[wdmaudiodev] Re: simple virtual audio driver

  • From: "Paul Titchener" <pt@xxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 5 Nov 2015 18:17:10 -0800

I guess one problem with a “simple” driver is there seems to be differences of
opinion in what should be in that simple driver.

Is there any disadvantage in using the MSVAD sample as the starting point, ie
since it was written a while ago is it using dated approaches that could be
done more efficiently or effectively?

Paul Titchener

From: Tim Roberts
Sent: Thursday, November 5, 2015 5:50 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: simple virtual audio driver

Ivan Angelov wrote:

I need an example of simple virtual audio driver.
The existing sysvad driver is a way too advanced and complex.

We were just talking about this earlier in the week. Have you looked at the
MSVAD sample from the Win 7 WDK?

There are commercial products that do this, like Virtual Audio Cable and
VB-Audio's VB-Cable.

Is it possible to point me to an example which does following:
* installs as audio driver in Win 10
* has single channel microphone
* has mono speaker
* has SW routine which gets called when MIC frames are needed by Windows
* has SW routine which gets called when Windows plays audio frames

Do you need to support ALL applications, or just particular ones? There are
simpler solutions available if you can assume specific applications.

Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.

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