CameraSourceConfig.CameraFacing Direction of the camera facing relative to device screen. 


DetectionTaskCallback<ResultT> Interface for defining a post-processing action to be executed for each detection.This is used by CameraXSource for the pipeline to feed camera frames to detectors and invoke callbacks that are set by developers. 


CameraSourceConfig Config class to hold different camera source settings. 
CameraSourceConfig.Builder Builder for CameraSourceConfig. 
CameraXSource Manages the camera in conjunction with an underlying Detector and DetectionTaskCallback