DO NOT MERGE Update libpng to 1.6.20
BUG:23265085
Change-Id: I85199805636d771f3597b691b63bc0bf46084833
(cherry picked from commit bbe98b40cda082024b669fa508931042eed18f82)
diff --git a/pngconf.h b/pngconf.h
index afc0ead..92f2500 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,9 +1,9 @@
/* pngconf.h - machine configurable file for libpng
*
- * libpng version 1.6.10 - March 6, 2014
+ * libpng version 1.6.20, December 3, 2015
*
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2015 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.)
*
@@ -11,9 +11,7 @@
* 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
+ * 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.
@@ -22,26 +20,6 @@
#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
@@ -85,7 +63,7 @@
*/
#define PNG_CONST const /* backward compatibility only */
-/* This controls optimization of the reading of 16 and 32 bit values
+/* This controls optimization of the reading of 16-bit 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
@@ -317,11 +295,11 @@
* 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)
+#ifndef PNG_EXPORTA
+# define PNG_EXPORTA(ordinal, type, name, args, attributes) \
+ PNG_FUNCTION(PNG_EXPORT_TYPE(type), (PNGAPI name), PNGARG(args), \
+ PNG_LINKAGE_API attributes)
#endif
/* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
@@ -329,7 +307,7 @@
*/
#define PNG_EMPTY /*empty list*/
-#define PNG_EXPORT(ordinal, type, name, args)\
+#define PNG_EXPORT(ordinal, type, name, args) \
PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
/* Use PNG_REMOVED to comment out a removed interface. */
@@ -361,7 +339,7 @@
* version 1.2.41. Disabling these removes the warnings but may also produce
* less efficient code.
*/
-# if defined(__clang__)
+# if defined(__clang__) && defined(__has_attribute)
/* 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__))
@@ -502,7 +480,7 @@
#if CHAR_BIT == 8 && UCHAR_MAX == 255
typedef unsigned char png_byte;
#else
-# error "libpng requires 8 bit bytes"
+# error "libpng requires 8-bit bytes"
#endif
#if INT_MIN == -32768 && INT_MAX == 32767
@@ -510,7 +488,7 @@
#elif SHRT_MIN == -32768 && SHRT_MAX == 32767
typedef short png_int_16;
#else
-# error "libpng requires a signed 16 bit type"
+# error "libpng requires a signed 16-bit type"
#endif
#if UINT_MAX == 65535
@@ -518,7 +496,7 @@
#elif USHRT_MAX == 65535
typedef unsigned short png_uint_16;
#else
-# error "libpng requires an unsigned 16 bit type"
+# error "libpng requires an unsigned 16-bit type"
#endif
#if INT_MIN < -2147483646 && INT_MAX > 2147483646
@@ -526,7 +504,7 @@
#elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
typedef long int png_int_32;
#else
-# error "libpng requires a signed 32 bit (or more) type"
+# error "libpng requires a signed 32-bit (or more) type"
#endif
#if UINT_MAX > 4294967294
@@ -534,7 +512,7 @@
#elif ULONG_MAX > 4294967294
typedef unsigned long int png_uint_32;
#else
-# error "libpng requires an unsigned 32 bit (or more) type"
+# 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,