rework dlna project

RSSDP/SsdpEmbeddedDevice.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Rssdp
+{
+	/// <summary>
+	/// Represents a device that is a descendant of a <see cref="SsdpRootDevice"/> instance.
+	/// </summary>
+	public class SsdpEmbeddedDevice : SsdpDevice
+	{
+
+		#region Fields
+		
+		private SsdpRootDevice _RootDevice;
+
+		#endregion
+
+		#region Constructors
+
+		/// <summary>
+		/// Default constructor.
+		/// </summary>
+		public SsdpEmbeddedDevice()
+		{
+		}
+
+		/// <summary>
+		/// Deserialisation constructor.
+		/// </summary>
+		/// <param name="deviceDescriptionXml">A UPnP device description XML document.</param>
+		/// <exception cref="System.ArgumentNullException">Thrown if the <paramref name="deviceDescriptionXml"/> argument is null.</exception>
+		/// <exception cref="System.ArgumentException">Thrown if the <paramref name="deviceDescriptionXml"/> argument is empty.</exception>
+		public SsdpEmbeddedDevice(string deviceDescriptionXml)
+			: base(deviceDescriptionXml)
+		{
+		}
+
+		#endregion
+
+		#region Public Properties
+
+		/// <summary>
+		/// Returns the <see cref="SsdpRootDevice"/> that is this device's first ancestor. If this device is itself an <see cref="SsdpRootDevice"/>, then returns a reference to itself.
+		/// </summary>
+		public SsdpRootDevice RootDevice
+		{
+			get
+			{
+				return _RootDevice;
+			}
+			internal set
+			{
+				_RootDevice = value;
+				lock (this.Devices)
+				{
+					foreach (var embeddedDevice in this.Devices)
+					{
+						((SsdpEmbeddedDevice)embeddedDevice).RootDevice = _RootDevice;
+					}
+				}
+			}
+		}
+
+		#endregion
+
+	}
+}