core/alsa-utils/alsa

#!/bin/bash

. /etc/rc.conf
. /etc/conf.d/alsa
. /etc/rc.d/functions

case "$1" in
  start)
    stat_busy "Restoring ALSA Levels"
    if [[ ! -e /var/lib/alsa/asound.state ]]; then
      /usr/sbin/alsactl $ALSA_ARGS store || { stat_fail; exit 1; }
    fi
    if /usr/sbin/alsactl $ALSA_ARGS restore; then
      stat_done
      add_daemon alsa
    else
      stat_fail
      exit 1
    fi

    POWERSAVE=${POWERSAVE:-0}
    if [[ -e /sys/module/snd_ac97_codec/parameters/power_save ]] \
	  && (( $POWERSAVE )); then
      echo $POWERSAVE > /sys/module/snd_ac97_codec/parameters/power_save
      [[ -c /dev/dsp ]] && echo 1 > /dev/dsp
    fi
    if [[ -e /sys/module/snd_hda_intel/parameters/power_save ]] \
	  && (( $POWERSAVE )); then
      echo $POWERSAVE > /sys/module/snd_hda_intel/parameters/power_save
      [[ -c /dev/dsp ]] && echo 1 > /dev/dsp
    fi
    ;;
  stop)
    SAVE_VOLUME=${SAVE_VOLUME:-yes}
    if [[ "$SAVE_VOLUME" = "yes" ]]; then
      stat_busy "Saving ALSA Levels"
      /usr/sbin/alsactl $ALSA_ARGS store || { stat_fail; exit 1; }
    else
      stat_busy "Stopping ALSA"
    fi
    if [ "$MUTE_VOLUME" == "yes" ]; then
      /usr/bin/amixer -q set Master 0 mute || { stat_fail; exit 1; }
    fi
    stat_done
    rm_daemon alsa
    ;;
  restart)
    $0 stop
    sleep 1
    $0 start
    ;;
  force-restart)
    stat_busy "Trying to TERM or KILL processes that are blocking ALSA..."
    FILES="$(ls -1 /dev/snd/* | grep -vi control)"
    fuser -k -SIGTERM $FILES
    fuser -k $FILES
    stat_done
    $0 restart
    ;;
  *)
    echo "usage: $0 {start|stop|restart|force-restart}"
esac