C# Device.Dispose方法代碼示例

    public static void Main(string[] args)
    {
        Device device;
        Effect effect;

        device = new Device(DriverType.Hardware, DeviceCreationFlags.None);

        if (args.Length < 1)
        {
            Console.WriteLine("Usage: dumptech.exe <effect file>");
            return;
        }

        string effect_file = args[0];

        if (! File.Exists(effect_file))
        {
            Console.WriteLine("File not found: " + effect_file);
            return;
        }
        try
        {
            var shader_bytecode = ShaderBytecode.FromFile(effect_file);
            effect = new Effect(device, shader_bytecode);
        }
        catch (SharpDX.CompilationException e)
        {
            Console.WriteLine(e.Message + ": " + effect_file);
            return;
        }

        //Console.WriteLine("technique count {0}", effect.Description.TechniqueCount);
        for (int i = 0; i < effect.Description.TechniqueCount; i++)
        {
            var technique = effect.GetTechniqueByIndex(i);
            Console.WriteLine("{0}\t{1}", i, technique.Description.Name);
        }

        if (effect != null)
            effect.Dispose();
        if (device != null)
            device.Dispose();
    }

        public static Bitmap CaptureScreen()
        {
            // # of graphics card adapter
            const int numAdapter = 0;

            // # of output device (i.e. monitor)
            const int numOutput = 1;

            // Create DXGI Factory1
            var factory = new Factory1();
            var adapter = factory.GetAdapter1(numAdapter);

            // Create device from Adapter
            var device = new Device(adapter);

            // Get DXGI.Output
            var output = adapter.GetOutput(numOutput);
            var output1 = output.QueryInterface<Output1>();

            // Width/Height of desktop to capture
            int width = ((Rectangle)output.Description.DesktopBounds).Width;
            //width = 1024;
            int height = ((Rectangle)output.Description.DesktopBounds).Height;
            //height = 1024;

            // Create Staging texture CPU-accessible
            var textureDesc = new Texture2DDescription
            {
                CpuAccessFlags = CpuAccessFlags.Read,
                BindFlags = BindFlags.None,
                Format = Format.B8G8R8A8_UNorm,
                Width = width,
                Height = height,
                OptionFlags = ResourceOptionFlags.None,
                MipLevels = 1,
                ArraySize = 1,
                SampleDescription = { Count = 1, Quality = 0 },
                Usage = ResourceUsage.Staging
            };
            var screenTexture = new Texture2D(device, textureDesc);

            // Duplicate the output
            var duplicatedOutput = output1.DuplicateOutput(device);

            bool captureDone = false;
            Bitmap bitmap = null;

            for (int i = 0; !captureDone; i++)
            {
                try
                {
                    SharpDX.DXGI.Resource screenResource;
                    OutputDuplicateFrameInformation duplicateFrameInformation;

                    // Try to get duplicated frame within given time
                    duplicatedOutput.AcquireNextFrame(10000, out duplicateFrameInformation, out screenResource);

                    if (i > 0)
                    {
                        // copy resource into memory that can be accessed by the CPU
                        using (var screenTexture2D = screenResource.QueryInterface<Texture2D>())
                            device.ImmediateContext.CopyResource(screenTexture2D, screenTexture);

                        // Get the desktop capture texture
                        var mapSource = device.ImmediateContext.MapSubresource(screenTexture, 0, MapMode.Read, MapFlags.None);

                        // Create Drawing.Bitmap
                        bitmap = new System.Drawing.Bitmap(width, height, PixelFormat.Format32bppArgb);
                        var boundsRect = new System.Drawing.Rectangle(0, 0, width, height);

                        // Copy pixels from screen capture Texture to GDI bitmap
                        var mapDest = bitmap.LockBits(boundsRect, ImageLockMode.WriteOnly, bitmap.PixelFormat);
                        var sourcePtr = mapSource.DataPointer;
                        var destPtr = mapDest.Scan0;
                        for (int y = 0; y < height; y++)
                        {
                            // Copy a single line 
                            Utilities.CopyMemory(destPtr, sourcePtr, width * 4);

                            // Advance pointers
                            sourcePtr = IntPtr.Add(sourcePtr, mapSource.RowPitch);
                            destPtr = IntPtr.Add(destPtr, mapDest.Stride);
                        }

                        // Release source and dest locks
                        bitmap.UnlockBits(mapDest);
                        device.ImmediateContext.UnmapSubresource(screenTexture, 0);

                        // Capture done
                        captureDone = true;
                    }

                    screenResource.Dispose();
                    duplicatedOutput.ReleaseFrame();

                }
                catch (SharpDXException e)
                {
                    if (e.ResultCode.Code != SharpDX.DXGI.ResultCode.WaitTimeout.Result.Code)
                    {
//.........這裏部分代碼省略.........

        /// <summary>
        /// Tests to see if the adapter supports the requested profile.
        /// </summary>
        /// <param name="featureLevel">The graphics profile.</param>
        /// <returns>true if the profile is supported</returns>
        public bool IsProfileSupported(FeatureLevel featureLevel)
        {
            // Only way is to instantiate a Direct3D11 device and check the selected
            // feature level
            bool isProfileSupported = false;

            Direct3D11.Device device = null;
            try
            {
                device = new SharpDX.Direct3D11.Device(adapter, DeviceCreationFlags.None, featureLevel);
                isProfileSupported = featureLevel == device.FeatureLevel;
            }
            catch (SharpDXException) { }
            finally
            {
                if (device != null)
                    device.Dispose();
            }
            return isProfileSupported;
        }

//.........這裏部分代碼省略.........

                if(supportedDevice)
                {
                    bool outputsAttached = adapter.Outputs.Length > 0;

                    if (outputsAttached)
                    {
                        for (int j = 0; j < adapter.Outputs.Length; j++)
                        {
                            var output = adapter.Outputs[j];

                            info.Name = String.Format("{0} + {1}", adapter.Description.Description, output.Description.DeviceName);
                            info.OutputName = output.Description.DeviceName;
                            info.OutputId = j;

                            var displayModeList = output.GetDisplayModeList(MyRender11Constants.BACKBUFFER_FORMAT, DisplayModeEnumerationFlags.Interlaced);
                            var adapterDisplayModes = new MyDisplayMode[displayModeList.Length];
                            for (int k = 0; k < displayModeList.Length; k++)
                            {
                                var displayMode = displayModeList[k];

                                adapterDisplayModes[k] = new MyDisplayMode
                                {
                                    Height = displayMode.Height,
                                    Width = displayMode.Width,
                                    RefreshRate = displayMode.RefreshRate.Numerator,
                                    RefreshRateDenominator = displayMode.RefreshRate.Denominator
                                };
                            }
                            Array.Sort(adapterDisplayModes, m_refreshRatePriorityComparer);

                            info.SupportedDisplayModes = adapterDisplayModes;
                            info.CurrentDisplayMode = adapterDisplayModes[adapterDisplayModes.Length - 1];
                            LogOutputDisplayModes(ref info);

                            m_adapterModes[adapterIndex] = displayModeList;

                            // add one entry per every adapter-output pair
                            adaptersList.Add(info);
                            adapterIndex++;
                        }
                    }
                    else
                    {
                        // FALLBACK MODES

                        MyDisplayMode[] fallbackDisplayModes = new MyDisplayMode[] {
                            new MyDisplayMode(640, 480, 60000, 1000),
                            new MyDisplayMode(720, 576, 60000, 1000),
                            new MyDisplayMode(800, 600, 60000, 1000),
                            new MyDisplayMode(1024, 768, 60000, 1000),
                            new MyDisplayMode(1152, 864, 60000, 1000),
                            new MyDisplayMode(1280, 720, 60000, 1000),
                            new MyDisplayMode(1280, 768, 60000, 1000),
                            new MyDisplayMode(1280, 800, 60000, 1000),
                            new MyDisplayMode(1280, 960, 60000, 1000),
                            new MyDisplayMode(1280, 1024, 60000, 1000),
                            new MyDisplayMode(1360, 768, 60000, 1000),
                            new MyDisplayMode(1360, 1024, 60000, 1000),
                            new MyDisplayMode(1440, 900, 60000, 1000),
                            new MyDisplayMode(1600, 900, 60000, 1000),
                            new MyDisplayMode(1600, 1024, 60000, 1000),
                            new MyDisplayMode(1600, 1200, 60000, 1000),
                            new MyDisplayMode(1680, 1200, 60000, 1000),
                            new MyDisplayMode(1680, 1050, 60000, 1000),
                            new MyDisplayMode(1920, 1080, 60000, 1000),
                            new MyDisplayMode(1920, 1200, 60000, 1000),
                        };

                        info.OutputName = "FallbackOutput";
                        info.Name = String.Format("{0}", adapter.Description.Description);
                        info.OutputId = 0;
                        info.CurrentDisplayMode = fallbackDisplayModes[fallbackDisplayModes.Length - 1];

                        info.SupportedDisplayModes = fallbackDisplayModes;
                        info.FallbackDisplayModes = true;

                        // add one entry for adapter-fallback output pair
                        adaptersList.Add(info);
                        adapterIndex++;
                    }
                }
                else
                {
                    info.SupportedDisplayModes = new MyDisplayMode[0];
                }

                MyRender11.Log.WriteLine("Fallback display modes = " + info.FallbackDisplayModes);

                LogAdapterInfoEnd();

                if(adapterTestDevice != null)
                {
                    adapterTestDevice.Dispose();
                    adapterTestDevice = null;
                }
            }

            return adaptersList.ToArray();
        }

//.........這裏部分代碼省略.........
                    DeviceName = adapter.Description.Description,
                    Description = deviceDesc,
                    IsSupported = supportedDevice,
                    AdapterDeviceId = i,

                    Has512MBRam = vram > 500000000,
                    HDRSupported = true,
                    MaxTextureSize = SharpDX.Direct3D11.Texture2D.MaximumTexture2DSize,

                    VRAM = vram,
                    MultithreadedRenderingSupported = supportsCommandLists
                };

                if(vram >= 2000000000)
                {
                    info.MaxTextureQualitySupported = MyTextureQuality.HIGH;
                }
                else if (vram >= 1000000000)
                {
                    info.MaxTextureQualitySupported = MyTextureQuality.MEDIUM;
                }
                else
                { 
                    info.MaxTextureQualitySupported = MyTextureQuality.LOW;
                }

                info.MaxAntialiasingModeSupported = MyAntialiasingMode.FXAA;
                if (supportedDevice)
                {
                    if (adapterTestDevice.CheckMultisampleQualityLevels(Format.R11G11B10_Float, 2) > 0)
                    {
                        info.MaxAntialiasingModeSupported = MyAntialiasingMode.MSAA_2;
                    }
                    if (adapterTestDevice.CheckMultisampleQualityLevels(Format.R11G11B10_Float, 4) > 0)
                    {
                        info.MaxAntialiasingModeSupported = MyAntialiasingMode.MSAA_4;
                    }
                    if (adapterTestDevice.CheckMultisampleQualityLevels(Format.R11G11B10_Float, 8) > 0)
                    {
                        info.MaxAntialiasingModeSupported = MyAntialiasingMode.MSAA_8;
                    }
                }

                LogAdapterInfoBegin(ref info);

                if(supportedDevice)
                {
                    for(int j=0; j<factory.Adapters[i].Outputs.Length; j++)
                    {
                        var output = factory.Adapters[i].Outputs[j];

                        info.Name = String.Format("{0} + {1}", adapter.Description.Description, output.Description.DeviceName);
                        info.OutputName = output.Description.DeviceName;
                        info.OutputId = j;

                        var displayModeList = factory.Adapters[i].Outputs[j].GetDisplayModeList(MyRender11Constants.BACKBUFFER_FORMAT, DisplayModeEnumerationFlags.Interlaced);
                        var adapterDisplayModes = new MyDisplayMode[displayModeList.Length];
                        for (int k = 0; k < displayModeList.Length; k++)
                        {
                            var displayMode = displayModeList[k];

                            adapterDisplayModes[k] = new MyDisplayMode 
                            { 
                                Height = displayMode.Height, 
                                Width = displayMode.Width, 
                                RefreshRate = displayMode.RefreshRate.Numerator, 
                                RefreshRateDenominator = displayMode.RefreshRate.Denominator 
                            }; 
                        }
                        Array.Sort(adapterDisplayModes, m_refreshRatePriorityComparer);

                        info.SupportedDisplayModes = adapterDisplayModes;
                        info.CurrentDisplayMode = adapterDisplayModes[adapterDisplayModes.Length - 1];


                        adaptersList.Add(info);
                        m_adapterModes[adapterIndex] = displayModeList;
                        adapterIndex++;

                        LogOutputDisplayModes(ref info);
                    }
                }
                else
                {
                    info.SupportedDisplayModes = new MyDisplayMode[0];
                    adaptersList.Add(info);
                    adapterIndex++;
                }

                LogAdapterInfoEnd();

                if(adapterTestDevice != null)
                {
                    adapterTestDevice.Dispose();
                    adapterTestDevice = null;
                }
            }

            return adaptersList.ToArray();
        }

//.........這裏部分代碼省略.........
            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // EFFECT SETUP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // Effect 1 : BitmapSource - take decoded image data and get a BitmapSource from it
            var bitmapSourceEffect = new d2.Effects.BitmapSource(d2dContext);
            bitmapSourceEffect.WicBitmapSource = formatConverter;

            // Effect 2 : GaussianBlur - give the bitmapsource a gaussian blurred effect
            var gaussianBlurEffect = new d2.Effects.GaussianBlur(d2dContext);
            gaussianBlurEffect.SetInput(0, bitmapSourceEffect.Output, true);
            gaussianBlurEffect.StandardDeviation = 5f;

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // OVERLAY TEXT SETUP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            var textFormat = new dw.TextFormat(dwFactory, "Arial", 15f); // create the text format of specified font configuration

            // draw a long text to show the automatic line wrapping
            var textToDraw = "Some long text to show the drawing of preformatted "
                             + "glyphs using DirectWrite on the Direct2D surface."
                             + " Notice the automatic wrapping of line if it exceeds desired width.";

            // create the text layout - this improves the drawing performance for static text
            // as the glyph positions are precalculated
            var textLayout = new dw.TextLayout(dwFactory, textToDraw, textFormat, 300f, 1000f);

            var textBrush = new d2.SolidColorBrush(d2dContext, Color.LightGreen);

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // RENDER TARGET SETUP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // create the d2d bitmap description using default flags (from SharpDX samples) and 96 DPI
            var d2dBitmapProps = new d2.BitmapProperties1(d2PixelFormat, 96, 96, d2.BitmapOptions.Target | d2.BitmapOptions.CannotDraw);

            // the render target
            var d2dRenderTarget = new d2.Bitmap1(d2dContext, new Size2(pixelWidth, pixelHeight), d2dBitmapProps);
            d2dContext.Target = d2dRenderTarget; // associate bitmap with the d2d context

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // DRAWING ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // slow preparations - fast drawing:
            d2dContext.BeginDraw();
            d2dContext.DrawImage(gaussianBlurEffect);
            d2dContext.DrawTextLayout(new Vector2(5f, 5f), textLayout, textBrush);
            d2dContext.EndDraw();

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // IMAGE SAVING ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // delete the output file if it already exists
            if (System.IO.File.Exists(outputPath)) System.IO.File.Delete(outputPath);

            // use the appropiate overload to write either to stream or to a file
            var stream = new wic.WICStream(imagingFactory, outputPath, NativeFileAccess.Write);

            // select the image encoding format HERE
            var encoder = new wic.PngBitmapEncoder(imagingFactory);
            encoder.Initialize(stream);

            var bitmapFrameEncode = new wic.BitmapFrameEncode(encoder);
            bitmapFrameEncode.Initialize();
            bitmapFrameEncode.SetSize(pixelWidth, pixelHeight);
            bitmapFrameEncode.SetPixelFormat(ref wicPixelFormat);

            // this is the trick to write D2D1 bitmap to WIC
            var imageEncoder = new wic.ImageEncoder(imagingFactory, d2dDevice);
            imageEncoder.WriteFrame(d2dRenderTarget, bitmapFrameEncode, new wic.ImageParameters(d2PixelFormat, 96, 96, 0, 0, pixelWidth, pixelHeight));

            bitmapFrameEncode.Commit();
            encoder.Commit();

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // CLEANUP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // dispose everything and free used resources

            bitmapFrameEncode.Dispose();
            encoder.Dispose();
            stream.Dispose();
            textBrush.Dispose();
            textLayout.Dispose();
            textFormat.Dispose();
            formatConverter.Dispose();
            gaussianBlurEffect.Dispose();
            bitmapSourceEffect.Dispose();
            d2dRenderTarget.Dispose();
            inputStream.Dispose();
            decoder.Dispose();
            d2dContext.Dispose();
            dwFactory.Dispose();
            imagingFactory.Dispose();
            d2dDevice.Dispose();
            dxgiDevice.Dispose();
            d3dDevice.Dispose();
            defaultDevice.Dispose();

            // show the result
            System.Diagnostics.Process.Start(outputPath);
        }

        public static MemoryStream Resize(System.IO.Stream source, int maxwidth, int maxheight, Action beforeDrawImage, Action afterDrawImage)
        {
            // initialize the D3D device which will allow to render to image any graphics - 3D or 2D
            var defaultDevice = new SharpDX.Direct3D11.Device(SharpDX.Direct3D.DriverType.Warp,
                                                              d3d.DeviceCreationFlags.BgraSupport | d3d.DeviceCreationFlags.SingleThreaded | d3d.DeviceCreationFlags.PreventThreadingOptimizations);

            var d3dDevice = defaultDevice.QueryInterface<d3d.Device1>(); // get a reference to the Direct3D 11.1 device
            var dxgiDevice = d3dDevice.QueryInterface<dxgi.Device>(); // get a reference to DXGI device

            var d2dDevice = new d2.Device(dxgiDevice); // initialize the D2D device

            var imagingFactory = new wic.ImagingFactory2(); // initialize the WIC factory

            // initialize the DeviceContext - it will be the D2D render target and will allow all rendering operations
            var d2dContext = new d2.DeviceContext(d2dDevice, d2.DeviceContextOptions.None);

            var dwFactory = new dw.Factory();

            // specify a pixel format that is supported by both D2D and WIC
            var d2PixelFormat = new d2.PixelFormat(dxgi.Format.R8G8B8A8_UNorm, d2.AlphaMode.Premultiplied);
            // if in D2D was specified an R-G-B-A format - use the same for wic
            var wicPixelFormat = wic.PixelFormat.Format32bppPRGBA;

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // IMAGE LOADING ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            var decoder = new wic.BitmapDecoder(imagingFactory,source, wic.DecodeOptions.CacheOnLoad);

            // decode the loaded image to a format that can be consumed by D2D
            var formatConverter = new wic.FormatConverter(imagingFactory);
            formatConverter.Initialize(decoder.GetFrame(0), wicPixelFormat);

            // store the image size - output will be of the same size
            var inputImageSize = formatConverter.Size;

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // RENDER TARGET SETUP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // create the d2d bitmap description using default flags (from SharpDX samples) and 96 DPI
            var d2dBitmapProps = new d2.BitmapProperties1(d2PixelFormat, 96, 96, d2.BitmapOptions.Target | d2.BitmapOptions.CannotDraw);

            //Calculate size
            var resultSize = MathUtil.ScaleWithin(inputImageSize.Width,inputImageSize.Height,maxwidth,maxheight);
            var newWidth = resultSize.Item1;
            var newHeight = resultSize.Item2;

            // the render target
            var d2dRenderTarget = new d2.Bitmap1(d2dContext, new Size2(newWidth, newHeight), d2dBitmapProps);
            d2dContext.Target = d2dRenderTarget; // associate bitmap with the d2d context

            var bitmapSourceEffect = new d2.Effects.BitmapSourceEffect(d2dContext);
            bitmapSourceEffect.WicBitmapSource = formatConverter;

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // DRAWING ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            beforeDrawImage();
            // slow preparations - fast drawing:
            d2dContext.BeginDraw();
            d2dContext.Transform = Matrix3x2.Scaling(new Vector2((float)(newWidth / (float)inputImageSize.Width), (float)(newHeight / (float)inputImageSize.Height)));
            d2dContext.DrawImage(bitmapSourceEffect, d2.InterpolationMode.HighQualityCubic);
            d2dContext.EndDraw();
            afterDrawImage();

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // IMAGE SAVING ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            var ms = new MemoryStream();

            // use the appropiate overload to write either to stream or to a file
            var stream = new wic.WICStream(imagingFactory,ms);

            // select the image encoding format HERE
            var encoder = new wic.JpegBitmapEncoder(imagingFactory);
            encoder.Initialize(stream);

            var bitmapFrameEncode = new wic.BitmapFrameEncode(encoder);
            bitmapFrameEncode.Initialize();
            bitmapFrameEncode.SetSize(newWidth, newHeight);
            bitmapFrameEncode.SetPixelFormat(ref wicPixelFormat);

            // this is the trick to write D2D1 bitmap to WIC
            var imageEncoder = new wic.ImageEncoder(imagingFactory, d2dDevice);
            imageEncoder.WriteFrame(d2dRenderTarget, bitmapFrameEncode, new wic.ImageParameters(d2PixelFormat, 96, 96,  0, 0, newWidth, newHeight));

            bitmapFrameEncode.Commit();
            encoder.Commit();

            // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            // CLEANUP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            // dispose everything and free used resources

            bitmapFrameEncode.Dispose();
            encoder.Dispose();
            stream.Dispose();
            formatConverter.Dispose();
            bitmapSourceEffect.Dispose();
            d2dRenderTarget.Dispose();
            decoder.Dispose();
            d2dContext.Dispose();
            dwFactory.Dispose();
//.........這裏部分代碼省略.........

        static void Main(string[] args)
        {
            // Select a File to play
            var openFileDialog = new OpenFileDialog { Title = "Select a file", Filter = "Media Files(*.WMV;*.MP4;*.AVI)|*.WMV;*.MP4;*.AVI" };
            var result = openFileDialog.ShowDialog();
            if (result == DialogResult.Cancel)
            {
                return;
            }

            // Initialize MediaFoundation
            MediaManager.Startup();

            var renderForm = new SharpDX.Windows.RenderForm();

            device = CreateDeviceForVideo(out dxgiManager);

            // Creates the MediaEngineClassFactory
            var mediaEngineFactory = new MediaEngineClassFactory();
            
            //Assign our dxgi manager, and set format to bgra
            MediaEngineAttributes attr = new MediaEngineAttributes();
            attr.VideoOutputFormat = (int)SharpDX.DXGI.Format.B8G8R8A8_UNorm;
            attr.DxgiManager = dxgiManager;

            // Creates MediaEngine for AudioOnly 
            var mediaEngine = new MediaEngine(mediaEngineFactory, attr, MediaEngineCreateFlags.None);

            // Register our PlayBackEvent
            mediaEngine.PlaybackEvent += OnPlaybackCallback;

            // Query for MediaEngineEx interface
            mediaEngineEx = mediaEngine.QueryInterface<MediaEngineEx>();

            // Opens the file
            var fileStream = openFileDialog.OpenFile();
            
            // Create a ByteStream object from it
            var stream = new ByteStream(fileStream);

            // Creates an URL to the file
            var url = new Uri(openFileDialog.FileName, UriKind.RelativeOrAbsolute);

            // Set the source stream
            mediaEngineEx.SetSourceFromByteStream(stream, url.AbsoluteUri);

            // Wait for MediaEngine to be ready
            if (!eventReadyToPlay.WaitOne(1000))
            {
                Console.WriteLine("Unexpected error: Unable to play this file");
            }

            //Create our swapchain
            swapChain = CreateSwapChain(device, renderForm.Handle);

            //Get DXGI surface to be used by our media engine
            var texture = Texture2D.FromSwapChain<Texture2D>(swapChain, 0);
            var surface = texture.QueryInterface<SharpDX.DXGI.Surface>();

            //Get our video size
            int w, h;
            mediaEngine.GetNativeVideoSize(out w, out h);

            // Play the music
            mediaEngineEx.Play();

            long ts;

            RenderLoop.Run(renderForm, () =>
            {
                //Transfer frame if a new one is available
                if (mediaEngine.OnVideoStreamTick(out ts))
                {
                    mediaEngine.TransferVideoFrame(surface, null, new SharpDX.Rectangle(0, 0, w, h), null);
                }

                swapChain.Present(1, SharpDX.DXGI.PresentFlags.None);
            });

            mediaEngine.Shutdown();
            swapChain.Dispose();
            device.Dispose();
        }