1 /*
2  * Copyright (C) 2022 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 android.platform.helpers.media;
18 
19 import android.media.MediaMetadata;
20 
21 import androidx.annotation.Nullable;
22 
23 import java.time.Duration;
24 import java.util.Timer;
25 import java.util.TimerTask;
26 
27 final class MockMediaPlayer {
28 
29     private final static int PERIOD = 1000; // milliseconds
30 
31     private long mCurrentPosition; // current position in milliseconds.
32     private Timer mTimer;
33     @Nullable
34     private MediaMetadata mCurrentSource;
35     private Runnable mOnCompletionListener;
36 
MockMediaPlayer()37     public MockMediaPlayer() {
38         mCurrentPosition = 0;
39     }
40 
start()41     public void start() {
42         mTimer = new Timer();
43         mTimer.scheduleAtFixedRate(new TimerTask() {
44             @Override
45             public void run() {
46                 mCurrentPosition += PERIOD;
47                 if (mCurrentPosition >= getDuration()) {
48                     onCompletion();
49                 }
50             }
51         }, 0, PERIOD);
52     }
53 
onCompletion()54     private void onCompletion() {
55         reset();
56         if (mOnCompletionListener != null) {
57             mOnCompletionListener.run();
58         }
59     }
60 
setOnCompletionListener(@ullable Runnable listener)61     public void setOnCompletionListener(@Nullable Runnable listener) {
62         mOnCompletionListener = listener;
63     }
64 
reset()65     public void reset() {
66         pause();
67         mCurrentPosition = 0;
68     }
69 
pause()70     public void pause() {
71         if (mTimer != null) {
72             mTimer.cancel();
73         }
74         mTimer = null;
75     }
76 
stop()77     public void stop() {
78         reset();
79     }
80 
getCurrentPosition()81     public long getCurrentPosition() {
82         return mCurrentPosition;
83     }
84 
setDataSource(MediaMetadata source)85     public void setDataSource(MediaMetadata source) {
86         mCurrentSource = source;
87     }
88 
getDuration()89     private long getDuration() {
90         return mCurrentSource.getLong(MediaMetadata.METADATA_KEY_DURATION);
91     }
92 }
93