Sets the callback object that receives notification whenever a video sample is returned to the allocator.
- pNotify [in]
A pointer to the IMFVideoSampleAllocatorNotify interface that receives notification, or NULL to remove the callback.
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
To get a video sample from the allocator, call the IMFVideoSampleAllocator::AllocateSample method. When the sample is released, it returns to the pool of available samples. When this happens, the allocator invokes the IMFVideoSampleAllocatorNotify::NotifyRelease callback.
The allocator holds at most one callback pointer. Calling this method again replaces the previous callback pointer.
Minimum supported client
|Windows 7 [desktop apps | Windows Store apps]|
Minimum supported server
|Windows Server 2008 R2 [desktop apps | Windows Store apps]|