c++调用海康摄像头云台完整代码

以下是 C++ 调用海康摄像头云台的完整代码：

#include <iostream>
#include <Windows.h>
#include "HCNetSDK.h"

#pragma comment(lib, "HCNetSDK.lib")

using namespace std;

// 登录设备
bool Login(HANDLE& hDev, char* IP, char* username, char* password)
{
    NET_DVR_USER_LOGIN_INFO loginInfo;
    memset(&loginInfo, 0, sizeof(loginInfo));
    loginInfo.bUseAsynLogin = false; // 同步登录
    strcpy(loginInfo.sDeviceAddress, IP);
    strcpy(loginInfo.sUserName, username);
    strcpy(loginInfo.sPassword, password);

    NET_DVR_DEVICEINFO_V40 devInfo;
    memset(&devInfo, 0, sizeof(devInfo));

    hDev = NET_DVR_Login_V40(&loginInfo, &devInfo);
    if (hDev < 0)
    {
        cout << "Login failed: " << NET_DVR_GetLastError() << endl;
        return false;
    }

    return true;
}

// 云台控制
void PTZControl(HANDLE hDev, int cmd, int speed, int stopTime)
{
    NET_DVR_PTZPOS pos;
    memset(&pos, 0, sizeof(pos));

    if (!NET_DVR_GetDVRConfig(hDev, NET_DVR_GET_PTZPOS, 1, &pos, sizeof(pos), NULL, 0))
    {
        cout << "Failed to get PTZ position: " << NET_DVR_GetLastError() << endl;
        return;
    }

    NET_DVR_PTZ_CONTROL_CFG ptzCtrlCfg;
    memset(&ptzCtrlCfg, 0, sizeof(ptzCtrlCfg));
    ptzCtrlCfg.dwSize = sizeof(ptzCtrlCfg);
    ptzCtrlCfg.byChannel = 1;
    ptzCtrlCfg.byPTZCommand = cmd;
    ptzCtrlCfg.dwStop = 0;

    switch (cmd)
    {
        case PTZ_UP:
            pos.wPanPos += speed;
            break;
        case PTZ_DOWN:
            pos.wPanPos -= speed;
            break;
        case PTZ_LEFT:
            pos.wTiltPos -= speed;
            break;
        case PTZ_RIGHT:
            pos.wTiltPos += speed;
            break;
    }

    if (!NET_DVR_SetDVRConfig(hDev, NET_DVR_SET_PTZPOS, 1, &pos, sizeof(pos)))
    {
        cout << "Failed to set PTZ position: " << NET_DVR_GetLastError() << endl;
        return;
    }

    if (!NET_DVR_PTZControlWithSpeed(hDev, ptzCtrlCfg.byChannel, ptzCtrlCfg.byPTZCommand, ptzCtrlCfg.dwStop, speed, speed, speed))
    {
        cout << "PTZ control failed: " << NET_DVR_GetLastError() << endl;
        return;
    }

    Sleep(stopTime);

    ptzCtrlCfg.dwStop = 1;
    if (!NET_DVR_PTZControlWithSpeed(hDev, ptzCtrlCfg.byChannel, ptzCtrlCfg.byPTZCommand, ptzCtrlCfg.dwStop, speed, speed, speed))
    {
        cout << "PTZ control failed: " << NET_DVR_GetLastError() << endl;
        return;
    }
}

// 注销登录
void Logout(HANDLE hDev)
{
    if (hDev >= 0 && !NET_DVR_Logout(hDev))
    {
        cout << "Logout failed: " << NET_DVR_GetLastError() << endl;
    }
}

int main()
{
    HANDLE hDev = -1;

    // 登录设备
    if (!Login(hDev, "192.168.1.100", "admin", "password"))
    {
        return -1;
    }

    // 开始云台控制
    PTZControl(hDev, PTZ_UP, 3, 2000); // 向上运动 3 个单位，持续 2 秒
    PTZControl(hDev, PTZ_DOWN, 3, 2000); // 向下运动 3 个单位，持续 2 秒
    PTZControl(hDev, PTZ_LEFT, 3, 2000); // 向左运动 3 个单位，持续 2 秒
    PTZControl(hDev, PTZ_RIGHT, 3, 2000); // 向右运动 3 个单位，持续 2 秒

    // 注销登录
    Logout(hDev);

    return 0;
}

需要注意的是，该代码使用海康 SDK 实现，需要在编译时链接 HCNetSDK.lib 静态库。同时，需要将海康摄像头的 IP、用户名和密码替换成实际的值，以及根据需要修改云台控制的参数。