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-rw-r--r--src/FbTk/ColorLUT.cc166
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1// ColorLUT.cc for Fluxbox Window Manager
2// Copyright (c) 2013 - Mathias Gumz <akira at fluxbox dot org>
3//
4// Permission is hereby granted, free of charge, to any person obtaining a
5// copy of this software and associated documentation files (the "Software"),
6// to deal in the Software without restriction, including without limitation
7// the rights to use, copy, modify, merge, publish, distribute, sublicense,
8// and/or sell copies of the Software, and to permit persons to whom the
9// Software is furnished to do so, subject to the following conditions:
10//
11// The above copyright notice and this permission notice shall be included in
12// all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20// DEALINGS IN THE SOFTWARE.
21
22
23#include "ColorLUT.hh"
24
25
26// created by:
27//
28// #include <unistd.h>
29// #include <stdlib.h>
30// int main(int argc, char **argv) {
31//
32// double s = 1.0;
33//
34// if (argc > 1) {
35// s = atof(argv[1]);
36// }
37//
38// size_t i; unsigned char c; double v;
39// for (i = 0; i < 256; ++i) {
40// c = 255;
41// v = s * i;
42// if (v < c)
43// c = (unsigned char)v;
44// write(1, &c, 1);
45// }
46//
47// return 0;
48// }
49//
50// and then piped to 'xxd -i'
51
52// ./a.out 1.5 | xxd -i -c 8 # value + (value >> 1))
53//
54
55namespace FbTk {
56
57const unsigned char ColorLUT::PRE_MULTIPLY_1_5[256] = {
58 0x00, 0x01, 0x03, 0x04, 0x06, 0x07, 0x09, 0x0a,
59 0x0c, 0x0d, 0x0f, 0x10, 0x12, 0x13, 0x15, 0x16,
60 0x18, 0x19, 0x1b, 0x1c, 0x1e, 0x1f, 0x21, 0x22,
61 0x24, 0x25, 0x27, 0x28, 0x2a, 0x2b, 0x2d, 0x2e,
62 0x30, 0x31, 0x33, 0x34, 0x36, 0x37, 0x39, 0x3a,
63 0x3c, 0x3d, 0x3f, 0x40, 0x42, 0x43, 0x45, 0x46,
64 0x48, 0x49, 0x4b, 0x4c, 0x4e, 0x4f, 0x51, 0x52,
65 0x54, 0x55, 0x57, 0x58, 0x5a, 0x5b, 0x5d, 0x5e,
66 0x60, 0x61, 0x63, 0x64, 0x66, 0x67, 0x69, 0x6a,
67 0x6c, 0x6d, 0x6f, 0x70, 0x72, 0x73, 0x75, 0x76,
68 0x78, 0x79, 0x7b, 0x7c, 0x7e, 0x7f, 0x81, 0x82,
69 0x84, 0x85, 0x87, 0x88, 0x8a, 0x8b, 0x8d, 0x8e,
70 0x90, 0x91, 0x93, 0x94, 0x96, 0x97, 0x99, 0x9a,
71 0x9c, 0x9d, 0x9f, 0xa0, 0xa2, 0xa3, 0xa5, 0xa6,
72 0xa8, 0xa9, 0xab, 0xac, 0xae, 0xaf, 0xb1, 0xb2,
73 0xb4, 0xb5, 0xb7, 0xb8, 0xba, 0xbb, 0xbd, 0xbe,
74 0xc0, 0xc1, 0xc3, 0xc4, 0xc6, 0xc7, 0xc9, 0xca,
75 0xcc, 0xcd, 0xcf, 0xd0, 0xd2, 0xd3, 0xd5, 0xd6,
76 0xd8, 0xd9, 0xdb, 0xdc, 0xde, 0xdf, 0xe1, 0xe2,
77 0xe4, 0xe5, 0xe7, 0xe8, 0xea, 0xeb, 0xed, 0xee,
78 0xf0, 0xf1, 0xf3, 0xf4, 0xf6, 0xf7, 0xf9, 0xfa,
79 0xfc, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
80 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
81 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
82 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
83 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
84 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
85 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
86 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
87 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
88 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
89 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
90};
91
92// ./a.out 1.125 | xxd -i -c 8 # value + (value >> 3)
93const unsigned char ColorLUT::PRE_MULTIPLY_1_125[256] = {
94 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
95 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
96 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
97 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22,
98 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
99 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34,
100 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d,
101 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,
102 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
103 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
104 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61,
105 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
106 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73,
107 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c,
108 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85,
109 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e,
110 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
111 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0,
112 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
113 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2,
114 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb,
115 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4,
116 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd,
117 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,
118 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
119 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8,
120 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1,
121 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
122 0xfc, 0xfd, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff,
123 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
124 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
125 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
126};
127
128
129// ./a.out 0.75 | xxd -i -c 8 # (value >> 1) + (value >> 2))
130const unsigned char ColorLUT::PRE_MULTIPLY_0_75[256] = {
131 0x00, 0x00, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05,
132 0x06, 0x06, 0x07, 0x08, 0x09, 0x09, 0x0a, 0x0b,
133 0x0c, 0x0c, 0x0d, 0x0e, 0x0f, 0x0f, 0x10, 0x11,
134 0x12, 0x12, 0x13, 0x14, 0x15, 0x15, 0x16, 0x17,
135 0x18, 0x18, 0x19, 0x1a, 0x1b, 0x1b, 0x1c, 0x1d,
136 0x1e, 0x1e, 0x1f, 0x20, 0x21, 0x21, 0x22, 0x23,
137 0x24, 0x24, 0x25, 0x26, 0x27, 0x27, 0x28, 0x29,
138 0x2a, 0x2a, 0x2b, 0x2c, 0x2d, 0x2d, 0x2e, 0x2f,
139 0x30, 0x30, 0x31, 0x32, 0x33, 0x33, 0x34, 0x35,
140 0x36, 0x36, 0x37, 0x38, 0x39, 0x39, 0x3a, 0x3b,
141 0x3c, 0x3c, 0x3d, 0x3e, 0x3f, 0x3f, 0x40, 0x41,
142 0x42, 0x42, 0x43, 0x44, 0x45, 0x45, 0x46, 0x47,
143 0x48, 0x48, 0x49, 0x4a, 0x4b, 0x4b, 0x4c, 0x4d,
144 0x4e, 0x4e, 0x4f, 0x50, 0x51, 0x51, 0x52, 0x53,
145 0x54, 0x54, 0x55, 0x56, 0x57, 0x57, 0x58, 0x59,
146 0x5a, 0x5a, 0x5b, 0x5c, 0x5d, 0x5d, 0x5e, 0x5f,
147 0x60, 0x60, 0x61, 0x62, 0x63, 0x63, 0x64, 0x65,
148 0x66, 0x66, 0x67, 0x68, 0x69, 0x69, 0x6a, 0x6b,
149 0x6c, 0x6c, 0x6d, 0x6e, 0x6f, 0x6f, 0x70, 0x71,
150 0x72, 0x72, 0x73, 0x74, 0x75, 0x75, 0x76, 0x77,
151 0x78, 0x78, 0x79, 0x7a, 0x7b, 0x7b, 0x7c, 0x7d,
152 0x7e, 0x7e, 0x7f, 0x80, 0x81, 0x81, 0x82, 0x83,
153 0x84, 0x84, 0x85, 0x86, 0x87, 0x87, 0x88, 0x89,
154 0x8a, 0x8a, 0x8b, 0x8c, 0x8d, 0x8d, 0x8e, 0x8f,
155 0x90, 0x90, 0x91, 0x92, 0x93, 0x93, 0x94, 0x95,
156 0x96, 0x96, 0x97, 0x98, 0x99, 0x99, 0x9a, 0x9b,
157 0x9c, 0x9c, 0x9d, 0x9e, 0x9f, 0x9f, 0xa0, 0xa1,
158 0xa2, 0xa2, 0xa3, 0xa4, 0xa5, 0xa5, 0xa6, 0xa7,
159 0xa8, 0xa8, 0xa9, 0xaa, 0xab, 0xab, 0xac, 0xad,
160 0xae, 0xae, 0xaf, 0xb0, 0xb1, 0xb1, 0xb2, 0xb3,
161 0xb4, 0xb4, 0xb5, 0xb6, 0xb7, 0xb7, 0xb8, 0xb9,
162 0xba, 0xba, 0xbb, 0xbc, 0xbd, 0xbd, 0xbe, 0xbf
163};
164
165}
166
generated by cgit v0.11.2 at 2024-06-02 02:50:29 (GMT)