Hjg.Pngcs.PngWriter.FilterRowPaeth C# (CSharp) Method

        private void FilterRowPaeth()
        {
            int i, j, imax;
            imax = ImgInfo.BytesPerRow;
            for (j = 1 - ImgInfo.BytesPixel, i = 1; i <= imax; i++, j++) {
                rowbfilter[i] = (byte)(rowb[i] - PngHelperInternal.FilterPaethPredictor(j > 0 ? rowb[j] : (byte)0,
                        rowbprev[i], j > 0 ? rowbprev[j] : (byte)0));
            }
        }