pub unsafe extern "C" fn gst_video_scaler_2d(
    hscale: *mut GstVideoScaler,
    vscale: *mut GstVideoScaler,
    format: GstVideoFormat,
    src: gpointer,
    src_stride: c_int,
    dest: gpointer,
    dest_stride: c_int,
    x: c_uint,
    y: c_uint,
    width: c_uint,
    height: c_uint
)