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/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
* * Copyright (c) 1998-2011 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * * Last changed in libpng 1.5.0 [January 6, 2011] * * This code is released under the libpng license. * For conditions of distribution and use, see the disclaimer * and license in png.h */
/* Define PNG_DEBUG at compile time for debugging information. Higher
* numbers for PNG_DEBUG mean more debugging information. This has * only been added since version 0.95 so it is not implemented throughout * libpng yet, but more support will be added as needed. * * png_debug[1-2]?(level, message ,arg{0-2}) * Expands to a statement (either a simple expression or a compound * do..while(0) statement) that outputs a message with parameter * substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG * is undefined, 0 or 1 every png_debug expands to a simple expression * (actually ((void)0)). * * level: level of detail of message, starting at 0. A level 'n' * message is preceded by 'n' tab characters (not implemented * on Microsoft compilers unless PNG_DEBUG_FILE is also * defined, to allow debug DLL compilation with no standard IO). * message: a printf(3) style text string. A trailing '\n' is added * to the message. * arg: 0 to 2 arguments for printf(3) style substitution in message. */#ifndef PNGDEBUG_H
#define PNGDEBUG_H
/* These settings control the formatting of messages in png.c and pngerror.c *//* Moved to pngdebug.h at 1.5.0 */# ifndef PNG_LITERAL_SHARP
# define PNG_LITERAL_SHARP 0x23
# endif
# ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
# endif
# ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
# endif
# ifndef PNG_STRING_NEWLINE
# define PNG_STRING_NEWLINE "\n"
# endif
#ifdef PNG_DEBUG
# if (PNG_DEBUG > 0)
# if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
# include <crtdbg.h>
# if (PNG_DEBUG > 1)
# ifndef _DEBUG
# define _DEBUG
# endif
# ifndef png_debug
# define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
# endif
# ifndef png_debug1
# define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
# endif
# ifndef png_debug2
# define png_debug2(l,m,p1,p2) \
_RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)# endif
# endif
# else /* PNG_DEBUG_FILE || !_MSC_VER */
# ifndef PNG_STDIO_SUPPORTED
# include <stdio.h> /* not included yet */
# endif
# ifndef PNG_DEBUG_FILE
# define PNG_DEBUG_FILE stderr
# endif /* PNG_DEBUG_FILE */
# if (PNG_DEBUG > 1)
/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
* non-ISO compilers */# ifdef __STDC__
# ifndef png_debug
# define png_debug(l,m) \
do { \ int num_tabs=l; \ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ } while (0)# endif
# ifndef png_debug1
# define png_debug1(l,m,p1) \
do { \ int num_tabs=l; \ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ } while (0)# endif
# ifndef png_debug2
# define png_debug2(l,m,p1,p2) \
do { \ int num_tabs=l; \ fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ } while (0)# endif
# else /* __STDC __ */
# ifndef png_debug
# define png_debug(l,m) \
do { \ int num_tabs=l; \ char format[256]; \ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ m,PNG_STRING_NEWLINE); \ fprintf(PNG_DEBUG_FILE,format); \ } while (0)# endif
# ifndef png_debug1
# define png_debug1(l,m,p1) \
do { \ int num_tabs=l; \ char format[256]; \ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ m,PNG_STRING_NEWLINE); \ fprintf(PNG_DEBUG_FILE,format,p1); \ } while (0)# endif
# ifndef png_debug2
# define png_debug2(l,m,p1,p2) \
do { \ int num_tabs=l; \ char format[256]; \ snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ m,PNG_STRING_NEWLINE); \ fprintf(PNG_DEBUG_FILE,format,p1,p2); \ } while (0)# endif
# endif /* __STDC __ */
# endif /* (PNG_DEBUG > 1) */
# endif /* _MSC_VER */
# endif /* (PNG_DEBUG > 0) */
#endif /* PNG_DEBUG */
#ifndef png_debug
# define png_debug(l, m) ((void)0)
#endif
#ifndef png_debug1
# define png_debug1(l, m, p1) ((void)0)
#endif
#ifndef png_debug2
# define png_debug2(l, m, p1, p2) ((void)0)
#endif
#endif /* PNGDEBUG_H */
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