|Microsoft DirectX 9.0|
Retrieves a pointer to the media stream object that created the current sample.
HRESULT GetMediaStream( IMediaStream **ppMediaStream );
[in] Address of a pointer to an IMediaStream interface that will point to the media stream that created the current sample.
Returns S_OK if successful or E_POINTER if ppMediaStream is invalid.
If successful, this method increments the reference count of the media stream specified by ppMediaStream.