OptIO/src/lzo1_d.ch

/* 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
*/

Revision:	1.1
Committed:	Tue Feb 24 11:56:43 2009 UTC (16 years, 2 months ago) by loizides
Branch:	MAIN
CVS Tags:	Mit_032, Mit_031, Mit_025c_branch2, Mit_025c_branch1, Mit_030, Mit_029c, Mit_030_pre1, Mit_029a, Mit_029, Mit_029_pre1, Mit_028a, Mit_025c_branch0, Mit_028, Mit_027a, Mit_027, Mit_026, Mit_025e, Mit_025d, Mit_025c, Mit_025b, Mit_025a, Mit_025, Mit_025pre2, Mit_024b, Mit_025pre1, Mit_024a, Mit_024, Mit_023, Mit_022a, Mit_022, Mit_020d, TMit_020d, Mit_020c, Mit_021, Mit_021pre2, Mit_021pre1, Mit_020b, Mit_020a, Mit_020, Mit_020pre1, Mit_018, Mit_017, Mit_017pre3, Mit_017pre2, Mit_017pre1, V07-05-00, Mit_016, Mit_015b, Mit_015a, Mit_015, Mit_014e, Mit_014d, Mit_014c, Mit_014b, ConvRejection-10-06-09, Mit_014a, Mit_014, Mit_014pre3, Mit_014pre2, Mit_014pre1, Mit_013d, Mit_013c, Mit_013b, Mit_013a, Mit_013, Mit_013pre1, Mit_012i, Mit_012g, Mit_012f, Mit_012e, Mit_012d, Mit_012c, Mit_012b, Mit_012a, Mit_012, Mit_011a, Mit_011, Mit_010a, Mit_010, Mit_009c, Mit_009b, Mit_009a, Mit_009, Mit_008, Mit_008pre2, Mit_008pre1, HEAD
Branch point for:	Mit_025c_branch
Log Message:	Preload lib for compression improvements.
#	User	Rev	Content
1	loizides	1.1	/* lzo1_d.ch -- common decompression stuff
2
3			This file is part of the LZO real-time data compression library.
4
5			Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
6			Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
7			Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
8			Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
9			Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
10			Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
11			Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
12			Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
13			Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
14			Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
15			Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
16			Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
17			Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
18			All Rights Reserved.
19
20			The LZO library is free software; you can redistribute it and/or
21			modify it under the terms of the GNU General Public License as
22			published by the Free Software Foundation; either version 2 of
23			the License, or (at your option) any later version.
24
25			The LZO library is distributed in the hope that it will be useful,
26			but WITHOUT ANY WARRANTY; without even the implied warranty of
27			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28			GNU General Public License for more details.
29
30			You should have received a copy of the GNU General Public License
31			along with the LZO library; see the file COPYING.
32			If not, write to the Free Software Foundation, Inc.,
33			51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
34
35			Markus F.X.J. Oberhumer
36			<markus@oberhumer.com>
37			http://www.oberhumer.com/opensource/lzo/
38			*/
39
40
41
42			#if defined(LZO_TEST_OVERRUN)
43			# if !defined(LZO_TEST_OVERRUN_INPUT)
44			# define LZO_TEST_OVERRUN_INPUT 2
45			# endif
46			# if !defined(LZO_TEST_OVERRUN_OUTPUT)
47			# define LZO_TEST_OVERRUN_OUTPUT 2
48			# endif
49			# if !defined(LZO_TEST_OVERRUN_LOOKBEHIND)
50			# define LZO_TEST_OVERRUN_LOOKBEHIND
51			# endif
52			#endif
53
54
55			/***********************************************************************
56			// Overrun detection is internally handled by these macros:
57			//
58			// TEST_IP test input overrun at loop begin
59			// NEED_IP test input overrun at every input byte
60			//
61			// TEST_OP test output overrun at loop begin
62			// NEED_OP test output overrun at every output byte
63			//
64			// TEST_LB test match postion
65			//
66			// The fastest decompressor results when testing for no overruns
67			// and using LZO_EOF_CODE.
68			************************************************************************/
69
70			#undef TEST_IP
71			#undef TEST_OP
72			#undef TEST_LB
73			#undef TEST_LBO
74			#undef NEED_IP
75			#undef NEED_OP
76			#undef HAVE_TEST_IP
77			#undef HAVE_TEST_OP
78			#undef HAVE_NEED_IP
79			#undef HAVE_NEED_OP
80			#undef HAVE_ANY_IP
81			#undef HAVE_ANY_OP
82
83
84			#if defined(LZO_TEST_OVERRUN_INPUT)
85			# if (LZO_TEST_OVERRUN_INPUT >= 1)
86			# define TEST_IP (ip < ip_end)
87			# endif
88			# if (LZO_TEST_OVERRUN_INPUT >= 2)
89			# define NEED_IP(x) \
90			if ((lzo_uint)(ip_end - ip) < (lzo_uint)(x)) goto input_overrun
91			# endif
92			#endif
93
94			#if defined(LZO_TEST_OVERRUN_OUTPUT)
95			# if (LZO_TEST_OVERRUN_OUTPUT >= 1)
96			# define TEST_OP (op <= op_end)
97			# endif
98			# if (LZO_TEST_OVERRUN_OUTPUT >= 2)
99			# undef TEST_OP /* don't need both of the tests here */
100			# define NEED_OP(x) \
101			if ((lzo_uint)(op_end - op) < (lzo_uint)(x)) goto output_overrun
102			# endif
103			#endif
104
105			#if defined(LZO_TEST_OVERRUN_LOOKBEHIND)
106			# define TEST_LB(m_pos) if (m_pos < out \|\| m_pos >= op) goto lookbehind_overrun
107			# define TEST_LBO(m_pos,o) if (m_pos < out \|\| m_pos >= op - (o)) goto lookbehind_overrun
108			#else
109			# define TEST_LB(m_pos) ((void) 0)
110			# define TEST_LBO(m_pos,o) ((void) 0)
111			#endif
112
113
114			#if !defined(LZO_EOF_CODE) && !defined(TEST_IP)
115			/* if we have no EOF code, we have to test for the end of the input */
116			# define TEST_IP (ip < ip_end)
117			#endif
118
119
120			#if defined(TEST_IP)
121			# define HAVE_TEST_IP
122			#else
123			# define TEST_IP 1
124			#endif
125			#if defined(TEST_OP)
126			# define HAVE_TEST_OP
127			#else
128			# define TEST_OP 1
129			#endif
130
131			#if defined(NEED_IP)
132			# define HAVE_NEED_IP
133			#else
134			# define NEED_IP(x) ((void) 0)
135			#endif
136			#if defined(NEED_OP)
137			# define HAVE_NEED_OP
138			#else
139			# define NEED_OP(x) ((void) 0)
140			#endif
141
142
143			#if defined(HAVE_TEST_IP) \|\| defined(HAVE_NEED_IP)
144			# define HAVE_ANY_IP
145			#endif
146			#if defined(HAVE_TEST_OP) \|\| defined(HAVE_NEED_OP)
147			# define HAVE_ANY_OP
148			#endif
149
150
151
152			/*
153			vi:ts=4:et
154			*/
155