mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-18 23:57:32 +00:00
146 lines
4.1 KiB
C++
146 lines
4.1 KiB
C++
/* 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
|