[pulseaudio-discuss] rtp-send questions

[Jim Duda]

Matthew Patterson wrote:
> Otherwise wouldn't you have problems maintaining sync and buffering on 
> the network? "Muted" just means silent PCM audio, not that no audio 
> flows. One could probably implement "silence compression" such that a 
> minimal timing stream flowed during mute periods, but that sounds like a 
> lower priority issue, and they tend to get cut :)
> 
> Matt


Ah, I follow that argument.  That makes perfect sense.

Jim


> 
> 
> 
> Jim Duda wrote:
>> I think I understand #2.  I believe all behave the same, the fact that I 
>> have multiple systems sending RTP was causing confusion.
>>
>> The only real question is:
>>
>> Is is unreasonable to expect the RTP traffic to be silent when an RTP 
>> source is muted?
>>
>> Jim
>>
>> Jim Duda wrote:
>>   
>>> I have 4 linux machines on my local network using pulse audio.
>>> All of which are running pulseaudio 0.9.8.
>>>
>>> Each has rtp-send and rtp-recv installed.
>>> By default, each rtp-send is muted.
>>>
>>> Question #1:  rtp-send mute
>>>
>>> When rtp-send is muted, I expect that no rtp traffic will be sent.
>>> Is this a correct assumption?
>>>
>>> This doesn't appear true, and I am surprised by this.   I have one 
>>> machine with a combined-sink, with one out being rtp-send.  When playing 
>>> any audio to this combined-sink, I get a constant stream of network 
>>> bandwidth on the order of 192K bytes/second.  When I stop the audio, the 
>>> network bandwidth goes down into the noise level.
>>>
>>> The default.pa for this machine is:
>>>
>>> This machine is a server which runs with --system mode.
>>>
>>> load-sample-lazy pulse-hotplug /usr/share/sounds/startup3.wav
>>> load-module module-hal-detect
>>> load-module module-cli-protocol-tcp
>>> load-module module-http-protocol-tcp
>>> load-module module-esound-protocol-unix
>>> load-module module-native-protocol-unix auth-anonymous=1
>>> load-module module-native-protocol-tcp auth-anonymous=1
>>> load-module module-zeroconf-publish
>>> load-module module-null-sink sink_name=sphinx_record description="Sphinx 
>>> Recording Source"
>>> load-module module-null-sink sink_name=sphinx_playback 
>>> description="Sphinx Playback Source"
>>> load-module module-rtp-recv
>>> load-module module-null-sink sink_name=rtp format=s16le channels=2 
>>> rate=44100 description="RTP Multicast Sink"
>>> load-module module-rtp-send source=rtp.monitor
>>> load-module module-combine sink_name=combined 
>>> master=alsa_output.pci_1274_5880_alsa_playback_0 
>>> slaves=alsa_output.pci_8086_24d5_alsa_playback_0,rtp,sphinx_playback
>>> load-module module-volume-restore
>>> load-module module-default-device-restore
>>> load-module module-rescue-streams
>>> load-module module-suspend-on-idle
>>> load-module module-gconf
>>> set-default-sink combined
>>> set-default-source alsa_input.pci_1274_5880_alsa_capture_0
>>> set-sink-mute rtp 1
>>>
>>> Question #2: one machine acts different
>>>
>>> One machine appears to be sending rtp traffic when rtp-send is 
>>> included., even when no audio is playing.  When this one machine has 
>>> rtp-send installed, and muted, and no audio is plaing, I see a constant 
>>> stream of network traffic on the order of 192K bytes/second.
>>>
>>> This machine is a standard desktop which doesn't run with --system
>>>
>>> What could be causing this condition, independent of question #1 above?
>>>
>>> I have confirmed that no streams are playing on this machine, but yet, I 
>>> see the 192K bytes of traffic.  The traffic comes and goes as a function 
>>> of including rtp-send on this machine.
>>>
>>> The default.pa for this machine is:
>>>
>>> load-sample-lazy pulse-hotplug /usr/share/sounds/startup3.wav
>>> load-module module-hal-detect
>>> load-module module-esound-protocol-unix
>>> load-module module-native-protocol-unix auth-anonymous=1
>>> load-module module-native-protocol-tcp auth-anonymous=1
>>> load-module module-http-protocol-tcp
>>> load-module module-zeroconf-publish
>>> load-module module-null-sink sink_name=rtp format=s16le channels=2 
>>> rate=44100 description="RTP Multicast Sink"
>>> load-module module-rtp-send source=rtp.monitor
>>> load-module module-rtp-recv
>>> load-module module-volume-restore
>>> load-module module-default-device-restore
>>> load-module module-rescue-streams
>>> load-module module-suspend-on-idle
>>> load-module module-x11-publish
>>> load-module module-gconf
>>> set-sink-mute rtp 1
>>>
>>> Thanks for any insight.
>>>
>>> Jim
>>>     
>>
>> _______________________________________________
>> pulseaudio-discuss mailing list
>> pulseaudio-discuss at mail.0pointer.de
>> https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss
>>   
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> pulseaudio-discuss mailing list
> pulseaudio-discuss at mail.0pointer.de
> https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss