Function libcamera_request_add_buffer_with_fence 

pub unsafe extern "C" fn libcamera_request_add_buffer_with_fence(
    request: *mut libcamera_request_t,
    stream: *const libcamera_stream_t,
    buffer: *mut libcamera_framebuffer_t,
    fence: *mut libcamera_fence_t,
) -> c_int