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
175
176
177
178
179
180
181
182
183
184
185
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2004-2005 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "resource.h"
#include "codecs.h"
#include "common/stream.h"
namespace Kyra {
struct CPSResource {
uint32 size;
uint16 width;
};
static const CPSResource CPSResourceTable[] = {
{ 64000, 320 }, { 7740, 180 }, { 46080, 320 }, { 0, 0 }
};
static int16 getWidthFromCPSRes(uint32 size) {
int16 c = 0;
for (; CPSResourceTable[c].size; ++c) {
if (CPSResourceTable[c].size == size)
return CPSResourceTable[c].width;
}
return -1;
}
CPSImage::CPSImage(uint8* buffer, uint32 size) {
if (!buffer) {
error("resource created without data");
}
_ownPalette = 0;
Common::MemoryReadStream bufferstream(buffer, size);
// reads in the Header
_cpsHeader._filesize = bufferstream.readUint16LE() + 2;
_cpsHeader._format = bufferstream.readUint16LE();
_cpsHeader._imagesize = bufferstream.readUint16LE();
_cpsHeader._pal = bufferstream.readUint32LE();
// lets check a bit
if (_cpsHeader._pal == 0x3000000) {
// if this was a compressed palette you should have strange graphics
uint8* palbuffer = new uint8[768];
assert(palbuffer);
bufferstream.read(palbuffer, 768 * sizeof(uint8));
_ownPalette = new Palette(palbuffer, 768);
assert(palbuffer);
}
_image = new uint8[_cpsHeader._imagesize];
assert(_image);
uint8* imagebuffer = &buffer[bufferstream.pos()];
assert(imagebuffer);
if (_cpsHeader._format == 4) {
Compression::decode80(imagebuffer, _image);
} else if (_cpsHeader._format == 3) {
Compression::decode3(imagebuffer, _image, _cpsHeader._imagesize);
} else {
error("unknown CPS format %d", _cpsHeader._format);
}
int16 width = getWidthFromCPSRes(_cpsHeader._imagesize);
if (width == -1) {
warning("unknown CPS width(imagesize: %d)", _cpsHeader._imagesize);
delete [] buffer;
return;
}
_width = (uint16)width;
_height = _cpsHeader._imagesize / _width;
_transparency = -1;
delete [] buffer;
}
CPSImage::~CPSImage() {
delete [] _image;
delete _ownPalette;
}
void CPSImage::drawToPlane(uint8* plane, uint16 planepitch, uint16 planeheight, uint16 x, uint16 y) {
uint8* src = _image;
uint8* dst = &plane[y * planepitch + x];
uint32 copysize = planepitch - x;
if (copysize > _width)
copysize = _width;
if (_transparency == -1) {
// 'fast' blitting
for (uint16 y_ = 0; y_ < _height && y + y_ < planeheight; ++y_) {
memcpy(dst, src, copysize * sizeof(uint8));
dst += planepitch;
src += _width;
}
} else {
// oh no! we have transparency so we have a very slow copy :/
for (uint16 yadd = 0; yadd < _height; ++yadd) {
for (uint16 xadd = 0; xadd < copysize; ++xadd) {
if (*src == _transparency) {
++dst;
++src;
} else {
*dst++ = *src++;
}
}
src += _width - copysize;
dst += planepitch - copysize;
}
}
}
void CPSImage::drawToPlane(uint8* plane, uint16 planepitch, uint16 planeheight, uint16 x, uint16 y,
uint16 srcx, uint16 srcy, uint16 srcwidth, uint16 srcheight) {
uint8* src = &_image[srcy * _width + srcx];
uint8* dst = &plane[y * planepitch + x];
uint32 copysize = planepitch - x;
if (srcwidth > _width)
srcwidth = _width;
if (copysize > srcwidth)
copysize = srcwidth;
if (_transparency == -1) {
// 'fast' blitting
for (uint16 y_ = 0; y_ < srcheight && y + y_ < planeheight; ++y_) {
memcpy(dst, src, copysize * sizeof(uint8));
dst += planepitch;
src += _width;
}
} else {
// oh no! we have transparency so we have a very slow copy :/
for (uint16 yadd = 0; yadd < srcheight; ++yadd) {
for (uint16 xadd = 0; xadd < copysize; ++xadd) {
if (*src == _transparency) {
++dst;
++src;
} else {
*dst++ = *src++;
}
}
dst += planepitch - copysize;
src += _width - copysize;
}
}
}
} // end of namespace Kyra
|
