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Determines if the beginning of a sample is a synchronization point.
HRESULT IsSyncPoint(void);
Return Values
Returns S_OK if the sample is a synchronization point and S_FALSE if not; otherwise, returns an HRESULTerror value.
Remarks
This member function implements the IMediaSample::IsSyncPointmethod. It returns the value of the m_dwFlagsSample_SyncPoint property flag. If the bTemporalCompressionmember of the AM_MEDIA_TYPEstructure is FALSE, all samples are synchronization points. A filter can begin a stream at any synchronization point.