Hjg.Pngcs.PngReader.UnfilterRowSub C# (CSharp) Method

        private void UnfilterRowSub(int nbytes)
        {
            int i, j;
            for (i = 1; i <= ImgInfo.BytesPixel; i++) {
                rowb[i] = (byte)(rowbfilter[i]);
            }
            for (j = 1, i = ImgInfo.BytesPixel + 1; i <= nbytes; i++, j++) {
                rowb[i] = (byte)(rowbfilter[i] + rowb[j]);
            }
        }