diff options
Diffstat (limited to 'lzo/src/lzo_mchw.ch')
| -rw-r--r-- | lzo/src/lzo_mchw.ch | 70 |
1 files changed, 25 insertions, 45 deletions
diff --git a/lzo/src/lzo_mchw.ch b/lzo/src/lzo_mchw.ch index a8c4fec5..bcfec46b 100644 --- a/lzo/src/lzo_mchw.ch +++ b/lzo/src/lzo_mchw.ch @@ -2,19 +2,7 @@ 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 + Copyright (C) 1996-2015 Markus Franz Xaver Johannes Oberhumer All Rights Reserved. The LZO library is free software; you can redistribute it and/or @@ -44,7 +32,7 @@ typedef struct { - int init; + unsigned init; lzo_uint look; /* bytes in lookahead buffer */ @@ -67,16 +55,16 @@ typedef struct lzo_uint printcount; /* counter for reporting progress every 1K bytes */ /* some stats */ - unsigned long lit_bytes; - unsigned long match_bytes; - unsigned long rep_bytes; - unsigned long lazy; + lzo_uint lit_bytes; + lzo_uint match_bytes; + lzo_uint rep_bytes; + lzo_uint lazy; #if defined(LZO1B) lzo_uint r1_m_len; /* some stats */ - unsigned long r1_r, m3_r, m2_m, m3_m; + lzo_uint r1_r, m3_r, m2_m, m3_m; #endif #if defined(LZO1C) @@ -84,7 +72,7 @@ typedef struct lzo_bytep m3; /* some stats */ - unsigned long r1_r, m3_r, m2_m, m3_m; + lzo_uint r1_r, m3_r, m2_m, m3_m; #endif #if defined(LZO1F) @@ -92,7 +80,7 @@ typedef struct lzo_uint r1_m_len; /* some stats */ - unsigned long r1_r, m2_m, m3_m; + lzo_uint r1_r, m2_m, m3_m; #endif #if defined(LZO1X) || defined(LZO1Y) || defined(LZO1Z) @@ -100,27 +88,19 @@ typedef struct lzo_uint r1_m_len; /* some stats */ - unsigned long m1a_m, m1b_m, m2_m, m3_m, m4_m; - unsigned long lit1_r, lit2_r, lit3_r; + lzo_uint m1a_m, m1b_m, m2_m, m3_m, m4_m; + lzo_uint lit1_r, lit2_r, lit3_r; #endif #if defined(LZO2A) /* some stats */ - unsigned long m1, m2, m3, m4; + lzo_uint m1, m2, m3, m4; #endif } LZO_COMPRESS_T; -#if (LZO_CC_BORLANDC && LZO_ARCH_I086) && (__BORLANDC__ < 0x0450) - /* work around a Borland C 3.1 bug */ -# define getbyte(c) ((c).ip < (c).in_end ? (c).ip +=1, (c).ip[-1] : (-1)) -#elif defined(__TURBOC__) && defined(__TOS__) - /* work around a bug in Turbo C / Pure C (Atari ST) */ -# define getbyte(c) ((c).ip < (c).in_end ? (int)(unsigned) *((c).ip)++ : (-1)) -#else -# define getbyte(c) ((c).ip < (c).in_end ? *((c).ip)++ : (-1)) -#endif +#define getbyte(c) ((c).ip < (c).in_end ? *((c).ip)++ : (-1)) #include "lzo_swd.ch" @@ -132,7 +112,7 @@ LZO_COMPRESS_T; static int init_match ( LZO_COMPRESS_T *c, lzo_swd_p s, const lzo_bytep dict, lzo_uint dict_len, - lzo_uint32 flags ) + lzo_uint32_t flags ) { int r; @@ -148,11 +128,14 @@ init_match ( LZO_COMPRESS_T *c, lzo_swd_p s, c->lazy = 0; r = swd_init(s,dict,dict_len); - if (r != 0) + if (r != LZO_E_OK) + { + swd_exit(s); return r; + } s->use_best_off = (flags & 1) ? 1 : 0; - return r; + return LZO_E_OK; } @@ -178,8 +161,8 @@ find_match ( LZO_COMPRESS_T *c, lzo_swd_p s, c->textsize += this_len - skip; } - s->m_len = 1; - s->m_len = THRESHOLD; + s->m_len = SWD_THRESHOLD; + s->m_off = 0; #ifdef SWD_BEST_OFF if (s->use_best_off) lzo_memset(s->best_pos,0,sizeof(s->best_pos)); @@ -204,14 +187,14 @@ find_match ( LZO_COMPRESS_T *c, lzo_swd_p s, #if 0 /* brute force match search */ - if (c->m_len > THRESHOLD && c->m_len + 1 <= c->look) + if (c->m_len > SWD_THRESHOLD && c->m_len + 1 <= c->look) { const lzo_bytep ip = c->bp; const lzo_bytep m = c->bp - c->m_off; const lzo_bytep in = c->in; - if (ip - in > N) - in = ip - N; + if (ip - in > s->swd_n) + in = ip - s->swd_n; for (;;) { while (*in != *ip) @@ -236,7 +219,4 @@ find_match ( LZO_COMPRESS_T *c, lzo_swd_p s, } -/* -vi:ts=4:et -*/ - +/* vim:set ts=4 sw=4 et: */ |