1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* Quant and Weight for DV codec
* Copyright (c) 2002 Fabrice Bellard
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Constants for DV codec.
*/
#ifndef AVCODEC_DVQUANT_H
#define AVCODEC_DVQUANT_H
#include <stdint.h>
/* unquant tables (not used directly) */
static const uint8_t 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 },
};
static const uint8_t dv_quant_offset[4] = { 6, 3, 0, 1 };
static const uint8_t dv_quant_areas[4] = { 6, 21, 43, 64 };
/* quantization quanta by QNO for DV100 */
static const uint8_t dv100_qstep[16] = {
1, /* QNO = 0 and 1 both have no quantization */
1,
2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52
};
/* DV25/50 DCT coefficient weights and inverse weights */
/* created by dvtables.py */
static const int dv_weight_bits = 18;
static const int dv_weight_88[64] = {
131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,
237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,
224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,
212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,
206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,
200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,
174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,
170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
};
static const int dv_weight_248[64] = {
131072, 242189, 257107, 237536, 229376, 200636, 242189, 223754,
224969, 196781, 262144, 242189, 229376, 200636, 257107, 237536,
211916, 185364, 235923, 217965, 229376, 211916, 206433, 180568,
242189, 223754, 224969, 196781, 211916, 185364, 235923, 217965,
200704, 175557, 222935, 205965, 200636, 185364, 195068, 170627,
229376, 211916, 206433, 180568, 200704, 175557, 222935, 205965,
175557, 153560, 188995, 174609, 165371, 144651, 200636, 185364,
195068, 170627, 175557, 153560, 188995, 174609, 165371, 144651,
};
static const int dv_iweight_bits = 14;
static const int 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,
};
static const int 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,
};
/**
* The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
*/
static const int 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,
};
static const int 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,
};
static const int 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,
};
static const int 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,
};
#endif /* AVCODEC_DVQUANT_H */
|
