diff --git a/Android.bp b/Android.bp
index 3992f82..7f1ef67 100644
--- a/Android.bp
+++ b/Android.bp
@@ -36,6 +36,14 @@
     ],
 }
 
+cc_library_headers {
+    name: "native_headers",
+    host_supported: true,
+    export_include_dirs: [
+        "include/",
+    ],
+}
+
 ndk_headers {
     name: "libandroid_headers",
     from: "include/android",
diff --git a/include/android/input.h b/include/android/input.h
index a45f065..9a0eb4d 100644
--- a/include/android/input.h
+++ b/include/android/input.h
@@ -781,6 +781,8 @@
      *
      * These values are relative to the state from the last event, not accumulated, so developers
      * should make sure to process this axis value for all batched historical events.
+     *
+     * This axis is only set on the first pointer in a motion event.
      */
     AMOTION_EVENT_AXIS_GESTURE_X_OFFSET = 48,
     /**
@@ -797,6 +799,8 @@
      *
      * These values are relative to the state from the last event, not accumulated, so developers
      * should make sure to process this axis value for all batched historical events.
+     *
+     * This axis is only set on the first pointer in a motion event.
      */
     AMOTION_EVENT_AXIS_GESTURE_SCROLL_X_DISTANCE = 50,
     /**
@@ -815,16 +819,29 @@
      *
      * These values are relative to the state from the last event, not accumulated, so developers
      * should make sure to process this axis value for all batched historical events.
+     *
+     * This axis is only set on the first pointer in a motion event.
      */
     AMOTION_EVENT_AXIS_GESTURE_PINCH_SCALE_FACTOR = 52,
 
     /**
+     * Axis constant: the number of fingers being used in a multi-finger swipe gesture.
+     *
+     * - For a touch pad, reports the number of fingers being used in a multi-finger swipe gesture
+     *   (with CLASSIFICATION_MULTI_FINGER_SWIPE).
+     *
+     * Since CLASSIFICATION_MULTI_FINGER_SWIPE is a hidden API, so is this axis. It is only set on
+     * the first pointer in a motion event.
+     */
+    AMOTION_EVENT_AXIS_GESTURE_SWIPE_FINGER_COUNT = 53,
+
+    /**
      * Note: This is not an "Axis constant". It does not represent any axis, nor should it be used
      * to represent any axis. It is a constant holding the value of the largest defined axis value,
      * to make some computations (like iterating through all possible axes) cleaner.
      * Please update the value accordingly if you add a new axis.
      */
-    AMOTION_EVENT_MAXIMUM_VALID_AXIS_VALUE = AMOTION_EVENT_AXIS_GESTURE_PINCH_SCALE_FACTOR,
+    AMOTION_EVENT_MAXIMUM_VALID_AXIS_VALUE = AMOTION_EVENT_AXIS_GESTURE_SWIPE_FINGER_COUNT,
 
     // NOTE: If you add a new axis here you must also add it to several other files.
     //       Refer to frameworks/base/core/java/android/view/MotionEvent.java for the full list.
diff --git a/include/input/EventBuilders.h b/include/input/EventBuilders.h
new file mode 100644
index 0000000..09438e9
--- /dev/null
+++ b/include/input/EventBuilders.h
@@ -0,0 +1,366 @@
+/*
+ * Copyright 2023 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 <NotifyArgs.h>
+#include <android/input.h>
+#include <attestation/HmacKeyManager.h>
+#include <input/Input.h>
+#include <vector>
+
+namespace android {
+
+// An arbitrary device id.
+static constexpr uint32_t DEFAULT_DEVICE_ID = 1;
+
+// The default policy flags to use for event injection by tests.
+static constexpr uint32_t DEFAULT_POLICY_FLAGS = POLICY_FLAG_FILTERED | POLICY_FLAG_PASS_TO_USER;
+
+class PointerBuilder {
+public:
+    PointerBuilder(int32_t id, ToolType toolType) {
+        mProperties.clear();
+        mProperties.id = id;
+        mProperties.toolType = toolType;
+        mCoords.clear();
+    }
+
+    PointerBuilder& x(float x) { return axis(AMOTION_EVENT_AXIS_X, x); }
+
+    PointerBuilder& y(float y) { return axis(AMOTION_EVENT_AXIS_Y, y); }
+
+    PointerBuilder& axis(int32_t axis, float value) {
+        mCoords.setAxisValue(axis, value);
+        return *this;
+    }
+
+    PointerProperties buildProperties() const { return mProperties; }
+
+    PointerCoords buildCoords() const { return mCoords; }
+
+private:
+    PointerProperties mProperties;
+    PointerCoords mCoords;
+};
+
+class MotionEventBuilder {
+public:
+    MotionEventBuilder(int32_t action, int32_t source) {
+        mAction = action;
+        mSource = source;
+        mEventTime = systemTime(SYSTEM_TIME_MONOTONIC);
+        mDownTime = mEventTime;
+    }
+
+    MotionEventBuilder& deviceId(int32_t deviceId) {
+        mDeviceId = deviceId;
+        return *this;
+    }
+
+    MotionEventBuilder& downTime(nsecs_t downTime) {
+        mDownTime = downTime;
+        return *this;
+    }
+
+    MotionEventBuilder& eventTime(nsecs_t eventTime) {
+        mEventTime = eventTime;
+        return *this;
+    }
+
+    MotionEventBuilder& displayId(int32_t displayId) {
+        mDisplayId = displayId;
+        return *this;
+    }
+
+    MotionEventBuilder& actionButton(int32_t actionButton) {
+        mActionButton = actionButton;
+        return *this;
+    }
+
+    MotionEventBuilder& buttonState(int32_t buttonState) {
+        mButtonState = buttonState;
+        return *this;
+    }
+
+    MotionEventBuilder& rawXCursorPosition(float rawXCursorPosition) {
+        mRawXCursorPosition = rawXCursorPosition;
+        return *this;
+    }
+
+    MotionEventBuilder& rawYCursorPosition(float rawYCursorPosition) {
+        mRawYCursorPosition = rawYCursorPosition;
+        return *this;
+    }
+
+    MotionEventBuilder& pointer(PointerBuilder pointer) {
+        mPointers.push_back(pointer);
+        return *this;
+    }
+
+    MotionEventBuilder& addFlag(uint32_t flags) {
+        mFlags |= flags;
+        return *this;
+    }
+
+    MotionEvent build() {
+        std::vector<PointerProperties> pointerProperties;
+        std::vector<PointerCoords> pointerCoords;
+        for (const PointerBuilder& pointer : mPointers) {
+            pointerProperties.push_back(pointer.buildProperties());
+            pointerCoords.push_back(pointer.buildCoords());
+        }
+
+        // Set mouse cursor position for the most common cases to avoid boilerplate.
+        if (mSource == AINPUT_SOURCE_MOUSE &&
+            !MotionEvent::isValidCursorPosition(mRawXCursorPosition, mRawYCursorPosition)) {
+            mRawXCursorPosition = pointerCoords[0].getX();
+            mRawYCursorPosition = pointerCoords[0].getY();
+        }
+
+        MotionEvent event;
+        static const ui::Transform kIdentityTransform;
+        event.initialize(InputEvent::nextId(), mDeviceId, mSource, mDisplayId, INVALID_HMAC,
+                         mAction, mActionButton, mFlags, /*edgeFlags=*/0, AMETA_NONE, mButtonState,
+                         MotionClassification::NONE, kIdentityTransform,
+                         /*xPrecision=*/0, /*yPrecision=*/0, mRawXCursorPosition,
+                         mRawYCursorPosition, kIdentityTransform, mDownTime, mEventTime,
+                         mPointers.size(), pointerProperties.data(), pointerCoords.data());
+        return event;
+    }
+
+private:
+    int32_t mAction;
+    int32_t mDeviceId{DEFAULT_DEVICE_ID};
+    int32_t mSource;
+    nsecs_t mDownTime;
+    nsecs_t mEventTime;
+    int32_t mDisplayId{ADISPLAY_ID_DEFAULT};
+    int32_t mActionButton{0};
+    int32_t mButtonState{0};
+    int32_t mFlags{0};
+    float mRawXCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
+    float mRawYCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
+
+    std::vector<PointerBuilder> mPointers;
+};
+
+class MotionArgsBuilder {
+public:
+    MotionArgsBuilder(int32_t action, int32_t source) {
+        mAction = action;
+        mSource = source;
+        mEventTime = systemTime(SYSTEM_TIME_MONOTONIC);
+        mDownTime = mEventTime;
+    }
+
+    MotionArgsBuilder& deviceId(int32_t deviceId) {
+        mDeviceId = deviceId;
+        return *this;
+    }
+
+    MotionArgsBuilder& downTime(nsecs_t downTime) {
+        mDownTime = downTime;
+        return *this;
+    }
+
+    MotionArgsBuilder& eventTime(nsecs_t eventTime) {
+        mEventTime = eventTime;
+        return *this;
+    }
+
+    MotionArgsBuilder& displayId(int32_t displayId) {
+        mDisplayId = displayId;
+        return *this;
+    }
+
+    MotionArgsBuilder& policyFlags(int32_t policyFlags) {
+        mPolicyFlags = policyFlags;
+        return *this;
+    }
+
+    MotionArgsBuilder& actionButton(int32_t actionButton) {
+        mActionButton = actionButton;
+        return *this;
+    }
+
+    MotionArgsBuilder& buttonState(int32_t buttonState) {
+        mButtonState = buttonState;
+        return *this;
+    }
+
+    MotionArgsBuilder& rawXCursorPosition(float rawXCursorPosition) {
+        mRawXCursorPosition = rawXCursorPosition;
+        return *this;
+    }
+
+    MotionArgsBuilder& rawYCursorPosition(float rawYCursorPosition) {
+        mRawYCursorPosition = rawYCursorPosition;
+        return *this;
+    }
+
+    MotionArgsBuilder& pointer(PointerBuilder pointer) {
+        mPointers.push_back(pointer);
+        return *this;
+    }
+
+    MotionArgsBuilder& addFlag(uint32_t flags) {
+        mFlags |= flags;
+        return *this;
+    }
+
+    MotionArgsBuilder& classification(MotionClassification classification) {
+        mClassification = classification;
+        return *this;
+    }
+
+    NotifyMotionArgs build() {
+        std::vector<PointerProperties> pointerProperties;
+        std::vector<PointerCoords> pointerCoords;
+        for (const PointerBuilder& pointer : mPointers) {
+            pointerProperties.push_back(pointer.buildProperties());
+            pointerCoords.push_back(pointer.buildCoords());
+        }
+
+        // Set mouse cursor position for the most common cases to avoid boilerplate.
+        if (mSource == AINPUT_SOURCE_MOUSE &&
+            !MotionEvent::isValidCursorPosition(mRawXCursorPosition, mRawYCursorPosition)) {
+            mRawXCursorPosition = pointerCoords[0].getX();
+            mRawYCursorPosition = pointerCoords[0].getY();
+        }
+
+        if (mAction == AMOTION_EVENT_ACTION_CANCEL) {
+            addFlag(AMOTION_EVENT_FLAG_CANCELED);
+        }
+
+        return {InputEvent::nextId(),
+                mEventTime,
+                /*readTime=*/mEventTime,
+                mDeviceId,
+                mSource,
+                mDisplayId,
+                mPolicyFlags,
+                mAction,
+                mActionButton,
+                mFlags,
+                AMETA_NONE,
+                mButtonState,
+                mClassification,
+                /*edgeFlags=*/0,
+                static_cast<uint32_t>(mPointers.size()),
+                pointerProperties.data(),
+                pointerCoords.data(),
+                /*xPrecision=*/0,
+                /*yPrecision=*/0,
+                mRawXCursorPosition,
+                mRawYCursorPosition,
+                mDownTime,
+                /*videoFrames=*/{}};
+    }
+
+private:
+    int32_t mAction;
+    int32_t mDeviceId{DEFAULT_DEVICE_ID};
+    uint32_t mSource;
+    nsecs_t mDownTime;
+    nsecs_t mEventTime;
+    int32_t mDisplayId{ADISPLAY_ID_DEFAULT};
+    uint32_t mPolicyFlags = DEFAULT_POLICY_FLAGS;
+    int32_t mActionButton{0};
+    int32_t mButtonState{0};
+    int32_t mFlags{0};
+    MotionClassification mClassification{MotionClassification::NONE};
+    float mRawXCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
+    float mRawYCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
+
+    std::vector<PointerBuilder> mPointers;
+};
+
+class KeyArgsBuilder {
+public:
+    KeyArgsBuilder(int32_t action, int32_t source) {
+        mAction = action;
+        mSource = source;
+        mEventTime = systemTime(SYSTEM_TIME_MONOTONIC);
+        mDownTime = mEventTime;
+    }
+
+    KeyArgsBuilder& deviceId(int32_t deviceId) {
+        mDeviceId = deviceId;
+        return *this;
+    }
+
+    KeyArgsBuilder& downTime(nsecs_t downTime) {
+        mDownTime = downTime;
+        return *this;
+    }
+
+    KeyArgsBuilder& eventTime(nsecs_t eventTime) {
+        mEventTime = eventTime;
+        return *this;
+    }
+
+    KeyArgsBuilder& displayId(int32_t displayId) {
+        mDisplayId = displayId;
+        return *this;
+    }
+
+    KeyArgsBuilder& policyFlags(int32_t policyFlags) {
+        mPolicyFlags = policyFlags;
+        return *this;
+    }
+
+    KeyArgsBuilder& addFlag(uint32_t flags) {
+        mFlags |= flags;
+        return *this;
+    }
+
+    KeyArgsBuilder& keyCode(int32_t keyCode) {
+        mKeyCode = keyCode;
+        return *this;
+    }
+
+    NotifyKeyArgs build() const {
+        return {InputEvent::nextId(),
+                mEventTime,
+                /*readTime=*/mEventTime,
+                mDeviceId,
+                mSource,
+                mDisplayId,
+                mPolicyFlags,
+                mAction,
+                mFlags,
+                mKeyCode,
+                mScanCode,
+                mMetaState,
+                mDownTime};
+    }
+
+private:
+    int32_t mAction;
+    int32_t mDeviceId = DEFAULT_DEVICE_ID;
+    uint32_t mSource;
+    nsecs_t mDownTime;
+    nsecs_t mEventTime;
+    int32_t mDisplayId{ADISPLAY_ID_DEFAULT};
+    uint32_t mPolicyFlags = DEFAULT_POLICY_FLAGS;
+    int32_t mFlags{0};
+    int32_t mKeyCode{AKEYCODE_UNKNOWN};
+    int32_t mScanCode{0};
+    int32_t mMetaState{AMETA_NONE};
+};
+
+} // namespace android
diff --git a/include/input/InputDevice.h b/include/input/InputDevice.h
index 1a40fdb..b7751f7 100644
--- a/include/input/InputDevice.h
+++ b/include/input/InputDevice.h
@@ -18,8 +18,10 @@
 
 #include <android/sensor.h>
 #include <ftl/flags.h>
+#include <ftl/mixins.h>
 #include <input/Input.h>
 #include <input/KeyCharacterMap.h>
+#include <set>
 #include <unordered_map>
 #include <vector>
 
@@ -68,6 +70,9 @@
      * while conforming to the filename limitations.
      */
     std::string getCanonicalName() const;
+
+    bool operator==(const InputDeviceIdentifier&) const = default;
+    bool operator!=(const InputDeviceIdentifier&) const = default;
 };
 
 /* Types of input device sensors. Keep sync with core/java/android/hardware/Sensor.java */
@@ -179,11 +184,24 @@
     int32_t id;
 };
 
+struct BrightnessLevel : ftl::DefaultConstructible<BrightnessLevel, std::uint8_t>,
+                         ftl::Equatable<BrightnessLevel>,
+                         ftl::Orderable<BrightnessLevel>,
+                         ftl::Addable<BrightnessLevel> {
+    using DefaultConstructible::DefaultConstructible;
+};
+
 struct InputDeviceLightInfo {
     explicit InputDeviceLightInfo(std::string name, int32_t id, InputDeviceLightType type,
                                   ftl::Flags<InputDeviceLightCapability> capabilityFlags,
-                                  int32_t ordinal)
-          : name(name), id(id), type(type), capabilityFlags(capabilityFlags), ordinal(ordinal) {}
+                                  int32_t ordinal,
+                                  std::set<BrightnessLevel> preferredBrightnessLevels)
+          : name(name),
+            id(id),
+            type(type),
+            capabilityFlags(capabilityFlags),
+            ordinal(ordinal),
+            preferredBrightnessLevels(std::move(preferredBrightnessLevels)) {}
     // Name string of the light.
     std::string name;
     // Light id
@@ -194,6 +212,8 @@
     ftl::Flags<InputDeviceLightCapability> capabilityFlags;
     // Ordinal of the light
     int32_t ordinal;
+    // Custom brightness levels for the light
+    std::set<BrightnessLevel> preferredBrightnessLevels;
 };
 
 struct InputDeviceBatteryInfo {
diff --git a/include/input/InputEventLabels.h b/include/input/InputEventLabels.h
index 9dedd2b..909bf08 100644
--- a/include/input/InputEventLabels.h
+++ b/include/input/InputEventLabels.h
@@ -40,7 +40,16 @@
 //   then you must add it to InputEventLabels.cpp.
 
 class InputEventLookup {
+    /**
+     * This class is not purely static, but uses a singleton pattern in order to delay the
+     * initialization of the maps that it contains. If it were purely static, the maps could be
+     * created early, and would cause sanitizers to report memory leaks.
+     */
 public:
+    InputEventLookup(InputEventLookup& other) = delete;
+
+    void operator=(const InputEventLookup&) = delete;
+
     static std::optional<int> lookupValueByLabel(const std::unordered_map<std::string, int>& map,
                                                  const char* literal);
 
@@ -61,17 +70,24 @@
     static EvdevEventLabel getLinuxEvdevLabel(int32_t type, int32_t code, int32_t value);
 
 private:
-    static const std::unordered_map<std::string, int> KEYCODES;
+    InputEventLookup();
 
-    static const std::vector<InputEventLabel> KEY_NAMES;
+    static const InputEventLookup& get() {
+        static InputEventLookup sLookup;
+        return sLookup;
+    }
 
-    static const std::unordered_map<std::string, int> AXES;
+    const std::unordered_map<std::string, int> KEYCODES;
 
-    static const std::vector<InputEventLabel> AXES_NAMES;
+    const std::vector<InputEventLabel> KEY_NAMES;
 
-    static const std::unordered_map<std::string, int> LEDS;
+    const std::unordered_map<std::string, int> AXES;
 
-    static const std::unordered_map<std::string, int> FLAGS;
+    const std::vector<InputEventLabel> AXES_NAMES;
+
+    const std::unordered_map<std::string, int> LEDS;
+
+    const std::unordered_map<std::string, int> FLAGS;
 };
 
 } // namespace android
diff --git a/include/input/InputVerifier.h b/include/input/InputVerifier.h
index d4589f5..3715408 100644
--- a/include/input/InputVerifier.h
+++ b/include/input/InputVerifier.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023 The Android Open Source Project
+ * Copyright 2023 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,13 +16,25 @@
 
 #pragma once
 
+#include <android-base/result.h>
 #include <input/Input.h>
-#include <map>
+#include "rust/cxx.h"
 
 namespace android {
 
+namespace input {
+namespace verifier {
+struct InputVerifier;
+}
+} // namespace input
+
 /*
  * Crash if the provided touch stream is inconsistent.
+ * This class is a pass-through to the rust implementation of InputVerifier.
+ * The rust class could also be used directly, but it would be less convenient.
+ * We can't directly invoke the rust methods on a rust object. So, there's no way to do:
+ * mVerifier.process_movement(...).
+ * This C++ class makes it a bit easier to use.
  *
  * TODO(b/211379801): Add support for hover events:
  * - No hover move without enter
@@ -34,16 +46,13 @@
 public:
     InputVerifier(const std::string& name);
 
-    void processMovement(int32_t deviceId, int32_t action, uint32_t pointerCount,
-                         const PointerProperties* pointerProperties,
-                         const PointerCoords* pointerCoords, int32_t flags);
+    android::base::Result<void> processMovement(int32_t deviceId, int32_t action,
+                                                uint32_t pointerCount,
+                                                const PointerProperties* pointerProperties,
+                                                const PointerCoords* pointerCoords, int32_t flags);
 
 private:
-    const std::string mName;
-    std::map<int32_t /*deviceId*/, std::bitset<MAX_POINTER_ID + 1>> mTouchingPointerIdsByDevice;
-    void ensureTouchingPointersMatch(int32_t deviceId, uint32_t pointerCount,
-                                     const PointerProperties* pointerProperties,
-                                     const char* action) const;
+    rust::Box<android::input::verifier::InputVerifier> mVerifier;
 };
 
 } // namespace android
diff --git a/include/input/PrintTools.h b/include/input/PrintTools.h
index 02bc201..0ca6fa3 100644
--- a/include/input/PrintTools.h
+++ b/include/input/PrintTools.h
@@ -88,6 +88,20 @@
 }
 
 /**
+ * Convert map keys to string. The keys of the map should be integral type.
+ */
+template <typename K, typename V>
+std::string dumpMapKeys(const std::map<K, V>& map,
+                        std::string (*keyToString)(const K&) = constToString) {
+    std::string out;
+    for (const auto& [k, _] : map) {
+        out += out.empty() ? "{" : ", ";
+        out += keyToString(k);
+    }
+    return out.empty() ? "{}" : (out + "}");
+}
+
+/**
  * Convert a vector to a string. The values of the vector should be of a type supported by
  * constToString.
  */
diff --git a/include/powermanager/PowerHalController.h b/include/powermanager/PowerHalController.h
index 71a36d0..82e4551 100644
--- a/include/powermanager/PowerHalController.h
+++ b/include/powermanager/PowerHalController.h
@@ -53,7 +53,7 @@
           : mHalConnector(std::move(connector)) {}
     virtual ~PowerHalController() = default;
 
-    void init();
+    virtual void init();
 
     virtual HalResult<void> setBoost(hardware::power::Boost boost, int32_t durationMs) override;
     virtual HalResult<void> setMode(hardware::power::Mode mode, bool enabled) override;
diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index 5fbae3c..582437f 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -142,8 +142,8 @@
     return appDebuggable || platformDebuggable;
 }
 
-void GraphicsEnv::setDriverPathAndSphalLibraries(const std::string path,
-                                                 const std::string sphalLibraries) {
+void GraphicsEnv::setDriverPathAndSphalLibraries(const std::string& path,
+                                                 const std::string& sphalLibraries) {
     if (!mDriverPath.empty() || !mSphalLibraries.empty()) {
         ALOGV("ignoring attempt to change driver path from '%s' to '%s' or change sphal libraries "
               "from '%s' to '%s'",
@@ -392,55 +392,24 @@
     return true;
 }
 
-void* GraphicsEnv::loadLibrary(std::string name) {
-    const android_dlextinfo dlextinfo = {
-            .flags = ANDROID_DLEXT_USE_NAMESPACE,
-            .library_namespace = getAngleNamespace(),
-    };
-
-    std::string libName = std::string("lib") + name + "_angle.so";
-
-    void* so = android_dlopen_ext(libName.c_str(), RTLD_LOCAL | RTLD_NOW, &dlextinfo);
-
-    if (so) {
-        ALOGD("dlopen_ext from APK (%s) success at %p", libName.c_str(), so);
-        return so;
-    } else {
-        ALOGE("dlopen_ext(\"%s\") failed: %s", libName.c_str(), dlerror());
-    }
-
-    return nullptr;
-}
-
-bool GraphicsEnv::shouldUseAngle(std::string appName) {
-    if (appName != mAngleAppName) {
-        // Make sure we are checking the app we were init'ed for
-        ALOGE("App name does not match: expected '%s', got '%s'", mAngleAppName.c_str(),
-              appName.c_str());
-        return false;
-    }
-
-    return shouldUseAngle();
-}
-
 bool GraphicsEnv::shouldUseAngle() {
     // Make sure we are init'ed
-    if (mAngleAppName.empty()) {
-        ALOGV("App name is empty. setAngleInfo() has not been called to enable ANGLE.");
+    if (mPackageName.empty()) {
+        ALOGV("Package name is empty. setAngleInfo() has not been called to enable ANGLE.");
         return false;
     }
 
-    return (mUseAngle == YES) ? true : false;
+    return (mShouldUseAngle == YES) ? true : false;
 }
 
-void GraphicsEnv::updateUseAngle() {
+void GraphicsEnv::updateShouldUseAngle() {
     const char* ANGLE_PREFER_ANGLE = "angle";
     const char* ANGLE_PREFER_NATIVE = "native";
 
-    mUseAngle = NO;
+    mShouldUseAngle = NO;
     if (mAngleDeveloperOptIn == ANGLE_PREFER_ANGLE) {
         ALOGV("User set \"Developer Options\" to force the use of ANGLE");
-        mUseAngle = YES;
+        mShouldUseAngle = YES;
     } else if (mAngleDeveloperOptIn == ANGLE_PREFER_NATIVE) {
         ALOGV("User set \"Developer Options\" to force the use of Native");
     } else {
@@ -448,13 +417,13 @@
     }
 }
 
-void GraphicsEnv::setAngleInfo(const std::string path, const std::string appName,
-                               const std::string developerOptIn,
+void GraphicsEnv::setAngleInfo(const std::string& path, const std::string& packageName,
+                               const std::string& developerOptIn,
                                const std::vector<std::string> eglFeatures) {
-    if (mUseAngle != UNKNOWN) {
+    if (mShouldUseAngle != UNKNOWN) {
         // We've already figured out an answer for this app, so just return.
-        ALOGV("Already evaluated the rules file for '%s': use ANGLE = %s", appName.c_str(),
-              (mUseAngle == YES) ? "true" : "false");
+        ALOGV("Already evaluated the rules file for '%s': use ANGLE = %s", packageName.c_str(),
+              (mShouldUseAngle == YES) ? "true" : "false");
         return;
     }
 
@@ -462,16 +431,17 @@
 
     ALOGV("setting ANGLE path to '%s'", path.c_str());
     mAnglePath = path;
-    ALOGV("setting ANGLE app name to '%s'", appName.c_str());
-    mAngleAppName = appName;
+    ALOGV("setting app package name to '%s'", packageName.c_str());
+    mPackageName = packageName;
     ALOGV("setting ANGLE application opt-in to '%s'", developerOptIn.c_str());
     mAngleDeveloperOptIn = developerOptIn;
 
     // Update the current status of whether we should use ANGLE or not
-    updateUseAngle();
+    updateShouldUseAngle();
 }
 
-void GraphicsEnv::setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths) {
+void GraphicsEnv::setLayerPaths(NativeLoaderNamespace* appNamespace,
+                                const std::string& layerPaths) {
     if (mLayerPaths.empty()) {
         mLayerPaths = layerPaths;
         mAppNamespace = appNamespace;
@@ -485,8 +455,8 @@
     return mAppNamespace;
 }
 
-std::string& GraphicsEnv::getAngleAppName() {
-    return mAngleAppName;
+std::string& GraphicsEnv::getPackageName() {
+    return mPackageName;
 }
 
 const std::vector<std::string>& GraphicsEnv::getAngleEglFeatures() {
@@ -505,11 +475,11 @@
     return mDebugLayersGLES;
 }
 
-void GraphicsEnv::setDebugLayers(const std::string layers) {
+void GraphicsEnv::setDebugLayers(const std::string& layers) {
     mDebugLayers = layers;
 }
 
-void GraphicsEnv::setDebugLayersGLES(const std::string layers) {
+void GraphicsEnv::setDebugLayersGLES(const std::string& layers) {
     mDebugLayersGLES = layers;
 }
 
diff --git a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
index f9b234a..a1b5e50 100644
--- a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
+++ b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
@@ -55,7 +55,7 @@
     // Also set additional required sphal libraries to the linker for loading
     // graphics drivers. The string is a list of libraries separated by ':',
     // which is required by android_link_namespaces.
-    void setDriverPathAndSphalLibraries(const std::string path, const std::string sphalLibraries);
+    void setDriverPathAndSphalLibraries(const std::string& path, const std::string& sphalLibraries);
     // Get the updatable driver namespace.
     android_namespace_t* getDriverNamespace();
     std::string getDriverPath() const;
@@ -96,8 +96,6 @@
     /*
      * Apis for ANGLE
      */
-    // Check if the requested app should use ANGLE.
-    bool shouldUseAngle(std::string appName);
     // Check if this app process should use ANGLE.
     bool shouldUseAngle();
     // Set a search path for loading ANGLE libraries. The path is a list of
@@ -105,42 +103,39 @@
     // (libraries must be stored uncompressed and page aligned); such elements
     // in the search path must have a '!' after the zip filename, e.g.
     //     /system/app/ANGLEPrebuilt/ANGLEPrebuilt.apk!/lib/arm64-v8a
-    void setAngleInfo(const std::string path, const std::string appName, std::string devOptIn,
-                      const std::vector<std::string> eglFeatures);
+    void setAngleInfo(const std::string& path, const std::string& packageName,
+                      const std::string& devOptIn, const std::vector<std::string> eglFeatures);
     // Get the ANGLE driver namespace.
     android_namespace_t* getAngleNamespace();
-    // Get the app name for ANGLE debug message.
-    std::string& getAngleAppName();
-
+    // Get the app package name.
+    std::string& getPackageName();
     const std::vector<std::string>& getAngleEglFeatures();
+    // Set the persist.graphics.egl system property value.
+    void nativeToggleAngleAsSystemDriver(bool enabled);
 
     /*
      * Apis for debug layer
      */
     // Set additional layer search paths.
-    void setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths);
+    void setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string& layerPaths);
     // Get the app namespace for loading layers.
     NativeLoaderNamespace* getAppNamespace();
     // Get additional layer search paths.
     const std::string& getLayerPaths();
     // Set the Vulkan debug layers.
-    void setDebugLayers(const std::string layers);
+    void setDebugLayers(const std::string& layers);
     // Set the GL debug layers.
-    void setDebugLayersGLES(const std::string layers);
+    void setDebugLayersGLES(const std::string& layers);
     // Get the debug layers to load.
     const std::string& getDebugLayers();
     // Get the debug layers to load.
     const std::string& getDebugLayersGLES();
-    // Set the persist.graphics.egl system property value.
-    void nativeToggleAngleAsSystemDriver(bool enabled);
 
 private:
     enum UseAngle { UNKNOWN, YES, NO };
 
-    // Load requested ANGLE library.
-    void* loadLibrary(std::string name);
     // Update whether ANGLE should be used.
-    void updateUseAngle();
+    void updateShouldUseAngle();
     // Link updatable driver namespace with llndk and vndk-sp libs.
     bool linkDriverNamespaceLocked(android_namespace_t* vndkNamespace);
     // Check whether this process is ready to send stats.
@@ -149,39 +144,56 @@
     void sendGpuStatsLocked(GpuStatsInfo::Api api, bool isDriverLoaded, int64_t driverLoadingTime);
 
     GraphicsEnv() = default;
+
+    // This mutex protects the namespace creation.
+    std::mutex mNamespaceMutex;
+
+    /**
+     * Updatable driver variables.
+     */
     // Path to updatable driver libs.
     std::string mDriverPath;
     // Path to additional sphal libs linked to updatable driver namespace.
     std::string mSphalLibraries;
+    // Updatable driver namespace.
+    android_namespace_t* mDriverNamespace = nullptr;
+
+    /**
+     * ANGLE variables.
+     */
+    // Path to ANGLE libs.
+    std::string mAnglePath;
+    // App's package name.
+    std::string mPackageName;
+    // ANGLE developer opt in status.
+    std::string mAngleDeveloperOptIn;
+    // ANGLE EGL features;
+    std::vector<std::string> mAngleEglFeatures;
+    // Use ANGLE flag.
+    UseAngle mShouldUseAngle = UNKNOWN;
+    // ANGLE namespace.
+    android_namespace_t* mAngleNamespace = nullptr;
+
+    /**
+     * GPU metrics.
+     */
     // This mutex protects mGpuStats and get gpuservice call.
     std::mutex mStatsLock;
     // Cache the activity launch info
     bool mActivityLaunched = false;
     // Information bookkept for GpuStats.
     GpuStatsInfo mGpuStats;
-    // Path to ANGLE libs.
-    std::string mAnglePath;
-    // This App's name.
-    std::string mAngleAppName;
-    // ANGLE developer opt in status.
-    std::string mAngleDeveloperOptIn;
-    // ANGLE EGL features;
-    std::vector<std::string> mAngleEglFeatures;
-    // Use ANGLE flag.
-    UseAngle mUseAngle = UNKNOWN;
+
+    /**
+     * Debug layers.
+     */
     // Vulkan debug layers libs.
     std::string mDebugLayers;
     // GL debug layers libs.
     std::string mDebugLayersGLES;
     // Additional debug layers search path.
     std::string mLayerPaths;
-    // This mutex protects the namespace creation.
-    std::mutex mNamespaceMutex;
-    // Updatable driver namespace.
-    android_namespace_t* mDriverNamespace = nullptr;
-    // ANGLE namespace.
-    android_namespace_t* mAngleNamespace = nullptr;
-    // This App's namespace.
+    // This App's namespace to open native libraries.
     NativeLoaderNamespace* mAppNamespace = nullptr;
 };
 
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index ed69100..53a2f64 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -1792,19 +1792,20 @@
 
 int Surface::dispatchSetFrameTimelineInfo(va_list args) {
     ATRACE_CALL();
-    auto frameNumber = static_cast<uint64_t>(va_arg(args, uint64_t));
-    auto frameTimelineVsyncId = static_cast<int64_t>(va_arg(args, int64_t));
-    auto inputEventId = static_cast<int32_t>(va_arg(args, int32_t));
-    auto startTimeNanos = static_cast<int64_t>(va_arg(args, int64_t));
-    auto useForRefreshRateSelection = static_cast<bool>(va_arg(args, int32_t));
-
     ALOGV("Surface::%s", __func__);
+
+    const auto nativeWindowFtlInfo = static_cast<ANativeWindowFrameTimelineInfo>(
+            va_arg(args, ANativeWindowFrameTimelineInfo));
+
     FrameTimelineInfo ftlInfo;
-    ftlInfo.vsyncId = frameTimelineVsyncId;
-    ftlInfo.inputEventId = inputEventId;
-    ftlInfo.startTimeNanos = startTimeNanos;
-    ftlInfo.useForRefreshRateSelection = useForRefreshRateSelection;
-    return setFrameTimelineInfo(frameNumber, ftlInfo);
+    ftlInfo.vsyncId = nativeWindowFtlInfo.frameTimelineVsyncId;
+    ftlInfo.inputEventId = nativeWindowFtlInfo.inputEventId;
+    ftlInfo.startTimeNanos = nativeWindowFtlInfo.startTimeNanos;
+    ftlInfo.useForRefreshRateSelection = nativeWindowFtlInfo.useForRefreshRateSelection;
+    ftlInfo.skippedFrameVsyncId = nativeWindowFtlInfo.skippedFrameVsyncId;
+    ftlInfo.skippedFrameStartTimeNanos = nativeWindowFtlInfo.skippedFrameStartTimeNanos;
+
+    return setFrameTimelineInfo(nativeWindowFtlInfo.frameNumber, ftlInfo);
 }
 
 bool Surface::transformToDisplayInverse() const {
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 0fda358..5bc05ef 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -1027,7 +1027,7 @@
     mEarlyWakeupEnd = false;
     mDesiredPresentTime = 0;
     mIsAutoTimestamp = true;
-    clearFrameTimelineInfo(mFrameTimelineInfo);
+    mFrameTimelineInfo = {};
     mApplyToken = nullptr;
     mMergedTransactionIds.clear();
 }
@@ -2279,27 +2279,13 @@
     if (t.vsyncId != FrameTimelineInfo::INVALID_VSYNC_ID &&
         other.vsyncId != FrameTimelineInfo::INVALID_VSYNC_ID) {
         if (other.vsyncId > t.vsyncId) {
-            t.vsyncId = other.vsyncId;
-            t.inputEventId = other.inputEventId;
-            t.startTimeNanos = other.startTimeNanos;
-            t.useForRefreshRateSelection = other.useForRefreshRateSelection;
+            t = other;
         }
     } else if (t.vsyncId == FrameTimelineInfo::INVALID_VSYNC_ID) {
-        t.vsyncId = other.vsyncId;
-        t.inputEventId = other.inputEventId;
-        t.startTimeNanos = other.startTimeNanos;
-        t.useForRefreshRateSelection = other.useForRefreshRateSelection;
+        t = other;
     }
 }
 
-// copied from FrameTimelineInfo::clear()
-void SurfaceComposerClient::Transaction::clearFrameTimelineInfo(FrameTimelineInfo& t) {
-    t.vsyncId = FrameTimelineInfo::INVALID_VSYNC_ID;
-    t.inputEventId = os::IInputConstants::INVALID_INPUT_EVENT_ID;
-    t.startTimeNanos = 0;
-    t.useForRefreshRateSelection = false;
-}
-
 SurfaceComposerClient::Transaction&
 SurfaceComposerClient::Transaction::setTrustedPresentationCallback(
         const sp<SurfaceControl>& sc, TrustedPresentationCallback cb,
diff --git a/libs/gui/TEST_MAPPING b/libs/gui/TEST_MAPPING
index 9415035..a4d9e77 100644
--- a/libs/gui/TEST_MAPPING
+++ b/libs/gui/TEST_MAPPING
@@ -4,10 +4,58 @@
       "path": "frameworks/native/libs/nativewindow"
     }
   ],
-  "postsubmit": [
+  "presubmit": [
     {
-      // TODO(257123981): move this to presubmit after dealing with existing breakages.
-      "name": "libgui_test"
+      "name": "libgui_test",
+      "options": [
+        // TODO(b/277604286): Failing on Cuttlefish.
+        {
+          "exclude-filter": "MultiTextureConsumerTest#EGLImageTargetWorks"
+        },
+
+        // TODO(b/285011590): Failing on Cuttlefish.
+        {
+          "exclude-filter": "SurfaceTest#GetHdrSupport"
+        },
+        {
+          "exclude-filter": "SurfaceTest#GetWideColorSupport"
+        },
+
+        // TODO(b/285006554): Failing on Cuttlefish.
+        {
+          "exclude-filter": "SurfaceTextureGLTest#InvalidWidthOrHeightFails"
+        },
+
+        // TODO(b/277347351): Known test data issues, failing across devices.
+        {
+          "exclude-filter": "SurfaceTextureGLTest#TexturingFromCpuFilledYV12BufferNpot"
+        },
+        {
+          "exclude-filter": "SurfaceTextureGLTest#TexturingFromCpuFilledYV12BufferPow2"
+        },
+        {
+          "exclude-filter": "SurfaceTextureGLTest#TexturingFromCpuFilledYV12BufferWithCrop"
+        },
+        {
+          "exclude-filter": "SurfaceTextureGLTest#TexturingFromCpuFilledYV12BuffersRepeatedly"
+        },
+
+        // TODO(b/285041169): Hanging on Cuttlefish.
+        {
+          "exclude-filter": "SurfaceTextureGLThreadToGLTest#UpdateTexImageBeforeFrameFinishedCompletes"
+        },
+        {
+          "exclude-filter": "SurfaceTextureGLThreadToGLTest#RepeatedUpdateTexImageBeforeFrameFinishedCompletes"
+        },
+        {
+          "exclude-filter": "SurfaceTextureGLThreadToGLTest#RepeatedUpdateTexImageAfterFrameFinishedCompletes"
+        },
+
+        // TODO(b/285041070): Failing on Cuttlefish.
+        {
+          "exclude-filter": "SurfaceTextureGLToGLTest#EglDestroySurfaceUnrefsBuffers"
+        }
+      ]
     }
   ]
 }
diff --git a/libs/gui/WindowInfo.cpp b/libs/gui/WindowInfo.cpp
index 6df9ff1..cd9b424 100644
--- a/libs/gui/WindowInfo.cpp
+++ b/libs/gui/WindowInfo.cpp
@@ -90,8 +90,9 @@
     }
     parcel->writeInt32(1);
 
-    // Ensure that the size of the flags that we use is 32 bits for writing into the parcel.
+    // Ensure that the size of custom types are what we expect for writing into the parcel.
     static_assert(sizeof(inputConfig) == 4u);
+    static_assert(sizeof(ownerUid.val()) == 4u);
 
     // clang-format off
     status_t status = parcel->writeStrongBinder(token) ?:
@@ -116,7 +117,7 @@
         parcel->writeFloat(transform.ty()) ?:
         parcel->writeInt32(static_cast<int32_t>(touchOcclusionMode)) ?:
         parcel->writeInt32(ownerPid) ?:
-        parcel->writeInt32(ownerUid) ?:
+        parcel->writeInt32(ownerUid.val()) ?:
         parcel->writeUtf8AsUtf16(packageName) ?:
         parcel->writeInt32(inputConfig.get()) ?:
         parcel->writeInt32(displayId) ?:
@@ -147,7 +148,7 @@
     }
 
     float dsdx, dtdx, tx, dtdy, dsdy, ty;
-    int32_t lpFlags, lpType, touchOcclusionModeInt, inputConfigInt;
+    int32_t lpFlags, lpType, touchOcclusionModeInt, inputConfigInt, ownerUidInt;
     sp<IBinder> touchableRegionCropHandleSp;
 
     // clang-format off
@@ -168,7 +169,7 @@
         parcel->readFloat(&ty) ?:
         parcel->readInt32(&touchOcclusionModeInt) ?:
         parcel->readInt32(&ownerPid) ?:
-        parcel->readInt32(&ownerUid) ?:
+        parcel->readInt32(&ownerUidInt) ?:
         parcel->readUtf8FromUtf16(&packageName) ?:
         parcel->readInt32(&inputConfigInt) ?:
         parcel->readInt32(&displayId) ?:
@@ -190,6 +191,7 @@
     transform.set({dsdx, dtdx, tx, dtdy, dsdy, ty, 0, 0, 1});
     touchOcclusionMode = static_cast<TouchOcclusionMode>(touchOcclusionModeInt);
     inputConfig = ftl::Flags<InputConfig>(inputConfigInt);
+    ownerUid = Uid{static_cast<uid_t>(ownerUidInt)};
     touchableRegionCropHandle = touchableRegionCropHandleSp;
 
     return OK;
diff --git a/libs/gui/aidl/android/gui/FrameTimelineInfo.aidl b/libs/gui/aidl/android/gui/FrameTimelineInfo.aidl
index 6a86c6a..4b647a4 100644
--- a/libs/gui/aidl/android/gui/FrameTimelineInfo.aidl
+++ b/libs/gui/aidl/android/gui/FrameTimelineInfo.aidl
@@ -37,4 +37,10 @@
     // Whether this vsyncId should be used to heuristically select the display refresh rate
     // TODO(b/281695725): Clean this up once TextureView use setFrameRate API
     boolean useForRefreshRateSelection = false;
+
+    // The VsyncId of a frame that was not drawn and squashed into this frame.
+    long skippedFrameVsyncId = INVALID_VSYNC_ID;
+
+    // The start time of a frame that was not drawn and squashed into this frame.
+    long skippedFrameStartTimeNanos = 0;
 }
diff --git a/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp b/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp
index 57720dd..7268e64 100644
--- a/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp
+++ b/libs/gui/fuzzer/libgui_surfaceComposerClient_fuzzer.cpp
@@ -187,7 +187,7 @@
     windowInfo->replaceTouchableRegionWithCrop = mFdp.ConsumeBool();
     windowInfo->touchOcclusionMode = mFdp.PickValueInArray(kMode);
     windowInfo->ownerPid = mFdp.ConsumeIntegral<int32_t>();
-    windowInfo->ownerUid = mFdp.ConsumeIntegral<int32_t>();
+    windowInfo->ownerUid = gui::Uid{mFdp.ConsumeIntegral<uid_t>()};
     windowInfo->packageName = mFdp.ConsumeRandomLengthString(kRandomStringMaxBytes);
     windowInfo->inputConfig = mFdp.PickValueInArray(kFeatures);
 }
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index fb57f63..3cf57b1 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -410,7 +410,6 @@
         static sp<IBinder> sApplyToken;
         void releaseBufferIfOverwriting(const layer_state_t& state);
         static void mergeFrameTimelineInfo(FrameTimelineInfo& t, const FrameTimelineInfo& other);
-        static void clearFrameTimelineInfo(FrameTimelineInfo& t);
 
     protected:
         std::unordered_map<sp<IBinder>, ComposerState, IBinderHash> mComposerStates;
diff --git a/libs/gui/include/gui/Uid.h b/libs/gui/include/gui/Uid.h
new file mode 100644
index 0000000..8e45ef5
--- /dev/null
+++ b/libs/gui/include/gui/Uid.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2023 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 <ftl/mixins.h>
+#include <sys/types.h>
+#include <string>
+
+namespace android::gui {
+
+// Type-safe wrapper for a UID.
+// We treat the unsigned equivalent of -1 as a singular invalid value.
+struct Uid : ftl::Constructible<Uid, uid_t>, ftl::Equatable<Uid>, ftl::Orderable<Uid> {
+    using Constructible::Constructible;
+
+    const static Uid INVALID;
+
+    constexpr auto val() const { return ftl::to_underlying(*this); }
+
+    constexpr bool isValid() const { return val() != static_cast<uid_t>(-1); }
+
+    std::string toString() const { return std::to_string(val()); }
+};
+
+const inline Uid Uid::INVALID{static_cast<uid_t>(-1)};
+
+} // namespace android::gui
diff --git a/libs/gui/include/gui/WindowInfo.h b/libs/gui/include/gui/WindowInfo.h
index 70b2ee8..666101e 100644
--- a/libs/gui/include/gui/WindowInfo.h
+++ b/libs/gui/include/gui/WindowInfo.h
@@ -21,6 +21,8 @@
 #include <binder/Parcel.h>
 #include <binder/Parcelable.h>
 #include <ftl/flags.h>
+#include <ftl/mixins.h>
+#include <gui/Uid.h>
 #include <gui/constants.h>
 #include <ui/Rect.h>
 #include <ui/Region.h>
@@ -224,7 +226,7 @@
 
     TouchOcclusionMode touchOcclusionMode = TouchOcclusionMode::BLOCK_UNTRUSTED;
     int32_t ownerPid = -1;
-    int32_t ownerUid = -1;
+    Uid ownerUid = Uid::INVALID;
     std::string packageName;
     ftl::Flags<InputConfig> inputConfig;
     int32_t displayId = ADISPLAY_ID_NONE;
diff --git a/libs/gui/tests/Android.bp b/libs/gui/tests/Android.bp
index cd35d2f..462ce6e 100644
--- a/libs/gui/tests/Android.bp
+++ b/libs/gui/tests/Android.bp
@@ -21,6 +21,7 @@
     ],
 
     srcs: [
+        "LibGuiMain.cpp", // Custom gtest entrypoint
         "BLASTBufferQueue_test.cpp",
         "BufferItemConsumer_test.cpp",
         "BufferQueue_test.cpp",
diff --git a/libs/gui/tests/AndroidTest.xml b/libs/gui/tests/AndroidTest.xml
index 5e09fff..31b10d7 100644
--- a/libs/gui/tests/AndroidTest.xml
+++ b/libs/gui/tests/AndroidTest.xml
@@ -23,6 +23,7 @@
       <option name="screen-always-on" value="on" />
     </target_preparer>
     <option name="test-suite-tag" value="apct" />
+    <option name="not-shardable" value="true" />
     <test class="com.android.tradefed.testtype.GTest" >
         <option name="native-test-device-path" value="/data/local/tmp" />
         <option name="module-name" value="libgui_test" />
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index a3ad680..cd90168 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -176,18 +176,6 @@
 class BLASTBufferQueueTest : public ::testing::Test {
 public:
 protected:
-    BLASTBufferQueueTest() {
-        const ::testing::TestInfo* const testInfo =
-                ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("Begin test: %s.%s", testInfo->test_case_name(), testInfo->name());
-    }
-
-    ~BLASTBufferQueueTest() {
-        const ::testing::TestInfo* const testInfo =
-                ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("End test:   %s.%s", testInfo->test_case_name(), testInfo->name());
-    }
-
     void SetUp() {
         mComposer = ComposerService::getComposerService();
         mClient = new SurfaceComposerClient();
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
index 2f1fd3e..d585881 100644
--- a/libs/gui/tests/BufferQueue_test.cpp
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -17,6 +17,7 @@
 #define LOG_TAG "BufferQueue_test"
 //#define LOG_NDEBUG 0
 
+#include "Constants.h"
 #include "MockConsumer.h"
 
 #include <gui/BufferItem.h>
@@ -46,20 +47,6 @@
 
 public:
 protected:
-    BufferQueueTest() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("Begin test: %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-    }
-
-    ~BufferQueueTest() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("End test:   %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-    }
-
     void GetMinUndequeuedBufferCount(int* bufferCount) {
         ASSERT_TRUE(bufferCount != nullptr);
         ASSERT_EQ(OK, mProducer->query(NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS,
@@ -535,7 +522,8 @@
     int slot;
     sp<Fence> fence;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
 
     sp<GraphicBuffer> buffer;
     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer));
@@ -578,7 +566,8 @@
     sp<Fence> fence;
     sp<GraphicBuffer> buffer;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                       nullptr, nullptr));
     ASSERT_EQ(OK, mProducer->requestBuffer(sharedSlot, &buffer));
 
     // Queue the buffer
@@ -592,7 +581,9 @@
     // always the same one and because async mode gets enabled.
     int slot;
     for (int i = 0; i < 5; i++) {
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(sharedSlot, slot);
         ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output));
     }
@@ -629,7 +620,8 @@
     sp<Fence> fence;
     sp<GraphicBuffer> buffer;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                       nullptr, nullptr));
     ASSERT_EQ(OK, mProducer->requestBuffer(sharedSlot, &buffer));
 
     // Queue the buffer
@@ -656,7 +648,9 @@
     // always return the same one.
     int slot;
     for (int i = 0; i < 5; i++) {
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(sharedSlot, slot);
         ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output));
     }
@@ -695,7 +689,8 @@
     sp<Fence> fence;
     sp<GraphicBuffer> buffer;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&sharedSlot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                       nullptr, nullptr));
     ASSERT_EQ(OK, mProducer->requestBuffer(sharedSlot, &buffer));
 
     // Enable shared buffer mode
@@ -712,7 +707,9 @@
     // always the same one and because async mode gets enabled.
     int slot;
     for (int i = 0; i < 5; i++) {
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(sharedSlot, slot);
         ASSERT_EQ(OK, mProducer->queueBuffer(sharedSlot, input, &output));
     }
@@ -747,7 +744,8 @@
     for (int i = 0; i < 5; ++i) {
         int slot = BufferQueue::INVALID_BUFFER_SLOT;
         sp<Fence> fence = Fence::NO_FENCE;
-        auto result = mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr);
+        auto result = mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                               nullptr, nullptr);
         if (i < 2) {
             ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
                     result);
@@ -774,7 +772,9 @@
     for (int i = 0; i < 2; ++i) {
         int slot = BufferQueue::INVALID_BUFFER_SLOT;
         sp<Fence> fence = Fence::NO_FENCE;
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer));
         IGraphicBufferProducer::QueueBufferInput input(0ull, true,
                 HAL_DATASPACE_UNKNOWN, Rect::INVALID_RECT,
@@ -785,7 +785,9 @@
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
     sp<Fence> fence = Fence::NO_FENCE;
     auto startTime = systemTime();
-    ASSERT_EQ(TIMED_OUT, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(TIMED_OUT,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_GE(systemTime() - startTime, TIMEOUT);
 
     // We're technically attaching the same buffer multiple times (since we
@@ -806,7 +808,8 @@
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
     sp<Fence> sourceFence;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&slot, &sourceFence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&slot, &sourceFence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                       nullptr, nullptr));
     sp<GraphicBuffer> buffer;
     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer));
     ASSERT_EQ(OK, mProducer->detachBuffer(slot));
@@ -829,7 +832,8 @@
     int slot = BufferQueue::INVALID_BUFFER_SLOT;
     sp<Fence> fence;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     sp<GraphicBuffer> firstBuffer;
     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &firstBuffer));
 
@@ -841,7 +845,8 @@
     // Dequeue a second buffer
     slot = BufferQueue::INVALID_BUFFER_SLOT;
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION,
-              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     sp<GraphicBuffer> secondBuffer;
     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &secondBuffer));
 
@@ -892,8 +897,8 @@
     int slots[3] = {};
     mProducer->setMaxDequeuedBufferCount(3);
     for (size_t i = 0; i < 3; ++i) {
-        status_t result =
-                mProducer->dequeueBuffer(&slots[i], &fence, 0, 0, 0, 0, nullptr, nullptr);
+        status_t result = mProducer->dequeueBuffer(&slots[i], &fence, 0, 0, 0,
+                                                   TEST_PRODUCER_USAGE_BITS, nullptr, nullptr);
         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result);
         ASSERT_EQ(OK, mProducer->requestBuffer(slots[i], &buffer));
     }
@@ -906,7 +911,9 @@
     // The first segment is a two-buffer segment, so we only put one buffer into
     // the queue at a time
     for (size_t i = 0; i < 5; ++i) {
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0));
         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber,
@@ -921,16 +928,22 @@
     // two-buffer segment, but then at the end, we put two buffers in the queue
     // at the same time before draining it.
     for (size_t i = 0; i < 5; ++i) {
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0));
         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber,
                 EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE));
         std::this_thread::sleep_for(16ms);
     }
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0));
     ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber,
@@ -945,10 +958,14 @@
 
     // The third segment is a triple-buffer segment, so the queue is switching
     // between one buffer and two buffers deep.
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
     for (size_t i = 0; i < 5; ++i) {
-        ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+        ASSERT_EQ(OK,
+                  mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                           nullptr, nullptr));
         ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
         ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0));
         ASSERT_EQ(OK, mConsumer->releaseBuffer(item.mSlot, item.mFrameNumber,
@@ -1047,8 +1064,8 @@
     int slots[4] = {};
     mProducer->setMaxDequeuedBufferCount(4);
     for (size_t i = 0; i < 4; ++i) {
-        status_t result =
-                mProducer->dequeueBuffer(&slots[i], &fence, 0, 0, 0, 0, nullptr, nullptr);
+        status_t result = mProducer->dequeueBuffer(&slots[i], &fence, 0, 0, 0,
+                                                   TEST_PRODUCER_USAGE_BITS, nullptr, nullptr);
         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result);
         ASSERT_EQ(OK, mProducer->requestBuffer(slots[i], &buffer));
     }
@@ -1059,14 +1076,22 @@
     // Get buffers in all states: dequeued, filled, acquired, free
 
     // Fill 3 buffers
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
     // Dequeue 1 buffer
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
 
     // Acquire and free 1 buffer
     ASSERT_EQ(OK, mConsumer->acquireBuffer(&item, 0));
@@ -1132,8 +1157,8 @@
     int slots[2] = {};
     ASSERT_EQ(OK, mProducer->setMaxDequeuedBufferCount(2));
     for (size_t i = 0; i < 2; ++i) {
-        status_t result =
-                mProducer->dequeueBuffer(&slots[i], &fence, 0, 0, 0, 0, nullptr, nullptr);
+        status_t result = mProducer->dequeueBuffer(&slots[i], &fence, 0, 0, 0,
+                                                   TEST_PRODUCER_USAGE_BITS, nullptr, nullptr);
         ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result);
         ASSERT_EQ(OK, mProducer->requestBuffer(slots[i], &buffer));
     }
@@ -1143,10 +1168,14 @@
 
     // Fill 2 buffers without consumer consuming them. Verify that all
     // queued buffer returns proper bufferReplaced flag
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
     ASSERT_EQ(false, output.bufferReplaced);
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
     ASSERT_EQ(true, output.bufferReplaced);
 }
@@ -1167,7 +1196,8 @@
             NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, Fence::NO_FENCE);
 
     // Dequeue, request, and queue one buffer
-    status_t result = mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr);
+    status_t result = mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS,
+                                               nullptr, nullptr);
     ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, result);
     ASSERT_EQ(OK, mProducer->requestBuffer(slot, &buffer));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
@@ -1182,7 +1212,9 @@
             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE));
 
     // Dequeue and queue the buffer again
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
 
     // Acquire and release the buffer again. Upon acquiring, the buffer handle
@@ -1194,7 +1226,9 @@
             EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE));
 
     // Dequeue and queue the buffer again
-    ASSERT_EQ(OK, mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, 0, nullptr, nullptr));
+    ASSERT_EQ(OK,
+              mProducer->dequeueBuffer(&slot, &fence, 0, 0, 0, TEST_PRODUCER_USAGE_BITS, nullptr,
+                                       nullptr));
     ASSERT_EQ(OK, mProducer->queueBuffer(slot, input, &output));
 
     // Disconnect the producer end. This should clear all of the slots and mark
diff --git a/libs/gui/tests/Constants.h b/libs/gui/tests/Constants.h
new file mode 100644
index 0000000..85c0f9f
--- /dev/null
+++ b/libs/gui/tests/Constants.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2023 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 <hardware/gralloc.h>
+
+// Arbitrary non-zero usage flag.
+constexpr uint64_t TEST_PRODUCER_USAGE_BITS = GRALLOC_USAGE_SW_READ_RARELY;
diff --git a/libs/gui/tests/CpuConsumer_test.cpp b/libs/gui/tests/CpuConsumer_test.cpp
index 0a14afa..d80bd9c 100644
--- a/libs/gui/tests/CpuConsumer_test.cpp
+++ b/libs/gui/tests/CpuConsumer_test.cpp
@@ -62,7 +62,7 @@
         const ::testing::TestInfo* const test_info =
                 ::testing::UnitTest::GetInstance()->current_test_info();
         CpuConsumerTestParams params = GetParam();
-        ALOGD("** Starting test %s (%d x %d, %d, 0x%x)",
+        ALOGD("** Starting parameterized test %s (%d x %d, %d, 0x%x)",
                 test_info->name(),
                 params.width, params.height,
                 params.maxLockedBuffers, params.format);
diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index 4ec7a06..4d5bd5b 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -821,7 +821,7 @@
     // with flag AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED
     std::unique_ptr<InputSurface> nonTouchableSurface = makeSurface(100, 100);
     nonTouchableSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    nonTouchableSurface->mInputInfo.ownerUid = 22222;
+    nonTouchableSurface->mInputInfo.ownerUid = gui::Uid{22222};
     // Overriding occlusion mode otherwise the touch would be discarded at InputDispatcher by
     // the default obscured/untrusted touch filter introduced in S.
     nonTouchableSurface->mInputInfo.touchOcclusionMode = TouchOcclusionMode::ALLOW;
@@ -842,8 +842,8 @@
     std::unique_ptr<InputSurface> nonTouchableSurface = makeSurface(100, 100);
     nonTouchableSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
     parentSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    nonTouchableSurface->mInputInfo.ownerUid = 22222;
-    parentSurface->mInputInfo.ownerUid = 22222;
+    nonTouchableSurface->mInputInfo.ownerUid = gui::Uid{22222};
+    parentSurface->mInputInfo.ownerUid = gui::Uid{22222};
     nonTouchableSurface->showAt(0, 0);
     parentSurface->showAt(100, 100);
 
@@ -866,8 +866,8 @@
     std::unique_ptr<InputSurface> nonTouchableSurface = makeSurface(100, 100);
     nonTouchableSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
     parentSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    nonTouchableSurface->mInputInfo.ownerUid = 22222;
-    parentSurface->mInputInfo.ownerUid = 22222;
+    nonTouchableSurface->mInputInfo.ownerUid = gui::Uid{22222};
+    parentSurface->mInputInfo.ownerUid = gui::Uid{22222};
     nonTouchableSurface->showAt(0, 0);
     parentSurface->showAt(50, 50);
 
@@ -886,7 +886,7 @@
     std::unique_ptr<InputSurface> bufferSurface =
             InputSurface::makeBufferInputSurface(mComposerClient, 0, 0);
     bufferSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    bufferSurface->mInputInfo.ownerUid = 22222;
+    bufferSurface->mInputInfo.ownerUid = gui::Uid{22222};
 
     surface->showAt(10, 10);
     bufferSurface->showAt(50, 50, Rect::EMPTY_RECT);
@@ -901,7 +901,7 @@
     std::unique_ptr<BlastInputSurface> bufferSurface =
             BlastInputSurface::makeBlastInputSurface(mComposerClient, 0, 0);
     bufferSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    bufferSurface->mInputInfo.ownerUid = 22222;
+    bufferSurface->mInputInfo.ownerUid = gui::Uid{22222};
 
     surface->showAt(10, 10);
     bufferSurface->showAt(50, 50, Rect::EMPTY_RECT);
@@ -948,13 +948,13 @@
 
 TEST_F(InputSurfacesTest, strict_unobscured_input_obscured_window) {
     std::unique_ptr<InputSurface> surface = makeSurface(100, 100);
-    surface->mInputInfo.ownerUid = 11111;
+    surface->mInputInfo.ownerUid = gui::Uid{11111};
     surface->doTransaction(
             [&](auto &t, auto &sc) { t.setDropInputMode(sc, gui::DropInputMode::OBSCURED); });
     surface->showAt(100, 100);
     std::unique_ptr<InputSurface> obscuringSurface = makeSurface(100, 100);
     obscuringSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    obscuringSurface->mInputInfo.ownerUid = 22222;
+    obscuringSurface->mInputInfo.ownerUid = gui::Uid{22222};
     obscuringSurface->showAt(100, 100);
     injectTap(101, 101);
     EXPECT_EQ(surface->consumeEvent(100), nullptr);
@@ -967,13 +967,13 @@
 
 TEST_F(InputSurfacesTest, strict_unobscured_input_partially_obscured_window) {
     std::unique_ptr<InputSurface> surface = makeSurface(100, 100);
-    surface->mInputInfo.ownerUid = 11111;
+    surface->mInputInfo.ownerUid = gui::Uid{11111};
     surface->doTransaction(
             [&](auto &t, auto &sc) { t.setDropInputMode(sc, gui::DropInputMode::OBSCURED); });
     surface->showAt(100, 100);
     std::unique_ptr<InputSurface> obscuringSurface = makeSurface(100, 100);
     obscuringSurface->mInputInfo.setInputConfig(WindowInfo::InputConfig::NOT_TOUCHABLE, true);
-    obscuringSurface->mInputInfo.ownerUid = 22222;
+    obscuringSurface->mInputInfo.ownerUid = gui::Uid{22222};
     obscuringSurface->showAt(190, 190);
 
     injectTap(101, 101);
diff --git a/libs/gui/tests/GLTest.cpp b/libs/gui/tests/GLTest.cpp
index 3ae4b6d..afeea42 100644
--- a/libs/gui/tests/GLTest.cpp
+++ b/libs/gui/tests/GLTest.cpp
@@ -29,10 +29,6 @@
 }
 
 void GLTest::SetUp() {
-    const ::testing::TestInfo* const testInfo =
-        ::testing::UnitTest::GetInstance()->current_test_info();
-    ALOGD("Begin test: %s.%s", testInfo->test_case_name(), testInfo->name());
-
     mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
     ASSERT_EQ(EGL_SUCCESS, eglGetError());
     ASSERT_NE(EGL_NO_DISPLAY, mEglDisplay);
@@ -132,10 +128,6 @@
         eglTerminate(mEglDisplay);
     }
     ASSERT_EQ(EGL_SUCCESS, eglGetError());
-
-    const ::testing::TestInfo* const testInfo =
-        ::testing::UnitTest::GetInstance()->current_test_info();
-    ALOGD("End test:   %s.%s", testInfo->test_case_name(), testInfo->name());
 }
 
 EGLint const* GLTest::getConfigAttribs() {
diff --git a/libs/gui/tests/IGraphicBufferProducer_test.cpp b/libs/gui/tests/IGraphicBufferProducer_test.cpp
index e6cb89c..b1f5d08 100644
--- a/libs/gui/tests/IGraphicBufferProducer_test.cpp
+++ b/libs/gui/tests/IGraphicBufferProducer_test.cpp
@@ -17,6 +17,7 @@
 #define LOG_TAG "IGraphicBufferProducer_test"
 //#define LOG_NDEBUG 0
 
+#include "Constants.h"
 #include "MockConsumer.h"
 
 #include <gtest/gtest.h>
@@ -40,7 +41,6 @@
 #define TEST_API NATIVE_WINDOW_API_CPU
 #define TEST_API_OTHER NATIVE_WINDOW_API_EGL // valid API that's not TEST_API
 #define TEST_CONTROLLED_BY_APP false
-#define TEST_PRODUCER_USAGE_BITS (0)
 
 namespace android {
 
@@ -82,11 +82,6 @@
     IGraphicBufferProducerTest() {}
 
     virtual void SetUp() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("Begin test: %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-
         mMC = new MockConsumer;
 
         switch (GetParam()) {
@@ -111,13 +106,6 @@
         ASSERT_OK(mConsumer->consumerConnect(mMC, /*controlledByApp*/ false));
     }
 
-    virtual void TearDown() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("End test:   %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-    }
-
     status_t TryConnectProducer() {
         IGraphicBufferProducer::QueueBufferOutput output;
         return mProducer->connect(TEST_TOKEN,
diff --git a/libs/gui/tests/LibGuiMain.cpp b/libs/gui/tests/LibGuiMain.cpp
new file mode 100644
index 0000000..10f7207
--- /dev/null
+++ b/libs/gui/tests/LibGuiMain.cpp
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "gtest/gtest.h"
+#include "log/log.h"
+
+namespace {
+
+class TestCaseLogger : public ::testing::EmptyTestEventListener {
+    void OnTestStart(const ::testing::TestInfo& testInfo) override {
+        ALOGD("Begin test: %s#%s", testInfo.test_suite_name(), testInfo.name());
+    }
+
+    void OnTestEnd(const testing::TestInfo& testInfo) override {
+        ALOGD("End test:   %s#%s", testInfo.test_suite_name(), testInfo.name());
+    }
+};
+
+} // namespace
+
+int main(int argc, char** argv) {
+    testing::InitGoogleTest(&argc, argv);
+    testing::UnitTest::GetInstance()->listeners().Append(new TestCaseLogger());
+    return RUN_ALL_TESTS();
+}
\ No newline at end of file
diff --git a/libs/gui/tests/Malicious.cpp b/libs/gui/tests/Malicious.cpp
index 58d7cc6..376420c 100644
--- a/libs/gui/tests/Malicious.cpp
+++ b/libs/gui/tests/Malicious.cpp
@@ -151,7 +151,6 @@
     sp<MaliciousBQP> malicious = getMaliciousBQP();
     sp<Surface> surface = new Surface(malicious);
 
-    ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false));
     ANativeWindow_Buffer buffer;
     ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr));
     ASSERT_EQ(NO_ERROR, surface->unlockAndPost());
@@ -165,7 +164,6 @@
     sp<MaliciousBQP> malicious = getMaliciousBQP();
     sp<Surface> surface = new Surface(malicious);
 
-    ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false));
     ANativeWindow_Buffer buffer;
     ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr));
     ASSERT_EQ(NO_ERROR, surface->unlockAndPost());
@@ -179,7 +177,6 @@
     sp<MaliciousBQP> malicious = getMaliciousBQP();
     sp<Surface> surface = new Surface(malicious);
 
-    ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false));
     ANativeWindow_Buffer buffer;
     ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr));
     ASSERT_EQ(NO_ERROR, surface->unlockAndPost());
@@ -193,7 +190,6 @@
     sp<MaliciousBQP> malicious = getMaliciousBQP();
     sp<Surface> surface = new Surface(malicious);
 
-    ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false));
     ANativeWindow_Buffer buffer;
     ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr));
     ASSERT_EQ(NO_ERROR, surface->unlockAndPost());
diff --git a/libs/gui/tests/StreamSplitter_test.cpp b/libs/gui/tests/StreamSplitter_test.cpp
index 2f14924..f34b03e 100644
--- a/libs/gui/tests/StreamSplitter_test.cpp
+++ b/libs/gui/tests/StreamSplitter_test.cpp
@@ -30,23 +30,7 @@
 
 namespace android {
 
-class StreamSplitterTest : public ::testing::Test {
-
-protected:
-    StreamSplitterTest() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("Begin test: %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-    }
-
-    ~StreamSplitterTest() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("End test:   %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-    }
-};
+class StreamSplitterTest : public ::testing::Test {};
 
 struct FakeListener : public BnConsumerListener {
     virtual void onFrameAvailable(const BufferItem& /* item */) {}
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index 82b6697..b28dca8 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -40,11 +40,6 @@
     }
 
     virtual void SetUp() {
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("Begin test: %s.%s", testInfo->test_case_name(),
-                testInfo->name());
-
         sp<IGraphicBufferProducer> producer;
         sp<IGraphicBufferConsumer> consumer;
         BufferQueue::createBufferQueue(&producer, &consumer);
@@ -96,11 +91,6 @@
         eglDestroyContext(mEglDisplay, mEglContext);
         eglDestroySurface(mEglDisplay, mEglSurface);
         eglTerminate(mEglDisplay);
-
-        const ::testing::TestInfo* const testInfo =
-            ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGD("End test:   %s.%s", testInfo->test_case_name(),
-                testInfo->name());
     }
 
     virtual EGLint const* getConfigAttribs() {
diff --git a/libs/gui/tests/SurfaceTextureGL.h b/libs/gui/tests/SurfaceTextureGL.h
index 53eb68c..9d8af5d 100644
--- a/libs/gui/tests/SurfaceTextureGL.h
+++ b/libs/gui/tests/SurfaceTextureGL.h
@@ -17,6 +17,7 @@
 #ifndef ANDROID_SURFACE_TEXTURE_GL_H
 #define ANDROID_SURFACE_TEXTURE_GL_H
 
+#include "Constants.h"
 #include "GLTest.h"
 
 #include "FrameWaiter.h"
@@ -43,6 +44,7 @@
                 true, false);
         mSTC = new Surface(producer);
         mANW = mSTC;
+        ASSERT_EQ(NO_ERROR, native_window_set_usage(mANW.get(), TEST_PRODUCER_USAGE_BITS));
         mTextureRenderer = new TextureRenderer(TEX_ID, mST);
         ASSERT_NO_FATAL_FAILURE(mTextureRenderer->SetUp());
         mFW = new FrameWaiter;
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 096a43c..90c0a63 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include "Constants.h"
 #include "MockConsumer.h"
 
 #include <gtest/gtest.h>
@@ -148,6 +149,7 @@
                 /*listener*/listener));
         const int BUFFER_COUNT = 4 + extraDiscardedBuffers;
         ASSERT_EQ(NO_ERROR, native_window_set_buffer_count(window.get(), BUFFER_COUNT));
+        ASSERT_EQ(NO_ERROR, native_window_set_usage(window.get(), TEST_PRODUCER_USAGE_BITS));
 
         ANativeWindowBuffer* buffers[BUFFER_COUNT];
         // Dequeue first to allocate a number of buffers
@@ -530,7 +532,8 @@
 
     ASSERT_EQ(NO_ERROR, native_window_api_connect(window.get(),
             NATIVE_WINDOW_API_CPU));
-    native_window_set_buffer_count(window.get(), 4);
+    ASSERT_EQ(NO_ERROR, native_window_set_buffer_count(window.get(), 4));
+    ASSERT_EQ(NO_ERROR, native_window_set_usage(window.get(), TEST_PRODUCER_USAGE_BITS));
 
     int fence;
     ANativeWindowBuffer* buffer;
@@ -560,6 +563,7 @@
             /*reportBufferRemoval*/true));
     const int BUFFER_COUNT = 4;
     ASSERT_EQ(NO_ERROR, native_window_set_buffer_count(window.get(), BUFFER_COUNT));
+    ASSERT_EQ(NO_ERROR, native_window_set_usage(window.get(), TEST_PRODUCER_USAGE_BITS));
 
     sp<GraphicBuffer> detachedBuffer;
     sp<Fence> outFence;
@@ -1202,7 +1206,8 @@
 
         ASSERT_EQ(NO_ERROR, native_window_api_connect(mWindow.get(),
                 NATIVE_WINDOW_API_CPU));
-        native_window_set_buffer_count(mWindow.get(), 4);
+        ASSERT_EQ(NO_ERROR, native_window_set_buffer_count(mWindow.get(), 4));
+        ASSERT_EQ(NO_ERROR, native_window_set_usage(mWindow.get(), TEST_PRODUCER_USAGE_BITS));
     }
 
     void disableFrameTimestamps() {
@@ -2068,8 +2073,9 @@
 
     sp<Surface> surface = new Surface(producer);
     sp<ANativeWindow> window(surface);
-    native_window_api_connect(window.get(), NATIVE_WINDOW_API_CPU);
-    native_window_set_buffers_dimensions(window.get(), 0, 0);
+    ASSERT_EQ(NO_ERROR, native_window_api_connect(window.get(), NATIVE_WINDOW_API_CPU));
+    ASSERT_EQ(NO_ERROR, native_window_set_buffers_dimensions(window.get(), 0, 0));
+    ASSERT_EQ(NO_ERROR, native_window_set_usage(window.get(), TEST_PRODUCER_USAGE_BITS));
 
     int fence;
     ANativeWindowBuffer* buffer;
@@ -2121,6 +2127,7 @@
     native_window_api_connect(window.get(), NATIVE_WINDOW_API_CPU);
     consumer->setTransformHint(NATIVE_WINDOW_TRANSFORM_ROT_270);
     native_window_set_buffers_dimensions(window.get(), 0, 0);
+    native_window_set_usage(window.get(), TEST_PRODUCER_USAGE_BITS);
     ASSERT_EQ(NO_ERROR, window->dequeueBuffer(window.get(), &buffer, &fence));
     EXPECT_EQ(10, buffer->width);
     EXPECT_EQ(20, buffer->height);
diff --git a/libs/gui/tests/WindowInfo_test.cpp b/libs/gui/tests/WindowInfo_test.cpp
index 11b87ef..e3a629e 100644
--- a/libs/gui/tests/WindowInfo_test.cpp
+++ b/libs/gui/tests/WindowInfo_test.cpp
@@ -62,7 +62,7 @@
     i.transform.set({0.4, -1, 100, 0.5, 0, 40, 0, 0, 1});
     i.touchOcclusionMode = TouchOcclusionMode::ALLOW;
     i.ownerPid = 19;
-    i.ownerUid = 24;
+    i.ownerUid = gui::Uid{24};
     i.packageName = "com.example.package";
     i.inputConfig = WindowInfo::InputConfig::NOT_FOCUSABLE;
     i.displayId = 34;
diff --git a/libs/input/Android.bp b/libs/input/Android.bp
index 869458c..80a8c8d 100644
--- a/libs/input/Android.bp
+++ b/libs/input/Android.bp
@@ -33,6 +33,138 @@
     ],
 }
 
+aidl_interface {
+    name: "inputconstants",
+    host_supported: true,
+    vendor_available: true,
+    unstable: true,
+    srcs: [
+        ":inputconstants_aidl",
+    ],
+
+    backend: {
+        rust: {
+            enabled: true,
+        },
+    },
+}
+
+rust_bindgen {
+    name: "libinput_bindgen",
+    host_supported: true,
+    crate_name: "input_bindgen",
+    visibility: ["//frameworks/native/services/inputflinger"],
+    wrapper_src: "InputWrapper.hpp",
+
+    include_dirs: [
+        "frameworks/native/include",
+    ],
+
+    source_stem: "bindings",
+
+    bindgen_flags: [
+        "--verbose",
+        "--allowlist-var=AMOTION_EVENT_FLAG_CANCELED",
+        "--allowlist-var=AMOTION_EVENT_ACTION_CANCEL",
+        "--allowlist-var=AMOTION_EVENT_ACTION_UP",
+        "--allowlist-var=AMOTION_EVENT_ACTION_POINTER_DOWN",
+        "--allowlist-var=AMOTION_EVENT_ACTION_DOWN",
+        "--allowlist-var=AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT",
+        "--allowlist-var=MAX_POINTER_ID",
+    ],
+
+    static_libs: [
+        "inputconstants-cpp",
+        "libui-types",
+    ],
+    shared_libs: ["libc++"],
+    header_libs: [
+        "native_headers",
+        "jni_headers",
+        "flatbuffer_headers",
+    ],
+}
+
+// Contains methods to help access C++ code from rust
+cc_library_static {
+    name: "libinput_from_rust_to_cpp",
+    cpp_std: "c++20",
+    host_supported: true,
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+    srcs: [
+        "FromRustToCpp.cpp",
+    ],
+
+    generated_headers: [
+        "cxx-bridge-header",
+    ],
+    generated_sources: ["libinput_cxx_bridge_code"],
+
+    shared_libs: [
+        "libbase",
+    ],
+}
+
+genrule {
+    name: "libinput_cxx_bridge_code",
+    tools: ["cxxbridge"],
+    cmd: "$(location cxxbridge) $(in) >> $(out)",
+    srcs: ["input_verifier.rs"],
+    out: ["inputverifier_generated.cpp"],
+}
+
+genrule {
+    name: "libinput_cxx_bridge_header",
+    tools: ["cxxbridge"],
+    cmd: "$(location cxxbridge) $(in) --header >> $(out)",
+    srcs: ["input_verifier.rs"],
+    out: ["input_verifier.rs.h"],
+}
+
+rust_defaults {
+    name: "libinput_rust_defaults",
+    srcs: ["input_verifier.rs"],
+    host_supported: true,
+    rustlibs: [
+        "libbitflags",
+        "libcxx",
+        "libinput_bindgen",
+        "liblogger",
+        "liblog_rust",
+        "inputconstants-rust",
+    ],
+
+    shared_libs: [
+        "libbase",
+        "liblog",
+    ],
+}
+
+rust_ffi_static {
+    name: "libinput_rust",
+    crate_name: "input",
+    defaults: ["libinput_rust_defaults"],
+}
+
+rust_test {
+    name: "libinput_rust_test",
+    defaults: ["libinput_rust_defaults"],
+    whole_static_libs: [
+        "libinput_from_rust_to_cpp",
+    ],
+    test_options: {
+        unit_test: true,
+    },
+    test_suites: ["device_tests"],
+    sanitize: {
+        hwaddress: true,
+    },
+}
+
 cc_library {
     name: "libinput",
     cpp_std: "c++20",
@@ -44,6 +176,7 @@
         "-Wno-unused-parameter",
     ],
     srcs: [
+        "FromRustToCpp.cpp",
         "Input.cpp",
         "InputDevice.cpp",
         "InputEventLabels.cpp",
@@ -70,9 +203,13 @@
     export_header_lib_headers: ["jni_headers"],
 
     generated_headers: [
+        "cxx-bridge-header",
+        "libinput_cxx_bridge_header",
         "toolbox_input_labels",
     ],
 
+    generated_sources: ["libinput_cxx_bridge_code"],
+
     shared_libs: [
         "libbase",
         "libcutils",
@@ -85,21 +222,36 @@
         "-Wl,--exclude-libs=libtflite_static.a",
     ],
 
+    sanitize: {
+        undefined: true,
+        all_undefined: true,
+        misc_undefined: ["integer"],
+    },
+
     static_libs: [
+        "inputconstants-cpp",
         "libui-types",
         "libtflite_static",
     ],
 
+    whole_static_libs: [
+        "libinput_rust",
+    ],
+
     export_static_lib_headers: [
         "libui-types",
     ],
 
+    export_generated_headers: [
+        "cxx-bridge-header",
+        "libinput_cxx_bridge_header",
+    ],
+
     target: {
         android: {
             srcs: [
                 "InputTransport.cpp",
                 "android/os/IInputFlinger.aidl",
-                ":inputconstants_aidl",
             ],
 
             export_shared_lib_headers: ["libbinder"],
@@ -117,10 +269,6 @@
                 "libgui_window_info_static",
             ],
 
-            sanitize: {
-                misc_undefined: ["integer"],
-            },
-
             required: [
                 "motion_predictor_model_prebuilt",
             ],
@@ -138,9 +286,6 @@
         host_linux: {
             srcs: [
                 "InputTransport.cpp",
-                "android/os/IInputConstants.aidl",
-                "android/os/IInputFlinger.aidl",
-                "android/os/InputConfig.aidl",
             ],
             static_libs: [
                 "libhostgraphics",
diff --git a/libs/input/FromRustToCpp.cpp b/libs/input/FromRustToCpp.cpp
new file mode 100644
index 0000000..e4ce62e
--- /dev/null
+++ b/libs/input/FromRustToCpp.cpp
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2023 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-base/logging.h>
+#include <ffi/FromRustToCpp.h>
+
+namespace android {
+
+bool shouldLog(rust::Str tag) {
+    return android::base::ShouldLog(android::base::LogSeverity::DEBUG, tag.data());
+}
+
+} // namespace android
diff --git a/libs/input/InputEventLabels.cpp b/libs/input/InputEventLabels.cpp
index f99a7d6..bade686 100644
--- a/libs/input/InputEventLabels.cpp
+++ b/libs/input/InputEventLabels.cpp
@@ -404,7 +404,8 @@
     DEFINE_AXIS(GESTURE_Y_OFFSET), \
     DEFINE_AXIS(GESTURE_SCROLL_X_DISTANCE), \
     DEFINE_AXIS(GESTURE_SCROLL_Y_DISTANCE), \
-    DEFINE_AXIS(GESTURE_PINCH_SCALE_FACTOR)
+    DEFINE_AXIS(GESTURE_PINCH_SCALE_FACTOR), \
+    DEFINE_AXIS(GESTURE_SWIPE_FINGER_COUNT)
 
 // NOTE: If you add new LEDs here, you must also add them to Input.h
 #define LEDS_SEQUENCE \
@@ -433,17 +434,14 @@
 // clang-format on
 
 // --- InputEventLookup ---
-const std::unordered_map<std::string, int> InputEventLookup::KEYCODES = {KEYCODES_SEQUENCE};
 
-const std::vector<InputEventLabel> InputEventLookup::KEY_NAMES = {KEYCODES_SEQUENCE};
-
-const std::unordered_map<std::string, int> InputEventLookup::AXES = {AXES_SEQUENCE};
-
-const std::vector<InputEventLabel> InputEventLookup::AXES_NAMES = {AXES_SEQUENCE};
-
-const std::unordered_map<std::string, int> InputEventLookup::LEDS = {LEDS_SEQUENCE};
-
-const std::unordered_map<std::string, int> InputEventLookup::FLAGS = {FLAGS_SEQUENCE};
+InputEventLookup::InputEventLookup()
+      : KEYCODES({KEYCODES_SEQUENCE}),
+        KEY_NAMES({KEYCODES_SEQUENCE}),
+        AXES({AXES_SEQUENCE}),
+        AXES_NAMES({AXES_SEQUENCE}),
+        LEDS({LEDS_SEQUENCE}),
+        FLAGS({FLAGS_SEQUENCE}) {}
 
 std::optional<int> InputEventLookup::lookupValueByLabel(
         const std::unordered_map<std::string, int>& map, const char* literal) {
@@ -461,30 +459,36 @@
 }
 
 std::optional<int> InputEventLookup::getKeyCodeByLabel(const char* label) {
-    return lookupValueByLabel(KEYCODES, label);
+    const auto& self = get();
+    return self.lookupValueByLabel(self.KEYCODES, label);
 }
 
 const char* InputEventLookup::getLabelByKeyCode(int32_t keyCode) {
-    if (keyCode >= 0 && static_cast<size_t>(keyCode) < KEYCODES.size()) {
-        return lookupLabelByValue(KEY_NAMES, keyCode);
+    const auto& self = get();
+    if (keyCode >= 0 && static_cast<size_t>(keyCode) < self.KEYCODES.size()) {
+        return get().lookupLabelByValue(self.KEY_NAMES, keyCode);
     }
     return nullptr;
 }
 
 std::optional<int> InputEventLookup::getKeyFlagByLabel(const char* label) {
-    return lookupValueByLabel(FLAGS, label);
+    const auto& self = get();
+    return lookupValueByLabel(self.FLAGS, label);
 }
 
 std::optional<int> InputEventLookup::getAxisByLabel(const char* label) {
-    return lookupValueByLabel(AXES, label);
+    const auto& self = get();
+    return lookupValueByLabel(self.AXES, label);
 }
 
 const char* InputEventLookup::getAxisLabel(int32_t axisId) {
-    return lookupLabelByValue(AXES_NAMES, axisId);
+    const auto& self = get();
+    return lookupLabelByValue(self.AXES_NAMES, axisId);
 }
 
 std::optional<int> InputEventLookup::getLedByLabel(const char* label) {
-    return lookupValueByLabel(LEDS, label);
+    const auto& self = get();
+    return lookupValueByLabel(self.LEDS, label);
 }
 
 namespace {
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp
index f6b4648..4d3d8bc 100644
--- a/libs/input/InputTransport.cpp
+++ b/libs/input/InputTransport.cpp
@@ -4,6 +4,7 @@
 // Provides a shared memory transport for input events.
 //
 #define LOG_TAG "InputTransport"
+#define ATRACE_TAG ATRACE_TAG_INPUT
 
 #include <errno.h>
 #include <fcntl.h>
@@ -13,6 +14,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <binder/Parcel.h>
@@ -80,6 +82,7 @@
 
 } // namespace
 
+using android::base::Result;
 using android::base::StringPrintf;
 
 namespace android {
@@ -449,6 +452,13 @@
 
     ALOGD_IF(DEBUG_CHANNEL_MESSAGES, "channel '%s' ~ sent message of type %s", mName.c_str(),
              ftl::enum_string(msg->header.type).c_str());
+
+    if (ATRACE_ENABLED()) {
+        std::string message =
+                StringPrintf("sendMessage(inputChannel=%s, seq=0x%" PRIx32 ", type=0x%" PRIx32 ")",
+                             mName.c_str(), msg->header.seq, msg->header.type);
+        ATRACE_NAME(message.c_str());
+    }
     return OK;
 }
 
@@ -484,6 +494,13 @@
 
     ALOGD_IF(DEBUG_CHANNEL_MESSAGES, "channel '%s' ~ received message of type %s", mName.c_str(),
              ftl::enum_string(msg->header.type).c_str());
+
+    if (ATRACE_ENABLED()) {
+        std::string message = StringPrintf("receiveMessage(inputChannel=%s, seq=0x%" PRIx32
+                                           ", type=0x%" PRIx32 ")",
+                                           mName.c_str(), msg->header.seq, msg->header.type);
+        ATRACE_NAME(message.c_str());
+    }
     return OK;
 }
 
@@ -606,8 +623,12 @@
         ATRACE_NAME(message.c_str());
     }
     if (verifyEvents()) {
-        mInputVerifier.processMovement(deviceId, action, pointerCount, pointerProperties,
-                                       pointerCoords, flags);
+        Result<void> result =
+                mInputVerifier.processMovement(deviceId, action, pointerCount, pointerProperties,
+                                               pointerCoords, flags);
+        if (!result.ok()) {
+            LOG(FATAL) << "Bad stream: " << result.error();
+        }
     }
     if (debugTransportPublisher()) {
         std::string transformString;
diff --git a/libs/input/InputVerifier.cpp b/libs/input/InputVerifier.cpp
index eb75804..32b4ca0 100644
--- a/libs/input/InputVerifier.cpp
+++ b/libs/input/InputVerifier.cpp
@@ -18,111 +18,35 @@
 
 #include <android-base/logging.h>
 #include <input/InputVerifier.h>
+#include "input_verifier.rs.h"
+
+using android::base::Error;
+using android::base::Result;
+using android::input::RustPointerProperties;
 
 namespace android {
 
-/**
- * Log all of the movements that are sent to this verifier. Helps to identify the streams that lead
- * to inconsistent events.
- * Enable this via "adb shell setprop log.tag.InputVerifierLogEvents DEBUG"
- */
-static bool logEvents() {
-    return __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "LogEvents", ANDROID_LOG_INFO);
-}
-
 // --- InputVerifier ---
 
-InputVerifier::InputVerifier(const std::string& name) : mName(name){};
+InputVerifier::InputVerifier(const std::string& name)
+      : mVerifier(android::input::verifier::create(name)){};
 
-void InputVerifier::processMovement(int32_t deviceId, int32_t action, uint32_t pointerCount,
-                                    const PointerProperties* pointerProperties,
-                                    const PointerCoords* pointerCoords, int32_t flags) {
-    if (logEvents()) {
-        LOG(ERROR) << "Processing " << MotionEvent::actionToString(action) << " for device "
-                   << deviceId << " (" << pointerCount << " pointer"
-                   << (pointerCount == 1 ? "" : "s") << ") on " << mName;
+Result<void> InputVerifier::processMovement(int32_t deviceId, int32_t action, uint32_t pointerCount,
+                                            const PointerProperties* pointerProperties,
+                                            const PointerCoords* pointerCoords, int32_t flags) {
+    std::vector<RustPointerProperties> rpp;
+    for (size_t i = 0; i < pointerCount; i++) {
+        rpp.emplace_back(RustPointerProperties{.id = pointerProperties[i].id});
     }
-
-    switch (MotionEvent::getActionMasked(action)) {
-        case AMOTION_EVENT_ACTION_DOWN: {
-            auto [it, inserted] = mTouchingPointerIdsByDevice.insert({deviceId, {}});
-            if (!inserted) {
-                LOG(FATAL) << "Got ACTION_DOWN, but already have touching pointers " << it->second
-                           << " for device " << deviceId << " on " << mName;
-            }
-            it->second.set(pointerProperties[0].id);
-            break;
-        }
-        case AMOTION_EVENT_ACTION_POINTER_DOWN: {
-            auto it = mTouchingPointerIdsByDevice.find(deviceId);
-            if (it == mTouchingPointerIdsByDevice.end()) {
-                LOG(FATAL) << "Got POINTER_DOWN, but no touching pointers for device " << deviceId
-                           << " on " << mName;
-            }
-            it->second.set(pointerProperties[MotionEvent::getActionIndex(action)].id);
-            break;
-        }
-        case AMOTION_EVENT_ACTION_MOVE: {
-            ensureTouchingPointersMatch(deviceId, pointerCount, pointerProperties, "MOVE");
-            break;
-        }
-        case AMOTION_EVENT_ACTION_POINTER_UP: {
-            auto it = mTouchingPointerIdsByDevice.find(deviceId);
-            if (it == mTouchingPointerIdsByDevice.end()) {
-                LOG(FATAL) << "Got POINTER_UP, but no touching pointers for device " << deviceId
-                           << " on " << mName;
-            }
-            it->second.reset(pointerProperties[MotionEvent::getActionIndex(action)].id);
-            break;
-        }
-        case AMOTION_EVENT_ACTION_UP: {
-            auto it = mTouchingPointerIdsByDevice.find(deviceId);
-            if (it == mTouchingPointerIdsByDevice.end()) {
-                LOG(FATAL) << "Got ACTION_UP, but no record for deviceId " << deviceId << " on "
-                           << mName;
-            }
-            const auto& [_, touchingPointerIds] = *it;
-            if (touchingPointerIds.count() != 1) {
-                LOG(FATAL) << "Got ACTION_UP, but we have pointers: " << touchingPointerIds
-                           << " for deviceId " << deviceId << " on " << mName;
-            }
-            const int32_t pointerId = pointerProperties[0].id;
-            if (!touchingPointerIds.test(pointerId)) {
-                LOG(FATAL) << "Got ACTION_UP, but pointerId " << pointerId
-                           << " is not touching. Touching pointers: " << touchingPointerIds
-                           << " for deviceId " << deviceId << " on " << mName;
-            }
-            mTouchingPointerIdsByDevice.erase(it);
-            break;
-        }
-        case AMOTION_EVENT_ACTION_CANCEL: {
-            if ((flags & AMOTION_EVENT_FLAG_CANCELED) != AMOTION_EVENT_FLAG_CANCELED) {
-                LOG(FATAL) << "For ACTION_CANCEL, must set FLAG_CANCELED";
-            }
-            ensureTouchingPointersMatch(deviceId, pointerCount, pointerProperties, "CANCEL");
-            mTouchingPointerIdsByDevice.erase(deviceId);
-            break;
-        }
+    rust::Slice<const RustPointerProperties> properties{rpp.data(), rpp.size()};
+    rust::String errorMessage =
+            android::input::verifier::process_movement(*mVerifier, deviceId, action, properties,
+                                                       flags);
+    if (errorMessage.empty()) {
+        return {};
+    } else {
+        return Error() << errorMessage;
     }
 }
 
-void InputVerifier::ensureTouchingPointersMatch(int32_t deviceId, uint32_t pointerCount,
-                                                const PointerProperties* pointerProperties,
-                                                const char* action) const {
-    auto it = mTouchingPointerIdsByDevice.find(deviceId);
-    if (it == mTouchingPointerIdsByDevice.end()) {
-        LOG(FATAL) << "Got " << action << ", but no touching pointers for device " << deviceId
-                   << " on " << mName;
-    }
-    const auto& [_, touchingPointerIds] = *it;
-    for (size_t i = 0; i < pointerCount; i++) {
-        const int32_t pointerId = pointerProperties[i].id;
-        if (!touchingPointerIds.test(pointerId)) {
-            LOG(FATAL) << "Got " << action << " for pointerId " << pointerId
-                       << " but the touching pointers are " << touchingPointerIds << " on "
-                       << mName;
-        }
-    }
-};
-
 } // namespace android
diff --git a/libs/input/InputWrapper.hpp b/libs/input/InputWrapper.hpp
new file mode 100644
index 0000000..a01080d
--- /dev/null
+++ b/libs/input/InputWrapper.hpp
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2023 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/input.h>
+#include "input/Input.h"
diff --git a/libs/input/ffi/FromRustToCpp.h b/libs/input/ffi/FromRustToCpp.h
new file mode 100644
index 0000000..889945c
--- /dev/null
+++ b/libs/input/ffi/FromRustToCpp.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2023 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 "rust/cxx.h"
+
+namespace android {
+
+bool shouldLog(rust::Str tag);
+
+} // namespace android
diff --git a/libs/input/input_verifier.rs b/libs/input/input_verifier.rs
new file mode 100644
index 0000000..2e05a63
--- /dev/null
+++ b/libs/input/input_verifier.rs
@@ -0,0 +1,421 @@
+/*
+ * Copyright 2023 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.
+ */
+
+//! Validate the incoming motion stream.
+//! This class is not thread-safe.
+//! State is stored in the "InputVerifier" object
+//! that can be created via the 'create' method.
+//! Usage:
+//! Box<InputVerifier> verifier = create("inputChannel name");
+//! result = process_movement(verifier, ...);
+//! if (result) {
+//!    crash(result.error_message());
+//! }
+
+use std::collections::HashMap;
+use std::collections::HashSet;
+
+use bitflags::bitflags;
+use log::info;
+
+#[cxx::bridge(namespace = "android::input")]
+mod ffi {
+    #[namespace = "android"]
+    unsafe extern "C++" {
+        include!("ffi/FromRustToCpp.h");
+        fn shouldLog(tag: &str) -> bool;
+    }
+    #[namespace = "android::input::verifier"]
+    extern "Rust" {
+        type InputVerifier;
+
+        fn create(name: String) -> Box<InputVerifier>;
+        fn process_movement(
+            verifier: &mut InputVerifier,
+            device_id: i32,
+            action: u32,
+            pointer_properties: &[RustPointerProperties],
+            flags: i32,
+        ) -> String;
+    }
+
+    pub struct RustPointerProperties {
+        id: i32,
+    }
+}
+
+use crate::ffi::shouldLog;
+use crate::ffi::RustPointerProperties;
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
+struct DeviceId(i32);
+
+fn process_movement(
+    verifier: &mut InputVerifier,
+    device_id: i32,
+    action: u32,
+    pointer_properties: &[RustPointerProperties],
+    flags: i32,
+) -> String {
+    let result = verifier.process_movement(
+        DeviceId(device_id),
+        action,
+        pointer_properties,
+        Flags::from_bits(flags).unwrap(),
+    );
+    match result {
+        Ok(()) => "".to_string(),
+        Err(e) => e,
+    }
+}
+
+fn create(name: String) -> Box<InputVerifier> {
+    Box::new(InputVerifier::new(&name))
+}
+
+#[repr(u32)]
+enum MotionAction {
+    Down = input_bindgen::AMOTION_EVENT_ACTION_DOWN,
+    Up = input_bindgen::AMOTION_EVENT_ACTION_UP,
+    Move = input_bindgen::AMOTION_EVENT_ACTION_MOVE,
+    Cancel = input_bindgen::AMOTION_EVENT_ACTION_CANCEL,
+    Outside = input_bindgen::AMOTION_EVENT_ACTION_OUTSIDE,
+    PointerDown { action_index: usize } = input_bindgen::AMOTION_EVENT_ACTION_POINTER_DOWN,
+    PointerUp { action_index: usize } = input_bindgen::AMOTION_EVENT_ACTION_POINTER_UP,
+    HoverEnter = input_bindgen::AMOTION_EVENT_ACTION_HOVER_ENTER,
+    HoverMove = input_bindgen::AMOTION_EVENT_ACTION_HOVER_MOVE,
+    HoverExit = input_bindgen::AMOTION_EVENT_ACTION_HOVER_EXIT,
+    Scroll = input_bindgen::AMOTION_EVENT_ACTION_SCROLL,
+    ButtonPress = input_bindgen::AMOTION_EVENT_ACTION_BUTTON_PRESS,
+    ButtonRelease = input_bindgen::AMOTION_EVENT_ACTION_BUTTON_RELEASE,
+}
+
+fn get_action_index(action: u32) -> usize {
+    let index = (action & input_bindgen::AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
+        >> input_bindgen::AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
+    index.try_into().unwrap()
+}
+
+impl From<u32> for MotionAction {
+    fn from(action: u32) -> Self {
+        let action_masked = action & input_bindgen::AMOTION_EVENT_ACTION_MASK;
+        let action_index = get_action_index(action);
+        match action_masked {
+            input_bindgen::AMOTION_EVENT_ACTION_DOWN => MotionAction::Down,
+            input_bindgen::AMOTION_EVENT_ACTION_UP => MotionAction::Up,
+            input_bindgen::AMOTION_EVENT_ACTION_MOVE => MotionAction::Move,
+            input_bindgen::AMOTION_EVENT_ACTION_CANCEL => MotionAction::Cancel,
+            input_bindgen::AMOTION_EVENT_ACTION_OUTSIDE => MotionAction::Outside,
+            input_bindgen::AMOTION_EVENT_ACTION_POINTER_DOWN => {
+                MotionAction::PointerDown { action_index }
+            }
+            input_bindgen::AMOTION_EVENT_ACTION_POINTER_UP => {
+                MotionAction::PointerUp { action_index }
+            }
+            input_bindgen::AMOTION_EVENT_ACTION_HOVER_ENTER => MotionAction::HoverEnter,
+            input_bindgen::AMOTION_EVENT_ACTION_HOVER_MOVE => MotionAction::HoverMove,
+            input_bindgen::AMOTION_EVENT_ACTION_HOVER_EXIT => MotionAction::HoverExit,
+            input_bindgen::AMOTION_EVENT_ACTION_SCROLL => MotionAction::Scroll,
+            input_bindgen::AMOTION_EVENT_ACTION_BUTTON_PRESS => MotionAction::ButtonPress,
+            input_bindgen::AMOTION_EVENT_ACTION_BUTTON_RELEASE => MotionAction::ButtonRelease,
+            _ => panic!("Unknown action: {}", action),
+        }
+    }
+}
+
+bitflags! {
+    struct Flags: i32 {
+        const CANCELED = input_bindgen::AMOTION_EVENT_FLAG_CANCELED;
+    }
+}
+
+fn motion_action_to_string(action: u32) -> String {
+    match action.into() {
+        MotionAction::Down => "DOWN".to_string(),
+        MotionAction::Up => "UP".to_string(),
+        MotionAction::Move => "MOVE".to_string(),
+        MotionAction::Cancel => "CANCEL".to_string(),
+        MotionAction::Outside => "OUTSIDE".to_string(),
+        MotionAction::PointerDown { action_index } => {
+            format!("POINTER_DOWN({})", action_index)
+        }
+        MotionAction::PointerUp { action_index } => {
+            format!("POINTER_UP({})", action_index)
+        }
+        MotionAction::HoverMove => "HOVER_MOVE".to_string(),
+        MotionAction::Scroll => "SCROLL".to_string(),
+        MotionAction::HoverEnter => "HOVER_ENTER".to_string(),
+        MotionAction::HoverExit => "HOVER_EXIT".to_string(),
+        MotionAction::ButtonPress => "BUTTON_PRESS".to_string(),
+        MotionAction::ButtonRelease => "BUTTON_RELEASE".to_string(),
+    }
+}
+
+/**
+ * Log all of the movements that are sent to this verifier. Helps to identify the streams that lead
+ * to inconsistent events.
+ * Enable this via "adb shell setprop log.tag.InputVerifierLogEvents DEBUG"
+ */
+fn log_events() -> bool {
+    shouldLog("InputVerifierLogEvents")
+}
+
+struct InputVerifier {
+    name: String,
+    touching_pointer_ids_by_device: HashMap<DeviceId, HashSet<i32>>,
+}
+
+impl InputVerifier {
+    fn new(name: &str) -> Self {
+        logger::init(
+            logger::Config::default()
+                .with_tag_on_device("InputVerifier")
+                .with_min_level(log::Level::Trace),
+        );
+        Self { name: name.to_owned(), touching_pointer_ids_by_device: HashMap::new() }
+    }
+
+    fn process_movement(
+        &mut self,
+        device_id: DeviceId,
+        action: u32,
+        pointer_properties: &[RustPointerProperties],
+        flags: Flags,
+    ) -> Result<(), String> {
+        if log_events() {
+            info!(
+                "Processing {} for device {:?} ({} pointer{}) on {}",
+                motion_action_to_string(action),
+                device_id,
+                pointer_properties.len(),
+                if pointer_properties.len() == 1 { "" } else { "s" },
+                self.name
+            );
+        }
+
+        match action.into() {
+            MotionAction::Down => {
+                let it = self
+                    .touching_pointer_ids_by_device
+                    .entry(device_id)
+                    .or_insert_with(HashSet::new);
+                let pointer_id = pointer_properties[0].id;
+                if it.contains(&pointer_id) {
+                    return Err(format!(
+                        "{}: Invalid DOWN event - pointers already down for device {:?}: {:?}",
+                        self.name, device_id, it
+                    ));
+                }
+                it.insert(pointer_id);
+            }
+            MotionAction::PointerDown { action_index } => {
+                if !self.touching_pointer_ids_by_device.contains_key(&device_id) {
+                    return Err(format!(
+                        "{}: Received POINTER_DOWN but no pointers are currently down \
+                        for device {:?}",
+                        self.name, device_id
+                    ));
+                }
+                let it = self.touching_pointer_ids_by_device.get_mut(&device_id).unwrap();
+                let pointer_id = pointer_properties[action_index].id;
+                if it.contains(&pointer_id) {
+                    return Err(format!(
+                        "{}: Pointer with id={} not found in the properties",
+                        self.name, pointer_id
+                    ));
+                }
+                it.insert(pointer_id);
+            }
+            MotionAction::Move => {
+                if !self.ensure_touching_pointers_match(device_id, pointer_properties) {
+                    return Err(format!(
+                        "{}: ACTION_MOVE touching pointers don't match",
+                        self.name
+                    ));
+                }
+            }
+            MotionAction::PointerUp { action_index } => {
+                if !self.touching_pointer_ids_by_device.contains_key(&device_id) {
+                    return Err(format!(
+                        "{}: Received POINTER_UP but no pointers are currently down for device \
+                        {:?}",
+                        self.name, device_id
+                    ));
+                }
+                let it = self.touching_pointer_ids_by_device.get_mut(&device_id).unwrap();
+                let pointer_id = pointer_properties[action_index].id;
+                it.remove(&pointer_id);
+            }
+            MotionAction::Up => {
+                if !self.touching_pointer_ids_by_device.contains_key(&device_id) {
+                    return Err(format!(
+                        "{} Received ACTION_UP but no pointers are currently down for device {:?}",
+                        self.name, device_id
+                    ));
+                }
+                let it = self.touching_pointer_ids_by_device.get_mut(&device_id).unwrap();
+                if it.len() != 1 {
+                    return Err(format!(
+                        "{}: Got ACTION_UP, but we have pointers: {:?} for device {:?}",
+                        self.name, it, device_id
+                    ));
+                }
+                let pointer_id = pointer_properties[0].id;
+                if !it.contains(&pointer_id) {
+                    return Err(format!(
+                        "{}: Got ACTION_UP, but pointerId {} is not touching. Touching pointers:\
+                        {:?} for device {:?}",
+                        self.name, pointer_id, it, device_id
+                    ));
+                }
+                it.clear();
+            }
+            MotionAction::Cancel => {
+                if flags.contains(Flags::CANCELED) {
+                    return Err(format!(
+                        "{}: For ACTION_CANCEL, must set FLAG_CANCELED",
+                        self.name
+                    ));
+                }
+                if !self.ensure_touching_pointers_match(device_id, pointer_properties) {
+                    return Err(format!(
+                        "{}: Got ACTION_CANCEL, but the pointers don't match. \
+                        Existing pointers: {:?}",
+                        self.name, self.touching_pointer_ids_by_device
+                    ));
+                }
+                self.touching_pointer_ids_by_device.remove(&device_id);
+            }
+            _ => return Ok(()),
+        }
+        Ok(())
+    }
+
+    fn ensure_touching_pointers_match(
+        &self,
+        device_id: DeviceId,
+        pointer_properties: &[RustPointerProperties],
+    ) -> bool {
+        let Some(pointers) = self.touching_pointer_ids_by_device.get(&device_id) else {
+            return false;
+        };
+
+        for pointer_property in pointer_properties.iter() {
+            let pointer_id = pointer_property.id;
+            if !pointers.contains(&pointer_id) {
+                return false;
+            }
+        }
+        true
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::DeviceId;
+    use crate::Flags;
+    use crate::InputVerifier;
+    use crate::RustPointerProperties;
+    #[test]
+    fn single_pointer_stream() {
+        let mut verifier = InputVerifier::new("Test");
+        let pointer_properties = Vec::from([RustPointerProperties { id: 0 }]);
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_DOWN,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_MOVE,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_UP,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+    }
+
+    #[test]
+    fn multi_device_stream() {
+        let mut verifier = InputVerifier::new("Test");
+        let pointer_properties = Vec::from([RustPointerProperties { id: 0 }]);
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_DOWN,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_MOVE,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+        assert!(verifier
+            .process_movement(
+                DeviceId(2),
+                input_bindgen::AMOTION_EVENT_ACTION_DOWN,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+        assert!(verifier
+            .process_movement(
+                DeviceId(2),
+                input_bindgen::AMOTION_EVENT_ACTION_MOVE,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_UP,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_ok());
+    }
+
+    #[test]
+    fn test_invalid_up() {
+        let mut verifier = InputVerifier::new("Test");
+        let pointer_properties = Vec::from([RustPointerProperties { id: 0 }]);
+        assert!(verifier
+            .process_movement(
+                DeviceId(1),
+                input_bindgen::AMOTION_EVENT_ACTION_UP,
+                &pointer_properties,
+                Flags::empty(),
+            )
+            .is_err());
+    }
+}
diff --git a/libs/input/tests/Android.bp b/libs/input/tests/Android.bp
index 42bdf57..6aae25d 100644
--- a/libs/input/tests/Android.bp
+++ b/libs/input/tests/Android.bp
@@ -44,12 +44,20 @@
         "-Wno-unused-parameter",
     ],
     sanitize: {
+        hwaddress: true,
         undefined: true,
         all_undefined: true,
         diag: {
             undefined: true,
         },
     },
+    target: {
+        host: {
+            sanitize: {
+                address: true,
+            },
+        },
+    },
     shared_libs: [
         "libbase",
         "libbinder",
diff --git a/libs/nativewindow/include/android/hardware_buffer_aidl.h b/libs/nativewindow/include/android/hardware_buffer_aidl.h
index 1659d54..e269f0d 100644
--- a/libs/nativewindow/include/android/hardware_buffer_aidl.h
+++ b/libs/nativewindow/include/android/hardware_buffer_aidl.h
@@ -34,6 +34,10 @@
 #include <android/hardware_buffer.h>
 #include <sys/cdefs.h>
 
+#ifdef __cplusplus
+#include <string>
+#endif
+
 __BEGIN_DECLS
 
 /**
@@ -142,6 +146,15 @@
         return ret;
     }
 
+    inline std::string toString() const {
+        if (!mBuffer) {
+            return "<HardwareBuffer: Invalid>";
+        }
+        uint64_t id = 0;
+        AHardwareBuffer_getId(mBuffer, &id);
+        return "<HardwareBuffer " + std::to_string(id) + ">";
+    }
+
 private:
     HardwareBuffer(const HardwareBuffer& other) = delete;
     HardwareBuffer& operator=(const HardwareBuffer& other) = delete;
diff --git a/libs/nativewindow/include/system/window.h b/libs/nativewindow/include/system/window.h
index 0fee3c1..edaa422 100644
--- a/libs/nativewindow/include/system/window.h
+++ b/libs/nativewindow/include/system/window.h
@@ -1066,12 +1066,33 @@
                            (int)compatibility, (int)changeFrameRateStrategy);
 }
 
+struct ANativeWindowFrameTimelineInfo {
+    // Frame Id received from ANativeWindow_getNextFrameId.
+    uint64_t frameNumber;
+
+    // VsyncId received from the Choreographer callback that started this frame.
+    int64_t frameTimelineVsyncId;
+
+    // Input Event ID received from the input event that started this frame.
+    int32_t inputEventId;
+
+    // The time which this frame rendering started (i.e. when Choreographer callback actually run)
+    int64_t startTimeNanos;
+
+    // Whether or not to use the vsyncId to determine the refresh rate. Used for TextureView only.
+    int32_t useForRefreshRateSelection;
+
+    // The VsyncId of a frame that was not drawn and squashed into this frame.
+    // Used for UI thread updates that were not picked up by RenderThread on time.
+    int64_t skippedFrameVsyncId;
+
+    // The start time of a frame that was not drawn and squashed into this frame.
+    int64_t skippedFrameStartTimeNanos;
+};
+
 static inline int native_window_set_frame_timeline_info(
-        struct ANativeWindow* window, uint64_t frameNumber, int64_t frameTimelineVsyncId,
-        int32_t inputEventId, int64_t startTimeNanos, int32_t useForRefreshRateSelection) {
-    return window->perform(window, NATIVE_WINDOW_SET_FRAME_TIMELINE_INFO, frameNumber,
-                           frameTimelineVsyncId, inputEventId, startTimeNanos,
-                           useForRefreshRateSelection);
+        struct ANativeWindow* window, struct ANativeWindowFrameTimelineInfo frameTimelineInfo) {
+    return window->perform(window, NATIVE_WINDOW_SET_FRAME_TIMELINE_INFO, frameTimelineInfo);
 }
 
 // ------------------------------------------------------------------------------------------------
diff --git a/services/surfaceflinger/Display/DisplayMap.h b/libs/ui/include/ui/DisplayMap.h
similarity index 94%
rename from services/surfaceflinger/Display/DisplayMap.h
rename to libs/ui/include/ui/DisplayMap.h
index 0d59706..7eacb0a 100644
--- a/services/surfaceflinger/Display/DisplayMap.h
+++ b/libs/ui/include/ui/DisplayMap.h
@@ -19,7 +19,7 @@
 #include <ftl/small_map.h>
 #include <ftl/small_vector.h>
 
-namespace android::display {
+namespace android::ui {
 
 // The static capacities were chosen to exceed a typical number of physical and/or virtual displays.
 
@@ -32,4 +32,4 @@
 template <typename T>
 using PhysicalDisplayVector = ftl::SmallVector<T, 3>;
 
-} // namespace android::display
+} // namespace android::ui
diff --git a/libs/ui/include/ui/FenceTime.h b/libs/ui/include/ui/FenceTime.h
index ac75f43..334106f 100644
--- a/libs/ui/include/ui/FenceTime.h
+++ b/libs/ui/include/ui/FenceTime.h
@@ -142,6 +142,8 @@
     std::atomic<nsecs_t> mSignalTime{Fence::SIGNAL_TIME_INVALID};
 };
 
+using FenceTimePtr = std::shared_ptr<FenceTime>;
+
 // A queue of FenceTimes that are expected to signal in FIFO order.
 // Only maintains a queue of weak pointers so it doesn't keep references
 // to Fences on its own.
@@ -190,8 +192,15 @@
 // before the new one is added.
 class FenceToFenceTimeMap {
 public:
-    // Create a new FenceTime with that wraps the provided Fence.
-    std::shared_ptr<FenceTime> createFenceTimeForTest(const sp<Fence>& fence);
+    using FencePair = std::pair<sp<Fence>, FenceTimePtr>;
+
+    FencePair makePendingFenceForTest() {
+        const auto fence = sp<Fence>::make();
+        return {fence, createFenceTimeForTest(fence)};
+    }
+
+    // Create a new FenceTime that wraps the provided Fence.
+    FenceTimePtr createFenceTimeForTest(const sp<Fence>&);
 
     // Signals all FenceTimes created through this class that are wrappers
     // around |fence|.
@@ -205,7 +214,6 @@
     std::unordered_map<Fence*, std::vector<std::weak_ptr<FenceTime>>> mMap;
 };
 
-
-}; // namespace android
+} // namespace android
 
 #endif // ANDROID_FENCE_TIME_H
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index 2c3ce16..b4fc5f0 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -137,21 +137,28 @@
 #endif
 #endif
 
-static const char* DRIVER_SUFFIX_PROPERTY = "ro.hardware.egl";
+static const char* PERSIST_DRIVER_SUFFIX_PROPERTY = "persist.graphics.egl";
+static const char* RO_DRIVER_SUFFIX_PROPERTY = "ro.hardware.egl";
+static const char* RO_BOARD_PLATFORM_PROPERTY = "ro.board.platform";
 
 static const char* HAL_SUBNAME_KEY_PROPERTIES[3] = {
-        "persist.graphics.egl",
-        DRIVER_SUFFIX_PROPERTY,
-        "ro.board.platform",
+        PERSIST_DRIVER_SUFFIX_PROPERTY,
+        RO_DRIVER_SUFFIX_PROPERTY,
+        RO_BOARD_PLATFORM_PROPERTY,
 };
 
+// Check whether the loaded system drivers should be unloaded in order to
+// load ANGLE or the updatable graphics drivers.
+// If ANGLE namespace is set, it means the application is identified to run on top of ANGLE.
+// If updatable graphics driver namespace is set, it means the application is identified to
+// run on top of updatable graphics drivers.
 static bool should_unload_system_driver(egl_connection_t* cnx) {
     // Return false if the system driver has been unloaded once.
     if (cnx->systemDriverUnloaded) {
         return false;
     }
 
-    // Return true if Angle namespace is set.
+    // Return true if ANGLE namespace is set.
     android_namespace_t* ns = android::GraphicsEnv::getInstance().getAngleNamespace();
     if (ns) {
         return true;
@@ -245,17 +252,20 @@
                 continue;
             }
             hnd = attempt_to_load_system_driver(cnx, prop.c_str(), true);
-            if (hnd) {
-                break;
-            } else if (strcmp(key, DRIVER_SUFFIX_PROPERTY) == 0) {
+            if (!hnd) {
+                ALOGD("Failed to load drivers from property %s with value %s", key, prop.c_str());
                 failToLoadFromDriverSuffixProperty = true;
             }
+
+            // Abort regardless of whether subsequent properties are set, the value must be set
+            // correctly with the first property that has a value.
+            break;
         }
     }
 
     if (!hnd) {
-        // Can't find graphics driver by appending system properties, now search for the exact name
-        // without any suffix of the GLES userspace driver in both locations.
+        // Can't find graphics driver by appending the value from system properties, now search for
+        // the exact name without any suffix of the GLES userspace driver in both locations.
         // i.e.:
         //      libGLES.so, or:
         //      libEGL.so, libGLESv1_CM.so, libGLESv2.so
@@ -274,10 +284,10 @@
                                                             false, systemTime() - openTime);
     } else {
         // init_angle_backend will check if loaded driver is ANGLE or not,
-        // will set cnx->useAngle appropriately.
+        // will set cnx->angleLoaded appropriately.
         // Do this here so that we use ANGLE path when driver is ANGLE (e.g. loaded as native),
         // not just loading ANGLE as option.
-        init_angle_backend(hnd->dso[2], cnx);
+        attempt_to_init_angle_backend(hnd->dso[2], cnx);
     }
 
     LOG_ALWAYS_FATAL_IF(!hnd,
@@ -319,7 +329,7 @@
     delete hnd;
     cnx->dso = nullptr;
 
-    cnx->useAngle = false;
+    cnx->angleLoaded = false;
 }
 
 void Loader::init_api(void* dso,
@@ -560,14 +570,14 @@
     return hnd;
 }
 
-void Loader::init_angle_backend(void* dso, egl_connection_t* cnx) {
+void Loader::attempt_to_init_angle_backend(void* dso, egl_connection_t* cnx) {
     void* pANGLEGetDisplayPlatform = dlsym(dso, "ANGLEGetDisplayPlatform");
     if (pANGLEGetDisplayPlatform) {
-        ALOGV("ANGLE GLES library in use");
-        cnx->useAngle = true;
+        ALOGV("ANGLE GLES library loaded");
+        cnx->angleLoaded = true;
     } else {
-        ALOGV("Native GLES library in use");
-        cnx->useAngle = false;
+        ALOGV("Native GLES library loaded");
+        cnx->angleLoaded = false;
     }
 }
 
diff --git a/opengl/libs/EGL/Loader.h b/opengl/libs/EGL/Loader.h
index 81742ab..cadbd46 100644
--- a/opengl/libs/EGL/Loader.h
+++ b/opengl/libs/EGL/Loader.h
@@ -57,7 +57,7 @@
     driver_t* attempt_to_load_system_driver(egl_connection_t* cnx, const char* suffix, const bool exact);
     void unload_system_driver(egl_connection_t* cnx);
     void initialize_api(void* dso, egl_connection_t* cnx, uint32_t mask);
-    void init_angle_backend(void* dso, egl_connection_t* cnx);
+    void attempt_to_init_angle_backend(void* dso, egl_connection_t* cnx);
 
     static __attribute__((noinline)) void init_api(void* dso, const char* const* api,
                                                    const char* const* ref_api,
diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp
index 525fed1..3317347 100644
--- a/opengl/libs/EGL/egl_display.cpp
+++ b/opengl/libs/EGL/egl_display.cpp
@@ -191,7 +191,7 @@
     if (cnx->dso) {
         EGLDisplay dpy = EGL_NO_DISPLAY;
 
-        if (cnx->useAngle) {
+        if (cnx->angleLoaded) {
             EGLint error;
             dpy = getPlatformDisplayAngle(display, cnx, attrib_list, &error);
             if (error != EGL_NONE) {
@@ -324,7 +324,7 @@
 
         // b/269060366 Conditionally enabled EGL_ANDROID_get_frame_timestamps extension if the
         // device's present timestamps are reliable (which may not be the case on emulators).
-        if (cnx->useAngle) {
+        if (cnx->angleLoaded) {
             if (android::base::GetBoolProperty("service.sf.present_timestamp", false)) {
                 mExtensionString.append("EGL_ANDROID_get_frame_timestamps ");
             }
@@ -432,7 +432,7 @@
         egl_connection_t* const cnx = &gEGLImpl;
         if (cnx->dso && disp.state == egl_display_t::INITIALIZED) {
             // If we're using ANGLE reset any custom DisplayPlatform
-            if (cnx->useAngle) {
+            if (cnx->angleLoaded) {
                 angle::resetAnglePlatform(disp.dpy);
             }
             if (cnx->egl.eglTerminate(disp.dpy) == EGL_FALSE) {
diff --git a/opengl/libs/EGL/egl_object.cpp b/opengl/libs/EGL/egl_object.cpp
index efbe613..33a77c4 100644
--- a/opengl/libs/EGL/egl_object.cpp
+++ b/opengl/libs/EGL/egl_object.cpp
@@ -84,7 +84,7 @@
     if (win != nullptr && connected) {
         // NOTE: When using Vulkan backend, the Vulkan runtime makes all the
         // native_window_* calls, so don't do them here.
-        if (!cnx->useAngle) {
+        if (!cnx->angleLoaded) {
             native_window_set_buffers_format(win, 0);
             if (native_window_api_disconnect(win, NATIVE_WINDOW_API_EGL)) {
                 ALOGW("EGLNativeWindowType %p disconnect failed", win);
diff --git a/opengl/libs/EGL/egl_platform_entries.cpp b/opengl/libs/EGL/egl_platform_entries.cpp
index 48718bb..88001b2 100644
--- a/opengl/libs/EGL/egl_platform_entries.cpp
+++ b/opengl/libs/EGL/egl_platform_entries.cpp
@@ -680,7 +680,7 @@
 
     // NOTE: When using Vulkan backend, the Vulkan runtime makes all the
     // native_window_* calls, so don't do them here.
-    if (!cnx->useAngle) {
+    if (!cnx->angleLoaded) {
         int result = native_window_api_connect(window, NATIVE_WINDOW_API_EGL);
         if (result < 0) {
             ALOGE("eglCreateWindowSurface: native_window_api_connect (win=%p) "
@@ -699,14 +699,14 @@
     std::vector<AttrType> strippedAttribList;
     if (!processAttributes<AttrType>(dp, window, attrib_list, &colorSpace, &strippedAttribList)) {
         ALOGE("error invalid colorspace: %d", colorSpace);
-        if (!cnx->useAngle) {
+        if (!cnx->angleLoaded) {
             native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
         }
         return EGL_NO_SURFACE;
     }
     attrib_list = strippedAttribList.data();
 
-    if (!cnx->useAngle) {
+    if (!cnx->angleLoaded) {
         int err = native_window_set_buffers_format(window, static_cast<int>(format));
         if (err != 0) {
             ALOGE("error setting native window pixel format: %s (%d)", strerror(-err), err);
@@ -738,7 +738,7 @@
     }
 
     // EGLSurface creation failed
-    if (!cnx->useAngle) {
+    if (!cnx->angleLoaded) {
         native_window_set_buffers_format(window, 0);
         native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
     }
@@ -1349,7 +1349,7 @@
         }
     }
 
-    if (!s->cnx->useAngle) {
+    if (!s->cnx->angleLoaded) {
         if (!sendSurfaceMetadata(s)) {
             native_window_api_disconnect(s->getNativeWindow(), NATIVE_WINDOW_API_EGL);
             return setError(EGL_BAD_NATIVE_WINDOW, (EGLBoolean)EGL_FALSE);
@@ -1374,7 +1374,7 @@
         androidRect.bottom = y;
         androidRects.push_back(androidRect);
     }
-    if (!s->cnx->useAngle) {
+    if (!s->cnx->angleLoaded) {
         native_window_set_surface_damage(s->getNativeWindow(), androidRects.data(),
                                          androidRects.size());
     }
@@ -1465,7 +1465,7 @@
         int err = native_window_set_auto_refresh(s->getNativeWindow(), value != 0);
         if (err != 0) {
             return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-        } else if (!s->cnx->useAngle) {
+        } else if (!s->cnx->angleLoaded) {
             return EGL_TRUE;
         } // else if ANGLE, fall through to the call to the driver (i.e. ANGLE) below
     }
@@ -1479,7 +1479,7 @@
         int err = native_window_enable_frame_timestamps(s->getNativeWindow(), value != 0);
         if (err != 0) {
             return setError(EGL_BAD_SURFACE, (EGLBoolean)EGL_FALSE);
-        } else if (!s->cnx->useAngle) {
+        } else if (!s->cnx->angleLoaded) {
             return EGL_TRUE;
         } // else if ANGLE, fall through to the call to the driver (i.e. ANGLE) below
     }
diff --git a/opengl/libs/EGL/egldefs.h b/opengl/libs/EGL/egldefs.h
index fcc11f1..3bd37cb 100644
--- a/opengl/libs/EGL/egldefs.h
+++ b/opengl/libs/EGL/egldefs.h
@@ -41,7 +41,8 @@
             libEgl(nullptr),
             libGles1(nullptr),
             libGles2(nullptr),
-            systemDriverUnloaded(false) {
+            systemDriverUnloaded(false),
+            angleLoaded(false) {
         const char* const* entries = platform_names;
         EGLFuncPointer* curr = reinterpret_cast<EGLFuncPointer*>(&platform);
         while (*entries) {
@@ -73,7 +74,7 @@
     void* libGles2;
 
     bool systemDriverUnloaded;
-    bool useAngle; // Was ANGLE successfully loaded
+    bool angleLoaded; // Was ANGLE successfully loaded
 };
 
 extern gl_hooks_t gHooks[2];
diff --git a/services/inputflinger/Android.bp b/services/inputflinger/Android.bp
index 69df45b..dc7c75a 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -60,6 +60,7 @@
     name: "libinputflinger_sources",
     srcs: [
         "InputCommonConverter.cpp",
+        "InputDeviceMetricsCollector.cpp",
         "InputProcessor.cpp",
         "PreferStylusOverTouchBlocker.cpp",
         "UnwantedInteractionBlocker.cpp",
@@ -105,6 +106,13 @@
                 "libstatspull",
                 "libstatssocket",
             ],
+            include_dirs: [
+                "bionic/libc/kernel/android/uapi/",
+                "bionic/libc/kernel/uapi",
+            ],
+            cflags: [
+                "-D__ANDROID_HOST__",
+            ],
         },
     },
 }
@@ -129,6 +137,7 @@
         "libinputflinger_base",
         "libinputreader",
         "libinputreporter",
+        "libPlatformProperties",
     ],
     static_libs: [
         "libinputdispatcher",
@@ -228,6 +237,9 @@
         "inputflinger",
         "libinputflingerhost",
 
+        // rust targets
+        "libinput_rust_test",
+
         // native fuzzers
         "inputflinger_latencytracker_fuzzer",
         "inputflinger_cursor_input_fuzzer",
diff --git a/services/inputflinger/BlockingQueue.h b/services/inputflinger/BlockingQueue.h
index fe37287..5693848 100644
--- a/services/inputflinger/BlockingQueue.h
+++ b/services/inputflinger/BlockingQueue.h
@@ -16,15 +16,17 @@
 
 #pragma once
 
-#include "android-base/thread_annotations.h"
 #include <condition_variable>
+#include <list>
 #include <mutex>
-#include <vector>
+#include <optional>
+#include "android-base/thread_annotations.h"
 
 namespace android {
 
 /**
- * A FIFO queue that stores up to <i>capacity</i> objects.
+ * A thread-safe FIFO queue. This list-backed queue stores up to <i>capacity</i> objects if
+ * a capacity is provided at construction, and is otherwise unbounded.
  * Objects can always be added. Objects are added immediately.
  * If the queue is full, new objects cannot be added.
  *
@@ -33,13 +35,13 @@
 template <class T>
 class BlockingQueue {
 public:
-    BlockingQueue(size_t capacity) : mCapacity(capacity) {
-        mQueue.reserve(mCapacity);
-    };
+    explicit BlockingQueue() = default;
+
+    explicit BlockingQueue(size_t capacity) : mCapacity(capacity){};
 
     /**
      * Retrieve and remove the oldest object.
-     * Blocks execution while queue is empty.
+     * Blocks execution indefinitely while queue is empty.
      */
     T pop() {
         std::unique_lock lock(mLock);
@@ -51,26 +53,62 @@
     };
 
     /**
+     * Retrieve and remove the oldest object.
+     * Blocks execution for the given duration while queue is empty, and returns std::nullopt
+     * if the queue was empty for the entire duration.
+     */
+    std::optional<T> popWithTimeout(std::chrono::nanoseconds duration) {
+        std::unique_lock lock(mLock);
+        android::base::ScopedLockAssertion assumeLock(mLock);
+        if (!mHasElements.wait_for(lock, duration,
+                                   [this]() REQUIRES(mLock) { return !this->mQueue.empty(); })) {
+            return {};
+        }
+        T t = std::move(mQueue.front());
+        mQueue.erase(mQueue.begin());
+        return t;
+    };
+
+    /**
      * Add a new object to the queue.
      * Does not block.
      * Return true if an element was successfully added.
      * Return false if the queue is full.
      */
     bool push(T&& t) {
-        {
+        { // acquire lock
             std::scoped_lock lock(mLock);
-            if (mQueue.size() == mCapacity) {
+            if (mCapacity && mQueue.size() == mCapacity) {
                 return false;
             }
             mQueue.push_back(std::move(t));
-        }
+        } // release lock
         mHasElements.notify_one();
         return true;
     };
 
-    void erase(const std::function<bool(const T&)>& lambda) {
+    /**
+     * Construct a new object into the queue.
+     * Does not block.
+     * Return true if an element was successfully added.
+     * Return false if the queue is full.
+     */
+    template <class... Args>
+    bool emplace(Args&&... args) {
+        { // acquire lock
+            std::scoped_lock lock(mLock);
+            if (mCapacity && mQueue.size() == mCapacity) {
+                return false;
+            }
+            mQueue.emplace_back(args...);
+        } // release lock
+        mHasElements.notify_one();
+        return true;
+    };
+
+    void erase_if(const std::function<bool(const T&)>& pred) {
         std::scoped_lock lock(mLock);
-        std::erase_if(mQueue, [&lambda](const auto& t) { return lambda(t); });
+        std::erase_if(mQueue, pred);
     }
 
     /**
@@ -93,7 +131,7 @@
     }
 
 private:
-    const size_t mCapacity;
+    const std::optional<size_t> mCapacity;
     /**
      * Used to signal that mQueue is non-empty.
      */
@@ -102,7 +140,7 @@
      * Lock for accessing and waiting on elements.
      */
     std::mutex mLock;
-    std::vector<T> mQueue GUARDED_BY(mLock);
+    std::list<T> mQueue GUARDED_BY(mLock);
 };
 
 } // namespace android
diff --git a/services/inputflinger/InputCommonConverter.cpp b/services/inputflinger/InputCommonConverter.cpp
index 2437d0f..6ccd9e7 100644
--- a/services/inputflinger/InputCommonConverter.cpp
+++ b/services/inputflinger/InputCommonConverter.cpp
@@ -258,12 +258,12 @@
 static_assert(static_cast<common::Axis>(AMOTION_EVENT_AXIS_GENERIC_14) == common::Axis::GENERIC_14);
 static_assert(static_cast<common::Axis>(AMOTION_EVENT_AXIS_GENERIC_15) == common::Axis::GENERIC_15);
 static_assert(static_cast<common::Axis>(AMOTION_EVENT_AXIS_GENERIC_16) == common::Axis::GENERIC_16);
-// TODO(b/251196347): add GESTURE_{X,Y}_OFFSET, GESTURE_SCROLL_{X,Y}_DISTANCE, and
-// GESTURE_PINCH_SCALE_FACTOR.
+// TODO(b/251196347): add GESTURE_{X,Y}_OFFSET, GESTURE_SCROLL_{X,Y}_DISTANCE,
+// GESTURE_PINCH_SCALE_FACTOR, and GESTURE_SWIPE_FINGER_COUNT.
 // If you added a new axis, consider whether this should also be exposed as a HAL axis. Update the
 // static_assert below and add the new axis here, or leave a comment summarizing your decision.
 static_assert(static_cast<common::Axis>(AMOTION_EVENT_MAXIMUM_VALID_AXIS_VALUE) ==
-              static_cast<common::Axis>(AMOTION_EVENT_AXIS_GESTURE_PINCH_SCALE_FACTOR));
+              static_cast<common::Axis>(AMOTION_EVENT_AXIS_GESTURE_SWIPE_FINGER_COUNT));
 
 static common::VideoFrame getHalVideoFrame(const TouchVideoFrame& frame) {
     common::VideoFrame out;
@@ -289,9 +289,9 @@
 static void getHalPropertiesAndCoords(const NotifyMotionArgs& args,
                                       std::vector<common::PointerProperties>& outPointerProperties,
                                       std::vector<common::PointerCoords>& outPointerCoords) {
-    outPointerProperties.reserve(args.pointerCount);
-    outPointerCoords.reserve(args.pointerCount);
-    for (size_t i = 0; i < args.pointerCount; i++) {
+    outPointerProperties.reserve(args.getPointerCount());
+    outPointerCoords.reserve(args.getPointerCount());
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         common::PointerProperties properties;
         properties.id = args.pointerProperties[i].id;
         properties.toolType = getToolType(args.pointerProperties[i].toolType);
diff --git a/services/inputflinger/InputDeviceMetricsCollector.cpp b/services/inputflinger/InputDeviceMetricsCollector.cpp
new file mode 100644
index 0000000..999e175
--- /dev/null
+++ b/services/inputflinger/InputDeviceMetricsCollector.cpp
@@ -0,0 +1,450 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "InputDeviceMetricsCollector"
+#include "InputDeviceMetricsCollector.h"
+
+#include "KeyCodeClassifications.h"
+
+#include <android-base/stringprintf.h>
+#include <input/PrintTools.h>
+#include <linux/input.h>
+
+namespace android {
+
+using android::base::StringPrintf;
+using std::chrono::nanoseconds;
+using std::chrono_literals::operator""ns;
+
+namespace {
+
+constexpr nanoseconds DEFAULT_USAGE_SESSION_TIMEOUT = std::chrono::minutes(2);
+
+/**
+ * Log debug messages about metrics events logged to statsd.
+ * Enable this via "adb shell setprop log.tag.InputDeviceMetricsCollector DEBUG" (requires restart)
+ */
+const bool DEBUG = __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO);
+
+int32_t linuxBusToInputDeviceBusEnum(int32_t linuxBus) {
+    // When adding cases to this switch, also add them to the copy of this method in
+    // TouchpadInputMapper.cpp.
+    // TODO(b/286394420): deduplicate this method with the one in TouchpadInputMapper.cpp.
+    switch (linuxBus) {
+        case BUS_USB:
+            return util::INPUT_DEVICE_USAGE_REPORTED__DEVICE_BUS__USB;
+        case BUS_BLUETOOTH:
+            return util::INPUT_DEVICE_USAGE_REPORTED__DEVICE_BUS__BLUETOOTH;
+        default:
+            return util::INPUT_DEVICE_USAGE_REPORTED__DEVICE_BUS__OTHER;
+    }
+}
+
+class : public InputDeviceMetricsLogger {
+    nanoseconds getCurrentTime() override { return nanoseconds(systemTime(SYSTEM_TIME_MONOTONIC)); }
+
+    void logInputDeviceUsageReported(const InputDeviceIdentifier& identifier,
+                                     const DeviceUsageReport& report) override {
+        const int32_t durationMillis =
+                std::chrono::duration_cast<std::chrono::milliseconds>(report.usageDuration).count();
+        const static std::vector<int32_t> empty;
+
+        ALOGD_IF(DEBUG, "Usage session reported for device: %s", identifier.name.c_str());
+        ALOGD_IF(DEBUG, "    Total duration: %dms", durationMillis);
+        ALOGD_IF(DEBUG, "    Source breakdown:");
+
+        std::vector<int32_t> sources;
+        std::vector<int32_t> durationsPerSource;
+        for (auto& [src, dur] : report.sourceBreakdown) {
+            sources.push_back(ftl::to_underlying(src));
+            int32_t durMillis = std::chrono::duration_cast<std::chrono::milliseconds>(dur).count();
+            durationsPerSource.emplace_back(durMillis);
+            ALOGD_IF(DEBUG, "        - usageSource: %s\t duration: %dms",
+                     ftl::enum_string(src).c_str(), durMillis);
+        }
+
+        ALOGD_IF(DEBUG, "    Uid breakdown:");
+
+        std::vector<int32_t> uids;
+        std::vector<int32_t> durationsPerUid;
+        for (auto& [uid, dur] : report.uidBreakdown) {
+            uids.push_back(uid.val());
+            int32_t durMillis = std::chrono::duration_cast<std::chrono::milliseconds>(dur).count();
+            durationsPerUid.push_back(durMillis);
+            ALOGD_IF(DEBUG, "        - uid: %s\t duration: %dms", uid.toString().c_str(),
+                     durMillis);
+        }
+        util::stats_write(util::INPUTDEVICE_USAGE_REPORTED, identifier.vendor, identifier.product,
+                          identifier.version, linuxBusToInputDeviceBusEnum(identifier.bus),
+                          durationMillis, sources, durationsPerSource, uids, durationsPerUid);
+    }
+} sStatsdLogger;
+
+bool isIgnoredInputDeviceId(int32_t deviceId) {
+    switch (deviceId) {
+        case INVALID_INPUT_DEVICE_ID:
+        case VIRTUAL_KEYBOARD_ID:
+            return true;
+        default:
+            return false;
+    }
+}
+
+} // namespace
+
+InputDeviceUsageSource getUsageSourceForKeyArgs(const InputDeviceInfo& info,
+                                                const NotifyKeyArgs& keyArgs) {
+    if (!isFromSource(keyArgs.source, AINPUT_SOURCE_KEYBOARD)) {
+        return InputDeviceUsageSource::UNKNOWN;
+    }
+
+    if (isFromSource(keyArgs.source, AINPUT_SOURCE_DPAD) &&
+        DPAD_ALL_KEYCODES.count(keyArgs.keyCode) != 0) {
+        return InputDeviceUsageSource::DPAD;
+    }
+
+    if (isFromSource(keyArgs.source, AINPUT_SOURCE_GAMEPAD) &&
+        GAMEPAD_KEYCODES.count(keyArgs.keyCode) != 0) {
+        return InputDeviceUsageSource::GAMEPAD;
+    }
+
+    if (info.getKeyboardType() == AINPUT_KEYBOARD_TYPE_ALPHABETIC) {
+        return InputDeviceUsageSource::KEYBOARD;
+    }
+
+    return InputDeviceUsageSource::BUTTONS;
+}
+
+std::set<InputDeviceUsageSource> getUsageSourcesForMotionArgs(const NotifyMotionArgs& motionArgs) {
+    LOG_ALWAYS_FATAL_IF(motionArgs.getPointerCount() < 1, "Received motion args without pointers");
+    std::set<InputDeviceUsageSource> sources;
+
+    for (uint32_t i = 0; i < motionArgs.getPointerCount(); i++) {
+        const auto toolType = motionArgs.pointerProperties[i].toolType;
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_MOUSE)) {
+            if (toolType == ToolType::MOUSE) {
+                sources.emplace(InputDeviceUsageSource::MOUSE);
+                continue;
+            }
+            if (toolType == ToolType::FINGER) {
+                sources.emplace(InputDeviceUsageSource::TOUCHPAD);
+                continue;
+            }
+            if (isStylusToolType(toolType)) {
+                sources.emplace(InputDeviceUsageSource::STYLUS_INDIRECT);
+                continue;
+            }
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_MOUSE_RELATIVE) &&
+            toolType == ToolType::MOUSE) {
+            sources.emplace(InputDeviceUsageSource::MOUSE_CAPTURED);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_TOUCHPAD) &&
+            toolType == ToolType::FINGER) {
+            sources.emplace(InputDeviceUsageSource::TOUCHPAD_CAPTURED);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_BLUETOOTH_STYLUS) &&
+            isStylusToolType(toolType)) {
+            sources.emplace(InputDeviceUsageSource::STYLUS_FUSED);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_STYLUS) && isStylusToolType(toolType)) {
+            sources.emplace(InputDeviceUsageSource::STYLUS_DIRECT);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_TOUCH_NAVIGATION)) {
+            sources.emplace(InputDeviceUsageSource::TOUCH_NAVIGATION);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_JOYSTICK)) {
+            sources.emplace(InputDeviceUsageSource::JOYSTICK);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_ROTARY_ENCODER)) {
+            sources.emplace(InputDeviceUsageSource::ROTARY_ENCODER);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_TRACKBALL)) {
+            sources.emplace(InputDeviceUsageSource::TRACKBALL);
+            continue;
+        }
+        if (isFromSource(motionArgs.source, AINPUT_SOURCE_TOUCHSCREEN)) {
+            sources.emplace(InputDeviceUsageSource::TOUCHSCREEN);
+            continue;
+        }
+        sources.emplace(InputDeviceUsageSource::UNKNOWN);
+    }
+
+    return sources;
+}
+
+// --- InputDeviceMetricsCollector ---
+
+InputDeviceMetricsCollector::InputDeviceMetricsCollector(InputListenerInterface& listener)
+      : InputDeviceMetricsCollector(listener, sStatsdLogger, DEFAULT_USAGE_SESSION_TIMEOUT) {}
+
+InputDeviceMetricsCollector::InputDeviceMetricsCollector(InputListenerInterface& listener,
+                                                         InputDeviceMetricsLogger& logger,
+                                                         nanoseconds usageSessionTimeout)
+      : mNextListener(listener), mLogger(logger), mUsageSessionTimeout(usageSessionTimeout) {}
+
+void InputDeviceMetricsCollector::notifyInputDevicesChanged(
+        const NotifyInputDevicesChangedArgs& args) {
+    reportCompletedSessions();
+    onInputDevicesChanged(args.inputDeviceInfos);
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyConfigurationChanged(
+        const NotifyConfigurationChangedArgs& args) {
+    reportCompletedSessions();
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyKey(const NotifyKeyArgs& args) {
+    reportCompletedSessions();
+    const SourceProvider getSources = [&args](const InputDeviceInfo& info) {
+        return std::set{getUsageSourceForKeyArgs(info, args)};
+    };
+    onInputDeviceUsage(DeviceId{args.deviceId}, nanoseconds(args.eventTime), getSources);
+
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyMotion(const NotifyMotionArgs& args) {
+    reportCompletedSessions();
+    onInputDeviceUsage(DeviceId{args.deviceId}, nanoseconds(args.eventTime),
+                       [&args](const auto&) { return getUsageSourcesForMotionArgs(args); });
+
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifySwitch(const NotifySwitchArgs& args) {
+    reportCompletedSessions();
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifySensor(const NotifySensorArgs& args) {
+    reportCompletedSessions();
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyVibratorState(const NotifyVibratorStateArgs& args) {
+    reportCompletedSessions();
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyDeviceReset(const NotifyDeviceResetArgs& args) {
+    reportCompletedSessions();
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyPointerCaptureChanged(
+        const NotifyPointerCaptureChangedArgs& args) {
+    reportCompletedSessions();
+    mNextListener.notify(args);
+}
+
+void InputDeviceMetricsCollector::notifyDeviceInteraction(int32_t deviceId, nsecs_t timestamp,
+                                                          const std::set<Uid>& uids) {
+    mInteractionsQueue.push(DeviceId{deviceId}, timestamp, uids);
+}
+
+void InputDeviceMetricsCollector::dump(std::string& dump) {
+    dump += "InputDeviceMetricsCollector:\n";
+
+    dump += "  Logged device IDs: " + dumpMapKeys(mLoggedDeviceInfos, &toString) + "\n";
+    dump += "  Devices with active usage sessions: " +
+            dumpMapKeys(mActiveUsageSessions, &toString) + "\n";
+}
+
+void InputDeviceMetricsCollector::onInputDevicesChanged(const std::vector<InputDeviceInfo>& infos) {
+    std::map<DeviceId, InputDeviceInfo> newDeviceInfos;
+
+    for (const InputDeviceInfo& info : infos) {
+        if (isIgnoredInputDeviceId(info.getId())) {
+            continue;
+        }
+        newDeviceInfos.emplace(info.getId(), info);
+    }
+
+    for (auto [deviceId, info] : mLoggedDeviceInfos) {
+        if (newDeviceInfos.count(deviceId) != 0) {
+            continue;
+        }
+        onInputDeviceRemoved(deviceId, info.getIdentifier());
+    }
+
+    std::swap(newDeviceInfos, mLoggedDeviceInfos);
+}
+
+void InputDeviceMetricsCollector::onInputDeviceRemoved(DeviceId deviceId,
+                                                       const InputDeviceIdentifier& identifier) {
+    auto it = mActiveUsageSessions.find(deviceId);
+    if (it == mActiveUsageSessions.end()) {
+        return;
+    }
+    // Report usage for that device if there is an active session.
+    auto& [_, activeSession] = *it;
+    mLogger.logInputDeviceUsageReported(identifier, activeSession.finishSession());
+    mActiveUsageSessions.erase(it);
+
+    // We don't remove this from mLoggedDeviceInfos because it will be updated in
+    // onInputDevicesChanged().
+}
+
+void InputDeviceMetricsCollector::onInputDeviceUsage(DeviceId deviceId, nanoseconds eventTime,
+                                                     const SourceProvider& getSources) {
+    auto infoIt = mLoggedDeviceInfos.find(deviceId);
+    if (infoIt == mLoggedDeviceInfos.end()) {
+        // Do not track usage for devices that are not logged.
+        return;
+    }
+
+    auto [sessionIt, _] =
+            mActiveUsageSessions.try_emplace(deviceId, mUsageSessionTimeout, eventTime);
+    for (InputDeviceUsageSource source : getSources(infoIt->second)) {
+        sessionIt->second.recordUsage(eventTime, source);
+    }
+}
+
+void InputDeviceMetricsCollector::onInputDeviceInteraction(const Interaction& interaction) {
+    auto activeSessionIt = mActiveUsageSessions.find(std::get<DeviceId>(interaction));
+    if (activeSessionIt == mActiveUsageSessions.end()) {
+        return;
+    }
+
+    activeSessionIt->second.recordInteraction(interaction);
+}
+
+void InputDeviceMetricsCollector::reportCompletedSessions() {
+    // Process all pending interactions.
+    for (auto interaction = mInteractionsQueue.pop(); interaction;
+         interaction = mInteractionsQueue.pop()) {
+        onInputDeviceInteraction(*interaction);
+    }
+
+    const auto currentTime = mLogger.getCurrentTime();
+    std::vector<DeviceId> completedUsageSessions;
+
+    // Process usages for all active session to determine if any sessions have expired.
+    for (auto& [deviceId, activeSession] : mActiveUsageSessions) {
+        if (activeSession.checkIfCompletedAt(currentTime)) {
+            completedUsageSessions.emplace_back(deviceId);
+        }
+    }
+
+    // Close out and log all expired usage sessions.
+    for (DeviceId deviceId : completedUsageSessions) {
+        const auto infoIt = mLoggedDeviceInfos.find(deviceId);
+        LOG_ALWAYS_FATAL_IF(infoIt == mLoggedDeviceInfos.end());
+
+        auto activeSessionIt = mActiveUsageSessions.find(deviceId);
+        LOG_ALWAYS_FATAL_IF(activeSessionIt == mActiveUsageSessions.end());
+        auto& [_, activeSession] = *activeSessionIt;
+        mLogger.logInputDeviceUsageReported(infoIt->second.getIdentifier(),
+                                            activeSession.finishSession());
+        mActiveUsageSessions.erase(activeSessionIt);
+    }
+}
+
+// --- InputDeviceMetricsCollector::ActiveSession ---
+
+InputDeviceMetricsCollector::ActiveSession::ActiveSession(nanoseconds usageSessionTimeout,
+                                                          nanoseconds startTime)
+      : mUsageSessionTimeout(usageSessionTimeout), mDeviceSession({startTime, startTime}) {}
+
+void InputDeviceMetricsCollector::ActiveSession::recordUsage(nanoseconds eventTime,
+                                                             InputDeviceUsageSource source) {
+    // We assume that event times for subsequent events are always monotonically increasing for each
+    // input device.
+    auto [activeSourceIt, inserted] =
+            mActiveSessionsBySource.try_emplace(source, eventTime, eventTime);
+    if (!inserted) {
+        activeSourceIt->second.end = eventTime;
+    }
+    mDeviceSession.end = eventTime;
+}
+
+void InputDeviceMetricsCollector::ActiveSession::recordInteraction(const Interaction& interaction) {
+    const auto sessionExpiryTime = mDeviceSession.end + mUsageSessionTimeout;
+    const auto timestamp = std::get<nanoseconds>(interaction);
+    if (timestamp >= sessionExpiryTime) {
+        // This interaction occurred after the device's current active session is set to expire.
+        // Ignore it.
+        return;
+    }
+
+    for (Uid uid : std::get<std::set<Uid>>(interaction)) {
+        auto [activeUidIt, inserted] = mActiveSessionsByUid.try_emplace(uid, timestamp, timestamp);
+        if (!inserted) {
+            activeUidIt->second.end = timestamp;
+        }
+    }
+}
+
+bool InputDeviceMetricsCollector::ActiveSession::checkIfCompletedAt(nanoseconds timestamp) {
+    const auto sessionExpiryTime = timestamp - mUsageSessionTimeout;
+    std::vector<InputDeviceUsageSource> completedSourceSessionsForDevice;
+    for (auto& [source, session] : mActiveSessionsBySource) {
+        if (session.end <= sessionExpiryTime) {
+            completedSourceSessionsForDevice.emplace_back(source);
+        }
+    }
+    for (InputDeviceUsageSource source : completedSourceSessionsForDevice) {
+        auto it = mActiveSessionsBySource.find(source);
+        const auto& [_, session] = *it;
+        mSourceUsageBreakdown.emplace_back(source, session.end - session.start);
+        mActiveSessionsBySource.erase(it);
+    }
+
+    std::vector<Uid> completedUidSessionsForDevice;
+    for (auto& [uid, session] : mActiveSessionsByUid) {
+        if (session.end <= sessionExpiryTime) {
+            completedUidSessionsForDevice.emplace_back(uid);
+        }
+    }
+    for (Uid uid : completedUidSessionsForDevice) {
+        auto it = mActiveSessionsByUid.find(uid);
+        const auto& [_, session] = *it;
+        mUidUsageBreakdown.emplace_back(uid, session.end - session.start);
+        mActiveSessionsByUid.erase(it);
+    }
+
+    // This active session has expired if there are no more active source sessions tracked.
+    return mActiveSessionsBySource.empty();
+}
+
+InputDeviceMetricsLogger::DeviceUsageReport
+InputDeviceMetricsCollector::ActiveSession::finishSession() {
+    const auto deviceUsageDuration = mDeviceSession.end - mDeviceSession.start;
+
+    for (const auto& [source, sourceSession] : mActiveSessionsBySource) {
+        mSourceUsageBreakdown.emplace_back(source, sourceSession.end - sourceSession.start);
+    }
+    mActiveSessionsBySource.clear();
+
+    for (const auto& [uid, uidSession] : mActiveSessionsByUid) {
+        mUidUsageBreakdown.emplace_back(uid, uidSession.end - uidSession.start);
+    }
+    mActiveSessionsByUid.clear();
+
+    return {deviceUsageDuration, mSourceUsageBreakdown, mUidUsageBreakdown};
+}
+
+} // namespace android
diff --git a/services/inputflinger/InputDeviceMetricsCollector.h b/services/inputflinger/InputDeviceMetricsCollector.h
new file mode 100644
index 0000000..c70e6d4
--- /dev/null
+++ b/services/inputflinger/InputDeviceMetricsCollector.h
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2023 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 "InputListener.h"
+#include "NotifyArgs.h"
+#include "SyncQueue.h"
+
+#include <ftl/mixins.h>
+#include <gui/WindowInfo.h>
+#include <input/InputDevice.h>
+#include <statslog.h>
+#include <chrono>
+#include <functional>
+#include <map>
+#include <set>
+#include <vector>
+
+namespace android {
+
+/**
+ * Logs metrics about registered input devices and their usages.
+ *
+ * All methods in the InputListenerInterface must be called from a single thread.
+ */
+class InputDeviceMetricsCollectorInterface : public InputListenerInterface {
+public:
+    /**
+     * Notify the metrics collector that there was an input device interaction with apps.
+     * Called from the InputDispatcher thread.
+     */
+    virtual void notifyDeviceInteraction(int32_t deviceId, nsecs_t timestamp,
+                                         const std::set<gui::Uid>& uids) = 0;
+    /**
+     * Dump the state of the interaction blocker.
+     * This method may be called on any thread (usually by the input manager on a binder thread).
+     */
+    virtual void dump(std::string& dump) = 0;
+};
+
+/**
+ * Enum representation of the InputDeviceUsageSource.
+ */
+enum class InputDeviceUsageSource : int32_t {
+    UNKNOWN = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__UNKNOWN,
+    BUTTONS = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__BUTTONS,
+    KEYBOARD = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__KEYBOARD,
+    DPAD = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__DPAD,
+    GAMEPAD = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__GAMEPAD,
+    JOYSTICK = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__JOYSTICK,
+    MOUSE = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__MOUSE,
+    MOUSE_CAPTURED = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__MOUSE_CAPTURED,
+    TOUCHPAD = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__TOUCHPAD,
+    TOUCHPAD_CAPTURED = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__TOUCHPAD_CAPTURED,
+    ROTARY_ENCODER = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__ROTARY_ENCODER,
+    STYLUS_DIRECT = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__STYLUS_DIRECT,
+    STYLUS_INDIRECT = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__STYLUS_INDIRECT,
+    STYLUS_FUSED = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__STYLUS_FUSED,
+    TOUCH_NAVIGATION = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__TOUCH_NAVIGATION,
+    TOUCHSCREEN = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__TOUCHSCREEN,
+    TRACKBALL = util::INPUT_DEVICE_USAGE_REPORTED__USAGE_SOURCES__TRACKBALL,
+
+    ftl_first = UNKNOWN,
+    ftl_last = TRACKBALL,
+};
+
+/** Returns the InputDeviceUsageSource that corresponds to the key event. */
+InputDeviceUsageSource getUsageSourceForKeyArgs(const InputDeviceInfo&, const NotifyKeyArgs&);
+
+/** Returns the InputDeviceUsageSources that correspond to the motion event. */
+std::set<InputDeviceUsageSource> getUsageSourcesForMotionArgs(const NotifyMotionArgs&);
+
+/** The logging interface for the metrics collector, injected for testing. */
+class InputDeviceMetricsLogger {
+public:
+    virtual std::chrono::nanoseconds getCurrentTime() = 0;
+
+    // Describes the breakdown of an input device usage session by its usage sources.
+    // An input device can have more than one usage source. For example, some game controllers have
+    // buttons, joysticks, and touchpads. We track usage by these sources to get a better picture of
+    // the device usage. The source breakdown of a 10 minute usage session could look like this:
+    //   { {GAMEPAD, <9 mins>}, {TOUCHPAD, <2 mins>}, {TOUCHPAD, <3 mins>} }
+    // This would indicate that the GAMEPAD source was used first, and that source usage session
+    // lasted for 9 mins. During that time, the TOUCHPAD was used for 2 mins, until its source
+    // usage session expired. The TOUCHPAD was then used again later for another 3 mins.
+    using SourceUsageBreakdown =
+            std::vector<std::pair<InputDeviceUsageSource, std::chrono::nanoseconds /*duration*/>>;
+
+    // Describes the breakdown of an input device usage session by the UIDs that it interacted with.
+    using UidUsageBreakdown =
+            std::vector<std::pair<gui::Uid, std::chrono::nanoseconds /*duration*/>>;
+
+    struct DeviceUsageReport {
+        std::chrono::nanoseconds usageDuration;
+        SourceUsageBreakdown sourceBreakdown;
+        UidUsageBreakdown uidBreakdown;
+    };
+
+    virtual void logInputDeviceUsageReported(const InputDeviceIdentifier&,
+                                             const DeviceUsageReport&) = 0;
+    virtual ~InputDeviceMetricsLogger() = default;
+};
+
+class InputDeviceMetricsCollector : public InputDeviceMetricsCollectorInterface {
+public:
+    explicit InputDeviceMetricsCollector(InputListenerInterface& listener);
+    ~InputDeviceMetricsCollector() override = default;
+
+    // Test constructor
+    InputDeviceMetricsCollector(InputListenerInterface& listener, InputDeviceMetricsLogger& logger,
+                                std::chrono::nanoseconds usageSessionTimeout);
+
+    void notifyInputDevicesChanged(const NotifyInputDevicesChangedArgs& args) override;
+    void notifyConfigurationChanged(const NotifyConfigurationChangedArgs& args) override;
+    void notifyKey(const NotifyKeyArgs& args) override;
+    void notifyMotion(const NotifyMotionArgs& args) override;
+    void notifySwitch(const NotifySwitchArgs& args) override;
+    void notifySensor(const NotifySensorArgs& args) override;
+    void notifyVibratorState(const NotifyVibratorStateArgs& args) override;
+    void notifyDeviceReset(const NotifyDeviceResetArgs& args) override;
+    void notifyPointerCaptureChanged(const NotifyPointerCaptureChangedArgs& args) override;
+
+    void notifyDeviceInteraction(int32_t deviceId, nsecs_t timestamp,
+                                 const std::set<gui::Uid>& uids) override;
+    void dump(std::string& dump) override;
+
+private:
+    InputListenerInterface& mNextListener;
+    InputDeviceMetricsLogger& mLogger;
+    const std::chrono::nanoseconds mUsageSessionTimeout;
+
+    // Type-safe wrapper for input device id.
+    struct DeviceId : ftl::Constructible<DeviceId, std::int32_t>,
+                      ftl::Equatable<DeviceId>,
+                      ftl::Orderable<DeviceId> {
+        using Constructible::Constructible;
+    };
+    static inline std::string toString(const DeviceId& id) {
+        return std::to_string(ftl::to_underlying(id));
+    }
+
+    using Uid = gui::Uid;
+
+    std::map<DeviceId, InputDeviceInfo> mLoggedDeviceInfos;
+
+    using Interaction = std::tuple<DeviceId, std::chrono::nanoseconds, std::set<Uid>>;
+    SyncQueue<Interaction> mInteractionsQueue;
+
+    class ActiveSession {
+    public:
+        explicit ActiveSession(std::chrono::nanoseconds usageSessionTimeout,
+                               std::chrono::nanoseconds startTime);
+        void recordUsage(std::chrono::nanoseconds eventTime, InputDeviceUsageSource source);
+        void recordInteraction(const Interaction&);
+        bool checkIfCompletedAt(std::chrono::nanoseconds timestamp);
+        InputDeviceMetricsLogger::DeviceUsageReport finishSession();
+
+    private:
+        struct UsageSession {
+            std::chrono::nanoseconds start{};
+            std::chrono::nanoseconds end{};
+        };
+
+        const std::chrono::nanoseconds mUsageSessionTimeout;
+        UsageSession mDeviceSession{};
+
+        std::map<InputDeviceUsageSource, UsageSession> mActiveSessionsBySource{};
+        InputDeviceMetricsLogger::SourceUsageBreakdown mSourceUsageBreakdown{};
+
+        std::map<Uid, UsageSession> mActiveSessionsByUid{};
+        InputDeviceMetricsLogger::UidUsageBreakdown mUidUsageBreakdown{};
+    };
+
+    // The input devices that currently have active usage sessions.
+    std::map<DeviceId, ActiveSession> mActiveUsageSessions;
+
+    void onInputDevicesChanged(const std::vector<InputDeviceInfo>& infos);
+    void onInputDeviceRemoved(DeviceId deviceId, const InputDeviceIdentifier& identifier);
+    using SourceProvider = std::function<std::set<InputDeviceUsageSource>(const InputDeviceInfo&)>;
+    void onInputDeviceUsage(DeviceId deviceId, std::chrono::nanoseconds eventTime,
+                            const SourceProvider& getSources);
+    void onInputDeviceInteraction(const Interaction&);
+    void reportCompletedSessions();
+};
+
+} // namespace android
diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index ddebcad..37b3187 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -23,6 +23,7 @@
 #include "InputReaderFactory.h"
 #include "UnwantedInteractionBlocker.h"
 
+#include <android/sysprop/InputProperties.sysprop.h>
 #include <binder/IPCThreadState.h>
 
 #include <log/log.h>
@@ -32,6 +33,9 @@
 
 namespace android {
 
+static const bool ENABLE_INPUT_DEVICE_USAGE_METRICS =
+        sysprop::InputProperties::enable_input_device_usage_metrics().value_or(true);
+
 using gui::FocusRequest;
 
 static int32_t exceptionCodeFromStatusT(status_t status) {
@@ -55,12 +59,22 @@
 
 /**
  * The event flow is via the "InputListener" interface, as follows:
- * InputReader -> UnwantedInteractionBlocker -> InputProcessor -> InputDispatcher
+ *   InputReader
+ *     -> UnwantedInteractionBlocker
+ *     -> InputProcessor
+ *     -> InputDeviceMetricsCollector
+ *     -> InputDispatcher
  */
 InputManager::InputManager(const sp<InputReaderPolicyInterface>& readerPolicy,
                            InputDispatcherPolicyInterface& dispatcherPolicy) {
     mDispatcher = createInputDispatcher(dispatcherPolicy);
-    mProcessor = std::make_unique<InputProcessor>(*mDispatcher);
+
+    if (ENABLE_INPUT_DEVICE_USAGE_METRICS) {
+        mCollector = std::make_unique<InputDeviceMetricsCollector>(*mDispatcher);
+    }
+
+    mProcessor = ENABLE_INPUT_DEVICE_USAGE_METRICS ? std::make_unique<InputProcessor>(*mCollector)
+                                                   : std::make_unique<InputProcessor>(*mDispatcher);
     mBlocker = std::make_unique<UnwantedInteractionBlocker>(*mProcessor);
     mReader = createInputReader(readerPolicy, *mBlocker);
 }
@@ -113,6 +127,10 @@
     return *mProcessor;
 }
 
+InputDeviceMetricsCollectorInterface& InputManager::getMetricsCollector() {
+    return *mCollector;
+}
+
 InputDispatcherInterface& InputManager::getDispatcher() {
     return *mDispatcher;
 }
@@ -131,6 +149,10 @@
     dump += '\n';
     mProcessor->dump(dump);
     dump += '\n';
+    if (ENABLE_INPUT_DEVICE_USAGE_METRICS) {
+        mCollector->dump(dump);
+        dump += '\n';
+    }
     mDispatcher->dump(dump);
     dump += '\n';
 }
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index b6ad419..9dc285f 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -20,6 +20,7 @@
  * Native input manager.
  */
 
+#include "InputDeviceMetricsCollector.h"
 #include "InputProcessor.h"
 #include "InputReaderBase.h"
 #include "include/UnwantedInteractionBlockerInterface.h"
@@ -82,9 +83,12 @@
     /* Gets the input reader. */
     virtual InputReaderInterface& getReader() = 0;
 
-    /* Gets the input processor */
+    /* Gets the input processor. */
     virtual InputProcessorInterface& getProcessor() = 0;
 
+    /* Gets the metrics collector. */
+    virtual InputDeviceMetricsCollectorInterface& getMetricsCollector() = 0;
+
     /* Gets the input dispatcher. */
     virtual InputDispatcherInterface& getDispatcher() = 0;
 
@@ -108,6 +112,7 @@
 
     InputReaderInterface& getReader() override;
     InputProcessorInterface& getProcessor() override;
+    InputDeviceMetricsCollectorInterface& getMetricsCollector() override;
     InputDispatcherInterface& getDispatcher() override;
     void monitor() override;
     void dump(std::string& dump) override;
@@ -124,6 +129,8 @@
 
     std::unique_ptr<InputProcessorInterface> mProcessor;
 
+    std::unique_ptr<InputDeviceMetricsCollectorInterface> mCollector;
+
     std::unique_ptr<InputDispatcherInterface> mDispatcher;
 };
 
diff --git a/services/inputflinger/InputProcessor.cpp b/services/inputflinger/InputProcessor.cpp
index 7a84be9..6dd267c 100644
--- a/services/inputflinger/InputProcessor.cpp
+++ b/services/inputflinger/InputProcessor.cpp
@@ -322,7 +322,7 @@
 void MotionClassifier::reset(const NotifyDeviceResetArgs& args) {
     int32_t deviceId = args.deviceId;
     // Clear the pending events right away, to avoid unnecessary work done by the HAL.
-    mEvents.erase([deviceId](const ClassifierEvent& event) {
+    mEvents.erase_if([deviceId](const ClassifierEvent& event) {
         std::optional<int32_t> eventDeviceId = event.getDeviceId();
         return eventDeviceId && (*eventDeviceId == deviceId);
     });
diff --git a/services/inputflinger/NotifyArgs.cpp b/services/inputflinger/NotifyArgs.cpp
index 408fbed..0fa47d1 100644
--- a/services/inputflinger/NotifyArgs.cpp
+++ b/services/inputflinger/NotifyArgs.cpp
@@ -83,7 +83,6 @@
         buttonState(buttonState),
         classification(classification),
         edgeFlags(edgeFlags),
-        pointerCount(pointerCount),
         xPrecision(xPrecision),
         yPrecision(yPrecision),
         xCursorPosition(xCursorPosition),
@@ -92,36 +91,8 @@
         readTime(readTime),
         videoFrames(videoFrames) {
     for (uint32_t i = 0; i < pointerCount; i++) {
-        this->pointerProperties[i].copyFrom(pointerProperties[i]);
-        this->pointerCoords[i].copyFrom(pointerCoords[i]);
-    }
-}
-
-NotifyMotionArgs::NotifyMotionArgs(const NotifyMotionArgs& other)
-      : id(other.id),
-        eventTime(other.eventTime),
-        deviceId(other.deviceId),
-        source(other.source),
-        displayId(other.displayId),
-        policyFlags(other.policyFlags),
-        action(other.action),
-        actionButton(other.actionButton),
-        flags(other.flags),
-        metaState(other.metaState),
-        buttonState(other.buttonState),
-        classification(other.classification),
-        edgeFlags(other.edgeFlags),
-        pointerCount(other.pointerCount),
-        xPrecision(other.xPrecision),
-        yPrecision(other.yPrecision),
-        xCursorPosition(other.xCursorPosition),
-        yCursorPosition(other.yCursorPosition),
-        downTime(other.downTime),
-        readTime(other.readTime),
-        videoFrames(other.videoFrames) {
-    for (uint32_t i = 0; i < pointerCount; i++) {
-        pointerProperties[i].copyFrom(other.pointerProperties[i]);
-        pointerCoords[i].copyFrom(other.pointerCoords[i]);
+        this->pointerProperties.push_back(pointerProperties[i]);
+        this->pointerCoords.push_back(pointerCoords[i]);
     }
 }
 
@@ -130,35 +101,22 @@
 }
 
 bool NotifyMotionArgs::operator==(const NotifyMotionArgs& rhs) const {
-    bool equal = id == rhs.id && eventTime == rhs.eventTime && readTime == rhs.readTime &&
+    return id == rhs.id && eventTime == rhs.eventTime && readTime == rhs.readTime &&
             deviceId == rhs.deviceId && source == rhs.source && displayId == rhs.displayId &&
             policyFlags == rhs.policyFlags && action == rhs.action &&
             actionButton == rhs.actionButton && flags == rhs.flags && metaState == rhs.metaState &&
             buttonState == rhs.buttonState && classification == rhs.classification &&
-            edgeFlags == rhs.edgeFlags &&
-            pointerCount == rhs.pointerCount
-            // PointerProperties and PointerCoords are compared separately below
-            && xPrecision == rhs.xPrecision && yPrecision == rhs.yPrecision &&
+            edgeFlags == rhs.edgeFlags && pointerProperties == rhs.pointerProperties &&
+            pointerCoords == rhs.pointerCoords && xPrecision == rhs.xPrecision &&
+            yPrecision == rhs.yPrecision &&
             isCursorPositionEqual(xCursorPosition, rhs.xCursorPosition) &&
             isCursorPositionEqual(yCursorPosition, rhs.yCursorPosition) &&
             downTime == rhs.downTime && videoFrames == rhs.videoFrames;
-    if (!equal) {
-        return false;
-    }
-
-    for (size_t i = 0; i < pointerCount; i++) {
-        equal = pointerProperties[i] == rhs.pointerProperties[i] &&
-                pointerCoords[i] == rhs.pointerCoords[i];
-        if (!equal) {
-            return false;
-        }
-    }
-    return true;
 }
 
 std::string NotifyMotionArgs::dump() const {
     std::string coords;
-    for (uint32_t i = 0; i < pointerCount; i++) {
+    for (uint32_t i = 0; i < getPointerCount(); i++) {
         if (!coords.empty()) {
             coords += ", ";
         }
@@ -181,11 +139,10 @@
         coords += "}";
     }
     return StringPrintf("NotifyMotionArgs(id=%" PRId32 ", eventTime=%" PRId64 ", deviceId=%" PRId32
-                        ", source=%s, action=%s, pointerCount=%" PRIu32
-                        " pointers=%s, flags=0x%08x)",
+                        ", source=%s, action=%s, pointerCount=%zu pointers=%s, flags=0x%08x)",
                         id, eventTime, deviceId, inputEventSourceToString(source).c_str(),
-                        MotionEvent::actionToString(action).c_str(), pointerCount, coords.c_str(),
-                        flags);
+                        MotionEvent::actionToString(action).c_str(), getPointerCount(),
+                        coords.c_str(), flags);
 }
 
 // --- NotifySwitchArgs ---
diff --git a/services/inputflinger/PreferStylusOverTouchBlocker.cpp b/services/inputflinger/PreferStylusOverTouchBlocker.cpp
index fbd296c..ee0ab33 100644
--- a/services/inputflinger/PreferStylusOverTouchBlocker.cpp
+++ b/services/inputflinger/PreferStylusOverTouchBlocker.cpp
@@ -22,7 +22,7 @@
 static std::pair<bool, bool> checkToolType(const NotifyMotionArgs& args) {
     bool hasStylus = false;
     bool hasTouch = false;
-    for (size_t i = 0; i < args.pointerCount; i++) {
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         // Make sure we are canceling stylus pointers
         const ToolType toolType = args.pointerProperties[i].toolType;
         if (isStylusToolType(toolType)) {
diff --git a/services/inputflinger/SyncQueue.h b/services/inputflinger/SyncQueue.h
new file mode 100644
index 0000000..62efd55
--- /dev/null
+++ b/services/inputflinger/SyncQueue.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 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 <utils/threads.h>
+#include <list>
+#include <mutex>
+#include <optional>
+
+namespace android {
+
+/** A thread-safe FIFO queue. */
+template <class T>
+class SyncQueue {
+public:
+    /** Retrieve and remove the oldest object. Returns std::nullopt if the queue is empty. */
+    std::optional<T> pop() {
+        std::scoped_lock lock(mLock);
+        if (mQueue.empty()) {
+            return {};
+        }
+        T t = std::move(mQueue.front());
+        mQueue.erase(mQueue.begin());
+        return t;
+    };
+
+    /** Add a new object to the queue. */
+    template <class... Args>
+    void push(Args&&... args) {
+        std::scoped_lock lock(mLock);
+        mQueue.emplace_back(args...);
+    };
+
+private:
+    std::mutex mLock;
+    std::list<T> mQueue GUARDED_BY(mLock);
+};
+
+} // namespace android
diff --git a/services/inputflinger/UnwantedInteractionBlocker.cpp b/services/inputflinger/UnwantedInteractionBlocker.cpp
index 02bc47d..f889de5 100644
--- a/services/inputflinger/UnwantedInteractionBlocker.cpp
+++ b/services/inputflinger/UnwantedInteractionBlocker.cpp
@@ -117,7 +117,7 @@
 }
 
 static int32_t getActionUpForPointerId(const NotifyMotionArgs& args, int32_t pointerId) {
-    for (size_t i = 0; i < args.pointerCount; i++) {
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         if (pointerId == args.pointerProperties[i].id) {
             return AMOTION_EVENT_ACTION_POINTER_UP |
                     (i << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
@@ -156,9 +156,10 @@
             actionMasked == AMOTION_EVENT_ACTION_POINTER_UP;
 
     NotifyMotionArgs newArgs{args};
-    newArgs.pointerCount = 0;
+    newArgs.pointerProperties.clear();
+    newArgs.pointerCoords.clear();
     int32_t newActionIndex = 0;
-    for (uint32_t i = 0; i < args.pointerCount; i++) {
+    for (uint32_t i = 0; i < args.getPointerCount(); i++) {
         const int32_t pointerId = args.pointerProperties[i].id;
         if (pointerIds.find(pointerId) != pointerIds.end()) {
             // skip this pointer
@@ -170,19 +171,18 @@
             }
             continue;
         }
-        newArgs.pointerProperties[newArgs.pointerCount].copyFrom(args.pointerProperties[i]);
-        newArgs.pointerCoords[newArgs.pointerCount].copyFrom(args.pointerCoords[i]);
+        newArgs.pointerProperties.push_back(args.pointerProperties[i]);
+        newArgs.pointerCoords.push_back(args.pointerCoords[i]);
         if (i == actionIndex) {
-            newActionIndex = newArgs.pointerCount;
+            newActionIndex = newArgs.getPointerCount() - 1;
         }
-        newArgs.pointerCount++;
     }
     // Update POINTER_DOWN or POINTER_UP actions
     if (isPointerUpOrDownAction && newArgs.action != ACTION_UNKNOWN) {
         newArgs.action =
                 actionMasked | (newActionIndex << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
         // Convert POINTER_DOWN and POINTER_UP to DOWN and UP if there's only 1 pointer remaining
-        if (newArgs.pointerCount == 1) {
+        if (newArgs.getPointerCount() == 1) {
             if (actionMasked == AMOTION_EVENT_ACTION_POINTER_DOWN) {
                 newArgs.action = AMOTION_EVENT_ACTION_DOWN;
             } else if (actionMasked == AMOTION_EVENT_ACTION_POINTER_UP) {
@@ -201,13 +201,14 @@
  */
 static std::optional<NotifyMotionArgs> removeStylusPointerIds(const NotifyMotionArgs& args) {
     std::set<int32_t> stylusPointerIds;
-    for (uint32_t i = 0; i < args.pointerCount; i++) {
+    for (uint32_t i = 0; i < args.getPointerCount(); i++) {
         if (isStylusToolType(args.pointerProperties[i].toolType)) {
             stylusPointerIds.insert(args.pointerProperties[i].id);
         }
     }
     NotifyMotionArgs withoutStylusPointers = removePointerIds(args, stylusPointerIds);
-    if (withoutStylusPointers.pointerCount == 0 || withoutStylusPointers.action == ACTION_UNKNOWN) {
+    if (withoutStylusPointers.getPointerCount() == 0 ||
+        withoutStylusPointers.action == ACTION_UNKNOWN) {
         return std::nullopt;
     }
     return withoutStylusPointers;
@@ -272,7 +273,7 @@
 std::vector<NotifyMotionArgs> cancelSuppressedPointers(
         const NotifyMotionArgs& args, const std::set<int32_t>& oldSuppressedPointerIds,
         const std::set<int32_t>& newSuppressedPointerIds) {
-    LOG_ALWAYS_FATAL_IF(args.pointerCount == 0, "0 pointers in %s", args.dump().c_str());
+    LOG_ALWAYS_FATAL_IF(args.getPointerCount() == 0, "0 pointers in %s", args.dump().c_str());
 
     // First, let's remove the old suppressed pointers. They've already been canceled previously.
     NotifyMotionArgs oldArgs = removePointerIds(args, oldSuppressedPointerIds);
@@ -284,7 +285,7 @@
     const int32_t actionMasked = MotionEvent::getActionMasked(args.action);
     // We will iteratively remove pointers from 'removedArgs'.
     NotifyMotionArgs removedArgs{oldArgs};
-    for (uint32_t i = 0; i < oldArgs.pointerCount; i++) {
+    for (uint32_t i = 0; i < oldArgs.getPointerCount(); i++) {
         const int32_t pointerId = oldArgs.pointerProperties[i].id;
         if (newSuppressedPointerIds.find(pointerId) == newSuppressedPointerIds.end()) {
             // This is a pointer that should not be canceled. Move on.
@@ -296,7 +297,7 @@
             continue;
         }
 
-        if (removedArgs.pointerCount == 1) {
+        if (removedArgs.getPointerCount() == 1) {
             // We are about to remove the last pointer, which means there will be no more gesture
             // remaining. This is identical to canceling all pointers, so just send a single CANCEL
             // event, without any of the preceding POINTER_UP with FLAG_CANCELED events.
@@ -314,7 +315,7 @@
     }
 
     // Now 'removedArgs' contains only pointers that are valid.
-    if (removedArgs.pointerCount <= 0 || removedArgs.action == ACTION_UNKNOWN) {
+    if (removedArgs.getPointerCount() <= 0 || removedArgs.action == ACTION_UNKNOWN) {
         return out;
     }
     out.push_back(removedArgs);
@@ -473,7 +474,7 @@
 UnwantedInteractionBlocker::~UnwantedInteractionBlocker() {}
 
 void SlotState::update(const NotifyMotionArgs& args) {
-    for (size_t i = 0; i < args.pointerCount; i++) {
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         const int32_t pointerId = args.pointerProperties[i].id;
         const int32_t resolvedAction = resolveActionForPointer(i, args.action);
         processPointerId(pointerId, resolvedAction);
@@ -571,7 +572,7 @@
                                                    const SlotState& newSlotState) {
     std::vector<::ui::InProgressTouchEvdev> touches;
 
-    for (size_t i = 0; i < args.pointerCount; i++) {
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         const int32_t pointerId = args.pointerProperties[i].id;
         touches.emplace_back(::ui::InProgressTouchEvdev());
         touches.back().major = args.pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR);
@@ -660,7 +661,7 @@
 
     // 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++) {
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         const int32_t pointerId = args.pointerProperties[i].id;
         std::optional<size_t> slot = oldSlotState.getSlotForPointerId(pointerId);
         if (!slot) {
diff --git a/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp b/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp
index f65533e..c5cf083 100644
--- a/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp
+++ b/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp
@@ -30,12 +30,14 @@
 
 namespace android::inputdispatcher {
 
+namespace {
+
 // An arbitrary device id.
 constexpr int32_t DEVICE_ID = 1;
 
 // The default pid and uid for windows created by the test.
 constexpr int32_t WINDOW_PID = 999;
-constexpr int32_t WINDOW_UID = 1001;
+constexpr gui::Uid WINDOW_UID{1001};
 
 static constexpr std::chrono::duration INJECT_EVENT_TIMEOUT = 5s;
 static constexpr std::chrono::nanoseconds DISPATCHING_TIMEOUT = 100ms;
@@ -109,6 +111,9 @@
 
     void notifyDropWindow(const sp<IBinder>&, float x, float y) override {}
 
+    void notifyDeviceInteraction(int32_t deviceId, nsecs_t timestamp,
+                                 const std::set<gui::Uid>& uids) override {}
+
     InputDispatcherConfiguration mConfig;
 };
 
@@ -348,6 +353,8 @@
     dispatcher.stop();
 }
 
+} // namespace
+
 BENCHMARK(benchmarkNotifyMotion);
 BENCHMARK(benchmarkInjectMotion);
 BENCHMARK(benchmarkOnWindowInfosChanged);
diff --git a/services/inputflinger/dispatcher/Android.bp b/services/inputflinger/dispatcher/Android.bp
index da4e42f..492551e 100644
--- a/services/inputflinger/dispatcher/Android.bp
+++ b/services/inputflinger/dispatcher/Android.bp
@@ -94,6 +94,7 @@
 
 cc_library_static {
     name: "libinputdispatcher",
+    host_supported: true,
     defaults: [
         "inputflinger_defaults",
         "libinputdispatcher_defaults",
diff --git a/services/inputflinger/dispatcher/DebugConfig.cpp b/services/inputflinger/dispatcher/DebugConfig.cpp
index 764194d..12122fd 100644
--- a/services/inputflinger/dispatcher/DebugConfig.cpp
+++ b/services/inputflinger/dispatcher/DebugConfig.cpp
@@ -30,11 +30,10 @@
 bool debugInboundEventDetails() {
     if (!IS_DEBUGGABLE_BUILD) {
         static const bool DEBUG_INBOUND_EVENT_DETAILS =
-                __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "InboundEvent",
-                                          ANDROID_LOG_INFO);
+                android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "InboundEvent");
         return DEBUG_INBOUND_EVENT_DETAILS;
     }
-    return __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "InboundEvent", ANDROID_LOG_INFO);
+    return android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "InboundEvent");
 }
 
 } // namespace android::inputdispatcher
diff --git a/services/inputflinger/dispatcher/DebugConfig.h b/services/inputflinger/dispatcher/DebugConfig.h
index 0e260a7..7a41d68 100644
--- a/services/inputflinger/dispatcher/DebugConfig.h
+++ b/services/inputflinger/dispatcher/DebugConfig.h
@@ -18,8 +18,7 @@
 
 #define LOG_TAG "InputDispatcher"
 
-#include <log/log.h>
-#include <log/log_event_list.h>
+#include <android-base/logging.h>
 
 namespace android::inputdispatcher {
 
@@ -42,14 +41,14 @@
  * Enable this via "adb shell setprop log.tag.InputDispatcherOutboundEvent DEBUG" (requires restart)
  */
 const bool DEBUG_OUTBOUND_EVENT_DETAILS =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "OutboundEvent", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "OutboundEvent");
 
 /**
  * Log debug messages about the dispatch cycle.
  * Enable this via "adb shell setprop log.tag.InputDispatcherDispatchCycle DEBUG" (requires restart)
  */
 const bool DEBUG_DISPATCH_CYCLE =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "DispatchCycle", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "DispatchCycle");
 
 /**
  * Log debug messages about channel creation
@@ -57,28 +56,28 @@
  * restart)
  */
 const bool DEBUG_CHANNEL_CREATION =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "ChannelCreation", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "ChannelCreation");
 
 /**
  * Log debug messages about input event injection.
  * Enable this via "adb shell setprop log.tag.InputDispatcherInjection DEBUG" (requires restart)
  */
 const bool DEBUG_INJECTION =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Injection", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "Injection");
 
 /**
  * Log debug messages about input focus tracking.
  * Enable this via "adb shell setprop log.tag.InputDispatcherFocus DEBUG" (requires restart)
  */
 const bool DEBUG_FOCUS =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Focus", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "Focus");
 
 /**
  * Log debug messages about touch mode event
  * Enable this via "adb shell setprop log.tag.InputDispatcherTouchMode DEBUG" (requires restart)
  */
 const bool DEBUG_TOUCH_MODE =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "TouchMode", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "TouchMode");
 
 /**
  * Log debug messages about touch occlusion
@@ -90,13 +89,20 @@
  * Enable this via "adb shell setprop log.tag.InputDispatcherAppSwitch DEBUG" (requires restart)
  */
 const bool DEBUG_APP_SWITCH =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "AppSwitch", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "AppSwitch");
 
 /**
  * Log debug messages about hover events.
  * Enable this via "adb shell setprop log.tag.InputDispatcherHover DEBUG" (requires restart)
  */
 const bool DEBUG_HOVER =
-        __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Hover", ANDROID_LOG_INFO);
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "Hover");
+
+/**
+ * Crash if a bad stream from InputListener is detected.
+ * Enable this via "adb shell setprop log.tag.InputDispatcherVerifyEvents DEBUG" (requires restart)
+ */
+const bool DEBUG_VERIFY_EVENTS =
+        android::base::ShouldLog(android::base::LogSeverity::DEBUG, LOG_TAG "VerifyEvents");
 
 } // namespace android::inputdispatcher
diff --git a/services/inputflinger/dispatcher/Entry.cpp b/services/inputflinger/dispatcher/Entry.cpp
index b625a1b..a670ebe 100644
--- a/services/inputflinger/dispatcher/Entry.cpp
+++ b/services/inputflinger/dispatcher/Entry.cpp
@@ -352,7 +352,7 @@
     entry.transform.dump(transform, "transform");
     out << ", resolvedFlags=" << entry.resolvedFlags
         << ", targetFlags=" << entry.targetFlags.string() << ", transform=" << transform
-        << "} original =" << entry.eventEntry->getDescription();
+        << "} original: " << entry.eventEntry->getDescription();
     return out;
 }
 
diff --git a/services/inputflinger/dispatcher/InjectionState.cpp b/services/inputflinger/dispatcher/InjectionState.cpp
index c2d3ad6..053594b 100644
--- a/services/inputflinger/dispatcher/InjectionState.cpp
+++ b/services/inputflinger/dispatcher/InjectionState.cpp
@@ -20,7 +20,7 @@
 
 namespace android::inputdispatcher {
 
-InjectionState::InjectionState(const std::optional<int32_t>& targetUid)
+InjectionState::InjectionState(const std::optional<gui::Uid>& targetUid)
       : refCount(1),
         targetUid(targetUid),
         injectionResult(android::os::InputEventInjectionResult::PENDING),
diff --git a/services/inputflinger/dispatcher/InjectionState.h b/services/inputflinger/dispatcher/InjectionState.h
index d9e27ba..3a3f5ae 100644
--- a/services/inputflinger/dispatcher/InjectionState.h
+++ b/services/inputflinger/dispatcher/InjectionState.h
@@ -26,12 +26,12 @@
 struct InjectionState {
     mutable int32_t refCount;
 
-    std::optional<int32_t> targetUid;
+    std::optional<gui::Uid> targetUid;
     android::os::InputEventInjectionResult injectionResult; // initially PENDING
     bool injectionIsAsync;               // set to true if injection is not waiting for the result
     int32_t pendingForegroundDispatches; // the number of foreground dispatches in progress
 
-    explicit InjectionState(const std::optional<int32_t>& targetUid);
+    explicit InjectionState(const std::optional<gui::Uid>& targetUid);
     void release();
 
 private:
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index fbbb388..6f0f022 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -26,6 +26,7 @@
 #include <android/os/IInputConstants.h>
 #include <binder/Binder.h>
 #include <ftl/enum.h>
+#include <log/log_event_list.h>
 #if defined(__ANDROID__)
 #include <gui/SurfaceComposerClient.h>
 #endif
@@ -125,6 +126,10 @@
     return StringPrintf("%p", binder.get());
 }
 
+static std::string uidString(const gui::Uid& uid) {
+    return uid.toString();
+}
+
 inline int32_t getMotionEventActionPointerIndex(int32_t action) {
     return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >>
             AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
@@ -556,7 +561,7 @@
     return !info.inputConfig.test(gui::WindowInfo::InputConfig::NOT_TOUCHABLE) && !info.isSpy();
 }
 
-bool isWindowOwnedBy(const sp<WindowInfoHandle>& windowHandle, int32_t pid, int32_t uid) {
+bool isWindowOwnedBy(const sp<WindowInfoHandle>& windowHandle, int32_t pid, gui::Uid uid) {
     if (windowHandle == nullptr) {
         return false;
     }
@@ -576,14 +581,16 @@
         // The event was not injected, or the injected event does not target a window.
         return {};
     }
-    const int32_t uid = *entry.injectionState->targetUid;
+    const auto uid = *entry.injectionState->targetUid;
     if (window == nullptr) {
-        return StringPrintf("No valid window target for injection into uid %d.", uid);
+        return StringPrintf("No valid window target for injection into uid %s.",
+                            uid.toString().c_str());
     }
     if (entry.injectionState->targetUid != window->getInfo()->ownerUid) {
-        return StringPrintf("Injected event targeted at uid %d would be dispatched to window '%s' "
-                            "owned by uid %d.",
-                            uid, window->getName().c_str(), window->getInfo()->ownerUid);
+        return StringPrintf("Injected event targeted at uid %s would be dispatched to window '%s' "
+                            "owned by uid %s.",
+                            uid.toString().c_str(), window->getName().c_str(),
+                            window->getInfo()->ownerUid.toString().c_str());
     }
     return {};
 }
@@ -1955,7 +1962,7 @@
         ALOGD("dispatchEventToCurrentInputTargets");
     }
 
-    updateInteractionTokensLocked(*eventEntry, inputTargets);
+    processInteractionsLocked(*eventEntry, inputTargets);
 
     ALOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true
 
@@ -2579,18 +2586,13 @@
     if (entry.injectionState != nullptr) {
         std::string errs;
         for (const TouchedWindow& touchedWindow : tempTouchState.windows) {
-            if (touchedWindow.targetFlags.test(InputTarget::Flags::DISPATCH_AS_OUTSIDE)) {
-                // Allow ACTION_OUTSIDE events generated by targeted injection to be
-                // dispatched to any uid, since the coords will be zeroed out later.
-                continue;
-            }
             const auto err = verifyTargetedInjection(touchedWindow.windowHandle, entry);
             if (err) errs += "\n  - " + *err;
         }
         if (!errs.empty()) {
             ALOGW("Dropping targeted injection: At least one touched window is not owned by uid "
-                  "%d:%s",
-                  *entry.injectionState->targetUid, errs.c_str());
+                  "%s:%s",
+                  entry.injectionState->targetUid->toString().c_str(), errs.c_str());
             outInjectionResult = InputEventInjectionResult::TARGET_MISMATCH;
             return {};
         }
@@ -2602,7 +2604,7 @@
         sp<WindowInfoHandle> foregroundWindowHandle =
                 tempTouchState.getFirstForegroundWindowHandle();
         if (foregroundWindowHandle) {
-            const int32_t foregroundWindowUid = foregroundWindowHandle->getInfo()->ownerUid;
+            const auto foregroundWindowUid = foregroundWindowHandle->getInfo()->ownerUid;
             for (InputTarget& target : targets) {
                 if (target.flags.test(InputTarget::Flags::DISPATCH_AS_OUTSIDE)) {
                     sp<WindowInfoHandle> targetWindow =
@@ -2636,6 +2638,18 @@
                               targets);
     }
 
+    // During targeted injection, only allow owned targets to receive events
+    std::erase_if(targets, [&](const InputTarget& target) {
+        LOG_ALWAYS_FATAL_IF(target.windowHandle == nullptr);
+        const auto err = verifyTargetedInjection(target.windowHandle, entry);
+        if (err) {
+            LOG(WARNING) << "Dropping injected event from " << target.windowHandle->getName()
+                         << ": " << (*err);
+            return true;
+        }
+        return false;
+    });
+
     if (targets.empty()) {
         LOG(INFO) << "Dropping event because no targets were found: " << entry.getDescription();
         outInjectionResult = InputEventInjectionResult::FAILED;
@@ -2830,6 +2844,7 @@
     }
     InputTarget inputTarget;
     inputTarget.inputChannel = inputChannel;
+    inputTarget.windowHandle = windowHandle;
     inputTarget.flags = targetFlags;
     inputTarget.globalScaleFactor = windowHandle->getInfo()->globalScaleFactor;
     inputTarget.firstDownTimeInTarget = firstDownTimeInTarget;
@@ -2837,7 +2852,7 @@
     if (displayInfoIt != mDisplayInfos.end()) {
         inputTarget.displayTransform = displayInfoIt->second.transform;
     } else {
-        // DisplayInfo not found for this window on display windowInfo->displayId.
+        // DisplayInfo not found for this window on display windowHandle->getInfo()->displayId.
         // TODO(b/198444055): Make this an error message after 'setInputWindows' API is removed.
     }
     return inputTarget;
@@ -2953,8 +2968,8 @@
     TouchOcclusionInfo info;
     info.hasBlockingOcclusion = false;
     info.obscuringOpacity = 0;
-    info.obscuringUid = -1;
-    std::map<int32_t, float> opacityByUid;
+    info.obscuringUid = gui::Uid::INVALID;
+    std::map<gui::Uid, float> opacityByUid;
     for (const sp<WindowInfoHandle>& otherHandle : windowHandles) {
         if (windowHandle == otherHandle) {
             break; // All future windows are below us. Exit early.
@@ -2976,7 +2991,7 @@
                 break;
             }
             if (otherInfo->touchOcclusionMode == TouchOcclusionMode::USE_OPACITY) {
-                uint32_t uid = otherInfo->ownerUid;
+                const auto uid = otherInfo->ownerUid;
                 float opacity =
                         (opacityByUid.find(uid) == opacityByUid.end()) ? 0 : opacityByUid[uid];
                 // Given windows A and B:
@@ -3000,29 +3015,30 @@
 
 std::string InputDispatcher::dumpWindowForTouchOcclusion(const WindowInfo* info,
                                                          bool isTouchedWindow) const {
-    return StringPrintf(INDENT2 "* %spackage=%s/%" PRId32 ", id=%" PRId32 ", mode=%s, alpha=%.2f, "
+    return StringPrintf(INDENT2 "* %spackage=%s/%s, id=%" PRId32 ", mode=%s, alpha=%.2f, "
                                 "frame=[%" PRId32 ",%" PRId32 "][%" PRId32 ",%" PRId32
                                 "], touchableRegion=%s, window={%s}, inputConfig={%s}, "
                                 "hasToken=%s, applicationInfo.name=%s, applicationInfo.token=%s\n",
                         isTouchedWindow ? "[TOUCHED] " : "", info->packageName.c_str(),
-                        info->ownerUid, info->id, toString(info->touchOcclusionMode).c_str(),
-                        info->alpha, info->frameLeft, info->frameTop, info->frameRight,
-                        info->frameBottom, dumpRegion(info->touchableRegion).c_str(),
-                        info->name.c_str(), info->inputConfig.string().c_str(),
-                        toString(info->token != nullptr), info->applicationInfo.name.c_str(),
+                        info->ownerUid.toString().c_str(), info->id,
+                        toString(info->touchOcclusionMode).c_str(), info->alpha, info->frameLeft,
+                        info->frameTop, info->frameRight, info->frameBottom,
+                        dumpRegion(info->touchableRegion).c_str(), info->name.c_str(),
+                        info->inputConfig.string().c_str(), toString(info->token != nullptr),
+                        info->applicationInfo.name.c_str(),
                         binderToString(info->applicationInfo.token).c_str());
 }
 
 bool InputDispatcher::isTouchTrustedLocked(const TouchOcclusionInfo& occlusionInfo) const {
     if (occlusionInfo.hasBlockingOcclusion) {
-        ALOGW("Untrusted touch due to occlusion by %s/%d", occlusionInfo.obscuringPackage.c_str(),
-              occlusionInfo.obscuringUid);
+        ALOGW("Untrusted touch due to occlusion by %s/%s", occlusionInfo.obscuringPackage.c_str(),
+              occlusionInfo.obscuringUid.toString().c_str());
         return false;
     }
     if (occlusionInfo.obscuringOpacity > mMaximumObscuringOpacityForTouch) {
-        ALOGW("Untrusted touch due to occlusion by %s/%d (obscuring opacity = "
+        ALOGW("Untrusted touch due to occlusion by %s/%s (obscuring opacity = "
               "%.2f, maximum allowed = %.2f)",
-              occlusionInfo.obscuringPackage.c_str(), occlusionInfo.obscuringUid,
+              occlusionInfo.obscuringPackage.c_str(), occlusionInfo.obscuringUid.toString().c_str(),
               occlusionInfo.obscuringOpacity, mMaximumObscuringOpacityForTouch);
         return false;
     }
@@ -3292,11 +3308,8 @@
 
             if (!connection->inputState.trackKey(keyEntry, dispatchEntry->resolvedAction,
                                                  dispatchEntry->resolvedFlags)) {
-                if (DEBUG_DISPATCH_CYCLE) {
-                    ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent key "
-                          "event",
-                          connection->getInputChannelName().c_str());
-                }
+                LOG(WARNING) << "channel " << connection->getInputChannelName()
+                             << "~ dropping inconsistent event: " << *dispatchEntry;
                 return; // skip the inconsistent event
             }
             break;
@@ -3349,11 +3362,8 @@
 
             if (!connection->inputState.trackMotion(motionEntry, dispatchEntry->resolvedAction,
                                                     dispatchEntry->resolvedFlags)) {
-                if (DEBUG_DISPATCH_CYCLE) {
-                    ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent motion "
-                          "event",
-                          connection->getInputChannelName().c_str());
-                }
+                LOG(WARNING) << "channel " << connection->getInputChannelName()
+                             << "~ dropping inconsistent event: " << *dispatchEntry;
                 return; // skip the inconsistent event
             }
 
@@ -3408,38 +3418,49 @@
 }
 
 /**
- * This function is purely for debugging. It helps us understand where the user interaction
- * was taking place. For example, if user is touching launcher, we will see a log that user
- * started interacting with launcher. In that example, the event would go to the wallpaper as well.
- * We will see both launcher and wallpaper in that list.
- * Once the interaction with a particular set of connections starts, no new logs will be printed
- * until the set of interacted connections changes.
+ * This function is for debugging and metrics collection. It has two roles.
  *
- * The following items are skipped, to reduce the logspam:
- * ACTION_OUTSIDE: any windows that are receiving ACTION_OUTSIDE are not logged
- * ACTION_UP: any windows that receive ACTION_UP are not logged (for both keys and motions).
- * This includes situations like the soft BACK button key. When the user releases (lifts up the
- * finger) the back button, then navigation bar will inject KEYCODE_BACK with ACTION_UP.
- * Both of those ACTION_UP events would not be logged
+ * The first role is to log input interaction with windows, which helps determine what the user was
+ * interacting with. For example, if user is touching launcher, we will see an input_interaction log
+ * that user started interacting with launcher window, as well as any other window that received
+ * that gesture, such as the wallpaper or other spy windows. A new input_interaction is only logged
+ * when the set of tokens that received the event changes. It is not logged again as long as the
+ * user is interacting with the same windows.
+ *
+ * The second role is to track input device activity for metrics collection. For each input event,
+ * we report the set of UIDs that the input device interacted with to the policy. Unlike for the
+ * input_interaction logs, the device interaction is reported even when the set of interaction
+ * tokens do not change.
+ *
+ * For these purposes, we do not count ACTION_OUTSIDE, ACTION_UP and ACTION_CANCEL actions as
+ * interaction. This includes up and cancel events for both keys and motions.
  */
-void InputDispatcher::updateInteractionTokensLocked(const EventEntry& entry,
-                                                    const std::vector<InputTarget>& targets) {
+void InputDispatcher::processInteractionsLocked(const EventEntry& entry,
+                                                const std::vector<InputTarget>& targets) {
+    int32_t deviceId;
+    nsecs_t eventTime;
     // Skip ACTION_UP events, and all events other than keys and motions
     if (entry.type == EventEntry::Type::KEY) {
         const KeyEntry& keyEntry = static_cast<const KeyEntry&>(entry);
         if (keyEntry.action == AKEY_EVENT_ACTION_UP) {
             return;
         }
+        deviceId = keyEntry.deviceId;
+        eventTime = keyEntry.eventTime;
     } else if (entry.type == EventEntry::Type::MOTION) {
         const MotionEntry& motionEntry = static_cast<const MotionEntry&>(entry);
         if (motionEntry.action == AMOTION_EVENT_ACTION_UP ||
-            motionEntry.action == AMOTION_EVENT_ACTION_CANCEL) {
+            motionEntry.action == AMOTION_EVENT_ACTION_CANCEL ||
+            MotionEvent::getActionMasked(motionEntry.action) == AMOTION_EVENT_ACTION_POINTER_UP) {
             return;
         }
+        deviceId = motionEntry.deviceId;
+        eventTime = motionEntry.eventTime;
     } else {
         return; // Not a key or a motion
     }
 
+    std::set<gui::Uid> interactionUids;
     std::unordered_set<sp<IBinder>, StrongPointerHash<IBinder>> newConnectionTokens;
     std::vector<std::shared_ptr<Connection>> newConnections;
     for (const InputTarget& target : targets) {
@@ -3454,7 +3475,18 @@
         }
         newConnectionTokens.insert(std::move(token));
         newConnections.emplace_back(connection);
+        if (target.windowHandle) {
+            interactionUids.emplace(target.windowHandle->getInfo()->ownerUid);
+        }
     }
+
+    auto command = [this, deviceId, eventTime, uids = std::move(interactionUids)]()
+                           REQUIRES(mLock) {
+                               scoped_unlock unlock(mLock);
+                               mPolicy.notifyDeviceInteraction(deviceId, eventTime, uids);
+                           };
+    postCommandLocked(std::move(command));
+
     if (newConnectionTokens == mInteractionConnectionTokens) {
         return; // no change
     }
@@ -4112,11 +4144,11 @@
         }
     }
 
-    if (action == AMOTION_EVENT_ACTION_DOWN) {
-        LOG_ALWAYS_FATAL_IF(splitDownTime != originalMotionEntry.eventTime,
-                            "Split motion event has mismatching downTime and eventTime for "
-                            "ACTION_DOWN, motionEntry=%s, splitDownTime=%" PRId64,
-                            originalMotionEntry.getDescription().c_str(), splitDownTime);
+    if (action == AMOTION_EVENT_ACTION_DOWN && splitDownTime != originalMotionEntry.eventTime) {
+        logDispatchStateLocked();
+        LOG_ALWAYS_FATAL("Split motion event has mismatching downTime and eventTime for "
+                         "ACTION_DOWN, motionEntry=%s, splitDownTime=%" PRId64,
+                         originalMotionEntry.getDescription().c_str(), splitDownTime);
     }
 
     int32_t newId = mIdGenerator.nextId();
@@ -4300,7 +4332,7 @@
               args.actionButton, args.flags, args.metaState, args.buttonState, args.edgeFlags,
               args.xPrecision, args.yPrecision, args.xCursorPosition, args.yCursorPosition,
               args.downTime);
-        for (uint32_t i = 0; i < args.pointerCount; i++) {
+        for (uint32_t i = 0; i < args.getPointerCount(); i++) {
             ALOGD("  Pointer %d: id=%d, toolType=%s, x=%f, y=%f, pressure=%f, size=%f, "
                   "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, orientation=%f",
                   i, args.pointerProperties[i].id,
@@ -4317,13 +4349,27 @@
         }
     }
 
-    Result<void> motionCheck = validateMotionEvent(args.action, args.actionButton,
-                                                   args.pointerCount, args.pointerProperties);
+    Result<void> motionCheck =
+            validateMotionEvent(args.action, args.actionButton, args.getPointerCount(),
+                                args.pointerProperties.data());
     if (!motionCheck.ok()) {
         LOG(ERROR) << "Invalid event: " << args.dump() << "; reason: " << motionCheck.error();
         return;
     }
 
+    if (DEBUG_VERIFY_EVENTS) {
+        auto [it, _] =
+                mVerifiersByDisplay.try_emplace(args.displayId,
+                                                StringPrintf("display %" PRId32, args.displayId));
+        Result<void> result =
+                it->second.processMovement(args.deviceId, args.action, args.getPointerCount(),
+                                           args.pointerProperties.data(), args.pointerCoords.data(),
+                                           args.flags);
+        if (!result.ok()) {
+            LOG(FATAL) << "Bad stream: " << result.error() << " caused by " << args.dump();
+        }
+    }
+
     uint32_t policyFlags = args.policyFlags;
     policyFlags |= POLICY_FLAG_TRUSTED;
 
@@ -4363,8 +4409,8 @@
                              args.metaState, args.buttonState, args.classification,
                              displayTransform, args.xPrecision, args.yPrecision,
                              args.xCursorPosition, args.yCursorPosition, displayTransform,
-                             args.downTime, args.eventTime, args.pointerCount,
-                             args.pointerProperties, args.pointerCoords);
+                             args.downTime, args.eventTime, args.getPointerCount(),
+                             args.pointerProperties.data(), args.pointerCoords.data());
 
             policyFlags |= POLICY_FLAG_FILTERED;
             if (!mPolicy.filterInputEvent(event, policyFlags)) {
@@ -4382,8 +4428,9 @@
                                               args.buttonState, args.classification, args.edgeFlags,
                                               args.xPrecision, args.yPrecision,
                                               args.xCursorPosition, args.yCursorPosition,
-                                              args.downTime, args.pointerCount,
-                                              args.pointerProperties, args.pointerCoords);
+                                              args.downTime, args.getPointerCount(),
+                                              args.pointerProperties.data(),
+                                              args.pointerCoords.data());
 
         if (args.id != android::os::IInputConstants::INVALID_INPUT_EVENT_ID &&
             IdGenerator::getSource(args.id) == IdGenerator::Source::INPUT_READER &&
@@ -4492,7 +4539,7 @@
 }
 
 InputEventInjectionResult InputDispatcher::injectInputEvent(const InputEvent* event,
-                                                            std::optional<int32_t> targetUid,
+                                                            std::optional<gui::Uid> targetUid,
                                                             InputEventInjectionSync syncMode,
                                                             std::chrono::milliseconds timeout,
                                                             uint32_t policyFlags) {
@@ -4503,7 +4550,7 @@
     }
 
     if (debugInboundEventDetails()) {
-        LOG(DEBUG) << __func__ << ": targetUid=" << toString(targetUid)
+        LOG(DEBUG) << __func__ << ": targetUid=" << toString(targetUid, &uidString)
                    << ", syncMode=" << ftl::enum_string(syncMode) << ", timeout=" << timeout.count()
                    << "ms, policyFlags=0x" << std::hex << policyFlags << std::dec
                    << ", event=" << *event;
@@ -4948,8 +4995,8 @@
                 ALOGD("%s", log.c_str());
             }
         }
-        ALOGW("Dropping untrusted touch event due to %s/%d", occlusionInfo.obscuringPackage.c_str(),
-              occlusionInfo.obscuringUid);
+        ALOGW("Dropping untrusted touch event due to %s/%s", occlusionInfo.obscuringPackage.c_str(),
+              occlusionInfo.obscuringUid.toString().c_str());
         return false;
     }
 
@@ -5311,15 +5358,16 @@
     mLooper->wake();
 }
 
-bool InputDispatcher::setInTouchMode(bool inTouchMode, int32_t pid, int32_t uid, bool hasPermission,
-                                     int32_t displayId) {
+bool InputDispatcher::setInTouchMode(bool inTouchMode, int32_t pid, gui::Uid uid,
+                                     bool hasPermission, int32_t displayId) {
     bool needWake = false;
     {
         std::scoped_lock lock(mLock);
         ALOGD_IF(DEBUG_TOUCH_MODE,
-                 "Request to change touch mode to %s (calling pid=%d, uid=%d, "
+                 "Request to change touch mode to %s (calling pid=%d, uid=%s, "
                  "hasPermission=%s, target displayId=%d, mTouchModePerDisplay[displayId]=%s)",
-                 toString(inTouchMode), pid, uid, toString(hasPermission), displayId,
+                 toString(inTouchMode), pid, uid.toString().c_str(), toString(hasPermission),
+                 displayId,
                  mTouchModePerDisplay.count(displayId) == 0
                          ? "not set"
                          : std::to_string(mTouchModePerDisplay[displayId]).c_str());
@@ -5331,9 +5379,9 @@
         if (!hasPermission) {
             if (!focusedWindowIsOwnedByLocked(pid, uid) &&
                 !recentWindowsAreOwnedByLocked(pid, uid)) {
-                ALOGD("Touch mode switch rejected, caller (pid=%d, uid=%d) doesn't own the focused "
+                ALOGD("Touch mode switch rejected, caller (pid=%d, uid=%s) doesn't own the focused "
                       "window nor none of the previously interacted window",
-                      pid, uid);
+                      pid, uid.toString().c_str());
                 return false;
             }
         }
@@ -5349,7 +5397,7 @@
     return true;
 }
 
-bool InputDispatcher::focusedWindowIsOwnedByLocked(int32_t pid, int32_t uid) {
+bool InputDispatcher::focusedWindowIsOwnedByLocked(int32_t pid, gui::Uid uid) {
     const sp<IBinder> focusedToken = mFocusResolver.getFocusedWindowToken(mFocusedDisplayId);
     if (focusedToken == nullptr) {
         return false;
@@ -5358,7 +5406,7 @@
     return isWindowOwnedBy(windowHandle, pid, uid);
 }
 
-bool InputDispatcher::recentWindowsAreOwnedByLocked(int32_t pid, int32_t uid) {
+bool InputDispatcher::recentWindowsAreOwnedByLocked(int32_t pid, gui::Uid uid) {
     return std::find_if(mInteractionConnectionTokens.begin(), mInteractionConnectionTokens.end(),
                         [&](const sp<IBinder>& connectionToken) REQUIRES(mLock) {
                             const sp<WindowInfoHandle> windowHandle =
@@ -5643,10 +5691,11 @@
                                          windowInfo->applicationInfo.name.c_str(),
                                          binderToString(windowInfo->applicationInfo.token).c_str());
                     dump += dumpRegion(windowInfo->touchableRegion);
-                    dump += StringPrintf(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%" PRId64
+                    dump += StringPrintf(", ownerPid=%d, ownerUid=%s, dispatchingTimeout=%" PRId64
                                          "ms, hasToken=%s, "
                                          "touchOcclusionMode=%s\n",
-                                         windowInfo->ownerPid, windowInfo->ownerUid,
+                                         windowInfo->ownerPid,
+                                         windowInfo->ownerUid.toString().c_str(),
                                          millis(windowInfo->dispatchingTimeout),
                                          binderToString(windowInfo->token).c_str(),
                                          toString(windowInfo->touchOcclusionMode).c_str());
@@ -6549,7 +6598,7 @@
  * this method can be safely called from any thread, as long as you've ensured that
  * the work you are interested in completing has already been queued.
  */
-bool InputDispatcher::waitForIdle() {
+bool InputDispatcher::waitForIdle() const {
     /**
      * Timeout should represent the longest possible time that a device might spend processing
      * events and commands.
@@ -6668,6 +6717,7 @@
         std::erase(mIneligibleDisplaysForPointerCapture, displayId);
         // Remove the associated touch mode state.
         mTouchModePerDisplay.erase(displayId);
+        mVerifiersByDisplay.erase(displayId);
     } // release lock
 
     // Wake up poll loop since it may need to make new input dispatching choices.
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 6b22f2f..2038bb8 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -89,7 +89,7 @@
 
     void dump(std::string& dump) override;
     void monitor() override;
-    bool waitForIdle() override;
+    bool waitForIdle() const override;
     status_t start() override;
     status_t stop() override;
 
@@ -104,7 +104,7 @@
     void notifyPointerCaptureChanged(const NotifyPointerCaptureChangedArgs& args) override;
 
     android::os::InputEventInjectionResult injectInputEvent(
-            const InputEvent* event, std::optional<int32_t> targetUid,
+            const InputEvent* event, std::optional<gui::Uid> targetUid,
             android::os::InputEventInjectionSync syncMode, std::chrono::milliseconds timeout,
             uint32_t policyFlags) override;
 
@@ -119,7 +119,7 @@
     void setFocusedDisplay(int32_t displayId) override;
     void setInputDispatchMode(bool enabled, bool frozen) override;
     void setInputFilterEnabled(bool enabled) override;
-    bool setInTouchMode(bool inTouchMode, int32_t pid, int32_t uid, bool hasPermission,
+    bool setInTouchMode(bool inTouchMode, int32_t pid, gui::Uid uid, bool hasPermission,
                         int32_t displayId) override;
     void setMaximumObscuringOpacityForTouch(float opacity) override;
 
@@ -169,10 +169,10 @@
     InputDispatcherPolicyInterface& mPolicy;
     android::InputDispatcherConfiguration mConfig GUARDED_BY(mLock);
 
-    std::mutex mLock;
+    mutable std::mutex mLock;
 
     std::condition_variable mDispatcherIsAlive;
-    std::condition_variable mDispatcherEnteredIdle;
+    mutable std::condition_variable mDispatcherEnteredIdle;
 
     sp<Looper> mLooper;
 
@@ -202,7 +202,7 @@
 
     DropReason mLastDropReason GUARDED_BY(mLock);
 
-    const IdGenerator mIdGenerator;
+    const IdGenerator mIdGenerator GUARDED_BY(mLock);
 
     int64_t mWindowInfosVsyncId GUARDED_BY(mLock);
 
@@ -447,8 +447,8 @@
     // when switching touch mode state).
     std::unordered_set<sp<IBinder>, StrongPointerHash<IBinder>> mInteractionConnectionTokens
             GUARDED_BY(mLock);
-    void updateInteractionTokensLocked(const EventEntry& entry,
-                                       const std::vector<InputTarget>& targets) REQUIRES(mLock);
+    void processInteractionsLocked(const EventEntry& entry, const std::vector<InputTarget>& targets)
+            REQUIRES(mLock);
 
     // Dispatch inbound events.
     bool dispatchConfigurationChangedLocked(nsecs_t currentTime,
@@ -574,7 +574,7 @@
         bool hasBlockingOcclusion;
         float obscuringOpacity;
         std::string obscuringPackage;
-        int32_t obscuringUid;
+        gui::Uid obscuringUid = gui::Uid::INVALID;
         std::vector<std::string> debugInfo;
     };
 
@@ -649,7 +649,7 @@
     // splitDownTime refers to the time of first 'down' event on that particular target
     std::unique_ptr<MotionEntry> splitMotionEvent(const MotionEntry& originalMotionEntry,
                                                   std::bitset<MAX_POINTER_ID + 1> pointerIds,
-                                                  nsecs_t splitDownTime);
+                                                  nsecs_t splitDownTime) REQUIRES(mLock);
 
     // Reset and drop everything the dispatcher is doing.
     void resetAndDropEverythingLocked(const char* reason) REQUIRES(mLock);
@@ -683,6 +683,7 @@
                                   const std::string& reason) REQUIRES(mLock);
     void updateLastAnrStateLocked(const std::string& windowLabel, const std::string& reason)
             REQUIRES(mLock);
+    std::map<int32_t /*displayId*/, InputVerifier> mVerifiersByDisplay;
     bool afterKeyEventLockedInterruptable(const std::shared_ptr<Connection>& connection,
                                           DispatchEntry* dispatchEntry, KeyEntry& keyEntry,
                                           bool handled) REQUIRES(mLock);
@@ -702,8 +703,8 @@
     void traceWaitQueueLength(const Connection& connection);
 
     // Check window ownership
-    bool focusedWindowIsOwnedByLocked(int32_t pid, int32_t uid) REQUIRES(mLock);
-    bool recentWindowsAreOwnedByLocked(int32_t pid, int32_t uid) REQUIRES(mLock);
+    bool focusedWindowIsOwnedByLocked(int32_t pid, gui::Uid uid) REQUIRES(mLock);
+    bool recentWindowsAreOwnedByLocked(int32_t pid, gui::Uid uid) REQUIRES(mLock);
 
     sp<InputReporterInterface> mReporter;
 
diff --git a/services/inputflinger/dispatcher/InputState.cpp b/services/inputflinger/dispatcher/InputState.cpp
index 4652c2d..2fcb89a 100644
--- a/services/inputflinger/dispatcher/InputState.cpp
+++ b/services/inputflinger/dispatcher/InputState.cpp
@@ -93,11 +93,7 @@
                 mMotionMementos.erase(mMotionMementos.begin() + index);
                 return true;
             }
-            if (DEBUG_OUTBOUND_EVENT_DETAILS) {
-                ALOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, "
-                      "displayId=%" PRId32 ", actionMasked=%d",
-                      entry.deviceId, entry.source, entry.displayId, actionMasked);
-            }
+
             return false;
         }
 
@@ -150,11 +146,7 @@
                     return true;
                 }
             }
-            if (DEBUG_OUTBOUND_EVENT_DETAILS) {
-                ALOGD("Dropping inconsistent motion pointer up/down or move event: "
-                      "deviceId=%d, source=%08x, displayId=%" PRId32 ", actionMasked=%d",
-                      entry.deviceId, entry.source, entry.displayId, actionMasked);
-            }
+
             return false;
         }
 
@@ -164,11 +156,7 @@
                 mMotionMementos.erase(mMotionMementos.begin() + index);
                 return true;
             }
-            if (DEBUG_OUTBOUND_EVENT_DETAILS) {
-                ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x, "
-                      "displayId=%" PRId32,
-                      entry.deviceId, entry.source, entry.displayId);
-            }
+
             return false;
         }
 
diff --git a/services/inputflinger/dispatcher/InputTarget.h b/services/inputflinger/dispatcher/InputTarget.h
index 7b12f81..3bf8b68 100644
--- a/services/inputflinger/dispatcher/InputTarget.h
+++ b/services/inputflinger/dispatcher/InputTarget.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <ftl/flags.h>
+#include <gui/WindowInfo.h>
 #include <gui/constants.h>
 #include <input/InputTransport.h>
 #include <ui/Transform.h>
@@ -114,6 +115,10 @@
     // Transform per pointerId.
     ui::Transform pointerTransforms[MAX_POINTERS];
 
+    // The window that this input target is being dispatched to. It is possible for this to be
+    // null for cases like global monitors.
+    sp<gui::WindowInfoHandle> windowHandle;
+
     void addPointers(std::bitset<MAX_POINTER_ID + 1> pointerIds, const ui::Transform& transform);
     void setDefaultPointerTransform(const ui::Transform& transform);
 
diff --git a/services/inputflinger/dispatcher/include/InputDispatcherInterface.h b/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
index c752ddd..e8c95c6 100644
--- a/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
+++ b/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
@@ -50,7 +50,7 @@
      * Return true if the dispatcher is idle.
      * Return false if the timeout waiting for the dispatcher to become idle has expired.
      */
-    virtual bool waitForIdle() = 0;
+    virtual bool waitForIdle() const = 0;
 
     /* Make the dispatcher start processing events.
      *
@@ -76,7 +76,7 @@
      * perform all necessary permission checks prior to injecting events.
      */
     virtual android::os::InputEventInjectionResult injectInputEvent(
-            const InputEvent* event, std::optional<int32_t> targetUid,
+            const InputEvent* event, std::optional<gui::Uid> targetUid,
             android::os::InputEventInjectionSync syncMode, std::chrono::milliseconds timeout,
             uint32_t policyFlags) = 0;
 
@@ -134,7 +134,7 @@
      *
      * Returns true when changing touch mode state.
      */
-    virtual bool setInTouchMode(bool inTouchMode, int32_t pid, int32_t uid, bool hasPermission,
+    virtual bool setInTouchMode(bool inTouchMode, int32_t pid, gui::Uid uid, bool hasPermission,
                                 int32_t displayId) = 0;
 
     /**
diff --git a/services/inputflinger/dispatcher/include/InputDispatcherPolicyInterface.h b/services/inputflinger/dispatcher/include/InputDispatcherPolicyInterface.h
index 5539915..ec15b8d 100644
--- a/services/inputflinger/dispatcher/include/InputDispatcherPolicyInterface.h
+++ b/services/inputflinger/dispatcher/include/InputDispatcherPolicyInterface.h
@@ -22,6 +22,7 @@
 #include <gui/InputApplication.h>
 #include <input/Input.h>
 #include <utils/RefBase.h>
+#include <set>
 
 namespace android {
 
@@ -136,6 +137,10 @@
 
     /* Notifies the policy that the drag window has moved over to another window */
     virtual void notifyDropWindow(const sp<IBinder>& token, float x, float y) = 0;
+
+    /* Notifies the policy that there was an input device interaction with apps. */
+    virtual void notifyDeviceInteraction(int32_t deviceId, nsecs_t timestamp,
+                                         const std::set<gui::Uid>& uids) = 0;
 };
 
 } // namespace android
diff --git a/services/inputflinger/include/KeyCodeClassifications.h b/services/inputflinger/include/KeyCodeClassifications.h
new file mode 100644
index 0000000..a09b02e
--- /dev/null
+++ b/services/inputflinger/include/KeyCodeClassifications.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/input.h>
+#include <set>
+
+namespace android {
+
+/** The set of all Android key codes that are required for a device to be classified as a D-pad. */
+static const std::set<int32_t> DPAD_REQUIRED_KEYCODES = {
+        AKEYCODE_DPAD_UP,    AKEYCODE_DPAD_DOWN,   AKEYCODE_DPAD_LEFT,
+        AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_CENTER,
+};
+
+/** The set of all Android key codes that correspond to D-pad keys. */
+static const std::set<int32_t> DPAD_ALL_KEYCODES = {
+        AKEYCODE_DPAD_UP,       AKEYCODE_DPAD_DOWN,      AKEYCODE_DPAD_LEFT,
+        AKEYCODE_DPAD_RIGHT,    AKEYCODE_DPAD_CENTER,    AKEYCODE_DPAD_UP_LEFT,
+        AKEYCODE_DPAD_UP_RIGHT, AKEYCODE_DPAD_DOWN_LEFT, AKEYCODE_DPAD_DOWN_RIGHT,
+};
+
+/** The set of all Android key codes that correspond to gamepad buttons. */
+static const std::set<int32_t> GAMEPAD_KEYCODES = {
+        AKEYCODE_BUTTON_A,      AKEYCODE_BUTTON_B,      AKEYCODE_BUTTON_C,    //
+        AKEYCODE_BUTTON_X,      AKEYCODE_BUTTON_Y,      AKEYCODE_BUTTON_Z,    //
+        AKEYCODE_BUTTON_L1,     AKEYCODE_BUTTON_R1,                           //
+        AKEYCODE_BUTTON_L2,     AKEYCODE_BUTTON_R2,                           //
+        AKEYCODE_BUTTON_THUMBL, AKEYCODE_BUTTON_THUMBR,                       //
+        AKEYCODE_BUTTON_START,  AKEYCODE_BUTTON_SELECT, AKEYCODE_BUTTON_MODE, //
+};
+
+/** The set of all Android key codes that correspond to buttons (bit-switches) on a stylus. */
+static const std::set<int32_t> STYLUS_BUTTON_KEYCODES = {
+        AKEYCODE_STYLUS_BUTTON_PRIMARY,
+        AKEYCODE_STYLUS_BUTTON_SECONDARY,
+        AKEYCODE_STYLUS_BUTTON_TERTIARY,
+        AKEYCODE_STYLUS_BUTTON_TAIL,
+};
+
+} // namespace android
diff --git a/services/inputflinger/include/NotifyArgs.h b/services/inputflinger/include/NotifyArgs.h
index 7d29dd9..736b1e0 100644
--- a/services/inputflinger/include/NotifyArgs.h
+++ b/services/inputflinger/include/NotifyArgs.h
@@ -104,9 +104,9 @@
     MotionClassification classification;
     int32_t edgeFlags;
 
-    uint32_t pointerCount;
-    PointerProperties pointerProperties[MAX_POINTERS];
-    PointerCoords pointerCoords[MAX_POINTERS];
+    // Vectors 'pointerProperties' and 'pointerCoords' must always have the same number of elements
+    std::vector<PointerProperties> pointerProperties;
+    std::vector<PointerCoords> pointerCoords;
     float xPrecision;
     float yPrecision;
     /**
@@ -131,11 +131,13 @@
                      float yCursorPosition, nsecs_t downTime,
                      const std::vector<TouchVideoFrame>& videoFrames);
 
-    NotifyMotionArgs(const NotifyMotionArgs& other);
+    NotifyMotionArgs(const NotifyMotionArgs& other) = default;
     NotifyMotionArgs& operator=(const android::NotifyMotionArgs&) = default;
 
     bool operator==(const NotifyMotionArgs& rhs) const;
 
+    inline size_t getPointerCount() const { return pointerProperties.size(); }
+
     std::string dump() const;
 };
 
diff --git a/services/inputflinger/reader/Android.bp b/services/inputflinger/reader/Android.bp
index b0edb57..ccb8773 100644
--- a/services/inputflinger/reader/Android.bp
+++ b/services/inputflinger/reader/Android.bp
@@ -98,12 +98,14 @@
         android: {
             shared_libs: [
                 "libinput",
+                "libstatspull",
             ],
         },
         host: {
             static_libs: [
                 "libinput",
                 "libbinder",
+                "libstatspull",
             ],
         },
     },
diff --git a/services/inputflinger/reader/EventHub.cpp b/services/inputflinger/reader/EventHub.cpp
index 0354164..4d0e13e 100644
--- a/services/inputflinger/reader/EventHub.cpp
+++ b/services/inputflinger/reader/EventHub.cpp
@@ -58,6 +58,8 @@
 
 #include "EventHub.h"
 
+#include "KeyCodeClassifications.h"
+
 #define INDENT "  "
 #define INDENT2 "    "
 #define INDENT3 "      "
@@ -189,14 +191,6 @@
     return out;
 }
 
-/* The set of all Android key codes that correspond to buttons (bit-switches) on a stylus. */
-static constexpr std::array<int32_t, 4> STYLUS_BUTTON_KEYCODES = {
-        AKEYCODE_STYLUS_BUTTON_PRIMARY,
-        AKEYCODE_STYLUS_BUTTON_SECONDARY,
-        AKEYCODE_STYLUS_BUTTON_TERTIARY,
-        AKEYCODE_STYLUS_BUTTON_TAIL,
-};
-
 /**
  * Return true if name matches "v4l-touch*"
  */
@@ -870,6 +864,30 @@
                         strerror(errno));
 }
 
+void EventHub::populateDeviceAbsoluteAxisInfo(Device& device) {
+    for (int axis = 0; axis <= ABS_MAX; axis++) {
+        if (!device.absBitmask.test(axis)) {
+            continue;
+        }
+        struct input_absinfo info {};
+        if (ioctl(device.fd, EVIOCGABS(axis), &info)) {
+            ALOGE("Error reading absolute controller %d for device %s fd %d, errno=%d", axis,
+                  device.identifier.name.c_str(), device.fd, errno);
+            continue;
+        }
+        if (info.minimum == info.maximum) {
+            continue;
+        }
+        RawAbsoluteAxisInfo& outAxisInfo = device.rawAbsoluteAxisInfoCache[axis];
+        outAxisInfo.valid = true;
+        outAxisInfo.minValue = info.minimum;
+        outAxisInfo.maxValue = info.maximum;
+        outAxisInfo.flat = info.flat;
+        outAxisInfo.fuzz = info.fuzz;
+        outAxisInfo.resolution = info.resolution;
+    }
+}
+
 InputDeviceIdentifier EventHub::getDeviceIdentifier(int32_t deviceId) const {
     std::scoped_lock _l(mLock);
     Device* device = getDeviceLocked(deviceId);
@@ -900,31 +918,20 @@
 status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis,
                                        RawAbsoluteAxisInfo* outAxisInfo) const {
     outAxisInfo->clear();
-
-    if (axis >= 0 && axis <= ABS_MAX) {
-        std::scoped_lock _l(mLock);
-
-        Device* device = getDeviceLocked(deviceId);
-        if (device != nullptr && device->hasValidFd() && device->absBitmask.test(axis)) {
-            struct input_absinfo info;
-            if (ioctl(device->fd, EVIOCGABS(axis), &info)) {
-                ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d", axis,
-                      device->identifier.name.c_str(), device->fd, errno);
-                return -errno;
-            }
-
-            if (info.minimum != info.maximum) {
-                outAxisInfo->valid = true;
-                outAxisInfo->minValue = info.minimum;
-                outAxisInfo->maxValue = info.maximum;
-                outAxisInfo->flat = info.flat;
-                outAxisInfo->fuzz = info.fuzz;
-                outAxisInfo->resolution = info.resolution;
-            }
-            return OK;
-        }
+    if (axis < 0 || axis > ABS_MAX) {
+        return -1;
     }
-    return -1;
+    std::scoped_lock _l(mLock);
+    Device* device = getDeviceLocked(deviceId);
+    if (device == nullptr) {
+        return -1;
+    }
+    auto it = device->rawAbsoluteAxisInfoCache.find(axis);
+    if (it == device->rawAbsoluteAxisInfoCache.end()) {
+        return -1;
+    }
+    *outAxisInfo = it->second;
+    return OK;
 }
 
 bool EventHub::hasRelativeAxis(int32_t deviceId, int axis) const {
@@ -2060,15 +2067,6 @@
 
 // ----------------------------------------------------------------------------
 
-static const int32_t GAMEPAD_KEYCODES[] = {
-        AKEYCODE_BUTTON_A,      AKEYCODE_BUTTON_B,      AKEYCODE_BUTTON_C,    //
-        AKEYCODE_BUTTON_X,      AKEYCODE_BUTTON_Y,      AKEYCODE_BUTTON_Z,    //
-        AKEYCODE_BUTTON_L1,     AKEYCODE_BUTTON_R1,                           //
-        AKEYCODE_BUTTON_L2,     AKEYCODE_BUTTON_R2,                           //
-        AKEYCODE_BUTTON_THUMBL, AKEYCODE_BUTTON_THUMBR,                       //
-        AKEYCODE_BUTTON_START,  AKEYCODE_BUTTON_SELECT, AKEYCODE_BUTTON_MODE, //
-};
-
 status_t EventHub::registerFdForEpoll(int fd) {
     // TODO(b/121395353) - consider adding EPOLLRDHUP
     struct epoll_event eventItem = {};
@@ -2391,31 +2389,23 @@
             device->classes |= InputDeviceClass::ALPHAKEY;
         }
 
-        // See if this device has a DPAD.
-        if (device->hasKeycodeLocked(AKEYCODE_DPAD_UP) &&
-            device->hasKeycodeLocked(AKEYCODE_DPAD_DOWN) &&
-            device->hasKeycodeLocked(AKEYCODE_DPAD_LEFT) &&
-            device->hasKeycodeLocked(AKEYCODE_DPAD_RIGHT) &&
-            device->hasKeycodeLocked(AKEYCODE_DPAD_CENTER)) {
+        // See if this device has a D-pad.
+        if (std::all_of(DPAD_REQUIRED_KEYCODES.begin(), DPAD_REQUIRED_KEYCODES.end(),
+                        [&](int32_t keycode) { return device->hasKeycodeLocked(keycode); })) {
             device->classes |= InputDeviceClass::DPAD;
         }
 
         // See if this device has a gamepad.
-        for (size_t i = 0; i < sizeof(GAMEPAD_KEYCODES) / sizeof(GAMEPAD_KEYCODES[0]); i++) {
-            if (device->hasKeycodeLocked(GAMEPAD_KEYCODES[i])) {
-                device->classes |= InputDeviceClass::GAMEPAD;
-                break;
-            }
+        if (std::any_of(GAMEPAD_KEYCODES.begin(), GAMEPAD_KEYCODES.end(),
+                        [&](int32_t keycode) { return device->hasKeycodeLocked(keycode); })) {
+            device->classes |= InputDeviceClass::GAMEPAD;
         }
 
         // See if this device has any stylus buttons that we would want to fuse with touch data.
-        if (!device->classes.any(InputDeviceClass::TOUCH | InputDeviceClass::TOUCH_MT)) {
-            for (int32_t keycode : STYLUS_BUTTON_KEYCODES) {
-                if (device->hasKeycodeLocked(keycode)) {
-                    device->classes |= InputDeviceClass::EXTERNAL_STYLUS;
-                    break;
-                }
-            }
+        if (!device->classes.any(InputDeviceClass::TOUCH | InputDeviceClass::TOUCH_MT) &&
+            std::any_of(STYLUS_BUTTON_KEYCODES.begin(), STYLUS_BUTTON_KEYCODES.end(),
+                        [&](int32_t keycode) { return device->hasKeycodeLocked(keycode); })) {
+            device->classes |= InputDeviceClass::EXTERNAL_STYLUS;
         }
     }
 
@@ -2458,6 +2448,9 @@
 
     device->configureFd();
 
+    // read absolute axis info for all available axes for the device
+    populateDeviceAbsoluteAxisInfo(*device);
+
     ALOGI("New device: id=%d, fd=%d, path='%s', name='%s', classes=%s, "
           "configuration='%s', keyLayout='%s', keyCharacterMap='%s', builtinKeyboard=%s, ",
           deviceId, fd, devicePath.c_str(), device->identifier.name.c_str(),
diff --git a/services/inputflinger/reader/controller/PeripheralController.cpp b/services/inputflinger/reader/controller/PeripheralController.cpp
index a380b5e..eabf591 100644
--- a/services/inputflinger/reader/controller/PeripheralController.cpp
+++ b/services/inputflinger/reader/controller/PeripheralController.cpp
@@ -16,8 +16,10 @@
 
 #include <locale>
 #include <regex>
-#include <set>
+#include <sstream>
+#include <string>
 
+#include <android/sysprop/InputProperties.sysprop.h>
 #include <ftl/enum.h>
 
 #include "../Macros.h"
@@ -45,6 +47,10 @@
     return (brightness & 0xff) << 24 | (red & 0xff) << 16 | (green & 0xff) << 8 | (blue & 0xff);
 }
 
+static inline bool isKeyboardBacklightCustomLevelsEnabled() {
+    return sysprop::InputProperties::enable_keyboard_backlight_custom_levels().value_or(true);
+}
+
 /**
  * Input controller owned by InputReader device, implements the native API for querying input
  * lights, getting and setting the lights brightness and color, by interacting with EventHub
@@ -272,11 +278,43 @@
     for (const auto& [lightId, light] : mLights) {
         // Input device light doesn't support ordinal, always pass 1.
         InputDeviceLightInfo lightInfo(light->name, light->id, light->type, light->capabilityFlags,
-                                       /*ordinal=*/1);
+                                       /*ordinal=*/1, getPreferredBrightnessLevels(light.get()));
         deviceInfo->addLightInfo(lightInfo);
     }
 }
 
+// TODO(b/281822656): Move to constructor and add as a parameter to avoid parsing repeatedly.
+// Need to change lifecycle of Peripheral controller so that Input device configuration map is
+// available at construction time before moving this logic to constructor.
+std::set<BrightnessLevel> PeripheralController::getPreferredBrightnessLevels(
+        const Light* light) const {
+    std::set<BrightnessLevel> levels;
+    if (!isKeyboardBacklightCustomLevelsEnabled() ||
+        light->type != InputDeviceLightType::KEYBOARD_BACKLIGHT) {
+        return levels;
+    }
+    std::optional<std::string> keyboardBacklightLevels =
+            mDeviceContext.getConfiguration().getString("keyboard.backlight.brightnessLevels");
+    if (!keyboardBacklightLevels) {
+        return levels;
+    }
+    std::stringstream ss(*keyboardBacklightLevels);
+    while (ss.good()) {
+        std::string substr;
+        std::getline(ss, substr, ',');
+        char* end;
+        int32_t value = static_cast<int32_t>(strtol(substr.c_str(), &end, 10));
+        if (*end != '\0' || value < 0 || value > 255) {
+            ALOGE("Error parsing keyboard backlight brightness levels, provided levels = %s",
+                  keyboardBacklightLevels->c_str());
+            levels.clear();
+            break;
+        }
+        levels.insert(BrightnessLevel(value));
+    }
+    return levels;
+}
+
 void PeripheralController::dump(std::string& dump) {
     dump += INDENT2 "Input Controller:\n";
     if (!mLights.empty()) {
@@ -550,5 +588,4 @@
 int32_t PeripheralController::getEventHubId() const {
     return getDeviceContext().getEventHubId();
 }
-
 } // namespace android
diff --git a/services/inputflinger/reader/controller/PeripheralController.h b/services/inputflinger/reader/controller/PeripheralController.h
index 8ac42c3..07ade7c 100644
--- a/services/inputflinger/reader/controller/PeripheralController.h
+++ b/services/inputflinger/reader/controller/PeripheralController.h
@@ -76,6 +76,7 @@
 
         virtual void dump(std::string& dump) {}
 
+        void configureSuggestedBrightnessLevels();
         std::optional<std::int32_t> getRawLightBrightness(int32_t rawLightId);
         void setRawLightBrightness(int32_t rawLightId, int32_t brightness);
     };
@@ -152,6 +153,8 @@
 
     // Battery map from battery ID to battery
     std::unordered_map<int32_t, std::unique_ptr<Battery>> mBatteries;
+
+    std::set<BrightnessLevel> getPreferredBrightnessLevels(const Light* light) const;
 };
 
 } // namespace android
diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index 20612c7..024187f 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -615,6 +615,7 @@
         std::unique_ptr<PropertyMap> configuration;
         std::unique_ptr<VirtualKeyMap> virtualKeyMap;
         KeyMap keyMap;
+        std::unordered_map<int /*axis*/, RawAbsoluteAxisInfo> rawAbsoluteAxisInfoCache;
 
         bool ffEffectPlaying;
         int16_t ffEffectId; // initially -1
@@ -717,6 +718,13 @@
     void addDeviceInputInotify();
     void addDeviceInotify();
 
+    /**
+     * AbsoluteAxisInfo remains unchanged for the lifetime of the device, hence
+     * we can read and store it with device
+     * @param device target device
+     */
+    static void populateDeviceAbsoluteAxisInfo(Device& device);
+
     // Protect all internal state.
     mutable std::mutex mLock;
 
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 0b8a608..2f8e5bd 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -74,7 +74,7 @@
     }
     inline bool hasMic() const { return mHasMic; }
 
-    inline bool isIgnored() { return !getMapperCount(); }
+    inline bool isIgnored() { return !getMapperCount() && !mController; }
 
     bool isEnabled();
     [[nodiscard]] std::list<NotifyArgs> setEnabled(bool enabled, nsecs_t when);
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
index c72425a..ca4dd1e 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
@@ -16,8 +16,11 @@
 
 #include "../Macros.h"
 
+#include <algorithm>
 #include <chrono>
+#include <iterator>
 #include <limits>
+#include <map>
 #include <optional>
 
 #include <android-base/stringprintf.h>
@@ -26,6 +29,8 @@
 #include <input/PrintTools.h>
 #include <linux/input-event-codes.h>
 #include <log/log_main.h>
+#include <stats_pull_atom_callback.h>
+#include <statslog.h>
 #include "TouchCursorInputMapperCommon.h"
 #include "TouchpadInputMapper.h"
 #include "ui/Rotation.h"
@@ -169,6 +174,106 @@
     mapper->consumeGesture(gesture);
 }
 
+int32_t linuxBusToInputDeviceBusEnum(int32_t linuxBus) {
+    // When adding cases to this switch, also add them to the copy of this method in
+    // InputDeviceMetricsCollector.cpp.
+    // TODO(b/286394420): deduplicate this method with the one in InputDeviceMetricsCollector.cpp.
+    switch (linuxBus) {
+        case BUS_USB:
+            return util::INPUT_DEVICE_USAGE_REPORTED__DEVICE_BUS__USB;
+        case BUS_BLUETOOTH:
+            return util::INPUT_DEVICE_USAGE_REPORTED__DEVICE_BUS__BLUETOOTH;
+        default:
+            return util::INPUT_DEVICE_USAGE_REPORTED__DEVICE_BUS__OTHER;
+    }
+}
+
+class MetricsAccumulator {
+public:
+    static MetricsAccumulator& getInstance() {
+        static MetricsAccumulator sAccumulator;
+        return sAccumulator;
+    }
+
+    void recordFinger(const TouchpadInputMapper::MetricsIdentifier& id) { mCounters[id].fingers++; }
+
+    void recordPalm(const TouchpadInputMapper::MetricsIdentifier& id) { mCounters[id].palms++; }
+
+    // Checks whether a Gesture struct is for the end of a gesture that we log metrics for, and
+    // records it if so.
+    void processGesture(const TouchpadInputMapper::MetricsIdentifier& id, const Gesture& gesture) {
+        switch (gesture.type) {
+            case kGestureTypeFling:
+                if (gesture.details.fling.fling_state == GESTURES_FLING_START) {
+                    // Indicates the end of a two-finger scroll gesture.
+                    mCounters[id].twoFingerSwipeGestures++;
+                }
+                break;
+            case kGestureTypeSwipeLift:
+                mCounters[id].threeFingerSwipeGestures++;
+                break;
+            case kGestureTypeFourFingerSwipeLift:
+                mCounters[id].fourFingerSwipeGestures++;
+                break;
+            case kGestureTypePinch:
+                if (gesture.details.pinch.zoom_state == GESTURES_ZOOM_END) {
+                    mCounters[id].pinchGestures++;
+                }
+                break;
+            default:
+                // We're not interested in any other gestures.
+                break;
+        }
+    }
+
+private:
+    MetricsAccumulator() {
+        AStatsManager_setPullAtomCallback(android::util::TOUCHPAD_USAGE, /*metadata=*/nullptr,
+                                          MetricsAccumulator::pullAtomCallback, /*cookie=*/nullptr);
+    }
+
+    ~MetricsAccumulator() { AStatsManager_clearPullAtomCallback(android::util::TOUCHPAD_USAGE); }
+
+    static AStatsManager_PullAtomCallbackReturn pullAtomCallback(int32_t atomTag,
+                                                                 AStatsEventList* outEventList,
+                                                                 void* cookie) {
+        LOG_ALWAYS_FATAL_IF(atomTag != android::util::TOUCHPAD_USAGE);
+        MetricsAccumulator& accumulator = MetricsAccumulator::getInstance();
+        accumulator.produceAtoms(outEventList);
+        accumulator.resetCounters();
+        return AStatsManager_PULL_SUCCESS;
+    }
+
+    void produceAtoms(AStatsEventList* outEventList) const {
+        for (auto& [id, counters] : mCounters) {
+            auto [busId, vendorId, productId, versionId] = id;
+            addAStatsEvent(outEventList, android::util::TOUCHPAD_USAGE, vendorId, productId,
+                           versionId, linuxBusToInputDeviceBusEnum(busId), counters.fingers,
+                           counters.palms, counters.twoFingerSwipeGestures,
+                           counters.threeFingerSwipeGestures, counters.fourFingerSwipeGestures,
+                           counters.pinchGestures);
+        }
+    }
+
+    void resetCounters() { mCounters.clear(); }
+
+    // Stores the counters for a specific touchpad model. Fields have the same meanings as those of
+    // the TouchpadUsage atom; see that definition for detailed documentation.
+    struct Counters {
+        int32_t fingers = 0;
+        int32_t palms = 0;
+
+        int32_t twoFingerSwipeGestures = 0;
+        int32_t threeFingerSwipeGestures = 0;
+        int32_t fourFingerSwipeGestures = 0;
+        int32_t pinchGestures = 0;
+    };
+
+    // Metrics are aggregated by device model and version, so if two devices of the same model and
+    // version are connected at once, they will have the same counters.
+    std::map<TouchpadInputMapper::MetricsIdentifier, Counters> mCounters;
+};
+
 } // namespace
 
 TouchpadInputMapper::TouchpadInputMapper(InputDeviceContext& deviceContext,
@@ -178,7 +283,8 @@
         mPointerController(getContext()->getPointerController(getDeviceId())),
         mStateConverter(deviceContext, mMotionAccumulator),
         mGestureConverter(*getContext(), deviceContext, getDeviceId()),
-        mCapturedEventConverter(*getContext(), deviceContext, mMotionAccumulator, getDeviceId()) {
+        mCapturedEventConverter(*getContext(), deviceContext, mMotionAccumulator, getDeviceId()),
+        mMetricsId(metricsIdFromInputDeviceIdentifier(deviceContext.getDeviceIdentifier())) {
     RawAbsoluteAxisInfo slotAxisInfo;
     deviceContext.getAbsoluteAxisInfo(ABS_MT_SLOT, &slotAxisInfo);
     if (!slotAxisInfo.valid || slotAxisInfo.maxValue <= 0) {
@@ -331,12 +437,39 @@
     }
     std::optional<SelfContainedHardwareState> state = mStateConverter.processRawEvent(rawEvent);
     if (state) {
+        updatePalmDetectionMetrics();
         return sendHardwareState(rawEvent->when, rawEvent->readTime, *state);
     } else {
         return {};
     }
 }
 
+void TouchpadInputMapper::updatePalmDetectionMetrics() {
+    std::set<int32_t> currentTrackingIds;
+    for (size_t i = 0; i < mMotionAccumulator.getSlotCount(); i++) {
+        const MultiTouchMotionAccumulator::Slot& slot = mMotionAccumulator.getSlot(i);
+        if (!slot.isInUse()) {
+            continue;
+        }
+        currentTrackingIds.insert(slot.getTrackingId());
+        if (slot.getToolType() == ToolType::PALM) {
+            mPalmTrackingIds.insert(slot.getTrackingId());
+        }
+    }
+    std::vector<int32_t> liftedTouches;
+    std::set_difference(mLastFrameTrackingIds.begin(), mLastFrameTrackingIds.end(),
+                        currentTrackingIds.begin(), currentTrackingIds.end(),
+                        std::inserter(liftedTouches, liftedTouches.begin()));
+    for (int32_t trackingId : liftedTouches) {
+        if (mPalmTrackingIds.erase(trackingId) > 0) {
+            MetricsAccumulator::getInstance().recordPalm(mMetricsId);
+        } else {
+            MetricsAccumulator::getInstance().recordFinger(mMetricsId);
+        }
+    }
+    mLastFrameTrackingIds = currentTrackingIds;
+}
+
 std::list<NotifyArgs> TouchpadInputMapper::sendHardwareState(nsecs_t when, nsecs_t readTime,
                                                              SelfContainedHardwareState schs) {
     ALOGD_IF(DEBUG_TOUCHPAD_GESTURES, "New hardware state: %s", schs.state.String().c_str());
@@ -363,8 +496,10 @@
 
 std::list<NotifyArgs> TouchpadInputMapper::processGestures(nsecs_t when, nsecs_t readTime) {
     std::list<NotifyArgs> out = {};
+    MetricsAccumulator& metricsAccumulator = MetricsAccumulator::getInstance();
     for (Gesture& gesture : mGesturesToProcess) {
         out += mGestureConverter.handleGesture(when, readTime, gesture);
+        metricsAccumulator.processGesture(mMetricsId, gesture);
     }
     mGesturesToProcess.clear();
     return out;
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.h b/services/inputflinger/reader/mapper/TouchpadInputMapper.h
index 23d0fd3..73ca5af 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.h
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.h
@@ -18,6 +18,7 @@
 
 #include <list>
 #include <memory>
+#include <set>
 #include <vector>
 
 #include <PointerControllerInterface.h>
@@ -58,10 +59,16 @@
 
     void consumeGesture(const Gesture* gesture);
 
+    // A subset of InputDeviceIdentifier used for logging metrics, to avoid storing a copy of the
+    // strings in that bigger struct.
+    using MetricsIdentifier = std::tuple<uint16_t /*busId*/, uint16_t /*vendorId*/,
+                                         uint16_t /*productId*/, uint16_t /*version*/>;
+
 private:
     void resetGestureInterpreter(nsecs_t when);
     explicit TouchpadInputMapper(InputDeviceContext& deviceContext,
                                  const InputReaderConfiguration& readerConfig);
+    void updatePalmDetectionMetrics();
     [[nodiscard]] std::list<NotifyArgs> sendHardwareState(nsecs_t when, nsecs_t readTime,
                                                           SelfContainedHardwareState schs);
     [[nodiscard]] std::list<NotifyArgs> processGestures(nsecs_t when, nsecs_t readTime);
@@ -86,6 +93,15 @@
     bool mProcessing = false;
     bool mResettingInterpreter = false;
     std::vector<Gesture> mGesturesToProcess;
+
+    static MetricsIdentifier metricsIdFromInputDeviceIdentifier(const InputDeviceIdentifier& id) {
+        return std::make_tuple(id.bus, id.vendor, id.product, id.version);
+    }
+    const MetricsIdentifier mMetricsId;
+    // Tracking IDs for touches on the pad in the last evdev frame.
+    std::set<int32_t> mLastFrameTrackingIds;
+    // Tracking IDs for touches that have at some point been reported as palms by the touchpad.
+    std::set<int32_t> mPalmTrackingIds;
 };
 
 } // namespace android
diff --git a/services/inputflinger/reader/mapper/gestures/GestureConverter.cpp b/services/inputflinger/reader/mapper/gestures/GestureConverter.cpp
index 7eca6fa..1088821 100644
--- a/services/inputflinger/reader/mapper/gestures/GestureConverter.cpp
+++ b/services/inputflinger/reader/mapper/gestures/GestureConverter.cpp
@@ -385,6 +385,8 @@
         }
 
         mDownTime = when;
+        mFakeFingerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_GESTURE_SWIPE_FINGER_COUNT,
+                                          fingerCount);
         out.push_back(makeMotionArgs(when, readTime, AMOTION_EVENT_ACTION_DOWN,
                                      /* actionButton= */ 0, mButtonState, /* pointerCount= */ 1,
                                      mFingerProps.data(), mFakeFingerCoords.data(), xCursorPosition,
@@ -441,6 +443,7 @@
                                  /* actionButton= */ 0, mButtonState, /* pointerCount= */ 1,
                                  mFingerProps.data(), mFakeFingerCoords.data(), xCursorPosition,
                                  yCursorPosition));
+    mFakeFingerCoords[0].setAxisValue(AMOTION_EVENT_AXIS_GESTURE_SWIPE_FINGER_COUNT, 0);
     mCurrentClassification = MotionClassification::NONE;
     mSwipeFingerCount = 0;
     return out;
diff --git a/services/inputflinger/reporter/Android.bp b/services/inputflinger/reporter/Android.bp
index 693ff06..b1e1aee 100644
--- a/services/inputflinger/reporter/Android.bp
+++ b/services/inputflinger/reporter/Android.bp
@@ -37,6 +37,7 @@
 cc_defaults {
     name: "libinputreporter_defaults",
     srcs: [":libinputreporter_sources"],
+    host_supported: true,
     shared_libs: [
         "liblog",
         "libutils",
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index 569690a..300bb85 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -48,6 +48,7 @@
         "FocusResolver_test.cpp",
         "GestureConverter_test.cpp",
         "HardwareStateConverter_test.cpp",
+        "InputDeviceMetricsCollector_test.cpp",
         "InputMapperTest.cpp",
         "InputProcessor_test.cpp",
         "InputProcessorConverter_test.cpp",
@@ -58,6 +59,7 @@
         "NotifyArgs_test.cpp",
         "PreferStylusOverTouch_test.cpp",
         "PropertyProvider_test.cpp",
+        "SyncQueue_test.cpp",
         "TestInputListener.cpp",
         "TouchpadInputMapper_test.cpp",
         "UinputDevice.cpp",
@@ -77,6 +79,9 @@
             ],
         },
         host: {
+            sanitize: {
+                address: true,
+            },
             include_dirs: [
                 "bionic/libc/kernel/android/uapi/",
                 "bionic/libc/kernel/uapi",
@@ -90,6 +95,7 @@
         },
     },
     sanitize: {
+        hwaddress: true,
         undefined: true,
         all_undefined: true,
         diag: {
diff --git a/services/inputflinger/tests/BlockingQueue_test.cpp b/services/inputflinger/tests/BlockingQueue_test.cpp
index fd9d9d5..754a5c4 100644
--- a/services/inputflinger/tests/BlockingQueue_test.cpp
+++ b/services/inputflinger/tests/BlockingQueue_test.cpp
@@ -22,6 +22,7 @@
 
 namespace android {
 
+using std::chrono_literals::operator""ns;
 
 // --- BlockingQueueTest ---
 
@@ -34,6 +35,14 @@
 
     ASSERT_TRUE(queue.push(1));
     ASSERT_EQ(queue.pop(), 1);
+
+    ASSERT_TRUE(queue.emplace(2));
+    ASSERT_EQ(queue.popWithTimeout(0ns), 2);
+
+    ASSERT_TRUE(queue.push(3));
+    ASSERT_EQ(queue.popWithTimeout(100ns), 3);
+
+    ASSERT_EQ(std::nullopt, queue.popWithTimeout(0ns));
 }
 
 /**
@@ -87,7 +96,7 @@
     queue.push(3);
     queue.push(4);
     // Erase elements 2 and 4
-    queue.erase([](int element) { return element == 2 || element == 4; });
+    queue.erase_if([](int element) { return element == 2 || element == 4; });
     // Should no longer receive elements 2 and 4
     ASSERT_EQ(1, queue.pop());
     ASSERT_EQ(3, queue.pop());
@@ -138,5 +147,9 @@
     ASSERT_TRUE(hasReceivedElement);
 }
 
+TEST(BlockingQueueTest, Queue_TimesOut) {
+    BlockingQueue<int> queue;
+    ASSERT_EQ(std::nullopt, queue.popWithTimeout(1ns));
+}
 
 } // namespace android
diff --git a/services/inputflinger/tests/FocusResolver_test.cpp b/services/inputflinger/tests/FocusResolver_test.cpp
index 5440a98..2ff9c3c 100644
--- a/services/inputflinger/tests/FocusResolver_test.cpp
+++ b/services/inputflinger/tests/FocusResolver_test.cpp
@@ -31,6 +31,8 @@
 
 namespace android::inputdispatcher {
 
+namespace {
+
 class FakeWindowHandle : public WindowInfoHandle {
 public:
     FakeWindowHandle(const std::string& name, const sp<IBinder>& token, bool focusable,
@@ -49,6 +51,8 @@
     }
 };
 
+} // namespace
+
 TEST(FocusResolverTest, SetFocusedWindow) {
     sp<IBinder> focusableWindowToken = sp<BBinder>::make();
     sp<IBinder> invisibleWindowToken = sp<BBinder>::make();
diff --git a/services/inputflinger/tests/GestureConverter_test.cpp b/services/inputflinger/tests/GestureConverter_test.cpp
index a723636..a3994f0 100644
--- a/services/inputflinger/tests/GestureConverter_test.cpp
+++ b/services/inputflinger/tests/GestureConverter_test.cpp
@@ -332,7 +332,7 @@
                       WithToolType(ToolType::FINGER)));
 }
 
-TEST_F(GestureConverterTest, Scroll_ClearsClassificationAndOffsetsAfterGesture) {
+TEST_F(GestureConverterTest, Scroll_ClearsClassificationAfterGesture) {
     InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
     GestureConverter converter(*mReader->getContext(), deviceContext, DEVICE_ID);
 
@@ -349,29 +349,71 @@
     Gesture moveGesture(kGestureMove, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, -5, 10);
     args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, moveGesture);
     ASSERT_EQ(1u, args.size());
-    ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
-                AllOf(WithMotionClassification(MotionClassification::NONE),
-                      WithGestureScrollDistance(0, 0, EPSILON)));
+    EXPECT_THAT(std::get<NotifyMotionArgs>(args.front()),
+                WithMotionClassification(MotionClassification::NONE));
 }
 
-TEST_F(GestureConverterTest, ThreeFingerSwipe_ClearsClassificationAndOffsetsAfterGesture) {
+TEST_F(GestureConverterTest, Scroll_ClearsScrollDistanceAfterGesture) {
     InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
     GestureConverter converter(*mReader->getContext(), deviceContext, DEVICE_ID);
 
-    Gesture startGesture(kGestureSwipe, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /* dx= */ 0,
-                         /* dy= */ 0);
+    Gesture startGesture(kGestureScroll, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, 0, -10);
+    std::list<NotifyArgs> args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, startGesture);
+
+    Gesture continueGesture(kGestureScroll, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, 0, -5);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, continueGesture);
+
+    Gesture flingGesture(kGestureFling, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, 1, 1,
+                         GESTURES_FLING_START);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, flingGesture);
+
+    // Move gestures don't use the fake finger array, so to test that gesture axes are cleared we
+    // need to use another gesture type, like pinch.
+    Gesture pinchGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dz=*/1,
+                         GESTURES_ZOOM_START);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, pinchGesture);
+    ASSERT_FALSE(args.empty());
+    EXPECT_THAT(std::get<NotifyMotionArgs>(args.front()), WithGestureScrollDistance(0, 0, EPSILON));
+}
+
+TEST_F(GestureConverterTest, ThreeFingerSwipe_ClearsClassificationAfterGesture) {
+    InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+    GestureConverter converter(*mReader->getContext(), deviceContext, DEVICE_ID);
+
+    Gesture startGesture(kGestureSwipe, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dx=*/0,
+                         /*dy=*/0);
     std::list<NotifyArgs> args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, startGesture);
 
     Gesture liftGesture(kGestureSwipeLift, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME);
     args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, liftGesture);
 
-    Gesture moveGesture(kGestureMove, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /* dx= */ -5,
-                        /* dy= */ 10);
+    Gesture moveGesture(kGestureMove, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dx=*/-5,
+                        /*dy=*/10);
     args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, moveGesture);
     ASSERT_EQ(1u, args.size());
-    ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
-                AllOf(WithMotionClassification(MotionClassification::NONE),
-                      WithGestureOffset(0, 0, EPSILON)));
+    EXPECT_THAT(std::get<NotifyMotionArgs>(args.front()),
+                WithMotionClassification(MotionClassification::NONE));
+}
+
+TEST_F(GestureConverterTest, ThreeFingerSwipe_ClearsGestureAxesAfterGesture) {
+    InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+    GestureConverter converter(*mReader->getContext(), deviceContext, DEVICE_ID);
+
+    Gesture startGesture(kGestureSwipe, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dx=*/5,
+                         /*dy=*/5);
+    std::list<NotifyArgs> args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, startGesture);
+
+    Gesture liftGesture(kGestureSwipeLift, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, liftGesture);
+
+    // Move gestures don't use the fake finger array, so to test that gesture axes are cleared we
+    // need to use another gesture type, like pinch.
+    Gesture pinchGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dz=*/1,
+                         GESTURES_ZOOM_START);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, pinchGesture);
+    ASSERT_FALSE(args.empty());
+    EXPECT_THAT(std::get<NotifyMotionArgs>(args.front()),
+                AllOf(WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(0)));
 }
 
 TEST_F(GestureConverterTest, ThreeFingerSwipe_Vertical) {
@@ -392,6 +434,7 @@
     NotifyMotionArgs arg = std::get<NotifyMotionArgs>(args.front());
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_DOWN), WithGestureOffset(0, 0, EPSILON),
+                      WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(1u), WithToolType(ToolType::FINGER)));
     PointerCoords finger0Start = arg.pointerCoords[0];
@@ -400,7 +443,7 @@
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_DOWN |
                                        1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(2u), WithToolType(ToolType::FINGER)));
     PointerCoords finger1Start = arg.pointerCoords[1];
@@ -409,7 +452,7 @@
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_DOWN |
                                        2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(3u), WithToolType(ToolType::FINGER)));
     PointerCoords finger2Start = arg.pointerCoords[2];
@@ -418,7 +461,7 @@
     arg = std::get<NotifyMotionArgs>(args.front());
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_MOVE),
-                      WithGestureOffset(0, -0.01, EPSILON),
+                      WithGestureOffset(0, -0.01, EPSILON), WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(3u), WithToolType(ToolType::FINGER)));
     EXPECT_EQ(arg.pointerCoords[0].getX(), finger0Start.getX());
@@ -435,7 +478,7 @@
     arg = std::get<NotifyMotionArgs>(args.front());
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_MOVE),
-                      WithGestureOffset(0, -0.005, EPSILON),
+                      WithGestureOffset(0, -0.005, EPSILON), WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(3u), WithToolType(ToolType::FINGER)));
     EXPECT_EQ(arg.pointerCoords[0].getX(), finger0Start.getX());
@@ -451,19 +494,20 @@
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_UP |
                                        2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(3u), WithToolType(ToolType::FINGER)));
     args.pop_front();
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_UP |
                                        1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(2u), WithToolType(ToolType::FINGER)));
     args.pop_front();
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_UP), WithGestureOffset(0, 0, EPSILON),
+                      WithGestureSwipeFingerCount(3),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(1u), WithToolType(ToolType::FINGER)));
 }
@@ -559,6 +603,7 @@
     NotifyMotionArgs arg = std::get<NotifyMotionArgs>(args.front());
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_DOWN), WithGestureOffset(0, 0, EPSILON),
+                      WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(1u), WithToolType(ToolType::FINGER)));
     PointerCoords finger0Start = arg.pointerCoords[0];
@@ -567,7 +612,7 @@
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_DOWN |
                                        1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(2u), WithToolType(ToolType::FINGER)));
     PointerCoords finger1Start = arg.pointerCoords[1];
@@ -576,7 +621,7 @@
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_DOWN |
                                        2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(3u), WithToolType(ToolType::FINGER)));
     PointerCoords finger2Start = arg.pointerCoords[2];
@@ -585,7 +630,7 @@
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_DOWN |
                                        3 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(4u), WithToolType(ToolType::FINGER)));
     PointerCoords finger3Start = arg.pointerCoords[3];
@@ -594,7 +639,7 @@
     arg = std::get<NotifyMotionArgs>(args.front());
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_MOVE),
-                      WithGestureOffset(0.01, 0, EPSILON),
+                      WithGestureOffset(0.01, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(4u), WithToolType(ToolType::FINGER)));
     EXPECT_EQ(arg.pointerCoords[0].getX(), finger0Start.getX() + 10);
@@ -613,7 +658,7 @@
     arg = std::get<NotifyMotionArgs>(args.front());
     ASSERT_THAT(arg,
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_MOVE),
-                      WithGestureOffset(0.005, 0, EPSILON),
+                      WithGestureOffset(0.005, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(4u), WithToolType(ToolType::FINGER)));
     EXPECT_EQ(arg.pointerCoords[0].getX(), finger0Start.getX() + 15);
@@ -631,26 +676,27 @@
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_UP |
                                        3 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(4u), WithToolType(ToolType::FINGER)));
     args.pop_front();
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_UP |
                                        2 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(3u), WithToolType(ToolType::FINGER)));
     args.pop_front();
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_POINTER_UP |
                                        1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT),
-                      WithGestureOffset(0, 0, EPSILON),
+                      WithGestureOffset(0, 0, EPSILON), WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(2u), WithToolType(ToolType::FINGER)));
     args.pop_front();
     ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
                 AllOf(WithMotionAction(AMOTION_EVENT_ACTION_UP), WithGestureOffset(0, 0, EPSILON),
+                      WithGestureSwipeFingerCount(4),
                       WithMotionClassification(MotionClassification::MULTI_FINGER_SWIPE),
                       WithPointerCount(1u), WithToolType(ToolType::FINGER)));
 }
@@ -761,28 +807,52 @@
                       WithToolType(ToolType::FINGER)));
 }
 
-TEST_F(GestureConverterTest, Pinch_ClearsClassificationAndScaleFactorAfterGesture) {
+TEST_F(GestureConverterTest, Pinch_ClearsClassificationAfterGesture) {
     InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
     GestureConverter converter(*mReader->getContext(), deviceContext, DEVICE_ID);
 
-    Gesture startGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /* dz= */ 1,
+    Gesture startGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dz=*/1,
                          GESTURES_ZOOM_START);
     std::list<NotifyArgs> args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, startGesture);
 
     Gesture updateGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME,
-                          /* dz= */ 1.2, GESTURES_ZOOM_UPDATE);
+                          /*dz=*/1.2, GESTURES_ZOOM_UPDATE);
     args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, updateGesture);
 
-    Gesture endGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /* dz= */ 1,
+    Gesture endGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dz=*/1,
                        GESTURES_ZOOM_END);
     args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, endGesture);
 
     Gesture moveGesture(kGestureMove, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, -5, 10);
     args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, moveGesture);
     ASSERT_EQ(1u, args.size());
-    ASSERT_THAT(std::get<NotifyMotionArgs>(args.front()),
-                AllOf(WithMotionClassification(MotionClassification::NONE),
-                      WithGesturePinchScaleFactor(0, EPSILON)));
+    EXPECT_THAT(std::get<NotifyMotionArgs>(args.front()),
+                WithMotionClassification(MotionClassification::NONE));
+}
+
+TEST_F(GestureConverterTest, Pinch_ClearsScaleFactorAfterGesture) {
+    InputDeviceContext deviceContext(*mDevice, EVENTHUB_ID);
+    GestureConverter converter(*mReader->getContext(), deviceContext, DEVICE_ID);
+
+    Gesture startGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dz=*/1,
+                         GESTURES_ZOOM_START);
+    std::list<NotifyArgs> args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, startGesture);
+
+    Gesture updateGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME,
+                          /*dz=*/1.2, GESTURES_ZOOM_UPDATE);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, updateGesture);
+
+    Gesture endGesture(kGesturePinch, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dz=*/1,
+                       GESTURES_ZOOM_END);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, endGesture);
+
+    // Move gestures don't use the fake finger array, so to test that gesture axes are cleared we
+    // need to use another gesture type, like scroll.
+    Gesture scrollGesture(kGestureScroll, ARBITRARY_GESTURE_TIME, ARBITRARY_GESTURE_TIME, /*dx=*/1,
+                          /*dy=*/0);
+    args = converter.handleGesture(ARBITRARY_TIME, READ_TIME, scrollGesture);
+    ASSERT_FALSE(args.empty());
+    EXPECT_THAT(std::get<NotifyMotionArgs>(args.front()), WithGesturePinchScaleFactor(0, EPSILON));
 }
 
 TEST_F(GestureConverterTest, ResetWithButtonPressed) {
diff --git a/services/inputflinger/tests/InputDeviceMetricsCollector_test.cpp b/services/inputflinger/tests/InputDeviceMetricsCollector_test.cpp
new file mode 100644
index 0000000..0aa5e23
--- /dev/null
+++ b/services/inputflinger/tests/InputDeviceMetricsCollector_test.cpp
@@ -0,0 +1,782 @@
+/*
+ * Copyright 2023 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 "../InputDeviceMetricsCollector.h"
+
+#include <gtest/gtest.h>
+#include <gui/constants.h>
+#include <input/EventBuilders.h>
+#include <linux/input.h>
+
+#include <array>
+#include <tuple>
+
+#include "TestInputListener.h"
+
+namespace android {
+
+using std::chrono_literals::operator""ns;
+using std::chrono::nanoseconds;
+
+namespace {
+
+constexpr auto USAGE_TIMEOUT = 8765309ns;
+constexpr auto TIME = 999999ns;
+constexpr auto ALL_USAGE_SOURCES = ftl::enum_range<InputDeviceUsageSource>();
+
+constexpr int32_t DEVICE_ID = 3;
+constexpr int32_t DEVICE_ID_2 = 4;
+constexpr int32_t VID = 0xFEED;
+constexpr int32_t PID = 0xDEAD;
+constexpr int32_t VERSION = 0xBEEF;
+const std::string DEVICE_NAME = "Half Dome";
+const std::string LOCATION = "California";
+const std::string UNIQUE_ID = "Yosemite";
+constexpr uint32_t TOUCHSCREEN = AINPUT_SOURCE_TOUCHSCREEN;
+constexpr uint32_t STYLUS = AINPUT_SOURCE_STYLUS;
+constexpr uint32_t KEY_SOURCES =
+        AINPUT_SOURCE_KEYBOARD | AINPUT_SOURCE_DPAD | AINPUT_SOURCE_GAMEPAD;
+constexpr int32_t POINTER_1_DOWN =
+        AMOTION_EVENT_ACTION_POINTER_DOWN | (1 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+
+InputDeviceIdentifier getIdentifier(int32_t id = DEVICE_ID) {
+    InputDeviceIdentifier identifier;
+    identifier.name = DEVICE_NAME + "_" + std::to_string(id);
+    identifier.location = LOCATION;
+    identifier.uniqueId = UNIQUE_ID;
+    identifier.vendor = VID;
+    identifier.product = PID;
+    identifier.version = VERSION;
+    identifier.bus = BUS_USB;
+    return identifier;
+}
+
+InputDeviceInfo generateTestDeviceInfo(int32_t id = DEVICE_ID,
+                                       uint32_t sources = TOUCHSCREEN | STYLUS,
+                                       bool isAlphabetic = false) {
+    auto info = InputDeviceInfo();
+    info.initialize(id, /*generation=*/1, /*controllerNumber=*/1, getIdentifier(id), "alias",
+                    /*isExternal=*/false, /*hasMic=*/false, ADISPLAY_ID_NONE);
+    info.addSource(sources);
+    info.setKeyboardType(isAlphabetic ? AINPUT_KEYBOARD_TYPE_ALPHABETIC
+                                      : AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC);
+    return info;
+}
+
+const InputDeviceInfo ALPHABETIC_KEYBOARD_INFO =
+        generateTestDeviceInfo(DEVICE_ID, KEY_SOURCES, /*isAlphabetic=*/true);
+const InputDeviceInfo NON_ALPHABETIC_KEYBOARD_INFO =
+        generateTestDeviceInfo(DEVICE_ID, KEY_SOURCES, /*isAlphabetic=*/false);
+
+std::set<gui::Uid> uids(std::initializer_list<int32_t> vals) {
+    std::set<gui::Uid> set;
+    for (const auto val : vals) {
+        set.emplace(val);
+    }
+    return set;
+}
+
+} // namespace
+
+// --- InputDeviceMetricsCollectorDeviceClassificationTest ---
+
+class DeviceClassificationFixture : public ::testing::Test,
+                                    public ::testing::WithParamInterface<InputDeviceUsageSource> {};
+
+TEST_P(DeviceClassificationFixture, ValidClassifications) {
+    const InputDeviceUsageSource usageSource = GetParam();
+
+    // Use a switch to ensure a test is added for all source classifications.
+    switch (usageSource) {
+        case InputDeviceUsageSource::UNKNOWN: {
+            ASSERT_EQ(InputDeviceUsageSource::UNKNOWN,
+                      getUsageSourceForKeyArgs(generateTestDeviceInfo(),
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, TOUCHSCREEN)
+                                                       .build()));
+
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::UNKNOWN};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_KEYBOARD)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::PALM)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::BUTTONS: {
+            ASSERT_EQ(InputDeviceUsageSource::BUTTONS,
+                      getUsageSourceForKeyArgs(NON_ALPHABETIC_KEYBOARD_INFO,
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, KEY_SOURCES)
+                                                       .keyCode(AKEYCODE_STYLUS_BUTTON_TAIL)
+                                                       .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::KEYBOARD: {
+            ASSERT_EQ(InputDeviceUsageSource::KEYBOARD,
+                      getUsageSourceForKeyArgs(ALPHABETIC_KEYBOARD_INFO,
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, KEY_SOURCES)
+                                                       .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::DPAD: {
+            ASSERT_EQ(InputDeviceUsageSource::DPAD,
+                      getUsageSourceForKeyArgs(NON_ALPHABETIC_KEYBOARD_INFO,
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, KEY_SOURCES)
+                                                       .keyCode(AKEYCODE_DPAD_CENTER)
+                                                       .build()));
+
+            ASSERT_EQ(InputDeviceUsageSource::DPAD,
+                      getUsageSourceForKeyArgs(ALPHABETIC_KEYBOARD_INFO,
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, KEY_SOURCES)
+                                                       .keyCode(AKEYCODE_DPAD_CENTER)
+                                                       .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::GAMEPAD: {
+            ASSERT_EQ(InputDeviceUsageSource::GAMEPAD,
+                      getUsageSourceForKeyArgs(NON_ALPHABETIC_KEYBOARD_INFO,
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, KEY_SOURCES)
+                                                       .keyCode(AKEYCODE_BUTTON_A)
+                                                       .build()));
+
+            ASSERT_EQ(InputDeviceUsageSource::GAMEPAD,
+                      getUsageSourceForKeyArgs(ALPHABETIC_KEYBOARD_INFO,
+                                               KeyArgsBuilder(AKEY_EVENT_ACTION_DOWN, KEY_SOURCES)
+                                                       .keyCode(AKEYCODE_BUTTON_A)
+                                                       .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::JOYSTICK: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::JOYSTICK};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_JOYSTICK)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::UNKNOWN)
+                                                       .axis(AMOTION_EVENT_AXIS_GAS, 1.f))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::MOUSE: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::MOUSE};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_MOVE,
+                                                AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::MOUSE)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::MOUSE_CAPTURED: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::MOUSE_CAPTURED};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE,
+                                                AINPUT_SOURCE_MOUSE_RELATIVE)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::MOUSE)
+                                                       .x(100)
+                                                       .y(200)
+                                                       .axis(AMOTION_EVENT_AXIS_RELATIVE_X, 100)
+                                                       .axis(AMOTION_EVENT_AXIS_RELATIVE_Y, 200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::TOUCHPAD: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::TOUCHPAD};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::FINGER)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::TOUCHPAD_CAPTURED: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::TOUCHPAD_CAPTURED};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE, AINPUT_SOURCE_TOUCHPAD)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::FINGER)
+                                                       .x(100)
+                                                       .y(200)
+                                                       .axis(AMOTION_EVENT_AXIS_RELATIVE_X, 1)
+                                                       .axis(AMOTION_EVENT_AXIS_RELATIVE_Y, 2))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::ROTARY_ENCODER: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::ROTARY_ENCODER};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_SCROLL,
+                                                AINPUT_SOURCE_ROTARY_ENCODER)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::UNKNOWN)
+                                                       .axis(AMOTION_EVENT_AXIS_SCROLL, 10)
+                                                       .axis(AMOTION_EVENT_AXIS_VSCROLL, 10))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::STYLUS_DIRECT: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::STYLUS_DIRECT};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_ENTER,
+                                                STYLUS | TOUCHSCREEN)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::STYLUS)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::STYLUS_INDIRECT: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::STYLUS_INDIRECT};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_ENTER,
+                                                STYLUS | TOUCHSCREEN | AINPUT_SOURCE_MOUSE)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::STYLUS)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::STYLUS_FUSED: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::STYLUS_FUSED};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_HOVER_ENTER,
+                                                AINPUT_SOURCE_BLUETOOTH_STYLUS | TOUCHSCREEN)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::STYLUS)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::TOUCH_NAVIGATION: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::TOUCH_NAVIGATION};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_MOVE,
+                                                AINPUT_SOURCE_TOUCH_NAVIGATION)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::FINGER)
+                                                       .x(100)
+                                                       .y(200))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::TOUCHSCREEN: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::TOUCHSCREEN};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(POINTER_1_DOWN, TOUCHSCREEN)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::FINGER)
+                                                       .x(100)
+                                                       .y(200))
+                                      .pointer(PointerBuilder(/*id=*/2, ToolType::FINGER)
+                                                       .x(300)
+                                                       .y(400))
+                                      .build()));
+            break;
+        }
+
+        case InputDeviceUsageSource::TRACKBALL: {
+            std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::TRACKBALL};
+            ASSERT_EQ(srcs,
+                      getUsageSourcesForMotionArgs(
+                              MotionArgsBuilder(AMOTION_EVENT_ACTION_SCROLL,
+                                                AINPUT_SOURCE_TRACKBALL)
+                                      .pointer(PointerBuilder(/*id=*/1, ToolType::UNKNOWN)
+                                                       .axis(AMOTION_EVENT_AXIS_VSCROLL, 100)
+                                                       .axis(AMOTION_EVENT_AXIS_HSCROLL, 200))
+                                      .build()));
+            break;
+        }
+    }
+}
+
+INSTANTIATE_TEST_SUITE_P(InputDeviceMetricsCollectorDeviceClassificationTest,
+                         DeviceClassificationFixture,
+                         ::testing::ValuesIn(ALL_USAGE_SOURCES.begin(), ALL_USAGE_SOURCES.end()),
+                         [](const testing::TestParamInfo<InputDeviceUsageSource>& testParamInfo) {
+                             return ftl::enum_string(testParamInfo.param);
+                         });
+
+TEST(InputDeviceMetricsCollectorDeviceClassificationTest, MixedClassificationTouchscreenStylus) {
+    std::set<InputDeviceUsageSource> srcs{InputDeviceUsageSource::TOUCHSCREEN,
+                                          InputDeviceUsageSource::STYLUS_DIRECT};
+    ASSERT_EQ(srcs,
+              getUsageSourcesForMotionArgs(
+                      MotionArgsBuilder(POINTER_1_DOWN, TOUCHSCREEN | STYLUS)
+                              .pointer(PointerBuilder(/*id=*/1, ToolType::FINGER).x(100).y(200))
+                              .pointer(PointerBuilder(/*id=*/2, ToolType::STYLUS).x(300).y(400))
+                              .build()));
+}
+
+// --- InputDeviceMetricsCollectorTest ---
+
+class InputDeviceMetricsCollectorTest : public testing::Test, public InputDeviceMetricsLogger {
+protected:
+    TestInputListener mTestListener;
+    InputDeviceMetricsCollector mMetricsCollector{mTestListener, *this, USAGE_TIMEOUT};
+
+    void assertUsageLogged(InputDeviceIdentifier identifier, nanoseconds duration,
+                           std::optional<SourceUsageBreakdown> sourceBreakdown = {},
+                           std::optional<UidUsageBreakdown> uidBreakdown = {}) {
+        ASSERT_GE(mLoggedUsageSessions.size(), 1u);
+        const auto& [loggedIdentifier, report] = *mLoggedUsageSessions.begin();
+        ASSERT_EQ(identifier, loggedIdentifier);
+        ASSERT_EQ(duration, report.usageDuration);
+        if (sourceBreakdown) {
+            ASSERT_EQ(sourceBreakdown, report.sourceBreakdown);
+        }
+        if (uidBreakdown) {
+            ASSERT_EQ(uidBreakdown, report.uidBreakdown);
+        }
+        mLoggedUsageSessions.erase(mLoggedUsageSessions.begin());
+    }
+
+    void assertUsageNotLogged() { ASSERT_TRUE(mLoggedUsageSessions.empty()); }
+
+    void setCurrentTime(nanoseconds time) { mCurrentTime = time; }
+
+    nsecs_t currentTime() const { return mCurrentTime.count(); }
+
+    NotifyMotionArgs generateMotionArgs(int32_t deviceId,
+                                        uint32_t source = AINPUT_SOURCE_TOUCHSCREEN,
+                                        std::vector<ToolType> toolTypes = {ToolType::FINGER}) {
+        MotionArgsBuilder builder(AMOTION_EVENT_ACTION_MOVE, source);
+        for (size_t i = 0; i < toolTypes.size(); i++) {
+            builder.pointer(PointerBuilder(i, toolTypes[i]));
+        }
+        return builder.deviceId(deviceId)
+                .eventTime(mCurrentTime.count())
+                .downTime(mCurrentTime.count())
+                .build();
+    }
+
+private:
+    std::vector<std::tuple<InputDeviceIdentifier, DeviceUsageReport>> mLoggedUsageSessions;
+    nanoseconds mCurrentTime{TIME};
+
+    nanoseconds getCurrentTime() override { return mCurrentTime; }
+
+    void logInputDeviceUsageReported(const InputDeviceIdentifier& identifier,
+                                     const DeviceUsageReport& report) override {
+        mLoggedUsageSessions.emplace_back(identifier, report);
+    }
+};
+
+TEST_F(InputDeviceMetricsCollectorTest, DontLogUsageWhenDeviceNotRegistered) {
+    // Device was used.
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mTestListener.assertNotifyMotionWasCalled();
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device was used again after the usage timeout expired, but we still don't log usage.
+    setCurrentTime(TIME + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mTestListener.assertNotifyMotionWasCalled();
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, DontLogUsageForIgnoredDevices) {
+    constexpr static std::array<int32_t, 2> ignoredDevices{
+            {INVALID_INPUT_DEVICE_ID, VIRTUAL_KEYBOARD_ID}};
+
+    for (int32_t ignoredDeviceId : ignoredDevices) {
+        mMetricsCollector.notifyInputDevicesChanged(
+                {/*id=*/0, {generateTestDeviceInfo(ignoredDeviceId)}});
+
+        // Device was used.
+        mMetricsCollector.notifyMotion(generateMotionArgs(ignoredDeviceId));
+        mTestListener.assertNotifyMotionWasCalled();
+        ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+        // Device was used again after the usage timeout expired, but we still don't log usage.
+        setCurrentTime(TIME + USAGE_TIMEOUT);
+        mMetricsCollector.notifyMotion(generateMotionArgs(ignoredDeviceId));
+        mTestListener.assertNotifyMotionWasCalled();
+        ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+        // Remove the ignored device, and ensure we still don't log usage.
+        mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {}});
+        ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+    }
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, LogsSingleEventUsageSession) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+
+    // Device was used.
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device was used again after the usage timeout.
+    setCurrentTime(TIME + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    // The usage session has zero duration because it consisted of only one event.
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(), 0ns));
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, LogsMultipleEventUsageSession) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+
+    // Device was used.
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device was used again after some time.
+    setCurrentTime(TIME + 21ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+
+    setCurrentTime(TIME + 42ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+
+    // Device was used again after the usage timeout.
+    setCurrentTime(TIME + 42ns + 2 * USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(), 42ns));
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, RemovingDeviceEndsUsageSession) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+
+    // Device was used.
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device was used again after some time.
+    setCurrentTime(TIME + 21ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+
+    // The device was removed before the usage timeout expired.
+    setCurrentTime(TIME + 42ns);
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {}});
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(), 21ns));
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, TracksUsageFromDifferentDevicesIndependently) {
+    mMetricsCollector.notifyInputDevicesChanged(
+            {/*id=*/0, {generateTestDeviceInfo(), generateTestDeviceInfo(DEVICE_ID_2)}});
+
+    // Device 1 was used.
+    setCurrentTime(TIME);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device 2 was used.
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2));
+    setCurrentTime(TIME + 400ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device 1 was used after its usage timeout expired. Its usage session is reported.
+    setCurrentTime(TIME + 300ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(DEVICE_ID), 100ns));
+
+    // Device 2 was used.
+    setCurrentTime(TIME + 350ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device 1 was used.
+    setCurrentTime(TIME + 500ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Device 2 is not used for a while, but Device 1 is used again.
+    setCurrentTime(TIME + 400ns + (2 * USAGE_TIMEOUT));
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    // Since Device 2's usage session ended, its usage should be reported.
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(DEVICE_ID_2), 150ns + USAGE_TIMEOUT));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, BreakdownUsageBySource) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+    InputDeviceMetricsLogger::SourceUsageBreakdown expectedSourceBreakdown;
+
+    // Use touchscreen.
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN));
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Use a stylus with the same input device.
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, STYLUS, {ToolType::STYLUS}));
+    setCurrentTime(TIME + 400ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, STYLUS, {ToolType::STYLUS}));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Touchscreen was used again after its usage timeout expired.
+    // This should be tracked as a separate usage of the source in the breakdown.
+    setCurrentTime(TIME + 300ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    expectedSourceBreakdown.emplace_back(InputDeviceUsageSource::TOUCHSCREEN, 100ns);
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Continue stylus and touchscreen usages.
+    setCurrentTime(TIME + 350ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, STYLUS, {ToolType::STYLUS}));
+    setCurrentTime(TIME + 450ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Touchscreen was used after the stylus's usage timeout expired.
+    // The stylus usage should be tracked in the source breakdown.
+    setCurrentTime(TIME + 400ns + USAGE_TIMEOUT + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN));
+    expectedSourceBreakdown.emplace_back(InputDeviceUsageSource::STYLUS_DIRECT,
+                                         150ns + USAGE_TIMEOUT);
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Remove all devices to force the usage session to be logged.
+    setCurrentTime(TIME + 500ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyInputDevicesChanged({});
+    expectedSourceBreakdown.emplace_back(InputDeviceUsageSource::TOUCHSCREEN,
+                                         100ns + USAGE_TIMEOUT);
+    // Verify that only one usage session was logged for the device, and that session was broken
+    // down by source correctly.
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(),
+                                              400ns + USAGE_TIMEOUT + USAGE_TIMEOUT,
+                                              expectedSourceBreakdown));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, BreakdownUsageBySource_TrackSourceByDevice) {
+    mMetricsCollector.notifyInputDevicesChanged(
+            {/*id=*/0, {generateTestDeviceInfo(DEVICE_ID), generateTestDeviceInfo(DEVICE_ID_2)}});
+    InputDeviceMetricsLogger::SourceUsageBreakdown expectedSourceBreakdown1;
+    InputDeviceMetricsLogger::SourceUsageBreakdown expectedSourceBreakdown2;
+
+    // Use both devices, with different sources.
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN));
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2, STYLUS, {ToolType::STYLUS}));
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN));
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2, STYLUS, {ToolType::STYLUS}));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Remove all devices to force the usage session to be logged.
+    mMetricsCollector.notifyInputDevicesChanged({});
+    expectedSourceBreakdown1.emplace_back(InputDeviceUsageSource::TOUCHSCREEN, 100ns);
+    expectedSourceBreakdown2.emplace_back(InputDeviceUsageSource::STYLUS_DIRECT, 100ns);
+    ASSERT_NO_FATAL_FAILURE(
+            assertUsageLogged(getIdentifier(DEVICE_ID), 100ns, expectedSourceBreakdown1));
+    ASSERT_NO_FATAL_FAILURE(
+            assertUsageLogged(getIdentifier(DEVICE_ID_2), 100ns, expectedSourceBreakdown2));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, BreakdownUsageBySource_MultiSourceEvent) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo(DEVICE_ID)}});
+    InputDeviceMetricsLogger::SourceUsageBreakdown expectedSourceBreakdown;
+
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN | STYLUS, //
+                                                      {ToolType::STYLUS}));
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN | STYLUS, //
+                                                      {ToolType::STYLUS, ToolType::FINGER}));
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN | STYLUS, //
+                                                      {ToolType::STYLUS, ToolType::FINGER}));
+    setCurrentTime(TIME + 300ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN | STYLUS, //
+                                                      {ToolType::FINGER}));
+    setCurrentTime(TIME + 400ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID, TOUCHSCREEN | STYLUS, //
+                                                      {ToolType::FINGER}));
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+
+    // Remove all devices to force the usage session to be logged.
+    mMetricsCollector.notifyInputDevicesChanged({});
+    expectedSourceBreakdown.emplace_back(InputDeviceUsageSource::STYLUS_DIRECT, 200ns);
+    expectedSourceBreakdown.emplace_back(InputDeviceUsageSource::TOUCHSCREEN, 300ns);
+    ASSERT_NO_FATAL_FAILURE(
+            assertUsageLogged(getIdentifier(DEVICE_ID), 400ns, expectedSourceBreakdown));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, UidsNotTrackedWhenThereIsNoActiveSession) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+
+    // Notify interaction with UIDs before the device is used.
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1}));
+
+    // Use the device.
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+
+    // Notify interaction for the wrong device.
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID_2, currentTime(), uids({42}));
+
+    // Notify interaction after usage session would have expired.
+    // This interaction should not be tracked.
+    setCurrentTime(TIME + 200ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({2, 3}));
+
+    // Use the device again, by starting a new usage session.
+    setCurrentTime(TIME + 300ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+
+    // The first usage session is logged.
+    static const UidUsageBreakdown emptyBreakdown;
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(), 100ns, /*sourceBreakdown=*/{},
+                                              /*uidBreakdown=*/emptyBreakdown));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, BreakdownUsageByUid) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+    UidUsageBreakdown expectedUidBreakdown;
+
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1}));
+
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 2}));
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 2, 3}));
+
+    expectedUidBreakdown.emplace_back(1, 200ns);
+    expectedUidBreakdown.emplace_back(2, 100ns);
+    expectedUidBreakdown.emplace_back(3, 0ns);
+
+    // Remove the device to force the usage session to be logged.
+    mMetricsCollector.notifyInputDevicesChanged({});
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(), 200ns, /*sourceBreakdown=*/{},
+                                              expectedUidBreakdown));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, BreakdownUsageByUid_TracksMultipleSessionsForUid) {
+    mMetricsCollector.notifyInputDevicesChanged({/*id=*/0, {generateTestDeviceInfo()}});
+    UidUsageBreakdown expectedUidBreakdown;
+
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 2}));
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 2}));
+
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1}));
+
+    setCurrentTime(TIME + 300ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 3}));
+    setCurrentTime(TIME + 400ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 3}));
+
+    setCurrentTime(TIME + 200ns + USAGE_TIMEOUT);
+    expectedUidBreakdown.emplace_back(2, 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({4}));
+
+    setCurrentTime(TIME + 300ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 4}));
+
+    setCurrentTime(TIME + 400ns + USAGE_TIMEOUT);
+    expectedUidBreakdown.emplace_back(3, 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({2, 3}));
+
+    setCurrentTime(TIME + 500ns + USAGE_TIMEOUT);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({3}));
+
+    // Remove the device to force the usage session to be logged.
+    mMetricsCollector.notifyInputDevicesChanged({});
+    expectedUidBreakdown.emplace_back(1, 300ns + USAGE_TIMEOUT);
+    expectedUidBreakdown.emplace_back(2, 0ns);
+    expectedUidBreakdown.emplace_back(3, 100ns);
+    expectedUidBreakdown.emplace_back(4, 100ns);
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(), 500ns + USAGE_TIMEOUT,
+                                              /*sourceBreakdown=*/{}, expectedUidBreakdown));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+TEST_F(InputDeviceMetricsCollectorTest, BreakdownUsageByUid_TracksUidsByDevice) {
+    mMetricsCollector.notifyInputDevicesChanged(
+            {/*id=*/0, {generateTestDeviceInfo(DEVICE_ID), generateTestDeviceInfo(DEVICE_ID_2)}});
+    UidUsageBreakdown expectedUidBreakdown1;
+    UidUsageBreakdown expectedUidBreakdown2;
+
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 2}));
+
+    setCurrentTime(TIME + 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID_2, currentTime(), uids({1, 3}));
+
+    setCurrentTime(TIME + 200ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID, currentTime(), uids({1, 2}));
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID_2));
+    mMetricsCollector.notifyDeviceInteraction(DEVICE_ID_2, currentTime(), uids({1, 3}));
+
+    setCurrentTime(TIME + 200ns + USAGE_TIMEOUT);
+    expectedUidBreakdown1.emplace_back(1, 200ns);
+    expectedUidBreakdown1.emplace_back(2, 200ns);
+    expectedUidBreakdown2.emplace_back(1, 100ns);
+    expectedUidBreakdown2.emplace_back(3, 100ns);
+    mMetricsCollector.notifyMotion(generateMotionArgs(DEVICE_ID));
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(DEVICE_ID), 200ns,
+                                              /*sourceBreakdown=*/{}, expectedUidBreakdown1));
+    ASSERT_NO_FATAL_FAILURE(assertUsageLogged(getIdentifier(DEVICE_ID_2), 100ns,
+                                              /*sourceBreakdown=*/{}, expectedUidBreakdown2));
+
+    ASSERT_NO_FATAL_FAILURE(assertUsageNotLogged());
+}
+
+} // namespace android
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 017f10b..499d944 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "../dispatcher/InputDispatcher.h"
+#include "../BlockingQueue.h"
 
 #include <android-base/properties.h>
 #include <android-base/silent_death_test.h>
@@ -24,6 +25,7 @@
 #include <fcntl.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
+#include <input/EventBuilders.h>
 #include <input/Input.h>
 #include <linux/input.h>
 #include <sys/epoll.h>
@@ -51,13 +53,16 @@
 static constexpr nsecs_t ARBITRARY_TIME = 1234;
 
 // An arbitrary device id.
-static constexpr int32_t DEVICE_ID = 1;
+static constexpr int32_t DEVICE_ID = DEFAULT_DEVICE_ID;
 static constexpr int32_t SECOND_DEVICE_ID = 2;
 
 // An arbitrary display id.
 static constexpr int32_t DISPLAY_ID = ADISPLAY_ID_DEFAULT;
 static constexpr int32_t SECOND_DISPLAY_ID = 1;
 
+// Ensure common actions are interchangeable between keys and motions for convenience.
+static_assert(AMOTION_EVENT_ACTION_DOWN == AKEY_EVENT_ACTION_DOWN);
+static_assert(AMOTION_EVENT_ACTION_UP == AKEY_EVENT_ACTION_UP);
 static constexpr int32_t ACTION_DOWN = AMOTION_EVENT_ACTION_DOWN;
 static constexpr int32_t ACTION_MOVE = AMOTION_EVENT_ACTION_MOVE;
 static constexpr int32_t ACTION_UP = AMOTION_EVENT_ACTION_UP;
@@ -91,14 +96,11 @@
 
 // The default pid and uid for windows created on the primary display by the test.
 static constexpr int32_t WINDOW_PID = 999;
-static constexpr int32_t WINDOW_UID = 1001;
+static constexpr gui::Uid WINDOW_UID{1001};
 
 // The default pid and uid for the windows created on the secondary display by the test.
 static constexpr int32_t SECONDARY_WINDOW_PID = 1010;
-static constexpr int32_t SECONDARY_WINDOW_UID = 1012;
-
-// The default policy flags to use for event injection by tests.
-static constexpr uint32_t DEFAULT_POLICY_FLAGS = POLICY_FLAG_FILTERED | POLICY_FLAG_PASS_TO_USER;
+static constexpr gui::Uid SECONDARY_WINDOW_UID{1012};
 
 // An arbitrary pid of the gesture monitor window
 static constexpr int32_t MONITOR_PID = 2001;
@@ -381,7 +383,9 @@
         mPointerCaptureRequest.reset();
     }
 
-    void assertDropTargetEquals(const sp<IBinder>& targetToken) {
+    void assertDropTargetEquals(const InputDispatcherInterface& dispatcher,
+                                const sp<IBinder>& targetToken) {
+        dispatcher.waitForIdle();
         std::scoped_lock lock(mLock);
         ASSERT_TRUE(mNotifyDropWindowWasCalled);
         ASSERT_EQ(targetToken, mDropTargetWindowToken);
@@ -415,6 +419,14 @@
         ASSERT_FALSE(mPokedUserActivity) << "Expected user activity not to have been poked";
     }
 
+    void assertNotifyDeviceInteractionWasCalled(int32_t deviceId, std::set<gui::Uid> uids) {
+        ASSERT_EQ(std::make_pair(deviceId, uids), mNotifiedInteractions.popWithTimeout(100ms));
+    }
+
+    void assertNotifyDeviceInteractionWasNotCalled() {
+        ASSERT_FALSE(mNotifiedInteractions.popWithTimeout(10ms));
+    }
+
 private:
     std::mutex mLock;
     std::unique_ptr<InputEvent> mFilteredEvent GUARDED_BY(mLock);
@@ -440,6 +452,8 @@
 
     std::chrono::milliseconds mInterceptKeyTimeout = 0ms;
 
+    BlockingQueue<std::pair<int32_t /*deviceId*/, std::set<gui::Uid>>> mNotifiedInteractions;
+
     // All three ANR-related callbacks behave the same way, so we use this generic function to wait
     // for a specific container to become non-empty. When the container is non-empty, return the
     // first entry from the container and erase it.
@@ -611,6 +625,11 @@
         mDropTargetWindowToken = token;
     }
 
+    void notifyDeviceInteraction(int32_t deviceId, nsecs_t timestamp,
+                                 const std::set<gui::Uid>& uids) override {
+        ASSERT_TRUE(mNotifiedInteractions.emplace(deviceId, uids));
+    }
+
     void assertFilterInputEventWasCalledInternal(
             const std::function<void(const InputEvent&)>& verify) {
         std::scoped_lock lock(mLock);
@@ -848,6 +867,8 @@
     mFakePolicy->assertNotifySwitchWasCalled(args);
 }
 
+namespace {
+
 // --- InputDispatcherTest SetInputWindowTest ---
 static constexpr std::chrono::duration INJECT_EVENT_TIMEOUT = 500ms;
 // Default input dispatching timeout if there is no focused application or paused window
@@ -1145,12 +1166,29 @@
         mInfo.inputConfig = WindowInfo::InputConfig::DEFAULT;
     }
 
-    sp<FakeWindowHandle> clone(
-            const std::shared_ptr<InputApplicationHandle>& inputApplicationHandle,
-            const std::unique_ptr<InputDispatcher>& dispatcher, int32_t displayId) {
-        sp<FakeWindowHandle> handle =
-                sp<FakeWindowHandle>::make(inputApplicationHandle, dispatcher,
-                                           mInfo.name + "(Mirror)", displayId, mInfo.token);
+    sp<FakeWindowHandle> clone(int32_t displayId) {
+        sp<FakeWindowHandle> handle = sp<FakeWindowHandle>::make(mInfo.name + "(Mirror)");
+        handle->mInfo = mInfo;
+        handle->mInfo.displayId = displayId;
+        handle->mInfo.id = sId++;
+        handle->mInputReceiver = mInputReceiver;
+        return handle;
+    }
+
+    /**
+     * This is different from clone, because clone will make a "mirror" window - a window with the
+     * same token, but a different ID. The original window and the clone window are allowed to be
+     * sent to the dispatcher at the same time - they can coexist inside the dispatcher.
+     * This function will create a different object of WindowInfoHandle, but with the same
+     * properties as the original object - including the ID.
+     * You can use either the old or the new object to consume the events.
+     * IMPORTANT: The duplicated object is supposed to replace the original object, and not appear
+     * at the same time inside dispatcher.
+     */
+    sp<FakeWindowHandle> duplicate() {
+        sp<FakeWindowHandle> handle = sp<FakeWindowHandle>::make(mName);
+        handle->mInfo = mInfo;
+        handle->mInputReceiver = mInputReceiver;
         return handle;
     }
 
@@ -1407,7 +1445,7 @@
 
     const std::string& getName() { return mName; }
 
-    void setOwnerInfo(int32_t ownerPid, int32_t ownerUid) {
+    void setOwnerInfo(int32_t ownerPid, gui::Uid ownerUid) {
         mInfo.ownerPid = ownerPid;
         mInfo.ownerUid = ownerUid;
     }
@@ -1419,9 +1457,11 @@
     int getChannelFd() { return mInputReceiver->getChannelFd(); }
 
 private:
+    FakeWindowHandle(std::string name) : mName(name){};
     const std::string mName;
-    std::unique_ptr<FakeInputReceiver> mInputReceiver;
+    std::shared_ptr<FakeInputReceiver> mInputReceiver;
     static std::atomic<int32_t> sId; // each window gets a unique id, like in surfaceflinger
+    friend class sp<FakeWindowHandle>;
 };
 
 std::atomic<int32_t> FakeWindowHandle::sId{1};
@@ -1431,7 +1471,7 @@
         int32_t displayId = ADISPLAY_ID_NONE,
         InputEventInjectionSync syncMode = InputEventInjectionSync::WAIT_FOR_RESULT,
         std::chrono::milliseconds injectionTimeout = INJECT_EVENT_TIMEOUT,
-        bool allowKeyRepeat = true, std::optional<int32_t> targetUid = {},
+        bool allowKeyRepeat = true, std::optional<gui::Uid> targetUid = {},
         uint32_t policyFlags = DEFAULT_POLICY_FLAGS) {
     KeyEvent event;
     nsecs_t currentTime = systemTime(SYSTEM_TIME_MONOTONIC);
@@ -1468,252 +1508,11 @@
     return injectKey(dispatcher, AKEY_EVENT_ACTION_UP, /*repeatCount=*/0, displayId);
 }
 
-class PointerBuilder {
-public:
-    PointerBuilder(int32_t id, ToolType toolType) {
-        mProperties.clear();
-        mProperties.id = id;
-        mProperties.toolType = toolType;
-        mCoords.clear();
-    }
-
-    PointerBuilder& x(float x) { return axis(AMOTION_EVENT_AXIS_X, x); }
-
-    PointerBuilder& y(float y) { return axis(AMOTION_EVENT_AXIS_Y, y); }
-
-    PointerBuilder& axis(int32_t axis, float value) {
-        mCoords.setAxisValue(axis, value);
-        return *this;
-    }
-
-    PointerProperties buildProperties() const { return mProperties; }
-
-    PointerCoords buildCoords() const { return mCoords; }
-
-private:
-    PointerProperties mProperties;
-    PointerCoords mCoords;
-};
-
-class MotionEventBuilder {
-public:
-    MotionEventBuilder(int32_t action, int32_t source) {
-        mAction = action;
-        mSource = source;
-        mEventTime = systemTime(SYSTEM_TIME_MONOTONIC);
-        mDownTime = mEventTime;
-    }
-
-    MotionEventBuilder& deviceId(int32_t deviceId) {
-        mDeviceId = deviceId;
-        return *this;
-    }
-
-    MotionEventBuilder& downTime(nsecs_t downTime) {
-        mDownTime = downTime;
-        return *this;
-    }
-
-    MotionEventBuilder& eventTime(nsecs_t eventTime) {
-        mEventTime = eventTime;
-        return *this;
-    }
-
-    MotionEventBuilder& displayId(int32_t displayId) {
-        mDisplayId = displayId;
-        return *this;
-    }
-
-    MotionEventBuilder& actionButton(int32_t actionButton) {
-        mActionButton = actionButton;
-        return *this;
-    }
-
-    MotionEventBuilder& buttonState(int32_t buttonState) {
-        mButtonState = buttonState;
-        return *this;
-    }
-
-    MotionEventBuilder& rawXCursorPosition(float rawXCursorPosition) {
-        mRawXCursorPosition = rawXCursorPosition;
-        return *this;
-    }
-
-    MotionEventBuilder& rawYCursorPosition(float rawYCursorPosition) {
-        mRawYCursorPosition = rawYCursorPosition;
-        return *this;
-    }
-
-    MotionEventBuilder& pointer(PointerBuilder pointer) {
-        mPointers.push_back(pointer);
-        return *this;
-    }
-
-    MotionEventBuilder& addFlag(uint32_t flags) {
-        mFlags |= flags;
-        return *this;
-    }
-
-    MotionEvent build() {
-        std::vector<PointerProperties> pointerProperties;
-        std::vector<PointerCoords> pointerCoords;
-        for (const PointerBuilder& pointer : mPointers) {
-            pointerProperties.push_back(pointer.buildProperties());
-            pointerCoords.push_back(pointer.buildCoords());
-        }
-
-        // Set mouse cursor position for the most common cases to avoid boilerplate.
-        if (mSource == AINPUT_SOURCE_MOUSE &&
-            !MotionEvent::isValidCursorPosition(mRawXCursorPosition, mRawYCursorPosition)) {
-            mRawXCursorPosition = pointerCoords[0].getX();
-            mRawYCursorPosition = pointerCoords[0].getY();
-        }
-
-        MotionEvent event;
-        ui::Transform identityTransform;
-        event.initialize(InputEvent::nextId(), mDeviceId, mSource, mDisplayId, INVALID_HMAC,
-                         mAction, mActionButton, mFlags, /* edgeFlags */ 0, AMETA_NONE,
-                         mButtonState, MotionClassification::NONE, identityTransform,
-                         /* xPrecision */ 0, /* yPrecision */ 0, mRawXCursorPosition,
-                         mRawYCursorPosition, identityTransform, mDownTime, mEventTime,
-                         mPointers.size(), pointerProperties.data(), pointerCoords.data());
-
-        return event;
-    }
-
-private:
-    int32_t mAction;
-    int32_t mDeviceId = DEVICE_ID;
-    int32_t mSource;
-    nsecs_t mDownTime;
-    nsecs_t mEventTime;
-    int32_t mDisplayId{ADISPLAY_ID_DEFAULT};
-    int32_t mActionButton{0};
-    int32_t mButtonState{0};
-    int32_t mFlags{0};
-    float mRawXCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
-    float mRawYCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
-
-    std::vector<PointerBuilder> mPointers;
-};
-
-class MotionArgsBuilder {
-public:
-    MotionArgsBuilder(int32_t action, int32_t source) {
-        mAction = action;
-        mSource = source;
-        mEventTime = systemTime(SYSTEM_TIME_MONOTONIC);
-        mDownTime = mEventTime;
-    }
-
-    MotionArgsBuilder& deviceId(int32_t deviceId) {
-        mDeviceId = deviceId;
-        return *this;
-    }
-
-    MotionArgsBuilder& downTime(nsecs_t downTime) {
-        mDownTime = downTime;
-        return *this;
-    }
-
-    MotionArgsBuilder& eventTime(nsecs_t eventTime) {
-        mEventTime = eventTime;
-        return *this;
-    }
-
-    MotionArgsBuilder& displayId(int32_t displayId) {
-        mDisplayId = displayId;
-        return *this;
-    }
-
-    MotionArgsBuilder& policyFlags(int32_t policyFlags) {
-        mPolicyFlags = policyFlags;
-        return *this;
-    }
-
-    MotionArgsBuilder& actionButton(int32_t actionButton) {
-        mActionButton = actionButton;
-        return *this;
-    }
-
-    MotionArgsBuilder& buttonState(int32_t buttonState) {
-        mButtonState = buttonState;
-        return *this;
-    }
-
-    MotionArgsBuilder& rawXCursorPosition(float rawXCursorPosition) {
-        mRawXCursorPosition = rawXCursorPosition;
-        return *this;
-    }
-
-    MotionArgsBuilder& rawYCursorPosition(float rawYCursorPosition) {
-        mRawYCursorPosition = rawYCursorPosition;
-        return *this;
-    }
-
-    MotionArgsBuilder& pointer(PointerBuilder pointer) {
-        mPointers.push_back(pointer);
-        return *this;
-    }
-
-    MotionArgsBuilder& addFlag(uint32_t flags) {
-        mFlags |= flags;
-        return *this;
-    }
-
-    MotionArgsBuilder& classification(MotionClassification classification) {
-        mClassification = classification;
-        return *this;
-    }
-
-    NotifyMotionArgs build() {
-        std::vector<PointerProperties> pointerProperties;
-        std::vector<PointerCoords> pointerCoords;
-        for (const PointerBuilder& pointer : mPointers) {
-            pointerProperties.push_back(pointer.buildProperties());
-            pointerCoords.push_back(pointer.buildCoords());
-        }
-
-        // Set mouse cursor position for the most common cases to avoid boilerplate.
-        if (mSource == AINPUT_SOURCE_MOUSE &&
-            !MotionEvent::isValidCursorPosition(mRawXCursorPosition, mRawYCursorPosition)) {
-            mRawXCursorPosition = pointerCoords[0].getX();
-            mRawYCursorPosition = pointerCoords[0].getY();
-        }
-
-        NotifyMotionArgs args(InputEvent::nextId(), mEventTime, /*readTime=*/mEventTime, mDeviceId,
-                              mSource, mDisplayId, mPolicyFlags, mAction, mActionButton, mFlags,
-                              AMETA_NONE, mButtonState, mClassification, /*edgeFlags=*/0,
-                              mPointers.size(), pointerProperties.data(), pointerCoords.data(),
-                              /*xPrecision=*/0, /*yPrecision=*/0, mRawXCursorPosition,
-                              mRawYCursorPosition, mDownTime, /*videoFrames=*/{});
-
-        return args;
-    }
-
-private:
-    int32_t mAction;
-    int32_t mDeviceId = DEVICE_ID;
-    int32_t mSource;
-    nsecs_t mDownTime;
-    nsecs_t mEventTime;
-    int32_t mDisplayId{ADISPLAY_ID_DEFAULT};
-    int32_t mPolicyFlags = DEFAULT_POLICY_FLAGS;
-    int32_t mActionButton{0};
-    int32_t mButtonState{0};
-    int32_t mFlags{0};
-    MotionClassification mClassification{MotionClassification::NONE};
-    float mRawXCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
-    float mRawYCursorPosition{AMOTION_EVENT_INVALID_CURSOR_POSITION};
-
-    std::vector<PointerBuilder> mPointers;
-};
-
 static InputEventInjectionResult injectMotionEvent(
         const std::unique_ptr<InputDispatcher>& dispatcher, const MotionEvent& event,
         std::chrono::milliseconds injectionTimeout = INJECT_EVENT_TIMEOUT,
         InputEventInjectionSync injectionMode = InputEventInjectionSync::WAIT_FOR_RESULT,
-        std::optional<int32_t> targetUid = {}, uint32_t policyFlags = DEFAULT_POLICY_FLAGS) {
+        std::optional<gui::Uid> targetUid = {}, uint32_t policyFlags = DEFAULT_POLICY_FLAGS) {
     return dispatcher->injectInputEvent(&event, targetUid, injectionMode, injectionTimeout,
                                         policyFlags);
 }
@@ -1726,20 +1525,22 @@
         std::chrono::milliseconds injectionTimeout = INJECT_EVENT_TIMEOUT,
         InputEventInjectionSync injectionMode = InputEventInjectionSync::WAIT_FOR_RESULT,
         nsecs_t eventTime = systemTime(SYSTEM_TIME_MONOTONIC),
-        std::optional<int32_t> targetUid = {}, uint32_t policyFlags = DEFAULT_POLICY_FLAGS) {
-    MotionEvent event = MotionEventBuilder(action, source)
-                                .displayId(displayId)
-                                .eventTime(eventTime)
-                                .rawXCursorPosition(cursorPosition.x)
-                                .rawYCursorPosition(cursorPosition.y)
-                                .pointer(PointerBuilder(/*id=*/0, ToolType::FINGER)
-                                                 .x(position.x)
-                                                 .y(position.y))
-                                .build();
+        std::optional<gui::Uid> targetUid = {}, uint32_t policyFlags = DEFAULT_POLICY_FLAGS) {
+    MotionEventBuilder motionBuilder =
+            MotionEventBuilder(action, source)
+                    .displayId(displayId)
+                    .eventTime(eventTime)
+                    .rawXCursorPosition(cursorPosition.x)
+                    .rawYCursorPosition(cursorPosition.y)
+                    .pointer(
+                            PointerBuilder(/*id=*/0, ToolType::FINGER).x(position.x).y(position.y));
+    if (MotionEvent::getActionMasked(action) == ACTION_DOWN) {
+        motionBuilder.downTime(eventTime);
+    }
 
     // Inject event until dispatch out.
-    return injectMotionEvent(dispatcher, event, injectionTimeout, injectionMode, targetUid,
-                             policyFlags);
+    return injectMotionEvent(dispatcher, motionBuilder.build(), injectionTimeout, injectionMode,
+                             targetUid, policyFlags);
 }
 
 static InputEventInjectionResult injectMotionDown(
@@ -1833,6 +1634,8 @@
     return NotifyPointerCaptureChangedArgs(/*id=*/0, systemTime(SYSTEM_TIME_MONOTONIC), request);
 }
 
+} // namespace
+
 /**
  * When a window unexpectedly disposes of its input channel, policy should be notified about the
  * broken channel.
@@ -3843,6 +3646,9 @@
                 std::chrono::nanoseconds(interceptKeyTimeout).count());
 }
 
+/**
+ * Keys with ACTION_UP are delivered immediately, even if a long 'intercept key timeout' is set.
+ */
 TEST_F(InputDispatcherTest, InterceptKeyIfKeyUp) {
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window = sp<FakeWindowHandle>::make(application, mDispatcher,
@@ -3854,12 +3660,14 @@
 
     window->consumeFocusEvent(true);
 
-    mFakePolicy->setInterceptKeyTimeout(150ms);
     mDispatcher->notifyKey(generateKeyArgs(AKEY_EVENT_ACTION_DOWN, ADISPLAY_ID_DEFAULT));
-    mDispatcher->notifyKey(generateKeyArgs(AKEY_EVENT_ACTION_UP, ADISPLAY_ID_DEFAULT));
-
-    // Window should receive key event immediately when same key up.
     window->consumeKeyDown(ADISPLAY_ID_DEFAULT);
+
+    // Set a value that's significantly larger than the default consumption timeout. If the
+    // implementation is correct, the actual value doesn't matter; it won't slow down the test.
+    mFakePolicy->setInterceptKeyTimeout(600ms);
+    mDispatcher->notifyKey(generateKeyArgs(AKEY_EVENT_ACTION_UP, ADISPLAY_ID_DEFAULT));
+    // Window should receive key event immediately when same key up.
     window->consumeKeyUp(ADISPLAY_ID_DEFAULT);
 }
 
@@ -4130,6 +3938,72 @@
 }
 
 /**
+ * Send a two-pointer gesture to a single window. The window's orientation changes in response to
+ * the first pointer.
+ * Ensure that the second pointer is not sent to the window.
+ *
+ * The subsequent gesture should be correctly delivered to the window.
+ */
+TEST_F(InputDispatcherTest, MultiplePointersWithRotatingWindow) {
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 400, 400));
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {window}}});
+
+    const nsecs_t baseTime = systemTime(SYSTEM_TIME_MONOTONIC);
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .downTime(baseTime + 10)
+                                      .eventTime(baseTime + 10)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+
+    window->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+
+    // We need a new window object for the same window, because dispatcher will store objects by
+    // reference. That means that the testing code and the dispatcher will refer to the same shared
+    // object. Calling window->setTransform here would affect dispatcher's comparison
+    // of the old window to the new window, since both the old window and the new window would be
+    // updated to the same value.
+    sp<FakeWindowHandle> windowDup = window->duplicate();
+
+    // Change the transform so that the orientation is now different from original.
+    windowDup->setWindowTransform(0, -1, 1, 0);
+
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {windowDup}}});
+
+    window->consumeMotionEvent(WithMotionAction(ACTION_CANCEL));
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .downTime(baseTime + 10)
+                                      .eventTime(baseTime + 30)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(200).y(200))
+                                      .build());
+
+    // Finish the gesture and start a new one. Ensure the new gesture is sent to the window
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .downTime(baseTime + 10)
+                                      .eventTime(baseTime + 40)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(200).y(200))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .downTime(baseTime + 10)
+                                      .eventTime(baseTime + 50)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(100).y(100))
+                                      .build());
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .downTime(baseTime + 60)
+                                      .eventTime(baseTime + 60)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(40).y(40))
+                                      .build());
+
+    windowDup->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+}
+
+/**
  * Ensure the correct coordinate spaces are used by InputDispatcher.
  *
  * InputDispatcher works in the display space, so its coordinate system is relative to the display
@@ -4710,16 +4584,13 @@
             sp<FakeWindowHandle>::make(application, mDispatcher, "D_1_W2", ADISPLAY_ID_DEFAULT);
     secondWindowInPrimary->setFrame(Rect(100, 0, 200, 100));
 
-    sp<FakeWindowHandle> mirrorWindowInPrimary =
-            firstWindowInPrimary->clone(application, mDispatcher, ADISPLAY_ID_DEFAULT);
+    sp<FakeWindowHandle> mirrorWindowInPrimary = firstWindowInPrimary->clone(ADISPLAY_ID_DEFAULT);
     mirrorWindowInPrimary->setFrame(Rect(0, 100, 100, 200));
 
-    sp<FakeWindowHandle> firstWindowInSecondary =
-            firstWindowInPrimary->clone(application, mDispatcher, SECOND_DISPLAY_ID);
+    sp<FakeWindowHandle> firstWindowInSecondary = firstWindowInPrimary->clone(SECOND_DISPLAY_ID);
     firstWindowInSecondary->setFrame(Rect(0, 0, 100, 100));
 
-    sp<FakeWindowHandle> secondWindowInSecondary =
-            secondWindowInPrimary->clone(application, mDispatcher, SECOND_DISPLAY_ID);
+    sp<FakeWindowHandle> secondWindowInSecondary = secondWindowInPrimary->clone(SECOND_DISPLAY_ID);
     secondWindowInPrimary->setFrame(Rect(100, 0, 200, 100));
 
     // Update window info, let it find window handle of second display first.
@@ -4769,16 +4640,13 @@
             sp<FakeWindowHandle>::make(application, mDispatcher, "D_1_W2", ADISPLAY_ID_DEFAULT);
     secondWindowInPrimary->setFrame(Rect(100, 0, 200, 100));
 
-    sp<FakeWindowHandle> mirrorWindowInPrimary =
-            firstWindowInPrimary->clone(application, mDispatcher, ADISPLAY_ID_DEFAULT);
+    sp<FakeWindowHandle> mirrorWindowInPrimary = firstWindowInPrimary->clone(ADISPLAY_ID_DEFAULT);
     mirrorWindowInPrimary->setFrame(Rect(0, 100, 100, 200));
 
-    sp<FakeWindowHandle> firstWindowInSecondary =
-            firstWindowInPrimary->clone(application, mDispatcher, SECOND_DISPLAY_ID);
+    sp<FakeWindowHandle> firstWindowInSecondary = firstWindowInPrimary->clone(SECOND_DISPLAY_ID);
     firstWindowInSecondary->setFrame(Rect(0, 0, 100, 100));
 
-    sp<FakeWindowHandle> secondWindowInSecondary =
-            secondWindowInPrimary->clone(application, mDispatcher, SECOND_DISPLAY_ID);
+    sp<FakeWindowHandle> secondWindowInSecondary = secondWindowInPrimary->clone(SECOND_DISPLAY_ID);
     secondWindowInPrimary->setFrame(Rect(100, 0, 200, 100));
 
     // Update window info, let it find window handle of second display first.
@@ -4833,6 +4701,7 @@
     window->consumeKeyDown(ADISPLAY_ID_DEFAULT);
 
     // Should have poked user activity
+    mDispatcher->waitForIdle();
     mFakePolicy->assertUserActivityPoked();
 }
 
@@ -4854,6 +4723,7 @@
     window->consumeKeyDown(ADISPLAY_ID_DEFAULT);
 
     // Should have poked user activity
+    mDispatcher->waitForIdle();
     mFakePolicy->assertUserActivityNotPoked();
 }
 
@@ -4921,6 +4791,26 @@
     mFakePolicy->assertUserActivityPoked();
 }
 
+TEST_F(InputDispatcherTest, InjectedTouchesPokeUserActivity) {
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+    sp<FakeWindowHandle> window = sp<FakeWindowHandle>::make(application, mDispatcher,
+                                                             "Fake Window", ADISPLAY_ID_DEFAULT);
+
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {window}}});
+
+    ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
+              injectMotionEvent(mDispatcher, AMOTION_EVENT_ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN,
+                                ADISPLAY_ID_DEFAULT, {100, 100}))
+            << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
+
+    window->consumeMotionEvent(
+            AllOf(WithMotionAction(ACTION_DOWN), WithDisplayId(ADISPLAY_ID_DEFAULT)));
+
+    // Should have poked user activity
+    mDispatcher->waitForIdle();
+    mFakePolicy->assertUserActivityPoked();
+}
+
 TEST_F(InputDispatcherTest, UnfocusedWindow_DoesNotReceiveFocusEventOrKeyEvent) {
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window = sp<FakeWindowHandle>::make(application, mDispatcher,
@@ -5621,7 +5511,7 @@
  */
 TEST_F(InputDispatcherTest, SlipperyWindow_SetsFlagPartiallyObscured) {
     constexpr int32_t SLIPPERY_PID = WINDOW_PID + 1;
-    constexpr int32_t SLIPPERY_UID = WINDOW_UID + 1;
+    constexpr gui::Uid SLIPPERY_UID{WINDOW_UID.val() + 1};
 
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
@@ -5701,6 +5591,109 @@
     rightDropTouchesWindow->assertNoEvents();
 }
 
+TEST_F(InputDispatcherTest, NotifiesDeviceInteractionsWithMotions) {
+    using Uid = gui::Uid;
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+    sp<FakeWindowHandle> leftWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Left", ADISPLAY_ID_DEFAULT);
+    leftWindow->setFrame(Rect(0, 0, 100, 100));
+    leftWindow->setOwnerInfo(1, Uid{101});
+
+    sp<FakeWindowHandle> rightSpy =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right spy", ADISPLAY_ID_DEFAULT);
+    rightSpy->setFrame(Rect(100, 0, 200, 100));
+    rightSpy->setOwnerInfo(2, Uid{102});
+    rightSpy->setSpy(true);
+    rightSpy->setTrustedOverlay(true);
+
+    sp<FakeWindowHandle> rightWindow =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Right", ADISPLAY_ID_DEFAULT);
+    rightWindow->setFrame(Rect(100, 0, 200, 100));
+    rightWindow->setOwnerInfo(3, Uid{103});
+
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {rightSpy, rightWindow, leftWindow}}});
+
+    // Touch in the left window
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+                                      .build());
+    ASSERT_NO_FATAL_FAILURE(leftWindow->consumeMotionDown());
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(
+            mFakePolicy->assertNotifyDeviceInteractionWasCalled(DEVICE_ID, {Uid{101}}));
+
+    // Touch another finger over the right windows
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+                                      .build());
+    ASSERT_NO_FATAL_FAILURE(rightSpy->consumeMotionDown());
+    ASSERT_NO_FATAL_FAILURE(rightWindow->consumeMotionDown());
+    ASSERT_NO_FATAL_FAILURE(leftWindow->consumeMotionMove());
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(
+            mFakePolicy->assertNotifyDeviceInteractionWasCalled(DEVICE_ID,
+                                                                {Uid{101}, Uid{102}, Uid{103}}));
+
+    // Release finger over left window. The UP actions are not treated as device interaction.
+    // The windows that did not receive the UP pointer will receive MOVE events, but since this
+    // is part of the UP action, we do not treat this as device interaction.
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_0_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(50).y(50))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+                                      .build());
+    ASSERT_NO_FATAL_FAILURE(leftWindow->consumeMotionUp());
+    ASSERT_NO_FATAL_FAILURE(rightSpy->consumeMotionMove());
+    ASSERT_NO_FATAL_FAILURE(rightWindow->consumeMotionMove());
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(mFakePolicy->assertNotifyDeviceInteractionWasNotCalled());
+
+    // Move remaining finger
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+                                      .build());
+    ASSERT_NO_FATAL_FAILURE(rightSpy->consumeMotionMove());
+    ASSERT_NO_FATAL_FAILURE(rightWindow->consumeMotionMove());
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(
+            mFakePolicy->assertNotifyDeviceInteractionWasCalled(DEVICE_ID, {Uid{102}, Uid{103}}));
+
+    // Release all fingers
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(150).y(50))
+                                      .build());
+    ASSERT_NO_FATAL_FAILURE(rightSpy->consumeMotionUp());
+    ASSERT_NO_FATAL_FAILURE(rightWindow->consumeMotionUp());
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(mFakePolicy->assertNotifyDeviceInteractionWasNotCalled());
+}
+
+TEST_F(InputDispatcherTest, NotifiesDeviceInteractionsWithKeys) {
+    std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
+
+    sp<FakeWindowHandle> window =
+            sp<FakeWindowHandle>::make(application, mDispatcher, "Window", ADISPLAY_ID_DEFAULT);
+    window->setFrame(Rect(0, 0, 100, 100));
+    window->setOwnerInfo(1, gui::Uid{101});
+
+    mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {window}}});
+    setFocusedWindow(window);
+    ASSERT_NO_FATAL_FAILURE(window->consumeFocusEvent(true));
+
+    mDispatcher->notifyKey(KeyArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_KEYBOARD).build());
+    ASSERT_NO_FATAL_FAILURE(window->consumeKeyDown(ADISPLAY_ID_DEFAULT));
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(
+            mFakePolicy->assertNotifyDeviceInteractionWasCalled(DEVICE_ID, {gui::Uid{101}}));
+
+    // The UP actions are not treated as device interaction.
+    mDispatcher->notifyKey(KeyArgsBuilder(ACTION_UP, AINPUT_SOURCE_KEYBOARD).build());
+    ASSERT_NO_FATAL_FAILURE(window->consumeKeyUp(ADISPLAY_ID_DEFAULT));
+    mDispatcher->waitForIdle();
+    ASSERT_NO_FATAL_FAILURE(mFakePolicy->assertNotifyDeviceInteractionWasNotCalled());
+}
+
 class InputDispatcherKeyRepeatTest : public InputDispatcherTest {
 protected:
     static constexpr nsecs_t KEY_REPEAT_TIMEOUT = 40 * 1000000; // 40 ms
@@ -6078,7 +6071,7 @@
         mDispatcher->notifyMotion(motionArgs);
         ASSERT_TRUE(mDispatcher->waitForIdle());
         if (expectToBeFiltered) {
-            const auto xy = transform.transform(motionArgs.pointerCoords->getXYValue());
+            const auto xy = transform.transform(motionArgs.pointerCoords[0].getXYValue());
             mFakePolicy->assertFilterInputEventWasCalled(motionArgs, xy);
         } else {
             mFakePolicy->assertFilterInputEventWasNotCalled();
@@ -7096,6 +7089,55 @@
     mWindow->assertNoEvents();
 }
 
+/**
+ * Send an event to the app and have the app not respond right away.
+ * When ANR is raised, policy will tell the dispatcher to cancel the events for that window.
+ * So InputDispatcher will enqueue ACTION_CANCEL event as well.
+ * At some point, the window becomes responsive again.
+ * Ensure that subsequent events get dropped, and the next gesture is delivered.
+ */
+TEST_F(InputDispatcherSingleWindowAnr, TwoGesturesWithAnr) {
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(10).y(10))
+                                      .build());
+
+    std::optional<uint32_t> sequenceNum = mWindow->receiveEvent(); // ACTION_DOWN
+    ASSERT_TRUE(sequenceNum);
+    const std::chrono::duration timeout = mWindow->getDispatchingTimeout(DISPATCHING_TIMEOUT);
+    mFakePolicy->assertNotifyWindowUnresponsiveWasCalled(timeout, mWindow);
+
+    mWindow->finishEvent(*sequenceNum);
+    mWindow->consumeMotionEvent(WithMotionAction(ACTION_CANCEL));
+    ASSERT_TRUE(mDispatcher->waitForIdle());
+    mFakePolicy->assertNotifyWindowResponsiveWasCalled(mWindow->getToken(), mWindow->getPid());
+
+    // Now that the window is responsive, let's continue the gesture.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_MOVE, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(11).y(11))
+                                      .build());
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(11).y(11))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(3).y(3))
+                                      .build());
+
+    mDispatcher->notifyMotion(MotionArgsBuilder(POINTER_1_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(11).y(11))
+                                      .pointer(PointerBuilder(1, ToolType::FINGER).x(3).y(3))
+                                      .build());
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(11).y(11))
+                                      .build());
+    // We already canceled this pointer, so the window shouldn't get any new events.
+    mWindow->assertNoEvents();
+
+    // Start another one.
+    mDispatcher->notifyMotion(MotionArgsBuilder(ACTION_DOWN, AINPUT_SOURCE_TOUCHSCREEN)
+                                      .pointer(PointerBuilder(0, ToolType::FINGER).x(15).y(15))
+                                      .build());
+    mWindow->consumeMotionEvent(WithMotionAction(ACTION_DOWN));
+}
+
 class InputDispatcherMultiWindowAnr : public InputDispatcherTest {
     virtual void SetUp() override {
         InputDispatcherTest::SetUp();
@@ -7840,9 +7882,9 @@
     static_assert(1 - (1 - OPACITY_FAR_BELOW_THRESHOLD) * (1 - OPACITY_FAR_BELOW_THRESHOLD) <
                   MAXIMUM_OBSCURING_OPACITY);
 
-    static const int32_t TOUCHED_APP_UID = 10001;
-    static const int32_t APP_B_UID = 10002;
-    static const int32_t APP_C_UID = 10003;
+    static constexpr gui::Uid TOUCHED_APP_UID{10001};
+    static constexpr gui::Uid APP_B_UID{10002};
+    static constexpr gui::Uid APP_C_UID{10003};
 
     sp<FakeWindowHandle> mTouchWindow;
 
@@ -7857,7 +7899,7 @@
         mTouchWindow.clear();
     }
 
-    sp<FakeWindowHandle> getOccludingWindow(int32_t uid, std::string name, TouchOcclusionMode mode,
+    sp<FakeWindowHandle> getOccludingWindow(gui::Uid uid, std::string name, TouchOcclusionMode mode,
                                             float alpha = 1.0f) {
         sp<FakeWindowHandle> window = getWindow(uid, name);
         window->setTouchable(false);
@@ -7866,12 +7908,12 @@
         return window;
     }
 
-    sp<FakeWindowHandle> getWindow(int32_t uid, std::string name) {
+    sp<FakeWindowHandle> getWindow(gui::Uid uid, std::string name) {
         std::shared_ptr<FakeApplicationHandle> app = std::make_shared<FakeApplicationHandle>();
         sp<FakeWindowHandle> window =
                 sp<FakeWindowHandle>::make(app, mDispatcher, name, ADISPLAY_ID_DEFAULT);
         // Generate an arbitrary PID based on the UID
-        window->setOwnerInfo(1777 + (uid % 10000), uid);
+        window->setOwnerInfo(1777 + (uid.val() % 10000), uid);
         return window;
     }
 
@@ -8410,7 +8452,7 @@
                              {150, 50}))
             << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
     mDragWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT);
-    mFakePolicy->assertDropTargetEquals(mSecondWindow->getToken());
+    mFakePolicy->assertDropTargetEquals(*mDispatcher, mSecondWindow->getToken());
     mWindow->assertNoEvents();
     mSecondWindow->assertNoEvents();
 }
@@ -8441,7 +8483,7 @@
     mDragWindow->consumeMotionMove(ADISPLAY_ID_DEFAULT);
     mWindow->assertNoEvents();
     mSecondWindow->assertNoEvents();
-    mFakePolicy->assertDropTargetEquals(mSecondWindow->getToken());
+    mFakePolicy->assertDropTargetEquals(*mDispatcher, mSecondWindow->getToken());
 
     // nothing to the window.
     ASSERT_EQ(InputEventInjectionResult::SUCCEEDED,
@@ -8487,7 +8529,7 @@
                              {150, 50}))
             << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
     mDragWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT);
-    mFakePolicy->assertDropTargetEquals(nullptr);
+    mFakePolicy->assertDropTargetEquals(*mDispatcher, nullptr);
     mWindow->assertNoEvents();
     mSecondWindow->assertNoEvents();
 }
@@ -8570,7 +8612,7 @@
               injectMotionEvent(mDispatcher, secondFingerUpEvent, INJECT_EVENT_TIMEOUT,
                                 InputEventInjectionSync::WAIT_FOR_RESULT));
     mDragWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT);
-    mFakePolicy->assertDropTargetEquals(mWindow->getToken());
+    mFakePolicy->assertDropTargetEquals(*mDispatcher, mWindow->getToken());
     mWindow->assertNoEvents();
     mSecondWindow->consumeMotionMove();
 }
@@ -8620,7 +8662,7 @@
                              {150, 50}))
             << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
     mDragWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT);
-    mFakePolicy->assertDropTargetEquals(mSecondWindow->getToken());
+    mFakePolicy->assertDropTargetEquals(*mDispatcher, mSecondWindow->getToken());
     mWindow->assertNoEvents();
     mSecondWindow->assertNoEvents();
 }
@@ -8669,7 +8711,7 @@
                                         .build()))
             << "Inject motion event should return InputEventInjectionResult::SUCCEEDED";
     mDragWindow->consumeMotionUp(ADISPLAY_ID_DEFAULT);
-    mFakePolicy->assertDropTargetEquals(mSecondWindow->getToken());
+    mFakePolicy->assertDropTargetEquals(*mDispatcher, mSecondWindow->getToken());
     mWindow->assertNoEvents();
     mSecondWindow->assertNoEvents();
 }
@@ -8693,6 +8735,8 @@
 
     mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_DOWN,
                                                  AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT));
+    mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN,
+                                                 ADISPLAY_ID_DEFAULT));
     window->assertNoEvents();
 
     // With the flag cleared, the window should get input
@@ -8715,13 +8759,13 @@
             sp<FakeWindowHandle>::make(obscuringApplication, mDispatcher, "obscuringWindow",
                                        ADISPLAY_ID_DEFAULT);
     obscuringWindow->setFrame(Rect(0, 0, 50, 50));
-    obscuringWindow->setOwnerInfo(111, 111);
+    obscuringWindow->setOwnerInfo(111, gui::Uid{111});
     obscuringWindow->setTouchable(false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window = sp<FakeWindowHandle>::make(application, mDispatcher,
                                                              "Test window", ADISPLAY_ID_DEFAULT);
     window->setDropInputIfObscured(true);
-    window->setOwnerInfo(222, 222);
+    window->setOwnerInfo(222, gui::Uid{222});
     mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
     window->setFocusable(true);
     mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {obscuringWindow, window}}});
@@ -8734,6 +8778,8 @@
 
     mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_DOWN,
                                                  AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT));
+    mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN,
+                                                 ADISPLAY_ID_DEFAULT));
     window->assertNoEvents();
 
     // With the flag cleared, the window should get input
@@ -8756,13 +8802,13 @@
             sp<FakeWindowHandle>::make(obscuringApplication, mDispatcher, "obscuringWindow",
                                        ADISPLAY_ID_DEFAULT);
     obscuringWindow->setFrame(Rect(0, 0, 50, 50));
-    obscuringWindow->setOwnerInfo(111, 111);
+    obscuringWindow->setOwnerInfo(111, gui::Uid{111});
     obscuringWindow->setTouchable(false);
     std::shared_ptr<FakeApplicationHandle> application = std::make_shared<FakeApplicationHandle>();
     sp<FakeWindowHandle> window = sp<FakeWindowHandle>::make(application, mDispatcher,
                                                              "Test window", ADISPLAY_ID_DEFAULT);
     window->setDropInputIfObscured(true);
-    window->setOwnerInfo(222, 222);
+    window->setOwnerInfo(222, gui::Uid{222});
     mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
     window->setFocusable(true);
     mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {obscuringWindow, window}}});
@@ -8775,6 +8821,8 @@
 
     mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_DOWN,
                                                  AINPUT_SOURCE_TOUCHSCREEN, ADISPLAY_ID_DEFAULT));
+    mDispatcher->notifyMotion(generateMotionArgs(AMOTION_EVENT_ACTION_UP, AINPUT_SOURCE_TOUCHSCREEN,
+                                                 ADISPLAY_ID_DEFAULT));
     window->assertNoEvents();
 
     // When the window is no longer obscured because it went on top, it should get input
@@ -8837,7 +8885,7 @@
         }
     }
 
-    void changeAndVerifyTouchModeInMainDisplayOnly(bool inTouchMode, int32_t pid, int32_t uid,
+    void changeAndVerifyTouchModeInMainDisplayOnly(bool inTouchMode, int32_t pid, gui::Uid uid,
                                                    bool hasPermission) {
         ASSERT_TRUE(mDispatcher->setInTouchMode(inTouchMode, pid, uid, hasPermission,
                                                 ADISPLAY_ID_DEFAULT));
@@ -8857,8 +8905,8 @@
 TEST_F(InputDispatcherTouchModeChangedTests, NonFocusedWindowOwnerCannotChangeTouchMode) {
     const WindowInfo& windowInfo = *mWindow->getInfo();
     int32_t ownerPid = windowInfo.ownerPid;
-    int32_t ownerUid = windowInfo.ownerUid;
-    mWindow->setOwnerInfo(/* pid */ -1, /* uid */ -1);
+    gui::Uid ownerUid = windowInfo.ownerUid;
+    mWindow->setOwnerInfo(/*pid=*/-1, gui::Uid::INVALID);
     ASSERT_FALSE(mDispatcher->setInTouchMode(InputDispatcher::kDefaultInTouchMode, ownerPid,
                                              ownerUid, /*hasPermission=*/false,
                                              ADISPLAY_ID_DEFAULT));
@@ -8869,8 +8917,8 @@
 TEST_F(InputDispatcherTouchModeChangedTests, NonWindowOwnerMayChangeTouchModeOnPermissionGranted) {
     const WindowInfo& windowInfo = *mWindow->getInfo();
     int32_t ownerPid = windowInfo.ownerPid;
-    int32_t ownerUid = windowInfo.ownerUid;
-    mWindow->setOwnerInfo(/* pid */ -1, /* uid */ -1);
+    gui::Uid ownerUid = windowInfo.ownerUid;
+    mWindow->setOwnerInfo(/*pid=*/-1, gui::Uid::INVALID);
     changeAndVerifyTouchModeInMainDisplayOnly(!InputDispatcher::kDefaultInTouchMode, ownerPid,
                                               ownerUid, /*hasPermission=*/true);
 }
@@ -9081,10 +9129,10 @@
  */
 TEST_F(InputDispatcherSpyWindowTest, WatchOutsideTouches) {
     auto window = createForeground();
-    window->setOwnerInfo(12, 34);
+    window->setOwnerInfo(12, gui::Uid{34});
     auto spy = createSpy();
     spy->setWatchOutsideTouch(true);
-    spy->setOwnerInfo(56, 78);
+    spy->setOwnerInfo(56, gui::Uid{78});
     spy->setFrame(Rect{0, 0, 20, 20});
     mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {spy, window}}});
 
@@ -9497,7 +9545,7 @@
                 sp<FakeWindowHandle>::make(overlayApplication, mDispatcher,
                                            "Stylus interceptor window", ADISPLAY_ID_DEFAULT);
         overlay->setFocusable(false);
-        overlay->setOwnerInfo(111, 111);
+        overlay->setOwnerInfo(111, gui::Uid{111});
         overlay->setTouchable(false);
         overlay->setInterceptsStylus(true);
         overlay->setTrustedOverlay(true);
@@ -9508,7 +9556,7 @@
                 sp<FakeWindowHandle>::make(application, mDispatcher, "Application window",
                                            ADISPLAY_ID_DEFAULT);
         window->setFocusable(true);
-        window->setOwnerInfo(222, 222);
+        window->setOwnerInfo(222, gui::Uid{222});
 
         mDispatcher->setFocusedApplication(ADISPLAY_ID_DEFAULT, application);
         mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {overlay, window}}});
@@ -9619,11 +9667,11 @@
 
 struct User {
     int32_t mPid;
-    int32_t mUid;
+    gui::Uid mUid;
     uint32_t mPolicyFlags{DEFAULT_POLICY_FLAGS};
     std::unique_ptr<InputDispatcher>& mDispatcher;
 
-    User(std::unique_ptr<InputDispatcher>& dispatcher, int32_t pid, int32_t uid)
+    User(std::unique_ptr<InputDispatcher>& dispatcher, int32_t pid, gui::Uid uid)
           : mPid(pid), mUid(uid), mDispatcher(dispatcher) {}
 
     InputEventInjectionResult injectTargetedMotion(int32_t action) const {
@@ -9656,7 +9704,7 @@
 using InputDispatcherTargetedInjectionTest = InputDispatcherTest;
 
 TEST_F(InputDispatcherTargetedInjectionTest, CanInjectIntoOwnedWindow) {
-    auto owner = User(mDispatcher, 10, 11);
+    auto owner = User(mDispatcher, 10, gui::Uid{11});
     auto window = owner.createWindow();
     mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {window}}});
 
@@ -9673,11 +9721,11 @@
 }
 
 TEST_F(InputDispatcherTargetedInjectionTest, CannotInjectIntoUnownedWindow) {
-    auto owner = User(mDispatcher, 10, 11);
+    auto owner = User(mDispatcher, 10, gui::Uid{11});
     auto window = owner.createWindow();
     mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {window}}});
 
-    auto rando = User(mDispatcher, 20, 21);
+    auto rando = User(mDispatcher, 20, gui::Uid{21});
     EXPECT_EQ(InputEventInjectionResult::TARGET_MISMATCH,
               rando.injectTargetedMotion(AMOTION_EVENT_ACTION_DOWN));
 
@@ -9690,7 +9738,7 @@
 }
 
 TEST_F(InputDispatcherTargetedInjectionTest, CanInjectIntoOwnedSpyWindow) {
-    auto owner = User(mDispatcher, 10, 11);
+    auto owner = User(mDispatcher, 10, gui::Uid{11});
     auto window = owner.createWindow();
     auto spy = owner.createWindow();
     spy->setSpy(true);
@@ -9704,10 +9752,10 @@
 }
 
 TEST_F(InputDispatcherTargetedInjectionTest, CannotInjectIntoUnownedSpyWindow) {
-    auto owner = User(mDispatcher, 10, 11);
+    auto owner = User(mDispatcher, 10, gui::Uid{11});
     auto window = owner.createWindow();
 
-    auto rando = User(mDispatcher, 20, 21);
+    auto rando = User(mDispatcher, 20, gui::Uid{21});
     auto randosSpy = rando.createWindow();
     randosSpy->setSpy(true);
     randosSpy->setTrustedOverlay(true);
@@ -9722,10 +9770,10 @@
 }
 
 TEST_F(InputDispatcherTargetedInjectionTest, CanInjectIntoAnyWindowWhenNotTargeting) {
-    auto owner = User(mDispatcher, 10, 11);
+    auto owner = User(mDispatcher, 10, gui::Uid{11});
     auto window = owner.createWindow();
 
-    auto rando = User(mDispatcher, 20, 21);
+    auto rando = User(mDispatcher, 20, gui::Uid{21});
     auto randosSpy = rando.createWindow();
     randosSpy->setSpy(true);
     randosSpy->setTrustedOverlay(true);
@@ -9746,21 +9794,21 @@
     window->assertNoEvents();
 }
 
-TEST_F(InputDispatcherTargetedInjectionTest, CanGenerateActionOutsideToOtherUids) {
-    auto owner = User(mDispatcher, 10, 11);
+TEST_F(InputDispatcherTargetedInjectionTest, CannotGenerateActionOutsideToOtherUids) {
+    auto owner = User(mDispatcher, 10, gui::Uid{11});
     auto window = owner.createWindow();
 
-    auto rando = User(mDispatcher, 20, 21);
+    auto rando = User(mDispatcher, 20, gui::Uid{21});
     auto randosWindow = rando.createWindow();
     randosWindow->setFrame(Rect{-10, -10, -5, -5});
     randosWindow->setWatchOutsideTouch(true);
     mDispatcher->setInputWindows({{ADISPLAY_ID_DEFAULT, {randosWindow, window}}});
 
-    // We allow generation of ACTION_OUTSIDE events into windows owned by different uids.
+    // Do not allow generation of ACTION_OUTSIDE events into windows owned by different uids.
     EXPECT_EQ(InputEventInjectionResult::SUCCEEDED,
               owner.injectTargetedMotion(AMOTION_EVENT_ACTION_DOWN));
     window->consumeMotionDown();
-    randosWindow->consumeMotionOutside();
+    randosWindow->assertNoEvents();
 }
 
 } // namespace android::inputdispatcher
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 5141acb..d1c3f7d 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -1534,8 +1534,8 @@
         NotifyMotionArgs args;
         ASSERT_NO_FATAL_FAILURE(mTestListener->assertNotifyMotionWasCalled(&args));
         EXPECT_EQ(action, args.action);
-        ASSERT_EQ(points.size(), args.pointerCount);
-        for (size_t i = 0; i < args.pointerCount; i++) {
+        ASSERT_EQ(points.size(), args.getPointerCount());
+        for (size_t i = 0; i < args.getPointerCount(); i++) {
             EXPECT_EQ(points[i].x, args.pointerCoords[i].getX());
             EXPECT_EQ(points[i].y, args.pointerCoords[i].getY());
         }
@@ -3949,7 +3949,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, args.metaState);
     ASSERT_EQ(AMOTION_EVENT_BUTTON_PRIMARY, args.buttonState);
     ASSERT_EQ(0, args.edgeFlags);
-    ASSERT_EQ(uint32_t(1), args.pointerCount);
+    ASSERT_EQ(uint32_t(1), args.getPointerCount());
     ASSERT_EQ(0, args.pointerProperties[0].id);
     ASSERT_EQ(ToolType::MOUSE, args.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertCursorPointerCoords(args.pointerCoords[0], 0.0f, 0.0f, 1.0f));
@@ -3967,7 +3967,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, args.metaState);
     ASSERT_EQ(AMOTION_EVENT_BUTTON_PRIMARY, args.buttonState);
     ASSERT_EQ(0, args.edgeFlags);
-    ASSERT_EQ(uint32_t(1), args.pointerCount);
+    ASSERT_EQ(uint32_t(1), args.getPointerCount());
     ASSERT_EQ(0, args.pointerProperties[0].id);
     ASSERT_EQ(ToolType::MOUSE, args.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertCursorPointerCoords(args.pointerCoords[0], 0.0f, 0.0f, 1.0f));
@@ -3988,7 +3988,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, args.metaState);
     ASSERT_EQ(0, args.buttonState);
     ASSERT_EQ(0, args.edgeFlags);
-    ASSERT_EQ(uint32_t(1), args.pointerCount);
+    ASSERT_EQ(uint32_t(1), args.getPointerCount());
     ASSERT_EQ(0, args.pointerProperties[0].id);
     ASSERT_EQ(ToolType::MOUSE, args.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertCursorPointerCoords(args.pointerCoords[0], 0.0f, 0.0f, 0.0f));
@@ -4006,7 +4006,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, args.metaState);
     ASSERT_EQ(0, args.buttonState);
     ASSERT_EQ(0, args.edgeFlags);
-    ASSERT_EQ(uint32_t(1), args.pointerCount);
+    ASSERT_EQ(uint32_t(1), args.getPointerCount());
     ASSERT_EQ(0, args.pointerProperties[0].id);
     ASSERT_EQ(ToolType::MOUSE, args.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertCursorPointerCoords(args.pointerCoords[0], 0.0f, 0.0f, 0.0f));
@@ -5269,7 +5269,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5293,7 +5293,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5316,7 +5316,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5366,7 +5366,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5389,7 +5389,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5434,7 +5434,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5461,7 +5461,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5486,7 +5486,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5529,7 +5529,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5554,7 +5554,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -5577,7 +5577,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -6932,7 +6932,7 @@
         NotifyMotionArgs motionArgs;
         ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
         ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-        ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+        ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
         ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0], point.x, point.y,
                                                     1, 0, 0, 0, 0, 0, 0, 0));
     }
@@ -7004,7 +7004,7 @@
         processSync(mapper);
         ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
         ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
-        ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+        ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
         ASSERT_NO_FATAL_FAILURE(
                 assertPointerCoords(motionArgs.pointerCoords[0], 11, 21, 1, 0, 0, 0, 0, 0, 0, 0));
 
@@ -7792,7 +7792,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -7811,7 +7811,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -7842,7 +7842,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -7871,7 +7871,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -7894,7 +7894,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(1, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -7919,7 +7919,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(1, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -7946,7 +7946,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -7975,7 +7975,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -7998,7 +7998,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8021,7 +8021,7 @@
     ASSERT_EQ(AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_ON, motionArgs.metaState);
     ASSERT_EQ(0, motionArgs.buttonState);
     ASSERT_EQ(0, motionArgs.edgeFlags);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8109,7 +8109,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8117,7 +8117,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_1_DOWN, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8139,7 +8139,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8158,7 +8158,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_0_UP, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8170,7 +8170,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(1, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8185,7 +8185,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(1, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8203,7 +8203,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_0_DOWN, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8222,7 +8222,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_1_UP, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8234,7 +8234,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8246,7 +8246,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_UP, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8279,7 +8279,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8287,7 +8287,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_1_DOWN, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8307,7 +8307,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8327,7 +8327,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_0_UP, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8339,7 +8339,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(1, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8352,7 +8352,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(1, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8368,7 +8368,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_0_DOWN, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8388,7 +8388,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_1_UP, motionArgs.action);
-    ASSERT_EQ(size_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(2), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(1, motionArgs.pointerProperties[1].id);
@@ -8400,7 +8400,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8412,7 +8412,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_UP, motionArgs.action);
-    ASSERT_EQ(size_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(size_t(1), motionArgs.getPointerCount());
     ASSERT_EQ(0, motionArgs.pointerProperties[0].id);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(motionArgs.pointerCoords[0],
@@ -8553,7 +8553,7 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
     ASSERT_EQ(ACTION_POINTER_1_DOWN, args.action);
-    ASSERT_EQ(size_t(2), args.pointerCount);
+    ASSERT_EQ(size_t(2), args.getPointerCount());
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(args.pointerCoords[0],
             x, y, 1.0f, size, touch, touch, tool, tool, 0, 0));
     ASSERT_NO_FATAL_FAILURE(assertPointerCoords(args.pointerCoords[1],
@@ -9812,7 +9812,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // First finger up. It used to be in palm mode, and we already generated ACTION_POINTER_UP for
     // it. Second finger receive move.
@@ -9821,7 +9821,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // Second finger keeps moving.
     processSlot(mapper, SECOND_SLOT);
@@ -9830,7 +9830,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // Second finger up.
     processId(mapper, INVALID_TRACKING_ID);
@@ -9904,7 +9904,7 @@
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // third finger move
     processId(mapper, THIRD_TRACKING_ID);
@@ -9919,7 +9919,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // second finger up, third finger receive move.
     processSlot(mapper, SECOND_SLOT);
@@ -9927,7 +9927,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // third finger up.
     processSlot(mapper, THIRD_SLOT);
@@ -9984,7 +9984,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // second finger up.
     processSlot(mapper, SECOND_SLOT);
@@ -10030,7 +10030,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // First finger move.
     processId(mapper, FIRST_TRACKING_ID);
@@ -10039,7 +10039,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 
     // Second finger down.
     processSlot(mapper, SECOND_SLOT);
@@ -10049,7 +10049,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_1_DOWN, motionArgs.action);
-    ASSERT_EQ(uint32_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(2), motionArgs.getPointerCount());
 
     // second finger up with some unexpected data.
     processSlot(mapper, SECOND_SLOT);
@@ -10058,7 +10058,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ACTION_POINTER_1_UP, motionArgs.action);
-    ASSERT_EQ(uint32_t(2), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(2), motionArgs.getPointerCount());
 
     // first finger up with some unexpected data.
     processSlot(mapper, FIRST_SLOT);
@@ -10068,7 +10068,7 @@
     processSync(mapper);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(AMOTION_EVENT_ACTION_UP, motionArgs.action);
-    ASSERT_EQ(uint32_t(1), motionArgs.pointerCount);
+    ASSERT_EQ(uint32_t(1), motionArgs.getPointerCount());
 }
 
 TEST_F(MultiTouchInputMapperTest, Reset_PreservesLastTouchState) {
@@ -10323,7 +10323,7 @@
     NotifyMotionArgs args;
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, args.action);
-    ASSERT_EQ(1U, args.pointerCount);
+    ASSERT_EQ(1U, args.getPointerCount());
     ASSERT_EQ(0, args.pointerProperties[0].id);
     ASSERT_EQ(AINPUT_SOURCE_TOUCHPAD, args.source);
     ASSERT_NO_FATAL_FAILURE(
@@ -10338,7 +10338,7 @@
     // expect coord[0] to contain previous location, coord[1] to contain new touch 1 location
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
     ASSERT_EQ(ACTION_POINTER_1_DOWN, args.action);
-    ASSERT_EQ(2U, args.pointerCount);
+    ASSERT_EQ(2U, args.getPointerCount());
     ASSERT_EQ(0, args.pointerProperties[0].id);
     ASSERT_EQ(1, args.pointerProperties[1].id);
     ASSERT_NO_FATAL_FAILURE(
@@ -10406,7 +10406,7 @@
     // expect coord[0] to contain new location of touch 1, and properties[0].id to contain 1
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&args));
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, args.action);
-    ASSERT_EQ(1U, args.pointerCount);
+    ASSERT_EQ(1U, args.getPointerCount());
     ASSERT_EQ(1, args.pointerProperties[0].id);
     ASSERT_NO_FATAL_FAILURE(
             assertPointerCoords(args.pointerCoords[0], 320, 900, 1, 0, 0, 0, 0, 0, 0, 0));
@@ -10626,7 +10626,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
@@ -10648,7 +10648,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::TWO_FINGER_SWIPE, motionArgs.classification);
@@ -10686,7 +10686,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
@@ -10708,7 +10708,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::TWO_FINGER_SWIPE, motionArgs.classification);
@@ -10742,7 +10742,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
@@ -10767,16 +10767,16 @@
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     // The previous PRESS gesture is cancelled, because it is transformed to freeform
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_CANCEL, motionArgs.action);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
-    ASSERT_EQ(2U, motionArgs.pointerCount);
+    ASSERT_EQ(2U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_POINTER_DOWN, motionArgs.action & AMOTION_EVENT_ACTION_MASK);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
@@ -10806,7 +10806,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(2U, motionArgs.pointerCount);
+    ASSERT_EQ(2U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
     ASSERT_EQ(ToolType::FINGER, motionArgs.pointerProperties[0].toolType);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
@@ -10835,7 +10835,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_DOWN, motionArgs.action);
     ASSERT_EQ(MotionClassification::NONE, motionArgs.classification);
     ASSERT_EQ(0, motionArgs.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_GESTURE_X_OFFSET));
@@ -10857,7 +10857,7 @@
     processSync(mapper);
 
     ASSERT_NO_FATAL_FAILURE(mFakeListener->assertNotifyMotionWasCalled(&motionArgs));
-    ASSERT_EQ(1U, motionArgs.pointerCount);
+    ASSERT_EQ(1U, motionArgs.getPointerCount());
     ASSERT_EQ(AMOTION_EVENT_ACTION_MOVE, motionArgs.action);
     ASSERT_EQ(MotionClassification::TWO_FINGER_SWIPE, motionArgs.classification);
     ASSERT_LT(motionArgs.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_GESTURE_X_OFFSET), 0);
@@ -11104,6 +11104,101 @@
     ASSERT_EQ(controller.getLightColor(lights[0].id).value_or(-1), LIGHT_BRIGHTNESS);
 }
 
+TEST_F(LightControllerTest, Ignore_MonoLight_WithPreferredBacklightLevels) {
+    RawLightInfo infoMono = {.id = 1,
+                             .name = "mono_light",
+                             .maxBrightness = 255,
+                             .flags = InputLightClass::BRIGHTNESS,
+                             .path = ""};
+    mFakeEventHub->addRawLightInfo(infoMono.id, std::move(infoMono));
+    mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, "keyboard.backlight.brightnessLevels",
+                                            "0,100,200");
+
+    PeripheralController& controller = addControllerAndConfigure<PeripheralController>();
+    std::list<NotifyArgs> unused =
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
+
+    InputDeviceInfo info;
+    controller.populateDeviceInfo(&info);
+    std::vector<InputDeviceLightInfo> lights = info.getLights();
+    ASSERT_EQ(1U, lights.size());
+    ASSERT_EQ(0U, lights[0].preferredBrightnessLevels.size());
+}
+
+TEST_F(LightControllerTest, KeyboardBacklight_WithNoPreferredBacklightLevels) {
+    RawLightInfo infoMono = {.id = 1,
+                             .name = "mono_keyboard_backlight",
+                             .maxBrightness = 255,
+                             .flags = InputLightClass::BRIGHTNESS |
+                                     InputLightClass::KEYBOARD_BACKLIGHT,
+                             .path = ""};
+    mFakeEventHub->addRawLightInfo(infoMono.id, std::move(infoMono));
+
+    PeripheralController& controller = addControllerAndConfigure<PeripheralController>();
+    std::list<NotifyArgs> unused =
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
+
+    InputDeviceInfo info;
+    controller.populateDeviceInfo(&info);
+    std::vector<InputDeviceLightInfo> lights = info.getLights();
+    ASSERT_EQ(1U, lights.size());
+    ASSERT_EQ(0U, lights[0].preferredBrightnessLevels.size());
+}
+
+TEST_F(LightControllerTest, KeyboardBacklight_WithPreferredBacklightLevels) {
+    RawLightInfo infoMono = {.id = 1,
+                             .name = "mono_keyboard_backlight",
+                             .maxBrightness = 255,
+                             .flags = InputLightClass::BRIGHTNESS |
+                                     InputLightClass::KEYBOARD_BACKLIGHT,
+                             .path = ""};
+    mFakeEventHub->addRawLightInfo(infoMono.id, std::move(infoMono));
+    mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, "keyboard.backlight.brightnessLevels",
+                                            "0,100,200");
+
+    PeripheralController& controller = addControllerAndConfigure<PeripheralController>();
+    std::list<NotifyArgs> unused =
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
+
+    InputDeviceInfo info;
+    controller.populateDeviceInfo(&info);
+    std::vector<InputDeviceLightInfo> lights = info.getLights();
+    ASSERT_EQ(1U, lights.size());
+    ASSERT_EQ(3U, lights[0].preferredBrightnessLevels.size());
+    std::set<BrightnessLevel>::iterator it = lights[0].preferredBrightnessLevels.begin();
+    ASSERT_EQ(BrightnessLevel(0), *it);
+    std::advance(it, 1);
+    ASSERT_EQ(BrightnessLevel(100), *it);
+    std::advance(it, 1);
+    ASSERT_EQ(BrightnessLevel(200), *it);
+}
+
+TEST_F(LightControllerTest, KeyboardBacklight_WithWrongPreferredBacklightLevels) {
+    RawLightInfo infoMono = {.id = 1,
+                             .name = "mono_keyboard_backlight",
+                             .maxBrightness = 255,
+                             .flags = InputLightClass::BRIGHTNESS |
+                                     InputLightClass::KEYBOARD_BACKLIGHT,
+                             .path = ""};
+    mFakeEventHub->addRawLightInfo(infoMono.id, std::move(infoMono));
+    mFakeEventHub->addConfigurationProperty(EVENTHUB_ID, "keyboard.backlight.brightnessLevels",
+                                            "0,100,200,300,400,500");
+
+    PeripheralController& controller = addControllerAndConfigure<PeripheralController>();
+    std::list<NotifyArgs> unused =
+            mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                               /*changes=*/{});
+
+    InputDeviceInfo info;
+    controller.populateDeviceInfo(&info);
+    std::vector<InputDeviceLightInfo> lights = info.getLights();
+    ASSERT_EQ(1U, lights.size());
+    ASSERT_EQ(0U, lights[0].preferredBrightnessLevels.size());
+}
+
 TEST_F(LightControllerTest, RGBLight) {
     RawLightInfo infoRed = {.id = 1,
                             .name = "red",
diff --git a/services/inputflinger/tests/SyncQueue_test.cpp b/services/inputflinger/tests/SyncQueue_test.cpp
new file mode 100644
index 0000000..af2f961
--- /dev/null
+++ b/services/inputflinger/tests/SyncQueue_test.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2023 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 "../SyncQueue.h"
+
+#include <gtest/gtest.h>
+#include <thread>
+
+namespace android {
+
+// --- SyncQueueTest ---
+
+// Validate basic pop and push operation.
+TEST(SyncQueueTest, AddAndRemove) {
+    SyncQueue<int> queue;
+
+    queue.push(1);
+    ASSERT_EQ(queue.pop(), 1);
+
+    queue.push(3);
+    ASSERT_EQ(queue.pop(), 3);
+
+    ASSERT_EQ(std::nullopt, queue.pop());
+}
+
+// Make sure the queue maintains FIFO order.
+// Add elements and remove them, and check the order.
+TEST(SyncQueueTest, isFIFO) {
+    SyncQueue<int> queue;
+
+    constexpr int numItems = 10;
+    for (int i = 0; i < numItems; i++) {
+        queue.push(static_cast<int>(i));
+    }
+    for (int i = 0; i < numItems; i++) {
+        ASSERT_EQ(queue.pop(), static_cast<int>(i));
+    }
+}
+
+TEST(SyncQueueTest, AllowsMultipleThreads) {
+    SyncQueue<int> queue;
+
+    // Test with a large number of items to increase likelihood that threads overlap
+    constexpr int numItems = 100;
+
+    // Fill queue from a different thread
+    std::thread fillQueue([&queue]() {
+        for (int i = 0; i < numItems; i++) {
+            queue.push(static_cast<int>(i));
+        }
+    });
+
+    // Make sure all elements are received in correct order
+    for (int i = 0; i < numItems; i++) {
+        // Since popping races with the thread that's filling the queue,
+        // keep popping until we get something back
+        std::optional<int> popped;
+        do {
+            popped = queue.pop();
+        } while (!popped);
+        ASSERT_EQ(popped, static_cast<int>(i));
+    }
+
+    fillQueue.join();
+}
+
+} // namespace android
diff --git a/services/inputflinger/tests/TestInputListenerMatchers.h b/services/inputflinger/tests/TestInputListenerMatchers.h
index db6f254..70bad7c 100644
--- a/services/inputflinger/tests/TestInputListenerMatchers.h
+++ b/services/inputflinger/tests/TestInputListenerMatchers.h
@@ -23,6 +23,8 @@
 #include <gtest/gtest.h>
 #include <input/Input.h>
 
+#include "TestConstants.h"
+
 namespace android {
 
 MATCHER_P(WithMotionAction, action, "MotionEvent with specified action") {
@@ -69,8 +71,8 @@
 }
 
 MATCHER_P(WithPointerCount, count, "MotionEvent with specified number of pointers") {
-    *result_listener << "expected " << count << " pointer(s), but got " << arg.pointerCount;
-    return arg.pointerCount == count;
+    *result_listener << "expected " << count << " pointer(s), but got " << arg.getPointerCount();
+    return arg.getPointerCount() == count;
 }
 
 MATCHER_P2(WithPointerId, index, id, "MotionEvent with specified pointer ID for pointer index") {
@@ -136,6 +138,15 @@
     return fabs(argScaleFactor - factor) <= epsilon;
 }
 
+MATCHER_P(WithGestureSwipeFingerCount, count,
+          "InputEvent with specified touchpad swipe finger count") {
+    const auto argFingerCount =
+            arg.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_GESTURE_SWIPE_FINGER_COUNT);
+    *result_listener << "expected gesture swipe finger count " << count << " but got "
+                     << argFingerCount;
+    return fabs(argFingerCount - count) <= EPSILON;
+}
+
 MATCHER_P(WithPressure, pressure, "InputEvent with specified pressure") {
     const auto argPressure = arg.pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE);
     *result_listener << "expected pressure " << pressure << ", but got " << argPressure;
diff --git a/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp b/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
index 1fff2c7..da0815f 100644
--- a/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
+++ b/services/inputflinger/tests/UnwantedInteractionBlocker_test.cpp
@@ -138,9 +138,10 @@
 
 static void assertArgs(const NotifyMotionArgs& args, int32_t action,
                        const std::vector<std::pair<int32_t /*pointerId*/, PointerData>>& pointers) {
-    ASSERT_EQ(action, args.action);
-    ASSERT_EQ(pointers.size(), args.pointerCount);
-    for (size_t i = 0; i < args.pointerCount; i++) {
+    ASSERT_EQ(action, args.action)
+            << "Expected " << MotionEvent::actionToString(action) << " but got " << args.action;
+    ASSERT_EQ(pointers.size(), args.getPointerCount());
+    for (size_t i = 0; i < args.getPointerCount(); i++) {
         const auto& [pointerId, pointerData] = pointers[i];
         ASSERT_EQ(pointerId, args.pointerProperties[i].id);
         ASSERT_EQ(pointerData.x, args.pointerCoords[i].getX());
@@ -196,7 +197,7 @@
                                                AMOTION_EVENT_ACTION_MOVE, {{1, 2, 3}, {4, 5, 6}});
 
     NotifyMotionArgs noPointers = removePointerIds(args, {0, 1});
-    ASSERT_EQ(0u, noPointers.pointerCount);
+    ASSERT_EQ(0u, noPointers.getPointerCount());
 }
 
 /**
@@ -771,7 +772,7 @@
     ASSERT_EQ(POINTER_0_UP, argsList[0].action);
     ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
     ASSERT_EQ(MOVE, argsList[1].action);
-    ASSERT_EQ(1u, argsList[1].pointerCount);
+    ASSERT_EQ(1u, argsList[1].getPointerCount());
     ASSERT_EQ(0, argsList[1].flags);
 
     mPalmRejector->processMotion(
@@ -958,7 +959,7 @@
                                {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}}));
     ASSERT_EQ(1u, argsList.size());
     ASSERT_EQ(MOVE, argsList[0].action);
-    ASSERT_EQ(1u, argsList[0].pointerCount);
+    ASSERT_EQ(1u, argsList[0].getPointerCount());
     ASSERT_EQ(1433, argsList[0].pointerCoords[0].getX());
     ASSERT_EQ(751, argsList[0].pointerCoords[0].getY());
 }
@@ -986,7 +987,7 @@
     ASSERT_EQ(1u, argsList.size());
     // Cancel all
     ASSERT_EQ(CANCEL, argsList[0].action);
-    ASSERT_EQ(2u, argsList[0].pointerCount);
+    ASSERT_EQ(2u, argsList[0].getPointerCount());
     ASSERT_EQ(FLAG_CANCELED, argsList[0].flags);
 
     // Future move events are ignored
@@ -1001,7 +1002,7 @@
                                {{1433.0, 751.0, 43.0}, {1072.0, 766.0, 13.0}, {1000, 700, 10}}));
     ASSERT_EQ(1u, argsList.size());
     ASSERT_EQ(DOWN, argsList[0].action);
-    ASSERT_EQ(1u, argsList[0].pointerCount);
+    ASSERT_EQ(1u, argsList[0].getPointerCount());
     ASSERT_EQ(2, argsList[0].pointerProperties[0].id);
 }
 
diff --git a/services/inputflinger/tests/fuzzers/Android.bp b/services/inputflinger/tests/fuzzers/Android.bp
index 55c2db6..47b0824 100644
--- a/services/inputflinger/tests/fuzzers/Android.bp
+++ b/services/inputflinger/tests/fuzzers/Android.bp
@@ -21,52 +21,35 @@
     default_applicable_licenses: ["frameworks_native_license"],
 }
 
-cc_fuzz {
-    name: "inputflinger_latencytracker_fuzzer",
-    defaults: [
-        "inputflinger_defaults",
-    ],
-    include_dirs: [
-        "frameworks/native/services/inputflinger",
-    ],
-    shared_libs: [
-        "libbase",
-        "libbinder",
-        "liblog",
-        "libutils",
-        "libinput",
-        "libinputflinger",
-    ],
-    srcs: [
-        "LatencyTrackerFuzzer.cpp",
-    ],
-    fuzz_config: {
-        cc: ["android-framework-input@google.com"],
-    },
-}
-
 cc_defaults {
     name: "inputflinger_fuzz_defaults",
     defaults: [
         "inputflinger_defaults",
+        "libinputflinger_defaults",
     ],
+    host_supported: true,
     include_dirs: [
         "frameworks/native/services/inputflinger",
     ],
     shared_libs: [
-        "android.hardware.input.classifier@1.0",
-        "android.hardware.input.processor-V1-ndk",
-        "libbase",
-        "libbinder",
-        "libcutils",
-        "liblog",
-        "libutils",
-        "libinput",
-        "libinputflinger",
         "libinputreader",
         "libinputflinger_base",
-        "libstatslog",
     ],
+    sanitize: {
+        hwaddress: true,
+        undefined: true,
+        all_undefined: true,
+        diag: {
+            undefined: true,
+        },
+    },
+    target: {
+        host: {
+            sanitize: {
+                address: true,
+            },
+        },
+    },
     header_libs: [
         "libbatteryservice_headers",
         "libinputreader_headers",
@@ -145,3 +128,17 @@
         "InputClassifierFuzzer.cpp",
     ],
 }
+
+cc_fuzz {
+    name: "inputflinger_latencytracker_fuzzer",
+    defaults: [
+        "inputflinger_fuzz_defaults",
+        "libinputdispatcher_defaults",
+    ],
+    shared_libs: [
+        "libinputreporter",
+    ],
+    srcs: [
+        "LatencyTrackerFuzzer.cpp",
+    ],
+}
diff --git a/services/inputflinger/tests/fuzzers/BlockingQueueFuzzer.cpp b/services/inputflinger/tests/fuzzers/BlockingQueueFuzzer.cpp
index d2595bf..e9016bb 100644
--- a/services/inputflinger/tests/fuzzers/BlockingQueueFuzzer.cpp
+++ b/services/inputflinger/tests/fuzzers/BlockingQueueFuzzer.cpp
@@ -47,12 +47,21 @@
                     filled > numPops ? filled -= numPops : filled = 0;
                 },
                 [&]() -> void {
+                    // Pops blocks if it is empty, so only pop up to num elements inserted.
+                    size_t numPops = fdp.ConsumeIntegralInRange<size_t>(0, filled);
+                    for (size_t i = 0; i < numPops; i++) {
+                        queue.popWithTimeout(
+                                std::chrono::nanoseconds{fdp.ConsumeIntegral<int64_t>()});
+                    }
+                    filled > numPops ? filled -= numPops : filled = 0;
+                },
+                [&]() -> void {
                     queue.clear();
                     filled = 0;
                 },
                 [&]() -> void {
                     int32_t eraseElement = fdp.ConsumeIntegral<int32_t>();
-                    queue.erase([&](int32_t element) {
+                    queue.erase_if([&](int32_t element) {
                         if (element == eraseElement) {
                             filled--;
                             return true;
diff --git a/services/surfaceflinger/Display/PhysicalDisplay.h b/services/surfaceflinger/Display/PhysicalDisplay.h
index cba1014..ef36234 100644
--- a/services/surfaceflinger/Display/PhysicalDisplay.h
+++ b/services/surfaceflinger/Display/PhysicalDisplay.h
@@ -21,9 +21,9 @@
 
 #include <binder/IBinder.h>
 #include <ui/DisplayId.h>
+#include <ui/DisplayMap.h>
 #include <utils/StrongPointer.h>
 
-#include "DisplayMap.h"
 #include "DisplaySnapshot.h"
 
 namespace android::display {
@@ -66,7 +66,7 @@
     DisplaySnapshot mSnapshot;
 };
 
-using PhysicalDisplays = PhysicalDisplayMap<PhysicalDisplayId, PhysicalDisplay>;
+using PhysicalDisplays = ui::PhysicalDisplayMap<PhysicalDisplayId, PhysicalDisplay>;
 
 // Combinator for ftl::Optional<PhysicalDisplayId>::and_then.
 constexpr auto getPhysicalDisplay(const PhysicalDisplays& displays) {
diff --git a/services/surfaceflinger/DisplayHardware/AidlComposerHal.h b/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
index ce05b38..ded91be 100644
--- a/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
@@ -17,8 +17,9 @@
 #pragma once
 
 #include "ComposerHal.h"
+
 #include <ftl/shared_mutex.h>
-#include <ftl/small_map.h>
+#include <ui/DisplayMap.h>
 
 #include <functional>
 #include <optional>
@@ -272,9 +273,9 @@
     // Invalid displayId used as a key to mReaders when mSingleReader is true.
     static constexpr int64_t kSingleReaderKey = 0;
 
-    // TODO (b/256881188): Use display::PhysicalDisplayMap instead of hard-coded `3`
-    ftl::SmallMap<Display, ComposerClientWriter, 3> mWriters GUARDED_BY(mMutex);
-    ftl::SmallMap<Display, ComposerClientReader, 3> mReaders GUARDED_BY(mMutex);
+    ui::PhysicalDisplayMap<Display, ComposerClientWriter> mWriters GUARDED_BY(mMutex);
+    ui::PhysicalDisplayMap<Display, ComposerClientReader> mReaders GUARDED_BY(mMutex);
+
     // Protect access to mWriters and mReaders with a shared_mutex. Adding and
     // removing a display require exclusive access, since the iterator or the
     // writer/reader may be invalidated. Other calls need shared access while
diff --git a/services/surfaceflinger/FrontEnd/DisplayInfo.h b/services/surfaceflinger/FrontEnd/DisplayInfo.h
index 218a64a..6502f36 100644
--- a/services/surfaceflinger/FrontEnd/DisplayInfo.h
+++ b/services/surfaceflinger/FrontEnd/DisplayInfo.h
@@ -19,6 +19,9 @@
 #include <sstream>
 
 #include <gui/DisplayInfo.h>
+#include <ui/DisplayMap.h>
+#include <ui/LayerStack.h>
+#include <ui/Transform.h>
 
 namespace android::surfaceflinger::frontend {
 
@@ -44,4 +47,6 @@
     }
 };
 
+using DisplayInfos = ui::DisplayMap<ui::LayerStack, DisplayInfo>;
+
 } // namespace android::surfaceflinger::frontend
diff --git a/services/surfaceflinger/FrontEnd/LayerLifecycleManager.cpp b/services/surfaceflinger/FrontEnd/LayerLifecycleManager.cpp
index cd9515c..c9eb9c4 100644
--- a/services/surfaceflinger/FrontEnd/LayerLifecycleManager.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerLifecycleManager.cpp
@@ -28,6 +28,14 @@
 
 using namespace ftl::flag_operators;
 
+namespace {
+// Returns true if the layer is root of a display and can be mirrored by mirroringLayer
+bool canMirrorRootLayer(RequestedLayerState& mirroringLayer, RequestedLayerState& rootLayer) {
+    return rootLayer.isRoot() && rootLayer.layerStack == mirroringLayer.layerStackToMirror &&
+            rootLayer.id != mirroringLayer.id;
+}
+} // namespace
+
 void LayerLifecycleManager::addLayers(std::vector<std::unique_ptr<RequestedLayerState>> newLayers) {
     if (newLayers.empty()) {
         return;
@@ -46,11 +54,15 @@
         layer.parentId = linkLayer(layer.parentId, layer.id);
         layer.relativeParentId = linkLayer(layer.relativeParentId, layer.id);
         if (layer.layerStackToMirror != ui::INVALID_LAYER_STACK) {
+            // Set mirror layer's default layer stack to -1 so it doesn't end up rendered on a
+            // display accidentally.
+            layer.layerStack = ui::INVALID_LAYER_STACK;
+
             // if this layer is mirroring a display, then walk though all the existing root layers
             // for the layer stack and add them as children to be mirrored.
             mDisplayMirroringLayers.emplace_back(layer.id);
             for (auto& rootLayer : mLayers) {
-                if (rootLayer->isRoot() && rootLayer->layerStack == layer.layerStackToMirror) {
+                if (canMirrorRootLayer(layer, *rootLayer)) {
                     layer.mirrorIds.emplace_back(rootLayer->id);
                     linkLayer(rootLayer->id, layer.id);
                 }
@@ -383,10 +395,9 @@
 // and updates its list of layers that its mirroring. This function should be called when a new
 // root layer is added, removed or moved to another display.
 void LayerLifecycleManager::updateDisplayMirrorLayers(RequestedLayerState& rootLayer) {
-    for (uint32_t mirrorLayerId : mDisplayMirroringLayers) {
-        RequestedLayerState* mirrorLayer = getLayerFromId(mirrorLayerId);
-        bool canBeMirrored =
-                rootLayer.isRoot() && rootLayer.layerStack == mirrorLayer->layerStackToMirror;
+    for (uint32_t mirroringLayerId : mDisplayMirroringLayers) {
+        RequestedLayerState* mirrorLayer = getLayerFromId(mirroringLayerId);
+        bool canBeMirrored = canMirrorRootLayer(*mirrorLayer, rootLayer);
         bool currentlyMirrored =
                 std::find(mirrorLayer->mirrorIds.begin(), mirrorLayer->mirrorIds.end(),
                           rootLayer.id) != mirrorLayer->mirrorIds.end();
diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshot.cpp b/services/surfaceflinger/FrontEnd/LayerSnapshot.cpp
index a992584..f469a1f 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshot.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshot.cpp
@@ -46,7 +46,7 @@
     premultipliedAlpha = state.premultipliedAlpha;
     inputInfo.name = state.name;
     inputInfo.id = static_cast<int32_t>(uniqueSequence);
-    inputInfo.ownerUid = static_cast<int32_t>(state.ownerUid);
+    inputInfo.ownerUid = gui::Uid{state.ownerUid};
     inputInfo.ownerPid = state.ownerPid;
     uid = state.ownerUid;
     pid = state.ownerPid;
diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
index 985c6f9..806b502 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.cpp
@@ -19,28 +19,27 @@
 #undef LOG_TAG
 #define LOG_TAG "LayerSnapshotBuilder"
 
-#include "LayerSnapshotBuilder.h"
-#include <gui/TraceUtils.h>
-#include <ui/FloatRect.h>
-
 #include <numeric>
 #include <optional>
 
+#include <ftl/small_map.h>
 #include <gui/TraceUtils.h>
+#include <ui/FloatRect.h>
+
 #include "DisplayHardware/HWC2.h"
 #include "DisplayHardware/Hal.h"
 #include "LayerLog.h"
 #include "LayerSnapshotBuilder.h"
 #include "TimeStats/TimeStats.h"
-#include "ftl/small_map.h"
+#include "Tracing/TransactionTracing.h"
 
 namespace android::surfaceflinger::frontend {
 
 using namespace ftl::flag_operators;
 
 namespace {
-FloatRect getMaxDisplayBounds(
-        const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displays) {
+
+FloatRect getMaxDisplayBounds(const DisplayInfos& displays) {
     const ui::Size maxSize = [&displays] {
         if (displays.empty()) return ui::Size{5000, 5000};
 
@@ -437,13 +436,13 @@
         // multiple children.
         LayerHierarchy::ScopedAddToTraversalPath addChildToPath(root, args.root.getLayer()->id,
                                                                 LayerHierarchy::Variant::Attached);
-        updateSnapshotsInHierarchy(args, args.root, root, mRootSnapshot);
+        updateSnapshotsInHierarchy(args, args.root, root, mRootSnapshot, /*depth=*/0);
     } else {
         for (auto& [childHierarchy, variant] : args.root.mChildren) {
             LayerHierarchy::ScopedAddToTraversalPath addChildToPath(root,
                                                                     childHierarchy->getLayer()->id,
                                                                     variant);
-            updateSnapshotsInHierarchy(args, *childHierarchy, root, mRootSnapshot);
+            updateSnapshotsInHierarchy(args, *childHierarchy, root, mRootSnapshot, /*depth=*/0);
         }
     }
 
@@ -496,7 +495,15 @@
 
 const LayerSnapshot& LayerSnapshotBuilder::updateSnapshotsInHierarchy(
         const Args& args, const LayerHierarchy& hierarchy,
-        LayerHierarchy::TraversalPath& traversalPath, const LayerSnapshot& parentSnapshot) {
+        LayerHierarchy::TraversalPath& traversalPath, const LayerSnapshot& parentSnapshot,
+        int depth) {
+    if (depth > 50) {
+        TransactionTraceWriter::getInstance().invoke("layer_builder_stack_overflow_",
+                                                     /*overwrite=*/false);
+        LOG_ALWAYS_FATAL("Cycle detected in LayerSnapshotBuilder. See "
+                         "builder_stack_overflow_transactions.winscope");
+    }
+
     const RequestedLayerState* layer = hierarchy.getLayer();
     LayerSnapshot* snapshot = getSnapshot(traversalPath);
     const bool newSnapshot = snapshot == nullptr;
@@ -519,7 +526,8 @@
                                                                 childHierarchy->getLayer()->id,
                                                                 variant);
         const LayerSnapshot& childSnapshot =
-                updateSnapshotsInHierarchy(args, *childHierarchy, traversalPath, *snapshot);
+                updateSnapshotsInHierarchy(args, *childHierarchy, traversalPath, *snapshot,
+                                           depth + 1);
         updateChildState(*snapshot, childSnapshot, args);
     }
 
@@ -668,8 +676,7 @@
 }
 
 // TODO (b/259407931): Remove.
-uint32_t getPrimaryDisplayRotationFlags(
-        const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displays) {
+uint32_t getPrimaryDisplayRotationFlags(const DisplayInfos& displays) {
     for (auto& [_, display] : displays) {
         if (display.isPrimary) {
             return display.rotationFlags;
@@ -1000,7 +1007,7 @@
         snapshot.inputInfo = {};
         // b/271132344 revisit this and see if we can always use the layers uid/pid
         snapshot.inputInfo.name = requested.name;
-        snapshot.inputInfo.ownerUid = static_cast<int32_t>(requested.ownerUid);
+        snapshot.inputInfo.ownerUid = gui::Uid{requested.ownerUid};
         snapshot.inputInfo.ownerPid = requested.ownerPid;
     }
     snapshot.touchCropId = requested.touchCropId;
diff --git a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.h b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.h
index 148c98e..2e46dc6 100644
--- a/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.h
+++ b/services/surfaceflinger/FrontEnd/LayerSnapshotBuilder.h
@@ -16,7 +16,6 @@
 
 #pragma once
 
-#include "Display/DisplayMap.h"
 #include "FrontEnd/DisplayInfo.h"
 #include "FrontEnd/LayerLifecycleManager.h"
 #include "LayerHierarchy.h"
@@ -45,7 +44,7 @@
         const LayerLifecycleManager& layerLifecycleManager;
         ForceUpdateFlags forceUpdate = ForceUpdateFlags::NONE;
         bool includeMetadata = false;
-        const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displays;
+        const DisplayInfos& displays;
         // Set to true if there were display changes since last update.
         bool displayChanges = false;
         const renderengine::ShadowSettings& globalShadowSettings;
@@ -97,7 +96,7 @@
 
     const LayerSnapshot& updateSnapshotsInHierarchy(const Args&, const LayerHierarchy& hierarchy,
                                                     LayerHierarchy::TraversalPath& traversalPath,
-                                                    const LayerSnapshot& parentSnapshot);
+                                                    const LayerSnapshot& parentSnapshot, int depth);
     void updateSnapshot(LayerSnapshot&, const Args&, const RequestedLayerState&,
                         const LayerSnapshot& parentSnapshot, const LayerHierarchy::TraversalPath&);
     static void updateRelativeState(LayerSnapshot& snapshot, const LayerSnapshot& parentSnapshot,
diff --git a/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp b/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp
index 23bb54c..bde2d05 100644
--- a/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp
+++ b/services/surfaceflinger/FrontEnd/RequestedLayerState.cpp
@@ -131,6 +131,7 @@
     const uint32_t oldFlags = flags;
     const half oldAlpha = color.a;
     const bool hadBuffer = externalTexture != nullptr;
+    uint64_t oldFramenumber = hadBuffer ? bufferData->frameNumber : 0;
     const bool hadSideStream = sidebandStream != nullptr;
     const layer_state_t& clientState = resolvedComposerState.state;
     const bool hadBlur = hasBlur();
@@ -147,12 +148,9 @@
             changes |= RequestedLayerState::Changes::Geometry;
         }
     }
+
     if (clientState.what & layer_state_t::eBufferChanged) {
         externalTexture = resolvedComposerState.externalTexture;
-        barrierProducerId = std::max(bufferData->producerId, barrierProducerId);
-        barrierFrameNumber = std::max(bufferData->frameNumber, barrierFrameNumber);
-        // TODO(b/277265947) log and flush transaction trace when we detect out of order updates
-
         const bool hasBuffer = externalTexture != nullptr;
         if (hasBuffer || hasBuffer != hadBuffer) {
             changes |= RequestedLayerState::Changes::Buffer;
@@ -163,6 +161,28 @@
                     RequestedLayerState::Changes::VisibleRegion |
                     RequestedLayerState::Changes::Visibility | RequestedLayerState::Changes::Input;
         }
+
+        if (hasBuffer) {
+            const bool frameNumberChanged =
+                    bufferData->flags.test(BufferData::BufferDataChange::frameNumberChanged);
+            const uint64_t frameNumber =
+                    frameNumberChanged ? bufferData->frameNumber : oldFramenumber + 1;
+            bufferData->frameNumber = frameNumber;
+
+            if ((barrierProducerId > bufferData->producerId) ||
+                ((barrierProducerId == bufferData->producerId) &&
+                 (barrierFrameNumber > bufferData->frameNumber))) {
+                ALOGE("Out of order buffers detected for %s producedId=%d frameNumber=%" PRIu64
+                      " -> producedId=%d frameNumber=%" PRIu64,
+                      getDebugString().c_str(), bufferData->producerId, bufferData->frameNumber,
+                      bufferData->producerId, frameNumber);
+                TransactionTraceWriter::getInstance().invoke("out_of_order_buffers_",
+                                                             /*overwrite=*/false);
+            }
+
+            barrierProducerId = std::max(bufferData->producerId, barrierProducerId);
+            barrierFrameNumber = std::max(bufferData->frameNumber, barrierFrameNumber);
+        }
     }
 
     if (clientState.what & layer_state_t::eSidebandStreamChanged) {
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index f12aab7..a5d7ce7 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -1349,6 +1349,8 @@
         mDrawingState.bufferSurfaceFrameTX =
                 createSurfaceFrameForBuffer(info, postTime, mTransactionName);
     }
+
+    setFrameTimelineVsyncForSkippedFrames(info, postTime, mTransactionName);
 }
 
 void Layer::setFrameTimelineVsyncForBufferlessTransaction(const FrameTimelineInfo& info,
@@ -1380,11 +1382,13 @@
             it->second = createSurfaceFrameForTransaction(info, postTime);
         }
     }
+
+    setFrameTimelineVsyncForSkippedFrames(info, postTime, mTransactionName);
 }
 
 void Layer::addSurfaceFrameDroppedForBuffer(
-        std::shared_ptr<frametimeline::SurfaceFrame>& surfaceFrame) {
-    surfaceFrame->setDropTime(systemTime());
+        std::shared_ptr<frametimeline::SurfaceFrame>& surfaceFrame, nsecs_t dropTime) {
+    surfaceFrame->setDropTime(dropTime);
     surfaceFrame->setPresentState(PresentState::Dropped);
     mFlinger->mFrameTimeline->addSurfaceFrame(surfaceFrame);
 }
@@ -1434,6 +1438,32 @@
     return surfaceFrame;
 }
 
+void Layer::setFrameTimelineVsyncForSkippedFrames(const FrameTimelineInfo& info, nsecs_t postTime,
+                                                  std::string debugName) {
+    if (info.skippedFrameVsyncId == FrameTimelineInfo::INVALID_VSYNC_ID) {
+        return;
+    }
+
+    FrameTimelineInfo skippedFrameTimelineInfo = info;
+    skippedFrameTimelineInfo.vsyncId = info.skippedFrameVsyncId;
+
+    auto surfaceFrame =
+            mFlinger->mFrameTimeline->createSurfaceFrameForToken(skippedFrameTimelineInfo,
+                                                                 mOwnerPid, mOwnerUid,
+                                                                 getSequence(), mName, debugName,
+                                                                 /*isBuffer*/ false, getGameMode());
+    surfaceFrame->setActualStartTime(skippedFrameTimelineInfo.skippedFrameStartTimeNanos);
+    // For Transactions, the post time is considered to be both queue and acquire fence time.
+    surfaceFrame->setActualQueueTime(postTime);
+    surfaceFrame->setAcquireFenceTime(postTime);
+    const auto fps = mFlinger->mScheduler->getFrameRateOverride(getOwnerUid());
+    if (fps) {
+        surfaceFrame->setRenderRate(*fps);
+    }
+    onSurfaceFrameCreated(surfaceFrame);
+    addSurfaceFrameDroppedForBuffer(surfaceFrame, postTime);
+}
+
 bool Layer::setFrameRateForLayerTreeLegacy(FrameRate frameRate) {
     if (mDrawingState.frameRateForLayerTree == frameRate) {
         return false;
@@ -2422,7 +2452,7 @@
 WindowInfo Layer::fillInputInfo(const InputDisplayArgs& displayArgs) {
     if (!hasInputInfo()) {
         mDrawingState.inputInfo.name = getName();
-        mDrawingState.inputInfo.ownerUid = mOwnerUid;
+        mDrawingState.inputInfo.ownerUid = gui::Uid{mOwnerUid};
         mDrawingState.inputInfo.ownerPid = mOwnerPid;
         mDrawingState.inputInfo.inputConfig |= WindowInfo::InputConfig::NO_INPUT_CHANNEL;
         mDrawingState.inputInfo.displayId = getLayerStack().id;
@@ -3067,7 +3097,7 @@
             decrementPendingBufferCount();
             if (mDrawingState.bufferSurfaceFrameTX != nullptr &&
                 mDrawingState.bufferSurfaceFrameTX->getPresentState() != PresentState::Presented) {
-                addSurfaceFrameDroppedForBuffer(mDrawingState.bufferSurfaceFrameTX);
+                addSurfaceFrameDroppedForBuffer(mDrawingState.bufferSurfaceFrameTX, systemTime());
                 mDrawingState.bufferSurfaceFrameTX.reset();
             }
         } else if (EARLY_RELEASE_ENABLED && mLastClientCompositionFence != nullptr) {
@@ -3095,6 +3125,16 @@
         return true;
     }
 
+    if ((mDrawingState.producerId > bufferData.producerId) ||
+        ((mDrawingState.producerId == bufferData.producerId) &&
+         (mDrawingState.frameNumber > frameNumber))) {
+        ALOGE("Out of order buffers detected for %s producedId=%d frameNumber=%" PRIu64
+              " -> producedId=%d frameNumber=%" PRIu64,
+              getDebugName(), mDrawingState.producerId, mDrawingState.frameNumber,
+              bufferData.producerId, frameNumber);
+        TransactionTraceWriter::getInstance().invoke("out_of_order_buffers_", /*overwrite=*/false);
+    }
+
     mDrawingState.producerId = bufferData.producerId;
     mDrawingState.barrierProducerId =
             std::max(mDrawingState.producerId, mDrawingState.barrierProducerId);
@@ -3102,7 +3142,6 @@
     mDrawingState.barrierFrameNumber =
             std::max(mDrawingState.frameNumber, mDrawingState.barrierFrameNumber);
 
-    // TODO(b/277265947) log and flush transaction trace when we detect out of order updates
     mDrawingState.releaseBufferListener = bufferData.releaseBufferListener;
     mDrawingState.buffer = std::move(buffer);
     mDrawingState.acquireFence = bufferData.flags.test(BufferData::BufferDataChange::fenceChanged)
@@ -3599,7 +3638,7 @@
     return {inputBounds, inputBoundsValid};
 }
 
-bool Layer::simpleBufferUpdate(const layer_state_t& s) const {
+bool Layer::isSimpleBufferUpdate(const layer_state_t& s) const {
     const uint64_t requiredFlags = layer_state_t::eBufferChanged;
 
     const uint64_t deniedFlags = layer_state_t::eProducerDisconnect | layer_state_t::eLayerChanged |
@@ -3608,51 +3647,42 @@
             layer_state_t::eLayerStackChanged | layer_state_t::eAutoRefreshChanged |
             layer_state_t::eReparent;
 
-    const uint64_t allowedFlags = layer_state_t::eHasListenerCallbacksChanged |
-            layer_state_t::eFrameRateSelectionPriority | layer_state_t::eFrameRateChanged |
-            layer_state_t::eSurfaceDamageRegionChanged | layer_state_t::eApiChanged |
-            layer_state_t::eMetadataChanged | layer_state_t::eDropInputModeChanged |
-            layer_state_t::eInputInfoChanged;
-
     if ((s.what & requiredFlags) != requiredFlags) {
-        ALOGV("%s: false [missing required flags 0x%" PRIx64 "]", __func__,
-              (s.what | requiredFlags) & ~s.what);
+        ATRACE_FORMAT_INSTANT("%s: false [missing required flags 0x%" PRIx64 "]", __func__,
+                              (s.what | requiredFlags) & ~s.what);
         return false;
     }
 
     if (s.what & deniedFlags) {
-        ALOGV("%s: false [has denied flags 0x%" PRIx64 "]", __func__, s.what & deniedFlags);
+        ATRACE_FORMAT_INSTANT("%s: false [has denied flags 0x%" PRIx64 "]", __func__,
+                              s.what & deniedFlags);
         return false;
     }
 
-    if (s.what & allowedFlags) {
-        ALOGV("%s: [has allowed flags 0x%" PRIx64 "]", __func__, s.what & allowedFlags);
-    }
-
     if (s.what & layer_state_t::ePositionChanged) {
         if (mRequestedTransform.tx() != s.x || mRequestedTransform.ty() != s.y) {
-            ALOGV("%s: false [ePositionChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [ePositionChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eAlphaChanged) {
         if (mDrawingState.color.a != s.color.a) {
-            ALOGV("%s: false [eAlphaChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eAlphaChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eColorTransformChanged) {
         if (mDrawingState.colorTransform != s.colorTransform) {
-            ALOGV("%s: false [eColorTransformChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eColorTransformChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eBackgroundColorChanged) {
         if (mDrawingState.bgColorLayer || s.bgColor.a != 0) {
-            ALOGV("%s: false [eBackgroundColorChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eBackgroundColorChanged changed]", __func__);
             return false;
         }
     }
@@ -3662,91 +3692,92 @@
             mRequestedTransform.dtdy() != s.matrix.dtdy ||
             mRequestedTransform.dtdx() != s.matrix.dtdx ||
             mRequestedTransform.dsdy() != s.matrix.dsdy) {
-            ALOGV("%s: false [eMatrixChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eMatrixChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eCornerRadiusChanged) {
         if (mDrawingState.cornerRadius != s.cornerRadius) {
-            ALOGV("%s: false [eCornerRadiusChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eCornerRadiusChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eBackgroundBlurRadiusChanged) {
         if (mDrawingState.backgroundBlurRadius != static_cast<int>(s.backgroundBlurRadius)) {
-            ALOGV("%s: false [eBackgroundBlurRadiusChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eBackgroundBlurRadiusChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eBufferTransformChanged) {
         if (mDrawingState.bufferTransform != s.bufferTransform) {
-            ALOGV("%s: false [eBufferTransformChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eBufferTransformChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eTransformToDisplayInverseChanged) {
         if (mDrawingState.transformToDisplayInverse != s.transformToDisplayInverse) {
-            ALOGV("%s: false [eTransformToDisplayInverseChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eTransformToDisplayInverseChanged changed]",
+                                  __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eCropChanged) {
         if (mDrawingState.crop != s.crop) {
-            ALOGV("%s: false [eCropChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eCropChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eDataspaceChanged) {
         if (mDrawingState.dataspace != s.dataspace) {
-            ALOGV("%s: false [eDataspaceChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eDataspaceChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eHdrMetadataChanged) {
         if (mDrawingState.hdrMetadata != s.hdrMetadata) {
-            ALOGV("%s: false [eHdrMetadataChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eHdrMetadataChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eSidebandStreamChanged) {
         if (mDrawingState.sidebandStream != s.sidebandStream) {
-            ALOGV("%s: false [eSidebandStreamChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eSidebandStreamChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eColorSpaceAgnosticChanged) {
         if (mDrawingState.colorSpaceAgnostic != s.colorSpaceAgnostic) {
-            ALOGV("%s: false [eColorSpaceAgnosticChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eColorSpaceAgnosticChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eShadowRadiusChanged) {
         if (mDrawingState.shadowRadius != s.shadowRadius) {
-            ALOGV("%s: false [eShadowRadiusChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eShadowRadiusChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eFixedTransformHintChanged) {
         if (mDrawingState.fixedTransformHint != s.fixedTransformHint) {
-            ALOGV("%s: false [eFixedTransformHintChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eFixedTransformHintChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eTrustedOverlayChanged) {
         if (mDrawingState.isTrustedOverlay != s.isTrustedOverlay) {
-            ALOGV("%s: false [eTrustedOverlayChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eTrustedOverlayChanged changed]", __func__);
             return false;
         }
     }
@@ -3755,28 +3786,28 @@
         StretchEffect temp = s.stretchEffect;
         temp.sanitize();
         if (mDrawingState.stretchEffect != temp) {
-            ALOGV("%s: false [eStretchChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eStretchChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eBufferCropChanged) {
         if (mDrawingState.bufferCrop != s.bufferCrop) {
-            ALOGV("%s: false [eBufferCropChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eBufferCropChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eDestinationFrameChanged) {
         if (mDrawingState.destinationFrame != s.destinationFrame) {
-            ALOGV("%s: false [eDestinationFrameChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eDestinationFrameChanged changed]", __func__);
             return false;
         }
     }
 
     if (s.what & layer_state_t::eDimmingEnabledChanged) {
         if (mDrawingState.dimmingEnabled != s.dimmingEnabled) {
-            ALOGV("%s: false [eDimmingEnabledChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eDimmingEnabledChanged changed]", __func__);
             return false;
         }
     }
@@ -3784,12 +3815,11 @@
     if (s.what & layer_state_t::eExtendedRangeBrightnessChanged) {
         if (mDrawingState.currentHdrSdrRatio != s.currentHdrSdrRatio ||
             mDrawingState.desiredHdrSdrRatio != s.desiredHdrSdrRatio) {
-            ALOGV("%s: false [eExtendedRangeBrightnessChanged changed]", __func__);
+            ATRACE_FORMAT_INSTANT("%s: false [eExtendedRangeBrightnessChanged changed]", __func__);
             return false;
         }
     }
 
-    ALOGV("%s: true", __func__);
     return true;
 }
 
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index f7596e2..2fbbbdc 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -785,8 +785,8 @@
     void setFrameTimelineVsyncForBufferlessTransaction(const FrameTimelineInfo& info,
                                                        nsecs_t postTime);
 
-    void addSurfaceFrameDroppedForBuffer(
-            std::shared_ptr<frametimeline::SurfaceFrame>& surfaceFrame);
+    void addSurfaceFrameDroppedForBuffer(std::shared_ptr<frametimeline::SurfaceFrame>& surfaceFrame,
+                                         nsecs_t dropTime);
     void addSurfaceFramePresentedForBuffer(
             std::shared_ptr<frametimeline::SurfaceFrame>& surfaceFrame, nsecs_t acquireFenceTime,
             nsecs_t currentLatchTime);
@@ -795,6 +795,8 @@
             const FrameTimelineInfo& info, nsecs_t postTime);
     std::shared_ptr<frametimeline::SurfaceFrame> createSurfaceFrameForBuffer(
             const FrameTimelineInfo& info, nsecs_t queueTime, std::string debugName);
+    void setFrameTimelineVsyncForSkippedFrames(const FrameTimelineInfo& info, nsecs_t postTime,
+                                               std::string debugName);
 
     bool setTrustedPresentationInfo(TrustedPresentationThresholds const& thresholds,
                                     TrustedPresentationListener const& listener);
@@ -866,7 +868,7 @@
     std::string getPendingBufferCounterName() { return mBlastTransactionName; }
     bool updateGeometry();
 
-    bool simpleBufferUpdate(const layer_state_t&) const;
+    bool isSimpleBufferUpdate(const layer_state_t& s) const;
 
     static bool isOpaqueFormat(PixelFormat format);
 
diff --git a/services/surfaceflinger/LayerProtoHelper.cpp b/services/surfaceflinger/LayerProtoHelper.cpp
index 3472d20..e61916c 100644
--- a/services/surfaceflinger/LayerProtoHelper.cpp
+++ b/services/surfaceflinger/LayerProtoHelper.cpp
@@ -446,7 +446,7 @@
 }
 
 google::protobuf::RepeatedPtrField<DisplayProto> LayerProtoHelper::writeDisplayInfoToProto(
-        const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displayInfos) {
+        const frontend::DisplayInfos& displayInfos) {
     google::protobuf::RepeatedPtrField<DisplayProto> displays;
     displays.Reserve(displayInfos.size());
     for (const auto& [layerStack, displayInfo] : displayInfos) {
diff --git a/services/surfaceflinger/LayerProtoHelper.h b/services/surfaceflinger/LayerProtoHelper.h
index b84a49b..346685f 100644
--- a/services/surfaceflinger/LayerProtoHelper.h
+++ b/services/surfaceflinger/LayerProtoHelper.h
@@ -26,6 +26,8 @@
 #include <ui/Region.h>
 #include <ui/Transform.h>
 #include <cstdint>
+
+#include "FrontEnd/DisplayInfo.h"
 #include "FrontEnd/LayerHierarchy.h"
 #include "FrontEnd/LayerSnapshot.h"
 
@@ -65,15 +67,15 @@
                                      const frontend::RequestedLayerState& requestedState,
                                      const frontend::LayerSnapshot& snapshot, uint32_t traceFlags);
     static google::protobuf::RepeatedPtrField<DisplayProto> writeDisplayInfoToProto(
-            const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displayInfos);
+            const frontend::DisplayInfos&);
 };
 
 class LayerProtoFromSnapshotGenerator {
 public:
-    LayerProtoFromSnapshotGenerator(
-            const frontend::LayerSnapshotBuilder& snapshotBuilder,
-            const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displayInfos,
-            const std::unordered_map<uint32_t, sp<Layer>>& legacyLayers, uint32_t traceFlags)
+    LayerProtoFromSnapshotGenerator(const frontend::LayerSnapshotBuilder& snapshotBuilder,
+                                    const frontend::DisplayInfos& displayInfos,
+                                    const std::unordered_map<uint32_t, sp<Layer>>& legacyLayers,
+                                    uint32_t traceFlags)
           : mSnapshotBuilder(snapshotBuilder),
             mLegacyLayers(legacyLayers),
             mDisplayInfos(displayInfos),
@@ -88,7 +90,7 @@
 
     const frontend::LayerSnapshotBuilder& mSnapshotBuilder;
     const std::unordered_map<uint32_t, sp<Layer>>& mLegacyLayers;
-    const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& mDisplayInfos;
+    const frontend::DisplayInfos& mDisplayInfos;
     uint32_t mTraceFlags;
     LayersProto mLayersProto;
     // winscope expects all the layers, so provide a snapshot even if it not currently drawing
diff --git a/services/surfaceflinger/Scheduler/Android.bp b/services/surfaceflinger/Scheduler/Android.bp
index d5d8688..6d2586a 100644
--- a/services/surfaceflinger/Scheduler/Android.bp
+++ b/services/surfaceflinger/Scheduler/Android.bp
@@ -40,6 +40,7 @@
     name: "libscheduler",
     defaults: ["libscheduler_defaults"],
     srcs: [
+        "src/FrameTargeter.cpp",
         "src/PresentLatencyTracker.cpp",
         "src/Timer.cpp",
     ],
@@ -52,6 +53,7 @@
     test_suites: ["device-tests"],
     defaults: ["libscheduler_defaults"],
     srcs: [
+        "tests/FrameTargeterTest.cpp",
         "tests/PresentLatencyTrackerTest.cpp",
         "tests/TimerTest.cpp",
     ],
diff --git a/services/surfaceflinger/Scheduler/ISchedulerCallback.h b/services/surfaceflinger/Scheduler/ISchedulerCallback.h
index 92c2189..badbf53 100644
--- a/services/surfaceflinger/Scheduler/ISchedulerCallback.h
+++ b/services/surfaceflinger/Scheduler/ISchedulerCallback.h
@@ -25,7 +25,7 @@
 namespace android::scheduler {
 
 struct ISchedulerCallback {
-    virtual void setVsyncEnabled(PhysicalDisplayId, bool) = 0;
+    virtual void requestHardwareVsync(PhysicalDisplayId, bool enabled) = 0;
     virtual void requestDisplayModes(std::vector<display::DisplayModeRequest>) = 0;
     virtual void kernelTimerChanged(bool expired) = 0;
     virtual void triggerOnFrameRateOverridesChanged() = 0;
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 9319543..41639b6 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -31,6 +31,7 @@
 #include <gui/TraceUtils.h>
 #include <gui/WindowInfo.h>
 #include <system/window.h>
+#include <ui/DisplayMap.h>
 #include <utils/Timers.h>
 
 #include <FrameTimeline/FrameTimeline.h>
@@ -44,7 +45,6 @@
 #include <numeric>
 
 #include "../Layer.h"
-#include "Display/DisplayMap.h"
 #include "EventThread.h"
 #include "FrameRateOverrideMappings.h"
 #include "FrontEnd/LayerHandle.h"
@@ -114,8 +114,12 @@
 }
 
 void Scheduler::registerDisplay(PhysicalDisplayId displayId, RefreshRateSelectorPtr selectorPtr) {
-    registerDisplayInternal(displayId, std::move(selectorPtr),
-                            std::make_shared<VsyncSchedule>(displayId, mFeatures));
+    auto schedulePtr = std::make_shared<VsyncSchedule>(displayId, mFeatures,
+                                                       [this](PhysicalDisplayId id, bool enable) {
+                                                           onHardwareVsyncRequest(id, enable);
+                                                       });
+
+    registerDisplayInternal(displayId, std::move(selectorPtr), std::move(schedulePtr));
 }
 
 void Scheduler::registerDisplayInternal(PhysicalDisplayId displayId,
@@ -123,14 +127,22 @@
                                         VsyncSchedulePtr schedulePtr) {
     demotePacesetterDisplay();
 
-    std::shared_ptr<VsyncSchedule> pacesetterVsyncSchedule;
-    {
+    auto [pacesetterVsyncSchedule, isNew] = [&]() FTL_FAKE_GUARD(kMainThreadContext) {
         std::scoped_lock lock(mDisplayLock);
-        mDisplays.emplace_or_replace(displayId, std::move(selectorPtr), std::move(schedulePtr));
+        const bool isNew = mDisplays
+                                   .emplace_or_replace(displayId, std::move(selectorPtr),
+                                                       std::move(schedulePtr))
+                                   .second;
 
-        pacesetterVsyncSchedule = promotePacesetterDisplayLocked();
-    }
+        return std::make_pair(promotePacesetterDisplayLocked(), isNew);
+    }();
+
     applyNewVsyncSchedule(std::move(pacesetterVsyncSchedule));
+
+    // Disable hardware VSYNC if the registration is new, as opposed to a renewal.
+    if (isNew) {
+        onHardwareVsyncRequest(displayId, false);
+    }
 }
 
 void Scheduler::unregisterDisplay(PhysicalDisplayId displayId) {
@@ -159,14 +171,21 @@
 
 void Scheduler::onFrameSignal(ICompositor& compositor, VsyncId vsyncId,
                               TimePoint expectedVsyncTime) {
-    const TimePoint frameTime = SchedulerClock::now();
+    mPacesetterFrameTargeter.beginFrame({.frameBeginTime = SchedulerClock::now(),
+                                         .vsyncId = vsyncId,
+                                         .expectedVsyncTime = expectedVsyncTime,
+                                         .sfWorkDuration =
+                                                 mVsyncModulator->getVsyncConfig().sfWorkDuration},
+                                        *getVsyncSchedule());
 
-    if (!compositor.commit(frameTime, vsyncId, expectedVsyncTime)) {
+    if (!compositor.commit(mPacesetterFrameTargeter.target())) {
         return;
     }
 
-    compositor.composite(frameTime, vsyncId);
+    const auto compositeResult = compositor.composite(mPacesetterFrameTargeter);
     compositor.sample();
+
+    mPacesetterFrameTargeter.endFrame(compositeResult);
 }
 
 std::optional<Fps> Scheduler::getFrameRateOverride(uid_t uid) const {
@@ -176,23 +195,23 @@
             .getFrameRateOverrideForUid(uid, supportsFrameRateOverrideByContent);
 }
 
-bool Scheduler::isVsyncValid(TimePoint expectedVsyncTimestamp, uid_t uid) const {
+bool Scheduler::isVsyncValid(TimePoint expectedVsyncTime, uid_t uid) const {
     const auto frameRate = getFrameRateOverride(uid);
     if (!frameRate.has_value()) {
         return true;
     }
 
     ATRACE_FORMAT("%s uid: %d frameRate: %s", __func__, uid, to_string(*frameRate).c_str());
-    return getVsyncSchedule()->getTracker().isVSyncInPhase(expectedVsyncTimestamp.ns(), *frameRate);
+    return getVsyncSchedule()->getTracker().isVSyncInPhase(expectedVsyncTime.ns(), *frameRate);
 }
 
-bool Scheduler::isVsyncInPhase(TimePoint timePoint, const Fps frameRate) const {
-    return getVsyncSchedule()->getTracker().isVSyncInPhase(timePoint.ns(), frameRate);
+bool Scheduler::isVsyncInPhase(TimePoint expectedVsyncTime, Fps frameRate) const {
+    return getVsyncSchedule()->getTracker().isVSyncInPhase(expectedVsyncTime.ns(), frameRate);
 }
 
 impl::EventThread::ThrottleVsyncCallback Scheduler::makeThrottleVsyncCallback() const {
-    return [this](nsecs_t expectedVsyncTimestamp, uid_t uid) {
-        return !isVsyncValid(TimePoint::fromNs(expectedVsyncTimestamp), uid);
+    return [this](nsecs_t expectedVsyncTime, uid_t uid) {
+        return !isVsyncValid(TimePoint::fromNs(expectedVsyncTime), uid);
     };
 }
 
@@ -407,13 +426,13 @@
 void Scheduler::enableHardwareVsync(PhysicalDisplayId id) {
     auto schedule = getVsyncSchedule(id);
     LOG_ALWAYS_FATAL_IF(!schedule);
-    schedule->enableHardwareVsync(mSchedulerCallback);
+    schedule->enableHardwareVsync();
 }
 
 void Scheduler::disableHardwareVsync(PhysicalDisplayId id, bool disallow) {
     auto schedule = getVsyncSchedule(id);
     LOG_ALWAYS_FATAL_IF(!schedule);
-    schedule->disableHardwareVsync(mSchedulerCallback, disallow);
+    schedule->disableHardwareVsync(disallow);
 }
 
 void Scheduler::resyncAllToHardwareVsync(bool allowToEnable) {
@@ -440,12 +459,32 @@
             refreshRate = display.selectorPtr->getActiveMode().modePtr->getFps();
         }
         if (refreshRate->isValid()) {
-            display.schedulePtr->startPeriodTransition(mSchedulerCallback, refreshRate->getPeriod(),
-                                                       false /* force */);
+            constexpr bool kForce = false;
+            display.schedulePtr->startPeriodTransition(refreshRate->getPeriod(), kForce);
         }
     }
 }
 
+void Scheduler::onHardwareVsyncRequest(PhysicalDisplayId id, bool enabled) {
+    static const auto& whence = __func__;
+    ATRACE_NAME(ftl::Concat(whence, ' ', id.value, ' ', enabled).c_str());
+
+    // On main thread to serialize reads/writes of pending hardware VSYNC state.
+    static_cast<void>(
+            schedule([=]() FTL_FAKE_GUARD(mDisplayLock) FTL_FAKE_GUARD(kMainThreadContext) {
+                ATRACE_NAME(ftl::Concat(whence, ' ', id.value, ' ', enabled).c_str());
+
+                if (const auto displayOpt = mDisplays.get(id)) {
+                    auto& display = displayOpt->get();
+                    display.schedulePtr->setPendingHardwareVsyncState(enabled);
+
+                    if (display.powerMode != hal::PowerMode::OFF) {
+                        mSchedulerCallback.requestHardwareVsync(id, enabled);
+                    }
+                }
+            }));
+}
+
 void Scheduler::setRenderRate(PhysicalDisplayId id, Fps renderFrameRate) {
     std::scoped_lock lock(mDisplayLock);
     ftl::FakeGuard guard(kMainThreadContext);
@@ -491,18 +530,17 @@
         ALOGW("%s: Invalid display %s!", __func__, to_string(id).c_str());
         return false;
     }
-    return schedule->addResyncSample(mSchedulerCallback, TimePoint::fromNs(timestamp),
-                                     hwcVsyncPeriod);
+    return schedule->addResyncSample(TimePoint::fromNs(timestamp), hwcVsyncPeriod);
 }
 
 void Scheduler::addPresentFence(PhysicalDisplayId id, std::shared_ptr<FenceTime> fence) {
     auto schedule = getVsyncSchedule(id);
     LOG_ALWAYS_FATAL_IF(!schedule);
-    const bool needMoreSignals = schedule->getController().addPresentFence(std::move(fence));
-    if (needMoreSignals) {
-        schedule->enableHardwareVsync(mSchedulerCallback);
+    if (const bool needMoreSignals = schedule->getController().addPresentFence(std::move(fence))) {
+        schedule->enableHardwareVsync();
     } else {
-        schedule->disableHardwareVsync(mSchedulerCallback, false /* disallow */);
+        constexpr bool kDisallow = false;
+        schedule->disableHardwareVsync(kDisallow);
     }
 }
 
@@ -566,9 +604,13 @@
     }
     {
         std::scoped_lock lock(mDisplayLock);
-        auto vsyncSchedule = getVsyncScheduleLocked(id);
-        LOG_ALWAYS_FATAL_IF(!vsyncSchedule);
-        vsyncSchedule->getController().setDisplayPowerMode(powerMode);
+
+        const auto displayOpt = mDisplays.get(id);
+        LOG_ALWAYS_FATAL_IF(!displayOpt);
+        auto& display = displayOpt->get();
+
+        display.powerMode = powerMode;
+        display.schedulePtr->getController().setDisplayPowerMode(powerMode);
     }
     if (!isPacesetter) return;
 
@@ -626,7 +668,7 @@
         ftl::FakeGuard guard(kMainThreadContext);
         for (const auto& [_, display] : mDisplays) {
             constexpr bool kDisallow = false;
-            display.schedulePtr->disableHardwareVsync(mSchedulerCallback, kDisallow);
+            display.schedulePtr->disableHardwareVsync(kDisallow);
         }
     }
 
@@ -681,6 +723,8 @@
 
     mFrameRateOverrideMappings.dump(dumper);
     dumper.eol();
+
+    mPacesetterFrameTargeter.dump(dumper);
 }
 
 void Scheduler::dumpVsync(std::string& out) const {
@@ -745,8 +789,8 @@
         newVsyncSchedulePtr = pacesetter.schedulePtr;
 
         const Fps refreshRate = pacesetter.selectorPtr->getActiveMode().modePtr->getFps();
-        newVsyncSchedulePtr->startPeriodTransition(mSchedulerCallback, refreshRate.getPeriod(),
-                                                   true /* force */);
+        constexpr bool kForce = true;
+        newVsyncSchedulePtr->startPeriodTransition(refreshRate.getPeriod(), kForce);
     }
     return newVsyncSchedulePtr;
 }
@@ -846,7 +890,7 @@
     ATRACE_CALL();
 
     using RankedRefreshRates = RefreshRateSelector::RankedFrameRates;
-    display::PhysicalDisplayVector<RankedRefreshRates> perDisplayRanking;
+    ui::PhysicalDisplayVector<RankedRefreshRates> perDisplayRanking;
     const auto globalSignals = makeGlobalSignals();
     Fps pacesetterFps;
 
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index f13c878..17e9cea 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -35,11 +35,12 @@
 #include <ftl/fake_guard.h>
 #include <ftl/optional.h>
 #include <scheduler/Features.h>
+#include <scheduler/FrameTargeter.h>
 #include <scheduler/Time.h>
 #include <scheduler/VsyncConfig.h>
 #include <ui/DisplayId.h>
+#include <ui/DisplayMap.h>
 
-#include "Display/DisplayMap.h"
 #include "Display/DisplayModeRequest.h"
 #include "EventThread.h"
 #include "FrameRateOverrideMappings.h"
@@ -249,9 +250,11 @@
         return std::const_pointer_cast<VsyncSchedule>(std::as_const(*this).getVsyncSchedule(idOpt));
     }
 
+    const FrameTarget& pacesetterFrameTarget() { return mPacesetterFrameTargeter.target(); }
+
     // Returns true if a given vsync timestamp is considered valid vsync
     // for a given uid
-    bool isVsyncValid(TimePoint expectedVsyncTimestamp, uid_t uid) const;
+    bool isVsyncValid(TimePoint expectedVsyncTime, uid_t uid) const;
 
     bool isVsyncInPhase(TimePoint expectedVsyncTime, Fps frameRate) const;
 
@@ -317,6 +320,9 @@
     void touchTimerCallback(TimerState);
     void displayPowerTimerCallback(TimerState);
 
+    // VsyncSchedule delegate.
+    void onHardwareVsyncRequest(PhysicalDisplayId, bool enable);
+
     void resyncToHardwareVsyncLocked(PhysicalDisplayId, bool allowToEnable,
                                      std::optional<Fps> refreshRate = std::nullopt)
             REQUIRES(kMainThreadContext, mDisplayLock);
@@ -371,7 +377,7 @@
         }
     };
 
-    using DisplayModeChoiceMap = display::PhysicalDisplayMap<PhysicalDisplayId, DisplayModeChoice>;
+    using DisplayModeChoiceMap = ui::PhysicalDisplayMap<PhysicalDisplayId, DisplayModeChoice>;
 
     // See mDisplayLock for thread safety.
     DisplayModeChoiceMap chooseDisplayModes() const
@@ -430,17 +436,21 @@
         // Effectively const except in move constructor.
         RefreshRateSelectorPtr selectorPtr;
         VsyncSchedulePtr schedulePtr;
+
+        hal::PowerMode powerMode = hal::PowerMode::OFF;
     };
 
     using DisplayRef = std::reference_wrapper<Display>;
     using ConstDisplayRef = std::reference_wrapper<const Display>;
 
-    display::PhysicalDisplayMap<PhysicalDisplayId, Display> mDisplays GUARDED_BY(mDisplayLock)
+    ui::PhysicalDisplayMap<PhysicalDisplayId, Display> mDisplays GUARDED_BY(mDisplayLock)
             GUARDED_BY(kMainThreadContext);
 
     ftl::Optional<PhysicalDisplayId> mPacesetterDisplayId GUARDED_BY(mDisplayLock)
             GUARDED_BY(kMainThreadContext);
 
+    FrameTargeter mPacesetterFrameTargeter{mFeatures.test(Feature::kBackpressureGpuComposition)};
+
     ftl::Optional<DisplayRef> pacesetterDisplayLocked() REQUIRES(mDisplayLock) {
         return static_cast<const Scheduler*>(this)->pacesetterDisplayLocked().transform(
                 [](const Display& display) { return std::ref(const_cast<Display&>(display)); });
diff --git a/services/surfaceflinger/Scheduler/VsyncSchedule.cpp b/services/surfaceflinger/Scheduler/VsyncSchedule.cpp
index 84671ae..5691792 100644
--- a/services/surfaceflinger/Scheduler/VsyncSchedule.cpp
+++ b/services/surfaceflinger/Scheduler/VsyncSchedule.cpp
@@ -17,12 +17,12 @@
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
 #include <ftl/fake_guard.h>
+#include <gui/TraceUtils.h>
 #include <scheduler/Fps.h>
 #include <scheduler/Timer.h>
 
 #include "VsyncSchedule.h"
 
-#include "ISchedulerCallback.h"
 #include "Utils/Dumper.h"
 #include "VSyncDispatchTimerQueue.h"
 #include "VSyncPredictor.h"
@@ -54,8 +54,10 @@
     VSyncCallbackRegistration mRegistration;
 };
 
-VsyncSchedule::VsyncSchedule(PhysicalDisplayId id, FeatureFlags features)
+VsyncSchedule::VsyncSchedule(PhysicalDisplayId id, FeatureFlags features,
+                             RequestHardwareVsync requestHardwareVsync)
       : mId(id),
+        mRequestHardwareVsync(std::move(requestHardwareVsync)),
         mTracker(createTracker(id)),
         mDispatch(createDispatch(mTracker)),
         mController(createController(id, *mTracker, features)),
@@ -64,8 +66,9 @@
                         : nullptr) {}
 
 VsyncSchedule::VsyncSchedule(PhysicalDisplayId id, TrackerPtr tracker, DispatchPtr dispatch,
-                             ControllerPtr controller)
+                             ControllerPtr controller, RequestHardwareVsync requestHardwareVsync)
       : mId(id),
+        mRequestHardwareVsync(std::move(requestHardwareVsync)),
         mTracker(std::move(tracker)),
         mDispatch(std::move(dispatch)),
         mController(std::move(controller)) {}
@@ -135,14 +138,21 @@
     return reactor;
 }
 
-void VsyncSchedule::startPeriodTransition(ISchedulerCallback& callback, Period period, bool force) {
+void VsyncSchedule::startPeriodTransition(Period period, bool force) {
     std::lock_guard<std::mutex> lock(mHwVsyncLock);
     mController->startPeriodTransition(period.ns(), force);
-    enableHardwareVsyncLocked(callback);
+    enableHardwareVsyncLocked();
 }
 
-bool VsyncSchedule::addResyncSample(ISchedulerCallback& callback, TimePoint timestamp,
-                                    ftl::Optional<Period> hwcVsyncPeriod) {
+bool VsyncSchedule::addResyncSample(TimePoint timestamp, ftl::Optional<Period> hwcVsyncPeriod) {
+    ATRACE_CALL();
+
+    if (mClearTimestampsOnNextSample) {
+        ATRACE_FORMAT("clearing sample after HW vsync enabled", __func__);
+        getTracker().resetModel();
+        mClearTimestampsOnNextSample = false;
+    }
+
     bool needsHwVsync = false;
     bool periodFlushed = false;
     {
@@ -154,31 +164,32 @@
         }
     }
     if (needsHwVsync) {
-        enableHardwareVsync(callback);
+        enableHardwareVsync();
     } else {
-        disableHardwareVsync(callback, false /* disallow */);
+        constexpr bool kDisallow = false;
+        disableHardwareVsync(kDisallow);
     }
     return periodFlushed;
 }
 
-void VsyncSchedule::enableHardwareVsync(ISchedulerCallback& callback) {
+void VsyncSchedule::enableHardwareVsync() {
     std::lock_guard<std::mutex> lock(mHwVsyncLock);
-    enableHardwareVsyncLocked(callback);
+    enableHardwareVsyncLocked();
 }
 
-void VsyncSchedule::enableHardwareVsyncLocked(ISchedulerCallback& callback) {
+void VsyncSchedule::enableHardwareVsyncLocked() {
     if (mHwVsyncState == HwVsyncState::Disabled) {
-        getTracker().resetModel();
-        callback.setVsyncEnabled(mId, true);
+        mClearTimestampsOnNextSample = true;
+        mRequestHardwareVsync(mId, true);
         mHwVsyncState = HwVsyncState::Enabled;
     }
 }
 
-void VsyncSchedule::disableHardwareVsync(ISchedulerCallback& callback, bool disallow) {
+void VsyncSchedule::disableHardwareVsync(bool disallow) {
     std::lock_guard<std::mutex> lock(mHwVsyncLock);
     switch (mHwVsyncState) {
         case HwVsyncState::Enabled:
-            callback.setVsyncEnabled(mId, false);
+            mRequestHardwareVsync(mId, false);
             [[fallthrough]];
         case HwVsyncState::Disabled:
             mHwVsyncState = disallow ? HwVsyncState::Disallowed : HwVsyncState::Disabled;
diff --git a/services/surfaceflinger/Scheduler/VsyncSchedule.h b/services/surfaceflinger/Scheduler/VsyncSchedule.h
index 763d058..c037ac8 100644
--- a/services/surfaceflinger/Scheduler/VsyncSchedule.h
+++ b/services/surfaceflinger/Scheduler/VsyncSchedule.h
@@ -16,17 +16,21 @@
 
 #pragma once
 
+#include <functional>
 #include <memory>
 #include <string>
 
-#include <ThreadContext.h>
 #include <android-base/thread_annotations.h>
 #include <ftl/enum.h>
 #include <ftl/optional.h>
-#include <scheduler/Features.h>
-#include <scheduler/Time.h>
 #include <ui/DisplayId.h>
 
+#include <scheduler/Features.h>
+#include <scheduler/IVsyncSource.h>
+#include <scheduler/Time.h>
+
+#include "ThreadContext.h"
+
 namespace android {
 class EventThreadTest;
 class VsyncScheduleTest;
@@ -38,8 +42,6 @@
 
 namespace android::scheduler {
 
-struct ISchedulerCallback;
-
 // TODO(b/185535769): Rename classes, and remove aliases.
 class VSyncDispatch;
 class VSyncTracker;
@@ -49,13 +51,16 @@
 using VsyncTracker = VSyncTracker;
 
 // Schedule that synchronizes to hardware VSYNC of a physical display.
-class VsyncSchedule {
+class VsyncSchedule final : public IVsyncSource {
 public:
-    VsyncSchedule(PhysicalDisplayId, FeatureFlags);
+    using RequestHardwareVsync = std::function<void(PhysicalDisplayId, bool enabled)>;
+
+    VsyncSchedule(PhysicalDisplayId, FeatureFlags, RequestHardwareVsync);
     ~VsyncSchedule();
 
-    Period period() const;
-    TimePoint vsyncDeadlineAfter(TimePoint) const;
+    // IVsyncSource overrides:
+    Period period() const override;
+    TimePoint vsyncDeadlineAfter(TimePoint) const override;
 
     // Inform the schedule that the period is changing and the schedule needs to recalibrate
     // itself. The schedule will end the period transition internally. This will
@@ -64,13 +69,12 @@
     // \param [in] period   The period that the system is changing into.
     // \param [in] force    True to force a transition even if it is not a
     //                      change.
-    void startPeriodTransition(ISchedulerCallback&, Period period, bool force);
+    void startPeriodTransition(Period period, bool force);
 
     // Pass a VSYNC sample to VsyncController. Return true if
     // VsyncController detected that the VSYNC period changed. Enable or disable
     // hardware VSYNCs depending on whether more samples are needed.
-    bool addResyncSample(ISchedulerCallback&, TimePoint timestamp,
-                         ftl::Optional<Period> hwcVsyncPeriod);
+    bool addResyncSample(TimePoint timestamp, ftl::Optional<Period> hwcVsyncPeriod);
 
     // TODO(b/185535769): Hide behind API.
     const VsyncTracker& getTracker() const { return *mTracker; }
@@ -89,12 +93,12 @@
 
     // Turn on hardware VSYNCs, unless mHwVsyncState is Disallowed, in which
     // case this call is ignored.
-    void enableHardwareVsync(ISchedulerCallback&) EXCLUDES(mHwVsyncLock);
+    void enableHardwareVsync() EXCLUDES(mHwVsyncLock);
 
     // Disable hardware VSYNCs. If `disallow` is true, future calls to
     // enableHardwareVsync are ineffective until isHardwareVsyncAllowed is
     // called with `makeAllowed` set to true.
-    void disableHardwareVsync(ISchedulerCallback&, bool disallow) EXCLUDES(mHwVsyncLock);
+    void disableHardwareVsync(bool disallow) EXCLUDES(mHwVsyncLock);
 
     // If true, enableHardwareVsync can enable hardware VSYNC (if not already
     // enabled). If false, enableHardwareVsync does nothing.
@@ -107,8 +111,11 @@
 protected:
     using ControllerPtr = std::unique_ptr<VsyncController>;
 
+    static void NoOpRequestHardwareVsync(PhysicalDisplayId, bool) {}
+
     // For tests.
-    VsyncSchedule(PhysicalDisplayId, TrackerPtr, DispatchPtr, ControllerPtr);
+    VsyncSchedule(PhysicalDisplayId, TrackerPtr, DispatchPtr, ControllerPtr,
+                  RequestHardwareVsync = NoOpRequestHardwareVsync);
 
 private:
     friend class TestableScheduler;
@@ -120,7 +127,7 @@
     static DispatchPtr createDispatch(TrackerPtr);
     static ControllerPtr createController(PhysicalDisplayId, VsyncTracker&, FeatureFlags);
 
-    void enableHardwareVsyncLocked(ISchedulerCallback&) REQUIRES(mHwVsyncLock);
+    void enableHardwareVsyncLocked() REQUIRES(mHwVsyncLock);
 
     mutable std::mutex mHwVsyncLock;
     enum class HwVsyncState {
@@ -143,10 +150,16 @@
     // device is off.
     HwVsyncState mPendingHwVsyncState GUARDED_BY(kMainThreadContext) = HwVsyncState::Disabled;
 
+    // Whether to reset the timestamps stored in the vsync model on the next hw vsync sample. This
+    // is to avoid clearing the model when hw vsync is enabled, in order to be consistent with the
+    // stale timestamps. Instead, clear the model on the first hw vsync callback.
+    bool mClearTimestampsOnNextSample = false;
+
     class PredictedVsyncTracer;
     using TracerPtr = std::unique_ptr<PredictedVsyncTracer>;
 
     const PhysicalDisplayId mId;
+    const RequestHardwareVsync mRequestHardwareVsync;
     const TrackerPtr mTracker;
     const DispatchPtr mDispatch;
     const ControllerPtr mController;
diff --git a/services/surfaceflinger/Scheduler/include/scheduler/Features.h b/services/surfaceflinger/Scheduler/include/scheduler/Features.h
index b3a6a60..200407d 100644
--- a/services/surfaceflinger/Scheduler/include/scheduler/Features.h
+++ b/services/surfaceflinger/Scheduler/include/scheduler/Features.h
@@ -23,10 +23,11 @@
 namespace android::scheduler {
 
 enum class Feature : std::uint8_t {
-    kPresentFences = 0b1,
-    kKernelIdleTimer = 0b10,
-    kContentDetection = 0b100,
-    kTracePredictedVsync = 0b1000,
+    kPresentFences = 1 << 0,
+    kKernelIdleTimer = 1 << 1,
+    kContentDetection = 1 << 2,
+    kTracePredictedVsync = 1 << 3,
+    kBackpressureGpuComposition = 1 << 4,
 };
 
 using FeatureFlags = ftl::Flags<Feature>;
diff --git a/services/surfaceflinger/Scheduler/include/scheduler/FrameTargeter.h b/services/surfaceflinger/Scheduler/include/scheduler/FrameTargeter.h
new file mode 100644
index 0000000..85f2e64
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/include/scheduler/FrameTargeter.h
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <array>
+#include <atomic>
+#include <memory>
+
+#include <ui/Fence.h>
+#include <ui/FenceTime.h>
+
+#include <scheduler/Time.h>
+#include <scheduler/VsyncId.h>
+#include <scheduler/interface/CompositeResult.h>
+
+// TODO(b/185536303): Pull to FTL.
+#include "../../../TracedOrdinal.h"
+#include "../../../Utils/Dumper.h"
+
+namespace android::scheduler {
+
+struct IVsyncSource;
+
+// Read-only interface to the metrics computed by FrameTargeter for the latest frame.
+class FrameTarget {
+public:
+    VsyncId vsyncId() const { return mVsyncId; }
+
+    // The time when the frame actually began, as opposed to when it had been scheduled to begin.
+    TimePoint frameBeginTime() const { return mFrameBeginTime; }
+
+    // Relative to when the frame actually began, as opposed to when it had been scheduled to begin.
+    Duration expectedFrameDuration() const { return mExpectedPresentTime - mFrameBeginTime; }
+
+    TimePoint expectedPresentTime() const { return mExpectedPresentTime; }
+
+    // The time of the VSYNC that preceded this frame. See `presentFenceForPastVsync` for details.
+    TimePoint pastVsyncTime(Period vsyncPeriod) const;
+
+    // Equivalent to `pastVsyncTime` unless running N VSYNCs ahead.
+    TimePoint previousFrameVsyncTime(Period vsyncPeriod) const {
+        return mExpectedPresentTime - vsyncPeriod;
+    }
+
+    // The present fence for the frame that had targeted the most recent VSYNC before this frame.
+    // If the target VSYNC for any given frame is more than `vsyncPeriod` in the future, then the
+    // VSYNC of at least one previous frame has not yet passed. In other words, this is NOT the
+    // `presentFenceForPreviousFrame` if running N VSYNCs ahead, but the one that should have been
+    // signaled by now (unless that frame missed).
+    const FenceTimePtr& presentFenceForPastVsync(Period vsyncPeriod) const;
+
+    // Equivalent to `presentFenceForPastVsync` unless running N VSYNCs ahead.
+    const FenceTimePtr& presentFenceForPreviousFrame() const {
+        return mPresentFences.front().fenceTime;
+    }
+
+    bool wouldPresentEarly(Period vsyncPeriod) const;
+
+    bool isFramePending() const { return mFramePending; }
+    bool didMissFrame() const { return mFrameMissed; }
+    bool didMissHwcFrame() const { return mHwcFrameMissed && !mGpuFrameMissed; }
+
+protected:
+    ~FrameTarget() = default;
+
+    VsyncId mVsyncId;
+    TimePoint mFrameBeginTime;
+    TimePoint mExpectedPresentTime;
+
+    TracedOrdinal<bool> mFramePending{"PrevFramePending", false};
+    TracedOrdinal<bool> mFrameMissed{"PrevFrameMissed", false};
+    TracedOrdinal<bool> mHwcFrameMissed{"PrevHwcFrameMissed", false};
+    TracedOrdinal<bool> mGpuFrameMissed{"PrevGpuFrameMissed", false};
+
+    struct FenceWithFenceTime {
+        sp<Fence> fence = Fence::NO_FENCE;
+        FenceTimePtr fenceTime = FenceTime::NO_FENCE;
+    };
+    std::array<FenceWithFenceTime, 2> mPresentFences;
+
+private:
+    template <int N>
+    inline bool targetsVsyncsAhead(Period vsyncPeriod) const {
+        static_assert(N > 1);
+        return expectedFrameDuration() > (N - 1) * vsyncPeriod;
+    }
+};
+
+// Computes a display's per-frame metrics about past/upcoming targeting of present deadlines.
+class FrameTargeter final : private FrameTarget {
+public:
+    explicit FrameTargeter(bool backpressureGpuComposition)
+          : mBackpressureGpuComposition(backpressureGpuComposition) {}
+
+    const FrameTarget& target() const { return *this; }
+
+    struct BeginFrameArgs {
+        TimePoint frameBeginTime;
+        VsyncId vsyncId;
+        TimePoint expectedVsyncTime;
+        Duration sfWorkDuration;
+    };
+
+    void beginFrame(const BeginFrameArgs&, const IVsyncSource&);
+
+    // TODO(b/241285191): Merge with FrameTargeter::endFrame.
+    FenceTimePtr setPresentFence(sp<Fence>);
+
+    void endFrame(const CompositeResult&);
+
+    void dump(utils::Dumper&) const;
+
+private:
+    friend class FrameTargeterTest;
+
+    // For tests.
+    using IsFencePendingFuncPtr = bool (*)(const FenceTimePtr&, int graceTimeMs);
+    void beginFrame(const BeginFrameArgs&, const IVsyncSource&, IsFencePendingFuncPtr);
+    FenceTimePtr setPresentFence(sp<Fence>, FenceTimePtr);
+
+    static bool isFencePending(const FenceTimePtr&, int graceTimeMs);
+
+    const bool mBackpressureGpuComposition;
+
+    TimePoint mScheduledPresentTime;
+    CompositionCoverageFlags mCompositionCoverage;
+
+    std::atomic_uint mFrameMissedCount = 0;
+    std::atomic_uint mHwcFrameMissedCount = 0;
+    std::atomic_uint mGpuFrameMissedCount = 0;
+};
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/include/scheduler/IVsyncSource.h b/services/surfaceflinger/Scheduler/include/scheduler/IVsyncSource.h
new file mode 100644
index 0000000..bb2de75
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/include/scheduler/IVsyncSource.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2023 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 <scheduler/Time.h>
+
+namespace android::scheduler {
+
+struct IVsyncSource {
+    virtual Period period() const = 0;
+    virtual TimePoint vsyncDeadlineAfter(TimePoint) const = 0;
+
+protected:
+    ~IVsyncSource() = default;
+};
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/include/scheduler/VsyncId.h b/services/surfaceflinger/Scheduler/include/scheduler/VsyncId.h
index c64a3cd..6ca4e85 100644
--- a/services/surfaceflinger/Scheduler/include/scheduler/VsyncId.h
+++ b/services/surfaceflinger/Scheduler/include/scheduler/VsyncId.h
@@ -18,17 +18,17 @@
 
 #include <cstdint>
 
+#include <ftl/mixins.h>
+
 namespace android {
 
-// TODO(b/185536303): Import StrongTyping.h into FTL so it can be used here.
-
 // Sequential frame identifier, also known as FrameTimeline token.
-struct VsyncId {
-    int64_t value = -1;
+//
+// TODO(b/241285191): Pull to <gui/FrameTimelineInfo.h> and use VsyncId over int64_t everywhere.
+struct VsyncId : ftl::DefaultConstructible<VsyncId, int64_t, -1>,
+                 ftl::Incrementable<VsyncId>,
+                 ftl::Equatable<VsyncId> {
+    using DefaultConstructible::DefaultConstructible;
 };
 
-inline bool operator==(VsyncId lhs, VsyncId rhs) {
-    return lhs.value == rhs.value;
-}
-
 } // namespace android
diff --git a/services/surfaceflinger/Scheduler/include/scheduler/interface/CompositeResult.h b/services/surfaceflinger/Scheduler/include/scheduler/interface/CompositeResult.h
new file mode 100644
index 0000000..f795f1f
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/include/scheduler/interface/CompositeResult.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2023 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 <scheduler/interface/CompositionCoverage.h>
+
+namespace android {
+
+struct CompositeResult {
+    CompositionCoverageFlags compositionCoverage;
+};
+
+} // namespace android
diff --git a/services/surfaceflinger/Scheduler/include/scheduler/interface/ICompositor.h b/services/surfaceflinger/Scheduler/include/scheduler/interface/ICompositor.h
index cc41925..2696076 100644
--- a/services/surfaceflinger/Scheduler/include/scheduler/interface/ICompositor.h
+++ b/services/surfaceflinger/Scheduler/include/scheduler/interface/ICompositor.h
@@ -18,8 +18,15 @@
 
 #include <scheduler/Time.h>
 #include <scheduler/VsyncId.h>
+#include <scheduler/interface/CompositeResult.h>
 
 namespace android {
+namespace scheduler {
+
+class FrameTarget;
+class FrameTargeter;
+
+} // namespace scheduler
 
 struct ICompositor {
     // Configures physical displays, processing hotplug and/or mode setting via the Composer HAL.
@@ -27,11 +34,11 @@
 
     // Commits transactions for layers and displays. Returns whether any state has been invalidated,
     // i.e. whether a frame should be composited for each display.
-    virtual bool commit(TimePoint frameTime, VsyncId, TimePoint expectedVsyncTime) = 0;
+    virtual bool commit(const scheduler::FrameTarget&) = 0;
 
     // Composites a frame for each display. CompositionEngine performs GPU and/or HAL composition
     // via RenderEngine and the Composer HAL, respectively.
-    virtual void composite(TimePoint frameTime, VsyncId) = 0;
+    virtual CompositeResult composite(scheduler::FrameTargeter&) = 0;
 
     // Samples the composited frame via RegionSamplingThread.
     virtual void sample() = 0;
diff --git a/services/surfaceflinger/Scheduler/src/FrameTargeter.cpp b/services/surfaceflinger/Scheduler/src/FrameTargeter.cpp
new file mode 100644
index 0000000..7138afd
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/src/FrameTargeter.cpp
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gui/TraceUtils.h>
+
+#include <scheduler/FrameTargeter.h>
+#include <scheduler/IVsyncSource.h>
+
+namespace android::scheduler {
+
+TimePoint FrameTarget::pastVsyncTime(Period vsyncPeriod) const {
+    // TODO(b/267315508): Generalize to N VSYNCs.
+    const int shift = static_cast<int>(targetsVsyncsAhead<2>(vsyncPeriod));
+    return mExpectedPresentTime - Period::fromNs(vsyncPeriod.ns() << shift);
+}
+
+const FenceTimePtr& FrameTarget::presentFenceForPastVsync(Period vsyncPeriod) const {
+    // TODO(b/267315508): Generalize to N VSYNCs.
+    const size_t i = static_cast<size_t>(targetsVsyncsAhead<2>(vsyncPeriod));
+    return mPresentFences[i].fenceTime;
+}
+
+bool FrameTarget::wouldPresentEarly(Period vsyncPeriod) const {
+    // TODO(b/241285475): Since this is called during `composite`, the calls to `targetsVsyncsAhead`
+    // should use `TimePoint::now()` in case of delays since `mFrameBeginTime`.
+
+    // TODO(b/267315508): Generalize to N VSYNCs.
+    if (targetsVsyncsAhead<3>(vsyncPeriod)) {
+        return true;
+    }
+
+    const auto fence = presentFenceForPastVsync(vsyncPeriod);
+    return fence->isValid() && fence->getSignalTime() != Fence::SIGNAL_TIME_PENDING;
+}
+
+void FrameTargeter::beginFrame(const BeginFrameArgs& args, const IVsyncSource& vsyncSource) {
+    return beginFrame(args, vsyncSource, &FrameTargeter::isFencePending);
+}
+
+void FrameTargeter::beginFrame(const BeginFrameArgs& args, const IVsyncSource& vsyncSource,
+                               IsFencePendingFuncPtr isFencePendingFuncPtr) {
+    mVsyncId = args.vsyncId;
+    mFrameBeginTime = args.frameBeginTime;
+
+    // The `expectedVsyncTime`, which was predicted when this frame was scheduled, is normally in
+    // the future relative to `frameBeginTime`, but may not be for delayed frames. Adjust
+    // `mExpectedPresentTime` accordingly, but not `mScheduledPresentTime`.
+    const TimePoint lastScheduledPresentTime = mScheduledPresentTime;
+    mScheduledPresentTime = args.expectedVsyncTime;
+
+    const Period vsyncPeriod = vsyncSource.period();
+
+    // Calculate the expected present time once and use the cached value throughout this frame to
+    // make sure all layers are seeing this same value.
+    if (args.expectedVsyncTime >= args.frameBeginTime) {
+        mExpectedPresentTime = args.expectedVsyncTime;
+    } else {
+        mExpectedPresentTime = vsyncSource.vsyncDeadlineAfter(args.frameBeginTime);
+        if (args.sfWorkDuration > vsyncPeriod) {
+            // Inflate the expected present time if we're targeting the next VSYNC.
+            mExpectedPresentTime += vsyncPeriod;
+        }
+    }
+
+    ATRACE_FORMAT("%s %" PRId64 " vsyncIn %.2fms%s", __func__, ftl::to_underlying(args.vsyncId),
+                  ticks<std::milli, float>(mExpectedPresentTime - TimePoint::now()),
+                  mExpectedPresentTime == args.expectedVsyncTime ? "" : " (adjusted)");
+
+    const FenceTimePtr& pastPresentFence = presentFenceForPastVsync(vsyncPeriod);
+
+    // In cases where the present fence is about to fire, give it a small grace period instead of
+    // giving up on the frame.
+    //
+    // TODO(b/280667110): The grace period should depend on `sfWorkDuration` and `vsyncPeriod` being
+    // approximately equal, not whether backpressure propagation is enabled.
+    const int graceTimeForPresentFenceMs = static_cast<int>(
+            mBackpressureGpuComposition || !mCompositionCoverage.test(CompositionCoverage::Gpu));
+
+    // Pending frames may trigger backpressure propagation.
+    const auto& isFencePending = *isFencePendingFuncPtr;
+    mFramePending = pastPresentFence != FenceTime::NO_FENCE &&
+            isFencePending(pastPresentFence, graceTimeForPresentFenceMs);
+
+    // A frame is missed if the prior frame is still pending. If no longer pending, then we still
+    // count the frame as missed if the predicted present time was further in the past than when the
+    // fence actually fired. Add some slop to correct for drift. This should generally be smaller
+    // than a typical frame duration, but should not be so small that it reports reasonable drift as
+    // a missed frame.
+    mFrameMissed = mFramePending || [&] {
+        const nsecs_t pastPresentTime = pastPresentFence->getSignalTime();
+        if (pastPresentTime < 0) return false;
+        const nsecs_t frameMissedSlop = vsyncPeriod.ns() / 2;
+        return lastScheduledPresentTime.ns() < pastPresentTime - frameMissedSlop;
+    }();
+
+    mHwcFrameMissed = mFrameMissed && mCompositionCoverage.test(CompositionCoverage::Hwc);
+    mGpuFrameMissed = mFrameMissed && mCompositionCoverage.test(CompositionCoverage::Gpu);
+
+    if (mFrameMissed) mFrameMissedCount++;
+    if (mHwcFrameMissed) mHwcFrameMissedCount++;
+    if (mGpuFrameMissed) mGpuFrameMissedCount++;
+}
+
+void FrameTargeter::endFrame(const CompositeResult& result) {
+    mCompositionCoverage = result.compositionCoverage;
+}
+
+FenceTimePtr FrameTargeter::setPresentFence(sp<Fence> presentFence) {
+    auto presentFenceTime = std::make_shared<FenceTime>(presentFence);
+    return setPresentFence(std::move(presentFence), std::move(presentFenceTime));
+}
+
+FenceTimePtr FrameTargeter::setPresentFence(sp<Fence> presentFence, FenceTimePtr presentFenceTime) {
+    mPresentFences[1] = mPresentFences[0];
+    mPresentFences[0] = {std::move(presentFence), presentFenceTime};
+    return presentFenceTime;
+}
+
+void FrameTargeter::dump(utils::Dumper& dumper) const {
+    using namespace std::string_view_literals;
+
+    utils::Dumper::Section section(dumper, "Frame Targeting"sv);
+
+    // There are scripts and tests that expect this (rather than "name=value") format.
+    dumper.dump({}, "Total missed frame count: " + std::to_string(mFrameMissedCount));
+    dumper.dump({}, "HWC missed frame count: " + std::to_string(mHwcFrameMissedCount));
+    dumper.dump({}, "GPU missed frame count: " + std::to_string(mGpuFrameMissedCount));
+}
+
+bool FrameTargeter::isFencePending(const FenceTimePtr& fence, int graceTimeMs) {
+    ATRACE_CALL();
+    const status_t status = fence->wait(graceTimeMs);
+
+    // This is the same as Fence::Status::Unsignaled, but it saves a call to getStatus,
+    // which calls wait(0) again internally.
+    return status == -ETIME;
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/tests/FrameTargeterTest.cpp b/services/surfaceflinger/Scheduler/tests/FrameTargeterTest.cpp
new file mode 100644
index 0000000..908f214
--- /dev/null
+++ b/services/surfaceflinger/Scheduler/tests/FrameTargeterTest.cpp
@@ -0,0 +1,301 @@
+/*
+ * Copyright 2023 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 <ftl/optional.h>
+#include <gtest/gtest.h>
+
+#include <scheduler/Fps.h>
+#include <scheduler/FrameTargeter.h>
+#include <scheduler/IVsyncSource.h>
+
+using namespace std::chrono_literals;
+
+namespace android::scheduler {
+namespace {
+
+struct VsyncSource final : IVsyncSource {
+    VsyncSource(Period period, TimePoint deadline) : vsyncPeriod(period), vsyncDeadline(deadline) {}
+
+    const Period vsyncPeriod;
+    const TimePoint vsyncDeadline;
+
+    Period period() const override { return vsyncPeriod; }
+    TimePoint vsyncDeadlineAfter(TimePoint) const override { return vsyncDeadline; }
+};
+
+} // namespace
+
+class FrameTargeterTest : public testing::Test {
+public:
+    const auto& target() const { return mTargeter.target(); }
+
+    struct Frame {
+        Frame(FrameTargeterTest* testPtr, VsyncId vsyncId, TimePoint& frameBeginTime,
+              Duration frameDuration, Fps refreshRate,
+              FrameTargeter::IsFencePendingFuncPtr isFencePendingFuncPtr = Frame::fenceSignaled,
+              const ftl::Optional<VsyncSource>& vsyncSourceOpt = std::nullopt)
+              : testPtr(testPtr), frameBeginTime(frameBeginTime), period(refreshRate.getPeriod()) {
+            const FrameTargeter::BeginFrameArgs args{.frameBeginTime = frameBeginTime,
+                                                     .vsyncId = vsyncId,
+                                                     .expectedVsyncTime =
+                                                             frameBeginTime + frameDuration,
+                                                     .sfWorkDuration = 10ms};
+
+            testPtr->mTargeter.beginFrame(args,
+                                          vsyncSourceOpt
+                                                  .or_else([&] {
+                                                      return std::make_optional(
+                                                              VsyncSource(period,
+                                                                          args.expectedVsyncTime));
+                                                  })
+                                                  .value(),
+                                          isFencePendingFuncPtr);
+        }
+
+        FenceTimePtr end(CompositionCoverage coverage = CompositionCoverage::Hwc) {
+            if (ended) return nullptr;
+            ended = true;
+
+            auto [fence, fenceTime] = testPtr->mFenceMap.makePendingFenceForTest();
+            testPtr->mTargeter.setPresentFence(std::move(fence), fenceTime);
+
+            testPtr->mTargeter.endFrame({.compositionCoverage = coverage});
+            return fenceTime;
+        }
+
+        ~Frame() {
+            end();
+            frameBeginTime += period;
+        }
+
+        static bool fencePending(const FenceTimePtr&, int) { return true; }
+        static bool fenceSignaled(const FenceTimePtr&, int) { return false; }
+
+        FrameTargeterTest* const testPtr;
+
+        TimePoint& frameBeginTime;
+        const Period period;
+
+        bool ended = false;
+    };
+
+private:
+    FenceToFenceTimeMap mFenceMap;
+
+    static constexpr bool kBackpressureGpuComposition = true;
+    FrameTargeter mTargeter{kBackpressureGpuComposition};
+};
+
+TEST_F(FrameTargeterTest, targetsFrames) {
+    VsyncId vsyncId{42};
+    {
+        TimePoint frameBeginTime(989ms);
+        const Frame frame(this, vsyncId++, frameBeginTime, 10ms, 60_Hz);
+
+        EXPECT_EQ(target().vsyncId(), VsyncId{42});
+        EXPECT_EQ(target().frameBeginTime(), TimePoint(989ms));
+        EXPECT_EQ(target().expectedPresentTime(), TimePoint(999ms));
+        EXPECT_EQ(target().expectedFrameDuration(), 10ms);
+    }
+    {
+        TimePoint frameBeginTime(1100ms);
+        const Frame frame(this, vsyncId++, frameBeginTime, 11ms, 60_Hz);
+
+        EXPECT_EQ(target().vsyncId(), VsyncId{43});
+        EXPECT_EQ(target().frameBeginTime(), TimePoint(1100ms));
+        EXPECT_EQ(target().expectedPresentTime(), TimePoint(1111ms));
+        EXPECT_EQ(target().expectedFrameDuration(), 11ms);
+    }
+}
+
+TEST_F(FrameTargeterTest, inflatesExpectedPresentTime) {
+    // Negative such that `expectedVsyncTime` is in the past.
+    constexpr Duration kFrameDuration = -3ms;
+    TimePoint frameBeginTime(777ms);
+
+    constexpr Fps kRefreshRate = 120_Hz;
+    const VsyncSource vsyncSource(kRefreshRate.getPeriod(), frameBeginTime + 5ms);
+    const Frame frame(this, VsyncId{123}, frameBeginTime, kFrameDuration, kRefreshRate,
+                      Frame::fenceSignaled, vsyncSource);
+
+    EXPECT_EQ(target().expectedPresentTime(), vsyncSource.vsyncDeadline + vsyncSource.vsyncPeriod);
+}
+
+TEST_F(FrameTargeterTest, recallsPastVsync) {
+    VsyncId vsyncId{111};
+    TimePoint frameBeginTime(1000ms);
+    constexpr Fps kRefreshRate = 60_Hz;
+    constexpr Period kPeriod = kRefreshRate.getPeriod();
+    constexpr Duration kFrameDuration = 13ms;
+
+    for (int n = 5; n-- > 0;) {
+        Frame frame(this, vsyncId++, frameBeginTime, kFrameDuration, kRefreshRate);
+        const auto fence = frame.end();
+
+        EXPECT_EQ(target().pastVsyncTime(kPeriod), frameBeginTime + kFrameDuration - kPeriod);
+        EXPECT_EQ(target().presentFenceForPastVsync(kPeriod), fence);
+    }
+}
+
+TEST_F(FrameTargeterTest, recallsPastVsyncTwoVsyncsAhead) {
+    VsyncId vsyncId{222};
+    TimePoint frameBeginTime(2000ms);
+    constexpr Fps kRefreshRate = 120_Hz;
+    constexpr Period kPeriod = kRefreshRate.getPeriod();
+    constexpr Duration kFrameDuration = 10ms;
+
+    FenceTimePtr previousFence = FenceTime::NO_FENCE;
+
+    for (int n = 5; n-- > 0;) {
+        Frame frame(this, vsyncId++, frameBeginTime, kFrameDuration, kRefreshRate);
+        const auto fence = frame.end();
+
+        EXPECT_EQ(target().pastVsyncTime(kPeriod), frameBeginTime + kFrameDuration - 2 * kPeriod);
+        EXPECT_EQ(target().presentFenceForPastVsync(kPeriod), previousFence);
+
+        previousFence = fence;
+    }
+}
+
+TEST_F(FrameTargeterTest, doesNotDetectEarlyPresentIfNoFence) {
+    constexpr Period kPeriod = (60_Hz).getPeriod();
+    EXPECT_EQ(target().presentFenceForPastVsync(kPeriod), FenceTime::NO_FENCE);
+    EXPECT_FALSE(target().wouldPresentEarly(kPeriod));
+}
+
+TEST_F(FrameTargeterTest, detectsEarlyPresent) {
+    VsyncId vsyncId{333};
+    TimePoint frameBeginTime(3000ms);
+    constexpr Fps kRefreshRate = 60_Hz;
+    constexpr Period kPeriod = kRefreshRate.getPeriod();
+
+    // The target is not early while past present fences are pending.
+    for (int n = 3; n-- > 0;) {
+        const Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+        EXPECT_FALSE(target().wouldPresentEarly(kPeriod));
+    }
+
+    // The target is early if the past present fence was signaled.
+    Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+    const auto fence = frame.end();
+    fence->signalForTest(frameBeginTime.ns());
+
+    EXPECT_TRUE(target().wouldPresentEarly(kPeriod));
+}
+
+TEST_F(FrameTargeterTest, detectsEarlyPresentTwoVsyncsAhead) {
+    VsyncId vsyncId{444};
+    TimePoint frameBeginTime(4000ms);
+    constexpr Fps kRefreshRate = 120_Hz;
+    constexpr Period kPeriod = kRefreshRate.getPeriod();
+
+    // The target is not early while past present fences are pending.
+    for (int n = 3; n-- > 0;) {
+        const Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+        EXPECT_FALSE(target().wouldPresentEarly(kPeriod));
+    }
+
+    Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+    const auto fence = frame.end();
+    fence->signalForTest(frameBeginTime.ns());
+
+    // The target is two VSYNCs ahead, so the past present fence is still pending.
+    EXPECT_FALSE(target().wouldPresentEarly(kPeriod));
+
+    { const Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate); }
+
+    // The target is early if the past present fence was signaled.
+    EXPECT_TRUE(target().wouldPresentEarly(kPeriod));
+}
+
+TEST_F(FrameTargeterTest, detectsEarlyPresentThreeVsyncsAhead) {
+    TimePoint frameBeginTime(5000ms);
+    constexpr Fps kRefreshRate = 144_Hz;
+    constexpr Period kPeriod = kRefreshRate.getPeriod();
+
+    const Frame frame(this, VsyncId{555}, frameBeginTime, 16ms, kRefreshRate);
+
+    // The target is more than two VSYNCs ahead, but present fences are not tracked that far back.
+    EXPECT_TRUE(target().wouldPresentEarly(kPeriod));
+}
+
+TEST_F(FrameTargeterTest, detectsMissedFrames) {
+    VsyncId vsyncId{555};
+    TimePoint frameBeginTime(5000ms);
+    constexpr Fps kRefreshRate = 60_Hz;
+    constexpr Period kPeriod = kRefreshRate.getPeriod();
+
+    EXPECT_FALSE(target().isFramePending());
+    EXPECT_FALSE(target().didMissFrame());
+    EXPECT_FALSE(target().didMissHwcFrame());
+
+    {
+        const Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+        EXPECT_FALSE(target().isFramePending());
+
+        // The frame did not miss if the past present fence is invalid.
+        EXPECT_FALSE(target().didMissFrame());
+        EXPECT_FALSE(target().didMissHwcFrame());
+    }
+    {
+        Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate, Frame::fencePending);
+        EXPECT_TRUE(target().isFramePending());
+
+        // The frame missed if the past present fence is pending.
+        EXPECT_TRUE(target().didMissFrame());
+        EXPECT_TRUE(target().didMissHwcFrame());
+
+        frame.end(CompositionCoverage::Gpu);
+    }
+    {
+        const Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate, Frame::fencePending);
+        EXPECT_TRUE(target().isFramePending());
+
+        // The GPU frame missed if the past present fence is pending.
+        EXPECT_TRUE(target().didMissFrame());
+        EXPECT_FALSE(target().didMissHwcFrame());
+    }
+    {
+        Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+        EXPECT_FALSE(target().isFramePending());
+
+        const auto fence = frame.end();
+        const auto expectedPresentTime = target().expectedPresentTime();
+        fence->signalForTest(expectedPresentTime.ns() + kPeriod.ns() / 2 + 1);
+    }
+    {
+        Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+        EXPECT_FALSE(target().isFramePending());
+
+        const auto fence = frame.end();
+        const auto expectedPresentTime = target().expectedPresentTime();
+        fence->signalForTest(expectedPresentTime.ns() + kPeriod.ns() / 2);
+
+        // The frame missed if the past present fence was signaled but not within slop.
+        EXPECT_TRUE(target().didMissFrame());
+        EXPECT_TRUE(target().didMissHwcFrame());
+    }
+    {
+        Frame frame(this, vsyncId++, frameBeginTime, 10ms, kRefreshRate);
+        EXPECT_FALSE(target().isFramePending());
+
+        // The frame did not miss if the past present fence was signaled within slop.
+        EXPECT_FALSE(target().didMissFrame());
+        EXPECT_FALSE(target().didMissHwcFrame());
+    }
+}
+
+} // namespace android::scheduler
diff --git a/services/surfaceflinger/Scheduler/tests/PresentLatencyTrackerTest.cpp b/services/surfaceflinger/Scheduler/tests/PresentLatencyTrackerTest.cpp
index 8952ca9..df2ea83 100644
--- a/services/surfaceflinger/Scheduler/tests/PresentLatencyTrackerTest.cpp
+++ b/services/surfaceflinger/Scheduler/tests/PresentLatencyTrackerTest.cpp
@@ -23,16 +23,6 @@
 #include <ui/FenceTime.h>
 
 namespace android::scheduler {
-namespace {
-
-using FencePair = std::pair<sp<Fence>, std::shared_ptr<FenceTime>>;
-
-FencePair makePendingFence(FenceToFenceTimeMap& fenceMap) {
-    const auto fence = sp<Fence>::make();
-    return {fence, fenceMap.createFenceTimeForTest(fence)};
-}
-
-} // namespace
 
 TEST(PresentLatencyTrackerTest, skipsInvalidFences) {
     PresentLatencyTracker tracker;
@@ -43,7 +33,7 @@
     EXPECT_EQ(tracker.trackPendingFrame(kCompositeTime, FenceTime::NO_FENCE), Duration::zero());
 
     FenceToFenceTimeMap fenceMap;
-    const auto [fence, fenceTime] = makePendingFence(fenceMap);
+    const auto [fence, fenceTime] = fenceMap.makePendingFenceForTest();
     EXPECT_EQ(tracker.trackPendingFrame(kCompositeTime, fenceTime), Duration::zero());
 
     fenceTime->signalForTest(9999);
@@ -56,8 +46,9 @@
     PresentLatencyTracker tracker;
 
     FenceToFenceTimeMap fenceMap;
-    std::array<FencePair, PresentLatencyTracker::kMaxPendingFrames> fences;
-    std::generate(fences.begin(), fences.end(), [&fenceMap] { return makePendingFence(fenceMap); });
+    std::array<FenceToFenceTimeMap::FencePair, PresentLatencyTracker::kMaxPendingFrames> fences;
+    std::generate(fences.begin(), fences.end(),
+                  [&fenceMap] { return fenceMap.makePendingFenceForTest(); });
 
     // The present latency is 0 if all fences are pending.
     const TimePoint kCompositeTime = TimePoint::fromNs(1234);
@@ -71,7 +62,7 @@
         fences[i].second->signalForTest(kCompositeTime.ns() + static_cast<nsecs_t>(i));
     }
 
-    const auto fence = makePendingFence(fenceMap);
+    const auto fence = fenceMap.makePendingFenceForTest();
 
     // ...then the present latency is measured using the latest frame.
     constexpr Duration kPresentLatency = Duration::fromNs(static_cast<nsecs_t>(kPresentCount) - 1);
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index ee5251a..b494529 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -77,6 +77,7 @@
 #include <processgroup/processgroup.h>
 #include <renderengine/RenderEngine.h>
 #include <renderengine/impl/ExternalTexture.h>
+#include <scheduler/FrameTargeter.h>
 #include <sys/types.h>
 #include <ui/ColorSpace.h>
 #include <ui/DataspaceUtils.h>
@@ -116,7 +117,6 @@
 #include "Client.h"
 #include "ClientCache.h"
 #include "Colorizer.h"
-#include "Display/DisplayMap.h"
 #include "DisplayDevice.h"
 #include "DisplayHardware/ComposerHal.h"
 #include "DisplayHardware/FramebufferSurface.h"
@@ -910,6 +910,29 @@
         ALOGE("Run StartPropertySetThread failed!");
     }
 
+    if (mTransactionTracing) {
+        TransactionTraceWriter::getInstance().setWriterFunction([&](const std::string& prefix,
+                                                                    bool overwrite) {
+            auto writeFn = [&]() {
+                const std::string filename =
+                        TransactionTracing::DIR_NAME + prefix + TransactionTracing::FILE_NAME;
+                if (overwrite) {
+                    std::ifstream file(filename);
+                    if (file.is_open()) {
+                        return;
+                    }
+                }
+                mTransactionTracing->flush();
+                mTransactionTracing->writeToFile(filename);
+            };
+            if (std::this_thread::get_id() == mMainThreadId) {
+                writeFn();
+            } else {
+                mScheduler->schedule(writeFn).get();
+            }
+        });
+    }
+
     ALOGV("Done initializing");
 }
 
@@ -2140,64 +2163,6 @@
     }
 }
 
-void SurfaceFlinger::setVsyncEnabled(PhysicalDisplayId id, bool enabled) {
-    const char* const whence = __func__;
-    ATRACE_FORMAT("%s (%d) for %" PRIu64, whence, enabled, id.value);
-
-    // On main thread to avoid race conditions with display power state.
-    static_cast<void>(mScheduler->schedule([=]() FTL_FAKE_GUARD(mStateLock) {
-        {
-            ftl::FakeGuard guard(kMainThreadContext);
-            if (auto schedule = mScheduler->getVsyncSchedule(id)) {
-                schedule->setPendingHardwareVsyncState(enabled);
-            }
-        }
-
-        ATRACE_FORMAT("%s (%d) for %" PRIu64 " (main thread)", whence, enabled, id.value);
-        if (const auto display = getDisplayDeviceLocked(id); display && display->isPoweredOn()) {
-            setHWCVsyncEnabled(id, enabled);
-        }
-    }));
-}
-
-bool SurfaceFlinger::wouldPresentEarly(TimePoint frameTime, Period vsyncPeriod) const {
-    const bool isThreeVsyncsAhead = mExpectedPresentTime - frameTime > 2 * vsyncPeriod;
-    return isThreeVsyncsAhead ||
-            getPreviousPresentFence(frameTime, vsyncPeriod)->getSignalTime() !=
-            Fence::SIGNAL_TIME_PENDING;
-}
-
-auto SurfaceFlinger::getPreviousPresentFence(TimePoint frameTime, Period vsyncPeriod) const
-        -> const FenceTimePtr& {
-    const bool isTwoVsyncsAhead = mExpectedPresentTime - frameTime > vsyncPeriod;
-    const size_t i = static_cast<size_t>(isTwoVsyncsAhead);
-    return mPreviousPresentFences[i].fenceTime;
-}
-
-bool SurfaceFlinger::isFencePending(const FenceTimePtr& fence, int graceTimeMs) {
-    ATRACE_CALL();
-    if (fence == FenceTime::NO_FENCE) {
-        return false;
-    }
-
-    const status_t status = fence->wait(graceTimeMs);
-    // This is the same as Fence::Status::Unsignaled, but it saves a getStatus() call,
-    // which calls wait(0) again internally
-    return status == -ETIME;
-}
-
-TimePoint SurfaceFlinger::calculateExpectedPresentTime(TimePoint frameTime) const {
-    const auto& schedule = mScheduler->getVsyncSchedule();
-
-    const TimePoint vsyncDeadline = schedule->vsyncDeadlineAfter(frameTime);
-    if (mScheduler->vsyncModulator().getVsyncConfig().sfOffset > 0) {
-        return vsyncDeadline;
-    }
-
-    // Inflate the expected present time if we're targeting the next vsync.
-    return vsyncDeadline + schedule->period();
-}
-
 void SurfaceFlinger::configure() FTL_FAKE_GUARD(kMainThreadContext) {
     Mutex::Autolock lock(mStateLock);
     if (configureLocked()) {
@@ -2371,75 +2336,15 @@
     return mustComposite;
 }
 
-bool SurfaceFlinger::commit(TimePoint frameTime, VsyncId vsyncId, TimePoint expectedVsyncTime)
+bool SurfaceFlinger::commit(const scheduler::FrameTarget& pacesetterFrameTarget)
         FTL_FAKE_GUARD(kMainThreadContext) {
-    // The expectedVsyncTime, which was predicted when this frame was scheduled, is normally in the
-    // future relative to frameTime, but may not be for delayed frames. Adjust mExpectedPresentTime
-    // accordingly, but not mScheduledPresentTime.
-    const TimePoint lastScheduledPresentTime = mScheduledPresentTime;
-    mScheduledPresentTime = expectedVsyncTime;
+    const VsyncId vsyncId = pacesetterFrameTarget.vsyncId();
+    ATRACE_NAME(ftl::Concat(__func__, ' ', ftl::to_underlying(vsyncId)).c_str());
 
-    // Calculate the expected present time once and use the cached value throughout this frame to
-    // make sure all layers are seeing this same value.
-    mExpectedPresentTime = expectedVsyncTime >= frameTime ? expectedVsyncTime
-                                                          : calculateExpectedPresentTime(frameTime);
-
-    ATRACE_FORMAT("%s %" PRId64 " vsyncIn %.2fms%s", __func__, vsyncId.value,
-                  ticks<std::milli, float>(mExpectedPresentTime - TimePoint::now()),
-                  mExpectedPresentTime == expectedVsyncTime ? "" : " (adjusted)");
-
-    const Period vsyncPeriod = mScheduler->getVsyncSchedule()->period();
-    const FenceTimePtr& previousPresentFence = getPreviousPresentFence(frameTime, vsyncPeriod);
-
-    // When backpressure propagation is enabled, we want to give a small grace period of 1ms
-    // for the present fence to fire instead of just giving up on this frame to handle cases
-    // where present fence is just about to get signaled.
-    const int graceTimeForPresentFenceMs = static_cast<int>(
-            mBackpressureGpuComposition || !mCompositionCoverage.test(CompositionCoverage::Gpu));
-
-    // Pending frames may trigger backpressure propagation.
-    const TracedOrdinal<bool> framePending = {"PrevFramePending",
-                                              isFencePending(previousPresentFence,
-                                                             graceTimeForPresentFenceMs)};
-
-    // Frame missed counts for metrics tracking.
-    // A frame is missed if the prior frame is still pending. If no longer pending,
-    // then we still count the frame as missed if the predicted present time
-    // was further in the past than when the fence actually fired.
-
-    // Add some slop to correct for drift. This should generally be
-    // smaller than a typical frame duration, but should not be so small
-    // that it reports reasonable drift as a missed frame.
-    const nsecs_t frameMissedSlop = vsyncPeriod.ns() / 2;
-    const nsecs_t previousPresentTime = previousPresentFence->getSignalTime();
-    const TracedOrdinal<bool> frameMissed = {"PrevFrameMissed",
-                                             framePending ||
-                                                     (previousPresentTime >= 0 &&
-                                                      (lastScheduledPresentTime.ns() <
-                                                       previousPresentTime - frameMissedSlop))};
-    const TracedOrdinal<bool> hwcFrameMissed = {"PrevHwcFrameMissed",
-                                                frameMissed &&
-                                                        mCompositionCoverage.test(
-                                                                CompositionCoverage::Hwc)};
-
-    const TracedOrdinal<bool> gpuFrameMissed = {"PrevGpuFrameMissed",
-                                                frameMissed &&
-                                                        mCompositionCoverage.test(
-                                                                CompositionCoverage::Gpu)};
-
-    if (frameMissed) {
-        mFrameMissedCount++;
+    if (pacesetterFrameTarget.didMissFrame()) {
         mTimeStats->incrementMissedFrames();
     }
 
-    if (hwcFrameMissed) {
-        mHwcFrameMissedCount++;
-    }
-
-    if (gpuFrameMissed) {
-        mGpuFrameMissedCount++;
-    }
-
     if (mTracingEnabledChanged) {
         mLayerTracingEnabled = mLayerTracing.isEnabled();
         mTracingEnabledChanged = false;
@@ -2448,7 +2353,7 @@
     // If we are in the middle of a mode change and the fence hasn't
     // fired yet just wait for the next commit.
     if (mSetActiveModePending) {
-        if (framePending) {
+        if (pacesetterFrameTarget.isFramePending()) {
             mScheduler->scheduleFrame();
             return false;
         }
@@ -2462,26 +2367,29 @@
         }
     }
 
-    if (framePending) {
-        if (mBackpressureGpuComposition || (hwcFrameMissed && !gpuFrameMissed)) {
+    if (pacesetterFrameTarget.isFramePending()) {
+        if (mBackpressureGpuComposition || pacesetterFrameTarget.didMissHwcFrame()) {
             scheduleCommit(FrameHint::kNone);
             return false;
         }
     }
 
+    const Period vsyncPeriod = mScheduler->getVsyncSchedule()->period();
+
     // 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(mActiveDisplayId));
     mPowerHintSessionEnabled = mPowerAdvisor->usePowerHintSession() && activeDisplay &&
             activeDisplay->getPowerMode() == hal::PowerMode::ON;
     if (mPowerHintSessionEnabled) {
-        mPowerAdvisor->setCommitStart(frameTime);
-        mPowerAdvisor->setExpectedPresentTime(mExpectedPresentTime);
+        mPowerAdvisor->setCommitStart(pacesetterFrameTarget.frameBeginTime());
+        mPowerAdvisor->setExpectedPresentTime(pacesetterFrameTarget.expectedPresentTime());
 
         // Frame delay is how long we should have minus how long we actually have.
         const Duration idealSfWorkDuration =
                 mScheduler->vsyncModulator().getVsyncConfig().sfWorkDuration;
-        const Duration frameDelay = idealSfWorkDuration - (mExpectedPresentTime - frameTime);
+        const Duration frameDelay =
+                idealSfWorkDuration - pacesetterFrameTarget.expectedFrameDuration();
 
         mPowerAdvisor->setFrameDelay(frameDelay);
         mPowerAdvisor->setTotalFrameTargetWorkDuration(idealSfWorkDuration);
@@ -2501,7 +2409,8 @@
     // Composite if transactions were committed, or if requested by HWC.
     bool mustComposite = mMustComposite.exchange(false);
     {
-        mFrameTimeline->setSfWakeUp(vsyncId.value, frameTime.ns(),
+        mFrameTimeline->setSfWakeUp(ftl::to_underlying(vsyncId),
+                                    pacesetterFrameTarget.frameBeginTime().ns(),
                                     Fps::fromPeriodNsecs(vsyncPeriod.ns()));
 
         const bool flushTransactions = clearTransactionFlags(eTransactionFlushNeeded);
@@ -2509,9 +2418,11 @@
         if (flushTransactions) {
             updates = flushLifecycleUpdates();
             if (mTransactionTracing) {
-                mTransactionTracing->addCommittedTransactions(vsyncId.value, frameTime.ns(),
-                                                              updates, mFrontEndDisplayInfos,
-                                                              mFrontEndDisplayInfosChanged);
+                mTransactionTracing
+                        ->addCommittedTransactions(ftl::to_underlying(vsyncId),
+                                                   pacesetterFrameTarget.frameBeginTime().ns(),
+                                                   updates, mFrontEndDisplayInfos,
+                                                   mFrontEndDisplayInfosChanged);
             }
         }
         bool transactionsAreEmpty;
@@ -2550,11 +2461,11 @@
     }
 
     updateCursorAsync();
-    updateInputFlinger(vsyncId, frameTime);
+    updateInputFlinger(vsyncId, pacesetterFrameTarget.frameBeginTime());
 
     if (mLayerTracingEnabled && !mLayerTracing.flagIsSet(LayerTracing::TRACE_COMPOSITION)) {
         // This will block and tracing should only be enabled for debugging.
-        addToLayerTracing(mVisibleRegionsDirty, frameTime.ns(), vsyncId.value);
+        addToLayerTracing(mVisibleRegionsDirty, pacesetterFrameTarget.frameBeginTime(), vsyncId);
     }
     mLastCommittedVsyncId = vsyncId;
 
@@ -2563,9 +2474,12 @@
     return mustComposite && CC_LIKELY(mBootStage != BootStage::BOOTLOADER);
 }
 
-void SurfaceFlinger::composite(TimePoint frameTime, VsyncId vsyncId)
+CompositeResult SurfaceFlinger::composite(scheduler::FrameTargeter& pacesetterFrameTargeter)
         FTL_FAKE_GUARD(kMainThreadContext) {
-    ATRACE_FORMAT("%s %" PRId64, __func__, vsyncId.value);
+    const scheduler::FrameTarget& pacesetterFrameTarget = pacesetterFrameTargeter.target();
+
+    const VsyncId vsyncId = pacesetterFrameTarget.vsyncId();
+    ATRACE_NAME(ftl::Concat(__func__, ' ', ftl::to_underlying(vsyncId)).c_str());
 
     compositionengine::CompositionRefreshArgs refreshArgs;
     refreshArgs.powerCallback = this;
@@ -2573,17 +2487,18 @@
     refreshArgs.outputs.reserve(displays.size());
     std::vector<DisplayId> displayIds;
     for (const auto& [_, display] : displays) {
-        bool dropFrame = false;
-        if (display->isVirtual()) {
-            Fps refreshRate = display->getAdjustedRefreshRate();
-            using fps_approx_ops::operator>;
-            dropFrame = (refreshRate > 0_Hz) && !mScheduler->isVsyncInPhase(frameTime, refreshRate);
-        }
-        if (!dropFrame) {
-            refreshArgs.outputs.push_back(display->getCompositionDisplay());
-        }
-        display->tracePowerMode();
         displayIds.push_back(display->getId());
+        display->tracePowerMode();
+
+        if (display->isVirtual()) {
+            const Fps refreshRate = display->getAdjustedRefreshRate();
+            if (refreshRate.isValid() &&
+                !mScheduler->isVsyncInPhase(pacesetterFrameTarget.frameBeginTime(), refreshRate)) {
+                continue;
+            }
+        }
+
+        refreshArgs.outputs.push_back(display->getCompositionDisplay());
     }
     mPowerAdvisor->setDisplays(displayIds);
 
@@ -2643,23 +2558,24 @@
 
     if (!getHwComposer().getComposer()->isSupported(
                 Hwc2::Composer::OptionalFeature::ExpectedPresentTime) &&
-        wouldPresentEarly(frameTime, vsyncPeriod)) {
-        const auto prevVsyncTime = mExpectedPresentTime - vsyncPeriod;
+        pacesetterFrameTarget.wouldPresentEarly(vsyncPeriod)) {
         const auto hwcMinWorkDuration = mVsyncConfiguration->getCurrentConfigs().hwcMinWorkDuration;
 
-        refreshArgs.earliestPresentTime = prevVsyncTime - hwcMinWorkDuration;
+        refreshArgs.earliestPresentTime =
+                pacesetterFrameTarget.previousFrameVsyncTime(vsyncPeriod) - hwcMinWorkDuration;
     }
 
     refreshArgs.scheduledFrameTime = mScheduler->getScheduledFrameTime();
-    refreshArgs.expectedPresentTime = mExpectedPresentTime.ns();
+    refreshArgs.expectedPresentTime = pacesetterFrameTarget.expectedPresentTime().ns();
     refreshArgs.hasTrustedPresentationListener = mNumTrustedPresentationListeners > 0;
 
     // Store the present time just before calling to the composition engine so we could notify
     // the scheduler.
     const auto presentTime = systemTime();
 
-    std::vector<std::pair<Layer*, LayerFE*>> layers =
-            moveSnapshotsToCompositionArgs(refreshArgs, /*cursorOnly=*/false, vsyncId.value);
+    constexpr bool kCursorOnly = false;
+    const auto layers = moveSnapshotsToCompositionArgs(refreshArgs, kCursorOnly);
+
     mCompositionEngine->present(refreshArgs);
     moveSnapshotsFromCompositionArgs(refreshArgs, layers);
 
@@ -2676,14 +2592,14 @@
         }
     }
 
-    mTimeStats->recordFrameDuration(frameTime.ns(), systemTime());
+    mTimeStats->recordFrameDuration(pacesetterFrameTarget.frameBeginTime().ns(), systemTime());
 
     // Send a power hint after presentation is finished.
     if (mPowerHintSessionEnabled) {
         // Now that the current frame has been presented above, PowerAdvisor needs the present time
         // of the previous frame (whose fence is signaled by now) to determine how long the HWC had
         // waited on that fence to retire before presenting.
-        const auto& previousPresentFence = mPreviousPresentFences[0].fenceTime;
+        const auto& previousPresentFence = pacesetterFrameTarget.presentFenceForPreviousFrame();
 
         mPowerAdvisor->setSfPresentTiming(TimePoint::fromNs(previousPresentFence->getSignalTime()),
                                           TimePoint::now());
@@ -2694,7 +2610,7 @@
         scheduleComposite(FrameHint::kNone);
     }
 
-    postComposition(presentTime);
+    postComposition(pacesetterFrameTargeter, presentTime);
 
     const bool hadGpuComposited = mCompositionCoverage.test(CompositionCoverage::Gpu);
     mCompositionCoverage.clear();
@@ -2737,7 +2653,7 @@
     mLayersWithQueuedFrames.clear();
     if (mLayerTracingEnabled && mLayerTracing.flagIsSet(LayerTracing::TRACE_COMPOSITION)) {
         // This will block and should only be used for debugging.
-        addToLayerTracing(mVisibleRegionsDirty, frameTime.ns(), vsyncId.value);
+        addToLayerTracing(mVisibleRegionsDirty, pacesetterFrameTarget.frameBeginTime(), vsyncId);
     }
 
     if (mVisibleRegionsDirty) mHdrLayerInfoChanged = true;
@@ -2750,6 +2666,8 @@
     if (mPowerHintSessionEnabled) {
         mPowerAdvisor->setCompositeEnd(TimePoint::now());
     }
+
+    return {mCompositionCoverage};
 }
 
 void SurfaceFlinger::updateLayerGeometry() {
@@ -2833,7 +2751,8 @@
     return ui::ROTATION_0;
 }
 
-void SurfaceFlinger::postComposition(nsecs_t callTime) {
+void SurfaceFlinger::postComposition(scheduler::FrameTargeter& pacesetterFrameTargeter,
+                                     nsecs_t presentStartTime) {
     ATRACE_CALL();
     ALOGV(__func__);
 
@@ -2850,15 +2769,11 @@
         glCompositionDoneFenceTime = FenceTime::NO_FENCE;
     }
 
-    mPreviousPresentFences[1] = mPreviousPresentFences[0];
-
     auto presentFence = defaultDisplay
             ? getHwComposer().getPresentFence(defaultDisplay->getPhysicalId())
             : Fence::NO_FENCE;
 
-    auto presentFenceTime = std::make_shared<FenceTime>(presentFence);
-    mPreviousPresentFences[0] = {presentFence, presentFenceTime};
-
+    auto presentFenceTime = pacesetterFrameTargeter.setPresentFence(presentFence);
     const TimePoint presentTime = TimePoint::now();
 
     // Set presentation information before calling Layer::releasePendingBuffer, such that jank
@@ -2884,7 +2799,7 @@
     const CompositorTiming compositorTiming(vsyncDeadline.ns(), vsyncPeriod.ns(), vsyncPhase,
                                             presentLatency.ns());
 
-    display::DisplayMap<ui::LayerStack, const DisplayDevice*> layerStackToDisplay;
+    ui::DisplayMap<ui::LayerStack, const DisplayDevice*> layerStackToDisplay;
     {
         if (!mLayersWithBuffersRemoved.empty() || mNumTrustedPresentationListeners > 0) {
             Mutex::Autolock lock(mStateLock);
@@ -3041,7 +2956,7 @@
             if (!layer->hasTrustedPresentationListener()) {
                 return;
             }
-            const frontend::LayerSnapshot* snapshot = (mLayerLifecycleManagerEnabled)
+            const frontend::LayerSnapshot* snapshot = mLayerLifecycleManagerEnabled
                     ? mLayerSnapshotBuilder.getSnapshot(layer->sequence)
                     : layer->getLayerSnapshot();
             std::optional<const DisplayDevice*> displayOpt = std::nullopt;
@@ -3050,7 +2965,8 @@
             }
             const DisplayDevice* display = displayOpt.value_or(nullptr);
             layer->updateTrustedPresentationState(display, snapshot,
-                                                  nanoseconds_to_milliseconds(callTime), false);
+                                                  nanoseconds_to_milliseconds(presentStartTime),
+                                                  false);
         });
     }
 
@@ -3783,7 +3699,8 @@
             mWindowInfosListenerInvoker
                     ->windowInfosChanged(gui::WindowInfosUpdate{std::move(windowInfos),
                                                                 std::move(displayInfos),
-                                                                vsyncId.value, frameTime.ns()},
+                                                                ftl::to_underlying(vsyncId),
+                                                                frameTime.ns()},
                                          std::move(
                                                  inputWindowCommands.windowInfosReportedListeners),
                                          /* forceImmediateCall= */ visibleWindowsChanged ||
@@ -3873,11 +3790,17 @@
             refreshArgs.outputs.push_back(display->getCompositionDisplay());
         }
     }
-    auto layers = moveSnapshotsToCompositionArgs(refreshArgs, /*cursorOnly=*/true, 0);
+
+    constexpr bool kCursorOnly = true;
+    const auto layers = moveSnapshotsToCompositionArgs(refreshArgs, kCursorOnly);
     mCompositionEngine->updateCursorAsync(refreshArgs);
     moveSnapshotsFromCompositionArgs(refreshArgs, layers);
 }
 
+void SurfaceFlinger::requestHardwareVsync(PhysicalDisplayId displayId, bool enable) {
+    getHwComposer().setVsyncEnabled(displayId, enable ? hal::Vsync::ENABLE : hal::Vsync::DISABLE);
+}
+
 void SurfaceFlinger::requestDisplayModes(std::vector<display::DisplayModeRequest> modeRequests) {
     if (mBootStage != BootStage::FINISHED) {
         ALOGV("Currently in the boot stage, skipping display mode changes");
@@ -3958,6 +3881,9 @@
     if (display->refreshRateSelector().kernelIdleTimerController()) {
         features |= Feature::kKernelIdleTimer;
     }
+    if (mBackpressureGpuComposition) {
+        features |= Feature::kBackpressureGpuComposition;
+    }
 
     auto modulatorPtr = sp<VsyncModulator>::make(mVsyncConfiguration->getCurrentConfigs());
 
@@ -3965,8 +3891,6 @@
                                              static_cast<ISchedulerCallback&>(*this), features,
                                              std::move(modulatorPtr));
     mScheduler->registerDisplay(display->getPhysicalId(), display->holdRefreshRateSelector());
-
-    setVsyncEnabled(display->getPhysicalId(), false);
     mScheduler->startTimers();
 
     const auto configs = mVsyncConfiguration->getCurrentConfigs();
@@ -4277,33 +4201,38 @@
 
 TransactionHandler::TransactionReadiness SurfaceFlinger::transactionReadyTimelineCheck(
         const TransactionHandler::TransactionFlushState& flushState) {
-    using TransactionReadiness = TransactionHandler::TransactionReadiness;
     const auto& transaction = *flushState.transaction;
-    TimePoint desiredPresentTime = TimePoint::fromNs(transaction.desiredPresentTime);
+
+    const TimePoint desiredPresentTime = TimePoint::fromNs(transaction.desiredPresentTime);
+    const TimePoint expectedPresentTime = mScheduler->pacesetterFrameTarget().expectedPresentTime();
+
+    using TransactionReadiness = TransactionHandler::TransactionReadiness;
+
     // Do not present if the desiredPresentTime has not passed unless it is more than
     // one second in the future. We ignore timestamps more than 1 second in the future
     // for stability reasons.
-    if (!transaction.isAutoTimestamp && desiredPresentTime >= mExpectedPresentTime &&
-        desiredPresentTime < mExpectedPresentTime + 1s) {
+    if (!transaction.isAutoTimestamp && desiredPresentTime >= expectedPresentTime &&
+        desiredPresentTime < expectedPresentTime + 1s) {
         ATRACE_FORMAT("not current desiredPresentTime: %" PRId64 " expectedPresentTime: %" PRId64,
-                      desiredPresentTime, mExpectedPresentTime);
+                      desiredPresentTime, expectedPresentTime);
         return TransactionReadiness::NotReady;
     }
 
-    if (!mScheduler->isVsyncValid(mExpectedPresentTime, transaction.originUid)) {
-        ATRACE_FORMAT("!isVsyncValid expectedPresentTime: %" PRId64 " uid: %d",
-                      mExpectedPresentTime, transaction.originUid);
+    if (!mScheduler->isVsyncValid(expectedPresentTime, transaction.originUid)) {
+        ATRACE_FORMAT("!isVsyncValid expectedPresentTime: %" PRId64 " uid: %d", expectedPresentTime,
+                      transaction.originUid);
         return TransactionReadiness::NotReady;
     }
 
     // If the client didn't specify desiredPresentTime, use the vsyncId to determine the
     // expected present time of this transaction.
     if (transaction.isAutoTimestamp &&
-        frameIsEarly(mExpectedPresentTime, VsyncId{transaction.frameTimelineInfo.vsyncId})) {
+        frameIsEarly(expectedPresentTime, VsyncId{transaction.frameTimelineInfo.vsyncId})) {
         ATRACE_FORMAT("frameIsEarly vsyncId: %" PRId64 " expectedPresentTime: %" PRId64,
-                      transaction.frameTimelineInfo.vsyncId, mExpectedPresentTime);
+                      transaction.frameTimelineInfo.vsyncId, expectedPresentTime);
         return TransactionReadiness::NotReady;
     }
+
     return TransactionReadiness::Ready;
 }
 
@@ -4442,7 +4371,7 @@
 
 bool SurfaceFlinger::frameIsEarly(TimePoint expectedPresentTime, VsyncId vsyncId) const {
     const auto prediction =
-            mFrameTimeline->getTokenManager()->getPredictionsForToken(vsyncId.value);
+            mFrameTimeline->getTokenManager()->getPredictionsForToken(ftl::to_underlying(vsyncId));
     if (!prediction) {
         return false;
     }
@@ -4463,26 +4392,27 @@
 bool SurfaceFlinger::shouldLatchUnsignaled(const sp<Layer>& layer, const layer_state_t& state,
                                            size_t numStates, bool firstTransaction) const {
     if (enableLatchUnsignaledConfig == LatchUnsignaledConfig::Disabled) {
-        ALOGV("%s: false (LatchUnsignaledConfig::Disabled)", __func__);
+        ATRACE_FORMAT_INSTANT("%s: false (LatchUnsignaledConfig::Disabled)", __func__);
         return false;
     }
 
     if (enableLatchUnsignaledConfig == LatchUnsignaledConfig::Always) {
-        ALOGV("%s: true (LatchUnsignaledConfig::Always)", __func__);
+        ATRACE_FORMAT_INSTANT("%s: true (LatchUnsignaledConfig::Always)", __func__);
         return true;
     }
 
     // We only want to latch unsignaled when a single layer is updated in this
     // transaction (i.e. not a blast sync transaction).
     if (numStates != 1) {
-        ALOGV("%s: false (numStates=%zu)", __func__, numStates);
+        ATRACE_FORMAT_INSTANT("%s: false (numStates=%zu)", __func__, numStates);
         return false;
     }
 
     if (enableLatchUnsignaledConfig == LatchUnsignaledConfig::AutoSingleLayer) {
         if (!firstTransaction) {
-            ALOGV("%s: false (LatchUnsignaledConfig::AutoSingleLayer; not first transaction)",
-                  __func__);
+            ATRACE_FORMAT_INSTANT("%s: false (LatchUnsignaledConfig::AutoSingleLayer; not first "
+                                  "transaction)",
+                                  __func__);
             return false;
         }
 
@@ -4490,19 +4420,14 @@
         // as it leads to jank due to RenderEngine waiting for unsignaled buffer
         // or window animations being slow.
         if (mScheduler->vsyncModulator().isVsyncConfigEarly()) {
-            ALOGV("%s: false (LatchUnsignaledConfig::AutoSingleLayer; isVsyncConfigEarly)",
-                  __func__);
+            ATRACE_FORMAT_INSTANT("%s: false (LatchUnsignaledConfig::AutoSingleLayer; "
+                                  "isVsyncConfigEarly)",
+                                  __func__);
             return false;
         }
     }
 
-    if (!layer->simpleBufferUpdate(state)) {
-        ALOGV("%s: false (!simpleBufferUpdate)", __func__);
-        return false;
-    }
-
-    ALOGV("%s: true", __func__);
-    return true;
+    return layer->isSimpleBufferUpdate(state);
 }
 
 status_t SurfaceFlinger::setTransactionState(
@@ -5527,11 +5452,14 @@
 
         getHwComposer().setPowerMode(displayId, mode);
         if (displayId == mActiveDisplayId && mode != hal::PowerMode::DOZE_SUSPEND) {
-            setHWCVsyncEnabled(displayId,
-                               mScheduler->getVsyncSchedule(displayId)
-                                       ->getPendingHardwareVsyncState());
+            const bool enable =
+                    mScheduler->getVsyncSchedule(displayId)->getPendingHardwareVsyncState();
+            requestHardwareVsync(displayId, enable);
+
             mScheduler->enableSyntheticVsync(false);
-            mScheduler->resyncToHardwareVsync(displayId, true /* allowToEnable */, refreshRate);
+
+            constexpr bool kAllowToEnable = true;
+            mScheduler->resyncToHardwareVsync(displayId, kAllowToEnable, refreshRate);
         }
 
         mVisibleRegionsDirty = true;
@@ -5555,10 +5483,10 @@
             }
         }
 
-        // Make sure HWVsync is disabled before turning off the display
-        setHWCVsyncEnabled(displayId, false);
-
+        // Disable VSYNC before turning off the display.
+        requestHardwareVsync(displayId, false);
         getHwComposer().setPowerMode(displayId, mode);
+
         mVisibleRegionsDirty = true;
         // from this point on, SF will stop drawing on this display
     } else if (mode == hal::PowerMode::DOZE || mode == hal::PowerMode::ON) {
@@ -5586,9 +5514,10 @@
     if (displayId == mActiveDisplayId) {
         mTimeStats->setPowerMode(mode);
         mRefreshRateStats->setPowerMode(mode);
-        mScheduler->setDisplayPowerMode(displayId, mode);
     }
 
+    mScheduler->setDisplayPowerMode(displayId, mode);
+
     ALOGD("Finished setting power mode %d on display %s", mode, to_string(displayId).c_str());
 }
 
@@ -6043,10 +5972,6 @@
     dumpVsync(result);
     result.append("\n");
 
-    StringAppendF(&result, "Total missed frame count: %u\n", mFrameMissedCount.load());
-    StringAppendF(&result, "HWC missed frame count: %u\n", mHwcFrameMissedCount.load());
-    StringAppendF(&result, "GPU missed frame count: %u\n\n", mGpuFrameMissedCount.load());
-
     /*
      * Dump the visible layer list
      */
@@ -6160,7 +6085,7 @@
     result.append("Window Infos:\n");
     auto windowInfosDebug = mWindowInfosListenerInvoker->getDebugInfo();
     StringAppendF(&result, "  max send vsync id: %" PRId64 "\n",
-                  windowInfosDebug.maxSendDelayVsyncId.value);
+                  ftl::to_underlying(windowInfosDebug.maxSendDelayVsyncId));
     StringAppendF(&result, "  max send delay (ns): %" PRId64 " ns\n",
                   windowInfosDebug.maxSendDelayDuration);
     StringAppendF(&result, "  unsent messages: %" PRIu32 "\n",
@@ -6480,13 +6405,16 @@
                     ALOGD("LayerTracing enabled");
                     tracingEnabledChanged = mLayerTracing.enable();
                     if (tracingEnabledChanged) {
-                        int64_t startingTime =
-                                (fixedStartingTime) ? fixedStartingTime : systemTime();
+                        const TimePoint startingTime = fixedStartingTime
+                                ? TimePoint::fromNs(fixedStartingTime)
+                                : TimePoint::now();
+
                         mScheduler
-                                ->schedule([&]() FTL_FAKE_GUARD(mStateLock) FTL_FAKE_GUARD(
-                                                   kMainThreadContext) {
-                                    addToLayerTracing(true /* visibleRegionDirty */, startingTime,
-                                                      mLastCommittedVsyncId.value);
+                                ->schedule([this, startingTime]() FTL_FAKE_GUARD(
+                                                   mStateLock) FTL_FAKE_GUARD(kMainThreadContext) {
+                                    constexpr bool kVisibleRegionDirty = true;
+                                    addToLayerTracing(kVisibleRegionDirty, startingTime,
+                                                      mLastCommittedVsyncId);
                                 })
                                 .wait();
                     }
@@ -6744,7 +6672,7 @@
                         mTransactionTracing->setBufferSize(
                                 TransactionTracing::ACTIVE_TRACING_BUFFER_SIZE);
                     } else {
-                        mTransactionTracing->writeToFile();
+                        TransactionTraceWriter::getInstance().invoke("", /* overwrite= */ true);
                         mTransactionTracing->setBufferSize(
                                 TransactionTracing::CONTINUOUS_TRACING_BUFFER_SIZE);
                     }
@@ -8143,7 +8071,7 @@
 
 void SurfaceFlinger::moveSnapshotsFromCompositionArgs(
         compositionengine::CompositionRefreshArgs& refreshArgs,
-        std::vector<std::pair<Layer*, LayerFE*>>& layers) {
+        const std::vector<std::pair<Layer*, LayerFE*>>& layers) {
     if (mLayerLifecycleManagerEnabled) {
         std::vector<std::unique_ptr<frontend::LayerSnapshot>>& snapshots =
                 mLayerSnapshotBuilder.getSnapshots();
@@ -8160,7 +8088,7 @@
 }
 
 std::vector<std::pair<Layer*, LayerFE*>> SurfaceFlinger::moveSnapshotsToCompositionArgs(
-        compositionengine::CompositionRefreshArgs& refreshArgs, bool cursorOnly, int64_t vsyncId) {
+        compositionengine::CompositionRefreshArgs& refreshArgs, bool cursorOnly) {
     std::vector<std::pair<Layer*, LayerFE*>> layers;
     if (mLayerLifecycleManagerEnabled) {
         nsecs_t currentTime = systemTime();
@@ -8360,7 +8288,7 @@
     return update;
 }
 
-void SurfaceFlinger::addToLayerTracing(bool visibleRegionDirty, int64_t time, int64_t vsyncId) {
+void SurfaceFlinger::addToLayerTracing(bool visibleRegionDirty, TimePoint time, VsyncId vsyncId) {
     const uint32_t tracingFlags = mLayerTracing.getFlags();
     LayersProto layers(dumpDrawingStateProto(tracingFlags));
     if (tracingFlags & LayerTracing::TRACE_EXTRA) {
@@ -8371,7 +8299,8 @@
         dumpHwc(hwcDump);
     }
     auto displays = dumpDisplayProto();
-    mLayerTracing.notify(visibleRegionDirty, time, vsyncId, &layers, std::move(hwcDump), &displays);
+    mLayerTracing.notify(visibleRegionDirty, time.ns(), ftl::to_underlying(vsyncId), &layers,
+                         std::move(hwcDump), &displays);
 }
 
 // gui::ISurfaceComposer
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 4b29be8..e27d21f 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -43,6 +43,7 @@
 #include <renderengine/LayerSettings.h>
 #include <serviceutils/PriorityDumper.h>
 #include <system/graphics.h>
+#include <ui/DisplayMap.h>
 #include <ui/FenceTime.h>
 #include <ui/PixelFormat.h>
 #include <ui/Size.h>
@@ -62,7 +63,6 @@
 #include <scheduler/interface/ICompositor.h>
 #include <ui/FenceResult.h>
 
-#include "Display/DisplayMap.h"
 #include "Display/PhysicalDisplay.h"
 #include "DisplayDevice.h"
 #include "DisplayHardware/HWC2.h"
@@ -633,15 +633,12 @@
 
     // ICompositor overrides:
     void configure() override;
-    bool commit(TimePoint frameTime, VsyncId, TimePoint expectedVsyncTime) override;
-    void composite(TimePoint frameTime, VsyncId) override;
+    bool commit(const scheduler::FrameTarget&) override;
+    CompositeResult composite(scheduler::FrameTargeter&) override;
     void sample() override;
 
     // ISchedulerCallback overrides:
-
-    // Toggles hardware VSYNC by calling into HWC.
-    // TODO(b/241286146): Rename for self-explanatory API.
-    void setVsyncEnabled(PhysicalDisplayId, bool) override;
+    void requestHardwareVsync(PhysicalDisplayId, bool) override;
     void requestDisplayModes(std::vector<display::DisplayModeRequest>) override;
     void kernelTimerChanged(bool expired) override;
     void triggerOnFrameRateOverridesChanged() override;
@@ -714,10 +711,9 @@
     void updateLayerGeometry();
     void updateLayerMetadataSnapshot();
     std::vector<std::pair<Layer*, LayerFE*>> moveSnapshotsToCompositionArgs(
-            compositionengine::CompositionRefreshArgs& refreshArgs, bool cursorOnly,
-            int64_t vsyncId);
+            compositionengine::CompositionRefreshArgs& refreshArgs, bool cursorOnly);
     void moveSnapshotsFromCompositionArgs(compositionengine::CompositionRefreshArgs& refreshArgs,
-                                          std::vector<std::pair<Layer*, LayerFE*>>& layers);
+                                          const std::vector<std::pair<Layer*, LayerFE*>>& layers);
     bool updateLayerSnapshotsLegacy(VsyncId vsyncId, frontend::Update& update,
                                     bool transactionsFlushed, bool& out)
             REQUIRES(kMainThreadContext);
@@ -960,7 +956,8 @@
     /*
      * Compositing
      */
-    void postComposition(nsecs_t callTime) REQUIRES(kMainThreadContext);
+    void postComposition(scheduler::FrameTargeter&, nsecs_t presentStartTime)
+            REQUIRES(kMainThreadContext);
 
     /*
      * Display management
@@ -1001,25 +998,6 @@
      */
     nsecs_t getVsyncPeriodFromHWC() const REQUIRES(mStateLock);
 
-    void setHWCVsyncEnabled(PhysicalDisplayId id, bool enabled) {
-        hal::Vsync halState = enabled ? hal::Vsync::ENABLE : hal::Vsync::DISABLE;
-        getHwComposer().setVsyncEnabled(id, halState);
-    }
-
-    using FenceTimePtr = std::shared_ptr<FenceTime>;
-
-    bool wouldPresentEarly(TimePoint frameTime, Period) const REQUIRES(kMainThreadContext);
-
-    const FenceTimePtr& getPreviousPresentFence(TimePoint frameTime, Period) const
-            REQUIRES(kMainThreadContext);
-
-    // Blocks the thread waiting for up to graceTimeMs in case the fence is about to signal.
-    static bool isFencePending(const FenceTimePtr&, int graceTimeMs);
-
-    // Calculates the expected present time for this frame. For negative offsets, performs a
-    // correction using the predicted vsync for the next frame instead.
-    TimePoint calculateExpectedPresentTime(TimePoint frameTime) const;
-
     /*
      * Display identification
      */
@@ -1090,7 +1068,7 @@
     void dumpOffscreenLayersProto(LayersProto& layersProto,
                                   uint32_t traceFlags = LayerTracing::TRACE_ALL) const;
     google::protobuf::RepeatedPtrField<DisplayProto> dumpDisplayProto() const;
-    void addToLayerTracing(bool visibleRegionDirty, int64_t time, int64_t vsyncId)
+    void addToLayerTracing(bool visibleRegionDirty, TimePoint, VsyncId)
             REQUIRES(kMainThreadContext);
 
     // Dumps state from HW Composer
@@ -1228,7 +1206,7 @@
     // never removed, so take precedence over external and virtual displays.
     //
     // May be read from any thread, but must only be written from the main thread.
-    display::DisplayMap<wp<IBinder>, const sp<DisplayDevice>> mDisplays GUARDED_BY(mStateLock);
+    ui::DisplayMap<wp<IBinder>, const sp<DisplayDevice>> mDisplays GUARDED_BY(mStateLock);
 
     display::PhysicalDisplays mPhysicalDisplays GUARDED_BY(mStateLock);
 
@@ -1265,9 +1243,6 @@
 
     // If blurs should be enabled on this device.
     bool mSupportsBlur = false;
-    std::atomic<uint32_t> mFrameMissedCount = 0;
-    std::atomic<uint32_t> mHwcFrameMissedCount = 0;
-    std::atomic<uint32_t> mGpuFrameMissedCount = 0;
 
     TransactionCallbackInvoker mTransactionCallbackInvoker;
 
@@ -1335,15 +1310,6 @@
     std::unique_ptr<scheduler::RefreshRateStats> mRefreshRateStats;
     scheduler::PresentLatencyTracker mPresentLatencyTracker GUARDED_BY(kMainThreadContext);
 
-    struct FenceWithFenceTime {
-        sp<Fence> fence = Fence::NO_FENCE;
-        FenceTimePtr fenceTime = FenceTime::NO_FENCE;
-    };
-    std::array<FenceWithFenceTime, 2> mPreviousPresentFences;
-
-    TimePoint mScheduledPresentTime GUARDED_BY(kMainThreadContext);
-    TimePoint mExpectedPresentTime GUARDED_BY(kMainThreadContext);
-
     // below flags are set by main thread only
     bool mSetActiveModePending = false;
 
@@ -1446,7 +1412,7 @@
     std::unordered_map<uint32_t, sp<Layer>> mLegacyLayers;
 
     TransactionHandler mTransactionHandler;
-    display::DisplayMap<ui::LayerStack, frontend::DisplayInfo> mFrontEndDisplayInfos;
+    ui::DisplayMap<ui::LayerStack, frontend::DisplayInfo> mFrontEndDisplayInfos;
     bool mFrontEndDisplayInfosChanged = false;
 
     // WindowInfo ids visible during the last commit.
diff --git a/services/surfaceflinger/TEST_MAPPING b/services/surfaceflinger/TEST_MAPPING
index 155a275..fc6c4f3 100644
--- a/services/surfaceflinger/TEST_MAPPING
+++ b/services/surfaceflinger/TEST_MAPPING
@@ -1,4 +1,9 @@
 {
+  "imports": [
+    {
+      "path": "frameworks/native/libs/gui"
+    }
+  ],
   "presubmit": [
     {
       "name": "libsurfaceflinger_unittest"
@@ -7,14 +12,6 @@
       "name": "libcompositionengine_test"
     },
     {
-      "name": "libgui_test",
-      "options": [
-        {
-          "native-test-flag": "--gtest_filter=\"InputSurfacesTest*:MultiDisplayTests*\""
-        }
-      ]
-    },
-    {
       "name": "libscheduler_test"
     }
   ],
diff --git a/services/surfaceflinger/Tracing/TransactionProtoParser.cpp b/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
index 0694180..dafdc8a 100644
--- a/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
+++ b/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
@@ -601,7 +601,7 @@
 
 void TransactionProtoParser::fromProto(
         const google::protobuf::RepeatedPtrField<proto::DisplayInfo>& proto,
-        display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& outDisplayInfos) {
+        frontend::DisplayInfos& outDisplayInfos) {
     outDisplayInfos.clear();
     for (const proto::DisplayInfo& displayInfo : proto) {
         outDisplayInfos.emplace_or_replace(ui::LayerStack::fromValue(displayInfo.layer_stack()),
diff --git a/services/surfaceflinger/Tracing/TransactionProtoParser.h b/services/surfaceflinger/Tracing/TransactionProtoParser.h
index d6c98e1..457c3be 100644
--- a/services/surfaceflinger/Tracing/TransactionProtoParser.h
+++ b/services/surfaceflinger/Tracing/TransactionProtoParser.h
@@ -18,9 +18,8 @@
 #include <gui/fake/BufferData.h>
 #include <layerproto/TransactionProto.h>
 #include <utils/RefBase.h>
-#include "Display/DisplayMap.h"
-#include "FrontEnd/DisplayInfo.h"
 
+#include "FrontEnd/DisplayInfo.h"
 #include "FrontEnd/LayerCreationArgs.h"
 #include "TransactionState.h"
 
@@ -56,9 +55,8 @@
     void fromProto(const proto::LayerCreationArgs&, LayerCreationArgs& outArgs);
     std::unique_ptr<FlingerDataMapper> mMapper;
     static frontend::DisplayInfo fromProto(const proto::DisplayInfo&);
-    static void fromProto(
-            const google::protobuf::RepeatedPtrField<proto::DisplayInfo>&,
-            display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& outDisplayInfos);
+    static void fromProto(const google::protobuf::RepeatedPtrField<proto::DisplayInfo>&,
+                          frontend::DisplayInfos& outDisplayInfos);
 
 private:
     proto::DisplayState toProto(const DisplayState&);
diff --git a/services/surfaceflinger/Tracing/TransactionTracing.cpp b/services/surfaceflinger/Tracing/TransactionTracing.cpp
index 87a633f..7e330b9 100644
--- a/services/surfaceflinger/Tracing/TransactionTracing.cpp
+++ b/services/surfaceflinger/Tracing/TransactionTracing.cpp
@@ -28,6 +28,7 @@
 #include "TransactionTracing.h"
 
 namespace android {
+ANDROID_SINGLETON_STATIC_INSTANCE(android::TransactionTraceWriter)
 
 TransactionTracing::TransactionTracing()
       : mProtoParser(std::make_unique<TransactionProtoParser::FlingerDataMapper>()) {
@@ -56,7 +57,7 @@
     writeToFile();
 }
 
-status_t TransactionTracing::writeToFile(std::string filename) {
+status_t TransactionTracing::writeToFile(const std::string& filename) {
     std::scoped_lock lock(mTraceLock);
     proto::TransactionTraceFile fileProto = createTraceFileProto();
     addStartingStateToProtoLocked(fileProto);
@@ -92,10 +93,10 @@
     mTransactionQueue.push(state);
 }
 
-void TransactionTracing::addCommittedTransactions(
-        int64_t vsyncId, nsecs_t commitTime, frontend::Update& newUpdate,
-        const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displayInfos,
-        bool displayInfoChanged) {
+void TransactionTracing::addCommittedTransactions(int64_t vsyncId, nsecs_t commitTime,
+                                                  frontend::Update& newUpdate,
+                                                  const frontend::DisplayInfos& displayInfos,
+                                                  bool displayInfoChanged) {
     CommittedUpdates update;
     update.vsyncId = vsyncId;
     update.timestamp = commitTime;
@@ -115,6 +116,7 @@
     }
     mPendingUpdates.emplace_back(update);
     tryPushToTracingThread();
+    mLastUpdatedVsyncId = vsyncId;
 }
 
 void TransactionTracing::loop() {
@@ -218,19 +220,29 @@
     mTransactionsAddedToBufferCv.notify_one();
 }
 
-void TransactionTracing::flush(int64_t vsyncId) {
-    while (!mPendingUpdates.empty() || !mPendingDestroyedLayers.empty()) {
-        tryPushToTracingThread();
+void TransactionTracing::flush() {
+    {
+        std::scoped_lock lock(mMainThreadLock);
+        // Collect any pending transactions and wait for transactions to be added to
+        mUpdates.insert(mUpdates.end(), std::make_move_iterator(mPendingUpdates.begin()),
+                        std::make_move_iterator(mPendingUpdates.end()));
+        mPendingUpdates.clear();
+        mDestroyedLayers.insert(mDestroyedLayers.end(), mPendingDestroyedLayers.begin(),
+                                mPendingDestroyedLayers.end());
+        mPendingDestroyedLayers.clear();
+        mTransactionsAvailableCv.notify_one();
     }
     std::unique_lock<std::mutex> lock(mTraceLock);
     base::ScopedLockAssertion assumeLocked(mTraceLock);
-    mTransactionsAddedToBufferCv.wait(lock, [&]() REQUIRES(mTraceLock) {
-        proto::TransactionTraceEntry entry;
-        if (mBuffer.used() > 0) {
-            entry.ParseFromString(mBuffer.back());
-        }
-        return mBuffer.used() > 0 && entry.vsync_id() >= vsyncId;
-    });
+    mTransactionsAddedToBufferCv.wait_for(lock, std::chrono::milliseconds(100),
+                                          [&]() REQUIRES(mTraceLock) {
+                                              proto::TransactionTraceEntry entry;
+                                              if (mBuffer.used() > 0) {
+                                                  entry.ParseFromString(mBuffer.back());
+                                              }
+                                              return mBuffer.used() > 0 &&
+                                                      entry.vsync_id() >= mLastUpdatedVsyncId;
+                                          });
 }
 
 void TransactionTracing::onLayerRemoved(int32_t layerId) {
diff --git a/services/surfaceflinger/Tracing/TransactionTracing.h b/services/surfaceflinger/Tracing/TransactionTracing.h
index f27e7a9..fa006fc 100644
--- a/services/surfaceflinger/Tracing/TransactionTracing.h
+++ b/services/surfaceflinger/Tracing/TransactionTracing.h
@@ -19,13 +19,13 @@
 #include <android-base/thread_annotations.h>
 #include <layerproto/TransactionProto.h>
 #include <utils/Errors.h>
+#include <utils/Singleton.h>
 #include <utils/Timers.h>
 
 #include <memory>
 #include <mutex>
 #include <thread>
 
-#include "Display/DisplayMap.h"
 #include "FrontEnd/DisplayInfo.h"
 #include "FrontEnd/LayerCreationArgs.h"
 #include "FrontEnd/Update.h"
@@ -59,14 +59,14 @@
     ~TransactionTracing();
 
     void addQueuedTransaction(const TransactionState&);
-    void addCommittedTransactions(
-            int64_t vsyncId, nsecs_t commitTime, frontend::Update& update,
-            const display::DisplayMap<ui::LayerStack, frontend::DisplayInfo>& displayInfos,
-            bool displayInfoChanged);
-    status_t writeToFile(std::string filename = FILE_NAME);
+    void addCommittedTransactions(int64_t vsyncId, nsecs_t commitTime, frontend::Update& update,
+                                  const frontend::DisplayInfos&, bool displayInfoChanged);
+    status_t writeToFile(const std::string& filename = FILE_PATH);
     void setBufferSize(size_t bufferSizeInBytes);
     void onLayerRemoved(int layerId);
     void dump(std::string&) const;
+    // Wait until all the committed transactions for the specified vsync id are added to the buffer.
+    void flush() EXCLUDES(mMainThreadLock);
     static constexpr auto CONTINUOUS_TRACING_BUFFER_SIZE = 512 * 1024;
     static constexpr auto ACTIVE_TRACING_BUFFER_SIZE = 100 * 1024 * 1024;
     // version 1 - switching to support new frontend
@@ -76,7 +76,9 @@
     friend class TransactionTracingTest;
     friend class SurfaceFlinger;
 
-    static constexpr auto FILE_NAME = "/data/misc/wmtrace/transactions_trace.winscope";
+    static constexpr auto DIR_NAME = "/data/misc/wmtrace/";
+    static constexpr auto FILE_NAME = "/transactions_trace.winscope";
+    static constexpr auto FILE_PATH = "/data/misc/wmtrace/transactions_trace.winscope";
 
     mutable std::mutex mTraceLock;
     RingBuffer<proto::TransactionTraceFile, proto::TransactionTraceEntry> mBuffer
@@ -88,8 +90,7 @@
     nsecs_t mStartingTimestamp GUARDED_BY(mTraceLock);
     std::unordered_map<int, proto::LayerCreationArgs> mCreatedLayers GUARDED_BY(mTraceLock);
     std::map<uint32_t /* layerId */, TracingLayerState> mStartingStates GUARDED_BY(mTraceLock);
-    display::DisplayMap<ui::LayerStack, frontend::DisplayInfo> mStartingDisplayInfos
-            GUARDED_BY(mTraceLock);
+    frontend::DisplayInfos mStartingDisplayInfos GUARDED_BY(mTraceLock);
 
     std::set<uint32_t /* layerId */> mRemovedLayerHandlesAtStart GUARDED_BY(mTraceLock);
     TransactionProtoParser mProtoParser;
@@ -106,7 +107,7 @@
         std::vector<LayerCreationArgs> createdLayers;
         std::vector<uint32_t> destroyedLayerHandles;
         bool displayInfoChanged;
-        display::DisplayMap<ui::LayerStack, frontend::DisplayInfo> displayInfos;
+        frontend::DisplayInfos displayInfos;
         int64_t vsyncId;
         int64_t timestamp;
     };
@@ -115,6 +116,7 @@
 
     std::vector<uint32_t /* layerId */> mDestroyedLayers GUARDED_BY(mMainThreadLock);
     std::vector<uint32_t /* layerId */> mPendingDestroyedLayers; // only accessed by main thread
+    int64_t mLastUpdatedVsyncId = -1;
 
     proto::TransactionTraceFile createTraceFileProto() const;
     void loop();
@@ -125,10 +127,21 @@
     void addStartingStateToProtoLocked(proto::TransactionTraceFile& proto) REQUIRES(mTraceLock);
     void updateStartingStateLocked(const proto::TransactionTraceEntry& entry) REQUIRES(mTraceLock);
     // TEST
-    // Wait until all the committed transactions for the specified vsync id are added to the buffer.
-    void flush(int64_t vsyncId) EXCLUDES(mMainThreadLock);
     // Return buffer contents as trace file proto
     proto::TransactionTraceFile writeToProto() EXCLUDES(mMainThreadLock);
 };
 
+class TransactionTraceWriter : public Singleton<TransactionTraceWriter> {
+    friend class Singleton<TransactionTracing>;
+    std::function<void(const std::string& prefix, bool overwrite)> mWriterFunction =
+            [](const std::string&, bool) {};
+
+public:
+    void setWriterFunction(
+            std::function<void(const std::string& prefix, bool overwrite)> function) {
+        mWriterFunction = std::move(function);
+    }
+    void invoke(const std::string& prefix, bool overwrite) { mWriterFunction(prefix, overwrite); }
+};
+
 } // namespace android
diff --git a/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp b/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp
index 55004c5..519ef44 100644
--- a/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp
+++ b/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.cpp
@@ -41,7 +41,7 @@
 using namespace ftl::flag_operators;
 
 bool LayerTraceGenerator::generate(const proto::TransactionTraceFile& traceFile,
-                                   const char* outputLayersTracePath) {
+                                   const char* outputLayersTracePath, bool onlyLastEntry) {
     if (traceFile.entry_size() == 0) {
         ALOGD("Trace file is empty");
         return false;
@@ -53,7 +53,7 @@
     frontend::LayerLifecycleManager lifecycleManager;
     frontend::LayerHierarchyBuilder hierarchyBuilder{{}};
     frontend::LayerSnapshotBuilder snapshotBuilder;
-    display::DisplayMap<ui::LayerStack, frontend::DisplayInfo> displayInfos;
+    ui::DisplayMap<ui::LayerStack, frontend::DisplayInfo> displayInfos;
 
     renderengine::ShadowSettings globalShadowSettings{.ambientColor = {1, 1, 1, 1}};
     char value[PROPERTY_VALUE_MAX];
@@ -158,9 +158,11 @@
                                                                   layerTracing.getFlags())
                                           .generate(hierarchyBuilder.getHierarchy());
         auto displayProtos = LayerProtoHelper::writeDisplayInfoToProto(displayInfos);
-        layerTracing.notify(visibleRegionsDirty, entry.elapsed_realtime_nanos(), entry.vsync_id(),
-                            &layersProto, {}, &displayProtos);
-        layerTracing.appendToStream(out);
+        if (!onlyLastEntry || (i == traceFile.entry_size() - 1)) {
+            layerTracing.notify(visibleRegionsDirty, entry.elapsed_realtime_nanos(),
+                                entry.vsync_id(), &layersProto, {}, &displayProtos);
+            layerTracing.appendToStream(out);
+        }
     }
     layerTracing.disable("", /*writeToFile=*/false);
     out.close();
diff --git a/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.h b/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.h
index ee1ea6c..e41d1e6 100644
--- a/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.h
+++ b/services/surfaceflinger/Tracing/tools/LayerTraceGenerator.h
@@ -21,6 +21,7 @@
 namespace android {
 class LayerTraceGenerator {
 public:
-    bool generate(const proto::TransactionTraceFile&, const char* outputLayersTracePath);
+    bool generate(const proto::TransactionTraceFile&, const char* outputLayersTracePath,
+                  bool onlyLastEntry);
 };
 } // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/Tracing/tools/main.cpp b/services/surfaceflinger/Tracing/tools/main.cpp
index c440c19..5ca87e4 100644
--- a/services/surfaceflinger/Tracing/tools/main.cpp
+++ b/services/surfaceflinger/Tracing/tools/main.cpp
@@ -26,9 +26,9 @@
 using namespace android;
 
 int main(int argc, char** argv) {
-    if (argc > 3) {
+    if (argc > 4) {
         std::cout << "Usage: " << argv[0]
-                  << " [transaction-trace-path] [output-layers-trace-path]\n";
+                  << " [transaction-trace-path] [output-layers-trace-path] [--last-entry-only]\n";
         return -1;
     }
 
@@ -48,12 +48,16 @@
     }
 
     const char* outputLayersTracePath =
-            (argc == 3) ? argv[2] : "/data/misc/wmtrace/layers_trace.winscope";
-    ;
+            (argc >= 3) ? argv[2] : "/data/misc/wmtrace/layers_trace.winscope";
+
+    const bool generateLastEntryOnly =
+            argc >= 4 && std::string_view(argv[3]) == "--last-entry-only";
+
     ALOGD("Generating %s...", outputLayersTracePath);
     std::cout << "Generating " << outputLayersTracePath << "\n";
 
-    if (!LayerTraceGenerator().generate(transactionTraceFile, outputLayersTracePath)) {
+    if (!LayerTraceGenerator().generate(transactionTraceFile, outputLayersTracePath,
+                                        generateLastEntryOnly)) {
         std::cout << "Error: Failed to generate layers trace " << outputLayersTracePath;
         return -1;
     }
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
index 4d03be0..0c9a16b 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
@@ -286,8 +286,8 @@
 private:
     // ICompositor overrides:
     void configure() override {}
-    bool commit(TimePoint, VsyncId, TimePoint) override { return false; }
-    void composite(TimePoint, VsyncId) override {}
+    bool commit(const scheduler::FrameTarget&) override { return false; }
+    CompositeResult composite(scheduler::FrameTargeter&) override { return {}; }
     void sample() override {}
 
     // MessageQueue overrides:
@@ -604,7 +604,9 @@
 
             mFlinger->commitTransactions();
             mFlinger->flushTransactionQueues(getFuzzedVsyncId(mFdp));
-            mFlinger->postComposition(systemTime());
+
+            scheduler::FrameTargeter frameTargeter(mFdp.ConsumeBool());
+            mFlinger->postComposition(frameTargeter, mFdp.ConsumeIntegral<nsecs_t>());
         }
 
         mFlinger->setTransactionFlags(mFdp.ConsumeIntegral<uint32_t>());
@@ -622,8 +624,6 @@
 
         mFlinger->getMaxAcquiredBufferCountForCurrentRefreshRate(mFdp.ConsumeIntegral<uid_t>());
 
-        mFlinger->calculateExpectedPresentTime({});
-
         mFlinger->enableHalVirtualDisplays(mFdp.ConsumeBool());
 
         fuzzDumpsysAndDebug(&mFdp);
@@ -788,7 +788,7 @@
     }
 
 private:
-    void setVsyncEnabled(PhysicalDisplayId, bool) override {}
+    void requestHardwareVsync(PhysicalDisplayId, bool) override {}
     void requestDisplayModes(std::vector<display::DisplayModeRequest>) override {}
     void kernelTimerChanged(bool) override {}
     void triggerOnFrameRateOverridesChanged() override {}
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp b/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp
index 921cae4..9f0bdde 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_layer_fuzzer.cpp
@@ -106,7 +106,7 @@
     effectLayer->addSurfaceFramePresentedForBuffer(surfaceFrame,
                                                    mFdp.ConsumeIntegral<int64_t>() /*acquireTime*/,
                                                    mFdp.ConsumeIntegral<int64_t>() /*currentTime*/);
-    effectLayer->addSurfaceFrameDroppedForBuffer(surfaceFrame1);
+    effectLayer->addSurfaceFrameDroppedForBuffer(surfaceFrame1, mFdp.ConsumeIntegral<nsecs_t>());
 
     parent.clear();
     client.clear();
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_scheduler_fuzzer.cpp b/services/surfaceflinger/fuzzer/surfaceflinger_scheduler_fuzzer.cpp
index f17d2e1..b1fd06f 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_scheduler_fuzzer.cpp
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_scheduler_fuzzer.cpp
@@ -19,6 +19,7 @@
 #include <fuzzer/FuzzedDataProvider.h>
 #include <processgroup/sched_policy.h>
 
+#include <scheduler/IVsyncSource.h>
 #include <scheduler/PresentLatencyTracker.h>
 
 #include "Scheduler/OneShotTimer.h"
@@ -42,6 +43,7 @@
                                      (120_Hz).getPeriodNsecs()};
 
 constexpr auto kLayerVoteTypes = ftl::enum_range<scheduler::RefreshRateSelector::LayerVoteType>();
+constexpr auto kCompositionCoverage = ftl::enum_range<CompositionCoverage>();
 
 constexpr PowerMode kPowerModes[] = {PowerMode::ON, PowerMode::DOZE, PowerMode::OFF,
                                      PowerMode::DOZE_SUSPEND, PowerMode::ON_SUSPEND};
@@ -56,6 +58,10 @@
     component->dump(res);
 }
 
+inline sp<Fence> makeFakeFence() {
+    return sp<Fence>::make(memfd_create("fd", MFD_ALLOW_SEALING));
+}
+
 class SchedulerFuzzer {
 public:
     SchedulerFuzzer(const uint8_t* data, size_t size) : mFdp(data, size){};
@@ -65,6 +71,7 @@
     void fuzzRefreshRateSelection();
     void fuzzRefreshRateSelector();
     void fuzzPresentLatencyTracker();
+    void fuzzFrameTargeter();
     void fuzzVSyncModulator();
     void fuzzVSyncPredictor();
     void fuzzVSyncReactor();
@@ -256,13 +263,13 @@
     reactor.addHwVsyncTimestamp(0, std::nullopt, &periodFlushed);
     reactor.addHwVsyncTimestamp(mFdp.ConsumeIntegral<nsecs_t>() /*newPeriod*/, std::nullopt,
                                 &periodFlushed);
-    sp<Fence> fence = sp<Fence>::make(memfd_create("fd", MFD_ALLOW_SEALING));
-    std::shared_ptr<FenceTime> ft = std::make_shared<FenceTime>(fence);
+
+    const auto fence = std::make_shared<FenceTime>(makeFakeFence());
     vSyncTracker->addVsyncTimestamp(mFdp.ConsumeIntegral<nsecs_t>());
     FenceTime::Snapshot snap(mFdp.ConsumeIntegral<nsecs_t>());
-    ft->applyTrustedSnapshot(snap);
+    fence->applyTrustedSnapshot(snap);
     reactor.setIgnorePresentFences(mFdp.ConsumeBool());
-    reactor.addPresentFence(ft);
+    reactor.addPresentFence(fence);
     dump<scheduler::VSyncReactor>(&reactor, &mFdp);
 }
 
@@ -392,14 +399,45 @@
 
 void SchedulerFuzzer::fuzzPresentLatencyTracker() {
     scheduler::PresentLatencyTracker tracker;
-    tracker.trackPendingFrame(TimePoint::fromNs(mFdp.ConsumeIntegral<nsecs_t>()),
-                              FenceTime::NO_FENCE);
+
+    int i = 5;
+    while (i-- > 0) {
+        tracker.trackPendingFrame(getFuzzedTimePoint(mFdp),
+                                  std::make_shared<FenceTime>(makeFakeFence()));
+    }
+}
+
+void SchedulerFuzzer::fuzzFrameTargeter() {
+    scheduler::FrameTargeter frameTargeter(mFdp.ConsumeBool());
+
+    const struct VsyncSource final : scheduler::IVsyncSource {
+        explicit VsyncSource(FuzzedDataProvider& fuzzer) : fuzzer(fuzzer) {}
+        FuzzedDataProvider& fuzzer;
+
+        Period period() const { return getFuzzedDuration(fuzzer); }
+        TimePoint vsyncDeadlineAfter(TimePoint) const { return getFuzzedTimePoint(fuzzer); }
+    } vsyncSource{mFdp};
+
+    int i = 10;
+    while (i-- > 0) {
+        frameTargeter.beginFrame({.frameBeginTime = getFuzzedTimePoint(mFdp),
+                                  .vsyncId = getFuzzedVsyncId(mFdp),
+                                  .expectedVsyncTime = getFuzzedTimePoint(mFdp),
+                                  .sfWorkDuration = getFuzzedDuration(mFdp)},
+                                 vsyncSource);
+
+        frameTargeter.setPresentFence(makeFakeFence());
+
+        frameTargeter.endFrame(
+                {.compositionCoverage = mFdp.PickValueInArray(kCompositionCoverage.values)});
+    }
 }
 
 void SchedulerFuzzer::process() {
     fuzzRefreshRateSelection();
     fuzzRefreshRateSelector();
     fuzzPresentLatencyTracker();
+    fuzzFrameTargeter();
     fuzzVSyncModulator();
     fuzzVSyncPredictor();
     fuzzVSyncReactor();
diff --git a/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp b/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp
index 2b29530..b8a5e79 100644
--- a/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp
+++ b/services/surfaceflinger/tests/tracing/TransactionTraceTestSuite.cpp
@@ -59,8 +59,8 @@
         std::string actualLayersTracePath =
                 std::string(temp_dir.path) + "/" + expectedLayersFilename + "_actual";
 
-        EXPECT_TRUE(
-                LayerTraceGenerator().generate(mTransactionTrace, actualLayersTracePath.c_str()))
+        EXPECT_TRUE(LayerTraceGenerator().generate(mTransactionTrace, actualLayersTracePath.c_str(),
+                                                   /*onlyLastEntry=*/true))
                 << "Failed to generate layers trace from " << transactionTracePath;
         EXPECT_TRUE(std::filesystem::exists(std::filesystem::path(actualLayersTracePath)));
         parseLayersTraceFromFile(actualLayersTracePath.c_str(), mActualLayersTraceProto);
@@ -86,9 +86,9 @@
 std::vector<std::filesystem::path> TransactionTraceTestSuite::sTransactionTraces{};
 
 struct LayerInfo {
-    int32_t id;
+    uint64_t id;
     std::string name;
-    int32_t parent;
+    uint64_t parent;
     int z;
     uint64_t curr_frame;
     float x;
@@ -119,8 +119,8 @@
 }
 
 struct find_id : std::unary_function<LayerInfo, bool> {
-    int id;
-    find_id(int id) : id(id) {}
+    uint64_t id;
+    find_id(uint64_t id) : id(id) {}
     bool operator()(LayerInfo const& m) const { return m.id == id; }
 };
 
@@ -136,9 +136,9 @@
         touchableRegionBounds = touchableRegion.bounds();
     }
 
-    return {proto.id(),
+    return {static_cast<uint64_t>(proto.id()),
             proto.name(),
-            proto.parent(),
+            static_cast<uint64_t>(proto.parent()),
             proto.z(),
             proto.curr_frame(),
             proto.has_position() ? proto.position().x() : -1,
@@ -150,7 +150,7 @@
 
 static std::vector<LayerInfo> getLayerInfosFromProto(
         android::surfaceflinger::LayersTraceProto& entry) {
-    std::unordered_map<int32_t /* snapshotId*/, int32_t /*layerId*/> snapshotIdToLayerId;
+    std::unordered_map<uint64_t /* snapshotId*/, uint64_t /*layerId*/> snapshotIdToLayerId;
     std::vector<LayerInfo> layers;
     layers.reserve(static_cast<size_t>(entry.layers().layers_size()));
     bool mapSnapshotIdToLayerId = false;
@@ -158,7 +158,12 @@
         auto layer = entry.layers().layers(i);
         LayerInfo layerInfo = getLayerInfoFromProto(layer);
 
-        snapshotIdToLayerId[layerInfo.id] = static_cast<int32_t>(layer.original_id());
+        uint64_t layerId = layerInfo.name.find("(Mirror)") == std::string::npos
+                ? static_cast<uint64_t>(layer.original_id())
+                : static_cast<uint64_t>(layer.original_id()) | 1ull << 63;
+
+        snapshotIdToLayerId[layerInfo.id] = layerId;
+
         if (layer.original_id() != 0) {
             mapSnapshotIdToLayerId = true;
         }
@@ -172,7 +177,7 @@
     for (auto& layer : layers) {
         layer.id = snapshotIdToLayerId[layer.id];
         auto it = snapshotIdToLayerId.find(layer.parent);
-        layer.parent = it == snapshotIdToLayerId.end() ? -1 : it->second;
+        layer.parent = it == snapshotIdToLayerId.end() ? static_cast<uint64_t>(-1) : it->second;
     }
     return layers;
 }
@@ -189,7 +194,6 @@
 
     std::vector<LayerInfo> expectedLayers = getLayerInfosFromProto(expectedLastEntry);
     std::vector<LayerInfo> actualLayers = getLayerInfosFromProto(actualLastEntry);
-    ;
 
     size_t i = 0;
     for (; i < actualLayers.size() && i < expectedLayers.size(); i++) {
@@ -197,9 +201,9 @@
                                find_id(expectedLayers[i].id));
         EXPECT_NE(it, actualLayers.end());
         EXPECT_EQ(expectedLayers[i], *it);
-        ALOGV("Validating %s[%d] parent=%d z=%d frame=%" PRIu64, expectedLayers[i].name.c_str(),
-              expectedLayers[i].id, expectedLayers[i].parent, expectedLayers[i].z,
-              expectedLayers[i].curr_frame);
+        ALOGV("Validating %s[%" PRIu64 "] parent=%" PRIu64 " z=%d frame=%" PRIu64,
+              expectedLayers[i].name.c_str(), expectedLayers[i].id, expectedLayers[i].parent,
+              expectedLayers[i].z, expectedLayers[i].curr_frame);
     }
 
     EXPECT_EQ(expectedLayers.size(), actualLayers.size());
@@ -208,9 +212,9 @@
         for (size_t j = 0; j < actualLayers.size(); j++) {
             if (std::find_if(expectedLayers.begin(), expectedLayers.end(),
                              find_id(actualLayers[j].id)) == expectedLayers.end()) {
-                ALOGD("actualLayers [%d]:%s parent=%d z=%d frame=%" PRIu64, actualLayers[j].id,
-                      actualLayers[j].name.c_str(), actualLayers[j].parent, actualLayers[j].z,
-                      actualLayers[j].curr_frame);
+                ALOGD("actualLayers [%" PRIu64 "]:%s parent=%" PRIu64 " z=%d frame=%" PRIu64,
+                      actualLayers[j].id, actualLayers[j].name.c_str(), actualLayers[j].parent,
+                      actualLayers[j].z, actualLayers[j].curr_frame);
             }
         }
         FAIL();
@@ -220,9 +224,9 @@
         for (size_t j = 0; j < expectedLayers.size(); j++) {
             if (std::find_if(actualLayers.begin(), actualLayers.end(),
                              find_id(expectedLayers[j].id)) == actualLayers.end()) {
-                ALOGD("expectedLayers [%d]:%s parent=%d z=%d frame=%" PRIu64, expectedLayers[j].id,
-                      expectedLayers[j].name.c_str(), expectedLayers[j].parent, expectedLayers[j].z,
-                      expectedLayers[j].curr_frame);
+                ALOGD("expectedLayers [%" PRIu64 "]:%s parent=%" PRIu64 " z=%d frame=%" PRIu64,
+                      expectedLayers[j].id, expectedLayers[j].name.c_str(),
+                      expectedLayers[j].parent, expectedLayers[j].z, expectedLayers[j].curr_frame);
             }
         }
         FAIL();
diff --git a/services/surfaceflinger/tests/tracing/readme.md b/services/surfaceflinger/tests/tracing/readme.md
index 3e80a74..f545a3c 100644
--- a/services/surfaceflinger/tests/tracing/readme.md
+++ b/services/surfaceflinger/tests/tracing/readme.md
@@ -14,7 +14,9 @@
 #### Workflow ####
 Add transaction traces that resulted in front end bugs along
 with the layer trace after fixing the issue. The layer trace
-can be generated by using the layertracegenerator tool. The
+can be generated by using the layertracegenerator tool. Use the
+--last-entry-only flag to generate only the last entry in the
+trace. This will keep the test data to a manageable size. The
 main goal of this test suite is to add regression tests with
 minimal effort.
 
diff --git a/services/surfaceflinger/tests/tracing/testdata/layers_trace_b282110579.winscope b/services/surfaceflinger/tests/tracing/testdata/layers_trace_b282110579.winscope
new file mode 100644
index 0000000..3246453
--- /dev/null
+++ b/services/surfaceflinger/tests/tracing/testdata/layers_trace_b282110579.winscope
Binary files differ
diff --git a/services/surfaceflinger/tests/tracing/testdata/transactions_trace_b282110579.winscope b/services/surfaceflinger/tests/tracing/testdata/transactions_trace_b282110579.winscope
new file mode 100644
index 0000000..ecb9431
--- /dev/null
+++ b/services/surfaceflinger/tests/tracing/testdata/transactions_trace_b282110579.winscope
Binary files differ
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
index db81bad..86af303 100644
--- a/services/surfaceflinger/tests/unittests/Android.bp
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -105,12 +105,12 @@
         "SurfaceFlinger_DisplayModeSwitching.cpp",
         "SurfaceFlinger_DisplayTransactionCommitTest.cpp",
         "SurfaceFlinger_ExcludeDolbyVisionTest.cpp",
+        "SurfaceFlinger_FoldableTest.cpp",
         "SurfaceFlinger_GetDisplayNativePrimariesTest.cpp",
         "SurfaceFlinger_GetDisplayStatsTest.cpp",
         "SurfaceFlinger_HdrOutputControlTest.cpp",
         "SurfaceFlinger_HotplugTest.cpp",
         "SurfaceFlinger_InitializeDisplaysTest.cpp",
-        "SurfaceFlinger_MultiDisplayPacesetterTest.cpp",
         "SurfaceFlinger_NotifyPowerBoostTest.cpp",
         "SurfaceFlinger_PowerHintTest.cpp",
         "SurfaceFlinger_SetDisplayStateTest.cpp",
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTestHelpers.h b/services/surfaceflinger/tests/unittests/DisplayTransactionTestHelpers.h
index e64cb38..ee12276 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTestHelpers.h
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTestHelpers.h
@@ -371,10 +371,11 @@
     // Called by tests to inject a HWC display setup
     template <bool kInitPowerMode = true>
     static void injectHwcDisplay(DisplayTransactionTest* test) {
-        EXPECT_CALL(*test->mComposer, getDisplayCapabilities(HWC_DISPLAY_ID, _))
-                .WillOnce(DoAll(SetArgPointee<1>(std::vector<DisplayCapability>({})),
-                                Return(Error::NONE)));
         if constexpr (kInitPowerMode) {
+            EXPECT_CALL(*test->mComposer, getDisplayCapabilities(HWC_DISPLAY_ID, _))
+                    .WillOnce(DoAll(SetArgPointee<1>(std::vector<DisplayCapability>({})),
+                                    Return(Error::NONE)));
+
             EXPECT_CALL(*test->mComposer, setPowerMode(HWC_DISPLAY_ID, INIT_POWER_MODE))
                     .WillOnce(Return(Error::NONE));
         }
diff --git a/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp b/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
index b8a7446..12cf070 100644
--- a/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerSnapshotTest.cpp
@@ -105,7 +105,7 @@
 
     LayerHierarchyBuilder mHierarchyBuilder{{}};
     LayerSnapshotBuilder mSnapshotBuilder;
-    display::DisplayMap<ui::LayerStack, frontend::DisplayInfo> mFrontEndDisplayInfos;
+    DisplayInfos mFrontEndDisplayInfos;
     renderengine::ShadowSettings globalShadowSettings;
     static const std::vector<uint32_t> STARTING_ZORDER;
 };
diff --git a/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp b/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp
index 8f1b450..359e2ab 100644
--- a/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp
+++ b/services/surfaceflinger/tests/unittests/MessageQueueTest.cpp
@@ -20,9 +20,10 @@
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
+#include <scheduler/interface/ICompositor.h>
+
 #include "FrameTimeline.h"
 #include "Scheduler/MessageQueue.h"
-#include "SurfaceFlinger.h"
 #include "mock/MockVSyncDispatch.h"
 
 namespace android {
@@ -34,8 +35,8 @@
 
 struct NoOpCompositor final : ICompositor {
     void configure() override {}
-    bool commit(TimePoint, VsyncId, TimePoint) override { return false; }
-    void composite(TimePoint, VsyncId) override {}
+    bool commit(const scheduler::FrameTarget&) override { return false; }
+    CompositeResult composite(scheduler::FrameTargeter&) override { return {}; }
     void sample() override {}
 } gNoOpCompositor;
 
@@ -137,7 +138,7 @@
                 generateTokenForPredictions(frametimeline::TimelineItem(kStartTime.ns(),
                                                                         kEndTime.ns(),
                                                                         kPresentTime.ns())))
-            .WillOnce(Return(vsyncId.value));
+            .WillOnce(Return(ftl::to_underlying(vsyncId)));
     EXPECT_CALL(*mEventQueue.mHandler, dispatchFrame(vsyncId, kPresentTime)).Times(1);
     EXPECT_NO_FATAL_FAILURE(
             mEventQueue.vsyncCallback(kPresentTime.ns(), kStartTime.ns(), kEndTime.ns()));
diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index 965e378..682c998 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -155,6 +155,33 @@
     EXPECT_EQ(kEventConnections, mScheduler->getEventThreadConnectionCount(mConnectionHandle));
 }
 
+TEST_F(SchedulerTest, registerDisplay) FTL_FAKE_GUARD(kMainThreadContext) {
+    // Hardware VSYNC should not change if the display is already registered.
+    EXPECT_CALL(mSchedulerCallback, requestHardwareVsync(kDisplayId1, false)).Times(0);
+    mScheduler->registerDisplay(kDisplayId1,
+                                std::make_shared<RefreshRateSelector>(kDisplay1Modes,
+                                                                      kDisplay1Mode60->getId()));
+
+    // TODO(b/241285191): Restore once VsyncSchedule::getPendingHardwareVsyncState is called by
+    // Scheduler::setDisplayPowerMode rather than SF::setPowerModeInternal.
+#if 0
+    // Hardware VSYNC should be disabled for newly registered displays.
+    EXPECT_CALL(mSchedulerCallback, requestHardwareVsync(kDisplayId2, false)).Times(1);
+    EXPECT_CALL(mSchedulerCallback, requestHardwareVsync(kDisplayId3, false)).Times(1);
+#endif
+
+    mScheduler->registerDisplay(kDisplayId2,
+                                std::make_shared<RefreshRateSelector>(kDisplay2Modes,
+                                                                      kDisplay2Mode60->getId()));
+    mScheduler->registerDisplay(kDisplayId3,
+                                std::make_shared<RefreshRateSelector>(kDisplay3Modes,
+                                                                      kDisplay3Mode60->getId()));
+
+    EXPECT_FALSE(mScheduler->getVsyncSchedule(kDisplayId1)->getPendingHardwareVsyncState());
+    EXPECT_FALSE(mScheduler->getVsyncSchedule(kDisplayId2)->getPendingHardwareVsyncState());
+    EXPECT_FALSE(mScheduler->getVsyncSchedule(kDisplayId3)->getPendingHardwareVsyncState());
+}
+
 TEST_F(SchedulerTest, chooseRefreshRateForContentIsNoopWhenModeSwitchingIsNotSupported) {
     // The layer is registered at creation time and deregistered at destruction time.
     sp<MockLayer> layer = sp<MockLayer>::make(mFlinger.flinger());
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_FoldableTest.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_FoldableTest.cpp
new file mode 100644
index 0000000..bd2344c
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_FoldableTest.cpp
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "LibSurfaceFlingerUnittests"
+
+#include "DisplayTransactionTestHelpers.h"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+namespace android {
+namespace {
+
+struct FoldableTest : DisplayTransactionTest {
+    static constexpr bool kWithMockScheduler = false;
+    FoldableTest() : DisplayTransactionTest(kWithMockScheduler) {}
+
+    void SetUp() override {
+        injectMockScheduler(kInnerDisplayId);
+
+        // Inject inner and outer displays with uninitialized power modes.
+        constexpr bool kInitPowerMode = false;
+        {
+            InnerDisplayVariant::injectHwcDisplay<kInitPowerMode>(this);
+            auto injector = InnerDisplayVariant::makeFakeExistingDisplayInjector(this);
+            injector.setPowerMode(std::nullopt);
+            injector.setRefreshRateSelector(mFlinger.scheduler()->refreshRateSelector());
+            mInnerDisplay = injector.inject();
+        }
+        {
+            OuterDisplayVariant::injectHwcDisplay<kInitPowerMode>(this);
+            auto injector = OuterDisplayVariant::makeFakeExistingDisplayInjector(this);
+            injector.setPowerMode(std::nullopt);
+            mOuterDisplay = injector.inject();
+        }
+    }
+
+    static inline PhysicalDisplayId kInnerDisplayId = InnerDisplayVariant::DISPLAY_ID::get();
+    static inline PhysicalDisplayId kOuterDisplayId = OuterDisplayVariant::DISPLAY_ID::get();
+
+    sp<DisplayDevice> mInnerDisplay, mOuterDisplay;
+};
+
+TEST_F(FoldableTest, foldUnfold) {
+    // When the device boots, the inner display should be the pacesetter.
+    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), kInnerDisplayId);
+
+    // ...and should still be after powering on.
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::ON);
+    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), kInnerDisplayId);
+
+    // The outer display should become the pacesetter after folding.
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::OFF);
+    mFlinger.setPowerModeInternal(mOuterDisplay, PowerMode::ON);
+    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), kOuterDisplayId);
+
+    // The inner display should become the pacesetter after unfolding.
+    mFlinger.setPowerModeInternal(mOuterDisplay, PowerMode::OFF);
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::ON);
+    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), kInnerDisplayId);
+
+    // The inner display should stay the pacesetter if both are powered on.
+    // TODO(b/255635821): The pacesetter should depend on the displays' refresh rates.
+    mFlinger.setPowerModeInternal(mOuterDisplay, PowerMode::ON);
+    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), kInnerDisplayId);
+
+    // The outer display should become the pacesetter if designated.
+    mFlinger.scheduler()->setPacesetterDisplay(kOuterDisplayId);
+    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), kOuterDisplayId);
+}
+
+TEST_F(FoldableTest, doesNotRequestHardwareVsyncIfPoweredOff) {
+    // Both displays are powered off.
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kInnerDisplayId, _))
+            .Times(0);
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kOuterDisplayId, _))
+            .Times(0);
+
+    EXPECT_FALSE(mInnerDisplay->isPoweredOn());
+    EXPECT_FALSE(mOuterDisplay->isPoweredOn());
+
+    auto& scheduler = *mFlinger.scheduler();
+    scheduler.onHardwareVsyncRequest(kInnerDisplayId, true);
+    scheduler.onHardwareVsyncRequest(kOuterDisplayId, true);
+}
+
+TEST_F(FoldableTest, requestsHardwareVsyncForInnerDisplay) {
+    // Only inner display is powered on.
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kInnerDisplayId, true))
+            .Times(1);
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kOuterDisplayId, _))
+            .Times(0);
+
+    // The injected VsyncSchedule uses TestableScheduler::mockRequestHardwareVsync, so no calls to
+    // ISchedulerCallback::requestHardwareVsync are expected during setPowerModeInternal.
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::ON);
+
+    EXPECT_TRUE(mInnerDisplay->isPoweredOn());
+    EXPECT_FALSE(mOuterDisplay->isPoweredOn());
+
+    auto& scheduler = *mFlinger.scheduler();
+    scheduler.onHardwareVsyncRequest(kInnerDisplayId, true);
+    scheduler.onHardwareVsyncRequest(kOuterDisplayId, true);
+}
+
+TEST_F(FoldableTest, requestsHardwareVsyncForOuterDisplay) {
+    // Only outer display is powered on.
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kInnerDisplayId, _))
+            .Times(0);
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kOuterDisplayId, true))
+            .Times(1);
+
+    // The injected VsyncSchedule uses TestableScheduler::mockRequestHardwareVsync, so no calls to
+    // ISchedulerCallback::requestHardwareVsync are expected during setPowerModeInternal.
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::ON);
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::OFF);
+    mFlinger.setPowerModeInternal(mOuterDisplay, PowerMode::ON);
+
+    EXPECT_FALSE(mInnerDisplay->isPoweredOn());
+    EXPECT_TRUE(mOuterDisplay->isPoweredOn());
+
+    auto& scheduler = *mFlinger.scheduler();
+    scheduler.onHardwareVsyncRequest(kInnerDisplayId, true);
+    scheduler.onHardwareVsyncRequest(kOuterDisplayId, true);
+}
+
+TEST_F(FoldableTest, requestsHardwareVsyncForBothDisplays) {
+    // Both displays are powered on.
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kInnerDisplayId, true))
+            .Times(1);
+    EXPECT_CALL(mFlinger.mockSchedulerCallback(), requestHardwareVsync(kOuterDisplayId, true))
+            .Times(1);
+
+    // The injected VsyncSchedule uses TestableScheduler::mockRequestHardwareVsync, so no calls to
+    // ISchedulerCallback::requestHardwareVsync are expected during setPowerModeInternal.
+    mFlinger.setPowerModeInternal(mInnerDisplay, PowerMode::ON);
+    mFlinger.setPowerModeInternal(mOuterDisplay, PowerMode::ON);
+
+    EXPECT_TRUE(mInnerDisplay->isPoweredOn());
+    EXPECT_TRUE(mOuterDisplay->isPoweredOn());
+
+    auto& scheduler = *mFlinger.scheduler();
+    scheduler.onHardwareVsyncRequest(mInnerDisplay->getPhysicalId(), true);
+    scheduler.onHardwareVsyncRequest(mOuterDisplay->getPhysicalId(), true);
+}
+
+} // namespace
+} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_MultiDisplayPacesetterTest.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_MultiDisplayPacesetterTest.cpp
deleted file mode 100644
index e38f56e..0000000
--- a/services/surfaceflinger/tests/unittests/SurfaceFlinger_MultiDisplayPacesetterTest.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#undef LOG_TAG
-#define LOG_TAG "LibSurfaceFlingerUnittests"
-
-#include "DisplayTransactionTestHelpers.h"
-
-#include <gmock/gmock.h>
-#include <gtest/gtest.h>
-
-namespace android {
-namespace {
-
-struct MultiDisplayPacesetterTest : DisplayTransactionTest {
-    static constexpr bool kWithMockScheduler = false;
-    MultiDisplayPacesetterTest() : DisplayTransactionTest(kWithMockScheduler) {}
-};
-
-TEST_F(MultiDisplayPacesetterTest, foldable) {
-    injectMockScheduler(InnerDisplayVariant::DISPLAY_ID::get());
-
-    // Inject inner and outer displays with uninitialized power modes.
-    sp<DisplayDevice> innerDisplay, outerDisplay;
-    constexpr bool kInitPowerMode = false;
-    {
-        InnerDisplayVariant::injectHwcDisplay<kInitPowerMode>(this);
-        auto injector = InnerDisplayVariant::makeFakeExistingDisplayInjector(this);
-        injector.setPowerMode(std::nullopt);
-        injector.setRefreshRateSelector(mFlinger.scheduler()->refreshRateSelector());
-        innerDisplay = injector.inject();
-    }
-    {
-        OuterDisplayVariant::injectHwcDisplay<kInitPowerMode>(this);
-        auto injector = OuterDisplayVariant::makeFakeExistingDisplayInjector(this);
-        injector.setPowerMode(std::nullopt);
-        outerDisplay = injector.inject();
-    }
-
-    // When the device boots, the inner display should be the pacesetter.
-    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), innerDisplay->getPhysicalId());
-
-    // ...and should still be after powering on.
-    mFlinger.setPowerModeInternal(innerDisplay, PowerMode::ON);
-    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), innerDisplay->getPhysicalId());
-
-    // The outer display should become the pacesetter after folding.
-    mFlinger.setPowerModeInternal(innerDisplay, PowerMode::OFF);
-    mFlinger.setPowerModeInternal(outerDisplay, PowerMode::ON);
-    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), outerDisplay->getPhysicalId());
-
-    // The inner display should become the pacesetter after unfolding.
-    mFlinger.setPowerModeInternal(outerDisplay, PowerMode::OFF);
-    mFlinger.setPowerModeInternal(innerDisplay, PowerMode::ON);
-    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), innerDisplay->getPhysicalId());
-
-    // The inner display should stay the pacesetter if both are powered on.
-    // TODO(b/255635821): The pacesetter should depend on the displays' refresh rates.
-    mFlinger.setPowerModeInternal(outerDisplay, PowerMode::ON);
-    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), innerDisplay->getPhysicalId());
-
-    // The outer display should become the pacesetter if designated.
-    mFlinger.scheduler()->setPacesetterDisplay(outerDisplay->getPhysicalId());
-    ASSERT_EQ(mFlinger.scheduler()->pacesetterDisplayId(), outerDisplay->getPhysicalId());
-}
-
-} // namespace
-} // namespace android
diff --git a/services/surfaceflinger/tests/unittests/SurfaceFlinger_SetPowerModeInternalTest.cpp b/services/surfaceflinger/tests/unittests/SurfaceFlinger_SetPowerModeInternalTest.cpp
index 7754c21..4780e49 100644
--- a/services/surfaceflinger/tests/unittests/SurfaceFlinger_SetPowerModeInternalTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SurfaceFlinger_SetPowerModeInternalTest.cpp
@@ -61,7 +61,7 @@
 struct EventThreadBaseSupportedVariant {
     static void setupVsyncNoCallExpectations(DisplayTransactionTest* test) {
         // Expect no change to hardware nor synthetic VSYNC.
-        EXPECT_CALL(test->mFlinger.mockSchedulerCallback(), setVsyncEnabled(_, _)).Times(0);
+        EXPECT_CALL(test->mFlinger.scheduler()->mockRequestHardwareVsync, Call(_, _)).Times(0);
         EXPECT_CALL(*test->mEventThread, enableSyntheticVsync(_)).Times(0);
     }
 };
@@ -79,30 +79,28 @@
 struct EventThreadIsSupportedVariant : public EventThreadBaseSupportedVariant {
     static void setupEnableVsyncCallExpectations(DisplayTransactionTest* test) {
         // Expect to enable hardware VSYNC and disable synthetic VSYNC.
-        EXPECT_CALL(test->mFlinger.mockSchedulerCallback(), setVsyncEnabled(_, true)).Times(1);
+        EXPECT_CALL(test->mFlinger.scheduler()->mockRequestHardwareVsync, Call(_, true)).Times(1);
         EXPECT_CALL(*test->mEventThread, enableSyntheticVsync(false)).Times(1);
     }
 
     static void setupDisableVsyncCallExpectations(DisplayTransactionTest* test) {
         // Expect to disable hardware VSYNC and enable synthetic VSYNC.
-        EXPECT_CALL(test->mFlinger.mockSchedulerCallback(), setVsyncEnabled(_, false)).Times(1);
+        EXPECT_CALL(test->mFlinger.scheduler()->mockRequestHardwareVsync, Call(_, false)).Times(1);
         EXPECT_CALL(*test->mEventThread, enableSyntheticVsync(true)).Times(1);
     }
 };
 
 struct DispSyncIsSupportedVariant {
-    static void setupResetModelCallExpectations(DisplayTransactionTest* test) {
+    static void setupStartPeriodTransitionCallExpectations(DisplayTransactionTest* test) {
         auto vsyncSchedule = test->mFlinger.scheduler()->getVsyncSchedule();
         EXPECT_CALL(static_cast<mock::VsyncController&>(vsyncSchedule->getController()),
                     startPeriodTransition(DEFAULT_VSYNC_PERIOD, false))
                 .Times(1);
-        EXPECT_CALL(static_cast<mock::VSyncTracker&>(vsyncSchedule->getTracker()), resetModel())
-                .Times(1);
     }
 };
 
 struct DispSyncNotSupportedVariant {
-    static void setupResetModelCallExpectations(DisplayTransactionTest* /* test */) {}
+    static void setupStartPeriodTransitionCallExpectations(DisplayTransactionTest* /* test */) {}
 };
 
 // --------------------------------------------------------------------
@@ -125,7 +123,7 @@
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::setupComposerCallExpectations(test, IComposerClient::PowerMode::ON);
         Case::EventThread::setupEnableVsyncCallExpectations(test);
-        Case::DispSync::setupResetModelCallExpectations(test);
+        Case::DispSync::setupStartPeriodTransitionCallExpectations(test);
         Case::setupRepaintEverythingCallExpectations(test);
     }
 
@@ -186,7 +184,7 @@
     template <typename Case>
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::EventThread::setupEnableVsyncCallExpectations(test);
-        Case::DispSync::setupResetModelCallExpectations(test);
+        Case::DispSync::setupStartPeriodTransitionCallExpectations(test);
         Case::setupComposerCallExpectations(test, Case::Doze::ACTUAL_POWER_MODE_FOR_DOZE);
     }
 };
@@ -204,7 +202,7 @@
     template <typename Case>
     static void setupCallExpectations(DisplayTransactionTest* test) {
         Case::EventThread::setupEnableVsyncCallExpectations(test);
-        Case::DispSync::setupResetModelCallExpectations(test);
+        Case::DispSync::setupStartPeriodTransitionCallExpectations(test);
         Case::setupComposerCallExpectations(test, IComposerClient::PowerMode::ON);
     }
 };
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index 3b6a987..aac11c0 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -27,6 +27,7 @@
 #include "Scheduler/Scheduler.h"
 #include "Scheduler/VSyncTracker.h"
 #include "Scheduler/VsyncController.h"
+#include "Scheduler/VsyncSchedule.h"
 #include "mock/MockVSyncDispatch.h"
 #include "mock/MockVSyncTracker.h"
 #include "mock/MockVsyncController.h"
@@ -80,9 +81,13 @@
                                                    new VsyncSchedule(displayId, std::move(tracker),
                                                                      std::make_shared<
                                                                              mock::VSyncDispatch>(),
-                                                                     std::move(controller))));
+                                                                     std::move(controller),
+                                                                     mockRequestHardwareVsync
+                                                                             .AsStdFunction())));
     }
 
+    testing::MockFunction<void(PhysicalDisplayId, bool)> mockRequestHardwareVsync;
+
     void unregisterDisplay(PhysicalDisplayId displayId) {
         ftl::FakeGuard guard(kMainThreadContext);
         Scheduler::unregisterDisplay(displayId);
@@ -163,11 +168,13 @@
                                           : VsyncSchedule::HwVsyncState::Disabled;
     }
 
+    using Scheduler::onHardwareVsyncRequest;
+
 private:
     // ICompositor overrides:
     void configure() override {}
-    bool commit(TimePoint, VsyncId, TimePoint) override { return false; }
-    void composite(TimePoint, VsyncId) override {}
+    bool commit(const scheduler::FrameTarget&) override { return false; }
+    CompositeResult composite(scheduler::FrameTargeter&) override { return {}; }
     void sample() override {}
 };
 
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 945e488..833984f 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -20,6 +20,11 @@
 #include <chrono>
 #include <variant>
 
+#include <ftl/fake_guard.h>
+#include <ftl/match.h>
+#include <gui/ScreenCaptureResults.h>
+#include <ui/DynamicDisplayInfo.h>
+
 #include <compositionengine/Display.h>
 #include <compositionengine/LayerFECompositionState.h>
 #include <compositionengine/OutputLayer.h>
@@ -27,11 +32,7 @@
 #include <compositionengine/impl/Display.h>
 #include <compositionengine/impl/OutputLayerCompositionState.h>
 #include <compositionengine/mock/DisplaySurface.h>
-#include <ftl/fake_guard.h>
-#include <ftl/match.h>
-#include <gui/ScreenCaptureResults.h>
 
-#include <ui/DynamicDisplayInfo.h>
 #include "DisplayDevice.h"
 #include "FakeVsyncConfiguration.h"
 #include "FrameTracer/FrameTracer.h"
@@ -44,7 +45,6 @@
 #include "Scheduler/RefreshRateSelector.h"
 #include "StartPropertySetThread.h"
 #include "SurfaceFlinger.h"
-#include "SurfaceFlingerDefaultFactory.h"
 #include "TestableScheduler.h"
 #include "mock/DisplayHardware/MockComposer.h"
 #include "mock/DisplayHardware/MockDisplayMode.h"
@@ -360,25 +360,42 @@
         commitTransactionsLocked(eDisplayTransactionNeeded);
     }
 
-    TimePoint commit(TimePoint frameTime, VsyncId vsyncId, TimePoint expectedVsyncTime) {
-        mFlinger->commit(frameTime, vsyncId, expectedVsyncTime);
-        return frameTime;
+    void commit(TimePoint frameTime, VsyncId vsyncId, TimePoint expectedVsyncTime,
+                bool composite = false) {
+        constexpr bool kBackpressureGpuComposition = true;
+        scheduler::FrameTargeter frameTargeter(kBackpressureGpuComposition);
+
+        frameTargeter.beginFrame({.frameBeginTime = frameTime,
+                                  .vsyncId = vsyncId,
+                                  .expectedVsyncTime = expectedVsyncTime,
+                                  .sfWorkDuration = 10ms},
+                                 *mScheduler->getVsyncSchedule());
+
+        mFlinger->commit(frameTargeter.target());
+
+        if (composite) {
+            mFlinger->composite(frameTargeter);
+        }
     }
 
-    TimePoint commit(TimePoint frameTime, VsyncId vsyncId) {
-        return commit(frameTime, vsyncId, frameTime + Period(10ms));
+    void commit(TimePoint frameTime, VsyncId vsyncId, bool composite = false) {
+        return commit(frameTime, vsyncId, frameTime + Period(10ms), composite);
     }
 
-    TimePoint commit() {
+    void commit(bool composite = false) {
         const TimePoint frameTime = scheduler::SchedulerClock::now();
-        return commit(frameTime, kVsyncId);
+        commit(frameTime, kVsyncId, composite);
     }
 
     void commitAndComposite(TimePoint frameTime, VsyncId vsyncId, TimePoint expectedVsyncTime) {
-        mFlinger->composite(commit(frameTime, vsyncId, expectedVsyncTime), vsyncId);
+        constexpr bool kComposite = true;
+        commit(frameTime, vsyncId, expectedVsyncTime, kComposite);
     }
 
-    void commitAndComposite() { mFlinger->composite(commit(), kVsyncId); }
+    void commitAndComposite() {
+        constexpr bool kComposite = true;
+        commit(kComposite);
+    }
 
     auto createDisplay(const String8& displayName, bool secure, float requestedRefreshRate = 0.0f) {
         return mFlinger->createDisplay(displayName, secure, requestedRefreshRate);
diff --git a/services/surfaceflinger/tests/unittests/TransactionProtoParserTest.cpp b/services/surfaceflinger/tests/unittests/TransactionProtoParserTest.cpp
index dd72174..a95a645 100644
--- a/services/surfaceflinger/tests/unittests/TransactionProtoParserTest.cpp
+++ b/services/surfaceflinger/tests/unittests/TransactionProtoParserTest.cpp
@@ -122,7 +122,7 @@
     google::protobuf::RepeatedPtrField<proto::DisplayInfo> displayProtos;
     auto displayInfoProto = displayProtos.Add();
     *displayInfoProto = TransactionProtoParser::toProto(d1, layerStack);
-    display::DisplayMap<ui::LayerStack, frontend::DisplayInfo> displayInfos;
+    frontend::DisplayInfos displayInfos;
     TransactionProtoParser::fromProto(displayProtos, displayInfos);
 
     ASSERT_TRUE(displayInfos.contains(ui::LayerStack::fromValue(layerStack)));
diff --git a/services/surfaceflinger/tests/unittests/TransactionTracingTest.cpp b/services/surfaceflinger/tests/unittests/TransactionTracingTest.cpp
index 92411a7..809966f 100644
--- a/services/surfaceflinger/tests/unittests/TransactionTracingTest.cpp
+++ b/services/surfaceflinger/tests/unittests/TransactionTracingTest.cpp
@@ -37,7 +37,7 @@
     static constexpr size_t SMALL_BUFFER_SIZE = 1024;
     TransactionTracing mTracing;
 
-    void flush(int64_t vsyncId) { mTracing.flush(vsyncId); }
+    void flush() { mTracing.flush(); }
     proto::TransactionTraceFile writeToProto() { return mTracing.writeToProto(); }
 
     proto::TransactionTraceEntry bufferFront() {
@@ -57,7 +57,7 @@
         std::vector<TransactionState> transactions;
         update.transactions.emplace_back(transaction);
         mTracing.addCommittedTransactions(vsyncId, 0, update, {}, false);
-        flush(vsyncId);
+        flush();
     }
 
     void verifyEntry(const proto::TransactionTraceEntry& actualProto,
@@ -116,7 +116,7 @@
     secondUpdate.transactions =
             std::vector<TransactionState>(transactions.begin(), transactions.begin() + 50);
     mTracing.addCommittedTransactions(secondTransactionSetVsyncId, 0, secondUpdate, {}, false);
-    flush(secondTransactionSetVsyncId);
+    flush();
 
     proto::TransactionTraceFile proto = writeToProto();
     ASSERT_EQ(proto.entry().size(), 2);
@@ -158,7 +158,7 @@
             VSYNC_ID_FIRST_LAYER_CHANGE = ++mVsyncId;
             mTracing.addCommittedTransactions(VSYNC_ID_FIRST_LAYER_CHANGE, 0, update, {}, false);
 
-            flush(VSYNC_ID_FIRST_LAYER_CHANGE);
+            flush();
         }
 
         // add transactions that modify the layer state further so we can test that layer state
@@ -178,7 +178,7 @@
             update.transactions.emplace_back(transaction);
             VSYNC_ID_SECOND_LAYER_CHANGE = ++mVsyncId;
             mTracing.addCommittedTransactions(VSYNC_ID_SECOND_LAYER_CHANGE, 0, update, {}, false);
-            flush(VSYNC_ID_SECOND_LAYER_CHANGE);
+            flush();
         }
 
         // remove child layer
@@ -290,7 +290,7 @@
 
             update.transactions.emplace_back(transaction);
             mTracing.addCommittedTransactions(mVsyncId, 0, update, {}, false);
-            flush(mVsyncId);
+            flush();
         }
     }
 
diff --git a/services/surfaceflinger/tests/unittests/VsyncScheduleTest.cpp b/services/surfaceflinger/tests/unittests/VsyncScheduleTest.cpp
index 4010fa6..a8a3cd0 100644
--- a/services/surfaceflinger/tests/unittests/VsyncScheduleTest.cpp
+++ b/services/surfaceflinger/tests/unittests/VsyncScheduleTest.cpp
@@ -25,7 +25,6 @@
 #include <scheduler/Fps.h>
 #include "Scheduler/VsyncSchedule.h"
 #include "ThreadContext.h"
-#include "mock/MockSchedulerCallback.h"
 #include "mock/MockVSyncDispatch.h"
 #include "mock/MockVSyncTracker.h"
 #include "mock/MockVsyncController.h"
@@ -34,20 +33,21 @@
 
 namespace android {
 
-constexpr PhysicalDisplayId DEFAULT_DISPLAY_ID = PhysicalDisplayId::fromPort(42u);
+constexpr PhysicalDisplayId kDisplayId = PhysicalDisplayId::fromPort(42u);
 
 class VsyncScheduleTest : public testing::Test {
 protected:
     VsyncScheduleTest();
     ~VsyncScheduleTest() override;
 
-    scheduler::mock::SchedulerCallback mCallback;
+    testing::MockFunction<void(PhysicalDisplayId, bool)> mRequestHardwareVsync;
+
     const std::unique_ptr<scheduler::VsyncSchedule> mVsyncSchedule =
             std::unique_ptr<scheduler::VsyncSchedule>(
-                    new scheduler::VsyncSchedule(DEFAULT_DISPLAY_ID,
-                                                 std::make_shared<mock::VSyncTracker>(),
+                    new scheduler::VsyncSchedule(kDisplayId, std::make_shared<mock::VSyncTracker>(),
                                                  std::make_shared<mock::VSyncDispatch>(),
-                                                 std::make_unique<mock::VsyncController>()));
+                                                 std::make_unique<mock::VsyncController>(),
+                                                 mRequestHardwareVsync.AsStdFunction()));
 
     mock::VsyncController& getController() {
         return *static_cast<mock::VsyncController*>(&mVsyncSchedule->getController());
@@ -75,21 +75,21 @@
 }
 
 TEST_F(VsyncScheduleTest, EnableDoesNothingWhenDisallowed) {
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
 
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 }
 
 TEST_F(VsyncScheduleTest, DisableDoesNothingWhenDisallowed) {
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
 
-    mVsyncSchedule->disableHardwareVsync(mCallback, false /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(false /* disallow */);
 }
 
 TEST_F(VsyncScheduleTest, DisableDoesNothingWhenDisallowed2) {
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
 
-    mVsyncSchedule->disableHardwareVsync(mCallback, true /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(true /* disallow */);
 }
 
 TEST_F(VsyncScheduleTest, MakeAllowed) {
@@ -98,33 +98,33 @@
 
 TEST_F(VsyncScheduleTest, DisableDoesNothingWhenDisabled) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
 
-    mVsyncSchedule->disableHardwareVsync(mCallback, false /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(false /* disallow */);
 }
 
 TEST_F(VsyncScheduleTest, DisableDoesNothingWhenDisabled2) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
 
-    mVsyncSchedule->disableHardwareVsync(mCallback, true /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(true /* disallow */);
 }
 
 TEST_F(VsyncScheduleTest, EnableWorksWhenDisabled) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, true));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, true));
 
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 }
 
 TEST_F(VsyncScheduleTest, EnableWorksOnce) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, true));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, true));
 
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
+    mVsyncSchedule->enableHardwareVsync();
 }
 
 TEST_F(VsyncScheduleTest, AllowedIsSticky) {
@@ -134,22 +134,22 @@
 
 TEST_F(VsyncScheduleTest, EnableDisable) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, true));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, true));
 
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, false));
-    mVsyncSchedule->disableHardwareVsync(mCallback, false /* disallow */);
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, false));
+    mVsyncSchedule->disableHardwareVsync(false /* disallow */);
 }
 
 TEST_F(VsyncScheduleTest, EnableDisable2) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, true));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, true));
 
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, false));
-    mVsyncSchedule->disableHardwareVsync(mCallback, true /* disallow */);
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, false));
+    mVsyncSchedule->disableHardwareVsync(true /* disallow */);
 }
 
 TEST_F(VsyncScheduleTest, StartPeriodTransition) {
@@ -159,22 +159,22 @@
 
     const Period period = (60_Hz).getPeriod();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, true));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, true));
     EXPECT_CALL(getController(), startPeriodTransition(period.ns(), false));
 
-    mVsyncSchedule->startPeriodTransition(mCallback, period, false);
+    mVsyncSchedule->startPeriodTransition(period, false);
 }
 
 TEST_F(VsyncScheduleTest, StartPeriodTransitionAlreadyEnabled) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 
     const Period period = (60_Hz).getPeriod();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
     EXPECT_CALL(getController(), startPeriodTransition(period.ns(), false));
 
-    mVsyncSchedule->startPeriodTransition(mCallback, period, false);
+    mVsyncSchedule->startPeriodTransition(period, false);
 }
 
 TEST_F(VsyncScheduleTest, StartPeriodTransitionForce) {
@@ -182,20 +182,20 @@
 
     const Period period = (60_Hz).getPeriod();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, true));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, true));
     EXPECT_CALL(getController(), startPeriodTransition(period.ns(), true));
 
-    mVsyncSchedule->startPeriodTransition(mCallback, period, true);
+    mVsyncSchedule->startPeriodTransition(period, true);
 }
 
 TEST_F(VsyncScheduleTest, AddResyncSampleDisallowed) {
     const Period period = (60_Hz).getPeriod();
     const auto timestamp = TimePoint::now();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
     EXPECT_CALL(getController(), addHwVsyncTimestamp(_, _, _)).Times(0);
 
-    mVsyncSchedule->addResyncSample(mCallback, timestamp, period);
+    mVsyncSchedule->addResyncSample(timestamp, period);
 }
 
 TEST_F(VsyncScheduleTest, AddResyncSampleDisabled) {
@@ -203,40 +203,40 @@
     const Period period = (60_Hz).getPeriod();
     const auto timestamp = TimePoint::now();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
     EXPECT_CALL(getController(), addHwVsyncTimestamp(_, _, _)).Times(0);
 
-    mVsyncSchedule->addResyncSample(mCallback, timestamp, period);
+    mVsyncSchedule->addResyncSample(timestamp, period);
 }
 
 TEST_F(VsyncScheduleTest, AddResyncSampleReturnsTrue) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 
     const Period period = (60_Hz).getPeriod();
     const auto timestamp = TimePoint::now();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(_, _)).Times(0);
+    EXPECT_CALL(mRequestHardwareVsync, Call(_, _)).Times(0);
     EXPECT_CALL(getController(),
                 addHwVsyncTimestamp(timestamp.ns(), std::optional<nsecs_t>(period.ns()), _))
             .WillOnce(Return(true));
 
-    mVsyncSchedule->addResyncSample(mCallback, timestamp, period);
+    mVsyncSchedule->addResyncSample(timestamp, period);
 }
 
 TEST_F(VsyncScheduleTest, AddResyncSampleReturnsFalse) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    mVsyncSchedule->enableHardwareVsync(mCallback);
+    mVsyncSchedule->enableHardwareVsync();
 
     const Period period = (60_Hz).getPeriod();
     const auto timestamp = TimePoint::now();
 
-    EXPECT_CALL(mCallback, setVsyncEnabled(DEFAULT_DISPLAY_ID, false));
+    EXPECT_CALL(mRequestHardwareVsync, Call(kDisplayId, false));
     EXPECT_CALL(getController(),
                 addHwVsyncTimestamp(timestamp.ns(), std::optional<nsecs_t>(period.ns()), _))
             .WillOnce(Return(false));
 
-    mVsyncSchedule->addResyncSample(mCallback, timestamp, period);
+    mVsyncSchedule->addResyncSample(timestamp, period);
 }
 
 TEST_F(VsyncScheduleTest, PendingState) FTL_FAKE_GUARD(kMainThreadContext) {
@@ -250,19 +250,19 @@
 
 TEST_F(VsyncScheduleTest, DisableDoesNotMakeAllowed) {
     ASSERT_FALSE(mVsyncSchedule->isHardwareVsyncAllowed(false /* makeAllowed */));
-    mVsyncSchedule->disableHardwareVsync(mCallback, false /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(false /* disallow */);
     ASSERT_FALSE(mVsyncSchedule->isHardwareVsyncAllowed(false /* makeAllowed */));
 }
 
 TEST_F(VsyncScheduleTest, DisallowMakesNotAllowed) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    mVsyncSchedule->disableHardwareVsync(mCallback, true /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(true /* disallow */);
     ASSERT_FALSE(mVsyncSchedule->isHardwareVsyncAllowed(false /* makeAllowed */));
 }
 
 TEST_F(VsyncScheduleTest, StillAllowedAfterDisable) {
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(true /* makeAllowed */));
-    mVsyncSchedule->disableHardwareVsync(mCallback, false /* disallow */);
+    mVsyncSchedule->disableHardwareVsync(false /* disallow */);
     ASSERT_TRUE(mVsyncSchedule->isHardwareVsyncAllowed(false /* makeAllowed */));
 }
 
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerHalController.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerHalController.h
index 358395d..8e22f43 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerHalController.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockPowerHalController.h
@@ -39,6 +39,7 @@
 public:
     MockPowerHalController();
     ~MockPowerHalController() override;
+    MOCK_METHOD(void, init, (), (override));
     MOCK_METHOD(HalResult<void>, setBoost, (Boost, int32_t), (override));
     MOCK_METHOD(HalResult<void>, setMode, (Mode, bool), (override));
     MOCK_METHOD(HalResult<sp<hardware::power::IPowerHintSession>>, createHintSession,
diff --git a/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h b/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h
index a8eca21..306eb4d 100644
--- a/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h
+++ b/services/surfaceflinger/tests/unittests/mock/MockSchedulerCallback.h
@@ -23,14 +23,14 @@
 namespace android::scheduler::mock {
 
 struct SchedulerCallback final : ISchedulerCallback {
-    MOCK_METHOD(void, setVsyncEnabled, (PhysicalDisplayId, bool), (override));
+    MOCK_METHOD(void, requestHardwareVsync, (PhysicalDisplayId, bool), (override));
     MOCK_METHOD(void, requestDisplayModes, (std::vector<display::DisplayModeRequest>), (override));
     MOCK_METHOD(void, kernelTimerChanged, (bool), (override));
     MOCK_METHOD(void, triggerOnFrameRateOverridesChanged, (), (override));
 };
 
 struct NoOpSchedulerCallback final : ISchedulerCallback {
-    void setVsyncEnabled(PhysicalDisplayId, bool) override {}
+    void requestHardwareVsync(PhysicalDisplayId, bool) override {}
     void requestDisplayModes(std::vector<display::DisplayModeRequest>) override {}
     void kernelTimerChanged(bool) override {}
     void triggerOnFrameRateOverridesChanged() override {}