Function sixel_sys::sixel_helper_normalize_pixelformat

pub unsafe extern "C" fn sixel_helper_normalize_pixelformat(
    dst: *mut c_uchar, 
    dst_pixelformat: *mut PixelFormat, 
    src: *const c_uchar, 
    src_pixelformat: PixelFormat, 
    width: c_int, 
    height: c_int
) -> Status