libfaad2/codebook/hcb_8.h

   1 /*
   2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
   3 ** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
   4 **
   5 ** This program is free software; you can redistribute it and/or modify
   6 ** it under the terms of the GNU General Public License as published by
   7 ** the Free Software Foundation; either version 2 of the License, or
   8 ** (at your option) any later version.
   9 **
  10 ** This program is distributed in the hope that it will be useful,
  11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ** GNU General Public License for more details.
  14 **
  15 ** You should have received a copy of the GNU General Public License
  16 ** along with this program; if not, write to the Free Software
  17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 **
  19 ** Any non-GPL usage of this software or parts of this software is strictly
  20 ** forbidden.
  21 **
  22 ** Commercial non-GPL licensing of this software is possible.
  23 ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
  24 **
  25 ** $Id: hcb_8.h,v 1.3 2003/09/09 18:12:01 menno Exp $
  26 **/
  27
  28 /* 2-step huffman table HCB_8 */
  29
  30
  31 /* 1st step: 5 bits
  32  *           2^5 = 32 entries
  33  *
  34  * Used to find offset into 2nd step table and number of extra bits to get
  35  */
  36 static hcb hcb8_1[] = {
  37     /* 3 bit codeword */
  38     { /* 00000 */ 0, 0 },
  39     { /*       */ 0, 0 },
  40     { /*       */ 0, 0 },
  41     { /*       */ 0, 0 },
  42
  43     /* 4 bit codewords */
  44     { /* 00100 */ 1, 0 },
  45     { /*       */ 1, 0 },
  46     { /* 00110 */ 2, 0 },
  47     { /*       */ 2, 0 },
  48     { /* 01000 */ 3, 0 },
  49     { /*       */ 3, 0 },
  50     { /* 01010 */ 4, 0 },
  51     { /*       */ 4, 0 },
  52     { /* 01100 */ 5, 0 },
  53     { /*       */ 5, 0 },
  54
  55     /* 5 bit codewords */
  56     { /* 01110 */ 6, 0 },
  57     { /* 01111 */ 7, 0 },
  58     { /* 10000 */ 8, 0 },
  59     { /* 10001 */ 9, 0 },
  60     { /* 10010 */ 10, 0 },
  61     { /* 10011 */ 11, 0 },
  62     { /* 10100 */ 12, 0 },
  63
  64     /* 6 bit codewords */
  65     { /* 10101 */ 13, 1 },
  66     { /* 10110 */ 15, 1 },
  67     { /* 10111 */ 17, 1 },
  68     { /* 11000 */ 19, 1 },
  69     { /* 11001 */ 21, 1 },
  70
  71     /* 7 bit codewords */
  72     { /* 11010 */ 23, 2 },
  73     { /* 11011 */ 27, 2 },
  74     { /* 11100 */ 31, 2 },
  75
  76     /* 7/8 bit codewords */
  77     { /* 11101 */ 35, 3 },
  78
  79     /* 8 bit codewords */
  80     { /* 11110 */ 43, 3 },
  81
  82     /* 8/9/10 bit codewords */
  83     { /* 11111 */ 51, 5 }
  84 };
  85
  86 /* 2nd step table
  87  *
  88  * Gives size of codeword and actual data (x,y,v,w)
  89  */
  90 static hcb_2_pair hcb8_2[] = {
  91     /* 3 bit codeword */
  92     { 3,  1,  1 },
  93
  94     /* 4 bit codewords */
  95     { 4,  2,  1 },
  96     { 4,  1,  0 },
  97     { 4,  1,  2 },
  98     { 4,  0,  1 },
  99     { 4,  2,  2 },
 100
 101     /* 5 bit codewords */
 102     { 5,  0,  0 },
 103     { 5,  2,  0 },
 104     { 5,  0,  2 },
 105     { 5,  3,  1 },
 106     { 5,  1,  3 },
 107     { 5,  3,  2 },
 108     { 5,  2,  3 },
 109
 110     /* 6 bit codewords */
 111     { 6,  3,  3 },
 112     { 6,  4,  1 },
 113     { 6,  1,  4 },
 114     { 6,  4,  2 },
 115     { 6,  2,  4 },
 116     { 6,  3,  0 },
 117     { 6,  0,  3 },
 118     { 6,  4,  3 },
 119     { 6,  3,  4 },
 120     { 6,  5,  2 },
 121
 122     /* 7 bit codewords */
 123     { 7,  5,  1 },
 124     { 7,  2,  5 },
 125     { 7,  1,  5 },
 126     { 7,  5,  3 },
 127     { 7,  3,  5 },
 128     { 7,  4,  4 },
 129     { 7,  5,  4 },
 130     { 7,  0,  4 },
 131     { 7,  4,  5 },
 132     { 7,  4,  0 },
 133     { 7,  2,  6 },
 134     { 7,  6,  2 },
 135
 136     /* 7/8 bit codewords */
 137     { 7,  6,  1 }, { 7,  6,  1 },
 138     { 7,  1,  6 }, { 7,  1,  6 },
 139     { 8,  3,  6 },
 140     { 8,  6,  3 },
 141     { 8,  5,  5 },
 142     { 8,  5,  0 },
 143
 144     /* 8 bit codewords */
 145     { 8,  6,  4 },
 146     { 8,  0,  5 },
 147     { 8,  4,  6 },
 148     { 8,  7,  1 },
 149     { 8,  7,  2 },
 150     { 8,  2,  7 },
 151     { 8,  6,  5 },
 152     { 8,  7,  3 },
 153
 154     /* 8/9/10 bit codewords */
 155     { 8,  1,  7 }, { 8,  1,  7 }, { 8,  1,  7 }, { 8,  1,  7 },
 156     { 8,  5,  6 }, { 8,  5,  6 }, { 8,  5,  6 }, { 8,  5,  6 },
 157     { 8,  3,  7 }, { 8,  3,  7 }, { 8,  3,  7 }, { 8,  3,  7 },
 158     { 9,  6,  6 }, { 9,  6,  6 },
 159     { 9,  7,  4 }, { 9,  7,  4 },
 160     { 9,  6,  0 }, { 9,  6,  0 },
 161     { 9,  4,  7 }, { 9,  4,  7 },
 162     { 9,  0,  6 }, { 9,  0,  6 },
 163     { 9,  7,  5 }, { 9,  7,  5 },
 164     { 9,  7,  6 }, { 9,  7,  6 },
 165     { 9,  6,  7 }, { 9,  6,  7 },
 166     { 10,  5,  7 },
 167     { 10,  7,  0 },
 168     { 10,  0,  7 },
 169     { 10,  7,  7 }
 170 };