Need Help to build Graph in XNA Framework

[eclere]

Hello,

i have a sample to play Videos with DirectShow in the XNA Framework. Code:

/// <summary>
/// This method sets up the DirectShow filter graph and obtains the interfaces necessary to control playback
/// for VideoTextures created from video files. This method works for .avi, .mpeg, and .wmv files.
/// </summary>
/// <param name="videoFile">The .avi, .mpeg, or .wmv video file.</param>
private void SetupGraph(string videoFile)
{
try
{
int hr;

            // 1. Start building the graph, using FilterGraph and CaptureGraphBuilder2
            IGraphBuilder graphBuilder = (IGraphBuilder)new FilterGraph();
            ICaptureGraphBuilder2 builder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
            hr = builder.SetFiltergraph(graphBuilder);
            DsError.ThrowExceptionForHR(hr);

            // 2. Add the source filter for the video file input.
            IBaseFilter sourceFilter = null;
            hr = graphBuilder.AddSourceFilter(videoFile, videoFile, out sourceFilter);
            DsError.ThrowExceptionForHR(hr);

            // 3. Get the SampleGrabber interface, configure it, and add it to the graph.
            ISampleGrabber sampGrabber = (ISampleGrabber)new SampleGrabber();
            ConfigureSampleGrabber(sampGrabber);
            hr = graphBuilder.AddFilter((IBaseFilter)sampGrabber, "SampleGrabber");
            DsError.ThrowExceptionForHR(hr);


            // 4. Add the null renderer (since we don't want to render in a seperate window.)
            IBaseFilter nullRenderer = (IBaseFilter)new NullRenderer();
            hr = graphBuilder.AddFilter(nullRenderer, "Null Renderer");
            DsError.ThrowExceptionForHR(hr);

            // 5. Render the stream.  The way the stream is rendered depends on its type.
            switch (this.vidType)
            {
                case VideoType.AVI:
                    hr = builder.RenderStream(null, null, sourceFilter, (IBaseFilter)sampGrabber, nullRenderer);
                    break;
                case VideoType.MPEG:
                    hr = builder.RenderStream(null, null, sourceFilter, (IBaseFilter)sampGrabber, nullRenderer);
                    break;
                case VideoType.WMV:
                    hr = builder.RenderStream(null, MediaType.Video, sourceFilter, (IBaseFilter)sampGrabber, nullRenderer);
                    break;
                default:
                    throw new Exception("Unsupported Video type: " + this.vidType.ToString());
            }
            DsError.ThrowExceptionForHR(hr);

            // 6. Now that everthing is configured and set up, save the width, height, stride information for use later.
            SaveSizeInfo(sampGrabber);

            // 7. Obtain the interfaces that we will use to control the execution of the filter graph.
            this.mediaControl = graphBuilder as IMediaControl;
            this.mediaEventEx = graphBuilder as IMediaEventEx;
            this.mediaSeeking = graphBuilder as IMediaSeeking;
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            throw ex;
        }
    }

Now i want enable the sound, but i dont really know what i have to do. Can anybody help?

Best Regards,
Thorsten

[eclere]

Hi Peter,

thanks. It works fine:-)

Thorsten

[Peter_B]

Try here:
https://sourceforge.net/forum/message.php?msg_id=3315692

Peter