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81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2004-2005 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "resource.h"
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#include "common/stream.h"
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#include "codecs.h"
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namespace Kyra {
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Palette::Palette(uint8* data, uint32 size) {
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if (!data) {
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error("resource created without data");
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}
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if (size != 768) {
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Common::MemoryReadStream datastream(data, size);
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datastream.readSint32LE();
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int imageSize = datastream.readSint16LE();
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if (imageSize != 768) {
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error("decompresed palette is not 768 byte long!");
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}
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// lets uncompress this palette :)
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_palette = new uint8[imageSize];
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assert(_palette);
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// made decompression
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if (Compression::decode80(data + 10, _palette) != 768) {
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error("decode80 decompressesize != 768 bytes");
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}
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delete [] data;
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data = _palette;
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}
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// hmm.. common/system.h Docu is wrong or SDL Backend has a bug :)
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// a palette should have this order:
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// R1-G1-B1-A1-R2-G2-B2-A2-...
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// so we need 4 bytes per color
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_palette = new uint8[256 * 4];
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uint8* currentpossrc = &data[0];
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uint8* currentposdst = &_palette[0];
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// creates the original pallette (only first 6 bits are used)
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for (uint32 i = 0; i < 256; i++) {
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currentposdst[0] = currentpossrc[0] << 2;
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currentposdst[1] = currentpossrc[1] << 2;
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currentposdst[2] = currentpossrc[2] << 2;
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currentpossrc += 3;
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currentposdst += 4;
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}
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delete [] data;
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}
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} // end of namespace Kyra
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