LitDev.Engines.Capture.SaveSizeInfo C# (CSharp) Method

        private void SaveSizeInfo(ISampleGrabber sampGrabber)
        {
            int hr;

            // Get the media type from the SampleGrabber
            AMMediaType media = new AMMediaType();
            hr = sampGrabber.GetConnectedMediaType( media );
            DsError.ThrowExceptionForHR( hr );

            if( (media.formatType != FormatType.VideoInfo) || (media.formatPtr == IntPtr.Zero) )
            {
                throw new NotSupportedException( "Unknown Grabber Media Format" );
            }

            // Grab the size info
            VideoInfoHeader videoInfoHeader = (VideoInfoHeader) Marshal.PtrToStructure( media.formatPtr, typeof(VideoInfoHeader) );
            m_videoWidth = videoInfoHeader.BmiHeader.Width;
            m_videoHeight = videoInfoHeader.BmiHeader.Height;
            m_stride = m_videoWidth * (videoInfoHeader.BmiHeader.BitCount / 8);

            DsUtils.FreeAMMediaType(media);
            media = null;
        }