[Asterisk-Dev] Zaptel channel architecture

[creslin at digium.com]

On Thu, Jan 20, 2005 at 05:46:31PM +0100, Frederic Paolucci wrote:
> I would like to add video support to meetme for a e-learning project. What I
> want to do is quite "simple" : the video streaming from one attendee (the
> teacher) is sent to all other attendees (students) ; there's no other video
> stream.
> 
> Tell me if I'm wrong, but my idea would be to modify zaptel channel
> (chan_zap.c and ztdummy.c) in order to add video support to that channel (ie
> make it support AST_FORMAT_H263).

I could be totally misunderstanding what you're asking here, but I would think
that if you're doing video conferencing and talking about using H.263 most of
what you'll be dealing with would not be in chan_zap.c, but you might be looking
more at app_meetme.c, chan_sip.c, and the H.323 channel driver.

> Unfortunately, I couldn't find out any document concerning zaptel channel
> architecture, and its' not so simple understanding how it works (for
> example, I could not find out which functions handle audio streams).

There's not a whole lot, other than the source code itself.  Sorry :-(

> Could you give me a piece of information concerning zaptel channel
> architecture?