On Thu, 27 Feb 2003, Patrick Shirkey wrote:
> Jozef Kosoru wrote:
> > Hi!
> >
> > A couple of questions:
> >
> > I would like to ask what is the main purpose of the aserver. It can run
> > on the same machine as the client only (AFAIK) and it cannot mix multiple
> > client streams into the one device. So I've missed the point of that
> > application -- is there something for which it could be good for?
> >
> > ALSA plugin documentation mentions the 'smix' plugin. But I cannot find
> > any further information nor the source code in the library for that. Is
> > it something which will be introduced it the future ALSA releases?
> > According the doc it is exactly something I've been looking for a long
> > time; pcm device sharing.
> >
>
> This has been discussed many times.
>
> Currently the only ways to get pcm device sharing, I assume you mean
> using multiple devices as one virtual device are to write it up in your
> .asoundrc or use the patch which has been submitted but not applied to
> jack for this purpose.
>
> The former is a little tricky to grok but it has been shown to work. The
> later requires a bit more of a deeper understanding of jack and coding.
>
> There is info in the online docs. Just click on the link in the asoundrc
> section for your device and the file is explained in depth.
>
> If however you mean hardware mixing (multiple streams at the same time)
> then it is dependant on the device and the manufacturers supplied tech
> details.
Note that we have actually the experimental dmix plugin (direct mixing)
which works for i386 architecture in CVS. The usage is simple:
aplay -Dplug:dmix <filename>
You may pass 'plug:dmix' to any other application.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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