海康摄像头二次开发详解，包含海康摄像头登录、海康云台控制、视频下载等功能

海康摄像头二次开发详解

• 准备
• 海康摄像头SDK开发下载路径：
• 开发过程中遇到的问题记录：
• 添加maven依赖
• 下面代码中会出现的实体类
• CameraManage实体类：
• ControlDto实体类：
• 加载库文件：
• 初始化：
• 登录
• 控制：
• 查询历史视频保存时间：
• 退出登陆释放资源：
• 完整代码：
• 视频下载、回放、视频直播、抓图等功能

准备

海康摄像头SDK开发下载路径：

https://www.hikvision.com/cn/download_61.html

下载解压之后的目录结构：
1 中为需要加载的库文件；2中有所需的jar包及HCNetSDK.java文件

开发过程中遇到的问题记录：

• 一定要记得开启日志打印与及时获取最后一次的错误状态码
• 一个ip下面会有多个摄像头
• 如果返回的错误状态码为10：有可能是端口不对，改用8000试试
• 如果可以登陆却无法控制，有可能是通道错误，有的摄像机通道从1开始，有的从33开始【可通过NET_DVR_GetDVRConfig/NET_DVR_SetDVRConfig来查询和修改相关配置】
• 查询保存的历史视频的起始时间时：NET_DVR_RECORD_TIME_SPAN_INQUIRY结构体占用内存的大小是68个字节

添加maven依赖

<!--海康录像机二次开发依赖jar包-->
<dependency>
    <groupId>net.java.dev.jna</groupId>
    <artifactId>jna</artifactId>
    <version>3.0.9</version>
</dependency>
<!--海康录像机sdk官方提供jar包-->
<dependency>
    <groupId>com.qy</groupId>
    <artifactId>examples</artifactId><!--需要在maven自行安装这个jar包-->
    <version>1.0.0</version>
</dependency>

下面代码中会出现的实体类

CameraManage实体类：

private String deviceIp;
private Integer devicePort;
private String username;
private String password;

ControlDto实体类：

private Long controlUserId;//用户id
private Long channel;//通道【有的类型通道从1开始，有的则从33开始，具体看摄像头配置】
private Integer command;//命令
private Integer motionSpeed;//运动速度
private Integer runOrStop;//0启动/1停止

加载库文件：

	//修改HCNetSDK.java文件中的加载路径
	//如果是jar包可能找不到jar包中的文件，所以需要单独存放
	HCNetSDK INSTANCE = (HCNetSDK) Native.loadLibrary("此处为linux存放库文件libhcnetsdk.so的路径",HCNetSDK.class);
	hcNetSDK = HCNetSDK.INSTANCE;
	
	//如果某些文件加载不到需要手动加载，加载过程如下
	//设置HCNetSDKCom组件库所在路径
	String strPathCom = "/opt/project/yc/yc-video/HCNetLib";
	HCNetSDK.NET_DVR_LOCAL_SDK_PATH struComPath = new HCNetSDK.NET_DVR_LOCAL_SDK_PATH();
	System.out.println(strPathCom.getBytes());
	System.out.println(struComPath.sPath);
	System.arraycopy(strPathCom.getBytes(), 0, struComPath.sPath, 0, strPathCom.length());
	struComPath.write();
	hcNetSDK.NET_DVR_SetSDKInitCfg(2, struComPath.getPointer());
	
	//设置libcrypto.so所在路径
	HCNetSDK.BYTE_ARRAY ptrByteArrayCrypto = new HCNetSDK.BYTE_ARRAY(256);
	String strPathCrypto = "/opt/project/yc/yc-video/HCNetLib/libcrypto.so";
	System.arraycopy(strPathCrypto.getBytes(), 0, ptrByteArrayCrypto.byValue, 0, strPathCrypto.length());
	ptrByteArrayCrypto.write();
	hcNetSDK.NET_DVR_SetSDKInitCfg(3, ptrByteArrayCrypto.getPointer());
	
	//设置libssl.so所在路径
	HCNetSDK.BYTE_ARRAY ptrByteArraySsl = new HCNetSDK.BYTE_ARRAY(256);
	String strPathSsl = "/opt/project/yc/yc-video/HCNetLib/libssl.so";
	System.arraycopy(strPathSsl.getBytes(), 0, ptrByteArraySsl.byValue, 0, strPathSsl.length());
	ptrByteArraySsl.write();
	hcNetSDK.NET_DVR_SetSDKInitCfg(4, ptrByteArraySsl.getPointer());

初始化：

	//设置连接超时时间及尝试次数
	if (!StringUtils.isEmpty(dwWaitTime) && !StringUtils.isEmpty(dwTryTimes)){
	    boolean b1 = hcNetSDK.NET_DVR_SetConnectTime(Integer.parseInt(dwWaitTime), Integer.parseInt(dwTryTimes));
	}
	
	//开启日志
	hcNetSDK.NET_DVR_SetLogToFile(true,"/logs-video/",true);
	
	//初始化
	boolean initFlag = hcNetSDK.NET_DVR_Init();
	
	if(!initFlag) {
	    return new ResultMoudel(ResultMoudel.ERROR_FLAG,"初始化失败NET_DVR_Init，状态码为"+hcNetSDK.NET_DVR_GetLastError());
	}

登录

	//登陆
	HCNetSDK.NET_DVR_DEVICEINFO_V30 deviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V30();
	NativeLong userId = hcNetSDK.NET_DVR_Login_V30(cameraManage.getDeviceIp(), (short) cameraManage.getDevicePort().shortValue(), cameraManage.getUsername(), cameraManage.getPassword(), deviceInfo);
	
	long lUserId = userId.intValue();
	if(lUserId !=-1 || 4294967295L != lUserId) {
	    Map<String, Long> hashMap = new HashMap<>();
	    hashMap.put("controlUserId",lUserId);
	    hashMap.put("channel",Long.parseLong(cameraManage.getDeviceNumber()) + 32);
	    MAP_USERID_AND_CHANNEL.put(cameraManage.getDeviceIp(), hashMap);
	    return new ResultMoudel(ResultMoudel.SUCCESS_FLAG,hashMap);
	}
	return new ResultMoudel(ResultMoudel.ERROR_FLAG,"登陆失败，状态码为"+hcNetSDK.NET_DVR_GetLastError());

控制：

	NativeLong channel = new NativeLong(controlDto.getChannel());
	NativeLong controlUserId = new NativeLong(controlDto.getControlUserId());
	boolean b = hcNetSDK.NET_DVR_PTZControlWithSpeed_Other(controlUserId, channel, controlDto.getCommand(), controlDto.getRunOrStop(), controlDto.getMotionSpeed());
	if (b){
	    return new ResultMoudel(ResultMoudel.SUCCESS_FLAG,"正在控制，状态码为"+hcNetSDK.NET_DVR_GetLastError());
	}
	return new ResultMoudel(ResultMoudel.ERROR_FLAG,"控制失败，状态码为"+hcNetSDK.NET_DVR_GetLastError());

查询历史视频保存时间：

	NativeLong userIdn = new NativeLong(controlUserId);
	HCNetSDK.NET_DVR_RECORD_TIME_SPAN_INQUIRY ipInquiry = new  HCNetSDK.NET_DVR_RECORD_TIME_SPAN_INQUIRY();
	ipInquiry.dwSize = 68;//68为结构体大小
	ipInquiry.byType = 0;
	HCNetSDK.NET_DVR_RECORD_TIME_SPAN ipResult = new HCNetSDK.NET_DVR_RECORD_TIME_SPAN();
	boolean b = hcNetSDK.NET_DVR_InquiryRecordTimeSpan(userIdn, channel, ipInquiry, ipResult);
	//获取开始时间
	HCNetSDK.NET_DVR_TIME strBeginTime = ipResult.strBeginTime;
	//获取结束时间
	HCNetSDK.NET_DVR_TIME strEndTime = ipResult.strEndTime;

退出登陆释放资源：

//退出登陆
boolean b = hcNetSDK.NET_DVR_Logout(new NativeLong(manageUserId));

//释放资源
boolean b1 = hcNetSDK.NET_DVR_Cleanup();

完整代码：

public class VideoUtils {

    private static HCNetSDK hcNetSDK;
   // 用于缓存登陆信息，以防止短时间内重复登陆
    private static final Map<String,Map<String,Long>> MAP_USERID_AND_CHANNEL = new HashMap<>();

    //登陆
    public static ResultMoudel login(CameraManage cameraManage){
        //加载所需文件
        ResultMoudel resultMoudel = initHCNetSDK();
        if (ResultMoudel.ERROR_FLAG.equals(resultMoudel.getResultFlag())){
            return resultMoudel;
        }

        if (!StringUtils.isEmpty(cameraManage.getDeviceIp()) && MAP_USERID_AND_CHANNEL.containsKey(cameraManage.getDeviceIp())){
            Map<String, Long> stringLongMap = MAP_USERID_AND_CHANNEL.get(cameraManage.getDeviceIp());
            stringLongMap.put("channel",Long.parseLong(cameraManage.getDeviceNumber()) + 32);
            return  new ResultMoudel(ResultMoudel.SUCCESS_FLAG, stringLongMap);
        }

        //登陆
        HCNetSDK.NET_DVR_DEVICEINFO_V30 deviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V30();
        NativeLong userId = hcNetSDK.NET_DVR_Login_V30(cameraManage.getDeviceIp(), (short) cameraManage.getDevicePort().shortValue(), cameraManage.getUsername(), cameraManage.getPassword(), deviceInfo);

        long lUserId = userId.intValue();
        if(lUserId !=-1 || 4294967295L != lUserId) {
            Map<String, Long> hashMap = new HashMap<>();
            hashMap.put("controlUserId",lUserId);
            hashMap.put("channel",Long.parseLong(cameraManage.getDeviceNumber()) + 32);
            MAP_USERID_AND_CHANNEL.put(cameraManage.getDeviceIp(), hashMap);
            return new ResultMoudel(ResultMoudel.SUCCESS_FLAG,hashMap);
        }
        return new ResultMoudel(ResultMoudel.ERROR_FLAG,"登陆失败，状态码为"+hcNetSDK.NET_DVR_GetLastError());
    }

    //控制
    public static ResultMoudel commandControl(ControlDto controlDto) {

        NativeLong channel = new NativeLong(controlDto.getChannel());
        NativeLong controlUserId = new NativeLong(controlDto.getControlUserId());
        boolean b = hcNetSDK.NET_DVR_PTZControlWithSpeed_Other(controlUserId, channel, controlDto.getCommand(), controlDto.getRunOrStop(), controlDto.getMotionSpeed());
        if (b){
            return new ResultMoudel(ResultMoudel.SUCCESS_FLAG,"正在控制，状态码为"+hcNetSDK.NET_DVR_GetLastError());
        }
        return new ResultMoudel(ResultMoudel.ERROR_FLAG,"控制失败，状态码为"+hcNetSDK.NET_DVR_GetLastError());
    }

    //退出登陆
    public static ResultMoudel logout(Long manageUserId) {
        //退出登陆
        boolean b = hcNetSDK.NET_DVR_Logout(new NativeLong(manageUserId));

        return null;
    }

    //释放资源
    public static ResultMoudel release() {

        boolean b1 = hcNetSDK.NET_DVR_Cleanup();
        hcNetSDK = null;
        return null;
    }

    //初始化
    private static ResultMoudel initHCNetSDK() {

        if (hcNetSDK == null){
            System.out.println(HCNetSDK.MAX_NAMELEN);
            hcNetSDK = HCNetSDK.INSTANCE;
            //设置HCNetSDKCom组件库所在路径
            String strPathCom = File.separator +"opt"+ File.separator +"project"+ File.separator +"yc-other" + File.separator + "HCNetLib";
            HCNetSDK.NET_DVR_LOCAL_SDK_PATH struComPath = new HCNetSDK.NET_DVR_LOCAL_SDK_PATH();
            System.out.println(strPathCom.getBytes());
            System.out.println(struComPath.sPath);
            System.arraycopy(strPathCom.getBytes(), 0, struComPath.sPath, 0, strPathCom.length());
            struComPath.write();
            hcNetSDK.NET_DVR_SetSDKInitCfg(2, struComPath.getPointer());

            //设置libcrypto.so所在路径
            HCNetSDK.BYTE_ARRAY ptrByteArrayCrypto = new HCNetSDK.BYTE_ARRAY(256);
            String strPathCrypto = File.separator +"opt"+ File.separator +"project"+ File.separator +"yc-other" + File.separator + "HCNetLib" + File.separator+"libcrypto.so";
            System.arraycopy(strPathCrypto.getBytes(), 0, ptrByteArrayCrypto.byValue, 0, strPathCrypto.length());
            ptrByteArrayCrypto.write();
            hcNetSDK.NET_DVR_SetSDKInitCfg(3, ptrByteArrayCrypto.getPointer());

            //设置libssl.so所在路径
            HCNetSDK.BYTE_ARRAY ptrByteArraySsl = new HCNetSDK.BYTE_ARRAY(256);
            String strPathSsl = File.separator +"opt"+ File.separator +"project"+ File.separator +"yc-other" + File.separator + "HCNetLib" + File.separator+"libssl.so";
            System.arraycopy(strPathSsl.getBytes(), 0, ptrByteArraySsl.byValue, 0, strPathSsl.length());
            ptrByteArraySsl.write();
            hcNetSDK.NET_DVR_SetSDKInitCfg(4, ptrByteArraySsl.getPointer());


            //开启日志
            hcNetSDK.NET_DVR_SetLogToFile(true,"/logs-video/",true);

            //初始化
            boolean initFlag = hcNetSDK.NET_DVR_Init();

            if(!initFlag) {
                return new ResultMoudel(ResultMoudel.ERROR_FLAG,"初始化失败NET_DVR_Init，状态码为"+hcNetSDK.NET_DVR_GetLastError());
            }

        }
        return new ResultMoudel(ResultMoudel.SUCCESS_FLAG,"初始化成功，状态码为："+hcNetSDK.NET_DVR_GetLastError());
    }

    //获取历史视频起始时间
    public static List<String> getHistoryVideoMonthlyCalendar(Long controlUserId, Integer channel) {
        NativeLong userIdn = new NativeLong(controlUserId);
        HCNetSDK.NET_DVR_RECORD_TIME_SPAN_INQUIRY ipInquiry = new  HCNetSDK.NET_DVR_RECORD_TIME_SPAN_INQUIRY();
        ipInquiry.dwSize = 68;
        ipInquiry.byType = 0;
        HCNetSDK.NET_DVR_RECORD_TIME_SPAN ipResult = new HCNetSDK.NET_DVR_RECORD_TIME_SPAN();
        boolean b = hcNetSDK.NET_DVR_InquiryRecordTimeSpan(userIdn, channel, ipInquiry, ipResult);
        //获取开始时间
        HCNetSDK.NET_DVR_TIME strBeginTime = ipResult.strBeginTime;
        //获取结束时间
        HCNetSDK.NET_DVR_TIME strEndTime = ipResult.strEndTime;
        //获取起始时间和结束时间
        List<String> strings = bingMonthlyCalendar(strBeginTime, strEndTime);

        return dateList;
    }

    private static List<String> bingMonthlyCalendar(HCNetSDK.NET_DVR_TIME strBeginTime, HCNetSDK.NET_DVR_TIME strEndTime) {
        int yearStart = strBeginTime.dwYear;
        int monthStart = strBeginTime.dwMonth;
        int dayStart = strBeginTime.dwDay;
        int yearEnd = strEndTime.dwYear;
        int monthEnd = strEndTime.dwMonth;
        int dayEnd = strEndTime.dwDay;
        String start = yearStart+"-"+monthStart+"-"+dayStart;
        String end = yearEnd+"-"+monthEnd+"-"+dayEnd;
        List<String> list1 = new ArrayList<>();
        list1.add(start);
        list1.add(end);
        return list1;
    }
}

视频下载、回放、视频直播、抓图等功能

视频下载、回放、视频直播、抓图等功能可以参考上述方法并按照开发文档的描述进行开发

如果开发遇到什么问题请留言评论呀。

▄█▀█●各位同仁，如果我的代码对你有帮助，请给我一个赞吧！

来源：CSDN

作者：程序人生_高少猛

链接：https://blog.csdn.net/weixin_43954926/article/details/104055701