Function lv_image_decoder_set_get_area_cb

pub unsafe extern "C" fn lv_image_decoder_set_get_area_cb(
    decoder: *mut _lv_image_decoder_t,
    read_line_cb: Option<unsafe extern "C" fn(*mut _lv_image_decoder_t, *mut _lv_image_decoder_dsc_t, *const lv_area_t, *mut lv_area_t) -> u32>,
)