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海康SDK球机精确控制[球机预置点配置]

news 2025/8/2 12:04:52

上篇文章讲述了粗略控制云台的方法
海康摄像头SDK二次开发 JavaDemo云台控制功能实现
虽然可以控制云台八个方向移动,而且能够控制速度,但是想要精确的旋转到一个点位,通过直接控制云台旋转的方式不太可行,因此需要借助另外两种方式:

一种是设置预置点的方式,将当前点位设置成预置点,这样可以控制球机直接旋转到预置点上。
在这里插入图片描述
另一种是设置球机PTZ参数，输入需要的PTZ参数让球机旋转到自己想要的点位上,这种方式相对比较复杂，之后会详细描述

1. 配置球机预置点函数

/*** 配置球机预置点(不用启动图象预览)*/public static Boolean setPTZPresetOther (Integer lUserID, Integer lChannel,int dwPTZPresetCmd, int dwPresetIndex) {boolean status = false;// 配置球机预置点if (lUserID != -1) {status = hCNetSDK.NET_DVR_PTZPreset_Other(lUserID, lChannel, dwPTZPresetCmd, dwPresetIndex);}return status;}

dwPTZPresetCmd：表示需要输入的指令，从操作文档上看，分别是跳转，设置，清除三种
dwPresetIndex：表示预置点序号，从1开始最多支持300个预置点

2.调用函数实现预置点配置

public static void main(String[] args) throws InterruptedException{if (hCNetSDK == null&&playControl==null) {if (!createSDKInstance()) {System.out.println("Load SDK fail");return;}if (!createPlayInstance()) {System.out.println("Load PlayCtrl fail");return;}}//SDK初始化，一个程序只需要调用一次if (hCNetSDK != null) {boolean initSuc = hCNetSDK.NET_DVR_Init();}//异常消息回调if(fExceptionCallBack == null){fExceptionCallBack = new FExceptionCallBack_Imp();}Pointer pUser = null;if (!hCNetSDK.NET_DVR_SetExceptionCallBack_V30(0, 0, fExceptionCallBack, pUser)) {return ;}System.out.println("设置异常消息回调成功");hCNetSDK.NET_DVR_SetLogToFile(3, "./sdkLog", false);lUserID=loginDevice("192.168.110.77",(short) 8000,"admin","HK666888");for (boolean exit = false; !exit; ) {System.out.println("请输入您想要执行的demo实例! （退出请输入yes）");Scanner input = new Scanner(System.in);String str = input.next();// 转换为标准输入str = str.toLowerCase();if (str.equals("yes")) {// 退出程序exit = true;break;}switch (str) {case "1": {System.out.println("\n[Module]设置球机预置点");boolean a = setPTZPresetOther(lUserID,1,HCNetSDK.SET_PRESET,1);if (!a){System.out.println("配置失败:"+hCNetSDK.NET_DVR_GetLastError());}break;}case "2": {System.out.println("\n[Module]清除球机预置点");boolean a = setPTZPresetOther(lUserID,1,HCNetSDK.CLE_PRESET,1);if (!a){System.out.println("清除失败:"+hCNetSDK.NET_DVR_GetLastError());}break;}case "3": {System.out.println("\n[Module]跳转球机预置点");boolean a = setPTZPresetOther(lUserID,1,HCNetSDK.GOTO_PRESET,1);if (!a){System.out.println("跳转失败:"+hCNetSDK.NET_DVR_GetLastError());}break;}}}//退出程序时调用，每一台设备分别注销if (hCNetSDK.NET_DVR_Logout(lUserID)) {System.out.println("注销成功");}//SDK反初始化，释放资源，只需要退出时调用一次hCNetSDK.NET_DVR_Cleanup();}

3. 其他登陆相关的函数

3.1 动态库路径加载

    /*** 动态库路径加载*/private static boolean createSDKInstance() {if (hCNetSDK == null) {synchronized (HCNetSDK.class) {String strDllPath = "";try {if (osSelect.isWindows())//win系统加载库路径strDllPath = System.getProperty("user.dir") + "\\lib\\HCNetSDK.dll";else if (osSelect.isLinux())//Linux系统加载库路径strDllPath = System.getProperty("user.dir") + "/lib/libhcnetsdk.so";hCNetSDK = (HCNetSDK) Native.loadLibrary(strDllPath, HCNetSDK.class);} catch (Exception ex) {System.out.println("loadLibrary: " + strDllPath + " Error: " + ex.getMessage());return false;}}}return true;}

3.2 播放库加载

    /*** 播放库加载*/private static boolean createPlayInstance() {if (hCNetSDK == null) {synchronized (HCNetSDK.class) {String strDllPath = "";try {if (osSelect.isWindows())//win系统加载库路径strDllPath = System.getProperty("user.dir") + "\\lib\\PlayCtrl.dll";else if (osSelect.isLinux())//Linux系统加载库路径strDllPath = System.getProperty("user.dir") + "/lib/libPlayCtrl.so";hCNetSDK = (HCNetSDK) Native.loadLibrary(strDllPath, HCNetSDK.class);} catch (Exception ex) {System.out.println("loadLibrary: " + strDllPath + " Error: " + ex.getMessage());return false;}}}return true;}

3.3 用户登录

    /*** 用户登陆*/public static int loginDevice(String ip, short port, String user, String psw){// 创建设备登录信息和设备信息  对象HCNetSDK.NET_DVR_USER_LOGIN_INFO loginInfo = new HCNetSDK.NET_DVR_USER_LOGIN_INFO();HCNetSDK.NET_DVR_DEVICEINFO_V40 deviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V40();// 设置设备IP地址byte[] deviceAddress = new byte[HCNetSDK.NET_DVR_DEV_ADDRESS_MAX_LEN];byte[] ipBytes = ip.getBytes();System.arraycopy(ipBytes, 0, deviceAddress, 0, Math.min(ipBytes.length, deviceAddress.length));loginInfo.sDeviceAddress = deviceAddress;// 设置用户名和密码byte[] userName = new byte[HCNetSDK.NET_DVR_LOGIN_USERNAME_MAX_LEN];byte[] password = psw.getBytes();System.arraycopy(user.getBytes(), 0, userName, 0, Math.min(user.length(), userName.length));System.arraycopy(password, 0, loginInfo.sPassword, 0, Math.min(password.length, loginInfo.sPassword.length));loginInfo.sUserName = userName;// 设置端口和登录模式loginInfo.wPort = port;loginInfo.bUseAsynLogin = false; // 同步登录loginInfo.byLoginMode = 0; // 使用SDK私有协议// 执行登录操作int userID = hCNetSDK.NET_DVR_Login_V40(loginInfo, deviceInfo);if (userID == -1) {System.err.println("登录失败，错误码为: " + hCNetSDK.NET_DVR_GetLastError());} else {System.out.println(ip + " 设备登录成功！");// 处理通道号逻辑int startDChan = deviceInfo.struDeviceV30.byStartDChan;System.out.println("预览起始通道号: " + startDChan);}return userID; // 返回登录结果}