/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c * * Copyright (c) 2018 Cosmin Truta * Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson * Copyright (c) 1996-1997 Andreas Dilger * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. * * 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 … # endif # ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET #define PNG_LITERAL_LEFT_SQUARE_BRACKET … # endif # ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET #define PNG_LITERAL_RIGHT_SQUARE_BRACKET … # endif # ifndef PNG_STRING_NEWLINE #define PNG_STRING_NEWLINE … # 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 … # endif # ifndef png_debug1 #define png_debug1 … # endif # ifndef png_debug2 #define png_debug2 … # 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 … # endif /* PNG_DEBUG_FILE */ # if (PNG_DEBUG > 1) # ifdef __STDC__ # ifndef png_debug #define png_debug … # endif # ifndef png_debug1 #define png_debug1 … # endif # ifndef png_debug2 #define png_debug2 … # endif # else /* __STDC __ */ # ifndef png_debug #define png_debug … # endif # ifndef png_debug1 #define png_debug1 … # endif # ifndef png_debug2 #define png_debug2 … # 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) … #endif #ifndef png_debug1 #define png_debug1(l, m, p1) … #endif #ifndef png_debug2 #define png_debug2(l, m, p1, p2) … #endif #endif /* PNGDEBUG_H */
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