CTransformInputPin::Receive
| Microsoft DirectShow 9.0 |
CTransformInputPin::Receive
The Receive method receives the next media sample in the stream. This method implements the IMemInputPin::Receive method.
Syntax
HRESULT Receive(
IMediaSample *pSample
);
Parameters
pSample
Pointer to the sample's IMediaSample interface.
Return Value
Returns an HRESULT value. Possible values include those shown in the following table.
| Value | Description |
| S_FALSE | Pin is currently flushing; sample was rejected. |
| S_OK | Success. |
Remarks
This method calls the pin's CBaseInputPin::Receive method, which checks the pin's streaming state and checks for format changes in the media type. Then it calls the filter's CTransformFilter::Receive method, which processes the sample and delivers it downstream.
If the filter needs to access the sample after this method returns, it should hold a reference count by calling the IUnknown::AddRef method on the sample. For example, some decoder filters need the current sample in order to decode the next sample.
Requirements
** Header:** Declared in Transfrm.h; include Streams.h.
** Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).
See Also