// 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 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;
}
