is such a pipeline possible (image)

[minimalniemand]

Hey folks,

I still working on this conferencing solution, but I am also still stuck at the same thing.

The problem with the audio part is, that each participant should not hear himself. So I constructed the pipeline as in the picture. It doesn't put out any packets though.

If I use a rtpmuxer and only one udpsink / multiudpsink at the end, it works, but then any participant gets the muxed audio of all participants.

Any comment is appreciated!



--
Michael Niemand

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Germany

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[Olivier Crête-3]

Hi,

Such a pipeline is the right way to do it, but you're very likely to hit
some corner case. You may want to make the sinks have async=false for a
start. I've been meaning for a long time to write this kind of
application with Farstream, but I never got to it.

Olivier

On Mon, 2012-02-27 at 13:51 +0100, Michael Niemand wrote:

> Hey folks,
>
> I still working on this conferencing solution, but I am also still
> stuck at the same thing.
>
> The problem with the audio part is, that each participant should not
> hear himself. So I constructed the pipeline as in the picture. It
> doesn't put out any packets though.
>
> If I use a rtpmuxer and only one udpsink / multiudpsink at the end, it
> works, but then any participant gets the muxed audio of all
> participants.
>
> Any comment is appreciated!
>
>
>
> --
> Michael Niemand
>
> Albusstr. 17
> 60313 Frankfurt/M
> Germany
>
>
> Tel.: [phone]
> Mobile: [phone]
>
>
> eMail: [hidden email]
> sip:[hidden email]
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

--
Olivier Crête
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[minimalniemand]

For everybody that is interested: I managed to get it working. My problem was in my java code, not gstreamer. Once I got a working pipeline in the command line, the java code was easy to adapt.

here is the working command line: 

GST_DEBUG_DUMP_DOT_DIR=/tmp/ gst-launch --gst-debug-level=2 gstrtpbin name=rtpbin latency=2 sync=false udpsrc name=udpsrc0 caps="application/x-rtp, media=audio, clock-rate=8000, payload=0, encoding-name=PCMU" port=5000 ! rtpbin.recv_rtp_sink_0 rtpbin. ! rtppcmudepay ! mulawdec ! tee name=t0 ! queue max-size-buffers=150 ! liveadder name=mix1 ! mulawenc ! rtppcmupay ! udpsink name=udpsink1 host=192.168.0.101 port=5050 t0. ! queue max-size-buffers=150 ! liveadder name=mix2 ! mulawenc ! rtppcmupay ! udpsink name=udpsink2 host=192.168.0.112 port=5050  rtpbin. ! rtppcmudepay ! mulawdec ! tee name=t1 ! queue max-size-buffers=150 ! liveadder name=mix0 ! mulawenc ! rtppcmupay ! udpsink name=udpsink0 host=192.168.0.101 port=5051 t1. ! queue max-size-buffers=150 ! mix2. rtpbin. ! rtppcmudepay ! mulawdec ! tee name=t2 ! queue max-size-buffers=150 ! mix0. t2. ! queue max-size-buffers=150 ! mix1. 

yes, it's a hell of a pipeline, I know but it does what it should and also puts out a dot-file that you can use to generate a PNG of the pipeline which is very useful for debugging. I hope putting this here helps somebody with similar problems!

regards,

Michael

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