Receive method receives the next media sample in the stream.
HRESULT Receive( IMediaSample *pSample );
Pointer to the sample's IMediaSample interface.
Returns an HRESULT value. Possible values include those shown in the following table.
||The sample was rejected.|
||NULL pointer argument.|
||Invalid media type.|
||A run-time error occurred.|
||The pin is stopped.|
This method is synchronous and possibly blocking. The pin does one of the following:
- Rejects the sample.
- Returns immediately and processes the sample in a worker thread.
- Processes the sample before returning.
If the pin uses a worker thread to process the sample, it holds a reference count on the sample. In any case, the output pin cannot directly re-use this sample. It must call the IMemAllocator::GetBuffer method to obtain a new sample.
If this method returns S_FALSE or an error code, the upstream filter should stop sending samples until the graph stops or completes a flush operation. Typical reasons for an S_FALSE return value include:
- The downstream pin is flushing; that is, it received a BeginFlush call and has not yet received an EndFlush call.
- The downstream filter detected the end of the stream. (See End-of-Stream Notifications.)
|Minimum supported client||Windows 2000 Professional [desktop apps only]|
|Minimum supported server||Windows 2000 Server [desktop apps only]|
|Header||strmif.h (include Dshow.h)|