Introduction to easycvr interfacing with Huawei IVS subscription camera and user change request interface

EasyCVR The platform itself has subscription function , Subscription is TSINGSEE Green rhinoceros video development is a mechanism in the national standard system , The main purpose is to maintain the directory structure between upper and lower domains , Equipment status is consistent . In our development EasyCVR Docking with Huawei IVS Platform time , This subscription can change the camera and user through the interface , In this article, we will introduce this interface .

After the camera and user change subscription are successful , When the video surveillance platform generates camera and user changes , Will be pushed to the caller , For the content of push information, see IVS_USER_CAMERA_INFO_CHANGE Structure . Usage scenarios for child domains , Subscribe first and then get the user list of the subordinate domain , This subscription will take effect .

The code is as follows ：

//cpp code
IVS_INT32 IVS_SDK_SubscribeUserCameraInfoChange( 
     IVS_INT32       iSessionID, 
     const IVS_CHAR  *pReqXml);

//cpp code
IVS_UINT32 uiUserID = 0; 
 CString strUserId = ""; 
 IVS_INT32 iRet = IVS_SDK_GetUserID(iSessionID, &uiUserID);// Get users ID 
 if (IVS_SUCCEED == iRet)  
 {  
     strUserId.Format("%d", uiUserID);  
 } 
 else 
 { 
     return; 
 } 

 CString strReqXml = ""; 
 strReqXml += "<Content>"; 
 strReqXml +=  "<DomainCode>810960fa859747abaabc9ee3e8328f58</DomainCode>"; 
 strReqXml +=  "<Subscribe>"; 
  strReqXml +=       "<SubscribeID>64</SubscribeID>"; 
  strReqXml +=         "<SubscribeType>1</SubscribeType>"; //1  user ;2  The camera ;3  User camera simultaneous subscription ;
 strReqXml +=  "</Subscribe>"; 
 strReqXml += "</Content>"; 

 iRet = IVS_SDK_SubscribeUserCameraInfoChange(iSessionID, strReqXml);
 if (IVS_SUCCEED == iRet)  
 {  
     // success  
 }