Java 类com.google.android.exoplayer2.extractor.mp4.Track 实例源码

/**
 * @param manifestLoaderErrorThrower Throws errors affecting loading of manifests.
 * @param manifest The initial manifest.
 * @param elementIndex The index of the stream element in the manifest.
 * @param trackSelection The track selection.
 * @param dataSource A {@link DataSource} suitable for loading the media data.
 * @param trackEncryptionBoxes Track encryption boxes for the stream.
 */
public DefaultSsChunkSource(LoaderErrorThrower manifestLoaderErrorThrower, SsManifest manifest,
    int elementIndex, TrackSelection trackSelection, DataSource dataSource,
    TrackEncryptionBox[] trackEncryptionBoxes) {
  this.manifestLoaderErrorThrower = manifestLoaderErrorThrower;
  this.manifest = manifest;
  this.elementIndex = elementIndex;
  this.trackSelection = trackSelection;
  this.dataSource = dataSource;

  StreamElement streamElement = manifest.streamElements[elementIndex];

  extractorWrappers = new ChunkExtractorWrapper[trackSelection.length()];
  for (int i = 0; i < extractorWrappers.length; i++) {
    int manifestTrackIndex = trackSelection.getIndexInTrackGroup(i);
    Format format = streamElement.formats[manifestTrackIndex];
    int nalUnitLengthFieldLength = streamElement.type == C.TRACK_TYPE_VIDEO ? 4 : 0;
    Track track = new Track(manifestTrackIndex, streamElement.type, streamElement.timescale,
        C.TIME_UNSET, manifest.durationUs, format, Track.TRANSFORMATION_NONE,
        trackEncryptionBoxes, nalUnitLengthFieldLength, null, null);
    FragmentedMp4Extractor extractor = new FragmentedMp4Extractor(
        FragmentedMp4Extractor.FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME
        | FragmentedMp4Extractor.FLAG_WORKAROUND_IGNORE_TFDT_BOX, null, track);
    extractorWrappers[i] = new ChunkExtractorWrapper(extractor, format);
  }
}

/**
 * @param manifestLoaderErrorThrower Throws errors affecting loading of manifests.
 * @param manifest The initial manifest.
 * @param elementIndex The index of the stream element in the manifest.
 * @param trackSelection The track selection.
 * @param dataSource A {@link DataSource} suitable for loading the media data.
 * @param trackEncryptionBoxes Track encryption boxes for the stream.
 */
public DefaultSsChunkSource(LoaderErrorThrower manifestLoaderErrorThrower, SsManifest manifest,
    int elementIndex, TrackSelection trackSelection, DataSource dataSource,
    TrackEncryptionBox[] trackEncryptionBoxes) {
  this.manifestLoaderErrorThrower = manifestLoaderErrorThrower;
  this.manifest = manifest;
  this.elementIndex = elementIndex;
  this.trackSelection = trackSelection;
  this.dataSource = dataSource;

  StreamElement streamElement = manifest.streamElements[elementIndex];

  extractorWrappers = new ChunkExtractorWrapper[trackSelection.length()];
  for (int i = 0; i < extractorWrappers.length; i++) {
    int manifestTrackIndex = trackSelection.getIndexInTrackGroup(i);
    Format format = streamElement.formats[manifestTrackIndex];
    int nalUnitLengthFieldLength = streamElement.type == C.TRACK_TYPE_VIDEO ? 4 : 0;
    Track track = new Track(manifestTrackIndex, streamElement.type, streamElement.timescale,
        C.TIME_UNSET, manifest.durationUs, format, Track.TRANSFORMATION_NONE,
        trackEncryptionBoxes, nalUnitLengthFieldLength, null, null);
    FragmentedMp4Extractor extractor = new FragmentedMp4Extractor(
        FragmentedMp4Extractor.FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME
        | FragmentedMp4Extractor.FLAG_WORKAROUND_IGNORE_TFDT_BOX, track, null);
    extractorWrappers[i] = new ChunkExtractorWrapper(extractor, format, false, false);
  }
}

/**
 * @param manifestLoaderErrorThrower Throws errors affecting loading of manifests.
 * @param manifest The initial manifest.
 * @param elementIndex The index of the stream element in the manifest.
 * @param trackSelection The track selection.
 * @param dataSource A {@link DataSource} suitable for loading the media data.
 * @param trackEncryptionBoxes Track encryption boxes for the stream.
 */
public DefaultSsChunkSource(LoaderErrorThrower manifestLoaderErrorThrower, SsManifest manifest,
    int elementIndex, TrackSelection trackSelection, DataSource dataSource,
    TrackEncryptionBox[] trackEncryptionBoxes) {
  this.manifestLoaderErrorThrower = manifestLoaderErrorThrower;
  this.manifest = manifest;
  this.elementIndex = elementIndex;
  this.trackSelection = trackSelection;
  this.dataSource = dataSource;

  StreamElement streamElement = manifest.streamElements[elementIndex];

  extractorWrappers = new ChunkExtractorWrapper[trackSelection.length()];
  for (int i = 0; i < extractorWrappers.length; i++) {
    int manifestTrackIndex = trackSelection.getIndexInTrackGroup(i);
    Format format = streamElement.formats[manifestTrackIndex];
    int nalUnitLengthFieldLength = streamElement.type == C.TRACK_TYPE_VIDEO ? 4 : 0;
    Track track = new Track(manifestTrackIndex, streamElement.type, streamElement.timescale,
        C.TIME_UNSET, manifest.durationUs, format, Track.TRANSFORMATION_NONE,
        trackEncryptionBoxes, nalUnitLengthFieldLength, null, null);
    FragmentedMp4Extractor extractor = new FragmentedMp4Extractor(
        FragmentedMp4Extractor.FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME
        | FragmentedMp4Extractor.FLAG_WORKAROUND_IGNORE_TFDT_BOX, null, track, null);
    extractorWrappers[i] = new ChunkExtractorWrapper(extractor, streamElement.type, format);
  }
}