@Override
public void stop() {
cleanUp();
if (mPlayerEngineListener != null) {
mPlayerEngineListener.onTrackStop();
}
}
public void run() {
if (mPlayerEngineListener != null) {
// TODO use getCurrentPosition less frequently (usage of currentTimeMillis or
// uptimeMillis)
if (mCurrentMediaPlayer != null)
mPlayerEngineListener.onTrackProgress(
mCurrentMediaPlayer.getCurrentPosition() / 1000);
mHandler.postDelayed(this, 1000); // 让mUpdateTimeTask延时一秒
}
}
@Override
public void pause() {
if (mCurrentMediaPlayer != null) {
// still preparing
if (mCurrentMediaPlayer.preparing) {
mCurrentMediaPlayer.playAfterPrepare = false;
return;
}
// check if we play, then pause
if (mCurrentMediaPlayer.isPlaying()) {
mCurrentMediaPlayer.pause();
if (mPlayerEngineListener != null) mPlayerEngineListener.onTrackPause();
return;
}
}
}
private InternalMediaPlayer build(PlaylistEntry playlistEntry) {
final InternalMediaPlayer mediaPlayer = new InternalMediaPlayer();
// try to setup local path
String path = JamendoApplication.getInstance().getDownloadManager().getTrackPath(playlistEntry);
if (path == null)
// fallback to remote one
path = playlistEntry.getTrack().getStream();
// some albums happen to contain empty stream url, notify of error, abort playback
if (path.length() == 0) {
if (mPlayerEngineListener != null) {
mPlayerEngineListener.onTrackStreamError();
mPlayerEngineListener.onTrackChanged(mPlaylist.getSelectedTrack());
}
stop();
return null;
}
try {
mediaPlayer.setDataSource(path);
mediaPlayer.playlistEntry = playlistEntry;
// mediaPlayer.setScreenOnWhilePlaying(true);
mediaPlayer.setOnCompletionListener(
new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
if (!mPlaylist.isLastTrackOnList()
|| mPlaylist.getPlaylistPlaybackMode() == PlaylistPlaybackMode.REPEAT
|| mPlaylist.getPlaylistPlaybackMode()
== PlaylistPlaybackMode.SHUFFLE_AND_REPEAT) {
next();
} else {
stop();
}
}
});
mediaPlayer.setOnPreparedListener(
new OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaPlayer.preparing = false;
// we may start playing
if (mPlaylist.getSelectedTrack() == mediaPlayer.playlistEntry
&& mediaPlayer.playAfterPrepare) {
mediaPlayer.playAfterPrepare = false;
play();
}
}
});
mediaPlayer.setOnBufferingUpdateListener(
new OnBufferingUpdateListener() {
@Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
if (mPlayerEngineListener != null) {
mPlayerEngineListener.onTrackBuffering(percent);
}
}
});
mediaPlayer.setOnErrorListener(
new OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
Log.w(
JamendoApplication.TAG,
"PlayerEngineImpl fail, what (" + what + ") extra (" + extra + ")");
if (what == MediaPlayer.MEDIA_ERROR_UNKNOWN) {
// we probably lack network
if (mPlayerEngineListener != null) {
mPlayerEngineListener.onTrackStreamError();
}
stop();
return true;
}
// not sure what error code -1 exactly stands for but it causes player to start to
// jump songs
// if there are more than 5 jumps without playback during 1 second then we abort
// further playback
if (what == -1) {
long failTime = System.currentTimeMillis();
if (failTime - mLastFailTime > FAIL_TIME_FRAME) {
// outside time frame
mTimesFailed = 1;
mLastFailTime = failTime;
Log.w(
JamendoApplication.TAG,
"PlayerEngineImpl " + mTimesFailed + " fail within FAIL_TIME_FRAME");
} else {
// inside time frame
mTimesFailed++;
if (mTimesFailed > ACCEPTABLE_FAIL_NUMBER) {
Log.w(
JamendoApplication.TAG,
"PlayerEngineImpl too many fails, aborting playback");
if (mPlayerEngineListener != null) {
mPlayerEngineListener.onTrackStreamError();
}
stop();
return true;
}
}
}
return false;
}
});
// start preparing
Log.i(
JamendoApplication.TAG,
"Player [buffering] " + mediaPlayer.playlistEntry.getTrack().getName());
mediaPlayer.preparing = true;
mediaPlayer.prepareAsync();
// this is a new track, so notify the listener
if (mPlayerEngineListener != null) {
mPlayerEngineListener.onTrackChanged(mPlaylist.getSelectedTrack());
}
return mediaPlayer;
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
public void play() {
if (mPlayerEngineListener.onTrackStart() == false) {
return; // apparently sth prevents us from playing tracks
}
// check if there is anything to play
if (mPlaylist != null) {
// check if media player is initialized
if (mCurrentMediaPlayer == null) {
mCurrentMediaPlayer = build(mPlaylist.getSelectedTrack());
}
// check if current media player is set to our song
if (mCurrentMediaPlayer != null
&& mCurrentMediaPlayer.playlistEntry != mPlaylist.getSelectedTrack()) {
cleanUp(); // this will do the cleanup job
mCurrentMediaPlayer = build(mPlaylist.getSelectedTrack());
}
// check if there is any player instance, if not, abort further execution
if (mCurrentMediaPlayer == null) return;
// check if current media player is not still buffering
if (!mCurrentMediaPlayer.preparing) {
// prevent double-press
if (!mCurrentMediaPlayer.isPlaying()) {
// i guess this mean we can play the song
Log.i(
JamendoApplication.TAG,
"Player [playing] " + mCurrentMediaPlayer.playlistEntry.getTrack().getName());
// starting timer
mHandler.removeCallbacks(mUpdateTimeTask);
mHandler.postDelayed(mUpdateTimeTask, 1000);
// Actual equalizer
Equalizer equalizer = JamendoApplication.getInstance().getMyEqualizer();
// Mantain the settings of the equalizer for the new media
Equalizer newEqualizer = new Equalizer(0, mCurrentMediaPlayer.getAudioSessionId());
if (equalizer != null) {
newEqualizer.setProperties(equalizer.getProperties());
}
// Enable equalizer before media starts
JamendoApplication.getInstance().setMyEqualizer(newEqualizer);
JamendoApplication.getInstance().getMyEqualizer().setEnabled(true);
mCurrentMediaPlayer.start();
}
} else {
// tell the mediaplayer to play the song as soon as it ends preparing
mCurrentMediaPlayer.playAfterPrepare = true;
}
}
// Change application media
JamendoApplication.getInstance().setMyCurrentMedia(mCurrentMediaPlayer);
}