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
|
/* 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.
*
* $URL$
* $Id$
*
*/
#include "lure/palette.h"
#include "common/util.h"
namespace Lure {
// Constructor
// Defaults the palette to a full 256 entry palette
Palette::Palette() {
_numEntries = GAME_COLOURS;
_palette = Memory::allocate(_numEntries * 4);
_palette->empty();
}
// Consructor
// Sets up a palette with the given number of entries and a copy of the passed data
Palette::Palette(uint8 numEntries1, const byte *data1, PaletteSource paletteSource) {
_numEntries = numEntries1;
_palette = Memory::allocate(_numEntries * 4);
if (data1) {
if (paletteSource == RGB64)
convertPalette(data1, _numEntries);
else
_palette->copyFrom(data1, 0, 0, _numEntries * 4);
} else {
// No data provided, set a null palette
_palette->empty();
}
}
// Constructor
// Makes a copy of a passed palette object
Palette::Palette(Palette &src) {
_numEntries = src.numEntries();
_palette = Memory::duplicate(src._palette);
}
// Constructor
// Loads a palette from a resource
Palette::Palette(uint16 resourceId) {
Disk &d = Disk::getReference();
MemoryBlock *srcData = d.getEntry(resourceId);
if (((srcData->size() % 3) != 0) || ((srcData->size() / 3) > GAME_COLOURS))
error("Specified resource %d is not a palette", resourceId);
_numEntries = srcData->size() / 3;
_palette = Memory::allocate(_numEntries * 4);
convertPalette(srcData->data(), _numEntries);
delete srcData;
}
void Palette::convertPalette(const byte *palette1, uint16 numEntries1) {
byte *pDest = _palette->data();
const byte *pSrc = palette1;
while (numEntries1-- > 0) {
*pDest++ = (pSrc[0] << 2) + (pSrc[0] >> 4);
*pDest++ = (pSrc[1] << 2) + (pSrc[1] >> 4);
*pDest++ = (pSrc[2] << 2) + (pSrc[2] >> 4);
*pDest++ = 0;
pSrc += 3;
}
}
void Palette::setEntry(uint8 index, uint32 value) {
if (index >= numEntries()) error("Invalid palette index: %d", index);
uint32 *entry = (uint32 *) (data() + index * 4);
*entry = value;
}
uint32 Palette::getEntry(uint8 index) {
if (index >= numEntries()) error("Invalid palette index: %d", index);
uint32 *entry = (uint32 *) (data() + index * 4);
return *entry;
}
void Palette::copyFrom(Palette *src) {
_palette->copyFrom(src->palette());
}
/*--------------------------------------------------------------------------*/
PaletteCollection::PaletteCollection(uint16 resourceId) {
Disk &d = Disk::getReference();
MemoryBlock *resource = d.getEntry(resourceId);
uint32 palSize;
uint8 *data = resource->data();
if (resource->size() % (SUB_PALETTE_SIZE * 3) != 0)
error("Resource #%d is not a valid palette set", resourceId);
palSize = SUB_PALETTE_SIZE * 3;
_numPalettes = resource->size() / palSize;
_palettes = (Palette **) Memory::alloc(_numPalettes * sizeof(Palette *));
for (uint8 paletteCtr = 0; paletteCtr < _numPalettes; ++paletteCtr, data += palSize)
_palettes[paletteCtr] = new Palette(SUB_PALETTE_SIZE, data, RGB64);
delete resource;
}
PaletteCollection::~PaletteCollection() {
for (int paletteCtr = 0; paletteCtr < _numPalettes; ++paletteCtr)
delete _palettes[paletteCtr];
free(_palettes);
}
Palette &PaletteCollection::getPalette(uint8 paletteNum) {
if (paletteNum >= _numPalettes)
error("Invalid palette index specified");
return *_palettes[paletteNum];
}
} // end of namespace Lure
|
