agrobot_base/Exemplos/SharpDX-master/Source/SharpDX.MediaFoundation/MediaEngineNotifyShadow.cs

73 lines
3.1 KiB
C#

// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Runtime.InteropServices;
namespace SharpDX.MediaFoundation
{
/// <summary>
/// Internal MediaEngineNotify Callback
/// </summary>
internal class MediaEngineNotifyShadow : SharpDX.ComObjectShadow
{
private static readonly MediaEngineNotifyVtbl Vtbl = new MediaEngineNotifyVtbl();
/// <summary>
/// Return a pointer to the unmanaged version of this callback.
/// </summary>
/// <param name="callback">The callback.</param>
/// <returns>A pointer to a shadow c++ callback</returns>
public static IntPtr ToIntPtr(MediaEngineNotify callback)
{
return ToCallbackPtr<MediaEngineNotify>(callback);
}
public class MediaEngineNotifyVtbl : ComObjectVtbl
{
public MediaEngineNotifyVtbl() : base(1)
{
AddMethod(new EventNotifyDelegate(EventNotifyImpl));
}
/// <unmanaged>HRESULT IMFMediaEngineNotify::EventNotify([In] unsigned int event,[In] ULONG_PTR param1,[In] unsigned int param2)</unmanaged>
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate int EventNotifyDelegate(IntPtr thisPtr, int eventId, IntPtr param1, int param2);
private static int EventNotifyImpl(IntPtr thisPtr, int eventId, IntPtr param1, int param2)
{
try
{
var shadow = ToShadow<MediaEngineNotifyShadow>(thisPtr);
var callback = (MediaEngineNotify)shadow.Callback;
callback.OnPlaybackEvent((MediaEngineEvent)eventId, param1.ToInt64(), param2);
}
catch (Exception exception)
{
return (int)SharpDX.Result.GetResultFromException(exception);
}
return Result.Ok.Code;
}
}
protected override CppObjectVtbl GetVtbl
{
get { return Vtbl; }
}
}
}