Java TrackOutput类代码示例

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
@Override
public void consume(ParsableByteArray data) {
  if (writingSample) {
    if (bytesToCheck == 2 && !checkNextByte(data, 0x20)) {
      // Failed to check data_identifier
      return;
    }
    if (bytesToCheck == 1 && !checkNextByte(data, 0x00)) {
      // Check and discard the subtitle_stream_id
      return;
    }
    int dataPosition = data.getPosition();
    int bytesAvailable = data.bytesLeft();
    for (TrackOutput output : outputs) {
      data.setPosition(dataPosition);
      output.sampleData(data, bytesAvailable);
    }
    sampleBytesWritten += bytesAvailable;
  }
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
public void testCustomPesReader() throws Exception {
  CustomEsReaderFactory factory = new CustomEsReaderFactory();
  TsExtractor tsExtractor = new TsExtractor(new TimestampAdjuster(0), factory, false);
  FakeExtractorInput input = new FakeExtractorInput.Builder()
      .setData(TestUtil.getByteArray(getInstrumentation(), "ts/sample.ts"))
      .setSimulateIOErrors(false)
      .setSimulateUnknownLength(false)
      .setSimulatePartialReads(false).build();
  FakeExtractorOutput output = new FakeExtractorOutput();
  tsExtractor.init(output);
  tsExtractor.seek(input.getPosition());
  PositionHolder seekPositionHolder = new PositionHolder();
  int readResult = Extractor.RESULT_CONTINUE;
  while (readResult != Extractor.RESULT_END_OF_INPUT) {
    readResult = tsExtractor.read(input, seekPositionHolder);
  }
  CustomEsReader reader = factory.reader;
  assertEquals(2, reader.packetsRead);
  TrackOutput trackOutput = reader.getTrackOutput();
  assertTrue(trackOutput == output.trackOutputs.get(257 /* PID of audio track. */));
  assertEquals(
      Format.createTextSampleFormat("Overriding format", "mime", null, 0, 0, "und", null, 0),
      ((FakeTrackOutput) trackOutput).format);
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
  for (int i = 0; i < outputs.length; i++) {
    idGenerator.generateNewId();
    TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT);
    Format channelFormat = closedCaptionFormats.get(i);
    String channelMimeType = channelFormat.sampleMimeType;
    Assertions.checkArgument(MimeTypes.APPLICATION_CEA608.equals(channelMimeType)
        || MimeTypes.APPLICATION_CEA708.equals(channelMimeType),
        "Invalid closed caption mime type provided: " + channelMimeType);
    String formatId = channelFormat.id != null ? channelFormat.id : idGenerator.getFormatId();
    output.format(Format.createTextSampleFormat(formatId, channelMimeType, null, Format.NO_VALUE,
        channelFormat.selectionFlags, channelFormat.language, channelFormat.accessibilityChannel,
        null));
    outputs[i] = output;
  }
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
@Override
public int read(ExtractorInput input, PositionHolder seekPosition)
    throws IOException, InterruptedException {
  if (streamReader == null) {
    if (!sniffInternal(input)) {
      throw new ParserException("Failed to determine bitstream type");
    }
    input.resetPeekPosition();
  }
  if (!streamReaderInitialized) {
    TrackOutput trackOutput = output.track(0, C.TRACK_TYPE_AUDIO);
    output.endTracks();
    streamReader.init(output, trackOutput);
    streamReaderInitialized = true;
  }
  return streamReader.read(input, seekPosition);
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
@Override
public TrackOutput track(int id, int type) {
  int trackCount = sampleQueues.length;
  for (int i = 0; i < trackCount; i++) {
    if (sampleQueueTrackIds[i] == id) {
      return sampleQueues[i];
    }
  }
  SampleQueue trackOutput = new SampleQueue(allocator);
  trackOutput.setUpstreamFormatChangeListener(this);
  sampleQueueTrackIds = Arrays.copyOf(sampleQueueTrackIds, trackCount + 1);
  sampleQueueTrackIds[trackCount] = id;
  sampleQueues = Arrays.copyOf(sampleQueues, trackCount + 1);
  sampleQueues[trackCount] = trackOutput;
  return trackOutput;
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
public void testCustomPesReader() throws Exception {
  CustomTsPayloadReaderFactory factory = new CustomTsPayloadReaderFactory(true, false);
  TsExtractor tsExtractor = new TsExtractor(TsExtractor.MODE_MULTI_PMT, new TimestampAdjuster(0),
      factory);
  FakeExtractorInput input = new FakeExtractorInput.Builder()
      .setData(TestUtil.getByteArray(getInstrumentation(), "ts/sample.ts"))
      .setSimulateIOErrors(false)
      .setSimulateUnknownLength(false)
      .setSimulatePartialReads(false).build();
  FakeExtractorOutput output = new FakeExtractorOutput();
  tsExtractor.init(output);
  PositionHolder seekPositionHolder = new PositionHolder();
  int readResult = Extractor.RESULT_CONTINUE;
  while (readResult != Extractor.RESULT_END_OF_INPUT) {
    readResult = tsExtractor.read(input, seekPositionHolder);
  }
  CustomEsReader reader = factory.esReader;
  assertEquals(2, reader.packetsRead);
  TrackOutput trackOutput = reader.getTrackOutput();
  assertTrue(trackOutput == output.trackOutputs.get(257 /* PID of audio track. */));
  assertEquals(
      Format.createTextSampleFormat("1/257", "mime", null, 0, 0, "und", null, 0),
      ((FakeTrackOutput) trackOutput).format);
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
private TrackOutput buildTrackOutput(long subsampleOffsetUs) {
  TrackOutput trackOutput = output.track(0, C.TRACK_TYPE_TEXT);
  trackOutput.format(Format.createTextSampleFormat(null, MimeTypes.TEXT_VTT, null,
      Format.NO_VALUE, 0, language, null, subsampleOffsetUs));
  output.endTracks();
  return trackOutput;
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
public SampleReader(TrackOutput output, boolean allowNonIdrKeyframes,
    boolean detectAccessUnits) {
  this.output = output;
  this.allowNonIdrKeyframes = allowNonIdrKeyframes;
  this.detectAccessUnits = detectAccessUnits;
  sps = new SparseArray<>();
  pps = new SparseArray<>();
  previousSliceHeader = new SliceHeaderData();
  sliceHeader = new SliceHeaderData();
  buffer = new byte[DEFAULT_BUFFER_SIZE];
  bitArray = new ParsableNalUnitBitArray(buffer, 0, 0);
  reset();
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
  for (int i = 0; i < outputs.length; i++) {
    idGenerator.generateNewId();
    TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT);
    Format channelFormat = closedCaptionFormats.get(i);
    String channelMimeType = channelFormat.sampleMimeType;
    Assertions.checkArgument(MimeTypes.APPLICATION_CEA608.equals(channelMimeType)
        || MimeTypes.APPLICATION_CEA708.equals(channelMimeType),
        "Invalid closed caption mime type provided: " + channelMimeType);
    output.format(Format.createTextSampleFormat(idGenerator.getFormatId(), channelMimeType, null,
        Format.NO_VALUE, channelFormat.selectionFlags, channelFormat.language,
        channelFormat.accessibilityChannel, null));
    outputs[i] = output;
  }
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
/**
 * Sets the state to STATE_READING_SAMPLE.
 *
 * @param outputToUse TrackOutput object to write the sample to
 * @param currentSampleDuration Duration of the sample to be read
 * @param priorReadBytes Size of prior read bytes
 * @param sampleSize Size of the sample
 */
private void setReadingSampleState(TrackOutput outputToUse, long currentSampleDuration,
    int priorReadBytes, int sampleSize) {
  state = STATE_READING_SAMPLE;
  bytesRead = priorReadBytes;
  this.currentOutput = outputToUse;
  this.currentSampleDuration = currentSampleDuration;
  this.sampleSize = sampleSize;
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
@Override
public void createTracks(ExtractorOutput extractorOutput, TrackIdGenerator idGenerator) {
  for (int i = 0; i < outputs.length; i++) {
    DvbSubtitleInfo subtitleInfo = subtitleInfos.get(i);
    idGenerator.generateNewId();
    TrackOutput output = extractorOutput.track(idGenerator.getTrackId(), C.TRACK_TYPE_TEXT);
    output.format(Format.createImageSampleFormat(idGenerator.getFormatId(),
        MimeTypes.APPLICATION_DVBSUBS, null, Format.NO_VALUE,
        Collections.singletonList(subtitleInfo.initializationData), subtitleInfo.language, null));
    outputs[i] = output;
  }
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
@Override
public void packetFinished() {
  if (writingSample) {
    for (TrackOutput output : outputs) {
      output.sampleMetadata(sampleTimeUs, C.BUFFER_FLAG_KEY_FRAME, sampleBytesWritten, 0, null);
    }
    writingSample = false;
  }
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
@Override
public void init(ExtractorOutput output) {
  TrackOutput trackOutput = output.track(0, C.TRACK_TYPE_AUDIO);
  output.endTracks();
  // TODO: fix the case if sniff() isn't called
  streamReader.init(output, trackOutput);
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
void init(ExtractorOutput output, TrackOutput trackOutput) {
  this.extractorOutput = output;
  this.trackOutput = trackOutput;
  this.oggPacket = new OggPacket();

  reset(true);
}
 

import com.google.android.exoplayer2.extractor.TrackOutput; //导入依赖的package包/类
private void maybeInitExtraTracks() {
  if ((flags & FLAG_ENABLE_EMSG_TRACK) != 0 && eventMessageTrackOutput == null) {
    eventMessageTrackOutput = extractorOutput.track(trackBundles.size(), C.TRACK_TYPE_METADATA);
    eventMessageTrackOutput.format(Format.createSampleFormat(null, MimeTypes.APPLICATION_EMSG,
        Format.OFFSET_SAMPLE_RELATIVE));
  }
  if ((flags & FLAG_ENABLE_CEA608_TRACK) != 0 && cea608TrackOutputs == null) {
    TrackOutput cea608TrackOutput = extractorOutput.track(trackBundles.size() + 1,
        C.TRACK_TYPE_TEXT);
    cea608TrackOutput.format(Format.createTextSampleFormat(null, MimeTypes.APPLICATION_CEA608,
        null, Format.NO_VALUE, 0, null, null));
    cea608TrackOutputs = new TrackOutput[] {cea608TrackOutput};
  }
}