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"
54 #include "third-party/zonedetect.h"
56 #include "ui-fileops.h"
63 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
65 if (!r || r->den == 0.0) return 0.0;
67 if (sign) return static_cast<gdouble>(static_cast<gint>(r->num)) / static_cast<gdouble>(static_cast<gint>(r->den));
68 return static_cast<gdouble>(r->num) / r->den;
71 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
76 r = exif_get_rational(exif, key, &sign);
77 return exif_rational_to_double(r, sign);
80 static GString *append_comma_text(GString *string, const gchar *text)
82 string = g_string_append(string, ", ");
83 string = g_string_append(string, text);
88 static gchar *remove_common_prefix(gchar *s, gchar *t)
92 if (!s || !t) return t;
94 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
98 if (s[i-1] == ' ' || !s[i])
107 static gdouble get_crop_factor(ExifData *exif)
109 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
110 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
111 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
120 if (xres == 0.0 || yres == 0.0) return 0.0;
122 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
123 if (res_unit < 1 || res_unit > 5) return 0.0;
125 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
126 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
128 xsize = w * res_unit_tbl[res_unit] / xres;
129 ysize = h * res_unit_tbl[res_unit] / yres;
131 ratio = xsize / ysize;
133 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
135 size = hypot(xsize, ysize);
137 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
139 return hypot(36, 24) / size;
142 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
144 gint str_len = strlen(str);
146 if (suffix_len < 0) suffix_len = strlen(suffix);
147 if (str_len < suffix_len) return FALSE;
149 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
150 str[str_len - suffix_len] = '\0';
155 static gchar *exif_build_formatted_Camera(ExifData *exif)
158 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
159 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
160 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
168 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
169 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
170 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
181 g_strstrip(software);
183 /* remove superfluous spaces (pentax K100D) */
184 for (i = 0, j = 0; software[i]; i++, j++)
186 if (software[i] == ' ' && software[i + 1] == ' ')
188 if (i != j) software[j] = software[i];
193 model2 = remove_common_prefix(make, model);
194 software2 = remove_common_prefix(model2, software);
196 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
197 (model2) ? model2 : "",
198 (software2 && (make || model2)) ? " (" : "",
199 (software2) ? software2 : "",
200 (software2 && (make || model2)) ? ")" : "");
208 static gchar *exif_build_formatted_DateTime(ExifData *exif)
210 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
211 gchar *subsec = nullptr;
216 GError *error = nullptr;
220 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
224 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
225 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
228 /* Convert the stuff into a tm struct */
229 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
230 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
232 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
235 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
238 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
244 text = g_strdup(tmp);
252 text = g_strconcat(tmp, ".", subsec, NULL);
259 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
261 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
262 gchar *subsec = nullptr;
267 GError *error = nullptr;
271 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
275 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
276 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
279 /* Convert the stuff into a tm struct */
280 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
281 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
283 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
286 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
289 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
295 text = g_strdup(tmp);
303 text = g_strconcat(tmp, ".", subsec, NULL);
310 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
314 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", nullptr);
315 if (r && r->num && r->den)
317 gdouble n = static_cast<gdouble>(r->den) / static_cast<gdouble>(r->num);
318 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
319 n > 1.0 ? n : 1.0 / n);
321 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", nullptr);
322 if (r && r->num && r->den)
324 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
326 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
327 if (n > 1.0 && static_cast<gint>(n) - (static_cast<gint>(n/10))*10 == 1) n--;
329 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
330 n > 1.0 ? floor(n) : 1.0 / n);
335 static gchar *exif_build_formatted_Aperture(ExifData *exif)
339 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
340 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
341 if (n == 0.0) return nullptr;
343 return g_strdup_printf("f/%.1f", n);
346 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
352 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
353 if (!r) return nullptr;
355 n = exif_rational_to_double(r, sign);
356 return g_strdup_printf("%+.1f", n);
359 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
363 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
364 if (n == 0.0) return nullptr;
365 return g_strdup_printf("%.0f mm", n);
368 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
374 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
376 return g_strdup_printf("%d mm", n);
379 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
380 if (f == 0.0) return nullptr;
382 c = get_crop_factor(exif);
383 if (c == 0.0) return nullptr;
385 return g_strdup_printf("%.0f mm", f * c);
388 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
392 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
393 /* old canon may set this instead */
394 if (!text) text = exif_get_data_as_text(exif, "Exif.CanonSi.ISOSpeed");
395 /* kodak may set this instead */
396 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
400 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
406 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
407 if (!r) return nullptr;
409 if (static_cast<glong>(r->num) == static_cast<glong>(0xffffffff)) return g_strdup(_("infinity"));
410 if (static_cast<glong>(r->num) == 0) return g_strdup(_("unknown"));
412 n = exif_rational_to_double(r, sign);
413 if (n == 0.0) return _("unknown");
414 return g_strdup_printf("%.3f m", n);
417 static gchar *exif_build_formatted_Flash(ExifData *exif)
419 /* grr, flash is a bitmask... */
424 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return nullptr;
426 /* Exif 2.1 only defines first 3 bits */
427 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
429 /* must be Exif 2.2 */
430 string = g_string_new("");
432 /* flash fired (bit 0) */
433 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
435 /* flash mode (bits 3, 4) */
437 if (v) string = append_comma_text(string, _("mode:"));
441 string = g_string_append(string, _("on"));
444 string = g_string_append(string, _("off"));
447 string = g_string_append(string, _("auto"));
451 /* return light (bits 1, 2) */
453 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
454 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
456 /* we ignore flash function (bit 5) */
458 /* red-eye (bit 6) */
459 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
461 return g_string_free(string, FALSE);
464 static gchar *exif_build_formatted_Resolution(ExifData *exif)
471 rx = exif_get_rational(exif, "Exif.Image.XResolution", nullptr);
472 ry = exif_get_rational(exif, "Exif.Image.YResolution", nullptr);
473 if (!rx || !ry) return nullptr;
475 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
476 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? static_cast<gdouble>(rx->num) / rx->den : 1.0,
477 ry->den ? static_cast<gdouble>(ry->num) / ry->den : 1.0,
478 _("dot"), (units) ? units : _("unknown"));
484 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
487 cmsUInt8Number profileID[17];
489 const gchar *name = "";
490 const gchar *source = "";
491 guchar *profile_data;
494 profile_data = exif_get_color_profile(exif, &profile_len);
498 gchar *interop_index;
500 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
501 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
502 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
507 source = "ColorSpace";
509 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
511 name = _("AdobeRGB");
512 source = (cs == 2) ? "ColorSpace" : "Iop";
515 g_free(interop_index);
519 source = _("embedded");
525 profile = cmsOpenProfileFromMem(profile_data, profile_len);
529 profileID[16] = '\0';
530 cmsGetHeaderProfileID(profile, profileID);
531 name = reinterpret_cast<gchar *>(profileID);
533 name = (gchar *) cmsTakeProductName(profile);
535 cmsCloseProfile(profile);
537 g_free(profile_data);
541 if (name[0] == 0 && source[0] == 0) return nullptr;
542 return g_strdup_printf("%s (%s)", name, source);
545 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
557 string = g_string_new("");
559 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
560 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
564 for (i = 0; i < exif_item_get_elements(item); i++)
566 value = exif_item_get_rational(item, nullptr, i);
567 if (value && value->num && value->den)
568 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
570 p1 = static_cast<gint>(p);
571 p2 = static_cast<gint>((p - p1)*60);
572 p3 = ((p - p1)*60 - p2)*60;
574 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
575 } // if (item && ref)
577 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
578 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
582 for (i = 0; i < exif_item_get_elements(item); i++)
584 value = exif_item_get_rational(item, nullptr, i);
585 if (value && value->num && value->den)
586 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
588 p1 = static_cast<gint>(p);
589 p2 = static_cast<gint>((p - p1)*60);
590 p3 = ((p - p1)*60 - p2)*60;
592 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
593 } // if (item && ref)
595 return g_string_free(string, FALSE);
596 } // static gchar *exif_build_forma...
598 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
605 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
606 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", nullptr);
608 if (!r || !item) return nullptr;
610 alt = exif_rational_to_double(r, 0);
611 exif_item_get_integer(item, &ref);
613 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
617 * @brief Extracts timezone data from a ZoneDetect search structure
618 * @param[in] results ZoneDetect search structure
619 * @param[out] timezone in the form "Europe/London"
620 * @param[out] countryname in the form "United Kingdom"
621 * @param[out] countryalpha2 in the form "GB"
623 * Refer to https://github.com/BertoldVdb/ZoneDetect
624 * for structure details
626 static void zd_tz(ZoneDetectResult *results, gchar **timezone, gchar **countryname, gchar **countryalpha2)
628 gchar *timezone_pre = nullptr;
629 gchar *timezone_id = nullptr;
630 unsigned int index = 0;
632 while(results[index].lookupResult != ZD_LOOKUP_END)
634 if(results[index].data)
636 for(unsigned int i=0; i<results[index].numFields; i++)
638 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
640 timezone_pre = g_strdup(results[index].data[i]);
642 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
644 timezone_id = g_strdup(results[index].data[i]);
646 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryName"))
648 *countryname = g_strdup(results[index].data[i]);
650 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryAlpha2"))
652 *countryalpha2 = g_strdup(results[index].data[i]);
659 *timezone = g_strconcat(timezone_pre, timezone_id, NULL);
660 g_free(timezone_pre);
664 void ZoneDetect_onError(int errZD, int errNative)
666 log_printf("Error: ZoneDetect %s (0x%08X)\n", ZDGetErrorString(errZD), (unsigned)errNative);
670 * @brief Gets timezone data from an exif structure
672 * @returns TRUE if timezone data found AND GPS date and time found
673 * @param[out] exif_date_time exif date/time in the form 2018:11:30:17:05:04
674 * @param[out] timezone in the form "Europe/London"
675 * @param[out] countryname in the form "United Kingdom"
676 * @param[out] countryalpha2 in the form "GB"
680 static gboolean exif_build_tz_data(ExifData *exif, gchar **exif_date_time, gchar **timezone, gchar **countryname, gchar **countryalpha2)
684 gchar *text_latitude;
685 gchar *text_longitude;
686 gchar *text_latitude_ref;
687 gchar *text_longitude_ref;
694 gchar *timezone_path;
696 ZoneDetectResult *results;
697 gboolean ret = FALSE;
699 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
700 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
701 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
702 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
703 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
704 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
706 if (text_latitude && text_longitude && text_latitude_ref && text_longitude_ref)
708 lat_deg = strtok(text_latitude, "deg'");
709 lat_min = strtok(nullptr, "deg'");
710 if (!lat_deg || !lat_min)
714 latitude = atof(lat_deg) + atof(lat_min) / 60;
715 if (!g_strcmp0(text_latitude_ref, "South"))
717 latitude = -latitude;
719 lon_deg = strtok(text_longitude, "deg'");
720 lon_min = strtok(nullptr, "deg'");
721 if (!lon_deg || !lon_min)
725 longitude = atof(lon_deg) + atof(lon_min) / 60;
726 if (!g_strcmp0(text_longitude_ref, "West"))
728 longitude = -longitude;
731 timezone_path = g_build_filename(get_rc_dir(), TIMEZONE_DATABASE_FILE, NULL);
732 if (g_file_test(timezone_path, G_FILE_TEST_EXISTS))
734 ZDSetErrorHandler(ZoneDetect_onError);
735 cd = ZDOpenDatabase(timezone_path);
738 results = ZDLookup(cd, latitude, longitude, nullptr);
741 zd_tz(results, timezone, countryname, countryalpha2);
747 log_printf("Error: Init of timezone database %s failed\n", timezone_path);
751 g_free(timezone_path);
754 if (ret && text_date && text_time)
756 *exif_date_time = g_strconcat(text_date, ":", text_time, NULL);
766 * @brief Creates local time from GPS lat/long
768 * @returns Localised time and date
770 * GPS lat/long is translated to timezone using ZoneDetect.
771 * GPS UTC is converted to Unix time stamp (seconds since 1970).
772 * The TZ environment variable is set to the relevant timezone
773 * and the Unix timestamp converted to local time using locale.
774 * If the conversion fails, unformatted UTC is returned.
776 static gchar *exif_build_formatted_localtime(ExifData *exif)
781 GError *error = nullptr;
782 gchar *time_zone_image;
783 gchar *time_zone_org;
787 gchar *exif_date_time = nullptr;
788 gchar *timezone = nullptr;
789 gchar *countryname = nullptr;
790 gchar *countryalpha2 = nullptr;
792 if (exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2))
794 time_zone_image = g_strconcat("TZ=", timezone, NULL);
795 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
796 setenv("TZ", "UTC", TRUE);
798 memset(&tm_utc, 0, sizeof(tm_utc));
799 if (exif_date_time && strptime(exif_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
801 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
802 putenv(time_zone_image); // Switch to destination time zone
804 tm_local = localtime(&stamp);
806 /* Convert to localtime using locale */
807 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
810 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
813 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
818 g_free(exif_date_time);
819 exif_date_time = tmp;
823 putenv(time_zone_org);
825 g_free(time_zone_image);
826 g_free(time_zone_org);
831 g_free(countryalpha2);
833 return exif_date_time;
837 * @brief Gets timezone from GPS lat/long
839 * @returns Timezone string in the form "Europe/London"
843 static gchar *exif_build_formatted_timezone(ExifData *exif)
845 gchar *exif_date_time = nullptr;
846 gchar *timezone = nullptr;
847 gchar *countryname = nullptr;
848 gchar *countryalpha2 = nullptr;
850 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
852 g_free(exif_date_time);
854 g_free(countryalpha2);
860 * @brief Gets countryname from GPS lat/long
862 * @returns Countryname string
866 static gchar *exif_build_formatted_countryname(ExifData *exif)
868 gchar *exif_date_time = nullptr;
869 gchar *timezone = nullptr;
870 gchar *countryname = nullptr;
871 gchar *countryalpha2 = nullptr;
873 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
875 g_free(exif_date_time);
877 g_free(countryalpha2);
883 * @brief Gets two-letter country code from GPS lat/long
885 * @returns Countryalpha2 string
889 static gchar *exif_build_formatted_countrycode(ExifData *exif)
891 gchar *exif_date_time = nullptr;
892 gchar *timezone = nullptr;
893 gchar *countryname = nullptr;
894 gchar *countryalpha2 = nullptr;
896 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
898 g_free(exif_date_time);
902 return countryalpha2;
905 static gchar *exif_build_formatted_star_rating(ExifData *exif)
909 exif_get_integer(exif, "Xmp.xmp.Rating", &n);
911 return convert_rating_to_stars(n);
914 /* List of custom formatted pseudo-exif tags */
915 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
917 ExifFormattedText ExifFormattedList[] = {
918 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
919 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
920 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
921 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
922 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
923 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
924 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
925 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
926 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
927 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
928 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
929 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
930 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
931 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
932 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
933 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
934 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
935 EXIF_FORMATTED_TAG(countryname, N_("Country name")),
936 EXIF_FORMATTED_TAG(countrycode, N_("Country code")),
937 EXIF_FORMATTED_TAG(star_rating, N_("Star rating")),
938 {"file.size", N_("File size"), nullptr},
939 {"file.date", N_("File date"), nullptr},
940 {"file.mode", N_("File mode"), nullptr},
941 {"file.ctime", N_("File ctime"), nullptr},
942 {"file.owner", N_("File owner"), nullptr},
943 {"file.group", N_("File group"), nullptr},
944 {"file.link", N_("File link"), nullptr},
945 {"file.class", N_("File class"), nullptr},
946 {"file.page_no", N_("Page no."), nullptr},
947 {"lua.lensID", N_("Lens"), nullptr},
948 { nullptr, nullptr, nullptr }
951 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
953 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
957 if (key_valid) *key_valid = TRUE;
959 key += EXIF_FORMATTED_LEN;
960 for (i = 0; ExifFormattedList[i].key; i++)
961 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
962 return ExifFormattedList[i].build_func(exif);
965 if (key_valid) *key_valid = FALSE;
969 gchar *exif_get_description_by_key(const gchar *key)
971 if (!key) return nullptr;
973 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 || strncmp(key, "file.", 5) == 0 || strncmp(key, "lua.", 4) == 0)
977 for (i = 0; ExifFormattedList[i].key; i++)
978 if (strcmp(key, ExifFormattedList[i].key) == 0)
979 return g_strdup(_(ExifFormattedList[i].description));
982 return exif_get_tag_description_by_key(key);
985 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
989 item = exif_get_item(exif, key);
990 return exif_item_get_integer(item, value);
993 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
997 item = exif_get_item(exif, key);
998 return exif_item_get_rational(item, sign, 0);
1001 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
1007 if (!key) return nullptr;
1009 text = exif_get_formatted_by_key(exif, key, &key_valid);
1010 if (key_valid) return text;
1012 item = exif_get_item(exif, key);
1013 if (item) return exif_item_get_data_as_text(item, exif);
1019 static FileCacheData *exif_cache;
1021 void exif_release_cb(FileData *fd)
1023 exif_free(fd->exif);
1027 void exif_init_cache()
1029 g_assert(!exif_cache);
1030 exif_cache = file_cache_new(exif_release_cb, 4);
1033 ExifData *exif_read_fd(FileData *fd)
1035 gchar *sidecar_path;
1037 if (!exif_cache) exif_init_cache();
1039 if (!fd) return nullptr;
1041 if (file_cache_get(exif_cache, fd)) return fd->exif;
1042 g_assert(fd->exif == nullptr);
1044 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
1045 * not writable directly, thus it should contain the most up-to-date version */
1046 sidecar_path = nullptr;
1049 /* we are not able to handle XMP sidecars without exiv2 */
1050 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
1052 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
1055 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
1057 g_free(sidecar_path);
1058 file_cache_put(exif_cache, fd, 1);
1063 void exif_free_fd(FileData *fd, ExifData *exif)
1066 g_assert(fd->exif == exif);
1069 /* embedded icc in jpeg */
1071 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1073 guint seg_offset = 0;
1074 guint seg_length = 0;
1075 guint chunk_offset[255];
1076 guint chunk_length[255];
1077 guint chunk_count = 0;
1079 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1080 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1081 NN = segment number for data
1082 TT = total number of ICC segments (TT in each ICC segment should match)
1085 while (jpeg_segment_find(data + seg_offset + seg_length,
1086 size - seg_offset - seg_length,
1088 "ICC_PROFILE\x00", 12,
1089 &seg_offset, &seg_length))
1094 if (seg_length < 14) return FALSE;
1096 chunk_num = data[seg_offset + 12];
1097 chunk_tot = data[seg_offset + 13];
1099 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1101 if (chunk_count == 0)
1105 chunk_count = static_cast<guint>(chunk_tot);
1106 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1107 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1110 if (chunk_tot != chunk_count ||
1111 chunk_num > chunk_count) return FALSE;
1114 chunk_offset[chunk_num] = seg_offset + 14;
1115 chunk_length[chunk_num] = seg_length - 14;
1118 if (chunk_count > 0)
1121 guint cp_length = 0;
1124 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1125 cp_data = static_cast<guchar *>(g_malloc(cp_length));
1127 for (i = 0; i < chunk_count; i++)
1129 if (chunk_offset[i] == 0)
1131 /* error, we never saw this chunk */
1135 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1137 DEBUG_1("Found embedded icc profile in jpeg");
1138 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1147 *-------------------------------------------------------------------
1149 * it is here because it shares tag neming infrastructure with exif
1150 * we should probably not invest too much effort into this because
1151 * new exiv2 will support the same functionality
1152 * https://dev.exiv2.org/issues/505
1153 *-------------------------------------------------------------------
1156 static gchar *mode_number(mode_t m)
1164 mb = mu = mg = mo = 0;
1166 if (m & S_ISUID) mb |= 4;
1167 if (m & S_ISGID) mb |= 2;
1168 if (m & S_ISVTX) mb |= 1;
1170 if (m & S_IRUSR) mu |= 4;
1171 if (m & S_IWUSR) mu |= 2;
1172 if (m & S_IXUSR) mu |= 1;
1174 if (m & S_IRGRP) mg |= 4;
1175 if (m & S_IWGRP) mg |= 2;
1176 if (m & S_IXGRP) mg |= 1;
1178 if (m & S_IROTH) mo |= 4;
1179 if (m & S_IWOTH) mo |= 2;
1180 if (m & S_IXOTH) mo |= 1;
1182 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1183 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1184 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1185 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1186 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1187 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1188 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1189 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1190 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1193 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1196 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat)
1200 if (strcmp(key, "file.size") == 0)
1202 return g_strdup_printf("%ld", static_cast<long>(fd->size));
1204 if (strcmp(key, "file.date") == 0)
1206 return g_strdup(text_from_time(fd->date));
1208 if (strcmp(key, "file.mode") == 0)
1210 return mode_number(fd->mode);
1212 if (strcmp(key, "file.ctime") == 0)
1214 return g_strdup(text_from_time(fd->cdate));
1216 if (strcmp(key, "file.class") == 0)
1218 return g_strdup(format_class_list[fd->format_class]);
1220 if (strcmp(key, "file.owner") == 0)
1222 return g_strdup(fd->owner);
1224 if (strcmp(key, "file.group") == 0)
1226 return g_strdup(fd->group);
1228 if (strcmp(key, "file.link") == 0)
1230 return g_strdup(fd->sym_link);
1232 if (strcmp(key, "file.page_no") == 0)
1234 if (fd->page_total > 1)
1236 page_n_of_m = g_strdup_printf("[%d/%d]", fd->page_num + 1, fd->page_total);
1242 return g_strdup("");
1246 gchar *metadata_lua_info(FileData *fd, const gchar *key, MetadataFormat)
1249 gchar *script_name_utf8;
1254 script_name_utf8 = g_strdup(key + 4);
1255 script_name = path_from_utf8(script_name_utf8);
1257 raw_data = lua_callvalue(fd, script_name, nullptr);
1258 valid_data = g_utf8_make_valid(raw_data, -1);
1259 data = g_utf8_substring(valid_data, 0, 150);
1261 g_free(script_name);
1262 g_free(script_name_utf8);
1269 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */