SelectKaraokeAudioPresentationMode method sends karaoke auxiliary channels to the left or right speakers.
HRESULT SelectKaraokeAudioPresentationMode( ULONG ulMode );
Bitwise OR of DVD_KARAOKE_DOWNMIX enumeration indicating how to downmix the five karaoke channels to channels 0 and 1, which are usually output to the left and right speakers.
Returns one of the following values.
||The audio decoder does not support downmixing.|
||The DVD Navigator filter is in an invalid domain.|
||UOP control prohibits the current operation.|
When the DVD Navigator enters karaoke mode, it queries the audio decoder to discover whether it supports karaoke downmixing. If the decoder supports it, then channels 2 through 4 (the karaoke auxiliary channels with the guide vocals, guide melodies, and sound effects) are muted. Use this method to turn individual channels on or off and direct them to channels 0 and 1.
This method is demonstrated in the DVDSample application in CKaraokeDlg::DoModal.
The following table shows the Annex J command name to which this method name corresponds, and the domains in which this method is valid.
|Annex J Command Name||Valid Domains|
|Minimum supported client||Windows XP [desktop apps only]|
|Minimum supported server||Windows Server 2003 [desktop apps only]|
|Header||strmif.h (include Dshow.h)|