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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Constants for DV codec |
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| 3 | * Copyright (c) 2002 Fabrice Bellard |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * @file |
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| 24 | * Constants for DV codec. |
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| 25 | */ |
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| 26 | |||
| 27 | #include "avcodec.h" |
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| 28 | #include "dvdata.h" |
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| 29 | |||
| 30 | /* unquant tables (not used directly) */ |
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| 31 | const uint8_t ff_dv_quant_shifts[22][4] = { |
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| 32 | { 3,3,4,4 }, |
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| 33 | { 3,3,4,4 }, |
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| 34 | { 2,3,3,4 }, |
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| 35 | { 2,3,3,4 }, |
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| 36 | { 2,2,3,3 }, |
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| 37 | { 2,2,3,3 }, |
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| 38 | { 1,2,2,3 }, |
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| 39 | { 1,2,2,3 }, |
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| 40 | { 1,1,2,2 }, |
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| 41 | { 1,1,2,2 }, |
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| 42 | { 0,1,1,2 }, |
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| 43 | { 0,1,1,2 }, |
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| 44 | { 0,0,1,1 }, |
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| 45 | { 0,0,1,1 }, |
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| 46 | { 0,0,0,1 }, |
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| 47 | { 0,0,0,0 }, |
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| 48 | { 0,0,0,0 }, |
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| 49 | { 0,0,0,0 }, |
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| 50 | { 0,0,0,0 }, |
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| 51 | { 0,0,0,0 }, |
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| 52 | { 0,0,0,0 }, |
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| 53 | { 0,0,0,0 }, |
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| 54 | }; |
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| 55 | |||
| 56 | const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 }; |
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| 57 | |||
| 58 | const int ff_dv_iweight_88[64] = { |
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| 59 | 32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079, |
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| 60 | 18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284, |
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| 61 | 19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262, |
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| 62 | 20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815, |
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| 63 | 20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400, |
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| 64 | 21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764, |
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| 65 | 24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191, |
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| 66 | 25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536, |
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| 67 | }; |
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| 68 | const int ff_dv_iweight_248[64] = { |
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| 69 | 32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196, |
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| 70 | 19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079, |
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| 71 | 20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764, |
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| 72 | 17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692, |
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| 73 | 21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191, |
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| 74 | 18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867, |
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| 75 | 24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173, |
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| 76 | 22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642, |
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| 77 | }; |
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| 78 | |||
| 79 | /** |
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| 80 | * The "inverse" DV100 weights are actually just the spec weights (zig-zagged). |
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| 81 | */ |
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| 82 | const int ff_dv_iweight_1080_y[64] = { |
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| 83 | 128, 16, 16, 17, 17, 17, 18, 18, |
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| 84 | 18, 18, 18, 18, 19, 18, 18, 19, |
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| 85 | 19, 19, 19, 19, 19, 42, 38, 40, |
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| 86 | 40, 40, 38, 42, 44, 43, 41, 41, |
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| 87 | 41, 41, 43, 44, 45, 45, 42, 42, |
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| 88 | 42, 45, 45, 48, 46, 43, 43, 46, |
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| 89 | 48, 49, 48, 44, 48, 49, 101, 98, |
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| 90 | 98, 101, 104, 109, 104, 116, 116, 123, |
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| 91 | }; |
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| 92 | const int ff_dv_iweight_1080_c[64] = { |
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| 93 | 128, 16, 16, 17, 17, 17, 25, 25, |
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| 94 | 25, 25, 26, 25, 26, 25, 26, 26, |
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| 95 | 26, 27, 27, 26, 26, 42, 38, 40, |
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| 96 | 40, 40, 38, 42, 44, 43, 41, 41, |
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| 97 | 41, 41, 43, 44, 91, 91, 84, 84, |
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| 98 | 84, 91, 91, 96, 93, 86, 86, 93, |
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| 99 | 96, 197, 191, 177, 191, 197, 203, 197, |
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| 100 | 197, 203, 209, 219, 209, 232, 232, 246, |
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| 101 | }; |
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| 102 | const int ff_dv_iweight_720_y[64] = { |
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| 103 | 128, 16, 16, 17, 17, 17, 18, 18, |
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| 104 | 18, 18, 18, 18, 19, 18, 18, 19, |
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| 105 | 19, 19, 19, 19, 19, 42, 38, 40, |
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| 106 | 40, 40, 38, 42, 44, 43, 41, 41, |
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| 107 | 41, 41, 43, 44, 68, 68, 63, 63, |
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| 108 | 63, 68, 68, 96, 92, 86, 86, 92, |
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| 109 | 96, 98, 96, 88, 96, 98, 202, 196, |
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| 110 | 196, 202, 208, 218, 208, 232, 232, 246, |
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| 111 | }; |
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| 112 | const int ff_dv_iweight_720_c[64] = { |
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| 113 | 128, 24, 24, 26, 26, 26, 36, 36, |
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| 114 | 36, 36, 36, 36, 38, 36, 36, 38, |
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| 115 | 38, 38, 38, 38, 38, 84, 76, 80, |
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| 116 | 80, 80, 76, 84, 88, 86, 82, 82, |
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| 117 | 82, 82, 86, 88, 182, 182, 168, 168, |
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| 118 | 168, 182, 182, 192, 186, 192, 172, 186, |
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| 119 | 192, 394, 382, 354, 382, 394, 406, 394, |
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| 120 | 394, 406, 418, 438, 418, 464, 464, 492, |
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| 121 | }; |
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| 122 |