src/third_party/opus/silk/tables_LTP.c

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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "tables.h"

const opus_uint8 silk_LTP_per_index_iCDF[3] = {
       179,     99,      0
};

static const opus_uint8 silk_LTP_gain_iCDF_0[8] = {
        71,     56,     43,     30,     21,     12,      6,      0
};

static const opus_uint8 silk_LTP_gain_iCDF_1[16] = {
       199,    165,    144,    124,    109,     96,     84,     71,
        61,     51,     42,     32,     23,     15,      8,      0
};

static const opus_uint8 silk_LTP_gain_iCDF_2[32] = {
       241,    225,    211,    199,    187,    175,    164,    153,
       142,    132,    123,    114,    105,     96,     88,     80,
        72,     64,     57,     50,     44,     38,     33,     29,
        24,     20,     16,     12,      9,      5,      2,      0
};

static const opus_uint8 silk_LTP_gain_BITS_Q5_0[8] = {
        15,    131,    138,    138,    155,    155,    173,    173
};

static const opus_uint8 silk_LTP_gain_BITS_Q5_1[16] = {
        69,     93,    115,    118,    131,    138,    141,    138,
       150,    150,    155,    150,    155,    160,    166,    160
};

static const opus_uint8 silk_LTP_gain_BITS_Q5_2[32] = {
       131,    128,    134,    141,    141,    141,    145,    145,
       145,    150,    155,    155,    155,    155,    160,    160,
       160,    160,    166,    166,    173,    173,    182,    192,
       182,    192,    192,    192,    205,    192,    205,    224
};

const opus_uint8 * const silk_LTP_gain_iCDF_ptrs[NB_LTP_CBKS] = {
    silk_LTP_gain_iCDF_0,
    silk_LTP_gain_iCDF_1,
    silk_LTP_gain_iCDF_2
};

const opus_uint8 * const silk_LTP_gain_BITS_Q5_ptrs[NB_LTP_CBKS] = {
    silk_LTP_gain_BITS_Q5_0,
    silk_LTP_gain_BITS_Q5_1,
    silk_LTP_gain_BITS_Q5_2
};

static const opus_int8 silk_LTP_gain_vq_0[8][5] =
{
{
         4,      6,     24,      7,      5
},
{
         0,      0,      2,      0,      0
},
{
        12,     28,     41,     13,     -4
},
{
        -9,     15,     42,     25,     14
},
{
         1,     -2,     62,     41,     -9
},
{
       -10,     37,     65,     -4,      3
},
{
        -6,      4,     66,      7,     -8
},
{
        16,     14,     38,     -3,     33
}
};

static const opus_int8 silk_LTP_gain_vq_1[16][5] =
{
{
        13,     22,     39,     23,     12
},
{
        -1,     36,     64,     27,     -6
},
{
        -7,     10,     55,     43,     17
},
{
         1,      1,      8,      1,      1
},
{
         6,    -11,     74,     53,     -9
},
{
       -12,     55,     76,    -12,      8
},
{
        -3,      3,     93,     27,     -4
},
{
        26,     39,     59,      3,     -8
},
{
         2,      0,     77,     11,      9
},
{
        -8,     22,     44,     -6,      7
},
{
        40,      9,     26,      3,      9
},
{
        -7,     20,    101,     -7,      4
},
{
         3,     -8,     42,     26,      0
},
{
       -15,     33,     68,      2,     23
},
{
        -2,     55,     46,     -2,     15
},
{
         3,     -1,     21,     16,     41
}
};

static const opus_int8 silk_LTP_gain_vq_2[32][5] =
{
{
        -6,     27,     61,     39,      5
},
{
       -11,     42,     88,      4,      1
},
{
        -2,     60,     65,      6,     -4
},
{
        -1,     -5,     73,     56,      1
},
{
        -9,     19,     94,     29,     -9
},
{
         0,     12,     99,      6,      4
},
{
         8,    -19,    102,     46,    -13
},
{
         3,      2,     13,      3,      2
},
{
         9,    -21,     84,     72,    -18
},
{
       -11,     46,    104,    -22,      8
},
{
        18,     38,     48,     23,      0
},
{
       -16,     70,     83,    -21,     11
},
{
         5,    -11,    117,     22,     -8
},
{
        -6,     23,    117,    -12,      3
},
{
         3,     -8,     95,     28,      4
},
{
       -10,     15,     77,     60,    -15
},
{
        -1,      4,    124,      2,     -4
},
{
         3,     38,     84,     24,    -25
},
{
         2,     13,     42,     13,     31
},
{
        21,     -4,     56,     46,     -1
},
{
        -1,     35,     79,    -13,     19
},
{
        -7,     65,     88,     -9,    -14
},
{
        20,      4,     81,     49,    -29
},
{
        20,      0,     75,      3,    -17
},
{
         5,     -9,     44,     92,     -8
},
{
         1,     -3,     22,     69,     31
},
{
        -6,     95,     41,    -12,      5
},
{
        39,     67,     16,     -4,      1
},
{
         0,     -6,    120,     55,    -36
},
{
       -13,     44,    122,      4,    -24
},
{
        81,      5,     11,      3,      7
},
{
         2,      0,      9,     10,     88
}
};

const opus_int8 * const silk_LTP_vq_ptrs_Q7[NB_LTP_CBKS] = {
    (opus_int8 *)&silk_LTP_gain_vq_0[0][0],
    (opus_int8 *)&silk_LTP_gain_vq_1[0][0],
    (opus_int8 *)&silk_LTP_gain_vq_2[0][0]
};

/* Maximum frequency-dependent response of the pitch taps above,
   computed as max(abs(freqz(taps))) */
static const opus_uint8 silk_LTP_gain_vq_0_gain[8] = {
      46,      2,     90,     87,     93,     91,     82,     98
};

static const opus_uint8 silk_LTP_gain_vq_1_gain[16] = {
     109,    120,    118,     12,    113,    115,    117,    119,
      99,     59,     87,    111,     63,    111,    112,     80
};

static const opus_uint8 silk_LTP_gain_vq_2_gain[32] = {
     126,    124,    125,    124,    129,    121,    126,     23,
     132,    127,    127,    127,    126,    127,    122,    133,
     130,    134,    101,    118,    119,    145,    126,     86,
     124,    120,    123,    119,    170,    173,    107,    109
};

const opus_uint8 * const silk_LTP_vq_gain_ptrs_Q7[NB_LTP_CBKS] = {
    &silk_LTP_gain_vq_0_gain[0],
    &silk_LTP_gain_vq_1_gain[0],
    &silk_LTP_gain_vq_2_gain[0]
};

const opus_int8 silk_LTP_vq_sizes[NB_LTP_CBKS] = {
    8, 16, 32
};