Initial Source Code commit
Initial commit of original Tiberian Dawn and Red Alert source code converted to build as DLLs, and compatible with the release version of Command & Conquer Remastered.
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REDALERT/LZW.H
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REDALERT/LZW.H
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//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: /CounterStrike/LZW.H 1 3/03/97 10:25a Joe_bostic $ */
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : LZW.H *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : 08/28/96 *
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* *
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* Last Update : August 28, 1996 [JLB] *
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef _LZW_H
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#define _LZW_H
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#include "buff.h"
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class LZWEngine
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{
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public:
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LZWEngine(void);
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int Compress(Buffer const & input, Buffer const & output);
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int Uncompress(Buffer const & input, Buffer const & output);
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void Reset(void);
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private:
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typedef short CodeType;
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struct CodeClass {
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CodeType CodeValue;
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CodeType ParentCode;
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char CharValue;
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CodeClass(void) {}
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CodeClass(CodeType code, CodeType parent, char c) : CodeValue(code), ParentCode(parent), CharValue(c) {}
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enum {UNUSED=-1};
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void Make_Unused(void) {CodeValue = UNUSED;}
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bool Is_Unused(void) const {return(CodeValue == UNUSED);}
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bool Is_Matching(CodeType code, char c) const {return(ParentCode == code && CharValue == c);}
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};
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enum {
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BITS=12,
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MAX_CODE=((1 << BITS ) - 1),
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FIRST_CODE=257,
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END_OF_STREAM=256,
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TABLE_SIZE=5021
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};
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CodeClass dict[TABLE_SIZE];
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char decode_stack[TABLE_SIZE];
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int Find_Child_Node(CodeType parent_code, char child_character);
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int Decode_String(char * ptr, CodeType code);
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static int Make_LZW_Hash(CodeType code, char character);
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};
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int LZW_Compress(Buffer const & inbuff, Buffer const & outbuff);
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int LZW_Uncompress(Buffer const & inbuff, Buffer const & outbuff);
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#endif
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