查看Android MediaCodec trace的源代码 Android MediaCodec trace 0

* MediaPlayer calling flow
 MediaPlayer mp = new MediaPlayer();
 1.        mp.setDataSource(filePath);
 2.        mp.setDisplay(MediaFrameworkTest.mSurfaceView.getHolder());
 3.        mp.prepare(); //获取和解码媒体数据
 4.        mp.start();
 5.        FillBuffer
 6.        EmptyBuffer

1.  setDataSource(filePath);
    <MediaPlayerBase> mPlayer = Create form (playerType of source);
	//      => new NuPlayerDriver(pid) {
				mLooper->setName("NuPlayerDriver Looper")->start(PRIORITY_AUDIO);
				mPlayer = new NuPlayer(pid);
			}
	//绑定Extractor、omx、codec2服务的death监听，
	//mPlayer->setDataSource(dataSource)
	
2. setDisplay(SurfaceHolder sh){
		   mSurfaceHolder = sh;
		   _setVideoSurface(sh.getSurface());-->
		   {
		   MediaPlayer.cpp {
		    sp<IGraphicBufferProducer> new_st =  surface->getIGraphicBufferProducer();
			MediaPlayerService mp->setVideoSurfaceTexture(new_st);
			
		   }
real worker: MediaPlayerService
MediaPlayerService::Client::setVideoSurfaceTexture(
        const sp<IGraphicBufferProducer>& bufferProducer)
		
		sp<ANativeWindow> anw;
    if (bufferProducer != NULL) {
        anw = new Surface(bufferProducer, true /* controlledByApp */);
        status_t err = native_window_api_connect(anw.get(),
                NATIVE_WINDOW_API_MEDIA);

p->setVideoSurfaceTexture(bufferProducer);
mConnectedWindow = anw; //decoder dequeue from buffer.Producer