1 /* 2 * 3 * Bluetooth low-complexity, subband codec (SBC) library 4 * 5 * Copyright (C) 2004-2009 Marcel Holtmann <marcel (at) holtmann.org> 6 * Copyright (C) 2004-2005 Henryk Ploetz <henryk (at) ploetzli.ch> 7 * Copyright (C) 2005-2006 Brad Midgley <bmidgley (at) xmission.com> 8 * 9 * 10 * This library is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU Lesser General Public 12 * License as published by the Free Software Foundation; either 13 * version 2.1 of the License, or (at your option) any later version. 14 * 15 * This library is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * Lesser General Public License for more details. 19 * 20 * You should have received a copy of the GNU Lesser General Public 21 * License along with this library; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 * 24 */ 25 26 /* A2DP specification: Appendix B, page 69 */ 27 static const int sbc_offset4[4][4] = { 28 { -1, 0, 0, 0 }, 29 { -2, 0, 0, 1 }, 30 { -2, 0, 0, 1 }, 31 { -2, 0, 0, 1 } 32 }; 33 34 /* A2DP specification: Appendix B, page 69 */ 35 static const int sbc_offset8[4][8] = { 36 { -2, 0, 0, 0, 0, 0, 0, 1 }, 37 { -3, 0, 0, 0, 0, 0, 1, 2 }, 38 { -4, 0, 0, 0, 0, 0, 1, 2 }, 39 { -4, 0, 0, 0, 0, 0, 1, 2 } 40 }; 41 42 43 #define SS4(val) ASR(val, SCALE_SPROTO4_TBL) 44 #define SS8(val) ASR(val, SCALE_SPROTO8_TBL) 45 #define SN4(val) ASR(val, SCALE_NPROTO4_TBL) 46 #define SN8(val) ASR(val, SCALE_NPROTO8_TBL) 47 48 static const int32_t sbc_proto_4_40m0[] = { 49 SS4(0x00000000), SS4(0xffa6982f), SS4(0xfba93848), SS4(0x0456c7b8), 50 SS4(0x005967d1), SS4(0xfffb9ac7), SS4(0xff589157), SS4(0xf9c2a8d8), 51 SS4(0x027c1434), SS4(0x0019118b), SS4(0xfff3c74c), SS4(0xff137330), 52 SS4(0xf81b8d70), SS4(0x00ec1b8b), SS4(0xfff0b71a), SS4(0xffe99b00), 53 SS4(0xfef84470), SS4(0xf6fb4370), SS4(0xffcdc351), SS4(0xffe01dc7) 54 }; 55 56 static const int32_t sbc_proto_4_40m1[] = { 57 SS4(0xffe090ce), SS4(0xff2c0475), SS4(0xf694f800), SS4(0xff2c0475), 58 SS4(0xffe090ce), SS4(0xffe01dc7), SS4(0xffcdc351), SS4(0xf6fb4370), 59 SS4(0xfef84470), SS4(0xffe99b00), SS4(0xfff0b71a), SS4(0x00ec1b8b), 60 SS4(0xf81b8d70), SS4(0xff137330), SS4(0xfff3c74c), SS4(0x0019118b), 61 SS4(0x027c1434), SS4(0xf9c2a8d8), SS4(0xff589157), SS4(0xfffb9ac7) 62 }; 63 64 static const int32_t sbc_proto_8_80m0[] = { 65 SS8(0x00000000), SS8(0xfe8d1970), SS8(0xee979f00), SS8(0x11686100), 66 SS8(0x0172e690), SS8(0xfff5bd1a), SS8(0xfdf1c8d4), SS8(0xeac182c0), 67 SS8(0x0d9daee0), SS8(0x00e530da), SS8(0xffe9811d), SS8(0xfd52986c), 68 SS8(0xe7054ca0), SS8(0x0a00d410), SS8(0x006c1de4), SS8(0xffdba705), 69 SS8(0xfcbc98e8), SS8(0xe3889d20), SS8(0x06af2308), SS8(0x000bb7db), 70 SS8(0xffca00ed), SS8(0xfc3fbb68), SS8(0xe071bc00), SS8(0x03bf7948), 71 SS8(0xffc4e05c), SS8(0xffb54b3b), SS8(0xfbedadc0), SS8(0xdde26200), 72 SS8(0x0142291c), SS8(0xff960e94), SS8(0xff9f3e17), SS8(0xfbd8f358), 73 SS8(0xdbf79400), SS8(0xff405e01), SS8(0xff7d4914), SS8(0xff8b1a31), 74 SS8(0xfc1417b8), SS8(0xdac7bb40), SS8(0xfdbb828c), SS8(0xff762170) 75 }; 76 77 static const int32_t sbc_proto_8_80m1[] = { 78 SS8(0xff7c272c), SS8(0xfcb02620), SS8(0xda612700), SS8(0xfcb02620), 79 SS8(0xff7c272c), SS8(0xff762170), SS8(0xfdbb828c), SS8(0xdac7bb40), 80 SS8(0xfc1417b8), SS8(0xff8b1a31), SS8(0xff7d4914), SS8(0xff405e01), 81 SS8(0xdbf79400), SS8(0xfbd8f358), SS8(0xff9f3e17), SS8(0xff960e94), 82 SS8(0x0142291c), SS8(0xdde26200), SS8(0xfbedadc0), SS8(0xffb54b3b), 83 SS8(0xffc4e05c), SS8(0x03bf7948), SS8(0xe071bc00), SS8(0xfc3fbb68), 84 SS8(0xffca00ed), SS8(0x000bb7db), SS8(0x06af2308), SS8(0xe3889d20), 85 SS8(0xfcbc98e8), SS8(0xffdba705), SS8(0x006c1de4), SS8(0x0a00d410), 86 SS8(0xe7054ca0), SS8(0xfd52986c), SS8(0xffe9811d), SS8(0x00e530da), 87 SS8(0x0d9daee0), SS8(0xeac182c0), SS8(0xfdf1c8d4), SS8(0xfff5bd1a) 88 }; 89 90 static const int32_t synmatrix4[8][4] = { 91 { SN4(0x05a82798), SN4(0xfa57d868), SN4(0xfa57d868), SN4(0x05a82798) }, 92 { SN4(0x030fbc54), SN4(0xf89be510), SN4(0x07641af0), SN4(0xfcf043ac) }, 93 { SN4(0x00000000), SN4(0x00000000), SN4(0x00000000), SN4(0x00000000) }, 94 { SN4(0xfcf043ac), SN4(0x07641af0), SN4(0xf89be510), SN4(0x030fbc54) }, 95 { SN4(0xfa57d868), SN4(0x05a82798), SN4(0x05a82798), SN4(0xfa57d868) }, 96 { SN4(0xf89be510), SN4(0xfcf043ac), SN4(0x030fbc54), SN4(0x07641af0) }, 97 { SN4(0xf8000000), SN4(0xf8000000), SN4(0xf8000000), SN4(0xf8000000) }, 98 { SN4(0xf89be510), SN4(0xfcf043ac), SN4(0x030fbc54), SN4(0x07641af0) } 99 }; 100 101 static const int32_t synmatrix8[16][8] = { 102 { SN8(0x05a82798), SN8(0xfa57d868), SN8(0xfa57d868), SN8(0x05a82798), 103 SN8(0x05a82798), SN8(0xfa57d868), SN8(0xfa57d868), SN8(0x05a82798) }, 104 { SN8(0x0471ced0), SN8(0xf8275a10), SN8(0x018f8b84), SN8(0x06a6d988), 105 SN8(0xf9592678), SN8(0xfe70747c), SN8(0x07d8a5f0), SN8(0xfb8e3130) }, 106 { SN8(0x030fbc54), SN8(0xf89be510), SN8(0x07641af0), SN8(0xfcf043ac), 107 SN8(0xfcf043ac), SN8(0x07641af0), SN8(0xf89be510), SN8(0x030fbc54) }, 108 { SN8(0x018f8b84), SN8(0xfb8e3130), SN8(0x06a6d988), SN8(0xf8275a10), 109 SN8(0x07d8a5f0), SN8(0xf9592678), SN8(0x0471ced0), SN8(0xfe70747c) }, 110 { SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), 111 SN8(0x00000000), SN8(0x00000000), SN8(0x00000000), SN8(0x00000000) }, 112 { SN8(0xfe70747c), SN8(0x0471ced0), SN8(0xf9592678), SN8(0x07d8a5f0), 113 SN8(0xf8275a10), SN8(0x06a6d988), SN8(0xfb8e3130), SN8(0x018f8b84) }, 114 { SN8(0xfcf043ac), SN8(0x07641af0), SN8(0xf89be510), SN8(0x030fbc54), 115 SN8(0x030fbc54), SN8(0xf89be510), SN8(0x07641af0), SN8(0xfcf043ac) }, 116 { SN8(0xfb8e3130), SN8(0x07d8a5f0), SN8(0xfe70747c), SN8(0xf9592678), 117 SN8(0x06a6d988), SN8(0x018f8b84), SN8(0xf8275a10), SN8(0x0471ced0) }, 118 { SN8(0xfa57d868), SN8(0x05a82798), SN8(0x05a82798), SN8(0xfa57d868), 119 SN8(0xfa57d868), SN8(0x05a82798), SN8(0x05a82798), SN8(0xfa57d868) }, 120 { SN8(0xf9592678), SN8(0x018f8b84), SN8(0x07d8a5f0), SN8(0x0471ced0), 121 SN8(0xfb8e3130), SN8(0xf8275a10), SN8(0xfe70747c), SN8(0x06a6d988) }, 122 { SN8(0xf89be510), SN8(0xfcf043ac), SN8(0x030fbc54), SN8(0x07641af0), 123 SN8(0x07641af0), SN8(0x030fbc54), SN8(0xfcf043ac), SN8(0xf89be510) }, 124 { SN8(0xf8275a10), SN8(0xf9592678), SN8(0xfb8e3130), SN8(0xfe70747c), 125 SN8(0x018f8b84), SN8(0x0471ced0), SN8(0x06a6d988), SN8(0x07d8a5f0) }, 126 { SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), 127 SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000), SN8(0xf8000000) }, 128 { SN8(0xf8275a10), SN8(0xf9592678), SN8(0xfb8e3130), SN8(0xfe70747c), 129 SN8(0x018f8b84), SN8(0x0471ced0), SN8(0x06a6d988), SN8(0x07d8a5f0) }, 130 { SN8(0xf89be510), SN8(0xfcf043ac), SN8(0x030fbc54), SN8(0x07641af0), 131 SN8(0x07641af0), SN8(0x030fbc54), SN8(0xfcf043ac), SN8(0xf89be510) }, 132 { SN8(0xf9592678), SN8(0x018f8b84), SN8(0x07d8a5f0), SN8(0x0471ced0), 133 SN8(0xfb8e3130), SN8(0xf8275a10), SN8(0xfe70747c), SN8(0x06a6d988) } 134 }; 135 136 /* Uncomment the following line to enable high precision build of SBC encoder */ 137 138 /* #define SBC_HIGH_PRECISION */ 139 140 #ifdef SBC_HIGH_PRECISION 141 #define FIXED_A int64_t /* data type for fixed point accumulator */ 142 #define FIXED_T int32_t /* data type for fixed point constants */ 143 #define SBC_FIXED_EXTRA_BITS 16 144 #else 145 #define FIXED_A int32_t /* data type for fixed point accumulator */ 146 #define FIXED_T int16_t /* data type for fixed point constants */ 147 #define SBC_FIXED_EXTRA_BITS 0 148 #endif 149 150 /* A2DP specification: Section 12.8 Tables 151 * 152 * Original values are premultiplied by 2 for better precision (that is the 153 * maximum which is possible without overflows) 154 * 155 * Note: in each block of 8 numbers sign was changed for elements 2 and 7 156 * in order to compensate the same change applied to cos_table_fixed_4 157 */ 158 #define SBC_PROTO_FIXED4_SCALE \ 159 ((sizeof(FIXED_T) * CHAR_BIT - 1) - SBC_FIXED_EXTRA_BITS + 1) 160 #define F_PROTO4(x) (FIXED_A) ((x * 2) * \ 161 ((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5) 162 #define F(x) F_PROTO4(x) 163 static const FIXED_T _sbc_proto_fixed4[40] = { 164 F(0.00000000E+00), F(5.36548976E-04), 165 -F(1.49188357E-03), F(2.73370904E-03), 166 F(3.83720193E-03), F(3.89205149E-03), 167 F(1.86581691E-03), F(3.06012286E-03), 168 169 F(1.09137620E-02), F(2.04385087E-02), 170 -F(2.88757392E-02), F(3.21939290E-02), 171 F(2.58767811E-02), F(6.13245186E-03), 172 -F(2.88217274E-02), F(7.76463494E-02), 173 174 F(1.35593274E-01), F(1.94987841E-01), 175 -F(2.46636662E-01), F(2.81828203E-01), 176 F(2.94315332E-01), F(2.81828203E-01), 177 F(2.46636662E-01), -F(1.94987841E-01), 178 179 -F(1.35593274E-01), -F(7.76463494E-02), 180 F(2.88217274E-02), F(6.13245186E-03), 181 F(2.58767811E-02), F(3.21939290E-02), 182 F(2.88757392E-02), -F(2.04385087E-02), 183 184 -F(1.09137620E-02), -F(3.06012286E-03), 185 -F(1.86581691E-03), F(3.89205149E-03), 186 F(3.83720193E-03), F(2.73370904E-03), 187 F(1.49188357E-03), -F(5.36548976E-04), 188 }; 189 #undef F 190 191 /* 192 * To produce this cosine matrix in Octave: 193 * 194 * b = zeros(4, 8); 195 * for i = 0:3 196 * for j = 0:7 b(i+1, j+1) = cos((i + 0.5) * (j - 2) * (pi/4)) 197 * endfor 198 * endfor; 199 * printf("%.10f, ", b'); 200 * 201 * Note: in each block of 8 numbers sign was changed for elements 2 and 7 202 * 203 * Change of sign for element 2 allows to replace constant 1.0 (not 204 * representable in Q15 format) with -1.0 (fine with Q15). 205 * Changed sign for element 7 allows to have more similar constants 206 * and simplify subband filter function code. 207 */ 208 #define SBC_COS_TABLE_FIXED4_SCALE \ 209 ((sizeof(FIXED_T) * CHAR_BIT - 1) + SBC_FIXED_EXTRA_BITS) 210 #define F_COS4(x) (FIXED_A) ((x) * \ 211 ((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5) 212 #define F(x) F_COS4(x) 213 static const FIXED_T cos_table_fixed_4[32] = { 214 F(0.7071067812), F(0.9238795325), -F(1.0000000000), F(0.9238795325), 215 F(0.7071067812), F(0.3826834324), F(0.0000000000), F(0.3826834324), 216 217 -F(0.7071067812), F(0.3826834324), -F(1.0000000000), F(0.3826834324), 218 -F(0.7071067812), -F(0.9238795325), -F(0.0000000000), -F(0.9238795325), 219 220 -F(0.7071067812), -F(0.3826834324), -F(1.0000000000), -F(0.3826834324), 221 -F(0.7071067812), F(0.9238795325), F(0.0000000000), F(0.9238795325), 222 223 F(0.7071067812), -F(0.9238795325), -F(1.0000000000), -F(0.9238795325), 224 F(0.7071067812), -F(0.3826834324), -F(0.0000000000), -F(0.3826834324), 225 }; 226 #undef F 227 228 /* A2DP specification: Section 12.8 Tables 229 * 230 * Original values are premultiplied by 4 for better precision (that is the 231 * maximum which is possible without overflows) 232 * 233 * Note: in each block of 16 numbers sign was changed for elements 4, 13, 14, 15 234 * in order to compensate the same change applied to cos_table_fixed_8 235 */ 236 #define SBC_PROTO_FIXED8_SCALE \ 237 ((sizeof(FIXED_T) * CHAR_BIT - 1) - SBC_FIXED_EXTRA_BITS + 1) 238 #define F_PROTO8(x) (FIXED_A) ((x * 2) * \ 239 ((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5) 240 #define F(x) F_PROTO8(x) 241 static const FIXED_T _sbc_proto_fixed8[80] = { 242 F(0.00000000E+00), F(1.56575398E-04), 243 F(3.43256425E-04), F(5.54620202E-04), 244 -F(8.23919506E-04), F(1.13992507E-03), 245 F(1.47640169E-03), F(1.78371725E-03), 246 F(2.01182542E-03), F(2.10371989E-03), 247 F(1.99454554E-03), F(1.61656283E-03), 248 F(9.02154502E-04), F(1.78805361E-04), 249 F(1.64973098E-03), F(3.49717454E-03), 250 251 F(5.65949473E-03), F(8.02941163E-03), 252 F(1.04584443E-02), F(1.27472335E-02), 253 -F(1.46525263E-02), F(1.59045603E-02), 254 F(1.62208471E-02), F(1.53184106E-02), 255 F(1.29371806E-02), F(8.85757540E-03), 256 F(2.92408442E-03), -F(4.91578024E-03), 257 -F(1.46404076E-02), F(2.61098752E-02), 258 F(3.90751381E-02), F(5.31873032E-02), 259 260 F(6.79989431E-02), F(8.29847578E-02), 261 F(9.75753918E-02), F(1.11196689E-01), 262 -F(1.23264548E-01), F(1.33264415E-01), 263 F(1.40753505E-01), F(1.45389847E-01), 264 F(1.46955068E-01), F(1.45389847E-01), 265 F(1.40753505E-01), F(1.33264415E-01), 266 F(1.23264548E-01), -F(1.11196689E-01), 267 -F(9.75753918E-02), -F(8.29847578E-02), 268 269 -F(6.79989431E-02), -F(5.31873032E-02), 270 -F(3.90751381E-02), -F(2.61098752E-02), 271 F(1.46404076E-02), -F(4.91578024E-03), 272 F(2.92408442E-03), F(8.85757540E-03), 273 F(1.29371806E-02), F(1.53184106E-02), 274 F(1.62208471E-02), F(1.59045603E-02), 275 F(1.46525263E-02), -F(1.27472335E-02), 276 -F(1.04584443E-02), -F(8.02941163E-03), 277 278 -F(5.65949473E-03), -F(3.49717454E-03), 279 -F(1.64973098E-03), -F(1.78805361E-04), 280 -F(9.02154502E-04), F(1.61656283E-03), 281 F(1.99454554E-03), F(2.10371989E-03), 282 F(2.01182542E-03), F(1.78371725E-03), 283 F(1.47640169E-03), F(1.13992507E-03), 284 F(8.23919506E-04), -F(5.54620202E-04), 285 -F(3.43256425E-04), -F(1.56575398E-04), 286 }; 287 #undef F 288 289 /* 290 * To produce this cosine matrix in Octave: 291 * 292 * b = zeros(8, 16); 293 * for i = 0:7 294 * for j = 0:15 b(i+1, j+1) = cos((i + 0.5) * (j - 4) * (pi/8)) 295 * endfor endfor; 296 * printf("%.10f, ", b'); 297 * 298 * Note: in each block of 16 numbers sign was changed for elements 4, 13, 14, 15 299 * 300 * Change of sign for element 4 allows to replace constant 1.0 (not 301 * representable in Q15 format) with -1.0 (fine with Q15). 302 * Changed signs for elements 13, 14, 15 allow to have more similar constants 303 * and simplify subband filter function code. 304 */ 305 #define SBC_COS_TABLE_FIXED8_SCALE \ 306 ((sizeof(FIXED_T) * CHAR_BIT - 1) + SBC_FIXED_EXTRA_BITS) 307 #define F_COS8(x) (FIXED_A) ((x) * \ 308 ((FIXED_A) 1 << (sizeof(FIXED_T) * CHAR_BIT - 1)) + 0.5) 309 #define F(x) F_COS8(x) 310 static const FIXED_T cos_table_fixed_8[128] = { 311 F(0.7071067812), F(0.8314696123), F(0.9238795325), F(0.9807852804), 312 -F(1.0000000000), F(0.9807852804), F(0.9238795325), F(0.8314696123), 313 F(0.7071067812), F(0.5555702330), F(0.3826834324), F(0.1950903220), 314 F(0.0000000000), F(0.1950903220), F(0.3826834324), F(0.5555702330), 315 316 -F(0.7071067812), -F(0.1950903220), F(0.3826834324), F(0.8314696123), 317 -F(1.0000000000), F(0.8314696123), F(0.3826834324), -F(0.1950903220), 318 -F(0.7071067812), -F(0.9807852804), -F(0.9238795325), -F(0.5555702330), 319 -F(0.0000000000), -F(0.5555702330), -F(0.9238795325), -F(0.9807852804), 320 321 -F(0.7071067812), -F(0.9807852804), -F(0.3826834324), F(0.5555702330), 322 -F(1.0000000000), F(0.5555702330), -F(0.3826834324), -F(0.9807852804), 323 -F(0.7071067812), F(0.1950903220), F(0.9238795325), F(0.8314696123), 324 F(0.0000000000), F(0.8314696123), F(0.9238795325), F(0.1950903220), 325 326 F(0.7071067812), -F(0.5555702330), -F(0.9238795325), F(0.1950903220), 327 -F(1.0000000000), F(0.1950903220), -F(0.9238795325), -F(0.5555702330), 328 F(0.7071067812), F(0.8314696123), -F(0.3826834324), -F(0.9807852804), 329 -F(0.0000000000), -F(0.9807852804), -F(0.3826834324), F(0.8314696123), 330 331 F(0.7071067812), F(0.5555702330), -F(0.9238795325), -F(0.1950903220), 332 -F(1.0000000000), -F(0.1950903220), -F(0.9238795325), F(0.5555702330), 333 F(0.7071067812), -F(0.8314696123), -F(0.3826834324), F(0.9807852804), 334 F(0.0000000000), F(0.9807852804), -F(0.3826834324), -F(0.8314696123), 335 336 -F(0.7071067812), F(0.9807852804), -F(0.3826834324), -F(0.5555702330), 337 -F(1.0000000000), -F(0.5555702330), -F(0.3826834324), F(0.9807852804), 338 -F(0.7071067812), -F(0.1950903220), F(0.9238795325), -F(0.8314696123), 339 -F(0.0000000000), -F(0.8314696123), F(0.9238795325), -F(0.1950903220), 340 341 -F(0.7071067812), F(0.1950903220), F(0.3826834324), -F(0.8314696123), 342 -F(1.0000000000), -F(0.8314696123), F(0.3826834324), F(0.1950903220), 343 -F(0.7071067812), F(0.9807852804), -F(0.9238795325), F(0.5555702330), 344 -F(0.0000000000), F(0.5555702330), -F(0.9238795325), F(0.9807852804), 345 346 F(0.7071067812), -F(0.8314696123), F(0.9238795325), -F(0.9807852804), 347 -F(1.0000000000), -F(0.9807852804), F(0.9238795325), -F(0.8314696123), 348 F(0.7071067812), -F(0.5555702330), F(0.3826834324), -F(0.1950903220), 349 -F(0.0000000000), -F(0.1950903220), F(0.3826834324), -F(0.5555702330), 350 }; 351 #undef F 352 353 /* 354 * Enforce 16 byte alignment for the data, which is supposed to be used 355 * with SIMD optimized code. 356 */ 357 358 #define SBC_ALIGN_BITS 4 359 #define SBC_ALIGN_MASK ((1 << (SBC_ALIGN_BITS)) - 1) 360 361 #ifdef __GNUC__ 362 #define SBC_ALIGNED __attribute__((aligned(1 << (SBC_ALIGN_BITS)))) 363 #else 364 #define SBC_ALIGNED 365 #endif 366 367 /* 368 * Constant tables for the use in SIMD optimized analysis filters 369 * Each table consists of two parts: 370 * 1. reordered "proto" table 371 * 2. reordered "cos" table 372 * 373 * Due to non-symmetrical reordering, separate tables for "even" 374 * and "odd" cases are needed 375 */ 376 377 static const FIXED_T SBC_ALIGNED analysis_consts_fixed4_simd_even[40 + 16] = { 378 #define C0 1.0932568993 379 #define C1 1.3056875580 380 #define C2 1.3056875580 381 #define C3 1.6772280856 382 383 #define F(x) F_PROTO4(x) 384 F(0.00000000E+00 * C0), F(3.83720193E-03 * C0), 385 F(5.36548976E-04 * C1), F(2.73370904E-03 * C1), 386 F(3.06012286E-03 * C2), F(3.89205149E-03 * C2), 387 F(0.00000000E+00 * C3), -F(1.49188357E-03 * C3), 388 F(1.09137620E-02 * C0), F(2.58767811E-02 * C0), 389 F(2.04385087E-02 * C1), F(3.21939290E-02 * C1), 390 F(7.76463494E-02 * C2), F(6.13245186E-03 * C2), 391 F(0.00000000E+00 * C3), -F(2.88757392E-02 * C3), 392 F(1.35593274E-01 * C0), F(2.94315332E-01 * C0), 393 F(1.94987841E-01 * C1), F(2.81828203E-01 * C1), 394 -F(1.94987841E-01 * C2), F(2.81828203E-01 * C2), 395 F(0.00000000E+00 * C3), -F(2.46636662E-01 * C3), 396 -F(1.35593274E-01 * C0), F(2.58767811E-02 * C0), 397 -F(7.76463494E-02 * C1), F(6.13245186E-03 * C1), 398 -F(2.04385087E-02 * C2), F(3.21939290E-02 * C2), 399 F(0.00000000E+00 * C3), F(2.88217274E-02 * C3), 400 -F(1.09137620E-02 * C0), F(3.83720193E-03 * C0), 401 -F(3.06012286E-03 * C1), F(3.89205149E-03 * C1), 402 -F(5.36548976E-04 * C2), F(2.73370904E-03 * C2), 403 F(0.00000000E+00 * C3), -F(1.86581691E-03 * C3), 404 #undef F 405 #define F(x) F_COS4(x) 406 F(0.7071067812 / C0), F(0.9238795325 / C1), 407 -F(0.7071067812 / C0), F(0.3826834324 / C1), 408 -F(0.7071067812 / C0), -F(0.3826834324 / C1), 409 F(0.7071067812 / C0), -F(0.9238795325 / C1), 410 F(0.3826834324 / C2), -F(1.0000000000 / C3), 411 -F(0.9238795325 / C2), -F(1.0000000000 / C3), 412 F(0.9238795325 / C2), -F(1.0000000000 / C3), 413 -F(0.3826834324 / C2), -F(1.0000000000 / C3), 414 #undef F 415 416 #undef C0 417 #undef C1 418 #undef C2 419 #undef C3 420 }; 421 422 static const FIXED_T SBC_ALIGNED analysis_consts_fixed4_simd_odd[40 + 16] = { 423 #define C0 1.3056875580 424 #define C1 1.6772280856 425 #define C2 1.0932568993 426 #define C3 1.3056875580 427 428 #define F(x) F_PROTO4(x) 429 F(2.73370904E-03 * C0), F(5.36548976E-04 * C0), 430 -F(1.49188357E-03 * C1), F(0.00000000E+00 * C1), 431 F(3.83720193E-03 * C2), F(1.09137620E-02 * C2), 432 F(3.89205149E-03 * C3), F(3.06012286E-03 * C3), 433 F(3.21939290E-02 * C0), F(2.04385087E-02 * C0), 434 -F(2.88757392E-02 * C1), F(0.00000000E+00 * C1), 435 F(2.58767811E-02 * C2), F(1.35593274E-01 * C2), 436 F(6.13245186E-03 * C3), F(7.76463494E-02 * C3), 437 F(2.81828203E-01 * C0), F(1.94987841E-01 * C0), 438 -F(2.46636662E-01 * C1), F(0.00000000E+00 * C1), 439 F(2.94315332E-01 * C2), -F(1.35593274E-01 * C2), 440 F(2.81828203E-01 * C3), -F(1.94987841E-01 * C3), 441 F(6.13245186E-03 * C0), -F(7.76463494E-02 * C0), 442 F(2.88217274E-02 * C1), F(0.00000000E+00 * C1), 443 F(2.58767811E-02 * C2), -F(1.09137620E-02 * C2), 444 F(3.21939290E-02 * C3), -F(2.04385087E-02 * C3), 445 F(3.89205149E-03 * C0), -F(3.06012286E-03 * C0), 446 -F(1.86581691E-03 * C1), F(0.00000000E+00 * C1), 447 F(3.83720193E-03 * C2), F(0.00000000E+00 * C2), 448 F(2.73370904E-03 * C3), -F(5.36548976E-04 * C3), 449 #undef F 450 #define F(x) F_COS4(x) 451 F(0.9238795325 / C0), -F(1.0000000000 / C1), 452 F(0.3826834324 / C0), -F(1.0000000000 / C1), 453 -F(0.3826834324 / C0), -F(1.0000000000 / C1), 454 -F(0.9238795325 / C0), -F(1.0000000000 / C1), 455 F(0.7071067812 / C2), F(0.3826834324 / C3), 456 -F(0.7071067812 / C2), -F(0.9238795325 / C3), 457 -F(0.7071067812 / C2), F(0.9238795325 / C3), 458 F(0.7071067812 / C2), -F(0.3826834324 / C3), 459 #undef F 460 461 #undef C0 462 #undef C1 463 #undef C2 464 #undef C3 465 }; 466 467 static const FIXED_T SBC_ALIGNED analysis_consts_fixed8_simd_even[80 + 64] = { 468 #define C0 2.7906148894 469 #define C1 2.4270044280 470 #define C2 2.8015616024 471 #define C3 3.1710363741 472 #define C4 2.5377944043 473 #define C5 2.4270044280 474 #define C6 2.8015616024 475 #define C7 3.1710363741 476 477 #define F(x) F_PROTO8(x) 478 F(0.00000000E+00 * C0), F(2.01182542E-03 * C0), 479 F(1.56575398E-04 * C1), F(1.78371725E-03 * C1), 480 F(3.43256425E-04 * C2), F(1.47640169E-03 * C2), 481 F(5.54620202E-04 * C3), F(1.13992507E-03 * C3), 482 -F(8.23919506E-04 * C4), F(0.00000000E+00 * C4), 483 F(2.10371989E-03 * C5), F(3.49717454E-03 * C5), 484 F(1.99454554E-03 * C6), F(1.64973098E-03 * C6), 485 F(1.61656283E-03 * C7), F(1.78805361E-04 * C7), 486 F(5.65949473E-03 * C0), F(1.29371806E-02 * C0), 487 F(8.02941163E-03 * C1), F(1.53184106E-02 * C1), 488 F(1.04584443E-02 * C2), F(1.62208471E-02 * C2), 489 F(1.27472335E-02 * C3), F(1.59045603E-02 * C3), 490 -F(1.46525263E-02 * C4), F(0.00000000E+00 * C4), 491 F(8.85757540E-03 * C5), F(5.31873032E-02 * C5), 492 F(2.92408442E-03 * C6), F(3.90751381E-02 * C6), 493 -F(4.91578024E-03 * C7), F(2.61098752E-02 * C7), 494 F(6.79989431E-02 * C0), F(1.46955068E-01 * C0), 495 F(8.29847578E-02 * C1), F(1.45389847E-01 * C1), 496 F(9.75753918E-02 * C2), F(1.40753505E-01 * C2), 497 F(1.11196689E-01 * C3), F(1.33264415E-01 * C3), 498 -F(1.23264548E-01 * C4), F(0.00000000E+00 * C4), 499 F(1.45389847E-01 * C5), -F(8.29847578E-02 * C5), 500 F(1.40753505E-01 * C6), -F(9.75753918E-02 * C6), 501 F(1.33264415E-01 * C7), -F(1.11196689E-01 * C7), 502 -F(6.79989431E-02 * C0), F(1.29371806E-02 * C0), 503 -F(5.31873032E-02 * C1), F(8.85757540E-03 * C1), 504 -F(3.90751381E-02 * C2), F(2.92408442E-03 * C2), 505 -F(2.61098752E-02 * C3), -F(4.91578024E-03 * C3), 506 F(1.46404076E-02 * C4), F(0.00000000E+00 * C4), 507 F(1.53184106E-02 * C5), -F(8.02941163E-03 * C5), 508 F(1.62208471E-02 * C6), -F(1.04584443E-02 * C6), 509 F(1.59045603E-02 * C7), -F(1.27472335E-02 * C7), 510 -F(5.65949473E-03 * C0), F(2.01182542E-03 * C0), 511 -F(3.49717454E-03 * C1), F(2.10371989E-03 * C1), 512 -F(1.64973098E-03 * C2), F(1.99454554E-03 * C2), 513 -F(1.78805361E-04 * C3), F(1.61656283E-03 * C3), 514 -F(9.02154502E-04 * C4), F(0.00000000E+00 * C4), 515 F(1.78371725E-03 * C5), -F(1.56575398E-04 * C5), 516 F(1.47640169E-03 * C6), -F(3.43256425E-04 * C6), 517 F(1.13992507E-03 * C7), -F(5.54620202E-04 * C7), 518 #undef F 519 #define F(x) F_COS8(x) 520 F(0.7071067812 / C0), F(0.8314696123 / C1), 521 -F(0.7071067812 / C0), -F(0.1950903220 / C1), 522 -F(0.7071067812 / C0), -F(0.9807852804 / C1), 523 F(0.7071067812 / C0), -F(0.5555702330 / C1), 524 F(0.7071067812 / C0), F(0.5555702330 / C1), 525 -F(0.7071067812 / C0), F(0.9807852804 / C1), 526 -F(0.7071067812 / C0), F(0.1950903220 / C1), 527 F(0.7071067812 / C0), -F(0.8314696123 / C1), 528 F(0.9238795325 / C2), F(0.9807852804 / C3), 529 F(0.3826834324 / C2), F(0.8314696123 / C3), 530 -F(0.3826834324 / C2), F(0.5555702330 / C3), 531 -F(0.9238795325 / C2), F(0.1950903220 / C3), 532 -F(0.9238795325 / C2), -F(0.1950903220 / C3), 533 -F(0.3826834324 / C2), -F(0.5555702330 / C3), 534 F(0.3826834324 / C2), -F(0.8314696123 / C3), 535 F(0.9238795325 / C2), -F(0.9807852804 / C3), 536 -F(1.0000000000 / C4), F(0.5555702330 / C5), 537 -F(1.0000000000 / C4), -F(0.9807852804 / C5), 538 -F(1.0000000000 / C4), F(0.1950903220 / C5), 539 -F(1.0000000000 / C4), F(0.8314696123 / C5), 540 -F(1.0000000000 / C4), -F(0.8314696123 / C5), 541 -F(1.0000000000 / C4), -F(0.1950903220 / C5), 542 -F(1.0000000000 / C4), F(0.9807852804 / C5), 543 -F(1.0000000000 / C4), -F(0.5555702330 / C5), 544 F(0.3826834324 / C6), F(0.1950903220 / C7), 545 -F(0.9238795325 / C6), -F(0.5555702330 / C7), 546 F(0.9238795325 / C6), F(0.8314696123 / C7), 547 -F(0.3826834324 / C6), -F(0.9807852804 / C7), 548 -F(0.3826834324 / C6), F(0.9807852804 / C7), 549 F(0.9238795325 / C6), -F(0.8314696123 / C7), 550 -F(0.9238795325 / C6), F(0.5555702330 / C7), 551 F(0.3826834324 / C6), -F(0.1950903220 / C7), 552 #undef F 553 554 #undef C0 555 #undef C1 556 #undef C2 557 #undef C3 558 #undef C4 559 #undef C5 560 #undef C6 561 #undef C7 562 }; 563 564 static const FIXED_T SBC_ALIGNED analysis_consts_fixed8_simd_odd[80 + 64] = { 565 #define C0 2.5377944043 566 #define C1 2.4270044280 567 #define C2 2.8015616024 568 #define C3 3.1710363741 569 #define C4 2.7906148894 570 #define C5 2.4270044280 571 #define C6 2.8015616024 572 #define C7 3.1710363741 573 574 #define F(x) F_PROTO8(x) 575 F(0.00000000E+00 * C0), -F(8.23919506E-04 * C0), 576 F(1.56575398E-04 * C1), F(1.78371725E-03 * C1), 577 F(3.43256425E-04 * C2), F(1.47640169E-03 * C2), 578 F(5.54620202E-04 * C3), F(1.13992507E-03 * C3), 579 F(2.01182542E-03 * C4), F(5.65949473E-03 * C4), 580 F(2.10371989E-03 * C5), F(3.49717454E-03 * C5), 581 F(1.99454554E-03 * C6), F(1.64973098E-03 * C6), 582 F(1.61656283E-03 * C7), F(1.78805361E-04 * C7), 583 F(0.00000000E+00 * C0), -F(1.46525263E-02 * C0), 584 F(8.02941163E-03 * C1), F(1.53184106E-02 * C1), 585 F(1.04584443E-02 * C2), F(1.62208471E-02 * C2), 586 F(1.27472335E-02 * C3), F(1.59045603E-02 * C3), 587 F(1.29371806E-02 * C4), F(6.79989431E-02 * C4), 588 F(8.85757540E-03 * C5), F(5.31873032E-02 * C5), 589 F(2.92408442E-03 * C6), F(3.90751381E-02 * C6), 590 -F(4.91578024E-03 * C7), F(2.61098752E-02 * C7), 591 F(0.00000000E+00 * C0), -F(1.23264548E-01 * C0), 592 F(8.29847578E-02 * C1), F(1.45389847E-01 * C1), 593 F(9.75753918E-02 * C2), F(1.40753505E-01 * C2), 594 F(1.11196689E-01 * C3), F(1.33264415E-01 * C3), 595 F(1.46955068E-01 * C4), -F(6.79989431E-02 * C4), 596 F(1.45389847E-01 * C5), -F(8.29847578E-02 * C5), 597 F(1.40753505E-01 * C6), -F(9.75753918E-02 * C6), 598 F(1.33264415E-01 * C7), -F(1.11196689E-01 * C7), 599 F(0.00000000E+00 * C0), F(1.46404076E-02 * C0), 600 -F(5.31873032E-02 * C1), F(8.85757540E-03 * C1), 601 -F(3.90751381E-02 * C2), F(2.92408442E-03 * C2), 602 -F(2.61098752E-02 * C3), -F(4.91578024E-03 * C3), 603 F(1.29371806E-02 * C4), -F(5.65949473E-03 * C4), 604 F(1.53184106E-02 * C5), -F(8.02941163E-03 * C5), 605 F(1.62208471E-02 * C6), -F(1.04584443E-02 * C6), 606 F(1.59045603E-02 * C7), -F(1.27472335E-02 * C7), 607 F(0.00000000E+00 * C0), -F(9.02154502E-04 * C0), 608 -F(3.49717454E-03 * C1), F(2.10371989E-03 * C1), 609 -F(1.64973098E-03 * C2), F(1.99454554E-03 * C2), 610 -F(1.78805361E-04 * C3), F(1.61656283E-03 * C3), 611 F(2.01182542E-03 * C4), F(0.00000000E+00 * C4), 612 F(1.78371725E-03 * C5), -F(1.56575398E-04 * C5), 613 F(1.47640169E-03 * C6), -F(3.43256425E-04 * C6), 614 F(1.13992507E-03 * C7), -F(5.54620202E-04 * C7), 615 #undef F 616 #define F(x) F_COS8(x) 617 -F(1.0000000000 / C0), F(0.8314696123 / C1), 618 -F(1.0000000000 / C0), -F(0.1950903220 / C1), 619 -F(1.0000000000 / C0), -F(0.9807852804 / C1), 620 -F(1.0000000000 / C0), -F(0.5555702330 / C1), 621 -F(1.0000000000 / C0), F(0.5555702330 / C1), 622 -F(1.0000000000 / C0), F(0.9807852804 / C1), 623 -F(1.0000000000 / C0), F(0.1950903220 / C1), 624 -F(1.0000000000 / C0), -F(0.8314696123 / C1), 625 F(0.9238795325 / C2), F(0.9807852804 / C3), 626 F(0.3826834324 / C2), F(0.8314696123 / C3), 627 -F(0.3826834324 / C2), F(0.5555702330 / C3), 628 -F(0.9238795325 / C2), F(0.1950903220 / C3), 629 -F(0.9238795325 / C2), -F(0.1950903220 / C3), 630 -F(0.3826834324 / C2), -F(0.5555702330 / C3), 631 F(0.3826834324 / C2), -F(0.8314696123 / C3), 632 F(0.9238795325 / C2), -F(0.9807852804 / C3), 633 F(0.7071067812 / C4), F(0.5555702330 / C5), 634 -F(0.7071067812 / C4), -F(0.9807852804 / C5), 635 -F(0.7071067812 / C4), F(0.1950903220 / C5), 636 F(0.7071067812 / C4), F(0.8314696123 / C5), 637 F(0.7071067812 / C4), -F(0.8314696123 / C5), 638 -F(0.7071067812 / C4), -F(0.1950903220 / C5), 639 -F(0.7071067812 / C4), F(0.9807852804 / C5), 640 F(0.7071067812 / C4), -F(0.5555702330 / C5), 641 F(0.3826834324 / C6), F(0.1950903220 / C7), 642 -F(0.9238795325 / C6), -F(0.5555702330 / C7), 643 F(0.9238795325 / C6), F(0.8314696123 / C7), 644 -F(0.3826834324 / C6), -F(0.9807852804 / C7), 645 -F(0.3826834324 / C6), F(0.9807852804 / C7), 646 F(0.9238795325 / C6), -F(0.8314696123 / C7), 647 -F(0.9238795325 / C6), F(0.5555702330 / C7), 648 F(0.3826834324 / C6), -F(0.1950903220 / C7), 649 #undef F 650 651 #undef C0 652 #undef C1 653 #undef C2 654 #undef C3 655 #undef C4 656 #undef C5 657 #undef C6 658 #undef C7 659 }; 660
