|Microsoft DirectX 9.0|
The GetMediaType method retrieves the media type, if the media type differs from the previous sample. This method implements the IMediaSample::GetMediaType method.
HRESULT GetMediaType( AM_MEDIA_TYPE **ppMediaType );
Address of a variable that receives a pointer to an AM_MEDIA_TYPE structure. If the media type has not changed from the previous sample, *ppMediaType is set to NULL.
Returns one of the HRESULT values shown in the following table.
|S_FALSE||The media type has not changed from the previous sample.|
When you are done with the media type, free the memory block by calling the DeleteMediaType utility function.
The CMediaSample::m_pMediaType member variable specifies the media type. The CMediaSample::m_dwFlags member variable specifies whether the media type has changed.