BitMiracle.LibJpeg.Classic.jpeg_compress_struct.jinit_compress_master C# (CSharp) Method

        private void jinit_compress_master()
        {
            /* Sanity check on image dimensions */
            if (m_image_height <= 0 || m_image_width <= 0 || m_input_components <= 0)
                ERREXIT(J_MESSAGE_CODE.JERR_EMPTY_IMAGE);

            /* Initialize master control (includes parameter checking/processing) */
            jinit_c_master_control(false /* full compression */);

            /* Preprocessing */
            if (!m_raw_data_in)
            {
                m_cconvert = new jpeg_color_converter(this);
                m_downsample = new jpeg_downsampler(this);
                m_prep = new jpeg_c_prep_controller(this);
            }

            /* Forward DCT */
            m_fdct = new jpeg_forward_dct(this);

            /* Entropy encoding: either Huffman or arithmetic coding. */
            if (arith_code)
                m_entropy = new arith_entropy_encoder(this);
            else
                m_entropy = new huff_entropy_encoder(this);

            /* Need a full-image coefficient buffer in any multi-pass mode. */
            m_coef = new my_c_coef_controller(this, (bool)(m_num_scans > 1 || m_optimize_coding));
            jinit_c_main_controller(false /* never need full buffer here */);
            m_marker = new jpeg_marker_writer(this);

            /* Write the datastream header (SOI) immediately.
            * Frame and scan headers are postponed till later.
            * This lets application insert special markers after the SOI.
            */
            m_marker.write_file_header();
        }