mirror of
https://github.com/electronicarts/CnC_Remastered_Collection
synced 2024-04-24 15:32:18 +12:00
03416d24e1
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.
104 lines
4 KiB
C++
104 lines
4 KiB
C++
//
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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/LZWSTRAW.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 : LZWSTRAW.H *
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* *
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* Programmer : Joe L. Bostic *
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* *
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* Start Date : 07/02/96 *
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* *
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* Last Update : July 2, 1996 [JLB] *
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef LZWSTRAW_H
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#define LZWSTRAW_H
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#include "straw.h"
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/*
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** This class handles LZW compression/decompression to the data stream that is drawn through
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** this class. Note that for compression, two internal buffers are required. For decompression
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** only one buffer is required. This changes the memory footprint of this class depending on
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** the process desired.
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*/
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class LZWStraw : public Straw
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{
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public:
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typedef enum CompControl {
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COMPRESS,
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DECOMPRESS
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} CompControl;
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LZWStraw(CompControl control, int blocksize=1024*8);
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virtual ~LZWStraw(void);
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virtual int Get(void * source, int slen);
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private:
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/*
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** This tells the pipe if it should be decompressing or compressing the data stream.
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*/
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CompControl Control;
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/*
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** The number of bytes accumulated into the staging buffer.
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*/
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int Counter;
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/*
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** Pointer to the working buffer that compression/decompression will use.
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*/
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char * Buffer;
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char * Buffer2;
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/*
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** The working block size. Data will be compressed in chunks of this size.
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*/
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int BlockSize;
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/*
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** LZW compression requires a safety margin when decompressing over itself. This
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** margin is only for the worst case situation (very rare).
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*/
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int SafetyMargin;
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/*
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** Each block has a header of this format.
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*/
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struct {
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unsigned short CompCount; // Size of data block (compressed).
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unsigned short UncompCount; // Bytes of uncompressed data it represents.
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} BlockHeader;
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LZWStraw(LZWStraw & rvalue);
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LZWStraw & operator = (LZWStraw const & pipe);
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};
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#endif
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