FFmpeg
atrac3data.h
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1 /*
2  * ATRAC3 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
25  * ATRAC3 AKA RealAudio 8 compatible decoder data
26  */
27 
28 #ifndef AVCODEC_ATRAC3DATA_H
29 #define AVCODEC_ATRAC3DATA_H
30 
31 #include <stdint.h>
32 
33 /* VLC tables */
34 
35 static const uint8_t huffcode1[9] = {
36  0x0, 0x4, 0x5, 0xC, 0xD, 0x1C, 0x1D, 0x1E, 0x1F
37 };
38 
39 static const uint8_t huffbits1[9] = { 1, 3, 3, 4, 4, 5, 5, 5, 5 };
40 
41 static const uint8_t huffcode2[5] = { 0x0, 0x4, 0x5, 0x6, 0x7 };
42 
43 static const uint8_t huffbits2[5] = { 1, 3, 3, 3, 3 };
44 
45 static const uint8_t huffcode3[7] = { 0x0, 0x4, 0x5, 0xC, 0xD, 0xE, 0xF };
46 
47 static const uint8_t huffbits3[7] = { 1, 3, 3, 4, 4, 4, 4 };
48 
49 static const uint8_t huffcode4[9] = {
50  0x0, 0x4, 0x5, 0xC, 0xD, 0x1C, 0x1D, 0x1E, 0x1F
51 };
52 
53 static const uint8_t huffbits4[9] = { 1, 3, 3, 4, 4, 5, 5, 5, 5 };
54 
55 static const uint8_t huffcode5[15] = {
56  0x00, 0x02, 0x03, 0x08, 0x09, 0x0A, 0x0B, 0x1C,
57  0x1D, 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x0D
58 };
59 
60 static const uint8_t huffbits5[15] = {
61  2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 4, 4
62 };
63 
64 static const uint8_t huffcode6[31] = {
65  0x00, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x14,
66  0x15, 0x16, 0x17, 0x18, 0x19, 0x34, 0x35, 0x36,
67  0x37, 0x38, 0x39, 0x3A, 0x3B, 0x78, 0x79, 0x7A,
68  0x7B, 0x7C, 0x7D, 0x7E, 0x7F, 0x08, 0x09
69 };
70 
71 static const uint8_t huffbits6[31] = {
72  3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6,
73  6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4
74 };
75 
76 static const uint8_t huffcode7[63] = {
77  0x00, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
78  0x0F, 0x10, 0x11, 0x24, 0x25, 0x26, 0x27, 0x28,
79  0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30,
80  0x31, 0x32, 0x33, 0x68, 0x69, 0x6A, 0x6B, 0x6C,
81  0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74,
82  0x75, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2,
83  0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
84  0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x02, 0x03
85 };
86 
87 static const uint8_t huffbits7[63] = {
88  3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6,
89  6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7,
90  7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8,
91  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4
92 };
93 
94 static const uint8_t huff_tab_sizes[7] = {
95  9, 5, 7, 9, 15, 31, 63,
96 };
97 
98 static const uint8_t* const huff_codes[7] = {
100 };
101 
102 static const uint8_t* const huff_bits[7] = {
104 };
105 
106 static const uint16_t atrac3_vlc_offs[9] = {
107  0, 512, 1024, 1536, 2048, 2560, 3072, 3584, 4096
108 };
109 
110 /* selector tables */
111 
112 static const uint8_t clc_length_tab[8] = { 0, 4, 3, 3, 4, 4, 5, 6 };
113 
114 static const int8_t mantissa_clc_tab[4] = { 0, 1, -2, -1 };
115 
116 static const int8_t mantissa_vlc_tab[18] = {
117  0, 0, 0, 1, 0, -1, 1, 0, -1, 0, 1, 1, 1, -1, -1, 1, -1, -1
118 };
119 
120 
121 /* tables for the scalefactor decoding */
122 
123 static const float inv_max_quant[8] = {
124  0.0, 1.0 / 1.5, 1.0 / 2.5, 1.0 / 3.5,
125  1.0 / 4.5, 1.0 / 7.5, 1.0 / 15.5, 1.0 / 31.5
126 };
127 
128 static const uint16_t subband_tab[33] = {
129  0, 8, 16, 24, 32, 40, 48, 56,
130  64, 80, 96, 112, 128, 144, 160, 176,
131  192, 224, 256, 288, 320, 352, 384, 416,
132  448, 480, 512, 576, 640, 704, 768, 896,
133  1024
134 };
135 
136 /* joint stereo related tables */
137 static const float matrix_coeffs[8] = {
138  0.0, 2.0, 2.0, 2.0, 0.0, 0.0, 1.0, 1.0
139 };
140 
141 #endif /* AVCODEC_ATRAC3DATA_H */
static const uint8_t huffcode4[9]
Definition: atrac3data.h:49
static const uint16_t atrac3_vlc_offs[9]
Definition: atrac3data.h:106
static const uint8_t clc_length_tab[8]
Definition: atrac3data.h:112
static const uint8_t *const huff_codes[7]
Definition: atrac3data.h:98
static const uint8_t huffcode6[31]
Definition: atrac3data.h:64
static const uint8_t huffbits4[9]
Definition: atrac3data.h:53
static const uint8_t huffbits1[9]
Definition: atrac3data.h:39
static const uint8_t huffcode7[63]
Definition: atrac3data.h:76
static const uint8_t *const huff_bits[7]
Definition: atrac3data.h:102
uint8_t
static const int8_t mantissa_clc_tab[4]
Definition: atrac3data.h:114
static const float inv_max_quant[8]
Definition: atrac3data.h:123
static const uint8_t huffcode3[7]
Definition: atrac3data.h:45
static const uint8_t huffcode2[5]
Definition: atrac3data.h:41
static const uint8_t huffcode1[9]
Definition: atrac3data.h:35
static const uint8_t huffbits5[15]
Definition: atrac3data.h:60
static const uint8_t huffbits6[31]
Definition: atrac3data.h:71
static const uint16_t subband_tab[33]
Definition: atrac3data.h:128
static const int8_t mantissa_vlc_tab[18]
Definition: atrac3data.h:116
static const uint8_t huffbits3[7]
Definition: atrac3data.h:47
static const uint8_t huffbits7[63]
Definition: atrac3data.h:87
static const uint8_t huffbits2[5]
Definition: atrac3data.h:43
static const uint8_t huffcode5[15]
Definition: atrac3data.h:55
static const float matrix_coeffs[8]
Definition: atrac3data.h:137
static const uint8_t huff_tab_sizes[7]
Definition: atrac3data.h:94