Merge "Use the correct Frame Rate Compatibility for setFrameRate API call" into main
diff --git a/core/java/android/view/TextureView.java b/core/java/android/view/TextureView.java
index 021bbf7..896b3f4 100644
--- a/core/java/android/view/TextureView.java
+++ b/core/java/android/view/TextureView.java
@@ -196,8 +196,6 @@
     private Canvas mCanvas;
     private int mSaveCount;
 
-    @Surface.FrameRateCompatibility int mFrameRateCompatibility;
-
     private final Object[] mNativeWindowLock = new Object[0];
     // Set by native code, do not write!
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 06dc275..383d631 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -24,6 +24,7 @@
 import static android.view.Surface.FRAME_RATE_CATEGORY_LOW;
 import static android.view.Surface.FRAME_RATE_CATEGORY_NORMAL;
 import static android.view.Surface.FRAME_RATE_CATEGORY_NO_PREFERENCE;
+import static android.view.Surface.FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
 import static android.view.accessibility.AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED;
 import static android.view.displayhash.DisplayHashResultCallback.DISPLAY_HASH_ERROR_INVALID_BOUNDS;
 import static android.view.displayhash.DisplayHashResultCallback.DISPLAY_HASH_ERROR_MISSING_WINDOW;
@@ -2368,6 +2369,9 @@
 
     private static boolean sToolkitSetFrameRateReadOnlyFlagValue;
     private static boolean sToolkitMetricsForFrameRateDecisionFlagValue;
+    // Used to set frame rate compatibility.
+    @Surface.FrameRateCompatibility int mFrameRateCompatibility =
+            FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
 
     static {
         EMPTY_STATE_SET = StateSet.get(0);
@@ -33538,7 +33542,8 @@
                         frameRateCateogry = FRAME_RATE_CATEGORY_HIGH;
                     }
                 } else {
-                    viewRootImpl.votePreferredFrameRate(mPreferredFrameRate);
+                    viewRootImpl.votePreferredFrameRate(mPreferredFrameRate,
+                            mFrameRateCompatibility);
                     return;
                 }
             }
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 1e79786..94260b2 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -30,6 +30,7 @@
 import static android.view.Surface.FRAME_RATE_CATEGORY_LOW;
 import static android.view.Surface.FRAME_RATE_CATEGORY_NORMAL;
 import static android.view.Surface.FRAME_RATE_CATEGORY_NO_PREFERENCE;
+import static android.view.Surface.FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
 import static android.view.View.PFLAG_DRAW_ANIMATION;
 import static android.view.View.SYSTEM_UI_FLAG_FULLSCREEN;
 import static android.view.View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
@@ -1027,6 +1028,13 @@
     // as needed and can be useful for power saving.
     // Should not enable the dVRR feature if the value is false.
     private boolean mIsFrameRatePowerSavingsBalanced = true;
+    // Used to check if there is a conflict between different frame rate voting.
+    // Take 24 and 30 as an example, 24 is not a divisor of 30.
+    // We consider there is a conflict.
+    private boolean mIsFrameRateConflicted = false;
+    // Used to set frame rate compatibility.
+    @Surface.FrameRateCompatibility int mFrameRateCompatibility =
+            FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
     // time for touch boost period.
     private static final int FRAME_RATE_TOUCH_BOOST_TIME = 3000;
     // time for checking idle status periodically.
@@ -4110,6 +4118,7 @@
                 ? mFrameRateCategoryLowCount - 1 : mFrameRateCategoryLowCount;
         mPreferredFrameRateCategory = FRAME_RATE_CATEGORY_NO_PREFERENCE;
         mPreferredFrameRate = -1;
+        mIsFrameRateConflicted = false;
     }
 
     private void createSyncIfNeeded() {
@@ -6508,6 +6517,7 @@
                     break;
                 case MSG_FRAME_RATE_SETTING:
                     mPreferredFrameRate = 0;
+                    mFrameRateCompatibility = FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
                     setPreferredFrameRate(mPreferredFrameRate);
                     break;
             }
@@ -12286,9 +12296,15 @@
         if (!shouldSetFrameRateCategory()) {
             return;
         }
+        int categoryFromConflictedFrameRates = FRAME_RATE_CATEGORY_NO_PREFERENCE;
+        if (mIsFrameRateConflicted) {
+            categoryFromConflictedFrameRates = mPreferredFrameRate > 60
+                    ? FRAME_RATE_CATEGORY_HIGH : FRAME_RATE_CATEGORY_NORMAL;
+        }
 
         int frameRateCategory = mIsTouchBoosting
-                ? FRAME_RATE_CATEGORY_HIGH_HINT : preferredFrameRateCategory;
+                ? FRAME_RATE_CATEGORY_HIGH_HINT
+                : Math.max(preferredFrameRateCategory, categoryFromConflictedFrameRates);
 
         // FRAME_RATE_CATEGORY_HIGH has a higher precedence than FRAME_RATE_CATEGORY_HIGH_HINT
         // For now, FRAME_RATE_CATEGORY_HIGH_HINT is used for boosting with user interaction.
@@ -12338,7 +12354,7 @@
                                 + preferredFrameRate);
                 }
                 mFrameRateTransaction.setFrameRate(mSurfaceControl, preferredFrameRate,
-                    Surface.FRAME_RATE_COMPATIBILITY_DEFAULT).applyAsyncUnsafe();
+                    mFrameRateCompatibility).applyAsyncUnsafe();
                 mLastPreferredFrameRate = preferredFrameRate;
             }
         } catch (Exception e) {
@@ -12361,7 +12377,8 @@
 
     private boolean shouldSetFrameRate() {
         // use toolkitSetFrameRate flag to gate the change
-        return mSurface.isValid() && mPreferredFrameRate > 0 && shouldEnableDvrr();
+        return mSurface.isValid() && mPreferredFrameRate > 0
+                && shouldEnableDvrr() && !mIsFrameRateConflicted;
     }
 
     private boolean shouldTouchBoost(int motionEventAction, int windowType) {
@@ -12404,29 +12421,45 @@
     }
 
     /**
-     * Allow Views to vote for the preferred frame rate
+     * Allow Views to vote for the preferred frame rate and compatibility.
      * When determining the preferred frame rate value,
      * we follow this logic: If no preferred frame rate has been set yet,
      * we assign the value of frameRate as the preferred frame rate.
-     * If either the current or the new preferred frame rate exceeds 60 Hz,
-     * we select the higher value between them.
-     * However, if both values are 60 Hz or lower, we set the preferred frame rate
-     * to 60 Hz to maintain optimal performance.
+     * IF there are multiple frame rates are voted:
+     * 1. There is a frame rate is a multiple of all other frame rates.
+     * We choose this frmae rate to be the one to be set.
+     * 2. There is no frame rate can be a multiple of others
+     * We set category to HIGH if the maximum frame rate is greater than 60.
+     * Otherwise, we set category to NORMAL.
+     *
+     * Use FRAME_RATE_COMPATIBILITY_GTE for velocity and FRAME_RATE_COMPATIBILITY_FIXED_SOURCE
+     * for TextureView video play and user requested frame rate.
      *
      * @param frameRate the preferred frame rate of a View
+     * @param frameRateCompatibility the preferred frame rate compatibility of a View
      */
     @VisibleForTesting(visibility = VisibleForTesting.Visibility.PROTECTED)
-    public void votePreferredFrameRate(float frameRate) {
+    public void votePreferredFrameRate(float frameRate, int frameRateCompatibility) {
         if (frameRate <= 0) {
             return;
         }
+        if (mPreferredFrameRate > 0 && mPreferredFrameRate % frameRate != 0
+                && frameRate % mPreferredFrameRate != 0) {
+            mIsFrameRateConflicted = true;
+            mFrameRateCompatibility = FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
+        }
+        if (frameRate > mPreferredFrameRate) {
+            mFrameRateCompatibility = frameRateCompatibility;
+        }
 
         mPreferredFrameRate = Math.max(mPreferredFrameRate, frameRate);
-
         mHasInvalidation = true;
-        mHandler.removeMessages(MSG_FRAME_RATE_SETTING);
-        mHandler.sendEmptyMessageDelayed(MSG_FRAME_RATE_SETTING,
-                FRAME_RATE_SETTING_REEVALUATE_TIME);
+
+        if (!mIsFrameRateConflicted) {
+            mHandler.removeMessages(MSG_FRAME_RATE_SETTING);
+            mHandler.sendEmptyMessageDelayed(MSG_FRAME_RATE_SETTING,
+                    FRAME_RATE_SETTING_REEVALUATE_TIME);
+        }
     }
 
     /**
@@ -12454,6 +12487,14 @@
     }
 
     /**
+     * Get the value of mFrameRateCompatibility
+     */
+    @VisibleForTesting
+    public int getFrameRateCompatibility() {
+        return mFrameRateCompatibility;
+    }
+
+    /**
      * Get the value of mIsFrameRateBoosting
      */
     @VisibleForTesting
@@ -12503,6 +12544,15 @@
     }
 
     /**
+     * Get the value of mIsFrameRateConflicted
+     * Can be used to checked if there is a conflict of frame rate votes.
+     */
+    @VisibleForTesting
+    public boolean isFrameRateConflicted() {
+        return mIsFrameRateConflicted;
+    }
+
+    /**
      * Set the value of mIsFrameRatePowerSavingsBalanced
      * Can be used to checked if toolkit dVRR feature is enabled.
      */
diff --git a/core/tests/coretests/src/android/view/ViewRootImplTest.java b/core/tests/coretests/src/android/view/ViewRootImplTest.java
index 038c00e..64cbe7f 100644
--- a/core/tests/coretests/src/android/view/ViewRootImplTest.java
+++ b/core/tests/coretests/src/android/view/ViewRootImplTest.java
@@ -24,6 +24,8 @@
 import static android.view.Surface.FRAME_RATE_CATEGORY_LOW;
 import static android.view.Surface.FRAME_RATE_CATEGORY_NORMAL;
 import static android.view.Surface.FRAME_RATE_CATEGORY_NO_PREFERENCE;
+import static android.view.Surface.FRAME_RATE_COMPATIBILITY_FIXED_SOURCE;
+import static android.view.Surface.FRAME_RATE_COMPATIBILITY_GTE;
 import static android.view.View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
 import static android.view.View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
 import static android.view.View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
@@ -705,17 +707,51 @@
     public void votePreferredFrameRate_voteFrameRate_aggregate() {
         View view = new View(sContext);
         attachViewToWindow(view);
+        ViewRootImpl viewRootImpl = view.getViewRootImpl();
         sInstrumentation.runOnMainSync(() -> {
-            ViewRootImpl viewRootImpl = view.getViewRootImpl();
             assertEquals(viewRootImpl.getPreferredFrameRate(), 0, 0.1);
-            viewRootImpl.votePreferredFrameRate(24);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+            viewRootImpl.votePreferredFrameRate(24, FRAME_RATE_COMPATIBILITY_GTE);
             assertEquals(viewRootImpl.getPreferredFrameRate(), 24, 0.1);
-            viewRootImpl.votePreferredFrameRate(30);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_GTE);
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+            viewRootImpl.votePreferredFrameRate(30, FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
             assertEquals(viewRootImpl.getPreferredFrameRate(), 30, 0.1);
-            viewRootImpl.votePreferredFrameRate(60);
+            // If there is a conflict, then set compatibility to
+            // FRAME_RATE_COMPATIBILITY_FIXED_SOURCE
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            // Should be true since there is a conflict between 24 and 30.
+            assertEquals(viewRootImpl.isFrameRateConflicted(), true);
+            view.invalidate();
+        });
+        sInstrumentation.waitForIdleSync();
+
+        sInstrumentation.runOnMainSync(() -> {
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+            viewRootImpl.votePreferredFrameRate(60, FRAME_RATE_COMPATIBILITY_GTE);
             assertEquals(viewRootImpl.getPreferredFrameRate(), 60, 0.1);
-            viewRootImpl.votePreferredFrameRate(120);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_GTE);
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+            viewRootImpl.votePreferredFrameRate(120, FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
             assertEquals(viewRootImpl.getPreferredFrameRate(), 120, 0.1);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            // Should be false since 60 is a divisor of 120.
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+            viewRootImpl.votePreferredFrameRate(60, FRAME_RATE_COMPATIBILITY_GTE);
+            assertEquals(viewRootImpl.getPreferredFrameRate(), 120, 0.1);
+            // compatibility should be remained the same (FRAME_RATE_COMPATIBILITY_FIXED_SOURCE)
+            // since the frame rate 60 is smaller than 120.
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            // Should be false since 60 is a divisor of 120.
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+
         });
     }
 
@@ -842,14 +878,26 @@
 
         sInstrumentation.runOnMainSync(() -> {
             assertEquals(viewRootImpl.getPreferredFrameRate(), 0, 0.1);
-            viewRootImpl.votePreferredFrameRate(24);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
+            viewRootImpl.votePreferredFrameRate(24, FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
             assertEquals(viewRootImpl.getPreferredFrameRate(), 24, 0.1);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
             view.invalidate();
             assertEquals(viewRootImpl.getPreferredFrameRate(), 24, 0.1);
+            assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                    FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+            assertEquals(viewRootImpl.isFrameRateConflicted(), false);
         });
 
         Thread.sleep(delay);
         assertEquals(viewRootImpl.getPreferredFrameRate(), 0, 0.1);
+        assertEquals(viewRootImpl.getFrameRateCompatibility(),
+                FRAME_RATE_COMPATIBILITY_FIXED_SOURCE);
+        assertEquals(viewRootImpl.isFrameRateConflicted(), false);
     }
 
     /**