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Initial commit of Command & Conquer Renegade source code.

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LFeenanEA
2025-02-27 16:39:46 +00:00
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Code/wwlib/lzo.cpp Normal file
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/*
** Command & Conquer Renegade(tm)
** Copyright 2025 Electronic Arts Inc.
**
** 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/***********************************************************************************************
*** 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 ***
***********************************************************************************************
* *
* Project Name : WWLib *
* *
* $Archive:: /Commando/Code/wwlib/lzo.cpp $*
* *
* Author:: Greg Hjelstrom *
* *
* $Modtime:: 8/24/01 5:07p $*
* *
* $Revision:: 7 $*
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* LZOCompressor::Compress -- compress a buffer using LZO *
* LZOCompressor::Decompress -- decompress a buffer using LZO *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "lzo.h"
#include "mutex.h"
#include "wwdebug.h"
#include <stdlib.h>
/*
** Work Buffer for the LZOCompressor...
*/
lzo_byte LZOCompressor::WorkBuffer[LZO1X_MEM_COMPRESS + 1];
lzo_byte * LZOCompressor::EOWorkBuffer = &(LZOCompressor::WorkBuffer[LZO1X_MEM_COMPRESS + 1]);
static CriticalSectionClass mutex;
#define BUFFER_OVERRUN_TEST_VALUE ((char)0x7d)
/***********************************************************************************************
* LZOCompressor::Compress -- compress a buffer using LZO *
* *
* INPUT: *
* *
* OUTPUT: *
* *
* WARNINGS: *
* *
* HISTORY: *
* 7/19/99 GTH : Created. *
*=============================================================================================*/
int LZOCompressor::Compress
(
const lzo_byte * in,
lzo_uint in_len,
lzo_byte * out,
lzo_uint * out_len
)
{
CriticalSectionClass::LockClass m(mutex);
#ifdef WWDEBUG
// Debugging code to verify that the work buffer is not overrun...
*EOWorkBuffer = BUFFER_OVERRUN_TEST_VALUE;
#endif
int result = lzo1x_1_compress(in,in_len,out,out_len,WorkBuffer);
#ifdef WWDEBUG
WWASSERT(*EOWorkBuffer == BUFFER_OVERRUN_TEST_VALUE);
#endif
return result;
}
/***********************************************************************************************
* LZOCompressor::Decompress -- decompress a buffer using LZO *
* *
* INPUT: *
* *
* OUTPUT: *
* *
* WARNINGS: *
* *
* HISTORY: *
* 7/19/99 GTH : Created. *
*=============================================================================================*/
int LZOCompressor::Decompress
(
const lzo_byte * in,
lzo_uint in_len,
lzo_byte * out,
lzo_uint * out_len
)
{
CriticalSectionClass::LockClass m(mutex);
return lzo1x_decompress(in,in_len,out,out_len,NULL);
}