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/* 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.
 *
 */

#include "common/stream.h"

#include "graphics/surface.h"

#include "prince/mhwanh.h"

namespace Prince {

MhwanhDecoder::MhwanhDecoder() : _surface(0), _palette(0), _paletteColorCount(0)
{
}

MhwanhDecoder::~MhwanhDecoder()
{
    destroy();
}

void MhwanhDecoder::destroy()
{
    if (_surface)
    {
        _surface->free();
        _surface = 0;
    }

    delete [] _palette; _palette = 0;
    _paletteColorCount = 0;
}

bool MhwanhDecoder::loadStream(Common::SeekableReadStream &stream)
{
    _paletteColorCount = 256;
    stream.seek(0);
    stream.skip(0x20);
    // Read the palette
    _palette = new byte[_paletteColorCount * 3]; 
    for (uint16 i = 0; i < _paletteColorCount; i++) {
        _palette[i * 3 + 0] = stream.readByte();
        _palette[i * 3 + 1] = stream.readByte();
        _palette[i * 3 + 2] = stream.readByte();
    }  

    _surface = new Graphics::Surface();
    _surface->create(640, 480, Graphics::PixelFormat::createFormatCLUT8());
    for (int h = 0; h < 480; ++h)
    {
        stream.read(_surface->getBasePtr(0, h - 1), 640);
    }

    return true;
}

}