diff --git a/Android.bp b/Android.bp
index 615a7a8..3992f82 100644
--- a/Android.bp
+++ b/Android.bp
@@ -56,7 +56,8 @@
 
 cc_library_headers {
     name: "libandroid_sensor_headers",
-    vendor: true,
+    vendor_available: true,
+    host_supported: true,
     export_include_dirs: ["include_sensor"],
 }
 
diff --git a/aidl/gui/android/view/Surface.aidl b/aidl/gui/android/view/Surface.aidl
index 7e89220..bb3faaf 100644
--- a/aidl/gui/android/view/Surface.aidl
+++ b/aidl/gui/android/view/Surface.aidl
@@ -17,4 +17,4 @@
 
 package android.view;
 
-parcelable Surface cpp_header "gui/view/Surface.h";
+@JavaOnlyStableParcelable @NdkOnlyStableParcelable parcelable Surface cpp_header "gui/view/Surface.h" ndk_header "android/native_window_aidl.h";
diff --git a/cmds/dumpstate/DumpstateInternal.cpp b/cmds/dumpstate/DumpstateInternal.cpp
index 3091f6b..6f7fea3 100644
--- a/cmds/dumpstate/DumpstateInternal.cpp
+++ b/cmds/dumpstate/DumpstateInternal.cpp
@@ -162,17 +162,16 @@
         return 0;
     }
     bool newline = false;
+    int poll_timeout_ms = 30 * 1000;
     while (true) {
-        uint64_t start_time = Nanotime();
         pollfd fds[] = { { .fd = fd, .events = POLLIN } };
-        int ret = TEMP_FAILURE_RETRY(poll(fds, arraysize(fds), 30 * 1000));
+        int ret = TEMP_FAILURE_RETRY(poll(fds, arraysize(fds), poll_timeout_ms));
         if (ret == -1) {
             dprintf(out_fd, "*** %s: poll failed: %s\n", path, strerror(errno));
             newline = true;
             break;
-        } else if (ret == 0) {
-            uint64_t elapsed = Nanotime() - start_time;
-            dprintf(out_fd, "*** %s: Timed out after %.3fs\n", path, (float)elapsed / NANOS_PER_SEC);
+        } else if (ret == 0 && poll_timeout_ms != 0) {
+            dprintf(out_fd, "*** %s: Timed out after %ds\n", path, poll_timeout_ms / 1000 );
             newline = true;
             break;
         } else {
@@ -189,6 +188,7 @@
                 break;
             }
         }
+        poll_timeout_ms = 0;
     }
 
     if (!newline) dprintf(out_fd, "\n");
diff --git a/cmds/dumpstate/dumpstate.cpp b/cmds/dumpstate/dumpstate.cpp
index ee1c63a..12de33f 100644
--- a/cmds/dumpstate/dumpstate.cpp
+++ b/cmds/dumpstate/dumpstate.cpp
@@ -194,6 +194,8 @@
 static const std::string TOMBSTONE_FILE_PREFIX = "tombstone_";
 static const std::string ANR_DIR = "/data/anr/";
 static const std::string ANR_FILE_PREFIX = "anr_";
+static const std::string SHUTDOWN_CHECKPOINTS_DIR = "/data/system/shutdown-checkpoints/";
+static const std::string SHUTDOWN_CHECKPOINTS_FILE_PREFIX = "checkpoints-";
 
 // TODO: temporary variables and functions used during C++ refactoring
 
@@ -1109,6 +1111,16 @@
     RunCommand("IP6TABLES RAW", {"ip6tables", "-t", "raw", "-L", "-nvx"});
 }
 
+static void DumpShutdownCheckpoints() {
+    const bool shutdown_checkpoints_dumped = AddDumps(
+        ds.shutdown_checkpoints_.begin(), ds.shutdown_checkpoints_.end(),
+        "SHUTDOWN CHECKPOINTS", false /* add_to_zip */);
+    if (!shutdown_checkpoints_dumped) {
+        printf("*** NO SHUTDOWN CHECKPOINTS to dump in %s\n\n",
+            SHUTDOWN_CHECKPOINTS_DIR.c_str());
+    }
+}
+
 static void DumpDynamicPartitionInfo() {
     if (!::android::base::GetBoolProperty("ro.boot.dynamic_partitions", false)) {
         return;
@@ -1701,6 +1713,8 @@
 
     DoKmsg();
 
+    DumpShutdownCheckpoints();
+
     DumpIpAddrAndRules();
 
     dump_route_tables();
@@ -1855,6 +1869,8 @@
     if (!PropertiesHelper::IsDryRun()) {
         ds.tombstone_data_ = GetDumpFds(TOMBSTONE_DIR, TOMBSTONE_FILE_PREFIX);
         ds.anr_data_ = GetDumpFds(ANR_DIR, ANR_FILE_PREFIX);
+        ds.shutdown_checkpoints_ = GetDumpFds(
+            SHUTDOWN_CHECKPOINTS_DIR, SHUTDOWN_CHECKPOINTS_FILE_PREFIX);
     }
 
     ds.AddDir(RECOVERY_DIR, true);
@@ -2907,6 +2923,7 @@
     }
     tombstone_data_.clear();
     anr_data_.clear();
+    shutdown_checkpoints_.clear();
 
     // Instead of shutdown the pool, we delete temporary files directly since
     // shutdown blocking the call.
@@ -3190,6 +3207,7 @@
 
     tombstone_data_.clear();
     anr_data_.clear();
+    shutdown_checkpoints_.clear();
 
     return (consent_callback_ != nullptr &&
             consent_callback_->getResult() == UserConsentResult::UNAVAILABLE)
diff --git a/cmds/dumpstate/dumpstate.h b/cmds/dumpstate/dumpstate.h
index 66f84cb..7ffe80e 100644
--- a/cmds/dumpstate/dumpstate.h
+++ b/cmds/dumpstate/dumpstate.h
@@ -499,6 +499,9 @@
     // List of open ANR dump files.
     std::vector<DumpData> anr_data_;
 
+    // List of open shutdown checkpoint files.
+    std::vector<DumpData> shutdown_checkpoints_;
+
     // A thread pool to execute dump tasks simultaneously if the parallel run is enabled.
     std::unique_ptr<android::os::dumpstate::DumpPool> dump_pool_;
 
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index faf67fd..b1283eb 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -99,6 +99,8 @@
 
 static constexpr const char* kDataMirrorCePath = "/data_mirror/data_ce";
 static constexpr const char* kDataMirrorDePath = "/data_mirror/data_de";
+static constexpr const char* kMiscMirrorCePath = "/data_mirror/misc_ce";
+static constexpr const char* kMiscMirrorDePath = "/data_mirror/misc_de";
 
 static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M
 
@@ -3558,16 +3560,28 @@
 
     std::string mirrorVolCePath(StringPrintf("%s/%s", kDataMirrorCePath, uuid_));
     if (fs_prepare_dir(mirrorVolCePath.c_str(), 0711, AID_SYSTEM, AID_SYSTEM) != 0) {
-        return error("Failed to create CE mirror");
+        return error("Failed to create CE data mirror");
     }
 
     std::string mirrorVolDePath(StringPrintf("%s/%s", kDataMirrorDePath, uuid_));
     if (fs_prepare_dir(mirrorVolDePath.c_str(), 0711, AID_SYSTEM, AID_SYSTEM) != 0) {
-        return error("Failed to create DE mirror");
+        return error("Failed to create DE data mirror");
+    }
+
+    std::string mirrorVolMiscCePath(StringPrintf("%s/%s", kMiscMirrorCePath, uuid_));
+    if (fs_prepare_dir(mirrorVolMiscCePath.c_str(), 0711, AID_SYSTEM, AID_SYSTEM) != 0) {
+        return error("Failed to create CE misc mirror");
+    }
+
+    std::string mirrorVolMiscDePath(StringPrintf("%s/%s", kMiscMirrorDePath, uuid_));
+    if (fs_prepare_dir(mirrorVolMiscDePath.c_str(), 0711, AID_SYSTEM, AID_SYSTEM) != 0) {
+        return error("Failed to create DE misc mirror");
     }
 
     auto cePath = StringPrintf("%s/user", create_data_path(uuid_).c_str());
     auto dePath = StringPrintf("%s/user_de", create_data_path(uuid_).c_str());
+    auto miscCePath = StringPrintf("%s/misc_ce", create_data_path(uuid_).c_str());
+    auto miscDePath = StringPrintf("%s/misc_de", create_data_path(uuid_).c_str());
 
     if (access(cePath.c_str(), F_OK) != 0) {
         return error("Cannot access CE path: " + cePath);
@@ -3575,6 +3589,12 @@
     if (access(dePath.c_str(), F_OK) != 0) {
         return error("Cannot access DE path: " + dePath);
     }
+    if (access(miscCePath.c_str(), F_OK) != 0) {
+        return error("Cannot access misc CE path: " + cePath);
+    }
+    if (access(miscDePath.c_str(), F_OK) != 0) {
+        return error("Cannot access misc DE path: " + dePath);
+    }
 
     struct stat ceStat, mirrorCeStat;
     if (stat(cePath.c_str(), &ceStat) != 0) {
@@ -3602,6 +3622,21 @@
             MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC, nullptr)) == -1) {
         return error("Failed to mount " + mirrorVolDePath);
     }
+
+    // Mount misc CE mirror
+    if (TEMP_FAILURE_RETRY(mount(miscCePath.c_str(), mirrorVolMiscCePath.c_str(), NULL,
+                                 MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC,
+                                 nullptr)) == -1) {
+        return error("Failed to mount " + mirrorVolMiscCePath);
+    }
+
+    // Mount misc DE mirror
+    if (TEMP_FAILURE_RETRY(mount(miscDePath.c_str(), mirrorVolMiscDePath.c_str(), NULL,
+                                 MS_NOSUID | MS_NODEV | MS_NOATIME | MS_BIND | MS_NOEXEC,
+                                 nullptr)) == -1) {
+        return error("Failed to mount " + mirrorVolMiscDePath);
+    }
+
     return ok();
 }
 
@@ -3624,6 +3659,8 @@
 
     std::string mirrorCeVolPath(StringPrintf("%s/%s", kDataMirrorCePath, uuid_));
     std::string mirrorDeVolPath(StringPrintf("%s/%s", kDataMirrorDePath, uuid_));
+    std::string mirrorMiscCeVolPath(StringPrintf("%s/%s", kMiscMirrorCePath, uuid_));
+    std::string mirrorMiscDeVolPath(StringPrintf("%s/%s", kMiscMirrorDePath, uuid_));
 
     std::lock_guard<std::recursive_mutex> lock(mMountsLock);
 
@@ -3648,6 +3685,29 @@
     if (delete_dir_contents_and_dir(mirrorDeVolPath, true) != 0) {
         res = error("Failed to delete " + mirrorDeVolPath);
     }
+
+    // Unmount misc CE storage
+    if (TEMP_FAILURE_RETRY(umount(mirrorMiscCeVolPath.c_str())) != 0) {
+        if (errno != ENOENT) {
+            res = error(StringPrintf("Failed to umount %s %s", mirrorMiscCeVolPath.c_str(),
+                                     strerror(errno)));
+        }
+    }
+    if (delete_dir_contents_and_dir(mirrorMiscCeVolPath, true) != 0) {
+        res = error("Failed to delete " + mirrorMiscCeVolPath);
+    }
+
+    // Unmount misc DE storage
+    if (TEMP_FAILURE_RETRY(umount(mirrorMiscDeVolPath.c_str())) != 0) {
+        if (errno != ENOENT) {
+            res = error(StringPrintf("Failed to umount %s %s", mirrorMiscDeVolPath.c_str(),
+                                     strerror(errno)));
+        }
+    }
+    if (delete_dir_contents_and_dir(mirrorMiscDeVolPath, true) != 0) {
+        res = error("Failed to delete " + mirrorMiscDeVolPath);
+    }
+
     return res;
 }
 
diff --git a/cmds/servicemanager/Android.bp b/cmds/servicemanager/Android.bp
index 61f931e..1386660 100644
--- a/cmds/servicemanager/Android.bp
+++ b/cmds/servicemanager/Android.bp
@@ -48,17 +48,6 @@
 }
 
 cc_binary {
-    name: "servicemanager.microdroid",
-    defaults: ["servicemanager_defaults"],
-    init_rc: ["servicemanager.microdroid.rc"],
-    srcs: ["main.cpp"],
-    bootstrap: true,
-    // Prevent this from being installed when running tests in this directory.
-    // This is okay because microdorid build rule can bundle this anyway.
-    installable: false,
-}
-
-cc_binary {
     name: "servicemanager.recovery",
     stem: "servicemanager",
     recovery: true,
diff --git a/cmds/servicemanager/servicemanager.microdroid.rc b/cmds/servicemanager/servicemanager.microdroid.rc
deleted file mode 100644
index 8819e1e..0000000
--- a/cmds/servicemanager/servicemanager.microdroid.rc
+++ /dev/null
@@ -1,8 +0,0 @@
-service servicemanager /system/bin/servicemanager.microdroid
-    class core
-    user system
-    group system readproc
-    critical
-    onrestart setprop servicemanager.ready false
-    onrestart restart apexd
-    shutdown critical
diff --git a/include/android/choreographer.h b/include/android/choreographer.h
index 63aa7ff..cd8e63d 100644
--- a/include/android/choreographer.h
+++ b/include/android/choreographer.h
@@ -16,6 +16,28 @@
 
 /**
  * @addtogroup Choreographer
+ *
+ * Choreographer coordinates the timing of frame rendering. This is the C version of the
+ * android.view.Choreographer object in Java.
+ *
+ * As of API level 33, apps can follow proper frame pacing and even choose a future frame to render.
+ * The API is used as follows:
+ * 1. The app posts an {@link AChoreographer_vsyncCallback} to Choreographer to run on the next
+ * frame.
+ * 2. The callback is called when it is the time to start the frame with an {@link
+ * AChoreographerFrameCallbackData} payload: information about multiple possible frame
+ * timelines.
+ * 3. Apps can choose a frame timeline from the {@link
+ * AChoreographerFrameCallbackData} payload, depending on the frame deadline they can meet when
+ * rendering the frame and their desired presentation time, and subsequently
+ * {@link ASurfaceTransaction_setFrameTimeline notify SurfaceFlinger}
+ * of the choice. Alternatively, for apps that do not choose a frame timeline, their frame would be
+ * presented at the earliest possible timeline.
+ *   - The preferred frame timeline is the default frame
+ * timeline that the platform scheduled for the app, based on device configuration.
+ * 4. SurfaceFlinger attempts to follow the chosen frame timeline, by not applying transactions or
+ * latching buffers before the desired presentation time.
+ *
  * @{
  */
 
@@ -47,7 +69,8 @@
 
 struct AChoreographerFrameCallbackData;
 /**
- * Opaque type that provides access to an AChoreographerFrameCallbackData object.
+ * Opaque type that provides access to an AChoreographerFrameCallbackData object, which contains
+ * various methods to extract frame information.
  */
 typedef struct AChoreographerFrameCallbackData AChoreographerFrameCallbackData;
 
@@ -73,8 +96,9 @@
 
 /**
  * Prototype of the function that is called when a new frame is being rendered.
- * It's passed the frame data that should not outlive the callback, as well as the data pointer
- * provided by the application that registered a callback.
+ * It is called with \c callbackData describing multiple frame timelines, as well as the \c data
+ * pointer provided by the application that registered a callback. The \c callbackData does not
+ * outlive the callback.
  */
 typedef void (*AChoreographer_vsyncCallback)(
         const AChoreographerFrameCallbackData* callbackData, void* data);
@@ -110,7 +134,7 @@
         __DEPRECATED_IN(29);
 
 /**
- * Power a callback to be run on the next frame.  The data pointer provided will
+ * Post a callback to be run on the next frame.  The data pointer provided will
  * be passed to the callback function when it's called.
  *
  * Available since API level 29.
@@ -131,8 +155,10 @@
                                                uint32_t delayMillis) __INTRODUCED_IN(29);
 
 /**
- * Posts a callback to run on the next frame. The data pointer provided will
+ * Posts a callback to be run on the next frame. The data pointer provided will
  * be passed to the callback function when it's called.
+ *
+ * Available since API level 33.
  */
 void AChoreographer_postVsyncCallback(AChoreographer* choreographer,
                                         AChoreographer_vsyncCallback callback, void* data)
@@ -189,7 +215,10 @@
         __INTRODUCED_IN(30);
 
 /**
- * The time in nanoseconds when the frame started being rendered.
+ * The time in nanoseconds at which the frame started being rendered.
+ *
+ * Note that this time should \b not be used to advance animation clocks.
+ * Instead, see AChoreographerFrameCallbackData_getFrameTimelineExpectedPresentationTimeNanos().
  */
 int64_t AChoreographerFrameCallbackData_getFrameTimeNanos(
         const AChoreographerFrameCallbackData* data) __INTRODUCED_IN(33);
@@ -201,25 +230,38 @@
         const AChoreographerFrameCallbackData* data) __INTRODUCED_IN(33);
 
 /**
- * Get index of the platform-preferred FrameTimeline.
+ * Gets the index of the platform-preferred frame timeline.
+ * The preferred frame timeline is the default
+ * by which the platform scheduled the app, based on the device configuration.
  */
 size_t AChoreographerFrameCallbackData_getPreferredFrameTimelineIndex(
         const AChoreographerFrameCallbackData* data) __INTRODUCED_IN(33);
 
 /**
- * The vsync ID token used to map Choreographer data.
+ * Gets the token used by the platform to identify the frame timeline at the given \c index.
+ *
+ * \param index index of a frame timeline, in \f( [0, FrameTimelinesLength) \f). See
+ * AChoreographerFrameCallbackData_getFrameTimelinesLength()
  */
 AVsyncId AChoreographerFrameCallbackData_getFrameTimelineVsyncId(
         const AChoreographerFrameCallbackData* data, size_t index) __INTRODUCED_IN(33);
 
 /**
- * The time in nanoseconds which the frame at given index is expected to be presented.
+ * Gets the time in nanoseconds at which the frame described at the given \c index is expected to
+ * be presented. This time should be used to advance any animation clocks.
+ *
+ * \param index index of a frame timeline, in \f( [0, FrameTimelinesLength) \f). See
+ * AChoreographerFrameCallbackData_getFrameTimelinesLength()
  */
 int64_t AChoreographerFrameCallbackData_getFrameTimelineExpectedPresentationTimeNanos(
         const AChoreographerFrameCallbackData* data, size_t index) __INTRODUCED_IN(33);
 
 /**
- * The time in nanoseconds which the frame at given index needs to be ready by.
+ * Gets the time in nanoseconds at which the frame described at the given \c index needs to be
+ * ready by in order to be presented on time.
+ *
+ * \param index index of a frame timeline, in \f( [0, FrameTimelinesLength) \f). See
+ * AChoreographerFrameCallbackData_getFrameTimelinesLength()
  */
 int64_t AChoreographerFrameCallbackData_getFrameTimelineDeadlineNanos(
         const AChoreographerFrameCallbackData* data, size_t index) __INTRODUCED_IN(33);
diff --git a/include/android/sensor.h b/include/android/sensor.h
index eef69f4..ba81bc8 100644
--- a/include/android/sensor.h
+++ b/include/android/sensor.h
@@ -596,12 +596,15 @@
     float accuracy;
 } AHeadingEvent;
 
+// LINT.IfChange
 /**
  * Information that describes a sensor event, refer to
  * <a href="/reference/android/hardware/SensorEvent">SensorEvent</a> for additional
  * documentation.
+ *
+ * NOTE: changes to this struct has to be backward compatible and reflected in
+ * sensors_event_t
  */
-/* NOTE: changes to this struct has to be backward compatible */
 typedef struct ASensorEvent {
     int32_t version; /* sizeof(struct ASensorEvent) */
     int32_t sensor;  /** The sensor that generates this event */
@@ -646,6 +649,7 @@
     uint32_t flags;
     int32_t reserved1[3];
 } ASensorEvent;
+// LINT.ThenChange (hardware/libhardware/include/hardware/sensors.h)
 
 struct ASensorManager;
 /**
diff --git a/include/android/surface_control.h b/include/android/surface_control.h
index 9a36ecb..6223ef7 100644
--- a/include/android/surface_control.h
+++ b/include/android/surface_control.h
@@ -597,20 +597,20 @@
                                                __INTRODUCED_IN(31);
 
 /**
- * Sets the frame timeline to use in Surface Flinger.
+ * Sets the frame timeline to use in SurfaceFlinger.
  *
- * A frame timeline should be chosen based on what frame deadline the application
- * can meet when rendering the frame and the application's desired present time.
- * By setting a frame timeline, Surface Flinger tries to present the frame at the corresponding
- * expected present time.
+ * A frame timeline should be chosen based on the frame deadline the application
+ * can meet when rendering the frame and the application's desired presentation time.
+ * By setting a frame timeline, SurfaceFlinger tries to present the frame at the corresponding
+ * expected presentation time.
  *
  * To receive frame timelines, a callback must be posted to Choreographer using
- * AChoreographer_postExtendedFrameCallback(). The \a vsnycId can then be extracted from the
+ * AChoreographer_postVsyncCallback(). The \c vsyncId can then be extracted from the
  * callback payload using AChoreographerFrameCallbackData_getFrameTimelineVsyncId().
  *
- * \param vsyncId The vsync ID received from AChoreographer, setting the frame's present target to
- * the corresponding expected present time and deadline from the frame to be rendered. A stale or
- * invalid value will be ignored.
+ * \param vsyncId The vsync ID received from AChoreographer, setting the frame's presentation target
+ * to the corresponding expected presentation time and deadline from the frame to be rendered. A
+ * stale or invalid value will be ignored.
  */
 void ASurfaceTransaction_setFrameTimeline(ASurfaceTransaction* transaction,
                                           AVsyncId vsyncId) __INTRODUCED_IN(33);
diff --git a/include/input/Input.h b/include/input/Input.h
index e7d68fc..7ea2970 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -297,6 +297,8 @@
  */
 const char* motionClassificationToString(MotionClassification classification);
 
+const char* motionToolTypeToString(int32_t toolType);
+
 /**
  * Portion of FrameMetrics timeline of interest to input code.
  */
diff --git a/include/input/PrintTools.h b/include/input/PrintTools.h
index 0a75278..55f730b 100644
--- a/include/input/PrintTools.h
+++ b/include/input/PrintTools.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <map>
+#include <optional>
 #include <set>
 #include <string>
 
@@ -28,6 +29,15 @@
 }
 
 /**
+ * Convert an optional type to string.
+ */
+template <typename T>
+std::string toString(const std::optional<T>& optional,
+                     std::string (*toString)(const T&) = constToString) {
+    return optional ? toString(*optional) : "<not set>";
+}
+
+/**
  * Convert a set of integral types to string.
  */
 template <typename T>
diff --git a/libs/arect/include/android/rect.h b/libs/arect/include/android/rect.h
index b36728e..d52861a 100644
--- a/libs/arect/include/android/rect.h
+++ b/libs/arect/include/android/rect.h
@@ -57,7 +57,7 @@
 } ARect;
 
 #ifdef __cplusplus
-};
+}
 #endif
 
 #endif // ANDROID_RECT_H
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index aa20dc0..6d64e1e 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -45,11 +45,11 @@
 
 #define IF_LOG_TRANSACTIONS() if (false)
 #define IF_LOG_COMMANDS() if (false)
-#define LOG_REMOTEREFS(...) 
+#define LOG_REMOTEREFS(...)
 #define IF_LOG_REMOTEREFS() if (false)
 
-#define LOG_THREADPOOL(...) 
-#define LOG_ONEWAY(...) 
+#define LOG_THREADPOOL(...)
+#define LOG_ONEWAY(...)
 
 #else
 
@@ -408,14 +408,92 @@
     // context, so we don't abort
 }
 
+constexpr uint32_t encodeExplicitIdentity(bool hasExplicitIdentity, pid_t callingPid) {
+    uint32_t as_unsigned = static_cast<uint32_t>(callingPid);
+    if (hasExplicitIdentity) {
+        return as_unsigned | (1 << 30);
+    } else {
+        return as_unsigned & ~(1 << 30);
+    }
+}
+
+constexpr int64_t packCallingIdentity(bool hasExplicitIdentity, uid_t callingUid,
+                                      pid_t callingPid) {
+    // Calling PID is a 32-bit signed integer, but doesn't consume the entire 32 bit space.
+    // To future-proof this and because we have extra capacity, we decided to also support -1,
+    // since this constant is used to represent invalid UID in other places of the system.
+    // Thus, we pack hasExplicitIdentity into the 2nd bit from the left.  This allows us to
+    // preserve the (left-most) bit for the sign while also encoding the value of
+    // hasExplicitIdentity.
+    //               32b     |        1b         |         1b            |        30b
+    // token = [ calling uid | calling pid(sign) | has explicit identity | calling pid(rest) ]
+    uint64_t token = (static_cast<uint64_t>(callingUid) << 32) |
+            encodeExplicitIdentity(hasExplicitIdentity, callingPid);
+    return static_cast<int64_t>(token);
+}
+
+constexpr bool unpackHasExplicitIdentity(int64_t token) {
+    return static_cast<int32_t>(token) & (1 << 30);
+}
+
+constexpr uid_t unpackCallingUid(int64_t token) {
+    return static_cast<uid_t>(token >> 32);
+}
+
+constexpr pid_t unpackCallingPid(int64_t token) {
+    int32_t encodedPid = static_cast<int32_t>(token);
+    if (encodedPid & (1 << 31)) {
+        return encodedPid | (1 << 30);
+    } else {
+        return encodedPid & ~(1 << 30);
+    }
+}
+
+static_assert(unpackHasExplicitIdentity(packCallingIdentity(true, 1000, 9999)) == true,
+              "pack true hasExplicit");
+
+static_assert(unpackCallingUid(packCallingIdentity(true, 1000, 9999)) == 1000, "pack true uid");
+
+static_assert(unpackCallingPid(packCallingIdentity(true, 1000, 9999)) == 9999, "pack true pid");
+
+static_assert(unpackHasExplicitIdentity(packCallingIdentity(false, 1000, 9999)) == false,
+              "pack false hasExplicit");
+
+static_assert(unpackCallingUid(packCallingIdentity(false, 1000, 9999)) == 1000, "pack false uid");
+
+static_assert(unpackCallingPid(packCallingIdentity(false, 1000, 9999)) == 9999, "pack false pid");
+
+static_assert(unpackHasExplicitIdentity(packCallingIdentity(true, 1000, -1)) == true,
+              "pack true (negative) hasExplicit");
+
+static_assert(unpackCallingUid(packCallingIdentity(true, 1000, -1)) == 1000,
+              "pack true (negative) uid");
+
+static_assert(unpackCallingPid(packCallingIdentity(true, 1000, -1)) == -1,
+              "pack true (negative) pid");
+
+static_assert(unpackHasExplicitIdentity(packCallingIdentity(false, 1000, -1)) == false,
+              "pack false (negative) hasExplicit");
+
+static_assert(unpackCallingUid(packCallingIdentity(false, 1000, -1)) == 1000,
+              "pack false (negative) uid");
+
+static_assert(unpackCallingPid(packCallingIdentity(false, 1000, -1)) == -1,
+              "pack false (negative) pid");
+
 int64_t IPCThreadState::clearCallingIdentity()
 {
     // ignore mCallingSid for legacy reasons
-    int64_t token = ((int64_t)mCallingUid<<32) | mCallingPid;
+    int64_t token = packCallingIdentity(mHasExplicitIdentity, mCallingUid, mCallingPid);
     clearCaller();
+    mHasExplicitIdentity = true;
     return token;
 }
 
+bool IPCThreadState::hasExplicitIdentity() {
+    return mHasExplicitIdentity;
+}
+
 void IPCThreadState::setStrictModePolicy(int32_t policy)
 {
     mStrictModePolicy = policy;
@@ -488,9 +566,10 @@
 
 void IPCThreadState::restoreCallingIdentity(int64_t token)
 {
-    mCallingUid = (int)(token>>32);
+    mCallingUid = unpackCallingUid(token);
     mCallingSid = nullptr;  // not enough data to restore
-    mCallingPid = (int)token;
+    mCallingPid = unpackCallingPid(token);
+    mHasExplicitIdentity = unpackHasExplicitIdentity(token);
 }
 
 void IPCThreadState::clearCaller()
@@ -903,6 +982,7 @@
         mCallRestriction(mProcess->mCallRestriction) {
     pthread_setspecific(gTLS, this);
     clearCaller();
+    mHasExplicitIdentity = false;
     mIn.setDataCapacity(256);
     mOut.setDataCapacity(256);
 }
@@ -951,6 +1031,10 @@
             if (!reply && !acquireResult) goto finish;
             break;
 
+        case BR_TRANSACTION_PENDING_FROZEN:
+            ALOGW("Sending oneway calls to frozen process.");
+            goto finish;
+
         case BR_DEAD_REPLY:
             err = DEAD_OBJECT;
             goto finish;
@@ -1293,6 +1377,7 @@
             const pid_t origPid = mCallingPid;
             const char* origSid = mCallingSid;
             const uid_t origUid = mCallingUid;
+            const bool origHasExplicitIdentity = mHasExplicitIdentity;
             const int32_t origStrictModePolicy = mStrictModePolicy;
             const int32_t origTransactionBinderFlags = mLastTransactionBinderFlags;
             const int32_t origWorkSource = mWorkSource;
@@ -1306,6 +1391,7 @@
             mCallingPid = tr.sender_pid;
             mCallingSid = reinterpret_cast<const char*>(tr_secctx.secctx);
             mCallingUid = tr.sender_euid;
+            mHasExplicitIdentity = false;
             mLastTransactionBinderFlags = tr.flags;
 
             // ALOGI(">>>> TRANSACT from pid %d sid %s uid %d\n", mCallingPid,
@@ -1381,6 +1467,7 @@
             mCallingPid = origPid;
             mCallingSid = origSid;
             mCallingUid = origUid;
+            mHasExplicitIdentity = origHasExplicitIdentity;
             mStrictModePolicy = origStrictModePolicy;
             mLastTransactionBinderFlags = origTransactionBinderFlags;
             mWorkSource = origWorkSource;
diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index a0c4334..2408307 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -444,7 +444,7 @@
     bool declared;
     if (Status status = mTheRealServiceManager->isDeclared(String8(name).c_str(), &declared);
         !status.isOk()) {
-        ALOGW("Failed to get isDeclard for %s: %s", String8(name).c_str(),
+        ALOGW("Failed to get isDeclared for %s: %s", String8(name).c_str(),
               status.toString8().c_str());
         return false;
     }
diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 07d0a65..ee081c4 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -614,11 +614,14 @@
                 if (status_t status = readInt32(&fdIndex); status != OK) {
                     return status;
                 }
-                const auto& oldFd = otherRpcFields->mFds->at(fdIndex);
+                int oldFd = toRawFd(otherRpcFields->mFds->at(fdIndex));
                 // To match kernel binder behavior, we always dup, even if the
                 // FD was unowned in the source parcel.
-                rpcFields->mFds->emplace_back(
-                        base::unique_fd(fcntl(toRawFd(oldFd), F_DUPFD_CLOEXEC, 0)));
+                int newFd = -1;
+                if (status_t status = dupFileDescriptor(oldFd, &newFd); status != OK) {
+                    ALOGW("Failed to duplicate file descriptor %d: %s", oldFd, strerror(-status));
+                }
+                rpcFields->mFds->emplace_back(base::unique_fd(newFd));
                 // Fixup the index in the data.
                 mDataPos = newDataPos + 4;
                 if (status_t status = writeInt32(rpcFields->mFds->size() - 1); status != OK) {
@@ -966,7 +969,15 @@
     }
 }
 
+void Parcel::setEnforceNoDataAvail(bool enforceNoDataAvail) {
+    mEnforceNoDataAvail = enforceNoDataAvail;
+}
+
 binder::Status Parcel::enforceNoDataAvail() const {
+    if (!mEnforceNoDataAvail) {
+        return binder::Status::ok();
+    }
+
     const auto n = dataAvail();
     if (n == 0) {
         return binder::Status::ok();
@@ -3077,6 +3088,7 @@
     mAllowFds = true;
     mDeallocZero = false;
     mOwner = nullptr;
+    mEnforceNoDataAvail = true;
 }
 
 void Parcel::scanForFds() const {
diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index 1f311ac..254dda8 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -439,6 +439,10 @@
     return mCurrentThreads;
 }
 
+bool ProcessState::isThreadPoolStarted() const {
+    return mThreadPoolStarted;
+}
+
 #define DRIVER_FEATURES_PATH "/dev/binderfs/features/"
 bool ProcessState::isDriverFeatureEnabled(const DriverFeature feature) {
     static const char* const names[] = {
diff --git a/libs/binder/RpcServer.cpp b/libs/binder/RpcServer.cpp
index 0820cd1..fedc1d9 100644
--- a/libs/binder/RpcServer.cpp
+++ b/libs/binder/RpcServer.cpp
@@ -70,11 +70,8 @@
     return setupSocketServer(UnixSocketAddress(path));
 }
 
-status_t RpcServer::setupVsockServer(unsigned int port) {
-    // realizing value w/ this type at compile time to avoid ubsan abort
-    constexpr unsigned int kAnyCid = VMADDR_CID_ANY;
-
-    return setupSocketServer(VsockSocketAddress(kAnyCid, port));
+status_t RpcServer::setupVsockServer(unsigned int bindCid, unsigned int port) {
+    return setupSocketServer(VsockSocketAddress(bindCid, port));
 }
 
 status_t RpcServer::setupInetServer(const char* address, unsigned int port,
@@ -157,6 +154,12 @@
     mRootObjectFactory = std::move(makeObject);
 }
 
+void RpcServer::setConnectionFilter(std::function<bool(const void*, size_t)>&& filter) {
+    RpcMutexLockGuard _l(mLock);
+    LOG_ALWAYS_FATAL_IF(mShutdownTrigger != nullptr, "Already joined");
+    mConnectionFilter = std::move(filter);
+}
+
 sp<IBinder> RpcServer::getRootObject() {
     RpcMutexLockGuard _l(mLock);
     bool hasWeak = mRootObjectWeak.unsafe_get();
@@ -242,13 +245,19 @@
         if (mAcceptFn(*this, &clientSocket) != OK) {
             continue;
         }
+
+        LOG_RPC_DETAIL("accept on fd %d yields fd %d", mServer.fd.get(), clientSocket.fd.get());
+
         if (getpeername(clientSocket.fd.get(), reinterpret_cast<sockaddr*>(addr.data()),
                         &addrLen)) {
             ALOGE("Could not getpeername socket: %s", strerror(errno));
             continue;
         }
 
-        LOG_RPC_DETAIL("accept on fd %d yields fd %d", mServer.fd.get(), clientSocket.fd.get());
+        if (mConnectionFilter != nullptr && !mConnectionFilter(addr.data(), addrLen)) {
+            ALOGE("Dropped client connection fd %d", clientSocket.fd.get());
+            continue;
+        }
 
         {
             RpcMutexLockGuard _l(mLock);
diff --git a/libs/binder/RpcTransportTipcAndroid.cpp b/libs/binder/RpcTransportTipcAndroid.cpp
index 453279c..8b3ddfb 100644
--- a/libs/binder/RpcTransportTipcAndroid.cpp
+++ b/libs/binder/RpcTransportTipcAndroid.cpp
@@ -63,12 +63,14 @@
         if (pfd.revents & POLLERR) {
             return DEAD_OBJECT;
         }
+        if (pfd.revents & POLLIN) {
+            // Copied from FdTrigger.cpp: Even though POLLHUP may also be set,
+            // treat it as a success condition to ensure data is drained.
+            return OK;
+        }
         if (pfd.revents & POLLHUP) {
             return DEAD_OBJECT;
         }
-        if (pfd.revents & POLLIN) {
-            return OK;
-        }
 
         return WOULD_BLOCK;
     }
diff --git a/libs/binder/binder_module.h b/libs/binder/binder_module.h
index 793795e..eef07ae 100644
--- a/libs/binder/binder_module.h
+++ b/libs/binder/binder_module.h
@@ -100,4 +100,9 @@
 #define BINDER_ENABLE_ONEWAY_SPAM_DETECTION _IOW('b', 16, __u32)
 #endif // BINDER_ENABLE_ONEWAY_SPAM_DETECTION
 
+#ifndef BR_TRANSACTION_PENDING_FROZEN
+// Temporary definition of BR_TRANSACTION_PENDING_FROZEN until UAPI binder.h includes it.
+#define BR_TRANSACTION_PENDING_FROZEN _IO('r', 20)
+#endif // BR_TRANSACTION_PENDING_FROZEN
+
 #endif // _BINDER_MODULE_H_
diff --git a/libs/binder/include/binder/IPCThreadState.h b/libs/binder/include/binder/IPCThreadState.h
index c01e92f..d261c21 100644
--- a/libs/binder/include/binder/IPCThreadState.h
+++ b/libs/binder/include/binder/IPCThreadState.h
@@ -139,12 +139,15 @@
             int64_t             clearCallingIdentity();
             // Restores PID/UID (not SID)
             void                restoreCallingIdentity(int64_t token);
+            bool hasExplicitIdentity();
 
+            // For main functions - dangerous for libraries to use
             status_t            setupPolling(int* fd);
             status_t            handlePolledCommands();
             void                flushCommands();
             bool                flushIfNeeded();
 
+            // For main functions - dangerous for libraries to use
             void                joinThreadPool(bool isMain = true);
             
             // Stop the local process.
@@ -241,6 +244,7 @@
             bool                mPropagateWorkSource;
             bool                mIsLooper;
             bool mIsFlushing;
+            bool mHasExplicitIdentity;
             int32_t             mStrictModePolicy;
             int32_t             mLastTransactionBinderFlags;
             CallRestriction     mCallRestriction;
diff --git a/libs/binder/include/binder/IServiceManager.h b/libs/binder/include/binder/IServiceManager.h
index 79e771f..2af512e 100644
--- a/libs/binder/include/binder/IServiceManager.h
+++ b/libs/binder/include/binder/IServiceManager.h
@@ -67,7 +67,8 @@
      * a system property, or in the case of services in the VINTF manifest, it can be checked
      * with isDeclared).
      */
-    virtual sp<IBinder>         getService( const String16& name) const = 0;
+    [[deprecated("this polls for 5s, prefer waitForService or checkService")]]
+    virtual sp<IBinder> getService(const String16& name) const = 0;
 
     /**
      * Retrieve an existing service, non-blocking.
diff --git a/libs/binder/include/binder/Parcel.h b/libs/binder/include/binder/Parcel.h
index 6de6ce8..f730acb 100644
--- a/libs/binder/include/binder/Parcel.h
+++ b/libs/binder/include/binder/Parcel.h
@@ -150,6 +150,9 @@
     // Returns Status(EX_BAD_PARCELABLE) when the Parcel is not consumed.
     binder::Status enforceNoDataAvail() const;
 
+    // This Api is used by fuzzers to skip dataAvail checks.
+    void setEnforceNoDataAvail(bool enforceNoDataAvail);
+
     void                freeData();
 
     size_t              objectsCount() const;
@@ -1329,6 +1332,9 @@
     // data to be overridden with zero when deallocated
     mutable bool        mDeallocZero;
 
+    // Set this to false to skip dataAvail checks.
+    bool mEnforceNoDataAvail;
+
     release_func        mOwner;
 
     size_t mReserved;
diff --git a/libs/binder/include/binder/ProcessState.h b/libs/binder/include/binder/ProcessState.h
index 9679a5f..bad8cb1 100644
--- a/libs/binder/include/binder/ProcessState.h
+++ b/libs/binder/include/binder/ProcessState.h
@@ -50,6 +50,7 @@
 
     sp<IBinder> getContextObject(const sp<IBinder>& caller);
 
+    // For main functions - dangerous for libraries to use
     void startThreadPool();
 
     bool becomeContextManager();
@@ -57,8 +58,10 @@
     sp<IBinder> getStrongProxyForHandle(int32_t handle);
     void expungeHandle(int32_t handle, IBinder* binder);
 
+    // TODO: deprecate.
     void spawnPooledThread(bool isMain);
 
+    // For main functions - dangerous for libraries to use
     status_t setThreadPoolMaxThreadCount(size_t maxThreads);
     status_t enableOnewaySpamDetection(bool enable);
     void giveThreadPoolName();
@@ -94,6 +97,11 @@
      */
     size_t getThreadPoolMaxTotalThreadCount() const;
 
+    /**
+     * Check to see if the thread pool has started.
+     */
+    bool isThreadPoolStarted() const;
+
     enum class DriverFeature {
         ONEWAY_SPAM_DETECTION,
         EXTENDED_ERROR,
diff --git a/libs/binder/include/binder/RpcServer.h b/libs/binder/include/binder/RpcServer.h
index 4ad0a47..25193a3 100644
--- a/libs/binder/include/binder/RpcServer.h
+++ b/libs/binder/include/binder/RpcServer.h
@@ -81,9 +81,9 @@
     [[nodiscard]] status_t setupRawSocketServer(base::unique_fd socket_fd);
 
     /**
-     * Creates an RPC server at the current port.
+     * Creates an RPC server binding to the given CID at the given port.
      */
-    [[nodiscard]] status_t setupVsockServer(unsigned int port);
+    [[nodiscard]] status_t setupVsockServer(unsigned int bindCid, unsigned int port);
 
     /**
      * Creates an RPC server at the current port using IPv4.
@@ -171,6 +171,16 @@
     sp<IBinder> getRootObject();
 
     /**
+     * Set optional filter of incoming connections based on the peer's address.
+     *
+     * Takes one argument: a callable that is invoked on each accept()-ed
+     * connection and returns false if the connection should be dropped.
+     * See the description of setPerSessionRootObject() for details about
+     * the callable's arguments.
+     */
+    void setConnectionFilter(std::function<bool(const void*, size_t)>&& filter);
+
+    /**
      * See RpcTransportCtx::getCertificate
      */
     std::vector<uint8_t> getCertificate(RpcCertificateFormat);
@@ -253,6 +263,7 @@
     sp<IBinder> mRootObject;
     wp<IBinder> mRootObjectWeak;
     std::function<sp<IBinder>(const void*, size_t)> mRootObjectFactory;
+    std::function<bool(const void*, size_t)> mConnectionFilter;
     std::map<std::vector<uint8_t>, sp<RpcSession>> mSessions;
     std::unique_ptr<FdTrigger> mShutdownTrigger;
     RpcConditionVariable mShutdownCv;
diff --git a/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp b/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp
index dd177af..3ec049e 100644
--- a/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp
+++ b/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp
@@ -17,20 +17,45 @@
 #pragma once
 
 #include <sys/socket.h>
+#include <stdint.h>
 
 extern "C" {
 
 struct AIBinder;
+struct ARpcServer;
 
 // Starts an RPC server on a given port and a given root IBinder object.
-// This function sets up the server and joins before returning.
-bool RunVsockRpcServer(AIBinder* service, unsigned int port);
+// The server will only accept connections from the given CID.
+// Set `cid` to VMADDR_CID_ANY to accept connections from any client.
+// Set `cid` to VMADDR_CID_LOCAL to only bind to the local vsock interface.
+// Returns an opaque handle to the running server instance, or null if the server
+// could not be started.
+[[nodiscard]] ARpcServer* ARpcServer_newVsock(AIBinder* service, unsigned int cid,
+                                              unsigned int port);
 
-// Starts an RPC server on a given port and a given root IBinder object.
-// This function sets up the server, calls readyCallback with a given param, and
-// then joins before returning.
-bool RunVsockRpcServerCallback(AIBinder* service, unsigned int port,
-                               void (*readyCallback)(void* param), void* param);
+// Starts a Unix domain RPC server with a given init-managed Unix domain `name`
+// and a given root IBinder object.
+// The socket should be created in init.rc with the same `name`.
+// Returns an opaque handle to the running server instance, or null if the server
+// could not be started.
+[[nodiscard]] ARpcServer* ARpcServer_newInitUnixDomain(AIBinder* service, const char* name);
+
+// Runs ARpcServer_join() in a background thread. Immediately returns.
+void ARpcServer_start(ARpcServer* server);
+
+// Joins the thread of a running RpcServer instance. At any given point, there
+// can only be one thread calling ARpcServer_join().
+// If a client needs to actively terminate join, call ARpcServer_shutdown() in
+// a separate thread.
+void ARpcServer_join(ARpcServer* server);
+
+// Shuts down any running ARpcServer_join().
+void ARpcServer_shutdown(ARpcServer* server);
+
+// Frees the ARpcServer handle and drops the reference count on the underlying
+// RpcServer instance. The handle must not be reused afterwards.
+// This automatically calls ARpcServer_shutdown().
+void ARpcServer_free(ARpcServer* server);
 
 // Starts an RPC server on a given port and a given root IBinder factory.
 // RunVsockRpcServerWithFactory acts like RunVsockRpcServerCallback, but instead of
@@ -42,15 +67,6 @@
 
 AIBinder* VsockRpcClient(unsigned int cid, unsigned int port);
 
-// Starts a Unix domain RPC server with a given init-managed Unix domain `name` and
-// a given root IBinder object.
-// The socket should be created in init.rc with the same `name`.
-//
-// This function sets up the server, calls readyCallback with a given param, and
-// then joins before returning.
-bool RunInitUnixDomainRpcServer(AIBinder* service, const char* name,
-                                void (*readyCallback)(void* param), void* param);
-
 // Gets the service via the RPC binder with Unix domain socket with the given
 // Unix socket `name`.
 // The final Unix domain socket path name is /dev/socket/`name`.
diff --git a/libs/binder/libbinder_rpc_unstable.cpp b/libs/binder/libbinder_rpc_unstable.cpp
index 9edb3b6..88f8c94 100644
--- a/libs/binder/libbinder_rpc_unstable.cpp
+++ b/libs/binder/libbinder_rpc_unstable.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <binder_rpc_unstable.hpp>
+
 #include <android-base/logging.h>
 #include <android-base/unique_fd.h>
 #include <android/binder_libbinder.h>
@@ -25,36 +27,50 @@
 using android::OK;
 using android::RpcServer;
 using android::RpcSession;
+using android::sp;
 using android::status_t;
 using android::statusToString;
 using android::base::unique_fd;
 
-extern "C" {
+// Opaque handle for RpcServer.
+struct ARpcServer {};
 
-void RunRpcServer(android::sp<RpcServer>& server, AIBinder* service,
-                  void (*readyCallback)(void* param), void* param) {
-    server->setRootObject(AIBinder_toPlatformBinder(service));
-
-    if (readyCallback) readyCallback(param);
-    server->join();
-
-    // Shutdown any open sessions since server failed.
-    (void)server->shutdown();
+static sp<RpcServer> toRpcServer(ARpcServer* handle) {
+    auto ref = reinterpret_cast<RpcServer*>(handle);
+    return sp<RpcServer>::fromExisting(ref);
 }
 
+static ARpcServer* createRpcServerHandle(sp<RpcServer>& server) {
+    auto ref = server.get();
+    ref->incStrong(ref);
+    return reinterpret_cast<ARpcServer*>(ref);
+}
+
+static void freeRpcServerHandle(ARpcServer* handle) {
+    auto ref = reinterpret_cast<RpcServer*>(handle);
+    ref->decStrong(ref);
+}
+
+static unsigned int cidFromStructAddr(const void* addr, size_t addrlen) {
+    LOG_ALWAYS_FATAL_IF(addrlen < sizeof(sockaddr_vm), "sockaddr is truncated");
+    const sockaddr_vm* vaddr = reinterpret_cast<const sockaddr_vm*>(addr);
+    LOG_ALWAYS_FATAL_IF(vaddr->svm_family != AF_VSOCK, "address is not a vsock");
+    return vaddr->svm_cid;
+}
+
+extern "C" {
+
 bool RunVsockRpcServerWithFactory(AIBinder* (*factory)(unsigned int cid, void* context),
                                   void* factoryContext, unsigned int port) {
     auto server = RpcServer::make();
-    if (status_t status = server->setupVsockServer(port); status != OK) {
+    if (status_t status = server->setupVsockServer(VMADDR_CID_ANY, port); status != OK) {
         LOG(ERROR) << "Failed to set up vsock server with port " << port
                    << " error: " << statusToString(status).c_str();
         return false;
     }
     server->setPerSessionRootObject([=](const void* addr, size_t addrlen) {
-        LOG_ALWAYS_FATAL_IF(addrlen < sizeof(sockaddr_vm), "sockaddr is truncated");
-        const sockaddr_vm* vaddr = reinterpret_cast<const sockaddr_vm*>(addr);
-        LOG_ALWAYS_FATAL_IF(vaddr->svm_family != AF_VSOCK, "address is not a vsock");
-        return AIBinder_toPlatformBinder(factory(vaddr->svm_cid, factoryContext));
+        unsigned int cid = cidFromStructAddr(addr, addrlen);
+        return AIBinder_toPlatformBinder(factory(cid, factoryContext));
     });
 
     server->join();
@@ -64,20 +80,64 @@
     return true;
 }
 
-bool RunVsockRpcServerCallback(AIBinder* service, unsigned int port,
-                               void (*readyCallback)(void* param), void* param) {
+ARpcServer* ARpcServer_newVsock(AIBinder* service, unsigned int cid, unsigned int port) {
     auto server = RpcServer::make();
-    if (status_t status = server->setupVsockServer(port); status != OK) {
+
+    unsigned int bindCid = VMADDR_CID_ANY; // bind to the remote interface
+    if (cid == VMADDR_CID_LOCAL) {
+        bindCid = VMADDR_CID_LOCAL; // bind to the local interface
+        cid = VMADDR_CID_ANY;       // no need for a connection filter
+    }
+
+    if (status_t status = server->setupVsockServer(bindCid, port); status != OK) {
         LOG(ERROR) << "Failed to set up vsock server with port " << port
                    << " error: " << statusToString(status).c_str();
-        return false;
+        return nullptr;
     }
-    RunRpcServer(server, service, readyCallback, param);
-    return true;
+    if (cid != VMADDR_CID_ANY) {
+        server->setConnectionFilter([=](const void* addr, size_t addrlen) {
+            unsigned int remoteCid = cidFromStructAddr(addr, addrlen);
+            if (cid != remoteCid) {
+                LOG(ERROR) << "Rejected vsock connection from CID " << remoteCid;
+                return false;
+            }
+            return true;
+        });
+    }
+    server->setRootObject(AIBinder_toPlatformBinder(service));
+    return createRpcServerHandle(server);
 }
 
-bool RunVsockRpcServer(AIBinder* service, unsigned int port) {
-    return RunVsockRpcServerCallback(service, port, nullptr, nullptr);
+ARpcServer* ARpcServer_newInitUnixDomain(AIBinder* service, const char* name) {
+    auto server = RpcServer::make();
+    auto fd = unique_fd(android_get_control_socket(name));
+    if (!fd.ok()) {
+        LOG(ERROR) << "Failed to get fd for the socket:" << name;
+        return nullptr;
+    }
+    if (status_t status = server->setupRawSocketServer(std::move(fd)); status != OK) {
+        LOG(ERROR) << "Failed to set up Unix Domain RPC server with name " << name
+                   << " error: " << statusToString(status).c_str();
+        return nullptr;
+    }
+    server->setRootObject(AIBinder_toPlatformBinder(service));
+    return createRpcServerHandle(server);
+}
+
+void ARpcServer_start(ARpcServer* handle) {
+    toRpcServer(handle)->start();
+}
+
+void ARpcServer_join(ARpcServer* handle) {
+    toRpcServer(handle)->join();
+}
+
+void ARpcServer_shutdown(ARpcServer* handle) {
+    toRpcServer(handle)->shutdown();
+}
+
+void ARpcServer_free(ARpcServer* handle) {
+    freeRpcServerHandle(handle);
 }
 
 AIBinder* VsockRpcClient(unsigned int cid, unsigned int port) {
@@ -90,23 +150,6 @@
     return AIBinder_fromPlatformBinder(session->getRootObject());
 }
 
-bool RunInitUnixDomainRpcServer(AIBinder* service, const char* name,
-                                void (*readyCallback)(void* param), void* param) {
-    auto server = RpcServer::make();
-    auto fd = unique_fd(android_get_control_socket(name));
-    if (!fd.ok()) {
-        LOG(ERROR) << "Failed to get fd for the socket:" << name;
-        return false;
-    }
-    if (status_t status = server->setupRawSocketServer(std::move(fd)); status != OK) {
-        LOG(ERROR) << "Failed to set up Unix Domain RPC server with name " << name
-                   << " error: " << statusToString(status).c_str();
-        return false;
-    }
-    RunRpcServer(server, service, readyCallback, param);
-    return true;
-}
-
 AIBinder* UnixDomainRpcClient(const char* name) {
     std::string pathname(name);
     pathname = ANDROID_SOCKET_DIR "/" + pathname;
diff --git a/libs/binder/libbinder_rpc_unstable.map.txt b/libs/binder/libbinder_rpc_unstable.map.txt
index f9c7bcf..1bc2416 100644
--- a/libs/binder/libbinder_rpc_unstable.map.txt
+++ b/libs/binder/libbinder_rpc_unstable.map.txt
@@ -1,9 +1,12 @@
 LIBBINDER_RPC_UNSTABLE_SHIM { # platform-only
   global:
-    RunVsockRpcServer;
-    RunVsockRpcServerCallback;
+    ARpcServer_free;
+    ARpcServer_join;
+    ARpcServer_newInitUnixDomain;
+    ARpcServer_newVsock;
+    ARpcServer_shutdown;
+    ARpcServer_start;
     VsockRpcClient;
-    RunInitUnixDomainRpcServer;
     UnixDomainRpcClient;
     RpcPreconnectedClient;
   local:
diff --git a/libs/binder/ndk/include_cpp/android/binder_interface_utils.h b/libs/binder/ndk/include_cpp/android/binder_interface_utils.h
index 81975e7..9949de2 100644
--- a/libs/binder/ndk/include_cpp/android/binder_interface_utils.h
+++ b/libs/binder/ndk/include_cpp/android/binder_interface_utils.h
@@ -196,6 +196,10 @@
 
     bool isRemote() override final { return false; }
 
+    static std::string makeServiceName(std::string_view instance) {
+        return INTERFACE::descriptor + ("/" + std::string(instance));
+    }
+
    protected:
     /**
      * This function should only be called by asBinder. Otherwise, there is a possibility of
diff --git a/libs/binder/ndk/include_cpp/android/binder_to_string.h b/libs/binder/ndk/include_cpp/android/binder_to_string.h
index 6a25db2..2a00736 100644
--- a/libs/binder/ndk/include_cpp/android/binder_to_string.h
+++ b/libs/binder/ndk/include_cpp/android/binder_to_string.h
@@ -160,7 +160,7 @@
 template <typename _T>
 std::string ToString(const _T& t) {
     if constexpr (details::ToEmptyString<_T>::value) {
-        return "";
+        return "<unimplemented>";
     } else if constexpr (std::is_same_v<bool, _T>) {
         return t ? "true" : "false";
     } else if constexpr (std::is_same_v<char16_t, _T>) {
@@ -176,9 +176,11 @@
         return t;
 #ifdef HAS_NDK_INTERFACE
     } else if constexpr (std::is_same_v<::ndk::SpAIBinder, _T>) {
-        return (t.get() == nullptr) ? "(null)" : "";
+        std::stringstream ss;
+        ss << "binder:" << std::hex << t.get();
+        return ss.str();
     } else if constexpr (std::is_same_v<::ndk::ScopedFileDescriptor, _T>) {
-        return (t.get() == -1) ? "(null)" : "";
+        return "fd:" + std::to_string(t.get());
 #endif
 #ifdef HAS_STRING16
     } else if constexpr (std::is_same_v<String16, _T>) {
diff --git a/libs/binder/ndk/include_ndk/android/binder_ibinder.h b/libs/binder/ndk/include_ndk/android/binder_ibinder.h
index 4163897..1af2119 100644
--- a/libs/binder/ndk/include_ndk/android/binder_ibinder.h
+++ b/libs/binder/ndk/include_ndk/android/binder_ibinder.h
@@ -613,7 +613,8 @@
  *
  *  1. If the binder died, shortly after the call to onBinderDied.
  *  2. If the binder is explicitly unlinked with AIBinder_unlinkToDeath or
- *     AIBinder_DeathRecipient_delete.
+ *     AIBinder_DeathRecipient_delete, after any pending onBinderDied calls
+ *     finish.
  *  3. During or shortly after the AIBinder_linkToDeath call if it returns an error.
  *
  * It is guaranteed that the callback is called exactly once for each call to linkToDeath unless the
diff --git a/libs/binder/ndk/include_platform/android/binder_manager.h b/libs/binder/ndk/include_platform/android/binder_manager.h
index c234270..ad4188f 100644
--- a/libs/binder/ndk/include_platform/android/binder_manager.h
+++ b/libs/binder/ndk/include_platform/android/binder_manager.h
@@ -68,6 +68,7 @@
  *
  * \param instance identifier of the service used to lookup the service.
  */
+[[deprecated("this polls 5s, use AServiceManager_waitForService or AServiceManager_checkService")]]
 __attribute__((warn_unused_result)) AIBinder* AServiceManager_getService(const char* instance)
         __INTRODUCED_IN(29);
 
@@ -108,6 +109,67 @@
         __INTRODUCED_IN(31);
 
 /**
+ * Function to call when a service is registered. The instance is passed as well as
+ * ownership of the binder named 'registered'.
+ *
+ * WARNING: a lock is held when this method is called in order to prevent races with
+ * AServiceManager_NotificationRegistration_delete. Do not make synchronous binder calls when
+ * implementing this method to avoid deadlocks.
+ *
+ * \param instance instance name of service registered
+ * \param registered ownership-passed instance of service registered
+ * \param cookie data passed during registration for notifications
+ */
+typedef void (*AServiceManager_onRegister)(const char* instance, AIBinder* registered,
+                                           void* cookie);
+
+/**
+ * Represents a registration to servicemanager which can be cleared anytime.
+ */
+struct AServiceManager_NotificationRegistration;
+
+/**
+ * Get notifications when a service is registered. If the service is already registered,
+ * you will immediately get a notification.
+ *
+ * WARNING: it is strongly recommended to use AServiceManager_waitForService API instead.
+ * That API will wait synchronously, which is what you usually want in cases, including
+ * using some feature or during boot up. There is a history of bugs where waiting for
+ * notifications like this races with service startup. Also, when this API is used, a service
+ * bug will result in silent failure (rather than a debuggable deadlock). Furthermore, there
+ * is a history of this API being used to know when a service is up as a proxy for whethre
+ * that service should be started. This should only be used if you are intending to get
+ * ahold of the service as a client. For lazy services, whether a service is registered
+ * should not be used as a proxy for when it should be registered, which is only known
+ * by the real client.
+ *
+ * WARNING: if you use this API, you must also ensure that you check missing services are
+ * started and crash otherwise. If service failures are ignored, the system rots.
+ *
+ * \param instance name of service to wait for notifications about
+ * \param onRegister callback for when service is registered
+ * \param cookie data associated with this callback
+ *
+ * \return the token for this registration. Deleting this token will unregister.
+ */
+__attribute__((warn_unused_result)) AServiceManager_NotificationRegistration*
+AServiceManager_registerForServiceNotifications(const char* instance,
+                                                AServiceManager_onRegister onRegister, void* cookie)
+        __INTRODUCED_IN(34);
+
+/**
+ * Unregister for notifications and delete the object.
+ *
+ * After this method is called, the callback is guaranteed to no longer be invoked. This will block
+ * until any in-progress onRegister callbacks have completed. It is therefore safe to immediately
+ * destroy the void* cookie that was registered when this method returns.
+ *
+ * \param notification object to dismiss
+ */
+void AServiceManager_NotificationRegistration_delete(
+        AServiceManager_NotificationRegistration* notification) __INTRODUCED_IN(34);
+
+/**
  * Check if a service is declared (e.g. VINTF manifest).
  *
  * \param instance identifier of the service.
diff --git a/libs/binder/ndk/include_platform/android/binder_process.h b/libs/binder/ndk/include_platform/android/binder_process.h
index f408fad..ffcad55 100644
--- a/libs/binder/ndk/include_platform/android/binder_process.h
+++ b/libs/binder/ndk/include_platform/android/binder_process.h
@@ -28,17 +28,33 @@
  *
  * When using this, it is expected that ABinderProcess_setupPolling and
  * ABinderProcess_handlePolledCommands are not used.
+ *
+ * Do not use this from a library. Apps setup their own threadpools, and otherwise, the main
+ * function should be responsible for configuring the threadpool for the entire application.
  */
 void ABinderProcess_startThreadPool();
 /**
  * This sets the maximum number of threads that can be started in the threadpool. By default, after
  * startThreadPool is called, this is 15. If it is called additional times, it will only prevent
  * the kernel from starting new threads and will not delete already existing threads.
+ *
+ * Do not use this from a library. Apps setup their own threadpools, and otherwise, the main
+ * function should be responsible for configuring the threadpool for the entire application.
  */
 bool ABinderProcess_setThreadPoolMaxThreadCount(uint32_t numThreads);
 /**
+ * Check if the threadpool has already been started.
+ * This tells whether someone in the process has called ABinderProcess_startThreadPool. Usually,
+ * you should use this in a library to abort if the threadpool is not started.
+ * Programs should configure binder threadpools once at the beginning.
+ */
+bool ABinderProcess_isThreadPoolStarted();
+/**
  * This adds the current thread to the threadpool. This may cause the threadpool to exceed the
  * maximum size.
+ *
+ * Do not use this from a library. Apps setup their own threadpools, and otherwise, the main
+ * function should be responsible for configuring the threadpool for the entire application.
  */
 void ABinderProcess_joinThreadPool();
 
diff --git a/libs/binder/ndk/include_platform/android/binder_stability.h b/libs/binder/ndk/include_platform/android/binder_stability.h
index 683a433..c1f62e5 100644
--- a/libs/binder/ndk/include_platform/android/binder_stability.h
+++ b/libs/binder/ndk/include_platform/android/binder_stability.h
@@ -50,6 +50,15 @@
  * requirements associated with that higher stability level. For instance, a
  * VINTF stability binder is required to be in the VINTF manifest. This API
  * can be called to use that same interface within the vendor partition.
+ *
+ * WARNING: you must hold on to a binder instance after this is set, while you
+ * are using it. If you get a binder (e.g. `...->asBinder().get()`), you must
+ * save this binder and then
+ * use it. For instance:
+ *
+ *     auto binder = ...->asBinder();
+ *     AIBinder_forceDowngradeToVendorStability(binder.get());
+ *     doSomething(binder);
  */
 void AIBinder_forceDowngradeToVendorStability(AIBinder* binder);
 
@@ -79,6 +88,15 @@
  * requirements associated with that higher stability level. For instance, a
  * VINTF stability binder is required to be in the VINTF manifest. This API
  * can be called to use that same interface within the system partition.
+ *
+ * WARNING: you must hold on to a binder instance after this is set, while you
+ * are using it. If you get a binder (e.g. `...->asBinder().get()`), you must
+ * save this binder and then
+ * use it. For instance:
+ *
+ *     auto binder = ...->asBinder();
+ *     AIBinder_forceDowngradeToSystemStability(binder.get());
+ *     doSomething(binder);
  */
 void AIBinder_forceDowngradeToSystemStability(AIBinder* binder);
 
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 32ca564..54e4628 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -154,7 +154,10 @@
 
 LIBBINDER_NDK34 { # introduced=UpsideDownCake
   global:
+    ABinderProcess_isThreadPoolStarted; # systemapi llndk
     AServiceManager_getUpdatableApexName; # systemapi
+    AServiceManager_registerForServiceNotifications; # systemapi llndk
+    AServiceManager_NotificationRegistration_delete; # systemapi llndk
 };
 
 LIBBINDER_NDK_PLATFORM {
diff --git a/libs/binder/ndk/process.cpp b/libs/binder/ndk/process.cpp
index ac582a4..bc6610e 100644
--- a/libs/binder/ndk/process.cpp
+++ b/libs/binder/ndk/process.cpp
@@ -31,6 +31,9 @@
 bool ABinderProcess_setThreadPoolMaxThreadCount(uint32_t numThreads) {
     return ProcessState::self()->setThreadPoolMaxThreadCount(numThreads) == 0;
 }
+bool ABinderProcess_isThreadPoolStarted() {
+    return ProcessState::self()->isThreadPoolStarted();
+}
 void ABinderProcess_joinThreadPool() {
     IPCThreadState::self()->joinThreadPool();
 }
diff --git a/libs/binder/ndk/service_manager.cpp b/libs/binder/ndk/service_manager.cpp
index a12d0e9..e107c83 100644
--- a/libs/binder/ndk/service_manager.cpp
+++ b/libs/binder/ndk/service_manager.cpp
@@ -28,6 +28,7 @@
 using ::android::IServiceManager;
 using ::android::sp;
 using ::android::status_t;
+using ::android::statusToString;
 using ::android::String16;
 using ::android::String8;
 
@@ -86,6 +87,67 @@
     AIBinder_incStrong(ret.get());
     return ret.get();
 }
+typedef void (*AServiceManager_onRegister)(const char* instance, AIBinder* registered,
+                                           void* cookie);
+
+struct AServiceManager_NotificationRegistration
+    : public IServiceManager::LocalRegistrationCallback {
+    std::mutex m;
+    const char* instance = nullptr;
+    void* cookie = nullptr;
+    AServiceManager_onRegister onRegister = nullptr;
+
+    virtual void onServiceRegistration(const String16& smInstance, const sp<IBinder>& binder) {
+        std::lock_guard<std::mutex> l(m);
+        if (onRegister == nullptr) return;
+
+        CHECK_EQ(String8(smInstance), instance);
+
+        sp<AIBinder> ret = ABpBinder::lookupOrCreateFromBinder(binder);
+        AIBinder_incStrong(ret.get());
+
+        onRegister(instance, ret.get(), cookie);
+    }
+
+    void clear() {
+        std::lock_guard<std::mutex> l(m);
+        instance = nullptr;
+        cookie = nullptr;
+        onRegister = nullptr;
+    }
+};
+
+__attribute__((warn_unused_result)) AServiceManager_NotificationRegistration*
+AServiceManager_registerForServiceNotifications(const char* instance,
+                                                AServiceManager_onRegister onRegister,
+                                                void* cookie) {
+    CHECK_NE(instance, nullptr);
+    CHECK_NE(onRegister, nullptr) << instance;
+    // cookie can be nullptr
+
+    auto cb = sp<AServiceManager_NotificationRegistration>::make();
+    cb->instance = instance;
+    cb->onRegister = onRegister;
+    cb->cookie = cookie;
+
+    sp<IServiceManager> sm = defaultServiceManager();
+    if (status_t res = sm->registerForNotifications(String16(instance), cb); res != STATUS_OK) {
+        LOG(ERROR) << "Failed to register for service notifications for " << instance << ": "
+                   << statusToString(res);
+        return nullptr;
+    }
+
+    cb->incStrong(nullptr);
+    return cb.get();
+}
+
+void AServiceManager_NotificationRegistration_delete(
+        AServiceManager_NotificationRegistration* notification) {
+    CHECK_NE(notification, nullptr);
+    notification->clear();
+    notification->decStrong(nullptr);
+}
+
 bool AServiceManager_isDeclared(const char* instance) {
     if (instance == nullptr) {
         return false;
diff --git a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
index e221e4c..9d5ef68 100644
--- a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
+++ b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
@@ -254,6 +254,47 @@
     AIBinder_decStrong(binder);
 }
 
+struct ServiceData {
+    std::string instance;
+    ndk::SpAIBinder binder;
+
+    static void fillOnRegister(const char* instance, AIBinder* binder, void* cookie) {
+        ServiceData* d = reinterpret_cast<ServiceData*>(cookie);
+        d->instance = instance;
+        d->binder = ndk::SpAIBinder(binder);
+    }
+};
+
+TEST(NdkBinder, RegisterForServiceNotificationsNonExisting) {
+    ServiceData data;
+    auto* notif = AServiceManager_registerForServiceNotifications(
+            "DOES_NOT_EXIST", ServiceData::fillOnRegister, (void*)&data);
+    ASSERT_NE(notif, nullptr);
+
+    sleep(1);  // give us a chance to fail
+    AServiceManager_NotificationRegistration_delete(notif);
+
+    // checking after deleting to avoid needing a mutex over the data - otherwise
+    // in an environment w/ multiple threads, you would need to guard access
+    EXPECT_EQ(data.instance, "");
+    EXPECT_EQ(data.binder, nullptr);
+}
+
+TEST(NdkBinder, RegisterForServiceNotificationsExisting) {
+    ServiceData data;
+    auto* notif = AServiceManager_registerForServiceNotifications(
+            kExistingNonNdkService, ServiceData::fillOnRegister, (void*)&data);
+    ASSERT_NE(notif, nullptr);
+
+    sleep(1);  // give us a chance to fail
+    AServiceManager_NotificationRegistration_delete(notif);
+
+    // checking after deleting to avoid needing a mutex over the data - otherwise
+    // in an environment w/ multiple threads, you would need to guard access
+    EXPECT_EQ(data.instance, kExistingNonNdkService);
+    EXPECT_EQ(data.binder, ndk::SpAIBinder(AServiceManager_checkService(kExistingNonNdkService)));
+}
+
 TEST(NdkBinder, UnimplementedDump) {
     sp<IFoo> foo = IFoo::getService(IFoo::kSomeInstanceName);
     ASSERT_NE(foo, nullptr);
diff --git a/libs/binder/rust/Android.bp b/libs/binder/rust/Android.bp
index 738d16a..afd414a 100644
--- a/libs/binder/rust/Android.bp
+++ b/libs/binder/rust/Android.bp
@@ -17,7 +17,6 @@
     rustlibs: [
         "libbinder_ndk_sys",
         "libdowncast_rs",
-        "liblazy_static",
         "liblibc",
     ],
     host_supported: true,
@@ -160,7 +159,6 @@
     rustlibs: [
         "libbinder_ndk_sys",
         "libdowncast_rs",
-        "liblazy_static",
         "liblibc",
     ],
 }
diff --git a/libs/binder/rust/rpcbinder/Android.bp b/libs/binder/rust/rpcbinder/Android.bp
index 9771cc9..f70ebfc 100644
--- a/libs/binder/rust/rpcbinder/Android.bp
+++ b/libs/binder/rust/rpcbinder/Android.bp
@@ -19,6 +19,7 @@
         "libbinder_rpc_unstable_bindgen_sys",
         "libbinder_rs",
         "libdowncast_rs",
+        "libforeign_types",
         "liblibc",
         "liblog_rust",
     ],
diff --git a/libs/binder/rust/rpcbinder/src/lib.rs b/libs/binder/rust/rpcbinder/src/lib.rs
index 89a49a4..1b719aa 100644
--- a/libs/binder/rust/rpcbinder/src/lib.rs
+++ b/libs/binder/rust/rpcbinder/src/lib.rs
@@ -23,6 +23,4 @@
     get_preconnected_rpc_interface, get_preconnected_rpc_service, get_unix_domain_rpc_interface,
     get_unix_domain_rpc_service, get_vsock_rpc_interface, get_vsock_rpc_service,
 };
-pub use server::{
-    run_init_unix_domain_rpc_server, run_vsock_rpc_server, run_vsock_rpc_server_with_factory,
-};
+pub use server::{run_vsock_rpc_server_with_factory, RpcServer, RpcServerRef};
diff --git a/libs/binder/rust/rpcbinder/src/server.rs b/libs/binder/rust/rpcbinder/src/server.rs
index b350a13..d5f1219 100644
--- a/libs/binder/rust/rpcbinder/src/server.rs
+++ b/libs/binder/rust/rpcbinder/src/server.rs
@@ -18,114 +18,94 @@
     unstable_api::{AIBinder, AsNative},
     SpIBinder,
 };
+use binder_rpc_unstable_bindgen::ARpcServer;
+use foreign_types::{foreign_type, ForeignType, ForeignTypeRef};
+use std::io::{Error, ErrorKind};
 use std::{ffi::CString, os::raw, ptr::null_mut};
 
-/// Runs a binder RPC server, serving the supplied binder service implementation on the given vsock
-/// port.
-///
-/// If and when the server is ready for connections (it is listening on the port), `on_ready` is
-/// called to allow appropriate action to be taken - e.g. to notify clients that they may now
-/// attempt to connect.
-///
-/// The current thread is joined to the binder thread pool to handle incoming messages.
-///
-/// Returns true if the server has shutdown normally, false if it failed in some way.
-pub fn run_vsock_rpc_server<F>(service: SpIBinder, port: u32, on_ready: F) -> bool
-where
-    F: FnOnce(),
-{
-    let mut ready_notifier = ReadyNotifier(Some(on_ready));
-    ready_notifier.run_vsock_server(service, port)
+foreign_type! {
+    type CType = binder_rpc_unstable_bindgen::ARpcServer;
+    fn drop = binder_rpc_unstable_bindgen::ARpcServer_free;
+
+    /// A type that represents a foreign instance of RpcServer.
+    #[derive(Debug)]
+    pub struct RpcServer;
+    /// A borrowed RpcServer.
+    pub struct RpcServerRef;
 }
 
-/// Runs a binder RPC server, serving the supplied binder service implementation on the given
-/// socket file name. The socket should be initialized in init.rc with the same name.
-///
-/// If and when the server is ready for connections, `on_ready` is called to allow appropriate
-/// action to be taken - e.g. to notify clients that they may now attempt to connect.
-///
-/// The current thread is joined to the binder thread pool to handle incoming messages.
-///
-/// Returns true if the server has shutdown normally, false if it failed in some way.
-pub fn run_init_unix_domain_rpc_server<F>(
-    service: SpIBinder,
-    socket_name: &str,
-    on_ready: F,
-) -> bool
-where
-    F: FnOnce(),
-{
-    let mut ready_notifier = ReadyNotifier(Some(on_ready));
-    ready_notifier.run_init_unix_domain_server(service, socket_name)
-}
+/// SAFETY - The opaque handle can be cloned freely.
+unsafe impl Send for RpcServer {}
+/// SAFETY - The underlying C++ RpcServer class is thread-safe.
+unsafe impl Sync for RpcServer {}
 
-struct ReadyNotifier<F>(Option<F>)
-where
-    F: FnOnce();
-
-impl<F> ReadyNotifier<F>
-where
-    F: FnOnce(),
-{
-    fn run_vsock_server(&mut self, mut service: SpIBinder, port: u32) -> bool {
+impl RpcServer {
+    /// Creates a binder RPC server, serving the supplied binder service implementation on the given
+    /// vsock port. Only connections from the given CID are accepted.
+    ///
+    // Set `cid` to libc::VMADDR_CID_ANY to accept connections from any client.
+    // Set `cid` to libc::VMADDR_CID_LOCAL to only bind to the local vsock interface.
+    pub fn new_vsock(mut service: SpIBinder, cid: u32, port: u32) -> Result<RpcServer, Error> {
         let service = service.as_native_mut();
-        let param = self.as_void_ptr();
 
         // SAFETY: Service ownership is transferring to the server and won't be valid afterward.
         // Plus the binder objects are threadsafe.
-        // RunVsockRpcServerCallback does not retain a reference to `ready_callback` or `param`; it only
-        // uses them before it returns, which is during the lifetime of `self`.
         unsafe {
-            binder_rpc_unstable_bindgen::RunVsockRpcServerCallback(
-                service,
-                port,
-                Some(Self::ready_callback),
-                param,
-            )
+            Self::checked_from_ptr(binder_rpc_unstable_bindgen::ARpcServer_newVsock(
+                service, cid, port,
+            ))
         }
     }
 
-    fn run_init_unix_domain_server(&mut self, mut service: SpIBinder, socket_name: &str) -> bool {
+    /// Creates a binder RPC server, serving the supplied binder service implementation on the given
+    /// socket file name. The socket should be initialized in init.rc with the same name.
+    pub fn new_init_unix_domain(
+        mut service: SpIBinder,
+        socket_name: &str,
+    ) -> Result<RpcServer, Error> {
         let socket_name = match CString::new(socket_name) {
             Ok(s) => s,
             Err(e) => {
                 log::error!("Cannot convert {} to CString. Error: {:?}", socket_name, e);
-                return false;
+                return Err(Error::from(ErrorKind::InvalidInput));
             }
         };
         let service = service.as_native_mut();
-        let param = self.as_void_ptr();
 
         // SAFETY: Service ownership is transferring to the server and won't be valid afterward.
         // Plus the binder objects are threadsafe.
-        // RunInitUnixDomainRpcServer does not retain a reference to `ready_callback` or `param`;
-        // it only uses them before it returns, which is during the lifetime of `self`.
         unsafe {
-            binder_rpc_unstable_bindgen::RunInitUnixDomainRpcServer(
+            Self::checked_from_ptr(binder_rpc_unstable_bindgen::ARpcServer_newInitUnixDomain(
                 service,
                 socket_name.as_ptr(),
-                Some(Self::ready_callback),
-                param,
-            )
+            ))
         }
     }
 
-    fn as_void_ptr(&mut self) -> *mut raw::c_void {
-        self as *mut _ as *mut raw::c_void
-    }
-
-    unsafe extern "C" fn ready_callback(param: *mut raw::c_void) {
-        // SAFETY: This is only ever called by `RunVsockRpcServerCallback`, within the lifetime of the
-        // `ReadyNotifier`, with `param` taking the value returned by `as_void_ptr` (so a properly
-        // aligned non-null pointer to an initialized instance).
-        let ready_notifier = param as *mut Self;
-        ready_notifier.as_mut().unwrap().notify()
-    }
-
-    fn notify(&mut self) {
-        if let Some(on_ready) = self.0.take() {
-            on_ready();
+    unsafe fn checked_from_ptr(ptr: *mut ARpcServer) -> Result<RpcServer, Error> {
+        if ptr.is_null() {
+            return Err(Error::new(ErrorKind::Other, "Failed to start server"));
         }
+        Ok(RpcServer::from_ptr(ptr))
+    }
+}
+
+impl RpcServerRef {
+    /// Starts a new background thread and calls join(). Returns immediately.
+    pub fn start(&self) {
+        unsafe { binder_rpc_unstable_bindgen::ARpcServer_start(self.as_ptr()) };
+    }
+
+    /// Joins the RpcServer thread. The call blocks until the server terminates.
+    /// This must be called from exactly one thread.
+    pub fn join(&self) {
+        unsafe { binder_rpc_unstable_bindgen::ARpcServer_join(self.as_ptr()) };
+    }
+
+    /// Shuts down the running RpcServer. Can be called multiple times and from
+    /// multiple threads. Called automatically during drop().
+    pub fn shutdown(&self) {
+        unsafe { binder_rpc_unstable_bindgen::ARpcServer_shutdown(self.as_ptr()) };
     }
 }
 
diff --git a/libs/binder/rust/src/native.rs b/libs/binder/rust/src/native.rs
index dee05d0..6f686fb 100644
--- a/libs/binder/rust/src/native.rs
+++ b/libs/binder/rust/src/native.rs
@@ -22,7 +22,6 @@
 use crate::proxy::SpIBinder;
 use crate::sys;
 
-use lazy_static::lazy_static;
 use std::convert::TryFrom;
 use std::ffi::{c_void, CStr, CString};
 use std::fs::File;
@@ -508,10 +507,8 @@
     _private: (),
 }
 
-lazy_static! {
-    // Count of how many LazyServiceGuard objects are in existence.
-    static ref GUARD_COUNT: Mutex<u64> = Mutex::new(0);
-}
+// Count of how many LazyServiceGuard objects are in existence.
+static GUARD_COUNT: Mutex<u64> = Mutex::new(0);
 
 impl LazyServiceGuard {
     /// Create a new LazyServiceGuard to prevent the service manager prematurely killing this
diff --git a/libs/binder/rust/tests/parcel_fuzzer/Android.bp b/libs/binder/rust/tests/parcel_fuzzer/Android.bp
index 28e0200..df8a2af 100644
--- a/libs/binder/rust/tests/parcel_fuzzer/Android.bp
+++ b/libs/binder/rust/tests/parcel_fuzzer/Android.bp
@@ -21,5 +21,7 @@
             "waghpawan@google.com",
             "smoreland@google.com",
         ],
+        // hotlist "AIDL fuzzers bugs" on buganizer
+        hotlists: ["4637097"],
     },
 }
diff --git a/libs/binder/rust/tests/parcel_fuzzer/random_parcel/fuzz_service_test/Android.bp b/libs/binder/rust/tests/parcel_fuzzer/random_parcel/fuzz_service_test/Android.bp
index 43e407c..5cb406a 100644
--- a/libs/binder/rust/tests/parcel_fuzzer/random_parcel/fuzz_service_test/Android.bp
+++ b/libs/binder/rust/tests/parcel_fuzzer/random_parcel/fuzz_service_test/Android.bp
@@ -29,5 +29,7 @@
             "waghpawan@google.com",
             "smoreland@google.com",
         ],
+        // hotlist "AIDL fuzzers bugs" on buganizer
+        hotlists: ["4637097"],
     },
 }
diff --git a/libs/binder/rust/tests/parcel_fuzzer/read_utils.rs b/libs/binder/rust/tests/parcel_fuzzer/read_utils.rs
index d2bfde1..a2d48b6 100644
--- a/libs/binder/rust/tests/parcel_fuzzer/read_utils.rs
+++ b/libs/binder/rust/tests/parcel_fuzzer/read_utils.rs
@@ -16,9 +16,9 @@
 
 use binder::binder_impl::BorrowedParcel;
 use binder::{ParcelFileDescriptor, Parcelable, SpIBinder};
-use binderReadParcelIface::aidl::EmptyParcelable::EmptyParcelable;
-use binderReadParcelIface::aidl::GenericDataParcelable::GenericDataParcelable;
-use binderReadParcelIface::aidl::SingleDataParcelable::SingleDataParcelable;
+use binderReadParcelIface::aidl::parcelables::EmptyParcelable::EmptyParcelable;
+use binderReadParcelIface::aidl::parcelables::GenericDataParcelable::GenericDataParcelable;
+use binderReadParcelIface::aidl::parcelables::SingleDataParcelable::SingleDataParcelable;
 
 macro_rules! read_parcel_interface {
     ($data_type:ty) => {
diff --git a/libs/binder/tests/binderLibTest.cpp b/libs/binder/tests/binderLibTest.cpp
index 25b524f..f7498c4 100644
--- a/libs/binder/tests/binderLibTest.cpp
+++ b/libs/binder/tests/binderLibTest.cpp
@@ -120,6 +120,7 @@
     BINDER_LIB_TEST_CAN_GET_SID,
     BINDER_LIB_TEST_GET_MAX_THREAD_COUNT,
     BINDER_LIB_TEST_SET_MAX_THREAD_COUNT,
+    BINDER_LIB_TEST_IS_THREADPOOL_STARTED,
     BINDER_LIB_TEST_LOCK_UNLOCK,
     BINDER_LIB_TEST_PROCESS_LOCK,
     BINDER_LIB_TEST_UNLOCK_AFTER_MS,
@@ -1383,6 +1384,14 @@
     EXPECT_EQ(replyi, kKernelThreads + 1);
 }
 
+TEST_F(BinderLibTest, ThreadPoolStarted) {
+    Parcel data, reply;
+    sp<IBinder> server = addServer();
+    ASSERT_TRUE(server != nullptr);
+    EXPECT_THAT(server->transact(BINDER_LIB_TEST_IS_THREADPOOL_STARTED, data, &reply), NO_ERROR);
+    EXPECT_TRUE(reply.readBool());
+}
+
 size_t epochMillis() {
     using std::chrono::duration_cast;
     using std::chrono::milliseconds;
@@ -1849,6 +1858,10 @@
                 reply->writeInt32(ProcessState::self()->getThreadPoolMaxTotalThreadCount());
                 return NO_ERROR;
             }
+            case BINDER_LIB_TEST_IS_THREADPOOL_STARTED: {
+                reply->writeBool(ProcessState::self()->isThreadPoolStarted());
+                return NO_ERROR;
+            }
             case BINDER_LIB_TEST_PROCESS_LOCK: {
                 m_blockMutex.lock();
                 return NO_ERROR;
diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index 68a827b..739c217 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -913,6 +913,33 @@
     EXPECT_EQ(status.transactionError(), BAD_VALUE) << status;
 }
 
+TEST_P(BinderRpc, AppendInvalidFd) {
+    auto proc = createRpcTestSocketServerProcess({
+            .clientFileDescriptorTransportMode = RpcSession::FileDescriptorTransportMode::UNIX,
+            .serverSupportedFileDescriptorTransportModes =
+                    {RpcSession::FileDescriptorTransportMode::UNIX},
+    });
+
+    int badFd = fcntl(STDERR_FILENO, F_DUPFD_CLOEXEC, 0);
+    ASSERT_NE(badFd, -1);
+
+    // Close the file descriptor so it becomes invalid for dup
+    close(badFd);
+
+    Parcel p1;
+    p1.markForBinder(proc.rootBinder);
+    p1.writeInt32(3);
+    EXPECT_EQ(OK, p1.writeFileDescriptor(badFd, false));
+
+    Parcel pRaw;
+    pRaw.markForBinder(proc.rootBinder);
+    EXPECT_EQ(OK, pRaw.appendFrom(&p1, 0, p1.dataSize()));
+
+    pRaw.setDataPosition(0);
+    EXPECT_EQ(3, pRaw.readInt32());
+    ASSERT_EQ(-1, pRaw.readFileDescriptor());
+}
+
 TEST_P(BinderRpc, WorksWithLibbinderNdkPing) {
     if constexpr (!kEnableSharedLibs) {
         GTEST_SKIP() << "Test disabled because Binder was built as a static library";
@@ -1315,7 +1342,7 @@
                 } break;
                 case SocketType::VSOCK: {
                     auto port = allocateVsockPort();
-                    auto status = rpcServer->setupVsockServer(port);
+                    auto status = rpcServer->setupVsockServer(VMADDR_CID_LOCAL, port);
                     if (status != OK) {
                         return AssertionFailure() << "setupVsockServer: " << statusToString(status);
                     }
diff --git a/libs/binder/tests/binderRpcTestService.cpp b/libs/binder/tests/binderRpcTestService.cpp
index 995e761..cc9726b 100644
--- a/libs/binder/tests/binderRpcTestService.cpp
+++ b/libs/binder/tests/binderRpcTestService.cpp
@@ -58,7 +58,7 @@
             CHECK_EQ(OK, server->setupRawSocketServer(std::move(socketFd)));
             break;
         case SocketType::VSOCK:
-            CHECK_EQ(OK, server->setupVsockServer(serverConfig.vsockPort));
+            CHECK_EQ(OK, server->setupVsockServer(VMADDR_CID_LOCAL, serverConfig.vsockPort));
             break;
         case SocketType::INET: {
             CHECK_EQ(OK, server->setupInetServer(kLocalInetAddress, 0, &outPort));
diff --git a/libs/binder/tests/parcel_fuzzer/Android.bp b/libs/binder/tests/parcel_fuzzer/Android.bp
index 61a2412..35866ad 100644
--- a/libs/binder/tests/parcel_fuzzer/Android.bp
+++ b/libs/binder/tests/parcel_fuzzer/Android.bp
@@ -12,13 +12,14 @@
     host_supported: true,
     unstable: true,
     srcs: [
-        "EmptyParcelable.aidl",
-        "SingleDataParcelable.aidl",
-        "GenericDataParcelable.aidl",
+        "parcelables/EmptyParcelable.aidl",
+        "parcelables/SingleDataParcelable.aidl",
+        "parcelables/GenericDataParcelable.aidl",
     ],
     backend: {
         java: {
-            enabled: false,
+            enabled: true,
+            platform_apis: true,
         },
         rust: {
             enabled: true,
diff --git a/libs/binder/tests/parcel_fuzzer/EmptyParcelable.aidl b/libs/binder/tests/parcel_fuzzer/EmptyParcelable.aidl
deleted file mode 100644
index 96d6223..0000000
--- a/libs/binder/tests/parcel_fuzzer/EmptyParcelable.aidl
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Copyright (C) 2022 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.
- */
-
-parcelable EmptyParcelable{
-}
\ No newline at end of file
diff --git a/libs/binder/tests/parcel_fuzzer/binder.cpp b/libs/binder/tests/parcel_fuzzer/binder.cpp
index 9dac2c9..768fbe1 100644
--- a/libs/binder/tests/parcel_fuzzer/binder.cpp
+++ b/libs/binder/tests/parcel_fuzzer/binder.cpp
@@ -16,9 +16,9 @@
 #define FUZZ_LOG_TAG "binder"
 
 #include "binder.h"
-#include "EmptyParcelable.h"
-#include "GenericDataParcelable.h"
-#include "SingleDataParcelable.h"
+#include "parcelables/EmptyParcelable.h"
+#include "parcelables/GenericDataParcelable.h"
+#include "parcelables/SingleDataParcelable.h"
 #include "util.h"
 
 #include <android-base/hex.h>
@@ -359,19 +359,19 @@
     },
     [] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
         FUZZ_LOG() << "about to call readFromParcel() with status for EmptyParcelable";
-        EmptyParcelable emptyParcelable{};
+        parcelables::EmptyParcelable emptyParcelable{};
         status_t status = emptyParcelable.readFromParcel(&p);
         FUZZ_LOG() << " status: " << status;
     },
     [] (const ::android::Parcel& p , FuzzedDataProvider& /*provider*/) {
         FUZZ_LOG() << "about to call readFromParcel() with status for SingleDataParcelable";
-        SingleDataParcelable singleDataParcelable;
+        parcelables::SingleDataParcelable singleDataParcelable;
         status_t status = singleDataParcelable.readFromParcel(&p);
         FUZZ_LOG() <<" status: " << status;
     },
     [] (const ::android::Parcel& p, FuzzedDataProvider& /*provider*/) {
         FUZZ_LOG() << "about to call readFromParcel() with status for GenericDataParcelable";
-        GenericDataParcelable genericDataParcelable;
+        parcelables::GenericDataParcelable genericDataParcelable;
         status_t status = genericDataParcelable.readFromParcel(&p);
         FUZZ_LOG() <<" status: " << status;
     },
diff --git a/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp b/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp
index af773a0..53e7de4 100644
--- a/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp
+++ b/libs/binder/tests/parcel_fuzzer/binder_ndk.cpp
@@ -16,9 +16,9 @@
 #define FUZZ_LOG_TAG "binder_ndk"
 
 #include "binder_ndk.h"
-#include "aidl/EmptyParcelable.h"
-#include "aidl/GenericDataParcelable.h"
-#include "aidl/SingleDataParcelable.h"
+#include "aidl/parcelables/EmptyParcelable.h"
+#include "aidl/parcelables/GenericDataParcelable.h"
+#include "aidl/parcelables/SingleDataParcelable.h"
 
 #include <android/binder_parcel_utils.h>
 #include <android/binder_parcelable_utils.h>
@@ -183,19 +183,19 @@
 
         [](const NdkParcelAdapter& p, FuzzedDataProvider& /*provider*/) {
             FUZZ_LOG() << "about to read parcel using readFromParcel for EmptyParcelable";
-            aidl::EmptyParcelable emptyParcelable;
+            aidl::parcelables::EmptyParcelable emptyParcelable;
             binder_status_t status = emptyParcelable.readFromParcel(p.aParcel());
             FUZZ_LOG() << "status: " << status;
         },
         [](const NdkParcelAdapter& p, FuzzedDataProvider& /*provider*/) {
             FUZZ_LOG() << "about to read parcel using readFromParcel for SingleDataParcelable";
-            aidl::SingleDataParcelable singleDataParcelable;
+            aidl::parcelables::SingleDataParcelable singleDataParcelable;
             binder_status_t status = singleDataParcelable.readFromParcel(p.aParcel());
             FUZZ_LOG() << "status: " << status;
         },
         [](const NdkParcelAdapter& p, FuzzedDataProvider& /*provider*/) {
             FUZZ_LOG() << "about to read parcel using readFromParcel for GenericDataParcelable";
-            aidl::GenericDataParcelable genericDataParcelable;
+            aidl::parcelables::GenericDataParcelable genericDataParcelable;
             binder_status_t status = genericDataParcelable.readFromParcel(p.aParcel());
             FUZZ_LOG() << "status: " << status;
         },
diff --git a/libs/binder/tests/parcel_fuzzer/libbinder_driver.cpp b/libs/binder/tests/parcel_fuzzer/libbinder_driver.cpp
index 25f6096..8bef33f 100644
--- a/libs/binder/tests/parcel_fuzzer/libbinder_driver.cpp
+++ b/libs/binder/tests/parcel_fuzzer/libbinder_driver.cpp
@@ -18,6 +18,7 @@
 #include <fuzzbinder/random_parcel.h>
 
 #include <android-base/logging.h>
+#include <binder/IPCThreadState.h>
 #include <binder/ProcessState.h>
 
 namespace android {
@@ -30,10 +31,19 @@
             .extraFds = {},
     };
 
+    if (provider.ConsumeBool()) {
+        // set calling uid
+        IPCThreadState::self()->restoreCallingIdentity(provider.ConsumeIntegral<int64_t>());
+    }
+
     while (provider.remaining_bytes() > 0) {
-        uint32_t code = provider.ConsumeIntegral<uint32_t>();
+        // Most of the AIDL services will have small set of transaction codes.
+        uint32_t code = provider.ConsumeBool() ? provider.ConsumeIntegral<uint32_t>()
+                                               : provider.ConsumeIntegralInRange<uint32_t>(0, 100);
         uint32_t flags = provider.ConsumeIntegral<uint32_t>();
         Parcel data;
+        // for increased fuzz coverage
+        data.setEnforceNoDataAvail(provider.ConsumeBool());
 
         sp<IBinder> target = options.extraBinders.at(
                 provider.ConsumeIntegralInRange<size_t>(0, options.extraBinders.size() - 1));
@@ -50,6 +60,8 @@
         fillRandomParcel(&data, FuzzedDataProvider(subData.data(), subData.size()), &options);
 
         Parcel reply;
+        // for increased fuzz coverage
+        reply.setEnforceNoDataAvail(provider.ConsumeBool());
         (void)target->transact(code, data, &reply, flags);
 
         // feed back in binders and fds that are returned from the service, so that
diff --git a/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl b/libs/binder/tests/parcel_fuzzer/parcelables/EmptyParcelable.aidl
similarity index 92%
copy from libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl
copy to libs/binder/tests/parcel_fuzzer/parcelables/EmptyParcelable.aidl
index d62891b..1216250 100644
--- a/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl
+++ b/libs/binder/tests/parcel_fuzzer/parcelables/EmptyParcelable.aidl
@@ -13,7 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-parcelable SingleDataParcelable{
-   int data;
+package parcelables;
+parcelable EmptyParcelable {
 }
\ No newline at end of file
diff --git a/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl b/libs/binder/tests/parcel_fuzzer/parcelables/GenericDataParcelable.aidl
similarity index 97%
rename from libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl
rename to libs/binder/tests/parcel_fuzzer/parcelables/GenericDataParcelable.aidl
index fc2542b..f1079e9 100644
--- a/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl
+++ b/libs/binder/tests/parcel_fuzzer/parcelables/GenericDataParcelable.aidl
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package parcelables;
 
 parcelable GenericDataParcelable {
     int data;
diff --git a/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl b/libs/binder/tests/parcel_fuzzer/parcelables/SingleDataParcelable.aidl
similarity index 96%
rename from libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl
rename to libs/binder/tests/parcel_fuzzer/parcelables/SingleDataParcelable.aidl
index d62891b..0187168 100644
--- a/libs/binder/tests/parcel_fuzzer/SingleDataParcelable.aidl
+++ b/libs/binder/tests/parcel_fuzzer/parcelables/SingleDataParcelable.aidl
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package parcelables;
 
 parcelable SingleDataParcelable{
    int data;
diff --git a/libs/binder/tests/parcel_fuzzer/random_parcel.cpp b/libs/binder/tests/parcel_fuzzer/random_parcel.cpp
index edc695f..f0beed2 100644
--- a/libs/binder/tests/parcel_fuzzer/random_parcel.cpp
+++ b/libs/binder/tests/parcel_fuzzer/random_parcel.cpp
@@ -73,6 +73,11 @@
                                                                                 1));
                         CHECK(OK == p->writeFileDescriptor(fd.get(), false /*takeOwnership*/));
                     } else {
+                        // b/260119717 - Adding more FDs can eventually lead to FD limit exhaustion
+                        if (options->extraFds.size() > 1000) {
+                            return;
+                        }
+
                         std::vector<base::unique_fd> fds = getRandomFds(&provider);
                         CHECK(OK ==
                               p->writeFileDescriptor(fds.begin()->release(),
diff --git a/libs/binder/trusty/RpcTransportTipcTrusty.cpp b/libs/binder/trusty/RpcTransportTipcTrusty.cpp
index 58bfe71..d249b2e 100644
--- a/libs/binder/trusty/RpcTransportTipcTrusty.cpp
+++ b/libs/binder/trusty/RpcTransportTipcTrusty.cpp
@@ -239,6 +239,12 @@
         }
         if (!(uevt.event & IPC_HANDLE_POLL_MSG)) {
             /* No message, terminate here and leave mHaveMessage false */
+            if (uevt.event & IPC_HANDLE_POLL_HUP) {
+                // Peer closed the connection. We need to preserve the order
+                // between MSG and HUP from FdTrigger.cpp, which means that
+                // getting MSG&HUP should return OK instead of DEAD_OBJECT.
+                return DEAD_OBJECT;
+            }
             return OK;
         }
 
diff --git a/libs/binder/trusty/include/log/log.h b/libs/binder/trusty/include/log/log.h
index bf877a3..de84617 100644
--- a/libs/binder/trusty/include/log/log.h
+++ b/libs/binder/trusty/include/log/log.h
@@ -120,3 +120,9 @@
     do {                                                                 \
         TLOGE("android_errorWriteLog: tag:%x subTag:%s\n", tag, subTag); \
     } while (0)
+
+// Override the definition of __assert from binder_status.h
+#ifndef __BIONIC__
+#undef __assert
+#define __assert(file, line, str) LOG_ALWAYS_FATAL("%s:%d: %s", file, line, str)
+#endif // __BIONIC__
diff --git a/libs/fakeservicemanager/ServiceManager.cpp b/libs/fakeservicemanager/ServiceManager.cpp
index 480ec79..1109ad8 100644
--- a/libs/fakeservicemanager/ServiceManager.cpp
+++ b/libs/fakeservicemanager/ServiceManager.cpp
@@ -36,6 +36,9 @@
 status_t ServiceManager::addService(const String16& name, const sp<IBinder>& service,
                                 bool /*allowIsolated*/,
                                 int /*dumpsysFlags*/) {
+    if (service == nullptr) {
+        return UNEXPECTED_NULL;
+    }
     mNameToService[name] = service;
     return NO_ERROR;
 }
@@ -103,4 +106,8 @@
     std::vector<IServiceManager::ServiceDebugInfo> ret;
     return ret;
 }
+
+void ServiceManager::clear() {
+    mNameToService.clear();
+}
 }  // namespace android
diff --git a/libs/fakeservicemanager/include/fakeservicemanager/ServiceManager.h b/libs/fakeservicemanager/include/fakeservicemanager/ServiceManager.h
index ee0637e..ba6bb7d 100644
--- a/libs/fakeservicemanager/include/fakeservicemanager/ServiceManager.h
+++ b/libs/fakeservicemanager/include/fakeservicemanager/ServiceManager.h
@@ -64,6 +64,9 @@
 
     std::vector<IServiceManager::ServiceDebugInfo> getServiceDebugInfo() override;
 
+    // Clear all of the registered services
+    void clear();
+
 private:
     std::map<String16, sp<IBinder>> mNameToService;
 };
diff --git a/libs/fakeservicemanager/test_sm.cpp b/libs/fakeservicemanager/test_sm.cpp
index 71e5abe..8682c1c 100644
--- a/libs/fakeservicemanager/test_sm.cpp
+++ b/libs/fakeservicemanager/test_sm.cpp
@@ -50,6 +50,12 @@
         IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT), OK);
 }
 
+TEST(AddService, SadNullBinder) {
+    auto sm = new ServiceManager();
+    EXPECT_EQ(sm->addService(String16("foo"), nullptr, false /*allowIsolated*/,
+        IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT), android::UNEXPECTED_NULL);
+}
+
 TEST(AddService, HappyOverExistingService) {
     auto sm = new ServiceManager();
     EXPECT_EQ(sm->addService(String16("foo"), getBinder(), false /*allowIsolated*/,
@@ -58,6 +64,15 @@
         IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT), OK);
 }
 
+TEST(AddService, HappyClearAddedService) {
+    auto sm = new ServiceManager();
+    EXPECT_EQ(sm->addService(String16("foo"), getBinder(), false /*allowIsolated*/,
+        IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT), OK);
+    EXPECT_NE(sm->getService(String16("foo")), nullptr);
+    sm->clear();
+    EXPECT_EQ(sm->getService(String16("foo")), nullptr);
+}
+
 TEST(GetService, HappyHappy) {
     auto sm = new ServiceManager();
     sp<IBinder> service = getBinder();
diff --git a/libs/gralloc/types/Android.bp b/libs/gralloc/types/Android.bp
index bd21fba..f5af425 100644
--- a/libs/gralloc/types/Android.bp
+++ b/libs/gralloc/types/Android.bp
@@ -51,14 +51,14 @@
     ],
 
     shared_libs: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.mapper@4.0",
         "libhidlbase",
         "liblog",
     ],
 
     export_shared_lib_headers: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.mapper@4.0",
         "libhidlbase",
     ],
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 6c39bbf..2ac1174 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -321,7 +321,7 @@
         "android.hardware.graphics.bufferqueue@2.0",
         "android.hardware.graphics.common@1.1",
         "android.hardware.graphics.common@1.2",
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hidl.token@1.0-utils",
         "libbase",
         "libcutils",
diff --git a/libs/gui/BLASTBufferQueue.cpp b/libs/gui/BLASTBufferQueue.cpp
index dbccf30..a51bbb1 100644
--- a/libs/gui/BLASTBufferQueue.cpp
+++ b/libs/gui/BLASTBufferQueue.cpp
@@ -287,18 +287,17 @@
 
                 // We need to check if we were waiting for a transaction callback in order to
                 // process any pending buffers and unblock. It's possible to get transaction
-                // callbacks for previous requests so we need to ensure the frame from this
-                // transaction callback matches the last acquired buffer. Since acquireNextBuffer
-                // will stop processing buffers when mWaitForTransactionCallback is set, we know
-                // that mLastAcquiredFrameNumber is the frame we're waiting on.
-                // We also want to check if mNextTransaction is null because it's possible another
+                // callbacks for previous requests so we need to ensure that there are no pending
+                // frame numbers that were in a sync. We remove the frame from mSyncedFrameNumbers
+                // set and then check if it's empty. If there are no more pending syncs, we can
+                // proceed with flushing the shadow queue.
+                // We also want to check if mSyncTransaction is null because it's possible another
                 // sync request came in while waiting, but it hasn't started processing yet. In that
                 // case, we don't actually want to flush the frames in between since they will get
                 // processed and merged with the sync transaction and released earlier than if they
                 // were sent to SF
-                if (mWaitForTransactionCallback && mSyncTransaction == nullptr &&
-                    currFrameNumber >= mLastAcquiredFrameNumber) {
-                    mWaitForTransactionCallback = false;
+                mSyncedFrameNumbers.erase(currFrameNumber);
+                if (mSyncedFrameNumbers.empty() && mSyncTransaction == nullptr) {
                     flushShadowQueue();
                 }
             } else {
@@ -308,7 +307,6 @@
             BQA_LOGE("No matching SurfaceControls found: mSurfaceControlsWithPendingCallback was "
                      "empty.");
         }
-
         decStrong((void*)transactionCommittedCallbackThunk);
     }
 }
@@ -351,6 +349,20 @@
                                                     stat.latchTime,
                                                     stat.frameEventStats.dequeueReadyTime);
                 }
+                auto currFrameNumber = stat.frameEventStats.frameNumber;
+                std::vector<ReleaseCallbackId> staleReleases;
+                for (const auto& [key, value]: mSubmitted) {
+                    if (currFrameNumber > key.framenumber) {
+                        staleReleases.push_back(key);
+                    }
+                }
+                for (const auto& staleRelease : staleReleases) {
+                    BQA_LOGE("Faking releaseBufferCallback from transactionCompleteCallback");
+                    BBQ_TRACE("FakeReleaseCallback");
+                    releaseBufferCallbackLocked(staleRelease,
+                        stat.previousReleaseFence ? stat.previousReleaseFence : Fence::NO_FENCE,
+                        stat.currentMaxAcquiredBufferCount);
+                }
             } else {
                 BQA_LOGE("Failed to find matching SurfaceControl in transactionCallback");
             }
@@ -391,7 +403,14 @@
         const ReleaseCallbackId& id, const sp<Fence>& releaseFence,
         std::optional<uint32_t> currentMaxAcquiredBufferCount) {
     BBQ_TRACE();
+
     std::unique_lock _lock{mMutex};
+    releaseBufferCallbackLocked(id, releaseFence, currentMaxAcquiredBufferCount);
+}
+
+void BLASTBufferQueue::releaseBufferCallbackLocked(const ReleaseCallbackId& id,
+        const sp<Fence>& releaseFence, std::optional<uint32_t> currentMaxAcquiredBufferCount) {
+    ATRACE_CALL();
     BQA_LOGV("releaseBufferCallback %s", id.to_string().c_str());
 
     // Calculate how many buffers we need to hold before we release them back
@@ -409,16 +428,22 @@
 
     const auto numPendingBuffersToHold =
             isEGL ? std::max(0u, mMaxAcquiredBuffers - mCurrentMaxAcquiredBufferCount) : 0;
-    mPendingRelease.emplace_back(ReleasedBuffer{id, releaseFence});
+
+    auto rb = ReleasedBuffer{id, releaseFence};
+    if (std::find(mPendingRelease.begin(), mPendingRelease.end(), rb) == mPendingRelease.end()) {
+        mPendingRelease.emplace_back(rb);
+    }
 
     // Release all buffers that are beyond the ones that we need to hold
     while (mPendingRelease.size() > numPendingBuffersToHold) {
         const auto releasedBuffer = mPendingRelease.front();
         mPendingRelease.pop_front();
         releaseBuffer(releasedBuffer.callbackId, releasedBuffer.releaseFence);
-        // Don't process the transactions here if mWaitForTransactionCallback is set. Instead, let
-        // onFrameAvailable handle processing them since it will merge with the syncTransaction.
-        if (!mWaitForTransactionCallback) {
+        // Don't process the transactions here if mSyncedFrameNumbers is not empty. That means
+        // are still transactions that have sync buffers in them that have not been applied or
+        // dropped. Instead, let onFrameAvailable handle processing them since it will merge with
+        // the syncTransaction.
+        if (mSyncedFrameNumbers.empty()) {
             acquireNextBufferLocked(std::nullopt);
         }
     }
@@ -442,6 +467,9 @@
     BQA_LOGV("released %s", callbackId.to_string().c_str());
     mBufferItemConsumer->releaseBuffer(it->second, releaseFence);
     mSubmitted.erase(it);
+    // Remove the frame number from mSyncedFrameNumbers since we can get a release callback
+    // without getting a transaction committed if the buffer was dropped.
+    mSyncedFrameNumbers.erase(callbackId.framenumber);
 }
 
 void BLASTBufferQueue::acquireNextBufferLocked(
@@ -608,7 +636,7 @@
 }
 
 void BLASTBufferQueue::flushAndWaitForFreeBuffer(std::unique_lock<std::mutex>& lock) {
-    if (mWaitForTransactionCallback && mNumFrameAvailable > 0) {
+    if (!mSyncedFrameNumbers.empty() && mNumFrameAvailable > 0) {
         // We are waiting on a previous sync's transaction callback so allow another sync
         // transaction to proceed.
         //
@@ -635,6 +663,8 @@
 void BLASTBufferQueue::onFrameAvailable(const BufferItem& item) {
     std::function<void(SurfaceComposerClient::Transaction*)> prevCallback = nullptr;
     SurfaceComposerClient::Transaction* prevTransaction = nullptr;
+    bool waitForTransactionCallback = !mSyncedFrameNumbers.empty();
+
     {
         BBQ_TRACE();
         std::unique_lock _lock{mMutex};
@@ -666,7 +696,7 @@
 
         // add to shadow queue
         mNumFrameAvailable++;
-        if (mWaitForTransactionCallback && mNumFrameAvailable >= 2) {
+        if (waitForTransactionCallback && mNumFrameAvailable >= 2) {
             acquireAndReleaseBuffer();
         }
         ATRACE_INT(mQueuedBufferTrace.c_str(),
@@ -683,14 +713,14 @@
             incStrong((void*)transactionCommittedCallbackThunk);
             mSyncTransaction->addTransactionCommittedCallback(transactionCommittedCallbackThunk,
                                                               static_cast<void*>(this));
-            mWaitForTransactionCallback = true;
+            mSyncedFrameNumbers.emplace(item.mFrameNumber);
             if (mAcquireSingleBuffer) {
                 prevCallback = mTransactionReadyCallback;
                 prevTransaction = mSyncTransaction;
                 mTransactionReadyCallback = nullptr;
                 mSyncTransaction = nullptr;
             }
-        } else if (!mWaitForTransactionCallback) {
+        } else if (!waitForTransactionCallback) {
             acquireNextBufferLocked(std::nullopt);
         }
     }
@@ -1097,9 +1127,9 @@
     }
 
     // Clear sync states
-    if (mWaitForTransactionCallback) {
-        BQA_LOGD("mWaitForTransactionCallback cleared");
-        mWaitForTransactionCallback = false;
+    if (!mSyncedFrameNumbers.empty()) {
+        BQA_LOGD("mSyncedFrameNumbers cleared");
+        mSyncedFrameNumbers.clear();
     }
 
     if (mSyncTransaction != nullptr) {
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index 6b544b2..3b13708 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -1107,9 +1107,12 @@
     ATRACE_CALL();
     auto& mapper = GraphicBufferMapper::get();
     mapper.setDataspace(buffer->handle, static_cast<ui::Dataspace>(queueBufferInput.dataSpace));
-    mapper.setSmpte2086(buffer->handle, queueBufferInput.getHdrMetadata().getSmpte2086());
-    mapper.setCta861_3(buffer->handle, queueBufferInput.getHdrMetadata().getCta8613());
-    mapper.setSmpte2094_40(buffer->handle, queueBufferInput.getHdrMetadata().getHdr10Plus());
+    if (mHdrMetadataIsSet & HdrMetadata::SMPTE2086)
+        mapper.setSmpte2086(buffer->handle, queueBufferInput.getHdrMetadata().getSmpte2086());
+    if (mHdrMetadataIsSet & HdrMetadata::CTA861_3)
+        mapper.setCta861_3(buffer->handle, queueBufferInput.getHdrMetadata().getCta8613());
+    if (mHdrMetadataIsSet & HdrMetadata::HDR10PLUS)
+        mapper.setSmpte2094_40(buffer->handle, queueBufferInput.getHdrMetadata().getHdr10Plus());
 }
 
 void Surface::onBufferQueuedLocked(int slot, sp<Fence> fence,
@@ -2250,6 +2253,7 @@
 int Surface::setBuffersSmpte2086Metadata(const android_smpte2086_metadata* metadata) {
     ALOGV("Surface::setBuffersSmpte2086Metadata");
     Mutex::Autolock lock(mMutex);
+    mHdrMetadataIsSet |= HdrMetadata::SMPTE2086;
     if (metadata) {
         mHdrMetadata.smpte2086 = *metadata;
         mHdrMetadata.validTypes |= HdrMetadata::SMPTE2086;
@@ -2262,6 +2266,7 @@
 int Surface::setBuffersCta8613Metadata(const android_cta861_3_metadata* metadata) {
     ALOGV("Surface::setBuffersCta8613Metadata");
     Mutex::Autolock lock(mMutex);
+    mHdrMetadataIsSet |= HdrMetadata::CTA861_3;
     if (metadata) {
         mHdrMetadata.cta8613 = *metadata;
         mHdrMetadata.validTypes |= HdrMetadata::CTA861_3;
@@ -2274,6 +2279,7 @@
 int Surface::setBuffersHdr10PlusMetadata(const size_t size, const uint8_t* metadata) {
     ALOGV("Surface::setBuffersBlobMetadata");
     Mutex::Autolock lock(mMutex);
+    mHdrMetadataIsSet |= HdrMetadata::HDR10PLUS;
     if (size > 0) {
         mHdrMetadata.hdr10plus.assign(metadata, metadata + size);
         mHdrMetadata.validTypes |= HdrMetadata::HDR10PLUS;
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 47d801a..0f5192d 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -352,7 +352,8 @@
                                       transactionStats.latchTime, surfaceStats.acquireTimeOrFence,
                                       transactionStats.presentFence,
                                       surfaceStats.previousReleaseFence, surfaceStats.transformHint,
-                                      surfaceStats.eventStats);
+                                      surfaceStats.eventStats,
+                                      surfaceStats.currentMaxAcquiredBufferCount);
             }
 
             callbackFunction(transactionStats.latchTime, transactionStats.presentFence,
@@ -377,7 +378,8 @@
                                       transactionStats.latchTime, surfaceStats.acquireTimeOrFence,
                                       transactionStats.presentFence,
                                       surfaceStats.previousReleaseFence, surfaceStats.transformHint,
-                                      surfaceStats.eventStats);
+                                      surfaceStats.eventStats,
+                                      surfaceStats.currentMaxAcquiredBufferCount);
                 if (callbacksMap[callbackId].surfaceControls[surfaceStats.surfaceControl]) {
                     callbacksMap[callbackId]
                             .surfaceControls[surfaceStats.surfaceControl]
@@ -897,6 +899,10 @@
     mApplyToken = nullptr;
 }
 
+uint64_t SurfaceComposerClient::Transaction::getId() {
+    return mId;
+}
+
 void SurfaceComposerClient::doUncacheBufferTransaction(uint64_t cacheId) {
     sp<ISurfaceComposer> sf(ComposerService::getComposerService());
 
diff --git a/libs/gui/include/gui/BLASTBufferQueue.h b/libs/gui/include/gui/BLASTBufferQueue.h
index 9328a54..f5898d2 100644
--- a/libs/gui/include/gui/BLASTBufferQueue.h
+++ b/libs/gui/include/gui/BLASTBufferQueue.h
@@ -95,9 +95,12 @@
                                      const std::vector<SurfaceControlStats>& stats);
     void releaseBufferCallback(const ReleaseCallbackId& id, const sp<Fence>& releaseFence,
                                std::optional<uint32_t> currentMaxAcquiredBufferCount);
+    void releaseBufferCallbackLocked(const ReleaseCallbackId& id, const sp<Fence>& releaseFence,
+                               std::optional<uint32_t> currentMaxAcquiredBufferCount);
     void syncNextTransaction(std::function<void(SurfaceComposerClient::Transaction*)> callback,
                              bool acquireSingleBuffer = true);
     void stopContinuousSyncTransaction();
+
     void mergeWithNextTransaction(SurfaceComposerClient::Transaction* t, uint64_t frameNumber);
     void applyPendingTransactions(uint64_t frameNumber);
     SurfaceComposerClient::Transaction* gatherPendingTransactions(uint64_t frameNumber);
@@ -177,6 +180,12 @@
     struct ReleasedBuffer {
         ReleaseCallbackId callbackId;
         sp<Fence> releaseFence;
+        bool operator==(const ReleasedBuffer& rhs) const {
+            // Only compare Id so if we somehow got two callbacks
+            // with different fences we don't decrement mNumAcquired
+            // too far.
+            return rhs.callbackId == callbackId;
+        }
     };
     std::deque<ReleasedBuffer> mPendingRelease GUARDED_BY(mMutex);
 
@@ -251,7 +260,6 @@
     std::queue<sp<SurfaceControl>> mSurfaceControlsWithPendingCallback GUARDED_BY(mMutex);
 
     uint32_t mCurrentMaxAcquiredBufferCount;
-    bool mWaitForTransactionCallback GUARDED_BY(mMutex) = false;
 
     // Flag to determine if syncTransaction should only acquire a single buffer and then clear or
     // continue to acquire buffers until explicitly cleared
@@ -279,6 +287,8 @@
     uint64_t mLastAppliedFrameNumber = 0;
 
     std::function<void(bool)> mTransactionHangCallback;
+
+    std::unordered_set<uint64_t> mSyncedFrameNumbers GUARDED_BY(mMutex);
 };
 
 } // namespace android
diff --git a/libs/gui/include/gui/Surface.h b/libs/gui/include/gui/Surface.h
index ab9ebaa..77615fe 100644
--- a/libs/gui/include/gui/Surface.h
+++ b/libs/gui/include/gui/Surface.h
@@ -111,6 +111,24 @@
         return surface != nullptr && surface->getIGraphicBufferProducer() != nullptr;
     }
 
+    static sp<IGraphicBufferProducer> getIGraphicBufferProducer(ANativeWindow* window) {
+        int val;
+        if (window->query(window, NATIVE_WINDOW_CONCRETE_TYPE, &val) >= 0 &&
+            val == NATIVE_WINDOW_SURFACE) {
+            return ((Surface*) window)->mGraphicBufferProducer;
+        }
+        return nullptr;
+    }
+
+    static sp<IBinder> getSurfaceControlHandle(ANativeWindow* window) {
+        int val;
+        if (window->query(window, NATIVE_WINDOW_CONCRETE_TYPE, &val) >= 0 &&
+            val == NATIVE_WINDOW_SURFACE) {
+            return ((Surface*) window)->mSurfaceControlHandle;
+        }
+        return nullptr;
+    }
+
     /* Attaches a sideband buffer stream to the Surface's IGraphicBufferProducer.
      *
      * A sideband stream is a device-specific mechanism for passing buffers
@@ -462,6 +480,11 @@
     // queue operation.  There is no HDR metadata by default.
     HdrMetadata mHdrMetadata;
 
+    // mHdrMetadataIsSet is a bitfield to track which HDR metadata has been set.
+    // Prevent Surface from resetting HDR metadata that was set on a bufer when
+    // HDR metadata is not set on this Surface.
+    uint32_t mHdrMetadataIsSet{0};
+
     // mCrop is the crop rectangle that will be used for the next buffer
     // that gets queued. It is set by calling setCrop.
     Rect mCrop;
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index efbdb36..9033e17 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -65,14 +65,16 @@
     SurfaceControlStats(const sp<SurfaceControl>& sc, nsecs_t latchTime,
                         std::variant<nsecs_t, sp<Fence>> acquireTimeOrFence,
                         const sp<Fence>& presentFence, const sp<Fence>& prevReleaseFence,
-                        uint32_t hint, FrameEventHistoryStats eventStats)
+                        uint32_t hint, FrameEventHistoryStats eventStats,
+                        uint32_t currentMaxAcquiredBufferCount)
           : surfaceControl(sc),
             latchTime(latchTime),
             acquireTimeOrFence(std::move(acquireTimeOrFence)),
             presentFence(presentFence),
             previousReleaseFence(prevReleaseFence),
             transformHint(hint),
-            frameEventStats(eventStats) {}
+            frameEventStats(eventStats),
+            currentMaxAcquiredBufferCount(currentMaxAcquiredBufferCount) {}
 
     sp<SurfaceControl> surfaceControl;
     nsecs_t latchTime = -1;
@@ -81,6 +83,7 @@
     sp<Fence> previousReleaseFence;
     uint32_t transformHint = 0;
     FrameEventHistoryStats frameEventStats;
+    uint32_t currentMaxAcquiredBufferCount = 0;
 };
 
 using TransactionCompletedCallbackTakesContext =
@@ -461,6 +464,10 @@
         // Clears the contents of the transaction without applying it.
         void clear();
 
+        // Returns the current id of the transaction.
+        // The id is updated every time the transaction is applied.
+        uint64_t getId();
+
         status_t apply(bool synchronous = false, bool oneWay = false);
         // Merge another transaction in to this one, clearing other
         // as if it had been applied.
diff --git a/libs/gui/include/gui/test/CallbackUtils.h b/libs/gui/include/gui/test/CallbackUtils.h
index 62d1496..08785b4 100644
--- a/libs/gui/include/gui/test/CallbackUtils.h
+++ b/libs/gui/include/gui/test/CallbackUtils.h
@@ -135,7 +135,8 @@
         void verifySurfaceControlStats(const SurfaceControlStats& surfaceControlStats,
                                        nsecs_t latchTime) const {
             const auto& [surfaceControl, latch, acquireTimeOrFence, presentFence,
-                         previousReleaseFence, transformHint, frameEvents] = surfaceControlStats;
+                         previousReleaseFence, transformHint, frameEvents, ignore] =
+                surfaceControlStats;
 
             ASSERT_TRUE(std::holds_alternative<nsecs_t>(acquireTimeOrFence));
             ASSERT_EQ(std::get<nsecs_t>(acquireTimeOrFence) > 0,
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index cb7e94c..b993289 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -161,6 +161,10 @@
         ASSERT_EQ(numFramesSubmitted, mBlastBufferQueueAdapter->mSubmitted.size());
     }
 
+    void mergeWithNextTransaction(Transaction* merge, uint64_t frameNumber) {
+        mBlastBufferQueueAdapter->mergeWithNextTransaction(merge, frameNumber);
+    }
+
 private:
     sp<TestBLASTBufferQueue> mBlastBufferQueueAdapter;
 };
@@ -1111,6 +1115,39 @@
     ASSERT_TRUE(receivedCallback);
 }
 
+TEST_F(BLASTBufferQueueTest, SyncNextTransactionDropBuffer) {
+    uint8_t r = 255;
+    uint8_t g = 0;
+    uint8_t b = 0;
+
+    BLASTBufferQueueHelper adapter(mSurfaceControl, mDisplayWidth, mDisplayHeight);
+
+    sp<IGraphicBufferProducer> igbProducer;
+    setUpProducer(adapter, igbProducer);
+
+    Transaction sync;
+    adapter.setSyncTransaction(sync);
+    queueBuffer(igbProducer, 0, 255, 0, 0);
+
+    // Merge a transaction that has a complete callback into the next frame so we can get notified
+    // when to take a screenshot
+    CallbackHelper transactionCallback;
+    Transaction t;
+    t.addTransactionCompletedCallback(transactionCallback.function,
+                                      transactionCallback.getContext());
+    adapter.mergeWithNextTransaction(&t, 2);
+    queueBuffer(igbProducer, r, g, b, 0);
+
+    // Drop the buffer, but ensure the next one continues to get processed.
+    sync.setBuffer(mSurfaceControl, nullptr);
+
+    CallbackData callbackData;
+    transactionCallback.getCallbackData(&callbackData);
+    ASSERT_EQ(NO_ERROR, captureDisplay(mCaptureArgs, mCaptureResults));
+    ASSERT_NO_FATAL_FAILURE(
+            checkScreenCapture(r, g, b, {0, 0, (int32_t)mDisplayWidth, (int32_t)mDisplayHeight}));
+}
+
 // This test will currently fail because the old surfacecontrol will steal the last presented buffer
 // until the old surface control is destroyed. This is not necessarily a bug but to document a
 // limitation with the update API and to test any changes to make the api more robust. The current
diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index c6cdeb7..2637f59 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -1184,18 +1184,23 @@
     std::vector<sp<IGraphicBufferProducer>> mProducers;
 };
 
-TEST_F(MultiDisplayTests, drop_input_if_layer_on_invalid_display) {
+TEST_F(MultiDisplayTests, drop_touch_if_layer_on_invalid_display) {
     ui::LayerStack layerStack = ui::LayerStack::fromValue(42);
     // Do not create a display associated with the LayerStack.
     std::unique_ptr<InputSurface> surface = makeSurface(100, 100);
     surface->doTransaction([&](auto &t, auto &sc) { t.setLayerStack(sc, layerStack); });
     surface->showAt(100, 100);
 
+    // Touches should be dropped if the layer is on an invalid display.
     injectTapOnDisplay(101, 101, layerStack.id);
-    surface->requestFocus(layerStack.id);
-    injectKeyOnDisplay(AKEYCODE_V, layerStack.id);
-
     EXPECT_EQ(surface->consumeEvent(100), nullptr);
+
+    // However, we still let the window be focused and receive keys.
+    surface->requestFocus(layerStack.id);
+    surface->assertFocusChange(true);
+
+    injectKeyOnDisplay(AKEYCODE_V, layerStack.id);
+    surface->expectKey(AKEYCODE_V);
 }
 
 TEST_F(MultiDisplayTests, virtual_display_receives_input) {
diff --git a/libs/input/Input.cpp b/libs/input/Input.cpp
index 4127f7c..2b7483d 100644
--- a/libs/input/Input.cpp
+++ b/libs/input/Input.cpp
@@ -64,9 +64,10 @@
 }
 
 bool shouldDisregardTransformation(uint32_t source) {
-    // Do not apply any transformations to axes from joysticks or touchpads.
+    // Do not apply any transformations to axes from joysticks, touchpads, or relative mice.
     return isFromSource(source, AINPUT_SOURCE_CLASS_JOYSTICK) ||
-            isFromSource(source, AINPUT_SOURCE_CLASS_POSITION);
+            isFromSource(source, AINPUT_SOURCE_CLASS_POSITION) ||
+            isFromSource(source, AINPUT_SOURCE_MOUSE_RELATIVE);
 }
 
 bool shouldDisregardOffset(uint32_t source) {
@@ -89,6 +90,25 @@
     }
 }
 
+const char* motionToolTypeToString(int32_t toolType) {
+    switch (toolType) {
+        case AMOTION_EVENT_TOOL_TYPE_UNKNOWN:
+            return "UNKNOWN";
+        case AMOTION_EVENT_TOOL_TYPE_FINGER:
+            return "FINGER";
+        case AMOTION_EVENT_TOOL_TYPE_STYLUS:
+            return "STYLUS";
+        case AMOTION_EVENT_TOOL_TYPE_MOUSE:
+            return "MOUSE";
+        case AMOTION_EVENT_TOOL_TYPE_ERASER:
+            return "ERASER";
+        case AMOTION_EVENT_TOOL_TYPE_PALM:
+            return "PALM";
+        default:
+            return "INVALID";
+    }
+}
+
 // --- IdGenerator ---
 IdGenerator::IdGenerator(Source source) : mSource(source) {}
 
diff --git a/libs/input/tests/InputEvent_test.cpp b/libs/input/tests/InputEvent_test.cpp
index a92016b..4b31246 100644
--- a/libs/input/tests/InputEvent_test.cpp
+++ b/libs/input/tests/InputEvent_test.cpp
@@ -715,10 +715,10 @@
 }
 
 TEST_F(MotionEventTest, JoystickAndTouchpadAreNotTransformed) {
-    constexpr static std::array kNonTransformedSources = {std::pair(AINPUT_SOURCE_TOUCHPAD,
-                                                                    AMOTION_EVENT_ACTION_DOWN),
-                                                          std::pair(AINPUT_SOURCE_JOYSTICK,
-                                                                    AMOTION_EVENT_ACTION_MOVE)};
+    constexpr static std::array kNonTransformedSources =
+            {std::pair(AINPUT_SOURCE_TOUCHPAD, AMOTION_EVENT_ACTION_DOWN),
+             std::pair(AINPUT_SOURCE_JOYSTICK, AMOTION_EVENT_ACTION_MOVE),
+             std::pair(AINPUT_SOURCE_MOUSE_RELATIVE, AMOTION_EVENT_ACTION_MOVE)};
     // Create a rotate-90 transform with an offset (like a window which isn't fullscreen).
     ui::Transform transform(ui::Transform::ROT_90, 800, 400);
     transform.set(transform.tx() + 20, transform.ty() + 40);
@@ -738,7 +738,7 @@
 TEST_F(MotionEventTest, NonPointerSourcesAreNotTranslated) {
     constexpr static std::array kNonPointerSources = {std::pair(AINPUT_SOURCE_TRACKBALL,
                                                                 AMOTION_EVENT_ACTION_DOWN),
-                                                      std::pair(AINPUT_SOURCE_MOUSE_RELATIVE,
+                                                      std::pair(AINPUT_SOURCE_TOUCH_NAVIGATION,
                                                                 AMOTION_EVENT_ACTION_MOVE)};
     // Create a rotate-90 transform with an offset (like a window which isn't fullscreen).
     ui::Transform transform(ui::Transform::ROT_90, 800, 400);
diff --git a/libs/nativewindow/AHardwareBuffer.cpp b/libs/nativewindow/AHardwareBuffer.cpp
index 4a1784e..435095a 100644
--- a/libs/nativewindow/AHardwareBuffer.cpp
+++ b/libs/nativewindow/AHardwareBuffer.cpp
@@ -16,6 +16,8 @@
 
 #define LOG_TAG "AHardwareBuffer"
 
+#include <android/hardware_buffer.h>
+#include <android/hardware_buffer_aidl.h>
 #include <vndk/hardware_buffer.h>
 
 #include <errno.h>
@@ -32,6 +34,9 @@
 #include <android/hardware/graphics/common/1.1/types.h>
 #include <aidl/android/hardware/graphics/common/PixelFormat.h>
 
+// TODO: Better way to handle this
+#include "../binder/ndk/parcel_internal.h"
+
 static constexpr int kFdBufferSize = 128 * sizeof(int);  // 128 ints
 
 using namespace android;
@@ -412,6 +417,25 @@
     return OK;
 }
 
+binder_status_t AHardwareBuffer_readFromParcel(const AParcel* _Nonnull parcel,
+        AHardwareBuffer* _Nullable* _Nonnull outBuffer) {
+    if (!parcel || !outBuffer) return STATUS_BAD_VALUE;
+    auto buffer = sp<GraphicBuffer>::make();
+    status_t status = parcel->get()->read(*buffer);
+    if (status != STATUS_OK) return status;
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(buffer.get());
+    AHardwareBuffer_acquire(*outBuffer);
+    return STATUS_OK;
+}
+
+binder_status_t AHardwareBuffer_writeToParcel(const AHardwareBuffer* _Nonnull buffer,
+        AParcel* _Nonnull parcel) {
+    const GraphicBuffer* gb = AHardwareBuffer_to_GraphicBuffer(buffer);
+    if (!gb) return STATUS_BAD_VALUE;
+    if (!parcel) return STATUS_BAD_VALUE;
+    return parcel->get()->write(*gb);
+}
+
 // ----------------------------------------------------------------------------
 // VNDK functions
 // ----------------------------------------------------------------------------
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
index 18a4b2d..3762e66 100644
--- a/libs/nativewindow/ANativeWindow.cpp
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -20,10 +20,15 @@
 // from nativewindow/includes/system/window.h
 // (not to be confused with the compatibility-only window.h from system/core/includes)
 #include <system/window.h>
+#include <android/native_window_aidl.h>
 
 #include <private/android/AHardwareBufferHelpers.h>
 
+#include <log/log.h>
 #include <ui/GraphicBuffer.h>
+#include <gui/Surface.h>
+#include <gui/view/Surface.h>
+#include <android/binder_libbinder.h>
 
 using namespace android;
 
@@ -59,6 +64,13 @@
             return false;
     }
 }
+static sp<IGraphicBufferProducer> IGraphicBufferProducer_from_ANativeWindow(ANativeWindow* window) {
+    return Surface::getIGraphicBufferProducer(window);
+}
+
+static sp<IBinder> SurfaceControlHandle_from_ANativeWindow(ANativeWindow* window) {
+    return Surface::getSurfaceControlHandle(window);
+}
 
 /**************************************************************************************************
  * NDK
@@ -334,6 +346,42 @@
     return native_window_set_auto_prerotation(window, autoPrerotation);
 }
 
+binder_status_t ANativeWindow_readFromParcel(
+        const AParcel* _Nonnull parcel, ANativeWindow* _Nullable* _Nonnull outWindow) {
+    const Parcel* nativeParcel = AParcel_viewPlatformParcel(parcel);
+
+    // Use a android::view::Surface to unparcel the window
+    std::shared_ptr<android::view::Surface> shimSurface = std::shared_ptr<android::view::Surface>();
+    status_t ret = shimSurface->readFromParcel(nativeParcel);
+    if (ret != OK) {
+        ALOGE("%s: Error: Failed to create android::view::Surface from AParcel", __FUNCTION__);
+        return STATUS_BAD_VALUE;
+    }
+    sp<Surface> surface = sp<Surface>::make(
+            shimSurface->graphicBufferProducer, false, shimSurface->surfaceControlHandle);
+    ANativeWindow* anw = surface.get();
+    ANativeWindow_acquire(anw);
+    *outWindow = anw;
+    return STATUS_OK;
+}
+
+binder_status_t ANativeWindow_writeToParcel(
+        ANativeWindow* _Nonnull window, AParcel* _Nonnull parcel) {
+    int value;
+    int err = (*window->query)(window, NATIVE_WINDOW_CONCRETE_TYPE, &value);
+    if (err != OK || value != NATIVE_WINDOW_SURFACE) {
+        ALOGE("Error: ANativeWindow is not backed by Surface");
+        return STATUS_BAD_VALUE;
+    }
+    // Use a android::view::Surface to parcelize the window
+    std::shared_ptr<android::view::Surface> shimSurface = std::shared_ptr<android::view::Surface>();
+    shimSurface->graphicBufferProducer = IGraphicBufferProducer_from_ANativeWindow(window);
+    shimSurface->surfaceControlHandle = SurfaceControlHandle_from_ANativeWindow(window);
+
+    Parcel* nativeParcel = AParcel_viewPlatformParcel(parcel);
+    return shimSurface->writeToParcel(nativeParcel);
+}
+
 /**************************************************************************************************
  * apex-stable
  **************************************************************************************************/
diff --git a/libs/nativewindow/Android.bp b/libs/nativewindow/Android.bp
index cedc522..bc0bfc5 100644
--- a/libs/nativewindow/Android.bp
+++ b/libs/nativewindow/Android.bp
@@ -102,15 +102,19 @@
         "liblog",
         "libutils",
         "libui",
+        "libbinder",
+        "libbinder_ndk",
         "android.hardware.graphics.common@1.1",
     ],
 
     static_libs: [
         "libarect",
         "libgrallocusage",
+        "libgui_aidl_static",
     ],
 
     header_libs: [
+        "libgui_headers",
         "libarect_headers",
         "libnativebase_headers",
         "libnativewindow_headers",
diff --git a/libs/nativewindow/include/android/hardware_buffer_aidl.h b/libs/nativewindow/include/android/hardware_buffer_aidl.h
new file mode 100644
index 0000000..906d9c6
--- /dev/null
+++ b/libs/nativewindow/include/android/hardware_buffer_aidl.h
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file hardware_buffer_aidl.h
+ * @brief HardwareBuffer NDK AIDL glue code
+ */
+
+/**
+ * @addtogroup AHardwareBuffer
+ *
+ * Parcelable support for AHardwareBuffer. Can be used with libbinder_ndk
+ *
+ * @{
+ */
+
+#ifndef ANDROID_HARDWARE_BUFFER_AIDL_H
+#define ANDROID_HARDWARE_BUFFER_AIDL_H
+
+#include <android/binder_parcel.h>
+#include <android/hardware_buffer.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+/**
+ * Read an AHardwareBuffer from a AParcel. The output buffer will have an
+ * initial reference acquired and will need to be released with
+ * AHardwareBuffer_release.
+ *
+ * Available since API level 34.
+ *
+ * \return STATUS_OK on success
+ *         STATUS_BAD_VALUE if the parcel or outBuffer is null, or if there's an
+ *                          issue deserializing (eg, corrupted parcel)
+ *         STATUS_BAD_TYPE if the parcel's current data position is not that of
+ *                         an AHardwareBuffer type
+ *         STATUS_NO_MEMORY if an allocation fails
+ */
+binder_status_t AHardwareBuffer_readFromParcel(const AParcel* _Nonnull parcel,
+        AHardwareBuffer* _Nullable* _Nonnull outBuffer) __INTRODUCED_IN(34);
+
+/**
+ * Write an AHardwareBuffer to an AParcel.
+ *
+ * Available since API level 34.
+ *
+ * \return STATUS_OK on success.
+ *         STATUS_BAD_VALUE if either buffer or parcel is null, or if the AHardwareBuffer*
+ *                          fails to serialize (eg, internally corrupted)
+ *         STATUS_NO_MEMORY if the parcel runs out of space to store the buffer & is
+ *                          unable to allocate more
+ *         STATUS_FDS_NOT_ALLOWED if the parcel does not allow storing FDs
+ */
+binder_status_t AHardwareBuffer_writeToParcel(const AHardwareBuffer* _Nonnull buffer,
+        AParcel* _Nonnull parcel) __INTRODUCED_IN(34);
+
+__END_DECLS
+
+// Only enable the AIDL glue helper if this is C++
+#ifdef __cplusplus
+
+namespace aidl::android::hardware {
+
+/**
+ * Wrapper class that enables interop with AIDL NDK generation
+ * Takes ownership of the AHardwareBuffer* given to it in reset() and will automatically
+ * destroy it in the destructor, similar to a smart pointer container
+ */
+class HardwareBuffer {
+public:
+    HardwareBuffer() noexcept {}
+    explicit HardwareBuffer(HardwareBuffer&& other) noexcept : mBuffer(other.release()) {}
+
+    ~HardwareBuffer() {
+        reset();
+    }
+
+    binder_status_t readFromParcel(const AParcel* _Nonnull parcel) {
+        reset();
+        return AHardwareBuffer_readFromParcel(parcel, &mBuffer);
+    }
+
+    binder_status_t writeToParcel(AParcel* _Nonnull parcel) const {
+        if (!mBuffer) {
+            return STATUS_BAD_VALUE;
+        }
+        return AHardwareBuffer_writeToParcel(mBuffer, parcel);
+    }
+
+    /**
+     * Destroys any currently owned AHardwareBuffer* and takes ownership of the given
+     * AHardwareBuffer*
+     *
+     * @param buffer The buffer to take ownership of
+     */
+    void reset(AHardwareBuffer* _Nullable buffer = nullptr) noexcept {
+        if (mBuffer) {
+            AHardwareBuffer_release(mBuffer);
+            mBuffer = nullptr;
+        }
+        mBuffer = buffer;
+    }
+
+    inline AHardwareBuffer* _Nullable operator-> () const { return mBuffer;  }
+    inline AHardwareBuffer* _Nullable get() const { return mBuffer; }
+    inline explicit operator bool () const { return mBuffer != nullptr; }
+
+    HardwareBuffer& operator=(HardwareBuffer&& other) noexcept {
+        reset(other.release());
+        return *this;
+    }
+
+    /**
+     * Stops managing any contained AHardwareBuffer*, returning it to the caller. Ownership
+     * is released.
+     * @return AHardwareBuffer* or null if this was empty
+     */
+    [[nodiscard]] AHardwareBuffer* _Nullable release() noexcept {
+        AHardwareBuffer* _Nullable ret = mBuffer;
+        mBuffer = nullptr;
+        return ret;
+    }
+
+private:
+    HardwareBuffer(const HardwareBuffer& other) = delete;
+    HardwareBuffer& operator=(const HardwareBuffer& other) = delete;
+
+    AHardwareBuffer* _Nullable mBuffer = nullptr;
+};
+
+} // aidl::android::hardware
+
+#endif // __cplusplus
+
+#endif // ANDROID_HARDWARE_BUFFER_AIDL_H
+
+/** @} */
diff --git a/libs/nativewindow/include/android/native_window.h b/libs/nativewindow/include/android/native_window.h
index f0e1c4d..a593cd4 100644
--- a/libs/nativewindow/include/android/native_window.h
+++ b/libs/nativewindow/include/android/native_window.h
@@ -333,7 +333,7 @@
         __INTRODUCED_IN(31);
 
 #ifdef __cplusplus
-};
+}
 #endif
 
 #endif // ANDROID_NATIVE_WINDOW_H
diff --git a/libs/nativewindow/include/android/native_window_aidl.h b/libs/nativewindow/include/android/native_window_aidl.h
new file mode 100644
index 0000000..a252245
--- /dev/null
+++ b/libs/nativewindow/include/android/native_window_aidl.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file native_window_aidl.h
+ * @brief NativeWindow NDK AIDL glue code
+ */
+
+/**
+ * @addtogroup ANativeWindow
+ *
+ * Parcelable support for ANativeWindow. Can be used with libbinder_ndk
+ *
+ * @{
+ */
+
+#ifndef ANDROID_NATIVE_WINDOW_AIDL_H
+#define ANDROID_NATIVE_WINDOW_AIDL_H
+
+#include <android/binder_parcel.h>
+#include <android/native_window.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+/**
+ * Read an ANativeWindow from a AParcel. The output buffer will have an
+ * initial reference acquired and will need to be released with
+ * ANativeWindow_release.
+ *
+ * Available since API level 34.
+ *
+ * \return STATUS_OK on success
+ *         STATUS_BAD_VALUE if the parcel or outBuffer is null, or if there's an
+ *                          issue deserializing (eg, corrupted parcel)
+ *         STATUS_BAD_TYPE if the parcel's current data position is not that of
+ *                         an ANativeWindow type
+ *         STATUS_NO_MEMORY if an allocation fails
+ */
+binder_status_t ANativeWindow_readFromParcel(const AParcel* _Nonnull parcel,
+        ANativeWindow* _Nullable* _Nonnull outWindow) __INTRODUCED_IN(__ANDROID_API_U__);
+
+/**
+ * Write an ANativeWindow to an AParcel.
+ *
+ * Available since API level 34.
+ *
+ * \return STATUS_OK on success.
+ *         STATUS_BAD_VALUE if either buffer or parcel is null, or if the ANativeWindow*
+ *                          fails to serialize (eg, internally corrupted)
+ *         STATUS_NO_MEMORY if the parcel runs out of space to store the buffer & is
+ *                          unable to allocate more
+ *         STATUS_FDS_NOT_ALLOWED if the parcel does not allow storing FDs
+ */
+binder_status_t ANativeWindow_writeToParcel(ANativeWindow* _Nonnull window,
+        AParcel* _Nonnull parcel) __INTRODUCED_IN(__ANDROID_API_U__);
+
+__END_DECLS
+
+// Only enable the AIDL glue helper if this is C++
+#ifdef __cplusplus
+
+namespace aidl::android::hardware {
+
+/**
+ * Wrapper class that enables interop with AIDL NDK generation
+ * Takes ownership of the ANativeWindow* given to it in reset() and will automatically
+ * destroy it in the destructor, similar to a smart pointer container
+ */
+class NativeWindow {
+public:
+    NativeWindow() noexcept {}
+    explicit NativeWindow(ANativeWindow* _Nullable window) {
+        reset(window);
+    }
+
+    explicit NativeWindow(NativeWindow&& other) noexcept {
+        mWindow = other.release(); // steal ownership from r-value
+    }
+
+    ~NativeWindow() {
+        reset();
+    }
+
+    binder_status_t readFromParcel(const AParcel* _Nonnull parcel) {
+        reset();
+        return ANativeWindow_readFromParcel(parcel, &mWindow);
+    }
+
+    binder_status_t writeToParcel(AParcel* _Nonnull parcel) const {
+        if (!mWindow) {
+            return STATUS_BAD_VALUE;
+        }
+        return ANativeWindow_writeToParcel(mWindow, parcel);
+    }
+
+    /**
+     * Destroys any currently owned ANativeWindow* and takes ownership of the given
+     * ANativeWindow*
+     *
+     * @param buffer The buffer to take ownership of
+     */
+    void reset(ANativeWindow* _Nullable window = nullptr) noexcept {
+        if (mWindow) {
+            ANativeWindow_release(mWindow);
+            mWindow = nullptr;
+        }
+        if (window != nullptr) {
+            ANativeWindow_acquire(window);
+        }
+        mWindow = window;
+    }
+    inline ANativeWindow* _Nullable operator-> () const { return mWindow;  }
+    inline ANativeWindow* _Nullable get() const { return mWindow; }
+    inline explicit operator bool () const { return mWindow != nullptr; }
+
+    NativeWindow& operator=(NativeWindow&& other) noexcept {
+        mWindow = other.release(); // steal ownership from r-value
+        return *this;
+    }
+
+    /**
+     * Stops managing any contained ANativeWindow*, returning it to the caller. Ownership
+     * is released.
+     * @return ANativeWindow* or null if this was empty
+     */
+    [[nodiscard]] ANativeWindow* _Nullable release() noexcept {
+        ANativeWindow* _Nullable ret = mWindow;
+        mWindow = nullptr;
+        return ret;
+    }
+private:
+    ANativeWindow* _Nullable mWindow = nullptr;
+    NativeWindow(const NativeWindow &other) = delete;
+    NativeWindow& operator=(const NativeWindow &other) = delete;
+};
+
+} // aidl::android::hardware
+  //
+namespace aidl::android::view {
+    using Surface = aidl::android::hardware::NativeWindow;
+}
+
+#endif // __cplusplus
+
+#endif // ANDROID_NATIVE_WINDOW_AIDL_H
+
+/** @} */
diff --git a/libs/nativewindow/libnativewindow.map.txt b/libs/nativewindow/libnativewindow.map.txt
index da42a96..d9ac568 100644
--- a/libs/nativewindow/libnativewindow.map.txt
+++ b/libs/nativewindow/libnativewindow.map.txt
@@ -14,6 +14,8 @@
     AHardwareBuffer_release;
     AHardwareBuffer_sendHandleToUnixSocket;
     AHardwareBuffer_unlock;
+    AHardwareBuffer_readFromParcel; # introduced=34
+    AHardwareBuffer_writeToParcel; # introduced=34
     ANativeWindowBuffer_getHardwareBuffer; # llndk
     ANativeWindow_OemStorageGet; # llndk
     ANativeWindow_OemStorageSet; # llndk
@@ -53,6 +55,8 @@
     ANativeWindow_setUsage; # llndk
     ANativeWindow_tryAllocateBuffers; # introduced=30
     ANativeWindow_unlockAndPost;
+    ANativeWindow_readFromParcel; # introduced=UpsideDownCake
+    ANativeWindow_writeToParcel; # introduced=UpsideDownCake
   local:
     *;
 };
diff --git a/libs/sensor/Android.bp b/libs/sensor/Android.bp
index 2b93c6e..b6b9cc4 100644
--- a/libs/sensor/Android.bp
+++ b/libs/sensor/Android.bp
@@ -21,9 +21,10 @@
     default_applicable_licenses: ["frameworks_native_license"],
 }
 
-cc_library_shared {
+cc_library {
     name: "libsensor",
 
+    host_supported: true,
     cflags: [
         "-Wall",
         "-Werror",
diff --git a/libs/shaders/Android.bp b/libs/shaders/Android.bp
index 6b936de..8477479 100644
--- a/libs/shaders/Android.bp
+++ b/libs/shaders/Android.bp
@@ -28,7 +28,7 @@
     local_include_dirs: ["include"],
 
     shared_libs: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.composer3-V1-ndk",
         "android.hardware.graphics.common@1.2",
         "libnativewindow",
diff --git a/libs/shaders/tests/Android.bp b/libs/shaders/tests/Android.bp
index cf671bc..718d37b 100644
--- a/libs/shaders/tests/Android.bp
+++ b/libs/shaders/tests/Android.bp
@@ -31,7 +31,7 @@
         "libtonemap_headers",
     ],
     shared_libs: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.composer3-V1-ndk",
         "android.hardware.graphics.common@1.2",
         "libnativewindow",
diff --git a/libs/tonemap/Android.bp b/libs/tonemap/Android.bp
index 37c9824..eca051d 100644
--- a/libs/tonemap/Android.bp
+++ b/libs/tonemap/Android.bp
@@ -28,7 +28,7 @@
     local_include_dirs: ["include"],
 
     shared_libs: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.composer3-V1-ndk",
         "liblog",
         "libnativewindow",
diff --git a/libs/tonemap/tests/Android.bp b/libs/tonemap/tests/Android.bp
index 58851b4..0002d3a 100644
--- a/libs/tonemap/tests/Android.bp
+++ b/libs/tonemap/tests/Android.bp
@@ -31,7 +31,7 @@
         "libtonemap_headers",
     ],
     shared_libs: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.composer3-V1-ndk",
         "libnativewindow",
     ],
diff --git a/libs/vr/libbufferhubqueue/Android.bp b/libs/vr/libbufferhubqueue/Android.bp
deleted file mode 100644
index 0bda798..0000000
--- a/libs/vr/libbufferhubqueue/Android.bp
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright (C) 2016 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_native_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_native_license"],
-}
-
-sourceFiles = [
-    "buffer_hub_queue_client.cpp",
-    "buffer_hub_queue_parcelable.cpp",
-]
-
-includeFiles = [
-    "include",
-]
-
-staticLibraries = [
-    "libbufferhub",
-]
-
-sharedLibraries = [
-    "libbinder",
-    "libcutils",
-    "liblog",
-    "libui",
-    "libutils",
-    "libpdx_default_transport",
-]
-
-headerLibraries = [
-    "libdvr_headers",
-    "libnativebase_headers",
-]
-
-cc_library_shared {
-    name: "libbufferhubqueue",
-    cflags: [
-        "-DLOG_TAG=\"libbufferhubqueue\"",
-        "-DTRACE=0",
-        "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
-        "-Wall",
-        "-Werror",
-        "-Wno-format",
-        "-Wno-unused-parameter",
-        "-Wno-unused-variable",
-    ],
-    srcs: sourceFiles,
-    export_include_dirs: includeFiles,
-    export_static_lib_headers: staticLibraries,
-    static_libs: staticLibraries,
-    shared_libs: sharedLibraries,
-    header_libs: headerLibraries,
-}
-
-subdirs = ["benchmarks", "tests"]
diff --git a/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp b/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
deleted file mode 100644
index 2d3fa4a..0000000
--- a/libs/vr/libbufferhubqueue/buffer_hub_queue_client.cpp
+++ /dev/null
@@ -1,823 +0,0 @@
-#include "include/private/dvr/buffer_hub_queue_client.h"
-
-#include <inttypes.h>
-#include <log/log.h>
-#include <poll.h>
-#include <sys/epoll.h>
-
-#include <array>
-
-#include <pdx/default_transport/client_channel.h>
-#include <pdx/default_transport/client_channel_factory.h>
-#include <pdx/file_handle.h>
-#include <pdx/trace.h>
-
-#define RETRY_EINTR(fnc_call)                 \
-  ([&]() -> decltype(fnc_call) {              \
-    decltype(fnc_call) result;                \
-    do {                                      \
-      result = (fnc_call);                    \
-    } while (result == -1 && errno == EINTR); \
-    return result;                            \
-  })()
-
-using android::pdx::ErrorStatus;
-using android::pdx::LocalChannelHandle;
-using android::pdx::LocalHandle;
-using android::pdx::Status;
-
-namespace android {
-namespace dvr {
-
-namespace {
-
-std::pair<int32_t, int32_t> Unstuff(uint64_t value) {
-  return {static_cast<int32_t>(value >> 32),
-          static_cast<int32_t>(value & ((1ull << 32) - 1))};
-}
-
-uint64_t Stuff(int32_t a, int32_t b) {
-  const uint32_t ua = static_cast<uint32_t>(a);
-  const uint32_t ub = static_cast<uint32_t>(b);
-  return (static_cast<uint64_t>(ua) << 32) | static_cast<uint64_t>(ub);
-}
-
-}  // anonymous namespace
-
-BufferHubQueue::BufferHubQueue(LocalChannelHandle channel_handle)
-    : Client{pdx::default_transport::ClientChannel::Create(
-          std::move(channel_handle))} {
-  Initialize();
-}
-
-BufferHubQueue::BufferHubQueue(const std::string& endpoint_path)
-    : Client{
-          pdx::default_transport::ClientChannelFactory::Create(endpoint_path)} {
-  Initialize();
-}
-
-void BufferHubQueue::Initialize() {
-  int ret = epoll_fd_.Create();
-  if (ret < 0) {
-    ALOGE("BufferHubQueue::BufferHubQueue: Failed to create epoll fd: %s",
-          strerror(-ret));
-    return;
-  }
-
-  epoll_event event = {
-      .events = EPOLLIN | EPOLLET,
-      .data = {.u64 = Stuff(-1, BufferHubQueue::kEpollQueueEventIndex)}};
-  ret = epoll_fd_.Control(EPOLL_CTL_ADD, event_fd(), &event);
-  if (ret < 0) {
-    ALOGE("%s: Failed to add event fd to epoll set: %s", __FUNCTION__,
-          strerror(-ret));
-  }
-}
-
-Status<void> BufferHubQueue::ImportQueue() {
-  auto status = InvokeRemoteMethod<BufferHubRPC::GetQueueInfo>();
-  if (!status) {
-    ALOGE("%s: Failed to import queue: %s", __FUNCTION__,
-          status.GetErrorMessage().c_str());
-    return ErrorStatus(status.error());
-  } else {
-    SetupQueue(status.get());
-    return {};
-  }
-}
-
-void BufferHubQueue::SetupQueue(const QueueInfo& queue_info) {
-  is_async_ = queue_info.producer_config.is_async;
-  default_width_ = queue_info.producer_config.default_width;
-  default_height_ = queue_info.producer_config.default_height;
-  default_format_ = queue_info.producer_config.default_format;
-  user_metadata_size_ = queue_info.producer_config.user_metadata_size;
-  id_ = queue_info.id;
-}
-
-std::unique_ptr<ConsumerQueue> BufferHubQueue::CreateConsumerQueue() {
-  if (auto status = CreateConsumerQueueHandle(/*silent*/ false))
-    return std::unique_ptr<ConsumerQueue>(new ConsumerQueue(status.take()));
-  else
-    return nullptr;
-}
-
-std::unique_ptr<ConsumerQueue> BufferHubQueue::CreateSilentConsumerQueue() {
-  if (auto status = CreateConsumerQueueHandle(/*silent*/ true))
-    return std::unique_ptr<ConsumerQueue>(new ConsumerQueue(status.take()));
-  else
-    return nullptr;
-}
-
-Status<LocalChannelHandle> BufferHubQueue::CreateConsumerQueueHandle(
-    bool silent) {
-  auto status = InvokeRemoteMethod<BufferHubRPC::CreateConsumerQueue>(silent);
-  if (!status) {
-    ALOGE(
-        "BufferHubQueue::CreateConsumerQueue: Failed to create consumer queue: "
-        "%s",
-        status.GetErrorMessage().c_str());
-    return ErrorStatus(status.error());
-  }
-
-  return status;
-}
-
-pdx::Status<ConsumerQueueParcelable>
-BufferHubQueue::CreateConsumerQueueParcelable(bool silent) {
-  auto status = CreateConsumerQueueHandle(silent);
-  if (!status)
-    return status.error_status();
-
-  // A temporary consumer queue client to pull its channel parcelable.
-  auto consumer_queue =
-      std::unique_ptr<ConsumerQueue>(new ConsumerQueue(status.take()));
-  ConsumerQueueParcelable queue_parcelable(
-      consumer_queue->GetChannel()->TakeChannelParcelable());
-
-  if (!queue_parcelable.IsValid()) {
-    ALOGE("%s: Failed to create consumer queue parcelable.", __FUNCTION__);
-    return ErrorStatus(EINVAL);
-  }
-
-  return {std::move(queue_parcelable)};
-}
-
-bool BufferHubQueue::WaitForBuffers(int timeout) {
-  ATRACE_NAME("BufferHubQueue::WaitForBuffers");
-  std::array<epoll_event, kMaxEvents> events;
-
-  // Loop at least once to check for hangups.
-  do {
-    ALOGD_IF(
-        TRACE,
-        "BufferHubQueue::WaitForBuffers: queue_id=%d count=%zu capacity=%zu",
-        id(), count(), capacity());
-
-    // If there is already a buffer then just check for hangup without waiting.
-    const int ret = epoll_fd_.Wait(events.data(), events.size(),
-                                   count() == 0 ? timeout : 0);
-
-    if (ret == 0) {
-      ALOGI_IF(TRACE,
-               "BufferHubQueue::WaitForBuffers: No events before timeout: "
-               "queue_id=%d",
-               id());
-      return count() != 0;
-    }
-
-    if (ret < 0 && ret != -EINTR) {
-      ALOGE("%s: Failed to wait for buffers: %s", __FUNCTION__, strerror(-ret));
-      return false;
-    }
-
-    const int num_events = ret;
-
-    // A BufferQueue's epoll fd tracks N+1 events, where there are N events,
-    // one for each buffer in the queue, and one extra event for the queue
-    // client itself.
-    for (int i = 0; i < num_events; i++) {
-      int32_t event_fd;
-      int32_t index;
-      std::tie(event_fd, index) = Unstuff(events[i].data.u64);
-
-      PDX_TRACE_FORMAT(
-          "epoll_event|queue_id=%d;num_events=%d;event_index=%d;event_fd=%d;"
-          "slot=%d|",
-          id(), num_events, i, event_fd, index);
-
-      ALOGD_IF(TRACE,
-               "BufferHubQueue::WaitForBuffers: event %d: event_fd=%d index=%d",
-               i, event_fd, index);
-
-      if (is_buffer_event_index(index)) {
-        HandleBufferEvent(static_cast<size_t>(index), event_fd,
-                          events[i].events);
-      } else if (is_queue_event_index(index)) {
-        HandleQueueEvent(events[i].events);
-      } else {
-        ALOGW(
-            "BufferHubQueue::WaitForBuffers: Unknown event type event_fd=%d "
-            "index=%d",
-            event_fd, index);
-      }
-    }
-  } while (count() == 0 && capacity() > 0 && !hung_up());
-
-  return count() != 0;
-}
-
-Status<void> BufferHubQueue::HandleBufferEvent(size_t slot, int event_fd,
-                                               int poll_events) {
-  ATRACE_NAME("BufferHubQueue::HandleBufferEvent");
-  if (!buffers_[slot]) {
-    ALOGW("BufferHubQueue::HandleBufferEvent: Invalid buffer slot: %zu", slot);
-    return ErrorStatus(ENOENT);
-  }
-
-  auto status = buffers_[slot]->GetEventMask(poll_events);
-  if (!status) {
-    ALOGW("BufferHubQueue::HandleBufferEvent: Failed to get event mask: %s",
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  const int events = status.get();
-  PDX_TRACE_FORMAT(
-      "buffer|queue_id=%d;buffer_id=%d;slot=%zu;event_fd=%d;poll_events=%x;"
-      "events=%d|",
-      id(), buffers_[slot]->id(), slot, event_fd, poll_events, events);
-
-  if (events & EPOLLIN) {
-    return Enqueue({buffers_[slot], slot, buffers_[slot]->GetQueueIndex()});
-  } else if (events & EPOLLHUP) {
-    ALOGW(
-        "BufferHubQueue::HandleBufferEvent: Received EPOLLHUP event: slot=%zu "
-        "event_fd=%d buffer_id=%d",
-        slot, buffers_[slot]->event_fd(), buffers_[slot]->id());
-    return RemoveBuffer(slot);
-  } else {
-    ALOGW(
-        "BufferHubQueue::HandleBufferEvent: Unknown event, slot=%zu, epoll "
-        "events=%d",
-        slot, events);
-  }
-
-  return {};
-}
-
-Status<void> BufferHubQueue::HandleQueueEvent(int poll_event) {
-  ATRACE_NAME("BufferHubQueue::HandleQueueEvent");
-  auto status = GetEventMask(poll_event);
-  if (!status) {
-    ALOGW("BufferHubQueue::HandleQueueEvent: Failed to get event mask: %s",
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  const int events = status.get();
-  if (events & EPOLLIN) {
-    // Note that after buffer imports, if |count()| still returns 0, epoll
-    // wait will be tried again to acquire the newly imported buffer.
-    auto buffer_status = OnBufferAllocated();
-    if (!buffer_status) {
-      ALOGE("%s: Failed to import buffer: %s", __FUNCTION__,
-            buffer_status.GetErrorMessage().c_str());
-    }
-  } else if (events & EPOLLHUP) {
-    ALOGD_IF(TRACE, "%s: hang up event!", __FUNCTION__);
-    hung_up_ = true;
-  } else {
-    ALOGW("%s: Unknown epoll events=%x", __FUNCTION__, events);
-  }
-
-  return {};
-}
-
-Status<void> BufferHubQueue::AddBuffer(
-    const std::shared_ptr<BufferHubBase>& buffer, size_t slot) {
-  ALOGD_IF(TRACE, "%s: buffer_id=%d slot=%zu", __FUNCTION__, buffer->id(),
-           slot);
-
-  if (is_full()) {
-    ALOGE("%s: queue is at maximum capacity: %zu", __FUNCTION__, capacity_);
-    return ErrorStatus(E2BIG);
-  }
-
-  if (buffers_[slot]) {
-    // Replace the buffer if the slot is occupied. This could happen when the
-    // producer side replaced the slot with a newly allocated buffer. Remove the
-    // buffer before setting up with the new one.
-    auto remove_status = RemoveBuffer(slot);
-    if (!remove_status)
-      return remove_status.error_status();
-  }
-
-  for (const auto& event_source : buffer->GetEventSources()) {
-    epoll_event event = {.events = event_source.event_mask | EPOLLET,
-                         .data = {.u64 = Stuff(buffer->event_fd(), slot)}};
-    const int ret =
-        epoll_fd_.Control(EPOLL_CTL_ADD, event_source.event_fd, &event);
-    if (ret < 0) {
-      ALOGE("%s: Failed to add buffer to epoll set: %s", __FUNCTION__,
-            strerror(-ret));
-      return ErrorStatus(-ret);
-    }
-  }
-
-  buffers_[slot] = buffer;
-  capacity_++;
-  return {};
-}
-
-Status<void> BufferHubQueue::RemoveBuffer(size_t slot) {
-  ALOGD_IF(TRACE, "%s: slot=%zu", __FUNCTION__, slot);
-
-  if (buffers_[slot]) {
-    for (const auto& event_source : buffers_[slot]->GetEventSources()) {
-      const int ret =
-          epoll_fd_.Control(EPOLL_CTL_DEL, event_source.event_fd, nullptr);
-      if (ret < 0) {
-        ALOGE("%s: Failed to remove buffer from epoll set: %s", __FUNCTION__,
-              strerror(-ret));
-        return ErrorStatus(-ret);
-      }
-    }
-
-    // Trigger OnBufferRemoved callback if registered.
-    if (on_buffer_removed_)
-      on_buffer_removed_(buffers_[slot]);
-
-    buffers_[slot] = nullptr;
-    capacity_--;
-  }
-
-  return {};
-}
-
-Status<void> BufferHubQueue::Enqueue(Entry entry) {
-  if (!is_full()) {
-    // Find and remove the enqueued buffer from unavailable_buffers_slot if
-    // exist.
-    auto enqueued_buffer_iter = std::find_if(
-        unavailable_buffers_slot_.begin(), unavailable_buffers_slot_.end(),
-        [&entry](size_t slot) -> bool { return slot == entry.slot; });
-    if (enqueued_buffer_iter != unavailable_buffers_slot_.end()) {
-      unavailable_buffers_slot_.erase(enqueued_buffer_iter);
-    }
-
-    available_buffers_.push(std::move(entry));
-
-    // Trigger OnBufferAvailable callback if registered.
-    if (on_buffer_available_)
-      on_buffer_available_();
-
-    return {};
-  } else {
-    ALOGE("%s: Buffer queue is full!", __FUNCTION__);
-    return ErrorStatus(E2BIG);
-  }
-}
-
-Status<std::shared_ptr<BufferHubBase>> BufferHubQueue::Dequeue(int timeout,
-                                                               size_t* slot) {
-  ALOGD_IF(TRACE, "%s: count=%zu, timeout=%d", __FUNCTION__, count(), timeout);
-
-  PDX_TRACE_FORMAT("%s|count=%zu|", __FUNCTION__, count());
-
-  if (count() == 0) {
-    if (!WaitForBuffers(timeout))
-      return ErrorStatus(ETIMEDOUT);
-  }
-
-  auto& entry = available_buffers_.top();
-  PDX_TRACE_FORMAT("buffer|buffer_id=%d;slot=%zu|", entry.buffer->id(),
-                   entry.slot);
-
-  std::shared_ptr<BufferHubBase> buffer = std::move(entry.buffer);
-  *slot = entry.slot;
-
-  available_buffers_.pop();
-  unavailable_buffers_slot_.push_back(*slot);
-
-  return {std::move(buffer)};
-}
-
-void BufferHubQueue::SetBufferAvailableCallback(
-    BufferAvailableCallback callback) {
-  on_buffer_available_ = callback;
-}
-
-void BufferHubQueue::SetBufferRemovedCallback(BufferRemovedCallback callback) {
-  on_buffer_removed_ = callback;
-}
-
-pdx::Status<void> BufferHubQueue::FreeAllBuffers() {
-  // Clear all available buffers.
-  while (!available_buffers_.empty())
-    available_buffers_.pop();
-
-  pdx::Status<void> last_error;  // No error.
-  // Clear all buffers this producer queue is tracking.
-  for (size_t slot = 0; slot < BufferHubQueue::kMaxQueueCapacity; slot++) {
-    if (buffers_[slot] != nullptr) {
-      auto status = RemoveBuffer(slot);
-      if (!status) {
-        ALOGE(
-            "ProducerQueue::FreeAllBuffers: Failed to remove buffer at "
-            "slot=%zu.",
-            slot);
-        last_error = status.error_status();
-      }
-    }
-  }
-
-  return last_error;
-}
-
-ProducerQueue::ProducerQueue(LocalChannelHandle handle)
-    : BASE(std::move(handle)) {
-  auto status = ImportQueue();
-  if (!status) {
-    ALOGE("ProducerQueue::ProducerQueue: Failed to import queue: %s",
-          status.GetErrorMessage().c_str());
-    Close(-status.error());
-  }
-}
-
-ProducerQueue::ProducerQueue(const ProducerQueueConfig& config,
-                             const UsagePolicy& usage)
-    : BASE(BufferHubRPC::kClientPath) {
-  auto status =
-      InvokeRemoteMethod<BufferHubRPC::CreateProducerQueue>(config, usage);
-  if (!status) {
-    ALOGE("ProducerQueue::ProducerQueue: Failed to create producer queue: %s",
-          status.GetErrorMessage().c_str());
-    Close(-status.error());
-    return;
-  }
-
-  SetupQueue(status.get());
-}
-
-Status<std::vector<size_t>> ProducerQueue::AllocateBuffers(
-    uint32_t width, uint32_t height, uint32_t layer_count, uint32_t format,
-    uint64_t usage, size_t buffer_count) {
-  if (buffer_count == 0) {
-    return {std::vector<size_t>()};
-  }
-
-  if (capacity() + buffer_count > kMaxQueueCapacity) {
-    ALOGE(
-        "ProducerQueue::AllocateBuffers: queue is at capacity: %zu, cannot "
-        "allocate %zu more buffer(s).",
-        capacity(), buffer_count);
-    return ErrorStatus(E2BIG);
-  }
-
-  Status<std::vector<std::pair<LocalChannelHandle, size_t>>> status =
-      InvokeRemoteMethod<BufferHubRPC::ProducerQueueAllocateBuffers>(
-          width, height, layer_count, format, usage, buffer_count);
-  if (!status) {
-    ALOGE("ProducerQueue::AllocateBuffers: failed to allocate buffers: %s",
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  auto buffer_handle_slots = status.take();
-  LOG_ALWAYS_FATAL_IF(buffer_handle_slots.size() != buffer_count,
-                      "BufferHubRPC::ProducerQueueAllocateBuffers should "
-                      "return %zu buffer handle(s), but returned %zu instead.",
-                      buffer_count, buffer_handle_slots.size());
-
-  std::vector<size_t> buffer_slots;
-  buffer_slots.reserve(buffer_count);
-
-  // Bookkeeping for each buffer.
-  for (auto& hs : buffer_handle_slots) {
-    auto& buffer_handle = hs.first;
-    size_t buffer_slot = hs.second;
-
-    // Note that import might (though very unlikely) fail. If so, buffer_handle
-    // will be closed and included in returned buffer_slots.
-    if (AddBuffer(ProducerBuffer::Import(std::move(buffer_handle)),
-                  buffer_slot)) {
-      ALOGD_IF(TRACE, "ProducerQueue::AllocateBuffers: new buffer at slot: %zu",
-               buffer_slot);
-      buffer_slots.push_back(buffer_slot);
-    }
-  }
-
-  if (buffer_slots.size() != buffer_count) {
-    // Error out if the count of imported buffer(s) is not correct.
-    ALOGE(
-        "ProducerQueue::AllocateBuffers: requested to import %zu "
-        "buffers, but actually imported %zu buffers.",
-        buffer_count, buffer_slots.size());
-    return ErrorStatus(ENOMEM);
-  }
-
-  return {std::move(buffer_slots)};
-}
-
-Status<size_t> ProducerQueue::AllocateBuffer(uint32_t width, uint32_t height,
-                                             uint32_t layer_count,
-                                             uint32_t format, uint64_t usage) {
-  // We only allocate one buffer at a time.
-  constexpr size_t buffer_count = 1;
-  auto status =
-      AllocateBuffers(width, height, layer_count, format, usage, buffer_count);
-  if (!status) {
-    ALOGE("ProducerQueue::AllocateBuffer: Failed to allocate buffer: %s",
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  return {status.get()[0]};
-}
-
-Status<void> ProducerQueue::AddBuffer(
-    const std::shared_ptr<ProducerBuffer>& buffer, size_t slot) {
-  ALOGD_IF(TRACE, "ProducerQueue::AddBuffer: queue_id=%d buffer_id=%d slot=%zu",
-           id(), buffer->id(), slot);
-  // For producer buffer, we need to enqueue the newly added buffer
-  // immediately. Producer queue starts with all buffers in available state.
-  auto status = BufferHubQueue::AddBuffer(buffer, slot);
-  if (!status)
-    return status;
-
-  return BufferHubQueue::Enqueue({buffer, slot, 0ULL});
-}
-
-Status<size_t> ProducerQueue::InsertBuffer(
-    const std::shared_ptr<ProducerBuffer>& buffer) {
-  if (buffer == nullptr ||
-      !BufferHubDefs::isClientGained(buffer->buffer_state(),
-                                     buffer->client_state_mask())) {
-    ALOGE(
-        "ProducerQueue::InsertBuffer: Can only insert a buffer when it's in "
-        "gained state.");
-    return ErrorStatus(EINVAL);
-  }
-
-  auto status_or_slot =
-      InvokeRemoteMethod<BufferHubRPC::ProducerQueueInsertBuffer>(
-          buffer->cid());
-  if (!status_or_slot) {
-    ALOGE(
-        "ProducerQueue::InsertBuffer: Failed to insert producer buffer: "
-        "buffer_cid=%d, error: %s.",
-        buffer->cid(), status_or_slot.GetErrorMessage().c_str());
-    return status_or_slot.error_status();
-  }
-
-  size_t slot = status_or_slot.get();
-
-  // Note that we are calling AddBuffer() from the base class to explicitly
-  // avoid Enqueue() the ProducerBuffer.
-  auto status = BufferHubQueue::AddBuffer(buffer, slot);
-  if (!status) {
-    ALOGE("ProducerQueue::InsertBuffer: Failed to add buffer: %s.",
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-  return {slot};
-}
-
-Status<void> ProducerQueue::RemoveBuffer(size_t slot) {
-  auto status =
-      InvokeRemoteMethod<BufferHubRPC::ProducerQueueRemoveBuffer>(slot);
-  if (!status) {
-    ALOGE("%s: Failed to remove producer buffer: %s", __FUNCTION__,
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  return BufferHubQueue::RemoveBuffer(slot);
-}
-
-Status<std::shared_ptr<ProducerBuffer>> ProducerQueue::Dequeue(
-    int timeout, size_t* slot, LocalHandle* release_fence) {
-  DvrNativeBufferMetadata canonical_meta;
-  return Dequeue(timeout, slot, &canonical_meta, release_fence);
-}
-
-pdx::Status<std::shared_ptr<ProducerBuffer>> ProducerQueue::Dequeue(
-    int timeout, size_t* slot, DvrNativeBufferMetadata* out_meta,
-    pdx::LocalHandle* release_fence, bool gain_posted_buffer) {
-  ATRACE_NAME("ProducerQueue::Dequeue");
-  if (slot == nullptr || out_meta == nullptr || release_fence == nullptr) {
-    ALOGE("%s: Invalid parameter.", __FUNCTION__);
-    return ErrorStatus(EINVAL);
-  }
-
-  std::shared_ptr<ProducerBuffer> buffer;
-  Status<std::shared_ptr<BufferHubBase>> dequeue_status =
-      BufferHubQueue::Dequeue(timeout, slot);
-  if (dequeue_status.ok()) {
-    buffer = std::static_pointer_cast<ProducerBuffer>(dequeue_status.take());
-  } else {
-    if (gain_posted_buffer) {
-      Status<std::shared_ptr<ProducerBuffer>> dequeue_unacquired_status =
-          ProducerQueue::DequeueUnacquiredBuffer(slot);
-      if (!dequeue_unacquired_status.ok()) {
-        ALOGE("%s: DequeueUnacquiredBuffer returned error: %d", __FUNCTION__,
-              dequeue_unacquired_status.error());
-        return dequeue_unacquired_status.error_status();
-      }
-      buffer = dequeue_unacquired_status.take();
-    } else {
-      return dequeue_status.error_status();
-    }
-  }
-  const int ret =
-      buffer->GainAsync(out_meta, release_fence, gain_posted_buffer);
-  if (ret < 0 && ret != -EALREADY)
-    return ErrorStatus(-ret);
-
-  return {std::move(buffer)};
-}
-
-Status<std::shared_ptr<ProducerBuffer>> ProducerQueue::DequeueUnacquiredBuffer(
-    size_t* slot) {
-  if (unavailable_buffers_slot_.size() < 1) {
-    ALOGE(
-        "%s: Failed to dequeue un-acquired buffer. All buffer(s) are in "
-        "acquired state if exist.",
-        __FUNCTION__);
-    return ErrorStatus(ENOMEM);
-  }
-
-  // Find the first buffer that is not in acquired state from
-  // unavailable_buffers_slot_.
-  for (auto iter = unavailable_buffers_slot_.begin();
-       iter != unavailable_buffers_slot_.end(); iter++) {
-    std::shared_ptr<ProducerBuffer> buffer = ProducerQueue::GetBuffer(*iter);
-    if (buffer == nullptr) {
-      ALOGE("%s failed. Buffer slot %d is  null.", __FUNCTION__,
-            static_cast<int>(*slot));
-      return ErrorStatus(EIO);
-    }
-    if (!BufferHubDefs::isAnyClientAcquired(buffer->buffer_state())) {
-      *slot = *iter;
-      unavailable_buffers_slot_.erase(iter);
-      unavailable_buffers_slot_.push_back(*slot);
-      ALOGD("%s: Producer queue dequeue unacquired buffer in slot %d",
-            __FUNCTION__, static_cast<int>(*slot));
-      return {std::move(buffer)};
-    }
-  }
-  ALOGE(
-      "%s: Failed to dequeue un-acquired buffer. No un-acquired buffer exist.",
-      __FUNCTION__);
-  return ErrorStatus(EBUSY);
-}
-
-pdx::Status<ProducerQueueParcelable> ProducerQueue::TakeAsParcelable() {
-  if (capacity() != 0) {
-    ALOGE(
-        "%s: producer queue can only be taken out as a parcelable when empty. "
-        "Current queue capacity: %zu",
-        __FUNCTION__, capacity());
-    return ErrorStatus(EINVAL);
-  }
-
-  std::unique_ptr<pdx::ClientChannel> channel = TakeChannel();
-  ProducerQueueParcelable queue_parcelable(channel->TakeChannelParcelable());
-
-  // Here the queue parcelable is returned and holds the underlying system
-  // resources backing the queue; while the original client channel of this
-  // producer queue is destroyed in place so that this client can no longer
-  // provide producer operations.
-  return {std::move(queue_parcelable)};
-}
-
-/*static */
-std::unique_ptr<ConsumerQueue> ConsumerQueue::Import(
-    LocalChannelHandle handle) {
-  return std::unique_ptr<ConsumerQueue>(new ConsumerQueue(std::move(handle)));
-}
-
-ConsumerQueue::ConsumerQueue(LocalChannelHandle handle)
-    : BufferHubQueue(std::move(handle)) {
-  auto status = ImportQueue();
-  if (!status) {
-    ALOGE("%s: Failed to import queue: %s", __FUNCTION__,
-          status.GetErrorMessage().c_str());
-    Close(-status.error());
-  }
-
-  auto import_status = ImportBuffers();
-  if (import_status) {
-    ALOGI("%s: Imported %zu buffers.", __FUNCTION__, import_status.get());
-  } else {
-    ALOGE("%s: Failed to import buffers: %s", __FUNCTION__,
-          import_status.GetErrorMessage().c_str());
-  }
-}
-
-Status<size_t> ConsumerQueue::ImportBuffers() {
-  auto status = InvokeRemoteMethod<BufferHubRPC::ConsumerQueueImportBuffers>();
-  if (!status) {
-    if (status.error() == EBADR) {
-      ALOGI("%s: Queue is silent, no buffers imported.", __FUNCTION__);
-      return {0};
-    } else {
-      ALOGE("%s: Failed to import consumer buffer: %s", __FUNCTION__,
-            status.GetErrorMessage().c_str());
-      return status.error_status();
-    }
-  }
-
-  int ret;
-  Status<void> last_error;
-  size_t imported_buffers_count = 0;
-
-  auto buffer_handle_slots = status.take();
-  for (auto& buffer_handle_slot : buffer_handle_slots) {
-    ALOGD_IF(TRACE, ": buffer_handle=%d", __FUNCTION__,
-             buffer_handle_slot.first.value());
-
-    std::unique_ptr<ConsumerBuffer> consumer_buffer =
-        ConsumerBuffer::Import(std::move(buffer_handle_slot.first));
-    if (!consumer_buffer) {
-      ALOGE("%s: Failed to import buffer: slot=%zu", __FUNCTION__,
-            buffer_handle_slot.second);
-      last_error = ErrorStatus(EPIPE);
-      continue;
-    }
-
-    auto add_status =
-        AddBuffer(std::move(consumer_buffer), buffer_handle_slot.second);
-    if (!add_status) {
-      ALOGE("%s: Failed to add buffer: %s", __FUNCTION__,
-            add_status.GetErrorMessage().c_str());
-      last_error = add_status;
-    } else {
-      imported_buffers_count++;
-    }
-  }
-
-  if (imported_buffers_count > 0)
-    return {imported_buffers_count};
-  else
-    return last_error.error_status();
-}
-
-Status<void> ConsumerQueue::AddBuffer(
-    const std::shared_ptr<ConsumerBuffer>& buffer, size_t slot) {
-  ALOGD_IF(TRACE, "%s: queue_id=%d buffer_id=%d slot=%zu", __FUNCTION__, id(),
-           buffer->id(), slot);
-  return BufferHubQueue::AddBuffer(buffer, slot);
-}
-
-Status<std::shared_ptr<ConsumerBuffer>> ConsumerQueue::Dequeue(
-    int timeout, size_t* slot, void* meta, size_t user_metadata_size,
-    LocalHandle* acquire_fence) {
-  if (user_metadata_size != user_metadata_size_) {
-    ALOGE(
-        "%s: Metadata size (%zu) for the dequeuing buffer does not match "
-        "metadata size (%zu) for the queue.",
-        __FUNCTION__, user_metadata_size, user_metadata_size_);
-    return ErrorStatus(EINVAL);
-  }
-
-  DvrNativeBufferMetadata canonical_meta;
-  auto status = Dequeue(timeout, slot, &canonical_meta, acquire_fence);
-  if (!status)
-    return status.error_status();
-
-  if (meta && user_metadata_size) {
-    void* metadata_src =
-        reinterpret_cast<void*>(canonical_meta.user_metadata_ptr);
-    if (metadata_src) {
-      memcpy(meta, metadata_src, user_metadata_size);
-    } else {
-      ALOGW("%s: no user-defined metadata.", __FUNCTION__);
-    }
-  }
-
-  return status;
-}
-
-Status<std::shared_ptr<ConsumerBuffer>> ConsumerQueue::Dequeue(
-    int timeout, size_t* slot, DvrNativeBufferMetadata* out_meta,
-    pdx::LocalHandle* acquire_fence) {
-  ATRACE_NAME("ConsumerQueue::Dequeue");
-  if (slot == nullptr || out_meta == nullptr || acquire_fence == nullptr) {
-    ALOGE("%s: Invalid parameter.", __FUNCTION__);
-    return ErrorStatus(EINVAL);
-  }
-
-  auto status = BufferHubQueue::Dequeue(timeout, slot);
-  if (!status)
-    return status.error_status();
-
-  auto buffer = std::static_pointer_cast<ConsumerBuffer>(status.take());
-  const int ret = buffer->AcquireAsync(out_meta, acquire_fence);
-  if (ret < 0)
-    return ErrorStatus(-ret);
-
-  return {std::move(buffer)};
-}
-
-Status<void> ConsumerQueue::OnBufferAllocated() {
-  ALOGD_IF(TRACE, "%s: queue_id=%d", __FUNCTION__, id());
-
-  auto status = ImportBuffers();
-  if (!status) {
-    ALOGE("%s: Failed to import buffers: %s", __FUNCTION__,
-          status.GetErrorMessage().c_str());
-    return ErrorStatus(status.error());
-  } else if (status.get() == 0) {
-    ALOGW("%s: No new buffers allocated!", __FUNCTION__);
-    return ErrorStatus(ENOBUFS);
-  } else {
-    ALOGD_IF(TRACE, "%s: Imported %zu consumer buffers.", __FUNCTION__,
-             status.get());
-    return {};
-  }
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libbufferhubqueue/buffer_hub_queue_parcelable.cpp b/libs/vr/libbufferhubqueue/buffer_hub_queue_parcelable.cpp
deleted file mode 100644
index f705749..0000000
--- a/libs/vr/libbufferhubqueue/buffer_hub_queue_parcelable.cpp
+++ /dev/null
@@ -1,82 +0,0 @@
-#include "include/private/dvr/buffer_hub_queue_parcelable.h"
-
-#include <binder/Parcel.h>
-#include <pdx/default_transport/channel_parcelable.h>
-
-namespace android {
-namespace dvr {
-
-template <BufferHubQueueParcelableMagic Magic>
-bool BufferHubQueueParcelable<Magic>::IsValid() const {
-  return !!channel_parcelable_ && channel_parcelable_->IsValid();
-}
-
-template <BufferHubQueueParcelableMagic Magic>
-pdx::LocalChannelHandle BufferHubQueueParcelable<Magic>::TakeChannelHandle() {
-  if (!IsValid()) {
-    ALOGE(
-        "BufferHubQueueParcelable::TakeChannelHandle: Invalid channel parcel.");
-    return {};  // Returns an empty channel handle.
-  }
-
-  // Take channel handle out of the parcelable and reset the parcelable.
-  pdx::LocalChannelHandle handle = channel_parcelable_->TakeChannelHandle();
-  // Now channel_parcelable_ should already be invalid, but reset it to release
-  // the invalid parcelable object from unique_ptr.
-  channel_parcelable_ = nullptr;
-  return handle;
-}
-
-template <BufferHubQueueParcelableMagic Magic>
-status_t BufferHubQueueParcelable<Magic>::writeToParcel(Parcel* parcel) const {
-  if (!IsValid()) {
-    ALOGE("BufferHubQueueParcelable::writeToParcel: Invalid channel.");
-    return -EINVAL;
-  }
-
-  status_t res = parcel->writeUint32(Magic);
-  if (res != OK) {
-    ALOGE("BufferHubQueueParcelable::writeToParcel: Cannot write magic.");
-    return res;
-  }
-
-  return channel_parcelable_->writeToParcel(parcel);
-}
-
-template <BufferHubQueueParcelableMagic Magic>
-status_t BufferHubQueueParcelable<Magic>::readFromParcel(const Parcel* parcel) {
-  if (IsValid()) {
-    ALOGE(
-        "BufferHubQueueParcelable::readFromParcel: This parcelable object has "
-        "been initialized already.");
-    return -EINVAL;
-  }
-
-  uint32_t out_magic = 0;
-  status_t res = OK;
-
-  res = parcel->readUint32(&out_magic);
-  if (res != OK)
-    return res;
-
-  if (out_magic != Magic) {
-    ALOGE(
-        "BufferHubQueueParcelable::readFromParcel: Unexpected magic: 0x%x, "
-        "epxected: 0x%x",
-        out_magic, Magic);
-    return -EINVAL;
-  }
-
-  // (Re)Alocate channel parcelable object.
-  channel_parcelable_ =
-      std::make_unique<pdx::default_transport::ChannelParcelable>();
-  return channel_parcelable_->readFromParcel(parcel);
-}
-
-template class BufferHubQueueParcelable<
-    BufferHubQueueParcelableMagic::Producer>;
-template class BufferHubQueueParcelable<
-    BufferHubQueueParcelableMagic::Consumer>;
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h b/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h
deleted file mode 100644
index 74b4b3d..0000000
--- a/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_client.h
+++ /dev/null
@@ -1,476 +0,0 @@
-#ifndef ANDROID_DVR_BUFFER_HUB_QUEUE_CLIENT_H_
-#define ANDROID_DVR_BUFFER_HUB_QUEUE_CLIENT_H_
-
-#include <ui/BufferQueueDefs.h>
-
-#if defined(__clang__)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Weverything"
-#endif
-
-// The following headers are included without checking every warning.
-// TODO(b/72172820): Remove the workaround once we have enforced -Weverything
-// in these headers and their dependencies.
-#include <pdx/client.h>
-#include <pdx/status.h>
-#include <private/dvr/buffer_hub_queue_parcelable.h>
-#include <private/dvr/bufferhub_rpc.h>
-#include <private/dvr/consumer_buffer.h>
-#include <private/dvr/epoll_file_descriptor.h>
-#include <private/dvr/producer_buffer.h>
-
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
-#include <memory>
-#include <queue>
-#include <vector>
-
-namespace android {
-namespace dvr {
-
-class ConsumerQueue;
-
-// |BufferHubQueue| manages a queue of |BufferHubBase|s. Buffers are
-// automatically re-requeued when released by the remote side.
-class BufferHubQueue : public pdx::Client {
- public:
-  using BufferAvailableCallback = std::function<void()>;
-  using BufferRemovedCallback =
-      std::function<void(const std::shared_ptr<BufferHubBase>&)>;
-
-  virtual ~BufferHubQueue() {}
-
-  // Creates a new consumer queue that is attached to the producer. Returns
-  // a new consumer queue client or nullptr on failure.
-  std::unique_ptr<ConsumerQueue> CreateConsumerQueue();
-
-  // Creates a new consumer queue that is attached to the producer. This queue
-  // sets each of its imported consumer buffers to the ignored state to avoid
-  // participation in lifecycle events.
-  std::unique_ptr<ConsumerQueue> CreateSilentConsumerQueue();
-
-  // Returns whether the buffer queue is in async mode.
-  bool is_async() const { return is_async_; }
-
-  // Returns the default buffer width of this buffer queue.
-  uint32_t default_width() const { return default_width_; }
-
-  // Returns the default buffer height of this buffer queue.
-  uint32_t default_height() const { return default_height_; }
-
-  // Returns the default buffer format of this buffer queue.
-  uint32_t default_format() const { return default_format_; }
-
-  // Creates a new consumer in handle form for immediate transport over RPC.
-  pdx::Status<pdx::LocalChannelHandle> CreateConsumerQueueHandle(
-      bool silent = false);
-
-  // Creates a new consumer in parcelable form for immediate transport over
-  // Binder.
-  pdx::Status<ConsumerQueueParcelable> CreateConsumerQueueParcelable(
-      bool silent = false);
-
-  // Returns the number of buffers avaiable for dequeue.
-  size_t count() const { return available_buffers_.size(); }
-
-  // Returns the total number of buffers that the queue is tracking.
-  size_t capacity() const { return capacity_; }
-
-  // Returns the size of metadata structure associated with this queue.
-  size_t metadata_size() const { return user_metadata_size_; }
-
-  // Returns whether the buffer queue is full.
-  bool is_full() const {
-    return available_buffers_.size() >= kMaxQueueCapacity;
-  }
-
-  // Returns whether the buffer queue is connected to bufferhubd.
-  bool is_connected() const { return !!GetChannel(); }
-
-  int GetBufferId(size_t slot) const {
-    return (slot < buffers_.size() && buffers_[slot]) ? buffers_[slot]->id()
-                                                      : -1;
-  }
-
-  std::shared_ptr<BufferHubBase> GetBuffer(size_t slot) const {
-    return buffers_[slot];
-  }
-
-  pdx::Status<int> GetEventMask(int events) {
-    if (auto* client_channel = GetChannel()) {
-      return client_channel->GetEventMask(events);
-    } else {
-      return pdx::ErrorStatus(EINVAL);
-    }
-  }
-
-  // Returns an fd that signals pending queue events using
-  // EPOLLIN/POLLIN/readible. Either HandleQueueEvents or WaitForBuffers may be
-  // called to handle pending queue events.
-  int queue_fd() const { return epoll_fd_.Get(); }
-
-  // Handles any pending events, returning available buffers to the queue and
-  // reaping disconnected buffers. Returns true if successful, false if an error
-  // occurred.
-  bool HandleQueueEvents() { return WaitForBuffers(0); }
-
-  // Set buffer event callbacks, which are std::function wrappers. The caller is
-  // responsible for ensuring the validity of these callbacks' callable targets.
-  void SetBufferAvailableCallback(BufferAvailableCallback callback);
-  void SetBufferRemovedCallback(BufferRemovedCallback callback);
-
-  // The queue tracks at most this many buffers.
-  static constexpr size_t kMaxQueueCapacity =
-      android::BufferQueueDefs::NUM_BUFFER_SLOTS;
-
-  static constexpr int kNoTimeOut = -1;
-
-  int id() const { return id_; }
-  bool hung_up() const { return hung_up_; }
-
- protected:
-  explicit BufferHubQueue(pdx::LocalChannelHandle channel);
-  explicit BufferHubQueue(const std::string& endpoint_path);
-
-  // Imports the queue parameters by querying BufferHub for the parameters for
-  // this channel.
-  pdx::Status<void> ImportQueue();
-
-  // Sets up the queue with the given parameters.
-  void SetupQueue(const QueueInfo& queue_info);
-
-  // Register a buffer for management by the queue. Used by subclasses to add a
-  // buffer to internal bookkeeping.
-  pdx::Status<void> AddBuffer(const std::shared_ptr<BufferHubBase>& buffer,
-                              size_t slot);
-
-  // Called by ProducerQueue::RemoveBuffer and ConsumerQueue::RemoveBuffer only
-  // to deregister a buffer for epoll and internal bookkeeping.
-  virtual pdx::Status<void> RemoveBuffer(size_t slot);
-
-  // Free all buffers that belongs to this queue. Can only be called from
-  // producer side.
-  virtual pdx::Status<void> FreeAllBuffers();
-
-  // Dequeue a buffer from the free queue, blocking until one is available. The
-  // timeout argument specifies the number of milliseconds that |Dequeue()| will
-  // block. Specifying a timeout of -1 causes Dequeue() to block indefinitely,
-  // while specifying a timeout equal to zero cause Dequeue() to return
-  // immediately, even if no buffers are available.
-  pdx::Status<std::shared_ptr<BufferHubBase>> Dequeue(int timeout,
-                                                      size_t* slot);
-
-  // Waits for buffers to become available and adds them to the available queue.
-  bool WaitForBuffers(int timeout);
-
-  pdx::Status<void> HandleBufferEvent(size_t slot, int event_fd,
-                                      int poll_events);
-  pdx::Status<void> HandleQueueEvent(int poll_events);
-
-  // Entry in the priority queue of available buffers that stores related
-  // per-buffer data.
-  struct Entry {
-    Entry() : slot(0) {}
-    Entry(const std::shared_ptr<BufferHubBase>& in_buffer, size_t in_slot,
-          uint64_t in_index)
-        : buffer(in_buffer), slot(in_slot), index(in_index) {}
-    Entry(const std::shared_ptr<BufferHubBase>& in_buffer,
-          std::unique_ptr<uint8_t[]> in_metadata, pdx::LocalHandle in_fence,
-          size_t in_slot)
-        : buffer(in_buffer),
-          metadata(std::move(in_metadata)),
-          fence(std::move(in_fence)),
-          slot(in_slot) {}
-    Entry(Entry&&) = default;
-    Entry& operator=(Entry&&) = default;
-
-    std::shared_ptr<BufferHubBase> buffer;
-    std::unique_ptr<uint8_t[]> metadata;
-    pdx::LocalHandle fence;
-    size_t slot;
-    uint64_t index;
-  };
-
-  struct EntryComparator {
-    bool operator()(const Entry& lhs, const Entry& rhs) {
-      return lhs.index > rhs.index;
-    }
-  };
-
-  // Enqueues a buffer to the available list (Gained for producer or Acquireed
-  // for consumer).
-  pdx::Status<void> Enqueue(Entry entry);
-
-  // Called when a buffer is allocated remotely.
-  virtual pdx::Status<void> OnBufferAllocated() { return {}; }
-
-  // Size of the metadata that buffers in this queue cary.
-  size_t user_metadata_size_{0};
-
-  // Buffers and related data that are available for dequeue.
-  std::priority_queue<Entry, std::vector<Entry>, EntryComparator>
-      available_buffers_;
-
-  // Slot of the buffers that are not available for normal dequeue. For example,
-  // the slot of posted or acquired buffers in the perspective of a producer.
-  std::vector<size_t> unavailable_buffers_slot_;
-
- private:
-  void Initialize();
-
-  // Special epoll data field indicating that the epoll event refers to the
-  // queue.
-  static constexpr int64_t kEpollQueueEventIndex = -1;
-
-  static constexpr size_t kMaxEvents = 128;
-
-  // The u64 data field of an epoll event is interpreted as int64_t:
-  // When |index| >= 0 and |index| < kMaxQueueCapacity it refers to a specific
-  // element of |buffers_| as a direct index;
-  static bool is_buffer_event_index(int64_t index) {
-    return index >= 0 &&
-           index < static_cast<int64_t>(BufferHubQueue::kMaxQueueCapacity);
-  }
-
-  // When |index| == kEpollQueueEventIndex it refers to the queue itself.
-  static bool is_queue_event_index(int64_t index) {
-    return index == BufferHubQueue::kEpollQueueEventIndex;
-  }
-
-  // Whether the buffer queue is operating in Async mode.
-  // From GVR's perspective of view, this means a buffer can be acquired
-  // asynchronously by the compositor.
-  // From Android Surface's perspective of view, this is equivalent to
-  // IGraphicBufferProducer's async mode. When in async mode, a producer
-  // will never block even if consumer is running slow.
-  bool is_async_{false};
-
-  // Default buffer width that is set during ProducerQueue's creation.
-  uint32_t default_width_{1};
-
-  // Default buffer height that is set during ProducerQueue's creation.
-  uint32_t default_height_{1};
-
-  // Default buffer format that is set during ProducerQueue's creation.
-  uint32_t default_format_{1};  // PIXEL_FORMAT_RGBA_8888
-
-  // Tracks the buffers belonging to this queue. Buffers are stored according to
-  // "slot" in this vector. Each slot is a logical id of the buffer within this
-  // queue regardless of its queue position or presence in the ring buffer.
-  std::array<std::shared_ptr<BufferHubBase>, kMaxQueueCapacity> buffers_;
-
-  // Keeps track with how many buffers have been added into the queue.
-  size_t capacity_{0};
-
-  // Epoll fd used to manage buffer events.
-  EpollFileDescriptor epoll_fd_;
-
-  // Flag indicating that the other side hung up. For ProducerQueues this
-  // triggers when BufferHub dies or explicitly closes the queue channel. For
-  // ConsumerQueues this can either mean the same or that the ProducerQueue on
-  // the other end hung up.
-  bool hung_up_{false};
-
-  // Global id for the queue that is consistent across processes.
-  int id_{-1};
-
-  // Buffer event callbacks
-  BufferAvailableCallback on_buffer_available_;
-  BufferRemovedCallback on_buffer_removed_;
-
-  BufferHubQueue(const BufferHubQueue&) = delete;
-  void operator=(BufferHubQueue&) = delete;
-};
-
-class ProducerQueue : public pdx::ClientBase<ProducerQueue, BufferHubQueue> {
- public:
-  // Usage bits in |usage_set_mask| will be automatically masked on. Usage bits
-  // in |usage_clear_mask| will be automatically masked off. Note that
-  // |usage_set_mask| and |usage_clear_mask| may conflict with each other, but
-  // |usage_set_mask| takes precedence over |usage_clear_mask|. All buffer
-  // allocation through this producer queue shall not have any of the usage bits
-  // in |usage_deny_set_mask| set. Allocation calls violating this will be
-  // rejected. All buffer allocation through this producer queue must have all
-  // the usage bits in |usage_deny_clear_mask| set. Allocation calls violating
-  // this will be rejected. Note that |usage_deny_set_mask| and
-  // |usage_deny_clear_mask| shall not conflict with each other. Such
-  // configuration will be treated as invalid input on creation.
-  static std::unique_ptr<ProducerQueue> Create(
-      const ProducerQueueConfig& config, const UsagePolicy& usage) {
-    return BASE::Create(config, usage);
-  }
-
-  // Import a ProducerQueue from a channel handle.
-  static std::unique_ptr<ProducerQueue> Import(pdx::LocalChannelHandle handle) {
-    return BASE::Create(std::move(handle));
-  }
-
-  // Get a producer buffer. Note that the method doesn't check whether the
-  // buffer slot has a valid buffer that has been allocated already. When no
-  // buffer has been imported before it returns nullptr; otherwise it returns
-  // a shared pointer to a ProducerBuffer.
-  std::shared_ptr<ProducerBuffer> GetBuffer(size_t slot) const {
-    return std::static_pointer_cast<ProducerBuffer>(
-        BufferHubQueue::GetBuffer(slot));
-  }
-
-  // Batch allocate buffers. Once allocated, producer buffers are automatically
-  // enqueue'd into the ProducerQueue and available to use (i.e. in GAINED
-  // state). Upon success, returns a list of slots for each buffer allocated.
-  pdx::Status<std::vector<size_t>> AllocateBuffers(
-      uint32_t width, uint32_t height, uint32_t layer_count, uint32_t format,
-      uint64_t usage, size_t buffer_count);
-
-  // Allocate producer buffer to populate the queue. Once allocated, a producer
-  // buffer is automatically enqueue'd into the ProducerQueue and available to
-  // use (i.e. in GAINED state). Upon success, returns the slot number for the
-  // buffer allocated.
-  pdx::Status<size_t> AllocateBuffer(uint32_t width, uint32_t height,
-                                     uint32_t layer_count, uint32_t format,
-                                     uint64_t usage);
-
-  // Add a producer buffer to populate the queue. Once added, a producer buffer
-  // is available to use (i.e. in GAINED state).
-  pdx::Status<void> AddBuffer(const std::shared_ptr<ProducerBuffer>& buffer,
-                              size_t slot);
-
-  // Inserts a ProducerBuffer into the queue. On success, the method returns the
-  // |slot| number where the new buffer gets inserted. Note that the buffer
-  // being inserted should be in Gain'ed state prior to the call and it's
-  // considered as already Dequeued when the function returns.
-  pdx::Status<size_t> InsertBuffer(
-      const std::shared_ptr<ProducerBuffer>& buffer);
-
-  // Remove producer buffer from the queue.
-  pdx::Status<void> RemoveBuffer(size_t slot) override;
-
-  // Free all buffers on this producer queue.
-  pdx::Status<void> FreeAllBuffers() override {
-    return BufferHubQueue::FreeAllBuffers();
-  }
-
-  // Dequeue a producer buffer to write. The returned buffer in |Gain|'ed mode,
-  // and caller should call Post() once it's done writing to release the buffer
-  // to the consumer side.
-  // @return a buffer in gained state, which was originally in released state.
-  pdx::Status<std::shared_ptr<ProducerBuffer>> Dequeue(
-      int timeout, size_t* slot, pdx::LocalHandle* release_fence);
-
-  // Dequeue a producer buffer to write. The returned buffer in |Gain|'ed mode,
-  // and caller should call Post() once it's done writing to release the buffer
-  // to the consumer side.
-  //
-  // @param timeout to dequeue a buffer.
-  // @param slot is the slot of the output ProducerBuffer.
-  // @param release_fence for gaining a buffer.
-  // @param out_meta metadata of the output buffer.
-  // @param gain_posted_buffer whether to gain posted buffer if no released
-  //     buffer is available to gain.
-  // @return a buffer in gained state, which was originally in released state if
-  //     gain_posted_buffer is false, or in posted/released state if
-  //     gain_posted_buffer is true.
-  // TODO(b/112007999): gain_posted_buffer true is only used to prevent
-  // libdvrtracking from starving when there are non-responding clients. This
-  // gain_posted_buffer param can be removed once libdvrtracking start to use
-  // the new AHardwareBuffer API.
-  pdx::Status<std::shared_ptr<ProducerBuffer>> Dequeue(
-      int timeout, size_t* slot, DvrNativeBufferMetadata* out_meta,
-      pdx::LocalHandle* release_fence, bool gain_posted_buffer = false);
-
-  // Enqueues a producer buffer in the queue.
-  pdx::Status<void> Enqueue(const std::shared_ptr<ProducerBuffer>& buffer,
-                            size_t slot, uint64_t index) {
-    return BufferHubQueue::Enqueue({buffer, slot, index});
-  }
-
-  // Takes out the current producer queue as a binder parcelable object. Note
-  // that the queue must be empty to be exportable. After successful export, the
-  // producer queue client should no longer be used.
-  pdx::Status<ProducerQueueParcelable> TakeAsParcelable();
-
- private:
-  friend BASE;
-
-  // Constructors are automatically exposed through ProducerQueue::Create(...)
-  // static template methods inherited from ClientBase, which take the same
-  // arguments as the constructors.
-  explicit ProducerQueue(pdx::LocalChannelHandle handle);
-  ProducerQueue(const ProducerQueueConfig& config, const UsagePolicy& usage);
-
-  // Dequeue a producer buffer to write. The returned buffer in |Gain|'ed mode,
-  // and caller should call Post() once it's done writing to release the buffer
-  // to the consumer side.
-  //
-  // @param slot the slot of the returned buffer.
-  // @return a buffer in gained state, which was originally in posted state or
-  //     released state.
-  pdx::Status<std::shared_ptr<ProducerBuffer>> DequeueUnacquiredBuffer(
-      size_t* slot);
-};
-
-class ConsumerQueue : public BufferHubQueue {
- public:
-  // Get a consumer buffer. Note that the method doesn't check whether the
-  // buffer slot has a valid buffer that has been imported already. When no
-  // buffer has been imported before it returns nullptr; otherwise returns a
-  // shared pointer to a ConsumerBuffer.
-  std::shared_ptr<ConsumerBuffer> GetBuffer(size_t slot) const {
-    return std::static_pointer_cast<ConsumerBuffer>(
-        BufferHubQueue::GetBuffer(slot));
-  }
-
-  // Import a ConsumerQueue from a channel handle. |ignore_on_import| controls
-  // whether or not buffers are set to be ignored when imported. This may be
-  // used to avoid participation in the buffer lifecycle by a consumer queue
-  // that is only used to spawn other consumer queues, such as in an
-  // intermediate service.
-  static std::unique_ptr<ConsumerQueue> Import(pdx::LocalChannelHandle handle);
-
-  // Import newly created buffers from the service side.
-  // Returns number of buffers successfully imported or an error.
-  pdx::Status<size_t> ImportBuffers();
-
-  // Dequeue a consumer buffer to read. The returned buffer in |Acquired|'ed
-  // mode, and caller should call Releasse() once it's done writing to release
-  // the buffer to the producer side. |meta| is passed along from BufferHub,
-  // The user of ProducerBuffer is responsible with making sure that the
-  // Dequeue() is done with the corect metadata type and size with those used
-  // when the buffer is orignally created.
-  template <typename Meta>
-  pdx::Status<std::shared_ptr<ConsumerBuffer>> Dequeue(
-      int timeout, size_t* slot, Meta* meta, pdx::LocalHandle* acquire_fence) {
-    return Dequeue(timeout, slot, meta, sizeof(*meta), acquire_fence);
-  }
-  pdx::Status<std::shared_ptr<ConsumerBuffer>> Dequeue(
-      int timeout, size_t* slot, pdx::LocalHandle* acquire_fence) {
-    return Dequeue(timeout, slot, nullptr, 0, acquire_fence);
-  }
-
-  pdx::Status<std::shared_ptr<ConsumerBuffer>> Dequeue(
-      int timeout, size_t* slot, void* meta, size_t user_metadata_size,
-      pdx::LocalHandle* acquire_fence);
-  pdx::Status<std::shared_ptr<ConsumerBuffer>> Dequeue(
-      int timeout, size_t* slot, DvrNativeBufferMetadata* out_meta,
-      pdx::LocalHandle* acquire_fence);
-
- private:
-  friend BufferHubQueue;
-
-  explicit ConsumerQueue(pdx::LocalChannelHandle handle);
-
-  // Add a consumer buffer to populate the queue. Once added, a consumer buffer
-  // is NOT available to use until the producer side |Post| it. |WaitForBuffers|
-  // will catch the |Post| and |Acquire| the buffer to make it available for
-  // consumer.
-  pdx::Status<void> AddBuffer(const std::shared_ptr<ConsumerBuffer>& buffer,
-                              size_t slot);
-
-  pdx::Status<void> OnBufferAllocated() override;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_BUFFER_HUB_QUEUE_CLIENT_H_
diff --git a/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_parcelable.h b/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_parcelable.h
deleted file mode 100644
index 36ab5f6..0000000
--- a/libs/vr/libbufferhubqueue/include/private/dvr/buffer_hub_queue_parcelable.h
+++ /dev/null
@@ -1,74 +0,0 @@
-#ifndef ANDROID_DVR_BUFFER_HUB_QUEUE_PARCELABLE_H_
-#define ANDROID_DVR_BUFFER_HUB_QUEUE_PARCELABLE_H_
-
-#if defined(__clang__)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Weverything"
-#endif
-
-// The following headers are included without checking every warning.
-// TODO(b/72172820): Remove the workaround once we have enforced -Weverything
-// in these headers and their dependencies.
-#include <pdx/channel_parcelable.h>
-
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
-namespace android {
-namespace dvr {
-
-enum BufferHubQueueParcelableMagic : uint32_t {
-  Producer = 0x62687170,  // 'bhqp'
-  Consumer = 0x62687163,  // 'bhqc'
-};
-
-template <BufferHubQueueParcelableMagic Magic>
-class BufferHubQueueParcelable : public Parcelable {
- public:
-  BufferHubQueueParcelable() = default;
-
-  BufferHubQueueParcelable(BufferHubQueueParcelable&& other) noexcept = default;
-  BufferHubQueueParcelable& operator=(BufferHubQueueParcelable&& other) noexcept {
-    channel_parcelable_ = std::move(other.channel_parcelable_);
-    return *this;
-  }
-
-  // Constructs an parcelable contains the channel parcelable.
-  explicit BufferHubQueueParcelable(
-      std::unique_ptr<pdx::ChannelParcelable> channel_parcelable)
-      : channel_parcelable_(std::move(channel_parcelable)) {}
-
-  BufferHubQueueParcelable(const BufferHubQueueParcelable&) = delete;
-  void operator=(const BufferHubQueueParcelable&) = delete;
-
-  bool IsValid() const;
-
-  // Returns a channel handle constructed from this parcelable object and takes
-  // the ownership of all resources from the parcelable object.
-  pdx::LocalChannelHandle TakeChannelHandle();
-
-  // Serializes the queue parcelable into the given parcel. Note that no system
-  // resources are getting duplicated, nor did the parcel takes ownership of the
-  // queue parcelable. Thus, the parcelable object must remain valid for the
-  // lifetime of the parcel.
-  status_t writeToParcel(Parcel* parcel) const override;
-
-  // Deserialize the queue parcelable from the given parcel. Note that system
-  // resources are duplicated from the parcel into the queue parcelable. Returns
-  // error if the targeting parcelable object is already valid.
-  status_t readFromParcel(const Parcel* parcel) override;
-
- private:
-  std::unique_ptr<pdx::ChannelParcelable> channel_parcelable_;
-};
-
-using ProducerQueueParcelable =
-    BufferHubQueueParcelable<BufferHubQueueParcelableMagic::Producer>;
-using ConsumerQueueParcelable =
-    BufferHubQueueParcelable<BufferHubQueueParcelableMagic::Consumer>;
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_BUFFER_HUB_QUEUE_PARCELABLE_H_
diff --git a/libs/vr/libbufferhubqueue/include/private/dvr/epoll_file_descriptor.h b/libs/vr/libbufferhubqueue/include/private/dvr/epoll_file_descriptor.h
deleted file mode 100644
index 2f14f7c..0000000
--- a/libs/vr/libbufferhubqueue/include/private/dvr/epoll_file_descriptor.h
+++ /dev/null
@@ -1,64 +0,0 @@
-#ifndef ANDROID_DVR_EPOLL_FILE_DESCRIPTOR_H_
-#define ANDROID_DVR_EPOLL_FILE_DESCRIPTOR_H_
-
-#include <android-base/unique_fd.h>
-#include <log/log.h>
-#include <sys/epoll.h>
-
-namespace android {
-namespace dvr {
-
-class EpollFileDescriptor {
- public:
-  static const int CTL_ADD = EPOLL_CTL_ADD;
-  static const int CTL_MOD = EPOLL_CTL_MOD;
-  static const int CTL_DEL = EPOLL_CTL_DEL;
-
-  EpollFileDescriptor() : fd_(-1) {}
-
-  // Constructs an EpollFileDescriptor from an integer file descriptor and
-  // takes ownership.
-  explicit EpollFileDescriptor(int fd) : fd_(fd) {}
-
-  bool IsValid() const { return fd_.get() >= 0; }
-
-  int Create() {
-    if (IsValid()) {
-      ALOGW("epoll fd has already been created.");
-      return -EALREADY;
-    }
-
-    fd_.reset(epoll_create1(EPOLL_CLOEXEC));
-
-    if (fd_.get() < 0)
-      return -errno;
-    else
-      return 0;
-  }
-
-  int Control(int op, int target_fd, epoll_event* ev) {
-    if (epoll_ctl(fd_.get(), op, target_fd, ev) < 0)
-      return -errno;
-    else
-      return 0;
-  }
-
-  int Wait(epoll_event* events, int maxevents, int timeout) {
-    int ret = epoll_wait(fd_.get(), events, maxevents, timeout);
-
-    if (ret < 0)
-      return -errno;
-    else
-      return ret;
-  }
-
-  int Get() const { return fd_.get(); }
-
- private:
-  base::unique_fd fd_;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_EPOLL_FILE_DESCRIPTOR_H_
diff --git a/libs/vr/libbufferhubqueue/tests/Android.bp b/libs/vr/libbufferhubqueue/tests/Android.bp
deleted file mode 100644
index e373376..0000000
--- a/libs/vr/libbufferhubqueue/tests/Android.bp
+++ /dev/null
@@ -1,50 +0,0 @@
-
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_native_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_native_license"],
-}
-
-header_libraries = [
-    "libdvr_headers",
-]
-
-shared_libraries = [
-    "libbase",
-    "libbinder",
-    "libbufferhubqueue",
-    "libcutils",
-    "libgui",
-    "liblog",
-    "libhardware",
-    "libui",
-    "libutils",
-    "libnativewindow",
-    "libpdx_default_transport",
-]
-
-static_libraries = [
-    "libchrome",
-    "libdvrcommon",
-    "libperformance",
-]
-
-cc_test {
-    srcs: ["buffer_hub_queue-test.cpp"],
-    header_libs: header_libraries,
-    static_libs: static_libraries,
-    shared_libs: shared_libraries,
-    cflags: [
-        "-DLOG_TAG=\"buffer_hub_queue-test\"",
-        "-DTRACE=0",
-        "-O0",
-        "-g",
-        "-Wall",
-        "-Werror",
-        "-Wno-error=sign-compare", // to fix later
-    ],
-    name: "buffer_hub_queue-test",
-}
diff --git a/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp b/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp
deleted file mode 100644
index 6ae603b..0000000
--- a/libs/vr/libbufferhubqueue/tests/buffer_hub_queue-test.cpp
+++ /dev/null
@@ -1,1083 +0,0 @@
-#include <base/logging.h>
-#include <binder/Parcel.h>
-#include <dvr/dvr_api.h>
-#include <private/dvr/buffer_hub_queue_client.h>
-#include <private/dvr/consumer_buffer.h>
-#include <private/dvr/producer_buffer.h>
-
-#include <gtest/gtest.h>
-#include <poll.h>
-#include <sys/eventfd.h>
-
-#include <vector>
-
-// Enable/disable debug logging.
-#define TRACE 0
-
-namespace android {
-namespace dvr {
-
-using pdx::LocalChannelHandle;
-using pdx::LocalHandle;
-
-namespace {
-
-constexpr uint32_t kBufferWidth = 100;
-constexpr uint32_t kBufferHeight = 1;
-constexpr uint32_t kBufferLayerCount = 1;
-constexpr uint32_t kBufferFormat = HAL_PIXEL_FORMAT_BLOB;
-constexpr uint64_t kBufferUsage = GRALLOC_USAGE_SW_READ_RARELY;
-constexpr int kTimeoutMs = 100;
-constexpr int kNoTimeout = 0;
-
-class BufferHubQueueTest : public ::testing::Test {
- public:
-  bool CreateProducerQueue(const ProducerQueueConfig& config,
-                           const UsagePolicy& usage) {
-    producer_queue_ = ProducerQueue::Create(config, usage);
-    return producer_queue_ != nullptr;
-  }
-
-  bool CreateConsumerQueue() {
-    if (producer_queue_) {
-      consumer_queue_ = producer_queue_->CreateConsumerQueue();
-      return consumer_queue_ != nullptr;
-    } else {
-      return false;
-    }
-  }
-
-  bool CreateQueues(const ProducerQueueConfig& config,
-                    const UsagePolicy& usage) {
-    return CreateProducerQueue(config, usage) && CreateConsumerQueue();
-  }
-
-  void AllocateBuffer(size_t* slot_out = nullptr) {
-    // Create producer buffer.
-    auto status = producer_queue_->AllocateBuffer(kBufferWidth, kBufferHeight,
-                                                  kBufferLayerCount,
-                                                  kBufferFormat, kBufferUsage);
-
-    ASSERT_TRUE(status.ok());
-    size_t slot = status.take();
-    if (slot_out)
-      *slot_out = slot;
-  }
-
-  bool WaitAndHandleOnce(BufferHubQueue* queue, int timeout_ms) {
-    pollfd pfd{queue->queue_fd(), POLLIN, 0};
-    int ret;
-    do {
-      ret = poll(&pfd, 1, timeout_ms);
-    } while (ret == -1 && errno == EINTR);
-
-    if (ret < 0) {
-      ALOGW("Failed to poll queue %d's event fd, error: %s.", queue->id(),
-            strerror(errno));
-      return false;
-    } else if (ret == 0) {
-      return false;
-    }
-    return queue->HandleQueueEvents();
-  }
-
- protected:
-  ProducerQueueConfigBuilder config_builder_;
-  std::unique_ptr<ProducerQueue> producer_queue_;
-  std::unique_ptr<ConsumerQueue> consumer_queue_;
-};
-
-TEST_F(BufferHubQueueTest, TestDequeue) {
-  const int64_t nb_dequeue_times = 16;
-
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  // Allocate only one buffer.
-  AllocateBuffer();
-
-  // But dequeue multiple times.
-  for (int64_t i = 0; i < nb_dequeue_times; i++) {
-    size_t slot;
-    LocalHandle fence;
-    DvrNativeBufferMetadata mi, mo;
-
-    // Producer gains a buffer.
-    auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    EXPECT_TRUE(p1_status.ok());
-    auto p1 = p1_status.take();
-    ASSERT_NE(p1, nullptr);
-
-    // Producer posts the buffer.
-    mi.index = i;
-    EXPECT_EQ(p1->PostAsync(&mi, LocalHandle()), 0);
-
-    // Consumer acquires a buffer.
-    auto c1_status = consumer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    EXPECT_TRUE(c1_status.ok()) << c1_status.GetErrorMessage();
-    auto c1 = c1_status.take();
-    ASSERT_NE(c1, nullptr);
-    EXPECT_EQ(mi.index, i);
-    EXPECT_EQ(mo.index, i);
-
-    // Consumer releases the buffer.
-    EXPECT_EQ(c1->ReleaseAsync(&mi, LocalHandle()), 0);
-  }
-}
-
-TEST_F(BufferHubQueueTest,
-       TestDequeuePostedBufferIfNoAvailableReleasedBuffer_withConsumerBuffer) {
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  // Allocate 3 buffers to use.
-  const size_t test_queue_capacity = 3;
-  for (int64_t i = 0; i < test_queue_capacity; i++) {
-    AllocateBuffer();
-  }
-  EXPECT_EQ(producer_queue_->capacity(), test_queue_capacity);
-
-  size_t producer_slot, consumer_slot;
-  LocalHandle fence;
-  DvrNativeBufferMetadata mi, mo;
-
-  // Producer posts 2 buffers and remember their posted sequence.
-  std::deque<size_t> posted_slots;
-  for (int64_t i = 0; i < 2; i++) {
-    auto p1_status =
-        producer_queue_->Dequeue(kTimeoutMs, &producer_slot, &mo, &fence, true);
-    EXPECT_TRUE(p1_status.ok());
-    auto p1 = p1_status.take();
-    ASSERT_NE(p1, nullptr);
-
-    // Producer should not be gaining posted buffer when there are still
-    // available buffers to gain.
-    auto found_iter =
-        std::find(posted_slots.begin(), posted_slots.end(), producer_slot);
-    EXPECT_EQ(found_iter, posted_slots.end());
-    posted_slots.push_back(producer_slot);
-
-    // Producer posts the buffer.
-    mi.index = i;
-    EXPECT_EQ(0, p1->PostAsync(&mi, LocalHandle()));
-  }
-
-  // Consumer acquires one buffer.
-  auto c1_status =
-      consumer_queue_->Dequeue(kTimeoutMs, &consumer_slot, &mo, &fence);
-  EXPECT_TRUE(c1_status.ok());
-  auto c1 = c1_status.take();
-  ASSERT_NE(c1, nullptr);
-  // Consumer should get the oldest posted buffer. No checks here.
-  // posted_slots[0] should be in acquired state now.
-  EXPECT_EQ(mo.index, 0);
-  // Consumer releases the buffer.
-  EXPECT_EQ(c1->ReleaseAsync(&mi, LocalHandle()), 0);
-  // posted_slots[0] should be in released state now.
-
-  // Producer gain and post 2 buffers.
-  for (int64_t i = 0; i < 2; i++) {
-    auto p1_status =
-        producer_queue_->Dequeue(kTimeoutMs, &producer_slot, &mo, &fence, true);
-    EXPECT_TRUE(p1_status.ok());
-    auto p1 = p1_status.take();
-    ASSERT_NE(p1, nullptr);
-
-    // The gained buffer should be the one in released state or the one haven't
-    // been use.
-    EXPECT_NE(posted_slots[1], producer_slot);
-
-    mi.index = i + 2;
-    EXPECT_EQ(0, p1->PostAsync(&mi, LocalHandle()));
-  }
-
-  // Producer gains a buffer.
-  auto p1_status =
-      producer_queue_->Dequeue(kTimeoutMs, &producer_slot, &mo, &fence, true);
-  EXPECT_TRUE(p1_status.ok());
-  auto p1 = p1_status.take();
-  ASSERT_NE(p1, nullptr);
-
-  // The gained buffer should be the oldest posted buffer.
-  EXPECT_EQ(posted_slots[1], producer_slot);
-
-  // Producer posts the buffer.
-  mi.index = 4;
-  EXPECT_EQ(0, p1->PostAsync(&mi, LocalHandle()));
-}
-
-TEST_F(BufferHubQueueTest,
-       TestDequeuePostedBufferIfNoAvailableReleasedBuffer_noConsumerBuffer) {
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  // Allocate 4 buffers to use.
-  const size_t test_queue_capacity = 4;
-  for (int64_t i = 0; i < test_queue_capacity; i++) {
-    AllocateBuffer();
-  }
-  EXPECT_EQ(producer_queue_->capacity(), test_queue_capacity);
-
-  // Post all allowed buffers and remember their posted sequence.
-  std::deque<size_t> posted_slots;
-  for (int64_t i = 0; i < test_queue_capacity; i++) {
-    size_t slot;
-    LocalHandle fence;
-    DvrNativeBufferMetadata mi, mo;
-
-    // Producer gains a buffer.
-    auto p1_status =
-        producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence, true);
-    EXPECT_TRUE(p1_status.ok());
-    auto p1 = p1_status.take();
-    ASSERT_NE(p1, nullptr);
-
-    // Producer should not be gaining posted buffer when there are still
-    // available buffers to gain.
-    auto found_iter = std::find(posted_slots.begin(), posted_slots.end(), slot);
-    EXPECT_EQ(found_iter, posted_slots.end());
-    posted_slots.push_back(slot);
-
-    // Producer posts the buffer.
-    mi.index = i;
-    EXPECT_EQ(p1->PostAsync(&mi, LocalHandle()), 0);
-  }
-
-  // Gain posted buffers in sequence.
-  const int64_t nb_dequeue_all_times = 2;
-  for (int j = 0; j < nb_dequeue_all_times; ++j) {
-    for (int i = 0; i < test_queue_capacity; ++i) {
-      size_t slot;
-      LocalHandle fence;
-      DvrNativeBufferMetadata mi, mo;
-
-      // Producer gains a buffer.
-      auto p1_status =
-          producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence, true);
-      EXPECT_TRUE(p1_status.ok());
-      auto p1 = p1_status.take();
-      ASSERT_NE(p1, nullptr);
-
-      // The gained buffer should be the oldest posted buffer.
-      EXPECT_EQ(posted_slots[i], slot);
-
-      // Producer posts the buffer.
-      mi.index = i + test_queue_capacity * (j + 1);
-      EXPECT_EQ(p1->PostAsync(&mi, LocalHandle()), 0);
-    }
-  }
-}
-
-TEST_F(BufferHubQueueTest, TestProducerConsumer) {
-  const size_t kBufferCount = 16;
-  size_t slot;
-  DvrNativeBufferMetadata mi, mo;
-  LocalHandle fence;
-
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  for (size_t i = 0; i < kBufferCount; i++) {
-    AllocateBuffer();
-
-    // Producer queue has all the available buffers on initialize.
-    ASSERT_EQ(producer_queue_->count(), i + 1);
-    ASSERT_EQ(producer_queue_->capacity(), i + 1);
-
-    // Consumer queue has no avaiable buffer on initialize.
-    ASSERT_EQ(consumer_queue_->count(), 0U);
-    // Consumer queue does not import buffers until a dequeue is issued.
-    ASSERT_EQ(consumer_queue_->capacity(), i);
-    // Dequeue returns timeout since no buffer is ready to consumer, but
-    // this implicitly triggers buffer import and bump up |capacity|.
-    auto status = consumer_queue_->Dequeue(kNoTimeout, &slot, &mo, &fence);
-    ASSERT_FALSE(status.ok());
-    ASSERT_EQ(ETIMEDOUT, status.error());
-    ASSERT_EQ(consumer_queue_->capacity(), i + 1);
-  }
-
-  // Use eventfd as a stand-in for a fence.
-  LocalHandle post_fence(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK));
-
-  for (size_t i = 0; i < kBufferCount; i++) {
-    // First time there is no buffer available to dequeue.
-    auto consumer_status =
-        consumer_queue_->Dequeue(kNoTimeout, &slot, &mo, &fence);
-    ASSERT_FALSE(consumer_status.ok());
-    ASSERT_EQ(consumer_status.error(), ETIMEDOUT);
-
-    // Make sure Producer buffer is POSTED so that it's ready to Accquire
-    // in the consumer's Dequeue() function.
-    auto producer_status =
-        producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    ASSERT_TRUE(producer_status.ok());
-    auto producer = producer_status.take();
-    ASSERT_NE(nullptr, producer);
-
-    mi.index = static_cast<int64_t>(i);
-    ASSERT_EQ(producer->PostAsync(&mi, post_fence), 0);
-
-    // Second time the just the POSTED buffer should be dequeued.
-    consumer_status = consumer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    ASSERT_TRUE(consumer_status.ok());
-    EXPECT_TRUE(fence.IsValid());
-
-    auto consumer = consumer_status.take();
-    ASSERT_NE(nullptr, consumer);
-    ASSERT_EQ(mi.index, mo.index);
-  }
-}
-
-TEST_F(BufferHubQueueTest, TestInsertBuffer) {
-  ASSERT_TRUE(CreateProducerQueue(config_builder_.Build(), UsagePolicy{}));
-
-  consumer_queue_ = producer_queue_->CreateConsumerQueue();
-  ASSERT_TRUE(consumer_queue_ != nullptr);
-  EXPECT_EQ(producer_queue_->capacity(), 0);
-  EXPECT_EQ(consumer_queue_->capacity(), 0);
-
-  std::shared_ptr<ProducerBuffer> p1 = ProducerBuffer::Create(
-      kBufferWidth, kBufferHeight, kBufferFormat, kBufferUsage, 0);
-  ASSERT_TRUE(p1 != nullptr);
-  ASSERT_EQ(p1->GainAsync(), 0);
-
-  // Inserting a posted buffer will fail.
-  DvrNativeBufferMetadata meta;
-  EXPECT_EQ(p1->PostAsync(&meta, LocalHandle()), 0);
-  auto status_or_slot = producer_queue_->InsertBuffer(p1);
-  EXPECT_FALSE(status_or_slot.ok());
-  EXPECT_EQ(status_or_slot.error(), EINVAL);
-
-  // Inserting a gained buffer will succeed.
-  std::shared_ptr<ProducerBuffer> p2 = ProducerBuffer::Create(
-      kBufferWidth, kBufferHeight, kBufferFormat, kBufferUsage);
-  ASSERT_EQ(p2->GainAsync(), 0);
-  ASSERT_TRUE(p2 != nullptr);
-  status_or_slot = producer_queue_->InsertBuffer(p2);
-  EXPECT_TRUE(status_or_slot.ok()) << status_or_slot.GetErrorMessage();
-  // This is the first buffer inserted, should take slot 0.
-  size_t slot = status_or_slot.get();
-  EXPECT_EQ(slot, 0);
-
-  // Wait and expect the consumer to kick up the newly inserted buffer.
-  WaitAndHandleOnce(consumer_queue_.get(), kTimeoutMs);
-  EXPECT_EQ(consumer_queue_->capacity(), 1ULL);
-}
-
-TEST_F(BufferHubQueueTest, TestRemoveBuffer) {
-  ASSERT_TRUE(CreateProducerQueue(config_builder_.Build(), UsagePolicy{}));
-  DvrNativeBufferMetadata mo;
-
-  // Allocate buffers.
-  const size_t kBufferCount = 4u;
-  for (size_t i = 0; i < kBufferCount; i++) {
-    AllocateBuffer();
-  }
-  ASSERT_EQ(kBufferCount, producer_queue_->count());
-  ASSERT_EQ(kBufferCount, producer_queue_->capacity());
-
-  consumer_queue_ = producer_queue_->CreateConsumerQueue();
-  ASSERT_NE(nullptr, consumer_queue_);
-
-  // Check that buffers are correctly imported on construction.
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-  EXPECT_EQ(0u, consumer_queue_->count());
-
-  // Dequeue all the buffers and keep track of them in an array. This prevents
-  // the producer queue ring buffer ref counts from interfering with the tests.
-  struct Entry {
-    std::shared_ptr<ProducerBuffer> buffer;
-    LocalHandle fence;
-    size_t slot;
-  };
-  std::array<Entry, kBufferCount> buffers;
-
-  for (size_t i = 0; i < kBufferCount; i++) {
-    Entry* entry = &buffers[i];
-    auto producer_status =
-        producer_queue_->Dequeue(kTimeoutMs, &entry->slot, &mo, &entry->fence);
-    ASSERT_TRUE(producer_status.ok());
-    entry->buffer = producer_status.take();
-    ASSERT_NE(nullptr, entry->buffer);
-  }
-
-  // Remove a buffer and make sure both queues reflect the change.
-  ASSERT_TRUE(producer_queue_->RemoveBuffer(buffers[0].slot));
-  EXPECT_EQ(kBufferCount - 1, producer_queue_->capacity());
-
-  // As long as the removed buffer is still alive the consumer queue won't know
-  // its gone.
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-  EXPECT_FALSE(consumer_queue_->HandleQueueEvents());
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-
-  // Release the removed buffer.
-  buffers[0].buffer = nullptr;
-
-  // Now the consumer queue should know it's gone.
-  EXPECT_FALSE(WaitAndHandleOnce(consumer_queue_.get(), kTimeoutMs));
-  ASSERT_EQ(kBufferCount - 1, consumer_queue_->capacity());
-
-  // Allocate a new buffer. This should take the first empty slot.
-  size_t slot;
-  AllocateBuffer(&slot);
-  ALOGE_IF(TRACE, "ALLOCATE %zu", slot);
-  EXPECT_EQ(buffers[0].slot, slot);
-  EXPECT_EQ(kBufferCount, producer_queue_->capacity());
-
-  // The consumer queue should pick up the new buffer.
-  EXPECT_EQ(kBufferCount - 1, consumer_queue_->capacity());
-  EXPECT_FALSE(consumer_queue_->HandleQueueEvents());
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-
-  // Remove and allocate a buffer.
-  ASSERT_TRUE(producer_queue_->RemoveBuffer(buffers[1].slot));
-  EXPECT_EQ(kBufferCount - 1, producer_queue_->capacity());
-  buffers[1].buffer = nullptr;
-
-  AllocateBuffer(&slot);
-  ALOGE_IF(TRACE, "ALLOCATE %zu", slot);
-  EXPECT_EQ(buffers[1].slot, slot);
-  EXPECT_EQ(kBufferCount, producer_queue_->capacity());
-
-  // The consumer queue should pick up the new buffer but the count shouldn't
-  // change.
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-  EXPECT_FALSE(consumer_queue_->HandleQueueEvents());
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-
-  // Remove and allocate a buffer, but don't free the buffer right away.
-  ASSERT_TRUE(producer_queue_->RemoveBuffer(buffers[2].slot));
-  EXPECT_EQ(kBufferCount - 1, producer_queue_->capacity());
-
-  AllocateBuffer(&slot);
-  ALOGE_IF(TRACE, "ALLOCATE %zu", slot);
-  EXPECT_EQ(buffers[2].slot, slot);
-  EXPECT_EQ(kBufferCount, producer_queue_->capacity());
-
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-  EXPECT_FALSE(consumer_queue_->HandleQueueEvents());
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-
-  // Release the producer buffer to trigger a POLLHUP event for an already
-  // removed buffer.
-  buffers[2].buffer = nullptr;
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-  EXPECT_FALSE(consumer_queue_->HandleQueueEvents());
-  EXPECT_EQ(kBufferCount, consumer_queue_->capacity());
-}
-
-TEST_F(BufferHubQueueTest, TestMultipleConsumers) {
-  // ProducerConfigureBuilder doesn't set Metadata{size}, which means there
-  // is no metadata associated with this BufferQueue's buffer.
-  ASSERT_TRUE(CreateProducerQueue(config_builder_.Build(), UsagePolicy{}));
-
-  // Allocate buffers.
-  const size_t kBufferCount = 4u;
-  for (size_t i = 0; i < kBufferCount; i++) {
-    AllocateBuffer();
-  }
-  ASSERT_EQ(kBufferCount, producer_queue_->count());
-
-  // Build a silent consumer queue to test multi-consumer queue features.
-  auto silent_queue = producer_queue_->CreateSilentConsumerQueue();
-  ASSERT_NE(nullptr, silent_queue);
-
-  // Check that silent queue doesn't import buffers on creation.
-  EXPECT_EQ(silent_queue->capacity(), 0U);
-
-  // Dequeue and post a buffer.
-  size_t slot;
-  LocalHandle fence;
-  DvrNativeBufferMetadata mi, mo;
-  auto producer_status =
-      producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  EXPECT_TRUE(producer_status.ok());
-  auto producer_buffer = producer_status.take();
-  ASSERT_NE(producer_buffer, nullptr);
-  EXPECT_EQ(producer_buffer->PostAsync(&mi, {}), 0);
-  // After post, check the number of remaining available buffers.
-  EXPECT_EQ(producer_queue_->count(), kBufferCount - 1);
-
-  // Currently we expect no buffer to be available prior to calling
-  // WaitForBuffers/HandleQueueEvents.
-  // TODO(eieio): Note this behavior may change in the future.
-  EXPECT_EQ(silent_queue->count(), 0U);
-  EXPECT_FALSE(silent_queue->HandleQueueEvents());
-  EXPECT_EQ(silent_queue->count(), 0U);
-
-  // Build a new consumer queue to test multi-consumer queue features.
-  consumer_queue_ = silent_queue->CreateConsumerQueue();
-  ASSERT_NE(consumer_queue_, nullptr);
-
-  // Check that buffers are correctly imported on construction.
-  EXPECT_EQ(consumer_queue_->capacity(), kBufferCount);
-  // Buffers are only imported, but their availability is not checked until
-  // first call to Dequeue().
-  EXPECT_EQ(consumer_queue_->count(), 0U);
-
-  // Reclaim released/ignored buffers.
-  EXPECT_EQ(producer_queue_->count(), kBufferCount - 1);
-
-  usleep(10000);
-  WaitAndHandleOnce(producer_queue_.get(), kTimeoutMs);
-  EXPECT_EQ(producer_queue_->count(), kBufferCount - 1);
-
-  // Post another buffer.
-  producer_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  EXPECT_TRUE(producer_status.ok());
-  producer_buffer = producer_status.take();
-  ASSERT_NE(producer_buffer, nullptr);
-  EXPECT_EQ(producer_buffer->PostAsync(&mi, {}), 0);
-
-  // Verify that the consumer queue receives it.
-  size_t consumer_queue_count = consumer_queue_->count();
-  WaitAndHandleOnce(consumer_queue_.get(), kTimeoutMs);
-  EXPECT_GT(consumer_queue_->count(), consumer_queue_count);
-
-  // Save the current consumer queue buffer count to compare after the dequeue.
-  consumer_queue_count = consumer_queue_->count();
-
-  // Dequeue and acquire/release (discard) buffers on the consumer end.
-  auto consumer_status =
-      consumer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  EXPECT_TRUE(consumer_status.ok());
-  auto consumer_buffer = consumer_status.take();
-  ASSERT_NE(consumer_buffer, nullptr);
-  consumer_buffer->Discard();
-
-  // Buffer should be returned to the producer queue without being handled by
-  // the silent consumer queue.
-  EXPECT_LT(consumer_queue_->count(), consumer_queue_count);
-  EXPECT_EQ(producer_queue_->count(), kBufferCount - 2);
-
-  WaitAndHandleOnce(producer_queue_.get(), kTimeoutMs);
-  EXPECT_EQ(producer_queue_->count(), kBufferCount - 1);
-}
-
-struct TestUserMetadata {
-  char a;
-  int32_t b;
-  int64_t c;
-};
-
-constexpr uint64_t kUserMetadataSize =
-    static_cast<uint64_t>(sizeof(TestUserMetadata));
-
-TEST_F(BufferHubQueueTest, TestUserMetadata) {
-  ASSERT_TRUE(CreateQueues(
-      config_builder_.SetMetadata<TestUserMetadata>().Build(), UsagePolicy{}));
-
-  AllocateBuffer();
-
-  std::vector<TestUserMetadata> user_metadata_list = {
-      {'0', 0, 0}, {'1', 10, 3333}, {'@', 123, 1000000000}};
-
-  for (auto user_metadata : user_metadata_list) {
-    size_t slot;
-    LocalHandle fence;
-    DvrNativeBufferMetadata mi, mo;
-
-    auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    EXPECT_TRUE(p1_status.ok());
-    auto p1 = p1_status.take();
-    ASSERT_NE(p1, nullptr);
-
-    // TODO(b/69469185): Test against metadata from consumer once we implement
-    // release metadata properly.
-    // EXPECT_EQ(mo.user_metadata_ptr, 0U);
-    // EXPECT_EQ(mo.user_metadata_size, 0U);
-
-    mi.user_metadata_size = kUserMetadataSize;
-    mi.user_metadata_ptr = reinterpret_cast<uint64_t>(&user_metadata);
-    EXPECT_EQ(p1->PostAsync(&mi, {}), 0);
-    auto c1_status = consumer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    EXPECT_TRUE(c1_status.ok()) << c1_status.GetErrorMessage();
-    auto c1 = c1_status.take();
-    ASSERT_NE(c1, nullptr);
-
-    EXPECT_EQ(mo.user_metadata_size, kUserMetadataSize);
-    auto out_user_metadata =
-        reinterpret_cast<TestUserMetadata*>(mo.user_metadata_ptr);
-    EXPECT_EQ(user_metadata.a, out_user_metadata->a);
-    EXPECT_EQ(user_metadata.b, out_user_metadata->b);
-    EXPECT_EQ(user_metadata.c, out_user_metadata->c);
-
-    // When release, empty metadata is also legit.
-    mi.user_metadata_size = 0U;
-    mi.user_metadata_ptr = 0U;
-    c1->ReleaseAsync(&mi, {});
-  }
-}
-
-TEST_F(BufferHubQueueTest, TestUserMetadataMismatch) {
-  ASSERT_TRUE(CreateQueues(
-      config_builder_.SetMetadata<TestUserMetadata>().Build(), UsagePolicy{}));
-
-  AllocateBuffer();
-
-  TestUserMetadata user_metadata;
-  size_t slot;
-  LocalHandle fence;
-  DvrNativeBufferMetadata mi, mo;
-  auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  EXPECT_TRUE(p1_status.ok());
-  auto p1 = p1_status.take();
-  ASSERT_NE(p1, nullptr);
-
-  // Post with mismatched user metadata size will fail. But the producer buffer
-  // itself should stay untouched.
-  mi.user_metadata_ptr = reinterpret_cast<uint64_t>(&user_metadata);
-  mi.user_metadata_size = kUserMetadataSize + 1;
-  EXPECT_EQ(p1->PostAsync(&mi, {}), -E2BIG);
-  // Post with the exact same user metdata size can success.
-  mi.user_metadata_ptr = reinterpret_cast<uint64_t>(&user_metadata);
-  mi.user_metadata_size = kUserMetadataSize;
-  EXPECT_EQ(p1->PostAsync(&mi, {}), 0);
-}
-
-TEST_F(BufferHubQueueTest, TestEnqueue) {
-  ASSERT_TRUE(CreateQueues(config_builder_.SetMetadata<int64_t>().Build(),
-                           UsagePolicy{}));
-  AllocateBuffer();
-
-  size_t slot;
-  LocalHandle fence;
-  DvrNativeBufferMetadata mo;
-  auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  ASSERT_TRUE(p1_status.ok());
-  auto p1 = p1_status.take();
-  ASSERT_NE(nullptr, p1);
-
-  producer_queue_->Enqueue(p1, slot, 0ULL);
-  auto c1_status = consumer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  ASSERT_FALSE(c1_status.ok());
-}
-
-TEST_F(BufferHubQueueTest, TestAllocateBuffer) {
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  size_t ps1;
-  AllocateBuffer();
-  LocalHandle fence;
-  DvrNativeBufferMetadata mi, mo;
-  auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &ps1, &mo, &fence);
-  ASSERT_TRUE(p1_status.ok());
-  auto p1 = p1_status.take();
-  ASSERT_NE(p1, nullptr);
-
-  // producer queue is exhausted
-  size_t ps2;
-  auto p2_status = producer_queue_->Dequeue(kTimeoutMs, &ps2, &mo, &fence);
-  ASSERT_FALSE(p2_status.ok());
-  ASSERT_EQ(ETIMEDOUT, p2_status.error());
-
-  // dynamically add buffer.
-  AllocateBuffer();
-  ASSERT_EQ(producer_queue_->count(), 1U);
-  ASSERT_EQ(producer_queue_->capacity(), 2U);
-
-  // now we can dequeue again
-  p2_status = producer_queue_->Dequeue(kTimeoutMs, &ps2, &mo, &fence);
-  ASSERT_TRUE(p2_status.ok());
-  auto p2 = p2_status.take();
-  ASSERT_NE(p2, nullptr);
-  ASSERT_EQ(producer_queue_->count(), 0U);
-  // p1 and p2 should have different slot number
-  ASSERT_NE(ps1, ps2);
-
-  // Consumer queue does not import buffers until |Dequeue| or |ImportBuffers|
-  // are called. So far consumer_queue_ should be empty.
-  ASSERT_EQ(consumer_queue_->count(), 0U);
-
-  int64_t seq = 1;
-  mi.index = seq;
-  ASSERT_EQ(p1->PostAsync(&mi, {}), 0);
-
-  size_t cs1, cs2;
-  auto c1_status = consumer_queue_->Dequeue(kTimeoutMs, &cs1, &mo, &fence);
-  ASSERT_TRUE(c1_status.ok()) << c1_status.GetErrorMessage();
-  auto c1 = c1_status.take();
-  ASSERT_NE(c1, nullptr);
-  ASSERT_EQ(consumer_queue_->count(), 0U);
-  ASSERT_EQ(consumer_queue_->capacity(), 2U);
-  ASSERT_EQ(cs1, ps1);
-
-  ASSERT_EQ(p2->PostAsync(&mi, {}), 0);
-  auto c2_status = consumer_queue_->Dequeue(kTimeoutMs, &cs2, &mo, &fence);
-  ASSERT_TRUE(c2_status.ok());
-  auto c2 = c2_status.take();
-  ASSERT_NE(c2, nullptr);
-  ASSERT_EQ(cs2, ps2);
-}
-
-TEST_F(BufferHubQueueTest, TestAllocateTwoBuffers) {
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-  ASSERT_EQ(producer_queue_->capacity(), 0);
-  auto status = producer_queue_->AllocateBuffers(
-      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
-      kBufferUsage, /*buffer_count=*/2);
-  ASSERT_TRUE(status.ok());
-  std::vector<size_t> buffer_slots = status.take();
-  ASSERT_EQ(buffer_slots.size(), 2);
-  ASSERT_EQ(producer_queue_->capacity(), 2);
-}
-
-TEST_F(BufferHubQueueTest, TestAllocateZeroBuffers) {
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-  ASSERT_EQ(producer_queue_->capacity(), 0);
-  auto status = producer_queue_->AllocateBuffers(
-      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
-      kBufferUsage, /*buffer_count=*/0);
-  ASSERT_TRUE(status.ok());
-  std::vector<size_t> buffer_slots = status.take();
-  ASSERT_EQ(buffer_slots.size(), 0);
-  ASSERT_EQ(producer_queue_->capacity(), 0);
-}
-
-TEST_F(BufferHubQueueTest, TestUsageSetMask) {
-  const uint32_t set_mask = GRALLOC_USAGE_SW_WRITE_OFTEN;
-  ASSERT_TRUE(
-      CreateQueues(config_builder_.Build(), UsagePolicy{set_mask, 0, 0, 0}));
-
-  // When allocation, leave out |set_mask| from usage bits on purpose.
-  auto status = producer_queue_->AllocateBuffer(
-      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
-      kBufferUsage & ~set_mask);
-  ASSERT_TRUE(status.ok());
-
-  LocalHandle fence;
-  size_t slot;
-  DvrNativeBufferMetadata mo;
-  auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  ASSERT_TRUE(p1_status.ok());
-  auto p1 = p1_status.take();
-  ASSERT_EQ(p1->usage() & set_mask, set_mask);
-}
-
-TEST_F(BufferHubQueueTest, TestUsageClearMask) {
-  const uint32_t clear_mask = GRALLOC_USAGE_SW_WRITE_OFTEN;
-  ASSERT_TRUE(
-      CreateQueues(config_builder_.Build(), UsagePolicy{0, clear_mask, 0, 0}));
-
-  // When allocation, add |clear_mask| into usage bits on purpose.
-  auto status = producer_queue_->AllocateBuffer(
-      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
-      kBufferUsage | clear_mask);
-  ASSERT_TRUE(status.ok());
-
-  LocalHandle fence;
-  size_t slot;
-  DvrNativeBufferMetadata mo;
-  auto p1_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  ASSERT_TRUE(p1_status.ok());
-  auto p1 = p1_status.take();
-  ASSERT_EQ(p1->usage() & clear_mask, 0U);
-}
-
-TEST_F(BufferHubQueueTest, TestUsageDenySetMask) {
-  const uint32_t deny_set_mask = GRALLOC_USAGE_SW_WRITE_OFTEN;
-  ASSERT_TRUE(CreateQueues(config_builder_.SetMetadata<int64_t>().Build(),
-                           UsagePolicy{0, 0, deny_set_mask, 0}));
-
-  // Now that |deny_set_mask| is illegal, allocation without those bits should
-  // be able to succeed.
-  auto status = producer_queue_->AllocateBuffer(
-      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
-      kBufferUsage & ~deny_set_mask);
-  ASSERT_TRUE(status.ok());
-
-  // While allocation with those bits should fail.
-  status = producer_queue_->AllocateBuffer(kBufferWidth, kBufferHeight,
-                                           kBufferLayerCount, kBufferFormat,
-                                           kBufferUsage | deny_set_mask);
-  ASSERT_FALSE(status.ok());
-  ASSERT_EQ(EINVAL, status.error());
-}
-
-TEST_F(BufferHubQueueTest, TestUsageDenyClearMask) {
-  const uint32_t deny_clear_mask = GRALLOC_USAGE_SW_WRITE_OFTEN;
-  ASSERT_TRUE(CreateQueues(config_builder_.SetMetadata<int64_t>().Build(),
-                           UsagePolicy{0, 0, 0, deny_clear_mask}));
-
-  // Now that clearing |deny_clear_mask| is illegal (i.e. setting these bits are
-  // mandatory), allocation with those bits should be able to succeed.
-  auto status = producer_queue_->AllocateBuffer(
-      kBufferWidth, kBufferHeight, kBufferLayerCount, kBufferFormat,
-      kBufferUsage | deny_clear_mask);
-  ASSERT_TRUE(status.ok());
-
-  // While allocation without those bits should fail.
-  status = producer_queue_->AllocateBuffer(kBufferWidth, kBufferHeight,
-                                           kBufferLayerCount, kBufferFormat,
-                                           kBufferUsage & ~deny_clear_mask);
-  ASSERT_FALSE(status.ok());
-  ASSERT_EQ(EINVAL, status.error());
-}
-
-TEST_F(BufferHubQueueTest, TestQueueInfo) {
-  static const bool kIsAsync = true;
-  ASSERT_TRUE(CreateQueues(config_builder_.SetIsAsync(kIsAsync)
-                               .SetDefaultWidth(kBufferWidth)
-                               .SetDefaultHeight(kBufferHeight)
-                               .SetDefaultFormat(kBufferFormat)
-                               .Build(),
-                           UsagePolicy{}));
-
-  EXPECT_EQ(producer_queue_->default_width(), kBufferWidth);
-  EXPECT_EQ(producer_queue_->default_height(), kBufferHeight);
-  EXPECT_EQ(producer_queue_->default_format(), kBufferFormat);
-  EXPECT_EQ(producer_queue_->is_async(), kIsAsync);
-
-  EXPECT_EQ(consumer_queue_->default_width(), kBufferWidth);
-  EXPECT_EQ(consumer_queue_->default_height(), kBufferHeight);
-  EXPECT_EQ(consumer_queue_->default_format(), kBufferFormat);
-  EXPECT_EQ(consumer_queue_->is_async(), kIsAsync);
-}
-
-TEST_F(BufferHubQueueTest, TestFreeAllBuffers) {
-  constexpr size_t kBufferCount = 2;
-
-#define CHECK_NO_BUFFER_THEN_ALLOCATE(num_buffers)  \
-  EXPECT_EQ(consumer_queue_->count(), 0U);          \
-  EXPECT_EQ(consumer_queue_->capacity(), 0U);       \
-  EXPECT_EQ(producer_queue_->count(), 0U);          \
-  EXPECT_EQ(producer_queue_->capacity(), 0U);       \
-  for (size_t i = 0; i < num_buffers; i++) {        \
-    AllocateBuffer();                               \
-  }                                                 \
-  EXPECT_EQ(producer_queue_->count(), num_buffers); \
-  EXPECT_EQ(producer_queue_->capacity(), num_buffers);
-
-  size_t slot;
-  LocalHandle fence;
-  pdx::Status<void> status;
-  pdx::Status<std::shared_ptr<ConsumerBuffer>> consumer_status;
-  pdx::Status<std::shared_ptr<ProducerBuffer>> producer_status;
-  std::shared_ptr<ConsumerBuffer> consumer_buffer;
-  std::shared_ptr<ProducerBuffer> producer_buffer;
-  DvrNativeBufferMetadata mi, mo;
-
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  // Free all buffers when buffers are avaible for dequeue.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-  status = producer_queue_->FreeAllBuffers();
-  EXPECT_TRUE(status.ok());
-
-  // Free all buffers when one buffer is dequeued.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-  producer_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  ASSERT_TRUE(producer_status.ok());
-  status = producer_queue_->FreeAllBuffers();
-  EXPECT_TRUE(status.ok());
-
-  // Free all buffers when all buffers are dequeued.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-  for (size_t i = 0; i < kBufferCount; i++) {
-    producer_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    ASSERT_TRUE(producer_status.ok());
-  }
-  status = producer_queue_->FreeAllBuffers();
-  EXPECT_TRUE(status.ok());
-
-  // Free all buffers when one buffer is posted.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-  producer_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-  ASSERT_TRUE(producer_status.ok());
-  producer_buffer = producer_status.take();
-  ASSERT_NE(nullptr, producer_buffer);
-  ASSERT_EQ(0, producer_buffer->PostAsync(&mi, fence));
-  status = producer_queue_->FreeAllBuffers();
-  EXPECT_TRUE(status.ok());
-
-  // Free all buffers when all buffers are posted.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-  for (size_t i = 0; i < kBufferCount; i++) {
-    producer_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    ASSERT_TRUE(producer_status.ok());
-    producer_buffer = producer_status.take();
-    ASSERT_NE(producer_buffer, nullptr);
-    ASSERT_EQ(producer_buffer->PostAsync(&mi, fence), 0);
-  }
-  status = producer_queue_->FreeAllBuffers();
-  EXPECT_TRUE(status.ok());
-
-  // Free all buffers when all buffers are acquired.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-  for (size_t i = 0; i < kBufferCount; i++) {
-    producer_status = producer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    ASSERT_TRUE(producer_status.ok());
-    producer_buffer = producer_status.take();
-    ASSERT_NE(producer_buffer, nullptr);
-    ASSERT_EQ(producer_buffer->PostAsync(&mi, fence), 0);
-    consumer_status = consumer_queue_->Dequeue(kTimeoutMs, &slot, &mo, &fence);
-    ASSERT_TRUE(consumer_status.ok()) << consumer_status.GetErrorMessage();
-  }
-
-  status = producer_queue_->FreeAllBuffers();
-  EXPECT_TRUE(status.ok());
-
-  // In addition to FreeAllBuffers() from the queue, it is also required to
-  // delete all references to the ProducerBuffer (i.e. the PDX client).
-  producer_buffer = nullptr;
-
-  // Crank consumer queue events to pickup EPOLLHUP events on the queue.
-  consumer_queue_->HandleQueueEvents();
-
-  // One last check.
-  CHECK_NO_BUFFER_THEN_ALLOCATE(kBufferCount);
-
-#undef CHECK_NO_BUFFER_THEN_ALLOCATE
-}
-
-TEST_F(BufferHubQueueTest, TestProducerToParcelableNotEmpty) {
-  ASSERT_TRUE(CreateQueues(config_builder_.SetMetadata<uint64_t>().Build(),
-                           UsagePolicy{}));
-
-  // Allocate only one buffer.
-  AllocateBuffer();
-
-  // Export should fail as the queue is not empty.
-  auto status = producer_queue_->TakeAsParcelable();
-  EXPECT_FALSE(status.ok());
-}
-
-TEST_F(BufferHubQueueTest, TestProducerExportToParcelable) {
-  ASSERT_TRUE(CreateQueues(config_builder_.Build(), UsagePolicy{}));
-
-  auto s1 = producer_queue_->TakeAsParcelable();
-  EXPECT_TRUE(s1.ok());
-
-  ProducerQueueParcelable output_parcelable = s1.take();
-  EXPECT_TRUE(output_parcelable.IsValid());
-
-  Parcel parcel;
-  status_t res;
-  res = output_parcelable.writeToParcel(&parcel);
-  EXPECT_EQ(res, OK);
-
-  // After written into parcelable, the output_parcelable is still valid has
-  // keeps the producer channel alive.
-  EXPECT_TRUE(output_parcelable.IsValid());
-
-  // Creating producer buffer should fail.
-  auto s2 = producer_queue_->AllocateBuffer(kBufferWidth, kBufferHeight,
-                                            kBufferLayerCount, kBufferFormat,
-                                            kBufferUsage);
-  ASSERT_FALSE(s2.ok());
-
-  // Reset the data position so that we can read back from the same parcel
-  // without doing actually Binder IPC.
-  parcel.setDataPosition(0);
-  producer_queue_ = nullptr;
-
-  // Recreate the producer queue from the parcel.
-  ProducerQueueParcelable input_parcelable;
-  EXPECT_FALSE(input_parcelable.IsValid());
-
-  res = input_parcelable.readFromParcel(&parcel);
-  EXPECT_EQ(res, OK);
-  EXPECT_TRUE(input_parcelable.IsValid());
-
-  EXPECT_EQ(producer_queue_, nullptr);
-  producer_queue_ = ProducerQueue::Import(input_parcelable.TakeChannelHandle());
-  EXPECT_FALSE(input_parcelable.IsValid());
-  ASSERT_NE(producer_queue_, nullptr);
-
-  // Newly created queue from the parcel can allocate buffer, post buffer to
-  // consumer.
-  EXPECT_NO_FATAL_FAILURE(AllocateBuffer());
-  EXPECT_EQ(producer_queue_->count(), 1U);
-  EXPECT_EQ(producer_queue_->capacity(), 1U);
-
-  size_t slot;
-  DvrNativeBufferMetadata producer_meta;
-  DvrNativeBufferMetadata consumer_meta;
-  LocalHandle fence;
-  auto s3 = producer_queue_->Dequeue(0, &slot, &producer_meta, &fence);
-  EXPECT_TRUE(s3.ok());
-
-  std::shared_ptr<ProducerBuffer> p1 = s3.take();
-  ASSERT_NE(p1, nullptr);
-
-  producer_meta.timestamp = 42;
-  EXPECT_EQ(p1->PostAsync(&producer_meta, LocalHandle()), 0);
-
-  // Make sure the buffer can be dequeued from consumer side.
-  auto s4 = consumer_queue_->Dequeue(kTimeoutMs, &slot, &consumer_meta, &fence);
-  EXPECT_TRUE(s4.ok()) << s4.GetErrorMessage();
-  EXPECT_EQ(consumer_queue_->capacity(), 1U);
-
-  auto consumer = s4.take();
-  ASSERT_NE(consumer, nullptr);
-  EXPECT_EQ(producer_meta.timestamp, consumer_meta.timestamp);
-}
-
-TEST_F(BufferHubQueueTest, TestCreateConsumerParcelable) {
-  ASSERT_TRUE(CreateProducerQueue(config_builder_.Build(), UsagePolicy{}));
-
-  auto s1 = producer_queue_->CreateConsumerQueueParcelable();
-  EXPECT_TRUE(s1.ok());
-  ConsumerQueueParcelable output_parcelable = s1.take();
-  EXPECT_TRUE(output_parcelable.IsValid());
-
-  // Write to a Parcel new object.
-  Parcel parcel;
-  status_t res;
-  res = output_parcelable.writeToParcel(&parcel);
-
-  // Reset the data position so that we can read back from the same parcel
-  // without doing actually Binder IPC.
-  parcel.setDataPosition(0);
-
-  // No consumer queue created yet.
-  EXPECT_EQ(consumer_queue_, nullptr);
-
-  // If the parcel contains a consumer queue, read into a
-  // ProducerQueueParcelable should fail.
-  ProducerQueueParcelable wrongly_typed_parcelable;
-  EXPECT_FALSE(wrongly_typed_parcelable.IsValid());
-  res = wrongly_typed_parcelable.readFromParcel(&parcel);
-  EXPECT_EQ(res, -EINVAL);
-  parcel.setDataPosition(0);
-
-  // Create the consumer queue from the parcel.
-  ConsumerQueueParcelable input_parcelable;
-  EXPECT_FALSE(input_parcelable.IsValid());
-
-  res = input_parcelable.readFromParcel(&parcel);
-  EXPECT_EQ(res, OK);
-  EXPECT_TRUE(input_parcelable.IsValid());
-
-  consumer_queue_ = ConsumerQueue::Import(input_parcelable.TakeChannelHandle());
-  EXPECT_FALSE(input_parcelable.IsValid());
-  ASSERT_NE(consumer_queue_, nullptr);
-
-  EXPECT_NO_FATAL_FAILURE(AllocateBuffer());
-  EXPECT_EQ(producer_queue_->count(), 1U);
-  EXPECT_EQ(producer_queue_->capacity(), 1U);
-
-  size_t slot;
-  DvrNativeBufferMetadata producer_meta;
-  DvrNativeBufferMetadata consumer_meta;
-  LocalHandle fence;
-  auto s2 = producer_queue_->Dequeue(0, &slot, &producer_meta, &fence);
-  EXPECT_TRUE(s2.ok());
-
-  std::shared_ptr<ProducerBuffer> p1 = s2.take();
-  ASSERT_NE(p1, nullptr);
-
-  producer_meta.timestamp = 42;
-  EXPECT_EQ(p1->PostAsync(&producer_meta, LocalHandle()), 0);
-
-  // Make sure the buffer can be dequeued from consumer side.
-  auto s3 = consumer_queue_->Dequeue(kTimeoutMs, &slot, &consumer_meta, &fence);
-  EXPECT_TRUE(s3.ok()) << s3.GetErrorMessage();
-  EXPECT_EQ(consumer_queue_->capacity(), 1U);
-
-  auto consumer = s3.take();
-  ASSERT_NE(consumer, nullptr);
-  EXPECT_EQ(producer_meta.timestamp, consumer_meta.timestamp);
-}
-
-}  // namespace
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libdisplay/Android.bp b/libs/vr/libdisplay/Android.bp
deleted file mode 100644
index b0ed950..0000000
--- a/libs/vr/libdisplay/Android.bp
+++ /dev/null
@@ -1,78 +0,0 @@
-// 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.
-
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_native_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_native_license"],
-}
-
-sourceFiles = [
-    "display_client.cpp",
-    "display_manager_client.cpp",
-    "display_protocol.cpp",
-    "shared_buffer_helpers.cpp",
-    "vsync_service.cpp",
-]
-
-localIncludeFiles = [
-    "include",
-]
-
-sharedLibraries = [
-    "libbase",
-    "libbinder",
-    "libbufferhubqueue",
-    "libcutils",
-    "liblog",
-    "libutils",
-    "libui",
-    "libgui",
-    "libhardware",
-    "libsync",
-    "libnativewindow",
-    "libpdx_default_transport",
-]
-
-staticLibraries = [
-    "libdvrcommon",
-    "libbroadcastring",
-]
-
-headerLibraries = [
-    "vulkan_headers",
-    "libdvr_headers",
-]
-
-cc_library {
-    srcs: sourceFiles,
-    cflags: ["-DLOG_TAG=\"libdisplay\"",
-        "-DTRACE=0",
-        "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
-        "-DGL_GLEXT_PROTOTYPES",
-        "-DEGL_EGLEXT_PROTOTYPES",
-        "-Wall",
-        "-Werror",
-    ],  // + [ "-UNDEBUG", "-DDEBUG", "-O0", "-g" ],
-    export_include_dirs: localIncludeFiles,
-    shared_libs: sharedLibraries,
-    static_libs: staticLibraries,
-    header_libs: headerLibraries,
-    export_header_lib_headers: headerLibraries,
-
-    name: "libdisplay",
-}
diff --git a/libs/vr/libdisplay/display_client.cpp b/libs/vr/libdisplay/display_client.cpp
deleted file mode 100644
index 62856df..0000000
--- a/libs/vr/libdisplay/display_client.cpp
+++ /dev/null
@@ -1,261 +0,0 @@
-#include "include/private/dvr/display_client.h"
-
-#include <cutils/native_handle.h>
-#include <log/log.h>
-#include <pdx/default_transport/client_channel.h>
-#include <pdx/default_transport/client_channel_factory.h>
-#include <pdx/status.h>
-
-#include <mutex>
-
-#include <private/dvr/display_protocol.h>
-
-using android::pdx::ErrorStatus;
-using android::pdx::LocalHandle;
-using android::pdx::LocalChannelHandle;
-using android::pdx::Status;
-using android::pdx::Transaction;
-using android::pdx::rpc::IfAnyOf;
-
-namespace android {
-namespace dvr {
-namespace display {
-
-Surface::Surface(LocalChannelHandle channel_handle, int* error)
-    : BASE{pdx::default_transport::ClientChannel::Create(
-          std::move(channel_handle))} {
-  auto status = InvokeRemoteMethod<DisplayProtocol::GetSurfaceInfo>();
-  if (!status) {
-    ALOGE("Surface::Surface: Failed to get surface info: %s",
-          status.GetErrorMessage().c_str());
-    Close(status.error());
-    if (error)
-      *error = status.error();
-  }
-
-  surface_id_ = status.get().surface_id;
-  z_order_ = status.get().z_order;
-  visible_ = status.get().visible;
-}
-
-Surface::Surface(const SurfaceAttributes& attributes, int* error)
-    : BASE{pdx::default_transport::ClientChannelFactory::Create(
-               DisplayProtocol::kClientPath),
-           kInfiniteTimeout} {
-  auto status = InvokeRemoteMethod<DisplayProtocol::CreateSurface>(attributes);
-  if (!status) {
-    ALOGE("Surface::Surface: Failed to create display surface: %s",
-          status.GetErrorMessage().c_str());
-    Close(status.error());
-    if (error)
-      *error = status.error();
-  }
-
-  surface_id_ = status.get().surface_id;
-  z_order_ = status.get().z_order;
-  visible_ = status.get().visible;
-}
-
-Status<void> Surface::SetVisible(bool visible) {
-  return SetAttributes(
-      {{SurfaceAttribute::Visible, SurfaceAttributeValue{visible}}});
-}
-
-Status<void> Surface::SetZOrder(int z_order) {
-  return SetAttributes(
-      {{SurfaceAttribute::ZOrder, SurfaceAttributeValue{z_order}}});
-}
-
-Status<void> Surface::SetAttributes(const SurfaceAttributes& attributes) {
-  auto status = InvokeRemoteMethod<DisplayProtocol::SetAttributes>(attributes);
-  if (!status) {
-    ALOGE(
-        "Surface::SetAttributes: Failed to set display surface "
-        "attributes: %s",
-        status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  // Set the local cached copies of the attributes we care about from the full
-  // set of attributes sent to the display service.
-  for (const auto& attribute : attributes) {
-    const auto& key = attribute.first;
-    const auto* variant = &attribute.second;
-    bool invalid_value = false;
-    switch (key) {
-      case SurfaceAttribute::Visible:
-        invalid_value =
-            !IfAnyOf<int32_t, int64_t, bool>::Get(variant, &visible_);
-        break;
-      case SurfaceAttribute::ZOrder:
-        invalid_value = !IfAnyOf<int32_t>::Get(variant, &z_order_);
-        break;
-    }
-
-    if (invalid_value) {
-      ALOGW(
-          "Surface::SetAttributes: Failed to set display surface "
-          "attribute %d because of incompatible type: %d",
-          key, variant->index());
-    }
-  }
-
-  return {};
-}
-
-Status<std::unique_ptr<ProducerQueue>> Surface::CreateQueue(
-    uint32_t width, uint32_t height, uint32_t format, size_t metadata_size) {
-  ALOGD_IF(TRACE, "Surface::CreateQueue: Creating empty queue.");
-  auto status = InvokeRemoteMethod<DisplayProtocol::CreateQueue>(
-      ProducerQueueConfigBuilder()
-          .SetDefaultWidth(width)
-          .SetDefaultHeight(height)
-          .SetDefaultFormat(format)
-          .SetMetadataSize(metadata_size)
-          .Build());
-  if (!status) {
-    ALOGE("Surface::CreateQueue: Failed to create queue: %s",
-          status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  auto producer_queue = ProducerQueue::Import(status.take());
-  if (!producer_queue) {
-    ALOGE("Surface::CreateQueue: Failed to import producer queue!");
-    return ErrorStatus(ENOMEM);
-  }
-
-  return {std::move(producer_queue)};
-}
-
-Status<std::unique_ptr<ProducerQueue>> Surface::CreateQueue(
-    uint32_t width, uint32_t height, uint32_t layer_count, uint32_t format,
-    uint64_t usage, size_t capacity, size_t metadata_size) {
-  ALOGD_IF(TRACE,
-           "Surface::CreateQueue: width=%u height=%u layer_count=%u format=%u "
-           "usage=%" PRIx64 " capacity=%zu",
-           width, height, layer_count, format, usage, capacity);
-  auto status = CreateQueue(width, height, format, metadata_size);
-  if (!status)
-    return status.error_status();
-
-  auto producer_queue = status.take();
-
-  ALOGD_IF(TRACE, "Surface::CreateQueue: Allocating %zu buffers...", capacity);
-  auto allocate_status = producer_queue->AllocateBuffers(
-      width, height, layer_count, format, usage, capacity);
-  if (!allocate_status) {
-    ALOGE("Surface::CreateQueue: Failed to allocate buffer on queue_id=%d: %s",
-          producer_queue->id(), allocate_status.GetErrorMessage().c_str());
-    return allocate_status.error_status();
-  }
-
-  return {std::move(producer_queue)};
-}
-
-DisplayClient::DisplayClient(int* error)
-    : BASE(pdx::default_transport::ClientChannelFactory::Create(
-               DisplayProtocol::kClientPath),
-           kInfiniteTimeout) {
-  if (error)
-    *error = Client::error();
-}
-
-Status<Metrics> DisplayClient::GetDisplayMetrics() {
-  return InvokeRemoteMethod<DisplayProtocol::GetMetrics>();
-}
-
-Status<std::string> DisplayClient::GetConfigurationData(
-    ConfigFileType config_type) {
-  auto status =
-      InvokeRemoteMethod<DisplayProtocol::GetConfigurationData>(config_type);
-  if (!status && status.error() != ENOENT) {
-    ALOGE(
-        "DisplayClient::GetConfigurationData: Unable to get"
-        "configuration data. Error: %s",
-        status.GetErrorMessage().c_str());
-  }
-  return status;
-}
-
-Status<uint8_t> DisplayClient::GetDisplayIdentificationPort() {
-  return InvokeRemoteMethod<DisplayProtocol::GetDisplayIdentificationPort>();
-}
-
-Status<std::unique_ptr<Surface>> DisplayClient::CreateSurface(
-    const SurfaceAttributes& attributes) {
-  int error;
-  if (auto client = Surface::Create(attributes, &error))
-    return {std::move(client)};
-  else
-    return ErrorStatus(error);
-}
-
-pdx::Status<std::unique_ptr<IonBuffer>> DisplayClient::SetupGlobalBuffer(
-    DvrGlobalBufferKey key, size_t size, uint64_t usage) {
-  auto status =
-      InvokeRemoteMethod<DisplayProtocol::SetupGlobalBuffer>(key, size, usage);
-  if (!status) {
-    ALOGE(
-        "DisplayClient::SetupGlobalBuffer: Failed to create the global buffer "
-        "%s",
-        status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  auto ion_buffer = std::make_unique<IonBuffer>();
-  auto native_buffer_handle = status.take();
-  const int ret = native_buffer_handle.Import(ion_buffer.get());
-  if (ret < 0) {
-    ALOGE(
-        "DisplayClient::GetGlobalBuffer: Failed to import global buffer: "
-        "key=%d; error=%s",
-        key, strerror(-ret));
-    return ErrorStatus(-ret);
-  }
-
-  return {std::move(ion_buffer)};
-}
-
-pdx::Status<void> DisplayClient::DeleteGlobalBuffer(DvrGlobalBufferKey key) {
-  auto status = InvokeRemoteMethod<DisplayProtocol::DeleteGlobalBuffer>(key);
-  if (!status) {
-    ALOGE("DisplayClient::DeleteGlobalBuffer Failed: %s",
-          status.GetErrorMessage().c_str());
-  }
-
-  return status;
-}
-
-Status<std::unique_ptr<IonBuffer>> DisplayClient::GetGlobalBuffer(
-    DvrGlobalBufferKey key) {
-  auto status = InvokeRemoteMethod<DisplayProtocol::GetGlobalBuffer>(key);
-  if (!status) {
-    ALOGE(
-        "DisplayClient::GetGlobalBuffer: Failed to get named buffer: key=%d; "
-        "error=%s",
-        key, status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  auto ion_buffer = std::make_unique<IonBuffer>();
-  auto native_buffer_handle = status.take();
-  const int ret = native_buffer_handle.Import(ion_buffer.get());
-  if (ret < 0) {
-    ALOGE(
-        "DisplayClient::GetGlobalBuffer: Failed to import global buffer: "
-        "key=%d; error=%s",
-        key, strerror(-ret));
-    return ErrorStatus(-ret);
-  }
-
-  return {std::move(ion_buffer)};
-}
-
-Status<bool> DisplayClient::IsVrAppRunning() {
-  return InvokeRemoteMethod<DisplayProtocol::IsVrAppRunning>();
-}
-
-}  // namespace display
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libdisplay/display_manager_client.cpp b/libs/vr/libdisplay/display_manager_client.cpp
deleted file mode 100644
index fdeeb70..0000000
--- a/libs/vr/libdisplay/display_manager_client.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-#include "include/private/dvr/display_manager_client.h"
-
-#include <pdx/default_transport/client_channel_factory.h>
-#include <private/dvr/buffer_hub_queue_client.h>
-#include <private/dvr/display_protocol.h>
-#include <utils/Log.h>
-
-using android::pdx::ErrorStatus;
-using android::pdx::LocalChannelHandle;
-using android::pdx::Transaction;
-
-namespace android {
-namespace dvr {
-namespace display {
-
-DisplayManagerClient::DisplayManagerClient()
-    : BASE(pdx::default_transport::ClientChannelFactory::Create(
-          DisplayManagerProtocol::kClientPath)) {}
-
-DisplayManagerClient::~DisplayManagerClient() {}
-
-pdx::Status<std::vector<display::SurfaceState>>
-DisplayManagerClient::GetSurfaceState() {
-  auto status = InvokeRemoteMethod<DisplayManagerProtocol::GetSurfaceState>();
-  if (!status) {
-    ALOGE(
-        "DisplayManagerClient::GetSurfaceState: Failed to get surface info: %s",
-        status.GetErrorMessage().c_str());
-  }
-
-  return status;
-}
-
-pdx::Status<std::unique_ptr<ConsumerQueue>>
-DisplayManagerClient::GetSurfaceQueue(int surface_id, int queue_id) {
-  auto status = InvokeRemoteMethod<DisplayManagerProtocol::GetSurfaceQueue>(
-      surface_id, queue_id);
-  if (!status) {
-    ALOGE(
-        "DisplayManagerClient::GetSurfaceQueue: Failed to get queue for "
-        "surface_id=%d queue_id=%d: %s",
-        surface_id, queue_id, status.GetErrorMessage().c_str());
-    return status.error_status();
-  }
-
-  return {ConsumerQueue::Import(status.take())};
-}
-
-}  // namespace display
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libdisplay/display_protocol.cpp b/libs/vr/libdisplay/display_protocol.cpp
deleted file mode 100644
index 773f9a5..0000000
--- a/libs/vr/libdisplay/display_protocol.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-#include "include/private/dvr/display_protocol.h"
-
-namespace android {
-namespace dvr {
-namespace display {
-
-constexpr char DisplayProtocol::kClientPath[];
-constexpr char DisplayManagerProtocol::kClientPath[];
-constexpr char VSyncProtocol::kClientPath[];
-
-}  // namespace display
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libdisplay/include/CPPLINT.cfg b/libs/vr/libdisplay/include/CPPLINT.cfg
deleted file mode 100644
index 2f8a3c0..0000000
--- a/libs/vr/libdisplay/include/CPPLINT.cfg
+++ /dev/null
@@ -1 +0,0 @@
-filter=-build/header_guard
diff --git a/libs/vr/libdisplay/include/private/dvr/display_client.h b/libs/vr/libdisplay/include/private/dvr/display_client.h
deleted file mode 100644
index 81546ac..0000000
--- a/libs/vr/libdisplay/include/private/dvr/display_client.h
+++ /dev/null
@@ -1,100 +0,0 @@
-#ifndef ANDROID_DVR_DISPLAY_CLIENT_H_
-#define ANDROID_DVR_DISPLAY_CLIENT_H_
-
-#include <dvr/dvr_api.h>
-#include <hardware/hwcomposer.h>
-#include <pdx/client.h>
-#include <pdx/file_handle.h>
-#include <private/dvr/buffer_hub_queue_client.h>
-#include <private/dvr/display_protocol.h>
-
-namespace android {
-namespace dvr {
-namespace display {
-
-class Surface : public pdx::ClientBase<Surface> {
- public:
-  // Utility named constructor. This can be removed once ClientBase::Create is
-  // refactored to return Status<T> types.
-  static pdx::Status<std::unique_ptr<Surface>> CreateSurface(
-      const SurfaceAttributes& attributes) {
-    int error;
-    pdx::Status<std::unique_ptr<Surface>> status;
-    if (auto surface = Create(attributes, &error))
-      status.SetValue(std::move(surface));
-    else
-      status.SetError(error);
-    return status;
-  }
-
-  int surface_id() const { return surface_id_; }
-  int z_order() const { return z_order_; }
-  bool visible() const { return visible_; }
-
-  pdx::Status<void> SetVisible(bool visible);
-  pdx::Status<void> SetZOrder(int z_order);
-  pdx::Status<void> SetAttributes(const SurfaceAttributes& attributes);
-
-  // Creates an empty queue.
-  pdx::Status<std::unique_ptr<ProducerQueue>> CreateQueue(uint32_t width,
-                                                          uint32_t height,
-                                                          uint32_t format,
-                                                          size_t metadata_size);
-
-  // Creates a queue and populates it with |capacity| buffers of the specified
-  // parameters.
-  pdx::Status<std::unique_ptr<ProducerQueue>> CreateQueue(uint32_t width,
-                                                          uint32_t height,
-                                                          uint32_t layer_count,
-                                                          uint32_t format,
-                                                          uint64_t usage,
-                                                          size_t capacity,
-                                                          size_t metadata_size);
-
- private:
-  friend BASE;
-
-  int surface_id_ = -1;
-  int z_order_ = 0;
-  bool visible_ = false;
-
-  // TODO(eieio,avakulenko): Remove error param once pdx::ClientBase::Create()
-  // returns Status<T>.
-  explicit Surface(const SurfaceAttributes& attributes, int* error = nullptr);
-  explicit Surface(pdx::LocalChannelHandle channel_handle,
-                   int* error = nullptr);
-
-  Surface(const Surface&) = delete;
-  void operator=(const Surface&) = delete;
-};
-
-class DisplayClient : public pdx::ClientBase<DisplayClient> {
- public:
-  pdx::Status<Metrics> GetDisplayMetrics();
-  pdx::Status<std::string> GetConfigurationData(ConfigFileType config_type);
-  pdx::Status<uint8_t> GetDisplayIdentificationPort();
-  pdx::Status<std::unique_ptr<IonBuffer>> SetupGlobalBuffer(
-      DvrGlobalBufferKey key, size_t size, uint64_t usage);
-  pdx::Status<void> DeleteGlobalBuffer(DvrGlobalBufferKey key);
-  pdx::Status<std::unique_ptr<IonBuffer>> GetGlobalBuffer(
-      DvrGlobalBufferKey key);
-  pdx::Status<std::unique_ptr<Surface>> CreateSurface(
-      const SurfaceAttributes& attributes);
-
-  // Temporary query for current VR status. Will be removed later.
-  pdx::Status<bool> IsVrAppRunning();
-
- private:
-  friend BASE;
-
-  explicit DisplayClient(int* error = nullptr);
-
-  DisplayClient(const DisplayClient&) = delete;
-  void operator=(const DisplayClient&) = delete;
-};
-
-}  // namespace display
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_DISPLAY_CLIENT_H_
diff --git a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
deleted file mode 100644
index 45aef51..0000000
--- a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
+++ /dev/null
@@ -1,49 +0,0 @@
-#ifndef ANDROID_DVR_DISPLAY_MANAGER_CLIENT_H_
-#define ANDROID_DVR_DISPLAY_MANAGER_CLIENT_H_
-
-#include <string>
-#include <vector>
-
-#include <pdx/client.h>
-#include <pdx/status.h>
-#include <private/dvr/display_protocol.h>
-
-namespace android {
-namespace dvr {
-
-class IonBuffer;
-class ConsumerQueue;
-
-namespace display {
-
-class DisplayManagerClient : public pdx::ClientBase<DisplayManagerClient> {
- public:
-  ~DisplayManagerClient() override;
-
-  pdx::Status<std::vector<SurfaceState>> GetSurfaceState();
-  pdx::Status<std::unique_ptr<ConsumerQueue>> GetSurfaceQueue(int surface_id,
-                                                              int queue_id);
-
-  using Client::event_fd;
-
-  pdx::Status<int> GetEventMask(int events) {
-    if (auto* client_channel = GetChannel())
-      return client_channel->GetEventMask(events);
-    else
-      return pdx::ErrorStatus(EINVAL);
-  }
-
- private:
-  friend BASE;
-
-  DisplayManagerClient();
-
-  DisplayManagerClient(const DisplayManagerClient&) = delete;
-  void operator=(const DisplayManagerClient&) = delete;
-};
-
-}  // namespace display
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_DISPLAY_MANAGER_CLIENT_H_
diff --git a/libs/vr/libdisplay/include/private/dvr/display_protocol.h b/libs/vr/libdisplay/include/private/dvr/display_protocol.h
deleted file mode 100644
index 9f4cc4a..0000000
--- a/libs/vr/libdisplay/include/private/dvr/display_protocol.h
+++ /dev/null
@@ -1,304 +0,0 @@
-#ifndef ANDROID_DVR_DISPLAY_PROTOCOL_H_
-#define ANDROID_DVR_DISPLAY_PROTOCOL_H_
-
-#include <sys/types.h>
-
-#include <array>
-#include <map>
-
-#include <dvr/dvr_display_types.h>
-
-#include <dvr/dvr_api.h>
-#include <pdx/rpc/buffer_wrapper.h>
-#include <pdx/rpc/remote_method.h>
-#include <pdx/rpc/serializable.h>
-#include <pdx/rpc/variant.h>
-#include <private/dvr/bufferhub_rpc.h>
-
-// RPC protocol definitions for DVR display services (VrFlinger).
-
-namespace android {
-namespace dvr {
-namespace display {
-
-// Native display metrics.
-struct Metrics {
-  // Basic display properties.
-  uint32_t display_width;
-  uint32_t display_height;
-  uint32_t display_x_dpi;
-  uint32_t display_y_dpi;
-  uint32_t vsync_period_ns;
-
-  // HMD metrics.
-  // TODO(eieio): Determine how these fields should be populated. On phones
-  // these values are determined at runtime by VrCore based on which headset the
-  // phone is in. On dedicated hardware this needs to come from somewhere else.
-  // Perhaps these should be moved to a separate structure that is returned by a
-  // separate runtime call.
-  uint32_t distorted_width;
-  uint32_t distorted_height;
-  uint32_t hmd_ipd_mm;
-  float inter_lens_distance_m;
-  std::array<float, 4> left_fov_lrbt;
-  std::array<float, 4> right_fov_lrbt;
-
- private:
-  PDX_SERIALIZABLE_MEMBERS(Metrics, display_width, display_height,
-                           display_x_dpi, display_y_dpi, vsync_period_ns,
-                           distorted_width, distorted_height, hmd_ipd_mm,
-                           inter_lens_distance_m, left_fov_lrbt,
-                           right_fov_lrbt);
-};
-
-// Serializable base type for enum structs. Enum structs are easier to use than
-// enum classes, especially for bitmasks. This base type provides common
-// utilities for flags types.
-template <typename Integer>
-class Flags {
- public:
-  using Base = Flags<Integer>;
-  using Type = Integer;
-
-  // NOLINTNEXTLINE(google-explicit-constructor)
-  Flags(const Integer& value) : value_{value} {}
-  Flags(const Flags&) = default;
-  Flags& operator=(const Flags&) = default;
-
-  Integer value() const { return value_; }
-  // NOLINTNEXTLINE(google-explicit-constructor)
-  operator Integer() const { return value_; }
-
-  bool IsSet(Integer bits) const { return (value_ & bits) == bits; }
-  bool IsClear(Integer bits) const { return (value_ & bits) == 0; }
-
-  void Set(Integer bits) { value_ |= bits; }
-  void Clear(Integer bits) { value_ &= ~bits; }
-
-  Integer operator|(Integer bits) const { return value_ | bits; }
-  Integer operator&(Integer bits) const { return value_ & bits; }
-
-  Flags& operator|=(Integer bits) {
-    value_ |= bits;
-    return *this;
-  }
-  Flags& operator&=(Integer bits) {
-    value_ &= bits;
-    return *this;
-  }
-
- private:
-  Integer value_;
-
-  PDX_SERIALIZABLE_MEMBERS(Flags<Integer>, value_);
-};
-
-// Flags indicating what changed since last update.
-struct SurfaceUpdateFlags : public Flags<uint32_t> {
-  enum : Type {
-    None = DVR_SURFACE_UPDATE_FLAGS_NONE,
-    NewSurface = DVR_SURFACE_UPDATE_FLAGS_NEW_SURFACE,
-    BuffersChanged = DVR_SURFACE_UPDATE_FLAGS_BUFFERS_CHANGED,
-    VisibilityChanged = DVR_SURFACE_UPDATE_FLAGS_VISIBILITY_CHANGED,
-    AttributesChanged = DVR_SURFACE_UPDATE_FLAGS_ATTRIBUTES_CHANGED,
-  };
-
-  SurfaceUpdateFlags() : Base{None} {}
-  using Base::Base;
-};
-
-// Surface attribute key/value types.
-using SurfaceAttributeKey = int32_t;
-using SurfaceAttributeValue =
-    pdx::rpc::Variant<int32_t, int64_t, bool, float, std::array<float, 2>,
-                      std::array<float, 3>, std::array<float, 4>,
-                      std::array<float, 8>, std::array<float, 16>>;
-
-// Defined surface attribute keys.
-struct SurfaceAttribute : public Flags<SurfaceAttributeKey> {
-  enum : Type {
-    // Keys in the negative integer space are interpreted by VrFlinger for
-    // direct surfaces.
-    Direct = DVR_SURFACE_ATTRIBUTE_DIRECT,
-    ZOrder = DVR_SURFACE_ATTRIBUTE_Z_ORDER,
-    Visible = DVR_SURFACE_ATTRIBUTE_VISIBLE,
-
-    // Invalid key. May be used to terminate C style lists in public API code.
-    Invalid = DVR_SURFACE_ATTRIBUTE_INVALID,
-
-    // Positive keys are interpreted by the compositor only.
-    FirstUserKey = DVR_SURFACE_ATTRIBUTE_FIRST_USER_KEY,
-  };
-
-  SurfaceAttribute() : Base{Invalid} {}
-  using Base::Base;
-};
-
-// Collection of surface attribute key/value pairs.
-using SurfaceAttributes = std::map<SurfaceAttributeKey, SurfaceAttributeValue>;
-
-struct SurfaceState {
-  int32_t surface_id;
-  int32_t process_id;
-  int32_t user_id;
-
-  SurfaceAttributes surface_attributes;
-  SurfaceUpdateFlags update_flags;
-  std::vector<int32_t> queue_ids;
-
-  // Convenience accessors.
-  bool GetVisible() const {
-    bool bool_value = false;
-    GetAttribute(SurfaceAttribute::Visible, &bool_value,
-                 ValidTypes<int32_t, int64_t, bool, float>{});
-    return bool_value;
-  }
-
-  int GetZOrder() const {
-    int int_value = 0;
-    GetAttribute(SurfaceAttribute::ZOrder, &int_value,
-                 ValidTypes<int32_t, int64_t, float>{});
-    return int_value;
-  }
-
- private:
-  template <typename... Types>
-  struct ValidTypes {};
-
-  template <typename ReturnType, typename... Types>
-  bool GetAttribute(SurfaceAttributeKey key, ReturnType* out_value,
-                    ValidTypes<Types...>) const {
-    auto search = surface_attributes.find(key);
-    if (search != surface_attributes.end())
-      return pdx::rpc::IfAnyOf<Types...>::Get(&search->second, out_value);
-    else
-      return false;
-  }
-
-  PDX_SERIALIZABLE_MEMBERS(SurfaceState, surface_id, process_id,
-                           surface_attributes, update_flags, queue_ids);
-};
-
-struct SurfaceInfo {
-  int surface_id;
-  bool visible;
-  int z_order;
-
- private:
-  PDX_SERIALIZABLE_MEMBERS(SurfaceInfo, surface_id, visible, z_order);
-};
-
-enum class ConfigFileType : uint32_t {
-  kLensMetrics,
-  kDeviceMetrics,
-  kDeviceConfiguration,
-  kDeviceEdid
-};
-
-struct DisplayProtocol {
-  // Service path.
-  static constexpr char kClientPath[] = "system/vr/display/client";
-
-  // Op codes.
-  enum {
-    kOpGetMetrics = 0,
-    kOpGetConfigurationData,
-    kOpSetupGlobalBuffer,
-    kOpDeleteGlobalBuffer,
-    kOpGetGlobalBuffer,
-    kOpIsVrAppRunning,
-    kOpCreateSurface,
-    kOpGetSurfaceInfo,
-    kOpCreateQueue,
-    kOpSetAttributes,
-    kOpGetDisplayIdentificationPort,
-  };
-
-  // Aliases.
-  using LocalChannelHandle = pdx::LocalChannelHandle;
-  using Void = pdx::rpc::Void;
-
-  // Methods.
-  PDX_REMOTE_METHOD(GetMetrics, kOpGetMetrics, Metrics(Void));
-  PDX_REMOTE_METHOD(GetConfigurationData, kOpGetConfigurationData,
-                    std::string(ConfigFileType config_type));
-  PDX_REMOTE_METHOD(GetDisplayIdentificationPort,
-                    kOpGetDisplayIdentificationPort, uint8_t(Void));
-  PDX_REMOTE_METHOD(SetupGlobalBuffer, kOpSetupGlobalBuffer,
-                    LocalNativeBufferHandle(DvrGlobalBufferKey key, size_t size,
-                                            uint64_t usage));
-  PDX_REMOTE_METHOD(DeleteGlobalBuffer, kOpDeleteGlobalBuffer,
-                    void(DvrGlobalBufferKey key));
-  PDX_REMOTE_METHOD(GetGlobalBuffer, kOpGetGlobalBuffer,
-                    LocalNativeBufferHandle(DvrGlobalBufferKey key));
-  PDX_REMOTE_METHOD(IsVrAppRunning, kOpIsVrAppRunning, bool(Void));
-  PDX_REMOTE_METHOD(CreateSurface, kOpCreateSurface,
-                    SurfaceInfo(const SurfaceAttributes& attributes));
-  PDX_REMOTE_METHOD(GetSurfaceInfo, kOpGetSurfaceInfo, SurfaceInfo(Void));
-  PDX_REMOTE_METHOD(
-      CreateQueue, kOpCreateQueue,
-      LocalChannelHandle(const ProducerQueueConfig& producer_config));
-  PDX_REMOTE_METHOD(SetAttributes, kOpSetAttributes,
-                    void(const SurfaceAttributes& attributes));
-};
-
-struct DisplayManagerProtocol {
-  // Service path.
-  static constexpr char kClientPath[] = "system/vr/display/manager";
-
-  // Op codes.
-  enum {
-    kOpGetSurfaceState = 0,
-    kOpGetSurfaceQueue,
-  };
-
-  // Aliases.
-  using LocalChannelHandle = pdx::LocalChannelHandle;
-  using Void = pdx::rpc::Void;
-
-  // Methods.
-  PDX_REMOTE_METHOD(GetSurfaceState, kOpGetSurfaceState,
-                    std::vector<SurfaceState>(Void));
-  PDX_REMOTE_METHOD(GetSurfaceQueue, kOpGetSurfaceQueue,
-                    LocalChannelHandle(int surface_id, int queue_id));
-};
-
-struct VSyncSchedInfo {
-  int64_t vsync_period_ns;
-  int64_t timestamp_ns;
-  uint32_t next_vsync_count;
-
- private:
-  PDX_SERIALIZABLE_MEMBERS(VSyncSchedInfo, vsync_period_ns, timestamp_ns,
-                           next_vsync_count);
-};
-
-struct VSyncProtocol {
-  // Service path.
-  static constexpr char kClientPath[] = "system/vr/display/vsync";
-
-  // Op codes.
-  enum {
-    kOpWait = 0,
-    kOpAck,
-    kOpGetLastTimestamp,
-    kOpGetSchedInfo,
-    kOpAcknowledge,
-  };
-
-  // Aliases.
-  using Void = pdx::rpc::Void;
-  using Timestamp = int64_t;
-
-  // Methods.
-  PDX_REMOTE_METHOD(Wait, kOpWait, Timestamp(Void));
-  PDX_REMOTE_METHOD(GetLastTimestamp, kOpGetLastTimestamp, Timestamp(Void));
-  PDX_REMOTE_METHOD(GetSchedInfo, kOpGetSchedInfo, VSyncSchedInfo(Void));
-  PDX_REMOTE_METHOD(Acknowledge, kOpAcknowledge, void(Void));
-};
-
-}  // namespace display
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_DISPLAY_PROTOCOL_H_
diff --git a/libs/vr/libdisplay/include/private/dvr/shared_buffer_helpers.h b/libs/vr/libdisplay/include/private/dvr/shared_buffer_helpers.h
deleted file mode 100644
index 20541a6..0000000
--- a/libs/vr/libdisplay/include/private/dvr/shared_buffer_helpers.h
+++ /dev/null
@@ -1,146 +0,0 @@
-#ifndef ANDROID_DVR_SHARED_BUFFER_HELPERS_H_
-#define ANDROID_DVR_SHARED_BUFFER_HELPERS_H_
-
-#include <assert.h>
-#include <tuple>
-
-#include <libbroadcastring/broadcast_ring.h>
-#include <private/dvr/display_client.h>
-
-namespace android {
-namespace dvr {
-
-// The buffer usage type for mapped shared buffers.
-enum class CPUUsageMode { READ_OFTEN, READ_RARELY, WRITE_OFTEN, WRITE_RARELY };
-
-// Holds the memory for the mapped shared buffer. Unlocks and releases the
-// underlying IonBuffer in destructor.
-class CPUMappedBuffer {
- public:
-  // This constructor will create a display client and get the buffer from it.
-  CPUMappedBuffer(DvrGlobalBufferKey key, CPUUsageMode mode);
-
-  // If you already have the IonBuffer, use this. It will take ownership.
-  CPUMappedBuffer(std::unique_ptr<IonBuffer> buffer, CPUUsageMode mode);
-
-  // Use this if you do not want to take ownership.
-  CPUMappedBuffer(IonBuffer* buffer, CPUUsageMode mode);
-
-  ~CPUMappedBuffer();
-
-  // Getters.
-  size_t Size() const { return size_; }
-  void* Address() const { return address_; }
-  bool IsMapped() const { return Address() != nullptr; }
-
-  // Attempt mapping this buffer to the CPU addressable space.
-  // This will create a display client and see if the buffer exists.
-  // If the buffer has not been setup yet, you will need to try again later.
-  void TryMapping();
-
- protected:
-  // The memory area if we managed to map it.
-  size_t size_ = 0;
-  void* address_ = nullptr;
-
-  // If we are polling the display client, the buffer key here.
-  DvrGlobalBufferKey buffer_key_;
-
-  // If we just own the IonBuffer outright, it's here.
-  std::unique_ptr<IonBuffer> owned_buffer_ = nullptr;
-
-  // The last time we connected to the display service.
-  int64_t last_display_service_connection_ns_ = 0;
-
-  // If we do not own the IonBuffer, it's here
-  IonBuffer* buffer_ = nullptr;
-
-  // The usage mode.
-  CPUUsageMode usage_mode_ = CPUUsageMode::READ_OFTEN;
-};
-
-// Represents a broadcast ring inside a mapped shared memory buffer.
-// If has the same set of constructors as CPUMappedBuffer.
-// The template argument is the concrete BroadcastRing class that this buffer
-// holds.
-template <class RingType>
-class CPUMappedBroadcastRing : public CPUMappedBuffer {
- public:
-  CPUMappedBroadcastRing(DvrGlobalBufferKey key, CPUUsageMode mode)
-      : CPUMappedBuffer(key, mode) {}
-
-  CPUMappedBroadcastRing(std::unique_ptr<IonBuffer> buffer, CPUUsageMode mode)
-      : CPUMappedBuffer(std::move(buffer), mode) {}
-
-  CPUMappedBroadcastRing(IonBuffer* buffer, CPUUsageMode mode)
-      : CPUMappedBuffer(buffer, mode) {}
-
-  // Helper function for publishing records in the ring.
-  void Publish(const typename RingType::Record& record) {
-    assert((usage_mode_ == CPUUsageMode::WRITE_OFTEN) ||
-           (usage_mode_ == CPUUsageMode::WRITE_RARELY));
-
-    auto ring = Ring();
-    if (ring) {
-      ring->Put(record);
-    }
-  }
-
-  // Helper function for getting records from the ring.
-  // Returns true if we were able to retrieve the latest.
-  bool GetNewest(typename RingType::Record* record) {
-    assert((usage_mode_ == CPUUsageMode::READ_OFTEN) ||
-           (usage_mode_ == CPUUsageMode::READ_RARELY));
-
-    auto ring = Ring();
-    if (ring) {
-      return ring->GetNewest(&sequence_, record);
-    }
-
-    return false;
-  }
-
-  // Try obtaining the ring. If the named buffer has not been created yet, it
-  // will return nullptr.
-  RingType* Ring() {
-    // No ring created yet?
-    if (ring_ == nullptr) {
-      // Not mapped the memory yet?
-      if (IsMapped() == false) {
-        TryMapping();
-      }
-
-      // If have the memory mapped, allocate the ring.
-      if (IsMapped()) {
-        switch (usage_mode_) {
-          case CPUUsageMode::READ_OFTEN:
-          case CPUUsageMode::READ_RARELY: {
-            RingType ring;
-            bool import_ok;
-            std::tie(ring, import_ok) = RingType::Import(address_, size_);
-            if (import_ok) {
-              ring_ = std::make_unique<RingType>(ring);
-            }
-          } break;
-          case CPUUsageMode::WRITE_OFTEN:
-          case CPUUsageMode::WRITE_RARELY:
-            ring_ =
-                std::make_unique<RingType>(RingType::Create(address_, size_));
-            break;
-        }
-      }
-    }
-
-    return ring_.get();
-  }
-
- protected:
-  std::unique_ptr<RingType> ring_ = nullptr;
-
-  uint32_t sequence_ = 0;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_SHARED_BUFFER_HELPERS_H_
diff --git a/libs/vr/libdisplay/include/private/dvr/vsync_service.h b/libs/vr/libdisplay/include/private/dvr/vsync_service.h
deleted file mode 100644
index 152464a..0000000
--- a/libs/vr/libdisplay/include/private/dvr/vsync_service.h
+++ /dev/null
@@ -1,65 +0,0 @@
-#ifndef ANDROID_DVR_VSYNC_SERVICE_H_
-#define ANDROID_DVR_VSYNC_SERVICE_H_
-
-#include <binder/IInterface.h>
-
-namespace android {
-namespace dvr {
-
-class IVsyncCallback : public IInterface {
- public:
-  DECLARE_META_INTERFACE(VsyncCallback)
-
-  enum {
-    ON_VSYNC = IBinder::FIRST_CALL_TRANSACTION
-  };
-
-  virtual status_t onVsync(int64_t vsync_timestamp) = 0;
-};
-
-class BnVsyncCallback : public BnInterface<IVsyncCallback> {
- public:
-  virtual status_t onTransact(uint32_t code, const Parcel& data,
-                              Parcel* reply, uint32_t flags = 0);
-};
-
-// Register a callback with IVsyncService to be notified of vsync events and
-// timestamps. There's also a shared memory vsync buffer defined in
-// dvr_shared_buffers.h. IVsyncService has advantages over the vsync shared
-// memory buffer that make it preferable in certain situations:
-//
-// 1. The shared memory buffer lifetime is controlled by VrCore. IVsyncService
-// is always available as long as surface flinger is running.
-//
-// 2. IVsyncService will make a binder callback when a vsync event occurs. This
-// allows the client to not write code to implement periodic "get the latest
-// vsync" calls, which is necessary with the vsync shared memory buffer.
-//
-// 3. The IVsyncService provides the real vsync timestamp reported by hardware
-// composer, whereas the vsync shared memory buffer only has predicted vsync
-// times.
-class IVsyncService : public IInterface {
-public:
-  DECLARE_META_INTERFACE(VsyncService)
-
-  static const char* GetServiceName() { return "vrflinger_vsync"; }
-
-  enum {
-    REGISTER_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
-    UNREGISTER_CALLBACK
-  };
-
-  virtual status_t registerCallback(const sp<IVsyncCallback> callback) = 0;
-  virtual status_t unregisterCallback(const sp<IVsyncCallback> callback) = 0;
-};
-
-class BnVsyncService : public BnInterface<IVsyncService> {
- public:
-  virtual status_t onTransact(uint32_t code, const Parcel& data,
-                              Parcel* reply, uint32_t flags = 0);
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_VSYNC_SERVICE_H_
diff --git a/libs/vr/libdisplay/shared_buffer_helpers.cpp b/libs/vr/libdisplay/shared_buffer_helpers.cpp
deleted file mode 100644
index 6ebf487..0000000
--- a/libs/vr/libdisplay/shared_buffer_helpers.cpp
+++ /dev/null
@@ -1,98 +0,0 @@
-#include <private/dvr/clock_ns.h>
-#include <private/dvr/shared_buffer_helpers.h>
-
-namespace android {
-namespace dvr {
-namespace {
-
-// We will not poll the display service for buffers more frequently than this.
-constexpr size_t kDisplayServiceTriesPerSecond = 2;
-}  // namespace
-
-CPUMappedBuffer::CPUMappedBuffer(DvrGlobalBufferKey key, CPUUsageMode mode)
-    : buffer_key_(key), usage_mode_(mode) {
-  TryMapping();
-}
-
-CPUMappedBuffer::CPUMappedBuffer(std::unique_ptr<IonBuffer> buffer,
-                                 CPUUsageMode mode)
-    : owned_buffer_(std::move(buffer)),
-      buffer_(owned_buffer_.get()),
-      usage_mode_(mode) {
-  TryMapping();
-}
-
-CPUMappedBuffer::CPUMappedBuffer(IonBuffer* buffer, CPUUsageMode mode)
-    : buffer_(buffer), usage_mode_(mode) {
-  TryMapping();
-}
-
-CPUMappedBuffer::~CPUMappedBuffer() {
-  if (IsMapped()) {
-    buffer_->Unlock();
-  }
-}
-
-void CPUMappedBuffer::TryMapping() {
-  // Do we have an IonBuffer for this shared memory object?
-  if (buffer_ == nullptr) {
-    // Has it been too long since we last connected to the display service?
-    const auto current_time_ns = GetSystemClockNs();
-    if ((current_time_ns - last_display_service_connection_ns_) <
-        (1e9 / kDisplayServiceTriesPerSecond)) {
-      // Early exit.
-      return;
-    }
-    last_display_service_connection_ns_ = current_time_ns;
-
-    // Create a display client and get the buffer.
-    auto display_client = display::DisplayClient::Create();
-    if (display_client) {
-      auto get_result = display_client->GetGlobalBuffer(buffer_key_);
-      if (get_result.ok()) {
-        owned_buffer_ = get_result.take();
-        buffer_ = owned_buffer_.get();
-      } else {
-        // The buffer has not been created yet. This is OK, we will keep
-        // retrying.
-      }
-    } else {
-      ALOGE("Unable to create display client for shared buffer access");
-    }
-  }
-
-  if (buffer_) {
-    auto usage = buffer_->usage() & ~GRALLOC_USAGE_SW_READ_MASK &
-                 ~GRALLOC_USAGE_SW_WRITE_MASK;
-
-    // Figure out the usage bits.
-    switch (usage_mode_) {
-      case CPUUsageMode::READ_OFTEN:
-        usage |= GRALLOC_USAGE_SW_READ_OFTEN;
-        break;
-      case CPUUsageMode::READ_RARELY:
-        usage |= GRALLOC_USAGE_SW_READ_RARELY;
-        break;
-      case CPUUsageMode::WRITE_OFTEN:
-        usage |= GRALLOC_USAGE_SW_WRITE_OFTEN;
-        break;
-      case CPUUsageMode::WRITE_RARELY:
-        usage |= GRALLOC_USAGE_SW_WRITE_RARELY;
-        break;
-    }
-
-    int width = static_cast<int>(buffer_->width());
-    int height = 1;
-    const auto ret = buffer_->Lock(usage, 0, 0, width, height, &address_);
-
-    if (ret < 0 || !address_) {
-      ALOGE("Pose failed to map ring buffer: ret:%d, addr:%p", ret, address_);
-      buffer_->Unlock();
-    } else {
-      size_ = width;
-    }
-  }
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libdisplay/system/CPPLINT.cfg b/libs/vr/libdisplay/system/CPPLINT.cfg
deleted file mode 100644
index 2f8a3c0..0000000
--- a/libs/vr/libdisplay/system/CPPLINT.cfg
+++ /dev/null
@@ -1 +0,0 @@
-filter=-build/header_guard
diff --git a/libs/vr/libdisplay/vsync_service.cpp b/libs/vr/libdisplay/vsync_service.cpp
deleted file mode 100644
index 04d4f30..0000000
--- a/libs/vr/libdisplay/vsync_service.cpp
+++ /dev/null
@@ -1,146 +0,0 @@
-#include "include/private/dvr/vsync_service.h"
-
-#include <binder/Parcel.h>
-#include <log/log.h>
-
-namespace android {
-namespace dvr {
-
-status_t BnVsyncCallback::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
-  switch (code) {
-    case ON_VSYNC: {
-      CHECK_INTERFACE(IVsyncCallback, data, reply);
-      int64_t vsync_timestamp = 0;
-      status_t result = data.readInt64(&vsync_timestamp);
-      if (result != OK) {
-        ALOGE("onVsync failed to readInt64: %d", result);
-        return result;
-      }
-      onVsync(vsync_timestamp);
-      return OK;
-    }
-    default: {
-      return BBinder::onTransact(code, data, reply, flags);
-    }
-  }
-}
-
-class BpVsyncCallback : public BpInterface<IVsyncCallback> {
-public:
-  explicit BpVsyncCallback(const sp<IBinder>& impl)
-      : BpInterface<IVsyncCallback>(impl) {}
-  virtual ~BpVsyncCallback() {}
-
-  virtual status_t onVsync(int64_t vsync_timestamp) {
-    Parcel data, reply;
-    status_t result = data.writeInterfaceToken(
-        IVsyncCallback::getInterfaceDescriptor());
-    if (result != OK) {
-      ALOGE("onVsync failed to writeInterfaceToken: %d", result);
-      return result;
-    }
-    result = data.writeInt64(vsync_timestamp);
-    if (result != OK) {
-      ALOGE("onVsync failed to writeInt64: %d", result);
-      return result;
-    }
-    result = remote()->transact(BnVsyncCallback::ON_VSYNC, data, &reply,
-                                IBinder::FLAG_ONEWAY);
-    if (result != OK) {
-      ALOGE("onVsync failed to transact: %d", result);
-      return result;
-    }
-    return result;
-  }
-};
-
-IMPLEMENT_META_INTERFACE(VsyncCallback, "android.dvr.IVsyncCallback");
-
-
-status_t BnVsyncService::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
-  switch (code) {
-    case REGISTER_CALLBACK: {
-      CHECK_INTERFACE(IVsyncService, data, reply);
-      sp<IBinder> callback;
-      status_t result = data.readStrongBinder(&callback);
-      if (result != OK) {
-        ALOGE("registerCallback failed to readStrongBinder: %d", result);
-        return result;
-      }
-      registerCallback(interface_cast<IVsyncCallback>(callback));
-      return OK;
-    }
-    case UNREGISTER_CALLBACK: {
-      CHECK_INTERFACE(IVsyncService, data, reply);
-      sp<IBinder> callback;
-      status_t result = data.readStrongBinder(&callback);
-      if (result != OK) {
-        ALOGE("unregisterCallback failed to readStrongBinder: %d", result);
-        return result;
-      }
-      unregisterCallback(interface_cast<IVsyncCallback>(callback));
-      return OK;
-    }
-    default: {
-      return BBinder::onTransact(code, data, reply, flags);
-    }
-  }
-}
-
-class BpVsyncService : public BpInterface<IVsyncService> {
-public:
-  explicit BpVsyncService(const sp<IBinder>& impl)
-      : BpInterface<IVsyncService>(impl) {}
-  virtual ~BpVsyncService() {}
-
-  virtual status_t registerCallback(const sp<IVsyncCallback> callback) {
-    Parcel data, reply;
-    status_t result = data.writeInterfaceToken(
-        IVsyncService::getInterfaceDescriptor());
-    if (result != OK) {
-      ALOGE("registerCallback failed to writeInterfaceToken: %d", result);
-      return result;
-    }
-    result = data.writeStrongBinder(IInterface::asBinder(callback));
-    if (result != OK) {
-      ALOGE("registerCallback failed to writeStrongBinder: %d", result);
-      return result;
-    }
-    result = remote()->transact(
-        BnVsyncService::REGISTER_CALLBACK, data, &reply);
-    if (result != OK) {
-      ALOGE("registerCallback failed to transact: %d", result);
-      return result;
-    }
-    return result;
-  }
-
-  virtual status_t unregisterCallback(const sp<IVsyncCallback> callback) {
-    Parcel data, reply;
-    status_t result = data.writeInterfaceToken(
-        IVsyncService::getInterfaceDescriptor());
-    if (result != OK) {
-      ALOGE("unregisterCallback failed to writeInterfaceToken: %d", result);
-      return result;
-    }
-    result = data.writeStrongBinder(IInterface::asBinder(callback));
-    if (result != OK) {
-      ALOGE("unregisterCallback failed to writeStrongBinder: %d", result);
-      return result;
-    }
-    result = remote()->transact(
-        BnVsyncService::UNREGISTER_CALLBACK, data, &reply);
-    if (result != OK) {
-      ALOGE("unregisterCallback failed to transact: %d", result);
-      return result;
-    }
-    return result;
-  }
-};
-
-IMPLEMENT_META_INTERFACE(VsyncService, "android.dvr.IVsyncService");
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libvrsensor/Android.bp b/libs/vr/libvrsensor/Android.bp
deleted file mode 100644
index 40a5099..0000000
--- a/libs/vr/libvrsensor/Android.bp
+++ /dev/null
@@ -1,63 +0,0 @@
-// 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.
-
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_native_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_native_license"],
-}
-
-sourceFiles = [
-    "pose_client.cpp",
-    "latency_model.cpp",
-]
-
-includeFiles = [
-    "include",
-]
-
-staticLibraries = [
-    "libdisplay",
-    "libdvrcommon",
-    "libbroadcastring",
-]
-
-sharedLibraries = [
-    "libbase",
-    "libbinder",
-    "libbufferhubqueue",
-    "libcutils",
-    "libhardware",
-    "liblog",
-    "libutils",
-    "libui",
-    "libpdx_default_transport",
-]
-
-cc_library {
-    srcs: sourceFiles,
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-Wno-macro-redefined",
-    ],
-    export_include_dirs: includeFiles,
-    static_libs: staticLibraries,
-    shared_libs: sharedLibraries,
-    header_libs: ["libdvr_headers"],
-    name: "libvrsensor",
-}
diff --git a/libs/vr/libvrsensor/include/CPPLINT.cfg b/libs/vr/libvrsensor/include/CPPLINT.cfg
deleted file mode 100644
index 2f8a3c0..0000000
--- a/libs/vr/libvrsensor/include/CPPLINT.cfg
+++ /dev/null
@@ -1 +0,0 @@
-filter=-build/header_guard
diff --git a/libs/vr/libvrsensor/include/dvr/pose_client.h b/libs/vr/libvrsensor/include/dvr/pose_client.h
deleted file mode 100644
index b663a67..0000000
--- a/libs/vr/libvrsensor/include/dvr/pose_client.h
+++ /dev/null
@@ -1,176 +0,0 @@
-#ifndef ANDROID_DVR_POSE_CLIENT_H_
-#define ANDROID_DVR_POSE_CLIENT_H_
-
-#ifdef __ARM_NEON
-#include <arm_neon.h>
-#else
-#ifndef __FLOAT32X4T_86
-#define __FLOAT32X4T_86
-typedef float float32x4_t __attribute__ ((__vector_size__ (16)));
-typedef struct float32x4x4_t { float32x4_t val[4]; } float32x4x4_t;
-#endif
-#endif
-
-#include <stdbool.h>
-#include <stdint.h>
-
-#include <dvr/dvr_pose.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct DvrPoseClient DvrPoseClient;
-
-// Returned by the async pose ring buffer access API.
-typedef struct DvrPoseRingBufferInfo {
-  // Read-only pointer to the pose ring buffer. The current pose is in this
-  // buffer at element buffer[current_frame & (buffer_size - 1)]. The next
-  // frame's forecasted pose is at element
-  // ((current_frame + 1) & (buffer_size - 1)). And so on. The poses are
-  // predicted for when 50% of the corresponding frame's pixel data is visible
-  // to the user.
-  // The last value returned by dvrPresent is the count for the next frame,
-  // which is the earliest that the application could display something if they
-  // were to render promptly. (TODO(jbates) move this comment to dvrPresent).
-  volatile const DvrPoseAsync* buffer;
-  // Minimum number of accurate forecasted poses including the current frame's
-  // pose. This is the number of poses that are udpated by the pose service.
-  // If the application reads past this count, they will get a stale prediction
-  // from a previous frame. Guaranteed to be at least 2.
-  uint32_t min_future_count;
-  // Number of elements in buffer. At least 8 and greater than min_future_count.
-  // Guaranteed to be a power of two. The total size of the buffer in bytes is:
-  //   total_count * sizeof(DvrPoseAsync)
-  uint32_t total_count;
-} DvrPoseRingBufferInfo;
-
-typedef enum DvrPoseMode {
-  DVR_POSE_MODE_6DOF = 0,
-  DVR_POSE_MODE_3DOF,
-  DVR_POSE_MODE_MOCK_FROZEN,
-  DVR_POSE_MODE_MOCK_HEAD_TURN_SLOW,
-  DVR_POSE_MODE_MOCK_HEAD_TURN_FAST,
-  DVR_POSE_MODE_MOCK_ROTATE_SLOW,
-  DVR_POSE_MODE_MOCK_ROTATE_MEDIUM,
-  DVR_POSE_MODE_MOCK_ROTATE_FAST,
-  DVR_POSE_MODE_MOCK_CIRCLE_STRAFE,
-  DVR_POSE_MODE_FLOAT,
-  DVR_POSE_MODE_MOCK_MOTION_SICKNESS,
-
-  // Always last.
-  DVR_POSE_MODE_COUNT,
-} DvrPoseMode;
-
-typedef enum DvrControllerId {
-  DVR_CONTROLLER_0 = 0,
-  DVR_CONTROLLER_1 = 1,
-} DvrControllerId;
-
-// Creates a new pose client.
-//
-// @return Pointer to the created pose client, nullptr on failure.
-DvrPoseClient* dvrPoseClientCreate();
-
-// Destroys a pose client.
-//
-// @param client Pointer to the pose client to be destroyed.
-void dvrPoseClientDestroy(DvrPoseClient* client);
-
-// Gets the pose for the given vsync count.
-//
-// @param client Pointer to the pose client.
-// @param vsync_count Vsync that this pose should be forward-predicted to.
-//     Typically this is the count returned by dvrGetNextVsyncCount.
-// @param out_pose Struct to store pose state.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientGet(DvrPoseClient* client, uint32_t vsync_count,
-                     DvrPoseAsync* out_pose);
-
-// Gets the current vsync count.
-uint32_t dvrPoseClientGetVsyncCount(DvrPoseClient* client);
-
-// Gets the pose for the given controller at the given vsync count.
-//
-// @param client Pointer to the pose client.
-// @param controller_id The controller id.
-// @param vsync_count Vsync that this pose should be forward-predicted to.
-//     Typically this is the count returned by dvrGetNextVsyncCount.
-// @param out_pose Struct to store pose state.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientGetController(DvrPoseClient* client, int32_t controller_id,
-                               uint32_t vsync_count, DvrPoseAsync* out_pose);
-
-// Enables/disables logging for the controller fusion.
-//
-// @param client Pointer to the pose client.
-// @param enable True starts logging, False stops.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientLogController(DvrPoseClient* client, bool enable);
-
-// DEPRECATED
-// Polls current pose state.
-//
-// @param client Pointer to the pose client.
-// @param state Struct to store polled state.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientPoll(DvrPoseClient* client, DvrPose* state);
-
-// Freezes the pose to the provided state.
-//
-// Future poll operations will return this state until a different state is
-// frozen or dvrPoseClientModeSet() is called with a different mode. The timestamp is
-// not frozen.
-//
-// @param client Pointer to the pose client.
-// @param frozen_state State pose to be frozen to.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientFreeze(DvrPoseClient* client, const DvrPose* frozen_state);
-
-// Sets the pose service mode.
-//
-// @param mode The requested pose mode.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientModeSet(DvrPoseClient* client, DvrPoseMode mode);
-
-// Gets the pose service mode.
-//
-// @param mode Return value for the current pose mode.
-// @return Zero on success, negative error code on failure.
-int dvrPoseClientModeGet(DvrPoseClient* client, DvrPoseMode* mode);
-
-// Get access to the shared memory pose ring buffer.
-// A future pose at vsync <current> + <offset> is accessed at index:
-//   index = (<current> + <offset>) % out_buffer_size
-// Where <current> was the last value returned by dvrPresent and
-// <offset> is less than or equal to |out_min_future_count|.
-// |out_buffer| will be set to a pointer to the buffer.
-// |out_fd| will be set to the gralloc buffer file descriptor, which is
-//   required for binding this buffer for GPU use.
-// Returns 0 on success.
-int dvrPoseClientGetRingBuffer(DvrPoseClient* client,
-                               DvrPoseRingBufferInfo* out_info);
-
-// Sets enabled state for sensors pose processing.
-//
-// @param enabled Whether sensors are enabled or disabled.
-// @return Zero on success
-int dvrPoseClientSensorsEnable(DvrPoseClient* client, bool enabled);
-
-// Requests a burst of data samples from pose service. The data samples are
-// passed through a shared memory buffer obtained by calling
-// dvrPoseClientGetDataReader().
-//
-// @param DvrPoseDataCaptureRequest Parameters on how to capture data.
-// @return Zero on success.
-int dvrPoseClientDataCapture(DvrPoseClient* client,
-                             const DvrPoseDataCaptureRequest* request);
-
-// Destroys the write buffer queue for the given |data_type|.
-int dvrPoseClientDataReaderDestroy(DvrPoseClient* client, uint64_t data_type);
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  // ANDROID_DVR_POSE_CLIENT_H_
diff --git a/libs/vr/libvrsensor/include/private/dvr/latency_model.h b/libs/vr/libvrsensor/include/private/dvr/latency_model.h
deleted file mode 100644
index bf0e687..0000000
--- a/libs/vr/libvrsensor/include/private/dvr/latency_model.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef ANDROID_DVR_LATENCY_MODEL_H_
-#define ANDROID_DVR_LATENCY_MODEL_H_
-
-#include <vector>
-
-namespace android {
-namespace dvr {
-
-// This class models the latency from sensors. It will look at the first
-// window_size measurements and return their average after that.
-class LatencyModel {
- public:
-  explicit LatencyModel(size_t window_size);
-  ~LatencyModel() = default;
-
-  void AddLatency(int64_t latency_ns);
-  int64_t CurrentLatencyEstimate() const { return latency_; }
-
- private:
-  size_t window_size_;
-  int64_t latency_sum_ = 0;
-  size_t num_summed_ = 0;
-  int64_t latency_ = 0;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_LATENCY_MODEL_H_
diff --git a/libs/vr/libvrsensor/include/private/dvr/pose-ipc.h b/libs/vr/libvrsensor/include/private/dvr/pose-ipc.h
deleted file mode 100644
index 7bf1cd4..0000000
--- a/libs/vr/libvrsensor/include/private/dvr/pose-ipc.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef ANDROID_DVR_POSE_IPC_H_
-#define ANDROID_DVR_POSE_IPC_H_
-
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define DVR_POSE_SERVICE_BASE "system/vr/pose"
-#define DVR_POSE_SERVICE_CLIENT (DVR_POSE_SERVICE_BASE "/client")
-
-enum {
-  DVR_POSE_FREEZE = 0,
-  DVR_POSE_SET_MODE,
-  DVR_POSE_GET_MODE,
-  DVR_POSE_GET_CONTROLLER_RING_BUFFER,
-  DVR_POSE_LOG_CONTROLLER,
-  DVR_POSE_SENSORS_ENABLE,
-  DVR_POSE_GET_TANGO_READER,
-  DVR_POSE_DATA_CAPTURE,
-  DVR_POSE_TANGO_READER_DESTROY,
-};
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  // ANDROID_DVR_POSE_IPC_H_
diff --git a/libs/vr/libvrsensor/include/private/dvr/pose_client_internal.h b/libs/vr/libvrsensor/include/private/dvr/pose_client_internal.h
deleted file mode 100644
index 39592bb..0000000
--- a/libs/vr/libvrsensor/include/private/dvr/pose_client_internal.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef ANDROID_DVR_POSE_CLIENT_INTERNAL_H_
-#define ANDROID_DVR_POSE_CLIENT_INTERNAL_H_
-
-#include <private/dvr/buffer_hub_queue_client.h>
-
-using android::dvr::ConsumerQueue;
-
-typedef struct DvrPoseClient DvrPoseClient;
-
-namespace android {
-namespace dvr {
-
-int dvrPoseClientGetDataReaderHandle(DvrPoseClient *client, uint64_t data_type,
-                                     ConsumerQueue **queue_out);
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_POSE_CLIENT_INTERNAL_H_
diff --git a/libs/vr/libvrsensor/latency_model.cpp b/libs/vr/libvrsensor/latency_model.cpp
deleted file mode 100644
index d3a4521..0000000
--- a/libs/vr/libvrsensor/latency_model.cpp
+++ /dev/null
@@ -1,24 +0,0 @@
-#include <private/dvr/latency_model.h>
-
-#include <cmath>
-
-namespace android {
-namespace dvr {
-
-LatencyModel::LatencyModel(size_t window_size) : window_size_(window_size) {}
-
-void LatencyModel::AddLatency(int64_t latency_ns) {
-  // Not enough samples yet?
-  if (num_summed_ < window_size_) {
-    // Accumulate.
-    latency_sum_ += latency_ns;
-
-    // Have enough samples for latency estimate?
-    if (++num_summed_ == window_size_) {
-      latency_ = latency_sum_ / window_size_;
-    }
-  }
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/libs/vr/libvrsensor/pose_client.cpp b/libs/vr/libvrsensor/pose_client.cpp
deleted file mode 100644
index 4ff6a09..0000000
--- a/libs/vr/libvrsensor/pose_client.cpp
+++ /dev/null
@@ -1,368 +0,0 @@
-#define LOG_TAG "PoseClient"
-#include <dvr/dvr_shared_buffers.h>
-#include <dvr/pose_client.h>
-
-#include <stdint.h>
-
-#include <log/log.h>
-#include <pdx/client.h>
-#include <pdx/default_transport/client_channel_factory.h>
-#include <pdx/file_handle.h>
-#include <private/dvr/buffer_hub_queue_client.h>
-#include <private/dvr/consumer_buffer.h>
-#include <private/dvr/display_client.h>
-#include <private/dvr/pose-ipc.h>
-#include <private/dvr/shared_buffer_helpers.h>
-
-using android::dvr::ConsumerQueue;
-using android::pdx::LocalHandle;
-using android::pdx::LocalChannelHandle;
-using android::pdx::Status;
-using android::pdx::Transaction;
-
-namespace android {
-namespace dvr {
-namespace {
-
-typedef CPUMappedBroadcastRing<DvrPoseRing> SensorPoseRing;
-
-constexpr static int32_t MAX_CONTROLLERS = 2;
-}  // namespace
-
-// PoseClient is a remote interface to the pose service in sensord.
-class PoseClient : public pdx::ClientBase<PoseClient> {
- public:
-  ~PoseClient() override {}
-
-  // Casts C handle into an instance of this class.
-  static PoseClient* FromC(DvrPoseClient* client) {
-    return reinterpret_cast<PoseClient*>(client);
-  }
-
-  // Polls the pose service for the current state and stores it in *state.
-  // Returns zero on success, a negative error code otherwise.
-  int Poll(DvrPose* state) {
-    // Allocate the helper class to access the sensor pose buffer.
-    if (sensor_pose_buffer_ == nullptr) {
-      sensor_pose_buffer_ = std::make_unique<SensorPoseRing>(
-          DvrGlobalBuffers::kSensorPoseBuffer, CPUUsageMode::READ_RARELY);
-    }
-
-    if (state) {
-      if (sensor_pose_buffer_->GetNewest(state)) {
-        return 0;
-      } else {
-        return -EAGAIN;
-      }
-    }
-
-    return -EINVAL;
-  }
-
-  int GetPose(uint32_t vsync_count, DvrPoseAsync* out_pose) {
-    const auto vsync_buffer = GetVsyncBuffer();
-    if (vsync_buffer) {
-      *out_pose =
-          vsync_buffer
-              ->vsync_poses[vsync_count & DvrVsyncPoseBuffer::kIndexMask];
-      return 0;
-    } else {
-      return -EAGAIN;
-    }
-  }
-
-  uint32_t GetVsyncCount() {
-    const auto vsync_buffer = GetVsyncBuffer();
-    if (vsync_buffer) {
-      return vsync_buffer->vsync_count;
-    }
-
-    return 0;
-  }
-
-  int GetControllerPose(int32_t controller_id, uint32_t vsync_count,
-                        DvrPoseAsync* out_pose) {
-    if (controller_id < 0 || controller_id >= MAX_CONTROLLERS) {
-      return -EINVAL;
-    }
-    if (!controllers_[controller_id].mapped_pose_buffer) {
-      int ret = GetControllerRingBuffer(controller_id);
-      if (ret < 0)
-        return ret;
-    }
-    *out_pose =
-        controllers_[controller_id]
-            .mapped_pose_buffer[vsync_count & DvrVsyncPoseBuffer::kIndexMask];
-    return 0;
-  }
-
-  int LogController(bool enable) {
-    Transaction trans{*this};
-    Status<int> status = trans.Send<int>(DVR_POSE_LOG_CONTROLLER, &enable,
-                                         sizeof(enable), nullptr, 0);
-    ALOGE_IF(!status, "Pose LogController() failed because: %s",
-             status.GetErrorMessage().c_str());
-    return ReturnStatusOrError(status);
-  }
-
-  // Freezes the pose to the provided state. Future poll operations will return
-  // this state until a different state is frozen or SetMode() is called with a
-  // different mode.
-  // Returns zero on success, a negative error code otherwise.
-  int Freeze(const DvrPose& frozen_state) {
-    Transaction trans{*this};
-    Status<int> status = trans.Send<int>(DVR_POSE_FREEZE, &frozen_state,
-                                         sizeof(frozen_state), nullptr, 0);
-    ALOGE_IF(!status, "Pose Freeze() failed because: %s\n",
-             status.GetErrorMessage().c_str());
-    return ReturnStatusOrError(status);
-  }
-
-  // Sets the data mode for the pose service.
-  int SetMode(DvrPoseMode mode) {
-    Transaction trans{*this};
-    Status<int> status =
-        trans.Send<int>(DVR_POSE_SET_MODE, &mode, sizeof(mode), nullptr, 0);
-    ALOGE_IF(!status, "Pose SetPoseMode() failed because: %s",
-             status.GetErrorMessage().c_str());
-    return ReturnStatusOrError(status);
-  }
-
-  // Gets the data mode for the pose service.
-  int GetMode(DvrPoseMode* out_mode) {
-    int mode;
-    Transaction trans{*this};
-    Status<int> status =
-        trans.Send<int>(DVR_POSE_GET_MODE, nullptr, 0, &mode, sizeof(mode));
-    ALOGE_IF(!status, "Pose GetPoseMode() failed because: %s",
-             status.GetErrorMessage().c_str());
-    if (status)
-      *out_mode = DvrPoseMode(mode);
-    return ReturnStatusOrError(status);
-  }
-
-  int GetTangoReaderHandle(uint64_t data_type, ConsumerQueue** queue_out) {
-    // Get buffer.
-    Transaction trans{*this};
-    Status<LocalChannelHandle> status = trans.Send<LocalChannelHandle>(
-        DVR_POSE_GET_TANGO_READER, &data_type, sizeof(data_type), nullptr, 0);
-
-    if (!status) {
-      ALOGE("PoseClient GetTangoReaderHandle() failed because: %s",
-            status.GetErrorMessage().c_str());
-      *queue_out = nullptr;
-      return -status.error();
-    }
-
-    std::unique_ptr<ConsumerQueue> consumer_queue =
-        ConsumerQueue::Import(status.take());
-    *queue_out = consumer_queue.release();
-    return 0;
-  }
-
-  int DataCapture(const DvrPoseDataCaptureRequest* request) {
-    Transaction trans{*this};
-    Status<int> status = trans.Send<int>(DVR_POSE_DATA_CAPTURE, request,
-                                         sizeof(*request), nullptr, 0);
-    ALOGE_IF(!status, "PoseClient DataCapture() failed because: %s\n",
-             status.GetErrorMessage().c_str());
-    return ReturnStatusOrError(status);
-  }
-
-  int DataReaderDestroy(uint64_t data_type) {
-    Transaction trans{*this};
-    Status<int> status = trans.Send<int>(DVR_POSE_TANGO_READER_DESTROY,
-                                         &data_type, sizeof(data_type), nullptr,
-                                         0);
-    ALOGE_IF(!status, "PoseClient DataReaderDestroy() failed because: %s\n",
-             status.GetErrorMessage().c_str());
-    return ReturnStatusOrError(status);
-  }
-
-  // Enables or disables all pose processing from sensors
-  int EnableSensors(bool enabled) {
-    Transaction trans{*this};
-    Status<int> status = trans.Send<int>(DVR_POSE_SENSORS_ENABLE, &enabled,
-                                         sizeof(enabled), nullptr, 0);
-    ALOGE_IF(!status, "Pose EnableSensors() failed because: %s\n",
-             status.GetErrorMessage().c_str());
-    return ReturnStatusOrError(status);
-  }
-
-  int GetRingBuffer(DvrPoseRingBufferInfo* out_info) {
-    // First time mapping the buffer?
-    const auto vsync_buffer = GetVsyncBuffer();
-    if (vsync_buffer) {
-      if (out_info) {
-        out_info->min_future_count = DvrVsyncPoseBuffer::kMinFutureCount;
-        out_info->total_count = DvrVsyncPoseBuffer::kSize;
-        out_info->buffer = vsync_buffer->vsync_poses;
-      }
-      return -EINVAL;
-    }
-
-    return -EAGAIN;
-  }
-
-  int GetControllerRingBuffer(int32_t controller_id) {
-    if (controller_id < 0 || controller_id >= MAX_CONTROLLERS) {
-      return -EINVAL;
-    }
-    ControllerClientState& client_state = controllers_[controller_id];
-    if (client_state.pose_buffer.get()) {
-      return 0;
-    }
-
-    Transaction trans{*this};
-    Status<LocalChannelHandle> status = trans.Send<LocalChannelHandle>(
-        DVR_POSE_GET_CONTROLLER_RING_BUFFER, &controller_id,
-        sizeof(controller_id), nullptr, 0);
-    if (!status) {
-      return -status.error();
-    }
-
-    auto buffer = ConsumerBuffer::Import(status.take());
-    if (!buffer) {
-      ALOGE("Pose failed to import ring buffer");
-      return -EIO;
-    }
-    constexpr size_t size = DvrVsyncPoseBuffer::kSize * sizeof(DvrPoseAsync);
-    void* addr = nullptr;
-    int ret = buffer->GetBlobReadWritePointer(size, &addr);
-    if (ret < 0 || !addr) {
-      ALOGE("Pose failed to map ring buffer: ret:%d, addr:%p", ret, addr);
-      return -EIO;
-    }
-    client_state.pose_buffer.swap(buffer);
-    client_state.mapped_pose_buffer = static_cast<const DvrPoseAsync*>(addr);
-    ALOGI(
-        "Mapped controller %d pose data translation %f,%f,%f quat %f,%f,%f,%f",
-        controller_id, client_state.mapped_pose_buffer[0].position[0],
-        client_state.mapped_pose_buffer[0].position[1],
-        client_state.mapped_pose_buffer[0].position[2],
-        client_state.mapped_pose_buffer[0].orientation[0],
-        client_state.mapped_pose_buffer[0].orientation[1],
-        client_state.mapped_pose_buffer[0].orientation[2],
-        client_state.mapped_pose_buffer[0].orientation[3]);
-    return 0;
-  }
-
- private:
-  friend BASE;
-
-  // Set up a channel to the pose service.
-  PoseClient()
-      : BASE(pdx::default_transport::ClientChannelFactory::Create(
-            DVR_POSE_SERVICE_CLIENT)) {
-    // TODO(eieio): Cache the pose and make timeout 0 so that the API doesn't
-    // block while waiting for the pose service to come back up.
-    EnableAutoReconnect(kInfiniteTimeout);
-  }
-
-  PoseClient(const PoseClient&) = delete;
-  PoseClient& operator=(const PoseClient&) = delete;
-
-  const DvrVsyncPoseBuffer* GetVsyncBuffer() {
-    if (mapped_vsync_pose_buffer_ == nullptr) {
-      if (vsync_pose_buffer_ == nullptr) {
-        // The constructor tries mapping it so we do not need TryMapping after.
-        vsync_pose_buffer_ = std::make_unique<CPUMappedBuffer>(
-            DvrGlobalBuffers::kVsyncPoseBuffer, CPUUsageMode::READ_OFTEN);
-      } else if (vsync_pose_buffer_->IsMapped() == false) {
-        vsync_pose_buffer_->TryMapping();
-      }
-
-      if (vsync_pose_buffer_->IsMapped()) {
-        mapped_vsync_pose_buffer_ =
-            static_cast<DvrVsyncPoseBuffer*>(vsync_pose_buffer_->Address());
-      }
-    }
-
-    return mapped_vsync_pose_buffer_;
-  }
-
-  // The vsync pose buffer if already mapped.
-  std::unique_ptr<CPUMappedBuffer> vsync_pose_buffer_;
-
-  // The direct sensor pose buffer.
-  std::unique_ptr<SensorPoseRing> sensor_pose_buffer_;
-
-  const DvrVsyncPoseBuffer* mapped_vsync_pose_buffer_ = nullptr;
-
-  struct ControllerClientState {
-    std::unique_ptr<ConsumerBuffer> pose_buffer;
-    const DvrPoseAsync* mapped_pose_buffer = nullptr;
-  };
-  ControllerClientState controllers_[MAX_CONTROLLERS];
-};
-
-int dvrPoseClientGetDataReaderHandle(DvrPoseClient* client, uint64_t type,
-                                     ConsumerQueue** queue_out) {
-  return PoseClient::FromC(client)->GetTangoReaderHandle(type, queue_out);
-}
-
-}  // namespace dvr
-}  // namespace android
-
-using android::dvr::PoseClient;
-
-extern "C" {
-
-DvrPoseClient* dvrPoseClientCreate() {
-  auto* client = PoseClient::Create().release();
-  return reinterpret_cast<DvrPoseClient*>(client);
-}
-
-void dvrPoseClientDestroy(DvrPoseClient* client) {
-  delete PoseClient::FromC(client);
-}
-
-int dvrPoseClientGet(DvrPoseClient* client, uint32_t vsync_count,
-                     DvrPoseAsync* out_pose) {
-  return PoseClient::FromC(client)->GetPose(vsync_count, out_pose);
-}
-
-uint32_t dvrPoseClientGetVsyncCount(DvrPoseClient* client) {
-  return PoseClient::FromC(client)->GetVsyncCount();
-}
-
-int dvrPoseClientGetController(DvrPoseClient* client, int32_t controller_id,
-                               uint32_t vsync_count, DvrPoseAsync* out_pose) {
-  return PoseClient::FromC(client)->GetControllerPose(controller_id,
-                                                      vsync_count, out_pose);
-}
-
-int dvrPoseClientLogController(DvrPoseClient* client, bool enable) {
-  return PoseClient::FromC(client)->LogController(enable);
-}
-
-int dvrPoseClientPoll(DvrPoseClient* client, DvrPose* state) {
-  return PoseClient::FromC(client)->Poll(state);
-}
-
-int dvrPoseClientFreeze(DvrPoseClient* client, const DvrPose* frozen_state) {
-  return PoseClient::FromC(client)->Freeze(*frozen_state);
-}
-
-int dvrPoseClientModeSet(DvrPoseClient* client, DvrPoseMode mode) {
-  return PoseClient::FromC(client)->SetMode(mode);
-}
-
-int dvrPoseClientModeGet(DvrPoseClient* client, DvrPoseMode* mode) {
-  return PoseClient::FromC(client)->GetMode(mode);
-}
-
-int dvrPoseClientSensorsEnable(DvrPoseClient* client, bool enabled) {
-  return PoseClient::FromC(client)->EnableSensors(enabled);
-}
-
-int dvrPoseClientDataCapture(DvrPoseClient* client,
-                             const DvrPoseDataCaptureRequest* request) {
-  return PoseClient::FromC(client)->DataCapture(request);
-}
-
-int dvrPoseClientDataReaderDestroy(DvrPoseClient* client, uint64_t data_type) {
-  return PoseClient::FromC(client)->DataReaderDestroy(data_type);
-}
-
-}  // extern "C"
diff --git a/services/inputflinger/InputListener.cpp b/services/inputflinger/InputListener.cpp
index 2a3924b..dce327e 100644
--- a/services/inputflinger/InputListener.cpp
+++ b/services/inputflinger/InputListener.cpp
@@ -196,9 +196,20 @@
         }
         coords += StringPrintf("{%" PRIu32 ": ", i);
         coords +=
-                StringPrintf("id=%" PRIu32 " x=%.1f y=%.1f, pressure=%.1f", pointerProperties[i].id,
+                StringPrintf("id=%" PRIu32 " x=%.1f y=%.1f pressure=%.1f", pointerProperties[i].id,
                              pointerCoords[i].getX(), pointerCoords[i].getY(),
                              pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE));
+        const int32_t toolType = pointerProperties[i].toolType;
+        if (toolType != AMOTION_EVENT_TOOL_TYPE_FINGER) {
+            coords += StringPrintf(" toolType=%s", motionToolTypeToString(toolType));
+        }
+        const float major = pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR);
+        const float minor = pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR);
+        const float orientation = pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION);
+        if (major != 0 || minor != 0) {
+            coords += StringPrintf(" major=%.1f minor=%.1f orientation=%.1f", major, minor,
+                                   orientation);
+        }
         coords += "}";
     }
     return StringPrintf("NotifyMotionArgs(id=%" PRId32 ", eventTime=%" PRId64 ", deviceId=%" PRId32
diff --git a/services/inputflinger/TEST_MAPPING b/services/inputflinger/TEST_MAPPING
index b4b617e..8d5d883 100644
--- a/services/inputflinger/TEST_MAPPING
+++ b/services/inputflinger/TEST_MAPPING
@@ -15,6 +15,9 @@
       "name": "inputflinger_tests"
     },
     {
+      "name": "libchrome-gestures_test"
+    },
+    {
       "name": "libpalmrejection_test"
     },
     {
diff --git a/services/inputflinger/UnwantedInteractionBlocker.cpp b/services/inputflinger/UnwantedInteractionBlocker.cpp
index f57ff33..ec41025 100644
--- a/services/inputflinger/UnwantedInteractionBlocker.cpp
+++ b/services/inputflinger/UnwantedInteractionBlocker.cpp
@@ -29,8 +29,40 @@
 
 using android::base::StringPrintf;
 
+/**
+ * This type is declared here to ensure consistency between the instantiated type (used in the
+ * constructor via std::make_unique) and the cast-to type (used in PalmRejector::dump() with
+ * static_cast). Due to the lack of rtti support, dynamic_cast is not available, so this can't be
+ * checked at runtime to avoid undefined behaviour.
+ */
+using PalmFilterImplementation = ::ui::NeuralStylusPalmDetectionFilter;
+
 namespace android {
 
+/**
+ * Log detailed debug messages about each inbound motion event notification to the blocker.
+ * Enable this via "adb shell setprop log.tag.UnwantedInteractionBlockerInboundMotion DEBUG"
+ * (requires restart)
+ */
+const bool DEBUG_INBOUND_MOTION =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "InboundMotion", ANDROID_LOG_INFO);
+
+/**
+ * Log detailed debug messages about each outbound motion event processed by the blocker.
+ * Enable this via "adb shell setprop log.tag.UnwantedInteractionBlockerOutboundMotion DEBUG"
+ * (requires restart)
+ */
+const bool DEBUG_OUTBOUND_MOTION =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "OutboundMotion", ANDROID_LOG_INFO);
+
+/**
+ * Log the data sent to the model and received back from the model.
+ * Enable this via "adb shell setprop log.tag.UnwantedInteractionBlockerModel DEBUG"
+ * (requires restart)
+ */
+const bool DEBUG_MODEL =
+        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Model", ANDROID_LOG_INFO);
+
 // Category (=namespace) name for the input settings that are applied at boot time
 static const char* INPUT_NATIVE_BOOT = "input_native_boot";
 /**
@@ -45,13 +77,11 @@
 }
 
 static bool isFromTouchscreen(int32_t source) {
-    return isFromSource(source, AINPUT_SOURCE_TOUCHSCREEN) &&
-            !isFromSource(source, AINPUT_SOURCE_STYLUS);
+    return isFromSource(source, AINPUT_SOURCE_TOUCHSCREEN);
 }
 
 static ::base::TimeTicks toChromeTimestamp(nsecs_t eventTime) {
-    return ::base::TimeTicks::UnixEpoch() +
-            ::base::Milliseconds(static_cast<float>(ns2ms(eventTime)));
+    return ::base::TimeTicks::UnixEpoch() + ::base::TimeDelta::FromNanosecondsD(eventTime);
 }
 
 /**
@@ -61,39 +91,22 @@
 static bool isPalmRejectionEnabled() {
     std::string value = toLower(
             server_configurable_flags::GetServerConfigurableFlag(INPUT_NATIVE_BOOT,
-                                                                 PALM_REJECTION_ENABLED, "false"));
-    if (value == "true" || value == "1") {
+                                                                 PALM_REJECTION_ENABLED, "0"));
+    if (value == "1") {
         return true;
     }
     return false;
 }
 
-static int getLinuxToolType(int32_t toolType) {
-    switch (toolType) {
-        case AMOTION_EVENT_TOOL_TYPE_FINGER:
-            return MT_TOOL_FINGER;
-        case AMOTION_EVENT_TOOL_TYPE_STYLUS:
-            return MT_TOOL_PEN;
-        case AMOTION_EVENT_TOOL_TYPE_PALM:
-            return MT_TOOL_PALM;
+static int getLinuxToolCode(int toolType) {
+    if (toolType == AMOTION_EVENT_TOOL_TYPE_STYLUS) {
+        return BTN_TOOL_PEN;
     }
-    ALOGW("Got tool type %" PRId32 ", converting to MT_TOOL_FINGER", toolType);
-    return MT_TOOL_FINGER;
-}
-
-static std::string dumpDeviceInfo(const AndroidPalmFilterDeviceInfo& info) {
-    std::string out;
-    out += StringPrintf("max_x = %.2f\n", info.max_x);
-    out += StringPrintf("max_y = %.2f\n", info.max_y);
-    out += StringPrintf("x_res = %.2f\n", info.x_res);
-    out += StringPrintf("y_res = %.2f\n", info.y_res);
-    out += StringPrintf("major_radius_res = %.2f\n", info.major_radius_res);
-    out += StringPrintf("minor_radius_res = %.2f\n", info.minor_radius_res);
-    out += StringPrintf("minor_radius_supported = %s\n",
-                        info.minor_radius_supported ? "true" : "false");
-    out += StringPrintf("touch_major_res = %" PRId32 "\n", info.touch_major_res);
-    out += StringPrintf("touch_minor_res = %" PRId32 "\n", info.touch_minor_res);
-    return out;
+    if (toolType == AMOTION_EVENT_TOOL_TYPE_FINGER) {
+        return BTN_TOOL_FINGER;
+    }
+    ALOGW("Got tool type %" PRId32 ", converting to BTN_TOOL_FINGER", toolType);
+    return BTN_TOOL_FINGER;
 }
 
 static int32_t getActionUpForPointerId(const NotifyMotionArgs& args, int32_t pointerId) {
@@ -128,32 +141,6 @@
     return AMOTION_EVENT_ACTION_MOVE;
 }
 
-std::string toString(const ::ui::InProgressTouchEvdev& touch) {
-    return StringPrintf("x=%.1f, y=%.1f, tracking_id=%i, slot=%zu,"
-                        " pressure=%.1f, major=%i, minor=%i, "
-                        "tool_type=%i, altered=%s, was_touching=%s, touching=%s",
-                        touch.x, touch.y, touch.tracking_id, touch.slot, touch.pressure,
-                        touch.major, touch.minor, touch.tool_type, toString(touch.altered),
-                        toString(touch.was_touching), toString(touch.touching));
-}
-
-/**
- * Remove the data for the provided pointers from the args. The pointers are identified by their
- * pointerId, not by the index inside the array.
- * Return the new NotifyMotionArgs struct that has the remaining pointers.
- * The only fields that may be different in the returned args from the provided args are:
- *     - action
- *     - pointerCount
- *     - pointerProperties
- *     - pointerCoords
- * Action might change because it contains a pointer index. If another pointer is removed, the
- * active pointer index would be shifted.
- * Do not call this function for events with POINTER_UP or POINTER_DOWN events when removed pointer
- * id is the acting pointer id.
- *
- * @param args the args from which the pointers should be removed
- * @param pointerIds the pointer ids of the pointers that should be removed
- */
 NotifyMotionArgs removePointerIds(const NotifyMotionArgs& args,
                                   const std::set<int32_t>& pointerIds) {
     const uint8_t actionIndex = MotionEvent::getActionIndex(args.action);
@@ -199,6 +186,26 @@
     return newArgs;
 }
 
+/**
+ * Remove stylus pointers from the provided NotifyMotionArgs.
+ *
+ * Return NotifyMotionArgs where the stylus pointers have been removed.
+ * If this results in removal of the active pointer, then return nullopt.
+ */
+static std::optional<NotifyMotionArgs> removeStylusPointerIds(const NotifyMotionArgs& args) {
+    std::set<int32_t> stylusPointerIds;
+    for (uint32_t i = 0; i < args.pointerCount; i++) {
+        if (args.pointerProperties[i].toolType == AMOTION_EVENT_TOOL_TYPE_STYLUS) {
+            stylusPointerIds.insert(args.pointerProperties[i].id);
+        }
+    }
+    NotifyMotionArgs withoutStylusPointers = removePointerIds(args, stylusPointerIds);
+    if (withoutStylusPointers.pointerCount == 0 || withoutStylusPointers.action == ACTION_UNKNOWN) {
+        return std::nullopt;
+    }
+    return withoutStylusPointers;
+}
+
 std::optional<AndroidPalmFilterDeviceInfo> createPalmFilterDeviceInfo(
         const InputDeviceInfo& deviceInfo) {
     if (!isFromTouchscreen(deviceInfo.getSources())) {
@@ -326,6 +333,7 @@
 }
 
 void UnwantedInteractionBlocker::notifyMotion(const NotifyMotionArgs* args) {
+    ALOGD_IF(DEBUG_INBOUND_MOTION, "%s: %s", __func__, args->dump().c_str());
     { // acquire lock
         std::scoped_lock lock(mLock);
         const std::vector<NotifyMotionArgs> processedArgs =
@@ -339,17 +347,22 @@
     mQueuedListener.flush();
 }
 
+void UnwantedInteractionBlocker::enqueueOutboundMotionLocked(const NotifyMotionArgs& args) {
+    ALOGD_IF(DEBUG_OUTBOUND_MOTION, "%s: %s", __func__, args.dump().c_str());
+    mQueuedListener.notifyMotion(&args);
+}
+
 void UnwantedInteractionBlocker::notifyMotionLocked(const NotifyMotionArgs* args) {
     auto it = mPalmRejectors.find(args->deviceId);
     const bool sendToPalmRejector = it != mPalmRejectors.end() && isFromTouchscreen(args->source);
     if (!sendToPalmRejector) {
-        mQueuedListener.notifyMotion(args);
+        enqueueOutboundMotionLocked(*args);
         return;
     }
 
     std::vector<NotifyMotionArgs> processedArgs = it->second.processMotion(*args);
     for (const NotifyMotionArgs& loopArgs : processedArgs) {
-        mQueuedListener.notifyMotion(&loopArgs);
+        enqueueOutboundMotionLocked(loopArgs);
     }
 }
 
@@ -428,9 +441,10 @@
     dump += "UnwantedInteractionBlocker:\n";
     dump += "  mPreferStylusOverTouchBlocker:\n";
     dump += addLinePrefix(mPreferStylusOverTouchBlocker.dump(), "    ");
-    dump += StringPrintf("  mEnablePalmRejection: %s\n", toString(mEnablePalmRejection));
+    dump += StringPrintf("  mEnablePalmRejection: %s\n",
+                         std::to_string(mEnablePalmRejection).c_str());
     dump += StringPrintf("  isPalmRejectionEnabled (flag value): %s\n",
-                         toString(isPalmRejectionEnabled()));
+                         std::to_string(isPalmRejectionEnabled()).c_str());
     dump += mPalmRejectors.empty() ? "  mPalmRejectors: None\n" : "  mPalmRejectors:\n";
     for (const auto& [deviceId, palmRejector] : mPalmRejectors) {
         dump += StringPrintf("    deviceId = %" PRId32 ":\n", deviceId);
@@ -512,6 +526,15 @@
     return out;
 }
 
+class AndroidPalmRejectionModel : public ::ui::OneDeviceTrainNeuralStylusPalmDetectionFilterModel {
+public:
+    AndroidPalmRejectionModel()
+          : ::ui::OneDeviceTrainNeuralStylusPalmDetectionFilterModel(/*default version*/ "",
+                                                                     std::vector<float>()) {
+        config_.resample_period = ::ui::kResamplePeriod;
+    }
+};
+
 PalmRejector::PalmRejector(const AndroidPalmFilterDeviceInfo& info,
                            std::unique_ptr<::ui::PalmDetectionFilter> filter)
       : mSharedPalmState(std::make_unique<::ui::SharedPalmDetectionFilterState>()),
@@ -523,11 +546,9 @@
         return;
     }
     std::unique_ptr<::ui::NeuralStylusPalmDetectionFilterModel> model =
-            std::make_unique<::ui::OneDeviceTrainNeuralStylusPalmDetectionFilterModel>(
-                    std::vector<float>());
-    mPalmDetectionFilter =
-            std::make_unique<::ui::NeuralStylusPalmDetectionFilter>(mDeviceInfo, std::move(model),
-                                                                    mSharedPalmState.get());
+            std::make_unique<AndroidPalmRejectionModel>();
+    mPalmDetectionFilter = std::make_unique<PalmFilterImplementation>(mDeviceInfo, std::move(model),
+                                                                      mSharedPalmState.get());
 }
 
 std::vector<::ui::InProgressTouchEvdev> getTouches(const NotifyMotionArgs& args,
@@ -541,7 +562,7 @@
         touches.emplace_back(::ui::InProgressTouchEvdev());
         touches.back().major = args.pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR);
         touches.back().minor = args.pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR);
-        touches.back().tool_type = getLinuxToolType(args.pointerProperties[i].toolType);
+        // The field 'tool_type' is not used for palm rejection
 
         // Whether there is new information for the touch.
         touches.back().altered = true;
@@ -588,15 +609,57 @@
 
         // The fields 'radius_x' and 'radius_x' are not used for palm rejection
         touches.back().pressure = args.pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE);
-        touches.back().tool_code = BTN_TOOL_FINGER;
+        touches.back().tool_code = getLinuxToolCode(args.pointerProperties[i].toolType);
         // The field 'orientation' is not used for palm rejection
         // The fields 'tilt_x' and 'tilt_y' are not used for palm rejection
-        touches.back().reported_tool_type = ::ui::EventPointerType::kTouch;
+        // The field 'reported_tool_type' is not used for palm rejection
         touches.back().stylus_button = false;
     }
     return touches;
 }
 
+std::set<int32_t> PalmRejector::detectPalmPointers(const NotifyMotionArgs& args) {
+    std::bitset<::ui::kNumTouchEvdevSlots> slotsToHold;
+    std::bitset<::ui::kNumTouchEvdevSlots> slotsToSuppress;
+
+    // Store the slot state before we call getTouches and update it. This way, we can find
+    // the slots that have been removed due to the incoming event.
+    SlotState oldSlotState = mSlotState;
+    mSlotState.update(args);
+
+    std::vector<::ui::InProgressTouchEvdev> touches =
+            getTouches(args, mDeviceInfo, oldSlotState, mSlotState);
+    ::base::TimeTicks chromeTimestamp = toChromeTimestamp(args.eventTime);
+
+    if (DEBUG_MODEL) {
+        std::stringstream touchesStream;
+        for (const ::ui::InProgressTouchEvdev& touch : touches) {
+            touchesStream << touch.tracking_id << " : " << touch << "\n";
+        }
+        ALOGD("Filter: touches = %s", touchesStream.str().c_str());
+    }
+
+    mPalmDetectionFilter->Filter(touches, chromeTimestamp, &slotsToHold, &slotsToSuppress);
+
+    ALOGD_IF(DEBUG_MODEL, "Response: slotsToHold = %s, slotsToSuppress = %s",
+             slotsToHold.to_string().c_str(), slotsToSuppress.to_string().c_str());
+
+    // Now that we know which slots should be suppressed, let's convert those to pointer id's.
+    std::set<int32_t> newSuppressedIds;
+    for (size_t i = 0; i < args.pointerCount; i++) {
+        const int32_t pointerId = args.pointerProperties[i].id;
+        std::optional<size_t> slot = oldSlotState.getSlotForPointerId(pointerId);
+        if (!slot) {
+            slot = mSlotState.getSlotForPointerId(pointerId);
+            LOG_ALWAYS_FATAL_IF(!slot, "Could not find slot for pointer id %" PRId32, pointerId);
+        }
+        if (slotsToSuppress.test(*slot)) {
+            newSuppressedIds.insert(pointerId);
+        }
+    }
+    return newSuppressedIds;
+}
+
 std::vector<NotifyMotionArgs> PalmRejector::processMotion(const NotifyMotionArgs& args) {
     if (mPalmDetectionFilter == nullptr) {
         return {args};
@@ -614,32 +677,17 @@
     if (args.action == AMOTION_EVENT_ACTION_DOWN) {
         mSuppressedPointerIds.clear();
     }
-    std::bitset<::ui::kNumTouchEvdevSlots> slotsToHold;
-    std::bitset<::ui::kNumTouchEvdevSlots> slotsToSuppress;
 
-    // Store the slot state before we call getTouches and update it. This way, we can find
-    // the slots that have been removed due to the incoming event.
-    SlotState oldSlotState = mSlotState;
-    mSlotState.update(args);
-    std::vector<::ui::InProgressTouchEvdev> touches =
-            getTouches(args, mDeviceInfo, oldSlotState, mSlotState);
-    ::base::TimeTicks chromeTimestamp = toChromeTimestamp(args.eventTime);
-
-    mPalmDetectionFilter->Filter(touches, chromeTimestamp, &slotsToHold, &slotsToSuppress);
-
-    // Now that we know which slots should be suppressed, let's convert those to pointer id's.
     std::set<int32_t> oldSuppressedIds;
     std::swap(oldSuppressedIds, mSuppressedPointerIds);
-    for (size_t i = 0; i < args.pointerCount; i++) {
-        const int32_t pointerId = args.pointerProperties[i].id;
-        std::optional<size_t> slot = oldSlotState.getSlotForPointerId(pointerId);
-        if (!slot) {
-            slot = mSlotState.getSlotForPointerId(pointerId);
-            LOG_ALWAYS_FATAL_IF(!slot, "Could not find slot for pointer id %" PRId32, pointerId);
-        }
-        if (slotsToSuppress.test(*slot)) {
-            mSuppressedPointerIds.insert(pointerId);
-        }
+
+    std::optional<NotifyMotionArgs> touchOnlyArgs = removeStylusPointerIds(args);
+    if (touchOnlyArgs) {
+        mSuppressedPointerIds = detectPalmPointers(*touchOnlyArgs);
+    } else {
+        // This is a stylus-only event.
+        // We can skip this event and just keep the suppressed pointer ids the same as before.
+        mSuppressedPointerIds = oldSuppressedIds;
     }
 
     std::vector<NotifyMotionArgs> argsWithoutUnwantedPointers =
@@ -648,29 +696,40 @@
         LOG_ALWAYS_FATAL_IF(checkArgs.action == ACTION_UNKNOWN, "%s", checkArgs.dump().c_str());
     }
 
-    if (mSuppressedPointerIds != oldSuppressedIds) {
-        if (argsWithoutUnwantedPointers.size() != 1 ||
-            argsWithoutUnwantedPointers[0].pointerCount != args.pointerCount) {
-            ALOGI("Palm detected, removing pointer ids %s from %s",
-                  dumpSet(mSuppressedPointerIds).c_str(), args.dump().c_str());
-        }
+    // Only log if new pointers are getting rejected. That means mSuppressedPointerIds is not a
+    // subset of oldSuppressedIds.
+    if (!std::includes(oldSuppressedIds.begin(), oldSuppressedIds.end(),
+                       mSuppressedPointerIds.begin(), mSuppressedPointerIds.end())) {
+        ALOGI("Palm detected, removing pointer ids %s after %" PRId64 "ms from %s",
+              dumpSet(mSuppressedPointerIds).c_str(), ns2ms(args.eventTime - args.downTime),
+              args.dump().c_str());
     }
 
     return argsWithoutUnwantedPointers;
 }
 
-const AndroidPalmFilterDeviceInfo& PalmRejector::getPalmFilterDeviceInfo() {
+const AndroidPalmFilterDeviceInfo& PalmRejector::getPalmFilterDeviceInfo() const {
     return mDeviceInfo;
 }
 
 std::string PalmRejector::dump() const {
     std::string out;
     out += "mDeviceInfo:\n";
-    out += addLinePrefix(dumpDeviceInfo(mDeviceInfo), "  ");
+    std::stringstream deviceInfo;
+    deviceInfo << mDeviceInfo << ", touch_major_res=" << mDeviceInfo.touch_major_res
+               << ", touch_minor_res=" << mDeviceInfo.touch_minor_res << "\n";
+    out += addLinePrefix(deviceInfo.str(), "  ");
     out += "mSlotState:\n";
     out += addLinePrefix(mSlotState.dump(), "  ");
     out += "mSuppressedPointerIds: ";
     out += dumpSet(mSuppressedPointerIds) + "\n";
+    std::stringstream state;
+    state << *mSharedPalmState;
+    out += "mSharedPalmState: " + state.str() + "\n";
+    std::stringstream filter;
+    filter << static_cast<const PalmFilterImplementation&>(*mPalmDetectionFilter);
+    out += "mPalmDetectionFilter:\n";
+    out += addLinePrefix(filter.str(), "  ") + "\n";
     return out;
 }
 
diff --git a/services/inputflinger/UnwantedInteractionBlocker.h b/services/inputflinger/UnwantedInteractionBlocker.h
index a433764..5d0dde8 100644
--- a/services/inputflinger/UnwantedInteractionBlocker.h
+++ b/services/inputflinger/UnwantedInteractionBlocker.h
@@ -43,6 +43,25 @@
 
 static constexpr int32_t ACTION_UNKNOWN = -1;
 
+/**
+ * Remove the data for the provided pointers from the args. The pointers are identified by their
+ * pointerId, not by the index inside the array.
+ * Return the new NotifyMotionArgs struct that has the remaining pointers.
+ * The only fields that may be different in the returned args from the provided args are:
+ *     - action
+ *     - pointerCount
+ *     - pointerProperties
+ *     - pointerCoords
+ * Action might change because it contains a pointer index. If another pointer is removed, the
+ * active pointer index would be shifted.
+ *
+ * If the active pointer id is removed (for example, for events like
+ * POINTER_UP or POINTER_DOWN), then the action is set to ACTION_UNKNOWN. It is up to the caller
+ * to set the action appropriately after the call.
+ *
+ * @param args the args from which the pointers should be removed
+ * @param pointerIds the pointer ids of the pointers that should be removed
+ */
 NotifyMotionArgs removePointerIds(const NotifyMotionArgs& args,
                                   const std::set<int32_t>& pointerIds);
 
@@ -101,6 +120,9 @@
     std::map<int32_t /*deviceId*/, PalmRejector> mPalmRejectors GUARDED_BY(mLock);
     // TODO(b/210159205): delete this when simultaneous stylus and touch is supported
     void notifyMotionLocked(const NotifyMotionArgs* args) REQUIRES(mLock);
+
+    // Call this function for outbound events so that they can be logged when logging is enabled.
+    void enqueueOutboundMotionLocked(const NotifyMotionArgs& args) REQUIRES(mLock);
 };
 
 class SlotState {
@@ -144,13 +166,21 @@
     std::vector<NotifyMotionArgs> processMotion(const NotifyMotionArgs& args);
 
     // Get the device info of this device, for comparison purposes
-    const AndroidPalmFilterDeviceInfo& getPalmFilterDeviceInfo();
+    const AndroidPalmFilterDeviceInfo& getPalmFilterDeviceInfo() const;
     std::string dump() const;
 
 private:
     PalmRejector(const PalmRejector&) = delete;
     PalmRejector& operator=(const PalmRejector&) = delete;
 
+    /**
+     * Update the slot state and send this event to the palm rejection model for palm detection.
+     * Return the pointer ids that should be suppressed.
+     *
+     * This function is not const because it has side-effects. It will update the slot state using
+     * the incoming args! Also, it will call Filter(..), which has side-effects.
+     */
+    std::set<int32_t> detectPalmPointers(const NotifyMotionArgs& args);
     std::unique_ptr<::ui::SharedPalmDetectionFilterState> mSharedPalmState;
     AndroidPalmFilterDeviceInfo mDeviceInfo;
     std::unique_ptr<::ui::PalmDetectionFilter> mPalmDetectionFilter;
diff --git a/services/inputflinger/dispatcher/DebugConfig.h b/services/inputflinger/dispatcher/DebugConfig.h
index 4f8995f..9a2aea6 100644
--- a/services/inputflinger/dispatcher/DebugConfig.h
+++ b/services/inputflinger/dispatcher/DebugConfig.h
@@ -75,11 +75,8 @@
 
 /**
  * Log debug messages about touch occlusion
- * Enable this via "adb shell setprop log.tag.InputDispatcherTouchOcclusion DEBUG" (requires
- * restart)
  */
-const bool DEBUG_TOUCH_OCCLUSION =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "TouchOcclusion", ANDROID_LOG_INFO);
+constexpr bool DEBUG_TOUCH_OCCLUSION = true;
 
 /**
  * Log debug messages about the app switch latency optimization.
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 564acc0..b0f5932 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -2195,10 +2195,7 @@
 
             // Update the temporary touch state.
             BitSet32 pointerIds;
-            if (isSplit) {
-                uint32_t pointerId = entry.pointerProperties[pointerIndex].id;
-                pointerIds.markBit(pointerId);
-            }
+            pointerIds.markBit(entry.pointerProperties[pointerIndex].id);
 
             tempTouchState.addOrUpdateWindow(windowHandle, targetFlags, pointerIds);
         }
@@ -2275,9 +2272,7 @@
                 }
 
                 BitSet32 pointerIds;
-                if (isSplit) {
-                    pointerIds.markBit(entry.pointerProperties[0].id);
-                }
+                pointerIds.markBit(entry.pointerProperties[0].id);
                 tempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds);
             }
         }
@@ -2453,21 +2448,28 @@
             }
         } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) {
             // One pointer went up.
-            if (isSplit) {
-                int32_t pointerIndex = getMotionEventActionPointerIndex(action);
-                uint32_t pointerId = entry.pointerProperties[pointerIndex].id;
+            int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+            uint32_t pointerId = entry.pointerProperties[pointerIndex].id;
 
-                for (size_t i = 0; i < tempTouchState.windows.size();) {
-                    TouchedWindow& touchedWindow = tempTouchState.windows[i];
-                    if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) {
-                        touchedWindow.pointerIds.clearBit(pointerId);
-                        if (touchedWindow.pointerIds.isEmpty()) {
-                            tempTouchState.windows.erase(tempTouchState.windows.begin() + i);
-                            continue;
-                        }
-                    }
-                    i += 1;
+            for (size_t i = 0; i < tempTouchState.windows.size();) {
+                TouchedWindow& touchedWindow = tempTouchState.windows[i];
+                touchedWindow.pointerIds.clearBit(pointerId);
+                if (touchedWindow.pointerIds.isEmpty()) {
+                    tempTouchState.windows.erase(tempTouchState.windows.begin() + i);
+                    continue;
                 }
+                i += 1;
+            }
+        } else if (!isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN) {
+            // If no split, we suppose all touched windows should receive pointer down.
+            const int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+            for (size_t i = 0; i < tempTouchState.windows.size(); i++) {
+                TouchedWindow& touchedWindow = tempTouchState.windows[i];
+                // Ignore drag window for it should just track one pointer.
+                if (mDragState && mDragState->dragWindow == touchedWindow.windowHandle) {
+                    continue;
+                }
+                touchedWindow.pointerIds.markBit(entry.pointerProperties[pointerIndex].id);
             }
         }
 
@@ -4479,6 +4481,14 @@
     if (it == mDisplayInfos.end()) return;
     const auto& transformToDisplay = it->second.transform.inverse() * injectedTransform;
 
+    if (entry.xCursorPosition != AMOTION_EVENT_INVALID_CURSOR_POSITION &&
+        entry.yCursorPosition != AMOTION_EVENT_INVALID_CURSOR_POSITION) {
+        const vec2 cursor =
+                MotionEvent::calculateTransformedXY(entry.source, transformToDisplay,
+                                                    {entry.xCursorPosition, entry.yCursorPosition});
+        entry.xCursorPosition = cursor.x;
+        entry.yCursorPosition = cursor.y;
+    }
     for (uint32_t i = 0; i < entry.pointerCount; i++) {
         entry.pointerCoords[i] =
                 MotionEvent::calculateTransformedCoords(entry.source, transformToDisplay,
@@ -4721,10 +4731,13 @@
     updateWindowHandlesForDisplayLocked(windowInfoHandles, displayId);
 
     const std::vector<sp<WindowInfoHandle>>& windowHandles = getWindowHandlesLocked(displayId);
-    if (mLastHoverWindowHandle &&
-        std::find(windowHandles.begin(), windowHandles.end(), mLastHoverWindowHandle) ==
-                windowHandles.end()) {
-        mLastHoverWindowHandle = nullptr;
+    if (mLastHoverWindowHandle) {
+        const WindowInfo* lastHoverWindowInfo = mLastHoverWindowHandle->getInfo();
+        if (lastHoverWindowInfo->displayId == displayId &&
+            std::find(windowHandles.begin(), windowHandles.end(), mLastHoverWindowHandle) ==
+                    windowHandles.end()) {
+            mLastHoverWindowHandle = nullptr;
+        }
     }
 
     std::optional<FocusResolver::FocusChanges> changes =
@@ -5088,14 +5101,13 @@
 
         // Store the dragging window.
         if (isDragDrop) {
-            if (pointerIds.count() > 1) {
-                ALOGW("The drag and drop cannot be started when there is more than 1 pointer on the"
-                      " window.");
+            if (pointerIds.count() != 1) {
+                ALOGW("The drag and drop cannot be started when there is no pointer or more than 1"
+                      " pointer on the window.");
                 return false;
             }
-            // If the window didn't not support split or the source is mouse, the pointerIds count
-            // would be 0, so we have to track the pointer 0.
-            const int32_t id = pointerIds.count() == 0 ? 0 : pointerIds.firstMarkedBit();
+            // Track the pointer id for drag window and generate the drag state.
+            const int32_t id = pointerIds.firstMarkedBit();
             mDragState = std::make_unique<DragState>(toWindowHandle, id);
         }
 
@@ -6331,6 +6343,13 @@
 
     { // acquire lock
         std::scoped_lock _l(mLock);
+
+        // Ensure that we have an entry created for all existing displays so that if a displayId has
+        // no windows, we can tell that the windows were removed from the display.
+        for (const auto& [displayId, _] : mWindowHandlesByDisplay) {
+            handlesPerDisplay[displayId];
+        }
+
         mDisplayInfos.clear();
         for (const auto& displayInfo : displayInfos) {
             mDisplayInfos.emplace(displayInfo.displayId, displayInfo);
diff --git a/services/inputflinger/dispatcher/InputTarget.cpp b/services/inputflinger/dispatcher/InputTarget.cpp
index d39113b..2df97d9 100644
--- a/services/inputflinger/dispatcher/InputTarget.cpp
+++ b/services/inputflinger/dispatcher/InputTarget.cpp
@@ -43,8 +43,8 @@
 }
 
 void InputTarget::addPointers(BitSet32 newPointerIds, const ui::Transform& transform) {
-    // The pointerIds can be empty, but still a valid InputTarget. This can happen for Monitors
-    // and non splittable windows since we will just use all the pointers from the input event.
+    // The pointerIds can be empty, but still a valid InputTarget. This can happen when there is no
+    // valid pointer property from the input event.
     if (newPointerIds.isEmpty()) {
         setDefaultPointerTransform(transform);
         return;
diff --git a/services/inputflinger/dispatcher/TouchedWindow.h b/services/inputflinger/dispatcher/TouchedWindow.h
index 4c31ec3..6783022 100644
--- a/services/inputflinger/dispatcher/TouchedWindow.h
+++ b/services/inputflinger/dispatcher/TouchedWindow.h
@@ -29,7 +29,7 @@
 struct TouchedWindow {
     sp<gui::WindowInfoHandle> windowHandle;
     int32_t targetFlags;
-    BitSet32 pointerIds; // zero unless target flag FLAG_SPLIT is set
+    BitSet32 pointerIds;
 };
 
 } // namespace inputdispatcher
diff --git a/services/inputflinger/reader/InputDevice.cpp b/services/inputflinger/reader/InputDevice.cpp
index 0d73e07..3f26aaa 100644
--- a/services/inputflinger/reader/InputDevice.cpp
+++ b/services/inputflinger/reader/InputDevice.cpp
@@ -110,7 +110,8 @@
         dump += "<none>\n";
     }
     dump += StringPrintf(INDENT2 "HasMic:     %s\n", toString(mHasMic));
-    dump += StringPrintf(INDENT2 "Sources: 0x%08x\n", deviceInfo.getSources());
+    dump += StringPrintf(INDENT2 "Sources: %s\n",
+                         inputEventSourceToString(deviceInfo.getSources()).c_str());
     dump += StringPrintf(INDENT2 "KeyboardType: %d\n", deviceInfo.getKeyboardType());
     dump += StringPrintf(INDENT2 "ControllerNum: %d\n", deviceInfo.getControllerNumber());
 
@@ -128,10 +129,10 @@
                 snprintf(name, sizeof(name), "%d", range.axis);
             }
             dump += StringPrintf(INDENT3
-                                 "%s: source=0x%08x, "
+                                 "%s: source=%s, "
                                  "min=%0.3f, max=%0.3f, flat=%0.3f, fuzz=%0.3f, resolution=%0.3f\n",
-                                 name, range.source, range.min, range.max, range.flat, range.fuzz,
-                                 range.resolution);
+                                 name, inputEventSourceToString(range.source).c_str(), range.min,
+                                 range.max, range.flat, range.fuzz, range.resolution);
         }
     }
 
@@ -231,6 +232,10 @@
 }
 
 void InputDevice::removeEventHubDevice(int32_t eventHubId) {
+    if (mController != nullptr && mController->getEventHubId() == eventHubId) {
+        // Delete mController, since the corresponding eventhub device is going away
+        mController = nullptr;
+    }
     mDevices.erase(eventHubId);
 }
 
diff --git a/services/inputflinger/reader/InputReader.cpp b/services/inputflinger/reader/InputReader.cpp
index e9a82b4..905b348 100644
--- a/services/inputflinger/reader/InputReader.cpp
+++ b/services/inputflinger/reader/InputReader.cpp
@@ -216,9 +216,9 @@
               "(ignored non-input device)",
               device->getId(), eventHubId, identifier.name.c_str(), identifier.descriptor.c_str());
     } else {
-        ALOGI("Device added: id=%d, eventHubId=%d, name='%s', descriptor='%s',sources=0x%08x",
+        ALOGI("Device added: id=%d, eventHubId=%d, name='%s', descriptor='%s',sources=%s",
               device->getId(), eventHubId, identifier.name.c_str(), identifier.descriptor.c_str(),
-              device->getSources());
+              inputEventSourceToString(device->getSources()).c_str());
     }
 
     mDevices.emplace(eventHubId, device);
@@ -270,9 +270,10 @@
               device->getId(), eventHubId, device->getName().c_str(),
               device->getDescriptor().c_str());
     } else {
-        ALOGI("Device removed: id=%d, eventHubId=%d, name='%s', descriptor='%s', sources=0x%08x",
+        ALOGI("Device removed: id=%d, eventHubId=%d, name='%s', descriptor='%s', sources=%s",
               device->getId(), eventHubId, device->getName().c_str(),
-              device->getDescriptor().c_str(), device->getSources());
+              device->getDescriptor().c_str(),
+              inputEventSourceToString(device->getSources()).c_str());
     }
 
     device->removeEventHubDevice(eventHubId);
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.cpp b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
index 76a87bb..f4f3ae9 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.cpp
@@ -25,6 +25,8 @@
 #include "PointerControllerInterface.h"
 #include "TouchCursorInputMapperCommon.h"
 
+#include "input/PrintTools.h"
+
 namespace android {
 
 // The default velocity control parameters that has no effect.
@@ -80,7 +82,7 @@
 void CursorInputMapper::populateDeviceInfo(InputDeviceInfo* info) {
     InputMapper::populateDeviceInfo(info);
 
-    if (mParameters.mode == Parameters::MODE_POINTER) {
+    if (mParameters.mode == Parameters::Mode::POINTER) {
         float minX, minY, maxX, maxY;
         if (mPointerController->getBounds(&minX, &minY, &maxX, &maxY)) {
             info->addMotionRange(AMOTION_EVENT_AXIS_X, mSource, minX, maxX, 0.0f, 0.0f, 0.0f);
@@ -117,6 +119,7 @@
                          toString(mCursorScrollAccumulator.haveRelativeHWheel()));
     dump += StringPrintf(INDENT3 "VWheelScale: %0.3f\n", mVWheelScale);
     dump += StringPrintf(INDENT3 "HWheelScale: %0.3f\n", mHWheelScale);
+    dump += StringPrintf(INDENT3 "DisplayId: %s\n", toString(mDisplayId).c_str());
     dump += StringPrintf(INDENT3 "Orientation: %d\n", mOrientation);
     dump += StringPrintf(INDENT3 "ButtonState: 0x%08x\n", mButtonState);
     dump += StringPrintf(INDENT3 "Down: %s\n", toString(isPointerDown(mButtonState)));
@@ -135,12 +138,12 @@
 
         // Configure device mode.
         switch (mParameters.mode) {
-            case Parameters::MODE_POINTER_RELATIVE:
+            case Parameters::Mode::POINTER_RELATIVE:
                 // Should not happen during first time configuration.
                 ALOGE("Cannot start a device in MODE_POINTER_RELATIVE, starting in MODE_POINTER");
-                mParameters.mode = Parameters::MODE_POINTER;
+                mParameters.mode = Parameters::Mode::POINTER;
                 [[fallthrough]];
-            case Parameters::MODE_POINTER:
+            case Parameters::Mode::POINTER:
                 mSource = AINPUT_SOURCE_MOUSE;
                 mXPrecision = 1.0f;
                 mYPrecision = 1.0f;
@@ -148,7 +151,7 @@
                 mYScale = 1.0f;
                 mPointerController = getContext()->getPointerController(getDeviceId());
                 break;
-            case Parameters::MODE_NAVIGATION:
+            case Parameters::Mode::NAVIGATION:
                 mSource = AINPUT_SOURCE_TRACKBALL;
                 mXPrecision = TRACKBALL_MOVEMENT_THRESHOLD;
                 mYPrecision = TRACKBALL_MOVEMENT_THRESHOLD;
@@ -161,12 +164,13 @@
         mHWheelScale = 1.0f;
     }
 
-    const bool configurePointerCapture = (!changes && config->pointerCaptureRequest.enable) ||
-            (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    const bool configurePointerCapture = mParameters.mode != Parameters::Mode::NAVIGATION &&
+            ((!changes && config->pointerCaptureRequest.enable) ||
+             (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE));
     if (configurePointerCapture) {
         if (config->pointerCaptureRequest.enable) {
-            if (mParameters.mode == Parameters::MODE_POINTER) {
-                mParameters.mode = Parameters::MODE_POINTER_RELATIVE;
+            if (mParameters.mode == Parameters::Mode::POINTER) {
+                mParameters.mode = Parameters::Mode::POINTER_RELATIVE;
                 mSource = AINPUT_SOURCE_MOUSE_RELATIVE;
                 // Keep PointerController around in order to preserve the pointer position.
                 mPointerController->fade(PointerControllerInterface::Transition::IMMEDIATE);
@@ -174,8 +178,8 @@
                 ALOGE("Cannot request pointer capture, device is not in MODE_POINTER");
             }
         } else {
-            if (mParameters.mode == Parameters::MODE_POINTER_RELATIVE) {
-                mParameters.mode = Parameters::MODE_POINTER;
+            if (mParameters.mode == Parameters::Mode::POINTER_RELATIVE) {
+                mParameters.mode = Parameters::Mode::POINTER;
                 mSource = AINPUT_SOURCE_MOUSE;
             } else {
                 ALOGE("Cannot release pointer capture, device is not in MODE_POINTER_RELATIVE");
@@ -190,8 +194,8 @@
 
     if (!changes || (changes & InputReaderConfiguration::CHANGE_POINTER_SPEED) ||
         configurePointerCapture) {
-        if (config->pointerCaptureRequest.enable) {
-            // Disable any acceleration or scaling when Pointer Capture is enabled.
+        if (mParameters.mode == Parameters::Mode::POINTER_RELATIVE) {
+            // Disable any acceleration or scaling for the pointer when Pointer Capture is enabled.
             mPointerVelocityControl.setParameters(FLAT_VELOCITY_CONTROL_PARAMS);
             mWheelXVelocityControl.setParameters(FLAT_VELOCITY_CONTROL_PARAMS);
             mWheelYVelocityControl.setParameters(FLAT_VELOCITY_CONTROL_PARAMS);
@@ -202,21 +206,36 @@
         }
     }
 
-    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
+    if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO) ||
+        configurePointerCapture) {
+        const bool isPointer = mParameters.mode == Parameters::Mode::POINTER;
+
+        mDisplayId = ADISPLAY_ID_NONE;
+        if (auto viewport = mDeviceContext.getAssociatedViewport(); viewport) {
+            // This InputDevice is associated with a viewport.
+            // Only generate events for the associated display.
+            const bool mismatchedPointerDisplay =
+                    isPointer && (viewport->displayId != mPointerController->getDisplayId());
+            mDisplayId = mismatchedPointerDisplay ? std::nullopt
+                                                  : std::make_optional(viewport->displayId);
+        } else if (isPointer) {
+            // The InputDevice is not associated with a viewport, but it controls the mouse pointer.
+            mDisplayId = mPointerController->getDisplayId();
+        }
+
         mOrientation = DISPLAY_ORIENTATION_0;
         const bool isOrientedDevice =
                 (mParameters.orientationAware && mParameters.hasAssociatedDisplay);
-
         // InputReader works in the un-rotated display coordinate space, so we don't need to do
         // anything if the device is already orientation-aware. If the device is not
         // orientation-aware, then we need to apply the inverse rotation of the display so that
         // when the display rotation is applied later as a part of the per-window transform, we
-        // get the expected screen coordinates.
-        if (!isOrientedDevice) {
-            std::optional<DisplayViewport> internalViewport =
-                    config->getDisplayViewportByType(ViewportType::INTERNAL);
-            if (internalViewport) {
-                mOrientation = getInverseRotation(internalViewport->orientation);
+        // get the expected screen coordinates. When pointer capture is enabled, we do not apply any
+        // rotations and report values directly from the input device.
+        if (!isOrientedDevice && mDisplayId &&
+            mParameters.mode != Parameters::Mode::POINTER_RELATIVE) {
+            if (auto viewport = config->getDisplayViewportById(*mDisplayId); viewport) {
+                mOrientation = getInverseRotation(viewport->orientation);
             }
         }
 
@@ -225,12 +244,12 @@
 }
 
 void CursorInputMapper::configureParameters() {
-    mParameters.mode = Parameters::MODE_POINTER;
+    mParameters.mode = Parameters::Mode::POINTER;
     String8 cursorModeString;
     if (getDeviceContext().getConfiguration().tryGetProperty(String8("cursor.mode"),
                                                              cursorModeString)) {
         if (cursorModeString == "navigation") {
-            mParameters.mode = Parameters::MODE_NAVIGATION;
+            mParameters.mode = Parameters::Mode::NAVIGATION;
         } else if (cursorModeString != "pointer" && cursorModeString != "default") {
             ALOGW("Invalid value for cursor.mode: '%s'", cursorModeString.string());
         }
@@ -241,7 +260,7 @@
                                                          mParameters.orientationAware);
 
     mParameters.hasAssociatedDisplay = false;
-    if (mParameters.mode == Parameters::MODE_POINTER || mParameters.orientationAware) {
+    if (mParameters.mode == Parameters::Mode::POINTER || mParameters.orientationAware) {
         mParameters.hasAssociatedDisplay = true;
     }
 }
@@ -250,21 +269,7 @@
     dump += INDENT3 "Parameters:\n";
     dump += StringPrintf(INDENT4 "HasAssociatedDisplay: %s\n",
                          toString(mParameters.hasAssociatedDisplay));
-
-    switch (mParameters.mode) {
-        case Parameters::MODE_POINTER:
-            dump += INDENT4 "Mode: pointer\n";
-            break;
-        case Parameters::MODE_POINTER_RELATIVE:
-            dump += INDENT4 "Mode: relative pointer\n";
-            break;
-        case Parameters::MODE_NAVIGATION:
-            dump += INDENT4 "Mode: navigation\n";
-            break;
-        default:
-            ALOG_ASSERT(false);
-    }
-
+    dump += StringPrintf(INDENT4 "Mode: %s\n", ftl::enum_string(mParameters.mode).c_str());
     dump += StringPrintf(INDENT4 "OrientationAware: %s\n", toString(mParameters.orientationAware));
 }
 
@@ -294,6 +299,11 @@
 }
 
 void CursorInputMapper::sync(nsecs_t when, nsecs_t readTime) {
+    if (!mDisplayId) {
+        // Ignore events when there is no target display configured.
+        return;
+    }
+
     int32_t lastButtonState = mButtonState;
     int32_t currentButtonState = mCursorButtonAccumulator.getButtonState();
     mButtonState = currentButtonState;
@@ -339,7 +349,6 @@
 
     mPointerVelocityControl.move(when, &deltaX, &deltaY);
 
-    int32_t displayId = ADISPLAY_ID_NONE;
     float xCursorPosition = AMOTION_EVENT_INVALID_CURSOR_POSITION;
     float yCursorPosition = AMOTION_EVENT_INVALID_CURSOR_POSITION;
     if (mSource == AINPUT_SOURCE_MOUSE) {
@@ -363,7 +372,6 @@
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, yCursorPosition);
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X, deltaX);
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y, deltaY);
-        displayId = mPointerController->getDisplayId();
     } else {
         // Pointer capture and navigation modes
         pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_X, deltaX);
@@ -385,7 +393,7 @@
 
     // Synthesize key down from buttons if needed.
     synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_DOWN, when, readTime, getDeviceId(),
-                         mSource, displayId, policyFlags, lastButtonState, currentButtonState);
+                         mSource, *mDisplayId, policyFlags, lastButtonState, currentButtonState);
 
     // Send motion event.
     if (downChanged || moved || scrolled || buttonsChanged) {
@@ -406,7 +414,7 @@
                 int32_t actionButton = BitSet32::valueForBit(released.clearFirstMarkedBit());
                 buttonState &= ~actionButton;
                 NotifyMotionArgs releaseArgs(getContext()->getNextId(), when, readTime,
-                                             getDeviceId(), mSource, displayId, policyFlags,
+                                             getDeviceId(), mSource, *mDisplayId, policyFlags,
                                              AMOTION_EVENT_ACTION_BUTTON_RELEASE, actionButton, 0,
                                              metaState, buttonState, MotionClassification::NONE,
                                              AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
@@ -418,7 +426,7 @@
         }
 
         NotifyMotionArgs args(getContext()->getNextId(), when, readTime, getDeviceId(), mSource,
-                              displayId, policyFlags, motionEventAction, 0, 0, metaState,
+                              *mDisplayId, policyFlags, motionEventAction, 0, 0, metaState,
                               currentButtonState, MotionClassification::NONE,
                               AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties, &pointerCoords,
                               mXPrecision, mYPrecision, xCursorPosition, yCursorPosition, downTime,
@@ -431,7 +439,7 @@
                 int32_t actionButton = BitSet32::valueForBit(pressed.clearFirstMarkedBit());
                 buttonState |= actionButton;
                 NotifyMotionArgs pressArgs(getContext()->getNextId(), when, readTime, getDeviceId(),
-                                           mSource, displayId, policyFlags,
+                                           mSource, *mDisplayId, policyFlags,
                                            AMOTION_EVENT_ACTION_BUTTON_PRESS, actionButton, 0,
                                            metaState, buttonState, MotionClassification::NONE,
                                            AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
@@ -447,7 +455,7 @@
         // Send hover move after UP to tell the application that the mouse is hovering now.
         if (motionEventAction == AMOTION_EVENT_ACTION_UP && (mSource == AINPUT_SOURCE_MOUSE)) {
             NotifyMotionArgs hoverArgs(getContext()->getNextId(), when, readTime, getDeviceId(),
-                                       mSource, displayId, policyFlags,
+                                       mSource, *mDisplayId, policyFlags,
                                        AMOTION_EVENT_ACTION_HOVER_MOVE, 0, 0, metaState,
                                        currentButtonState, MotionClassification::NONE,
                                        AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
@@ -462,7 +470,7 @@
             pointerCoords.setAxisValue(AMOTION_EVENT_AXIS_HSCROLL, hscroll);
 
             NotifyMotionArgs scrollArgs(getContext()->getNextId(), when, readTime, getDeviceId(),
-                                        mSource, displayId, policyFlags,
+                                        mSource, *mDisplayId, policyFlags,
                                         AMOTION_EVENT_ACTION_SCROLL, 0, 0, metaState,
                                         currentButtonState, MotionClassification::NONE,
                                         AMOTION_EVENT_EDGE_FLAG_NONE, 1, &pointerProperties,
@@ -474,7 +482,7 @@
 
     // Synthesize key up from buttons if needed.
     synthesizeButtonKeys(getContext(), AKEY_EVENT_ACTION_UP, when, readTime, getDeviceId(), mSource,
-                         displayId, policyFlags, lastButtonState, currentButtonState);
+                         *mDisplayId, policyFlags, lastButtonState, currentButtonState);
 
     mCursorMotionAccumulator.finishSync();
     mCursorScrollAccumulator.finishSync();
@@ -489,16 +497,7 @@
 }
 
 std::optional<int32_t> CursorInputMapper::getAssociatedDisplayId() {
-    if (mParameters.hasAssociatedDisplay) {
-        if (mParameters.mode == Parameters::MODE_POINTER) {
-            return std::make_optional(mPointerController->getDisplayId());
-        } else {
-            // If the device is orientationAware and not a mouse,
-            // it expects to dispatch events to any display
-            return std::make_optional(ADISPLAY_ID_NONE);
-        }
-    }
-    return std::nullopt;
+    return mDisplayId;
 }
 
 } // namespace android
diff --git a/services/inputflinger/reader/mapper/CursorInputMapper.h b/services/inputflinger/reader/mapper/CursorInputMapper.h
index c84c6c4..60b3dd9 100644
--- a/services/inputflinger/reader/mapper/CursorInputMapper.h
+++ b/services/inputflinger/reader/mapper/CursorInputMapper.h
@@ -74,10 +74,17 @@
 
     // Immutable configuration parameters.
     struct Parameters {
-        enum Mode {
-            MODE_POINTER,
-            MODE_POINTER_RELATIVE,
-            MODE_NAVIGATION,
+        enum class Mode {
+            // In POINTER mode, the device is a mouse that controls the mouse cursor on the screen,
+            // reporting absolute screen locations using SOURCE_MOUSE.
+            POINTER,
+            // A mouse device in POINTER mode switches to the POINTER_RELATIVE mode when Pointer
+            // Capture is enabled, and reports relative values only using SOURCE_MOUSE_RELATIVE.
+            POINTER_RELATIVE,
+            // A device in NAVIGATION mode emits relative values using SOURCE_TRACKBALL.
+            NAVIGATION,
+
+            ftl_last = NAVIGATION,
         };
 
         Mode mode;
@@ -104,6 +111,10 @@
     VelocityControl mWheelXVelocityControl;
     VelocityControl mWheelYVelocityControl;
 
+    // The display that events generated by this mapper should target. This can be set to
+    // ADISPLAY_ID_NONE to target the focused display. If there is no display target (i.e.
+    // std::nullopt), all events will be ignored.
+    std::optional<int32_t> mDisplayId;
     int32_t mOrientation;
 
     std::shared_ptr<PointerControllerInterface> mPointerController;
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index 00fc288..2ddacef 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -44,6 +44,8 @@
 
 // --- Static Definitions ---
 
+static const DisplayViewport kUninitializedViewport;
+
 template <typename T>
 inline static void swap(T& a, T& b) {
     T temp = a;
@@ -390,10 +392,10 @@
     }
 
     if (changes && resetNeeded) {
-        // If device was reset, cancel touch event and update touch spot state.
-        cancelTouch(mCurrentRawState.when, mCurrentRawState.readTime);
-        mCurrentCookedState.clear();
-        updateTouchSpots();
+        // If the device needs to be reset, cancel any ongoing gestures and reset the state.
+        cancelTouch(when, when);
+        reset(when);
+
         // Send reset, unless this is the first time the device has been configured,
         // in which case the reader will call reset itself after all mappers are ready.
         NotifyDeviceResetArgs args(getContext()->getNextId(), when, getDeviceId());
@@ -881,7 +883,7 @@
 }
 
 void TouchInputMapper::configureInputDevice(nsecs_t when, bool* outResetNeeded) {
-    DeviceMode oldDeviceMode = mDeviceMode;
+    const DeviceMode oldDeviceMode = mDeviceMode;
 
     resolveExternalStylusPresence();
 
@@ -910,43 +912,37 @@
         mDeviceMode = DeviceMode::UNSCALED;
     }
 
-    // Ensure we have valid X and Y axes.
+    const std::optional<DisplayViewport> newViewportOpt = findViewport();
+
+    // Ensure the device is valid and can be used.
     if (!mRawPointerAxes.x.valid || !mRawPointerAxes.y.valid) {
         ALOGW("Touch device '%s' did not report support for X or Y axis!  "
               "The device will be inoperable.",
               getDeviceName().c_str());
         mDeviceMode = DeviceMode::DISABLED;
-        return;
-    }
-
-    // Get associated display dimensions.
-    std::optional<DisplayViewport> newViewport = findViewport();
-    if (!newViewport) {
+    } else if (!newViewportOpt) {
         ALOGI("Touch device '%s' could not query the properties of its associated "
               "display.  The device will be inoperable until the display size "
               "becomes available.",
               getDeviceName().c_str());
         mDeviceMode = DeviceMode::DISABLED;
-        return;
-    }
-
-    if (!newViewport->isActive) {
+    } else if (!newViewportOpt->isActive) {
         ALOGI("Disabling %s (device %i) because the associated viewport is not active",
               getDeviceName().c_str(), getDeviceId());
         mDeviceMode = DeviceMode::DISABLED;
-        return;
     }
 
     // Raw width and height in the natural orientation.
     const int32_t rawWidth = mRawPointerAxes.getRawWidth();
     const int32_t rawHeight = mRawPointerAxes.getRawHeight();
 
-    const bool viewportChanged = mViewport != *newViewport;
+    const DisplayViewport& newViewport = newViewportOpt.value_or(kUninitializedViewport);
+    const bool viewportChanged = mViewport != newViewport;
     bool skipViewportUpdate = false;
     if (viewportChanged) {
-        const bool viewportOrientationChanged = mViewport.orientation != newViewport->orientation;
-        const bool viewportDisplayIdChanged = mViewport.displayId != newViewport->displayId;
-        mViewport = *newViewport;
+        const bool viewportOrientationChanged = mViewport.orientation != newViewport.orientation;
+        const bool viewportDisplayIdChanged = mViewport.displayId != newViewport.displayId;
+        mViewport = newViewport;
 
         if (mDeviceMode == DeviceMode::DIRECT || mDeviceMode == DeviceMode::POINTER) {
             // Convert rotated viewport to the natural orientation.
@@ -1105,10 +1101,6 @@
             // of the diagonal axis of the touch pad.  Touches that are wider than this are
             // translated into freeform gestures.
             mPointerGestureMaxSwipeWidth = mConfig.pointerGestureSwipeMaxWidthRatio * rawDiagonal;
-
-            // Abort current pointer usages because the state has changed.
-            const nsecs_t readTime = when; // synthetic event
-            abortPointerUsage(when, readTime, 0 /*policyFlags*/);
         }
 
         // Inform the dispatcher about the changes.
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index 76a7c19..75cd9da 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -60,6 +60,7 @@
     },
     static_libs: [
         "libc++fs",
+        "libgmock",
     ],
     require_root: true,
     test_suites: ["device-tests"],
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index df43071..4977c39 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -2131,6 +2131,59 @@
                          ADISPLAY_ID_DEFAULT, 0 /* expectedFlag */);
 }
 
+TEST_F(InputDispatcherTest, HoverEnterMoveRemoveWindowsInSecondDisplay) {
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> windowDefaultDisplay =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "DefaultDisplay",
+                                       ADISPLAY_ID_DEFAULT);
+    windowDefaultDisplay->setFrame(Rect(0, 0, 600, 800));
+    sp<FakeWindowHandle> windowSecondDisplay =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "SecondDisplay",
+                                       SECOND_DISPLAY_ID);
+    windowSecondDisplay->setFrame(Rect(0, 0, 600, 800));
+
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {windowDefaultDisplay}},
+                                  {SECOND_DISPLAY_ID, {windowSecondDisplay}}});
+
+    // Set cursor position in window in default display and check that hover enter and move
+    // events are generated.
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(mDispatcher,
+                                MotionEventBuilder(AMOTION_EVENT_ACTION_HOVER_MOVE,
+                                                   AINPUT_SOURCE_MOUSE)
+                                        .displayId(ADISPLAY_ID_DEFAULT)
+                                        .pointer(PointerBuilder(0, AMOTION_EVENT_TOOL_TYPE_MOUSE)
+                                                         .x(300)
+                                                         .y(600))
+                                        .build()));
+    windowDefaultDisplay->consumeEvent(AINPUT_EVENT_TYPE_MOTION, AMOTION_EVENT_ACTION_HOVER_ENTER,
+                                       ADISPLAY_ID_DEFAULT, 0 /* expectedFlag */);
+    windowDefaultDisplay->consumeEvent(AINPUT_EVENT_TYPE_MOTION, AMOTION_EVENT_ACTION_HOVER_MOVE,
+                                       ADISPLAY_ID_DEFAULT, 0 /* expectedFlag */);
+
+    // Remove all windows in secondary display and check that no event happens on window in
+    // primary display.
+    mDispatcher->setInputWindows({{SECOND_DISPLAY_ID, {}}});
+    windowDefaultDisplay->assertNoEvents();
+
+    // Move cursor position in window in default display and check that only hover move
+    // event is generated and not hover enter event.
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {windowDefaultDisplay}},
+                                  {SECOND_DISPLAY_ID, {windowSecondDisplay}}});
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(mDispatcher,
+                                MotionEventBuilder(AMOTION_EVENT_ACTION_HOVER_MOVE,
+                                                   AINPUT_SOURCE_MOUSE)
+                                        .displayId(ADISPLAY_ID_DEFAULT)
+                                        .pointer(PointerBuilder(0, AMOTION_EVENT_TOOL_TYPE_MOUSE)
+                                                         .x(400)
+                                                         .y(700))
+                                        .build()));
+    windowDefaultDisplay->consumeEvent(AINPUT_EVENT_TYPE_MOTION, AMOTION_EVENT_ACTION_HOVER_MOVE,
+                                       ADISPLAY_ID_DEFAULT, 0 /* expectedFlag */);
+    windowDefaultDisplay->assertNoEvents();
+}
+
 TEST_F(InputDispatcherTest, DispatchMouseEventsUnderCursor) {
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
 
@@ -2293,6 +2346,35 @@
     thirdWindow->consumeMotionDown();
 }
 
+TEST_F(InputDispatcherTest, OnWindowInfosChanged_RemoveAllWindowsOnDisplay) {
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            new FakeWindowHandle(application, mDispatcher, "Fake Window", ADISPLAY_ID_DEFAULT);
+    window->setFocusable(true);
+
+    mDispatcher->onWindowInfosChanged({*window->getInfo()}, {});
+    setFocusedWindow(window);
+
+    window->consumeFocusEvent(true);
+
+    NotifyKeyArgs keyDown = generateKeyArgs(AKEY_EVENT_ACTION_DOWN, ADISPLAY_ID_DEFAULT);
+    NotifyKeyArgs keyUp = generateKeyArgs(AKEY_EVENT_ACTION_UP, ADISPLAY_ID_DEFAULT);
+    mDispatcher->notifyKey(&keyDown);
+    mDispatcher->notifyKey(&keyUp);
+
+    window->consumeKeyDown(ADISPLAY_ID_DEFAULT);
+    window->consumeKeyUp(ADISPLAY_ID_DEFAULT);
+
+    // All windows are removed from the display. Ensure that we can no longer dispatch to it.
+    mDispatcher->onWindowInfosChanged({}, {});
+
+    window->consumeFocusEvent(false);
+
+    mDispatcher->notifyKey(&keyDown);
+    mDispatcher->notifyKey(&keyUp);
+    window->assertNoEvents();
+}
+
 /**
  * Ensure the correct coordinate spaces are used by InputDispatcher.
  *
@@ -6096,6 +6178,8 @@
     sp<FakeWindowHandle> mWindow;
     sp<FakeWindowHandle> mSecondWindow;
     sp<FakeWindowHandle> mDragWindow;
+    // Mouse would force no-split, set the id as non-zero to verify if drag state could track it.
+    static constexpr int32_t MOUSE_POINTER_ID = 1;
 
     void SetUp() override {
         InputDispatcherTest::SetUp();
@@ -6110,11 +6194,41 @@
         mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {mWindow, mSecondWindow}}});
     }
 
-    void injectDown() {
-        ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
-                  injectMotionDown(mDispatcher, AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
-                                   {50, 50}))
-                << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
+    void injectDown(int fromSource = AINPUT_SOURCE_TOUCHSCREEN) {
+        switch (fromSource) {
+            case AINPUT_SOURCE_TOUCHSCREEN:
+                ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+                          injectMotionDown(mDispatcher, AINPUT_SOURCE_TOUCHSCREEN,
+                                           ADISPLAY_ID_DEFAULT, {50, 50}))
+                        << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
+                break;
+            case AINPUT_SOURCE_STYLUS:
+                ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+                          injectMotionEvent(
+                                  mDispatcher,
+                                  MotionEventBuilder(AMOTION_EVENT_ACTION_DOWN,
+                                                     AINPUT_SOURCE_STYLUS)
+                                          .buttonState(AMOTION_EVENT_BUTTON_STYLUS_PRIMARY)
+                                          .pointer(PointerBuilder(0, AMOTION_EVENT_TOOL_TYPE_STYLUS)
+                                                           .x(50)
+                                                           .y(50))
+                                          .build()));
+                break;
+            case AINPUT_SOURCE_MOUSE:
+                ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+                          injectMotionEvent(
+                                  mDispatcher,
+                                  MotionEventBuilder(AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_MOUSE)
+                                          .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                          .pointer(PointerBuilder(MOUSE_POINTER_ID,
+                                                                  AMOTION_EVENT_TOOL_TYPE_MOUSE)
+                                                           .x(50)
+                                                           .y(50))
+                                          .build()));
+                break;
+            default:
+                FAIL() << "Source " << fromSource << " doesn't support drag and drop";
+        }
 
         // Window should receive motion event.
         mWindow->consumeMotionDown(ADISPLAY_ID_DEFAULT);
@@ -6123,9 +6237,9 @@
     // Start performing drag, we will create a drag window and transfer touch to it.
     // @param sendDown : if true, send a motion down on first window before perform drag and drop.
     // Returns true on success.
-    bool performDrag(bool sendDown = true) {
+    bool startDrag(bool sendDown = true, int fromSource = AINPUT_SOURCE_TOUCHSCREEN) {
         if (sendDown) {
-            injectDown();
+            injectDown(fromSource);
         }
 
         // The drag window covers the entire display
@@ -6143,36 +6257,10 @@
         }
         return transferred;
     }
-
-    // Start performing drag, we will create a drag window and transfer touch to it.
-    void performStylusDrag() {
-        ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
-                  injectMotionEvent(mDispatcher,
-                                    MotionEventBuilder(AMOTION_EVENT_ACTION_DOWN,
-                                                       AINPUT_SOURCE_STYLUS)
-                                            .buttonState(AMOTION_EVENT_BUTTON_STYLUS_PRIMARY)
-                                            .pointer(PointerBuilder(0,
-                                                                    AMOTION_EVENT_TOOL_TYPE_STYLUS)
-                                                             .x(50)
-                                                             .y(50))
-                                            .build()));
-        mWindow->consumeMotionDown(ADISPLAY_ID_DEFAULT);
-
-        // The drag window covers the entire display
-        mDragWindow = new FakeWindowHandle(mApp, mDispatcher, "DragWindow", ADISPLAY_ID_DEFAULT);
-        mDispatcher->setInputWindows(
-                {{ADISPLAY_ID_DEFAULT, {mDragWindow, mWindow, mSecondWindow}}});
-
-        // Transfer touch focus to the drag window
-        mDispatcher->transferTouchFocus(mWindow->getToken(), mDragWindow->getToken(),
-                                        true /* isDragDrop */);
-        mWindow->consumeMotionCancel();
-        mDragWindow->consumeMotionDown();
-    }
 };
 
 TEST_F(InputDispatcherDragTests, DragEnterAndDragExit) {
-    performDrag();
+    startDrag();
 
     // Move on window.
     ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
@@ -6210,7 +6298,7 @@
 }
 
 TEST_F(InputDispatcherDragTests, DragAndDrop) {
-    performDrag();
+    startDrag();
 
     // Move on window.
     ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
@@ -6242,7 +6330,7 @@
 }
 
 TEST_F(InputDispatcherDragTests, StylusDragAndDrop) {
-    performStylusDrag();
+    startDrag(true, AINPUT_SOURCE_STYLUS);
 
     // Move on window and keep button pressed.
     ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
@@ -6289,7 +6377,7 @@
 }
 
 TEST_F(InputDispatcherDragTests, DragAndDropOnInvalidWindow) {
-    performDrag();
+    startDrag();
 
     // Set second window invisible.
     mSecondWindow->setVisible(false);
@@ -6325,6 +6413,9 @@
 }
 
 TEST_F(InputDispatcherDragTests, NoDragAndDropWhenMultiFingers) {
+    // Ensure window could track pointerIds if it didn't support split touch.
+    mWindow->setPreventSplitting(true);
+
     ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
               injectMotionDown(mDispatcher, AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT,
                                {50, 50}))
@@ -6345,7 +6436,7 @@
     mWindow->consumeMotionPointerDown(1 /* pointerIndex */);
 
     // Should not perform drag and drop when window has multi fingers.
-    ASSERT_FALSE(performDrag(false));
+    ASSERT_FALSE(startDrag(false));
 }
 
 TEST_F(InputDispatcherDragTests, DragAndDropWhenSplitTouch) {
@@ -6373,7 +6464,7 @@
     mWindow->consumeMotionDown(ADISPLAY_ID_DEFAULT);
 
     // Perform drag and drop from first window.
-    ASSERT_TRUE(performDrag(false));
+    ASSERT_TRUE(startDrag(false));
 
     // Move on window.
     const MotionEvent secondFingerMoveEvent =
@@ -6408,7 +6499,7 @@
 }
 
 TEST_F(InputDispatcherDragTests, DragAndDropWhenMultiDisplays) {
-    performDrag();
+    startDrag();
 
     // Update window of second display.
     sp<FakeWindowHandle> windowInSecondary =
@@ -6459,6 +6550,55 @@
     mSecondWindow->assertNoEvents();
 }
 
+TEST_F(InputDispatcherDragTests, MouseDragAndDrop) {
+    startDrag(true, AINPUT_SOURCE_MOUSE);
+    // Move on window.
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(mDispatcher,
+                                MotionEventBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_MOUSE)
+                                        .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                        .pointer(PointerBuilder(MOUSE_POINTER_ID,
+                                                                AMOTION_EVENT_TOOL_TYPE_MOUSE)
+                                                         .x(50)
+                                                         .y(50))
+                                        .build()))
+            << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
+    mDragWindow->consumeMotionMove(ADISPLAY_ID_DEFAULT);
+    mWindow->consumeDragEvent(false, 50, 50);
+    mSecondWindow->assertNoEvents();
+
+    // Move to another window.
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(mDispatcher,
+                                MotionEventBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_MOUSE)
+                                        .buttonState(AMOTION_EVENT_BUTTON_PRIMARY)
+                                        .pointer(PointerBuilder(MOUSE_POINTER_ID,
+                                                                AMOTION_EVENT_TOOL_TYPE_MOUSE)
+                                                         .x(150)
+                                                         .y(50))
+                                        .build()))
+            << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
+    mDragWindow->consumeMotionMove(ADISPLAY_ID_DEFAULT);
+    mWindow->consumeDragEvent(true, 150, 50);
+    mSecondWindow->consumeDragEvent(false, 50, 50);
+
+    // drop to another window.
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(mDispatcher,
+                                MotionEventBuilder(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_MOUSE)
+                                        .buttonState(0)
+                                        .pointer(PointerBuilder(MOUSE_POINTER_ID,
+                                                                AMOTION_EVENT_TOOL_TYPE_MOUSE)
+                                                         .x(150)
+                                                         .y(50))
+                                        .build()))
+            << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
+    mDragWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT);
+    mFakePolicy->assertDropTargetEquals(mSecondWindow->getToken());
+    mWindow->assertNoEvents();
+    mSecondWindow->assertNoEvents();
+}
+
 class InputDispatcherDropInputFeatureTest : public InputDispatcherTest {};
 
 TEST_F(InputDispatcherDropInputFeatureTest, WindowDropsInput) {
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index db46699..3afa52c 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -56,7 +56,9 @@
 
 // Arbitrary display properties.
 static constexpr int32_t DISPLAY_ID = 0;
+static const std::string DISPLAY_UNIQUE_ID = "local:1";
 static constexpr int32_t SECONDARY_DISPLAY_ID = DISPLAY_ID + 1;
+static const std::string SECONDARY_DISPLAY_UNIQUE_ID = "local:2";
 static constexpr int32_t DISPLAY_WIDTH = 480;
 static constexpr int32_t DISPLAY_HEIGHT = 800;
 static constexpr int32_t VIRTUAL_DISPLAY_ID = 1;
@@ -91,6 +93,24 @@
 // Error tolerance for floating point assertions.
 static const float EPSILON = 0.001f;
 
+using ::testing::AllOf;
+
+MATCHER_P(WithAction, action, "InputEvent with specified action") {
+    return arg.action == action;
+}
+
+MATCHER_P(WithSource, source, "InputEvent with specified source") {
+    return arg.source == source;
+}
+
+MATCHER_P(WithDisplayId, displayId, "InputEvent with specified displayId") {
+    return arg.displayId == displayId;
+}
+
+MATCHER_P2(WithCoords, x, y, "MotionEvent with specified action") {
+    return arg.pointerCoords[0].getX() == x && arg.pointerCoords[0].getY();
+}
+
 template<typename T>
 static inline T min(T a, T b) {
     return a < b ? a : b;
@@ -2877,7 +2897,6 @@
 
     // Device should be disabled because it is associated with a specific display, but the
     // corresponding display is not found.
-    const std::string DISPLAY_UNIQUE_ID = "displayUniqueId";
     mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
                        InputReaderConfiguration::CHANGE_DISPLAY_INFO);
@@ -2908,7 +2927,6 @@
     mDevice->addMapper<FakeInputMapper>(EVENTHUB_ID, AINPUT_SOURCE_KEYBOARD);
     mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
 
-    const std::string DISPLAY_UNIQUE_ID = "displayUniqueId";
     mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     mFakePolicy->addDisplayViewport(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
                                     DISPLAY_ORIENTATION_0, /* isActive= */ true, DISPLAY_UNIQUE_ID,
@@ -2918,6 +2936,21 @@
     ASSERT_EQ(DISPLAY_UNIQUE_ID, mDevice->getAssociatedDisplayUniqueId());
 }
 
+/**
+ * This test reproduces a crash caused by a dangling reference that remains after device is added
+ * and removed. The reference is accessed in InputDevice::dump(..);
+ */
+TEST_F(InputDeviceTest, DumpDoesNotCrash) {
+    constexpr int32_t TEST_EVENTHUB_ID = 10;
+    mFakeEventHub->addDevice(TEST_EVENTHUB_ID, "Test EventHub device", InputDeviceClass::BATTERY);
+
+    InputDevice device(mReader->getContext(), 1 /*id*/, 2 /*generation*/, {} /*identifier*/);
+    device.addEventHubDevice(TEST_EVENTHUB_ID, true /*populateMappers*/);
+    device.removeEventHubDevice(TEST_EVENTHUB_ID);
+    std::string dumpStr, eventHubDevStr;
+    device.dump(dumpStr, eventHubDevStr);
+}
+
 // --- InputMapperTest ---
 
 class InputMapperTest : public testing::Test {
@@ -2943,6 +2976,8 @@
         mReader = std::make_unique<InstrumentedInputReader>(mFakeEventHub, mFakePolicy,
                                                             *mFakeListener);
         mDevice = newDevice(DEVICE_ID, DEVICE_NAME, DEVICE_LOCATION, EVENTHUB_ID, classes);
+        // Consume the device reset notification generated when adding a new device.
+        mFakeListener->assertNotifyDeviceResetWasCalled();
     }
 
     void SetUp() override {
@@ -2967,6 +3002,8 @@
             mReader->loopOnce();
         }
         mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), changes);
+        // Loop the reader to flush the input listener queue.
+        mReader->loopOnce();
     }
 
     std::shared_ptr<InputDevice> newDevice(int32_t deviceId, const std::string& name,
@@ -2990,6 +3027,8 @@
         configureDevice(0);
         mDevice->reset(ARBITRARY_TIME);
         mapper.reset(ARBITRARY_TIME);
+        // Loop the reader to flush the input listener queue.
+        mReader->loopOnce();
         return mapper;
     }
 
@@ -3015,6 +3054,7 @@
         event.code = code;
         event.value = value;
         mapper.process(&event);
+        // Loop the reader to flush the input listener queue.
         mReader->loopOnce();
     }
 
@@ -4186,10 +4226,14 @@
                             int32_t rotatedX, int32_t rotatedY);
 
     void prepareDisplay(int32_t orientation) {
-        const std::string uniqueId = "local:0";
-        const ViewportType viewportType = ViewportType::INTERNAL;
-        setDisplayInfoAndReconfigure(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
-                orientation, uniqueId, NO_PORT, viewportType);
+        setDisplayInfoAndReconfigure(DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT, orientation,
+                                     DISPLAY_UNIQUE_ID, NO_PORT, ViewportType::INTERNAL);
+    }
+
+    void prepareSecondaryDisplay() {
+        setDisplayInfoAndReconfigure(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+                                     DISPLAY_ORIENTATION_0, SECONDARY_DISPLAY_UNIQUE_ID, NO_PORT,
+                                     ViewportType::EXTERNAL);
     }
 
     static void assertCursorPointerCoords(const PointerCoords& coords, float x, float y,
@@ -4466,6 +4510,7 @@
 }
 
 TEST_F(CursorInputMapperTest, Process_WhenOrientationAware_ShouldNotRotateMotions) {
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     addConfigurationProperty("cursor.mode", "navigation");
     // InputReader works in the un-rotated coordinate space, so orientation-aware devices do not
     // need to be rotated.
@@ -4484,11 +4529,13 @@
 }
 
 TEST_F(CursorInputMapperTest, Process_WhenNotOrientationAware_ShouldRotateMotions) {
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, DISPLAY_UNIQUE_ID);
     addConfigurationProperty("cursor.mode", "navigation");
     // Since InputReader works in the un-rotated coordinate space, only devices that are not
     // orientation-aware are affected by display rotation.
     CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
 
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_0);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  0,  1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1,  1,  1));
@@ -4499,6 +4546,7 @@
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  0, -1,  0));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  1, -1,  1));
 
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_90);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1, -1,  0));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1, -1,  1));
@@ -4509,6 +4557,7 @@
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  0,  0, -1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  1, -1, -1));
 
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_180);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  0, -1));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1, -1, -1));
@@ -4519,6 +4568,7 @@
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  0,  1,  0));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper, -1,  1,  1, -1));
 
+    clearViewports();
     prepareDisplay(DISPLAY_ORIENTATION_270);
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  0,  1,  1,  0));
     ASSERT_NO_FATAL_FAILURE(testMotionRotation(mapper,  1,  1,  1, -1));
@@ -4912,7 +4962,6 @@
     ASSERT_TRUE(mReader->getContext()->getGeneration() != generation);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
-    ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
     ASSERT_EQ(DEVICE_ID, resetArgs.deviceId);
 
     process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
@@ -4974,33 +5023,118 @@
     ASSERT_EQ(20, args.pointerCoords[0].getY());
 }
 
-TEST_F(CursorInputMapperTest, Process_ShouldHandleDisplayId) {
+TEST_F(CursorInputMapperTest, PointerCaptureDisablesOrientationChanges) {
+    addConfigurationProperty("cursor.mode", "pointer");
     CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
 
-    // Setup for second display.
-    constexpr int32_t SECOND_DISPLAY_ID = 1;
-    const std::string SECOND_DISPLAY_UNIQUE_ID = "local:1";
-    mFakePolicy->addDisplayViewport(SECOND_DISPLAY_ID, 800, 480, DISPLAY_ORIENTATION_0,
-                                    true /*isActive*/, SECOND_DISPLAY_UNIQUE_ID, NO_PORT,
-                                    ViewportType::EXTERNAL);
-    mFakePolicy->setDefaultPointerDisplayId(SECOND_DISPLAY_ID);
-    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    NotifyDeviceResetArgs resetArgs;
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled(&resetArgs));
+    ASSERT_EQ(ARBITRARY_TIME, resetArgs.eventTime);
+    ASSERT_EQ(DEVICE_ID, resetArgs.deviceId);
 
-    mFakePointerController->setBounds(0, 0, 800 - 1, 480 - 1);
-    mFakePointerController->setPosition(100, 200);
-    mFakePointerController->setButtonState(0);
+    // Ensure the display is rotated.
+    prepareDisplay(DISPLAY_ORIENTATION_90);
 
     NotifyMotionArgs args;
+
+    // Verify that the coordinates are rotated.
     process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
     process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
     process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
     ASSERT_EQ(AINPUT_SOURCE_MOUSE, args.source);
     ASSERT_EQ(AMOTION_EVENT_ACTION_HOVER_MOVE, args.action);
-    ASSERT_NO_FATAL_FAILURE(assertPointerCoords(args.pointerCoords[0],
-            110.0f, 220.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f));
+    ASSERT_EQ(-20, args.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_X));
+    ASSERT_EQ(10, args.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_RELATIVE_Y));
+
+    // Enable Pointer Capture.
+    mFakePolicy->setPointerCapture(true);
+    configureDevice(InputReaderConfiguration::CHANGE_POINTER_CAPTURE);
+    NotifyPointerCaptureChangedArgs captureArgs;
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyCaptureWasCalled(&captureArgs));
+    ASSERT_TRUE(captureArgs.request.enable);
+
+    // Move and verify rotation is not applied.
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
+    ASSERT_EQ(AINPUT_SOURCE_MOUSE_RELATIVE, args.source);
+    ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, args.action);
+    ASSERT_EQ(10, args.pointerCoords[0].getX());
+    ASSERT_EQ(20, args.pointerCoords[0].getY());
+}
+
+TEST_F(CursorInputMapperTest, ConfigureDisplayId_NoAssociatedViewport) {
+    CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
+
+    // Set up the default display.
+    prepareDisplay(DISPLAY_ORIENTATION_90);
+
+    // Set up the secondary display as the display on which the pointer should be shown.
+    // The InputDevice is not associated with any display.
+    prepareSecondaryDisplay();
+    mFakePolicy->setDefaultPointerDisplayId(SECONDARY_DISPLAY_ID);
+    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+
+    mFakePointerController->setBounds(0, 0, DISPLAY_WIDTH - 1, DISPLAY_HEIGHT - 1);
+    mFakePointerController->setPosition(100, 200);
+    mFakePointerController->setButtonState(0);
+
+    // Ensure input events are generated for the secondary display.
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(
+            AllOf(WithAction(AMOTION_EVENT_ACTION_HOVER_MOVE), WithSource(AINPUT_SOURCE_MOUSE),
+                  WithDisplayId(SECONDARY_DISPLAY_ID), WithCoords(110.0f, 220.0f))));
     ASSERT_NO_FATAL_FAILURE(assertPosition(*mFakePointerController, 110.0f, 220.0f));
-    ASSERT_EQ(SECOND_DISPLAY_ID, args.displayId);
+}
+
+TEST_F(CursorInputMapperTest, ConfigureDisplayId_WithAssociatedViewport) {
+    CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
+
+    // Set up the default display.
+    prepareDisplay(DISPLAY_ORIENTATION_90);
+
+    // Set up the secondary display as the display on which the pointer should be shown,
+    // and associate the InputDevice with the secondary display.
+    prepareSecondaryDisplay();
+    mFakePolicy->setDefaultPointerDisplayId(SECONDARY_DISPLAY_ID);
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, SECONDARY_DISPLAY_UNIQUE_ID);
+    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+
+    mFakePointerController->setBounds(0, 0, DISPLAY_WIDTH - 1, DISPLAY_HEIGHT - 1);
+    mFakePointerController->setPosition(100, 200);
+    mFakePointerController->setButtonState(0);
+
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(
+            AllOf(WithAction(AMOTION_EVENT_ACTION_HOVER_MOVE), WithSource(AINPUT_SOURCE_MOUSE),
+                  WithDisplayId(SECONDARY_DISPLAY_ID), WithCoords(110.0f, 220.0f))));
+    ASSERT_NO_FATAL_FAILURE(assertPosition(*mFakePointerController, 110.0f, 220.0f));
+}
+
+TEST_F(CursorInputMapperTest, ConfigureDisplayId_IgnoresEventsForMismatchedPointerDisplay) {
+    CursorInputMapper& mapper = addMapperAndConfigure<CursorInputMapper>();
+
+    // Set up the default display as the display on which the pointer should be shown.
+    prepareDisplay(DISPLAY_ORIENTATION_90);
+    mFakePolicy->setDefaultPointerDisplayId(DISPLAY_ID);
+
+    // Associate the InputDevice with the secondary display.
+    prepareSecondaryDisplay();
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_LOCATION, SECONDARY_DISPLAY_UNIQUE_ID);
+    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+
+    // The mapper should not generate any events because it is associated with a display that is
+    // different from the pointer display.
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_X, 10);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_REL, REL_Y, 20);
+    process(mapper, ARBITRARY_TIME, READ_TIME, EV_SYN, SYN_REPORT, 0);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasNotCalled());
 }
 
 // --- TouchInputMapperTest ---
@@ -6683,6 +6817,61 @@
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled());
 }
 
+TEST_F(SingleTouchInputMapperTest,
+       Process_WhenViewportActiveStatusChanged_TouchIsCanceledAndDeviceIsReset) {
+    addConfigurationProperty("touch.deviceType", "touchScreen");
+    prepareDisplay(DISPLAY_ORIENTATION_0);
+    prepareButtons();
+    prepareAxes(POSITION);
+    SingleTouchInputMapper& mapper = addMapperAndConfigure<SingleTouchInputMapper>();
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled());
+    NotifyMotionArgs motionArgs;
+
+    // Start a new gesture.
+    processDown(mapper, 100, 200);
+    processSync(mapper);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
+    ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
+
+    // Make the viewport inactive. This will put the device in disabled mode.
+    auto viewport = mFakePolicy->getDisplayViewportByType(ViewportType::INTERNAL);
+    viewport->isActive = false;
+    mFakePolicy->updateViewport(*viewport);
+    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+
+    // We should receive a cancel event for the ongoing gesture.
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
+    ASSERT_EQ(AMOTION_EVENT_ACTION_CANCEL, motionArgs.action);
+    // Then we should be notified that the device was reset.
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled());
+
+    // No events are generated while the viewport is inactive.
+    processMove(mapper, 101, 201);
+    processSync(mapper);
+    processDown(mapper, 102, 202);
+    processSync(mapper);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasNotCalled());
+
+    // Make the viewport active again. The device should resume processing events.
+    viewport->isActive = true;
+    mFakePolicy->updateViewport(*viewport);
+    configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+
+    // The device is reset because it changes back to direct mode, without generating any events.
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasCalled());
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasNotCalled());
+
+    // Start a new gesture.
+    processDown(mapper, 100, 200);
+    processSync(mapper);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
+    ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
+
+    // No more events.
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasNotCalled());
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyDeviceResetWasNotCalled());
+}
+
 // --- TouchDisplayProjectionTest ---
 
 class TouchDisplayProjectionTest : public SingleTouchInputMapperTest {
@@ -8540,27 +8729,27 @@
     ASSERT_TRUE(mFakePolicy->updateViewport(displayViewport));
     configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
 
-    // Finger move
+    // The ongoing touch should be canceled immediately
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
+    EXPECT_EQ(AMOTION_EVENT_ACTION_CANCEL, motionArgs.action);
+
+    // Finger move is ignored
     x += 10, y += 10;
     processPosition(mapper, x, y);
     processSync(mapper);
-
-    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    EXPECT_EQ(AMOTION_EVENT_ACTION_CANCEL, motionArgs.action);
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasNotCalled());
 
     // Reactivate display viewport
     displayViewport.isActive = true;
     ASSERT_TRUE(mFakePolicy->updateViewport(displayViewport));
     configureDevice(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
 
-    // Finger move again
+    // Finger move again starts new gesture
     x += 10, y += 10;
     processPosition(mapper, x, y);
     processSync(mapper);
-
-    // Gesture is aborted, so events after display is activated won't be dispatched until there is
-    // no pointer on the touch device.
-    mFakeListener->assertNotifyMotionWasNotCalled();
+    ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
+    EXPECT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
 }
 
 TEST_F(MultiTouchInputMapperTest, Process_Pointer_ShowTouches) {
diff --git a/services/inputflinger/tests/TestInputListener.cpp b/services/inputflinger/tests/TestInputListener.cpp
index 6a26c63..57b382c 100644
--- a/services/inputflinger/tests/TestInputListener.cpp
+++ b/services/inputflinger/tests/TestInputListener.cpp
@@ -69,6 +69,13 @@
                                            "Expected notifyMotion() to have been called."));
 }
 
+void TestInputListener::assertNotifyMotionWasCalled(
+        const ::testing::Matcher<NotifyMotionArgs>& matcher) {
+    NotifyMotionArgs outEventArgs;
+    ASSERT_NO_FATAL_FAILURE(assertNotifyMotionWasCalled(&outEventArgs));
+    ASSERT_THAT(outEventArgs, matcher);
+}
+
 void TestInputListener::assertNotifyMotionWasNotCalled() {
     ASSERT_NO_FATAL_FAILURE(
             assertNotCalled<NotifyMotionArgs>("notifyMotion() should not be called."));
diff --git a/services/inputflinger/tests/TestInputListener.h b/services/inputflinger/tests/TestInputListener.h
index 626cdfc..0bdfc6b 100644
--- a/services/inputflinger/tests/TestInputListener.h
+++ b/services/inputflinger/tests/TestInputListener.h
@@ -18,6 +18,7 @@
 #define _UI_TEST_INPUT_LISTENER_H
 
 #include <android-base/thread_annotations.h>
+#include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include "InputListener.h"
 
@@ -48,6 +49,8 @@
 
     void assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs = nullptr);
 
+    void assertNotifyMotionWasCalled(const ::testing::Matcher<NotifyMotionArgs>& matcher);
+
     void assertNotifyMotionWasNotCalled();
 
     void assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs = nullptr);
diff --git a/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp b/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
index 0062f42..29fa001 100644
--- a/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
+++ b/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
@@ -16,13 +16,17 @@
 
 #include "../UnwantedInteractionBlocker.h"
 #include <android-base/silent_death_test.h>
+#include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <gui/constants.h>
 #include <linux/input.h>
 #include <thread>
+#include "ui/events/ozone/evdev/touch_filter/neural_stylus_palm_detection_filter.h"
 
 #include "TestInputListener.h"
 
+using ::testing::AllOf;
+
 namespace android {
 
 constexpr int32_t DEVICE_ID = 3;
@@ -30,6 +34,8 @@
 constexpr int32_t Y_RESOLUTION = 11;
 constexpr int32_t MAJOR_RESOLUTION = 1;
 
+const nsecs_t RESAMPLE_PERIOD = ::ui::kResamplePeriod.InNanoseconds();
+
 constexpr int POINTER_0_DOWN =
         AMOTION_EVENT_ACTION_POINTER_DOWN | (0 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
 constexpr int POINTER_1_DOWN =
@@ -47,6 +53,27 @@
 constexpr int UP = AMOTION_EVENT_ACTION_UP;
 constexpr int CANCEL = AMOTION_EVENT_ACTION_CANCEL;
 
+constexpr int32_t FLAG_CANCELED = AMOTION_EVENT_FLAG_CANCELED;
+
+MATCHER_P(WithAction, action, "MotionEvent with specified action") {
+    bool result = true;
+    if (action == CANCEL) {
+        result &= (arg.flags & FLAG_CANCELED) != 0;
+    }
+    result &= arg.action == action;
+    *result_listener << "expected to receive " << MotionEvent::actionToString(action)
+                     << " but received " << MotionEvent::actionToString(arg.action) << " instead.";
+    return result;
+}
+
+MATCHER_P(WithFlags, flags, "MotionEvent with specified flags") {
+    return arg.flags == flags;
+}
+
+static nsecs_t toNs(std::chrono::nanoseconds duration) {
+    return duration.count();
+}
+
 struct PointerData {
     float x;
     float y;
@@ -252,7 +279,7 @@
                                      /*newSuppressedPointerIds*/ {1});
     ASSERT_EQ(2u, result.size());
     assertArgs(result[0], POINTER_1_UP, {{0, {1, 2, 3}}, {1, {4, 5, 6}}, {2, {7, 8, 9}}});
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, result[0].flags);
     assertArgs(result[1], MOVE, {{0, {1, 2, 3}}, {2, {7, 8, 9}}});
 }
 
@@ -267,7 +294,7 @@
                                      /*newSuppressedPointerIds*/ {0});
     ASSERT_EQ(1u, result.size());
     assertArgs(result[0], CANCEL, {{0, {1, 2, 3}}});
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, result[0].flags);
 }
 
 /**
@@ -282,7 +309,7 @@
                                      /*newSuppressedPointerIds*/ {1});
     ASSERT_EQ(1u, result.size());
     assertArgs(result[0], POINTER_1_UP, {{0, {1, 2, 3}}, {1, {4, 5, 6}}, {2, {7, 8, 9}}});
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, result[0].flags);
 }
 
 /**
@@ -297,7 +324,7 @@
                                      /*newSuppressedPointerIds*/ {0});
     ASSERT_EQ(1u, result.size());
     assertArgs(result[0], POINTER_0_UP, {{0, {1, 2, 3}}, {1, {4, 5, 6}}});
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, result[0].flags);
 }
 
 /**
@@ -312,7 +339,7 @@
                                      /*newSuppressedPointerIds*/ {0, 1});
     ASSERT_EQ(1u, result.size());
     assertArgs(result[0], CANCEL, {{0, {1, 2, 3}}, {1, {4, 5, 6}}});
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, result[0].flags);
 }
 
 /**
@@ -328,7 +355,7 @@
                                      /*newSuppressedPointerIds*/ {0, 1});
     ASSERT_EQ(1u, result.size());
     assertArgs(result[0], CANCEL, {{0, {1, 2, 3}}});
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, result[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, result[0].flags);
 }
 
 /**
@@ -384,7 +411,7 @@
     expected.reported_tool_type = ::ui::EventPointerType::kTouch;
     expected.stylus_button = false;
 
-    ASSERT_EQ(expected, touches[0]) << toString(touches[0]);
+    ASSERT_EQ(expected, touches[0]) << touches[0];
 }
 
 // --- UnwantedInteractionBlockerTest ---
@@ -569,6 +596,114 @@
     dumpThread.join();
 }
 
+/**
+ * Heuristic filter that's present in the palm rejection model blocks touches early if the size
+ * of the touch is large. This is an integration test that checks that this filter kicks in.
+ */
+TEST_F(UnwantedInteractionBlockerTest, HeuristicFilterWorks) {
+    mBlocker->notifyInputDevicesChanged({generateTestDeviceInfo()});
+    // Small touch down
+    NotifyMotionArgs args1 = generateMotionArgs(0 /*downTime*/, 0 /*eventTime*/, DOWN, {{1, 2, 3}});
+    mBlocker->notifyMotion(&args1);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(DOWN));
+
+    // Large touch oval on the next move
+    NotifyMotionArgs args2 =
+            generateMotionArgs(0 /*downTime*/, RESAMPLE_PERIOD, MOVE, {{4, 5, 200}});
+    mBlocker->notifyMotion(&args2);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(MOVE));
+
+    // Lift up the touch to force the model to decide on whether it's a palm
+    NotifyMotionArgs args3 =
+            generateMotionArgs(0 /*downTime*/, 2 * RESAMPLE_PERIOD, UP, {{4, 5, 200}});
+    mBlocker->notifyMotion(&args3);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(CANCEL));
+}
+
+/**
+ * Send a stylus event that would have triggered the heuristic palm detector if it were a touch
+ * event. However, since it's a stylus event, it should propagate without being canceled through
+ * the blocker.
+ * This is similar to `HeuristicFilterWorks` test, but for stylus tool.
+ */
+TEST_F(UnwantedInteractionBlockerTest, StylusIsNotBlocked) {
+    InputDeviceInfo info = generateTestDeviceInfo();
+    info.addSource(AINPUT_SOURCE_STYLUS);
+    mBlocker->notifyInputDevicesChanged({info});
+    NotifyMotionArgs args1 = generateMotionArgs(0 /*downTime*/, 0 /*eventTime*/, DOWN, {{1, 2, 3}});
+    args1.pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args1);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(DOWN));
+
+    // Move the stylus, setting large TOUCH_MAJOR/TOUCH_MINOR dimensions
+    NotifyMotionArgs args2 =
+            generateMotionArgs(0 /*downTime*/, RESAMPLE_PERIOD, MOVE, {{4, 5, 200}});
+    args2.pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args2);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(MOVE));
+
+    // Lift up the stylus. If it were a touch event, this would force the model to decide on whether
+    // it's a palm.
+    NotifyMotionArgs args3 =
+            generateMotionArgs(0 /*downTime*/, 2 * RESAMPLE_PERIOD, UP, {{4, 5, 200}});
+    args3.pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args3);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(UP));
+}
+
+/**
+ * Send a mixed touch and stylus event.
+ * The touch event goes first, and is a palm. The stylus event goes down after.
+ * Stylus event should continue to work even after touch is detected as a palm.
+ */
+TEST_F(UnwantedInteractionBlockerTest, TouchIsBlockedWhenMixedWithStylus) {
+    InputDeviceInfo info = generateTestDeviceInfo();
+    info.addSource(AINPUT_SOURCE_STYLUS);
+    mBlocker->notifyInputDevicesChanged({info});
+
+    // Touch down
+    NotifyMotionArgs args1 = generateMotionArgs(0 /*downTime*/, 0 /*eventTime*/, DOWN, {{1, 2, 3}});
+    mBlocker->notifyMotion(&args1);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(DOWN));
+
+    // Stylus pointer down
+    NotifyMotionArgs args2 = generateMotionArgs(0 /*downTime*/, RESAMPLE_PERIOD, POINTER_1_DOWN,
+                                                {{1, 2, 3}, {10, 20, 30}});
+    args2.pointerProperties[1].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args2);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(POINTER_1_DOWN));
+
+    // Large touch oval on the next finger move
+    NotifyMotionArgs args3 = generateMotionArgs(0 /*downTime*/, 2 * RESAMPLE_PERIOD, MOVE,
+                                                {{1, 2, 300}, {11, 21, 30}});
+    args3.pointerProperties[1].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args3);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(MOVE));
+
+    // Lift up the finger pointer. It should be canceled due to the heuristic filter.
+    NotifyMotionArgs args4 = generateMotionArgs(0 /*downTime*/, 3 * RESAMPLE_PERIOD, POINTER_0_UP,
+                                                {{1, 2, 300}, {11, 21, 30}});
+    args4.pointerProperties[1].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args4);
+    mTestListener.assertNotifyMotionWasCalled(
+            AllOf(WithAction(POINTER_0_UP), WithFlags(FLAG_CANCELED)));
+
+    NotifyMotionArgs args5 =
+            generateMotionArgs(0 /*downTime*/, 4 * RESAMPLE_PERIOD, MOVE, {{12, 22, 30}});
+    args5.pointerProperties[0].id = args4.pointerProperties[1].id;
+    args5.pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args5);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(MOVE));
+
+    // Lift up the stylus pointer
+    NotifyMotionArgs args6 =
+            generateMotionArgs(0 /*downTime*/, 5 * RESAMPLE_PERIOD, UP, {{4, 5, 200}});
+    args6.pointerProperties[0].id = args4.pointerProperties[1].id;
+    args6.pointerProperties[0].toolType = AMOTION_EVENT_TOOL_TYPE_STYLUS;
+    mBlocker->notifyMotion(&args6);
+    mTestListener.assertNotifyMotionWasCalled(WithAction(UP));
+}
+
 using UnwantedInteractionBlockerTestDeathTest = UnwantedInteractionBlockerTest;
 
 /**
@@ -630,138 +765,138 @@
  */
 TEST_F(PalmRejectorTest, TwoPointersAreCanceled) {
     std::vector<NotifyMotionArgs> argsList;
-    constexpr nsecs_t downTime = 255955749837000;
+    const nsecs_t downTime = toNs(0ms);
 
     mPalmRejector->processMotion(
             generateMotionArgs(downTime, downTime, DOWN, {{1342.0, 613.0, 79.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955759313000, MOVE, {{1406.0, 650.0, 52.0}}));
+            generateMotionArgs(downTime, toNs(8ms), MOVE, {{1406.0, 650.0, 52.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955766361000, MOVE, {{1429.0, 672.0, 46.0}}));
+            generateMotionArgs(downTime, toNs(16ms), MOVE, {{1429.0, 672.0, 46.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955775989000, MOVE, {{1417.0, 685.0, 41.0}}));
+            generateMotionArgs(downTime, toNs(24ms), MOVE, {{1417.0, 685.0, 41.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955775989000, POINTER_1_DOWN,
+            generateMotionArgs(downTime, toNs(32ms), POINTER_1_DOWN,
                                {{1417.0, 685.0, 41.0}, {1062.0, 697.0, 10.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955783039000, MOVE,
+            generateMotionArgs(downTime, toNs(40ms), MOVE,
                                {{1414.0, 702.0, 41.0}, {1059.0, 731.0, 12.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955792536000, MOVE,
+            generateMotionArgs(downTime, toNs(48ms), MOVE,
                                {{1415.0, 719.0, 44.0}, {1060.0, 760.0, 11.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955799474000, MOVE,
+            generateMotionArgs(downTime, toNs(56ms), MOVE,
                                {{1421.0, 733.0, 42.0}, {1065.0, 769.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955809177000, MOVE,
+            generateMotionArgs(downTime, toNs(64ms), MOVE,
                                {{1426.0, 742.0, 43.0}, {1068.0, 771.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955816131000, MOVE,
+            generateMotionArgs(downTime, toNs(72ms), MOVE,
                                {{1430.0, 748.0, 45.0}, {1069.0, 772.0, 13.0}}));
     argsList = mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955825907000, MOVE,
+            generateMotionArgs(downTime, toNs(80ms), MOVE,
                                {{1432.0, 750.0, 44.0}, {1069.0, 772.0, 13.0}}));
     ASSERT_EQ(1u, argsList.size());
     ASSERT_EQ(0 /* No FLAG_CANCELED */, argsList[0].flags);
     argsList = mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955832736000, MOVE,
+            generateMotionArgs(downTime, toNs(88ms), MOVE,
                                {{1433.0, 751.0, 44.0}, {1070.0, 771.0, 13.0}}));
     ASSERT_EQ(2u, argsList.size());
     ASSERT_EQ(POINTER_0_UP, argsList[0].action);
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
     ASSERT_EQ(MOVE, argsList[1].action);
     ASSERT_EQ(1u, argsList[1].pointerCount);
     ASSERT_EQ(0, argsList[1].flags);
 
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955842432000, MOVE,
+            generateMotionArgs(downTime, toNs(96ms), MOVE,
                                {{1433.0, 751.0, 42.0}, {1071.0, 770.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955849380000, MOVE,
+            generateMotionArgs(downTime, toNs(104ms), MOVE,
                                {{1433.0, 751.0, 45.0}, {1072.0, 769.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955859046000, MOVE,
+            generateMotionArgs(downTime, toNs(112ms), MOVE,
                                {{1433.0, 751.0, 43.0}, {1072.0, 768.0, 13.0}}));
     argsList = mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955869823000, MOVE,
+            generateMotionArgs(downTime, toNs(120ms), MOVE,
                                {{1433.0, 751.0, 45.0}, {1072.0, 767.0, 13.0}}));
     ASSERT_EQ(1u, argsList.size());
     ASSERT_EQ(AMOTION_EVENT_ACTION_CANCEL, argsList[0].action);
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955875641000, MOVE,
+            generateMotionArgs(downTime, toNs(128ms), MOVE,
                                {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955882693000, MOVE,
+            generateMotionArgs(downTime, toNs(136ms), MOVE,
                                {{1433.0, 750.0, 44.0}, {1072.0, 765.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955892324000, MOVE,
+            generateMotionArgs(downTime, toNs(144ms), MOVE,
                                {{1433.0, 750.0, 42.0}, {1072.0, 763.0, 14.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955899425000, MOVE,
+            generateMotionArgs(downTime, toNs(152ms), MOVE,
                                {{1434.0, 750.0, 44.0}, {1073.0, 761.0, 14.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955909400000, MOVE,
+            generateMotionArgs(downTime, toNs(160ms), MOVE,
                                {{1435.0, 750.0, 43.0}, {1073.0, 759.0, 15.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955915885000, MOVE,
+            generateMotionArgs(downTime, toNs(168ms), MOVE,
                                {{1436.0, 750.0, 45.0}, {1074.0, 757.0, 15.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955925607000, MOVE,
+            generateMotionArgs(downTime, toNs(176ms), MOVE,
                                {{1436.0, 750.0, 44.0}, {1074.0, 755.0, 15.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955932580000, MOVE,
+            generateMotionArgs(downTime, toNs(184ms), MOVE,
                                {{1436.0, 750.0, 45.0}, {1074.0, 753.0, 15.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955942231000, MOVE,
+            generateMotionArgs(downTime, toNs(192ms), MOVE,
                                {{1436.0, 749.0, 44.0}, {1074.0, 751.0, 15.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955949204000, MOVE,
+            generateMotionArgs(downTime, toNs(200ms), MOVE,
                                {{1435.0, 748.0, 45.0}, {1074.0, 749.0, 15.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955959103000, MOVE,
+            generateMotionArgs(downTime, toNs(208ms), MOVE,
                                {{1434.0, 746.0, 44.0}, {1074.0, 747.0, 14.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955965884000, MOVE,
+            generateMotionArgs(downTime, toNs(216ms), MOVE,
                                {{1433.0, 744.0, 44.0}, {1075.0, 745.0, 14.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955975649000, MOVE,
+            generateMotionArgs(downTime, toNs(224ms), MOVE,
                                {{1431.0, 741.0, 43.0}, {1075.0, 742.0, 13.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955982537000, MOVE,
+            generateMotionArgs(downTime, toNs(232ms), MOVE,
                                {{1428.0, 738.0, 43.0}, {1076.0, 739.0, 12.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955992284000, MOVE,
+            generateMotionArgs(downTime, toNs(240ms), MOVE,
                                {{1400.0, 726.0, 54.0}, {1076.0, 739.0, 13.0}}));
     argsList = mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955999348000, POINTER_1_UP,
+            generateMotionArgs(downTime, toNs(248ms), POINTER_1_UP,
                                {{1362.0, 716.0, 55.0}, {1076.0, 739.0, 13.0}}));
     ASSERT_TRUE(argsList.empty());
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255955999348000, MOVE, {{1362.0, 716.0, 55.0}}));
+            generateMotionArgs(downTime, toNs(256ms), MOVE, {{1362.0, 716.0, 55.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956008885000, MOVE, {{1347.0, 707.0, 54.0}}));
+            generateMotionArgs(downTime, toNs(264ms), MOVE, {{1347.0, 707.0, 54.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956015791000, MOVE, {{1340.0, 698.0, 54.0}}));
+            generateMotionArgs(downTime, toNs(272ms), MOVE, {{1340.0, 698.0, 54.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956025804000, MOVE, {{1338.0, 694.0, 55.0}}));
+            generateMotionArgs(downTime, toNs(280ms), MOVE, {{1338.0, 694.0, 55.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956032314000, MOVE, {{1336.0, 690.0, 53.0}}));
+            generateMotionArgs(downTime, toNs(288ms), MOVE, {{1336.0, 690.0, 53.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956042329000, MOVE, {{1334.0, 685.0, 47.0}}));
+            generateMotionArgs(downTime, toNs(296ms), MOVE, {{1334.0, 685.0, 47.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956048979000, MOVE, {{1333.0, 679.0, 46.0}}));
+            generateMotionArgs(downTime, toNs(304ms), MOVE, {{1333.0, 679.0, 46.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956058813000, MOVE, {{1332.0, 672.0, 45.0}}));
+            generateMotionArgs(downTime, toNs(312ms), MOVE, {{1332.0, 672.0, 45.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956065592000, MOVE, {{1333.0, 666.0, 40.0}}));
+            generateMotionArgs(downTime, toNs(320ms), MOVE, {{1333.0, 666.0, 40.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956075276000, MOVE, {{1336.0, 661.0, 24.0}}));
+            generateMotionArgs(downTime, toNs(328ms), MOVE, {{1336.0, 661.0, 24.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956082198000, MOVE, {{1338.0, 656.0, 16.0}}));
+            generateMotionArgs(downTime, toNs(336ms), MOVE, {{1338.0, 656.0, 16.0}}));
     mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956092059000, MOVE, {{1341.0, 649.0, 1.0}}));
+            generateMotionArgs(downTime, toNs(344ms), MOVE, {{1341.0, 649.0, 1.0}}));
     argsList = mPalmRejector->processMotion(
-            generateMotionArgs(downTime, 255956098764000, UP, {{1341.0, 649.0, 1.0}}));
+            generateMotionArgs(downTime, toNs(352ms), UP, {{1341.0, 649.0, 1.0}}));
     ASSERT_TRUE(argsList.empty());
 }
 
@@ -845,7 +980,7 @@
     ASSERT_EQ(2u, argsList.size());
     // First event - cancel pointer 1
     ASSERT_EQ(POINTER_1_UP, argsList[0].action);
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
     // Second event - send MOVE for the remaining pointer
     ASSERT_EQ(MOVE, argsList[1].action);
     ASSERT_EQ(0, argsList[1].flags);
@@ -886,7 +1021,7 @@
     // Cancel all
     ASSERT_EQ(CANCEL, argsList[0].action);
     ASSERT_EQ(2u, argsList[0].pointerCount);
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
 
     // Future move events are ignored
     argsList = mPalmRejector->processMotion(
@@ -932,7 +1067,7 @@
                                {{1414.0, 702.0, 41.0}, {1059.0, 731.0, 12.0}}));
     ASSERT_EQ(1u, argsList.size());
     ASSERT_EQ(CANCEL, argsList[0].action) << MotionEvent::actionToString(argsList[0].action);
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
 
     // Future move events should not go to the listener.
     argsList = mPalmRejector->processMotion(
@@ -966,7 +1101,7 @@
                                {{1417.0, 685.0, 41.0}, {1060, 700, 10.0}}));
     ASSERT_EQ(2u, argsList.size());
     ASSERT_EQ(POINTER_1_UP, argsList[0].action);
-    ASSERT_EQ(AMOTION_EVENT_FLAG_CANCELED, argsList[0].flags);
+    ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
 
     ASSERT_EQ(MOVE, argsList[1].action) << MotionEvent::actionToString(argsList[1].action);
     ASSERT_EQ(0, argsList[1].flags);
diff --git a/services/sensorservice/AidlSensorHalWrapper.cpp b/services/sensorservice/AidlSensorHalWrapper.cpp
index 4d1de96..f5b360f 100644
--- a/services/sensorservice/AidlSensorHalWrapper.cpp
+++ b/services/sensorservice/AidlSensorHalWrapper.cpp
@@ -23,6 +23,7 @@
 #include <aidlcommonsupport/NativeHandle.h>
 #include <android-base/logging.h>
 #include <android/binder_manager.h>
+#include <aidl/sensors/convert.h>
 
 using ::aidl::android::hardware::sensors::AdditionalInfo;
 using ::aidl::android::hardware::sensors::DynamicSensorInfo;
@@ -34,469 +35,16 @@
 using ::android::AidlMessageQueue;
 using ::android::hardware::EventFlag;
 using ::android::hardware::sensors::V2_1::implementation::MAX_RECEIVE_BUFFER_EVENT_COUNT;
+using ::android::hardware::sensors::implementation::convertToStatus;
+using ::android::hardware::sensors::implementation::convertToSensor;
+using ::android::hardware::sensors::implementation::convertToSensorEvent;
+using ::android::hardware::sensors::implementation::convertFromSensorEvent;
+
 
 namespace android {
 
 namespace {
 
-status_t convertToStatus(ndk::ScopedAStatus status) {
-    if (status.isOk()) {
-        return OK;
-    } else {
-        switch (status.getExceptionCode()) {
-            case EX_ILLEGAL_ARGUMENT: {
-                return BAD_VALUE;
-            }
-            case EX_SECURITY: {
-                return PERMISSION_DENIED;
-            }
-            case EX_UNSUPPORTED_OPERATION: {
-                return INVALID_OPERATION;
-            }
-            case EX_SERVICE_SPECIFIC: {
-                switch (status.getServiceSpecificError()) {
-                    case ISensors::ERROR_BAD_VALUE: {
-                        return BAD_VALUE;
-                    }
-                    case ISensors::ERROR_NO_MEMORY: {
-                        return NO_MEMORY;
-                    }
-                    default: {
-                        return UNKNOWN_ERROR;
-                    }
-                }
-            }
-            default: {
-                return UNKNOWN_ERROR;
-            }
-        }
-    }
-}
-
-void convertToSensor(const SensorInfo &src, sensor_t *dst) {
-    dst->name = strdup(src.name.c_str());
-    dst->vendor = strdup(src.vendor.c_str());
-    dst->version = src.version;
-    dst->handle = src.sensorHandle;
-    dst->type = (int)src.type;
-    dst->maxRange = src.maxRange;
-    dst->resolution = src.resolution;
-    dst->power = src.power;
-    dst->minDelay = src.minDelayUs;
-    dst->fifoReservedEventCount = src.fifoReservedEventCount;
-    dst->fifoMaxEventCount = src.fifoMaxEventCount;
-    dst->stringType = strdup(src.typeAsString.c_str());
-    dst->requiredPermission = strdup(src.requiredPermission.c_str());
-    dst->maxDelay = src.maxDelayUs;
-    dst->flags = src.flags;
-    dst->reserved[0] = dst->reserved[1] = 0;
-}
-
-void convertToSensorEvent(const Event &src, sensors_event_t *dst) {
-    *dst = {.version = sizeof(sensors_event_t),
-            .sensor = src.sensorHandle,
-            .type = (int32_t)src.sensorType,
-            .reserved0 = 0,
-            .timestamp = src.timestamp};
-
-    switch (src.sensorType) {
-        case SensorType::META_DATA: {
-            // Legacy HALs expect the handle reference in the meta data field.
-            // Copy it over from the handle of the event.
-            dst->meta_data.what = (int32_t)src.payload.get<Event::EventPayload::meta>().what;
-            dst->meta_data.sensor = src.sensorHandle;
-            // Set the sensor handle to 0 to maintain compatibility.
-            dst->sensor = 0;
-            break;
-        }
-
-        case SensorType::ACCELEROMETER:
-        case SensorType::MAGNETIC_FIELD:
-        case SensorType::ORIENTATION:
-        case SensorType::GYROSCOPE:
-        case SensorType::GRAVITY:
-        case SensorType::LINEAR_ACCELERATION: {
-            dst->acceleration.x = src.payload.get<Event::EventPayload::vec3>().x;
-            dst->acceleration.y = src.payload.get<Event::EventPayload::vec3>().y;
-            dst->acceleration.z = src.payload.get<Event::EventPayload::vec3>().z;
-            dst->acceleration.status = (int32_t)src.payload.get<Event::EventPayload::vec3>().status;
-            break;
-        }
-
-        case SensorType::GAME_ROTATION_VECTOR: {
-            dst->data[0] = src.payload.get<Event::EventPayload::vec4>().x;
-            dst->data[1] = src.payload.get<Event::EventPayload::vec4>().y;
-            dst->data[2] = src.payload.get<Event::EventPayload::vec4>().z;
-            dst->data[3] = src.payload.get<Event::EventPayload::vec4>().w;
-            break;
-        }
-
-        case SensorType::ROTATION_VECTOR:
-        case SensorType::GEOMAGNETIC_ROTATION_VECTOR: {
-            dst->data[0] = src.payload.get<Event::EventPayload::data>().values[0];
-            dst->data[1] = src.payload.get<Event::EventPayload::data>().values[1];
-            dst->data[2] = src.payload.get<Event::EventPayload::data>().values[2];
-            dst->data[3] = src.payload.get<Event::EventPayload::data>().values[3];
-            dst->data[4] = src.payload.get<Event::EventPayload::data>().values[4];
-            break;
-        }
-
-        case SensorType::MAGNETIC_FIELD_UNCALIBRATED:
-        case SensorType::GYROSCOPE_UNCALIBRATED:
-        case SensorType::ACCELEROMETER_UNCALIBRATED: {
-            dst->uncalibrated_gyro.x_uncalib = src.payload.get<Event::EventPayload::uncal>().x;
-            dst->uncalibrated_gyro.y_uncalib = src.payload.get<Event::EventPayload::uncal>().y;
-            dst->uncalibrated_gyro.z_uncalib = src.payload.get<Event::EventPayload::uncal>().z;
-            dst->uncalibrated_gyro.x_bias = src.payload.get<Event::EventPayload::uncal>().xBias;
-            dst->uncalibrated_gyro.y_bias = src.payload.get<Event::EventPayload::uncal>().yBias;
-            dst->uncalibrated_gyro.z_bias = src.payload.get<Event::EventPayload::uncal>().zBias;
-            break;
-        }
-
-        case SensorType::HINGE_ANGLE:
-        case SensorType::DEVICE_ORIENTATION:
-        case SensorType::LIGHT:
-        case SensorType::PRESSURE:
-        case SensorType::PROXIMITY:
-        case SensorType::RELATIVE_HUMIDITY:
-        case SensorType::AMBIENT_TEMPERATURE:
-        case SensorType::SIGNIFICANT_MOTION:
-        case SensorType::STEP_DETECTOR:
-        case SensorType::TILT_DETECTOR:
-        case SensorType::WAKE_GESTURE:
-        case SensorType::GLANCE_GESTURE:
-        case SensorType::PICK_UP_GESTURE:
-        case SensorType::WRIST_TILT_GESTURE:
-        case SensorType::STATIONARY_DETECT:
-        case SensorType::MOTION_DETECT:
-        case SensorType::HEART_BEAT:
-        case SensorType::LOW_LATENCY_OFFBODY_DETECT: {
-            dst->data[0] = src.payload.get<Event::EventPayload::scalar>();
-            break;
-        }
-
-        case SensorType::STEP_COUNTER: {
-            dst->u64.step_counter = src.payload.get<Event::EventPayload::stepCount>();
-            break;
-        }
-
-        case SensorType::HEART_RATE: {
-            dst->heart_rate.bpm = src.payload.get<Event::EventPayload::heartRate>().bpm;
-            dst->heart_rate.status =
-                    (int8_t)src.payload.get<Event::EventPayload::heartRate>().status;
-            break;
-        }
-
-        case SensorType::POSE_6DOF: { // 15 floats
-            for (size_t i = 0; i < 15; ++i) {
-                dst->data[i] = src.payload.get<Event::EventPayload::pose6DOF>().values[i];
-            }
-            break;
-        }
-
-        case SensorType::DYNAMIC_SENSOR_META: {
-            dst->dynamic_sensor_meta.connected =
-                    src.payload.get<Event::EventPayload::dynamic>().connected;
-            dst->dynamic_sensor_meta.handle =
-                    src.payload.get<Event::EventPayload::dynamic>().sensorHandle;
-            dst->dynamic_sensor_meta.sensor = NULL; // to be filled in later
-
-            memcpy(dst->dynamic_sensor_meta.uuid,
-                   src.payload.get<Event::EventPayload::dynamic>().uuid.values.data(), 16);
-
-            break;
-        }
-
-        case SensorType::ADDITIONAL_INFO: {
-            const AdditionalInfo &srcInfo = src.payload.get<Event::EventPayload::additional>();
-
-            additional_info_event_t *dstInfo = &dst->additional_info;
-            dstInfo->type = (int32_t)srcInfo.type;
-            dstInfo->serial = srcInfo.serial;
-
-            switch (srcInfo.payload.getTag()) {
-                case AdditionalInfo::AdditionalInfoPayload::Tag::dataInt32: {
-                    const auto &values =
-                            srcInfo.payload.get<AdditionalInfo::AdditionalInfoPayload::dataInt32>()
-                                    .values;
-                    CHECK_EQ(values.size() * sizeof(int32_t), sizeof(dstInfo->data_int32));
-                    memcpy(dstInfo->data_int32, values.data(), sizeof(dstInfo->data_int32));
-                    break;
-                }
-                case AdditionalInfo::AdditionalInfoPayload::Tag::dataFloat: {
-                    const auto &values =
-                            srcInfo.payload.get<AdditionalInfo::AdditionalInfoPayload::dataFloat>()
-                                    .values;
-                    CHECK_EQ(values.size() * sizeof(float), sizeof(dstInfo->data_float));
-                    memcpy(dstInfo->data_float, values.data(), sizeof(dstInfo->data_float));
-                    break;
-                }
-                default: {
-                    ALOGE("Invalid sensor additional info tag: %d", (int)srcInfo.payload.getTag());
-                }
-            }
-            break;
-        }
-
-        case SensorType::HEAD_TRACKER: {
-            const auto &ht = src.payload.get<Event::EventPayload::headTracker>();
-            dst->head_tracker.rx = ht.rx;
-            dst->head_tracker.ry = ht.ry;
-            dst->head_tracker.rz = ht.rz;
-            dst->head_tracker.vx = ht.vx;
-            dst->head_tracker.vy = ht.vy;
-            dst->head_tracker.vz = ht.vz;
-            dst->head_tracker.discontinuity_count = ht.discontinuityCount;
-            break;
-        }
-
-        case SensorType::ACCELEROMETER_LIMITED_AXES:
-        case SensorType::GYROSCOPE_LIMITED_AXES:
-            dst->limited_axes_imu.x = src.payload.get<Event::EventPayload::limitedAxesImu>().x;
-            dst->limited_axes_imu.y = src.payload.get<Event::EventPayload::limitedAxesImu>().y;
-            dst->limited_axes_imu.z = src.payload.get<Event::EventPayload::limitedAxesImu>().z;
-            dst->limited_axes_imu.x_supported =
-                    src.payload.get<Event::EventPayload::limitedAxesImu>().xSupported;
-            dst->limited_axes_imu.y_supported =
-                    src.payload.get<Event::EventPayload::limitedAxesImu>().ySupported;
-            dst->limited_axes_imu.z_supported =
-                    src.payload.get<Event::EventPayload::limitedAxesImu>().zSupported;
-            break;
-
-        case SensorType::ACCELEROMETER_LIMITED_AXES_UNCALIBRATED:
-        case SensorType::GYROSCOPE_LIMITED_AXES_UNCALIBRATED:
-            dst->limited_axes_imu_uncalibrated.x_uncalib =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().x;
-            dst->limited_axes_imu_uncalibrated.y_uncalib =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().y;
-            dst->limited_axes_imu_uncalibrated.z_uncalib =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().z;
-            dst->limited_axes_imu_uncalibrated.x_bias =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().xBias;
-            dst->limited_axes_imu_uncalibrated.y_bias =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().yBias;
-            dst->limited_axes_imu_uncalibrated.z_bias =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().zBias;
-            dst->limited_axes_imu_uncalibrated.x_supported =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().xSupported;
-            dst->limited_axes_imu_uncalibrated.y_supported =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().ySupported;
-            dst->limited_axes_imu_uncalibrated.z_supported =
-                    src.payload.get<Event::EventPayload::limitedAxesImuUncal>().zSupported;
-            break;
-
-        case SensorType::HEADING:
-            dst->heading.heading = src.payload.get<Event::EventPayload::heading>().heading;
-            dst->heading.accuracy = src.payload.get<Event::EventPayload::heading>().accuracy;
-            break;
-
-        default: {
-            CHECK_GE((int32_t)src.sensorType, (int32_t)SensorType::DEVICE_PRIVATE_BASE);
-
-            memcpy(dst->data, src.payload.get<Event::EventPayload::data>().values.data(),
-                   16 * sizeof(float));
-            break;
-        }
-    }
-}
-
-void convertFromSensorEvent(const sensors_event_t &src, Event *dst) {
-    *dst = {
-            .timestamp = src.timestamp,
-            .sensorHandle = src.sensor,
-            .sensorType = (SensorType)src.type,
-    };
-
-    switch (dst->sensorType) {
-        case SensorType::META_DATA: {
-            Event::EventPayload::MetaData meta;
-            meta.what = (Event::EventPayload::MetaData::MetaDataEventType)src.meta_data.what;
-            // Legacy HALs contain the handle reference in the meta data field.
-            // Copy that over to the handle of the event. In legacy HALs this
-            // field was expected to be 0.
-            dst->sensorHandle = src.meta_data.sensor;
-            dst->payload.set<Event::EventPayload::Tag::meta>(meta);
-            break;
-        }
-
-        case SensorType::ACCELEROMETER:
-        case SensorType::MAGNETIC_FIELD:
-        case SensorType::ORIENTATION:
-        case SensorType::GYROSCOPE:
-        case SensorType::GRAVITY:
-        case SensorType::LINEAR_ACCELERATION: {
-            Event::EventPayload::Vec3 vec3;
-            vec3.x = src.acceleration.x;
-            vec3.y = src.acceleration.y;
-            vec3.z = src.acceleration.z;
-            vec3.status = (SensorStatus)src.acceleration.status;
-            dst->payload.set<Event::EventPayload::Tag::vec3>(vec3);
-            break;
-        }
-
-        case SensorType::GAME_ROTATION_VECTOR: {
-            Event::EventPayload::Vec4 vec4;
-            vec4.x = src.data[0];
-            vec4.y = src.data[1];
-            vec4.z = src.data[2];
-            vec4.w = src.data[3];
-            dst->payload.set<Event::EventPayload::Tag::vec4>(vec4);
-            break;
-        }
-
-        case SensorType::ROTATION_VECTOR:
-        case SensorType::GEOMAGNETIC_ROTATION_VECTOR: {
-            Event::EventPayload::Data data;
-            memcpy(data.values.data(), src.data, 5 * sizeof(float));
-            dst->payload.set<Event::EventPayload::Tag::data>(data);
-            break;
-        }
-
-        case SensorType::MAGNETIC_FIELD_UNCALIBRATED:
-        case SensorType::GYROSCOPE_UNCALIBRATED:
-        case SensorType::ACCELEROMETER_UNCALIBRATED: {
-            Event::EventPayload::Uncal uncal;
-            uncal.x = src.uncalibrated_gyro.x_uncalib;
-            uncal.y = src.uncalibrated_gyro.y_uncalib;
-            uncal.z = src.uncalibrated_gyro.z_uncalib;
-            uncal.xBias = src.uncalibrated_gyro.x_bias;
-            uncal.yBias = src.uncalibrated_gyro.y_bias;
-            uncal.zBias = src.uncalibrated_gyro.z_bias;
-            dst->payload.set<Event::EventPayload::Tag::uncal>(uncal);
-            break;
-        }
-
-        case SensorType::DEVICE_ORIENTATION:
-        case SensorType::LIGHT:
-        case SensorType::PRESSURE:
-        case SensorType::PROXIMITY:
-        case SensorType::RELATIVE_HUMIDITY:
-        case SensorType::AMBIENT_TEMPERATURE:
-        case SensorType::SIGNIFICANT_MOTION:
-        case SensorType::STEP_DETECTOR:
-        case SensorType::TILT_DETECTOR:
-        case SensorType::WAKE_GESTURE:
-        case SensorType::GLANCE_GESTURE:
-        case SensorType::PICK_UP_GESTURE:
-        case SensorType::WRIST_TILT_GESTURE:
-        case SensorType::STATIONARY_DETECT:
-        case SensorType::MOTION_DETECT:
-        case SensorType::HEART_BEAT:
-        case SensorType::LOW_LATENCY_OFFBODY_DETECT:
-        case SensorType::HINGE_ANGLE: {
-            dst->payload.set<Event::EventPayload::Tag::scalar>((float)src.data[0]);
-            break;
-        }
-
-        case SensorType::STEP_COUNTER: {
-            dst->payload.set<Event::EventPayload::Tag::stepCount>(src.u64.step_counter);
-            break;
-        }
-
-        case SensorType::HEART_RATE: {
-            Event::EventPayload::HeartRate heartRate;
-            heartRate.bpm = src.heart_rate.bpm;
-            heartRate.status = (SensorStatus)src.heart_rate.status;
-            dst->payload.set<Event::EventPayload::Tag::heartRate>(heartRate);
-            break;
-        }
-
-        case SensorType::POSE_6DOF: { // 15 floats
-            Event::EventPayload::Pose6Dof pose6DOF;
-            for (size_t i = 0; i < 15; ++i) {
-                pose6DOF.values[i] = src.data[i];
-            }
-            dst->payload.set<Event::EventPayload::Tag::pose6DOF>(pose6DOF);
-            break;
-        }
-
-        case SensorType::DYNAMIC_SENSOR_META: {
-            DynamicSensorInfo dynamic;
-            dynamic.connected = src.dynamic_sensor_meta.connected;
-            dynamic.sensorHandle = src.dynamic_sensor_meta.handle;
-
-            memcpy(dynamic.uuid.values.data(), src.dynamic_sensor_meta.uuid, 16);
-            dst->payload.set<Event::EventPayload::Tag::dynamic>(dynamic);
-            break;
-        }
-
-        case SensorType::ADDITIONAL_INFO: {
-            AdditionalInfo info;
-            const additional_info_event_t &srcInfo = src.additional_info;
-            info.type = (AdditionalInfo::AdditionalInfoType)srcInfo.type;
-            info.serial = srcInfo.serial;
-
-            AdditionalInfo::AdditionalInfoPayload::Int32Values data;
-            CHECK_EQ(data.values.size() * sizeof(int32_t), sizeof(srcInfo.data_int32));
-            memcpy(data.values.data(), srcInfo.data_int32, sizeof(srcInfo.data_int32));
-            info.payload.set<AdditionalInfo::AdditionalInfoPayload::Tag::dataInt32>(data);
-
-            dst->payload.set<Event::EventPayload::Tag::additional>(info);
-            break;
-        }
-
-        case SensorType::HEAD_TRACKER: {
-            Event::EventPayload::HeadTracker headTracker;
-            headTracker.rx = src.head_tracker.rx;
-            headTracker.ry = src.head_tracker.ry;
-            headTracker.rz = src.head_tracker.rz;
-            headTracker.vx = src.head_tracker.vx;
-            headTracker.vy = src.head_tracker.vy;
-            headTracker.vz = src.head_tracker.vz;
-            headTracker.discontinuityCount = src.head_tracker.discontinuity_count;
-
-            dst->payload.set<Event::EventPayload::Tag::headTracker>(headTracker);
-            break;
-        }
-
-        case SensorType::ACCELEROMETER_LIMITED_AXES:
-        case SensorType::GYROSCOPE_LIMITED_AXES: {
-            Event::EventPayload::LimitedAxesImu limitedAxesImu;
-            limitedAxesImu.x = src.limited_axes_imu.x;
-            limitedAxesImu.y = src.limited_axes_imu.y;
-            limitedAxesImu.z = src.limited_axes_imu.z;
-            limitedAxesImu.xSupported = src.limited_axes_imu.x_supported;
-            limitedAxesImu.ySupported = src.limited_axes_imu.y_supported;
-            limitedAxesImu.zSupported = src.limited_axes_imu.z_supported;
-            dst->payload.set<Event::EventPayload::Tag::limitedAxesImu>(limitedAxesImu);
-            break;
-        }
-
-        case SensorType::ACCELEROMETER_LIMITED_AXES_UNCALIBRATED:
-        case SensorType::GYROSCOPE_LIMITED_AXES_UNCALIBRATED: {
-            Event::EventPayload::LimitedAxesImuUncal limitedAxesImuUncal;
-            limitedAxesImuUncal.x = src.limited_axes_imu_uncalibrated.x_uncalib;
-            limitedAxesImuUncal.y = src.limited_axes_imu_uncalibrated.y_uncalib;
-            limitedAxesImuUncal.z = src.limited_axes_imu_uncalibrated.z_uncalib;
-            limitedAxesImuUncal.xBias = src.limited_axes_imu_uncalibrated.x_bias;
-            limitedAxesImuUncal.yBias = src.limited_axes_imu_uncalibrated.y_bias;
-            limitedAxesImuUncal.zBias = src.limited_axes_imu_uncalibrated.z_bias;
-            limitedAxesImuUncal.xSupported = src.limited_axes_imu_uncalibrated.x_supported;
-            limitedAxesImuUncal.ySupported = src.limited_axes_imu_uncalibrated.y_supported;
-            limitedAxesImuUncal.zSupported = src.limited_axes_imu_uncalibrated.z_supported;
-            dst->payload.set<Event::EventPayload::Tag::limitedAxesImuUncal>(limitedAxesImuUncal);
-            break;
-        }
-
-        case SensorType::HEADING: {
-            Event::EventPayload::Heading heading;
-            heading.heading = src.heading.heading;
-            heading.accuracy = src.heading.accuracy;
-            dst->payload.set<Event::EventPayload::heading>(heading);
-            break;
-        }
-
-        default: {
-            CHECK_GE((int32_t)dst->sensorType, (int32_t)SensorType::DEVICE_PRIVATE_BASE);
-
-            Event::EventPayload::Data data;
-            memcpy(data.values.data(), src.data, 16 * sizeof(float));
-            dst->payload.set<Event::EventPayload::Tag::data>(data);
-            break;
-        }
-    }
-}
-
 void serviceDied(void *cookie) {
     ALOGW("Sensors HAL died, attempting to reconnect.");
     ((AidlSensorHalWrapper *)cookie)->prepareForReconnect();
@@ -726,7 +274,7 @@
             .type = type,
             .format = format,
             .size = static_cast<int32_t>(memory->size),
-            .memoryHandle = makeToAidl(memory->handle),
+            .memoryHandle = dupToAidl(memory->handle),
     };
 
     return convertToStatus(mSensors->registerDirectChannel(mem, channelHandle));
diff --git a/services/sensorservice/Android.bp b/services/sensorservice/Android.bp
index 3c4f8d9..a2042d6 100644
--- a/services/sensorservice/Android.bp
+++ b/services/sensorservice/Android.bp
@@ -75,6 +75,7 @@
     static_libs: [
         "libaidlcommonsupport",
         "android.hardware.sensors@1.0-convert",
+        "android.hardware.sensors-V1-convert",
         "android.hardware.sensors-V1-ndk",
     ],
 
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 948692b..e0a4f03 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -1328,6 +1328,7 @@
             mSensors.getUserDebugSensors() : mSensors.getUserSensors();
     Vector<Sensor> accessibleSensorList;
 
+    resetTargetSdkVersionCache(opPackageName);
     bool isCapped = isRateCappedBasedOnPermission(opPackageName);
     for (size_t i = 0; i < initialSensorList.size(); i++) {
         Sensor sensor = initialSensorList[i];
@@ -1367,6 +1368,7 @@
     if (requestedMode != NORMAL && requestedMode != DATA_INJECTION) {
         return nullptr;
     }
+    resetTargetSdkVersionCache(opPackageName);
 
     Mutex::Autolock _l(mLock);
     // To create a client in DATA_INJECTION mode to inject data, SensorService should already be
@@ -1402,6 +1404,7 @@
 sp<ISensorEventConnection> SensorService::createSensorDirectConnection(
         const String16& opPackageName, uint32_t size, int32_t type, int32_t format,
         const native_handle *resource) {
+    resetTargetSdkVersionCache(opPackageName);
     ConnectionSafeAutolock connLock = mConnectionHolder.lock(mLock);
 
     // No new direct connections are allowed when sensor privacy is enabled
@@ -1643,14 +1646,6 @@
         checkWakeLockStateLocked(&connLock);
     }
 
-    {
-        Mutex::Autolock packageLock(sPackageTargetVersionLock);
-        auto iter = sPackageTargetVersion.find(c->mOpPackageName);
-        if (iter != sPackageTargetVersion.end()) {
-            sPackageTargetVersion.erase(iter);
-        }
-    }
-
     SensorDevice& dev(SensorDevice::getInstance());
     dev.notifyConnectionDestroyed(c);
 }
@@ -2091,6 +2086,14 @@
     return targetSdkVersion;
 }
 
+void SensorService::resetTargetSdkVersionCache(const String16& opPackageName) {
+    Mutex::Autolock packageLock(sPackageTargetVersionLock);
+    auto iter = sPackageTargetVersion.find(opPackageName);
+    if (iter != sPackageTargetVersion.end()) {
+        sPackageTargetVersion.erase(iter);
+    }
+}
+
 void SensorService::checkWakeLockState() {
     ConnectionSafeAutolock connLock = mConnectionHolder.lock(mLock);
     checkWakeLockStateLocked(&connLock);
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
index 234dc9c..4ba3c51 100644
--- a/services/sensorservice/SensorService.h
+++ b/services/sensorservice/SensorService.h
@@ -377,6 +377,7 @@
             const String16& opPackageName);
     static bool hasPermissionForSensor(const Sensor& sensor);
     static int getTargetSdkVersion(const String16& opPackageName);
+    static void resetTargetSdkVersionCache(const String16& opPackageName);
     // SensorService acquires a partial wakelock for delivering events from wake up sensors. This
     // method checks whether all the events from these wake up sensors have been delivered to the
     // corresponding applications, if yes the wakelock is released.
diff --git a/services/sensorservice/aidl/Android.bp b/services/sensorservice/aidl/Android.bp
new file mode 100644
index 0000000..34d1de7
--- /dev/null
+++ b/services/sensorservice/aidl/Android.bp
@@ -0,0 +1,44 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "frameworks_native_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["frameworks_native_license"],
+}
+
+cc_library {
+    name: "libsensorserviceaidl",
+    srcs: [
+        "EventQueue.cpp",
+        "DirectReportChannel.cpp",
+        "SensorManager.cpp",
+        "utils.cpp",
+    ],
+    host_supported: true,
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    header_libs: ["jni_headers"],
+    shared_libs: [
+        "libbase",
+        "libutils",
+        "libcutils",
+        "libbinder_ndk",
+        "libsensor",
+        "android.frameworks.sensorservice-V1-ndk",
+        "android.hardware.sensors-V1-ndk",
+    ],
+    export_include_dirs: [
+        "include/",
+    ],
+    static_libs: [
+        "android.hardware.sensors-V1-convert",
+    ],
+
+    export_header_lib_headers: ["jni_headers"],
+    local_include_dirs: [
+        "include/sensorserviceaidl/",
+    ],
+}
diff --git a/services/sensorservice/aidl/DirectReportChannel.cpp b/services/sensorservice/aidl/DirectReportChannel.cpp
new file mode 100644
index 0000000..cab53c1
--- /dev/null
+++ b/services/sensorservice/aidl/DirectReportChannel.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 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 "DirectReportChannel.h"
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+DirectReportChannel::DirectReportChannel(::android::SensorManager& manager, int channelId)
+      : mManager(manager), mId(channelId) {}
+
+DirectReportChannel::~DirectReportChannel() {
+    mManager.destroyDirectChannel(mId);
+}
+
+ndk::ScopedAStatus DirectReportChannel::configure(
+        int32_t sensorHandle, ::aidl::android::hardware::sensors::ISensors::RateLevel rate,
+        int32_t* _aidl_return) {
+    int token = mManager.configureDirectChannel(mId, sensorHandle, static_cast<int>(rate));
+    if (token <= 0) {
+        return ndk::ScopedAStatus::fromServiceSpecificError(token);
+    }
+    *_aidl_return = token;
+    return ndk::ScopedAStatus::ok();
+}
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/DirectReportChannel.h b/services/sensorservice/aidl/DirectReportChannel.h
new file mode 100644
index 0000000..d9ea73d
--- /dev/null
+++ b/services/sensorservice/aidl/DirectReportChannel.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 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/frameworks/sensorservice/BnDirectReportChannel.h>
+#include <aidl/android/hardware/sensors/ISensors.h>
+#include <sensor/SensorManager.h>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+class DirectReportChannel final
+      : public ::aidl::android::frameworks::sensorservice::BnDirectReportChannel {
+public:
+    DirectReportChannel(::android::SensorManager& manager, int channelId);
+    ~DirectReportChannel();
+
+    ndk::ScopedAStatus configure(int32_t sensorHandle,
+                                 ::aidl::android::hardware::sensors::ISensors::RateLevel rate,
+                                 int32_t* _aidl_return) override;
+
+private:
+    ::android::SensorManager& mManager;
+    const int mId;
+};
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/EventQueue.cpp b/services/sensorservice/aidl/EventQueue.cpp
new file mode 100644
index 0000000..c394709
--- /dev/null
+++ b/services/sensorservice/aidl/EventQueue.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2022 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 "EventQueue.h"
+#include "utils.h"
+
+#include <android-base/logging.h>
+#include <utils/Looper.h>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+using ::aidl::android::frameworks::sensorservice::IEventQueueCallback;
+using ::aidl::android::hardware::sensors::Event;
+
+class EventQueueLooperCallback : public ::android::LooperCallback {
+public:
+    EventQueueLooperCallback(sp<::android::SensorEventQueue> queue,
+                             std::shared_ptr<IEventQueueCallback> callback)
+          : mQueue(queue), mCallback(callback) {}
+
+    int handleEvent(int /* fd */, int /* events */, void* /* data */) {
+        ASensorEvent event;
+        ssize_t actual;
+
+        auto internalQueue = mQueue.promote();
+        if (internalQueue == nullptr) {
+            return 1;
+        }
+
+        while ((actual = internalQueue->read(&event, 1)) > 0) {
+            internalQueue->sendAck(&event, actual);
+            ndk::ScopedAStatus ret = mCallback->onEvent(convertEvent(event));
+            if (!ret.isOk()) {
+                LOG(ERROR) << "Failed to envoke EventQueueCallback: " << ret;
+            }
+        }
+
+        return 1; // continue to receive callbacks
+    }
+
+private:
+    wp<::android::SensorEventQueue> mQueue;
+    std::shared_ptr<IEventQueueCallback> mCallback;
+};
+
+EventQueue::EventQueue(std::shared_ptr<IEventQueueCallback> callback, sp<::android::Looper> looper,
+                       sp<::android::SensorEventQueue> internalQueue)
+      : mLooper(looper), mInternalQueue(internalQueue) {
+    mLooper->addFd(internalQueue->getFd(), ALOOPER_POLL_CALLBACK, ALOOPER_EVENT_INPUT,
+                   new EventQueueLooperCallback(internalQueue, callback), nullptr);
+}
+
+EventQueue::~EventQueue() {
+    mLooper->removeFd(mInternalQueue->getFd());
+}
+
+ndk::ScopedAStatus EventQueue::enableSensor(int32_t in_sensorHandle, int32_t in_samplingPeriodUs,
+                                            int64_t in_maxBatchReportLatencyUs) {
+    return convertResult(mInternalQueue->enableSensor(in_sensorHandle, in_samplingPeriodUs,
+                                                      in_maxBatchReportLatencyUs, 0));
+}
+
+ndk::ScopedAStatus EventQueue::disableSensor(int32_t in_sensorHandle) {
+    return convertResult(mInternalQueue->disableSensor(in_sensorHandle));
+}
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/EventQueue.h b/services/sensorservice/aidl/EventQueue.h
new file mode 100644
index 0000000..0ae1eba
--- /dev/null
+++ b/services/sensorservice/aidl/EventQueue.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2022 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 "SensorManagerAidl.h"
+
+#include <aidl/android/frameworks/sensorservice/BnEventQueue.h>
+#include <sensor/SensorManager.h>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+struct EventQueue final : public aidl::android::frameworks::sensorservice::BnEventQueue {
+    EventQueue(
+            std::shared_ptr<aidl::android::frameworks::sensorservice::IEventQueueCallback> callback,
+            sp<::android::Looper> looper, sp<::android::SensorEventQueue> internalQueue);
+    ~EventQueue();
+
+    ndk::ScopedAStatus enableSensor(int32_t in_sensorHandle, int32_t in_samplingPeriodUs,
+                                    int64_t in_maxBatchReportLatencyUs) override;
+    ndk::ScopedAStatus disableSensor(int32_t sensorHandle) override;
+
+private:
+    friend class EventQueueLooperCallback;
+    sp<::android::Looper> mLooper;
+    sp<::android::SensorEventQueue> mInternalQueue;
+};
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/SensorManager.cpp b/services/sensorservice/aidl/SensorManager.cpp
new file mode 100644
index 0000000..9b03344
--- /dev/null
+++ b/services/sensorservice/aidl/SensorManager.cpp
@@ -0,0 +1,254 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+// LOG_TAG defined via build flag.
+#ifndef LOG_TAG
+#define LOG_TAG "AidlSensorManager"
+#endif
+
+#include "DirectReportChannel.h"
+#include "EventQueue.h"
+#include "SensorManagerAidl.h"
+#include "utils.h"
+
+#include <aidl/android/hardware/sensors/ISensors.h>
+#include <android-base/logging.h>
+#include <android/binder_ibinder.h>
+#include <sched.h>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+using ::aidl::android::frameworks::sensorservice::IDirectReportChannel;
+using ::aidl::android::frameworks::sensorservice::IEventQueue;
+using ::aidl::android::frameworks::sensorservice::IEventQueueCallback;
+using ::aidl::android::frameworks::sensorservice::ISensorManager;
+using ::aidl::android::hardware::common::Ashmem;
+using ::aidl::android::hardware::sensors::ISensors;
+using ::aidl::android::hardware::sensors::SensorInfo;
+using ::aidl::android::hardware::sensors::SensorType;
+using ::android::frameworks::sensorservice::implementation::SensorManagerAidl;
+
+static const char* POLL_THREAD_NAME = "aidl_ssvc_poll";
+
+SensorManagerAidl::SensorManagerAidl(JavaVM* vm)
+      : mLooper(new Looper(false)), mStopThread(true), mJavaVm(vm) {}
+SensorManagerAidl::~SensorManagerAidl() {
+    // Stops pollAll inside the thread.
+    std::lock_guard<std::mutex> lock(mThreadMutex);
+
+    mStopThread = true;
+    if (mLooper != nullptr) {
+        mLooper->wake();
+    }
+    if (mPollThread.joinable()) {
+        mPollThread.join();
+    }
+}
+
+ndk::ScopedAStatus createDirectChannel(::android::SensorManager& manager, size_t size, int type,
+                                       const native_handle_t* handle,
+                                       std::shared_ptr<IDirectReportChannel>* chan) {
+    int channelId = manager.createDirectChannel(size, type, handle);
+    if (channelId < 0) {
+        return convertResult(channelId);
+    }
+    if (channelId == 0) {
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_UNKNOWN_ERROR);
+    }
+    *chan = ndk::SharedRefBase::make<DirectReportChannel>(manager, channelId);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus SensorManagerAidl::createAshmemDirectChannel(
+        const Ashmem& in_mem, int64_t in_size,
+        std::shared_ptr<IDirectReportChannel>* _aidl_return) {
+    if (in_size > in_mem.size || in_size < ISensors::DIRECT_REPORT_SENSOR_EVENT_TOTAL_LENGTH) {
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_BAD_VALUE);
+    }
+    native_handle_t* handle = native_handle_create(1, 0);
+    handle->data[0] = dup(in_mem.fd.get());
+
+    auto status = createDirectChannel(getInternalManager(), in_size, SENSOR_DIRECT_MEM_TYPE_ASHMEM,
+                                      handle, _aidl_return);
+    int result = native_handle_close(handle);
+    CHECK(result == 0) << "Failed to close the native_handle_t: " << result;
+    result = native_handle_delete(handle);
+    CHECK(result == 0) << "Failed to delete the native_handle_t: " << result;
+
+    return status;
+}
+
+ndk::ScopedAStatus SensorManagerAidl::createGrallocDirectChannel(
+        const ndk::ScopedFileDescriptor& in_mem, int64_t in_size,
+        std::shared_ptr<IDirectReportChannel>* _aidl_return) {
+    native_handle_t* handle = native_handle_create(1, 0);
+    handle->data[0] = dup(in_mem.get());
+
+    auto status = createDirectChannel(getInternalManager(), in_size, SENSOR_DIRECT_MEM_TYPE_GRALLOC,
+                                      handle, _aidl_return);
+    int result = native_handle_close(handle);
+    CHECK(result == 0) << "Failed to close the native_handle_t: " << result;
+    result = native_handle_delete(handle);
+    CHECK(result == 0) << "Failed to delete the native_handle_t: " << result;
+
+    return status;
+}
+
+ndk::ScopedAStatus SensorManagerAidl::createEventQueue(
+        const std::shared_ptr<IEventQueueCallback>& in_callback,
+        std::shared_ptr<IEventQueue>* _aidl_return) {
+    if (in_callback == nullptr) {
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_BAD_VALUE);
+    }
+
+    sp<::android::Looper> looper = getLooper();
+    if (looper == nullptr) {
+        LOG(ERROR) << "::android::SensorManagerAidl::createEventQueue cannot initialize looper";
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_UNKNOWN_ERROR);
+    }
+
+    String8 package(String8::format("aidl_client_pid_%d", AIBinder_getCallingPid()));
+    sp<::android::SensorEventQueue> internalQueue = getInternalManager().createEventQueue(package);
+    if (internalQueue == nullptr) {
+        LOG(ERROR) << "::android::SensorManagerAidl::createEventQueue returns nullptr.";
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_UNKNOWN_ERROR);
+    }
+
+    *_aidl_return = ndk::SharedRefBase::make<EventQueue>(in_callback, looper, internalQueue);
+
+    return ndk::ScopedAStatus::ok();
+}
+
+SensorInfo convertSensor(Sensor src) {
+    SensorInfo dst;
+    dst.sensorHandle = src.getHandle();
+    dst.name = src.getName();
+    dst.vendor = src.getVendor();
+    dst.version = src.getVersion();
+    dst.type = static_cast<SensorType>(src.getType());
+    dst.typeAsString = src.getStringType();
+    // maxRange uses maxValue because ::android::Sensor wraps the
+    // internal sensor_t in this way.
+    dst.maxRange = src.getMaxValue();
+    dst.resolution = src.getResolution();
+    dst.power = src.getPowerUsage();
+    dst.minDelayUs = src.getMinDelay();
+    dst.fifoReservedEventCount = src.getFifoReservedEventCount();
+    dst.fifoMaxEventCount = src.getFifoMaxEventCount();
+    dst.requiredPermission = src.getRequiredPermission();
+    dst.maxDelayUs = src.getMaxDelay();
+    dst.flags = src.getFlags();
+    return dst;
+}
+
+ndk::ScopedAStatus SensorManagerAidl::getDefaultSensor(SensorType in_type,
+                                                       SensorInfo* _aidl_return) {
+    ::android::Sensor const* sensor =
+            getInternalManager().getDefaultSensor(static_cast<int>(in_type));
+    if (!sensor) {
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_NOT_EXIST);
+    }
+    *_aidl_return = convertSensor(*sensor);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus SensorManagerAidl::getSensorList(std::vector<SensorInfo>* _aidl_return) {
+    Sensor const* const* list;
+    _aidl_return->clear();
+    ssize_t count = getInternalManager().getSensorList(&list);
+    if (count < 0 || list == nullptr) {
+        LOG(ERROR) << "SensorMAanger::getSensorList failed with count: " << count;
+        return ndk::ScopedAStatus::fromServiceSpecificError(ISensorManager::RESULT_UNKNOWN_ERROR);
+    }
+    _aidl_return->reserve(static_cast<size_t>(count));
+    for (ssize_t i = 0; i < count; ++i) {
+        _aidl_return->push_back(convertSensor(*list[i]));
+    }
+
+    return ndk::ScopedAStatus::ok();
+}
+
+::android::SensorManager& SensorManagerAidl::getInternalManager() {
+    std::lock_guard<std::mutex> lock(mInternalManagerMutex);
+    if (mInternalManager == nullptr) {
+        mInternalManager = &::android::SensorManager::getInstanceForPackage(
+                String16(ISensorManager::descriptor));
+    }
+    return *mInternalManager;
+}
+
+/* One global looper for all event queues created from this SensorManager. */
+sp<Looper> SensorManagerAidl::getLooper() {
+    std::lock_guard<std::mutex> lock(mThreadMutex);
+
+    if (!mPollThread.joinable()) {
+        // if thread not initialized, start thread
+        mStopThread = false;
+        std::thread pollThread{[&stopThread = mStopThread, looper = mLooper, javaVm = mJavaVm] {
+            struct sched_param p = {};
+            p.sched_priority = 10;
+            if (sched_setscheduler(0 /* current thread*/, SCHED_FIFO, &p) != 0) {
+                LOG(ERROR) << "Could not use SCHED_FIFO for looper thread: " << strerror(errno);
+            }
+
+            // set looper
+            Looper::setForThread(looper);
+
+            // Attach the thread to JavaVM so that pollAll do not crash if the thread
+            // eventually calls into Java.
+            JavaVMAttachArgs args{.version = JNI_VERSION_1_2,
+                                  .name = POLL_THREAD_NAME,
+                                  .group = nullptr};
+            JNIEnv* env;
+            if (javaVm->AttachCurrentThread(&env, &args) != JNI_OK) {
+                LOG(FATAL) << "Cannot attach SensorManager looper thread to Java VM.";
+            }
+
+            LOG(INFO) << POLL_THREAD_NAME << " started.";
+            for (;;) {
+                int pollResult = looper->pollAll(-1 /* timeout */);
+                if (pollResult == Looper::POLL_WAKE) {
+                    if (stopThread == true) {
+                        LOG(INFO) << POLL_THREAD_NAME << ": requested to stop";
+                        break;
+                    } else {
+                        LOG(INFO) << POLL_THREAD_NAME << ": spurious wake up, back to work";
+                    }
+                } else {
+                    LOG(ERROR) << POLL_THREAD_NAME << ": Looper::pollAll returns unexpected "
+                               << pollResult;
+                    break;
+                }
+            }
+
+            if (javaVm->DetachCurrentThread() != JNI_OK) {
+                LOG(ERROR) << "Cannot detach SensorManager looper thread from Java VM.";
+            }
+
+            LOG(INFO) << POLL_THREAD_NAME << " is terminated.";
+        }};
+        mPollThread = std::move(pollThread);
+    }
+    return mLooper;
+}
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/fuzzer/Android.bp b/services/sensorservice/aidl/fuzzer/Android.bp
new file mode 100644
index 0000000..0d6e476
--- /dev/null
+++ b/services/sensorservice/aidl/fuzzer/Android.bp
@@ -0,0 +1,52 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "frameworks_native_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["frameworks_native_license"],
+}
+
+cc_fuzz {
+    name: "libsensorserviceaidl_fuzzer",
+    defaults: [
+        "service_fuzzer_defaults",
+    ],
+    host_supported: true,
+    static_libs: [
+        "libsensorserviceaidl",
+        "libpermission",
+        "android.frameworks.sensorservice-V1-ndk",
+        "android.hardware.sensors-V1-convert",
+        "android.hardware.sensors-V1-ndk",
+        "android.hardware.common-V2-ndk",
+        "libsensor",
+        "libfakeservicemanager",
+        "libcutils",
+        "liblog",
+    ],
+    srcs: [
+        "fuzzer.cpp",
+    ],
+    fuzz_config: {
+        cc: [
+            "android-sensors@google.com",
+            "devinmoore@google.com",
+        ],
+    },
+    sanitize: {
+        misc_undefined: [
+            "signed-integer-overflow",
+            "unsigned-integer-overflow",
+        ],
+        diag: {
+            misc_undefined: [
+                "signed-integer-overflow",
+                "unsigned-integer-overflow",
+            ],
+        },
+        address: true,
+        integer_overflow: true,
+    },
+
+}
diff --git a/services/sensorservice/aidl/fuzzer/fuzzer.cpp b/services/sensorservice/aidl/fuzzer/fuzzer.cpp
new file mode 100644
index 0000000..1b63d76
--- /dev/null
+++ b/services/sensorservice/aidl/fuzzer/fuzzer.cpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2022 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 <fuzzbinder/libbinder_ndk_driver.h>
+#include <fuzzer/FuzzedDataProvider.h>
+
+#include <ServiceManager.h>
+#include <android-base/logging.h>
+#include <android/binder_interface_utils.h>
+#include <fuzzbinder/random_binder.h>
+#include <sensorserviceaidl/SensorManagerAidl.h>
+
+using android::fuzzService;
+using android::frameworks::sensorservice::implementation::SensorManagerAidl;
+using ndk::SharedRefBase;
+
+[[clang::no_destroy]] static std::once_flag gSmOnce;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    static android::sp<android::ServiceManager> fakeServiceManager = new android::ServiceManager();
+    std::call_once(gSmOnce, [&] { setDefaultServiceManager(fakeServiceManager); });
+    fakeServiceManager->clear();
+
+    FuzzedDataProvider fdp(data, size);
+    android::sp<android::IBinder> binder = android::getRandomBinder(&fdp);
+    if (binder == nullptr) {
+        // Nothing to do if we get a null binder. It will cause SensorManager to
+        // hang while trying to get sensorservice.
+        return 0;
+    }
+
+    CHECK(android::NO_ERROR == fakeServiceManager->addService(android::String16("sensorservice"),
+                                   binder));
+
+    std::shared_ptr<SensorManagerAidl> sensorService =
+            ndk::SharedRefBase::make<SensorManagerAidl>(nullptr);
+
+    fuzzService(sensorService->asBinder().get(), std::move(fdp));
+
+    return 0;
+}
diff --git a/services/sensorservice/aidl/include/sensorserviceaidl/SensorManagerAidl.h b/services/sensorservice/aidl/include/sensorserviceaidl/SensorManagerAidl.h
new file mode 100644
index 0000000..c77ee88
--- /dev/null
+++ b/services/sensorservice/aidl/include/sensorserviceaidl/SensorManagerAidl.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2022 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/frameworks/sensorservice/BnSensorManager.h>
+#include <jni.h>
+#include <sensor/SensorManager.h>
+#include <utils/Looper.h>
+#include <mutex>
+#include <thread>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+class SensorManagerAidl : public ::aidl::android::frameworks::sensorservice::BnSensorManager {
+public:
+    explicit SensorManagerAidl(JavaVM* vm);
+    ~SensorManagerAidl();
+
+    ::ndk::ScopedAStatus createAshmemDirectChannel(
+            const ::aidl::android::hardware::common::Ashmem& in_mem, int64_t in_size,
+            std::shared_ptr<::aidl::android::frameworks::sensorservice::IDirectReportChannel>*
+                    _aidl_return) override;
+    ::ndk::ScopedAStatus createEventQueue(
+            const std::shared_ptr<::aidl::android::frameworks::sensorservice::IEventQueueCallback>&
+                    in_callback,
+            std::shared_ptr<::aidl::android::frameworks::sensorservice::IEventQueue>* _aidl_return)
+            override;
+    ::ndk::ScopedAStatus createGrallocDirectChannel(
+            const ::ndk::ScopedFileDescriptor& in_buffer, int64_t in_size,
+            std::shared_ptr<::aidl::android::frameworks::sensorservice::IDirectReportChannel>*
+                    _aidl_return) override;
+    ::ndk::ScopedAStatus getDefaultSensor(
+            ::aidl::android::hardware::sensors::SensorType in_type,
+            ::aidl::android::hardware::sensors::SensorInfo* _aidl_return) override;
+    ::ndk::ScopedAStatus getSensorList(
+            std::vector<::aidl::android::hardware::sensors::SensorInfo>* _aidl_return) override;
+
+private:
+    // Block until ::android::SensorManager is initialized.
+    ::android::SensorManager& getInternalManager();
+    sp<Looper> getLooper();
+
+    std::mutex mInternalManagerMutex;
+    ::android::SensorManager* mInternalManager = nullptr; // does not own
+    sp<Looper> mLooper;
+
+    volatile bool mStopThread;
+    std::mutex mThreadMutex; // protects mPollThread
+    std::thread mPollThread;
+
+    JavaVM* mJavaVm;
+};
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/utils.cpp b/services/sensorservice/aidl/utils.cpp
new file mode 100644
index 0000000..beb38b9
--- /dev/null
+++ b/services/sensorservice/aidl/utils.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2022 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 <aidl/android/frameworks/sensorservice/ISensorManager.h>
+#include <aidl/sensors/convert.h>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+ndk::ScopedAStatus convertResult(status_t src) {
+    using ::aidl::android::frameworks::sensorservice::ISensorManager;
+
+    int err = 0;
+    switch (src) {
+        case OK:
+            return ndk::ScopedAStatus::ok();
+        case NAME_NOT_FOUND:
+            err = ISensorManager::RESULT_NOT_EXIST;
+            break;
+        case NO_MEMORY:
+            err = ISensorManager::RESULT_NO_MEMORY;
+            break;
+        case NO_INIT:
+            err = ISensorManager::RESULT_NO_INIT;
+            break;
+        case PERMISSION_DENIED:
+            err = ISensorManager::RESULT_PERMISSION_DENIED;
+            break;
+        case BAD_VALUE:
+            err = ISensorManager::RESULT_BAD_VALUE;
+            break;
+        case INVALID_OPERATION:
+            err = ISensorManager::RESULT_INVALID_OPERATION;
+            break;
+        default:
+            err = ISensorManager::RESULT_UNKNOWN_ERROR;
+    }
+    return ndk::ScopedAStatus::fromServiceSpecificError(err);
+}
+
+::aidl::android::hardware::sensors::Event convertEvent(const ::ASensorEvent& src) {
+    ::aidl::android::hardware::sensors::Event dst;
+    ::android::hardware::sensors::implementation::
+            convertFromASensorEvent(src, &dst);
+    return dst;
+}
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/aidl/utils.h b/services/sensorservice/aidl/utils.h
new file mode 100644
index 0000000..06ba59e
--- /dev/null
+++ b/services/sensorservice/aidl/utils.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2022 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/sensors/Event.h>
+#include <sensor/Sensor.h>
+
+namespace android {
+namespace frameworks {
+namespace sensorservice {
+namespace implementation {
+
+::ndk::ScopedAStatus convertResult(status_t status);
+::aidl::android::hardware::sensors::Event convertEvent(const ::ASensorEvent& event);
+
+} // namespace implementation
+} // namespace sensorservice
+} // namespace frameworks
+} // namespace android
diff --git a/services/sensorservice/hidl/utils.cpp b/services/sensorservice/hidl/utils.cpp
index 2f9e922..5fa594d 100644
--- a/services/sensorservice/hidl/utils.cpp
+++ b/services/sensorservice/hidl/utils.cpp
@@ -76,8 +76,8 @@
 
 ::android::hardware::sensors::V1_0::Event convertEvent(const ::ASensorEvent& src) {
     ::android::hardware::sensors::V1_0::Event dst;
-    ::android::hardware::sensors::V1_0::implementation::convertFromSensorEvent(
-            reinterpret_cast<const sensors_event_t&>(src), &dst);
+    ::android::hardware::sensors::V1_0::implementation::convertFromASensorEvent(
+            src, &dst);
     return dst;
 }
 
diff --git a/services/stats/Android.bp b/services/stats/Android.bp
index 7fea616..7d358e1 100644
--- a/services/stats/Android.bp
+++ b/services/stats/Android.bp
@@ -13,10 +13,13 @@
         "StatsAidl.cpp",
         "StatsHal.cpp",
     ],
-    cflags: ["-Wall", "-Werror"],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
     shared_libs: [
         "android.frameworks.stats@1.0",
-        "android.frameworks.stats-V1-ndk",
+        "android.frameworks.stats-V2-ndk",
         "libbinder_ndk",
         "libhidlbase",
         "liblog",
@@ -29,10 +32,12 @@
     ],
     export_shared_lib_headers: [
         "android.frameworks.stats@1.0",
-        "android.frameworks.stats-V1-ndk",
+        "android.frameworks.stats-V2-ndk",
     ],
     local_include_dirs: [
         "include/stats",
     ],
-    vintf_fragments: ["android.frameworks.stats@1.0-service.xml"]
+    vintf_fragments: [
+        "android.frameworks.stats-service.xml",
+    ],
 }
diff --git a/services/stats/StatsAidl.cpp b/services/stats/StatsAidl.cpp
index a3b68f1..fe28454 100644
--- a/services/stats/StatsAidl.cpp
+++ b/services/stats/StatsAidl.cpp
@@ -30,14 +30,14 @@
 StatsHal::StatsHal() {}
 
 ndk::ScopedAStatus StatsHal::reportVendorAtom(const VendorAtom& vendorAtom) {
-    std::string reverseDomainName = (std::string) vendorAtom.reverseDomainName;
     if (vendorAtom.atomId < 100000 || vendorAtom.atomId >= 200000) {
         ALOGE("Atom ID %ld is not a valid vendor atom ID", (long) vendorAtom.atomId);
         return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
             -1, "Not a valid vendor atom ID");
     }
-    if (reverseDomainName.length() > 50) {
-        ALOGE("Vendor atom reverse domain name %s is too long.", reverseDomainName.c_str());
+    if (vendorAtom.reverseDomainName.length() > 50) {
+        ALOGE("Vendor atom reverse domain name %s is too long.",
+            vendorAtom.reverseDomainName.c_str());
         return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
             -1, "Vendor atom reverse domain name is too long");
     }
@@ -62,6 +62,65 @@
                 AStatsEvent_writeString(event,
                     atomValue.get<VendorAtomValue::stringValue>().c_str());
                 break;
+            case VendorAtomValue::boolValue:
+                AStatsEvent_writeBool(event,
+                    atomValue.get<VendorAtomValue::boolValue>());
+                break;
+            case VendorAtomValue::repeatedIntValue: {
+                const std::optional<std::vector<int>>& repeatedIntValue =
+                        atomValue.get<VendorAtomValue::repeatedIntValue>();
+                AStatsEvent_writeInt32Array(event, repeatedIntValue->data(),
+                                            repeatedIntValue->size());
+                break;
+            }
+            case VendorAtomValue::repeatedLongValue: {
+                const std::optional<std::vector<int64_t>>& repeatedLongValue =
+                        atomValue.get<VendorAtomValue::repeatedLongValue>();
+                AStatsEvent_writeInt64Array(event, repeatedLongValue->data(),
+                                            repeatedLongValue->size());
+                break;
+            }
+            case VendorAtomValue::repeatedFloatValue: {
+                const std::optional<std::vector<float>>& repeatedFloatValue =
+                        atomValue.get<VendorAtomValue::repeatedFloatValue>();
+                AStatsEvent_writeFloatArray(event, repeatedFloatValue->data(),
+                                            repeatedFloatValue->size());
+                break;
+            }
+            case VendorAtomValue::repeatedStringValue: {
+                const std::optional<std::vector<std::optional<std::string>>>& repeatedStringValue =
+                        atomValue.get<VendorAtomValue::repeatedStringValue>();
+                const std::vector<std::optional<std::string>>& repeatedStringVector =
+                        *repeatedStringValue;
+                const char* cStringArray[repeatedStringVector.size()];
+
+                for (int i = 0; i < repeatedStringVector.size(); ++i) {
+                    cStringArray[i] = repeatedStringVector[i]->c_str();
+                }
+
+                AStatsEvent_writeStringArray(event, cStringArray, repeatedStringVector.size());
+                break;
+            }
+            case VendorAtomValue::repeatedBoolValue: {
+                const std::optional<std::vector<bool>>& repeatedBoolValue =
+                        atomValue.get<VendorAtomValue::repeatedBoolValue>();
+                const std::vector<bool>& repeatedBoolVector = *repeatedBoolValue;
+                bool boolArray[repeatedBoolValue->size()];
+
+                for (int i = 0; i < repeatedBoolVector.size(); ++i) {
+                    boolArray[i] = repeatedBoolVector[i];
+                }
+
+                AStatsEvent_writeBoolArray(event, boolArray, repeatedBoolVector.size());
+                break;
+            }
+            case VendorAtomValue::byteArrayValue: {
+                const std::optional<std::vector<uint8_t>>& byteArrayValue =
+                        atomValue.get<VendorAtomValue::byteArrayValue>();
+
+                AStatsEvent_writeByteArray(event, byteArrayValue->data(), byteArrayValue->size());
+                break;
+            }
         }
     }
     AStatsEvent_build(event);
diff --git a/services/stats/StatsHal.cpp b/services/stats/StatsHal.cpp
index ae0a984..d27d989 100644
--- a/services/stats/StatsHal.cpp
+++ b/services/stats/StatsHal.cpp
@@ -112,13 +112,13 @@
 }
 
 hardware::Return<void> StatsHal::reportVendorAtom(const VendorAtom& vendorAtom) {
-    std::string reverseDomainName = (std::string) vendorAtom.reverseDomainName;
     if (vendorAtom.atomId < 100000 || vendorAtom.atomId >= 200000) {
         ALOGE("Atom ID %ld is not a valid vendor atom ID", (long) vendorAtom.atomId);
         return hardware::Void();
     }
-    if (reverseDomainName.length() > 50) {
-        ALOGE("Vendor atom reverse domain name %s is too long.", reverseDomainName.c_str());
+    if (vendorAtom.reverseDomainName.size() > 50) {
+        ALOGE("Vendor atom reverse domain name %s is too long.",
+              vendorAtom.reverseDomainName.c_str());
         return hardware::Void();
     }
     AStatsEvent* event = AStatsEvent_obtain();
diff --git a/services/stats/android.frameworks.stats@1.0-service.xml b/services/stats/android.frameworks.stats-service.xml
similarity index 93%
rename from services/stats/android.frameworks.stats@1.0-service.xml
rename to services/stats/android.frameworks.stats-service.xml
index c564b7b..7e2635e 100644
--- a/services/stats/android.frameworks.stats@1.0-service.xml
+++ b/services/stats/android.frameworks.stats-service.xml
@@ -11,7 +11,7 @@
 
     <hal format="aidl">
         <name>android.frameworks.stats</name>
-        <version>1</version>
+        <version>2</version>
         <fqname>IStats/default</fqname>
     </hal>
 </manifest>
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h
index 16cb41b..5e84be1 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Display.h
@@ -56,6 +56,9 @@
     // similar requests if needed.
     virtual void createClientCompositionCache(uint32_t cacheSize) = 0;
 
+    // Sends the brightness setting to HWC
+    virtual void applyDisplayBrightness(const bool applyImmediately) = 0;
+
 protected:
     ~Display() = default;
 };
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
index db2fd1b..2203639 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
@@ -27,6 +27,7 @@
 #include <compositionengine/LayerFE.h>
 #include <renderengine/LayerSettings.h>
 #include <ui/Fence.h>
+#include <ui/FenceTime.h>
 #include <ui/GraphicTypes.h>
 #include <ui/LayerStack.h>
 #include <ui/Region.h>
@@ -311,6 +312,8 @@
             const Region& flashRegion,
             std::vector<LayerFE::LayerSettings>& clientCompositionLayers) = 0;
     virtual void setExpensiveRenderingExpected(bool enabled) = 0;
+    virtual void setHintSessionGpuFence(std::unique_ptr<FenceTime>&& gpuFence) = 0;
+    virtual bool isPowerHintSessionEnabled() = 0;
     virtual void cacheClientCompositionRequests(uint32_t cacheSize) = 0;
     virtual bool canPredictCompositionStrategy(const CompositionRefreshArgs&) = 0;
 };
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
index 61a0e6a..33a10a3 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
@@ -72,6 +72,7 @@
             const compositionengine::DisplayColorProfileCreationArgs&) override;
     void createRenderSurface(const compositionengine::RenderSurfaceCreationArgs&) override;
     void createClientCompositionCache(uint32_t cacheSize) override;
+    void applyDisplayBrightness(const bool applyImmediately) override;
 
     // Internal helpers used by chooseCompositionStrategy()
     using ChangedTypes = android::HWComposer::DeviceRequestedChanges::ChangedTypes;
@@ -89,6 +90,8 @@
     std::unique_ptr<compositionengine::OutputLayer> createOutputLayer(const sp<LayerFE>&) const;
 
 private:
+    bool isPowerHintSessionEnabled() override;
+    void setHintSessionGpuFence(std::unique_ptr<FenceTime>&& gpuFence) override;
     DisplayId mId;
     bool mIsDisconnected = false;
     Hwc2::PowerAdvisor* mPowerAdvisor = nullptr;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
index 31c51e6..df721cd 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
@@ -140,6 +140,8 @@
           std::vector<LayerFE*> &outLayerFEs) override;
     void appendRegionFlashRequests(const Region&, std::vector<LayerFE::LayerSettings>&) override;
     void setExpensiveRenderingExpected(bool enabled) override;
+    void setHintSessionGpuFence(std::unique_ptr<FenceTime>&& gpuFence) override;
+    bool isPowerHintSessionEnabled() override;
     void dumpBase(std::string&) const;
 
     // Implemented by the final implementation for the final state it uses.
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h
index 2bfd3cf..24a7744 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/CachedSet.h
@@ -115,7 +115,7 @@
 
     // Renders the cached set with the supplied output composition state.
     void render(renderengine::RenderEngine& re, TexturePool& texturePool,
-                const OutputCompositionState& outputState);
+                const OutputCompositionState& outputState, bool deviceHandlesColorTransform);
 
     void dump(std::string& result) const;
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Flattener.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Flattener.h
index 92cc484..f934cb2 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Flattener.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Flattener.h
@@ -106,7 +106,8 @@
 
     // Renders the newest cached sets with the supplied output composition state
     void renderCachedSets(const OutputCompositionState& outputState,
-                          std::optional<std::chrono::steady_clock::time_point> renderDeadline);
+                          std::optional<std::chrono::steady_clock::time_point> renderDeadline,
+                          bool deviceHandlesColorTransform);
 
     void setTexturePoolEnabled(bool enabled) { mTexturePool.setEnabled(enabled); }
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Planner.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Planner.h
index b7ebca6..c968df7 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Planner.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/planner/Planner.h
@@ -65,7 +65,8 @@
     // Rendering a pending cached set is optional: if the renderDeadline is not far enough in the
     // future then the planner may opt to skip rendering the cached set.
     void renderCachedSets(const OutputCompositionState& outputState,
-                          std::optional<std::chrono::steady_clock::time_point> renderDeadline);
+                          std::optional<std::chrono::steady_clock::time_point> renderDeadline,
+                          bool deviceHandlesColorTransform);
 
     void setTexturePoolEnabled(bool enabled) { mFlattener.setTexturePoolEnabled(enabled); }
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h
index 72e6f3b..7e99ec2 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Display.h
@@ -41,6 +41,7 @@
     MOCK_METHOD1(createDisplayColorProfile, void(const DisplayColorProfileCreationArgs&));
     MOCK_METHOD1(createRenderSurface, void(const RenderSurfaceCreationArgs&));
     MOCK_METHOD1(createClientCompositionCache, void(uint32_t));
+    MOCK_METHOD1(applyDisplayBrightness, void(const bool));
     MOCK_METHOD1(setPredictCompositionStrategy, void(bool));
 };
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
index cb9fbad..2a04949 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
@@ -133,6 +133,8 @@
     MOCK_METHOD1(canPredictCompositionStrategy, bool(const CompositionRefreshArgs&));
     MOCK_METHOD1(setPredictCompositionStrategy, void(bool));
     MOCK_METHOD1(setTreat170mAsSrgb, void(bool));
+    MOCK_METHOD(void, setHintSessionGpuFence, (std::unique_ptr<FenceTime> && gpuFence));
+    MOCK_METHOD(bool, isPowerHintSessionEnabled, ());
 };
 
 } // namespace android::compositionengine::mock
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index b79b46b..1ec6449 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -203,6 +203,24 @@
     setReleasedLayers(std::move(releasedLayers));
 }
 
+void Display::applyDisplayBrightness(const bool applyImmediately) {
+    auto& hwc = getCompositionEngine().getHwComposer();
+    const auto halDisplayId = HalDisplayId::tryCast(*getDisplayId());
+    if (const auto physicalDisplayId = PhysicalDisplayId::tryCast(*halDisplayId);
+        physicalDisplayId && getState().displayBrightness) {
+        const status_t result =
+                hwc.setDisplayBrightness(*physicalDisplayId, *getState().displayBrightness,
+                                         getState().displayBrightnessNits,
+                                         Hwc2::Composer::DisplayBrightnessOptions{
+                                                 .applyImmediately = applyImmediately})
+                        .get();
+        ALOGE_IF(result != NO_ERROR, "setDisplayBrightness failed for %s: %d, (%s)",
+                 getName().c_str(), result, strerror(-result));
+    }
+    // Clear out the display brightness now that it's been communicated to composer.
+    editState().displayBrightness.reset();
+}
+
 void Display::beginFrame() {
     Output::beginFrame();
 
@@ -212,20 +230,7 @@
         return;
     }
 
-    auto& hwc = getCompositionEngine().getHwComposer();
-    if (const auto physicalDisplayId = PhysicalDisplayId::tryCast(*halDisplayId);
-        physicalDisplayId && getState().displayBrightness) {
-        const status_t result =
-                hwc.setDisplayBrightness(*physicalDisplayId, *getState().displayBrightness,
-                                         getState().displayBrightnessNits,
-                                         Hwc2::Composer::DisplayBrightnessOptions{
-                                                 .applyImmediately = false})
-                        .get();
-        ALOGE_IF(result != NO_ERROR, "setDisplayBrightness failed for %s: %d, (%s)",
-                 getName().c_str(), result, strerror(-result));
-    }
-    // Clear out the display brightness now that it's been communicated to composer.
-    editState().displayBrightness.reset();
+    applyDisplayBrightness(false);
 }
 
 bool Display::chooseCompositionStrategy(
@@ -243,11 +248,14 @@
         return false;
     }
 
+    const nsecs_t startTime = systemTime();
+
     // Get any composition changes requested by the HWC device, and apply them.
     std::optional<android::HWComposer::DeviceRequestedChanges> changes;
     auto& hwc = getCompositionEngine().getHwComposer();
+    const bool requiresClientComposition = anyLayersRequireClientComposition();
     if (status_t result =
-                hwc.getDeviceCompositionChanges(*halDisplayId, anyLayersRequireClientComposition(),
+                hwc.getDeviceCompositionChanges(*halDisplayId, requiresClientComposition,
                                                 getState().earliestPresentTime,
                                                 getState().previousPresentFence,
                                                 getState().expectedPresentTime, outChanges);
@@ -257,6 +265,11 @@
         return false;
     }
 
+    if (isPowerHintSessionEnabled()) {
+        mPowerAdvisor->setHwcValidateTiming(mId, startTime, systemTime());
+        mPowerAdvisor->setRequiresClientComposition(mId, requiresClientComposition);
+    }
+
     return true;
 }
 
@@ -356,9 +369,24 @@
     }
 
     auto& hwc = getCompositionEngine().getHwComposer();
+
+    const nsecs_t startTime = systemTime();
+
+    if (isPowerHintSessionEnabled()) {
+        if (!getCompositionEngine().getHwComposer().getComposer()->isSupported(
+                    Hwc2::Composer::OptionalFeature::ExpectedPresentTime) &&
+            getState().previousPresentFence->getSignalTime() != Fence::SIGNAL_TIME_PENDING) {
+            mPowerAdvisor->setHwcPresentDelayedTime(mId, getState().earliestPresentTime);
+        }
+    }
+
     hwc.presentAndGetReleaseFences(*halDisplayIdOpt, getState().earliestPresentTime,
                                    getState().previousPresentFence);
 
+    if (isPowerHintSessionEnabled()) {
+        mPowerAdvisor->setHwcPresentTiming(mId, startTime, systemTime());
+    }
+
     fences.presentFence = hwc.getPresentFence(*halDisplayIdOpt);
 
     // TODO(b/121291683): Change HWComposer call to return entire map
@@ -384,6 +412,14 @@
     }
 }
 
+bool Display::isPowerHintSessionEnabled() {
+    return mPowerAdvisor != nullptr && mPowerAdvisor->usePowerHintSession();
+}
+
+void Display::setHintSessionGpuFence(std::unique_ptr<FenceTime>&& gpuFence) {
+    mPowerAdvisor->setGpuFenceTime(mId, std::move(gpuFence));
+}
+
 void Display::finishFrame(const compositionengine::CompositionRefreshArgs& refreshArgs,
                           GpuCompositionResult&& result) {
     // We only need to actually compose the display if:
@@ -396,6 +432,13 @@
     }
 
     impl::Output::finishFrame(refreshArgs, std::move(result));
+
+    if (isPowerHintSessionEnabled()) {
+        auto& hwc = getCompositionEngine().getHwComposer();
+        if (auto halDisplayId = HalDisplayId::tryCast(mId)) {
+            mPowerAdvisor->setSkippedValidate(mId, hwc.getValidateSkipped(*halDisplayId));
+        }
+    }
 }
 
 } // namespace android::compositionengine::impl
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index c3385a8..b724daa 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -586,8 +586,29 @@
     // Remove the transparent area from the visible region
     if (!layerFEState->isOpaque) {
         if (tr.preserveRects()) {
-            // transform the transparent region
-            transparentRegion = tr.transform(layerFEState->transparentRegionHint);
+            // Clip the transparent region to geomLayerBounds first
+            // The transparent region may be influenced by applications, for
+            // instance, by overriding ViewGroup#gatherTransparentRegion with a
+            // custom view. Once the layer stack -> display mapping is known, we
+            // must guard against very wrong inputs to prevent underflow or
+            // overflow errors. We do this here by constraining the transparent
+            // region to be within the pre-transform layer bounds, since the
+            // layer bounds are expected to play nicely with the full
+            // transform.
+            const Region clippedTransparentRegionHint =
+                    layerFEState->transparentRegionHint.intersect(
+                            Rect(layerFEState->geomLayerBounds));
+
+            if (clippedTransparentRegionHint.isEmpty()) {
+                if (!layerFEState->transparentRegionHint.isEmpty()) {
+                    ALOGD("Layer: %s had an out of bounds transparent region",
+                          layerFE->getDebugName());
+                    layerFEState->transparentRegionHint.dump("transparentRegionHint");
+                }
+                transparentRegion.clear();
+            } else {
+                transparentRegion = tr.transform(clippedTransparentRegionHint);
+            }
         } else {
             // transformation too complex, can't do the
             // transparent region optimization.
@@ -1099,6 +1120,10 @@
         return;
     }
 
+    if (isPowerHintSessionEnabled()) {
+        // get fence end time to know when gpu is complete in display
+        setHintSessionGpuFence(std::make_unique<FenceTime>(new Fence(dup(optReadyFence->get()))));
+    }
     // swap buffers (presentation)
     mRenderSurface->queueBuffer(std::move(*optReadyFence));
 }
@@ -1218,7 +1243,8 @@
             ATRACE_NAME("ClientCompositionCacheHit");
             outputCompositionState.reusedClientComposition = true;
             setExpensiveRenderingExpected(false);
-            return base::unique_fd();
+            // b/239944175 pass the fence associated with the buffer.
+            return base::unique_fd(std::move(fd));
         }
         ATRACE_NAME("ClientCompositionCacheMiss");
         mClientCompositionRequestCache->add(tex->getBuffer()->getId(), clientCompositionDisplay,
@@ -1403,6 +1429,14 @@
     // The base class does nothing with this call.
 }
 
+void Output::setHintSessionGpuFence(std::unique_ptr<FenceTime>&&) {
+    // The base class does nothing with this call.
+}
+
+bool Output::isPowerHintSessionEnabled() {
+    return false;
+}
+
 void Output::postFramebuffer() {
     ATRACE_CALL();
     ALOGV(__FUNCTION__);
@@ -1460,7 +1494,8 @@
 
 void Output::renderCachedSets(const CompositionRefreshArgs& refreshArgs) {
     if (mPlanner) {
-        mPlanner->renderCachedSets(getState(), refreshArgs.scheduledFrameTime);
+        mPlanner->renderCachedSets(getState(), refreshArgs.scheduledFrameTime,
+                                   getState().usesDeviceComposition || getSkipColorTransform());
     }
 }
 
diff --git a/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp b/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
index 641b806..d6f02ee 100644
--- a/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
@@ -159,7 +159,8 @@
 }
 
 void CachedSet::render(renderengine::RenderEngine& renderEngine, TexturePool& texturePool,
-                       const OutputCompositionState& outputState) {
+                       const OutputCompositionState& outputState,
+                       bool deviceHandlesColorTransform) {
     ATRACE_CALL();
     const Rect& viewport = outputState.layerStackSpace.getContent();
     const ui::Dataspace& outputDataspace = outputState.dataspace;
@@ -170,6 +171,8 @@
             .physicalDisplay = outputState.framebufferSpace.getContent(),
             .clip = viewport,
             .outputDataspace = outputDataspace,
+            .colorTransform = outputState.colorTransformMatrix,
+            .deviceHandlesColorTransform = deviceHandlesColorTransform,
             .orientation = orientation,
             .targetLuminanceNits = outputState.displayBrightnessNits,
     };
diff --git a/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp b/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp
index 1062b70..9175dd0 100644
--- a/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/planner/Flattener.cpp
@@ -99,7 +99,8 @@
 
 void Flattener::renderCachedSets(
         const OutputCompositionState& outputState,
-        std::optional<std::chrono::steady_clock::time_point> renderDeadline) {
+        std::optional<std::chrono::steady_clock::time_point> renderDeadline,
+        bool deviceHandlesColorTransform) {
     ATRACE_CALL();
 
     if (!mNewCachedSet) {
@@ -136,7 +137,7 @@
         }
     }
 
-    mNewCachedSet->render(mRenderEngine, mTexturePool, outputState);
+    mNewCachedSet->render(mRenderEngine, mTexturePool, outputState, deviceHandlesColorTransform);
 }
 
 void Flattener::dumpLayers(std::string& result) const {
diff --git a/services/surfaceflinger/CompositionEngine/src/planner/Planner.cpp b/services/surfaceflinger/CompositionEngine/src/planner/Planner.cpp
index c8413eb..54133d9 100644
--- a/services/surfaceflinger/CompositionEngine/src/planner/Planner.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/planner/Planner.cpp
@@ -201,11 +201,11 @@
                             finalPlan);
 }
 
-void Planner::renderCachedSets(
-        const OutputCompositionState& outputState,
-        std::optional<std::chrono::steady_clock::time_point> renderDeadline) {
+void Planner::renderCachedSets(const OutputCompositionState& outputState,
+                               std::optional<std::chrono::steady_clock::time_point> renderDeadline,
+                               bool deviceHandlesColorTransform) {
     ATRACE_CALL();
-    mFlattener.renderCachedSets(outputState, renderDeadline);
+    mFlattener.renderCachedSets(outputState, renderDeadline, deviceHandlesColorTransform);
 }
 
 void Planner::dump(const Vector<String16>& args, std::string& result) {
diff --git a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
index 0e5a7b6..344fea3 100644
--- a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
@@ -169,6 +169,7 @@
         EXPECT_CALL(mCompositionEngine, getRenderEngine()).WillRepeatedly(ReturnRef(mRenderEngine));
         EXPECT_CALL(mRenderEngine, supportsProtectedContent()).WillRepeatedly(Return(false));
         EXPECT_CALL(mRenderEngine, isProtected()).WillRepeatedly(Return(false));
+        EXPECT_CALL(mPowerAdvisor, usePowerHintSession()).WillRepeatedly(Return(false));
     }
 
     DisplayCreationArgs getDisplayCreationArgsForPhysicalDisplay() {
diff --git a/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h b/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
index 9b12b08..d7704a8 100644
--- a/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
+++ b/services/surfaceflinger/CompositionEngine/tests/MockHWComposer.h
@@ -137,6 +137,7 @@
     MOCK_METHOD(bool, hasDisplayIdleTimerCapability, (PhysicalDisplayId), (const, override));
     MOCK_METHOD(Hwc2::AidlTransform, getPhysicalDisplayOrientation, (PhysicalDisplayId),
                 (const, override));
+    MOCK_METHOD(bool, getValidateSkipped, (HalDisplayId), (const, override));
 };
 
 } // namespace mock
diff --git a/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h b/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h
index 50adcfb..c8bd5e4 100644
--- a/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h
+++ b/services/surfaceflinger/CompositionEngine/tests/MockPowerAdvisor.h
@@ -38,11 +38,33 @@
     MOCK_METHOD(bool, usePowerHintSession, (), (override));
     MOCK_METHOD(bool, supportsPowerHintSession, (), (override));
     MOCK_METHOD(bool, isPowerHintSessionRunning, (), (override));
-    MOCK_METHOD(void, setTargetWorkDuration, (int64_t targetDurationNanos), (override));
-    MOCK_METHOD(void, sendActualWorkDuration, (int64_t actualDurationNanos, nsecs_t timestamp),
-                (override));
+    MOCK_METHOD(void, setTargetWorkDuration, (int64_t targetDuration), (override));
+    MOCK_METHOD(void, sendActualWorkDuration, (), (override));
+    MOCK_METHOD(void, sendPredictedWorkDuration, (), (override));
     MOCK_METHOD(void, enablePowerHint, (bool enabled), (override));
     MOCK_METHOD(bool, startPowerHintSession, (const std::vector<int32_t>& threadIds), (override));
+    MOCK_METHOD(void, setGpuFenceTime,
+                (DisplayId displayId, std::unique_ptr<FenceTime>&& fenceTime), (override));
+    MOCK_METHOD(void, setHwcValidateTiming,
+                (DisplayId displayId, nsecs_t valiateStartTime, nsecs_t validateEndTime),
+                (override));
+    MOCK_METHOD(void, setHwcPresentTiming,
+                (DisplayId displayId, nsecs_t presentStartTime, nsecs_t presentEndTime),
+                (override));
+    MOCK_METHOD(void, setSkippedValidate, (DisplayId displayId, bool skipped), (override));
+    MOCK_METHOD(void, setRequiresClientComposition,
+                (DisplayId displayId, bool requiresClientComposition), (override));
+    MOCK_METHOD(void, setExpectedPresentTime, (nsecs_t expectedPresentTime), (override));
+    MOCK_METHOD(void, setSfPresentTiming, (nsecs_t presentFenceTime, nsecs_t presentEndTime),
+                (override));
+    MOCK_METHOD(void, setHwcPresentDelayedTime,
+                (DisplayId displayId,
+                 std::chrono::steady_clock::time_point earliestFrameStartTime));
+    MOCK_METHOD(void, setFrameDelay, (nsecs_t frameDelayDuration), (override));
+    MOCK_METHOD(void, setCommitStart, (nsecs_t commitStartTime), (override));
+    MOCK_METHOD(void, setCompositeEnd, (nsecs_t compositeEndtime), (override));
+    MOCK_METHOD(void, setDisplays, (std::vector<DisplayId> & displayIds), (override));
+    MOCK_METHOD(void, setTotalFrameTargetWorkDuration, (int64_t targetDuration), (override));
 };
 
 } // namespace mock
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
index 063726b..cf12890 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
@@ -1505,6 +1505,8 @@
     static const Region kTransparentRegionHint;
     static const Region kTransparentRegionHintTwo;
     static const Region kTransparentRegionHintTwo90Rotation;
+    static const Region kTransparentRegionHintNegative;
+    static const Region kTransparentRegionHintNegativeIntersectsBounds;
 
     StrictMock<OutputPartialMock> mOutput;
     LayerFESet mGeomSnapshots;
@@ -1528,6 +1530,10 @@
         Region(Rect(25, 20, 50, 75));
 const Region OutputEnsureOutputLayerIfVisibleTest::kTransparentRegionHintTwo90Rotation =
         Region(Rect(125, 25, 180, 50));
+const Region OutputEnsureOutputLayerIfVisibleTest::kTransparentRegionHintNegative =
+        Region(Rect(INT32_MIN, INT32_MIN, INT32_MIN + 100, INT32_MIN + 200));
+const Region OutputEnsureOutputLayerIfVisibleTest::kTransparentRegionHintNegativeIntersectsBounds =
+        Region(Rect(INT32_MIN, INT32_MIN, 100, 100));
 
 TEST_F(OutputEnsureOutputLayerIfVisibleTest, performsGeomLatchBeforeCheckingIfLayerIncluded) {
     EXPECT_CALL(mOutput, includesLayer(sp<LayerFE>(mLayer.layerFE))).WillOnce(Return(false));
@@ -1997,6 +2003,41 @@
                 RegionEq(kTransparentRegionHintTwo90Rotation));
 }
 
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, transparentRegionExcludesOutputLayer) {
+    mLayer.layerFEState.isOpaque = false;
+    mLayer.layerFEState.contentDirty = true;
+    mLayer.layerFEState.geomLayerBounds = kFullBoundsNoRotation.bounds().toFloatRect();
+    mLayer.layerFEState.transparentRegionHint = kFullBoundsNoRotation;
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(_, _)).Times(0);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, transparentRegionIgnoredWhenOutsideBounds) {
+    mLayer.layerFEState.isOpaque = false;
+    mLayer.layerFEState.contentDirty = true;
+    mLayer.layerFEState.geomLayerBounds = kFullBoundsNoRotation.bounds().toFloatRect();
+    mLayer.layerFEState.transparentRegionHint = kTransparentRegionHintNegative;
+
+    EXPECT_CALL(mOutput, ensureOutputLayer(_, _)).Times(0);
+}
+
+TEST_F(OutputEnsureOutputLayerIfVisibleTest, transparentRegionClipsWhenOutsideBounds) {
+    mLayer.layerFEState.isOpaque = false;
+    mLayer.layerFEState.contentDirty = true;
+    mLayer.layerFEState.compositionType =
+            aidl::android::hardware::graphics::composer3::Composition::DISPLAY_DECORATION;
+    mLayer.layerFEState.transparentRegionHint = kTransparentRegionHintNegativeIntersectsBounds;
+
+    EXPECT_CALL(mOutput, getOutputLayerCount()).WillOnce(Return(0u));
+    EXPECT_CALL(mOutput, ensureOutputLayer(Eq(std::nullopt), Eq(mLayer.layerFE)))
+            .WillOnce(Return(&mLayer.outputLayer));
+    ensureOutputLayerIfVisible();
+
+    // Check that the blocking region clips an out-of-bounds transparent region.
+    EXPECT_THAT(mLayer.outputLayerState.outputSpaceBlockingRegionHint,
+                RegionEq(kTransparentRegionHint));
+}
+
 /*
  * Output::present()
  */
@@ -3319,6 +3360,9 @@
         MOCK_METHOD2(appendRegionFlashRequests,
                      void(const Region&, std::vector<LayerFE::LayerSettings>&));
         MOCK_METHOD1(setExpensiveRenderingExpected, void(bool));
+        MOCK_METHOD(void, setHintSessionGpuFence, (std::unique_ptr<FenceTime> && gpuFence),
+                    (override));
+        MOCK_METHOD(bool, isPowerHintSessionEnabled, (), (override));
     };
 
     OutputComposeSurfacesTest() {
diff --git a/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp b/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp
index 8a99e4e..0e9db36 100644
--- a/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp
@@ -376,7 +376,7 @@
             .WillOnce(Return(clientCompList2));
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
     mOutputState.isSecure = false;
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
     expectReadyBuffer(cachedSet);
 
     EXPECT_EQ(mOutputState.framebufferSpace, cachedSet.getOutputSpace());
@@ -429,7 +429,7 @@
             .WillOnce(Return(clientCompList2));
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
     mOutputState.isSecure = true;
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
     expectReadyBuffer(cachedSet);
 
     EXPECT_EQ(mOutputState.framebufferSpace, cachedSet.getOutputSpace());
@@ -477,7 +477,58 @@
             .WillOnce(Return(clientCompList2));
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
     mOutputState.isSecure = true;
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
+    expectReadyBuffer(cachedSet);
+
+    EXPECT_EQ(mOutputState.framebufferSpace, cachedSet.getOutputSpace());
+    EXPECT_EQ(Rect(kOutputSize.width, kOutputSize.height), cachedSet.getTextureBounds());
+
+    // Now check that appending a new cached set properly cleans up RenderEngine resources.
+    CachedSet::Layer& layer3 = *mTestLayers[2]->cachedSetLayer.get();
+    cachedSet.append(CachedSet(layer3));
+}
+
+TEST_F(CachedSetTest, renderWhitePointNoColorTransform) {
+    // Skip the 0th layer to ensure that the bounding box of the layers is offset from (0, 0)
+    // This is a duplicate of the "renderWhitePoint" test, but setting "deviceHandlesColorTransform"
+    // to false, in the render call.
+
+    CachedSet::Layer& layer1 = *mTestLayers[1]->cachedSetLayer.get();
+    sp<mock::LayerFE> layerFE1 = mTestLayers[1]->layerFE;
+    CachedSet::Layer& layer2 = *mTestLayers[2]->cachedSetLayer.get();
+    sp<mock::LayerFE> layerFE2 = mTestLayers[2]->layerFE;
+
+    CachedSet cachedSet(layer1);
+    cachedSet.append(CachedSet(layer2));
+
+    std::vector<compositionengine::LayerFE::LayerSettings> clientCompList1;
+    clientCompList1.push_back({});
+
+    std::vector<compositionengine::LayerFE::LayerSettings> clientCompList2;
+    clientCompList2.push_back({});
+
+    mOutputState.displayBrightnessNits = 400.f;
+
+    const auto drawLayers =
+            [&](const renderengine::DisplaySettings& displaySettings,
+                const std::vector<renderengine::LayerSettings>&,
+                const std::shared_ptr<renderengine::ExternalTexture>&, const bool,
+                base::unique_fd&&) -> std::future<renderengine::RenderEngineResult> {
+        EXPECT_EQ(mOutputState.displayBrightnessNits, displaySettings.targetLuminanceNits);
+        return futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()});
+    };
+
+    EXPECT_CALL(*layerFE1,
+                prepareClientCompositionList(ClientCompositionTargetSettingsWhitePointEq(
+                        mOutputState.displayBrightnessNits)))
+            .WillOnce(Return(clientCompList1));
+    EXPECT_CALL(*layerFE2,
+                prepareClientCompositionList(ClientCompositionTargetSettingsWhitePointEq(
+                        mOutputState.displayBrightnessNits)))
+            .WillOnce(Return(clientCompList2));
+    EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
+    mOutputState.isSecure = true;
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, false);
     expectReadyBuffer(cachedSet);
 
     EXPECT_EQ(mOutputState.framebufferSpace, cachedSet.getOutputSpace());
@@ -527,7 +578,7 @@
     EXPECT_CALL(*layerFE1, prepareClientCompositionList(_)).WillOnce(Return(clientCompList1));
     EXPECT_CALL(*layerFE2, prepareClientCompositionList(_)).WillOnce(Return(clientCompList2));
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
     expectReadyBuffer(cachedSet);
 
     EXPECT_EQ(mOutputState.framebufferSpace, cachedSet.getOutputSpace());
@@ -767,7 +818,7 @@
     };
 
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
 }
 
 TEST_F(CachedSetTest, addHolePunch_noBuffer) {
@@ -829,7 +880,7 @@
     };
 
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
 }
 
 TEST_F(CachedSetTest, append_removesHolePunch) {
@@ -969,7 +1020,7 @@
     };
 
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
-    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState, true);
 }
 
 } // namespace
diff --git a/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp b/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp
index 50e3a28..96021ec 100644
--- a/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/planner/FlattenerTest.cpp
@@ -159,13 +159,13 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // same geometry, update the internal layer stack
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 }
 
 void FlattenerTest::expectAllLayersFlattened(const std::vector<const LayerState*>& layers) {
@@ -177,7 +177,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     for (const auto layer : layers) {
         EXPECT_EQ(nullptr, layer->getOutputLayer()->getState().overrideInfo.buffer);
@@ -187,7 +187,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     const auto buffer = layers[0]->getOutputLayer()->getState().overrideInfo.buffer;
     EXPECT_NE(nullptr, buffer);
@@ -222,7 +222,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 }
 
 TEST_F(FlattenerTest, flattenLayers_ActiveLayersWithLowFpsAreFlattened) {
@@ -284,7 +284,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -389,7 +389,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_EQ(nullptr, overrideBuffer2);
@@ -428,7 +428,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_EQ(nullptr, overrideBuffer2);
@@ -437,7 +437,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_NE(nullptr, overrideBuffer2);
@@ -452,7 +452,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_NE(nullptr, overrideBuffer2);
@@ -461,7 +461,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -505,7 +505,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_EQ(nullptr, overrideBuffer2);
@@ -521,7 +521,7 @@
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
     mOutputState.framebufferSpace.setOrientation(ui::ROTATION_90);
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -534,7 +534,7 @@
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
     mOutputState.framebufferSpace.setOrientation(ui::ROTATION_180);
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -550,7 +550,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -562,7 +562,7 @@
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
     mOutputState.framebufferSpace.setOrientation(ui::ROTATION_270);
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -603,7 +603,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -616,7 +616,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -669,7 +669,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -682,7 +682,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -743,7 +743,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer0);
@@ -753,7 +753,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer0); // got overridden
     EXPECT_EQ(nullptr, overrideBuffer1); // did not
@@ -815,7 +815,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer0);
@@ -825,7 +825,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer0); // got overridden
     EXPECT_EQ(nullptr, overrideBuffer1); // did not
@@ -871,7 +871,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     for (const auto layer : layers) {
         EXPECT_EQ(nullptr, layer->getOutputLayer()->getState().overrideInfo.buffer);
@@ -881,7 +881,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
     EXPECT_EQ(nullptr, overrideBuffer3);
@@ -917,7 +917,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     for (const auto layer : layers) {
         EXPECT_EQ(nullptr, layer->getOutputLayer()->getState().overrideInfo.buffer);
@@ -928,7 +928,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
     for (const auto layer : layers) {
         EXPECT_EQ(nullptr, layer->getOutputLayer()->getState().overrideInfo.buffer);
     }
@@ -971,7 +971,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     for (const auto layer : layers) {
         EXPECT_EQ(nullptr, layer->getOutputLayer()->getState().overrideInfo.buffer);
@@ -981,7 +981,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_EQ(nullptr, blurOverrideBuffer);
     EXPECT_NE(nullptr, overrideBuffer3);
@@ -1020,7 +1020,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     const auto& cachedSet = mFlattener->getNewCachedSetForTesting();
     ASSERT_NE(std::nullopt, cachedSet);
@@ -1034,7 +1034,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer2, overrideBuffer1);
     EXPECT_EQ(nullptr, blurOverrideBuffer);
@@ -1063,7 +1063,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_EQ(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_EQ(nullptr, overrideBuffer2);
@@ -1071,12 +1071,12 @@
     // Simulate attempting to render prior to merging the new cached set with the layer stack.
     // Here we should not try to re-render.
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).Times(0);
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We provide the override buffer now that it's rendered
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer2, overrideBuffer1);
@@ -1120,7 +1120,8 @@
         EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).Times(0);
         mFlattener->renderCachedSets(mOutputState,
                                      std::chrono::steady_clock::now() -
-                                             (kCachedSetRenderDuration + 10ms));
+                                             (kCachedSetRenderDuration + 10ms),
+                                     true);
     }
 
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
@@ -1128,7 +1129,8 @@
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
     mFlattener->renderCachedSets(mOutputState,
                                  std::chrono::steady_clock::now() -
-                                         (kCachedSetRenderDuration + 10ms));
+                                         (kCachedSetRenderDuration + 10ms),
+                                 true);
 }
 
 TEST_F(FlattenerTest, flattenLayers_skipsBT601_625) {
@@ -1162,7 +1164,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -1175,7 +1177,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -1213,7 +1215,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -1226,7 +1228,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -1264,7 +1266,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -1277,7 +1279,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
@@ -1318,7 +1320,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -1332,7 +1334,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_EQ(nullptr, overrideBuffer1);
     EXPECT_EQ(nullptr, overrideBuffer2);
@@ -1371,7 +1373,7 @@
     EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _))
             .WillOnce(Return(ByMove(
                     futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()}))));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     // We've rendered a CachedSet, but we haven't merged it in.
     EXPECT_EQ(nullptr, overrideBuffer1);
@@ -1384,7 +1386,7 @@
     initializeOverrideBuffer(layers);
     EXPECT_NE(getNonBufferHash(layers),
               mFlattener->flattenLayers(layers, getNonBufferHash(layers), mTime));
-    mFlattener->renderCachedSets(mOutputState, std::nullopt);
+    mFlattener->renderCachedSets(mOutputState, std::nullopt, true);
 
     EXPECT_NE(nullptr, overrideBuffer1);
     EXPECT_EQ(overrideBuffer1, overrideBuffer2);
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index a915b61..26fbd55 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -104,7 +104,7 @@
 
     mCompositionDisplay->getRenderSurface()->initialize();
 
-    setPowerMode(args.initialPowerMode);
+    if (args.initialPowerMode.has_value()) setPowerMode(args.initialPowerMode.value());
 
     // initialize the display orientation transform.
     setProjection(ui::ROTATION_0, Rect::INVALID_RECT, Rect::INVALID_RECT);
@@ -173,20 +173,31 @@
 }
 
 void DisplayDevice::setPowerMode(hal::PowerMode mode) {
+    if (mode == hal::PowerMode::OFF || mode == hal::PowerMode::ON) {
+        if (mStagedBrightness && mBrightness != *mStagedBrightness) {
+            getCompositionDisplay()->setNextBrightness(*mStagedBrightness);
+            mBrightness = *mStagedBrightness;
+        }
+        mStagedBrightness = std::nullopt;
+        getCompositionDisplay()->applyDisplayBrightness(true);
+    }
+
     mPowerMode = mode;
-    getCompositionDisplay()->setCompositionEnabled(mPowerMode != hal::PowerMode::OFF);
+
+    getCompositionDisplay()->setCompositionEnabled(mPowerMode.has_value() &&
+                                                   *mPowerMode != hal::PowerMode::OFF);
 }
 
 void DisplayDevice::enableLayerCaching(bool enable) {
     getCompositionDisplay()->setLayerCachingEnabled(enable);
 }
 
-hal::PowerMode DisplayDevice::getPowerMode() const {
+std::optional<hal::PowerMode> DisplayDevice::getPowerMode() const {
     return mPowerMode;
 }
 
 bool DisplayDevice::isPoweredOn() const {
-    return mPowerMode != hal::PowerMode::OFF;
+    return mPowerMode && *mPowerMode != hal::PowerMode::OFF;
 }
 
 void DisplayDevice::setActiveMode(DisplayModeId id) {
@@ -211,6 +222,7 @@
               to_string(getId()).c_str());
         return BAD_VALUE;
     }
+    mNumModeSwitchesInPolicy++;
     mUpcomingActiveMode = info;
     ATRACE_INT(mActiveModeFPSHwcTrace.c_str(), info.mode->getFps().getIntValue());
     return mHwComposer.setActiveModeWithConstraints(getPhysicalId(), info.mode->getHwcId(),
@@ -324,8 +336,10 @@
 }
 
 void DisplayDevice::persistBrightness(bool needsComposite) {
-    if (needsComposite && mStagedBrightness && mBrightness != *mStagedBrightness) {
-        getCompositionDisplay()->setNextBrightness(*mStagedBrightness);
+    if (mStagedBrightness && mBrightness != *mStagedBrightness) {
+        if (needsComposite) {
+            getCompositionDisplay()->setNextBrightness(*mStagedBrightness);
+        }
         mBrightness = *mStagedBrightness;
     }
     mStagedBrightness = std::nullopt;
@@ -372,7 +386,7 @@
     }
 
     result += "\n   powerMode="s;
-    result += to_string(mPowerMode);
+    result += mPowerMode.has_value() ? to_string(mPowerMode.value()) : "OFF(reset)";
     result += '\n';
 
     if (mRefreshRateConfigs) {
@@ -537,6 +551,27 @@
     mDesiredActiveModeChanged = false;
 }
 
+status_t DisplayDevice::setRefreshRatePolicy(
+        const std::optional<scheduler::RefreshRateConfigs::Policy>& policy, bool overridePolicy) {
+    const auto oldPolicy = mRefreshRateConfigs->getCurrentPolicy();
+    const status_t setPolicyResult = overridePolicy
+            ? mRefreshRateConfigs->setOverridePolicy(policy)
+            : mRefreshRateConfigs->setDisplayManagerPolicy(*policy);
+
+    if (setPolicyResult == OK) {
+        const int numModeChanges = mNumModeSwitchesInPolicy.exchange(0);
+
+        ALOGI("Display %s policy changed\n"
+              "Previous: {%s}\n"
+              "Current:  {%s}\n"
+              "%d mode changes were performed under the previous policy",
+              to_string(getId()).c_str(), oldPolicy.toString().c_str(),
+              policy ? policy->toString().c_str() : "null", numModeChanges);
+    }
+
+    return setPolicyResult;
+}
+
 std::atomic<int32_t> DisplayDeviceState::sNextSequenceId(1);
 
 }  // namespace android
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
index d5d87b4..fc24a9c 100644
--- a/services/surfaceflinger/DisplayDevice.h
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -181,7 +181,7 @@
     /* ------------------------------------------------------------------------
      * Display power mode management.
      */
-    hardware::graphics::composer::hal::PowerMode getPowerMode() const;
+    std::optional<hardware::graphics::composer::hal::PowerMode> getPowerMode() const;
     void setPowerMode(hardware::graphics::composer::hal::PowerMode mode);
     bool isPoweredOn() const;
 
@@ -249,6 +249,10 @@
     nsecs_t getVsyncPeriodFromHWC() const;
     nsecs_t getRefreshTimestamp() const;
 
+    status_t setRefreshRatePolicy(
+            const std::optional<scheduler::RefreshRateConfigs::Policy>& policy,
+            bool overridePolicy);
+
     // release HWC resources (if any) for removable displays
     void disconnect();
 
@@ -277,8 +281,8 @@
 
     static ui::Transform::RotationFlags sPrimaryDisplayRotationFlags;
 
-    hardware::graphics::composer::hal::PowerMode mPowerMode =
-            hardware::graphics::composer::hal::PowerMode::OFF;
+     // allow initial power mode as null.
+    std::optional<hardware::graphics::composer::hal::PowerMode> mPowerMode;
     DisplayModePtr mActiveMode;
     std::optional<float> mStagedBrightness = std::nullopt;
     float mBrightness = -1.f;
@@ -303,6 +307,8 @@
     TracedOrdinal<bool> mDesiredActiveModeChanged
             GUARDED_BY(mActiveModeLock) = {"DesiredActiveModeChanged", false};
     ActiveModeInfo mUpcomingActiveMode GUARDED_BY(kMainThreadContext);
+
+    std::atomic_int mNumModeSwitchesInPolicy = 0;
 };
 
 struct DisplayDeviceState {
@@ -360,8 +366,7 @@
     HdrCapabilities hdrCapabilities;
     int32_t supportedPerFrameMetadata{0};
     std::unordered_map<ui::ColorMode, std::vector<ui::RenderIntent>> hwcColorModes;
-    hardware::graphics::composer::hal::PowerMode initialPowerMode{
-            hardware::graphics::composer::hal::PowerMode::ON};
+    std::optional<hardware::graphics::composer::hal::PowerMode> initialPowerMode;
     bool isPrimary{false};
     DisplayModes supportedModes;
     DisplayModeId activeModeId;
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 0da8ece..a6aee1f 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -738,6 +738,13 @@
             });
 }
 
+bool HWComposer::getValidateSkipped(HalDisplayId displayId) const {
+    if (mDisplayData.count(displayId) == 0) {
+        return false;
+    }
+    return mDisplayData.at(displayId).validateWasSkipped;
+}
+
 status_t HWComposer::setBootDisplayMode(PhysicalDisplayId displayId,
                                         hal::HWConfigId displayModeId) {
     RETURN_IF_INVALID_DISPLAY(displayId, BAD_INDEX);
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 4c0ecd8..92a8f30 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -199,6 +199,9 @@
             PhysicalDisplayId, float brightness, float brightnessNits,
             const Hwc2::Composer::DisplayBrightnessOptions&) = 0;
 
+    // Get whether the display skipped validation on the latest present
+    virtual bool getValidateSkipped(HalDisplayId displayId) const = 0;
+
     // Events handling ---------------------------------------------------------
 
     // Returns stable display ID (and display name on connection of new or previously disconnected
@@ -397,6 +400,8 @@
 
     status_t setActiveColorMode(PhysicalDisplayId, ui::ColorMode, ui::RenderIntent) override;
 
+    bool getValidateSkipped(HalDisplayId displayId) const override;
+
     // Composer 2.4
     ui::DisplayConnectionType getDisplayConnectionType(PhysicalDisplayId) const override;
     bool isVsyncPeriodSwitchSupported(PhysicalDisplayId) const override;
diff --git a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
index b5678b4..a0350b7 100644
--- a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
+++ b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
@@ -187,7 +187,7 @@
     if (!mSupportsPowerHint.has_value()) {
         std::lock_guard lock(mPowerHalMutex);
         HalWrapper* const halWrapper = getPowerHal();
-        mSupportsPowerHint = halWrapper->supportsPowerHintSession();
+        mSupportsPowerHint = halWrapper && halWrapper->supportsPowerHintSession();
     }
     return *mSupportsPowerHint;
 }
@@ -196,7 +196,7 @@
     return mPowerHintSessionRunning;
 }
 
-void PowerAdvisor::setTargetWorkDuration(int64_t targetDurationNanos) {
+void PowerAdvisor::setTargetWorkDuration(int64_t targetDuration) {
     if (!usePowerHintSession()) {
         ALOGV("Power hint session target duration cannot be set, skipping");
         return;
@@ -205,26 +205,45 @@
         std::lock_guard lock(mPowerHalMutex);
         HalWrapper* const halWrapper = getPowerHal();
         if (halWrapper != nullptr) {
-            halWrapper->setTargetWorkDuration(targetDurationNanos - kTargetSafetyMargin.count());
+            halWrapper->setTargetWorkDuration(targetDuration);
         }
     }
 }
 
-void PowerAdvisor::sendActualWorkDuration(int64_t actualDurationNanos, nsecs_t timeStampNanos) {
+void PowerAdvisor::sendActualWorkDuration() {
     if (!mBootFinished || !usePowerHintSession()) {
         ALOGV("Actual work duration power hint cannot be sent, skipping");
         return;
     }
-    {
+    const std::optional<nsecs_t> actualDuration = estimateWorkDuration(false);
+    if (actualDuration.has_value()) {
         std::lock_guard lock(mPowerHalMutex);
         HalWrapper* const halWrapper = getPowerHal();
         if (halWrapper != nullptr) {
-            halWrapper->sendActualWorkDuration(actualDurationNanos, timeStampNanos);
+            halWrapper->sendActualWorkDuration(*actualDuration + kTargetSafetyMargin.count(),
+                                               systemTime());
         }
     }
 }
 
-// needs to be set after the flag is known but before PowerAdvisor enters onBootFinished
+void PowerAdvisor::sendPredictedWorkDuration() {
+    if (!mBootFinished || !usePowerHintSession()) {
+        ALOGV("Actual work duration power hint cannot be sent, skipping");
+        return;
+    }
+
+    const std::optional<nsecs_t> predictedDuration = estimateWorkDuration(true);
+
+    if (predictedDuration.has_value()) {
+        std::lock_guard lock(mPowerHalMutex);
+        HalWrapper* const halWrapper = getPowerHal();
+        if (halWrapper != nullptr) {
+            halWrapper->sendActualWorkDuration(*predictedDuration + kTargetSafetyMargin.count(),
+                                               systemTime());
+        }
+    }
+}
+
 void PowerAdvisor::enablePowerHint(bool enabled) {
     mPowerHintEnabled = enabled;
 }
@@ -244,6 +263,302 @@
     return mPowerHintSessionRunning;
 }
 
+void PowerAdvisor::setGpuFenceTime(DisplayId displayId, std::unique_ptr<FenceTime>&& fenceTime) {
+    DisplayTimingData& displayData = mDisplayTimingData[displayId];
+    if (displayData.gpuEndFenceTime) {
+        nsecs_t signalTime = displayData.gpuEndFenceTime->getSignalTime();
+        if (signalTime != Fence::SIGNAL_TIME_INVALID && signalTime != Fence::SIGNAL_TIME_PENDING) {
+            for (auto&& [_, otherDisplayData] : mDisplayTimingData) {
+                // If the previous display started before us but ended after we should have
+                // started, then it likely delayed our start time and we must compensate for that.
+                // Displays finishing earlier should have already made their way through this call
+                // and swapped their timing into "lastValid" from "latest", so we check that here.
+                if (!otherDisplayData.lastValidGpuStartTime.has_value()) continue;
+                if ((*otherDisplayData.lastValidGpuStartTime < *displayData.gpuStartTime) &&
+                    (*otherDisplayData.lastValidGpuEndTime > *displayData.gpuStartTime)) {
+                    displayData.lastValidGpuStartTime = *otherDisplayData.lastValidGpuEndTime;
+                    break;
+                }
+            }
+            displayData.lastValidGpuStartTime = displayData.gpuStartTime;
+            displayData.lastValidGpuEndTime = signalTime;
+        }
+    }
+    displayData.gpuEndFenceTime = std::move(fenceTime);
+    displayData.gpuStartTime = systemTime();
+}
+
+void PowerAdvisor::setHwcValidateTiming(DisplayId displayId, nsecs_t validateStartTime,
+                                        nsecs_t validateEndTime) {
+    DisplayTimingData& displayData = mDisplayTimingData[displayId];
+    displayData.hwcValidateStartTime = validateStartTime;
+    displayData.hwcValidateEndTime = validateEndTime;
+}
+
+void PowerAdvisor::setHwcPresentTiming(DisplayId displayId, nsecs_t presentStartTime,
+                                       nsecs_t presentEndTime) {
+    DisplayTimingData& displayData = mDisplayTimingData[displayId];
+    displayData.hwcPresentStartTime = presentStartTime;
+    displayData.hwcPresentEndTime = presentEndTime;
+}
+
+void PowerAdvisor::setSkippedValidate(DisplayId displayId, bool skipped) {
+    mDisplayTimingData[displayId].skippedValidate = skipped;
+}
+
+void PowerAdvisor::setRequiresClientComposition(DisplayId displayId,
+                                                bool requiresClientComposition) {
+    mDisplayTimingData[displayId].usedClientComposition = requiresClientComposition;
+}
+
+void PowerAdvisor::setExpectedPresentTime(nsecs_t expectedPresentTime) {
+    mExpectedPresentTimes.append(expectedPresentTime);
+}
+
+void PowerAdvisor::setSfPresentTiming(nsecs_t presentFenceTime, nsecs_t presentEndTime) {
+    mLastSfPresentEndTime = presentEndTime;
+    mLastPresentFenceTime = presentFenceTime;
+}
+
+void PowerAdvisor::setFrameDelay(nsecs_t frameDelayDuration) {
+    mFrameDelayDuration = frameDelayDuration;
+}
+
+void PowerAdvisor::setHwcPresentDelayedTime(
+        DisplayId displayId, std::chrono::steady_clock::time_point earliestFrameStartTime) {
+    mDisplayTimingData[displayId].hwcPresentDelayedTime =
+            (earliestFrameStartTime - std::chrono::steady_clock::now()).count() + systemTime();
+}
+
+void PowerAdvisor::setCommitStart(nsecs_t commitStartTime) {
+    mCommitStartTimes.append(commitStartTime);
+}
+
+void PowerAdvisor::setCompositeEnd(nsecs_t compositeEnd) {
+    mLastPostcompDuration = compositeEnd - mLastSfPresentEndTime;
+}
+
+void PowerAdvisor::setDisplays(std::vector<DisplayId>& displayIds) {
+    mDisplayIds = displayIds;
+}
+
+void PowerAdvisor::setTotalFrameTargetWorkDuration(nsecs_t targetDuration) {
+    mTotalFrameTargetDuration = targetDuration;
+}
+
+std::vector<DisplayId> PowerAdvisor::getOrderedDisplayIds(
+        std::optional<nsecs_t> DisplayTimingData::*sortBy) {
+    std::vector<DisplayId> sortedDisplays;
+    std::copy_if(mDisplayIds.begin(), mDisplayIds.end(), std::back_inserter(sortedDisplays),
+                 [&](DisplayId id) {
+                     return mDisplayTimingData.count(id) &&
+                             (mDisplayTimingData[id].*sortBy).has_value();
+                 });
+    std::sort(sortedDisplays.begin(), sortedDisplays.end(), [&](DisplayId idA, DisplayId idB) {
+        return *(mDisplayTimingData[idA].*sortBy) < *(mDisplayTimingData[idB].*sortBy);
+    });
+    return sortedDisplays;
+}
+
+std::optional<nsecs_t> PowerAdvisor::estimateWorkDuration(bool earlyHint) {
+    if (earlyHint && (!mExpectedPresentTimes.isFull() || !mCommitStartTimes.isFull())) {
+        return std::nullopt;
+    }
+
+    // Tracks when we finish presenting to hwc
+    nsecs_t estimatedEndTime = mCommitStartTimes[0];
+
+    // How long we spent this frame not doing anything, waiting for fences or vsync
+    nsecs_t idleDuration = 0;
+
+    // Most recent previous gpu end time in the current frame, probably from a prior display, used
+    // as the start time for the next gpu operation if it ran over time since it probably blocked
+    std::optional<nsecs_t> previousValidGpuEndTime;
+
+    // The currently estimated gpu end time for the frame,
+    // used to accumulate gpu time as we iterate over the active displays
+    std::optional<nsecs_t> estimatedGpuEndTime;
+
+    // If we're predicting at the start of the frame, we use last frame as our reference point
+    // If we're predicting at the end of the frame, we use the current frame as a reference point
+    nsecs_t referenceFrameStartTime = (earlyHint ? mCommitStartTimes[-1] : mCommitStartTimes[0]);
+
+    // When the prior frame should be presenting to the display
+    // If we're predicting at the start of the frame, we use last frame's expected present time
+    // If we're predicting at the end of the frame, the present fence time is already known
+    nsecs_t lastFramePresentTime = (earlyHint ? mExpectedPresentTimes[-1] : mLastPresentFenceTime);
+
+    // The timing info for the previously calculated display, if there was one
+    std::optional<DisplayTimeline> previousDisplayReferenceTiming;
+    std::vector<DisplayId>&& displayIds =
+            getOrderedDisplayIds(&DisplayTimingData::hwcPresentStartTime);
+    DisplayTimeline referenceTiming, estimatedTiming;
+
+    // Iterate over the displays that use hwc in the same order they are presented
+    for (DisplayId displayId : displayIds) {
+        if (mDisplayTimingData.count(displayId) == 0) {
+            continue;
+        }
+
+        auto& displayData = mDisplayTimingData.at(displayId);
+
+        // mLastPresentFenceTime should always be the time of the reference frame, since it will be
+        // the previous frame's present fence if called at the start, and current frame's if called
+        // at the end
+        referenceTiming = displayData.calculateDisplayTimeline(mLastPresentFenceTime);
+
+        // If this is the first display, include the duration before hwc present starts
+        if (!previousDisplayReferenceTiming.has_value()) {
+            estimatedEndTime += referenceTiming.hwcPresentStartTime - referenceFrameStartTime;
+        } else { // Otherwise add the time since last display's hwc present finished
+            estimatedEndTime += referenceTiming.hwcPresentStartTime -
+                    previousDisplayReferenceTiming->hwcPresentEndTime;
+        }
+
+        // Late hint can re-use reference timing here since it's estimating its own reference frame
+        estimatedTiming = earlyHint
+                ? referenceTiming.estimateTimelineFromReference(lastFramePresentTime,
+                                                                estimatedEndTime)
+                : referenceTiming;
+
+        // Update predicted present finish time with this display's present time
+        estimatedEndTime = estimatedTiming.hwcPresentEndTime;
+
+        // Track how long we spent waiting for the fence, can be excluded from the timing estimate
+        idleDuration += estimatedTiming.probablyWaitsForPresentFence
+                ? lastFramePresentTime - estimatedTiming.presentFenceWaitStartTime
+                : 0;
+
+        // Track how long we spent waiting to present, can be excluded from the timing estimate
+        idleDuration += earlyHint ? 0 : referenceTiming.hwcPresentDelayDuration;
+
+        // Estimate the reference frame's gpu timing
+        auto gpuTiming = displayData.estimateGpuTiming(previousValidGpuEndTime);
+        if (gpuTiming.has_value()) {
+            previousValidGpuEndTime = gpuTiming->startTime + gpuTiming->duration;
+
+            // Estimate the prediction frame's gpu end time from the reference frame
+            estimatedGpuEndTime =
+                    std::max(estimatedTiming.hwcPresentStartTime, estimatedGpuEndTime.value_or(0)) +
+                    gpuTiming->duration;
+        }
+        previousDisplayReferenceTiming = referenceTiming;
+    }
+    ATRACE_INT64("Idle duration", idleDuration);
+
+    nsecs_t estimatedFlingerEndTime = earlyHint ? estimatedEndTime : mLastSfPresentEndTime;
+
+    // Don't count time spent idly waiting in the estimate as we could do more work in that time
+    estimatedEndTime -= idleDuration;
+    estimatedFlingerEndTime -= idleDuration;
+
+    // We finish the frame when both present and the gpu are done, so wait for the later of the two
+    // Also add the frame delay duration since the target did not move while we were delayed
+    nsecs_t totalDuration = mFrameDelayDuration +
+            std::max(estimatedEndTime, estimatedGpuEndTime.value_or(0)) - mCommitStartTimes[0];
+
+    // We finish SurfaceFlinger when post-composition finishes, so add that in here
+    nsecs_t flingerDuration =
+            estimatedFlingerEndTime + mLastPostcompDuration - mCommitStartTimes[0];
+
+    // Combine the two timings into a single normalized one
+    nsecs_t combinedDuration = combineTimingEstimates(totalDuration, flingerDuration);
+
+    return std::make_optional(combinedDuration);
+}
+
+nsecs_t PowerAdvisor::combineTimingEstimates(nsecs_t totalDuration, nsecs_t flingerDuration) {
+    nsecs_t targetDuration;
+    {
+        std::lock_guard lock(mPowerHalMutex);
+        targetDuration = *getPowerHal()->getTargetWorkDuration();
+    }
+    if (!mTotalFrameTargetDuration.has_value()) return flingerDuration;
+
+    // Normalize total to the flinger target (vsync period) since that's how often we actually send
+    // hints
+    nsecs_t normalizedTotalDuration = (targetDuration * totalDuration) / *mTotalFrameTargetDuration;
+    return std::max(flingerDuration, normalizedTotalDuration);
+}
+
+PowerAdvisor::DisplayTimeline PowerAdvisor::DisplayTimeline::estimateTimelineFromReference(
+        nsecs_t fenceTime, nsecs_t displayStartTime) {
+    DisplayTimeline estimated;
+    estimated.hwcPresentStartTime = displayStartTime;
+
+    // We don't predict waiting for vsync alignment yet
+    estimated.hwcPresentDelayDuration = 0;
+
+    // How long we expect to run before we start waiting for the fence
+    // For now just re-use last frame's post-present duration and assume it will not change much
+    // Excludes time spent waiting for vsync since that's not going to be consistent
+    estimated.presentFenceWaitStartTime = estimated.hwcPresentStartTime +
+            (presentFenceWaitStartTime - (hwcPresentStartTime + hwcPresentDelayDuration));
+    estimated.probablyWaitsForPresentFence = fenceTime > estimated.presentFenceWaitStartTime;
+    estimated.hwcPresentEndTime = postPresentFenceHwcPresentDuration +
+            (estimated.probablyWaitsForPresentFence ? fenceTime
+                                                    : estimated.presentFenceWaitStartTime);
+    return estimated;
+}
+
+PowerAdvisor::DisplayTimeline PowerAdvisor::DisplayTimingData::calculateDisplayTimeline(
+        nsecs_t fenceTime) {
+    DisplayTimeline timeline;
+    // How long between calling hwc present and trying to wait on the fence
+    const nsecs_t fenceWaitStartDelay =
+            (skippedValidate ? kFenceWaitStartDelaySkippedValidate : kFenceWaitStartDelayValidated)
+                    .count();
+
+    // Did our reference frame wait for an appropriate vsync before calling into hwc
+    const bool waitedOnHwcPresentTime = hwcPresentDelayedTime.has_value() &&
+            *hwcPresentDelayedTime > *hwcPresentStartTime &&
+            *hwcPresentDelayedTime < *hwcPresentEndTime;
+
+    // Use validate start here if we skipped it because we did validate + present together
+    timeline.hwcPresentStartTime = skippedValidate ? *hwcValidateStartTime : *hwcPresentStartTime;
+
+    // Use validate end here if we skipped it because we did validate + present together
+    timeline.hwcPresentEndTime = skippedValidate ? *hwcValidateEndTime : *hwcPresentEndTime;
+
+    // How long hwc present was delayed waiting for the next appropriate vsync
+    timeline.hwcPresentDelayDuration =
+            (waitedOnHwcPresentTime ? *hwcPresentDelayedTime - *hwcPresentStartTime : 0);
+    // When we started waiting for the present fence after calling into hwc present
+    timeline.presentFenceWaitStartTime =
+            timeline.hwcPresentStartTime + timeline.hwcPresentDelayDuration + fenceWaitStartDelay;
+    timeline.probablyWaitsForPresentFence = fenceTime > timeline.presentFenceWaitStartTime &&
+            fenceTime < timeline.hwcPresentEndTime;
+
+    // How long we ran after we finished waiting for the fence but before hwc present finished
+    timeline.postPresentFenceHwcPresentDuration = timeline.hwcPresentEndTime -
+            (timeline.probablyWaitsForPresentFence ? fenceTime
+                                                   : timeline.presentFenceWaitStartTime);
+    return timeline;
+}
+
+std::optional<PowerAdvisor::GpuTimeline> PowerAdvisor::DisplayTimingData::estimateGpuTiming(
+        std::optional<nsecs_t> previousEnd) {
+    if (!(usedClientComposition && lastValidGpuStartTime.has_value() && gpuEndFenceTime)) {
+        return std::nullopt;
+    }
+    const nsecs_t latestGpuStartTime = std::max(previousEnd.value_or(0), *gpuStartTime);
+    const nsecs_t latestGpuEndTime = gpuEndFenceTime->getSignalTime();
+    nsecs_t gpuDuration = 0;
+    if (latestGpuEndTime != Fence::SIGNAL_TIME_INVALID &&
+        latestGpuEndTime != Fence::SIGNAL_TIME_PENDING) {
+        // If we know how long the most recent gpu duration was, use that
+        gpuDuration = latestGpuEndTime - latestGpuStartTime;
+    } else if (lastValidGpuEndTime.has_value()) {
+        // If we don't have the fence data, use the most recent information we do have
+        gpuDuration = *lastValidGpuEndTime - *lastValidGpuStartTime;
+        if (latestGpuEndTime == Fence::SIGNAL_TIME_PENDING) {
+            // If pending but went over the previous duration, use current time as the end
+            gpuDuration = std::max(gpuDuration, systemTime() - latestGpuStartTime);
+        }
+    }
+    return GpuTimeline{.duration = gpuDuration, .startTime = latestGpuStartTime};
+}
+
 class HidlPowerHalWrapper : public PowerAdvisor::HalWrapper {
 public:
     HidlPowerHalWrapper(sp<V1_3::IPower> powerHal) : mPowerHal(std::move(powerHal)) {}
@@ -325,6 +640,9 @@
     }
 
     mSupportsPowerHint = checkPowerHintSessionSupported();
+
+    // Currently set to 0 to disable rate limiter by default
+    mAllowedActualDeviation = base::GetIntProperty<nsecs_t>("debug.sf.allowed_actual_deviation", 0);
 }
 
 AidlPowerHalWrapper::~AidlPowerHalWrapper() {
@@ -332,7 +650,7 @@
         mPowerHintSession->close();
         mPowerHintSession = nullptr;
     }
-};
+}
 
 std::unique_ptr<PowerAdvisor::HalWrapper> AidlPowerHalWrapper::connect() {
     // This only waits if the service is actually declared
@@ -370,7 +688,7 @@
     return ret.isOk();
 }
 
-// only version 2+ of the aidl supports power hint sessions, hidl has no support
+// Only version 2+ of the aidl supports power hint sessions, hidl has no support
 bool AidlPowerHalWrapper::supportsPowerHintSession() {
     return mSupportsPowerHint;
 }
@@ -424,30 +742,14 @@
     return isPowerHintSessionRunning();
 }
 
-bool AidlPowerHalWrapper::shouldSetTargetDuration(int64_t targetDurationNanos) {
-    if (targetDurationNanos <= 0) {
-        return false;
-    }
-    // report if the change in target from our last submission to now exceeds the threshold
-    return abs(1.0 -
-               static_cast<double>(mLastTargetDurationSent) /
-                       static_cast<double>(targetDurationNanos)) >= kAllowedTargetDeviationPercent;
-}
-
-void AidlPowerHalWrapper::setTargetWorkDuration(int64_t targetDurationNanos) {
+void AidlPowerHalWrapper::setTargetWorkDuration(int64_t targetDuration) {
     ATRACE_CALL();
-    mTargetDuration = targetDurationNanos;
-    if (sTraceHintSessionData) ATRACE_INT64("Time target", targetDurationNanos);
-    if (!sNormalizeTarget && isPowerHintSessionRunning() &&
-        shouldSetTargetDuration(targetDurationNanos)) {
-        if (mLastActualDurationSent.has_value()) {
-            // update the error term here since we are actually sending an update to powerhal
-            if (sTraceHintSessionData)
-                ATRACE_INT64("Target error term", targetDurationNanos - *mLastActualDurationSent);
-        }
-        ALOGV("Sending target time: %" PRId64 "ns", targetDurationNanos);
-        mLastTargetDurationSent = targetDurationNanos;
-        auto ret = mPowerHintSession->updateTargetWorkDuration(targetDurationNanos);
+    mTargetDuration = targetDuration;
+    if (sTraceHintSessionData) ATRACE_INT64("Time target", targetDuration);
+    if (isPowerHintSessionRunning() && (targetDuration != mLastTargetDurationSent)) {
+        ALOGV("Sending target time: %" PRId64 "ns", targetDuration);
+        mLastTargetDurationSent = targetDuration;
+        auto ret = mPowerHintSession->updateTargetWorkDuration(targetDuration);
         if (!ret.isOk()) {
             ALOGW("Failed to set power hint target work duration with error: %s",
                   ret.exceptionMessage().c_str());
@@ -456,8 +758,8 @@
     }
 }
 
-bool AidlPowerHalWrapper::shouldReportActualDurationsNow() {
-    // report if we have never reported before or are approaching a stale session
+bool AidlPowerHalWrapper::shouldReportActualDurations() {
+    // Report if we have never reported before or are approaching a stale session
     if (!mLastActualDurationSent.has_value() ||
         (systemTime() - mLastActualReportTimestamp) > kStaleTimeout.count()) {
         return true;
@@ -466,65 +768,42 @@
     if (!mActualDuration.has_value()) {
         return false;
     }
-
-    // duration of most recent timing
-    const double mostRecentActualDuration = static_cast<double>(*mActualDuration);
-    // duration of the last timing actually reported to the powerhal
-    const double lastReportedActualDuration = static_cast<double>(*mLastActualDurationSent);
-
-    // report if the change in duration from then to now exceeds the threshold
-    return abs(1.0 - mostRecentActualDuration / lastReportedActualDuration) >=
-            kAllowedActualDeviationPercent;
+    // Report if the change in actual duration exceeds the threshold
+    return abs(*mActualDuration - *mLastActualDurationSent) > mAllowedActualDeviation;
 }
 
-void AidlPowerHalWrapper::sendActualWorkDuration(int64_t actualDurationNanos,
-                                                 nsecs_t timeStampNanos) {
+void AidlPowerHalWrapper::sendActualWorkDuration(int64_t actualDuration, nsecs_t timestamp) {
     ATRACE_CALL();
 
-    if (actualDurationNanos < 0 || !isPowerHintSessionRunning()) {
+    if (actualDuration < 0 || !isPowerHintSessionRunning()) {
         ALOGV("Failed to send actual work duration, skipping");
         return;
     }
-    nsecs_t reportedDuration = actualDurationNanos;
+    const nsecs_t reportedDuration = actualDuration;
 
-    // normalize the sent values to a pre-set target
-    if (sNormalizeTarget) {
-        reportedDuration += mLastTargetDurationSent - mTargetDuration;
-    } else {
-        // when target duration change is within deviation and not updated, adjust the actual
-        // duration proportionally based on the difference, e.g. if new target is 5ms longer than
-        // last reported but actual duration is the same as last target, we want to report a smaller
-        // actual work duration now to indicate that we are overshooting
-        if (mLastTargetDurationSent != kDefaultTarget.count() && mTargetDuration != 0) {
-            reportedDuration =
-                    static_cast<int64_t>(static_cast<long double>(mLastTargetDurationSent) /
-                                         mTargetDuration * actualDurationNanos);
-            mActualDuration = reportedDuration;
-        }
-    }
     mActualDuration = reportedDuration;
     WorkDuration duration;
     duration.durationNanos = reportedDuration;
-    duration.timeStampNanos = timeStampNanos;
+    duration.timeStampNanos = timestamp;
     mPowerHintQueue.push_back(duration);
 
     if (sTraceHintSessionData) {
-        ATRACE_INT64("Measured duration", actualDurationNanos);
-        ATRACE_INT64("Target error term", mTargetDuration - actualDurationNanos);
+        ATRACE_INT64("Measured duration", actualDuration);
+        ATRACE_INT64("Target error term", actualDuration - mTargetDuration);
 
         ATRACE_INT64("Reported duration", reportedDuration);
         ATRACE_INT64("Reported target", mLastTargetDurationSent);
-        ATRACE_INT64("Reported target error term", mLastTargetDurationSent - reportedDuration);
+        ATRACE_INT64("Reported target error term", reportedDuration - mLastTargetDurationSent);
     }
 
     ALOGV("Sending actual work duration of: %" PRId64 " on reported target: %" PRId64
           " with error: %" PRId64,
-          reportedDuration, mLastTargetDurationSent, mLastTargetDurationSent - reportedDuration);
+          reportedDuration, mLastTargetDurationSent, reportedDuration - mLastTargetDurationSent);
 
     // This rate limiter queues similar duration reports to the powerhal into
     // batches to avoid excessive binder calls. The criteria to send a given batch
     // are outlined in shouldReportActualDurationsNow()
-    if (shouldReportActualDurationsNow()) {
+    if (shouldReportActualDurations()) {
         ALOGV("Sending hint update batch");
         mLastActualReportTimestamp = systemTime();
         auto ret = mPowerHintSession->reportActualWorkDuration(mPowerHintQueue);
@@ -534,8 +813,8 @@
             mShouldReconnectHal = true;
         }
         mPowerHintQueue.clear();
-        // we save the non-normalized value here to detect % changes
-        mLastActualDurationSent = reportedDuration;
+        // We save the actual duration here for rate limiting
+        mLastActualDurationSent = actualDuration;
     }
 }
 
@@ -551,76 +830,73 @@
     return mTargetDuration;
 }
 
+void AidlPowerHalWrapper::setAllowedActualDeviation(nsecs_t allowedDeviation) {
+    mAllowedActualDeviation = allowedDeviation;
+}
+
 const bool AidlPowerHalWrapper::sTraceHintSessionData =
         base::GetBoolProperty(std::string("debug.sf.trace_hint_sessions"), false);
 
-const bool AidlPowerHalWrapper::sNormalizeTarget =
-        base::GetBoolProperty(std::string("debug.sf.normalize_hint_session_durations"), false);
-
 PowerAdvisor::HalWrapper* PowerAdvisor::getPowerHal() {
-    static std::unique_ptr<HalWrapper> sHalWrapper = nullptr;
-    static bool sHasHal = true;
-
-    if (!sHasHal) {
+    if (!mHasHal) {
         return nullptr;
     }
 
-    // grab old hint session values before we destroy any existing wrapper
+    // Grab old hint session values before we destroy any existing wrapper
     std::vector<int32_t> oldPowerHintSessionThreadIds;
     std::optional<int64_t> oldTargetWorkDuration;
 
-    if (sHalWrapper != nullptr) {
-        oldPowerHintSessionThreadIds = sHalWrapper->getPowerHintSessionThreadIds();
-        oldTargetWorkDuration = sHalWrapper->getTargetWorkDuration();
+    if (mHalWrapper != nullptr) {
+        oldPowerHintSessionThreadIds = mHalWrapper->getPowerHintSessionThreadIds();
+        oldTargetWorkDuration = mHalWrapper->getTargetWorkDuration();
     }
 
     // If we used to have a HAL, but it stopped responding, attempt to reconnect
     if (mReconnectPowerHal) {
-        sHalWrapper = nullptr;
+        mHalWrapper = nullptr;
         mReconnectPowerHal = false;
     }
 
-    if (sHalWrapper != nullptr) {
-        auto wrapper = sHalWrapper.get();
-        // if the wrapper is fine, return it, but if it indicates a reconnect, remake it
+    if (mHalWrapper != nullptr) {
+        auto wrapper = mHalWrapper.get();
+        // If the wrapper is fine, return it, but if it indicates a reconnect, remake it
         if (!wrapper->shouldReconnectHAL()) {
             return wrapper;
         }
         ALOGD("Reconnecting Power HAL");
-        sHalWrapper = nullptr;
+        mHalWrapper = nullptr;
     }
 
-    // at this point, we know for sure there is no running session
+    // At this point, we know for sure there is no running session
     mPowerHintSessionRunning = false;
 
     // First attempt to connect to the AIDL Power HAL
-    sHalWrapper = AidlPowerHalWrapper::connect();
+    mHalWrapper = AidlPowerHalWrapper::connect();
 
     // If that didn't succeed, attempt to connect to the HIDL Power HAL
-    if (sHalWrapper == nullptr) {
-        sHalWrapper = HidlPowerHalWrapper::connect();
+    if (mHalWrapper == nullptr) {
+        mHalWrapper = HidlPowerHalWrapper::connect();
     } else {
         ALOGD("Successfully connecting AIDL Power HAL");
-        // if AIDL, pass on any existing hint session values
-        // thread ids always safe to set
-        sHalWrapper->setPowerHintSessionThreadIds(oldPowerHintSessionThreadIds);
-        // only set duration and start if duration is defined
+        // If AIDL, pass on any existing hint session values
+        mHalWrapper->setPowerHintSessionThreadIds(oldPowerHintSessionThreadIds);
+        // Only set duration and start if duration is defined
         if (oldTargetWorkDuration.has_value()) {
-            sHalWrapper->setTargetWorkDuration(*oldTargetWorkDuration);
-            // only start if possible to run and both threadids and duration are defined
+            mHalWrapper->setTargetWorkDuration(*oldTargetWorkDuration);
+            // Only start if possible to run and both threadids and duration are defined
             if (usePowerHintSession() && !oldPowerHintSessionThreadIds.empty()) {
-                mPowerHintSessionRunning = sHalWrapper->startPowerHintSession();
+                mPowerHintSessionRunning = mHalWrapper->startPowerHintSession();
             }
         }
     }
 
     // If we make it to this point and still don't have a HAL, it's unlikely we
     // will, so stop trying
-    if (sHalWrapper == nullptr) {
-        sHasHal = false;
+    if (mHalWrapper == nullptr) {
+        mHasHal = false;
     }
 
-    return sHalWrapper.get();
+    return mHalWrapper.get();
 }
 
 } // namespace impl
diff --git a/services/surfaceflinger/DisplayHardware/PowerAdvisor.h b/services/surfaceflinger/DisplayHardware/PowerAdvisor.h
index 7c10e19..6e25f78 100644
--- a/services/surfaceflinger/DisplayHardware/PowerAdvisor.h
+++ b/services/surfaceflinger/DisplayHardware/PowerAdvisor.h
@@ -18,11 +18,15 @@
 
 #include <atomic>
 #include <chrono>
+#include <unordered_map>
 #include <unordered_set>
 
+#include <ui/DisplayId.h>
+#include <ui/FenceTime.h>
 #include <utils/Mutex.h>
 
 #include <android/hardware/power/IPower.h>
+#include <compositionengine/impl/OutputCompositionState.h>
 #include <ui/DisplayIdentification.h>
 #include "../Scheduler/OneShotTimer.h"
 
@@ -44,13 +48,50 @@
     virtual void setExpensiveRenderingExpected(DisplayId displayId, bool expected) = 0;
     virtual bool isUsingExpensiveRendering() = 0;
     virtual void notifyDisplayUpdateImminent() = 0;
+    // Checks both if it supports and if it's enabled
     virtual bool usePowerHintSession() = 0;
     virtual bool supportsPowerHintSession() = 0;
     virtual bool isPowerHintSessionRunning() = 0;
-    virtual void setTargetWorkDuration(int64_t targetDurationNanos) = 0;
-    virtual void sendActualWorkDuration(int64_t actualDurationNanos, nsecs_t timestamp) = 0;
+    // Sends a power hint that updates to the target work duration for the frame
+    virtual void setTargetWorkDuration(nsecs_t targetDuration) = 0;
+    // Sends a power hint for the actual known work duration at the end of the frame
+    virtual void sendActualWorkDuration() = 0;
+    // Sends a power hint for the upcoming frame predicted from previous frame timing
+    virtual void sendPredictedWorkDuration() = 0;
+    // Sets whether the power hint session is enabled
     virtual void enablePowerHint(bool enabled) = 0;
+    // Initializes the power hint session
     virtual bool startPowerHintSession(const std::vector<int32_t>& threadIds) = 0;
+    // Provides PowerAdvisor with a copy of the gpu fence so it can determine the gpu end time
+    virtual void setGpuFenceTime(DisplayId displayId, std::unique_ptr<FenceTime>&& fenceTime) = 0;
+    // Reports the start and end times of a hwc validate call this frame for a given display
+    virtual void setHwcValidateTiming(DisplayId displayId, nsecs_t validateStartTime,
+                                      nsecs_t validateEndTime) = 0;
+    // Reports the start and end times of a hwc present call this frame for a given display
+    virtual void setHwcPresentTiming(DisplayId displayId, nsecs_t presentStartTime,
+                                     nsecs_t presentEndTime) = 0;
+    // Reports the expected time that the current frame will present to the display
+    virtual void setExpectedPresentTime(nsecs_t expectedPresentTime) = 0;
+    // Reports the most recent present fence time and end time once known
+    virtual void setSfPresentTiming(nsecs_t presentFenceTime, nsecs_t presentEndTime) = 0;
+    // Reports whether a display used client composition this frame
+    virtual void setRequiresClientComposition(DisplayId displayId,
+                                              bool requiresClientComposition) = 0;
+    // Reports whether a given display skipped validation this frame
+    virtual void setSkippedValidate(DisplayId displayId, bool skipped) = 0;
+    // Reports when a hwc present is delayed, and the time that it will resume
+    virtual void setHwcPresentDelayedTime(
+            DisplayId displayId, std::chrono::steady_clock::time_point earliestFrameStartTime) = 0;
+    // Reports the start delay for SurfaceFlinger this frame
+    virtual void setFrameDelay(nsecs_t frameDelayDuration) = 0;
+    // Reports the SurfaceFlinger commit start time this frame
+    virtual void setCommitStart(nsecs_t commitStartTime) = 0;
+    // Reports the SurfaceFlinger composite end time this frame
+    virtual void setCompositeEnd(nsecs_t compositeEndTime) = 0;
+    // Reports the list of the currently active displays
+    virtual void setDisplays(std::vector<DisplayId>& displayIds) = 0;
+    // Sets the target duration for the entire pipeline including the gpu
+    virtual void setTotalFrameTargetWorkDuration(nsecs_t targetDuration) = 0;
 };
 
 namespace impl {
@@ -70,12 +111,11 @@
         virtual void restartPowerHintSession() = 0;
         virtual void setPowerHintSessionThreadIds(const std::vector<int32_t>& threadIds) = 0;
         virtual bool startPowerHintSession() = 0;
-        virtual void setTargetWorkDuration(int64_t targetDurationNanos) = 0;
-        virtual void sendActualWorkDuration(int64_t actualDurationNanos,
-                                            nsecs_t timeStampNanos) = 0;
+        virtual void setTargetWorkDuration(nsecs_t targetDuration) = 0;
+        virtual void sendActualWorkDuration(nsecs_t actualDuration, nsecs_t timestamp) = 0;
         virtual bool shouldReconnectHAL() = 0;
         virtual std::vector<int32_t> getPowerHintSessionThreadIds() = 0;
-        virtual std::optional<int64_t> getTargetWorkDuration() = 0;
+        virtual std::optional<nsecs_t> getTargetWorkDuration() = 0;
     };
 
     PowerAdvisor(SurfaceFlinger& flinger);
@@ -89,26 +129,43 @@
     bool usePowerHintSession() override;
     bool supportsPowerHintSession() override;
     bool isPowerHintSessionRunning() override;
-    void setTargetWorkDuration(int64_t targetDurationNanos) override;
-    void sendActualWorkDuration(int64_t actualDurationNanos, nsecs_t timestamp) override;
+    void setTargetWorkDuration(nsecs_t targetDuration) override;
+    void sendActualWorkDuration() override;
+    void sendPredictedWorkDuration() override;
     void enablePowerHint(bool enabled) override;
     bool startPowerHintSession(const std::vector<int32_t>& threadIds) override;
+    void setGpuFenceTime(DisplayId displayId, std::unique_ptr<FenceTime>&& fenceTime);
+    void setHwcValidateTiming(DisplayId displayId, nsecs_t valiateStartTime,
+                              nsecs_t validateEndTime) override;
+    void setHwcPresentTiming(DisplayId displayId, nsecs_t presentStartTime,
+                             nsecs_t presentEndTime) override;
+    void setSkippedValidate(DisplayId displayId, bool skipped) override;
+    void setRequiresClientComposition(DisplayId displayId, bool requiresClientComposition) override;
+    void setExpectedPresentTime(nsecs_t expectedPresentTime) override;
+    void setSfPresentTiming(nsecs_t presentFenceTime, nsecs_t presentEndTime) override;
+    void setHwcPresentDelayedTime(
+            DisplayId displayId,
+            std::chrono::steady_clock::time_point earliestFrameStartTime) override;
+
+    void setFrameDelay(nsecs_t frameDelayDuration) override;
+    void setCommitStart(nsecs_t commitStartTime) override;
+    void setCompositeEnd(nsecs_t compositeEndTime) override;
+    void setDisplays(std::vector<DisplayId>& displayIds) override;
+    void setTotalFrameTargetWorkDuration(nsecs_t targetDuration) override;
 
 private:
+    friend class PowerAdvisorTest;
+
+    // Tracks if powerhal exists
+    bool mHasHal = true;
+    // Holds the hal wrapper for getPowerHal
+    std::unique_ptr<HalWrapper> mHalWrapper GUARDED_BY(mPowerHalMutex) = nullptr;
+
     HalWrapper* getPowerHal() REQUIRES(mPowerHalMutex);
     bool mReconnectPowerHal GUARDED_BY(mPowerHalMutex) = false;
     std::mutex mPowerHalMutex;
 
     std::atomic_bool mBootFinished = false;
-    std::optional<bool> mPowerHintEnabled;
-    std::optional<bool> mSupportsPowerHint;
-    bool mPowerHintSessionRunning = false;
-
-    // An adjustable safety margin which moves the "target" earlier to allow flinger to
-    // go a bit over without dropping a frame, especially since we can't measure
-    // the exact time HWC finishes composition so "actual" durations are measured
-    // from the end of present() instead, which is a bit later.
-    static constexpr const std::chrono::nanoseconds kTargetSafetyMargin = 2ms;
 
     std::unordered_set<DisplayId> mExpensiveDisplays;
     bool mNotifiedExpensiveRendering = false;
@@ -117,6 +174,110 @@
     std::atomic_bool mSendUpdateImminent = true;
     std::atomic<nsecs_t> mLastScreenUpdatedTime = 0;
     std::optional<scheduler::OneShotTimer> mScreenUpdateTimer;
+
+    // Higher-level timing data used for estimation
+    struct DisplayTimeline {
+        // The start of hwc present, or the start of validate if it happened there instead
+        nsecs_t hwcPresentStartTime = -1;
+        // The end of hwc present or validate, whichever one actually presented
+        nsecs_t hwcPresentEndTime = -1;
+        // How long the actual hwc present was delayed after hwcPresentStartTime
+        nsecs_t hwcPresentDelayDuration = 0;
+        // When we think we started waiting for the present fence after calling into hwc present and
+        // after potentially waiting for the earliest present time
+        nsecs_t presentFenceWaitStartTime = -1;
+        // How long we ran after we finished waiting for the fence but before hwc present finished
+        nsecs_t postPresentFenceHwcPresentDuration = 0;
+        // Are we likely to have waited for the present fence during composition
+        bool probablyWaitsForPresentFence = false;
+        // Estimate one frame's timeline from that of a previous frame
+        DisplayTimeline estimateTimelineFromReference(nsecs_t fenceTime, nsecs_t displayStartTime);
+    };
+
+    struct GpuTimeline {
+        nsecs_t duration = 0;
+        nsecs_t startTime = -1;
+    };
+
+    // Power hint session data recorded from the pipeline
+    struct DisplayTimingData {
+        std::unique_ptr<FenceTime> gpuEndFenceTime;
+        std::optional<nsecs_t> gpuStartTime;
+        std::optional<nsecs_t> lastValidGpuEndTime;
+        std::optional<nsecs_t> lastValidGpuStartTime;
+        std::optional<nsecs_t> hwcPresentStartTime;
+        std::optional<nsecs_t> hwcPresentEndTime;
+        std::optional<nsecs_t> hwcValidateStartTime;
+        std::optional<nsecs_t> hwcValidateEndTime;
+        std::optional<nsecs_t> hwcPresentDelayedTime;
+        bool usedClientComposition = false;
+        bool skippedValidate = false;
+        // Calculate high-level timing milestones from more granular display timing data
+        DisplayTimeline calculateDisplayTimeline(nsecs_t fenceTime);
+        // Estimate the gpu duration for a given display from previous gpu timing data
+        std::optional<GpuTimeline> estimateGpuTiming(std::optional<nsecs_t> previousEnd);
+    };
+
+    template <class T, size_t N>
+    class RingBuffer {
+        std::array<T, N> elements = {};
+        size_t mIndex = 0;
+        size_t numElements = 0;
+
+    public:
+        void append(T item) {
+            mIndex = (mIndex + 1) % N;
+            numElements = std::min(N, numElements + 1);
+            elements[mIndex] = item;
+        }
+        bool isFull() const { return numElements == N; }
+        // Allows access like [0] == current, [-1] = previous, etc..
+        T& operator[](int offset) {
+            size_t positiveOffset =
+                    static_cast<size_t>((offset % static_cast<int>(N)) + static_cast<int>(N));
+            return elements[(mIndex + positiveOffset) % N];
+        }
+    };
+
+    // Filter and sort the display ids by a given property
+    std::vector<DisplayId> getOrderedDisplayIds(std::optional<nsecs_t> DisplayTimingData::*sortBy);
+    // Estimates a frame's total work duration including gpu time.
+    // Runs either at the beginning or end of a frame, using the most recent data available
+    std::optional<nsecs_t> estimateWorkDuration(bool earlyHint);
+    // There are two different targets and actual work durations we care about,
+    // this normalizes them together and takes the max of the two
+    nsecs_t combineTimingEstimates(nsecs_t totalDuration, nsecs_t flingerDuration);
+
+    std::unordered_map<DisplayId, DisplayTimingData> mDisplayTimingData;
+
+    // Current frame's delay
+    nsecs_t mFrameDelayDuration = 0;
+    // Last frame's post-composition duration
+    nsecs_t mLastPostcompDuration = 0;
+    // Buffer of recent commit start times
+    RingBuffer<nsecs_t, 2> mCommitStartTimes;
+    // Buffer of recent expected present times
+    RingBuffer<nsecs_t, 2> mExpectedPresentTimes;
+    // Most recent present fence time, set at the end of the frame once known
+    nsecs_t mLastPresentFenceTime = -1;
+    // Most recent present fence time, set at the end of the frame once known
+    nsecs_t mLastSfPresentEndTime = -1;
+    // Target for the entire pipeline including gpu
+    std::optional<nsecs_t> mTotalFrameTargetDuration;
+    // Updated list of display IDs
+    std::vector<DisplayId> mDisplayIds;
+
+    std::optional<bool> mPowerHintEnabled;
+    std::optional<bool> mSupportsPowerHint;
+    bool mPowerHintSessionRunning = false;
+
+    // An adjustable safety margin which pads the "actual" value sent to PowerHAL,
+    // encouraging more aggressive boosting to give SurfaceFlinger a larger margin for error
+    static constexpr const std::chrono::nanoseconds kTargetSafetyMargin = 1ms;
+
+    // How long we expect hwc to run after the present call until it waits for the fence
+    static constexpr const std::chrono::nanoseconds kFenceWaitStartDelayValidated = 150us;
+    static constexpr const std::chrono::nanoseconds kFenceWaitStartDelaySkippedValidate = 250us;
 };
 
 class AidlPowerHalWrapper : public PowerAdvisor::HalWrapper {
@@ -133,50 +294,50 @@
     void restartPowerHintSession() override;
     void setPowerHintSessionThreadIds(const std::vector<int32_t>& threadIds) override;
     bool startPowerHintSession() override;
-    void setTargetWorkDuration(int64_t targetDurationNanos) override;
-    void sendActualWorkDuration(int64_t actualDurationNanos, nsecs_t timeStampNanos) override;
+    void setTargetWorkDuration(nsecs_t targetDuration) override;
+    void sendActualWorkDuration(nsecs_t actualDuration, nsecs_t timestamp) override;
     bool shouldReconnectHAL() override;
     std::vector<int32_t> getPowerHintSessionThreadIds() override;
-    std::optional<int64_t> getTargetWorkDuration() override;
+    std::optional<nsecs_t> getTargetWorkDuration() override;
 
 private:
+    friend class AidlPowerHalWrapperTest;
+
     bool checkPowerHintSessionSupported();
     void closePowerHintSession();
-    bool shouldReportActualDurationsNow();
-    bool shouldSetTargetDuration(int64_t targetDurationNanos);
+    bool shouldReportActualDurations();
+
+    // Used for testing
+    void setAllowedActualDeviation(nsecs_t);
 
     const sp<hardware::power::IPower> mPowerHal = nullptr;
     bool mHasExpensiveRendering = false;
     bool mHasDisplayUpdateImminent = false;
     // Used to indicate an error state and need for reconstruction
     bool mShouldReconnectHal = false;
-    // This is not thread safe, but is currently protected by mPowerHalMutex so it needs no lock
+
+    // Power hint session data
+
+    // Concurrent access for this is protected by mPowerHalMutex
     sp<hardware::power::IPowerHintSession> mPowerHintSession = nullptr;
     // Queue of actual durations saved to report
     std::vector<hardware::power::WorkDuration> mPowerHintQueue;
-    // The latest un-normalized values we have received for target and actual
-    int64_t mTargetDuration = kDefaultTarget.count();
-    std::optional<int64_t> mActualDuration;
+    // The latest values we have received for target and actual
+    nsecs_t mTargetDuration = kDefaultTarget.count();
+    std::optional<nsecs_t> mActualDuration;
     // The list of thread ids, stored so we can restart the session from this class if needed
     std::vector<int32_t> mPowerHintThreadIds;
-    bool mSupportsPowerHint;
+    bool mSupportsPowerHint = false;
     // Keep track of the last messages sent for rate limiter change detection
-    std::optional<int64_t> mLastActualDurationSent;
-    // timestamp of the last report we sent, used to avoid stale sessions
-    int64_t mLastActualReportTimestamp = 0;
-    int64_t mLastTargetDurationSent = kDefaultTarget.count();
-    // Whether to normalize all the actual values as error terms relative to a constant target
-    // This saves a binder call by not setting the target, and should not affect the pid values
-    static const bool sNormalizeTarget;
+    std::optional<nsecs_t> mLastActualDurationSent;
+    // Timestamp of the last report we sent, used to avoid stale sessions
+    nsecs_t mLastActualReportTimestamp = 0;
+    nsecs_t mLastTargetDurationSent = kDefaultTarget.count();
+    // Max amount the error term can vary without causing an actual value report
+    nsecs_t mAllowedActualDeviation = -1;
     // Whether we should emit ATRACE_INT data for hint sessions
     static const bool sTraceHintSessionData;
-
-    // Max percent the actual duration can vary without causing a report (eg: 0.1 = 10%)
-    static constexpr double kAllowedActualDeviationPercent = 0.1;
-    // Max percent the target duration can vary without causing a report (eg: 0.1 = 10%)
-    static constexpr double kAllowedTargetDeviationPercent = 0.1;
-    // Target used for init and normalization, the actual value does not really matter
-    static constexpr const std::chrono::nanoseconds kDefaultTarget = 50ms;
+    static constexpr const std::chrono::nanoseconds kDefaultTarget = 16ms;
     // Amount of time after the last message was sent before the session goes stale
     // actually 100ms but we use 80 here to ideally avoid going stale
     static constexpr const std::chrono::nanoseconds kStaleTimeout = 80ms;
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 38662bd..0c4b012 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -81,6 +81,7 @@
 namespace android {
 namespace {
 constexpr int kDumpTableRowLength = 159;
+const ui::Transform kIdentityTransform;
 } // namespace
 
 using namespace ftl::flag_operators;
@@ -2164,7 +2165,8 @@
     if ((traceFlags & LayerTracing::TRACE_INPUT) && needsInputInfo()) {
         WindowInfo info;
         if (useDrawing) {
-            info = fillInputInfo(ui::Transform(), /* displayIsSecure */ true);
+            info = fillInputInfo(
+                    InputDisplayArgs{.transform = &kIdentityTransform, .isSecure = true});
         } else {
             info = state.inputInfo;
         }
@@ -2371,7 +2373,7 @@
     }
 }
 
-WindowInfo Layer::fillInputInfo(const ui::Transform& displayTransform, bool displayIsSecure) {
+WindowInfo Layer::fillInputInfo(const InputDisplayArgs& displayArgs) {
     if (!hasInputInfo()) {
         mDrawingState.inputInfo.name = getName();
         mDrawingState.inputInfo.ownerUid = mOwnerUid;
@@ -2380,12 +2382,21 @@
         mDrawingState.inputInfo.displayId = getLayerStack().id;
     }
 
+    const ui::Transform& displayTransform =
+            displayArgs.transform != nullptr ? *displayArgs.transform : kIdentityTransform;
+
     WindowInfo info = mDrawingState.inputInfo;
     info.id = sequence;
     info.displayId = getLayerStack().id;
 
     fillInputFrameInfo(info, displayTransform);
 
+    if (displayArgs.transform == nullptr) {
+        // Do not let the window receive touches if it is not associated with a valid display
+        // transform. We still allow the window to receive keys and prevent ANRs.
+        info.inputConfig |= WindowInfo::InputConfig::NOT_TOUCHABLE;
+    }
+
     // For compatibility reasons we let layers which can receive input
     // receive input before they have actually submitted a buffer. Because
     // of this we use canReceiveInput instead of isVisible to check the
@@ -2403,7 +2414,7 @@
 
     // If the window will be blacked out on a display because the display does not have the secure
     // flag and the layer has the secure flag set, then drop input.
-    if (!displayIsSecure && isSecure()) {
+    if (!displayArgs.isSecure && isSecure()) {
         info.inputConfig |= WindowInfo::InputConfig::DROP_INPUT;
     }
 
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 24abad9..c547da0 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -844,7 +844,11 @@
     bool getPremultipledAlpha() const;
     void setInputInfo(const gui::WindowInfo& info);
 
-    gui::WindowInfo fillInputInfo(const ui::Transform& displayTransform, bool displayIsSecure);
+    struct InputDisplayArgs {
+        const ui::Transform* transform = nullptr;
+        bool isSecure = false;
+    };
+    gui::WindowInfo fillInputInfo(const InputDisplayArgs& displayArgs);
 
     /**
      * Returns whether this layer has an explicitly set input-info.
diff --git a/services/surfaceflinger/RefreshRateOverlay.cpp b/services/surfaceflinger/RefreshRateOverlay.cpp
index d4435c2..a9180d4 100644
--- a/services/surfaceflinger/RefreshRateOverlay.cpp
+++ b/services/surfaceflinger/RefreshRateOverlay.cpp
@@ -16,9 +16,10 @@
 
 #include <algorithm>
 
-#include "RefreshRateOverlay.h"
+#include "BackgroundExecutor.h"
 #include "Client.h"
 #include "Layer.h"
+#include "RefreshRateOverlay.h"
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wconversion"
@@ -56,6 +57,14 @@
 
 } // namespace
 
+SurfaceControlHolder::~SurfaceControlHolder() {
+    // Hand the sp<SurfaceControl> to the helper thread to release the last
+    // reference. This makes sure that the SurfaceControl is destructed without
+    // SurfaceFlinger::mStateLock held.
+    BackgroundExecutor::getInstance().sendCallbacks(
+            {[sc = std::move(mSurfaceControl)]() mutable { sc.clear(); }});
+}
+
 void RefreshRateOverlay::SevenSegmentDrawer::drawSegment(Segment segment, int left, SkColor color,
                                                          SkCanvas& canvas) {
     const SkRect rect = [&]() {
@@ -210,21 +219,27 @@
     return buffers;
 }
 
+std::unique_ptr<SurfaceControlHolder> createSurfaceControlHolder() {
+    sp<SurfaceControl> surfaceControl =
+            SurfaceComposerClient::getDefault()
+                    ->createSurface(String8("RefreshRateOverlay"), kBufferWidth, kBufferHeight,
+                                    PIXEL_FORMAT_RGBA_8888,
+                                    ISurfaceComposerClient::eFXSurfaceBufferState);
+    return std::make_unique<SurfaceControlHolder>(std::move(surfaceControl));
+}
+
 RefreshRateOverlay::RefreshRateOverlay(FpsRange fpsRange, bool showSpinner)
       : mFpsRange(fpsRange),
         mShowSpinner(showSpinner),
-        mSurfaceControl(SurfaceComposerClient::getDefault()
-                                ->createSurface(String8("RefreshRateOverlay"), kBufferWidth,
-                                                kBufferHeight, PIXEL_FORMAT_RGBA_8888,
-                                                ISurfaceComposerClient::eFXSurfaceBufferState)) {
+        mSurfaceControl(createSurfaceControlHolder()) {
     if (!mSurfaceControl) {
         ALOGE("%s: Failed to create buffer state layer", __func__);
         return;
     }
 
-    createTransaction(mSurfaceControl)
-            .setLayer(mSurfaceControl, INT32_MAX - 2)
-            .setTrustedOverlay(mSurfaceControl, true)
+    createTransaction(mSurfaceControl->get())
+            .setLayer(mSurfaceControl->get(), INT32_MAX - 2)
+            .setTrustedOverlay(mSurfaceControl->get(), true)
             .apply();
 }
 
@@ -233,7 +248,7 @@
     if (!mSurfaceControl) return kNoBuffers;
 
     const auto transformHint =
-            static_cast<ui::Transform::RotationFlags>(mSurfaceControl->getTransformHint());
+            static_cast<ui::Transform::RotationFlags>(mSurfaceControl->get()->getTransformHint());
 
     // Tell SurfaceFlinger about the pre-rotation on the buffer.
     const auto transform = [&] {
@@ -247,7 +262,9 @@
         }
     }();
 
-    createTransaction(mSurfaceControl).setTransform(mSurfaceControl, transform).apply();
+    createTransaction(mSurfaceControl->get())
+            .setTransform(mSurfaceControl->get(), transform)
+            .apply();
 
     BufferCache::const_iterator it = mBufferCache.find({fps.getIntValue(), transformHint});
     if (it == mBufferCache.end()) {
@@ -289,21 +306,21 @@
     Rect frame((3 * width) >> 4, height >> 5);
     frame.offsetBy(width >> 5, height >> 4);
 
-    createTransaction(mSurfaceControl)
-            .setMatrix(mSurfaceControl, frame.getWidth() / static_cast<float>(kBufferWidth), 0, 0,
-                       frame.getHeight() / static_cast<float>(kBufferHeight))
-            .setPosition(mSurfaceControl, frame.left, frame.top)
+    createTransaction(mSurfaceControl->get())
+            .setMatrix(mSurfaceControl->get(), frame.getWidth() / static_cast<float>(kBufferWidth),
+                       0, 0, frame.getHeight() / static_cast<float>(kBufferHeight))
+            .setPosition(mSurfaceControl->get(), frame.left, frame.top)
             .apply();
 }
 
 void RefreshRateOverlay::setLayerStack(ui::LayerStack stack) {
-    createTransaction(mSurfaceControl).setLayerStack(mSurfaceControl, stack).apply();
+    createTransaction(mSurfaceControl->get()).setLayerStack(mSurfaceControl->get(), stack).apply();
 }
 
 void RefreshRateOverlay::changeRefreshRate(Fps fps) {
     mCurrentFps = fps;
     const auto buffer = getOrCreateBuffers(fps)[mFrame];
-    createTransaction(mSurfaceControl).setBuffer(mSurfaceControl, buffer).apply();
+    createTransaction(mSurfaceControl->get()).setBuffer(mSurfaceControl->get(), buffer).apply();
 }
 
 void RefreshRateOverlay::animate() {
@@ -312,7 +329,7 @@
     const auto& buffers = getOrCreateBuffers(*mCurrentFps);
     mFrame = (mFrame + 1) % buffers.size();
     const auto buffer = buffers[mFrame];
-    createTransaction(mSurfaceControl).setBuffer(mSurfaceControl, buffer).apply();
+    createTransaction(mSurfaceControl->get()).setBuffer(mSurfaceControl->get(), buffer).apply();
 }
 
 } // namespace android
diff --git a/services/surfaceflinger/RefreshRateOverlay.h b/services/surfaceflinger/RefreshRateOverlay.h
index a465a36..a2966e6 100644
--- a/services/surfaceflinger/RefreshRateOverlay.h
+++ b/services/surfaceflinger/RefreshRateOverlay.h
@@ -33,6 +33,20 @@
 
 class GraphicBuffer;
 class SurfaceControl;
+class SurfaceFlinger;
+
+// Helper class to delete the SurfaceControl on a helper thread as
+// SurfaceControl assumes its destruction happens without SurfaceFlinger::mStateLock held.
+class SurfaceControlHolder {
+public:
+    explicit SurfaceControlHolder(sp<SurfaceControl> sc) : mSurfaceControl(std::move(sc)){};
+    ~SurfaceControlHolder();
+
+    const sp<SurfaceControl>& get() const { return mSurfaceControl; }
+
+private:
+    sp<SurfaceControl> mSurfaceControl;
+};
 
 class RefreshRateOverlay {
 public:
@@ -75,7 +89,7 @@
     const FpsRange mFpsRange; // For color interpolation.
     const bool mShowSpinner;
 
-    const sp<SurfaceControl> mSurfaceControl;
+    const std::unique_ptr<SurfaceControlHolder> mSurfaceControl;
 };
 
 } // namespace android
diff --git a/services/surfaceflinger/Scheduler/DispSyncSource.cpp b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
index 747032b..4af1f5c 100644
--- a/services/surfaceflinger/Scheduler/DispSyncSource.cpp
+++ b/services/surfaceflinger/Scheduler/DispSyncSource.cpp
@@ -188,10 +188,10 @@
 
 VSyncSource::VSyncData DispSyncSource::getLatestVSyncData() const {
     std::lock_guard lock(mVsyncMutex);
-    nsecs_t expectedPresentTime = mVSyncTracker.nextAnticipatedVSyncTimeFrom(
+    nsecs_t expectedPresentationTime = mVSyncTracker.nextAnticipatedVSyncTimeFrom(
             systemTime() + mWorkDuration.get().count() + mReadyDuration.count());
-    nsecs_t deadline = expectedPresentTime - mWorkDuration.get().count() - mReadyDuration.count();
-    return {expectedPresentTime, deadline};
+    nsecs_t deadline = expectedPresentationTime - mReadyDuration.count();
+    return {expectedPresentationTime, deadline};
 }
 
 void DispSyncSource::dump(std::string& result) const {
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
index ca83496..a48c921 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.cpp
@@ -40,22 +40,26 @@
 
 struct RefreshRateScore {
     DisplayModeIterator modeIt;
-    float score;
+    float overallScore;
+    struct {
+        float modeBelowThreshold;
+        float modeAboveThreshold;
+    } fixedRateBelowThresholdLayersScore;
 };
 
 template <typename Iterator>
 const DisplayModePtr& getMaxScoreRefreshRate(Iterator begin, Iterator end) {
     const auto it =
             std::max_element(begin, end, [](RefreshRateScore max, RefreshRateScore current) {
-                const auto& [modeIt, score] = current;
+                const auto& [modeIt, overallScore, _] = current;
 
                 std::string name = to_string(modeIt->second->getFps());
-                ALOGV("%s scores %.2f", name.c_str(), score);
+                ALOGV("%s scores %.2f", name.c_str(), overallScore);
 
-                ATRACE_INT(name.c_str(), static_cast<int>(std::round(score * 100)));
+                ATRACE_INT(name.c_str(), static_cast<int>(std::round(overallScore * 100)));
 
                 constexpr float kEpsilon = 0.0001f;
-                return score > max.score * (1 + kEpsilon);
+                return overallScore > max.overallScore * (1 + kEpsilon);
             });
 
     return it->modeIt->second;
@@ -151,31 +155,6 @@
     return {quotient, remainder};
 }
 
-bool RefreshRateConfigs::isVoteAllowed(const LayerRequirement& layer, Fps refreshRate) const {
-    using namespace fps_approx_ops;
-
-    switch (layer.vote) {
-        case LayerVoteType::ExplicitExactOrMultiple:
-        case LayerVoteType::Heuristic:
-            if (mConfig.frameRateMultipleThreshold != 0 &&
-                refreshRate >= Fps::fromValue(mConfig.frameRateMultipleThreshold) &&
-                layer.desiredRefreshRate < Fps::fromValue(mConfig.frameRateMultipleThreshold / 2)) {
-                // Don't vote high refresh rates past the threshold for layers with a low desired
-                // refresh rate. For example, desired 24 fps with 120 Hz threshold means no vote for
-                // 120 Hz, but desired 60 fps should have a vote.
-                return false;
-            }
-            break;
-        case LayerVoteType::ExplicitDefault:
-        case LayerVoteType::ExplicitExact:
-        case LayerVoteType::Max:
-        case LayerVoteType::Min:
-        case LayerVoteType::NoVote:
-            break;
-    }
-    return true;
-}
-
 float RefreshRateConfigs::calculateNonExactMatchingLayerScoreLocked(const LayerRequirement& layer,
                                                                     Fps refreshRate) const {
     constexpr float kScoreForFractionalPairs = .8f;
@@ -240,10 +219,6 @@
 
 float RefreshRateConfigs::calculateLayerScoreLocked(const LayerRequirement& layer, Fps refreshRate,
                                                     bool isSeamlessSwitch) const {
-    if (!isVoteAllowed(layer, refreshRate)) {
-        return 0;
-    }
-
     // Slightly prefer seamless switches.
     constexpr float kSeamedSwitchPenalty = 0.95f;
     const float seamlessness = isSeamlessSwitch ? 1.0f : kSeamedSwitchPenalty;
@@ -300,6 +275,7 @@
 auto RefreshRateConfigs::getBestRefreshRateLocked(const std::vector<LayerRequirement>& layers,
                                                   GlobalSignals signals) const
         -> std::pair<DisplayModePtr, GlobalSignals> {
+    using namespace fps_approx_ops;
     ATRACE_CALL();
     ALOGV("%s: %zu layers", __func__, layers.size());
 
@@ -409,7 +385,7 @@
 
         const auto weight = layer.weight;
 
-        for (auto& [modeIt, score] : scores) {
+        for (auto& [modeIt, overallScore, fixedRateBelowThresholdLayersScore] : scores) {
             const auto& [id, mode] = *modeIt;
             const bool isSeamlessSwitch = mode->getGroup() == mActiveModeIt->second->getGroup();
 
@@ -451,18 +427,92 @@
                 continue;
             }
 
-            const auto layerScore =
+            const float layerScore =
                     calculateLayerScoreLocked(layer, mode->getFps(), isSeamlessSwitch);
-            ALOGV("%s gives %s score of %.4f", formatLayerInfo(layer, weight).c_str(),
-                  to_string(mode->getFps()).c_str(), layerScore);
+            const float weightedLayerScore = weight * layerScore;
 
-            score += weight * layerScore;
+            // Layer with fixed source has a special consideration which depends on the
+            // mConfig.frameRateMultipleThreshold. We don't want these layers to score
+            // refresh rates above the threshold, but we also don't want to favor the lower
+            // ones by having a greater number of layers scoring them. Instead, we calculate
+            // the score independently for these layers and later decide which
+            // refresh rates to add it. For example, desired 24 fps with 120 Hz threshold should not
+            // score 120 Hz, but desired 60 fps should contribute to the score.
+            const bool fixedSourceLayer = [](LayerVoteType vote) {
+                switch (vote) {
+                    case LayerVoteType::ExplicitExactOrMultiple:
+                    case LayerVoteType::Heuristic:
+                        return true;
+                    case LayerVoteType::NoVote:
+                    case LayerVoteType::Min:
+                    case LayerVoteType::Max:
+                    case LayerVoteType::ExplicitDefault:
+                    case LayerVoteType::ExplicitExact:
+                        return false;
+                }
+            }(layer.vote);
+            const bool layerBelowThreshold = mConfig.frameRateMultipleThreshold != 0 &&
+                    layer.desiredRefreshRate <
+                            Fps::fromValue(mConfig.frameRateMultipleThreshold / 2);
+            if (fixedSourceLayer && layerBelowThreshold) {
+                const bool modeAboveThreshold =
+                        mode->getFps() >= Fps::fromValue(mConfig.frameRateMultipleThreshold);
+                if (modeAboveThreshold) {
+                    ALOGV("%s gives %s fixed source (above threshold) score of %.4f",
+                          formatLayerInfo(layer, weight).c_str(), to_string(mode->getFps()).c_str(),
+                          layerScore);
+                    fixedRateBelowThresholdLayersScore.modeAboveThreshold += weightedLayerScore;
+                } else {
+                    ALOGV("%s gives %s fixed source (below threshold) score of %.4f",
+                          formatLayerInfo(layer, weight).c_str(), to_string(mode->getFps()).c_str(),
+                          layerScore);
+                    fixedRateBelowThresholdLayersScore.modeBelowThreshold += weightedLayerScore;
+                }
+            } else {
+                ALOGV("%s gives %s score of %.4f", formatLayerInfo(layer, weight).c_str(),
+                      to_string(mode->getFps()).c_str(), layerScore);
+                overallScore += weightedLayerScore;
+            }
         }
     }
 
-    // Now that we scored all the refresh rates we need to pick the one that got the highest score.
-    // In case of a tie we will pick the higher refresh rate if any of the layers wanted Max,
-    // or the lower otherwise.
+    // We want to find the best refresh rate without the fixed source layers,
+    // so we could know whether we should add the modeAboveThreshold scores or not.
+    // If the best refresh rate is already above the threshold, it means that
+    // some non-fixed source layers already scored it, so we can just add the score
+    // for all fixed source layers, even the ones that are above the threshold.
+    const bool maxScoreAboveThreshold = [&] {
+        if (mConfig.frameRateMultipleThreshold == 0 || scores.empty()) {
+            return false;
+        }
+
+        const auto maxScoreIt =
+                std::max_element(scores.begin(), scores.end(),
+                                 [](RefreshRateScore max, RefreshRateScore current) {
+                                     const auto& [modeIt, overallScore, _] = current;
+                                     return overallScore > max.overallScore;
+                                 });
+        ALOGV("%s is the best refresh rate without fixed source layers. It is %s the threshold for "
+              "refresh rate multiples",
+              to_string(maxScoreIt->modeIt->second->getFps()).c_str(),
+              maxScoreAboveThreshold ? "above" : "below");
+        return maxScoreIt->modeIt->second->getFps() >=
+                Fps::fromValue(mConfig.frameRateMultipleThreshold);
+    }();
+
+    // Now we can add the fixed rate layers score
+    for (auto& [modeIt, overallScore, fixedRateBelowThresholdLayersScore] : scores) {
+        overallScore += fixedRateBelowThresholdLayersScore.modeBelowThreshold;
+        if (maxScoreAboveThreshold) {
+            overallScore += fixedRateBelowThresholdLayersScore.modeAboveThreshold;
+        }
+        ALOGV("%s adjusted overallScore is %.4f", to_string(modeIt->second->getFps()).c_str(),
+              overallScore);
+    }
+
+    // Now that we scored all the refresh rates we need to pick the one that got the highest
+    // overallScore. In case of a tie we will pick the higher refresh rate if any of the layers
+    // wanted Max, or the lower otherwise.
     const DisplayModePtr& bestRefreshRate = maxVoteLayers > 0
             ? getMaxScoreRefreshRate(scores.rbegin(), scores.rend())
             : getMaxScoreRefreshRate(scores.begin(), scores.end());
@@ -471,7 +521,7 @@
         // If we never scored any layers, then choose the rate from the primary
         // range instead of picking a random score from the app range.
         if (std::all_of(scores.begin(), scores.end(),
-                        [](RefreshRateScore score) { return score.score == 0; })) {
+                        [](RefreshRateScore score) { return score.overallScore == 0; })) {
             const DisplayModePtr& max = getMaxRefreshRateByPolicyLocked(anchorGroup);
             ALOGV("layers not scored - choose %s", to_string(max->getFps()).c_str());
             return {max, kNoSignals};
@@ -575,7 +625,7 @@
             continue;
         }
 
-        for (auto& [_, score] : scores) {
+        for (auto& [_, score, _1] : scores) {
             score = 0;
         }
 
@@ -587,7 +637,7 @@
             LOG_ALWAYS_FATAL_IF(layer->vote != LayerVoteType::ExplicitDefault &&
                                 layer->vote != LayerVoteType::ExplicitExactOrMultiple &&
                                 layer->vote != LayerVoteType::ExplicitExact);
-            for (auto& [modeIt, score] : scores) {
+            for (auto& [modeIt, score, _] : scores) {
                 constexpr bool isSeamlessSwitch = true;
                 const auto layerScore = calculateLayerScoreLocked(*layer, modeIt->second->getFps(),
                                                                   isSeamlessSwitch);
@@ -605,7 +655,7 @@
 
         // If we never scored any layers, we don't have a preferred frame rate
         if (std::all_of(scores.begin(), scores.end(),
-                        [](RefreshRateScore score) { return score.score == 0; })) {
+                        [](RefreshRateScore score) { return score.overallScore == 0; })) {
             continue;
         }
 
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
index 05a8692..a79002e 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
@@ -353,9 +353,6 @@
     const Policy* getCurrentPolicyLocked() const REQUIRES(mLock);
     bool isPolicyValidLocked(const Policy& policy) const REQUIRES(mLock);
 
-    // Returns whether the layer is allowed to vote for the given refresh rate.
-    bool isVoteAllowed(const LayerRequirement&, Fps) const;
-
     // calculates a score for a layer. Used to determine the display refresh rate
     // and the frame rate override for certains applications.
     float calculateLayerScoreLocked(const LayerRequirement&, Fps refreshRate,
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 37f0fec..727cb08 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -25,6 +25,7 @@
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
 #include <configstore/Utils.h>
+#include <ftl/fake_guard.h>
 #include <gui/WindowInfo.h>
 #include <system/window.h>
 #include <ui/DisplayStatInfo.h>
@@ -94,9 +95,13 @@
 }
 
 void Scheduler::setRefreshRateConfigs(std::shared_ptr<RefreshRateConfigs> configs) {
+    // The current RefreshRateConfigs instance may outlive this call, so unbind its idle timer.
     {
-        // The current RefreshRateConfigs instance may outlive this call, so unbind its idle timer.
-        std::scoped_lock lock(mRefreshRateConfigsLock);
+        // mRefreshRateConfigsLock is not locked here to avoid the deadlock
+        // as the callback can attempt to acquire the lock before stopIdleTimer can finish
+        // the execution. It's safe to FakeGuard as main thread is the only thread that
+        // writes to the mRefreshRateConfigs.
+        ftl::FakeGuard guard(mRefreshRateConfigsLock);
         if (mRefreshRateConfigs) {
             mRefreshRateConfigs->stopIdleTimer();
             mRefreshRateConfigs->clearIdleTimerCallbacks();
@@ -554,11 +559,12 @@
     }
 }
 
-void Scheduler::setDisplayPowerState(bool normal) {
+void Scheduler::setDisplayPowerMode(hal::PowerMode powerMode) {
     {
         std::lock_guard<std::mutex> lock(mPolicyLock);
-        mPolicy.isDisplayPowerStateNormal = normal;
+        mPolicy.displayPowerMode = powerMode;
     }
+    mVsyncSchedule->getController().setDisplayPowerMode(powerMode);
 
     if (mDisplayPowerTimer) {
         mDisplayPowerTimer->reset();
@@ -706,7 +712,8 @@
     // 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 (mDisplayPowerTimer &&
-        (!mPolicy.isDisplayPowerStateNormal || mPolicy.displayPowerTimer == TimerState::Reset)) {
+        (mPolicy.displayPowerMode != hal::PowerMode::ON ||
+         mPolicy.displayPowerTimer == TimerState::Reset)) {
         constexpr GlobalSignals kNoSignals;
         return {configs->getMaxRefreshRateByPolicy(), kNoSignals};
     }
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 0c72124..a8043bf 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -186,7 +186,7 @@
     // Indicates that touch interaction is taking place.
     void onTouchHint();
 
-    void setDisplayPowerState(bool normal);
+    void setDisplayPowerMode(hal::PowerMode powerMode);
 
     VSyncDispatch& getVsyncDispatch() { return mVsyncSchedule->getDispatch(); }
 
@@ -325,7 +325,7 @@
         TimerState idleTimer = TimerState::Reset;
         TouchState touch = TouchState::Inactive;
         TimerState displayPowerTimer = TimerState::Expired;
-        bool isDisplayPowerStateNormal = true;
+        hal::PowerMode displayPowerMode = hal::PowerMode::ON;
 
         // Chosen display mode.
         DisplayModePtr mode;
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.cpp b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
index 665a7ee..e23945d 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.cpp
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.cpp
@@ -147,6 +147,11 @@
         return false;
     }
 
+    if (mDisplayPowerMode == hal::PowerMode::DOZE ||
+        mDisplayPowerMode == hal::PowerMode::DOZE_SUSPEND) {
+        return true;
+    }
+
     if (!mLastHwVsync && !HwcVsyncPeriod) {
         return false;
     }
@@ -207,6 +212,11 @@
     return mMoreSamplesNeeded;
 }
 
+void VSyncReactor::setDisplayPowerMode(hal::PowerMode powerMode) {
+    std::scoped_lock lock(mMutex);
+    mDisplayPowerMode = powerMode;
+}
+
 void VSyncReactor::dump(std::string& result) const {
     std::lock_guard lock(mMutex);
     StringAppendF(&result, "VsyncReactor in use\n");
diff --git a/services/surfaceflinger/Scheduler/VSyncReactor.h b/services/surfaceflinger/Scheduler/VSyncReactor.h
index 6a1950a..4501487 100644
--- a/services/surfaceflinger/Scheduler/VSyncReactor.h
+++ b/services/surfaceflinger/Scheduler/VSyncReactor.h
@@ -49,6 +49,8 @@
     bool addHwVsyncTimestamp(nsecs_t timestamp, std::optional<nsecs_t> hwcVsyncPeriod,
                              bool* periodFlushed) final;
 
+    void setDisplayPowerMode(hal::PowerMode powerMode) final;
+
     void dump(std::string& result) const final;
 
 private:
@@ -73,6 +75,8 @@
     std::optional<nsecs_t> mPeriodTransitioningTo GUARDED_BY(mMutex);
     std::optional<nsecs_t> mLastHwVsync GUARDED_BY(mMutex);
 
+    hal::PowerMode mDisplayPowerMode GUARDED_BY(mMutex) = hal::PowerMode::ON;
+
     const bool mSupportKernelIdleTimer = false;
 };
 
diff --git a/services/surfaceflinger/Scheduler/VsyncController.h b/services/surfaceflinger/Scheduler/VsyncController.h
index 59f6537..726a420 100644
--- a/services/surfaceflinger/Scheduler/VsyncController.h
+++ b/services/surfaceflinger/Scheduler/VsyncController.h
@@ -18,7 +18,10 @@
 
 #include <cstddef>
 #include <memory>
+#include <mutex>
 
+#include <DisplayHardware/HWComposer.h>
+#include <DisplayHardware/Hal.h>
 #include <ui/FenceTime.h>
 #include <utils/Mutex.h>
 #include <utils/RefBase.h>
@@ -70,6 +73,13 @@
      */
     virtual void setIgnorePresentFences(bool ignore) = 0;
 
+    /*
+     * Sets the primary display power mode to the controller.
+     *
+     * \param [in] powerMode
+     */
+    virtual void setDisplayPowerMode(hal::PowerMode powerMode) = 0;
+
     virtual void dump(std::string& result) const = 0;
 
 protected:
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 2fa40a5..e228468 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -445,6 +445,11 @@
     }
 
     mIgnoreHdrCameraLayers = ignore_hdr_camera_layers(false);
+
+    // Power hint session mode, representing which hint(s) to send: early, late, or both)
+    mPowerHintSessionMode =
+            {.late = base::GetBoolProperty("debug.sf.send_late_power_session_hint"s, true),
+             .early = base::GetBoolProperty("debug.sf.send_early_power_session_hint"s, false)};
 }
 
 LatchUnsignaledConfig SurfaceFlinger::getLatchUnsignaledConfig() {
@@ -2000,12 +2005,6 @@
 
 bool SurfaceFlinger::commit(nsecs_t frameTime, int64_t vsyncId, nsecs_t expectedVsyncTime)
         FTL_FAKE_GUARD(kMainThreadContext) {
-    // we set this once at the beginning of commit to ensure consistency throughout the whole frame
-    mPowerHintSessionData.sessionEnabled = mPowerAdvisor->usePowerHintSession();
-    if (mPowerHintSessionData.sessionEnabled) {
-        mPowerHintSessionData.commitStart = systemTime();
-    }
-
     // calculate the expected present time once and use the cached
     // value throughout this frame to make sure all layers are
     // seeing this same value.
@@ -2019,10 +2018,6 @@
     const nsecs_t lastScheduledPresentTime = mScheduledPresentTime;
     mScheduledPresentTime = expectedVsyncTime;
 
-    if (mPowerHintSessionData.sessionEnabled) {
-        mPowerAdvisor->setTargetWorkDuration(mExpectedPresentTime -
-                                             mPowerHintSessionData.commitStart);
-    }
     const auto vsyncIn = [&] {
         if (!ATRACE_ENABLED()) return 0.f;
         return (mExpectedPresentTime - systemTime()) / 1e6f;
@@ -2098,6 +2093,32 @@
         }
     }
 
+    // Save this once per commit + composite to ensure consistency
+    // TODO (b/240619471): consider removing active display check once AOD is fixed
+    const auto activeDisplay =
+            FTL_FAKE_GUARD(mStateLock, getDisplayDeviceLocked(mActiveDisplayToken));
+    mPowerHintSessionEnabled = mPowerAdvisor->usePowerHintSession() && activeDisplay &&
+            activeDisplay->getPowerMode() == hal::PowerMode::ON;
+    if (mPowerHintSessionEnabled) {
+        const auto& display = FTL_FAKE_GUARD(mStateLock, getDefaultDisplayDeviceLocked()).get();
+        // get stable vsync period from display mode
+        const nsecs_t vsyncPeriod = display->getActiveMode()->getVsyncPeriod();
+        mPowerAdvisor->setCommitStart(frameTime);
+        mPowerAdvisor->setExpectedPresentTime(mExpectedPresentTime);
+        const nsecs_t idealSfWorkDuration =
+                mVsyncModulator->getVsyncConfig().sfWorkDuration.count();
+        // Frame delay is how long we should have minus how long we actually have
+        mPowerAdvisor->setFrameDelay(idealSfWorkDuration - (mExpectedPresentTime - frameTime));
+        mPowerAdvisor->setTotalFrameTargetWorkDuration(idealSfWorkDuration);
+        mPowerAdvisor->setTargetWorkDuration(vsyncPeriod);
+
+        // Send early hint here to make sure there's not another frame pending
+        if (mPowerHintSessionMode.early) {
+            // Send a rough prediction for this frame based on last frame's timing info
+            mPowerAdvisor->sendPredictedWorkDuration();
+        }
+    }
+
     if (mTracingEnabledChanged) {
         mLayerTracingEnabled = mLayerTracing.isEnabled();
         mTracingEnabledChanged = false;
@@ -2174,16 +2195,15 @@
         FTL_FAKE_GUARD(kMainThreadContext) {
     ATRACE_FORMAT("%s %" PRId64, __func__, vsyncId);
 
-    if (mPowerHintSessionData.sessionEnabled) {
-        mPowerHintSessionData.compositeStart = systemTime();
-    }
-
     compositionengine::CompositionRefreshArgs refreshArgs;
     const auto& displays = FTL_FAKE_GUARD(mStateLock, mDisplays);
     refreshArgs.outputs.reserve(displays.size());
+    std::vector<DisplayId> displayIds;
     for (const auto& [_, display] : displays) {
         refreshArgs.outputs.push_back(display->getCompositionDisplay());
+        displayIds.push_back(display->getId());
     }
+    mPowerAdvisor->setDisplays(displayIds);
     mDrawingState.traverseInZOrder([&refreshArgs](Layer* layer) {
         if (auto layerFE = layer->getCompositionEngineLayerFE())
             refreshArgs.layers.push_back(layerFE);
@@ -2231,12 +2251,17 @@
 
     mCompositionEngine->present(refreshArgs);
 
-    if (mPowerHintSessionData.sessionEnabled) {
-        mPowerHintSessionData.presentEnd = systemTime();
-    }
-
     mTimeStats->recordFrameDuration(frameTime, systemTime());
 
+    // Send a power hint hint after presentation is finished
+    if (mPowerHintSessionEnabled) {
+        mPowerAdvisor->setSfPresentTiming(mPreviousPresentFences[0].fenceTime->getSignalTime(),
+                                          systemTime());
+        if (mPowerHintSessionMode.late) {
+            mPowerAdvisor->sendActualWorkDuration();
+        }
+    }
+
     if (mScheduler->onPostComposition(presentTime)) {
         scheduleComposite(FrameHint::kNone);
     }
@@ -2281,11 +2306,8 @@
         scheduleCommit(FrameHint::kNone);
     }
 
-    // calculate total render time for performance hinting if adpf cpu hint is enabled,
-    if (mPowerHintSessionData.sessionEnabled) {
-        const nsecs_t flingerDuration =
-                (mPowerHintSessionData.presentEnd - mPowerHintSessionData.commitStart);
-        mPowerAdvisor->sendActualWorkDuration(flingerDuration, mPowerHintSessionData.presentEnd);
+    if (mPowerHintSessionEnabled) {
+        mPowerAdvisor->setCompositeEnd(systemTime());
     }
 }
 
@@ -2879,7 +2901,8 @@
     ALOGV("Display Orientation: %s", toCString(creationArgs.physicalOrientation));
 
     // virtual displays are always considered enabled
-    creationArgs.initialPowerMode = state.isVirtual() ? hal::PowerMode::ON : hal::PowerMode::OFF;
+    creationArgs.initialPowerMode =
+            state.isVirtual() ? std::make_optional(hal::PowerMode::ON) : std::nullopt;
 
     sp<DisplayDevice> display = getFactory().createDisplayDevice(creationArgs);
 
@@ -3322,11 +3345,11 @@
     mDrawingState.traverseInReverseZOrder([&](Layer* layer) {
         if (!layer->needsInputInfo()) return;
 
-        // Do not create WindowInfos for windows on displays that cannot receive input.
-        if (const auto opt = displayInputInfos.get(layer->getLayerStack())) {
-            const auto& info = opt->get();
-            outWindowInfos.push_back(layer->fillInputInfo(info.transform, info.isSecure));
-        }
+        const auto opt = displayInputInfos.get(layer->getLayerStack(),
+                                               [](const auto& info) -> Layer::InputDisplayArgs {
+                                                   return {&info.transform, info.isSecure};
+                                               });
+        outWindowInfos.push_back(layer->fillInputInfo(opt.value_or(Layer::InputDisplayArgs{})));
     });
 
     sNumWindowInfos = outWindowInfos.size();
@@ -4860,8 +4883,8 @@
     const auto displayId = display->getPhysicalId();
     ALOGD("Setting power mode %d on display %s", mode, to_string(displayId).c_str());
 
-    const hal::PowerMode currentMode = display->getPowerMode();
-    if (mode == currentMode) {
+    std::optional<hal::PowerMode> currentMode = display->getPowerMode();
+    if (currentMode.has_value() && mode == *currentMode) {
         return;
     }
 
@@ -4877,7 +4900,7 @@
         mInterceptor->savePowerModeUpdate(display->getSequenceId(), static_cast<int32_t>(mode));
     }
     const auto refreshRate = display->refreshRateConfigs().getActiveMode()->getFps();
-    if (currentMode == hal::PowerMode::OFF) {
+    if (*currentMode == hal::PowerMode::OFF) {
         // Turn on the display
         if (display->isInternal() && (!activeDisplay || !activeDisplay->isPoweredOn())) {
             onActiveDisplayChangedLocked(display);
@@ -4908,7 +4931,7 @@
         if (SurfaceFlinger::setSchedAttr(false) != NO_ERROR) {
             ALOGW("Couldn't set uclamp.min on display off: %s\n", strerror(errno));
         }
-        if (isDisplayActiveLocked(display) && currentMode != hal::PowerMode::DOZE_SUSPEND) {
+        if (isDisplayActiveLocked(display) && *currentMode != hal::PowerMode::DOZE_SUSPEND) {
             mScheduler->disableHardwareVsync(true);
             mScheduler->onScreenReleased(mAppConnectionHandle);
         }
@@ -4922,7 +4945,7 @@
     } else if (mode == hal::PowerMode::DOZE || mode == hal::PowerMode::ON) {
         // Update display while dozing
         getHwComposer().setPowerMode(displayId, mode);
-        if (isDisplayActiveLocked(display) && currentMode == hal::PowerMode::DOZE_SUSPEND) {
+        if (isDisplayActiveLocked(display) && *currentMode == hal::PowerMode::DOZE_SUSPEND) {
             mScheduler->onScreenAcquired(mAppConnectionHandle);
             mScheduler->resyncToHardwareVsync(true, refreshRate);
         }
@@ -4941,7 +4964,7 @@
     if (isDisplayActiveLocked(display)) {
         mTimeStats->setPowerMode(mode);
         mRefreshRateStats->setPowerMode(mode);
-        mScheduler->setDisplayPowerState(mode == hal::PowerMode::ON);
+        mScheduler->setDisplayPowerMode(mode);
     }
 
     ALOGD("Finished setting power mode %d on display %s", mode, to_string(displayId).c_str());
@@ -4994,6 +5017,25 @@
 
         const auto flag = args.empty() ? ""s : std::string(String8(args[0]));
 
+        // Traversal of drawing state must happen on the main thread.
+        // Otherwise, SortedVector may have shared ownership during concurrent
+        // traversals, which can result in use-after-frees.
+        std::string compositionLayers;
+        mScheduler
+                ->schedule([&] {
+                    StringAppendF(&compositionLayers, "Composition layers\n");
+                    mDrawingState.traverseInZOrder([&](Layer* layer) {
+                        auto* compositionState = layer->getCompositionState();
+                        if (!compositionState || !compositionState->isVisible) return;
+
+                        android::base::StringAppendF(&compositionLayers, "* Layer %p (%s)\n", layer,
+                                                     layer->getDebugName() ? layer->getDebugName()
+                                                                           : "<unknown>");
+                        compositionState->dump(compositionLayers);
+                    });
+                })
+                .get();
+
         bool dumpLayers = true;
         {
             TimedLock lock(mStateLock, s2ns(1), __func__);
@@ -5006,7 +5048,7 @@
                 (it->second)(args, asProto, result);
                 dumpLayers = false;
             } else if (!asProto) {
-                dumpAllLocked(args, result);
+                dumpAllLocked(args, compositionLayers, result);
             }
         }
 
@@ -5305,7 +5347,8 @@
     result.append(future.get());
 }
 
-void SurfaceFlinger::dumpAllLocked(const DumpArgs& args, std::string& result) const {
+void SurfaceFlinger::dumpAllLocked(const DumpArgs& args, const std::string& compositionLayers,
+                                   std::string& result) const {
     const bool colorize = !args.empty() && args[0] == String16("--color");
     Colorizer colorizer(colorize);
 
@@ -5356,18 +5399,7 @@
     StringAppendF(&result, "Visible layers (count = %zu)\n", mNumLayers.load());
     colorizer.reset(result);
 
-    {
-        StringAppendF(&result, "Composition layers\n");
-        mDrawingState.traverseInZOrder([&](Layer* layer) {
-            auto* compositionState = layer->getCompositionState();
-            if (!compositionState || !compositionState->isVisible) return;
-
-            android::base::StringAppendF(&result, "* Layer %p (%s)\n", layer,
-                                         layer->getDebugName() ? layer->getDebugName()
-                                                               : "<unknown>");
-            compositionState->dump(result);
-        });
-    }
+    result.append(compositionLayers);
 
     colorizer.bold(result);
     StringAppendF(&result, "Displays (%zu entries)\n", mDisplays.size());
@@ -6632,8 +6664,13 @@
                                              1 /* layerCount */, usage, "screenshot");
 
     const status_t bufferStatus = buffer->initCheck();
-    LOG_ALWAYS_FATAL_IF(bufferStatus != OK, "captureScreenCommon: Buffer failed to allocate: %d",
-                        bufferStatus);
+    if (bufferStatus != OK) {
+        // Animations may end up being really janky, but don't crash here.
+        // Otherwise an irreponsible process may cause an SF crash by allocating
+        // too much.
+        ALOGE("%s: Buffer failed to allocate: %d", __func__, bufferStatus);
+        return ftl::yield<FenceResult>(base::unexpected(bufferStatus)).share();
+    }
     const std::shared_ptr<renderengine::ExternalTexture> texture = std::make_shared<
             renderengine::impl::ExternalTexture>(buffer, getRenderEngine(),
                                                  renderengine::impl::ExternalTexture::Usage::
@@ -6907,9 +6944,7 @@
         return NO_ERROR;
     }
 
-    status_t setPolicyResult = overridePolicy
-            ? display->refreshRateConfigs().setOverridePolicy(policy)
-            : display->refreshRateConfigs().setDisplayManagerPolicy(*policy);
+    const status_t setPolicyResult = display->setRefreshRatePolicy(policy, overridePolicy);
     if (setPolicyResult < 0) {
         return BAD_VALUE;
     }
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index d91aa11..02846fe 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1085,7 +1085,8 @@
     /*
      * Debugging & dumpsys
      */
-    void dumpAllLocked(const DumpArgs& args, std::string& result) const REQUIRES(mStateLock);
+    void dumpAllLocked(const DumpArgs& args, const std::string& compositionLayers,
+                       std::string& result) const REQUIRES(mStateLock);
 
     void appendSfConfigString(std::string& result) const;
     void listLayersLocked(std::string& result) const;
@@ -1436,12 +1437,12 @@
         return mScheduler->getLayerFramerate(now, id);
     }
 
+    bool mPowerHintSessionEnabled;
+
     struct {
-        bool sessionEnabled = false;
-        nsecs_t commitStart;
-        nsecs_t compositeStart;
-        nsecs_t presentEnd;
-    } mPowerHintSessionData GUARDED_BY(kMainThreadContext);
+        bool late = false;
+        bool early = false;
+    } mPowerHintSessionMode;
 
     nsecs_t mAnimationTransactionTimeout = s2ns(5);
 
diff --git a/services/surfaceflinger/tests/Android.bp b/services/surfaceflinger/tests/Android.bp
index ceddf27..507601b 100644
--- a/services/surfaceflinger/tests/Android.bp
+++ b/services/surfaceflinger/tests/Android.bp
@@ -63,7 +63,7 @@
         "android.hardware.graphics.composer@2.1",
     ],
     shared_libs: [
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.common@1.2",
         "libandroid",
         "libbase",
diff --git a/services/surfaceflinger/tests/unittests/AidlPowerHalWrapperTest.cpp b/services/surfaceflinger/tests/unittests/AidlPowerHalWrapperTest.cpp
index 9ab35d7..53de4a6 100644
--- a/services/surfaceflinger/tests/unittests/AidlPowerHalWrapperTest.cpp
+++ b/services/surfaceflinger/tests/unittests/AidlPowerHalWrapperTest.cpp
@@ -52,6 +52,8 @@
     void verifyAndClearExpectations();
     void sendActualWorkDurationGroup(std::vector<WorkDuration> durations,
                                      std::chrono::nanoseconds sleepBeforeLastSend);
+    std::chrono::nanoseconds mAllowedDeviation;
+    std::chrono::nanoseconds mStaleTimeout;
 };
 
 void AidlPowerHalWrapperTest::SetUp() {
@@ -59,6 +61,9 @@
     mMockSession = new NiceMock<MockIPowerHintSession>();
     ON_CALL(*mMockHal.get(), getHintSessionPreferredRate(_)).WillByDefault(Return(Status::ok()));
     mWrapper = std::make_unique<AidlPowerHalWrapper>(mMockHal);
+    mWrapper->setAllowedActualDeviation(std::chrono::nanoseconds{10ms}.count());
+    mAllowedDeviation = std::chrono::nanoseconds{mWrapper->mAllowedActualDeviation};
+    mStaleTimeout = AidlPowerHalWrapper::kStaleTimeout;
 }
 
 void AidlPowerHalWrapperTest::verifyAndClearExpectations() {
@@ -76,6 +81,7 @@
         mWrapper->sendActualWorkDuration(duration.durationNanos, duration.timeStampNanos);
     }
 }
+
 WorkDuration toWorkDuration(std::chrono::nanoseconds durationNanos, int64_t timeStampNanos) {
     WorkDuration duration;
     duration.durationNanos = durationNanos.count();
@@ -83,6 +89,10 @@
     return duration;
 }
 
+WorkDuration toWorkDuration(std::pair<std::chrono::nanoseconds, nsecs_t> timePair) {
+    return toWorkDuration(timePair.first, timePair.second);
+}
+
 std::string printWorkDurations(const ::std::vector<WorkDuration>& durations) {
     std::ostringstream os;
     for (auto duration : durations) {
@@ -112,7 +122,7 @@
     EXPECT_FALSE(mWrapper->startPowerHintSession());
 }
 
-TEST_F(AidlPowerHalWrapperTest, restartNewPoserHintSessionWithNewThreadIds) {
+TEST_F(AidlPowerHalWrapperTest, restartNewPowerHintSessionWithNewThreadIds) {
     ASSERT_TRUE(mWrapper->supportsPowerHintSession());
 
     std::vector<int32_t> threadIds = {1, 2};
@@ -149,12 +159,8 @@
 
     std::chrono::nanoseconds base = 100ms;
     // test cases with target work duration and whether it should update hint against baseline 100ms
-    const std::vector<std::pair<std::chrono::nanoseconds, bool>> testCases = {{0ms, false},
-                                                                              {-1ms, false},
-                                                                              {200ms, true},
-                                                                              {2ms, true},
-                                                                              {91ms, false},
-                                                                              {109ms, false}};
+    const std::vector<std::pair<std::chrono::nanoseconds, bool>> testCases =
+            {{0ms, true}, {-1ms, true}, {200ms, true}, {2ms, true}, {100ms, false}, {109ms, true}};
 
     for (const auto& test : testCases) {
         // reset to 100ms baseline
@@ -200,21 +206,21 @@
     // 100ms
     const std::vector<std::pair<std::vector<std::pair<std::chrono::nanoseconds, nsecs_t>>, bool>>
             testCases = {{{{-1ms, 100}}, false},
-                         {{{91ms, 100}}, false},
-                         {{{109ms, 100}}, false},
+                         {{{100ms - (mAllowedDeviation / 2), 100}}, false},
+                         {{{100ms + (mAllowedDeviation / 2), 100}}, false},
+                         {{{100ms + (mAllowedDeviation + 1ms), 100}}, true},
+                         {{{100ms - (mAllowedDeviation + 1ms), 100}}, true},
                          {{{100ms, 100}, {200ms, 200}}, true},
                          {{{100ms, 500}, {100ms, 600}, {3ms, 600}}, true}};
 
     for (const auto& test : testCases) {
         // reset actual duration
-        sendActualWorkDurationGroup({base}, 80ms);
+        sendActualWorkDurationGroup({base}, mStaleTimeout);
 
         auto raw = test.first;
         std::vector<WorkDuration> durations(raw.size());
         std::transform(raw.begin(), raw.end(), durations.begin(),
-                       [](std::pair<std::chrono::nanoseconds, nsecs_t> d) {
-                           return toWorkDuration(d.first, d.second);
-                       });
+                       [](auto d) { return toWorkDuration(d); });
         EXPECT_CALL(*mMockSession.get(), reportActualWorkDuration(durations))
                 .Times(test.second ? 1 : 0);
         sendActualWorkDurationGroup(durations, 0ms);
@@ -222,40 +228,6 @@
     }
 }
 
-TEST_F(AidlPowerHalWrapperTest, sendAdjustedActualWorkDuration) {
-    ASSERT_TRUE(mWrapper->supportsPowerHintSession());
-
-    std::vector<int32_t> threadIds = {1, 2};
-    mWrapper->setPowerHintSessionThreadIds(threadIds);
-    EXPECT_CALL(*mMockHal.get(), createHintSession(_, _, threadIds, _, _))
-            .WillOnce(DoAll(SetArgPointee<4>(mMockSession), Return(Status::ok())));
-    ASSERT_TRUE(mWrapper->startPowerHintSession());
-    verifyAndClearExpectations();
-
-    std::chrono::nanoseconds lastTarget = 100ms;
-    EXPECT_CALL(*mMockSession.get(), updateTargetWorkDuration(lastTarget.count())).Times(1);
-    mWrapper->setTargetWorkDuration(lastTarget.count());
-    std::chrono::nanoseconds newTarget = 105ms;
-    mWrapper->setTargetWorkDuration(newTarget.count());
-    EXPECT_CALL(*mMockSession.get(), updateTargetWorkDuration(newTarget.count())).Times(0);
-    std::chrono::nanoseconds actual = 21ms;
-    // 100 / 105 * 21ms = 20ms
-    std::chrono::nanoseconds expectedActualSent = 20ms;
-    std::vector<WorkDuration> expectedDurations = {toWorkDuration(expectedActualSent, 1)};
-
-    EXPECT_CALL(*mMockSession.get(), reportActualWorkDuration(_))
-            .WillOnce(DoAll(
-                    [expectedDurations](const ::std::vector<WorkDuration>& durationsSent) {
-                        EXPECT_EQ(expectedDurations, durationsSent)
-                                << base::StringPrintf("actual sent: %s vs expected: %s",
-                                                      printWorkDurations(durationsSent).c_str(),
-                                                      printWorkDurations(expectedDurations)
-                                                              .c_str());
-                    },
-                    Return(Status::ok())));
-    mWrapper->sendActualWorkDuration(actual.count(), 1);
-}
-
 TEST_F(AidlPowerHalWrapperTest, sendActualWorkDuration_exceedsStaleTime) {
     ASSERT_TRUE(mWrapper->supportsPowerHintSession());
 
@@ -269,22 +241,23 @@
     auto base = toWorkDuration(100ms, 0);
     // test cases with actual work durations and whether it should update hint against baseline
     // 100ms
-    const std::vector<std::pair<std::vector<std::pair<std::chrono::nanoseconds, nsecs_t>>, bool>>
-            testCases = {{{{91ms, 100}}, true}, {{{109ms, 100}}, true}};
+    const std::vector<std::tuple<std::vector<std::pair<std::chrono::nanoseconds, nsecs_t>>,
+                                 std::chrono::nanoseconds, bool>>
+            testCases = {{{{100ms, 100}}, mStaleTimeout, true},
+                         {{{100ms + (mAllowedDeviation / 2), 100}}, mStaleTimeout, true},
+                         {{{100ms, 100}}, mStaleTimeout / 2, false}};
 
     for (const auto& test : testCases) {
         // reset actual duration
-        sendActualWorkDurationGroup({base}, 80ms);
+        sendActualWorkDurationGroup({base}, mStaleTimeout);
 
-        auto raw = test.first;
+        auto raw = std::get<0>(test);
         std::vector<WorkDuration> durations(raw.size());
         std::transform(raw.begin(), raw.end(), durations.begin(),
-                       [](std::pair<std::chrono::nanoseconds, nsecs_t> d) {
-                           return toWorkDuration(d.first, d.second);
-                       });
+                       [](auto d) { return toWorkDuration(d); });
         EXPECT_CALL(*mMockSession.get(), reportActualWorkDuration(durations))
-                .Times(test.second ? 1 : 0);
-        sendActualWorkDurationGroup(durations, 80ms);
+                .Times(std::get<2>(test) ? 1 : 0);
+        sendActualWorkDurationGroup(durations, std::get<1>(test));
         verifyAndClearExpectations();
     }
 }
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index 7823363..339d746 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -24,6 +24,7 @@
 filegroup {
     name: "libsurfaceflinger_mock_sources",
     srcs: [
+        "mock/DisplayHardware/MockAidlPowerHalWrapper.cpp",
         "mock/DisplayHardware/MockComposer.cpp",
         "mock/DisplayHardware/MockHWC2.cpp",
         "mock/DisplayHardware/MockIPower.cpp",
@@ -95,6 +96,7 @@
         "LayerTest.cpp",
         "LayerTestUtils.cpp",
         "MessageQueueTest.cpp",
+        "PowerAdvisorTest.cpp",
         "SurfaceFlinger_CreateDisplayTest.cpp",
         "SurfaceFlinger_DestroyDisplayTest.cpp",
         "SurfaceFlinger_DisplayModeSwitching.cpp",
@@ -136,7 +138,7 @@
     static_libs: [
         "android.hardware.common-V2-ndk",
         "android.hardware.common.fmq-V1-ndk",
-        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.graphics.common-V4-ndk",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
diff --git a/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp b/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp
index ec27eda..67ace1a 100644
--- a/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DispSyncSourceTest.cpp
@@ -292,9 +292,10 @@
 
 TEST_F(DispSyncSourceTest, getLatestVsyncData) {
     const nsecs_t now = systemTime();
-    const nsecs_t vsyncInternalDuration = mWorkDuration.count() + mReadyDuration.count();
+    const nsecs_t expectedPresentationTime =
+            now + mWorkDuration.count() + mReadyDuration.count() + 1;
     EXPECT_CALL(*mVSyncTracker, nextAnticipatedVSyncTimeFrom(_))
-            .WillOnce(Return(now + vsyncInternalDuration + 1));
+            .WillOnce(Return(expectedPresentationTime));
     {
         InSequence seq;
         EXPECT_CALL(*mVSyncDispatch, registerCallback(_, mName)).Times(1);
@@ -306,10 +307,8 @@
     EXPECT_TRUE(mDispSyncSource);
 
     const auto vsyncData = mDispSyncSource->getLatestVSyncData();
-    ASSERT_GT(vsyncData.deadlineTimestamp, now);
-    ASSERT_GT(vsyncData.expectedPresentationTime, vsyncData.deadlineTimestamp);
-    EXPECT_EQ(vsyncData.deadlineTimestamp,
-              vsyncData.expectedPresentationTime - vsyncInternalDuration);
+    ASSERT_EQ(vsyncData.expectedPresentationTime, expectedPresentationTime);
+    EXPECT_EQ(vsyncData.deadlineTimestamp, expectedPresentationTime - mReadyDuration.count());
 }
 
 } // namespace
diff --git a/services/surfaceflinger/tests/unittests/PowerAdvisorTest.cpp b/services/surfaceflinger/tests/unittests/PowerAdvisorTest.cpp
new file mode 100644
index 0000000..8711a42
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/PowerAdvisorTest.cpp
@@ -0,0 +1,203 @@
+/*
+ * Copyright 2022 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 "PowerAdvisorTest"
+
+#include <DisplayHardware/PowerAdvisor.h>
+#include <compositionengine/Display.h>
+#include <ftl/fake_guard.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <ui/DisplayId.h>
+#include <chrono>
+#include "TestableSurfaceFlinger.h"
+#include "mock/DisplayHardware/MockAidlPowerHalWrapper.h"
+
+using namespace android;
+using namespace android::Hwc2::mock;
+using namespace android::hardware::power;
+using namespace std::chrono_literals;
+using namespace testing;
+
+namespace android::Hwc2::impl {
+
+class PowerAdvisorTest : public testing::Test {
+public:
+    void SetUp() override;
+    void startPowerHintSession();
+    void fakeBasicFrameTiming(nsecs_t startTime, nsecs_t vsyncPeriod);
+    void setExpectedTiming(nsecs_t startTime, nsecs_t vsyncPeriod);
+    nsecs_t getFenceWaitDelayDuration(bool skipValidate);
+
+protected:
+    TestableSurfaceFlinger mFlinger;
+    std::unique_ptr<PowerAdvisor> mPowerAdvisor;
+    NiceMock<MockAidlPowerHalWrapper>* mMockAidlWrapper;
+    nsecs_t kErrorMargin = std::chrono::nanoseconds(1ms).count();
+};
+
+void PowerAdvisorTest::SetUp() FTL_FAKE_GUARD(mPowerAdvisor->mPowerHalMutex) {
+    std::unique_ptr<MockAidlPowerHalWrapper> mockAidlWrapper =
+            std::make_unique<NiceMock<MockAidlPowerHalWrapper>>();
+    mPowerAdvisor = std::make_unique<PowerAdvisor>(*mFlinger.flinger());
+    ON_CALL(*mockAidlWrapper.get(), supportsPowerHintSession()).WillByDefault(Return(true));
+    ON_CALL(*mockAidlWrapper.get(), startPowerHintSession()).WillByDefault(Return(true));
+    mPowerAdvisor->mHalWrapper = std::move(mockAidlWrapper);
+    mMockAidlWrapper =
+            reinterpret_cast<NiceMock<MockAidlPowerHalWrapper>*>(mPowerAdvisor->mHalWrapper.get());
+}
+
+void PowerAdvisorTest::startPowerHintSession() {
+    const std::vector<int32_t> threadIds = {1, 2, 3};
+    mPowerAdvisor->enablePowerHint(true);
+    mPowerAdvisor->startPowerHintSession(threadIds);
+}
+
+void PowerAdvisorTest::setExpectedTiming(nsecs_t totalFrameTarget, nsecs_t expectedPresentTime) {
+    mPowerAdvisor->setTotalFrameTargetWorkDuration(totalFrameTarget);
+    mPowerAdvisor->setExpectedPresentTime(expectedPresentTime);
+}
+
+void PowerAdvisorTest::fakeBasicFrameTiming(nsecs_t startTime, nsecs_t vsyncPeriod) {
+    mPowerAdvisor->setCommitStart(startTime);
+    mPowerAdvisor->setFrameDelay(0);
+    mPowerAdvisor->setTargetWorkDuration(vsyncPeriod);
+}
+
+nsecs_t PowerAdvisorTest::getFenceWaitDelayDuration(bool skipValidate) {
+    return (skipValidate ? PowerAdvisor::kFenceWaitStartDelaySkippedValidate
+                         : PowerAdvisor::kFenceWaitStartDelayValidated)
+            .count();
+}
+
+namespace {
+
+TEST_F(PowerAdvisorTest, hintSessionUseHwcDisplay) {
+    mPowerAdvisor->onBootFinished();
+    startPowerHintSession();
+
+    std::vector<DisplayId> displayIds{PhysicalDisplayId::fromPort(42u)};
+
+    // 60hz
+    const nsecs_t vsyncPeriod = std::chrono::nanoseconds(1s).count() / 60;
+    const nsecs_t presentDuration = std::chrono::nanoseconds(5ms).count();
+    const nsecs_t postCompDuration = std::chrono::nanoseconds(1ms).count();
+
+    nsecs_t startTime = 100;
+
+    // advisor only starts on frame 2 so do an initial no-op frame
+    fakeBasicFrameTiming(startTime, vsyncPeriod);
+    setExpectedTiming(vsyncPeriod, startTime + vsyncPeriod);
+    mPowerAdvisor->setDisplays(displayIds);
+    mPowerAdvisor->setSfPresentTiming(startTime, startTime + presentDuration);
+    mPowerAdvisor->setCompositeEnd(startTime + presentDuration + postCompDuration);
+
+    // increment the frame
+    startTime += vsyncPeriod;
+
+    const nsecs_t expectedDuration = kErrorMargin + presentDuration + postCompDuration;
+    EXPECT_CALL(*mMockAidlWrapper, sendActualWorkDuration(Eq(expectedDuration), _)).Times(1);
+
+    fakeBasicFrameTiming(startTime, vsyncPeriod);
+    setExpectedTiming(vsyncPeriod, startTime + vsyncPeriod);
+    mPowerAdvisor->setDisplays(displayIds);
+    mPowerAdvisor->setHwcValidateTiming(displayIds[0], startTime + 1000000, startTime + 1500000);
+    mPowerAdvisor->setHwcPresentTiming(displayIds[0], startTime + 2000000, startTime + 2500000);
+    mPowerAdvisor->setSfPresentTiming(startTime, startTime + presentDuration);
+    mPowerAdvisor->sendActualWorkDuration();
+}
+
+TEST_F(PowerAdvisorTest, hintSessionSubtractsHwcFenceTime) {
+    mPowerAdvisor->onBootFinished();
+    startPowerHintSession();
+
+    std::vector<DisplayId> displayIds{PhysicalDisplayId::fromPort(42u)};
+
+    // 60hz
+    const nsecs_t vsyncPeriod = std::chrono::nanoseconds(1s).count() / 60;
+    const nsecs_t presentDuration = std::chrono::nanoseconds(5ms).count();
+    const nsecs_t postCompDuration = std::chrono::nanoseconds(1ms).count();
+    const nsecs_t hwcBlockedDuration = std::chrono::nanoseconds(500us).count();
+
+    nsecs_t startTime = 100;
+
+    // advisor only starts on frame 2 so do an initial no-op frame
+    fakeBasicFrameTiming(startTime, vsyncPeriod);
+    setExpectedTiming(vsyncPeriod, startTime + vsyncPeriod);
+    mPowerAdvisor->setDisplays(displayIds);
+    mPowerAdvisor->setSfPresentTiming(startTime, startTime + presentDuration);
+    mPowerAdvisor->setCompositeEnd(startTime + presentDuration + postCompDuration);
+
+    // increment the frame
+    startTime += vsyncPeriod;
+
+    const nsecs_t expectedDuration = kErrorMargin + presentDuration +
+            getFenceWaitDelayDuration(false) - hwcBlockedDuration + postCompDuration;
+    EXPECT_CALL(*mMockAidlWrapper, sendActualWorkDuration(Eq(expectedDuration), _)).Times(1);
+
+    fakeBasicFrameTiming(startTime, vsyncPeriod);
+    setExpectedTiming(vsyncPeriod, startTime + vsyncPeriod);
+    mPowerAdvisor->setDisplays(displayIds);
+    mPowerAdvisor->setHwcValidateTiming(displayIds[0], startTime + 1000000, startTime + 1500000);
+    mPowerAdvisor->setHwcPresentTiming(displayIds[0], startTime + 2000000, startTime + 3000000);
+    // now report the fence as having fired during the display HWC time
+    mPowerAdvisor->setSfPresentTiming(startTime + 2000000 + hwcBlockedDuration,
+                                      startTime + presentDuration);
+    mPowerAdvisor->sendActualWorkDuration();
+}
+
+TEST_F(PowerAdvisorTest, hintSessionUsingSecondaryVirtualDisplays) {
+    mPowerAdvisor->onBootFinished();
+    startPowerHintSession();
+
+    std::vector<DisplayId> displayIds{PhysicalDisplayId::fromPort(42u), GpuVirtualDisplayId(0),
+                                      GpuVirtualDisplayId(1)};
+
+    // 60hz
+    const nsecs_t vsyncPeriod = std::chrono::nanoseconds(1s).count() / 60;
+    // make present duration much later than the hwc display by itself will account for
+    const nsecs_t presentDuration = std::chrono::nanoseconds(10ms).count();
+    const nsecs_t postCompDuration = std::chrono::nanoseconds(1ms).count();
+
+    nsecs_t startTime = 100;
+
+    // advisor only starts on frame 2 so do an initial no-op frame
+    fakeBasicFrameTiming(startTime, vsyncPeriod);
+    setExpectedTiming(vsyncPeriod, startTime + vsyncPeriod);
+    mPowerAdvisor->setDisplays(displayIds);
+    mPowerAdvisor->setSfPresentTiming(startTime, startTime + presentDuration);
+    mPowerAdvisor->setCompositeEnd(startTime + presentDuration + postCompDuration);
+
+    // increment the frame
+    startTime += vsyncPeriod;
+
+    const nsecs_t expectedDuration = kErrorMargin + presentDuration + postCompDuration;
+    EXPECT_CALL(*mMockAidlWrapper, sendActualWorkDuration(Eq(expectedDuration), _)).Times(1);
+
+    fakeBasicFrameTiming(startTime, vsyncPeriod);
+    setExpectedTiming(vsyncPeriod, startTime + vsyncPeriod);
+    mPowerAdvisor->setDisplays(displayIds);
+
+    // don't report timing for the gpu displays since they don't use hwc
+    mPowerAdvisor->setHwcValidateTiming(displayIds[0], startTime + 1000000, startTime + 1500000);
+    mPowerAdvisor->setHwcPresentTiming(displayIds[0], startTime + 2000000, startTime + 2500000);
+    mPowerAdvisor->setSfPresentTiming(startTime, startTime + presentDuration);
+    mPowerAdvisor->sendActualWorkDuration();
+}
+
+} // namespace
+} // namespace android::Hwc2::impl
diff --git a/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp b/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
index fcde532..188fd58 100644
--- a/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
+++ b/services/surfaceflinger/tests/unittests/RefreshRateConfigsTest.cpp
@@ -564,9 +564,10 @@
     TestableRefreshRateConfigs configs(kModes_30_60_72_90_120, kModeId60,
                                        {.frameRateMultipleThreshold = 120});
 
-    std::vector<LayerRequirement> layers = {{.weight = 1.f}, {.weight = 1.f}};
+    std::vector<LayerRequirement> layers = {{.weight = 1.f}, {.weight = 1.f}, {.weight = 1.f}};
     auto& lr1 = layers[0];
     auto& lr2 = layers[1];
+    auto& lr3 = layers[2];
 
     lr1.desiredRefreshRate = 24_Hz;
     lr1.vote = LayerVoteType::ExplicitDefault;
@@ -639,6 +640,48 @@
     lr2.vote = LayerVoteType::ExplicitExactOrMultiple;
     lr2.name = "90Hz ExplicitExactOrMultiple";
     EXPECT_EQ(kMode90, configs.getBestRefreshRate(layers));
+
+    lr1.desiredRefreshRate = 24_Hz;
+    lr1.vote = LayerVoteType::ExplicitExactOrMultiple;
+    lr1.name = "24Hz ExplicitExactOrMultiple";
+    lr2.vote = LayerVoteType::Max;
+    lr2.name = "Max";
+    EXPECT_EQ(kMode120, configs.getBestRefreshRate(layers));
+
+    lr1.desiredRefreshRate = 24_Hz;
+    lr1.vote = LayerVoteType::ExplicitExactOrMultiple;
+    lr1.name = "24Hz ExplicitExactOrMultiple";
+    lr2.desiredRefreshRate = 120_Hz;
+    lr2.vote = LayerVoteType::ExplicitDefault;
+    lr2.name = "120Hz ExplicitDefault";
+    EXPECT_EQ(kMode120, configs.getBestRefreshRate(layers));
+
+    lr1.desiredRefreshRate = 24_Hz;
+    lr1.vote = LayerVoteType::ExplicitExactOrMultiple;
+    lr1.name = "24Hz ExplicitExactOrMultiple";
+    lr2.desiredRefreshRate = 120_Hz;
+    lr2.vote = LayerVoteType::ExplicitExact;
+    lr2.name = "120Hz ExplicitExact";
+    EXPECT_EQ(kMode120, configs.getBestRefreshRate(layers));
+
+    lr1.desiredRefreshRate = 10_Hz;
+    lr1.vote = LayerVoteType::ExplicitExactOrMultiple;
+    lr1.name = "30Hz ExplicitExactOrMultiple";
+    lr2.desiredRefreshRate = 120_Hz;
+    lr2.vote = LayerVoteType::Heuristic;
+    lr2.name = "120Hz ExplicitExact";
+    EXPECT_EQ(kMode120, configs.getBestRefreshRate(layers));
+
+    lr1.desiredRefreshRate = 30_Hz;
+    lr1.vote = LayerVoteType::ExplicitExactOrMultiple;
+    lr1.name = "30Hz ExplicitExactOrMultiple";
+    lr2.desiredRefreshRate = 30_Hz;
+    lr2.vote = LayerVoteType::ExplicitExactOrMultiple;
+    lr2.name = "30Hz ExplicitExactOrMultiple";
+    lr3.vote = LayerVoteType::Heuristic;
+    lr3.desiredRefreshRate = 120_Hz;
+    lr3.name = "120Hz Heuristic";
+    EXPECT_EQ(kMode120, configs.getBestRefreshRate(layers));
 }
 
 TEST_F(RefreshRateConfigsTest, getBestRefreshRate_30_60) {
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index aab2795..93c809e 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -159,8 +159,8 @@
     mScheduler->recordLayerHistory(layer.get(), 0, LayerHistory::LayerUpdateType::Buffer);
     ASSERT_EQ(0u, mScheduler->getNumActiveLayers());
 
-    constexpr bool kPowerStateNormal = true;
-    mScheduler->setDisplayPowerState(kPowerStateNormal);
+    constexpr hal::PowerMode kPowerModeOn = hal::PowerMode::ON;
+    mScheduler->setDisplayPowerMode(kPowerModeOn);
 
     constexpr uint32_t kDisplayArea = 999'999;
     mScheduler->onActiveDisplayAreaChanged(kDisplayArea);
@@ -226,8 +226,8 @@
 
     mScheduler->recordLayerHistory(layer.get(), 0, LayerHistory::LayerUpdateType::Buffer);
 
-    constexpr bool kPowerStateNormal = true;
-    mScheduler->setDisplayPowerState(kPowerStateNormal);
+    constexpr hal::PowerMode kPowerModeOn = hal::PowerMode::ON;
+    mScheduler->setDisplayPowerMode(kPowerModeOn);
 
     constexpr uint32_t kDisplayArea = 999'999;
     mScheduler->onActiveDisplayAreaChanged(kDisplayArea);
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_PowerHintTest.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_PowerHintTest.cpp
index 8de9e4b..2c9888d 100644
--- a/services/surfaceflinger/tests/unittests/SurfaceFlinger_PowerHintTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_PowerHintTest.cpp
@@ -74,6 +74,7 @@
     mFlinger.setupRenderEngine(std::unique_ptr<renderengine::RenderEngine>(mRenderEngine));
     mFlinger.setupTimeStats(std::shared_ptr<TimeStats>(mTimeStats));
     mFlinger.setupComposer(std::unique_ptr<Hwc2::Composer>(mComposer));
+    mFlinger.setPowerHintSessionMode(true, true);
     mFlinger.setupPowerAdvisor(std::unique_ptr<Hwc2::PowerAdvisor>(mPowerAdvisor));
     static constexpr bool kIsPrimary = true;
     FakeHwcDisplayInjector(DEFAULT_DISPLAY_ID, hal::DisplayType::PHYSICAL, kIsPrimary)
@@ -96,6 +97,7 @@
                     .setNativeWindow(mNativeWindow)
                     .setPowerMode(hal::PowerMode::ON)
                     .inject();
+    mFlinger.mutableActiveDisplayToken() = mDisplay->getDisplayToken();
 }
 
 void SurfaceFlingerPowerHintTest::setupScheduler() {
@@ -142,10 +144,30 @@
                 std::this_thread::sleep_for(mockHwcRunTime);
                 return hardware::graphics::composer::V2_1::Error::NONE;
             });
-    EXPECT_CALL(*mPowerAdvisor,
-                sendActualWorkDuration(Gt(mockHwcRunTime.count()),
-                                       Gt(now + mockHwcRunTime.count())))
+    EXPECT_CALL(*mPowerAdvisor, sendActualWorkDuration()).Times(1);
+    static constexpr bool kVsyncId = 123; // arbitrary
+    mFlinger.commitAndComposite(now, kVsyncId, now + mockVsyncPeriod.count());
+}
+
+TEST_F(SurfaceFlingerPowerHintTest, inactiveOnDisplayDoze) {
+    ON_CALL(*mPowerAdvisor, usePowerHintSession()).WillByDefault(Return(true));
+
+    mDisplay->setPowerMode(hal::PowerMode::DOZE);
+
+    const std::chrono::nanoseconds mockVsyncPeriod = 15ms;
+    EXPECT_CALL(*mPowerAdvisor, setTargetWorkDuration(_)).Times(0);
+
+    const nsecs_t now = systemTime();
+    const std::chrono::nanoseconds mockHwcRunTime = 20ms;
+    EXPECT_CALL(*mDisplaySurface,
+                prepareFrame(compositionengine::DisplaySurface::CompositionType::Hwc))
             .Times(1);
+    EXPECT_CALL(*mComposer, presentOrValidateDisplay(HWC_DISPLAY, _, _, _, _, _))
+            .WillOnce([mockHwcRunTime] {
+                std::this_thread::sleep_for(mockHwcRunTime);
+                return hardware::graphics::composer::V2_1::Error::NONE;
+            });
+    EXPECT_CALL(*mPowerAdvisor, sendActualWorkDuration()).Times(0);
     static constexpr bool kVsyncId = 123; // arbitrary
     mFlinger.commitAndComposite(now, kVsyncId, now + mockVsyncPeriod.count());
 }
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index f1a69fb..283f9ca 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -330,6 +330,10 @@
         layer->mDrawingParent = drawingParent;
     }
 
+    void setPowerHintSessionMode(bool early, bool late) {
+        mFlinger->mPowerHintSessionMode = {.late = late, .early = early};
+    }
+
     /* ------------------------------------------------------------------------
      * Forwarding for functions being tested
      */
@@ -741,6 +745,7 @@
                 mHwcDisplayId(hwcDisplayId) {
             mCreationArgs.connectionType = connectionType;
             mCreationArgs.isPrimary = isPrimary;
+            mCreationArgs.initialPowerMode = hal::PowerMode::ON;
         }
 
         sp<IBinder> token() const { return mDisplayToken; }
diff --git a/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp b/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
index 4eb9055..30a3f9a 100644
--- a/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VSyncReactorTest.cpp
@@ -349,6 +349,23 @@
     }
 }
 
+TEST_F(VSyncReactorTest, addHwVsyncTimestampDozePreempt) {
+    bool periodFlushed = false;
+    nsecs_t const newPeriod = 4000;
+
+    mReactor.startPeriodTransition(newPeriod);
+
+    auto time = 0;
+    // If the power mode is not DOZE or DOZE_SUSPEND, it is still collecting timestamps.
+    EXPECT_TRUE(mReactor.addHwVsyncTimestamp(time, std::nullopt, &periodFlushed));
+    EXPECT_FALSE(periodFlushed);
+
+    // Set power mode to DOZE to trigger period flushing.
+    mReactor.setDisplayPowerMode(hal::PowerMode::DOZE);
+    EXPECT_FALSE(mReactor.addHwVsyncTimestamp(time, std::nullopt, &periodFlushed));
+    EXPECT_TRUE(periodFlushed);
+}
+
 TEST_F(VSyncReactorTest, addPresentFenceWhileAwaitingPeriodConfirmationRequestsHwVsync) {
     auto time = 0;
     bool periodFlushed = false;
diff --git a/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockAidlPowerHalWrapper.cpp
similarity index 65%
copy from libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl
copy to services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockAidlPowerHalWrapper.cpp
index fc2542b..5049b1d 100644
--- a/libs/binder/tests/parcel_fuzzer/GenericDataParcelable.aidl
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockAidlPowerHalWrapper.cpp
@@ -14,11 +14,13 @@
  * limitations under the License.
  */
 
-parcelable GenericDataParcelable {
-    int data;
-    float majorVersion;
-    float minorVersion;
-    IBinder binder;
-    ParcelFileDescriptor fileDescriptor;
-    int[] array;
-}
\ No newline at end of file
+#include "MockAidlPowerHalWrapper.h"
+#include "MockIPower.h"
+
+namespace android::Hwc2::mock {
+
+MockAidlPowerHalWrapper::MockAidlPowerHalWrapper()
+      : AidlPowerHalWrapper(sp<testing::NiceMock<MockIPower>>::make()){};
+MockAidlPowerHalWrapper::~MockAidlPowerHalWrapper() = default;
+
+} // namespace android::Hwc2::mock
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockAidlPowerHalWrapper.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockAidlPowerHalWrapper.h
new file mode 100644
index 0000000..657ced3
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockAidlPowerHalWrapper.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include "DisplayHardware/PowerAdvisor.h"
+
+namespace android {
+namespace hardware {
+namespace power {
+class IPower;
+}
+} // namespace hardware
+} // namespace android
+
+namespace android::Hwc2::mock {
+
+class MockAidlPowerHalWrapper : public Hwc2::impl::AidlPowerHalWrapper {
+public:
+    MockAidlPowerHalWrapper();
+    ~MockAidlPowerHalWrapper() override;
+    MOCK_METHOD(bool, setExpensiveRendering, (bool enabled), (override));
+    MOCK_METHOD(bool, notifyDisplayUpdateImminent, (), (override));
+    MOCK_METHOD(bool, supportsPowerHintSession, (), (override));
+    MOCK_METHOD(bool, isPowerHintSessionRunning, (), (override));
+    MOCK_METHOD(void, restartPowerHintSession, (), (override));
+    MOCK_METHOD(void, setPowerHintSessionThreadIds, (const std::vector<int32_t>& threadIds),
+                (override));
+    MOCK_METHOD(bool, startPowerHintSession, (), (override));
+    MOCK_METHOD(void, setTargetWorkDuration, (nsecs_t targetDuration), (override));
+    MOCK_METHOD(void, sendActualWorkDuration, (nsecs_t actualDuration, nsecs_t timestamp),
+                (override));
+    MOCK_METHOD(bool, shouldReconnectHAL, (), (override));
+};
+
+} // namespace android::Hwc2::mock
\ No newline at end of file
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h
index c598cbc..aede250 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerAdvisor.h
@@ -36,11 +36,33 @@
     MOCK_METHOD(bool, usePowerHintSession, (), (override));
     MOCK_METHOD(bool, supportsPowerHintSession, (), (override));
     MOCK_METHOD(bool, isPowerHintSessionRunning, (), (override));
-    MOCK_METHOD(void, setTargetWorkDuration, (int64_t targetDurationNanos), (override));
-    MOCK_METHOD(void, sendActualWorkDuration, (int64_t actualDurationNanos, nsecs_t timestamp),
-                (override));
+    MOCK_METHOD(void, setTargetWorkDuration, (int64_t targetDuration), (override));
+    MOCK_METHOD(void, sendActualWorkDuration, (), (override));
+    MOCK_METHOD(void, sendPredictedWorkDuration, (), (override));
     MOCK_METHOD(void, enablePowerHint, (bool enabled), (override));
     MOCK_METHOD(bool, startPowerHintSession, (const std::vector<int32_t>& threadIds), (override));
+    MOCK_METHOD(void, setGpuFenceTime,
+                (DisplayId displayId, std::unique_ptr<FenceTime>&& fenceTime), (override));
+    MOCK_METHOD(void, setHwcValidateTiming,
+                (DisplayId displayId, nsecs_t valiateStartTime, nsecs_t validateEndTime),
+                (override));
+    MOCK_METHOD(void, setHwcPresentTiming,
+                (DisplayId displayId, nsecs_t presentStartTime, nsecs_t presentEndTime),
+                (override));
+    MOCK_METHOD(void, setSkippedValidate, (DisplayId displayId, bool skipped), (override));
+    MOCK_METHOD(void, setRequiresClientComposition,
+                (DisplayId displayId, bool requiresClientComposition), (override));
+    MOCK_METHOD(void, setExpectedPresentTime, (nsecs_t expectedPresentTime), (override));
+    MOCK_METHOD(void, setSfPresentTiming, (nsecs_t presentFenceTime, nsecs_t presentEndTime),
+                (override));
+    MOCK_METHOD(void, setHwcPresentDelayedTime,
+                (DisplayId displayId,
+                 std::chrono::steady_clock::time_point earliestFrameStartTime));
+    MOCK_METHOD(void, setFrameDelay, (nsecs_t frameDelayDuration), (override));
+    MOCK_METHOD(void, setCommitStart, (nsecs_t commitStartTime), (override));
+    MOCK_METHOD(void, setCompositeEnd, (nsecs_t compositeEndtime), (override));
+    MOCK_METHOD(void, setDisplays, (std::vector<DisplayId> & displayIds), (override));
+    MOCK_METHOD(void, setTotalFrameTargetWorkDuration, (int64_t targetDuration), (override));
 };
 
 } // namespace android::Hwc2::mock
diff --git a/services/surfaceflinger/tests/unittests/mock/MockVsyncController.h b/services/surfaceflinger/tests/unittests/mock/MockVsyncController.h
index 314f681..4ef91da 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockVsyncController.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockVsyncController.h
@@ -31,6 +31,7 @@
     MOCK_METHOD3(addHwVsyncTimestamp, bool(nsecs_t, std::optional<nsecs_t>, bool*));
     MOCK_METHOD1(startPeriodTransition, void(nsecs_t));
     MOCK_METHOD1(setIgnorePresentFences, void(bool));
+    MOCK_METHOD(void, setDisplayPowerMode, (hal::PowerMode), (override));
 
     MOCK_CONST_METHOD1(dump, void(std::string&));
 };
diff --git a/services/vr/hardware_composer/Android.bp b/services/vr/hardware_composer/Android.bp
deleted file mode 100644
index 80e9a3c..0000000
--- a/services/vr/hardware_composer/Android.bp
+++ /dev/null
@@ -1,134 +0,0 @@
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_native_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_native_license"],
-}
-
-cc_library_shared {
-    name: "libvr_hwc-hal",
-
-    system_ext_specific: true,
-
-    srcs: [
-        "impl/vr_hwc.cpp",
-        "impl/vr_composer_client.cpp",
-    ],
-
-    static_libs: [
-        "libbroadcastring",
-        "libdisplay",
-    ],
-
-    shared_libs: [
-        "android.frameworks.vr.composer@2.0",
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.2",
-        "android.hardware.graphics.composer@2.3",
-        "android.hardware.graphics.composer@2.1-resources",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
-        "android.hardware.graphics.mapper@4.0",
-        "libbase",
-        "libbufferhubqueue",
-        "libbinder",
-        "libcutils",
-        "libfmq",
-        "libhardware",
-        "libhidlbase",
-        "liblog",
-        "libsync",
-        "libui",
-        "libutils",
-        "libpdx_default_transport",
-    ],
-
-    header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
-        "android.hardware.graphics.composer@2.3-hal",
-    ],
-
-    export_header_lib_headers: [
-        "android.hardware.graphics.composer@2.3-hal",
-    ],
-
-    export_static_lib_headers: [
-        "libdisplay",
-    ],
-
-    export_shared_lib_headers: [
-        "android.frameworks.vr.composer@2.0",
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.2",
-        "android.hardware.graphics.composer@2.3",
-    ],
-
-    export_include_dirs: ["."],
-
-    cflags: [
-        "-DLOG_TAG=\"vr_hwc\"",
-        "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
-        "-Wall",
-        "-Werror",
-        "-Wno-error=unused-private-field",
-        // Warnings in vr_hwc.cpp to be fixed after sync of goog/master.
-        "-Wno-sign-compare",
-        "-Wno-unused-parameter",
-    ],
-
-}
-
-cc_library_static {
-    name: "libvr_hwc-impl",
-    srcs: [
-        "vr_composer.cpp",
-    ],
-    static_libs: [
-        "libvr_hwc-binder",
-    ],
-    shared_libs: [
-        "libbase",
-        "libbinder",
-        "liblog",
-        "libui",
-        "libutils",
-        "libvr_hwc-hal",
-    ],
-    export_shared_lib_headers: [
-        "libvr_hwc-hal",
-    ],
-    cflags: [
-        "-DLOG_TAG=\"vr_hwc\"",
-        "-Wall",
-        "-Werror",
-    ],
-}
-
-cc_test {
-    name: "vr_hwc_test",
-    gtest: true,
-    srcs: ["tests/vr_composer_test.cpp"],
-    static_libs: [
-        "libgtest",
-        "libvr_hwc-impl",
-        // NOTE: This needs to be included after the *-impl lib otherwise the
-        // symbols in the *-binder library get optimized out.
-        "libvr_hwc-binder",
-    ],
-    cflags: [
-        "-Wall",
-        "-Werror",
-        // warnings in vr_composer_test.cpp to be fixed after merge of goog/master
-        "-Wno-sign-compare",
-        "-Wno-unused-parameter",
-    ],
-    shared_libs: [
-        "libbase",
-        "libbinder",
-        "liblog",
-        "libui",
-        "libutils",
-    ],
-}
diff --git a/services/vr/hardware_composer/aidl/Android.bp b/services/vr/hardware_composer/aidl/Android.bp
deleted file mode 100644
index fa71ed7..0000000
--- a/services/vr/hardware_composer/aidl/Android.bp
+++ /dev/null
@@ -1,36 +0,0 @@
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "frameworks_native_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["frameworks_native_license"],
-}
-
-cc_library_static {
-    name: "libvr_hwc-binder",
-    srcs: [
-        "android/dvr/IVrComposer.aidl",
-        "android/dvr/IVrComposerCallback.aidl",
-        "android/dvr/parcelable_composer_frame.cpp",
-        "android/dvr/parcelable_composer_layer.cpp",
-        "android/dvr/parcelable_unique_fd.cpp",
-    ],
-    aidl: {
-        local_include_dirs: ["."],
-        export_aidl_headers: true,
-    },
-    export_include_dirs: ["."],
-
-    cflags: [
-        "-Wall",
-        "-Werror",
-    ],
-
-    shared_libs: [
-        "libbinder",
-        "libui",
-        "libutils",
-        "libvr_hwc-hal",
-    ],
-}
diff --git a/services/vr/hardware_composer/aidl/android/dvr/IVrComposer.aidl b/services/vr/hardware_composer/aidl/android/dvr/IVrComposer.aidl
deleted file mode 100644
index be1ec5b..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/IVrComposer.aidl
+++ /dev/null
@@ -1,25 +0,0 @@
-package android.dvr;
-
-import android.dvr.IVrComposerCallback;
-
-/**
- * Service interface exposed by VR HWC exposed to system apps which allows one
- * system app to connect to get SurfaceFlinger's outputs (all displays). This
- * is active when SurfaceFlinger is in VR mode, where all 2D output is
- * redirected to VR HWC.
- *
- * @hide */
-interface IVrComposer
-{
-  const String SERVICE_NAME = "vr_hwc";
-
-  /**
-   * Registers a callback used to receive frame notifications.
-   */
-  void registerObserver(in IVrComposerCallback callback);
-
-  /**
-   * Clears a previously registered frame notification callback.
-   */
-  void clearObserver();
-}
diff --git a/services/vr/hardware_composer/aidl/android/dvr/IVrComposerCallback.aidl b/services/vr/hardware_composer/aidl/android/dvr/IVrComposerCallback.aidl
deleted file mode 100644
index aa70de1..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/IVrComposerCallback.aidl
+++ /dev/null
@@ -1,22 +0,0 @@
-package android.dvr;
-
-import android.dvr.ParcelableComposerFrame;
-import android.dvr.ParcelableUniqueFd;
-
-/**
- * A system app will implement and register this callback with VRComposer
- * to receive the layers SurfaceFlinger presented when in VR mode.
- *
- * @hide */
-interface IVrComposerCallback {
-  /**
-   * Called by the VR HWC service when a new frame is ready to be presented.
-   *
-   * @param frame The new frame VR HWC wants to present.
-   * @return A fence FD used to signal when the previous frame is no longer
-   * used by the client. This may be an invalid fence (-1) if the client is not
-   * using the previous frame, in which case the previous frame may be re-used
-   * at any point in time.
-   */
-  ParcelableUniqueFd onNewFrame(in ParcelableComposerFrame frame);
-}
diff --git a/services/vr/hardware_composer/aidl/android/dvr/ParcelableComposerFrame.aidl b/services/vr/hardware_composer/aidl/android/dvr/ParcelableComposerFrame.aidl
deleted file mode 100644
index 84abc19..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/ParcelableComposerFrame.aidl
+++ /dev/null
@@ -1,3 +0,0 @@
-package android.dvr;
-
-parcelable ParcelableComposerFrame cpp_header "android/dvr/parcelable_composer_frame.h";
diff --git a/services/vr/hardware_composer/aidl/android/dvr/ParcelableComposerLayer.aidl b/services/vr/hardware_composer/aidl/android/dvr/ParcelableComposerLayer.aidl
deleted file mode 100644
index a200345..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/ParcelableComposerLayer.aidl
+++ /dev/null
@@ -1,3 +0,0 @@
-package android.dvr;
-
-parcelable ParcelableComposerLayer cpp_header "android/dvr/parcelable_composer_layer.h";
diff --git a/services/vr/hardware_composer/aidl/android/dvr/ParcelableUniqueFd.aidl b/services/vr/hardware_composer/aidl/android/dvr/ParcelableUniqueFd.aidl
deleted file mode 100644
index eee9d13..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/ParcelableUniqueFd.aidl
+++ /dev/null
@@ -1,3 +0,0 @@
-package android.dvr;
-
-parcelable ParcelableUniqueFd cpp_header "android/dvr/parcelable_unique_fd.h";
diff --git a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_frame.cpp b/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_frame.cpp
deleted file mode 100644
index db7d5dc..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_frame.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-#include "aidl/android/dvr/parcelable_composer_frame.h"
-
-#include <binder/Parcel.h>
-
-#include "aidl/android/dvr/parcelable_composer_layer.h"
-
-namespace android {
-namespace dvr {
-
-ParcelableComposerFrame::ParcelableComposerFrame() {}
-
-ParcelableComposerFrame::ParcelableComposerFrame(
-    const ComposerView::Frame& frame)
-    : frame_(frame) {}
-
-ParcelableComposerFrame::~ParcelableComposerFrame() {}
-
-status_t ParcelableComposerFrame::writeToParcel(Parcel* parcel) const {
-  status_t ret = parcel->writeUint64(frame_.display_id);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(frame_.display_width);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(frame_.display_height);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeBool(frame_.removed);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(static_cast<uint32_t>(frame_.active_config));
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(static_cast<uint32_t>(frame_.color_mode));
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(static_cast<uint32_t>(frame_.power_mode));
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(static_cast<uint32_t>(frame_.vsync_enabled));
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(frame_.color_transform_hint);
-  if (ret != OK) return ret;
-
-  for(size_t i = 0; i < 16; i++) {
-    ret = parcel->writeFloat(frame_.color_transform[i]);
-    if (ret != OK) return ret;
-  }
-
-  std::vector<ParcelableComposerLayer> layers;
-  for (size_t i = 0; i < frame_.layers.size(); ++i)
-    layers.push_back(ParcelableComposerLayer(frame_.layers[i]));
-
-  ret = parcel->writeParcelableVector(layers);
-
-  return ret;
-}
-
-status_t ParcelableComposerFrame::readFromParcel(const Parcel* parcel) {
-  status_t ret = parcel->readUint64(&frame_.display_id);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&frame_.display_width);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&frame_.display_height);
-  if (ret != OK) return ret;
-
-  ret = parcel->readBool(&frame_.removed);
-  if (ret != OK) return ret;
-
-  uint32_t value;
-  ret = parcel->readUint32(&value);
-  if (ret != OK) return ret;
-  frame_.active_config = static_cast<Config>(value);
-
-  ret = parcel->readUint32(&value);
-  if (ret != OK) return ret;
-  frame_.color_mode = static_cast<ColorMode>(value);
-
-  ret = parcel->readUint32(&value);
-  if (ret != OK) return ret;
-  frame_.power_mode = static_cast<IComposerClient::PowerMode>(value);
-
-  ret = parcel->readUint32(&value);
-  if (ret != OK) return ret;
-  frame_.vsync_enabled = static_cast<IComposerClient::Vsync>(value);
-
-  ret = parcel->readInt32(&frame_.color_transform_hint);
-  if (ret != OK) return ret;
-
-  for(size_t i = 0; i < 16; i++) {
-    ret = parcel->readFloat(&frame_.color_transform[i]);
-    if (ret != OK) return ret;
-  }
-
-  std::vector<ParcelableComposerLayer> layers;
-  ret = parcel->readParcelableVector(&layers);
-  if (ret != OK) return ret;
-
-  frame_.layers.clear();
-  for (size_t i = 0; i < layers.size(); ++i)
-    frame_.layers.push_back(layers[i].layer());
-
-  return ret;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_frame.h b/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_frame.h
deleted file mode 100644
index a82df7f..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_frame.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_COMPOSER_FRAME_H
-#define ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_COMPOSER_FRAME_H
-
-#include <binder/Parcelable.h>
-#include <impl/vr_hwc.h>
-
-namespace android {
-namespace dvr {
-
-class ParcelableComposerFrame : public Parcelable {
- public:
-  ParcelableComposerFrame();
-  explicit ParcelableComposerFrame(const ComposerView::Frame& frame);
-  ~ParcelableComposerFrame() override;
-
-  ComposerView::Frame frame() const { return frame_; }
-
-  status_t writeToParcel(Parcel* parcel) const override;
-  status_t readFromParcel(const Parcel* parcel) override;
-
- private:
-  ComposerView::Frame frame_;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_COMPOSER_FRAME_H
diff --git a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_layer.cpp b/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_layer.cpp
deleted file mode 100644
index c3621eb..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_layer.cpp
+++ /dev/null
@@ -1,240 +0,0 @@
-#include "aidl/android/dvr/parcelable_composer_layer.h"
-
-#include <binder/Parcel.h>
-#include <ui/Fence.h>
-#include <ui/GraphicBuffer.h>
-#include <ui/GraphicBufferMapper.h>
-
-namespace android {
-namespace dvr {
-
-ParcelableComposerLayer::ParcelableComposerLayer() {}
-
-ParcelableComposerLayer::ParcelableComposerLayer(
-    const ComposerView::ComposerLayer& layer) : layer_(layer) {}
-
-ParcelableComposerLayer::~ParcelableComposerLayer() {}
-
-status_t ParcelableComposerLayer::writeToParcel(Parcel* parcel) const {
-  status_t ret = parcel->writeUint64(layer_.id);
-  if (ret != OK) return ret;
-
-  ret = parcel->write(*layer_.buffer);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeBool(layer_.fence->isValid());
-  if (ret != OK) return ret;
-
-  if (layer_.fence->isValid()) {
-    ret = parcel->writeFileDescriptor(layer_.fence->dup(), true);
-    if (ret != OK) return ret;
-  }
-
-  ret = parcel->writeInt32(layer_.display_frame.left);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.display_frame.top);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.display_frame.right);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.display_frame.bottom);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeFloat(layer_.crop.left);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeFloat(layer_.crop.top);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeFloat(layer_.crop.right);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeFloat(layer_.crop.bottom);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(static_cast<int32_t>(layer_.blend_mode));
-  if (ret != OK) return ret;
-
-  ret = parcel->writeFloat(layer_.alpha);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(layer_.type);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(layer_.app_id);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(layer_.z_order);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.cursor_x);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.cursor_y);
-  if (ret != OK) return ret;
-
-  uint32_t color = layer_.color.r |
-      (static_cast<uint32_t>(layer_.color.g) << 8) |
-      (static_cast<uint32_t>(layer_.color.b) << 16) |
-      (static_cast<uint32_t>(layer_.color.a) << 24);
-  ret = parcel->writeUint32(color);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.dataspace);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeInt32(layer_.transform);
-  if (ret != OK) return ret;
-
-  ret = parcel->writeUint32(static_cast<uint32_t>(layer_.visible_regions.size()));
-  if (ret != OK) return ret;
-
-  for (auto& rect: layer_.visible_regions) {
-    ret = parcel->writeInt32(rect.left);
-    ret = parcel->writeInt32(rect.top);
-    ret = parcel->writeInt32(rect.right);
-    ret = parcel->writeInt32(rect.bottom);
-    if (ret != OK) return ret;
-  }
-
-  ret = parcel->writeUint32(static_cast<uint32_t>(layer_.damaged_regions.size()));
-  if (ret != OK) return ret;
-
-  for (auto& rect: layer_.damaged_regions) {
-    ret = parcel->writeInt32(rect.left);
-    ret = parcel->writeInt32(rect.top);
-    ret = parcel->writeInt32(rect.right);
-    ret = parcel->writeInt32(rect.bottom);
-    if (ret != OK) return ret;
-  }
-
-  return OK;
-}
-
-status_t ParcelableComposerLayer::readFromParcel(const Parcel* parcel) {
-  status_t ret = parcel->readUint64(&layer_.id);
-  if (ret != OK) return ret;
-
-  layer_.buffer = new GraphicBuffer();
-  ret = parcel->read(*layer_.buffer);
-  if (ret != OK) {
-    layer_.buffer.clear();
-    return ret;
-  }
-
-  bool has_fence = 0;
-  ret = parcel->readBool(&has_fence);
-  if (ret != OK) return ret;
-
-  if (has_fence)
-    layer_.fence = new Fence(dup(parcel->readFileDescriptor()));
-  else
-    layer_.fence = new Fence();
-
-  ret = parcel->readInt32(&layer_.display_frame.left);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&layer_.display_frame.top);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&layer_.display_frame.right);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&layer_.display_frame.bottom);
-  if (ret != OK) return ret;
-
-  ret = parcel->readFloat(&layer_.crop.left);
-  if (ret != OK) return ret;
-
-  ret = parcel->readFloat(&layer_.crop.top);
-  if (ret != OK) return ret;
-
-  ret = parcel->readFloat(&layer_.crop.right);
-  if (ret != OK) return ret;
-
-  ret = parcel->readFloat(&layer_.crop.bottom);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(reinterpret_cast<int32_t*>(&layer_.blend_mode));
-  if (ret != OK) return ret;
-
-  ret = parcel->readFloat(&layer_.alpha);
-  if (ret != OK) return ret;
-
-  ret = parcel->readUint32(&layer_.type);
-  if (ret != OK) return ret;
-
-  ret = parcel->readUint32(&layer_.app_id);
-  if (ret != OK) return ret;
-
-  ret = parcel->readUint32(&layer_.z_order);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&layer_.cursor_x);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&layer_.cursor_y);
-  if (ret != OK) return ret;
-
-  uint32_t color;
-  ret = parcel->readUint32(&color);
-  if (ret != OK) return ret;
-  layer_.color.r = color & 0xFF;
-  layer_.color.g = (color >> 8) & 0xFF;
-  layer_.color.b = (color >> 16) & 0xFF;
-  layer_.color.a = (color >> 24) & 0xFF;
-
-  ret = parcel->readInt32(&layer_.dataspace);
-  if (ret != OK) return ret;
-
-  ret = parcel->readInt32(&layer_.transform);
-  if (ret != OK) return ret;
-
-  uint32_t size;
-  ret = parcel->readUint32(&size);
-  if (ret != OK) return ret;
-
-  for(size_t i = 0; i < size; i++) {
-    hwc_rect_t rect;
-    ret = parcel->readInt32(&rect.left);
-    if (ret != OK) return ret;
-
-    ret = parcel->readInt32(&rect.top);
-    if (ret != OK) return ret;
-
-    ret = parcel->readInt32(&rect.right);
-    if (ret != OK) return ret;
-
-    ret = parcel->readInt32(&rect.bottom);
-    if (ret != OK) return ret;
-
-    layer_.visible_regions.push_back(rect);
-  }
-
-  ret = parcel->readUint32(&size);
-  if (ret != OK) return ret;
-
-  for(size_t i = 0; i < size; i++) {
-    hwc_rect_t rect;
-    ret = parcel->readInt32(&rect.left);
-    if (ret != OK) return ret;
-
-    ret = parcel->readInt32(&rect.top);
-    if (ret != OK) return ret;
-
-    ret = parcel->readInt32(&rect.right);
-    if (ret != OK) return ret;
-
-    ret = parcel->readInt32(&rect.bottom);
-    if (ret != OK) return ret;
-
-    layer_.damaged_regions.push_back(rect);
-  }
-
-  return OK;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_layer.h b/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_layer.h
deleted file mode 100644
index 6d2ac09..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/parcelable_composer_layer.h
+++ /dev/null
@@ -1,30 +0,0 @@
-#ifndef ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_COMPOSER_LAYER_H
-#define ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_COMPOSER_LAYER_H
-
-#include <binder/Parcelable.h>
-#include <impl/vr_hwc.h>
-
-#include <memory>
-
-namespace android {
-namespace dvr {
-
-class ParcelableComposerLayer : public Parcelable {
- public:
-  ParcelableComposerLayer();
-  explicit ParcelableComposerLayer(const ComposerView::ComposerLayer& layer);
-  ~ParcelableComposerLayer() override;
-
-  ComposerView::ComposerLayer layer() const { return layer_; }
-
-  status_t writeToParcel(Parcel* parcel) const override;
-  status_t readFromParcel(const Parcel* parcel) override;
-
- private:
-  ComposerView::ComposerLayer layer_;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_COMPOSER_LAYER_H
diff --git a/services/vr/hardware_composer/aidl/android/dvr/parcelable_unique_fd.cpp b/services/vr/hardware_composer/aidl/android/dvr/parcelable_unique_fd.cpp
deleted file mode 100644
index 9486f3c..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/parcelable_unique_fd.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#include "android/dvr/parcelable_unique_fd.h"
-
-#include <binder/Parcel.h>
-
-namespace android {
-namespace dvr {
-
-ParcelableUniqueFd::ParcelableUniqueFd() {}
-
-ParcelableUniqueFd::ParcelableUniqueFd(const base::unique_fd& fence)
-    : fence_(dup(fence.get())) {}
-
-ParcelableUniqueFd::~ParcelableUniqueFd() {}
-
-status_t ParcelableUniqueFd::writeToParcel(Parcel* parcel) const {
-  status_t ret = parcel->writeBool(fence_.get() >= 0);
-  if (ret != OK) return ret;
-
-  if (fence_.get() >= 0)
-    ret = parcel->writeUniqueFileDescriptor(fence_);
-
-  return ret;
-}
-
-status_t ParcelableUniqueFd::readFromParcel(const Parcel* parcel) {
-  bool has_fence = 0;
-  status_t ret = parcel->readBool(&has_fence);
-  if (ret != OK) return ret;
-
-  if (has_fence)
-    ret = parcel->readUniqueFileDescriptor(&fence_);
-
-  return ret;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/aidl/android/dvr/parcelable_unique_fd.h b/services/vr/hardware_composer/aidl/android/dvr/parcelable_unique_fd.h
deleted file mode 100644
index c4216f6..0000000
--- a/services/vr/hardware_composer/aidl/android/dvr/parcelable_unique_fd.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_UNIQUE_FD_H
-#define ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_UNIQUE_FD_H
-
-#include <android-base/unique_fd.h>
-#include <binder/Parcelable.h>
-
-namespace android {
-namespace dvr {
-
-// Provide a wrapper to serialized base::unique_fd. The wrapper also handles the
-// case where the FD is invalid (-1), unlike FileDescriptor which expects a
-// valid FD.
-class ParcelableUniqueFd : public Parcelable {
- public:
-  ParcelableUniqueFd();
-  explicit ParcelableUniqueFd(const base::unique_fd& fence);
-  ~ParcelableUniqueFd() override;
-
-  void set_fence(const base::unique_fd& fence) {
-    fence_.reset(dup(fence.get()));
-  }
-  base::unique_fd fence() const { return base::unique_fd(dup(fence_.get())); }
-
-  status_t writeToParcel(Parcel* parcel) const override;
-  status_t readFromParcel(const Parcel* parcel) override;
-
- private:
-  base::unique_fd fence_;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_HARDWARE_COMPOSER_AIDL_ANDROID_DVR_PARCELABLE_UNIQUE_FD_H
diff --git a/services/vr/hardware_composer/impl/vr_composer_client.cpp b/services/vr/hardware_composer/impl/vr_composer_client.cpp
deleted file mode 100644
index dd1603d..0000000
--- a/services/vr/hardware_composer/impl/vr_composer_client.cpp
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android/frameworks/vr/composer/2.0/IVrComposerClient.h>
-#include <hardware/gralloc.h>
-#include <hardware/gralloc1.h>
-#include <log/log.h>
-
-#include <memory>
-
-#include "impl/vr_hwc.h"
-#include "impl/vr_composer_client.h"
-
-namespace android {
-namespace dvr {
-
-using android::frameworks::vr::composer::V2_0::IVrComposerClient;
-
-VrComposerClient::VrComposerClient(dvr::VrHwc& hal)
-    : ComposerClient(&hal), mVrHal(hal) {
-  if (!init()) {
-      LOG_ALWAYS_FATAL("failed to initialize VrComposerClient");
-  }
-}
-
-VrComposerClient::~VrComposerClient() {}
-
-std::unique_ptr<ComposerCommandEngine>
-VrComposerClient::createCommandEngine() {
-  return std::make_unique<VrCommandEngine>(*this);
-}
-
-VrComposerClient::VrCommandEngine::VrCommandEngine(VrComposerClient& client)
-    : ComposerCommandEngine(client.mHal, client.mResources.get()),
-      mVrHal(client.mVrHal) {}
-
-VrComposerClient::VrCommandEngine::~VrCommandEngine() {}
-
-bool VrComposerClient::VrCommandEngine::executeCommand(
-    hardware::graphics::composer::V2_1::IComposerClient::Command command,
-    uint16_t length) {
-  IVrComposerClient::VrCommand vrCommand =
-      static_cast<IVrComposerClient::VrCommand>(command);
-  switch (vrCommand) {
-    case IVrComposerClient::VrCommand::SET_LAYER_INFO:
-      return executeSetLayerInfo(length);
-    case IVrComposerClient::VrCommand::SET_CLIENT_TARGET_METADATA:
-      return executeSetClientTargetMetadata(length);
-    case IVrComposerClient::VrCommand::SET_LAYER_BUFFER_METADATA:
-      return executeSetLayerBufferMetadata(length);
-    default:
-      return ComposerCommandEngine::executeCommand(command, length);
-  }
-}
-
-bool VrComposerClient::VrCommandEngine::executeSetLayerInfo(uint16_t length) {
-  if (length != 2) {
-    return false;
-  }
-
-  auto err = mVrHal.setLayerInfo(mCurrentDisplay, mCurrentLayer, read(), read());
-  if (err != Error::NONE) {
-    mWriter->setError(getCommandLoc(), err);
-  }
-
-  return true;
-}
-
-bool VrComposerClient::VrCommandEngine::executeSetClientTargetMetadata(
-    uint16_t length) {
-  if (length != 7)
-    return false;
-
-  auto err = mVrHal.setClientTargetMetadata(mCurrentDisplay, readBufferMetadata());
-  if (err != Error::NONE)
-    mWriter->setError(getCommandLoc(), err);
-
-  return true;
-}
-
-bool VrComposerClient::VrCommandEngine::executeSetLayerBufferMetadata(
-    uint16_t length) {
-  if (length != 7)
-    return false;
-
-  auto err = mVrHal.setLayerBufferMetadata(mCurrentDisplay, mCurrentLayer,
-                                           readBufferMetadata());
-  if (err != Error::NONE)
-    mWriter->setError(getCommandLoc(), err);
-
-  return true;
-}
-
-IVrComposerClient::BufferMetadata
-VrComposerClient::VrCommandEngine::readBufferMetadata() {
-  IVrComposerClient::BufferMetadata metadata = {
-      .width = read(),
-      .height = read(),
-      .stride = read(),
-      .layerCount = read(),
-      .format =
-          static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(
-              readSigned()),
-      .usage = read64(),
-  };
-  return metadata;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/impl/vr_composer_client.h b/services/vr/hardware_composer/impl/vr_composer_client.h
deleted file mode 100644
index 1b2b5f4..0000000
--- a/services/vr/hardware_composer/impl/vr_composer_client.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_DVR_HARDWARE_COMPOSER_IMPL_VR_COMPOSER_CLIENT_H
-#define ANDROID_DVR_HARDWARE_COMPOSER_IMPL_VR_COMPOSER_CLIENT_H
-
-#include <android/frameworks/vr/composer/2.0/IVrComposerClient.h>
-#include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
-#include <composer-hal/2.1/ComposerClient.h>
-#include <composer-hal/2.1/ComposerCommandEngine.h>
-#include <composer-hal/2.2/ComposerClient.h>
-#include <composer-hal/2.3/ComposerClient.h>
-
-namespace android {
-namespace dvr {
-
-class VrHwc;
-
-using hardware::graphics::composer::V2_1::hal::ComposerCommandEngine;
-using hardware::graphics::composer::V2_3::hal::ComposerHal;
-using hardware::graphics::composer::V2_3::hal::detail::ComposerClientImpl;
-
-using ComposerClient = ComposerClientImpl<IVrComposerClient, ComposerHal>;
-
-class VrComposerClient : public ComposerClient {
- public:
-  explicit VrComposerClient(android::dvr::VrHwc& hal);
-  virtual ~VrComposerClient();
-
- private:
-  class VrCommandEngine : public ComposerCommandEngine {
-   public:
-    explicit VrCommandEngine(VrComposerClient& client);
-    ~VrCommandEngine() override;
-
-    bool executeCommand(
-        hardware::graphics::composer::V2_1::IComposerClient::Command command,
-        uint16_t length) override;
-
-   private:
-    bool executeSetLayerInfo(uint16_t length);
-    bool executeSetClientTargetMetadata(uint16_t length);
-    bool executeSetLayerBufferMetadata(uint16_t length);
-
-    IVrComposerClient::BufferMetadata readBufferMetadata();
-
-    android::dvr::VrHwc& mVrHal;
-
-    VrCommandEngine(const VrCommandEngine&) = delete;
-    void operator=(const VrCommandEngine&) = delete;
-  };
-
-  VrComposerClient(const VrComposerClient&) = delete;
-  void operator=(const VrComposerClient&) = delete;
-
-  std::unique_ptr<ComposerCommandEngine> createCommandEngine() override;
-  dvr::VrHwc& mVrHal;
-};
-
-} // namespace dvr
-} // namespace android
-
-#endif  // ANDROID_DVR_HARDWARE_COMPOSER_IMPL_VR_COMPOSER_CLIENT_H
diff --git a/services/vr/hardware_composer/impl/vr_hwc.cpp b/services/vr/hardware_composer/impl/vr_hwc.cpp
deleted file mode 100644
index e530b16..0000000
--- a/services/vr/hardware_composer/impl/vr_hwc.cpp
+++ /dev/null
@@ -1,1178 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "impl/vr_hwc.h"
-
-#include "android-base/stringprintf.h"
-#include <binder/IServiceManager.h>
-#include <cutils/properties.h>
-#include <private/dvr/display_client.h>
-#include <ui/Fence.h>
-#include <utils/Trace.h>
-
-#include <mutex>
-
-#include "vr_composer_client.h"
-
-using namespace android::hardware::graphics::common::V1_0;
-using namespace android::hardware::graphics::composer::V2_3;
-
-using android::base::StringPrintf;
-using android::hardware::hidl_handle;
-using android::hardware::hidl_string;
-using android::hardware::hidl_vec;
-using android::hardware::Return;
-using android::hardware::Void;
-
-namespace types = android::hardware::graphics::common;
-
-namespace android {
-namespace dvr {
-namespace {
-
-const Display kDefaultDisplayId = 1;
-const Config kDefaultConfigId = 1;
-
-sp<GraphicBuffer> CreateGraphicBuffer(
-    const native_handle_t* handle,
-    const IVrComposerClient::BufferMetadata& metadata) {
-   sp<GraphicBuffer> buffer = new GraphicBuffer(
-      handle, GraphicBuffer::CLONE_HANDLE, metadata.width, metadata.height,
-      static_cast<int32_t>(metadata.format), metadata.layerCount,
-      metadata.usage, metadata.stride);
-   if (buffer->initCheck() != OK) {
-     ALOGE("Failed to create graphic buffer");
-     return nullptr;
-   }
-
-   return buffer;
-}
-
-void GetPrimaryDisplaySize(int32_t* width, int32_t* height) {
-  *width = 1080;
-  *height = 1920;
-
-  int error = 0;
-  auto display_client = display::DisplayClient::Create(&error);
-  if (!display_client) {
-    ALOGE("Could not connect to display service : %s(%d)", strerror(error),
-          error);
-    return;
-  }
-
-  auto status = display_client->GetDisplayMetrics();
-  if (!status) {
-    ALOGE("Could not get display metrics from display service : %s(%d)",
-          status.GetErrorMessage().c_str(), status.error());
-    return;
-  }
-
-  *width = status.get().display_width;
-  *height = status.get().display_height;
-}
-
-}  // namespace
-
-HwcDisplay::HwcDisplay(int32_t width, int32_t height)
-    : width_(width), height_(height) {}
-
-HwcDisplay::~HwcDisplay() {}
-
-bool HwcDisplay::SetClientTarget(const native_handle_t* handle,
-                                 base::unique_fd fence) {
-  if (handle)
-    buffer_ = CreateGraphicBuffer(handle, buffer_metadata_);
-
-  fence_ = new Fence(fence.release());
-  return true;
-}
-
-void HwcDisplay::SetClientTargetMetadata(
-    const IVrComposerClient::BufferMetadata& metadata) {
-  buffer_metadata_ = metadata;
-}
-
-HwcLayer* HwcDisplay::CreateLayer() {
-  uint64_t layer_id = layer_ids_++;
-  layers_.push_back(HwcLayer(layer_id));
-  return &layers_.back();
-}
-
-HwcLayer* HwcDisplay::GetLayer(Layer id) {
-  for (size_t i = 0; i < layers_.size(); ++i)
-    if (layers_[i].info.id == id)
-      return &layers_[i];
-
-  return nullptr;
-}
-
-bool HwcDisplay::DestroyLayer(Layer id) {
-  for (auto it = layers_.begin(); it != layers_.end(); ++it) {
-    if (it->info.id == id) {
-      layers_.erase(it);
-      return true;
-    }
-  }
-
-  return false;
-}
-
-void HwcDisplay::GetChangedCompositionTypes(
-    std::vector<Layer>* layer_ids,
-    std::vector<IComposerClient::Composition>* types) {
-  std::sort(layers_.begin(), layers_.end(),
-            [](const auto& lhs, const auto& rhs) {
-              return lhs.info.z_order < rhs.info.z_order;
-            });
-
-  const size_t no_layer = std::numeric_limits<size_t>::max();
-  size_t first_client_layer = no_layer, last_client_layer = no_layer;
-  for (size_t i = 0; i < layers_.size(); ++i) {
-    switch (layers_[i].composition_type) {
-      case IComposerClient::Composition::SOLID_COLOR:
-      case IComposerClient::Composition::CURSOR:
-      case IComposerClient::Composition::SIDEBAND:
-        if (first_client_layer == no_layer)
-          first_client_layer = i;
-
-        last_client_layer = i;
-        break;
-      default:
-        break;
-    }
-  }
-
-  for (size_t i = 0; i < layers_.size(); ++i) {
-    if (i >= first_client_layer && i <= last_client_layer) {
-      if (layers_[i].composition_type != IComposerClient::Composition::CLIENT) {
-        layer_ids->push_back(layers_[i].info.id);
-        types->push_back(IComposerClient::Composition::CLIENT);
-        layers_[i].composition_type = IComposerClient::Composition::CLIENT;
-      }
-
-      continue;
-    }
-
-    if (layers_[i].composition_type != IComposerClient::Composition::DEVICE) {
-      layer_ids->push_back(layers_[i].info.id);
-      types->push_back(IComposerClient::Composition::DEVICE);
-      layers_[i].composition_type = IComposerClient::Composition::DEVICE;
-    }
-  }
-}
-
-Error HwcDisplay::GetFrame(
-    std::vector<ComposerView::ComposerLayer>* out_frames) {
-  bool queued_client_target = false;
-  std::vector<ComposerView::ComposerLayer> frame;
-  for (const auto& layer : layers_) {
-    if (layer.composition_type == IComposerClient::Composition::CLIENT) {
-      if (queued_client_target)
-        continue;
-
-      if (!buffer_.get()) {
-        ALOGE("Client composition requested but no client target buffer");
-        return Error::BAD_LAYER;
-      }
-
-      ComposerView::ComposerLayer client_target_layer = {
-          .buffer = buffer_,
-          .fence = fence_.get() ? fence_ : new Fence(-1),
-          .display_frame = {0, 0, static_cast<int32_t>(buffer_->getWidth()),
-            static_cast<int32_t>(buffer_->getHeight())},
-          .crop = {0.0f, 0.0f, static_cast<float>(buffer_->getWidth()),
-            static_cast<float>(buffer_->getHeight())},
-          .blend_mode = IComposerClient::BlendMode::NONE,
-      };
-
-      frame.push_back(client_target_layer);
-      queued_client_target = true;
-    } else {
-      if (!layer.info.buffer.get() || !layer.info.fence.get()) {
-        ALOGV("Layer requested without valid buffer");
-        continue;
-      }
-
-      frame.push_back(layer.info);
-    }
-  }
-
-  out_frames->swap(frame);
-  return Error::NONE;
-}
-
-std::vector<Layer> HwcDisplay::UpdateLastFrameAndGetLastFrameLayers() {
-  std::vector<Layer> last_frame_layers;
-  last_frame_layers.swap(last_frame_layers_ids_);
-
-  for (const auto& layer : layers_)
-    last_frame_layers_ids_.push_back(layer.info.id);
-
-  return last_frame_layers;
-}
-
-void HwcDisplay::SetColorTransform(const float* matrix, int32_t hint) {
-  color_transform_hint_ = hint;
-  if (matrix)
-    memcpy(color_transform_, matrix, sizeof(color_transform_));
-}
-
-void HwcDisplay::dumpDebugInfo(std::string* result) const {
-  if (!result) {
-    return;
-  }
-  *result += StringPrintf("HwcDisplay: width: %d, height: %d, layers size: %zu, colormode: %d\
-      , config: %d\n", width_, height_, layers_.size(), color_mode_, active_config_);
-  *result += StringPrintf("HwcDisplay buffer metadata: width: %d, height: %d, stride: %d,\
-      layerCount: %d, pixelFormat: %d\n", buffer_metadata_.width, buffer_metadata_.height,
-      buffer_metadata_.stride, buffer_metadata_.layerCount, buffer_metadata_.format);
-  for (const auto& layer : layers_) {
-    layer.dumpDebugInfo(result);
-  }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// VrHwcClient
-
-VrHwc::VrHwc() {
-  vsync_callback_ = new VsyncCallback;
-}
-
-VrHwc::~VrHwc() {
-  vsync_callback_->SetEventCallback(nullptr);
-}
-
-bool VrHwc::hasCapability(hwc2_capability_t /* capability */) { return false; }
-
-void VrHwc::registerEventCallback(EventCallback* callback) {
-  std::unique_lock<std::mutex> lock(mutex_);
-  event_callback_ = callback;
-  int32_t width, height;
-  GetPrimaryDisplaySize(&width, &height);
-  // Create the primary display late to avoid initialization issues between
-  // VR HWC and SurfaceFlinger.
-  displays_[kDefaultDisplayId].reset(new HwcDisplay(width, height));
-
-  // Surface flinger will make calls back into vr_hwc when it receives the
-  // onHotplug() call, so it's important to release mutex_ here.
-  lock.unlock();
-  event_callback_->onHotplug(kDefaultDisplayId,
-                             hardware::graphics::composer::V2_1::
-                                 IComposerCallback::Connection::CONNECTED);
-  lock.lock();
-  UpdateVsyncCallbackEnabledLocked();
-}
-
-void VrHwc::unregisterEventCallback() {
-  std::lock_guard<std::mutex> guard(mutex_);
-  event_callback_ = nullptr;
-  UpdateVsyncCallbackEnabledLocked();
-}
-
-uint32_t VrHwc::getMaxVirtualDisplayCount() { return 1; }
-
-Error VrHwc::destroyVirtualDisplay(Display display) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (display == kDefaultDisplayId || displays_.erase(display) == 0)
-    return Error::BAD_DISPLAY;
-  ComposerView::Frame frame;
-  frame.display_id = display;
-  frame.removed = true;
-  if (observer_)
-    observer_->OnNewFrame(frame);
-  return Error::NONE;
-}
-
-Error VrHwc::createLayer(Display display, Layer* outLayer) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* layer = display_ptr->CreateLayer();
-  *outLayer = layer->info.id;
-  return Error::NONE;
-}
-
-Error VrHwc::destroyLayer(Display display, Layer layer) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr) {
-    return Error::BAD_DISPLAY;
-  }
-
-  return display_ptr->DestroyLayer(layer) ? Error::NONE : Error::BAD_LAYER;
-}
-
-Error VrHwc::getActiveConfig(Display display, Config* outConfig) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (!FindDisplay(display))
-    return Error::BAD_DISPLAY;
-  *outConfig = kDefaultConfigId;
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayAttribute(Display display, Config config,
-                                 IComposerClient::Attribute attribute,
-                                 int32_t* outValue) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr) {
-    return Error::BAD_DISPLAY;
-  }
-  if (config != kDefaultConfigId) {
-    return Error::BAD_CONFIG;
-  }
-
-  switch (attribute) {
-    case IComposerClient::Attribute::WIDTH:
-      *outValue = display_ptr->width();
-      break;
-    case IComposerClient::Attribute::HEIGHT:
-      *outValue = display_ptr->height();
-      break;
-    case IComposerClient::Attribute::VSYNC_PERIOD:
-      {
-        int error = 0;
-        auto display_client = display::DisplayClient::Create(&error);
-        if (!display_client) {
-          ALOGE("Could not connect to display service : %s(%d)",
-                strerror(error), error);
-          // Return a default value of 30 fps
-          *outValue = 1000 * 1000 * 1000 / 30;
-        } else {
-          auto metrics = display_client->GetDisplayMetrics();
-          *outValue = metrics.get().vsync_period_ns;
-        }
-      }
-      break;
-    case IComposerClient::Attribute::DPI_X:
-    case IComposerClient::Attribute::DPI_Y:
-      {
-        constexpr int32_t kDefaultDPI = 300;
-        int32_t dpi = property_get_int32("ro.vr.hwc.dpi", kDefaultDPI);
-        if (dpi <= 0) {
-          dpi = kDefaultDPI;
-        }
-        *outValue = 1000 * dpi;
-      }
-      break;
-    default:
-      return Error::BAD_PARAMETER;
-  }
-
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayConfigs(Display display, hidl_vec<Config>* outConfigs) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (!FindDisplay(display))
-    return Error::BAD_DISPLAY;
-  std::vector<Config> configs(1, kDefaultConfigId);
-  *outConfigs = hidl_vec<Config>(configs);
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayName(Display /* display */, hidl_string* outName) {
-  *outName = hidl_string();
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayType(Display display,
-                            IComposerClient::DisplayType* outType) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr) {
-    *outType = IComposerClient::DisplayType::INVALID;
-    return Error::BAD_DISPLAY;
-  }
-
-  if (display == kDefaultDisplayId)
-    *outType = IComposerClient::DisplayType::PHYSICAL;
-  else
-    *outType = IComposerClient::DisplayType::VIRTUAL;
-
-  return Error::NONE;
-}
-
-Error VrHwc::getDozeSupport(Display display, bool* outSupport) {
-  *outSupport = false;
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (!FindDisplay(display))
-    return Error::BAD_DISPLAY;
-  return Error::NONE;
-}
-
-Error VrHwc::setActiveConfig(Display display, Config config) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-  if (config != kDefaultConfigId)
-    return Error::BAD_CONFIG;
-
-  display_ptr->set_active_config(config);
-  return Error::NONE;
-}
-
-Error VrHwc::setVsyncEnabled(Display display, IComposerClient::Vsync enabled) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  if (enabled != IComposerClient::Vsync::ENABLE &&
-      enabled != IComposerClient::Vsync::DISABLE) {
-    return Error::BAD_PARAMETER;
-  }
-
-  Error set_vsync_result = Error::NONE;
-  if (display == kDefaultDisplayId) {
-    sp<IVsyncService> vsync_service = interface_cast<IVsyncService>(
-        defaultServiceManager()->getService(
-            String16(IVsyncService::GetServiceName())));
-    if (vsync_service == nullptr) {
-      ALOGE("Failed to get vsync service");
-      return Error::NO_RESOURCES;
-    }
-
-    if (enabled == IComposerClient::Vsync::ENABLE) {
-      ALOGI("Enable vsync");
-      display_ptr->set_vsync_enabled(true);
-      status_t result = vsync_service->registerCallback(vsync_callback_);
-      if (result != OK) {
-        ALOGE("%s service registerCallback() failed: %s (%d)",
-            IVsyncService::GetServiceName(), strerror(-result), result);
-        set_vsync_result = Error::NO_RESOURCES;
-      }
-    } else if (enabled == IComposerClient::Vsync::DISABLE) {
-      ALOGI("Disable vsync");
-      display_ptr->set_vsync_enabled(false);
-      status_t result = vsync_service->unregisterCallback(vsync_callback_);
-      if (result != OK) {
-        ALOGE("%s service unregisterCallback() failed: %s (%d)",
-            IVsyncService::GetServiceName(), strerror(-result), result);
-        set_vsync_result = Error::NO_RESOURCES;
-      }
-    }
-
-    UpdateVsyncCallbackEnabledLocked();
-  }
-
-  return set_vsync_result;
-}
-
-Error VrHwc::setColorTransform(Display display, const float* matrix,
-                               int32_t hint) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  display_ptr->SetColorTransform(matrix, hint);
-  return Error::NONE;
-}
-
-Error VrHwc::setClientTarget(Display display, buffer_handle_t target,
-                             int32_t acquireFence, int32_t /* dataspace */,
-                             const std::vector<hwc_rect_t>& /* damage */) {
-  base::unique_fd fence(acquireFence);
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  if (target == nullptr)
-    return Error::NONE;
-
-  if (!display_ptr->SetClientTarget(target, std::move(fence)))
-    return Error::BAD_PARAMETER;
-
-  return Error::NONE;
-}
-
-Error VrHwc::setOutputBuffer(Display display, buffer_handle_t /* buffer */,
-                             int32_t releaseFence) {
-  base::unique_fd fence(releaseFence);
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  // TODO(dnicoara): Is it necessary to do anything here?
-  return Error::NONE;
-}
-
-Error VrHwc::validateDisplay(
-    Display display, std::vector<Layer>* outChangedLayers,
-    std::vector<IComposerClient::Composition>* outCompositionTypes,
-    uint32_t* /* outDisplayRequestMask */,
-    std::vector<Layer>* /* outRequestedLayers */,
-    std::vector<uint32_t>* /* outRequestMasks */) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  display_ptr->GetChangedCompositionTypes(outChangedLayers,
-                                          outCompositionTypes);
-  return Error::NONE;
-}
-
-Error VrHwc::acceptDisplayChanges(Display /* display */) { return Error::NONE; }
-
-Error VrHwc::presentDisplay(Display display, int32_t* outPresentFence,
-                            std::vector<Layer>* outLayers,
-                            std::vector<int32_t>* outReleaseFences) {
-  *outPresentFence = -1;
-  outLayers->clear();
-  outReleaseFences->clear();
-
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  ComposerView::Frame frame;
-  std::vector<Layer> last_frame_layers;
-  Error status = display_ptr->GetFrame(&frame.layers);
-  frame.display_id = display;
-  frame.display_width = display_ptr->width();
-  frame.display_height = display_ptr->height();
-  frame.active_config = display_ptr->active_config();
-  frame.power_mode = display_ptr->power_mode();
-  frame.vsync_enabled = display_ptr->vsync_enabled() ?
-      IComposerClient::Vsync::ENABLE : IComposerClient::Vsync::DISABLE;
-  frame.color_transform_hint = display_ptr->color_transform_hint();
-  frame.color_mode = display_ptr->color_mode();
-  memcpy(frame.color_transform, display_ptr->color_transform(),
-         sizeof(frame.color_transform));
-  if (status != Error::NONE)
-    return status;
-
-  last_frame_layers = display_ptr->UpdateLastFrameAndGetLastFrameLayers();
-
-  base::unique_fd fence;
-  if (observer_)
-    fence = observer_->OnNewFrame(frame);
-
-  if (fence.get() < 0)
-    return Error::NONE;
-
-  *outPresentFence = dup(fence.get());
-  outLayers->swap(last_frame_layers);
-  for (size_t i = 0; i < outLayers->size(); ++i)
-    outReleaseFences->push_back(dup(fence.get()));
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerCursorPosition(Display display, Layer layer, int32_t x,
-                                    int32_t y) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.cursor_x = x;
-  hwc_layer->info.cursor_y = y;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerBuffer(Display display, Layer layer,
-                            buffer_handle_t buffer, int32_t acquireFence) {
-  base::unique_fd fence(acquireFence);
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.buffer = CreateGraphicBuffer(
-      buffer, hwc_layer->buffer_metadata);
-  hwc_layer->info.fence = new Fence(fence.release());
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerSurfaceDamage(Display display, Layer layer,
-                                   const std::vector<hwc_rect_t>& damage) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.damaged_regions = damage;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerBlendMode(Display display, Layer layer, int32_t mode) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.blend_mode =
-      static_cast<ComposerView::ComposerLayer::BlendMode>(mode);
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerColor(Display display, Layer layer,
-                           IComposerClient::Color color) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.color = color;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerCompositionType(Display display, Layer layer,
-                                     int32_t type) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->composition_type = static_cast<HwcLayer::Composition>(type);
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerDataspace(Display display, Layer layer,
-                               int32_t dataspace) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.dataspace = dataspace;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerDisplayFrame(Display display, Layer layer,
-                                  const hwc_rect_t& frame) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.display_frame =
-      {frame.left, frame.top, frame.right, frame.bottom};
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerPlaneAlpha(Display display, Layer layer, float alpha) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.alpha = alpha;
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerSidebandStream(Display display, Layer /* layer */,
-                                    buffer_handle_t /* stream */) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (!FindDisplay(display))
-    return Error::BAD_DISPLAY;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerSourceCrop(Display display, Layer layer,
-                                const hwc_frect_t& crop) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.crop = {crop.left, crop.top, crop.right, crop.bottom};
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerTransform(Display display, Layer layer,
-                               int32_t transform) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.transform = transform;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerVisibleRegion(Display display, Layer layer,
-                                   const std::vector<hwc_rect_t>& visible) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.visible_regions = visible;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerZOrder(Display display, Layer layer, uint32_t z) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.z_order = z;
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerInfo(Display display, Layer layer, uint32_t type,
-                          uint32_t appId) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->info.type = type;
-  hwc_layer->info.app_id = appId;
-
-  return Error::NONE;
-}
-
-Error VrHwc::setClientTargetMetadata(
-    Display display, const IVrComposerClient::BufferMetadata& metadata) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  display_ptr->SetClientTargetMetadata(metadata);
-
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerBufferMetadata(
-    Display display, Layer layer,
-    const IVrComposerClient::BufferMetadata& metadata) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  HwcLayer* hwc_layer = display_ptr->GetLayer(layer);
-  if (!hwc_layer)
-    return Error::BAD_LAYER;
-
-  hwc_layer->buffer_metadata = metadata;
-
-  return Error::NONE;
-}
-
-Return<void> VrHwc::getCapabilities(getCapabilities_cb hidl_cb) {
-  hidl_cb(hidl_vec<Capability>());
-  return Void();
-}
-
-Return<void> VrHwc::dumpDebugInfo(dumpDebugInfo_cb hidl_cb) {
-  std::string result;
-
-  {
-    std::lock_guard<std::mutex> guard(mutex_);
-    result = "\nVrHwc states:\n";
-    for (const auto& pair : displays_) {
-      result += StringPrintf("Display id: %lu\n", (unsigned long)pair.first);
-      pair.second->dumpDebugInfo(&result);
-    }
-    result += "\n";
-  }
-
-  hidl_cb(hidl_string(result));
-  return Void();
-}
-
-Return<void> VrHwc::createClient(createClient_cb hidl_cb) {
-  std::lock_guard<std::mutex> guard(mutex_);
-
-  Error status = Error::NONE;
-  sp<VrComposerClient> client;
-  if (!client_.promote().get()) {
-    client = new VrComposerClient(*this);
-  } else {
-    ALOGE("Already have a client");
-    status = Error::NO_RESOURCES;
-  }
-
-  client_ = client;
-  hidl_cb(status, client);
-  return Void();
-}
-
-Return<void> VrHwc::createClient_2_3(IComposer::createClient_2_3_cb hidl_cb) {
-  std::lock_guard<std::mutex> guard(mutex_);
-
-  Error status = Error::NONE;
-  sp<VrComposerClient> client;
-  if (!client_.promote().get()) {
-    client = new VrComposerClient(*this);
-  } else {
-    ALOGE("Already have a client");
-    status = Error::NO_RESOURCES;
-  }
-
-  client_ = client;
-  hidl_cb(status, client);
-  return Void();
-}
-
-void VrHwc::ForceDisplaysRefresh() {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (event_callback_ != nullptr) {
-    for (const auto& pair : displays_)
-      event_callback_->onRefresh(pair.first);
-  }
-}
-
-void VrHwc::RegisterObserver(Observer* observer) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (observer_)
-    ALOGE("Overwriting observer");
-  else
-    observer_ = observer;
-}
-
-void VrHwc::UnregisterObserver(Observer* observer) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (observer != observer_)
-    ALOGE("Trying to unregister unknown observer");
-  else
-    observer_ = nullptr;
-}
-
-HwcDisplay* VrHwc::FindDisplay(Display display) {
-  auto iter = displays_.find(display);
-  return iter == displays_.end() ? nullptr : iter->second.get();
-}
-
-void VrHwc::UpdateVsyncCallbackEnabledLocked() {
-  auto primary_display = FindDisplay(kDefaultDisplayId);
-  LOG_ALWAYS_FATAL_IF(event_callback_ != nullptr && primary_display == nullptr,
-      "Should have created the primary display by now");
-  bool send_vsync =
-      event_callback_ != nullptr && primary_display->vsync_enabled();
-  vsync_callback_->SetEventCallback(send_vsync ? event_callback_ : nullptr);
-}
-
-Return<void> VrHwc::debug(const hidl_handle& fd,
-                          const hidl_vec<hidl_string>& args) {
-  std::string result;
-
-  {
-    std::lock_guard<std::mutex> guard(mutex_);
-    for (const auto& pair : displays_) {
-      result += StringPrintf("Display id: %d\n", static_cast<int>(pair.first));
-      pair.second->dumpDebugInfo(&result);
-    }
-    result += "\n";
-  }
-
-  FILE* out = fdopen(dup(fd->data[0]), "w");
-  fprintf(out, "%s", result.c_str());
-  fclose(out);
-
-  return Void();
-}
-
-void HwcLayer::dumpDebugInfo(std::string* result) const {
-  if (!result) {
-    return;
-  }
-  *result += StringPrintf("Layer: composition_type: %d, type: %d, app_id: %d, z_order: %d,\
-      cursor_x: %d, cursor_y: %d, color(rgba): (%d,%d,%d,%d), dataspace: %d, transform: %d,\
-      display_frame(LTRB): (%d,%d,%d,%d), crop(LTRB): (%.1f,%.1f,%.1f,%.1f), blend_mode: %d\n",
-      composition_type, info.type, info.app_id, info.z_order, info.cursor_x, info.cursor_y,
-      info.color.r, info.color.g, info.color.b, info.color.a, info.dataspace, info.transform,
-      info.display_frame.left, info.display_frame.top, info.display_frame.right,
-      info.display_frame.bottom, info.crop.left, info.crop.top, info.crop.right,
-      info.crop.bottom, info.blend_mode);
-  *result += StringPrintf("Layer buffer metadata: width: %d, height: %d, stride: %d, layerCount: %d\
-      , pixelFormat: %d\n", buffer_metadata.width, buffer_metadata.height, buffer_metadata.stride,
-      buffer_metadata.layerCount, buffer_metadata.format);
-}
-
-status_t VrHwc::VsyncCallback::onVsync(int64_t vsync_timestamp) {
-  ATRACE_NAME("vr_hwc onVsync");
-  std::lock_guard<std::mutex> guard(mutex_);
-  if (callback_ != nullptr)
-    callback_->onVsync(kDefaultDisplayId, vsync_timestamp);
-  return OK;
-}
-
-void VrHwc::VsyncCallback::SetEventCallback(EventCallback* callback) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  callback_ = callback;
-}
-
-// composer::V2_2::ComposerHal
-Error VrHwc::setReadbackBuffer(Display display,
-                               const native_handle_t* bufferHandle,
-                               android::base::unique_fd fenceFd) {
-  return Error::NONE;
-}
-
-Error VrHwc::getReadbackBufferFence(Display display,
-                                    android::base::unique_fd* outFenceFd) {
-  return Error::NONE;
-}
-
-Error VrHwc::createVirtualDisplay_2_2(uint32_t width, uint32_t height,
-                                      types::V1_1::PixelFormat* format,
-                                      Display* outDisplay) {
-  *format = types::V1_1::PixelFormat::RGBA_8888;
-  *outDisplay = display_count_;
-  displays_[display_count_].reset(new HwcDisplay(width, height));
-  display_count_++;
-  return Error::NONE;
-}
-
-Error VrHwc::setPowerMode_2_2(Display display,
-                              IComposerClient::PowerMode mode) {
-  bool dozeSupported = false;
-
-  Error dozeSupportError = getDozeSupport(display, &dozeSupported);
-
-  if (dozeSupportError != Error::NONE)
-    return dozeSupportError;
-
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  if (mode < IComposerClient::PowerMode::OFF ||
-      mode > IComposerClient::PowerMode::DOZE_SUSPEND) {
-    return Error::BAD_PARAMETER;
-  }
-
-  if (!dozeSupported && (mode == IComposerClient::PowerMode::DOZE ||
-                         mode == IComposerClient::PowerMode::DOZE_SUSPEND)) {
-    return Error::UNSUPPORTED;
-  }
-
-  display_ptr->set_power_mode(mode);
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerFloatColor(Display display, Layer layer,
-                                IComposerClient::FloatColor color) {
-  return Error::NONE;
-}
-
-Error VrHwc::getRenderIntents(Display display, types::V1_1::ColorMode mode,
-                              std::vector<RenderIntent>* outIntents) {
-  return Error::NONE;
-}
-
-std::array<float, 16> VrHwc::getDataspaceSaturationMatrix(
-    types::V1_1::Dataspace dataspace) {
-  return {};
-}
-
-// composer::V2_3::ComposerHal
-Error VrHwc::getHdrCapabilities_2_3(Display /*display*/,
-                                    hidl_vec<Hdr>* /*outTypes*/,
-                                    float* outMaxLuminance,
-                                    float* outMaxAverageLuminance,
-                                    float* outMinLuminance) {
-  *outMaxLuminance = 0;
-  *outMaxAverageLuminance = 0;
-  *outMinLuminance = 0;
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerPerFrameMetadata_2_3(
-    Display display, Layer layer,
-    const std::vector<IComposerClient::PerFrameMetadata>& metadata) {
-  return Error::NONE;
-}
-
-Error VrHwc::getPerFrameMetadataKeys_2_3(
-    Display display,
-    std::vector<IComposerClient::PerFrameMetadataKey>* outKeys) {
-  return Error::NONE;
-}
-
-Error VrHwc::setColorMode_2_3(Display display, ColorMode mode,
-                              RenderIntent intent) {
-  std::lock_guard<std::mutex> guard(mutex_);
-  auto display_ptr = FindDisplay(display);
-  if (!display_ptr)
-    return Error::BAD_DISPLAY;
-
-  if (mode < ColorMode::NATIVE || mode > ColorMode::DISPLAY_P3)
-    return Error::BAD_PARAMETER;
-
-  display_ptr->set_color_mode(mode);
-  return Error::NONE;
-}
-
-Error VrHwc::getRenderIntents_2_3(Display display, ColorMode mode,
-                                  std::vector<RenderIntent>* outIntents) {
-  return Error::NONE;
-}
-
-Error VrHwc::getColorModes_2_3(Display display, hidl_vec<ColorMode>* outModes) {
-  return Error::NONE;
-}
-
-Error VrHwc::getClientTargetSupport_2_3(Display display, uint32_t width,
-                                        uint32_t height, PixelFormat format,
-                                        Dataspace dataspace) {
-  return Error::NONE;
-}
-
-Error VrHwc::getReadbackBufferAttributes_2_3(Display display,
-                                             PixelFormat* outFormat,
-                                             Dataspace* outDataspace) {
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayIdentificationData(Display display, uint8_t* outPort,
-                                          std::vector<uint8_t>* outData) {
-  int error = 0;
-  auto display_client = display::DisplayClient::Create(&error);
-  if (!display_client) {
-    ALOGE("Could not connect to display service : %s(%d)", strerror(error),
-          error);
-    return Error::BAD_CONFIG;
-  }
-  auto edid_data = display_client->GetConfigurationData(
-      display::ConfigFileType::kDeviceEdid);
-  auto display_identification_port =
-      display_client->GetDisplayIdentificationPort();
-  *outPort = display_identification_port.get();
-
-  std::copy(edid_data.get().begin(), edid_data.get().end(),
-            std::back_inserter(*outData));
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerColorTransform(Display display, Layer layer,
-                                    const float* matrix) {
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayedContentSamplingAttributes(
-    Display display, PixelFormat& format, Dataspace& dataspace,
-    hidl_bitfield<IComposerClient::FormatColorComponent>& componentMask) {
-  return Error::NONE;
-}
-
-Error VrHwc::setDisplayedContentSamplingEnabled(
-    Display display, IComposerClient::DisplayedContentSampling enable,
-    hidl_bitfield<IComposerClient::FormatColorComponent> componentMask,
-    uint64_t maxFrames) {
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayedContentSample(Display display, uint64_t maxFrames,
-                                       uint64_t timestamp, uint64_t& frameCount,
-                                       hidl_vec<uint64_t>& sampleComponent0,
-                                       hidl_vec<uint64_t>& sampleComponent1,
-                                       hidl_vec<uint64_t>& sampleComponent2,
-                                       hidl_vec<uint64_t>& sampleComponent3) {
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayCapabilities(
-    Display display,
-    std::vector<IComposerClient::DisplayCapability>* outCapabilities) {
-  return Error::NONE;
-}
-
-Error VrHwc::setLayerPerFrameMetadataBlobs(
-    Display display, Layer layer,
-    std::vector<IComposerClient::PerFrameMetadataBlob>& blobs) {
-  return Error::NONE;
-}
-
-Error VrHwc::getDisplayBrightnessSupport(Display display, bool* outSupport) {
-  return Error::NONE;
-}
-
-Error VrHwc::setDisplayBrightness(Display display, float brightness) {
-  return Error::NONE;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/impl/vr_hwc.h b/services/vr/hardware_composer/impl/vr_hwc.h
deleted file mode 100644
index 3e3a630..0000000
--- a/services/vr/hardware_composer/impl/vr_hwc.h
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * Copyright 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef ANDROID_DVR_HARDWARE_COMPOSER_IMPL_VR_HWC_H
-#define ANDROID_DVR_HARDWARE_COMPOSER_IMPL_VR_HWC_H
-
-#include <android-base/unique_fd.h>
-#include <android/frameworks/vr/composer/2.0/IVrComposerClient.h>
-#include <android/hardware/graphics/composer/2.3/IComposer.h>
-#include <composer-hal/2.3/ComposerHal.h>
-#include <private/dvr/vsync_service.h>
-#include <ui/Fence.h>
-#include <ui/GraphicBuffer.h>
-#include <utils/StrongPointer.h>
-
-#include <mutex>
-#include <unordered_map>
-
-using namespace android::frameworks::vr::composer::V2_0;
-using namespace android::hardware::graphics::common::V1_0;
-using namespace android::hardware::graphics::composer::V2_3;
-
-using android::hardware::hidl_bitfield;
-using android::hardware::hidl_handle;
-using android::hardware::hidl_string;
-using android::hardware::hidl_vec;
-using android::hardware::Return;
-using android::hardware::Void;
-using android::hardware::graphics::composer::V2_1::Config;
-using android::hardware::graphics::composer::V2_1::Display;
-using android::hardware::graphics::composer::V2_1::Error;
-using android::hardware::graphics::composer::V2_1::Layer;
-using android::hardware::graphics::composer::V2_3::IComposerClient;
-
-namespace android {
-
-class Fence;
-
-namespace dvr {
-
-class VrComposerClient;
-
-using android::hardware::graphics::composer::V2_3::hal::ComposerHal;
-
-namespace types = android::hardware::graphics::common;
-
-using types::V1_1::RenderIntent;
-using types::V1_2::ColorMode;
-using types::V1_2::Dataspace;
-using types::V1_2::Hdr;
-using types::V1_2::PixelFormat;
-
-class ComposerView {
- public:
-  struct ComposerLayer {
-    using Recti = hardware::graphics::composer::V2_3::IComposerClient::Rect;
-    using Rectf = hardware::graphics::composer::V2_3::IComposerClient::FRect;
-    using BlendMode =
-        hardware::graphics::composer::V2_3::IComposerClient::BlendMode;
-
-    Layer id;
-    sp<GraphicBuffer> buffer;
-    sp<Fence> fence;
-    Recti display_frame;
-    Rectf crop;
-    BlendMode blend_mode;
-    float alpha;
-    uint32_t type;
-    uint32_t app_id;
-    uint32_t z_order;
-    int32_t cursor_x;
-    int32_t cursor_y;
-    IComposerClient::Color color;
-    int32_t dataspace;
-    int32_t transform;
-    std::vector<hwc_rect_t> visible_regions;
-    std::vector<hwc_rect_t> damaged_regions;
-  };
-
-  struct Frame {
-    Display display_id;
-    // This is set to true to notify the upper layer that the display is
-    // being removed, or left false in the case of a normal frame. The upper
-    // layer tracks display IDs and will handle new ones showing up.
-    bool removed = false;
-    int32_t display_width;
-    int32_t display_height;
-    Config active_config;
-    ColorMode color_mode;
-    IComposerClient::PowerMode power_mode;
-    IComposerClient::Vsync vsync_enabled;
-    float color_transform[16];
-    int32_t color_transform_hint;
-    std::vector<ComposerLayer> layers;
-  };
-
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    // Returns a list of layers that need to be shown together. Layers are
-    // returned in z-order, with the lowest layer first.
-    virtual base::unique_fd OnNewFrame(const Frame& frame) = 0;
-  };
-
-  virtual ~ComposerView() {}
-
-  virtual void ForceDisplaysRefresh() = 0;
-  virtual void RegisterObserver(Observer* observer) = 0;
-  virtual void UnregisterObserver(Observer* observer) = 0;
-};
-
-struct HwcLayer {
-  using Composition =
-      hardware::graphics::composer::V2_3::IComposerClient::Composition;
-
-  explicit HwcLayer(Layer new_id) { info.id = new_id; }
-
-  void dumpDebugInfo(std::string* result) const;
-
-  Composition composition_type;
-  ComposerView::ComposerLayer info;
-  IVrComposerClient::BufferMetadata buffer_metadata;
-};
-
-class HwcDisplay {
- public:
-  HwcDisplay(int32_t width, int32_t height);
-  ~HwcDisplay();
-
-  int32_t width() const { return width_; }
-  int32_t height() const { return height_; }
-
-  HwcLayer* CreateLayer();
-  bool DestroyLayer(Layer id);
-  HwcLayer* GetLayer(Layer id);
-
-  bool SetClientTarget(const native_handle_t* handle, base::unique_fd fence);
-  void SetClientTargetMetadata(
-      const IVrComposerClient::BufferMetadata& metadata);
-
-  void GetChangedCompositionTypes(
-      std::vector<Layer>* layer_ids,
-      std::vector<IComposerClient::Composition>* composition);
-
-  Error GetFrame(std::vector<ComposerView::ComposerLayer>* out_frame);
-
-  std::vector<Layer> UpdateLastFrameAndGetLastFrameLayers();
-
-  Config active_config() const { return active_config_; }
-  void set_active_config(Config config) { active_config_ = config; }
-
-  ColorMode color_mode() const { return color_mode_; }
-  void set_color_mode(ColorMode mode) { color_mode_ = mode; }
-
-  IComposerClient::PowerMode power_mode() const { return power_mode_; }
-  void set_power_mode(IComposerClient::PowerMode mode) { power_mode_ = mode; }
-
-  bool vsync_enabled() const { return vsync_enabled_; }
-  void set_vsync_enabled(bool vsync) {vsync_enabled_ = vsync;}
-
-  const float* color_transform() const { return color_transform_; }
-  int32_t color_transform_hint() const { return color_transform_hint_; }
-  void SetColorTransform(const float* matrix, int32_t hint);
-
-  void dumpDebugInfo(std::string* result) const;
-
- private:
-  // The client target buffer and the associated fence.
-  sp<GraphicBuffer> buffer_;
-  IVrComposerClient::BufferMetadata buffer_metadata_;
-  sp<Fence> fence_;
-
-  // List of currently active layers.
-  std::vector<HwcLayer> layers_;
-
-  std::vector<Layer> last_frame_layers_ids_;
-
-  // Layer ID generator.
-  uint64_t layer_ids_ = 1;
-
-  int32_t width_;
-  int32_t height_;
-
-  Config active_config_;
-  ColorMode color_mode_;
-  IComposerClient::PowerMode power_mode_;
-  bool vsync_enabled_ = false;
-  float color_transform_[16];
-  int32_t color_transform_hint_;
-
-  HwcDisplay(const HwcDisplay&) = delete;
-  void operator=(const HwcDisplay&) = delete;
-};
-
-class VrHwc : public IComposer, public ComposerHal, public ComposerView {
- public:
-  VrHwc();
-  ~VrHwc() override;
-
-  Error setLayerInfo(Display display, Layer layer, uint32_t type,
-                     uint32_t appId);
-  Error setClientTargetMetadata(
-      Display display, const IVrComposerClient::BufferMetadata& metadata);
-  Error setLayerBufferMetadata(
-      Display display, Layer layer,
-      const IVrComposerClient::BufferMetadata& metadata);
-
-  // composer::V2_1::ComposerHal
-  bool hasCapability(hwc2_capability_t capability) override;
-
-  std::string dumpDebugInfo() override { return {}; }
-
-  void registerEventCallback(ComposerHal::EventCallback* callback) override;
-  void unregisterEventCallback() override;
-
-  uint32_t getMaxVirtualDisplayCount() override;
-  Error destroyVirtualDisplay(Display display) override;
-
-  Error createLayer(Display display, Layer* outLayer) override;
-  Error destroyLayer(Display display, Layer layer) override;
-
-  Error getActiveConfig(Display display, Config* outConfig) override;
-  Error getDisplayAttribute(Display display, Config config,
-                            IComposerClient::Attribute attribute,
-                            int32_t* outValue) override;
-  Error getDisplayConfigs(Display display, hidl_vec<Config>* outConfigs) override;
-  Error getDisplayName(Display display, hidl_string* outName) override;
-  Error getDisplayType(Display display,
-                       IComposerClient::DisplayType* outType) override;
-  Error getDozeSupport(Display display, bool* outSupport) override;
-
-  Error setActiveConfig(Display display, Config config) override;
-  Error setVsyncEnabled(Display display, IComposerClient::Vsync enabled) override;
-
-  Error setColorTransform(Display display, const float* matrix,
-                          int32_t hint) override;
-  Error setClientTarget(Display display, buffer_handle_t target,
-                        int32_t acquireFence, int32_t dataspace,
-                        const std::vector<hwc_rect_t>& damage) override;
-  Error setOutputBuffer(Display display, buffer_handle_t buffer,
-                        int32_t releaseFence) override;
-  Error validateDisplay(
-      Display display, std::vector<Layer>* outChangedLayers,
-      std::vector<IComposerClient::Composition>* outCompositionTypes,
-      uint32_t* outDisplayRequestMask, std::vector<Layer>* outRequestedLayers,
-      std::vector<uint32_t>* outRequestMasks) override;
-  Error acceptDisplayChanges(Display display) override;
-  Error presentDisplay(Display display, int32_t* outPresentFence,
-                       std::vector<Layer>* outLayers,
-                       std::vector<int32_t>* outReleaseFences) override;
-
-  Error setLayerCursorPosition(Display display, Layer layer, int32_t x,
-                               int32_t y) override;
-  Error setLayerBuffer(Display display, Layer layer, buffer_handle_t buffer,
-                       int32_t acquireFence) override;
-  Error setLayerSurfaceDamage(Display display, Layer layer,
-                              const std::vector<hwc_rect_t>& damage) override;
-  Error setLayerBlendMode(Display display, Layer layer, int32_t mode) override;
-  Error setLayerColor(Display display, Layer layer,
-                      IComposerClient::Color color) override;
-  Error setLayerCompositionType(Display display, Layer layer,
-                                int32_t type) override;
-  Error setLayerDataspace(Display display, Layer layer,
-                          int32_t dataspace) override;
-  Error setLayerDisplayFrame(Display display, Layer layer,
-                             const hwc_rect_t& frame) override;
-  Error setLayerPlaneAlpha(Display display, Layer layer, float alpha) override;
-  Error setLayerSidebandStream(Display display, Layer layer,
-                               buffer_handle_t stream) override;
-  Error setLayerSourceCrop(Display display, Layer layer,
-                           const hwc_frect_t& crop) override;
-  Error setLayerTransform(Display display, Layer layer,
-                          int32_t transform) override;
-  Error setLayerVisibleRegion(Display display, Layer layer,
-                              const std::vector<hwc_rect_t>& visible) override;
-  Error setLayerZOrder(Display display, Layer layer, uint32_t z) override;
-
-  // composer::V2_2::ComposerHal
-  Error setReadbackBuffer(Display display, const native_handle_t* bufferHandle,
-                          android::base::unique_fd fenceFd) override;
-  Error getReadbackBufferFence(Display display,
-                               android::base::unique_fd* outFenceFd) override;
-  Error createVirtualDisplay_2_2(uint32_t width, uint32_t height,
-                                 types::V1_1::PixelFormat* format,
-                                 Display* outDisplay) override;
-  Error setPowerMode_2_2(Display display,
-                         IComposerClient::PowerMode mode) override;
-  Error setLayerFloatColor(Display display, Layer layer,
-                           IComposerClient::FloatColor color) override;
-  Error getRenderIntents(Display display, types::V1_1::ColorMode mode,
-                         std::vector<RenderIntent>* outIntents) override;
-  std::array<float, 16> getDataspaceSaturationMatrix(
-      types::V1_1::Dataspace dataspace) override;
-
-  // composer::V2_3::ComposerHal
-  Error getHdrCapabilities_2_3(Display display, hidl_vec<Hdr>* outTypes,
-                               float* outMaxLuminance,
-                               float* outMaxAverageLuminance,
-                               float* outMinLuminance) override;
-  Error setLayerPerFrameMetadata_2_3(
-      Display display, Layer layer,
-      const std::vector<IComposerClient::PerFrameMetadata>& metadata) override;
-  Error getPerFrameMetadataKeys_2_3(
-      Display display,
-      std::vector<IComposerClient::PerFrameMetadataKey>* outKeys) override;
-  Error setColorMode_2_3(Display display, ColorMode mode,
-                         RenderIntent intent) override;
-  Error getRenderIntents_2_3(Display display, ColorMode mode,
-                             std::vector<RenderIntent>* outIntents) override;
-  Error getColorModes_2_3(Display display,
-                          hidl_vec<ColorMode>* outModes) override;
-  Error getClientTargetSupport_2_3(Display display, uint32_t width,
-                                   uint32_t height, PixelFormat format,
-                                   Dataspace dataspace) override;
-  Error getReadbackBufferAttributes_2_3(Display display, PixelFormat* outFormat,
-                                        Dataspace* outDataspace) override;
-  Error getDisplayIdentificationData(Display display, uint8_t* outPort,
-                                     std::vector<uint8_t>* outData) override;
-  Error setLayerColorTransform(Display display, Layer layer,
-                               const float* matrix) override;
-  Error getDisplayedContentSamplingAttributes(
-      Display display, PixelFormat& format, Dataspace& dataspace,
-      hidl_bitfield<IComposerClient::FormatColorComponent>& componentMask)
-      override;
-  Error setDisplayedContentSamplingEnabled(
-      Display display, IComposerClient::DisplayedContentSampling enable,
-      hidl_bitfield<IComposerClient::FormatColorComponent> componentMask,
-      uint64_t maxFrames) override;
-  Error getDisplayedContentSample(
-      Display display, uint64_t maxFrames, uint64_t timestamp,
-      uint64_t& frameCount, hidl_vec<uint64_t>& sampleComponent0,
-      hidl_vec<uint64_t>& sampleComponent1,
-      hidl_vec<uint64_t>& sampleComponent2,
-      hidl_vec<uint64_t>& sampleComponent3) override;
-  Error getDisplayCapabilities(Display display,
-                               std::vector<IComposerClient::DisplayCapability>*
-                                   outCapabilities) override;
-  Error setLayerPerFrameMetadataBlobs(
-      Display display, Layer layer,
-      std::vector<IComposerClient::PerFrameMetadataBlob>& blobs) override;
-  Error getDisplayBrightnessSupport(Display display, bool* outSupport) override;
-  Error setDisplayBrightness(Display display, float brightness) override;
-
-  // IComposer:
-  Return<void> getCapabilities(getCapabilities_cb hidl_cb) override;
-  Return<void> dumpDebugInfo(dumpDebugInfo_cb hidl_cb) override;
-  Return<void> createClient(createClient_cb hidl_cb) override;
-  Return<void> createClient_2_3(
-      IComposer::createClient_2_3_cb hidl_cb) override;
-
-  // ComposerView:
-  void ForceDisplaysRefresh() override;
-  void RegisterObserver(Observer* observer) override;
-  void UnregisterObserver(Observer* observer) override;
-
-  Return<void> debug(const hidl_handle& fd,
-                     const hidl_vec<hidl_string>& args) override;
-
- private:
-  class VsyncCallback : public BnVsyncCallback {
-   public:
-    status_t onVsync(int64_t vsync_timestamp) override;
-    void SetEventCallback(EventCallback* callback);
-   private:
-    std::mutex mutex_;
-    EventCallback* callback_;
-  };
-
-  HwcDisplay* FindDisplay(Display display);
-
-  // Re-evaluate whether or not we should start making onVsync() callbacks to
-  // the client. We need enableCallback(true) to have been called, and
-  // setVsyncEnabled() to have been called for the primary display. The caller
-  // must have mutex_ locked already.
-  void UpdateVsyncCallbackEnabledLocked();
-
-  wp<VrComposerClient> client_;
-
-  // Guard access to internal state from binder threads.
-  std::mutex mutex_;
-
-  std::unordered_map<Display, std::unique_ptr<HwcDisplay>> displays_;
-  Display display_count_ = 2;
-
-  EventCallback* event_callback_ = nullptr;
-  Observer* observer_ = nullptr;
-
-  sp<VsyncCallback> vsync_callback_;
-
-  VrHwc(const VrHwc&) = delete;
-  void operator=(const VrHwc&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  // ANDROID_DVR_HARDWARE_COMPOSER_IMPL_VR_HWC_H
diff --git a/services/vr/hardware_composer/tests/vr_composer_test.cpp b/services/vr/hardware_composer/tests/vr_composer_test.cpp
deleted file mode 100644
index 2e70928..0000000
--- a/services/vr/hardware_composer/tests/vr_composer_test.cpp
+++ /dev/null
@@ -1,172 +0,0 @@
-#include <android/dvr/BnVrComposerCallback.h>
-#include <binder/IServiceManager.h>
-#include <gtest/gtest.h>
-#include <sys/eventfd.h>
-#include <vr_composer.h>
-
-namespace android {
-namespace dvr {
-namespace {
-
-const char kVrDisplayName[] = "VrDisplay_Test";
-
-class TestComposerView : public ComposerView {
- public:
-  TestComposerView() {}
-  ~TestComposerView() override = default;
-
-  size_t display_refresh_count() const { return display_refresh_count_; }
-
-  void ForceDisplaysRefresh() override { display_refresh_count_++; }
-  void RegisterObserver(Observer* observer) override {}
-  void UnregisterObserver(Observer* observer) override {}
-
-  TestComposerView(const TestComposerView&) = delete;
-  void operator=(const TestComposerView&) = delete;
-
- private:
-  size_t display_refresh_count_ = 0;
-};
-
-class TestComposerCallback : public BnVrComposerCallback {
- public:
-  TestComposerCallback() {}
-  ~TestComposerCallback() override = default;
-
-  ComposerView::Frame last_frame() const { return last_frame_; }
-
-  binder::Status onNewFrame(
-      const ParcelableComposerFrame& frame,
-      ParcelableUniqueFd* /* fence */) override {
-    last_frame_ = frame.frame();
-    return binder::Status::ok();
-  }
-
- private:
-  ComposerView::Frame last_frame_;
-
-  TestComposerCallback(const TestComposerCallback&) = delete;
-  void operator=(const TestComposerCallback&) = delete;
-};
-
-class TestComposerCallbackWithFence : public TestComposerCallback {
- public:
-  ~TestComposerCallbackWithFence() override = default;
-
-  binder::Status onNewFrame(
-      const ParcelableComposerFrame& frame,
-      ParcelableUniqueFd* fence) override {
-    binder::Status status = TestComposerCallback::onNewFrame(frame, fence);
-
-    base::unique_fd fd(eventfd(0, 0));
-    EXPECT_LE(0, fd.get());
-    fence->set_fence(fd);
-
-    return status;
-  }
-};
-
-sp<GraphicBuffer> CreateBuffer() {
-  return new GraphicBuffer(600, 400, PIXEL_FORMAT_RGBA_8888,
-                           GraphicBuffer::USAGE_HW_TEXTURE);
-}
-
-}  // namespace
-
-class VrComposerTest : public testing::Test {
- public:
-  VrComposerTest() : composer_(new VrComposer(&composer_view_)) {}
-  ~VrComposerTest() override = default;
-
-  sp<IVrComposer> GetComposerProxy() const {
-    sp<IServiceManager> sm(defaultServiceManager());
-    return interface_cast<IVrComposer>(sm->getService(String16(kVrDisplayName)));
-  }
-
-  void SetUp() override {
-    sp<IServiceManager> sm(defaultServiceManager());
-    EXPECT_EQ(OK,
-              sm->addService(String16(kVrDisplayName), composer_, false));
-  }
-
- protected:
-  TestComposerView composer_view_;
-  sp<VrComposer> composer_;
-
-  VrComposerTest(const VrComposerTest&) = delete;
-  void operator=(const VrComposerTest&) = delete;
-};
-
-TEST_F(VrComposerTest, TestWithoutObserver) {
-  sp<IVrComposer> composer = GetComposerProxy();
-  ComposerView::Frame frame;
-
-  base::unique_fd fence = composer_->OnNewFrame(frame);
-  ASSERT_EQ(-1, fence.get());
-}
-
-TEST_F(VrComposerTest, TestWithObserver) {
-  sp<IVrComposer> composer = GetComposerProxy();
-  sp<TestComposerCallback> callback = new TestComposerCallback();
-  ASSERT_EQ(0, composer_view_.display_refresh_count());
-  ASSERT_TRUE(composer->registerObserver(callback).isOk());
-  ASSERT_EQ(1, composer_view_.display_refresh_count());
-
-  ComposerView::Frame frame;
-  base::unique_fd fence = composer_->OnNewFrame(frame);
-  ASSERT_EQ(-1, fence.get());
-}
-
-TEST_F(VrComposerTest, TestWithOneLayer) {
-  sp<IVrComposer> composer = GetComposerProxy();
-  sp<TestComposerCallback> callback = new TestComposerCallbackWithFence();
-  ASSERT_TRUE(composer->registerObserver(callback).isOk());
-
-  ComposerView::Frame frame;
-  frame.display_id = 1;
-  frame.removed = false;
-  frame.display_width = 600;
-  frame.display_height = 400;
-  frame.layers.push_back(ComposerView::ComposerLayer{
-    .id = 1,
-    .buffer = CreateBuffer(),
-    .fence = new Fence(eventfd(0, 0)),
-    .display_frame = {0, 0, 600, 400},
-    .crop = {0.0f, 0.0f, 600.0f, 400.0f},
-    .blend_mode = IComposerClient::BlendMode::NONE,
-    .alpha = 1.0f,
-    .type = 1,
-    .app_id = 1,
-  });
-  base::unique_fd fence = composer_->OnNewFrame(frame);
-  ASSERT_LE(0, fence.get());
-
-  ComposerView::Frame received_frame = callback->last_frame();
-  ASSERT_EQ(frame.display_id, received_frame.display_id);
-  ASSERT_EQ(frame.display_width, received_frame.display_width);
-  ASSERT_EQ(frame.display_height, received_frame.display_height);
-  ASSERT_EQ(frame.removed, received_frame.removed);
-  ASSERT_EQ(1u, received_frame.layers.size());
-  ASSERT_EQ(frame.layers[0].id, received_frame.layers[0].id);
-  ASSERT_NE(nullptr, received_frame.layers[0].buffer.get());
-  ASSERT_TRUE(received_frame.layers[0].fence->isValid());
-  ASSERT_EQ(frame.layers[0].display_frame.left,
-            received_frame.layers[0].display_frame.left);
-  ASSERT_EQ(frame.layers[0].display_frame.top,
-            received_frame.layers[0].display_frame.top);
-  ASSERT_EQ(frame.layers[0].display_frame.right,
-            received_frame.layers[0].display_frame.right);
-  ASSERT_EQ(frame.layers[0].display_frame.bottom,
-            received_frame.layers[0].display_frame.bottom);
-  ASSERT_EQ(frame.layers[0].crop.left, received_frame.layers[0].crop.left);
-  ASSERT_EQ(frame.layers[0].crop.top, received_frame.layers[0].crop.top);
-  ASSERT_EQ(frame.layers[0].crop.right, received_frame.layers[0].crop.right);
-  ASSERT_EQ(frame.layers[0].crop.bottom, received_frame.layers[0].crop.bottom);
-  ASSERT_EQ(frame.layers[0].blend_mode, received_frame.layers[0].blend_mode);
-  ASSERT_EQ(frame.layers[0].alpha, received_frame.layers[0].alpha);
-  ASSERT_EQ(frame.layers[0].type, received_frame.layers[0].type);
-  ASSERT_EQ(frame.layers[0].app_id, received_frame.layers[0].app_id);
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/vr_composer.cpp b/services/vr/hardware_composer/vr_composer.cpp
deleted file mode 100644
index d93f370..0000000
--- a/services/vr/hardware_composer/vr_composer.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-#include "vr_composer.h"
-
-#include <binder/IPCThreadState.h>
-#include <binder/PermissionCache.h>
-
-namespace android {
-namespace dvr {
-namespace {
-
-bool CheckPermission() {
-  const android::IPCThreadState* ipc = android::IPCThreadState::self();
-  const pid_t pid = ipc->getCallingPid();
-  const uid_t uid = ipc->getCallingUid();
-  const bool permission = PermissionCache::checkPermission(
-      String16("android.permission.RESTRICTED_VR_ACCESS"), pid, uid);
-  if (!permission)
-    ALOGE("permission denied to pid=%d uid=%u", pid, uid);
-
-  return permission;
-}
-
-}  // namespace
-
-VrComposer::VrComposer(ComposerView* composer_view)
-  : composer_view_(composer_view) {
-  composer_view_->RegisterObserver(this);
-}
-
-VrComposer::~VrComposer() {
-  composer_view_->UnregisterObserver(this);
-}
-
-binder::Status VrComposer::registerObserver(
-    const sp<IVrComposerCallback>& callback) {
-  {
-    std::lock_guard<std::mutex> guard(mutex_);
-
-    if (!CheckPermission())
-      return binder::Status::fromStatusT(PERMISSION_DENIED);
-
-    if (callback_.get()) {
-      ALOGE("Failed to register callback, already registered");
-      return binder::Status::fromStatusT(ALREADY_EXISTS);
-    }
-
-    callback_ = callback;
-    IInterface::asBinder(callback_)->linkToDeath(this);
-  }
-
-  // Don't take the lock to force display refresh otherwise it could end in a
-  // deadlock since HWC calls this with new frames and it has a lock of its own
-  // to serialize access to the display information.
-  composer_view_->ForceDisplaysRefresh();
-  return binder::Status::ok();
-}
-
-binder::Status VrComposer::clearObserver() {
-  std::lock_guard<std::mutex> guard(mutex_);
-  callback_ = nullptr;
-  return binder::Status::ok();
-}
-
-base::unique_fd VrComposer::OnNewFrame(const ComposerView::Frame& frame) {
-  std::lock_guard<std::mutex> guard(mutex_);
-
-  if (!callback_.get())
-    return base::unique_fd();
-
-  ParcelableComposerFrame parcelable_frame(frame);
-  ParcelableUniqueFd fence;
-  binder::Status ret = callback_->onNewFrame(parcelable_frame, &fence);
-  if (!ret.isOk())
-    ALOGE("Failed to send new frame: %s", ret.toString8().string());
-
-  return fence.fence();
-}
-
-void VrComposer::binderDied(const wp<IBinder>& /* who */) {
-  std::lock_guard<std::mutex> guard(mutex_);
-
-  callback_ = nullptr;
-}
-
-}  // namespace dvr
-}  // namespace android
diff --git a/services/vr/hardware_composer/vr_composer.h b/services/vr/hardware_composer/vr_composer.h
deleted file mode 100644
index 1273352..0000000
--- a/services/vr/hardware_composer/vr_composer.h
+++ /dev/null
@@ -1,52 +0,0 @@
-#ifndef ANDROID_DVR_HARDWARE_COMPOSER_VR_COMPOSER_H
-#define ANDROID_DVR_HARDWARE_COMPOSER_VR_COMPOSER_H
-
-#include <android/dvr/BnVrComposer.h>
-#include <impl/vr_hwc.h>
-
-namespace android {
-namespace dvr {
-
-class VrComposerCallback;
-
-// Implementation of the IVrComposer service used to notify VR Window Manager
-// when SurfaceFlinger presents 2D UI changes.
-//
-// VR HWC updates the presented frame via the ComposerView::Observer interface.
-// On notification |callback_| is called to update VR Window Manager.
-// NOTE: If VR Window Manager isn't connected, the notification is a no-op.
-class VrComposer
-    : public BnVrComposer,
-      public ComposerView::Observer,
-      public IBinder::DeathRecipient {
- public:
-  explicit VrComposer(ComposerView* composer_view);
-  ~VrComposer() override;
-
-  // BnVrComposer:
-  binder::Status registerObserver(
-      const sp<IVrComposerCallback>& callback) override;
-
-  binder::Status clearObserver() override;
-
-  // ComposerView::Observer:
-  base::unique_fd OnNewFrame(const ComposerView::Frame& frame) override;
-
- private:
-  // IBinder::DeathRecipient:
-  void binderDied(const wp<IBinder>& who) override;
-
-  std::mutex mutex_;
-
-  sp<IVrComposerCallback> callback_;
-
-  ComposerView* composer_view_;  // Not owned.
-
-  VrComposer(const VrComposer&) = delete;
-  void operator=(const VrComposer&) = delete;
-};
-
-}  // namespace dvr
-}  // namespace android
-
-#endif  //  ANDROID_DVR_HARDWARE_COMPOSER_VR_COMPOSER_H
diff --git a/vulkan/libvulkan/api_gen.cpp b/vulkan/libvulkan/api_gen.cpp
index df70bf4..a9706bc 100644
--- a/vulkan/libvulkan/api_gen.cpp
+++ b/vulkan/libvulkan/api_gen.cpp
@@ -682,6 +682,7 @@
         "vkGetPhysicalDeviceMemoryProperties2",
         "vkGetPhysicalDeviceMemoryProperties2KHR",
         "vkGetPhysicalDeviceMultisamplePropertiesEXT",
+        "vkGetPhysicalDeviceOpticalFlowImageFormatsNV",
         "vkGetPhysicalDevicePresentRectanglesKHR",
         "vkGetPhysicalDeviceProperties",
         "vkGetPhysicalDeviceProperties2",
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index 4927150..a99355f 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -1027,8 +1027,11 @@
     }
 }
 
-bool GetAndroidNativeBufferSpecVersion9Support(
-    VkPhysicalDevice physicalDevice) {
+VkResult GetAndroidNativeBufferSpecVersion9Support(
+    VkPhysicalDevice physicalDevice,
+    bool& support) {
+    support = false;
+
     const InstanceData& data = GetData(physicalDevice);
 
     // Call to get propertyCount
@@ -1038,6 +1041,10 @@
         physicalDevice, nullptr, &propertyCount, nullptr);
     ATRACE_END();
 
+    if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
+        return result;
+    }
+
     // Call to enumerate properties
     std::vector<VkExtensionProperties> properties(propertyCount);
     ATRACE_BEGIN("driver.EnumerateDeviceExtensionProperties");
@@ -1045,6 +1052,10 @@
         physicalDevice, nullptr, &propertyCount, properties.data());
     ATRACE_END();
 
+    if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
+        return result;
+    }
+
     for (uint32_t i = 0; i < propertyCount; i++) {
         auto& prop = properties[i];
 
@@ -1053,11 +1064,12 @@
             continue;
 
         if (prop.specVersion >= 9) {
-            return true;
+            support = true;
+            return result;
         }
     }
 
-    return false;
+    return result;
 }
 
 VkResult EnumerateDeviceExtensionProperties(
@@ -1101,18 +1113,30 @@
     swapchainCompFeats.sType =
         VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_COMPRESSION_CONTROL_SWAPCHAIN_FEATURES_EXT;
     swapchainCompFeats.pNext = nullptr;
+    swapchainCompFeats.imageCompressionControlSwapchain = false;
     VkPhysicalDeviceImageCompressionControlFeaturesEXT imageCompFeats = {};
     imageCompFeats.sType =
         VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_COMPRESSION_CONTROL_FEATURES_EXT;
     imageCompFeats.pNext = &swapchainCompFeats;
+    imageCompFeats.imageCompressionControl = false;
 
     VkPhysicalDeviceFeatures2 feats2 = {};
     feats2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
     feats2.pNext = &imageCompFeats;
 
-    GetPhysicalDeviceFeatures2(physicalDevice, &feats2);
+    const auto& driver = GetData(physicalDevice).driver;
+    if (driver.GetPhysicalDeviceFeatures2 ||
+        driver.GetPhysicalDeviceFeatures2KHR) {
+        GetPhysicalDeviceFeatures2(physicalDevice, &feats2);
+    }
 
-    bool anb9 = GetAndroidNativeBufferSpecVersion9Support(physicalDevice);
+    bool anb9 = false;
+    VkResult result =
+        GetAndroidNativeBufferSpecVersion9Support(physicalDevice, anb9);
+
+    if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
+        return result;
+    }
 
     if (anb9 && imageCompFeats.imageCompressionControl) {
         loader_extensions.push_back(
@@ -1142,7 +1166,7 @@
     }
 
     ATRACE_BEGIN("driver.EnumerateDeviceExtensionProperties");
-    VkResult result = data.driver.EnumerateDeviceExtensionProperties(
+    result = data.driver.EnumerateDeviceExtensionProperties(
         physicalDevice, pLayerName, pPropertyCount, pProperties);
     ATRACE_END();
 
@@ -1532,6 +1556,11 @@
             } break;
 
             case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_COMPRESSION_CONTROL_SWAPCHAIN_FEATURES_EXT: {
+                VkPhysicalDeviceImageCompressionControlSwapchainFeaturesEXT*
+                    compressionFeat = reinterpret_cast<
+                        VkPhysicalDeviceImageCompressionControlSwapchainFeaturesEXT*>(
+                        pFeats);
+                compressionFeat->imageCompressionControlSwapchain = false;
                 imageCompressionControlSwapchainInChain = true;
             } break;
 
@@ -1551,6 +1580,7 @@
         imageCompFeats.sType =
             VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_COMPRESSION_CONTROL_FEATURES_EXT;
         imageCompFeats.pNext = nullptr;
+        imageCompFeats.imageCompressionControl = false;
 
         VkPhysicalDeviceFeatures2 feats2 = {};
         feats2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index 83bc655..2e22c36 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -715,6 +715,17 @@
     capabilities->minImageExtent = VkExtent2D{1, 1};
     capabilities->maxImageExtent = VkExtent2D{4096, 4096};
 
+    if (capabilities->maxImageExtent.height <
+        capabilities->currentExtent.height) {
+        capabilities->maxImageExtent.height =
+            capabilities->currentExtent.height;
+    }
+
+    if (capabilities->maxImageExtent.width <
+        capabilities->currentExtent.width) {
+        capabilities->maxImageExtent.width = capabilities->currentExtent.width;
+    }
+
     capabilities->maxImageArrayLayers = 1;
 
     capabilities->supportedTransforms = kSupportedTransforms;
@@ -939,27 +950,36 @@
         return GetPhysicalDeviceSurfaceFormatsKHR(physicalDevice,
                                                   pSurfaceInfo->surface,
                                                   pSurfaceFormatCount, nullptr);
-    } else {
-        // temp vector for forwarding; we'll marshal it into the pSurfaceFormats
-        // after the call.
-        std::vector<VkSurfaceFormatKHR> surface_formats(*pSurfaceFormatCount);
-        VkResult result = GetPhysicalDeviceSurfaceFormatsKHR(
-            physicalDevice, pSurfaceInfo->surface, pSurfaceFormatCount,
-            surface_formats.data());
+    }
 
-        if (result == VK_SUCCESS || result == VK_INCOMPLETE) {
-            const auto& driver = GetData(physicalDevice).driver;
+    // temp vector for forwarding; we'll marshal it into the pSurfaceFormats
+    // after the call.
+    std::vector<VkSurfaceFormatKHR> surface_formats(*pSurfaceFormatCount);
+    VkResult result = GetPhysicalDeviceSurfaceFormatsKHR(
+        physicalDevice, pSurfaceInfo->surface, pSurfaceFormatCount,
+        surface_formats.data());
 
-            // marshal results individually due to stride difference.
-            uint32_t formats_to_marshal = *pSurfaceFormatCount;
-            for (uint32_t i = 0u; i < formats_to_marshal; i++) {
-                pSurfaceFormats[i].surfaceFormat = surface_formats[i];
+    if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
+        return result;
+    }
 
-                // Query the compression properties for the surface format
-                if (pSurfaceFormats[i].pNext) {
+    const auto& driver = GetData(physicalDevice).driver;
+
+    // marshal results individually due to stride difference.
+    uint32_t formats_to_marshal = *pSurfaceFormatCount;
+    for (uint32_t i = 0u; i < formats_to_marshal; i++) {
+        pSurfaceFormats[i].surfaceFormat = surface_formats[i];
+
+        // Query the compression properties for the surface format
+        VkSurfaceFormat2KHR* pSurfaceFormat = &pSurfaceFormats[i];
+        while (pSurfaceFormat->pNext) {
+            pSurfaceFormat =
+                reinterpret_cast<VkSurfaceFormat2KHR*>(pSurfaceFormat->pNext);
+            switch (pSurfaceFormat->sType) {
+                case VK_STRUCTURE_TYPE_IMAGE_COMPRESSION_PROPERTIES_EXT: {
                     VkImageCompressionPropertiesEXT* surfaceCompressionProps =
                         reinterpret_cast<VkImageCompressionPropertiesEXT*>(
-                            pSurfaceFormats[i].pNext);
+                            pSurfaceFormat);
 
                     if (surfaceCompressionProps &&
                         driver.GetPhysicalDeviceImageFormatProperties2KHR) {
@@ -1001,12 +1021,16 @@
                             return compressionRes;
                         }
                     }
-                }
+                } break;
+
+                default:
+                    // Ignore all other extension structs
+                    break;
             }
         }
-
-        return result;
     }
+
+    return result;
 }
 
 VKAPI_ATTR