4 * Copyright (C) 2008 - 2010 The Geeqie Team
18 #include <sys/types.h>
24 /*** color support enabled ***/
26 #ifdef HAVE_LCMS_LCMS_H
27 #include <lcms/lcms.h>
41 #include "filefilter.h"
42 #include "filecache.h"
43 #include "format_raw.h"
44 #include "ui_fileops.h"
48 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
50 if (!r || r->den == 0.0) return 0.0;
52 if (sign) return (gdouble)((gint)r->num) / (gdouble)((gint)r->den);
53 return (gdouble)r->num / r->den;
56 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
61 r = exif_get_rational(exif, key, &sign);
62 return exif_rational_to_double(r, sign);
65 static GString *append_comma_text(GString *string, const gchar *text)
67 string = g_string_append(string, ", ");
68 string = g_string_append(string, text);
73 static gchar *remove_common_prefix(gchar *s, gchar *t)
77 if (!s || !t) return t;
79 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
83 if (s[i-1] == ' ' || !s[i])
92 static gdouble get_crop_factor(ExifData *exif)
94 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
95 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
96 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
99 gdouble xsize, ysize, size, ratio;
101 if (xres == 0.0 || yres == 0.0) return 0.0;
103 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
104 if (res_unit < 1 || res_unit > 5) return 0.0;
106 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
107 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
109 xsize = w * res_unit_tbl[res_unit] / xres;
110 ysize = h * res_unit_tbl[res_unit] / yres;
112 ratio = xsize / ysize;
114 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
116 size = sqrt(xsize * xsize + ysize * ysize);
118 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
120 return sqrt(36*36+24*24) / size;
124 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
126 gint str_len = strlen(str);
128 if (suffix_len < 0) suffix_len = strlen(suffix);
129 if (str_len < suffix_len) return FALSE;
131 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
132 str[str_len - suffix_len] = '\0';
137 static gchar *exif_build_formatted_Camera(ExifData *exif)
140 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
141 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
142 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
150 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
151 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
152 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
162 g_strstrip(software);
164 /* remove superfluous spaces (pentax K100D) */
165 for (i = 0, j = 0; software[i]; i++, j++)
167 if (software[i] == ' ' && software[i + 1] == ' ')
169 if (i != j) software[j] = software[i];
174 model2 = remove_common_prefix(make, model);
175 software2 = remove_common_prefix(model2, software);
177 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
178 (model2) ? model2 : "",
179 (software2 && (make || model2)) ? " (" : "",
180 (software2) ? software2 : "",
181 (software2 && (make || model2)) ? ")" : "");
189 static gchar *exif_build_formatted_DateTime(ExifData *exif)
191 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
192 gchar *subsec = NULL;
197 GError *error = NULL;
201 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
205 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
206 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
209 /* Convert the stuff into a tm struct */
210 memset(&tm, 0, sizeof(tm)); /* Uh, strptime could let garbage in tm! */
211 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
213 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
216 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
219 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
225 text = g_strdup(tmp);
233 text = g_strconcat(tmp, ".", subsec, NULL);
240 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
244 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
245 if (r && r->num && r->den)
247 gdouble n = (gdouble)r->den / (gdouble)r->num;
248 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
249 n > 1.0 ? n : 1.0 / n);
251 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
252 if (r && r->num && r->den)
254 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
256 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
257 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
259 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
260 n > 1.0 ? floor(n) : 1.0 / n);
265 static gchar *exif_build_formatted_Aperture(ExifData *exif)
269 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
270 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
271 if (n == 0.0) return NULL;
273 return g_strdup_printf("f/%.1f", n);
276 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
282 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
285 n = exif_rational_to_double(r, sign);
286 return g_strdup_printf("%+.1f", n);
289 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
293 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
294 if (n == 0.0) return NULL;
295 return g_strdup_printf("%.0f mm", n);
298 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
303 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
305 return g_strdup_printf("%d mm", n);
308 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
309 if (f == 0.0) return NULL;
311 c = get_crop_factor(exif);
312 if (c == 0.0) return NULL;
314 return g_strdup_printf("%.0f mm", f * c);
317 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
321 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
322 /* kodak may set this instead */
323 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
327 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
333 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
336 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
337 if ((glong)r->num == 0) return g_strdup(_("unknown"));
339 n = exif_rational_to_double(r, sign);
340 if (n == 0.0) return _("unknown");
341 return g_strdup_printf("%.3f m", n);
344 static gchar *exif_build_formatted_Flash(ExifData *exif)
346 /* grr, flash is a bitmask... */
352 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
354 /* Exif 2.1 only defines first 3 bits */
355 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
357 /* must be Exif 2.2 */
358 string = g_string_new("");
360 /* flash fired (bit 0) */
361 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
363 /* flash mode (bits 3, 4) */
365 if (v) string = append_comma_text(string, _("mode:"));
369 string = g_string_append(string, _("on"));
372 string = g_string_append(string, _("off"));
375 string = g_string_append(string, _("auto"));
379 /* return light (bits 1, 2) */
381 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
382 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
384 /* we ignore flash function (bit 5) */
386 /* red-eye (bit 6) */
387 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
390 g_string_free(string, FALSE);
394 static gchar *exif_build_formatted_Resolution(ExifData *exif)
396 ExifRational *rx, *ry;
400 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
401 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
402 if (!rx || !ry) return NULL;
404 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
405 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
406 ry->den ? (gdouble)ry->num / ry->den : 1.0,
407 _("dot"), (units) ? units : _("unknown"));
413 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
415 const gchar *name = "";
416 const gchar *source = "";
417 guchar *profile_data;
420 profile_data = exif_get_color_profile(exif, &profile_len);
424 gchar *interop_index;
426 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
427 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
428 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
433 source = "ColorSpace";
435 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
437 name = _("AdobeRGB");
438 source = (cs == 2) ? "ColorSpace" : "Iop";
441 g_free(interop_index);
445 source = _("embedded");
451 profile = cmsOpenProfileFromMem(profile_data, profile_len);
454 name = cmsTakeProductName(profile);
455 cmsCloseProfile(profile);
457 g_free(profile_data);
461 if (name[0] == 0 && source[0] == 0) return NULL;
462 return g_strdup_printf("%s (%s)", name, source);
465 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
475 string = g_string_new("");
477 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
478 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
482 for (i = 0; i < exif_item_get_elements(item); i++)
484 value = exif_item_get_rational(item, NULL, i);
485 if (value && value->num && value->den)
486 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
489 p2 = (gint)((p - p1)*60);
490 p3 = ((p - p1)*60 - p2)*60;
492 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
493 } // if (item && ref)
495 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
496 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
500 for (i = 0; i < exif_item_get_elements(item); i++)
502 value = exif_item_get_rational(item, NULL, i);
503 if (value && value->num && value->den)
504 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
507 p2 = (gint)((p - p1)*60);
508 p3 = ((p - p1)*60 - p2)*60;
510 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
511 } // if (item && ref)
514 g_string_free(string, FALSE);
517 } // static gchar *exif_build_forma...
519 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
526 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
527 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
529 if (!r || !item) return NULL;
531 alt = exif_rational_to_double(r, 0);
532 exif_item_get_integer(item, &ref);
534 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
538 /* List of custom formatted pseudo-exif tags */
539 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
541 ExifFormattedText ExifFormattedList[] = {
542 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
543 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
544 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
545 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
546 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
547 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
548 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
549 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
550 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
551 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
552 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
553 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
554 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
555 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
556 {"file.size", N_("File size"), NULL},
557 {"file.date", N_("File date"), NULL},
558 {"file.mode", N_("File mode"), NULL},
562 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
564 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
568 if (key_valid) *key_valid = TRUE;
570 key += EXIF_FORMATTED_LEN;
571 for (i = 0; ExifFormattedList[i].key; i++)
572 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
573 return ExifFormattedList[i].build_func(exif);
576 if (key_valid) *key_valid = FALSE;
580 gchar *exif_get_description_by_key(const gchar *key)
582 if (!key) return NULL;
584 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
585 strncmp(key, "file.", 5) == 0)
589 for (i = 0; ExifFormattedList[i].key; i++)
590 if (strcmp(key, ExifFormattedList[i].key) == 0)
591 return g_strdup(_(ExifFormattedList[i].description));
594 return exif_get_tag_description_by_key(key);
597 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
601 item = exif_get_item(exif, key);
602 return exif_item_get_integer(item, value);
605 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
609 item = exif_get_item(exif, key);
610 return exif_item_get_rational(item, sign, 0);
613 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
619 if (!key) return NULL;
621 text = exif_get_formatted_by_key(exif, key, &key_valid);
622 if (key_valid) return text;
624 item = exif_get_item(exif, key);
625 if (item) return exif_item_get_data_as_text(item);
631 static FileCacheData *exif_cache;
633 void exif_release_cb(FileData *fd)
639 void exif_init_cache(void)
642 exif_cache = file_cache_new(exif_release_cb, 4);
645 ExifData *exif_read_fd(FileData *fd)
649 if (!exif_cache) exif_init_cache();
651 if (!fd || !is_readable_file(fd->path)) return NULL;
653 if (file_cache_get(exif_cache, fd)) return fd->exif;
655 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
656 * not writable directly, thus it should contain the most up-to-date version */
660 /* we are not able to handle XMP sidecars without exiv2 */
661 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
663 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
666 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
668 g_free(sidecar_path);
673 void exif_free_fd(FileData *fd, ExifData *exif)
676 g_assert(fd->exif == exif);
678 file_cache_put(exif_cache, fd, 1);
681 /* embedded icc in jpeg */
684 #define JPEG_MARKER 0xFF
685 #define JPEG_MARKER_SOI 0xD8
686 #define JPEG_MARKER_EOI 0xD9
687 #define JPEG_MARKER_APP1 0xE1
688 #define JPEG_MARKER_APP2 0xE2
690 /* jpeg container format:
691 all data markers start with 0XFF
692 2 byte long file start and end markers: 0xFFD8(SOI) and 0XFFD9(EOI)
693 4 byte long data segment markers in format: 0xFFTTSSSSNNN...
694 FF: 1 byte standard marker identifier
696 SSSS: 2 bytes in Motorola byte alignment for length of the data.
697 This value includes these 2 bytes in the count, making actual
698 length of NN... == SSSS - 2.
699 NNN.: the data in this segment
702 gboolean exif_jpeg_segment_find(guchar *data, guint size,
703 guchar app_marker, const gchar *magic, guint magic_len,
704 guint *seg_offset, guint *seg_length)
710 while (marker != app_marker &&
711 marker != JPEG_MARKER_EOI)
716 if (offset + 2 >= size ||
717 data[offset] != JPEG_MARKER) return FALSE;
719 marker = data[offset + 1];
720 if (marker != JPEG_MARKER_SOI &&
721 marker != JPEG_MARKER_EOI)
723 if (offset + 4 >= size) return FALSE;
724 length += ((guint)data[offset + 2] << 8) + data[offset + 3];
728 if (marker == app_marker &&
729 offset + length < size &&
730 length >= 4 + magic_len &&
731 memcmp(data + offset + 4, magic, magic_len) == 0)
733 *seg_offset = offset + 4;
734 *seg_length = length - 4;
741 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
743 guint seg_offset = 0;
744 guint seg_length = 0;
745 guint chunk_offset[255];
746 guint chunk_length[255];
747 guint chunk_count = 0;
749 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
750 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
751 NN = segment number for data
752 TT = total number of ICC segments (TT in each ICC segment should match)
755 while (exif_jpeg_segment_find(data + seg_offset + seg_length,
756 size - seg_offset - seg_length,
758 "ICC_PROFILE\x00", 12,
759 &seg_offset, &seg_length))
764 if (seg_length < 14) return FALSE;
766 chunk_num = data[seg_offset + 12];
767 chunk_tot = data[seg_offset + 13];
769 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
771 if (chunk_count == 0)
775 chunk_count = (guint)chunk_tot;
776 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
777 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
780 if (chunk_tot != chunk_count ||
781 chunk_num > chunk_count) return FALSE;
784 chunk_offset[chunk_num] = seg_offset + 14;
785 chunk_length[chunk_num] = seg_length - 14;
794 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
795 cp_data = g_malloc(cp_length);
797 for (i = 0; i < chunk_count; i++)
799 if (chunk_offset[i] == 0)
801 /* error, we never saw this chunk */
805 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
807 DEBUG_1("Found embedded icc profile in jpeg");
808 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
817 *-------------------------------------------------------------------
819 * it is here because it shares tag neming infrastructure with exif
820 * we should probably not invest too much effort into this because
821 * new exiv2 will support the same functionality
822 * http://dev.exiv2.org/issues/show/505
823 *-------------------------------------------------------------------
826 static gchar *mode_number(mode_t m)
831 mb = mu = mg = mo = 0;
833 if (m & S_ISUID) mb |= 4;
834 if (m & S_ISGID) mb |= 2;
835 if (m & S_ISVTX) mb |= 1;
837 if (m & S_IRUSR) mu |= 4;
838 if (m & S_IWUSR) mu |= 2;
839 if (m & S_IXUSR) mu |= 1;
841 if (m & S_IRGRP) mg |= 4;
842 if (m & S_IWGRP) mg |= 2;
843 if (m & S_IXGRP) mg |= 1;
845 if (m & S_IROTH) mo |= 4;
846 if (m & S_IWOTH) mo |= 2;
847 if (m & S_IXOTH) mo |= 1;
849 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
850 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
851 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
852 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
853 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
854 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
855 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
856 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
857 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
860 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
863 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
865 if (strcmp(key, "file.size") == 0)
867 return g_strdup_printf("%ld", (long)fd->size);
869 if (strcmp(key, "file.date") == 0)
871 return g_strdup(text_from_time(fd->date));
873 if (strcmp(key, "file.mode") == 0)
875 return mode_number(fd->mode);
881 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */