def next_chunk(self):
"""
:returns: The next chunk of data points in the form of a SignalWave
:rtype: :class:`tendril.utils.types.signalbase.SignalWave`
"""
rval = copy.copy(self.point_buffer)
self.point_buffer = SignalWave(rval.unitclass,
points=deque([rval.pop()],
maxlen=rval._buffer_size),
spacing=rval._spacing,
ts0=rval._ts0,
buffer_size=rval._buffer_size,
use_point_ts=rval._use_point_ts)
return rval
def reset_buffer(self, unitclass=DummyUnit):
"""
Resets the point buffer to a new
:class:`tendril.utils.types.signalbase.SignalWave` with the unitclass
as specified by the parameter. Any data presently within it will be
lost.
:param unitclass: Class of Unit that the Wave points are composed of.
"""
# logger.debug("Resetting buffer to type : " + repr(unitclass))
self.point_buffer = SignalWave(unitclass,
spacing=TimeDelta(microseconds=100000),
ts0=timestamp_factory.now(),
buffer_size=1000,
use_point_ts=False)
