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_ShutterSpeed(ExifData *exif)
257 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
258 if (r && r->num && r->den)
260 gdouble n = (gdouble)r->den / (gdouble)r->num;
261 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
262 n > 1.0 ? n : 1.0 / n);
264 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
265 if (r && r->num && r->den)
267 gdouble n = pow(2.0, exif_rational_to_double(r, TRUE));
269 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
270 if (n > 1.0 && (gint)n - ((gint)(n/10))*10 == 1) n--;
272 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
273 n > 1.0 ? floor(n) : 1.0 / n);
278 static gchar *exif_build_formatted_Aperture(ExifData *exif)
282 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
283 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
284 if (n == 0.0) return NULL;
286 return g_strdup_printf("f/%.1f", n);
289 static gchar *exif_build_formatted_ExposureBias(ExifData *exif)
295 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
298 n = exif_rational_to_double(r, sign);
299 return g_strdup_printf("%+.1f", n);
302 static gchar *exif_build_formatted_FocalLength(ExifData *exif)
306 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
307 if (n == 0.0) return NULL;
308 return g_strdup_printf("%.0f mm", n);
311 static gchar *exif_build_formatted_FocalLength35mmFilm(ExifData *exif)
316 if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
318 return g_strdup_printf("%d mm", n);
321 f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
322 if (f == 0.0) return NULL;
324 c = get_crop_factor(exif);
325 if (c == 0.0) return NULL;
327 return g_strdup_printf("%.0f mm", f * c);
330 static gchar *exif_build_formatted_ISOSpeedRating(ExifData *exif)
334 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
335 /* kodak may set this instead */
336 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
340 static gchar *exif_build_formatted_SubjectDistance(ExifData *exif)
346 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
349 if ((glong)r->num == (glong)0xffffffff) return g_strdup(_("infinity"));
350 if ((glong)r->num == 0) return g_strdup(_("unknown"));
352 n = exif_rational_to_double(r, sign);
353 if (n == 0.0) return _("unknown");
354 return g_strdup_printf("%.3f m", n);
357 static gchar *exif_build_formatted_Flash(ExifData *exif)
359 /* grr, flash is a bitmask... */
365 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
367 /* Exif 2.1 only defines first 3 bits */
368 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
370 /* must be Exif 2.2 */
371 string = g_string_new("");
373 /* flash fired (bit 0) */
374 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
376 /* flash mode (bits 3, 4) */
378 if (v) string = append_comma_text(string, _("mode:"));
382 string = g_string_append(string, _("on"));
385 string = g_string_append(string, _("off"));
388 string = g_string_append(string, _("auto"));
392 /* return light (bits 1, 2) */
394 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
395 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
397 /* we ignore flash function (bit 5) */
399 /* red-eye (bit 6) */
400 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
403 g_string_free(string, FALSE);
407 static gchar *exif_build_formatted_Resolution(ExifData *exif)
409 ExifRational *rx, *ry;
413 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
414 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
415 if (!rx || !ry) return NULL;
417 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
418 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (gdouble)rx->num / rx->den : 1.0,
419 ry->den ? (gdouble)ry->num / ry->den : 1.0,
420 _("dot"), (units) ? units : _("unknown"));
426 static gchar *exif_build_formatted_ColorProfile(ExifData *exif)
429 cmsUInt8Number profileID[17];
431 const gchar *name = "";
432 const gchar *source = "";
433 guchar *profile_data;
436 profile_data = exif_get_color_profile(exif, &profile_len);
440 gchar *interop_index;
442 /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
443 if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
444 interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
449 source = "ColorSpace";
451 else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
453 name = _("AdobeRGB");
454 source = (cs == 2) ? "ColorSpace" : "Iop";
457 g_free(interop_index);
461 source = _("embedded");
467 profile = cmsOpenProfileFromMem(profile_data, profile_len);
471 profileID[16] = '\0';
472 cmsGetHeaderProfileID(profile, profileID);
473 name = (gchar *) profileID;
475 name = (gchar *) cmsTakeProductName(profile);
477 cmsCloseProfile(profile);
479 g_free(profile_data);
483 if (name[0] == 0 && source[0] == 0) return NULL;
484 return g_strdup_printf("%s (%s)", name, source);
487 static gchar *exif_build_formatted_GPSPosition(ExifData *exif)
497 string = g_string_new("");
499 item = exif_get_item(exif, "Exif.GPSInfo.GPSLatitude");
500 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLatitudeRef");
504 for (i = 0; i < exif_item_get_elements(item); i++)
506 value = exif_item_get_rational(item, NULL, i);
507 if (value && value->num && value->den)
508 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
511 p2 = (gint)((p - p1)*60);
512 p3 = ((p - p1)*60 - p2)*60;
514 g_string_append_printf(string, "%0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
515 } // if (item && ref)
517 item = exif_get_item(exif, "Exif.GPSInfo.GPSLongitude");
518 ref = exif_get_data_as_text(exif, "Exif.GPSInfo.GPSLongitudeRef");
522 for (i = 0; i < exif_item_get_elements(item); i++)
524 value = exif_item_get_rational(item, NULL, i);
525 if (value && value->num && value->den)
526 p += (gdouble)value->num / (gdouble)value->den / pow(60.0, (gdouble)i);
529 p2 = (gint)((p - p1)*60);
530 p3 = ((p - p1)*60 - p2)*60;
532 g_string_append_printf(string, ", %0lu° %0lu' %0.2f\" %.1s", p1, p2, p3, ref);
533 } // if (item && ref)
536 g_string_free(string, FALSE);
539 } // static gchar *exif_build_forma...
541 static gchar *exif_build_formatted_GPSAltitude(ExifData *exif)
548 item = exif_get_item(exif, "Exif.GPSInfo.GPSAltitudeRef");
549 r = exif_get_rational(exif, "Exif.GPSInfo.GPSAltitude", NULL);
551 if (!r || !item) return NULL;
553 alt = exif_rational_to_double(r, 0);
554 exif_item_get_integer(item, &ref);
556 return g_strdup_printf("%0.f m %s", alt, (ref==0)?_("Above Sea Level"):_("Below Sea Level"));
560 /* List of custom formatted pseudo-exif tags */
561 #define EXIF_FORMATTED_TAG(name, label) { EXIF_FORMATTED()#name, label, exif_build_formatted##_##name }
563 ExifFormattedText ExifFormattedList[] = {
564 EXIF_FORMATTED_TAG(Camera, N_("Camera")),
565 EXIF_FORMATTED_TAG(DateTime, N_("Date")),
566 EXIF_FORMATTED_TAG(ShutterSpeed, N_("Shutter speed")),
567 EXIF_FORMATTED_TAG(Aperture, N_("Aperture")),
568 EXIF_FORMATTED_TAG(ExposureBias, N_("Exposure bias")),
569 EXIF_FORMATTED_TAG(ISOSpeedRating, N_("ISO sensitivity")),
570 EXIF_FORMATTED_TAG(FocalLength, N_("Focal length")),
571 EXIF_FORMATTED_TAG(FocalLength35mmFilm, N_("Focal length 35mm")),
572 EXIF_FORMATTED_TAG(SubjectDistance, N_("Subject distance")),
573 EXIF_FORMATTED_TAG(Flash, N_("Flash")),
574 EXIF_FORMATTED_TAG(Resolution, N_("Resolution")),
575 EXIF_FORMATTED_TAG(ColorProfile, N_("Color profile")),
576 EXIF_FORMATTED_TAG(GPSPosition, N_("GPS position")),
577 EXIF_FORMATTED_TAG(GPSAltitude, N_("GPS altitude")),
578 {"file.size", N_("File size"), NULL},
579 {"file.date", N_("File date"), NULL},
580 {"file.mode", N_("File mode"), NULL},
584 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gboolean *key_valid)
586 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0)
590 if (key_valid) *key_valid = TRUE;
592 key += EXIF_FORMATTED_LEN;
593 for (i = 0; ExifFormattedList[i].key; i++)
594 if (ExifFormattedList[i].build_func && strcmp(key, ExifFormattedList[i].key + EXIF_FORMATTED_LEN) == 0)
595 return ExifFormattedList[i].build_func(exif);
598 if (key_valid) *key_valid = FALSE;
602 gchar *exif_get_description_by_key(const gchar *key)
604 if (!key) return NULL;
606 if (strncmp(key, EXIF_FORMATTED(), EXIF_FORMATTED_LEN) == 0 ||
607 strncmp(key, "file.", 5) == 0)
611 for (i = 0; ExifFormattedList[i].key; i++)
612 if (strcmp(key, ExifFormattedList[i].key) == 0)
613 return g_strdup(_(ExifFormattedList[i].description));
616 return exif_get_tag_description_by_key(key);
619 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
623 item = exif_get_item(exif, key);
624 return exif_item_get_integer(item, value);
627 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
631 item = exif_get_item(exif, key);
632 return exif_item_get_rational(item, sign, 0);
635 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
641 if (!key) return NULL;
643 text = exif_get_formatted_by_key(exif, key, &key_valid);
644 if (key_valid) return text;
646 item = exif_get_item(exif, key);
647 if (item) return exif_item_get_data_as_text(item);
653 static FileCacheData *exif_cache;
655 void exif_release_cb(FileData *fd)
661 void exif_init_cache(void)
663 g_assert(!exif_cache);
664 exif_cache = file_cache_new(exif_release_cb, 4);
667 ExifData *exif_read_fd(FileData *fd)
671 if (!exif_cache) exif_init_cache();
673 if (!fd) return NULL;
675 if (file_cache_get(exif_cache, fd)) return fd->exif;
676 g_assert(fd->exif == NULL);
678 /* CACHE_TYPE_XMP_METADATA file should exist only if the metadata are
679 * not writable directly, thus it should contain the most up-to-date version */
683 /* we are not able to handle XMP sidecars without exiv2 */
684 sidecar_path = cache_find_location(CACHE_TYPE_XMP_METADATA, fd->path);
686 if (!sidecar_path) sidecar_path = file_data_get_sidecar_path(fd, TRUE);
689 fd->exif = exif_read(fd->path, sidecar_path, fd->modified_xmp);
691 g_free(sidecar_path);
692 file_cache_put(exif_cache, fd, 1);
697 void exif_free_fd(FileData *fd, ExifData *exif)
700 g_assert(fd->exif == exif);
703 /* embedded icc in jpeg */
705 gboolean exif_jpeg_parse_color(ExifData *exif, guchar *data, guint size)
707 guint seg_offset = 0;
708 guint seg_length = 0;
709 guint chunk_offset[255];
710 guint chunk_length[255];
711 guint chunk_count = 0;
713 /* For jpeg/jfif, ICC color profile data can be in more than one segment.
714 the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
715 NN = segment number for data
716 TT = total number of ICC segments (TT in each ICC segment should match)
719 while (jpeg_segment_find(data + seg_offset + seg_length,
720 size - seg_offset - seg_length,
722 "ICC_PROFILE\x00", 12,
723 &seg_offset, &seg_length))
728 if (seg_length < 14) return FALSE;
730 chunk_num = data[seg_offset + 12];
731 chunk_tot = data[seg_offset + 13];
733 if (chunk_num == 0 || chunk_tot == 0) return FALSE;
735 if (chunk_count == 0)
739 chunk_count = (guint)chunk_tot;
740 for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
741 for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
744 if (chunk_tot != chunk_count ||
745 chunk_num > chunk_count) return FALSE;
748 chunk_offset[chunk_num] = seg_offset + 14;
749 chunk_length[chunk_num] = seg_length - 14;
758 for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
759 cp_data = g_malloc(cp_length);
761 for (i = 0; i < chunk_count; i++)
763 if (chunk_offset[i] == 0)
765 /* error, we never saw this chunk */
769 memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
771 DEBUG_1("Found embedded icc profile in jpeg");
772 exif_add_jpeg_color_profile(exif, cp_data, cp_length);
781 *-------------------------------------------------------------------
783 * it is here because it shares tag neming infrastructure with exif
784 * we should probably not invest too much effort into this because
785 * new exiv2 will support the same functionality
786 * http://dev.exiv2.org/issues/show/505
787 *-------------------------------------------------------------------
790 static gchar *mode_number(mode_t m)
795 mb = mu = mg = mo = 0;
797 if (m & S_ISUID) mb |= 4;
798 if (m & S_ISGID) mb |= 2;
799 if (m & S_ISVTX) mb |= 1;
801 if (m & S_IRUSR) mu |= 4;
802 if (m & S_IWUSR) mu |= 2;
803 if (m & S_IXUSR) mu |= 1;
805 if (m & S_IRGRP) mg |= 4;
806 if (m & S_IWGRP) mg |= 2;
807 if (m & S_IXGRP) mg |= 1;
809 if (m & S_IROTH) mo |= 4;
810 if (m & S_IWOTH) mo |= 2;
811 if (m & S_IXOTH) mo |= 1;
813 pbuf[0] = (m & S_IRUSR) ? 'r' : '-';
814 pbuf[1] = (m & S_IWUSR) ? 'w' : '-';
815 pbuf[2] = (m & S_IXUSR) ? 'x' : '-';
816 pbuf[3] = (m & S_IRGRP) ? 'r' : '-';
817 pbuf[4] = (m & S_IWGRP) ? 'w' : '-';
818 pbuf[5] = (m & S_IXGRP) ? 'x' : '-';
819 pbuf[6] = (m & S_IROTH) ? 'r' : '-';
820 pbuf[7] = (m & S_IWOTH) ? 'w' : '-';
821 pbuf[8] = (m & S_IXOTH) ? 'x' : '-';
824 return g_strdup_printf("%s (%d%d%d%d)", pbuf, mb, mu, mg, mo);
827 gchar *metadata_file_info(FileData *fd, const gchar *key, MetadataFormat format)
829 if (strcmp(key, "file.size") == 0)
831 return g_strdup_printf("%ld", (long)fd->size);
833 if (strcmp(key, "file.date") == 0)
835 return g_strdup(text_from_time(fd->date));
837 if (strcmp(key, "file.mode") == 0)
839 return mode_number(fd->mode);
845 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */