0,0 → 1,122 |
/* |
* Constants for DV codec |
* Copyright (c) 2002 Fabrice Bellard |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
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/** |
* @file |
* Constants for DV codec. |
*/ |
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#include "avcodec.h" |
#include "dvdata.h" |
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/* unquant tables (not used directly) */ |
const uint8_t ff_dv_quant_shifts[22][4] = { |
{ 3,3,4,4 }, |
{ 3,3,4,4 }, |
{ 2,3,3,4 }, |
{ 2,3,3,4 }, |
{ 2,2,3,3 }, |
{ 2,2,3,3 }, |
{ 1,2,2,3 }, |
{ 1,2,2,3 }, |
{ 1,1,2,2 }, |
{ 1,1,2,2 }, |
{ 0,1,1,2 }, |
{ 0,1,1,2 }, |
{ 0,0,1,1 }, |
{ 0,0,1,1 }, |
{ 0,0,0,1 }, |
{ 0,0,0,0 }, |
{ 0,0,0,0 }, |
{ 0,0,0,0 }, |
{ 0,0,0,0 }, |
{ 0,0,0,0 }, |
{ 0,0,0,0 }, |
{ 0,0,0,0 }, |
}; |
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const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 }; |
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const int ff_dv_iweight_88[64] = { |
32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079, |
18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284, |
19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262, |
20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815, |
20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400, |
21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764, |
24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191, |
25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536, |
}; |
const int ff_dv_iweight_248[64] = { |
32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196, |
19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079, |
20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764, |
17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692, |
21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191, |
18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867, |
24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173, |
22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642, |
}; |
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/** |
* The "inverse" DV100 weights are actually just the spec weights (zig-zagged). |
*/ |
const int ff_dv_iweight_1080_y[64] = { |
128, 16, 16, 17, 17, 17, 18, 18, |
18, 18, 18, 18, 19, 18, 18, 19, |
19, 19, 19, 19, 19, 42, 38, 40, |
40, 40, 38, 42, 44, 43, 41, 41, |
41, 41, 43, 44, 45, 45, 42, 42, |
42, 45, 45, 48, 46, 43, 43, 46, |
48, 49, 48, 44, 48, 49, 101, 98, |
98, 101, 104, 109, 104, 116, 116, 123, |
}; |
const int ff_dv_iweight_1080_c[64] = { |
128, 16, 16, 17, 17, 17, 25, 25, |
25, 25, 26, 25, 26, 25, 26, 26, |
26, 27, 27, 26, 26, 42, 38, 40, |
40, 40, 38, 42, 44, 43, 41, 41, |
41, 41, 43, 44, 91, 91, 84, 84, |
84, 91, 91, 96, 93, 86, 86, 93, |
96, 197, 191, 177, 191, 197, 203, 197, |
197, 203, 209, 219, 209, 232, 232, 246, |
}; |
const int ff_dv_iweight_720_y[64] = { |
128, 16, 16, 17, 17, 17, 18, 18, |
18, 18, 18, 18, 19, 18, 18, 19, |
19, 19, 19, 19, 19, 42, 38, 40, |
40, 40, 38, 42, 44, 43, 41, 41, |
41, 41, 43, 44, 68, 68, 63, 63, |
63, 68, 68, 96, 92, 86, 86, 92, |
96, 98, 96, 88, 96, 98, 202, 196, |
196, 202, 208, 218, 208, 232, 232, 246, |
}; |
const int ff_dv_iweight_720_c[64] = { |
128, 24, 24, 26, 26, 26, 36, 36, |
36, 36, 36, 36, 38, 36, 36, 38, |
38, 38, 38, 38, 38, 84, 76, 80, |
80, 80, 76, 84, 88, 86, 82, 82, |
82, 82, 86, 88, 182, 182, 168, 168, |
168, 182, 182, 192, 186, 192, 172, 186, |
192, 394, 382, 354, 382, 394, 406, 394, |
394, 406, 418, 438, 418, 464, 464, 492, |
}; |
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