png.c File Reference

#include "pngpriv.h"

Include dependency graph for png.c:

Go to the source code of this file.

Macros
#define	PNG_CHUNK(cHNK, index)   != (index) || ((index)+1)
#define	PNG_CHUNK(cHNK, index)   !PNG_CHUNK_NAME_VALID(png_ ## cHNK) ||

Typedefs
typedef png_libpng_version_1_6_54	Your_png_h_is_not_version_1_6_54

Functions
png_voidp PNGAPI	png_get_io_ptr (png_const_structrp png_ptr)
png_const_charp PNGAPI	png_get_copyright (png_const_structrp png_ptr)
png_const_charp PNGAPI	png_get_libpng_ver (png_const_structrp png_ptr)
png_const_charp PNGAPI	png_get_header_ver (png_const_structrp png_ptr)
png_const_charp PNGAPI	png_get_header_version (png_const_structrp png_ptr)
png_uint_32 PNGAPI	png_access_version_number (void)

Macro Definition Documentation

PNG_CHUNK [1/2]

#define PNG_CHUNK	(		cHNK,
			index
	)		!= (index) || ((index)+1)

Definition at line 37 of file png.c.

PNG_CHUNK [2/2]

#define PNG_CHUNK	(		cHNK,
			index
	)		!PNG_CHUNK_NAME_VALID(png_ ## cHNK) ||

Definition at line 37 of file png.c.

Typedef Documentation

Your_png_h_is_not_version_1_6_54

typedef png_libpng_version_1_6_54 Your_png_h_is_not_version_1_6_54

Definition at line 16 of file png.c.

Function Documentation

png_access_version_number()

png_uint_32 PNGAPI png_access_version_number

(

void

)

Definition at line 991 of file png.c.

{
   /* Version of *.c files used when building libpng */
   return (png_uint_32)PNG_LIBPNG_VER;
}

png_get_copyright()

png_const_charp PNGAPI png_get_copyright

(

png_const_structrp

png_ptr

)

Definition at line 816 of file png.c.

{
   PNG_UNUSED(png_ptr)  /* Silence compiler warning about unused png_ptr */
#ifdef PNG_STRING_COPYRIGHT
   return PNG_STRING_COPYRIGHT
#else
   return PNG_STRING_NEWLINE \
      "libpng version 1.6.54" PNG_STRING_NEWLINE \
      "Copyright (c) 2018-2026 Cosmin Truta" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
      PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
#endif
}

png_get_header_ver()

png_const_charp PNGAPI png_get_header_ver

(

png_const_structrp

png_ptr

)

Definition at line 849 of file png.c.

{
   /* Version of *.h files used when building libpng */
   PNG_UNUSED(png_ptr)  /* Silence compiler warning about unused png_ptr */
   return PNG_LIBPNG_VER_STRING;
}

Referenced by png_get_libpng_ver().

png_get_header_version()

png_const_charp PNGAPI png_get_header_version

(

png_const_structrp

png_ptr

)

Definition at line 857 of file png.c.

{
   /* Returns longer string containing both version and date */
   PNG_UNUSED(png_ptr)  /* Silence compiler warning about unused png_ptr */
#ifdef __STDC__
   return PNG_HEADER_VERSION_STRING
#  ifndef PNG_READ_SUPPORTED
      " (NO READ SUPPORT)"
#  endif
      PNG_STRING_NEWLINE;
#else
   return PNG_HEADER_VERSION_STRING;
#endif
}

png_get_io_ptr()

png_voidp PNGAPI png_get_io_ptr

(

png_const_structrp

png_ptr

)

Definition at line 691 of file png.c.

{
   if (png_ptr == NULL)
      return NULL;
 
   return png_ptr->io_ptr;
}

Referenced by ReadMemoryPng(), user_read_data(), and user_write_data().

png_get_libpng_ver()

png_const_charp PNGAPI png_get_libpng_ver

(

png_const_structrp

png_ptr

)

Definition at line 842 of file png.c.

{
   /* Version of *.c files used when building libpng */
   return png_get_header_ver(png_ptr);
}