[wdmaudiodev] Re: Which audio driver model?

  • From: Tim Roberts <timr@xxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Fri, 26 Sep 2008 10:21:21 -0700

Matthias Moetje wrote:
> thanks very much for the info! I had thought PortCls or AvStream was a
> kind
> of pre-WDM model.

WDM is a somewhat misunderstood term.  Essentially, any driver that gets
loaded by plug-and-play (as opposed to service manager) is WDM.

Technically speaking, there's more to it than that; a strictly WDM
driver uses a reduced set of APIs that allow it to run on Windows 98,
but in practical terms that no longer really matters.

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

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