// Save the size parameters for use in SnapShot private void SaveSizeInfo(DirectShowLib.ISampleGrabber sampGrabber) { int hr; // Get the media type from the SampleGrabber DirectShowLib.AMMediaType media = new DirectShowLib.AMMediaType(); hr = sampGrabber.GetConnectedMediaType(media); hr = sampGrabber.SetMediaType(media); DsError.ThrowExceptionForHR(hr); try { if ((media.formatType != FormatType.VideoInfo) || (media.formatPtr == IntPtr.Zero)) { throw new NotSupportedException("Unknown Grabber Media Format"); } // Get the struct DirectShowLib.VideoInfoHeader videoInfoHeader = new DirectShowLib.VideoInfoHeader(); Marshal.PtrToStructure(media.formatPtr, videoInfoHeader); // Grab the size info m_videoWidth = videoInfoHeader.BmiHeader.Width; m_videoHeight = videoInfoHeader.BmiHeader.Height; m_stride = m_videoWidth * (videoInfoHeader.BmiHeader.BitCount / 8); m_ImageSize = m_videoWidth * m_videoHeight * 3; } finally { DirectShowLib.DsUtils.FreeAMMediaType(media); media = null; } }
private void ConfigureSampleGrabber(DirectShowLib.ISampleGrabber sampGrabber) { DirectShowLib.AMMediaType media; int hr; // Set the media type to Video/RBG24 media = new DirectShowLib.AMMediaType(); media.majorType = DirectShowLib.MediaType.Video; media.subType = DirectShowLib.MediaSubType.RGB24; media.formatType = DirectShowLib.FormatType.VideoInfo; hr = sampGrabber.SetMediaType(media); DsError.ThrowExceptionForHR(hr); DirectShowLib.DsUtils.FreeAMMediaType(media); media = null; // Configure the samplegrabber hr = sampGrabber.SetCallback(this, 1); DsError.ThrowExceptionForHR(hr); }
private void SetupGraph(Control hWin, string filename) { pGraphBuilder = (DirectShowLib.IGraphBuilder) new FilterGraph(); pMediaControl = (DirectShowLib.IMediaControl)pGraphBuilder; pVideoWindow = (DirectShowLib.IVideoWindow)pGraphBuilder; pVideoFrameStep = (DirectShowLib.IVideoFrameStep)pGraphBuilder; // video frame... pMediaPosition = (DirectShowLib.IMediaPosition)pGraphBuilder; //DirectShowLib.IBaseFilter pBaseFilter = (DirectShowLib.IBaseFilter)pGraphBuilder; //pMediaSeeking = (DirectShowLib.IMediaSeeking)pGraphBuilder; //pMediaSeeking.SetPositions(5000, AMSeekingSeekingFlags.AbsolutePositioning, 6000, AMSeekingSeekingFlags.AbsolutePositioning); //test DirectShowLib.ICaptureGraphBuilder2 pCaptureGraphBuilder2; DirectShowLib.IBaseFilter pRenderer; DirectShowLib.IVMRFilterConfig9 pIVMRFilterConfig9; DirectShowLib.IVMRWindowlessControl9 pVMRWC9; pCaptureGraphBuilder2 = (DirectShowLib.ICaptureGraphBuilder2) new CaptureGraphBuilder2(); pCaptureGraphBuilder2.SetFiltergraph(pGraphBuilder); // CaptureGraph를 GraphBuilder에 붙인다. //pGraphBuilder.AddFilter(pMediaControl "SDZ 375 Source"); // GraphBuilder에 영상장치필터를 추가한다. pRenderer = (DirectShowLib.IBaseFilter) new DirectShowLib.VideoMixingRenderer9(); // 믹서 필터를 생성 한다. pIVMRFilterConfig9 = (DirectShowLib.IVMRFilterConfig9)pRenderer; // 믹서 필터의 속성을 설정한다. pIVMRFilterConfig9.SetRenderingMode(VMR9Mode.Windowless); pIVMRFilterConfig9.SetNumberOfStreams(2); pVMRWC9 = (DirectShowLib.IVMRWindowlessControl9)pRenderer; // 오버레이 평면의 속성을 설정한다. pVMRWC9.SetVideoClippingWindow(hWin.Handle); pVMRWC9.SetBorderColor(0); pVMRWC9.SetVideoPosition(null, hWin.ClientRectangle); pGraphBuilder.AddFilter(pRenderer, "Video Mixing Renderer"); // GraphBuilder에 믹스 필터를 추가한다. pCaptureGraphBuilder2.RenderStream(null, MediaType.Video, pGraphBuilder, null, pRenderer); // 영상표시를 위한 필터를 설정한다. ///test //sampleGrabber AMMediaType am_media_type = new AMMediaType(); pSampleGrabber = (DirectShowLib.ISampleGrabber) new SampleGrabber(); pSampleGrabberFilter = (DirectShowLib.IBaseFilter)pSampleGrabber; am_media_type.majorType = MediaType.Video; am_media_type.subType = MediaSubType.RGB24; am_media_type.formatType = FormatType.VideoInfo; pSampleGrabber.SetMediaType(am_media_type); //Graph에 sampleGrabber filter를 추가 pGraphBuilder.AddFilter(pSampleGrabberFilter, "Sample Grabber"); pMediaControl.RenderFile(filename); pVideoWindow.put_Owner(hWin.Handle); pVideoWindow.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipSiblings); Rectangle rect = hWin.ClientRectangle; pVideoWindow.SetWindowPosition(0, 0, rect.Right, rect.Bottom); //sampleGrabber2 pSampleGrabber.GetConnectedMediaType(am_media_type); DirectShowLib.VideoInfoHeader pVideoInfoHeader = (DirectShowLib.VideoInfoHeader)Marshal.PtrToStructure(am_media_type.formatPtr, typeof(VideoInfoHeader)); String str = string.Format("size = {0} x {1}", pVideoInfoHeader.BmiHeader.Width, pVideoInfoHeader.BmiHeader.Height); Video_Width = pVideoInfoHeader.BmiHeader.Width; Video_Height = pVideoInfoHeader.BmiHeader.Height; str += string.Format("sample size = {0}", am_media_type.sampleSize); textBox1.Text = str; DsUtils.FreeAMMediaType(am_media_type); //SetBufferSamples를 실행하지 않으면 버퍼로부터 데이터를 얻을 수 없다. //불필요하게 부하를 주고싶지 않은경우 false, 데이터를 얻고싶으면 true pSampleGrabber.SetBufferSamples(true); //play time pMediaPosition = (DirectShowLib.IMediaPosition)pGraphBuilder; double Length; pMediaPosition.get_Duration(out Length); String str2 = string.Format("play time: {0}", Length); textBox1.Text = str2; pMediaPosition.put_CurrentPosition(5.0); //set current Position //2017.05.08 DirectShowLib.IVMRWindowlessControl9 windowlessCtrl = (DirectShowLib.IVMRWindowlessControl9)pRenderer; windowlessCtrl.SetVideoClippingWindow(hWin.Handle); IntPtr lpDib; windowlessCtrl.GetCurrentImage(out lpDib); BitmapInfoHeader head; head = (BitmapInfoHeader)Marshal.PtrToStructure(lpDib, typeof(BitmapInfoHeader)); int width = head.Width; int height = head.Height; int stride = width * (head.BitCount / 8); PixelFormat pixelFormat = PixelFormat.Format24bppRgb; switch (head.BitCount) { case 24: pixelFormat = PixelFormat.Format24bppRgb; break; case 32: pixelFormat = PixelFormat.Format32bppRgb; break; case 48: pixelFormat = PixelFormat.Format48bppRgb; break; default: throw new Exception("Unknown BitCount"); } Bitmap Cap = new Bitmap(width, height, stride, pixelFormat, lpDib); Cap.RotateFlip(RotateFlipType.RotateNoneFlipY); pictureBox1.Image = Cap; }