#!/sbin/runscript # $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsasound,v 1.23 2005/04/21 09:07:45 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 # # # 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 # Edited to support Linux kernel 2.5 and above as well as 2.4 # # 2004.06.02 - Jeremy Huddleston # Rewritten for better support for built-in drivers # # 2004.10.29 - Jeremy Huddleston # Cleaned up to work better for mixed builtin/module systems # # 2004.11.29 - Jeremy Huddleston # Added save option thanks to Ben Anderson # # 2005.04.21 - Jeremy Huddleston # Added restore option and oss option. # Cleaned up code to use bash builtins instead of test. alsactl=/usr/sbin/alsactl asoundcfg=/etc/asound.state aconnect=/usr/bin/aconnect alsascrdir=/etc/alsa.d opts="${opts} save" depend() { need bootmisc localmount after modules isapnp coldplug hotplug } load_modules() { # List of drivers for each card. local DRIVERS="$(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 [[ ${ENABLE_OSS_EMUL} == "yes" ]] && modprobe -c | grep -q "snd.*oss$" ; then # Test for use of OSS local OSS="$(modprobe -l | grep "snd.*oss" | sed -e "s:\/.*\/::" -e "s:\..*::")" # Add oss modules to list local i 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:\..*::")" local DRIVER 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 $? fi done sleep 1 if [[ -f /proc/asound/seq/drivers ]] ; then local SEQUENCERS="$(awk -F, '$2~/^empty$/ {print $1}' /proc/asound/seq/drivers)" local SEQUENCER 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 ${DRIVERS} do local TMP=${DRIVER##snd-} TMP=${TMP##snd_} if [[ -x "${alsascrdir}/${TMP}" ]] ; then ebegin " Running: ${alsascrdir}/${TMP}" ${alsascrdir}/${TMP} eend $? fi done if [[ ! -d /proc/asound || -n "$(grep ' no soundcards ' /proc/asound/cards)" ]] ; then eerror "ERROR: Failed to load necessary drivers" fi } unload_modules() { local LOADED_MODULES="$(/sbin/lsmod | grep -E "^snd" | awk '{print $1}')" local MODULE for MODULE in ${LOADED_MODULES} do /sbin/rmmod ${MODULE} >& /dev/null done /sbin/rmmod soundcore >& /dev/null /sbin/rmmod gameport >& /dev/null # Return success if the modules are unloaded [[ -z "$(/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/*` local 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" local alsadevs="/proc/asound/dev/* /dev/sound/* /dev/snd/*" fuser -k ${ossdevs} ${alsadevs} >& /dev/null # # remove all sequencer connections if any # [[ -f /proc/asound/seq/clients && -x ${aconnect} ]] && ${aconnect} --removeall } restore_mixer() { if [[ ${RESTORE_ON_START} == "no" ]] ; then return 0 fi ebegin "Restoring Mixer Levels" local val=0 if [[ ! -r ${asoundcfg} ]] ; then ewarn "No mixer config in ${asoundcfg}, you have to unmute your card!" elif [[ -x ${alsactl} ]] ; then local CARDS="$(cat /proc/asound/cards | awk '/: / { print $1 }')" local CARDNUM 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 ${CARDNUM} ((val=val+$?)) done else eerror -e "ERROR: Cannot find alsactl, did you forget to install media-sound/alsa-utils?" val=1 fi eend ${val} return ${val} } save() { ebegin "Storing ALSA Mixer Levels" local val=0 if [[ -x ${alsactl} ]] ; then ${alsactl} -f ${asoundcfg} store val=$? else eerror -e "ERROR: Cannot find alsactl." val=1 fi eend ${val} return ${val} } start() { if [[ -f /proc/modules ]] ; then ebegin "Loading ALSA modules" if load_modules ; then eend 0 else eend 1 return 1 fi fi if [[ ${RESTORE_ON_START} == "yes" ]]; then restore_mixer fi } 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 }