bool ptImageHelper::ReadExif(const QString &AFileName,
Exiv2::ExifData &AExifData,
std::vector<uint8_t> &AExifBuffer)
{
if (AFileName.trimmed().isEmpty()) return false;
try {
if (Exiv2::ImageFactory::getType(AFileName.toLocal8Bit().data()) == Exiv2::ImageType::none)
return false;
Exiv2::Image::AutoPtr hImage = Exiv2::ImageFactory::open(AFileName.toLocal8Bit().data());
if (!hImage.get()) return false;
hImage->readMetadata();
AExifData = hImage->exifData();
if (AExifData.empty()) {
ptLogWarning(ptWarning_Argument, "No Exif data found in %s", AFileName.toLocal8Bit().data());
return false;
}
Exiv2::ExifData::iterator Pos;
size_t Size;
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::Blob Blob;
Exiv2::ExifParser::encode(Blob, Exiv2::bigEndian, AExifData);
Size = Blob.size();
#else
Exiv2::DataBuf Buf(AExifData.copy());
Size = Buf.size_;
#endif
/* If buffer too big for JPEG, try deleting some stuff. */
if (Size + CExifHeader.size() > CMaxHeaderLength) {
if ((Pos = AExifData.findKey(Exiv2::ExifKey("Exif.Photo.MakerNote"))) != AExifData.end() ) {
AExifData.erase(Pos);
ptLogWarning(ptWarning_Argument, "Exif buffer too big, erasing Exif.Photo.MakerNote");
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifParser::encode(Blob, Exiv2::bigEndian, AExifData);
Size = Blob.size();
#else
Buf = AExifData.copy();
Size = Buf.size_;
#endif
}
}
// Erase embedded thumbnail if needed
if (Settings->GetInt("EraseExifThumbnail") ||
(Size + CExifHeader.size()) > CMaxHeaderLength ) {
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifThumb Thumb(AExifData);
Thumb.erase();
#else
AExifData.eraseThumbnail();
#endif
if (!Settings->GetInt("EraseExifThumbnail"))
ptLogWarning(ptWarning_Argument, "Exif buffer too big, erasing Thumbnail");
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifParser::encode(Blob, Exiv2::bigEndian, AExifData);
Size = Blob.size();
#else
Buf = AExifData.copy();
Size = Buf.size_;
#endif
}
AExifBuffer.clear();
AExifBuffer.insert(AExifBuffer.end(),
CExifHeader.begin(),
CExifHeader.end());
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
AExifBuffer.insert(AExifBuffer.end(),
Blob.begin(),
Blob.end());
#else
// old code will currently not compile
memcpy(AExifBuffer+sizeof(ExifHeader), Buf.pData_, Buf.size_);
#endif
return true;
} catch(Exiv2::Error& Error) {
// Exiv2 errors are in this context hopefully harmless
// (unsupported tags etc.)
ptLogWarning(ptWarning_Exiv2,"Exiv2 : %s\n",Error.what());
}
return false;
}
bool KisExifIO::saveTo(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 (QHash<QString, KisMetaData::Entry>::const_iterator it = store->begin();
it != store->end(); ++it) {
try {
const KisMetaData::Entry& entry = *it;
dbgFile << "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.GPS." + 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";
}
}
dbgFile << "Saving " << entry.name() << " to " << exivKey;
if (exivKey.isEmpty()) {
dbgFile << 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().asArray()[0];
#if EXIV2_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION <= 20
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_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION <= 20
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_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION <= 20
v = kmdValueToExivValue(langArr.begin().value(), Exiv2::ExifTags::tagType(exifKey.tag(), exifKey.ifdId()));
#else
v = kmdValueToExivValue(langArr.begin().value(), exifKey.defaultTypeId());
#endif
}
} else {
dbgFile << exifKey.tag();
#if EXIV2_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION <= 20
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) {
dbgFile << "Saving key" << exivKey << " of KMD value" << entry.value();
exifData.add(exifKey, v);
} else {
dbgFile << "No exif value was created for" << entry.qualifiedName() << " as" << exivKey;// << " of KMD value" << entry.value();
}
}
} catch (Exiv2::AnyError& e) {
dbgFile << "exiv error " << e.what();
}
}
#if EXIV2_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION <= 17
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(), rawData.size());
#endif
ioDevice->close();
return true;
}
