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
|
/*
24 bit
*/
/*
* OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>.
* Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge.
* All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
static void
rfbInitOneRGBTable24 (CARD8 *table, int inMax, int outMax, int outShift,int swap);
static void
rfbInitColourMapSingleTable24(char **table, rfbPixelFormat *in,
rfbPixelFormat *out,rfbColourMap* colourMap)
{
CARD32 i, r, g, b, outValue;
CARD8 *t;
CARD8 c;
int nEntries = 1 << in->bitsPerPixel;
int shift = colourMap->is16?16:8;
if (*table) free(*table);
*table = (char *)malloc(nEntries * 3 + 1);
t = (CARD8 *)*table;
for (i = 0; i < nEntries; i++) {
r = g = b = 0;
if(i < colourMap->count) {
if(colourMap->is16) {
r = colourMap->data.shorts[3*i+0];
g = colourMap->data.shorts[3*i+1];
b = colourMap->data.shorts[3*i+2];
} else {
r = colourMap->data.bytes[3*i+0];
g = colourMap->data.bytes[3*i+1];
b = colourMap->data.bytes[3*i+2];
}
}
outValue = ((((r * (1 + out->redMax)) >> shift) << out->redShift) |
(((g * (1 + out->greenMax)) >> shift) << out->greenShift) |
(((b * (1 + out->blueMax)) >> shift) << out->blueShift));
*(CARD32*)&t[3*i] = outValue;
if(!rfbEndianTest)
memmove(t+3*i,t+3*i+1,3);
if (out->bigEndian != in->bigEndian) {
c = t[3*i]; t[3*i] = t[3*i+2]; t[3*i+2] = c;
}
}
}
/*
* rfbInitTrueColourSingleTable sets up a single lookup table for truecolour
* translation.
*/
static void
rfbInitTrueColourSingleTable24 (char **table, rfbPixelFormat *in,
rfbPixelFormat *out)
{
int i,outValue;
int inRed, inGreen, inBlue, outRed, outGreen, outBlue;
CARD8 *t;
CARD8 c;
int nEntries = 1 << in->bitsPerPixel;
if (*table) free(*table);
*table = (char *)malloc(nEntries * 3 + 1);
t = (CARD8 *)*table;
for (i = 0; i < nEntries; i++) {
inRed = (i >> in->redShift) & in->redMax;
inGreen = (i >> in->greenShift) & in->greenMax;
inBlue = (i >> in->blueShift) & in->blueMax;
outRed = (inRed * out->redMax + in->redMax / 2) / in->redMax;
outGreen = (inGreen * out->greenMax + in->greenMax / 2) / in->greenMax;
outBlue = (inBlue * out->blueMax + in->blueMax / 2) / in->blueMax;
outValue = ((outRed << out->redShift) |
(outGreen << out->greenShift) |
(outBlue << out->blueShift));
*(CARD32*)&t[3*i] = outValue;
if(!rfbEndianTest)
memmove(t+3*i,t+3*i+1,3);
if (out->bigEndian != in->bigEndian) {
c = t[3*i]; t[3*i] = t[3*i+2]; t[3*i+2] = c;
}
}
}
/*
* rfbInitTrueColourRGBTables sets up three separate lookup tables for the
* red, green and blue values.
*/
static void
rfbInitTrueColourRGBTables24 (char **table, rfbPixelFormat *in,
rfbPixelFormat *out)
{
CARD8 *redTable;
CARD8 *greenTable;
CARD8 *blueTable;
if (*table) free(*table);
*table = (char *)malloc((in->redMax + in->greenMax + in->blueMax + 3)
* 3 + 1);
redTable = (CARD8 *)*table;
greenTable = redTable + 3*(in->redMax + 1);
blueTable = greenTable + 3*(in->greenMax + 1);
rfbInitOneRGBTable24 (redTable, in->redMax, out->redMax,
out->redShift, (out->bigEndian != in->bigEndian));
rfbInitOneRGBTable24 (greenTable, in->greenMax, out->greenMax,
out->greenShift, (out->bigEndian != in->bigEndian));
rfbInitOneRGBTable24 (blueTable, in->blueMax, out->blueMax,
out->blueShift, (out->bigEndian != in->bigEndian));
}
static void
rfbInitOneRGBTable24 (CARD8 *table, int inMax, int outMax, int outShift,
int swap)
{
int i;
int nEntries = inMax + 1;
CARD32 outValue;
CARD8 c;
for (i = 0; i < nEntries; i++) {
outValue = ((i * outMax + inMax / 2) / inMax) << outShift;
*(CARD32 *)&table[3*i] = outValue;
if(!rfbEndianTest)
memmove(table+3*i,table+3*i+1,3);
if (swap) {
c = table[3*i]; table[3*i] = table[3*i+2];
table[3*i+2] = c;
}
}
}
|
