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#------------------------------------------------------------------------------
# File: PhotoMechanic.pm
#
# Description: Read/write Camera Bits Photo Mechanic information
#
# Revisions: 10/28/2006 - P. Harvey Created
#------------------------------------------------------------------------------
package Image::ExifTool::PhotoMechanic;
use strict;
use vars qw($VERSION);
use Image::ExifTool qw(:DataAccess :Utils);
use Image::ExifTool::Exif;
use Image::ExifTool::IPTC;
use Image::ExifTool::XMP;
$VERSION = '1.06';
sub ProcessPhotoMechanic($$);
# color class names
my %colorClasses = (
0 => '0 (None)',
1 => '1 (Winner)',
2 => '2 (Winner alt)',
3 => '3 (Superior)',
4 => '4 (Superior alt)',
5 => '5 (Typical)',
6 => '6 (Typical alt)',
7 => '7 (Extras)',
8 => '8 (Trash)',
);
# main tag table IPTC-format records in PhotoMechanic trailer
%Image::ExifTool::PhotoMechanic::Main = (
GROUPS => { 2 => 'Image' },
PROCESS_PROC => \&Image::ExifTool::IPTC::ProcessIPTC,
WRITE_PROC => \&Image::ExifTool::IPTC::WriteIPTC,
NOTES => q{
The Photo Mechanic trailer contains data in an IPTC-format structure, with
soft edit information stored under record number 2.
},
2 => {
Name => 'SoftEdit',
SubDirectory => {
TagTable => 'Image::ExifTool::PhotoMechanic::SoftEdit',
},
},
);
# raw/preview crop coordinate conversions
my %rawCropConv = (
ValueConv => '$val / 655.36',
ValueConvInv => 'int($val * 655.36 + 0.5)',
PrintConv => 'sprintf("%.3f%%",$val)',
PrintConvInv => '$val=~tr/ %//d; $val',
);
# Record 2 -- PhotoMechanic soft edit information
%Image::ExifTool::PhotoMechanic::SoftEdit = (
GROUPS => { 2 => 'Image' },
WRITE_PROC => \&Image::ExifTool::IPTC::WriteIPTC,
CHECK_PROC => \&Image::ExifTool::IPTC::CheckIPTC,
WRITABLE => 1,
FORMAT => 'int32s',
209 => { Name => 'RawCropLeft', %rawCropConv },
210 => { Name => 'RawCropTop', %rawCropConv },
211 => { Name => 'RawCropRight', %rawCropConv },
212 => { Name => 'RawCropBottom', %rawCropConv },
213 => 'ConstrainedCropWidth',
214 => 'ConstrainedCropHeight',
215 => 'FrameNum',
216 => {
Name => 'Rotation',
PrintConv => {
0 => '0',
1 => '90',
2 => '180',
3 => '270',
},
},
217 => 'CropLeft',
218 => 'CropTop',
219 => 'CropRight',
220 => 'CropBottom',
221 => {
Name => 'Tagged',
PrintConv => { 0 => 'No', 1 => 'Yes' },
},
222 => {
Name => 'ColorClass',
PrintConv => \%colorClasses,
},
223 => 'Rating',
236 => { Name => 'PreviewCropLeft', %rawCropConv },
237 => { Name => 'PreviewCropTop', %rawCropConv },
238 => { Name => 'PreviewCropRight', %rawCropConv },
239 => { Name => 'PreviewCropBottom', %rawCropConv },
);
# PhotoMechanic XMP properties
%Image::ExifTool::PhotoMechanic::XMP = (
GROUPS => { 0 => 'XMP', 1 => 'XMP-photomech', 2 => 'Image' },
NAMESPACE => { photomechanic => 'http://ns.camerabits.com/photomechanic/1.0/' },
WRITE_PROC => \&Image::ExifTool::XMP::WriteXMP,
WRITABLE => 'string',
NOTES => q{
Below is a list of the observed PhotoMechanic XMP tags. The actual
namespace prefix is "photomechanic" but ExifTool shortens this in
the family 1 group name.
},
ColorClass => {
Writable => 'integer',
PrintConv => \%colorClasses,
},
CountryCode => { Avoid => 1, Groups => { 2 => 'Location' } },
EditStatus => { },
PMVersion => { },
Prefs => {
Notes => 'format is "Tagged:0, ColorClass:1, Rating:2, FrameNum:3"',
PrintConv => q{
$val =~ s[\s*(\d+):\s*(\d+):\s*(\d+):\s*(\S*)]
[Tagged:$1, ColorClass:$2, Rating:$3, FrameNum:$4];
return $val;
},
PrintConvInv => q{
$val =~ s[Tagged:\s*(\d+).*ColorClass:\s*(\d+).*Rating:\s*(\d+).*FrameNum:\s*(\S*)]
[$1:$2:$3:$4]is;
return $val;
},
},
Tagged => { Writable => 'boolean', PrintConv => { False => 'No', True => 'Yes' } },
TimeCreated => {
Avoid => 1,
Groups => { 2 => 'Time' },
Shift => 'Time',
ValueConv => 'Image::ExifTool::Exif::ExifTime($val)',
ValueConvInv => 'Image::ExifTool::IPTC::IptcTime($val)',
},
);
#------------------------------------------------------------------------------
# Read/write PhotoMechanic information in a file
# Inputs: 0) ExifTool object reference, 1) dirInfo reference
# Returns: 1 on success, 0 if this file didn't contain PhotoMechanic information
# - updates DataPos to point to start of PhotoMechanic information
# - updates DirLen to trailer length
sub ProcessPhotoMechanic($$)
{
my ($et, $dirInfo) = @_;
my $raf = $$dirInfo{RAF};
my $offset = $$dirInfo{Offset} || 0;
my $outfile = $$dirInfo{OutFile};
my $verbose = $et->Options('Verbose');
my $out = $et->Options('TextOut');
my $rtnVal = 0;
my ($buff, $footer);
for (;;) {
# read and validate trailer footer (last 12 bytes)
last unless $raf->Seek(-12-$offset, 2) and $raf->Read($footer, 12) == 12;
last unless $footer =~ /cbipcbbl$/;
my $size = unpack('N', $footer);
if ($size & 0x80000000 or not $raf->Seek(-$size-12, 1)) {
$et->Warn('Bad PhotoMechanic trailer');
last;
}
unless ($raf->Read($buff, $size) == $size) {
$et->Warn('Error reading PhotoMechanic trailer');
last;
}
$rtnVal = 1; # we read the trailer successfully
# set variables returned in dirInfo hash
$$dirInfo{DataPos} = $raf->Tell() - $size;
$$dirInfo{DirLen} = $size + 12;
my %dirInfo = (
DataPt => \$buff,
DataPos => $$dirInfo{DataPos},
DirStart => 0,
DirLen => $size,
Parent => 'PhotoMechanic',
);
my $tagTablePtr = GetTagTable('Image::ExifTool::PhotoMechanic::Main');
if (not $outfile) {
# extract trailer information
$et->DumpTrailer($dirInfo) if $verbose or $$et{HTML_DUMP};
$et->ProcessDirectory(\%dirInfo, $tagTablePtr);
} elsif ($$et{DEL_GROUP}{PhotoMechanic}) {
# delete the trailer
$verbose and print $out " Deleting PhotoMechanic trailer\n";
++$$et{CHANGED};
} else {
# rewrite the trailer
my $newPt;
my $newBuff = $et->WriteDirectory(\%dirInfo, $tagTablePtr);
if (defined $newBuff) {
$newPt = \$newBuff; # write out the modified trailer
my $pad = 0x800 - length($newBuff);
if ($pad > 0 and not $$et{OPTIONS}{Compact}{NoPadding}) {
# pad out to 2kB like PhotoMechanic does
$newBuff .= "\0" x $pad;
}
# generate new footer
$footer = pack('N', length($$newPt)) . 'cbipcbbl';
} else {
$newPt = \$buff; # just copy existing trailer
}
# write out the trailer
Write($outfile, $$newPt, $footer) or $rtnVal = -1;
}
last;
}
return $rtnVal;
}
1; # end
__END__
=head1 NAME
Image::ExifTool::PhotoMechanic - Read/write Photo Mechanic information
=head1 SYNOPSIS
This module is used by Image::ExifTool
=head1 DESCRIPTION
This module contains definitions required by Image::ExifTool to read and
write information written by the Camera Bits Photo Mechanic software.
=head1 AUTHOR
Copyright 2003-2023, 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 ACKNOWLEDGEMENTS
Many thanks to the great support provided by Camera Bits, and in particular
for the valuable exchanges with Kirk Baker. Based on this experience, I can
say that the technical support offered by Camera Bits is second to none.
=head1 SEE ALSO
L<Image::ExifTool::TagNames/PhotoMechanic Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>
=cut
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