Java Hikvision SDK の二次開発におけるベスト プラクティス

import com.sun.jna.NativeLong;
import com.sun.jna.Pointer;

public class DeviceConnection {

  private static final int TIMEOUT = 5000; // 连接超时时间，单位为毫秒

  public static NativeLong login(String ip, int port, String username, String password) {
    HCNetSDK.NET_DVR_DEVICEINFO_V30 deviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V30();
    NativeLong lUserID = HCNetSDK.NET_DVR_Login_V30(ip, port, username, password, deviceInfo);
    if (lUserID.longValue() == -1) {
      System.err.println("登录设备失败，错误码：" + HCNetSDK.NET_DVR_GetLastError());
    }
    return lUserID;
  }

  public static void logout(NativeLong lUserID) {
    if (!HCNetSDK.NET_DVR_Logout(lUserID)) {
      System.err.println("登出设备失败，错误码：" + HCNetSDK.NET_DVR_GetLastError());
    }
  }

  public static void main(String[] args) {
    String ip = "192.168.1.100";
    int port = 8000;
    String username = "admin";
    String password = "123456";

    NativeLong lUserID = login(ip, port, username, password);

    // do something...

    logout(lUserID);
  }
}

import com.sun.jna.NativeLong;

public class DeviceStatus {

  public static boolean isDeviceOnline(NativeLong lUserID) {
    HCNetSDK.NET_DVR_WORKSTATE_V30 deviceStatus = new HCNetSDK.NET_DVR_WORKSTATE_V30();
    if (!HCNetSDK.NET_DVR_GetDVRWorkState_V30(lUserID, deviceStatus)) {
      System.err.println("获取设备状态失败，错误码：" + HCNetSDK.NET_DVR_GetLastError());
    }
    return deviceStatus.dwDeviceStatic == 1;
  }

  public static void main(String[] args) {
    NativeLong lUserID = new NativeLong(12345); // 假设已经登录并获取到了lUserID

    if (isDeviceOnline(lUserID)) {
      System.out.println("设备在线");
    } else {
      System.out.println("设备离线");
    }
  }
}

import com.sun.jna.NativeLong;

public class DeviceSetting {

  public static boolean setDeviceTime(NativeLong lUserID) {
    HCNetSDK.NET_DVR_TIME time = new HCNetSDK.NET_DVR_TIME();
    time.dwYear = 2022;
    time.dwMonth = 7;
    time.dwDay = 1;
    time.dwHour = 12;
    time.dwMinute = 0;
    time.dwSecond = 0;
    if (!HCNetSDK.NET_DVR_SetDVRConfig(lUserID, HCNetSDK.NET_DVR_SET_TIMECFG, 0, time.getPointer(),
        time.size(), null)) {
      System.err.println("设置设备时间失败，错误码：" + HCNetSDK.NET_DVR_GetLastError());
    }
    return true;
  }

  public static void main(String[] args) {
    NativeLong lUserID = new NativeLong(12345); // 假设已经登录并获取到了lUserID

    if (setDeviceTime(lUserID)) {
      System.out.println("设置设备时间成功");
    } else {
      System.out.println("设置设备时间失败");
    }
  }
}