bool NegativeProcessor::getRawExifTag(const char* exifTagName, int32 component, uint32* value) {
Exiv2::ExifData::const_iterator it = m_RawExif.findKey(Exiv2::ExifKey(exifTagName));
if ((it == m_RawExif.end()) || (it->count() < (component + 1))) return false;
*value = static_cast<uint32>(it->toLong(component));
return true;
}
int RafImage::pixelHeight() const
{
Exiv2::ExifData::const_iterator heightIter = exifData_.findKey(Exiv2::ExifKey("Exif.Photo.PixelYDimension"));
if (heightIter != exifData_.end() && heightIter->count() > 0) {
return heightIter->toLong();
}
return 0;
}
int RafImage::pixelWidth() const
{
Exiv2::ExifData::const_iterator widthIter = exifData_.findKey(Exiv2::ExifKey("Exif.Photo.PixelXDimension"));
if (widthIter != exifData_.end() && widthIter->count() > 0) {
return widthIter->toLong();
}
return 0;
}
const long getExiv2ValueLong(Exiv2::ExifData& exifData, Exiv2::ExifData::const_iterator it)
{
if(it!=exifData.end() && it->count())
{
return it->toLong();
}
return 0;
};
int NegativeProcessor::getRawExifTag(const char* exifTagName, int16* valueArray, int32 maxFill) {
Exiv2::ExifData::const_iterator it = m_RawExif.findKey(Exiv2::ExifKey(exifTagName));
if (it == m_RawExif.end()) return 0;
int lengthToFill = std::min(maxFill, static_cast<int32>(it->count()));
for (int i = 0; i < lengthToFill; i++)
valueArray[i] = static_cast<int16>(it->toLong(i));
return lengthToFill;
}
void ImageResolution::readexiv(char const *fn) {
Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(fn);
if (!image.get())
return;
image->readMetadata();
Exiv2::ExifData &exifData = image->exifData();
if (exifData.empty())
return;
Exiv2::ExifData::const_iterator end = exifData.end();
bool havex = false;
bool havey = false;
bool haveunit = false;
int unit;
for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
if (ok_)
break;
if (i->tag()==0x011a) {
// X Resolution
x_ = i->toFloat();
havex = true;
} else if (i->tag()==0x011b) {
// Y Resolution
y_ = i->toFloat();
havey = true;
} else if (i->tag()==0x0128) {
unit = i->toLong();
}
ok_ = havex && havey && haveunit;
}
if (haveunit) {
if (unit==3) {
x_ *= 2.54;
y_ *= 2.54;
}
}
ok_ = havex && havey;
}
QVariantMap QgsExifTools::readTags( const QString &imagePath )
{
std::unique_ptr< Exiv2::Image > image( Exiv2::ImageFactory::open( imagePath.toStdString() ) );
if ( !image )
return QVariantMap();
image->readMetadata();
Exiv2::ExifData &exifData = image->exifData();
if ( exifData.empty() )
{
return QVariantMap();
}
QVariantMap res;
Exiv2::ExifData::const_iterator end = exifData.end();
for ( Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i )
{
const QString key = QString::fromStdString( i->key() );
QVariant val;
switch ( i->typeId() )
{
case Exiv2::asciiString:
case Exiv2::string:
case Exiv2::comment:
case Exiv2::directory:
case Exiv2::xmpText:
val = QString::fromStdString( i->toString() );
break;
case Exiv2::unsignedLong:
case Exiv2::signedLong:
val = QVariant::fromValue( i->toLong() );
break;
case Exiv2::tiffDouble:
case Exiv2::tiffFloat:
val = QVariant::fromValue( i->toFloat() );
break;
case Exiv2::unsignedShort:
case Exiv2::signedShort:
val = QVariant::fromValue( static_cast< int >( i->toLong() ) );
break;
case Exiv2::unsignedRational:
case Exiv2::signedRational:
case Exiv2::unsignedByte:
case Exiv2::signedByte:
case Exiv2::undefined:
case Exiv2::tiffIfd:
case Exiv2::date:
case Exiv2::time:
case Exiv2::xmpAlt:
case Exiv2::xmpBag:
case Exiv2::xmpSeq:
case Exiv2::langAlt:
case Exiv2::invalidTypeId:
case Exiv2::lastTypeId:
val = QString::fromStdString( i->toString() );
break;
}
res.insert( key, val );
}
return res;
}
