1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.internal.graphics;
18 
19 import android.animation.AnimationHandler.AnimationFrameCallbackProvider;
20 import android.view.Choreographer;
21 
22 /**
23  * Provider of timing pulse that uses SurfaceFlinger Vsync Choreographer for frame callbacks.
24  *
25  * @hide
26  */
27 public final class SfVsyncFrameCallbackProvider implements AnimationFrameCallbackProvider {
28 
29     private final Choreographer mChoreographer;
30 
SfVsyncFrameCallbackProvider()31     public SfVsyncFrameCallbackProvider() {
32         mChoreographer = Choreographer.getSfInstance();
33     }
34 
SfVsyncFrameCallbackProvider(Choreographer choreographer)35     public SfVsyncFrameCallbackProvider(Choreographer choreographer) {
36         mChoreographer = choreographer;
37     }
38 
39     @Override
postFrameCallback(Choreographer.FrameCallback callback)40     public void postFrameCallback(Choreographer.FrameCallback callback) {
41         mChoreographer.postFrameCallback(callback);
42     }
43 
44     @Override
postCommitCallback(Runnable runnable)45     public void postCommitCallback(Runnable runnable) {
46         mChoreographer.postCallback(Choreographer.CALLBACK_COMMIT, runnable, null);
47     }
48 
49     @Override
getFrameTime()50     public long getFrameTime() {
51         return mChoreographer.getFrameTime();
52     }
53 
54     @Override
getFrameDelay()55     public long getFrameDelay() {
56         return Choreographer.getFrameDelay();
57     }
58 
59     @Override
setFrameDelay(long delay)60     public void setFrameDelay(long delay) {
61         Choreographer.setFrameDelay(delay);
62     }
63 }