[wdmaudiodev] Re: WMA pro pass thru mode on Vista

  • From: Mitchell Rundle <mitchr@xxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Tue, 31 Oct 2006 09:16:33 -0800

In the "Sound" control panel (mmsys.cpl), if you look at the properties for the 
SPDIF "endpoint device" there is a propertypage titled "Supported Formats".  Is 
the WMA box checked?  If you highlight WMA and hit the Test button, what 

Mitch Rundle
Microsoft Corporation

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From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of tachunir@xxxxxxxxxxxxxxxx
Sent: Tuesday, October 31, 2006 1:37 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] WMA pro pass thru mode on Vista

Hi, I've implemented a WaveCyclic driver with SPDIF capability. For the digital 
output pass thru modes, Dolby Digital and DTS work fine, but it doesn't work 
with WMA pro. Same implementation works on XP. I wonder if there's anything 
(related to WMA pro) being handled differently in Vista (RC2)? Are there new 
interfaces I need to implement (DRM?) Or it's because my driver is not signed? 
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