compiler/libjpeg/main/jcodec.c

   1 /*
   2     $Id$
   3 */
   4
   5 /*
   6  * jcodec.c
   7  *
   8  * Copyright (C) 1998, Thomas G. Lane.
   9  * This file is part of the Independent JPEG Group's software.
  10  * For conditions of distribution and use, see the accompanying README file.
  11  *
  12  * This file contains utility functions for the JPEG codec(s).
  13  */
  14
  15 #define JPEG_INTERNALS
  16 #include "jinclude.h"
  17 #include "jpeglib.h"
  18 #include "jlossy.h"
  19 #include "jlossls.h"
  20
  21
  22 /*
  23  * Initialize the compression codec.
  24  * This is called only once, during master selection.
  25  */
  26
  27 JGLOBAL(void)
  28 jinit_c_codec (j_compress_ptr cinfo)
  29 {
  30   if (cinfo->process == JPROC_LOSSLESS) {
  31 #ifdef C_LOSSLESS_SUPPORTED
  32     jinit_lossless_c_codec(cinfo);
  33 #else
  34     ERREXIT(cinfo, JERR_NOT_COMPILED);
  35 #endif
  36   } else
  37     jinit_lossy_c_codec(cinfo);
  38 }
  39
  40
  41 /*
  42  * Initialize the decompression codec.
  43  * This is called only once, during master selection.
  44  */
  45
  46 JGLOBAL(void)
  47 jinit_d_codec (j_decompress_ptr cinfo)
  48 {
  49   if (cinfo->process == JPROC_LOSSLESS) {
  50 #ifdef D_LOSSLESS_SUPPORTED
  51     jinit_lossless_d_codec(cinfo);
  52 #else
  53     ERREXIT(cinfo, JERR_NOT_COMPILED);
  54 #endif
  55   } else
  56     jinit_lossy_d_codec(cinfo);
  57 }