@type t() :: %APM.Message.CameraStatus{
  cam_idx: MAVLink.Types.uint8_t(),
  event_id: APM.Types.camera_status_types(),
  img_idx: MAVLink.Types.uint16_t(),
  p1: Float32,
  p2: Float32,
  p3: Float32,
  p4: Float32,
  target_system: MAVLink.Types.uint8_t(),
  time_usec: MAVLink.Types.uint64_t()
}