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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*************************************************************
Copyright (C) 1990, 1991, 1993 Andy C. Hung, all rights reserved.
PUBLIC DOMAIN LICENSE: Stanford University Portable Video Research
Group. If you use this software, you agree to the following: This
program package is purely experimental, and is licensed "as is".
Permission is granted to use, modify, and distribute this program
without charge for any purpose, provided this license/ disclaimer
notice appears in the copies. No warranty or maintenance is given,
either expressed or implied. In no event shall the author(s) be
liable to you or a third party for any special, incidental,
consequential, or other damages, arising out of the use or inability
to use the program for any purpose (or the loss of data), even if we
have been advised of such possibilities. Any public reference or
advertisement of this source code should refer to it as the Portable
Video Research Group (PVRG) code, and not by any author(s) (or
Stanford University) name.
*************************************************************/
/*
************************************************************
dct.h
This file contains the basic DCT matrix values for the reference DCT
transform. It doesn't matter if it is slow because it is rarely used.
A butterfly would be much faster.
************************************************************
*/
#ifndef DCT_DONE
#define DCT_DONE
#define DC_QUARTER 1.41421356237309504880
#define DC_THREE_EIGHTHS 0.76536686473017954348
#define DC_ONE_EIGHTH 1.84775906502257351226
/* Bitshifted Twelve */
#define IC_QUARTER 2896
#define IC_THREE_EIGHTHS 1567
#define IC_ONE_EIGHTH 3784
double DctMatrix[] = {
0.3535533905932737,
0.3535533905932737,
0.3535533905932737,
0.3535533905932737,
0.3535533905932737,
0.3535533905932737,
0.3535533905932737,
0.3535533905932737,
0.4903926402016152,
0.4157348061512727,
0.2777851165098011,
0.0975451610080642,
-0.0975451610080641,
-0.2777851165098010,
-0.4157348061512727,
-0.4903926402016152,
0.4619397662556434,
0.1913417161825449,
-0.1913417161825449,
-0.4619397662556434,
-0.4619397662556434,
-0.1913417161825452,
0.1913417161825450,
0.4619397662556432,
0.4157348061512727,
-0.0975451610080641,
-0.4903926402016152,
-0.2777851165098011,
0.2777851165098009,
0.4903926402016153,
0.0975451610080640,
-0.4157348061512721,
0.3535533905932738,
-0.3535533905932737,
-0.3535533905932738,
0.3535533905932737,
0.3535533905932738,
-0.3535533905932733,
-0.3535533905932736,
0.3535533905932733,
0.2777851165098011,
-0.4903926402016152,
0.0975451610080641,
0.4157348061512728,
-0.4157348061512726,
-0.0975451610080649,
0.4903926402016152,
-0.2777851165098008,
0.1913417161825449,
-0.4619397662556434,
0.4619397662556432,
-0.1913417161825449,
-0.1913417161825453,
0.4619397662556437,
-0.4619397662556435,
0.1913417161825431,
0.0975451610080642,
-0.2777851165098011,
0.4157348061512728,
-0.4903926402016153,
0.4903926402016152,
-0.4157348061512720,
0.2777851165098022,
-0.0975451610080625};
static double IDctMatrix[] = {
0.3535533905932737,
0.4903926402016152,
0.4619397662556434,
0.4157348061512727,
0.3535533905932738,
0.2777851165098011,
0.1913417161825449,
0.0975451610080642,
0.3535533905932737,
0.4157348061512727,
0.1913417161825449,
-0.0975451610080641,
-0.3535533905932737,
-0.4903926402016152,
-0.4619397662556434,
-0.2777851165098011,
0.3535533905932737,
0.2777851165098011,
-0.1913417161825449,
-0.4903926402016152,
-0.3535533905932738,
0.0975451610080641,
0.4619397662556432,
0.4157348061512728,
0.3535533905932737,
0.0975451610080642,
-0.4619397662556434,
-0.2777851165098011,
0.3535533905932737,
0.4157348061512728,
-0.1913417161825449,
-0.4903926402016153,
0.3535533905932737,
-0.0975451610080641,
-0.4619397662556434,
0.2777851165098009,
0.3535533905932738,
-0.4157348061512726,
-0.1913417161825453,
0.4903926402016152,
0.3535533905932737,
-0.2777851165098010,
-0.1913417161825452,
0.4903926402016153,
-0.3535533905932733,
-0.0975451610080649,
0.4619397662556437,
-0.4157348061512720,
0.3535533905932737,
-0.4157348061512727,
0.1913417161825450,
0.0975451610080640,
-0.3535533905932736,
0.4903926402016152,
-0.4619397662556435,
0.2777851165098022,
0.3535533905932737,
-0.4903926402016152,
0.4619397662556432,
-0.4157348061512721,
0.3535533905932733,
-0.2777851165098008,
0.1913417161825431,
-0.0975451610080625};
#endif
|
