# print(dbus_filter) # /org/example/ca/server
def cb_server_signal_emission(*args):
"""
Callback on emitting signal from server
Emitted signal is the value of the counter
Data is in args[4]. The first item in a tuple.args[4][0]
"""
data = args[4][0]
print("Client:", data)
if __name__=="__main__":
print("Client Starting...")
# Subscribe to bus to monitor for server signal emissions
# dbus_filter. E.g. /org/example/ca/server
bus.subscribe(object = dbus_filter,
signal_fired = cb_server_signal_emission)
loop.run()
'''
Example of client_test.py...
$ python3 client_test.py
Client Starting...
Client: The random integer for this second is 12
Client: The random integer for this second is 98
Client: The random integer for this second is 6
'''
def main(api_endpoint, credentials, project_id, device_model_id, device_id,
device_config, lang, verbose, input_audio_file, output_audio_file,
audio_sample_rate, audio_sample_width, audio_iter_size,
audio_block_size, audio_flush_size, grpc_deadline, once, *args,
**kwargs):
"""Samples for the Google Assistant API.
Examples:
Run the sample with microphone input and speaker output:
$ python -m googlesamples.assistant
Run the sample with file input and speaker output:
$ python -m googlesamples.assistant -i <input file>
Run the sample with file input and output:
$ python -m googlesamples.assistant -i <input file> -o <output file>
"""
# Setup logging.
logging.basicConfig(level=logging.DEBUG if verbose else logging.INFO)
# Load OAuth 2.0 credentials.
try:
with open(credentials, 'r') as f:
credentials = google.oauth2.credentials.Credentials(token=None,
**json.load(f))
http_request = google.auth.transport.requests.Request()
credentials.refresh(http_request)
except Exception as e:
logging.error('Error loading credentials: %s', e)
logging.error('Run google-oauthlib-tool to initialize '
'new OAuth 2.0 credentials.')
sys.exit(-1)
# D-Bus preparation
cv_trigger = Condition(Lock())
eventq = Queue()
dbus_obj = DBusSignals()
loop = GLib.MainLoop()
system_bus = SystemBus()
def dbus_handler(sender, object, iface, signal, params):
# logging.info(sender)
# logging.info(object)
# logging.info(signal)
# logging.info(params)
logging.debug('Received D-Bus signal: {}'.format(signal))
if signal == 'trigger':
cv_trigger.acquire()
cv_trigger.notify()
cv_trigger.release()
pub = system_bus.publish("io.respeaker.respeakerd", dbus_obj)
sub = system_bus.subscribe(iface='respeakerd.signal',
signal_fired=dbus_handler)
def exit_dbus():
sub.unsubscribe()
pub.unpublish()
# Create an authorized gRPC channel.
grpc_channel = google.auth.transport.grpc.secure_authorized_channel(
credentials, http_request, api_endpoint)
logging.info('Connecting to %s', api_endpoint)
# Configure audio source and sink.
audio_device = None
if input_audio_file:
audio_source = audio_helpers.WaveSource(
open(input_audio_file, 'rb'),
sample_rate=audio_sample_rate,
sample_width=audio_sample_width)
else:
audio_source = audio_device = (audio_device
or audio_helpers.SoundDeviceStream(
sample_rate=audio_sample_rate,
sample_width=audio_sample_width,
block_size=audio_block_size,
flush_size=audio_flush_size))
if output_audio_file:
audio_sink = audio_helpers.WaveSink(open(output_audio_file, 'wb'),
sample_rate=audio_sample_rate,
sample_width=audio_sample_width)
else:
audio_sink = audio_device = (audio_device
or audio_helpers.SoundDeviceStream(
sample_rate=audio_sample_rate,
sample_width=audio_sample_width,
block_size=audio_block_size,
flush_size=audio_flush_size))
# Create conversation stream with the given audio source and sink.
conversation_stream = audio_helpers.ConversationStream(
source=audio_source,
sink=audio_sink,
iter_size=audio_iter_size,
sample_width=audio_sample_width,
)
if not device_id or not device_model_id:
try:
with open(device_config) as f:
device = json.load(f)
device_id = device['id']
device_model_id = device['model_id']
logging.info("Using device model %s and device id %s",
device_model_id, device_id)
except Exception as e:
logging.warning('Device config not found: %s' % e)
logging.info('Registering device')
if not device_model_id:
logging.error('Option --device-model-id required '
'when registering a device instance.')
exit_dbus()
sys.exit(-1)
if not project_id:
logging.error('Option --project-id required '
'when registering a device instance.')
exit_dbus()
sys.exit(-1)
device_base_url = ('https://%s/v1alpha2/projects/%s/devices' %
(api_endpoint, project_id))
device_id = str(uuid.uuid1())
payload = {
'id': device_id,
'model_id': device_model_id,
'client_type': 'SDK_SERVICE'
}
session = google.auth.transport.requests.AuthorizedSession(
credentials)
r = session.post(device_base_url, data=json.dumps(payload))
if r.status_code != 200:
logging.error('Failed to register device: %s', r.text)
exit_dbus()
sys.exit(-1)
logging.info('Device registered: %s', device_id)
pathlib.Path(os.path.dirname(device_config)).mkdir(exist_ok=True)
with open(device_config, 'w') as f:
json.dump(payload, f)
device_handler = device_helpers.DeviceRequestHandler(device_id)
@device_handler.command('action.devices.commands.OnOff')
def onoff(on):
if on:
logging.info('Turning device on')
else:
logging.info('Turning device off')
# If file arguments are supplied:
# exit after the first turn of the conversation.
if input_audio_file or output_audio_file:
with SampleAssistant(lang, device_model_id, device_id,
conversation_stream, grpc_channel, grpc_deadline,
device_handler, eventq) as assistant:
dbus_obj.ready()
assistant.assist()
exit_dbus()
return
# else it's a long term run
def assistant_thread(conversation_stream_):
with SampleAssistant(lang, device_model_id, device_id,
conversation_stream_, grpc_channel, grpc_deadline,
device_handler, eventq) as assistant:
dbus_obj.ready()
# If no file arguments supplied:
# keep recording voice requests using the microphone
# and playing back assistant response using the speaker.
# When the once flag is set, don't wait for a trigger. Otherwise, wait.
wait_for_user_trigger = not once
# capture device should always be opened when not playing
conversation_stream_.start_recording()
while True:
if wait_for_user_trigger:
logging.info("speak hotword to wake up")
cv_trigger.acquire()
cv_trigger.wait()
cv_trigger.release()
logging.info("wake up!")
continue_conversation = False
try:
continue_conversation = assistant.assist()
except PortAudioError as e:
logging.warn('PortAudio Error: {}'.format(str(e)))
eventq.put('on_idle')
# wait for user trigger if there is no follow-up turn in
# the conversation.
wait_for_user_trigger = not continue_conversation
# If we only want one conversation, break.
if once and (not continue_conversation):
break
exit_dbus()
logging.debug('Exit from the assistant thread...')
loop.quit()
def event_process_thread():
while True:
event = eventq.get()
if event == 'on_listen':
dbus_obj.on_listen()
elif event == 'on_think':
dbus_obj.on_think()
elif event == 'on_speak':
dbus_obj.on_speak()
elif event == 'on_idle':
dbus_obj.on_idle()
time.sleep(0.5)
def on_exit(sig):
exit_dbus()
loop.quit()
logging.info("Quit...")
setup_signals(
signals=[sys_signal.SIGINT, sys_signal.SIGTERM, sys_signal.SIGHUP],
handler=on_exit)
# make conversation_stream writable inside thread
thrd1 = Thread(target=assistant_thread, args=(conversation_stream, ))
thrd2 = Thread(target=event_process_thread)
thrd1.daemon = True
thrd2.daemon = True
thrd1.start()
thrd2.start()
logging.info("Glib mainloop start running...")
loop.run()
dbus_obj.on_idle()
class BusClient:
"""
Base class to use to implement a DbusClient using the sink services
It automatically manage sink connection/disconnection and offers some abstraction
of dbus
"""
def __init__(self, logger=None, c_extension=True, ignored_ep_filter=None):
# logger
self.logger = logger or logging.getLogger(__name__)
# Main loop for events
self.loop = GLib.MainLoop()
# Connect to session bus
self.bus = SystemBus()
# Manage sink list
self.sink_manager = SinkManager(
bus=self.bus,
on_new_sink_cb=self.on_sink_connected,
on_sink_removal_cb=self.on_sink_disconnected,
on_stack_started=self.on_stack_started,
logger=self.logger,
)
self.ignore_ep_filter = ignored_ep_filter
# Register for packet on Dbus
if c_extension:
self.logger.info("Starting dbus client with c extension")
self.c_extension_thread = DbusEventHandler(
self._on_data_received_c, self.logger)
else:
self.logger.info("Starting dbus client without c extension")
# Subscribe to all massages received from any sink (no need for
# connected sink for that)
self.bus.subscribe(
signal="MessageReceived",
object="/com/wirepas/sink",
signal_fired=self._on_data_received,
)
self.c_extension_thread = None
def _on_data_received_c(
self,
sender,
timestamp,
src,
dst,
src_ep,
dst_ep,
travel_time,
qos,
hop_count,
data,
):
# Could be done in C extension if needed by providing list to extension
if self.ignore_ep_filter is not None and dst_ep in self.ignore_ep_filter:
self.logger.debug("Message received on ep % filtered out", dst_ep)
return
# Get sink name from sender unique name
name = self.sink_manager.get_sink_name(sender)
self.on_data_received(
sink_id=name,
timestamp=timestamp,
src=src,
dst=dst,
src_ep=src_ep,
dst_ep=dst_ep,
travel_time=travel_time,
qos=qos,
hop_count=hop_count,
data=data,
)
def _on_data_received(self, sender, object, iface, signal, params):
# pylint: disable=unused-argument
# pylint: disable=redefined-builtin
# filter out endpoint
if self.ignore_ep_filter is not None and params[
4] in self.ignore_ep_filter:
self.logger.debug("Message received on ep % filtered out",
params[4])
return
# Get sink name from sender unique name
name = self.sink_manager.get_sink_name(sender)
self.on_data_received(
sink_id=name,
timestamp=params[0],
src=params[1],
dst=params[2],
src_ep=params[3],
dst_ep=params[4],
travel_time=params[5],
qos=params[6],
hop_count=params[7],
data=bytearray(params[8]),
)
def run(self):
self.on_start_client()
# If needed start C extension thread
if self.c_extension_thread is not None:
self.c_extension_thread.start()
# For now, start the GLib loop for even if C extension is
# in use as some signals are still handled on it. But should not be
# the case in future. Even without handling signals, this thread takes
# 30% of one CPU on a rpi3.
try:
self.loop.run()
except KeyboardInterrupt:
self.loop.quit()
self.on_stop_client()
def stop_dbus_client(self):
"""
Explicitly stop the dbus client
"""
self.loop.quit()
# Method should be overwritten by child class
def on_data_received(
self,
sink_id,
timestamp,
src,
dst,
src_ep,
dst_ep,
travel_time,
qos,
hop_count,
data,
):
pass
def on_sink_connected(self, name):
pass
def on_sink_disconnected(self, name):
pass
def on_stack_started(self, name):
pass
def on_start_client(self):
pass
def on_stop_client(self):
pass
bus_name = "org.example.ca.server"
dbus_filter = "/" + "/".join(bus_name.split("."))
# print(dbus_filter) # /org/example/ca/server
def cb_server_signal_emission(*args):
"""
Callback on emitting signal from server
Emitted signal is the value of the counter
Data is in args[4]. The first item in a tuple.args[4][0]
"""
data = args[4][0]
print("Client:", data)
if __name__ == "__main__":
print("Client Starting...")
# Subscribe to bus to monitor for server signal emissions
# dbus_filter. E.g. /org/example/ca/server
bus.subscribe(object=dbus_filter, signal_fired=cb_server_signal_emission)
loop.run()
'''
Example of client_test.py...
$ python3 client_test.py
Client Starting...
Client: The random integer for this second is 12
Client: The random integer for this second is 98
Client: The random integer for this second is 6
'''
if signal != 'ActiveChanged':
logging.debug("Not what we are looking for, ignored")
return
logging.debug("START OF SIGNAL PROCESSING")
if signal_msg is True:
logging.debug("Screensaver now active")
else:
logging.info("Running 'on 0\\nas\\nquit' to turn on TV")
proc = subprocess.Popen(['/usr/bin/cec-client'], stdin=subprocess.PIPE)
results = proc.communicate(input='on 0\nas\nquit\n'.encode())
time.sleep(3)
logging.debug(results[0])
logging.debug(results[1])
proc.terminate()
proc.kill()
logging.debug("END OF SIGNAL PROCESSING")
BUS.subscribe(iface=DBUS_INTERFACE, signal_fired=signal_recieved)
# loop forever, until CTRL+C, or something goes wrong
try:
MainLoop().run()
except KeyboardInterrupt:
logging.debug('Got CTRL+C, exiting cleanly')
raise SystemExit
def main():
# enable led power
en = mraa.Gpio(12)
if os.geteuid() != 0:
time.sleep(1)
en.dir(mraa.DIR_OUT)
en.write(0)
pixel_ring.set_brightness(100)
pixel_ring.think()
sm = StateMachine()
def bus_handler(sender, object, iface, signal, params):
# print(sender)
# print(object)
# print(signal)
# print(params)
if signal == 'trigger':
try:
dir = params[0]
except:
dir = 0
sm.on_detected(dir)
elif signal == 'on_listen':
sm.on_listening()
elif signal == 'on_think':
sm.on_thinking()
elif signal == 'on_speak':
sm.on_speaking()
elif signal == 'on_idle':
sm.on_idle()
elif signal == 'connecting':
sm.on_thinking()
elif signal == 'ready':
sm.on_avs_ready()
elif signal == 'respeakerd_ready':
sm.on_respeakerd_ready()
system_bus = SystemBus()
loop = GLib.MainLoop()
sub = system_bus.subscribe(iface='respeakerd.signal',
signal_fired=bus_handler)
def on_exit(sig):
sub.unsubscribe()
loop.quit()
setup_signals(signals=[signal.SIGINT, signal.SIGTERM, signal.SIGHUP],
handler=on_exit)
print("Running...")
try:
loop.run()
except KeyboardInterrupt:
pass
finally:
pixel_ring.off()
print("Quit...")
en.write(1)
if __name__ == '__main__':
logging.debug('starting')
bus = SystemBus()
if_list = [
('org.ofono.Modem', 'PropertyChanged', lambda _a, obj, iface, signal,
params: mqtt(dev(obj, iface), prop(signal, params))),
('org.ofono.VoiceCall', 'PropertyChanged', lambda _a, obj, iface,
signal, params: mqtt(vcdev(obj, iface), prop(signal, params))),
('org.ofono.CallVolume', 'PropertyChanged', lambda _a, obj, iface,
signal, params: mqtt(dev(obj, iface), prop(signal, params))),
('org.ofono.VoiceCallManager', 'PropertyChanged', lambda _a, obj,
iface, signal, params: mqtt(dev(obj, iface), prop(signal, params))),
('org.ofono.VoiceCallManager', 'CallAdded', lambda _a, obj, iface,
signal, params: mqtt(dev(obj, iface), cadd(signal, params))),
('org.ofono.VoiceCallManager', 'CallRemoved', lambda _a, obj, iface,
signal, params: mqtt(dev(obj, iface), crem(signal, params))),
('org.ofono.NetworkRegistration', 'PropertyChanged', lambda _a, obj,
iface, signal, params: mqtt(dev(obj, iface), prop(signal, params))),
]
[
bus.subscribe(iface=iface, signal=signal, signal_fired=cb)
for iface, signal, cb in if_list
]
mqtt("monitor", payload="started", retain=True)
loop = GLib.MainLoop()
loop.run()
class Central:
"""
Create a device in a central role and communicate with a peripheral device
"""
def __init__(self, address):
self.bus = SystemBus()
self.mngr = self.bus.get(BLUEZ_SERVICE, '/')
self._device_path = self._from_device_address(address)
if self._device_path is None:
raise KeyError(f'Device address [{address}] is not found.'
f'Use bluetoothctl to find what devices are nearby')
self._adapter_path = '/'.join(self._device_path.split('/')[:-1])
self.adapter = self.bus.get(BLUEZ_SERVICE,
self._adapter_path)['org.bluez.Adapter1']
self.device = self.bus.get(BLUEZ_SERVICE, self._device_path)
self.chrcs = {}
self._handlers = {}
self.mainloop = GLib.MainLoop()
def _from_device_address(self, addr):
"""Look up Device D-Bus object path from device address"""
mng_objs = self.mngr.GetManagedObjects()
for path in mng_objs:
dev_addr = mng_objs[path].get(BLUEZ_DEV_IFACE,
{}).get('Address', '')
if addr.casefold() == dev_addr.casefold():
return path
return None
def _get_device_chars(self):
"""Find all GATT characteristics for device. Store for look-up later"""
mng_objs = self.mngr.GetManagedObjects()
for path in mng_objs:
chr_uuid = mng_objs[path].get(BLUEZ_CHR_IFACE, {}).get('UUID')
if path.startswith(self._device_path) and chr_uuid:
self.chrcs[chr_uuid] = self.bus.get(BLUEZ_SERVICE, path)
def _get_uuid(self, path):
"""Get the Characteristics UUID from its D-Bus object path"""
mng_objs = self.mngr.GetManagedObjects()
return mng_objs[path].get(BLUEZ_CHR_IFACE, {}).get('UUID')
def connect(self):
"""
Connect to device.
Wait for GATT services to be resolved before returning
"""
self.device.Connect()
while not self.device.ServicesResolved:
sleep(0.5)
self._get_device_chars()
def disconnect(self):
"""Disconnect from device"""
self.device.Disconnect()
def char_write(self, uuid, value):
"""Write value to given GATT characteristic UUID"""
if uuid.casefold() in self.chrcs:
self.chrcs[uuid.casefold()].WriteValue(value, {})
else:
raise KeyError(f'UUID {uuid} not found')
def char_read(self, uuid):
"""Read value of given GATT characteristic UUID"""
if uuid.casefold() in self.chrcs:
return self.chrcs[uuid.casefold()].ReadValue({})
raise KeyError(f'UUID {uuid} not found')
def _chrc_value_update(self, bus_name, path, signal_iface, signal_name,
notification):
"""
Only send notifications to a users event handler when it is a
GATT characteristics value that has changed
"""
uuid = self._get_uuid(path)
iface, props_changed, props_removed = notification
if iface == BLUEZ_CHR_IFACE and 'Value' in props_changed:
self._handlers[uuid.casefold()].user_handler(
props_changed['Value'])
def on_value_change(self, uuid, handler):
"""
A function reference which will be called when a property
value is changed for given GATT characteristic UUID if notifications
are available
"""
uuid = uuid.casefold()
if uuid in self.chrcs:
if all(('notify' not in self.chrcs[uuid].Flags, 'indicate'
not in self.chrcs[uuid].Flags)):
raise NotImplementedError(
f'Notifications are not implemented on {uuid}')
subs = self.bus.subscribe(iface='org.freedesktop.DBus.Properties',
signal='PropertiesChanged',
object=self.chrcs[uuid]._path,
signal_fired=self._chrc_value_update)
self._handlers[uuid] = PropChangedHandler(handler, subs)
self.chrcs[uuid].StartNotify()
else:
raise KeyError(f'UUID {uuid} not found')
def remove_notify(self, uuid):
"""Stop notifications for given GATT characteristic UUID"""
uuid = uuid.casefold()
if uuid in self.chrcs and uuid in self._handlers:
self.chrcs[uuid.casefold()].StopNotify()
self._handlers[uuid.casefold()].subscription.disconnect()
del self._handlers[uuid]
def wait_for_notifications(self):
"""
Has the effect of block the code from exiting. In the background it
starts an event loop to listen for updates from the device
"""
try:
self.mainloop.run()
except KeyboardInterrupt:
self.cleanup()
def cleanup(self):
"""
If you have the used `wait_for_notifications`, then this command
will remove that blocking. This will stop the event loop, remove
all notification subscriptions, disconnect from the peripheral device.
"""
self.mainloop.quit()
all_uuids = list(self._handlers.keys())
for uuid in all_uuids:
self.remove_notify(uuid)
self.disconnect()
class Bluetooth:
def __init__(self, name):
self.__bus = SystemBus()
self.__adapter = self.__bus.get(BLUEZ_SERVICE,
'hci0')[INTERFACE['ADAPTER']]
self.__set_alias(name)
self.__player = None
self.__change_callback = None
self.__bus.subscribe(sender=BLUEZ_SERVICE,
signal='PropertiesChanged',
arg0=INTERFACE['ADAPTER'],
signal_fired=self.__adapter_handler)
self.__bus.subscribe(sender=BLUEZ_SERVICE,
signal='PropertiesChanged',
arg0=INTERFACE['MEDIA_CONTROL'],
signal_fired=self.__mediacontrol_handler)
self.__bus.subscribe(sender=BLUEZ_SERVICE,
signal='PropertiesChanged',
arg0=INTERFACE['MEDIA_PLAYER'],
signal_fired=self.__mediaplayer_handler)
def start_discovery(self):
self.__powered()
self.__pairable()
self.__discoverable()
return self.__adapter.StartDiscovery()
def set_on_change(self, callback):
self.__change_callback = callback
@property
def device_name(self):
device_object = self.__bus.get(
BLUEZ_SERVICE, self.__player[INTERFACE['MEDIA_PLAYER']].Device)
device = device_object[INTERFACE['DEVICE']]
return device.Alias
@property
def current_track(self):
player = self.__player[INTERFACE['MEDIA_PLAYER']]
return {
'title': player.Track.get('Title', ''),
'album': player.Track.get('Album', ''),
'artist': player.Track.get('Artist', ''),
'genre': player.Track.get('Genre', ''),
'track_number': player.Track.get('TrackNumber', 0),
'number_of_tracks': player.Track.get('NumberOfTracks', 0),
'duration_ms': player.Track.get('Duration', 0),
'position_ms': player.Position,
'status': player.Status.lower()
}
def play(self):
try:
self.__player[INTERFACE['MEDIA_PLAYER']].Play()
except GLib.Error:
log.warning('Can\'t play track, player not ready.')
def pause(self):
try:
self.__player[INTERFACE['MEDIA_PLAYER']].Pause()
except GLib.Error:
log.warning('Can\'t pause track, player not ready.')
def next(self):
try:
self.__player[INTERFACE['MEDIA_PLAYER']].Next()
except GLib.Error:
log.warning('Can\'t go to next track, player not ready.')
def previous(self):
try:
self.__player[INTERFACE['MEDIA_PLAYER']].Previous()
except GLib.Error:
log.warning('Can\'t go to previous track, player not ready.')
def shuffle(self, setting):
shuffle_settings = ['off', 'alltracks', 'group']
if setting not in shuffle_settings:
return
try:
self.__player[INTERFACE['MEDIA_PLAYER']].Shuffle = setting
except GLib.Error:
log.warning('Can\'t set shuffle mode to %s, player not ready.',
setting)
def repeat(self, setting):
repeat_settings = ['off', 'singletrack', 'alltracks', 'group']
if setting not in repeat_settings:
return
try:
self.__player[INTERFACE['MEDIA_PLAYER']].Repeat = setting
except GLib.Error:
log.warning('Can\'t set repeat mode to %s, player not ready.',
setting)
def __get_managed_objects(self):
object_manager = self.__bus.get(
BLUEZ_SERVICE, '/')['org.freedesktop.DBus.ObjectManager']
return object_manager.GetManagedObjects()
def __set_alias(self, alias):
self.__adapter.Alias = alias
def __powered(self):
self.__adapter.Powered = True
def __discoverable(self, timeout=90):
self.__adapter.Discoverable = True
self.__adapter.DiscoverableTimeout = timeout
def __pairable(self, timeout=90):
self.__adapter.Pairable = True
self.__adapter.PairableTimeout = timeout
def __get_devices(self):
objects = self.__get_managed_objects()
devices_filter = lambda item: INTERFACE['DEVICE'] in item[1]
return dict(filter(devices_filter, objects.items()))
def __get_paired_media_devices(self):
devices = self.__get_devices()
paired_media_filter = lambda item: item[1][INTERFACE['DEVICE']][
'Paired'] and INTERFACE['MEDIA_CONTROL'] in item[1]
return dict(filter(paired_media_filter, devices.items()))
def __connect_to_paired_media_device(self):
devices = self.__get_paired_media_devices()
device_path = list(devices.keys())[0]
device_object = self.__bus.get(BLUEZ_SERVICE, device_path)
device = device_object[INTERFACE['DEVICE']]
if device.Connected:
log.info('Connected to device %s.', device.Name)
player_path = device_object[INTERFACE['MEDIA_CONTROL']].Player
self.__init_player(player_path)
else:
try:
device.Connect()
except GLib.GError as err:
log.warning('Can\'t connect to device %s.', device.Alias)
def __init_player(self, player_path):
self.__player = self.__bus.get(BLUEZ_SERVICE, player_path)
def __adapter_handler(self, sender, path, interface, signal, parameters):
interface, properties, optional = parameters
if 'Discovering' in properties:
log.info('Discovering active. Looking for devices.')
try:
self.__connect_to_paired_media_device()
except:
log.info('No paired devices found.')
def __mediacontrol_handler(self, sender, path, interface, signal,
parameters):
interface, properties, optional = parameters
if properties['Connected']:
if 'Player' in properties:
self.__init_player(properties['Player'])
def __mediaplayer_handler(self, sender, path, interface, signal,
parameters):
self.__change_callback()
