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add most useful exif data to metadata

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This commit is contained in:
fredrsf 2020-08-04 12:24:15 +03:00
parent af781a34dd
commit 856fb7405c
5 changed files with 542 additions and 70 deletions
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37
vips.h
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@ -18,11 +18,7 @@
#define VIPS_ANGLE_D270 VIPS_ANGLE_270
#endif
#define EXIF_IFD0_MAKE "exif-ifd0-Make"
#define EXIF_IFD0_MODEL "exif-ifd0-Model"
#define EXIF_IFD0_ORIENTATION "exif-ifd0-Orientation"
#define EXIF_IFD0_SOFTWARE "exif-ifd0-Software"
#define EXIF_IFD0_DATETIME "exif-ifd0-DateTime"
#define INT_TO_GBOOLEAN(bool) (bool > 0 ? TRUE : FALSE)
@ -234,34 +230,19 @@ vips_exif_tag(VipsImage *image, const char *tag) {
return "";
}
const char *
vips_exif_make(VipsImage *image) {
return vips_exif_tag(image, EXIF_IFD0_MAKE);
}
const char *
vips_exif_model(VipsImage *image) {
return vips_exif_tag(image, EXIF_IFD0_MODEL);
int
vips_exif_tag_to_int(VipsImage *image, const char *tag) {
int value = 0;
const char *exif = vips_exif_tag(image, tag);
if (strcmp(exif, "")) {
value = atoi(&exif[0]);
}
return value;
}
int
vips_exif_orientation(VipsImage *image) {
int orientation = 0;
const char *exif = vips_exif_tag(image, EXIF_IFD0_ORIENTATION);
if (strcmp(exif, "")) {
orientation = atoi(&exif[0]);
}
return orientation;
}
const char *
vips_exif_software(VipsImage *image) {
return vips_exif_tag(image, EXIF_IFD0_SOFTWARE);
}
const char *
vips_exif_datetime(VipsImage *image) {
return vips_exif_tag(image, EXIF_IFD0_DATETIME);
return vips_exif_tag_to_int(image, EXIF_IFD0_ORIENTATION);
}
int