diff options
Diffstat (limited to 'src/exif.c')
| -rw-r--r-- | src/exif.c | 252 |
1 files changed, 180 insertions, 72 deletions
@@ -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 |