speed-cam.py 文件源码

def __init__(self, resolution=(CAMERA_WIDTH, CAMERA_HEIGHT), framerate=CAMERA_FRAMERATE, rotation=0,
                                                   hflip=CAMERA_HFLIP, vflip=CAMERA_VFLIP):
        # initialize the camera and stream
        try:
           self.camera = PiCamera()
        except:
           print("ERROR - PiCamera Already in Use by Another Process")
           print("INFO  - Exit %s" % progName)
           quit()
        self.camera.resolution = resolution
        self.camera.rotation = rotation
        self.camera.framerate = framerate
        self.camera.hflip = hflip
        self.camera.vflip = vflip
        self.rawCapture = PiRGBArray(self.camera, size=resolution)
        self.stream = self.camera.capture_continuous(self.rawCapture,
            format="bgr", use_video_port=True)

        # initialize the frame and the variable used to indicate
        # if the thread should be stopped
        self.frame = None
        self.stopped = False