def __init__(self, devices={}, audio_config=None, features=_stub_features):
if len(devices) <= 0:
raise ValueError('Must have at least one RF device')
gr.top_block.__init__(self, "SDR top block")
self.__running = False # duplicate of GR state we can't reach, see __start_or_stop
self.__has_a_useful_receiver = False
# Configuration
# TODO: device refactoring: Remove vestigial 'accessories'
self._sources = {k: d for k, d in devices.iteritems() if d.can_receive()}
self._accessories = accessories = {k: d for k, d in devices.iteritems() if not d.can_receive()}
self.source_name = self._sources.keys()[0] # arbitrary valid initial value
self.__rx_device_type = Enum({k: v.get_name() or k for (k, v) in self._sources.iteritems()})
# Audio early setup
self.__audio_manager = AudioManager( # must be before contexts
graph=self,
audio_config=audio_config,
stereo=features['stereo'])
# Blocks etc.
# TODO: device refactoring: remove 'source' concept (which is currently a device)
# TODO: remove legacy no-underscore names, maybe get rid of self.source
self.source = None
self.__monitor_rx_driver = None
self.monitor = MonitorSink(
signal_type=SignalType(sample_rate=10000, kind='IQ'), # dummy value will be updated in _do_connect
context=Context(self))
self.monitor.get_interested_cell().subscribe(self.__start_or_stop_later)
self.__clip_probe = MaxProbe()
# Receiver blocks (multiple, eventually)
self._receivers = {}
self._receiver_valid = {}
# collections
# TODO: No longer necessary to have these non-underscore names
self.sources = CollectionState(self._sources)
self.receivers = ReceiverCollection(self._receivers, self)
self.accessories = CollectionState(accessories)
self.__telemetry_store = TelemetryStore()
# Flags, other state
self.__needs_reconnect = [u'initialization']
self.__in_reconnect = False
self.receiver_key_counter = 0
self.receiver_default_state = {}
self.__cpu_calculator = LazyRateCalculator(lambda: time.clock())
# Initialization
def hookup_vfo_callback(k, d): # function so as to not close over loop variable
d.get_vfo_cell().subscribe(lambda: self.__device_vfo_callback(k))
for k, d in devices.iteritems():
hookup_vfo_callback(k, d)
self._do_connect()
def setUp(self):
self.tb = gr.top_block()
self.p = AudioManager(graph=self.tb, audio_config=None, stereo=False)
