HRESULT OutputPin::Push(void *buf, long size)
{
HRESULT hr;
IMediaSample *pSample;
VIDEOINFOHEADER *vi;
AM_MEDIA_TYPE *pmt;
BYTE *dst_buf;
/**
* Hold the critical section here as the pin might get disconnected
* during the Deliver() method call.
*/
m_pLock->Lock();
hr = GetDeliveryBuffer(&pSample, NULL, NULL, 0);
if (FAILED(hr))
goto on_error;
pSample->GetMediaType(&pmt);
if (pmt) {
mediaType.Set(*pmt);
bufSize = pmt->lSampleSize;
}
pSample->GetPointer(&dst_buf);
vi = (VIDEOINFOHEADER *)mediaType.pbFormat;
if (vi->rcSource.right == vi->bmiHeader.biWidth) {
assert(pSample->GetSize() >= size);
memcpy(dst_buf, buf, size);
} else {
unsigned i, bpp;
unsigned dststride, srcstride;
BYTE *src_buf = (BYTE *)buf;
bpp = size / abs(vi->bmiHeader.biHeight) / vi->rcSource.right;
dststride = vi->bmiHeader.biWidth * bpp;
srcstride = vi->rcSource.right * bpp;
for (i = abs(vi->bmiHeader.biHeight); i > 0; i--) {
memcpy(dst_buf, src_buf, srcstride);
dst_buf += dststride;
src_buf += srcstride;
}
}
pSample->SetActualDataLength(size);
hr = Deliver(pSample);
pSample->Release();
on_error:
m_pLock->Unlock();
return hr;
}
HRESULT StaticSourceVideoPin::ReconnectWithChangesSync(void)
{
HRESULT hr = S_OK;
CMediaType mediaType;
CHECK_HR(hr = mediaType.Set(this->m_mt));
CHECK_HR(hr = ApplyParametersToMT(&mediaType));
CHECK_HR(hr = this->m_pFilter->ReconnectPinSync(this, &mediaType));
done:
return hr;
}
