4 * Copyright (C) 2008 - 2009 The Geeqie Team
16 #include <sys/types.h>
22 /*** color support enabled ***/
24 #ifdef HAVE_LCMS_LCMS_H
25 #include <lcms/lcms.h>
39 #include "filefilter.h"
40 #include "filecache.h"
41 #include "format_raw.h"
42 #include "ui_fileops.h"
46 static gdouble exif_rational_to_double(ExifRational *r, gint sign)
48 if (!r || r->den == 0.0) return 0.0;
50 if (sign) return (gdouble)((gint)r->num) / (gdouble)((gint)r->den);
51 return (gdouble)r->num / r->den;
54 static gdouble exif_get_rational_as_double(ExifData *exif, const gchar *key)
59 r = exif_get_rational(exif, key, &sign);
60 return exif_rational_to_double(r, sign);
63 static GString *append_comma_text(GString *string, const gchar *text)
65 string = g_string_append(string, ", ");
66 string = g_string_append(string, text);
71 static gchar *remove_common_prefix(gchar *s, gchar *t)
75 if (!s || !t) return t;
77 for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
81 if (s[i-1] == ' ' || !s[i])
90 static gdouble get_crop_factor(ExifData *exif)
92 gdouble res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
93 gdouble xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
94 gdouble yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
97 gdouble xsize, ysize, size, ratio;
99 if (xres == 0.0 || yres == 0.0) return 0.0;
101 if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
102 if (res_unit < 1 || res_unit > 5) return 0.0;
104 if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
105 if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
107 xsize = w * res_unit_tbl[res_unit] / xres;
108 ysize = h * res_unit_tbl[res_unit] / yres;
110 ratio = xsize / ysize;
112 if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
114 size = sqrt(xsize * xsize + ysize * ysize);
116 if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
118 return sqrt(36*36+24*24) / size;
122 static gboolean remove_suffix(gchar *str, const gchar *suffix, gint suffix_len)
124 gint str_len = strlen(str);
126 if (suffix_len < 0) suffix_len = strlen(suffix);
127 if (str_len < suffix_len) return FALSE;
129 if (strcmp(str + str_len - suffix_len, suffix) != 0) return FALSE;
130 str[str_len - suffix_len] = '\0';
135 static gchar *exif_build_formatted_Camera(ExifData *exif)
138 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
139 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
140 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
148 if (remove_suffix(make, " CORPORATION", 12)) { /* Nikon */ }
149 else if (remove_suffix(make, " Corporation", 12)) { /* Pentax */ }
150 else if (remove_suffix(make, " OPTICAL CO.,LTD", 16)) { /* OLYMPUS */ };
160 g_strstrip(software);
162 /* remove superfluous spaces (pentax K100D) */
163 for (i = 0, j = 0; software[i]; i++, j++)
165 if (software[i] == ' ' && software[i + 1] == ' ')
167 if (i != j) software[j] = software[i];
172 model2 = remove_common_prefix(make, model);
173 software2 = remove_common_prefix(model2, software);
175 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
176 (model2) ? model2 : "",
177 (software2 && (make || model2)) ? " (" : "",
178 (software2) ? software2 : "",
179 (software2 && (make || model2)) ? ")" : "");
187 static gchar *exif_build_formatted_DateTime(ExifData *exif)
189 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
190 gchar *subsec = NULL;
194 subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
198 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
199 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
204 text = g_strconcat(tmp, ".", subsec, NULL);
211 static gchar *exif_build_formatted_ShutterSpeed(ExifData *exif)
215 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
216 if (r && r->num && r->den)
218 gdouble n = (gdouble)r->den / (gdouble)r->num;
219 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
220 n > 1.0 ? n : 1.0 / n);
222 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
223 if (r && r->num && r->den)
225 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
227 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
228 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
230 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
231 n > 1.0 ? floor(n) : 1.0 / n);
236 static gchar *exif_build_formatted_Aperture(ExifData *exif)
240 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
241 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
242 if (n == 0.0) return NULL;
244 return g_strdup_printf("f/%.1f", n);
247 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
253 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
256 n = exif_rational_to_double(r, sign);
257 return g_strdup_printf("%+.1f", n);
260 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
264 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
265 if (n == 0.0) return NULL;
266 return g_strdup_printf("%.0f mm", n);
269 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
274 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
276 return g_strdup_printf("%d mm", n);
279 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
280 if (f == 0.0) return NULL;
282 c = get_crop_factor(exif);
283 if (c == 0.0) return NULL;
285 return g_strdup_printf("%.0f mm", f * c);
288 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
292 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
293 /* kodak may set this instead */
294 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
298 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
304 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
307 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
308 if ((glong)r->num == 0) return g_strdup(_("unknown"));
310 n = exif_rational_to_double(r, sign);
311 if (n == 0.0) return _("unknown");
312 return g_strdup_printf("%.3f m", n);
315 static gchar *exif_build_formatted_Flash(ExifData *exif)
317 /* grr, flash is a bitmask... */
323 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
325 /* Exif 2.1 only defines first 3 bits */
326 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
328 /* must be Exif 2.2 */
329 string = g_string_new("");
331 /* flash fired (bit 0) */
332 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
334 /* flash mode (bits 3, 4) */
336 if (v) string = append_comma_text(string, _("mode:"));
340 string = g_string_append(string, _("on"));
343 string = g_string_append(string, _("off"));
346 string = g_string_append(string, _("auto"));
350 /* return light (bits 1, 2) */
352 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
353 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
355 /* we ignore flash function (bit 5) */
357 /* red-eye (bit 6) */
358 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
361 g_string_free(string, FALSE);
365 static gchar *exif_build_formatted_Resolution(ExifData *exif)
367 ExifRational *rx, *ry;
371 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
372 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
373 if (!rx || !ry) return NULL;
375 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
376 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
377 ry->den ? (gdouble)ry->num / ry->den : 1.0,
378 _("dot"), (units) ? units : _("unknown"));
384 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
386 const gchar *name = "";
387 const gchar *source = "";
388 guchar *profile_data;
391 profile_data = exif_get_color_profile(exif, &profile_len);
395 gchar *interop_index;
397 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
398 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
399 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
404 source = "ColorSpace";
406 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
408 name = _("AdobeRGB");
409 source = (cs == 2) ? "ColorSpace" : "Iop";
412 g_free(interop_index);
416 source = _("embedded");
422 profile = cmsOpenProfileFromMem(profile_data, profile_len);
425 name = cmsTakeProductName(profile);
426 cmsCloseProfile(profile);
428 g_free(profile_data);
432 if (name[0] == 0 && source[0] == 0) return NULL;
433 return g_strdup_printf("%s (%s)", name, source);
436 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
446 string = g_string_new("");
448 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
449 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
453 for (i = 0; i < exif_item_get_elements(item); i++)
455 value = exif_item_get_rational(item, NULL, i);
456 if (value && value->num && value->den)
457 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
460 p2 = (gint)((p - p1)*60);
461 p3 = ((p - p1)*60 - p2)*60;
463 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
464 } // if (item && ref)
466 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
467 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
471 for (i = 0; i < exif_item_get_elements(item); i++)
473 value = exif_item_get_rational(item, NULL, i);
474 if (value && value->num && value->den)
475 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
478 p2 = (gint)((p - p1)*60);
479 p3 = ((p - p1)*60 - p2)*60;
481 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
482 } // if (item && ref)
485 g_string_free(string, FALSE);
488 } // static gchar *exif_build_forma...
490 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
497 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
498 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
500 if (!r || !item) return NULL;
502 alt = exif_rational_to_double(r, 0);
503 exif_item_get_integer(item, &ref);
505 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
509 /* List of custom formatted pseudo-exif tags */
510 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
512 ExifFormattedText ExifFormattedList[] = {
513 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
514 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
515 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
516 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
517 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
518 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
519 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
520 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
521 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
522 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
523 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
524 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
525 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
526 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
527 {"file.size", N_("File size"), NULL},
528 {"file.date", N_("File date"), NULL},
529 {"file.mode", N_("File mode"), NULL},
533 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
535 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
539 if (key_valid) *key_valid = TRUE;
541 key += EXIF_FORMATTED_LEN;
542 for (i = 0; ExifFormattedList[i].key; i++)
543 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
544 return ExifFormattedList[i].build_func(exif);
547 if (key_valid) *key_valid = FALSE;
551 gchar *exif_get_description_by_key(const gchar *key)
553 if (!key) return NULL;
555 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
556 strncmp(key, "file.", 5) == 0)
560 for (i = 0; ExifFormattedList[i].key; i++)
561 if (strcmp(key, ExifFormattedList[i].key) == 0)
562 return g_strdup(_(ExifFormattedList[i].description));
565 return exif_get_tag_description_by_key(key);
568 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
572 item = exif_get_item(exif, key);
573 return exif_item_get_integer(item, value);
576 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
580 item = exif_get_item(exif, key);
581 return exif_item_get_rational(item, sign, 0);
584 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
590 if (!key) return NULL;
592 text = exif_get_formatted_by_key(exif, key, &key_valid);
593 if (key_valid) return text;
595 item = exif_get_item(exif, key);
596 if (item) return exif_item_get_data_as_text(item);
602 static FileCacheData *exif_cache;
604 void exif_release_cb(FileData *fd)
610 ExifData *exif_read_fd(FileData *fd)
614 if (!fd || !is_readable_file(fd->path)) return NULL;
616 if (!exif_cache) exif_cache = file_cache_new(exif_release_cb, 4);
618 if (file_cache_get(exif_cache, fd)) return fd->exif;
620 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
621 * not writable directly, thus it should contain the most up-to-date version */
625 /* we are not able to handle XMP sidecars without exiv2 */
626 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
628 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
631 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
633 g_free(sidecar_path);
638 void exif_free_fd(FileData *fd, ExifData *exif)
641 g_assert(fd->exif == exif);
643 file_cache_put(exif_cache, fd, 1);
646 /* embedded icc in jpeg */
649 #define JPEG_MARKER 0xFF
650 #define JPEG_MARKER_SOI 0xD8
651 #define JPEG_MARKER_EOI 0xD9
652 #define JPEG_MARKER_APP1 0xE1
653 #define JPEG_MARKER_APP2 0xE2
655 /* jpeg container format:
656 all data markers start with 0XFF
657 2 byte long file start and end markers: 0xFFD8(SOI) and 0XFFD9(EOI)
658 4 byte long data segment markers in format: 0xFFTTSSSSNNN...
659 FF: 1 byte standard marker identifier
661 SSSS: 2 bytes in Motorola byte alignment for length of the data.
662 This value includes these 2 bytes in the count, making actual
663 length of NN... == SSSS - 2.
664 NNN.: the data in this segment
667 gboolean exif_jpeg_segment_find(guchar *data, guint size,
668 guchar app_marker, const gchar *magic, guint magic_len,
669 guint *seg_offset, guint *seg_length)
675 while (marker != app_marker &&
676 marker != JPEG_MARKER_EOI)
681 if (offset + 2 >= size ||
682 data[offset] != JPEG_MARKER) return FALSE;
684 marker = data[offset + 1];
685 if (marker != JPEG_MARKER_SOI &&
686 marker != JPEG_MARKER_EOI)
688 if (offset + 4 >= size) return FALSE;
689 length += ((guint)data[offset + 2] << 8) + data[offset + 3];
693 if (marker == app_marker &&
694 offset + length < size &&
695 length >= 4 + magic_len &&
696 memcmp(data + offset + 4, magic, magic_len) == 0)
698 *seg_offset = offset + 4;
699 *seg_length = length - 4;
706 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
708 guint seg_offset = 0;
709 guint seg_length = 0;
710 guint chunk_offset[255];
711 guint chunk_length[255];
712 guint chunk_count = 0;
714 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
715 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
716 NN = segment number for data
717 TT = total number of ICC segments (TT in each ICC segment should match)
720 while (exif_jpeg_segment_find(data + seg_offset + seg_length,
721 size - seg_offset - seg_length,
723 "ICC_PROFILE\x00", 12,
724 &seg_offset, &seg_length))
729 if (seg_length < 14) return FALSE;
731 chunk_num = data[seg_offset + 12];
732 chunk_tot = data[seg_offset + 13];
734 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
736 if (chunk_count == 0)
740 chunk_count = (guint)chunk_tot;
741 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
742 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
745 if (chunk_tot != chunk_count ||
746 chunk_num > chunk_count) return FALSE;
749 chunk_offset[chunk_num] = seg_offset + 14;
750 chunk_length[chunk_num] = seg_length - 14;
759 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
760 cp_data = g_malloc(cp_length);
762 for (i = 0; i < chunk_count; i++)
764 if (chunk_offset[i] == 0)
766 /* error, we never saw this chunk */
770 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
772 DEBUG_1("Found embedded icc profile in jpeg");
773 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
782 *-------------------------------------------------------------------
784 * it is here because it shares tag neming infrastructure with exif
785 * we should probably not invest too much effort into this because
786 * new exiv2 will support the same functionality
787 * http://dev.exiv2.org/issues/show/505
788 *-------------------------------------------------------------------
791 static gchar *mode_number(mode_t m)
796 mb = mu = mg = mo = 0;
798 if (m & S_ISUID) mb |= 4;
799 if (m & S_ISGID) mb |= 2;
800 if (m & S_ISVTX) mb |= 1;
802 if (m & S_IRUSR) mu |= 4;
803 if (m & S_IWUSR) mu |= 2;
804 if (m & S_IXUSR) mu |= 1;
806 if (m & S_IRGRP) mg |= 4;
807 if (m & S_IWGRP) mg |= 2;
808 if (m & S_IXGRP) mg |= 1;
810 if (m & S_IROTH) mo |= 4;
811 if (m & S_IWOTH) mo |= 2;
812 if (m & S_IXOTH) mo |= 1;
814 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
815 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
816 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
817 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
818 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
819 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
820 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
821 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
822 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
825 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
828 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
830 if (strcmp(key, "file.size") == 0)
832 return g_strdup_printf("%ld", (long)fd->size);
834 if (strcmp(key, "file.date") == 0)
836 return g_strdup(text_from_time(fd->date));
838 if (strcmp(key, "file.mode") == 0)
840 return mode_number(fd->mode);
846 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */