blob: dbbaa42aaaa1c794cc3d73c2250f3db6d67767ac
| 1 | /* |
| 2 | ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding |
| 3 | ** Copyright (C) 2003-2005 M. Bakker, Nero 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 | ** The "appropriate copyright message" mentioned in section 2c of the GPLv2 |
| 23 | ** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" |
| 24 | ** |
| 25 | ** Commercial non-GPL licensing of this software is possible. |
| 26 | ** For more info contact Nero AG through Mpeg4AAClicense@nero.com. |
| 27 | ** |
| 28 | ** $Id: hcb_6.h,v 1.5 2007/11/01 12:34:11 menno Exp $ |
| 29 | **/ |
| 30 | |
| 31 | /* 2-step huffman table HCB_6 */ |
| 32 | |
| 33 | |
| 34 | /* 1st step: 5 bits |
| 35 | * 2^5 = 32 entries |
| 36 | * |
| 37 | * Used to find offset into 2nd step table and number of extra bits to get |
| 38 | */ |
| 39 | static hcb hcb6_1[] = { |
| 40 | /* 4 bit codewords */ |
| 41 | { /* 00000 */ 0, 0 }, |
| 42 | { /* */ 0, 0 }, |
| 43 | { /* 00010 */ 1, 0 }, |
| 44 | { /* */ 1, 0 }, |
| 45 | { /* 00100 */ 2, 0 }, |
| 46 | { /* */ 2, 0 }, |
| 47 | { /* 00110 */ 3, 0 }, |
| 48 | { /* */ 3, 0 }, |
| 49 | { /* 01000 */ 4, 0 }, |
| 50 | { /* */ 4, 0 }, |
| 51 | { /* 01010 */ 5, 0 }, |
| 52 | { /* */ 5, 0 }, |
| 53 | { /* 01100 */ 6, 0 }, |
| 54 | { /* */ 6, 0 }, |
| 55 | { /* 01110 */ 7, 0 }, |
| 56 | { /* */ 7, 0 }, |
| 57 | { /* 10000 */ 8, 0 }, |
| 58 | { /* */ 8, 0 }, |
| 59 | |
| 60 | /* 6 bit codewords */ |
| 61 | { /* 10010 */ 9, 1 }, |
| 62 | { /* 10011 */ 11, 1 }, |
| 63 | { /* 10100 */ 13, 1 }, |
| 64 | { /* 10101 */ 15, 1 }, |
| 65 | { /* 10110 */ 17, 1 }, |
| 66 | { /* 10111 */ 19, 1 }, |
| 67 | { /* 11000 */ 21, 1 }, |
| 68 | { /* 11001 */ 23, 1 }, |
| 69 | |
| 70 | /* 7 bit codewords */ |
| 71 | { /* 11010 */ 25, 2 }, |
| 72 | { /* 11011 */ 29, 2 }, |
| 73 | { /* 11100 */ 33, 2 }, |
| 74 | |
| 75 | /* 7/8 bit codewords */ |
| 76 | { /* 11101 */ 37, 3 }, |
| 77 | |
| 78 | /* 8/9 bit codewords */ |
| 79 | { /* 11110 */ 45, 4 }, |
| 80 | |
| 81 | /* 9/10/11 bit codewords */ |
| 82 | { /* 11111 */ 61, 6 } |
| 83 | }; |
| 84 | |
| 85 | /* 2nd step table |
| 86 | * |
| 87 | * Gives size of codeword and actual data (x,y,v,w) |
| 88 | */ |
| 89 | static hcb_2_pair hcb6_2[] = { |
| 90 | /* 4 bit codewords */ |
| 91 | { 4, 0, 0 }, |
| 92 | { 4, 1, 0 }, |
| 93 | { 4, 0, -1 }, |
| 94 | { 4, 0, 1 }, |
| 95 | { 4, -1, 0 }, |
| 96 | { 4, 1, 1 }, |
| 97 | { 4, -1, 1 }, |
| 98 | { 4, 1, -1 }, |
| 99 | { 4, -1, -1 }, |
| 100 | |
| 101 | /* 6 bit codewords */ |
| 102 | { 6, 2, -1 }, |
| 103 | { 6, 2, 1 }, |
| 104 | { 6, -2, 1 }, |
| 105 | { 6, -2, -1 }, |
| 106 | { 6, -2, 0 }, |
| 107 | { 6, -1, 2 }, |
| 108 | { 6, 2, 0 }, |
| 109 | { 6, 1, -2 }, |
| 110 | { 6, 1, 2 }, |
| 111 | { 6, 0, -2 }, |
| 112 | { 6, -1, -2 }, |
| 113 | { 6, 0, 2 }, |
| 114 | { 6, 2, -2 }, |
| 115 | { 6, -2, 2 }, |
| 116 | { 6, -2, -2 }, |
| 117 | { 6, 2, 2 }, |
| 118 | |
| 119 | /* 7 bit codewords */ |
| 120 | { 7, -3, 1 }, |
| 121 | { 7, 3, 1 }, |
| 122 | { 7, 3, -1 }, |
| 123 | { 7, -1, 3 }, |
| 124 | { 7, -3, -1 }, |
| 125 | { 7, 1, 3 }, |
| 126 | { 7, 1, -3 }, |
| 127 | { 7, -1, -3 }, |
| 128 | { 7, 3, 0 }, |
| 129 | { 7, -3, 0 }, |
| 130 | { 7, 0, -3 }, |
| 131 | { 7, 0, 3 }, |
| 132 | |
| 133 | /* 7/8 bit codewords */ |
| 134 | { 7, 3, 2 }, { 7, 3, 2 }, |
| 135 | { 8, -3, -2 }, |
| 136 | { 8, -2, 3 }, |
| 137 | { 8, 2, 3 }, |
| 138 | { 8, 3, -2 }, |
| 139 | { 8, 2, -3 }, |
| 140 | { 8, -2, -3 }, |
| 141 | |
| 142 | /* 8 bit codewords */ |
| 143 | { 8, -3, 2 }, { 8, -3, 2 }, |
| 144 | { 8, 3, 3 }, { 8, 3, 3 }, |
| 145 | { 9, 3, -3 }, |
| 146 | { 9, -3, -3 }, |
| 147 | { 9, -3, 3 }, |
| 148 | { 9, 1, -4 }, |
| 149 | { 9, -1, -4 }, |
| 150 | { 9, 4, 1 }, |
| 151 | { 9, -4, 1 }, |
| 152 | { 9, -4, -1 }, |
| 153 | { 9, 1, 4 }, |
| 154 | { 9, 4, -1 }, |
| 155 | { 9, -1, 4 }, |
| 156 | { 9, 0, -4 }, |
| 157 | |
| 158 | /* 9/10/11 bit codewords */ |
| 159 | { 9, -4, 2 }, { 9, -4, 2 }, { 9, -4, 2 }, { 9, -4, 2 }, |
| 160 | { 9, -4, -2 }, { 9, -4, -2 }, { 9, -4, -2 }, { 9, -4, -2 }, |
| 161 | { 9, 2, 4 }, { 9, 2, 4 }, { 9, 2, 4 }, { 9, 2, 4 }, |
| 162 | { 9, -2, -4 }, { 9, -2, -4 }, { 9, -2, -4 }, { 9, -2, -4 }, |
| 163 | { 9, -4, 0 }, { 9, -4, 0 }, { 9, -4, 0 }, { 9, -4, 0 }, |
| 164 | { 9, 4, 2 }, { 9, 4, 2 }, { 9, 4, 2 }, { 9, 4, 2 }, |
| 165 | { 9, 4, -2 }, { 9, 4, -2 }, { 9, 4, -2 }, { 9, 4, -2 }, |
| 166 | { 9, -2, 4 }, { 9, -2, 4 }, { 9, -2, 4 }, { 9, -2, 4 }, |
| 167 | { 9, 4, 0 }, { 9, 4, 0 }, { 9, 4, 0 }, { 9, 4, 0 }, |
| 168 | { 9, 2, -4 }, { 9, 2, -4 }, { 9, 2, -4 }, { 9, 2, -4 }, |
| 169 | { 9, 0, 4 }, { 9, 0, 4 }, { 9, 0, 4 }, { 9, 0, 4 }, |
| 170 | { 10, -3, -4 }, { 10, -3, -4 }, |
| 171 | { 10, -3, 4 }, { 10, -3, 4 }, |
| 172 | { 10, 3, -4 }, { 10, 3, -4 }, |
| 173 | { 10, 4, -3 }, { 10, 4, -3 }, |
| 174 | { 10, 3, 4 }, { 10, 3, 4 }, |
| 175 | { 10, 4, 3 }, { 10, 4, 3 }, |
| 176 | { 10, -4, 3 }, { 10, -4, 3 }, |
| 177 | { 10, -4, -3 }, { 10, -4, -3 }, |
| 178 | { 11, 4, 4 }, |
| 179 | { 11, -4, 4 }, |
| 180 | { 11, -4, -4 }, |
| 181 | { 11, 4, -4 } |
| 182 | }; |
| 183 |