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70 lines
2.9 KiB
70 lines
2.9 KiB
/* |
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* MQ-coder encoder and decoder common functions |
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* Copyright (c) 2007 Kamil Nowosad |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* MQ-coder common (decoder/encoder) functions |
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* @file |
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* @author Kamil Nowosad |
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*/ |
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#include <string.h> |
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#include <stdint.h> |
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#include "mqc.h" |
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const uint16_t ff_mqc_qe[2 * 47] = { |
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0x5601, 0x5601, 0x3401, 0x3401, 0x1801, 0x1801, 0x0ac1, 0x0ac1, |
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0x0521, 0x0521, 0x0221, 0x0221, 0x5601, 0x5601, 0x5401, 0x5401, |
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0x4801, 0x4801, 0x3801, 0x3801, 0x3001, 0x3001, 0x2401, 0x2401, |
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0x1c01, 0x1c01, 0x1601, 0x1601, 0x5601, 0x5601, 0x5401, 0x5401, |
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0x5101, 0x5101, 0x4801, 0x4801, 0x3801, 0x3801, 0x3401, 0x3401, |
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0x3001, 0x3001, 0x2801, 0x2801, 0x2401, 0x2401, 0x2201, 0x2201, |
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0x1c01, 0x1c01, 0x1801, 0x1801, 0x1601, 0x1601, 0x1401, 0x1401, |
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0x1201, 0x1201, 0x1101, 0x1101, 0x0ac1, 0x0ac1, 0x09c1, 0x09c1, |
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0x08a1, 0x08a1, 0x0521, 0x0521, 0x0441, 0x0441, 0x02a1, 0x02a1, |
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0x0221, 0x0221, 0x0141, 0x0141, 0x0111, 0x0111, 0x0085, 0x0085, |
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0x0049, 0x0049, 0x0025, 0x0025, 0x0015, 0x0015, 0x0009, 0x0009, |
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0x0005, 0x0005, 0x0001, 0x0001, 0x5601, 0x5601 |
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}; |
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const uint8_t ff_mqc_nlps[2 * 47] = { |
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3, 2, 12, 13, 18, 19, 24, 25, 58, 59, 66, 67, 13, 12, 28, 29, |
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28, 29, 28, 29, 34, 35, 36, 37, 40, 41, 42, 43, 29, 28, 28, 29, |
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30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 38, 39, 40, 41, 42, 43, |
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44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, |
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60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, |
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76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 92, 93 |
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}; |
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const uint8_t ff_mqc_nmps[2 * 47] = { |
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2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 76, 77, 14, 15, 16, 17, |
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18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 58, 59, 30, 31, 32, 33, |
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34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, |
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50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, |
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66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, |
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82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 90, 91, 92, 93 |
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}; |
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void ff_mqc_init_contexts(MqcState *mqc) |
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{ |
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memset(mqc->cx_states, 0, sizeof(mqc->cx_states)); |
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mqc->cx_states[MQC_CX_UNI] = 2 * 46; |
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mqc->cx_states[MQC_CX_RL] = 2 * 3; |
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mqc->cx_states[0] = 2 * 4; |
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}
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