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- /* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
- *
- * Copyright (c) 1998-2013 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 1.6.8 [December 19, 2013]
- *
- * 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' 3-space indentations (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)
- # 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 ? " " : \
- (num_tabs==2 ? " " : (num_tabs>2 ? " " : "")))); \
- } 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 ? " " : \
- (num_tabs==2 ? " " : (num_tabs>2 ? " " : ""))),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 ? " " : \
- (num_tabs==2 ? " " : (num_tabs>2 ? " " : ""))),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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