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Diffstat (limited to 'app/lzo/src/lzo_mchw.ch')
| -rw-r--r-- | app/lzo/src/lzo_mchw.ch | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/app/lzo/src/lzo_mchw.ch b/app/lzo/src/lzo_mchw.ch deleted file mode 100644 index 8273612a..00000000 --- a/app/lzo/src/lzo_mchw.ch +++ /dev/null @@ -1,225 +0,0 @@ -/* lzo_mchw.ch -- matching functions using a window - - This file is part of the LZO real-time data compression library. - - Copyright (C) 1996-2014 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/ - */ - - -/*********************************************************************** -// -************************************************************************/ - -typedef struct -{ - unsigned init; - - lzo_uint look; /* bytes in lookahead buffer */ - - lzo_uint m_len; - lzo_uint m_off; - - lzo_uint last_m_len; - lzo_uint last_m_off; - - const lzo_bytep bp; - const lzo_bytep ip; - const lzo_bytep in; - const lzo_bytep in_end; - lzo_bytep out; - - lzo_callback_p cb; - - lzo_uint textsize; /* text size counter */ - lzo_uint codesize; /* code size counter */ - 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; - -#if defined(LZO1B) - lzo_uint r1_m_len; - - /* some stats */ - unsigned long r1_r, m3_r, m2_m, m3_m; -#endif - -#if defined(LZO1C) - lzo_uint r1_m_len; - lzo_bytep m3; - - /* some stats */ - unsigned long r1_r, m3_r, m2_m, m3_m; -#endif - -#if defined(LZO1F) - lzo_uint r1_lit; - lzo_uint r1_m_len; - - /* some stats */ - unsigned long r1_r, m2_m, m3_m; -#endif - -#if defined(LZO1X) || defined(LZO1Y) || defined(LZO1Z) - lzo_uint r1_lit; - 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; -#endif - -#if defined(LZO2A) - /* some stats */ - unsigned long m1, m2, m3, m4; -#endif -} -LZO_COMPRESS_T; - - -#define getbyte(c) ((c).ip < (c).in_end ? *((c).ip)++ : (-1)) - -#include "lzo_swd.ch" - - -/*********************************************************************** -// -************************************************************************/ - -static int -init_match ( LZO_COMPRESS_T *c, lzo_swd_p s, - const lzo_bytep dict, lzo_uint dict_len, - lzo_uint32_t flags ) -{ - int r; - - assert(!c->init); - c->init = 1; - - s->c = c; - - c->last_m_len = c->last_m_off = 0; - - c->textsize = c->codesize = c->printcount = 0; - c->lit_bytes = c->match_bytes = c->rep_bytes = 0; - c->lazy = 0; - - r = swd_init(s,dict,dict_len); - if (r != LZO_E_OK) - { - swd_exit(s); - return r; - } - - s->use_best_off = (flags & 1) ? 1 : 0; - return LZO_E_OK; -} - - -/*********************************************************************** -// -************************************************************************/ - -static int -find_match ( LZO_COMPRESS_T *c, lzo_swd_p s, - lzo_uint this_len, lzo_uint skip ) -{ - assert(c->init); - - if (skip > 0) - { - assert(this_len >= skip); - swd_accept(s, this_len - skip); - c->textsize += this_len - skip + 1; - } - else - { - assert(this_len <= 1); - c->textsize += this_len - skip; - } - - 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)); -#endif - swd_findbest(s); - c->m_len = s->m_len; - c->m_off = s->m_off; - - swd_getbyte(s); - - if (s->b_char < 0) - { - c->look = 0; - c->m_len = 0; - swd_exit(s); - } - else - { - c->look = s->look + 1; - } - c->bp = c->ip - c->look; - -#if 0 - /* brute force match search */ - 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 > s->swd_n) - in = ip - s->swd_n; - for (;;) - { - while (*in != *ip) - in++; - if (in == ip) - break; - if (in != m) - if (lzo_memcmp(in,ip,c->m_len+1) == 0) - printf("%p %p %p %5d\n",in,ip,m,c->m_len); - in++; - } - } -#endif - - if (c->cb && c->cb->nprogress && c->textsize > c->printcount) - { - (*c->cb->nprogress)(c->cb, c->textsize, c->codesize, 0); - c->printcount += 1024; - } - - return LZO_E_OK; -} - - -/* -vi:ts=4:et -*/ - |