257 lines
8.1 KiB
Perl
257 lines
8.1 KiB
Perl
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#------------------------------------------------------------------------------
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# File: PhotoMechanic.pm
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#
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# Description: Read/write Camera Bits Photo Mechanic information
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#
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# Revisions: 10/28/2006 - P. Harvey Created
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#------------------------------------------------------------------------------
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package Image::ExifTool::PhotoMechanic;
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use strict;
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use vars qw($VERSION);
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use Image::ExifTool qw(:DataAccess :Utils);
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use Image::ExifTool::Exif;
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use Image::ExifTool::IPTC;
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use Image::ExifTool::XMP;
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$VERSION = '1.04';
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sub ProcessPhotoMechanic($$);
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# color class names
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my %colorClasses = (
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0 => '0 (None)',
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1 => '1 (Winner)',
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2 => '2 (Winner alt)',
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3 => '3 (Superior)',
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4 => '4 (Superior alt)',
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5 => '5 (Typical)',
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6 => '6 (Typical alt)',
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7 => '7 (Extras)',
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8 => '8 (Trash)',
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);
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# main tag table IPTC-format records in PhotoMechanic trailer
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%Image::ExifTool::PhotoMechanic::Main = (
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GROUPS => { 2 => 'Image' },
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PROCESS_PROC => \&Image::ExifTool::IPTC::ProcessIPTC,
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WRITE_PROC => \&Image::ExifTool::IPTC::WriteIPTC,
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NOTES => q{
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The Photo Mechanic trailer contains data in an IPTC-format structure, with
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soft edit information stored under record number 2.
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},
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2 => {
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Name => 'SoftEdit',
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SubDirectory => {
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TagTable => 'Image::ExifTool::PhotoMechanic::SoftEdit',
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},
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},
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);
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# raw/preview crop coordinate conversions
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my %rawCropConv = (
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ValueConv => '$val / 655.36',
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ValueConvInv => 'int($val * 655.36 + 0.5)',
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PrintConv => 'sprintf("%.3f%%",$val)',
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PrintConvInv => '$val=~tr/ %//d; $val',
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);
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# Record 2 -- PhotoMechanic soft edit information
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%Image::ExifTool::PhotoMechanic::SoftEdit = (
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GROUPS => { 2 => 'Image' },
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WRITE_PROC => \&Image::ExifTool::IPTC::WriteIPTC,
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CHECK_PROC => \&Image::ExifTool::IPTC::CheckIPTC,
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WRITABLE => 1,
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FORMAT => 'int32s',
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209 => { Name => 'RawCropLeft', %rawCropConv },
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210 => { Name => 'RawCropTop', %rawCropConv },
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211 => { Name => 'RawCropRight', %rawCropConv },
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212 => { Name => 'RawCropBottom', %rawCropConv },
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213 => 'ConstrainedCropWidth',
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214 => 'ConstrainedCropHeight',
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215 => 'FrameNum',
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216 => {
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Name => 'Rotation',
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PrintConv => {
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0 => '0',
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1 => '90',
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2 => '180',
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3 => '270',
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},
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},
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217 => 'CropLeft',
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218 => 'CropTop',
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219 => 'CropRight',
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220 => 'CropBottom',
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221 => {
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Name => 'Tagged',
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PrintConv => { 0 => 'No', 1 => 'Yes' },
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},
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222 => {
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Name => 'ColorClass',
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PrintConv => \%colorClasses,
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},
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223 => 'Rating',
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236 => { Name => 'PreviewCropLeft', %rawCropConv },
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237 => { Name => 'PreviewCropTop', %rawCropConv },
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238 => { Name => 'PreviewCropRight', %rawCropConv },
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239 => { Name => 'PreviewCropBottom', %rawCropConv },
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);
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# PhotoMechanic XMP properties
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%Image::ExifTool::PhotoMechanic::XMP = (
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GROUPS => { 0 => 'XMP', 1 => 'XMP-photomech', 2 => 'Image' },
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NAMESPACE => { photomechanic => 'http://ns.camerabits.com/photomechanic/1.0/' },
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WRITE_PROC => \&Image::ExifTool::XMP::WriteXMP,
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WRITABLE => 'string',
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NOTES => q{
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Below is a list of the observed PhotoMechanic XMP tags. The actual
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namespace prefix is "photomechanic" but ExifTool shortens this in
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the "XMP-photomech" family 1 group name.
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},
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ColorClass => {
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Writable => 'integer',
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PrintConv => \%colorClasses,
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},
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CountryCode => { Avoid => 1, Groups => { 2 => 'Location' } },
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EditStatus => { },
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PMVersion => { },
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Prefs => {
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Notes => 'format is "Tagged:0, ColorClass:1, Rating:2, FrameNum:3"',
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PrintConv => q{
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$val =~ s[\s*(\d+):\s*(\d+):\s*(\d+):\s*(\S*)]
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[Tagged:$1, ColorClass:$2, Rating:$3, FrameNum:$4];
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return $val;
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},
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PrintConvInv => q{
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$val =~ s[Tagged:\s*(\d+).*ColorClass:\s*(\d+).*Rating:\s*(\d+).*FrameNum:\s*(\S*)]
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[$1:$2:$3:$4]is;
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return $val;
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},
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},
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Tagged => { Writable => 'boolean', PrintConv => { False => 'No', True => 'Yes' } },
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TimeCreated => {
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Avoid => 1,
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Groups => { 2 => 'Time' },
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Shift => 'Time',
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ValueConv => 'Image::ExifTool::Exif::ExifTime($val)',
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ValueConvInv => 'Image::ExifTool::IPTC::IptcTime($val)',
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},
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);
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#------------------------------------------------------------------------------
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# Read/write PhotoMechanic information in a file
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# Inputs: 0) ExifTool object reference, 1) dirInfo reference
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# Returns: 1 on success, 0 if this file didn't contain PhotoMechanic information
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# - updates DataPos to point to start of PhotoMechanic information
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# - updates DirLen to trailer length
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sub ProcessPhotoMechanic($$)
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{
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my ($et, $dirInfo) = @_;
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my $raf = $$dirInfo{RAF};
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my $offset = $$dirInfo{Offset} || 0;
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my $outfile = $$dirInfo{OutFile};
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my $verbose = $et->Options('Verbose');
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my $out = $et->Options('TextOut');
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my $rtnVal = 0;
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my ($buff, $footer);
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for (;;) {
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# read and validate trailer footer (last 12 bytes)
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last unless $raf->Seek(-12-$offset, 2) and $raf->Read($footer, 12) == 12;
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last unless $footer =~ /cbipcbbl$/;
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my $size = unpack('N', $footer);
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if ($size & 0x80000000 or not $raf->Seek(-$size-12, 1)) {
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$et->Warn('Bad PhotoMechanic trailer');
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last;
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}
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unless ($raf->Read($buff, $size) == $size) {
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$et->Warn('Error reading PhotoMechanic trailer');
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last;
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}
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$rtnVal = 1; # we read the trailer successfully
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# set variables returned in dirInfo hash
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$$dirInfo{DataPos} = $raf->Tell() - $size;
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$$dirInfo{DirLen} = $size + 12;
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my %dirInfo = (
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DataPt => \$buff,
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DataPos => $$dirInfo{DataPos},
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DirStart => 0,
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DirLen => $size,
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Parent => 'PhotoMechanic',
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);
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my $tagTablePtr = GetTagTable('Image::ExifTool::PhotoMechanic::Main');
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if (not $outfile) {
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# extract trailer information
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$et->DumpTrailer($dirInfo) if $verbose or $$et{HTML_DUMP};
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$et->ProcessDirectory(\%dirInfo, $tagTablePtr);
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} elsif ($$et{DEL_GROUP}{PhotoMechanic}) {
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# delete the trailer
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$verbose and print $out " Deleting PhotoMechanic trailer\n";
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++$$et{CHANGED};
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} else {
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# rewrite the trailer
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my $newPt;
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my $newBuff = $et->WriteDirectory(\%dirInfo, $tagTablePtr);
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if (defined $newBuff) {
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$newPt = \$newBuff; # write out the modified trailer
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my $pad = 0x800 - length($newBuff);
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if ($pad > 0 and not $et->Options('Compact')) {
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# pad out to 2kB like PhotoMechanic does
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$newBuff .= "\0" x $pad;
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}
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# generate new footer
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$footer = pack('N', length($$newPt)) . 'cbipcbbl';
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} else {
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$newPt = \$buff; # just copy existing trailer
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}
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# write out the trailer
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Write($outfile, $$newPt, $footer) or $rtnVal = -1;
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}
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last;
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}
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return $rtnVal;
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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::PhotoMechanic - Read/write Photo Mechanic information
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=head1 SYNOPSIS
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This module is used by Image::ExifTool
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=head1 DESCRIPTION
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This module contains definitions required by Image::ExifTool to read and
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write information written by the Camera Bits Photo Mechanic software.
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=head1 AUTHOR
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Copyright 2003-2016, 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 ACKNOWLEDGEMENTS
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Many thanks to the great support provided by Camera Bits, and in particular
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for the valuable exchanges with Kirk Baker. Based on this experience, I can
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say that the technical support offered by Camera Bits is second to none.
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=head1 SEE ALSO
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L<Image::ExifTool::TagNames/PhotoMechanic Tags>,
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L<Image::ExifTool(3pm)|Image::ExifTool>
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=cut
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