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comparison lib/libpng/pngdebug.h @ 2296:6e178010fc29

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libpng
author Ritor1
date Mon, 17 Mar 2014 01:21:55 +0600
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2295:6fd03869f65c 2296:6e178010fc29
1
2 /* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
3 *
4 * Copyright (c) 1998-2013 Glenn Randers-Pehrson
5 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
6 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
7 *
8 * Last changed in libpng 1.6.8 [December 19, 2013]
9 *
10 * This code is released under the libpng license.
11 * For conditions of distribution and use, see the disclaimer
12 * and license in png.h
13 */
14
15 /* Define PNG_DEBUG at compile time for debugging information. Higher
16 * numbers for PNG_DEBUG mean more debugging information. This has
17 * only been added since version 0.95 so it is not implemented throughout
18 * libpng yet, but more support will be added as needed.
19 *
20 * png_debug[1-2]?(level, message ,arg{0-2})
21 * Expands to a statement (either a simple expression or a compound
22 * do..while(0) statement) that outputs a message with parameter
23 * substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG
24 * is undefined, 0 or 1 every png_debug expands to a simple expression
25 * (actually ((void)0)).
26 *
27 * level: level of detail of message, starting at 0. A level 'n'
28 * message is preceded by 'n' 3-space indentations (not implemented
29 * on Microsoft compilers unless PNG_DEBUG_FILE is also
30 * defined, to allow debug DLL compilation with no standard IO).
31 * message: a printf(3) style text string. A trailing '\n' is added
32 * to the message.
33 * arg: 0 to 2 arguments for printf(3) style substitution in message.
34 */
35 #ifndef PNGDEBUG_H
36 #define PNGDEBUG_H
37 /* These settings control the formatting of messages in png.c and pngerror.c */
38 /* Moved to pngdebug.h at 1.5.0 */
39 # ifndef PNG_LITERAL_SHARP
40 # define PNG_LITERAL_SHARP 0x23
41 # endif
42 # ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
43 # define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
44 # endif
45 # ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
46 # define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
47 # endif
48 # ifndef PNG_STRING_NEWLINE
49 # define PNG_STRING_NEWLINE "\n"
50 # endif
51
52 #ifdef PNG_DEBUG
53 # if (PNG_DEBUG > 0)
54 # if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
55 # include <crtdbg.h>
56 # if (PNG_DEBUG > 1)
57 # ifndef _DEBUG
58 # define _DEBUG
59 # endif
60 # ifndef png_debug
61 # define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
62 # endif
63 # ifndef png_debug1
64 # define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
65 # endif
66 # ifndef png_debug2
67 # define png_debug2(l,m,p1,p2) \
68 _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
69 # endif
70 # endif
71 # else /* PNG_DEBUG_FILE || !_MSC_VER */
72 # ifndef PNG_STDIO_SUPPORTED
73 # include <stdio.h> /* not included yet */
74 # endif
75 # ifndef PNG_DEBUG_FILE
76 # define PNG_DEBUG_FILE stderr
77 # endif /* PNG_DEBUG_FILE */
78
79 # if (PNG_DEBUG > 1)
80 # ifdef __STDC__
81 # ifndef png_debug
82 # define png_debug(l,m) \
83 do { \
84 int num_tabs=l; \
85 fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? " " : \
86 (num_tabs==2 ? " " : (num_tabs>2 ? " " : "")))); \
87 } while (0)
88 # endif
89 # ifndef png_debug1
90 # define png_debug1(l,m,p1) \
91 do { \
92 int num_tabs=l; \
93 fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? " " : \
94 (num_tabs==2 ? " " : (num_tabs>2 ? " " : ""))),p1); \
95 } while (0)
96 # endif
97 # ifndef png_debug2
98 # define png_debug2(l,m,p1,p2) \
99 do { \
100 int num_tabs=l; \
101 fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? " " : \
102 (num_tabs==2 ? " " : (num_tabs>2 ? " " : ""))),p1,p2);\
103 } while (0)
104 # endif
105 # else /* __STDC __ */
106 # ifndef png_debug
107 # define png_debug(l,m) \
108 do { \
109 int num_tabs=l; \
110 char format[256]; \
111 snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
112 (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
113 m,PNG_STRING_NEWLINE); \
114 fprintf(PNG_DEBUG_FILE,format); \
115 } while (0)
116 # endif
117 # ifndef png_debug1
118 # define png_debug1(l,m,p1) \
119 do { \
120 int num_tabs=l; \
121 char format[256]; \
122 snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
123 (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
124 m,PNG_STRING_NEWLINE); \
125 fprintf(PNG_DEBUG_FILE,format,p1); \
126 } while (0)
127 # endif
128 # ifndef png_debug2
129 # define png_debug2(l,m,p1,p2) \
130 do { \
131 int num_tabs=l; \
132 char format[256]; \
133 snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
134 (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
135 m,PNG_STRING_NEWLINE); \
136 fprintf(PNG_DEBUG_FILE,format,p1,p2); \
137 } while (0)
138 # endif
139 # endif /* __STDC __ */
140 # endif /* (PNG_DEBUG > 1) */
141
142 # endif /* _MSC_VER */
143 # endif /* (PNG_DEBUG > 0) */
144 #endif /* PNG_DEBUG */
145 #ifndef png_debug
146 # define png_debug(l, m) ((void)0)
147 #endif
148 #ifndef png_debug1
149 # define png_debug1(l, m, p1) ((void)0)
150 #endif
151 #ifndef png_debug2
152 # define png_debug2(l, m, p1, p2) ((void)0)
153 #endif
154 #endif /* PNGDEBUG_H */