#!/bin/initsh
# Load the mixer settings and OSS compatibility for ALSA.
# (the Advanced Linux Sound Architecture)

# A function to load the ALSA mixer settings:
load_alsa_mixer() {
	if [ -r /etc/asound.state ]; then
		echo "Loading ALSA mixer settings:  /usr/sbin/alsactl restore"
		/usr/sbin/alsactl restore
	else
		echo "ALSA warning:  No mixer settings found in /etc/asound.state."
		echo "  Sound may be muted.  Use 'alsamixer' to unmute your sound card,"
		echo "  and then 'alsactl store' to save the default ALSA mixer settings"
		echo "  to be loaded at boot."
	fi
}

# A function to load the ALSA OSS compat modules:
load_alsa_oss_modules() {
	if [ ! `/bin/cat /proc/modules | /bin/tr _ - | /bin/grep -wq snd_pcm_oss` ] ; then
		echo "Loading OSS compatibility modules for ALSA."
		/sbin/modprobe snd-pcm-oss
		/sbin/modprobe snd-mixer-oss
		/sbin/modprobe snd-seq-oss
	fi
}

# If hotplug or something else has loaded the ALSA modules, then
# simply load the mixer settings and make sure the OSS compat
# modules are loaded:
if [ -d /proc/asound ]; then
	load_alsa_mixer
	load_alsa_oss_modules
else
	# If there are ALSA modules defined in /etc/modules.conf, but
	# ALSA is not yet loaded, then load the modules now:
	KVERS=`uname -r`
	echo "Attempting to Load ALSA kernel modules."
	for DRIVER in `grep -E "snd-" /lib/modules/$KVERS/module.alias |cut -f3 -d` ; do
		echo "Loading ALSA kernel module: $DRIVER"
		/sbin/modprobe $DRIVER 2> /dev/null
	done
	
	# If ALSA is now up, then load the mixer settings and OSS modules:
	if [ -d /proc/asound ]; then
		load_alsa_mixer
		load_alsa_oss_modules
	fi
fi