wav_to_flac

   1 #!/usr/bin/env perl
   2
   3 #==============================================================================
   4 # wav_to_flac
   5 # File ID: 4507db62-f744-11dd-bbaa-000475e441b9
   6 #
   7 # [Description]
   8 #
   9 # Character set: UTF-8
  10 # ©opyleft 2008– Øyvind A. Holm <sunny@sunbase.org>
  11 # License: GNU General Public License version 2 or later, see end of file for
  12 # legal stuff.
  13 #==============================================================================
  14
  15 use strict;
  16 use warnings;
  17 use Getopt::Long;
  18
  19 local $| = 1;
  20
  21 our %Opt = (
  22
  23         'album' => "",
  24         'artist' => "",
  25         'force' => 0,
  26         'genre' => "",
  27         'help' => 0,
  28         'quiet' => 0,
  29         'releasedate' => "",
  30         'title' => "",
  31         'tracknumber' => "",
  32         'verbose' => 0,
  33         'version' => 0,
  34
  35 );
  36
  37 our $progname = $0;
  38 $progname =~ s/^.*\/(.*?)$/$1/;
  39 our $VERSION = '0.1.0';
  40
  41 Getopt::Long::Configure('bundling');
  42 GetOptions(
  43
  44         'album|a=s' => \$Opt{'album'},
  45         'artist|A=s' => \$Opt{'artist'},
  46         'force|f' => \$Opt{'force'},
  47         'genre|g=s' => \$Opt{'genre'},
  48         'help|h' => \$Opt{'help'},
  49         'quiet|q+' => \$Opt{'quiet'},
  50         'releasedate|r=s' => \$Opt{'releasedate'},
  51         'title|t=s' => \$Opt{'title'},
  52         'tracknumber|n=s' => \$Opt{'tracknumber'},
  53         'verbose|v+' => \$Opt{'verbose'},
  54         'version' => \$Opt{'version'},
  55
  56 ) || die("$progname: Option error. Use -h for help.\n");
  57
  58 $Opt{'verbose'} -= $Opt{'quiet'};
  59 $Opt{'help'} && usage(0);
  60 if ($Opt{'version'}) {
  61         print_version();
  62         exit(0);
  63 }
  64
  65 exit(main());
  66
  67 sub main {
  68         my $Retval = 0;
  69
  70         my $Lh = "[0-9a-fA-F]";
  71         my $v1_templ = "$Lh\{8}-$Lh\{4}-1$Lh\{3}-$Lh\{4}-$Lh\{12}";
  72
  73         my $wav_file;
  74
  75         if (defined($ARGV[0])) {
  76                 $wav_file = $ARGV[0];
  77         } else {
  78                 die("$progname: No .wav file specified\n");
  79         }
  80
  81         (!-r $wav_file) &&
  82                 die("$progname: $wav_file: Cannot read file: $!\n");
  83
  84         (-d $wav_file) &&
  85                 die("$progname: $wav_file: Is a directory\n");
  86
  87         my $out_file = $wav_file;
  88         $out_file =~ s/^(.*)\.wav$/$1.flac/i;
  89
  90         if (-e $out_file) {
  91                 if ($Opt{'force'}) {
  92                         unlink($out_file) || die("$progname: $out_file: " .
  93                                                  "Cannot delete file: $!\n");
  94                 } else {
  95                         die("$progname: $out_file: File already exists, " .
  96                             "use -f / --force to overwrite\n");
  97                 }
  98         }
  99
 100         my $flac_version = `flac --version`;
 101         $flac_version =~ s/^\s+//;
 102         $flac_version =~ s/\s+$//;
 103
 104         my @Params = "flac";
 105
 106         length($Opt{'album'}) &&
 107                 push(@Params, tag_string("ALBUM", $Opt{'album'}));
 108         length($Opt{'artist'}) &&
 109                 push(@Params, tag_string("ARTIST", $Opt{'artist'}));
 110
 111         my $esc_wav_file = shell_escape($wav_file);
 112         my $suuid_cmd = "suuid -m -t encode -w eo " .
 113                         "-c \"$progname $esc_wav_file - $flac_version\"";
 114         chomp(my $suuid_str = `$suuid_cmd`);
 115         if (!defined($suuid_str) || $suuid_str !~ /^$v1_templ$/) {
 116                 die("$progname: suuid error\n");
 117         }
 118         push(@Params, "-TENC_ID=$suuid_str");
 119         push(@Params, "-TENCODED_WITH=$flac_version");
 120
 121         length($Opt{'genre'}) &&
 122                 push(@Params, tag_string("GENRE", $Opt{'genre'}));
 123         length($Opt{'releasedate'}) &&
 124                 push(@Params, tag_string("RELEASEDATE", $Opt{'releasedate'}));
 125         length($Opt{'title'}) &&
 126                 push(@Params, tag_string("TITLE", $Opt{'title'}));
 127         length($Opt{'tracknumber'}) &&
 128                 push(@Params, tag_string("TRACKNUMBER", $Opt{'tracknumber'}));
 129
 130         push(@Params, sprintf("%s", $wav_file));
 131
 132         msg(1, join(" ", @Params));
 133         system(@Params);
 134
 135         return $Retval;
 136 }
 137
 138 sub tag_string {
 139         # Return parameter for use with flac(1)
 140         my ($Label, $Val) = @_;
 141         my $Retval = "-T$Label=$Val";
 142         return($Retval);
 143 }
 144
 145 sub shell_escape {
 146         my $Txt = shift;
 147         $Txt =~ s/"/\\"/g;
 148         $Txt =~ s/\$/\\\$/g;
 149         $Txt =~ s/!/\\!/g;
 150         $Txt =~ s/`/\\`/g;
 151         return($Txt);
 152 }
 153
 154 sub print_version {
 155         # Print program version
 156         print("$progname $VERSION\n");
 157         return;
 158 }
 159
 160 sub usage {
 161         # Send the help message to stdout
 162         my $Retval = shift;
 163
 164         if ($Opt{'verbose'}) {
 165                 print("\n");
 166                 print_version();
 167         }
 168         print(<<"END");
 169
 170 Usage: $progname [options] wav_file
 171
 172 Convert .wav to .flac .
 173
 174 Options:
 175
 176   -a X, --album X
 177     Name of music album.
 178   -A X, --artist X
 179     Name of artist/group.
 180   -f, --force
 181     Overwrite existing files.
 182   -g X, --genre X
 183     Music genre.
 184   -h, --help
 185     Show this help.
 186   -n X, --tracknumber X
 187     Track number of this song.
 188   -q, --quiet
 189     Be more quiet. Can be repeated to increase silence.
 190   -r X, --releasedate X
 191     The date the album was released.
 192   -t X, --title X
 193     Title of song.
 194   -v, --verbose
 195     Increase level of verbosity. Can be repeated.
 196   --version
 197     Print version information.
 198
 199 END
 200         exit($Retval);
 201 }
 202
 203 sub msg {
 204         # Print a status message to stderr based on verbosity level
 205         my ($verbose_level, $Txt) = @_;
 206
 207         if ($Opt{'verbose'} >= $verbose_level) {
 208                 print(STDERR "$progname: $Txt\n");
 209         }
 210         return;
 211 }
 212
 213 __END__
 214
 215 # This program is free software; you can redistribute it and/or modify it under
 216 # the terms of the GNU General Public License as published by the Free Software
 217 # Foundation; either version 2 of the License, or (at your option) any later
 218 # version.
 219 #
 220 # This program is distributed in the hope that it will be useful, but WITHOUT
 221 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 222 # FOR A PARTICULAR PURPOSE.
 223 # See the GNU General Public License for more details.
 224 #
 225 # You should have received a copy of the GNU General Public License along with
 226 # this program.
 227 # If not, see L<http://www.gnu.org/licenses/>.
 228
 229 # vim: set ts=8 sw=8 sts=8 noet fo+=w tw=79 fenc=UTF-8 :