mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 01:32:08 +00:00
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/*
|
|
This file is part of the LZO real-time data compression library.
|
|
|
|
Copyright (C) 1996..2008 Markus Franz Xaver Johannes Oberhumer
|
|
All Rights Reserved.
|
|
|
|
Markus F.X.J. Oberhumer <markus@oberhumer.com>
|
|
http://www.oberhumer.com/opensource/lzo/
|
|
|
|
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.
|
|
*/
|
|
|
|
#include "liblzo_interface.h"
|
|
|
|
/* lzo-2.03/src/config1x.h */
|
|
#define M2_MIN_LEN 3
|
|
#define M2_MAX_LEN 8
|
|
#define M3_MAX_LEN 33
|
|
#define M4_MAX_LEN 9
|
|
#define M1_MAX_OFFSET 0x0400
|
|
#define M2_MAX_OFFSET 0x0800
|
|
#define M3_MAX_OFFSET 0x4000
|
|
#define M4_MAX_OFFSET 0xbfff
|
|
#define M1_MARKER 0
|
|
#define M3_MARKER 32
|
|
#define M4_MARKER 16
|
|
|
|
#define MX_MAX_OFFSET (M1_MAX_OFFSET + M2_MAX_OFFSET)
|
|
#define MIN_LOOKAHEAD (M2_MAX_LEN + 1)
|
|
|
|
#define LZO_EOF_CODE
|
|
|
|
/* lzo-2.03/src/lzo_dict.h */
|
|
#define GINDEX(m_pos,m_off,dict,dindex,in) m_pos = dict[dindex]
|
|
#define DX2(p,s1,s2) \
|
|
(((((unsigned)((p)[2]) << (s2)) ^ (p)[1]) << (s1)) ^ (p)[0])
|
|
//#define DA3(p,s1,s2,s3) ((DA2((p)+1,s2,s3) << (s1)) + (p)[0])
|
|
//#define DS3(p,s1,s2,s3) ((DS2((p)+1,s2,s3) << (s1)) - (p)[0])
|
|
#define DX3(p,s1,s2,s3) ((DX2((p)+1,s2,s3) << (s1)) ^ (p)[0])
|
|
|
|
#define D_SIZE (1U << D_BITS)
|
|
#define D_MASK ((1U << D_BITS) - 1)
|
|
#define D_HIGH ((D_MASK >> 1) + 1)
|
|
|
|
#define LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,max_offset) \
|
|
( \
|
|
m_pos = ip - (unsigned)(ip - m_pos), \
|
|
((uintptr_t)m_pos < (uintptr_t)in \
|
|
|| (m_off = (unsigned)(ip - m_pos)) <= 0 \
|
|
|| m_off > max_offset) \
|
|
)
|
|
|
|
#define DENTRY(p,in) (p)
|
|
#define UPDATE_I(dict,drun,index,p,in) dict[index] = DENTRY(p,in)
|
|
|
|
#define DMS(v,s) ((unsigned) (((v) & (D_MASK >> (s))) << (s)))
|
|
#define DM(v) ((unsigned) ((v) & D_MASK))
|
|
#define DMUL(a,b) ((unsigned) ((a) * (b)))
|
|
|
|
/* lzo-2.03/src/lzo_ptr.h */
|
|
#define pd(a,b) ((unsigned)((a)-(b)))
|
|
|
|
# define TEST_IP (ip < ip_end)
|
|
# define NEED_IP(x) \
|
|
if ((unsigned)(ip_end - ip) < (unsigned)(x)) goto input_overrun
|
|
|
|
# undef TEST_OP /* don't need both of the tests here */
|
|
# define TEST_OP 1
|
|
# define NEED_OP(x) \
|
|
if ((unsigned)(op_end - op) < (unsigned)(x)) goto output_overrun
|
|
|
|
#define HAVE_ANY_OP 1
|
|
|
|
//#if defined(LZO_TEST_OVERRUN_LOOKBEHIND)
|
|
# define TEST_LB(m_pos) if (m_pos < out || m_pos >= op) goto lookbehind_overrun
|
|
//# define TEST_LBO(m_pos,o) if (m_pos < out || m_pos >= op - (o)) goto lookbehind_overrun
|
|
//#else
|
|
//# define TEST_LB(m_pos) ((void) 0)
|
|
//# define TEST_LBO(m_pos,o) ((void) 0)
|
|
//#endif
|