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revision 1.4, Sat Nov 16 23:51:58 2002 UTC revision 1.6, Sat Feb 15 15:22:18 2003 UTC
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1  /*****************************************************************************  /* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
2   *  
3   *  XVID MPEG-4 VIDEO CODEC  /*
4   *  - fast disrete cosine transformation - integer C version   * Disclaimer of Warranty
  *  
  *  These routines are from Independent JPEG Group's free JPEG software  
  *  Copyright (C) 1991-1998, Thomas G. Lane (see the file README.IJG)  
  *  
  *  This file is part of XviD, a free MPEG-4 video encoder/decoder  
  *  
  *  XviD is free software; you can redistribute it and/or modify it  
  *  under the terms of the GNU General Public License as published by  
  *  the Free Software Foundation; either version 2 of the License, or  
  *  (at your option) any later version.  
  *  
  *  This program is distributed in the hope that it will be useful,  
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of  
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  
  *  GNU General Public License for more details.  
  *  
  *  You should have received a copy of the GNU General Public License  
  *  along with this program; if not, write to the Free Software  
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA  
  *  
  *  Under section 8 of the GNU General Public License, the copyright  
  *  holders of XVID explicitly forbid distribution in the following  
  *  countries:  
  *  
  *    - Japan  
  *    - United States of America  
  *  
  *  Linking XviD statically or dynamically with other modules is making a  
  *  combined work based on XviD.  Thus, the terms and conditions of the  
  *  GNU General Public License cover the whole combination.  
  *  
  *  As a special exception, the copyright holders of XviD give you  
  *  permission to link XviD with independent modules that communicate with  
  *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the  
  *  license terms of these independent modules, and to copy and distribute  
  *  the resulting combined work under terms of your choice, provided that  
  *  every copy of the combined work is accompanied by a complete copy of  
  *  the source code of XviD (the version of XviD used to produce the  
  *  combined work), being distributed under the terms of the GNU General  
  *  Public License plus this exception.  An independent module is a module  
  *  which is not derived from or based on XviD.  
  *  
  *  Note that people who make modified versions of XviD are not obligated  
  *  to grant this special exception for their modified versions; it is  
  *  their choice whether to do so.  The GNU General Public License gives  
  *  permission to release a modified version without this exception; this  
  *  exception also makes it possible to release a modified version which  
  *  carries forward this exception.  
5   *   *
6   * $Id$   * These software programs are available to the user without any license fee or
7     * royalty on an "as is" basis.  The MPEG Software Simulation Group disclaims
8     * any and all warranties, whether express, implied, or statuary, including any
9     * implied warranties or merchantability or of fitness for a particular
10     * purpose.  In no event shall the copyright-holder be liable for any
11     * incidental, punitive, or consequential damages of any kind whatsoever
12     * arising from the use of these programs.
13     *
14     * This disclaimer of warranty extends to the user of these programs and user's
15     * customers, employees, agents, transferees, successors, and assigns.
16     *
17     * The MPEG Software Simulation Group does not represent or warrant that the
18     * programs furnished hereunder are free of infringement of any third-party
19     * patents.
20     *
21     * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
22     * are subject to royalty fees to patent holders.  Many of these patents are
23     * general enough such that they are unavoidable regardless of implementation
24     * design.
25   *   *
26   *************************************************************************/   */
27    
28  /* This routine is a slow-but-accurate integer implementation of the  /* This routine is a slow-but-accurate integer implementation of the
29   * forward DCT (Discrete Cosine Transform). Taken from the IJG software   * forward DCT (Discrete Cosine Transform). Taken from the IJG software

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