IMpegAudioDecoder::get_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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Returns which channel is currently being decoded.
Syntax
HRESULT get_DualMode(
[out] unsigned long *pIntDecode
);
Parameters
[out] pIntDecode
Indicates the channel(s) to be decoded.
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 pIntDecode parameter can have one of the values in the following table.
| Constant | Description |
|---|---|
| AM_MPEG_AUDIO_DUAL_MERGE | Both channels are decoded. |
| AM_MPEG_AUDIO_DUAL_LEFT | The left channel is decoded. |
| AM_MPEG_AUDIO_DUAL_RIGHT | The right channel is decoded. |
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 |