 Important: |
|---|
| This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist. |
Performs transform operations of the filter.
virtual HRESULT Transform( IMediaSample * pIn, IMediaSample * pOut) PURE;
Parameters
- pIn
- Pointer to the input IMediaSampleinterface.
- pOut
- Pointer to the output
IMediaSampleinterface.
Return Values
The overriding member function returns an HRESULTvalue. If it returns S_FALSE, the default implementation of the sample will not be delivered by the default implementation of the CTransformFilter::Receivemember function.
Remarks
The CTransformFilter::Receivemember function calls this member function, which must be overridden with a member function that implements the transform intended for the filter.
Perform your transform operation in the implementation of this member function, reading the data from the input IMediaSampleinterface and writing the data to the output IMediaSampleinterface. The member function returns when the transform is complete, without releasing or delivering either of the samples. Change properties on the output sample if they are not the same as the input sample. For example, change the start and stop time IMediaSample::SetTime), sample status flags ( IMediaSample::IsSyncPoint), and so on.