15 #include <sys/types.h>
27 #include "format_raw.h"
28 #include "ui_fileops.h"
31 /* human readable key list */
33 ExifFormattedText ExifFormattedList[] = {
34 { "fCamera", N_("Camera") },
35 { "fDateTime", N_("Date") },
36 { "fShutterSpeed", N_("Shutter speed") },
37 { "fAperture", N_("Aperture") },
38 { "fExposureBias", N_("Exposure bias") },
39 { "fISOSpeedRating", N_("ISO sensitivity") },
40 { "fFocalLength", N_("Focal length") },
41 { "fSubjectDistance", N_("Subject distance") },
42 { "fFlash", N_("Flash") },
43 { "fResolution", N_("Resolution") },
47 static ExifTextList ExifFlashList[] = {
50 { 5, N_("yes, not detected by strobe") },
51 { 7, N_("yes, detected by strobe") },
56 double exif_rational_to_double(ExifRational *r, gint sign)
58 if (!r || r->den == 0.0) return 0.0;
60 if (sign) return (double)((int)r->num) / (double)((int)r->den);
61 return (double)r->num / r->den;
64 double exif_get_rational_as_double(ExifData *exif, const gchar *key)
69 r = exif_get_rational(exif, key, &sign);
70 return exif_rational_to_double(r, sign);
73 static GString *append_comma_text(GString *string, const gchar *text)
75 string = g_string_append(string, ", ");
76 string = g_string_append(string, text);
82 gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gint *key_valid)
84 /* must begin with f, else not formatted */
87 if (key_valid) *key_valid = FALSE;
91 if (key_valid) *key_valid = TRUE;
93 if (strcmp(key, "fCamera") == 0)
96 gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
97 gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
98 gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
100 text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", ((make) && (model)) ? " " : "",
101 (model) ? model : "",
102 (software) ? " (" : "",
103 (software) ? software : "",
104 (software) ? ")" : "");
111 if (strcmp(key, "fDateTime") == 0)
113 gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
114 gchar *subsec = NULL;
115 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
118 text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
119 if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
124 text = g_strconcat(tmp, ".", subsec, NULL);
130 if (strcmp(key, "fShutterSpeed") == 0)
134 r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
135 if (r && r->num && r->den)
137 double n = (double)r->den / (double)r->num;
138 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
139 n > 1.0 ? n : 1.0 / n);
141 r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
142 if (r && r->num && r->den)
144 double n = pow(2.0, exif_rational_to_double(r, TRUE));
146 /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
147 if (n > 1.0 && (int)n - ((int)(n/10))*10 == 1) n--;
149 return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
150 n > 1.0 ? floor(n) : 1.0 / n);
154 if (strcmp(key, "fAperture") == 0)
158 n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
159 if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
160 if (n == 0.0) return NULL;
162 return g_strdup_printf("f/%.1f", n);
164 if (strcmp(key, "fExposureBias") == 0)
170 r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
173 n = exif_rational_to_double(r, sign);
174 return g_strdup_printf("%+.1f", n);
176 if (strcmp(key, "fFocalLength") == 0)
180 n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
181 if (n == 0.0) return NULL;
182 return g_strdup_printf("%.2f mm", n);
184 if (strcmp(key, "fISOSpeedRating") == 0)
188 text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
189 /* kodak may set this instead */
190 if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
193 if (strcmp(key, "fSubjectDistance") == 0)
199 r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
202 if ((long)r->num == 0xffffffff) return g_strdup(_("infinity"));
203 if ((long)r->num == 0) return g_strdup(_("unknown"));
205 n = exif_rational_to_double(r, sign);
206 if (n == 0.0) return _("unknown");
207 return g_strdup_printf("%.3f m", n);
209 if (strcmp(key, "fFlash") == 0)
211 /* grr, flash is a bitmask... */
217 if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
219 /* Exif 2.1 only defines first 3 bits */
220 if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
222 /* must be Exif 2.2 */
223 string = g_string_new("");
225 /* flash fired (bit 0) */
226 string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
228 /* flash mode (bits 3, 4) */
230 if (v) string = append_comma_text(string, _("mode:"));
234 string = g_string_append(string, _("on"));
237 string = g_string_append(string, _("off"));
240 string = g_string_append(string, _("auto"));
244 /* return light (bits 1, 2) */
246 if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
247 if (v == 3) string = append_comma_text(string, _("detected by strobe"));
249 /* we ignore flash function (bit 5) */
251 /* red-eye (bit 6) */
252 if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
255 g_string_free(string, FALSE);
258 if (strcmp(key, "fResolution") == 0)
260 ExifRational *rx, *ry;
264 rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
265 ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
266 if (!rx || !ry) return NULL;
268 units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
269 text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (double)rx->num / rx->den : 1.0,
270 ry->den ? (double)ry->num / ry->den : 1.0,
271 _("dot"), (units) ? units : _("unknown"));
277 if (key_valid) *key_valid = FALSE;
281 const gchar *exif_get_description_by_key(const gchar *key)
285 if (!key) return NULL;
288 while (ExifFormattedList[i].key != NULL)
290 if (strcmp(key, ExifFormattedList[i].key) == 0) return _(ExifFormattedList[i].description);
294 return exif_get_tag_description_by_key(key);
297 gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
301 item = exif_get_item(exif, key);
302 return exif_item_get_integer(item, value);
305 ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
309 item = exif_get_item(exif, key);
310 return exif_item_get_rational(item, sign);
313 gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
319 if (!key) return NULL;
321 text = exif_get_formatted_by_key(exif, key, &key_valid);
322 if (key_valid) return text;
324 item = exif_get_item(exif, key);
325 if (item) return exif_item_get_data_as_text(item);
330 ExifData *exif_read_fd(FileData *fd, gint parse_color_profile)
332 GList *work = fd->sidecar_files;
333 gchar *sidecar_path = NULL;
337 FileData *sfd = work->data;
339 printf("sfd %s\n", sfd->path);
340 if (strcasecmp(sfd->extension, ".xmp") == 0)
342 sidecar_path = sfd->path;
348 // FIXME: some caching would be nice
349 return exif_read(fd->path, sidecar_path, parse_color_profile);