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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2001-2006 The ScummVM project
*
* This program 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 program 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 program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "graphics/scaler/intern.h"
#include "common/stdafx.h"
#include "CEScaler.h"
int redblueMasks[] = { 0x7C1F, 0xF81F };
int greenMasks[] = { 0x03E0, 0x07E0 };
static int maskUsed;
void initCEScaler(void) {
if (gBitFormat == 555)
maskUsed = 0;
else
maskUsed = 1;
}
static inline uint16 CEinterpolate16_4(uint16 p1, uint16 p2, uint16 p3, uint16 p4)
{
return ((((p1 & redblueMasks[maskUsed]) + (p2 & redblueMasks[maskUsed]) + (p3 & redblueMasks[maskUsed]) + (p4 & redblueMasks[maskUsed])) / 4) & redblueMasks[maskUsed]) |
((((p1 & greenMasks[maskUsed]) + (p2 & greenMasks[maskUsed]) + (p3 & greenMasks[maskUsed]) + (p4 & greenMasks[maskUsed])) / 4) & greenMasks[maskUsed]);
}
static inline uint16 CEinterpolate16_2(uint16 p1, int w1, uint16 p2, int w2) {
return ((((p1 & redblueMasks[maskUsed]) * w1 + (p2 & redblueMasks[maskUsed]) * w2) / (w1 + w2)) & redblueMasks[maskUsed]) |
((((p1 & greenMasks[maskUsed]) * w1 + (p2 & greenMasks[maskUsed]) * w2) / (w1 + w2)) & greenMasks[maskUsed]);
}
void PocketPCPortrait(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
uint8 *work;
int i;
while (height--) {
i = 0;
work = dstPtr;
for (int i=0; i<width; i+=4) {
// Work with 4 pixels
uint16 color1 = *(((const uint16 *)srcPtr) + i);
uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
uint16 color3 = *(((const uint16 *)srcPtr) + (i + 2));
uint16 color4 = *(((const uint16 *)srcPtr) + (i + 3));
*(((uint16 *)work) + 0) = CEinterpolate16_2(color1, 3, color2, 1);
*(((uint16 *)work) + 1) = CEinterpolate16_2(color2, 1, color3, 1);
*(((uint16 *)work) + 2) = CEinterpolate16_2(color3, 1, color4, 3);
work += 3 * sizeof(uint16);
}
srcPtr += srcPitch;
dstPtr += dstPitch;
}
}
void PocketPCHalf(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
uint8 *work;
int i;
uint16 srcPitch16 = (uint16)(srcPitch / sizeof(uint16));
while ((height-=2) >= 0) {
i = 0;
work = dstPtr;
for (int i=0; i<width; i+=2) {
// Another lame filter attempt :)
uint16 color1 = *(((const uint16 *)srcPtr) + i);
uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
uint16 color3 = *(((const uint16 *)srcPtr) + (i + srcPitch16));
uint16 color4 = *(((const uint16 *)srcPtr) + (i + srcPitch16 + 1));
*(((uint16 *)work) + 0) = CEinterpolate16_4(color1, color2, color3, color4);
work += sizeof(uint16);
}
srcPtr += 2 * srcPitch;
dstPtr += dstPitch;
}
}
void PocketPCHalfZoom(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
uint8 *work;
int i;
uint16 srcPitch16 = (uint16)(srcPitch / sizeof(uint16));
if (!height)
return;
while (height--) {
i = 0;
work = dstPtr;
for (int i=0; i<width; i+=2) {
uint16 color1 = *(((const uint16 *)srcPtr) + i);
uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
*(((uint16 *)work) + 0) = CEinterpolate16_2(color1, 1, color2, 1);
work += sizeof(uint16);
}
srcPtr += srcPitch;
dstPtr += dstPitch;
}
}
//#ifdef WIN32_PLATFORM_WFSP
void SmartphoneLandscape(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
uint8 *work;
int i;
int line = 0;
while (height--) {
i = 0;
work = dstPtr;
for (int i=0; i<width; i+=3) {
// Filter 2/3
uint16 color1 = *(((const uint16 *)srcPtr) + i);
uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
uint16 color3 = *(((const uint16 *)srcPtr) + (i + 2));
*(((uint16 *)work) + 0) = CEinterpolate16_2(color1, 3, color2, 1);
*(((uint16 *)work) + 1) = CEinterpolate16_2(color2, 1, color3, 1);
work += 2 * sizeof(uint16);
}
srcPtr += srcPitch;
dstPtr += dstPitch;
line++;
if (line == 7) {
line = 0;
srcPtr += srcPitch;
height--;
}
}
}
//#endif
|