Re: [Linphone-users] sound output issue

[Olivier Kaloudoff]

On Tue, 18 May 2004, Richard Ougendal wrote:

Hi Richard,

>When using the puter as a music source, home theater system, work machine and 
>gaming 
> centre I get very annoyed starting linphone. The problem is that linphone 
> sets the global volume for the puter and therefor sets the volume for  any 
> other app with sound output. When having the puter hooked directly to a 
> power amp using the puter to set the volume its a nighmare to start 
> linphone. Just the same when I listen to music and the phone rings, I 
> need to stop the music to hear the person on the other end.  I would have 
> no problem at all if linphone where setting the volume for linphone and 
> not for every app running on the puter, but I dont think alsa supports this.

> If linphone where to have jack support (http://jackit.sourceforge.net) 
> this could be a reality. Linphone would then have its own sound channel 
> wich you can set the volume just for linphone and not bother other app 
> running with sound output.

I'm running osx, and would love to have esoud daemon or jackit sound 
server support included, too.

>As I'm not a programmer it would be very hard for me trying to implement this. 
>But I would be glad to contribute. 

I have not much skills in C programming, but esound author says that it's
trivial to implement esound support in an application that opens /dev/dsp.

Unfortunatelly, the esound API is not well documented
(www.tux.org/~ricdude/dbdocs/esound_api.html)

I'm currently trying to play with esd command line utilities (like esdcat, 
esdrec), to understand the way they work, and maybe be able to patch 
linphone later.

Let's take a look at jackit, that seems to have more documentation..



Olivier Kaloudoff