[wdmaudiodev] Re: Kmixer mucking with data?

  • From: "Frank Berreth" <fberreth@xxxxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 25 Sep 2002 12:53:24 -0700

The wave volume (kmixers volume) has a max of 0dB. It must be something
else then. Is your driver running at the same sample format?

-----Original Message-----
From: Chris Edgington [mailto:chris.lists@xxxxxxxxxxxxxxxxxxxxxxxx]=20
Sent: Tuesday, September 24, 2002 10:18 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Kmixer mucking with data?


> I'm not sure if I can help here.
> If you want to bypass kmixer on a non-HW accelerated card,=20
> the only way I know of is using DirectKS from the application=20
> (and that's maybe not as easy as you think) but the simple=20
> solution to your problem might be to adjust the "Wave"=20
> volume. Set it to maximum.

The device driver itself doesn't expose any volume properties ... so I'm
assuming the one that I can control is generated by some defaults from
WaveCyclic or by kmixer. It must have a db max > 0 because if I set it
to the max, the values that come to the driver are greater (louder) than
what is in the PCM data I'm sending. Is there a way to just remove
volume adjustments from the stream processing? Maybe my only option is
to add a volume control property to my miniport that has a max of 0? All
this stuff is new to me ....=20

Thanks,
-Chris

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