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- #------------------------------------------------------------------------------
- # File: JPEG.pm
- #
- # Description: Definitions for uncommon JPEG segments
- #
- # Revisions: 10/06/2006 - P. Harvey Created
- #------------------------------------------------------------------------------
- package Image::ExifTool::JPEG;
- use strict;
- use vars qw($VERSION);
- use Image::ExifTool qw(:DataAccess :Utils);
- $VERSION = '1.25';
- sub ProcessOcad($$$);
- sub ProcessJPEG_HDR($$$);
- # (this main JPEG table is for documentation purposes only)
- %Image::ExifTool::JPEG::Main = (
- NOTES => 'This table lists information extracted by ExifTool from JPEG images.',
- APP0 => [{
- Name => 'JFIF',
- Condition => '$$valPt =~ /^JFIF\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::JFIF::Main' },
- }, {
- Name => 'JFXX',
- Condition => '$$valPt =~ /^JFXX\0\x10/',
- SubDirectory => { TagTable => 'Image::ExifTool::JFIF::Extension' },
- }, {
- Name => 'CIFF',
- Condition => '$$valPt =~ /^(II|MM).{4}HEAPJPGM/s',
- SubDirectory => { TagTable => 'Image::ExifTool::CanonRaw::Main' },
- }, {
- Name => 'AVI1',
- Condition => '$$valPt =~ /^AVI1/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::AVI1' },
- }, {
- Name => 'Ocad',
- Condition => '$$valPt =~ /^Ocad/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::Ocad' },
- }],
- APP1 => [{
- Name => 'EXIF',
- Condition => '$$valPt =~ /^Exif\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Exif::Main' },
- }, {
- Name => 'ExtendedXMP',
- Condition => '$$valPt =~ m{^http://ns.adobe.com/xmp/extension/\0}',
- SubDirectory => { TagTable => 'Image::ExifTool::XMP::Main' },
- }, {
- Name => 'XMP',
- Condition => '$$valPt =~ /^http/ or $$valPt =~ /<exif:/',
- SubDirectory => { TagTable => 'Image::ExifTool::XMP::Main' },
- }, {
- Name => 'QVCI',
- Condition => '$$valPt =~ /^QVCI\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Casio::QVCI' },
- }, {
- Name => 'FLIR',
- Condition => '$$valPt =~ /^FLIR\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::FLIR::FFF' },
- }],
- APP2 => [{
- Name => 'ICC_Profile',
- Condition => '$$valPt =~ /^ICC_PROFILE\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::ICC_Profile::Main' },
- }, {
- Name => 'FPXR',
- Condition => '$$valPt =~ /^FPXR\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::FlashPix::Main' },
- }, {
- Name => 'MPF',
- Condition => '$$valPt =~ /^MPF\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::MPF::Main' },
- }, {
- Name => 'PreviewImage',
- Condition => '$$valPt =~ /^(|QVGA\0|BGTH)\xff\xd8\xff\xdb/',
- Notes => 'Samsung APP2 preview image', # (Samsung/GoPro="", BenQ="QVGA\0", Digilife="BGTH")
- }],
- APP3 => [{
- Name => 'Meta',
- Condition => '$$valPt =~ /^(Meta|META|Exif)\0\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Kodak::Meta' },
- }, {
- Name => 'Stim',
- Condition => '$$valPt =~ /^Stim\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Stim::Main' },
- }, {
- Name => 'PreviewImage', # (written by HP R837 and Samsung S1060)
- Condition => '$$valPt =~ /^\xff\xd8\xff\xdb/',
- Notes => 'Samsung/HP preview image', # (Samsung, HP, BenQ)
- }],
- APP4 => [{
- Name => 'Scalado',
- Condition => '$$valPt =~ /^SCALADO\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Scalado::Main' },
- }, {
- Name => 'FPXR', # (non-standard location written by some HP models)
- Condition => '$$valPt =~ /^FPXR\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::FlashPix::Main' },
- }, {
- Name => 'PreviewImage', # (eg. Samsung S1060)
- Notes => 'continued from APP3',
- }],
- APP5 => [{
- Name => 'RMETA',
- Condition => '$$valPt =~ /^RMETA\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Ricoh::RMETA' },
- }, {
- Name => 'PreviewImage', # (eg. BenQ DC E1050)
- Notes => 'continued from APP4',
- }],
- APP6 => [{
- Name => 'EPPIM',
- Condition => '$$valPt =~ /^EPPIM\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::EPPIM' },
- }, {
- Name => 'NITF',
- Condition => '$$valPt =~ /^NTIF\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::NITF' },
- }, {
- Name => 'HP_TDHD', # (written by R837)
- Condition => '$$valPt =~ /^TDHD\x01\0\0\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::HP::TDHD' },
- }],
- APP7 => [{
- Name => 'Pentax',
- Condition => '$$valPt =~ /^PENTAX \0/',
- SubDirectory => { TagTable => 'Image::ExifTool::Pentax::Main' },
- }, {
- Name => 'Qualcomm',
- Condition => '$$valPt =~ /^\x1aQualcomm Camera Attributes/',
- SubDirectory => { TagTable => 'Image::ExifTool::Qualcomm::Main' },
- }],
- APP8 => {
- Name => 'SPIFF',
- Condition => '$$valPt =~ /^SPIFF\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::SPIFF' },
- },
- APP9 => {
- Name => 'MediaJukebox',
- Condition => '$$valPt =~ /^Media Jukebox\0/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::MediaJukebox' },
- },
- APP10 => {
- Name => 'Comment',
- Condition => '$$valPt =~ /^UNICODE\0/',
- Notes => 'PhotoStudio Unicode comment',
- },
- APP11 => {
- Name => 'JPEG-HDR',
- Condition => '$$valPt =~ /^HDR_RI /',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::HDR' },
- },
- APP12 => [{
- Name => 'PictureInfo',
- Condition => '$$valPt =~ /(\[picture info\]|Type=)/',
- SubDirectory => { TagTable => 'Image::ExifTool::APP12::PictureInfo' },
- }, {
- Name => 'Ducky',
- Condition => '$$valPt =~ /^Ducky/',
- SubDirectory => { TagTable => 'Image::ExifTool::APP12::Ducky' },
- }],
- APP13 => [{
- Name => 'Photoshop',
- Condition => '$$valPt =~ /^(Photoshop 3.0\0|Adobe_Photoshop2.5)/',
- SubDirectory => { TagTable => 'Image::ExifTool::Photoshop::Main' },
- }, {
- Name => 'Adobe_CM',
- Condition => '$$valPt =~ /^Adobe_CM/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::AdobeCM' },
- }],
- APP14 => {
- Name => 'Adobe',
- Condition => '$$valPt =~ /^Adobe/',
- Writable => 1, # (for docs only)
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::Adobe' },
- },
- APP15 => {
- Name => 'GraphicConverter',
- Condition => '$$valPt =~ /^Q\s*(\d+)/',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::GraphConv' },
- },
- # APP15 - Also unknown "TEXT\0" segment stored by Casio/FujiFilm
- COM => {
- Name => 'Comment',
- # note: flag as writable for documentation, but it won't show up
- # in the TagLookup as writable because there is no WRITE_PROC
- Writable => 1,
- },
- SOF => {
- Name => 'StartOfFrame',
- SubDirectory => { TagTable => 'Image::ExifTool::JPEG::SOF' },
- },
- DQT => {
- Name => 'DefineQuantizationTable',
- Notes => 'used to calculate the Extra JPEGDigest tag value',
- },
- Trailer => [{
- Name => 'AFCP',
- Condition => '$$valPt =~ /AXS(!|\*).{8}$/s',
- SubDirectory => { TagTable => 'Image::ExifTool::AFCP::Main' },
- }, {
- Name => 'CanonVRD',
- Condition => '$$valPt =~ /CANON OPTIONAL DATA\0.{44}$/s',
- SubDirectory => { TagTable => 'Image::ExifTool::CanonVRD::Main' },
- }, {
- Name => 'FotoStation',
- Condition => '$$valPt =~ /\xa1\xb2\xc3\xd4$/',
- SubDirectory => { TagTable => 'Image::ExifTool::FotoStation::Main' },
- }, {
- Name => 'PhotoMechanic',
- Condition => '$$valPt =~ /cbipcbbl$/',
- SubDirectory => { TagTable => 'Image::ExifTool::PhotoMechanic::Main' },
- }, {
- Name => 'MIE',
- Condition => q{
- $$valPt =~ /~\0\x04\0zmie~\0\0\x06.{4}[\x10\x18]\x04$/s or
- $$valPt =~ /~\0\x04\0zmie~\0\0\x0a.{8}[\x10\x18]\x08$/s
- },
- SubDirectory => { TagTable => 'Image::ExifTool::MIE::Main' },
- }, {
- Name => 'Samsung',
- Condition => '$$valPt =~ /QDIOBS$/',
- SubDirectory => { TagTable => 'Image::ExifTool::Samsung::Trailer' },
- }, {
- Name => 'PreviewImage',
- Condition => '$$valPt =~ /^\xff\xd8\xff/',
- Writable => 1, # (for docs only)
- }],
- );
- # EPPIM APP6 (Toshiba PrintIM) segment (ref PH, from PDR-M700 samples)
- %Image::ExifTool::JPEG::EPPIM = (
- GROUPS => { 0 => 'APP6', 1 => 'EPPIM', 2 => 'Image' },
- NOTES => q{
- APP6 is used in by the Toshiba PDR-M700 to store a TIFF structure containing
- PrintIM information.
- },
- 0xc4a5 => {
- Name => 'PrintIM',
- # must set Writable here so this tag will be saved with MakerNotes option
- Writable => 'undef',
- Description => 'Print Image Matching',
- SubDirectory => {
- TagTable => 'Image::ExifTool::PrintIM::Main',
- },
- },
- );
- # SPIFF APP8 segment. Refs:
- # 1) http://www.fileformat.info/format/spiff/
- # 2) http://www.jpeg.org/public/spiff.pdf
- %Image::ExifTool::JPEG::SPIFF = (
- PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
- GROUPS => { 0 => 'APP8', 1 => 'SPIFF', 2 => 'Image' },
- NOTES => q{
- This information is found in APP8 of SPIFF-style JPEG images (the "official"
- yet rarely used JPEG file format standard: Still Picture Interchange File
- Format). See L<http://www.jpeg.org/public/spiff.pdf> for the official
- specification.
- },
- 0 => {
- Name => 'SPIFFVersion',
- Format => 'int8u[2]',
- PrintConv => '$val =~ tr/ /./; $val',
- },
- 2 => {
- Name => 'ProfileID',
- PrintConv => {
- 0 => 'Not Specified',
- 1 => 'Continuous-tone Base',
- 2 => 'Continuous-tone Progressive',
- 3 => 'Bi-level Facsimile',
- 4 => 'Continuous-tone Facsimile',
- },
- },
- 3 => 'ColorComponents',
- 6 => {
- Name => 'ImageHeight',
- Notes => q{
- at index 4 in specification, but there are 2 extra bytes here in my only
- SPIFF sample, version 1.2
- },
- Format => 'int32u',
- },
- 10 => {
- Name => 'ImageWidth',
- Format => 'int32u',
- },
- 14 => {
- Name => 'ColorSpace',
- PrintConv => {
- 0 => 'Bi-level',
- 1 => 'YCbCr, ITU-R BT 709, video',
- 2 => 'No color space specified',
- 3 => 'YCbCr, ITU-R BT 601-1, RGB',
- 4 => 'YCbCr, ITU-R BT 601-1, video',
- 8 => 'Gray-scale',
- 9 => 'PhotoYCC',
- 10 => 'RGB',
- 11 => 'CMY',
- 12 => 'CMYK',
- 13 => 'YCCK',
- 14 => 'CIELab',
- },
- },
- 15 => 'BitsPerSample',
- 16 => {
- Name => 'Compression',
- PrintConv => {
- 0 => 'Uncompressed, interleaved, 8 bits per sample',
- 1 => 'Modified Huffman',
- 2 => 'Modified READ',
- 3 => 'Modified Modified READ',
- 4 => 'JBIG',
- 5 => 'JPEG',
- },
- },
- 17 => {
- Name => 'ResolutionUnit',
- PrintConv => {
- 0 => 'None',
- 1 => 'inches',
- 2 => 'cm',
- },
- },
- 18 => {
- Name => 'YResolution',
- Format => 'int32u',
- },
- 22 => {
- Name => 'XResolution',
- Format => 'int32u',
- },
- );
- # Media Jukebox APP9 segment (ref PH)
- %Image::ExifTool::JPEG::MediaJukebox = (
- GROUPS => { 0 => 'XML', 1 => 'MediaJukebox', 2 => 'Image' },
- VARS => { NO_ID => 1 },
- NOTES => 'Tags found in the XML metadata of the "Media Jukebox" APP9 segment.',
- Date => {
- Groups => { 2 => 'Time' },
- # convert from days since Dec 30, 1899 to seconds since Jan 1, 1970
- ValueConv => 'ConvertUnixTime(($val - (70 * 365 + 17 + 2)) * 24 * 3600)',
- PrintConv => '$self->ConvertDateTime($val)',
- },
- Album => { },
- Caption => { },
- Keywords => { },
- Name => { },
- People => { },
- Places => { },
- Tool_Name => { },
- Tool_Version => { },
- );
- # JPEG-HDR APP11 information (ref PH, guessed from http://anyhere.com/gward/papers/cic05.pdf)
- %Image::ExifTool::JPEG::HDR = (
- GROUPS => { 0 => 'APP11', 1 => 'JPEG-HDR', 2 => 'Image' },
- PROCESS_PROC => \&ProcessJPEG_HDR,
- TAG_PREFIX => '', # (no prefix for unknown tags)
- NOTES => 'Information extracted from APP11 of a JPEG-HDR image.',
- ver => 'JPEG-HDRVersion',
- # (need names for the next 3 tags)
- ln0 => { Description => 'Ln0' },
- ln1 => { Description => 'Ln1' },
- s2n => { Description => 'S2n' },
- alp => { Name => 'Alpha' }, # (Alpha/Beta are saturation parameters)
- bet => { Name => 'Beta' },
- cor => { Name => 'CorrectionMethod' },
- RatioImage => {
- Groups => { 2 => 'Preview' },
- Notes => 'the embedded JPEG-compressed ratio image',
- Binary => 1,
- },
- );
- # AdobeCM APP13 (no references)
- %Image::ExifTool::JPEG::AdobeCM = (
- PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
- GROUPS => { 0 => 'APP13', 1 => 'AdobeCM', 2 => 'Image' },
- NOTES => q{
- The "Adobe_CM" APP13 segment presumably contains color management
- information, but the meaning of the data is currently unknown. If anyone
- has an idea about what this means, please let me know.
- },
- FORMAT => 'int16u',
- 0 => 'AdobeCMType',
- );
- # Adobe APP14 refs:
- # http://partners.adobe.com/public/developer/en/ps/sdk/5116.DCT_Filter.pdf
- # http://java.sun.com/j2se/1.5.0/docs/api/javax/imageio/metadata/doc-files/jpeg_metadata.html#color
- %Image::ExifTool::JPEG::Adobe = (
- PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
- GROUPS => { 0 => 'APP14', 1 => 'Adobe', 2 => 'Image' },
- NOTES => q{
- The "Adobe" APP14 segment stores image encoding information for DCT filters.
- This segment may be copied or deleted as a block using the Extra "Adobe"
- tag, but note that it is not deleted by default when deleting all metadata
- because it may affect the appearance of the image.
- },
- FORMAT => 'int16u',
- 0 => 'DCTEncodeVersion',
- 1 => {
- Name => 'APP14Flags0',
- PrintConv => {
- 0 => '(none)',
- BITMASK => {
- 15 => 'Encoded with Blend=1 downsampling'
- },
- },
- },
- 2 => {
- Name => 'APP14Flags1',
- PrintConv => {
- 0 => '(none)',
- BITMASK => { },
- },
- },
- 3 => {
- Name => 'ColorTransform',
- Format => 'int8u',
- PrintConv => {
- 0 => 'Unknown (RGB or CMYK)',
- 1 => 'YCbCr',
- 2 => 'YCCK',
- },
- },
- );
- # GraphicConverter APP15 (ref PH)
- %Image::ExifTool::JPEG::GraphConv = (
- GROUPS => { 0 => 'APP15', 1 => 'GraphConv', 2 => 'Image' },
- NOTES => 'APP15 is used by GraphicConverter to store JPEG quality.',
- 'Q' => 'Quality',
- );
- # AVI1 APP0 segment (ref http://www.schnarff.com/file-formats/bmp/BMPDIB.TXT)
- %Image::ExifTool::JPEG::AVI1 = (
- PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
- GROUPS => { 0 => 'APP0', 1 => 'AVI1', 2 => 'Image' },
- NOTES => 'This information may be found in APP0 of JPEG image data from AVI videos.',
- FIRST_ENTRY => 0,
- 0 => {
- Name => 'InterleavedField',
- PrintConv => {
- 0 => 'Not Interleaved',
- 1 => 'Odd',
- 2 => 'Even',
- },
- },
- );
- # Ocad APP0 segment (ref PH)
- %Image::ExifTool::JPEG::Ocad = (
- PROCESS_PROC => \&ProcessOcad,
- GROUPS => { 0 => 'APP0', 1 => 'Ocad', 2 => 'Image' },
- TAG_PREFIX => 'Ocad',
- FIRST_ENTRY => 0,
- NOTES => q{
- Tags extracted from the JPEG APP0 "Ocad" segment (found in Photobucket
- images).
- },
- Rev => {
- Name => 'OcadRevision',
- Format => 'string[6]',
- }
- );
- # NITF APP6 segment (National Imagery Transmission Format)
- # ref http://www.gwg.nga.mil/ntb/baseline/docs/n010697/bwcguide25aug98.pdf
- %Image::ExifTool::JPEG::NITF = (
- PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
- GROUPS => { 0 => 'APP6', 1 => 'NITF', 2 => 'Image' },
- NOTES => q{
- Information in APP6 used by the National Imagery Transmission Format. See
- L<http://www.gwg.nga.mil/ntb/baseline/docs/n010697/bwcguide25aug98.pdf> for
- the official specification.
- },
- 0 => {
- Name => 'NITFVersion',
- Format => 'int8u[2]',
- ValueConv => 'sprintf("%d.%.2d", split(" ",$val))',
- },
- 2 => {
- Name => 'ImageFormat',
- ValueConv => 'chr($val)',
- PrintConv => { B => 'IMode B' },
- },
- 3 => {
- Name => 'BlocksPerRow',
- Format => 'int16u',
- },
- 5 => {
- Name => 'BlocksPerColumn',
- Format => 'int16u',
- },
- 7 => {
- Name => 'ImageColor',
- PrintConv => { 0 => 'Monochrome' },
- },
- 8 => 'BitDepth',
- 9 => {
- Name => 'ImageClass',
- PrintConv => {
- 0 => 'General Purpose',
- 4 => 'Tactical Imagery',
- },
- },
- 10 => {
- Name => 'JPEGProcess',
- PrintConv => {
- 1 => 'Baseline sequential DCT, Huffman coding, 8-bit samples',
- 4 => 'Extended sequential DCT, Huffman coding, 12-bit samples',
- },
- },
- 11 => 'Quality',
- 12 => {
- Name => 'StreamColor',
- PrintConv => { 0 => 'Monochrome' },
- },
- 13 => 'StreamBitDepth',
- 14 => {
- Name => 'Flags',
- Format => 'int32u',
- PrintConv => 'sprintf("0x%x", $val)',
- },
- );
- #------------------------------------------------------------------------------
- # Extract information from the JPEG APP0 Ocad segment
- # Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
- # Returns: 1 on success
- sub ProcessOcad($$$)
- {
- my ($et, $dirInfo, $tagTablePtr) = @_;
- my $dataPt = $$dirInfo{DataPt};
- $et->VerboseDir('APP0 Ocad', undef, length $$dataPt);
- for (;;) {
- last unless $$dataPt =~ /\$(\w+):([^\0\$]+)/g;
- my ($tag, $val) = ($1, $2);
- $val =~ s/^\s+//; $val =~ s/\s+$//; # remove leading/trailing spaces
- AddTagToTable($tagTablePtr, $tag) unless $$tagTablePtr{$tag};
- $et->HandleTag($tagTablePtr, $tag, $val);
- }
- return 1;
- }
- #------------------------------------------------------------------------------
- # Extract information from the JPEG APP0 Ocad segment
- # Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
- # Returns: 1 on success
- sub ProcessJPEG_HDR($$$)
- {
- my ($et, $dirInfo, $tagTablePtr) = @_;
- my $dataPt = $$dirInfo{DataPt};
- $$dataPt =~ /~\0/g or $et->Warn('Unrecognized JPEG-HDR format'), return 0;
- my $pos = pos $$dataPt;
- my $meta = substr($$dataPt, 7, $pos-9);
- $et->VerboseDir('APP11 JPEG-HDR', undef, length $$dataPt);
- while ($meta =~ /(\w+)=([^,\s]*)/g) {
- my ($tag, $val) = ($1, $2);
- AddTagToTable($tagTablePtr, $tag) unless $$tagTablePtr{$tag};
- $et->HandleTag($tagTablePtr, $tag, $val);
- }
- $et->HandleTag($tagTablePtr, 'RatioImage', substr($$dataPt, $pos));
- return 1;
- }
- 1; # end
- __END__
- =head1 NAME
- Image::ExifTool::JPEG - Definitions for uncommon JPEG segments
- =head1 SYNOPSIS
- This module is used by Image::ExifTool
- =head1 DESCRIPTION
- This module contains definitions required by Image::ExifTool for some
- uncommon JPEG segments. For speed reasons, definitions for more common JPEG
- segments are included in the Image::ExifTool module itself.
- =head1 AUTHOR
- Copyright 2003-2016, 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/JPEG Tags>,
- L<Image::ExifTool(3pm)|Image::ExifTool>
- =cut
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