Metirc FPS by compare drawn time with each frame (942dab6a) · Commits · e / os / android_frameworks_base

core/java/android/view/ViewRootImpl.java

+37 −0

Original line number	Diff line number	Diff line
		@@ -96,6 +96,7 @@ import static android.view.accessibility.Flags.reduceWindowContentChangedEventTh
		import static android.view.inputmethod.InputMethodEditorTraceProto.InputMethodClientsTraceProto.ClientSideProto.IME_FOCUS_CONTROLLER;
		import static android.view.inputmethod.InputMethodEditorTraceProto.InputMethodClientsTraceProto.ClientSideProto.INSETS_CONTROLLER;
		import static android.view.flags.Flags.toolkitSetFrameRateReadOnly;
		import static android.view.flags.Flags.toolkitMetricsForFrameRateDecision;

		import android.Manifest;
		import android.accessibilityservice.AccessibilityService;
		@@ -372,6 +373,8 @@ public final class ViewRootImpl implements ViewParent,
		*/
		private static final int KEEP_CLEAR_AREA_REPORT_RATE_MILLIS = 100;

		private static final long NANOS_PER_SEC = 1000000000;

		@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
		static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>();

		@@ -819,6 +822,8 @@ public final class ViewRootImpl implements ViewParent,

		private boolean mInsetsAnimationRunning;

		private long mPreviousFrameDrawnTime = -1;

		/**
		* The resolved pointer icon type requested by this window.
		* A null value indicates the resolved pointer icon has not yet been calculated.
		@@ -1048,11 +1053,14 @@ public final class ViewRootImpl implements ViewParent,
		private boolean mChildBoundingInsetsChanged = false;

		private String mTag = TAG;
		private String mFpsTraceName;

		private static boolean sToolkitSetFrameRateReadOnlyFlagValue;
		private static boolean sToolkitMetricsForFrameRateDecisionFlagValue;

		static {
		sToolkitSetFrameRateReadOnlyFlagValue = toolkitSetFrameRateReadOnly();
		sToolkitMetricsForFrameRateDecisionFlagValue = toolkitMetricsForFrameRateDecision();
		}

		public ViewRootImpl(Context context, Display display) {
		@@ -1293,6 +1301,7 @@ public final class ViewRootImpl implements ViewParent,

		attrs = mWindowAttributes;
		setTag();
		mFpsTraceName = "FPS of " + getTitle();

		if (DEBUG_KEEP_SCREEN_ON && (mClientWindowLayoutFlags
		& WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) != 0
		@@ -4660,6 +4669,31 @@ public final class ViewRootImpl implements ViewParent,
		}
		}

		/**
		* Called from draw() to collect metrics for frame rate decision.
		*/
		private void collectFrameRateDecisionMetrics() {
		if (!Trace.isEnabled()) {
		if (mPreviousFrameDrawnTime > 0) mPreviousFrameDrawnTime = -1;
		return;
		}

		if (mPreviousFrameDrawnTime < 0) {
		mPreviousFrameDrawnTime = mChoreographer.getExpectedPresentationTimeNanos();
		return;
		}

		long expectedDrawnTime = mChoreographer.getExpectedPresentationTimeNanos();
		long timeDiff = expectedDrawnTime - mPreviousFrameDrawnTime;
		if (timeDiff <= 0) {
		return;
		}

		long fps = NANOS_PER_SEC / timeDiff;
		Trace.setCounter(mFpsTraceName, fps);
		mPreviousFrameDrawnTime = expectedDrawnTime;
		}

		private void reportDrawFinished(@Nullable Transaction t, int seqId) {
		if (DEBUG_BLAST) {
		Log.d(mTag, "reportDrawFinished");
		@@ -4978,6 +5012,9 @@ public final class ViewRootImpl implements ViewParent,
		if (DEBUG_FPS) {
		trackFPS();
		}
		if (sToolkitMetricsForFrameRateDecisionFlagValue) {
		collectFrameRateDecisionMetrics();
		}

		if (!sFirstDrawComplete) {
		synchronized (sFirstDrawHandlers) {

core/java/android/view/flags/refresh_rate_flags.aconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -43,3 +43,11 @@ flag {
		description: "Enable the `setFrameRate` callback"
		bug: "299946220"
		}

		flag {
		name: "toolkit_metrics_for_frame_rate_decision"
		namespace: "toolkit"
		description: "Feature flag for toolkit metrics collecting for frame rate decision"
		bug: "301343249"
		is_fixed_read_only: true
		}
		No newline at end of file