repositories / deb_ffmpeg.git / blame
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|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * MPEG Audio common tables | |
| 3 | * copyright (c) 2002 Fabrice Bellard | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | /** | |
| 23 | * @file | |
| 24 | * mpeg audio layer common tables. | |
| 25 | */ | |
| 26 | ||
| 27 | #include "mpegaudiodata.h" | |
| 28 | ||
| 29 | ||
| 30 | const uint16_t avpriv_mpa_bitrate_tab[2][3][15] = { | |
| 31 | { {0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448 }, | |
| 32 | {0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384 }, | |
| 33 | {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 } }, | |
| 34 | { {0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256}, | |
| 35 | {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160}, | |
| 36 | {0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160} | |
| 37 | } | |
| 38 | }; | |
| 39 | ||
| 40 | const uint16_t avpriv_mpa_freq_tab[3] = { 44100, 48000, 32000 }; | |
| 41 | ||
| 42 | /*******************************************************/ | |
| 43 | /* layer 2 tables */ | |
| 44 | ||
| 45 | const int ff_mpa_sblimit_table[5] = { 27 , 30 , 8, 12 , 30 }; | |
| 46 | ||
| 47 | const int ff_mpa_quant_steps[17] = { | |
| 48 | 3, 5, 7, 9, 15, | |
| 49 | 31, 63, 127, 255, 511, | |
| 50 | 1023, 2047, 4095, 8191, 16383, | |
| 51 | 32767, 65535 | |
| 52 | }; | |
| 53 | ||
| 54 | /* we use a negative value if grouped */ | |
| 55 | const int ff_mpa_quant_bits[17] = { | |
| 56 | -5, -7, 3, -10, 4, | |
| 57 | 5, 6, 7, 8, 9, | |
| 58 | 10, 11, 12, 13, 14, | |
| 59 | 15, 16 | |
| 60 | }; | |
| 61 | ||
| 62 | /* encoding tables which give the quantization index. Note how it is | |
| 63 | possible to store them efficiently ! */ | |
| 64 | static const unsigned char alloc_table_1[] = { | |
| 65 | 4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, | |
| 66 | 4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, | |
| 67 | 4, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, | |
| 68 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 69 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 70 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 71 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 72 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 73 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 74 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 75 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, | |
| 76 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 77 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 78 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 79 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 80 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 81 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 82 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 83 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 84 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 85 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 86 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 87 | 3, 0, 1, 2, 3, 4, 5, 16, | |
| 88 | 2, 0, 1, 16, | |
| 89 | 2, 0, 1, 16, | |
| 90 | 2, 0, 1, 16, | |
| 91 | 2, 0, 1, 16, | |
| 92 | 2, 0, 1, 16, | |
| 93 | 2, 0, 1, 16, | |
| 94 | 2, 0, 1, 16, | |
| 95 | }; | |
| 96 | ||
| 97 | static const unsigned char alloc_table_3[] = { | |
| 98 | 4, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
| 99 | 4, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
| 100 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 101 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 102 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 103 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 104 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 105 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 106 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 107 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 108 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 109 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 110 | }; | |
| 111 | ||
| 112 | static const unsigned char alloc_table_4[] = { | |
| 113 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
| 114 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
| 115 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
| 116 | 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
| 117 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 118 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 119 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 120 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 121 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 122 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 123 | 3, 0, 1, 3, 4, 5, 6, 7, | |
| 124 | 2, 0, 1, 3, | |
| 125 | 2, 0, 1, 3, | |
| 126 | 2, 0, 1, 3, | |
| 127 | 2, 0, 1, 3, | |
| 128 | 2, 0, 1, 3, | |
| 129 | 2, 0, 1, 3, | |
| 130 | 2, 0, 1, 3, | |
| 131 | 2, 0, 1, 3, | |
| 132 | 2, 0, 1, 3, | |
| 133 | 2, 0, 1, 3, | |
| 134 | 2, 0, 1, 3, | |
| 135 | 2, 0, 1, 3, | |
| 136 | 2, 0, 1, 3, | |
| 137 | 2, 0, 1, 3, | |
| 138 | 2, 0, 1, 3, | |
| 139 | 2, 0, 1, 3, | |
| 140 | 2, 0, 1, 3, | |
| 141 | 2, 0, 1, 3, | |
| 142 | 2, 0, 1, 3, | |
| 143 | }; | |
| 144 | ||
| 145 | const unsigned char * const ff_mpa_alloc_tables[5] = | |
| 146 | { alloc_table_1, alloc_table_1, alloc_table_3, alloc_table_3, alloc_table_4, }; |