  
  void cameras_open(MultiCameraState *s) {}
  void cameras_close(MultiCameraState *s) {}
  void camera_autoexposure(CameraState *s, float grey_frac) {}
  void camera_process_rear(MultiCameraState *s, CameraState *c, int cnt) {}
  
  void cameras_run(MultiCameraState *s) {
    std::thread t = start_process_thread(s, "processing", &s->rear, camera_process_rear);
    set_thread_name("frame_streaming");
    run_frame_stream(s->rear, "roadCameraState");
 
</s> remove   std::thread t = start_process_thread(s, "processing", &s->rear, camera_process_rear);
 </s> add   std::thread t = start_process_thread(s, &s->road_cam, process_road_camera); </s> remove   run_frame_stream(s->rear, "roadCameraState");
 </s> add   run_frame_stream(s->road_cam, "roadCameraState"); </s> remove   camera_init(v, &s->front, CAMERA_ID_OV8865, 10, device_id, ctx,
 </s> add   camera_init(v, &s->driver_cam, CAMERA_ID_OV8865, 10, device_id, ctx, </s> remove   camera_close(&s->rear);
  camera_close(&s->front);
 </s> add   camera_close(&s->road_cam);
  camera_close(&s->driver_cam); </s> remove void camera_process_front(MultiCameraState *s, CameraState *c, int cnt) {
  common_camera_process_front(s->sm_front, s->pm, c, cnt);
 </s> add void process_driver_camera(MultiCameraState *s, CameraState *c, int cnt) {
  common_process_driver_camera(s->sm, s->pm, c, cnt);
void process_road_camera(MultiCameraState *s, CameraState *c, int cnt) {}
  
  void cameras_open(MultiCameraState *s) {}
  void cameras_close(MultiCameraState *s) {}
  void camera_autoexposure(CameraState *s, float grey_frac) {}
void process_road_camera(MultiCameraState *s, CameraState *c, int cnt) {}
  
  void cameras_run(MultiCameraState *s) {
    std::thread t = start_process_thread(s, "processing", &s->rear, camera_process_rear);
    set_thread_name("frame_streaming");
    run_frame_stream(s->rear, "roadCameraState");
keep keep keep keep replace keep keep keep keep keep
 camerad: rename variables&functions to follow new convention (#20096)

* rename CameraState variables to follow new convention

* continue

* rename camera_process functions

* qcom:rename exposure related variables

* continue

* update commments

* bool real -> bool is_road_cam

* rename sm_front -> sm

* remove paramater tname from start_process_thread

* rename rhd_front to is_rhd

* remove unused varialble name from struct CameraInfo

* rename env_send_xxx

* rename cap_front to cap_driver,cap_rear to cap_road

* rename xxx_camera_process to process_xxx_camera

* update snapshot.py 
selfdrive/camerad/cameras/camera_frame_stream.cc