116 lines
2.5 KiB
Text
116 lines
2.5 KiB
Text
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#!/bin/bash
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# Name and description
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name="mixer-osd"
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description="Provides an OSD (On Screen Display) for basic mixer operations."
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# Some variables
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default_color="green"
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acolor=$default_color
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# This program depends on aosd_cat and amixer (alsa-utils in Debian)
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deps="aosd_cat amixer"
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function usage()
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{
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show_name=$1
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error=$2
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# Show name and description only if explicitly stated
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if [[ $show_name == 1 ]] ; then
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echo -e " $name - $description\n"
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fi
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# Show an error message, if present
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if [[ $error != '' ]] ; then
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echo -e "\033[1m$error\033[0m\n"
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fi
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cat << EOF
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Usage:
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$name -u|-d|-m
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$name -h
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Options:
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-u Volume up
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-d Volume down
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-m Mute/Unmute
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-h Shows this help.
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EOF
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}
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# Check for dependencies
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for dep in $deps ; do
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if [[ `which $dep` == '' ]] ; then
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echo "Please, install $dep for $name to work!"
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exit 1
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fi
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done
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# Managing options
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while getopts "hudm" option ; do
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case $option in
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h )
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usage 1
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exit 0
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;;
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u )
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aarg="Volume ↑ $(amixer -c 0 sset Master 2+ unmute | tail -1 | awk '{print $4}' | tr -d '[]')"
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acolor="royalblue"
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;;
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d )
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aarg="Volume ↓ $(amixer -c 0 sset Master 2- unmute | tail -1 | awk '{print $4}' | tr -d '[]')"
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acolor="gray50"
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;;
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m )
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case $(amixer -c 0 sset Master toggle | tail -1 | awk '{print $6}' | tr -d '[]') in
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on )
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aarg="UNMUTED"
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acolor="green"
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;;
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off )
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aarg="MUTED"
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acolor="red"
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;;
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esac
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;;
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\? )
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echo -e "Please type ${name} -h for help on usage."
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exit 1
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;;
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esac
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done
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shift $(($OPTIND - 1))
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# This program doesn't accept any other argument than flag-options
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if [[ $# -gt 0 ]] ; then
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usage 0 "Invalid argument (\`$1')."
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exit 1
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fi
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# One have to either mute/unmute or change the volume,
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# otherwise program will exit with error code 1
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if [[ -z $aarg ]] ; then
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usage 0 "Please, mute/unmute or change the volume!"
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exit 1
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fi
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# Kills any instance of aosd_cat
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pkill aosd_cat >/dev/null 2>&1
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# Performs osd-ized volume changes
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echo "$aarg" | aosd_cat \
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--fore-color=$acolor \
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--position 4 \
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--font="Droid Sans Bold 32" \
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--y-offset=300 \
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--transparency=2 \
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--back-color="gray10" \
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--back-opacity=50 \
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--padding=20 \
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--fade-full=1500 >/dev/null 2>&1 &
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exit $?
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