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blocky8.h

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00001 /* ResidualVM - A 3D game interpreter
00002  *
00003  * ResidualVM is the legal property of its developers, whose names
00004  * are too numerous to list here. Please refer to the COPYRIGHT
00005  * file distributed with this source distribution.
00006  *
00007  * This program is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU General Public License
00009  * as published by the Free Software Foundation; either version 2
00010  * of the License, or (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00020  *
00021  */
00022 
00023 #ifndef SMUSH_BLOCKY8_H
00024 #define SMUSH_BLOCKY8_H
00025 
00026 #include "common/scummsys.h"
00027 
00028 namespace Grim {
00029 
00030 class Blocky8 {
00031 private:
00032 
00033     byte *_deltaBufs[2];
00034     byte *_deltaBuf;
00035     byte *_curBuf;
00036     int32 _prevSeqNb;
00037     int _lastTableWidth;
00038     const byte *_d_src, *_paramPtr;
00039     int _d_pitch;
00040     int32 _offset1, _offset2;
00041     byte *_tableBig;
00042     byte *_tableSmall;
00043     int16 _table[256];
00044     int32 _frameSize;
00045     int _width, _height;
00046 
00047     void makeTablesInterpolation(int param);
00048     void makeTables47(int width);
00049     void level1(byte *d_dst);
00050     void level2(byte *d_dst);
00051     void level3(byte *d_dst);
00052     void decode2(byte *dst, const byte *src, int width, int height, const byte *param_ptr);
00053 
00054 public:
00055     Blocky8();
00056     ~Blocky8();
00057     void init(int width, int height);
00058     void deinit();
00059     bool decode(byte *dst, const byte *src);
00060 };
00061 
00062 } // End of namespace Grim
00063 
00064 #endif


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