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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "image/cel_3do.h"
#include "common/file.h"
#include "common/stream.h"
#include "common/substream.h"
#include "common/textconsole.h"
#include "graphics/pixelformat.h"
#include "graphics/surface.h"
#include "image/bmp.h"
namespace Image {
enum CCBFlags {
kCCBPacked = 1 << 9,
kCCBNoPre0 = 1 << 22
};
Cel3DODecoder::Cel3DODecoder() {
_surface = 0;
_palette = 0;
_paletteColorCount = 0;
}
Cel3DODecoder::~Cel3DODecoder() {
destroy();
}
void Cel3DODecoder::destroy() {
_surface = 0;
delete[] _palette;
_palette = 0;
_paletteColorCount = 0;
}
bool Cel3DODecoder::loadStream(Common::SeekableReadStream &stream) {
destroy();
// This is not a full implementaion of CEL support,
// just what is currently needed for following games:
// * Plumbers don't wear ties
// TODO: support paletted
if (stream.readUint32BE() != MKTAG('C', 'C', 'B', ' '))
return false;
if (stream.readUint32BE() != 0x50) // block size
return false;
if (stream.readUint32BE() != 0) // CCB version
return false;
uint32 flags = stream.readUint32BE();
stream.skip(0x30);
uint32 pre0 = stream.readUint32BE();
/* pre1 = */ stream.readUint32BE();
uint32 width = stream.readUint32BE();
uint32 height = stream.readUint32BE();
while (!stream.eos()) {
if (stream.readUint32BE() == MKTAG('P', 'D', 'A', 'T'))
break;
stream.skip(stream.readUint32BE() - 8);
}
if (stream.eos())
return false;
if (width == 0 || height == 0)
return false;
/* pdat_size = */ stream.readUint32BE();
Graphics::PixelFormat format(2, 5, 5, 5, 1, 10, 5, 0, 15);
Graphics::Surface *surface = new Graphics::Surface();
surface->create(width, height, format);
uint16 *dst = (uint16 *)surface->getBasePtr(0, 0);
if(!(flags & kCCBNoPre0)) {
pre0 = stream.readUint32BE();
if(!(flags & kCCBPacked)) {
/* pre1 = */ stream.readUint32BE();
}
}
// Only RGB555 is supported
if ((pre0 & 0x17) != 0x16) {
surface->free();
delete surface;
return false;
}
if(!(flags & kCCBPacked)) {
// RAW
// TODO: this can be optimized, especially on BE systems, but do we care?
for (uint xy = 0; xy < width * height; xy++)
*dst++ = stream.readUint16BE();
} else {
// RLE
for (uint y = 0; y < height; y++) {
int linecomprem = (stream.readUint16BE() + 2) * 4 - 2;
int linerem = width;
bool stopLine = false;
while (linerem > 0 && linecomprem > 0 && !stopLine) {
byte lead = stream.readByte();
linecomprem--;
switch (lead >> 6) {
case 0: // end of the line
stopLine = true;
break;
case 1: // copy
for (uint i = 0; i <= (lead & 0x3fu) && linerem > 0 && linecomprem > 0;
i++, linerem--, linecomprem -= 2)
*dst++ = stream.readUint16BE();
break;
case 2: // black
for (uint i = 0; i <= (lead & 0x3fu) && linerem > 0; i++, linerem--)
*dst++ = 0;
break;
case 3: { // RLE multiply
uint16 rleval = stream.readUint16BE();
linecomprem -= 2;
for (uint i = 0; i <= (lead & 0x3fu) && linerem > 0; i++, linerem--)
*dst++ = rleval;
break;
}
}
}
if (linecomprem > 0)
stream.skip(linecomprem);
if (linerem > 0) {
memset(dst, 0, 2 * linerem);
dst += linerem;
}
}
}
_surface = surface;
return true;
}
} // End of namespace Image
|
