exoplayer实测播放dash流(二) dash+drm widevine加密流

一、前提

   exoplayer基本的集成和用法参考上一篇：exoplayer的集成和使用一

   国内对于播放流的版权还不是很重视，基本大多都是免费的。用到的dash加密情况不多，由于我这边服务的海外客户，所以研究了下。默认你有以下操作：

  1.基本了解mediaplayer的使用、播放，以及对应的生命周期

  2.能够自己集成exoplayer库。

  3.服务端有认证地址，自己有所需要测试的dash加密流。

二、相关API的调用

 2.1 客户端license获取流程：

 代码如下：由于exoplayer源码过于臃肿，所以自己删减了下：

  Application:

public class MyApplication extends Application {
    protected String userAgent;

    @Override
    public void onCreate() {
        super.onCreate();
        userAgent = Util.getUserAgent(this, "ExoPlayer2018");
    }

    public DataSource.Factory buildDataSourceFactory(TransferListener<? super DataSource> listener)
    {
        return new DefaultDataSourceFactory(this, listener, buildHttpDataSourceFactory(listener));
    }

    public HttpDataSource.Factory buildHttpDataSourceFactory(TransferListener<? super DataSource> listener)
    {
        return new DefaultHttpDataSourceFactory(this.userAgent, listener);
    }

}

 Activty:

 

public class PlayerActivity extends Activity {

    private String TAG="exo2018";
    private DefaultBandwidthMeter BANDWIDTH_METER  = new DefaultBandwidthMeter();;
    private DefaultDataSourceFactory defaultDataSourceFactory;
    private Handler mHandler;
    private PlayerView pv_view;
    private DefaultTrackSelector trackSelector;
    //认证地址
    private String license_url="https://hk.cnv8.tv:9900/drm/index.php";
    private SimpleExoPlayer mPlayer;
    //无加密播放地址
    private String url="https://hk.cnv8.tv:9900/dash/live/index.mpd";
    private String url2="http://183.59.160.61:30001/PLTV/88888905/224/3221227518/index.m3u8";
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_play);
        Log.i(TAG,"oncreate");
        initView();
        Intent intent = getIntent();

        defaultDataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "PlayerDash_widevine"), (TransferListener) this.BANDWIDTH_METER);
        mHandler = new Handler();

    }

    private void initView() {
        Log.i(TAG,"initview");
        pv_view = findViewById(R.id.pv_view2);
    }


    @Override
    protected void onStart() {
        super.onStart();
        Log.i(TAG,"onstart");
        initPlayer();
    }

    /**
     * 初始化player
     */
    private void initPlayer() {
        TrackSelection.Factory trackSelectionFactory=new AdaptiveTrackSelection.Factory(BANDWIDTH_METER);
        trackSelector = new DefaultTrackSelector(trackSelectionFactory);

        if (!"".equals(license_url))
            try
            {
                DrmSessionManager localDrmSessionManager = buildDrmSessionManagerV18(C.WIDEVINE_UUID,license_url, null, false);
            }
            catch (UnsupportedDrmException localUnsupportedDrmException)
            {
                localUnsupportedDrmException.printStackTrace();
            }

        //工厂模式下新建一个player
        mPlayer = ExoPlayerFactory.newSimpleInstance(this,trackSelector);
        //view绑定player
        pv_view.setPlayer(mPlayer);
        //自动播放
        mPlayer.setPlayWhenReady(true);

        DefaultDashChunkSource.Factory localFactory = new DefaultDashChunkSource.Factory(defaultDataSourceFactory);
        //使用对应的库播放对应的流
        DashMediaSource dashMediaSource = new DashMediaSource(Uri.parse(url), defaultDataSourceFactory, localFactory, null, null);

        //进入prepare状态
        mPlayer.prepare(dashMediaSource);
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.i(TAG,"onresume");
    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.i(TAG,"onpause");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i(TAG,"ondestory");

        releasePlayer();
    }

    /**
     * 释放资源
     */
    private void releasePlayer() {

        if(mPlayer!=null){
            mPlayer.release();
            mPlayer=null;
            trackSelector=null;
        }
    }

    private DrmSessionManager<FrameworkMediaCrypto> buildDrmSessionManagerV18(UUID paramUUID, String paramString, String[] paramArrayOfString, boolean paramBoolean)
            throws UnsupportedDrmException
    {
        HttpMediaDrmCallback localHttpMediaDrmCallback = new HttpMediaDrmCallback(paramString, buildHttpDataSourceFactory(false));
        int i = 0;
        if (paramArrayOfString != null)
            while (i < -1 + paramArrayOfString.length)
            {
                localHttpMediaDrmCallback.setKeyRequestProperty(paramArrayOfString[i], paramArrayOfString[(i + 1)]);
                i += 2;
            }
        DefaultDrmSessionManager localDefaultDrmSessionManager = new DefaultDrmSessionManager(paramUUID, FrameworkMediaDrm.newInstance(paramUUID), localHttpMediaDrmCallback, null,mHandler, new DefaultDrmSessionManager.EventListener()
        {
            public void onDrmKeysLoaded()
            {
            }
            public void onDrmKeysRemoved()
            {
            }
            public void onDrmKeysRestored()
            {
            }
            public void onDrmSessionManagerError(Exception paramException)
            {
            }
        });
        return localDefaultDrmSessionManager;
    }
    private HttpDataSource.Factory buildHttpDataSourceFactory(boolean paramBoolean)
    {
        MyApplication localDemoApplication = (MyApplication)getApplication();
        DefaultBandwidthMeter localDefaultBandwidthMeter;
        if (paramBoolean)
            localDefaultBandwidthMeter = BANDWIDTH_METER;
        else
            localDefaultBandwidthMeter = null;
        return localDemoApplication.buildHttpDataSourceFactory(localDefaultBandwidthMeter);
    }
}

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