hawkeye camera support(not tested)

framework/Inspectron.HawkEye/RTSP/Sdp/Origin.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Globalization;
+
+namespace Inspectron.HawkEye.RTSP.Sdp
+{
+    /// <summary>
+    /// Object ot represent orgin in an Session Description Protocol 
+    /// </summary>
+    public class Origin
+    {
+        public Origin()
+        {
+        }
+
+        /// <summary>
+        /// Parses the specified origin string.
+        /// </summary>
+        /// <param name="originString">The string to convert to origin object.</param>
+        /// <returns></returns>
+        public static Origin Parse(string originString)
+        {
+            if (originString == null)
+                throw new ArgumentNullException("originString");
+
+            string[] parts = originString.Split(' ');
+
+            if (parts.Length != 6)
+                throw new FormatException("Number of element invalid in origin string.");
+
+            Origin result = new Origin();
+            result.Username = parts[0];
+            result.SessionId = parts[1];
+            result.SessionVersion = parts[2];
+            result.NetType = parts[3];
+            result.AddressType = parts[4];
+            result.UnicastAddress = parts[5];
+
+            return result;
+        }
+
+        /// <summary>
+        /// Gets or sets the username.
+        /// </summary>
+        /// <remarks>It is the user's login on the originating host, or it is "-"
+        /// if the originating host does not support the concept of user IDs.
+        /// This MUST NOT contain spaces</remarks>
+        /// <value>The username.</value>
+        public string Username { get; set; }
+
+        /// <summary>
+        /// Gets or sets the session id.
+        /// </summary>
+        /// <remarks>It is a numeric string such that the tuple of <see cref="Username"/>,
+        /// <see cref="SessionId"/>, <see cref="NetType"/>, <see cref="AddressType"/>, and <see cref="UnicastAddress"/> forms a
+        /// globally unique identifier for the session.  The method of
+        /// <see cref="SessionId"/> allocation is up to the creating tool, but it has been
+        /// suggested that a Network Time Protocol (NTP) format timestamp be
+        /// used to ensure uniqueness</remarks>
+        /// <value>The session id.</value>
+        public string SessionId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the session version.
+        /// </summary>
+        /// <value>The session version.</value>
+        public string SessionVersion { get; set; }
+
+        /// <summary>
+        /// Gets or sets the type of the net.
+        /// </summary>
+        /// <value>The type of the net.</value>
+        public string NetType { get; set; }
+
+        /// <see cref="SessionId"/><summary>
+        /// Gets or sets the type of the address.
+        /// </summary>
+        /// <value>The type of the address.</value>
+        public string AddressType { get; set; }
+
+        /// <summary>
+        /// Gets or sets the unicast address (IP or FDQN).
+        /// </summary>
+        /// <value>The unicast address.</value>
+        public string UnicastAddress { get; set; }
+
+        public override string ToString()
+        {
+            return String.Join(" ",
+                new string[]
+                {
+                    Username,
+                    SessionId,
+                    SessionVersion.ToString(CultureInfo.InvariantCulture),
+                    NetType,
+                    AddressType,
+                    UnicastAddress,
+                }
+                );
+        }
+    }
+}