IAMDevMemoryControl::QueryWriteSync method (strmif.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Returns S_OK if the method is required, or S_FALSE otherwise.
Not all on-board memory needs to have WriteSync called to synchronize with the completed write. This method is used to check if the call is necessary.
|strmif.h (include Dshow.h)