XFA: Upgrade libpng to 1.6.20.

third_party/libpng/pngdebug.h

 
 /* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
  *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.8 [December 19, 2013]
+ * 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 1.5.0 [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
+ *          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 */
@@ skipping 31 matching lines @@
 #      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":"")))); \
+       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 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
+       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 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
+       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":""))), \
@@ skipping 32 matching lines @@
 #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 */