The Tor Browser: media/libpng/pngconf.h@97036ab72558 (annotated)

media/libpng/pngconf.h@97036ab72558 (annotated)

media/libpng/pngconf.h

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* pngconf.h - machine configurable file for libpng
  *
  * libpng version 1.6.10 - March 6, 2014
  *
  * 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.)
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
  * and license in png.h
  *
  */
 /* Any machine specific code is near the front of this file, so if you
  * are configuring libpng for a machine, you may want to read the section
  * starting here down to where it starts to typedef png_color, png_text,
  * and png_info.
  */
 #ifndef PNGCONF_H
 #define PNGCONF_H
 /* To do: Do all of this in scripts/pnglibconf.dfa */
 #ifdef PNG_SAFE_LIMITS_SUPPORTED
 #  ifdef PNG_USER_WIDTH_MAX
 #    undef PNG_USER_WIDTH_MAX
 #    define PNG_USER_WIDTH_MAX 1000000L
 #  endif
 #  ifdef PNG_USER_HEIGHT_MAX
 #    undef PNG_USER_HEIGHT_MAX
 #    define PNG_USER_HEIGHT_MAX 1000000L
 #  endif
 #  ifdef PNG_USER_CHUNK_MALLOC_MAX
 #    undef PNG_USER_CHUNK_MALLOC_MAX
 #    define PNG_USER_CHUNK_MALLOC_MAX 4000000L
 #  endif
 #  ifdef PNG_USER_CHUNK_CACHE_MAX
 #    undef PNG_USER_CHUNK_CACHE_MAX
 #    define PNG_USER_CHUNK_CACHE_MAX 128
 #  endif
 #endif
 #ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */
 /* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C
  * compiler for correct compilation.  The following header files are required by
  * the standard.  If your compiler doesn't provide these header files, or they
  * do not match the standard, you will need to provide/improve them.
  */
 #include <limits.h>
 #include <stddef.h>
 /* Library header files.  These header files are all defined by ISOC90; libpng
  * expects conformant implementations, however, an ISOC90 conformant system need
  * not provide these header files if the functionality cannot be implemented.
  * In this case it will be necessary to disable the relevant parts of libpng in
  * the build of pnglibconf.h.
  *
  * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not
  * include this unnecessary header file.
  */
 #ifdef PNG_STDIO_SUPPORTED
    /* Required for the definition of FILE: */
 #  include <stdio.h>
 #endif
 #ifdef PNG_SETJMP_SUPPORTED
    /* Required for the definition of jmp_buf and the declaration of longjmp: */
 #  include <setjmp.h>
 #endif
 #ifdef PNG_CONVERT_tIME_SUPPORTED
    /* Required for struct tm: */
 #  include <time.h>
 #endif
 #endif /* PNG_BUILDING_SYMBOL_TABLE */
 /* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
  * PNG_NO_CONST; this is no longer supported except for data declarations which
  * apparently still cause problems in 2011 on some compilers.
  */
 #define PNG_CONST const /* backward compatibility only */
 /* This controls optimization of the reading of 16 and 32 bit values
  * from PNG files.  It can be set on a per-app-file basis - it
  * just changes whether a macro is used when the function is called.
  * The library builder sets the default; if read functions are not
  * built into the library the macro implementation is forced on.
  */
 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
 #  define PNG_USE_READ_MACROS
 #endif
 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
 #  if PNG_DEFAULT_READ_MACROS
 #    define PNG_USE_READ_MACROS
 #  endif
 #endif
 /* COMPILER SPECIFIC OPTIONS.
  *
  * These options are provided so that a variety of difficult compilers
  * can be used.  Some are fixed at build time (e.g. PNG_API_RULE
  * below) but still have compiler specific implementations, others
  * may be changed on a per-file basis when compiling against libpng.
  */
 /* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect
  * against legacy (pre ISOC90) compilers that did not understand function
  * prototypes.  It is not required for modern C compilers.
  */
 #ifndef PNGARG
 #  define PNGARG(arglist) arglist
 #endif
 /* Function calling conventions.
  * =============================
  * Normally it is not necessary to specify to the compiler how to call
  * a function - it just does it - however on x86 systems derived from
  * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
  * and some others) there are multiple ways to call a function and the
  * default can be changed on the compiler command line.  For this reason
  * libpng specifies the calling convention of every exported function and
  * every function called via a user supplied function pointer.  This is
  * done in this file by defining the following macros:
  *
  * PNGAPI    Calling convention for exported functions.
  * PNGCBAPI  Calling convention for user provided (callback) functions.
  * PNGCAPI   Calling convention used by the ANSI-C library (required
  *           for longjmp callbacks and sometimes used internally to
  *           specify the calling convention for zlib).
  *
  * These macros should never be overridden.  If it is necessary to
  * change calling convention in a private build this can be done
  * by setting PNG_API_RULE (which defaults to 0) to one of the values
  * below to select the correct 'API' variants.
  *
  * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
  *                This is correct in every known environment.
  * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
  *                the 'C' calling convention (from PNGCAPI) for
  *                callbacks (PNGCBAPI).  This is no longer required
  *                in any known environment - if it has to be used
  *                please post an explanation of the problem to the
  *                libpng mailing list.
  *
  * These cases only differ if the operating system does not use the C
  * calling convention, at present this just means the above cases
  * (x86 DOS/Windows sytems) and, even then, this does not apply to
  * Cygwin running on those systems.
  *
  * Note that the value must be defined in pnglibconf.h so that what
  * the application uses to call the library matches the conventions
  * set when building the library.
  */
 /* Symbol export
  * =============
  * When building a shared library it is almost always necessary to tell
  * the compiler which symbols to export.  The png.h macro 'PNG_EXPORT'
  * is used to mark the symbols.  On some systems these symbols can be
  * extracted at link time and need no special processing by the compiler,
  * on other systems the symbols are flagged by the compiler and just
  * the declaration requires a special tag applied (unfortunately) in a
  * compiler dependent way.  Some systems can do either.
  *
  * A small number of older systems also require a symbol from a DLL to
  * be flagged to the program that calls it.  This is a problem because
  * we do not know in the header file included by application code that
  * the symbol will come from a shared library, as opposed to a statically
  * linked one.  For this reason the application must tell us by setting
  * the magic flag PNG_USE_DLL to turn on the special processing before
  * it includes png.h.
  *
  * Four additional macros are used to make this happen:
  *
  * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
  *            the build or imported if PNG_USE_DLL is set - compiler
  *            and system specific.
  *
  * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
  *                       'type', compiler specific.
  *
  * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
  *                make a symbol exported from the DLL.  Not used in the
  *                public header files; see pngpriv.h for how it is used
  *                in the libpng build.
  *
  * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
  *                from a DLL - used to define PNG_IMPEXP when
  *                PNG_USE_DLL is set.
  */
 /* System specific discovery.
  * ==========================
  * This code is used at build time to find PNG_IMPEXP, the API settings
  * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
  * import processing is possible.  On Windows systems it also sets
  * compiler-specific macros to the values required to change the calling
  * conventions of the various functions.
  */
 #if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
     defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
   /* Windows system (DOS doesn't support DLLs).  Includes builds under Cygwin or
    * MinGW on any architecture currently supported by Windows.  Also includes
    * Watcom builds but these need special treatment because they are not
    * compatible with GCC or Visual C because of different calling conventions.
    */
 #  if PNG_API_RULE == 2
     /* If this line results in an error, either because __watcall is not
      * understood or because of a redefine just below you cannot use *this*
      * build of the library with the compiler you are using.  *This* build was
      * build using Watcom and applications must also be built using Watcom!
      */
 #    define PNGCAPI __watcall
 #  endif
 #  if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
 #    define PNGCAPI __cdecl
 #    if PNG_API_RULE == 1
        /* If this line results in an error __stdcall is not understood and
         * PNG_API_RULE should not have been set to '1'.
         */
 #      define PNGAPI __stdcall
 #    endif
 #  else
     /* An older compiler, or one not detected (erroneously) above,
      * if necessary override on the command line to get the correct
      * variants for the compiler.
      */
 #    ifndef PNGCAPI
 #      define PNGCAPI _cdecl
 #    endif
 #    if PNG_API_RULE == 1 && !defined(PNGAPI)
 #      define PNGAPI _stdcall
 #    endif
 #  endif /* compiler/api */
   /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
 #  if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
 #     error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
 #  endif
 #  if (defined(_MSC_VER) && _MSC_VER < 800) ||\
       (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
     /* older Borland and MSC
      * compilers used '__export' and required this to be after
      * the type.
      */
 #    ifndef PNG_EXPORT_TYPE
 #      define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
 #    endif
 #    define PNG_DLL_EXPORT __export
 #  else /* newer compiler */
 #    define PNG_DLL_EXPORT __declspec(dllexport)
 #    ifndef PNG_DLL_IMPORT
 #      define PNG_DLL_IMPORT __declspec(dllimport)
 #    endif
 #  endif /* compiler */
 #else /* !Windows */
 #  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
 #    define PNGAPI _System
 #  else /* !Windows/x86 && !OS/2 */
     /* Use the defaults, or define PNG*API on the command line (but
      * this will have to be done for every compile!)
      */
 #  endif /* other system, !OS/2 */
 #endif /* !Windows/x86 */
 /* Now do all the defaulting . */
 #ifndef PNGCAPI
 #  define PNGCAPI
 #endif
 #ifndef PNGCBAPI
 #  define PNGCBAPI PNGCAPI
 #endif
 #ifndef PNGAPI
 #  define PNGAPI PNGCAPI
 #endif
 /* PNG_IMPEXP may be set on the compilation system command line or (if not set)
  * then in an internal header file when building the library, otherwise (when
  * using the library) it is set here.
  */
 #ifndef PNG_IMPEXP
 #  if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
      /* This forces use of a DLL, disallowing static linking */
 #    define PNG_IMPEXP PNG_DLL_IMPORT
 #  endif
 #  ifndef PNG_IMPEXP
 #    define PNG_IMPEXP
 #  endif
 #endif
 /* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
  * 'attributes' as a storage class - the attributes go at the start of the
  * function definition, and attributes are always appended regardless of the
  * compiler.  This considerably simplifies these macros but may cause problems
  * if any compilers both need function attributes and fail to handle them as
  * a storage class (this is unlikely.)
  */
 #ifndef PNG_FUNCTION
 #  define PNG_FUNCTION(type, name, args, attributes) attributes type name args
 #endif
 #ifndef PNG_EXPORT_TYPE
 #  define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
 #endif
    /* The ordinal value is only relevant when preprocessing png.h for symbol
     * table entries, so we discard it here.  See the .dfn files in the
     * scripts directory.
     */
 #ifndef PNG_EXPORTA
 #  define PNG_EXPORTA(ordinal, type, name, args, attributes)\
       PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
         extern attributes)
 #endif
 /* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
  * so make something non-empty to satisfy the requirement:
  */
 #define PNG_EMPTY /*empty list*/
 #define PNG_EXPORT(ordinal, type, name, args)\
    PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
 /* Use PNG_REMOVED to comment out a removed interface. */
 #ifndef PNG_REMOVED
 #  define PNG_REMOVED(ordinal, type, name, args, attributes)
 #endif
 #ifndef PNG_CALLBACK
 #  define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
 #endif
 /* Support for compiler specific function attributes.  These are used
  * so that where compiler support is available incorrect use of API
  * functions in png.h will generate compiler warnings.
  *
  * Added at libpng-1.2.41.
  */
 #ifndef PNG_NO_PEDANTIC_WARNINGS
 #  ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
 #    define PNG_PEDANTIC_WARNINGS_SUPPORTED
 #  endif
 #endif
 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
   /* Support for compiler specific function attributes.  These are used
    * so that where compiler support is available, incorrect use of API
    * functions in png.h will generate compiler warnings.  Added at libpng
    * version 1.2.41.  Disabling these removes the warnings but may also produce
    * less efficient code.
    */
 #  if defined(__clang__)
      /* Clang defines both __clang__ and __GNUC__. Check __clang__ first. */
 #    if !defined(PNG_USE_RESULT) && __has_attribute(__warn_unused_result__)
 #      define PNG_USE_RESULT __attribute__((__warn_unused_result__))
 #    endif
 #    if !defined(PNG_NORETURN) && __has_attribute(__noreturn__)
 #      define PNG_NORETURN __attribute__((__noreturn__))
 #    endif
 #    if !defined(PNG_ALLOCATED) && __has_attribute(__malloc__)
 #      define PNG_ALLOCATED __attribute__((__malloc__))
 #    endif
 #    if !defined(PNG_DEPRECATED) && __has_attribute(__deprecated__)
 #      define PNG_DEPRECATED __attribute__((__deprecated__))
 #    endif
 #    if !defined(PNG_PRIVATE)
 #      ifdef __has_extension
 #        if __has_extension(attribute_unavailable_with_message)
 #          define PNG_PRIVATE __attribute__((__unavailable__(\
              "This function is not exported by libpng.")))
 #        endif
 #      endif
 #    endif
 #    ifndef PNG_RESTRICT
 #      define PNG_RESTRICT __restrict
 #    endif
 #  elif defined(__GNUC__)
 #    ifndef PNG_USE_RESULT
 #      define PNG_USE_RESULT __attribute__((__warn_unused_result__))
 #    endif
 #    ifndef PNG_NORETURN
 #      define PNG_NORETURN   __attribute__((__noreturn__))
 #    endif
 #    if __GNUC__ >= 3
 #      ifndef PNG_ALLOCATED
 #        define PNG_ALLOCATED  __attribute__((__malloc__))
 #      endif
 #      ifndef PNG_DEPRECATED
 #        define PNG_DEPRECATED __attribute__((__deprecated__))
 #      endif
 #      ifndef PNG_PRIVATE
 #        if 0 /* Doesn't work so we use deprecated instead*/
 #          define PNG_PRIVATE \
             __attribute__((warning("This function is not exported by libpng.")))
 #        else
 #          define PNG_PRIVATE \
             __attribute__((__deprecated__))
 #        endif
 #      endif
 #      if ((__GNUC__ > 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
 #        ifndef PNG_RESTRICT
 #          define PNG_RESTRICT __restrict
 #        endif
 #      endif /* __GNUC__.__GNUC_MINOR__ > 3.0 */
 #    endif /* __GNUC__ >= 3 */
 #  elif defined(_MSC_VER)  && (_MSC_VER >= 1300)
 #    ifndef PNG_USE_RESULT
 #      define PNG_USE_RESULT /* not supported */
 #    endif
 #    ifndef PNG_NORETURN
 #      define PNG_NORETURN   __declspec(noreturn)
 #    endif
 #    ifndef PNG_ALLOCATED
 #      if (_MSC_VER >= 1400)
 #        define PNG_ALLOCATED __declspec(restrict)
 #      endif
 #    endif
 #    ifndef PNG_DEPRECATED
 #      define PNG_DEPRECATED __declspec(deprecated)
 #    endif
 #    ifndef PNG_PRIVATE
 #      define PNG_PRIVATE __declspec(deprecated)
 #    endif
 #    ifndef PNG_RESTRICT
 #      if (_MSC_VER >= 1400)
 #        define PNG_RESTRICT __restrict
 #      endif
 #    endif
 #  elif defined(__WATCOMC__)
 #    ifndef PNG_RESTRICT
 #      define PNG_RESTRICT __restrict
 #    endif
 #  endif
 #endif /* PNG_PEDANTIC_WARNINGS */
 #ifndef PNG_DEPRECATED
 #  define PNG_DEPRECATED  /* Use of this function is deprecated */
 #endif
 #ifndef PNG_USE_RESULT
 #  define PNG_USE_RESULT  /* The result of this function must be checked */
 #endif
 #ifndef PNG_NORETURN
 #  define PNG_NORETURN    /* This function does not return */
 #endif
 #ifndef PNG_ALLOCATED
 #  define PNG_ALLOCATED   /* The result of the function is new memory */
 #endif
 #ifndef PNG_PRIVATE
 #  define PNG_PRIVATE     /* This is a private libpng function */
 #endif
 #ifndef PNG_RESTRICT
 #  define PNG_RESTRICT    /* The C99 "restrict" feature */
 #endif
 #ifndef PNG_FP_EXPORT     /* A floating point API. */
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 #     define PNG_FP_EXPORT(ordinal, type, name, args)\
          PNG_EXPORT(ordinal, type, name, args);
 #  else                   /* No floating point APIs */
 #     define PNG_FP_EXPORT(ordinal, type, name, args)
 #  endif
 #endif
 #ifndef PNG_FIXED_EXPORT  /* A fixed point API. */
 #  ifdef PNG_FIXED_POINT_SUPPORTED
 #     define PNG_FIXED_EXPORT(ordinal, type, name, args)\
          PNG_EXPORT(ordinal, type, name, args);
 #  else                   /* No fixed point APIs */
 #     define PNG_FIXED_EXPORT(ordinal, type, name, args)
 #  endif
 #endif
 #ifndef PNG_BUILDING_SYMBOL_TABLE
 /* Some typedefs to get us started.  These should be safe on most of the common
  * platforms.
  *
  * png_uint_32 and png_int_32 may, currently, be larger than required to hold a
  * 32-bit value however this is not normally advisable.
  *
  * png_uint_16 and png_int_16 should always be two bytes in size - this is
  * verified at library build time.
  *
  * png_byte must always be one byte in size.
  *
  * The checks below use constants from limits.h, as defined by the ISOC90
  * standard.
  */
 #if CHAR_BIT == 8 && UCHAR_MAX == 255
    typedef unsigned char png_byte;
 #else
 #  error "libpng requires 8 bit bytes"
 #endif
 #if INT_MIN == -32768 && INT_MAX == 32767
    typedef int png_int_16;
 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767
    typedef short png_int_16;
 #else
 #  error "libpng requires a signed 16 bit type"
 #endif
 #if UINT_MAX == 65535
    typedef unsigned int png_uint_16;
 #elif USHRT_MAX == 65535
    typedef unsigned short png_uint_16;
 #else
 #  error "libpng requires an unsigned 16 bit type"
 #endif
 #if INT_MIN < -2147483646 && INT_MAX > 2147483646
    typedef int png_int_32;
 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
    typedef long int png_int_32;
 #else
 #  error "libpng requires a signed 32 bit (or more) type"
 #endif
 #if UINT_MAX > 4294967294
    typedef unsigned int png_uint_32;
 #elif ULONG_MAX > 4294967294
    typedef unsigned long int png_uint_32;
 #else
 #  error "libpng requires an unsigned 32 bit (or more) type"
 #endif
 /* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
  * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
  */
 typedef size_t png_size_t;
 typedef ptrdiff_t png_ptrdiff_t;
 /* libpng needs to know the maximum value of 'size_t' and this controls the
  * definition of png_alloc_size_t, below.  This maximum value of size_t limits
  * but does not control the maximum allocations the library makes - there is
  * direct application control of this through png_set_user_limits().
  */
 #ifndef PNG_SMALL_SIZE_T
    /* Compiler specific tests for systems where size_t is known to be less than
     * 32 bits (some of these systems may no longer work because of the lack of
     * 'far' support; see above.)
     */
 #  if (defined(__TURBOC__) && !defined(__FLAT__)) ||\
    (defined(_MSC_VER) && defined(MAXSEG_64K))
 #     define PNG_SMALL_SIZE_T
 #  endif
 #endif
 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
  * smaller than png_uint_32.  Casts from png_size_t or png_uint_32 to
  * png_alloc_size_t are not necessary; in fact, it is recommended not to use
  * them at all so that the compiler can complain when something turns out to be
  * problematic.
  *
  * Casts in the other direction (from png_alloc_size_t to png_size_t or
  * png_uint_32) should be explicitly applied; however, we do not expect to
  * encounter practical situations that require such conversions.
  *
  * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than
  * 4294967295 - i.e. less than the maximum value of png_uint_32.
  */
 #ifdef PNG_SMALL_SIZE_T
    typedef png_uint_32 png_alloc_size_t;
 #else
    typedef png_size_t png_alloc_size_t;
 #endif
 /* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
  * implementations of Intel CPU specific support of user-mode segmented address
  * spaces, where 16-bit pointers address more than 65536 bytes of memory using
  * separate 'segment' registers.  The implementation requires two different
  * types of pointer (only one of which includes the segment value.)
  *
  * If required this support is available in version 1.2 of libpng and may be
  * available in versions through 1.5, although the correctness of the code has
  * not been verified recently.
  */
 /* Typedef for floating-point numbers that are converted to fixed-point with a
  * multiple of 100,000, e.g., gamma
  */
 typedef png_int_32 png_fixed_point;
 /* Add typedefs for pointers */
 typedef void                  * png_voidp;
 typedef const void            * png_const_voidp;
 typedef png_byte              * png_bytep;
 typedef const png_byte        * png_const_bytep;
 typedef png_uint_32           * png_uint_32p;
 typedef const png_uint_32     * png_const_uint_32p;
 typedef png_int_32            * png_int_32p;
 typedef const png_int_32      * png_const_int_32p;
 typedef png_uint_16           * png_uint_16p;
 typedef const png_uint_16     * png_const_uint_16p;
 typedef png_int_16            * png_int_16p;
 typedef const png_int_16      * png_const_int_16p;
 typedef char                  * png_charp;
 typedef const char            * png_const_charp;
 typedef png_fixed_point       * png_fixed_point_p;
 typedef const png_fixed_point * png_const_fixed_point_p;
 typedef png_size_t            * png_size_tp;
 typedef const png_size_t      * png_const_size_tp;
 #ifdef PNG_STDIO_SUPPORTED
 typedef FILE            * png_FILE_p;
 #endif
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 typedef double       * png_doublep;
 typedef const double * png_const_doublep;
 #endif
 /* Pointers to pointers; i.e. arrays */
 typedef png_byte        * * png_bytepp;
 typedef png_uint_32     * * png_uint_32pp;
 typedef png_int_32      * * png_int_32pp;
 typedef png_uint_16     * * png_uint_16pp;
 typedef png_int_16      * * png_int_16pp;
 typedef const char      * * png_const_charpp;
 typedef char            * * png_charpp;
 typedef png_fixed_point * * png_fixed_point_pp;
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 typedef double          * * png_doublepp;
 #endif
 /* Pointers to pointers to pointers; i.e., pointer to array */
 typedef char            * * * png_charppp;
 #endif /* PNG_BUILDING_SYMBOL_TABLE */
 #endif /* PNGCONF_H */

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media/libpng/pngconf.h@97036ab72558 (annotated)

media/libpng/pngconf.h