From 771526c88f5cc4b56a41cb12aa06a28d377a07d5 Mon Sep 17 00:00:00 2001
From: Jeff Brown <jeffbrown@google.com>
Date: Fri, 27 Apr 2012 15:13:25 -0700
Subject: Resample touch events on frame boundaries.

Bug: 6375101
Change-Id: I8774e366306bb2b6b4e42b913525bf25b0380ec3
---
 core/java/android/view/InputEventReceiver.java | 12 ++++++++----
 core/java/android/view/ViewRootImpl.java       |  6 +++---
 2 files changed, 11 insertions(+), 7 deletions(-)

(limited to 'core/java')

diff --git a/core/java/android/view/InputEventReceiver.java b/core/java/android/view/InputEventReceiver.java
index 6a457ec..9c56782 100644
--- a/core/java/android/view/InputEventReceiver.java
+++ b/core/java/android/view/InputEventReceiver.java
@@ -46,7 +46,8 @@ public abstract class InputEventReceiver {
             InputChannel inputChannel, MessageQueue messageQueue);
     private static native void nativeDispose(int receiverPtr);
     private static native void nativeFinishInputEvent(int receiverPtr, int seq, boolean handled);
-    private static native void nativeConsumeBatchedInputEvents(int receiverPtr);
+    private static native void nativeConsumeBatchedInputEvents(int receiverPtr,
+            long frameTimeNanos);
 
     /**
      * Creates an input event receiver bound to the specified input channel.
@@ -114,7 +115,7 @@ public abstract class InputEventReceiver {
      * immediately (such as a pointer up event).
      */
     public void onBatchedInputEventPending() {
-        consumeBatchedInputEvents();
+        consumeBatchedInputEvents(-1);
     }
 
     /**
@@ -150,13 +151,16 @@ public abstract class InputEventReceiver {
      *
      * This method forces all batched input events to be delivered immediately.
      * Should be called just before animating or drawing a new frame in the UI.
+     *
+     * @param frameTimeNanos The time in the {@link System#nanoTime()} time base
+     * when the current display frame started rendering, or -1 if unknown.
      */
-    public final void consumeBatchedInputEvents() {
+    public final void consumeBatchedInputEvents(long frameTimeNanos) {
         if (mReceiverPtr == 0) {
             Log.w(TAG, "Attempted to consume batched input events but the input event "
                     + "receiver has already been disposed.");
         } else {
-            nativeConsumeBatchedInputEvents(mReceiverPtr);
+            nativeConsumeBatchedInputEvents(mReceiverPtr, frameTimeNanos);
         }
     }
 
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index afa9b12..1ee7934 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -4204,11 +4204,11 @@ public final class ViewRootImpl implements ViewParent,
         }
     }
 
-    void doConsumeBatchedInput() {
+    void doConsumeBatchedInput(long frameTimeNanos) {
         if (mConsumeBatchedInputScheduled) {
             mConsumeBatchedInputScheduled = false;
             if (mInputEventReceiver != null) {
-                mInputEventReceiver.consumeBatchedInputEvents();
+                mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos);
             }
             doProcessInputEvents();
         }
@@ -4248,7 +4248,7 @@ public final class ViewRootImpl implements ViewParent,
     final class ConsumeBatchedInputRunnable implements Runnable {
         @Override
         public void run() {
-            doConsumeBatchedInput();
+            doConsumeBatchedInput(mChoreographer.getFrameTimeNanos());
         }
     }
     final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable =
-- 
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