+++ /dev/null
-/*
- * GQView
- * (C) 2006 John Ellis
- *
-*/
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <math.h>
-
-#include <glib.h>
-
-#include "intl.h"
-
-#include "gqview.h"
-#include "exif.h"
-
-#include "format_raw.h"
-#include "ui_fileops.h"
-
-
-/* human readable key list */
-
-ExifFormattedText ExifFormattedList[] = {
- { "fCamera", N_("Camera") },
- { "fDateTime", N_("Date") },
- { "fShutterSpeed", N_("Shutter speed") },
- { "fAperture", N_("Aperture") },
- { "fExposureBias", N_("Exposure bias") },
- { "fISOSpeedRating", N_("ISO sensitivity") },
- { "fFocalLength", N_("Focal length") },
- { "fSubjectDistance", N_("Subject distance") },
- { "fFlash", N_("Flash") },
- { "fResolution", N_("Resolution") },
- { NULL, NULL }
-};
-
-static ExifTextList ExifFlashList[] = {
- { 0, N_("no") },
- { 1, N_("yes") },
- { 5, N_("yes, not detected by strobe") },
- { 7, N_("yes, detected by strobe") },
- EXIF_TEXT_LIST_END
-};
-
-
-double exif_rational_to_double(ExifRational *r, gint sign)
-{
- if (!r || r->den == 0.0) return 0.0;
-
- if (sign) return (double)((int)r->num) / (double)((int)r->den);
- return (double)r->num / r->den;
-}
-
-double exif_get_rational_as_double(ExifData *exif, const gchar *key)
-{
- ExifRational *r;
- gint sign;
-
- r = exif_get_rational(exif, key, &sign);
- return exif_rational_to_double(r, sign);
-}
-
-static GString *append_comma_text(GString *string, const gchar *text)
-{
- string = g_string_append(string, ", ");
- string = g_string_append(string, text);
-
- return string;
-}
-
-
-gchar *exif_get_formatted_by_key(ExifData *exif, const gchar *key, gint *key_valid)
-{
- /* must begin with f, else not formatted */
- if (key[0] != 'f')
- {
- if (key_valid) *key_valid = FALSE;
- return NULL;
- }
-
- if (key_valid) *key_valid = TRUE;
-
- if (strcmp(key, "fCamera") == 0)
- {
- gchar *text;
- gchar *make = exif_get_data_as_text(exif, "Exif.Image.Make");
- gchar *model = exif_get_data_as_text(exif, "Exif.Image.Model");
- gchar *software = exif_get_data_as_text(exif, "Exif.Image.Software");
-
- text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", ((make) && (model)) ? " " : "",
- (model) ? model : "",
- (software) ? " (" : "",
- (software) ? software : "",
- (software) ? ")" : "");
-
- g_free(make);
- g_free(model);
- g_free(software);
- return text;
- }
- if (strcmp(key, "fDateTime") == 0)
- {
- gchar *text = exif_get_data_as_text(exif, "Exif.Photo.DateTimeOriginal");
- gchar *subsec = NULL;
- if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTimeOriginal");
- if (!text)
- {
- text = exif_get_data_as_text(exif, "Exif.Image.DateTime");
- if (text) subsec = exif_get_data_as_text(exif, "Exif.Photo.SubSecTime");
- }
- if (subsec)
- {
- gchar *tmp = text;
- text = g_strconcat(tmp, ".", subsec, NULL);
- g_free(tmp);
- g_free(subsec);
- }
- return text;
- }
- if (strcmp(key, "fShutterSpeed") == 0)
- {
- ExifRational *r;
-
- r = exif_get_rational(exif, "Exif.Photo.ExposureTime", NULL);
- if (r && r->num && r->den)
- {
- double n = (double)r->den / (double)r->num;
- return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
- n > 1.0 ? n : 1.0 / n);
- }
- r = exif_get_rational(exif, "Exif.Photo.ShutterSpeedValue", NULL);
- if (r && r->num && r->den)
- {
- double n = pow(2.0, exif_rational_to_double(r, TRUE));
-
- /* Correct exposure time to avoid values like 1/91s (seen on Minolta DImage 7) */
- if (n > 1.0 && (int)n - ((int)(n/10))*10 == 1) n--;
-
- return g_strdup_printf("%s%.0fs", n > 1.0 ? "1/" : "",
- n > 1.0 ? floor(n) : 1.0 / n);
- }
- return NULL;
- }
- if (strcmp(key, "fAperture") == 0)
- {
- double n;
-
- n = exif_get_rational_as_double(exif, "Exif.Photo.FNumber");
- if (n == 0.0) n = exif_get_rational_as_double(exif, "Exif.Photo.ApertureValue");
- if (n == 0.0) return NULL;
-
- return g_strdup_printf("f/%.1f", n);
- }
- if (strcmp(key, "fExposureBias") == 0)
- {
- ExifRational *r;
- gint sign;
- double n;
-
- r = exif_get_rational(exif, "Exif.Photo.ExposureBiasValue", &sign);
- if (!r) return NULL;
-
- n = exif_rational_to_double(r, sign);
- return g_strdup_printf("%+.1f", n);
- }
- if (strcmp(key, "fFocalLength") == 0)
- {
- double n;
-
- n = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
- if (n == 0.0) return NULL;
- return g_strdup_printf("%.2f mm", n);
- }
- if (strcmp(key, "fISOSpeedRating") == 0)
- {
- gchar *text;
-
- text = exif_get_data_as_text(exif, "Exif.Photo.ISOSpeedRatings");
- /* kodak may set this instead */
- if (!text) text = exif_get_data_as_text(exif, "Exif.Photo.ExposureIndex");
- return text;
- }
- if (strcmp(key, "fSubjectDistance") == 0)
- {
- ExifRational *r;
- gint sign;
- double n;
-
- r = exif_get_rational(exif, "Exif.Photo.SubjectDistance", &sign);
- if (!r) return NULL;
-
- if ((long)r->num == 0xffffffff) return g_strdup(_("infinity"));
- if ((long)r->num == 0) return g_strdup(_("unknown"));
-
- n = exif_rational_to_double(r, sign);
- if (n == 0.0) return _("unknown");
- return g_strdup_printf("%.3f m", n);
- }
- if (strcmp(key, "fFlash") == 0)
- {
- /* grr, flash is a bitmask... */
- GString *string;
- gchar *text;
- gint n;
- gint v;
-
- if (!exif_get_integer(exif, "Exif.Photo.Flash", &n)) return NULL;
-
- /* Exif 2.1 only defines first 3 bits */
- if (n <= 0x07) return exif_get_data_as_text(exif, "Exif.Photo.Flash");
-
- /* must be Exif 2.2 */
- string = g_string_new("");
-
- /* flash fired (bit 0) */
- string = g_string_append(string, (n & 0x01) ? _("yes") : _("no"));
-
- /* flash mode (bits 3, 4) */
- v = (n >> 3) & 0x03;
- if (v) string = append_comma_text(string, _("mode:"));
- switch (v)
- {
- case 1:
- string = g_string_append(string, _("on"));
- break;
- case 2:
- string = g_string_append(string, _("off"));
- break;
- case 3:
- string = g_string_append(string, _("auto"));
- break;
- }
-
- /* return light (bits 1, 2) */
- v = (n >> 1) & 0x03;
- if (v == 2) string = append_comma_text(string, _("not detected by strobe"));
- if (v == 3) string = append_comma_text(string, _("detected by strobe"));
-
- /* we ignore flash function (bit 5) */
-
- /* red-eye (bit 6) */
- if ((n >> 5) & 0x01) string = append_comma_text(string, _("red-eye reduction"));
-
- text = string->str;
- g_string_free(string, FALSE);
- return text;
- }
- if (strcmp(key, "fResolution") == 0)
- {
- ExifRational *rx, *ry;
- gchar *units;
- gchar *text;
-
- rx = exif_get_rational(exif, "Exif.Image.XResolution", NULL);
- ry = exif_get_rational(exif, "Exif.Image.YResolution", NULL);
- if (!rx || !ry) return NULL;
-
- units = exif_get_data_as_text(exif, "Exif.Image.ResolutionUnit");
- text = g_strdup_printf("%0.f x %0.f (%s/%s)", rx->den ? (double)rx->num / rx->den : 1.0,
- ry->den ? (double)ry->num / ry->den : 1.0,
- _("dot"), (units) ? units : _("unknown"));
-
- g_free(units);
- return text;
- }
-
- if (key_valid) *key_valid = FALSE;
- return NULL;
-}
-
-const gchar *exif_get_description_by_key(const gchar *key)
-{
- gint i;
-
- if (!key) return NULL;
-
- i = 0;
- while (ExifFormattedList[i].key != NULL)
- {
- if (strcmp(key, ExifFormattedList[i].key) == 0) return _(ExifFormattedList[i].description);
- i++;
- }
-
- return exif_get_tag_description_by_key(key);
-}
-
-gint exif_get_integer(ExifData *exif, const gchar *key, gint *value)
-{
- ExifItem *item;
-
- item = exif_get_item(exif, key);
- return exif_item_get_integer(item, value);
-}
-
-ExifRational *exif_get_rational(ExifData *exif, const gchar *key, gint *sign)
-{
- ExifItem *item;
-
- item = exif_get_item(exif, key);
- return exif_item_get_rational(item, sign);
-}
-
-gchar *exif_get_data_as_text(ExifData *exif, const gchar *key)
-{
- ExifItem *item;
- gchar *text;
- gint key_valid;
-
- if (!key) return NULL;
-
- text = exif_get_formatted_by_key(exif, key, &key_valid);
- if (key_valid) return text;
-
- item = exif_get_item(exif, key);
- if (item) return exif_item_get_data_as_text(item);
-
- return NULL;
-}
-
-ExifData *exif_read_fd(FileData *fd, gint parse_color_profile)
-{
- GList *work = fd->parent ? fd->parent->sidecar_files : fd->sidecar_files;
- gchar *sidecar_path = NULL;
-
- if (strcasecmp(fd->extension, ".cr2") == 0 || // FIXME: list of formats that can have xmp sidecar, make it configurable
- strcasecmp(fd->extension, ".nef") == 0)
- {
- while(work)
- {
- FileData *sfd = work->data;
- work = work->next;
- printf("sfd %s\n", sfd->path);
- if (strcasecmp(sfd->extension, ".xmp") == 0)
- {
- sidecar_path = sfd->path;
- break;
- }
- }
- }
-
-
- // FIXME: some caching would be nice
- return exif_read(fd->path, sidecar_path, parse_color_profile);
-}
projects / geeqie.git / blobdiff