Set frame rate category as HIGH when a View has a velocity

Set frame rate category as HIGH when a View has a velocity

Bug: 296457810
Test: atest ViewRootImplTest
Change-Id: Ia4edbb2a03dcc1c8cbd6a70664157d303640e0a3

2 files changed, 46 insertions, 2 deletions

diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 6d8524d5f2e2..fab2db9f2bc1 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -12357,7 +12357,9 @@ public final class ViewRootImpl implements ViewParent,
         // For now, FRAME_RATE_CATEGORY_HIGH_HINT is used for boosting with user interaction.
         // FRAME_RATE_CATEGORY_HIGH is for boosting without user interaction
         // (e.g., Window Initialization).
-        if (mIsFrameRateBoosting || mInsetsAnimationRunning) {
+        if (mIsFrameRateBoosting || mInsetsAnimationRunning
+                || (mFrameRateCompatibility == FRAME_RATE_COMPATIBILITY_GTE
+                        && mPreferredFrameRate > 0)) {
             frameRateCategory = FRAME_RATE_CATEGORY_HIGH;
         }
 
@@ -12380,7 +12382,8 @@ public final class ViewRootImpl implements ViewParent,
     }
 
     private void setPreferredFrameRate(float preferredFrameRate) {
-        if (!shouldSetFrameRate()) {
+        if (!shouldSetFrameRate() || (mFrameRateCompatibility == FRAME_RATE_COMPATIBILITY_GTE
+                && preferredFrameRate > 0)) {
             return;
         }
 
@@ -12540,6 +12543,14 @@ public final class ViewRootImpl implements ViewParent,
     }
 
     /**
+     * Get the value of mLastPreferredFrameRate
+     */
+    @VisibleForTesting
+    public float getLastPreferredFrameRate() {
+        return mLastPreferredFrameRate;
+    }
+
+    /**
      * Returns whether touch boost is currently enabled.
      */
     @VisibleForTesting
diff --git a/core/tests/coretests/src/android/view/ViewRootImplTest.java b/core/tests/coretests/src/android/view/ViewRootImplTest.java
index 1a242eff73b1..2544fcb81692 100644
--- a/core/tests/coretests/src/android/view/ViewRootImplTest.java
+++ b/core/tests/coretests/src/android/view/ViewRootImplTest.java
@@ -19,6 +19,7 @@ package android.view;
 import static android.view.accessibility.Flags.FLAG_FORCE_INVERT_COLOR;
 import static android.view.flags.Flags.FLAG_TOOLKIT_SET_FRAME_RATE_READ_ONLY;
 import static android.view.flags.Flags.FLAG_TOOLKIT_FRAME_RATE_BY_SIZE_READ_ONLY;
+import static android.view.flags.Flags.FLAG_VIEW_VELOCITY_API;
 import static android.view.Surface.FRAME_RATE_CATEGORY_HIGH;
 import static android.view.Surface.FRAME_RATE_CATEGORY_HIGH_HINT;
 import static android.view.Surface.FRAME_RATE_CATEGORY_LOW;
@@ -796,6 +797,38 @@ public class ViewRootImplTest {
     }
 
     /**
+     * When velocity of a View is not equal to 0, we call setFrameRateCategory with HIGH.
+     * Also, we shouldn't call setFrameRate.
+     */
+    @Test
+    @RequiresFlagsEnabled({FLAG_TOOLKIT_SET_FRAME_RATE_READ_ONLY, FLAG_VIEW_VELOCITY_API})
+    public void votePreferredFrameRate_voteFrameRateCategory_velocityToHigh() {
+        View view = new View(sContext);
+        WindowManager.LayoutParams wmlp = new WindowManager.LayoutParams(TYPE_APPLICATION_OVERLAY);
+        wmlp.token = new Binder(); // Set a fake token to bypass 'is your activity running' check
+        wmlp.width = 1;
+        wmlp.height = 1;
+
+        sInstrumentation.runOnMainSync(() -> {
+            WindowManager wm = sContext.getSystemService(WindowManager.class);
+            wm.addView(view, wmlp);
+        });
+        sInstrumentation.waitForIdleSync();
+
+        ViewRootImpl viewRootImpl = view.getViewRootImpl();
+
+        sInstrumentation.runOnMainSync(() -> {
+            assertEquals(viewRootImpl.getPreferredFrameRate(), 0, 0.1);
+            view.setFrameContentVelocity(100);
+            view.invalidate();
+            assertTrue(viewRootImpl.getPreferredFrameRate() > 0);
+        });
+        sInstrumentation.waitForIdleSync();
+        assertEquals(viewRootImpl.getLastPreferredFrameRateCategory(), FRAME_RATE_CATEGORY_HIGH);
+        assertEquals(viewRootImpl.getLastPreferredFrameRate(), 0 , 0.1);
+    }
+
+    /**
      * We should boost the frame rate if the value of mInsetsAnimationRunning is true.
      */
     @Test