181         line = self.adbout.readline()
185       if line is None:
187       print line
190         timestamp = self._parse_timestamp(line)
198       if line.find(': position') != -1:
199         self.parse_velocity_x = self._get_following_number(line, 'vx=')
200         self.parse_velocity_y = self._get_following_number(line, 'vy=')
201         self.parse_velocity_magnitude = self._get_following_number(line, 'speed=')
206       if line.find(': OLD') != -1:
207         self.parse_old_velocity_x = self._get_following_number(line, 'vx=')
208         self.parse_old_velocity_y = self._get_following_number(line, 'vy=')
209         self.parse_old_velocity_magnitude = self._get_following_number(line, 'speed=')
244   def _get_following_word(self, line, prefix):  argument
245     prefix_index = line.find(prefix)
249     delim_index = line.find(',', start_index)
251       return line[start_index:]
253       return line[start_index:delim_index]
256   def _get_following_number(self, line, prefix):  argument
257     word = self._get_following_word(line, prefix)
269   def _parse_timestamp(self, line):  argument
270     return datetime.strptime(line[0:18], '%m-%d %H:%M:%S.%f')