code.delx.au - pulseaudio/blob - src/modules/bluetooth/sbc_tables.h

   1 /*
   2  *
   3  *  Bluetooth low-complexity, subband codec (SBC) library
   4  *
   5  *  Copyright (C) 2004-2009  Marcel Holtmann <marcel@holtmann.org>
   6  *  Copyright (C) 2004-2005  Henryk Ploetz <henryk@ploetzli.ch>
   7  *  Copyright (C) 2005-2006  Brad Midgley <bmidgley@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 };