[wdmaudiodev] Re: Exposing a topology to Vista
- From: Hakon Strande <hakons@xxxxxxxxxxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Mon, 10 Mar 2008 15:47:53 -0700
I would like to ask the community to please use the exact ksnodetype that
matches the device you are connecting to Windows. These form factor hints are
used by the system for policy decisions. If the logical device is a pair of
headphones then please use the KSNODETYPE that matches that form factor device
(in that case KSNODETYPE_HEADPHONES)
You can read more about how device topology works in Windows Vista here:
http://ampalliance.org/files/folders/summit_decks/entry53.aspx
[cid:image001.png@01C882C6.1A0A5780]
[cid:image002.png@01C882C6.1A0A5780]
More info relating to Windows Vista and audio:
http://ampalliance.org/blogs/microsoft/archive/2007/08/14/Microsoft-AMP-Summit-Decks.aspx
Sincerely,
Hakon Strande<mailto:HakonS@xxxxxxxxxxxxx> | Windows Sound Team PM | (p)
425.705.0637
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Pages
Sent: Monday, March 10, 2008 3:20 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Exposing a topology to Vista
Hi Andrew,
Going from memory of a discussion on this list a couple of years back (and I
might well be wrong), I think Vista requires the default playback endpoint to
be either a KSNODETYPE_SPEAKER or KSNODETYPE_LINE_CONNECTOR pin. If it's a
KSNODETYPE_SPEAKER pin, it always appears "Speakers" whereas a
KSNODETYPE_LINE_CONNECTOR pin is given its pin name. As far as I know, none of
this Vista-specific stuff has been documented in the WDK as yet.
Jeff
----- Original Message -----
From: Andrew Murray<mailto:amurray@xxxxxxxxxxxxxx>
To: wdmaudiodev@xxxxxxxxxxxxx<mailto:wdmaudiodev@xxxxxxxxxxxxx>
Sent: Tuesday, March 11, 2008 1:41 AM
Subject: [wdmaudiodev] Exposing a topology to Vista
Hello,
I have constructed an audio driver that currently consists of a WaveCyclic
filter and a Topology filter. The topology I expose from these filters appears
fine in Windows XP and KsStudio. However I am not having as much luck within
Vista...
When the 'sounds' applet from the control panel in Vista is opened the correct
playback and recording endpoints appear and have the correct properties
associated with them (i.e. volume, mute, etc). However a red cross appears on
the speaker in the system tray and the message "No audio device is installed"
appears when I click on 'Open Volume Mixer'...
I've searched the archives for this group and browsed the internet but cannot
find any clues as to what may be causing this. Does the group have any
suggestions? Or can someone point me in the right direction, particularly in
where I can find documentation regarding the way in which Vista (or XP for that
matter) discovers the driver's topology.
Most of my topology's pins have custom names; does Vista look for specific
names?
Thanks,
Andrew Murray
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