ac3dec_data.c

ffmpeg移植到symbian的全部源代码

/*
 * AC3 and E-AC3 decoder tables
 * Copyright (c) 2007 Bartlomiej Wolowiec <[e-mail]>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file ac3dec_data.c
 * tables taken directly from AC3 spec.
 */

#include "ac3dec_data.h"
#include "ac3.h"

const uint8_t ff_eac3_hebap_tab[64] = {
    0, 1, 2, 3, 4, 5, 6, 7, 8, 8,
    8, 8, 9, 9, 9, 10, 10, 10, 10, 11,
    11, 11, 11, 12, 12, 12, 12, 13, 13, 13,
    13, 14, 14, 14, 14, 15, 15, 15, 15, 16,
    16, 16, 16, 17, 17, 17, 17, 18, 18, 18,
    18, 18, 18, 18, 18, 19, 19, 19, 19, 19,
    19, 19, 19, 19,
};

const uint8_t ff_eac3_bits_vs_hebap[20] = {
    0,  2,  3,  4,  5,  7,  8,  9,  3,  4,
    5,  6,  7,  8,  9, 10, 11, 12, 14, 16,
};

/**
 * Table E3.6, Gk=1
 * No gain (Gk=1) inverse quantization, remapping scale factors
 * ff_eac3_gaq_remap[hebap+8]
 */
const int16_t ff_eac3_gaq_remap_1[12] = {
    4681, 2185, 1057, 520, 258, 129, 64, 32, 16, 8, 2, 0
};

/**
 * Table E3.6, Gk=2 & Gk=4, A
 * Large mantissa inverse quantization, remapping scale factors
 * ff_eac3_gaq_remap_2_4_a[hebap-8][Gk=2,4]
 */
const int16_t ff_eac3_gaq_remap_2_4_a[9][2] = {
    { -10923, -4681 },
    { -14043, -6554 },
    { -15292, -7399 },
    { -15855, -7802 },
    { -16124, -7998 },
    { -16255, -8096 },
    { -16320, -8144 },
    { -16352, -8168 },
    { -16368, -8180 }
};

/**
 * Table E3.6, Gk=2 & Gk=4, B
 * Large mantissa inverse quantization, negative mantissa remapping offsets
 * ff_eac3_gaq_remap_3_4_b[hebap-8][Gk=2,4]
 */
const int16_t ff_eac3_gaq_remap_2_4_b[9][2] = {
    {  -5461, -1170},
    { -11703, -4915},
    { -14199, -6606},
    { -15327, -7412},
    { -15864, -7805},
    { -16126, -7999},
    { -16255, -8096},
    { -16320, -8144},
    { -16352, -8168}
};

static const int16_t vq_hebap1[4][6] = {
{   7167,    4739,    1106,    4269,   10412,    4820},
{  -5702,   -3187,  -14483,   -1392,   -2027,     849},
{    633,    6199,    7009,  -12779,   -2306,   -2636},
{  -1468,   -7031,    7592,   10617,   -5946,   -3062},
};
static const int16_t vq_hebap2[8][6] = {
{ -12073,     608,   -7019,     590,    4000,     869},
{   6692,   15689,   -6178,   -9239,     -74,     133},
{   1855,    -989,   20596,   -2920,   -4475,     225},
{  -1194,   -3901,    -821,   -6566,    -875,  -20298},
{  -2762,   -3181,   -4094,   -5623,  -16945,    9765},
{   1547,    6839,    1980,   20233,   -1071,   -4986},
{   6221,  -17915,   -5516,    6266,     358,    1162},
{   3753,   -1066,    4283,   -3227,   15928,   10186},
};
static const int16_t vq_hebap3[16][6] = {
{ -10028,   20779,   10982,   -4560,     798,     -68},
{  11050,   20490,   -6617,   -5342,   -1797,   -1631},
{   3977,    -542,    7118,   -1166,   18844,   14678},
{  -4320,     -96,   -7295,    -492,  -22050,   -4277},
{   2692,    5856,    5530,   21862,   -7212,   -5325},
{   -135,  -23391,     962,    8115,    -644,     382},
{  -1563,    3400,   -3299,    4693,   -6892,   22398},
{   3535,    3030,    7296,    6214,   20476,  -12099},
{     57,   -6823,    1848,  -22349,   -5919,    6823},
{   -821,   -3655,    -387,   -6253,   -1735,  -22373},
{  -6046,    1586,  -18890,  -14392,    9214,     705},
{  -5716,     264,  -17964,   14618,    7921,    -337},
{   -110,     108,       8,      74,     -89,     -50},
{   6612,   -1517,   21687,   -1658,   -7949,    -246},
{  21667,   -6335,   -8290,    -101,   -1349,     -22},
{ -22003,   -6476,    7974,     648,    2054,    -331},
};
static const int16_t vq_hebap4[32][6] = {
{   6636,   -4593,   14173,  -17297,  -16523,     864},
{   3658,   22540,     104,   -1763,     -84,       6},
{  21580,  -17815,   -7282,   -1575,   -2078,    -320},
{  -2233,   10017,   -2728,   14938,  -13640,  -17659},
{  -1564,  -17738,  -19161,   13735,    2757,    2951},
{   4520,    5510,    7393,   10799,   19231,  -13770},
{    399,    2976,   -1099,    5013,   -1159,   22095},
{   3624,   -2359,    4680,   -2238,   22702,    3765},
{  -4201,   -8285,   -6810,  -12390,  -18414,   15382},
{  -5198,   -6869,  -10047,   -8364,  -16022,  -20562},
{   -142,  -22671,    -368,    4391,    -464,     -13},
{    814,   -1118,   -1089,  -22019,      74,    1553},
{  -1618,   19222,  -17642,  -13490,     842,   -2309},
{   4689,   16490,   20813,  -15387,   -4164,   -3968},
{  -3308,   11214,  -13542,   13599,  -19473,   13770},
{   1817,     854,   21225,    -966,   -1643,    -268},
{  -2587,    -107,  -20154,     376,    1174,    -304},
{  -2919,     453,   -5390,     750,  -22034,    -978},
{ -19012,   16839,   10000,   -3580,    2211,    1459},
{   1363,   -2658,     -33,   -4067,    1165,  -21985},
{  -8592,   -2760,  -17520,  -15985,   14897,    1323},
{    652,   -9331,    3253,  -14622,   12181,   19692},
{  -6361,    5773,  -15395,   17291,   16590,   -2922},
{   -661,    -601,    1609,   22610,     992,   -1045},
{   4961,    9107,   11225,    7829,   16320,   18627},
{ -21872,   -1433,     138,    1470,   -1891,    -196},
{ -19499,  -18203,   11056,    -516,    2543,   -2249},
{  -1196,  -17574,   20150,   11462,    -401,    2619},
{   4638,   -8154,   11891,  -15759,   17615,  -14955},
{    -83,     278,     323,      55,    -154,     232},
{   7788,    1462,   18395,   15296,  -15763,   -1131},
};
static const int16_t vq_hebap5[128][6] = {
{  -3394,  -19730,    2963,    9590,    4660,   19673},
{ -15665,   -6405,   17671,    3860,   -8232,  -19429},
{   4467,     412,  -17873,   -8037,     691,  -17307},
{   3580,    2363,    6886,    3763,    6379,  -20522},
{ -17230,  -14133,   -1396,  -23939,    8373,  -12537},
{  -8073,  -21469,  -15638,    3214,    8105,   -5965},
{   4343,    5169,    2683,  -16822,   -5146,  -16558},
{   6348,  -10668,   12995,  -25500,  -22090,    4091},
{  -2880,   -8366,   -5968,  -17158,   -2638,   23132},
{  -5095,  -14281,  -22371,   21741,    3689,    2961},
{  -2443,  -17739,   25155,    2707,    1594,       7},
{ -18379,    9010,    4270,     731,    -426,    -640},
{ -23695,   24732,    5642,     612,    -308,    -964},
{   -767,    1268,     225,    1635,     173,     916},
{   5455,    6493,    4902,   10560,   23041,  -17140},
{  17219,  -21054,  -18716,    4936,   -3420,    3357},
{  -1390,   15488,  -21946,  -14611,    1339,     542},
{  -6866,   -2254,  -12070,   -3075,  -19981,  -20622},
{  -1803,   11775,    1343,    8917,     693,   24497},
{ -21610,    9462,    4681,    9254,   -7815,   15904},
{  -5559,   -3018,   -9169,   -1347,  -22547,   12868},
{   -366,    5076,   -1727,   20427,    -283,   -2923},
{  -1886,   -6313,    -939,   -2081,   -1399,    3513},
{  -3161,    -537,   -5075,   11268,   19396,     989},
{   2345,    4153,    5769,   -4273,     233,    -399},
{ -21894,   -1138,  -16474,    5902,    5488,   -3211},
{  10007,  -12530,   18829,   20932,   -1158,    1790},
{  -1165,    5014,   -1199,    6415,   -8418,  -21038},
{   1892,   -3534,    3815,   -5846,   16427,   20288},
{  -2664,  -11627,   -4147,  -18311,  -22710,   14848},
{  17256,   10419,    7764,   12040,   18956,    2525},
{ -21419,  -18685,  -10897,    4368,   -7051,    4539},
{  -1574,    2050,    5760,   24756,   15983,   17678},
{   -538,  -22867,   11067,   10301,     385,     528},
{  -8465,   -3025,  -16357,  -23237,   16491,    3654},
{   5840,     575,   11890,    1947,   25157,    6653},
{   6625,   -3516,   -1964,    3850,    -390,    -116},
{  18005,   20900,   14323,   -7621,  -10922,   11802},
{  -4857,   -2932,  -13334,   -7815,   21622,    2267},
{   -579,   -9431,    -748,  -21321,   12367,    8265},
{  -8317,    1375,  -17847,    2921,    9062,   22046},
{  18398,    8635,   -1503,   -2418,  -18295,  -14734},
{  -2987,   15129,   -3331,   22300,   13878,  -13639},
{   5874,  -19026,   15587,   11350,  -20738,    1971},
{   1581,   -6955,  -21440,    2455,      65,     414},
{    515,   -4468,    -665,   -4672,     125,  -19222},
{  21495,  -20301,   -1872,   -1926,    -211,   -1022},
{   5189,  -12250,   -1775,  -23550,   -4546,    5813},
{    321,   -6331,   14646,    6975,   -1773,     867},
{ -13814,    3180,    7927,     444,   19552,    3146},
{  -6660,   12252,   -1972,   17408,  -24280,  -12956},
{   -745,   14356,   -1107,   23742,   -9631,  -18344},
{  18284,   -7909,   -7531,   19118,    7721,  -12659},
{   1926,   15101,  -12848,    2153,   21631,    1864},
{  -2130,   23416,   17056,  -15597,   -1544,      87},
{   8314,  -11824,   14581,  -20591,    7891,   -2099},
{  19600,   22814,  -17304,   -2040,     285,   -3863},
{  -8214,  -18322,   10724,  -13744,  -13469,   -1666},
{  14351,    4880,  -20034,     964,   -4221,    -180},
{ -24598,  -16635,   19724,    5925,    4777,    4414},
{  -2495,   23493,  -16141,    2918,   -1038,   -2010},
{  18974,   -2540,   13343,    1405,   -6194,   -1136},
{   2489,   13670,   22638,   -7311,    -129,   -2792},
{ -13962,   16775,   23012,     728,    3397,     162},
{   3038,     993,    8774,  -21969,   -6609,     910},
{ -12444,  -22386,   -2626,   -5295,   19520,    9872},
{  -1911,  -18274,  -18506,  -14962,    4760,    7119},
{   8298,   -2978,   25886,    7660,   -7897,    1020},
{   6132,   15127,   18757,  -24370,   -6529,   -6627},
{   7924,   12125,   -9459,  -23962,    5502,     937},
{ -17056,   -5373,    2522,     327,    1129,    -390},
{  15774,   19955,  -10380,   11172,   -3107,   14853},
{ -11904,   -8091,  -17928,  -22287,  -17237,   -6803},
{ -12862,   -2172,   -6509,    5927,   12458,  -22355},
{   -497,     322,    1038,   -6643,   -5404,   20311},
{   1083,  -22984,   -8494,   12130,    -762,    2623},
{   5067,   19712,   -1901,     -30,    -325,      85},
{    987,   -5830,    4212,   -9030,    9121,  -25038},
{  -7868,    7284,  -12292,   12914,  -21592,   20941},
{  -1630,   -7694,   -2187,   -8525,   -5604,  -25196},
{  -6668,     388,  -22535,    1526,    9082,     193},
{  -7867,  -22308,    5163,     362,     944,    -259},
{   3824,  -11850,    7591,  -23176,   25342,   23771},
{ -10504,    4123,  -21111,   21173,   22439,    -838},
{  -4723,   21795,    6184,    -122,    1642,    -717},
{  24504,   19887,   -2043,     986,       7,     -55},
{ -27313,    -135,    2437,     259,      89,     307},
{  24446,   -3873,   -5391,    -820,   -2387,     361},
{   5529,    5784,   18682,     242,  -21896,   -4003},
{  22304,    4483,     722,  -12242,    7570,   15448},
{   8673,    3009,   20437,   21108,  -21100,   -3080},
{  -1132,    2705,   -1825,    5420,    -785,   18532},
{  16932,  -13517,  -16509,  -14858,  -20327,  -14221},
{   2219,    1380,   21474,   -1128,     327,      83},
{  -2177,   21517,   -3856,  -14180,    -204,   -2191},
{    953,   -9426,   15874,  -10710,   -3231,   21030},
{   -421,   -1377,     640,   -8239,  -20976,    2174},
{   4309,   18514,   -9100,  -18319,  -15518,    3704},
{  -5943,     449,   -8387,    1075,  -22210,   -4992},
{   2953,   12788,   18285,    1430,   14937,   21731},
{  -2913,     401,   -4739,  -20105,    1699,   -1147},
{   3449,    5241,    8853,   22134,   -7547,    1451},
{  -2154,    8584,   18120,  -15614,   19319,   -5991},
{   3501,    2841,    5897,    6397,    8630,   23018},
{   2467,    2956,     379,    5703,  -22047,   -2189},
{ -16963,    -594,   18822,   -5295,    1640,     774},
{   2896,   -1424,    3586,   -2292,   19910,   -1822},
{ -18575,   21219,  -14001,  -12573,   16466,     635},
{  -1998,  -19314,  -16527,   12208,  -16576,   -7854},
{  -9674,    1012,  -21645,    2883,  -12712,    2321},
{  -1005,     471,   -3629,    8045,  -11087,   25533},
{   4141,  -21472,   -2673,     756,    -663,    -523},
{   6490,    8531,   19289,   18949,    6092,   -9347},
{  16965,   24599,   14024,   10072,    -536,  -10438},
{  -8147,    2145,  -23028,  -17073,    5451,   -4401},
{ -14873,   20520,  -18303,   -9717,  -11885,  -17831},
{  -2290,  -14120,    2070,   22467,    1671,     725},
{  -8538,   14629,    3521,  -20577,    6673,    8200},
{  20248,    4410,   -1366,    -585,    1229,   -2449},
{   7467,   -7148,   13667,   -8246,   22392,  -17320},
{  -1932,    3875,   -9064,   -3812,     958,     265},
{  -4399,    2959,  -15911,   19598,    4954,   -1105},
{  18009,   -9923,  -18137,   -3862,   11178,    5821},
{ -14596,   -1227,    9660,   21619,   11228,  -11721},
{   -721,   -1700,     109,   -2142,      61,   -6772},