www.pudn.com > JM60.ZIP > macroblock.h

/* 
*********************************************************************** 
* 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 macroblock.h 
 * 
 * \author 
 *  Inge Lille-Langøy                
 *  Copyright (C) 1999  Telenor Satellite Services, Norway 
 ************************************************************************ 
 */ 
 
#ifndef _MACROBLOCK_H_ 
#define _MACROBLOCK_H_ 
 
 
//! single scan pattern 
const byte SNGL_SCAN[16][2] = 
{ 
  {0,0},{1,0},{0,1},{0,2}, 
  {1,1},{2,0},{3,0},{2,1}, 
  {1,2},{0,3},{1,3},{2,2}, 
  {3,1},{3,2},{2,3},{3,3} 
}; 
 
//! field scan pattern 
const byte FIELD_SCAN[16][2] = 
{ 
  {0,0},{0,1},{1,0},{0,2}, 
  {0,3},{1,1},{1,2},{1,3}, 
  {2,0},{2,1},{2,2},{2,3}, 
  {3,0},{3,1},{3,2},{3,3} 
}; 
 
 
//! gives CBP value from codeword number, both for intra and inter 
const byte NCBP[48][2]= 
{ 
  {47, 0},{31,16},{15, 1},{ 0, 2},{23, 4},{27, 8},{29,32},{30, 3},{ 7, 5},{11,10},{13,12},{14,15}, 
  {39,47},{43, 7},{45,11},{46,13},{16,14},{ 3, 6},{ 5, 9},{10,31},{12,35},{19,37},{21,42},{26,44}, 
  {28,33},{35,34},{37,36},{42,40},{44,39},{ 1,43},{ 2,45},{ 4,46},{ 8,17},{17,18},{18,20},{20,24}, 
  {24,19},{ 6,21},{ 9,26},{22,28},{25,23},{32,27},{33,29},{34,30},{36,22},{40,25},{38,38},{41,41}, 
}; 
 
//! used to control block sizes : Not used/16x16/16x8/8x16/8x8/8x4/4x8/4x4 
const int BLOCK_STEP[8][2]= 
{ 
  {0,0},{4,4},{4,2},{2,4},{2,2},{2,1},{1,2},{1,1} 
}; 
 
//! QP dependent scale factor for coefficients 
const int JQ1[]= 
{ 
  3881,  4351, 4890, 5481,  6154,  6914,  7761,  8718, 
  9781, 10987,12339,13828, 15523, 17435, 19561, 21873, 
  24552,27656,30847,34870, 38807, 43747, 49103, 54683, 
  61694,68745,77615,89113,100253,109366,126635,141533, 
}; 
//! Dequantization coefficients 
const int dequant_coef[6][4][4] = { 
  {{10, 13, 10, 13},{ 13, 16, 13, 16},{10, 13, 10, 13},{ 13, 16, 13, 16}}, 
  {{11, 14, 11, 14},{ 14, 18, 14, 18},{11, 14, 11, 14},{ 14, 18, 14, 18}}, 
  {{13, 16, 13, 16},{ 16, 20, 16, 20},{13, 16, 13, 16},{ 16, 20, 16, 20}}, 
  {{14, 18, 14, 18},{ 18, 23, 18, 23},{14, 18, 14, 18},{ 18, 23, 18, 23}}, 
  {{16, 20, 16, 20},{ 20, 25, 20, 25},{16, 20, 16, 20},{ 20, 25, 20, 25}}, 
  {{18, 23, 18, 23},{ 23, 29, 23, 29},{18, 23, 18, 23},{ 23, 29, 23, 29}} 
}; 
const int JQ[32] = 
{ 
   620,  553, 492,  439,   391, 348, 310,  276, 
   246,  219, 195,  174,   155, 138, 123,  110, 
    98,   87,  78,   69,    62,  55,  49,   44, 
    39,   35,  31,   27,    24,  22,  19,   17, 
}; 
// gives chroma QP from QP 
 
const byte QP_SCALE_CR[52]= 
{ 
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11, 
   12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27, 
   28,29,29,30,31,32,32,33,34,34,35,35,36,36,37,37, 
   37,38,38,38,39,39,39,39 
 
}; 
#endif