IMpegAudioDecoder::put_DualMode method (mpegtype.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Specifies the channel to be decoded.
Syntax
HRESULT put_DualMode(
[in] unsigned long IntDecode
);
Parameters
[in] IntDecode
Specifies the channel(s) to be decoded. See remarks for valid values.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Remarks
The following table lists the valid values for the pIntDecode parameter.
| Constant | Description |
|---|---|
| AM_MPEG_AUDIO_DUAL_MERGE | Specifies that both channels will be decoded. |
| AM_MPEG_AUDIO_DUAL_LEFT | Specifies that the left channel will be decoded. |
| AM_MPEG_AUDIO_DUAL_RIGHT | Specifies that the right channel will be decoded. |
This method is useful for karaoke discs in Video CD (VCD) format that have two mono channels in the audio stream.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | mpegtype.h |
| Library | Strmiids.lib |