BitMiracle.LibJpeg.Classic.Internal.jpeg_comp_master.prepare_for_huff_opt_pass C# (CSharp) 메소드

        private bool prepare_for_huff_opt_pass()
        {
            /* Do Huffman optimization for a scan after the first one. */
            select_scan_parameters();
            per_scan_setup();

            if (m_cinfo.m_Ss != 0 || m_cinfo.m_Ah == 0)
            {
                m_cinfo.m_entropy.start_pass(true);
                m_cinfo.m_coef.start_pass(J_BUF_MODE.JBUF_CRANK_DEST);
                m_call_pass_startup = false;
                return false;
            }

            /* Special case: Huffman DC refinement scans need no Huffman table
            * and therefore we can skip the optimization pass for them.
            */
            m_pass_type = c_pass_type.output_pass;
            m_pass_number++;
            return true;
        }