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CTransInPlaceFilter::Receive

  • Artículo
 
Microsoft DirectShow 9.0

CTransInPlaceFilter::Receive

The Receive method receives a media sample, processes it, and delivers it to the downstream filter.

Syntax

  HRESULT Receive(
    IMediaSample *pSample
);

Parameters

pSample

Pointer to the IMediaSample interface on the sample.

Return Value

Returns an HRESULT value. Possible values include those shown in the following table.

Value Description
S_OK Success
E_UNEXPECTED Unexpected error

Remarks

The filter's input pin calls this method when it receives a sample. The filter calls the Transform method, which the derived class must implement. The Transform method processes the data. If the filter is using only one allocator, it passes pSample directly to the Tranform method. Otherwise, it copies pSample and passes the copy.

If the Transform method returns S_FALSE, the Receive method drops the sample. On the first dropped sample, the filter sends an EC_QUALITY_CHANGE event to the filter graph manager. Otherwise, if the Transform method returns S_OK, the filter delivers the output sample. To do so, it calls the IMemInputPin::Receive method on the downstream input pin.

Requirements

**  Header:** Declared in Transip.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also