Tracks the reference counts on a video media sample. Video samples created by the MFCreateVideoSampleFromSurface function expose this interface.
interface IMFTrackedSample : public IUnknown
Use this interface to determine whether it is safe to delete or re-use the buffer contained in a sample. One object assigns itself as the owner of the video sample by calling SetAllocator. When all objects release their reference counts on the sample, the owner’s callback method is invoked.
Header: Declared in mfidl.h.
Library: Use strmiids.lib.