Update

subprojects/gstreamer-sharp/sources/generated/Gst/GstSharp.MetaFreeFunctionNative.cs

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+// This file was generated by the Gtk# code generator.
+// Any changes made will be lost if regenerated.
+
+namespace GstSharp {
+
+	using System;
+	using System.Runtime.InteropServices;
+
+#region Autogenerated code
+	[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
+	internal delegate void MetaFreeFunctionNative(IntPtr meta, IntPtr buffer);
+
+	internal class MetaFreeFunctionInvoker {
+
+		MetaFreeFunctionNative native_cb;
+		IntPtr __data;
+		GLib.DestroyNotify __notify;
+
+		~MetaFreeFunctionInvoker ()
+		{
+			if (__notify == null)
+				return;
+			__notify (__data);
+		}
+
+		internal MetaFreeFunctionInvoker (MetaFreeFunctionNative native_cb) : this (native_cb, IntPtr.Zero, null) {}
+
+		internal MetaFreeFunctionInvoker (MetaFreeFunctionNative native_cb, IntPtr data) : this (native_cb, data, null) {}
+
+		internal MetaFreeFunctionInvoker (MetaFreeFunctionNative native_cb, IntPtr data, GLib.DestroyNotify notify)
+		{
+			this.native_cb = native_cb;
+			__data = data;
+			__notify = notify;
+		}
+
+		internal Gst.MetaFreeFunction Handler {
+			get {
+				return new Gst.MetaFreeFunction(InvokeNative);
+			}
+		}
+
+		void InvokeNative (Gst.Meta meta, Gst.Buffer buffer)
+		{
+			IntPtr native_meta = GLib.Marshaller.StructureToPtrAlloc (meta);
+			native_cb (native_meta, buffer == null ? IntPtr.Zero : buffer.Handle);
+			Marshal.FreeHGlobal (native_meta);
+		}
+	}
+
+	internal class MetaFreeFunctionWrapper {
+
+		public void NativeCallback (IntPtr meta, IntPtr buffer)
+		{
+			try {
+				managed (Gst.Meta.New (meta), buffer == IntPtr.Zero ? null : (Gst.Buffer) GLib.Opaque.GetOpaque (buffer, typeof (Gst.Buffer), false));
+				if (release_on_call)
+					gch.Free ();
+			} catch (Exception e) {
+				GLib.ExceptionManager.RaiseUnhandledException (e, false);
+			}
+		}
+
+		bool release_on_call = false;
+		GCHandle gch;
+
+		public void PersistUntilCalled ()
+		{
+			release_on_call = true;
+			gch = GCHandle.Alloc (this);
+		}
+
+		internal MetaFreeFunctionNative NativeDelegate;
+		Gst.MetaFreeFunction managed;
+
+		public MetaFreeFunctionWrapper (Gst.MetaFreeFunction managed)
+		{
+			this.managed = managed;
+			if (managed != null)
+				NativeDelegate = new MetaFreeFunctionNative (NativeCallback);
+		}
+
+		public static Gst.MetaFreeFunction GetManagedDelegate (MetaFreeFunctionNative native)
+		{
+			if (native == null)
+				return null;
+			MetaFreeFunctionWrapper wrapper = (MetaFreeFunctionWrapper) native.Target;
+			if (wrapper == null)
+				return null;
+			return wrapper.managed;
+		}
+	}
+#endregion
+}