[wdmaudiodev] Re: Any sample code for using the device topology to access IAudioMute?

  • From: Larry Osterman <Larry.Osterman@xxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 6 Dec 2006 07:25:31 -0800

Use the IAudioEndpointVolume interface on the capture interface and query the 
hardware support mask.

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Andy_Wolpert@xxxxxxxxxxxx
Sent: Tuesday, December 05, 2006 4:50 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Any sample code for using the device topology to access 
IAudioMute?


      I need to determine if a microphone supports a mute. I have a device
which I know does not support mute. Using the IAudioEndpoint interface
GetMute and SetMute do not report any error.

      Now I am think I m ay need to use the IDeviceTopology interface to
see if the device supports a mute. Any suggestions to how to code that?

Thanks,

Andy

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