问设置mp4视频流的标题并使用Exoplayer播放文件

EN

DefaultHttpDataSource source = new DefaultHttpDataSource(userAgent, null);
    source.setRequestProperty("Authorization", "your auth code");
    source.setRequestProperty("Accept", "...");

    ExtractorSampleSource sampleSource = new ExtractorSampleSource(uri, source, extractor, 2,
            BUFFER_SIZE);
    MediaCodecVideoTrackRenderer videoRenderer = new MediaCodecVideoTrackRenderer(sampleSource,
            null, true, MediaCodec.VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING, 5000, null, player.getMainHandler(),
            player, 50);
    MediaCodecAudioTrackRenderer audioRenderer = new MediaCodecAudioTrackRenderer(sampleSource,
            null, true, player.getMainHandler(), player);

   // (1) Create method returns  'DataSource.Factory'

     public DataSource.Factory headers() {
            Map<String, String> headersMap = new HashMap<>();
            headersMap.put("iid", "aaa123 ");
            headersMap.put("version", "1.4");
            headersMap.put("agent", "phone");
            headersMap.put("token", "dfdf4f4yt5yf5fh4f5");
            return new DefaultHttpDataSource.Factory().setDefaultRequestProperties(headersMap);
        }
    
    
    
    // (2) Add headers() method call to the player

           SimpleExoPlayer player = new SimpleExoPlayer.Builder(context)
                    .setMediaSourceFactory(new 
                     DefaultMediaSourceFactory(headers()))
                    .build();

  // 1. Create a default TrackSelector
    BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
    TrackSelection.Factory videoTrackSelectionFactory = new 
  AdaptiveTrackSelection.Factory(bandwidthMeter);
    TrackSelector trackSelector = new 
  DefaultTrackSelector(videoTrackSelectionFactory);

  // 2. Create a default LoadControl
    LoadControl loadControl = new DefaultLoadControl();

 // 3. Create the player
    player = ExoPlayerFactory.newSimpleInstance(this, trackSelector,  
   loadControl);
    simpleExoPlayerView = new SimpleExoPlayerView(this);
    simpleExoPlayerView = (SimpleExoPlayerView)
  findViewById(R.id.player_view);

  //Set media controller
    simpleExoPlayerView.setUseController(true);
    simpleExoPlayerView.requestFocus();

   // Bind the player to the view.
    simpleExoPlayerView.setPlayer(player); 

   String username = "username";
    String password = "password";

    // encrypt Authdata
    byte[] toEncrypt = (username + ":" + password).getBytes();
    encoded = Base64.encodeToString(toEncrypt, Base64.DEFAULT);
    DefaultHttpDataSourceFactory dataSourceFactory = new 
    DefaultHttpDataSourceFactory(Util.getUserAgent(this,   
    "exoplayer2example"));

    DefaultHttpDataSource source = new  DefaultHttpDataSource(Util.getUserAgent(this, "exoplayer2example"),null);
    dataSourceFactory.setDefaultRequestProperty("Authorization","Basic "+encoded);
    ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
    MediaSource videoSource = new ExtractorMediaSource(Uri.parse("https://example.com/assets/video/SampleVideo.mp4"),
            dataSourceFactory, extractorsFactory, null, null);
    final LoopingMediaSource loopingSource = new LoopingMediaSource(videoSource);
    exoplayer.prepare(videoSource);