[Asterisk-video] RE: AVTF - What's going on?

[John Martin]

Hi Paul,
  I also played with fixing app_echo in a more "core" way with the
bridging functions. You're right that's probably the best place to do
it, but it's a quick fix in app_echo and I didn't know a lot about
Asterisk core at the time.

  I've thought about passing the fmtp stuff around as strings but not
all protocols use fmtp. In H.323 you have to have the broken down data
as I think you have to in skinny. H.320 (we might have some aspirations
in that area) and H.324(M) would also need fmtp broken down. I don't
know what IAX does, maybe it uses fmtp? It would probably make sense to
condense down my proposed ast_capablities structures so they don't take
up as much memory.

John

John Martin
John.Martin at AuPix.com
http://www.AuPix.com


-----Original Message-----
From: asterisk-video-bounces at lists.digium.com
[mailto:asterisk-video-bounces at lists.digium.com] On Behalf Of Paul
Cadach
Sent: 17 May 2006 03:46
To: Discussion of video media support in Asterisk
Subject: Re: [Asterisk-video] RE: AVTF - What's going on?

Hi,

John Martin wrote:
[skipped]

> App_echo:
> - simply added a ast_indicate at the front of the app so that if you
do
> a playback or IVR before hitting app_echo then you don't get any
> breakthrough on some endpoints.

That should be fixed at channel/core level just because app_echo is
simplest application so you could have problems with
other applications too.

[skipped]

> Channel.c/h
> - We've come up with a struct to store all the new video caps in. It
> looks like this but I'm sure there'll be lots of views on the way it
> should be done and propagated around Asterisk (the codecnegociation
> branch would maybe be a good start)

Is it better to have fmtp passing as strings between channels? At least
it would guarantee a compatibility for other
non-standard/etc. implementations. Conversions of text representations
into H.323 binary data could be done at chan_h323
level locally or at core level.


WBR,
Paul.

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