public Callback() {
if (android.os.Build.VERSION.SDK_INT >= 21) {
mCallbackObj = MediaControllerCompatApi21.createCallback(new StubApi21());
} else {
mCallbackObj = null;
}
}
@Override
public PlaybackInfo getPlaybackInfo() {
Object volumeInfoObj = MediaControllerCompatApi21.getPlaybackInfo(mControllerObj);
return volumeInfoObj != null
? new PlaybackInfo(
MediaControllerCompatApi21.PlaybackInfo.getPlaybackType(volumeInfoObj),
MediaControllerCompatApi21.PlaybackInfo.getLegacyAudioStream(volumeInfoObj),
MediaControllerCompatApi21.PlaybackInfo.getVolumeControl(volumeInfoObj),
MediaControllerCompatApi21.PlaybackInfo.getMaxVolume(volumeInfoObj),
MediaControllerCompatApi21.PlaybackInfo.getCurrentVolume(volumeInfoObj))
: null;
}
@Override
public void sendCommand(String command, Bundle params, ResultReceiver cb) {
MediaControllerCompatApi21.sendCommand(mControllerObj, command, params, cb);
}
@Override
public int getRatingType() {
return MediaControllerCompatApi21.getRatingType(mControllerObj);
}
@Override
public MediaMetadataCompat getMetadata() {
Object metadataObj = MediaControllerCompatApi21.getMetadata(mControllerObj);
return metadataObj != null ? MediaMetadataCompat.fromMediaMetadata(metadataObj) : null;
}
@Override
public PlaybackStateCompat getPlaybackState() {
Object stateObj = MediaControllerCompatApi21.getPlaybackState(mControllerObj);
return stateObj != null ? PlaybackStateCompat.fromPlaybackState(stateObj) : null;
}
@Override
public TransportControls getTransportControls() {
Object controlsObj = MediaControllerCompatApi21.getTransportControls(mControllerObj);
return controlsObj != null ? new TransportControlsApi21(controlsObj) : null;
}
@Override
public boolean dispatchMediaButtonEvent(KeyEvent event) {
return MediaControllerCompatApi21.dispatchMediaButtonEvent(mControllerObj, event);
}
@Override
public void unregisterCallback(Callback callback) {
MediaControllerCompatApi21.unregisterCallback(mControllerObj, callback.mCallbackObj);
}
@Override
public void registerCallback(Callback callback, Handler handler) {
MediaControllerCompatApi21.registerCallback(mControllerObj, callback.mCallbackObj, handler);
}
public MediaControllerImplApi21(Context context, MediaSessionCompat.Token sessionToken)
throws RemoteException {
// TODO: refactor framework implementation
mControllerObj = MediaControllerCompatApi21.fromToken(context, sessionToken.getToken());
if (mControllerObj == null) throw new RemoteException();
}
public MediaControllerImplApi21(Context context, MediaSessionCompat session) {
mControllerObj =
MediaControllerCompatApi21.fromToken(context, session.getSessionToken().getToken());
}