freeswitch/src/dotnet/Marshaling/BufferMarshaler.cs

/* 
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2006, James Martelletti <james@nerdc0re.com>
 *
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 *
 * The Initial Developer of the Original Code is
 * James Martelletti <james@nerdc0re.com>
 * Portions created by the Initial Developer are Copyright (C)
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * 
 * James Martelletti <james@nerdc0re.com>
 *
 *
 * BufferMarshaler.cs -- 
 *
 */
using System;
using System.Runtime.InteropServices;
using FreeSwitch.Marshaling.Types;
using FreeSwitch.Types;

namespace FreeSwitch.Marshaling
{
    class BufferMarshaler : ICustomMarshaler
    {
        private static BufferMarshaler Instance = new BufferMarshaler();

        public static ICustomMarshaler GetInstance(string s)
        {
            return Instance;
        }

        public void CleanUpManagedData(object o)
        {
        }

        public void CleanUpNativeData(IntPtr pNativeData)
        {
        }

        public int GetNativeDataSize()
        {
            return IntPtr.Size;
        }

        public IntPtr MarshalManagedToNative(object obj)
        {
            FreeSwitch.Types.Buffer buffer = (FreeSwitch.Types.Buffer)obj;

            return buffer.marshaledObject.Handle;
        }

        public object MarshalNativeToManaged(IntPtr bufferPtr)
        {
            FreeSwitch.Types.Buffer buffer        = new FreeSwitch.Types.Buffer();
            BufferMarshal           bufferMarshal = new BufferMarshal();

            Marshal.PtrToStructure(bufferPtr, bufferMarshal);

            buffer.marshaledObject = new HandleRef(bufferMarshal, bufferPtr);

            return buffer;
        }
    }
}