blob: 5d91274f489316270b5437a96765cc2b70c04907
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] = { |
99 | huffcode1, huffcode2, huffcode3, huffcode4, huffcode5, huffcode6, huffcode7 |
100 | }; |
101 | |
102 | static const uint8_t* const huff_bits[7] = { |
103 | huffbits1, huffbits2, huffbits3, huffbits4, huffbits5, huffbits6, huffbits7, |
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 */ |
142 |