Tester utilities
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#------------------------------------------------------------------------------
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# File: JVC.pm
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#
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# Description: JVC EXIF maker notes tags
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#
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# Revisions: 12/21/2005 - P. Harvey Created
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#------------------------------------------------------------------------------
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package Image::ExifTool::JVC;
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use strict;
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use vars qw($VERSION);
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use Image::ExifTool qw(:DataAccess :Utils);
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use Image::ExifTool::Exif;
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$VERSION = '1.03';
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sub ProcessJVCText($$$);
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# JVC EXIF-based maker notes
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%Image::ExifTool::JVC::Main = (
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WRITE_PROC => \&Image::ExifTool::Exif::WriteExif,
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CHECK_PROC => \&Image::ExifTool::Exif::CheckExif,
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GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
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NOTES => 'JVC EXIF maker note tags.',
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#0x0001 - almost always '2', but '3' for GR-DV700 samples
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0x0002 => { #PH
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Name => 'CPUVersions',
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# remove trailing nulls/spaces and split at remaining nulls/spaces
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ValueConv => '$_=$val; s/(\s*\0)+$//; s/(\s*\0)+/, /g; $_',
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},
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0x0003 => { #PH
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Name => 'Quality',
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PrintConv => {
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0 => 'Low',
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1 => 'Normal',
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2 => 'Fine',
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},
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},
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);
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# JVC text-based maker notes
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%Image::ExifTool::JVC::Text = (
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GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
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PROCESS_PROC => \&ProcessJVCText,
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NOTES => 'JVC/Victor text-based maker note tags.',
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VER => 'MakerNoteVersion', #PH
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QTY => { #PH
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Name => 'Quality',
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PrintConv => {
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STND => 'Normal',
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STD => 'Normal',
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FINE => 'Fine',
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},
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},
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);
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#------------------------------------------------------------------------------
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# Process JVC text-based maker notes
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# Inputs: 0) ExifTool object reference
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# 1) Reference to directory information hash
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# 2) Pointer to tag table for this directory
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# Returns: 1 on success, otherwise returns 0 and sets a Warning
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sub ProcessJVCText($$$)
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{
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my ($et, $dirInfo, $tagTablePtr) = @_;
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my $dataPt = $$dirInfo{DataPt};
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my $dirStart = $$dirInfo{DirStart} || 0;
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my $dataLen = $$dirInfo{DataLen};
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my $dirLen = $$dirInfo{DirLen} || $dataLen - $dirStart;
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my $verbose = $et->Options('Verbose');
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my $data = substr($$dataPt, $dirStart, $dirLen);
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# validate text maker notes
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unless ($data =~ /^VER:/) {
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$et->Warn('Bad JVC text maker notes');
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return 0;
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}
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while ($data =~ m/([A-Z]+):(.{3,4})/sg) {
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my ($tag, $val) = ($1, $2);
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my $tagInfo = $et->GetTagInfo($tagTablePtr, $tag);
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$et->VerboseInfo($tag, $tagInfo,
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Table => $tagTablePtr,
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Value => $val,
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) if $verbose;
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unless ($tagInfo) {
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next unless $$et{OPTIONS}{Unknown};
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$tagInfo = {
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Name => "JVC_Text_$tag",
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Unknown => 1,
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PrintConv => 'length($val) > 60 ? substr($val,0,55) . "[...]" : $val',
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};
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# add tag information to table
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AddTagToTable($tagTablePtr, $tag, $tagInfo);
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}
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$et->FoundTag($tagInfo, $val);
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}
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return 1;
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}
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1; # end
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__END__
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=head1 NAME
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Image::ExifTool::JVC - JVC EXIF maker notes tags
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=head1 SYNOPSIS
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This module is loaded automatically by Image::ExifTool when required.
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=head1 DESCRIPTION
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This module contains routines used by Image::ExifTool to interpret JVC maker
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notes.
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=head1 AUTHOR
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Copyright 2003-2018, Phil Harvey (phil at owl.phy.queensu.ca)
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This library is free software; you can redistribute it and/or modify it
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under the same terms as Perl itself.
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=head1 SEE ALSO
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L<Image::ExifTool::TagNames/JVC Tags>,
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L<Image::ExifTool(3pm)|Image::ExifTool>
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=cut
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