大华SDK二次开发 JAVA

最近对接大华接口要控制摄像头的旋转，SDK源码中注释比较少也没有详细的技术文档，自己研究下写了这个帮助类可以实现摄像头8个方向的控制，首先需要引入netsdk的jar包，直接上源码：

public class PTZControlUtil {// 初始化sdkpublic static NetSDKLib netsdk = SDK_INSTANCE;// 设备信息private static _DEVICEINFO_Ex m_stDeviceInfo = new _DEVICEINFO_Ex();// 登陆句柄private static NetSDKLib.LLong m_hLoginHandle = new NetSDKLib.LLong(0);// 网络断线处理private static DisConnect disConnect = new DisConnect();// 设备连接恢复，实现设备连接恢复接口private static HaveReConnect haveReConnect = new HaveReConnect();/*** 云台控制* @param m_strIp ip* @param m_nPort 端口* @param m_strUser登录名* @param m_strPassword 密码* @param nChannelID 通道id 默认为0* @param command 命令* @param lParam1 默认 0，当有左上或左下等操作时才会传值 （1-8）* @param lParam2 垂直/水平 移动速度 （1-8）*/public static void upControlPtz(String m_strIp, int m_nPort, String m_strUser, String m_strPassword, int nChannelID, String command, int lParam1, int lParam2) {// 初始化init(disConnect, haveReConnect);// 若未登录，先登录if (m_hLoginHandle.longValue() == 0) {login(m_strIp, m_nPort, m_strUser, m_strPassword);}// 开始移动，若超过角度则会变为左右移动if (m_hLoginHandle.longValue() != 0) {control(nChannelID, command, lParam1, lParam2);}// 退出logout();// 释放资源cleanup();}/*** 云台控制* @param nChannelID* @param command* @param lParam1* @param lParam2*/private static void control(int nChannelID, String command, int lParam1, int lParam2) {if ("UP".equals(command)) {//向上netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_UP_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_UP_CONTROL,0, 0, 0, 1);} else if ("DOWN".equals(command)) {//向下netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_DOWN_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_DOWN_CONTROL,0, 0, 0, 1);} else if ("LEFT".equals(command)) {//向左netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_LEFT_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_LEFT_CONTROL,0, 0, 0, 1);} else if ("RIGHT".equals(command)) {//向右netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_RIGHT_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_RIGHT_CONTROL,0, 0, 0, 1);} else if ("LEFT_UP".equals(command)) {//向左上netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_LEFTTOP,lParam1, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_LEFTTOP,0, 0, 0, 1);} else if ("LEFT_DOWN".equals(command)) {//向左下netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_LEFTDOWN,lParam1, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_LEFTDOWN,0, 0, 0, 1);} else if ("RIGHT_UP".equals(command)) {//向右上netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_RIGHTTOP,lParam1, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_RIGHTTOP,0, 0, 0, 1);} else if ("RIGHT_DOWN".equals(command)) {//向右下netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_RIGHTDOWN,lParam1, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_EXTPTZ_RIGHTDOWN,0, 0, 0, 1);} else if ("FOCUS_NEAR".equals(command)) {//变焦+netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_FOCUS_ADD_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_FOCUS_ADD_CONTROL,0, 0, 0, 1);} else if ("FOCUS_FAR".equals(command)) {//变焦-netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_FOCUS_DEC_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_FOCUS_DEC_CONTROL,0, 0, 0, 1);} else if ("ZOOM_IN".equals(command)) {//变倍+netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_ZOOM_ADD_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_ZOOM_ADD_CONTROL,0, 0, 0, 1);} else if ("ZOOM_OUT".equals(command)) {//变倍-netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_ZOOM_DEC_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_ZOOM_DEC_CONTROL,0, 0, 0, 1);} else if ("IRIS_ENLARGE".equals(command)) {//光圈+netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_APERTURE_ADD_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_APERTURE_ADD_CONTROL,0, 0, 0, 1);} else if ("IRIS_REDUCE".equals(command)) {//光圈-netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_APERTURE_DEC_CONTROL,0, lParam2, 0, 0);netsdk.CLIENT_DHPTZControlEx(m_hLoginHandle, nChannelID,_PTZ_APERTURE_DEC_CONTROL,0, 0, 0, 1);}}/*** 初始化*/private static boolean bInit = false;private static boolean bLogopen = false;public static boolean init(NetSDKLib.fDisConnect disConnect, NetSDKLib.fHaveReConnect haveReConnect) {bInit = netsdk.CLIENT_Init(disConnect, null);if(!bInit) {System.out.println("Initialize SDK failed");return false;}//打开日志，可选NetSDKLib.LOG_SET_PRINT_INFO setLog = new NetSDKLib.LOG_SET_PRINT_INFO();File path = new File("./sdklog/");if (!path.exists()) {path.mkdir();}String logPath = path.getAbsoluteFile().getParent() + "\\sdklog\\" + ToolKits.getDate() + ".log";setLog.nPrintStrategy = 0;setLog.bSetFilePath = 1;System.arraycopy(logPath.getBytes(), 0, setLog.szLogFilePath, 0, logPath.getBytes().length);System.out.println(logPath);setLog.bSetPrintStrategy = 1;bLogopen = netsdk.CLIENT_LogOpen(setLog);if(!bLogopen ) {System.err.println("Failed to open NetSDK log");}// 设置断线重连回调接口，设置过断线重连成功回调函数后，当设备出现断线情况，SDK内部会自动进行重连操作// 此操作为可选操作，但建议用户进行设置netsdk.CLIENT_SetAutoReconnect(haveReConnect, null);//设置登录超时时间和尝试次数，可选int waitTime = 5000; //登录请求响应超时时间设置为5Sint tryTimes = 1; //登录时尝试建立链接1次netsdk.CLIENT_SetConnectTime(waitTime, tryTimes);// 设置更多网络参数，NET_PARAM的nWaittime，nConnectTryNum成员与CLIENT_SetConnectTime// 接口设置的登录设备超时时间和尝试次数意义相同,可选_PARAM netParam = new _PARAM();netParam.nConnectTime = 10000;// 登录时尝试建立链接的超时时间netParam.nGetConnInfoTime = 3000; // 设置子连接的超时时间netParam.nGetDevInfoTime = 3000;//获取设备信息超时时间，为0默认1000msnetsdk.CLIENT_SetNetworkParam(netParam);return true;}/*** 登录** @param m_strIp ip* @param m_nPort 端口号* @param m_strUser账号* @param m_strPassword 密码* @return 成功则 true*/public static boolean login(String m_strIp, int m_nPort, String m_strUser, String m_strPassword) {//入参_IN_LOGIN_WITH_HIGHLEVEL_SECURITY pstInParam = new _IN_LOGIN_WITH_HIGHLEVEL_SECURITY();pstInParam.nPort = m_nPort;pstInParam.szIP = m_strIp.getBytes();pstInParam.szPassword = m_strPassword.getBytes();pstInParam.szUserName = m_strUser.getBytes();//出参_OUT_LOGIN_WITH_HIGHLEVEL_SECURITY pstOutParam = new _OUT_LOGIN_WITH_HIGHLEVEL_SECURITY();pstOutParam.stuDeviceInfo = m_stDeviceInfo;m_hLoginHandle = netsdk.CLIENT_LoginWithHighLevelSecurity(pstInParam, pstOutParam);System.out.println(netsdk.getClass());if (m_hLoginHandle.longValue() == 0) {System.err.printf("登录失败！\n", m_strIp, m_nPort, ToolKits.getErrorCodePrint());} else {System.out.println("登录成功： [ " + m_strIp + " ]");}return m_hLoginHandle.longValue() == 0 ? false : true;}/*** 退出登录*/private static boolean logout() {if (m_hLoginHandle.longValue() == 0) {return false;}boolean bRet = netsdk.CLIENT_Logout(m_hLoginHandle);if (bRet) {m_hLoginHandle.setValue(0);}return bRet;}/*** 释放资源*/public static void cleanup() {if (bLogopen) {netsdk.CLIENT_LogClose();}if (bInit) {netsdk.CLIENT_Cleanup();}}// 设备断线回调: 通过 CLIENT_Init 设置该回调函数，当设备出现断线时，SDK会调用该函数private static class DisConnect implements NetSDKLib.fDisConnect {public void invoke(NetSDKLib.LLong m_hLoginHandle, String pchDVRIP, int nDVRPort, Pointer dwUser) {System.out.printf("Device[%s] Port[%d] DisConnect!\n", pchDVRIP, nDVRPort);}}// 网络连接恢复，设备重连成功回调// 通过 CLIENT_SetAutoReconnect 设置该回调函数，当已断线的设备重连成功时，SDK会调用该函数private static class HaveReConnect implements NetSDKLib.fHaveReConnect {public void invoke(NetSDKLib.LLong m_hLoginHandle, String pchDVRIP, int nDVRPort, Pointer dwUser) {System.out.printf("ReConnect Device[%s] Port[%d]\n", pchDVRIP, nDVRPort);}}}