The following method for C++ shows how to get the DVR Sink object from the ltmmPlayControl object and use it to copy DVR buffered data to a new file.
void PlayerDVRCopyToFile(IltmmPlay *pPlay)
{
IUnknown *punk = NULL;
HRESULT hr = pPlay->GetSubObject(ltmmPlay_Object_SourceFilter, &punk);
if(SUCCEEDED(hr) && NULL != punk)
{
ILMDVRSink *pDvrSink;
hr = punk->QueryInterface(IID_ILMDVRSink, (LPVOID*)&pDvrSink);
punk->Release();
if (SUCCEEDED(hr))
{
double start, stop, total;
// Get available range to copy
pDvrSink->GetAvailabilityInfo(&start, &stop, &total);
// Copy the data to the new file
pDvrSink->CopyBufferToFile(L"C:\\Temp\\DVR\\Copied_Capture.mpg", start, stop);
// Release the interface and free string data
pDvrSink->Release();
}
}
}
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