File indexing completed on 2024-12-22 04:16:02

 /*
  *  SPDX-FileCopyrightText: 2007 Cyrille Berger <cberger@cberger.net>
  *  SPDX-FileCopyrightText: 2021 L. E. Segovia <amy@amyspark.me>
  *
  *  SPDX-License-Identifier: LGPL-2.0-or-later
  */
 
 #include "kis_exif_io.h"
 
 #include <exiv2/error.hpp>
 #include <exiv2/exif.hpp>
 
 #include <QByteArray>
 #include <QDate>
 #include <QDateTime>
 #include <QIODevice>
 #include <QTextCodec>
 #include <QTime>
 #include <QVariant>
 #include <QtEndian>
 
 #include <kis_debug.h>
 #include <kis_exiv2_common.h>
 #include <kis_meta_data_entry.h>
 #include <kis_meta_data_schema.h>
 #include <kis_meta_data_schema_registry.h>
 #include <kis_meta_data_store.h>
 #include <kis_meta_data_tags.h>
 #include <kis_meta_data_value.h>
 
 // ---- Exception conversion functions ---- //
 
 // convert ExifVersion and FlashpixVersion to a KisMetaData value
 #if EXIV2_TEST_VERSION(0,28,0)
 KisMetaData::Value exifVersionToKMDValue(const Exiv2::Value::UniquePtr value)
 #else
 KisMetaData::Value exifVersionToKMDValue(const Exiv2::Value::AutoPtr value)
 #endif
 {
     const Exiv2::DataValue *dvalue = dynamic_cast<const Exiv2::DataValue *>(&*value);
     if (dvalue) {
         Q_ASSERT(dvalue);
         QByteArray array(dvalue->count(), 0);
         dvalue->copy((Exiv2::byte *)array.data());
         return KisMetaData::Value(QString(array));
     } else {
         Q_ASSERT(value->typeId() == Exiv2::asciiString);
         return KisMetaData::Value(QString::fromLatin1(value->toString().c_str()));
     }
 }
 
 // convert from KisMetaData value to ExifVersion and FlashpixVersion
 Exiv2::Value *kmdValueToExifVersion(const KisMetaData::Value &value)
 {
     Exiv2::DataValue *dvalue = new Exiv2::DataValue;
     QString ver = value.asVariant().toString();
     dvalue->read((const Exiv2::byte *)ver.toLatin1().constData(), ver.size());
     return dvalue;
 }
 
 // Convert an exif array of integer string to a KisMetaData array of integer
 #if EXIV2_TEST_VERSION(0,28,0)
 KisMetaData::Value exifArrayToKMDIntOrderedArray(const Exiv2::Value::UniquePtr value)
 #else
 KisMetaData::Value exifArrayToKMDIntOrderedArray(const Exiv2::Value::AutoPtr value)
 #endif
 {
     QList<KisMetaData::Value> v;
     const Exiv2::DataValue *dvalue = dynamic_cast<const Exiv2::DataValue *>(&*value);
     if (dvalue) {
 #if EXIV2_TEST_VERSION(0,28,0)
         for (size_t i = 0; i < dvalue->count(); i++) {
             v.push_back({(int)dvalue->toUint32(i)});
 #else
         for (long i = 0; i < dvalue->count(); i++) {
             v.push_back({(int)dvalue->toLong(i)});
 #endif
         }
     } else {
         Q_ASSERT(value->typeId() == Exiv2::asciiString);
         QString str = QString::fromLatin1(value->toString().c_str());
         v.push_back(KisMetaData::Value(str.toInt()));
     }
     return KisMetaData::Value(v, KisMetaData::Value::OrderedArray);
 }
 
 // Convert a KisMetaData array of integer to an exif array of integer string
 Exiv2::Value *kmdIntOrderedArrayToExifArray(const KisMetaData::Value &value)
 {
     std::vector<Exiv2::byte> v;
     for (const KisMetaData::Value &it : value.asArray()) {
         v.push_back(static_cast<uint8_t>(it.asVariant().toInt(0)));
     }
     return new Exiv2::DataValue(v.data(), static_cast<long>(v.size()));
 }
 
 #if EXIV2_TEST_VERSION(0,28,0)
 QDateTime exivValueToDateTime(const Exiv2::Value::UniquePtr value)
 #else
 QDateTime exivValueToDateTime(const Exiv2::Value::AutoPtr value)
 #endif
 {
     return QDateTime::fromString(value->toString().c_str(), Qt::ISODate);
 }
 
 template<typename T>
 inline T fixEndianness(T v, Exiv2::ByteOrder order)
 {
     switch (order) {
     case Exiv2::invalidByteOrder:
         return v;
     case Exiv2::littleEndian:
         return qFromLittleEndian<T>(v);
     case Exiv2::bigEndian:
         return qFromBigEndian<T>(v);
     }
     warnKrita << "KisExifIO: unknown byte order";
     return v;
 }
 
 Exiv2::ByteOrder invertByteOrder(Exiv2::ByteOrder order)
 {
     switch (order) {
     case Exiv2::littleEndian:
         return Exiv2::bigEndian;
     case Exiv2::bigEndian:
         return Exiv2::littleEndian;
     case Exiv2::invalidByteOrder:
         warnKrita << "KisExifIO: Can't invert Exiv2::invalidByteOrder";
         return Exiv2::invalidByteOrder;
     }
     return Exiv2::invalidByteOrder;
 }
 
 #if EXIV2_TEST_VERSION(0,28,0)
 KisMetaData::Value exifOECFToKMDOECFStructure(const Exiv2::Value::UniquePtr value, Exiv2::ByteOrder order)
 #else
 KisMetaData::Value exifOECFToKMDOECFStructure(const Exiv2::Value::AutoPtr value, Exiv2::ByteOrder order)
 #endif
 {
     QMap<QString, KisMetaData::Value> oecfStructure;
     const Exiv2::DataValue *dvalue = dynamic_cast<const Exiv2::DataValue *>(&*value);
     Q_ASSERT(dvalue);
     QByteArray array(dvalue->count(), 0);
 
     dvalue->copy((Exiv2::byte *)array.data());
 #if EXIV2_TEST_VERSION(0,28,0)
     size_t columns = fixEndianness<qsizetype>((reinterpret_cast<qsizetype *>(array.data()))[0], order);
     size_t rows = fixEndianness<qsizetype>((reinterpret_cast<qsizetype *>(array.data()))[1], order);
 #else
     int columns = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[0], order);
     int rows = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[1], order);
 #endif
 
     if ((columns * rows + 4)
         > dvalue->count()) { // Sometime byteOrder get messed up (especially if metadata got saved with kexiv2 library,
                              // or any library that doesn't save back with the same byte order as the camera)
         order = invertByteOrder(order);
 #if EXIV2_TEST_VERSION(0,28,0)
         columns = fixEndianness<qsizetype>((reinterpret_cast<qsizetype *>(array.data()))[0], order);
         rows = fixEndianness<qsizetype>((reinterpret_cast<qsizetype *>(array.data()))[1], order);
 #else
         columns = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[0], order);
         rows = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[1], order);
 #endif
         Q_ASSERT((columns * rows + 4) > dvalue->count());
     }
     QVariant qcolumns, qrows;
     qcolumns.setValue(columns);
     qrows.setValue(rows);
     oecfStructure["Columns"] = KisMetaData::Value(qcolumns);
     oecfStructure["Rows"] = KisMetaData::Value(qrows);
     int index = 4;
     QList<KisMetaData::Value> names;
 #if EXIV2_TEST_VERSION(0,28,0)
     for (size_t i = 0; i < columns; i++) {
 #else
     for (int i = 0; i < columns; i++) {
 #endif
         int lastIndex = array.indexOf((char)0, index);
         QString name = array.mid(index, lastIndex - index);
         if (index != lastIndex) {
             index = lastIndex + 1;
             dbgMetaData << "Name [" << i << "] =" << name;
             names.append(KisMetaData::Value(name));
         } else {
             names.append(KisMetaData::Value(""));
         }
     }
 
     oecfStructure["Names"] = KisMetaData::Value(names, KisMetaData::Value::OrderedArray);
     QList<KisMetaData::Value> values;
     qint32 *dataIt = reinterpret_cast<qint32 *>(array.data() + index);
 #if EXIV2_TEST_VERSION(0,28,0)
     for (size_t i = 0; i < columns; i++) {
         for (size_t j = 0; j < rows; j++) {
 #else
     for (int i = 0; i < columns; i++) {
         for (int j = 0; j < rows; j++) {
 #endif
             values.append(KisMetaData::Value(
                 KisMetaData::Rational(fixEndianness<qint32>(dataIt[0], order), fixEndianness<qint32>(dataIt[1], order))));
             dataIt += 2;
         }
     }
     oecfStructure["Values"] = KisMetaData::Value(values, KisMetaData::Value::OrderedArray);
     dbgMetaData << "OECF: " << ppVar(columns) << ppVar(rows) << ppVar(dvalue->count());
     return KisMetaData::Value(oecfStructure);
 }
 
 Exiv2::Value *kmdOECFStructureToExifOECF(const KisMetaData::Value &value)
 {
     QMap<QString, KisMetaData::Value> oecfStructure = value.asStructure();
     const quint16 columns = static_cast<quint16>(oecfStructure["Columns"].asVariant().toUInt());
     const quint16 rows = static_cast<quint16>(oecfStructure["Rows"].asVariant().toUInt());
 
     QList<KisMetaData::Value> names = oecfStructure["Names"].asArray();
     QList<KisMetaData::Value> values = oecfStructure["Values"].asArray();
     Q_ASSERT(columns * rows == values.size());
     int length = 4 + rows * columns * 8; // The 4 byte for storing rows/columns and the rows*columns*sizeof(rational)
     bool saveNames = (!names.empty() && names[0].asVariant().toString().size() > 0);
     if (saveNames) {
         for (int i = 0; i < columns; i++) {
             length += names[i].asVariant().toString().size() + 1;
         }
     }
     QByteArray array(length, 0);
     (reinterpret_cast<quint16 *>(array.data()))[0] = columns;
     (reinterpret_cast<quint16 *>(array.data()))[1] = rows;
     int index = 4;
     if (saveNames) {
         for (int i = 0; i < columns; i++) {
             QByteArray name = names[i].asVariant().toString().toLatin1();
             name.append((char)0);
             memcpy(array.data() + index, name.data(), static_cast<size_t>(name.size()));
             index += name.size();
         }
     }
     qint32 *dataIt = reinterpret_cast<qint32 *>(array.data() + index);
     for (const KisMetaData::Value &it : values) {
         dataIt[0] = it.asRational().numerator;
         dataIt[1] = it.asRational().denominator;
         dataIt += 2;
     }
     return new Exiv2::DataValue((const Exiv2::byte *)array.data(), array.size());
 }
 
 #if EXIV2_TEST_VERSION(0,28,0)
 KisMetaData::Value deviceSettingDescriptionExifToKMD(const Exiv2::Value::UniquePtr value)
 #else
 KisMetaData::Value deviceSettingDescriptionExifToKMD(const Exiv2::Value::AutoPtr value)
 #endif
 {
     QMap<QString, KisMetaData::Value> deviceSettingStructure;
     QByteArray array;
 
     const Exiv2::DataValue *dvalue = dynamic_cast<const Exiv2::DataValue *>(&*value);
     if (dvalue) {
         array.resize(dvalue->count());
         dvalue->copy((Exiv2::byte *)array.data());
     } else {
         Q_ASSERT(value->typeId() == Exiv2::unsignedShort);
         array.resize(2 * value->count());
         value->copy((Exiv2::byte *)array.data(), Exiv2::littleEndian);
     }
     int columns = (reinterpret_cast<quint16 *>(array.data()))[0];
     int rows = (reinterpret_cast<quint16 *>(array.data()))[1];
     deviceSettingStructure["Columns"] = KisMetaData::Value(columns);
     deviceSettingStructure["Rows"] = KisMetaData::Value(rows);
     QList<KisMetaData::Value> settings;
     QByteArray null(2, 0);
 
     for (int index = 4; index < array.size();) {
         const int lastIndex = array.indexOf(null, index);
         if (lastIndex < 0)
             break; // Data is not a String, ignore
         const int numChars = (lastIndex - index) / 2; // including trailing zero
 
         QString setting = QString::fromUtf16((ushort *)(void *)(array.data() + index), numChars);
         index = lastIndex + 2;
         dbgMetaData << "Setting << " << setting;
         settings.append(KisMetaData::Value(setting));
     }
     deviceSettingStructure["Settings"] = KisMetaData::Value(settings, KisMetaData::Value::OrderedArray);
     return KisMetaData::Value(deviceSettingStructure);
 }
 
 Exiv2::Value *deviceSettingDescriptionKMDToExif(const KisMetaData::Value &value)
 {
     QMap<QString, KisMetaData::Value> deviceSettingStructure = value.asStructure();
     const quint16 columns = static_cast<quint16>(deviceSettingStructure["Columns"].asVariant().toUInt());
     quint16 rows = static_cast<quint16>(deviceSettingStructure["Rows"].asVariant().toUInt());
 
     QTextCodec *codec = QTextCodec::codecForName("UTF-16");
 
     QList<KisMetaData::Value> settings = deviceSettingStructure["Settings"].asArray();
     QByteArray array(4, 0);
     (reinterpret_cast<quint16 *>(array.data()))[0] = columns;
     (reinterpret_cast<quint16 *>(array.data()))[1] = rows;
     for (const KisMetaData::Value &v : settings) {
         const QString str = v.asVariant().toString();
         QByteArray setting = codec->fromUnicode(str);
         array.append(setting);
     }
     return new Exiv2::DataValue((const Exiv2::byte *)array.data(), array.size());
 }
 
 #if EXIV2_TEST_VERSION(0,28,0)
 KisMetaData::Value cfaPatternExifToKMD(const Exiv2::Value::UniquePtr value, Exiv2::ByteOrder order)
 #else
 KisMetaData::Value cfaPatternExifToKMD(const Exiv2::Value::AutoPtr value, Exiv2::ByteOrder order)
 #endif
 {
     QMap<QString, KisMetaData::Value> cfaPatternStructure;
     const Exiv2::DataValue *dvalue = dynamic_cast<const Exiv2::DataValue *>(&*value);
     Q_ASSERT(dvalue);
     QByteArray array(dvalue->count(), 0);
     dvalue->copy((Exiv2::byte *)array.data());
 #if EXIV2_TEST_VERSION(0,28,0)
     size_t columns = fixEndianness<qsizetype>((reinterpret_cast<qsizetype *>(array.data()))[0], order);
     size_t rows = fixEndianness<qsizetype>((reinterpret_cast<qsizetype *>(array.data()))[1], order);
 #else
     int columns = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[0], order);
     int rows = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[1], order);
 #endif
     if ((columns * rows + 4)
         != dvalue->count()) { // Sometime byteOrder get messed up (especially if metadata got saved with kexiv2 library,
                               // or any library that doesn't save back with the same byte order as the camera)
         order = invertByteOrder(order);
         columns = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[0], order);
         rows = fixEndianness<quint16>((reinterpret_cast<quint16 *>(array.data()))[1], order);
     }
     QVariant qcolumns, qrows;
     qcolumns.setValue(columns);
     qrows.setValue(rows);
     cfaPatternStructure["Columns"] = KisMetaData::Value(qcolumns);
     cfaPatternStructure["Rows"] = KisMetaData::Value(qrows);
     QList<KisMetaData::Value> values;
     int index = 4;
     for (int i = 0; i < columns * rows; i++) {
         values.append(KisMetaData::Value(*(array.data() + index)));
         index++;
     }
     cfaPatternStructure["Values"] = KisMetaData::Value(values, KisMetaData::Value::OrderedArray);
     dbgMetaData << "CFAPattern " << ppVar(columns) << " " << ppVar(rows) << ppVar(values.size())
                 << ppVar(dvalue->count());
     return KisMetaData::Value(cfaPatternStructure);
 }
 
 Exiv2::Value *cfaPatternKMDToExif(const KisMetaData::Value &value)
 {
     QMap<QString, KisMetaData::Value> cfaStructure = value.asStructure();
     const quint16 columns = static_cast<quint16>(cfaStructure["Columns"].asVariant().toUInt());
     const quint16 rows = static_cast<quint16>(cfaStructure["Rows"].asVariant().toUInt());
 
     QList<KisMetaData::Value> values = cfaStructure["Values"].asArray();
     Q_ASSERT(columns * rows == values.size());
     QByteArray array(4 + columns * rows, 0);
     (reinterpret_cast<quint16 *>(array.data()))[0] = columns;
     (reinterpret_cast<quint16 *>(array.data()))[1] = rows;
     for (int i = 0; i < columns * rows; i++) {
         const quint8 val = (quint8)values[i].asVariant().toUInt();
         *(array.data() + 4 + i) = (char)val;
     }
     dbgMetaData << "Cfa Array " << ppVar(columns) << ppVar(rows) << ppVar(array.size());
     return new Exiv2::DataValue((const Exiv2::byte *)array.data(), array.size());
 }
 
 // Read and write Flash //
 
 #if EXIV2_TEST_VERSION(0,28,0)
 KisMetaData::Value flashExifToKMD(const Exiv2::Value::UniquePtr value)
 #else
 KisMetaData::Value flashExifToKMD(const Exiv2::Value::AutoPtr value)
 #endif
 {
 #if EXIV2_TEST_VERSION(0,28,0)
     const uint16_t v = static_cast<uint16_t>(value->toUint32());
 #else
     const uint16_t v = static_cast<uint16_t>(value->toLong());
 #endif
     QMap<QString, KisMetaData::Value> flashStructure;
     bool fired = (v & 0x01); // bit 1 is whether flash was fired or not
     flashStructure["Fired"] = QVariant(fired);
     int ret = ((v >> 1) & 0x03); // bit 2 and 3 are Return
     flashStructure["Return"] = QVariant(ret);
     int mode = ((v >> 3) & 0x03); // bit 4 and 5 are Mode
     flashStructure["Mode"] = QVariant(mode);
     bool function = ((v >> 5) & 0x01); // bit 6 if function
     flashStructure["Function"] = QVariant(function);
     bool redEye = ((v >> 6) & 0x01); // bit 7 if function
     flashStructure["RedEyeMode"] = QVariant(redEye);
     return KisMetaData::Value(flashStructure);
 }
 
 Exiv2::Value *flashKMDToExif(const KisMetaData::Value &value)
 {
     uint16_t v = 0;
     QMap<QString, KisMetaData::Value> flashStructure = value.asStructure();
     v = flashStructure["Fired"].asVariant().toBool();
     v |= ((flashStructure["Return"].asVariant().toInt() & 0x03) << 1);
     v |= ((flashStructure["Mode"].asVariant().toInt() & 0x03) << 3);
     v |= ((flashStructure["Function"].asVariant().toInt() & 0x03) << 5);
     v |= ((flashStructure["RedEyeMode"].asVariant().toInt() & 0x03) << 6);
     return new Exiv2::ValueType<uint16_t>(v);
 }
 
 // ---- Implementation of KisExifIO ----//
 KisExifIO::KisExifIO()
     : KisMetaData::IOBackend()
 {
 }
 
 KisExifIO::~KisExifIO()
 {
 }
 
 bool KisExifIO::saveTo(const KisMetaData::Store *store, QIODevice *ioDevice, HeaderType headerType) const
 {
     ioDevice->open(QIODevice::WriteOnly);
     Exiv2::ExifData exifData;
     if (headerType == KisMetaData::IOBackend::JpegHeader) {
         QByteArray header(6, 0);
         header[0] = 0x45;
         header[1] = 0x78;
         header[2] = 0x69;
         header[3] = 0x66;
         header[4] = 0x00;
         header[5] = 0x00;
         ioDevice->write(header);
     }
 
     for (const KisMetaData::Entry &entry : *store) {
         try {
             dbgMetaData << "Trying to save: " << entry.name() << " of " << entry.schema()->prefix() << ":"
                         << entry.schema()->uri();
             QString exivKey;
             if (entry.schema()->uri() == KisMetaData::Schema::TIFFSchemaUri) {
                 exivKey = "Exif.Image." + entry.name();
             } else if (entry.schema()->uri()
                        == KisMetaData::Schema::EXIFSchemaUri) { // Distinguish between exif and gps
                 if (entry.name().left(3) == "GPS") {
                     exivKey = "Exif.GPSInfo." + entry.name();
                 } else {
                     exivKey = "Exif.Photo." + entry.name();
                 }
             } else if (entry.schema()->uri() == KisMetaData::Schema::DublinCoreSchemaUri) {
                 if (entry.name() == "description") {
                     exivKey = "Exif.Image.ImageDescription";
                 } else if (entry.name() == "creator") {
                     exivKey = "Exif.Image.Artist";
                 } else if (entry.name() == "rights") {
                     exivKey = "Exif.Image.Copyright";
                 }
             } else if (entry.schema()->uri() == KisMetaData::Schema::XMPSchemaUri) {
                 if (entry.name() == "ModifyDate") {
                     exivKey = "Exif.Image.DateTime";
                 } else if (entry.name() == "CreatorTool") {
                     exivKey = "Exif.Image.Software";
                 }
             } else if (entry.schema()->uri() == KisMetaData::Schema::MakerNoteSchemaUri) {
                 if (entry.name() == "RawData") {
                     exivKey = "Exif.Photo.MakerNote";
                 }
             }
             dbgMetaData << "Saving " << entry.name() << " to " << exivKey;
             if (exivKey.isEmpty()) {
                 dbgMetaData << entry.qualifiedName() << " is unsavable to EXIF";
             } else {
                 Exiv2::ExifKey exifKey(qPrintable(exivKey));
                 Exiv2::Value *v = 0;
                 if (exivKey == "Exif.Photo.ExifVersion" || exivKey == "Exif.Photo.FlashpixVersion") {
                     v = kmdValueToExifVersion(entry.value());
                 } else if (exivKey == "Exif.Photo.FileSource") {
                     char s[] = {0x03};
                     v = new Exiv2::DataValue((const Exiv2::byte *)s, 1);
                 } else if (exivKey == "Exif.Photo.SceneType") {
                     char s[] = {0x01};
                     v = new Exiv2::DataValue((const Exiv2::byte *)s, 1);
                 } else if (exivKey == "Exif.Photo.ComponentsConfiguration") {
                     v = kmdIntOrderedArrayToExifArray(entry.value());
                 } else if (exivKey == "Exif.Image.Artist") { // load as dc:creator
                     KisMetaData::Value creator = entry.value();
                     if (entry.value().asArray().size() > 0) {
                         creator = entry.value().asArray()[0];
                     }
 #if !EXIV2_TEST_VERSION(0, 21, 0)
                     v = kmdValueToExivValue(creator, Exiv2::ExifTags::tagType(exifKey.tag(), exifKey.ifdId()));
 #else
                     v = kmdValueToExivValue(creator, exifKey.defaultTypeId());
 #endif
                 } else if (exivKey == "Exif.Photo.OECF") {
                     v = kmdOECFStructureToExifOECF(entry.value());
                 } else if (exivKey == "Exif.Photo.DeviceSettingDescription") {
                     v = deviceSettingDescriptionKMDToExif(entry.value());
                 } else if (exivKey == "Exif.Photo.CFAPattern") {
                     v = cfaPatternKMDToExif(entry.value());
                 } else if (exivKey == "Exif.Photo.Flash") {
                     v = flashKMDToExif(entry.value());
                 } else if (exivKey == "Exif.Photo.UserComment") {
                     Q_ASSERT(entry.value().type() == KisMetaData::Value::LangArray);
                     QMap<QString, KisMetaData::Value> langArr = entry.value().asLangArray();
                     if (langArr.contains("x-default")) {
 #if !EXIV2_TEST_VERSION(0, 21, 0)
                         v = kmdValueToExivValue(langArr.value("x-default"),
                                                 Exiv2::ExifTags::tagType(exifKey.tag(), exifKey.ifdId()));
 #else
                         v = kmdValueToExivValue(langArr.value("x-default"), exifKey.defaultTypeId());
 #endif
                     } else if (langArr.size() > 0) {
 #if !EXIV2_TEST_VERSION(0, 21, 0)
                         v = kmdValueToExivValue(langArr.begin().value(),
                                                 Exiv2::ExifTags::tagType(exifKey.tag(), exifKey.ifdId()));
 #else
                         v = kmdValueToExivValue(langArr.begin().value(), exifKey.defaultTypeId());
 #endif
                     }
                 } else {
                     dbgMetaData << exifKey.tag();
 #if !EXIV2_TEST_VERSION(0, 21, 0)
                     v = kmdValueToExivValue(entry.value(), Exiv2::ExifTags::tagType(exifKey.tag(), exifKey.ifdId()));
 #else
                     v = kmdValueToExivValue(entry.value(), exifKey.defaultTypeId());
 #endif
                 }
                 if (v && v->typeId() != Exiv2::invalidTypeId) {
                     dbgMetaData << "Saving key" << exivKey << " of KMD value" << entry.value();
                     exifData.add(exifKey, v);
                 } else {
                     dbgMetaData << "No exif value was created for" << entry.qualifiedName() << " as"
                                 << exivKey; // << " of KMD value" << entry.value();
                 }
             }
 #if EXIV2_TEST_VERSION(0,28,0)
         } catch (Exiv2::Error &e) {
 #else
         } catch (Exiv2::AnyError &e) {
 #endif
             dbgMetaData << "exiv error " << e.what();
         }
     }
 #if !EXIV2_TEST_VERSION(0, 18, 0)
     Exiv2::DataBuf rawData = exifData.copy();
     ioDevice->write((const char *)rawData.pData_, rawData.size_);
 #else
     Exiv2::Blob rawData;
     Exiv2::ExifParser::encode(rawData, Exiv2::littleEndian, exifData);
     ioDevice->write((const char *)&*rawData.begin(), static_cast<int>(rawData.size()));
 #endif
     ioDevice->close();
     return true;
 }
 
 bool KisExifIO::canSaveAllEntries(KisMetaData::Store * /*store*/) const
 {
     return false; // It's a known fact that exif can't save all information, but TODO: write the check
 }
 
 bool KisExifIO::loadFrom(KisMetaData::Store *store, QIODevice *ioDevice) const
 {
     if (!ioDevice->open(QIODevice::ReadOnly)) {
         return false;
     }
     QByteArray arr(ioDevice->readAll());
     Exiv2::ExifData exifData;
     Exiv2::ByteOrder byteOrder;
 #if !EXIV2_TEST_VERSION(0, 18, 0)
     exifData.load((const Exiv2::byte *)arr.data(), arr.size());
     byteOrder = exifData.byteOrder();
 #else
     try {
         byteOrder =
             Exiv2::ExifParser::decode(exifData, (const Exiv2::byte *)arr.data(), static_cast<uint32_t>(arr.size()));
     } catch (const std::exception &ex) {
         warnKrita << "Received exception trying to parse exiv data" << ex.what();
         return false;
     } catch (...) {
         dbgKrita << "Received unknown exception trying to parse exiv data";
         return false;
     }
 #endif
     dbgMetaData << "Byte order = " << byteOrder << ppVar(Exiv2::bigEndian) << ppVar(Exiv2::littleEndian);
     dbgMetaData << "There are" << exifData.count() << " entries in the exif section";
     const KisMetaData::Schema *tiffSchema =
         KisMetaData::SchemaRegistry::instance()->schemaFromUri(KisMetaData::Schema::TIFFSchemaUri);
     Q_ASSERT(tiffSchema);
     const KisMetaData::Schema *exifSchema =
         KisMetaData::SchemaRegistry::instance()->schemaFromUri(KisMetaData::Schema::EXIFSchemaUri);
     Q_ASSERT(exifSchema);
     const KisMetaData::Schema *dcSchema =
         KisMetaData::SchemaRegistry::instance()->schemaFromUri(KisMetaData::Schema::DublinCoreSchemaUri);
     Q_ASSERT(dcSchema);
     const KisMetaData::Schema *xmpSchema =
         KisMetaData::SchemaRegistry::instance()->schemaFromUri(KisMetaData::Schema::XMPSchemaUri);
     Q_ASSERT(xmpSchema);
     const KisMetaData::Schema *makerNoteSchema =
         KisMetaData::SchemaRegistry::instance()->schemaFromUri(KisMetaData::Schema::MakerNoteSchemaUri);
     Q_ASSERT(makerNoteSchema);
 
     for (const Exiv2::Exifdatum &it : exifData) {
         const uint16_t tag = it.tag();
 
         if (tag == Exif::Image::StripOffsets || tag == Exif::Image::RowsPerStrip || tag == Exif::Image::StripByteCounts
             || tag == Exif::Image::JPEGInterchangeFormat || tag == Exif::Image::JPEGInterchangeFormatLength
             || it.tagName() == "0x0000") {
             dbgMetaData << it.key().c_str() << " is ignored";
         } else if (tag == Exif::Photo::MakerNote) {
             store->addEntry({makerNoteSchema, "RawData", exivValueToKMDValue(it.getValue(), false)});
         } else if (tag == Exif::Image::DateTime) { // load as xmp:ModifyDate
             store->addEntry({xmpSchema, "ModifyDate", exivValueToKMDValue(it.getValue(), false)});
         } else if (tag == Exif::Image::ImageDescription) { // load as "dc:description"
             store->addEntry({dcSchema, "description", exivValueToKMDValue(it.getValue(), false)});
         } else if (tag == Exif::Image::Software) { // load as "xmp:CreatorTool"
             store->addEntry({xmpSchema, "CreatorTool", exivValueToKMDValue(it.getValue(), false)});
         } else if (tag == Exif::Image::Artist) { // load as dc:creator
             QList<KisMetaData::Value> creators = {exivValueToKMDValue(it.getValue(), false)};
             store->addEntry({dcSchema, "creator", {creators, KisMetaData::Value::OrderedArray}});
         } else if (tag == Exif::Image::Copyright) { // load as dc:rights
             store->addEntry({dcSchema, "rights", exivValueToKMDValue(it.getValue(), false)});
         } else if (it.groupName() == "Image") {
             // Tiff tags
             const QString fixedTN(it.tagName().c_str());
             if (tag == Exif::Image::ExifTag || tag == Exif::Image::GPSTag) {
                 dbgMetaData << "Ignoring " << it.key().c_str();
             } else if (KisMetaData::Entry::isValidName(fixedTN)) {
                 store->addEntry({tiffSchema, fixedTN, exivValueToKMDValue(it.getValue(), false)});
             } else {
                 dbgMetaData << "Invalid tag name: " << fixedTN;
             }
         } else if (it.groupName() == "Photo") {
             // Exif tags
             KisMetaData::Value metaDataValue;
             if (tag == Exif::Photo::ExifVersion || tag == Exif::Photo::FlashpixVersion) {
                 metaDataValue = exifVersionToKMDValue(it.getValue());
             } else if (tag == Exif::Photo::FileSource) {
                 metaDataValue = KisMetaData::Value(3);
             } else if (tag == Exif::Photo::SceneType) {
                 metaDataValue = KisMetaData::Value(1);
             } else if (tag == Exif::Photo::ComponentsConfiguration) {
                 metaDataValue = exifArrayToKMDIntOrderedArray(it.getValue());
             } else if (tag == Exif::Photo::OECF) {
                 metaDataValue = exifOECFToKMDOECFStructure(it.getValue(), byteOrder);
             } else if (tag == Exif::Photo::DateTimeDigitized || tag == Exif::Photo::DateTimeOriginal) {
                 metaDataValue = exivValueToKMDValue(it.getValue(), false);
             } else if (tag == Exif::Photo::DeviceSettingDescription) {
                 metaDataValue = deviceSettingDescriptionExifToKMD(it.getValue());
             } else if (tag == Exif::Photo::CFAPattern) {
                 metaDataValue = cfaPatternExifToKMD(it.getValue(), byteOrder);
             } else if (tag == Exif::Photo::Flash) {
                 metaDataValue = flashExifToKMD(it.getValue());
             } else if (tag == Exif::Photo::UserComment) {
                 if (it.getValue()->typeId() != Exiv2::undefined) {
                     KisMetaData::Value vUC = exivValueToKMDValue(it.getValue(), false);
                     Q_ASSERT(vUC.type() == KisMetaData::Value::Variant);
                     QVariant commentVar = vUC.asVariant();
                     QString comment;
                     if (commentVar.type() == QVariant::String) {
                         comment = commentVar.toString();
                     } else if (commentVar.type() == QVariant::ByteArray) {
                         const QByteArray commentString = commentVar.toByteArray();
                         comment = QString::fromLatin1(commentString.constData(), commentString.size());
                     } else {
                         warnKrita << "KisExifIO: Unhandled UserComment value type.";
                     }
                     KisMetaData::Value vcomment(comment);
                     vcomment.addPropertyQualifier("xml:lang", KisMetaData::Value("x-default"));
                     QList<KisMetaData::Value> alt;
                     alt.append(vcomment);
                     metaDataValue = KisMetaData::Value(alt, KisMetaData::Value::LangArray);
                 }
             } else {
                 bool forceSeq = false;
                 KisMetaData::Value::ValueType arrayType = KisMetaData::Value::UnorderedArray;
                 if (tag == Exif::Photo::ISOSpeedRatings) {
                     forceSeq = true;
                     arrayType = KisMetaData::Value::OrderedArray;
                 }
                 metaDataValue = exivValueToKMDValue(it.getValue(), forceSeq, arrayType);
             }
             if (tag == Exif::Photo::InteroperabilityTag || tag == 0xea1d
                 || metaDataValue.type() == KisMetaData::Value::Invalid) { // InteroperabilityTag isn't useful for XMP,
                 // 0xea1d isn't a valid Exif tag
                 warnMetaData << "Ignoring " << it.key().c_str();
 
             } else {
                 store->addEntry({exifSchema, it.tagName().c_str(), metaDataValue});
             }
         } else if (it.groupName() == "Thumbnail") {
             dbgMetaData << "Ignoring thumbnail tag :" << it.key().c_str();
         } else if (it.groupName() == "GPSInfo") {
             store->addEntry({exifSchema, it.tagName().c_str(), exivValueToKMDValue(it.getValue(), false)});
         } else {
             dbgMetaData << "Unknown exif tag, cannot load:" << it.key().c_str();
         }
     }
     ioDevice->close();
     return true;
 }