android.media.MediaExtractor.getSampleTrackIndex()方法的使用及代码示例

x33g5p2x  于2022-01-25 转载在 其他  
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本文整理了Java中android.media.MediaExtractor.getSampleTrackIndex()方法的一些代码示例，展示了MediaExtractor.getSampleTrackIndex()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。MediaExtractor.getSampleTrackIndex()方法的具体详情如下：
包路径：android.media.MediaExtractor
类名称：MediaExtractor
方法名：getSampleTrackIndex

MediaExtractor.getSampleTrackIndex介绍

暂无

代码示例

代码示例来源：origin: guoxiaoxing/phoenix

@SuppressLint("Assert")
@Override
public boolean stepPipeline() {
  if (mIsEOS) return false;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex < 0) {
    mBuffer.clear();
    mBufferInfo.set(0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    mMuxer.writeSampleData(mSampleType, mBuffer, mBufferInfo);
    mIsEOS = true;
    return true;
  }
  if (trackIndex != mTrackIndex) return false;
  mBuffer.clear();
  int sampleSize = mExtractor.readSampleData(mBuffer, 0);
  assert sampleSize <= mBufferSize;
  boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  int flags = isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0;
  mBufferInfo.set(0, sampleSize, mExtractor.getSampleTime(), flags);
  mMuxer.writeSampleData(mSampleType, mBuffer, mBufferInfo);
  mWrittenPresentationTimeUs = mBufferInfo.presentationTimeUs;
  mExtractor.advance();
  return true;
}

代码示例来源：origin: guoxiaoxing/phoenix

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
  boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: guoxiaoxing/phoenix

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = mExtractor.readSampleData(mDecoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: MasayukiSuda/GPUVideo-android

@SuppressLint("Assert")
public boolean stepPipeline() {
  if (isEOS) return false;
  int trackIndex = mediaExtractor.getSampleTrackIndex();
  if (trackIndex < 0) {
    buffer.clear();
    bufferInfo.set(0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    muxRender.writeSampleData(sampleType, buffer, bufferInfo);
    isEOS = true;
    return true;
  }
  if (trackIndex != this.trackIndex) return false;
  buffer.clear();
  int sampleSize = mediaExtractor.readSampleData(buffer, 0);
  assert sampleSize <= bufferSize;
  boolean isKeyFrame = (mediaExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  int flags = isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0;
  bufferInfo.set(0, sampleSize, mediaExtractor.getSampleTime(), flags);
  muxRender.writeSampleData(sampleType, buffer, bufferInfo);
  writtenPresentationTimeUs = bufferInfo.presentationTimeUs;
  mediaExtractor.advance();
  return true;
}

代码示例来源：origin: LLhon/Android-Video-Editor

@SuppressLint("Assert")
public boolean stepPipeline() {
  if (isEOS) return false;
  int trackIndex = mediaExtractor.getSampleTrackIndex();
  if (trackIndex < 0) {
    buffer.clear();
    bufferInfo.set(0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    muxRender.writeSampleData(sampleType, buffer, bufferInfo);
    isEOS = true;
    return true;
  }
  if (trackIndex != this.trackIndex) return false;
  buffer.clear();
  int sampleSize = mediaExtractor.readSampleData(buffer, 0);
  assert sampleSize <= bufferSize;
  boolean isKeyFrame = (mediaExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  int flags = isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0;
  bufferInfo.set(0, sampleSize, mediaExtractor.getSampleTime(), flags);
  muxRender.writeSampleData(sampleType, buffer, bufferInfo);
  writtenPresentationTimeUs = bufferInfo.presentationTimeUs;
  mediaExtractor.advance();
  return true;
}

代码示例来源：origin: ypresto/android-transcoder

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
  boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: MasayukiSuda/Mp4Composer-android

private int drainExtractor() {
  if (isExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mediaExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != this.trackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = decoder.dequeueInputBuffer(0);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    isExtractorEOS = true;
    decoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mediaExtractor.readSampleData(decoderInputBuffers[result], 0);
  boolean isKeyFrame = (mediaExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  decoder.queueInputBuffer(result, 0, sampleSize, mediaExtractor.getSampleTime() / timeScale, isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mediaExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: windrunnerlihuan/DogCamera

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
  boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: GoBelieveIO/im_android

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
  boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: MasayukiSuda/GPUVideo-android

private int drainExtractor() {
  if (isExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mediaExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != this.trackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = decoder.dequeueInputBuffer(0);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    isExtractorEOS = true;
    decoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mediaExtractor.readSampleData(decoderInputBuffers[result], 0);
  boolean isKeyFrame = (mediaExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  decoder.queueInputBuffer(result, 0, sampleSize, mediaExtractor.getSampleTime() / timeScale, isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mediaExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: kriztan/Pix-Art-Messenger

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
  boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: LLhon/Android-Video-Editor

private int drainExtractor() {
  if (isExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mediaExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != this.trackIndex) {
    return DRAIN_STATE_NONE;
  }
  int result = decoder.dequeueInputBuffer(0);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    isExtractorEOS = true;
    decoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  int sampleSize = mediaExtractor.readSampleData(decoderInputBuffers[result], 0);
  boolean isKeyFrame = (mediaExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  decoder.queueInputBuffer(result, 0, sampleSize, mediaExtractor.getSampleTime() / timeScale, isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mediaExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: stackoverflow.com

MediaExtractor extractor = new MediaExtractor();
extractor.setDataSource(...);
int numTracks = extractor.getTrackCount();
for (int i = 0; i < numTracks; ++i) {
 MediaFormat format = extractor.getTrackFormat(i);
 String mime = format.getString(MediaFormat.KEY_MIME);
 if (weAreInterestedInThisTrack) {
  extractor.selectTrack(i);
 }
}
ByteBuffer inputBuffer = ByteBuffer.allocate(...)
while (extractor.readSampleData(inputBuffer, ...) >= 0) {
 int trackIndex = extractor.getSampleTrackIndex();
 long presentationTimeUs = extractor.getSampleTime();
 ...
 extractor.advance();
}
extractor.release();
extractor = null;

代码示例来源：origin: LLhon/Android-Video-Editor

private int drainExtractor(long timeoutUs) {
  if (isExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = extractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != this.trackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = decoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    isExtractorEOS = true;
    decoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = extractor.readSampleData(decoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (extractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  decoder.queueInputBuffer(result, 0, sampleSize, extractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  extractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: GoBelieveIO/im_android

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = mExtractor.readSampleData(mDecoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: ypresto/android-transcoder

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = mExtractor.readSampleData(mDecoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: MasayukiSuda/Mp4Composer-android

private int drainExtractor(long timeoutUs) {
  if (isExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = extractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != this.trackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = decoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    isExtractorEOS = true;
    decoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = extractor.readSampleData(decoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (extractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  decoder.queueInputBuffer(result, 0, sampleSize, extractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  extractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: windrunnerlihuan/DogCamera

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = mExtractor.readSampleData(mDecoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: MasayukiSuda/GPUVideo-android

private int drainExtractor(long timeoutUs) {
  if (isExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = extractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != this.trackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = decoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    isExtractorEOS = true;
    decoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = extractor.readSampleData(decoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (extractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  decoder.queueInputBuffer(result, 0, sampleSize, extractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  extractor.advance();
  return DRAIN_STATE_CONSUMED;
}

代码示例来源：origin: kriztan/Pix-Art-Messenger

private int drainExtractor(long timeoutUs) {
  if (mIsExtractorEOS) return DRAIN_STATE_NONE;
  int trackIndex = mExtractor.getSampleTrackIndex();
  if (trackIndex >= 0 && trackIndex != mTrackIndex) {
    return DRAIN_STATE_NONE;
  }
  final int result = mDecoder.dequeueInputBuffer(timeoutUs);
  if (result < 0) return DRAIN_STATE_NONE;
  if (trackIndex < 0) {
    mIsExtractorEOS = true;
    mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
    return DRAIN_STATE_NONE;
  }
  final int sampleSize = mExtractor.readSampleData(mDecoderBuffers.getInputBuffer(result), 0);
  final boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
  mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
  mExtractor.advance();
  return DRAIN_STATE_CONSUMED;
}

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