IMediaObject::GetOutputCurrentType method (mediaobj.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetOutputCurrentType method retrieves the media type that was set for an output stream, if any.
Syntax
HRESULT GetOutputCurrentType(
DWORD dwOutputStreamIndex,
[out] DMO_MEDIA_TYPE *pmt
);
Parameters
dwOutputStreamIndex
Zero-based index of an output stream on the DMO.
[out] pmt
Pointer to a DMO_MEDIA_TYPE structure allocated by the caller. The method fills the structure with the media type.
Return value
Returns an HRESULT value. Possible values include those in the following table.
| Return code | Description |
|---|---|
|
Invalid stream index. |
|
Media type was not set. |
|
Insufficient memory. |
|
Success. |
Remarks
The caller must set the media type for the stream before calling this method. To set the media type, call the IMediaObject::SetOutputType method.
If the method succeeds, call MoFreeMediaType to free the format block.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | mediaobj.h (include Dmo.h) |
| Library | Dmoguids.lib |