[wdmaudiodev] Re: KsCreatePin Failure

  • From: Hakon Strande <hakons@xxxxxxxxxxxxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 12 Oct 2006 08:51:31 -0700

Even if you could insert yourself between a WaveRT driver and the OS
there is no audio data for you to process given the driver model. You
may want to read about WaveRT here: 




Also, the use of filter drivers in kernel mode to add undiscoverable
audio processing is STRONGLY discouraged and has not, is not and will
not be supported by the Windows Audio team.




Hakon Strande

Program Manager Integrated, Internal, External, and Wireless Audio

MediaTech/DMD/Windows Client/Microsoft


From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Harsha HS
Sent: Wednesday, October 11, 2006 11:24 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] KsCreatePin Failure


Hi All,


We have filter driver , which makes a KsCreatePin call and has been 
working well for both vista and XP platforms. KsCreatePin  returns
succes , 
when we load the above driver over WaveCyclic or WavePCI drivers.
But the same function returns Failure when we load it over WaveRT 
driver.It returns STATUS_NO_MATCH.
Has anybody seen this error code on the KsCreatePin call?  I'm 
looking for suggestions on where to turn in troubleshooting. 
The controller is an Azalia HD part(Realtek HDAudio).  
Thanks in advance for any suggestions.
Thanks and regards



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