混合编程python与C++_python c++混合编程-优快云博客

本文链接：https://blog.youkuaiyun.com/dianxin2023/article/details/131117375

该代码示例展示了C++如何实现服务器管理类，包括建立连接、接收和发送数据帧，以及与模型管理类交互。模型管理类负责处理检测和分类模型，创建JSON数据进行传输。Python客户端则负责图像编码并发送至服务器，接收处理结果。

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C++

C++ 服务端#

.h文件#

注意文中的model

// .h
#pragma once
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <signal.h>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

class ModelManager;

class ServerManager
{
private:
	int m_port;
	char *m_addr;
	cv::VideoCapture m_cap;
	int m_server;
	int m_accept; // client conn
public:
	bool initialization(const int &port, const cv::VideoCapture &cap, char *addr = nullptr);
	bool initialization(const int &port, char *addr = nullptr);
	bool build_connect();
	bool acceptClient();
	void error_print(const char *ptr);
	bool free_connect();

	bool send_data_frame(ModelManager& model);
	bool receive_data_frame(cv::Mat &frame, ModelManager& model);
};

.cpp文件#

#include "ServerManager.h"
#include "ModelManager.h"
#define BUFFER_SIZE 65538

void ServerManager::error_print(const char * ptr) {
        perror(ptr);
        exit(EXIT_FAILURE);
}

bool ServerManager::initialization(const int& port, const cv::VideoCapture& cap, char* addr){
    m_port = htons(port);
	m_addr = addr;
	m_cap = cap;
	return true;
}

bool ServerManager::initialization(const int& port, char* addr){
    m_port = htons(port);
    m_addr = addr;
	return true;
}

bool ServerManager::build_connect() {
	struct sockaddr_in server_addr;
    bzero(&server_addr,sizeof(server_addr));
	server_addr.sin_family = AF_INET;
	server_addr.sin_addr.s_addr = m_addr?inet_addr(m_addr):INADDR_ANY;  
	server_addr.sin_port = m_port;
	// create socket 
	m_server = socket(AF_INET, SOCK_STREAM, 0);
	if(m_server < 0)
        error_print("socket bind error");
	// can reuse port
    int on = 1;
    if(setsockopt(m_server,SOL_SOCKET,SO_REUSEADDR,&on,sizeof(on)) < 0)
        error_print("setsockopt error");
    // bind addr
    if(bind(m_server, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0)
        error_print("bind error");
    // listen only one client
    if(listen(m_server, 1) < 0)
        error_print("listen failed");
    
	cout << "ServerManager is listening, plesae wait..." << endl;
	
	return true;
}

bool ServerManager::acceptClient(){
	struct sockaddr_in accept_addr;
	socklen_t accept_len = sizeof(accept_addr);
	bzero(&accept_addr,sizeof(accept_addr));
	// accept client connection
    if((m_accept = accept(m_server,(struct sockaddr*)&accept_addr,&accept_len)) < 0)
        error_print("accept error");
	std::cout << "Connection established" << std::endl;
	retur