/usr/share/perl5/Image/ExifTool/JVC.pm is in libimage-exiftool-perl 8.60-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# File: JVC.pm
#
# Description: JVC EXIF maker notes tags
#
# Revisions: 12/21/2005 - P. Harvey Created
#------------------------------------------------------------------------------
package Image::ExifTool::JVC;
use strict;
use vars qw($VERSION);
use Image::ExifTool::Exif;
$VERSION = '1.02';
sub ProcessJVCText($$$);
# JVC EXIF-based maker notes
%Image::ExifTool::JVC::Main = (
WRITE_PROC => \&Image::ExifTool::Exif::WriteExif,
CHECK_PROC => \&Image::ExifTool::Exif::CheckExif,
GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
NOTES => 'JVC EXIF maker note tags.',
#0x0001 - almost always '2', but '3' for GR-DV700 samples
0x0002 => { #PH
Name => 'CPUVersions',
# remove trailing nulls/spaces and split at remaining nulls/spaces
ValueConv => '$_=$val; s/(\s*\0)+$//; s/(\s*\0)+/, /g; $_',
},
0x0003 => { #PH
Name => 'Quality',
PrintConv => {
0 => 'Low',
1 => 'Normal',
2 => 'Fine',
},
},
);
# JVC text-based maker notes
%Image::ExifTool::JVC::Text = (
GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
PROCESS_PROC => \&ProcessJVCText,
NOTES => 'JVC/Victor text-based maker note tags.',
VER => 'MakerNoteVersion', #PH
QTY => { #PH
Name => 'Quality',
PrintConv => {
STND => 'Normal',
STD => 'Normal',
FINE => 'Fine',
},
},
);
#------------------------------------------------------------------------------
# Process JVC text-based maker notes
# Inputs: 0) ExifTool object reference
# 1) Reference to directory information hash
# 2) Pointer to tag table for this directory
# Returns: 1 on success, otherwise returns 0 and sets a Warning
sub ProcessJVCText($$$)
{
my ($exifTool, $dirInfo, $tagTablePtr) = @_;
my $dataPt = $$dirInfo{DataPt};
my $dirStart = $$dirInfo{DirStart} || 0;
my $dataLen = $$dirInfo{DataLen};
my $dirLen = $$dirInfo{DirLen} || $dataLen - $dirStart;
my $verbose = $exifTool->Options('Verbose');
my $data = substr($$dataPt, $dirStart, $dirLen);
# validate text maker notes
unless ($data =~ /^VER:/) {
$exifTool->Warn('Bad JVC text maker notes');
return 0;
}
while ($data =~ m/([A-Z]+):(.{3,4})/sg) {
my ($tag, $val) = ($1, $2);
my $tagInfo = $exifTool->GetTagInfo($tagTablePtr, $tag);
$exifTool->VerboseInfo($tag, $tagInfo,
Table => $tagTablePtr,
Value => $val,
) if $verbose;
unless ($tagInfo) {
next unless $exifTool->{OPTIONS}->{Unknown};
$tagInfo = {
Name => "JVC_Text_$tag",
Unknown => 1,
PrintConv => 'length($val) > 60 ? substr($val,0,55) . "[...]" : $val',
};
# add tag information to table
Image::ExifTool::AddTagToTable($tagTablePtr, $tag, $tagInfo);
}
$exifTool->FoundTag($tagInfo, $val);
}
return 1;
}
1; # end
__END__
=head1 NAME
Image::ExifTool::JVC - JVC EXIF maker notes tags
=head1 SYNOPSIS
This module is loaded automatically by Image::ExifTool when required.
=head1 DESCRIPTION
This module contains routines used by Image::ExifTool to interpret JVC maker
notes.
=head1 AUTHOR
Copyright 2003-2011, 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 SEE ALSO
L<Image::ExifTool::TagNames/JVC Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>
=cut
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