exif_internal.h

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/*
    This file is part of Ansel,
    Copyright (C) 2026 Aurélien PIERRE.
 
    Ansel is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    Ansel is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with Ansel.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef DT_METADATA_EXIF_INTERNAL_H
#define DT_METADATA_EXIF_INTERNAL_H
 
#include "common/global_mutexes.h"
#include "common/image.h"
 
#include <exiv2/exiv2.hpp>
#include <string>
 
class Lock
{
public:
  Lock() { dt_pthread_mutex_lock(dt_exiv2_threadsafe_mutex()); }
  ~Lock() { dt_pthread_mutex_unlock(dt_exiv2_threadsafe_mutex()); }
};
 
#define read_metadata_threadsafe(image)                       \
{                                                             \
  Lock exiv2_lock;                                            \
  image->readMetadata();                                      \
}
 
void dt_remove_exif_keys(Exiv2::ExifData &exif, const char *keys[], unsigned int n_keys);
 
bool dt_exif_read_exif_tag(Exiv2::ExifData &exifData, Exiv2::ExifData::const_iterator *pos,
                           std::string key);
 
bool dt_exif_decode_xmp_data(dt_image_t *img, Exiv2::XmpData &xmpData, int version,
                             bool exif_read);
 
#endif // DT_METADATA_EXIF_INTERNAL_H
 
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