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"
59 #include "zonedetect.h"
62 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
64 if (!r || r->den == 0.0) return 0.0;
66 if (sign) return (gdouble)((gint)r->num) / (gdouble)((gint)r->den);
67 return (gdouble)r->num / r->den;
70 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
75 r = exif_get_rational(exif, key, &sign);
76 return exif_rational_to_double(r, sign);
79 static GString *append_comma_text(GString *string, const gchar *text)
81 string = g_string_append(string, ", ");
82 string = g_string_append(string, text);
87 static gchar *remove_common_prefix(gchar *s, gchar *t)
91 if (!s || !t) return t;
93 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
97 if (s[i-1] == ' ' || !s[i])
106 static gdouble get_crop_factor(ExifData *exif)
108 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
109 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
110 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
113 gdouble xsize, ysize, size, ratio;
115 if (xres == 0.0 || yres == 0.0) return 0.0;
117 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
118 if (res_unit < 1 || res_unit > 5) return 0.0;
120 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
121 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
123 xsize = w * res_unit_tbl[res_unit] / xres;
124 ysize = h * res_unit_tbl[res_unit] / yres;
126 ratio = xsize / ysize;
128 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
130 size = sqrt(xsize * xsize + ysize * ysize);
132 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
134 return sqrt(36*36+24*24) / size;
138 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
140 gint str_len = strlen(str);
142 if (suffix_len < 0) suffix_len = strlen(suffix);
143 if (str_len < suffix_len) return FALSE;
145 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
146 str[str_len - suffix_len] = '\0';
151 static gchar *exif_build_formatted_Camera(ExifData *exif)
154 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
155 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
156 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
164 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
165 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
166 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
176 g_strstrip(software);
178 /* remove superfluous spaces (pentax K100D) */
179 for (i = 0, j = 0; software[i]; i++, j++)
181 if (software[i] == ' ' && software[i + 1] == ' ')
183 if (i != j) software[j] = software[i];
188 model2 = remove_common_prefix(make, model);
189 software2 = remove_common_prefix(model2, software);
191 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
192 (model2) ? model2 : "",
193 (software2 && (make || model2)) ? " (" : "",
194 (software2) ? software2 : "",
195 (software2 && (make || model2)) ? ")" : "");
203 static gchar *exif_build_formatted_DateTime(ExifData *exif)
205 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
206 gchar *subsec = NULL;
211 GError *error = NULL;
215 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
219 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
220 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
223 /* Convert the stuff into a tm struct */
224 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
225 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
227 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
230 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
233 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
239 text = g_strdup(tmp);
247 text = g_strconcat(tmp, ".", subsec, NULL);
254 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
256 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
257 gchar *subsec = NULL;
262 GError *error = NULL;
266 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
270 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
271 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
274 /* Convert the stuff into a tm struct */
275 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
276 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
278 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
281 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
284 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
290 text = g_strdup(tmp);
298 text = g_strconcat(tmp, ".", subsec, NULL);
305 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
309 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
310 if (r && r->num && r->den)
312 gdouble n = (gdouble)r->den / (gdouble)r->num;
313 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
314 n > 1.0 ? n : 1.0 / n);
316 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
317 if (r && r->num && r->den)
319 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
321 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
322 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
324 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
325 n > 1.0 ? floor(n) : 1.0 / n);
330 static gchar *exif_build_formatted_Aperture(ExifData *exif)
334 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
335 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
336 if (n == 0.0) return NULL;
338 return g_strdup_printf("f/%.1f", n);
341 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
347 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
350 n = exif_rational_to_double(r, sign);
351 return g_strdup_printf("%+.1f", n);
354 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
358 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
359 if (n == 0.0) return NULL;
360 return g_strdup_printf("%.0f mm", n);
363 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
368 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
370 return g_strdup_printf("%d mm", n);
373 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
374 if (f == 0.0) return NULL;
376 c = get_crop_factor(exif);
377 if (c == 0.0) return NULL;
379 return g_strdup_printf("%.0f mm", f * c);
382 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
386 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
387 /* kodak may set this instead */
388 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
392 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
398 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
401 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
402 if ((glong)r->num == 0) return g_strdup(_("unknown"));
404 n = exif_rational_to_double(r, sign);
405 if (n == 0.0) return _("unknown");
406 return g_strdup_printf("%.3f m", n);
409 static gchar *exif_build_formatted_Flash(ExifData *exif)
411 /* grr, flash is a bitmask... */
417 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
419 /* Exif 2.1 only defines first 3 bits */
420 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
422 /* must be Exif 2.2 */
423 string = g_string_new("");
425 /* flash fired (bit 0) */
426 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
428 /* flash mode (bits 3, 4) */
430 if (v) string = append_comma_text(string, _("mode:"));
434 string = g_string_append(string, _("on"));
437 string = g_string_append(string, _("off"));
440 string = g_string_append(string, _("auto"));
444 /* return light (bits 1, 2) */
446 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
447 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
449 /* we ignore flash function (bit 5) */
451 /* red-eye (bit 6) */
452 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
455 g_string_free(string, FALSE);
459 static gchar *exif_build_formatted_Resolution(ExifData *exif)
461 ExifRational *rx, *ry;
465 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
466 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
467 if (!rx || !ry) return NULL;
469 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
470 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
471 ry->den ? (gdouble)ry->num / ry->den : 1.0,
472 _("dot"), (units) ? units : _("unknown"));
478 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
481 cmsUInt8Number profileID[17];
483 const gchar *name = "";
484 const gchar *source = "";
485 guchar *profile_data;
488 profile_data = exif_get_color_profile(exif, &profile_len);
492 gchar *interop_index;
494 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
495 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
496 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
501 source = "ColorSpace";
503 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
505 name = _("AdobeRGB");
506 source = (cs == 2) ? "ColorSpace" : "Iop";
509 g_free(interop_index);
513 source = _("embedded");
519 profile = cmsOpenProfileFromMem(profile_data, profile_len);
523 profileID[16] = '\0';
524 cmsGetHeaderProfileID(profile, profileID);
525 name = (gchar *) profileID;
527 name = (gchar *) cmsTakeProductName(profile);
529 cmsCloseProfile(profile);
531 g_free(profile_data);
535 if (name[0] == 0 && source[0] == 0) return NULL;
536 return g_strdup_printf("%s (%s)", name, source);
539 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
549 string = g_string_new("");
551 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
552 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
556 for (i = 0; i < exif_item_get_elements(item); i++)
558 value = exif_item_get_rational(item, NULL, i);
559 if (value && value->num && value->den)
560 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
563 p2 = (gint)((p - p1)*60);
564 p3 = ((p - p1)*60 - p2)*60;
566 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
567 } // if (item && ref)
569 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
570 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
574 for (i = 0; i < exif_item_get_elements(item); i++)
576 value = exif_item_get_rational(item, NULL, i);
577 if (value && value->num && value->den)
578 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
581 p2 = (gint)((p - p1)*60);
582 p3 = ((p - p1)*60 - p2)*60;
584 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
585 } // if (item && ref)
588 g_string_free(string, FALSE);
591 } // static gchar *exif_build_forma...
593 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
600 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
601 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
603 if (!r || !item) return NULL;
605 alt = exif_rational_to_double(r, 0);
606 exif_item_get_integer(item, &ref);
608 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
612 * @brief Extracts timezone from a ZoneDetect search structure
613 * @param results ZoneDetect search structure
614 * @returns Timezone in the form "Europe/London"
616 * Refer to https://github.com/BertoldVdb/ZoneDetect
617 * for structure details
619 static gchar *zd_tz(ZoneDetectResult* results)
621 gchar *timezone = NULL;
622 gchar *timezone_pre = NULL;
623 gchar *timezone_id = NULL;
624 unsigned int index = 0;
631 while(results[index].lookupResult != ZD_LOOKUP_END)
633 if(results[index].data)
635 for(unsigned int i=0; i<results[index].numFields; i++)
637 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneIdPrefix"))
639 timezone_pre = g_strdup(results[index].data[i]);
641 if (g_strstr_len(results[index].fieldNames[i], -1, "TimezoneId"))
643 timezone_id = g_strdup(results[index].data[i]);
650 timezone = g_strconcat(timezone_pre, timezone_id, NULL);
651 g_free(timezone_pre);
657 * @brief Creates local time from GPS lat/long
659 * @returns Localised time and date
661 * GPS lat/long is translated to timezone using ZoneDetect.
662 * GPS UTC is converted to Unix time stamp (seconds since 1970).
663 * The TZ environment variable is set to the relevant timezone
664 * and the Unix timestamp converted to local time using locale.
665 * If the conversion fails, unformatted UTC is returned.
667 static gchar *exif_build_formatted_localtime(ExifData *exif)
671 gchar *text_latitude;
672 gchar *text_longitude;
673 gchar *text_latitude_ref;
674 gchar *text_longitude_ref;
677 gchar *text_date_time = NULL;
681 GError *error = NULL;
687 gchar *time_zone_org;
692 gchar *zone_selected;
694 ZoneDetectResult *results;
696 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
697 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
698 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
699 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
700 text_date = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSDateStamp");
701 text_time = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSTimeStamp");
703 if (text_latitude && text_longitude && text_latitude_ref &&
704 text_longitude_ref && text_date && text_time)
706 text_date_time = g_strconcat(text_date, ":", text_time, NULL);
708 lat_deg = strtok(text_latitude, "deg'");
709 lat_min = strtok(NULL, "deg'");
710 latitude = atof(lat_deg) + atof(lat_min) / 60;
711 if (!g_strcmp0(text_latitude_ref, "South"))
713 latitude = -latitude;
715 lon_deg = strtok(text_longitude, "deg'");
716 lon_min = strtok(NULL, "deg'");
717 longitude = atof(lon_deg) + atof(lon_min) / 60;
718 if (!g_strcmp0(text_longitude_ref, "West"))
720 longitude = -longitude;
723 zd_path = g_build_filename(GQ_BIN_DIR, TIMEZONE_DATABASE, NULL);
724 cd = ZDOpenDatabase(zd_path);
727 results = ZDLookup(cd, latitude, longitude, NULL);
728 zone_selected = zd_tz(results);
729 time_zone = g_strconcat("TZ=", zone_selected, NULL);
730 time_zone_org = g_strconcat("TZ=", getenv("TZ"), NULL);
732 g_free(zone_selected);
734 memset(&tm_utc, 0, sizeof(tm_utc));
735 if (text_date_time && strptime(text_date_time, "%Y:%m:%d:%H:%M:%S", &tm_utc))
737 stamp = mktime(&tm_utc); // Convert the struct to a Unix timestamp
738 putenv(time_zone); // Switch to destination time zone
740 tm_local = localtime(&stamp);
742 /* Convert to localtime using locale */
743 buflen = strftime(buf, sizeof(buf), "%x %X", tm_local);
746 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
749 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
754 g_free(text_date_time);
755 text_date_time = g_strdup(tmp);
760 putenv(time_zone_org);
763 g_free(time_zone_org);
767 log_printf("Error: Init of timezone database %s failed\n", zd_path);
773 g_free(text_latitude);
774 g_free(text_longitude);
775 g_free(text_latitude_ref);
776 g_free(text_longitude_ref);
780 return text_date_time;
784 * @brief Gets timezone from GPS lat/long
786 * @returns Timezone string in the form "Europe/London"
790 static gchar *exif_build_formatted_timezone(ExifData *exif)
794 gchar *text_latitude;
795 gchar *text_longitude;
796 gchar *text_latitude_ref;
797 gchar *text_longitude_ref;
802 gchar *time_zone = NULL;
805 ZoneDetectResult *results;
807 text_latitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitude");
808 text_longitude = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitude");
809 text_latitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
810 text_longitude_ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
812 if (text_latitude && text_longitude && text_latitude_ref &&
815 lat_deg = strtok(text_latitude, "deg'");
816 lat_min = strtok(NULL, "deg'");
817 latitude = atof(lat_deg) + atof(lat_min) / 60;
818 if (g_strcmp0(text_latitude_ref, "South") == 0)
820 latitude = -latitude;
822 lon_deg = strtok(text_longitude, "deg'");
823 lon_min = strtok(NULL, "deg'");
824 longitude = atof(lon_deg) + atof(lon_min) / 60;
825 if (g_strcmp0(text_longitude_ref, "West") == 0)
827 longitude = -longitude;
829 zd_path = g_build_filename(GQ_BIN_DIR, TIMEZONE_DATABASE, NULL);
830 cd = ZDOpenDatabase(zd_path);
833 results = ZDLookup(cd, latitude, longitude, NULL);
834 time_zone = zd_tz(results);
835 ZDFreeResults(results);
839 log_printf("Error: Init of timezone database %s failed\n", zd_path);
845 g_free(text_latitude);
846 g_free(text_longitude);
847 g_free(text_latitude_ref);
848 g_free(text_longitude_ref);
853 /* List of custom formatted pseudo-exif tags */
854 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
856 ExifFormattedText ExifFormattedList[] = {
857 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
858 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
859 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
860 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
861 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
862 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
863 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
864 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
865 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
866 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
867 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
868 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
869 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
870 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
871 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
872 EXIF_FORMATTED_TAG(localtime, N_("Local time")),
873 EXIF_FORMATTED_TAG(timezone, N_("Time zone")),
874 {"file.size", N_("File size"), NULL},
875 {"file.date", N_("File date"), NULL},
876 {"file.mode", N_("File mode"), NULL},
880 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
882 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
886 if (key_valid) *key_valid = TRUE;
888 key += EXIF_FORMATTED_LEN;
889 for (i = 0; ExifFormattedList[i].key; i++)
890 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
891 return ExifFormattedList[i].build_func(exif);
894 if (key_valid) *key_valid = FALSE;
898 gchar *exif_get_description_by_key(const gchar *key)
900 if (!key) return NULL;
902 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
903 strncmp(key, "file.", 5) == 0)
907 for (i = 0; ExifFormattedList[i].key; i++)
908 if (strcmp(key, ExifFormattedList[i].key) == 0)
909 return g_strdup(_(ExifFormattedList[i].description));
912 return exif_get_tag_description_by_key(key);
915 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
919 item = exif_get_item(exif, key);
920 return exif_item_get_integer(item, value);
923 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
927 item = exif_get_item(exif, key);
928 return exif_item_get_rational(item, sign, 0);
931 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
937 if (!key) return NULL;
939 text = exif_get_formatted_by_key(exif, key, &key_valid);
940 if (key_valid) return text;
942 item = exif_get_item(exif, key);
943 if (item) return exif_item_get_data_as_text(item);
949 static FileCacheData *exif_cache;
951 void exif_release_cb(FileData *fd)
957 void exif_init_cache(void)
959 g_assert(!exif_cache);
960 exif_cache = file_cache_new(exif_release_cb, 4);
963 ExifData *exif_read_fd(FileData *fd)
967 if (!exif_cache) exif_init_cache();
969 if (!fd) return NULL;
971 if (file_cache_get(exif_cache, fd)) return fd->exif;
972 g_assert(fd->exif == NULL);
974 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
975 * not writable directly, thus it should contain the most up-to-date version */
979 /* we are not able to handle XMP sidecars without exiv2 */
980 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
982 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
985 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
987 g_free(sidecar_path);
988 file_cache_put(exif_cache, fd, 1);
993 void exif_free_fd(FileData *fd, ExifData *exif)
996 g_assert(fd->exif == exif);
999 /* embedded icc in jpeg */
1001 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
1003 guint seg_offset = 0;
1004 guint seg_length = 0;
1005 guint chunk_offset[255];
1006 guint chunk_length[255];
1007 guint chunk_count = 0;
1009 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
1010 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
1011 NN = segment number for data
1012 TT = total number of ICC segments (TT in each ICC segment should match)
1015 while (jpeg_segment_find(data + seg_offset + seg_length,
1016 size - seg_offset - seg_length,
1018 "ICC_PROFILE\x00", 12,
1019 &seg_offset, &seg_length))
1024 if (seg_length < 14) return FALSE;
1026 chunk_num = data[seg_offset + 12];
1027 chunk_tot = data[seg_offset + 13];
1029 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
1031 if (chunk_count == 0)
1035 chunk_count = (guint)chunk_tot;
1036 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
1037 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
1040 if (chunk_tot != chunk_count ||
1041 chunk_num > chunk_count) return FALSE;
1044 chunk_offset[chunk_num] = seg_offset + 14;
1045 chunk_length[chunk_num] = seg_length - 14;
1048 if (chunk_count > 0)
1051 guint cp_length = 0;
1054 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
1055 cp_data = g_malloc(cp_length);
1057 for (i = 0; i < chunk_count; i++)
1059 if (chunk_offset[i] == 0)
1061 /* error, we never saw this chunk */
1065 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
1067 DEBUG_1("Found embedded icc profile in jpeg");
1068 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
1077 *-------------------------------------------------------------------
1079 * it is here because it shares tag neming infrastructure with exif
1080 * we should probably not invest too much effort into this because
1081 * new exiv2 will support the same functionality
1082 * http://dev.exiv2.org/issues/show/505
1083 *-------------------------------------------------------------------
1086 static gchar *mode_number(mode_t m)
1088 gint mb, mu, mg, mo;
1091 mb = mu = mg = mo = 0;
1093 if (m & S_ISUID) mb |= 4;
1094 if (m & S_ISGID) mb |= 2;
1095 if (m & S_ISVTX) mb |= 1;
1097 if (m & S_IRUSR) mu |= 4;
1098 if (m & S_IWUSR) mu |= 2;
1099 if (m & S_IXUSR) mu |= 1;
1101 if (m & S_IRGRP) mg |= 4;
1102 if (m & S_IWGRP) mg |= 2;
1103 if (m & S_IXGRP) mg |= 1;
1105 if (m & S_IROTH) mo |= 4;
1106 if (m & S_IWOTH) mo |= 2;
1107 if (m & S_IXOTH) mo |= 1;
1109 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
1110 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
1111 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
1112 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
1113 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
1114 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
1115 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
1116 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
1117 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
1120 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
1123 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
1125 if (strcmp(key, "file.size") == 0)
1127 return g_strdup_printf("%ld", (long)fd->size);
1129 if (strcmp(key, "file.date") == 0)
1131 return g_strdup(text_from_time(fd->date));
1133 if (strcmp(key, "file.mode") == 0)
1135 return mode_number(fd->mode);
1137 return g_strdup("");
1141 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */