dcaenc.h 6.36 KB
Newer Older
Alexander E. Patrakov's avatar
Alexander E. Patrakov committed
1 2
/*
 * DCA encoder tables
Paul B Mahol's avatar
Paul B Mahol committed
3
 * Copyright (C) 2008-2012 Alexander E. Patrakov
Alexander E. Patrakov's avatar
Alexander E. Patrakov committed
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 *
 * 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
 */

#ifndef AVCODEC_DCAENC_H
#define AVCODEC_DCAENC_H

25 26
#include <stdint.h>

Paul B Mahol's avatar
Paul B Mahol committed
27 28 29 30
typedef struct {
    int32_t m;
    int32_t e;
} softfloat;
Alexander E. Patrakov's avatar
Alexander E. Patrakov committed
31

Paul B Mahol's avatar
Paul B Mahol committed
32 33 34 35 36 37 38 39 40
static const int sample_rates[] = {
    8000, 16000, 32000, 11025, 22050, 44100, 12000, 24000, 48000, 0,
};

static const uint8_t bitstream_sfreq[] = { 1, 2, 3, 6, 7, 8, 11, 12, 13 };

/* Auditory filter center frequencies and bandwidths, in Hz.
 * The last two are made up, because there is no scientific data.
 */
41
static const uint16_t fc[] = {
Paul B Mahol's avatar
Paul B Mahol committed
42 43 44 45
    50, 150, 250, 350, 450, 570, 700, 840, 1000, 1170, 1370, 1600, 1850, 2150,
    2500, 2900, 3400, 4000, 4800, 5800, 7000, 8500, 10500, 13500, 17000
};

46
static const uint16_t erb[] = {
Paul B Mahol's avatar
Paul B Mahol committed
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104
    80, 100, 100, 100, 110, 120, 140, 150, 160, 190, 210, 240, 280,
    320, 380, 450, 550, 700, 900, 1100, 1300, 1800, 2500, 3500, 4500
};

static const softfloat stepsize_inv[27] = {
    {0, 0}, {1342177360, 21}, {2147483647, 21}, {1342177360, 20},
    {1819901661, 20}, {2147483647, 20}, {1278263843, 19}, {1579032492, 19},
    {1412817763, 18}, {1220162327, 17}, {1118482133, 16}, {1917391412, 16},
    {1766017772, 15}, {1525212826, 14}, {1290553940, 13}, {2097179000, 13},
    {1677683200, 12}, {1497972244, 11}, {1310893147, 10}, {1165354136, 9},
    {1748031204, 9}, {1542092044, 8}, {1636178017, 7}, {1636178017, 6},
    {1636178017, 5}, {1636178017, 4}, {1636178017, 3},
};

static const softfloat scalefactor_inv[128] = {
    {2147483647, 1}, {2147483647, 1}, {2147483647, 2}, {2147483647, 2},
    {2147483647, 2}, {2147483647, 2}, {1431655765, 2}, {1431655765, 2},
    {1431655765, 2}, {2147483647, 3}, {2147483647, 3}, {1717986918, 3},
    {1431655765, 3}, {1227133513, 3}, {1227133513, 3}, {2147483647, 4},
    {1717986918, 4}, {1561806289, 4}, {1431655765, 4}, {1227133513, 4},
    {2147483647, 5}, {1908874353, 5}, {1717986918, 5}, {1493901668, 5},
    {1321528398, 5}, {1145324612, 5}, {2021161080, 6}, {1808407282, 6},
    {1561806289, 6}, {1374389534, 6}, {1227133513, 6}, {2147483647, 7},
    {1908874353, 7}, {1676084798, 7}, {1477838209, 7}, {1296593900, 7},
    {1145324612, 7}, {2021161080, 8}, {1773405851, 8}, {1561806289, 8},
    {1374389534, 8}, {1216273924, 8}, {2139127680, 9}, {1882725390, 9},
    {1660893697, 9}, {1462116526, 9}, {1287484341, 9}, {1135859119, 9},
    {1999112050, 10}, {1762037865, 10}, {1552982525, 10}, {1367551775, 10},
    {1205604855, 10}, {2124660150, 11}, {1871509153, 11}, {1648443220, 11},
    {1452459217, 11}, {1279990253, 11}, {1127704233, 11}, {1987368509, 12},
    {1750814693, 12}, {1542632939, 12}, {1359099663, 12}, {1197398995, 12},
    {2109880792, 13}, {1858853132, 13}, {1638006149, 13}, {1443165385, 13},
    {1271479187, 13}, {1120235993, 13}, {1973767086, 14}, {1739045674, 14},
    {1532153461, 14}, {1349922194, 14}, {1189384493, 14}, {2095804865, 15},
    {1846464029, 15}, {1626872524, 15}, {1433347133, 15}, {1262853884, 15},
    {1112619678, 15}, {1960569045, 16}, {1727349015, 16}, {1521881227, 16},
    {1340842289, 16}, {1181357555, 16}, {2081669156, 17}, {1834047752, 17},
    {1615889229, 17}, {1423675973, 17}, {1254322457, 17}, {1105123583, 17},
    {1947330755, 18}, {1715693602, 18}, {1511607799, 18}, {1331801790, 18},
    {1173384427, 18}, {2067616532, 19}, {1821667648, 19}, {1604980024, 19},
    {1414066955, 19}, {1245861410, 19}, {1097665748, 19}, {1934193616, 20},
    {1704119624, 20}, {1501412075, 20}, {1322817107, 20}, {1165466323, 20},
    {2053666205, 21}, {1809379407, 21}, {1594151671, 21}, {1404526328, 21},
    {1237455941, 21}, {1090259329, 21}, {1921143210, 22}, {1692621231, 22},
    {1491281857, 22}, {1313892269, 22}, {1157603482, 22}, {2039810470, 23},
    {1797172644, 23}, {1583396912, 23}, {1395050052, 23}, {1229107276, 23},
    {1082903494, 23}, {1082903494, 23}, {1082903494, 23}, {1082903494, 23},
};

/* manually derived from
 * Table B.5: Selection of quantization levels and codebooks
 */
static const int bit_consumption[27] = {
    -8, 28, 40, 48, 52, 60, 68, 76, 80, 96,
    112, 128, 144, 160, 176, 192, 208, 224, 240, 256,
    272, 288, 304, 320, 336, 352, 368,
};

105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
static const int8_t lfe_index[16] = {
    1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 1, 3, 2, 3
};

static const int8_t channel_reorder_lfe[16][9] = {
    { 0, -1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1, -1, -1, -1, -1, -1, -1 },
    { 0,  1,  3, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  4, -1, -1, -1, -1, -1 },
    { 0,  1,  3,  4, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  4,  5, -1, -1, -1, -1 },
    { 3,  4,  0,  1,  5,  6, -1, -1, -1 },
    { 2,  0,  1,  4,  5,  6, -1, -1, -1 },
    { 0,  6,  4,  5,  2,  3, -1, -1, -1 },
    { 4,  2,  5,  0,  1,  6,  7, -1, -1 },
    { 5,  6,  0,  1,  7,  3,  8,  4, -1 },
    { 4,  2,  5,  0,  1,  6,  8,  7, -1 },
};

static const int8_t channel_reorder_nolfe[16][9] = {
    { 0, -1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 0,  1, -1, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1, -1, -1, -1, -1, -1, -1 },
    { 0,  1,  2, -1, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  3, -1, -1, -1, -1, -1 },
    { 0,  1,  2,  3, -1, -1, -1, -1, -1 },
    { 2,  0,  1,  3,  4, -1, -1, -1, -1 },
    { 2,  3,  0,  1,  4,  5, -1, -1, -1 },
    { 2,  0,  1,  3,  4,  5, -1, -1, -1 },
    { 0,  5,  3,  4,  1,  2, -1, -1, -1 },
    { 3,  2,  4,  0,  1,  5,  6, -1, -1 },
    { 4,  5,  0,  1,  6,  2,  7,  3, -1 },
    { 3,  2,  4,  0,  1,  5,  7,  6, -1 },
};

Alexander E. Patrakov's avatar
Alexander E. Patrakov committed
147
#endif /* AVCODEC_DCAENC_H */