IWMReaderAccelerator::Notify method (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The Notify method is called by the source filter to pass in the negotiated media type.
Syntax
HRESULT Notify(
[in] DWORD dwOutputNum,
[in] WM_MEDIA_TYPE *pSubtype
);
Parameters
[in] dwOutputNum
DWORD that specifies the stream associated with the notification.
[in] pSubtype
Pointer to a media type that describes the current connection parameters for the stream.
Return value
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code .
Remarks
This method enables the reader to update its internal variables and commit to the DirectX VA connection. This is the last place the decoder or reader can fail.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wmsdkidl.h (include Wmsdk.h) |
| Library | Wmvcore.lib; WMStubDRM.lib (if you use DRM) |