| Line |
Branch |
Exec |
Source |
| 1 |
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/* |
| 2 |
|
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* Siren audio decoder |
| 3 |
|
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* Copyright (c) 2012 Youness Alaoui <kakaroto@kakaroto.homelinux.net> |
| 4 |
|
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* Copyright (c) 2018 Paul B Mahol |
| 5 |
|
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* Copyright (c) 2019 Lynne <dev@lynne.ee> |
| 6 |
|
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* |
| 7 |
|
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* This file is part of FFmpeg. |
| 8 |
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* |
| 9 |
|
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* FFmpeg is free software; you can redistribute it and/or |
| 10 |
|
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* modify it under the terms of the GNU Lesser General Public |
| 11 |
|
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* License as published by the Free Software Foundation; either |
| 12 |
|
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* version 2.1 of the License, or (at your option) any later version. |
| 13 |
|
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* |
| 14 |
|
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* FFmpeg is distributed in the hope that it will be useful, |
| 15 |
|
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 |
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 |
|
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* Lesser General Public License for more details. |
| 18 |
|
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* |
| 19 |
|
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* You should have received a copy of the GNU Lesser General Public |
| 20 |
|
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* License along with FFmpeg; if not, write to the Free Software |
| 21 |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 |
|
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*/ |
| 23 |
|
|
|
| 24 |
|
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#include "libavutil/channel_layout.h" |
| 25 |
|
|
#include "libavutil/tx.h" |
| 26 |
|
|
#include "libavutil/float_dsp.h" |
| 27 |
|
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#include "libavutil/mem_internal.h" |
| 28 |
|
|
|
| 29 |
|
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#include "avcodec.h" |
| 30 |
|
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#include "codec_internal.h" |
| 31 |
|
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#include "get_bits.h" |
| 32 |
|
|
#include "internal.h" |
| 33 |
|
|
#include "mathops.h" |
| 34 |
|
|
|
| 35 |
|
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static const uint8_t index_table[8] = {4, 4, 3, 3, 2, 2, 1, 0}; |
| 36 |
|
|
static const uint8_t vector_dimension[8] = { 2, 2, 2, 4, 4, 5, 5, 1 }; |
| 37 |
|
|
static const uint8_t number_of_vectors[8] = { 10, 10, 10, 5, 5, 4, 4, 20 }; |
| 38 |
|
|
static const uint8_t expected_bits_table[8] = { 52, 47, 43, 37, 29, 22, 16, 0 }; |
| 39 |
|
|
static const int8_t differential_decoder_tree[27][24][2] = { |
| 40 |
|
|
{ |
| 41 |
|
|
{1, 2}, {3, 4}, {5, 6}, {7, 8}, {9, 10}, {11, -12}, {-11, -10}, {-8, -9}, {-7, -6}, {-13, 12}, |
| 42 |
|
|
{-5, -4}, {0, 13}, {-3, -14}, {-2, 14}, {-1, 15}, {-15, 16}, {-16, 17}, {-17, 18}, {19, 20}, |
| 43 |
|
|
{21, 22}, {-18, -19}, {-20, -21}, {-22, -23}, {-32, -32} |
| 44 |
|
|
}, |
| 45 |
|
|
{ |
| 46 |
|
|
{1, 2}, {3, 4}, {5, 6}, {7, 8}, {-10, -9}, {-8, -11}, {-7, -6}, {9, -5}, {10, -12}, {-4, 11}, |
| 47 |
|
|
{-13, -3}, {12, -2}, {13, -14}, {-1, 14}, {15, -15}, {0, 16}, {-16, 17}, {-17, 18}, {-18, 19}, |
| 48 |
|
|
{20, 21},{22, -19}, {-20, -21}, {-22, -23}, {-32, -32} |
| 49 |
|
|
}, |
| 50 |
|
|
{ |
| 51 |
|
|
{1, 2}, {3, 4}, {5, 6}, {7, 8}, {9, 10}, {-12, 11}, {-11, -13}, {-10, -9}, {12, -14}, {-8, -7}, |
| 52 |
|
|
{-15, -6}, {13, -5}, {-16, -4}, {14, -17}, {15, -3}, {16, -18}, {-2, 17}, {18, -19}, {-1, 19}, |
| 53 |
|
|
{-20, 20}, {0, 21}, {22, -21}, {-22, -23}, {-32, -32} |
| 54 |
|
|
}, |
| 55 |
|
|
{ |
| 56 |
|
|
{1, 2}, {3, 4}, {5, 6}, {-11, -10}, {7, -12}, {8, -9}, {9, -13}, {-14, 10}, {-8, -15}, {-16, 11}, |
| 57 |
|
|
{-7, 12}, {-17, -6}, {13, 14}, {-18, 15}, {-5, -4}, {16, 17}, {-3, -2}, {-19, 18}, {-1, 19}, |
| 58 |
|
|
{-20, 20}, {21, 22}, {0, -21}, {-22, -23}, {-32, -32} |
| 59 |
|
|
}, |
| 60 |
|
|
{ |
| 61 |
|
|
{1, 2}, {3, 4}, {5, 6}, {-12, -11}, {-13, 7}, {8, -14}, {-10, 9}, {10, -15}, {-9, 11}, {-8, 12}, |
| 62 |
|
|
{-16, 13}, {-7, -6}, {-17, 14}, {-5, -18}, {15, -4}, {16, -19}, {17, -3}, {-20, 18}, {-2, 19}, |
| 63 |
|
|
{-21, 20}, {0, 21}, {22, -1}, {-22, -23}, {-32, -32} |
| 64 |
|
|
}, |
| 65 |
|
|
{ |
| 66 |
|
|
{1, 2}, {3, 4}, {5, 6}, {-11, 7}, {-12, -10}, {-13, -9}, {8, 9}, {-14, -8}, {10, -15}, {-7, 11}, |
| 67 |
|
|
{-16, 12}, {-6, -17}, {13, 14}, {-5, 15}, {-18, 16}, {-4, 17}, {-3, -19}, {18, -2}, {-20, 19}, |
| 68 |
|
|
{-1, 20}, {0, 21}, {22, -21}, {-22, -23}, {-32, -32} |
| 69 |
|
|
}, |
| 70 |
|
|
{ |
| 71 |
|
|
{1, 2}, {3, 4}, {5, -12}, {6, -11}, {-10, -13}, {-9, 7}, {8, -14}, {9, -8}, {-15, 10}, {-7, -16}, |
| 72 |
|
|
{11, -6}, {12, -17}, {13, -5}, {-18, 14}, {15, -4}, {-19, 16}, {17, -3}, {-20, 18}, {19, 20}, |
| 73 |
|
|
{21, 22}, {0, -2}, {-1, -21}, {-22, -23}, {-32, -32} |
| 74 |
|
|
}, |
| 75 |
|
|
{ |
| 76 |
|
|
{1, 2}, {3, 4}, {5, -12}, {6, -13}, {-11, -10}, {7, -14}, {8, -9}, {9, -15}, {-8, 10}, {-7, -16}, |
| 77 |
|
|
{11, 12}, {-6, -17}, {-5, 13}, {14, 15}, {-18, -4}, {-19, 16}, {-3, 17}, {18, -2}, {-20, 19}, |
| 78 |
|
|
{20, 21}, {22, 0}, {-1, -21}, {-22, -23}, {-32, -32} |
| 79 |
|
|
}, |
| 80 |
|
|
{ |
| 81 |
|
|
{1, 2}, {3, 4}, {5, 6}, {-11, -10}, {-12, -9}, {7, 8}, {-13, -8}, {9, -14}, {-7, 10}, {-6, -15}, |
| 82 |
|
|
{11, 12}, {-5, -16}, {13, 14}, {-17, 15}, {-4, 16}, {17, -18}, {18, -3}, {-2, 19}, {-1, 0}, |
| 83 |
|
|
{-19, 20}, {-20, 21}, {22, -21}, {-22, -23}, {-32, -32} |
| 84 |
|
|
}, |
| 85 |
|
|
{ |
| 86 |
|
|
{1, 2}, {3, 4}, {5, 6}, {-11, 7}, {-10, -12}, {-9, 8}, {-8, -13}, {9, -7}, {10, -14}, {-6, 11}, |
| 87 |
|
|
{-15, 12}, {-5, 13}, {-16, -4}, {14, 15}, {-17, -3}, {-18, 16}, {17, -19}, {-2, 18}, {-20, 19}, |
| 88 |
|
|
{-1, 20}, {21, 22}, {0, -21}, {-22, -23}, {-32, -32} |
| 89 |
|
|
}, |
| 90 |
|
|
{ |
| 91 |
|
|
{1, 2}, {3, 4}, {5, -12}, {6, -11}, {7, 8}, {-10, -13}, {-9, 9}, {-8, -14}, {10, -7}, {11, -15}, |
| 92 |
|
|
{-6, 12}, {-5, 13}, {-4, -16}, {14, 15}, {-3, -17}, {16, 17}, {-18, -2}, {18, -19}, {-1, 19}, |
| 93 |
|
|
{-20, 20}, {-21, 21}, {22, 0}, {-22, -23}, {-32, -32} |
| 94 |
|
|
}, |
| 95 |
|
|
{ |
| 96 |
|
|
{1, 2}, {3, 4}, {5, -12}, {-13, 6}, {-11, 7}, {-14, 8}, {-10, 9}, {-15, -9}, {-8, 10}, {-7, -16}, |
| 97 |
|
|
{11, -6}, {12, -5}, {-17, 13}, {14, -18}, {15, -4}, {16, -19}, {17, -3}, {18, -2}, {19, -1}, |
| 98 |
|
|
{-20, 20}, {21, 22}, {0, -21}, {-22, -23}, {-32, -32} |
| 99 |
|
|
}, |
| 100 |
|
|
{ |
| 101 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 102 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 103 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 104 |
|
|
}, |
| 105 |
|
|
{ |
| 106 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 107 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 108 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 109 |
|
|
}, |
| 110 |
|
|
{ |
| 111 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 112 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 113 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 114 |
|
|
}, |
| 115 |
|
|
{ |
| 116 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 117 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 118 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 119 |
|
|
}, |
| 120 |
|
|
{ |
| 121 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 122 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 123 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 124 |
|
|
}, |
| 125 |
|
|
{ |
| 126 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 127 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 128 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 129 |
|
|
}, |
| 130 |
|
|
{ |
| 131 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 132 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 133 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 134 |
|
|
}, |
| 135 |
|
|
{ |
| 136 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 137 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 138 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 139 |
|
|
}, |
| 140 |
|
|
{ |
| 141 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 142 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 143 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 144 |
|
|
}, |
| 145 |
|
|
{ |
| 146 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 147 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 148 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 149 |
|
|
}, |
| 150 |
|
|
{ |
| 151 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 152 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 153 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 154 |
|
|
}, |
| 155 |
|
|
{ |
| 156 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 157 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 158 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 159 |
|
|
}, |
| 160 |
|
|
{ |
| 161 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 162 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 163 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 164 |
|
|
}, |
| 165 |
|
|
{ |
| 166 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 167 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 168 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 169 |
|
|
}, |
| 170 |
|
|
{ |
| 171 |
|
|
{1, 2}, {3, 4}, {-12, 5}, {-11, -13}, {6, -14}, {-10, 7}, {8, -15}, {-9, 9}, {-16, 10}, {-8, -17}, |
| 172 |
|
|
{11, 12}, {-7, -18}, {-6, 13}, {14, -5}, {15, -19}, {-4, 16}, {-20, 17}, {18, 19}, {20, 21}, |
| 173 |
|
|
{22, 0}, {-1, -3}, {-2, -21}, {-22, -23}, {-32, -32} |
| 174 |
|
|
}, |
| 175 |
|
|
}; |
| 176 |
|
|
|
| 177 |
|
|
static const uint16_t decoder_tree0[360] = { |
| 178 |
|
|
2, 1, 4, 6, 8, 10, 12, 14, 16, 18, 33, 3, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 35, 40, |
| 179 |
|
|
42, 44, 46, 5, 48, 65, 50, 52, 54, 56, 58, 60, 62, 64, 37, 66, 67, 68, 97, 70, 72, 74, 7, |
| 180 |
|
|
76, 78, 80, 82, 84, 86, 88, 99, 90, 39, 92, 94, 96, 129, 98, 9, 100, 102, 104, 106, 108, |
| 181 |
|
|
110, 112, 41, 161, 69, 114, 116, 118, 131, 120, 122, 11, 124, 126, 128, 193, 130, 132, 71, |
| 182 |
|
|
134, 43, 136, 138, 140, 163, 101, 13, 142, 144, 146, 148, 150, 152, 154, 225, 156, 158, 195, |
| 183 |
|
|
160, 162, 45, 164, 15, 166, 73, 168, 170, 133, 47, 172, 257, 174, 176, 178, 75, 103, 180, 165, |
| 184 |
|
|
182, 17, 227, 184, 105, 49, 135, 186, 289, 188, 259, 190, 192, 194, 196, 198, 291, 77, 200, |
| 185 |
|
|
202, 197, 107, 204, 19, 51, 229, 206, 167, 208, 210, 212, 214, 21, 79, 81, 109, 216, 218, 220, |
| 186 |
|
|
222, 53, 137, 224, 199, 226, 323, 321, 169, 228, 111, 230, 232, 139, 261, 234, 83, 236, 201, |
| 187 |
|
|
238, 240, 293, 242, 353, 231, 141, 244, 246, 113, 23, 355, 85, 248, 55, 115, 250, 263, 252, |
| 188 |
|
|
254, 203, 171, 256, 258, 233, 235, 143, 357, 325, 260, 295, 262, 173, 145, 177, 87, 264, 327, |
| 189 |
|
|
267, 266, 268, 175, 270, 272, 117, 297, 274, 265, 147, 179, 205, 276, 207, 237, 269, 278, 57, |
| 190 |
|
|
59, 387, 209, 280, 282, 149, 329, 385, 284, 25, 286, 239, 119, 288, 27, 290, 292, 299, 294, 359, |
| 191 |
|
|
89, 296, 298, 419, 181, 300, 331, 271, 417, 211, 361, 151, 389, 241, 302, 304, 303, 306, 308, |
| 192 |
|
|
421, 91, 310, 312, 391, 314, 121, 316, 333, 318, 275, 213, 301, 243, 183, 335, 320, 363, 322, |
| 193 |
|
|
215, 324, 393, 273, 337, 153, 326, 423, 365, 328, 367, 247, 395, 185, 123, 330, 425, 245, 155, |
| 194 |
|
|
332, 334, 305, 397, 336, 277, 217, 338, 340, 339, 427, 342, 344, 346, 307, 399, 187, 348, 309, |
| 195 |
|
|
341, 350, 369, 279, 311, 429, 249, 219, 352, 354, 356, 358, 431, 373, 401, 371, 313, 281, 433, |
| 196 |
|
|
343, 403, 251, 283 |
| 197 |
|
|
}; |
| 198 |
|
|
|
| 199 |
|
|
static const uint16_t decoder_tree1[188] = { |
| 200 |
|
|
2, 1, 4, 6, 8, 10, 12, 14, 16, 3, 33, 18, 20, 22, 24, 26, 35, 28, 30, 32, 34, 36, 5, 65, 38, 40, |
| 201 |
|
|
37, 42, 44, 46, 67, 48, 50, 52, 54, 56, 58, 60, 7, 62, 39, 97, 64, 69, 66, 99, 68, 70, 72, 74, 76, |
| 202 |
|
|
78, 80, 129, 41, 131, 82, 9, 71, 84, 86, 101, 88, 90, 92, 94, 96, 161, 43, 11, 73, 98, 103, 100, |
| 203 |
|
|
163, 102, 104, 106, 108, 133, 110, 105, 112, 75, 114, 45, 13, 116, 165, 118, 195, 135, 193, 120, 77, |
| 204 |
|
|
122, 47, 124, 167, 225, 126, 79, 107, 227, 128, 137, 197, 15, 130, 169, 199, 132, 109, 134, 17, 139, |
| 205 |
|
|
49, 136, 229, 138, 140, 81, 259, 142, 144, 171, 146, 141, 148, 111, 150, 201, 231, 152, 51, 257, 289, |
| 206 |
|
|
154, 19, 113, 156, 261, 158, 203, 173, 263, 143, 160, 291, 235, 83, 162, 233, 265, 164, 205, 166, 293, |
| 207 |
|
|
145, 168, 175, 177, 237, 115, 295, 170, 207, 172, 267, 174, 176, 297, 147, 178, 180, 269, 182, 271, |
| 208 |
|
|
209, 299, 239, 179, 184, 301, 241, 211, 0, 0 |
| 209 |
|
|
}; |
| 210 |
|
|
|
| 211 |
|
|
static const uint16_t decoder_tree2[96] = { |
| 212 |
|
|
2, 1, 4, 6, 8, 10, 12, 3, 17, 14, 19, 16, 18, 20, 22, 24, 26, 5, 21, 35, 33, 28, 30, 32, 34, 36, 38, 37, |
| 213 |
|
|
40, 23, 51, 42, 7, 49, 44, 46, 48, 50, 39, 53, 52, 54, 56, 25, 67, 9, 58, 60, 65, 55, 41, 62, 64, 69, 66, |
| 214 |
|
|
11, 27, 68, 57, 83, 70, 71, 81, 43, 72, 74, 13, 76, 85, 29, 73, 78, 99, 59, 87, 101, 80, 97, 45, 82, 84, |
| 215 |
|
|
75, 89, 61, 86, 103, 88, 77, 90, 105, 91, 92, 107, 93, 0, 0 |
| 216 |
|
|
}; |
| 217 |
|
|
|
| 218 |
|
|
static const uint16_t decoder_tree3[1040] = { |
| 219 |
|
|
2, 4, 6, 8, 10, 1, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 3, 36, 1025, 38, 40, 42, 44, 46, 48, 50, |
| 220 |
|
|
129, 17, 52, 54, 1153, 19, 56, 58, 60, 62, 64, 66, 68, 145, 70, 72, 74, 76, 78, 1169, 1027, 147, 80, 82, 1171, |
| 221 |
|
|
84, 86, 131, 88, 1155, 1043, 1041, 90, 92, 5, 94, 96, 98, 100, 102, 104, 21, 106, 108, 2049, 2177, 110, 112, 114, |
| 222 |
|
|
116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 33, 144, 163, 146, 148, 150, 152, 154, 161, |
| 223 |
|
|
156, 35, 158, 1297, 160, 162, 273, 257, 164, 166, 149, 168, 1281, 170, 172, 2193, 174, 176, 178, 1299, 180, 1045, |
| 224 |
|
|
182, 184, 1173, 186, 3201, 188, 190, 192, 194, 2195, 1187, 23, 2179, 196, 7, 198, 275, 200, 2051, 202, 2065, 204, |
| 225 |
|
|
206, 1029, 1185, 208, 210, 1157, 37, 3073, 2067, 133, 212, 214, 2321, 216, 165, 218, 1059, 220, 1283, 222, 2305, |
| 226 |
|
|
224, 226, 228, 230, 259, 232, 234, 2323, 236, 1409, 1057, 1315, 238, 240, 242, 244, 246, 1425, 248, 1313, 250, 252, |
| 227 |
|
|
254, 256, 258, 260, 289, 262, 264, 1189, 266, 268, 179, 151, 270, 272, 274, 276, 278, 291, 280, 282, 9, 385, 284, |
| 228 |
|
|
286, 177, 49, 401, 1061, 288, 290, 292, 51, 294, 296, 298, 300, 302, 304, 25, 306, 2083, 39, 308, 310, 3329, 167, |
| 229 |
|
|
312, 314, 1175, 316, 318, 1203, 135, 320, 322, 324, 326, 328, 2211, 2307, 330, 1301, 332, 334, 1047, 336, 338, 2449, |
| 230 |
|
|
3217, 340, 1427, 2209, 53, 342, 2339, 3345, 344, 346, 348, 403, 181, 4097, 2197, 350, 2181, 1285, 1317, 1031, 352, |
| 231 |
|
|
354, 356, 3089, 358, 360, 4225, 277, 362, 364, 366, 368, 2069, 370, 3203, 293, 1201, 305, 372, 3219, 307, 2433, 374, |
| 232 |
|
|
376, 378, 380, 2081, 1411, 382, 384, 3075, 1443, 513, 386, 387, 388, 390, 1331, 261, 392, 394, 396, 398, 400, 1441, |
| 233 |
|
|
1075, 67, 1159, 402, 404, 406, 408, 410, 412, 414, 3347, 2325, 416, 65, 418, 420, 422, 424, 426, 2053, 193, 1073, 428, |
| 234 |
|
|
430, 432, 1537, 1329, 2337, 2213, 434, 417, 183, 41, 436, 438, 440, 442, 444, 446, 448, 450, 195, 2435, 452, 2085, 1063, |
| 235 |
|
|
1191, 454, 456, 458, 460, 419, 2071, 1553, 3091, 55, 137, 462, 464, 466, 468, 470, 472, 474, 476, 478, 2309, 4113, 480, |
| 236 |
|
|
482, 484, 486, 2451, 2465, 1205, 153, 488, 490, 492, 494, 496, 498, 500, 502, 504, 506, 508, 510, 512, 514, 516, 518, |
| 237 |
|
|
520, 522, 524, 1333, 526, 1555, 2467, 2227, 3205, 3331, 528, 530, 532, 534, 536, 538, 540, 542, 544, 546, 548, 529, 309, |
| 238 |
|
|
1303, 3473, 3457, 389, 1569, 1445, 1077, 69, 2199, 1539, 4353, 550, 552, 554, 556, 558, 560, 562, 1459, 4241, 3221, 1429, |
| 239 |
|
|
2341, 279, 3475, 169, 564, 545, 3105, 323, 2353, 2097, 3235, 421, 2229, 3107, 3233, 566, 568, 570, 572, 574, 576, 578, |
| 240 |
|
|
580, 582, 584, 586, 588, 590, 592, 594, 596, 2099, 1091, 531, 2437, 4227, 405, 197, 263, 1287, 2577, 1049, 1571, 598, 600, |
| 241 |
|
|
602, 604, 606, 608, 610, 612, 614, 616, 618, 620, 622, 624, 626, 628, 630, 632, 634, 636, 638, 640, 642, 644, 646, 648, 650, |
| 242 |
|
|
1345, 1219, 3077, 1457, 2225, 2579, 515, 2561, 2469, 433, 1221, 2183, 4243, 652, 654, 656, 658, 660, 662, 664, 666, 668, |
| 243 |
|
|
670, 1217, 3333, 3093, 435, 321, 4369, 1089, 2055, 4099, 3361, 1319, 547, 1161, 1177, 672, 2355, 4115, 1413, 4257, 3349, |
| 244 |
|
|
2453, 3109, 2357, 2215, 3363, 1079, 1207, 311, 1033, 1347, 1065, 674, 676, 678, 680, 682, 684, 686, 688, 690, 692, 694, 696, |
| 245 |
|
|
698, 700, 702, 704, 706, 708, 710, 712, 714, 716, 718, 720, 722, 724, 726, 728, 730, 732, 734, 736, 738, 740, 742, 744, 746, |
| 246 |
|
|
748, 750, 752, 754, 756, 758, 760, 762, 764, 766, 768, 770, 772, 774, 776, 778, 780, 782, 784, 786, 788, 790, 792, 794, 796, |
| 247 |
|
|
798, 800, 802, 804, 806, 808, 810, 812, 814, 2593, 2565, 4261, 3253, 437, 325, 3489, 2311, 4259, 1431, 2087, 2563, 295, 2343, |
| 248 |
|
|
449, 199, 265, 2201, 4371, 1193, 816, 533, 1557, 2581, 2241, 3365, 3491, 3603, 549, 2101, 1461, 1093, 2117, 3459, 3079, 4481, |
| 249 |
|
|
3095, 2327, 3461, 4129, 3249, 1447, 2471, 2231, 71, 4497, 2609, 1289, 393, 3251, 2073, 3097, 2371, 1305, 2089, 818, 820, 822, |
| 250 |
|
|
824, 826, 828, 830, 832, 834, 836, 838, 840, 842, 844, 846, 848, 850, 852, 854, 856, 858, 860, 862, 864, 866, 868, 870, 872, |
| 251 |
|
|
874, 876, 878, 880, 882, 884, 886, 888, 890, 892, 894, 896, 898, 900, 902, 904, 906, 908, 910, 912, 914, 916, 918, 920, 922, |
| 252 |
|
|
924, 926, 928, 930, 932, 934, 936, 938, 940, 942, 944, 946, 948, 950, 952, 954, 956, 958, 960, 962, 964, 966, 968, 970, 972, |
| 253 |
|
|
974, 976, 978, 980, 982, 984, 986, 988, 990, 992, 994, 996, 998, 1000, 1002, 1004, 1006, 1008, 1010, 1012, 1014, 1016, 1018, |
| 254 |
|
|
1020, 1022, 1024, 1026, 1028, 1030, 1032, 1034, 1036, 4161, 4273, 3507, 3493, 4517, 2497, 1573, 2597, 3621, 4531, 4627, 3523, |
| 255 |
|
|
3125, 4149, 4529, 3139, 4515, 451, 4277, 2113, 4163, 4499, 3381, 4405, 1473, 4373, 2485, 3509, 565, 1589, 2613, 3585, 3123, |
| 256 |
|
|
4403, 3141, 4147, 563, 2245, 3269, 4357, 1349, 2373, 3397, 453, 1477, 2501, 2481, 579, 1601, 3477, 4103, 3265, 2243, 1587, |
| 257 |
|
|
3207, 4231, 3267, 4501, 1475, 3335, 4359, 391, 1415, 2439, 3463, 4487, 519, 1543, 2567, 3591, 4609, 4289, 4611, 2499, 4119, |
| 258 |
|
|
4385, 4145, 4401, 3223, 4247, 3379, 577, 3393, 3351, 4375, 407, 1585, 2455, 3479, 4503, 535, 1559, 2583, 3607, 3605, 4513, |
| 259 |
|
|
4485, 3111, 4135, 3121, 517, 3377, 3239, 4263, 1541, 4291, 4229, 3367, 4391, 423, 2115, 4131, 3495, 551, 1575, 2599, 3635, 3395, |
| 260 |
|
|
2103, 3127, 4151, 3589, 4101, 1603, 3255, 4279, 3601, 1335, 2359, 3383, 439, 1463, 2487, 3511, 567, 1591, 4133, 1095, 2119, 3143, |
| 261 |
|
|
2369, 1223, 2247, 3271, 327, 1351, 2375, 455, 1479, 3137, 3521, 2057, 3081, 4105, 4387, 3505, 2185, 3209, 4233, 3587, 4355, 2313, |
| 262 |
|
|
3337, 3237, 1417, 2441, 3465, 521, 1545, 3617, 3633, 561, 4625, 4121, 2611, 2483, 2595, 3225, 4249, 281, 4245, 2329, 3353, 409, |
| 263 |
|
|
1433, 2457, 3481, 537, 1561, 4483, 3619, 4389, 3113, 4275, 4117, 2217, 3241, 297, 1321, 2345, 3369, 425, 1449, 2473, 57, 1081, |
| 264 |
|
|
2105, 3129, 185, 1209, 2233, 3257, 313, 1337, 2361, 441, 1465, 73, 1097, 201, 1225, 0, 0 |
| 265 |
|
|
}; |
| 266 |
|
|
|
| 267 |
|
|
static const uint16_t decoder_tree4[416] = { |
| 268 |
|
|
2, 4, 6, 1, 8, 10, 12, 14, 16, 18, 20, 22, 24, 3, 129, 26, 28, 9, 33, 30, 32, |
| 269 |
|
|
34, 36, 11, 161, 38, 40, 42, 41, 44, 46, 131, 43, 169, 35, 48, 137, 50, 52, 54, 56, 139, |
| 270 |
|
|
163, 171, 58, 60, 62, 64, 5, 66, 68, 70, 257, 72, 74, 76, 13, 78, 80, 289, 82, 84, 17, |
| 271 |
|
|
86, 88, 65, 90, 201, 19, 92, 94, 51, 193, 96, 98, 49, 100, 73, 102, 104, 106, 45, 108, 110, |
| 272 |
|
|
297, 112, 114, 116, 37, 203, 118, 120, 179, 122, 177, 124, 265, 126, 75, 133, 259, 291, 147, 128, 67, |
| 273 |
|
|
195, 130, 141, 173, 299, 132, 145, 134, 165, 136, 138, 140, 142, 7, 144, 146, 21, 267, 148, 53, 150, |
| 274 |
|
|
321, 152, 154, 15, 156, 81, 158, 160, 385, 162, 417, 164, 166, 168, 83, 170, 172, 329, 174, 211, 176, |
| 275 |
|
|
27, 178, 180, 182, 209, 184, 186, 188, 190, 25, 192, 331, 194, 196, 105, 57, 198, 97, 200, 202, 323, |
| 276 |
|
|
225, 59, 149, 204, 206, 233, 307, 208, 77, 181, 210, 212, 214, 216, 218, 220, 222, 47, 224, 226, 69, |
| 277 |
|
|
228, 230, 197, 232, 425, 393, 205, 275, 293, 39, 234, 236, 238, 305, 135, 155, 301, 143, 240, 242, 235, |
| 278 |
|
|
395, 244, 246, 248, 250, 252, 254, 256, 258, 260, 262, 273, 269, 185, 264, 266, 268, 270, 272, 274, 276, |
| 279 |
|
|
261, 153, 278, 280, 282, 187, 337, 387, 107, 284, 427, 227, 167, 419, 286, 288, 290, 292, 294, 296, 298, |
| 280 |
|
|
300, 302, 304, 306, 308, 310, 312, 314, 316, 318, 320, 322, 324, 326, 328, 330, 332, 334, 336, 338, 115, |
| 281 |
|
|
99, 85, 213, 29, 113, 23, 89, 241, 61, 449, 339, 175, 340, 342, 344, 346, 348, 350, 352, 354, 356, |
| 282 |
|
|
358, 360, 362, 364, 366, 368, 370, 372, 374, 376, 378, 380, 382, 384, 386, 388, 390, 392, 394, 396, 398, |
| 283 |
|
|
400, 402, 404, 406, 408, 410, 412, 414, 389, 361, 457, 465, 429, 451, 333, 109, 277, 243, 263, 295, 199, |
| 284 |
|
|
283, 151, 55, 183, 229, 357, 363, 123, 491, 397, 411, 251, 313, 441, 467, 345, 433, 461, 219, 237, 365, |
| 285 |
|
|
435, 353, 347, 405, 409, 217, 309, 437, 369, 371, 341, 117, 245, 249, 157, 285, 403, 189, 317, 93, 221, |
| 286 |
|
|
315, 401, 481, 391, 489, 121, 421, 423, 71, 483, 327, 103, 231, 443, 459, 271, 399, 355, 91, 303, 431, |
| 287 |
|
|
79, 207, 335, 111, 239, 281, 325, 279, 453, 101, 311, 87, 215, 31, 159, 63, 191 |
| 288 |
|
|
}; |
| 289 |
|
|
|
| 290 |
|
|
static const uint16_t decoder_tree5[384] = { |
| 291 |
|
|
2, 4, 1, 6, 8, 10, 12, 14, 16, 18, 20, 22, 3, 513, 24, 26, 28, 9, 129, 33, 30, 32, 34, 36, 38, 40, 11, 42, 641, 44, 46, 41, |
| 292 |
|
|
161, 48, 515, 50, 52, 131, 54, 35, 545, 137, 56, 58, 60, 521, 62, 43, 673, 64, 169, 66, 68, 523, 70, 163, 643, 139, 553, 72, 649, 74, 547, |
| 293 |
|
|
76, 78, 80, 681, 171, 82, 84, 555, 86, 675, 88, 651, 5, 90, 92, 1025, 94, 96, 98, 683, 13, |
| 294 |
|
|
100, 17, 102, 104, 106, 65, 108, 110, 257, 112, 114, 1153, 19, 116, 118, 120, 122, 124, 49, 126, 128, |
| 295 |
|
|
769, 289, 130, 132, 134, 73, 136, 138, 140, 142, 193, 144, 146, 148, 150, 152, 154, 517, 156, 158, 37, |
| 296 |
|
|
51, 160, 201, 162, 145, 164, 166, 168, 133, 170, 801, 45, 172, 174, 1057, 176, 178, 67, 180, 1027, 577, |
| 297 |
|
|
182, 184, 186, 188, 190, 192, 194, 196, 198, 259, 200, 202, 204, 525, 177, 265, 141, 206, 208, 210, 212, |
| 298 |
|
|
195, 297, 214, 75, 216, 1033, 203, 585, 1155, 1185, 267, 1161, 549, 218, 220, 657, 777, 147, 222, 224, 226, |
| 299 |
|
|
228, 230, 232, 234, 236, 238, 240, 587, 645, 165, 242, 244, 246, 248, 250, 771, 291, 252, 579, 1065, 1035, |
| 300 |
|
|
705, 531, 529, 659, 173, 254, 561, 653, 256, 713, 677, 557, 258, 260, 262, 264, 266, 268, 270, 272, 274, |
| 301 |
|
|
276, 278, 280, 282, 284, 286, 288, 290, 292, 294, 296, 298, 300, 707, 1059, 809, 715, 563, 179, 691, 1193, |
| 302 |
|
|
21, 779, 1067, 299, 1187, 302, 304, 306, 308, 310, 312, 314, 316, 318, 320, 322, 324, 326, 328, 330, 332, |
| 303 |
|
|
334, 336, 338, 340, 342, 344, 346, 348, 350, 352, 354, 356, 358, 360, 362, 364, 366, 368, 370, 372, 374, |
| 304 |
|
|
376, 378, 380, 83, 69, 1281, 803, 321, 1195, 1163, 811, 1323, 689, 1321, 1099, 305, 835, 1227, 331, 843, 785, |
| 305 |
|
|
593, 1043, 1291, 1283, 1171, 275, 787, 1217, 833, 1075, 1313, 1219, 1203, 307, 819, 841, 595, 211, 723, 721, 817, |
| 306 |
|
|
1029, 329, 81, 1157, 261, 773, 1097, 1089, 1061, 1169, 1091, 1189, 293, 805, 1201, 581, 197, 709, 1289, 273, 1037, |
| 307 |
|
|
1315, 1041, 1165, 269, 781, 209, 1073, 1069, 323, 685, 1197, 301, 813, 77, 589, 205, 717, 1225, 533, 149, 661, |
| 308 |
|
|
53, 565, 181, 693, 0, 0 |
| 309 |
|
|
}; |
| 310 |
|
|
|
| 311 |
|
|
static const uint16_t decoder_tree6[62] = { |
| 312 |
|
|
2, 1, 4, 6, 8, 10, 12, 14, 16, 3, 33, 5, 17, 9, 18, 20, 22, 24, 26, 28, 30, 32, 34, 7, 49, 13, 25, 36, 38, 11, |
| 313 |
|
|
21, 41, 35, 37, 19, 40, 42, 44, 46, 48, 50, 15, 52, 57, 29, 27, 23, 53, 54, 51, 39, 45, 43, 56, 58, 31, 55, 60, |
| 314 |
|
|
61, 47, 59, 63 |
| 315 |
|
|
}; |
| 316 |
|
|
|
| 317 |
|
|
static const uint16_t *const decoder_tables[7] = { |
| 318 |
|
|
decoder_tree0, |
| 319 |
|
|
decoder_tree1, |
| 320 |
|
|
decoder_tree2, |
| 321 |
|
|
decoder_tree3, |
| 322 |
|
|
decoder_tree4, |
| 323 |
|
|
decoder_tree5, |
| 324 |
|
|
decoder_tree6, |
| 325 |
|
|
}; |
| 326 |
|
|
|
| 327 |
|
|
static const int decoder_tables_elements[7] = { |
| 328 |
|
|
FF_ARRAY_ELEMS(decoder_tree0), |
| 329 |
|
|
FF_ARRAY_ELEMS(decoder_tree1), |
| 330 |
|
|
FF_ARRAY_ELEMS(decoder_tree2), |
| 331 |
|
|
FF_ARRAY_ELEMS(decoder_tree3), |
| 332 |
|
|
FF_ARRAY_ELEMS(decoder_tree4), |
| 333 |
|
|
FF_ARRAY_ELEMS(decoder_tree5), |
| 334 |
|
|
FF_ARRAY_ELEMS(decoder_tree6), |
| 335 |
|
|
}; |
| 336 |
|
|
|
| 337 |
|
|
static const float mlt_quant[7][14] = { |
| 338 |
|
|
{ 0.0f, 0.392f, 0.761f, 1.120f, 1.477f, 1.832f, 2.183f, 2.541f, 2.893f, 3.245f, 3.598f, 3.942f, 4.288f, 4.724f }, |
| 339 |
|
|
{ 0.0f, 0.544f, 1.060f, 1.563f, 2.068f, 2.571f, 3.072f, 3.562f, 4.070f, 4.620f, 0.0f, 0.0f, 0.0f, 0.0f }, |
| 340 |
|
|
{ 0.0f, 0.746f, 1.464f, 2.180f, 2.882f, 3.584f, 4.316f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f }, |
| 341 |
|
|
{ 0.0f, 1.006f, 2.000f, 2.993f, 3.985f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f }, |
| 342 |
|
|
{ 0.0f, 1.321f, 2.703f, 3.983f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f }, |
| 343 |
|
|
{ 0.0f, 1.657f, 3.491f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f }, |
| 344 |
|
|
{ 0.0f, 1.964f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f } |
| 345 |
|
|
}; |
| 346 |
|
|
|
| 347 |
|
|
static const float noise_category5[21] = { |
| 348 |
|
|
0.70711f, 0.6179f, 0.5005f, 0.3220f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, |
| 349 |
|
|
0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f, 0.17678f |
| 350 |
|
|
}; |
| 351 |
|
|
|
| 352 |
|
|
static const float noise_category6[21] = { |
| 353 |
|
|
0.70711f, 0.5686f, 0.3563f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, |
| 354 |
|
|
0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f, 0.25f |
| 355 |
|
|
}; |
| 356 |
|
|
|
| 357 |
|
|
#define FRAME_SIZE 320 |
| 358 |
|
|
#define REGION_SIZE 20 |
| 359 |
|
|
|
| 360 |
|
|
typedef struct SirenContext { |
| 361 |
|
|
GetBitContext gb; |
| 362 |
|
|
|
| 363 |
|
|
int microsoft; |
| 364 |
|
|
int rate_control_possibilities; |
| 365 |
|
|
int esf_adjustment; |
| 366 |
|
|
int number_of_regions; |
| 367 |
|
|
int scale_factor; |
| 368 |
|
|
int sample_rate_bits; |
| 369 |
|
|
int checksum_bits; |
| 370 |
|
|
|
| 371 |
|
|
unsigned dw1, dw2, dw3, dw4; |
| 372 |
|
|
|
| 373 |
|
|
int absolute_region_power_index[32]; |
| 374 |
|
|
float decoder_standard_deviation[32]; |
| 375 |
|
|
int power_categories[32]; |
| 376 |
|
|
int category_balance[32]; |
| 377 |
|
|
float standard_deviation[64]; |
| 378 |
|
|
float backup_frame[FRAME_SIZE]; |
| 379 |
|
|
|
| 380 |
|
|
AVFloatDSPContext *fdsp; |
| 381 |
|
|
av_tx_fn tx_fn; |
| 382 |
|
|
AVTXContext *tx_ctx; |
| 383 |
|
|
|
| 384 |
|
|
DECLARE_ALIGNED(32, float, imdct_buf)[4][FRAME_SIZE]; |
| 385 |
|
|
float *window; |
| 386 |
|
|
float *imdct_in; |
| 387 |
|
|
float *imdct_out; |
| 388 |
|
|
float *imdct_prev; |
| 389 |
|
|
} SirenContext; |
| 390 |
|
|
|
| 391 |
|
✗ |
static av_cold int siren_init(AVCodecContext *avctx) |
| 392 |
|
|
{ |
| 393 |
|
✗ |
const float scale = 1.0f / (22.f * 32768.f); |
| 394 |
|
✗ |
SirenContext *s = avctx->priv_data; |
| 395 |
|
|
int i; |
| 396 |
|
|
|
| 397 |
|
✗ |
s->imdct_in = s->imdct_buf[0]; |
| 398 |
|
✗ |
s->imdct_out = s->imdct_buf[1]; |
| 399 |
|
✗ |
s->imdct_prev = s->imdct_buf[2]; |
| 400 |
|
✗ |
s->window = s->imdct_buf[3]; |
| 401 |
|
|
|
| 402 |
|
✗ |
av_channel_layout_uninit(&avctx->ch_layout); |
| 403 |
|
✗ |
avctx->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO; |
| 404 |
|
✗ |
avctx->sample_fmt = AV_SAMPLE_FMT_FLT; |
| 405 |
|
|
|
| 406 |
|
✗ |
s->rate_control_possibilities = 16; |
| 407 |
|
✗ |
s->esf_adjustment = 7; |
| 408 |
|
✗ |
s->number_of_regions = 14; |
| 409 |
|
✗ |
s->scale_factor = 22; |
| 410 |
|
✗ |
s->dw1 = s->dw2 = s->dw3 = s->dw4 = 1; |
| 411 |
|
|
|
| 412 |
|
✗ |
for (i = 0; i < 64; i++) { |
| 413 |
|
✗ |
float region_power = powf(10, (i - 24) * 0.3010299957); |
| 414 |
|
|
|
| 415 |
|
✗ |
s->standard_deviation[i] = sqrtf(region_power); |
| 416 |
|
|
} |
| 417 |
|
|
|
| 418 |
|
✗ |
for (i = 0; i < FRAME_SIZE; i++) { |
| 419 |
|
✗ |
float angle = ((i + 0.5f) * M_PI_2) / 320.f; |
| 420 |
|
✗ |
s->window[i] = sinf(angle); |
| 421 |
|
|
} |
| 422 |
|
|
|
| 423 |
|
✗ |
s->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT); |
| 424 |
|
✗ |
if (!s->fdsp) |
| 425 |
|
✗ |
return AVERROR(ENOMEM); |
| 426 |
|
|
|
| 427 |
|
✗ |
s->microsoft = avctx->codec->id == AV_CODEC_ID_MSNSIREN; |
| 428 |
|
✗ |
if (s->microsoft) { |
| 429 |
|
✗ |
s->esf_adjustment = -2; |
| 430 |
|
✗ |
s->number_of_regions = 14; |
| 431 |
|
✗ |
s->scale_factor = 1; |
| 432 |
|
✗ |
s->sample_rate_bits = 2; |
| 433 |
|
✗ |
s->checksum_bits = 4; |
| 434 |
|
|
} |
| 435 |
|
|
|
| 436 |
|
✗ |
return av_tx_init(&s->tx_ctx, &s->tx_fn, AV_TX_FLOAT_MDCT, 1, FRAME_SIZE, &scale, 0); |
| 437 |
|
|
} |
| 438 |
|
|
|
| 439 |
|
✗ |
static int decode_envelope(SirenContext *s, GetBitContext *gb, |
| 440 |
|
|
int number_of_regions, float *decoder_standard_deviation, |
| 441 |
|
|
int *absolute_region_power_index, int esf_adjustment) |
| 442 |
|
|
{ |
| 443 |
|
✗ |
absolute_region_power_index[0] = (int)get_bits(gb, 5) - esf_adjustment; |
| 444 |
|
✗ |
absolute_region_power_index[0] = av_clip(absolute_region_power_index[0], -24, 39); |
| 445 |
|
✗ |
decoder_standard_deviation[0] = s->standard_deviation[absolute_region_power_index[0] + 24]; |
| 446 |
|
|
|
| 447 |
|
✗ |
for (int i = 1; i < number_of_regions; i++) { |
| 448 |
|
✗ |
int index = 0; |
| 449 |
|
|
|
| 450 |
|
|
do { |
| 451 |
|
✗ |
if (get_bits_left(gb) < 4 + number_of_regions - i + s->checksum_bits) |
| 452 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 453 |
|
✗ |
index = differential_decoder_tree[i - 1][index][get_bits1(gb)]; |
| 454 |
|
✗ |
} while (index > 0); |
| 455 |
|
|
|
| 456 |
|
✗ |
absolute_region_power_index[i] = av_clip(absolute_region_power_index[i - 1] - index - 12, -24, 39); |
| 457 |
|
✗ |
decoder_standard_deviation[i] = s->standard_deviation[absolute_region_power_index[i] + 24]; |
| 458 |
|
|
} |
| 459 |
|
|
|
| 460 |
|
✗ |
return get_bits_count(gb); |
| 461 |
|
|
} |
| 462 |
|
|
|
| 463 |
|
✗ |
static int categorize_regions(int number_of_regions, int number_of_available_bits, |
| 464 |
|
|
int *absolute_region_power_index, int *power_categories, |
| 465 |
|
|
int *category_balance) |
| 466 |
|
|
{ |
| 467 |
|
|
int region, delta, i, temp; |
| 468 |
|
|
int expected_number_of_code_bits; |
| 469 |
|
|
int min, max; |
| 470 |
|
✗ |
int offset, num_rate_control_possibilities = 16, |
| 471 |
|
✗ |
raw_value, raw_max_idx = 0, raw_min_idx = 0; |
| 472 |
|
|
int max_rate_categories[28]; |
| 473 |
|
|
int min_rate_categories[28]; |
| 474 |
|
|
int temp_category_balances[64]; |
| 475 |
|
✗ |
int *min_rate_ptr = NULL; |
| 476 |
|
✗ |
int *max_rate_ptr = NULL; |
| 477 |
|
|
|
| 478 |
|
✗ |
offset = -32; |
| 479 |
|
✗ |
for (delta = 32; number_of_regions > 0 && delta > 0; delta /= 2) { |
| 480 |
|
✗ |
expected_number_of_code_bits = 0; |
| 481 |
|
✗ |
for (region = 0; region < number_of_regions; region++) { |
| 482 |
|
✗ |
i = (delta + offset - |
| 483 |
|
✗ |
absolute_region_power_index[region]) >> 1; |
| 484 |
|
✗ |
i = av_clip_uintp2(i, 3); |
| 485 |
|
✗ |
power_categories[region] = i; |
| 486 |
|
✗ |
expected_number_of_code_bits += expected_bits_table[i]; |
| 487 |
|
|
|
| 488 |
|
|
} |
| 489 |
|
✗ |
if (expected_number_of_code_bits >= number_of_available_bits - 32) |
| 490 |
|
✗ |
offset += delta; |
| 491 |
|
|
} |
| 492 |
|
|
|
| 493 |
|
✗ |
expected_number_of_code_bits = 0; |
| 494 |
|
✗ |
for (region = 0; region < number_of_regions; region++) { |
| 495 |
|
✗ |
i = (offset - absolute_region_power_index[region]) >> 1; |
| 496 |
|
✗ |
i = av_clip_uintp2(i, 3); |
| 497 |
|
✗ |
max_rate_categories[region] = min_rate_categories[region] = |
| 498 |
|
✗ |
power_categories[region] = i; |
| 499 |
|
✗ |
expected_number_of_code_bits += expected_bits_table[i]; |
| 500 |
|
|
} |
| 501 |
|
|
|
| 502 |
|
✗ |
min = max = expected_number_of_code_bits; |
| 503 |
|
✗ |
min_rate_ptr = max_rate_ptr = |
| 504 |
|
✗ |
temp_category_balances + num_rate_control_possibilities; |
| 505 |
|
✗ |
for (i = 0; i < num_rate_control_possibilities - 1; i++) { |
| 506 |
|
✗ |
if (min + max > number_of_available_bits * 2) { |
| 507 |
|
✗ |
raw_value = -99; |
| 508 |
|
✗ |
for (region = number_of_regions - 1; region >= 0; region--) { |
| 509 |
|
✗ |
if (min_rate_categories[region] < 7) { |
| 510 |
|
✗ |
temp = |
| 511 |
|
✗ |
offset - absolute_region_power_index[region] - |
| 512 |
|
✗ |
2 * min_rate_categories[region]; |
| 513 |
|
✗ |
if (temp > raw_value) { |
| 514 |
|
✗ |
raw_value = temp; |
| 515 |
|
✗ |
raw_min_idx = region; |
| 516 |
|
|
} |
| 517 |
|
|
} |
| 518 |
|
|
} |
| 519 |
|
✗ |
if (raw_value == -99) |
| 520 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 521 |
|
✗ |
*min_rate_ptr++ = raw_min_idx; |
| 522 |
|
✗ |
min += |
| 523 |
|
✗ |
expected_bits_table[min_rate_categories[raw_min_idx] + 1] - |
| 524 |
|
✗ |
expected_bits_table[min_rate_categories[raw_min_idx]]; |
| 525 |
|
✗ |
min_rate_categories[raw_min_idx]++; |
| 526 |
|
|
} else { |
| 527 |
|
✗ |
raw_value = 99; |
| 528 |
|
✗ |
for (region = 0; region < number_of_regions; region++) { |
| 529 |
|
✗ |
if (max_rate_categories[region] > 0) { |
| 530 |
|
✗ |
temp = |
| 531 |
|
✗ |
offset - absolute_region_power_index[region] - |
| 532 |
|
✗ |
2 * max_rate_categories[region]; |
| 533 |
|
✗ |
if (temp < raw_value) { |
| 534 |
|
✗ |
raw_value = temp; |
| 535 |
|
✗ |
raw_max_idx = region; |
| 536 |
|
|
} |
| 537 |
|
|
} |
| 538 |
|
|
} |
| 539 |
|
✗ |
if (raw_value == 99) |
| 540 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 541 |
|
|
|
| 542 |
|
✗ |
*--max_rate_ptr = raw_max_idx; |
| 543 |
|
✗ |
max += expected_bits_table[max_rate_categories[raw_max_idx] - 1] - |
| 544 |
|
✗ |
expected_bits_table[max_rate_categories[raw_max_idx]]; |
| 545 |
|
✗ |
max_rate_categories[raw_max_idx]--; |
| 546 |
|
|
} |
| 547 |
|
|
} |
| 548 |
|
|
|
| 549 |
|
✗ |
for (region = 0; region < number_of_regions; region++) |
| 550 |
|
✗ |
power_categories[region] = max_rate_categories[region]; |
| 551 |
|
|
|
| 552 |
|
✗ |
for (i = 0; i < num_rate_control_possibilities - 1; i++) |
| 553 |
|
✗ |
category_balance[i] = *max_rate_ptr++; |
| 554 |
|
|
|
| 555 |
|
✗ |
return 0; |
| 556 |
|
|
} |
| 557 |
|
|
|
| 558 |
|
✗ |
static int get_dw(SirenContext *s) |
| 559 |
|
|
{ |
| 560 |
|
✗ |
int ret = s->dw1 + s->dw4; |
| 561 |
|
|
|
| 562 |
|
✗ |
if ((ret & 0x8000) != 0) |
| 563 |
|
✗ |
ret++; |
| 564 |
|
|
|
| 565 |
|
✗ |
s->dw1 = s->dw2; |
| 566 |
|
✗ |
s->dw2 = s->dw3; |
| 567 |
|
✗ |
s->dw3 = s->dw4; |
| 568 |
|
✗ |
s->dw4 = ret; |
| 569 |
|
|
|
| 570 |
|
✗ |
return ret; |
| 571 |
|
|
} |
| 572 |
|
|
|
| 573 |
|
✗ |
static int decode_vector(SirenContext *s, int number_of_regions, |
| 574 |
|
|
float *decoder_standard_deviation, |
| 575 |
|
|
int *power_categories, float *coefs, int scale_factor) |
| 576 |
|
|
{ |
| 577 |
|
✗ |
GetBitContext *gb = &s->gb; |
| 578 |
|
|
float *coefs_ptr; |
| 579 |
|
|
float decoded_value; |
| 580 |
|
|
float noise; |
| 581 |
|
|
const uint16_t *decoder_tree; |
| 582 |
|
|
int region; |
| 583 |
|
|
int category; |
| 584 |
|
|
int i, j; |
| 585 |
|
|
int index; |
| 586 |
|
✗ |
int error = 0; |
| 587 |
|
|
int dw1; |
| 588 |
|
|
int dw2; |
| 589 |
|
|
|
| 590 |
|
✗ |
for (region = 0; region < number_of_regions; region++) { |
| 591 |
|
✗ |
category = power_categories[region]; |
| 592 |
|
✗ |
coefs_ptr = coefs + (region * REGION_SIZE); |
| 593 |
|
|
|
| 594 |
|
✗ |
if (category >= 0 && category < 7) { |
| 595 |
|
✗ |
decoder_tree = decoder_tables[category]; |
| 596 |
|
|
|
| 597 |
|
✗ |
for (i = 0; i < number_of_vectors[category]; i++) { |
| 598 |
|
✗ |
index = 0; |
| 599 |
|
|
do { |
| 600 |
|
✗ |
if (get_bits_left(gb) - s->checksum_bits <= 0) { |
| 601 |
|
✗ |
error = 1; |
| 602 |
|
✗ |
break; |
| 603 |
|
|
} |
| 604 |
|
|
|
| 605 |
|
✗ |
if (index + show_bits1(gb) >= decoder_tables_elements[category]) { |
| 606 |
|
✗ |
error = 1; |
| 607 |
|
✗ |
break; |
| 608 |
|
|
} |
| 609 |
|
✗ |
index = decoder_tree[index + get_bits1(gb)]; |
| 610 |
|
✗ |
} while ((index & 1) == 0); |
| 611 |
|
|
|
| 612 |
|
✗ |
index >>= 1; |
| 613 |
|
|
|
| 614 |
|
✗ |
if (error == 0) { |
| 615 |
|
✗ |
for (j = 0; j < vector_dimension[category]; j++) { |
| 616 |
|
✗ |
decoded_value = mlt_quant[category][index & ((1 << index_table[category]) - 1)]; |
| 617 |
|
✗ |
index >>= index_table[category]; |
| 618 |
|
|
|
| 619 |
|
✗ |
if (decoded_value) { |
| 620 |
|
✗ |
if (get_bits_left(gb) - s->checksum_bits <= 0) { |
| 621 |
|
✗ |
error = 1; |
| 622 |
|
✗ |
break; |
| 623 |
|
|
} |
| 624 |
|
✗ |
if (!get_bits1(gb)) |
| 625 |
|
✗ |
decoded_value *= -decoder_standard_deviation[region]; |
| 626 |
|
|
else |
| 627 |
|
✗ |
decoded_value *= decoder_standard_deviation[region]; |
| 628 |
|
|
} |
| 629 |
|
|
|
| 630 |
|
✗ |
*coefs_ptr++ = decoded_value * scale_factor; |
| 631 |
|
|
} |
| 632 |
|
|
} else { |
| 633 |
|
✗ |
error = 1; |
| 634 |
|
✗ |
break; |
| 635 |
|
|
} |
| 636 |
|
|
} |
| 637 |
|
|
|
| 638 |
|
✗ |
if (error == 1) { |
| 639 |
|
✗ |
for (j = region + 1; j < number_of_regions; j++) |
| 640 |
|
✗ |
power_categories[j] = 7; |
| 641 |
|
✗ |
category = 7; |
| 642 |
|
|
} |
| 643 |
|
|
} |
| 644 |
|
|
|
| 645 |
|
✗ |
coefs_ptr = coefs + (region * REGION_SIZE); |
| 646 |
|
|
|
| 647 |
|
✗ |
if (category == 5 && s->microsoft) { |
| 648 |
|
✗ |
i = 0; |
| 649 |
|
✗ |
for (j = 0; j < REGION_SIZE; j++) { |
| 650 |
|
✗ |
if (*coefs_ptr != 0) { |
| 651 |
|
✗ |
i++; |
| 652 |
|
✗ |
if (fabs(*coefs_ptr) > 2.0 * decoder_standard_deviation[region]) { |
| 653 |
|
✗ |
i += 3; |
| 654 |
|
|
} |
| 655 |
|
|
} |
| 656 |
|
✗ |
coefs_ptr++; |
| 657 |
|
|
} |
| 658 |
|
✗ |
if (i >= FF_ARRAY_ELEMS(noise_category5)) { |
| 659 |
|
✗ |
error = 1; |
| 660 |
|
✗ |
break; |
| 661 |
|
|
} |
| 662 |
|
|
|
| 663 |
|
✗ |
noise = decoder_standard_deviation[region] * noise_category5[i]; |
| 664 |
|
|
} else |
| 665 |
|
✗ |
if (category == 5 || category == 6) { |
| 666 |
|
✗ |
i = 0; |
| 667 |
|
✗ |
for (j = 0; j < REGION_SIZE; j++) { |
| 668 |
|
✗ |
if (*coefs_ptr != 0) |
| 669 |
|
✗ |
i++; |
| 670 |
|
✗ |
coefs_ptr++; |
| 671 |
|
|
} |
| 672 |
|
|
|
| 673 |
|
✗ |
if (category == 5) { |
| 674 |
|
✗ |
noise = decoder_standard_deviation[region] * noise_category5[i]; |
| 675 |
|
|
} else |
| 676 |
|
✗ |
noise = decoder_standard_deviation[region] * noise_category6[i]; |
| 677 |
|
✗ |
} else if (category == 7) { |
| 678 |
|
✗ |
noise = decoder_standard_deviation[region] * 0.70711f; |
| 679 |
|
|
} else { |
| 680 |
|
✗ |
noise = 0; |
| 681 |
|
|
} |
| 682 |
|
|
|
| 683 |
|
✗ |
coefs_ptr = coefs + (region * REGION_SIZE); |
| 684 |
|
|
|
| 685 |
|
✗ |
if (category == 5 || category == 6 || category == 7) { |
| 686 |
|
✗ |
dw1 = get_dw(s); |
| 687 |
|
✗ |
dw2 = get_dw(s); |
| 688 |
|
|
|
| 689 |
|
✗ |
for (j = 0; j < 10; j++) { |
| 690 |
|
✗ |
if (category == 7 || *coefs_ptr == 0) |
| 691 |
|
✗ |
*coefs_ptr = dw1 & 1 ? noise : -noise; |
| 692 |
|
✗ |
coefs_ptr++; |
| 693 |
|
✗ |
dw1 >>= 1; |
| 694 |
|
|
|
| 695 |
|
✗ |
if (category == 7 || *coefs_ptr == 0) |
| 696 |
|
✗ |
*coefs_ptr = dw2 & 1 ? noise : -noise; |
| 697 |
|
✗ |
coefs_ptr++; |
| 698 |
|
✗ |
dw2 >>= 1; |
| 699 |
|
|
} |
| 700 |
|
|
} |
| 701 |
|
|
} |
| 702 |
|
|
|
| 703 |
|
✗ |
return error == 1 ? AVERROR_INVALIDDATA : (get_bits_left(gb) - s->checksum_bits); |
| 704 |
|
|
} |
| 705 |
|
|
|
| 706 |
|
✗ |
static int siren_decode(AVCodecContext *avctx, AVFrame *frame, |
| 707 |
|
|
int *got_frame, AVPacket *avpkt) |
| 708 |
|
|
{ |
| 709 |
|
✗ |
SirenContext *s = avctx->priv_data; |
| 710 |
|
✗ |
GetBitContext *gb = &s->gb; |
| 711 |
|
✗ |
int ret, number_of_valid_coefs = REGION_SIZE * s->number_of_regions; |
| 712 |
|
✗ |
int frame_error = 0, rate_control = 0; |
| 713 |
|
|
int bits_per_frame; |
| 714 |
|
|
|
| 715 |
|
✗ |
if (s->microsoft) { |
| 716 |
|
✗ |
bits_per_frame = avctx->sample_rate / 50; |
| 717 |
|
|
|
| 718 |
|
✗ |
if (avpkt->size < bits_per_frame / 8) |
| 719 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 720 |
|
|
|
| 721 |
|
✗ |
if ((ret = init_get_bits(gb, avpkt->data, bits_per_frame)) < 0) |
| 722 |
|
✗ |
return ret; |
| 723 |
|
|
} else |
| 724 |
|
✗ |
if ((ret = init_get_bits8(gb, avpkt->data, avpkt->size)) < 0) |
| 725 |
|
✗ |
return ret; |
| 726 |
|
|
|
| 727 |
|
✗ |
skip_bits(gb, s->sample_rate_bits); |
| 728 |
|
|
|
| 729 |
|
✗ |
ret = decode_envelope(s, gb, s->number_of_regions, |
| 730 |
|
✗ |
s->decoder_standard_deviation, |
| 731 |
|
✗ |
s->absolute_region_power_index, s->esf_adjustment); |
| 732 |
|
✗ |
if (ret < 0) |
| 733 |
|
✗ |
return ret; |
| 734 |
|
|
|
| 735 |
|
✗ |
rate_control = get_bits(gb, 4); |
| 736 |
|
|
|
| 737 |
|
✗ |
ret = categorize_regions(s->number_of_regions, get_bits_left(gb) - s->checksum_bits, |
| 738 |
|
✗ |
s->absolute_region_power_index, s->power_categories, |
| 739 |
|
✗ |
s->category_balance); |
| 740 |
|
✗ |
if (ret < 0) |
| 741 |
|
✗ |
return ret; |
| 742 |
|
|
|
| 743 |
|
✗ |
for (int i = 0; i < rate_control; i++) |
| 744 |
|
✗ |
s->power_categories[s->category_balance[i]]++; |
| 745 |
|
|
|
| 746 |
|
✗ |
ret = decode_vector(s, s->number_of_regions, |
| 747 |
|
✗ |
s->decoder_standard_deviation, s->power_categories, |
| 748 |
|
|
s->imdct_in, s->scale_factor); |
| 749 |
|
✗ |
if (ret < 0 && !s->microsoft) |
| 750 |
|
✗ |
return ret; |
| 751 |
|
|
|
| 752 |
|
✗ |
if (get_bits_left(gb) - s->checksum_bits > 0) { |
| 753 |
|
|
do { |
| 754 |
|
✗ |
frame_error |= !get_bits1(gb); |
| 755 |
|
✗ |
} while (get_bits_left(gb) - s->checksum_bits > 0); |
| 756 |
|
✗ |
} else if (get_bits_left(gb) - s->checksum_bits < 0 && |
| 757 |
|
✗ |
rate_control + 1 < s->rate_control_possibilities) { |
| 758 |
|
✗ |
frame_error = 1; |
| 759 |
|
|
} |
| 760 |
|
|
|
| 761 |
|
✗ |
for (int i = 0; i < s->number_of_regions; i++) { |
| 762 |
|
✗ |
if (s->absolute_region_power_index[i] > 33 || |
| 763 |
|
✗ |
s->absolute_region_power_index[i] < -31) |
| 764 |
|
✗ |
frame_error = 1; |
| 765 |
|
|
} |
| 766 |
|
|
|
| 767 |
|
✗ |
if ((avctx->err_recognition & AV_EF_CRCCHECK) && s->checksum_bits) { |
| 768 |
|
|
static const uint16_t ChecksumTable[4] = {0x7F80, 0x7878, 0x6666, 0x5555}; |
| 769 |
|
|
int wpf, checksum, sum, calculated_checksum, temp1; |
| 770 |
|
|
|
| 771 |
|
✗ |
checksum = get_bits(gb, s->checksum_bits); |
| 772 |
|
|
|
| 773 |
|
✗ |
wpf = bits_per_frame / 16; |
| 774 |
|
✗ |
sum = 0; |
| 775 |
|
✗ |
for (int i = 0; i < wpf - 1; i++) |
| 776 |
|
✗ |
sum ^= AV_RB16(avpkt->data + i * 2) << (i % 15); |
| 777 |
|
✗ |
sum ^= (AV_RB16(avpkt->data + (wpf - 1) * 2) & ~checksum) << ((wpf - 1) % 15); |
| 778 |
|
✗ |
sum = (sum >> 15) ^ (sum & 0x7FFF); |
| 779 |
|
|
|
| 780 |
|
✗ |
calculated_checksum = 0; |
| 781 |
|
✗ |
for (int i = 0; i < 4; i++) { |
| 782 |
|
✗ |
temp1 = ChecksumTable[i] & sum; |
| 783 |
|
|
|
| 784 |
|
✗ |
for (int j = 8; j > 0; j >>= 1) |
| 785 |
|
✗ |
temp1 ^= temp1 >> j; |
| 786 |
|
|
|
| 787 |
|
✗ |
calculated_checksum <<= 1; |
| 788 |
|
✗ |
calculated_checksum |= temp1 & 1; |
| 789 |
|
|
} |
| 790 |
|
|
|
| 791 |
|
✗ |
if (checksum != calculated_checksum) { |
| 792 |
|
✗ |
av_log(avctx, AV_LOG_WARNING, "Invalid checksum\n"); |
| 793 |
|
✗ |
if (avctx->err_recognition & AV_EF_EXPLODE) |
| 794 |
|
✗ |
return AVERROR_INVALIDDATA; |
| 795 |
|
✗ |
frame_error = 1; |
| 796 |
|
|
} |
| 797 |
|
|
} |
| 798 |
|
|
|
| 799 |
|
✗ |
if (frame_error) { |
| 800 |
|
✗ |
memcpy(s->imdct_in, s->backup_frame, number_of_valid_coefs * sizeof(float)); |
| 801 |
|
✗ |
memset(s->backup_frame, 0, number_of_valid_coefs * sizeof(float)); |
| 802 |
|
|
} else { |
| 803 |
|
✗ |
memcpy(s->backup_frame, s->imdct_in, number_of_valid_coefs * sizeof(float)); |
| 804 |
|
|
} |
| 805 |
|
|
|
| 806 |
|
✗ |
frame->nb_samples = FRAME_SIZE; |
| 807 |
|
✗ |
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) |
| 808 |
|
✗ |
return ret; |
| 809 |
|
|
|
| 810 |
|
✗ |
for (int i = 0; i < FRAME_SIZE; i += 2) |
| 811 |
|
✗ |
s->imdct_in[i] *= -1; |
| 812 |
|
|
|
| 813 |
|
✗ |
s->tx_fn(s->tx_ctx, s->imdct_out, s->imdct_in, sizeof(float)); |
| 814 |
|
✗ |
s->fdsp->vector_fmul_window((float *)frame->data[0], |
| 815 |
|
✗ |
s->imdct_prev + (FRAME_SIZE >> 1), |
| 816 |
|
✗ |
s->imdct_out, s->window, |
| 817 |
|
|
FRAME_SIZE >> 1); |
| 818 |
|
✗ |
FFSWAP(float *, s->imdct_out, s->imdct_prev); |
| 819 |
|
|
|
| 820 |
|
✗ |
*got_frame = 1; |
| 821 |
|
|
|
| 822 |
|
✗ |
return s->microsoft ? bits_per_frame / 8 : avpkt->size; |
| 823 |
|
|
} |
| 824 |
|
|
|
| 825 |
|
✗ |
static av_cold void siren_flush(AVCodecContext *avctx) |
| 826 |
|
|
{ |
| 827 |
|
✗ |
SirenContext *s = avctx->priv_data; |
| 828 |
|
|
|
| 829 |
|
✗ |
memset(s->backup_frame, 0, sizeof(s->backup_frame)); |
| 830 |
|
✗ |
memset(s->imdct_prev, 0, FRAME_SIZE * sizeof(*s->imdct_prev)); |
| 831 |
|
✗ |
memset(s->imdct_out, 0, FRAME_SIZE * sizeof(*s->imdct_out)); |
| 832 |
|
|
} |
| 833 |
|
|
|
| 834 |
|
✗ |
static av_cold int siren_close(AVCodecContext *avctx) |
| 835 |
|
|
{ |
| 836 |
|
✗ |
SirenContext *s = avctx->priv_data; |
| 837 |
|
|
|
| 838 |
|
✗ |
av_freep(&s->fdsp); |
| 839 |
|
✗ |
av_tx_uninit(&s->tx_ctx); |
| 840 |
|
|
|
| 841 |
|
✗ |
return 0; |
| 842 |
|
|
} |
| 843 |
|
|
|
| 844 |
|
|
const FFCodec ff_siren_decoder = { |
| 845 |
|
|
.p.name = "siren", |
| 846 |
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("Siren"), |
| 847 |
|
|
.priv_data_size = sizeof(SirenContext), |
| 848 |
|
|
.p.type = AVMEDIA_TYPE_AUDIO, |
| 849 |
|
|
.p.id = AV_CODEC_ID_SIREN, |
| 850 |
|
|
.init = siren_init, |
| 851 |
|
|
.close = siren_close, |
| 852 |
|
|
FF_CODEC_DECODE_CB(siren_decode), |
| 853 |
|
|
.flush = siren_flush, |
| 854 |
|
|
.p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | |
| 855 |
|
|
AV_CODEC_CAP_DR1, |
| 856 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | |
| 857 |
|
|
FF_CODEC_CAP_INIT_CLEANUP, |
| 858 |
|
|
}; |
| 859 |
|
|
|
| 860 |
|
|
const FFCodec ff_msnsiren_decoder = { |
| 861 |
|
|
.p.name = "msnsiren", |
| 862 |
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("MSN Siren"), |
| 863 |
|
|
.priv_data_size = sizeof(SirenContext), |
| 864 |
|
|
.p.type = AVMEDIA_TYPE_AUDIO, |
| 865 |
|
|
.p.id = AV_CODEC_ID_MSNSIREN, |
| 866 |
|
|
.init = siren_init, |
| 867 |
|
|
.close = siren_close, |
| 868 |
|
|
FF_CODEC_DECODE_CB(siren_decode), |
| 869 |
|
|
.flush = siren_flush, |
| 870 |
|
|
.p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | |
| 871 |
|
|
AV_CODEC_CAP_DR1, |
| 872 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | |
| 873 |
|
|
FF_CODEC_CAP_INIT_CLEANUP, |
| 874 |
|
|
}; |
| 875 |
|
|
|