[wdmaudiodev] Re: Audio OUT on Longhorn
- From: "Hakon Strande" <hakons@xxxxxxxxxxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 14 Jul 2005 23:53:16 -0700
Dear Sir,
The Windows Audio system has been completely re-designed for Longhorn to
better enable high fidelity, transparency, stability, glitch resilience
and low latency. All audio kernel components (like the well-known
kmixer.sys and sysaudio.sys, etc) are gone and the functionality moved
to user mode, the only components left in the kernel is the audio helper
library PortCls.sys and the miniport driver itself.
This may be the cause of your problem depending on what you mean by "AVS
WDM". Longhorn audio system documentation will most likely be available
sometime during the Beta 2 time frame but compatibility goal with legacy
drivers is 100% so if you have issues please file bugs through the beta
program.
You could review the relevant information available here in the mean
time:
http://www.microsoft.com/whdc/device/audio/default.mspx
Sincerely,
Hakon Strande
PM Internal, External and Wireless Audio Devices
MediaTech/DMD/Windows Client/Microsoft
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Guenter
Hildebrandt
Sent: Thursday, July 14, 2005 11:19 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Audio OUT on Longhorn
Hi,
We have an AVS WDM Audio driver which expose a Audio render interface.
It works well on XP and W2K. On Longhorn the interface is not routed to
the user mode. It is visible in KS Studio.
Has anybody a hint, who Microsoft has changed the rules to route an
audio interface to the user mode?
Thanks
Guenter
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