// parsing creation
Chunk::Chunk( ContainerChunk* parent_, RIFF_MetaHandler* handler, bool skip, ChunkType c )
{
chunkType = c; // base class assumption
this->parent = parent_;
this->oldSize = 0;
this->hasChange = false; // [2414649] valid assumption at creation time
XMP_IO* file = handler->parent->ioRef;
this->oldPos = file->Offset();
this->id = XIO::ReadUns32_LE( file );
this->oldSize = XIO::ReadUns32_LE( file );
this->oldSize += 8;
// Make sure the size is within expected bounds.
XMP_Int64 chunkEnd = this->oldPos + this->oldSize;
XMP_Int64 chunkLimit = handler->oldFileSize;
if ( parent_ != 0 ) chunkLimit = parent_->oldPos + parent_->oldSize;
if ( chunkEnd > chunkLimit ) {
bool isUpdate = XMP_OptionIsSet ( handler->parent->openFlags, kXMPFiles_OpenForUpdate );
bool repairFile = XMP_OptionIsSet ( handler->parent->openFlags, kXMPFiles_OpenRepairFile );
if ( (! isUpdate) || (repairFile && (parent_ == 0)) ) {
this->oldSize = chunkLimit - this->oldPos;
} else {
XMP_Throw ( "Bad RIFF chunk size", kXMPErr_BadFileFormat );
}
}
this->newSize = this->oldSize;
this->needSizeFix = false;
if ( skip ) file->Seek ( (this->oldSize - 8), kXMP_SeekFromCurrent );
// "good parenting", essential for latter destruction.
if ( this->parent != NULL )
{
this->parent->children.push_back( this );
if( this->chunkType == chunk_VALUE )
this->parent->childmap.insert( std::make_pair( this->id, (ValueChunk*) this ) );
}
}
void ImportJTPtoXMP ( XMP_FileFormat srcFormat,
RecJTP_LegacyPriority lastLegacy,
TIFF_Manager * tiff, // ! Need for UserComment and RelatedSoundFile hack.
const PSIR_Manager & psir,
IPTC_Manager * iptc, // ! Need to call UpdateDataSets.
SXMPMeta * xmp,
XMP_OptionBits options /* = 0 */ )
{
bool haveXMP = XMP_OptionIsSet ( options, k2XMP_FileHadXMP );
bool haveIPTC = XMP_OptionIsSet ( options, k2XMP_FileHadIPTC );
bool haveExif = XMP_OptionIsSet ( options, k2XMP_FileHadExif );
int iptcDigestState = kDigestMatches; // Default is to do no imports.
int tiffDigestState = kDigestMatches;
int exifDigestState = kDigestMatches;
if ( ! haveXMP ) {
// If there is no XMP then what we have differs.
if ( haveIPTC) iptcDigestState = kDigestDiffers;
if ( haveExif ) tiffDigestState = exifDigestState = kDigestDiffers;
} else {
// If there is XMP then check the digests for what we have. No legacy at all means the XMP
// is OK, and the CheckXyzDigest routines return true when there is no digest. This matches
// Photoshop, and avoids importing when an app adds XMP but does not export to the legacy or
// write a digest.
if ( haveIPTC ) iptcDigestState = ReconcileUtils::CheckIPTCDigest ( iptc, psir );
if ( iptcDigestState == kDigestMissing ) {
// *** Temporary hack to approximate Photoshop's behavior. Need fully documented policies!
tiffDigestState = exifDigestState = kDigestMissing;
} else if ( haveExif ) {
tiffDigestState = ReconcileUtils::CheckTIFFDigest ( *tiff, *xmp );
exifDigestState = ReconcileUtils::CheckExifDigest ( *tiff, *xmp ); // ! Yes, the Exif is in the TIFF stream.
}
}
if ( lastLegacy > kLegacyJTP_TIFF_IPTC ) {
XMP_Throw ( "Invalid JTP legacy priority", kXMPErr_InternalFailure );
}
// A TIFF file with tags 270, 315, or 33432 is currently the only case where the IPTC is less
// important than the TIFF/Exif. If there is no IPTC or no TIFF/Exif then the order does not
// matter. The order only affects collisions between those 3 TIFF tags and their IPTC counterparts.
if ( lastLegacy == kLegacyJTP_TIFF_TIFF_Tags ) {
if ( iptcDigestState != kDigestMatches ) {
ReconcileUtils::ImportIPTC ( *iptc, xmp, iptcDigestState );
ReconcileUtils::ImportPSIR ( psir, xmp, iptcDigestState );
}
if ( tiffDigestState != kDigestMatches ) ReconcileUtils::ImportTIFF ( *tiff, xmp, tiffDigestState, srcFormat );
if ( exifDigestState != kDigestMatches ) ReconcileUtils::ImportExif ( *tiff, xmp, exifDigestState );
} else {
if ( tiffDigestState != kDigestMatches ) ReconcileUtils::ImportTIFF ( *tiff, xmp, tiffDigestState, srcFormat );
if ( exifDigestState != kDigestMatches ) ReconcileUtils::ImportExif ( *tiff, xmp, exifDigestState );
if ( iptcDigestState != kDigestMatches ) {
ReconcileUtils::ImportIPTC ( *iptc, xmp, iptcDigestState );
ReconcileUtils::ImportPSIR ( psir, xmp, iptcDigestState );
}
}
// ! Older versions of Photoshop did not import the UserComment or RelatedSoundFile tags. Note
// ! whether the initial XMP has these tags. Don't delete them from the TIFF when saving unless
// ! they were in the XMP to begin with. Can't do this in ReconcileUtils::ImportExif, that is
// ! only called when the Exif is newer than the XMP.
tiff->xmpHadUserComment = xmp->DoesPropertyExist ( kXMP_NS_EXIF, "UserComment" );
tiff->xmpHadRelatedSoundFile = xmp->DoesPropertyExist ( kXMP_NS_EXIF, "RelatedSoundFile" );
} // ImportJTPtoXMP