libfaad2/codebook/hcb_1.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_1.h,v 1.3 2003/09/09 18:12:01 menno Exp $
  26 **/
  27
  28 /* 2-step huffman table HCB_1 */
  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 hcb1_1[] = {
  37     { /* 00000 */ 0, 0 },
  38     { /*       */ 0, 0 },
  39     { /*       */ 0, 0 },
  40     { /*       */ 0, 0 },
  41     { /*       */ 0, 0 },
  42     { /*       */ 0, 0 },
  43     { /*       */ 0, 0 },
  44     { /*       */ 0, 0 },
  45     { /*       */ 0, 0 },
  46     { /*       */ 0, 0 },
  47     { /*       */ 0, 0 },
  48     { /*       */ 0, 0 },
  49     { /*       */ 0, 0 },
  50     { /*       */ 0, 0 },
  51     { /*       */ 0, 0 },
  52     { /*       */ 0, 0 },
  53     { /* 10000 */ 1, 0 },
  54     { /* 10001 */ 2, 0 },
  55     { /* 10010 */ 3, 0 },
  56     { /* 10011 */ 4, 0 },
  57     { /* 10100 */ 5, 0 },
  58     { /* 10101 */ 6, 0 },
  59     { /* 10110 */ 7, 0 },
  60     { /* 10111 */ 8, 0 },
  61
  62     /* 7 bit codewords */
  63     { /* 11000 */ 9,  2 },
  64     { /* 11001 */ 13, 2 },
  65     { /* 11010 */ 17, 2 },
  66     { /* 11011 */ 21, 2 },
  67     { /* 11100 */ 25, 2 },
  68     { /* 11101 */ 29, 2 },
  69
  70     /* 9 bit codewords */
  71     { /* 11110 */ 33, 4 },
  72
  73     /* 9/10/11 bit codewords */
  74     { /* 11111 */ 49, 6 }
  75 };
  76
  77 /* 2nd step table
  78  *
  79  * Gives size of codeword and actual data (x,y,v,w)
  80  */
  81 static hcb_2_quad hcb1_2[] = {
  82     /* 1 bit codeword */
  83     { 1,  0,  0,  0,  0 },
  84
  85     /* 5 bit codewords */
  86     { 5,  1,  0,  0,  0 },
  87     { 5, -1,  0,  0,  0 },
  88     { 5,  0,  0,  0, -1 },
  89     { 5,  0,  1,  0,  0 },
  90     { 5,  0,  0,  0,  1 },
  91     { 5,  0,  0, -1,  0 },
  92     { 5,  0,  0,  1,  0 },
  93     { 5,  0, -1,  0,  0 },
  94
  95     /* 7 bit codewords */
  96     /* first 5 bits: 11000 */
  97     { 7,  1, -1,  0,  0 },
  98     { 7, -1,  1,  0,  0 },
  99     { 7,  0,  0, -1,  1 },
 100     { 7,  0,  1, -1,  0 },
 101     /* first 5 bits: 11001 */
 102     { 7,  0, -1,  1,  0 },
 103     { 7,  0,  0,  1, -1 },
 104     { 7,  1,  1,  0,  0 },
 105     { 7,  0,  0, -1, -1 },
 106     /* first 5 bits: 11010 */
 107     { 7, -1, -1,  0,  0 },
 108     { 7,  0, -1, -1,  0 },
 109     { 7,  1,  0, -1,  0 },
 110     { 7,  0,  1,  0, -1 },
 111     /* first 5 bits: 11011 */
 112     { 7, -1,  0,  1,  0 },
 113     { 7,  0,  0,  1,  1 },
 114     { 7,  1,  0,  1,  0 },
 115     { 7,  0, -1,  0,  1 },
 116     /* first 5 bits: 11100 */
 117     { 7,  0,  1,  1,  0 },
 118     { 7,  0,  1,  0,  1 },
 119     { 7, -1,  0, -1,  0 },
 120     { 7,  1,  0,  0,  1 },
 121     /* first 5 bits: 11101 */
 122     { 7, -1,  0,  0, -1 },
 123     { 7,  1,  0,  0, -1 },
 124     { 7, -1,  0,  0,  1 },
 125     { 7,  0, -1,  0, -1 },
 126
 127     /* 9 bit codeword */
 128     /* first 5 bits: 11110 */
 129     { 9,  1,  1, -1,  0 },
 130     { 9, -1,  1, -1,  0 },
 131     { 9,  1, -1,  1,  0 },
 132     { 9,  0,  1,  1, -1 },
 133     { 9,  0,  1, -1,  1 },
 134     { 9,  0, -1,  1,  1 },
 135     { 9,  0, -1,  1, -1 },
 136     { 9,  1, -1, -1,  0 },
 137     { 9,  1,  0, -1,  1 },
 138     { 9,  0,  1, -1, -1 },
 139     { 9, -1,  1,  1,  0 },
 140     { 9, -1,  0,  1, -1 },
 141     { 9, -1, -1,  1,  0 },
 142     { 9,  0, -1, -1,  1 },
 143     { 9,  1, -1,  0,  1 },
 144     { 9,  1, -1,  0, -1 },
 145
 146     /* 9/10/11 bit codewords */
 147     /* first 5 bits: 11111 */
 148     /* 9 bit: reading 11 bits -> 2 too much so 4 entries for each codeword */
 149     { 9, -1,  1,  0, -1 }, { 9, -1,  1,  0, -1 }, { 9, -1,  1,  0, -1 }, { 9, -1,  1,  0, -1 },
 150     { 9, -1, -1, -1,  0 }, { 9, -1, -1, -1,  0 }, { 9, -1, -1, -1,  0 }, { 9, -1, -1, -1,  0 },
 151     { 9,  0, -1, -1, -1 }, { 9,  0, -1, -1, -1 }, { 9,  0, -1, -1, -1 }, { 9,  0, -1, -1, -1 },
 152     { 9,  0,  1,  1,  1 }, { 9,  0,  1,  1,  1 }, { 9,  0,  1,  1,  1 }, { 9,  0,  1,  1,  1 },
 153     { 9,  1,  0,  1, -1 }, { 9,  1,  0,  1, -1 }, { 9,  1,  0,  1, -1 }, { 9,  1,  0,  1, -1 },
 154     { 9,  1,  1,  0,  1 }, { 9,  1,  1,  0,  1 }, { 9,  1,  1,  0,  1 }, { 9,  1,  1,  0,  1 },
 155     { 9, -1,  1,  0,  1 }, { 9, -1,  1,  0,  1 }, { 9, -1,  1,  0,  1 }, { 9, -1,  1,  0,  1 },
 156     { 9,  1,  1,  1,  0 }, { 9,  1,  1,  1,  0 }, { 9,  1,  1,  1,  0 }, { 9,  1,  1,  1,  0 },
 157     /* 10 bit: reading 11 bits -> 1 too much so 2 entries for each codeword */
 158     { 10, -1, -1,  0,  1 }, { 10, -1, -1,  0,  1 },
 159     { 10, -1,  0, -1, -1 }, { 10, -1,  0, -1, -1 },
 160     { 10,  1,  1,  0, -1 }, { 10,  1,  1,  0, -1 },
 161     { 10,  1,  0, -1, -1 }, { 10,  1,  0, -1, -1 },
 162     { 10, -1,  0, -1,  1 }, { 10, -1,  0, -1,  1 },
 163     { 10, -1, -1,  0, -1 }, { 10, -1, -1,  0, -1 },
 164     { 10, -1,  0,  1,  1 }, { 10, -1,  0,  1,  1 },
 165     { 10,  1,  0,  1,  1 }, { 10,  1,  0,  1,  1 },
 166     /* 11 bit */
 167     { 11,  1, -1,  1, -1 },
 168     { 11, -1,  1, -1,  1 },
 169     { 11, -1,  1,  1, -1 },
 170     { 11,  1, -1, -1,  1 },
 171     { 11,  1,  1,  1,  1 },
 172     { 11, -1, -1,  1,  1 },
 173     { 11,  1,  1, -1, -1 },
 174     { 11, -1, -1,  1, -1 },
 175     { 11, -1, -1, -1, -1 },
 176     { 11,  1,  1, -1,  1 },
 177     { 11,  1, -1,  1,  1 },
 178     { 11, -1,  1,  1,  1 },
 179     { 11, -1,  1, -1, -1 },
 180     { 11, -1, -1, -1,  1 },
 181     { 11,  1, -1, -1, -1 },
 182     { 11,  1,  1,  1, -1 }
 183 };