#!/bin/bash -e
#
#     audigy-script  --  A setup script
#
#     Author:        Jonathan Boler (tenpin22@blueyonder.co.uk)  Originally: Daniel Bertrand
#     Last Updates:  
#                    Daniel Robbins, 07th March 2003 (drobbins@gentoo.org)
#                      Set tone control defaults to 50/100 (neutral)
#					 Jonathan Boler, 11th October 2002
#     Version:       0.31
#
# Optional argument processing:
# This script takes arguments which can override the settings in the
# config file. The following flags are supported:
#
# -d [yes|no]	use the digital output
# -t [yes|no]	enable the tone controls
# -3 [yes|no]	enable ac3 passthrough
# -i [yes|no]	enable livedrive ir

# Default location of programs:
BASE_PATH=/usr
DSPPATH=$BASE_PATH/share/emu10k1
AUMIX=`which aumix`

# To use something other than /dev/dsp
# example "-D /dev/dsp1"
DSPDEV=""

# To use something other than /dev/dsp
# example "-M /dev/mixer1"
MIXERDEV=""

DSPMGR=$BASE_PATH/bin/emu-dspmgr $DSPDEV $MIXERDEV

CONFIG=$BASE_PATH/bin/emu-config $DSPDEV $MIXERDEV

SAVEARGS="$@"

load(){

# Source configurations
  . /etc/emu10k1.conf

# Pick up any command line overrides
while getopts d:t:3:i: OPT $SAVEARGS; do
	case "$OPT" in
	d)
		USE_DIGITAL_OUTPUT=$OPTARG
		;;
	t)
		ENABLE_TONE_CONTROL=$OPTARG
		;;
	3)
		AC3PASSTHROUGH=$OPTARG
		;;
	i)
		ENABLE_LIVEDRIVE_IR=$OPTARG
		;;
	*)
		exit 1
		;;
	esac
	shift 2
done

# Set some variables
if [ "$USE_DIGITAL_OUTPUT" = yes ]; then
    FRONT="Dig Front"
    CENTER="Dig Center"
    SUB="Dig LFE"
    REAR="Dig rear"
    CTR_SUB="Dig ctr/sub"
else
    FRONT="Front"
    CENTER="Center"
    SUB="Sub"
    REAR="Rear"
    CTR_SUB="Ctr/sub"
fi

# Functions to enable inputs and volume controls

enable_volume(){
    INPUT=$1
    VOLUME=$2

    $DSPMGR -p"$VOLUME Vol" -l"$INPUT" -f$DSPPATH/vol_2.bin -c"Vol_L" -m"${VOLUME}_l" -c"Vol_R" -m"${VOLUME}_r"
}

enable_with_vol(){
    INPUT=$1
    VOLUME=$2

    $DSPMGR  -a"$INPUT:$FRONT" -a"$INPUT:$REAR" -a"$INPUT:Headphones"
    $DSPMGR -p"$VOLUME Vol" -l"$INPUT" -f$DSPPATH/vol_2.bin -c"Vol_L" -m"${VOLUME}_l" -c"Vol_R" -m"${VOLUME}_r"
}


# Start by clearing everything and stopping the FX8010
$DSPMGR -x -z


# Enable inputs (route them to the outputs) and volume controls

# Pcm can be up to 6 channels

$DSPMGR -a"Pcm:$FRONT" -a"Pcm Rear:$REAR" -a"Pcm ctr/sub:$CTR_SUB" -a"Pcm:Headphones"
$DSPMGR -l"pcm" -l"Pcm Rear" -l"Pcm Ctr/sub" -f$DSPPATH/vol_pcm.bin -c"Vol_L" -m"pcm_l" -c"Vol_R" -m"pcm_r"

# Other inputs are only stereo

if [ "$ENABLE_CD_Spdif" = yes ]; then
     enable_with_vol "CD-Spdif" "dig1"
fi

if [ "$ENABLE_OPTICAL_SPDIF" = yes ]; then
    enable_with_vol "Opt. Spdif" "dig2"
fi

if [ "$ENABLE_LINE2_MIC2" = yes ]; then
    enable_with_vol "Line2/Mic2" "line2"
fi

if [ "$ENABLE_RCA_SPDIF" = yes ]; then
    enable_with_vol "RCA Spdif" "dig3"
fi

if [ "$ENABLE_RCA_AUX" = yes ]; then
    enable_with_vol  "RCA Aux2" "line3"
fi


# Analog-in is already routed to the analog front output
# So we route it only to the remaining outputs

$DSPMGR  -a"Analog:Recording" -a"Analog:Headphones"

if [ "$USE_DIGITAL_OUTPUT" = yes ]; then
    $DSPMGR -a"Analog:Dig Front"
fi

# Output volume controls:
enable_volume "$FRONT" "vol"
enable_volume "$REAR" "ogain"
enable_volume "$CTR_SUB" "igain"


if [ "$ENABLE_TONE_CONTROL" = yes ] ; then

    TONE=tone.bin

    $DSPMGR -l"$FRONT L" -f$DSPPATH/$TONE -cbass -mbass -ctreble -mtreble
    # The next 3 'inherit' the oss control of the above line:
    $DSPMGR -l"$FRONT R" -f$DSPPATH/$TONE
    $DSPMGR -l"$REAR R" -f$DSPPATH/$TONE
    $DSPMGR -l"$REAR L" -f$DSPPATH/$TONE

	if [ -x $AUMIX ] ; then
		# drobbins is an audiophile and has a problem with auto-bass and
		# auto-treble. So these have been changed from 68 to 50.
    	$AUMIX -t 50 
    	$AUMIX -b 50
	fi
fi


# Need to toggle third output into digital mode

if [ "$USE_DIGITAL_OUTPUT" = yes ] ; then
	$CONFIG -d
fi

# See if we should enable IR

if [ "$ENABLE_LIVEDRIVE_IR" = yes ] ; then
     $CONFIG -i
fi

# for digital output we can do ac3passthrough
# this patch must be last in the signal chain
if [ "$USE_DIGITAL_OUTPUT" = yes ]; then
    if [ "$AC3PASSTHROUGH" = yes ] ; then
	$DSPMGR -l"dig front" -F"$DSPPATH/ac3pass-audigy.bin"
    fi
fi


# Restart the FX8010
$DSPMGR -y

}

case "$1" in

	restore | restart)
        load
		# Load mixer settings
		$AUMIX -f /etc/aumixrc -L  >/dev/null 2>&1 || :
        ;;
    save | stop)
		# Save mixer settings
		$AUMIX -f /etc/aumixrc -S   >/dev/null 2>&1 || :
		;;
    *)
		load
esac