Exemple #1
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("");
 };
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;
}