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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004-2005 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "common/stdafx.h"
#include "kyra/resource.h"
#include "common/stream.h"
#include "kyra/codecs.h"
namespace Kyra {
Palette::Palette(uint8* data, uint32 size) {
if (!data) {
error("resource created without data");
}
if (size != 768) {
Common::MemoryReadStream datastream(data, size);
datastream.readSint32LE();
int imageSize = datastream.readSint16LE();
if (imageSize != 768) {
error("decompresed palette is not 768 byte long!");
}
// lets uncompress this palette :)
_palette = new uint8[imageSize];
assert(_palette);
// made decompression
if (Compression::decode80(data + 10, _palette) != 768) {
error("decode80 decompressesize != 768 bytes");
}
delete [] data;
data = _palette;
}
// hmm.. common/system.h Docu is wrong or SDL Backend has a bug :)
// a palette should have this order:
// R1-G1-B1-A1-R2-G2-B2-A2-...
// so we need 4 bytes per color
_palette = new uint8[256 * 4];
uint8* currentpossrc = &data[0];
uint8* currentposdst = &_palette[0];
// creates the original pallette (only first 6 bits are used)
for (uint32 i = 0; i < 256; i++) {
currentposdst[0] = currentpossrc[0] << 2;
currentposdst[1] = currentpossrc[1] << 2;
currentposdst[2] = currentpossrc[2] << 2;
currentpossrc += 3;
currentposdst += 4;
}
delete [] data;
}
} // end of namespace Kyra
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