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Re: [Linphone-developers] Removing requirement for audio device

From: Edwin Cordeiro
Subject: Re: [Linphone-developers] Removing requirement for audio device
Date: Tue, 22 Aug 2006 18:16:44 -0300


I was trying to make it, but I have got no good news for you... There is a lot of code that try to use the system sound, not only to send and receive but for configuration too, I tried to eliminate then but its look like much more difficulty then I thought. I'm not with the code I have made the changes, but I will send you the day after tomorrow. And the first place to start is change on linphonecore on the the function
linphone_core_start_media_streams(LinphoneCore *lc, LinphoneCall *call) changing the line
of the linphonecore.c for the line
The function audio_stream_start_with_files is the one that sipomatic uses and get and send audio to files correctly.
I was really thinking on build another sipphone with the same libraries that linphone uses but with less resources and without support to sound system, because I think it would fit better to my embedded system if I could have less dependencies and a smaller sipphone, a friend of mine was thinking to help me on this work and if you were interested we could make it together.

See you,
Edwin Cordeiro

On 8/22/06, Greg Lee <address@hidden> wrote:
Hello.  I am considering using linphone to automatically generate call traffic.  I have
already cross-compiled linphone for the platform that I am using and have run the
application and successfully placed calls.  Now I need to make some modifications to
linphone in order to eliminate access to audio devices (mic and speaker) and replace them
with static files that contain audio to be transmitted and then audio recorded at the
other end.  Again, there will be no hardware audio devices used, just read and write to

Before I start on this I thought I would ask:

1) Has anyone already done something like this?  If so, would you be willing to share your

2) Does anyone have a recommendations/warnings before I begin this work?


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Edwin Cordeiro
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