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network_camera_receiver/include/network_camera_receiver.h
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47
network_camera_receiver/include/network_camera_receiver.h
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/*
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* @Author: Liu zhenyu
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* @Description: 网络摄像头接收器(重构版)
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* 仅负责从视频流抓取最新帧,不做任何检测/显示。
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* 主程序通过 getLatestFrame() 拉取最新帧后自行处理。
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*/
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#ifndef NETWORK_CAMERA_RECEIVER_H
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#define NETWORK_CAMERA_RECEIVER_H
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#include <opencv2/opencv.hpp>
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#include <string>
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#include <thread>
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#include <mutex>
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#include <atomic>
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class NetworkCameraReceiver {
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public:
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NetworkCameraReceiver(const std::string& host_ip, int port = 5000);
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~NetworkCameraReceiver();
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// 打开视频流
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bool connect();
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// 启动后台抓帧线程(不阻塞)
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void start();
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// 停止抓帧线程并 join
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void stop();
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// 取最新帧(深拷贝到 out);自上次取帧后若无新帧则返回 false
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bool getLatestFrame(cv::Mat& out);
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// 视频流是否已打开
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bool isOpened() const;
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private:
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// 后台抓帧循环
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void captureLoop();
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std::string stream_url;
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cv::VideoCapture cap;
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std::thread capture_thread;
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std::mutex mtx; // 保护 latest_frame
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cv::Mat latest_frame; // 最新一帧
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std::atomic<bool> has_new_frame{false};
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std::atomic<bool> running{false};
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};
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#endif // NETWORK_CAMERA_RECEIVER_H
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