4 * Copyright (C) 2008 - 2012 The Geeqie Team
18 #include <sys/types.h>
24 /*** color support enabled ***/
41 #include "filefilter.h"
42 #include "filecache.h"
43 #include "format_raw.h"
44 #include "ui_fileops.h"
46 #include "jpeg_parser.h"
49 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
51 if (!r || r->den == 0.0) return 0.0;
53 if (sign) return (gdouble)((gint)r->num) / (gdouble)((gint)r->den);
54 return (gdouble)r->num / r->den;
57 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
62 r = exif_get_rational(exif, key, &sign);
63 return exif_rational_to_double(r, sign);
66 static GString *append_comma_text(GString *string, const gchar *text)
68 string = g_string_append(string, ", ");
69 string = g_string_append(string, text);
74 static gchar *remove_common_prefix(gchar *s, gchar *t)
78 if (!s || !t) return t;
80 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
84 if (s[i-1] == ' ' || !s[i])
93 static gdouble get_crop_factor(ExifData *exif)
95 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
96 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
97 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
100 gdouble xsize, ysize, size, ratio;
102 if (xres == 0.0 || yres == 0.0) return 0.0;
104 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
105 if (res_unit < 1 || res_unit > 5) return 0.0;
107 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
108 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
110 xsize = w * res_unit_tbl[res_unit] / xres;
111 ysize = h * res_unit_tbl[res_unit] / yres;
113 ratio = xsize / ysize;
115 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
117 size = sqrt(xsize * xsize + ysize * ysize);
119 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
121 return sqrt(36*36+24*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 = NULL;
198 GError *error = NULL;
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, NULL, NULL, &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_ShutterSpeed(ExifData *exif)
245 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
246 if (r && r->num && r->den)
248 gdouble n = (gdouble)r->den / (gdouble)r->num;
249 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
250 n > 1.0 ? n : 1.0 / n);
252 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
253 if (r && r->num && r->den)
255 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
257 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
258 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
260 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
261 n > 1.0 ? floor(n) : 1.0 / n);
266 static gchar *exif_build_formatted_Aperture(ExifData *exif)
270 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
271 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
272 if (n == 0.0) return NULL;
274 return g_strdup_printf("f/%.1f", n);
277 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
283 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
286 n = exif_rational_to_double(r, sign);
287 return g_strdup_printf("%+.1f", n);
290 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
294 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
295 if (n == 0.0) return NULL;
296 return g_strdup_printf("%.0f mm", n);
299 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
304 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
306 return g_strdup_printf("%d mm", n);
309 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
310 if (f == 0.0) return NULL;
312 c = get_crop_factor(exif);
313 if (c == 0.0) return NULL;
315 return g_strdup_printf("%.0f mm", f * c);
318 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
322 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
323 /* kodak may set this instead */
324 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
328 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
334 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
337 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
338 if ((glong)r->num == 0) return g_strdup(_("unknown"));
340 n = exif_rational_to_double(r, sign);
341 if (n == 0.0) return _("unknown");
342 return g_strdup_printf("%.3f m", n);
345 static gchar *exif_build_formatted_Flash(ExifData *exif)
347 /* grr, flash is a bitmask... */
353 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
355 /* Exif 2.1 only defines first 3 bits */
356 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
358 /* must be Exif 2.2 */
359 string = g_string_new("");
361 /* flash fired (bit 0) */
362 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
364 /* flash mode (bits 3, 4) */
366 if (v) string = append_comma_text(string, _("mode:"));
370 string = g_string_append(string, _("on"));
373 string = g_string_append(string, _("off"));
376 string = g_string_append(string, _("auto"));
380 /* return light (bits 1, 2) */
382 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
383 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
385 /* we ignore flash function (bit 5) */
387 /* red-eye (bit 6) */
388 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
391 g_string_free(string, FALSE);
395 static gchar *exif_build_formatted_Resolution(ExifData *exif)
397 ExifRational *rx, *ry;
401 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
402 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
403 if (!rx || !ry) return NULL;
405 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
406 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
407 ry->den ? (gdouble)ry->num / ry->den : 1.0,
408 _("dot"), (units) ? units : _("unknown"));
414 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
417 cmsUInt8Number profileID[17];
419 const gchar *name = "";
420 const gchar *source = "";
421 guchar *profile_data;
424 profile_data = exif_get_color_profile(exif, &profile_len);
428 gchar *interop_index;
430 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
431 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
432 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
437 source = "ColorSpace";
439 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
441 name = _("AdobeRGB");
442 source = (cs == 2) ? "ColorSpace" : "Iop";
445 g_free(interop_index);
449 source = _("embedded");
455 profile = cmsOpenProfileFromMem(profile_data, profile_len);
459 profileID[16] = '\0';
460 cmsGetHeaderProfileID(profile, profileID);
461 name = (gchar *) profileID;
463 name = (gchar *) cmsTakeProductName(profile);
465 cmsCloseProfile(profile);
467 g_free(profile_data);
471 if (name[0] == 0 && source[0] == 0) return NULL;
472 return g_strdup_printf("%s (%s)", name, source);
475 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
485 string = g_string_new("");
487 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
488 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
492 for (i = 0; i < exif_item_get_elements(item); i++)
494 value = exif_item_get_rational(item, NULL, i);
495 if (value && value->num && value->den)
496 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
499 p2 = (gint)((p - p1)*60);
500 p3 = ((p - p1)*60 - p2)*60;
502 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
503 } // if (item && ref)
505 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
506 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
510 for (i = 0; i < exif_item_get_elements(item); i++)
512 value = exif_item_get_rational(item, NULL, i);
513 if (value && value->num && value->den)
514 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
517 p2 = (gint)((p - p1)*60);
518 p3 = ((p - p1)*60 - p2)*60;
520 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
521 } // if (item && ref)
524 g_string_free(string, FALSE);
527 } // static gchar *exif_build_forma...
529 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
536 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
537 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
539 if (!r || !item) return NULL;
541 alt = exif_rational_to_double(r, 0);
542 exif_item_get_integer(item, &ref);
544 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
548 /* List of custom formatted pseudo-exif tags */
549 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
551 ExifFormattedText ExifFormattedList[] = {
552 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
553 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
554 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
555 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
556 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
557 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
558 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
559 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
560 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
561 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
562 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
563 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
564 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
565 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
566 {"file.size", N_("File size"), NULL},
567 {"file.date", N_("File date"), NULL},
568 {"file.mode", N_("File mode"), NULL},
572 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
574 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
578 if (key_valid) *key_valid = TRUE;
580 key += EXIF_FORMATTED_LEN;
581 for (i = 0; ExifFormattedList[i].key; i++)
582 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
583 return ExifFormattedList[i].build_func(exif);
586 if (key_valid) *key_valid = FALSE;
590 gchar *exif_get_description_by_key(const gchar *key)
592 if (!key) return NULL;
594 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
595 strncmp(key, "file.", 5) == 0)
599 for (i = 0; ExifFormattedList[i].key; i++)
600 if (strcmp(key, ExifFormattedList[i].key) == 0)
601 return g_strdup(_(ExifFormattedList[i].description));
604 return exif_get_tag_description_by_key(key);
607 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
611 item = exif_get_item(exif, key);
612 return exif_item_get_integer(item, value);
615 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
619 item = exif_get_item(exif, key);
620 return exif_item_get_rational(item, sign, 0);
623 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
629 if (!key) return NULL;
631 text = exif_get_formatted_by_key(exif, key, &key_valid);
632 if (key_valid) return text;
634 item = exif_get_item(exif, key);
635 if (item) return exif_item_get_data_as_text(item);
641 static FileCacheData *exif_cache;
643 void exif_release_cb(FileData *fd)
649 void exif_init_cache(void)
651 g_assert(!exif_cache);
652 exif_cache = file_cache_new(exif_release_cb, 4);
655 ExifData *exif_read_fd(FileData *fd)
659 if (!exif_cache) exif_init_cache();
661 if (!fd) return NULL;
663 if (file_cache_get(exif_cache, fd)) return fd->exif;
664 g_assert(fd->exif == NULL);
666 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
667 * not writable directly, thus it should contain the most up-to-date version */
671 /* we are not able to handle XMP sidecars without exiv2 */
672 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
674 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
677 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
679 g_free(sidecar_path);
680 file_cache_put(exif_cache, fd, 1);
685 void exif_free_fd(FileData *fd, ExifData *exif)
688 g_assert(fd->exif == exif);
691 /* embedded icc in jpeg */
693 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
695 guint seg_offset = 0;
696 guint seg_length = 0;
697 guint chunk_offset[255];
698 guint chunk_length[255];
699 guint chunk_count = 0;
701 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
702 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
703 NN = segment number for data
704 TT = total number of ICC segments (TT in each ICC segment should match)
707 while (jpeg_segment_find(data + seg_offset + seg_length,
708 size - seg_offset - seg_length,
710 "ICC_PROFILE\x00", 12,
711 &seg_offset, &seg_length))
716 if (seg_length < 14) return FALSE;
718 chunk_num = data[seg_offset + 12];
719 chunk_tot = data[seg_offset + 13];
721 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
723 if (chunk_count == 0)
727 chunk_count = (guint)chunk_tot;
728 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
729 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
732 if (chunk_tot != chunk_count ||
733 chunk_num > chunk_count) return FALSE;
736 chunk_offset[chunk_num] = seg_offset + 14;
737 chunk_length[chunk_num] = seg_length - 14;
746 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
747 cp_data = g_malloc(cp_length);
749 for (i = 0; i < chunk_count; i++)
751 if (chunk_offset[i] == 0)
753 /* error, we never saw this chunk */
757 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
759 DEBUG_1("Found embedded icc profile in jpeg");
760 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
769 *-------------------------------------------------------------------
771 * it is here because it shares tag neming infrastructure with exif
772 * we should probably not invest too much effort into this because
773 * new exiv2 will support the same functionality
774 * http://dev.exiv2.org/issues/show/505
775 *-------------------------------------------------------------------
778 static gchar *mode_number(mode_t m)
783 mb = mu = mg = mo = 0;
785 if (m & S_ISUID) mb |= 4;
786 if (m & S_ISGID) mb |= 2;
787 if (m & S_ISVTX) mb |= 1;
789 if (m & S_IRUSR) mu |= 4;
790 if (m & S_IWUSR) mu |= 2;
791 if (m & S_IXUSR) mu |= 1;
793 if (m & S_IRGRP) mg |= 4;
794 if (m & S_IWGRP) mg |= 2;
795 if (m & S_IXGRP) mg |= 1;
797 if (m & S_IROTH) mo |= 4;
798 if (m & S_IWOTH) mo |= 2;
799 if (m & S_IXOTH) mo |= 1;
801 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
802 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
803 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
804 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
805 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
806 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
807 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
808 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
809 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
812 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
815 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
817 if (strcmp(key, "file.size") == 0)
819 return g_strdup_printf("%ld", (long)fd->size);
821 if (strcmp(key, "file.date") == 0)
823 return g_strdup(text_from_time(fd->date));
825 if (strcmp(key, "file.mode") == 0)
827 return mode_number(fd->mode);
833 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */