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
|
/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef MOHAWK_BITMAP_H
#define MOHAWK_BITMAP_H
#include "mohawk/graphics.h"
#include "common/scummsys.h"
#include "common/stream.h"
#include "graphics/surface.h"
namespace Mohawk {
class ImageData;
enum BitmapFormat {
kBitsPerPixel1 = 0x0000,
kBitsPerPixel4 = 0x0001,
kBitsPerPixel8 = 0x0002,
kBitsPerPixel16 = 0x0003,
kBitsPerPixel24 = 0x0004,
kBitsPerPixelMask = 0x0007,
kBitmapHasCLUT = 0x0008,
kDrawMASK = 0x00f0,
kDrawRaw = 0x0000,
kDrawRLE8 = 0x0010,
kDrawMSRLE8 = 0x0020,
kDrawRLE = 0x0030,
kPackMASK = 0x0f00,
kPackNone = 0x0000,
kPackLZ = 0x0100,
kPackLZ1 = 0x0200,
kPackRiven = 0x0400,
kPackXDec = 0x0f00,
kFlagMASK = 0xf000,
kFlag16_80X86 = 0x1000, // 16 bit pixel data has been converted to 80X86 format
kFlag24_MAC = 0x1000 // 24 bit pixel data has been converted to MAC 32 bit format
};
struct BitmapHeader {
uint16 width;
uint16 height;
int16 bytesPerRow;
uint16 format;
struct ColorTable {
uint16 tableSize;
byte rgbBits;
byte colorCount;
byte* palette; // In 8bpp only
} colorTable;
};
class MohawkBitmap {
public:
MohawkBitmap();
virtual ~MohawkBitmap();
virtual ImageData *decodeImage(Common::SeekableReadStream *stream);
// Unpack Functions
void unpackRaw();
void unpackLZ();
void unpackLZ1();
void unpackRiven();
// Draw Functions
void drawRaw();
void drawRLE8();
void drawRLE();
protected:
BitmapHeader _header;
byte getBitsPerPixel();
// The actual LZ decoder
static Common::SeekableReadStream *decompressLZ(Common::SeekableReadStream *stream, uint32 uncompressedSize);
private:
Common::SeekableReadStream *_data;
Graphics::Surface *_surface;
const char *getPackName();
void unpackImage();
const char *getDrawName();
void drawImage();
// Riven Decoding
void handleRivenSubcommandStream(byte count, byte *&dst);
};
// Myst uses a different image format than that of other Mohawk games.
// It essentially uses a Windows bitmap with the LZ encoding from the
// Mohawk Bitmap format.
class MystBitmap : public MohawkBitmap {
public:
MystBitmap() : MohawkBitmap() {}
~MystBitmap() {}
ImageData *decodeImage(Common::SeekableReadStream *stream);
private:
struct BitmapHeader {
uint16 type;
uint32 size;
uint16 res1;
uint16 res2;
uint32 imageOffset;
} _header;
struct InfoHeader {
uint32 size;
uint32 width;
uint32 height;
uint16 planes;
uint16 bitsPerPixel;
uint32 compression;
uint32 imageSize;
uint32 pixelsPerMeterX;
uint32 pixelsPerMeterY;
uint32 colorsUsed;
uint32 colorsImportant;
} _info;
};
class OldMohawkBitmap : public MohawkBitmap {
public:
OldMohawkBitmap() : MohawkBitmap() {}
~OldMohawkBitmap() {}
ImageData *decodeImage(Common::SeekableReadStream *stream);
};
} // End of namespace Mohawk
#endif
|
