[wdmaudiodev] Re: MSVAD Modification

  • From: "Ismail Degani" <id35@xxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 25 Jun 2003 14:44:07 -0400

Hi everyone,

I'm also trying to use the MSVAD sample code to make a pass through device.
I want to catch every sound sent to the audio card and redirect it, but also
allow it to play though the physical device unmodified. Kevin, have you made
any progress in this area?



>To: wdmaudiodev@xxxxxxxxxxxxx
>Subject: [wdmaudiodev] MSVAD Modification
>From: "Kevin Petersen" <kpeter6448@xxxxxxxxxxx>
>Date: Thu, 14 Nov 2002 10:11:13 -0700
>I am trying to convert the MSVAD sample driver from the XP DDK into a
>pass-through device.  I simply want to get the data in and send it out
> I've tried doing this by copying the data going to the CopyTo
>function to a buffer available to the CopyFrom function.  I am trying to
>handle the data in similar fashion as the CopyTo function handles it but
>reading the buffer instead of writing to it.  When I play a 48kHz stream
>through it and send it to the speakers (44.1khz), the data sounds a little
>choppy.  Is this a downsampling problem or am I overlooking something.  Any
>suggestions would be greatly appreciated.
>Also has anybody got MSVAD to install under Win98 SE?  Unmodified it
>installs without error does not seem to even try and load after
>installation.  Stuck with yellow exclamation.


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