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/* config1a.h -- configuration for the LZO1A algorithm
This file is part of the LZO real-time data compression library.
Copyright (C) 1996-2017 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/
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the library and is subject
to change.
*/
#ifndef __LZO_CONFIG1A_H
#define __LZO_CONFIG1A_H 1
#include "lzo_conf.h"
#include <lzo/lzo1a.h>
#undef LZO_COLLECT_STATS /* no support for stats here */
/***********************************************************************
// algorithm configuration
************************************************************************/
/* run bits (4 - 5) - the compressor and the decompressor
* must use the same value. */
#if !defined(RBITS)
# define RBITS 5
#endif
/* dictionary depth (0 - 6) - this only affects the compressor.
* 0 is fastest, 6 is best compression ratio */
#if !defined(DDBITS)
# define DDBITS 0
#endif
/* compression level (1 - 9) - this only affects the compressor.
* 1 is fastest, 9 is best compression ratio */
#if !defined(CLEVEL)
# define CLEVEL 1 /* fastest by default */
#endif
/* check configuration */
#if (RBITS < 4 || RBITS > 5)
# error "invalid RBITS"
#endif
#if (DDBITS < 0 || DDBITS > 6)
# error "invalid DDBITS"
#endif
#if (CLEVEL < 1 || CLEVEL > 9)
# error "invalid CLEVEL"
#endif
/***********************************************************************
// internal configuration
************************************************************************/
/* add a special code so that the decompressor can detect the
* end of the compressed data block (overhead is 3 bytes per block) */
#undef LZO_EOF_CODE
/***********************************************************************
// algorithm internal configuration
************************************************************************/
/* choose the hashing strategy */
#ifndef LZO_HASH
#define LZO_HASH LZO_HASH_LZO_INCREMENTAL_A
#endif
/* config */
#define R_BITS RBITS
#define DD_BITS DDBITS
#ifndef D_BITS
#define D_BITS 16
#endif
/***********************************************************************
// optimization and debugging
************************************************************************/
/* Collect statistics */
#if 0 && !defined(LZO_COLLECT_STATS)
# define LZO_COLLECT_STATS 1
#endif
/***********************************************************************
//
************************************************************************/
#define M3O_BITS M2O_BITS
#define M3L_BITS CHAR_BIT
#define M3_MAX_LEN (M3_MIN_LEN + LZO_SIZE(M3L_BITS) - 1)
#define _MAX_OFFSET _M2_MAX_OFFSET
#define LZO_NO_M3 1
#include "lzo1b_de.h"
#include "stats1b.h"
#include "lzo1b_cc.h"
/***********************************************************************
// check for total LZO1/LZO1A compatibility
************************************************************************/
#undef M2_MARKER
#define M2_MARKER (1 << M2O_BITS)
#if (R_BITS != 5)
# error
#endif
#if (M2O_BITS != 5)
# error
#endif
#if (M3O_BITS != 5)
# error
#endif
#if (M2_MIN_LEN != 3)
# error
#endif
#if (M2_MAX_LEN != 8)
# error
#endif
#if (M3_MIN_LEN != 9)
# error
#endif
#if (M3_MAX_LEN != 264)
# error
#endif
#if (_M2_MAX_OFFSET != (1u << 13))
# error
#endif
#if (_M2_MAX_OFFSET != _M3_MAX_OFFSET)
# error
#endif
#if (_M2_MAX_OFFSET != _MAX_OFFSET)
# error
#endif
#if (R0MIN != 32)
# error
#endif
#if (R0MAX != 287)
# error
#endif
#if (R0FAST != 280)
# error
#endif
#endif /* already included */
/* vim:set ts=4 sw=4 et: */
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