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#------------------------------------------------------------------------------
# File: Opus.pm
#
# Description: Read Ogg Opus audio meta information
#
# Revisions: 2016/07/14 - P. Harvey Created
#
# References: 1) https://www.opus-codec.org/docs/
# 2) https://wiki.xiph.org/OggOpus
# 3) https://tools.ietf.org/pdf/rfc7845.pdf
#------------------------------------------------------------------------------
package Image::ExifTool::Opus;
use strict;
use vars qw($VERSION);
$VERSION = '1.00';
# Opus metadata types
%Image::ExifTool::Opus::Main = (
NOTES => q{
Information extracted from Ogg Opus files. See
L<https://www.opus-codec.org/docs/> for the specification.
},
'OpusHead' => {
Name => 'Header',
SubDirectory => { TagTable => 'Image::ExifTool::Opus::Header' },
},
'OpusTags' => {
Name => 'Comments',
SubDirectory => { TagTable => 'Image::ExifTool::Vorbis::Comments' },
},
);
%Image::ExifTool::Opus::Header = (
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
GROUPS => { 2 => 'Audio' },
0 => 'OpusVersion',
1 => 'AudioChannels',
# 2 => 'PreSkip' (int16u)
4 => {
Name => 'SampleRate',
Format => 'int32u',
},
8 => {
Name => 'OutputGain',
Format => 'int16u',
ValueConv => '10 ** ($val/5120)',
},
);
1; # end
__END__
=head1 NAME
Image::ExifTool::Opus - Read Ogg Opus audio meta information
=head1 SYNOPSIS
This module is used by Image::ExifTool
=head1 DESCRIPTION
This module contains definitions required by Image::ExifTool to extract meta
information from Ogg Opus audio files.
=head1 AUTHOR
Copyright 2003-2021, Phil Harvey (philharvey66 at gmail.com)
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=head1 REFERENCES
=over 4
=item L<https://www.opus-codec.org/docs/>
=item L<https://wiki.xiph.org/OggOpus>
=item L<https://tools.ietf.org/pdf/rfc7845.pdf>
=back
=head1 SEE ALSO
L<Image::ExifTool::TagNames/Opus Tags>,
L<Image::ExifTool::TagNames/Ogg Tags>,
L<Image::ExifTool::TagNames/Vorbis Tags>,
L<Image::ExifTool::TagNames/FLAC Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>
=cut
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