MP3::Tag::ID3v2-Data - get_frame() data format and supported frames
\$mp3 = MP3::Tag->new(\$filename); \$mp3->get_tags(); \$id3v2 = \$mp3->{ID3v2} if exists \$mp3->{id3v2}; (\$info, \$long) = \$id3v2->get_frame(\$id); # or (\$info, \$long) = \$id3v2->get_frame(\$id, 'raw');
This document describes how to use the results of the get_frame function of MP3::Tag::ID3v2, thus the data format of frames retrieved with MP3::Tag::ID3v2::get_frame().
It contains also a list of all supported ID3v2-Frames.
(\$info, \$long) = \$id3v2->get_frame(\$id); # or (\$info, \$long) = \$id3v2->get_frame(\$id, 'raw'); \$id has to be a name of a frame like "APIC". See also L<get_frame()|MP3::Tag::ID3v2>. The names of all frames found in a tag can be retrieved with the L<get_frame_ids()|MP3::Tag::ID3v2> function.
In the ID3v2.3 specifications $#frames frames are defined, which can contain very different information. That means that get_frame returns the information of different frames also in different ways.
A lot of the tags contain only a text string and encoding information. If you call (\$info, \$long) = \$id3v2->get_frame(\$id) for such a frame, \$info will contain the text string and \$long will contain the english name of the frame.
Example: get_frame("TIT2"); # returns
("Birdhouse In Your Soul", "Title/songname/content description")
For more complex frames the returned \$info is a reference to a hash, where each entry of the hash decribes a part of the information found in the frame. The key of a hash entry contains the name of this part, the according value contains the information itself.
Example: get_frame("APIC"); # returns
( { "Description" => "Flood", "MIME Type" => "/image/jpeg", "Picture Type" => "Cover (front)", "_Data" => "..data of jpeg picture (binary).." }, "Attached Picture");
Some frames are not supported at the moment, ie the data found in the frame is not returned in a descriptive way. But you can read the data of this frames (and also of all other frames too) in raw mode. Then the complete data field of the frame is returned, without any modifications. This means that the returned data will be almost binary data.
Example: get_frame("TIT2", 'raw'); # returns
("\\x00Birdhouse In Your Soul", "Title/songname/content description")
INTRO
@frames = keys %MP3::Tag::ID3v2::long_names; @other = (); @text = (); @complex = ();
foreach (@frames) { $data = MP3::Tag::ID3v2::what_data("", $_); if (ref $data) { if ($#$data == 0) { push @text, $_; } else { push @complex, $_; } } else { push @other, $_; } }
print "\n\n=head2 List of Simple Frames\n\nFollowing Frames are supported and return a single string (text). In the List you can find the frame IDs and the long names of the frames as returned by \$id3v2->get_frame():\n\n=over 4\n\n"; foreach (sort @text) { $long = $MP3::Tag::ID3v2::long_names{$_}; print "\n=item $_ : $long\n"; } print "\n=back\n\n";
print "\n\n=head2 List of Complex Frames\n\n"; print "Following frames are supported and return a reference to a hash. The list shows which keys can be found in the returned hash:\n"; print "\n=over 4\n\n"; foreach (sort @complex) { $long = $MP3::Tag::ID3v2::long_names{$_}; print "\n=item $_ : $long\n\n"; $data = MP3::Tag::ID3v2::what_data("", $_); print " Keys: ", join(", ",@$data), "\n"; } print "\n=back\n\n";
print "\n\n=head2 List of Other Frames\n\n"; print "Following frames are only supported in raw mode:\n"; print "\n=over 4\n\n"; foreach (sort @other) { $long = $MP3::Tag::ID3v2::long_names{$_}; print "\n=item $_ : $long\n"; } print "\n=back\n\n";
print <<END;
MP3::Tag, MP3::Tag::ID3v2
END
select($std); close POD;
2 POD Errors
The following errors were encountered while parsing the POD:
You forgot a '=back' before '=head2'
'=item' outside of any '=over'
To install MP3::Tag, copy and paste the appropriate command in to your terminal.
cpanm
cpanm MP3::Tag
CPAN shell
perl -MCPAN -e shell install MP3::Tag
For more information on module installation, please visit the detailed CPAN module installation guide.