private void capture_backPicture(object fileName)
        {
            if (enableback)
            {
                if (capmethod == 0)
                {
                    string sJpegPicFileName;
                    //图片保存路径和文件名 the path and file name to save
                    sJpegPicFileName = (string)fileName;
                    //CreateVehiclePicturePath(ref sJpegPicFileName);
                    int lChannel = 1; //通道号 Channel number

                    CHCNetSDKBack.NET_DVR_JPEGPARA lpJpegPara = new CHCNetSDKBack.NET_DVR_JPEGPARA();
                    lpJpegPara.wPicQuality = 0;    //图像质量 Image quality
                    lpJpegPara.wPicSize    = 0xff; //抓图分辨率 Picture size: 2- 4CIF,0xff- Auto(使用当前码流分辨率),抓图分辨率需要设备支持,更多取值请参考SDK文档


                    //JPEG抓图 Capture a JPEG picture
                    if (!CHCNetSDKBack.NET_DVR_CaptureJPEGPicture(m_lUserIDBack, lChannel, ref lpJpegPara, sJpegPicFileName))
                    {
                        iLastErr = CHCNetSDKBack.NET_DVR_GetLastError();
                        str      = "截取后摄像头照片失败, error code= " + iLastErr;
                        ini.INIIO.saveLogInf(str);
                    }
                    else
                    {
                        str = "截取后摄像头照片成功: " + sJpegPicFileName;
                        ini.INIIO.saveLogInf(str);
                    }
                }
                else
                {
                    string sJpegPicFileName;
                    //图片保存路径和文件名 the path and file name to save
                    sJpegPicFileName = (string)fileName;
                    //CreateVehiclePicturePath(ref sJpegPicFileName);
                    int lChannel = backchanel; //通道号 Channel number

                    CHCNetSDK.NET_DVR_JPEGPARA lpJpegPara = new CHCNetSDK.NET_DVR_JPEGPARA();
                    lpJpegPara.wPicQuality = 0;    //图像质量 Image quality
                    lpJpegPara.wPicSize    = 0xff; //抓图分辨率 Picture size: 2- 4CIF,0xff- Auto(使用当前码流分辨率),抓图分辨率需要设备支持,更多取值请参考SDK文档

                    //JPEG抓图 Capture a JPEG picture
                    if (!CHCNetSDK.NET_DVR_CaptureJPEGPicture(m_lUserID, lChannel, ref lpJpegPara, sJpegPicFileName))
                    {
                        iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                        str      = "截取后摄像头照片失败, error code= " + iLastErr;
                        ini.INIIO.saveLogInf(str);
                        //textBox1.AppendText(str + "\r\n");
                    }
                    else
                    {
                        str = "截取后摄像头照片成功: " + sJpegPicFileName;
                        ini.INIIO.saveLogInf(str);
                    }
                }
            }
            else
            {
                str = "截取后摄像头照片失败,后摄像头未使能 ";
                ini.INIIO.saveLogInf(str);
            }
        }
        /// <summary>
        ///
        /// </summary>
        /// <param name="cameraIndex">1,前摄像头 2,后摄像头</param>
        /// <param name="isTurnedOn"></param>
        /// <param name="handle"></param>
        public void openLiveView(int cameraIndex, IntPtr handle)
        {
            if (cameraIndex == 1)
            {
                if (enablefront)
                {
                    if (capmethod == 0)
                    {
                        if (m_lUserID < 0)
                        {
                            return;
                        }
                        if (m_lRealHandle < 0)
                        {
                            CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
                            lpPreviewInfo.hPlayWnd     = handle;                                                    //预览窗口
                            lpPreviewInfo.lChannel     = 1;                                                         //预te览的设备通道
                            lpPreviewInfo.dwStreamType = 1;                                                         //码流类型:0-主码流,1-子码流,2-码流3,3-码流4,以此类推
                            lpPreviewInfo.dwLinkMode   = 0;                                                         //连接方式:0- TCP方式,1- UDP方式,2- 多播方式,3- RTP方式,4-RTP/RTSP,5-RSTP/HTTP
                            lpPreviewInfo.bBlocked     = true;                                                      //0- 非阻塞取流,1- 阻塞取流

                            CHCNetSDK.REALDATACALLBACK RealData = new CHCNetSDK.REALDATACALLBACK(RealDataCallBack); //预览实时流回调函数
                            IntPtr pUser = new IntPtr();                                                            //用户数据

                            //打开预览 Start live view
                            m_lRealHandle = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, null /*RealData*/, pUser);
                            if (m_lRealHandle < 0)
                            {
                                iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                                str      = "NET_DVR_RealPlay_V40 failed, error code= " + iLastErr; //预览失败,输出错误号
                                return;
                            }
                            else
                            {
                                //预览成功
                                //rectangleShape1.FillColor = Color.Lime;
                                //rectangleShape2.FillColor = Color.Lime;
                                //rectangleShape3.FillColor = Color.Lime;
                                //btnPreview.Text = "Stop Live View";
                            }
                        }
                    }
                    else
                    {
                        if (m_lUserID < 0)
                        {
                            return;
                        }
                        if (m_lRealHandle < 0)
                        {
                            CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
                            lpPreviewInfo.hPlayWnd     = handle;                                                    //预览窗口
                            lpPreviewInfo.lChannel     = frontchanel;                                               //预te览的设备通道
                            lpPreviewInfo.dwStreamType = 1;                                                         //码流类型:0-主码流,1-子码流,2-码流3,3-码流4,以此类推
                            lpPreviewInfo.dwLinkMode   = 0;                                                         //连接方式:0- TCP方式,1- UDP方式,2- 多播方式,3- RTP方式,4-RTP/RTSP,5-RSTP/HTTP
                            lpPreviewInfo.bBlocked     = true;                                                      //0- 非阻塞取流,1- 阻塞取流

                            CHCNetSDK.REALDATACALLBACK RealData = new CHCNetSDK.REALDATACALLBACK(RealDataCallBack); //预览实时流回调函数
                            IntPtr pUser = new IntPtr();                                                            //用户数据

                            //打开预览 Start live view
                            m_lRealHandle = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, null /*RealData*/, pUser);
                            if (m_lRealHandle < 0)
                            {
                                iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                                str      = "NET_DVR_RealPlay_V40 failed, error code= " + iLastErr; //预览失败,输出错误号
                                return;
                            }
                            else
                            {
                                //预览成功
                                //rectangleShape1.FillColor = Color.Lime;
                                //rectangleShape2.FillColor = Color.Lime;
                                //rectangleShape3.FillColor = Color.Lime;
                                //btnPreview.Text = "Stop Live View";
                            }
                        }
                    }
                }
                else
                {
                    ini.INIIO.saveLogInf("前摄像头未使能");
                }
            }
            else if (cameraIndex == 2)
            {
                if (enableback)
                {
                    if (capmethod == 0)
                    {
                        if (m_lUserIDBack < 0)
                        {
                            return;
                        }
                        if (m_lRealHandleBack < 0)
                        {
                            CHCNetSDKBack.NET_DVR_PREVIEWINFO lpPreviewInfoBack = new CHCNetSDKBack.NET_DVR_PREVIEWINFO();
                            lpPreviewInfoBack.hPlayWnd     = handle;                                                                //预览窗口
                            lpPreviewInfoBack.lChannel     = 1;                                                                     //预te览的设备通道
                            lpPreviewInfoBack.dwStreamType = 1;                                                                     //码流类型:0-主码流,1-子码流,2-码流3,3-码流4,以此类推
                            lpPreviewInfoBack.dwLinkMode   = 0;                                                                     //连接方式:0- TCP方式,1- UDP方式,2- 多播方式,3- RTP方式,4-RTP/RTSP,5-RSTP/HTTP
                            lpPreviewInfoBack.bBlocked     = true;                                                                  //0- 非阻塞取流,1- 阻塞取流

                            CHCNetSDKBack.REALDATACALLBACK RealDataBack = new CHCNetSDKBack.REALDATACALLBACK(RealDataCallBackBack); //预览实时流回调函数
                            IntPtr pUserBack = new IntPtr();                                                                        //用户数据

                            //打开预览 Start live view
                            m_lRealHandleBack = CHCNetSDKBack.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfoBack, null /*RealData*/, pUserBack);
                            if (m_lRealHandleBack < 0)
                            {
                                iLastErrBack = CHCNetSDKBack.NET_DVR_GetLastError();
                                strBack      = "NET_DVR_RealPlay_V40 failed, error code= " + iLastErrBack; //预览失败,输出错误号
                                return;
                            }
                            else
                            {
                                //预览成功
                                //rectangleShape4.FillColor = Color.Lime;
                                //rectangleShape5.FillColor = Color.Lime;
                                //rectangleShape6.FillColor = Color.Lime;
                                //btnPreview.Text = "Stop Live View";
                            }
                        }
                    }
                    else
                    {
                        if (m_lUserID < 0)
                        {
                            return;
                        }
                        if (m_lRealHandleBack < 0)
                        {
                            CHCNetSDK.NET_DVR_PREVIEWINFO lpPreviewInfo = new CHCNetSDK.NET_DVR_PREVIEWINFO();
                            lpPreviewInfo.hPlayWnd     = handle;                                                    //预览窗口
                            lpPreviewInfo.lChannel     = backchanel;                                                //预te览的设备通道
                            lpPreviewInfo.dwStreamType = 1;                                                         //码流类型:0-主码流,1-子码流,2-码流3,3-码流4,以此类推
                            lpPreviewInfo.dwLinkMode   = 0;                                                         //连接方式:0- TCP方式,1- UDP方式,2- 多播方式,3- RTP方式,4-RTP/RTSP,5-RSTP/HTTP
                            lpPreviewInfo.bBlocked     = true;                                                      //0- 非阻塞取流,1- 阻塞取流

                            CHCNetSDK.REALDATACALLBACK RealData = new CHCNetSDK.REALDATACALLBACK(RealDataCallBack); //预览实时流回调函数
                            IntPtr pUser = new IntPtr();                                                            //用户数据

                            //打开预览 Start live view
                            m_lRealHandleBack = CHCNetSDK.NET_DVR_RealPlay_V40(m_lUserID, ref lpPreviewInfo, null /*RealData*/, pUser);
                            if (m_lRealHandleBack < 0)
                            {
                                iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                                str      = "NET_DVR_RealPlay_V40 failed, error code= " + iLastErr; //预览失败,输出错误号
                                return;
                            }
                            else
                            {
                                //预览成功
                                //rectangleShape1.FillColor = Color.Lime;
                                //rectangleShape2.FillColor = Color.Lime;
                                //rectangleShape3.FillColor = Color.Lime;
                                //btnPreview.Text = "Stop Live View";
                            }
                        }
                    }
                }
                else
                {
                    ini.INIIO.saveLogInf("后摄像头未使能");
                }
            }
        }
        public bool init_camera(carinfor.captureConfigData camerainfdata)
        {
            capmethod   = camerainfdata.captureMethod;
            enablefront = camerainfdata.ENABLEFRONT;
            enableback  = camerainfdata.ENABLEBACK;
            if (camerainfdata.captureMethod == 0)
            {
                if (camerainfdata.ENABLEFRONT)
                {
                    if (camerainfdata.CAMERAFRONTIP == "" || camerainfdata.CAMERAFRONTPORT == 0 ||
                        camerainfdata.CAMERAFRONTUSER == "" || camerainfdata.CAMERAFRONTPASSWORD == "")
                    {
                        ini.INIIO.saveLogInf("Please input IP, Port, User name and Password!\r\n");
                        //return;
                    }
                    else if (m_lUserID < 0)
                    {
                        string DVRIPAddress  = camerainfdata.CAMERAFRONTIP;          //设备IP地址或者域名
                        Int16  DVRPortNumber = (Int16)camerainfdata.CAMERAFRONTPORT; //设备服务端口号
                        string DVRUserName   = camerainfdata.CAMERAFRONTUSER;        //设备登录用户名
                        string DVRPassword   = camerainfdata.CAMERAFRONTPASSWORD;    //设备登录密码

                        CHCNetSDK.NET_DVR_DEVICEINFO_V30 DeviceInfo = new CHCNetSDK.NET_DVR_DEVICEINFO_V30();

                        //登录设备 Login the device
                        m_lUserID = CHCNetSDK.NET_DVR_Login_V30(DVRIPAddress, DVRPortNumber, DVRUserName, DVRPassword, ref DeviceInfo);
                        if (m_lUserID < 0)
                        {
                            iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                            ini.INIIO.saveLogInf("NET_DVR_Login_V30 failed, error code= " + iLastErr + "\r\n");
                            //return;
                        }
                        else
                        {
                            //登录成功
                            //MessageBox.Show("Login Success!");
                            ini.INIIO.saveLogInf("Camera in front Login Success!" + "\r\n");
                            isCameraFrontReady = true;
                        }
                    }
                    else
                    {
                        //注销登录 Logout the device
                        if (m_lRealHandle >= 0)
                        {
                            ini.INIIO.saveLogInf("Please stop live view firstly" + "\r\n");
                        }

                        if (!CHCNetSDK.NET_DVR_Logout(m_lUserID))
                        {
                            iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                            ini.INIIO.saveLogInf("NET_DVR_Logout failed, error code= " + iLastErr + "\r\n");
                            //return;
                        }
                        m_lUserID = -1;
                    }
                    //return;
                }
                else
                {
                    ini.INIIO.saveLogInf("Camera in front is disable!" + "\r\n");
                }
                if (camerainfdata.ENABLEBACK)
                {
                    if (camerainfdata.CAMERABACKIP == "" || camerainfdata.CAMERABACKPORT == 0 ||
                        camerainfdata.CAMERABACKUSER == "" || camerainfdata.CAMERABACKPASSWORD == "")
                    {
                        ini.INIIO.saveLogInf("Please input IP, Port, User name and Password!" + "\r\n");
                        //return;
                    }
                    else if (m_lUserIDBack < 0)
                    {
                        string DVRIPAddress  = camerainfdata.CAMERABACKIP;          //设备IP地址或者域名
                        Int16  DVRPortNumber = (Int16)camerainfdata.CAMERABACKPORT; //设备服务端口号
                        string DVRUserName   = camerainfdata.CAMERABACKUSER;        //设备登录用户名
                        string DVRPassword   = camerainfdata.CAMERABACKPASSWORD;    //设备登录密码

                        CHCNetSDKBack.NET_DVR_DEVICEINFO_V30 DeviceInfo = new CHCNetSDKBack.NET_DVR_DEVICEINFO_V30();

                        //登录设备 Login the device
                        m_lUserIDBack = CHCNetSDKBack.NET_DVR_Login_V30(DVRIPAddress, DVRPortNumber, DVRUserName, DVRPassword, ref DeviceInfo);
                        if (m_lUserIDBack < 0)
                        {
                            iLastErrBack = CHCNetSDKBack.NET_DVR_GetLastError();
                            ini.INIIO.saveLogInf("NET_DVR_Login_V30 failed, error code= " + iLastErrBack + "\r\n");
                            //return;
                        }
                        else
                        {
                            //登录成功
                            //MessageBox.Show("Login Success!");
                            ini.INIIO.saveLogInf("Camera in Back Login Success!" + "\r\n");
                            isCameraBackReady = true;
                        }
                    }
                    else
                    {
                        //注销登录 Logout the device
                        if (m_lRealHandleBack >= 0)
                        {
                            ini.INIIO.saveLogInf("Please stop live view firstly" + "\r\n");
                        }

                        if (!CHCNetSDKBack.NET_DVR_Logout(m_lUserIDBack))
                        {
                            iLastErrBack = CHCNetSDKBack.NET_DVR_GetLastError();
                            ini.INIIO.saveLogInf("NET_DVR_Logout failed, error code= " + iLastErrBack + "\r\n");
                            //return;
                        }
                        m_lUserIDBack = -1;
                    }
                    //return;
                }
                else
                {
                    ini.INIIO.saveLogInf("Camera in Back is disable!" + "\r\n");
                }
            }
            else
            {
                frontchanel = camerainfdata.NVRFRONTCHANEL;
                backchanel  = camerainfdata.NVRBACKCHANEL;
                if (camerainfdata.ENABLEFRONT || camerainfdata.ENABLEBACK)
                {
                    if (camerainfdata.NVRIP == "" || camerainfdata.NVRPORT == 0 ||
                        camerainfdata.NVRUSER == "" || camerainfdata.NVRPASSWORD == "")
                    {
                        ini.INIIO.saveLogInf("Please input IP, Port, User name and Password!\r\n");
                        //return;
                    }
                    else if (m_lUserID < 0)
                    {
                        string DVRIPAddress  = camerainfdata.NVRIP;          //设备IP地址或者域名
                        Int16  DVRPortNumber = (Int16)camerainfdata.NVRPORT; //设备服务端口号
                        string DVRUserName   = camerainfdata.NVRUSER;        //设备登录用户名
                        string DVRPassword   = camerainfdata.NVRPASSWORD;    //设备登录密码

                        CHCNetSDK.NET_DVR_DEVICEINFO_V30 DeviceInfo = new CHCNetSDK.NET_DVR_DEVICEINFO_V30();

                        //登录设备 Login the device
                        m_lUserID = CHCNetSDK.NET_DVR_Login_V30(DVRIPAddress, DVRPortNumber, DVRUserName, DVRPassword, ref DeviceInfo);
                        if (m_lUserID < 0)
                        {
                            iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                            ini.INIIO.saveLogInf("NET_DVR_Login_V30 failed, error code= " + iLastErr + "\r\n");
                            //return;
                        }
                        else
                        {
                            //登录成功
                            //MessageBox.Show("Login Success!");
                            ini.INIIO.saveLogInf("Camera in front Login Success!" + "\r\n");
                            isCameraFrontReady = true;
                        }
                    }
                    else
                    {
                        //注销登录 Logout the device
                        if (m_lRealHandle >= 0)
                        {
                            ini.INIIO.saveLogInf("Please stop live view firstly" + "\r\n");
                        }

                        if (!CHCNetSDK.NET_DVR_Logout(m_lUserID))
                        {
                            iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                            ini.INIIO.saveLogInf("NET_DVR_Logout failed, error code= " + iLastErr + "\r\n");
                            //return;
                        }
                        m_lUserID = -1;
                    }
                }
            }
            return(isCameraFrontReady || isCameraBackReady);
        }
 public void stopLiveView(int cameraIndex)
 {
     if (cameraIndex == 1)
     {
         if (enablefront)
         {
             if (capmethod == 0)
             {
                 if (m_lUserID < 0)
                 {
                     return;
                 }
                 if (m_lRealHandle >= 0)
                 {                            //停止预览 Stop live view
                     if (!CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandle))
                     {
                         iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                         str      = "NET_DVR_StopRealPlay failed, error code= " + iLastErr;
                         return;
                     }
                     m_lRealHandle = -1;
                     //rectangleShape1.FillColor = Color.Red;
                     //rectangleShape2.FillColor = Color.Red;
                     //rectangleShape3.FillColor = Color.Red;
                 }
             }
             else
             {
                 if (m_lUserID < 0)
                 {
                     return;
                 }
                 if (m_lRealHandle >= 0)
                 {
                     //停止预览 Stop live view
                     if (!CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandle))
                     {
                         iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                         str      = "NET_DVR_StopRealPlay failed, error code= " + iLastErr;
                         return;
                     }
                     m_lRealHandle = -1;
                     //rectangleShape1.FillColor = Color.Red;
                     //rectangleShape2.FillColor = Color.Red;
                     //rectangleShape3.FillColor = Color.Red;
                 }
             }
         }
         else
         {
             ini.INIIO.saveLogInf("前摄像头未使能");
         }
     }
     else if (cameraIndex == 2)
     {
         if (enableback)
         {
             if (capmethod == 0)
             {
                 if (m_lUserIDBack < 0)
                 {
                     return;
                 }
                 if (m_lRealHandleBack >= 0)
                 {
                     //停止预览 Stop live view
                     if (!CHCNetSDKBack.NET_DVR_StopRealPlay(m_lRealHandleBack))
                     {
                         iLastErrBack = CHCNetSDKBack.NET_DVR_GetLastError();
                         strBack      = "NET_DVR_StopRealPlay failed, error code= " + iLastErrBack;
                         return;
                     }
                     m_lRealHandleBack = -1;
                     //rectangleShape4.FillColor = Color.Red;
                     //rectangleShape5.FillColor = Color.Red;
                     //rectangleShape6.FillColor = Color.Red;
                 }
             }
             else
             {
                 if (m_lUserIDBack < 0)
                 {
                     return;
                 }
                 if (m_lRealHandleBack >= 0)
                 {
                     //停止预览 Stop live view
                     if (!CHCNetSDK.NET_DVR_StopRealPlay(m_lRealHandleBack))
                     {
                         iLastErr = CHCNetSDK.NET_DVR_GetLastError();
                         str      = "NET_DVR_StopRealPlay failed, error code= " + iLastErr;
                         return;
                     }
                     m_lRealHandleBack = -1;
                     //rectangleShape1.FillColor = Color.Red;
                     //rectangleShape2.FillColor = Color.Red;
                     //rectangleShape3.FillColor = Color.Red;
                 }
             }
         }
         else
         {
             ini.INIIO.saveLogInf("后摄像头未使能");
         }
     }
 }