wav_to_mp3

   1 #!/usr/bin/env bash
   2
   3 #=======================================================================
   4 # wav_to_mp3
   5 # File ID: ffabc804-0665-11e3-a941-a088b4ddef28
   6 # Convert .wav files to .mp3
   7 # [Description]
   8 #
   9 # Author: Øyvind A. Holm <sunny@sunbase.org>
  10 # License: GNU General Public License version 2 or later.
  11 #=======================================================================
  12
  13 progname=wav_to_mp3
  14 VERSION=0.1.0
  15
  16 ARGS="$(getopt -o "\
  17 h\
  18 q\
  19 v\
  20 " -l "\
  21 help,\
  22 quiet,\
  23 verbose,\
  24 version,\
  25 " -n "$progname" -- "$@")"
  26 test "$?" = "0" || exit 1
  27 eval set -- "$ARGS"
  28
  29 opt_help=0
  30 opt_quiet=0
  31 opt_verbose=0
  32 while :; do
  33     case "$1" in
  34         -h|--help) opt_help=1; shift ;;
  35         -q|--quiet) opt_quiet=$(($opt_quiet + 1)); shift ;;
  36         -v|--verbose) opt_verbose=$(($opt_verbose + 1)); shift ;;
  37         --version) echo $progname $VERSION; exit 0 ;;
  38         --) shift; break ;;
  39         *) echo $progname: Internal error >&2; exit 1 ;;
  40     esac
  41 done
  42 opt_verbose=$(($opt_verbose - $opt_quiet))
  43
  44 if test "$opt_help" = "1" -o -z "$1"; then
  45     test $opt_verbose -gt 0 && { echo; echo $progname $VERSION; }
  46     cat <<END
  47
  48 Usage: $progname [options] wav_file [...]
  49
  50 Options:
  51
  52   -h, --help
  53     Show this help.
  54   -q, --quiet
  55     Be more quiet. Can be repeated to increase silence.
  56   -v, --verbose
  57     Increase level of verbosity. Can be repeated.
  58   --version
  59     Print version information.
  60
  61 END
  62     if test -n "$1"; then
  63         exit 0
  64     else
  65         exit 1
  66     fi
  67 fi
  68
  69 tmpuuid=$(suuid -m -t c_wav_to_mp3 -wa -c "Starting conversion")
  70 test -z "$tmpuuid" && { echo "$progname: Broken suuid(1)" >&2; exit 1; }
  71 for curr in "$@"; do
  72     echo
  73     echo ======== $(ls -l "$curr")
  74     noext=$(basename "$curr" .wav)
  75     wavfile="$noext.wav"
  76     mp3file="$noext.mp3"
  77     test -e "$mp3file" && { echo $mp3file: File already exists >&2; continue; }
  78     wavid=$(finduuid "$wavfile")
  79     wavid_str=
  80     test -n "$wavid" && wavid_str=" (File ID $wavid)"
  81     lame -h --tc $(suuid -m -t encode,c_wav_to_mp3 -wa -c "Converting $wavfile$wavid_str to mp3") "$wavfile" "$mp3file"
  82 done