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 use Pod::Usage;
  25
  26 use lib $FindBin::Bin;
  27
  28 require 'tags.pl';
  29 epg::flac::archive::tags->import(
  30     qw[
  31         read_tags
  32         mangle_for_file_name
  33         quote
  34         two_digits
  35     ]);
  36
  37 sub filename {
  38     my ($tracknumber, $tags) = @_;
  39     my $title = $tags->{TITLE} // die('title required');
  40     my @discnumber = @{$tags->{DISCNUMBER} // []};
  41     my @partnumber = @{$tags->{PARTNUMBER} // []};
  42     my @version = @{$tags->{VERSION} // []};
  43     join('-',
  44          (map { two_digits($_) } @discnumber),
  45          two_digits($tracknumber),
  46          mangle_for_file_name(join('TODO multi-title?', @$title)),
  47          # TODO more than one VERSION?
  48          (map { mangle_for_file_name($_) } @version),
  49          @partnumber,
  50         )
  51         . '.flac',
  52 }
  53
  54 sub main {
  55     my $input_directory = shift || pod2usage();
  56     my $fn = "$input_directory/tags";
  57     open(my $fh, '<', $fn) || die("open($fn): $!");
  58     my ($album, $tracks) = read_tags($fh);
  59     if (!defined($album->{ALBUM}) || scalar(@{$album->{ALBUM}}) != 1) {
  60         die('exactly one ALBUM tag required')
  61     }
  62     my $album_tag = $album->{ALBUM}->[0];
  63     # TODO -d support
  64     if (!defined($album->{ARTIST}) || scalar(@{$album->{ARTIST}}) != 1) {
  65         die('exactly one ARTIST tag required')
  66     }
  67     my $artist = $album->{ARTIST}->[0];
  68
  69     my $date;
  70     if (defined($album->{DATE})) {
  71         if (scalar(@{$album->{DATE}}) != 1) {
  72             die('one or zero DATE tags required')
  73         }
  74         $date = $album->{DATE}->[0];
  75     }
  76     my @discnumber = ();
  77     if (defined($album->{DISCNUMBER})) {
  78         if (scalar(@{$album->{DISCNUMBER}}) != 1) {
  79             die('one or zero DISCNUMBER tags required')
  80         }
  81         @discnumber = ($album->{DISCNUMBER}->[0]);
  82     }
  83
  84     my $dir = join('/', '..', mangle_for_file_name($artist), mangle_for_file_name($album_tag));
  85
  86     say('set -ex');
  87     say('cd ', quote($input_directory));
  88     say('mkdir -p ', quote($dir));
  89     my $tracknum = 0;
  90     for my $track (@$tracks) {
  91         $tracknum++;
  92         if (!defined($track->{TITLE}) || scalar(@{$track->{TITLE}}) < 1) {
  93             die("at least one TITLE required for track $tracknum")
  94         }
  95         $track->{ALBUM} = $album->{ALBUM};
  96         $track->{TRACKNUMBER} = [$tracknum];
  97         if (!defined($track->{ARTIST}) && defined($album->{ARTIST})) {
  98             $track->{ARTIST} = $album->{ARTIST};
  99         }
 100         if (defined($date)) {
 101             $track->{DATE} = [$date];
 102         }
 103         if (@discnumber) {
 104             $track->{DISCNUMBER} = \@discnumber;
 105         }
 106         my $title = join(' ', @{$track->{TITLE}});
 107         my $fn = join('/',
 108                       $dir,
 109                       filename(
 110                           $tracknum,
 111                           {track_tags_from_disc($album, $tracks, $tracknum)}
 112                       ),
 113             );
 114         -e $fn && die("cowardly refusing to clobber $fn");
 115         my @pictures = ('--picture', quote('3|image/jpeg|||cover.front.jpeg')); # TODO optional
 116         my $tracknum_s = two_digits($tracknum);
 117         say(join(' ',
 118                  'flac -o',
 119                  quote($fn),
 120                  '--delete-input-file',
 121                  '-V',
 122                  '--no-padding',
 123                  '--best',
 124                  @pictures,
 125                  (map {
 126                      my $name = $_;
 127                      map {
 128                          ('-T', quote($name . '=' . $_))
 129                      } @{$track->{$_}}
 130                   } sort(keys(%$track))),
 131                  "track$tracknum_s.cdda.wav"
 132             ));
 133     }
 134     say('rm tags cover.front.jpeg');
 135
 136     return 0;
 137 }
 138
 139 if (!caller) {
 140     exit(main(@ARGV))
 141 }
 142
 143 1;