def generate_real_stream(port, n_messages=None, interval=0.01):
from bsread.sender import Sender
generator = Sender(port=port)
for channel in simulated_channels:
generator.add_channel(**channel)
generator.generate_stream(n_messages=n_messages, interval=interval)
def start_sender():
# Start a mock sender stream.
generator = Sender(block=False)
generator.add_channel('CAMERA1:X', lambda x: x, metadata={'type': 'int32'})
generator.add_channel('CAMERA1:Y', lambda x: x, metadata={'type': 'int32'})
generator.add_channel('CAMERA1:VALID',
lambda x: 10,
metadata={'type': 'int32'})
generator.open()
while bs_sending:
generator.send()
time.sleep(0.05)
generator.close()
def start_sender():
# Start a mock sender stream.
generator = Sender(block=False)
generator.add_channel('CAMERA1:X', lambda x: x, metadata={'type': 'int32'})
generator.add_channel('CAMERA1:Y', lambda x: x, metadata={'type': 'int32'})
generator.add_channel('CAMERA1:VALID',
lambda x: 10,
metadata={'type': 'int32'})
generator.add_channel('BEAM_OK',
lambda x: 1 if x % 20 == 0 else 0,
metadata={'type': 'int32'})
generator.open()
while bs_sending:
generator.send()
time.sleep(MOCK_SENDER_INTERVAL)
generator.close()
def createStream():
s = TestData()
generator = Sender()
for par in pars:
generator.add_channel(par, partial(s.getPar, parameter=par))
generator.generate_stream()
def image(pulse_id):
image = []
for i in range(2):
# line = []
# for index in range(0, 30, 1):
# grad = (3.1415*index/float(200))+pulse_id/float(100)
# line.append(math.sin(grad))
# image.append(line)
image.append([1.0, 2.0, 3.0, 4.0])
return image
if __name__ == "__main__":
generator = Sender()
generator.add_channel('ABC', lambda x: x, metadata={'type': 'int32'})
generator.add_channel('ABC_BIG',
lambda x: struct.pack('>i', x),
metadata={
'type': 'int32',
'encoding': 'big'
})
generator.add_channel('ABCD', lambda x: x * 10.0)
generator.add_channel('ABCDF', lambda x: x * 100.0)
generator.add_channel('XYZ', lambda x: x * 200.0)
generator.add_channel('XYZW',
lambda x: 'hello',
metadata={'type': 'string'})
generator.add_channel('WWW',
lambda x: [1.0, 2.0, 3.0, 4.0],
metadata={
def main():
parser = argparse.ArgumentParser()
device_name = os.getenv("DEVICE_NAME", "test_device")
parser.add_argument('--device_name',
type=str,
default=device_name,
help='Simulated device name')
source_file = os.getenv("SOURCE_FILE", "sources.json")
parser.add_argument('--source_file',
type=str,
default=source_file,
help='Simulation sources file')
port = os.getenv("PORT", 9999)
parser.add_argument('--port',
type=int,
default=port,
help='Simulation sources file')
args = parser.parse_args()
device_name = args.device_name
source_file = args.source_file
port = args.port
_logger.info("Starting generator for device %s on port %s." %
(device_name, port))
with open(source_file, 'r') as input_file:
sources = json.load(input_file)
if device_name not in sources:
raise ValueError("device_name=%s not found in sources file." %
device_name)
try:
channels_metadata = sources[device_name]
sender = Sender(port=port)
for channel in channels_metadata:
_logger.info("Adding channel %s with type %s and shape %s.." %
(channel["name"], channel["type"], channel["shape"]))
sender.add_channel(name=channel["name"],
function=get_generator_function(
channel["type"], channel["shape"]),
metadata={
"type": channel["type"],
"shape": channel["shape"]
})
sender.generate_stream()
except KeyboardInterrupt:
_logger.info('Generator %s interupted (SIGINT)', device_name)
except Exception as e:
_logger.exception('Generator %s stopped', device_name)
def process_epics_camera(stop_event, statistics, parameter_queue, camera,
port):
"""
Start the camera stream and listen for image monitors. This function blocks until stop_event is set.
:param stop_event: Event when to stop the process.
:param statistics: Statistics namespace.
:param parameter_queue: Parameters queue to be passed to the pipeline.
:param camera: Camera instance to get the images from.
:param port: Port to use to bind the output stream.
"""
sender = None
try:
# If there is no client for some time, disconnect.
def no_client_timeout():
_logger.info(
"No client connected to the '%s' stream for %d seconds. Closing instance."
% (camera.get_name(), config.MFLOW_NO_CLIENTS_TIMEOUT))
stop_event.set()
def process_parameters():
nonlocal x_size, y_size, x_axis, y_axis
x_size, y_size = camera.get_geometry()
x_axis, y_axis = camera.get_x_y_axis()
sender.add_channel("image",
metadata={
"compression":
config.CAMERA_BSREAD_IMAGE_COMPRESSION,
"shape": [x_size, y_size],
"type": "uint16"
})
x_size = y_size = x_axis = y_axis = None
camera.connect()
sender = Sender(port=port,
mode=PUB,
data_header_compression=config.
CAMERA_BSREAD_DATA_HEADER_COMPRESSION)
# Register the bsread channels - compress only the image.
sender.add_channel("width",
metadata={
"compression":
config.CAMERA_BSREAD_SCALAR_COMPRESSION,
"type": "int64"
})
sender.add_channel("height",
metadata={
"compression":
config.CAMERA_BSREAD_SCALAR_COMPRESSION,
"type": "int64"
})
sender.add_channel("timestamp",
metadata={
"compression":
config.CAMERA_BSREAD_SCALAR_COMPRESSION,
"type": "float64"
})
sender.add_channel("x_axis",
metadata={
"compression":
config.CAMERA_BSREAD_SCALAR_COMPRESSION,
"type": "float32"
})
sender.add_channel("y_axis",
metadata={
"compression":
config.CAMERA_BSREAD_SCALAR_COMPRESSION,
"type": "float32"
})
sender.open(no_client_action=no_client_timeout,
no_client_timeout=config.MFLOW_NO_CLIENTS_TIMEOUT)
process_parameters()
statistics.counter = 0
def collect_and_send(image, timestamp):
nonlocal x_size, y_size, x_axis, y_axis
# Data to be sent over the stream.
data = {
"image": image,
"timestamp": timestamp,
"width": x_size,
"height": y_size,
"x_axis": x_axis,
"y_axis": y_axis
}
try:
sender.send(data=data, timestamp=timestamp, check_data=False)
except Again:
_logger.warning(
"Send timeout. Lost image with timestamp '%s'." %
timestamp)
while not parameter_queue.empty():
new_parameters = parameter_queue.get()
camera.camera_config.set_configuration(new_parameters)
process_parameters()
camera.add_callback(collect_and_send)
# This signals that the camera has successfully started.
stop_event.clear()
except:
_logger.exception("Error while processing camera stream.")
finally:
# Wait for termination / update configuration / etc.
stop_event.wait()
camera.disconnect()
if sender:
sender.close()