#define KEYWORD_KEY "Xmp.dc.subject"
#define ORIENTATION_KEY "Xmp.tiff.Orientation"
+void metadata_cache_free(FileData *fd);
+
gboolean metadata_write_queue_remove(FileData *fd);
gboolean metadata_write_queue_remove_list(GList *list);
gboolean metadata_write_perform(FileData *fd);