summaryrefslogtreecommitdiff
path: root/src/exif.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/exif.c')
-rw-r--r--src/exif.c465
1 files changed, 237 insertions, 228 deletions
diff --git a/src/exif.c b/src/exif.c
index 9ad9dae..18025c2 100644
--- a/src/exif.c
+++ b/src/exif.c
@@ -42,118 +42,117 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/* remove all spaces on the right end of a string */
void exif_trim_spaces(char *str)
{
- char *end;
-
- for (end = str; *str!='\0'; str++)
- {
- if (*str != ' ')
- {
- end = str + 1;
- }
- }
- *end = '\0';
+ char *end;
+
+ for (end = str; *str != '\0'; str++) {
+ if (*str != ' ') {
+ end = str + 1;
+ }
+ }
+ *end = '\0';
}
/* show given exif tag content with tag name */
-void exif_get_tag(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, unsigned int maxsize)
+void exif_get_tag(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: %s\n", exif_tag_get_name_in_ifd(tag,ifd), s));
- snprintf(buffer, (size_t)maxsize, "%s: %s\n", exif_tag_get_name_in_ifd(tag,ifd), s);
- }
- }
- }
+ 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: %s\n",
+ exif_tag_get_name_in_ifd(tag, ifd), s));
+ snprintf(buffer, (size_t) maxsize,
+ "%s: %s\n",
+ exif_tag_get_name_in_ifd(tag,
+ ifd), s);
+ }
+ }
+ }
}
/* show given exif tag content without tag name */
-void exif_get_tag_content(ExifData *d, ExifIfd ifd, ExifTag tag, char* buffer, unsigned int maxsize)
+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 - %s\n", exif_tag_get_name_in_ifd(tag,ifd), s));
- snprintf(buffer, (size_t)maxsize, "%s", s);
- }
- }
- }
+ 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 - %s\n",
+ exif_tag_get_name_in_ifd(tag, ifd), s));
+ snprintf(buffer, (size_t) maxsize, "%s",
+ s);
+ }
+ }
+ }
}
/* Show the given MakerNote tag if it exists */
-void exif_get_mnote_tag(ExifData *d, unsigned int tag, char* buffer, unsigned int maxsize)
+void exif_get_mnote_tag(ExifData * d, unsigned int tag, char *buffer,
+ unsigned int maxsize)
{
- ExifMnoteData *mn = NULL;
- int i, num;
- char buf[1024];
-
- if ( (d!=NULL) && (buffer!=NULL) && (maxsize > 0) )
- {
- mn = exif_data_get_mnote_data(d);
- }
- else
- {
- return;
- }
-
- if ( mn != NULL )
- {
- num = exif_mnote_data_count(mn);
-
- /* Loop through all MakerNote tags, searching for the desired one */
- for (i=0; i < num; ++i)
- {
- D(("%d/%d %d 0x%2x %s; %s\n", i, num, exif_mnote_data_get_id(mn, i),
- exif_mnote_data_get_id(mn, i),
- exif_mnote_data_get_name(mn,i),
- exif_mnote_data_get_title(mn, i) ));
-
- if (exif_mnote_data_get_id(mn, i) == tag)
- {
- if (exif_mnote_data_get_value(mn, i, buf, sizeof(buf)))
- {
- /* Don't bother printing it if it's entirely blank */
- exif_trim_spaces(buf);
- if (*buf != '\0')
- {
- D(("%s\n", buf));
- snprintf(buffer, (size_t)maxsize, "%s: %s\n", exif_mnote_data_get_title(mn, i), buf);
- }
- }
- }
- }
- }
+ ExifMnoteData *mn = NULL;
+ int i, num;
+ char buf[1024];
+
+ if ((d != NULL) && (buffer != NULL) && (maxsize > 0)) {
+ mn = exif_data_get_mnote_data(d);
+ } else {
+ return;
+ }
+
+ if (mn != NULL) {
+ num = exif_mnote_data_count(mn);
+
+ /* Loop through all MakerNote tags, searching for the desired one */
+ for (i = 0; i < num; ++i) {
+ D(("%d/%d %d 0x%2x %s; %s\n", i, num,
+ exif_mnote_data_get_id(mn, i),
+ exif_mnote_data_get_id(mn, i),
+ exif_mnote_data_get_name(mn, i),
+ exif_mnote_data_get_title(mn, i)));
+
+ if (exif_mnote_data_get_id(mn, i) == tag) {
+ if (exif_mnote_data_get_value
+ (mn, i, buf, sizeof(buf))) {
+ /* Don't bother printing it if it's entirely blank */
+ exif_trim_spaces(buf);
+ if (*buf != '\0') {
+ D(("%s\n", buf));
+ snprintf(buffer,
+ (size_t) maxsize,
+ "%s: %s\n",
+ exif_mnote_data_get_title
+ (mn, i), buf);
+ }
+ }
+ }
+ }
+ }
}
@@ -161,80 +160,75 @@ void exif_get_mnote_tag(ExifData *d, unsigned int tag, char* buffer, unsigned in
/* get gps coordinates if available */
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;
- }
+ 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)
+ExifData *exif_get_data(char *path)
{
- ExifData *ed = NULL;
+ ExifData *ed = NULL;
- /* Load an ExifData object from an EXIF file */
- ed = exif_data_new_from_file(path);
- if (ed == NULL)
- {
- D(("File not readable or no Exif data present in %s\n", path));
- }
+ /* Load an ExifData object from an EXIF file */
+ ed = exif_data_new_from_file(path);
+ if (ed == NULL) {
+ D(("File not readable or no Exif data present in %s\n",
+ path));
+ }
- return(ed);
+ return (ed);
}
@@ -243,76 +237,91 @@ ExifData * exif_get_data(char *path)
/* get all exif data in readable form */
void exif_get_info(ExifData * ed, char *buffer, unsigned int maxsize)
{
- ExifEntry *entry = NULL;
- char buf[EXIF_STD_BUF_LEN];
- unsigned short int i = 0;
-
- if ( (buffer == NULL) || (maxsize == 0) )
- {
- return;
- }
- else if (ed == NULL)
- {
- snprintf(buffer, (size_t)maxsize, "%s\n", "No Exif data in file.");
- return;
- }
- else
- {
- /* show normal exif tags. list must be defined in exif_cfg.h */
- while ( (i < USHRT_MAX) && (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++;
- }
-
- /* show vendor specific makernote tags */
- entry = exif_content_get_entry(ed->ifd[EXIF_IFD_0], EXIF_TAG_MAKE);
- if (entry != NULL)
- {
-
- if (exif_entry_get_value(entry, buf, sizeof(buf)))
- {
- exif_trim_spaces(buf);
-
- if ( (strcmp(buf, "NIKON CORPORATION") == 0)
- || (strcmp(buf, "Nikon") == 0)
- || (strcmp(buf, "NIKON") == 0)
- )
- {
- /* show nikon makernote exif tags. list must be defined in exif_cfg.h */
- i=0;
- while ( (i < USHRT_MAX) && (Exif_makernote_nikon_tag_list[i] != EXIF_NIKON_MAKERNOTE_END) )
- {
- exn_get_mnote_nikon_tags(ed, Exif_makernote_nikon_tag_list[i],
- buffer + strlen(buffer), maxsize - strlen(buffer));
- i++;
- }
-
- }
- else if ( (strcmp(buf, "Canon") == 0) )
- {
- /* show canon makernote exif tags. list must be defined in exif_cfg.h */
- i=0;
- while ( (i < USHRT_MAX) && (Exif_makernote_canon_tag_list[i] != EXIF_CANON_MAKERNOTE_END) )
- {
- exc_get_mnote_canon_tags(ed, Exif_makernote_canon_tag_list[i],
- buffer + strlen(buffer), maxsize - strlen(buffer));
- i++;
- }
-
- }
- else
- {
- }
- }
-
- }
-
- /* show gps coordinates */
- exif_get_gps_coords(ed, buffer + strlen(buffer), maxsize - strlen(buffer));
-
- }
-
+ ExifEntry *entry = NULL;
+ char buf[EXIF_STD_BUF_LEN];
+ unsigned short int i = 0;
+
+ if ((buffer == NULL) || (maxsize == 0)) {
+ return;
+ } else if (ed == NULL) {
+ snprintf(buffer, (size_t) maxsize, "%s\n",
+ "No Exif data in file.");
+ return;
+ } else {
+ /* show normal exif tags. list must be defined in exif_cfg.h */
+ while ((i < USHRT_MAX)
+ && (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++;
+ }
+
+ /* show vendor specific makernote tags */
+ entry =
+ exif_content_get_entry(ed->ifd[EXIF_IFD_0],
+ EXIF_TAG_MAKE);
+ if (entry != NULL) {
+
+ if (exif_entry_get_value(entry, buf, sizeof(buf))) {
+ exif_trim_spaces(buf);
+
+ if ((strcmp(buf, "NIKON CORPORATION") == 0)
+ || (strcmp(buf, "Nikon") == 0)
+ || (strcmp(buf, "NIKON") == 0)
+ ) {
+ /* show nikon makernote exif tags. list must be defined in exif_cfg.h */
+ i = 0;
+ while ((i < USHRT_MAX)
+ &&
+ (Exif_makernote_nikon_tag_list
+ [i] !=
+ EXIF_NIKON_MAKERNOTE_END))
+ {
+ exn_get_mnote_nikon_tags
+ (ed,
+ Exif_makernote_nikon_tag_list
+ [i],
+ buffer +
+ strlen(buffer),
+ maxsize -
+ strlen(buffer));
+ i++;
+ }
+
+ } else if ((strcmp(buf, "Canon") == 0)) {
+ /* show canon makernote exif tags. list must be defined in exif_cfg.h */
+ i = 0;
+ while ((i < USHRT_MAX)
+ &&
+ (Exif_makernote_canon_tag_list
+ [i] !=
+ EXIF_CANON_MAKERNOTE_END))
+ {
+ exc_get_mnote_canon_tags
+ (ed,
+ Exif_makernote_canon_tag_list
+ [i],
+ buffer +
+ strlen(buffer),
+ maxsize -
+ strlen(buffer));
+ i++;
+ }
+
+ } else {
+ }
+ }
+
+ }
+
+ /* show gps coordinates */
+ exif_get_gps_coords(ed, buffer + strlen(buffer),
+ maxsize - strlen(buffer));
+
+ }
+
}
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-31 15:33:54 +0000