260 lines
11 KiB
Python
260 lines
11 KiB
Python
import numpy as np
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import zmq
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import threading
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import json
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import queue
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# from Device.SunnyLinker import SunnyLinker64
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from dataBuffer import ParadigmRingBuffer
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from filterProcess import FilterRingBuffer
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from logs.log import algo_log
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class zmqServer(threading.Thread):
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def __init__(self, host='0.0.0.0', cmd_port=8099, data_port=8100, device_info=None):
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threading.Thread.__init__(self)
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self.host = host
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self.cmd_port = cmd_port # 命令交互端口
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self.data_port = data_port # 数据接收端口
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self.running = False
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# 原有业务状态变量
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# self.get_Impedance = False # 是否返回阻抗值
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# self.open_Impedance = None # 是否开启阻抗检测功能
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self.StartDecode = False # false 停止解码，true=开始解码
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self.StartTrain = False # False未进入训练状态，True处于训练状态
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self.state_mode = None # 'train'为训练状态，’rest'为休息状态,'test'为测试状态
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self.currentLabel = -1 # 接收刺激端消息，了解刺激端当前的训练标签
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self.IsExitApp = False # 当socket收到2的时候，就置为True，代表要退出系统了。
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# self.getReport = False # 获取训练报告内容
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self.daemon = True
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# 范式数据缓存
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self.paradigmBuffer = ParadigmRingBuffer(66, 2500)
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self.filterBuffer = FilterRingBuffer(66, 2500)
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# 命令与数据通信
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self.context = zmq.Context()
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# 指令通道 (8099) - ROUTER：短JSON命令，低频率
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self.cmd_socket = self.context.socket(zmq.ROUTER)
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self.cmd_socket.setsockopt(zmq.RCVHWM, 100) # 指令不需要大缓存，100条足够
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self.cmd_socket.setsockopt(zmq.SNDHWM, 100)
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self.cmd_socket.setsockopt(zmq.TCP_NODELAY, 1) # 禁用Nagle算法，降低指令延迟
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self.cmd_socket.bind(f"tcp://{self.host}:{cmd_port}")
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# 数据通道 (8100) - ROUTER：高频脑电二进制流
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self.data_socket = self.context.socket(zmq.ROUTER)
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self.data_socket.setsockopt(zmq.RCVHWM, 500) # 500包=10秒缓存，足够应对短时卡顿
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self.data_socket.setsockopt(zmq.TCP_NODELAY, 1) # 禁用Nagle算法，减少数据传输延迟
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self.data_socket.bind(f"tcp://{self.host}:{data_port}")
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# Poller 轮训器（保持不变）
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self.poller = zmq.Poller()
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self.poller.register(self.cmd_socket, zmq.POLLIN)
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self.poller.register(self.data_socket, zmq.POLLIN)
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# 业务变量
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self.targetFreqs = []
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self.changeTarget = False # 更换目标频率
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# self.sunnyLinker = SunnyLinker64(None, None, None, None,None) #单例模式类，已在Decoder实例化
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self.labels = [0x01, 0x02,0x03]
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self.decoder_switch = False #更换解码器
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self.decoder_class = None #解码器类别 'ssvep','ssmvep','mi'
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# 客户端管理 - 区分命令/数据客户端
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self.cmd_clients = set() # 命令端口客户端ID
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self.data_clients = set() # 数据端口客户端ID
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self.send_queue = queue.Queue() # 发送队列（仅用于命令端口广播）
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def broadcast_message(self, method, params):
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"""Put message into queue to be sent to all command clients"""
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self.send_queue.put((method, params))
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def _handle_cmd_message(self, frames):
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"""处理命令端口消息（原有命令交互逻辑）"""
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if len(frames) < 3:
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return
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ident, _, message_bytes = frames[:3]
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# 注册新的命令客户端
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if ident not in self.cmd_clients:
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self.cmd_clients.add(ident)
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print(f"New CMD Client Connected: {ident} (port: {self.cmd_port})")
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# 解析消息
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try:
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message = json.loads(message_bytes.decode('utf-8'))
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except json.JSONDecodeError:
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print(f"Invalid JSON from CMD client {ident}")
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continue
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print(f"Received CMD request: {message}")
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method = message.get("method")
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params = message.get("params")
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# 原有命令处理逻辑
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if method == "sync":
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self.state_mode = 'sync'
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if method == "targetFreqs":
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if not isinstance(params, list):
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print('targetFreqs must be a list')
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continue
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if params != self.targetFreqs:
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self.targetFreqs = params
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self.changeTarget = True
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if method == "decoderClass":
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if not isinstance(params, str):
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print('decoderClass must be a str')
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continue
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if params != self.decoder_class:
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self.decoder_class = params
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self.decoder_switch = True
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if method == "getReport":
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self.getReport = True
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if method == "train":#训练状态
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self.state_mode = 'train'
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self.StartTrain = True
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self.currentLabel = params # 当前刺激端的训练标签
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self.sunnyLinker.push_trigger(self.labels[self.currentLabel])
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elif method == "predict":#预测状态
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self.state_mode = 'predict'
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if params == 1: #开始解码
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self.StartDecode = True
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self.sunnyLinker.push_trigger(0x63)
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elif params == 2: #停止解码
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self.IsExitApp = True
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self.running = False
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elif method == "rest": #休息状态
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self.state_mode = 'rest'
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# elif method == "impedance":
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# if params == 1:
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# self.open_Impedance = True # 开启阻抗
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# self.get_Impedance = True # 返回阻抗
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# elif params == 2:
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# self.open_Impedance = False # 关闭阻抗
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# self.get_Impedance = False # 停止返回阻抗
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def _handle_data_message(self, frames):
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"""
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处理8100端口原始脑电二进制数据
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固定格式：上位机发送 (5,66) float32 二维数组字节流（已转换为微伏物理量）→ 转置为 (66,5) 写入双缓冲区
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"""
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# 1. 校验ZMQ消息帧完整性
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if len(frames) < 3:
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print(f"[ERROR] 无效数据帧：长度不足3帧，实际长度={len(frames)}")
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return
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ident, _, data_bytes = frames[:3]
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# 2. 客户端管理（单客户端场景，自动更新最新身份）
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if ident not in self.data_clients:
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self.data_clients.add(ident)
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self.current_data_client = ident # 保存唯一客户端身份，用于后续回复滤波结果
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print(f"[INFO] 新数据客户端连接成功：{ident}")
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try:
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# 3. 精确长度校验（核心：固定(5,66) float32 = 5*66*4=1320字节，与int32字节数相同）
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EXPECTED_BYTES = 5 * 66 * 4 # 每个float32占4字节
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if len(data_bytes) != EXPECTED_BYTES:
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print(f"[ERROR] 数据长度错误：期望{EXPECTED_BYTES}字节，实际{len(data_bytes)}字节")
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return
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# 4. 零拷贝二进制解析 + 维度转换
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# 步骤：字节流 → (330,) float32数组 → (5,66) 原始格式 → 转置为 (66,5) 缓冲区标准格式
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data_np = np.frombuffer(data_bytes, dtype=np.float32)
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# 重塑为上位机原始维度
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data_np = data_np.reshape(5, 66)
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# 转置为(通道数, 采样点数)标准格式，转换为float64保证滤波运算精度
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data_np = data_np.T.astype(np.float64)
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# 5. 同时写入双环形缓冲区（方法名与现有类保持一致：appendBuffer）
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# 注意：上位机已发送微伏物理量，无需再乘以增益系数
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self.paradigmBuffer.appendBuffer(data_np)
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self.filterBuffer.appendBuffer(data_np)
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# 生产环境必须注释！每秒50次打印会导致CPU占用飙升30%以上
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algo_log(f"数据写入成功：shape={data_np.shape}, 范围=[{data_np.min():.2f}, {data_np.max():.2f}] μV", level="DEBUG", record_once=True)
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except Exception as e:
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algo_log(f"数据处理失败：{str(e)}", level="ERROR")
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# 调试阶段临时打开，生产环境务必注释
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import traceback
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traceback.print_exc()
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def _process_send_queue(self):
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"""处理发送队列，向所有命令客户端广播消息"""
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while not self.send_queue.empty():
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method, params = self.send_queue.get()
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if self.cmd_clients:
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try:
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msg = {'method': method, 'params': params}
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msg_bytes = json.dumps(msg).encode('utf-8')
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# 打印日志（隐藏大尺寸数据）
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if method in ['single_trial_plot', 'miReport']:
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print(f"{{'method': '{method}', 'params': <Base64 Image Data>}}")
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else:
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print(f"Sending CMD message: {msg}")
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# 广播到所有命令客户端
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for client_id in list(self.cmd_clients):
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try:
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self.cmd_socket.send_multipart([client_id, b'', msg_bytes])
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except Exception as e:
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print(f"Error sending to CMD client {client_id}: {e}")
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self.cmd_clients.discard(client_id) # 移除失效客户端
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except Exception as e:
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print(f"Error preparing broadcast: {e}")
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def run(self):
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self.running = True
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print(f"ZMQ Server started - CMD Port: {self.cmd_port}, DATA Port: {self.data_port}")
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try:
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while self.running:
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# 1. 处理发送队列（命令端口广播）
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self._process_send_queue()
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# 2. 轮训监听两个Socket的输入事件（10ms超时，避免阻塞）
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socks = dict(self.poller.poll(10))
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# 处理命令端口消息
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if self.cmd_socket in socks and socks[self.cmd_socket] == zmq.POLLIN:
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frames = self.cmd_socket.recv_multipart()
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self._handle_cmd_message(frames)
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# 处理数据端口消息
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if self.data_socket in socks and socks[self.data_socket] == zmq.POLLIN:
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frames = self.data_socket.recv_multipart()
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self._handle_data_message(frames)
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except Exception as e:
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print(f"Server error occurred: {e}")
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finally:
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self.running = False
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# 关闭所有Socket和上下文
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self.cmd_socket.close()
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self.data_socket.close()
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self.context.term()
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print("Server sockets and context closed.")
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def stop(self):
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"""显式关闭服务器"""
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self.running = False
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self.cmd_socket.close()
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self.data_socket.close()
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self.context.term()
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print(f"Server closed explicitly - CMD Port: {self.cmd_port}, DATA Port: {self.data_port}")
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if __name__ == '__main__':
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# 初始化并启动服务器（默认cmd=8099, data=8100）
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server = zmqServer()
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server.start()
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# 保持主线程运行
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try:
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while server.running:
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threading.Event().wait(1)
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except KeyboardInterrupt:
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print("Received KeyboardInterrupt, stopping server...")
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server.stop()
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