|Microsoft DirectX 9.0|
The ReleaseBuffer method releases a media sample.
HRESULT ReleaseBuffer( IMediaSample *pBuffer );
[in] Pointer to the media sample's IMediaSample interface.
Returns S_OK if successful, or an HRESULT value indicating the cause of the error.
When a media sample's reference count reaches zero, it calls this method with itself as the pBuffer parameter. This method releases the sample back to the allocator's list of available samples.