Implementing C# Marshal.PtrToStructure () in LabVIEW

[Eugen_Graf]

Hello!

I try to implement following C# Function in LabVIEW:

        // Set the Framerate, and video size
        private void SetConfigParms(IPin pStill, int iWidth, int iHeight, short iBPP)
        {
            int hr;
            AMMediaType media;
            VideoInfoHeader v;

            IAMStreamConfig videoStreamConfig = pStill as IAMStreamConfig;

            // Get the existing format block
            hr = videoStreamConfig.GetFormat(out media);
            DsError.ThrowExceptionForHR(hr);

            try
            {
                // copy out the videoinfoheader
                v = new VideoInfoHeader();
                Marshal.PtrToStructure( media.formatPtr, v );

                // if overriding the width, set the width
                if (iWidth > 0)
                {
                    v.BmiHeader.Width = iWidth;
                }

                // if overriding the Height, set the Height
                if (iHeight > 0)
                {
                    v.BmiHeader.Height = iHeight;
                }

                // if overriding the bits per pixel
                if (iBPP > 0)
                {
                    v.BmiHeader.BitCount = iBPP;
                }

                // Copy the media structure back
                Marshal.StructureToPtr( v, media.formatPtr, false );

                // Set the new format
                hr = videoStreamConfig.SetFormat( media );
                DsError.ThrowExceptionForHR( hr );
            }
            finally
            {
                DsUtils.FreeAMMediaType(media);
                media = null;
            }
        }

 There is a Function:

Marshal.PtrToStructure( media.formatPtr, v );

Here you can see what I just made:

Do anybody know how I can implement the function?

Thank you, Eugen Graf

[Eugen_Graf]

Nobody can help?

I'm developing on the Open Source Project "LabVIEW Webcam Library". If anybody's interest for it, so notify me about it.

[Mister_DJ]

While I lack the knowledge to help develop this, I am extrememly interested in this, as I am about to start a project where I will need to view the live footage  from a camera. Are you finished developing this?