IMFPMediaItem::HasAudio method (mfplay.h)
[The feature associated with this page, MFPlay, is a legacy feature. It has been superseded by MediaPlayer and IMFMediaEngine. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer and IMFMediaEngine instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Queries whether the media item contains an audio stream.
Syntax
HRESULT HasAudio(
[out] BOOL *pfHasAudio,
[out] BOOL *pfSelected
);
Parameters
[out] pfHasAudio
Receives the value TRUE if the media item contains at least one audio stream, or FALSE otherwise.
[out] pfSelected
Receives the value TRUE if at least one audio stream is selected, or FALSE otherwise.
Return value
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
To select or deselect streams before playback starts, call IMFPMediaItem::SetStreamSelection.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps only] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps only] |
| Target Platform | Windows |
| Header | mfplay.h |