Rough approximation of our approach to odemis SI acquisition

odemis_acq.py

def approx_acquisition_method():
    self.spect.data.synchronizedOn(self.escan.newPosition)
    startt = time.time()

    self.spect.data.subscribe(self.receive_spect_point)

    sed_data = self.sed.data.get()
    # wait the last point is fully acquired
    self.acq_complete.wait()

def receive_spect_point(self, dataflow, data):
    """
    callback for each point scanned as seen by the spectrometer
    """
    self.acq_spect_buf.append(data)
    self.acq_left -= 1
    if self.acq_left <= 0:
        dataflow.unsubscribe(self.receive_spect_point)
        self.acq_complete.set()