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