[wdmaudiodev] Re: Applications that appear in volume mixer
- From: Larry Osterman <Larry.Osterman@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 31 Aug 2006 09:59:58 -0700
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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