| |
| /* pngdebug.h - Debugging macros for libpng, also used in pngtest.c |
| * |
| * Copyright (c) 1998-2010 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 version 1.5.0 - August 26, 2010 |
| * |
| * 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 */ |