#!/sbin/runscript
# $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-driver/files/alsasound,v 1.11 2003/03/05 00:22:55 agenkin Exp $
#
# Gentoo users: add this script to 'boot' run level.
# ==================================================
#
# alsasound     This shell script takes care of starting and stopping
#               the ALSA sound driver.
#
# This script requires /usr/sbin/alsactl and /usr/bin/aconnect programs
# from the alsa-utils package.
#
# Copyright (c) by Jaroslav Kysela <perex@suse.cz> 
#
#
#  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 2 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, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA


alsactl=/usr/sbin/alsactl
asoundcfg=/etc/asound.state
aconnect=/usr/bin/aconnect
alsascrdir=/etc/alsa.d

depend() {
  need bootmisc localmount
  before modules
  after isapnp
  provide alsa-modules
}

start() {

  # Start driver if it isn't already up.
  if [ -d /proc/asound ]
  then
    eerror "ALSA driver is already running."
    return 1
  fi

  #
  # insert all sound modules
  #

  ebegin "Initialising ALSA."

  drivers="`/sbin/modprobe -c | \
    grep -E "^[[:space:]]*alias[[:space:]]+snd-card-[[:digit:]]" | \
    awk '{print $3}'`"
  for i in $drivers; do
    if [ "$i" != off ]; then
      einfon "Starting sound driver: $i "
      /sbin/modprobe $i
      eend 0
    fi
  done
  # The next line is a hack around output race condition (Gentoo bug #12524).
  echo " "
  #
  # insert sequencer modules
  #
  if [ x"$START_ALSA_SEQ" = xyes -a -r /proc/asound/seq/drivers ]; then
    t="`cut -d , -f 1 /proc/asound/seq/drivers`"
    if [ "x$t" != "x" ]; then
      /sbin/modprobe $t
    fi
  fi
  #
  # restore driver settings
  #
  if [ -d /proc/asound ]; then
    if [ ! -r $asoundcfg ]; then
      ewarn "No mixer config in $asoundcfg, you have to unmute your card!"
    else
      if [ -x $alsactl ]; then
      	num_cards=`modprobe -c|awk -F= '/options snd cards_limit/ {print $2;}'`
	if [ "$num_cards" == "" ]; then
          $alsactl -f $asoundcfg restore
        else
          let num_cards--
          for i in `seq 0 $num_cards`; do
            $alsactl -f $asoundcfg restore $i
          done
        fi
      else
        eerror -e "ERROR: alsactl not found!"
      fi
    fi
  fi
  #
  # run card-dependent scripts
  for i in $drivers; do
    t=${i##snd-}
    if [ -x $alsascrdir/$t ]; then
      $alsascrdir/$t
    fi
  done

  #
  # touch lockfile if lockdir exists
  #
  if [ -d /var/lock/subsys ] ; then
    touch /var/lock/subsys/alsasound
  fi
}

terminate() {
  #
  # Kill processes holding open sound devices
  #
  # DEVS=`find /dev/ -follow -type c -maxdepth 1 -print 2>/dev/null | xargs ls -dils | grep "1*1[46]," | cut -d: -f2 | cut -d" " -f2; echo /proc/asound/dev/*`
  ossdevs="/dev/admmidi? /dev/adsp? /dev/amidi? /dev/audio* /dev/dmfm* \
     /dev/dmmidi? /dev/dsp* /dev/dspW* /dev/midi0? /dev/mixer? /dev/music \
     /dev/patmgr? /dev/sequencer* /dev/sndstat"
  alsadevs="/proc/asound/dev/*"
  fuser -k $ossdevs $alsadevs 2> /dev/null 1>/dev/null
  #
  # remove all sequencer connections if any
  #
  if [ -f /proc/asound/seq/clients -a -x $aconnect ]; then
    $aconnect --removeall
  fi
}

stop() {

  if [ ! -d /proc/asound ]
  then
    eerror "ALSA driver is not loaded."
    return 0
  fi

  ebegin "Shutting down ALSA modules."

  # Call terminate function first to kill the processes, holding the drivers.
  terminate

  #
  # store driver settings
  #
  if [ -x $alsactl ]; then
    $alsactl -f $asoundcfg store
  else
    ewarn -n "WARNING: !!!alsactl not found!!! "
  fi
  #
  # remove all sound modules
  #
  /sbin/lsmod | grep -E "^snd" | grep -Ev "^(snd-page-alloc|snd-hammerfall-mem)" | while read line; do \
     /sbin/rmmod `echo $line | cut -d ' ' -f 1`; \
  done
  # remove the 2.2 soundcore module (if possible)
  /sbin/rmmod soundcore 2> /dev/null
  /sbin/rmmod gameport 2> /dev/null

  #
  # remove lockfile if lockdir exists
  #
  if [ -d /var/lock/subsys ] ; then
    rm -f /var/lock/subsys/alsasound
  fi
  eend 0
}