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- exif handling changed

- gps info added if available
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1 parent 8e96382 commit 9e1bbf874500e99506baffec3c6b54ed04e60a2f @reald committed Mar 16, 2012
Showing with 250 additions and 78 deletions.
  1. +180 −72 src/exif.c
  2. +4 −1 src/exif.h
  3. +61 −0 src/exif_cfg.h
  4. +5 −5 src/imlib.c
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@@ -34,7 +34,14 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "debug.h"
#include "exif.h"
#include "exif_nikon.h"
+#include "exif_cfg.h"
+static void exif_trim_spaces(char *str);
+static void exif_get_tag(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, unsigned int maxsize);
+static void exif_get_tag_content(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, unsigned int maxsize);
+static void exif_get_mnote_tag(ExifData *d, unsigned int tag, char* buffer, unsigned int maxsize);
+static void exif_get_mnote_nikon_tags(ExifData *ed, char * buffer, unsigned int maxsize);
+static void exif_get_gps_coords(ExifData * ed, char *buffer, unsigned int maxsize);
/* remove all spaces on the right end of a string */
static void exif_trim_spaces(char *str)
@@ -52,18 +59,19 @@ static void exif_trim_spaces(char *str)
}
-/* show given exif tag content */
+/* show given exif tag content with tag name */
static void exif_get_tag(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, unsigned int maxsize)
{
- char s[MAX_EXIF_DATA];
-
+ char s[EXIF_MAX_DATA];
+ ExifEntry *entry = NULL;
+
if ( (d != NULL) && (buffer != NULL) && (maxsize>0) )
{
- ExifEntry *entry = exif_content_get_entry(d->ifd[ifd], tag);
+ entry = exif_content_get_entry(d->ifd[ifd], tag);
if (entry != NULL)
{
/* Get the contents of the tag in human-readable form */
- exif_entry_get_value(entry, s, maxsize);
+ exif_entry_get_value(entry, s, EXIF_MAX_DATA);
/* Don't bother printing it if it's entirely blank */
exif_trim_spaces(s);
@@ -78,6 +86,34 @@ static void exif_get_tag(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, un
+/* show given exif tag content without tag name */
+static void exif_get_tag_content(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, unsigned int maxsize)
+{
+ char s[EXIF_MAX_DATA];
+ ExifEntry *entry = NULL;
+
+ if ( (d != NULL) && (buffer != NULL) && (maxsize>0) )
+ {
+ entry = exif_content_get_entry(d->ifd[ifd], tag);
+ if (entry != NULL)
+ {
+ /* Get the contents of the tag in human-readable form */
+ exif_entry_get_value(entry, s, EXIF_MAX_DATA);
+
+ /* Don't bother printing it if it's entirely blank */
+ exif_trim_spaces(s);
+ if (*s != '\0')
+ {
+ D(("%s", exif_tag_get_name_in_ifd(tag,ifd), s));
+ snprintf(buffer, (size_t)maxsize, "%s", s);
+ }
+ }
+ }
+
+}
+
+
+
/* Show the given MakerNote tag if it exists */
static void exif_get_mnote_tag(ExifData *d, unsigned int tag, char* buffer, unsigned int maxsize)
{
@@ -119,6 +155,125 @@ static void exif_get_mnote_tag(ExifData *d, unsigned int tag, char* buffer, unsi
+/* get interesting nikon maker note tags in readable form */
+static void exif_get_mnote_nikon_tags(ExifData *ed, char * buffer, unsigned int maxsize)
+{
+ char buf[EXIF_STD_BUF_LEN];
+ unsigned int exn_fcm = (EXN_FLASH_CONTROL_MODES_MAX-1); /* default to N/A */
+ unsigned int version = 0;
+ unsigned int length = 0;
+
+ buf[0] = '\0';
+ exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FLASH, buf, sizeof(buf));
+ exif_trim_spaces(buf);
+
+ if ( !(strcmp("Flash: Flash did not fire\n", buf) == 0) )
+ {
+ /* show extended flash info if flash was fired */
+
+ /* Flash Setting */
+ exif_get_mnote_tag(ed, 8, buffer + strlen(buffer), maxsize - strlen(buffer));
+ /* Flash Mode */
+ exif_get_mnote_tag(ed, 9, buffer + strlen(buffer), maxsize - strlen(buffer));
+ /* flash exposure bracket value */
+ exif_get_mnote_tag(ed, 24, buffer + strlen(buffer), maxsize - strlen(buffer));
+ /* Flash used */
+ exif_get_mnote_tag(ed, 135, buffer + strlen(buffer), maxsize - strlen(buffer));
+
+ /* Flash info: control mode. */
+ /* libexif does not support flash info 168 yet. so we have to parse the debug data :-( */
+ buf[0] = '\0';
+ exif_get_mnote_tag(ed, 168, buf, sizeof(buf));
+ sscanf(buf, "(null): %u bytes unknown data: 303130%02X%*10s%02X", &length, &version, &exn_fcm);
+ exn_fcm = exn_fcm & EXN_FLASH_CONTROL_MODE_MASK;
+
+ if ( (exn_fcm < EXN_FLASH_CONTROL_MODES_MAX)
+ && ( ((length == 22) && (version == '3')) /* Nikon FlashInfo0103 */
+ || ((length == 22) && (version == '4')) /* Nikon FlashInfo0104 */
+ || ((length == 21) && (version == '2')) /* Nikon FlashInfo0102 */
+ || ((length == 19) && (version == '0')) /* Nikon FlashInfo0100 */
+ )
+ )
+ {
+ snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), "NikonFlashControlMode: %s\n",
+ EXN_NikonFlashControlModeValues[exn_fcm]);
+ }
+ }
+
+ /* Lens */
+ exif_get_mnote_tag(ed, 132, buffer + strlen(buffer), maxsize - strlen(buffer));
+ /* Digital Vari-Program */
+ exif_get_mnote_tag(ed, 171, buffer + strlen(buffer), maxsize - strlen(buffer));
+
+ return;
+}
+
+
+
+/* get gps coordinates if available */
+static void exif_get_gps_coords(ExifData * ed, char *buffer, unsigned int maxsize)
+{
+ char buf[EXIF_STD_BUF_LEN];
+
+ buf[0] = '\0';
+ exif_get_tag_content(ed, EXIF_IFD_GPS, EXIF_TAG_GPS_LATITUDE_REF, buf, sizeof(buf));
+ if ( buf[0] != '\0' )
+ {
+ snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), "GPS: %s ", buf);
+ }
+ else
+ {
+ return;
+ }
+
+ buf[0] = '\0';
+ exif_get_tag_content(ed, EXIF_IFD_GPS, EXIF_TAG_GPS_LATITUDE, buf, sizeof(buf));
+ if ( buf[0] != '\0' )
+ {
+ snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), "%s ", buf);
+ }
+ else
+ {
+ return;
+ }
+
+ buf[0] = '\0';
+ exif_get_tag_content(ed, EXIF_IFD_GPS, EXIF_TAG_GPS_LONGITUDE_REF, buf, sizeof(buf));
+ if ( buf[0] != '\0' )
+ {
+ snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), ", %s ", buf);
+ }
+ else
+ {
+ return;
+ }
+
+ buf[0] = '\0';
+ exif_get_tag_content(ed, EXIF_IFD_GPS, EXIF_TAG_GPS_LONGITUDE, buf, sizeof(buf));
+ if ( buf[0] != '\0' )
+ {
+ snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), "%s ", buf);
+ }
+ else
+ {
+ return;
+ }
+
+ buf[0] = '\0';
+ exif_get_tag_content(ed, EXIF_IFD_GPS, EXIF_TAG_GPS_MAP_DATUM, buf, sizeof(buf));
+ if ( buf[0] != '\0' )
+ {
+ snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), "(%s)\n", buf);
+ }
+ else
+ {
+ return;
+ }
+
+}
+
+
+
/* return data structure with exif data if available */
ExifData * exif_get_data(char *path)
{
@@ -136,15 +291,14 @@ ExifData * exif_get_data(char *path)
+
/* get exif data in readable form */
void exif_get_info(ExifData * ed, char *buffer, unsigned int maxsize)
{
ExifEntry *entry = NULL;
- char buf[128];
- unsigned int exn_fcm = (EXN_FLASH_CONTROL_MODES_MAX-1); /* default to N/A */
- unsigned int version = 0;
- unsigned int length = 0;
-
+ char buf[EXIF_STD_BUF_LEN];
+ int i = 0;
+
if ( (buffer == NULL) || (maxsize == 0) )
{
return;
@@ -157,24 +311,11 @@ void exif_get_info(ExifData * ed, char *buffer, unsigned int maxsize)
else
{
/* normal exif tags */
- exif_get_tag(ed, EXIF_IFD_0, EXIF_TAG_MAKE, buffer, maxsize);
- exif_get_tag(ed, EXIF_IFD_0, EXIF_TAG_MODEL, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_0, EXIF_TAG_IMAGE_DESCRIPTION, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_DATE_TIME_ORIGINAL, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_DATE_TIME_DIGITIZED, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_TIME, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_SHUTTER_SPEED_VALUE, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FNUMBER, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_APERTURE_VALUE, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_BIAS_VALUE, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_ISO_SPEED_RATINGS, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FOCAL_LENGTH, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_MODE, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_PROGRAM, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_SCENE_CAPTURE_TYPE, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FLASH, buffer + strlen(buffer), maxsize - strlen(buffer));
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FLASH_ENERGY, buffer + strlen(buffer), maxsize - strlen(buffer));
+ while ( Exif_tag_list[i].ifd != EXIF_IFD_COUNT )
+ {
+ exif_get_tag(ed, Exif_tag_list[i].ifd, Exif_tag_list[i].tag, buffer + strlen(buffer), maxsize - strlen(buffer));
+ i++;
+ }
/* vendor specific makernote tags */
entry = exif_content_get_entry(ed->ifd[EXIF_IFD_0], EXIF_TAG_MAKE);
@@ -185,57 +326,24 @@ void exif_get_info(ExifData * ed, char *buffer, unsigned int maxsize)
{
exif_trim_spaces(buf);
- /* Nikon */
- if ( strcmp(buf, "Nikon") != 0 )
+ if ( (strcmp(buf, "NIKON CORPORATION") == 0)
+ || (strcmp(buf, "Nikon") == 0)
+ || (strcmp(buf, "NIKON") == 0)
+ )
{
/* this is a nikon camera */
-
- buf[0] = '\0';
- exif_get_tag(ed, EXIF_IFD_EXIF, EXIF_TAG_FLASH, buf, sizeof(buf));
- exif_trim_spaces(buf);
-
- if ( !(strcmp("Flash: Flash did not fire\n", buf) == 0) )
- {
- /* extended flash info if it was fired */
-
- /* Flash Setting */
- exif_get_mnote_tag(ed, 8, buffer + strlen(buffer), maxsize - strlen(buffer));
- /* Flash Mode */
- exif_get_mnote_tag(ed, 9, buffer + strlen(buffer), maxsize - strlen(buffer));
- /* flash exposure bracket value */
- exif_get_mnote_tag(ed, 24, buffer + strlen(buffer), maxsize - strlen(buffer));
- /* Flash used */
- exif_get_mnote_tag(ed, 135, buffer + strlen(buffer), maxsize - strlen(buffer));
-
- /* Flash info: control mode. */
- /* libexif does not support flash info 168 yet. so we have to parse the debug data :-( */
- buf[0] = '\0';
- exif_get_mnote_tag(ed, 168, buf, sizeof(buf));
- sscanf(buf, "(null): %u bytes unknown data: 303130%02X%*10s%02X", &length, &version, &exn_fcm);
- exn_fcm = exn_fcm & EXN_FLASH_CONTROL_MODE_MASK;
-
- if ( (exn_fcm < EXN_FLASH_CONTROL_MODES_MAX)
- && ( ((length == 22) && (version == '3')) /* Nikon FlashInfo0103 */
- || ((length == 22) && (version == '4')) /* Nikon FlashInfo0104 */
- || ((length == 21) && (version == '2')) /* Nikon FlashInfo0102 */
- || ((length == 19) && (version == '0')) /* Nikon FlashInfo0100 */
- )
- )
- {
- snprintf(buffer + strlen(buffer), maxsize - strlen(buffer), "NikonFlashControlMode: %s\n",
- EXN_NikonFlashControlModeValues[exn_fcm]);
- }
- }
- /* Lens */
- exif_get_mnote_tag(ed, 132, buffer + strlen(buffer), maxsize - strlen(buffer));
- /* Digital Vari-Program */
- exif_get_mnote_tag(ed, 171, buffer + strlen(buffer), maxsize - strlen(buffer));
-
+ exif_get_mnote_nikon_tags(ed, buffer + strlen(buffer), maxsize - strlen(buffer));
}
}
+
}
+
+ /* gps info */
+ exif_get_gps_coords(ed, buffer + strlen(buffer), maxsize - strlen(buffer));
+
}
+
}
#endif
View
@@ -26,7 +26,10 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef EXIF_H
#define EXIF_H
-#define MAX_EXIF_DATA 1024
+#include <libexif/exif-data.h>
+
+#define EXIF_MAX_DATA 1024
+#define EXIF_STD_BUF_LEN 128
extern ExifData * exif_get_data(char *path);
extern void exif_get_info(ExifData * ed, char *buffer, unsigned int maxsize);
View
@@ -0,0 +1,61 @@
+/* exif_cfg.h
+
+Copyright (C) 2012 Dennis Real.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies of the Software and its documentation and acknowledgment shall be
+given in the documentation and software packages that this Software was
+used.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+#ifndef EXIF_CFG_H
+#define EXIF_CFG_H
+
+#include <libexif/exif-data.h>
+
+typedef struct
+{
+ ExifIfd ifd; /* section */
+ ExifTag tag; /* tag */
+} t_EXIF_INFO;
+
+/* show these standard tags. section must be given first, than the tag itself */
+/* note: maker note specific tags are handled directly in exif.c up to now */
+const t_EXIF_INFO Exif_tag_list [] =
+{
+ {EXIF_IFD_0, EXIF_TAG_MAKE},
+ {EXIF_IFD_0, EXIF_TAG_MODEL},
+ {EXIF_IFD_0, EXIF_TAG_IMAGE_DESCRIPTION},
+ {EXIF_IFD_EXIF, EXIF_TAG_DATE_TIME_ORIGINAL},
+ {EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_TIME},
+ {EXIF_IFD_EXIF, EXIF_TAG_SHUTTER_SPEED_VALUE},
+ {EXIF_IFD_EXIF, EXIF_TAG_FNUMBER},
+ {EXIF_IFD_EXIF, EXIF_TAG_APERTURE_VALUE},
+ {EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_BIAS_VALUE},
+ {EXIF_IFD_EXIF, EXIF_TAG_ISO_SPEED_RATINGS},
+ {EXIF_IFD_EXIF, EXIF_TAG_FOCAL_LENGTH},
+ {EXIF_IFD_EXIF, EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM},
+ {EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_MODE},
+ {EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_PROGRAM},
+ {EXIF_IFD_EXIF, EXIF_TAG_SCENE_CAPTURE_TYPE},
+ {EXIF_IFD_EXIF, EXIF_TAG_FLASH},
+
+ {EXIF_IFD_COUNT, 0} /* end marker */
+};
+
+#endif
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