image.h

MPEG-4编解码的实现(包括MPEG4视音频编解码)

/*
***********************************************************************
* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2001, International Telecommunications Union, Geneva
*
* DISCLAIMER OF WARRANTY
*
* These software programs are available to the user without any
* license fee or royalty on an "as is" basis. The ITU disclaims
* any and all warranties, whether express, implied, or
* statutory, including any implied warranties of merchantability
* or of fitness for a particular purpose.  In no event shall the
* contributor or the ITU be liable for any incidental, punitive, or
* consequential damages of any kind whatsoever arising from the
* use of these programs.
*
* This disclaimer of warranty extends to the user of these programs
* and user's customers, employees, agents, transferees, successors,
* and assigns.
*
* The ITU does not represent or warrant that the programs furnished
* hereunder are free of infringement of any third-party patents.
* Commercial implementations of ITU-T Recommendations, including
* shareware, may be subject to royalty fees to patent holders.
* Information regarding the ITU-T patent policy is available from
* the ITU Web site at http://www.itu.int.
*
* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE ITU-T PATENT POLICY.
************************************************************************
*/

/*!
 ************************************************************************
 * \file image.h
 *
 * \author
 *  Inge Lille-Lang鴜               <[e-mail]>
 *  Copyright (C) 1999  Telenor Satellite Services, Norway
 ************************************************************************
 */
#ifndef _IMAGE_H_
#define _IMAGE_H_

//! QP dependent filter strenght clipping for loopfilter
const byte FILTER_STR[32][4] =
{
  {0,0,0,0},{0,0,0,0},{0,0,0,0},{0,0,0,0},{0,0,0,0},{0,0,0,0},{0,0,0,0},{0,0,0,0},
  {0,0,0,0},{0,0,0,1},{0,0,0,1},{0,0,1,1},{0,0,1,1},{0,0,1,1},{0,1,1,1},{0,1,1,1},
  {0,1,1,1},{0,1,1,2},{0,1,1,2},{0,1,1,2},{0,1,1,2},{0,1,2,3},{0,1,2,3},{0,1,2,3},
  {0,1,2,4},{0,2,3,4},{0,2,3,5},{0,2,3,5},{0,2,3,5},{0,2,4,7},{0,3,5,8},{0,3,5,9},
};

//! TAPs used in the oneforthpix()routine
const int ONE_FOURTH_TAP[3][2] =
{
  {20,20},
  {-5,-4},
  { 1, 0},
};

const byte LIM[32] =
{
   7,  8,  9, 10, 11, 12, 14, 16,
  18, 20, 22, 25, 28, 31, 35, 39,
  44, 49, 55, 62, 69, 78, 88, 98,
  110,124,139,156,175,197,221,248
};

#endif