
+
+VSyncPredictor::~VSyncPredictor() = default;
+
+VSyncPredictor::VSyncPredictor(nsecs_t idealPeriod, size_t historySize,
+                               size_t minimumSamplesForPrediction, uint32_t outlierTolerancePercent)
+      : kHistorySize(historySize),
+        kMinimumSamplesForPrediction(minimumSamplesForPrediction),
+        kOutlierTolerancePercent(std::min(outlierTolerancePercent, kMaxPercent)),
+        mIdealPeriod(idealPeriod) {
+    mRateMap[mIdealPeriod] = {idealPeriod, 0};
+}
+
+inline size_t VSyncPredictor::next(int i) const {
+    return (i + 1) % timestamps.size();
+}
+
+bool VSyncPredictor::validate(nsecs_t timestamp) const {
+    if (lastTimestampIndex < 0 || timestamps.empty()) {
+        return true;
+    }
+
+    auto const aValidTimestamp = timestamps[lastTimestampIndex];
+    auto const percent = (timestamp - aValidTimestamp) % mIdealPeriod * kMaxPercent / mIdealPeriod;
+    return percent < kOutlierTolerancePercent || percent > (kMaxPercent - kOutlierTolerancePercent);
+}
+
+nsecs_t VSyncPredictor::currentPeriod() const {
+    std::lock_guard<std::mutex> lk(mMutex);
+    return std::get<0>(mRateMap.find(mIdealPeriod)->second);
+}
+
+void VSyncPredictor::addVsyncTimestamp(nsecs_t timestamp) {
+    std::lock_guard<std::mutex> lk(mMutex);
+
+    if (!validate(timestamp)) {
+        ALOGW("timestamp was too far off the last known timestamp");
+        return;
+    }
+
+    if (timestamps.size() != kHistorySize) {
+        timestamps.push_back(timestamp);
+        lastTimestampIndex = next(lastTimestampIndex);
+    } else {
+        lastTimestampIndex = next(lastTimestampIndex);
+        timestamps[lastTimestampIndex] = timestamp;
+    }
+
+    if (timestamps.size() < kMinimumSamplesForPrediction) {
+        mRateMap[mIdealPeriod] = {mIdealPeriod, 0};
+        return;
+    }
+
+    // This is a 'simple linear regression' calculation of Y over X, with Y being the
+    // vsync timestamps, and X being the ordinal of vsync count.
+    // The calculated slope is the vsync period.
+    // Formula for reference:
+    // Sigma_i: means sum over all timestamps.
+    // mean(variable): statistical mean of variable.
+    // X: snapped ordinal of the timestamp
+    // Y: vsync timestamp
+    //
+    //         Sigma_i( (X_i - mean(X)) * (Y_i - mean(Y) )
+    // slope = -------------------------------------------
+    //         Sigma_i ( X_i - mean(X) ) ^ 2
+    //
+    // intercept = mean(Y) - slope * mean(X)
+    //
+    std::vector<nsecs_t> vsyncTS(timestamps.size());
+    std::vector<nsecs_t> ordinals(timestamps.size());
+
+    // normalizing to the oldest timestamp cuts down on error in calculating the intercept.
+    auto const oldest_ts = *std::min_element(timestamps.begin(), timestamps.end());
+    auto it = mRateMap.find(mIdealPeriod);
+    auto const currentPeriod = std::get<0>(it->second);
+    // TODO (b/144707443): its important that there's some precision in the mean of the ordinals
+    //                     for the intercept calculation, so scale the ordinals by 10 to continue
+    //                     fixed point calculation. Explore expanding
+    //                     scheduler::utils::calculate_mean to have a fixed point fractional part.
+    static constexpr int kScalingFactor = 10;
+
+    for (auto i = 0u; i < timestamps.size(); i++) {
+        vsyncTS[i] = timestamps[i] - oldest_ts;
+        ordinals[i] = ((vsyncTS[i] + (currentPeriod / 2)) / currentPeriod) * kScalingFactor;
+    }
+
+    auto meanTS = scheduler::calculate_mean(vsyncTS);
+    auto meanOrdinal = scheduler::calculate_mean(ordinals);
+    for (auto i = 0; i < vsyncTS.size(); i++) {
+        vsyncTS[i] -= meanTS;
+        ordinals[i] -= meanOrdinal;
+    }
+
+    auto top = 0ll;
+    auto bottom = 0ll;
+    for (auto i = 0; i < vsyncTS.size(); i++) {
+        top += vsyncTS[i] * ordinals[i];
+        bottom += ordinals[i] * ordinals[i];
+    }
+
+    if (CC_UNLIKELY(bottom == 0)) {
+        it->second = {mIdealPeriod, 0};
+        return;
+    }
+
+    nsecs_t const anticipatedPeriod = top / bottom * kScalingFactor;
+    nsecs_t const intercept = meanTS - (anticipatedPeriod * meanOrdinal / kScalingFactor);
+
+    it->second = {anticipatedPeriod, intercept};
+
+    ALOGV("model update ts: %" PRId64 " slope: %" PRId64 " intercept: %" PRId64, timestamp,
+          anticipatedPeriod, intercept);
+}
+
+nsecs_t VSyncPredictor::nextAnticipatedVSyncTimeFrom(nsecs_t timePoint) const {
+    std::lock_guard<std::mutex> lk(mMutex);
+
+    auto const [slope, intercept] = getVSyncPredictionModel(lk);
+
+    if (timestamps.empty()) {
+        auto const knownTimestamp = mKnownTimestamp ? *mKnownTimestamp : timePoint;
+        auto const numPeriodsOut = ((timePoint - knownTimestamp) / mIdealPeriod) + 1;
+        return knownTimestamp + numPeriodsOut * mIdealPeriod;
+    }
+
+    auto const oldest = *std::min_element(timestamps.begin(), timestamps.end());
+    auto const ordinalRequest = (timePoint - oldest + slope) / slope;
+    auto const prediction = (ordinalRequest * slope) + intercept + oldest;
+
+    ALOGV("prediction made from: %" PRId64 " prediction: %" PRId64 " (+%" PRId64 ") slope: %" PRId64
+          " intercept: %" PRId64,
+          timePoint, prediction, prediction - timePoint, slope, intercept);
+    return prediction;
+}
+
+std::tuple<nsecs_t, nsecs_t> VSyncPredictor::getVSyncPredictionModel() const {
+    std::lock_guard<std::mutex> lk(mMutex);
+    return VSyncPredictor::getVSyncPredictionModel(lk);
+}
+
+std::tuple<nsecs_t, nsecs_t> VSyncPredictor::getVSyncPredictionModel(
+        std::lock_guard<std::mutex> const&) const {
+    return mRateMap.find(mIdealPeriod)->second;
+}
+
+void VSyncPredictor::setPeriod(nsecs_t period) {
+    ATRACE_CALL();
+
+    std::lock_guard<std::mutex> lk(mMutex);
+    static constexpr size_t kSizeLimit = 30;
+    if (CC_UNLIKELY(mRateMap.size() == kSizeLimit)) {
+        mRateMap.erase(mRateMap.begin());
+    }
+
+    mIdealPeriod = period;
+    if (mRateMap.find(period) == mRateMap.end()) {
+        mRateMap[mIdealPeriod] = {period, 0};
+    }
+
+    if (!timestamps.empty()) {
+        mKnownTimestamp = *std::max_element(timestamps.begin(), timestamps.end());
+        timestamps.clear();
+        lastTimestampIndex = 0;
+    }
+}
+
+bool VSyncPredictor::needsMoreSamples(nsecs_t now) const {
+    using namespace std::literals::chrono_literals;
+    std::lock_guard<std::mutex> lk(mMutex);
+    bool needsMoreSamples = true;
+    if (timestamps.size() >= kMinimumSamplesForPrediction) {
+        nsecs_t constexpr aLongTime =
+                std::chrono::duration_cast<std::chrono::nanoseconds>(500ms).count();
+        if (!(lastTimestampIndex < 0 || timestamps.empty())) {
+            auto const lastTimestamp = timestamps[lastTimestampIndex];
+            needsMoreSamples = !((lastTimestamp + aLongTime) > now);
+        }
+    }
+
+    ATRACE_INT(kNeedsSamplesTag, needsMoreSamples);
+    return needsMoreSamples;
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/VSyncPredictor.h b/services/surfaceflinger/Scheduler/VSyncPredictor.h
new file mode 100644
index 0000000..4210b3c
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/VSyncPredictor.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/thread_annotations.h>
+#include <mutex>
+#include <unordered_map>
+#include <vector>
+#include "VSyncTracker.h"
+
+namespace android::scheduler {
+
+class VSyncPredictor : public VSyncTracker {
+public:
+    /*
+     * \param [in] idealPeriod  The initial ideal period to use.
+     * \param [in] historySize  The internal amount of entries to store in the model.
+     * \param [in] minimumSamplesForPrediction The minimum number of samples to collect before
+     * predicting. \param [in] outlierTolerancePercent a number 0 to 100 that will be used to filter
+     * samples that fall outlierTolerancePercent from an anticipated vsync event.
+     */
+    VSyncPredictor(nsecs_t idealPeriod, size_t historySize, size_t minimumSamplesForPrediction,
+                   uint32_t outlierTolerancePercent);
+    ~VSyncPredictor();
+
+    void addVsyncTimestamp(nsecs_t timestamp) final;
+    nsecs_t nextAnticipatedVSyncTimeFrom(nsecs_t timePoint) const final;
+    nsecs_t currentPeriod() const final;
+
+    /*
+     * Inform the model that the period is anticipated to change to a new value.
+     * model will use the period parameter to predict vsync events until enough
+     * timestamps with the new period have been collected.
+     *
+     * \param [in] period   The new period that should be used.
+     */
+    void setPeriod(nsecs_t period);
+
+    /* Query if the model is in need of more samples to make a prediction at timePoint.
+     * \param [in] timePoint    The timePoint to inquire of.
+     * \return  True, if model would benefit from more samples, False if not.
+     */
+    bool needsMoreSamples(nsecs_t timePoint) const;
+
+    std::tuple<nsecs_t /* slope */, nsecs_t /* intercept */> getVSyncPredictionModel() const;
+
+private:
+    VSyncPredictor(VSyncPredictor const&) = delete;
+    VSyncPredictor& operator=(VSyncPredictor const&) = delete;
+
+    size_t const kHistorySize;
+    size_t const kMinimumSamplesForPrediction;
+    size_t const kOutlierTolerancePercent;
+
+    std::mutex mutable mMutex;
+    size_t next(int i) const REQUIRES(mMutex);
+    bool validate(nsecs_t timestamp) const REQUIRES(mMutex);
+    std::tuple<nsecs_t, nsecs_t> getVSyncPredictionModel(std::lock_guard<std::mutex> const&) const
+            REQUIRES(mMutex);
+
+    nsecs_t mIdealPeriod GUARDED_BY(mMutex);
+    std::optional<nsecs_t> mKnownTimestamp GUARDED_BY(mMutex);
+
+    std::unordered_map<nsecs_t, std::tuple<nsecs_t, nsecs_t>> mutable mRateMap GUARDED_BY(mMutex);
+
+    int lastTimestampIndex GUARDED_BY(mMutex) = 0;
+    std::vector<nsecs_t> timestamps GUARDED_BY(mMutex);
+};
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.cpp b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
new file mode 100644
index 0000000..f2a7791
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2019 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 "VSyncReactor.h"
+#include "TimeKeeper.h"
+#include "VSyncDispatch.h"
+#include "VSyncTracker.h"
+
+namespace android::scheduler {
+
+Clock::~Clock() = default;
+
+VSyncReactor::VSyncReactor(std::unique_ptr<Clock> clock, std::unique_ptr<VSyncDispatch> dispatch,
+                           std::unique_ptr<VSyncTracker> tracker, size_t pendingFenceLimit)
+      : mClock(std::move(clock)),
+        mDispatch(std::move(dispatch)),
+        mTracker(std::move(tracker)),
+        mPendingLimit(pendingFenceLimit) {}
+
+bool VSyncReactor::addPresentFence(const std::shared_ptr<FenceTime>& fence) {
+    if (!fence) {
+        return false;
+    }
+
+    nsecs_t const signalTime = fence->getCachedSignalTime();
+    if (signalTime == Fence::SIGNAL_TIME_INVALID) {
+        return true;
+    }
+
+    std::lock_guard<std::mutex> lk(mMutex);
+    if (mIgnorePresentFences) {
+        return true;
+    }
+
+    for (auto it = mUnfiredFences.begin(); it != mUnfiredFences.end();) {
+        auto const time = (*it)->getCachedSignalTime();
+        if (time == Fence::SIGNAL_TIME_PENDING) {
+            it++;
+        } else if (time == Fence::SIGNAL_TIME_INVALID) {
+            it = mUnfiredFences.erase(it);
+        } else {
+            mTracker->addVsyncTimestamp(time);
+            it = mUnfiredFences.erase(it);
+        }
+    }
+
+    if (signalTime == Fence::SIGNAL_TIME_PENDING) {
+        if (mPendingLimit == mUnfiredFences.size()) {
+            mUnfiredFences.erase(mUnfiredFences.begin());
+        }
+        mUnfiredFences.push_back(fence);
+    } else {
+        mTracker->addVsyncTimestamp(signalTime);
+    }
+
+    return false; // TODO(b/144707443): add policy for turning on HWVsync.
+}
+
+void VSyncReactor::setIgnorePresentFences(bool ignoration) {
+    std::lock_guard<std::mutex> lk(mMutex);
+    mIgnorePresentFences = ignoration;
+    if (mIgnorePresentFences == true) {
+        mUnfiredFences.clear();
+    }
+}
+
+nsecs_t VSyncReactor::computeNextRefresh(int periodOffset) const {
+    auto const now = mClock->now();
+    auto const currentPeriod = periodOffset ? mTracker->currentPeriod() : 0;
+    return mTracker->nextAnticipatedVSyncTimeFrom(now + periodOffset * currentPeriod);
+}
+
+nsecs_t VSyncReactor::expectedPresentTime() {
+    return mTracker->nextAnticipatedVSyncTimeFrom(mClock->now());
+}
+
+void VSyncReactor::setPeriod(nsecs_t period) {
+    mTracker->setPeriod(period);
+    {
+        std::lock_guard<std::mutex> lk(mMutex);
+        mPeriodChangeInProgress = true;
+    }
+}
+
+nsecs_t VSyncReactor::getPeriod() {
+    return mTracker->currentPeriod();
+}
+
+void VSyncReactor::beginResync() {}
+
+void VSyncReactor::endResync() {}
+
+bool VSyncReactor::addResyncSample(nsecs_t timestamp, bool* periodFlushed) {
+    assert(periodFlushed);
+    mTracker->addVsyncTimestamp(timestamp);
+    {
+        std::lock_guard<std::mutex> lk(mMutex);
+        *periodFlushed = mPeriodChangeInProgress;
+        mPeriodChangeInProgress = false;
+    }
+    return false;
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.h b/services/surfaceflinger/Scheduler/VSyncReactor.h
new file mode 100644
index 0000000..786ee98
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/thread_annotations.h>
+#include <ui/FenceTime.h>
+#include <memory>
+#include <mutex>
+#include <vector>
+
+namespace android::scheduler {
+
+class Clock;
+class VSyncDispatch;
+class VSyncTracker;
+
+// TODO (b/145217110): consider renaming.
+class VSyncReactor /* TODO (b/140201379): : public android::DispSync */ {
+public:
+    VSyncReactor(std::unique_ptr<Clock> clock, std::unique_ptr<VSyncDispatch> dispatch,
+                 std::unique_ptr<VSyncTracker> tracker, size_t pendingFenceLimit);
+
+    bool addPresentFence(const std::shared_ptr<FenceTime>& fence);
+    void setIgnorePresentFences(bool ignoration);
+
+    nsecs_t computeNextRefresh(int periodOffset) const;
+    nsecs_t expectedPresentTime();
+
+    void setPeriod(nsecs_t period);
+    nsecs_t getPeriod();
+
+    // TODO: (b/145626181) remove begin,endResync functions from DispSync i/f when possible.
+    void beginResync();
+    bool addResyncSample(nsecs_t timestamp, bool* periodFlushed);
+    void endResync();
+
+private:
+    std::unique_ptr<Clock> const mClock;
+    std::unique_ptr<VSyncDispatch> const mDispatch;
+    std::unique_ptr<VSyncTracker> const mTracker;
+    size_t const mPendingLimit;
+
+    std::mutex mMutex;
+    bool mIgnorePresentFences GUARDED_BY(mMutex) = false;
+    std::vector<std::shared_ptr<FenceTime>> mUnfiredFences GUARDED_BY(mMutex);
+    bool mPeriodChangeInProgress GUARDED_BY(mMutex) = false;
+};
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/VSyncTracker.h b/services/surfaceflinger/Scheduler/VSyncTracker.h
index 97b9620..6be63fe 100644
--- a/services/surfaceflinger/Scheduler/VSyncTracker.h
+++ b/services/surfaceflinger/Scheduler/VSyncTracker.h
@@ -47,6 +47,20 @@
      */
     virtual nsecs_t nextAnticipatedVSyncTimeFrom(nsecs_t timePoint) const = 0;
 
+    /*
+     * The current period of the vsync signal.
+     *
+     * \return  The current period of the vsync signal
+     */
+    virtual nsecs_t currentPeriod() const = 0;
+
+    /*
+     * Inform the tracker that the period is changing and the tracker needs to recalibrate itself.
+     *
+     * \param [in] period   The period that the system is changing into.
+     */
+    virtual void setPeriod(nsecs_t period) = 0;
+
 protected:
     VSyncTracker(VSyncTracker const&) = delete;
     VSyncTracker& operator=(VSyncTracker const&) = delete;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 7c3181e..9f4dd2b 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -542,14 +542,8 @@
 
         if (mRefreshRateConfigs->refreshRateSwitchingSupported()) {
             // set the refresh rate according to the policy
-            const auto& performanceRefreshRate =
-                    mRefreshRateConfigs->getRefreshRateFromType(RefreshRateType::PERFORMANCE);
-
-            if (isDisplayConfigAllowed(performanceRefreshRate.configId)) {
-                setRefreshRateTo(RefreshRateType::PERFORMANCE, Scheduler::ConfigEvent::None);
-            } else {
-                setRefreshRateTo(RefreshRateType::DEFAULT, Scheduler::ConfigEvent::None);
-            }
+            const auto& performanceRefreshRate = mRefreshRateConfigs->getMaxRefreshRateByPolicy();
+            changeRefreshRateLocked(performanceRefreshRate, Scheduler::ConfigEvent::None);
         }
     }));
 }
@@ -822,9 +816,8 @@
         info.xdpi = xdpi;
         info.ydpi = ydpi;
         info.fps = 1e9 / hwConfig->getVsyncPeriod();
-        const auto refreshRateType =
-                mRefreshRateConfigs->getRefreshRateTypeFromHwcConfigId(hwConfig->getId());
-        const auto offset = mPhaseOffsets->getOffsetsForRefreshRate(refreshRateType);
+
+        const auto offset = mPhaseOffsets->getOffsetsForRefreshRate(info.fps);
         info.appVsyncOffset = offset.late.app;
 
         // This is how far in advance a buffer must be queued for
@@ -874,17 +867,17 @@
     if (display->isPrimary()) {
         std::lock_guard<std::mutex> lock(mActiveConfigLock);
         if (mDesiredActiveConfigChanged) {
-            return mDesiredActiveConfig.configId;
-        } else {
-            return display->getActiveConfig();
+            return mDesiredActiveConfig.configId.value();
         }
-    } else {
-        return display->getActiveConfig();
     }
+
+    return display->getActiveConfig().value();
 }
 
 void SurfaceFlinger::setDesiredActiveConfig(const ActiveConfigInfo& info) {
     ATRACE_CALL();
+    auto refreshRate = mRefreshRateConfigs->getRefreshRateFromConfigId(info.configId);
+    ALOGV("setDesiredActiveConfig(%s)", refreshRate.name.c_str());
 
     // Don't check against the current mode yet. Worst case we set the desired
     // config twice. However event generation config might have changed so we need to update it
@@ -903,13 +896,14 @@
         // As we called to set period, we will call to onRefreshRateChangeCompleted once
         // DispSync model is locked.
         mVSyncModulator->onRefreshRateChangeInitiated();
-        mPhaseOffsets->setRefreshRateType(info.type);
+
+        mPhaseOffsets->setRefreshRateFps(refreshRate.fps);
         mVSyncModulator->setPhaseOffsets(mPhaseOffsets->getCurrentOffsets());
     }
     mDesiredActiveConfigChanged = true;
 
     if (mRefreshRateOverlay) {
-        mRefreshRateOverlay->changeRefreshRate(mDesiredActiveConfig.type);
+        mRefreshRateOverlay->changeRefreshRate(refreshRate);
     }
 }
 
@@ -931,14 +925,15 @@
     }
 
     std::lock_guard<std::mutex> lock(mActiveConfigLock);
-    mRefreshRateConfigs->setCurrentConfig(mUpcomingActiveConfig.configId);
+    mRefreshRateConfigs->setCurrentConfigId(mUpcomingActiveConfig.configId);
     mRefreshRateStats->setConfigMode(mUpcomingActiveConfig.configId);
-
     display->setActiveConfig(mUpcomingActiveConfig.configId);
 
-    mPhaseOffsets->setRefreshRateType(mUpcomingActiveConfig.type);
+    auto refreshRate =
+            mRefreshRateConfigs->getRefreshRateFromConfigId(mUpcomingActiveConfig.configId);
+    mPhaseOffsets->setRefreshRateFps(refreshRate.fps);
     mVSyncModulator->setPhaseOffsets(mPhaseOffsets->getCurrentOffsets());
-    ATRACE_INT("ActiveConfigMode", mUpcomingActiveConfig.configId);
+    ATRACE_INT("ActiveConfigFPS", refreshRate.fps);
 
     if (mUpcomingActiveConfig.event != Scheduler::ConfigEvent::None) {
         mScheduler->onConfigChanged(mAppConnectionHandle, display->getId()->value,
@@ -952,12 +947,15 @@
     mDesiredActiveConfigChanged = false;
 
     mScheduler->resyncToHardwareVsync(true, getVsyncPeriod());
-    mPhaseOffsets->setRefreshRateType(mUpcomingActiveConfig.type);
+    auto refreshRate =
+            mRefreshRateConfigs->getRefreshRateFromConfigId(mDesiredActiveConfig.configId);
+    mPhaseOffsets->setRefreshRateFps(refreshRate.fps);
     mVSyncModulator->setPhaseOffsets(mPhaseOffsets->getCurrentOffsets());
 }
 
 bool SurfaceFlinger::performSetActiveConfig() {
     ATRACE_CALL();
+    ALOGV("performSetActiveConfig");
     if (mCheckPendingFence) {
         if (previousFrameMissed()) {
             // fence has not signaled yet. wait for the next invalidate
@@ -981,6 +979,10 @@
         desiredActiveConfig = mDesiredActiveConfig;
     }
 
+    auto refreshRate =
+            mRefreshRateConfigs->getRefreshRateFromConfigId(desiredActiveConfig.configId);
+    ALOGV("performSetActiveConfig changing active config to %d(%s)", refreshRate.configId.value(),
+          refreshRate.name.c_str());
     const auto display = getDefaultDisplayDeviceLocked();
     if (!display || display->getActiveConfig() == desiredActiveConfig.configId) {
         // display is not valid or we are already in the requested mode
@@ -1001,8 +1003,8 @@
     const auto displayId = display->getId();
     LOG_ALWAYS_FATAL_IF(!displayId);
 
-    ATRACE_INT("ActiveConfigModeHWC", mUpcomingActiveConfig.configId);
-    getHwComposer().setActiveConfig(*displayId, mUpcomingActiveConfig.configId);
+    ATRACE_INT("ActiveConfigFPS_HWC", refreshRate.fps);
+    getHwComposer().setActiveConfig(*displayId, mUpcomingActiveConfig.configId.value());
 
     // we need to submit an empty frame to HWC to start the process
     mCheckPendingFence = true;
@@ -1364,9 +1366,12 @@
 }
 
 void SurfaceFlinger::onVsyncReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
-                                     int64_t timestamp) {
+                                     int64_t timestamp,
+                                     std::optional<hwc2_vsync_period_t> /*vsyncPeriod*/) {
     ATRACE_NAME("SF onVsync");
 
+    // TODO(b/140201379): use vsyncPeriod in the new DispSync
+
     Mutex::Autolock lock(mStateLock);
     // Ignore any vsyncs from a previous hardware composer.
     if (sequenceId != getBE().mComposerSequenceId) {
@@ -1394,11 +1399,12 @@
     *compositorTiming = getBE().mCompositorTiming;
 }
 
-bool SurfaceFlinger::isDisplayConfigAllowed(int32_t configId) const {
+bool SurfaceFlinger::isDisplayConfigAllowed(HwcConfigIndexType configId) const {
     return mAllowedDisplayConfigs.empty() || mAllowedDisplayConfigs.count(configId);
 }
 
-void SurfaceFlinger::setRefreshRateTo(RefreshRateType refreshRate, Scheduler::ConfigEvent event) {
+void SurfaceFlinger::changeRefreshRateLocked(const RefreshRate& refreshRate,
+                                             Scheduler::ConfigEvent event) {
     const auto display = getDefaultDisplayDeviceLocked();
     if (!display || mBootStage != BootStage::FINISHED) {
         return;
@@ -1406,15 +1412,13 @@
     ATRACE_CALL();
 
     // Don't do any updating if the current fps is the same as the new one.
-    const auto& refreshRateConfig = mRefreshRateConfigs->getRefreshRateFromType(refreshRate);
-    const int desiredConfigId = refreshRateConfig.configId;
-
-    if (!isDisplayConfigAllowed(desiredConfigId)) {
-        ALOGV("Skipping config %d as it is not part of allowed configs", desiredConfigId);
+    if (!isDisplayConfigAllowed(refreshRate.configId)) {
+        ALOGV("Skipping config %d as it is not part of allowed configs",
+              refreshRate.configId.value());
         return;
     }
 
-    setDesiredActiveConfig({refreshRate, desiredConfigId, event});
+    setDesiredActiveConfig({refreshRate.configId, event});
 }
 
 void SurfaceFlinger::onHotplugReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
@@ -1443,6 +1447,12 @@
     setTransactionFlags(eDisplayTransactionNeeded);
 }
 
+void SurfaceFlinger::onVsyncPeriodTimingChangedReceived(
+        int32_t /*sequenceId*/, hwc2_display_t /*display*/,
+        const hwc_vsync_period_change_timeline_t& /*updatedTimeline*/) {
+    // TODO(b/142753004): use timeline when changing refresh rate
+}
+
 void SurfaceFlinger::onRefreshReceived(int sequenceId, hwc2_display_t /*hwcDisplayId*/) {
     Mutex::Autolock lock(mStateLock);
     if (sequenceId != getBE().mComposerSequenceId) {
@@ -1724,12 +1734,7 @@
     refreshArgs.layersWithQueuedFrames.reserve(mLayersWithQueuedFrames.size());
     for (sp<Layer> layer : mLayersWithQueuedFrames) {
         auto compositionLayer = layer->getCompositionLayer();
-        if (compositionLayer) {
-            refreshArgs.layersWithQueuedFrames.push_back(compositionLayer.get());
-            mFrameTracer->traceTimestamp(layer->getSequence(), layer->getCurrentBufferId(),
-                                         layer->getCurrentFrameNumber(), systemTime(),
-                                         FrameTracer::FrameEvent::HWC_COMPOSITION_QUEUED);
-        }
+        if (compositionLayer) refreshArgs.layersWithQueuedFrames.push_back(compositionLayer.get());
     }
 
     refreshArgs.repaintEverything = mRepaintEverything.exchange(false);
@@ -2177,7 +2182,8 @@
                                                     Dataspace::UNKNOWN});
     if (!state.isVirtual()) {
         LOG_ALWAYS_FATAL_IF(!displayId);
-        display->setActiveConfig(getHwComposer().getActiveConfigIndex(*displayId));
+        auto activeConfigId = HwcConfigIndexType(getHwComposer().getActiveConfigIndex(*displayId));
+        display->setActiveConfig(activeConfigId);
     }
 
     display->setLayerStack(state.layerStack);
@@ -2517,6 +2523,12 @@
     mCompositionEngine->updateCursorAsync(refreshArgs);
 }
 
+void SurfaceFlinger::changeRefreshRate(const RefreshRate& refreshRate,
+                                       Scheduler::ConfigEvent event) {
+    Mutex::Autolock lock(mStateLock);
+    changeRefreshRateLocked(refreshRate, event);
+}
+
 void SurfaceFlinger::initScheduler(DisplayId primaryDisplayId) {
     if (mScheduler) {
         // In practice it's not allowed to hotplug in/out the primary display once it's been
@@ -2525,7 +2537,7 @@
         return;
     }
 
-    int currentConfig = getHwComposer().getActiveConfigIndex(primaryDisplayId);
+    auto currentConfig = HwcConfigIndexType(getHwComposer().getActiveConfigIndex(primaryDisplayId));
     mRefreshRateConfigs =
             std::make_unique<scheduler::RefreshRateConfigs>(refresh_rate_switching(false),
                                                             getHwComposer().getConfigs(
@@ -2559,11 +2571,7 @@
             new RegionSamplingThread(*this, *mScheduler,
                                      RegionSamplingThread::EnvironmentTimingTunables());
 
-    mScheduler->setChangeRefreshRateCallback(
-            [this](RefreshRateType type, Scheduler::ConfigEvent event) {
-                Mutex::Autolock lock(mStateLock);
-                setRefreshRateTo(type, event);
-            });
+    mScheduler->setSchedulerCallback(this);
 }
 
 void SurfaceFlinger::commitTransaction()
@@ -3126,7 +3134,13 @@
         listenerCallbacks.insert(listener);
     }
 
-    sp<Layer> layer(fromHandle(s.surface));
+    sp<Layer> layer = nullptr;
+    if (s.surface) {
+        layer = fromHandle(s.surface);
+    } else {
+        // The client may provide us a null handle. Treat it as if the layer was removed.
+        ALOGW("Attempt to set client state with a null layer handle");
+    }
     if (layer == nullptr) {
         for (auto& [listener, callbackIds] : s.listeners) {
             mTransactionCompletedThread.registerUnpresentedCallbackHandle(
@@ -3729,7 +3743,6 @@
     }
 
     if (currentMode == HWC_POWER_MODE_OFF) {
-        // Turn on the display
         getHwComposer().setPowerMode(*displayId, mode);
         if (display->isPrimary() && mode != HWC_POWER_MODE_DOZE_SUSPEND) {
             setVsyncEnabledInHWC(*displayId, mHWCVsyncPendingState);
@@ -3961,10 +3974,17 @@
                   dispSyncPresentTimeOffset, getVsyncPeriod());
 
     StringAppendF(&result, "Allowed Display Configs: ");
-    for (int32_t configId : mAllowedDisplayConfigs) {
+    for (auto configId : mAllowedDisplayConfigs) {
         StringAppendF(&result, "%" PRIu32 " Hz, ",
-                      mRefreshRateConfigs->getRefreshRateFromConfigId(configId).fps);
+                      static_cast<int32_t>(
+                              mRefreshRateConfigs->getRefreshRateFromConfigId(configId).fps));
     }
+    StringAppendF(&result,
+                  "DesiredDisplayConfigSpecs: default config ID: %" PRIu32
+                  ", min: %.2f Hz, max: %.2f Hz",
+                  mDesiredDisplayConfigSpecs.defaultModeId,
+                  mDesiredDisplayConfigSpecs.minRefreshRate,
+                  mDesiredDisplayConfigSpecs.maxRefreshRate);
     StringAppendF(&result, "(config override by backdoor: %s)\n\n",
                   mDebugDisplayConfigSetByBackdoor ? "yes" : "no");
 
@@ -4394,13 +4414,16 @@
         case SET_ACTIVE_CONFIG:
         case SET_ALLOWED_DISPLAY_CONFIGS:
         case GET_ALLOWED_DISPLAY_CONFIGS:
+        case SET_DESIRED_DISPLAY_CONFIG_SPECS:
+        case GET_DESIRED_DISPLAY_CONFIG_SPECS:
         case SET_ACTIVE_COLOR_MODE:
         case INJECT_VSYNC:
         case SET_POWER_MODE:
         case GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES:
         case SET_DISPLAY_CONTENT_SAMPLING_ENABLED:
         case GET_DISPLAYED_CONTENT_SAMPLE:
-        case NOTIFY_POWER_HINT: {
+        case NOTIFY_POWER_HINT:
+        case SET_GLOBAL_SHADOW_SETTINGS: {
             if (!callingThreadHasUnscopedSurfaceFlingerAccess()) {
                 IPCThreadState* ipc = IPCThreadState::self();
                 ALOGE("Permission Denial: can't access SurfaceFlinger pid=%d, uid=%d",
@@ -4803,13 +4826,9 @@
                 n = data.readInt32();
                 if (n && !mRefreshRateOverlay &&
                     mRefreshRateConfigs->refreshRateSwitchingSupported()) {
-                    RefreshRateType type;
-                    {
-                        std::lock_guard<std::mutex> lock(mActiveConfigLock);
-                        type = mDesiredActiveConfig.type;
-                    }
                     mRefreshRateOverlay = std::make_unique<RefreshRateOverlay>(*this);
-                    mRefreshRateOverlay->changeRefreshRate(type);
+                    auto current = mRefreshRateConfigs->getCurrentRefreshRate();
+                    mRefreshRateOverlay->changeRefreshRate(current);
                 } else if (!n) {
                     mRefreshRateOverlay.reset();
                 }
@@ -4913,8 +4932,12 @@
     }
     // Couldn't find display by displayId. Try to get display by layerStack since virtual displays
     // may not have a displayId.
+    return getDisplayByLayerStack(displayOrLayerStack);
+}
+
+const sp<DisplayDevice> SurfaceFlinger::getDisplayByLayerStack(uint64_t layerStack) {
     for (const auto& [token, display] : mDisplays) {
-        if (display->getLayerStack() == displayOrLayerStack) {
+        if (display->getLayerStack() == layerStack) {
             return display;
         }
     }
@@ -4970,8 +4993,8 @@
     public:
         LayerRenderArea(SurfaceFlinger* flinger, const sp<Layer>& layer, const Rect crop,
                         int32_t reqWidth, int32_t reqHeight, Dataspace reqDataSpace,
-                        bool childrenOnly)
-              : RenderArea(reqWidth, reqHeight, CaptureFill::CLEAR, reqDataSpace),
+                        bool childrenOnly, const Rect& displayViewport)
+              : RenderArea(reqWidth, reqHeight, CaptureFill::CLEAR, reqDataSpace, displayViewport),
                 mLayer(layer),
                 mCrop(crop),
                 mNeedsFiltering(false),
@@ -5055,7 +5078,7 @@
     sp<Layer> parent;
     Rect crop(sourceCrop);
     std::unordered_set<sp<Layer>, ISurfaceComposer::SpHash<Layer>> excludeLayers;
-
+    Rect displayViewport;
     {
         Mutex::Autolock _l(mStateLock);
 
@@ -5072,14 +5095,21 @@
             return PERMISSION_DENIED;
         }
 
+        Rect parentSourceBounds = parent->getCroppedBufferSize(parent->getCurrentState());
         if (sourceCrop.width() <= 0) {
             crop.left = 0;
-            crop.right = parent->getBufferSize(parent->getCurrentState()).getWidth();
+            crop.right = parentSourceBounds.getWidth();
         }
 
         if (sourceCrop.height() <= 0) {
             crop.top = 0;
-            crop.bottom = parent->getBufferSize(parent->getCurrentState()).getHeight();
+            crop.bottom = parentSourceBounds.getHeight();
+        }
+
+        if (crop.isEmpty() || frameScale <= 0.0f) {
+            // Error out if the layer has no source bounds (i.e. they are boundless) and a source
+            // crop was not specified, or an invalid frame scale was provided.
+            return BAD_VALUE;
         }
         reqWidth = crop.width() * frameScale;
         reqHeight = crop.height() * frameScale;
@@ -5093,6 +5123,13 @@
                 return NAME_NOT_FOUND;
             }
         }
+
+        auto display = getDisplayByLayerStack(parent->getLayerStack());
+        if (!display) {
+            return BAD_VALUE;
+        }
+
+        displayViewport = display->getViewport();
     } // mStateLock
 
     // really small crop or frameScale
@@ -5103,7 +5140,8 @@
         reqHeight = 1;
     }
 
-    LayerRenderArea renderArea(this, parent, crop, reqWidth, reqHeight, reqDataspace, childrenOnly);
+    LayerRenderArea renderArea(this, parent, crop, reqWidth, reqHeight, reqDataspace, childrenOnly,
+                               displayViewport);
     auto traverseLayers = [parent, childrenOnly,
                            &excludeLayers](const LayerVector::Visitor& visitor) {
         parent->traverseChildrenInZOrder(LayerVector::StateSet::Drawing, [&](Layer* layer) {
@@ -5229,6 +5267,7 @@
     const auto rotation = renderArea.getRotationFlags();
     const auto transform = renderArea.getTransform();
     const auto sourceCrop = renderArea.getSourceCrop();
+    const auto& displayViewport = renderArea.getDisplayViewport();
 
     renderengine::DisplaySettings clientCompositionDisplay;
     std::vector<renderengine::LayerSettings> clientCompositionLayers;
@@ -5313,6 +5352,12 @@
         };
         auto result = layer->prepareClientComposition(targetSettings);
         if (result) {
+            std::optional<renderengine::LayerSettings> shadowLayer =
+                    layer->prepareShadowClientComposition(*result, displayViewport,
+                                                          clientCompositionDisplay.outputDataspace);
+            if (shadowLayer) {
+                clientCompositionLayers.push_back(*shadowLayer);
+            }
             clientCompositionLayers.push_back(*result);
         }
     });
@@ -5411,28 +5456,48 @@
     mScheduler->onConfigChanged(mAppConnectionHandle, display->getId()->value,
                                 display->getActiveConfig());
 
-    if (mRefreshRateConfigs->refreshRateSwitchingSupported()) {
-        const auto& type = mScheduler->getPreferredRefreshRateType();
-        const auto& config = mRefreshRateConfigs->getRefreshRateFromType(type);
-        if (isDisplayConfigAllowed(config.configId)) {
-            ALOGV("switching to Scheduler preferred config %d", config.configId);
-            setDesiredActiveConfig({type, config.configId, Scheduler::ConfigEvent::Changed});
-        } else {
-            // Set the highest allowed config by iterating backwards on available refresh rates
-            const auto& refreshRates = mRefreshRateConfigs->getRefreshRateMap();
-            for (auto iter = refreshRates.crbegin(); iter != refreshRates.crend(); ++iter) {
-                if (isDisplayConfigAllowed(iter->second.configId)) {
-                    ALOGV("switching to allowed config %d", iter->second.configId);
-                    setDesiredActiveConfig(
-                            {iter->first, iter->second.configId, Scheduler::ConfigEvent::Changed});
-                    break;
-                }
-            }
+    // Prepare the parameters needed for RefreshRateConfigs::setPolicy. This will change to just
+    // passthrough once DisplayManager provide these parameters directly.
+    const auto refreshRate =
+            mRefreshRateConfigs->getRefreshRateFromConfigId(HwcConfigIndexType(allowedConfigs[0]));
+    const auto defaultModeId = refreshRate.configId;
+    auto minRefreshRateFps = refreshRate.fps;
+    auto maxRefreshRateFps = minRefreshRateFps;
+
+    for (auto config : allowedConfigs) {
+        const auto configRefreshRate =
+                mRefreshRateConfigs->getRefreshRateFromConfigId(HwcConfigIndexType(config));
+        if (configRefreshRate.fps < minRefreshRateFps) {
+            minRefreshRateFps = configRefreshRate.fps;
+        } else if (configRefreshRate.fps > maxRefreshRateFps) {
+            maxRefreshRateFps = configRefreshRate.fps;
         }
-    } else if (!allowedConfigs.empty()) {
-        ALOGV("switching to config %d", allowedConfigs[0]);
-        setDesiredActiveConfig(
-                {RefreshRateType::DEFAULT, allowedConfigs[0], Scheduler::ConfigEvent::Changed});
+    }
+    mRefreshRateConfigs->setPolicy(defaultModeId, minRefreshRateFps, maxRefreshRateFps);
+
+    if (mRefreshRateConfigs->refreshRateSwitchingSupported()) {
+        auto configId = mScheduler->getPreferredConfigId();
+        auto preferredRefreshRate = configId
+                ? mRefreshRateConfigs->getRefreshRateFromConfigId(*configId)
+                : mRefreshRateConfigs->getMinRefreshRateByPolicy();
+        ALOGV("trying to switch to Scheduler preferred config %d (%s)",
+              preferredRefreshRate.configId.value(), preferredRefreshRate.name.c_str());
+        if (isDisplayConfigAllowed(preferredRefreshRate.configId)) {
+            ALOGV("switching to Scheduler preferred config %d",
+                  preferredRefreshRate.configId.value());
+            setDesiredActiveConfig(
+                    {preferredRefreshRate.configId, Scheduler::ConfigEvent::Changed});
+        } else {
+            // Set the highest allowed config
+            setDesiredActiveConfig({mRefreshRateConfigs->getMaxRefreshRateByPolicy().configId,
+                                    Scheduler::ConfigEvent::Changed});
+        }
+    } else {
+        if (!allowedConfigs.empty()) {
+            ALOGV("switching to config %d", allowedConfigs[0]);
+            auto configId = HwcConfigIndexType(allowedConfigs[0]);
+            setDesiredActiveConfig({configId, Scheduler::ConfigEvent::Changed});
+        }
     }
 }
 
@@ -5481,7 +5546,70 @@
     }
 
     if (display->isPrimary()) {
-        outAllowedConfigs->assign(mAllowedDisplayConfigs.begin(), mAllowedDisplayConfigs.end());
+        outAllowedConfigs->reserve(mAllowedDisplayConfigs.size());
+        for (auto configId : mAllowedDisplayConfigs) {
+            outAllowedConfigs->push_back(configId.value());
+        }
+    }
+
+    return NO_ERROR;
+}
+
+status_t SurfaceFlinger::setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                      int32_t defaultModeId, float minRefreshRate,
+                                                      float maxRefreshRate) {
+    ATRACE_CALL();
+
+    if (!displayToken) {
+        return BAD_VALUE;
+    }
+
+    postMessageSync(new LambdaMessage([&]() {
+        const auto display = getDisplayDeviceLocked(displayToken);
+        if (!display) {
+            ALOGE("Attempt to set desired display configs for invalid display token %p",
+                  displayToken.get());
+        } else if (display->isVirtual()) {
+            ALOGW("Attempt to set desired display configs for virtual display");
+        } else {
+            // TODO(b/142507213): Plug through to HWC once the interface is ready.
+            Mutex::Autolock lock(mStateLock);
+            const DesiredDisplayConfigSpecs desiredDisplayConfigSpecs = {defaultModeId,
+                                                                         minRefreshRate,
+                                                                         maxRefreshRate};
+            if (desiredDisplayConfigSpecs == mDesiredDisplayConfigSpecs) {
+                return;
+            }
+            ALOGV("Updating desired display configs");
+            ALOGD("desiredDisplayConfigSpecs: defaultId: %d min: %.f max: %.f decisions: ",
+                  desiredDisplayConfigSpecs.defaultModeId, desiredDisplayConfigSpecs.minRefreshRate,
+                  desiredDisplayConfigSpecs.maxRefreshRate);
+            mDesiredDisplayConfigSpecs = desiredDisplayConfigSpecs;
+        }
+    }));
+    return NO_ERROR;
+}
+
+status_t SurfaceFlinger::getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                                      int32_t* outDefaultModeId,
+                                                      float* outMinRefreshRate,
+                                                      float* outMaxRefreshRate) {
+    ATRACE_CALL();
+
+    if (!displayToken || !outDefaultModeId || !outMinRefreshRate || !outMaxRefreshRate) {
+        return BAD_VALUE;
+    }
+
+    Mutex::Autolock lock(mStateLock);
+    const auto display = getDisplayDeviceLocked(displayToken);
+    if (!display) {
+        return NAME_NOT_FOUND;
+    }
+
+    if (display->isPrimary()) {
+        *outDefaultModeId = mDesiredDisplayConfigSpecs.defaultModeId;
+        *outMinRefreshRate = mDesiredDisplayConfigSpecs.minRefreshRate;
+        *outMaxRefreshRate = mDesiredDisplayConfigSpecs.maxRefreshRate;
     }
 
     return NO_ERROR;
@@ -5510,6 +5638,20 @@
 
 void SurfaceFlinger::onLayerDestroyed(Layer* layer) {
     mNumLayers--;
+    removeFromOffscreenLayers(layer);
+}
+
+// WARNING: ONLY CALL THIS FROM LAYER DTOR
+// Here we add children in the current state to offscreen layers and remove the
+// layer itself from the offscreen layer list.  Since
+// this is the dtor, it is safe to access the current state.  This keeps us
+// from dangling children layers such that they are not reachable from the
+// Drawing state nor the offscreen layer list
+// See b/141111965
+void SurfaceFlinger::removeFromOffscreenLayers(Layer* layer) {
+    for (auto& child : layer->getCurrentChildren()) {
+        mOffscreenLayers.emplace(child.get());
+    }
     mOffscreenLayers.erase(layer);
 }
 
@@ -5517,6 +5659,22 @@
     getRenderEngine().unbindExternalTextureBuffer(clientCacheId.id);
 }
 
+status_t SurfaceFlinger::setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
+                                                 float lightPosY, float lightPosZ,
+                                                 float lightRadius) {
+    Mutex::Autolock _l(mStateLock);
+    mCurrentState.globalShadowSettings.ambientColor = vec4(ambientColor);
+    mCurrentState.globalShadowSettings.spotColor = vec4(spotColor);
+    mCurrentState.globalShadowSettings.lightPos.y = lightPosY;
+    mCurrentState.globalShadowSettings.lightPos.z = lightPosZ;
+    mCurrentState.globalShadowSettings.lightRadius = lightRadius;
+
+    // these values are overridden when calculating the shadow settings for a layer.
+    mCurrentState.globalShadowSettings.lightPos.x = 0.f;
+    mCurrentState.globalShadowSettings.length = 0.f;
+    return NO_ERROR;
+}
+
 } // namespace android
 
 #if defined(__gl_h_)
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 5958109..ae3f2d7 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -37,6 +37,7 @@
 #include <input/ISetInputWindowsListener.h>
 #include <layerproto/LayerProtoHeader.h>
 #include <math/mat4.h>
+#include <renderengine/LayerSettings.h>
 #include <serviceutils/PriorityDumper.h>
 #include <system/graphics.h>
 #include <ui/FenceTime.h>
@@ -174,7 +175,8 @@
                        public PriorityDumper,
                        public ClientCache::ErasedRecipient,
                        private IBinder::DeathRecipient,
-                       private HWC2::ComposerCallback {
+                       private HWC2::ComposerCallback,
+                       private Scheduler::ISchedulerCallback {
 public:
     SurfaceFlingerBE& getBE() { return mBE; }
     const SurfaceFlingerBE& getBE() const { return mBE; }
@@ -313,6 +315,8 @@
     void onLayerFirstRef(Layer*);
     void onLayerDestroyed(Layer*);
 
+    void removeFromOffscreenLayers(Layer* layer);
+
     TransactionCompletedThread& getTransactionCompletedThread() {
         return mTransactionCompletedThread;
     }
@@ -365,6 +369,8 @@
             if (colorMatrixChanged) {
                 colorMatrix = other.colorMatrix;
             }
+            globalShadowSettings = other.globalShadowSettings;
+
             return *this;
         }
 
@@ -375,10 +381,23 @@
         bool colorMatrixChanged = true;
         mat4 colorMatrix;
 
+        renderengine::ShadowSettings globalShadowSettings;
+
         void traverseInZOrder(const LayerVector::Visitor& visitor) const;
         void traverseInReverseZOrder(const LayerVector::Visitor& visitor) const;
     };
 
+    struct DesiredDisplayConfigSpecs {
+        int32_t defaultModeId;
+        float minRefreshRate;
+        float maxRefreshRate;
+
+        bool operator==(const DesiredDisplayConfigSpecs& other) const {
+            return defaultModeId == other.defaultModeId && minRefreshRate == other.minRefreshRate &&
+                    maxRefreshRate == other.maxRefreshRate;
+        }
+    };
+
     /* ------------------------------------------------------------------------
      * IBinder interface
      */
@@ -466,11 +485,17 @@
                                       const std::vector<int32_t>& allowedConfigs) override;
     status_t getAllowedDisplayConfigs(const sp<IBinder>& displayToken,
                                       std::vector<int32_t>* outAllowedConfigs) override;
+    status_t setDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken, int32_t displayModeId,
+                                          float minRefreshRate, float maxRefreshRate) override;
+    status_t getDesiredDisplayConfigSpecs(const sp<IBinder>& displayToken,
+                                          int32_t* outDefaultModeId, float* outMinRefreshRate,
+                                          float* outMaxRefreshRate) override;
     status_t getDisplayBrightnessSupport(const sp<IBinder>& displayToken,
                                          bool* outSupport) const override;
     status_t setDisplayBrightness(const sp<IBinder>& displayToken, float brightness) const override;
     status_t notifyPowerHint(int32_t hintId) override;
-
+    status_t setGlobalShadowSettings(const half4& ambientColor, const half4& spotColor,
+                                     float lightPosY, float lightPosZ, float lightRadius) override;
     /* ------------------------------------------------------------------------
      * DeathRecipient interface
      */
@@ -484,13 +509,20 @@
     /* ------------------------------------------------------------------------
      * HWC2::ComposerCallback / HWComposer::EventHandler interface
      */
-    void onVsyncReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
-                         int64_t timestamp) override;
+    void onVsyncReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId, int64_t timestamp,
+                         std::optional<hwc2_vsync_period_t> vsyncPeriod) override;
     void onHotplugReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId,
                            HWC2::Connection connection) override;
     void onRefreshReceived(int32_t sequenceId, hwc2_display_t hwcDisplayId) override;
+    void onVsyncPeriodTimingChangedReceived(
+            int32_t sequenceId, hwc2_display_t display,
+            const hwc_vsync_period_change_timeline_t& updatedTimeline) override;
 
     /* ------------------------------------------------------------------------
+     * Scheduler::ISchedulerCallback
+     */
+    void changeRefreshRate(const Scheduler::RefreshRate&, Scheduler::ConfigEvent) override;
+    /* ------------------------------------------------------------------------
      * Message handling
      */
     void waitForEvent();
@@ -500,15 +532,14 @@
     void signalLayerUpdate();
     void signalRefresh();
 
-    using RefreshRateType = scheduler::RefreshRateConfigs::RefreshRateType;
+    using RefreshRate = scheduler::RefreshRateConfigs::RefreshRate;
 
     struct ActiveConfigInfo {
-        RefreshRateType type = RefreshRateType::DEFAULT;
-        int configId = 0;
+        HwcConfigIndexType configId;
         Scheduler::ConfigEvent event = Scheduler::ConfigEvent::None;
 
         bool operator!=(const ActiveConfigInfo& other) const {
-            return type != other.type || configId != other.configId || event != other.event;
+            return configId != other.configId || event != other.event;
         }
     };
 
@@ -661,6 +692,7 @@
                                  const sp<GraphicBuffer>& buffer, bool useIdentityTransform,
                                  bool& outCapturedSecureLayers);
     const sp<DisplayDevice> getDisplayByIdOrLayerStack(uint64_t displayOrLayerStack);
+    const sp<DisplayDevice> getDisplayByLayerStack(uint64_t layerStack);
     status_t captureScreenImplLocked(const RenderArea& renderArea,
                                      TraverseLayersFunction traverseLayers,
                                      ANativeWindowBuffer* buffer, bool useIdentityTransform,
@@ -783,9 +815,10 @@
 
     // Sets the refresh rate by switching active configs, if they are available for
     // the desired refresh rate.
-    void setRefreshRateTo(RefreshRateType, Scheduler::ConfigEvent event) REQUIRES(mStateLock);
+    void changeRefreshRateLocked(const RefreshRate&, Scheduler::ConfigEvent event)
+            REQUIRES(mStateLock);
 
-    bool isDisplayConfigAllowed(int32_t configId) const REQUIRES(mStateLock);
+    bool isDisplayConfigAllowed(HwcConfigIndexType configId) const REQUIRES(mStateLock);
 
     bool previousFrameMissed(int graceTimeMs = 0);
 
@@ -1109,8 +1142,9 @@
     std::atomic<nsecs_t> mExpectedPresentTime = 0;
 
     // All configs are allowed if the set is empty.
-    using DisplayConfigs = std::set<int32_t>;
+    using DisplayConfigs = std::set<HwcConfigIndexType>;
     DisplayConfigs mAllowedDisplayConfigs GUARDED_BY(mStateLock);
+    DesiredDisplayConfigSpecs mDesiredDisplayConfigSpecs GUARDED_BY(mStateLock);
 
     std::mutex mActiveConfigLock;
     // This bit is set once we start setting the config. We read from this bit during the
diff --git a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
index 51b20cb..049c872 100644
--- a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
+++ b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
@@ -260,7 +260,7 @@
 prop {
     api_name: "color_space_agnostic_dataspace"
     type: Long
-    scope: System
+    scope: Public
     access: Readonly
     prop_name: "ro.surface_flinger.color_space_agnostic_dataspace"
 }
@@ -339,7 +339,7 @@
 prop {
     api_name: "set_display_power_timer_ms"
     type: Integer
-    scope: System
+    scope: Public
     access: Readonly
     prop_name: "ro.surface_flinger.set_display_power_timer_ms"
 }
diff --git a/services/surfaceflinger/tests/Android.bp b/services/surfaceflinger/tests/Android.bp
index d021fc2..ca7e18d 100644
--- a/services/surfaceflinger/tests/Android.bp
+++ b/services/surfaceflinger/tests/Android.bp
@@ -18,9 +18,11 @@
     test_suites: ["device-tests"],
     srcs: [
         "BufferGenerator.cpp",
+        "CommonTypes_test.cpp",
         "Credentials_test.cpp",
         "DereferenceSurfaceControl_test.cpp",
         "DisplayActiveConfig_test.cpp",
+        "DisplayConfigs_test.cpp",
         "InvalidHandles_test.cpp",
         "LayerCallback_test.cpp",
         "LayerRenderTypeTransaction_test.cpp",
@@ -41,6 +43,8 @@
         "libtrace_proto",
     ],
     shared_libs: [
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.composer@2.1",
         "libandroid",
         "libbinder",
         "libcutils",
@@ -53,6 +57,7 @@
         "libtimestats_proto",
         "libui",
         "libutils",
+        "vintf-graphics-common-ndk_platform",
     ]
 }
 
diff --git a/services/surfaceflinger/tests/CommonTypes_test.cpp b/services/surfaceflinger/tests/CommonTypes_test.cpp
new file mode 100644
index 0000000..a3e16f9
--- /dev/null
+++ b/services/surfaceflinger/tests/CommonTypes_test.cpp
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2019 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 <aidl/android/hardware/graphics/common/BlendMode.h>
+#include <aidl/android/hardware/graphics/common/Dataspace.h>
+
+#include <android/hardware/graphics/common/1.2/types.h>
+#include <android/hardware/graphics/composer/2.1/IComposerClient.h>
+
+using AidlBlendMode = aidl::android::hardware::graphics::common::BlendMode;
+using AidlDataspace = aidl::android::hardware::graphics::common::Dataspace;
+
+using HidlBlendMode = android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode;
+using HidlDataspace = android::hardware::graphics::common::V1_2::Dataspace;
+
+static_assert(static_cast<uint32_t>(AidlBlendMode::INVALID) ==
+              static_cast<uint32_t>(HidlBlendMode::INVALID));
+static_assert(static_cast<uint32_t>(AidlBlendMode::NONE) ==
+              static_cast<uint32_t>(HidlBlendMode::NONE));
+static_assert(static_cast<uint32_t>(AidlBlendMode::PREMULTIPLIED) ==
+              static_cast<uint32_t>(HidlBlendMode::PREMULTIPLIED));
+static_assert(static_cast<uint32_t>(AidlBlendMode::COVERAGE) ==
+              static_cast<uint32_t>(HidlBlendMode::COVERAGE));
+
+static_assert(static_cast<uint32_t>(AidlDataspace::UNKNOWN) ==
+              static_cast<uint32_t>(HidlDataspace::UNKNOWN));
+static_assert(static_cast<uint32_t>(AidlDataspace::ARBITRARY) ==
+              static_cast<uint32_t>(HidlDataspace::ARBITRARY));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_SHIFT) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_SHIFT));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_MASK) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_MASK));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_UNSPECIFIED) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_UNSPECIFIED));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT709) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT709));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT601_625) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT601_625));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT601_625_UNADJUSTED) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT601_625_UNADJUSTED));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT601_525) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT601_525));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT601_525_UNADJUSTED) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT601_525_UNADJUSTED));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT2020) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT2020));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT2020_CONSTANT_LUMINANCE) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT2020_CONSTANT_LUMINANCE));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_BT470M) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_BT470M));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_FILM) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_FILM));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_DCI_P3) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_DCI_P3));
+static_assert(static_cast<uint32_t>(AidlDataspace::STANDARD_ADOBE_RGB) ==
+              static_cast<uint32_t>(HidlDataspace::STANDARD_ADOBE_RGB));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_SHIFT) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_SHIFT));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_MASK) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_MASK));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_UNSPECIFIED) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_UNSPECIFIED));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_LINEAR) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_SRGB) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_SRGB));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_SMPTE_170M) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_SMPTE_170M));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_GAMMA2_2) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_GAMMA2_2));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_GAMMA2_6) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_GAMMA2_6));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_GAMMA2_8) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_GAMMA2_8));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_ST2084) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_ST2084));
+static_assert(static_cast<uint32_t>(AidlDataspace::TRANSFER_HLG) ==
+              static_cast<uint32_t>(HidlDataspace::TRANSFER_HLG));
+static_assert(static_cast<uint32_t>(AidlDataspace::RANGE_SHIFT) ==
+              static_cast<uint32_t>(HidlDataspace::RANGE_SHIFT));
+static_assert(static_cast<uint32_t>(AidlDataspace::RANGE_MASK) ==
+              static_cast<uint32_t>(HidlDataspace::RANGE_MASK));
+static_assert(static_cast<uint32_t>(AidlDataspace::RANGE_UNSPECIFIED) ==
+              static_cast<uint32_t>(HidlDataspace::RANGE_UNSPECIFIED));
+static_assert(static_cast<uint32_t>(AidlDataspace::RANGE_FULL) ==
+              static_cast<uint32_t>(HidlDataspace::RANGE_FULL));
+static_assert(static_cast<uint32_t>(AidlDataspace::RANGE_LIMITED) ==
+              static_cast<uint32_t>(HidlDataspace::RANGE_LIMITED));
+static_assert(static_cast<uint32_t>(AidlDataspace::RANGE_EXTENDED) ==
+              static_cast<uint32_t>(HidlDataspace::RANGE_EXTENDED));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_SRGB_LINEAR) ==
+              static_cast<uint32_t>(HidlDataspace::V0_SRGB_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_SCRGB_LINEAR) ==
+              static_cast<uint32_t>(HidlDataspace::V0_SCRGB_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_SRGB) ==
+              static_cast<uint32_t>(HidlDataspace::V0_SRGB));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_SCRGB) ==
+              static_cast<uint32_t>(HidlDataspace::V0_SCRGB));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_JFIF) ==
+              static_cast<uint32_t>(HidlDataspace::V0_JFIF));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_BT601_625) ==
+              static_cast<uint32_t>(HidlDataspace::V0_BT601_625));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_BT601_525) ==
+              static_cast<uint32_t>(HidlDataspace::V0_BT601_525));
+static_assert(static_cast<uint32_t>(AidlDataspace::V0_BT709) ==
+              static_cast<uint32_t>(HidlDataspace::V0_BT709));
+static_assert(static_cast<uint32_t>(AidlDataspace::DCI_P3_LINEAR) ==
+              static_cast<uint32_t>(HidlDataspace::DCI_P3_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::DCI_P3) ==
+              static_cast<uint32_t>(HidlDataspace::DCI_P3));
+static_assert(static_cast<uint32_t>(AidlDataspace::DISPLAY_P3_LINEAR) ==
+              static_cast<uint32_t>(HidlDataspace::DISPLAY_P3_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::DISPLAY_P3) ==
+              static_cast<uint32_t>(HidlDataspace::DISPLAY_P3));
+static_assert(static_cast<uint32_t>(AidlDataspace::ADOBE_RGB) ==
+              static_cast<uint32_t>(HidlDataspace::ADOBE_RGB));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020_LINEAR) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020_PQ) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020_PQ));
+static_assert(static_cast<uint32_t>(AidlDataspace::DEPTH) ==
+              static_cast<uint32_t>(HidlDataspace::DEPTH));
+static_assert(static_cast<uint32_t>(AidlDataspace::SENSOR) ==
+              static_cast<uint32_t>(HidlDataspace::SENSOR));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020_ITU) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020_ITU));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020_ITU_PQ) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020_ITU_PQ));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020_ITU_HLG) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020_ITU_HLG));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT2020_HLG) ==
+              static_cast<uint32_t>(HidlDataspace::BT2020_HLG));
+static_assert(static_cast<uint32_t>(AidlDataspace::DISPLAY_BT2020) ==
+              static_cast<uint32_t>(HidlDataspace::DISPLAY_BT2020));
+static_assert(static_cast<uint32_t>(AidlDataspace::DYNAMIC_DEPTH) ==
+              static_cast<uint32_t>(HidlDataspace::DYNAMIC_DEPTH));
+static_assert(static_cast<uint32_t>(AidlDataspace::JPEG_APP_SEGMENTS) ==
+              static_cast<uint32_t>(HidlDataspace::JPEG_APP_SEGMENTS));
+static_assert(static_cast<uint32_t>(AidlDataspace::HEIF) ==
+              static_cast<uint32_t>(HidlDataspace::HEIF));
+
+// Below are the dataspaces that have been deprecated for sometime. They are required to behave
+// the same as their V0_* counterparts. We redefined them in AIDL to be the same as the
+// their V0_* counterparts.
+static_assert(static_cast<uint32_t>(AidlDataspace::SRGB_LINEAR) ==
+              static_cast<uint32_t>(AidlDataspace::V0_SRGB_LINEAR));
+static_assert(static_cast<uint32_t>(AidlDataspace::SRGB) ==
+              static_cast<uint32_t>(AidlDataspace::V0_SRGB));
+static_assert(static_cast<uint32_t>(AidlDataspace::JFIF) ==
+              static_cast<uint32_t>(AidlDataspace::V0_JFIF));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT601_625) ==
+              static_cast<uint32_t>(AidlDataspace::V0_BT601_625));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT601_525) ==
+              static_cast<uint32_t>(AidlDataspace::V0_BT601_525));
+static_assert(static_cast<uint32_t>(AidlDataspace::BT709) ==
+              static_cast<uint32_t>(AidlDataspace::V0_BT709));
diff --git a/services/surfaceflinger/tests/Credentials_test.cpp b/services/surfaceflinger/tests/Credentials_test.cpp
index b667a74..b1bb7fd 100644
--- a/services/surfaceflinger/tests/Credentials_test.cpp
+++ b/services/surfaceflinger/tests/Credentials_test.cpp
@@ -274,7 +274,7 @@
         sp<GraphicBuffer> outBuffer;
         return ScreenshotClient::captureLayers(mBGSurfaceControl->getHandle(),
                                                ui::Dataspace::V0_SRGB, ui::PixelFormat::RGBA_8888,
-                                               Rect(), FRAME_SCALE, &outBuffer);
+                                               Rect(0, 0, 1, 1), FRAME_SCALE, &outBuffer);
     };
     ASSERT_NO_FATAL_FAILURE(checkWithPrivileges<status_t>(condition, NO_ERROR, PERMISSION_DENIED));
 }
diff --git a/services/surfaceflinger/tests/DisplayConfigs_test.cpp b/services/surfaceflinger/tests/DisplayConfigs_test.cpp
new file mode 100644
index 0000000..420fb29
--- /dev/null
+++ b/services/surfaceflinger/tests/DisplayConfigs_test.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 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 <thread>
+#include "LayerTransactionTest.h"
+namespace android {
+
+using android::hardware::graphics::common::V1_1::BufferUsage;
+
+::testing::Environment* const binderEnv =
+        ::testing::AddGlobalTestEnvironment(new BinderEnvironment());
+
+/**
+ * Test class for setting display configs and passing around refresh rate ranges.
+ */
+class RefreshRateRangeTest : public ::testing::Test {
+protected:
+    void SetUp() override { mDisplayToken = SurfaceComposerClient::getInternalDisplayToken(); }
+
+    sp<IBinder> mDisplayToken;
+    int32_t defaultConfigId;
+    float minRefreshRate;
+    float maxRefreshRate;
+};
+
+TEST_F(RefreshRateRangeTest, simpleSetAndGet) {
+    status_t res = SurfaceComposerClient::setDesiredDisplayConfigSpecs(mDisplayToken, 1, 45, 75);
+    EXPECT_EQ(res, NO_ERROR);
+
+    res = SurfaceComposerClient::getDesiredDisplayConfigSpecs(mDisplayToken, &defaultConfigId,
+                                                              &minRefreshRate, &maxRefreshRate);
+    EXPECT_EQ(res, NO_ERROR);
+    EXPECT_EQ(defaultConfigId, 1);
+    EXPECT_EQ(minRefreshRate, 45);
+    EXPECT_EQ(maxRefreshRate, 75);
+}
+
+TEST_F(RefreshRateRangeTest, complexSetAndGet) {
+    status_t res = SurfaceComposerClient::setDesiredDisplayConfigSpecs(mDisplayToken, 1, 45, 75);
+    EXPECT_EQ(res, NO_ERROR);
+
+    res = SurfaceComposerClient::getDesiredDisplayConfigSpecs(mDisplayToken, &defaultConfigId,
+                                                              &minRefreshRate, &maxRefreshRate);
+    EXPECT_EQ(res, NO_ERROR);
+    EXPECT_EQ(defaultConfigId, 1);
+    EXPECT_EQ(minRefreshRate, 45);
+    EXPECT_EQ(maxRefreshRate, 75);
+
+    // Second call overrides the first one.
+    res = SurfaceComposerClient::setDesiredDisplayConfigSpecs(mDisplayToken, 10, 145, 875);
+    EXPECT_EQ(res, NO_ERROR);
+    res = SurfaceComposerClient::getDesiredDisplayConfigSpecs(mDisplayToken, &defaultConfigId,
+                                                              &minRefreshRate, &maxRefreshRate);
+    EXPECT_EQ(res, NO_ERROR);
+    EXPECT_EQ(defaultConfigId, 10);
+    EXPECT_EQ(minRefreshRate, 145);
+    EXPECT_EQ(maxRefreshRate, 875);
+}
+} // namespace android
diff --git a/services/surfaceflinger/tests/LayerUpdate_test.cpp b/services/surfaceflinger/tests/LayerUpdate_test.cpp
index 73f563d..0ad122b 100644
--- a/services/surfaceflinger/tests/LayerUpdate_test.cpp
+++ b/services/surfaceflinger/tests/LayerUpdate_test.cpp
@@ -1443,6 +1443,61 @@
     mCapture->expectColor(Rect(0, 0, 9, 9), {100, 100, 100, 255});
 }
 
+TEST_F(ScreenCaptureTest, CaptureBoundlessLayerWithSourceCrop) {
+    sp<SurfaceControl> child = createColorLayer("Child layer", Color::RED, mFGSurfaceControl.get());
+    SurfaceComposerClient::Transaction().show(child).apply(true);
+
+    sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+    sp<GraphicBuffer> outBuffer;
+    Rect sourceCrop(0, 0, 10, 10);
+    ASSERT_EQ(NO_ERROR, sf->captureLayers(child->getHandle(), &outBuffer, sourceCrop));
+    ScreenCapture sc(outBuffer);
+
+    sc.expectColor(Rect(0, 0, 9, 9), Color::RED);
+}
+
+TEST_F(ScreenCaptureTest, CaptureBoundedLayerWithoutSourceCrop) {
+    sp<SurfaceControl> child = createColorLayer("Child layer", Color::RED, mFGSurfaceControl.get());
+    Rect layerCrop(0, 0, 10, 10);
+    SurfaceComposerClient::Transaction().setCrop_legacy(child, layerCrop).show(child).apply(true);
+
+    sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+    sp<GraphicBuffer> outBuffer;
+    Rect sourceCrop = Rect();
+    ASSERT_EQ(NO_ERROR, sf->captureLayers(child->getHandle(), &outBuffer, sourceCrop));
+    ScreenCapture sc(outBuffer);
+
+    sc.expectColor(Rect(0, 0, 9, 9), Color::RED);
+}
+
+TEST_F(ScreenCaptureTest, CaptureBoundlessLayerWithoutSourceCropFails) {
+    sp<SurfaceControl> child = createColorLayer("Child layer", Color::RED, mFGSurfaceControl.get());
+    SurfaceComposerClient::Transaction().show(child).apply(true);
+
+    sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+    sp<GraphicBuffer> outBuffer;
+    Rect sourceCrop = Rect();
+
+    ASSERT_EQ(BAD_VALUE, sf->captureLayers(child->getHandle(), &outBuffer, sourceCrop));
+}
+
+TEST_F(ScreenCaptureTest, CaptureBufferLayerWithoutBufferFails) {
+    sp<SurfaceControl> child = createSurface(mClient, "Child surface", 10, 10,
+                                             PIXEL_FORMAT_RGBA_8888, 0, mFGSurfaceControl.get());
+    SurfaceComposerClient::Transaction().show(child).apply(true);
+
+    sp<ISurfaceComposer> sf(ComposerService::getComposerService());
+    sp<GraphicBuffer> outBuffer;
+    Rect sourceCrop = Rect();
+    ASSERT_EQ(BAD_VALUE, sf->captureLayers(child->getHandle(), &outBuffer, sourceCrop));
+
+    TransactionUtils::fillSurfaceRGBA8(child, Color::RED);
+    SurfaceComposerClient::Transaction().apply(true);
+    ASSERT_EQ(NO_ERROR, sf->captureLayers(child->getHandle(), &outBuffer, sourceCrop));
+    ScreenCapture sc(outBuffer);
+    sc.expectColor(Rect(0, 0, 9, 9), Color::RED);
+}
+
 // In the following tests we verify successful skipping of a parent layer,
 // so we use the same verification logic and only change how we mutate
 // the parent layer to verify that various properties are ignored.
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index c6c3d29..ccfa6c5 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -56,6 +56,8 @@
         "StrongTypingTest.cpp",
         "VSyncDispatchTimerQueueTest.cpp",
         "VSyncDispatchRealtimeTest.cpp",
+        "VSyncPredictorTest.cpp",
+        "VSyncReactorTest.cpp",
         "mock/DisplayHardware/MockComposer.cpp",
         "mock/DisplayHardware/MockDisplay.cpp",
         "mock/DisplayHardware/MockPowerAdvisor.cpp",
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index b1a4951..76e8171 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -469,6 +469,10 @@
                     getDisplayAttribute(HWC_DISPLAY_ID, HWC_ACTIVE_CONFIG_ID,
                                         IComposerClient::Attribute::DPI_Y, _))
                 .WillOnce(DoAll(SetArgPointee<3>(DEFAULT_DPI), Return(Error::NONE)));
+        EXPECT_CALL(*test->mComposer,
+                    getDisplayAttribute(HWC_DISPLAY_ID, HWC_ACTIVE_CONFIG_ID,
+                                        IComposerClient::Attribute::CONFIG_GROUP, _))
+                .WillOnce(DoAll(SetArgPointee<3>(-1), Return(Error::NONE)));
 
         if (PhysicalDisplay::HAS_IDENTIFICATION_DATA) {
             EXPECT_CALL(*test->mComposer, getDisplayIdentificationData(HWC_DISPLAY_ID, _, _))
@@ -1423,7 +1427,7 @@
     // Note: This is not Case::Display::HWC_ACTIVE_CONFIG_ID as the ids are
     // remapped, and the test only ever sets up one config. If there were an error
     // looking up the remapped index, device->getActiveConfig() would be -1 instead.
-    EXPECT_EQ(0, device->getActiveConfig());
+    EXPECT_EQ(0, device->getActiveConfig().value());
     EXPECT_EQ(Case::PerFrameMetadataSupport::PER_FRAME_METADATA_KEYS,
               device->getSupportedPerFrameMetadata());
 }
diff --git a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
index 2662f52..80bca02 100644
--- a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
+++ b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
@@ -26,6 +26,7 @@
 
 #include "AsyncCallRecorder.h"
 #include "Scheduler/EventThread.h"
+#include "Scheduler/HwcStrongTypes.h"
 
 using namespace std::chrono_literals;
 using namespace std::placeholders;
@@ -34,6 +35,7 @@
 using testing::Invoke;
 
 namespace android {
+
 namespace {
 
 constexpr PhysicalDisplayId INTERNAL_DISPLAY_ID = 111;
@@ -448,17 +450,17 @@
 }
 
 TEST_F(EventThreadTest, postConfigChangedPrimary) {
-    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, 7);
+    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, HwcConfigIndexType(7));
     expectConfigChangedEventReceivedByConnection(INTERNAL_DISPLAY_ID, 7);
 }
 
 TEST_F(EventThreadTest, postConfigChangedExternal) {
-    mThread->onConfigChanged(EXTERNAL_DISPLAY_ID, 5);
+    mThread->onConfigChanged(EXTERNAL_DISPLAY_ID, HwcConfigIndexType(5));
     expectConfigChangedEventReceivedByConnection(EXTERNAL_DISPLAY_ID, 5);
 }
 
 TEST_F(EventThreadTest, postConfigChangedPrimary64bit) {
-    mThread->onConfigChanged(DISPLAY_ID_64BIT, 7);
+    mThread->onConfigChanged(DISPLAY_ID_64BIT, HwcConfigIndexType(7));
     expectConfigChangedEventReceivedByConnection(DISPLAY_ID_64BIT, 7);
 }
 
@@ -468,7 +470,7 @@
             createConnection(suppressConnectionEventRecorder,
                              ISurfaceComposer::eConfigChangedSuppress);
 
-    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, 9);
+    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, HwcConfigIndexType(9));
     expectConfigChangedEventReceivedByConnection(INTERNAL_DISPLAY_ID, 9);
 
     auto args = suppressConnectionEventRecorder.waitForCall();
diff --git a/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h b/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
index 66c7f6b..da4eea0 100644
--- a/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
+++ b/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
@@ -25,16 +25,16 @@
 struct FakePhaseOffsets : PhaseOffsets {
     static constexpr nsecs_t FAKE_PHASE_OFFSET_NS = 0;
 
-    Offsets getOffsetsForRefreshRate(RefreshRateType) const override { return getCurrentOffsets(); }
+    Offsets getOffsetsForRefreshRate(float) const override { return getCurrentOffsets(); }
 
     Offsets getCurrentOffsets() const override {
-        return {{RefreshRateType::DEFAULT, FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
-                {RefreshRateType::DEFAULT, FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
-                {RefreshRateType::DEFAULT, FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
+        return {{FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
+                {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
+                {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
                 FAKE_PHASE_OFFSET_NS};
     }
 
-    void setRefreshRateType(RefreshRateType) override {}
+    void setRefreshRateFps(float) override {}
     void dump(std::string&) const override {}
 };
 
diff --git a/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp b/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
index e93d31e..d95252b 100644
--- a/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerHistoryTest.cpp
@@ -44,9 +44,15 @@
     auto createLayer() { return sp<mock::MockLayer>(new mock::MockLayer(mFlinger.flinger())); }
 
     RefreshRateConfigs mConfigs{true,
-                                {RefreshRateConfigs::InputConfig{0, LO_FPS_PERIOD},
-                                 RefreshRateConfigs::InputConfig{1, HI_FPS_PERIOD}},
-                                0};
+                                {
+                                        RefreshRateConfigs::InputConfig{HwcConfigIndexType(0),
+                                                                        HwcConfigGroupType(0),
+                                                                        LO_FPS_PERIOD},
+                                        RefreshRateConfigs::InputConfig{HwcConfigIndexType(1),
+                                                                        HwcConfigGroupType(0),
+                                                                        HI_FPS_PERIOD},
+                                },
+                                HwcConfigIndexType(0)};
     TestableScheduler* const mScheduler{new TestableScheduler(mConfigs)};
     TestableSurfaceFlinger mFlinger;
 
@@ -57,7 +63,6 @@
 
 TEST_F(LayerHistoryTest, oneLayer) {
     const auto layer = createLayer();
-    constexpr bool isHDR = false;
     EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(true));
 
     EXPECT_EQ(1, layerCount());
@@ -69,14 +74,14 @@
 
     // 0 FPS is returned if active layers have insufficient history.
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE - 1; i++) {
-        history().record(layer.get(), 0, isHDR, mTime);
+        history().record(layer.get(), 0, mTime);
         EXPECT_FLOAT_EQ(0, history().summarize(mTime).maxRefreshRate);
         EXPECT_EQ(1, activeLayerCount());
     }
 
     // High FPS is returned once enough history has been recorded.
     for (int i = 0; i < 10; i++) {
-        history().record(layer.get(), 0, isHDR, mTime);
+        history().record(layer.get(), 0, mTime);
         EXPECT_FLOAT_EQ(HI_FPS, history().summarize(mTime).maxRefreshRate);
         EXPECT_EQ(1, activeLayerCount());
     }
@@ -84,29 +89,25 @@
 
 TEST_F(LayerHistoryTest, oneHDRLayer) {
     const auto layer = createLayer();
-    constexpr bool isHDR = true;
     EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(true));
 
     EXPECT_EQ(1, layerCount());
     EXPECT_EQ(0, activeLayerCount());
 
-    history().record(layer.get(), 0, isHDR, mTime);
+    history().record(layer.get(), 0, mTime);
     auto summary = history().summarize(mTime);
     EXPECT_FLOAT_EQ(0, summary.maxRefreshRate);
-    EXPECT_TRUE(summary.isHDR);
     EXPECT_EQ(1, activeLayerCount());
 
     EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(false));
 
     summary = history().summarize(mTime);
     EXPECT_FLOAT_EQ(0, summary.maxRefreshRate);
-    EXPECT_FALSE(summary.isHDR);
     EXPECT_EQ(0, activeLayerCount());
 }
 
 TEST_F(LayerHistoryTest, explicitTimestamp) {
     const auto layer = createLayer();
-    constexpr bool isHDR = false;
     EXPECT_CALL(*layer, isVisible()).WillRepeatedly(Return(true));
 
     EXPECT_EQ(1, layerCount());
@@ -114,7 +115,7 @@
 
     nsecs_t time = mTime;
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE; i++) {
-        history().record(layer.get(), time, isHDR, time);
+        history().record(layer.get(), time, time);
         time += LO_FPS_PERIOD;
     }
 
@@ -127,7 +128,6 @@
     auto layer1 = createLayer();
     auto layer2 = createLayer();
     auto layer3 = createLayer();
-    constexpr bool isHDR = false;
 
     EXPECT_CALL(*layer1, isVisible()).WillRepeatedly(Return(true));
     EXPECT_CALL(*layer2, isVisible()).WillRepeatedly(Return(true));
@@ -141,7 +141,7 @@
 
     // layer1 is active but infrequent.
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE; i++) {
-        history().record(layer1.get(), time, isHDR, time);
+        history().record(layer1.get(), time, time);
         time += MAX_FREQUENT_LAYER_PERIOD_NS.count();
     }
 
@@ -151,12 +151,12 @@
 
     // layer2 is frequent and has high refresh rate.
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE; i++) {
-        history().record(layer2.get(), time, isHDR, time);
+        history().record(layer2.get(), time, time);
         time += HI_FPS_PERIOD;
     }
 
     // layer1 is still active but infrequent.
-    history().record(layer1.get(), time, isHDR, time);
+    history().record(layer1.get(), time, time);
 
     EXPECT_FLOAT_EQ(HI_FPS, history().summarize(time).maxRefreshRate);
     EXPECT_EQ(2, activeLayerCount());
@@ -165,7 +165,7 @@
     // layer1 is no longer active.
     // layer2 is frequent and has low refresh rate.
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE; i++) {
-        history().record(layer2.get(), time, isHDR, time);
+        history().record(layer2.get(), time, time);
         time += LO_FPS_PERIOD;
     }
 
@@ -178,10 +178,10 @@
     constexpr int RATIO = LO_FPS_PERIOD / HI_FPS_PERIOD;
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE - 1; i++) {
         if (i % RATIO == 0) {
-            history().record(layer2.get(), time, isHDR, time);
+            history().record(layer2.get(), time, time);
         }
 
-        history().record(layer3.get(), time, isHDR, time);
+        history().record(layer3.get(), time, time);
         time += HI_FPS_PERIOD;
     }
 
@@ -190,7 +190,7 @@
     EXPECT_EQ(2, frequentLayerCount(time));
 
     // layer3 becomes recently active.
-    history().record(layer3.get(), time, isHDR, time);
+    history().record(layer3.get(), time, time);
     EXPECT_FLOAT_EQ(HI_FPS, history().summarize(time).maxRefreshRate);
     EXPECT_EQ(2, activeLayerCount());
     EXPECT_EQ(2, frequentLayerCount(time));
@@ -205,7 +205,7 @@
     // layer2 still has low refresh rate.
     // layer3 becomes inactive.
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE; i++) {
-        history().record(layer2.get(), time, isHDR, time);
+        history().record(layer2.get(), time, time);
         time += LO_FPS_PERIOD;
     }
 
@@ -222,7 +222,7 @@
 
     // layer3 becomes active and has high refresh rate.
     for (int i = 0; i < PRESENT_TIME_HISTORY_SIZE; i++) {
-        history().record(layer3.get(), time, isHDR, time);
+        history().record(layer3.get(), time, time);
         time += HI_FPS_PERIOD;
     }
 
diff --git a/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp b/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
index f315a8a..546e65c 100644
--- a/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
+++ b/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
@@ -30,27 +30,19 @@
 namespace android {
 namespace scheduler {
 
-using RefreshRateType = RefreshRateConfigs::RefreshRateType;
 using RefreshRate = RefreshRateConfigs::RefreshRate;
 
 class RefreshRateConfigsTest : public testing::Test {
 protected:
-    static constexpr int CONFIG_ID_60 = 0;
-    static constexpr hwc2_config_t HWC2_CONFIG_ID_60 = 0;
-    static constexpr int CONFIG_ID_90 = 1;
-    static constexpr hwc2_config_t HWC2_CONFIG_ID_90 = 1;
+    static inline const HwcConfigIndexType HWC_CONFIG_ID_60 = HwcConfigIndexType(0);
+    static inline const HwcConfigIndexType HWC_CONFIG_ID_90 = HwcConfigIndexType(1);
+    static inline const HwcConfigGroupType HWC_GROUP_ID_0 = HwcConfigGroupType(0);
+    static inline const HwcConfigGroupType HWC_GROUP_ID_1 = HwcConfigGroupType(1);
     static constexpr int64_t VSYNC_60 = 16666667;
     static constexpr int64_t VSYNC_90 = 11111111;
 
     RefreshRateConfigsTest();
     ~RefreshRateConfigsTest();
-
-    void assertRatesEqual(const RefreshRate& left, const RefreshRate& right) {
-        ASSERT_EQ(left.configId, right.configId);
-        ASSERT_EQ(left.name, right.name);
-        ASSERT_EQ(left.fps, right.fps);
-        ASSERT_EQ(left.vsyncPeriod, right.vsyncPeriod);
-    }
 };
 
 RefreshRateConfigsTest::RefreshRateConfigsTest() {
@@ -69,40 +61,173 @@
 /* ------------------------------------------------------------------------
  * Test cases
  */
-TEST_F(RefreshRateConfigsTest, oneDeviceConfig_isRejected) {
-    std::vector<RefreshRateConfigs::InputConfig> configs{{HWC2_CONFIG_ID_60, VSYNC_60}};
+TEST_F(RefreshRateConfigsTest, oneDeviceConfig_SwitchingSupported) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60}}};
     auto refreshRateConfigs =
             std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
-                                                 /*currentConfig=*/0);
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+}
+
+TEST_F(RefreshRateConfigsTest, oneDeviceConfig_SwitchingNotSupported) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60}}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/false, configs,
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
     ASSERT_FALSE(refreshRateConfigs->refreshRateSwitchingSupported());
 }
 
 TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_storesFullRefreshRateMap) {
-    std::vector<RefreshRateConfigs::InputConfig> configs{{HWC2_CONFIG_ID_60, VSYNC_60},
-                                                         {HWC2_CONFIG_ID_90, VSYNC_90}};
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60},
+             {HWC_CONFIG_ID_90, HWC_GROUP_ID_0, VSYNC_90}}};
     auto refreshRateConfigs =
             std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
-                                                 /*currentConfig=*/0);
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
 
     ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
-    const auto& rates = refreshRateConfigs->getRefreshRateMap();
-    ASSERT_EQ(2, rates.size());
-    const auto& defaultRate = rates.find(RefreshRateType::DEFAULT);
-    const auto& performanceRate = rates.find(RefreshRateType::PERFORMANCE);
-    ASSERT_NE(rates.end(), defaultRate);
-    ASSERT_NE(rates.end(), performanceRate);
 
-    RefreshRate expectedDefaultConfig = {CONFIG_ID_60, "60fps", 60, VSYNC_60, HWC2_CONFIG_ID_60};
-    assertRatesEqual(expectedDefaultConfig, defaultRate->second);
-    RefreshRate expectedPerformanceConfig = {CONFIG_ID_90, "90fps", 90, VSYNC_90,
-                                             HWC2_CONFIG_ID_90};
-    assertRatesEqual(expectedPerformanceConfig, performanceRate->second);
+    const auto minRate = refreshRateConfigs->getMinRefreshRate();
+    const auto performanceRate = refreshRateConfigs->getMaxRefreshRate();
 
-    assertRatesEqual(expectedDefaultConfig,
-                     refreshRateConfigs->getRefreshRateFromType(RefreshRateType::DEFAULT));
-    assertRatesEqual(expectedPerformanceConfig,
-                     refreshRateConfigs->getRefreshRateFromType(RefreshRateType::PERFORMANCE));
+    RefreshRate expectedDefaultConfig = {HWC_CONFIG_ID_60, VSYNC_60, HWC_GROUP_ID_0, "60fps", 60};
+    ASSERT_EQ(expectedDefaultConfig, minRate);
+    RefreshRate expectedPerformanceConfig = {HWC_CONFIG_ID_90, VSYNC_90, HWC_GROUP_ID_0, "90fps",
+                                             90};
+    ASSERT_EQ(expectedPerformanceConfig, performanceRate);
+
+    const auto minRateByPolicy = refreshRateConfigs->getMinRefreshRateByPolicy();
+    const auto performanceRateByPolicy = refreshRateConfigs->getMaxRefreshRateByPolicy();
+    ASSERT_EQ(minRateByPolicy, minRate);
+    ASSERT_EQ(performanceRateByPolicy, performanceRate);
 }
+
+TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_storesFullRefreshRateMap_differentGroups) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60},
+             {HWC_CONFIG_ID_90, HWC_GROUP_ID_1, VSYNC_90}}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
+
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+    const auto minRate = refreshRateConfigs->getMinRefreshRateByPolicy();
+    const auto performanceRate = refreshRateConfigs->getMaxRefreshRate();
+    const auto minRate60 = refreshRateConfigs->getMinRefreshRateByPolicy();
+    const auto performanceRate60 = refreshRateConfigs->getMaxRefreshRateByPolicy();
+
+    RefreshRate expectedDefaultConfig = {HWC_CONFIG_ID_60, VSYNC_60, HWC_GROUP_ID_0, "60fps", 60};
+    ASSERT_EQ(expectedDefaultConfig, minRate);
+    ASSERT_EQ(expectedDefaultConfig, minRate60);
+    ASSERT_EQ(expectedDefaultConfig, performanceRate60);
+
+    refreshRateConfigs->setPolicy(HWC_CONFIG_ID_90, 60, 90);
+    refreshRateConfigs->setCurrentConfigId(HWC_CONFIG_ID_90);
+
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+    const auto minRate90 = refreshRateConfigs->getMinRefreshRateByPolicy();
+    const auto performanceRate90 = refreshRateConfigs->getMaxRefreshRateByPolicy();
+
+    RefreshRate expectedPerformanceConfig = {HWC_CONFIG_ID_90, VSYNC_90, HWC_GROUP_ID_1, "90fps",
+                                             90};
+    ASSERT_EQ(expectedPerformanceConfig, performanceRate);
+    ASSERT_EQ(expectedPerformanceConfig, minRate90);
+    ASSERT_EQ(expectedPerformanceConfig, performanceRate90);
+}
+
+TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_policyChange) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60},
+             {HWC_CONFIG_ID_90, HWC_GROUP_ID_0, VSYNC_90}}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+    auto minRate = refreshRateConfigs->getMinRefreshRateByPolicy();
+    auto performanceRate = refreshRateConfigs->getMaxRefreshRateByPolicy();
+
+    RefreshRate expectedDefaultConfig = {HWC_CONFIG_ID_60, VSYNC_60, HWC_GROUP_ID_0, "60fps", 60};
+    ASSERT_EQ(expectedDefaultConfig, minRate);
+    RefreshRate expectedPerformanceConfig = {HWC_CONFIG_ID_90, VSYNC_90, HWC_GROUP_ID_0, "90fps",
+                                             90};
+    ASSERT_EQ(expectedPerformanceConfig, performanceRate);
+
+    refreshRateConfigs->setPolicy(HWC_CONFIG_ID_60, 60, 60);
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+
+    auto minRate60 = refreshRateConfigs->getMinRefreshRateByPolicy();
+    auto performanceRate60 = refreshRateConfigs->getMaxRefreshRateByPolicy();
+    ASSERT_EQ(expectedDefaultConfig, minRate60);
+    ASSERT_EQ(expectedDefaultConfig, performanceRate60);
+}
+
+TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_getCurrentRefreshRate) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60},
+             {HWC_CONFIG_ID_90, HWC_GROUP_ID_0, VSYNC_90}}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
+    {
+        auto current = refreshRateConfigs->getCurrentRefreshRate();
+        EXPECT_EQ(current.configId, HWC_CONFIG_ID_60);
+    }
+
+    refreshRateConfigs->setCurrentConfigId(HWC_CONFIG_ID_90);
+    {
+        auto current = refreshRateConfigs->getCurrentRefreshRate();
+        EXPECT_EQ(current.configId, HWC_CONFIG_ID_90);
+    }
+
+    refreshRateConfigs->setPolicy(HWC_CONFIG_ID_60, 90, 90);
+    {
+        auto current = refreshRateConfigs->getCurrentRefreshRate();
+        EXPECT_EQ(current.configId, HWC_CONFIG_ID_90);
+    }
+}
+
+TEST_F(RefreshRateConfigsTest, twoDeviceConfigs_getRefreshRateForContent) {
+    std::vector<RefreshRateConfigs::InputConfig> configs{
+            {{HWC_CONFIG_ID_60, HWC_GROUP_ID_0, VSYNC_60},
+             {HWC_CONFIG_ID_90, HWC_GROUP_ID_0, VSYNC_90}}};
+    auto refreshRateConfigs =
+            std::make_unique<RefreshRateConfigs>(/*refreshRateSwitching=*/true, configs,
+                                                 /*currentConfigId=*/HWC_CONFIG_ID_60);
+
+    ASSERT_TRUE(refreshRateConfigs->refreshRateSwitchingSupported());
+
+    RefreshRate expected60Config = {HWC_CONFIG_ID_60, VSYNC_60, HWC_GROUP_ID_0, "60fps", 60};
+    RefreshRate expected90Config = {HWC_CONFIG_ID_90, VSYNC_90, HWC_GROUP_ID_0, "90fps", 90};
+
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(90.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(60.0f));
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(45.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(30.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(24.0f));
+
+    refreshRateConfigs->setPolicy(HWC_CONFIG_ID_60, 60, 60);
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(90.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(60.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(45.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(30.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(24.0f));
+
+    refreshRateConfigs->setPolicy(HWC_CONFIG_ID_60, 90, 90);
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(90.0f));
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(60.0f));
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(45.0f));
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(30.0f));
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(24.0f));
+    refreshRateConfigs->setPolicy(HWC_CONFIG_ID_60, 0, 120);
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(90.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(60.0f));
+    ASSERT_EQ(expected90Config, refreshRateConfigs->getRefreshRateForContent(45.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(30.0f));
+    ASSERT_EQ(expected60Config, refreshRateConfigs->getRefreshRateForContent(24.0f));
+}
+
 } // namespace
 } // namespace scheduler
 } // namespace android
diff --git a/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp b/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp
index cec0b32..ef4699f 100644
--- a/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp
+++ b/services/surfaceflinger/tests/unittests/RefreshRateStatsTest.cpp
@@ -33,8 +33,9 @@
 
 class RefreshRateStatsTest : public testing::Test {
 protected:
-    static constexpr int CONFIG_ID_90 = 0;
-    static constexpr int CONFIG_ID_60 = 1;
+    static inline const auto CONFIG_ID_0 = HwcConfigIndexType(0);
+    static inline const auto CONFIG_ID_1 = HwcConfigIndexType(1);
+    static inline const auto CONFIG_GROUP_0 = HwcConfigGroupType(0);
     static constexpr int64_t VSYNC_90 = 11111111;
     static constexpr int64_t VSYNC_60 = 16666667;
 
@@ -43,10 +44,10 @@
 
     void init(const std::vector<RefreshRateConfigs::InputConfig>& configs) {
         mRefreshRateConfigs = std::make_unique<RefreshRateConfigs>(
-                /*refreshRateSwitching=*/true, configs, /*currentConfig=*/0);
+                /*refreshRateSwitching=*/true, configs, /*currentConfig=*/CONFIG_ID_0);
         mRefreshRateStats =
                 std::make_unique<RefreshRateStats>(*mRefreshRateConfigs, mTimeStats,
-                                                   /*currentConfig=*/0,
+                                                   /*currentConfigId=*/CONFIG_ID_0,
                                                    /*currentPowerMode=*/HWC_POWER_MODE_OFF);
     }
 
@@ -72,7 +73,7 @@
  * Test cases
  */
 TEST_F(RefreshRateStatsTest, oneConfigTest) {
-    init({{CONFIG_ID_90, VSYNC_90}});
+    init({{{CONFIG_ID_0, CONFIG_GROUP_0, VSYNC_90}}});
 
     EXPECT_CALL(mTimeStats, recordRefreshRate(0, _)).Times(AtLeast(1));
     EXPECT_CALL(mTimeStats, recordRefreshRate(90, _)).Times(AtLeast(1));
@@ -91,7 +92,7 @@
     EXPECT_LT(screenOff, times["ScreenOff"]);
     EXPECT_EQ(0u, times.count("90fps"));
 
-    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_0);
     mRefreshRateStats->setPowerMode(HWC_POWER_MODE_NORMAL);
     screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
@@ -107,7 +108,7 @@
     EXPECT_LT(screenOff, times["ScreenOff"]);
     EXPECT_EQ(ninety, times["90fps"]);
 
-    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_0);
     screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
     times = mRefreshRateStats->getTotalTimes();
@@ -118,7 +119,7 @@
 }
 
 TEST_F(RefreshRateStatsTest, twoConfigsTest) {
-    init({{CONFIG_ID_90, VSYNC_90}, {CONFIG_ID_60, VSYNC_60}});
+    init({{{CONFIG_ID_0, CONFIG_GROUP_0, VSYNC_90}, {CONFIG_ID_1, CONFIG_GROUP_0, VSYNC_60}}});
 
     EXPECT_CALL(mTimeStats, recordRefreshRate(0, _)).Times(AtLeast(1));
     EXPECT_CALL(mTimeStats, recordRefreshRate(60, _)).Times(AtLeast(1));
@@ -137,7 +138,7 @@
     times = mRefreshRateStats->getTotalTimes();
     EXPECT_LT(screenOff, times["ScreenOff"]);
 
-    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_0);
     mRefreshRateStats->setPowerMode(HWC_POWER_MODE_NORMAL);
     screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
@@ -147,7 +148,7 @@
     EXPECT_LT(0, times["90fps"]);
 
     // When power mode is normal, time for configs updates.
-    mRefreshRateStats->setConfigMode(CONFIG_ID_60);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_1);
     int ninety = mRefreshRateStats->getTotalTimes()["90fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
     times = mRefreshRateStats->getTotalTimes();
@@ -156,7 +157,7 @@
     ASSERT_EQ(1u, times.count("60fps"));
     EXPECT_LT(0, times["60fps"]);
 
-    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_0);
     int sixty = mRefreshRateStats->getTotalTimes()["60fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
     times = mRefreshRateStats->getTotalTimes();
@@ -164,7 +165,7 @@
     EXPECT_LT(ninety, times["90fps"]);
     EXPECT_EQ(sixty, times["60fps"]);
 
-    mRefreshRateStats->setConfigMode(CONFIG_ID_60);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_1);
     ninety = mRefreshRateStats->getTotalTimes()["90fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
     times = mRefreshRateStats->getTotalTimes();
@@ -175,7 +176,7 @@
     // Because the power mode is not HWC_POWER_MODE_NORMAL, switching the config
     // does not update refresh rates that come from the config.
     mRefreshRateStats->setPowerMode(HWC_POWER_MODE_DOZE);
-    mRefreshRateStats->setConfigMode(CONFIG_ID_90);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_0);
     sixty = mRefreshRateStats->getTotalTimes()["60fps"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
     times = mRefreshRateStats->getTotalTimes();
@@ -183,7 +184,7 @@
     EXPECT_EQ(ninety, times["90fps"]);
     EXPECT_EQ(sixty, times["60fps"]);
 
-    mRefreshRateStats->setConfigMode(CONFIG_ID_60);
+    mRefreshRateStats->setConfigMode(CONFIG_ID_1);
     screenOff = mRefreshRateStats->getTotalTimes()["ScreenOff"];
     std::this_thread::sleep_for(std::chrono::milliseconds(2));
     times = mRefreshRateStats->getTotalTimes();
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index b4cc1e1..40536ab 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -50,10 +50,11 @@
             ::testing::UnitTest::GetInstance()->current_test_info();
     ALOGD("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
 
-    std::vector<scheduler::RefreshRateConfigs::InputConfig> configs{{/*hwcId=*/0, 16666667}};
-    mRefreshRateConfigs =
-            std::make_unique<scheduler::RefreshRateConfigs>(/*refreshRateSwitching=*/false, configs,
-                                                            /*currentConfig=*/0);
+    std::vector<scheduler::RefreshRateConfigs::InputConfig> configs{
+            {{HwcConfigIndexType(0), HwcConfigGroupType(0), 16666667}}};
+    mRefreshRateConfigs = std::make_unique<
+            scheduler::RefreshRateConfigs>(/*refreshRateSwitching=*/false, configs,
+                                           /*currentConfig=*/HwcConfigIndexType(0));
 
     mScheduler = std::make_unique<TestableScheduler>(*mRefreshRateConfigs);
 
diff --git a/services/surfaceflinger/tests/unittests/StrongTypingTest.cpp b/services/surfaceflinger/tests/unittests/StrongTypingTest.cpp
index b9ddcd7..5406879 100644
--- a/services/surfaceflinger/tests/unittests/StrongTypingTest.cpp
+++ b/services/surfaceflinger/tests/unittests/StrongTypingTest.cpp
@@ -56,18 +56,18 @@
     EXPECT_THAT(f1 + f2, Eq(FunkyType(32)));
     EXPECT_THAT(f2 + f1, Eq(FunkyType(32)));
 
-    EXPECT_THAT(++f1, Eq(11));
-    EXPECT_THAT(f1, Eq(11));
-    EXPECT_THAT(f1++, Eq(11));
-    EXPECT_THAT(f1++, Eq(12));
-    EXPECT_THAT(f1, Eq(13));
+    EXPECT_THAT(++f1.value(), Eq(11));
+    EXPECT_THAT(f1.value(), Eq(11));
+    EXPECT_THAT(f1++.value(), Eq(11));
+    EXPECT_THAT(f1++.value(), Eq(12));
+    EXPECT_THAT(f1.value(), Eq(13));
 
     auto f3 = f1;
     EXPECT_THAT(f1, Eq(f3));
     EXPECT_THAT(f1, Lt(f2));
 
     f3 += f1;
-    EXPECT_THAT(f1, Eq(13));
-    EXPECT_THAT(f3, Eq(26));
+    EXPECT_THAT(f1.value(), Eq(13));
+    EXPECT_THAT(f3.value(), Eq(26));
 }
 } // namespace android
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index e05e7a5..b2210ec 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -197,15 +197,15 @@
                         std::unique_ptr<EventControlThread> eventControlThread,
                         std::unique_ptr<EventThread> appEventThread,
                         std::unique_ptr<EventThread> sfEventThread) {
-        std::vector<scheduler::RefreshRateConfigs::InputConfig> configs{{/*hwcId=*/0, 16666667}};
-        mFlinger->mRefreshRateConfigs =
-                std::make_unique<scheduler::RefreshRateConfigs>(/*refreshRateSwitching=*/false,
-                                                                configs, /*currentConfig=*/0);
-        mFlinger->mRefreshRateStats =
-                std::make_unique<scheduler::RefreshRateStats>(*mFlinger->mRefreshRateConfigs,
-                                                              *mFlinger->mTimeStats,
-                                                              /*currentConfig=*/0,
-                                                              /*powerMode=*/HWC_POWER_MODE_OFF);
+        std::vector<scheduler::RefreshRateConfigs::InputConfig> configs{
+                {{HwcConfigIndexType(0), HwcConfigGroupType(0), 16666667}}};
+        mFlinger->mRefreshRateConfigs = std::make_unique<
+                scheduler::RefreshRateConfigs>(/*refreshRateSwitching=*/false, configs,
+                                               /*currentConfig=*/HwcConfigIndexType(0));
+        mFlinger->mRefreshRateStats = std::make_unique<
+                scheduler::RefreshRateStats>(*mFlinger->mRefreshRateConfigs, *mFlinger->mTimeStats,
+                                             /*currentConfig=*/HwcConfigIndexType(0),
+                                             /*powerMode=*/HWC_POWER_MODE_OFF);
 
         mScheduler =
                 new TestableScheduler(std::move(primaryDispSync), std::move(eventControlThread),
@@ -433,6 +433,7 @@
         static constexpr int32_t DEFAULT_WIDTH = 1920;
         static constexpr int32_t DEFAULT_HEIGHT = 1280;
         static constexpr int32_t DEFAULT_REFRESH_RATE = 16'666'666;
+        static constexpr int32_t DEFAULT_CONFIG_GROUP = 7;
         static constexpr int32_t DEFAULT_DPI = 320;
         static constexpr int32_t DEFAULT_ACTIVE_CONFIG = 0;
         static constexpr int32_t DEFAULT_POWER_MODE = 2;
@@ -456,7 +457,7 @@
             return *this;
         }
 
-        auto& setRefreshRate(int32_t refreshRate) {
+        auto& setRefreshRate(uint32_t refreshRate) {
             mRefreshRate = refreshRate;
             return *this;
         }
@@ -503,6 +504,7 @@
             config.setVsyncPeriod(mRefreshRate);
             config.setDpiX(mDpiX);
             config.setDpiY(mDpiY);
+            config.setConfigGroup(mConfigGroup);
             display->mutableConfigs().emplace(mActiveConfig, config.build());
             display->mutableIsConnected() = true;
             display->setPowerMode(static_cast<HWC2::PowerMode>(mPowerMode));
@@ -526,8 +528,9 @@
         hwc2_display_t mHwcDisplayId = DEFAULT_HWC_DISPLAY_ID;
         int32_t mWidth = DEFAULT_WIDTH;
         int32_t mHeight = DEFAULT_HEIGHT;
-        int32_t mRefreshRate = DEFAULT_REFRESH_RATE;
+        uint32_t mRefreshRate = DEFAULT_REFRESH_RATE;
         int32_t mDpiX = DEFAULT_DPI;
+        int32_t mConfigGroup = DEFAULT_CONFIG_GROUP;
         int32_t mDpiY = DEFAULT_DPI;
         int32_t mActiveConfig = DEFAULT_ACTIVE_CONFIG;
         int32_t mPowerMode = DEFAULT_POWER_MODE;
diff --git a/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp b/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp
index c012616..484947d 100644
--- a/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VSyncDispatchRealtimeTest.cpp
@@ -47,6 +47,10 @@
         return timePoint - floor + mPeriod;
     }
 
+    nsecs_t currentPeriod() const final { return mPeriod; }
+
+    void setPeriod(nsecs_t) final {}
+
 private:
     nsecs_t const mPeriod;
 };
@@ -73,6 +77,13 @@
         mBase = last_known;
     }
 
+    nsecs_t currentPeriod() const final {
+        std::lock_guard<decltype(mMutex)> lk(mMutex);
+        return mPeriod;
+    }
+
+    void setPeriod(nsecs_t) final {}
+
 private:
     std::mutex mutable mMutex;
     nsecs_t mPeriod;
diff --git a/services/surfaceflinger/tests/unittests/VSyncDispatchTimerQueueTest.cpp b/services/surfaceflinger/tests/unittests/VSyncDispatchTimerQueueTest.cpp
index 82950b5..d668a41 100644
--- a/services/surfaceflinger/tests/unittests/VSyncDispatchTimerQueueTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VSyncDispatchTimerQueueTest.cpp
@@ -39,6 +39,8 @@
 
     MOCK_METHOD1(addVsyncTimestamp, void(nsecs_t));
     MOCK_CONST_METHOD1(nextAnticipatedVSyncTimeFrom, nsecs_t(nsecs_t));
+    MOCK_CONST_METHOD0(currentPeriod, nsecs_t());
+    MOCK_METHOD1(setPeriod, void(nsecs_t));
 
     nsecs_t nextVSyncTime(nsecs_t timePoint) const {
         if (timePoint % mPeriod == 0) {
@@ -551,6 +553,32 @@
     EXPECT_EQ(mDispatch.schedule(cb0, 100, 1000), ScheduleResult::ReScheduled);
 }
 
+TEST_F(VSyncDispatchTimerQueueTest, canScheduleNegativeOffsetAgainstDifferentPeriods) {
+    CountingCallback cb0(mDispatch);
+    EXPECT_EQ(mDispatch.schedule(cb0, 500, 1000), ScheduleResult::Scheduled);
+    advanceToNextCallback();
+    EXPECT_EQ(mDispatch.schedule(cb0, 1100, 2000), ScheduleResult::Scheduled);
+}
+
+TEST_F(VSyncDispatchTimerQueueTest, canScheduleLargeNegativeOffset) {
+    Sequence seq;
+    EXPECT_CALL(mMockClock, alarmIn(_, 500)).InSequence(seq);
+    EXPECT_CALL(mMockClock, alarmIn(_, 600)).InSequence(seq);
+    CountingCallback cb0(mDispatch);
+    EXPECT_EQ(mDispatch.schedule(cb0, 500, 1000), ScheduleResult::Scheduled);
+    advanceToNextCallback();
+    EXPECT_EQ(mDispatch.schedule(cb0, 1900, 2000), ScheduleResult::Scheduled);
+}
+
+TEST_F(VSyncDispatchTimerQueueTest, cannotScheduleDoesNotAffectSchedulingState) {
+    EXPECT_CALL(mMockClock, alarmIn(_, 600));
+
+    CountingCallback cb(mDispatch);
+    EXPECT_EQ(mDispatch.schedule(cb, 400, 1000), ScheduleResult::Scheduled);
+    advanceToNextCallback();
+    EXPECT_EQ(mDispatch.schedule(cb, 100, 1000), ScheduleResult::CannotSchedule);
+}
+
 TEST_F(VSyncDispatchTimerQueueTest, helperMove) {
     EXPECT_CALL(mMockClock, alarmIn(_, 500)).Times(1);
     EXPECT_CALL(mMockClock, alarmCancel()).Times(1);
@@ -599,11 +627,10 @@
     VSyncDispatchTimerQueueEntry entry("test", [](auto) {});
 
     EXPECT_FALSE(entry.wakeupTime());
-    auto const wakeup = entry.schedule(100, 500, mStubTracker, 0);
-    auto const queried = entry.wakeupTime();
-    ASSERT_TRUE(queried);
-    EXPECT_THAT(*queried, Eq(wakeup));
-    EXPECT_THAT(*queried, Eq(900));
+    EXPECT_THAT(entry.schedule(100, 500, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
+    auto const wakeup = entry.wakeupTime();
+    ASSERT_TRUE(wakeup);
+    EXPECT_THAT(*wakeup, Eq(900));
 
     entry.disarm();
     EXPECT_FALSE(entry.wakeupTime());
@@ -619,11 +646,10 @@
     VSyncDispatchTimerQueueEntry entry("test", [](auto) {});
 
     EXPECT_FALSE(entry.wakeupTime());
-    auto const wakeup = entry.schedule(500, 994, mStubTracker, now);
-    auto const queried = entry.wakeupTime();
-    ASSERT_TRUE(queried);
-    EXPECT_THAT(*queried, Eq(wakeup));
-    EXPECT_THAT(*queried, Eq(9500));
+    EXPECT_THAT(entry.schedule(500, 994, mStubTracker, now), Eq(ScheduleResult::Scheduled));
+    auto const wakeup = entry.wakeupTime();
+    ASSERT_TRUE(wakeup);
+    EXPECT_THAT(*wakeup, Eq(9500));
 }
 
 TEST_F(VSyncDispatchTimerQueueEntryTest, runCallback) {
@@ -634,8 +660,10 @@
         calledTime = time;
     });
 
-    auto const wakeup = entry.schedule(100, 500, mStubTracker, 0);
-    EXPECT_THAT(wakeup, Eq(900));
+    EXPECT_THAT(entry.schedule(100, 500, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
+    auto const wakeup = entry.wakeupTime();
+    ASSERT_TRUE(wakeup);
+    EXPECT_THAT(*wakeup, Eq(900));
 
     entry.callback(entry.executing());
 
@@ -659,23 +687,40 @@
     entry.update(mStubTracker, 0);
     EXPECT_FALSE(entry.wakeupTime());
 
-    auto const wakeup = entry.schedule(100, 500, mStubTracker, 0);
+    EXPECT_THAT(entry.schedule(100, 500, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
+    auto wakeup = entry.wakeupTime();
+    ASSERT_TRUE(wakeup);
     EXPECT_THAT(wakeup, Eq(900));
 
     entry.update(mStubTracker, 0);
-    auto const queried = entry.wakeupTime();
-    ASSERT_TRUE(queried);
-    EXPECT_THAT(*queried, Eq(920));
+    wakeup = entry.wakeupTime();
+    ASSERT_TRUE(wakeup);
+    EXPECT_THAT(*wakeup, Eq(920));
 }
 
 TEST_F(VSyncDispatchTimerQueueEntryTest, skipsUpdateIfJustScheduled) {
     VSyncDispatchTimerQueueEntry entry("test", [](auto) {});
-    auto const wakeup = entry.schedule(100, 500, mStubTracker, 0);
+    EXPECT_THAT(entry.schedule(100, 500, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
     entry.update(mStubTracker, 0);
 
-    auto const queried = entry.wakeupTime();
-    ASSERT_TRUE(queried);
-    EXPECT_THAT(*queried, Eq(wakeup));
+    auto const wakeup = entry.wakeupTime();
+    ASSERT_TRUE(wakeup);
+    EXPECT_THAT(*wakeup, Eq(wakeup));
+}
+
+TEST_F(VSyncDispatchTimerQueueEntryTest, reportsCannotScheduleIfMissedOpportunity) {
+    VSyncDispatchTimerQueueEntry entry("test", [](auto) {});
+    EXPECT_THAT(entry.schedule(100, 500, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
+    entry.executing();
+    EXPECT_THAT(entry.schedule(200, 500, mStubTracker, 0), Eq(ScheduleResult::CannotSchedule));
+    EXPECT_THAT(entry.schedule(50, 500, mStubTracker, 0), Eq(ScheduleResult::CannotSchedule));
+    EXPECT_THAT(entry.schedule(200, 1001, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
+}
+
+TEST_F(VSyncDispatchTimerQueueEntryTest, reportsReScheduleIfStillTime) {
+    VSyncDispatchTimerQueueEntry entry("test", [](auto) {});
+    EXPECT_THAT(entry.schedule(100, 500, mStubTracker, 0), Eq(ScheduleResult::Scheduled));
+    EXPECT_THAT(entry.schedule(200, 500, mStubTracker, 0), Eq(ScheduleResult::ReScheduled));
 }
 
 } // namespace android::scheduler
diff --git a/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp b/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp
new file mode 100644
index 0000000..d0c8090
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/VSyncPredictorTest.cpp
@@ -0,0 +1,322 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "LibSurfaceFlingerUnittests"
+#define LOG_NDEBUG 0
+
+#include "Scheduler/VSyncPredictor.h"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <algorithm>
+#include <chrono>
+#include <utility>
+
+using namespace testing;
+using namespace std::literals;
+
+namespace android::scheduler {
+
+MATCHER_P2(IsCloseTo, value, tolerance, "is within tolerance") {
+    return arg <= value + tolerance && value >= value - tolerance;
+}
+
+std::vector<nsecs_t> generateVsyncTimestamps(size_t count, nsecs_t period, nsecs_t bias) {
+    std::vector<nsecs_t> vsyncs(count);
+    std::generate(vsyncs.begin(), vsyncs.end(),
+                  [&, n = 0]() mutable { return n++ * period + bias; });
+    return vsyncs;
+}
+
+struct VSyncPredictorTest : testing::Test {
+    nsecs_t mNow = 0;
+    nsecs_t mPeriod = 1000;
+    static constexpr size_t kHistorySize = 10;
+    static constexpr size_t kMinimumSamplesForPrediction = 6;
+    static constexpr size_t kOutlierTolerancePercent = 25;
+    static constexpr nsecs_t mMaxRoundingError = 100;
+
+    VSyncPredictor tracker{mPeriod, kHistorySize, kMinimumSamplesForPrediction,
+                           kOutlierTolerancePercent};
+};
+
+TEST_F(VSyncPredictorTest, reportsAnticipatedPeriod) {
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+
+    EXPECT_THAT(slope, Eq(mPeriod));
+    EXPECT_THAT(intercept, Eq(0));
+
+    auto const changedPeriod = 2000;
+    tracker.setPeriod(changedPeriod);
+    std::tie(slope, intercept) = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, Eq(changedPeriod));
+    EXPECT_THAT(intercept, Eq(0));
+}
+
+TEST_F(VSyncPredictorTest, reportsSamplesNeededWhenHasNoDataPoints) {
+    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
+        EXPECT_TRUE(tracker.needsMoreSamples(mNow += mPeriod));
+        tracker.addVsyncTimestamp(mNow);
+    }
+    EXPECT_FALSE(tracker.needsMoreSamples(mNow));
+}
+
+TEST_F(VSyncPredictorTest, reportsSamplesNeededAfterExplicitRateChange) {
+    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
+        tracker.addVsyncTimestamp(mNow += mPeriod);
+    }
+    EXPECT_FALSE(tracker.needsMoreSamples(mNow));
+
+    auto const changedPeriod = mPeriod * 2;
+    tracker.setPeriod(changedPeriod);
+    EXPECT_TRUE(tracker.needsMoreSamples(mNow));
+
+    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
+        EXPECT_TRUE(tracker.needsMoreSamples(mNow += changedPeriod));
+        tracker.addVsyncTimestamp(mNow);
+    }
+    EXPECT_FALSE(tracker.needsMoreSamples(mNow));
+}
+
+TEST_F(VSyncPredictorTest, transitionsToModelledPointsAfterSynthetic) {
+    auto last = mNow;
+    auto const bias = 10;
+    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
+        EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(last + mPeriod));
+        mNow += mPeriod - bias;
+        last = mNow;
+        tracker.addVsyncTimestamp(mNow);
+        mNow += bias;
+    }
+
+    EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(mNow + mPeriod - bias));
+    EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow + 100), Eq(mNow + mPeriod - bias));
+    EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow + 990), Eq(mNow + 2 * mPeriod - bias));
+}
+
+TEST_F(VSyncPredictorTest, uponNotifiedOfInaccuracyUsesSynthetic) {
+    auto const slightlyLessPeriod = mPeriod - 10;
+    auto const changedPeriod = mPeriod - 1;
+    for (auto i = 0u; i < kMinimumSamplesForPrediction; i++) {
+        tracker.addVsyncTimestamp(mNow += slightlyLessPeriod);
+    }
+
+    EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(mNow + slightlyLessPeriod));
+    tracker.setPeriod(changedPeriod);
+    EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(mNow + changedPeriod));
+}
+
+TEST_F(VSyncPredictorTest, adaptsToFenceTimelines_60hzHighVariance) {
+    // these are precomputed simulated 16.6s vsyncs with uniform distribution +/- 1.6ms error
+    std::vector<nsecs_t> const simulatedVsyncs{
+            15492949,  32325658,  49534984,  67496129,  84652891,
+            100332564, 117737004, 132125931, 149291099, 165199602,
+    };
+    auto constexpr idealPeriod = 16600000;
+    auto constexpr expectedPeriod = 16639242;
+    auto constexpr expectedIntercept = 1049341;
+
+    tracker.setPeriod(idealPeriod);
+    for (auto const& timestamp : simulatedVsyncs) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, IsCloseTo(expectedPeriod, mMaxRoundingError));
+    EXPECT_THAT(intercept, IsCloseTo(expectedIntercept, mMaxRoundingError));
+}
+
+TEST_F(VSyncPredictorTest, adaptsToFenceTimelines_90hzLowVariance) {
+    // these are precomputed simulated 11.1 vsyncs with uniform distribution +/- 1ms error
+    std::vector<nsecs_t> const simulatedVsyncs{
+            11167047, 22603464, 32538479, 44938134, 56321268,
+            66730346, 78062637, 88171429, 99707843, 111397621,
+    };
+    auto idealPeriod = 11110000;
+    auto expectedPeriod = 11089413;
+    auto expectedIntercept = 94421;
+
+    tracker.setPeriod(idealPeriod);
+    for (auto const& timestamp : simulatedVsyncs) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, IsCloseTo(expectedPeriod, mMaxRoundingError));
+    EXPECT_THAT(intercept, IsCloseTo(expectedIntercept, mMaxRoundingError));
+}
+
+TEST_F(VSyncPredictorTest, adaptsToFenceTimelinesDiscontinuous_22hzLowVariance) {
+    // these are 11.1s vsyncs with low variance, randomly computed, between -1 and 1ms
+    std::vector<nsecs_t> const simulatedVsyncs{
+            45259463,   // 0
+            91511026,   // 1
+            136307650,  // 2
+            1864501714, // 40
+            1908641034, // 41
+            1955278544, // 42
+            4590180096, // 100
+            4681594994, // 102
+            5499224734, // 120
+            5591378272, // 122
+    };
+    auto idealPeriod = 45454545;
+    auto expectedPeriod = 45450152;
+    auto expectedIntercept = 469647;
+
+    tracker.setPeriod(idealPeriod);
+    for (auto const& timestamp : simulatedVsyncs) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, IsCloseTo(expectedPeriod, mMaxRoundingError));
+    EXPECT_THAT(intercept, IsCloseTo(expectedIntercept, mMaxRoundingError));
+}
+
+TEST_F(VSyncPredictorTest, againstOutliersDiscontinuous_500hzLowVariance) {
+    std::vector<nsecs_t> const simulatedVsyncs{
+            1992548,    // 0
+            4078038,    // 1
+            6165794,    // 2
+            7958171,    // 3
+            10193537,   // 4
+            2401840200, // 1200
+            2403000000, // an outlier that should be excluded (1201 and a half)
+            2405803629, // 1202
+            2408028599, // 1203
+            2410121051, // 1204
+    };
+    auto idealPeriod = 2000000;
+    auto expectedPeriod = 1999892;
+    auto expectedIntercept = 175409;
+
+    tracker.setPeriod(idealPeriod);
+    for (auto const& timestamp : simulatedVsyncs) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, IsCloseTo(expectedPeriod, mMaxRoundingError));
+    EXPECT_THAT(intercept, IsCloseTo(expectedIntercept, mMaxRoundingError));
+}
+
+TEST_F(VSyncPredictorTest, handlesVsyncChange) {
+    auto const fastPeriod = 100;
+    auto const fastTimeBase = 100;
+    auto const slowPeriod = 400;
+    auto const slowTimeBase = 800;
+    auto const simulatedVsyncsFast =
+            generateVsyncTimestamps(kMinimumSamplesForPrediction, fastPeriod, fastTimeBase);
+    auto const simulatedVsyncsSlow =
+            generateVsyncTimestamps(kMinimumSamplesForPrediction, slowPeriod, slowTimeBase);
+
+    tracker.setPeriod(fastPeriod);
+    for (auto const& timestamp : simulatedVsyncsFast) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+
+    auto const mMaxRoundingError = 100;
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, IsCloseTo(fastPeriod, mMaxRoundingError));
+    EXPECT_THAT(intercept, IsCloseTo(0, mMaxRoundingError));
+
+    tracker.setPeriod(slowPeriod);
+    for (auto const& timestamp : simulatedVsyncsSlow) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    std::tie(slope, intercept) = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, IsCloseTo(slowPeriod, mMaxRoundingError));
+    EXPECT_THAT(intercept, IsCloseTo(0, mMaxRoundingError));
+}
+
+TEST_F(VSyncPredictorTest, willBeAccurateUsingPriorResultsForRate) {
+    auto const fastPeriod = 101000;
+    auto const fastTimeBase = fastPeriod - 500;
+    auto const fastPeriod2 = 99000;
+
+    auto const slowPeriod = 400000;
+    auto const slowTimeBase = 800000 - 201;
+    auto const simulatedVsyncsFast =
+            generateVsyncTimestamps(kMinimumSamplesForPrediction, fastPeriod, fastTimeBase);
+    auto const simulatedVsyncsSlow =
+            generateVsyncTimestamps(kMinimumSamplesForPrediction, slowPeriod, slowTimeBase);
+    auto const simulatedVsyncsFast2 =
+            generateVsyncTimestamps(kMinimumSamplesForPrediction, fastPeriod2, fastTimeBase);
+
+    auto idealPeriod = 100000;
+    tracker.setPeriod(idealPeriod);
+    for (auto const& timestamp : simulatedVsyncsFast) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    auto [slope, intercept] = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, Eq(fastPeriod));
+    EXPECT_THAT(intercept, Eq(0));
+
+    tracker.setPeriod(slowPeriod);
+    for (auto const& timestamp : simulatedVsyncsSlow) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+
+    // we had a model for 100ns mPeriod before, use that until the new samples are
+    // sufficiently built up
+    tracker.setPeriod(idealPeriod);
+    std::tie(slope, intercept) = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, Eq(fastPeriod));
+    EXPECT_THAT(intercept, Eq(0));
+
+    for (auto const& timestamp : simulatedVsyncsFast2) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    std::tie(slope, intercept) = tracker.getVSyncPredictionModel();
+    EXPECT_THAT(slope, Eq(fastPeriod2));
+    EXPECT_THAT(intercept, Eq(0));
+}
+
+TEST_F(VSyncPredictorTest, willBecomeInaccurateAfterA_longTimeWithNoSamples) {
+    auto const simulatedVsyncs = generateVsyncTimestamps(kMinimumSamplesForPrediction, mPeriod, 0);
+
+    for (auto const& timestamp : simulatedVsyncs) {
+        tracker.addVsyncTimestamp(timestamp);
+    }
+    auto const mNow = *simulatedVsyncs.rbegin();
+    EXPECT_FALSE(tracker.needsMoreSamples(mNow));
+
+    // TODO: would be better to decay this as a result of the variance of the samples
+    static auto constexpr aLongTimeOut = 1000000000;
+    EXPECT_TRUE(tracker.needsMoreSamples(mNow + aLongTimeOut));
+}
+
+TEST_F(VSyncPredictorTest, idealModelPredictionsBeforeRegressionModelIsBuilt) {
+    auto const simulatedVsyncs =
+            generateVsyncTimestamps(kMinimumSamplesForPrediction + 1, mPeriod, 0);
+    nsecs_t const mNow = 0;
+    EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(mNow), Eq(mPeriod));
+
+    nsecs_t const aBitOfTime = 422;
+
+    for (auto i = 0; i < kMinimumSamplesForPrediction; i++) {
+        tracker.addVsyncTimestamp(simulatedVsyncs[i]);
+        EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(simulatedVsyncs[i] + aBitOfTime),
+                    Eq(mPeriod + simulatedVsyncs[i]));
+    }
+
+    for (auto i = kMinimumSamplesForPrediction; i < simulatedVsyncs.size(); i++) {
+        tracker.addVsyncTimestamp(simulatedVsyncs[i]);
+        EXPECT_THAT(tracker.nextAnticipatedVSyncTimeFrom(simulatedVsyncs[i] + aBitOfTime),
+                    Eq(mPeriod + simulatedVsyncs[i]));
+    }
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp b/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
new file mode 100644
index 0000000..84df019
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
@@ -0,0 +1,270 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "LibSurfaceFlingerUnittests"
+#define LOG_NDEBUG 0
+
+#include "Scheduler/TimeKeeper.h"
+#include "Scheduler/VSyncDispatch.h"
+#include "Scheduler/VSyncReactor.h"
+#include "Scheduler/VSyncTracker.h"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <ui/Fence.h>
+#include <ui/FenceTime.h>
+#include <array>
+
+using namespace testing;
+using namespace std::literals;
+namespace android::scheduler {
+
+class MockVSyncTracker : public VSyncTracker {
+public:
+    MOCK_METHOD1(addVsyncTimestamp, void(nsecs_t));
+    MOCK_CONST_METHOD1(nextAnticipatedVSyncTimeFrom, nsecs_t(nsecs_t));
+    MOCK_CONST_METHOD0(currentPeriod, nsecs_t());
+    MOCK_METHOD1(setPeriod, void(nsecs_t));
+};
+
+class VSyncTrackerWrapper : public VSyncTracker {
+public:
+    VSyncTrackerWrapper(std::shared_ptr<VSyncTracker> const& tracker) : mTracker(tracker) {}
+
+    void addVsyncTimestamp(nsecs_t timestamp) final { mTracker->addVsyncTimestamp(timestamp); }
+    nsecs_t nextAnticipatedVSyncTimeFrom(nsecs_t timePoint) const final {
+        return mTracker->nextAnticipatedVSyncTimeFrom(timePoint);
+    }
+    nsecs_t currentPeriod() const final { return mTracker->currentPeriod(); }
+    void setPeriod(nsecs_t period) { mTracker->setPeriod(period); }
+
+private:
+    std::shared_ptr<VSyncTracker> const mTracker;
+};
+
+class MockClock : public Clock {
+public:
+    MOCK_CONST_METHOD0(now, nsecs_t());
+};
+
+class ClockWrapper : public Clock {
+public:
+    ClockWrapper(std::shared_ptr<Clock> const& clock) : mClock(clock) {}
+
+    nsecs_t now() const { return mClock->now(); }
+
+private:
+    std::shared_ptr<Clock> const mClock;
+};
+
+class MockVSyncDispatch : public VSyncDispatch {
+public:
+    MOCK_METHOD2(registerCallback, CallbackToken(std::function<void(nsecs_t)> const&, std::string));
+    MOCK_METHOD1(unregisterCallback, void(CallbackToken));
+    MOCK_METHOD3(schedule, ScheduleResult(CallbackToken, nsecs_t, nsecs_t));
+    MOCK_METHOD1(cancel, CancelResult(CallbackToken token));
+};
+
+class VSyncDispatchWrapper : public VSyncDispatch {
+public:
+    VSyncDispatchWrapper(std::shared_ptr<VSyncDispatch> const& dispatch) : mDispatch(dispatch) {}
+    CallbackToken registerCallback(std::function<void(nsecs_t)> const& callbackFn,
+                                   std::string callbackName) final {
+        return mDispatch->registerCallback(callbackFn, callbackName);
+    }
+
+    void unregisterCallback(CallbackToken token) final { mDispatch->unregisterCallback(token); }
+
+    ScheduleResult schedule(CallbackToken token, nsecs_t workDuration,
+                            nsecs_t earliestVsync) final {
+        return mDispatch->schedule(token, workDuration, earliestVsync);
+    }
+
+    CancelResult cancel(CallbackToken token) final { return mDispatch->cancel(token); }
+
+private:
+    std::shared_ptr<VSyncDispatch> const mDispatch;
+};
+
+std::shared_ptr<FenceTime> generateInvalidFence() {
+    sp<Fence> fence = new Fence();
+    return std::make_shared<FenceTime>(fence);
+}
+
+std::shared_ptr<FenceTime> generatePendingFence() {
+    sp<Fence> fence = new Fence(dup(fileno(tmpfile())));
+    return std::make_shared<FenceTime>(fence);
+}
+
+void signalFenceWithTime(std::shared_ptr<FenceTime> const& fence, nsecs_t time) {
+    FenceTime::Snapshot snap(time);
+    fence->applyTrustedSnapshot(snap);
+}
+
+std::shared_ptr<FenceTime> generateSignalledFenceWithTime(nsecs_t time) {
+    sp<Fence> fence = new Fence(dup(fileno(tmpfile())));
+    std::shared_ptr<FenceTime> ft = std::make_shared<FenceTime>(fence);
+    signalFenceWithTime(ft, time);
+    return ft;
+}
+
+class VSyncReactorTest : public testing::Test {
+protected:
+    VSyncReactorTest()
+          : mMockDispatch(std::make_shared<MockVSyncDispatch>()),
+            mMockTracker(std::make_shared<NiceMock<MockVSyncTracker>>()),
+            mMockClock(std::make_shared<NiceMock<MockClock>>()),
+            mReactor(std::make_unique<ClockWrapper>(mMockClock),
+                     std::make_unique<VSyncDispatchWrapper>(mMockDispatch),
+                     std::make_unique<VSyncTrackerWrapper>(mMockTracker), kPendingLimit) {}
+
+    std::shared_ptr<MockVSyncDispatch> mMockDispatch;
+    std::shared_ptr<MockVSyncTracker> mMockTracker;
+    std::shared_ptr<MockClock> mMockClock;
+    static constexpr size_t kPendingLimit = 3;
+    static constexpr nsecs_t dummyTime = 47;
+    VSyncReactor mReactor;
+};
+
+TEST_F(VSyncReactorTest, addingNullFenceCheck) {
+    EXPECT_FALSE(mReactor.addPresentFence(nullptr));
+}
+
+TEST_F(VSyncReactorTest, addingInvalidFenceSignalsNeedsMoreInfo) {
+    EXPECT_TRUE(mReactor.addPresentFence(generateInvalidFence()));
+}
+
+TEST_F(VSyncReactorTest, addingSignalledFenceAddsToTracker) {
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(dummyTime));
+    EXPECT_FALSE(mReactor.addPresentFence(generateSignalledFenceWithTime(dummyTime)));
+}
+
+TEST_F(VSyncReactorTest, addingPendingFenceAddsSignalled) {
+    nsecs_t anotherDummyTime = 2919019201;
+
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(_)).Times(0);
+    auto pendingFence = generatePendingFence();
+    EXPECT_FALSE(mReactor.addPresentFence(pendingFence));
+    Mock::VerifyAndClearExpectations(mMockTracker.get());
+
+    signalFenceWithTime(pendingFence, dummyTime);
+
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(dummyTime));
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(anotherDummyTime));
+    EXPECT_FALSE(mReactor.addPresentFence(generateSignalledFenceWithTime(anotherDummyTime)));
+}
+
+TEST_F(VSyncReactorTest, limitsPendingFences) {
+    std::array<std::shared_ptr<FenceTime>, kPendingLimit * 2> fences;
+    std::array<nsecs_t, fences.size()> fakeTimes;
+    std::generate(fences.begin(), fences.end(), [] { return generatePendingFence(); });
+    std::generate(fakeTimes.begin(), fakeTimes.end(), [i = 10]() mutable {
+        i++;
+        return i * i;
+    });
+
+    for (auto const& fence : fences) {
+        mReactor.addPresentFence(fence);
+    }
+
+    for (auto i = fences.size() - kPendingLimit; i < fences.size(); i++) {
+        EXPECT_CALL(*mMockTracker, addVsyncTimestamp(fakeTimes[i]));
+    }
+
+    for (auto i = 0u; i < fences.size(); i++) {
+        signalFenceWithTime(fences[i], fakeTimes[i]);
+    }
+    mReactor.addPresentFence(generatePendingFence());
+}
+
+TEST_F(VSyncReactorTest, ignoresPresentFencesWhenToldTo) {
+    static constexpr size_t aFewTimes = 8;
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(dummyTime)).Times(1);
+
+    mReactor.setIgnorePresentFences(true);
+    for (auto i = 0; i < aFewTimes; i++) {
+        mReactor.addPresentFence(generateSignalledFenceWithTime(dummyTime));
+    }
+
+    mReactor.setIgnorePresentFences(false);
+    EXPECT_FALSE(mReactor.addPresentFence(generateSignalledFenceWithTime(dummyTime)));
+}
+
+TEST_F(VSyncReactorTest, queriesTrackerForNextRefreshNow) {
+    nsecs_t const fakeTimestamp = 4839;
+    EXPECT_CALL(*mMockTracker, currentPeriod()).Times(0);
+    EXPECT_CALL(*mMockTracker, nextAnticipatedVSyncTimeFrom(_))
+            .Times(1)
+            .WillOnce(Return(fakeTimestamp));
+
+    EXPECT_THAT(mReactor.computeNextRefresh(0), Eq(fakeTimestamp));
+}
+
+TEST_F(VSyncReactorTest, queriesTrackerForExpectedPresentTime) {
+    nsecs_t const fakeTimestamp = 4839;
+    EXPECT_CALL(*mMockTracker, currentPeriod()).Times(0);
+    EXPECT_CALL(*mMockTracker, nextAnticipatedVSyncTimeFrom(_))
+            .Times(1)
+            .WillOnce(Return(fakeTimestamp));
+
+    EXPECT_THAT(mReactor.expectedPresentTime(), Eq(fakeTimestamp));
+}
+
+TEST_F(VSyncReactorTest, queriesTrackerForNextRefreshFuture) {
+    nsecs_t const fakeTimestamp = 4839;
+    nsecs_t const fakePeriod = 1010;
+    nsecs_t const fakeNow = 2214;
+    int const numPeriodsOut = 3;
+    EXPECT_CALL(*mMockClock, now()).WillOnce(Return(fakeNow));
+    EXPECT_CALL(*mMockTracker, currentPeriod()).WillOnce(Return(fakePeriod));
+    EXPECT_CALL(*mMockTracker, nextAnticipatedVSyncTimeFrom(fakeNow + numPeriodsOut * fakePeriod))
+            .WillOnce(Return(fakeTimestamp));
+    EXPECT_THAT(mReactor.computeNextRefresh(numPeriodsOut), Eq(fakeTimestamp));
+}
+
+TEST_F(VSyncReactorTest, getPeriod) {
+    nsecs_t const fakePeriod = 1010;
+    EXPECT_CALL(*mMockTracker, currentPeriod()).WillOnce(Return(fakePeriod));
+    EXPECT_THAT(mReactor.getPeriod(), Eq(fakePeriod));
+}
+
+TEST_F(VSyncReactorTest, setPeriod) {
+    nsecs_t const fakePeriod = 4098;
+    EXPECT_CALL(*mMockTracker, setPeriod(fakePeriod));
+    mReactor.setPeriod(fakePeriod);
+}
+
+TEST_F(VSyncReactorTest, addResyncSampleTypical) {
+    nsecs_t const fakeTimestamp = 3032;
+    bool periodFlushed = false;
+
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(fakeTimestamp));
+    EXPECT_FALSE(mReactor.addResyncSample(fakeTimestamp, &periodFlushed));
+    EXPECT_FALSE(periodFlushed);
+}
+
+TEST_F(VSyncReactorTest, addResyncSamplePeriodChanges) {
+    bool periodFlushed = false;
+    nsecs_t const fakeTimestamp = 4398;
+    nsecs_t const newPeriod = 3490;
+    EXPECT_CALL(*mMockTracker, addVsyncTimestamp(fakeTimestamp));
+    mReactor.setPeriod(newPeriod);
+    EXPECT_FALSE(mReactor.addResyncSample(fakeTimestamp, &periodFlushed));
+    EXPECT_TRUE(periodFlushed);
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
index 98c6aa0..2453ccb 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
@@ -39,8 +39,8 @@
 using android::hardware::graphics::composer::V2_1::Display;
 using android::hardware::graphics::composer::V2_1::Error;
 using android::hardware::graphics::composer::V2_1::IComposer;
-using android::hardware::graphics::composer::V2_1::IComposerCallback;
 using android::hardware::graphics::composer::V2_1::Layer;
+using android::hardware::graphics::composer::V2_4::IComposerCallback;
 using android::hardware::graphics::composer::V2_4::IComposerClient;
 
 class Composer : public Hwc2::Composer {
@@ -120,8 +120,16 @@
     MOCK_METHOD3(setLayerPerFrameMetadataBlobs,
                  Error(Display, Layer, const std::vector<IComposerClient::PerFrameMetadataBlob>&));
     MOCK_METHOD2(setDisplayBrightness, Error(Display, float));
+    MOCK_METHOD0(isVsyncPeriodSwitchSupported, bool());
     MOCK_METHOD2(getDisplayCapabilities, Error(Display, std::vector<DisplayCapability>*));
-    MOCK_METHOD2(getDisplayConnectionType, Error(Display, IComposerClient::DisplayConnectionType*));
+    MOCK_METHOD2(getDisplayConnectionType,
+                 V2_4::Error(Display, IComposerClient::DisplayConnectionType*));
+    MOCK_METHOD3(getSupportedDisplayVsyncPeriods,
+                 V2_4::Error(Display, Config, std::vector<VsyncPeriodNanos>*));
+    MOCK_METHOD2(getDisplayVsyncPeriod, V2_4::Error(Display, VsyncPeriodNanos*));
+    MOCK_METHOD4(setActiveConfigWithConstraints,
+                 V2_4::Error(Display, Config, const IComposerClient::VsyncPeriodChangeConstraints&,
+                             VsyncPeriodChangeTimeline*));
 };
 
 } // namespace mock
diff --git a/services/surfaceflinger/tests/unittests/mock/MockEventThread.h b/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
index ed35ebf..f7c3804 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockEventThread.h
@@ -33,7 +33,7 @@
     MOCK_METHOD0(onScreenReleased, void());
     MOCK_METHOD0(onScreenAcquired, void());
     MOCK_METHOD2(onHotplugReceived, void(PhysicalDisplayId, bool));
-    MOCK_METHOD2(onConfigChanged, void(PhysicalDisplayId, int32_t));
+    MOCK_METHOD2(onConfigChanged, void(PhysicalDisplayId, HwcConfigIndexType));
     MOCK_CONST_METHOD1(dump, void(std::string&));
     MOCK_METHOD1(setPhaseOffset, void(nsecs_t phaseOffset));
     MOCK_METHOD1(registerDisplayEventConnection,
diff --git a/services/surfaceflinger/tests/utils/TransactionUtils.h b/services/surfaceflinger/tests/utils/TransactionUtils.h
index 22df255..2c63da0 100644
--- a/services/surfaceflinger/tests/utils/TransactionUtils.h
+++ b/services/surfaceflinger/tests/utils/TransactionUtils.h
@@ -136,6 +136,11 @@
         }
     }
 
+    static void fillSurfaceRGBA8(const sp<SurfaceControl>& sc, const Color& color,
+                                 bool unlock = true) {
+        fillSurfaceRGBA8(sc, color.r, color.g, color.b, unlock);
+    }
+
     // Fill an RGBA_8888 formatted surface with a single color.
     static void fillSurfaceRGBA8(const sp<SurfaceControl>& sc, uint8_t r, uint8_t g, uint8_t b,
                                  bool unlock = true) {
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index 8f4667e..a020e74 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -1311,7 +1311,14 @@
                                             &img.dequeue_fence);
         if (err != 0) {
             ALOGE("dequeueBuffer[%u] failed: %s (%d)", i, strerror(-err), err);
-            result = VK_ERROR_SURFACE_LOST_KHR;
+            switch (-err) {
+                case ENOMEM:
+                    result = VK_ERROR_OUT_OF_DEVICE_MEMORY;
+                    break;
+                default:
+                    result = VK_ERROR_SURFACE_LOST_KHR;
+                    break;
+            }
             break;
         }
         img.buffer = buffer;
diff --git a/vulkan/vkjson/Android.bp b/vulkan/vkjson/Android.bp
index a626e48..8528898 100644
--- a/vulkan/vkjson/Android.bp
+++ b/vulkan/vkjson/Android.bp
@@ -1,4 +1,4 @@
-cc_library_static {
+cc_library_shared {
     name: "libvkjson",
     srcs: [
         "vkjson.cc",
@@ -15,11 +15,14 @@
     export_include_dirs: [
         ".",
     ],
+    shared_libs: [
+        "libvulkan",
+    ],
     whole_static_libs: [
         "libjsoncpp",
     ],
-    header_libs: [
-        "vulkan_headers",
+    export_shared_lib_headers: [
+        "libvulkan",
     ],
 }