[pulseaudio-discuss] Virtual source (microphone)

[Grzegorz Kryza]

On Wed, 2010-01-20 at 11:45 +0000, Colin Guthrie wrote:
> 'Twas brillig, and Grzegorz Kryza at 20/01/10 11:13 did gyre and gimble:
> > On Tue, 2010-01-19 at 17:33 +0000, Colin Guthrie wrote:
> >> 'Twas brillig, and Grzegorz Kryza at 19/01/10 14:06 did gyre and gimble:
> >>> Probably as a next step we will follow your suggestions and implement a 
> >>> specialized PA module to have a better control over a timing.
> >>> For sure a better solution but a problematic if a application should
> >>> work out of box on a wide set of Linux distributions.
> >>
> >> It would be nice if you basically taught module-tunnel-* all about
> >> compression instead. This has been mentioned in the past but not sure
> >> what the current state of affairs is.
> > 
> > Yes, this can be a solution.
> > 
> > Do You know if tunnel sink/source forwards already mixed sound or mixing
> > should be done by target PA server?
> 
> 
> Well a bit of both, but the tunnel itself will carry pre-mixed sound.
> 
> e.g. setup is this:
> 
> 
> [Local App 1] > +----------+
>                 | Local PA |  >   Tunnel    > +-----------+
> [Local App 2] > +----------+                  | Remote PA |
>                              [Remote App 1] > +-----------+
> 
> 
> So Local App 1 & 2 will be mixed and passed out through the tunnel, then
> the result will be mixed with Remote App 1 and ultimately output as
> appropriate.

Good, it's a helpful info.

So in theory we can add to our application a PA protocol commands used
by tunnel sink/source and use tunnel instead of pipe for
communication...
Do you think that it will improve a timing control compared to raw
communication over a pipes?

Thanks.

> Col


Grzegorz