def next_command(self, delta):
samples = self.signal.acquire()
self.calls += 1
if samples and samples > 0:
matrix = self.signal.getdata(samples)
raw_command = RawSignalCommand(delta, matrix, samples/self.signal.channels(), self.signal.channels(), self.timer)
raw_command.matrix = matrix
raw_command.data_matrix = matrix[:, :-RawSignalCommand.TriggerCount]
else:
raise EOFError("FileSignalReceiver: FileSignal complete; calls = "+str(self.calls))
assert raw_command
return raw_command
