This method 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 HRESULT error value.


If the bTemporalCompression member of the AM_MEDIA_TYPE structure is FALSE, all samples are synchronization points. A filter can begin a stream at any synchronization point.

While calling SetSyncPoint with a value of TRUE (1) sets the synchronization point, calling IsSyncPoint on a synchronization point sample returns S_OK (0).


DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.

See Also

IMediaSample Interface

Last updated on Wednesday, April 13, 2005

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