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83 lines
3.1 KiB
83 lines
3.1 KiB
#!/bin/bash |
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# Copyright (C) 2014 Julien Bonjean <julien@bonjean.info> |
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# Copyright (C) 2014 Alexander Keller <github@nycroth.com> |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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#------------------------------------------------------------------------ |
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# The second parameter overrides the mixer selection |
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# For PulseAudio users, eventually use "pulse" |
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# For Jack/Jack2 users, use "jackplug" |
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# For ALSA users, you may use "default" for your primary card |
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# or you may use hw:# where # is the number of the card desired |
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if [[ -z "$MIXER" ]] ; then |
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MIXER="default" |
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if command -v pulseaudio >/dev/null 2>&1 && pulseaudio --check ; then |
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# pulseaudio is running, but not all installations use "pulse" |
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if amixer -D pulse info >/dev/null 2>&1 ; then |
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MIXER="pulse" |
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fi |
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fi |
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[ -n "$(lsmod | grep jack)" ] && MIXER="jackplug" |
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MIXER="${2:-$MIXER}" |
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fi |
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# The instance option sets the control to report and configure |
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# This defaults to the first control of your selected mixer |
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# For a list of the available, use `amixer -D $Your_Mixer scontrols` |
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if [[ -z "$SCONTROL" ]] ; then |
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SCONTROL="${BLOCK_INSTANCE:-$(amixer -D $MIXER scontrols | |
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sed -n "s/Simple mixer control '\([^']*\)',0/\1/p" | |
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head -n1 |
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)}" |
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fi |
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# The first parameter sets the step to change the volume by (and units to display) |
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# This may be in in % or dB (eg. 5% or 3dB) |
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if [[ -z "$STEP" ]] ; then |
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STEP="${1:-5%}" |
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fi |
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#------------------------------------------------------------------------ |
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capability() { # Return "Capture" if the device is a capture device |
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amixer -D $MIXER get $SCONTROL | |
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sed -n "s/ Capabilities:.*cvolume.*/Capture/p" |
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} |
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volume() { |
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amixer -D $MIXER get $SCONTROL $(capability) |
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} |
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format() { |
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perl_filter='if (/.*\[(\d+%)\] (\[(-?\d+.\d+dB)\] )?\[(on|off)\]/)' |
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perl_filter+='{CORE::say $4 eq "off" ? "MUTE" : "' |
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# If dB was selected, print that instead |
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perl_filter+=$([[ $STEP = *dB ]] && echo "$label "'$3' || echo "$label "'$1') |
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perl_filter+='"; exit}' |
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perl -ne "$perl_filter" |
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#tmp=$(perl -ne "$perl_filter") |
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#echo "$label $tmp" |
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} |
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#------------------------------------------------------------------------ |
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case $BLOCK_BUTTON in |
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3) amixer -q -D $MIXER sset $SCONTROL $(capability) toggle ;; # right click, mute/unmute |
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4) amixer -q -D $MIXER sset $SCONTROL $(capability) ${STEP}+ unmute ;; # scroll up, increase |
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5) amixer -q -D $MIXER sset $SCONTROL $(capability) ${STEP}- unmute ;; # scroll down, decrease |
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esac |
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volume | format
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