def get_headphone_source(self, target):
if target not in self.get_headphone_labels():
raise ValueError('Invalid argument for headphone')
state = AvcAudio.get_selector_state(self.unit.fcp, 0, 'current',
self.__SELECTOR_FB)
if state == 0x01:
return 'aux-1/2'
elif state == 0x00:
for i, elems in enumerate(self.mixers):
in_ch = elems[1][0]
data = AvcAudio.get_processing_mixer_state(
self.unit.fcp, 0, 'current', self.__PROCESSING_OUT_FB,
self.__PROCESSING_IN_FB, in_ch, self.__PROCESSING_OUT_CH)
if data[0] == 0x00 and data[1] == 0x00:
return self.labels['mixers'][i]
# No sources are set. For convenience, set 'mixer-1/2'.
self.set_headphone_source('headphone-1/2', 'mixer-1/2')
return 'mixer-1/2'
def get_mixer_routing(self, target, source):
in_fb, in_ch, out_fb, out_ch = self._refer_mixer_data(target, source)
data = AvcAudio.get_processing_mixer_state(self.unit.fcp, 0, 'current',
out_fb, in_fb, in_ch,
out_ch)
return data[0] == 0x00 and data[1] == 0x00
