2 * Copyright (C) 2006 John Ellis
3 * Copyright (C) 2008 - 2016 The Geeqie Team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
31 /*** color support enabled ***/
43 #include "filecache.h"
46 #include "jpeg-parser.h"
47 #include "main-defines.h"
49 #include "ui-fileops.h"
50 #include "zonedetect.h"
53 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
55 if (!r || r->den == 0.0) return 0.0;
57 if (sign) return static_cast<gdouble>(static_cast<gint>(r->num)) / static_cast<gdouble>(static_cast<gint>(r->den));
58 return static_cast<gdouble>(r->num) / r->den;
61 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
66 r = exif_get_rational(exif, key, &sign);
67 return exif_rational_to_double(r, sign);
70 static GString *append_comma_text(GString *string, const gchar *text)
72 string = g_string_append(string, ", ");
73 string = g_string_append(string, text);
78 static gchar *remove_common_prefix(gchar *s, gchar *t)
82 if (!s || !t) return t;
84 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
88 if (s[i-1] == ' ' || !s[i])
97 static gdouble get_crop_factor(ExifData *exif)
99 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
100 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
101 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
110 if (xres == 0.0 || yres == 0.0) return 0.0;
112 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
113 if (res_unit < 1 || res_unit > 5) return 0.0;
115 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
116 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
118 xsize = w * res_unit_tbl[res_unit] / xres;
119 ysize = h * res_unit_tbl[res_unit] / yres;
121 ratio = xsize / ysize;
123 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
125 size = hypot(xsize, ysize);
127 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
129 return hypot(36, 24) / size;
132 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
134 gint str_len = strlen(str);
136 if (suffix_len < 0) suffix_len = strlen(suffix);
137 if (str_len < suffix_len) return FALSE;
139 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
140 str[str_len - suffix_len] = '\0';
145 static gchar *exif_build_formatted_Camera(ExifData *exif)
148 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
149 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
150 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
158 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
159 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
160 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
171 g_strstrip(software);
173 /* remove superfluous spaces (pentax K100D) */
174 for (i = 0, j = 0; software[i]; i++, j++)
176 if (software[i] == ' ' && software[i + 1] == ' ')
178 if (i != j) software[j] = software[i];
183 model2 = remove_common_prefix(make, model);
184 software2 = remove_common_prefix(model2, software);
186 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
187 (model2) ? model2 : "",
188 (software2 && (make || model2)) ? " (" : "",
189 (software2) ? software2 : "",
190 (software2 && (make || model2)) ? ")" : "");
198 static gchar *exif_build_formatted_DateTime(ExifData *exif)
200 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
201 gchar *subsec = nullptr;
206 GError *error = nullptr;
210 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
214 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
215 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
218 /* Convert the stuff into a tm struct */
219 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
220 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
222 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
225 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
228 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
234 text = g_strdup(tmp);
242 text = g_strconcat(tmp, ".", subsec, NULL);
249 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
251 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
252 gchar *subsec = nullptr;
257 GError *error = nullptr;
261 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
265 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
266 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
269 /* Convert the stuff into a tm struct */
270 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
271 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
273 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
276 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
279 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
285 text = g_strdup(tmp);
293 text = g_strconcat(tmp, ".", subsec, NULL);
300 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
304 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", nullptr);
305 if (r && r->num && r->den)
307 gdouble n = static_cast<gdouble>(r->den) / static_cast<gdouble>(r->num);
308 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
309 n > 1.0 ? n : 1.0 / n);
311 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", nullptr);
312 if (r && r->num && r->den)
314 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
316 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
317 if (n > 1.0 && static_cast<gint>(n) - (static_cast<gint>(n/10))*10 == 1) n--;
319 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
320 n > 1.0 ? floor(n) : 1.0 / n);
325 static gchar *exif_build_formatted_Aperture(ExifData *exif)
329 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
330 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
331 if (n == 0.0) return nullptr;
333 return g_strdup_printf("f/%.1f", n);
336 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
342 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
343 if (!r) return nullptr;
345 n = exif_rational_to_double(r, sign);
346 return g_strdup_printf("%+.1f", n);
349 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
353 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
354 if (n == 0.0) return nullptr;
355 return g_strdup_printf("%.0f mm", n);
358 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
364 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
366 return g_strdup_printf("%d mm", n);
369 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
370 if (f == 0.0) return nullptr;
372 c = get_crop_factor(exif);
373 if (c == 0.0) return nullptr;
375 return g_strdup_printf("%.0f mm", f * c);
378 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
382 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
383 /* old canon may set this instead */
384 if (!text) text = exif_get_data_as_text(exif, "Exif.CanonSi.ISOSpeed");
385 /* kodak may set this instead */
386 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
390 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
396 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
397 if (!r) return nullptr;
399 if (static_cast<glong>(r->num) == static_cast<glong>(0xffffffff)) return g_strdup(_("infinity"));
400 if (static_cast<glong>(r->num) == 0) return g_strdup(_("unknown"));
402 n = exif_rational_to_double(r, sign);
403 if (n == 0.0) return _("unknown");
404 return g_strdup_printf("%.3f m", n);
407 static gchar *exif_build_formatted_Flash(ExifData *exif)
409 /* grr, flash is a bitmask... */
414 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return nullptr;
416 /* Exif 2.1 only defines first 3 bits */
417 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
419 /* must be Exif 2.2 */
420 string = g_string_new("");
422 /* flash fired (bit 0) */
423 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
425 /* flash mode (bits 3, 4) */
427 if (v) string = append_comma_text(string, _("mode:"));
431 string = g_string_append(string, _("on"));
434 string = g_string_append(string, _("off"));
437 string = g_string_append(string, _("auto"));
441 /* return light (bits 1, 2) */
443 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
444 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
446 /* we ignore flash function (bit 5) */
448 /* red-eye (bit 6) */
449 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
451 return g_string_free(string, FALSE);
454 static gchar *exif_build_formatted_Resolution(ExifData *exif)
461 rx = exif_get_rational(exif, "Exif.Image.XResolution", nullptr);
462 ry = exif_get_rational(exif, "Exif.Image.YResolution", nullptr);
463 if (!rx || !ry) return nullptr;
465 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
466 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? static_cast<gdouble>(rx->num) / rx->den : 1.0,
467 ry->den ? static_cast<gdouble>(ry->num) / ry->den : 1.0,
468 _("dot"), (units) ? units : _("unknown"));
474 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
477 cmsUInt8Number profileID[17];
479 const gchar *name = "";
480 const gchar *source = "";
481 guchar *profile_data;
484 profile_data = exif_get_color_profile(exif, &profile_len);
488 gchar *interop_index;
490 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
491 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
492 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
497 source = "ColorSpace";
499 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
501 name = _("AdobeRGB");
502 source = (cs == 2) ? "ColorSpace" : "Iop";
505 g_free(interop_index);
509 source = _("embedded");
515 profile = cmsOpenProfileFromMem(profile_data, profile_len);
519 profileID[16] = '\0';
520 cmsGetHeaderProfileID(profile, profileID);
521 name = reinterpret_cast<gchar *>(profileID);
523 name = (gchar *) cmsTakeProductName(profile);
525 cmsCloseProfile(profile);
527 g_free(profile_data);
531 if (name[0] == 0 && source[0] == 0) return nullptr;
532 return g_strdup_printf("%s (%s)", name, source);
535 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
547 string = g_string_new("");
549 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
550 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
554 for (i = 0; i < exif_item_get_elements(item); i++)
556 value = exif_item_get_rational(item, nullptr, i);
557 if (value && value->num && value->den)
558 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
560 p1 = static_cast<gint>(p);
561 p2 = static_cast<gint>((p - p1)*60);
562 p3 = ((p - p1)*60 - p2)*60;
564 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
565 } // if (item && ref)
567 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
568 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
572 for (i = 0; i < exif_item_get_elements(item); i++)
574 value = exif_item_get_rational(item, nullptr, i);
575 if (value && value->num && value->den)
576 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
578 p1 = static_cast<gint>(p);
579 p2 = static_cast<gint>((p - p1)*60);
580 p3 = ((p - p1)*60 - p2)*60;
582 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
583 } // if (item && ref)
585 return g_string_free(string, FALSE);
586 } // static gchar *exif_build_forma...
588 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
595 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
596 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", nullptr);
598 if (!r || !item) return nullptr;
600 alt = exif_rational_to_double(r, 0);
601 exif_item_get_integer(item, &ref);
603 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
607 * @brief Extracts timezone data from a ZoneDetect search structure
608 * @param[in] results ZoneDetect search structure
609 * @param[out] timezone in the form "Europe/London"
610 * @param[out] countryname in the form "United Kingdom"
611 * @param[out] countryalpha2 in the form "GB"
613 * Refer to https://github.com/BertoldVdb/ZoneDetect
614 * for structure details
616 static void zd_tz(ZoneDetectResult *results, gchar **timezone, gchar **countryname, gchar **countryalpha2)
618 gchar *timezone_pre = nullptr;
619 gchar *timezone_id = nullptr;
620 unsigned int index = 0;
622 while(results[index].lookupResult != ZD_LOOKUP_END)
624 if(results[index].data)
626 for(unsigned int i=0; i<results[index].numFields; i++)
628 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
630 timezone_pre = g_strdup(results[index].data[i]);
632 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
634 timezone_id = g_strdup(results[index].data[i]);
636 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryName"))
638 *countryname = g_strdup(results[index].data[i]);
640 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryAlpha2"))
642 *countryalpha2 = g_strdup(results[index].data[i]);
649 *timezone = g_strconcat(timezone_pre, timezone_id, NULL);
650 g_free(timezone_pre);
654 void ZoneDetect_onError(int errZD, int errNative)
656 log_printf("Error: ZoneDetect %s (0x%08X)\n", ZDGetErrorString(errZD), (unsigned)errNative);
660 * @brief Gets timezone data from an exif structure
662 * @returns TRUE if timezone data found AND GPS date and time found
663 * @param[out] exif_date_time exif date/time in the form 2018:11:30:17:05:04
664 * @param[out] timezone in the form "Europe/London"
665 * @param[out] countryname in the form "United Kingdom"
666 * @param[out] countryalpha2 in the form "GB"
670 static gboolean exif_build_tz_data(ExifData *exif, gchar **exif_date_time, gchar **timezone, gchar **countryname, gchar **countryalpha2)
674 gchar *text_latitude;
675 gchar *text_longitude;
676 gchar *text_latitude_ref;
677 gchar *text_longitude_ref;
684 gchar *timezone_path;
686 ZoneDetectResult *results;
687 gboolean ret = FALSE;
689 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
690 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
691 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
692 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
693 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
694 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
696 if (text_latitude && text_longitude && text_latitude_ref && text_longitude_ref)
698 lat_deg = strtok(text_latitude, "deg'");
699 lat_min = strtok(nullptr, "deg'");
700 if (!lat_deg || !lat_min)
704 latitude = atof(lat_deg) + atof(lat_min) / 60;
705 if (!g_strcmp0(text_latitude_ref, "South"))
707 latitude = -latitude;
709 lon_deg = strtok(text_longitude, "deg'");
710 lon_min = strtok(nullptr, "deg'");
711 if (!lon_deg || !lon_min)
715 longitude = atof(lon_deg) + atof(lon_min) / 60;
716 if (!g_strcmp0(text_longitude_ref, "West"))
718 longitude = -longitude;
721 timezone_path = g_build_filename(get_rc_dir(), TIMEZONE_DATABASE_FILE, NULL);
722 if (g_file_test(timezone_path, G_FILE_TEST_EXISTS))
724 ZDSetErrorHandler(ZoneDetect_onError);
725 cd = ZDOpenDatabase(timezone_path);
728 results = ZDLookup(cd, latitude, longitude, nullptr);
731 zd_tz(results, timezone, countryname, countryalpha2);
737 log_printf("Error: Init of timezone database %s failed\n", timezone_path);
741 g_free(timezone_path);
744 if (ret && text_date && text_time)
746 *exif_date_time = g_strconcat(text_date, ":", text_time, NULL);
756 * @brief Creates local time from GPS lat/long
758 * @returns Localised time and date
760 * GPS lat/long is translated to timezone using ZoneDetect.
761 * GPS UTC is converted to Unix time stamp (seconds since 1970).
762 * The TZ environment variable is set to the relevant timezone
763 * and the Unix timestamp converted to local time using locale.
764 * If the conversion fails, unformatted UTC is returned.
766 static gchar *exif_build_formatted_localtime(ExifData *exif)
771 GError *error = nullptr;
772 gchar *time_zone_image;
773 gchar *time_zone_org;
777 gchar *exif_date_time = nullptr;
778 gchar *timezone = nullptr;
779 gchar *countryname = nullptr;
780 gchar *countryalpha2 = nullptr;
782 if (exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2))
784 time_zone_image = g_strconcat("TZ=", timezone, NULL);
785 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
786 setenv("TZ", "UTC", TRUE);
788 memset(&tm_utc, 0, sizeof(tm_utc));
789 if (exif_date_time && strptime(exif_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
791 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
792 putenv(time_zone_image); // Switch to destination time zone
794 tm_local = localtime(&stamp);
796 /* Convert to localtime using locale */
797 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
800 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
803 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
808 g_free(exif_date_time);
809 exif_date_time = tmp;
813 putenv(time_zone_org);
815 g_free(time_zone_image);
816 g_free(time_zone_org);
821 g_free(countryalpha2);
823 return exif_date_time;
827 * @brief Gets timezone from GPS lat/long
829 * @returns Timezone string in the form "Europe/London"
833 static gchar *exif_build_formatted_timezone(ExifData *exif)
835 gchar *exif_date_time = nullptr;
836 gchar *timezone = nullptr;
837 gchar *countryname = nullptr;
838 gchar *countryalpha2 = nullptr;
840 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
842 g_free(exif_date_time);
844 g_free(countryalpha2);
850 * @brief Gets countryname from GPS lat/long
852 * @returns Countryname string
856 static gchar *exif_build_formatted_countryname(ExifData *exif)
858 gchar *exif_date_time = nullptr;
859 gchar *timezone = nullptr;
860 gchar *countryname = nullptr;
861 gchar *countryalpha2 = nullptr;
863 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
865 g_free(exif_date_time);
867 g_free(countryalpha2);
873 * @brief Gets two-letter country code from GPS lat/long
875 * @returns Countryalpha2 string
879 static gchar *exif_build_formatted_countrycode(ExifData *exif)
881 gchar *exif_date_time = nullptr;
882 gchar *timezone = nullptr;
883 gchar *countryname = nullptr;
884 gchar *countryalpha2 = nullptr;
886 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
888 g_free(exif_date_time);
892 return countryalpha2;
895 static gchar *exif_build_formatted_star_rating(ExifData *exif)
899 exif_get_integer(exif, "Xmp.xmp.Rating", &n);
901 return convert_rating_to_stars(n);
904 /* List of custom formatted pseudo-exif tags */
905 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
907 ExifFormattedText ExifFormattedList[] = {
908 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
909 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
910 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
911 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
912 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
913 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
914 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
915 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
916 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
917 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
918 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
919 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
920 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
921 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
922 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
923 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
924 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
925 EXIF_FORMATTED_TAG(countryname, N_("Country name")),
926 EXIF_FORMATTED_TAG(countrycode, N_("Country code")),
927 EXIF_FORMATTED_TAG(star_rating, N_("Star rating")),
928 {"file.size", N_("File size"), nullptr},
929 {"file.date", N_("File date"), nullptr},
930 {"file.mode", N_("File mode"), nullptr},
931 {"file.ctime", N_("File ctime"), nullptr},
932 {"file.owner", N_("File owner"), nullptr},
933 {"file.group", N_("File group"), nullptr},
934 {"file.link", N_("File link"), nullptr},
935 {"file.class", N_("File class"), nullptr},
936 {"file.page_no", N_("Page no."), nullptr},
937 {"lua.lensID", N_("Lens"), nullptr},
938 { nullptr, nullptr, nullptr }
941 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
943 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
947 if (key_valid) *key_valid = TRUE;
949 key += EXIF_FORMATTED_LEN;
950 for (i = 0; ExifFormattedList[i].key; i++)
951 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
952 return ExifFormattedList[i].build_func(exif);
955 if (key_valid) *key_valid = FALSE;
959 gchar *exif_get_description_by_key(const gchar *key)
961 if (!key) return nullptr;
963 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 || strncmp(key, "file.", 5) == 0 || strncmp(key, "lua.", 4) == 0)
967 for (i = 0; ExifFormattedList[i].key; i++)
968 if (strcmp(key, ExifFormattedList[i].key) == 0)
969 return g_strdup(_(ExifFormattedList[i].description));
972 return exif_get_tag_description_by_key(key);
975 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
979 item = exif_get_item(exif, key);
980 return exif_item_get_integer(item, value);
983 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
987 item = exif_get_item(exif, key);
988 return exif_item_get_rational(item, sign, 0);
991 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
997 if (!key) return nullptr;
999 text = exif_get_formatted_by_key(exif, key, &key_valid);
1000 if (key_valid) return text;
1002 item = exif_get_item(exif, key);
1003 if (item) return exif_item_get_data_as_text(item, exif);
1009 static FileCacheData *exif_cache;
1011 void exif_release_cb(FileData *fd)
1013 exif_free(fd->exif);
1017 void exif_init_cache()
1019 g_assert(!exif_cache);
1020 exif_cache = file_cache_new(exif_release_cb, 4);
1023 ExifData *exif_read_fd(FileData *fd)
1025 gchar *sidecar_path;
1027 if (!exif_cache) exif_init_cache();
1029 if (!fd) return nullptr;
1031 if (file_cache_get(exif_cache, fd)) return fd->exif;
1032 g_assert(fd->exif == nullptr);
1034 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
1035 * not writable directly, thus it should contain the most up-to-date version */
1036 sidecar_path = nullptr;
1039 /* we are not able to handle XMP sidecars without exiv2 */
1040 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
1042 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
1045 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
1047 g_free(sidecar_path);
1048 file_cache_put(exif_cache, fd, 1);
1053 void exif_free_fd(FileData *fd, ExifData *exif)
1056 g_assert(fd->exif == exif);
1059 /* embedded icc in jpeg */
1061 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1063 guint seg_offset = 0;
1064 guint seg_length = 0;
1065 guint chunk_offset[255];
1066 guint chunk_length[255];
1067 guint chunk_count = 0;
1069 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1070 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1071 NN = segment number for data
1072 TT = total number of ICC segments (TT in each ICC segment should match)
1075 while (jpeg_segment_find(data + seg_offset + seg_length,
1076 size - seg_offset - seg_length,
1078 "ICC_PROFILE\x00", 12,
1079 &seg_offset, &seg_length))
1084 if (seg_length < 14) return FALSE;
1086 chunk_num = data[seg_offset + 12];
1087 chunk_tot = data[seg_offset + 13];
1089 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1091 if (chunk_count == 0)
1095 chunk_count = static_cast<guint>(chunk_tot);
1096 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1097 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1100 if (chunk_tot != chunk_count ||
1101 chunk_num > chunk_count) return FALSE;
1104 chunk_offset[chunk_num] = seg_offset + 14;
1105 chunk_length[chunk_num] = seg_length - 14;
1108 if (chunk_count > 0)
1111 guint cp_length = 0;
1114 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1115 cp_data = static_cast<guchar *>(g_malloc(cp_length));
1117 for (i = 0; i < chunk_count; i++)
1119 if (chunk_offset[i] == 0)
1121 /* error, we never saw this chunk */
1125 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1127 DEBUG_1("Found embedded icc profile in jpeg");
1128 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1137 *-------------------------------------------------------------------
1139 * it is here because it shares tag neming infrastructure with exif
1140 * we should probably not invest too much effort into this because
1141 * new exiv2 will support the same functionality
1142 * https://dev.exiv2.org/issues/505
1143 *-------------------------------------------------------------------
1146 static gchar *mode_number(mode_t m)
1154 mb = mu = mg = mo = 0;
1156 if (m & S_ISUID) mb |= 4;
1157 if (m & S_ISGID) mb |= 2;
1158 if (m & S_ISVTX) mb |= 1;
1160 if (m & S_IRUSR) mu |= 4;
1161 if (m & S_IWUSR) mu |= 2;
1162 if (m & S_IXUSR) mu |= 1;
1164 if (m & S_IRGRP) mg |= 4;
1165 if (m & S_IWGRP) mg |= 2;
1166 if (m & S_IXGRP) mg |= 1;
1168 if (m & S_IROTH) mo |= 4;
1169 if (m & S_IWOTH) mo |= 2;
1170 if (m & S_IXOTH) mo |= 1;
1172 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1173 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1174 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1175 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1176 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1177 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1178 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1179 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1180 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1183 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1186 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat)
1190 if (strcmp(key, "file.size") == 0)
1192 return g_strdup_printf("%ld", static_cast<long>(fd->size));
1194 if (strcmp(key, "file.date") == 0)
1196 return g_strdup(text_from_time(fd->date));
1198 if (strcmp(key, "file.mode") == 0)
1200 return mode_number(fd->mode);
1202 if (strcmp(key, "file.ctime") == 0)
1204 return g_strdup(text_from_time(fd->cdate));
1206 if (strcmp(key, "file.class") == 0)
1208 return g_strdup(format_class_list[fd->format_class]);
1210 if (strcmp(key, "file.owner") == 0)
1212 return g_strdup(fd->owner);
1214 if (strcmp(key, "file.group") == 0)
1216 return g_strdup(fd->group);
1218 if (strcmp(key, "file.link") == 0)
1220 return g_strdup(fd->sym_link);
1222 if (strcmp(key, "file.page_no") == 0)
1224 if (fd->page_total > 1)
1226 page_n_of_m = g_strdup_printf("[%d/%d]", fd->page_num + 1, fd->page_total);
1232 return g_strdup("");
1236 gchar *metadata_lua_info(FileData *fd, const gchar *key, MetadataFormat)
1239 gchar *script_name_utf8;
1244 script_name_utf8 = g_strdup(key + 4);
1245 script_name = path_from_utf8(script_name_utf8);
1247 raw_data = lua_callvalue(fd, script_name, nullptr);
1248 valid_data = g_utf8_make_valid(raw_data, -1);
1249 data = g_utf8_substring(valid_data, 0, 150);
1251 g_free(script_name);
1252 g_free(script_name_utf8);
1259 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */