Author image Dave Cross
and 1 contributors

NAME

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

SYNOPSIS

        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);
        }

DESCRIPTION

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.

CONSTRUCTORS

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.

INSTANCE METHODS

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.

SEE ALSO

Ogg::Vorbis::Decoder - module for decoding Ogg Vorbis files. Requires a C compiler.

Ogg::Vorbis::Header - another module for accessing Ogg Vorbis header info.

Ogg::Vorbis - a perl interface to the libvorbisfile library, for decoding and manipulating Vorbis audio streams.

REPOSITORY

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

AUTHOR

Andrew Molloy <amolloy@kaizolabs.com>

Dan Sully <daniel | at | cpan.org>

COPYRIGHT

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).

SEE ALSO

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