#! /bin/sh
# @(#)cdda2mp3  1.5 10/02/14 Copyright 2010 J. Schilling
#
# Demo script for processing all audio tracks with a mp3 decoder
# based on a news article by Tom Kludy
#
# usage: cdda2mp3 <name prefix for all mp3 files>
#
# list_audio_tracks is a (symbolic) link to cdda2wav
# and used to generate a list of audio track numbers and start
# sectors, which in turn are used in a loop to spawn cdda2wav
# and the post processor on a track by track basis.
###########################################################################
# The contents of this file are subject to the terms of the
# Common Development and Distribution License, Version 1.0 only
# (the "License").  You may not use this file except in compliance
# with the License.
#
# See the file CDDL.Schily.txt in this distribution for details.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file CDDL.Schily.txt from this distribution.
###########################################################################

# specify the sampling program and its options
# do not specify the track option here!
CDDA2WAV=cdda2wav
CDDA2WAV_OPTS='-H -q'
CDDA2WAV_XOPTS=''

# for normal use, comment out the next line
#DEBUG='-d1'

# the post processor is fed through a pipe to avoid space waste
# specify the post processing program and its options
MP_CODER=lame
MP_CODER_HELP=--help
MP_OPTIONS=''
MP_XOPTS=''

found_fileprefix=FALSE

$MP_CODER $MP_CODER_HELP > /dev/null 2> /dev/null
if [ $? != 0 ] ; then
	echo '"'$MP_CODER'"' "not found. Install first!"
	exit 1
fi

usage() {
	echo "Usage: cdda2mp3 [dev=<SCSI-address>] [cdda2wav options] [<name prefix for all mp3 files>] [ogg options]"
}

while [ $# -gt 0 ]; do
	case "$1" in
	-help)
		usage
		exit 0
		;;

	dev=*)
		CDDA2WAV_DEV="$1"
		shift
		;;

	-*)
		if [ $found_fileprefix = TRUE ]; then
			MP_XOPTS="$MP_XOPTS $1"
		else
			CDDA2WAV_XOPTS="$CDDA2WAV_XOPTS $1"
		fi
		shift
		;;

	*)
		if [ $found_fileprefix = TRUE ]; then
			echo "Too many file type args."
			usage
			exit 1
		fi
		FILEPREFIX=${1-audiotrack}
		found_fileprefix=TRUE
		#echo "arg:  $1"
		#echo "args: $@"
		shift
		;;
	esac
done

if [ -r /etc/default/cdda2mp3 ]; then
	. /etc/default/cdda2mp3 2>/dev/null
fi
TRACKS=`$CDDA2WAV $CDDA2WAV_DEV -H -J -vtoc -N -g 2>&1 | grep '^T..:' | sed -e 's/T\(..\):.*/\1/g'`
if [ -z "$TRACKS" ]; then
	$CDDA2WAV $CDDA2WAV_DEV -H -J -vtoc -N -g
	exit 1
fi

for TRACK in $TRACKS; do
	NAME=$TRACK-$FILEPREFIX.mp3
	$CDDA2WAV $CDDA2WAV_DEV $CDDA2WAV_OPTS -t$TRACK $DEBUG $CDDA2WAV_XOPTS -Owav - | \
	$MP_CODER $MP_OPTIONS $MP_XOPTS - > $NAME 

	# check result code
	RES=$?
	if [ $RES = 0 ] ; then
		echo File '"'$NAME'"' finished successfully.
	else
		echo File '"'$NAME'"' failed \(result $RES\). Aborted. >&2
		break
	fi
done
