[wdmaudiodev] Re: Streaming kernel audio from non-audio device

  • From: "Hakon Strande" <hakons@xxxxxxxxxxxxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 2 Mar 2006 11:10:49 -0800

Yes, there is an infrastructure in the new audio system for an audio driver INF 
to insert audio processing objects into the pipeline. Please contact me 
directly if you want information about this infrastructure.

Hakon Strande
PM Integrated, Internal, External, and Wireless Audio Devices
MediaTech/DMD/Windows Client/Microsoft

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] 
Sent: Thursday, March 02, 2006 11:01 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Streaming kernel audio from non-audio device

Hakon,

However I assume there will be a way to add a global effects filter in Vista? 

The architecture may be different but the capability will be there I hope...

-Chris Perry
Bose Corporation

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Hakon Strande
Sent: Thursday, March 02, 2006 1:50 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Streaming kernel audio from non-audio device

Yes, impossible because the kernel mode component you would "hook" into on XP 
is GONE on Vista.

I would recommend not relying on any kernel mode audio processing if you want 
your solution to work on Vista.

Sincerely,

Hakon Strande
PM Integrated, Internal, External, and Wireless Audio Devices
MediaTech/DMD/Windows Client/Microsoft

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Stanislav Petrenko
Sent: Thursday, March 02, 2006 10:21 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Streaming kernel audio from non-audio device

Dear Hakon.

Thank you for advice. I will try that.

Let me clarify one more thing. If I want to make such a solution (kernel 
streaming between non-audio and audio) universal so that it can work both on 
Windwos XP and Windows Vista, it is impossible. Isn't it?

Regards, Stanislav.

>If you contact Microsoft DDK development support there is a way to do that. 
>They may be able to help you with it. Of course any such solution will not 
>work in Vista.
>
>Hakon Strande
>PM Integrated, Internal, External, and Wireless Audio Devices
>MediaTech/DMD/Windows Client/Microsoft
>
>-----Original Message-----
>From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
>[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Stanislav Petrenko
>Sent: Thursday, March 02, 2006 10:01 AM
>To: wdmaudiodev@xxxxxxxxxxxxx
>Subject: [wdmaudiodev] Re: Streaming kernel audio from non-audio device
>
>Yes, it is for Speakerphone/Call progress functionality on XP. The goal is use 
>system (for example, motherboard) audio as a modem handset.
>
>Thanks, Stanislav.
>
>>Is this for Speakerphone/Call progress type functionality on XP?
>>
>>Hakon Strande
>>PM Integrated, Internal, External, and Wireless Audio Devices
>>MediaTech/DMD/Windows Client/Microsoft
>>-----Original Message-----
>>From: wdmaudiodev-bounce@xxxxxxxxxxxxx
>>[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Stanislav
>>Petrenko
>>Sent: Thursday, March 02, 2006 6:15 AM
>>To: wdmaudiodev@xxxxxxxxxxxxx
>>Subject: [wdmaudiodev] Streaming kernel audio from non-audio device
>>
>>Dear all.
>>
>>I am a new to the kernel streaming, so I would like to ask the
>>following.
>>
>>There is a non-audio device (modem). There is a necessity to stream an
>>audio inside the kernel without affect on the other audio streams. For
>>example, from system microphone -> into sound card -> into splitter ->
>>into modem driver; and back from modem driver -> into kmixer -> into
>>sound card -> into system speakers. 
>>
>>What is a right way to do that? Is it necessary to make a second virtual
>>audio driver? Or is it possible to connect directly to kmixer and
>>splitter?
>>
>>Thanks, Stanislav Petrenko.
>>******************
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>


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