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#!/usr/bin/env bash
switch_discord_input=ask # ask|yes|no
sink_name=merged_streams
sink_description=""
while getopts 'n:s:N:S' flag; do
case "${flag}" in
n) no_of_streams="${OPTARG}" ;;
s) switch_discord_input="${OPTARG}" ;;
N) sink_name="${OPTARG}" ;;
D) sink_description="${OPTARG}" ;;
*) ;;
esac
done
if [ "$sink_description" == "" ]; then
sink_description="$sink_name"
fi
# get the amount of streams to merge if not specified
if [ "$no_of_streams" = "" ]; then
printf "\033[1;36mEnter number of sinks/sources to merge: \033[0m"
read -r no_of_streams
fi
# create NULL sink to merge all the audio streams
pacmd load-module module-null-sink sink_name="$sink_name"
# change desc of NULL sink and it's monitor for visual purpose
pacmd update-sink-proplist "$sink_name" device.description="$sink_description"
pacmd update-source-proplist "$sink_name.monitor" device.description="\"Monitor of $sink_name\""
i=0; while [ $i -lt "$no_of_streams" ]; do
# get sources and split
SAVEIFS=$IFS
IFS=$'\n'
# somebody help
sources=($(pacmd list-sources | awk '/name:/ {print $2}; /device.description/ {$1=$2=""; print $0}' | sed 's/^[ \t\"]*//; s/[ \t\"]$//' | awk 'NR%2==0 {printf "\033[34m"$0"\t \033[0;32m"f"\033[0m\n"} {f=$0}'))
IFS=$SAVEIFS
# print all the sources with their indices
for (( j=0; j<${#sources[@]}; j++ )); do
unformatted_sink_name="$(echo "${sources[j]}" | sed 's/\x1B\[[0-9;]\{1,\}[A-Za-z]//g')"
new_sink_name="Monitor of $sink_name <$sink_name.monitor>"
# do not print the newly created NULL output's monitor
if [ "$unformatted_sink_name" != "$new_sink_name" ]; then
printf "\033[1;33m%s: %s\n" "$j" "${sources[$j]}"
fi
done
# ask to enter source number
printf "\033[1;36mEnter a value: \033[0m"
read -r source_idx
# extract source name and save it
source_sel=$(echo "${sources[source_idx]}" | sed 's/\x1B\[[0-9;]\{1,\}[A-Za-z]//g' | awk -F "\t" '{print $2}' | sed 's/^[ <]*//; s/>$//')
# finally create loopback
pacmd load-module module-loopback sink="$sink_name" source="$source_sel"
# get new loopback's index and rename loopback
loopback_idx=$(pacmd list-source-outputs | egrep '(.*index: .*)|(^\s+media.name = .*)' | awk "/Loopback to $sink_name/ {printf f} {f=\$2}")
pacmd update-source-output-proplist "$loopback_idx" media.name="\"Merged stream #$((i+1))\""
i=$((i + 1))
done
# check if switching disabled through flags
if [ "$switch_discord_input" != no ]; then
# get index of discord's source output
discord_idx="$(pacmd list-source-outputs | egrep '(.*index: .*)|(^\s+application.process.binary = .*)' | awk '/Discord/ {printf f} {f=$2}')"
# ask the user and change discord's input to new input
if [ "$discord_idx" == "" ]; then
printf "\033[1;31mDiscord instance not found/recording. If it is running, please use Discord settings or pavucontrol to manually change its input.\033[0m\n"
else
if [ "$switch_discord_input" == ask ]; then
printf "\033[1;36mDiscord is running, switch discord's input to new merged input?(y/n)\033[0m "
# get response
while :; do
read -r response
if [ "$response" == y ] || [ "$response" == Y ]; then
echo did it
pacmd move-source-output "$discord_idx" "$sink_name.monitor"
break
elif [ "$response" == n ] || [ "$response" == N ]; then
break
else
printf "\033[1;36mPlease enter a valid input (y/n):\033[0m "
fi
done
else
echo did it
pacmd move-source-output "$discord_idx" "$sink_name.monitor"
fi
fi
fi
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