From a6ca2de62207e99abbe4f0ef2de0c4a6485ca059 Mon Sep 17 00:00:00 2001
From: Khaled Mohammed <khaled.mohammed@gmail.com>
Date: Thu, 7 Sep 2006 22:22:09 +0000
Subject: [PATCH] gstreamer-sharp/DynamicSignal.cs: Added support for objects
 derived from GLib.Opaque

git-svn-id: svn://anonsvn.mono-project.com/source/branches/abock/gstreamer-sharp@65082 e3ebcda4-bce8-0310-ba0a-eca2169e7518
---
 gstreamer-sharp/DynamicSignal.cs                | 15 ++++++++++++---
 gstreamer-sharp/plugins-base/TypeFindElement.cs |  6 ++++--
 sample/TypeFind.cs                              |  2 +-
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/gstreamer-sharp/DynamicSignal.cs b/gstreamer-sharp/DynamicSignal.cs
index 101d869..79126f6 100644
--- a/gstreamer-sharp/DynamicSignal.cs
+++ b/gstreamer-sharp/DynamicSignal.cs
@@ -1,6 +1,6 @@
 //
 //
-// (C) 2006
+// (C) 2006 Novell Inc.
 //
 // This class implements the functionalities to bind a callback
 // function to a signal dynamically.  
@@ -116,6 +116,9 @@ namespace GLib {
 			}
 		}
 
+		[DllImport("libgobject-2.0-0.dll")]
+		static extern IntPtr g_value_peek_pointer(IntPtr ptr);
+
 		static void OnMarshal(IntPtr closure, ref GLib.Value retval, uint argc, IntPtr argsPtr, 
 			IntPtr ihint, IntPtr data) 
 		{
@@ -124,8 +127,14 @@ namespace GLib {
 
 			for(int i=1; i < argc; i++) {
 				IntPtr struct_ptr = (IntPtr)((long) argsPtr + (i * gvalue_struct_size));
-				GLib.Value argument = (GLib.Value) Marshal.PtrToStructure(struct_ptr, typeof(GLib.Value));
-				args[i - 1] = argument.Val;
+				Type detectedType = GLib.GType.LookupType(Marshal.ReadIntPtr(struct_ptr));
+				if(detectedType.IsSubclassOf(typeof(Opaque))) {
+					args[i - 1] = (Opaque) Opaque.GetOpaque(g_value_peek_pointer(struct_ptr), detectedType, false);
+				}
+				else {
+					GLib.Value argument = (GLib.Value) Marshal.PtrToStructure(struct_ptr, typeof(GLib.Value));
+					args[i - 1] = argument.Val;
+				}
 			}
 
 			if(data == IntPtr.Zero) {
diff --git a/gstreamer-sharp/plugins-base/TypeFindElement.cs b/gstreamer-sharp/plugins-base/TypeFindElement.cs
index 991833a..ca14a46 100644
--- a/gstreamer-sharp/plugins-base/TypeFindElement.cs
+++ b/gstreamer-sharp/plugins-base/TypeFindElement.cs
@@ -20,11 +20,13 @@ namespace Gst
         }
     
         public uint Probability {
-            get { return (uint)Args[1]; }
+            get { return (uint)Args[0]; }
         }
         
         public Gst.Caps Caps {
-            get { return (Gst.Caps)Args[2]; }
+            get { 
+				return (Gst.Caps)Args[1]; 
+			}
         }
     }
 
diff --git a/sample/TypeFind.cs b/sample/TypeFind.cs
index d718c54..9e6570b 100644
--- a/sample/TypeFind.cs
+++ b/sample/TypeFind.cs
@@ -35,7 +35,7 @@ public static class GstTypefindTest
     {
 		Caps caps = args.Args[1] as Caps;
 		caps.Refcount++;
-        Console.WriteLine("MimeType: {0}, {1}", caps , typefind.Caps);            
+        Console.WriteLine("MimeType: {0}", caps);            
     }
 }
 
-- 
2.7.4