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

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

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

        //TODO Fichier déjà utilisé.... surement par Quartz. Essayer de libérer les ressources de la librairie
        public void Play(Guid id, byte[] file)
        {
            objFilterGraph = new FilgraphManager();
            audio = (IBasicAudio) objFilterGraph;
            //pb d'accès concurrenciel
            string path = ConfigurationManager.AppSettings["MediaCache"] + id + ".mp3";
            File.WriteAllBytes(path, file);

            objFilterGraph.RenderFile(path);
            objMediaPosition = objFilterGraph as IMediaPosition;

            objFilterGraph.Run();

            tmProgressionFlux = new Timer(1000) { Enabled = true };
            tmProgressionFlux.Elapsed += TmProgressionFluxTick;
            TimerResume();
        }

        /// <summary>
        /// Plays the given mediafile in the internal mediaplayer
        /// </summary>
        /// <param name="FilePath">File to play</param>
        public void ShowMedia(string FilePath)
        {
            StopMedia();
            Lbl_CurrentMedia.Text = Path.GetFileName(FilePath);
            m_objFilterGraph = new FilgraphManager();
            m_objFilterGraph.RenderFile(FilePath);

            m_objBasicAudio = m_objFilterGraph as IBasicAudio;

            try
            {
                m_objVideoWindow = m_objFilterGraph as IVideoWindow;
                m_objVideoWindow.Owner = (int)panel2.Handle;
                //m_objVideoWindow.Owner = (int)panel1.Handle;

                m_objVideoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
                m_objVideoWindow.SetWindowPosition(panel2.ClientRectangle.Left,
                   panel2.ClientRectangle.Top,
                    panel2.ClientRectangle.Width,
                    panel2.ClientRectangle.Height);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
                m_objVideoWindow = null;
            }

            m_objMediaEvent = m_objFilterGraph as IMediaEvent;

            m_objMediaEventEx = m_objFilterGraph as IMediaEventEx;
            m_objMediaEventEx.SetNotifyWindow((int)this.Handle, WM_GRAPHNOTIFY, 0);

            m_objMediaPosition = m_objFilterGraph as IMediaPosition;

            m_objMediaControl = m_objFilterGraph as IMediaControl;

            m_objMediaControl.Run();
            m_CurrentStatus = MediaStatus.Running;
            UpdateMediaButtons();

            //UpdateStatusBar();
            //UpdateToolBar();
        }

        public override void Initialize(Control ownerControl, string videoFileName, EventHandler onVideoLoaded, EventHandler onVideoEnded)
        {
            const int wsChild = 0x40000000;

            string ext = System.IO.Path.GetExtension(videoFileName).ToLower();
            bool isAudio = ext == ".mp3" || ext == ".wav" || ext == ".wma" || ext == ".ogg" || ext == ".mpa" || ext == ".m4a" || ext == ".ape" || ext == ".aiff" || ext == ".flac" || ext == ".acc" || ext == ".mka";

            OnVideoLoaded = onVideoLoaded;
            OnVideoEnded = onVideoEnded;

            VideoFileName = videoFileName;
            _owner = ownerControl;
            _quartzFilgraphManager = new FilgraphManager();
            _quartzFilgraphManager.RenderFile(VideoFileName);

            if (!isAudio)
            {
                _quartzVideo = _quartzFilgraphManager as IVideoWindow;
                _quartzVideo.Owner = (int)ownerControl.Handle;
                _quartzVideo.SetWindowPosition(0, 0, ownerControl.Width, ownerControl.Height);
                _quartzVideo.WindowStyle = wsChild;
            }
            //Play();

            if (!isAudio)
                (_quartzFilgraphManager as IBasicVideo).GetVideoSize(out _sourceWidth, out _sourceHeight);

            _owner.Resize += OwnerControlResize;
            _mediaPosition = (IMediaPosition)_quartzFilgraphManager;
            if (OnVideoLoaded != null)
            {
                _videoLoader = new BackgroundWorker();
                _videoLoader.RunWorkerCompleted += VideoLoaderRunWorkerCompleted;
                _videoLoader.DoWork += VideoLoaderDoWork;
                _videoLoader.RunWorkerAsync();
            }

            OwnerControlResize(this, null);
            _videoEndTimer = new Timer { Interval = 500 };
            _videoEndTimer.Tick += VideoEndTimerTick;
            _videoEndTimer.Start();

            if (!isAudio)
                _quartzVideo.MessageDrain = (int)ownerControl.Handle;
        }

//.........这里部分代码省略.........
            if (EVRControl == null)
            {
                //Ищем рендерер и ВКЛЮЧАЕМ соблюдение аспекта (рендерер сам подгонит картинку под размер окна, с учетом аспекта)
                IsRendererARFixed = false;
                IBaseFilter filter = null;
                graphBuilder.FindFilterByName("Video Renderer", out filter);
                if (filter != null)
                {
                    IVMRAspectRatioControl vmr = filter as IVMRAspectRatioControl;
                    if (vmr != null)
                    {
                        DsError.ThrowExceptionForHR(vmr.SetAspectRatioMode(VMRAspectRatioMode.LetterBox));
                        IsRendererARFixed = true;
                    }
                }
                else
                {
                    graphBuilder.FindFilterByName("Video Mixing Renderer 9", out filter);
                    if (filter != null)
                    {
                        IVMRAspectRatioControl9 vmr9 = filter as IVMRAspectRatioControl9;
                        if (vmr9 != null)
                        {
                            DsError.ThrowExceptionForHR(vmr9.SetAspectRatioMode(VMRAspectRatioMode.LetterBox));
                            IsRendererARFixed = true;
                        }
                    }
                }
            }
            else
                IsRendererARFixed = true;

            this.mediaControl = (IMediaControl)this.graphBuilder;
            this.mediaEventEx = (IMediaEventEx)this.graphBuilder;
            this.mediaSeeking = (IMediaSeeking)this.graphBuilder;
            this.mediaPosition = (IMediaPosition)this.graphBuilder;
            this.videoWindow = (EVRControl == null) ? this.graphBuilder as IVideoWindow : null;
            this.basicVideo = (EVRControl == null) ? this.graphBuilder as IBasicVideo : null;
            this.basicAudio = this.graphBuilder as IBasicAudio;
            this.basicAudio.put_Volume(VolumeSet);
            this.CheckIsAudioOnly();
            if (!this.isAudioOnly)
            {
                if (videoWindow != null)
                {
                    hr = this.videoWindow.put_Owner(this.source.Handle);
                    DsError.ThrowExceptionForHR(hr);

                    hr = this.videoWindow.put_MessageDrain(this.source.Handle);
                    DsError.ThrowExceptionForHR(hr);

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

                this.MoveVideoWindow();
            }
            else
            {
                if (VHost != null)
                {
                    VHost.Dispose();
                    VHost = null;
                    VHandle = IntPtr.Zero;
                    VHostElement.Child = null;
                    VHostElement.Visibility = Visibility.Collapsed;
                }
            }

            hr = this.mediaEventEx.SetNotifyWindow(this.source.Handle, WMGraphNotify, IntPtr.Zero);
            DsError.ThrowExceptionForHR(hr);

            //Восстанавливаем старую позицию
            if (mediaload == MediaLoad.Update && oldpos != TimeSpan.Zero)
            {
                if (NaturalDuration >= oldpos)
                {
                    hr = mediaPosition.put_CurrentPosition(oldpos.TotalSeconds);
                    DsError.ThrowExceptionForHR(hr);
                }
            }

            //Восстанавливаем старый PlayState
            if (mediaload == MediaLoad.Update && (oldplaystate == PlayState.Paused || oldplaystate == PlayState.Stopped))
            {
                hr = this.mediaControl.Pause();
                DsError.ThrowExceptionForHR(hr);
                this.currentState = PlayState.Paused;
                this.SetPlayIcon();
            }
            else
            {
                hr = this.mediaControl.Run();
                DsError.ThrowExceptionForHR(hr);
                this.currentState = PlayState.Running;
                this.SetPauseIcon();
            }

            AddFiltersToMenu();
        }

//.........这里部分代码省略.........
            graphBuilder.Render(pins[0]);
          }
        }

        #endregion

        // Connect DVB subtitle filter pins in the graph
        if (_mpegDemux != null && enableDvbSubtitles == true)
        {
          IMpeg2Demultiplexer demuxer = _mpegDemux as IMpeg2Demultiplexer;
          hr = demuxer.CreateOutputPin(GetTSMedia(), "Pcr", out _pinPcr);

          if (hr == 0)
          {
            Log.Info("RTSPPlayer:_pinPcr OK");

            IPin pDemuxerPcr = DsFindPin.ByName(_mpegDemux, "Pcr");
            IPin pSubtitlePcr = DsFindPin.ByName(_subtitleFilter, "Pcr");
            hr = graphBuilder.Connect(pDemuxerPcr, pSubtitlePcr);
          }
          else
          {
            Log.Info("RTSPPlayer:Failed to create _pinPcr in demuxer:{0:X}", hr);
          }

          hr = demuxer.CreateOutputPin(GetTSMedia(), "Subtitle", out _pinSubtitle);
          if (hr == 0)
          {
            Log.Info("RTSPPlayer:_pinSubtitle OK");

            IPin pDemuxerSubtitle = DsFindPin.ByName(_mpegDemux, "Subtitle");
            IPin pSubtitle = DsFindPin.ByName(_subtitleFilter, "In");
            hr = graphBuilder.Connect(pDemuxerSubtitle, pSubtitle);
          }
          else
          {
            Log.Info("RTSPPlayer:Failed to create _pinSubtitle in demuxer:{0:X}", hr);
          }

          hr = demuxer.CreateOutputPin(GetTSMedia(), "PMT", out _pinPMT);
          if (hr == 0)
          {
            Log.Info("RTSPPlayer:_pinPMT OK");

            IPin pDemuxerSubtitle = DsFindPin.ByName(_mpegDemux, "PMT");
            IPin pSubtitle = DsFindPin.ByName(_subtitleFilter, "PMT");
            hr = graphBuilder.Connect(pDemuxerSubtitle, pSubtitle);
          }
          else
          {
            Log.Info("RTSPPlayer:Failed to create _pinPMT in demuxer:{0:X}", hr);
          }
        }


        if (IsRadio == false)
        {
          if (!VMR9Util.g_vmr9.IsVMR9Connected)
          {
            //VMR9 is not supported, switch to overlay
            Log.Info("RTSPPlayer: vmr9 not connected");
            _mediaCtrl = null;
            Cleanup();
            return false;
          }
          VMR9Util.g_vmr9.SetDeinterlaceMode();
        }

        _mediaCtrl = (IMediaControl)graphBuilder;
        mediaEvt = (IMediaEventEx)graphBuilder;
        _mediaSeeking = (IMediaSeeking)graphBuilder;
        mediaPos = (IMediaPosition)graphBuilder;
        basicAudio = graphBuilder as IBasicAudio;
        //DirectShowUtil.SetARMode(graphBuilder,AspectRatioMode.Stretched);
        DirectShowUtil.EnableDeInterlace(graphBuilder);
        if (VMR9Util.g_vmr9 != null)
        {
          m_iVideoWidth = VMR9Util.g_vmr9.VideoWidth;
          m_iVideoHeight = VMR9Util.g_vmr9.VideoHeight;
        }
        if (audioRendererFilter != null)
        {
          Log.Info("RTSPPlayer9:set reference clock");
          IMediaFilter mp = graphBuilder as IMediaFilter;
          IReferenceClock clock = audioRendererFilter as IReferenceClock;
          hr = mp.SetSyncSource(null);
          hr = mp.SetSyncSource(clock);
          Log.Info("RTSPPlayer9:set reference clock:{0:X}", hr);
        }
        Log.Info("RTSPPlayer: graph build successfull");
        return true;
      }
      catch (Exception ex)
      {
        Error.SetError("Unable to play movie", "Unable build graph for VMR9");
        Log.Error("RTSPPlayer:exception while creating DShow graph {0} {1}", ex.Message, ex.StackTrace);
        CloseInterfaces();
        return false;
      }
    }

//.........这里部分代码省略.........
                catch (Exception ex)
                {
                    string strEx = ex.Message;
                }

                Guid riid;

                if (_dvdInfo == null)
                {
                    riid = typeof(IDvdInfo2).GUID;
                    hr = _dvdGraph.GetDvdInterface(riid, out comobj);
                    if (hr < 0)
                    {
                        Marshal.ThrowExceptionForHR(hr);
                    }
                    _dvdInfo = (IDvdInfo2)comobj;
                    comobj = null;
                }

                if (_dvdCtrl == null)
                {
                    riid = typeof(IDvdControl2).GUID;
                    hr = _dvdGraph.GetDvdInterface(riid, out comobj);
                    if (hr < 0)
                    {
                        Marshal.ThrowExceptionForHR(hr);
                    }
                    _dvdCtrl = (IDvdControl2)comobj;
                    comobj = null;
                }

                _mediaCtrl = (IMediaControl)_graphBuilder;
                _mediaEvt = (IMediaEventEx)_graphBuilder;
                _basicAudio = _graphBuilder as IBasicAudio;
                _mediaPos = (IMediaPosition)_graphBuilder;
                _mediaSeek = (IMediaSeeking)_graphBuilder;
                _mediaStep = (IVideoFrameStep)_graphBuilder;
                _basicVideo = _graphBuilder as IBasicVideo2;
                _videoWin = _graphBuilder as IVideoWindow;

                // disable Closed Captions!
                IBaseFilter baseFilter;
                _graphBuilder.FindFilterByName("Line 21 Decoder", out baseFilter);
                if (baseFilter == null)
                {
                    _graphBuilder.FindFilterByName("Line21 Decoder", out baseFilter);
                }
                if (baseFilter != null)
                {
                    _line21Decoder = (IAMLine21Decoder)baseFilter;
                    if (_line21Decoder != null)
                    {
                        AMLine21CCState state = AMLine21CCState.Off;
                        hr = _line21Decoder.SetServiceState(state);
                        if (hr == 0)
                        {
                            logger.Info("DVDPlayer:Closed Captions disabled");
                        }
                        else
                        {
                            logger.Info("DVDPlayer:failed 2 disable Closed Captions");
                        }
                    }
                }
                /*
                        // get video window
                        if (_videoWin==null)
                        {
                          riid = typeof( IVideoWindow ).GUID;
                          hr = _dvdGraph.GetDvdInterface( ref riid, out comobj );
                          if( hr < 0 )
                            Marshal.ThrowExceptionForHR( hr );
                          _videoWin = (IVideoWindow) comobj; comobj = null;
                        }
                  */
                // GetFrameStepInterface();

                DirectShowUtil.SetARMode(_graphBuilder, arMode);
                DirectShowUtil.EnableDeInterlace(_graphBuilder);
                //m_ovMgr = new OVTOOLLib.OvMgrClass();
                //m_ovMgr.SetGraph(_graphBuilder);

                return true;
            }
            catch (Exception)
            {

                //MessageBox.Show( this, "Could not get interfaces\r\n" + ee.Message, "DVDPlayer.NET", MessageBoxButtons.OK, MessageBoxIcon.Stop );
                CloseDVDInterfaces();
                return false;
            }
            finally
            {
                if (comobj != null)
                {
                    DirectShowUtil.ReleaseComObject(comobj);
                }
                comobj = null;
            }
        }

        public override void Initialize(Control ownerControl, string videoFileName, EventHandler onVideoLoaded, EventHandler onVideoEnded)
        {
            const int wsChild = 0x40000000;

            var extension = System.IO.Path.GetExtension(videoFileName);
            if (extension == null)
            {
                return;
            }

            string ext = extension.ToLower();
            bool isAudio = ext == ".mp3" || ext == ".wav" || ext == ".wma" || ext == ".m4a";

            OnVideoLoaded = onVideoLoaded;
            OnVideoEnded = onVideoEnded;

            VideoFileName = videoFileName;
            owner = ownerControl;
            quartzFilgraphManager = new FilgraphManager();
            quartzFilgraphManager.RenderFile(VideoFileName);

            if (!isAudio)
            {
                quartzVideo = quartzFilgraphManager as IVideoWindow;
                if (quartzVideo != null)
                {
                    quartzVideo.Owner = (int)ownerControl.Handle;
                    quartzVideo.SetWindowPosition(0, 0, ownerControl.Width, ownerControl.Height);
                    quartzVideo.WindowStyle = wsChild;
                }
            }
            //Play();

            if (!isAudio)
            {
                var basicVideo = quartzFilgraphManager as IBasicVideo;
                if (basicVideo != null)
                {
                    basicVideo.GetVideoSize(out sourceWidth, out sourceHeight);
                }
            }

            owner.Resize += OwnerControlResize;
            mediaPosition = (IMediaPosition)quartzFilgraphManager;
            if (OnVideoLoaded != null)
            {
                videoLoader = new BackgroundWorker();
                videoLoader.RunWorkerCompleted += VideoLoaderRunWorkerCompleted;
                videoLoader.DoWork += VideoLoaderDoWork;
                videoLoader.RunWorkerAsync();
            }

            OwnerControlResize(this, null);
            videoEndTimer = new Timer { Interval = 500 };
            videoEndTimer.Tick += VideoEndTimerTick;
            videoEndTimer.Start();

            if (isAudio)
            {
                return;
            }

            if (quartzVideo != null)
            {
                quartzVideo.MessageDrain = (int)ownerControl.Handle;
            }
        }

        /// <summary>
        /// Initialises DirectShow interfaces
        /// </summary>
        private void InitInterfaces()
        {
            var comtype = Type.GetTypeFromCLSID(Clsid.FilterGraph);
            if (comtype == null)
                throw new NotSupportedException("DirectX (8.1 or higher) not installed?");
            var fg = Activator.CreateInstance(comtype);

            m_graphBuilder = (IGraphBuilder)fg;
            m_mediaControl = (IMediaControl)fg;
            m_mediaEvent = (IMediaEventEx)fg;
            m_mediaSeeking = (IMediaSeeking)fg;
            m_mediaPosition = (IMediaPosition)fg;
            m_basicAudio = (IBasicAudio)fg;

            fg = null;
        }

 /// <summary>
 /// Initialises DirectShow interfaces
 /// </summary>
 private void InitInterfaces()
 {
     fg = new FilterGraph();
     gb = (IGraphBuilder)fg;
     mc = (IMediaControl)fg;
     me = (IMediaEventEx)fg;
     ms = (IMediaSeeking)fg;
     mp = (IMediaPosition)fg;
 }

        private void BuildGraph()
        {
            int hr;
            try
            {
                lblTotalTime.Text = mvs.PlayTime.ToString();
                TimeSpan tt = TimeSpan.Parse(mvs.PlayTime);
                DateTime dt = new DateTime(tt.Ticks);
                lblTotalTime.Text = String.Format("{0:HH:mm:ss}", dt);

                if (mvs.LocalMedia[0].IsDVD)
                {

                    mediaToPlay = mvs.LocalMedia[0];
                    MediaState mediaState = mediaToPlay.State;
                    if (mediaState == MediaState.NotMounted)
                    {
                        MountResult result = mediaToPlay.Mount();
                    }

                    string videoPath = mediaToPlay.GetVideoPath();

                    if (videoPath != null)
                        FirstPlayDvd(videoPath);
                    else
                      FirstPlayDvd(mvs.LocalMedia[0].File.FullName);
                    // Add delegates for Windowless operations
                    AddHandlers();
                    MainForm_ResizeMove(null, null);

                }
                else
                {
                    _graphBuilder = (IFilterGraph2)new FilterGraph();
                    _rotEntry = new DsROTEntry((IFilterGraph)_graphBuilder);
                    _mediaCtrl = (IMediaControl)_graphBuilder;
                    _mediaSeek = (IMediaSeeking)_graphBuilder;
                    _mediaPos = (IMediaPosition)_graphBuilder;
                    _mediaStep = (IVideoFrameStep)_graphBuilder;
                    _vmr9Filter = (IBaseFilter)new VideoMixingRenderer9();
                    ConfigureVMR9InWindowlessMode();
                    AddHandlers();
                    MainForm_ResizeMove(null, null);
                    hr = _graphBuilder.AddFilter(_vmr9Filter, "Video Mixing Render 9");
                    AddPreferedCodecs(_graphBuilder);
                    DsError.ThrowExceptionForHR(hr);
                    hr = _graphBuilder.RenderFile(mvs.LocalMedia[0].File.FullName, null);
                    DsError.ThrowExceptionForHR(hr);
                }

            }
            catch (Exception e)
            {
                CloseDVDInterfaces();
                logger.ErrorException("An error occured during the graph building : \r\n\r\n",e);
            }
        }

        //
        // Starts playback for the selected stream at the specified time
        //
        int OpenStream(string videopath, double videotime)
        {
            double td;  // store stream duration;
            int hr = 0;

            // animate bt logo
            //   logo_webbrowser.Refresh();

            // cover overlay options with video or not
            // if overlay is active
            ////////if (OverlayButton.Checked) // Overlay button config - Melek
            ////////{
            ////////    VideoPanel.Width = VideoPlayerPanel.Width - OverlayPanel.Width;
            ////////    OverlayBar.Location = new System.Drawing.Point(-1, -1); ;
            ////////    OverlayBar.Text = ">";
            ////////}
            ////////else
            ////////// if overlay is not active
            ////////{
            ////////    VideoPanel.Width = VideoPlayerPanel.Width - OverlayBar.Width;
            ////////    OverlayBar.Location = new System.Drawing.Point(OverlayPanel.Width - OverlayBar.Width - 1, -1); ;
            ////////    OverlayBar.Text = "<";
            ////////}

            filename = videopath;
            try//Melek
            {
                if (filename == string.Empty)
                    return -1;

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

                // We manually add the VMR (video mixer/renderer) filter so that we can set it into "mixing" mode.
                // That is needed so that the VMR will deinterlace before playing back
                VideoMixingRenderer vmr = new VideoMixingRenderer(); //Tom's deinterlace changes
                graphBuilder.AddFilter((IBaseFilter)vmr, "vmr");//Tom's deinterlace changes
                IVMRFilterConfig vmrConfig = vmr as IVMRFilterConfig;//Tom's deinterlace changes
                int nRet = vmrConfig.SetNumberOfStreams(1);//Tom's deinterlace changes

                // BuildVideoGraph(videopath); //No more overlay - Melek
                hr = this.graphBuilder.RenderFile(filename, null);//MELek - instead of calling BuildVideoGraph function call RenderFile function directly
                DsError.ThrowExceptionForHR(hr);//Melek

                // 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.VideoPanel.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
                //    hr = InitPlayerWindow();
                //    DsError.ThrowExceptionForHR(hr);

                //EnablePlaybackMenu(true, MediaType.Audio);
                //}

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

            #if DEBUG
                rot = new DsROTEntry(this.graphBuilder);
            #endif
//.........这里部分代码省略.........

        public override void Init()
        {
            if (!isPlaying)
            {
                string Filename = "";
                float size = 0;
                double Max = 0;
                int volume = 0;

                graph = new FilterGraph() as IFilterGraph;
                media = graph as IMediaControl;
                eventEx = media as IMediaEventEx;
                igb = media as IGraphBuilder;
                imp = igb as IMediaPosition;
                master.form.Invoke((MethodInvoker)delegate()
                {
                    Filename = master.form.M_Filename.Text;
                    media.RenderFile(Filename);
                    size = (float)master.form.M_PrevSize.Value;
                    master.form.M_PrevSize.Enabled = false;
                    imp.get_Duration(out Max);
                    master.form.M_Seek.Maximum = (int)(Max);
                    master.form.M_Seek.Value = 0;
                    volume = master.form.M_Volume.Value;
                    span = (uint)(1000000.0f / master.form.M_CollectFPS);
                });
                graph.FindFilterByName("Video Renderer", out render);
                if (render != null)
                {
                    window = render as IVideoWindow;
                    window.put_WindowStyle(
                        WindowStyle.Caption | WindowStyle.Child
                        );
                    window.put_WindowStyleEx(
                        WindowStyleEx.ToolWindow
                        );
                    window.put_Caption("ElectronicBoard - VideoPrev -");

                    int Width, Height, Left, Top;
                    window.get_Width(out Width);
                    window.get_Height(out Height);
                    window.get_Left(out Left);
                    window.get_Top(out Top);
                    renderSize.Width = (int)(Width * size);
                    renderSize.Height = (int)(Height * size);
                    Aspect = (float)renderSize.Height / (float)renderSize.Width;
                    window.SetWindowPosition(Left, Top, renderSize.Width, renderSize.Height);

                    eventEx = media as IMediaEventEx;
                    eventEx.SetNotifyWindow(master.form.Handle, WM_DirectShow, IntPtr.Zero);
                    media.Run();
                    foreach (Process p in Process.GetProcesses())
                    {
                        if (p.MainWindowTitle == "ElectronicBoard - VideoPrev -")
                        {
                            renderwindow = p.MainWindowHandle;
                            break;
                        }
                    }
                    isPlaying = true;
                    iba = media as IBasicAudio;
                    iba.put_Volume(volume);

                    //master.form.checkBox3_CheckedChanged(null, null);
                    master.Start();
                }
            }
        }

//.........这里部分代码省略.........
                // Get the SampleGrabber interface
                sampGrabber = (ISampleGrabber) new SampleGrabber();

                // Start building the graph
                hr = capGraph.SetFiltergraph(m_FilterGraph);
                DsError.ThrowExceptionForHR(hr);

                // Add the video source
                hr = m_FilterGraph.AddSourceFilter(txtAviFileName.Text, "File Source (Async.)", out capFilter);
                DsError.ThrowExceptionForHR(hr);

                //add AVI Decompressor
                IBaseFilter pAVIDecompressor = (IBaseFilter) new AVIDec();
                hr = m_FilterGraph.AddFilter(pAVIDecompressor, "AVI Decompressor");
                DsError.ThrowExceptionForHR(hr);

                IBaseFilter ffdshow;
                try
                {
                    // Create Decoder filter COM object (ffdshow video decoder)
                    Type comtype = Type.GetTypeFromCLSID(new Guid("{04FE9017-F873-410E-871E-AB91661A4EF7}"));
                    if (comtype == null)
                        throw new NotSupportedException("Creating ffdshow video decoder COM object fails.");
                    object comobj = Activator.CreateInstance(comtype);
                    ffdshow = (IBaseFilter) comobj; // error ocurrs! raised exception
                    comobj = null;
                }
                catch
                {
                    CustomMessageBox.Show("Please install/reinstall ffdshow");
                    return;
                }

                hr = m_FilterGraph.AddFilter(ffdshow, "ffdshow");
                DsError.ThrowExceptionForHR(hr);

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

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


                IBaseFilter vidrender = (IBaseFilter) new VideoRenderer();
                hr = m_FilterGraph.AddFilter(vidrender, "Render");
                DsError.ThrowExceptionForHR(hr);


                IPin captpin = DsFindPin.ByDirection(capFilter, PinDirection.Output, 0);

                IPin ffdpinin = DsFindPin.ByName(ffdshow, "In");

                IPin ffdpinout = DsFindPin.ByName(ffdshow, "Out");

                IPin samppin = DsFindPin.ByName(baseGrabFlt, "Input");

                hr = m_FilterGraph.Connect(captpin, ffdpinin);
                DsError.ThrowExceptionForHR(hr);
                hr = m_FilterGraph.Connect(ffdpinout, samppin);
                DsError.ThrowExceptionForHR(hr);

                FileWriter filewritter = new FileWriter();
                IFileSinkFilter filemux = (IFileSinkFilter) filewritter;
                //filemux.SetFileName("test.avi",);

                //hr = capGraph.RenderStream(null, MediaType.Video, capFilter, null, vidrender);
                // DsError.ThrowExceptionForHR(hr); 

                SaveSizeInfo(sampGrabber);

                // setup buffer
                if (m_handle == IntPtr.Zero)
                    m_handle = Marshal.AllocCoTaskMem(m_stride*m_videoHeight);

                // tell the callback to ignore new images
                m_PictureReady = new ManualResetEvent(false);
                m_bGotOne = false;
                m_bRunning = false;

                timer1 = new Thread(timer);
                timer1.IsBackground = true;
                timer1.Start();

                m_mediaextseek = m_FilterGraph as IAMExtendedSeeking;
                m_mediapos = m_FilterGraph as IMediaPosition;
                m_mediaseek = m_FilterGraph as IMediaSeeking;
                double length = 0;
                m_mediapos.get_Duration(out length);
                trackBar_mediapos.Minimum = 0;
                trackBar_mediapos.Maximum = (int) length;

                Start();
            }
            else
            {
                MessageBox.Show("File does not exist");
            }
        }

        private void openMedia()
        {
            openFileDialog1.Filter = "Media Files|*.mpg;*.avi;*.wma;*.mov;*.wav;*.mp2;*.mp3|All Files|*.*";
            if (DialogResult.OK == openFileDialog1.ShowDialog()) {
                CleanUp();
                m_objFilterGraph = new FilgraphManager();
                m_objFilterGraph.RenderFile(openFileDialog1.FileName);
                m_objBasicAudio = m_objFilterGraph as IBasicAudio;

                try
                {
                    m_objVideoWindow = m_objFilterGraph as IVideoWindow;
                    m_objVideoWindow.Owner = (int)panel1.Handle;
                    m_objVideoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
                    m_objVideoWindow.SetWindowPosition(panel1.ClientRectangle.Left,
                        panel1.ClientRectangle.Top,
                        panel1.ClientRectangle.Width,
                        panel1.ClientRectangle.Height);
                }
                catch(Exception) {
                    m_objVideoWindow = null;
                }

                m_objMediaEvent = m_objFilterGraph as IMediaEvent;
                m_objMediaEventEx = m_objFilterGraph as IMediaEventEx;
                m_objMediaEventEx.SetNotifyWindow((int) this.Handle, WM_GRAPHNOTIFY, 0);
                m_objMediaPosition = m_objFilterGraph as IMediaPosition;
                m_objMediaControl = m_objFilterGraph as IMediaControl;
                this.Text = "Whistle- " + openFileDialog1.FileName + "]";
                m_objMediaControl.Run();
                m_CurrentStatus = MediaStatus.Running;

            }
        }

        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;
        }

 // Methods
 internal AudioAnimate(string prefix, string localname, string ns, SvgDocument doc)
     : base(prefix, localname, ns, doc)
 {
     this.m_objFilterGraph = null;
     this.m_objBasicAudio = null;
     this.m_objMediaEvent = null;
     this.m_objMediaEventEx = null;
     this.m_objMediaPosition = null;
     this.m_objMediaControl = null;
     this.fillColor = Color.Khaki;
     this.fileName = string.Empty;
     this.m_CurrentStatus = MediaStatus.None;
     this.timer = new Timer();
     this.oldtime = 0f;
     this.timertime = 0f;
     this.timer.Interval = 100;
     this.timer.Tick += new EventHandler(this.TimerTick);
 }