Ogg::Vorbis::Header::PurePerl - access Ogg Vorbis info and comment fields

       Andrew Molloy <amolloy@kaizolabs.com>

       Dan Sully <daniel | at | cpan.org>

"new($filename)"
       Opens an Ogg Vorbis file, ensuring that it exists and is actually an Ogg Vorbis stream.  This method does
       not actually read any of the information or comment fields, and closes the file immediately.

       Copyright (c) 2003, Andrew Molloy.  All Rights Reserved.

       Copyright (c) 2005-2009, Dan Sully.  All Rights Reserved.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU
       General Public License as published by the Free Software Foundation; either version 2 of the License, or
       (at your option) any later version.  A copy of this license is included with this module (LICENSE.GPL).

       This module is intended to be a drop in replacement for Ogg::Vorbis::Header, implemented entirely in
       Perl.  It provides an object-oriented interface to Ogg Vorbis information and comment fields.  (NOTE:
       This module currently supports only read operations).

       Unlike Ogg::Vorbis::Header, this module will go ahead and fill in all of the information fields as soon
       as you construct the object.

"info([$key])"
       Returns a hashref containing information about the Ogg Vorbis file from the file's information header.
       Hash fields are: version, channels, rate, bitrate_upper, bitrate_nominal, bitrate_lower, bitrate_window,
       and length.  The bitrate_window value is not currently used by the vorbis codec, and will always be -1.

       The optional parameter, key, allows you to retrieve a single value from the object's hash.  Returns
       "undef" if the key is not found.

   "comment_tags()"
       Returns an array containing the key values for the comment fields.  These values can then be passed to
       "comment" to retrieve their values.

   "comment($key)"
       Returns an array of comment values associated with the given key.

   "add_comments($key,$value,[$key,$value,...])"
       Unimplemented.

   "edit_comment($key,$value,[$num])"
       Unimplemented.

   "delete_comment($key,[$num])"
       Unimplemented.

   "clear_comments([@keys])"
       Unimplemented.

   "write_vorbis()"
       Unimplemented.

   "path()"
       Returns the path/filename of the file the object represents.

       Ogg::Vorbis::Header::PurePerl - access Ogg Vorbis info and comment fields

       <https://github.com/dsully/perl-ogg-vorbis-header-pureperl>

       Ogg::Vorbis::Header, Ogg::Vorbis::Decoder

perl v5.32.0                                       2020-12-08                 Ogg::Vorbis::Header::PurePerl(3pm)

               use Ogg::Vorbis::Header::PurePerl;
               my $ogg = Ogg::Vorbis::Header::PurePerl->new("song.ogg");
               while (my ($k, $v) = each %{$ogg->info}) {
                       print "$k: $v\n";
               }
               foreach my $com ($ogg->comment_tags) {
                       print "$com: $_\n" foreach $ogg->comment($com);
               }