[pulseaudio-discuss] Select channel for module-rtp-send

Maarten Bosmans mkbosmans at gmail.com
Fri Jun 18 04:07:55 PDT 2010


2010/5/25 Maarten Bosmans <mkbosmans at gmail.com>:
> Hi,
> I have a USB soundcard as a stereo source in PulseAudio and want to
> send the audio as a RTP stream over the network. The two channels are
> unrelated (well not completely, one is the audio from the
> front-of-house mixing console and the other the combined signal from
> two room mics) so I would like to have two separate mono RTP streams.
> As far as I can see this is not possible with current PA. I can see
> two solutions. A new module-remap-source. So there can be two mono
> sources derived from each channel of the soundcard and I can set up
> two rtp-send modules. The other is to add a channel_map parameter to
> module-rtp send, so a mono rtp stream can come from any channel of the
> source, instead of only the mono channel.
> Which approach would be preferable? I could see the value in
> implementing both (eventually). A new module-remap-source would fix an
> obvious gap in the symmetry between sinks and sources, and could
> potentionally be useful in other scenario's too. I think I saw a bug
> report about the lack of a channel_map parameter for module-rtp-sink,
> so adding that to both rtp modules would be good too.
> Any thoughts on which steps to take?
> Maarten

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