//-------------------------------------------------------------------
// Write the sample
//
HRESULT VidWriter::writeFrame(BYTE *pData)
{
HRESULT hr;
IMFSample *pSample = NULL;
const DWORD cbBuffer = 4 * m_width * m_height;
// Unlock the buffer
if (m_pBuffer) m_pBuffer->Unlock();
// Set the data length of the buffer
hr = m_pBuffer->SetCurrentLength(cbBuffer);
if (FAILED(hr)) goto done;
// Create a media sample and add the buffer to it
hr = MFCreateSample(&pSample);
if (FAILED(hr)) goto done;
hr = pSample->AddBuffer(m_pBuffer);
if (FAILED(hr)) goto done;
// Set the time stamp and the duration
hr = pSample->SetSampleTime(m_rtStart);
if (FAILED(hr)) goto done;
hr = pSample->SetSampleDuration(m_frametime);
if (FAILED(hr)) goto done;
// increment the time stamp
m_rtStart += m_frametime;
// Send the sample to the Sink Writer
hr = m_pWriter->WriteSample(m_streamIndex, pSample);
done:
SafeRelease(&pSample);
return hr;
}
HRESULT VideoEncoder::WriteTransitionSample(UINT64 sampleDuration, TransitionBase* pTransition, DWORD streamIndex, LONGLONG* startTime)
{
HRESULT hr = S_OK;
IMFMediaBuffer* pMediaBuffer = nullptr;
BYTE* pFrameBuffer = nullptr;
IMFSample* pSample = nullptr;
BYTE* pOutputFrame = nullptr;
for (DWORD i = 0; i < sampleDuration; i++)
{
CheckHR(MFCreateMemoryBuffer(this->m_frameBufferSize, &pMediaBuffer));
pMediaBuffer->Lock(&pFrameBuffer, nullptr, nullptr);
float time = (float)i / (float)sampleDuration;
pOutputFrame = pTransition->GetOutputFrame(time);
CheckHR(MFCopyImage(pFrameBuffer, this->m_frameStride, pOutputFrame, this->m_frameStride, this->m_frameStride, this->m_frameHeight));
CheckHR(pMediaBuffer->Unlock());
CheckHR(pMediaBuffer->SetCurrentLength(this->m_frameBufferSize));
CheckHR(MFCreateSample(&pSample));
CheckHR(pSample->AddBuffer(pMediaBuffer));
CheckHR(pSample->SetSampleTime(*startTime));
CheckHR(pSample->SetSampleDuration(this->GetFrameDuration()));
CheckHR(this->m_pSinkWriter->WriteSample(streamIndex, pSample));
(*startTime) += this->GetFrameDuration();
// 释放示例资源.
SafeRelease(&pMediaBuffer);
SafeRelease(&pSample);
if (pOutputFrame != nullptr)
{
delete pOutputFrame;
pOutputFrame = nullptr;
}
}
cleanup:
if (!SUCCEEDED(hr))
{
DWORD error = GetLastError();
this->m_logFileStream << "意外错误: " << error << endl;
}
SafeRelease(&pMediaBuffer);
SafeRelease(&pSample);
if (pOutputFrame != nullptr)
{
delete pOutputFrame;
pOutputFrame = nullptr;
}
return hr;
}
IMFSample* create_sample(void *data, DWORD len, DWORD alignment, LONGLONG duration) {
HRESULT hr = S_OK;
IMFMediaBuffer *buf = NULL;
IMFSample *sample = NULL;
hr = MFCreateSample(&sample);
if (FAILED(hr)) {
ReportError(L"Unable to allocate a sample", hr);
return NULL;
}
// Yes, the argument for alignment is the actual alignment - 1
hr = MFCreateAlignedMemoryBuffer(len, alignment - 1, &buf);
if (FAILED(hr)) {
ReportError(L"Unable to allocate a memory buffer for sample", hr);
return NULL;
}
if (data)
{
BYTE *buffer;
// lock the MediaBuffer
// this is actually not a thread-safe lock
hr = buf->Lock(&buffer, NULL, NULL);
if (FAILED(hr))
{
SafeRelease(&sample);
SafeRelease(&buf);
return NULL;
}
memcpy(buffer, data, len);
buf->SetCurrentLength(len);
buf->Unlock();
}
sample->AddBuffer(buf);
hr = sample->SetSampleDuration(duration);
SafeRelease(&buf);
return sample;
}
HRESULT WavStream::CreateAudioSample(IMFSample **ppSample)
{
HRESULT hr = S_OK;
IMFMediaBuffer *pBuffer = NULL;
IMFSample *pSample = NULL;
DWORD cbBuffer = 0;
BYTE *pData = NULL;
LONGLONG duration = 0;
// Start with one second of data, rounded up to the nearest block.
cbBuffer = AlignUp<DWORD>(m_pRiff->Format()->nAvgBytesPerSec, m_pRiff->Format()->nBlockAlign);
// Don't request any more than what's left.
cbBuffer = min(cbBuffer, m_pRiff->BytesRemainingInChunk());
// Create the buffer.
hr = MFCreateMemoryBuffer(cbBuffer, &pBuffer);
// Get a pointer to the buffer memory.
if (SUCCEEDED(hr))
{
hr = pBuffer->Lock(&pData, NULL, NULL);
}
// Fill the buffer
if (SUCCEEDED(hr))
{
hr = m_pRiff->ReadDataFromChunk(pData, cbBuffer);
}
// Unlock the buffer.
if (SUCCEEDED(hr))
{
hr = pBuffer->Unlock();
pData = NULL;
}
// Set the size of the valid data in the buffer.
if (SUCCEEDED(hr))
{
hr = pBuffer->SetCurrentLength(cbBuffer);
}
// Create a new sample and add the buffer to it.
if (SUCCEEDED(hr))
{
hr = MFCreateSample(&pSample);
}
if (SUCCEEDED(hr))
{
hr = pSample->AddBuffer(pBuffer);
}
// Set the time stamps, duration, and sample flags.
if (SUCCEEDED(hr))
{
hr = pSample->SetSampleTime(m_rtCurrentPosition);
}
if (SUCCEEDED(hr))
{
duration = AudioDurationFromBufferSize(m_pRiff->Format(), cbBuffer);
hr = pSample->SetSampleDuration(duration);
}
// Set the discontinuity flag.
if (SUCCEEDED(hr))
{
if (m_discontinuity)
{
hr = pSample->SetUINT32(MFSampleExtension_Discontinuity, TRUE);
}
}
if (SUCCEEDED(hr))
{
// Update our current position.
m_rtCurrentPosition += duration;
// Give the pointer to the caller.
*ppSample = pSample;
(*ppSample)->AddRef();
}
if (pData && pBuffer)
{
hr = pBuffer->Unlock();
}
SafeRelease(&pBuffer);
SafeRelease(&pSample);
return hr;
}
void VideoCompressor::AudioSample32Bit2Channel(float *Samples, UINT FrameCount, UINT64 CaptureStartTime)
{
//double TimeInSeconds = _Clock->Elapsed();
const UINT SamplesPerSecond = 44100;
const UINT ChannelCount = 2;
const UINT SampleCount = FrameCount * ChannelCount;
const UINT BitsPerSample = 16;
const UINT BufferLength = BitsPerSample / 8 * ChannelCount * FrameCount;
const LONGLONG SampleDuration = LONGLONG(FrameCount) * LONGLONG(10000000) / SamplesPerSecond; // in hns
//
// Write some data
//
IMFSample *spSample;
IMFMediaBuffer *spBuffer;
BYTE *pbBuffer = NULL;
//
// Create a media sample
//
HRESULT hr = MFCreateSample( &spSample );
hr = spSample->SetSampleDuration( SampleDuration );
//hr = spSample->SetSampleTime( LONGLONG( TimeInSeconds * 10000000.0 ) );
//CaptureStartTime = 10,000,000 * t / f;
//t = CaptureStartTime * f / 10,000,000
LONGLONG FileStartCounter = _Clock->StartTime();
LONGLONG CaptureStartCounter = CaptureStartTime * _Clock->TicksPerSecond() / LONGLONG(10000000);
hr = spSample->SetSampleTime( ( CaptureStartCounter - FileStartCounter ) * LONGLONG(10000000) / _Clock->TicksPerSecond() );
//
// Add a media buffer filled with random data
//
hr = MFCreateMemoryBuffer( BufferLength, &spBuffer );
hr = spBuffer->SetCurrentLength( BufferLength );
hr = spSample->AddBuffer( spBuffer );
hr = spBuffer->Lock( &pbBuffer, NULL, NULL );
__int16 *OutputAudioBuffer = (__int16 *)pbBuffer;
for(UINT SampleIndex = 0; SampleIndex < SampleCount; SampleIndex++)
{
//
// Floats are in the range -1 to 1
//
OutputAudioBuffer[SampleIndex] = int(Samples[SampleIndex] * 32768.0f);
}
hr = spBuffer->Unlock();
//
// Write the media sample
//
hr = _Writer->WriteSample( 1, spSample );
PersistentAssert(SUCCEEDED(hr), "WriteSample failed");
spSample->Release();
spBuffer->Release();
}
STDMETHODIMP CDecWMV9MFT::Decode(const BYTE *buffer, int buflen, REFERENCE_TIME rtStart, REFERENCE_TIME rtStop, BOOL bSyncPoint, BOOL bDiscontinuity, IMediaSample *pMediaSample)
{
HRESULT hr = S_OK;
DWORD dwStatus = 0;
hr = m_pMFT->GetInputStatus(0, &dwStatus);
if (FAILED(hr)) {
DbgLog((LOG_TRACE, 10, L"-> GetInputStatus() failed with hr: 0x%x", hr));
return S_FALSE;
}
if (!(dwStatus & MFT_INPUT_STATUS_ACCEPT_DATA))
return S_FALSE;
if (m_vc1Header && (m_bManualReorder || m_bNeedKeyFrame)) {
AVPictureType pictype = m_vc1Header->ParseVC1PictureType(buffer, buflen);
if (m_bManualReorder) {
if (pictype == AV_PICTURE_TYPE_I || pictype == AV_PICTURE_TYPE_P) {
if (m_bReorderBufferValid)
m_timestampQueue.push(m_rtReorderBuffer);
m_rtReorderBuffer = rtStart;
m_bReorderBufferValid = TRUE;
} else {
m_timestampQueue.push(rtStart);
}
}
if (m_bNeedKeyFrame) {
if (pictype != AV_PICTURE_TYPE_I) {
if (m_bManualReorder)
m_timestampQueue.pop();
return S_OK;
} else {
m_bNeedKeyFrame = FALSE;
bSyncPoint = TRUE;
}
}
}
IMFSample *pSample = nullptr;
hr = MF.CreateSample(&pSample);
if (FAILED(hr)) {
DbgLog((LOG_ERROR, 10, L"Unable to allocate MF Sample, hr: 0x%x", hr));
return E_FAIL;
}
IMFMediaBuffer *pMFBuffer = CreateMediaBuffer(buffer, buflen);
if (!pMFBuffer) {
DbgLog((LOG_TRACE, 10, L"Unable to allocate media buffer"));
SafeRelease(&pSample);
return E_FAIL;
}
pSample->AddBuffer(pMFBuffer);
if (rtStart != AV_NOPTS_VALUE) {
pSample->SetSampleTime(rtStart);
if (rtStop != AV_NOPTS_VALUE && rtStop > (rtStart - 1))
pSample->SetSampleDuration(rtStop - rtStart);
}
pSample->SetUINT32(MFSampleExtension_CleanPoint, bSyncPoint);
pSample->SetUINT32(MFSampleExtension_Discontinuity, bDiscontinuity);
hr = m_pMFT->ProcessInput(0, pSample, 0);
if (hr == MF_E_NOTACCEPTING) {
// Not accepting data right now, try to process output and try again
ProcessOutput();
hr = m_pMFT->ProcessInput(0, pSample, 0);
}
SafeRelease(&pMFBuffer);
SafeRelease(&pSample);
if (FAILED(hr)) {
DbgLog((LOG_TRACE, 10, L"-> ProcessInput failed with hr: 0x%x", hr));
return E_FAIL;
}
return ProcessOutput();
}
