1 files changed, 150 insertions, 0 deletions
diff --git a/gstreamer-sharp/glib-sharp/Opaque.cs b/gstreamer-sharp/glib-sharp/Opaque.cs
new file mode 100644
index 0000000..4f37283
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+++ b/gstreamer-sharp/glib-sharp/Opaque.cs
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+// Opaque .cs - Opaque struct wrapper implementation
+//
+// Authors: Bob Smith <bob@thestuff.net>
+//	    Mike Kestner <mkestner@speakeasy.net>
+//	    Rachel Hestilow <hestilow@ximian.com>
+//
+// Copyright (c) 2001 Bob Smith 
+// Copyright (c) 2001 Mike Kestner
+// Copyright (c) 2002 Rachel Hestilow
+// Copyright (c) 2004 Novell, Inc.
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of version 2 of the Lesser GNU General 
+// Public License as published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this program; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
+
+
+namespace GLib {
+
+	using System;
+	using System.Collections;
+	using System.ComponentModel;
+	using System.Runtime.InteropServices;
+
+	public class Opaque : IWrapper, IDisposable {
+
+		IntPtr _obj;
+		bool owned;
+
+		[Obsolete ("Use more explicit overload.  This method always returns null")]
+		public static Opaque GetOpaque (IntPtr o)
+		{
+			return null;
+		}
+
+		public static Opaque GetOpaque (IntPtr o, Type type, bool owned)
+		{
+			if (o == IntPtr.Zero)
+				return null;
+
+			Opaque opaque = (Opaque)Activator.CreateInstance (type, new object[] { o });
+			if (owned) {
+				if (opaque.owned) {
+					// The constructor took a Ref it shouldn't have, so undo it
+					opaque.Unref (o);
+				}
+				opaque.owned = true;
+			} else 
+				opaque = opaque.Copy (o);
+
+			return opaque;
+  		}
+  
+		public Opaque ()
+		{
+			owned = true;
+		}
+
+		public Opaque (IntPtr raw)
+		{
+			owned = false;
+			Raw = raw;
+		}
+
+		protected IntPtr Raw {
+			get {
+				return _obj;
+			}
+			set {
+				if (_obj != IntPtr.Zero) {
+					Unref (_obj);
+					if (owned)
+						Free (_obj);
+				}
+				_obj = value;
+				if (_obj != IntPtr.Zero) {
+					Ref (_obj);
+				}
+			}
+		}       
+
+		~Opaque ()
+		{
+			// for compat.  All subclasses should have
+			// generated finalizers if needed now.
+		}
+
+		public virtual void Dispose ()
+		{
+			Raw = IntPtr.Zero;
+			GC.SuppressFinalize (this);
+		}
+
+		// These take an IntPtr arg so we don't get conflicts if we need
+		// to have an "[Obsolete] public void Ref ()"
+
+		protected virtual void Ref (IntPtr raw) {}
+		protected virtual void Unref (IntPtr raw) {}
+		protected virtual void Free (IntPtr raw) {}
+		protected virtual Opaque Copy (IntPtr raw) 
+		{
+			return this;
+		}
+
+		public IntPtr Handle {
+			get {
+				return _obj;
+			}
+		}
+
+		public IntPtr OwnedCopy {
+			get {
+				Opaque result = Copy (Handle);
+				result.Owned = false;
+				return result.Handle;
+			}
+		}
+
+		public bool Owned {
+			get {
+				return owned;
+			}
+			set {
+				owned = value;
+			}
+		}
+
+		public override bool Equals (object o)
+		{
+			if (!(o is Opaque))
+				return false;
+
+			return (Handle == ((Opaque) o).Handle);
+		}
+
+		public override int GetHashCode ()
+		{
+			return Handle.GetHashCode ();
+		}
+	}
+}