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dotfiles/.config/waybar/scripts/volume.sh
2025-11-23 11:42:35 +01:00

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#!/usr/bin/env bash
#
# Adjust default device volume and send a notification with the current level
#
# Requirements:
# - pactl (libpulse)
# - notify-send (libnotify)
#
# Author: Jesse Mirabel <sejjymvm@gmail.com>
# Created: September 07, 2025
# License: MIT
VALUE=1
MIN=0
MAX=100
ID=2425
print-usage() {
local script=${0##*/}
cat <<- EOF
USAGE: $script [OPTIONS]
Adjust default device volume and send a notification with the current level
OPTIONS:
input Set device as '@DEFAULT_SOURCE@'
output Set device as '@DEFAULT_SINK@'
mute Toggle device mute
raise <value> Raise volume by <value>
lower <value> Lower volume by <value>
Default value: $VALUE
EXAMPLES:
Toggle microphone mute:
$ $script input mute
Raise speaker volume:
$ $script output raise
Lower speaker volume by 5:
$ $script output lower 5
EOF
exit 1
}
check-muted() {
local muted
muted=$(pactl "get-$dev_mute" "$dev" | awk '{print $2}')
local state
case $muted in
'yes') state='Muted' ;;
'no') state='Unmuted' ;;
esac
echo "$state"
}
get-volume() {
local vol
vol=$(pactl "get-$dev_vol" "$dev" | awk '{print $5}' | tr -d '%')
echo "$vol"
}
get-icon() {
local state vol
state=$(check-muted)
vol=$(get-volume)
local icon
local new_vol=${1:-$vol}
if [[ $state == 'Muted' ]]; then
icon="$dev_icon-muted"
else
if ((new_vol < ((MAX * 33) / 100))); then
icon="$dev_icon-low"
elif ((new_vol < ((MAX * 66) / 100))); then
icon="$dev_icon-medium"
else
icon="$dev_icon-high"
fi
fi
echo "$icon"
}
toggle-mute() {
pactl "set-$dev_mute" "$dev" toggle
local state icon
state=$(check-muted)
icon=$(get-icon)
notify-send "$title: $state" -i "$icon" -r $ID
}
set-volume() {
local vol
vol=$(get-volume)
local new_vol
case $action in
'raise')
new_vol=$((vol + value))
((new_vol > MAX)) && new_vol=$MAX
;;
'lower')
new_vol=$((vol - value))
((new_vol < MIN)) && new_vol=$MIN
;;
esac
pactl "set-$dev_vol" "$dev" "${new_vol}%"
local icon
icon=$(get-icon "$new_vol")
notify-send "$title: ${new_vol}%" -h int:value:$new_vol -i "$icon" -r $ID
}
main() {
device=$1
action=$2
value=${3:-$VALUE}
! ((value > 0)) && print-usage
case $device in
'input')
dev='@DEFAULT_SOURCE@'
dev_mute='source-mute'
dev_vol='source-volume'
dev_icon='mic-volume'
title='Microphone'
;;
'output')
dev='@DEFAULT_SINK@'
dev_mute='sink-mute'
dev_vol='sink-volume'
dev_icon='audio-volume'
title='Volume'
;;
*) print-usage ;;
esac
case $action in
'mute') toggle-mute ;;
'raise' | 'lower') set-volume ;;
*) print-usage ;;
esac
}
main "$@"