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"
45 #include "ui-fileops.h"
47 #include "jpeg-parser.h"
49 #include "zonedetect.h"
52 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
54 if (!r || r->den == 0.0) return 0.0;
56 if (sign) return static_cast<gdouble>(static_cast<gint>(r->num)) / static_cast<gdouble>(static_cast<gint>(r->den));
57 return static_cast<gdouble>(r->num) / r->den;
60 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
65 r = exif_get_rational(exif, key, &sign);
66 return exif_rational_to_double(r, sign);
69 static GString *append_comma_text(GString *string, const gchar *text)
71 string = g_string_append(string, ", ");
72 string = g_string_append(string, text);
77 static gchar *remove_common_prefix(gchar *s, gchar *t)
81 if (!s || !t) return t;
83 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
87 if (s[i-1] == ' ' || !s[i])
96 static gdouble get_crop_factor(ExifData *exif)
98 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
99 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
100 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
103 gdouble xsize, ysize, size, ratio;
105 if (xres == 0.0 || yres == 0.0) return 0.0;
107 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
108 if (res_unit < 1 || res_unit > 5) return 0.0;
110 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
111 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
113 xsize = w * res_unit_tbl[res_unit] / xres;
114 ysize = h * res_unit_tbl[res_unit] / yres;
116 ratio = xsize / ysize;
118 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
120 size = hypot(xsize, ysize);
122 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
124 return hypot(36, 24) / size;
127 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
129 gint str_len = strlen(str);
131 if (suffix_len < 0) suffix_len = strlen(suffix);
132 if (str_len < suffix_len) return FALSE;
134 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
135 str[str_len - suffix_len] = '\0';
140 static gchar *exif_build_formatted_Camera(ExifData *exif)
143 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
144 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
145 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
153 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
154 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
155 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
165 g_strstrip(software);
167 /* remove superfluous spaces (pentax K100D) */
168 for (i = 0, j = 0; software[i]; i++, j++)
170 if (software[i] == ' ' && software[i + 1] == ' ')
172 if (i != j) software[j] = software[i];
177 model2 = remove_common_prefix(make, model);
178 software2 = remove_common_prefix(model2, software);
180 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
181 (model2) ? model2 : "",
182 (software2 && (make || model2)) ? " (" : "",
183 (software2) ? software2 : "",
184 (software2 && (make || model2)) ? ")" : "");
192 static gchar *exif_build_formatted_DateTime(ExifData *exif)
194 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
195 gchar *subsec = nullptr;
200 GError *error = nullptr;
204 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
208 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
209 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
212 /* Convert the stuff into a tm struct */
213 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
214 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
216 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
219 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
222 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
228 text = g_strdup(tmp);
236 text = g_strconcat(tmp, ".", subsec, NULL);
243 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
245 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
246 gchar *subsec = nullptr;
251 GError *error = nullptr;
255 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
259 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
260 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
263 /* Convert the stuff into a tm struct */
264 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
265 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
267 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
270 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
273 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
279 text = g_strdup(tmp);
287 text = g_strconcat(tmp, ".", subsec, NULL);
294 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
298 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", nullptr);
299 if (r && r->num && r->den)
301 gdouble n = static_cast<gdouble>(r->den) / static_cast<gdouble>(r->num);
302 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
303 n > 1.0 ? n : 1.0 / n);
305 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", nullptr);
306 if (r && r->num && r->den)
308 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
310 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
311 if (n > 1.0 && static_cast<gint>(n) - (static_cast<gint>(n/10))*10 == 1) n--;
313 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
314 n > 1.0 ? floor(n) : 1.0 / n);
319 static gchar *exif_build_formatted_Aperture(ExifData *exif)
323 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
324 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
325 if (n == 0.0) return nullptr;
327 return g_strdup_printf("f/%.1f", n);
330 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
336 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
337 if (!r) return nullptr;
339 n = exif_rational_to_double(r, sign);
340 return g_strdup_printf("%+.1f", n);
343 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
347 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
348 if (n == 0.0) return nullptr;
349 return g_strdup_printf("%.0f mm", n);
352 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
357 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
359 return g_strdup_printf("%d mm", n);
362 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
363 if (f == 0.0) return nullptr;
365 c = get_crop_factor(exif);
366 if (c == 0.0) return nullptr;
368 return g_strdup_printf("%.0f mm", f * c);
371 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
375 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
376 /* old canon may set this instead */
377 if (!text) text = exif_get_data_as_text(exif, "Exif.CanonSi.ISOSpeed");
378 /* kodak may set this instead */
379 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
383 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
389 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
390 if (!r) return nullptr;
392 if (static_cast<glong>(r->num) == static_cast<glong>(0xffffffff)) return g_strdup(_("infinity"));
393 if (static_cast<glong>(r->num) == 0) return g_strdup(_("unknown"));
395 n = exif_rational_to_double(r, sign);
396 if (n == 0.0) return _("unknown");
397 return g_strdup_printf("%.3f m", n);
400 static gchar *exif_build_formatted_Flash(ExifData *exif)
402 /* grr, flash is a bitmask... */
407 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return nullptr;
409 /* Exif 2.1 only defines first 3 bits */
410 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
412 /* must be Exif 2.2 */
413 string = g_string_new("");
415 /* flash fired (bit 0) */
416 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
418 /* flash mode (bits 3, 4) */
420 if (v) string = append_comma_text(string, _("mode:"));
424 string = g_string_append(string, _("on"));
427 string = g_string_append(string, _("off"));
430 string = g_string_append(string, _("auto"));
434 /* return light (bits 1, 2) */
436 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
437 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
439 /* we ignore flash function (bit 5) */
441 /* red-eye (bit 6) */
442 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
444 return g_string_free(string, FALSE);
447 static gchar *exif_build_formatted_Resolution(ExifData *exif)
449 ExifRational *rx, *ry;
453 rx = exif_get_rational(exif, "Exif.Image.XResolution", nullptr);
454 ry = exif_get_rational(exif, "Exif.Image.YResolution", nullptr);
455 if (!rx || !ry) return nullptr;
457 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
458 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? static_cast<gdouble>(rx->num) / rx->den : 1.0,
459 ry->den ? static_cast<gdouble>(ry->num) / ry->den : 1.0,
460 _("dot"), (units) ? units : _("unknown"));
466 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
469 cmsUInt8Number profileID[17];
471 const gchar *name = "";
472 const gchar *source = "";
473 guchar *profile_data;
476 profile_data = exif_get_color_profile(exif, &profile_len);
480 gchar *interop_index;
482 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
483 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
484 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
489 source = "ColorSpace";
491 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
493 name = _("AdobeRGB");
494 source = (cs == 2) ? "ColorSpace" : "Iop";
497 g_free(interop_index);
501 source = _("embedded");
507 profile = cmsOpenProfileFromMem(profile_data, profile_len);
511 profileID[16] = '\0';
512 cmsGetHeaderProfileID(profile, profileID);
513 name = reinterpret_cast<gchar *>(profileID);
515 name = (gchar *) cmsTakeProductName(profile);
517 cmsCloseProfile(profile);
519 g_free(profile_data);
523 if (name[0] == 0 && source[0] == 0) return nullptr;
524 return g_strdup_printf("%s (%s)", name, source);
527 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
537 string = g_string_new("");
539 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
540 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
544 for (i = 0; i < exif_item_get_elements(item); i++)
546 value = exif_item_get_rational(item, nullptr, i);
547 if (value && value->num && value->den)
548 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
550 p1 = static_cast<gint>(p);
551 p2 = static_cast<gint>((p - p1)*60);
552 p3 = ((p - p1)*60 - p2)*60;
554 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
555 } // if (item && ref)
557 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
558 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
562 for (i = 0; i < exif_item_get_elements(item); i++)
564 value = exif_item_get_rational(item, nullptr, i);
565 if (value && value->num && value->den)
566 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
568 p1 = static_cast<gint>(p);
569 p2 = static_cast<gint>((p - p1)*60);
570 p3 = ((p - p1)*60 - p2)*60;
572 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
573 } // if (item && ref)
575 return g_string_free(string, FALSE);
576 } // static gchar *exif_build_forma...
578 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
585 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
586 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", nullptr);
588 if (!r || !item) return nullptr;
590 alt = exif_rational_to_double(r, 0);
591 exif_item_get_integer(item, &ref);
593 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
597 * @brief Extracts timezone data from a ZoneDetect search structure
598 * @param[in] results ZoneDetect search structure
599 * @param[out] timezone in the form "Europe/London"
600 * @param[out] countryname in the form "United Kingdom"
601 * @param[out] countryalpha2 in the form "GB"
603 * Refer to https://github.com/BertoldVdb/ZoneDetect
604 * for structure details
606 static void zd_tz(ZoneDetectResult *results, gchar **timezone, gchar **countryname, gchar **countryalpha2)
608 gchar *timezone_pre = nullptr;
609 gchar *timezone_id = nullptr;
610 unsigned int index = 0;
612 while(results[index].lookupResult != ZD_LOOKUP_END)
614 if(results[index].data)
616 for(unsigned int i=0; i<results[index].numFields; i++)
618 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
620 timezone_pre = g_strdup(results[index].data[i]);
622 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
624 timezone_id = g_strdup(results[index].data[i]);
626 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryName"))
628 *countryname = g_strdup(results[index].data[i]);
630 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryAlpha2"))
632 *countryalpha2 = g_strdup(results[index].data[i]);
639 *timezone = g_strconcat(timezone_pre, timezone_id, NULL);
640 g_free(timezone_pre);
644 void ZoneDetect_onError(int errZD, int errNative)
646 log_printf("Error: ZoneDetect %s (0x%08X)\n", ZDGetErrorString(errZD), (unsigned)errNative);
650 * @brief Gets timezone data from an exif structure
652 * @returns TRUE if timezone data found AND GPS date and time found
653 * @param[out] exif_date_time exif date/time in the form 2018:11:30:17:05:04
654 * @param[out] timezone in the form "Europe/London"
655 * @param[out] countryname in the form "United Kingdom"
656 * @param[out] countryalpha2 in the form "GB"
660 static gboolean exif_build_tz_data(ExifData *exif, gchar **exif_date_time, gchar **timezone, gchar **countryname, gchar **countryalpha2)
664 gchar *text_latitude;
665 gchar *text_longitude;
666 gchar *text_latitude_ref;
667 gchar *text_longitude_ref;
674 gchar *timezone_path;
676 ZoneDetectResult *results;
677 gboolean ret = FALSE;
679 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
680 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
681 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
682 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
683 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
684 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
686 if (text_latitude && text_longitude && text_latitude_ref && text_longitude_ref)
688 lat_deg = strtok(text_latitude, "deg'");
689 lat_min = strtok(nullptr, "deg'");
690 if (!lat_deg || !lat_min)
694 latitude = atof(lat_deg) + atof(lat_min) / 60;
695 if (!g_strcmp0(text_latitude_ref, "South"))
697 latitude = -latitude;
699 lon_deg = strtok(text_longitude, "deg'");
700 lon_min = strtok(nullptr, "deg'");
701 if (!lon_deg || !lon_min)
705 longitude = atof(lon_deg) + atof(lon_min) / 60;
706 if (!g_strcmp0(text_longitude_ref, "West"))
708 longitude = -longitude;
711 timezone_path = g_build_filename(get_rc_dir(), TIMEZONE_DATABASE_FILE, NULL);
712 if (g_file_test(timezone_path, G_FILE_TEST_EXISTS))
714 ZDSetErrorHandler(ZoneDetect_onError);
715 cd = ZDOpenDatabase(timezone_path);
718 results = ZDLookup(cd, latitude, longitude, nullptr);
721 zd_tz(results, timezone, countryname, countryalpha2);
727 log_printf("Error: Init of timezone database %s failed\n", timezone_path);
731 g_free(timezone_path);
734 if (ret && text_date && text_time)
736 *exif_date_time = g_strconcat(text_date, ":", text_time, NULL);
746 * @brief Creates local time from GPS lat/long
748 * @returns Localised time and date
750 * GPS lat/long is translated to timezone using ZoneDetect.
751 * GPS UTC is converted to Unix time stamp (seconds since 1970).
752 * The TZ environment variable is set to the relevant timezone
753 * and the Unix timestamp converted to local time using locale.
754 * If the conversion fails, unformatted UTC is returned.
756 static gchar *exif_build_formatted_localtime(ExifData *exif)
761 GError *error = nullptr;
762 gchar *time_zone_image;
763 gchar *time_zone_org;
767 gchar *exif_date_time = nullptr;
768 gchar *timezone = nullptr;
769 gchar *countryname = nullptr;
770 gchar *countryalpha2 = nullptr;
772 if (exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2))
774 time_zone_image = g_strconcat("TZ=", timezone, NULL);
775 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
776 setenv("TZ", "UTC", TRUE);
778 memset(&tm_utc, 0, sizeof(tm_utc));
779 if (exif_date_time && strptime(exif_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
781 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
782 putenv(time_zone_image); // Switch to destination time zone
784 tm_local = localtime(&stamp);
786 /* Convert to localtime using locale */
787 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
790 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
793 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
798 g_free(exif_date_time);
799 exif_date_time = tmp;
803 putenv(time_zone_org);
805 g_free(time_zone_image);
806 g_free(time_zone_org);
811 g_free(countryalpha2);
813 return exif_date_time;
817 * @brief Gets timezone from GPS lat/long
819 * @returns Timezone string in the form "Europe/London"
823 static gchar *exif_build_formatted_timezone(ExifData *exif)
825 gchar *exif_date_time = nullptr;
826 gchar *timezone = nullptr;
827 gchar *countryname = nullptr;
828 gchar *countryalpha2 = nullptr;
830 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
832 g_free(exif_date_time);
834 g_free(countryalpha2);
840 * @brief Gets countryname from GPS lat/long
842 * @returns Countryname string
846 static gchar *exif_build_formatted_countryname(ExifData *exif)
848 gchar *exif_date_time = nullptr;
849 gchar *timezone = nullptr;
850 gchar *countryname = nullptr;
851 gchar *countryalpha2 = nullptr;
853 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
855 g_free(exif_date_time);
857 g_free(countryalpha2);
863 * @brief Gets two-letter country code from GPS lat/long
865 * @returns Countryalpha2 string
869 static gchar *exif_build_formatted_countrycode(ExifData *exif)
871 gchar *exif_date_time = nullptr;
872 gchar *timezone = nullptr;
873 gchar *countryname = nullptr;
874 gchar *countryalpha2 = nullptr;
876 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
878 g_free(exif_date_time);
882 return countryalpha2;
885 static gchar *exif_build_formatted_star_rating(ExifData *exif)
889 exif_get_integer(exif, "Xmp.xmp.Rating", &n);
891 return convert_rating_to_stars(n);
894 /* List of custom formatted pseudo-exif tags */
895 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
897 ExifFormattedText ExifFormattedList[] = {
898 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
899 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
900 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
901 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
902 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
903 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
904 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
905 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
906 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
907 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
908 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
909 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
910 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
911 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
912 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
913 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
914 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
915 EXIF_FORMATTED_TAG(countryname, N_("Country name")),
916 EXIF_FORMATTED_TAG(countrycode, N_("Country code")),
917 EXIF_FORMATTED_TAG(star_rating, N_("Star rating")),
918 {"file.size", N_("File size"), nullptr},
919 {"file.date", N_("File date"), nullptr},
920 {"file.mode", N_("File mode"), nullptr},
921 {"file.ctime", N_("File ctime"), nullptr},
922 {"file.owner", N_("File owner"), nullptr},
923 {"file.group", N_("File group"), nullptr},
924 {"file.link", N_("File link"), nullptr},
925 {"file.class", N_("File class"), nullptr},
926 {"file.page_no", N_("Page no."), nullptr},
927 {"lua.lensID", N_("Lens"), nullptr},
928 { nullptr, nullptr, nullptr }
931 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
933 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
937 if (key_valid) *key_valid = TRUE;
939 key += EXIF_FORMATTED_LEN;
940 for (i = 0; ExifFormattedList[i].key; i++)
941 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
942 return ExifFormattedList[i].build_func(exif);
945 if (key_valid) *key_valid = FALSE;
949 gchar *exif_get_description_by_key(const gchar *key)
951 if (!key) return nullptr;
953 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 || strncmp(key, "file.", 5) == 0 || strncmp(key, "lua.", 4) == 0)
957 for (i = 0; ExifFormattedList[i].key; i++)
958 if (strcmp(key, ExifFormattedList[i].key) == 0)
959 return g_strdup(_(ExifFormattedList[i].description));
962 return exif_get_tag_description_by_key(key);
965 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
969 item = exif_get_item(exif, key);
970 return exif_item_get_integer(item, value);
973 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
977 item = exif_get_item(exif, key);
978 return exif_item_get_rational(item, sign, 0);
981 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
987 if (!key) return nullptr;
989 text = exif_get_formatted_by_key(exif, key, &key_valid);
990 if (key_valid) return text;
992 item = exif_get_item(exif, key);
993 if (item) return exif_item_get_data_as_text(item, exif);
999 static FileCacheData *exif_cache;
1001 void exif_release_cb(FileData *fd)
1003 exif_free(fd->exif);
1007 void exif_init_cache()
1009 g_assert(!exif_cache);
1010 exif_cache = file_cache_new(exif_release_cb, 4);
1013 ExifData *exif_read_fd(FileData *fd)
1015 gchar *sidecar_path;
1017 if (!exif_cache) exif_init_cache();
1019 if (!fd) return nullptr;
1021 if (file_cache_get(exif_cache, fd)) return fd->exif;
1022 g_assert(fd->exif == nullptr);
1024 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
1025 * not writable directly, thus it should contain the most up-to-date version */
1026 sidecar_path = nullptr;
1029 /* we are not able to handle XMP sidecars without exiv2 */
1030 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
1032 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
1035 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
1037 g_free(sidecar_path);
1038 file_cache_put(exif_cache, fd, 1);
1043 void exif_free_fd(FileData *fd, ExifData *exif)
1046 g_assert(fd->exif == exif);
1049 /* embedded icc in jpeg */
1051 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1053 guint seg_offset = 0;
1054 guint seg_length = 0;
1055 guint chunk_offset[255];
1056 guint chunk_length[255];
1057 guint chunk_count = 0;
1059 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1060 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1061 NN = segment number for data
1062 TT = total number of ICC segments (TT in each ICC segment should match)
1065 while (jpeg_segment_find(data + seg_offset + seg_length,
1066 size - seg_offset - seg_length,
1068 "ICC_PROFILE\x00", 12,
1069 &seg_offset, &seg_length))
1074 if (seg_length < 14) return FALSE;
1076 chunk_num = data[seg_offset + 12];
1077 chunk_tot = data[seg_offset + 13];
1079 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1081 if (chunk_count == 0)
1085 chunk_count = static_cast<guint>(chunk_tot);
1086 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1087 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1090 if (chunk_tot != chunk_count ||
1091 chunk_num > chunk_count) return FALSE;
1094 chunk_offset[chunk_num] = seg_offset + 14;
1095 chunk_length[chunk_num] = seg_length - 14;
1098 if (chunk_count > 0)
1101 guint cp_length = 0;
1104 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1105 cp_data = static_cast<guchar *>(g_malloc(cp_length));
1107 for (i = 0; i < chunk_count; i++)
1109 if (chunk_offset[i] == 0)
1111 /* error, we never saw this chunk */
1115 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1117 DEBUG_1("Found embedded icc profile in jpeg");
1118 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1127 *-------------------------------------------------------------------
1129 * it is here because it shares tag neming infrastructure with exif
1130 * we should probably not invest too much effort into this because
1131 * new exiv2 will support the same functionality
1132 * https://dev.exiv2.org/issues/505
1133 *-------------------------------------------------------------------
1136 static gchar *mode_number(mode_t m)
1138 gint mb, mu, mg, mo;
1141 mb = mu = mg = mo = 0;
1143 if (m & S_ISUID) mb |= 4;
1144 if (m & S_ISGID) mb |= 2;
1145 if (m & S_ISVTX) mb |= 1;
1147 if (m & S_IRUSR) mu |= 4;
1148 if (m & S_IWUSR) mu |= 2;
1149 if (m & S_IXUSR) mu |= 1;
1151 if (m & S_IRGRP) mg |= 4;
1152 if (m & S_IWGRP) mg |= 2;
1153 if (m & S_IXGRP) mg |= 1;
1155 if (m & S_IROTH) mo |= 4;
1156 if (m & S_IWOTH) mo |= 2;
1157 if (m & S_IXOTH) mo |= 1;
1159 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1160 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1161 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1162 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1163 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1164 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1165 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1166 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1167 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1170 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1173 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat)
1177 if (strcmp(key, "file.size") == 0)
1179 return g_strdup_printf("%ld", static_cast<long>(fd->size));
1181 if (strcmp(key, "file.date") == 0)
1183 return g_strdup(text_from_time(fd->date));
1185 if (strcmp(key, "file.mode") == 0)
1187 return mode_number(fd->mode);
1189 if (strcmp(key, "file.ctime") == 0)
1191 return g_strdup(text_from_time(fd->cdate));
1193 if (strcmp(key, "file.class") == 0)
1195 return g_strdup(format_class_list[fd->format_class]);
1197 if (strcmp(key, "file.owner") == 0)
1199 return g_strdup(fd->owner);
1201 if (strcmp(key, "file.group") == 0)
1203 return g_strdup(fd->group);
1205 if (strcmp(key, "file.link") == 0)
1207 return g_strdup(fd->sym_link);
1209 if (strcmp(key, "file.page_no") == 0)
1211 if (fd->page_total > 1)
1213 page_n_of_m = g_strdup_printf("[%d/%d]", fd->page_num + 1, fd->page_total);
1219 return g_strdup("");
1223 gchar *metadata_lua_info(FileData *fd, const gchar *key, MetadataFormat)
1226 gchar *script_name_utf8;
1231 script_name_utf8 = g_strdup(key + 4);
1232 script_name = path_from_utf8(script_name_utf8);
1234 raw_data = lua_callvalue(fd, script_name, nullptr);
1235 valid_data = g_utf8_make_valid(raw_data, -1);
1236 data = g_utf8_substring(valid_data, 0, 150);
1238 g_free(script_name);
1239 g_free(script_name_utf8);
1246 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */