Java 类com.google.android.exoplayer2.source.chunk.InitializationChunk 实例源码

@Override
public void onChunkLoadCompleted(Chunk chunk) {
  if (chunk instanceof InitializationChunk) {
    InitializationChunk initializationChunk = (InitializationChunk) chunk;
    RepresentationHolder representationHolder =
        representationHolders[trackSelection.indexOf(initializationChunk.trackFormat)];
    // The null check avoids overwriting an index obtained from the manifest with one obtained
    // from the stream. If the manifest defines an index then the stream shouldn't, but in cases
    // where it does we should ignore it.
    if (representationHolder.segmentIndex == null) {
      SeekMap seekMap = representationHolder.extractorWrapper.getSeekMap();
      if (seekMap != null) {
        representationHolder.segmentIndex = new DashWrappingSegmentIndex((ChunkIndex) seekMap);
      }
    }
  }
}

private static Chunk newInitializationChunk(RepresentationHolder representationHolder,
    DataSource dataSource, Format trackFormat, int trackSelectionReason,
    Object trackSelectionData, RangedUri initializationUri, RangedUri indexUri) {
  RangedUri requestUri;
  String baseUrl = representationHolder.representation.baseUrl;
  if (initializationUri != null) {
    // It's common for initialization and index data to be stored adjacently. Attempt to merge
    // the two requests together to request both at once.
    requestUri = initializationUri.attemptMerge(indexUri, baseUrl);
    if (requestUri == null) {
      requestUri = initializationUri;
    }
  } else {
    requestUri = indexUri;
  }
  DataSpec dataSpec = new DataSpec(requestUri.resolveUri(baseUrl), requestUri.start,
      requestUri.length, representationHolder.representation.getCacheKey());
  return new InitializationChunk(dataSource, dataSpec, trackFormat,
      trackSelectionReason, trackSelectionData, representationHolder.extractorWrapper);
}

@Override
public void onChunkLoadCompleted(Chunk chunk) {
  if (chunk instanceof InitializationChunk) {
    InitializationChunk initializationChunk = (InitializationChunk) chunk;
    RepresentationHolder representationHolder =
        representationHolders[trackSelection.indexOf(initializationChunk.trackFormat)];
    Format sampleFormat = initializationChunk.getSampleFormat();
    if (sampleFormat != null) {
      representationHolder.setSampleFormat(sampleFormat);
    }
    // The null check avoids overwriting an index obtained from the manifest with one obtained
    // from the stream. If the manifest defines an index then the stream shouldn't, but in cases
    // where it does we should ignore it.
    if (representationHolder.segmentIndex == null) {
      SeekMap seekMap = initializationChunk.getSeekMap();
      if (seekMap != null) {
        representationHolder.segmentIndex = new DashWrappingSegmentIndex((ChunkIndex) seekMap,
            initializationChunk.dataSpec.uri.toString());
      }
    }
  }
}

private Chunk newInitializationChunk(RepresentationHolder representationHolder,
    DataSource dataSource, Format trackFormat, int trackSelectionReason,
    Object trackSelectionData, RangedUri initializationUri, RangedUri indexUri) {
  RangedUri requestUri;
  if (initializationUri != null) {
    // It's common for initialization and index data to be stored adjacently. Attempt to merge
    // the two requests together to request both at once.
    requestUri = initializationUri.attemptMerge(indexUri);
    if (requestUri == null) {
      requestUri = initializationUri;
    }
  } else {
    requestUri = indexUri;
  }
  DataSpec dataSpec = new DataSpec(requestUri.getUri(), requestUri.start, requestUri.length,
      representationHolder.representation.getCacheKey());
  return new InitializationChunk(dataSource, dataSpec, trackFormat,
      trackSelectionReason, trackSelectionData, representationHolder.extractorWrapper);
}

@Override
public void onChunkLoadCompleted(Chunk chunk) {
  if (chunk instanceof InitializationChunk) {
    InitializationChunk initializationChunk = (InitializationChunk) chunk;
    RepresentationHolder representationHolder =
        representationHolders[trackSelection.indexOf(initializationChunk.trackFormat)];
    // The null check avoids overwriting an index obtained from the manifest with one obtained
    // from the stream. If the manifest defines an index then the stream shouldn't, but in cases
    // where it does we should ignore it.
    if (representationHolder.segmentIndex == null) {
      SeekMap seekMap = representationHolder.extractorWrapper.getSeekMap();
      if (seekMap != null) {
        representationHolder.segmentIndex = new DashWrappingSegmentIndex((ChunkIndex) seekMap);
      }
    }
  }
}

protected static Chunk newInitializationChunk(RepresentationHolder representationHolder,
    DataSource dataSource, Format trackFormat, int trackSelectionReason,
    Object trackSelectionData, RangedUri initializationUri, RangedUri indexUri) {
  RangedUri requestUri;
  String baseUrl = representationHolder.representation.baseUrl;
  if (initializationUri != null) {
    // It's common for initialization and index data to be stored adjacently. Attempt to merge
    // the two requests together to request both at once.
    requestUri = initializationUri.attemptMerge(indexUri, baseUrl);
    if (requestUri == null) {
      requestUri = initializationUri;
    }
  } else {
    requestUri = indexUri;
  }
  DataSpec dataSpec = new DataSpec(requestUri.resolveUri(baseUrl), requestUri.start,
      requestUri.length, representationHolder.representation.getCacheKey());
  return new InitializationChunk(dataSource, dataSpec, trackFormat,
      trackSelectionReason, trackSelectionData, representationHolder.extractorWrapper);
}

private static void loadInitializationData(DataSource dataSource,
    Representation representation, ChunkExtractorWrapper extractorWrapper, RangedUri requestUri)
    throws IOException, InterruptedException {
  DataSpec dataSpec = new DataSpec(requestUri.resolveUri(representation.baseUrl),
      requestUri.start, requestUri.length, representation.getCacheKey());
  InitializationChunk initializationChunk = new InitializationChunk(dataSource, dataSpec,
      representation.format, C.SELECTION_REASON_UNKNOWN, null /* trackSelectionData */,
      extractorWrapper);
  initializationChunk.load();
}

private static void loadInitializationData(DataSource dataSource,
    Representation representation, ChunkExtractorWrapper extractorWrapper, RangedUri requestUri)
    throws IOException, InterruptedException {
  DataSpec dataSpec = new DataSpec(requestUri.resolveUri(representation.baseUrl),
      requestUri.start, requestUri.length, representation.getCacheKey());
  InitializationChunk initializationChunk = new InitializationChunk(dataSource, dataSpec,
      representation.format, C.SELECTION_REASON_UNKNOWN, null /* trackSelectionData */,
      extractorWrapper);
  initializationChunk.load();
}