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"
61 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
63 if (!r || r->den == 0.0) return 0.0;
65 if (sign) return (gdouble)((gint)r->num) / (gdouble)((gint)r->den);
66 return (gdouble)r->num / r->den;
69 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
74 r = exif_get_rational(exif, key, &sign);
75 return exif_rational_to_double(r, sign);
78 static GString *append_comma_text(GString *string, const gchar *text)
80 string = g_string_append(string, ", ");
81 string = g_string_append(string, text);
86 static gchar *remove_common_prefix(gchar *s, gchar *t)
90 if (!s || !t) return t;
92 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
96 if (s[i-1] == ' ' || !s[i])
105 static gdouble get_crop_factor(ExifData *exif)
107 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
108 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
109 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
112 gdouble xsize, ysize, size, ratio;
114 if (xres == 0.0 || yres == 0.0) return 0.0;
116 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
117 if (res_unit < 1 || res_unit > 5) return 0.0;
119 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
120 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
122 xsize = w * res_unit_tbl[res_unit] / xres;
123 ysize = h * res_unit_tbl[res_unit] / yres;
125 ratio = xsize / ysize;
127 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
129 size = sqrt(xsize * xsize + ysize * ysize);
131 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
133 return sqrt(36*36+24*24) / size;
137 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
139 gint str_len = strlen(str);
141 if (suffix_len < 0) suffix_len = strlen(suffix);
142 if (str_len < suffix_len) return FALSE;
144 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
145 str[str_len - suffix_len] = '\0';
150 static gchar *exif_build_formatted_Camera(ExifData *exif)
153 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
154 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
155 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
163 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
164 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
165 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
175 g_strstrip(software);
177 /* remove superfluous spaces (pentax K100D) */
178 for (i = 0, j = 0; software[i]; i++, j++)
180 if (software[i] == ' ' && software[i + 1] == ' ')
182 if (i != j) software[j] = software[i];
187 model2 = remove_common_prefix(make, model);
188 software2 = remove_common_prefix(model2, software);
190 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
191 (model2) ? model2 : "",
192 (software2 && (make || model2)) ? " (" : "",
193 (software2) ? software2 : "",
194 (software2 && (make || model2)) ? ")" : "");
202 static gchar *exif_build_formatted_DateTime(ExifData *exif)
204 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
205 gchar *subsec = NULL;
210 GError *error = NULL;
214 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
218 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
219 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
222 /* Convert the stuff into a tm struct */
223 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
224 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
226 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
229 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
232 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
238 text = g_strdup(tmp);
246 text = g_strconcat(tmp, ".", subsec, NULL);
253 static gchar *exif_build_formatted_DateTimeDigitized(ExifData *exif)
255 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeDigitized");
256 gchar *subsec = NULL;
261 GError *error = NULL;
265 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeDigitized");
269 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
270 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
273 /* Convert the stuff into a tm struct */
274 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
275 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
277 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
280 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
283 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
289 text = g_strdup(tmp);
297 text = g_strconcat(tmp, ".", subsec, NULL);
304 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
308 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
309 if (r && r->num && r->den)
311 gdouble n = (gdouble)r->den / (gdouble)r->num;
312 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
313 n > 1.0 ? n : 1.0 / n);
315 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
316 if (r && r->num && r->den)
318 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
320 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
321 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
323 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
324 n > 1.0 ? floor(n) : 1.0 / n);
329 static gchar *exif_build_formatted_Aperture(ExifData *exif)
333 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
334 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
335 if (n == 0.0) return NULL;
337 return g_strdup_printf("f/%.1f", n);
340 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
346 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
349 n = exif_rational_to_double(r, sign);
350 return g_strdup_printf("%+.1f", n);
353 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
357 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
358 if (n == 0.0) return NULL;
359 return g_strdup_printf("%.0f mm", n);
362 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
367 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
369 return g_strdup_printf("%d mm", n);
372 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
373 if (f == 0.0) return NULL;
375 c = get_crop_factor(exif);
376 if (c == 0.0) return NULL;
378 return g_strdup_printf("%.0f mm", f * c);
381 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
385 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
386 /* kodak may set this instead */
387 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
391 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
397 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
400 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
401 if ((glong)r->num == 0) return g_strdup(_("unknown"));
403 n = exif_rational_to_double(r, sign);
404 if (n == 0.0) return _("unknown");
405 return g_strdup_printf("%.3f m", n);
408 static gchar *exif_build_formatted_Flash(ExifData *exif)
410 /* grr, flash is a bitmask... */
416 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
418 /* Exif 2.1 only defines first 3 bits */
419 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
421 /* must be Exif 2.2 */
422 string = g_string_new("");
424 /* flash fired (bit 0) */
425 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
427 /* flash mode (bits 3, 4) */
429 if (v) string = append_comma_text(string, _("mode:"));
433 string = g_string_append(string, _("on"));
436 string = g_string_append(string, _("off"));
439 string = g_string_append(string, _("auto"));
443 /* return light (bits 1, 2) */
445 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
446 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
448 /* we ignore flash function (bit 5) */
450 /* red-eye (bit 6) */
451 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
454 g_string_free(string, FALSE);
458 static gchar *exif_build_formatted_Resolution(ExifData *exif)
460 ExifRational *rx, *ry;
464 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
465 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
466 if (!rx || !ry) return NULL;
468 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
469 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
470 ry->den ? (gdouble)ry->num / ry->den : 1.0,
471 _("dot"), (units) ? units : _("unknown"));
477 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
480 cmsUInt8Number profileID[17];
482 const gchar *name = "";
483 const gchar *source = "";
484 guchar *profile_data;
487 profile_data = exif_get_color_profile(exif, &profile_len);
491 gchar *interop_index;
493 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
494 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
495 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
500 source = "ColorSpace";
502 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
504 name = _("AdobeRGB");
505 source = (cs == 2) ? "ColorSpace" : "Iop";
508 g_free(interop_index);
512 source = _("embedded");
518 profile = cmsOpenProfileFromMem(profile_data, profile_len);
522 profileID[16] = '\0';
523 cmsGetHeaderProfileID(profile, profileID);
524 name = (gchar *) profileID;
526 name = (gchar *) cmsTakeProductName(profile);
528 cmsCloseProfile(profile);
530 g_free(profile_data);
534 if (name[0] == 0 && source[0] == 0) return NULL;
535 return g_strdup_printf("%s (%s)", name, source);
538 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
548 string = g_string_new("");
550 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
551 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
555 for (i = 0; i < exif_item_get_elements(item); i++)
557 value = exif_item_get_rational(item, NULL, i);
558 if (value && value->num && value->den)
559 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
562 p2 = (gint)((p - p1)*60);
563 p3 = ((p - p1)*60 - p2)*60;
565 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
566 } // if (item && ref)
568 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
569 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
573 for (i = 0; i < exif_item_get_elements(item); i++)
575 value = exif_item_get_rational(item, NULL, i);
576 if (value && value->num && value->den)
577 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
580 p2 = (gint)((p - p1)*60);
581 p3 = ((p - p1)*60 - p2)*60;
583 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
584 } // if (item && ref)
587 g_string_free(string, FALSE);
590 } // static gchar *exif_build_forma...
592 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
599 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
600 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
602 if (!r || !item) return NULL;
604 alt = exif_rational_to_double(r, 0);
605 exif_item_get_integer(item, &ref);
607 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
611 /* List of custom formatted pseudo-exif tags */
612 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
614 ExifFormattedText ExifFormattedList[] = {
615 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
616 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
617 EXIF_FORMATTED_TAG(DateTimeDigitized, N_("DateDigitized")),
618 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
619 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
620 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
621 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
622 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
623 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
624 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
625 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
626 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
627 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
628 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
629 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
630 {"file.size", N_("File size"), NULL},
631 {"file.date", N_("File date"), NULL},
632 {"file.mode", N_("File mode"), NULL},
636 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
638 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
642 if (key_valid) *key_valid = TRUE;
644 key += EXIF_FORMATTED_LEN;
645 for (i = 0; ExifFormattedList[i].key; i++)
646 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
647 return ExifFormattedList[i].build_func(exif);
650 if (key_valid) *key_valid = FALSE;
654 gchar *exif_get_description_by_key(const gchar *key)
656 if (!key) return NULL;
658 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
659 strncmp(key, "file.", 5) == 0)
663 for (i = 0; ExifFormattedList[i].key; i++)
664 if (strcmp(key, ExifFormattedList[i].key) == 0)
665 return g_strdup(_(ExifFormattedList[i].description));
668 return exif_get_tag_description_by_key(key);
671 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
675 item = exif_get_item(exif, key);
676 return exif_item_get_integer(item, value);
679 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
683 item = exif_get_item(exif, key);
684 return exif_item_get_rational(item, sign, 0);
687 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
693 if (!key) return NULL;
695 text = exif_get_formatted_by_key(exif, key, &key_valid);
696 if (key_valid) return text;
698 item = exif_get_item(exif, key);
699 if (item) return exif_item_get_data_as_text(item);
705 static FileCacheData *exif_cache;
707 void exif_release_cb(FileData *fd)
713 void exif_init_cache(void)
715 g_assert(!exif_cache);
716 exif_cache = file_cache_new(exif_release_cb, 4);
719 ExifData *exif_read_fd(FileData *fd)
723 if (!exif_cache) exif_init_cache();
725 if (!fd) return NULL;
727 if (file_cache_get(exif_cache, fd)) return fd->exif;
728 g_assert(fd->exif == NULL);
730 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
731 * not writable directly, thus it should contain the most up-to-date version */
735 /* we are not able to handle XMP sidecars without exiv2 */
736 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
738 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
741 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
743 g_free(sidecar_path);
744 file_cache_put(exif_cache, fd, 1);
749 void exif_free_fd(FileData *fd, ExifData *exif)
752 g_assert(fd->exif == exif);
755 /* embedded icc in jpeg */
757 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
759 guint seg_offset = 0;
760 guint seg_length = 0;
761 guint chunk_offset[255];
762 guint chunk_length[255];
763 guint chunk_count = 0;
765 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
766 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
767 NN = segment number for data
768 TT = total number of ICC segments (TT in each ICC segment should match)
771 while (jpeg_segment_find(data + seg_offset + seg_length,
772 size - seg_offset - seg_length,
774 "ICC_PROFILE\x00", 12,
775 &seg_offset, &seg_length))
780 if (seg_length < 14) return FALSE;
782 chunk_num = data[seg_offset + 12];
783 chunk_tot = data[seg_offset + 13];
785 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
787 if (chunk_count == 0)
791 chunk_count = (guint)chunk_tot;
792 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
793 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
796 if (chunk_tot != chunk_count ||
797 chunk_num > chunk_count) return FALSE;
800 chunk_offset[chunk_num] = seg_offset + 14;
801 chunk_length[chunk_num] = seg_length - 14;
810 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
811 cp_data = g_malloc(cp_length);
813 for (i = 0; i < chunk_count; i++)
815 if (chunk_offset[i] == 0)
817 /* error, we never saw this chunk */
821 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
823 DEBUG_1("Found embedded icc profile in jpeg");
824 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
833 *-------------------------------------------------------------------
835 * it is here because it shares tag neming infrastructure with exif
836 * we should probably not invest too much effort into this because
837 * new exiv2 will support the same functionality
838 * http://dev.exiv2.org/issues/show/505
839 *-------------------------------------------------------------------
842 static gchar *mode_number(mode_t m)
847 mb = mu = mg = mo = 0;
849 if (m & S_ISUID) mb |= 4;
850 if (m & S_ISGID) mb |= 2;
851 if (m & S_ISVTX) mb |= 1;
853 if (m & S_IRUSR) mu |= 4;
854 if (m & S_IWUSR) mu |= 2;
855 if (m & S_IXUSR) mu |= 1;
857 if (m & S_IRGRP) mg |= 4;
858 if (m & S_IWGRP) mg |= 2;
859 if (m & S_IXGRP) mg |= 1;
861 if (m & S_IROTH) mo |= 4;
862 if (m & S_IWOTH) mo |= 2;
863 if (m & S_IXOTH) mo |= 1;
865 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
866 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
867 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
868 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
869 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
870 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
871 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
872 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
873 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
876 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
879 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
881 if (strcmp(key, "file.size") == 0)
883 return g_strdup_printf("%ld", (long)fd->size);
885 if (strcmp(key, "file.date") == 0)
887 return g_strdup(text_from_time(fd->date));
889 if (strcmp(key, "file.mode") == 0)
891 return mode_number(fd->mode);
897 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */