Re: [Linphone-developers] Using MSConf - conference

[Raust Tamatea]

damico a écrit :
> Il 21/06/2010 11:32, Raust Tamatea ha scritto:
> > damico a écrit :
> > > Il 18/06/2010 12:07, Raust Tamatea ha scritto:
> > > > Raust Tamatea a écrit :
> > > > > Hello,
> > > > > I'm using mediastreamer2 to receive / send RTP data.
> > > > > I would like to use the filter MSConf for multiple audio stream. 
> > > > > By following instruction, a simple communication between a phone 
> > > > > and PC is working. Now I've created a conference but when I don't 
> > > > > have any more sound. I've done something like this :
> > > > >
> > > > > ms_filter_link (stream->rtprecv, 0, stream->decoder, 0);
> > > > > ms_filter_link (stream->decoder, 0, stream->dtmfgen, 0);
> > > > > ms_filter_link (stream->dtmfgen, 0, room, 0);
> > > > > ms_filter_link (room, 0, stream->soundwrite, 0);
> > > > >
> > > > > ms_ticker_attach (m_ticker, pRtp->m_rtprecv);
> > > > >
> > > > > with
> > > > >
> > > > > MSFilter * room = ms_filter_new (MS_CONF_ID);
> > > > >
> > > > > With this I can't hear any sound. If I don't use room and directly 
> > > > > go to soundwrite, it's okay.
> > > > > Could you help me ? I can't find any example with audio conferencing.
> > > > >
> > > > > Regards.
> > > > >
> > > > > _______________________________________________
> > > > > Linphone-developers mailing list
> > > > > address@hidden
> > > > > http://lists.nongnu.org/mailman/listinfo/linphone-developers
> > > > Thanks for your answers.
> > > >
> > > > There is something I don't understand with msconf and 
> > > > ms_ticker_attach.
> > > > I create a conference like this :
> > > > ms_filter_link (rtprecv, 0, decoder, 0); ms_filter_link (decoder, 
> > > > 0, dtmfgen, 0); ms_filter_link (dtmfgen, 0, m_room,  1);
> > > > ms_filter_link (m_room, 1, encoder, 0); ms_filter_link (encoder, 0, 
> > > > rtpsend, 0);
> > > >
> > > > Then I link rtprecv with the ticker :
> > > > ms_ticker_attach (m_ticker, rtprecv);
> > > >
> > > > Next I want to link my soundcard :
> > > > ms_filter_link (soundread, 0, m_room, 0);
> > > > ms_filter_link (m_room, 0, soundwrite, 0);
> > > >
> > > > And when I call " ms_ticker_attach (m_ticker, soundread); " then my 
> > > > problem is that my execution_list contain 3 filters. First attach 
> > > > there is only rtprecv. Second attach, there is rtprecv, soundread 
> > > > and again rtprecv.
> > > > Is it normal ? Do I have to detach each filter before adding a new 
> > > > one so it will add all the filters ?
> > > > If I don't do this, then mediastreamer crash because if I detach 
> > > > the first recv the second one is still present but I've already 
> > > > destroyed it in my code.
> > > >
> > > > Any idea ? Perhaps I'm doing something wrong.
> > > >
> > > > Regards.
> > > >
> > > > _______________________________________________
> > > > Linphone-developers mailing list
> > > > address@hidden
> > > > http://lists.nongnu.org/mailman/listinfo/linphone-developers
> > > You can not link a filter to a graph while is running: please link 
> > > all your filters in the graph and then call ms_ticker_attach() just 
> > > a for a filter (for instance soundread)
> > >
> > > Regards
> > >
> > > --Michele
> > >
> > > _______________________________________________
> > > Linphone-developers mailing list
> > > address@hidden
> > > http://lists.nongnu.org/mailman/listinfo/linphone-developers
> >
> > Hello,
> > With your help I can use a conference as I wish. My last problem (I 
> > hope it's the last one) is that I need to send one output of the 
> > conference to the input of another conference with 2 differents tickers.
> > I don't know if it's possible but nothing in the code tells me that I 
> > can't do this. I've tried to play with the pin odd or even but it 
> > didn't help me. I've tried to link directly the output of conf1 to 
> > the input of conf2 and run 2 tickers but I can't have any sound. For 
> > example, I've done this :
> >
> > ms_filter_link (player, 0, conf1, 1);            - 1 file player in 
> > conf1 (input)
> > ms_filter_link (conf1, 1, conf2, 1);             - link conf1 
> > (output) to conf2 (input)
> > ms_filter_link (soundread, 0, conf2, 0);      - 1 mic in conf2 (input)
> > ms_filter_link (conf2, 0, soundwrite, 0);     - 1 speaker in conf2 
> > (output)
> >
> > ms_ticker_attach (ticker1, player);
> > ms_ticker_attach (ticker2, soundread);
> >
> > I've tried using a Tee filter to link the 2 conferences but again no 
> > sound.
> > I hope you can help me.
> >
> > Regards.
> Sorry, but you can't do that with standard msfilters.
>
>
> Regards
> --Michele
>
> _______________________________________________
> Linphone-developers mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/linphone-developers
Okay, thanks for this information.
But is it possible to share multiple rtp packet from a session to 
differents conferences ? If I use MS_TEE, I don't understand how to use 
it with tickers.
For example :

ms_filter_link(rtprecv,0,decoder,0);
ms_filter_link(decoder,0,dtmfgen,0);
ms_filter_link(dtmfgen,0,tee,0);
ms_filter_attach(ticker1,rtprecv);      // Process RTP Packet and decode DTMF

ms_filter_link(tee,0,conf1,0);
ms_filter_attach(ticker2,tee,0);        // Process Tee output pin 0 to conf 1

ms_filter_link(tee,1,conf2,0);
ms_filter_attach(ticker3,tee,0);        // Process Tee output pin 1 to conf 2


When doing this I just have a crash in mediastreamer2 because the 
rtprecv filter does not have a ticker. I might be doing something wrong.
If it's not a good way to do what I want, is there any solution to share 
a RTP incoming packet between 2, 3 or more conferences ? Any examples ? 
I will try to see why my program is crashing.

Thanks for your help again.
Regards.