#!/bin/bash
###########
#
# WM2MP3 - Wma/Mpc to mp3 converter
# ------------------------------
# by Old Sparky - oldsparky@bmlabs.net
#
# - Description: this script allow you to convert your wma or mpc files to
#     mp3 and clean filename from space and boring special chars. Usefull if 
#     your cheap player read only this audio format.
#
# - Changelog:
#     01/10/2006 first version;
#     15/10/2006 added some control routines;
#     24/10/2006 fixed some minor bugs;
#     30/12/2006 added mpc format conversion and some control routines (mplayer
#                has some troubles with libmpcdec at this time)
#
# - LICENSE: WM2MP3 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, 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.
#
###############################################################################
 
# vars
bitrate="192"         # MP3 bitrate in Kbit
 
# some controls
if ! MPLAYER=`which mplayer`
then
  echo "ERR: mplayer binary not found" 
  exit 1
fi
if ! MPC123=`which mpc123`
then
  echo "ERR: mpc123 binary not found"
  exit 1
fi
if ! LAME=`which lame` 
then
  echo "ERR: lame binary not found"
  exit 1
fi
if ! SED=`which sed`
then
  echo "ERR: sed binary not found"
  exit 1
fi
 
src="$PWD"
dest="$PWD"
[ -d "$1" ] && src="$1"
[ -d "$2" ] && dest="$2"
if ! [ -w "$dest" ]
then
  echo "WRN: $dest is not writable, using /tmp instead."
  dest="/tmp"
fi
 
if [ `ls -l $src | grep -ce "\.[WwMm][MmPp][AaCc]"` -le 0 ]
then
  echo "ERR: There aren't WMA or MPC files in $src."
  exit 1
  fi
 
# encode with LAME from wav dump file
for fname in $src/*.[WwMm][MmPp][AaCc]
do 
  if [ `echo $fname | grep -ce "\.[Ww][Mm][Aa]"` -eq 1 ]
  then
    $MPLAYER -vo null -vc dummy -af resample=44100 -ao pcm:file=/tmp/audiodump.wav "$fname" || exit 1
    extens=".wma";
  elif [ `echo $fname | grep -ce "\.[Mm][Pp][Cc]"` -eq 1 ]
  then
    $MPC123 -w /tmp/audiodump.wav "$fname" || exit 1
    extens=".mpc";
      fi
        fname_clear=`echo $fname|$SED 's/ /_/g'|$SED 's/_-_/-/g'|$SED 's/[+{;"\=?~()<>&*|$]//g'|$SED 's/__/_/g'`
  $LAME -b $bitrate -o -m s /tmp/audiodump.wav "$dest/`basename "$fname_clear" "$extens"`.mp3" || exit 1
done
 
rm -rf /tmp/audiodump.wav
exit 0
 
#EOF