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|
#!/bin/sh
#
# alsa-utils initscript
#
### BEGIN INIT INFO
# Provides: alsa-utils
# Required-Start: $local_fs $remote_fs
# Required-Stop: $remote_fs
# Default-Start: S
# Default-Stop: 0 1 6
# Short-Description: Restore and store ALSA driver settings
# Description: This script stores and restores mixer levels on
# shutdown and bootup.On sysv-rc systems: to
# disable storing of mixer levels on shutdown,
# remove /etc/rc[06].d/K50alsa-utils. To disable
# restoring of mixer levels on bootup, rename the
# "S50alsa-utils" symbolic link in /etc/rcS.d/ to
# "K50alsa-utils".
### END INIT INFO
# Don't use set -e; check exit status instead
# Exit silently if package is no longer installed
[ -x /usr/sbin/alsactl ] || exit 0
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
MYNAME=/etc/init.d/alsa-utils
ALSACTLHOME=/run/alsa
ALSACTLRUNTIME="${ALSACTLHOME}/runtime"
[ -d "$ALSACTLRUNTIME" ] || mkdir -p "$ALSACTLRUNTIME"
. /lib/lsb/init-functions
. /usr/share/alsa/utils.sh
# $1 EXITSTATUS
# [$2 MESSAGE]
log_action_end_msg_and_exit()
{
log_action_end_msg "$1" ${2:+"$2"}
exit $1
}
# $1 PROGRAM
executable()
{
# If which is not available then we must be running before
# /usr is mounted on a system that has which in /usr/bin/.
# Conclude that $1 is not executable.
[ -x /bin/which ] || [ -x /usr/bin/which ] || return 1
which "$1" >/dev/null 2>&1
}
executable amixer || { echo "${MYNAME}: Error: No amixer program available." >&2 ; exit 1 ; }
# $1 <card ID> | "all"
restore_levels()
{
[ -f /var/lib/alsa/asound.state ] || return 1
CARD="$1"
[ "$1" = all ] && CARD=""
# Assume that if alsactl prints a message on stderr
# then it failed somehow. This works around the fact
# that alsactl doesn't return nonzero status when it
# can't restore settings for the card
if MSG="$(alsactl -E HOME="$ALSACTLHOME" -E XDG_RUNTIME_DIR="${ALSACTLRUNTIME}" restore $CARD 2>&1 >/dev/null)" && [ ! "$MSG" ] ; then
return 0
else
# Retry with the "force" option. This restores more levels
# but it results in much longer error messages.
alsactl -E HOME="$ALSACTLHOME" -E XDG_RUNTIME_DIR="${ALSACTLRUNTIME}" -F restore $CARD >/dev/null 2>&1
log_action_cont_msg "warning: 'alsactl -E HOME="$ALSACTLHOME" -E XDG_RUNTIME_DIR="${ALSACTLRUNTIME}" restore${CARD:+ $CARD}' failed with error message '$MSG'"
return 1
fi
}
# $1 <card ID> | "all"
store_levels()
{
CARD="$1"
[ "$1" = all ] && CARD=""
if MSG="$(alsactl -E HOME="$ALSACTLHOME" -E XDG_RUNTIME_DIR="${ALSACTLRUNTIME}" store $CARD 2>&1)" ; then
sleep 1
return 0
else
log_action_cont_msg "warning: 'alsactl store${CARD:+ $CARD}' -E HOME="$ALSACTLHOME" -E XDG_RUNTIME_DIR="${ALSACTLRUNTIME}" failed with error message '$MSG'"
return 1
fi
}
# $1 <card ID>
mute_and_zero_levels_on_card()
{
CARDOPT="-c $1"
for CTL in \
Master \
PCM \
Synth \
CD \
Line \
Mic \
"PCM,1" \
Wave \
Music \
AC97 \
"Master Digital" \
DAC \
"DAC,0" \
"DAC,1" \
Headphone \
Speaker \
Playback
do
mute_and_zero_level "$CTL"
done
# for CTL in \
# "Audigy Analog/Digital Output Jack" \
# "SB Live Analog/Digital Output Jack"
# do
# switch_control "$CTL" off
# done
return 0
}
# $1 <card ID> | "all"
mute_and_zero_levels()
{
TTZML_RETURNSTATUS=0
case "$1" in
all)
for CARD in $(echo_card_indices) ; do
mute_and_zero_levels_on_card "$CARD" || TTZML_RETURNSTATUS=1
done
;;
*)
mute_and_zero_levels_on_card "$1" || TTZML_RETURNSTATUS=1
;;
esac
return $TTZML_RETURNSTATUS
}
# $1 <card ID> | "all"
card_OK()
{
[ "$1" ] || bugout
if [ "$1" = all ] ; then
[ -d /proc/asound ]
return $?
else
[ -d "/proc/asound/card$1" ] || [ -d "/proc/asound/$1" ]
return $?
fi
}
# If a card identifier is provided in $2 then regard it as an error
# if that card is not present; otherwise don't regard it as an error.
case "$1" in
start)
EXITSTATUS=0
TARGET_CARD="$2"
case "$TARGET_CARD" in
""|all) TARGET_CARD=all ; log_action_begin_msg "Setting up ALSA" ;;
*) log_action_begin_msg "Setting up ALSA card ${TARGET_CARD}" ;;
esac
card_OK "$TARGET_CARD" || log_action_end_msg_and_exit "$( [ ! "$2" ] ; echo $? ; )" "none loaded"
preinit_levels "$TARGET_CARD" || EXITSTATUS=1
if ! restore_levels "$TARGET_CARD" ; then
sanify_levels "$TARGET_CARD" || EXITSTATUS=1
restore_levels "$TARGET_CARD" >/dev/null 2>&1 || :
fi
log_action_end_msg_and_exit "$EXITSTATUS"
;;
stop)
EXITSTATUS=0
TARGET_CARD="$2"
case "$TARGET_CARD" in
""|all) TARGET_CARD=all ; log_action_begin_msg "Shutting down ALSA" ;;
*) log_action_begin_msg "Shutting down ALSA card ${TARGET_CARD}" ;;
esac
card_OK "$TARGET_CARD" || log_action_end_msg_and_exit "$( [ ! "$2" ] ; echo $? ; )" "none loaded"
store_levels "$TARGET_CARD" || EXITSTATUS=1
#mute_and_zero_levels "$TARGET_CARD" || EXITSTATUS=1
log_action_end_msg_and_exit "$EXITSTATUS"
;;
restart|force-reload)
EXITSTATUS=0
$0 stop || EXITSTATUS=1
$0 start || EXITSTATUS=1
exit $EXITSTATUS
;;
reset)
TARGET_CARD="$2"
case "$TARGET_CARD" in
""|all) TARGET_CARD=all ; log_action_begin_msg "Resetting ALSA" ;;
*) log_action_begin_msg "Resetting ALSA card ${TARGET_CARD}" ;;
esac
card_OK "$TARGET_CARD" || log_action_end_msg_and_exit "$( [ ! "$2" ] ; echo $? ; )" "none loaded"
preinit_levels "$TARGET_CARD"
sanify_levels "$TARGET_CARD"
log_action_end_msg_and_exit "$?"
;;
*)
echo "Usage: $MYNAME {start [CARD]|stop [CARD]|restart [CARD]|reset [CARD]}" >&2
exit 3
;;
esac
|
