Function lodepng::ffi::lodepng_encode_file

#[no_mangle]pub unsafe extern "C" fn lodepng_encode_file(
    filename: *const c_char, 
    image: *const u8, 
    w: c_uint, 
    h: c_uint, 
    colortype: ColorType, 
    bitdepth: c_uint
) -> ErrorCode