base.py 文件源码

def make_frame(self, t):
        '''
        Callback to return an image from from our tub records.
        This is called from the VideoClip as it references a time.
        We don't use t to reference the frame, but instead increment
        a frame counter. This assumes sequential access.
        '''
        self.iRec = self.iRec + 1

        if self.iRec >= self.num_rec - 1:
            return None

        rec = self.tub.get_record(self.iRec)
        image = rec['cam/image_array']

        return image # returns a 8-bit RGB array