add multiple inclusion guards to headers
[libav.git] / libavcodec / atrac3data.h
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1/*
2 * Atrac 3 compatible decoder data
3 * Copyright (c) 2006-2007 Maxim Poliakovski
4 * Copyright (c) 2006-2007 Benjamin Larsson
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23/**
24 * @file atrac3data.h
25 * Atrac 3 AKA RealAudio 8 compatible decoder data
26 */
27
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28#ifndef AVCODEC_ATRAC3DATA_H
29#define AVCODEC_ATRAC3DATA_H
30
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31#include <stdint.h>
32
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33/* VLC tables */
34
35static const uint8_t huffcode1[9] = {
36 0x0,0x4,0x5,0xC,0xD,0x1C,0x1D,0x1E,0x1F,
37};
38
39static const uint8_t huffbits1[9] = {
40 1,3,3,4,4,5,5,5,5,
41};
42
43static const uint8_t huffcode2[5] = {
44 0x0,0x4,0x5,0x6,0x7,
45};
46
47static const uint8_t huffbits2[5] = {
48 1,3,3,3,3,
49};
50
51static const uint8_t huffcode3[7] = {
520x0,0x4,0x5,0xC,0xD,0xE,0xF,
53};
54
55static const uint8_t huffbits3[7] = {
56 1,3,3,4,4,4,4,
57};
58
59static const uint8_t huffcode4[9] = {
60 0x0,0x4,0x5,0xC,0xD,0x1C,0x1D,0x1E,0x1F,
61};
62
63static const uint8_t huffbits4[9] = {
64 1,3,3,4,4,5,5,5,5,
65};
66
67static const uint8_t huffcode5[15] = {
68 0x0,0x2,0x3,0x8,0x9,0xA,0xB,0x1C,0x1D,0x3C,0x3D,0x3E,0x3F,0xC,0xD,
69};
70
71static const uint8_t huffbits5[15] = {
72 2,3,3,4,4,4,4,5,5,6,6,6,6,4,4
73};
74
75static const uint8_t huffcode6[31] = {
76 0x0,0x2,0x3,0x4,0x5,0x6,0x7,0x14,0x15,0x16,0x17,0x18,0x19,0x34,0x35,
77 0x36,0x37,0x38,0x39,0x3A,0x3B,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,0x8,0x9,
78};
79
80static const uint8_t huffbits6[31] = {
81 3,4,4,4,4,4,4,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,4,4
82};
83
84static const uint8_t huffcode7[63] = {
85 0x0,0x8,0x9,0xA,0xB,0xC,0xD,0xE,0xF,0x10,0x11,0x24,0x25,0x26,0x27,0x28,
86 0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x68,0x69,0x6A,0x6B,0x6C,
87 0x6D,0x6E,0x6F,0x70,0x71,0x72,0x73,0x74,0x75,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,0xF2,
88 0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x2,0x3,
89};
90
91static const uint8_t huffbits7[63] = {
92 3,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,
93 7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,4,4
94};
95
96static const uint8_t huff_tab_sizes[7] = {
97 9, 5, 7, 9, 15, 31, 63,
98};
99
100static const uint8_t* huff_codes[7] = {
101 huffcode1,huffcode2,huffcode3,huffcode4,huffcode5,huffcode6,huffcode7,
102};
103
104static const uint8_t* huff_bits[7] = {
105 huffbits1,huffbits2,huffbits3,huffbits4,huffbits5,huffbits6,huffbits7,
106};
107
108/* selector tables */
109
110static const uint8_t CLCLengthTab[8] = {0, 4, 3, 3, 4, 4, 5, 6};
111static const int8_t seTab_0[4] = {0, 1, -2, -1};
112static const int8_t decTable1[18] = {0,0, 0,1, 0,-1, 1,0, -1,0, 1,1, 1,-1, -1,1, -1,-1};
113
114
115/* tables for the scalefactor decoding */
116
117static const float iMaxQuant[8] = {
118 0.0, 1.0/1.5, 1.0/2.5, 1.0/3.5, 1.0/4.5, 1.0/7.5, 1.0/15.5, 1.0/31.5
119};
120
121static const uint16_t subbandTab[33] = {
122 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224,
123 256, 288, 320, 352, 384, 416, 448, 480, 512, 576, 640, 704, 768, 896, 1024
124};
125
126/* transform data */
127
128static const float qmf_48tap_half[24] = {
129 -0.00001461907, -0.00009205479, -0.000056157569, 0.00030117269,
130 0.0002422519,-0.00085293897, -0.0005205574, 0.0020340169,
131 0.00078333891, -0.0042153862, -0.00075614988, 0.0078402944,
132 -0.000061169922, -0.01344162, 0.0024626821, 0.021736089,
133 -0.007801671, -0.034090221, 0.01880949, 0.054326009,
134 -0.043596379, -0.099384367, 0.13207909, 0.46424159
135};
136
137/* joint stereo related tables */
138static const float matrixCoeffs[8] = {0.0, 2.0, 2.0, 2.0, 0.0, 0.0, 1.0, 1.0};
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139
140#endif