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WSFComp.c
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WSFComp.c
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/********************************************************************
**
** Copyright (c) 1989 Mark R. Nelson
**
** LZW data compression/expansion demonstration program.
**
** April 13, 1989
**
*****************************************************************************/
///
/// \file WSFComp.c Compression Source
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <memory.h>
#include <string.h>
#include "WSFComp.h"
#ifdef ITCOMPSUPPORT
typedef unsigned char byte;
typedef unsigned short word;
typedef unsigned int dword;
byte *g_b;
unsigned int g_p;
unsigned int g_s;
#define BYTE byte
static unsigned char *sourcebuf = NULL;
static unsigned char *sourcepos = NULL;
static unsigned char *sourceend;
static int rembits = 0;
int getiw (void)
{
int l, h;
l = (*(byte*)g_b);
h = (*(byte*)g_b+1);
g_p+=2;
g_b+=2;
return l | (h << 8);
}
static int readblock(void)
{
int size;
size = getiw();
if (size < 0)
return size;
sourcebuf = malloc(size);
if (!sourcebuf)
return -1;
memcpy(sourcebuf,g_b,size);
g_p+=size;
g_b+=size;
sourcepos = sourcebuf;
sourceend = sourcebuf + size;
rembits = 8;
return 0;
}
static void freeblock(void)
{
free(sourcebuf);
sourceend = NULL;
sourcepos = NULL;
sourcebuf = NULL;
}
static int readbits(int bitwidth)
{
int val = 0;
int b = 0;
if (sourcepos >= sourceend) return val;
while (bitwidth > rembits) {
val |= *sourcepos++ << b;
if (sourcepos >= sourceend) return val;
b += rembits;
bitwidth -= rembits;
rembits = 8;
}
val |= (*sourcepos & ((1 << bitwidth) - 1)) << b;
*sourcepos >>= bitwidth;
rembits -= bitwidth;
return val;
}
/** WARNING - do we even need to pass `right`? */
/** WARNING - why bother memsetting at all? The whole array is written... */
/** WARNING - check for endianness safety */
unsigned int wsf_decompress8(unsigned char *f, signed char *left, signed char *right, int len, int cmwt)
{
int blocklen, blockpos;
byte bitwidth;
word val;
char d1, d2;
g_b = f;
g_p = 0;
memset(left, 0, len * sizeof(*left));
if (right) {
memset(right, 0, len * sizeof(*right));
len <<= 1;
}
while (len > 0) {
//Read a block of compressed data:
if (readblock())
return g_b-f;
//Set up a few variables
blocklen = (len < 0x8000) ? len : 0x8000; //Max block length is 0x8000 bytes
blockpos = 0;
bitwidth = 9;
d1 = d2 = 0;
//Start the decompression:
while (blockpos < blocklen) {
//Read a value:
val = (word)readbits(bitwidth);
//Check for bit width change:
if (bitwidth < 7) { //Method 1:
if (val == (1 << (bitwidth - 1))) {
val = (word)readbits(3) + 1;
bitwidth = (val < bitwidth) ? val : val + 1;
continue;
}
}
else if (bitwidth < 9) { //Method 2
byte border = (0xFF >> (9 - bitwidth)) - 4;
if (val > border && val <= (border + 8)) {
val -= border;
bitwidth = (val < bitwidth) ? val : val + 1;
continue;
}
}
else if (bitwidth == 9) { //Method 3
if (val & 0x100) {
bitwidth = (val + 1) & 0xFF;
continue;
}
}
else { //Illegal width, abort ?
freeblock();
return g_b-f;
}
//Expand the value to signed byte:
{
char v; //The sample value:
if (bitwidth < 8) {
byte shift = 8 - bitwidth;
v = (val << shift);
v >>= shift;
}
else
v = (char)val;
//And integrate the sample value
//(It always has to end with integration doesn't it ? ;-)
d1 += v;
d2 += d1;
}
//Store !
/* Version 2.15 was an unofficial version with hacked compression
* code. Yay, better compression :D
*/
if (right && (len & 1))
*right++ = (int)(signed char)(cmwt == 0x215 ? d2 : d1) << 8;
else
*left++ = (int)(signed char)(cmwt == 0x215 ? d2 : d1) << 8;
len--;
blockpos++;
}
freeblock();
}
return g_b-f;
}
unsigned int wsf_decompress16(unsigned char *f, signed char *left, signed char *right, int len, int cmwt)
{
int blocklen, blockpos;
byte bitwidth;
int val;
short d1, d2;
g_b = f;
g_p = 0;
memset(left, 0, len * sizeof(*left));
if (right) {
memset(right, 0, len * sizeof(*right));
len <<= 1;
}
while (len > 0) {
//Read a block of compressed data:
if (readblock())
return g_b-f;
//Set up a few variables
blocklen = (len < 0x4000) ? len : 0x4000; // Max block length is 0x4000 bytes
blockpos = 0;
bitwidth = 17;
d1 = d2 = 0;
//Start the decompression:
while (blockpos < blocklen) {
val = readbits(bitwidth);
//Check for bit width change:
if (bitwidth < 7) { //Method 1:
if (val == (1 << (bitwidth - 1))) {
val = readbits(4) + 1;
bitwidth = (val < bitwidth) ? val : val + 1;
continue;
}
}
else if (bitwidth < 17) { //Method 2
word border = (0xFFFF >> (17 - bitwidth)) - 8;
if (val > border && val <= (border + 16)) {
val -= border;
bitwidth = val < bitwidth ? val : val + 1;
continue;
}
}
else if (bitwidth == 17) { //Method 3
if (val & 0x10000) {
bitwidth = (val + 1) & 0xFF;
continue;
}
}
else { //Illegal width, abort ?
freeblock();
return g_b-f;
}
//Expand the value to signed byte:
{
short v; //The sample value:
if (bitwidth < 16) {
byte shift = 16 - bitwidth;
v = (short)(val << shift);
v >>= shift;
}
else
v = (short)val;
//And integrate the sample value
//(It always has to end with integration doesn't it ? ;-)
d1 += v;
d2 += d1;
}
//Store !
/* Version 2.15 was an unofficial version with hacked compression
* code. Yay, better compression :D
*/
if (right && (len & 1))
*right++ = (int)(signed short)(cmwt == 0x215 ? d2 : d1);
else
*left++ = (int)(signed short)(cmwt == 0x215 ? d2 : d1);
len--;
blockpos++;
}
freeblock();
}
return g_b-f;
}
unsigned int ITReadBits(unsigned int *bitbuf, unsigned int *bitnum, byte *ibuf, char n)
//-----------------------------------------------------------------
{
dword retval = 0;
unsigned int i = n;
if (n > 0)
{
do
{
if (!bitnum)
{
bitbuf[0] = *ibuf++;
bitnum[0] = 8;
}
retval >>= 1;
retval |= bitbuf[0] << 31;
bitbuf[0] >>= 1;
bitnum--;
i--;
} while (i);
i = n;
}
return (retval >> (32-i));
}
#define IT215_SUPPORT
unsigned int wsfITUnpack8Bit(char *pSample, unsigned int dwLen, byte * lpMemFile, unsigned int dwMemLength, int b215)
//-------------------------------------------------------------------------------------------
{
char *pDst = pSample;
byte *pSrc = lpMemFile;
unsigned int wHdr = 0;
unsigned int wCount = 0;
unsigned int bitbuf = 0;
unsigned int bitnum = 0;
BYTE bLeft = 0, bTemp = 0, bTemp2 = 0;
memset(pSample,0,dwLen);
while (dwLen)
{
unsigned int dwPos;
unsigned int d;
if (!wCount)
{
wCount = 0x8000;
wHdr = *((short*)pSrc);
pSrc += 2;
bLeft = 9;
bTemp = bTemp2 = 0;
bitbuf = bitnum = 0;
}
d = wCount;
if (d > dwLen) d = dwLen;
// Unpacking
dwPos = 0;
do
{
word wBits = (word)ITReadBits(&bitbuf, &bitnum, pSrc, bLeft);
if (bLeft < 7)
{
unsigned int i = 1 << (bLeft-1);
unsigned int j = wBits & 0xFFFF;
if (i != j) goto UnpackByte;
wBits = (word)(ITReadBits(&bitbuf, &bitnum, pSrc, 3) + 1) & 0xFF;
bLeft = ((BYTE)wBits < bLeft) ? (BYTE)wBits : (BYTE)((wBits+1) & 0xFF);
goto Next;
}
if (bLeft < 9)
{
word i = (0xFF >> (9 - bLeft)) + 4;
word j = i - 8;
if ((wBits <= j) || (wBits > i)) goto UnpackByte;
wBits -= j;
bLeft = ((BYTE)(wBits & 0xFF) < bLeft) ? (BYTE)(wBits & 0xFF) : (BYTE)((wBits+1) & 0xFF);
goto Next;
}
if (bLeft >= 10) goto SkipByte;
if (wBits >= 256)
{
bLeft = (BYTE)(wBits + 1) & 0xFF;
goto Next;
}
UnpackByte:
if (bLeft < 8)
{
BYTE shift = 8 - bLeft;
char c = (char)(wBits << shift);
c >>= shift;
wBits = (word)c;
}
wBits += bTemp;
bTemp = (BYTE)wBits;
bTemp2 += bTemp;
#ifdef IT215_SUPPORT
pDst[dwPos] = (b215) ? bTemp2 : bTemp;
#else
pDst[dwPos] = bTemp;
#endif
SkipByte:
dwPos++;
Next:
if (pSrc >= lpMemFile+dwMemLength+1) return 0;
} while (dwPos < d);
// Move On
wCount -= d;
dwLen -= d;
pDst += d;
}
return pSrc-lpMemFile;
}
unsigned int wsfITUnpack16Bit(char *pSample, unsigned int dwLen, byte *lpMemFile, unsigned int dwMemLength, int b215)
//--------------------------------------------------------------------------------------------
{
signed short *pDst = (signed short *)pSample;
byte *pSrc = lpMemFile;
unsigned int wHdr = 0;
unsigned int wCount = 0;
unsigned int bitbuf = 0;
unsigned int bitnum = 0;
BYTE bLeft = 0;
signed short wTemp = 0, wTemp2 = 0;
while (dwLen)
{
unsigned int d;
unsigned int dwPos;
if (!wCount)
{
wCount = 0x4000;
wHdr = *((short *)pSrc);
pSrc += 2;
bLeft = 17;
wTemp = wTemp2 = 0;
bitbuf = bitnum = 0;
}
d = wCount;
if (d > dwLen) d = dwLen;
// Unpacking
dwPos = 0;
do
{
unsigned int dwBits = ITReadBits(&bitbuf, &bitnum, pSrc, bLeft);
if (bLeft < 7)
{
unsigned int i = 1 << (bLeft-1);
unsigned int j = dwBits;
if (i != j) goto UnpackByte;
dwBits = ITReadBits(&bitbuf, &bitnum, pSrc, 4) + 1;
bLeft = ((BYTE)(dwBits & 0xFF) < bLeft) ? (BYTE)(dwBits & 0xFF) : (BYTE)((dwBits+1) & 0xFF);
goto Next;
}
if (bLeft < 17)
{
unsigned int i = (0xFFFF >> (17 - bLeft)) + 8;
unsigned int j = (i - 16) & 0xFFFF;
if ((dwBits <= j) || (dwBits > (i & 0xFFFF))) goto UnpackByte;
dwBits -= j;
bLeft = ((BYTE)(dwBits & 0xFF) < bLeft) ? (BYTE)(dwBits & 0xFF) : (BYTE)((dwBits+1) & 0xFF);
goto Next;
}
if (bLeft >= 18) goto SkipByte;
if (dwBits >= 0x10000)
{
bLeft = (BYTE)(dwBits + 1) & 0xFF;
goto Next;
}
UnpackByte:
if (bLeft < 16)
{
BYTE shift = 16 - bLeft;
signed short c = (signed short)(dwBits << shift);
c >>= shift;
dwBits = (unsigned int)c;
}
dwBits += wTemp;
wTemp = (signed short)dwBits;
wTemp2 += wTemp;
#ifdef IT215_SUPPORT
pDst[dwPos] = (b215) ? wTemp2 : wTemp;
#else
pDst[dwPos] = wTemp;
#endif
SkipByte:
dwPos++;
Next:
if (pSrc >= lpMemFile+dwMemLength+1) return 0;
} while (dwPos < d);
// Move On
wCount -= d;
dwLen -= d;
pDst += d;
if (pSrc >= lpMemFile+dwMemLength) break;
}
return (short*)pSrc-(short*)lpMemFile;
}
#endif
/********************************************************************
**
** This program gets a file name from the command line. It compresses the
** file, placing its output in a file named test.lzw. It then expands
** test.lzw into test.out. Test.out should then be an exact duplicate of
** the input file.
**
*************************************************************************/
/* minilzo.c -- mini version of the LZO real-time data compression library
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
*/
/*
* NOTE:
* the full LZO package can be found at
* http://www.infosys.tuwien.ac.at/Staff/lux/marco/lzo.html
*/
#ifdef MINILZO_HAVE_CONFIG_H
# include <config.h>
#endif
#undef LZO_HAVE_CONFIG_H
#ifdef MINILZO_HAVE_CONFIG_H
# define LZO_HAVE_CONFIG_H
#endif
#define __LZO_IN_MINILZO
#if !defined(LZO_NO_SYS_TYPES_H)
# include <sys/types.h>
#endif
#ifndef __LZO_CONF_H
#define __LZO_CONF_H
#ifndef __LZOCONF_H
# include <lzoconf.h>
#endif
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
# if defined(__TURBOC__) && (__TURBOC__ < 0x452)
# error You need a newer compiler version
# endif
#endif
#if !defined(LZO_HAVE_CONFIG_H)
# include <stddef.h>
# include <string.h>
# include <stdlib.h>
# define HAVE_MEMCMP
# define HAVE_MEMCPY
# define HAVE_MEMMOVE
# define HAVE_MEMSET
#else
# include <sys/types.h>
# if defined(STDC_HEADERS)
# include <string.h>
# include <stdlib.h>
# endif
# if defined(HAVE_STDDEF_H)
# include <stddef.h>
# endif
# if defined(HAVE_MEMORY_H)
# include <memory.h>
# endif
#endif
#if defined(MFX_MEMCMP_BROKEN)
# undef HAVE_MEMCMP
#endif
#undef NDEBUG
#if !defined(LZO_DEBUG)
# define NDEBUG
#endif
#if defined(LZO_DEBUG) || !defined(NDEBUG)
# include <stdio.h>
#endif
#include <assert.h>
#if defined(__BOUNDS_CHECKING_ON)
# include <unchecked.h>
#else
# define BOUNDS_CHECKING_OFF_DURING(stmt) stmt
# define BOUNDS_CHECKING_OFF_IN_EXPR(expr) (expr)
#endif
#if !defined(LZO_UNUSED)
# define LZO_UNUSED(parm) (parm = parm)
#endif
#if !defined(__inline__) && !defined(__GNUC__)
# if defined(__cplusplus)
# define __inline__ inline
# else
# define __inline__
# endif
#endif
#if 1
# define LZO_BYTE(x) ((unsigned char) (x))
#else
# define LZO_BYTE(x) ((unsigned char) ((x) & 0xff))
#endif
#if 0
# define LZO_USHORT(x) ((unsigned short) (x))
#else
# define LZO_USHORT(x) ((unsigned short) ((x) & 0xffff))
#endif
#define LZO_MAX(a,b) ((a) >= (b) ? (a) : (b))
#define LZO_MIN(a,b) ((a) <= (b) ? (a) : (b))
#define lzo_sizeof(type) ((lzo_uint) (sizeof(type)))
#define LZO_HIGH(array) ((lzo_uint) (sizeof(array)/sizeof(*(array))))
#define LZO_SIZE(bits) (1u << (bits))
#define LZO_MASK(bits) (LZO_SIZE(bits) - 1)
#define LZO_LSIZE(bits) (1ul << (bits))
#define LZO_LMASK(bits) (LZO_LSIZE(bits) - 1)
#define LZO_USIZE(bits) ((lzo_uint) 1 << (bits))
#define LZO_UMASK(bits) (LZO_USIZE(bits) - 1)
#define LZO_STYPE_MAX(b) (((1l << (8*(b)-2)) - 1l) + (1l << (8*(b)-2)))
#define LZO_UTYPE_MAX(b) (((1ul << (8*(b)-1)) - 1ul) + (1ul << (8*(b)-1)))
#if !defined(SIZEOF_UNSIGNED)
# if (UINT_MAX == 0xffff)
# define SIZEOF_UNSIGNED 2
# elif (UINT_MAX == 0xffffffffL)
# define SIZEOF_UNSIGNED 4
# else
# define SIZEOF_UNSIGNED 8
# endif
#endif
#if !defined(SIZEOF_UNSIGNED_LONG)
# if (ULONG_MAX == 0xffffffffL)
# define SIZEOF_UNSIGNED_LONG 4
# else
# define SIZEOF_UNSIGNED_LONG 8
# endif
#endif
#if !defined(SIZEOF_SIZE_T)
# define SIZEOF_SIZE_T SIZEOF_UNSIGNED
#endif
#if !defined(SIZE_T_MAX)
# define SIZE_T_MAX LZO_UTYPE_MAX(SIZEOF_SIZE_T)
#endif
#if 1 && defined(__LZO_i386) && (UINT_MAX == 0xffffffffL)
# if !defined(LZO_UNALIGNED_OK_2) && (USHRT_MAX == 0xffff)
# define LZO_UNALIGNED_OK_2
# endif
# if !defined(LZO_UNALIGNED_OK_4) && (LZO_UINT32_MAX == 0xffffffffL)
# define LZO_UNALIGNED_OK_4
# endif
#endif
#if defined(LZO_UNALIGNED_OK_2) || defined(LZO_UNALIGNED_OK_4)
# if !defined(LZO_UNALIGNED_OK)
# define LZO_UNALIGNED_OK
# endif
#endif
#if defined(LZO_ALIGNED_OK_4) && (LZO_UINT32_MAX != 0xffffffffL)
# error LZO_ALIGNED_OK_4 is defined
#endif
#define LZO_LITTLE_ENDIAN 1234
#define LZO_BIG_ENDIAN 4321
#define LZO_PDP_ENDIAN 3412
#if !defined(LZO_BYTE_ORDER)
# if defined(MFX_BYTE_ORDER)
# define LZO_BYTE_ORDER MFX_BYTE_ORDER
# elif defined(__LZO_i386)
# define LZO_BYTE_ORDER LZO_LITTLE_ENDIAN
# elif defined(BYTE_ORDER)
# define LZO_BYTE_ORDER BYTE_ORDER
# elif defined(__BYTE_ORDER)
# define LZO_BYTE_ORDER __BYTE_ORDER
# endif
#endif
#if defined(LZO_BYTE_ORDER)
# if (LZO_BYTE_ORDER != LZO_LITTLE_ENDIAN) && \
(LZO_BYTE_ORDER != LZO_BIG_ENDIAN)
# error invalid LZO_BYTE_ORDER
# endif
#endif
#if defined(LZO_UNALIGNED_OK) && !defined(LZO_BYTE_ORDER)
# error LZO_BYTE_ORDER is not defined
#endif
#define LZO_OPTIMIZE_GNUC_i386_IS_BUGGY
#if defined(NDEBUG) && !defined(LZO_DEBUG) && !defined(__BOUNDS_CHECKING_ON)
# if defined(__GNUC__) && defined(__i386__)
# if !defined(LZO_OPTIMIZE_GNUC_i386_IS_BUGGY)
# define LZO_OPTIMIZE_GNUC_i386
# endif
# endif
#endif
__LZO_EXTERN_C int __lzo_init_done;
__LZO_EXTERN_C const lzo_byte __lzo_copyright[];
__LZO_EXTERN_C const lzo_uint32 _lzo_crc32_table[256];
#define _LZO_STRINGIZE(x) #x
#define _LZO_MEXPAND(x) _LZO_STRINGIZE(x)
#define _LZO_CONCAT2(a,b) a ## b
#define _LZO_CONCAT3(a,b,c) a ## b ## c
#define _LZO_CONCAT4(a,b,c,d) a ## b ## c ## d
#define _LZO_CONCAT5(a,b,c,d,e) a ## b ## c ## d ## e
#define _LZO_ECONCAT2(a,b) _LZO_CONCAT2(a,b)
#define _LZO_ECONCAT3(a,b,c) _LZO_CONCAT3(a,b,c)
#define _LZO_ECONCAT4(a,b,c,d) _LZO_CONCAT4(a,b,c,d)
#define _LZO_ECONCAT5(a,b,c,d,e) _LZO_CONCAT5(a,b,c,d,e)
#ifndef __LZO_PTR_H
#define __LZO_PTR_H
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
# include <dos.h>
# if 1 && defined(__WATCOMC__)
# include <i86.h>
__LZO_EXTERN_C unsigned char _HShift;
# define __LZO_HShift _HShift
# elif 1 && defined(_MSC_VER)
__LZO_EXTERN_C unsigned short __near _AHSHIFT;
# define __LZO_HShift ((unsigned) &_AHSHIFT)
# elif defined(__LZO_WIN16)
# define __LZO_HShift 3
# else
# define __LZO_HShift 12
# endif
# if !defined(_FP_SEG) && defined(FP_SEG)
# define _FP_SEG FP_SEG
# endif
# if !defined(_FP_OFF) && defined(FP_OFF)
# define _FP_OFF FP_OFF
# endif
#endif
#if (UINT_MAX >= 0xffffffffL)
typedef ptrdiff_t lzo_ptrdiff_t;
#else
typedef long lzo_ptrdiff_t;
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(lzo_ptr_t)
# define __LZO_HAVE_PTR_T
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_LONG)
# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_LONG)
typedef unsigned long lzo_ptr_t;
typedef long lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED)
# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED)
typedef unsigned int lzo_ptr_t;
typedef int lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_SHORT)
# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_SHORT)
typedef unsigned short lzo_ptr_t;
typedef short lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
# endif
#endif
#if !defined(__LZO_HAVE_PTR_T)
# if defined(LZO_HAVE_CONFIG_H) || defined(SIZEOF_CHAR_P)
# error no suitable type for lzo_ptr_t
# else
typedef unsigned long lzo_ptr_t;
typedef long lzo_sptr_t;
# define __LZO_HAVE_PTR_T
# endif
#endif
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
#define PTR(a) ((lzo_bytep) (a))
#define PTR_ALIGNED_4(a) ((_FP_OFF(a) & 3) == 0)
#define PTR_ALIGNED2_4(a,b) (((_FP_OFF(a) | _FP_OFF(b)) & 3) == 0)
#else
#define PTR(a) ((lzo_ptr_t) (a))
#define PTR_LINEAR(a) PTR(a)
#define PTR_ALIGNED_4(a) ((PTR_LINEAR(a) & 3) == 0)
#define PTR_ALIGNED2_4(a,b) (((PTR_LINEAR(a) | PTR_LINEAR(b)) & 3) == 0)
#endif
#define PTR_LT(a,b) (PTR(a) < PTR(b))
#define PTR_GE(a,b) (PTR(a) >= PTR(b))
#define PTR_DIFF(a,b) ((lzo_ptrdiff_t) (PTR(a) - PTR(b)))
LZO_EXTERN(lzo_ptr_t)
__lzo_ptr_linear(const lzo_voidp ptr);
typedef union
{
short a_short;
int a_int;
long a_long;
char * a_char_p;
lzo_uint a_lzo_uint;
lzo_uint32 a_lzo_uint32;
lzo_ptrdiff_t a_lzo_ptrdiff_t;
lzo_ptr_t a_lzo_ptr_t;
lzo_bytep a_lzo_bytep;
lzo_bytepp a_lzo_bytepp;
}
lzo_align_t;
#ifdef __cplusplus
}
#endif
#endif
#define LZO_DETERMINISTIC
#define LZO_DICT_USE_PTR
#if 0 || defined(__LZO_DOS16) || defined(__LZO_WIN16)
# undef LZO_DICT_USE_PTR
#endif
#if !defined(lzo_moff_t)
#if 1
#define lzo_moff_t lzo_uint
#define lzo_cmoff_t lzo_uint
#else
#define lzo_moff_t lzo_ptrdiff_t
#define lzo_cmoff_t lzo_ptrdiff_t
#endif
#endif
#endif
LZO_PUBLIC(lzo_ptr_t)
__lzo_ptr_linear(const lzo_voidp ptr)
{
lzo_ptr_t p;
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
p = (((lzo_ptr_t)(_FP_SEG(ptr))) << (16 - __LZO_HShift)) + (_FP_OFF(ptr));
#else
p = PTR_LINEAR(ptr);
#endif
return p;
}
LZO_PUBLIC(unsigned)
__lzo_align_gap(const lzo_voidp ptr, lzo_uint size)
{
lzo_ptr_t p, s, n;
assert(size > 0);
p = __lzo_ptr_linear(ptr);
s = (lzo_ptr_t) (size - 1);
#if 0
assert((size & (size - 1)) == 0);
n = ((p + s) & ~s) - p;
#else
n = (((p + s) / size) * size) - p;
#endif
assert((long)n >= 0);
assert(n <= s);
return (unsigned)n;
}
#ifndef __LZO_UTIL_H
#define __LZO_UTIL_H
#ifndef __LZO_CONF_H
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if 1 && defined(HAVE_MEMCPY)
#if !defined(__LZO_DOS16) && !defined(__LZO_WIN16)
#define MEMCPY8_DS(dest,src,len) \
memcpy(dest,src,len); \
dest += len; \
src += len
#endif
#endif
#if !defined(MEMCPY8_DS)
#define MEMCPY8_DS(dest,src,len) \
{ register lzo_uint __l = (len) / 8; \
do { \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
*dest++ = *src++; \
} while (--__l > 0); }
#endif
#define MEMCPY_DS(dest,src,len) \
do *dest++ = *src++; \
while (--len > 0)
#define MEMMOVE_DS(dest,src,len) \
do *dest++ = *src++; \
while (--len > 0)
#if defined(LZO_OPTIMIZE_GNUC_i386)
#define BZERO8_PTR(s,n) \
__asm__ __volatile__( \
"movl %0,%%eax \n" \
"movl %1,%%edi \n" \
"movl %2,%%ecx \n" \
"cld \n" \
"rep \n" \
"stosl %%eax,(%%edi) \n" \
: \
:"g" (0),"g" (s),"g" (n) \
:"eax","edi","ecx", "memory", "cc" \
)
#elif (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMSET)
#define BZERO8_PTR(s,n) \
memset((lzo_voidp)(s),0,(n)*sizeof(lzo_byte *))
#else
#define BZERO8_PTR(s,n) \
lzo_memset((lzo_voidp)(s),0,(n)*lzo_sizeof(lzo_byte *))
#endif
#if 0
#if defined(__GNUC__) && defined(__i386__)
unsigned char lzo_rotr8(unsigned char value, int shift);
extern __inline__ unsigned char lzo_rotr8(unsigned char value, int shift)
{
unsigned char result;