[pjsip] Example "Simple PJSUA" without soundcard

Lafras Henning lafras at xietel.com
Fri Sep 21 09:21:43 EDT 2007


At the moment my code is a bit of a hack, of pjsua_app.c,
I am busy seperating it into a more sane structure, will advise once it
looks ok.
regards
Lafras

----- Original Message -----
From: "B. van Klinken" <b.vklinken at rohill.nl>
To: "'pjsip embedded/DSP SIP discussion'" <pjsip at lists.pjsip.org>
Sent: Friday, September 21, 2007 3:13 PM
Subject: Re: [pjsip] Example "Simple PJSUA" without soundcard


> Hello Lafras,
>
> Thanks.
>
> It is possible that you send me the code you used to initiate the
splitcomb.
> Myabe i could fin dout how to use, but it would be very much faster if i
had
> a reference example in source code. We're just starting tom use the PJSIP
> code, so we're not quite familiar with it yet. I hope you will help.
>
> Regards,
>
> B. van Klinken
>
> -----Original Message-----
> From: pjsip-bounces at lists.pjsip.org
> [mailto:pjsip-bounces at lists.pjsip.org]On Behalf Of Lafras Henning
> Sent: 07-09-21 12:42
> To: pjsip embedded/DSP SIP discussion
> Subject: Re: [pjsip] Example "Simple PJSUA" without soundcard
>
>
> Hi this solution from Benny worked just great for us.
> Regards
> Lafras
>
> Frankly I've forgotten about pjmedia_conf_add_passive_port(). :D And I
don't
> have source codes handy with me now so I can't check it out.
>
> But it's true that this function is not used by anything. So it may be
true
> that the implementation is broken.
>
> More over, we now have splitcomb, which achieves the same thing in more
> general manner. So if you want passive ports (actually active probably is
> more correct, but anyway the term has been confusing), you can instantiate
a
> splitcomb, and create a reverse channel on the splitcomb, which then you
can
> add to the bridge using the usual pjmedia_conf_add_port(). Your thread
then
> can feed frames to the splitcomb.
>
> --
> Benny Prijono
> http://www.pjsip.org
>
>
> - original message -
> Subject: [pjsip] Question regarding passive ports.
> From: "Lafras Henning" <lafras at xietel.com>
> Date: 11/09/2007 14:15
>
>  Question regarding passive ports.
>
>
>
> I basically want to create a number of ports(10 to 20) in the conference
> bridge who's audio will be fed and extracted from an external thread.
>
>
>
>
> I can't to find an example of the correct use of
> pjmedia_conf_add_passive_port(), so the following I have gathered from the
> code.
>
>
>
>
> In conference .c get_frame() comment as follows.
>
> /* Get frame from this port.
>
> * For port zero (sound port) and passive ports, get the frame from
>
> * the rx_buffer instead. */
>
> if (conf_port->port == NULL) {.....
>
>
>
>
> So it is clear that passive functions don't have a media port, as in
>
>
>
>
> create_sound_port() calls create_pasv_port with port ==NULL, this Creates
> snd_buf buffers and keeps conf_port->port == NULL to work as above.
>
>
>
>
> However
>
>
>
>
> pjmedia_conf_add_passive_port() creates a port, then calls
create_pasv_port
> which does not create snd_buf buffers and keeps the port as the one
created.
>
>
>
>
> Function pjmedia_conf_add_passive_port() is not used anywhere and is
> inconsistent with the behaviour of sound port, thus seems as though it is
> not implemented correctly? Or can anyone give an example of how to use
> pjmedia_conf_add_passive_port() correctly?
>
>
>
>
> Many thanks and regards
>
> Lafras
>
>
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>
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>
> ----- Original Message -----
> From: "B. van Klinken" <b.vklinken at rohill.nl>
> To: "'pjsip embedded/DSP SIP discussion'" <pjsip at lists.pjsip.org>
> Sent: Friday, September 21, 2007 12:13 PM
> Subject: Re: [pjsip] Example "Simple PJSUA" without soundcard
>
>
> > Hello Benny,
> >
> > Thanks for your answer.
> >
> > What we like to have is use something like "Simple PJSUA", but we don't
> know
> > how we get the audio bytes in our own software routines.
> >
> > We now understand how to disable the soundcard, but the null device is
> > created. But we still then don't know how we interface with the speech
> data.
> >
> > Can you send us a small piece of source code what we should create to
get
> > the databytes into and from our own source code.
> >
> > Regards,
> > B. van Klinken
> >
> > -----Original Message-----
> > From: pjsip-bounces at lists.pjsip.org
> > [mailto:pjsip-bounces at lists.pjsip.org]On Behalf Of Benny Prijono
> > Sent: 07-09-20 19:13
> > To: pjsip embedded/DSP SIP discussion
> > Subject: Re: [pjsip] Example "Simple PJSUA" without soundcard
> >
> >
> > B. van Klinken wrote:
> > > Hello,
> > >
> > > We we're now looking into the pjsip stack and we want to run something
> > like
> > > "Simple PJSUA" on a dedicated computer without soundcard.
> > >
> > > The SIP audio should be exchanged between our existing telecom system
> and
> > > the your stack (audio packets).
> > >
> > > We tried to find some example for this, but could not find it.
> > >
> > > We had a look at "Simple PJSUA", but then we see no audiocard
> > initialisation
> > > at all (so we don't see where the SIP audio is connected to the audio
> > card.
> >
> > If sound device is not initialized by application, PJSUA-LIB will
> > open the default sound device in pjsua_start(). If you want to use
> > no device (that is null sound device in pjsua's term), then call
> > pjsua_set_null_snd_dev() before calling pjsua_start().
> >
> > In pjsua, you can set pjsua to use no device with --null-audio option.
> >
> > HTH,
> >   -benny
> >
> >
> > > We found examples regarding the PJMEDIA stack, but we don't see have
to
> > use
> > > this in the "Simple PJSUA" example.
> > >
> > > So we would like to have a simple application where we can put our own
> > > speech packets into the stack and receive spechdata out of the stack.
> > >
> > > Is there something like this available or can someone tell us how.
> > >
> > > Regards,
> > >
> > > B. van Klinken
> > > Sr. Project Engineer
> > > Rohill Technologies B.V.
> > > Edisonstraat 12, 7903 AN Hoogeveen
> > > P.O. Box 373, 7900 AJ Hoogeveen
> > > The Netherlands
> > > Tel: +31 (0)528 263 355
> > > Fax: +31 (0)528 271 844
> > > http://www.rohill.com/
> > > -
> >
> >
> >
> > _______________________________________________
> > Visit our blog: http://blog.pjsip.org
> >
> > pjsip mailing list
> > pjsip at lists.pjsip.org
> > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
> >
> >
> > _______________________________________________
> > Visit our blog: http://blog.pjsip.org
> >
> > pjsip mailing list
> > pjsip at lists.pjsip.org
> > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
> >
>
>
> _______________________________________________
> Visit our blog: http://blog.pjsip.org
>
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>
>
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> Visit our blog: http://blog.pjsip.org
>
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