exif.h

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/*
    This file is part of darktable,
    Copyright (C) 2009-2020 darktable developers.
 
    darktable 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.
 
    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#pragma once
 
#include "common/colorspaces.h"
#include "common/image.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef enum dt_dng_illuminant_t // from adobes dng_sdk
{
  DT_LS_Unknown              =  0,
  DT_LS_Daylight             =  1,
  DT_LS_Fluorescent          =  2,
  DT_LS_Tungsten             =  3,
  DT_LS_Flash                =  4,
  DT_LS_FineWeather          =  9,
  DT_LS_CloudyWeather        = 10,
  DT_LS_Shade                = 11,
  DT_LS_DaylightFluorescent  = 12, // D  5700 - 7100K
  DT_LS_DayWhiteFluorescent  = 13, // N  4600 - 5500K
  DT_LS_CoolWhiteFluorescent = 14, // W  3800 - 4500K
  DT_LS_WhiteFluorescent     = 15, // WW 3250 - 3800K
  DT_LS_WarmWhiteFluorescent = 16, // L  2600 - 3250K
  DT_LS_StandardLightA       = 17,
  DT_LS_StandardLightB       = 18,
  DT_LS_StandardLightC       = 19,
  DT_LS_D55                  = 20,
  DT_LS_D65                  = 21,
  DT_LS_D75                  = 22,
  DT_LS_D50                  = 23,
  DT_LS_ISOStudioTungsten    = 24,
  DT_LS_Other                = 255
} dt_dng_illuminant_t;
 
 
void dt_exif_set_exiv2_taglist();
 
const GList* dt_exif_get_exiv2_taglist();
 
int dt_exif_read(dt_image_t *img, const char *path);
 
int dt_exif_read_from_blob(dt_image_t *img, uint8_t *blob, const int size);
 
int dt_exif_read_blob(uint8_t **blob, const char *path, const int32_t imgid, const int sRGB, const int out_width,
                      const int out_height, const int dng_mode);
 
void dt_exif_img_check_additional_tags(dt_image_t *img, const char *filename);
 
int dt_exif_write_blob(uint8_t *blob, uint32_t size, const char *path, const int compressed);
 
int dt_exif_xmp_write(const int32_t imgid, const char *filename);
 
int dt_exif_xmp_attach_export(const int32_t imgid, const char *filename, void *metadata);
 
char *dt_exif_xmp_read_string(const int32_t imgid);
 
int dt_exif_xmp_read(dt_image_t *img, const char *filename, const int history_only);
 
int dt_exif_get_thumbnail(const char *path, uint8_t **buffer, size_t *size, char **mime_type, int *width, int *height, int min_width);
 
void dt_exif_init();
void dt_exif_cleanup();
 
char *dt_exif_xmp_encode(const unsigned char *input, const int len, int *output_len);
char *dt_exif_xmp_encode_internal(const unsigned char *input, const int len, int *output_len, gboolean do_compress);
unsigned char *dt_exif_xmp_decode(const char *input, const int len, int *output_len);
 
dt_colorspaces_color_profile_type_t dt_exif_get_color_space(const uint8_t *data, size_t size);
 
void dt_exif_get_datetime_taken(const uint8_t *data, size_t size, char *datetime_taken);
 
#ifdef __cplusplus
}
#endif
 
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