diplodocus.org Git - flac-archive/blob - flac2mp3

   1 #!/usr/local/bin/perl
   2
   3 =head1 NAME
   4
   5 B<flac2mp3> - transcode FLAC file to MP3 files
   6
   7 =head1 SYNOPSIS
   8
   9 B<flac2mp3> [B<--lame-options> I<lame-options>] [B<-q>] [B<-v>] I<file> [...]
  10
  11 =head1 DESCRIPTION
  12
  13 B<flac2mp3> transcodes the FLAC files I<file> to MP3 files.  I<file>
  14 may be the kind of FLAC file B<fa-flacd> generates.  That is, it
  15 contains a cue sheet, one TITLE tag per track listed therein, and
  16 ARTIST, ALBUM, and DATE tags.
  17
  18 Note that lame is retarded, and parses B<LANG> directly itself!  So, in order
  19 for it to transcode textual tags, you must specify the encoding in LANG, e.g.
  20 LANG=en_US.utf-8
  21
  22 =head1 OPTIONS
  23
  24 =over 4
  25
  26 =item B<--lame-options> I<lame-options>
  27
  28 Pass I<lame-options> to B<lame>.  This ends up being passed to the
  29 shell, so feel free to take advantage of that.  You'll almost
  30 certainly have to put I<lame-options> in single quotes.
  31
  32 =item B<-q> [B<--quiet>]
  33
  34 Suppress status information.  This option is passed along to B<flac>
  35 and B<lame>.
  36
  37 =item B<-v> [B<--verbose>]
  38
  39 Print diagnostic information.  This option is passed along to B<flac>
  40 and B<lame>.
  41
  42 =back
  43
  44 =head1 AUTHORS
  45
  46 Written by Eric Gillespie <epg@pretzelnet.org>.
  47
  48 =cut
  49
  50 package epg::flac::archive::mp3;
  51
  52 use v5.12;
  53 use warnings;
  54
  55 use FindBin;
  56
  57 use lib $FindBin::Bin;
  58
  59 require 'tags.pl';
  60 epg::flac::archive::tags->import(
  61     qw[
  62       track_tags
  63       read_tags_metaflac
  64       mangle_for_file_name
  65       quote
  66       two_digits
  67     ]
  68 );
  69
  70 sub flac2mp3 {
  71     my $mp3 = shift;
  72     my $flac = shift;
  73     my $tags = shift;
  74
  75     # This is an old TODO; what's wrong with --ty ?
  76     # TODO: Look at TDOR, TDRL, TDRC for date.
  77     say(
  78         join(
  79             ' ',
  80             'flac',
  81             '-cd',
  82             quote($flac),
  83             '|',
  84             'lame',
  85             '--id3v2-only',
  86             '--id3v2-latin1',
  87             '--pad-id3v2-size', 0,
  88             '--preset standard',
  89             '--ta',
  90             quote($tags->{artist}),
  91             '--tl',
  92             quote($tags->{album}),
  93             '--tn',
  94             quote($tags->{tracknumber}),
  95             '--tt',
  96             quote($tags->{title}),
  97             '--ty',
  98             quote($tags->{date}),
  99             '$pic_options',
 100
 101             #(map { ('--tv', quote("TPE2=$_")) } @{$albumartist}),
 102             (map { ('--tv', quote("TPOS=$_")) } @{$tags->{discnumber}}),
 103             '-',
 104             quote($mp3),
 105         )
 106     );
 107 }
 108
 109 sub filename {
 110     my $tags = shift;
 111     mangle_for_file_name(
 112         join(' ',
 113             @{$tags->{ARTIST}},
 114             @{$tags->{ALBUM}},
 115             (map { two_digits($_) } @{$tags->{DISCNUMBER} // []}),
 116             (map { two_digits($_) } @{$tags->{TRACKNUMBER} // []}),
 117             @{$tags->{TITLE}},
 118             @{$tags->{VERSION} // []},
 119             @{$tags->{PARTNUMBER} // []},
 120         )
 121     ) . '.mp3';
 122 }
 123
 124 sub main {
 125     for my $flac (@_) {
 126         say('metaflac --export-picture-to=flac2mp3.cover.$$ ',
 127             quote($flac), ' && pic_options="--ti flac2mp3.cover.$$"');
 128
 129         # TODO multi-track
 130         my ($tags) = read_tags_metaflac($flac);
 131         flac2mp3(filename($tags), $flac, {track_tags($tags)});
 132         say('unset pic_options');
 133     }
 134     say('rm -f flac2mp3.cover.$$');
 135
 136     return 0;
 137 }
 138
 139 if (!caller) {
 140     exit(main(@ARGV));
 141 }
 142
 143 1;