92 lines
2 KiB
Text
92 lines
2 KiB
Text
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#!/usr/bin/env sh
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# change Volume in an easy and unified way
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direction=$1
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step=${2:-5dB}
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# amixer channel to target
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amixer_quiet() {
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amixer -c 0 "$@" >/dev/null
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}
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amixer_noisy="amixer -c 0 "
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# Query amixer for the current volume
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get_volume() {
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$amixer_noisy get Master | tail -1 | awk '{print $4}' | sed 's/[^0-9]*//g'
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}
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# query amixer for mute state (off=muted)
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get_mute() {
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$amixer_noisy get Master | tail -1 | awk '{print $6}' | sed 's/[^a-z]*//g'
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}
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set_volume() {
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# Change the volume using alsa(might differ if you use pulseaudio)
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amixer_quiet set Master "$@" >/dev/null
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# Play the volume changed sound
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# -- this is *extremely* laggy (>8s) on my system, no idea why and no time to find out
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# canberra-gtk-play -i audio-volume-change -d "changeVolume"
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}
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# set mute state (off=mute)
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set_mute() {
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if [ "$1" = 'off' ]; then
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amixer_quiet set Master mute
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elif [ "$1" = 'on' ]; then
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amixer_quiet set Master unmute
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else
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[ "$(get_mute)" = "on" ] && newm=off || newm=on
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amixer_quiet set Master "$newm"
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fi
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}
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usage() {
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echo "control-volume up|down [step], with step any int value
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or: control-brightness set [target], with target any int value 0-100"
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}
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send_notification() {
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if type dunstify 1>/dev/null 2>/dev/null; then
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notcmd="dunstify -h string:x-dunst-stack-tag:brightness"
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else
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notcmd="notify-send -h string:x-dunst-stack-tag:brightness"
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fi
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vol="$(get_volume)"
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if [ "$vol" -eq 0 ] || [ "$(get_mute)" = "off" ]; then
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# Show the sound muted notification
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$notcmd -a "changeVolume" -u low -i audio-volume-muted "Volume muted"
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else
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# Show the volume notification
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$notcmd -a "changeVolume" -u low -i audio-volume-high \
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-h int:value:"$vol" "Volume: $vol%"
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fi
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}
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case $direction in
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up)
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set_volume "${step}+"
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;;
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down)
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set_volume "${step}-"
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;;
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mute)
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set_mute "$step"
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;;
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mutetoggle)
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set_mute
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;;
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set)
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if [ -z "$step" ]; then
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echo "set option requires target brightness to be specified."
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return 1
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fi
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set_volume "$step"
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;;
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*)
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usage
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;;
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esac
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send_notification
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