void photo_image_free(photo_image_p image)
struct photo_image_t * photo_image_p
int photo_image_read(photo_image_p image, const char *filename)
void photo_image_set_size(photo_image_p image, int image_width, int image_height)
int photo_image_write(photo_image_p image, const char *filename)
photo_image_p photo_image_initialize()