CBaseFilter.GetSyncSource method
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetSyncSource method retrieves the reference clock that the filter is using. This method implements the IMediaFilter::GetSyncSource method.
Syntax
HRESULT GetSyncSource(
IReferenceClock **pClock
);
Parameters
-
pClock
-
Address of a variable that receives a pointer to the clock's IReferenceClock interface.
Return value
Returns S_OK or E_POINTER.
Remarks
If the filter is not using a reference clock, *pClock is set to NULL. When the method returns, if *pClock is non-NULL, the IReferenceClock interface has an outstanding reference count. Be sure to release it when you are done.
Requirements
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