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diff --git a/XMPFiles/source/FormatSupport/ReconcileLegacy.hpp b/XMPFiles/source/FormatSupport/ReconcileLegacy.hpp new file mode 100644 index 0000000..16333a3 --- /dev/null +++ b/XMPFiles/source/FormatSupport/ReconcileLegacy.hpp @@ -0,0 +1,272 @@ +#ifndef __ReconcileLegacy_hpp__ +#define __ReconcileLegacy_hpp__ 1 + +// ================================================================================================= +// ADOBE SYSTEMS INCORPORATED +// Copyright 2006 Adobe Systems Incorporated +// All Rights Reserved +// +// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms +// of the Adobe license agreement accompanying it. +// ================================================================================================= + +#include "public/include/XMP_Environment.h" // ! This must be the first include. + +#include "XMPFiles/source/FormatSupport/TIFF_Support.hpp" +#include "XMPFiles/source/FormatSupport/PSIR_Support.hpp" +#include "XMPFiles/source/FormatSupport/IPTC_Support.hpp" + +// ================================================================================================= +/// \file ReconcileLegacy.hpp +/// \brief Utilities to reconcile between XMP and photo metadata forms such as TIFF/Exif and IPTC. +/// +// ================================================================================================= + +// ImportPhotoData imports TIFF/Exif and IPTC metadata from JPEG, TIFF, and Photoshop files into +// XMP. The caller must have already done the file specific processing to select the appropriate +// sources of the TIFF stream, the Photoshop image resources, and the IPTC. +// +// The reconciliation logic used here is based on the Metadata Working Group guidelines. This is a +// simpler approach than used previously - which was modeled after historical Photoshop behavior. + +enum { // Bits for the options to ImportJTPtoXMP. + k2XMP_FileHadXMP = 0x0001, // Set if the file had an XMP packet. + k2XMP_FileHadIPTC = 0x0002, // Set if the file had legacy IPTC. + k2XMP_FileHadExif = 0x0004 // Set if the file had legacy Exif. +}; + +extern void ImportPhotoData ( const TIFF_Manager & exif, + const IPTC_Manager & iptc, + const PSIR_Manager & psir, + int iptcDigestState, + SXMPMeta * xmp, + XMP_OptionBits options = 0 ); + +// ExportPhotoData exports XMP into TIFF/Exif and IPTC metadata for JPEG, TIFF, and Photoshop files. + +extern void ExportPhotoData ( XMP_FileFormat destFormat, + SXMPMeta * xmp, + TIFF_Manager * exif, // Pass 0 if not wanted. + IPTC_Manager * iptc, // Pass 0 if not wanted. + PSIR_Manager * psir, // Pass 0 if not wanted. + XMP_OptionBits options = 0 ); + +// *** Mapping notes need revision for MWG related changes. + +// ================================================================================================= +// Summary of TIFF/Exif mappings to XMP +// ==================================== +// +// The mapping for each tag is driven mainly by the tag ID, and secondarily by the type. E.g. there +// is no blanket rule that all ASCII tags are mapped to simple strings in XMP. Some, such as +// SubSecTime or GPSLatitudeRef, are combined with other tags; others, like Flash, are reformated. +// However, most tags are in fact mapped in an obvious manner based on their type and count. +// +// Photoshop practice has been to truncate ASCII tags at the first NUL, not supporting the TIFF +// specification's notion of multi-part ASCII values. +// +// Rational values are mapped to XMP as "num/denom". +// +// The tags of UNDEFINED type that are mapped to XMP text are either special cases like ExifVersion +// or the strings with an explicit encoding like UserComment. +// +// Latitude and logitude are mapped to XMP as "DDD,MM,SSk" or "DDD,MM.mmk"; k is N, S, E, or W. +// +// Flash struct in XMP separates the Fired, Return, Mode, Function, and RedEyeMode portions of the +// Exif value. Fired, Function, and RedEyeMode are Boolean; Return and Mode are integers. +// +// The OECF/SFR, CFA, and DeviceSettings tables are described in the XMP spec. +// +// Instead of iterating through all tags in the various IFDs, it is probably more efficient to have +// explicit processing for the tags that get special treatment, and a static table listing those +// that get mapped by type and count. The type and count processing will verify that the actual +// type and count are as expected, if not the tag is ignored. +// +// Here are the primary (0th) IFD tags that get special treatment: +// +// 270, 33432 - ASCII mapped to alt-text['x-default'] +// 306 - DateTime master +// 315 - ASCII mapped to text seq[1] +// +// Here are the primary (0th) IFD tags that get mapped by type and count: +// +// 256, 257, 258, 259, 262, 271, 272, 274, 277, 282, 283, 284, 296, 301, 305, 318, 319, +// 529, 530, 531, 532 +// +// Here are the Exif IFD tags that get special treatment: +// +// 34856, 41484 - OECF/SFR table +// 36864, 40960 - 4 ASCII chars to text +// 36867, 36868 - DateTime master +// 37121 - 4 UInt8 to integer seq +// 37385 - Flash struct +// 37510 - explicitly encoded text to alt-text['x-default'] +// 41728, 41729 - UInt8 to integer +// 41730 - CFA table +// 41995 - DeviceSettings table +// +// Here are the Exif IFD tags that get mapped by type and count: +// +// 33434, 33437, 34850, 34852, 34855, 37122, 37377, 37378, 37379, 37380, 37381, 37382, 37383, 37384, +// 37386, 37396, 40961, 40962, 40963, 40964, 41483, 41486, 41487, 41488, 41492, 41493, 41495, 41985, +// 41986, 41987, 41988, 41989, 41990, 41991, 41992, 41993, 41994, 41996, 42016 +// +// Here are the GPS IFD tags that get special treatment: +// +// 0 - 4 UInt8 to text "n.n.n.n" +// 2, 4, 20, 22 - Latitude or longitude master +// 7 - special DateTime master, the time part +// 27, 28 - explicitly encoded text +// +// Here are the GPS IFD tags that get mapped by type and count: +// +// 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 23, 24, 25, 26, 30 +// ================================================================================================= + +// *** What about the Camera Raw tags that MDKit maps: +// *** 0xFDE8, 0xFDE9, 0xFDEA, 0xFE4C, 0xFE4D, 0xFE4E, 0xFE4F, 0xFE50, 0xFE51, 0xFE52, 0xFE53, +// *** 0xFE54, 0xFE55, 0xFE56, 0xFE57, 0xFE58 + +// ================================================================================================= +// Summary of TIFF/Exif mappings from XMP +// ====================================== +// +// Only a small number of properties are written back from XMP to TIFF/Exif. Most of the TIFF/Exif +// tags mapped into XMP are information about the image or capture process, not things that users +// should be editing. The tags that can be edited and written back to TIFF/Exif are: +// +// 270, 274, 282, 283, 296, 305, 306, 315, 33432; 36867, 36868, 37510, 40964 +// ================================================================================================= + +// ================================================================================================= +// Details of TIFF/Exif mappings +// ============================= +// +// General (primary and thumbnail, 0th and 1st) IFD tags +// tag TIFF type count Name XMP mapping +// +// 256 SHORTorLONG 1 ImageWidth integer +// 257 SHORTorLONG 1 ImageLength integer +// 258 SHORT 3 BitsPerSample integer seq +// 259 SHORT 1 Compression integer +// 262 SHORT 1 PhotometricInterpretation integer +// 270 ASCII Any ImageDescription text, dc:description['x-default'] +// 271 ASCII Any Make text +// 272 ASCII Any Model text +// 274 SHORT 1 Orientation integer +// 277 SHORT 1 SamplesPerPixel integer +// 282 RATIONAL 1 XResolution rational +// 283 RATIONAL 1 YResolution rational +// 284 SHORT 1 PlanarConfiguration integer +// 296 SHORT 1 ResolutionUnit integer +// 301 SHORT 3*256 TransferFunction integer seq +// 305 ASCII Any Software text, xmp:CreatorTool +// 306 ASCII 20 DateTime date, master of 37520, xmp:DateTime +// 315 ASCII Any Artist text, dc:creator[1] +// 318 RATIONAL 2 WhitePoint rational seq +// 319 RATIONAL 6 PrimaryChromaticities rational seq +// 529 RATIONAL 3 YCbCrCoefficients rational seq +// 530 SHORT 2 YCbCrSubSampling integer seq +// 531 SHORT 1 YCbCrPositioning integer +// 532 RATIONAL 6 ReferenceBlackWhite rational seq +// 33432 ASCII Any Copyright text, dc:rights['x-default'] +// +// Exif IFD tags +// tag TIFF type count Name XMP mapping +// +// 33434 RATIONAL 1 ExposureTime rational +// 33437 RATIONAL 1 FNumber rational +// 34850 SHORT 1 ExposureProgram integer +// 34852 ASCII Any SpectralSensitivity text +// 34855 SHORT Any ISOSpeedRatings integer seq +// 34856 UNDEFINED Any OECF OECF/SFR table +// 36864 UNDEFINED 4 ExifVersion text, Exif has 4 ASCII chars +// 36867 ASCII 20 DateTimeOriginal date, master of 37521 +// 36868 ASCII 20 DateTimeDigitized date, master of 37522 +// 37121 UNDEFINED 4 ComponentsConfiguration integer seq, Exif has 4 UInt8 +// 37122 RATIONAL 1 CompressedBitsPerPixel rational +// 37377 SRATIONAL 1 ShutterSpeedValue rational +// 37378 RATIONAL 1 ApertureValue rational +// 37379 SRATIONAL 1 BrightnessValue rational +// 37380 SRATIONAL 1 ExposureBiasValue rational +// 37381 RATIONAL 1 MaxApertureValue rational +// 37382 RATIONAL 1 SubjectDistance rational +// 37383 SHORT 1 MeteringMode integer +// 37384 SHORT 1 LightSource integer +// 37385 SHORT 1 Flash Flash struct +// 37386 RATIONAL 1 FocalLength rational +// 37396 SHORT 2..4 SubjectArea integer seq +// 37510 UNDEFINED Any UserComment text, explicit encoding, exif:UserComment['x-default] +// 37520 ASCII Any SubSecTime date, with 306 +// 37521 ASCII Any SubSecTimeOriginal date, with 36867 +// 37522 ASCII Any SubSecTimeDigitized date, with 36868 +// 40960 UNDEFINED 4 FlashpixVersion text, Exif has 4 ASCII chars +// 40961 SHORT 1 ColorSpace integer +// 40962 SHORTorLONG 1 PixelXDimension integer +// 40963 SHORTorLONG 1 PixelYDimension integer +// 40964 ASCII 13 RelatedSoundFile text +// 41483 RATIONAL 1 FlashEnergy rational +// 41484 UNDEFINED Any SpatialFrequencyResponse OECF/SFR table +// 41486 RATIONAL 1 FocalPlaneXResolution rational +// 41487 RATIONAL 1 FocalPlaneYResolution rational +// 41488 SHORT 1 FocalPlaneResolutionUnit integer +// 41492 SHORT 2 SubjectLocation integer seq +// 41493 RATIONAL 1 ExposureIndex rational +// 41495 SHORT 1 SensingMethod integer +// 41728 UNDEFINED 1 FileSource integer, Exif has UInt8 +// 41729 UNDEFINED 1 SceneType integer, Exif has UInt8 +// 41730 UNDEFINED Any CFAPattern CFA table +// 41985 SHORT 1 CustomRendered integer +// 41986 SHORT 1 ExposureMode integer +// 41987 SHORT 1 WhiteBalance integer +// 41988 RATIONAL 1 DigitalZoomRatio rational +// 41989 SHORT 1 FocalLengthIn35mmFilm integer +// 41990 SHORT 1 SceneCaptureType integer +// 41991 SHORT 1 GainControl integer +// 41992 SHORT 1 Contrast integer +// 41993 SHORT 1 Saturation integer +// 41994 SHORT 1 Sharpness integer +// 41995 UNDEFINED Any DeviceSettingDescription DeviceSettings table +// 41996 SHORT 1 SubjectDistanceRange integer +// 42016 ASCII 33 ImageUniqueID text +// +// GPS IFD tags +// tag TIFF type count Name XMP mapping +// +// 0 BYTE 4 GPSVersionID text, "n.n.n.n", Exif has 4 UInt8 +// 1 ASCII 2 GPSLatitudeRef latitude, with 2 +// 2 RATIONAL 3 GPSLatitude latitude, master of 2 +// 3 ASCII 2 GPSLongitudeRef longitude, with 4 +// 4 RATIONAL 3 GPSLongitude longitude, master of 3 +// 5 BYTE 1 GPSAltitudeRef integer +// 6 RATIONAL 1 GPSAltitude rational +// 7 RATIONAL 3 GPSTimeStamp date, master of 29 +// 8 ASCII Any GPSSatellites text +// 9 ASCII 2 GPSStatus text +// 10 ASCII 2 GPSMeasureMode text +// 11 RATIONAL 1 GPSDOP rational +// 12 ASCII 2 GPSSpeedRef text +// 13 RATIONAL 1 GPSSpeed rational +// 14 ASCII 2 GPSTrackRef text +// 15 RATIONAL 1 GPSTrack rational +// 16 ASCII 2 GPSImgDirectionRef text +// 17 RATIONAL 1 GPSImgDirection rational +// 18 ASCII Any GPSMapDatum text +// 19 ASCII 2 GPSDestLatitudeRef latitude, with 20 +// 20 RATIONAL 3 GPSDestLatitude latitude, master of 19 +// 21 ASCII 2 GPSDestLongitudeRef longitude, with 22 +// 22 RATIONAL 3 GPSDestLongitude logitude, master of 21 +// 23 ASCII 2 GPSDestBearingRef text +// 24 RATIONAL 1 GPSDestBearing rational +// 25 ASCII 2 GPSDestDistanceRef text +// 26 RATIONAL 1 GPSDestDistance rational +// 27 UNDEFINED Any GPSProcessingMethod text, explicit encoding +// 28 UNDEFINED Any GPSAreaInformation text, explicit encoding +// 29 ASCII 11 GPSDateStamp date, with 29 +// 30 SHORT 1 GPSDifferential integer +// +// ================================================================================================= + +// ================================================================================================= + +#endif // #ifndef __ReconcileLegacy_hpp__ |