#
# $Id$
#
=head1 NAME
AudioFile::Info::MP3::Tag - Perl extension to get info from MP3 files.
=head1 DESCRIPTION
This is a plugin for AudioFile::Info which uses MP3::Tag to get or set
data about MP3 files.
See L<AudioFile::Info> for more details.
=cut
package AudioFile::Info::MP3::Tag;
use 5.006;
use strict;
use warnings;
use Carp;
use MP3::Tag;
our $VERSION = '1.06';
my %data = (artist => ['artist', 'TPE1'],
title => ['song', 'TIT2'],
album => ['album', 'TALB'],
track => ['track', 'TRCK'],
year => ['year', 'TYER'],
genre => ['genre', 'TCON']);
sub new {
my $class = shift;
my $file = shift;
my $obj = MP3::Tag->new($file);
$obj->get_tags;
bless { obj => $obj }, $class;
}
sub DESTROY {
my $file = $_[0]->{obj}{ID3v2}{mp3} || $_[0]->{obj}{ID3v2}{mp3};
$file->close if defined $file;
}
sub AUTOLOAD {
our $AUTOLOAD;
my ($pkg, $sub) = $AUTOLOAD =~ /(.+)::(\w+)/;
die "Invalid attribute $sub" unless exists $data{$sub};
if ($_[1]) {
$_[0]->{obj}->new_tag('ID3v1') unless $_[0]->{obj}{ID3v1};
$_[0]->{obj}->new_tag('ID3v2') unless $_[0]->{obj}{ID3v2};
if (my $frame = $_[0]->{obj}{ID3v1}) {
my $tag = $data{$sub}[0];
$frame->$tag($_[1]);
$frame->write_tag;
}
if (my $frame = $_[0]->{obj}{ID3v2}) {
my $tag = $data{$sub}[1];
if (exists $frame->get_frame_ids->{$tag}) {
$frame->change_frame($tag, $_[1]);
} else {
$frame->add_frame($tag, $_[1]);
}
$frame->write_tag;
}
}
if ($_[0]->{obj}{ID3v2}) {
return ($_[0]->{obj}{ID3v2}->get_frame($data{$sub}[1]))[0];
}
if ($_[0]->{obj}{ID3v1}) {
my $tag = $data{$sub}[0];
return $_[0]->{obj}{ID3v1}->$tag;
}
return;
}
1;
__END__
=head1 METHODS
=head2 new
Creates a new object of class AudioFile::Info::MP3::Tag. Usually called
by AudioFile::Info::new.
=head1 AUTHOR
Dave Cross, E<lt>dave@dave.org.ukE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2003-2006 by Dave Cross
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut