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1 // Copyright 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 package org.chromium.media;
6 
7 import android.content.Context;
8 import android.media.AudioManager;
9 import android.media.MediaPlayer;
10 
11 import org.chromium.base.CalledByNative;
12 import org.chromium.base.JNINamespace;
13 
14 // This class implements all the listener interface for android mediaplayer.
15 // Callbacks will be sent to the native class for processing.
16 @JNINamespace("media")
17 class MediaPlayerListener implements MediaPlayer.OnPreparedListener,
18     MediaPlayer.OnCompletionListener,
19     MediaPlayer.OnBufferingUpdateListener,
20     MediaPlayer.OnSeekCompleteListener,
21     MediaPlayer.OnVideoSizeChangedListener,
22     MediaPlayer.OnErrorListener,
23     AudioManager.OnAudioFocusChangeListener {
24     // These values are mirrored as enums in media/base/android/media_player_bridge.h.
25     // Please ensure they stay in sync.
26     private static final int MEDIA_ERROR_FORMAT = 0;
27     private static final int MEDIA_ERROR_DECODE = 1;
28     private static final int MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK = 2;
29     private static final int MEDIA_ERROR_INVALID_CODE = 3;
30 
31     // These values are copied from android media player.
32     public static final int MEDIA_ERROR_MALFORMED = -1007;
33     public static final int MEDIA_ERROR_TIMED_OUT = -110;
34 
35     // Used to determine the class instance to dispatch the native call to.
36     private long mNativeMediaPlayerListener = 0;
37     private final Context mContext;
38 
MediaPlayerListener(long nativeMediaPlayerListener, Context context)39     private MediaPlayerListener(long nativeMediaPlayerListener, Context context) {
40         mNativeMediaPlayerListener = nativeMediaPlayerListener;
41         mContext = context;
42     }
43 
44     @Override
onError(MediaPlayer mp, int what, int extra)45     public boolean onError(MediaPlayer mp, int what, int extra) {
46         int errorType;
47         switch (what) {
48             case MediaPlayer.MEDIA_ERROR_UNKNOWN:
49                 switch (extra) {
50                     case MEDIA_ERROR_MALFORMED:
51                         errorType = MEDIA_ERROR_DECODE;
52                         break;
53                     case MEDIA_ERROR_TIMED_OUT:
54                         errorType = MEDIA_ERROR_INVALID_CODE;
55                         break;
56                     default:
57                         errorType = MEDIA_ERROR_FORMAT;
58                         break;
59                 }
60                 break;
61             case MediaPlayer.MEDIA_ERROR_SERVER_DIED:
62                 errorType = MEDIA_ERROR_DECODE;
63                 break;
64             case MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK:
65                 errorType = MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK;
66                 break;
67             default:
68                 // There are some undocumented error codes for android media player.
69                 // For example, when surfaceTexture got deleted before we setVideoSuface
70                 // to NULL, mediaplayer will report error -38. These errors should be ignored
71                 // and not be treated as an error to webkit.
72                 errorType = MEDIA_ERROR_INVALID_CODE;
73                 break;
74         }
75         nativeOnMediaError(mNativeMediaPlayerListener, errorType);
76         return true;
77     }
78 
79     @Override
onVideoSizeChanged(MediaPlayer mp, int width, int height)80     public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
81         nativeOnVideoSizeChanged(mNativeMediaPlayerListener, width, height);
82     }
83 
84     @Override
onSeekComplete(MediaPlayer mp)85     public void onSeekComplete(MediaPlayer mp) {
86         nativeOnSeekComplete(mNativeMediaPlayerListener);
87     }
88 
89     @Override
onBufferingUpdate(MediaPlayer mp, int percent)90     public void onBufferingUpdate(MediaPlayer mp, int percent) {
91         nativeOnBufferingUpdate(mNativeMediaPlayerListener, percent);
92     }
93 
94     @Override
onCompletion(MediaPlayer mp)95     public void onCompletion(MediaPlayer mp) {
96         nativeOnPlaybackComplete(mNativeMediaPlayerListener);
97     }
98 
99     @Override
onPrepared(MediaPlayer mp)100     public void onPrepared(MediaPlayer mp) {
101         nativeOnMediaPrepared(mNativeMediaPlayerListener);
102     }
103 
104     @Override
onAudioFocusChange(int focusChange)105     public void onAudioFocusChange(int focusChange) {
106         if (focusChange == AudioManager.AUDIOFOCUS_LOSS ||
107                 focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) {
108             nativeOnMediaInterrupted(mNativeMediaPlayerListener);
109         }
110     }
111 
112     @CalledByNative
releaseResources()113     public void releaseResources() {
114         if (mContext != null) {
115             // Unregister the wish for audio focus.
116             AudioManager am = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
117             if (am != null) {
118                 am.abandonAudioFocus(this);
119             }
120         }
121     }
122 
123     @CalledByNative
create(int nativeMediaPlayerListener, Context context, MediaPlayerBridge mediaPlayerBridge)124     private static MediaPlayerListener create(int nativeMediaPlayerListener,
125             Context context, MediaPlayerBridge mediaPlayerBridge) {
126         final MediaPlayerListener listener =
127                 new MediaPlayerListener(nativeMediaPlayerListener, context);
128         mediaPlayerBridge.setOnBufferingUpdateListener(listener);
129         mediaPlayerBridge.setOnCompletionListener(listener);
130         mediaPlayerBridge.setOnErrorListener(listener);
131         mediaPlayerBridge.setOnPreparedListener(listener);
132         mediaPlayerBridge.setOnSeekCompleteListener(listener);
133         mediaPlayerBridge.setOnVideoSizeChangedListener(listener);
134 
135         AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
136         am.requestAudioFocus(
137                 listener,
138                 AudioManager.STREAM_MUSIC,
139 
140                 // Request permanent focus.
141                 AudioManager.AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK);
142         return listener;
143     }
144 
145     /**
146      * See media/base/android/media_player_listener.cc for all the following functions.
147      */
nativeOnMediaError( long nativeMediaPlayerListener, int errorType)148     private native void nativeOnMediaError(
149             long nativeMediaPlayerListener,
150             int errorType);
151 
nativeOnVideoSizeChanged( long nativeMediaPlayerListener, int width, int height)152     private native void nativeOnVideoSizeChanged(
153             long nativeMediaPlayerListener,
154             int width, int height);
155 
nativeOnBufferingUpdate( long nativeMediaPlayerListener, int percent)156     private native void nativeOnBufferingUpdate(
157             long nativeMediaPlayerListener,
158             int percent);
159 
nativeOnMediaPrepared(long nativeMediaPlayerListener)160     private native void nativeOnMediaPrepared(long nativeMediaPlayerListener);
161 
nativeOnPlaybackComplete(long nativeMediaPlayerListener)162     private native void nativeOnPlaybackComplete(long nativeMediaPlayerListener);
163 
nativeOnSeekComplete(long nativeMediaPlayerListener)164     private native void nativeOnSeekComplete(long nativeMediaPlayerListener);
165 
nativeOnMediaInterrupted(long nativeMediaPlayerListener)166     private native void nativeOnMediaInterrupted(long nativeMediaPlayerListener);
167 }
168