pub unsafe extern "C" fn lv_img_decoder_built_in_read_line(
    decoder: *mut lv_img_decoder_t,
    dsc: *mut lv_img_decoder_dsc_t,
    x: lv_coord_t,
    y: lv_coord_t,
    len: lv_coord_t,
    buf: *mut u8
) -> lv_res_t