BitMiracle.LibJpeg.Classic.Internal.my_upsampler.int_upsample C# (CSharp) Method

        private void int_upsample(ref ComponentBuffer input_data)
        {
            ComponentBuffer output_data = m_color_buf[m_currentComponent];
            int h_expand = m_h_expand[m_currentComponent];
            int v_expand = m_v_expand[m_currentComponent];

            int inrow = 0;
            int outrow = 0;
            while (outrow < m_cinfo.m_max_v_samp_factor)
            {
                /* Generate one output row with proper horizontal expansion */
                int row = m_upsampleRowOffset + inrow;
                for (int col = 0; col < m_cinfo.m_output_width; col++)
                {
                    byte invalue = input_data[row][col]; /* don't need GETJSAMPLE() here */
                    int outIndex = 0;
                    for (int h = h_expand; h > 0; h--)
                    {
                        output_data[outrow][outIndex] = invalue;
                        outIndex++;
                    }
                }
                
                /* Generate any additional output rows by duplicating the first one */
                if (v_expand > 1)
                {
                    JpegUtils.jcopy_sample_rows(output_data, outrow, output_data, 
                        outrow + 1, v_expand - 1, m_cinfo.m_output_width);
                }

                inrow++;
                outrow += v_expand;
            }
        }
    }