status_t AACDecoder::read(
MediaBuffer **out, const ReadOptions *options) {
/*
** end of aac audio stream in the case of initCheck is not OK,
** avoid abnormal playing later. @Jun 16, 2011. by hbb
*/
if(mInitCheck != OK) {
ALOGE("mInitCheck is not OK, so end aac audio stream");
return ERROR_END_OF_STREAM;
}
status_t err;
*out = NULL;
int64_t seekTimeUs;
ReadOptions::SeekMode mode;
if (options && options->getSeekTo(&seekTimeUs, &mode)) {
CHECK(seekTimeUs >= 0);
mNumSamplesOutput = 0;
if (mInputBuffer) {
mInputBuffer->release();
mInputBuffer = NULL;
}
// Make sure that the next buffer output does not still
// depend on fragments from the last one decoded.
PVMP4AudioDecoderResetBuffer(mDecoderBuf);
} else {
seekTimeUs = -1;
}
repeat:
if (mInputBuffer == NULL) {
err = mSource->read(&mInputBuffer, options);
if (err != OK) {
return err;
}
int64_t timeUs;
if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
if(mAnchorTimeUs != timeUs)
{
mAnchorTimeUs = timeUs;
mNumSamplesOutput = 0;
}
} else {
// We must have a new timestamp after seeking.
CHECK(seekTimeUs < 0);
}
}
MediaBuffer *buffer;
CHECK_EQ(mBufferGroup->acquire_buffer(&buffer), OK);
mConfig->pInputBuffer =
(UChar *)mInputBuffer->data() + mInputBuffer->range_offset();
mConfig->inputBufferCurrentLength = mInputBuffer->range_length();
mConfig->inputBufferMaxLength = 0;
mConfig->inputBufferUsedLength = 0;
mConfig->remainderBits = 0;
mConfig->pOutputBuffer = static_cast<Int16 *>(buffer->data());
mConfig->pOutputBuffer_plus = &mConfig->pOutputBuffer[2048];
#if WRITE_FILE
if(aacFp)
fwrite(mConfig->pInputBuffer,1, mConfig->inputBufferCurrentLength,aacFp);
#endif
//ALOGE("inputlen %d input[0] = %x input[1]%x", mConfig->inputBufferCurrentLength,(mConfig->pInputBuffer)[0],(mConfig->pInputBuffer)[1]);
Int decoderErr = MP4AUDEC_SUCCESS;
if(mConfig->isMutilChannle)
{
decoderErr = PVMP4AudioDecodeFrameSixChannel(mConfig, mDecoderBuf);
}
else
{
decoderErr = PVMP4AudioDecodeFrame(mConfig, mDecoderBuf);
}
if (mInputBuffer != NULL) {
mInputBuffer->set_range(
mInputBuffer->range_offset() + mConfig->inputBufferUsedLength,
mInputBuffer->range_length() - mConfig->inputBufferUsedLength);
if (mInputBuffer->range_length() <= 3) {
mInputBuffer->release();
mInputBuffer = NULL;
}
}
//if the input data no enough,will drop this frame inputdata. get the next frame data.
if(decoderErr != MP4AUDEC_SUCCESS)
{
if(mInputBuffer)
{
mInputBuffer->release();
mInputBuffer = NULL;
}
if(buffer)
{
buffer->release();
buffer = NULL;
}
goto repeat;
}
/*
* AAC+/eAAC+ streams can be signalled in two ways: either explicitly
* or implicitly, according to MPEG4 spec. AAC+/eAAC+ is a dual
* rate system and the sampling rate in the final output is actually
* doubled compared with the core AAC decoder sampling rate.
*
* Explicit signalling is done by explicitly defining SBR audio object
* type in the bitstream. Implicit signalling is done by embedding
* SBR content in AAC extension payload specific to SBR, and hence
* requires an AAC decoder to perform pre-checks on actual audio frames.
*
* Thus, we could not say for sure whether a stream is
* AAC+/eAAC+ until the first data frame is decoded.
*/
if (++mNumDecodedBuffers <= 2) {
ALOGV("audio/extended audio object type: %d + %d",
mConfig->audioObjectType, mConfig->extendedAudioObjectType);
ALOGV("aac+ upsampling factor: %d desired channels: %d",
mConfig->aacPlusUpsamplingFactor, mConfig->desiredChannels);
CHECK(mNumDecodedBuffers > 0);
if (mNumDecodedBuffers == 1) {
mUpsamplingFactor = mConfig->aacPlusUpsamplingFactor;
// Check on the sampling rate to see whether it is changed.
int32_t sampleRate;
CHECK(mMeta->findInt32(kKeySampleRate, &sampleRate));
ALOGV("--->aac samplerae %d",sampleRate);
if (mConfig->samplingRate != sampleRate) {
mMeta->setInt32(kKeySampleRate, mConfig->samplingRate);
ALOGV("Sample rate was %d Hz, but now is %d Hz",
sampleRate, mConfig->samplingRate);
buffer->release();
// mInputBuffer->release();
// mInputBuffer = NULL;
return INFO_FORMAT_CHANGED;
}
} else { // mNumDecodedBuffers == 2
if (mConfig->extendedAudioObjectType == MP4AUDIO_AAC_LC ||
mConfig->extendedAudioObjectType == MP4AUDIO_LTP) {
if (mUpsamplingFactor == 2) {
// The stream turns out to be not aacPlus mode anyway
ALOGV("Disable AAC+/eAAC+ since extended audio object type is %d",
mConfig->extendedAudioObjectType);
mConfig->aacPlusEnabled = 0;
}
} else {
if (mUpsamplingFactor == 1) {
// aacPlus mode does not buy us anything, but to cause
// 1. CPU load to increase, and
// 2. a half speed of decoding
ALOGV("Disable AAC+/eAAC+ since upsampling factor is 1");
mConfig->aacPlusEnabled = 0;
}
}
}
}
size_t numOutBytes =
mConfig->frameLength * sizeof(int16_t) * mConfig->desiredChannels;
if (mUpsamplingFactor == 2) {
if (mConfig->desiredChannels == 1) {
memcpy(&mConfig->pOutputBuffer[1024], &mConfig->pOutputBuffer[2048], numOutBytes * 2);
}
numOutBytes *= 2;
}
if (decoderErr != MP4AUDEC_SUCCESS) {
ALOGW("AAC decoder returned error %d, substituting silence", decoderErr);
memset(buffer->data(), 0, numOutBytes);
// Discard input buffer.
if(mInputBuffer)
{
mInputBuffer->release();
mInputBuffer = NULL;
}
// fall through
}
buffer->set_range(0, numOutBytes);
buffer->meta_data()->setInt64(
kKeyTime,
mAnchorTimeUs
+ (mNumSamplesOutput * 1000000) / mConfig->samplingRate);
mNumSamplesOutput += mConfig->frameLength;
*out = buffer;
return OK;
}
status_t WAVEWriter::threadFunc() {
mEstimatedDurationUs = 0;
mEstimatedSizeBytes = 0;
bool stoppedPrematurely = true;
int64_t previousPausedDurationUs = 0;
int64_t maxTimestampUs = 0;
status_t err = OK;
prctl(PR_SET_NAME, (unsigned long)"WAVEWriter", 0, 0, 0);
hdr.data_sz = 0;
while (!mDone) {
MediaBuffer *buffer;
err = mSource->read(&buffer);
if (err != OK) {
break;
}
if (mPaused) {
buffer->release();
buffer = NULL;
continue;
}
mEstimatedSizeBytes += buffer->range_length();
if (exceedsFileSizeLimit()) {
buffer->release();
buffer = NULL;
notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED, 0);
break;
}
int64_t timestampUs;
CHECK(buffer->meta_data()->findInt64(kKeyTime, ×tampUs));
if (timestampUs > mEstimatedDurationUs) {
mEstimatedDurationUs = timestampUs;
}
if (mResumed) {
previousPausedDurationUs += (timestampUs - maxTimestampUs - 20000);
mResumed = false;
}
timestampUs -= previousPausedDurationUs;
ALOGV("time stamp: %lld, previous paused duration: %lld",
timestampUs, previousPausedDurationUs);
if (timestampUs > maxTimestampUs) {
maxTimestampUs = timestampUs;
}
if (exceedsFileDurationLimit()) {
buffer->release();
buffer = NULL;
notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_DURATION_REACHED, 0);
break;
}
ssize_t n = write(mFd,
(const uint8_t *)buffer->data() + buffer->range_offset(),
buffer->range_length());
hdr.data_sz += (ssize_t)buffer->range_length();
hdr.riff_sz = hdr.data_sz + 44 - 8;
if (n < (ssize_t)buffer->range_length()) {
buffer->release();
buffer = NULL;
break;
}
if (stoppedPrematurely) {
stoppedPrematurely = false;
}
buffer->release();
buffer = NULL;
}
if (stoppedPrematurely) {
notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_TRACK_INFO_COMPLETION_STATUS, UNKNOWN_ERROR);
}
lseek(mFd, 0, SEEK_SET);
write(mFd, &hdr, sizeof(hdr));
lseek(mFd, 0, SEEK_END);
close(mFd);
mFd = -1;
mReachedEOS = true;
if (err == ERROR_END_OF_STREAM) {
return OK;
}
return err;
}
status_t MyVorbisExtractor::readNextPacket(MediaBuffer **out) {
*out = NULL;
MediaBuffer *buffer = NULL;
int64_t timeUs = -1;
for (;;) {
size_t i;
size_t packetSize = 0;
bool gotFullPacket = false;
for (i = mNextLaceIndex; i < mCurrentPage.mNumSegments; ++i) {
uint8_t lace = mCurrentPage.mLace[i];
packetSize += lace;
if (lace < 255) {
gotFullPacket = true;
++i;
break;
}
}
if (mNextLaceIndex < mCurrentPage.mNumSegments) {
off_t dataOffset = mOffset + 27 + mCurrentPage.mNumSegments;
for (size_t j = 0; j < mNextLaceIndex; ++j) {
dataOffset += mCurrentPage.mLace[j];
}
size_t fullSize = packetSize;
if (buffer != NULL) {
fullSize += buffer->range_length();
}
MediaBuffer *tmp = new MediaBuffer(fullSize);
if (buffer != NULL) {
memcpy(tmp->data(), buffer->data(), buffer->range_length());
tmp->set_range(0, buffer->range_length());
buffer->release();
} else {
// XXX Not only is this not technically the correct time for
// this packet, we also stamp every packet in this page
// with the same time. This needs fixing later.
if (mVi.rate) {
// Rate may not have been initialized yet if we're currently
// reading the configuration packets...
// Fortunately, the timestamp doesn't matter for those.
timeUs = mCurrentPage.mGranulePosition * 1000000ll / mVi.rate;
}
tmp->set_range(0, 0);
}
buffer = tmp;
ssize_t n = mSource->readAt(
dataOffset,
(uint8_t *)buffer->data() + buffer->range_length(),
packetSize);
if (n < (ssize_t)packetSize) {
LOGV("failed to read %d bytes at 0x%08lx", packetSize, dataOffset);
return ERROR_IO;
}
buffer->set_range(0, fullSize);
mNextLaceIndex = i;
if (gotFullPacket) {
// We've just read the entire packet.
if (timeUs >= 0) {
buffer->meta_data()->setInt64(kKeyTime, timeUs);
}
if (mFirstPacketInPage) {
buffer->meta_data()->setInt32(
kKeyValidSamples, mCurrentPageSamples);
mFirstPacketInPage = false;
}
*out = buffer;
return OK;
}
// fall through, the buffer now contains the start of the packet.
}
CHECK_EQ(mNextLaceIndex, mCurrentPage.mNumSegments);
mOffset += mCurrentPageSize;
ssize_t n = readPage(mOffset, &mCurrentPage);
if (n <= 0) {
if (buffer) {
buffer->release();
buffer = NULL;
}
LOGV("readPage returned %ld", n);
return n < 0 ? n : (status_t)ERROR_END_OF_STREAM;
}
mCurrentPageSamples =
mCurrentPage.mGranulePosition - mPrevGranulePosition;
mFirstPacketInPage = true;
mPrevGranulePosition = mCurrentPage.mGranulePosition;
mCurrentPageSize = n;
mNextLaceIndex = 0;
if (buffer != NULL) {
if ((mCurrentPage.mFlags & 1) == 0) {
// This page does not continue the packet, i.e. the packet
// is already complete.
if (timeUs >= 0) {
buffer->meta_data()->setInt64(kKeyTime, timeUs);
}
buffer->meta_data()->setInt32(
kKeyValidSamples, mCurrentPageSamples);
mFirstPacketInPage = false;
*out = buffer;
return OK;
}
}
}
}
bool OmxDecoder::ReadVideo(VideoFrame *aFrame, int64_t aSeekTimeUs,
BufferCallback *aBufferCallback)
{
MOZ_ASSERT(aSeekTimeUs >= -1);
if (!mVideoSource.get())
return false;
ReleaseVideoBuffer();
status_t err;
if (aSeekTimeUs != -1) {
ReadOptions options;
options.setSeekTo(aSeekTimeUs);
err = mVideoSource->read(&mVideoBuffer, &options);
} else {
err = mVideoSource->read(&mVideoBuffer);
}
aFrame->mSize = 0;
if (err == OK && mVideoBuffer->range_length() > 0) {
int64_t timeUs;
int32_t keyFrame;
if (!mVideoBuffer->meta_data()->findInt64(kKeyTime, &timeUs) ) {
LOG("no frame time");
return false;
}
if (timeUs < 0) {
LOG("frame time %lld must be nonnegative", timeUs);
return false;
}
if (!mVideoBuffer->meta_data()->findInt32(kKeyIsSyncFrame, &keyFrame)) {
keyFrame = 0;
}
char *data = reinterpret_cast<char *>(mVideoBuffer->data()) + mVideoBuffer->range_offset();
size_t length = mVideoBuffer->range_length();
if (!ToVideoFrame(aFrame, timeUs, data, length, keyFrame, aBufferCallback)) {
return false;
}
}
else if (err == INFO_FORMAT_CHANGED) {
// If the format changed, update our cached info.
LOG("mVideoSource INFO_FORMAT_CHANGED");
if (!SetVideoFormat())
return false;
else
return ReadVideo(aFrame, aSeekTimeUs, aBufferCallback);
}
else if (err == ERROR_END_OF_STREAM) {
LOG("mVideoSource END_OF_STREAM");
}
else if (err != OK) {
LOG("mVideoSource ERROR %#x", err);
}
return err == OK;
}
status_t ExtendedWriter::threadFunc() {
mEstimatedDurationUs = 0;
mEstimatedSizeBytes = 0;
bool stoppedPrematurely = true;
int64_t previousPausedDurationUs = 0;
int64_t maxTimestampUs = 0;
status_t err = OK;
pid_t tid = gettid();
androidSetThreadPriority(tid, ANDROID_PRIORITY_AUDIO);
prctl(PR_SET_NAME, (unsigned long)"ExtendedWriter", 0, 0, 0);
while (!mDone) {
MediaBuffer *buffer;
err = mSource->read(&buffer);
if (err != OK) {
break;
}
if (mPaused) {
buffer->release();
buffer = NULL;
continue;
}
mEstimatedSizeBytes += buffer->range_length();
if (exceedsFileSizeLimit()) {
buffer->release();
buffer = NULL;
notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED, 0);
break;
}
int64_t timestampUs;
CHECK(buffer->meta_data()->findInt64(kKeyTime, ×tampUs));
if (timestampUs > mEstimatedDurationUs) {
mEstimatedDurationUs = timestampUs;
}
if (mResumed) {
previousPausedDurationUs += (timestampUs - maxTimestampUs - 20000);
mResumed = false;
}
timestampUs -= previousPausedDurationUs;
if (timestampUs > maxTimestampUs) {
maxTimestampUs = timestampUs;
}
if (exceedsFileDurationLimit()) {
buffer->release();
buffer = NULL;
notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_INFO_MAX_DURATION_REACHED, 0);
break;
}
ssize_t n = fwrite(
(const uint8_t *)buffer->data() + buffer->range_offset(),
1,
buffer->range_length(),
mFile);
mOffset += n;
if (n < (ssize_t)buffer->range_length()) {
buffer->release();
buffer = NULL;
break;
}
// XXX: How to tell it is stopped prematurely?
if (stoppedPrematurely) {
stoppedPrematurely = false;
}
buffer->release();
buffer = NULL;
}
if (stoppedPrematurely) {
notify(MEDIA_RECORDER_EVENT_INFO, MEDIA_RECORDER_TRACK_INFO_COMPLETION_STATUS, UNKNOWN_ERROR);
}
if ( mFormat == AUDIO_FORMAT_QCELP ) {
writeQCPHeader( );
}
else if ( mFormat == AUDIO_FORMAT_EVRC ) {
writeEVRCHeader( );
}
fflush(mFile);
fclose(mFile);
mFile = NULL;
mReachedEOS = true;
if (err == ERROR_END_OF_STREAM || (err == -ETIMEDOUT)) {
return OK;
}
return err;
}
