def prepare_LSL_streaming():
print("Starting LSL streaming")
if acc:
infoACC = pylsl.StreamInfo('acc', 'ACC', 3, 32, 'int32',
'ACC-empatica_e4')
global outletACC
outletACC = pylsl.StreamOutlet(infoACC)
if bvp:
infoBVP = pylsl.StreamInfo('bvp', 'BVP', 1, 64, 'float32',
'BVP-empatica_e4')
global outletBVP
outletBVP = pylsl.StreamOutlet(infoBVP)
if gsr:
infoGSR = pylsl.StreamInfo('gsr', 'GSR', 1, 4, 'float32',
'GSR-empatica_e4')
global outletGSR
outletGSR = pylsl.StreamOutlet(infoGSR)
if tmp:
infoTemp = pylsl.StreamInfo('tmp', 'Temp', 1, 4, 'float32',
'Temp-empatica_e4')
global outletTemp
outletTemp = pylsl.StreamOutlet(infoTemp)
if ibi:
infoIBI = pylsl.StreamInfo('ibi', 'IBI', 1, 4, 'float32',
'IBI-empatica_e4')
global outletIBI
outletIBI = pylsl.StreamOutlet(infoIBI)
def __init__(self,
chan_names=['Mock'],
units='microvolts',
types='EEG',
fs=0):
self.fs = fs
self.chan_names = chan_names
self.mrk_chan_idx = []
if 'MRK' in chan_names:
self.mrk_chan_idx.append(chan_names.index('MRK'))
if 'DTRIG' in chan_names:
self.mrk_chan_idx.append(chan_names.index('DTRIG'))
source_id = str(hex(getnode()))
# ---------------------------------------------------------------------
# create eeg info and stream
eeg_info= pylsl.StreamInfo(name='neuroPrax',
type='EEG',
channel_count=len(chan_names),
nominal_srate=fs,
channel_format='float32',
source_id='neuroPrax_EEG_' + source_id)
acq = eeg_info.desc().append_child("acquisition")
acq.append_child_value('manufacturer', 'neuroConn')
acq.append_child_value('model', 'neuroPrax')
acq.append_child_value('precision', '24')
acq.append_child_value('compensated_lag', '0')
channels = eeg_info.desc().append_child("channels")
for c, u, t in zip(chan_names, units, types):
channels.append_child("channel") \
.append_child_value("label", c) \
.append_child_value("unit", u) \
.append_child_value("type", t)
self.eeg_stream = pylsl.StreamOutlet(eeg_info,
chunk_size=0,
max_buffered=1)
print(f'EEG StreamOutlet created with source_id ' +
f'"neuroPrax_EEG_{source_id}"')
# ---------------------------------------------------------------------
mrk_info= pylsl.StreamInfo(name='neuroPrax_Markers',
type='Markers',
channel_count=1,
nominal_srate=0,
channel_format='string',
source_id='neuroPrax_MRK_' + source_id)
self.mrk_stream = pylsl.StreamOutlet(mrk_info)
print(f'Marker StreamOutlet created with source_id ' +
f'"neuroPrax_MRK_{source_id}"')
# ---------------------------------------------------------------------
self.l0 = pylsl.local_clock()
def replay_xdf(path, files, auto=True):
game_info = lsl.StreamInfo("Game State", "Flags", 1, 0, 'string',
"jkllkjl")
game_outlet = lsl.StreamOutlet(game_info)
eeg_info = lsl.StreamInfo("NeuroneStream", "EEG", 75, 5000, 'float32',
"SDQWD")
eeg_outlet = lsl.StreamOutlet(eeg_info)
for file in files:
#load a file
print('Reading ', file)
stream = xdf.load_xdf(path + file, verbose=False)
stream_names = np.array(
[item['info']['name'][0] for item in stream[0]])
game_state = list(stream_names).index('Game State')
eeg_data = list(stream_names).index('NeuroneStream')
game_series = stream[0][game_state]['time_series']
game_time = stream[0][game_state]['time_stamps']
eeg_series = stream[0][eeg_data]['time_series']
eeg_time = stream[0][eeg_data]['time_stamps']
eeg_time = eeg_time - game_time[0]
game_time = game_time - game_time[0]
game_idx = 0
eeg_idx = eeg_time[eeg_time <= 0].size - 1
end = game_time.size - 1
if not auto:
print('Press "Enter" to start streaming next file.')
keyboard.wait('enter')
start = time.time()
min = 0
now = time.time() - start
while game_idx <= end:
now = time.time() - start
game_target = game_time[game_time <= now].size - 1
eeg_target = eeg_time[eeg_time <= now].size - 1
while game_idx <= game_target:
game_outlet.push_sample(game_series[game_idx])
game_idx += 1
while eeg_idx <= eeg_target:
eeg_outlet.push_sample(eeg_series[eeg_idx])
eeg_idx += 1
if now / 60 > min:
print("Streamed for", min, "out of 5 minutes.")
min += 1
print("Streaming complete.")
def _create_fake_eeg_stream(self):
"""
Method for generating dummy EEG data for the muse. Sends randomly-
generated data through an LSL outlet.
:return: None
"""
def generate_muse_data():
"""Generate 4 random floats, representing channels AF7, AF8, TP9,
and TP10 on the muse headset"""
return [random.random() for _ in range(4)]
# create fake muse
info = pylsl.StreamInfo(name='Muse', type='EEG', channel_count=4,
nominal_srate=256, channel_format='float32',
source_id='fake muse')
info.desc().append_child_value('manufacturer', 'Muse')
channels = info.desc().append_child('channels')
# set channel names and units
for c in ['TP9-l_ear', 'FP1-l_forehead', 'FP2-r_forehead',
'TP10-r_ear']:
channels.append_child("channel") \
.append_child_value("label", c) \
.append_child_value("unit", "microvolts") \
.append_child_value("type", "EEG")
outlet = pylsl.StreamOutlet(info)
# continuously push data to outlet when active
while self._fake_muse_active:
outlet.push_sample(generate_muse_data())
time.sleep(0.00390625) # 256Hz
def send_markers(stop_event, markers=[], stream_name='BCI_select'):
"""
function to be run in a thread to send markers via lsl
:param stop_event: threading.event that can be set to stop the server
:param markers: buffer of markers. will send marker if new one is appended to markers
:param stream_name: name of stream to be generated
:return:
"""
print('The lsl BCI selection thread started.')
# 1. create a new stream
info = pylsl.StreamInfo(name=stream_name,
type='marker',
channel_count=1,
channel_format='int32')
# 2. make an outlet
outlet = pylsl.StreamOutlet(info)
print('Created marker stream :', outlet)
stim_sent = 0
while not stop_event.is_set():
try:
if len(markers) > stim_sent:
stimulus = markers[-1]
print('will send stimulus ', stimulus)
outlet.push_sample([np.int32(stimulus)])
stim_sent += 1
time.sleep(5)
except KeyboardInterrupt:
break
print('lsl send shutdown complete')
def send_data(stop_event, markers=[], stream_name='BCI_data'):
"""
function to generated random data to send via LSL. makes it easier to send markers in parralel
:param stop_event: threading.event that can be set to stop the server
:param markers: buffer of markers. will send marker if new one is appended to markers
:param stream_name: name of stream to be generated
:return:
"""
print('The lsl BCI selection thread started.')
# 1. create a new stream
info = pylsl.StreamInfo(name=stream_name,
type='data',
channel_count=1,
nominal_srate=100,
channel_format='float32')
# 2. make an outlet
outlet = pylsl.StreamOutlet(info)
print('Created data stream :', outlet)
while not stop_event.is_set():
try:
mysample = [np.float32(np.random.rand(1, 1))]
outlet.push_sample(mysample)
time.sleep(0.01)
except KeyboardInterrupt:
break
print('lsl send shutdown complete')
def setup_lsl():
global channels
global gaze_stuff
info = pylsl.StreamInfo('Tobii', 'ET', channels, 90, 'float32', mt.address)
info.desc().append_child_value("manufacturer", "Tobii")
channels = info.desc().append_child("channels")
cnt = 0
for s in gaze_stuff:
if s[1] == 1:
cnt += 1
channels.append_child("channel") \
.append_child_value("label", s[0]) \
.append_child_value("unit", "device") \
.append_child_value("type", 'ET')
else:
for i in range(s[1]):
cnt += 1
channels.append_child("channel") \
.append_child_value("label", "%s_%d" % (s[0], i)) \
.append_child_value("unit", "device") \
.append_child_value("type", 'ET')
outlet = pylsl.StreamOutlet(info)
return outlet
def __init__(self):
super(LslMarkerWriter, self).__init__()
markers_info = pylsl.StreamInfo("BCI Stimulus Markers",
"Markers", 1, 0, 'string',
"bci_stim_markers")
self.markers_outlet = pylsl.StreamOutlet(markers_info)
self._stamp = None
def test_marker_stream():
"""Create and return marker lsl outlet."""
# create
info = pylsl.StreamInfo('Markers', 'Markers', 4, 0, 'string', 'mywid32')
# next make an outlet
outlet = pylsl.StreamOutlet(info)
return outlet
def create_lsl_outlet(name,
frequency,
channel_format,
channel_labels,
channel_types,
type=''):
# Create StreamInfo
channel_count = len(channel_labels)
source_id = str(uuid.uuid4())
info = lsl.StreamInfo(name=name,
type=type,
channel_count=channel_count,
nominal_srate=frequency,
channel_format=channel_format,
source_id=source_id)
# Add channel labels
desc = info.desc()
channels_tag = desc.append_child(name='channels')
for label, channel_type in zip(channel_labels, channel_types):
single_channel_tag = channels_tag.append_child(name='channel')
single_channel_tag.append_child_value(name='label', value=label)
single_channel_tag.append_child_value(name='type', value=channel_type)
# Create outlet
return lsl.StreamOutlet(info)
def __init__(self,
stream_name: str = "BCI_Stimulus_Markers",
stream_id: str = "bci_stim_markers"):
super(LslMarkerWriter, self).__init__()
self.stream_name = stream_name
markers_info = pylsl.StreamInfo(stream_name, "Markers", 1, 0, 'string',
stream_id)
self.markers_outlet = pylsl.StreamOutlet(markers_info)
self._stamp = None
def _create_python_repr_lsl_outlet(self, name):
"""Create 1 channel python representation outlet"""
stream_info = lsl.StreamInfo(name=name,
type='Pupil Capture',
channel_count=1,
channel_format=lsl.cf_string,
source_id='%s @ %s' %
(name, self.g_pool.ipc_sub_url))
self._append_channel_info(stream_info, ("Python Representation", ))
self._append_acquisition_info(stream_info)
return lsl.StreamOutlet(stream_info)
def _create_notify_lsl_outlet(url):
"""Creates notification outlet"""
notification_info = lsl.StreamInfo(name='Notifications',
type='Pupil Capture',
channel_count=2,
channel_format=lsl.cf_string,
source_id='Notifications @ %s' % url)
_append_channel_info(notification_info,
("subject", "Python Representation"))
_append_acquisition_info(notification_info)
return lsl.StreamOutlet(notification_info)
def recover_info(stream: StreamInlet) -> StreamInfo:
"takes a StreamInlet and casts it into a StreamInfo"
info = stream.info()
return pylsl.StreamInfo(
name=info.name(),
type=info.type(),
channel_count=info.channel_count(),
nominal_srate=info.nominal_srate(),
channel_format=info.channel_format(),
source_id=info.source_id(),
)
def __init__(self, *args, **kwargs):
super(MappingWidget, self).__init__(*args, **kwargs)
self.move(WINDOWDIMS_MAPPING[0], WINDOWDIMS_MAPPING[1])
self.resize(WINDOWDIMS_MAPPING[2], WINDOWDIMS_MAPPING[3])
# configure lsl stream
outlet_info = pylsl.StreamInfo(name='sensorimotor_mapping',
type='map',
channel_count=1,
nominal_srate=pylsl.IRREGULAR_RATE,
channel_format=pylsl.cf_string,
source_id='mapping1214')
self.map_stream = pylsl.StreamOutlet(outlet_info)
def on_chk_LSL_clicked(self, state):
print(f"LSL clicked state: {state}")
if self.chk_LSL.isChecked():
outlet_info = pylsl.StreamInfo(name='electrode_depth',
type='depth',
channel_count=1,
nominal_srate=pylsl.IRREGULAR_RATE,
channel_format=pylsl.cf_float32,
source_id='depth1214')
self.depth_stream = pylsl.StreamOutlet(outlet_info)
else:
self.depth_stream = None
def _create_primitive_lsl_outlet(self,name):
"""Create 5 channel primitive data outlet"""
stream_info = lsl.StreamInfo(
name=name,
type='Pupil Capture',
channel_count=5,
channel_format=lsl.cf_double64,
source_id='%s @ %s'%(name,self.g_pool.ipc_sub_url))
self._append_channel_info(stream_info,
("diameter", "confidence", "timestamp", "norm_pos_x","norm_pos_y"))
self._append_acquisition_info(stream_info)
return lsl.StreamOutlet(stream_info)
def connect_lsl_sender_predictions():
global lsl_outlet_predictions
print('lsl start StreamOutlet for predictions...', end='')
stream_info = lsl.StreamInfo(LSL_SENDER_PREDS_NAME, \
LSL_SENDER_PREDS_TYPE, \
LSL_SENDER_PREDS_STREAMCHANNELS, \
lsl.IRREGULAR_RATE, \
'float32', \
LSL_SENDER_PREDS_ID)
lsl_outlet_predictions = lsl.StreamOutlet(stream_info)
print('[done]')
def construct_outlet_video(self):
stream_info = lsl.StreamInfo(
name="pupil_capture_video",
type="videostream",
channel_count=1,
channel_format=lsl.cf_int32,
source_id=self.outlet_video_uuid,
)
stream_info.desc().append_child_value("pupil_lsl_relay_version",
VERSION)
stream_info.desc().append_child_value("video_path", self.rec_dir)
return lsl.StreamOutlet(stream_info)
def construct_streaminfo(self):
self.setup_channels()
stream_info = lsl.StreamInfo(
name="pupil_capture",
type="Gaze",
channel_count=len(self.channels),
channel_format=lsl.cf_double64,
source_id=self.outlet_uuid,
)
xml_channels = stream_info.desc().append_child("channels")
for chan in self.channels:
chan.append_to(xml_channels)
return stream_info
def init_lsl():
"""
Define the stream parameters and create outlet stream.
:return: outlet stream object
"""
info = pylsl.StreamInfo('MarkerStream', 'Markers', 1, 0, 'string',
'myuniquesourceid23443')
outlet_stream = pylsl.StreamOutlet(info)
print('\nOpen Lab Recorder & check for MarkerStream and EEG stream')
input('Start recording and hit any key to continue')
return outlet_stream
def test_eeg_stream():
"""Create and return marker lsl outlet."""
# create
info = pylsl.StreamInfo('Muse', 'EEG', 4, 256, 'float32', 'MuseName')
info.desc().append_child_value("manufacturer", "Muse")
channels = info.desc().append_child("channels")
for c in ['TP9-l_ear', 'FP1-l_forehead', 'FP2-r_forehead', 'TP10-r_ear']:
channels.append_child("channel") \
.append_child_value("label", c) \
.append_child_value("unit", "microvolts") \
.append_child_value("type", "EEG")
outlet = pylsl.StreamOutlet(info)
return outlet
def pi_streaminfo(outlet_uuid, channels):
stream_info = lsl.StreamInfo(
name="pupil_invisible",
type="Gaze",
channel_count=len(channels),
channel_format=lsl.cf_double64,
source_id=outlet_uuid,
)
stream_info.desc().append_child_value("pupil_invisible_lsl_relay_version",
VERSION)
xml_channels = stream_info.desc().append_child("channels")
for chan in channels:
chan.append_to(xml_channels)
return stream_info
def _init_lsl_outlets(self):
"""Call in subclass after acquiring address."""
self._info = {}
self._outlets = {}
for name in self._subscriptions:
info = {arg: self._stream_params[arg][name] for arg in INFO_ARGS}
outlet_name = '{}-{}'.format(self._device_id, name)
self._info[name] = lsl.StreamInfo(outlet_name,
**info,
source_id=self._device_id)
self._add_device_info(name)
chunk_size = self._stream_params["chunk_size"][name]
self._outlets[name] = lsl.StreamOutlet(self._info[name],
chunk_size=chunk_size,
max_buffered=360)
def _create_buffered_lsl_outlet(url, name):
"""Create 5 channel primitive data outlet
the five channels are "diameter_0", "diameter_1", "confidence_0",
"confidence_1", "timestamp"
"""
stream_info = lsl.StreamInfo(name=name,
type='Pupil Capture',
channel_count=5,
channel_format=lsl.cf_double64,
source_id='%s @ %s' % (name, url))
_append_channel_info(stream_info,
("diameter_0", "diameter_1", "confidence_0",
"confidence_1", "timestamp"))
_append_acquisition_info(stream_info)
return lsl.StreamOutlet(stream_info)
def construct_streaminfo(self) -> lsl.StreamInfo:
stream_info = lsl.StreamInfo(
name=self.name,
type=self.lsl_type,
channel_count=len(self.channels),
channel_format=lsl.cf_double64,
source_id=self.uuid,
)
stream_info.desc().append_child_value("pupil_lsl_relay_version",
VERSION)
xml_channels = stream_info.desc().append_child("channels")
for chan in self.channels:
chan.append_to(xml_channels)
logger.debug(
f"Creating {self.name} outlet with stream info:\n{stream_info}")
return stream_info
def set_device_info(self, device_info):
import pylsl
import uuid
super(LslProcessor, self).set_device_info(device_info)
channels = self._device_info.channels
info = pylsl.StreamInfo(self._device_info.name, 'EEG', len(channels),
self._device_info.fs, 'float32',
str(uuid.uuid4()))
meta_channels = info.desc().append_child('channels')
for channel in channels:
meta_channels.append_child('channel') \
.append_child_value('label', str(channel)) \
.append_child_value('unit', 'microvolts') \
.append_child_value('type', 'EEG')
self._outlet = pylsl.StreamOutlet(info)
def main():
info = pylsl.StreamInfo('MarkerStream', 'Markers', 1, 0, 'string',
'myuniquesourceid23443')
outlet_stream = pylsl.StreamOutlet(info)
input('Start recording via Lab Recorder and press enter...')
while True:
# Push start trial
input('Press to push `Start` sample')
outlet_stream.push_sample(['1'])
# Push start trial
input('Press to push `End` sample')
outlet_stream.push_sample(['11'])
async def enable_ecg(link, nameprefix, idprefix, **kwargs):
"""Enable the ECG data stream. This is the raw ECG waveform."""
info = pylsl.StreamInfo(nameprefix+'ECG', 'ECG', 1,
nominal_srate=ECGWaveformMessage.srate,
source_id=idprefix+'-ECG')
desc = info.desc()
chn = desc.append_child('channels').append_child('channel')
chn.append_child_value('label', 'ECG1')
chn.append_child_value('type', 'ECG')
chn.append_child_value('unit', 'millivolts')
add_manufacturer(desc)
outlet = pylsl.StreamOutlet(info)
def on_ecg(msg):
outlet.push_chunk([[v] for v in msg.waveform])
await link.toggle_ecg(on_ecg)
def init_lsl():
"""
Define the stream parameters and create outlet stream.
:return: outlet stream object
"""
info = pylsl.StreamInfo('MarkerStream', 'Markers', 1, 0, 'string',
'myuniquesourceid23443')
outlet_stream = pylsl.StreamOutlet(info)
messagebox.showinfo(
title=params['gui']['title'],
message=
'Start Lab Recorder!\nBe sure to check your settings.\nClick okay to begin experiment.'
)
return outlet_stream