OImages.index8_withinherit oimageinherit Index8.elt mapinherit OColor.rgbmapmethod sub : int -> int -> int -> int -> index8_classmethod blit : int -> int -> index8_class -> int -> int -> int -> int -> unitmethod get_color : int -> int -> Color.rgbmethod unsafe_get_color : int -> int -> Color.rgbmethod transparent : Index8.eltmethod set_transparent : Index8.elt -> unitmethod to_rgb24 : rgb24_classmethod to_rgba32 : rgba32_class