void LoaderSourceFileWindowsMedia::loadData( BufferList *ioData )
{
HRESULT hr;
INSSBuffer * outBuffer;
QWORD pcnsSampleTime;
QWORD pcnsDuration;
DWORD pdwFlags;
DWORD pdwOutputNum;
WORD pwStreamNum;
hr = mReader->GetNextSample( 0, &outBuffer, &pcnsSampleTime, &pcnsDuration, &pdwFlags, &pdwOutputNum, &pwStreamNum );
if( hr == NS_E_NO_MORE_SAMPLES ) {
ioData->mBuffers[0].mSampleCount = 0;
return;
}
DWORD bufferLen;
BYTE * rawBuffer = 0;
hr = outBuffer->GetBufferAndLength( &rawBuffer, &bufferLen );
if( hr != S_OK ) {
//TODO
}
uint32_t bufferSize = bufferLen;
if( bufferSize > ioData->mBuffers[0].mDataByteSize ) {
bufferSize = ioData->mBuffers[0].mDataByteSize;
}
memcpy( ioData->mBuffers[0].mData, rawBuffer, bufferSize );
ioData->mBuffers[0].mDataByteSize = bufferSize;
ioData->mBuffers[0].mSampleCount = bufferSize / mSrcBlockAlign;
mSampleOffset += ioData->mBuffers[0].mSampleCount;
}
unsigned long decoder_read(unsigned long id, void* adata, unsigned long dsize)
{
HRESULT hres = 0;
DWORD i = 0;
INSSBuffer* ppSample;
QWORD pcnsSampleTime;
QWORD pcnsDuration;
DWORD pdwFlags;
DWORD pdwOutputNum;
WORD pwStreamNum;
DWORD lenret = 0;
unsigned char* ptbuff;
if(pstreams[id].buffersize && (pstreams[id].bufferpt < pstreams[id].buffersize))
{
memmove((char*)adata, pstreams[id].buffer + pstreams[id].bufferpt, min(dsize, pstreams[id].buffersize - pstreams[id].bufferpt));
i += min(dsize, pstreams[id].buffersize - pstreams[id].bufferpt);
pstreams[id].bufferpt += min(dsize, pstreams[id].buffersize - pstreams[id].bufferpt);
if(i >= dsize)return dsize;
}
while(1)
{
hres = pstreams[id].wmreader->GetNextSample((WORD)pstreams[id].wmaudioout, &ppSample, &pcnsSampleTime, &pcnsDuration, &pdwFlags, &pdwOutputNum, &pwStreamNum);
if(hres == NS_E_NO_MORE_SAMPLES || FAILED(hres))return 0;
ppSample->GetBufferAndLength(&ptbuff, &lenret);
if(!lenret)break;
memmove((char*)adata + i, ptbuff, min(dsize - i, lenret));
i += lenret;
if(i > dsize)
{
if(!pstreams[id].buffer)
{
pstreams[id].buffer = (char*)malloc(lenret);
pstreams[id].bufferallocsize = lenret;
pstreams[id].buffersize = lenret;
}else{
if(lenret > pstreams[id].bufferallocsize)
{
pstreams[id].buffer = (char*) realloc(pstreams[id].buffer, lenret);
pstreams[id].bufferallocsize = lenret;
}
pstreams[id].buffersize = lenret;
}
memcpy(pstreams[id].buffer, ptbuff, lenret);
pstreams[id].bufferpt = lenret - (i - dsize);
}
ppSample->Release();
if(i >= dsize)return dsize;
}
return i;
}
// THREADED, NO TOUCH
int CVideoInstance::NextFrame()
{
HRESULT hr = S_OK;
QWORD cnsSampleTime = 0;
QWORD cnsSampleDuration = 0;
DWORD dwFlags = 0;
if (!mySyncReader)
{
return 0;
}
INSSBuffer* iNSSBuffer;
hr = mySyncReader->GetNextSample(myVideoStreamNumber,
&iNSSBuffer,
&cnsSampleTime,
&cnsSampleDuration,
&dwFlags,
NULL,//&dwOutputNumber,
NULL);
if (hr == NS_E_NO_MORE_SAMPLES)
{
//no more samples to read in file
myIsStreamDone = true;
return 0;
}
if (SUCCEEDED(hr))
{
// TODO: Process the sample in whatever way is appropriate
// to your application. When finished, clean up.
if (dwFlags == WM_SF_CLEANPOINT) //this a clean point frame, a picture to take read sdk for explantion
{
// AfxMessageBox("found new sample");
//1. Get the Bitmap from the frame
//BYTE* meir;
unsigned char *buffer;
iNSSBuffer->GetBufferAndLength(&buffer, &myDwrdBitmapBufferLength);
if (myBitmapBuffer == NULL)
{
myBitmapBuffer = new unsigned char[myDwrdBitmapBufferLength];
}
memcpy(myBitmapBuffer, buffer, myDwrdBitmapBufferLength);
//calc the current postion in seconds
m_qwCurrrentPostionInSeconds = (cnsSampleTime * 100) / 1000000000;
myFramesRead++;
}
iNSSBuffer->Release();
iNSSBuffer = NULL;
}
return 1;
}