// 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 IntPtr MetaDeserializeFunctionNative(IntPtr info, IntPtr buffer, byte data, UIntPtr size, byte version);

	internal class MetaDeserializeFunctionInvoker {

		MetaDeserializeFunctionNative native_cb;
		IntPtr __data;
		GLib.DestroyNotify __notify;

		~MetaDeserializeFunctionInvoker ()
		{
			if (__notify == null)
				return;
			__notify (__data);
		}

		internal MetaDeserializeFunctionInvoker (MetaDeserializeFunctionNative native_cb) : this (native_cb, IntPtr.Zero, null) {}

		internal MetaDeserializeFunctionInvoker (MetaDeserializeFunctionNative native_cb, IntPtr data) : this (native_cb, data, null) {}

		internal MetaDeserializeFunctionInvoker (MetaDeserializeFunctionNative native_cb, IntPtr data, GLib.DestroyNotify notify)
		{
			this.native_cb = native_cb;
			__data = data;
			__notify = notify;
		}

		internal Gst.MetaDeserializeFunction Handler {
			get {
				return new Gst.MetaDeserializeFunction(InvokeNative);
			}
		}

		Gst.Meta InvokeNative (Gst.MetaInfo info, Gst.Buffer buffer, byte data, ulong size, byte version)
		{
			IntPtr native_info = GLib.Marshaller.StructureToPtrAlloc (info);
			Gst.Meta __result = Gst.Meta.New (native_cb (native_info, buffer == null ? IntPtr.Zero : buffer.Handle, data, new UIntPtr (size), version));
			Marshal.FreeHGlobal (native_info);
			return __result;
		}
	}

	internal class MetaDeserializeFunctionWrapper {

		public IntPtr NativeCallback (IntPtr info, IntPtr buffer, byte data, UIntPtr size, byte version)
		{
			try {
				Gst.Meta __ret = managed (Gst.MetaInfo.New (info), buffer == IntPtr.Zero ? null : (Gst.Buffer) GLib.Opaque.GetOpaque (buffer, typeof (Gst.Buffer), false), data, (ulong) size, version);
				if (release_on_call)
					gch.Free ();
				return GLib.Marshaller.StructureToPtrAlloc (__ret);
			} catch (Exception e) {
				GLib.ExceptionManager.RaiseUnhandledException (e, true);
				// NOTREACHED: Above call does not return.
				throw e;
			}
		}

		bool release_on_call = false;
		GCHandle gch;

		public void PersistUntilCalled ()
		{
			release_on_call = true;
			gch = GCHandle.Alloc (this);
		}

		internal MetaDeserializeFunctionNative NativeDelegate;
		Gst.MetaDeserializeFunction managed;

		public MetaDeserializeFunctionWrapper (Gst.MetaDeserializeFunction managed)
		{
			this.managed = managed;
			if (managed != null)
				NativeDelegate = new MetaDeserializeFunctionNative (NativeCallback);
		}

		public static Gst.MetaDeserializeFunction GetManagedDelegate (MetaDeserializeFunctionNative native)
		{
			if (native == null)
				return null;
			MetaDeserializeFunctionWrapper wrapper = (MetaDeserializeFunctionWrapper) native.Target;
			if (wrapper == null)
				return null;
			return wrapper.managed;
		}
	}
#endregion
}