Thank you so much Nanang,
I tried it your way and everything looks clearer now... and it works
too... I am getting the RTP stream on port 4002. I had to disable RTCP
because my audio device only supports RTP.
So far I have just one problem left. I can't change the volume of the
conf port associated with that RTP stream. The stream does get muted
if i put the speaker level to 0 but that's about it. I can change the
volume from 1 to 10 with no noticeable difference at all to the actual
voice. The only thing that seems to change is I pick up much more
background noise. But the volume of the voice does not change.
Not sure where the problem lies but I'll keep working at it. I did
specify the codec and clock-rate to match the incoming RTP stream.
Anyway thank you again for your help, I really appreciate it.
Best Regards,
Hubert Langevin
On Tue, Apr 29, 2008 at 4:35 AM, Nanang Izzuddin <nanang at pjsip.org> wrote:
> Hi Hubert,
>
> It seems you are using PJSUA and you need to receive an RTP stream on
> port 4002, then pass the stream to conference bridge without call
> signaling at the first place.
>
> Since there is no call signaling, I think you better use your own
> media transport and don't need to deal with pjmedia session. So the
> steps should be around:
>
> 1. create a UDP pjmedia transport listening on port 4002.
> 2. create stream port with the above pjmedia transport.
> 3. add the stream port to conference bridge (use
> pjsua_conf_add_port(), instead of pjmedia_conf_add_port(), since you
> are using pjsua)
> 4. connect the stream port to other port(s), e.g: sound device, or
> other stream ports.
>
> You should only use the API and not modifying any parts of the
> library, something rather strange/'illegal' in your code snippet
> (well, actually not directly related to the problem):
> - accessing member of pjmedia_session while this struct is opaque.
> - calling create_conf_port(), not API.
> - manage the pjsua's conference manually instead of using PJSUA API
> pjsua_conf_add_port().
>
>
> Regards,
> nanang
>
>
>
>
> On 27/04/2008, Hubert Langevin <hubertlangevin at gmail.com> wrote:
> > Hi everyone,
> >
> > I just had an enquiry. I have a separate audio device that transmits
> > an RTP stream (with no RTCP) to my PC running PJSIP on port 4002. I
> > would like to convert that incoming RTP stream into a conference port
> > in PJSIP so I can use it for conferencing purposes.
> >
> > Here is a little bit of what i did so far:
> >
> > =================================================
> >
> > pj_str_t port_name = pj_str("Stream from Radio 1");
> > pj_str_t codec = pj_str("PCMU/8000/1");
> >
> > pool = pjmedia_endpt_create_pool( pjsua_var.med_endpt, "session",
> > PJMEDIA_SESSION_SIZE, PJMEDIA_SESSION_INC);
> >
> > session = PJ_POOL_ZALLOC_T(pool, pjmedia_session);
> > session->pool = pool;
> > session->endpt = pjsua_var.med_endpt;
> > session->stream_cnt = 1;
> > session->user_data = call;
> >
> > session->stream_info[0].dir = PJMEDIA_DIR_ENCODING_DECODING;
> > session->stream_info[0].type = PJMEDIA_TYPE_AUDIO;
> > session->stream_info[0].fmt.clock_rate = 8000;
> > session->stream_info[0].fmt.type = PJMEDIA_TYPE_AUDIO;
> > session->stream_info[0].fmt.channel_cnt = 2;
> > session->stream_info[0].fmt.encoding_name = codec;
> > session->stream_info[0].rem_addr = addr_RTP;
> >
> > pjmedia_stream_create(pjsua_var.med_endpt,
> > session->pool,&session->stream_info[0],
> > call->med_tp, session, &session->stream[0]);
> >
> > pjmedia_stream_start(session->stream[0]);
> >
> > pjmedia_session_get_port(session, 0, &media_port);
> >
> > create_conf_port(pjsua_var.pool, pjsua_var.mconf,
> > media_port, &port_name, &conf_port);
> >
> > pjsua_var.mconf->ports[1] = conf_port;
> > pjsua_var.mconf->port_cnt++;
> >
> > =================================================
> >
> > I do receive the stream on the right port, but I can't seem to get the
> > audio out of the conf port.
> >
> > Any ideas of what i might be doing wrong?
> >
> > Thank you so much in advance,
> >
> > Best Regards,
> >
> > Hubert Langevin.
> >
> > _______________________________________________
> > 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
>
