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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef LURE_DECODE_H
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#define LURE_DECODE_H
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#include "lure/luredefs.h"
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#include "lure/memory.h"
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namespace Lure {
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class PictureDecoder {
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private:
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MemoryBlock *dataIn;
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uint32 BP;
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uint32 dataPos, dataPos2;
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uint32 outputOffset;
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byte AL, AH;
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byte CH, CL;
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void writeByte(MemoryBlock *dest, byte v);
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void writeBytes(MemoryBlock *dest, byte v, uint16 numBytes);
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byte DSSI(bool incr = true);
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byte ESBX(bool incr = true);
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void decrCtr();
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bool shlCarry();
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public:
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MemoryBlock *decode(MemoryBlock *src, uint32 maxOutputSize = SCREEN_SIZE + 1);
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MemoryBlock *egaDecode(MemoryBlock *src, uint32 maxOutputSize);
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MemoryBlock *vgaDecode(MemoryBlock *src, uint32 maxOutputSize);
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};
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class AnimationDecoder {
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public:
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static void rcl(uint16 &value, bool &carry);
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static uint32 decode_data(MemoryBlock *src, MemoryBlock *dest, uint32 srcPos);
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static void decode_data_2(MemoryBlock *src, byte *&pSrc, uint16 &currData,
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uint16 &bitCtr, uint16 &dx, bool &carry);
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};
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} // End of namespace Lure
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#endif
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