Java MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED屬性代碼示例

private int drainDecoder(long timeoutUs) {
    if (mIsDecoderEOS) return DRAIN_STATE_NONE;

    int result = mDecoder.dequeueOutputBuffer(mBufferInfo, timeoutUs);
    switch (result) {
        case MediaCodec.INFO_TRY_AGAIN_LATER:
            return DRAIN_STATE_NONE;
        case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
            mAudioChannel.setActualDecodedFormat(mDecoder.getOutputFormat());
        case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }

    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
        mIsDecoderEOS = true;
        mAudioChannel.drainDecoderBufferAndQueue(AudioChannel.BUFFER_INDEX_END_OF_STREAM, 0);
    } else if (mBufferInfo.size > 0) {
        mAudioChannel.drainDecoderBufferAndQueue(result, mBufferInfo.presentationTimeUs);
    }

    return DRAIN_STATE_CONSUMED;
}
 

private void handleCodecOutput(MediaCodec mediaCodec,
                               ByteBuffer[] codecOutputBuffers,
                               MediaCodec.BufferInfo bufferInfo,
                               OutputStream outputStream)
    throws IOException
{
  int codecOutputBufferIndex = mediaCodec.dequeueOutputBuffer(bufferInfo, 0);

  while (codecOutputBufferIndex != MediaCodec.INFO_TRY_AGAIN_LATER) {
    if (codecOutputBufferIndex >= 0) {
      ByteBuffer encoderOutputBuffer = codecOutputBuffers[codecOutputBufferIndex];

      encoderOutputBuffer.position(bufferInfo.offset);
      encoderOutputBuffer.limit(bufferInfo.offset + bufferInfo.size);

      if ((bufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != MediaCodec.BUFFER_FLAG_CODEC_CONFIG) {
        byte[] header = createAdtsHeader(bufferInfo.size - bufferInfo.offset);


        outputStream.write(header);

        byte[] data = new byte[encoderOutputBuffer.remaining()];
        encoderOutputBuffer.get(data);
        outputStream.write(data);
      }

      encoderOutputBuffer.clear();

      mediaCodec.releaseOutputBuffer(codecOutputBufferIndex, false);
    }  else if (codecOutputBufferIndex== MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
      codecOutputBuffers = mediaCodec.getOutputBuffers();
    }

    codecOutputBufferIndex = mediaCodec.dequeueOutputBuffer(bufferInfo, 0);
  }

}
 

/**
 * MediaCodec#dequeueOutputBuffer()の戻り値のチェック
 *
 * @param decoderStatus MediaCodec#dequeueOutputBuffer()の戻り値
 * @return true: デコード処理が行われた
 */
private boolean checkDecoderStatus(int decoderStatus) {
    if (decoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
        // dequeueOutputBufferの呼び出しがタイムアウト
        if (mInputDone) {
            Log.d(TAG, "no output from mDecoder available BUT the input is done.");
        }
    } else if (decoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
        Log.d(TAG, "mDecoder output buffers changed");
    } else if (decoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
        Log.d(TAG, "mDecoder output format changed");
    } else if (decoderStatus < 0) {
        Log.d(TAG, "unexpected result from encoder.dequeueOutputBuffer: "
                + decoderStatus);
    } else {
        return true;
    }

    return false;
}
 

/**
 * Reads bytes from the given recorder and encodes them with the given encoder.
 * Uses the (deprecated) Synchronous Processing using Buffer Arrays.
 * <p/>
 * Encoders (or codecs that generate compressed data) will create and return the codec specific
 * data before any valid output buffer in output buffers marked with the codec-config flag.
 * Buffers containing codec-specific-data have no meaningful timestamps.
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private void recorderEncoderLoop(MediaCodec codec, SpeechRecord speechRecord) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        codec.start();
        // Getting some buffers (e.g. 4 of each) to communicate with the codec
        ByteBuffer[] codecInputBuffers = codec.getInputBuffers();
        ByteBuffer[] codecOutputBuffers = codec.getOutputBuffers();
        Log.i("input buffers " + codecInputBuffers.length + "; output buffers: " + codecOutputBuffers.length);
        boolean doneSubmittingInput = false;
        int numRetriesDequeueOutputBuffer = 0;
        int index;
        while (true) {
            if (!doneSubmittingInput) {
                index = codec.dequeueInputBuffer(DEQUEUE_TIMEOUT);
                if (index >= 0) {
                    int size = queueInputBuffer(codec, codecInputBuffers, index, speechRecord);
                    if (size == -1) {
                        codec.queueInputBuffer(index, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
                        Log.i("enc: in: EOS");
                        doneSubmittingInput = true;
                    } else {
                        Log.i("enc: in: " + size);
                        mNumBytesSubmitted += size;
                    }
                } else {
                    Log.i("enc: in: timeout, will try again");
                }
            }
            MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
            index = codec.dequeueOutputBuffer(info, DEQUEUE_TIMEOUT);
            Log.i("enc: out: flags/index: " + info.flags + "/" + index);
            if (index == MediaCodec.INFO_TRY_AGAIN_LATER) {
                Log.i("enc: out: INFO_TRY_AGAIN_LATER: " + numRetriesDequeueOutputBuffer);
                if (++numRetriesDequeueOutputBuffer > MAX_NUM_RETRIES_DEQUEUE_OUTPUT_BUFFER) {
                    break;
                }
            } else if (index == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
                MediaFormat format = codec.getOutputFormat();
                Log.i("enc: out: INFO_OUTPUT_FORMAT_CHANGED: " + format.toString());
            } else if (index == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
                codecOutputBuffers = codec.getOutputBuffers();
                Log.i("enc: out: INFO_OUTPUT_BUFFERS_CHANGED");
            } else {
                dequeueOutputBuffer(codec, codecOutputBuffers, index, info);
                mNumBytesDequeued += info.size;
                if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
                    Log.i("enc: out: EOS");
                    break;
                }
            }
        }
        codec.stop();
        codec.release();
    }
}
 

private int drainEncoder(long timeoutUs) {
    if (mIsEncoderEOS) return DRAIN_STATE_NONE;

    int result = mEncoder.dequeueOutputBuffer(mBufferInfo, timeoutUs);
    switch (result) {
        case MediaCodec.INFO_TRY_AGAIN_LATER:
            return DRAIN_STATE_NONE;
        case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
            if (mActualOutputFormat != null) {
                throw new RuntimeException("Audio output format changed twice.");
            }
            mActualOutputFormat = mEncoder.getOutputFormat();
            mMuxer.setOutputFormat(SAMPLE_TYPE, mActualOutputFormat);
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
        case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
            mEncoderBuffers = new MediaCodecBufferCompatWrapper(mEncoder);
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }

    if (mActualOutputFormat == null) {
        throw new RuntimeException("Could not determine actual output format.");
    }

    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
        mIsEncoderEOS = true;
        mBufferInfo.set(0, 0, 0, mBufferInfo.flags);
    }
    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
        // SPS or PPS, which should be passed by MediaFormat.
        mEncoder.releaseOutputBuffer(result, false);
        return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }
    mMuxer.writeSampleData(SAMPLE_TYPE, mEncoderBuffers.getOutputBuffer(result), mBufferInfo);
    mWrittenPresentationTimeUs = mBufferInfo.presentationTimeUs;
    mEncoder.releaseOutputBuffer(result, false);
    return DRAIN_STATE_CONSUMED;
}
 

private int drainDecoder(long timeoutUs) {
    if (mIsDecoderEOS) return DRAIN_STATE_NONE;
    int result = mDecoder.dequeueOutputBuffer(mBufferInfo, timeoutUs);
    switch (result) {
        case MediaCodec.INFO_TRY_AGAIN_LATER:
            return DRAIN_STATE_NONE;
        case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
        case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }
    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
        mEncoder.signalEndOfInputStream();
        mIsDecoderEOS = true;
        mBufferInfo.size = 0;
    }
    boolean doRender = (mBufferInfo.size > 0);
    // NOTE: doRender will block if buffer (of encoder) is full.
    // Refer: http://bigflake.com/mediacodec/CameraToMpegTest.java.txt
    mDecoder.releaseOutputBuffer(result, doRender);
    if (doRender) {
        mDecoderOutputSurfaceWrapper.awaitNewImage();
        mDecoderOutputSurfaceWrapper.drawImage();
        mEncoderInputSurfaceWrapper.setPresentationTime(mBufferInfo.presentationTimeUs * 1000);
        mEncoderInputSurfaceWrapper.swapBuffers();
    }
    return DRAIN_STATE_CONSUMED;
}
 

protected void handleOutput() {
    Log.d(TAG, TRACK_TYPE + " handle output ");
    if ((mState == STATE_PLAYING || mState == STATE_SEEKING) && !mOutputDone) {
        final int decoderStatus;
        try {
            decoderStatus = mMediaCodec.dequeueOutputBuffer(mBufferInfo, TIMEOUT_USEC);
        } catch (IllegalStateException e) {
            Log.d(TAG, "can't dequeue output buffer: " + e.getMessage());
            return;
        }
        Log.d(TAG, TRACK_TYPE + " decoder status: " + decoderStatus);
        if (decoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
        } else if (decoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
            final MediaFormat newFormat = mMediaCodec.getOutputFormat();
            if (DEBUG) Log.d(TAG, TRACK_TYPE + " decoder output format changed: " + newFormat);
        } else if (decoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
            if (DEBUG) Log.d(TAG, TRACK_TYPE + " decoder output buffer changed: ");
        } else if (decoderStatus < 0) {
            throw new RuntimeException(
                    "unexpected result from " + TRACK_TYPE + " decoder.dequeueOutputBuffer: " + decoderStatus);
        } else {
            Log.d(TAG, TRACK_TYPE + " Out put");
            output(decoderStatus, mBufferInfo);
        }
        if ((mBufferInfo.flags == MediaCodec.BUFFER_FLAG_END_OF_STREAM) && mState != STATE_SEEKING) {
            Log.d(TAG, TRACK_TYPE + ":output EOS");
            mBufferInfo = new MediaCodec.BufferInfo();
            mOutputDone = true;
            synchronized (mWeakPlayer.get().getSync()) {
                mWeakPlayer.get().getSync().notify();
            }
        }
    }
}
 

private int drainEncoder(long timeoutUs) {
    if (mIsEncoderEOS) return DRAIN_STATE_NONE;

    int result = mEncoder.dequeueOutputBuffer(mBufferInfo, timeoutUs);
    switch (result) {
        case MediaCodec.INFO_TRY_AGAIN_LATER:
            return DRAIN_STATE_NONE;
        case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
            if (mActualOutputFormat != null) {
                throw new RuntimeException("Audio output format changed twice.");
            }
            mActualOutputFormat = mEncoder.getOutputFormat();
            mMuxer.setOutputFormat(QueuedMuxer.SampleType.AUDIO, mActualOutputFormat);
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
        case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }

    if (mActualOutputFormat == null) {
        throw new RuntimeException("Could not determine actual output format.");
    }

    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
        mIsEncoderEOS = true;
        mBufferInfo.set(0, 0, 0, mBufferInfo.flags);
    }
    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
        // SPS or PPS, which should be passed by MediaFormat.
        mEncoder.releaseOutputBuffer(result, false);
        return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }
    mMuxer.writeSampleData(QueuedMuxer.SampleType.AUDIO, MediaUtil.getOutputBuffer(mEncoder, result), mBufferInfo);
    mEncoder.releaseOutputBuffer(result, false);
    return DRAIN_STATE_CONSUMED;
}
 

private int drainDecoder(long timeoutUs) {
    if (mIsDecoderEOS) return DRAIN_STATE_NONE;

    int result = mDecoder.dequeueOutputBuffer(mBufferInfo, timeoutUs);
    switch (result) {
        case MediaCodec.INFO_TRY_AGAIN_LATER:
            return DRAIN_STATE_NONE;
        case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
        case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }

    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
        mEncoder.signalEndOfInputStream();
        mIsDecoderEOS = true;
        mBufferInfo.size = 0;
    }
    boolean doRender = (mBufferInfo.size > 0);
    // NOTE: doRender will block if buffer (of encoder) is full.
    // Refer: http://bigflake.com/mediacodec/CameraToMpegTest.java.txt
    mDecoder.releaseOutputBuffer(result, doRender);
    if (doRender) {
        mDecoderOutputSurfaceWrapper.awaitNewImage();
        mDecoderOutputSurfaceWrapper.drawImage(mBufferInfo.presentationTimeUs * 1000);
        mEncoderInputSurfaceWrapper.setPresentationTime(mBufferInfo.presentationTimeUs * 1000);
        // swapBuffers後之前的OpenGL操作會渲染到InputSurface綁定的Surface中
        mEncoderInputSurfaceWrapper.swapBuffers();
    }

    return DRAIN_STATE_CONSUMED;
}
 

private int drainEncoder(long timeoutUs) {
    if (mIsEncoderEOS) return DRAIN_STATE_NONE;

    int result = mEncoder.dequeueOutputBuffer(mBufferInfo, timeoutUs);
    switch (result) {
        case MediaCodec.INFO_TRY_AGAIN_LATER:
            return DRAIN_STATE_NONE;
        case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
            if (mActualOutputFormat != null) {
                throw new RuntimeException("Video output format changed twice.");
            }
            mActualOutputFormat = mEncoder.getOutputFormat();
            mMuxer.setOutputFormat(QueuedMuxer.SampleType.VIDEO, mActualOutputFormat);
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
        case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
            mEncoderOutputBuffers = mEncoder.getOutputBuffers();
            return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }

    if (mActualOutputFormat == null) {
        throw new RuntimeException("Could not determine actual output format.");
    }

    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
        mIsEncoderEOS = true;
        mBufferInfo.set(0, 0, 0, mBufferInfo.flags);
    }
    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
        // SPS or PPS, which should be passed by MediaFormat.
        mEncoder.releaseOutputBuffer(result, false);
        return DRAIN_STATE_SHOULD_RETRY_IMMEDIATELY;
    }
    mMuxer.writeSampleData(QueuedMuxer.SampleType.VIDEO, mEncoderOutputBuffers[result], mBufferInfo);
    mEncoder.releaseOutputBuffer(result, false);
    return DRAIN_STATE_CONSUMED;
}
 

/**
 * @return True if it may be possible to drain more output data. False otherwise.
 * @throws ExoPlaybackException If an error occurs draining the output buffer.
 */
@SuppressWarnings("deprecation")
private boolean drainOutputBuffer(long positionUs, long elapsedRealtimeUs)
    throws ExoPlaybackException {
  if (outputStreamEnded) {
    return false;
  }

  if (outputIndex < 0) {
    outputIndex = codec.dequeueOutputBuffer(outputBufferInfo, getDequeueOutputBufferTimeoutUs());
  }

  if (outputIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
    processOutputFormat();
    return true;
  } else if (outputIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
    outputBuffers = codec.getOutputBuffers();
    codecCounters.outputBuffersChangedCount++;
    return true;
  } else if (outputIndex < 0) {
    if (codecNeedsEosPropagationWorkaround && (inputStreamEnded
        || codecReinitializationState == REINITIALIZATION_STATE_WAIT_END_OF_STREAM)) {
      processEndOfStream();
      return true;
    }
    return false;
  }

  if ((outputBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
    processEndOfStream();
    return false;
  }

  int decodeOnlyIndex = getDecodeOnlyIndex(outputBufferInfo.presentationTimeUs);
  if (processOutputBuffer(positionUs, elapsedRealtimeUs, codec, outputBuffers[outputIndex],
      outputBufferInfo, outputIndex, decodeOnlyIndex != -1)) {
    onProcessedOutputBuffer(outputBufferInfo.presentationTimeUs);
    if (decodeOnlyIndex != -1) {
      decodeOnlyPresentationTimestamps.remove(decodeOnlyIndex);
    }
    outputIndex = -1;
    return true;
  }

  return false;
}
 

/**
 * Extracts all pending data from the encoder.
 * <p>
 * If endOfStream is not set, this returns when there is no more data to drain.  If it
 * is set, we send EOS to the encoder, and then iterate until we see EOS on the output.
 * Calling this with endOfStream set should be done once, right before stopping the muxer.
 */
@SuppressWarnings("deprecation")
private void drainEncoder(boolean eos) {
    checkState();

    //logv("Drain encoder: " + eos);
    if (eos) {
        //logv("Sending EOS to encoder");
        mEncoder.signalEndOfInputStream();
    }

    int encoderStatus;
    while ((encoderStatus = getEncoderStatus(eos)) != MediaCodec.INFO_TRY_AGAIN_LATER) {
        switch (encoderStatus) {
            case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
                throw new RuntimeException("Output buffers changed twice");
            case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
                if (mTrackId != -1) {
                    throw new RuntimeException("Format changed twice");
                }
                // Now that we have the Magic Goodies, start the muxer
                final MediaFormat format = mEncoder.getOutputFormat();
                //logv("Encoder output format changed: " + format);
                mTrackId = mMuxer.addTrack(format);
                mMuxer.start();
                break;
            default:
                if (encoderStatus >= 0) {
                    final ByteBuffer encodedData = mOutputBuffers[encoderStatus];
                    if (encodedData == null) {
                        throw new RuntimeException (
                                "EncoderOutputBuffer " + encoderStatus + " was null"
                        );
                    }
                    if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
                        // The codec config data was pulled out and fed to the muxer when we got
                        // the INFO_OUTPUT_FORMAT_CHANGED status.  Ignore it.
                        //logv("ignoring BUFFER_FLAG_CODEC_CONFIG");
                        mBufferInfo.size = 0;
                    }
                    if (mBufferInfo.size != 0) {
                        if (mTrackId == -1) {
                            throw new RuntimeException("Muxer hasn't started");
                        }
                        // Adjust the ByteBuffer values to match BufferInfo (not needed?)
                        encodedData.position(mBufferInfo.offset);
                        encodedData.limit(mBufferInfo.offset + mBufferInfo.size);
                        mMuxer.writeSampleData(mTrackId, encodedData, mBufferInfo);
                        //logv("Sent " + mBufferInfo.size + " bytes to muxer");
                    }
                    mEncoder.releaseOutputBuffer(encoderStatus, false);
                } else {
                    //noinspection StatementWithEmptyBody
                    if (encoderStatus != INFO_NO_OUTPUT_AVAILABLE_YET) {
                        logw("unexpected encoder status: " + encoderStatus);
                    }
                }
                break;
        }
    }
}
 

private DecodedOutputBuffer dequeueOutputBuffer(int dequeueTimeoutMs) {
  checkOnMediaCodecThread();
  if (decodeStartTimeMs.isEmpty()) {
    return null;
  }
  // Drain the decoder until receiving a decoded buffer or hitting
  // MediaCodec.INFO_TRY_AGAIN_LATER.
  final MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
  while (true) {
    final int result =
        mediaCodec.dequeueOutputBuffer(info, TimeUnit.MILLISECONDS.toMicros(dequeueTimeoutMs));
    switch (result) {
      case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
        outputBuffers = mediaCodec.getOutputBuffers();
        Logging.d(TAG, "Decoder output buffers changed: " + outputBuffers.length);
        if (hasDecodedFirstFrame) {
          throw new RuntimeException("Unexpected output buffer change event.");
        }
        break;
      case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
        MediaFormat format = mediaCodec.getOutputFormat();
        Logging.d(TAG, "Decoder format changed: " + format.toString());
        int new_width = format.getInteger(MediaFormat.KEY_WIDTH);
        int new_height = format.getInteger(MediaFormat.KEY_HEIGHT);
        if (hasDecodedFirstFrame && (new_width != width || new_height != height)) {
          throw new RuntimeException("Unexpected size change. Configured " + width + "*" + height
              + ". New " + new_width + "*" + new_height);
        }
        width = format.getInteger(MediaFormat.KEY_WIDTH);
        height = format.getInteger(MediaFormat.KEY_HEIGHT);

        if (!useSurface && format.containsKey(MediaFormat.KEY_COLOR_FORMAT)) {
          colorFormat = format.getInteger(MediaFormat.KEY_COLOR_FORMAT);
          Logging.d(TAG, "Color: 0x" + Integer.toHexString(colorFormat));
          if (!supportedColorList.contains(colorFormat)) {
            throw new IllegalStateException("Non supported color format: " + colorFormat);
          }
        }
        if (format.containsKey("stride")) {
          stride = format.getInteger("stride");
        }
        if (format.containsKey("slice-height")) {
          sliceHeight = format.getInteger("slice-height");
        }
        Logging.d(TAG, "Frame stride and slice height: " + stride + " x " + sliceHeight);
        stride = Math.max(width, stride);
        sliceHeight = Math.max(height, sliceHeight);
        break;
      case MediaCodec.INFO_TRY_AGAIN_LATER:
        return null;
      default:
        hasDecodedFirstFrame = true;
        TimeStamps timeStamps = decodeStartTimeMs.remove();
        long decodeTimeMs = SystemClock.elapsedRealtime() - timeStamps.decodeStartTimeMs;
        if (decodeTimeMs > MAX_DECODE_TIME_MS) {
          Logging.e(TAG, "Very high decode time: " + decodeTimeMs + "ms"
                  + ". Q size: " + decodeStartTimeMs.size()
                  + ". Might be caused by resuming H264 decoding after a pause.");
          decodeTimeMs = MAX_DECODE_TIME_MS;
        }
        return new DecodedOutputBuffer(result, info.offset, info.size,
            TimeUnit.MICROSECONDS.toMillis(info.presentationTimeUs), timeStamps.timeStampMs,
            timeStamps.ntpTimeStampMs, decodeTimeMs, SystemClock.elapsedRealtime());
    }
  }
}
 

/**
 * 編碼後的數據寫入Muxer中
 */
private void writeMuxerDataFromEncoding(boolean isEOS) {

    if (!isEncoding) {
        return;
    }

    Log.d(TAG, "writeMuxerDataFromEncoding isEOS:" + isEOS);

    ByteBuffer[] outputBuffers = mMediaCodec.getOutputBuffers();
    while (isEncoding) {
        int outputBufferIndex = mMediaCodec.dequeueOutputBuffer(mBufferInfo, 10);
        Log.d(TAG, "outputBufferIndex=" + outputBufferIndex + " flags:" + mBufferInfo.flags);
        if (outputBufferIndex >= 0) {

            if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
                mBufferInfo.size = 0;
            }

            ByteBuffer encodedData = outputBuffers[outputBufferIndex];

            if (mBufferInfo.size != 0) {
                mMediaMuxer.writeSampleData(mTrackIndex, encodedData, mBufferInfo);
            }

            mMediaCodec.releaseOutputBuffer(outputBufferIndex, false);

            if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
                Log.e(TAG, "Encoding  end of stream");
                isEncoding = false;
                break;
            }

        } else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
            outputBuffers = mMediaCodec.getOutputBuffers();
        } else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
            MediaFormat mediaFormat = mMediaCodec.getOutputFormat();
            mTrackIndex = mMediaMuxer.addAudioTrack(mediaFormat);
            mMediaMuxer.start();
            Log.d(TAG, "audio mediaMuxer start");
        } else if (outputBufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {
            if (!isEOS) {
                break;
            }
        }

    }
}
 

/**
 * 編碼後的數據寫入Muxer中
 */
private void writeMuxerDataFromEncoding(boolean isEOS) {
    Log.d(TAG, "writeMuxerDataFromEncoding start isEOS:" + isEOS);
    if (!isEncoding) {
        Log.d(TAG, "writeMuxerDataFromEncoding end isEOS:" + isEOS + ",isEncoding:" + isEncoding);
        return;
    }

    if (isRequestEOS != isEOS) {
        //請求停止了，但是仍舊有離屏的畫麵更新回調，要求編碼，丟棄
        Log.d(TAG, "Already request eos,so ignore dequeuebuffer.");
        Log.d(TAG, "writeMuxerDataFromEncoding end isEOS:" + isEOS + ",isRequestEOS:" + isRequestEOS);
        isEncoding = true;
        return;
    }

    if (isEOS && !hasFrameData) {
        //請求停止，但是沒有寫入過一幀數據，不能從MediaCodec中拉取數據，直接返回
        Log.d(TAG, "writeMuxerDataFromEncoding end without frame!");
        mMediaMuxer.cancel();
        isEncoding = true;
        return;
    }

    if (isEOS) {
        mMediaCodec.signalEndOfInputStream();
    }

    ByteBuffer[] outputBuffers = mMediaCodec.getOutputBuffers();

    while (isEncoding) {
        int outputBufferIndex = mMediaCodec.dequeueOutputBuffer(mBufferInfo, 10);
        Log.d(TAG, "outputBufferIndex=" + outputBufferIndex + " flags:" + mBufferInfo.flags);
        if (outputBufferIndex >= 0) {

            if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
                mBufferInfo.size = 0;
            }

            ByteBuffer encodedData = outputBuffers[outputBufferIndex];

            if (mBufferInfo.size != 0) {
                mMediaMuxer.writeSampleData(mTrackIndex, encodedData, mBufferInfo);
                hasFrameData = true;
            }

            mMediaCodec.releaseOutputBuffer(outputBufferIndex, false);


            if ((mBufferInfo.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
                Log.e(TAG, "Encoding  end of stream");
                isEncoding = false;
                break;      // out of while
            }

        } else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
            outputBuffers = mMediaCodec.getOutputBuffers();
        } else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
            MediaFormat mediaFormat = mMediaCodec.getOutputFormat();
            mTrackIndex = mMediaMuxer.addVideoTrack(mediaFormat);
            mMediaMuxer.start();
        } else if (outputBufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {
            if (!isEOS) {
                break;
            }
        }

    }
    Log.d(TAG, "writeMuxerDataFromEncoding end isEOS:" + isEOS);
}