1 /****************************************************************************** 2 * 3 * Copyright (C) 1999-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * This file contains the coefficient table used for DCT computation in 22 * analysis. 23 * 24 ******************************************************************************/ 25 26 #include "sbc_encoder.h" 27 /*DCT coeff for 4 sub-band case.*/ 28 #if (SBC_FAST_DCT == FALSE) 29 const SINT16 gas16AnalDCTcoeff4[] = 30 { 31 (SINT16)(0.7071*32768), 32 (SINT16)(0.9239*32768), 33 (SINT16)(1.0000*32767), 34 (SINT16)(0.9239*32768), 35 (SINT16)(0.7071*32768), 36 (SINT16)(0.3827*32768), 37 (SINT16)(0.0000*32768), 38 (SINT16)(-0.3827*32768), 39 40 (SINT16)(-0.7071*32768), 41 (SINT16)(0.3827*32768), 42 (SINT16)(1.0000*32767), 43 (SINT16)(0.3827*32768), 44 (SINT16)(-0.7071*32768), 45 (SINT16)(-0.9239*32768), 46 (SINT16)(-0.0000*32768), 47 (SINT16)(0.9239*32768), 48 49 (SINT16)(-0.7071*32768), 50 (SINT16)(-0.3827*32768), 51 (SINT16)(1.0000*32767), 52 (SINT16)(-0.3827*32768), 53 (SINT16)(-0.7071*32768), 54 (SINT16)(0.9239*32768), 55 (SINT16)(0.0000*32768), 56 (SINT16)(-0.9239*32768), 57 58 (SINT16)(0.7071*32768), 59 (SINT16)(-0.9239*32768), 60 (SINT16)(1.0000*32767), 61 (SINT16)(-0.9239*32768), 62 (SINT16)(0.7071*32768), 63 (SINT16)(-0.3827*32768), 64 (SINT16)(-0.0000*32768), 65 (SINT16)(0.3827*32768) 66 }; 67 68 /*DCT coeff for 8 sub-band case.*/ 69 const SINT16 gas16AnalDCTcoeff8[] = 70 { 71 (SINT16)(0.7071*32768), 72 (SINT16)(0.8315*32768), 73 (SINT16)(0.9239*32768), 74 (SINT16)(0.9808*32768), 75 (SINT16)(1.0000*32767), 76 (SINT16)(0.9808*32768), 77 (SINT16)(0.9239*32768), 78 (SINT16)(0.8315*32768), 79 (SINT16)(0.7071*32768), 80 (SINT16)(0.5556*32768), 81 (SINT16)(0.3827*32768), 82 (SINT16)(0.1951*32768), 83 (SINT16)(0.0000*32768), 84 (SINT16)(-0.1951*32768), 85 (SINT16)(-0.3827*32768), 86 (SINT16)(-0.5556*32768), 87 (SINT16)(-0.7071*32768), 88 (SINT16)(-0.1951*32768), 89 (SINT16)(0.3827*32768), 90 (SINT16)(0.8315*32768), 91 (SINT16)(1.0000*32767), 92 (SINT16)(0.8315*32768), 93 (SINT16)(0.3827*32768), 94 (SINT16)(-0.1951*32768), 95 (SINT16)(-0.7071*32768), 96 (SINT16)(-0.9808*32768), 97 (SINT16)(-0.9239*32768), 98 (SINT16)(-0.5556*32768), 99 (SINT16)(-0.0000*32768), 100 (SINT16)(0.5556*32768), 101 (SINT16)(0.9239*32768), 102 (SINT16)(0.9808*32768), 103 (SINT16)(-0.7071*32768), 104 (SINT16)(-0.9808*32768), 105 (SINT16)(-0.3827*32768), 106 (SINT16)(0.5556*32768), 107 (SINT16)(1.0000*32767), 108 (SINT16)(0.5556*32768), 109 (SINT16)(-0.3827*32768), 110 (SINT16)(-0.9808*32768), 111 (SINT16)(-0.7071*32768), 112 (SINT16)(0.1951*32768), 113 (SINT16)(0.9239*32768), 114 (SINT16)(0.8315*32768), 115 (SINT16)(0.0000*32768), 116 (SINT16)(-0.8315*32768), 117 (SINT16)(-0.9239*32768), 118 (SINT16)(-0.1951*32768), 119 (SINT16)(0.7071*32768), 120 (SINT16)(-0.5556*32768), 121 (SINT16)(-0.9239*32768), 122 (SINT16)(0.1951*32768), 123 (SINT16)(1.0000*32767), 124 (SINT16)(0.1951*32768), 125 (SINT16)(-0.9239*32768), 126 (SINT16)(-0.5556*32768), 127 (SINT16)(0.7071*32768), 128 (SINT16)(0.8315*32768), 129 (SINT16)(-0.3827*32768), 130 (SINT16)(-0.9808*32768), 131 (SINT16)(-0.0000*32768), 132 (SINT16)(0.9808*32768), 133 (SINT16)(0.3827*32768), 134 (SINT16)(-0.8315*32768), 135 (SINT16)(0.7071*32768), 136 (SINT16)(0.5556*32768), 137 (SINT16)(-0.9239*32768), 138 (SINT16)(-0.1951*32768), 139 (SINT16)(1.0000*32767), 140 (SINT16)(-0.1951*32768), 141 (SINT16)(-0.9239*32768), 142 (SINT16)(0.5556*32768), 143 (SINT16)(0.7071*32768), 144 (SINT16)(-0.8315*32768), 145 (SINT16)(-0.3827*32768), 146 (SINT16)(0.9808*32768), 147 (SINT16)(0.0000*32768), 148 (SINT16)(-0.9808*32768), 149 (SINT16)(0.3827*32768), 150 (SINT16)(0.8315*32768), 151 (SINT16)(-0.7071*32768), 152 (SINT16)(0.9808*32768), 153 (SINT16)(-0.3827*32768), 154 (SINT16)(-0.5556*32768), 155 (SINT16)(1.0000*32767), 156 (SINT16)(-0.5556*32768), 157 (SINT16)(-0.3827*32768), 158 (SINT16)(0.9808*32768), 159 (SINT16)(-0.7071*32768), 160 (SINT16)(-0.1951*32768), 161 (SINT16)(0.9239*32768), 162 (SINT16)(-0.8315*32768), 163 (SINT16)(-0.0000*32768), 164 (SINT16)(0.8315*32768), 165 (SINT16)(-0.9239*32768), 166 (SINT16)(0.1951*32768), 167 (SINT16)(-0.7071*32768), 168 (SINT16)(0.1951*32768), 169 (SINT16)(0.3827*32768), 170 (SINT16)(-0.8315*32768), 171 (SINT16)(1.0000*32767), 172 (SINT16)(-0.8315*32768), 173 (SINT16)(0.3827*32768), 174 (SINT16)(0.1951*32768), 175 (SINT16)(-0.7071*32768), 176 (SINT16)(0.9808*32768), 177 (SINT16)(-0.9239*32768), 178 (SINT16)(0.5556*32768), 179 (SINT16)(-0.0000*32768), 180 (SINT16)(-0.5556*32768), 181 (SINT16)(0.9239*32768), 182 (SINT16)(-0.9808*32768), 183 (SINT16)(0.7071*32768), 184 (SINT16)(-0.8315*32768), 185 (SINT16)(0.9239*32768), 186 (SINT16)(-0.9808*32768), 187 (SINT16)(1.0000*32767), 188 (SINT16)(-0.9808*32768), 189 (SINT16)(0.9239*32768), 190 (SINT16)(-0.8315*32768), 191 (SINT16)(0.7071*32768), 192 (SINT16)(-0.5556*32768), 193 (SINT16)(0.3827*32768), 194 (SINT16)(-0.1951*32768), 195 (SINT16)(-0.0000*32768), 196 (SINT16)(0.1951*32768), 197 (SINT16)(-0.3827*32768), 198 (SINT16)(0.5556*32768) 199 }; 200 #endif 201
