27 Dec
2020
27 Dec
'20
11:17 p.m.
Hey hey,
is there a way to tell PulseAudio to connect to two SPECIFIC ports, like:
system:playback_17 and system:playback_18 instead of the default which is _1
and _2 ?
I know the output module is called jack_out, but I didn't find any info on
options.
Best wishes and thanks for any pointers,
Jeanette
--
* Website: http://juliencoder.de - for summer is a state of sound
* Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
* Audiobombs: https://www.audiobombs.com/users/jeanette_c
* GitHub: https://github.com/jeanette-c
But tell me what happens when it stops? <3
(Britney Spears)
27 Dec
27 Dec
11:36 p.m.
Am 27.12.20 um 22:17 schrieb Jeanette C.:
is there a way to tell PulseAudio to connect to two
SPECIFIC ports, like:
system:playback_17 and system:playback_18 instead of the default which
is _1 and _2 ?
I know the output module is called jack_out, but I didn't find any info
on options.
The module is called module-jack-sink and its documentation is here:
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Mod…
Here's the relevant option:
connect
Takes a boolean value. If enabled (the default) PulseAudio will try
to connect its ports to the physical playback ports of the JACK server
So, the answer is that pulseaudio itself can't do it. But you can of
course connect the ports yourself, e.g. using an auto-connecting tool,
just set the "connect" option to false in that case.
For example, with jack-matchmaker [1], you could do this:
jack-matchmaker -e \
"PulseAudio JACK Sink:front-left" system:playback_17 \
"PulseAudio JACK Sink:front-right" system:playback_18
Just start this whenever, before or after the pulseaudio
module-jack-sink is loaded and it will make the connections, once the
ports become available.
Chris
11:37 p.m.
"Jeanette C." <julien(a)mail.upb.de> writes:
Hey hey,
is there a way to tell PulseAudio to connect to two SPECIFIC ports, like:
system:playback_17 and system:playback_18 instead of the default which
is _1 and _2 ?
I know the output module is called jack_out, but I didn't find any
info on options.
Cf
<https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-jack-sink>
pactl load-module module-jack-sink channels=2 channel_map=17,18
See also module-jackdbus-detect for automatic detection/routing of jack.
--
David Kastrup
11:45 p.m.
Am 27.12.20 um 22:37 schrieb David Kastrup:
pactl load-module module-jack-sink channels=2
channel_map=17,18
That doesn't work here:
$ pactl unload-module <some index>
$ pactl load-module module-jack-sink channels=2 channel_map=11,12
Failure: Module initialization failed
(my interface has only 12 output channels, but the even lower number
don't work)
Chris
11:59 p.m.
Christopher Arndt <chris(a)chrisarndt.de> writes:
Am 27.12.20 um 22:37 schrieb David Kastrup:
Ah yes:
channel_map
Channel map. A list of comma-separated channel names. Must have the same number of
channels as the channels argument.
"channel names". So probably things like system:playback_17 and
system:playback_18 rather than just 17 and 18.
--
David Kastrup
pactl load-module module-jack-sink channels=2
channel_map=17,18
That doesn't work here:
$ pactl unload-module <some index>
$ pactl load-module module-jack-sink channels=2 channel_map=11,12
Failure: Module initialization failed
(my interface has only 12 output channels, but the even lower number
don't work)
28 Dec
28 Dec
12:11 a.m.
Am 27.12.20 um 22:58 schrieb David Kastrup:
"channel names". So probably things like
system:playback_17 and
system:playback_18 rather than just 17 and 18.
Nope, tried that too before my last mail, with the system part and
without, with and without quotes around the option. Same error. Please
test commands before you post them :)
Chris
12:59 a.m.
Thanks all of you! That has been quite helpful.
Best wishes,
Jeanette
--
* Website: http://juliencoder.de - for summer is a state of sound
* Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g
* Audiobombs: https://www.audiobombs.com/users/jeanette_c
* GitHub: https://github.com/jeanette-c
But tell me what happens when it stops? <3
(Britney Spears)
3:04 a.m.
Christopher Arndt <chris(a)chrisarndt.de> writes:
Am 27.12.20 um 22:58 schrieb David Kastrup:
I'd have to wire up quite a bit of hardware for that. I also read:
All device driver modules support the following parameters:
[...]
channels
Audio channels (defaults to 2)
channel_map
Channel map. A list of comma-separated channel names. The
currently defined channel names are: left, right, mono, center,
front-left, front-right, front-center, rear-center, rear-left,
rear-right, lfe, subwoofer, front-left-of-center,
front-right-of-center, side-left, side-right, aux0, aux1 to
aux15, top-center, top-front-left, top-front-right,
top-front-center, top-rear-left, top-rear-right,
top-rear-center, (Default depends on the number of channels and
the driver)
Trying to secondguess one's way from around there, one could try options
channels=18
channel_map=aux0,aux1,aux2,aux3,aux4,aux5,aux6,aux7,aux8,aux9,aux10,aux11,aux12,aux13,aux14,aux15,left,right
and hope that this causes Pulseaudio to (essentially) skip over the
first 16 channels and associate left&right with the last two channels.
Frankly, Pulseaudio belongs to a group of applications where I find the
documentation (if you can even find it) really enfuriating because they
do some sloppy sort of "cleverness" and then put down a half-baked
equivalent of a dirty notepad that explains close to nothing except to
the person writing down the notes.
--
David Kastrup
"channel names". So probably things
like system:playback_17 and
system:playback_18 rather than just 17 and 18.
Nope, tried that too before my last mail, with the system part and
without, with and without quotes around the option. Same error. Please
test commands before you post them :) 
27 Dec
27 Dec
11:48 p.m.
On Sun, 27 Dec 2020, Jeanette C. wrote:
is there a way to tell PulseAudio to connect to two
SPECIFIC ports, like:
system:playback_17 and system:playback_18 instead of the default which is _1
and _2 ?
No, but there is a way to tell it not to connect to any ports. As an
example, set up a jack to pulse bridge:
jack client name: pa-in
number of channels: 4 (default 2)
auto connect: No thank you
pactl load-module module-jack-source client_name=pa-in channels=4 connect=no
Before I do that, I normally do:
pactl unload-module module-jackdbus-detect
So that pulse doesn't do any auto stuff.
jack_connect will connect it to whatever you want
--
Len Ovens
www.ovenwerks.net
1427
days inactive
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days old
linux-audio-user@lists.linuxaudio.org
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Len Ovens