下面列出了android.media.MediaCodec# getOutputFormat ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private void frameDisplay(MediaCodec decoder) {
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
int srcColorFormat = 0;
int srcStride = 0;
int outputBufferId = decoder.dequeueOutputBuffer(info, DEFAULT_TIMEOUT_US);
if (outputBufferId >= 0) {
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
sawOutputEOS = false;
}
boolean doRender = (info.size != 0);
if (doRender) {
outputFrameCount++;
ByteBuffer b = null;
Image image = null;
if (Helper.isUpperThanAPI21()) {
image = decoder.getOutputImage(outputBufferId);
if(image!=null) {
// Log.d(TAG, "image:" + image.getWidth() + "," + image.getHeight() + "," + image.getFormat());
} else {
b = decoder.getOutputBuffer(outputBufferId);
MediaFormat format = decoder.getOutputFormat(outputBufferId);
srcColorFormat = format.getInteger(KEY_COLOR_FORMAT);
srcStride = format.getInteger(KEY_STRIDE);
}
} else {
b = outputByteBuffers[outputBufferId];
}
if(time==-1) time = System.currentTimeMillis();
else {
long diff = (System.currentTimeMillis()-time);
if(diff<33) {
//waitMs((33*1000-diff)/1000);
waitMs((33-diff));
}
time = System.currentTimeMillis();
}
if(callback!=null) {
if(image!=null) callback.onImageReady(image);
else if (b!=null) callback.onFrameReady(b,info.offset, width, height, srcColorFormat , srcStride);
}
decoder.releaseOutputBuffer(outputBufferId, false);
}
}
}
/**
* 需要改变音频速率的情况下，需要先解码->改变速率->编码
*/
private void decodeToPCM(MediaCodec decoder, MediaExtractor extractor, MediaFormat oriAudioFormat, String outPath, Long endTimeUs) throws IOException {
int maxBufferSize = getAudioMaxBufferSize(oriAudioFormat);
ByteBuffer buffer = ByteBuffer.allocateDirect(maxBufferSize);
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
//调整音频速率需要重解码音频帧
decoder.configure(oriAudioFormat, null, null, 0);
decoder.start();
boolean decodeDone = false;
boolean decodeInputDone = false;
final int TIMEOUT_US = 2500;
File pcmFile = new File(outPath);
FileChannel writeChannel = new FileOutputStream(pcmFile).getChannel();
ByteBuffer[] inputBuffers = null;
ByteBuffer[] outputBuffers = null;
try {
while (!decodeDone) {
if (!decodeInputDone) {
boolean eof = false;
int decodeInputIndex = decoder.dequeueInputBuffer(TIMEOUT_US);
if (Build.VERSION.SDK_INT < 21 && decodeInputIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
outputBuffers = decoder.getOutputBuffers();
inputBuffers = decoder.getInputBuffers();
} else if (decodeInputIndex >= 0) {
long sampleTimeUs = extractor.getSampleTime();
if (sampleTimeUs == -1) {
eof = true;
} else if (endTimeUs != null && sampleTimeUs > endTimeUs) {
eof = true;
}
if (eof) {
decodeInputDone = true;
decoder.queueInputBuffer(decodeInputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
} else {
info.size = extractor.readSampleData(buffer, 0);
info.presentationTimeUs = sampleTimeUs;
info.flags = extractor.getSampleFlags();
ByteBuffer inputBuffer = null;
if (android.os.Build.VERSION.SDK_INT >= 21) {
inputBuffer = decoder.getInputBuffer(decodeInputIndex);
} else {
inputBuffer = inputBuffers[decodeInputIndex];
}
inputBuffer.put(buffer);
MLog.i(TAG, "audio decode queueInputBuffer " + info.presentationTimeUs / 1000);
decoder.queueInputBuffer(decodeInputIndex, 0, info.size, info.presentationTimeUs, info.flags);
extractor.advance();
}
}
}
while (!decodeDone) {
int outputBufferIndex = decoder.dequeueOutputBuffer(info, TIMEOUT_US);
if (outputBufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {
break;
} else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat newFormat = decoder.getOutputFormat();
MLog.i(TAG, "audio decode newFormat = " + newFormat);
} else if (outputBufferIndex < 0) {
//ignore
MLog.e(TAG, "unexpected result from audio decoder.dequeueOutputBuffer: " + outputBufferIndex);
} else {
if (info.flags == MediaCodec.BUFFER_FLAG_END_OF_STREAM) {
decodeDone = true;
} else {
ByteBuffer decodeOutputBuffer = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
decodeOutputBuffer = decoder.getOutputBuffer(outputBufferIndex);
} else {
decodeOutputBuffer = outputBuffers[outputBufferIndex];
}
MLog.i(TAG, "audio decode saveFrame " + info.presentationTimeUs / 1000);
writeChannel.write(decodeOutputBuffer);
}
decoder.releaseOutputBuffer(outputBufferIndex, false);
}
}
}
} finally {
writeChannel.close();
extractor.release();
decoder.stop();
decoder.release();
}
}
/**
* 需要改变音频速率的情况下，需要先解码->改变速率->编码
*/
public static void decodeToPCM(VideoProcessor.MediaSource audioSource, String outPath, Integer startTimeUs, Integer endTimeUs) throws IOException {
MediaExtractor extractor = new MediaExtractor();
audioSource.setDataSource(extractor);
int audioTrack = VideoUtil.selectTrack(extractor, true);
extractor.selectTrack(audioTrack);
if (startTimeUs == null) {
startTimeUs = 0;
}
extractor.seekTo(startTimeUs, MediaExtractor.SEEK_TO_CLOSEST_SYNC);
MediaFormat oriAudioFormat = extractor.getTrackFormat(audioTrack);
int maxBufferSize;
if (oriAudioFormat.containsKey(MediaFormat.KEY_MAX_INPUT_SIZE)) {
maxBufferSize = oriAudioFormat.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE);
} else {
maxBufferSize = 100 * 1000;
}
ByteBuffer buffer = ByteBuffer.allocateDirect(maxBufferSize);
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
//调整音频速率需要重解码音频帧
MediaCodec decoder = MediaCodec.createDecoderByType(oriAudioFormat.getString(MediaFormat.KEY_MIME));
decoder.configure(oriAudioFormat, null, null, 0);
decoder.start();
boolean decodeDone = false;
boolean decodeInputDone = false;
final int TIMEOUT_US = 2500;
File pcmFile = new File(outPath);
FileChannel writeChannel = new FileOutputStream(pcmFile).getChannel();
try {
while (!decodeDone) {
if (!decodeInputDone) {
boolean eof = false;
int decodeInputIndex = decoder.dequeueInputBuffer(TIMEOUT_US);
if (decodeInputIndex >= 0) {
long sampleTimeUs = extractor.getSampleTime();
if (sampleTimeUs == -1) {
eof = true;
} else if (sampleTimeUs < startTimeUs) {
extractor.advance();
continue;
} else if (endTimeUs != null && sampleTimeUs > endTimeUs) {
eof = true;
}
if (eof) {
decodeInputDone = true;
decoder.queueInputBuffer(decodeInputIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
} else {
info.size = extractor.readSampleData(buffer, 0);
info.presentationTimeUs = sampleTimeUs;
info.flags = extractor.getSampleFlags();
ByteBuffer inputBuffer = decoder.getInputBuffer(decodeInputIndex);
inputBuffer.put(buffer);
CL.it(TAG, "audio decode queueInputBuffer " + info.presentationTimeUs / 1000);
decoder.queueInputBuffer(decodeInputIndex, 0, info.size, info.presentationTimeUs, info.flags);
extractor.advance();
}
}
}
while (!decodeDone) {
int outputBufferIndex = decoder.dequeueOutputBuffer(info, TIMEOUT_US);
if (outputBufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {
break;
} else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat newFormat = decoder.getOutputFormat();
CL.it(TAG, "audio decode newFormat = " + newFormat);
} else if (outputBufferIndex < 0) {
//ignore
CL.et(TAG, "unexpected result from audio decoder.dequeueOutputBuffer: " + outputBufferIndex);
} else {
if (info.flags == MediaCodec.BUFFER_FLAG_END_OF_STREAM) {
decodeDone = true;
} else {
ByteBuffer decodeOutputBuffer = decoder.getOutputBuffer(outputBufferIndex);
CL.it(TAG, "audio decode saveFrame " + info.presentationTimeUs / 1000);
writeChannel.write(decodeOutputBuffer);
}
decoder.releaseOutputBuffer(outputBufferIndex, false);
}
}
}
} finally {
writeChannel.close();
extractor.release();
decoder.stop();
decoder.release();
}
}
private static void renderHevcImage(ByteBuffer bitstream, ImageInfo info, Surface surface) {
long beginTime = SystemClock.elapsedRealtimeNanos();
// configure HEVC decoder
MediaCodec decoder = configureDecoder(info, bitstream.limit(), surface);
MediaFormat outputFormat = decoder.getOutputFormat();
Log.d(TAG, "HEVC output-format=" + outputFormat);
decoder.start();
try {
// set bitstream to decoder
int inputBufferId = decoder.dequeueInputBuffer(-1);
if (inputBufferId < 0) {
throw new IllegalStateException("dequeueInputBuffer return " + inputBufferId);
}
ByteBuffer inBuffer = decoder.getInputBuffer(inputBufferId);
inBuffer.put(bitstream);
decoder.queueInputBuffer(inputBufferId, 0, bitstream.limit(), 0, 0);
// notify end of stream
inputBufferId = decoder.dequeueInputBuffer(-1);
if (inputBufferId < 0) {
throw new IllegalStateException("dequeueInputBuffer return " + inputBufferId);
}
decoder.queueInputBuffer(inputBufferId, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
// get decoded image
MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
while (true) {
int outputBufferId = decoder.dequeueOutputBuffer(bufferInfo, -1);
if (outputBufferId >= 0) {
decoder.releaseOutputBuffer(outputBufferId, true);
break;
} else if (outputBufferId == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
outputFormat = decoder.getOutputFormat();
Log.d(TAG, "HEVC output-format=" + outputFormat);
} else {
Log.d(TAG, "HEVC dequeueOutputBuffer return " + outputBufferId);
}
}
decoder.flush();
} finally {
decoder.stop();
decoder.release();
}
long endTime = SystemClock.elapsedRealtimeNanos();
Log.i(TAG, "HEVC decoding elapsed=" + (endTime - beginTime) / 1000000.f + "[msec]");
}
/**
* Generates video frames, feeds them into the encoder, and writes the output to the
* VideoChunks instance.
*/
private void generateVideoData(MediaCodec encoder, InputSurface inputSurface,
VideoChunks output) {
final int TIMEOUT_USEC = 10000;
ByteBuffer[] encoderOutputBuffers = encoder.getOutputBuffers();
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
int generateIndex = 0;
int outputCount = 0;
// Loop until the output side is done.
boolean inputDone = false;
boolean outputDone = false;
while (!outputDone) {
if (VERBOSE) Log.d(TAG, "gen loop");
// If we're not done submitting frames, generate a new one and submit it. The
// eglSwapBuffers call will block if the input is full.
if (!inputDone) {
if (generateIndex == NUM_FRAMES) {
// Send an empty frame with the end-of-stream flag set.
if (VERBOSE) Log.d(TAG, "signaling input EOS");
if (WORK_AROUND_BUGS) {
// Might drop a frame, but at least we won't crash mediaserver.
try { Thread.sleep(500); } catch (InterruptedException ie) {}
outputDone = true;
} else {
encoder.signalEndOfInputStream();
}
inputDone = true;
} else {
generateSurfaceFrame(generateIndex);
inputSurface.setPresentationTime(computePresentationTime(generateIndex) * 1000);
if (VERBOSE) Log.d(TAG, "inputSurface swapBuffers");
inputSurface.swapBuffers();
}
generateIndex++;
}
// Check for output from the encoder. If there's no output yet, we either need to
// provide more input, or we need to wait for the encoder to work its magic. We
// can't actually tell which is the case, so if we can't get an output buffer right
// away we loop around and see if it wants more input.
//
// If we do find output, drain it all before supplying more input.
while (true) {
int encoderStatus = encoder.dequeueOutputBuffer(info, TIMEOUT_USEC);
if (encoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
// no output available yet
if (VERBOSE) Log.d(TAG, "no output from encoder available");
break; // out of while
} else if (encoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
// not expected for an encoder
encoderOutputBuffers = encoder.getOutputBuffers();
if (VERBOSE) Log.d(TAG, "encoder output buffers changed");
} else if (encoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
// not expected for an encoder
MediaFormat newFormat = encoder.getOutputFormat();
if (VERBOSE) Log.d(TAG, "encoder output format changed: " + newFormat);
} else if (encoderStatus < 0) {
fail("unexpected result from encoder.dequeueOutputBuffer: " + encoderStatus);
} else { // encoderStatus >= 0
ByteBuffer encodedData = encoderOutputBuffers[encoderStatus];
if (encodedData == null) {
fail("encoderOutputBuffer " + encoderStatus + " was null");
}
// Codec config flag must be set iff this is the first chunk of output. This
// may not hold for all codecs, but it appears to be the case for video/avc.
assertTrue((info.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0 ||
outputCount != 0);
if (info.size != 0) {
// Adjust the ByteBuffer values to match BufferInfo.
encodedData.position(info.offset);
encodedData.limit(info.offset + info.size);
output.addChunk(encodedData, info.flags, info.presentationTimeUs);
outputCount++;
}
encoder.releaseOutputBuffer(encoderStatus, false);
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
outputDone = true;
break; // out of while
}
}
}
}
// One chunk per frame, plus one for the config data.
assertEquals("Frame count", NUM_FRAMES + 1, outputCount);
}
/**
* Checks the video data.
*
* @return the number of bad frames
*/
private int checkVideoData(VideoChunks inputData, MediaCodec decoder, OutputSurface surface) {
final int TIMEOUT_USEC = 1000;
ByteBuffer[] decoderInputBuffers = decoder.getInputBuffers();
ByteBuffer[] decoderOutputBuffers = decoder.getOutputBuffers();
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
int inputChunk = 0;
int checkIndex = 0;
int badFrames = 0;
boolean outputDone = false;
boolean inputDone = false;
while (!outputDone) {
if (VERBOSE) Log.d(TAG, "check loop");
// Feed more data to the decoder.
if (!inputDone) {
int inputBufIndex = decoder.dequeueInputBuffer(TIMEOUT_USEC);
if (inputBufIndex >= 0) {
if (inputChunk == inputData.getNumChunks()) {
// End of stream -- send empty frame with EOS flag set.
decoder.queueInputBuffer(inputBufIndex, 0, 0, 0L,
MediaCodec.BUFFER_FLAG_END_OF_STREAM);
inputDone = true;
if (VERBOSE) Log.d(TAG, "sent input EOS");
} else {
// Copy a chunk of input to the decoder. The first chunk should have
// the BUFFER_FLAG_CODEC_CONFIG flag set.
ByteBuffer inputBuf = decoderInputBuffers[inputBufIndex];
inputBuf.clear();
inputData.getChunkData(inputChunk, inputBuf);
int flags = inputData.getChunkFlags(inputChunk);
long time = inputData.getChunkTime(inputChunk);
decoder.queueInputBuffer(inputBufIndex, 0, inputBuf.position(),
time, flags);
if (VERBOSE) {
Log.d(TAG, "submitted frame " + inputChunk + " to dec, size=" +
inputBuf.position() + " flags=" + flags);
}
inputChunk++;
}
} else {
if (VERBOSE) Log.d(TAG, "input buffer not available");
}
}
if (!outputDone) {
int decoderStatus = decoder.dequeueOutputBuffer(info, TIMEOUT_USEC);
if (decoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
// no output available yet
if (VERBOSE) Log.d(TAG, "no output from decoder available");
} else if (decoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
decoderOutputBuffers = decoder.getOutputBuffers();
if (VERBOSE) Log.d(TAG, "decoder output buffers changed");
} else if (decoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat newFormat = decoder.getOutputFormat();
if (VERBOSE) Log.d(TAG, "decoder output format changed: " + newFormat);
} else if (decoderStatus < 0) {
fail("unexpected result from decoder.dequeueOutputBuffer: " + decoderStatus);
} else { // decoderStatus >= 0
ByteBuffer decodedData = decoderOutputBuffers[decoderStatus];
if (VERBOSE) Log.d(TAG, "surface decoder given buffer " + decoderStatus +
" (size=" + info.size + ")");
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
if (VERBOSE) Log.d(TAG, "output EOS");
outputDone = true;
}
boolean doRender = (info.size != 0);
// As soon as we call releaseOutputBuffer, the buffer will be forwarded
// to SurfaceTexture to convert to a texture. The API doesn't guarantee
// that the texture will be available before the call returns, so we
// need to wait for the onFrameAvailable callback to fire.
decoder.releaseOutputBuffer(decoderStatus, doRender);
if (doRender) {
if (VERBOSE) Log.d(TAG, "awaiting frame " + checkIndex);
assertEquals("Wrong time stamp", computePresentationTime(checkIndex),
info.presentationTimeUs);
surface.awaitNewImage();
surface.drawImage();
if (!checkSurfaceFrame(checkIndex++)) {
badFrames++;
}
}
}
}
}
return badFrames;
}
/**
* Work loop.
*/
static void doExtract(MediaExtractor extractor, int trackIndex, MediaCodec decoder,
CodecOutputSurface outputSurface) throws IOException {
final int TIMEOUT_USEC = 10000;
ByteBuffer[] decoderInputBuffers = decoder.getInputBuffers();
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
int inputChunk = 0;
int decodeCount = 0;
long frameSaveTime = 0;
boolean outputDone = false;
boolean inputDone = false;
while (!outputDone) {
if (VERBOSE) Log.d(TAG, "loop");
// Feed more data to the decoder.
if (!inputDone) {
int inputBufIndex = decoder.dequeueInputBuffer(TIMEOUT_USEC);
if (inputBufIndex >= 0) {
ByteBuffer inputBuf = decoderInputBuffers[inputBufIndex];
// Read the sample data into the ByteBuffer. This neither respects nor
// updates inputBuf's position, limit, etc.
int chunkSize = extractor.readSampleData(inputBuf, 0);
if (chunkSize < 0) {
// End of stream -- send empty frame with EOS flag set.
decoder.queueInputBuffer(inputBufIndex, 0, 0, 0L,
MediaCodec.BUFFER_FLAG_END_OF_STREAM);
inputDone = true;
if (VERBOSE) Log.d(TAG, "sent input EOS");
} else {
if (extractor.getSampleTrackIndex() != trackIndex) {
Log.w(TAG, "WEIRD: got sample from track " +
extractor.getSampleTrackIndex() + ", expected " + trackIndex);
}
long presentationTimeUs = extractor.getSampleTime();
decoder.queueInputBuffer(inputBufIndex, 0, chunkSize,
presentationTimeUs, 0 /*flags*/);
if (VERBOSE) {
Log.d(TAG, "submitted frame " + inputChunk + " to dec, size=" +
chunkSize);
}
inputChunk++;
extractor.advance();
}
} else {
if (VERBOSE) Log.d(TAG, "input buffer not available");
}
}
if (!outputDone) {
int decoderStatus = decoder.dequeueOutputBuffer(info, TIMEOUT_USEC);
if (decoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
// no output available yet
if (VERBOSE) Log.d(TAG, "no output from decoder available");
} else if (decoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
// not important for us, since we're using Surface
if (VERBOSE) Log.d(TAG, "decoder output buffers changed");
} else if (decoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat newFormat = decoder.getOutputFormat();
if (VERBOSE) Log.d(TAG, "decoder output format changed: " + newFormat);
} else if (decoderStatus < 0) {
fail("unexpected result from decoder.dequeueOutputBuffer: " + decoderStatus);
} else { // decoderStatus >= 0
if (VERBOSE) Log.d(TAG, "surface decoder given buffer " + decoderStatus +
" (size=" + info.size + ")");
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
if (VERBOSE) Log.d(TAG, "output EOS");
outputDone = true;
}
boolean doRender = (info.size != 0);
// As soon as we call releaseOutputBuffer, the buffer will be forwarded
// to SurfaceTexture to convert to a texture. The API doesn't guarantee
// that the texture will be available before the call returns, so we
// need to wait for the onFrameAvailable callback to fire.
decoder.releaseOutputBuffer(decoderStatus, doRender);
if (doRender) {
if (VERBOSE) Log.d(TAG, "awaiting decode of frame " + decodeCount);
outputSurface.awaitNewImage();
outputSurface.drawImage(true);
if (decodeCount < MAX_FRAMES) {
File outputFile = new File(FILES_DIR,
String.format("frame-%02d.png", decodeCount));
long startWhen = System.nanoTime();
outputSurface.saveFrame(outputFile.toString());
frameSaveTime += System.nanoTime() - startWhen;
}
decodeCount++;
}
}
}
}
int numSaved = (MAX_FRAMES < decodeCount) ? MAX_FRAMES : decodeCount;
Log.d(TAG, "Saving " + numSaved + " frames took " +
(frameSaveTime / numSaved / 1000) + " us per frame");
}
/**
* Work loop.
*/
static void doExtract(MediaExtractor extractor, int trackIndex, MediaCodec decoder,
CodecOutputSurface outputSurface) throws IOException {
final int TIMEOUT_USEC = 10000;
ByteBuffer[] decoderInputBuffers = decoder.getInputBuffers();
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
int inputChunk = 0;
int decodeCount = 0;
long frameSaveTime = 0;
boolean outputDone = false;
boolean inputDone = false;
while (!outputDone) {
if (VERBOSE) Log.d(TAG, "loop");
// Feed more data to the decoder.
if (!inputDone) {
int inputBufIndex = decoder.dequeueInputBuffer(TIMEOUT_USEC);
if (inputBufIndex >= 0) {
ByteBuffer inputBuf = decoderInputBuffers[inputBufIndex];
// Read the sample data into the ByteBuffer. This neither respects nor
// updates inputBuf's position, limit, etc.
int chunkSize = extractor.readSampleData(inputBuf, 0);
if (chunkSize < 0) {
// End of stream -- send empty frame with EOS flag set.
decoder.queueInputBuffer(inputBufIndex, 0, 0, 0L,
MediaCodec.BUFFER_FLAG_END_OF_STREAM);
inputDone = true;
if (VERBOSE) Log.d(TAG, "sent input EOS");
} else {
if (extractor.getSampleTrackIndex() != trackIndex) {
Log.w(TAG, "WEIRD: got sample from track " +
extractor.getSampleTrackIndex() + ", expected " + trackIndex);
}
long presentationTimeUs = extractor.getSampleTime();
decoder.queueInputBuffer(inputBufIndex, 0, chunkSize,
presentationTimeUs, 0 /*flags*/);
if (VERBOSE) {
Log.d(TAG, "submitted frame " + inputChunk + " to dec, size=" +
chunkSize);
}
inputChunk++;
extractor.advance();
}
} else {
if (VERBOSE) Log.d(TAG, "input buffer not available");
}
}
if (!outputDone) {
int decoderStatus = decoder.dequeueOutputBuffer(info, TIMEOUT_USEC);
if (decoderStatus == MediaCodec.INFO_TRY_AGAIN_LATER) {
// no output available yet
if (VERBOSE) Log.d(TAG, "no output from decoder available");
} else if (decoderStatus == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
// not important for us, since we're using Surface
if (VERBOSE) Log.d(TAG, "decoder output buffers changed");
} else if (decoderStatus == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat newFormat = decoder.getOutputFormat();
if (VERBOSE) Log.d(TAG, "decoder output format changed: " + newFormat);
} else if (decoderStatus < 0) {
fail("unexpected result from decoder.dequeueOutputBuffer: " + decoderStatus);
} else { // decoderStatus >= 0
if (VERBOSE) Log.d(TAG, "surface decoder given buffer " + decoderStatus +
" (size=" + info.size + ")");
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
if (VERBOSE) Log.d(TAG, "output EOS");
outputDone = true;
}
boolean doRender = (info.size != 0);
// As soon as we call releaseOutputBuffer, the buffer will be forwarded
// to SurfaceTexture to convert to a texture. The API doesn't guarantee
// that the texture will be available before the call returns, so we
// need to wait for the onFrameAvailable callback to fire.
decoder.releaseOutputBuffer(decoderStatus, doRender);
if (doRender) {
if (VERBOSE) Log.d(TAG, "awaiting decode of frame " + decodeCount);
outputSurface.awaitNewImage();
outputSurface.drawImage(true);
if (decodeCount < MAX_FRAMES) {
File outputFile = new File(FILES_DIR,
String.format("frame-%02d.png", decodeCount));
long startWhen = System.nanoTime();
outputSurface.saveFrame(outputFile.toString());
frameSaveTime += System.nanoTime() - startWhen;
}
decodeCount++;
}
}
}
}
int numSaved = (MAX_FRAMES < decodeCount) ? MAX_FRAMES : decodeCount;
Log.d(TAG, "Saving " + numSaved + " frames took " +
(frameSaveTime / numSaved / 1000) + " us per frame");
}
/**
* 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();
}
}
/**
* 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();
}
}
/**
* 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 int recorderEncoderLoop(MediaCodec codec, SpeechRecord speechRecord) {
int status = -1;
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 numDequeueOutputBufferTimeout = 0;
int index;
while (true) {
if (!doneSubmittingInput) {
index = codec.dequeueInputBuffer(DEQUEUE_INPUT_BUFFER_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_OUTPUT_BUFFER_TIMEOUT);
Log.i("enc: out: flags/index: " + info.flags + "/" + index);
if (index == MediaCodec.INFO_TRY_AGAIN_LATER) {
numDequeueOutputBufferTimeout++;
Log.i("enc: out: INFO_TRY_AGAIN_LATER: " + numDequeueOutputBufferTimeout);
if (numDequeueOutputBufferTimeout > 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;
numDequeueOutputBufferTimeout = 0;
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
Log.i("enc: out: EOS");
status = 0;
break;
}
}
}
codec.stop();
codec.release();
Log.i("stopped and released codec");
}
return status;
}
private void stream(MediaCodec codec) {
BufferInfo info = new BufferInfo();
ByteBuffer[] buffers = null;
while (!mQuitting) {
int index = codec.dequeueOutputBuffer(info, TIMEOUT_USEC);
if (index >= 0) {
if (buffers == null) {
buffers = codec.getOutputBuffers();
}
ByteBuffer buffer = buffers[index];
buffer.limit(info.offset + info.size);
buffer.position(info.offset);
muxer.writeSampleData(videoTrackIndex, buffer, info);
codec.releaseOutputBuffer(index, false);
} else if (index == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
if (mMuxerStarted) {
throw new RuntimeException("format changed twice");
}
MediaFormat newFormat = codec.getOutputFormat();
// now that we have the Magic Goodies, start the muxer
videoTrackIndex = muxer.addTrack(newFormat);
muxer.start();
mMuxerStarted = true;
buffers = null;
} else if (index == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
buffers = null;
} else if (index == MediaCodec.INFO_TRY_AGAIN_LATER) {
Log.e("sam", "Codec dequeue buffer timed out.");
}
}
muxer.stop();
muxer.release();
}