many2flac/many2flac

   1 #!/bin/bash
   2 # ALAC/APE to FLAC converter script
   3 # License: GPLv3
   4 # Author:  m0rph
   5 # Email:   m0rph.mailbox@gmail.com
   6
   7
   8 check_program()
   9 {
  10     type -P "$1" &>/dev/null
  11     if [ $? != 0 ]; then
  12         echo "error: unable to find $1, please install required package and try again"
  13         exit 1
  14     fi
  15 }
  16
  17
  18 print_header()
  19 {
  20     echo "many2flac converter version 1.14, (c) m0rph, 2011"
  21     echo "email: m0rph.mailbox@gmail.com"
  22     echo "supported input formats: ALAC, APE"
  23     echo ""
  24 }
  25
  26
  27 print_help()
  28 {
  29     echo "usage:   $(basename "${0}") [options] <input file(s)>"
  30     echo "options:"
  31     echo "         -h, --help         display this help and exit"
  32     echo "         -e, --erase        erase input file(s) after success conversion"
  33     echo "         -f, --force        force overwrite output file(s)"
  34     echo "         -n, --native-flac  use native flac encoder instead of ffmpeg"
  35     echo "         -r, --replay-gain  calculate ReplayGain and store in FLAC tags"
  36     echo "         -0, --fast         use compression level 0"
  37     echo "         -1                 use compression level 1"
  38     echo "         -2                 use compression level 2"
  39     echo "         -3                 use compression level 3"
  40     echo "         -4                 use compression level 4"
  41     echo "         -5                 use compression level 5"
  42     echo "         -6                 use compression level 6"
  43     echo "         -7                 use compression level 7"
  44     echo "         -8, --best         use compression level 8"
  45     echo ""
  46 }
  47
  48
  49 check_format()
  50 {
  51     format=$(ffmpeg -i "$1" 2>&1 | grep "Audio: " | cut -d ',' -f 1 | cut -d ' ' -f 8)
  52     if [[ $format != "alac" && $format != "ape" ]]; then
  53         return 1
  54     fi
  55 }
  56
  57
  58 process_file()
  59 {
  60     ffmpeg -y -i "$1" -aq $compression "$2" &> /dev/null
  61
  62     if [ $replay_gain_flag == 1 ]; then
  63         flac --force --replay-gain "$2" &> /dev/null
  64     fi
  65 }
  66
  67
  68 process_file_native()
  69 {
  70     title=$(ffmpeg -i "$1" 2>&1 | grep -i "    title           :" | cut -d ':' -f 2 | sed 's/^ *//')
  71     artist=$(ffmpeg -i "$1" 2>&1 | grep -i "    artist          :" | cut -d ':' -f 2 | sed 's/^ *//')
  72     album=$(ffmpeg -i "$1" 2>&1 | grep -i "    album           :" | cut -d ':' -f 2 | sed 's/^ *//')
  73     year=$(ffmpeg -i "$1" 2>&1 | grep -i "    date            :" | cut -d ':' -f 2 | sed 's/^ *//')
  74     track=$(ffmpeg -i "$1" 2>&1 | grep -i "    track           :" | cut -d ':' -f 2 | sed 's/^ *//')
  75     genre=$(ffmpeg -i "$1" 2>&1 | grep -i "    genre           :" | cut -d ':' -f 2 | sed 's/^ *//')
  76
  77     pipe=`mktemp -u -t many2flac.pipe.XXXXXX`
  78     mkfifo "$pipe"
  79     mplayer -ao pcm -ao pcm:file="$pipe" "$1" -noconsolecontrols &> /dev/null &
  80     if [ $replay_gain_flag == 1 ]; then
  81         flac --force "$pipe" --replay-gain -$compression          \
  82         -T title="$title" -T artist="$artist" -T album="$album"   \
  83         -T date="$year" -T tracknumber="$track" -T genre="$genre" \
  84         -o "$2" &> /dev/null
  85     else
  86         flac --force "$pipe" -$compression                        \
  87         -T title="$title" -T artist="$artist" -T album="$album"   \
  88         -T date="$year" -T tracknumber="$track" -T genre="$genre" \
  89         -o "$2" &> /dev/null
  90     fi
  91 }
  92
  93
  94 print_header
  95
  96 compression=5
  97 erase_flag=0
  98 force_flag=0
  99 native_flag=0
 100 replay_gain_flag=0
 101 files=()
 102
 103 while [[ $# > 0 ]]; do
 104     case "$1" in
 105     -h|--help)
 106         print_help
 107         exit 0
 108         ;;
 109     -e|--erase)
 110         erase_flag=1
 111         ;;
 112     -f|--force)
 113         force_flag=1
 114         ;;
 115     -n|--native-flac)
 116         native_flag=1
 117         ;;
 118     -r|--replay-gain)
 119         replay_gain_flag=1
 120         ;;
 121     -0|--fast)
 122         compression=0
 123         ;;
 124     -1)
 125         compression=1
 126         ;;
 127     -2)
 128         compression=2
 129         ;;
 130     -3)
 131         compression=3
 132         ;;
 133     -4)
 134         compression=4
 135         ;;
 136     -5)
 137         compression=5
 138         ;;
 139     -6)
 140         compression=6
 141         ;;
 142     -7)
 143         compression=7
 144         ;;
 145     -8|--best)
 146         compression=8
 147         ;;
 148     *.ape|*.m4a)
 149         if [ ! -f "$1" ]; then
 150             echo "error: unable to find \"$1\" file"
 151             echo ""
 152             exit 1
 153         fi
 154         files=("${files[@]}" "$1")
 155         ;;
 156     -?|--*)
 157         echo "error: invalid option $1"
 158         echo ""
 159         exit 1
 160         ;;
 161     *)
 162         echo "error: invalid argument: \"$1\""
 163         echo ""
 164         exit 1
 165         ;;
 166     esac
 167
 168     shift
 169 done
 170
 171
 172 if [[ ${#files[@]} == 0 ]]; then
 173     echo "error: no input files"
 174     echo ""
 175     exit 1
 176 fi
 177
 178 check_program ffmpeg
 179 check_program flac
 180 check_program mplayer
 181
 182 for input_file in "${files[@]}"; do
 183     check_format "$input_file"
 184     if [ $? != 0 ]; then
 185         echo "$input_file: unsupported format"
 186         continue
 187     fi
 188
 189     echo -n "converting $input_file"
 190     output_file=${input_file%.*}.flac
 191     if [[ -f "$output_file" && $force_flag == 0 ]]; then
 192         echo " - failure (file exists)"
 193         continue
 194     fi
 195
 196     if [ $native_flag == 1 ]; then
 197         process_file_native "$input_file" "$output_file"
 198     else
 199         process_file "$input_file" "$output_file"
 200     fi
 201
 202     if [ $? == 0 ]; then
 203         echo " - done"
 204         if [ $erase_flag == 1 ]; then
 205             rm "$input_file"
 206         fi
 207     else
 208         echo " - failure"
 209     fi
 210
 211 done