+++ /dev/null
-/*
- * GQView
- * (C) 2006 John Ellis
- * Copyright (C) 2008 The Geeqie Team
- *
-*/
-
-#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>
-
-#ifdef HAVE_LCMS
-/*** color support enabled ***/
-
-#ifdef HAVE_LCMS_LCMS_H
- #include <lcms/lcms.h>
-#else
- #include <lcms.h>
-#endif
-#endif
-
-#include <glib.h>
-
-#include "intl.h"
-
-#include "main.h"
-#include "exif.h"
-
-#include "filelist.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") },
- { "fFocalLength35mmFilm",N_("Focal length 35mm") },
- { "fSubjectDistance", N_("Subject distance") },
- { "fFlash", N_("Flash") },
- { "fResolution", N_("Resolution") },
- { "fColorProfile", N_("Color profile") },
- { NULL, NULL }
-};
-
-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;
-}
-
-static gchar *remove_common_prefix(gchar *s, gchar *t)
-{
- gint i;
-
- if (!s || !t) return t;
-
- for (i = 0; s[i] && t[i] && s[i] == t[i]; i++)
- ;
- if (!i)
- return t;
- if (s[i-1] == ' ' || !s[i])
- {
- while (t[i] == ' ')
- i++;
- return t + i;
- }
- return s;
-}
-
-static double get_crop_factor(ExifData *exif)
-{
- double res_unit_tbl[] = {0.0, 25.4, 25.4, 10.0, 1.0, 0.001 };
-
- double xres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneXResolution");
- double yres = exif_get_rational_as_double(exif, "Exif.Photo.FocalPlaneYResolution");
- int res_unit;
- int w, h;
- double xsize, ysize, size, ratio;
-
- if (xres == 0.0 || yres == 0.0) return 0.0;
-
- if (!exif_get_integer(exif, "Exif.Photo.FocalPlaneResolutionUnit", &res_unit)) return 0.0;
- if (res_unit < 1 || res_unit > 5) return 0.0;
-
- if (!exif_get_integer(exif, "Exif.Photo.PixelXDimension", &w)) return 0.0;
- if (!exif_get_integer(exif, "Exif.Photo.PixelYDimension", &h)) return 0.0;
-
- xsize = w * res_unit_tbl[res_unit] / xres;
- ysize = h * res_unit_tbl[res_unit] / yres;
-
- ratio = xsize / ysize;
-
- if (ratio < 0.5 || ratio > 2.0) return 0.0; /* reasonable ratio */
-
- size = sqrt(xsize * xsize + ysize * ysize);
-
- if (size < 1.0 || size > 100.0) return 0.0; /* reasonable sensor size in mm */
-
- return sqrt(36*36+24*24) / size;
-
-}
-
-
-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");
- gchar *model2;
- gchar *software2;
- gint i;
-
- if (make)
- {
- g_strstrip(make);
-#define REMOVE_SUFFIX(str,suff) \
-do { \
- if (g_str_has_suffix(str,suff)) \
- str[strlen(str)-(sizeof(suff)-1)] = 0; \
-} while(0)
- REMOVE_SUFFIX(make," Corporation"); /* Pentax */
- REMOVE_SUFFIX(make," OPTICAL CO.,LTD"); /* OLYMPUS */
- REMOVE_SUFFIX(make," CORPORATION"); /* Nikon */
- }
- if (model)
- g_strstrip(model);
- if (software)
- g_strstrip(software);
- /* remove superfluous spaces (pentax K100D) */
- for (i=0; software && software[i]; i++)
- if (software[i] == ' ' && software[i+1] == ' ')
- {
- gint j;
-
- for (j=1; software[i+j]; j++)
- if (software[i+j] != ' ')
- break;
- memmove(software+i+1, software+i+j, strlen(software+i+j)+1);
- }
-
- model2 = remove_common_prefix(make, model);
- software2 = remove_common_prefix(model2, software);
-
- text = g_strdup_printf("%s%s%s%s%s%s", (make) ? make : "", (make && model2) ? " " : "",
- (model2) ? model2 : "",
- (software2 && (make || model2)) ? " (" : "",
- (software2) ? software2 : "",
- (software2 && (make || model2)) ? ")" : "");
-
- 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("%.0f mm", n);
- }
- if (strcmp(key, "fFocalLength35mmFilm") == 0)
- {
- gint n;
- double f, c;
-
- if (exif_get_integer(exif, "Exif.Photo.FocalLengthIn35mmFilm", &n) && n != 0)
- {
- return g_strdup_printf("%d mm", n);
- }
-
- f = exif_get_rational_as_double(exif, "Exif.Photo.FocalLength");
- c = get_crop_factor(exif);
-
- if (f != 0.0 && c != 0.0)
- {
- return g_strdup_printf("%.0f mm", f * c);
- }
-
- return NULL;
- }
- 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 (strcmp(key, "fColorProfile") == 0)
- {
- const gchar *name = "";
- const gchar *source = "";
- unsigned char *profile_data;
- guint profile_len;
- profile_data = exif_get_color_profile(exif, &profile_len);
- if (!profile_data)
- {
- gint cs;
- gchar *interop_index;
-
- /* ColorSpace == 1 specifies sRGB per EXIF 2.2 */
- if (!exif_get_integer(exif, "Exif.Photo.ColorSpace", &cs)) cs = 0;
- interop_index = exif_get_data_as_text(exif, "Exif.Iop.InteroperabilityIndex");
-
- if (cs == 1)
- {
- name = _("sRGB");
- source = "ColorSpace";
- }
- else if (cs == 2 || (interop_index && !strcmp(interop_index, "R03")))
- {
- name = _("AdobeRGB");
- source = (cs == 2) ? "ColorSpace" : "Iop";
- }
-
- g_free(interop_index);
- }
- else
- {
- source = _("embedded");
-#ifdef HAVE_LCMS
-
- {
- cmsHPROFILE profile;
-
- profile = cmsOpenProfileFromMem(profile_data, profile_len);
- if (profile)
- {
- name = cmsTakeProductName(profile);
- cmsCloseProfile(profile);
- }
- g_free(profile_data);
- }
-#endif
- }
- if (name[0] == 0 && source[0] == 0) return NULL;
- return g_strdup_printf("%s (%s)", name, source);
- }
-
- 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)
-{
- GList *work;
- gchar *sidecar_path = NULL;
-
- if (!fd) return NULL;
-
- work = fd->parent ? fd->parent->sidecar_files : fd->sidecar_files;
-
- if (filter_file_class(fd->extension, FORMAT_CLASS_RAWIMAGE))
- {
- while(work)
- {
- FileData *sfd = work->data;
- work = work->next;
- if (strcasecmp(sfd->extension, ".xmp") == 0)
- {
- sidecar_path = sfd->path;
- break;
- }
- }
- }
-
-
- // FIXME: some caching would be nice
- return exif_read(fd->path, sidecar_path);
-}
-
-
-
-/* embedded icc in jpeg */
-
-
-#define JPEG_MARKER 0xFF
-#define JPEG_MARKER_SOI 0xD8
-#define JPEG_MARKER_EOI 0xD9
-#define JPEG_MARKER_APP1 0xE1
-#define JPEG_MARKER_APP2 0xE2
-
-/* jpeg container format:
- all data markers start with 0XFF
- 2 byte long file start and end markers: 0xFFD8(SOI) and 0XFFD9(EOI)
- 4 byte long data segment markers in format: 0xFFTTSSSSNNN...
- FF: 1 byte standard marker identifier
- TT: 1 byte data type
- SSSS: 2 bytes in Motorola byte alignment for length of the data.
- This value includes these 2 bytes in the count, making actual
- length of NN... == SSSS - 2.
- NNN.: the data in this segment
- */
-
-gint exif_jpeg_segment_find(unsigned char *data, guint size,
- guchar app_marker, const gchar *magic, guint magic_len,
- guint *seg_offset, guint *seg_length)
-{
- guchar marker = 0;
- guint offset = 0;
- guint length = 0;
-
- while (marker != app_marker &&
- marker != JPEG_MARKER_EOI)
- {
- offset += length;
- length = 2;
-
- if (offset + 2 >= size ||
- data[offset] != JPEG_MARKER) return FALSE;
-
- marker = data[offset + 1];
- if (marker != JPEG_MARKER_SOI &&
- marker != JPEG_MARKER_EOI)
- {
- if (offset + 4 >= size) return FALSE;
- length += ((guint)data[offset + 2] << 8) + data[offset + 3];
- }
- }
-
- if (marker == app_marker &&
- offset + length < size &&
- length >= 4 + magic_len &&
- memcmp(data + offset + 4, magic, magic_len) == 0)
- {
- *seg_offset = offset + 4;
- *seg_length = length - 4;
- return TRUE;
- }
-
- return FALSE;
-}
-
-gint exif_jpeg_parse_color(ExifData *exif, unsigned char *data, guint size)
-{
- guint seg_offset = 0;
- guint seg_length = 0;
- guint chunk_offset[255];
- guint chunk_length[255];
- guint chunk_count = 0;
-
- /* For jpeg/jfif, ICC color profile data can be in more than one segment.
- the data is in APP2 data segments that start with "ICC_PROFILE\x00\xNN\xTT"
- NN = segment number for data
- TT = total number of ICC segments (TT in each ICC segment should match)
- */
-
- while (exif_jpeg_segment_find(data + seg_offset + seg_length,
- size - seg_offset - seg_length,
- JPEG_MARKER_APP2,
- "ICC_PROFILE\x00", 12,
- &seg_offset, &seg_length))
- {
- guchar chunk_num;
- guchar chunk_tot;
-
- if (seg_length < 14) return FALSE;
-
- chunk_num = data[seg_offset + 12];
- chunk_tot = data[seg_offset + 13];
-
- if (chunk_num == 0 || chunk_tot == 0) return FALSE;
-
- if (chunk_count == 0)
- {
- guint i;
-
- chunk_count = (guint)chunk_tot;
- for (i = 0; i < chunk_count; i++) chunk_offset[i] = 0;
- for (i = 0; i < chunk_count; i++) chunk_length[i] = 0;
- }
-
- if (chunk_tot != chunk_count ||
- chunk_num > chunk_count) return FALSE;
-
- chunk_num--;
- chunk_offset[chunk_num] = seg_offset + 14;
- chunk_length[chunk_num] = seg_length - 14;
- }
-
- if (chunk_count > 0)
- {
- unsigned char *cp_data;
- guint cp_length = 0;
- guint i;
-
- for (i = 0; i < chunk_count; i++) cp_length += chunk_length[i];
- cp_data = g_malloc(cp_length);
-
- for (i = 0; i < chunk_count; i++)
- {
- if (chunk_offset[i] == 0)
- {
- /* error, we never saw this chunk */
- g_free(cp_data);
- return FALSE;
- }
- memcpy(cp_data, data + chunk_offset[i], chunk_length[i]);
- }
- DEBUG_1("Found embedded icc profile in jpeg");
- exif_add_jpeg_color_profile(exif, cp_data, cp_length);
-
- return TRUE;
- }
-
- return FALSE;
-}
projects / geeqie.git / blobdiff