[wdmaudiodev] Re: WDM audio driver for 32 bit floating point device.

  • From: "Jeff Pages" <jeff@xxxxxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Tue, 11 Aug 2015 11:39:55 +1000

I think the issue with Vista back then was that the driver couldn’t just
support floating point as its only format, it had to support integer PCM as
well.



Jeff





From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Tim Roberts
Sent: Tuesday, 11 August 2015 9:56 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: WDM audio driver for 32 bit floating point device.



Jeff Pages wrote:

Back in 2007, I tried to do the same thing but Vista didn’t like it. When I
queried it here, Mitch Rundle said, “I agree that would be a sensible
optimization. Unfortunately some of the Vista audio components require that
the device supports integer PCM (or AC3_SPDIF).” Has this changed since then?


As the author of several APOs, I can tell you that the vast majority of the
systems I see use float 32 as their native format.



--
Tim Roberts, timr@xxxxxxxxx <mailto:timr@xxxxxxxxx>
Providenza & Boekelheide, Inc.

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