def set_sampling_rate(self, rate):
if self.unit.get_property('streaming'):
raise ValueError('Packet streaming already runs.')
if rate not in self.get_sampling_rate_labels():
raise ValueError('Invalid argument for sampling rate')
old_timeout = self.unit.fcp.get_property('timeout')
# The unit tends to respond with larger interval from these requests.
self.unit.fcp.set_property('timeout', 500)
AvcConnection.set_plug_signal_format(self.unit.fcp, 'input', 0, rate)
AvcConnection.set_plug_signal_format(self.unit.fcp, 'output', 0, rate)
self.unit.fcp.set_property('timeout', old_timeout)
def set_sampling_rate(self, rate):
if self.get_property('streaming'):
raise OSError('Packet streaming starts')
curr_rate = AvcConnection.get_plug_signal_format(self.fcp, 'input', 0)
for mode, rates in self._RATE_MODES.items():
if curr_rate in rates:
break
else:
raise OSError('Invalid state for sampling rate.')
if rate not in rates:
raise ValueError('Invalid argument for sampling rate.')
AvcConnection.set_plug_signal_format(self.fcp, 'input', 0, rate)
AvcConnection.set_plug_signal_format(self.fcp, 'output', 0, rate)
def set_stream_formats(self, playback, capture):
if playback not in self.supported_stream_formats['playback']:
raise ValueError('Invalid argument for playback stream format')
if capture:
if self._playback_only:
raise ValueError('This unit is playback only')
if capture not in self.supported_stream_formats['capture']:
raise ValueError('Invalid argument for capture stream format')
if playback['sampling-rate'] != capture['sampling-rate']:
raise ValueError(
'Sampling rate mis-match between playback and capture')
if self._assumed:
rate = playback['sampling-rate']
AvcConnection.set_plug_signal_format(self.fcp, 'output', 0, rate)
AvcConnection.set_plug_signal_format(self.fcp, 'input', 0, rate)
else:
AvcStreamFormatInfo.set_format(self.fcp, 'input', 0, playback)
if not self._playback_only:
AvcStreamFormatInfo.set_format(self.fcp, 'output', 0, capture)
def set_sampling_rate(self, rate):
if rate not in self.__SUPPORTED_SAMPLING_RATES:
raise ValueError('Invalid argument for sampling rate')
AvcConnection.set_plug_signal_format(self.fcp, 'input', 0, rate)
AvcConnection.set_plug_signal_format(self.fcp, 'output', 0, rate)