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 if (text && strptime(text, "%Y:%m:%d %H:%M:%S", &tm))
212 buflen = strftime(buf, sizeof(buf), "%x %X", &tm);
215 tmp = g_locale_to_utf8(buf, buflen, NULL, NULL, &error);
218 log_printf("Error converting locale strftime to UTF-8: %s\n", error->message);
224 text = g_strdup(tmp);
232 text = g_strconcat(tmp, ".", subsec, NULL);
239 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
243 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
244 if (r && r->num && r->den)
246 gdouble n = (gdouble)r->den / (gdouble)r->num;
247 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
248 n > 1.0 ? n : 1.0 / n);
250 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
251 if (r && r->num && r->den)
253 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
255 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
256 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
258 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
259 n > 1.0 ? floor(n) : 1.0 / n);
264 static gchar *exif_build_formatted_Aperture(ExifData *exif)
268 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
269 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
270 if (n == 0.0) return NULL;
272 return g_strdup_printf("f/%.1f", n);
275 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
281 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
284 n = exif_rational_to_double(r, sign);
285 return g_strdup_printf("%+.1f", n);
288 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
292 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
293 if (n == 0.0) return NULL;
294 return g_strdup_printf("%.0f mm", n);
297 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
302 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
304 return g_strdup_printf("%d mm", n);
307 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
308 if (f == 0.0) return NULL;
310 c = get_crop_factor(exif);
311 if (c == 0.0) return NULL;
313 return g_strdup_printf("%.0f mm", f * c);
316 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
320 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
321 /* kodak may set this instead */
322 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
326 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
332 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
335 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
336 if ((glong)r->num == 0) return g_strdup(_("unknown"));
338 n = exif_rational_to_double(r, sign);
339 if (n == 0.0) return _("unknown");
340 return g_strdup_printf("%.3f m", n);
343 static gchar *exif_build_formatted_Flash(ExifData *exif)
345 /* grr, flash is a bitmask... */
351 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
353 /* Exif 2.1 only defines first 3 bits */
354 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
356 /* must be Exif 2.2 */
357 string = g_string_new("");
359 /* flash fired (bit 0) */
360 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
362 /* flash mode (bits 3, 4) */
364 if (v) string = append_comma_text(string, _("mode:"));
368 string = g_string_append(string, _("on"));
371 string = g_string_append(string, _("off"));
374 string = g_string_append(string, _("auto"));
378 /* return light (bits 1, 2) */
380 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
381 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
383 /* we ignore flash function (bit 5) */
385 /* red-eye (bit 6) */
386 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
389 g_string_free(string, FALSE);
393 static gchar *exif_build_formatted_Resolution(ExifData *exif)
395 ExifRational *rx, *ry;
399 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
400 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
401 if (!rx || !ry) return NULL;
403 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
404 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
405 ry->den ? (gdouble)ry->num / ry->den : 1.0,
406 _("dot"), (units) ? units : _("unknown"));
412 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
414 const gchar *name = "";
415 const gchar *source = "";
416 guchar *profile_data;
419 profile_data = exif_get_color_profile(exif, &profile_len);
423 gchar *interop_index;
425 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
426 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
427 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
432 source = "ColorSpace";
434 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
436 name = _("AdobeRGB");
437 source = (cs == 2) ? "ColorSpace" : "Iop";
440 g_free(interop_index);
444 source = _("embedded");
450 profile = cmsOpenProfileFromMem(profile_data, profile_len);
453 name = cmsTakeProductName(profile);
454 cmsCloseProfile(profile);
456 g_free(profile_data);
460 if (name[0] == 0 && source[0] == 0) return NULL;
461 return g_strdup_printf("%s (%s)", name, source);
464 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
474 string = g_string_new("");
476 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
477 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
481 for (i = 0; i < exif_item_get_elements(item); i++)
483 value = exif_item_get_rational(item, NULL, i);
484 if (value && value->num && value->den)
485 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
488 p2 = (gint)((p - p1)*60);
489 p3 = ((p - p1)*60 - p2)*60;
491 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
492 } // if (item && ref)
494 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
495 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
499 for (i = 0; i < exif_item_get_elements(item); i++)
501 value = exif_item_get_rational(item, NULL, i);
502 if (value && value->num && value->den)
503 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
506 p2 = (gint)((p - p1)*60);
507 p3 = ((p - p1)*60 - p2)*60;
509 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
510 } // if (item && ref)
513 g_string_free(string, FALSE);
516 } // static gchar *exif_build_forma...
518 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
525 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
526 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
528 if (!r || !item) return NULL;
530 alt = exif_rational_to_double(r, 0);
531 exif_item_get_integer(item, &ref);
533 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
537 /* List of custom formatted pseudo-exif tags */
538 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
540 ExifFormattedText ExifFormattedList[] = {
541 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
542 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
543 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
544 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
545 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
546 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
547 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
548 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
549 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
550 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
551 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
552 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
553 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
554 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
555 {"file.size", N_("File size"), NULL},
556 {"file.date", N_("File date"), NULL},
557 {"file.mode", N_("File mode"), NULL},
561 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
563 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
567 if (key_valid) *key_valid = TRUE;
569 key += EXIF_FORMATTED_LEN;
570 for (i = 0; ExifFormattedList[i].key; i++)
571 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
572 return ExifFormattedList[i].build_func(exif);
575 if (key_valid) *key_valid = FALSE;
579 gchar *exif_get_description_by_key(const gchar *key)
581 if (!key) return NULL;
583 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
584 strncmp(key, "file.", 5) == 0)
588 for (i = 0; ExifFormattedList[i].key; i++)
589 if (strcmp(key, ExifFormattedList[i].key) == 0)
590 return g_strdup(_(ExifFormattedList[i].description));
593 return exif_get_tag_description_by_key(key);
596 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
600 item = exif_get_item(exif, key);
601 return exif_item_get_integer(item, value);
604 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
608 item = exif_get_item(exif, key);
609 return exif_item_get_rational(item, sign, 0);
612 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
618 if (!key) return NULL;
620 text = exif_get_formatted_by_key(exif, key, &key_valid);
621 if (key_valid) return text;
623 item = exif_get_item(exif, key);
624 if (item) return exif_item_get_data_as_text(item);
630 static FileCacheData *exif_cache;
632 void exif_release_cb(FileData *fd)
638 void exif_init_cache(void)
641 exif_cache = file_cache_new(exif_release_cb, 4);
644 ExifData *exif_read_fd(FileData *fd)
648 if (!exif_cache) exif_init_cache();
650 if (!fd || !is_readable_file(fd->path)) return NULL;
652 if (file_cache_get(exif_cache, fd)) return fd->exif;
654 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
655 * not writable directly, thus it should contain the most up-to-date version */
659 /* we are not able to handle XMP sidecars without exiv2 */
660 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
662 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
665 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
667 g_free(sidecar_path);
672 void exif_free_fd(FileData *fd, ExifData *exif)
675 g_assert(fd->exif == exif);
677 file_cache_put(exif_cache, fd, 1);
680 /* embedded icc in jpeg */
683 #define JPEG_MARKER 0xFF
684 #define JPEG_MARKER_SOI 0xD8
685 #define JPEG_MARKER_EOI 0xD9
686 #define JPEG_MARKER_APP1 0xE1
687 #define JPEG_MARKER_APP2 0xE2
689 /* jpeg container format:
690 all data markers start with 0XFF
691 2 byte long file start and end markers: 0xFFD8(SOI) and 0XFFD9(EOI)
692 4 byte long data segment markers in format: 0xFFTTSSSSNNN...
693 FF: 1 byte standard marker identifier
695 SSSS: 2 bytes in Motorola byte alignment for length of the data.
696 This value includes these 2 bytes in the count, making actual
697 length of NN... == SSSS - 2.
698 NNN.: the data in this segment
701 gboolean exif_jpeg_segment_find(guchar *data, guint size,
702 guchar app_marker, const gchar *magic, guint magic_len,
703 guint *seg_offset, guint *seg_length)
709 while (marker != app_marker &&
710 marker != JPEG_MARKER_EOI)
715 if (offset + 2 >= size ||
716 data[offset] != JPEG_MARKER) return FALSE;
718 marker = data[offset + 1];
719 if (marker != JPEG_MARKER_SOI &&
720 marker != JPEG_MARKER_EOI)
722 if (offset + 4 >= size) return FALSE;
723 length += ((guint)data[offset + 2] << 8) + data[offset + 3];
727 if (marker == app_marker &&
728 offset + length < size &&
729 length >= 4 + magic_len &&
730 memcmp(data + offset + 4, magic, magic_len) == 0)
732 *seg_offset = offset + 4;
733 *seg_length = length - 4;
740 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
742 guint seg_offset = 0;
743 guint seg_length = 0;
744 guint chunk_offset[255];
745 guint chunk_length[255];
746 guint chunk_count = 0;
748 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
749 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
750 NN = segment number for data
751 TT = total number of ICC segments (TT in each ICC segment should match)
754 while (exif_jpeg_segment_find(data + seg_offset + seg_length,
755 size - seg_offset - seg_length,
757 "ICC_PROFILE\x00", 12,
758 &seg_offset, &seg_length))
763 if (seg_length < 14) return FALSE;
765 chunk_num = data[seg_offset + 12];
766 chunk_tot = data[seg_offset + 13];
768 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
770 if (chunk_count == 0)
774 chunk_count = (guint)chunk_tot;
775 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
776 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
779 if (chunk_tot != chunk_count ||
780 chunk_num > chunk_count) return FALSE;
783 chunk_offset[chunk_num] = seg_offset + 14;
784 chunk_length[chunk_num] = seg_length - 14;
793 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
794 cp_data = g_malloc(cp_length);
796 for (i = 0; i < chunk_count; i++)
798 if (chunk_offset[i] == 0)
800 /* error, we never saw this chunk */
804 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
806 DEBUG_1("Found embedded icc profile in jpeg");
807 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
816 *-------------------------------------------------------------------
818 * it is here because it shares tag neming infrastructure with exif
819 * we should probably not invest too much effort into this because
820 * new exiv2 will support the same functionality
821 * http://dev.exiv2.org/issues/show/505
822 *-------------------------------------------------------------------
825 static gchar *mode_number(mode_t m)
830 mb = mu = mg = mo = 0;
832 if (m & S_ISUID) mb |= 4;
833 if (m & S_ISGID) mb |= 2;
834 if (m & S_ISVTX) mb |= 1;
836 if (m & S_IRUSR) mu |= 4;
837 if (m & S_IWUSR) mu |= 2;
838 if (m & S_IXUSR) mu |= 1;
840 if (m & S_IRGRP) mg |= 4;
841 if (m & S_IWGRP) mg |= 2;
842 if (m & S_IXGRP) mg |= 1;
844 if (m & S_IROTH) mo |= 4;
845 if (m & S_IWOTH) mo |= 2;
846 if (m & S_IXOTH) mo |= 1;
848 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
849 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
850 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
851 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
852 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
853 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
854 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
855 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
856 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
859 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
862 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
864 if (strcmp(key, "file.size") == 0)
866 return g_strdup_printf("%ld", (long)fd->size);
868 if (strcmp(key, "file.date") == 0)
870 return g_strdup(text_from_time(fd->date));
872 if (strcmp(key, "file.mode") == 0)
874 return mode_number(fd->mode);
880 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */