[wdmaudiodev] Re: Applications that appear in volume mixer

  • From: "Alexandra Schoepel \(Ally\)" <Alexandra@xxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 31 Aug 2006 10:31:31 -0700

Hi Larry,
 
I am using build 5520 right now.  The application is definitely not
playing any audio.

Ally

________________________________

From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Larry Osterman
Sent: Thursday, August 31, 2006 10:00 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Applications that appear in volume mixer



If it plays a sound, it should show up in the mixer.

 

The display is toggled on the session state transition from Inactive to
Active, which occurs when the application calls the WASAPI
"IAudioClient->Start()" method.

 

What build are you testing on?  This behavior has been pretty consistent
across the public releases of Vista, although some early beta2 builds
may have had different behavior (the session state was set to active
when an application called IAudioClient::Initialize() in those builds).

 

 

 

 

 

 

Larry Osterman.

 

 

 

From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Alexandra
Schoepel (Ally)
Sent: Thursday, August 31, 2006 9:52 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Applications that appear in volume mixer

 

Hi, 

What qualifies an application to appear in the "volume mixer" (not sure
if that is the right terminology) on Vista?  

For instance, if I open notepad, it doesn't appear in the mixer.  On the
other hand, I have an application that links the libraries for dsound
and winmm.  It doesn't use any of their functions, yet it is appearing
in the volume mixer.  This same application queries and sets our audio
device for properties via the DeviceIOControl functions.  However, since
it isn't playing any audio or using either of the sound API's, I
wouldn't expect it to actually be in the mixer (nothing to mix)?  Any
advice?

Thanks in advance, 
Ally 

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