int load_image(struct image *img, const char *fname);
int save_image(struct image *img, const char *fname);
+int conv_image_rgb565(struct image *img16, struct image *img);
+
int cmp_image(struct image *a, struct image *b);
void blit_image(struct image *src, int sx, int sy, int w, int h, struct image *dst, int dx, int dy);