#[no_mangle]
extern "C" fn stream_renderer_transfer_read_iov(
    _handle: u32,
    _ctx_id: u32,
    _level: u32,
    _stride: u32,
    _layer_stride: u32,
    _box_: *mut virgl_box,
    _offset: u64,
    _iov: *mut iovec,
    _iovec_cnt: c_int
) -> c_int