#!/bin/sh
#
# Script	- real_to_mp3.sh
#
# Description	- Record a Real Audio stream and convert to mp3 using mplayer and lame
#
# Author	- Alex Dyas, inspired by bedouin (http://www.macosxhints.com/article.php?story=20050130184054216)
#
# Version	- 1.2 - Small change to mplayer command line (-ao)
#		  1.1 - Fixed problem with unprintable characters in some HTTP replies messing up stream URL
#		  1.0 - First release
#
# Note		- Whilst every effort has been made to ensure that this script does no damage, the author takes
#		  no responsibility whatsoever as to any damages resulting in its use.
#
# -----------------------------------------------------------------------------------------------------------------

TEXTFILE=real_to_mp3.tmp
URL=${1}
FILENAME=${2}

# -----------------------------------------------------------------------------------------------------------------
usage()
{
	echo Usage :
	echo "`basename ${0}` <URL> <name>"
	echo "eg `basename ${0}` http://www.bbc.co.uk/radio4/history/inourtime/ram/inourtime.ram \"BBC IOT The Physics of Reality\""
	echo
	exit
}
# -----------------------------------------------------------------------------------------------------------------

if [ -z "${URL}" ]
then
{
	usage
}
elif [ -z "${FILENAME}" ]
then
{
	usage
}
fi

# Find the Real Audio Stream from the URL
echo Figure out Read Audio Stream
STREAM=`curl "${URL}" | tr -cd "[:print:]" | grep rtsp`

# Download
echo "Downloading stream...."
mplayer -noframedrop -dumpfile "${FILENAME}.rm" -dumpstream ${STREAM}

# Convert to wav and grab information text
echo "rm->wav"
mplayer "${FILENAME}.rm" -ao pcm:file="${FILENAME}.wav" -vc dummy -vo null > ${TEXTFILE}

# Set mp3 tag information
#TITLE=`grep name ${TEXTFILE} | sed 's/ name: //'`
TITLE="${FILENAME}"
AUTHOR=`grep author ${TEXTFILE} | sed 's/ author: //'`
ALBUM="Streaming Audio"

# Convert to mp3
echo "wav->mp3"
lame -m m "${FILENAME}.wav" "${FILENAME}.mp3" --tt "${TITLE}" --ta "${AUTHOR}" --tl "${ALBUM}"

# Tidy up
echo Deleting working files...
if [ -f "${FILENAME}.rm" ]; then rm "${FILENAME}.rm"; fi
if [ -f "${FILENAME}.wav" ]; then rm "${FILENAME}.wav"; fi
if [ -f "${TEXTFILE}" ]; then rm "${TEXTFILE}"; fi
echo Done.