aactab.c

     2.5198421,  4.3267487,
     6.3496042,  8.5498797,
    10.9027236, 13.3905183,
    16.0000000, 18.7207544,
    21.5443469, 24.4637810,
    27.4731418, 30.5673509,
    33.7419917, 36.9931811,
};

/*
 * bits  0:3, 4:7  index into _vals array
 *       8:9       bit mask of escape-coded entries
 *      12:15      number of non-zero values
 */
static const uint16_t codebook_vector10_idx[] = {
    0x0000, 0x1010, 0x1020, 0x1030, 0x1040, 0x1050, 0x1060, 0x1070,
    0x1080, 0x1090, 0x10a0, 0x10b0, 0x10c0, 0x10d0, 0x10e0, 0x10f0, 0x1200,
    0x1001, 0x2011, 0x2021, 0x2031, 0x2041, 0x2051, 0x2061, 0x2071,
    0x2081, 0x2091, 0x20a1, 0x20b1, 0x20c1, 0x20d1, 0x20e1, 0x20f1, 0x2201,
    0x1002, 0x2012, 0x2022, 0x2032, 0x2042, 0x2052, 0x2062, 0x2072,
    0x2082, 0x2092, 0x20a2, 0x20b2, 0x20c2, 0x20d2, 0x20e2, 0x20f2, 0x2202,
    0x1003, 0x2013, 0x2023, 0x2033, 0x2043, 0x2053, 0x2063, 0x2073,
    0x2083, 0x2093, 0x20a3, 0x20b3, 0x20c3, 0x20d3, 0x20e3, 0x20f3, 0x2203,
    0x1004, 0x2014, 0x2024, 0x2034, 0x2044, 0x2054, 0x2064, 0x2074,
    0x2084, 0x2094, 0x20a4, 0x20b4, 0x20c4, 0x20d4, 0x20e4, 0x20f4, 0x2204,
    0x1005, 0x2015, 0x2025, 0x2035, 0x2045, 0x2055, 0x2065, 0x2075,
    0x2085, 0x2095, 0x20a5, 0x20b5, 0x20c5, 0x20d5, 0x20e5, 0x20f5, 0x2205,
    0x1006, 0x2016, 0x2026, 0x2036, 0x2046, 0x2056, 0x2066, 0x2076,
    0x2086, 0x2096, 0x20a6, 0x20b6, 0x20c6, 0x20d6, 0x20e6, 0x20f6, 0x2206,
    0x1007, 0x2017, 0x2027, 0x2037, 0x2047, 0x2057, 0x2067, 0x2077,
    0x2087, 0x2097, 0x20a7, 0x20b7, 0x20c7, 0x20d7, 0x20e7, 0x20f7, 0x2207,
    0x1008, 0x2018, 0x2028, 0x2038, 0x2048, 0x2058, 0x2068, 0x2078,
    0x2088, 0x2098, 0x20a8, 0x20b8, 0x20c8, 0x20d8, 0x20e8, 0x20f8, 0x2208,
    0x1009, 0x2019, 0x2029, 0x2039, 0x2049, 0x2059, 0x2069, 0x2079,
    0x2089, 0x2099, 0x20a9, 0x20b9, 0x20c9, 0x20d9, 0x20e9, 0x20f9, 0x2209,
    0x100a, 0x201a, 0x202a, 0x203a, 0x204a, 0x205a, 0x206a, 0x207a,
    0x208a, 0x209a, 0x20aa, 0x20ba, 0x20ca, 0x20da, 0x20ea, 0x20fa, 0x220a,
    0x100b, 0x201b, 0x202b, 0x203b, 0x204b, 0x205b, 0x206b, 0x207b,
    0x208b, 0x209b, 0x20ab, 0x20bb, 0x20cb, 0x20db, 0x20eb, 0x20fb, 0x220b,
    0x100c, 0x201c, 0x202c, 0x203c, 0x204c, 0x205c, 0x206c, 0x207c,
    0x208c, 0x209c, 0x20ac, 0x20bc, 0x20cc, 0x20dc, 0x20ec, 0x20fc, 0x220c,
    0x100d, 0x201d, 0x202d, 0x203d, 0x204d, 0x205d, 0x206d, 0x207d,
    0x208d, 0x209d, 0x20ad, 0x20bd, 0x20cd, 0x20dd, 0x20ed, 0x20fd, 0x220d,
    0x100e, 0x201e, 0x202e, 0x203e, 0x204e, 0x205e, 0x206e, 0x207e,
    0x208e, 0x209e, 0x20ae, 0x20be, 0x20ce, 0x20de, 0x20ee, 0x20fe, 0x220e,
    0x100f, 0x201f, 0x202f, 0x203f, 0x204f, 0x205f, 0x206f, 0x207f,
    0x208f, 0x209f, 0x20af, 0x20bf, 0x20cf, 0x20df, 0x20ef, 0x20ff, 0x220f,
    0x1100, 0x2110, 0x2120, 0x2130, 0x2140, 0x2150, 0x2160, 0x2170,
    0x2180, 0x2190, 0x21a0, 0x21b0, 0x21c0, 0x21d0, 0x21e0, 0x21f0, 0x2300,
};

const float *const ff_aac_codebook_vector_vals[] = {
    codebook_vector0_vals,  codebook_vector0_vals,
    codebook_vector10_vals, codebook_vector10_vals,
    codebook_vector4_vals,  codebook_vector4_vals,
    codebook_vector10_vals, codebook_vector10_vals,
    codebook_vector10_vals, codebook_vector10_vals,
    codebook_vector10_vals,
};

const uint16_t *const ff_aac_codebook_vector_idx[] = {
    codebook_vector02_idx, codebook_vector02_idx,
    codebook_vector02_idx, codebook_vector02_idx,
    codebook_vector4_idx,  codebook_vector4_idx,
    codebook_vector6_idx,  codebook_vector6_idx,
    codebook_vector8_idx,  codebook_vector8_idx,
    codebook_vector10_idx,
};

/* @name swb_offsets
 * Sample offset into the window indicating the beginning of a scalefactor
 * window band
 *
 * scalefactor window band - term for scalefactor bands within a window,
 * given in Table 4.110 to Table 4.128.
 *
 * scalefactor band - a set of spectral coefficients which are scaled by one
 * scalefactor. In case of EIGHT_SHORT_SEQUENCE and grouping a scalefactor band
 * may contain several scalefactor window bands of corresponding frequency. For
 * all other window_sequences scalefactor bands and scalefactor window bands are
 * identical.
 * @{
 */

static const uint16_t swb_offset_1024_96[] = {
      0,   4,   8,  12,  16,  20,  24,  28,
     32,  36,  40,  44,  48,  52,  56,  64,
     72,  80,  88,  96, 108, 120, 132, 144,
    156, 172, 188, 212, 240, 276, 320, 384,
    448, 512, 576, 640, 704, 768, 832, 896,
    960, 1024
};

static const uint16_t swb_offset_128_96[] = {
    0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128
};

static const uint16_t swb_offset_1024_64[] = {
      0,   4,   8,  12,  16,  20,  24,  28,
     32,  36,  40,  44,  48,  52,  56,  64,
     72,  80,  88, 100, 112, 124, 140, 156,
    172, 192, 216, 240, 268, 304, 344, 384,
    424, 464, 504, 544, 584, 624, 664, 704,
    744, 784, 824, 864, 904, 944, 984, 1024
};

static const uint16_t swb_offset_1024_48[] = {
      0,   4,   8,  12,  16,  20,  24,  28,
     32,  36,  40,  48,  56,  64,  72,  80,
     88,  96, 108, 120, 132, 144, 160, 176,
    196, 216, 240, 264, 292, 320, 352, 384,
    416, 448, 480, 512, 544, 576, 608, 640,
    672, 704, 736, 768, 800, 832, 864, 896,
    928, 1024
};

static const uint16_t swb_offset_128_48[] = {
     0,   4,   8,  12,  16,  20,  28,  36,
    44,  56,  68,  80,  96, 112, 128
};

static const uint16_t swb_offset_1024_32[] = {
      0,   4,   8,  12,  16,  20,  24,  28,
     32,  36,  40,  48,  56,  64,  72,  80,
     88,  96, 108, 120, 132, 144, 160, 176,
    196, 216, 240, 264, 292, 320, 352, 384,
    416, 448, 480, 512, 544, 576, 608, 640,
    672, 704, 736, 768, 800, 832, 864, 896,
    928, 960, 992, 1024
};

static const uint16_t swb_offset_1024_24[] = {
      0,   4,   8,  12,  16,  20,  24,  28,
     32,  36,  40,  44,  52,  60,  68,  76,
     84,  92, 100, 108, 116, 124, 136, 148,
    160, 172, 188, 204, 220, 240, 260, 284,
    308, 336, 364, 396, 432, 468, 508, 552,
    600, 652, 704, 768, 832, 896, 960, 1024
};

static const uint16_t swb_offset_128_24[] = {
     0,   4,   8,  12,  16,  20,  24,  28,
    36,  44,  52,  64,  76,  92, 108, 128
};

static const uint16_t swb_offset_1024_16[] = {
      0,   8,  16,  24,  32,  40,  48,  56,
     64,  72,  80,  88, 100, 112, 124, 136,
    148, 160, 172, 184, 196, 212, 228, 244,
    260, 280, 300, 320, 344, 368, 396, 424,
    456, 492, 532, 572, 616, 664, 716, 772,
    832, 896, 960, 1024
};

static const uint16_t swb_offset_128_16[] = {
     0,   4,   8,  12,  16,  20,  24,  28,
    32,  40,  48,  60,  72,  88, 108, 128
};

static const uint16_t swb_offset_1024_8[] = {
      0,  12,  24,  36,  48,  60,  72,  84,
     96, 108, 120, 132, 144, 156, 172, 188,
    204, 220, 236, 252, 268, 288, 308, 328,
    348, 372, 396, 420, 448, 476, 508, 544,
    580, 620, 664, 712, 764, 820, 880, 944,
    1024
};

static const uint16_t swb_offset_128_8[] = {
     0,   4,   8,  12,  16,  20,  24,  28,
    36,  44,  52,  60,  72,  88, 108, 128
};

const uint16_t * const ff_swb_offset_1024[] = {
    swb_offset_1024_96, swb_offset_1024_96, swb_offset_1024_64,
    swb_offset_1024_48, swb_offset_1024_48, swb_offset_1024_32,
    swb_offset_1024_24, swb_offset_1024_24, swb_offset_1024_16,
    swb_offset_1024_16, swb_offset_1024_16, swb_offset_1024_8,
    swb_offset_1024_8
};

const uint16_t * const ff_swb_offset_128[] = {
    /* The last entry on the following row is swb_offset_128_64 but is a
       duplicate of swb_offset_128_96. */
    swb_offset_128_96, swb_offset_128_96, swb_offset_128_96,
    swb_offset_128_48, swb_offset_128_48, swb_offset_128_48,
    swb_offset_128_24, swb_offset_128_24, swb_offset_128_16,
    swb_offset_128_16, swb_offset_128_16, swb_offset_128_8,
    swb_offset_128_8
};

// @}

/* @name ff_tns_max_bands
 * The maximum number of scalefactor bands on which TNS can operate for the long
 * and short transforms respectively. The index to these tables is related to
 * the sample rate of the audio.
 * @{
 */
const uint8_t ff_tns_max_bands_1024[] = {
    31, 31, 34, 40, 42, 51, 46, 46, 42, 42, 42, 39, 39
};

const uint8_t ff_tns_max_bands_128[] = {
    9, 9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14
};
// @}