Access to DirectDraw Surfaces
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Media Sample objects provided by the VMR to upstream filters support the IVMRSurface interface. To obtain the interface, call QueryInterface on the IMediaSample interface and specify IID_IVMRSurface. Upstream filters can then use the IVMRSurface methods to access and manipulate the surface that has been created by the VMR.
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