Add extra pulseaudio - jack bridge connections to allow jack routing for pulseaudio applications

extra-jack-pulse-connections.sh

#!/bin/bash

sources=(telegram zoom teams discord extra)
sinks=(telegram kodi zoom teams discord extra)
startTime=$(date +%s)

function capitalise() {
  echo $1 | sed -e "s/\b\(.\)/\u\1/g"
}

function start() {

  for sink in "${sinks[@]}"
  do
    # echo $(capitalise ${sink}) Sink
    pactl load-module module-jack-sink client_name="'$(capitalise ${sink})'" sink_name="${sink}" sink_properties="starttime=$startTime" connect=no > /dev/null
  done

  for source in "${sources[@]}"
  do
    # echo $(capitalise ${source}) Source
    pactl load-module module-jack-source client_name="'$(capitalise ${source}) '" source_name="${source}" source_properties="starttime=$startTime" connect=no > /dev/null
  done

  echo "Added extra PulseAudio connections"
}

function stop() {
  pactl list modules short | grep $startTime | cut -f1 | xargs -n 1 pactl unload-module

  echo "Removed extra PulseAudio connections"
}

# Kill sleep on any of these signals
trap '[[ $pid ]] && kill $pid' TERM INT HUP QUIT

start
sleep infinity & # Run infinite sleep in background
pid=$! # Save PID of sleep program
wait $pid # Wait for sleep to be killed by the trap
stop 

Updated to leverage array iteration and module listing + property grep to reduce the amount of boilerplate.

Updated to properly name sinks and sources in pulse and to nicely name them in jack. It turned out that the trick is to send a string wrapped in quotes to jack, if you want to have spaces in the client_name.
Since source and sink are distinct clients in jack, you can't give them the same client_name. However, you can end the name with a space character, so they read the same in a jack connection GUI.

I ran into an issue where I'd get a lot of Failure: Module initialization failed lines when trying to run the script.
In sudo journalctl -f I saw that this was because pulseaudio was hitting the maximum number of files that it was allowed to keep open.
The solution was:

sudo nano /usr/lib/systemd/user/pulseaudio.service

In the section [Service] add al line that says:

LimitNOFILE=1024

Note: You can use a higher number than 1024 files if necessary.

Afterwards reload the file and restart pulseaudio:

systemctl --user daemon-reload
systemctl --user restart pulseaudio.service

DON'T run these commands with sudo. PulseAudio is a per-user service, hence the --user flag.