Switched all i/o to win32 methods and added protobuf serialization for ffprobe caching

MediaBrowser.Common/Serialization/ProtobufSerializer.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.IO;
+
+namespace MediaBrowser.Common.Serialization
+{
+    public static class ProtobufSerializer
+    {
+        public static void SerializeToStream<T>(T obj, Stream stream)
+        {
+            ProtoBuf.Serializer.Serialize<T>(stream, obj);
+        }
+
+        public static T DeserializeFromStream<T>(Stream stream)
+        {
+            return ProtoBuf.Serializer.Deserialize<T>(stream);
+        }
+
+        public static void SerializeToFile<T>(T obj, string file)
+        {
+            using (Stream stream = File.Open(file, FileMode.Create))
+            {
+                SerializeToStream<T>(obj, stream);
+            }
+        }
+
+        public static T DeserializeFromFile<T>(string file)
+        {
+            using (Stream stream = File.OpenRead(file))
+            {
+                return DeserializeFromStream<T>(stream);
+            }
+        }
+    }
+}