BitMiracle.LibJpeg.Classic.Internal.jpeg_marker_writer.emit_sos C# (CSharp) Method

        private void emit_sos()
        {
            emit_marker(JPEG_MARKER.SOS);

            emit_2bytes(2 * m_cinfo.m_comps_in_scan + 2 + 1 + 3); /* length */

            emit_byte(m_cinfo.m_comps_in_scan);

            for (int i = 0; i < m_cinfo.m_comps_in_scan; i++)
            {
                int componentIndex = m_cinfo.m_cur_comp_info[i];
                jpeg_component_info compptr = m_cinfo.Component_info[componentIndex];
                emit_byte(compptr.Component_id);

                /* We emit 0 for unused field(s); this is recommended by the P&M text
                 * but does not seem to be specified in the standard.
                 */

                /* DC needs no table for refinement scan */
                int td = (m_cinfo.m_Ss == 0 && m_cinfo.m_Ah == 0) ? compptr.Dc_tbl_no : 0;

                /* AC needs no table when not present */
                int ta = (m_cinfo.m_Se != 0) ? compptr.Ac_tbl_no : 0;

                emit_byte((td << 4) + ta);
            }

            emit_byte(m_cinfo.m_Ss);
            emit_byte(m_cinfo.m_Se);
            emit_byte((m_cinfo.m_Ah << 4) + m_cinfo.m_Al);
        }