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.
36 /*** color support enabled ***/
47 #include "filecache.h"
51 #include "jpeg-parser.h"
52 #include "main-defines.h"
55 #include "ui-fileops.h"
56 #include "zonedetect.h"
64 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
66 if (!r || r->den == 0.0) return 0.0;
68 if (sign) return static_cast<gdouble>(static_cast<gint>(r->num)) / static_cast<gdouble>(static_cast<gint>(r->den));
69 return static_cast<gdouble>(r->num) / r->den;
72 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
77 r = exif_get_rational(exif, key, &sign);
78 return exif_rational_to_double(r, sign);
81 static GString *append_comma_text(GString *string, const gchar *text)
83 string = g_string_append(string, ", ");
84 string = g_string_append(string, text);
89 static gchar *remove_common_prefix(gchar *s, gchar *t)
93 if (!s || !t) return t;
95 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
99 if (s[i-1] == ' ' || !s[i])
108 static gdouble get_crop_factor(ExifData *exif)
110 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
111 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
112 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
121 if (xres == 0.0 || yres == 0.0) return 0.0;
123 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
124 if (res_unit < 1 || res_unit > 5) return 0.0;
126 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
127 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
129 xsize = w * res_unit_tbl[res_unit] / xres;
130 ysize = h * res_unit_tbl[res_unit] / yres;
132 ratio = xsize / ysize;
134 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
136 size = hypot(xsize, ysize);
138 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
140 return hypot(36, 24) / size;
143 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
145 gint str_len = strlen(str);
147 if (suffix_len < 0) suffix_len = strlen(suffix);
148 if (str_len < suffix_len) return FALSE;
150 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
151 str[str_len - suffix_len] = '\0';
156 static gchar *exif_build_formatted_Camera(ExifData *exif)
159 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
160 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
161 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
169 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
170 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
171 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
182 g_strstrip(software);
184 /* remove superfluous spaces (pentax K100D) */
185 for (i = 0, j = 0; software[i]; i++, j++)
187 if (software[i] == ' ' && software[i + 1] == ' ')
189 if (i != j) software[j] = software[i];
194 model2 = remove_common_prefix(make, model);
195 software2 = remove_common_prefix(model2, software);
197 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
198 (model2) ? model2 : "",
199 (software2 && (make || model2)) ? " (" : "",
200 (software2) ? software2 : "",
201 (software2 && (make || model2)) ? ")" : "");
209 static gchar *exif_build_formatted_DateTime(ExifData *exif)
211 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
212 gchar *subsec = nullptr;
217 GError *error = nullptr;
221 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
225 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
226 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
229 /* Convert the stuff into a tm struct */
230 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
231 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
233 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
236 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
239 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
245 text = g_strdup(tmp);
253 text = g_strconcat(tmp, ".", subsec, NULL);
260 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
262 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
263 gchar *subsec = nullptr;
268 GError *error = nullptr;
272 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
276 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
277 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
280 /* Convert the stuff into a tm struct */
281 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
282 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
284 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
287 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
290 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
296 text = g_strdup(tmp);
304 text = g_strconcat(tmp, ".", subsec, NULL);
311 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
315 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", nullptr);
316 if (r && r->num && r->den)
318 gdouble n = static_cast<gdouble>(r->den) / static_cast<gdouble>(r->num);
319 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
320 n > 1.0 ? n : 1.0 / n);
322 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", nullptr);
323 if (r && r->num && r->den)
325 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
327 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
328 if (n > 1.0 && static_cast<gint>(n) - (static_cast<gint>(n/10))*10 == 1) n--;
330 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
331 n > 1.0 ? floor(n) : 1.0 / n);
336 static gchar *exif_build_formatted_Aperture(ExifData *exif)
340 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
341 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
342 if (n == 0.0) return nullptr;
344 return g_strdup_printf("f/%.1f", n);
347 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
353 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
354 if (!r) return nullptr;
356 n = exif_rational_to_double(r, sign);
357 return g_strdup_printf("%+.1f", n);
360 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
364 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
365 if (n == 0.0) return nullptr;
366 return g_strdup_printf("%.0f mm", n);
369 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
375 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
377 return g_strdup_printf("%d mm", n);
380 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
381 if (f == 0.0) return nullptr;
383 c = get_crop_factor(exif);
384 if (c == 0.0) return nullptr;
386 return g_strdup_printf("%.0f mm", f * c);
389 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
393 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
394 /* old canon may set this instead */
395 if (!text) text = exif_get_data_as_text(exif, "Exif.CanonSi.ISOSpeed");
396 /* kodak may set this instead */
397 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
401 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
407 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
408 if (!r) return nullptr;
410 if (static_cast<glong>(r->num) == static_cast<glong>(0xffffffff)) return g_strdup(_("infinity"));
411 if (static_cast<glong>(r->num) == 0) return g_strdup(_("unknown"));
413 n = exif_rational_to_double(r, sign);
414 if (n == 0.0) return _("unknown");
415 return g_strdup_printf("%.3f m", n);
418 static gchar *exif_build_formatted_Flash(ExifData *exif)
420 /* grr, flash is a bitmask... */
425 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return nullptr;
427 /* Exif 2.1 only defines first 3 bits */
428 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
430 /* must be Exif 2.2 */
431 string = g_string_new("");
433 /* flash fired (bit 0) */
434 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
436 /* flash mode (bits 3, 4) */
438 if (v) string = append_comma_text(string, _("mode:"));
442 string = g_string_append(string, _("on"));
445 string = g_string_append(string, _("off"));
448 string = g_string_append(string, _("auto"));
452 /* return light (bits 1, 2) */
454 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
455 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
457 /* we ignore flash function (bit 5) */
459 /* red-eye (bit 6) */
460 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
462 return g_string_free(string, FALSE);
465 static gchar *exif_build_formatted_Resolution(ExifData *exif)
472 rx = exif_get_rational(exif, "Exif.Image.XResolution", nullptr);
473 ry = exif_get_rational(exif, "Exif.Image.YResolution", nullptr);
474 if (!rx || !ry) return nullptr;
476 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
477 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? static_cast<gdouble>(rx->num) / rx->den : 1.0,
478 ry->den ? static_cast<gdouble>(ry->num) / ry->den : 1.0,
479 _("dot"), (units) ? units : _("unknown"));
485 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
488 cmsUInt8Number profileID[17];
490 const gchar *name = "";
491 const gchar *source = "";
492 guchar *profile_data;
495 profile_data = exif_get_color_profile(exif, &profile_len);
499 gchar *interop_index;
501 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
502 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
503 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
508 source = "ColorSpace";
510 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
512 name = _("AdobeRGB");
513 source = (cs == 2) ? "ColorSpace" : "Iop";
516 g_free(interop_index);
520 source = _("embedded");
526 profile = cmsOpenProfileFromMem(profile_data, profile_len);
530 profileID[16] = '\0';
531 cmsGetHeaderProfileID(profile, profileID);
532 name = reinterpret_cast<gchar *>(profileID);
534 name = (gchar *) cmsTakeProductName(profile);
536 cmsCloseProfile(profile);
538 g_free(profile_data);
542 if (name[0] == 0 && source[0] == 0) return nullptr;
543 return g_strdup_printf("%s (%s)", name, source);
546 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
558 string = g_string_new("");
560 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
561 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
565 for (i = 0; i < exif_item_get_elements(item); i++)
567 value = exif_item_get_rational(item, nullptr, i);
568 if (value && value->num && value->den)
569 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
571 p1 = static_cast<gint>(p);
572 p2 = static_cast<gint>((p - p1)*60);
573 p3 = ((p - p1)*60 - p2)*60;
575 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
576 } // if (item && ref)
578 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
579 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
583 for (i = 0; i < exif_item_get_elements(item); i++)
585 value = exif_item_get_rational(item, nullptr, i);
586 if (value && value->num && value->den)
587 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
589 p1 = static_cast<gint>(p);
590 p2 = static_cast<gint>((p - p1)*60);
591 p3 = ((p - p1)*60 - p2)*60;
593 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
594 } // if (item && ref)
596 return g_string_free(string, FALSE);
597 } // static gchar *exif_build_forma...
599 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
606 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
607 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", nullptr);
609 if (!r || !item) return nullptr;
611 alt = exif_rational_to_double(r, 0);
612 exif_item_get_integer(item, &ref);
614 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
618 * @brief Extracts timezone data from a ZoneDetect search structure
619 * @param[in] results ZoneDetect search structure
620 * @param[out] timezone in the form "Europe/London"
621 * @param[out] countryname in the form "United Kingdom"
622 * @param[out] countryalpha2 in the form "GB"
624 * Refer to https://github.com/BertoldVdb/ZoneDetect
625 * for structure details
627 static void zd_tz(ZoneDetectResult *results, gchar **timezone, gchar **countryname, gchar **countryalpha2)
629 gchar *timezone_pre = nullptr;
630 gchar *timezone_id = nullptr;
631 unsigned int index = 0;
633 while(results[index].lookupResult != ZD_LOOKUP_END)
635 if(results[index].data)
637 for(unsigned int i=0; i<results[index].numFields; i++)
639 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
641 timezone_pre = g_strdup(results[index].data[i]);
643 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
645 timezone_id = g_strdup(results[index].data[i]);
647 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryName"))
649 *countryname = g_strdup(results[index].data[i]);
651 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryAlpha2"))
653 *countryalpha2 = g_strdup(results[index].data[i]);
660 *timezone = g_strconcat(timezone_pre, timezone_id, NULL);
661 g_free(timezone_pre);
665 void ZoneDetect_onError(int errZD, int errNative)
667 log_printf("Error: ZoneDetect %s (0x%08X)\n", ZDGetErrorString(errZD), (unsigned)errNative);
671 * @brief Gets timezone data from an exif structure
673 * @returns TRUE if timezone data found AND GPS date and time found
674 * @param[out] exif_date_time exif date/time in the form 2018:11:30:17:05:04
675 * @param[out] timezone in the form "Europe/London"
676 * @param[out] countryname in the form "United Kingdom"
677 * @param[out] countryalpha2 in the form "GB"
681 static gboolean exif_build_tz_data(ExifData *exif, gchar **exif_date_time, gchar **timezone, gchar **countryname, gchar **countryalpha2)
685 gchar *text_latitude;
686 gchar *text_longitude;
687 gchar *text_latitude_ref;
688 gchar *text_longitude_ref;
695 gchar *timezone_path;
697 ZoneDetectResult *results;
698 gboolean ret = FALSE;
700 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
701 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
702 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
703 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
704 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
705 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
707 if (text_latitude && text_longitude && text_latitude_ref && text_longitude_ref)
709 lat_deg = strtok(text_latitude, "deg'");
710 lat_min = strtok(nullptr, "deg'");
711 if (!lat_deg || !lat_min)
715 latitude = atof(lat_deg) + atof(lat_min) / 60;
716 if (!g_strcmp0(text_latitude_ref, "South"))
718 latitude = -latitude;
720 lon_deg = strtok(text_longitude, "deg'");
721 lon_min = strtok(nullptr, "deg'");
722 if (!lon_deg || !lon_min)
726 longitude = atof(lon_deg) + atof(lon_min) / 60;
727 if (!g_strcmp0(text_longitude_ref, "West"))
729 longitude = -longitude;
732 timezone_path = g_build_filename(get_rc_dir(), TIMEZONE_DATABASE_FILE, NULL);
733 if (g_file_test(timezone_path, G_FILE_TEST_EXISTS))
735 ZDSetErrorHandler(ZoneDetect_onError);
736 cd = ZDOpenDatabase(timezone_path);
739 results = ZDLookup(cd, latitude, longitude, nullptr);
742 zd_tz(results, timezone, countryname, countryalpha2);
748 log_printf("Error: Init of timezone database %s failed\n", timezone_path);
752 g_free(timezone_path);
755 if (ret && text_date && text_time)
757 *exif_date_time = g_strconcat(text_date, ":", text_time, NULL);
767 * @brief Creates local time from GPS lat/long
769 * @returns Localised time and date
771 * GPS lat/long is translated to timezone using ZoneDetect.
772 * GPS UTC is converted to Unix time stamp (seconds since 1970).
773 * The TZ environment variable is set to the relevant timezone
774 * and the Unix timestamp converted to local time using locale.
775 * If the conversion fails, unformatted UTC is returned.
777 static gchar *exif_build_formatted_localtime(ExifData *exif)
782 GError *error = nullptr;
783 gchar *time_zone_image;
784 gchar *time_zone_org;
788 gchar *exif_date_time = nullptr;
789 gchar *timezone = nullptr;
790 gchar *countryname = nullptr;
791 gchar *countryalpha2 = nullptr;
793 if (exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2))
795 time_zone_image = g_strconcat("TZ=", timezone, NULL);
796 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
797 setenv("TZ", "UTC", TRUE);
799 memset(&tm_utc, 0, sizeof(tm_utc));
800 if (exif_date_time && strptime(exif_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
802 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
803 putenv(time_zone_image); // Switch to destination time zone
805 tm_local = localtime(&stamp);
807 /* Convert to localtime using locale */
808 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
811 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
814 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
819 g_free(exif_date_time);
820 exif_date_time = tmp;
824 putenv(time_zone_org);
826 g_free(time_zone_image);
827 g_free(time_zone_org);
832 g_free(countryalpha2);
834 return exif_date_time;
838 * @brief Gets timezone from GPS lat/long
840 * @returns Timezone string in the form "Europe/London"
844 static gchar *exif_build_formatted_timezone(ExifData *exif)
846 gchar *exif_date_time = nullptr;
847 gchar *timezone = nullptr;
848 gchar *countryname = nullptr;
849 gchar *countryalpha2 = nullptr;
851 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
853 g_free(exif_date_time);
855 g_free(countryalpha2);
861 * @brief Gets countryname from GPS lat/long
863 * @returns Countryname string
867 static gchar *exif_build_formatted_countryname(ExifData *exif)
869 gchar *exif_date_time = nullptr;
870 gchar *timezone = nullptr;
871 gchar *countryname = nullptr;
872 gchar *countryalpha2 = nullptr;
874 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
876 g_free(exif_date_time);
878 g_free(countryalpha2);
884 * @brief Gets two-letter country code from GPS lat/long
886 * @returns Countryalpha2 string
890 static gchar *exif_build_formatted_countrycode(ExifData *exif)
892 gchar *exif_date_time = nullptr;
893 gchar *timezone = nullptr;
894 gchar *countryname = nullptr;
895 gchar *countryalpha2 = nullptr;
897 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
899 g_free(exif_date_time);
903 return countryalpha2;
906 static gchar *exif_build_formatted_star_rating(ExifData *exif)
910 exif_get_integer(exif, "Xmp.xmp.Rating", &n);
912 return convert_rating_to_stars(n);
915 /* List of custom formatted pseudo-exif tags */
916 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
918 ExifFormattedText ExifFormattedList[] = {
919 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
920 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
921 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
922 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
923 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
924 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
925 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
926 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
927 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
928 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
929 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
930 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
931 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
932 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
933 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
934 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
935 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
936 EXIF_FORMATTED_TAG(countryname, N_("Country name")),
937 EXIF_FORMATTED_TAG(countrycode, N_("Country code")),
938 EXIF_FORMATTED_TAG(star_rating, N_("Star rating")),
939 {"file.size", N_("File size"), nullptr},
940 {"file.date", N_("File date"), nullptr},
941 {"file.mode", N_("File mode"), nullptr},
942 {"file.ctime", N_("File ctime"), nullptr},
943 {"file.owner", N_("File owner"), nullptr},
944 {"file.group", N_("File group"), nullptr},
945 {"file.link", N_("File link"), nullptr},
946 {"file.class", N_("File class"), nullptr},
947 {"file.page_no", N_("Page no."), nullptr},
948 {"lua.lensID", N_("Lens"), nullptr},
949 { nullptr, nullptr, nullptr }
952 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
954 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
958 if (key_valid) *key_valid = TRUE;
960 key += EXIF_FORMATTED_LEN;
961 for (i = 0; ExifFormattedList[i].key; i++)
962 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
963 return ExifFormattedList[i].build_func(exif);
966 if (key_valid) *key_valid = FALSE;
970 gchar *exif_get_description_by_key(const gchar *key)
972 if (!key) return nullptr;
974 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 || strncmp(key, "file.", 5) == 0 || strncmp(key, "lua.", 4) == 0)
978 for (i = 0; ExifFormattedList[i].key; i++)
979 if (strcmp(key, ExifFormattedList[i].key) == 0)
980 return g_strdup(_(ExifFormattedList[i].description));
983 return exif_get_tag_description_by_key(key);
986 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
990 item = exif_get_item(exif, key);
991 return exif_item_get_integer(item, value);
994 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
998 item = exif_get_item(exif, key);
999 return exif_item_get_rational(item, sign, 0);
1002 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
1008 if (!key) return nullptr;
1010 text = exif_get_formatted_by_key(exif, key, &key_valid);
1011 if (key_valid) return text;
1013 item = exif_get_item(exif, key);
1014 if (item) return exif_item_get_data_as_text(item, exif);
1020 static FileCacheData *exif_cache;
1022 void exif_release_cb(FileData *fd)
1024 exif_free(fd->exif);
1028 void exif_init_cache()
1030 g_assert(!exif_cache);
1031 exif_cache = file_cache_new(exif_release_cb, 4);
1034 ExifData *exif_read_fd(FileData *fd)
1036 gchar *sidecar_path;
1038 if (!exif_cache) exif_init_cache();
1040 if (!fd) return nullptr;
1042 if (file_cache_get(exif_cache, fd)) return fd->exif;
1043 g_assert(fd->exif == nullptr);
1045 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
1046 * not writable directly, thus it should contain the most up-to-date version */
1047 sidecar_path = nullptr;
1050 /* we are not able to handle XMP sidecars without exiv2 */
1051 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
1053 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
1056 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
1058 g_free(sidecar_path);
1059 file_cache_put(exif_cache, fd, 1);
1064 void exif_free_fd(FileData *fd, ExifData *exif)
1067 g_assert(fd->exif == exif);
1070 /* embedded icc in jpeg */
1072 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1074 guint seg_offset = 0;
1075 guint seg_length = 0;
1076 guint chunk_offset[255];
1077 guint chunk_length[255];
1078 guint chunk_count = 0;
1080 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1081 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1082 NN = segment number for data
1083 TT = total number of ICC segments (TT in each ICC segment should match)
1086 while (jpeg_segment_find(data + seg_offset + seg_length,
1087 size - seg_offset - seg_length,
1089 "ICC_PROFILE\x00", 12,
1090 &seg_offset, &seg_length))
1095 if (seg_length < 14) return FALSE;
1097 chunk_num = data[seg_offset + 12];
1098 chunk_tot = data[seg_offset + 13];
1100 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1102 if (chunk_count == 0)
1106 chunk_count = static_cast<guint>(chunk_tot);
1107 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1108 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1111 if (chunk_tot != chunk_count ||
1112 chunk_num > chunk_count) return FALSE;
1115 chunk_offset[chunk_num] = seg_offset + 14;
1116 chunk_length[chunk_num] = seg_length - 14;
1119 if (chunk_count > 0)
1122 guint cp_length = 0;
1125 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1126 cp_data = static_cast<guchar *>(g_malloc(cp_length));
1128 for (i = 0; i < chunk_count; i++)
1130 if (chunk_offset[i] == 0)
1132 /* error, we never saw this chunk */
1136 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1138 DEBUG_1("Found embedded icc profile in jpeg");
1139 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1148 *-------------------------------------------------------------------
1150 * it is here because it shares tag neming infrastructure with exif
1151 * we should probably not invest too much effort into this because
1152 * new exiv2 will support the same functionality
1153 * https://dev.exiv2.org/issues/505
1154 *-------------------------------------------------------------------
1157 static gchar *mode_number(mode_t m)
1165 mb = mu = mg = mo = 0;
1167 if (m & S_ISUID) mb |= 4;
1168 if (m & S_ISGID) mb |= 2;
1169 if (m & S_ISVTX) mb |= 1;
1171 if (m & S_IRUSR) mu |= 4;
1172 if (m & S_IWUSR) mu |= 2;
1173 if (m & S_IXUSR) mu |= 1;
1175 if (m & S_IRGRP) mg |= 4;
1176 if (m & S_IWGRP) mg |= 2;
1177 if (m & S_IXGRP) mg |= 1;
1179 if (m & S_IROTH) mo |= 4;
1180 if (m & S_IWOTH) mo |= 2;
1181 if (m & S_IXOTH) mo |= 1;
1183 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1184 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1185 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1186 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1187 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1188 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1189 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1190 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1191 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1194 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1197 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat)
1201 if (strcmp(key, "file.size") == 0)
1203 return g_strdup_printf("%ld", static_cast<long>(fd->size));
1205 if (strcmp(key, "file.date") == 0)
1207 return g_strdup(text_from_time(fd->date));
1209 if (strcmp(key, "file.mode") == 0)
1211 return mode_number(fd->mode);
1213 if (strcmp(key, "file.ctime") == 0)
1215 return g_strdup(text_from_time(fd->cdate));
1217 if (strcmp(key, "file.class") == 0)
1219 return g_strdup(format_class_list[fd->format_class]);
1221 if (strcmp(key, "file.owner") == 0)
1223 return g_strdup(fd->owner);
1225 if (strcmp(key, "file.group") == 0)
1227 return g_strdup(fd->group);
1229 if (strcmp(key, "file.link") == 0)
1231 return g_strdup(fd->sym_link);
1233 if (strcmp(key, "file.page_no") == 0)
1235 if (fd->page_total > 1)
1237 page_n_of_m = g_strdup_printf("[%d/%d]", fd->page_num + 1, fd->page_total);
1243 return g_strdup("");
1247 gchar *metadata_lua_info(FileData *fd, const gchar *key, MetadataFormat)
1250 gchar *script_name_utf8;
1255 script_name_utf8 = g_strdup(key + 4);
1256 script_name = path_from_utf8(script_name_utf8);
1258 raw_data = lua_callvalue(fd, script_name, nullptr);
1259 valid_data = g_utf8_make_valid(raw_data, -1);
1260 data = g_utf8_substring(valid_data, 0, 150);
1262 g_free(script_name);
1263 g_free(script_name_utf8);
1270 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */