- def start(self, metadata):
- self.out_proto = self.add(srd.OUTPUT_PROTO, 'usb_signalling')
- self.out_ann = self.add(srd.OUTPUT_ANN, 'usb_signalling')
- self.bitrate = bitrates[self.options['signalling']]
- self.bitwidth = float(metadata['samplerate']) / float(self.bitrate)
- self.halfbit = int(self.bitwidth / 2)