4 * Copyright (C) 2008 - 2012 The Geeqie Team
7 * Support for Exif file format, originally written by Eric Swalens.
8 * Modified by Quy Tonthat
9 * Reimplemented with generic data storage by John Ellis
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #define EXIF_FORMATTED() "formatted."
31 #define EXIF_FORMATTED_LEN (sizeof(EXIF_FORMATTED()) - 1)
34 *-----------------------------------------------------------------------------
36 *-----------------------------------------------------------------------------
39 #define EXIF_FORMAT_COUNT 13
42 EXIF_FORMAT_UNKNOWN = 0,
43 EXIF_FORMAT_BYTE_UNSIGNED = 1,
44 EXIF_FORMAT_STRING = 2,
45 EXIF_FORMAT_SHORT_UNSIGNED = 3,
46 EXIF_FORMAT_LONG_UNSIGNED = 4,
47 EXIF_FORMAT_RATIONAL_UNSIGNED = 5,
49 EXIF_FORMAT_UNDEFINED = 7,
50 EXIF_FORMAT_SHORT = 8,
52 EXIF_FORMAT_RATIONAL = 10,
53 EXIF_FORMAT_FLOAT = 11,
54 EXIF_FORMAT_DOUBLE = 12
59 *-----------------------------------------------------------------------------
61 *-----------------------------------------------------------------------------
64 typedef struct _ExifItem ExifItem;
66 typedef struct _ExifRational ExifRational;
74 /* enums useful for image manipulation */
77 EXIF_ORIENTATION_UNKNOWN = 0,
78 EXIF_ORIENTATION_TOP_LEFT = 1,
79 EXIF_ORIENTATION_TOP_RIGHT = 2,
80 EXIF_ORIENTATION_BOTTOM_RIGHT = 3,
81 EXIF_ORIENTATION_BOTTOM_LEFT = 4,
82 EXIF_ORIENTATION_LEFT_TOP = 5,
83 EXIF_ORIENTATION_RIGHT_TOP = 6,
84 EXIF_ORIENTATION_RIGHT_BOTTOM = 7,
85 EXIF_ORIENTATION_LEFT_BOTTOM = 8
86 } ExifOrientationType;
89 EXIF_UNIT_UNKNOWN = 0,
92 EXIF_UNIT_CENTIMETER = 3
95 typedef struct _ExifFormattedText ExifFormattedText;
96 struct _ExifFormattedText
99 const gchar *description;
100 gchar *(*build_func)(ExifData *exif);
104 *-----------------------------------------------------------------------------
106 *-----------------------------------------------------------------------------
109 void exif_init(void);
111 ExifData *exif_read(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp);
113 ExifData *exif_read_fd(FileData *fd);
114 void exif_free_fd(FileData *fd, ExifData *exif);
116 /* exif_read returns processed data (merged from image and sidecar, etc.)
117 this function gives access to the original data from the image.
118 original data are part of the processed data and should not be freed separately */
119 ExifData *exif_get_original(ExifData *processed);
122 gboolean exif_write(ExifData *exif);
123 gboolean exif_write_sidecar(ExifData *exif, gchar *path);
125 void exif_free(ExifData *exif);
127 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key);
128 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value);
129 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign);
131 ExifItem *exif_get_item(ExifData *exif, const gchar *key);
132 ExifItem *exif_get_first_item(ExifData *exif);
133 ExifItem *exif_get_next_item(ExifData *exif);
136 gchar *exif_item_get_tag_name(ExifItem *item);
137 guint exif_item_get_tag_id(ExifItem *item);
138 guint exif_item_get_elements(ExifItem *item);
139 gchar *exif_item_get_data(ExifItem *item, guint *data_len);
140 gchar *exif_item_get_description(ExifItem *item);
141 guint exif_item_get_format_id(ExifItem *item);
142 const gchar *exif_item_get_format_name(ExifItem *item, gboolean brief);
143 gchar *exif_item_get_data_as_text(ExifItem *item);
144 gint exif_item_get_integer(ExifItem *item, gint *value);
145 ExifRational *exif_item_get_rational(ExifItem *item, gint *sign, guint n);
147 gchar *exif_item_get_string(ExifItem *item, gint idx);
149 gchar *exif_get_description_by_key(const gchar *key);
150 gchar *exif_get_tag_description_by_key(const gchar *key);
152 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid);
154 gint exif_update_metadata(ExifData *exif, const gchar *key, const GList *values);
155 GList *exif_get_metadata(ExifData *exif, const gchar *key, MetadataFormat format);
157 guchar *exif_get_color_profile(ExifData *exif, guint *data_len);
159 /* jpeg embedded icc support */
161 void exif_add_jpeg_color_profile(ExifData *exif, guchar *cp_data, guint cp_length);
164 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size);
167 guchar *exif_get_preview(ExifData *exif, guint *data_len, gint requested_width, gint requested_height);
168 void exif_free_preview(guchar *buf);
170 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format);
173 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */