[VRR] Use UXR values for velocity/frame rate calculation

Fixes: 343772301

In our UXR study, we found that for velocities greater than
1500dp/s, we need to use 120fps to get a premium experience.
Below that, 80fps is required for a premium experience.

Test: modified existing tests
Change-Id: I010d5a7113fe1651a04b9f3dad14ce77d87daf19

2 files changed, 9 insertions, 5 deletions

diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 1cb276568244..344edfa30af2 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -34061,10 +34061,14 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
     }
 
     private float convertVelocityToFrameRate(float velocityPps) {
+        // From UXR study, premium experience is:
+        // 1500+    dp/s: 120fps
+        // 0 - 1500 dp/s:  80fps
+        // OEMs are likely to modify this to balance battery and user experience for their
+        // specific device.
         float density = mAttachInfo.mDensity;
         float velocityDps = velocityPps / density;
-        // Choose a frame rate in increments of 10fps
-        return Math.min(MAX_FRAME_RATE, 60f + (10f * (float) Math.floor(velocityDps / 300f)));
+        return (velocityDps >= 1500f) ? MAX_FRAME_RATE : 80f;
     }
 
     /**
diff --git a/core/tests/coretests/src/android/view/ViewFrameRateTest.java b/core/tests/coretests/src/android/view/ViewFrameRateTest.java
index 07446e7617aa..abe9c8e337bb 100644
--- a/core/tests/coretests/src/android/view/ViewFrameRateTest.java
+++ b/core/tests/coretests/src/android/view/ViewFrameRateTest.java
@@ -164,7 +164,7 @@ public class ViewFrameRateTest {
         mActivityRule.runOnUiThread(() -> {
             mMovingView.setFrameContentVelocity(1f);
             mMovingView.invalidate();
-            runAfterDraw(() -> assertEquals(60f, mViewRoot.getLastPreferredFrameRate(), 0f));
+            runAfterDraw(() -> assertEquals(80f, mViewRoot.getLastPreferredFrameRate(), 0f));
         });
         waitForAfterDraw();
     }
@@ -190,7 +190,7 @@ public class ViewFrameRateTest {
             frameLayout.setFrameContentVelocity(1f);
             mMovingView.offsetTopAndBottom(100);
             frameLayout.invalidate();
-            runAfterDraw(() -> assertEquals(60f, mViewRoot.getLastPreferredFrameRate(), 0f));
+            runAfterDraw(() -> assertEquals(80f, mViewRoot.getLastPreferredFrameRate(), 0f));
         });
         waitForAfterDraw();
     }
@@ -435,7 +435,7 @@ public class ViewFrameRateTest {
             runAfterDraw(() -> {
                 assertEquals(FRAME_RATE_CATEGORY_LOW,
                         mViewRoot.getLastPreferredFrameRateCategory());
-                assertEquals(60f, mViewRoot.getLastPreferredFrameRate());
+                assertEquals(80f, mViewRoot.getLastPreferredFrameRate());
             });
         });
         waitForAfterDraw();