class DefaultMediaClock implements MediaClock {

  @Override
  public PlaybackParameters setPlaybackParameters(PlaybackParameters playbackParameters) {
    if (rendererClock != null) {
      playbackParameters = rendererClock.setPlaybackParameters(playbackParameters);
    }
    standaloneMediaClock.setPlaybackParameters(playbackParameters);
    listener.onPlaybackParametersChanged(playbackParameters);
    return playbackParameters;
  }

  public  DefaultMediaClock(PlaybackParameterListener listener, Clock clock);

}