Java 类com.google.android.exoplayer2.source.hls.playlist.HlsPlaylistTracker 实例源码

/**
 * @param playlistTracker The {@link HlsPlaylistTracker} from which to obtain media playlists.
 * @param variants The available variants.
 * @param dataSourceFactory An {@link HlsDataSourceFactory} to create {@link DataSource}s for the
 *     chunks.
 * @param timestampAdjusterProvider A provider of {@link TimestampAdjuster} instances. If
 *     multiple {@link HlsChunkSource}s are used for a single playback, they should all share the
 *     same provider.
 * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption
 *     information is available in the master playlist.
 */
public HlsChunkSource(HlsPlaylistTracker playlistTracker, HlsUrl[] variants,
    HlsDataSourceFactory dataSourceFactory, TimestampAdjusterProvider timestampAdjusterProvider,
    List<Format> muxedCaptionFormats) {
  this.playlistTracker = playlistTracker;
  this.variants = variants;
  this.timestampAdjusterProvider = timestampAdjusterProvider;
  this.muxedCaptionFormats = muxedCaptionFormats;
  Format[] variantFormats = new Format[variants.length];
  int[] initialTrackSelection = new int[variants.length];
  for (int i = 0; i < variants.length; i++) {
    variantFormats[i] = variants[i].format;
    initialTrackSelection[i] = i;
  }
  mediaDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_MEDIA);
  encryptionDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_DRM);
  trackGroup = new TrackGroup(variantFormats);
  trackSelection = new InitializationTrackSelection(trackGroup, initialTrackSelection);
}

/**
 * @param playlistTracker The {@link HlsPlaylistTracker} from which to obtain media playlists.
 * @param variants The available variants.
 * @param dataSourceFactory An {@link HlsDataSourceFactory} to create {@link DataSource}s for the
 *     chunks.
 * @param timestampAdjusterProvider A provider of {@link TimestampAdjuster} instances. If
 *     multiple {@link HlsChunkSource}s are used for a single playback, they should all share the
 *     same provider.
 * @param muxedCaptionFormats List of muxed caption {@link Format}s.
 */
public HlsChunkSource(HlsPlaylistTracker playlistTracker, HlsUrl[] variants,
    HlsDataSourceFactory dataSourceFactory, TimestampAdjusterProvider timestampAdjusterProvider,
    List<Format> muxedCaptionFormats) {
  this.playlistTracker = playlistTracker;
  this.variants = variants;
  this.timestampAdjusterProvider = timestampAdjusterProvider;
  this.muxedCaptionFormats = muxedCaptionFormats;
  Format[] variantFormats = new Format[variants.length];
  int[] initialTrackSelection = new int[variants.length];
  for (int i = 0; i < variants.length; i++) {
    variantFormats[i] = variants[i].format;
    initialTrackSelection[i] = i;
  }
  mediaDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_MEDIA);
  encryptionDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_DRM);
  trackGroup = new TrackGroup(variantFormats);
  trackSelection = new InitializationTrackSelection(trackGroup, initialTrackSelection);
}

/**
 * @param extractorFactory An {@link HlsExtractorFactory} from which to obtain the extractors for
 *     media chunks.
 * @param playlistTracker The {@link HlsPlaylistTracker} from which to obtain media playlists.
 * @param variants The available variants.
 * @param dataSourceFactory An {@link HlsDataSourceFactory} to create {@link DataSource}s for the
 *     chunks.
 * @param timestampAdjusterProvider A provider of {@link TimestampAdjuster} instances. If
 *     multiple {@link HlsChunkSource}s are used for a single playback, they should all share the
 *     same provider.
 * @param muxedCaptionFormats List of muxed caption {@link Format}s. Null if no closed caption
 *     information is available in the master playlist.
 */
public HlsChunkSource(HlsExtractorFactory extractorFactory, HlsPlaylistTracker playlistTracker,
    HlsUrl[] variants, HlsDataSourceFactory dataSourceFactory,
    TimestampAdjusterProvider timestampAdjusterProvider, List<Format> muxedCaptionFormats) {
  this.extractorFactory = extractorFactory;
  this.playlistTracker = playlistTracker;
  this.variants = variants;
  this.timestampAdjusterProvider = timestampAdjusterProvider;
  this.muxedCaptionFormats = muxedCaptionFormats;
  liveEdgeTimeUs = C.TIME_UNSET;
  Format[] variantFormats = new Format[variants.length];
  int[] initialTrackSelection = new int[variants.length];
  for (int i = 0; i < variants.length; i++) {
    variantFormats[i] = variants[i].format;
    initialTrackSelection[i] = i;
  }
  mediaDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_MEDIA);
  encryptionDataSource = dataSourceFactory.createDataSource(C.DATA_TYPE_DRM);
  trackGroup = new TrackGroup(variantFormats);
  trackSelection = new InitializationTrackSelection(trackGroup, initialTrackSelection);
}

public HlsMediaPeriod(HlsPlaylistTracker playlistTracker, HlsDataSourceFactory dataSourceFactory,
    int minLoadableRetryCount, EventDispatcher eventDispatcher, Allocator allocator,
    long positionUs) {
  this.playlistTracker = playlistTracker;
  this.dataSourceFactory = dataSourceFactory;
  this.minLoadableRetryCount = minLoadableRetryCount;
  this.eventDispatcher = eventDispatcher;
  this.allocator = allocator;
  streamWrapperIndices = new IdentityHashMap<>();
  timestampAdjusterProvider = new TimestampAdjusterProvider();
  continueLoadingHandler = new Handler();
  preparePositionUs = positionUs;
}

public HlsMediaPeriod(HlsPlaylistTracker playlistTracker, HlsDataSourceFactory dataSourceFactory,
    int minLoadableRetryCount, EventDispatcher eventDispatcher, Allocator allocator,
    long positionUs) {
  this.playlistTracker = playlistTracker;
  this.dataSourceFactory = dataSourceFactory;
  this.minLoadableRetryCount = minLoadableRetryCount;
  this.eventDispatcher = eventDispatcher;
  this.allocator = allocator;
  streamWrapperIndices = new IdentityHashMap<>();
  timestampAdjusterProvider = new TimestampAdjusterProvider();
  continueLoadingHandler = new Handler();
  preparePositionUs = positionUs;
}

public HlsMediaPeriod(HlsExtractorFactory extractorFactory, HlsPlaylistTracker playlistTracker,
    HlsDataSourceFactory dataSourceFactory, int minLoadableRetryCount,
    EventDispatcher eventDispatcher, Allocator allocator) {
  this.extractorFactory = extractorFactory;
  this.playlistTracker = playlistTracker;
  this.dataSourceFactory = dataSourceFactory;
  this.minLoadableRetryCount = minLoadableRetryCount;
  this.eventDispatcher = eventDispatcher;
  this.allocator = allocator;
  streamWrapperIndices = new IdentityHashMap<>();
  timestampAdjusterProvider = new TimestampAdjusterProvider();
  continueLoadingHandler = new Handler();
  sampleStreamWrappers = new HlsSampleStreamWrapper[0];
  enabledSampleStreamWrappers = new HlsSampleStreamWrapper[0];
}