bool getExifDateTime(Exiv2::ExifData &exifData, QDateTime &dateTime) {
bool anyFound = false;
try {
Exiv2::ExifKey key(EXIF_PHOTO_DATETIMEORIGINAL);
Exiv2::ExifData::iterator it = exifData.findKey(key);
if (it != exifData.end()) {
dateTime = QDateTime::fromString(QString::fromLatin1(it->toString().c_str()), Qt::ISODate);
anyFound = dateTime.isValid();
}
if (!anyFound) {
Exiv2::ExifKey imageKey(EXIF_IMAGE_DATETIMEORIGINAL);
Exiv2::ExifData::iterator imageIt = exifData.findKey(imageKey);
if (imageIt != exifData.end()) {
dateTime = QDateTime::fromString(QString::fromLatin1(imageIt->toString().c_str()), Qt::ISODate);
anyFound = dateTime.isValid();
}
}
}
catch (Exiv2::Error &e) {
LOG_WARNING << "Exiv2 error:" << e.what();
anyFound = false;
}
catch (...) {
LOG_WARNING << "Exception";
anyFound = false;
#ifdef QT_DEBUG
throw;
#endif
}
return anyFound;
}
void DB::FileInfo::parseEXIV2( const DB::FileName& fileName )
{
Exiv2::ExifData map = Exif::Info::instance()->metadata( fileName ).exif;
// Date
m_date = fetchEXIV2Date( map, "Exif.Photo.DateTimeOriginal" );
if ( !m_date.isValid() ) {
m_date = fetchEXIV2Date( map, "Exif.Photo.DateTimeDigitized" );
if ( !m_date.isValid() )
m_date = fetchEXIV2Date( map, "Exif.Image.DateTime" );
}
// Angle
if ( map.findKey( Exiv2::ExifKey( "Exif.Image.Orientation" ) ) != map.end() ) {
const Exiv2::Exifdatum& datum = map["Exif.Image.Orientation"];
int orientation = 0;
if (datum.count() > 0)
orientation = datum.toLong();
m_angle = orientationToAngle( orientation );
}
// Description
if( map.findKey( Exiv2::ExifKey( "Exif.Image.ImageDescription" ) ) != map.end() ) {
const Exiv2::Exifdatum& datum = map["Exif.Image.ImageDescription"];
m_description = QString::fromLocal8Bit( datum.toString().c_str() );
}
}
void print(const std::string& file)
{
Exiv2::ExifData ed;
int rc = ed.read(file);
if (rc) {
std::string error = Exiv2::ExifData::strError(rc, file);
throw Exiv2::Error(error);
}
Exiv2::ExifData::const_iterator end = ed.end();
for (Exiv2::ExifData::const_iterator i = ed.begin(); i != end; ++i) {
std::cout << std::setw(45) << std::setfill(' ') << std::left
<< i->key() << " "
<< "0x" << std::setw(4) << std::setfill('0') << std::right
<< std::hex << i->tag() << " "
<< std::setw(12) << std::setfill(' ') << std::left
<< i->ifdName() << " "
<< std::setw(9) << std::setfill(' ') << std::left
<< i->typeName() << " "
<< std::dec << std::setw(3)
<< std::setfill(' ') << std::right
<< i->count() << " "
<< std::dec << i->value()
<< "\n";
}
}
QString exifDataToString(Exiv2::ExifData exifData) {
if (exifData.empty()) {
return QString(QObject::tr("No EXIF found"));
}
try {
Exiv2::ExifData::const_iterator end = exifData.end();
QString tmpExif, final;
for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
const char* tn = i->typeName();
/*std::string str = i->key() << " ";
<< "0x" << std::setw(4) << std::setfill('0') << std::right
<< std::hex << i->tag() << " "
<< std::setw(9) << std::setfill(' ') << std::left
<< (tn ? tn : "Unknown") << " "
<< std::dec << std::setw(3)
<< std::setfill(' ') << std::right
<< i->count() << " "
<< std::dec << i->value()
<< "\n";*/
tmpExif = "<span style='color:#1cb495;'>" + QString::fromStdString(i->key()).split(".").at(2) + "</span> " +
//QString::number(i->tag()) + "\t" +
//(tn ? tn : "Unknown") + "\t" +
//QString::number(i->count()) + "\t" +
QString::fromStdString(i->value().toString()) + "<br />";
final.append(tmpExif);
}
return final;
} catch(Exiv2::Error& e) {
const double getExiv2ValueDouble(Exiv2::ExifData& exifData, Exiv2::ExifData::const_iterator it)
{
if(it!=exifData.end() && it->count())
{
return it->toFloat();
}
return 0;
};
const std::string getExiv2ValueString(Exiv2::ExifData& exifData,Exiv2::ExifData::const_iterator it)
{
if(it!=exifData.end() && it->count())
{
return hugin_utils::StrTrim(it->toString());
};
return std::string("");
};
const long getExiv2ValueLong(Exiv2::ExifData& exifData, Exiv2::ExifData::const_iterator it)
{
if(it!=exifData.end() && it->count())
{
return it->toLong();
}
return 0;
};
/** \fn ImageUtils::HasExifKey(Exiv2::ExifData, const QString &)
* \brief Checks if the exif data of the file contains the given key
* \param exifData The entire exif data
* \param exifTag The key that shall be checked
* \return True if the exif key exists, otherwise false
*/
bool ImageUtils::HasExifKey(Exiv2::ExifData exifData,
const QString &exifTag)
{
Exiv2::ExifKey key(exifTag.toLocal8Bit().constData());
Exiv2::ExifData::iterator it = exifData.findKey(key);
// If the iterator has is the end of the
// list then the key has not been found
return !(it == exifData.end());
}
bool _getExiv2Value(Exiv2::ExifData& exifData, std::string keyName, float & value)
{
Exiv2::ExifData::iterator itr = exifData.findKey(Exiv2::ExifKey(keyName));
if (itr != exifData.end() && itr->count())
{
value = itr->toFloat();
return true;
}
else
{
return false;
};
};
bool _getExiv2Value(Exiv2::ExifData& exifData, uint16_t tagID, std::string groupName, std::string & value)
{
Exiv2::ExifData::iterator itr = exifData.findKey(Exiv2::ExifKey(tagID, groupName));
if (itr != exifData.end() && itr->count())
{
value = itr->toString();
return true;
}
else
{
return false;
};
};
static void EraseGpsTags(Exiv2::ExifData &ExifInfo)
{
// Search through, find the keys that we want, and wipe them
// Code below submitted by Marc Horowitz
Exiv2::ExifData::iterator Iter;
for (Exiv2::ExifData::iterator Iter = ExifInfo.begin();
Iter != ExifInfo.end(); )
{
if (Iter->key().find("Exif.GPSInfo") == 0)
Iter = ExifInfo.erase(Iter);
else
Iter++;
}
}
QDateTime FileInfo::fetchEXIV2Date( Exiv2::ExifData& map, const char* key )
{
try
{
if ( map.findKey( Exiv2::ExifKey( key ) ) != map.end() ) {
const Exiv2::Exifdatum& datum = map[key ];
return QDateTime::fromString( QString::fromLatin1(datum.toString().c_str()), Qt::ISODate );
}
}
catch (...)
{
}
return QDateTime();
}
// uses the exiv2 class to readout the exifdata from images
int ExifScout::showExifData(std::string a){
try {
Ui_MainWindow::textEdit->clear();
std::cerr << "ImageFactory::open ";
Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(a);
std::cerr << "DONE\n";
assert(image.get() != 0);
std::cerr << "image->readMetadata() ";
image->readMetadata();
std::cerr << "DONE\n";
std::cerr << "Exiv2::ExifData& exifData = image->exifData() ";
Exiv2::ExifData exifData = image->exifData();
std::cerr << "DONE\n";
cout << "Number of found exiv2 data: " << exifData.count() << endl;
if (exifData.empty()) {
Ui_MainWindow::textEdit->setPlainText("No Exif data found in file");
return 1;
}
Exiv2::ExifData::const_iterator end = exifData.end();
std::cerr << "Generate the exif-output ";
QString output;
for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
std::string tagname = i->tagName();
if(tagname != std::string("MakerNote") and
tagname.substr(0,2) != "0x"){
// Print out the exif-data in the QtextEdit Field
std::ostringstream oss;
oss << i->tagName() << ":\n " << i->value() << "\n";
output = output+(QString)oss.str().c_str();
}
}
std::cerr << "Done\n";
Ui_MainWindow::textEdit->setPlainText(output);
return 0;
}
//catch (std::exception& e) {
//catch (Exiv2::AnyError& e) {
catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e.what() << "'\n";
return -1;
}
}
bool _getExiv2Value(Exiv2::ExifData& exifData, std::string keyName, std::vector<float> & values)
{
values.clear();
Exiv2::ExifData::iterator itr = exifData.findKey(Exiv2::ExifKey(keyName));
if (itr != exifData.end() && itr->count())
{
for(long i=0; i<itr->count(); i++)
{
values.push_back(itr->toFloat(i));
};
return true;
}
else
{
return false;
}
}
QString ExifReaderWriter::readExifItem( Exiv2::ExifData &exifData, std::string keyStr)
{
try{
Exiv2::ExifKey key(keyStr);
Exiv2::ExifData::iterator pos = exifData.findKey(key);
if(pos != exifData.end())
{
return exifData[keyStr].toString().data();
}
}
catch (Exiv2::Error& e) {
;//std::cerr << "Caught Exiv2 exception '" << e.what() << "'\n";
}
return "";
}
QString getExifCommentValue(Exiv2::ExifData &exifData, const char *propertyName) {
QString result;
Exiv2::ExifKey key(propertyName);
Exiv2::ExifData::iterator it = exifData.findKey(key);
if (it != exifData.end()) {
const Exiv2::Exifdatum& exifDatum = *it;
std::string comment;
std::string charset;
comment = exifDatum.toString();
// libexiv2 will prepend "charset=\"SomeCharset\" " if charset is specified
// Before conversion to QString, we must know the charset, so we stay with std::string for a while
if (comment.length() > 8 && comment.substr(0, 8) == "charset=") {
// the prepended charset specification is followed by a blank
std::string::size_type pos = comment.find_first_of(' ');
if (pos != std::string::npos) {
// extract string between the = and the blank
charset = comment.substr(8, pos-8);
// get the rest of the string after the charset specification
comment = comment.substr(pos+1);
}
}
if (charset == "\"Unicode\"") {
result = QString::fromUtf8(comment.data());
}
else if (charset == "\"Jis\"") {
QTextCodec* const codec = QTextCodec::codecForName("JIS7");
result = codec->toUnicode(comment.c_str());
}
else if (charset == "\"Ascii\"") {
result = QString::fromLatin1(comment.c_str());
} else {
result = Helpers::detectEncodingAndDecode(comment);
}
}
return result;
}
void ExifReaderWriter::writeData(Exiv2::ExifData &exifData, std::string keyStr, QString str)
{
try{
Exiv2::ExifKey key(keyStr);
Exiv2::ExifData::iterator pos = exifData.findKey(key);
if(pos != exifData.end()){
exifData[keyStr].setValue(str.toStdString());
}
else //vytvorim novou polozku
{
exifData[keyStr].setValue(str.toStdString());
}
}
catch (Exiv2::Error& e) {
;//std::cerr << "Caught Exiv2 exception '" << e.what() << "'\n";
}
}
// tries to find a specified exif tag in a specified file
QString ExifScout::getExifData(QString fname, QString etag){
std::string filename = fname.toAscii().data();
std::string exiftag = etag.toAscii().data();
Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(filename);
assert(image.get() != 0);
image->readMetadata();
Exiv2::ExifData exifData = image->exifData();
if (!exifData.empty()) {
Exiv2::ExifData::const_iterator end = exifData.end();
QString output;
for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
if(i->tagName()==exiftag){
std::ostringstream oss;
oss << i->value();
return (QString)oss.str().c_str();
}
}
}
return NULL;
}
const std::string getLensName(Exiv2::ExifData &exifData)
{
std::string lensName;
// first we are reading LensModel in Exif section, this is only available
// with EXIF >= 2.3
#if EXIV2_TEST_VERSION(0,22,0)
//the string "Exif.Photo.LensModel" is only defined in exiv2 0.22.0 and above
if(_getExiv2Value(exifData, "Exif.Photo.LensModel", lensName))
#else
if(_getExiv2Value(exifData, 0xa434, "Photo", lensName))
#endif
{
if(lensName.length()>0)
{
return lensName;
};
}
else
{
//no lens in Exif found, now look in makernotes
Exiv2::ExifData::const_iterator itr2 = Exiv2::lensName(exifData);
if (itr2!=exifData.end() && itr2->count())
{
//we are using prettyPrint function to get string of lens name
//it2->toString returns for many cameras only an ID number
lensName=itr2->print(&exifData);
//check returned lens name
if(lensName.length()>0)
{
//for Canon it can contain (65535) or (0) for unknown lenses
//for Pentax it can contain Unknown (0xHEX)
if(lensName.compare(0, 1, "(")!=0 && lensName.compare(0, 7, "Unknown")!=0)
{
return lensName;
}
};
};
};
return std::string("");
};
void clearGPSFields(Exiv2::ExifData &exifData) {
std::list<std::string> fields = {"Exif.GPSInfo.GPSLatitude",
"Exif.GPSInfo.GPSLongitude",
"Exif.GPSInfo.GPSMapDatum",
"Exif.GPSInfo.GPSLatitudeRef",
"Exif.GPSInfo.GPSLongitudeRef",
"Exif.GPSInfo.GPSLatitude",
"Exif.GPSInfo.GPSLongitude",
"Exif.GPSInfo.GPSAltitude",
"Exif.GPSInfo.GPSAltitudeRef",
"Exif.GPSInfo.GPSTimeStamp",
"Exif.GPSInfo.GPSDateStamp",};
for (auto fname : fields) {
auto key = Exiv2::ExifKey(fname.c_str());
auto iter = exifData.findKey(key);
while (iter != exifData.end()) {
exifData.erase(iter);
iter = exifData.findKey(key);
}
}
}
bool ptImageHelper::WriteExif(const QString &AFileName,
const std::vector<uint8_t> &AExifBuffer,
Exiv2::IptcData &AIptcData,
Exiv2::XmpData &AXmpData) {
try {
#if EXIV2_TEST_VERSION(0,17,91) /* Exiv2 0.18-pre1 */
Exiv2::ExifData hInExifData;
Exiv2::ExifParser::decode(hInExifData,
AExifBuffer.data() + CExifHeader.size(),
AExifBuffer.size() - CExifHeader.size());
// Reset orientation
Exiv2::ExifData::iterator pos = hInExifData.begin();
if ((pos = hInExifData.findKey(Exiv2::ExifKey("Exif.Image.Orientation"))) != hInExifData.end()) {
pos->setValue("1"); // Normal orientation
}
// Adapted from UFRaw, necessary for Tiff files
QStringList ExifKeys;
ExifKeys << "Exif.Image.ImageWidth"
<< "Exif.Image.ImageLength"
<< "Exif.Image.BitsPerSample"
<< "Exif.Image.Compression"
<< "Exif.Image.PhotometricInterpretation"
<< "Exif.Image.FillOrder"
<< "Exif.Image.SamplesPerPixel"
<< "Exif.Image.StripOffsets"
<< "Exif.Image.RowsPerStrip"
<< "Exif.Image.StripByteCounts"
<< "Exif.Image.XResolution"
<< "Exif.Image.YResolution"
<< "Exif.Image.PlanarConfiguration"
<< "Exif.Image.ResolutionUnit";
for (short i = 0; i < ExifKeys.count(); i++) {
if ((pos = hInExifData.findKey(Exiv2::ExifKey(ExifKeys.at(i).toLocal8Bit().data()))) != hInExifData.end())
hInExifData.erase(pos);
}
if (Settings->GetInt("EraseExifThumbnail")) {
Exiv2::ExifThumb Thumb(hInExifData);
Thumb.erase();
}
QStringList JpegExtensions;
JpegExtensions << "jpg" << "JPG" << "Jpg" << "jpeg" << "Jpeg" << "JPEG";
bool deleteDNGdata = false;
for (short i = 0; i < JpegExtensions.count(); i++) {
if (!AFileName.endsWith(JpegExtensions.at(i))) deleteDNGdata = true;
}
Exiv2::Image::AutoPtr Exiv2Image = Exiv2::ImageFactory::open(AFileName.toLocal8Bit().data());
Exiv2Image->readMetadata();
Exiv2::ExifData outExifData = Exiv2Image->exifData();
for (auto hPos = hInExifData.begin(); hPos != hInExifData.end(); hPos++) {
if (!deleteDNGdata || (*hPos).key() != "Exif.Image.DNGPrivateData") {
outExifData.add(*hPos);
}
}
// IPTC data
QStringList Tags = Settings->GetStringList("TagsList");
QStringList DigikamTags = Settings->GetStringList("DigikamTagsList");
Exiv2::StringValue StringValue;
for (int i = 0; i < Tags.size(); i++) {
StringValue.read(Tags.at(i).toStdString());
AIptcData.add(Exiv2::IptcKey("Iptc.Application2.Keywords"), &StringValue);
}
// XMP data
for (int i = 0; i < Tags.size(); i++) {
AXmpData["Xmp.dc.subject"] = Tags.at(i).toStdString();
}
for (int i = 0; i < DigikamTags.size(); i++) {
AXmpData["Xmp.digiKam.TagsList"] = DigikamTags.at(i).toStdString();
}
// Image rating
outExifData["Exif.Image.Rating"] = Settings->GetInt("ImageRating");
AXmpData["Xmp.xmp.Rating"] = Settings->GetInt("ImageRating");
// Program name
outExifData["Exif.Image.ProcessingSoftware"] = ProgramName;
outExifData["Exif.Image.Software"] = ProgramName;
AIptcData["Iptc.Application2.Program"] = ProgramName;
AIptcData["Iptc.Application2.ProgramVersion"] = "idle";
AXmpData["Xmp.xmp.CreatorTool"] = ProgramName;
AXmpData["Xmp.tiff.Software"] = ProgramName;
// Title
QString TitleWorking = Settings->GetString("ImageTitle");
StringClean(TitleWorking);
if (TitleWorking != "") {
outExifData["Exif.Photo.UserComment"] = TitleWorking.toStdString();
AIptcData["Iptc.Application2.Caption"] = TitleWorking.toStdString();
AXmpData["Xmp.dc.description"] = TitleWorking.toStdString();
AXmpData["Xmp.exif.UserComment"] = TitleWorking.toStdString();
AXmpData["Xmp.tiff.ImageDescription"] = TitleWorking.toStdString();
}
// Copyright
QString CopyrightWorking = Settings->GetString("Copyright");
StringClean(CopyrightWorking);
if (CopyrightWorking != "") {
outExifData["Exif.Image.Copyright"] = CopyrightWorking.toStdString();
AIptcData["Iptc.Application2.Copyright"] = CopyrightWorking.toStdString();
AXmpData["Xmp.tiff.Copyright"] = CopyrightWorking.toStdString();
}
Exiv2Image->setExifData(outExifData);
Exiv2Image->setIptcData(AIptcData);
Exiv2Image->setXmpData(AXmpData);
Exiv2Image->writeMetadata();
return true;
#endif
} catch (Exiv2::AnyError& Error) {
if (Settings->GetInt("JobMode") == 0) {
ptMessageBox::warning(0 ,"Exiv2 Error","No exif data written!\nCaught Exiv2 exception '" + QString(Error.what()) + "'\n");
} else {
std::cout << "Caught Exiv2 exception '" << Error << "'\n";
}
}
return false;
}
// [Private]
//
// Exif.GPSInfo.GPSLatitudeRef (Ascii)
// Indicates whether the latitude is north or south latitude.
// The ASCII value 'N' indicates north latitude, and 'S' is south latitude.
//
// Exif.GpsInfo.GPSLatitude (Rational)
// Indicates the latitude. The latitude is expressed as three RATIONAL values
// giving the degrees, minutes, and seconds, respectively.
// When degrees, minutes and seconds are expressed, the format is dd/1,mm/1,ss/1.
// When degrees and minutes are used and, for example, fractions of minutes
// are given up to two decimal places, the format is dd/1,mmmm/100,0/1.
//
// Exif.GPSInfo.GPSLongitudeRef (Ascii)
// Indicates whether the longitude is east or west longitude.
// ASCII 'E' indicates east longitude, and 'W' is west longitude.
//
// Exif.GPSInfo.GPSLongitude (Rational)
// Indicates the longitude. The longitude is expressed as three RATIONAL values
// giving the degrees, minutes, and seconds, respectively.
// When degrees, minutes and seconds are expressed, the format is ddd/1,mm/1,ss/1.
// When degrees and minutes are used and, for example, fractions of minutes are
// given up to two decimal places, the format is ddd/1,mmmm/100,0/1.
//
bool QExiv2::exifGpsCoordinate(const QString &coordTag, const QString &refTag, double *value) const
{
const QByteArray ref = exifTagData(refTag.toLatin1().constData());
if (ref.isEmpty()) {
return false;
}
bool dir = false;
switch (ref[0]) {
case 'N':
case 'E':
break;
case 'S':
case 'W':
dir = true;
break;
default:
qWarning() << Q_FUNC_INFO << "Invalid Ref. data:" << ref[0];
return false;
}
double degrees;
const Exiv2::ExifKey key(coordTag.toLatin1().constData());
const Exiv2::ExifData data(d->exifMetadata);
Exiv2::ExifData::const_iterator it = data.findKey(key);
if (it != data.end() && (*it).count() == 3) {
// Latitude decoding from Exif.
double num;
double den;
// .toRational(long n) Return the n-th component of the value converted
// to Rational. The return value is -1/1 if the value is not set and the
// behaviour of the method is undefined if there is no n-th component.
num = (double)((*it).toRational(0).first);
den = (double)((*it).toRational(0).second);
if (den == 0) {
return false;
}
degrees = num/den;
// Calc minutes
num = (double)((*it).toRational(1).first);
den = (double)((*it).toRational(1).second);
if (den == 0) {
return false;
}
double v;
v = num/den;
if (v != -1.0) {
degrees += v / 60.0;
}
// Calc seconds
num = (double)((*it).toRational(2).first);
den = (double)((*it).toRational(2).second);
if (den == 0) {
// Accept 0/0 seconds.
if (num == 0) {
den = 1;
} else {
return false;
}
}
v = num/den;
if (v != -1.0) {
degrees += v / 3600.0;
}
if (dir) {
degrees *= -1.0;
}
*value = degrees;
return true;
}
return false;
}
// *****************************************************************************
// Main
int main()
try {
// Container for all metadata
Exiv2::ExifData exifData;
// *************************************************************************
// Add to the Exif data
// Create a ASCII string value (note the use of create)
Exiv2::Value* v = Exiv2::Value::create(Exiv2::asciiString);
// Set the value to a string
v->read("1999:12:31 23:59:59");
// Add the value together with its key to the Exif data container
Exiv2::ExifKey key("Exif.Photo.DateTimeOriginal");
exifData.add(key, v);
std::cout << "Added key \"" << key << "\", value \"" << *v << "\"\n";
// Delete the memory allocated by Value::create
delete v;
// Now create a more interesting value (without using the create method)
Exiv2::URationalValue* rv = new Exiv2::URationalValue;
// Set two rational components from a string
rv->read("1/2 1/3");
// Add more elements through the extended interface of rational value
rv->value_.push_back(std::make_pair(2,3));
rv->value_.push_back(std::make_pair(3,4));
// Add the key and value pair to the Exif data
key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
exifData.add(key, rv);
std::cout << "Added key \"" << key << "\", value \"" << *rv << "\"\n";
// Delete memory allocated on the heap
delete rv;
// *************************************************************************
// Modify Exif data
// Find the timestamp metadatum by its key
key = Exiv2::ExifKey("Exif.Photo.DateTimeOriginal");
Exiv2::ExifData::iterator pos = exifData.findKey(key);
if (pos == exifData.end()) throw Exiv2::Error("Key not found");
// Modify the value
std::string date = pos->toString();
date.replace(0,4,"2000");
pos->setValue(date);
std::cout << "Modified key \"" << key
<< "\", new value \"" << pos->value() << "\"\n";
// Find the other key
key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
pos = exifData.findKey(key);
if (pos == exifData.end()) throw Exiv2::Error("Key not found");
// Get a pointer to a copy of the value
v = pos->getValue();
// Downcast the Value pointer to its actual type
rv = dynamic_cast<Exiv2::URationalValue*>(v);
if (rv == 0) throw Exiv2::Error("Downcast failed");
// Modify the value directly through the interface of URationalValue
rv->value_[2] = std::make_pair(88,77);
// Copy the modified value back to the metadatum
pos->setValue(rv);
// Delete the memory allocated by getValue
delete v;
std::cout << "Modified key \"" << key
<< "\", new value \"" << pos->value() << "\"\n";
// *************************************************************************
// Delete metadata from the Exif data container
// Delete the metadatum at iterator position pos
key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
pos = exifData.findKey(key);
if (pos == exifData.end()) throw Exiv2::Error("Key not found");
exifData.erase(pos);
std::cout << "Deleted key \"" << key << "\"\n";
// *************************************************************************
// Finally, write the remaining Exif data to an image file
int rc = exifData.write("img_2158.jpg");
if (rc) {
std::string error = Exiv2::ExifData::strError(rc, "img_2158.jpg");
throw Exiv2::Error(error);
}
return 0;
}
catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return -1;
}
bool KExiv2::Private::saveOperations(const QFileInfo& finfo, Exiv2::Image::AutoPtr image) const
{
try
{
Exiv2::AccessMode mode;
bool wroteComment = false, wroteEXIF = false, wroteIPTC = false, wroteXMP = false;
// We need to load target file metadata to merge with new one. It's mandatory with TIFF format:
// like all tiff file structure is based on Exif.
image->readMetadata();
// Image Comments ---------------------------------
mode = image->checkMode(Exiv2::mdComment);
if ((mode == Exiv2::amWrite) || (mode == Exiv2::amReadWrite))
{
image->setComment(imageComments());
wroteComment = true;
}
// Exif metadata ----------------------------------
mode = image->checkMode(Exiv2::mdExif);
if ((mode == Exiv2::amWrite) || (mode == Exiv2::amReadWrite))
{
if (image->mimeType() == "image/tiff")
{
Exiv2::ExifData orgExif = image->exifData();
Exiv2::ExifData newExif;
QStringList untouchedTags;
// With tiff image we cannot overwrite whole Exif data as well, because
// image data are stored in Exif container. We need to take a care about
// to not lost image data.
untouchedTags << "Exif.Image.ImageWidth";
untouchedTags << "Exif.Image.ImageLength";
untouchedTags << "Exif.Image.BitsPerSample";
untouchedTags << "Exif.Image.Compression";
untouchedTags << "Exif.Image.PhotometricInterpretation";
untouchedTags << "Exif.Image.FillOrder";
untouchedTags << "Exif.Image.SamplesPerPixel";
untouchedTags << "Exif.Image.StripOffsets";
untouchedTags << "Exif.Image.RowsPerStrip";
untouchedTags << "Exif.Image.StripByteCounts";
untouchedTags << "Exif.Image.XResolution";
untouchedTags << "Exif.Image.YResolution";
untouchedTags << "Exif.Image.PlanarConfiguration";
untouchedTags << "Exif.Image.ResolutionUnit";
for (Exiv2::ExifData::iterator it = orgExif.begin(); it != orgExif.end(); ++it)
{
if (untouchedTags.contains(it->key().c_str()))
{
newExif[it->key().c_str()] = orgExif[it->key().c_str()];
}
}
Exiv2::ExifData readedExif = exifMetadata();
for (Exiv2::ExifData::iterator it = readedExif.begin(); it != readedExif.end(); ++it)
{
if (!untouchedTags.contains(it->key().c_str()))
{
newExif[it->key().c_str()] = readedExif[it->key().c_str()];
}
}
image->setExifData(newExif);
}
else
{
image->setExifData(exifMetadata());
}
wroteEXIF = true;
}
// Iptc metadata ----------------------------------
mode = image->checkMode(Exiv2::mdIptc);
if ((mode == Exiv2::amWrite) || (mode == Exiv2::amReadWrite))
{
image->setIptcData(iptcMetadata());
wroteIPTC = true;
}
// Xmp metadata -----------------------------------
mode = image->checkMode(Exiv2::mdXmp);
if ((mode == Exiv2::amWrite) || (mode == Exiv2::amReadWrite))
{
#ifdef _XMP_SUPPORT_
image->setXmpData(xmpMetadata());
wroteXMP = true;
#endif
}
if (!wroteComment && !wroteEXIF && !wroteIPTC && !wroteXMP)
{
kDebug() << "Writing metadata is not supported for file" << finfo.fileName();
return false;
}
else if (!wroteEXIF || !wroteIPTC || !wroteXMP)
{
kDebug() << "Support for writing metadata is limited for file" << finfo.fileName()
<< "EXIF" << wroteEXIF << "IPTC" << wroteIPTC << "XMP" << wroteXMP;
}
if (!updateFileTimeStamp)
{
// Don't touch access and modification timestamp of file.
struct stat st;
::stat(QFile::encodeName(filePath), &st);
struct utimbuf ut;
ut.modtime = st.st_mtime;
ut.actime = st.st_atime;
image->writeMetadata();
::utime(QFile::encodeName(filePath), &ut);
}
else
{
image->writeMetadata();
}
return true;
}
catch( Exiv2::Error& e )
{
printExiv2ExceptionError("Cannot save metadata using Exiv2 ", e);
}
return false;
}
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;
}
// *****************************************************************************
// Main
int main(int argc, char* const argv[])
try {
if (argc != 2) {
std::cout << "Usage: " << argv[0] << " file\n";
return 1;
}
Exiv2::ExifData exifData;
int rc = exifData.read(argv[1]);
if (rc) {
std::string error = Exiv2::ExifData::strError(rc, argv[1]);
throw Exiv2::Error(error);
}
/*
There are two pitfalls that we need to consider when setting the Exif user
comment (Exif.Photo.UserComment) of an image:
First, the type of the Exif user comment tag is "undefined" (and not
ASCII) according to the Exif standard. This means that in Exiv2, we have
to deal with a DataValue (and not an AsciiValue). DataValue has the usual
two read methods, however, the one taking a const std::string& buf expects
the string to contain a series of integers (e.g., "0 1 2") and not a text
string. Thus, we need to use the read function that reads the value from a
character buffer of a given length.
Second, the Exif comment field starts with an eight character area that
identifies the used character set. For ASCII, these eight characters are
"ASCII\0\0\0". The actual comment follows after this code.
Note: There is a more simple Exif tag for the title of an image. It is a
20 byte string (type ASCII) and does not store two-byte characters.
(Image.OtherTags.ImageDescription)
*/
// Initialise a data value with the character set and comment
std::string charset("ASCII\0\0\0", 8);
std::string comment("A comment added to the Exif metadata through Exiv2");
Exiv2::DataValue value;
value.read(reinterpret_cast<const Exiv2::byte*>((charset + comment).data()),
8 + static_cast<long>(comment.size()));
// Set the Exif comment
Exiv2::ExifKey key("Exif.Photo.UserComment");
Exiv2::ExifData::iterator pos = exifData.findKey(key);
if (pos != exifData.end()) {
// Use the existing Exif UserComment metadatum if there is one
pos->setValue(&value);
}
else {
// Otherwise add a new UserComment metadatum
exifData.add(key, &value);
pos = exifData.findKey(key);
}
// Now we should have a valid iterator in any case. We use the metadatum
// output operator to print the formatted value
std::cout << "Writing user comment '" << *pos << "' back to the image\n";
rc = exifData.write(argv[1]);
if (rc) {
std::string error = Exiv2::ExifData::strError(rc, argv[1]);
throw Exiv2::Error(error);
}
return rc;
}
catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e << "'\n";
return -1;
}
bool KisExifIO::loadFrom(KisMetaData::Store* store, QIODevice* ioDevice) const
{
ioDevice->open(QIODevice::ReadOnly);
if (!ioDevice->isOpen()) {
return false;
}
QByteArray arr = ioDevice->readAll();
Exiv2::ExifData exifData;
Exiv2::ByteOrder byteOrder;
#if EXIV2_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION <= 17
exifData.load((const Exiv2::byte*)arr.data(), arr.size());
byteOrder = exifData.byteOrder();
#else
try {
byteOrder = Exiv2::ExifParser::decode(exifData, (const Exiv2::byte*)arr.data(), 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
dbgFile << "Byte order = " << byteOrder << ppVar(Exiv2::bigEndian) << ppVar(Exiv2::littleEndian);
dbgFile << "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);
for (Exiv2::ExifMetadata::const_iterator it = exifData.begin();
it != exifData.end(); ++it) {
if (it->key() == "Exif.Photo.StripOffsets"
|| it->key() == "RowsPerStrip"
|| it->key() == "StripByteCounts"
|| it->key() == "JPEGInterchangeFormat"
|| it->key() == "JPEGInterchangeFormatLength"
|| it->tagName() == "0x0000" ) {
dbgFile << it->key().c_str() << " is ignored";
} else if (it->key() == "Exif.Photo.MakerNote") {
const KisMetaData::Schema* makerNoteSchema = KisMetaData::SchemaRegistry::instance()->schemaFromUri(KisMetaData::Schema::MakerNoteSchemaUri);
store->addEntry(KisMetaData::Entry(makerNoteSchema, "RawData", exivValueToKMDValue(it->getValue(), false)));
} else if (it->key() == "Exif.Image.DateTime") { // load as xmp:ModifyDate
store->addEntry(KisMetaData::Entry(xmpSchema, "ModifyDate", KisMetaData::Value(exivValueToDateTime(it->getValue()))));
} else if (it->key() == "Exif.Image.ImageDescription") { // load as "dc:description"
store->addEntry(KisMetaData::Entry(dcSchema, "description", exivValueToKMDValue(it->getValue(), false)));
} else if (it->key() == "Exif.Image.Software") { // load as "xmp:CreatorTool"
store->addEntry(KisMetaData::Entry(xmpSchema, "CreatorTool", exivValueToKMDValue(it->getValue(), false)));
} else if (it->key() == "Exif.Image.Artist") { // load as dc:creator
QList<KisMetaData::Value> creators;
creators.push_back(exivValueToKMDValue(it->getValue(), false));
store->addEntry(KisMetaData::Entry(dcSchema, "creator", KisMetaData::Value(creators, KisMetaData::Value::OrderedArray)));
} else if (it->key() == "Exif.Image.Copyright") { // load as dc:rights
store->addEntry(KisMetaData::Entry(dcSchema, "rights", exivValueToKMDValue(it->getValue(), false)));
} else if (it->groupName() == "Image") {
// Tiff tags
QString fixedTN = it->tagName().c_str();
if (it->key() == "Exif.Image.ExifTag") {
dbgFile << "Ignoring " << it->key().c_str();
} else if (KisMetaData::Entry::isValidName(fixedTN)) {
store->addEntry(KisMetaData::Entry(tiffSchema, fixedTN, exivValueToKMDValue(it->getValue(), false))) ;
} else {
dbgFile << "Invalid tag name: " << fixedTN;
}
} else if (it->groupName() == "Photo" || (it->groupName() == "GPS")) {
// Exif tags (and GPS tags)
KisMetaData::Value v;
if (it->key() == "Exif.Photo.ExifVersion" || it->key() == "Exif.Photo.FlashpixVersion") {
v = exifVersionToKMDValue(it->getValue());
} else if (it->key() == "Exif.Photo.FileSource") {
v = KisMetaData::Value(3);
} else if (it->key() == "Exif.Photo.SceneType") {
v = KisMetaData::Value(1);
} else if (it->key() == "Exif.Photo.ComponentsConfiguration") {
v = exifArrayToKMDIntOrderedArray(it->getValue());
} else if (it->key() == "Exif.Photo.OECF") {
v = exifOECFToKMDOECFStructure(it->getValue(), byteOrder);
} else if (it->key() == "Exif.Photo.DateTimeDigitized" || it->key() == "Exif.Photo.DateTimeOriginal") {
v = KisMetaData::Value(exivValueToDateTime(it->getValue()));
} else if (it->key() == "Exif.Photo.DeviceSettingDescription") {
v = deviceSettingDescriptionExifToKMD(it->getValue());
} else if (it->key() == "Exif.Photo.CFAPattern") {
v = cfaPatternExifToKMD(it->getValue(), byteOrder);
} else if (it->key() == "Exif.Photo.Flash") {
v = flashExifToKMD(it->getValue());
} else if (it->key() == "Exif.Photo.UserComment") {
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);
v = KisMetaData::Value(alt, KisMetaData::Value::LangArray);
} else {
bool forceSeq = false;
KisMetaData::Value::ValueType arrayType = KisMetaData::Value::UnorderedArray;
if (it->key() == "Exif.Photo.ISOSpeedRatings") {
forceSeq = true;
arrayType = KisMetaData::Value::OrderedArray;
}
v = exivValueToKMDValue(it->getValue(), forceSeq, arrayType);
}
if (it->key() == "Exif.Photo.InteroperabilityTag" || it->key() == "Exif.Photo.0xea1d") { // InteroperabilityTag isn't useful for XMP, 0xea1d isn't a valid Exif tag
dbgFile << "Ignoring " << it->key().c_str();
} else {
store->addEntry(KisMetaData::Entry(exifSchema, it->tagName().c_str(), v));
}
} else if (it->groupName() == "Thumbnail") {
dbgFile << "Ignoring thumbnail tag :" << it->key().c_str();
} else {
dbgFile << "Unknown exif tag, cannot load:" << it->key().c_str();
}
}
ioDevice->close();
return true;
}
long GalleryUtil::GetNaturalRotation(const QString &filePathString)
{
long rotateAngle = 0;
#ifdef EXIF_SUPPORT
QByteArray filePathBA = filePathString.toLocal8Bit();
const char *filePath = filePathBA.constData();
try
{
char *exifvalue = new char[1024];
ExifData *data = exif_data_new_from_file (filePath);
if (data)
{
for (int i = 0; i < EXIF_IFD_COUNT; i++)
{
ExifEntry *entry = exif_content_get_entry (data->ifd[i],
EXIF_TAG_ORIENTATION);
ExifByteOrder byteorder = exif_data_get_byte_order (data);
if (entry)
{
ExifShort v_short = exif_get_short (entry->data, byteorder);
VERBOSE(VB_GENERAL|VB_EXTRA, QString("Exif entry=%1").arg(v_short));
/* See http://sylvana.net/jpegcrop/exif_orientation.html*/
if (v_short == 8)
{
rotateAngle = -90;
}
else if (v_short == 6)
{
rotateAngle = 90;
}
break;
}
}
exif_data_free(data);
}
else
{
VERBOSE(VB_FILE, LOC_ERR +
QString("Could not load exif data from '%1'")
.arg(filePath));
}
delete [] exifvalue;
#if 0
Exiv2::ExifData exifData;
int rc = exifData.read(filePath);
if (!rc)
{
Exiv2::ExifKey key = Exiv2::ExifKey("Exif.Image.Orientation");
Exiv2::ExifData::iterator pos = exifData.findKey(key);
if (pos != exifData.end())
{
long orientation = pos->toLong();
switch (orientation)
{
case 6:
rotateAngle = 90;
break;
case 8:
rotateAngle = -90;
break;
default:
rotateAngle = 0;
break;
}
}
}
#endif
}
catch (...)
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
QString("Failed to extract EXIF headers from '%1'")
.arg(filePathString));
}
#else
// Shut the compiler up about the unused argument
(void)filePathString;
#endif // EXIF_SUPPORT
return rotateAngle;
}
bool tag_location( const std::string &filename, const location &loc)
{
bool result = false;
Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open( filename);
if (!image.get()) throw std::runtime_error( "could not open image file " + filename + " for metadata tags\n");
image->readMetadata();
Exiv2::ExifData data = image->exifData();
if (data.findKey( Exiv2::ExifKey("Exif.GPSInfo.GPSLatitude")) == data.end())
{
add_exif_coordinate( data, "Exif.GPSInfo.GPSLatitude", std::abs( loc.latitude));
add_exif_coordinate( data, "Exif.GPSInfo.GPSLongitude", std::abs( loc.longitude));
data["Exif.GPSInfo.GPSLatitudeRef"] = loc.latitude < 0 ? "S":"N";
data["Exif.GPSInfo.GPSLongitudeRef"] = loc.longitude < 0 ? "W":"E";
Exiv2::byte version[] = { 2, 0, 0, 0};
data["Exif.GPSInfo.GPSVersionID"].getValue()->read( version, 4, Exiv2::invalidByteOrder);
image->setExifData( data);
image->writeMetadata();
result = true;
}
return result;
}
