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| 4349 | Serge | 1 | /* |
| 2 | * ATRAC3 compatible decoder data |
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| 3 | * Copyright (c) 2006-2007 Maxim Poliakovski |
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| 4 | * Copyright (c) 2006-2007 Benjamin Larsson |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | /** |
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| 24 | * @file |
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| 25 | * ATRAC3 AKA RealAudio 8 compatible decoder data |
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| 26 | */ |
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| 27 | |||
| 28 | #ifndef AVCODEC_ATRAC3DATA_H |
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| 29 | #define AVCODEC_ATRAC3DATA_H |
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| 30 | |||
| 31 | #include |
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| 32 | |||
| 33 | /* VLC tables */ |
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| 34 | |||
| 35 | static const uint8_t huffcode1[9] = { |
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| 36 | 0x0, 0x4, 0x5, 0xC, 0xD, 0x1C, 0x1D, 0x1E, 0x1F |
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| 37 | }; |
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| 38 | |||
| 39 | static const uint8_t huffbits1[9] = { 1, 3, 3, 4, 4, 5, 5, 5, 5 }; |
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| 40 | |||
| 41 | static const uint8_t huffcode2[5] = { 0x0, 0x4, 0x5, 0x6, 0x7 }; |
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| 42 | |||
| 43 | static const uint8_t huffbits2[5] = { 1, 3, 3, 3, 3 }; |
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| 44 | |||
| 45 | static const uint8_t huffcode3[7] = { 0x0, 0x4, 0x5, 0xC, 0xD, 0xE, 0xF }; |
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| 46 | |||
| 47 | static const uint8_t huffbits3[7] = { 1, 3, 3, 4, 4, 4, 4 }; |
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| 48 | |||
| 49 | static const uint8_t huffcode4[9] = { |
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| 50 | 0x0, 0x4, 0x5, 0xC, 0xD, 0x1C, 0x1D, 0x1E, 0x1F |
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| 51 | }; |
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| 52 | |||
| 53 | static const uint8_t huffbits4[9] = { 1, 3, 3, 4, 4, 5, 5, 5, 5 }; |
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| 54 | |||
| 55 | static const uint8_t huffcode5[15] = { |
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| 56 | 0x00, 0x02, 0x03, 0x08, 0x09, 0x0A, 0x0B, 0x1C, |
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| 57 | 0x1D, 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x0D |
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| 58 | }; |
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| 59 | |||
| 60 | static const uint8_t huffbits5[15] = { |
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| 61 | 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 4, 4 |
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| 62 | }; |
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| 63 | |||
| 64 | static const uint8_t huffcode6[31] = { |
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| 65 | 0x00, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x14, |
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| 66 | 0x15, 0x16, 0x17, 0x18, 0x19, 0x34, 0x35, 0x36, |
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| 67 | 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x78, 0x79, 0x7A, |
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| 68 | 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, 0x08, 0x09 |
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| 69 | }; |
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| 70 | |||
| 71 | static const uint8_t huffbits6[31] = { |
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| 72 | 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, |
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| 73 | 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4 |
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| 74 | }; |
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| 75 | |||
| 76 | static const uint8_t huffcode7[63] = { |
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| 77 | 0x00, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, |
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| 78 | 0x0F, 0x10, 0x11, 0x24, 0x25, 0x26, 0x27, 0x28, |
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| 79 | 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, |
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| 80 | 0x31, 0x32, 0x33, 0x68, 0x69, 0x6A, 0x6B, 0x6C, |
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| 81 | 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, |
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| 82 | 0x75, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, |
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| 83 | 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, |
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| 84 | 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x02, 0x03 |
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| 85 | }; |
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| 86 | |||
| 87 | static const uint8_t huffbits7[63] = { |
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| 88 | 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, |
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| 89 | 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, |
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| 90 | 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, |
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| 91 | 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4 |
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| 92 | }; |
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| 93 | |||
| 94 | static const uint8_t huff_tab_sizes[7] = { |
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| 95 | 9, 5, 7, 9, 15, 31, 63, |
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| 96 | }; |
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| 97 | |||
| 98 | static const uint8_t* const huff_codes[7] = { |
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| 99 | huffcode1, huffcode2, huffcode3, huffcode4, huffcode5, huffcode6, huffcode7 |
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| 100 | }; |
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| 101 | |||
| 102 | static const uint8_t* const huff_bits[7] = { |
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| 103 | huffbits1, huffbits2, huffbits3, huffbits4, huffbits5, huffbits6, huffbits7, |
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| 104 | }; |
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| 105 | |||
| 106 | static const uint16_t atrac3_vlc_offs[9] = { |
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| 107 | 0, 512, 1024, 1536, 2048, 2560, 3072, 3584, 4096 |
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| 108 | }; |
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| 109 | |||
| 110 | /* selector tables */ |
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| 111 | |||
| 112 | static const uint8_t clc_length_tab[8] = { 0, 4, 3, 3, 4, 4, 5, 6 }; |
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| 113 | |||
| 114 | static const int8_t mantissa_clc_tab[4] = { 0, 1, -2, -1 }; |
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| 115 | |||
| 116 | static const int8_t mantissa_vlc_tab[18] = { |
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| 117 | 0, 0, 0, 1, 0, -1, 1, 0, -1, 0, 1, 1, 1, -1, -1, 1, -1, -1 |
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| 118 | }; |
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| 119 | |||
| 120 | |||
| 121 | /* tables for the scalefactor decoding */ |
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| 122 | |||
| 123 | static const float inv_max_quant[8] = { |
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| 124 | 0.0, 1.0 / 1.5, 1.0 / 2.5, 1.0 / 3.5, |
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| 125 | 1.0 / 4.5, 1.0 / 7.5, 1.0 / 15.5, 1.0 / 31.5 |
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| 126 | }; |
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| 127 | |||
| 128 | static const uint16_t subband_tab[33] = { |
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| 129 | 0, 8, 16, 24, 32, 40, 48, 56, |
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| 130 | 64, 80, 96, 112, 128, 144, 160, 176, |
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| 131 | 192, 224, 256, 288, 320, 352, 384, 416, |
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| 132 | 448, 480, 512, 576, 640, 704, 768, 896, |
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| 133 | 1024 |
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| 134 | }; |
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| 135 | |||
| 136 | /* joint stereo related tables */ |
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| 137 | static const float matrix_coeffs[8] = { |
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| 138 | 0.0, 2.0, 2.0, 2.0, 0.0, 0.0, 1.0, 1.0 |
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| 139 | }; |
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| 140 | |||
| 141 | #endif /* AVCODEC_ATRAC3DATA_H */ |