94 lines
3.5 KiB
Bash
Executable File
94 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# Copyright (C) 2014 Julien Bonjean <julien@bonjean.info>
|
|
# Copyright (C) 2014 Alexander Keller <github@nycroth.com>
|
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# original source: https://github.com/vivien/i3blocks-contrib/tree/master/volume
|
|
# check the readme: https://github.com/vivien/i3blocks-contrib/blob/master/volume/README.md
|
|
#------------------------------------------------------------------------
|
|
|
|
# The second parameter overrides the mixer selection
|
|
# For PulseAudio users, eventually use "pulse"
|
|
# For Jack/Jack2 users, use "jackplug"
|
|
# For ALSA users, you may use "default" for your primary card
|
|
# or you may use hw:# where # is the number of the card desired
|
|
if [[ -z "$MIXER" ]] ; then
|
|
MIXER="default"
|
|
if command -v pulseaudio >/dev/null 2>&1 && pulseaudio --check ; then
|
|
# pulseaudio is running, but not all installations use "pulse"
|
|
if amixer -D pulse info >/dev/null 2>&1 ; then
|
|
MIXER="pulse"
|
|
fi
|
|
fi
|
|
[ -n "$(lsmod | grep jack)" ] && MIXER="jackplug"
|
|
MIXER="${2:-$MIXER}"
|
|
fi
|
|
|
|
# The instance option sets the control to report and configure
|
|
# This defaults to the first control of your selected mixer
|
|
# For a list of the available, use `amixer -D $Your_Mixer scontrols`
|
|
if [[ -z "$SCONTROL" ]] ; then
|
|
SCONTROL="${BLOCK_INSTANCE:-$(amixer -D $MIXER scontrols |
|
|
sed -n "s/Simple mixer control '\([^']*\)',0/\1/p" |
|
|
head -n1
|
|
)}"
|
|
fi
|
|
|
|
# The first parameter sets the step to change the volume by (and units to display)
|
|
# This may be in in % or dB (eg. 5% or 3dB)
|
|
if [[ -z "$STEP" ]] ; then
|
|
STEP="${1:-5%}"
|
|
fi
|
|
|
|
# AMIXER(1):
|
|
# "Use the mapped volume for evaluating the percentage representation like alsamixer, to be
|
|
# more natural for human ear."
|
|
NATURAL_MAPPING=${NATURAL_MAPPING:-0}
|
|
if [[ "$NATURAL_MAPPING" != "0" ]] ; then
|
|
AMIXER_PARAMS="-M"
|
|
fi
|
|
|
|
#------------------------------------------------------------------------
|
|
|
|
capability() { # Return "Capture" if the device is a capture device
|
|
amixer $AMIXER_PARAMS -D $MIXER get $SCONTROL |
|
|
sed -n "s/ Capabilities:.*cvolume.*/Capture/p"
|
|
}
|
|
|
|
volume() {
|
|
amixer $AMIXER_PARAMS -D $MIXER get $SCONTROL $(capability)
|
|
}
|
|
|
|
format() {
|
|
|
|
perl_filter='if (/.*\[(\d+%)\] (\[(-?\d+.\d+dB)\] )?\[(on|off)\]/)'
|
|
perl_filter+='{CORE::say $4 eq "off" ? "MUTE" : "'
|
|
# If dB was selected, print that instead
|
|
perl_filter+=$([[ $STEP = *dB ]] && echo '$3' || echo '$1')
|
|
perl_filter+='"; exit}'
|
|
output=$(perl -ne "$perl_filter")
|
|
echo "$LABEL$output"
|
|
}
|
|
|
|
#------------------------------------------------------------------------
|
|
|
|
case $BLOCK_BUTTON in
|
|
3) amixer $AMIXER_PARAMS -q -D $MIXER sset $SCONTROL $(capability) toggle ;; # right click, mute/unmute
|
|
4) amixer $AMIXER_PARAMS -q -D $MIXER sset $SCONTROL $(capability) ${STEP}+ unmute ;; # scroll up, increase
|
|
5) amixer $AMIXER_PARAMS -q -D $MIXER sset $SCONTROL $(capability) ${STEP}- unmute ;; # scroll down, decrease
|
|
esac
|
|
|
|
volume | format
|