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.
30 #include <sys/types.h>
36 /*** color support enabled ***/
53 #include "filefilter.h"
54 #include "filecache.h"
55 #include "format_raw.h"
56 #include "ui_fileops.h"
58 #include "jpeg_parser.h"
60 #include "zonedetect.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 (gdouble)((gint)r->num) / (gdouble)((gint)r->den);
68 return (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");
114 gdouble xsize, ysize, size, ratio;
116 if (xres == 0.0 || yres == 0.0) return 0.0;
118 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
119 if (res_unit < 1 || res_unit > 5) return 0.0;
121 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
122 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
124 xsize = w * res_unit_tbl[res_unit] / xres;
125 ysize = h * res_unit_tbl[res_unit] / yres;
127 ratio = xsize / ysize;
129 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
131 size = sqrt(xsize * xsize + ysize * ysize);
133 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
135 return sqrt(36*36+24*24) / size;
139 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
141 gint str_len = strlen(str);
143 if (suffix_len < 0) suffix_len = strlen(suffix);
144 if (str_len < suffix_len) return FALSE;
146 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
147 str[str_len - suffix_len] = '\0';
152 static gchar *exif_build_formatted_Camera(ExifData *exif)
155 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
156 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
157 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
165 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
166 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
167 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
177 g_strstrip(software);
179 /* remove superfluous spaces (pentax K100D) */
180 for (i = 0, j = 0; software[i]; i++, j++)
182 if (software[i] == ' ' && software[i + 1] == ' ')
184 if (i != j) software[j] = software[i];
189 model2 = remove_common_prefix(make, model);
190 software2 = remove_common_prefix(model2, software);
192 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
193 (model2) ? model2 : "",
194 (software2 && (make || model2)) ? " (" : "",
195 (software2) ? software2 : "",
196 (software2 && (make || model2)) ? ")" : "");
204 static gchar *exif_build_formatted_DateTime(ExifData *exif)
206 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
207 gchar *subsec = NULL;
212 GError *error = NULL;
216 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
220 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
221 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
224 /* Convert the stuff into a tm struct */
225 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
226 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
228 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
231 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
234 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
240 text = g_strdup(tmp);
248 text = g_strconcat(tmp, ".", subsec, NULL);
255 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
257 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
258 gchar *subsec = NULL;
263 GError *error = NULL;
267 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
271 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
272 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
275 /* Convert the stuff into a tm struct */
276 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
277 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
279 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
282 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
285 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
291 text = g_strdup(tmp);
299 text = g_strconcat(tmp, ".", subsec, NULL);
306 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
310 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
311 if (r && r->num && r->den)
313 gdouble n = (gdouble)r->den / (gdouble)r->num;
314 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
315 n > 1.0 ? n : 1.0 / n);
317 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
318 if (r && r->num && r->den)
320 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
322 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
323 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
325 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
326 n > 1.0 ? floor(n) : 1.0 / n);
331 static gchar *exif_build_formatted_Aperture(ExifData *exif)
335 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
336 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
337 if (n == 0.0) return NULL;
339 return g_strdup_printf("f/%.1f", n);
342 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
348 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
351 n = exif_rational_to_double(r, sign);
352 return g_strdup_printf("%+.1f", n);
355 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
359 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
360 if (n == 0.0) return NULL;
361 return g_strdup_printf("%.0f mm", n);
364 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
369 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
371 return g_strdup_printf("%d mm", n);
374 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
375 if (f == 0.0) return NULL;
377 c = get_crop_factor(exif);
378 if (c == 0.0) return NULL;
380 return g_strdup_printf("%.0f mm", f * c);
383 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
387 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
388 /* old canon may set this instead */
389 if (!text) text = exif_get_data_as_text(exif, "Exif.CanonSi.ISOSpeed");
390 /* kodak may set this instead */
391 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
395 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
401 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
404 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
405 if ((glong)r->num == 0) return g_strdup(_("unknown"));
407 n = exif_rational_to_double(r, sign);
408 if (n == 0.0) return _("unknown");
409 return g_strdup_printf("%.3f m", n);
412 static gchar *exif_build_formatted_Flash(ExifData *exif)
414 /* grr, flash is a bitmask... */
420 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
422 /* Exif 2.1 only defines first 3 bits */
423 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
425 /* must be Exif 2.2 */
426 string = g_string_new("");
428 /* flash fired (bit 0) */
429 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
431 /* flash mode (bits 3, 4) */
433 if (v) string = append_comma_text(string, _("mode:"));
437 string = g_string_append(string, _("on"));
440 string = g_string_append(string, _("off"));
443 string = g_string_append(string, _("auto"));
447 /* return light (bits 1, 2) */
449 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
450 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
452 /* we ignore flash function (bit 5) */
454 /* red-eye (bit 6) */
455 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
458 g_string_free(string, FALSE);
462 static gchar *exif_build_formatted_Resolution(ExifData *exif)
464 ExifRational *rx, *ry;
468 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
469 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
470 if (!rx || !ry) return NULL;
472 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
473 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
474 ry->den ? (gdouble)ry->num / ry->den : 1.0,
475 _("dot"), (units) ? units : _("unknown"));
481 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
484 cmsUInt8Number profileID[17];
486 const gchar *name = "";
487 const gchar *source = "";
488 guchar *profile_data;
491 profile_data = exif_get_color_profile(exif, &profile_len);
495 gchar *interop_index;
497 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
498 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
499 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
504 source = "ColorSpace";
506 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
508 name = _("AdobeRGB");
509 source = (cs == 2) ? "ColorSpace" : "Iop";
512 g_free(interop_index);
516 source = _("embedded");
522 profile = cmsOpenProfileFromMem(profile_data, profile_len);
526 profileID[16] = '\0';
527 cmsGetHeaderProfileID(profile, profileID);
528 name = (gchar *) profileID;
530 name = (gchar *) cmsTakeProductName(profile);
532 cmsCloseProfile(profile);
534 g_free(profile_data);
538 if (name[0] == 0 && source[0] == 0) return NULL;
539 return g_strdup_printf("%s (%s)", name, source);
542 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
552 string = g_string_new("");
554 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
555 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
559 for (i = 0; i < exif_item_get_elements(item); i++)
561 value = exif_item_get_rational(item, NULL, i);
562 if (value && value->num && value->den)
563 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
566 p2 = (gint)((p - p1)*60);
567 p3 = ((p - p1)*60 - p2)*60;
569 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
570 } // if (item && ref)
572 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
573 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
577 for (i = 0; i < exif_item_get_elements(item); i++)
579 value = exif_item_get_rational(item, NULL, i);
580 if (value && value->num && value->den)
581 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
584 p2 = (gint)((p - p1)*60);
585 p3 = ((p - p1)*60 - p2)*60;
587 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
588 } // if (item && ref)
591 g_string_free(string, FALSE);
594 } // static gchar *exif_build_forma...
596 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
603 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
604 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
606 if (!r || !item) return NULL;
608 alt = exif_rational_to_double(r, 0);
609 exif_item_get_integer(item, &ref);
611 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
615 * @brief Extracts timezone data from a ZoneDetect search structure
616 * @param[in] results ZoneDetect search structure
617 * @param[out] timezone in the form "Europe/London"
618 * @param[out] countryname in the form "United Kingdom"
619 * @param[out] countryalpha2 in the form "GB"
621 * Refer to https://github.com/BertoldVdb/ZoneDetect
622 * for structure details
624 static void zd_tz(ZoneDetectResult *results, gchar **timezone, gchar **countryname, gchar **countryalpha2)
626 gchar *timezone_pre = NULL;
627 gchar *timezone_id = NULL;
628 unsigned int index = 0;
630 while(results[index].lookupResult != ZD_LOOKUP_END)
632 if(results[index].data)
634 for(unsigned int i=0; i<results[index].numFields; i++)
636 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
638 timezone_pre = g_strdup(results[index].data[i]);
640 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
642 timezone_id = g_strdup(results[index].data[i]);
644 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryName"))
646 *countryname = g_strdup(results[index].data[i]);
648 if (g_strstr_len(results[index].fieldNames[i], -1, "CountryAlpha2"))
650 *countryalpha2 = g_strdup(results[index].data[i]);
657 *timezone = g_strconcat(timezone_pre, timezone_id, NULL);
658 g_free(timezone_pre);
663 * @brief Gets timezone data from an exif structure
665 * @returns TRUE if timezone data found AND GPS date and time found
666 * @param[out] exif_date_time exif date/time in the form 2018:11:30:17:05:04
667 * @param[out] timezone in the form "Europe/London"
668 * @param[out] countryname in the form "United Kingdom"
669 * @param[out] countryalpha2 in the form "GB"
673 static gboolean exif_build_tz_data(ExifData *exif, gchar **exif_date_time, gchar **timezone, gchar **countryname, gchar **countryalpha2)
677 gchar *text_latitude;
678 gchar *text_longitude;
679 gchar *text_latitude_ref;
680 gchar *text_longitude_ref;
689 ZoneDetectResult *results;
690 gboolean ret = FALSE;
692 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
693 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
694 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
695 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
696 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
697 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
699 if (text_latitude && text_longitude && text_latitude_ref && text_longitude_ref)
701 lat_deg = strtok(text_latitude, "deg'");
702 lat_min = strtok(NULL, "deg'");
703 latitude = atof(lat_deg) + atof(lat_min) / 60;
704 if (!g_strcmp0(text_latitude_ref, "South"))
706 latitude = -latitude;
708 lon_deg = strtok(text_longitude, "deg'");
709 lon_min = strtok(NULL, "deg'");
710 longitude = atof(lon_deg) + atof(lon_min) / 60;
711 if (!g_strcmp0(text_longitude_ref, "West"))
713 longitude = -longitude;
716 zd_path = g_build_filename(GQ_BIN_DIR, TIMEZONE_DATABASE, NULL);
717 if (g_file_test(zd_path, G_FILE_TEST_EXISTS))
719 cd = ZDOpenDatabase(zd_path);
722 results = ZDLookup(cd, latitude, longitude, NULL);
725 zd_tz(results, timezone, countryname, countryalpha2);
731 log_printf("Error: Init of timezone database %s failed\n", zd_path);
738 if (ret && text_date && text_time)
740 *exif_date_time = g_strconcat(text_date, ":", text_time, NULL);
750 * @brief Creates local time from GPS lat/long
752 * @returns Localised time and date
754 * GPS lat/long is translated to timezone using ZoneDetect.
755 * GPS UTC is converted to Unix time stamp (seconds since 1970).
756 * The TZ environment variable is set to the relevant timezone
757 * and the Unix timestamp converted to local time using locale.
758 * If the conversion fails, unformatted UTC is returned.
760 static gchar *exif_build_formatted_localtime(ExifData *exif)
765 GError *error = NULL;
766 gchar *time_zone_image;
767 gchar *time_zone_org;
771 gchar *exif_date_time = NULL;
772 gchar *timezone = NULL;
773 gchar *countryname = NULL;
774 gchar *countryalpha2 = NULL;
776 if (exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2))
778 time_zone_image = g_strconcat("TZ=", timezone, NULL);
779 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
782 memset(&tm_utc, 0, sizeof(tm_utc));
783 if (exif_date_time && strptime(exif_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
785 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
786 putenv(time_zone_image); // Switch to destination time zone
788 tm_local = localtime(&stamp);
790 /* Convert to localtime using locale */
791 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
794 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
797 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
802 g_free(exif_date_time);
803 exif_date_time = g_strdup(tmp);
808 putenv(time_zone_org);
810 g_free(time_zone_image);
811 g_free(time_zone_org);
816 g_free(countryalpha2);
818 return exif_date_time;
822 * @brief Gets timezone from GPS lat/long
824 * @returns Timezone string in the form "Europe/London"
828 static gchar *exif_build_formatted_timezone(ExifData *exif)
830 gchar *time_zone = NULL;
831 gchar *exif_date_time = NULL;
832 gchar *timezone = NULL;
833 gchar *countryname = NULL;
834 gchar *countryalpha2 = NULL;
836 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
838 g_free(exif_date_time);
840 g_free(countryalpha2);
846 * @brief Gets countryname from GPS lat/long
848 * @returns Countryname string
852 static gchar *exif_build_formatted_countryname(ExifData *exif)
854 gchar *exif_date_time = NULL;
855 gchar *timezone = NULL;
856 gchar *countryname = NULL;
857 gchar *countryalpha2 = NULL;
859 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
861 g_free(exif_date_time);
863 g_free(countryalpha2);
869 * @brief Gets two-letter country code from GPS lat/long
871 * @returns Countryalpha2 string
875 static gchar *exif_build_formatted_countrycode(ExifData *exif)
877 gchar *exif_date_time = NULL;
878 gchar *timezone = NULL;
879 gchar *countryname = NULL;
880 gchar *countryalpha2 = NULL;
882 exif_build_tz_data(exif, &exif_date_time, &timezone, &countryname, &countryalpha2);
884 g_free(exif_date_time);
888 return countryalpha2;
891 static gchar *exif_build_formatted_star_rating(ExifData *exif)
895 exif_get_integer(exif, "Xmp.xmp.Rating", &n);
897 return convert_rating_to_stars(n);
900 /* List of custom formatted pseudo-exif tags */
901 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
903 ExifFormattedText ExifFormattedList[] = {
904 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
905 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
906 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
907 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
908 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
909 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
910 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
911 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
912 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
913 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
914 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
915 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
916 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
917 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
918 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
919 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
920 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
921 EXIF_FORMATTED_TAG(countryname, N_("Country name")),
922 EXIF_FORMATTED_TAG(countrycode, N_("Country code")),
923 EXIF_FORMATTED_TAG(star_rating, N_("Star rating")),
924 {"file.size", N_("File size"), NULL},
925 {"file.date", N_("File date"), NULL},
926 {"file.mode", N_("File mode"), NULL},
927 {"file.ctime", N_("File ctime"), NULL},
928 {"file.owner", N_("File owner"), NULL},
929 {"file.group", N_("File group"), NULL},
930 {"file.link", N_("File link"), NULL},
931 {"file.class", N_("File class"), NULL},
935 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
937 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
941 if (key_valid) *key_valid = TRUE;
943 key += EXIF_FORMATTED_LEN;
944 for (i = 0; ExifFormattedList[i].key; i++)
945 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
946 return ExifFormattedList[i].build_func(exif);
949 if (key_valid) *key_valid = FALSE;
953 gchar *exif_get_description_by_key(const gchar *key)
955 if (!key) return NULL;
957 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
958 strncmp(key, "file.", 5) == 0)
962 for (i = 0; ExifFormattedList[i].key; i++)
963 if (strcmp(key, ExifFormattedList[i].key) == 0)
964 return g_strdup(_(ExifFormattedList[i].description));
967 return exif_get_tag_description_by_key(key);
970 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
974 item = exif_get_item(exif, key);
975 return exif_item_get_integer(item, value);
978 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
982 item = exif_get_item(exif, key);
983 return exif_item_get_rational(item, sign, 0);
986 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
992 if (!key) return NULL;
994 text = exif_get_formatted_by_key(exif, key, &key_valid);
995 if (key_valid) return text;
997 item = exif_get_item(exif, key);
998 if (item) return exif_item_get_data_as_text(item);
1004 static FileCacheData *exif_cache;
1006 void exif_release_cb(FileData *fd)
1008 exif_free(fd->exif);
1012 void exif_init_cache(void)
1014 g_assert(!exif_cache);
1015 exif_cache = file_cache_new(exif_release_cb, 4);
1018 ExifData *exif_read_fd(FileData *fd)
1020 gchar *sidecar_path;
1022 if (!exif_cache) exif_init_cache();
1024 if (!fd) return NULL;
1026 if (file_cache_get(exif_cache, fd)) return fd->exif;
1027 g_assert(fd->exif == NULL);
1029 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
1030 * not writable directly, thus it should contain the most up-to-date version */
1031 sidecar_path = NULL;
1034 /* we are not able to handle XMP sidecars without exiv2 */
1035 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
1037 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
1040 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
1042 g_free(sidecar_path);
1043 file_cache_put(exif_cache, fd, 1);
1048 void exif_free_fd(FileData *fd, ExifData *exif)
1051 g_assert(fd->exif == exif);
1054 /* embedded icc in jpeg */
1056 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1058 guint seg_offset = 0;
1059 guint seg_length = 0;
1060 guint chunk_offset[255];
1061 guint chunk_length[255];
1062 guint chunk_count = 0;
1064 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1065 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1066 NN = segment number for data
1067 TT = total number of ICC segments (TT in each ICC segment should match)
1070 while (jpeg_segment_find(data + seg_offset + seg_length,
1071 size - seg_offset - seg_length,
1073 "ICC_PROFILE\x00", 12,
1074 &seg_offset, &seg_length))
1079 if (seg_length < 14) return FALSE;
1081 chunk_num = data[seg_offset + 12];
1082 chunk_tot = data[seg_offset + 13];
1084 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1086 if (chunk_count == 0)
1090 chunk_count = (guint)chunk_tot;
1091 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1092 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1095 if (chunk_tot != chunk_count ||
1096 chunk_num > chunk_count) return FALSE;
1099 chunk_offset[chunk_num] = seg_offset + 14;
1100 chunk_length[chunk_num] = seg_length - 14;
1103 if (chunk_count > 0)
1106 guint cp_length = 0;
1109 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1110 cp_data = g_malloc(cp_length);
1112 for (i = 0; i < chunk_count; i++)
1114 if (chunk_offset[i] == 0)
1116 /* error, we never saw this chunk */
1120 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1122 DEBUG_1("Found embedded icc profile in jpeg");
1123 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1132 *-------------------------------------------------------------------
1134 * it is here because it shares tag neming infrastructure with exif
1135 * we should probably not invest too much effort into this because
1136 * new exiv2 will support the same functionality
1137 * http://dev.exiv2.org/issues/show/505
1138 *-------------------------------------------------------------------
1141 static gchar *mode_number(mode_t m)
1143 gint mb, mu, mg, mo;
1146 mb = mu = mg = mo = 0;
1148 if (m & S_ISUID) mb |= 4;
1149 if (m & S_ISGID) mb |= 2;
1150 if (m & S_ISVTX) mb |= 1;
1152 if (m & S_IRUSR) mu |= 4;
1153 if (m & S_IWUSR) mu |= 2;
1154 if (m & S_IXUSR) mu |= 1;
1156 if (m & S_IRGRP) mg |= 4;
1157 if (m & S_IWGRP) mg |= 2;
1158 if (m & S_IXGRP) mg |= 1;
1160 if (m & S_IROTH) mo |= 4;
1161 if (m & S_IWOTH) mo |= 2;
1162 if (m & S_IXOTH) mo |= 1;
1164 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1165 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1166 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1167 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1168 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1169 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1170 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1171 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1172 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1175 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1178 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
1180 if (strcmp(key, "file.size") == 0)
1182 return g_strdup_printf("%ld", (long)fd->size);
1184 if (strcmp(key, "file.date") == 0)
1186 return g_strdup(text_from_time(fd->date));
1188 if (strcmp(key, "file.mode") == 0)
1190 return mode_number(fd->mode);
1192 if (strcmp(key, "file.ctime") == 0)
1194 return g_strdup(text_from_time(fd->cdate));
1196 if (strcmp(key, "file.class") == 0)
1198 return g_strdup(format_class_list[fd->format_class]);
1200 if (strcmp(key, "file.owner") == 0)
1202 return g_strdup(fd->owner);
1204 if (strcmp(key, "file.group") == 0)
1206 return g_strdup(fd->group);
1208 if (strcmp(key, "file.link") == 0)
1210 return g_strdup(fd->sym_link);
1212 return g_strdup("");
1216 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */