File indexing completed on 2024-05-12 04:46:37 

0001 // SPDX-License-Identifier: LGPL-3.0-or-later
0002 
0003 /*
0004     Copyright (C) 2012-15  Vishesh Handa <vhanda@kde.org>
0005 
0006     This library is free software; you can redistribute it and/or
0007     modify it under the terms of the GNU Lesser General Public
0008     License as published by the Free Software Foundation; either
0009     version 2.1 of the License, or (at your option) any later version.
0010 
0011     This library is distributed in the hope that it will be useful,
0012     but WITHOUT ANY WARRANTY; without even the implied warranty of
0013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0014     Lesser General Public License for more details.
0015 
0016     You should have received a copy of the GNU Lesser General Public
0017     License along with this library; if not, write to the Free Software
0018     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
0019 */
0020 
0021 #pragma once
0022 
0023 #include <exiv2/exiv2.hpp>
0024 
0025 #include <QString>
0026 #include <QVariant>
0027 #include <QUrl>
0028 
0029 #include "imagetools_export.h"
0030 
0031 typedef QMap<QString, QString> MetaDataMap;
0032 typedef QPair<double, double> Coordinates;
0033 
0034 class City;
0035 
0036 /**
0037  * @brief Image metadata extractor. 
0038  */
0039 class IMAGETOOLS_EXPORT Exiv2Extractor : public QObject
0040 {
0041 public:
0042     Exiv2Extractor(const QUrl &url, QObject * parent = nullptr);
0043    explicit Exiv2Extractor(QObject * parent = nullptr);
0044     
0045     void setUrl(const QUrl &url);
0046     
0047     Coordinates extractGPS() const;
0048 
0049     bool error() const;
0050     
0051     QString getExifTagString (const char *exifTagName, bool escapeCR=true) const;
0052     QByteArray getExifTagData (const char *exifTagName) const;
0053     QVariant getExifTagVariant (const char *exifTagName, bool rationalAsListOfInts=true, bool escapeCR=true, int component=0) const;
0054     MetaDataMap getExifTagsDataList( const QStringList & exifKeysFilter = QStringList(), bool invertSelection = false ) const;
0055     QString getExifComment() const;
0056     
0057     bool writeTag(const char *tagName, const QVariant &value);
0058     bool removeTag(const char *tagName);
0059     
0060     QString GPSString() const;
0061     QString cityId() const;
0062     City city() const;
0063     
0064 private:
0065     double fetchGpsDouble(const char *name) const;
0066 
0067     bool m_error;
0068     
0069     QUrl m_url;
0070        
0071     #if EXIV2_TEST_VERSION(0, 27, 99)
0072     Exiv2::Image::UniquePtr m_image;
0073     #else
0074     Exiv2::Image::AutoPtr m_image;
0075     #endif
0076 
0077     Exiv2::ExifData & exifData() const;
0078 };