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function mutesound()
{
local PACTL=$(which pactl)
local AMIXER=$(which amixer)
local SYSTEM=alsa
local PACTLERR
local AMIXERERR
if [[ -z "$AMIXER" && -z "$PACTL" ]]; then
logger "openslx sound muter: Neither pactl (pulseaudio) nor amixer (alsa) found. Exiting."
return 1
fi
if [ -n "$PACTL" ]; then
SYSTEM=pulse
logger "openslx sound muter: pulseaudio seems to be installed..."
x=2
# while [ $(su -c "pulseaudio --check" "$LOCALUSER") ]; do
while [ -z "$(ps aux|grep /pulseaudio|grep -v grep)" ]; do
logger "openslx sound muter: Waiting for pulseaudio..."
if [ "$x" -gt 30]; then
logger "openslx sound muter: Waited $x sec for pulseaudio, giving up."
[ -n "$AMIXER" ] && SYSTEM=alsa || SYSTEM="" # unset -v SYSTEM
break
fi
sleep $x; x=$((x + 2))
done
fi
# MUTESOUND: Sound 1=aus, 0=an
# This is a bit problematic as there is no way to actually know whether
# a command works within different distributions, esp. alsamixer commands
# tend to successfully mute but not unmute. So we (at this stage) just
# hammer known commands through - one will work, hopefully.
case $MUTESOUND in 0) logger "openslx sound muter: Unmuting sound, using $SYSTEM."
case $SYSTEM in pulse) XDG_RUNTIME_DIR=/run/user/$(id -u $LOCALUSER) su -c "pactl set-sink-mute 0 0" "$LOCALUSER"
PACTLERR=$?
XDG_RUNTIME_DIR=/run/user/$(id -u $LOCALUSER) su -c "$AMIXER" -q -D pulse sset Master unmute "$LOCALUSER"
AMIXERERR=$?
logger "openslx sound muter: Sound hopefully unmuted, pactl: $PACTLERR, amixer: $AMIXERERR."
;;
alsa) "$AMIXER" set Master unmute
AMIXERERR=$?
logger "openslx sound muter: Sound hopefully unmuted, amixer: $AMIXERERR."
;;
esac
;;
1) logger "openslx sound muter: Muting sound, using $SYSTEM"
case $SYSTEM in pulse) XDG_RUNTIME_DIR=/run/user/$(id -u $LOCALUSER) su -c "pactl set-sink-mute 0 1" "$LOCALUSER"
PACTLERR=$?
XDG_RUNTIME_DIR=/run/user/$(id -u $LOCALUSER) su -c "$AMIXER" -q -D pulse sset Master mute "$LOCALUSER"
AMIXERERR=$?
logger "openslx sound muter: Sound hopefully unmuted, pactl: $PACTLERR, amixer: $AMIXERERR."
;;
alsa) "$AMIXER" set Master mute
AMIXERERR=$?
logger "openslx sound muter: Sound hopefully unmuted, amixer: $AMIXERERR."
;;
esac
;;
*) logger "openslx sound muter: Unknown muteSound option $MUTESOUND"
;;
esac
logger "openslx sound muter: end."
}
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