IAMAudioInputMixer::put_Mono method (strmif.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 put_Mono method combines all channels into a mono signal.
Syntax
HRESULT put_Mono(
[in] BOOL fMono
);
Parameters
[in] fMono
Specifies mono or multichannel. Use one of the following values.
| Value | Description |
|---|---|
| TRUE | Mono |
| FALSE | Multichannel |
Return value
Returns an HRESULT value. Possible values include the following.
| Return code | Description |
|---|---|
|
Error setting mono control. |
|
Success. |
Remarks
In mono mode, a stereo recording of this input will have the same data in both channels. The result will be a mixture of the left and right signals.
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 | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |