text: /* +---------------------------------------------------------------------------+
     |                     Mobile Robot Programming Toolkit (MRPT)               |
     |                          http://www.mrpt.org/                             |
     |                                                                           |
     | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file        |
     | See: http://www.mrpt.org/Authors - All rights reserved.                   |
     | Released under BSD License. See details in http://www.mrpt.org/License    |
     +---------------------------------------------------------------------------+ */
  
  #define JPEG_INTERNALS
  #include "jinclude.h"
  #include "mrpt_jpeglib.h"
  
  
  /*
   * Master selection of compression modules.
   * This is done once at the start of processing an image.  We determine
   * which modules will be used and give them appropriate initialization calls.
   */
  
  GLOBAL(void)
  jinit_compress_master (j_compress_ptr cinfo)
  {
    /* Initialize master control (includes parameter checking/processing) */
    jinit_c_master_control(cinfo, FALSE /* full compression */);
  
    /* Preprocessing */
    if (! cinfo->raw_data_in) {
      jinit_color_converter(cinfo);
      jinit_downsampler(cinfo);
      jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */);
    }
    /* Forward DCT */
    jinit_forward_dct(cinfo);
    /* Entropy encoding: either Huffman or arithmetic coding. */
    if (cinfo->arith_code) {
      ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
    } else {
      if (cinfo->progressive_mode) {
  #ifdef C_PROGRESSIVE_SUPPORTED
        jinit_phuff_encoder(cinfo);
  #else
        ERREXIT(cinfo, JERR_NOT_COMPILED);
  #endif
      } else
        jinit_huff_encoder(cinfo);
    }
  
    /* Need a full-image coefficient buffer in any multi-pass mode. */
    jinit_c_coef_controller(cinfo,
  		(boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding));
    jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */);
  
    jinit_marker_writer(cinfo);
  
    /* We can now tell the memory manager to allocate virtual arrays. */
    (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
  
    /* Write the datastream header (SOI) immediately.
     * Frame and scan headers are postponed till later.
     * This lets application insert special markers after the SOI.
     */
    (*cinfo->marker->write_file_header) (cinfo);
  }
  