Tester utilities

utils/IconTester.app/Contents/Resources/bin/lib/Image/ExifTool/Opus.pm

@@ -0,0 +1,98 @@
+#------------------------------------------------------------------------------
+# 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 2003-2018, Phil Harvey (phil at owl.phy.queensu.ca)
+
+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
+