摘要：
DVCDPSMPSServiceDiscoveryServiceSVD服务实现WCFDiscovery，在服务联机时接收注册，并提供通过服务接口检索指定类型服务的功能。1[ServiceContract]2[ManagedServiceContract]3公共接口IServiceDiscoveryService4｛5[Fault Contract]6[OperationContract]7GetServicesResponseGetServices；8｝DeviceConnectorServiceDVC服务负责提供接口创建、连接和保持摄像机设备的活动。使用Gimela.Data.MagpieDatabase文档数据库访问本地数据。使用Gimela.Media.Video创建媒体流数据。
本文为 Dennis Gao 原创技术文章，发表于博客园博客，未经作者本人允许禁止任何形式的转载。
开源倾情奉献系列链接
- 开源倾情奉献：基于.NET打造IP智能网络视频监控系统（一）开放源代码
- 开源倾情奉献：基于.NET打造IP智能网络视频监控系统（二）基础类库介绍
- 开源倾情奉献：基于.NET打造IP智能网络视频监控系统（三）命令行工具集
- 开源倾情奉献：基于.NET打造IP智能网络视频监控系统（四）服务端介绍
- 开源倾情奉献：基于.NET打造IP智能网络视频监控系统（五）客户端介绍
服务端介绍
目前在服务端实现了 4 个 WCF 服务：
- ServiceDiscovery（简称 SVD）
- DeviceConnector（简称 DVC）
- DeviceProfile（简称 DPS）
- MediaPublisher（简称 MPS）
服务建议启动顺序
- SVD - 服务发现目前有时后启动不太稳定，暂时没有调试这个问题。
- DVC
- DPS
- MPS
Service Discovery Service
SVD 服务实现 WCF Discovery ，当有服务上线时接收注册，并通过服务接口实现向外提供检索指定类型服务的功能。
1 [ServiceContract(SessionMode = SessionMode.Allowed)] 2 [ManagedServiceContract] 3 public interface IServiceDiscoveryService 4 { 5 [FaultContract(typeof(ServiceDiscoveryServiceFault))] 6 [OperationContract] 7 GetServicesResponse GetServices(GetServicesRequest request); 8 }
Device Connector Service
DVC 服务负责提供接口创建、连接、保活摄像机设备。
- 使用 Gimela.Data.MagpieDatabase 文档数据库进行本地数据存取。
- 使用 Gimela.Media.Video 进行媒体流数据的建立。
- 使用 Gimela.Net.Rtp 进行媒体流的封装。
- 使用 Gimela.Net.Sockets 进行媒体流的传输。
1 [ManagedServiceContractAttribute] 2 [ServiceContract(SessionMode = SessionMode.Allowed, CallbackContract = typeof(IDeviceConnectorCallbackService))] 3 public interface IDeviceConnectorService 4 { 5 /// <summary> 6 /// 获取摄像机源列表 7 /// </summary> 8 /// <param name="request"></param> 9 /// <returns></returns> 10 [OperationContract] 11 [FaultContract(typeof(DeviceConnectorServiceFault))] 12 GetCameraFiltersResponse GetCameraFilters(GetCameraFiltersRequest request); 13 14 /// <summary> 15 /// 获取桌面源列表 16 /// </summary> 17 /// <param name="request"></param> 18 /// <returns></returns> 19 [OperationContract] 20 [FaultContract(typeof(DeviceConnectorServiceFault))] 21 GetDesktopFiltersResponse GetDesktopFilters(GetDesktopFiltersRequest request); 22 23 /// <summary> 24 /// 获取指定的摄像机 25 /// </summary> 26 /// <param name="request"></param> 27 /// <returns></returns> 28 [OperationContract] 29 [FaultContract(typeof(DeviceConnectorServiceFault))] 30 GetCameraResponse GetCamera(GetCameraRequest request); 31 32 /// <summary> 33 /// 获取全部的摄像机 34 /// </summary> 35 /// <param name="request"></param> 36 /// <returns></returns> 37 [OperationContract] 38 [FaultContract(typeof(DeviceConnectorServiceFault))] 39 GetCamerasResponse GetCameras(GetCamerasRequest request); 40 41 /// <summary> 42 /// 创建摄像机 43 /// </summary> 44 /// <param name="request"></param> 45 /// <returns></returns> 46 [OperationContract] 47 [FaultContract(typeof(DeviceConnectorServiceFault))] 48 CreateCameraResponse CreateCamera(CreateCameraRequest request); 49 50 /// <summary> 51 /// 修改摄像机 52 /// </summary> 53 /// <param name="request"></param> 54 /// <returns></returns> 55 [OperationContract] 56 [FaultContract(typeof(DeviceConnectorServiceFault))] 57 UpdateCameraResponse UpdateCamera(UpdateCameraRequest request); 58 59 /// <summary> 60 /// 删除摄像机 61 /// </summary> 62 /// <param name="request"></param> 63 /// <returns></returns> 64 [OperationContract] 65 [FaultContract(typeof(DeviceConnectorServiceFault))] 66 DeleteCameraResponse DeleteCamera(DeleteCameraRequest request); 67 68 /// <summary> 69 /// 检测摄像机 70 /// </summary> 71 /// <param name="request"></param> 72 /// <returns></returns> 73 [OperationContract] 74 [FaultContract(typeof(DeviceConnectorServiceFault))] 75 PingCameraResponse PingCamera(PingCameraRequest request); 76 77 /// <summary> 78 /// 获取摄像机最新的快照图像 79 /// </summary> 80 /// <param name="request"></param> 81 /// <returns></returns> 82 [OperationContract] 83 [FaultContract(typeof(DeviceConnectorServiceFault))] 84 GetCameraSnapshotResponse GetCameraSnapshot(GetCameraSnapshotRequest request); 85 86 /// <summary> 87 /// 获取已发布摄像机的信息 88 /// </summary> 89 /// <param name="request"></param> 90 /// <returns></returns> 91 [OperationContract] 92 [FaultContract(typeof(DeviceConnectorServiceFault))] 93 GetPublishedCamerasResponse GetPublishedCameras(GetPublishedCamerasRequest request); 94 95 /// <summary> 96 /// 发布摄像机视频流至指定接收器 97 /// </summary> 98 /// <param name="request"></param> 99 /// <returns></returns> 100 [OperationContract] 101 [FaultContract(typeof(DeviceConnectorServiceFault))] 102 PublishCameraResponse PublishCamera(PublishCameraRequest request); 103 104 /// <summary> 105 /// 取消发布摄像机视频流 106 /// </summary> 107 /// <param name="request"></param> 108 /// <returns></returns> 109 [OperationContract] 110 [FaultContract(typeof(DeviceConnectorServiceFault))] 111 UnpublishCameraResponse UnpublishCamera(UnpublishCameraRequest request); 112 113 /// <summary> 114 /// 发布的摄像机保活机制 115 /// </summary> 116 /// <param name="request">摄像机保活机制请求消息</param> 117 /// <returns>摄像机保活机制响应消息</returns> 118 [OperationContract] 119 [FaultContract(typeof(DeviceConnectorServiceFault))] 120 KeepPublishedCameraAliveResponse KeepPublishedCameraAlive(KeepPublishedCameraAliveRequest request); 121 }
Device Profile Service
DPS 服务暴露简洁的接口，对外提供摄像机的基本信息，主要用以屏蔽或代理 DVC 服务。
1 /// <summary> 2 /// 设备信息服务接口 3 /// </summary> 4 [ManagedServiceContractAttribute] 5 [ServiceContract(SessionMode = SessionMode.Allowed)] 6 public interface IDeviceProfileService 7 { 8 /// <summary> 9 /// 获取全部摄像机的信息 10 /// </summary> 11 /// <param name="request">获取全部摄像机的请求信息</param> 12 /// <returns>全部摄像机的响应信息</returns> 13 [OperationContract] 14 [FaultContract(typeof(DeviceProfileServiceFault))] 15 GetCamerasResponse GetCameras(GetCamerasRequest request); 16 17 /// <summary> 18 /// 获取摄像机的信息 19 /// </summary> 20 /// <param name="request">获取摄像机的请求信息</param> 21 /// <returns>摄像机的响应信息</returns> 22 [OperationContract] 23 [FaultContract(typeof(DeviceProfileServiceFault))] 24 GetCameraResponse GetCamera(GetCameraRequest request); 25 }
Media Publisher Service
MPS 服务负责配置摄像机的媒体流的发布。
1 [ManagedServiceContractAttribute] 2 [ServiceContract(SessionMode = SessionMode.Allowed)] 3 public interface IMediaPublisherService 4 { 5 /// <summary> 6 /// 获取已发布摄像机的信息 7 /// </summary> 8 /// <param name="request"></param> 9 /// <returns></returns> 10 [OperationContract] 11 [FaultContract(typeof(MediaPublisherServiceFault))] 12 GetPublishedCamerasResponse GetPublishedCameras(GetPublishedCamerasRequest request); 13 14 /// <summary> 15 /// 发布摄像机视频流至指定接收器 16 /// </summary> 17 /// <param name="request"></param> 18 /// <returns></returns> 19 [OperationContract] 20 [FaultContract(typeof(MediaPublisherServiceFault))] 21 PublishCameraResponse PublishCamera(PublishCameraRequest request); 22 23 /// <summary> 24 /// 取消发布摄像机视频流 25 /// </summary> 26 /// <param name="request"></param> 27 /// <returns></returns> 28 [OperationContract] 29 [FaultContract(typeof(MediaPublisherServiceFault))] 30 UnpublishCameraResponse UnpublishCamera(UnpublishCameraRequest request); 31 }
本文为 Dennis Gao 原创技术文章，发表于博客园博客，未经作者本人允许禁止任何形式的转载。