C#中怎么连接海康威视

发布时间：2023-02-27 09:28:17 作者：iii
来源：亿速云阅读：583

C#中怎么连接海康威视

引言

海康威视是全球领先的安防产品及行业解决方案提供商，其产品广泛应用于视频监控、智能交通、智能建筑等领域。为了便于开发者集成海康威视的设备，海康威视提供了丰富的SDK（软件开发工具包）。本文将详细介绍如何在C#中连接海康威视设备，并实现常见的功能，如实时预览、视频回放、云台控制等。

海康威视SDK简介

海康威视SDK是海康威视为开发者提供的一套软件开发工具包，包含了丰富的API接口，支持多种编程语言，如C、C++、C#、Java等。通过SDK，开发者可以方便地集成海康威视的设备，实现视频监控、报警处理、设备管理等功能。

环境准备

在开始之前，我们需要准备以下环境：

操作系统：Windows 7/8/10（64位）
开发工具：Visual Studio 2015或更高版本
海康威视SDK：从海康威视官网下载最新版本的SDK
海康威视设备：如网络摄像头、NVR等

SDK安装与配置

下载SDK：从海康威视官网下载最新版本的SDK，解压到本地目录。
安装SDK：运行SDK中的安装程序，按照提示完成安装。
配置环境变量：将SDK的bin目录添加到系统的PATH环境变量中。

C#项目创建与配置

创建C#项目：打开Visual Studio，创建一个新的C#控制台应用程序项目。
添加SDK引用：在项目中添加对海康威视SDK的引用。右键点击项目 -> 添加 -> 引用 -> 浏览，选择SDK中的HCNetSDK.dll文件。
配置项目属性：在项目属性中，将目标平台设置为x64，以确保与64位的SDK兼容。

初始化SDK

在使用SDK之前，需要先进行初始化操作。初始化SDK的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_Init();

    static void Main(string[] args)
    {
        if (NET_DVR_Init())
        {
            Console.WriteLine("SDK初始化成功！");
        }
        else
        {
            Console.WriteLine("SDK初始化失败！");
        }
    }
}

设备登录

在初始化SDK之后，我们需要登录到海康威视设备。设备登录的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern int NET_DVR_Login_V30(string sDVRIP, short wDVRPort, string sUserName, string sPassword, ref NET_DVR_DEVICEINFO_V30 lpDeviceInfo);

    [StructLayout(LayoutKind.Sequential)]
    public struct NET_DVR_DEVICEINFO_V30
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 48)]
        public byte[] sSerialNumber;
        public byte byAlarmInPortNum;
        public byte byAlarmOutPortNum;
        public byte byDiskNum;
        public byte byDVRType;
        public byte byChanNum;
        public byte byStartChan;
        public byte byAudioChanNum;
        public byte byIPChanNum;
        public byte byZeroChanNum;
        public byte byMainProto;
        public byte bySubProto;
        public byte bySupport;
        public byte bySupport1;
        public byte bySupport2;
        public byte bySupport3;
        public byte byAnalogAlarmInPortNum;
        public byte byStartAlarmInNo;
        public byte byStartAlarmOutNo;
        public byte byStartIpChanNo;
        public byte byStartZeroChanNo;
        public byte byStartDChanNo;
        public byte byStartDTalkChanNo;
        public byte byHighDChanNum;
        public byte bySupport4;
        public byte byLanguageType;
        public byte byVoiceInChanNum;
        public byte byStartVoiceInChanNo;
        public byte byRes1;
        public byte byRes2;
    }

    static void Main(string[] args)
    {
        string ip = "192.168.1.64";
        short port = 8000;
        string username = "admin";
        string password = "12345";

        NET_DVR_DEVICEINFO_V30 deviceInfo = new NET_DVR_DEVICEINFO_V30();
        int userId = NET_DVR_Login_V30(ip, port, username, password, ref deviceInfo);

        if (userId >= 0)
        {
            Console.WriteLine("设备登录成功！");
        }
        else
        {
            Console.WriteLine("设备登录失败！");
        }
    }
}

实时预览

登录设备后，我们可以开始实时预览视频。实时预览的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern int NET_DVR_RealPlay_V40(int lUserID, ref NET_DVR_PREVIEWINFO lpPreviewInfo, RealDataCallBack fRealDataCallBack, IntPtr pUser);

    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_StopRealPlay(int lRealHandle);

    [StructLayout(LayoutKind.Sequential)]
    public struct NET_DVR_PREVIEWINFO
    {
        public int lChannel;
        public int dwStreamType;
        public int dwLinkMode;
        public IntPtr hPlayWnd;
        public bool bBlocked;
        public bool bPassbackRecord;
        public byte byPreviewMode;
    }

    public delegate void RealDataCallBack(int lRealHandle, uint dwDataType, IntPtr pBuffer, uint dwBufSize, IntPtr pUser);

    static void Main(string[] args)
    {
        int userId = 0; // 假设已经登录成功，获取到userId
        NET_DVR_PREVIEWINFO previewInfo = new NET_DVR_PREVIEWINFO
        {
            lChannel = 1,
            dwStreamType = 0,
            dwLinkMode = 0,
            hPlayWnd = IntPtr.Zero,
            bBlocked = true,
            bPassbackRecord = false,
            byPreviewMode = 0
        };

        int realHandle = NET_DVR_RealPlay_V40(userId, ref previewInfo, null, IntPtr.Zero);

        if (realHandle >= 0)
        {
            Console.WriteLine("实时预览启动成功！");
        }
        else
        {
            Console.WriteLine("实时预览启动失败！");
        }

        // 停止预览
        NET_DVR_StopRealPlay(realHandle);
    }
}

视频回放

除了实时预览，我们还可以进行视频回放。视频回放的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern int NET_DVR_PlayBackByName(int lUserID, string sFileName, IntPtr hWnd);

    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_StopPlayBack(int lPlayHandle);

    static void Main(string[] args)
    {
        int userId = 0; // 假设已经登录成功，获取到userId
        string fileName = "20230101080000_20230101090000.mp4"; // 回放文件名

        int playHandle = NET_DVR_PlayBackByName(userId, fileName, IntPtr.Zero);

        if (playHandle >= 0)
        {
            Console.WriteLine("视频回放启动成功！");
        }
        else
        {
            Console.WriteLine("视频回放启动失败！");
        }

        // 停止回放
        NET_DVR_StopPlayBack(playHandle);
    }
}

云台控制

云台控制是视频监控中的重要功能之一。通过云台控制，我们可以调整摄像头的视角。云台控制的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_PTZControl_Other(int lUserID, int lChannel, uint dwPTZCommand, uint dwStop, uint dwSpeed);

    static void Main(string[] args)
    {
        int userId = 0; // 假设已经登录成功，获取到userId
        int channel = 1; // 通道号
        uint command = 21; // 云台控制命令，21表示向上
        uint stop = 0; // 0表示开始，1表示停止
        uint speed = 3; // 速度，范围1-7

        bool result = NET_DVR_PTZControl_Other(userId, channel, command, stop, speed);

        if (result)
        {
            Console.WriteLine("云台控制成功！");
        }
        else
        {
            Console.WriteLine("云台控制失败！");
        }
    }
}

报警处理

报警处理是视频监控系统中的重要功能。通过报警处理，我们可以及时响应设备发出的报警信号。报警处理的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_SetDVRMessageCallBack_V31(MessageCallBack fMessageCallBack, IntPtr pUser);

    public delegate void MessageCallBack(int lCommand, IntPtr pAlarmer, IntPtr pAlarmInfo, uint dwBufLen, IntPtr pUser);

    static void Main(string[] args)
    {
        int userId = 0; // 假设已经登录成功，获取到userId

        bool result = NET_DVR_SetDVRMessageCallBack_V31(OnMessageCallBack, IntPtr.Zero);

        if (result)
        {
            Console.WriteLine("报警回调设置成功！");
        }
        else
        {
            Console.WriteLine("报警回调设置失败！");
        }
    }

    private static void OnMessageCallBack(int lCommand, IntPtr pAlarmer, IntPtr pAlarmInfo, uint dwBufLen, IntPtr pUser)
    {
        Console.WriteLine("收到报警信息！");
    }
}

录像与截图

录像与截图是视频监控系统中的常见功能。通过录像与截图，我们可以保存重要的视频片段或图像。录像与截图的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_SaveRealData(int lRealHandle, string sFileName);

    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_CapturePicture(int lRealHandle, string sFileName);

    static void Main(string[] args)
    {
        int realHandle = 0; // 假设已经启动实时预览，获取到realHandle

        // 录像
        bool result = NET_DVR_SaveRealData(realHandle, "record.mp4");

        if (result)
        {
            Console.WriteLine("录像成功！");
        }
        else
        {
            Console.WriteLine("录像失败！");
        }

        // 截图
        result = NET_DVR_CapturePicture(realHandle, "capture.jpg");

        if (result)
        {
            Console.WriteLine("截图成功！");
        }
        else
        {
            Console.WriteLine("截图失败！");
        }
    }
}

设备信息获取

获取设备信息是设备管理中的重要功能。通过获取设备信息，我们可以了解设备的型号、序列号、通道数等信息。设备信息获取的代码如下：

using System;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("HCNetSDK.dll")]
    public static extern bool NET_DVR_GetDVRConfig(int lUserID, uint dwCommand, int lChannel, IntPtr lpOutBuffer, uint dwOutBufferSize, ref uint lpBytesReturned);

    [StructLayout(LayoutKind.Sequential)]
    public struct NET_DVR_DEVICECFG_V40
    {
        public uint dwSize;
        public byte byDVRType;
        public byte byChanNum;
        public byte byStartChan;
        public byte byAudioChanNum;
        public byte byIPChanNum;
        public byte byZeroChanNum;
        public byte byMainProto;
        public byte bySubProto;
        public byte bySupport;
        public byte bySupport1;
        public byte bySupport2;
        public byte bySupport3;
        public byte byAnalogAlarmInPortNum;
        public byte byStartAlarmInNo;
        public byte byStartAlarmOutNo;
        public byte byStartIpChanNo;
        public byte byStartZeroChanNo;
        public byte byStartDChanNo;
        public byte byStartDTalkChanNo;
        public byte byHighDChanNum;
        public byte bySupport4;
        public byte byLanguageType;
        public byte byVoiceInChanNum;
        public byte byStartVoiceInChanNo;
        public byte byRes1;
        public byte byRes2;
    }

    static void Main(string[] args)
    {
        int userId = 0; // 假设已经登录成功，获取到userId
        uint command = 100; // 获取设备配置的命令
        int channel = 1; // 通道号
        NET_DVR_DEVICECFG_V40 deviceCfg = new NET_DVR_DEVICECFG_V40();
        uint bytesReturned = 0;

        IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(deviceCfg));
        Marshal.StructureToPtr(deviceCfg, ptr, false);

        bool result = NET_DVR_GetDVRConfig(userId, command, channel, ptr, (uint)Marshal.SizeOf(deviceCfg), ref bytesReturned);

        if (result)
        {
            deviceCfg = (NET_DVR_DEVICECFG_V40)Marshal.PtrToStructure(ptr, typeof(NET_DVR_DEVICECFG_V40));
            Console.WriteLine("设备信息获取成功！");
            Console.WriteLine("设备类型：" + deviceCfg.byDVRType);
            Console.WriteLine("通道数：" + deviceCfg.byChanNum);
        }
        else
        {
            Console.WriteLine("设备信息获取失败！");
        }

        Marshal.FreeHGlobal(ptr);
    }
}

设备配置

设备配置是设备管理中的重要功能。通过设备配置，我们可以修改设备的参数，如IP地址、端口号、用户名、密码等。设备配置的代码如下：

”`csharp using System; using System.Runtime.InteropServices;

class Program { [DllImport(“HCNetSDK.dll”)] public static extern bool NET_DVR_SetDVRConfig(int lUserID, uint dwCommand, int lChannel, IntPtr lpInBuffer, uint dwInBufferSize);

[StructLayout(LayoutKind.Sequential)]
public struct NET_DVR_NETCFG_V30
{
    public uint dwSize;
    public byte byDhcpEnable;
    public byte byRes1;
    public byte byRes2;
    public byte byRes3;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] sIpAddress;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] sSubNetMask;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] sGateway;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] sDnsServer1;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
    public byte[] sDnsServer2;
    public ushort wHttpPortNo;
    public ushort wTcpPortNo;
    public ushort wUdpPortNo;
    public ushort wMaxConn;
    public ushort wAlarmListenPortNo;
    public ushort wVideoListenPortNo;
    public ushort wPreviewListenPortNo;
    public ushort wPreviewListenPortNo2;
    public ushort wPreviewListenPortNo3;
    public ushort wPreviewListenPortNo4;
    public ushort wPreviewListenPortNo5;
    public ushort wPreviewListenPortNo6;
    public ushort wPreviewListenPortNo7;
    public ushort wPreviewListenPortNo8;
    public ushort wPreviewListenPortNo9;
    public ushort wPreviewListenPortNo10;
    public ushort wPreviewListenPortNo11;
    public ushort wPreviewListenPortNo12;
    public ushort wPreviewListenPortNo13;
    public ushort wPreviewListenPortNo14;
    public ushort wPreviewListenPortNo15;
    public ushort wPreviewListenPortNo16;
    public ushort wPreviewListenPortNo17;
    public ushort wPreviewListenPortNo18;
    public ushort wPreviewListenPortNo19;
    public ushort wPreviewListenPortNo20;
    public ushort wPreviewListenPortNo21;
    public ushort wPreviewListenPortNo22;
    public ushort wPreviewListenPortNo23;
    public ushort wPreviewListenPortNo24;
    public ushort wPreviewListenPortNo25;
    public ushort wPreviewListenPortNo26;
    public ushort wPreviewListenPortNo27;
    public ushort

C#中怎么连接海康威视

C#中怎么连接海康威视

目录

引言

海康威视SDK简介

环境准备

SDK安装与配置

C#项目创建与配置

初始化SDK

设备登录

实时预览

视频回放

云台控制

报警处理

录像与截图

设备信息获取

设备配置

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