def test_ThreadPollInput():
app = pg.mkQApp()
outstream = OutputStream()
outstream.configure(**stream_spec)
instream = InputStream()
instream.connect(outstream)
sender = ThreadSender(output_stream=outstream)
poller = ThreadPollInput(input_stream=instream, return_data=True)
global last_pos
last_pos = 0
def on_new_data(pos, arr):
assert arr.shape == (chunksize, nb_channel)
global last_pos
last_pos += chunksize
assert last_pos == pos
def terminate():
sender.wait()
poller.stop()
poller.wait()
app.quit()
sender.finished.connect(terminate)
poller.new_data.connect(on_new_data)
poller.start()
sender.start()
app.exec_()
class StreamMonitor(Node):
"""
Monitors activity on an input stream and prints details about packets
received.
"""
_input_specs = {'signals': {}}
def __init__(self, **kargs):
Node.__init__(self, **kargs)
def _configure(self):
pass
def _initialize(self):
# There are many ways to poll for data from the input stream. In this
# case, we will use a background thread to monitor the stream and emit
# a Qt signal whenever data is available.
self.poller = ThreadPollInput(self.input, return_data=True)
self.poller.new_data.connect(self.data_received)
def _start(self):
self.poller.start()
def data_received(self, ptr, data):
print("Data received: %d %s %s" % (ptr, data.shape, data.dtype))
def test_ThreadPollInput():
app = pg.mkQApp()
outstream = OutputStream()
outstream.configure(**stream_spec)
instream = InputStream()
instream.connect(outstream)
sender = ThreadSender(output_stream=outstream)
poller = ThreadPollInput(input_stream=instream, return_data=True)
global last_pos
last_pos= 0
def on_new_data(pos, arr):
assert arr.shape==(chunksize, nb_channel)
global last_pos
last_pos += chunksize
assert last_pos==pos
def terminate():
sender.wait()
poller.stop()
poller.wait()
app.quit()
sender.finished.connect(terminate)
poller.new_data.connect(on_new_data)
poller.start()
sender.start()
app.exec_()
def test_stream_splitter():
app = pg.mkQApp()
stream_spec = dict(protocol='tcp',
interface='127.0.0.1',
port='*',
transfermode='plaindata',
streamtype='analogsignal',
dtype='float32',
shape=(-1, nb_channel),
timeaxis=0,
compression='',
scale=None,
offset=None,
units='')
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
def on_new_data(pos, arr):
assert arr.shape == (chunksize, 1)
# print(pos, arr.shape)
all_instream = []
all_poller = []
splitter = StreamSplitter()
splitter.configure()
splitter.input.connect(outstream)
for name, output in splitter.outputs.items():
output.configure()
instream = InputStream()
instream.connect(output)
poller = ThreadPollInput(input_stream=instream)
poller.new_data.connect(on_new_data)
all_instream.append(instream)
all_poller.append(poller)
splitter.initialize()
def terminate():
sender.wait()
splitter.stop()
for poller in all_poller:
poller.stop()
poller.wait()
app.quit()
sender.terminated.connect(terminate)
for poller in all_poller:
poller.start()
splitter.start()
sender.start()
app.exec_()
def test_streamconverter():
app = pg.mkQApp()
stream_spec = dict(protocol='tcp', interface='127.0.0.1', port='*',
transfermode='plaindata', streamtype='analogsignal',
dtype='float32', shape=(-1, nb_channel), timeaxis = 0,
compression ='', scale = None, offset = None, units = '')
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
stream_spec2 = dict(protocol='tcp', interface='127.0.0.1', port='*',
transfermode='sharedarray', streamtype='analogsignal',
dtype='float32', shape=(nb_channel, -1), timeaxis = 1,
compression ='', scale = None, offset = None, units = '',
sharedarray_shape = (nb_channel, chunksize*20), ring_buffer_method = 'double',
)
conv = StreamConverter()
conv.configure()
conv.input.connect(outstream)
conv.output.configure(**stream_spec2)
conv.initialize()
instream = InputStream()
instream.connect(conv.output)
global last_pos
last_pos= 0
def on_new_data(pos, arr):
assert arr is None
global last_pos
last_pos += chunksize
assert last_pos==pos
def terminate():
sender.wait()
conv.stop()
poller.stop()
poller.wait()
app.quit()
poller = ThreadPollInput(input_stream=instream)
sender.terminated.connect(terminate)
poller.new_data.connect(on_new_data)
poller.start()
conv.start()
sender.start()
app.exec_()
def test_streamconverter():
app = pg.mkQApp()
stream_spec = dict(protocol='tcp', interface='127.0.0.1', port='*',
transfermode='plaindata', streamtype='analogsignal',
dtype='float32', shape=(-1, nb_channel))
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
stream_spec2 = dict(protocol='tcp', interface='127.0.0.1', port='*',
transfermode='sharedmem', streamtype='analogsignal',
dtype='float32', shape=(-1, nb_channel), buffer_size=1000,
double=True,
)
conv = StreamConverter()
conv.configure()
conv.input.connect(outstream)
conv.output.configure(**stream_spec2)
conv.initialize()
instream = InputStream()
instream.connect(conv.output)
global last_pos
last_pos= 0
def on_new_data(pos, arr):
assert arr is None
global last_pos
last_pos += chunksize
assert last_pos==pos
def terminate():
sender.wait()
#~ conv.stop()
poller.stop()
poller.wait()
app.quit()
poller = ThreadPollInput(input_stream=instream, return_data=None)
sender.finished.connect(terminate)
poller.new_data.connect(on_new_data)
poller.start()
conv.start()
sender.start()
app.exec_()
def test_stream_splitter():
app = pg.mkQApp()
stream_spec = dict(protocol='tcp', interface='127.0.0.1', port='*',
transfermode='plaindata', streamtype='analogsignal',
dtype='float32', shape=(-1, nb_channel), timeaxis = 0,
compression ='', scale = None, offset = None, units = '')
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
def on_new_data(pos, arr):
assert arr.shape==(chunksize, 1)
# print(pos, arr.shape)
all_instream = []
all_poller = []
splitter = StreamSplitter()
splitter.configure()
splitter.input.connect(outstream)
for name, output in splitter.outputs.items():
output.configure()
instream = InputStream()
instream.connect(output)
poller = ThreadPollInput(input_stream=instream)
poller.new_data.connect(on_new_data)
all_instream.append(instream)
all_poller.append(poller)
splitter.initialize()
def terminate():
sender.wait()
splitter.stop()
for poller in all_poller:
poller.stop()
poller.wait()
app.quit()
sender.terminated.connect(terminate)
for poller in all_poller:
poller.start()
splitter.start()
sender.start()
app.exec_()
def test_stream_splitter():
app = pg.mkQApp()
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
def on_new_data(pos, arr):
assert arr.shape[0] == chunksize
assert not arr.flags['C_CONTIGUOUS']
all_instream = []
all_poller = []
splitter = ChannelSplitter()
splitter.configure(output_channels={
'out0': [0, 1, 2],
'out1': [1, 4, 9, 12]
})
splitter.input.connect(outstream)
for name, output in splitter.outputs.items():
output.configure()
instream = InputStream()
instream.connect(output)
poller = ThreadPollInput(input_stream=instream, return_data=True)
poller.new_data.connect(on_new_data)
all_instream.append(instream)
all_poller.append(poller)
splitter.initialize()
def terminate():
sender.wait()
splitter.stop()
for poller in all_poller:
poller.stop()
poller.wait()
app.quit()
sender.finished.connect(terminate)
for poller in all_poller:
poller.start()
splitter.start()
sender.start()
app.exec_()
def test_stream_splitter():
app = pg.mkQApp()
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
def on_new_data(pos, arr):
assert arr.shape[0]==chunksize
assert not arr.flags['C_CONTIGUOUS']
all_instream = []
all_poller = []
splitter = ChannelSplitter()
splitter.configure(output_channels = { 'out0' : [0,1,2], 'out1' : [1,4,9, 12] })
splitter.input.connect(outstream)
for name, output in splitter.outputs.items():
output.configure()
instream = InputStream()
instream.connect(output)
poller = ThreadPollInput(input_stream=instream, return_data=True)
poller.new_data.connect(on_new_data)
all_instream.append(instream)
all_poller.append(poller)
splitter.initialize()
def terminate():
sender.wait()
splitter.stop()
for poller in all_poller:
poller.stop()
poller.wait()
app.quit()
sender.finished.connect(terminate)
for poller in all_poller:
poller.start()
splitter.start()
sender.start()
app.exec_()
def test_ChunkResizer():
app = pg.mkQApp()
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
chunkresizer = ChunkResizer()
chunkresizer.configure(chunksize=33)
chunkresizer.input.connect(outstream)
chunkresizer.output.configure()
chunkresizer.initialize()
def on_new_data(pos, arr):
#~ print('recv', arr.shape, pos)
assert arr.shape[0] == 33
instream = InputStream()
instream.connect(chunkresizer.output)
poller = ThreadPollInput(input_stream=instream, return_data=True)
poller.new_data.connect(on_new_data)
def terminate():
sender.wait()
chunkresizer.stop()
poller.stop()
poller.wait()
app.quit()
sender.finished.connect(terminate)
poller.start()
chunkresizer.start()
sender.start()
app.exec_()
def test_streamconverter():
app = pg.mkQApp()
stream_spec = dict(protocol='tcp',
interface='127.0.0.1',
port='*',
transfermode='plaindata',
streamtype='analogsignal',
dtype='float32',
shape=(-1, nb_channel),
timeaxis=0,
compression='',
scale=None,
offset=None,
units='')
outstream = OutputStream()
outstream.configure(**stream_spec)
sender = ThreadSender(output_stream=outstream)
stream_spec2 = dict(
protocol='tcp',
interface='127.0.0.1',
port='*',
transfermode='sharedarray',
streamtype='analogsignal',
dtype='float32',
shape=(nb_channel, -1),
timeaxis=1,
compression='',
scale=None,
offset=None,
units='',
sharedarray_shape=(nb_channel, chunksize * 20),
ring_buffer_method='double',
)
conv = StreamConverter()
conv.configure()
conv.input.connect(outstream)
conv.output.configure(**stream_spec2)
conv.initialize()
instream = InputStream()
instream.connect(conv.output)
global last_pos
last_pos = 0
def on_new_data(pos, arr):
assert arr is None
global last_pos
last_pos += chunksize
assert last_pos == pos
def terminate():
sender.wait()
conv.stop()
poller.stop()
poller.wait()
app.quit()
poller = ThreadPollInput(input_stream=instream)
sender.terminated.connect(terminate)
poller.new_data.connect(on_new_data)
poller.start()
conv.start()
sender.start()
app.exec_()
def _initialize(self):
# There are many ways to poll for data from the input stream. In this
# case, we will use a background thread to monitor the stream and emit
# a Qt signal whenever data is available.
self.poller = ThreadPollInput(self.input, return_data=True)
self.poller.new_data.connect(self.data_received)