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.
29 /*** color support enabled ***/
41 #include "filecache.h"
43 #include "ui-fileops.h"
45 #include "jpeg-parser.h"
47 #include "zonedetect.h"
50 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
52 if (!r || r->den == 0.0) return 0.0;
54 if (sign) return static_cast<gdouble>(static_cast<gint>(r->num)) / static_cast<gdouble>(static_cast<gint>(r->den));
55 return static_cast<gdouble>(r->num) / r->den;
58 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
63 r = exif_get_rational(exif, key, &sign);
64 return exif_rational_to_double(r, sign);
67 static GString *append_comma_text(GString *string, const gchar *text)
69 string = g_string_append(string, ", ");
70 string = g_string_append(string, text);
75 static gchar *remove_common_prefix(gchar *s, gchar *t)
79 if (!s || !t) return t;
81 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
85 if (s[i-1] == ' ' || !s[i])
94 static gdouble get_crop_factor(ExifData *exif)
96 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
97 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
98 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
101 gdouble xsize, ysize, size, ratio;
103 if (xres == 0.0 || yres == 0.0) return 0.0;
105 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
106 if (res_unit < 1 || res_unit > 5) return 0.0;
108 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
109 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
111 xsize = w * res_unit_tbl[res_unit] / xres;
112 ysize = h * res_unit_tbl[res_unit] / yres;
114 ratio = xsize / ysize;
116 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
118 size = hypot(xsize, ysize);
120 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
122 return hypot(36, 24) / size;
125 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
127 gint str_len = strlen(str);
129 if (suffix_len < 0) suffix_len = strlen(suffix);
130 if (str_len < suffix_len) return FALSE;
132 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
133 str[str_len - suffix_len] = '\0';
138 static gchar *exif_build_formatted_Camera(ExifData *exif)
141 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
142 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
143 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
151 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
152 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
153 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
163 g_strstrip(software);
165 /* remove superfluous spaces (pentax K100D) */
166 for (i = 0, j = 0; software[i]; i++, j++)
168 if (software[i] == ' ' && software[i + 1] == ' ')
170 if (i != j) software[j] = software[i];
175 model2 = remove_common_prefix(make, model);
176 software2 = remove_common_prefix(model2, software);
178 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
179 (model2) ? model2 : "",
180 (software2 && (make || model2)) ? " (" : "",
181 (software2) ? software2 : "",
182 (software2 && (make || model2)) ? ")" : "");
190 static gchar *exif_build_formatted_DateTime(ExifData *exif)
192 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
193 gchar *subsec = nullptr;
198 GError *error = nullptr;
202 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
206 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
207 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
210 /* Convert the stuff into a tm struct */
211 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
212 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
214 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
217 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
220 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
226 text = g_strdup(tmp);
234 text = g_strconcat(tmp, ".", subsec, NULL);
241 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
243 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
244 gchar *subsec = nullptr;
249 GError *error = nullptr;
253 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
257 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
258 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
261 /* Convert the stuff into a tm struct */
262 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
263 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
265 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
268 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
271 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
277 text = g_strdup(tmp);
285 text = g_strconcat(tmp, ".", subsec, NULL);
292 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
296 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", nullptr);
297 if (r && r->num && r->den)
299 gdouble n = static_cast<gdouble>(r->den) / static_cast<gdouble>(r->num);
300 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
301 n > 1.0 ? n : 1.0 / n);
303 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", nullptr);
304 if (r && r->num && r->den)
306 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
308 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
309 if (n > 1.0 && static_cast<gint>(n) - (static_cast<gint>(n/10))*10 == 1) n--;
311 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
312 n > 1.0 ? floor(n) : 1.0 / n);
317 static gchar *exif_build_formatted_Aperture(ExifData *exif)
321 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
322 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
323 if (n == 0.0) return nullptr;
325 return g_strdup_printf("f/%.1f", n);
328 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
334 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
335 if (!r) return nullptr;
337 n = exif_rational_to_double(r, sign);
338 return g_strdup_printf("%+.1f", n);
341 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
345 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
346 if (n == 0.0) return nullptr;
347 return g_strdup_printf("%.0f mm", n);
350 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
355 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
357 return g_strdup_printf("%d mm", n);
360 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
361 if (f == 0.0) return nullptr;
363 c = get_crop_factor(exif);
364 if (c == 0.0) return nullptr;
366 return g_strdup_printf("%.0f mm", f * c);
369 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
373 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
374 /* old canon may set this instead */
375 if (!text) text = exif_get_data_as_text(exif, "Exif.CanonSi.ISOSpeed");
376 /* kodak may set this instead */
377 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
381 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
387 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
388 if (!r) return nullptr;
390 if (static_cast<glong>(r->num) == static_cast<glong>(0xffffffff)) return g_strdup(_("infinity"));
391 if (static_cast<glong>(r->num) == 0) return g_strdup(_("unknown"));
393 n = exif_rational_to_double(r, sign);
394 if (n == 0.0) return _("unknown");
395 return g_strdup_printf("%.3f m", n);
398 static gchar *exif_build_formatted_Flash(ExifData *exif)
400 /* grr, flash is a bitmask... */
405 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return nullptr;
407 /* Exif 2.1 only defines first 3 bits */
408 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
410 /* must be Exif 2.2 */
411 string = g_string_new("");
413 /* flash fired (bit 0) */
414 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
416 /* flash mode (bits 3, 4) */
418 if (v) string = append_comma_text(string, _("mode:"));
422 string = g_string_append(string, _("on"));
425 string = g_string_append(string, _("off"));
428 string = g_string_append(string, _("auto"));
432 /* return light (bits 1, 2) */
434 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
435 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
437 /* we ignore flash function (bit 5) */
439 /* red-eye (bit 6) */
440 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
442 return g_string_free(string, FALSE);
445 static gchar *exif_build_formatted_Resolution(ExifData *exif)
447 ExifRational *rx, *ry;
451 rx = exif_get_rational(exif, "Exif.Image.XResolution", nullptr);
452 ry = exif_get_rational(exif, "Exif.Image.YResolution", nullptr);
453 if (!rx || !ry) return nullptr;
455 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
456 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? static_cast<gdouble>(rx->num) / rx->den : 1.0,
457 ry->den ? static_cast<gdouble>(ry->num) / ry->den : 1.0,
458 _("dot"), (units) ? units : _("unknown"));
464 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
467 cmsUInt8Number profileID[17];
469 const gchar *name = "";
470 const gchar *source = "";
471 guchar *profile_data;
474 profile_data = exif_get_color_profile(exif, &profile_len);
478 gchar *interop_index;
480 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
481 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
482 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
487 source = "ColorSpace";
489 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
491 name = _("AdobeRGB");
492 source = (cs == 2) ? "ColorSpace" : "Iop";
495 g_free(interop_index);
499 source = _("embedded");
505 profile = cmsOpenProfileFromMem(profile_data, profile_len);
509 profileID[16] = '\0';
510 cmsGetHeaderProfileID(profile, profileID);
511 name = reinterpret_cast<gchar *>(profileID);
513 name = (gchar *) cmsTakeProductName(profile);
515 cmsCloseProfile(profile);
517 g_free(profile_data);
521 if (name[0] == 0 && source[0] == 0) return nullptr;
522 return g_strdup_printf("%s (%s)", name, source);
525 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
535 string = g_string_new("");
537 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
538 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
542 for (i = 0; i < exif_item_get_elements(item); i++)
544 value = exif_item_get_rational(item, nullptr, i);
545 if (value && value->num && value->den)
546 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
548 p1 = static_cast<gint>(p);
549 p2 = static_cast<gint>((p - p1)*60);
550 p3 = ((p - p1)*60 - p2)*60;
552 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
553 } // if (item && ref)
555 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
556 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
560 for (i = 0; i < exif_item_get_elements(item); i++)
562 value = exif_item_get_rational(item, nullptr, i);
563 if (value && value->num && value->den)
564 p += static_cast<gdouble>(value->num) / static_cast<gdouble>(value->den) / pow(60.0, static_cast<gdouble>(i));
566 p1 = static_cast<gint>(p);
567 p2 = static_cast<gint>((p - p1)*60);
568 p3 = ((p - p1)*60 - p2)*60;
570 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
571 } // if (item && ref)
573 return g_string_free(string, FALSE);
574 } // static gchar *exif_build_forma...
576 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
583 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
584 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", nullptr);
586 if (!r || !item) return nullptr;
588 alt = exif_rational_to_double(r, 0);
589 exif_item_get_integer(item, &ref);
591 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
595 * @brief Extracts timezone data from a ZoneDetect search structure
596 * @param[in] results ZoneDetect search structure
597 * @param[out] timezone in the form "Europe/London"
598 * @param[out] countryname in the form "United Kingdom"
599 * @param[out] countryalpha2 in the form "GB"
601 * Refer to https://github.com/BertoldVdb/ZoneDetect
602 * for structure details
604 static void zd_tz(ZoneDetectResult *results, gchar **timezone, gchar **countryname, gchar **countryalpha2)
606 gchar *timezone_pre = nullptr;
607 gchar *timezone_id = nullptr;
608 unsigned int index = 0;
610 while(results[index].lookupResult != ZD_LOOKUP_END)
612 if(results[index].data)
614 for(unsigned int i=0; i<results[index].numFields; i++)
616 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
618 timezone_pre = g_strdup(results[index].data[i]);
620 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
622 timezone_id = g_strdup(results[index].data[i]);
624 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryName"))
626 *countryname = g_strdup(results[index].data[i]);
628 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryAlpha2"))
630 *countryalpha2 = g_strdup(results[index].data[i]);
637 *timezone = g_strconcat(timezone_pre, timezone_id, NULL);
638 g_free(timezone_pre);
642 void ZoneDetect_onError(int errZD, int errNative)
644 log_printf("Error: ZoneDetect %s (0x%08X)\n", ZDGetErrorString(errZD), (unsigned)errNative);
648 * @brief Gets timezone data from an exif structure
650 * @returns TRUE if timezone data found AND GPS date and time found
651 * @param[out] exif_date_time exif date/time in the form 2018:11:30:17:05:04
652 * @param[out] timezone in the form "Europe/London"
653 * @param[out] countryname in the form "United Kingdom"
654 * @param[out] countryalpha2 in the form "GB"
658 static gboolean exif_build_tz_data(ExifData *exif, gchar **exif_date_time, gchar **timezone, gchar **countryname, gchar **countryalpha2)
662 gchar *text_latitude;
663 gchar *text_longitude;
664 gchar *text_latitude_ref;
665 gchar *text_longitude_ref;
672 gchar *timezone_path;
674 ZoneDetectResult *results;
675 gboolean ret = FALSE;
677 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
678 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
679 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
680 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
681 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
682 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
684 if (text_latitude && text_longitude && text_latitude_ref && text_longitude_ref)
686 lat_deg = strtok(text_latitude, "deg'");
687 lat_min = strtok(nullptr, "deg'");
688 if (!lat_deg || !lat_min)
692 latitude = atof(lat_deg) + atof(lat_min) / 60;
693 if (!g_strcmp0(text_latitude_ref, "South"))
695 latitude = -latitude;
697 lon_deg = strtok(text_longitude, "deg'");
698 lon_min = strtok(nullptr, "deg'");
699 if (!lon_deg || !lon_min)
703 longitude = atof(lon_deg) + atof(lon_min) / 60;
704 if (!g_strcmp0(text_longitude_ref, "West"))
706 longitude = -longitude;
709 timezone_path = g_build_filename(get_rc_dir(), TIMEZONE_DATABASE_FILE, NULL);
710 if (g_file_test(timezone_path, G_FILE_TEST_EXISTS))
712 ZDSetErrorHandler(ZoneDetect_onError);
713 cd = ZDOpenDatabase(timezone_path);
716 results = ZDLookup(cd, latitude, longitude, nullptr);
719 zd_tz(results, timezone, countryname, countryalpha2);
725 log_printf("Error: Init of timezone database %s failed\n", timezone_path);
729 g_free(timezone_path);
732 if (ret && text_date && text_time)
734 *exif_date_time = g_strconcat(text_date, ":", text_time, NULL);
744 * @brief Creates local time from GPS lat/long
746 * @returns Localised time and date
748 * GPS lat/long is translated to timezone using ZoneDetect.
749 * GPS UTC is converted to Unix time stamp (seconds since 1970).
750 * The TZ environment variable is set to the relevant timezone
751 * and the Unix timestamp converted to local time using locale.
752 * If the conversion fails, unformatted UTC is returned.
754 static gchar *exif_build_formatted_localtime(ExifData *exif)
759 GError *error = nullptr;
760 gchar *time_zone_image;
761 gchar *time_zone_org;
765 gchar *exif_date_time = nullptr;
766 gchar *timezone = nullptr;
767 gchar *countryname = nullptr;
768 gchar *countryalpha2 = nullptr;
770 if (exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2))
772 time_zone_image = g_strconcat("TZ=", timezone, NULL);
773 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
774 setenv("TZ", "UTC", TRUE);
776 memset(&tm_utc, 0, sizeof(tm_utc));
777 if (exif_date_time && strptime(exif_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
779 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
780 putenv(time_zone_image); // Switch to destination time zone
782 tm_local = localtime(&stamp);
784 /* Convert to localtime using locale */
785 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
788 tmp = g_locale_to_utf8(buf, buflen, nullptr, nullptr, &error);
791 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
796 g_free(exif_date_time);
797 exif_date_time = tmp;
801 putenv(time_zone_org);
803 g_free(time_zone_image);
804 g_free(time_zone_org);
809 g_free(countryalpha2);
811 return exif_date_time;
815 * @brief Gets timezone from GPS lat/long
817 * @returns Timezone string in the form "Europe/London"
821 static gchar *exif_build_formatted_timezone(ExifData *exif)
823 gchar *exif_date_time = nullptr;
824 gchar *timezone = nullptr;
825 gchar *countryname = nullptr;
826 gchar *countryalpha2 = nullptr;
828 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
830 g_free(exif_date_time);
832 g_free(countryalpha2);
838 * @brief Gets countryname from GPS lat/long
840 * @returns Countryname string
844 static gchar *exif_build_formatted_countryname(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 two-letter country code from GPS lat/long
863 * @returns Countryalpha2 string
867 static gchar *exif_build_formatted_countrycode(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);
880 return countryalpha2;
883 static gchar *exif_build_formatted_star_rating(ExifData *exif)
887 exif_get_integer(exif, "Xmp.xmp.Rating", &n);
889 return convert_rating_to_stars(n);
892 /* List of custom formatted pseudo-exif tags */
893 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
895 ExifFormattedText ExifFormattedList[] = {
896 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
897 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
898 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
899 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
900 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
901 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
902 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
903 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
904 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
905 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
906 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
907 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
908 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
909 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
910 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
911 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
912 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
913 EXIF_FORMATTED_TAG(countryname, N_("Country name")),
914 EXIF_FORMATTED_TAG(countrycode, N_("Country code")),
915 EXIF_FORMATTED_TAG(star_rating, N_("Star rating")),
916 {"file.size", N_("File size"), nullptr},
917 {"file.date", N_("File date"), nullptr},
918 {"file.mode", N_("File mode"), nullptr},
919 {"file.ctime", N_("File ctime"), nullptr},
920 {"file.owner", N_("File owner"), nullptr},
921 {"file.group", N_("File group"), nullptr},
922 {"file.link", N_("File link"), nullptr},
923 {"file.class", N_("File class"), nullptr},
924 {"file.page_no", N_("Page no."), nullptr},
925 {"lua.lensID", N_("Lens"), nullptr},
926 { nullptr, nullptr, nullptr }
929 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
931 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
935 if (key_valid) *key_valid = TRUE;
937 key += EXIF_FORMATTED_LEN;
938 for (i = 0; ExifFormattedList[i].key; i++)
939 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
940 return ExifFormattedList[i].build_func(exif);
943 if (key_valid) *key_valid = FALSE;
947 gchar *exif_get_description_by_key(const gchar *key)
949 if (!key) return nullptr;
951 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 || strncmp(key, "file.", 5) == 0 || strncmp(key, "lua.", 4) == 0)
955 for (i = 0; ExifFormattedList[i].key; i++)
956 if (strcmp(key, ExifFormattedList[i].key) == 0)
957 return g_strdup(_(ExifFormattedList[i].description));
960 return exif_get_tag_description_by_key(key);
963 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
967 item = exif_get_item(exif, key);
968 return exif_item_get_integer(item, value);
971 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
975 item = exif_get_item(exif, key);
976 return exif_item_get_rational(item, sign, 0);
979 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
985 if (!key) return nullptr;
987 text = exif_get_formatted_by_key(exif, key, &key_valid);
988 if (key_valid) return text;
990 item = exif_get_item(exif, key);
991 if (item) return exif_item_get_data_as_text(item, exif);
997 static FileCacheData *exif_cache;
999 void exif_release_cb(FileData *fd)
1001 exif_free(fd->exif);
1005 void exif_init_cache()
1007 g_assert(!exif_cache);
1008 exif_cache = file_cache_new(exif_release_cb, 4);
1011 ExifData *exif_read_fd(FileData *fd)
1013 gchar *sidecar_path;
1015 if (!exif_cache) exif_init_cache();
1017 if (!fd) return nullptr;
1019 if (file_cache_get(exif_cache, fd)) return fd->exif;
1020 g_assert(fd->exif == nullptr);
1022 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
1023 * not writable directly, thus it should contain the most up-to-date version */
1024 sidecar_path = nullptr;
1027 /* we are not able to handle XMP sidecars without exiv2 */
1028 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
1030 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
1033 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
1035 g_free(sidecar_path);
1036 file_cache_put(exif_cache, fd, 1);
1041 void exif_free_fd(FileData *fd, ExifData *exif)
1044 g_assert(fd->exif == exif);
1047 /* embedded icc in jpeg */
1049 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1051 guint seg_offset = 0;
1052 guint seg_length = 0;
1053 guint chunk_offset[255];
1054 guint chunk_length[255];
1055 guint chunk_count = 0;
1057 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1058 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1059 NN = segment number for data
1060 TT = total number of ICC segments (TT in each ICC segment should match)
1063 while (jpeg_segment_find(data + seg_offset + seg_length,
1064 size - seg_offset - seg_length,
1066 "ICC_PROFILE\x00", 12,
1067 &seg_offset, &seg_length))
1072 if (seg_length < 14) return FALSE;
1074 chunk_num = data[seg_offset + 12];
1075 chunk_tot = data[seg_offset + 13];
1077 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1079 if (chunk_count == 0)
1083 chunk_count = static_cast<guint>(chunk_tot);
1084 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1085 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1088 if (chunk_tot != chunk_count ||
1089 chunk_num > chunk_count) return FALSE;
1092 chunk_offset[chunk_num] = seg_offset + 14;
1093 chunk_length[chunk_num] = seg_length - 14;
1096 if (chunk_count > 0)
1099 guint cp_length = 0;
1102 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1103 cp_data = static_cast<guchar *>(g_malloc(cp_length));
1105 for (i = 0; i < chunk_count; i++)
1107 if (chunk_offset[i] == 0)
1109 /* error, we never saw this chunk */
1113 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1115 DEBUG_1("Found embedded icc profile in jpeg");
1116 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1125 *-------------------------------------------------------------------
1127 * it is here because it shares tag neming infrastructure with exif
1128 * we should probably not invest too much effort into this because
1129 * new exiv2 will support the same functionality
1130 * https://dev.exiv2.org/issues/505
1131 *-------------------------------------------------------------------
1134 static gchar *mode_number(mode_t m)
1136 gint mb, mu, mg, mo;
1139 mb = mu = mg = mo = 0;
1141 if (m & S_ISUID) mb |= 4;
1142 if (m & S_ISGID) mb |= 2;
1143 if (m & S_ISVTX) mb |= 1;
1145 if (m & S_IRUSR) mu |= 4;
1146 if (m & S_IWUSR) mu |= 2;
1147 if (m & S_IXUSR) mu |= 1;
1149 if (m & S_IRGRP) mg |= 4;
1150 if (m & S_IWGRP) mg |= 2;
1151 if (m & S_IXGRP) mg |= 1;
1153 if (m & S_IROTH) mo |= 4;
1154 if (m & S_IWOTH) mo |= 2;
1155 if (m & S_IXOTH) mo |= 1;
1157 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1158 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1159 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1160 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1161 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1162 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1163 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1164 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1165 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1168 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1171 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat)
1175 if (strcmp(key, "file.size") == 0)
1177 return g_strdup_printf("%ld", static_cast<long>(fd->size));
1179 if (strcmp(key, "file.date") == 0)
1181 return g_strdup(text_from_time(fd->date));
1183 if (strcmp(key, "file.mode") == 0)
1185 return mode_number(fd->mode);
1187 if (strcmp(key, "file.ctime") == 0)
1189 return g_strdup(text_from_time(fd->cdate));
1191 if (strcmp(key, "file.class") == 0)
1193 return g_strdup(format_class_list[fd->format_class]);
1195 if (strcmp(key, "file.owner") == 0)
1197 return g_strdup(fd->owner);
1199 if (strcmp(key, "file.group") == 0)
1201 return g_strdup(fd->group);
1203 if (strcmp(key, "file.link") == 0)
1205 return g_strdup(fd->sym_link);
1207 if (strcmp(key, "file.page_no") == 0)
1209 if (fd->page_total > 1)
1211 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: */