camera.py 文件源码

def init_cams(self, which_cam_idx):

        # gets a list of available cameras.
        self.clist = pygame.camera.list_cameras()
        print (self.clist)

        if not self.clist:
            raise ValueError("Sorry, no cameras detected.")

        try:
            cam_id = self.clist[which_cam_idx]
        except IndexError:
            cam_id = self.clist[0]

        # creates the camera of the specified size and in RGB colorspace
        self.camera = pygame.camera.Camera(cam_id, self.size, "RGB")

        # starts the camera
        self.camera.start()

        self.clock = pygame.time.Clock()

        # create a surface to capture to.  for performance purposes, you want the
        # bit depth to be the same as that of the display surface.
        self.snapshot = pygame.surface.Surface(self.size, 0, self.display)