[wdmaudiodev] Re: AVStream Mixer Problems

  • From: "John D. Farmer" <johndfarmer@xxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Mon, 26 Aug 2002 14:16:45 -0700

DJ and Mat,

The ultimate goal is to make available to the end user the ability to easily 
change volume and mute options through the control panel and have connectivity 
with other applications (one example is PowerDVD in which the volume controls 
are not functional unless I have a master volume control, whereas applications 
like Windows Media Player 9 seem to work with the system mixer controls).   I 
understand that applications like PowerDVD probably only query the master 
volume as opposed to the system mixer through DirectX in some way.

The problem is that is there no 'simple' way that I have found to bring up the 
volume controls or link other applications into the system mixers controls.  We 
would like to have the little speaker icon down in the tray so the user can 
double click it and bring up sndvol32.  We would also like to be able to change 
the options in the "Sounds and Audio Devices Properties" control panel under 
the 'Device volume' and 'Speaker settings'  options, but these are disabled 
unless we have a master volume control implemented.  We would also like to 
support these other applications that only support the master volume option.

As I said in my last response it appears that setting to volume on the device 
may not be an option (although I'm still looking into it), so am I basically 
stuck with the system mixer as my only option until the chip supports the 
commands necessary to control volume and mute?

Thanks again,


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