[wdmaudiodev] Re: msvad mixer -- where's the pan?
- From: "Jeff Pages" <jeff@xxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 8 Oct 2009 08:47:47 +1100
I can answer the other half of the question. The wave and CD Player faders are
generated within kmixer on XP, and are on the input side of that mixer. Your
driver receives the output of kmixer and so never sees those faders. Out of
interest, the Wave fader gets set by the waveOutSetVolume function, as well as
being visible to applications using the mixer API. Of course on Vista and
Windows 7 everything is different.
Jeff
----- Original Message -----
From: Tim Newsham
To: wdmaudiodev
Sent: Thursday, October 08, 2009 7:34 AM
Subject: [wdmaudiodev] Re: msvad mixer -- where's the pan?
answer on "pan" here (still not sure on the cd/wave sliders):
http://msdn.microsoft.com/en-us/library/ms790303.aspx
On Tue, Oct 6, 2009 at 1:28 PM, Tim Newsham <tim.newsham@xxxxxxxxx> wrote:
When I load the msvad "simple" example in winxp, load the audio mixer and
select the vad device, I get a mixer with four slider controls. The
"Speaker"
slider doesn't support mute or balance. The MIDI slider has the balance
swung full to the left, and it will swing back to the left anytime the
volume
slider is used. The other two sliders "Wave" and "CD Player" dont seem to
cause any callbacks into the msvad device.
If I run the KsStudio tool I can select the master volume node in the
topology
filter and individually edit left, right and master volumes independantly.
Why does the mixer think there is only one audio channel? Why are the
"Wave"
and "CD Player" sliders present while not appearing to affect the msvad
driver?
What is the proper way to indicate that a volume node should support left
and
right channels?
TimN
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