The trick is to get the PKEY_AudioDevice_SetupPreferred property set in
the endpoint propertystore for the endpoint that you want to be default.
1) Remove the SetupPrefferedAudioDevices registry setting from you INF.
It is not precise enough.
2) For the subdevice that you want to be default add the following
registry entries:
HKR,"EP\\0", %PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER%
HKR,"EP\\0", %PKEY_AudioDevice_SetupPreferred%, %REG_DWORD%,1
3) add to the strings section of the inf
PKEY_AudioEndpoint_Association =
"{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E},2"
PKEY_AudioDevice_SetupPreferred =
"{F3E80BEF-1723-4FF2-BCC4-7F83DC5E46D4},1"
Regards,
Mitch Rundle
Microsoft Corporation
This posting is provided "as is" with no warrantees, and confers no
rights.
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Pages
Sent: Thursday, November 01, 2007 10:21 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Setting default subdevice in Vista
Our driver installs multiple subdevices, each representing a stereo
channel
on our multichannel cards. On XP it seemed the first channel always became
the default device immediately after installation, but on Vista it's
rather
random - sometimes channel 1 on our card is marked default, other times
channel 2 becomes the default.
The SetupPreferredAudioDevices INF keyword allows a particular card to
assert itself as the default device, but is there any way to do the same
thing with individual subdevices on a multichannel card?
Jeff Pages
Innes Corporation Pty Ltd
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
