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
|
/* 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 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.
*
*/
#include "bladerunner/image.h"
#include "bladerunner/bladerunner.h"
#include "bladerunner/decompress_lcw.h"
#include "common/rect.h"
namespace BladeRunner {
Image::Image(BladeRunnerEngine *vm) {
_vm = vm;
}
Image::~Image() {
_surface.free();
}
bool Image::open(const Common::String &name) {
Common::SeekableReadStream *stream = _vm->getResourceStream(name);
if (!stream) {
warning("Image::open failed to open '%s'\n", name.c_str());
return false;
}
char tag[4] = { 0 };
stream->read(tag, 3);
uint32 width = stream->readUint32LE();
uint32 height = stream->readUint32LE();
// Enforce a reasonable limit
assert(width < 8000 && height < 8000);
uint32 bufSize = stream->size();
uint8 *buf = new uint8[bufSize];
stream->read(buf, bufSize);
uint32 dataSize = 2 * width * height;
void *data = malloc(dataSize);
assert(data);
if (strcmp(tag, "LZO") == 0) {
warning("LZO image decompression is not implemented");
} else if (strcmp(tag, "LCW") == 0) {
decompress_lcw(buf, bufSize, (uint8 *)data, dataSize);
#ifdef SCUMM_BIG_ENDIAN
// As the compression is working with 8-bit data, on big-endian architectures we have to switch order of bytes in uncompressed data
uint8 *rawData = (uint8 *)data;
for (size_t i = 0; i < dataSize - 1; i += 2) {
SWAP(rawData[i], rawData[i + 1]);
}
#endif
}
_surface.init(width, height, 2*width, data, gameDataPixelFormat());
_surface.convertToInPlace(screenPixelFormat());
delete[] buf;
delete stream;
return true;
}
void Image::copyToSurface(Graphics::Surface *dst) const {
dst->copyRectToSurface(_surface, 0, 0, Common::Rect(_surface.w, _surface.h));
}
} // End of namespace BladeRunner
|
