hawkeye camera support(not tested)

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

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Inspectron.HawkEye.RTSP.Sdp
+{
+    public class AttributFmtp : Attribut
+    {
+        public const string NAME = "fmtp";
+
+        private Dictionary<String, String> parameters = new Dictionary<string, string>();
+
+        public AttributFmtp()
+        {
+        }
+
+        public override string Key
+        {
+            get
+            {
+                return NAME;
+            }
+        }
+
+        public override string Value
+        {
+            get
+            {
+                return string.Format("{0} {1}", PayloadNumber, FormatParameter);
+            }
+            protected set
+            {
+                ParseValue(value);
+            }
+        }
+
+        public int PayloadNumber { get; set; }
+
+        // temporary aatibute to store remaning data not parsed
+        public string FormatParameter { get; set; }
+
+
+        // Extract the Payload Number and the Format Parameters
+        protected override void ParseValue(string value)
+        {
+            var parts = value.Split(new char[] { ' ' }, 2);
+
+            int payloadNumber;
+            if(int.TryParse(parts[0], out payloadNumber))
+            {
+                this.PayloadNumber = payloadNumber;
+            }
+            if(parts.Length > 1)
+            {
+                FormatParameter = parts[1];
+
+                // Split on ';' to get a list of items.
+                // Then Trim each item and then Split on the first '='
+                // Add them to the dictionary
+                parameters.Clear();
+                foreach (var pair in parts[1].Split(';').Select(x => x.Trim().Split(new char[] { '=' }, 2))) {
+                    if (!string.IsNullOrWhiteSpace(pair[0]))
+                        parameters[pair[0]] = pair.Length > 1 ? pair[1] : null;
+                }
+            }
+        }
+
+        public String GetParameter(String index)
+        {
+            if (parameters.ContainsKey(index)) return parameters[index];
+            else return "";
+        }
+
+    }
+}