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#!/sbin/runscript
# $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsasound,v 1.22 2005/01/31 21:44:54 eradicator 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
# ChangeLog:
#
# 2003.07.29 - John Mylchreest <johnm@gentoo.org>
# Edited to support Linux kernel 2.5 and above as well as 2.4
#
# 2004.06.02 - Jeremy Huddleston <eradicator@gentoo.org>
# Rewritten for better support for built-in drivers
#
# 2004.10.29 - Jeremy Huddleston <eradicator@gentoo.org>
# Cleaned up to work better for mixed builtin/module systems
#
# 2004.11.29 - Jeremy Huddleston <eradicator@gentoo.org>
# Added save option thanks to Ben Anderson <roothorick@new.rr.com>
alsactl=/usr/sbin/alsactl
asoundcfg=/etc/asound.state
aconnect=/usr/bin/aconnect
alsascrdir=/etc/alsa.d
opts="${opts} save"
depend() {
need bootmisc localmount
after modules isapnp coldplug hotplug
}
load_modules() {
# List of drivers for each card.
DRIVERS="$(modprobe -c | grep -E "^[[:space:]]*alias[[:space:]]+snd-card-[[:digit:]]" | awk '{print $2}')"
# Fall back on the automated aliases if we don't have ALSA configured properly...
if [ -z "${DRIVERS}" ] && ! ([ -d /proc/asound ] && [ -z "$(grep ' no soundcards ' /proc/asound/cards)" ]); then
ewarn "Could not detect custom ALSA settings. Loading all detected alsa drivers."
DRIVERS="$(modprobe -c | grep pci: | awk '{ print $3 }' | grep snd.* | sort | uniq)"
[ -z "${DRIVERS}" ] && eerror "Unable to find any ALSA drivers. Have you compiled alsa-drivers correctly?"
fi
if modprobe -c | grep -q "snd.*oss$" ; then
# Test for use of OSS
OSS="$(modprobe -l | grep "snd.*oss" | sed -e "s:\/.*\/::" -e "s:\..*::")"
# Add oss modules to list
for i in ${OSS}
do
DRIVERS="${DRIVERS} ${i}"
done
fi
# We want to ensure snd-seq is loaded as it is needed for things like
# timidity even if we don't use a real sequencer.
DRIVERS="${DRIVERS} $(modprobe -l | grep "snd.seq\." | sed -e "s:\/.*\/::" -e "s:\..*::")"
# We want to ensure snd-ioctl32 is loaded as it is needed for 32bit
# compatibility
DRIVERS="${DRIVERS} $(modprobe -l | grep "snd.ioctl32\." | sed -e "s:\/.*\/::" -e "s:\..*::")"
for DRIVER in ${DRIVERS}
do
if [ ! "${DRIVER}" = off ] &&
[ -z `cut -d' ' -f1 /proc/modules | egrep "^${DRIVER}\$"` ] &&
[ -z `cut -d' ' -f1 /proc/modules | egrep "^${DRIVER//-/_}\$"` ]; then
ebegin " Loading: ${DRIVER}"
/sbin/modprobe ${DRIVER}
eend $?
fi
done
sleep 1
if [ -f /proc/asound/seq/drivers ] ; then
SEQUENCERS="$(awk -F, '$2~/^empty$/ {print $1}' /proc/asound/seq/drivers)"
for SEQUENCER in ${SEQUENCERS}
do
if [ -z `cut -d' ' -f1 /proc/modules | egrep "^${SEQUENCER}\$"` ] &&
[ -z `cut -d' ' -f1 /proc/modules | egrep "^${SEQUENCER//-/_}\$"` ]; then
ebegin " Loading: ${SEQUENCER}"
/sbin/modprobe ${SEQUENCER}
eend $?
fi
done
fi
for DRIVER in ${DRIVERS}
do
TMP=${DRIVER##snd-}
TMP=${TMP##snd_}
if [ -x "${alsascrdir}/${TMP}" ]; then
ebegin " Running: ${alsascrdir}/${TMP}"
${alsascrdir}/${TMP}
eend $?
fi
done
if [ ! -d /proc/asound ] || [ ! -z "$(grep ' no soundcards ' /proc/asound/cards)" ]; then
eerror "ERROR: Failed to load necessary drivers"
fi
}
unload_modules() {
LOADED_MODULES="$(/sbin/lsmod | grep -E "^snd" | awk '{print $1}')"
for MODULE in ${LOADED_MODULES}
do
/sbin/rmmod ${MODULE} >& /dev/null
done
/sbin/rmmod soundcore >& /dev/null
/sbin/rmmod gameport >& /dev/null
# Return success if the modules are unloaded
test -z "$(/sbin/lsmod | grep -E "^snd" | awk '{print $1}')"
}
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/* /dev/sound/* /dev/snd/*"
fuser -k $ossdevs $alsadevs 2> /dev/null 1>/dev/null
#
# remove all sequencer connections if any
#
[ -f /proc/asound/seq/clients -a -x $aconnect ] && $aconnect --removeall
}
restore_mixer() {
if [ ! -r $asoundcfg ]; then
ewarn "No mixer config in $asoundcfg, you have to unmute your card!"
elif [ -x $alsactl ]; then
CARDS="$(cat /proc/asound/cards | awk '/: / { print $1 }')"
for CARDNUM in ${CARDS}
do
[ -e /dev/snd/controlC0 ] || sleep 2
[ -e /dev/snd/controlC0 ] || sleep 2
[ -e /dev/snd/controlC0 ] || sleep 2
[ -e /dev/snd/controlC0 ] || sleep 2
$alsactl -f $asoundcfg restore ${CARDNUM}
done
else
eerror -e "ERROR: Cannot find alsactl, did you forget to install media-sound/alsa-utils?"
return 1
fi
return 0
}
save() {
ebegin "Storing ALSA Mixer Levels"
if [ -x $alsactl ]; then
$alsactl -f $asoundcfg store
val=$?
eend $val
return $val
else
eerror -e "ERROR: Cannot find alsactl."
eend 1
return 1
fi
}
start() {
if [ -f /proc/modules ]; then
ebegin "Loading ALSA modules"
if load_modules; then
eend 0
else
eend 1
return 1
fi
fi
ebegin "Restoring Mixer Levels"
restore_mixer
eend $?
}
stop() {
if [ ! -d /proc/asound ] ; then
eerror "ALSA is not loaded"
return 0
fi
if [ "${SAVE_ON_STOP}" = "yes" ]; then
save
fi
ebegin "Unloading ALSA"
terminate
eend 0
if [ -f /proc/modules ]; then
ebegin "Unloading ALSA modules"
if unload_modules; then
eend 0
else
eend 1
fi
fi
}
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