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      2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
      3 Redistribution and use in source and binary forms, with or without
      4 modification, are permitted provided that the following conditions
      5 are met:
      6 - Redistributions of source code must retain the above copyright notice,
      7 this list of conditions and the following disclaimer.
      8 - Redistributions in binary form must reproduce the above copyright
      9 notice, this list of conditions and the following disclaimer in the
     10 documentation and/or other materials provided with the distribution.
     11 - Neither the name of Internet Society, IETF or IETF Trust, nor the
     12 names of specific contributors, may be used to endorse or promote
     13 products derived from this software without specific prior written
     14 permission.
     15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25 POSSIBILITY OF SUCH DAMAGE.
     26 ***********************************************************************/
     27 
     28 #ifdef HAVE_CONFIG_H
     29 #include "config.h"
     30 #endif
     31 
     32 #include "tables.h"
     33 
     34 const opus_uint8 silk_LTP_per_index_iCDF[3] = {
     35        179,     99,      0
     36 };
     37 
     38 static const opus_uint8 silk_LTP_gain_iCDF_0[8] = {
     39         71,     56,     43,     30,     21,     12,      6,      0
     40 };
     41 
     42 static const opus_uint8 silk_LTP_gain_iCDF_1[16] = {
     43        199,    165,    144,    124,    109,     96,     84,     71,
     44         61,     51,     42,     32,     23,     15,      8,      0
     45 };
     46 
     47 static const opus_uint8 silk_LTP_gain_iCDF_2[32] = {
     48        241,    225,    211,    199,    187,    175,    164,    153,
     49        142,    132,    123,    114,    105,     96,     88,     80,
     50         72,     64,     57,     50,     44,     38,     33,     29,
     51         24,     20,     16,     12,      9,      5,      2,      0
     52 };
     53 
     54 const opus_int16 silk_LTP_gain_middle_avg_RD_Q14 = 12304;
     55 
     56 static const opus_uint8 silk_LTP_gain_BITS_Q5_0[8] = {
     57         15,    131,    138,    138,    155,    155,    173,    173
     58 };
     59 
     60 static const opus_uint8 silk_LTP_gain_BITS_Q5_1[16] = {
     61         69,     93,    115,    118,    131,    138,    141,    138,
     62        150,    150,    155,    150,    155,    160,    166,    160
     63 };
     64 
     65 static const opus_uint8 silk_LTP_gain_BITS_Q5_2[32] = {
     66        131,    128,    134,    141,    141,    141,    145,    145,
     67        145,    150,    155,    155,    155,    155,    160,    160,
     68        160,    160,    166,    166,    173,    173,    182,    192,
     69        182,    192,    192,    192,    205,    192,    205,    224
     70 };
     71 
     72 const opus_uint8 * const silk_LTP_gain_iCDF_ptrs[NB_LTP_CBKS] = {
     73     silk_LTP_gain_iCDF_0,
     74     silk_LTP_gain_iCDF_1,
     75     silk_LTP_gain_iCDF_2
     76 };
     77 
     78 const opus_uint8 * const silk_LTP_gain_BITS_Q5_ptrs[NB_LTP_CBKS] = {
     79     silk_LTP_gain_BITS_Q5_0,
     80     silk_LTP_gain_BITS_Q5_1,
     81     silk_LTP_gain_BITS_Q5_2
     82 };
     83 
     84 static const opus_int8 silk_LTP_gain_vq_0[8][5] =
     85 {
     86 {
     87          4,      6,     24,      7,      5
     88 },
     89 {
     90          0,      0,      2,      0,      0
     91 },
     92 {
     93         12,     28,     41,     13,     -4
     94 },
     95 {
     96         -9,     15,     42,     25,     14
     97 },
     98 {
     99          1,     -2,     62,     41,     -9
    100 },
    101 {
    102        -10,     37,     65,     -4,      3
    103 },
    104 {
    105         -6,      4,     66,      7,     -8
    106 },
    107 {
    108         16,     14,     38,     -3,     33
    109 }
    110 };
    111 
    112 static const opus_int8 silk_LTP_gain_vq_1[16][5] =
    113 {
    114 {
    115         13,     22,     39,     23,     12
    116 },
    117 {
    118         -1,     36,     64,     27,     -6
    119 },
    120 {
    121         -7,     10,     55,     43,     17
    122 },
    123 {
    124          1,      1,      8,      1,      1
    125 },
    126 {
    127          6,    -11,     74,     53,     -9
    128 },
    129 {
    130        -12,     55,     76,    -12,      8
    131 },
    132 {
    133         -3,      3,     93,     27,     -4
    134 },
    135 {
    136         26,     39,     59,      3,     -8
    137 },
    138 {
    139          2,      0,     77,     11,      9
    140 },
    141 {
    142         -8,     22,     44,     -6,      7
    143 },
    144 {
    145         40,      9,     26,      3,      9
    146 },
    147 {
    148         -7,     20,    101,     -7,      4
    149 },
    150 {
    151          3,     -8,     42,     26,      0
    152 },
    153 {
    154        -15,     33,     68,      2,     23
    155 },
    156 {
    157         -2,     55,     46,     -2,     15
    158 },
    159 {
    160          3,     -1,     21,     16,     41
    161 }
    162 };
    163 
    164 static const opus_int8 silk_LTP_gain_vq_2[32][5] =
    165 {
    166 {
    167         -6,     27,     61,     39,      5
    168 },
    169 {
    170        -11,     42,     88,      4,      1
    171 },
    172 {
    173         -2,     60,     65,      6,     -4
    174 },
    175 {
    176         -1,     -5,     73,     56,      1
    177 },
    178 {
    179         -9,     19,     94,     29,     -9
    180 },
    181 {
    182          0,     12,     99,      6,      4
    183 },
    184 {
    185          8,    -19,    102,     46,    -13
    186 },
    187 {
    188          3,      2,     13,      3,      2
    189 },
    190 {
    191          9,    -21,     84,     72,    -18
    192 },
    193 {
    194        -11,     46,    104,    -22,      8
    195 },
    196 {
    197         18,     38,     48,     23,      0
    198 },
    199 {
    200        -16,     70,     83,    -21,     11
    201 },
    202 {
    203          5,    -11,    117,     22,     -8
    204 },
    205 {
    206         -6,     23,    117,    -12,      3
    207 },
    208 {
    209          3,     -8,     95,     28,      4
    210 },
    211 {
    212        -10,     15,     77,     60,    -15
    213 },
    214 {
    215         -1,      4,    124,      2,     -4
    216 },
    217 {
    218          3,     38,     84,     24,    -25
    219 },
    220 {
    221          2,     13,     42,     13,     31
    222 },
    223 {
    224         21,     -4,     56,     46,     -1
    225 },
    226 {
    227         -1,     35,     79,    -13,     19
    228 },
    229 {
    230         -7,     65,     88,     -9,    -14
    231 },
    232 {
    233         20,      4,     81,     49,    -29
    234 },
    235 {
    236         20,      0,     75,      3,    -17
    237 },
    238 {
    239          5,     -9,     44,     92,     -8
    240 },
    241 {
    242          1,     -3,     22,     69,     31
    243 },
    244 {
    245         -6,     95,     41,    -12,      5
    246 },
    247 {
    248         39,     67,     16,     -4,      1
    249 },
    250 {
    251          0,     -6,    120,     55,    -36
    252 },
    253 {
    254        -13,     44,    122,      4,    -24
    255 },
    256 {
    257         81,      5,     11,      3,      7
    258 },
    259 {
    260          2,      0,      9,     10,     88
    261 }
    262 };
    263 
    264 const opus_int8 * const silk_LTP_vq_ptrs_Q7[NB_LTP_CBKS] = {
    265     (opus_int8 *)&silk_LTP_gain_vq_0[0][0],
    266     (opus_int8 *)&silk_LTP_gain_vq_1[0][0],
    267     (opus_int8 *)&silk_LTP_gain_vq_2[0][0]
    268 };
    269 
    270 /* Maximum frequency-dependent response of the pitch taps above,
    271    computed as max(abs(freqz(taps))) */
    272 static const opus_uint8 silk_LTP_gain_vq_0_gain[8] = {
    273       46,      2,     90,     87,     93,     91,     82,     98
    274 };
    275 
    276 static const opus_uint8 silk_LTP_gain_vq_1_gain[16] = {
    277      109,    120,    118,     12,    113,    115,    117,    119,
    278       99,     59,     87,    111,     63,    111,    112,     80
    279 };
    280 
    281 static const opus_uint8 silk_LTP_gain_vq_2_gain[32] = {
    282      126,    124,    125,    124,    129,    121,    126,     23,
    283      132,    127,    127,    127,    126,    127,    122,    133,
    284      130,    134,    101,    118,    119,    145,    126,     86,
    285      124,    120,    123,    119,    170,    173,    107,    109
    286 };
    287 
    288 const opus_uint8 * const silk_LTP_vq_gain_ptrs_Q7[NB_LTP_CBKS] = {
    289     &silk_LTP_gain_vq_0_gain[0],
    290     &silk_LTP_gain_vq_1_gain[0],
    291     &silk_LTP_gain_vq_2_gain[0]
    292 };
    293 
    294 const opus_int8 silk_LTP_vq_sizes[NB_LTP_CBKS] = {
    295     8, 16, 32
    296 };
    297