139 lines
4.8 KiB
Python
139 lines
4.8 KiB
Python
import org.zeromq.ZMQ as ZMQ
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import org.zeromq.ZMQ.Socket as Socket
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import json
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class Array10Array(ReadonlyAsyncRegisterBase, ReadonlyRegisterArray):
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def getSize(self):
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return 0 if (self.take() is None) else len(self.take())
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def set(self, data):
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self.onReadout(data)
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class Array10Matrix(ReadonlyAsyncRegisterBase, ReadonlyRegisterMatrix):
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def getWidth(self):
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return 0 if (self.take() is None) else len(self.take()[0])
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def getHeight(self):
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return 0 if (self.take() is None) else len(self.take())
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def set(self, data, shape):
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if (data is not None) and (shape is not None):
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self.onReadout(Convert.reshape(data, shape))
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class Array10(DeviceBase, Readable, Cacheable, Readable.ReadableType):
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def __init__(self, name, address, modulo_array=1, modulo_matrix=1, mode=ZMQ.PULL):
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""" Device implementing communication with over Array10.
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Args:
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name(str): device name
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address(str): address of stream
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modulo_array(int, default=1): if defined create child device that holds the data array subsampled by this value.
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modulo_matrix(int, default=1): if defined create child device that holds the 2d image subsampled by this value.
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"""
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super(Array10, self).__init__(name)
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self.address = address
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self.mode = mode
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self.context = None
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self.socket = None
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self.running = False
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self.header=None
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self.data=None
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self.array_dev=None
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self.matrix_dev=None
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self.message_count=0
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if modulo_array is not None:
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self.array_dev = Array10Array(self.name + "_array" )
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self.addChild(self.array_dev)
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self.array_dev.modulo = modulo_array
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else:
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self.array_dev = None
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if modulo_matrix is not None:
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self.matrix_dev = Array10Matrix(self.name + "_matrix" )
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self.addChild(self.matrix_dev)
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self.matrix_dev.modulo = modulo_matrix
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else:
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self.matrix_dev = None
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def doInitialize(self):
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self.stop()
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self.header=None
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self.data=None
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self.message_count=0
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self.start()
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def start(self):
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if self.running==False:
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self.getLogger().info("Starting");
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self.running = True
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self.task = fork(self.rx_thread)
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def stop(self):
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if self.running:
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self.getLogger().info("Stopping");
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self.running = False
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ret = join(self.task)
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def rx_thread(self):
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self.getLogger().info("Enter rx thread");
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try:
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self.context = ZMQ.context(1)
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self.socket = self.context.socket(self.mode)
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self.socket.connect(self.address)
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while self.running:
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header = self.socket.recv(ZMQ.NOBLOCK)
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if (header is not None):
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try:
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self.header=json.loads(''.join(chr(i) for i in header))
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self.data = self.socket.recv()
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if self.data is not None:
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self.setCache({"header":self.header, "data":self.data}, None)
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self.message_count=self.message_count+1
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if self.array_dev is not None:
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if self.message_count % self.array_dev.modulo == 0:
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self.array_dev.set(self.data)
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if self.matrix_dev is not None:
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if self.message_count % self.matrix_dev.modulo == 0:
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shape = self.header.get("shape", None)
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if shape: shape=(shape[1],shape[0]) #TODO: FIXME
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self.matrix_dev.set(self.data, shape)
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continue
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except Exception as e:
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print e
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time.sleep(0.01)
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except Exception as e:
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print e
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finally:
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if self.socket:
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self.socket.close()
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if self.context:
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self.context.term()
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self.getLogger().info("Quit rx thread");
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def doClose(self):
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"""Close the channel.
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"""
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self.stop()
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super(Array10, self).doClose()
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#Readable interface
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def read(self):
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self.waitCacheChange(-1)
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return self.take()
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#Testing
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#add_device(Array10("a10", "tcp://localhost:1234", modulo_array=1, modulo_matrix=10), True)
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#add_device(a10.array_dev, True)
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#add_device(a10.matrix_dev, True)
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#add_device(RegisterMatrixSource("src_a10", a10.matrix_dev), True)
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