| 1 | #------------------------------------------------------------------------------
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| 2 | # File: PhotoMechanic.pm
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| 3 | #
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| 4 | # Description: Read/write Camera Bits Photo Mechanic information
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| 5 | #
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| 6 | # Revisions: 10/28/2006 - P. Harvey Created
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| 7 | #------------------------------------------------------------------------------
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| 8 |
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| 9 | package Image::ExifTool::PhotoMechanic;
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| 10 |
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| 11 | use strict;
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| 12 | use vars qw($VERSION);
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| 13 | use Image::ExifTool qw(:DataAccess :Utils);
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| 14 | use Image::ExifTool::Exif;
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| 15 | use Image::ExifTool::IPTC;
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| 16 | use Image::ExifTool::XMP;
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| 17 |
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| 18 | $VERSION = '1.02';
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| 19 |
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| 20 | sub ProcessPhotoMechanic($$);
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| 21 |
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| 22 | # color class names
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| 23 | my %colorClasses = (
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| 24 | 0 => '0 (None)',
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| 25 | 1 => '1 (Winner)',
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| 26 | 2 => '2 (Winner alt)',
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| 27 | 3 => '3 (Superior)',
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| 28 | 4 => '4 (Superior alt)',
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| 29 | 5 => '5 (Typical)',
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| 30 | 6 => '6 (Typical alt)',
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| 31 | 7 => '7 (Extras)',
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| 32 | 8 => '8 (Trash)',
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| 33 | );
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| 34 |
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| 35 | # main tag table IPTC-format records in PhotoMechanic trailer
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| 36 | %Image::ExifTool::PhotoMechanic::Main = (
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| 37 | GROUPS => { 2 => 'Image' },
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| 38 | PROCESS_PROC => \&Image::ExifTool::IPTC::ProcessIPTC,
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| 39 | WRITE_PROC => \&Image::ExifTool::IPTC::WriteIPTC,
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| 40 | NOTES => q{
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| 41 | The Photo Mechanic trailer contains data in an IPTC-format structure, with
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| 42 | soft edit information stored under record number 2.
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| 43 | },
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| 44 | 2 => {
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| 45 | Name => 'SoftEdit',
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| 46 | SubDirectory => {
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| 47 | TagTable => 'Image::ExifTool::PhotoMechanic::SoftEdit',
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| 48 | },
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| 49 | },
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| 50 | );
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| 51 |
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| 52 | # raw/preview crop coordinate conversions
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| 53 | my %rawCropConv = (
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| 54 | ValueConv => '$val / 655.36',
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| 55 | ValueConvInv => 'int($val * 655.36 + 0.5)',
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| 56 | PrintConv => 'sprintf("%.3f%%",$val)',
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| 57 | PrintConvInv => '$val=~tr/ %//d; $val',
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| 58 | );
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| 59 |
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| 60 | # Record 2 -- PhotoMechanic soft edit information
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| 61 | %Image::ExifTool::PhotoMechanic::SoftEdit = (
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| 62 | GROUPS => { 2 => 'Image' },
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| 63 | WRITE_PROC => \&Image::ExifTool::IPTC::WriteIPTC,
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| 64 | CHECK_PROC => \&Image::ExifTool::IPTC::CheckIPTC,
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| 65 | WRITABLE => 1,
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| 66 | FORMAT => 'int32s',
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| 67 | 209 => { Name => 'RawCropLeft', %rawCropConv },
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| 68 | 210 => { Name => 'RawCropTop', %rawCropConv },
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| 69 | 211 => { Name => 'RawCropRight', %rawCropConv },
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| 70 | 212 => { Name => 'RawCropBottom', %rawCropConv },
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| 71 | 213 => 'ConstrainedCropWidth',
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| 72 | 214 => 'ConstrainedCropHeight',
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| 73 | 215 => 'FrameNum',
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| 74 | 216 => {
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| 75 | Name => 'Rotation',
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| 76 | PrintConv => {
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| 77 | 0 => '0',
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| 78 | 1 => '90',
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| 79 | 2 => '180',
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| 80 | 3 => '270',
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| 81 | },
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| 82 | },
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| 83 | 217 => 'CropLeft',
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| 84 | 218 => 'CropTop',
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| 85 | 219 => 'CropRight',
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| 86 | 220 => 'CropBottom',
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| 87 | 221 => {
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| 88 | Name => 'Tagged',
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| 89 | PrintConv => { 0 => 'No', 1 => 'Yes' },
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| 90 | },
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| 91 | 222 => {
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| 92 | Name => 'ColorClass',
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| 93 | PrintConv => \%colorClasses,
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| 94 | },
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| 95 | 223 => 'Rating',
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| 96 | 236 => { Name => 'PreviewCropLeft', %rawCropConv },
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| 97 | 237 => { Name => 'PreviewCropTop', %rawCropConv },
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| 98 | 238 => { Name => 'PreviewCropRight', %rawCropConv },
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| 99 | 239 => { Name => 'PreviewCropBottom', %rawCropConv },
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| 100 | );
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| 101 |
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| 102 | # PhotoMechanic XMP properties
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| 103 | %Image::ExifTool::PhotoMechanic::XMP = (
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| 104 | GROUPS => { 0 => 'XMP', 1 => 'XMP-photomech', 2 => 'Image' },
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| 105 | NAMESPACE => { photomechanic => 'http://ns.camerabits.com/photomechanic/1.0/' },
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| 106 | WRITE_PROC => \&Image::ExifTool::XMP::WriteXMP,
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| 107 | WRITABLE => 'string',
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| 108 | NOTES => q{
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| 109 | Below is a list of the observed PhotoMechanic XMP tags. The actual
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| 110 | namespace prefix is "photomechanic" but ExifTool shortens this in
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| 111 | the "XMP-photomech" family 1 group name.
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| 112 | },
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| 113 | CountryCode => { Avoid => 1, Groups => { 2 => 'Location' } },
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| 114 | EditStatus => { },
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| 115 | Prefs => {
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| 116 | Notes => 'format is "Tagged:0, ColorClass:1, Rating:2, FrameNum:3"',
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| 117 | PrintConv => q{
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| 118 | $val =~ s[\s*(\d+):\s*(\d+):\s*(\d+):\s*(\S*)]
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| 119 | [Tagged:$1, ColorClass:$2, Rating:$3, FrameNum:$4];
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| 120 | return $val;
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| 121 | },
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| 122 | PrintConvInv => q{
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| 123 | $val =~ s[Tagged:\s*(\d+).*ColorClass:\s*(\d+).*Rating:\s*(\d+).*FrameNum:\s*(\S*)]
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| 124 | [$1:$2:$3:$4]is;
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| 125 | return $val;
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| 126 | },
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| 127 | },
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| 128 | TimeCreated => {
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| 129 | Avoid => 1,
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| 130 | Groups => { 2 => 'Time' },
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| 131 | Shift => 'Time',
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| 132 | ValueConv => 'Image::ExifTool::Exif::ExifTime($val)',
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| 133 | ValueConvInv => 'Image::ExifTool::IPTC::IptcTime($val)',
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| 134 | },
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| 135 | );
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| 136 |
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| 137 | #------------------------------------------------------------------------------
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| 138 | # Read/write PhotoMechanic information in a file
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| 139 | # Inputs: 0) ExifTool object reference, 1) dirInfo reference
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| 140 | # Returns: 1 on success, 0 if this file didn't contain PhotoMechanic information
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| 141 | # - updates DataPos to point to start of PhotoMechanic information
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| 142 | # - updates DirLen to trailer length
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| 143 | sub ProcessPhotoMechanic($$)
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| 144 | {
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| 145 | my ($exifTool, $dirInfo) = @_;
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| 146 | my $raf = $$dirInfo{RAF};
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| 147 | my $offset = $$dirInfo{Offset} || 0;
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| 148 | my $outfile = $$dirInfo{OutFile};
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| 149 | my $verbose = $exifTool->Options('Verbose');
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| 150 | my $out = $exifTool->Options('TextOut');
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| 151 | my $rtnVal = 0;
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| 152 | my ($buff, $footer);
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| 153 |
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| 154 | for (;;) {
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| 155 | # read and validate trailer footer (last 12 bytes)
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| 156 | last unless $raf->Seek(-12-$offset, 2) and $raf->Read($footer, 12) == 12;
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| 157 | last unless $footer =~ /cbipcbbl$/;
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| 158 | my $size = unpack('N', $footer);
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| 159 |
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| 160 | if ($size & 0x80000000 or not $raf->Seek(-$size-12, 1)) {
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| 161 | $exifTool->Warn('Bad PhotoMechanic trailer');
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| 162 | last;
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| 163 | }
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| 164 | unless ($raf->Read($buff, $size) == $size) {
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| 165 | $exifTool->Warn('Error reading PhotoMechanic trailer');
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| 166 | last;
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| 167 | }
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| 168 | $rtnVal = 1; # we read the trailer successfully
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| 169 |
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| 170 | # set variables returned in dirInfo hash
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| 171 | $$dirInfo{DataPos} = $raf->Tell() - $size;
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| 172 | $$dirInfo{DirLen} = $size + 12;
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| 173 |
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| 174 | my %dirInfo = (
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| 175 | DataPt => \$buff,
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| 176 | DataPos => $$dirInfo{DataPos},
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| 177 | DirStart => 0,
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| 178 | DirLen => $size,
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| 179 | Parent => 'PhotoMechanic',
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| 180 | );
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| 181 | my $tagTablePtr = GetTagTable('Image::ExifTool::PhotoMechanic::Main');
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| 182 | if (not $outfile) {
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| 183 | # extract trailer information
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| 184 | $exifTool->DumpTrailer($dirInfo) if $verbose or $exifTool->{HTML_DUMP};
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| 185 | $exifTool->ProcessDirectory(\%dirInfo, $tagTablePtr);
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| 186 | } elsif ($exifTool->{DEL_GROUP}->{PhotoMechanic}) {
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| 187 | # delete the trailer
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| 188 | $verbose and printf $out " Deleting PhotoMechanic trailer\n";
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| 189 | ++$exifTool->{CHANGED};
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| 190 | } else {
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| 191 | # rewrite the trailer
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| 192 | my $newPt;
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| 193 | my $newBuff = $exifTool->WriteDirectory(\%dirInfo, $tagTablePtr);
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| 194 | if (defined $newBuff) {
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| 195 | $newPt = \$newBuff; # write out the modified trailer
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| 196 | my $pad = 0x800 - length($newBuff);
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| 197 | if ($pad > 0 and not $exifTool->Options('Compact')) {
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| 198 | # pad out to 2kB like PhotoMechanic does
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| 199 | $newBuff .= "\0" x $pad;
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| 200 | }
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| 201 | # generate new footer
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| 202 | $footer = pack('N', length($$newPt)) . 'cbipcbbl';
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| 203 | } else {
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| 204 | $newPt = \$buff; # just copy existing trailer
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| 205 | }
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| 206 | # write out the trailer
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| 207 | Write($outfile, $$newPt, $footer) or $rtnVal = -1;
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| 208 | }
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| 209 | last;
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| 210 | }
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| 211 | return $rtnVal;
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| 212 | }
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| 213 |
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| 214 | 1; # end
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| 215 |
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| 216 | __END__
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| 217 |
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| 218 | =head1 NAME
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| 219 |
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| 220 | Image::ExifTool::PhotoMechanic - Read/write Photo Mechanic information
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| 221 |
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| 222 | =head1 SYNOPSIS
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| 223 |
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| 224 | This module is used by Image::ExifTool
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| 225 |
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| 226 | =head1 DESCRIPTION
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| 227 |
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| 228 | This module contains definitions required by Image::ExifTool to read and
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| 229 | write information written by the Camera Bits Photo Mechanic software.
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| 230 |
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| 231 | =head1 AUTHOR
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| 232 |
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| 233 | Copyright 2003-2011, Phil Harvey (phil at owl.phy.queensu.ca)
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| 234 |
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| 235 | This library is free software; you can redistribute it and/or modify it
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| 236 | under the same terms as Perl itself.
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| 237 |
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| 238 | =head1 ACKNOWLEDGEMENTS
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| 239 |
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| 240 | Many thanks to the great support provided by Camera Bits, and in particular
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| 241 | for the valuable exchanges with Kirk Baker. Based on this experience, I can
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| 242 | say that the technical support offered by Camera Bits is second to none.
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| 243 |
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| 244 | =head1 SEE ALSO
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| 245 |
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| 246 | L<Image::ExifTool::TagNames/PhotoMechanic Tags>,
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| 247 | L<Image::ExifTool(3pm)|Image::ExifTool>
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| 248 |
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| 249 | =cut
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| 250 |
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