Re: [Xen-devel] Sound support in Xen?!

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

A networked solution will probably work well enough --- even a stereo
16-bit 44kHz stream would be less than 1Mbps. However, a custom
frontend/backend could work very nicely. It wouldn't be necessary to
have much signalling from frontend -> backend because the backend will
simply poll the data ring at the appropriate rate. It'd be very low
overhead.

If oding this I'd put the 'backend driver' in a user-space app so that
it can easily make use of existing software audio mixers.

 -- Keir

> On that subject, what would be involved in writing a sound driver with front 
> end and back end components, so that xenU sees a normal sound card and xen0 
> can mix the outputs together and pump them out to a real sound card?
> 
> I guess sound in virtual machines only has limited uses though, and most of 
> those could be serviced via existing networked solutions.
> 
> James
> 
> ________________________________________
> From: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx 
> [mailto:xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Muthu Annamalai
> Sent: Wednesday, 3 November 2004 12:05
> To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] Sound support in Xen?!
> 
> Hi Everyone,
>  
> I am a grad student and am very new to Xen :)  My project requires sound 
> support in the virtual machine, but Xen does not seem to support it.  Do you 
> know of anyone who has enabled sound support in Xen or are there any work 
> arounds?
>  
> Thanks for your time!
> Muthu
> ________________________________________
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 -=- MIME -=- 
On that subject, what would be involved in writing a sound driver with =
front end and back end components, so that xenU sees a normal sound card =
and xen0 can mix the outputs together and pump them out to a real sound =
card?

I guess sound in virtual machines only has limited uses though, and most =
of those could be serviced via existing networked solutions.

James

________________________________________
From: xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx =
[mailto:xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Muthu =
Annamalai
Sent: Wednesday, 3 November 2004 12:05
To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Sound support in Xen?!

Hi Everyone,
=A0
I am a grad student and am very new to Xen :)=A0 My project requires =
sound support in the virtual machine, but Xen does not seem to support =
it.=A0 Do you know of anyone who has enabled sound support in Xen or are =
there any work arounds?
=A0
Thanks for your time!
Muthu
________________________________________
Do you Yahoo!?
Check out the new Yahoo! Front Page. www.yahoo.com


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