eae8e36ec4
for DEF file generation.
PNG_CALLBACK added to make callback definitions uniform. PNGAPI split
into PNGCAPI (base C form), PNGAPI (exports) and PNGCBAPI (callbacks),
and appropriate changes made to all files. Cygwin builds re-hinged to
allow procedure call standard changes and to remove the need for the DEF
file (fixes build on Cygwin).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement
to subscribe) or to glennrp at users.sourceforge.net
Glenn R-P
140 lines
4.7 KiB
C
140 lines
4.7 KiB
C
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/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
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*
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* Copyright (c) 1998-2010 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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*
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* Last changed in libpng version 1.5.0 - March 12, 2010
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*
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* This code is released under the libpng license.
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* For conditions of distribution and use, see the disclaimer
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* and license in png.h
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*/
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/* Define PNG_DEBUG at compile time for debugging information. Higher
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* numbers for PNG_DEBUG mean more debugging information. This has
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* only been added since version 0.95 so it is not implemented throughout
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* libpng yet, but more support will be added as needed.
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*
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* png_debug[1-2]?(level, message ,arg{0-2})
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* Expands to a statement (either a simple expression or a compound
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* do..while(0) statement) that outputs a message with parameter
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* substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG
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* is undefined, 0 or 1 every png_debug expands to a simple expression
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* (actually ((void)0)).
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*
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* level: level of detail of message, starting at 0. A level 'n'
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* message is preceded by 'n' tab characters (not implemented
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* on Microsoft compilers unless PNG_DEBUG_FILE is also
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* defined, to allow debug DLL compilation with no standard IO).
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* message: a printf(3) style text string. A trailing '\n' is added
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* to the message.
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* arg: 0 to 2 arguments for printf(3) style substitution in message.
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*/
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#ifndef PNGDEBUG_H
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#define PNGDEBUG_H
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#ifdef PNG_DEBUG
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# if (PNG_DEBUG > 0)
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# if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
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# include <crtdbg.h>
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# if (PNG_DEBUG > 1)
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# ifndef _DEBUG
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# define _DEBUG
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# endif
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# ifndef png_debug
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# define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
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# endif
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# ifndef png_debug1
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# define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
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# endif
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# ifndef png_debug2
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# define png_debug2(l,m,p1,p2) \
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_RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
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# endif
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# endif
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# else /* PNG_DEBUG_FILE || !_MSC_VER */
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# ifndef PNG_DEBUG_FILE
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# define PNG_DEBUG_FILE stderr
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# endif /* PNG_DEBUG_FILE */
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# if (PNG_DEBUG > 1)
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/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
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* non-ISO compilers
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*/
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# ifdef __STDC__
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# ifndef png_debug
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# define png_debug(l,m) \
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do { \
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int num_tabs=l; \
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fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
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(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
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} while (0)
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# endif
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# ifndef png_debug1
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# define png_debug1(l,m,p1) \
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do { \
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int num_tabs=l; \
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fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
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(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
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} while (0)
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# endif
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# ifndef png_debug2
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# define png_debug2(l,m,p1,p2) \
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do { \
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int num_tabs=l; \
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fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
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(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
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} while (0)
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# endif
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# else /* __STDC __ */
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# ifndef png_debug
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# define png_debug(l,m) \
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do { \
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int num_tabs=l; \
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char format[256]; \
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snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
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(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
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m,PNG_STRING_NEWLINE); \
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fprintf(PNG_DEBUG_FILE,format); \
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} while (0)
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# endif
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# ifndef png_debug1
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# define png_debug1(l,m,p1) \
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do { \
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int num_tabs=l; \
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char format[256]; \
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snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
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(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
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m,PNG_STRING_NEWLINE); \
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fprintf(PNG_DEBUG_FILE,format,p1); \
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} while (0)
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# endif
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# ifndef png_debug2
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# define png_debug2(l,m,p1,p2) \
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do { \
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int num_tabs=l; \
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char format[256]; \
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snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
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(num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
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m,PNG_STRING_NEWLINE); \
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fprintf(PNG_DEBUG_FILE,format,p1,p2); \
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} while (0)
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# endif
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# endif /* __STDC __ */
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# endif /* (PNG_DEBUG > 1) */
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# endif /* _MSC_VER */
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# endif /* (PNG_DEBUG > 0) */
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#endif /* PNG_DEBUG */
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#ifndef png_debug
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# define png_debug(l, m) ((void)0)
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#endif
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#ifndef png_debug1
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# define png_debug1(l, m, p1) ((void)0)
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#endif
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#ifndef png_debug2
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# define png_debug2(l, m, p1, p2) ((void)0)
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#endif
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#endif /* PNGDEBUG_H */
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