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# Common functions shared by LTSP init scripts
# ltsp_config sources ltsp-client-functions
. /usr/share/ltsp/ltsp_config
warn() {
msg="$1"
logger -p user.warning -t ltsp-client "warning: $msg"
}
start_sound() {
if boolean_is_true "$SOUND" ; then
case "$SOUND_DAEMON" in
pulse|'') # The default when no value is set
# Explicitly allow pulse user access to sound devices, ignore errors
if [ -x /usr/bin/setfacl ]; then
/usr/bin/setfacl -m u:pulse:rw /dev/snd/* > /dev/null 2>&1
fi
# Requires 0.9.16+ which uses module-udev-detect instead of
# module-detect and module-stream-restore instead of
# module-volume-restore
PULSE_DETECT=module-udev-detect
PULSE_VOLUME_RESTORE=module-stream-restore
/usr/bin/pulseaudio --system \
--exit-idle-time=-1 \
--disable-shm \
--no-cpu-limit \
--resample-method=trivial \
--high-priority \
--log-target=syslog \
-L $PULSE_DETECT \
-L "module-native-protocol-tcp auth-anonymous=1" \
-L $PULSE_VOLUME_RESTORE \
-L module-rescue-streams \
-L "module-native-protocol-unix auth-anonymous=1" \
-L module-suspend-on-idle \
-n &
;;
[Ff][Aa][Ll][Ss][Ee]|[Nn]|[Nn][Oo])
# Do not do anything if SOUND_DAEMON is False, N, or No
true
;;
*)
warn "Unable to start unsupported sound daemon: '$SOUND_DAEMON'"
;;
esac
fi
}
configure_sound_volume() {
if boolean_is_true "${SOUND:-True}" ; then
CARD_NUM=${1:-0}
# Set up sound volume
## Set higher volume than default if not specified by lts.conf
[ -z "$VOLUME" ] && VOLUME=90
[ -z "$PCM_VOLUME" ] && PCM_VOLUME=90
LANG=C amixer -c${CARD_NUM} scontents | while read line; do
if [ -n "$(echo $line|grep 'Simple mixer control')" ]; then
channel=$(echo $line|sed -e 's/^Simple mixer control //')
else
if [ -n "$channel" ]; then
# Translate the channel name into an environmentally
# friendly variable. In other words, a variable
# in all caps, where forward slashes, hyphens, and
# spaces are replaced by underscores, and anything
# in parentheses is dropped completely
# eg. if the channel is named 'Mic Boost (+20dB)'
# then the variable is simply MIC_BOOST_SWITCH
#
# Oh, and SWITCH is used for on/off switches - value
# should be on or off, and VOLUME is used for volumes
# where the value should be a number representing a
# percentage
channel_name=$(echo ${channel}|sed -e s/^\'// -e s/\'.*$// -e 's/ -//g' -e 's/ [(].*[)]//' -e 's/\//_/g' -e 's/ /_/g' -e 's/-/_/g' |tr [a-z] [A-Z])
if [ -n "$(echo $line|grep volume)" ]; then
eval channel_vol="\$${channel_name}_VOLUME"
if [ "${channel_name}" = "MIC" ]; then
cap="cap"
else
unset cap
fi
if boolean_is_true "${VOLUME_MANUAL}"; then
[ -n "${channel_vol}" ] && echo sset "${channel}" ${channel_vol}% unmute $cap
else
# Set default MIC volumes to 40 if unspecified
# This should resolve feedback issues
case "${channel_name}" in
*MIC*) [ -z "${channel_vol}" ] && channel_vol=40 ;;
esac
echo sset "${channel}" ${channel_vol:-$VOLUME}% unmute $cap
fi
fi
if [ -n "$(echo $line|grep switch)" ]; then
eval channel_switch="\$${channel_name}_SWITCH"
[ -n "${channel_switch}" ] && echo sset "${channel}" ${channel_switch}
fi
fi
unset channel
fi
done | amixer -c${CARD_NUM} --stdin >/dev/null 2>&1
fi
}
start_screen_sessions() {
# If no default was found, there's no SCREEN_xx to be started, so exit
test -n "$SCREEN_DEFAULT" || return
# Start the default screen and make it the active tty
openvt -f -c "${SCREEN_DEFAULT#0}" -s -- /usr/share/ltsp/screen_session "$SCREEN_DEFAULT"
# Give the default screen a head start
sleep 1
# Launch the other screens without switching to them
for i in 01 02 03 04 05 06 07 08 09 10 11 12; do
test "$i" -eq "$SCREEN_DEFAULT" && continue
eval "screen=\$SCREEN_$i"
if [ -n "$screen" ]; then
openvt -f -c "${i#0}" -- /usr/share/ltsp/screen_session "$i"
fi
done
}
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