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/* lzo1x.h -- public interface of the LZO1X compression algorithm
This file is part of the LZO real-time data compression library.
Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
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.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer
markus.oberhumer@jk.uni-linz.ac.at
*/
#ifndef __LZO1X_H
#define __LZO1X_H
#ifndef __LZOCONF_H
#include "lzoconf.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************************
//
************************************************************************/
/* Memory required for the wrkmem parameter.
* When the required size is 0, you can also pass a NULL pointer.
*/
#define LZO1X_MEM_COMPRESS ((lzo_uint) (16384L * sizeof(lzo_byte *)))
#define LZO1X_MEM_DECOMPRESS (0)
#define LZO1X_MEM_OPTIMIZE (0)
/* decompression */
LZO_EXTERN(int)
lzo1x_decompress ( const lzo_byte *src, lzo_uint src_len,
lzo_byte *dst, lzo_uint *dst_len,
lzo_voidp wrkmem /* NOT USED */ );
/* safe decompression with overrun testing */
LZO_EXTERN(int)
lzo1x_decompress_safe ( const lzo_byte *src, lzo_uint src_len,
lzo_byte *dst, lzo_uint *dst_len,
lzo_voidp wrkmem /* NOT USED */ );
/***********************************************************************
//
************************************************************************/
LZO_EXTERN(int)
lzo1x_1_compress ( const lzo_byte *src, lzo_uint src_len,
lzo_byte *dst, lzo_uint *dst_len,
lzo_voidp wrkmem );
/***********************************************************************
// special compressor versions
************************************************************************/
/* this version needs only 8kB work memory */
#define LZO1X_1_11_MEM_COMPRESS ((lzo_uint) (2048L * sizeof(lzo_byte *)))
LZO_EXTERN(int)
lzo1x_1_11_compress ( const lzo_byte *src, lzo_uint src_len,
lzo_byte *dst, lzo_uint *dst_len,
lzo_voidp wrkmem );
/* use this version if you need a little more compression speed */
#define LZO1X_1_15_MEM_COMPRESS ((lzo_uint) (32768L * sizeof(lzo_byte *)))
LZO_EXTERN(int)
lzo1x_1_15_compress ( const lzo_byte *src, lzo_uint src_len,
lzo_byte *dst, lzo_uint *dst_len,
lzo_voidp wrkmem );
/***********************************************************************
// better compression ratio at the cost of more memory and time
************************************************************************/
#define LZO1X_999_MEM_COMPRESS ((lzo_uint) (14 * 16384L * sizeof(short)))
#if !defined(LZO_999_UNSUPPORTED)
LZO_EXTERN(int)
lzo1x_999_compress ( const lzo_byte *src, lzo_uint src_len,
lzo_byte *dst, lzo_uint *dst_len,
lzo_voidp wrkmem );
#endif
/***********************************************************************
// optimize a compressed data block
************************************************************************/
LZO_EXTERN(int)
lzo1x_optimize ( lzo_byte *in , lzo_uint in_len,
lzo_byte *out, lzo_uint *out_len,
lzo_voidp wrkmem );
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* already included */
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