C# SampleGrabber参数不正确

我在directshow应用程序中使用samplegrabber保存一个jpg文件，这让我头疼不已。但是，当我启动CaptureImage（）函数时，该图运行良好，它到达GetCurrentBuffer并返回“参数不正确”。。hr=-2147024809

        AMMediaType mediaType = new AMMediaType();
        VideoInfoHeader videoInfo = new VideoInfoHeader();

        (pSampleGrabber as ISampleGrabber).GetConnectedMediaType(mediaType);
        videoInfo = (VideoInfoHeader)Marshal.PtrToStructure(mediaType.formatPtr, typeof(VideoInfoHeader));

        int width = videoInfo.BmiHeader.Width;
        int height = videoInfo.BmiHeader.Height;
        int size = videoInfo.BmiHeader.ImageSize;

        DsUtils.FreeAMMediaType(mediaType);

        int hr = 0;
        int bufferSize = 0;
        hr = (pSampleGrabber as ISampleGrabber).GetCurrentBuffer(ref bufferSize, IntPtr.Zero);
        CheckHR(hr, "Could not get buffer size for image capture.");
        IntPtr frameBufferPointer = Marshal.AllocCoTaskMem(bufferSize);
        hr = (pSampleGrabber as ISampleGrabber).GetCurrentBuffer(ref bufferSize, frameBufferPointer);
        CheckHR(hr, "Could not get buffer size for image capture.");

        byte[] frameBuffer = new byte[bufferSize];
        Marshal.Copy(frameBufferPointer, frameBuffer, 0, bufferSize);
        Marshal.FreeCoTaskMem(frameBufferPointer);

        Bitmap frame = new Bitmap(width, height, PixelFormat.Format32bppArgb);
        Rectangle rect = new Rectangle(0, 0, width, height);
        BitmapData bmpData = frame.LockBits(rect, ImageLockMode.ReadWrite, frame.PixelFormat);

        Marshal.Copy(frameBuffer, 0, bmpData.Scan0, bufferSize);
        frame.UnlockBits(bmpData);
        frame.RotateFlip(RotateFlipType.RotateNoneFlipY);

        if (format == "PAL" || format == "NTSC" || format == "NTSC32")
        {
            Bitmap sdBitmap = new Bitmap(width, height);
            Graphics g = Graphics.FromImage((System.Drawing.Image)sdBitmap);
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            g.DrawImage(frame, 0, 0, width, height);
            g.Dispose();
            frame = sdBitmap;
            sdBitmap.Dispose();
        }

        EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, (long)100);
        ImageCodecInfo jpegInfo = null;

        foreach (ImageCodecInfo codec in ImageCodecInfo.GetImageEncoders())
        {
            if (codec.MimeType.ToLower() == "image/jpeg")
            {
                jpegInfo = codec;
                break;
            }
        }

        EncoderParameters encoderParam = new EncoderParameters(1);
        encoderParam.Param[0] = qualityParam;
        double timeStamp = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds;

        frame.Save(@"C:\Records\" + timeStamp.ToString() + ".jpg", jpegInfo, encoderParam);
        frame.Dispose();

文件最终保存了下来，如果我取出支票HR检查，但是图像是黑色的，具有正确的宽度和高度，这就是为什么我去检查HR，看它是否健康。显然不是。我在谷歌上搜索，试图找出错误和任何常见问题，但还是撞到了我的头(

下面是我的图表：

        int hr = 0;

        // Graph builder.
        ICaptureGraphBuilder2 pBuilder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
        hr = pBuilder.SetFiltergraph(pGraph);
        CheckHR(hr, "Can't SetFiltergraph.");

        // Add Decklink Video Capture.
        IBaseFilter pDecklinkVideoCapture = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID_DecklinkVideoCapture));
        hr = pGraph.AddFilter(pDecklinkVideoCapture, "Decklink Video Capture");
        CheckHR(hr, "Can't add Decklink Video Capture to graph.");

        // Get Decklink display format.
        Dictionary<string, AMMediaType> formats = GetDisplayFormat(pDecklinkVideoCapture);
        hr = (DsFindPin.ByName(pDecklinkVideoCapture, "Capture") as IAMStreamConfig).SetFormat(formats[format]);
        CheckHR(hr, "Can't set video format on Decklink Video Capture.");

        // Add Intel® Media SDK H.264 Encoder.
        IBaseFilter pIntelMediaSDKH264Encoder = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID_IntelMediaSDKH264Encoder));
        hr = pGraph.AddFilter(pIntelMediaSDKH264Encoder, "Intel® Media SDK H.264 Encoder");
        CheckHR(hr, "Can't add Intel® Media SDK H.264 Encoder to graph.");

        // Add Intel® Media SDK MP4 Muxer.
        IBaseFilter pIntelMediaSDKMP4Muxer = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID_IntelMediaSDKMP4Muxer));
        hr = pGraph.AddFilter(pIntelMediaSDKMP4Muxer, "Intel® Media SDK MP4 Muxer");
        CheckHR(hr, "Can't add Intel® Media SDK MP4 Muxer to graph.");

        // Add File writer.
        IBaseFilter pFilewriter = (IBaseFilter)new FileWriter();
        hr = pGraph.AddFilter(pFilewriter, "File writer");
        CheckHR(hr, "Can't add File writer to graph");

        // Set destination filename.
        IFileSinkFilter pFilewriter_sink = pFilewriter as IFileSinkFilter;

        if (pFilewriter_sink == null)
        {
            CheckHR(unchecked((int)0x80004002), "Can't get IFileSinkFilter");
        }

        hr = pFilewriter_sink.SetFileName(destination, null);
        CheckHR(hr, "Can't set filename.");

        // Add Smart Tee.
        IBaseFilter pSmartTee = (IBaseFilter)new SmartTee();
        hr = pGraph.AddFilter(pSmartTee, "Smart Tee");
        CheckHR(hr, "Can't add Smart Tee to graph.");

        // Add AVI Decompressor.
        IBaseFilter pAVIDecompressor2 = (IBaseFilter)new AVIDec();
        hr = pGraph.AddFilter(pAVIDecompressor2, "AVI Decompressor");
        CheckHR(hr, "Can't add AVI Decompressor to graph.");

        // Add SampleGrabber.
        pSampleGrabber = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID_SampleGrabber));
        hr = pGraph.AddFilter(pSampleGrabber, "SampleGrabber");
        CheckHR(hr, "Can't add SampleGrabber to graph.");

        // Set SampleGrabber Media Type.
        AMMediaType pSampleGrabber_pmt = new AMMediaType();
        pSampleGrabber_pmt.majorType = MediaType.Video;
        pSampleGrabber_pmt.subType = new Guid("{43594448-0000-0010-8000-00AA00389B71}");
        pSampleGrabber_pmt.formatType = FormatType.VideoInfo;
        VideoInfoHeader pSampleGrabber_format = new VideoInfoHeader();
        pSampleGrabber_pmt.formatPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(pSampleGrabber_format));
        Marshal.StructureToPtr(pSampleGrabber_format, pSampleGrabber_pmt.formatPtr, false);
        hr = ((ISampleGrabber)pSampleGrabber).SetMediaType(pSampleGrabber_pmt);
        DsUtils.FreeAMMediaType(pSampleGrabber_pmt);
        CheckHR(hr, "Can't set media type to sample grabber.");

        // Add Null Renderer.
        IBaseFilter pNullRenderer = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID_NullRenderer));
        hr = pGraph.AddFilter(pNullRenderer, "Null Renderer");
        CheckHR(hr, "Can't add Null Renderer to graph.");

        // Connect Decklink Video Capture and Smart Tee.
        hr = pGraph.ConnectDirect(GetPin(pDecklinkVideoCapture, "Capture"), GetPin(pSmartTee, "Input"), null);
        CheckHR(hr, "Can't connect Decklink Video Capture and Smart Tee.");

        // Connect Smart Tee and AVI Decompressor.
        hr = pGraph.ConnectDirect(GetPin(pSmartTee, "Capture"), GetPin(pAVIDecompressor2, "XForm In"), null);
        CheckHR(hr, "Can't connect Smart Tee and AVI Decompressor.");

        // Connect AVI Decompressor and Intel® Media SDK H.264 Encoder.
        hr = pGraph.ConnectDirect(GetPin(pAVIDecompressor2, "XForm Out"), GetPin(pIntelMediaSDKH264Encoder, "In"), null);
        CheckHR(hr, "Can't connect AVI Decompressor and Intel® Media SDK H.264 Encoder.");

        // Connect Intel® Media SDK H.264 Encoder and Intel® Media SDK MP4 Muxer.
        hr = pGraph.ConnectDirect(GetPin(pIntelMediaSDKH264Encoder, "Out"), GetPin(pIntelMediaSDKMP4Muxer, "Input 0"), null);
        CheckHR(hr, "Can't connect Intel® Media SDK H.264 Encoder and Intel® Media SDK MP4 Muxer.");

        // Connect Intel® Media SDK MP4 Muxer and File writer.
        hr = pGraph.ConnectDirect(GetPin(pIntelMediaSDKMP4Muxer, "Output"), GetPin(pFilewriter, "in"), null);
        CheckHR(hr, "Can't connect Intel® Media SDK MP4 Muxer and File writer.");

        // Connect Smart Tee and SampleGrabber.
        hr = pGraph.ConnectDirect(GetPin(pSmartTee, "Preview"), GetPin(pSampleGrabber, "Input"), null);
        CheckHR(hr, "Can't connect Smart Tee and SampleGrabber.");

        // Connect SampleGrabber and Null Renderer.
        hr = pGraph.ConnectDirect(GetPin(pSampleGrabber, "Output"), GetPin(pNullRenderer, "In"), null);
        CheckHR(hr, "Can't connect SampleGrabber and Null Renderer.");

int hr=0；
//图形生成器。
ICaptureGraphBuilder2 pBuilder=（ICaptureGraphBuilder2）新CaptureGraphBuilder2（）；
hr=pBuilder.SetFiltergraph（pGraph）；
检查hr（hr，“无法设置FilterGraph.”）；
//添加Decklink视频捕获。
IBaseFilter pDecklinkVideoCapture=（IBaseFilter）Activator.CreateInstance（Type.GetTypeFromCLSID（CLSID_DecklinkVideoCapture））；
hr=pGraph.AddFilter（pDecklinkVideoCapture，“Decklink视频捕获”）；
选中hr（hr，“无法将Decklink视频捕获添加到图表中”）；
//获取链接显示格式。
字典格式=GetDisplayFormat（PDECKlingVideoCapture）；
hr=（DsFindPin.ByName（pDecklinkVideoCapture，“Capture”）作为IAMStreamConfig.SetFormat（formats[format]）；
选中hr（hr，“无法在Decklink视频捕获上设置视频格式”）；
//添加Intel®Media SDK H.264编码器。
IBaseFilter PintelMediaSDKH264编码器=（IBaseFilter）Activator.CreateInstance（Type.GetTypeFromCLSID（CLSID_IntelMediaSDKH264Encoder））；
hr=pGraph.AddFilter（PintelMediaSDKH264编码器，“英特尔®媒体SDK H.264编码器”）；
检查hr（hr，“无法将Intel®Media SDK H.264编码器添加到图形中”）；
//添加“英特尔®媒体SDK MP4复用器”。
IBaseFilter pIntelMediaSDKMP4Muxer=（IBaseFilter）Activator.CreateInstance（Type.GetTypeFromCLSID（CLSID_IntelMediaSDKMP4Muxer））；
hr=pGraph.AddFilter（pIntelMediaSDKMP4Muxer，“英特尔®媒体SDK MP4 Muxer”）；
选中hr（hr，“无法将Intel®Media SDK MP4 Muxer添加到图形中”）；
//添加文件编写器。
IBaseFilter pFilewriter=（IBaseFilter）new FileWriter（）；
hr=pGraph.AddFilter（pFilewriter，“文件编写器”）；
CheckHR（hr，“无法将文件写入器添加到图形”）；
//设置目标文件名。
IFileSinkFilter pFilewriter_sink=pFilewriter作为IFileSinkFilter；
if（pFilewriter\u sink==null）
{
CheckHR（未选中（（int）0x80004002），“无法获取IFileSinkFilter”）；
}
hr=pFilewriter\u sink.SetFileName（目的地，null）；
选中hr（hr，“无法设置文件名”）；
//添加智能T恤。
IBaseFilter pSmartTee=（IBaseFilter）新智能TEE（）；
hr=pGraph.AddFilter（pSmartTee，“智能Tee”）；
选中hr（hr，“无法将智能t形三通添加到图形中”）；
//添加AVI解压器。
IBaseFilter pAVIDecompressor2=（IBaseFilter）新AVIDec（）；
hr=pGraph.AddFilter（pAVIDecompressor2，“AVI解压器”）；
CheckHR（hr，“无法将AVI解压缩程序添加到图形中”）；
//添加采样捕获器。
pSampleGrabber=（IBaseFilter）Activator.CreateInstance（Type.GetTypeFromCLSID（CLSID_SampleGrabber））；
hr=pGraph.AddFilter（pSampleGrabber，“SampleGrabber”）；
检查hr（hr，“无法将SampleGrabber添加到图形中”）；
//设置SampleGrabber介质类型。
AMMediaType pSampleGrabber_pmt=新AMMediaType（）；
pSampleGrabber_pmt.majorType=MediaType.Video；
pSampleGrabber_pmt.subType=新Guid（{4359448-0000-0010-8000-00AA00389B71}）；
pSampleGrabber\u pmt.formatType=formatType.VideoInfo；
VideoInfoHeader pSampleGrabber_format=新的VideoInfoHeader（）；
pSampleGrabber_pmt.formatPtr=Marshal.alloctaskmem（Marshal.SizeOf（pSampleGrabber_格式））；
Marshal.StructureToPtr（pSampleGrabber\u格式，pSampleGrabber\u pmt.formatPtr，false）；
hr=（（ISampleGrabber）pSampleGrabber）.SetMediaType（pSampleGrabber\u pmt）；
DsUtils.FreeAMMediaType（pSampleGrabber\u pmt）；
检查hr（hr，“无法将介质类型设置为样本抓取器”）；
//添加空渲染器。
IBaseFilter pNullRenderer=（IBaseFilter）Activator.CreateInstance（Type.GetTypeFromCLSID（CLSID_NullRenderer））；
hr=pGraph.AddFilter（pNullRenderer，“空渲染器”）；
CheckHR（hr，“无法将空渲染器添加到图形中”）；
//连接Decklink视频捕获和智能T恤。
hr=pGraph.ConnectDirect（GetPin（pDecklinkVideoCapture，“Capture”）、GetPin（pSmartTee，“Input”）、null；
检查hr（hr，“无法连接Decklink视频捕获和智能t恤”）；
//连接智能三通和AVI减压器。
hr=pGraph.ConnectDirect（GetPin（pSmartTee，“捕获”），GetPin（pAVIDecompressor2，“变换输入”），null；
检查hr（hr，“无法连接智能t形三通和AVI减压器”）；
//连接AVI解压器和Intel®Media SDK H.264编码器。
hr=pGraph.ConnectDirect（GetPin（pAVIDecompressor2，“变换输出”）、GetPin（pintelmediasdkh264编码器，“输入”）、null；
检查hr（hr，“无法连接AVI解压缩程序和英特尔®媒体SDK H.264编码器”）；
//连接英特尔®媒体SDK H.264编码器和英特尔®媒体SDK MP4复用器。
hr=pGraph.ConnectDirect（GetPin（pintelmediasdkh264编码器，“输出”）、GetPin（pIntelMediaSDKMP4Muxer，“输入0”）、null；
选中hr（hr，“无法连接英特尔®媒体SDK H.264编码器和英特尔®媒体SDK MP4复用器”）；
//连接Intel®Media SDK MP4多路复用器和文件写入器。
hr=pGraph.ConnectDirect（GetPin（pIntelMediaSDKMP4Muxer，“输出”）、GetPin（pFilewriter，“输入”）、null；
选中hr（hr，“无法连接英特尔®媒体SDK MP4复用器和文件写入器”）；
//连接智能T形三通和取样装置。
hr=pGraph.ConnectDirect（GetPin（pSmartTee，“预览”），GetPin（pSampleGrabber，“输入”），null；