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Diffstat (limited to 'lzo/src/lzo1_d.ch')
| -rw-r--r-- | lzo/src/lzo1_d.ch | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/lzo/src/lzo1_d.ch b/lzo/src/lzo1_d.ch new file mode 100644 index 00000000..c1dad39f --- /dev/null +++ b/lzo/src/lzo1_d.ch @@ -0,0 +1,155 @@ +/* lzo1_d.ch -- common decompression stuff + + 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 + 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/ + */ + + + +#if defined(LZO_TEST_OVERRUN) +# if !defined(LZO_TEST_OVERRUN_INPUT) +# define LZO_TEST_OVERRUN_INPUT 2 +# endif +# if !defined(LZO_TEST_OVERRUN_OUTPUT) +# define LZO_TEST_OVERRUN_OUTPUT 2 +# endif +# if !defined(LZO_TEST_OVERRUN_LOOKBEHIND) +# define LZO_TEST_OVERRUN_LOOKBEHIND +# endif +#endif + + +/*********************************************************************** +// Overrun detection is internally handled by these macros: +// +// TEST_IP test input overrun at loop begin +// NEED_IP test input overrun at every input byte +// +// TEST_OP test output overrun at loop begin +// NEED_OP test output overrun at every output byte +// +// TEST_LB test match postion +// +// The fastest decompressor results when testing for no overruns +// and using LZO_EOF_CODE. +************************************************************************/ + +#undef TEST_IP +#undef TEST_OP +#undef TEST_LB +#undef TEST_LBO +#undef NEED_IP +#undef NEED_OP +#undef HAVE_TEST_IP +#undef HAVE_TEST_OP +#undef HAVE_NEED_IP +#undef HAVE_NEED_OP +#undef HAVE_ANY_IP +#undef HAVE_ANY_OP + + +#if defined(LZO_TEST_OVERRUN_INPUT) +# if (LZO_TEST_OVERRUN_INPUT >= 1) +# define TEST_IP (ip < ip_end) +# endif +# if (LZO_TEST_OVERRUN_INPUT >= 2) +# define NEED_IP(x) \ + if ((lzo_uint)(ip_end - ip) < (lzo_uint)(x)) goto input_overrun +# endif +#endif + +#if defined(LZO_TEST_OVERRUN_OUTPUT) +# if (LZO_TEST_OVERRUN_OUTPUT >= 1) +# define TEST_OP (op <= op_end) +# endif +# if (LZO_TEST_OVERRUN_OUTPUT >= 2) +# undef TEST_OP /* don't need both of the tests here */ +# define NEED_OP(x) \ + if ((lzo_uint)(op_end - op) < (lzo_uint)(x)) goto output_overrun +# endif +#endif + +#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 + + +#if !defined(LZO_EOF_CODE) && !defined(TEST_IP) + /* if we have no EOF code, we have to test for the end of the input */ +# define TEST_IP (ip < ip_end) +#endif + + +#if defined(TEST_IP) +# define HAVE_TEST_IP +#else +# define TEST_IP 1 +#endif +#if defined(TEST_OP) +# define HAVE_TEST_OP +#else +# define TEST_OP 1 +#endif + +#if defined(NEED_IP) +# define HAVE_NEED_IP +#else +# define NEED_IP(x) ((void) 0) +#endif +#if defined(NEED_OP) +# define HAVE_NEED_OP +#else +# define NEED_OP(x) ((void) 0) +#endif + + +#if defined(HAVE_TEST_IP) || defined(HAVE_NEED_IP) +# define HAVE_ANY_IP +#endif +#if defined(HAVE_TEST_OP) || defined(HAVE_NEED_OP) +# define HAVE_ANY_OP +#endif + + + +/* +vi:ts=4:et +*/ + |