WCF 및 Onvif 간단한 예제

Question

누구나 WCF를 사용하여 Onvif 카메라 검색의 간단한 예가 있습니까? 또는 WCF를 사용하여 Onvif 표준을 사용하여 카메라에 명령을 보내는 다른 예는 무엇입니까? Onvif DM, Onvif 장치 테스트 도구 및 Onvif 프로그래밍 가이드를 알고 있습니다. 그러나 구현 방법을 모릅니다.

는

Answer 1

는 system.serviceModel 및 System.ServiceModel.Discovery 어셈블리를 추가 감사드립니다. 이 코드입니다 :

// perform the onvif search (this is the MAIN) 
    public static IEnumerable<EndpointDiscoveryMetadata> SearchOnvifDevices() 
    { 
     // object used to define the search criteria to find onvif device on the network 
     var findCriteria = new FindCriteria(); 

     // what device type to find? this is required 
     var contractTypeName = "NetworkVideoTransmitter"; // the other possible value is 'Device' 
     var contractTypeNamespace = "http://www.onvif.org/ver10/network/wsdl"; 
     // those parametes are defined by onvif standard 
     findCriteria.ContractTypeNames.Add(new XmlQualifiedName(contractTypeName, contractTypeNamespace)); 

     // you can canfigure the search with TimeOut, MaxResults, Scope, DeviceType, MaxResponseDelay, TransportSettings.TimeToLive, ... 
     findCriteria.MaxResults = 100; 
     findCriteria.Duration = new TimeSpan(10000); 
     // ... 

     //// you can specify scopes to restrict the search 
     //SetScopes(findCriteria, new[] { "onvif://www.onvif.org/type/ptz" }); 


     // object used to search the devices using the FindCriteria. 
     var discoveryClient = new DiscoveryClient(new UdpDiscoveryEndpoint(DiscoveryVersion.WSDiscoveryApril2005)); 

     // search 
     var findResponse = discoveryClient.Find(findCriteria); 
     return findResponse.Endpoints; 
    } 

    // set scopes to find devices that only match the specifieds scopes 
    public static void SetScopes(FindCriteria findCriteria, IEnumerable<string> scopes) 
    { 
     findCriteria.ScopeMatchBy = FindCriteria.ScopeMatchByExact; 
     if (scopes != null) 
     { 
      foreach (var item in scopes) 
       findCriteria.Scopes.Add(new Uri(item)); 
     } 


     // for example: 
     // a device can have set the following scopes: 
     // onvif://www.onvif.org/type/ptz 
     // onvif://www.onvif.org/hardware/D1-566 
     // onvif://www.onvif.org/location/country/china 
     // onvif://www.onvif.org/location/city/bejing 
     // onvif://www.onvif.org/name/ARV-453 

     // then if you perform the search with the scope 'onvif://www.onvif.org/location/country/china' it will resolve the device 
     // but if the search include the scope 'onvif://www.onvif.org/hardware/D1' then it will not. 
    } 

    // you can use this method to get parse endpoints to device 
    public static IEnumerable<Device> GetDevices(IEnumerable<EndpointDiscoveryMetadata> endpoints) 
    { 
     var result = new List<Device>(); 

     var id = 0; 
     foreach (var endpoint in endpoints) 
     { 
      foreach (var listenUri in endpoint.ListenUris) 
      { 
       var newDevice = new Device 
       { 
        Id = id, 
        ListenUri = listenUri, 
        EndpointDiscoveryMetadata = endpoint 
       }; 
       result.Add(newDevice); 
       id++; 
      } 
     } 

     return result; 
    } 

    // class used to identify a Device 
    public class Device 
    { 
     // id to identify the device 
     public int Id; 

     // uri where the device is listening 
     public Uri ListenUri; 

     // endpoint where the device was founded 
     public EndpointDiscoveryMetadata EndpointDiscoveryMetadata; 
    } 

당신은 다음과 같이 사용할 수 있습니다 :

// discover endpoints 
    var endpoints = SearchOnvifDevices(); 

    // if you want, parse to devices 
    var devices = GetDevices(endpoints); 

, 난 따라서 테스터 수는 없지만,이 코드를 손에 어떤 장치가없는하세요 작동해야합니다. 어떤 제안이나 오류도 댓글을 달았습니다.

Answer 2

수정

#region SearchOnvifDev-Proba1 
    private static void SearchOnvifDev() 
    { 
     ServicePointManager.Expect100Continue = false; 

     var contractTypeName = "Device"; // the other possible value is 'Device' or 'NetworkVideoTransmitter' 
     var contractTypeNamespace = "http://www.onvif.org/ver10/network/wsdl"; 

     var endPoint = new UdpDiscoveryEndpoint(DiscoveryVersion.WSDiscoveryApril2005); 

     var discoveryClient = new DiscoveryClient(endPoint); 

     FindCriteria findCriteria = new FindCriteria(); 
     //visak ispod 
     findCriteria.ContractTypeNames.Add(new XmlQualifiedName(contractTypeName, contractTypeNamespace)); 
     findCriteria.Duration = TimeSpan.MaxValue; 
     findCriteria.MaxResults = 1000000; 
     discoveryClient.FindAsync(findCriteria); 
     //events 
     discoveryClient.FindProgressChanged += discoveryClient_FindProgressChanged; 
     discoveryClient.FindCompleted += discoveryClient_FindCompleted; 

     Console.ReadKey(); 

    } 
    #endregion 

    #region endEvent for discovery client 
    static void discoveryClient_FindCompleted(object sender, FindCompletedEventArgs e) 
    { 
     Console.WriteLine("the end"); 
    } 
    #endregion 

    #region changeEvent for discovery client 
    static void discoveryClient_FindProgressChanged(object sender, FindProgressChangedEventArgs e) 
    { 
     var lines = "\r\n--------" + DateTime.Now.ToString() + "\r\n" + e.EndpointDiscoveryMetadata.Address.Uri.AbsoluteUri.ToString(); 
     Console.WriteLine("\r\n--------" + DateTime.Now.ToString() + "\r\n" + e.EndpointDiscoveryMetadata.Address.Uri.AbsoluteUri.ToString()); 

     using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"info.txt", true)) 
     { 
      file.WriteLine(lines); 
     } 

     foreach (var item in e.EndpointDiscoveryMetadata.ListenUris) 
     { 
      string uri = item.OriginalString; 

      Console.WriteLine(uri.ToString()); 

      //this camera isnt found :(
      if (uri.Contains("http://192.168.4.230/")) 
      { 
       Console.WriteLine("BINGO"); 
      } 
     } 
    } 
    #endregion