C# DsROTEntry类代码示例

 /// <summary>
 /// Builds the graph.
 /// </summary>
 public override void BuildGraph()
 {
   try
   {
     if (_graphState != GraphState.Idle)
     {
       Log.Log.Error("dvbt:Graph already built");
       throw new TvException("Graph already build");
     }
     Log.Log.WriteFile("dvbt:BuildGraph");
     _graphBuilder = (IFilterGraph2)new FilterGraph();
     _capBuilder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
     _capBuilder.SetFiltergraph(_graphBuilder);
     _rotEntry = new DsROTEntry(_graphBuilder);
     AddNetworkProviderFilter(typeof (DVBTNetworkProvider).GUID);
     AddTsWriterFilterToGraph();
     if (!useInternalNetworkProvider)
     {
       CreateTuningSpace();
       AddMpeg2DemuxerToGraph();
     }
     AddAndConnectBDABoardFilters(_device);
     string graphName = _device.Name + " - DVBT Graph.grf";
     FilterGraphTools.SaveGraphFile(_graphBuilder, graphName);
     GetTunerSignalStatistics();
     _graphState = GraphState.Created;
   }
   catch (Exception ex)
   {
     Log.Log.Write(ex);
     Dispose();
     _graphState = GraphState.Idle;
     throw new TvExceptionGraphBuildingFailed("Graph building failed", ex);
   }
 }

        /// <summary>
        /// This constructor internally build a DirectShow graph using the given file name parameter.
        /// </summary>
        /// <param name="filename">A media file.</param>
        /// <remarks>This constructor use the BlackListManager class to bane the use of the ffdshow Audio and Video decoders during the Intelligent Connect graph building.</remarks>
        public SimplePlayer(string filename)
        {
            if (string.IsNullOrEmpty(filename))
            throw new ArgumentNullException("filename");

              if (!File.Exists(filename))
            throw new FileNotFoundException();

              this.graphBuilder = (IFilterGraph2)new FilterGraph();

            #if DEBUG
              this.rot = new DsROTEntry(this.graphBuilder);
            #endif

              this.blackListManager = new BlackListManager(this.graphBuilder);

              // blacklist the ffdshow Audio Decoder filter
              this.blackListManager.AddBlackListedFilter(new Guid("0F40E1E5-4F79-4988-B1A9-CC98794E6B55"));
              // blacklist the ffdshow Video Decoder filter
              this.blackListManager.AddBlackListedFilter(new Guid("04FE9017-F873-410E-871E-AB91661A4EF7"));

              int hr = this.graphBuilder.RenderFile(filename, null);
              DsError.ThrowExceptionForHR(hr);

              this.mediaControl = (IMediaControl)this.graphBuilder;
              this.mediaEvent = (IMediaEvent)this.graphBuilder;
        }

        private void BuildGraph(string filename)
        {
            int hr = 0;

              try
              {
            graphBuilder = (IFilterGraph2)new FilterGraph();
            mediaControl = (IMediaControl)graphBuilder;

            rot = new DsROTEntry(graphBuilder);

            vmr9 = (IBaseFilter)new VideoMixingRenderer9();

            ConfigureVMR9InWindowlessMode();

            hr = graphBuilder.AddFilter(vmr9, "Video Mixing Renderer 9");
            DsError.ThrowExceptionForHR(hr);

            hr = graphBuilder.RenderFile(filename, null);
            DsError.ThrowExceptionForHR(hr);

            RunGraph();
              }
              catch (Exception e)
              {
            CloseInterfaces();
            MessageBox.Show("An error occured during the graph building : \r\n\r\n" + e.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
              }
        }

        //public override void BuildGraphWithNoRenderer()
        //{
        //    this.graphBuilder = (IFilterGraph2)new FilterGraph();
        //    rot = new DsROTEntry(this.graphBuilder);
        //    OnGraphStarted();
        //}
        public override void BuildGraph()
        {
            this.graphBuilder = (IFilterGraph2)new FilterGraph();
            rot = new DsROTEntry(this.graphBuilder);

            AddRenderers();
            ConfigureVMR9InWindowlessMode();

            this.hostingControl.CurrentGraphBuilder = this;

            OnGraphStarted();
        }

        public void BuildGraph(ITuningSpace tuningSpace)
        {
            this.graphBuilder = (IFilterGraph2) new FilterGraph();
              rot = new DsROTEntry(this.graphBuilder);

              // Method names should be self explanatory
              AddNetworkProviderFilter(tuningSpace);
              AddMPEG2DemuxFilter();
              AddAndConnectBDABoardFilters();
              AddTransportStreamFiltersToGraph();
              AddRenderers();
              ConfigureVMR9InWindowlessMode();
              ConnectFilters();
        }

    /// <summary>
    /// Build graph
    /// </summary>
    public override void BuildGraph()
    {
      try
      {
        if (_graphState != GraphState.Idle)
        {
          throw new TvException("Graph already build");
        }
        Log.Log.WriteFile("BuildGraph");

        _graphBuilder = (IFilterGraph2)new FilterGraph();

        _capBuilder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
        _capBuilder.SetFiltergraph(_graphBuilder);
        _rotEntry = new DsROTEntry(_graphBuilder);

        _infTeeMain = (IBaseFilter)new InfTee();
        int hr = _graphBuilder.AddFilter(_infTeeMain, "Inf Tee");
        if (hr != 0)
        {
          Log.Log.Error("dvbip:Add main InfTee returns:0x{0:X}", hr);
          throw new TvException("Unable to add  mainInfTee");
        }

        AddTsWriterFilterToGraph();
        AddStreamSourceFilter(_defaultUrl);
        IBaseFilter lastFilter = _filterStreamSource;
        AddMdPlugs(ref lastFilter);
        if (!ConnectTsWriter(lastFilter))
        {
          throw new TvExceptionGraphBuildingFailed("Graph building failed");
        }

        _conditionalAccess = new ConditionalAccess(_filterStreamSource, _filterTsWriter, null, this);
        _graphState = GraphState.Created;
      }
      catch (Exception ex)
      {
        Log.Log.Write(ex);
        Dispose();
        _graphState = GraphState.Idle;
        throw ex;
      }
    }

 /// <summary>
 /// Build the graph.
 /// </summary>
 public override void BuildGraph()
 {
   try
   {
     if (_graphState != GraphState.Idle)
     {
       Log.Log.Info("PBDA CC: device already initialised");
       return;
     }
     Log.Log.Info("PBDA CC: build graph");
     _graphBuilder = (IFilterGraph2)new FilterGraph();
     _capBuilder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
     _capBuilder.SetFiltergraph(_graphBuilder);
     _rotEntry = new DsROTEntry(_graphBuilder);
     AddNetworkProviderFilter(typeof (ATSCNetworkProvider).GUID);
     AddTsWriterFilterToGraph();
     if (!useInternalNetworkProvider)
     {
       AddMpeg2DemuxerToGraph();
     }
     IBaseFilter lastFilter;
     AddAndConnectBDABoardFilters(_device, out lastFilter);
     _bdaCa = _filterTuner as IBDA_ConditionalAccess;
     if (_bdaCa == null)
     {
       throw new TvExceptionGraphBuildingFailed("PBDA CC: tuner filter does not implement required interface");
     }
     AddPbdaFilter(ref lastFilter);
     CompleteGraph(ref lastFilter);
     bool connected = ConnectTsWriter(_filterTuner);
     Log.Log.Debug("PBDA CC: connect OOB pin result = {0}", connected);
     CheckCableCardInfo();
     string graphName = _device.Name + " - NA Cable Graph.grf";
     FilterGraphTools.SaveGraphFile(_graphBuilder, graphName);
     GetTunerSignalStatistics();
     _graphState = GraphState.Created;
   }
   catch (Exception)
   {
     Dispose();
     throw;
   }
 }

        private void PlayMovieInWindow(string filename)
        {
            int hr = 0;

              if (filename == string.Empty)
            return;

              this.graphBuilder = (IGraphBuilder) new FilterGraph();

              // Have the graph builder construct its the appropriate graph automatically
              hr = this.graphBuilder.RenderFile(filename, null);
              DsError.ThrowExceptionForHR(hr);

              // QueryInterface for DirectShow interfaces
              this.mediaControl = (IMediaControl) this.graphBuilder;
              this.mediaEventEx = (IMediaEventEx) this.graphBuilder;
              this.mediaSeeking = (IMediaSeeking) this.graphBuilder;
              this.mediaPosition = (IMediaPosition) this.graphBuilder;

              // Query for video interfaces, which may not be relevant for audio files
              this.videoWindow = this.graphBuilder as IVideoWindow;
              this.basicVideo = this.graphBuilder as IBasicVideo;

              // Query for audio interfaces, which may not be relevant for video-only files
              this.basicAudio = this.graphBuilder as IBasicAudio;

              // Is this an audio-only file (no video component)?
              CheckVisibility();

              // Have the graph signal event via window callbacks for performance
              hr = this.mediaEventEx.SetNotifyWindow(this.Handle, WMGraphNotify, IntPtr.Zero);
              DsError.ThrowExceptionForHR(hr);

              if (!this.isAudioOnly)
              {
            // Setup the video window
            hr = this.videoWindow.put_Owner(this.Handle);
            DsError.ThrowExceptionForHR(hr);

            hr = this.videoWindow.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipSiblings | WindowStyle.ClipChildren);
            DsError.ThrowExceptionForHR(hr);

            hr = InitVideoWindow(1, 1);
            DsError.ThrowExceptionForHR(hr);

            GetFrameStepInterface();
              }
              else
              {
            // Initialize the default player size and enable playback menu items
            hr = InitPlayerWindow();
            DsError.ThrowExceptionForHR(hr);

            EnablePlaybackMenu(true, MediaType.Audio);
              }

              // Complete window initialization
              CheckSizeMenu(menuFileSizeNormal);
              this.isFullScreen = false;
              this.currentPlaybackRate = 1.0;
              UpdateMainTitle();

            #if DEBUG
              rot = new DsROTEntry(this.graphBuilder);
            #endif

              this.Focus();

              // Run the graph to play the media file
              hr = this.mediaControl.Run();
              DsError.ThrowExceptionForHR(hr);

              this.currentState=PlayState.Running;
        }

        /// <summary>
        /// If the url to be played can be buffered before starting playback, this function
        /// starts building a graph by adding the preferred video and audio render to it.
        /// This needs to be called on the MpMain Thread.
        /// </summary>
        /// <returns>true, if the url can be buffered (a graph was started), false if it can't be and null if an error occured building the graph</returns>
        public bool? PrepareGraph()
        {
            string sourceFilterName = GetSourceFilterName(m_strCurrentFile);

            if (!string.IsNullOrEmpty(sourceFilterName))
            {
                graphBuilder = (IGraphBuilder)new FilterGraph();
                _rotEntry = new DsROTEntry((IFilterGraph)graphBuilder);

                basicVideo = graphBuilder as IBasicVideo2;

                Vmr9 = new VMR9Util();
                Vmr9.AddVMR9(graphBuilder);
                Vmr9.Enable(false);
                // set VMR9 back to NOT Active -> otherwise GUI is not refreshed while graph is building
                GUIGraphicsContext.Vmr9Active = false;

                // add the audio renderer
                using (Settings settings = new MPSettings())
                {
                    string audiorenderer = settings.GetValueAsString("movieplayer", "audiorenderer", "Default DirectSound Device");
                    DirectShowUtil.AddAudioRendererToGraph(graphBuilder, audiorenderer, false);
                }

                // set fields for playback
                mediaCtrl = (IMediaControl)graphBuilder;
                mediaEvt = (IMediaEventEx)graphBuilder;
                mediaSeek = (IMediaSeeking)graphBuilder;
                mediaPos = (IMediaPosition)graphBuilder;
                basicAudio = (IBasicAudio)graphBuilder;
                videoWin = (IVideoWindow)graphBuilder;

                // add the source filter
                IBaseFilter sourceFilter = null;
                try
                {
                    if (sourceFilterName == OnlineVideos.MPUrlSourceFilter.Downloader.FilterName)
                    {
                        sourceFilter = FilterFromFile.LoadFilterFromDll("MPUrlSourceSplitter\\MPUrlSourceSplitter.ax", new Guid(OnlineVideos.MPUrlSourceFilter.Downloader.FilterCLSID), true);
                        if (sourceFilter != null)
                            Marshal.ThrowExceptionForHR(graphBuilder.AddFilter(sourceFilter, OnlineVideos.MPUrlSourceFilter.Downloader.FilterName));
                    }
                    if (sourceFilter == null)
                    {
                        sourceFilter = DirectShowUtil.AddFilterToGraph(graphBuilder, sourceFilterName);
                    }
                }
                catch (Exception ex)
                {
                    Log.Instance.Warn("Error adding '{0}' filter to graph: {1}", sourceFilterName, ex.Message);
                    return null;
                }
                finally
                {
                    if (sourceFilter != null) DirectShowUtil.ReleaseComObject(sourceFilter, 2000);
                }
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// Initialize the graph
        /// </summary>
        public void InitGraph()
        {
            if (theDevice == null)
                return;

            //Create the Graph
            graphBuilder = (IGraphBuilder) new FilterGraph();

            //Create the Capture Graph Builder
            ICaptureGraphBuilder2 captureGraphBuilder = null;
            captureGraphBuilder = (ICaptureGraphBuilder2) new CaptureGraphBuilder2();

            //Create the media control for controlling the graph
            mediaControl = (IMediaControl) this.graphBuilder;

            // Attach the filter graph to the capture graph
            int hr = captureGraphBuilder.SetFiltergraph(this.graphBuilder);
            DsError.ThrowExceptionForHR(hr);

            //Add the Video input device to the graph
            hr = graphBuilder.AddFilter(theDevice, "source filter");
            DsError.ThrowExceptionForHR(hr);

            //Add the Video compressor filter to the graph
            hr = graphBuilder.AddFilter(theCompressor, "compressor filter");
            DsError.ThrowExceptionForHR(hr);

            //Create the file writer part of the graph. SetOutputFileName does this for us, and returns the mux and sink
            IBaseFilter mux;
            IFileSinkFilter sink;
            hr = captureGraphBuilder.SetOutputFileName(MediaSubType.Avi, textBox1.Text, out mux, out sink);
            DsError.ThrowExceptionForHR(hr);

            //Render any preview pin of the device
            hr = captureGraphBuilder.RenderStream(PinCategory.Preview, MediaType.Video, theDevice, null, null);
            DsError.ThrowExceptionForHR(hr);

            //Connect the device and compressor to the mux to render the capture part of the graph
            hr = captureGraphBuilder.RenderStream(PinCategory.Capture, MediaType.Video, theDevice, theCompressor, mux);
            DsError.ThrowExceptionForHR(hr);

            #if DEBUG
            m_rot = new DsROTEntry(graphBuilder);
            #endif

            //get the video window from the graph
            IVideoWindow videoWindow = null;
            videoWindow = (IVideoWindow) graphBuilder;

            //Set the owener of the videoWindow to an IntPtr of some sort (the Handle of any control - could be a form / button etc.)
            hr = videoWindow.put_Owner(panel1.Handle);
            DsError.ThrowExceptionForHR(hr);

            //Set the style of the video window
            hr = videoWindow.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren);
            DsError.ThrowExceptionForHR(hr);

            // Position video window in client rect of main application window
            hr = videoWindow.SetWindowPosition(0,0, panel1.Width, panel1.Height);
            DsError.ThrowExceptionForHR(hr);

            // Make the video window visible
            hr = videoWindow.put_Visible(OABool.True);
            DsError.ThrowExceptionForHR(hr);

            Marshal.ReleaseComObject(mux);
            Marshal.ReleaseComObject(sink);
            Marshal.ReleaseComObject(captureGraphBuilder);
        }

        // Build the capture graph for grabber and renderer.</summary>
        // (Control to show video in, Filename to play)
        private void SetupGraph(Control hWin, string FileName)
        {
            int hr;

            // Get the graphbuilder object
            m_FilterGraph = new FilterGraph() as IFilterGraph2;

            // Get a ICaptureGraphBuilder2 to help build the graph
            ICaptureGraphBuilder2 icgb2 = new CaptureGraphBuilder2() as ICaptureGraphBuilder2;

            try
            {
                // Link the ICaptureGraphBuilder2 to the IFilterGraph2
                hr = icgb2.SetFiltergraph(m_FilterGraph);
                DsError.ThrowExceptionForHR(hr);

            #if DEBUG
                // Allows you to view the graph with GraphEdit File/Connect
                m_DsRot = new DsROTEntry(m_FilterGraph);
            #endif
                // Add the filters necessary to render the file.  This function will
                // work with a number of different file types.
                IBaseFilter sourceFilter = null;
                hr = m_FilterGraph.AddSourceFilter(FileName, FileName, out sourceFilter);
                DsError.ThrowExceptionForHR(hr);

                // Get the SampleGrabber interface
                m_sampGrabber = (ISampleGrabber)new SampleGrabber();
                IBaseFilter baseGrabFlt = (IBaseFilter)m_sampGrabber;

                // Configure the Sample Grabber
                ConfigureSampleGrabber(m_sampGrabber);

                // Add it to the filter
                hr = m_FilterGraph.AddFilter(baseGrabFlt, "Ds.NET Grabber");
                DsError.ThrowExceptionForHR(hr);

                // Connect the pieces together, use the default renderer
                hr = icgb2.RenderStream(null, null, sourceFilter, baseGrabFlt, null);
                DsError.ThrowExceptionForHR(hr);

                // Now that the graph is built, read the dimensions of the bitmaps we'll be getting
                SaveSizeInfo(m_sampGrabber);

                // Configure the Video Window
                IVideoWindow videoWindow = m_FilterGraph as IVideoWindow;
                ConfigureVideoWindow(videoWindow, hWin);

                // Grab some other interfaces
                m_mediaEvent = m_FilterGraph as IMediaEvent;
                m_mediaCtrl = m_FilterGraph as IMediaControl;
            }
            finally
            {
                if (icgb2 != null)
                {
                    Marshal.ReleaseComObject(icgb2);
                    icgb2 = null;
                }
            }
            #if DEBUG
            // Double check to make sure we aren't releasing something
            // important.
            GC.Collect();
            GC.WaitForPendingFinalizers();
            #endif
        }

        /// <summary> build the capture graph for grabber. </summary>
        private void SetupGraph(string FileName, Control hWin)
        {
            int hr;

            IBaseFilter ibfRenderer = null;
            ISampleGrabber sampGrabber = null;
            IBaseFilter capFilter = null;
            IPin iPinInFilter = null;
            IPin iPinOutFilter = null;
            IPin iPinInDest = null;
            IBasicAudio basicAudio = null;

            // Get the graphbuilder object
            m_FilterGraph = new FilterGraph() as IFilterGraph2;
            #if DEBUG
            m_rot = new DsROTEntry(m_FilterGraph);
            #endif

            try
            {
                // Get the SampleGrabber interface
                sampGrabber = new SampleGrabber() as ISampleGrabber;

                // Add the video source
                hr = m_FilterGraph.AddSourceFilter(FileName, "Ds.NET FileFilter", out capFilter);
                DsError.ThrowExceptionForHR(hr);

                // Hopefully this will be the video pin
                IPin iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, 0);

                IBaseFilter baseGrabFlt = sampGrabber as IBaseFilter;
                ConfigureSampleGrabber(sampGrabber);

                iPinInFilter = DsFindPin.ByDirection(baseGrabFlt, PinDirection.Input, 0);
                iPinOutFilter = DsFindPin.ByDirection(baseGrabFlt, PinDirection.Output, 0);

                // Add the frame grabber to the graph
                hr = m_FilterGraph.AddFilter(baseGrabFlt, "Ds.NET Grabber");
                DsError.ThrowExceptionForHR(hr);

                hr = m_FilterGraph.Connect(iPinOutSource, iPinInFilter);
                DsError.ThrowExceptionForHR(hr);

                // Get the default video renderer
                ibfRenderer = (IBaseFilter)new VideoRendererDefault();

                // Add it to the graph
                hr = m_FilterGraph.AddFilter(ibfRenderer, "Ds.NET VideoRendererDefault");
                DsError.ThrowExceptionForHR(hr);
                iPinInDest = DsFindPin.ByDirection(ibfRenderer, PinDirection.Input, 0);

                // Connect the graph.  Many other filters automatically get added here
                hr = m_FilterGraph.Connect(iPinOutFilter, iPinInDest);
                DsError.ThrowExceptionForHR(hr);

                SaveSizeInfo(sampGrabber);

                // Set the output window

                IVideoWindow videoWindow = m_FilterGraph as IVideoWindow;
                hr = videoWindow.put_Owner(hWin.Handle);
                DsError.ThrowExceptionForHR(hr);

                hr = videoWindow.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren | WindowStyle.ClipSiblings);
                DsError.ThrowExceptionForHR(hr);

                hr = videoWindow.put_Visible(OABool.True);
                DsError.ThrowExceptionForHR(hr);

                //TODO : Need a better way to hide the video in the parent Window
                Rectangle rc = hWin.ClientRectangle;
                if (mParentWindowDisplay)
                    hr = videoWindow.SetWindowPosition(0, 0, rc.Right, rc.Bottom);
                else
                    hr = videoWindow.SetWindowPosition(0, 0, 0, 0);
                DsError.ThrowExceptionForHR(hr);

                IGraphBuilder graphBuilder = m_FilterGraph as IGraphBuilder;
                ICaptureGraphBuilder2 captureGraphBuilder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();

                // Attach the filter graph to the capture graph
                hr = captureGraphBuilder.SetFiltergraph(graphBuilder);
                DsError.ThrowExceptionForHR(hr);

                hr = captureGraphBuilder.RenderStream(null, MediaType.Audio, capFilter, null, null);

            }
            finally
            {
                if (capFilter != null)
                {
                    Marshal.ReleaseComObject(capFilter);
                    capFilter = null;
                }
                if (sampGrabber != null)
                {
                    Marshal.ReleaseComObject(sampGrabber);
                    sampGrabber = null;
                }
//.........这里部分代码省略.........

        private void InitializeGraph(bool isDvd)
        {
            int hr = 0;
            _isDvd = isDvd;
            m_filterGraph = new FilterGraphNoThread();
            m_graph = (m_filterGraph as DirectShowLib.IGraphBuilder);

            // QueryInterface for DirectShow interfaces
            _mediaControl = (DirectShowLib.IMediaControl)m_graph;
            _mediaEventEx = (DirectShowLib.IMediaEventEx)m_graph;
            _mediaSeeking = (DirectShowLib.IMediaSeeking)m_graph;
            _mediaPosition = (DirectShowLib.IMediaPosition)m_graph;

            // Query for video interfaces, which may not be relevant for audio files
            _videoWindow = m_graph as DirectShowLib.IVideoWindow;
            _basicVideo = m_graph as DirectShowLib.IBasicVideo;

            // Query for audio interfaces, which may not be relevant for video-only files
            _basicAudio = m_graph as DirectShowLib.IBasicAudio;

            // Set up event notification.
            if (isDvd)
                hr = _mediaEventEx.SetNotifyWindow(VideoWindowHandle, DirectShowPlayerConfiguration.WM_DVD_EVENT, IntPtr.Zero);
            else
                hr = _mediaEventEx.SetNotifyWindow(VideoWindowHandle, DirectShowPlayerConfiguration.WM_GRAPH_NOTIFY, IntPtr.Zero);
            DsError.ThrowExceptionForHR(hr);

            if (_config.PublishGraph)
                m_dsRot = new DsROTEntry(m_graph as IFilterGraph);
        }

    protected bool GetInterfaces(string filename, int titleBD)
    {
      try
      {
        Log.Debug("BDPlayer: GetInterfaces()");

        _graphBuilder = (IGraphBuilder)new FilterGraph();
        _rotEntry = new DsROTEntry(_graphBuilder as IFilterGraph);

        filterConfig = GetFilterConfiguration();

        if (filterConfig.AudioRenderer.Length > 0)
        {
          _audioRendererFilter = DirectShowUtil.AddAudioRendererToGraph(_graphBuilder, filterConfig.AudioRenderer, true);
        }

        BDReader reader = new BDReader();
        _interfaceBDReader = reader as IBaseFilter;
        _ireader = reader as IBDReader;

        if (_interfaceBDReader == null || _ireader == null)
        {
          // todo: add exception
          return false;
        }

        // add the BD reader
        int hr = _graphBuilder.AddFilter(_interfaceBDReader, BD_READER_GRAPH_NAME);
        DsError.ThrowExceptionForHR(hr);

        Log.Debug("BDPlayer: Add BDReader to graph");

        IFileSourceFilter interfaceFile = (IFileSourceFilter)_interfaceBDReader;

        LoadSettings(_ireader);
        _ireader.SetD3DDevice(DirectShowUtil.GetUnmanagedDevice(GUIGraphicsContext.DX9Device));
        _ireader.SetBDReaderCallback(this);

        hr = interfaceFile.Load(filename, null);

        DsError.ThrowExceptionForHR(hr);

        Log.Debug("BDPlayer: BDReader loaded: {0}", filename);

        List<TitleInfo> titles = GetTitleInfoCollection(_ireader);

        while (true)
        {
          if (g_Player.ForcePlay && g_Player.SetResumeBDTitleState < g_Player.BdDefaultTitle)
          {
            if (titles.Count == 1)
            {
              _titleToPlay = 0;
              g_Player.SetResumeBDTitleState = g_Player.BdRemuxTitle;
            }
            else
            {
              _titleToPlay = g_Player.SetResumeBDTitleState;
            }
            _forceTitle = true;
            g_Player.ForcePlay = false;
          }
          else
          {
            if (titles.Count == 1)
            {
              // BD has only one title (remux one)
              _forceTitle = true;
              _titleToPlay = 0;
              g_Player.SetResumeBDTitleState = g_Player.BdRemuxTitle;

              if (g_Player.SetResumeBDTitleState == -1)
              {
                // user cancelled dialog
                titles.Dispose();
                g_Player.Stop();
                return false;
              }
            }
            else
            {
              _titleToPlay = SelectTitle(titles);
              g_Player.SetResumeBDTitleState = _titleToPlay;
              Log.Info("BDPlayer: BDReader _titleToPlay : {0}", _titleToPlay);
              if (_titleToPlay > -1)
              {
                // a specific title was selected
                _forceTitle = true;

                if (g_Player.SetResumeBDTitleState == -1)
                {
                  // user cancelled dialog
                  titles.Dispose();
                  g_Player.Stop();
                  return false;
                }
              }
              else
              {
                if (_titleToPlay == -1)
//.........这里部分代码省略.........

        public void CaptureVideo()
        {
            int hr = 0;
              IBaseFilter sourceFilter = null;

              try
              {
            // Get DirectShow interfaces
            GetInterfaces();

            // Attach the filter graph to the capture graph
            hr = this.captureGraphBuilder.SetFiltergraph(this.graphBuilder);
            DsError.ThrowExceptionForHR(hr);

            // Use the system device enumerator and class enumerator to find
            // a video capture/preview device, such as a desktop USB video camera.
            sourceFilter = FindCaptureDevice();

            // Add Capture filter to our graph.
            hr = this.graphBuilder.AddFilter(sourceFilter, "Video Capture");
            DsError.ThrowExceptionForHR(hr);

            // Render the preview pin on the video capture filter
            // Use this instead of this.graphBuilder.RenderFile
            hr = this.captureGraphBuilder.RenderStream(PinCategory.Preview, MediaType.Video, sourceFilter, null, null);
            DsError.ThrowExceptionForHR(hr);

            // Now that the filter has been added to the graph and we have
            // rendered its stream, we can release this reference to the filter.
            Marshal.ReleaseComObject(sourceFilter);

            // Set video window style and position
            SetupVideoWindow();

            // Add our graph to the running object table, which will allow
            // the GraphEdit application to "spy" on our graph
            rot = new DsROTEntry(this.graphBuilder);

            // Start previewing video data
            hr = this.mediaControl.Run();
            DsError.ThrowExceptionForHR(hr);

            // Remember current state
            this.currentState = PlayState.Running;
              }
              catch
              {
            MessageBox.Show("An unrecoverable error has occurred.");
              }
        }