diplodocus.org Git - flac-archive/blob - fa-encode

   1 #!/usr/local/bin/perl
   2
   3 =head1 NAME
   4
   5 B<fa-encode> - encode WAV files to FLAC
   6
   7 =head1 SYNOPSIS
   8
   9 B<fa-encode> [B<-d> I<artist-directory>] B<input-directory>
  10
  11 I<artist-directory> defaults to the album B<ARTIST> in the tags file; one of
  12 these is required.
  13
  14 TODO:  implement B<-d>
  15
  16 =cut
  17
  18 package epg::flac::archive::encode;
  19
  20 use v5.12;
  21 use warnings;
  22
  23 use FindBin;
  24
  25 require "$FindBin::Bin/tags.p";
  26 epg::flac::archive::tags->import(
  27     qw[
  28         read_tags
  29         mangle_for_file_name
  30         quote
  31     ]);
  32
  33 sub main {
  34     my $input_directory = shift;
  35     my $fn = "$input_directory/tags";
  36     open(my $fh, '<', $fn) || die("open($fn): $!");
  37     my ($album, $tracks) = read_tags($fh);
  38     if (!defined($album->{ALBUM}) || scalar(@{$album->{ALBUM}}) != 1) {
  39         die('exactly one ALBUM tag required')
  40     }
  41     my $album_tag = $album->{ALBUM}->[0];
  42     # TODO -d support
  43     if (!defined($album->{ARTIST}) || scalar(@{$album->{ARTIST}}) != 1) {
  44         die('exactly one ARTIST tag required')
  45     }
  46     my $artist = $album->{ARTIST}->[0];
  47
  48     my $date;
  49     if (defined($album->{DATE})) {
  50         if (scalar(@{$album->{DATE}}) != 1) {
  51             die('one or zero DATE tags required')
  52         }
  53         $date = $album->{DATE}->[0];
  54     }
  55     my @discnumber = ();
  56     if (defined($album->{DISCNUMBER})) {
  57         if (scalar(@{$album->{DISCNUMBER}}) != 1) {
  58             die('one or zero DISCNUMBER tags required')
  59         }
  60         @discnumber = ($album->{DISCNUMBER}->[0]);
  61     }
  62
  63     my $dir = join('/', '..', mangle_for_file_name($artist), mangle_for_file_name($album_tag));
  64
  65     say('set -ex');
  66     say('mkdir -p ', quote($dir));
  67     my $tracknum = 0;
  68     for my $track (@$tracks) {
  69         $tracknum++;
  70         if (!defined($track->{TITLE}) || scalar(@{$track->{TITLE}}) < 1) {
  71             die("at least one TITLE required for track $tracknum")
  72         }
  73         $track->{ALBUM} = $album->{ALBUM};
  74         $track->{TRACKNUMBER} = [$tracknum];
  75         if (!defined($track->{ARTIST}) && defined($album->{ARTIST})) {
  76             $track->{ARTIST} = $album->{ARTIST};
  77         }
  78         if (defined($date)) {
  79             $track->{DATE} = [$date];
  80         }
  81         if (@discnumber) {
  82             $track->{DISCNUMBER} = \@discnumber;
  83         }
  84         my $title = join(' ', @{$track->{TITLE}});
  85         my $tracknum_s = sprintf('%02d', $tracknum);
  86         my $fn = join('/',
  87                       $dir,
  88                       join('_',
  89                            (map { sprintf('%02d', $_) } @discnumber),
  90                            $tracknum_s,
  91                            mangle_for_file_name($title) . '.flac',
  92                       ),
  93             );
  94         -e $fn && die("cowardly refusing to clobber $fn");
  95         my @pictures = ('--picture', quote('3|image/jpeg|||cover.front.jpeg')); # TODO optional
  96         say(join(' ',
  97                  'flac -o',
  98                  quote($fn),
  99                  '--delete-input-file',
 100                  '-V',
 101                  '--no-padding',
 102                  '--best',
 103                  @pictures,
 104                  (map {
 105                      my $name = $_;
 106                      map {
 107                          ('-T', quote($name . '=' . $_))
 108                      } @{$track->{$_}}
 109                   } sort(keys(%$track))),
 110                  "track$tracknum_s.cdda.wav"
 111             ));
 112     }
 113     say('rm tags cover.front.jpeg');
 114
 115     return 0;
 116 }
 117
 118 if (!caller) {
 119     exit(main(@ARGV))
 120 }
 121
 122 1;