HRESULT GetSampleFromMFStreamer(/* out */ const vpx_codec_cx_pkt_t *& vpkt)
{
//printf("Get Sample...\n");
IMFSample *videoSample = NULL;
// Initial read results in a null pSample??
CHECK_HR(videoReader->ReadSample(
MF_SOURCE_READER_ANY_STREAM, // Stream index.
0, // Flags.
&streamIndex, // Receives the actual stream index.
&flags, // Receives status flags.
&llVideoTimeStamp, // Receives the time stamp.
&videoSample // Receives the sample or NULL.
), L"Error reading video sample.");
if (!videoSample)
{
printf("Failed to get video sample from MF.\n");
}
else
{
DWORD nCurrBufferCount = 0;
CHECK_HR(videoSample->GetBufferCount(&nCurrBufferCount), L"Failed to get the buffer count from the video sample.\n");
IMFMediaBuffer * pMediaBuffer;
CHECK_HR(videoSample->ConvertToContiguousBuffer(&pMediaBuffer), L"Failed to extract the video sample into a raw buffer.\n");
DWORD nCurrLen = 0;
CHECK_HR(pMediaBuffer->GetCurrentLength(&nCurrLen), L"Failed to get the length of the raw buffer holding the video sample.\n");
byte *imgBuff;
DWORD buffCurrLen = 0;
DWORD buffMaxLen = 0;
pMediaBuffer->Lock(&imgBuff, &buffMaxLen, &buffCurrLen);
/*BYTE *i420 = new BYTE[4608000];
YUY2ToI420(WIDTH, HEIGHT, STRIDE, imgBuff, i420);
vpx_image_t* img = vpx_img_wrap(&_rawImage, VIDEO_INPUT_FORMAT, _vpxConfig.g_w, _vpxConfig.g_h, 1, i420);*/
vpx_image_t* const img = vpx_img_wrap(&_rawImage, VIDEO_INPUT_FORMAT, _vpxConfig.g_w, _vpxConfig.g_h, 1, imgBuff);
const vpx_codec_cx_pkt_t * pkt;
vpx_enc_frame_flags_t flags = 0;
if (vpx_codec_encode(&_vpxCodec, &_rawImage, _sampleCount, 1, flags, VPX_DL_REALTIME)) {
printf("VPX codec failed to encode the frame.\n");
return -1;
}
else {
vpx_codec_iter_t iter = NULL;
while ((pkt = vpx_codec_get_cx_data(&_vpxCodec, &iter))) {
switch (pkt->kind) {
case VPX_CODEC_CX_FRAME_PKT:
vpkt = pkt; // const_cast<vpx_codec_cx_pkt_t **>(&pkt);
break;
default:
break;
}
printf("%s %i\n", pkt->kind == VPX_CODEC_CX_FRAME_PKT && (pkt->data.frame.flags & VPX_FRAME_IS_KEY) ? "K" : ".", pkt->data.frame.sz);
}
}
_sampleCount++;
vpx_img_free(img);
pMediaBuffer->Unlock();
pMediaBuffer->Release();
//delete i420;
videoSample->Release();
return S_OK;
}
}
SINT SoundSourceMediaFoundation::readSampleFrames(
SINT numberOfFrames, CSAMPLE* sampleBuffer) {
SINT numberOfFramesRemaining = numberOfFrames;
CSAMPLE* pSampleBuffer = sampleBuffer;
while (numberOfFramesRemaining > 0) {
SampleBuffer::ReadableChunk readableChunk(
m_sampleBuffer.readFromHead(
frames2samples(numberOfFramesRemaining)));
DEBUG_ASSERT(readableChunk.size()
<= frames2samples(numberOfFramesRemaining));
if (readableChunk.size() > 0) {
DEBUG_ASSERT(m_currentFrameIndex < getMaxFrameIndex());
if (sampleBuffer != nullptr) {
SampleUtil::copy(
pSampleBuffer,
readableChunk.data(),
readableChunk.size());
pSampleBuffer += readableChunk.size();
}
m_currentFrameIndex += samples2frames(readableChunk.size());
numberOfFramesRemaining -= samples2frames(readableChunk.size());
}
if (numberOfFramesRemaining == 0) {
break; // finished reading
}
// No more decoded sample frames available
DEBUG_ASSERT(m_sampleBuffer.isEmpty());
if (m_pSourceReader == nullptr) {
break; // abort if reader is dead
}
DWORD dwFlags = 0;
LONGLONG streamPos = 0;
IMFSample* pSample = nullptr;
HRESULT hrReadSample =
m_pSourceReader->ReadSample(
kStreamIndex, // [in] DWORD dwStreamIndex,
0, // [in] DWORD dwControlFlags,
nullptr, // [out] DWORD *pdwActualStreamIndex,
&dwFlags, // [out] DWORD *pdwStreamFlags,
&streamPos, // [out] LONGLONG *pllTimestamp,
&pSample); // [out] IMFSample **ppSample
if (FAILED(hrReadSample)) {
qWarning() << kLogPreamble
<< "IMFSourceReader::ReadSample() failed"
<< hrReadSample
<< "-> abort decoding";
DEBUG_ASSERT(pSample == nullptr);
break; // abort
}
if (dwFlags & MF_SOURCE_READERF_ERROR) {
qWarning() << kLogPreamble
<< "IMFSourceReader::ReadSample()"
<< "detected stream errors"
<< "(MF_SOURCE_READERF_ERROR)"
<< "-> abort and stop decoding";
DEBUG_ASSERT(pSample == nullptr);
safeRelease(&m_pSourceReader); // kill the reader
break; // abort
} else if (dwFlags & MF_SOURCE_READERF_ENDOFSTREAM) {
DEBUG_ASSERT(pSample == nullptr);
break; // finished reading
} else if (dwFlags & MF_SOURCE_READERF_CURRENTMEDIATYPECHANGED) {
qWarning() << kLogPreamble
<< "IMFSourceReader::ReadSample()"
<< "detected that the media type has changed"
<< "(MF_SOURCE_READERF_CURRENTMEDIATYPECHANGED)"
<< "-> abort decoding";
DEBUG_ASSERT(pSample == nullptr);
break; // abort
}
DEBUG_ASSERT(pSample != nullptr);
SINT readerFrameIndex = m_streamUnitConverter.toFrameIndex(streamPos);
DEBUG_ASSERT(
(m_currentFrameIndex == getMaxFrameIndex()) || // unknown position after seeking
(m_currentFrameIndex == readerFrameIndex));
m_currentFrameIndex = readerFrameIndex;
DWORD dwSampleBufferCount = 0;
HRESULT hrGetBufferCount =
pSample->GetBufferCount(&dwSampleBufferCount);
if (FAILED(hrGetBufferCount)) {
qWarning() << kLogPreamble
<< "IMFSample::GetBufferCount() failed"
<< hrGetBufferCount
<< "-> abort decoding";
safeRelease(&pSample);
break; // abort
}
DWORD dwSampleTotalLengthInBytes = 0;
HRESULT hrGetTotalLength = pSample->GetTotalLength(&dwSampleTotalLengthInBytes);
if (FAILED(hrGetTotalLength)) {
qWarning() << kLogPreamble
<< "IMFSample::GetTotalLength() failed"
<< hrGetTotalLength
<< "-> abort decoding";
safeRelease(&pSample);
break; // abort
}
// Enlarge temporary buffer (if necessary)
DEBUG_ASSERT((dwSampleTotalLengthInBytes % kBytesPerSample) == 0);
SINT numberOfSamplesToBuffer =
dwSampleTotalLengthInBytes / kBytesPerSample;
SINT sampleBufferCapacity = m_sampleBuffer.getCapacity();
DEBUG_ASSERT(sampleBufferCapacity > 0);
while (sampleBufferCapacity < numberOfSamplesToBuffer) {
sampleBufferCapacity *= 2;
}
if (m_sampleBuffer.getCapacity() < sampleBufferCapacity) {
qDebug() << kLogPreamble
<< "Enlarging sample buffer capacity"
<< m_sampleBuffer.getCapacity()
<< "->"
<< sampleBufferCapacity;
m_sampleBuffer.resetCapacity(sampleBufferCapacity);
}
DWORD dwSampleBufferIndex = 0;
while (dwSampleBufferIndex < dwSampleBufferCount) {
IMFMediaBuffer* pMediaBuffer = nullptr;
HRESULT hrGetBufferByIndex = pSample->GetBufferByIndex(dwSampleBufferIndex, &pMediaBuffer);
if (FAILED(hrGetBufferByIndex)) {
qWarning() << kLogPreamble
<< "IMFSample::GetBufferByIndex() failed"
<< hrGetBufferByIndex
<< "-> abort decoding";
DEBUG_ASSERT(pMediaBuffer == nullptr);
break; // prematurely exit buffer loop
}
CSAMPLE* pLockedSampleBuffer = nullptr;
DWORD lockedSampleBufferLengthInBytes = 0;
HRESULT hrLock = pMediaBuffer->Lock(
reinterpret_cast<quint8**>(&pLockedSampleBuffer),
nullptr,
&lockedSampleBufferLengthInBytes);
if (FAILED(hrLock)) {
qWarning() << kLogPreamble
<< "IMFMediaBuffer::Lock() failed"
<< hrLock
<< "-> abort decoding";
safeRelease(&pMediaBuffer);
break; // prematurely exit buffer loop
}
DEBUG_ASSERT((lockedSampleBufferLengthInBytes % sizeof(pLockedSampleBuffer[0])) == 0);
SINT lockedSampleBufferCount =
lockedSampleBufferLengthInBytes / sizeof(pLockedSampleBuffer[0]);
SINT copySamplesCount = std::min(
frames2samples(numberOfFramesRemaining),
lockedSampleBufferCount);
if (copySamplesCount > 0) {
// Copy samples directly into output buffer if possible
if (pSampleBuffer != nullptr) {
SampleUtil::copy(
pSampleBuffer,
pLockedSampleBuffer,
copySamplesCount);
pSampleBuffer += copySamplesCount;
}
pLockedSampleBuffer += copySamplesCount;
lockedSampleBufferCount -= copySamplesCount;
m_currentFrameIndex += samples2frames(copySamplesCount);
numberOfFramesRemaining -= samples2frames(copySamplesCount);
}
// Buffer the remaining samples
SampleBuffer::WritableChunk writableChunk(
m_sampleBuffer.writeToTail(lockedSampleBufferCount));
// The required capacity has been calculated in advance (see above)
DEBUG_ASSERT(writableChunk.size() == lockedSampleBufferCount);
SampleUtil::copy(
writableChunk.data(),
pLockedSampleBuffer,
writableChunk.size());
HRESULT hrUnlock = pMediaBuffer->Unlock();
VERIFY_OR_DEBUG_ASSERT(SUCCEEDED(hrUnlock)) {
qWarning() << kLogPreamble
<< "IMFMediaBuffer::Unlock() failed"
<< hrUnlock;
// ignore and continue
}
safeRelease(&pMediaBuffer);
++dwSampleBufferIndex;
}
safeRelease(&pSample);
if (dwSampleBufferIndex < dwSampleBufferCount) {
// Failed to read data from all buffers -> kill the reader
qWarning() << kLogPreamble
<< "Failed to read all buffered samples"
<< "-> abort and stop decoding";
safeRelease(&m_pSourceReader);
break; // abort
}
}
return numberOfFrames - numberOfFramesRemaining;
}
