exif.cc File Reference

#include <errno.h>
#include <glib.h>
#include <sqlite3.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <zlib.h>
#include <array>
#include <cassert>
#include <cmath>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <exiv2/exiv2.hpp>
#include <pugixml.hpp>
#include "common/colorlabels.h"
#include "common/darktable.h"
#include "common/debug.h"
#include "common/dng_opcode.h"
#include "common/image_cache.h"
#include "common/imageio.h"
#include "common/exif.h"
#include "common/imageio_jpeg.h"
#include "common/metadata.h"
#include "common/ratings.h"
#include "common/tags.h"
#include "common/iop_order.h"
#include "common/variables.h"
#include "common/utility.h"
#include "common/history.h"
#include "common/datetime.h"
#include "control/conf.h"
#include "control/control.h"
#include "develop/imageop.h"
#include "develop/blend.h"
#include "develop/masks.h"

Include dependency graph for exif.cc:

Data Structures
class	Lock
struct	history_entry_t
struct	mask_entry_t

Macros
#define	__STDC_FORMAT_MACROS
#define	WIDEN(s)   (s)
#define	DT_XMP_EXIF_VERSION   5
#define	read_metadata_threadsafe(image)
#define	FIND_XMP_TAG(key)   dt_exif_read_xmp_tag(xmpData, &pos, key)
#define	FIND_IPTC_TAG(key)   dt_exif_read_iptc_tag(iptcData, &pos, key)
#define	FIND_EXIF_TAG(key)   _exif_read_exif_tag(exifData, &pos, key)
#define	COMPRESS_THRESHOLD   100
#define	TO_BINARY(a)   (a > 57 ? a - 97 + 10 : a - 48)
#define	ERROR_CODE(a)   (a)

Typedefs
typedef struct history_entry_t	history_entry_t
typedef struct mask_entry_t	mask_entry_t

Functions
static const char *	_get_exiv2_type (const int type)
static void	_get_xmp_tags (const char *prefix, GList **taglist)
static int	_illu_to_temp (dt_dng_illuminant_t illu)
void	dt_exif_set_exiv2_taglist ()
const GList *	dt_exif_get_exiv2_taglist ()
static const char *	_exif_get_exiv2_tag_type (const char *tagname)
static void	_exif_import_tags (dt_image_t *img, Exiv2::XmpData::iterator &pos)
static void	read_xmp_timestamps (Exiv2::XmpData &xmpData, dt_image_t *img, const int xmp_version)
static void	dt_strlcpy_to_utf8 (char *dest, size_t dest_max, Exiv2::ExifData::const_iterator &pos, Exiv2::ExifData &exifData)
static void	dt_remove_known_keys (Exiv2::XmpData &xmp)
static void	dt_remove_exif_keys (Exiv2::ExifData &exif, const char *keys[], unsigned int n_keys)
static void	dt_remove_xmp_keys (Exiv2::XmpData &xmp, const char *keys[], unsigned int n_keys)
static bool	dt_exif_read_xmp_tag (Exiv2::XmpData &xmpData, Exiv2::XmpData::iterator *pos, string key)
static bool	_exif_decode_xmp_data (dt_image_t *img, Exiv2::XmpData &xmpData, int version, bool exif_read)
static bool	dt_exif_read_iptc_tag (Exiv2::IptcData &iptcData, Exiv2::IptcData::const_iterator *pos, string key)
static bool	_exif_decode_iptc_data (dt_image_t *img, Exiv2::IptcData &iptcData)
static bool	_exif_read_exif_tag (Exiv2::ExifData &exifData, Exiv2::ExifData::const_iterator *pos, string key)
static bool	_check_usercrop (Exiv2::ExifData &exifData, dt_image_t *img)
static gboolean	_check_dng_opcodes (Exiv2::ExifData &exifData, dt_image_t *img)
void	dt_exif_img_check_additional_tags (dt_image_t *img, const char *filename)
static void	_find_datetime_taken (Exiv2::ExifData &exifData, Exiv2::ExifData::const_iterator pos, char *exif_datetime_taken)
static void	_find_exif_maker (Exiv2::ExifData &exifData, Exiv2::ExifData::const_iterator pos, char *maker, const size_t m_size)
static void	_find_exif_model (Exiv2::ExifData &exifData, Exiv2::ExifData::const_iterator pos, char *model, const size_t m_size)
static bool	_exif_decode_exif_data (dt_image_t *img, Exiv2::ExifData &exifData)
int	dt_exif_read_from_blob (dt_image_t *img, uint8_t *blob, const int size)
int	dt_exif_get_thumbnail (const char *path, uint8_t **buffer, size_t *size, char **mime_type, int *width, int *height, int min_width)
int	dt_exif_read (dt_image_t *img, const char *path)
int	dt_exif_write_blob (uint8_t *blob, uint32_t size, const char *path, const int compressed)
static void	dt_remove_exif_geotag (Exiv2::ExifData &exifData)
int	dt_exif_read_blob (uint8_t **buf, const char *path, const int32_t imgid, const int sRGB, const int out_width, const int out_height, const int dng_mode)
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)
static void	print_history_entry (history_entry_t *entry) __attribute__((unused))
static void	free_history_entry (gpointer data)
static GList *	read_history_v1 (const std::string &xmpPacket, const char *filename, const int superold)
static GList *	read_history_v2 (Exiv2::XmpData &xmpData, const char *filename)
void	free_mask_entry (gpointer data)
static GHashTable *	read_masks (Exiv2::XmpData &xmpData, const char *filename, const int version)
static GList *	read_masks_v3 (Exiv2::XmpData &xmpData, const char *filename, const int version)
static void	add_mask_entry_to_db (int32_t imgid, mask_entry_t *entry)
static void	add_non_clone_mask_entries_to_db (gpointer key, gpointer value, gpointer user_data)
static void	add_mask_entries_to_db (int32_t imgid, GHashTable *mask_entries, int mask_id)
int	_get_max_multi_priority (GList *history, const char *operation)
static gboolean	_image_altered_deprecated (const int32_t imgid)
int	dt_exif_xmp_read (dt_image_t *img, const char *filename, const int history_only)
static void	dt_set_xmp_dt_history (Exiv2::XmpData &xmpData, const int32_t imgid, int history_end)
static void	set_xmp_timestamps (Exiv2::XmpData &xmpData, const int32_t imgid)
GTimeSpan	_convert_unix_to_gtimespan (const time_t unix)
static void	dt_remove_xmp_exif_geotag (Exiv2::XmpData &xmpData)
static void	dt_set_xmp_exif_geotag (Exiv2::XmpData &xmpData, double longitude, double latitude, double altitude)
static void	dt_set_xmp_dt_metadata (Exiv2::XmpData &xmpData, const int32_t imgid, const gboolean export_flag)
static void	_exif_xmp_read_data (Exiv2::XmpData &xmpData, const int32_t imgid)
static void	_exif_xmp_read_data_export (Exiv2::XmpData &xmpData, const int32_t imgid, dt_export_metadata_t *metadata)
char *	dt_exif_xmp_read_string (const int32_t imgid)
static void	dt_remove_xmp_key (Exiv2::XmpData &xmp, const char *key)
static void	_remove_xmp_keys (Exiv2::XmpData &xmpData, const char *key)
static void	dt_remove_exif_key (Exiv2::ExifData &exif, const char *key)
static void	dt_remove_iptc_key (Exiv2::IptcData &iptc, const char *key)
int	dt_exif_xmp_attach_export (const int32_t imgid, const char *filename, void *metadata)
int	dt_exif_xmp_write (const int32_t imgid, const char *filename)
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)
static void	dt_exif_log_handler (int log_level, const char *message)
void	dt_exif_init ()
void	dt_exif_cleanup ()

Variables
static GList *	exiv2_taglist = NULL
const char *	dt_xmp_keys []
static const guint	dt_xmp_keys_n = G_N_ELEMENTS(dt_xmp_keys)

Macro Definition Documentation

__STDC_FORMAT_MACROS

#define __STDC_FORMAT_MACROS

COMPRESS_THRESHOLD

#define COMPRESS_THRESHOLD   100

DT_XMP_EXIF_VERSION

#define DT_XMP_EXIF_VERSION   5

ERROR_CODE

#define ERROR_CODE

(

a

)

(a)

FIND_EXIF_TAG

#define FIND_EXIF_TAG

(

key

)

_exif_read_exif_tag(exifData, &pos, key)

FIND_IPTC_TAG

#define FIND_IPTC_TAG

(

key

)

dt_exif_read_iptc_tag(iptcData, &pos, key)

FIND_XMP_TAG

#define FIND_XMP_TAG

(

key

)

dt_exif_read_xmp_tag(xmpData, &pos, key)

read_metadata_threadsafe

#define read_metadata_threadsafe

(

image

)

Value:

{                                                             \
  Lock lock;                                                  \
  image->readMetadata();                                      \
}

TO_BINARY

#define TO_BINARY

(

a

)

(a > 57 ? a - 97 + 10 : a - 48)

WIDEN

#define WIDEN

(

s

)

(s)

Typedef Documentation

history_entry_t

typedef struct history_entry_t history_entry_t

mask_entry_t

typedef struct mask_entry_t mask_entry_t

Function Documentation

_check_dng_opcodes()

static gboolean _check_dng_opcodes ( Exiv2::ExifData &  exifData, dt_image_t *  img  )

static

References DT_DEBUG_IMAGEIO, dt_dng_opcode_process_opcode_list_2(), dt_vprint(), FALSE, and TRUE.

Referenced by _exif_decode_exif_data(), and dt_exif_img_check_additional_tags().

_check_usercrop()

static bool _check_usercrop ( Exiv2::ExifData &  exifData, dt_image_t *  img  )

static

References FALSE, TRUE, and dt_image_t::usercrop.

Referenced by _exif_decode_exif_data(), and dt_exif_img_check_additional_tags().

_convert_unix_to_gtimespan()

GTimeSpan _convert_unix_to_gtimespan

(

const time_t

unix

)

References dt_datetime_gdatetime_to_gtimespan().

Referenced by read_xmp_timestamps().

_exif_decode_exif_data()

static bool _exif_decode_exif_data ( dt_image_t *  img, Exiv2::ExifData &  exifData  )

static

Todo:

: Should the UserComment go into the description? Or do we need an extra field for this?

Todo:

: "Other" illuminant is currently unsupported

Todo:

: This is still a workaround

References _check_dng_opcodes(), _check_usercrop(), _find_datetime_taken(), _find_exif_maker(), _find_exif_model(), _illu_to_temp(), dt_image_t::colorspace, dt_image_t::d65_color_matrix, darktable, dt_datetime_exif_to_img(), DT_DATETIME_LENGTH, DT_DEBUG_IMAGEIO, dt_fast_hypotf(), DT_IMAGE_COLORSPACE_ADOBE_RGB, DT_IMAGE_COLORSPACE_SRGB, DT_IMAGE_HAS_ADDITIONAL_DNG_TAGS, dt_image_is_hdr(), dt_image_is_ldr(), DT_IMAGE_MONOCHROME, dt_image_orientation_to_flip_bits(), dt_image_refresh_makermodel(), dt_image_set_xmp_rating(), dt_imageio_set_hdr_tag(), dt_imageio_update_monochrome_workflow_tag(), DT_LS_CloudyWeather, DT_LS_CoolWhiteFluorescent, DT_LS_D50, DT_LS_D55, DT_LS_D65, DT_LS_D75, DT_LS_Daylight, DT_LS_DaylightFluorescent, DT_LS_DayWhiteFluorescent, DT_LS_FineWeather, DT_LS_Flash, DT_LS_Fluorescent, DT_LS_ISOStudioTungsten, DT_LS_Shade, DT_LS_StandardLightA, DT_LS_StandardLightB, DT_LS_StandardLightC, DT_LS_Tungsten, DT_LS_Unknown, DT_LS_WarmWhiteFluorescent, DT_LS_WhiteFluorescent, dt_metadata_set_import(), dt_strlcpy_to_utf8(), dt_tag_attach(), dt_tag_new(), dt_util_gps_elevation_to_number(), dt_util_gps_rationale_to_number(), dt_image_geoloc_t::elevation, dt_image_t::exif_aperture, dt_image_t::exif_crop, dt_image_t::exif_exposure, dt_image_t::exif_exposure_bias, dt_image_t::exif_focal_length, dt_image_t::exif_focus_distance, dt_image_t::exif_inited, dt_image_t::exif_iso, dt_image_t::exif_lens, dt_image_t::exif_maker, dt_image_t::exif_model, FALSE, dt_image_t::filename, FIND_EXIF_TAG, dt_image_t::flags, dt_image_t::geoloc, dt_image_t::id, dt_image_geoloc_t::latitude, dt_image_geoloc_t::longitude, mat3mul(), dt_image_t::orientation, sign(), TRUE, and darktable_t::unmuted.

Referenced by dt_exif_read(), and dt_exif_read_from_blob().

_exif_decode_iptc_data()

static bool _exif_decode_iptc_data ( dt_image_t *  img, Exiv2::IptcData &  iptcData  )

static

Todo:

: according to http://www.exiv2.org/doc/classExiv2_1_1Metadatum.html#63c2b87249ba96679c29e01218169124

References darktable, dt_datetime_exif_to_img(), DT_DEBUG_CONTROL_SIGNAL_RAISE, dt_metadata_set_import(), DT_SIGNAL_TAG_CHANGED, dt_tag_attach(), dt_tag_new(), dt_util_foo_to_utf8(), FALSE, dt_image_t::filename, FIND_IPTC_TAG, dt_image_t::id, key, darktable_t::signals, and TRUE.

Referenced by dt_exif_read().

_exif_decode_xmp_data()

static bool _exif_decode_xmp_data ( dt_image_t *  img, Exiv2::XmpData &  xmpData, int  version, bool  exif_read  )

static

Todo:

: according to http://www.exiv2.org/doc/classExiv2_1_1Metadatum.html#63c2b87249ba96679c29e01218169124

References _exif_import_tags(), dt_colorlabels_remove_labels(), dt_colorlabels_set_label(), dt_conf_get_bool(), dt_datetime_exif_to_img(), dt_image_get_xmp_mode(), dt_image_set_xmp_rating(), dt_metadata_clear(), dt_metadata_get_key(), DT_METADATA_NUMBER, dt_metadata_set_import(), dt_tag_set_tags(), dt_util_gps_elevation_to_number(), dt_util_gps_string_to_number(), dt_image_geoloc_t::elevation, dt_image_t::exif_lens, FALSE, dt_image_t::filename, FIND_XMP_TAG, dt_image_t::geoloc, dt_image_t::id, key, dt_image_geoloc_t::latitude, dt_image_geoloc_t::longitude, sign(), and TRUE.

Referenced by dt_exif_read(), and dt_exif_xmp_read().

_exif_get_exiv2_tag_type()

static const char * _exif_get_exiv2_tag_type ( const char *  tagname )

static

References exiv2_taglist.

Referenced by dt_exif_xmp_attach_export().

_exif_import_tags()

static void _exif_import_tags ( dt_image_t *  img, Exiv2::XmpData::iterator &  pos  )

static

References darktable, darktable_t::db, dt_database_get(), DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_BIND_TEXT, DT_DEBUG_SQLITE3_PREPARE_V2, and dt_image_t::id.

Referenced by _exif_decode_xmp_data().

_exif_read_exif_tag()

static bool _exif_read_exif_tag ( Exiv2::ExifData &  exifData, Exiv2::ExifData::const_iterator *  pos, string  key  )

static

References key.

Referenced by dt_exif_xmp_attach_export().

_exif_xmp_read_data()

static void _exif_xmp_read_data ( Exiv2::XmpData &  xmpData, const int32_t  imgid  )

static

Todo:

: Add tags to IPTC namespace as well

References dt_history_hash_values_t::auto_apply, dt_history_hash_values_t::auto_apply_len, dt_history_hash_values_t::basic, dt_history_hash_values_t::basic_len, dt_history_hash_values_t::current, dt_history_hash_values_t::current_len, darktable, darktable_t::db, dt_database_get(), dt_datetime_gtimespan_to_exif(), DT_DATETIME_LENGTH, DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_PREPARE_V2, dt_exif_xmp_encode(), dt_history_hash_read(), DT_IMAGE_AUTO_PRESETS_APPLIED, dt_image_get_xmp_rating_from_flags(), DT_IOP_ORDER_CUSTOM, dt_ioppr_get_iop_order_list(), dt_ioppr_get_iop_order_version(), dt_ioppr_has_multiple_instances(), dt_ioppr_serialize_text_iop_order_list(), dt_set_xmp_dt_history(), dt_set_xmp_dt_metadata(), dt_set_xmp_exif_geotag(), dt_tag_get_hierarchical(), dt_tag_get_list(), DT_XMP_EXIF_VERSION, FALSE, set_xmp_timestamps(), and TRUE.

Referenced by dt_exif_xmp_read_string(), and dt_exif_xmp_write().

_exif_xmp_read_data_export()

static void _exif_xmp_read_data_export ( Exiv2::XmpData &  xmpData, const int32_t  imgid, dt_export_metadata_t *  metadata  )

static

References darktable, darktable_t::db, dt_database_get(), dt_datetime_gtimespan_to_exif(), DT_DATETIME_LENGTH, DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_PREPARE_V2, DT_IMAGE_AUTO_PRESETS_APPLIED, dt_image_get_xmp_rating_from_flags(), DT_IOP_ORDER_CUSTOM, dt_ioppr_get_iop_order_list(), dt_ioppr_get_iop_order_version(), dt_ioppr_has_multiple_instances(), dt_ioppr_serialize_text_iop_order_list(), DT_META_DT_HISTORY, DT_META_EXIF, DT_META_GEOTAG, DT_META_HIERARCHICAL_TAG, DT_META_METADATA, DT_META_TAG, dt_remove_xmp_exif_geotag(), dt_set_xmp_dt_history(), dt_set_xmp_dt_metadata(), dt_set_xmp_exif_geotag(), dt_tag_get_hierarchical_export(), dt_tag_get_list_export(), DT_XMP_EXIF_VERSION, dt_export_metadata_t::flags, and TRUE.

Referenced by dt_exif_xmp_attach_export().

_find_datetime_taken()

static void _find_datetime_taken ( Exiv2::ExifData &  exifData, Exiv2::ExifData::const_iterator  pos, char *  exif_datetime_taken  )

static

References dt_datetime_add_subsec_to_exif(), DT_DATETIME_EXIF_LENGTH, DT_DATETIME_LENGTH, dt_strlcpy_to_utf8(), and FIND_EXIF_TAG.

Referenced by _exif_decode_exif_data(), and dt_exif_get_datetime_taken().

_find_exif_maker()

static void _find_exif_maker ( Exiv2::ExifData &  exifData, Exiv2::ExifData::const_iterator  pos, char *  maker, const size_t  m_size  )

static

References dt_strlcpy_to_utf8(), FIND_EXIF_TAG, and maker.

Referenced by _exif_decode_exif_data().

_find_exif_model()

static void _find_exif_model ( Exiv2::ExifData &  exifData, Exiv2::ExifData::const_iterator  pos, char *  model, const size_t  m_size  )

static

References dt_strlcpy_to_utf8(), FIND_EXIF_TAG, and model.

Referenced by _exif_decode_exif_data().

_get_exiv2_type()

static const char * _get_exiv2_type ( const int  type )

static

References type.

Referenced by _get_xmp_tags(), and dt_exif_set_exiv2_taglist().

_get_max_multi_priority()

int _get_max_multi_priority	(	GList *	history,
		const char *	operation
	)

References MAX, history_entry_t::multi_priority, and history_entry_t::operation.

_get_xmp_tags()

static void _get_xmp_tags ( const char *  prefix, GList **  taglist  )

static

References _get_exiv2_type(), and dt_util_dstrcat().

Referenced by dt_exif_set_exiv2_taglist().

_illu_to_temp()

static int _illu_to_temp ( dt_dng_illuminant_t  illu )

static

References DT_LS_CloudyWeather, DT_LS_CoolWhiteFluorescent, DT_LS_D50, DT_LS_D55, DT_LS_D65, DT_LS_D75, DT_LS_Daylight, DT_LS_DaylightFluorescent, DT_LS_DayWhiteFluorescent, DT_LS_FineWeather, DT_LS_Flash, DT_LS_Fluorescent, DT_LS_ISOStudioTungsten, DT_LS_Shade, DT_LS_StandardLightA, DT_LS_StandardLightB, DT_LS_StandardLightC, DT_LS_Tungsten, DT_LS_WarmWhiteFluorescent, and DT_LS_WhiteFluorescent.

Referenced by _exif_decode_exif_data().

_image_altered_deprecated()

static gboolean _image_altered_deprecated ( const int32_t  imgid )

static

References darktable, darktable_t::db, dt_database_get(), DT_DEBUG_SQLITE3_BIND_INT, and DT_DEBUG_SQLITE3_PREPARE_V2.

Referenced by dt_exif_xmp_read().

_remove_xmp_keys()

static void _remove_xmp_keys ( Exiv2::XmpData &  xmpData, const char *  key  )

static

References key.

Referenced by dt_exif_xmp_attach_export().

add_mask_entries_to_db()

static void add_mask_entries_to_db ( int32_t  imgid, GHashTable *  mask_entries, int  mask_id  )

static

References add_mask_entries_to_db(), add_mask_entry_to_db(), DT_MASKS_GROUP, mask_id, mask_entry_t::mask_nb, mask_entry_t::mask_points, mask_entry_t::mask_points_len, and mask_entry_t::mask_type.

Referenced by add_mask_entries_to_db(), and dt_exif_xmp_read().

add_mask_entry_to_db()

static void add_mask_entry_to_db ( int32_t  imgid, mask_entry_t *  entry  )

static

References mask_entry_t::already_added, darktable, darktable_t::db, dt_database_get(), DT_DEBUG_SQLITE3_BIND_BLOB, DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_BIND_TEXT, DT_DEBUG_SQLITE3_PREPARE_V2, mask_entry_t::mask_id, mask_entry_t::mask_name, mask_entry_t::mask_nb, mask_entry_t::mask_num, mask_entry_t::mask_points, mask_entry_t::mask_points_len, mask_entry_t::mask_src, mask_entry_t::mask_src_len, mask_entry_t::mask_type, mask_entry_t::mask_version, TRUE, and mask_entry_t::version.

Referenced by add_mask_entries_to_db(), add_non_clone_mask_entries_to_db(), and dt_exif_xmp_read().

add_non_clone_mask_entries_to_db()

static void add_non_clone_mask_entries_to_db ( gpointer  key, gpointer  value, gpointer  user_data  )

static

References add_mask_entry_to_db(), DT_MASKS_CLONE, DT_MASKS_NON_CLONE, and mask_entry_t::mask_type.

Referenced by dt_exif_xmp_read().

dt_exif_cleanup()

void dt_exif_cleanup

(

)

Referenced by dt_cleanup().

dt_exif_get_color_space()

dt_colorspaces_color_profile_type_t dt_exif_get_color_space	(	const uint8_t *	data,
		size_t	size
	)

look for color space hints in data and tell the caller if it's sRGB, AdobeRGB or something else. used for mipmaps

References DT_COLORSPACE_ADOBERGB, DT_COLORSPACE_DISPLAY, DT_COLORSPACE_SRGB, and size.

Referenced by dt_imageio_jpeg_read_color_space().

dt_exif_get_datetime_taken()

void dt_exif_get_datetime_taken	(	const uint8_t *	data,
		size_t	size,
		char *	datetime_taken
	)

look for datetime_taken in data. used for gphoto downloads

References _find_datetime_taken(), read_metadata_threadsafe, and size.

dt_exif_get_exiv2_taglist()

const GList * dt_exif_get_exiv2_taglist

(

)

get the list of available tags from Exvi2 must not be freed

References dt_exif_set_exiv2_taglist(), and exiv2_taglist.

Referenced by dt_lib_export_metadata_configuration_dialog().

dt_exif_get_thumbnail()

int dt_exif_get_thumbnail	(	const char *	path,
		uint8_t **	buffer,
		size_t *	size,
		char **	mime_type,
		int *	width,
		int *	height,
		int	min_width
	)

Get the largest possible thumbnail from the image

References DT_DEBUG_LIGHTTABLE, dt_print(), height, MAX, read_metadata_threadsafe, size, WIDEN, and width.

Referenced by dt_imageio_large_thumbnail().

dt_exif_img_check_additional_tags()

void dt_exif_img_check_additional_tags	(	dt_image_t *	img,
		const char *	filename
	)

Reads exif tags that are not cached in the database

References _check_dng_opcodes(), _check_usercrop(), read_metadata_threadsafe, and WIDEN.

Referenced by dt_imageio_open_rawspeed().

dt_exif_init()

void dt_exif_init

(

)

thread safe init and cleanup.

References dt_exif_log_handler().

Referenced by dt_init().

dt_exif_log_handler()

static void dt_exif_log_handler ( int  log_level, const char *  message  )

static

References DT_DEBUG_CAMERA_SUPPORT, and dt_print().

Referenced by dt_exif_init().

dt_exif_read()

int dt_exif_read	(	dt_image_t *	img,
		const char *	path
	)

read the metadata of an image. XMP data trumps IPTC data trumps EXIF data

References _exif_decode_exif_data(), _exif_decode_iptc_data(), _exif_decode_xmp_data(), dt_datetime_unix_to_img(), dt_image_t::exif_inited, dt_image_t::height, read_metadata_threadsafe, WIDEN, and dt_image_t::width.

Referenced by _image_import_internal(), _import_copy_file(), _set_test_path(), dt_control_refresh_exif_run(), dt_imageio_open_j2k(), dt_imageio_open_jpeg(), dt_imageio_open_png(), dt_imageio_open_rawspeed(), dt_imageio_open_tiff(), and update_preview_cb().

dt_exif_read_blob()

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
	)

write exif to blob, return length in bytes. blob will be allocated by the function. sRGB should be true if sRGB colorspace is used as output.

Todo:

: find a nice place for the missing metadata (tags, publisher, colorlabels?). Additionally find out

References darktable, darktable_package_string, dt_conf_get_int(), DT_DATETIME_EXIF_LENGTH, dt_datetime_img_to_exif(), DT_DATETIME_LENGTH, dt_datetime_now_to_exif(), dt_image_cache_get(), dt_image_cache_read_release(), dt_metadata_get(), dt_remove_exif_geotag(), dt_remove_exif_keys(), dt_image_geoloc_t::elevation, dt_image_t::geoloc, darktable_t::image_cache, dt_image_geoloc_t::latitude, dt_image_geoloc_t::longitude, read_metadata_threadsafe, and WIDEN.

Referenced by dt_control_merge_hdr_job_run(), and dt_imageio_export_with_flags().

dt_exif_read_from_blob()

int dt_exif_read_from_blob	(	dt_image_t *	img,
		uint8_t *	blob,
		const int	size
	)

Todo:

: can this blob also contain xmp and iptc data?

References _exif_decode_exif_data(), dt_image_t::filename, and size.

Referenced by dt_imageio_open_exr().

dt_exif_read_iptc_tag()

static bool dt_exif_read_iptc_tag ( Exiv2::IptcData &  iptcData, Exiv2::IptcData::const_iterator *  pos, string  key  )

static

References key.

dt_exif_read_xmp_tag()

static bool dt_exif_read_xmp_tag ( Exiv2::XmpData &  xmpData, Exiv2::XmpData::iterator *  pos, string  key  )

static

References key.

dt_exif_set_exiv2_taglist()

void dt_exif_set_exiv2_taglist

(

)

set the list of available tags from Exvi2

References _get_exiv2_type(), _get_xmp_tags(), dt_util_dstrcat(), and exiv2_taglist.

Referenced by dt_exif_get_exiv2_taglist(), and dt_init().

dt_exif_write_blob()

int dt_exif_write_blob	(	uint8_t *	blob,
		uint32_t	size,
		const char *	path,
		const int	compressed
	)

write blob to file exif. merges with existing exif information.

References dt_remove_exif_keys(), key, read_metadata_threadsafe, size, and WIDEN.

Referenced by dt_imageio_write_dng(), write_image(), write_image(), write_image(), and write_image().

dt_exif_xmp_attach_export()

int dt_exif_xmp_attach_export	(	const int32_t	imgid,
		const char *	filename,
		void *	metadata
	)

write xmp packet inside an image.

Todo:

if an element of the list contains a ", " it is not correctly exported

References _exif_get_exiv2_tag_type(), _exif_read_exif_tag(), _exif_xmp_read_data_export(), _remove_xmp_keys(), dt_image_full_path(), dt_image_path_append_version(), DT_META_EXIF, DT_META_GEOTAG, dt_remove_exif_geotag(), dt_remove_exif_key(), dt_remove_iptc_key(), dt_remove_known_keys(), dt_remove_xmp_key(), dt_remove_xmp_keys(), dt_variables_expand(), dt_variables_params_destroy(), dt_variables_params_init(), dt_variables_set_tags_flags(), FALSE, key, m, PATH_MAX, read_metadata_threadsafe, TRUE, type, and WIDEN.

Referenced by dt_imageio_export_with_flags().

dt_exif_xmp_decode()

unsigned char * dt_exif_xmp_decode	(	const char *	input,
		const int	len,
		int *	output_len
	)

References factor, and TO_BINARY.

Referenced by add_preset(), dt_exif_xmp_read(), dt_presets_import_from_file(), dt_style_plugin_save(), init_presets(), read_history_v1(), read_history_v2(), read_masks(), and read_masks_v3().

dt_exif_xmp_encode()

char * dt_exif_xmp_encode	(	const unsigned char *	input,
		const int	len,
		int *	output_len
	)

encode / decode op params

References COMPRESS_THRESHOLD, dt_conf_get_string(), dt_exif_xmp_encode_internal(), FALSE, and TRUE.

Referenced by _exif_xmp_read_data(), _init_presets(), dt_preset_encode(), dt_set_xmp_dt_history(), and dt_style_encode().

dt_exif_xmp_encode_internal()

char * dt_exif_xmp_encode_internal	(	const unsigned char *	input,
		const int	len,
		int *	output_len,
		gboolean	do_compress
	)

References factor, and MIN.

Referenced by dt_exif_xmp_encode(), encode_colorchecker(), and encode_tonecurve().

dt_exif_xmp_read()

int dt_exif_xmp_read	(	dt_image_t *	img,
		const char *	filename,
		const int	history_only
	)

read xmp sidecar file.

Todo:

: make this configurable? or remove it altogether?

References _exif_decode_xmp_data(), _image_altered_deprecated(), add_mask_entries_to_db(), add_mask_entry_to_db(), add_non_clone_mask_entries_to_db(), dt_history_hash_values_t::auto_apply, dt_history_hash_values_t::auto_apply_len, dt_history_hash_values_t::basic, dt_history_hash_values_t::basic_len, history_entry_t::blendop_params, history_entry_t::blendop_params_len, history_entry_t::blendop_version, dt_history_hash_values_t::current, dt_history_hash_values_t::current_len, darktable, darktable_t::db, dt_database_get(), dt_database_release_transaction, dt_database_rollback_transaction(), dt_database_start_transaction, DT_DEBUG_SQLITE3_BIND_BLOB, DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_BIND_TEXT, DT_DEBUG_SQLITE3_PREPARE_V2, dt_exif_xmp_decode(), DT_HISTORY_HASH_BASIC, DT_HISTORY_HASH_CURRENT, dt_history_hash_write(), dt_history_hash_write_from_history(), DT_IMAGE_AUTO_PRESETS_APPLIED, DT_IMAGE_NO_LEGACY_PRESETS, DT_IOP_ORDER_LEGACY, DT_IOP_ORDER_V30, dt_ioppr_deserialize_text_iop_order_list(), dt_ioppr_get_iop_order_link(), dt_ioppr_get_iop_order_list_version(), dt_ioppr_write_iop_order_list(), dt_sort_iop_list_by_order_f(), history_entry_t::enabled, FALSE, dt_image_t::flags, free_history_entry(), free_mask_entry(), dt_image_t::id, dt_iop_order_entry_t::instance, history_entry_t::iop_order, dt_iop_order_entry_t::iop_order_f, dt_image_raw_parameters_t::legacy, dt_image_t::legacy_flip, MIN, history_entry_t::modversion, history_entry_t::multi_name, history_entry_t::multi_priority, history_entry_t::num, dt_iop_order_entry_t::o, history_entry_t::operation, dt_iop_order_entry_t::operation, history_entry_t::params, history_entry_t::params_len, read_history_v1(), read_history_v2(), read_masks(), read_masks_v3(), read_metadata_threadsafe, read_xmp_timestamps(), TRUE, dt_image_raw_parameters_t::user_flip, and WIDEN.

Referenced by _image_import_internal(), dt_history_load_and_apply(), dt_image_read_duplicates(), and main().

dt_exif_xmp_read_string()

char * dt_exif_xmp_read_string

(

const int32_t

imgid

)

get the xmp blob for imgid.

References _exif_xmp_read_data(), dt_image_full_path(), dt_image_path_append_version(), dt_remove_known_keys(), ERROR_CODE, FALSE, PATH_MAX, and WIDEN.

Referenced by write_image(), and write_image().

dt_exif_xmp_write()

int dt_exif_xmp_write	(	const int32_t	imgid,
		const char *	filename
	)

write xmp sidecar file.

References _exif_xmp_read_data(), dt_control_log(), dt_image_full_path(), dt_read_file(), dt_remove_known_keys(), ERROR_CODE, PATH_MAX, TRUE, and WIDEN.

Referenced by dt_control_write_sidecar_files_job_run(), dt_image_write_sidecar_file(), and write_image().

dt_remove_exif_geotag()

static void dt_remove_exif_geotag ( Exiv2::ExifData &  exifData )

static

References dt_remove_exif_keys().

Referenced by dt_exif_read_blob(), and dt_exif_xmp_attach_export().

dt_remove_exif_key()

static void dt_remove_exif_key ( Exiv2::ExifData &  exif, const char *  key  )

static

References key.

Referenced by dt_exif_xmp_attach_export().

dt_remove_exif_keys()

static void dt_remove_exif_keys ( Exiv2::ExifData &  exif, const char *  keys[], unsigned int  n_keys  )

static

Referenced by dt_exif_read_blob(), dt_exif_write_blob(), and dt_remove_exif_geotag().

dt_remove_iptc_key()

static void dt_remove_iptc_key ( Exiv2::IptcData &  iptc, const char *  key  )

static

References key.

Referenced by dt_exif_xmp_attach_export().

dt_remove_known_keys()

static void dt_remove_known_keys ( Exiv2::XmpData &  xmp )

static

References dt_xmp_keys, dt_xmp_keys_n, and key.

Referenced by dt_exif_xmp_attach_export(), dt_exif_xmp_read_string(), and dt_exif_xmp_write().

dt_remove_xmp_exif_geotag()

static void dt_remove_xmp_exif_geotag ( Exiv2::XmpData &  xmpData )

static

References dt_remove_xmp_keys().

Referenced by _exif_xmp_read_data_export(), and dt_set_xmp_exif_geotag().

dt_remove_xmp_key()

static void dt_remove_xmp_key ( Exiv2::XmpData &  xmp, const char *  key  )

static

References key.

Referenced by dt_exif_xmp_attach_export().

dt_remove_xmp_keys()

static void dt_remove_xmp_keys ( Exiv2::XmpData &  xmp, const char *  keys[], unsigned int  n_keys  )

static

Referenced by dt_exif_xmp_attach_export(), dt_remove_xmp_exif_geotag(), and set_xmp_timestamps().

dt_set_xmp_dt_history()

static void dt_set_xmp_dt_history ( Exiv2::XmpData &  xmpData, const int32_t  imgid, int  history_end  )

static

References darktable, darktable_t::db, dt_database_get(), DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_PREPARE_V2, dt_exif_xmp_encode(), key, mask_id, mask_name, and MIN.

Referenced by _exif_xmp_read_data(), and _exif_xmp_read_data_export().

dt_set_xmp_dt_metadata()

static void dt_set_xmp_dt_metadata ( Exiv2::XmpData &  xmpData, const int32_t  imgid, const gboolean  export_flag  )

static

References darktable, darktable_t::db, dt_conf_get_int(), dt_database_get(), DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_PREPARE_V2, DT_METADATA_FLAG_HIDDEN, DT_METADATA_FLAG_PRIVATE, dt_metadata_get_key(), dt_metadata_get_name(), dt_metadata_get_type(), DT_METADATA_TYPE_INTERNAL, dt_util_dstrcat(), flag, and name.

Referenced by _exif_xmp_read_data(), and _exif_xmp_read_data_export().

dt_set_xmp_exif_geotag()

static void dt_set_xmp_exif_geotag ( Exiv2::XmpData &  xmpData, double  longitude, double  latitude, double  altitude  )

static

References double(), and dt_remove_xmp_exif_geotag().

Referenced by _exif_xmp_read_data(), and _exif_xmp_read_data_export().

dt_strlcpy_to_utf8()

static void dt_strlcpy_to_utf8 ( char *  dest, size_t  dest_max, Exiv2::ExifData::const_iterator &  pos, Exiv2::ExifData &  exifData  )

static

Referenced by _exif_decode_exif_data(), _find_datetime_taken(), _find_exif_maker(), and _find_exif_model().

free_history_entry()

static void free_history_entry ( gpointer  data )

static

References history_entry_t::blendop_params, history_entry_t::multi_name, history_entry_t::operation, and history_entry_t::params.

Referenced by dt_exif_xmp_read(), and read_history_v2().

free_mask_entry()

void free_mask_entry

(

gpointer

data

)

References mask_entry_t::mask_name, mask_entry_t::mask_points, and mask_entry_t::mask_src.

Referenced by dt_exif_xmp_read(), read_masks(), and read_masks_v3().

print_history_entry()

static void print_history_entry ( history_entry_t *  entry )

static

References history_entry_t::blendop_params, history_entry_t::blendop_version, history_entry_t::enabled, history_entry_t::iop_order, history_entry_t::modversion, history_entry_t::multi_name, history_entry_t::multi_priority, history_entry_t::operation, and history_entry_t::params.

read_history_v1()

static GList * read_history_v1 ( const std::string &  xmpPacket, const char *  filename, const int  superold  )

static

References history_entry_t::blendop_params, history_entry_t::blendop_params_len, history_entry_t::blendop_version, dt_exif_xmp_decode(), history_entry_t::enabled, history_entry_t::iop_order, history_entry_t::modversion, history_entry_t::multi_name, history_entry_t::multi_priority, history_entry_t::operation, history_entry_t::params, and history_entry_t::params_len.

Referenced by dt_exif_xmp_read().

read_history_v2()

static GList * read_history_v2 ( Exiv2::XmpData &  xmpData, const char *  filename  )

static

Todo:

: support human readable params via introspection with something like this:

References history_entry_t::blendop_params, history_entry_t::blendop_params_len, history_entry_t::blendop_version, dt_exif_xmp_decode(), history_entry_t::enabled, free_history_entry(), history_entry_t::have_modversion, history_entry_t::have_operation, history_entry_t::have_params, history_entry_t::iop_order, key, history_entry_t::modversion, history_entry_t::multi_name, history_entry_t::multi_priority, history_entry_t::num, history_entry_t::operation, history_entry_t::params, history_entry_t::params_len, and TRUE.

Referenced by dt_exif_xmp_read().

read_masks()

static GHashTable * read_masks ( Exiv2::XmpData &  xmpData, const char *  filename, const int  version  )

static

Todo:

: turn that into something like Xmp.darktable.history!

References dt_exif_xmp_decode(), free_mask_entry(), mask_entry_t::mask_id, mask_id, mask_entry_t::mask_name, mask_name, mask_entry_t::mask_nb, mask_entry_t::mask_points, mask_entry_t::mask_points_len, mask_entry_t::mask_src, mask_entry_t::mask_src_len, mask_entry_t::mask_type, mask_entry_t::mask_version, and mask_entry_t::version.

Referenced by dt_exif_xmp_read().

read_masks_v3()

static GList * read_masks_v3 ( Exiv2::XmpData &  xmpData, const char *  filename, const int  version  )

static

Todo:

: support human readable params via introspection with something like this:

References dt_exif_xmp_decode(), free_mask_entry(), key, mask_entry_t::mask_id, mask_entry_t::mask_name, mask_entry_t::mask_nb, mask_entry_t::mask_num, mask_entry_t::mask_points, mask_entry_t::mask_points_len, mask_entry_t::mask_src, mask_entry_t::mask_src_len, mask_entry_t::mask_type, mask_entry_t::mask_version, and mask_entry_t::version.

Referenced by dt_exif_xmp_read().

read_xmp_timestamps()

void read_xmp_timestamps ( Exiv2::XmpData &  xmpData, dt_image_t *  img, const int  xmp_version  )

static

References _convert_unix_to_gtimespan(), dt_image_t::change_timestamp, dt_image_t::export_timestamp, and dt_image_t::print_timestamp.

Referenced by dt_exif_xmp_read().

set_xmp_timestamps()

static void set_xmp_timestamps ( Exiv2::XmpData &  xmpData, const int32_t  imgid  )

static

References darktable, darktable_t::db, dt_database_get(), DT_DEBUG_SQLITE3_BIND_INT, DT_DEBUG_SQLITE3_PREPARE_V2, and dt_remove_xmp_keys().

Referenced by _exif_xmp_read_data().

Variable Documentation

dt_xmp_keys

const char* dt_xmp_keys[]

Initial value:

= { "Xmp.dc.subject", "Xmp.lr.hierarchicalSubject", "Xmp.darktable.colorlabels", "Xmp.darktable.history",
        "Xmp.darktable.history_modversion", "Xmp.darktable.history_enabled", "Xmp.darktable.history_end",
        "Xmp.darktable.iop_order_version", "Xmp.darktable.iop_order_list",
        "Xmp.darktable.history_operation", "Xmp.darktable.history_params", "Xmp.darktable.blendop_params",
        "Xmp.darktable.blendop_version", "Xmp.darktable.multi_priority", "Xmp.darktable.multi_name",
        "Xmp.darktable.iop_order",
        "Xmp.darktable.xmp_version", "Xmp.darktable.raw_params", "Xmp.darktable.auto_presets_applied",
        "Xmp.darktable.mask_id", "Xmp.darktable.mask_type", "Xmp.darktable.mask_name",
        "Xmp.darktable.masks_history", "Xmp.darktable.mask_num", "Xmp.darktable.mask_points",
        "Xmp.darktable.mask_version", "Xmp.darktable.mask", "Xmp.darktable.mask_nb", "Xmp.darktable.mask_src",
        "Xmp.darktable.history_basic_hash", "Xmp.darktable.history_auto_hash", "Xmp.darktable.history_current_hash",
        "Xmp.darktable.import_timestamp", "Xmp.darktable.change_timestamp",
        "Xmp.darktable.export_timestamp", "Xmp.darktable.print_timestamp",
        "Xmp.acdsee.notes", "Xmp.darktable.version_name",
        "Xmp.dc.creator", "Xmp.dc.publisher", "Xmp.dc.title", "Xmp.dc.description", "Xmp.dc.rights",
        "Xmp.xmpMM.DerivedFrom" }

Referenced by dt_remove_known_keys().

dt_xmp_keys_n

const guint dt_xmp_keys_n = G_N_ELEMENTS(dt_xmp_keys)

static

Referenced by dt_remove_known_keys().

exiv2_taglist

GList* exiv2_taglist = NULL

static

Referenced by _exif_get_exiv2_tag_type(), dt_exif_get_exiv2_taglist(), and dt_exif_set_exiv2_taglist().