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Re: [Linphone-users] sound output issue

From: Olivier Kaloudoff
Subject: Re: [Linphone-users] sound output issue
Date: Wed, 19 May 2004 10:52:02 +0200 (CEST)

On Tue, 18 May 2004, Richard Ougendal wrote:

Hi Richard,

>When using the puter as a music source, home theater system, work machine and 
> 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 ( 
> 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

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

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