[pulseaudio-discuss] [PATCH] add xrdp sink

Laurențiu Nicola lnicola at dend.ro
Tue May 27 23:32:04 PDT 2014


A while ago I submitted a small patch (subsequently included in PA 5.0)
that allows module-rtp-recv to work in an unicast environment. Perhaps
I'll try to do the same for module-rtp-send when I get some time for it.

Laurentiu Nicola

On Wed, May 28, 2014, at 7:53, Alexander E. Patrakov wrote:
> 28.05.2014 02:56, Jay Sorg wrote:
> > Hi Alexander,
> >
> >> One big question up-front, sorry for not asking it earlier. Why do you need
> >> to invent a custom protocol to communicate with xrdp, instead of
> >> implementing something more standard inside XRDP? Especially since your
> >> custom protocol is essentially RTP over stream socket minus sequence numbers
> >> & timestamps, or ESD minus auth plus an 8-byte header?
> >
> > I wanted to limit dependencies and keep it simple but it looks like
> > that is a good idea.
> > I really did not know it was there.  I think you are talking about
> > rtp.c and rtp.h.
> > Is there already a RTP implementation over Unix Domain Sockets?
> Unfortunately, no. All that exists is about multicast IPv4 or IPv6, and 
> there even seems to be no way to suppress Session Announcement Protocol 
> messages.
> > If we switch to this, many of your other comments are NA so lets just
> > address this one first.
> Well, a native unicast RTP sink implementation that takes the "target" 
> parameter would be welcome. That's a lot of work, though.
> If you want something quick-and-dirty, with all the AV-sync issues 
> inherent in your custom protocol due to lack of timestamps or other 
> latency indicators on the wire, and can wait until June 6, I can help 
> you add ESD protocol support in XRDP. This way, not a single line of 
> PulseAudio source code would need to be changed.
> -- 
> Alexander E. Patrakov
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