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// =================================================================================================
// 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 "XMP_Environment.h" // ! This must be the first include.
#include "ReconcileLegacy.hpp"
#include "Reconcile_Impl.hpp"
// =================================================================================================
/// \file ReconcileLegacy.cpp
/// \brief Top level parts of utilities to reconcile between XMP and legacy metadata forms such as
/// TIFF/Exif and IPTC.
///
// =================================================================================================
// =================================================================================================
// ImportPhotoData
// ===============
//
// Import legacy metadata for JPEG, TIFF, and Photoshop files into the 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.
#define SaveExifTag(ns,prop) \
if ( xmp->DoesPropertyExist ( ns, prop ) ) SXMPUtils::DuplicateSubtree ( *xmp, &savedExif, ns, prop )
#define RestoreExifTag(ns,prop) \
if ( savedExif.DoesPropertyExist ( ns, prop ) ) SXMPUtils::DuplicateSubtree ( savedExif, xmp, ns, prop )
void ImportPhotoData ( const TIFF_Manager & exif,
const IPTC_Manager & iptc,
const PSIR_Manager & psir,
int iptcDigestState,
SXMPMeta * xmp,
XMP_OptionBits options /* = 0 */ )
{
bool haveXMP = XMP_OptionIsSet ( options, k2XMP_FileHadXMP );
bool haveExif = XMP_OptionIsSet ( options, k2XMP_FileHadExif );
bool haveIPTC = XMP_OptionIsSet ( options, k2XMP_FileHadIPTC );
// Save some new Exif writebacks that can be XMP-only from older versions, delete all of the
// XMP's tiff: and exif: namespaces (they should only reflect native Exif), then put back the
// saved writebacks (which might get replaced by the native Exif values in the Import calls).
// The value of exif:ISOSpeedRatings is saved for special case handling of ISO over 65535.
SXMPMeta savedExif;
SaveExifTag ( kXMP_NS_EXIF, "DateTimeOriginal" );
SaveExifTag ( kXMP_NS_EXIF, "GPSLatitude" );
SaveExifTag ( kXMP_NS_EXIF, "GPSLongitude" );
SaveExifTag ( kXMP_NS_EXIF, "GPSTimeStamp" );
SaveExifTag ( kXMP_NS_EXIF, "GPSAltitude" );
SaveExifTag ( kXMP_NS_EXIF, "GPSAltitudeRef" );
SaveExifTag ( kXMP_NS_EXIF, "ISOSpeedRatings" );
SXMPUtils::RemoveProperties ( xmp, kXMP_NS_TIFF, 0, kXMPUtil_DoAllProperties );
SXMPUtils::RemoveProperties ( xmp, kXMP_NS_EXIF, 0, kXMPUtil_DoAllProperties );
RestoreExifTag ( kXMP_NS_EXIF, "DateTimeOriginal" );
RestoreExifTag ( kXMP_NS_EXIF, "GPSLatitude" );
RestoreExifTag ( kXMP_NS_EXIF, "GPSLongitude" );
RestoreExifTag ( kXMP_NS_EXIF, "GPSTimeStamp" );
RestoreExifTag ( kXMP_NS_EXIF, "GPSAltitude" );
RestoreExifTag ( kXMP_NS_EXIF, "GPSAltitudeRef" );
RestoreExifTag ( kXMP_NS_EXIF, "ISOSpeedRatings" );
// Not obvious here, but the logic in PhotoDataUtils follows the MWG reader guidelines.
PhotoDataUtils::ImportPSIR ( psir, xmp, iptcDigestState );
if ( haveIPTC ) PhotoDataUtils::Import2WayIPTC ( iptc, xmp, iptcDigestState );
if ( haveExif ) PhotoDataUtils::Import2WayExif ( exif, xmp, iptcDigestState );
if ( haveExif | haveIPTC ) PhotoDataUtils::Import3WayItems ( exif, iptc, xmp, iptcDigestState );
// If photoshop:DateCreated does not exist try to create it from exif:DateTimeOriginal.
if ( ! xmp->DoesPropertyExist ( kXMP_NS_Photoshop, "DateCreated" ) ) {
std::string exifValue;
bool haveExifDTO = xmp->GetProperty ( kXMP_NS_EXIF, "DateTimeOriginal", &exifValue, 0 );
if ( haveExifDTO ) xmp->SetProperty ( kXMP_NS_Photoshop, "DateCreated", exifValue.c_str() );
}
} // ImportPhotoData
// =================================================================================================
// ExportPhotoData
// ===============
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 */ )
{
XMP_Assert ( (destFormat == kXMP_JPEGFile) || (destFormat == kXMP_TIFFFile) || (destFormat == kXMP_PhotoshopFile) );
// Do not write IPTC-IIM or PSIR in DNG files (which are a variant of TIFF).
if ( (destFormat == kXMP_TIFFFile) && (exif != 0) &&
exif->GetTag ( kTIFF_PrimaryIFD, kTIFF_DNGVersion, 0 ) ) {
iptc = 0; // These prevent calls to ExportIPTC and ExportPSIR.
psir = 0;
exif->DeleteTag ( kTIFF_PrimaryIFD, kTIFF_IPTC ); // These remove any existing IPTC and PSIR.
exif->DeleteTag ( kTIFF_PrimaryIFD, kTIFF_PSIR );
}
// Export the individual metadata items to the non-XMP forms. Set the IPTC digest whether or not
// it changed, it might not have been present or correct before.
bool iptcChanged = false; // Save explicitly, internal flag is reset by UpdateMemoryDataSets.
void * iptcPtr = 0;
XMP_Uns32 iptcLen = 0;
if ( iptc != 0 ) {
PhotoDataUtils::ExportIPTC ( *xmp, iptc );
iptcChanged = iptc->IsChanged();
if ( iptcChanged ) iptc->UpdateMemoryDataSets();
iptcLen = iptc->GetBlockInfo ( &iptcPtr );
if ( psir != 0 ) PhotoDataUtils::SetIPTCDigest ( iptcPtr, iptcLen, psir );
}
if ( exif != 0 ) PhotoDataUtils::ExportExif ( xmp, exif );
if ( psir != 0 ) PhotoDataUtils::ExportPSIR ( *xmp, psir );
// Now update the non-XMP collections of metadata according to the file format. Do not update
// the XMP here, that is done in the file handlers after deciding if an XMP-only in-place
// update should be done.
// - JPEG has the IPTC in PSIR 1028, the Exif and PSIR are marker segments.
// - TIFF has the IPTC and PSIR in primary IFD tags.
// - PSD has everything in PSIRs.
if ( destFormat == kXMP_JPEGFile ) {
if ( iptcChanged && (psir != 0) ) psir->SetImgRsrc ( kPSIR_IPTC, iptcPtr, iptcLen );
} else if ( destFormat == kXMP_TIFFFile ) {
XMP_Assert ( exif != 0 );
if ( iptcChanged ) exif->SetTag ( kTIFF_PrimaryIFD, kTIFF_IPTC, kTIFF_UndefinedType, iptcLen, iptcPtr );
if ( (psir != 0) && psir->IsChanged() ) {
void* psirPtr;
XMP_Uns32 psirLen = psir->UpdateMemoryResources ( &psirPtr );
exif->SetTag ( kTIFF_PrimaryIFD, kTIFF_PSIR, kTIFF_UndefinedType, psirLen, psirPtr );
}
} else if ( destFormat == kXMP_PhotoshopFile ) {
XMP_Assert ( psir != 0 );
if ( iptcChanged ) psir->SetImgRsrc ( kPSIR_IPTC, iptcPtr, iptcLen );
if ( (exif != 0) && exif->IsChanged() ) {
void* exifPtr;
XMP_Uns32 exifLen = exif->UpdateMemoryStream ( &exifPtr );
psir->SetImgRsrc ( kPSIR_Exif, exifPtr, exifLen );
}
}
// Strip the tiff: and exif: namespaces from the XMP, we're done with them. Save the Exif
// ISOSpeedRatings if any of the values are over 0xFFFF, the native tag is SHORT. Lower level
// code already kept or stripped the XMP form.
SXMPMeta savedExif;
SaveExifTag ( kXMP_NS_EXIF, "ISOSpeedRatings" );
SXMPUtils::RemoveProperties ( xmp, kXMP_NS_TIFF, 0, kXMPUtil_DoAllProperties );
SXMPUtils::RemoveProperties ( xmp, kXMP_NS_EXIF, 0, kXMPUtil_DoAllProperties );
RestoreExifTag ( kXMP_NS_EXIF, "ISOSpeedRatings" );
} // ExportPhotoData
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