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/* lzo1_99.c -- implementation of the LZO1-99 algorithm
This file is part of the LZO real-time data compression library.
Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
The LZO library 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 2 of
the License, or (at your option) any later version.
The LZO library 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 the LZO library; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzo/
*/
#define COMPRESS_ID 99
#define DDBITS 3
#define CLEVEL 9
/***********************************************************************
//
************************************************************************/
#define LZO_NEED_DICT_H
#include "config1.h"
/***********************************************************************
// compression internal entry point.
************************************************************************/
static int
_lzo1_do_compress ( const lzo_bytep in, lzo_uint in_len,
lzo_bytep out, lzo_uintp out_len,
lzo_voidp wrkmem,
lzo_compress_t func )
{
int r;
/* don't try to compress a block that's too short */
if (in_len <= 0)
{
*out_len = 0;
r = LZO_E_OK;
}
else if (in_len <= MIN_LOOKAHEAD + 1)
{
#if defined(LZO_RETURN_IF_NOT_COMPRESSIBLE)
*out_len = 0;
r = LZO_E_NOT_COMPRESSIBLE;
#else
*out_len = pd(STORE_RUN(out,in,in_len), out);
r = (*out_len > in_len) ? LZO_E_OK : LZO_E_ERROR;
#endif
}
else
r = func(in,in_len,out,out_len,wrkmem);
return r;
}
/***********************************************************************
//
************************************************************************/
#if !defined(COMPRESS_ID)
#define COMPRESS_ID _LZO_ECONCAT2(DD_BITS,CLEVEL)
#endif
#define LZO_CODE_MATCH_INCLUDE_FILE "lzo1_cm.ch"
#include "lzo1b_c.ch"
/***********************************************************************
//
************************************************************************/
#define LZO_COMPRESS \
LZO_CPP_ECONCAT3(lzo1_,COMPRESS_ID,_compress)
#define LZO_COMPRESS_FUNC \
LZO_CPP_ECONCAT3(_lzo1_,COMPRESS_ID,_compress_func)
/***********************************************************************
//
************************************************************************/
LZO_PUBLIC(int)
LZO_COMPRESS ( const lzo_bytep in, lzo_uint in_len,
lzo_bytep out, lzo_uintp out_len,
lzo_voidp wrkmem )
{
return _lzo1_do_compress(in,in_len,out,out_len,wrkmem,do_compress);
}
/*
vi:ts=4:et
*/
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