54 lines
1.9 KiB
C#
54 lines
1.9 KiB
C#
#if DESKTOP_APP
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using System;
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using System.Runtime.InteropServices;
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namespace SharpDX.MediaFoundation
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{
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internal class CaptureEngineOnEventCallbackShadow : SharpDX.ComObjectShadow
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{
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private static readonly CaptureEngineOnEventCallbackVtbl Vtbl = new CaptureEngineOnEventCallbackVtbl();
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/// <summary>
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/// Return a pointer to the unmanaged version of this callback.
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/// </summary>
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/// <param name="callback">The callback.</param>
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/// <returns>A pointer to a shadow c++ callback</returns>
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public static IntPtr ToIntPtr(CaptureEngineOnEventCallback callback)
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{
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return ToCallbackPtr<CaptureEngineOnEventCallback>(callback);
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}
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public class CaptureEngineOnEventCallbackVtbl : ComObjectVtbl
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{
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public CaptureEngineOnEventCallbackVtbl() : base(1)
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{
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AddMethod(new OnEventCallback(OnEventImpl));
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}
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/// <unmanaged>HRESULT IMFCaptureEngineOnEventCallback::OnEvent([In] IMFMediaEvent* pEvent)</unmanaged>
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate int OnEventCallback(IntPtr thisPtr, IntPtr mediaEvent);
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private static int OnEventImpl(IntPtr thisPtr, IntPtr mediaEvent)
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{
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try
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{
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var shadow = ToShadow<MediaEngineNotifyShadow>(thisPtr);
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var callback = (CaptureEngineOnEventCallback)shadow.Callback;
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var eventRef = new MediaEvent(mediaEvent);
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callback.OnEvent(eventRef);
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}
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catch (Exception exception)
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{
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return (int)SharpDX.Result.GetResultFromException(exception);
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}
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return Result.Ok.Code;
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}
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}
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protected override CppObjectVtbl GetVtbl
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{
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get { return Vtbl; }
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}
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}
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}
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#endif |