add dlna classes

MediaBrowser.Model/Dlna/IDeviceDiscovery.cs

@@ -0,0 +1,11 @@
+using System;
+using MediaBrowser.Model.Events;
+
+namespace MediaBrowser.Model.Dlna
+{
+    public interface IDeviceDiscovery
+    {
+        event EventHandler<GenericEventArgs<UpnpDeviceInfo>> DeviceDiscovered;
+        event EventHandler<GenericEventArgs<UpnpDeviceInfo>> DeviceLeft;
+    }
+}

MediaBrowser.Model/Dlna/UpnpDeviceInfo.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using MediaBrowser.Model.Net;
+
+namespace MediaBrowser.Model.Dlna
+{
+    public class UpnpDeviceInfo
+    {
+        public Uri Location { get; set; }
+        public Dictionary<string, string> Headers { get; set; }
+        public IpAddressInfo LocalIpAddress { get; set; }
+        public int LocalPort { get; set; }
+    }
+}

MediaBrowser.Model/MediaBrowser.Model.csproj

@@ -112,6 +112,7 @@
     <Compile Include="Dlna\DirectPlayProfile.cs" />
     <Compile Include="Dlna\EncodingContext.cs" />
     <Compile Include="Dlna\HttpHeaderInfo.cs" />
+    <Compile Include="Dlna\IDeviceDiscovery.cs" />
     <Compile Include="Dlna\ITranscoderSupport.cs" />
     <Compile Include="Dlna\ProfileCondition.cs" />
     <Compile Include="Dlna\ResponseProfile.cs" />
@@ -125,6 +126,7 @@
     <Compile Include="Dlna\SubtitleProfile.cs" />
     <Compile Include="Dlna\SubtitleStreamInfo.cs" />
     <Compile Include="Dlna\TranscodingProfile.cs" />
+    <Compile Include="Dlna\UpnpDeviceInfo.cs" />
     <Compile Include="Dlna\XmlAttribute.cs" />
     <Compile Include="Drawing\ImageOrientation.cs" />
     <Compile Include="Dto\IHasServerId.cs" />