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[master] Imported from libpng-1.6.27.tar

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Glenn Randers-Pehrson 2016-12-28 18:45:09 -06:00
parent 35cbe7640b
commit e4b59e5583
34 changed files with 157 additions and 125 deletions
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59
ANNOUNCE
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@ -1,4 +1,4 @@
Libpng 1.6.26 - October 20, 2016 Libpng 1.6.27 - December 29, 2016
This is a public release of libpng, intended for use in production codes. This is a public release of libpng, intended for use in production codes.
@ -7,53 +7,32 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a Source files with LF line endings (for Unix/Linux) and with a
"configure" script "configure" script
libpng-1.6.26.tar.xz (LZMA-compressed, recommended) libpng-1.6.27.tar.xz (LZMA-compressed, recommended)
libpng-1.6.26.tar.gz libpng-1.6.27.tar.gz
Source files with CRLF line endings (for Windows), without the Source files with CRLF line endings (for Windows), without the
"configure" script "configure" script
lpng1626.7z (LZMA-compressed, recommended) lpng1627.7z (LZMA-compressed, recommended)
lpng1626.zip lpng1627.zip
Other information: Other information:
libpng-1.6.26-README.txt libpng-1.6.27-README.txt
libpng-1.6.26-LICENSE.txt libpng-1.6.27-LICENSE.txt
libpng-1.6.26-*.asc (armored detached GPG signatures) libpng-1.6.27-*.asc (armored detached GPG signatures)
Changes since the last public release (1.6.25): Changes since the last public release (1.6.26):
Control ADLER32 checking with new PNG_IGNORE_ADLER32 option.
Fixed handling zero length IDAT in pngfix (bug report by Agostino Sarubbo, Removed the use of a macro containing the pre-processor 'defined'
bugfix by John Bowler). operator. It is unclear whether this is valid; a macro that
Do not issue a png_error() on read in png_set_pCAL() because png_handle_pCAL "generates" 'defined' is not permitted, but the use of the word
has allocated memory that libpng needs to free. "generates" within the C90 standard seems to imply more than simple
Conditionally compile png_set_benign_errors() in pngread.c and pngtest.c substitution of an expression itself containing a well-formed defined
Issue a png_benign_error instead of a png_error on ADLER32 mismatch operation.
while decoding compressed data chunks. Added ARM support to CMakeLists.txt (Andreas Franek).
Changed PNG_ZLIB_VERNUM to ZLIB_VERNUM in pngpriv.h, pngstruct.h, and Fixed a potential null pointer dereference in png_set_text_2() (bug report
pngrutil.c. and patch by Patrick Keshishian).
If CRC handling of critical chunks has been set to PNG_CRC_QUIET_USE,
ignore the ADLER32 checksum in the IDAT chunk as well as the chunk CRCs.
Issue png_benign_error() on ADLER32 checksum mismatch instead of png_error().
Add tests/badcrc.png and tests/badadler.png to tests/pngtest.
Merged pngtest.c with libpng-1.7.0beta84/pngtest.c
Updated the documentation about CRC and ADLER32 handling.
Quieted 117 warnings from clang-3.8 in pngtrans.c, pngread.c,
pngwrite.c, pngunknown.c, and pngvalid.c.
Quieted the 144 remaining -Wconversion compiler warnings by
revising the png_isaligned() macro and trivial changes in png.c,
pngerror.c, pngget.c, pngmem.c, pngset.c, pngrtran.c, pngrutil.c,
pngwtran.c, pngwrite.c, and pngwutil.c.
Quieted (bogus?) clang warnings about "absolute value has no effect"
when PNG_USE_ABS is defined.
Fixed offsets in contrib/intel/intel_sse.patch
Changed integer constant 4294967294 to unsigned 4294967294U in pngconf.h
to avoid a signed/unsigned compare in the preprocessor.
Use zlib-1.2.8.1 inflateValidate() instead of inflateReset2() to
optionally avoid ADLER32 evaluation.
Cosmetic change, "ptr != 0" to "ptr != NULL" in png.c and pngrutil.c
Despammed email addresses (replaced "@" with " at ").
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit

20
CHANGES
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@ -5754,6 +5754,26 @@ Version 1.6.26 [October 20, 2016]
Cosmetic change, "ptr != 0" to "ptr != NULL" in png.c and pngrutil.c Cosmetic change, "ptr != 0" to "ptr != NULL" in png.c and pngrutil.c
Despammed email addresses (replaced "@" with " at "). Despammed email addresses (replaced "@" with " at ").
Version 1.6.27beta01 [November 2, 2016]
Restrict the new ADLER32-skipping to IDAT chunks. It broke iCCP chunk
handling: an erroneous iCCP chunk would throw a png_error and reject the
entire PNG image instead of rejecting just the iCCP chunk with a warning,
if built with zlib-1.2.8.1.
Version 1.6.27rc01 [December 27, 2016]
Control ADLER32 checking with new PNG_IGNORE_ADLER32 option.
Removed the use of a macro containing the pre-processor 'defined'
operator. It is unclear whether this is valid; a macro that
"generates" 'defined' is not permitted, but the use of the word
"generates" within the C90 standard seems to imply more than simple
substitution of an expression itself containing a well-formed defined
operation.
Added ARM support to CMakeLists.txt (Andreas Franek).
Version 1.6.27 [December 29, 2016]
Fixed a potential null pointer dereference in png_set_text_2() (bug report
and patch by Patrick Keshishian).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement https://lists.sourceforge.net/lists/listinfo/png-mng-implement

35
CMakeLists.txt
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@ -5,6 +5,7 @@
# Revised by Roger Lowman, 2009-2010 # Revised by Roger Lowman, 2009-2010
# Revised by Clifford Yapp, 2011-2012 # Revised by Clifford Yapp, 2011-2012
# Revised by Roger Leigh, 2016 # Revised by Roger Leigh, 2016
# Revised by Andreas Franek, 2016
# This code is released under the libpng license. # This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer # For conditions of distribution and use, see the disclaimer
@ -35,7 +36,7 @@ enable_testing()
set(PNGLIB_MAJOR 1) set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6) set(PNGLIB_MINOR 6)
set(PNGLIB_RELEASE 26) set(PNGLIB_RELEASE 27)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
@ -69,6 +70,35 @@ option(PNGARG "Disable ANSI-C prototypes" OFF)
set(PNG_PREFIX "" CACHE STRING "Prefix to add to the API function names") set(PNG_PREFIX "" CACHE STRING "Prefix to add to the API function names")
set(DFA_XTRA "" CACHE FILEPATH "File containing extra configuration settings") set(DFA_XTRA "" CACHE FILEPATH "File containing extra configuration settings")
# set definitions and sources for arm
if(${CMAKE_SYSTEM_PROCESSOR} MATCHES "^arm")
set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
set(PNG_ARM_NEON "check" CACHE STRING "Enable ARM NEON optimizations:
check: (default) use internal checking code;
off: disable the optimizations;
on: turn on unconditionally.")
set_property(CACHE PNG_ARM_NEON PROPERTY STRINGS
${PNG_ARM_NEON_POSSIBLE_VALUES})
list(FIND PNG_ARM_NEON_POSSIBLE_VALUES ${PNG_ARM_NEON} index)
if(index EQUAL -1)
message(FATAL_ERROR
" PNG_ARM_NEON must be one of [${PNG_ARM_NEON_POSSIBLE_VALUES}]")
elseif(NOT ${PNG_ARM_NEON} STREQUAL "no")
set(libpng_arm_sources
arm/arm_init.c
arm/filter_neon.S
arm/filter_neon_intrinsics.c)
if(${PNG_ARM_NEON} STREQUAL "on")
add_definitions(-DPNG_ARM_NEON_OPT=2)
elseif(${PNG_ARM_NEON} STREQUAL "check")
add_definitions(-DPNG_ARM_NEON_CHECK_SUPPORTED)
endif()
else()
add_definitions(-DPNG_ARM_NEON_OPT=0)
endif()
endif()
# SET LIBNAME # SET LIBNAME
set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
@ -359,6 +389,7 @@ set(libpng_sources
pngwrite.c pngwrite.c
pngwtran.c pngwtran.c
pngwutil.c pngwutil.c
${libpng_arm_sources}
) )
set(pngtest_sources set(pngtest_sources
pngtest.c pngtest.c
@ -696,7 +727,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
# SET UP LINKS # SET UP LINKS
if(PNG_SHARED) if(PNG_SHARED)
set_target_properties(png PROPERTIES set_target_properties(png PROPERTIES
# VERSION 16.${PNGLIB_RELEASE}.1.6.26 # VERSION 16.${PNGLIB_RELEASE}.1.6.27
VERSION 16.${PNGLIB_RELEASE}.0 VERSION 16.${PNGLIB_RELEASE}.0
SOVERSION 16 SOVERSION 16
CLEAN_DIRECT_OUTPUT 1) CLEAN_DIRECT_OUTPUT 1)

4
LICENSE
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@ -10,7 +10,7 @@ this sentence.
This code is released under the libpng license. This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000 through 1.6.26, October 20, 2016 are libpng versions 1.0.7, July 1, 2000 through 1.6.27, December 29, 2016 are
Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
derived from libpng-1.0.6, and are distributed according to the same derived from libpng-1.0.6, and are distributed according to the same
disclaimer and license as libpng-1.0.6 with the following individuals disclaimer and license as libpng-1.0.6 with the following individuals
@ -127,4 +127,4 @@ any encryption software. See the EAR, paragraphs 734.3(b)(3) and
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
October 20, 2016 December 29, 2016

2
Makefile.am
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@ -1,7 +1,7 @@
# Makefile.am, the source file for Makefile.in (and hence Makefile), is # Makefile.am, the source file for Makefile.in (and hence Makefile), is
# #
# Copyright (c) 2004-2016 Glenn Randers-Pehrson # Copyright (c) 2004-2016 Glenn Randers-Pehrson
# Last changed in libpng 1.6.25 [October 20, 2016] # Last changed in libpng 1.6.25 [September 1, 2016]
# #
# This code is released under the libpng license. # This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer # For conditions of distribution and use, see the disclaimer

2
README
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@ -1,4 +1,4 @@
README for libpng version 1.6.26 - October 20, 2016 (shared library 16.0) README for libpng version 1.6.27 - December 29, 2016 (shared library 16.0)
See the note about version numbers near the top of png.h See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng. See INSTALL for instructions on how to install libpng.

3
TODO
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@ -7,7 +7,7 @@ Fix problem with C++ and EXTERN "C".
cHRM transformation. cHRM transformation.
Remove setjmp/longjmp usage in favor of returning error codes. As a start on Remove setjmp/longjmp usage in favor of returning error codes. As a start on
this, minimize the use of png_error(), replacing them with this, minimize the use of png_error(), replacing them with
png_warning(); return(0; or similar. png_warning(); return(0); or similar.
Palette creation. Palette creation.
Add "grayscale->palette" transformation and "palette->grayscale" detection. Add "grayscale->palette" transformation and "palette->grayscale" detection.
Improved dithering. Improved dithering.
@ -24,7 +24,6 @@ Use greater precision when changing to linear gamma for compositing against
background and doing rgb-to-gray transformation. background and doing rgb-to-gray transformation.
Investigate pre-incremented loop counters and other loop constructions. Investigate pre-incremented loop counters and other loop constructions.
Add interpolated method of handling interlacing. Add interpolated method of handling interlacing.
Switch to the simpler zlib (zlib/libpng) license if legally possible.
Extend pngvalid.c to validate more of the libpng transformations. Extend pngvalid.c to validate more of the libpng transformations.
*/ */

8
configure.ac
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@ -1,7 +1,7 @@
# configure.ac # configure.ac
# Copyright (c) 2004-2016 Glenn Randers-Pehrson # Copyright (c) 2004-2016 Glenn Randers-Pehrson
# Last changed in libpng 1.6.25 [October 20, 2016] # Last changed in libpng 1.6.25 [September 1, 2016]
# This code is released under the libpng license. # This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer # For conditions of distribution and use, see the disclaimer
@ -25,7 +25,7 @@ AC_PREREQ([2.68])
dnl Version number stuff here: dnl Version number stuff here:
AC_INIT([libpng],[1.6.26],[png-mng-implement@lists.sourceforge.net]) AC_INIT([libpng],[1.6.27],[png-mng-implement@lists.sourceforge.net])
AC_CONFIG_MACRO_DIR([scripts]) AC_CONFIG_MACRO_DIR([scripts])
# libpng does not follow GNU file name conventions (hence 'foreign') # libpng does not follow GNU file name conventions (hence 'foreign')
@ -46,10 +46,10 @@ dnl automake, so the following is not necessary (and is not defined anyway):
dnl AM_PREREQ([1.11.2]) dnl AM_PREREQ([1.11.2])
dnl stop configure from automagically running automake dnl stop configure from automagically running automake
PNGLIB_VERSION=1.6.26 PNGLIB_VERSION=1.6.27
PNGLIB_MAJOR=1 PNGLIB_MAJOR=1
PNGLIB_MINOR=6 PNGLIB_MINOR=6
PNGLIB_RELEASE=26 PNGLIB_RELEASE=27
dnl End of version number stuff dnl End of version number stuff

9
contrib/libtests/pngvalid.c
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@ -1,7 +1,7 @@
/* pngvalid.c - validate libpng by constructing then reading png files. /* pngvalid.c - validate libpng by constructing then reading png files.
* *
* Last changed in libpng 1.6.26 [October 20, 2016] * Last changed in libpng 1.6.27 [December 29, 2016]
* Copyright (c) 2014-2016 John Cunningham Bowler * Copyright (c) 2014-2016 John Cunningham Bowler
* *
* This code is released under the libpng license. * This code is released under the libpng license.
@ -4010,8 +4010,11 @@ check_interlace_type(int const interlace_type)
# define do_own_interlace 1 # define do_own_interlace 1
#endif /* WRITE_INTERLACING tests */ #endif /* WRITE_INTERLACING tests */
#define CAN_WRITE_INTERLACE\ #if PNG_LIBPNG_VER >= 10700 || defined PNG_WRITE_INTERLACING_SUPPORTED
PNG_LIBPNG_VER >= 10700 || defined PNG_WRITE_INTERLACING_SUPPORTED # define CAN_WRITE_INTERLACE 1
#else
# define CAN_WRITE_INTERLACE 0
#endif
/* Do the same thing for read interlacing; this controls whether read tests do /* Do the same thing for read interlacing; this controls whether read tests do
* their own de-interlace or use libpng. * their own de-interlace or use libpng.

6
libpng-manual.txt
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@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.26 - October 20, 2016 libpng version 1.6.27 - December 29, 2016
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net> <glennrp at users.sourceforge.net>
Copyright (c) 1998-2016 Glenn Randers-Pehrson Copyright (c) 1998-2016 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on: Based on:
libpng versions 0.97, January 1998, through 1.6.26 - October 20, 2016 libpng versions 0.97, January 1998, through 1.6.27 - December 29, 2016
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2016 Glenn Randers-Pehrson Copyright (c) 1998-2016 Glenn Randers-Pehrson
@ -5355,7 +5355,7 @@ Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.26 are Y2K compliant. It is my belief that earlier upward through 1.6.27 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer Libpng only has two year fields. One is a 2-byte unsigned integer

18
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "October 20, 2016" .TH LIBPNG 3 "December 29, 2016"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.26 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.27
.SH SYNOPSIS .SH SYNOPSIS
\fB \fB
#include <png.h>\fP #include <png.h>\fP
@ -510,7 +510,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT .SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.26 - October 20, 2016 libpng version 1.6.27 - December 29, 2016
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net> <glennrp at users.sourceforge.net>
Copyright (c) 1998-2016 Glenn Randers-Pehrson Copyright (c) 1998-2016 Glenn Randers-Pehrson
@ -521,7 +521,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on: Based on:
libpng versions 0.97, January 1998, through 1.6.26 - October 20, 2016 libpng versions 0.97, January 1998, through 1.6.27 - December 29, 2016
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2016 Glenn Randers-Pehrson Copyright (c) 1998-2016 Glenn Randers-Pehrson
@ -5865,7 +5865,7 @@ Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.26 are Y2K compliant. It is my belief that earlier upward through 1.6.27 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer Libpng only has two year fields. One is a 2-byte unsigned integer
@ -5967,7 +5967,7 @@ the first widely used release:
... ...
1.5.27 15 10527 15.so.15.27[.0] 1.5.27 15 10527 15.so.15.27[.0]
... ...
1.6.26 16 10626 16.so.16.26[.0] 1.6.27 16 10627 16.so.16.27[.0]
Henceforth the source version will match the shared-library minor Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be and patch numbers; the shared-library major version number will be
@ -6023,7 +6023,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation. Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.6.26 - October 20, 2016: Libpng version 1.6.27 - December 29, 2016:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc. Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net). Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -6048,7 +6048,7 @@ this sentence.
This code is released under the libpng license. This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000 through 1.6.26, October 20, 2016 are libpng versions 1.0.7, July 1, 2000 through 1.6.27, December 29, 2016 are
Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
derived from libpng-1.0.6, and are distributed according to the same derived from libpng-1.0.6, and are distributed according to the same
disclaimer and license as libpng-1.0.6 with the following individuals disclaimer and license as libpng-1.0.6 with the following individuals
@ -6173,7 +6173,7 @@ files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
October 20, 2016 December 29, 2016
.\" end of man page .\" end of man page

4
libpngpf.3
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@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "October 20, 2016" .TH LIBPNGPF 3 "December 29, 2016"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.26 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.27
(private functions) (private functions)
.SH SYNOPSIS .SH SYNOPSIS
\fB#include \fI"pngpriv.h" \fB#include \fI"pngpriv.h"

2
mips/filter_msa_intrinsics.c
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@ -3,7 +3,7 @@
* *
* Copyright (c) 2016 Glenn Randers-Pehrson * Copyright (c) 2016 Glenn Randers-Pehrson
* Written by Mandar Sahastrabuddhe, August 2016. * Written by Mandar Sahastrabuddhe, August 2016.
* Last changed in libpng 1.6.25 [October 20, 2016] * Last changed in libpng 1.6.25 [September 1, 2016]
* *
* This code is released under the libpng license. * This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer * For conditions of distribution and use, see the disclaimer

2
mips/mips_init.c
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@ -3,7 +3,7 @@
* *
* Copyright (c) 2016 Glenn Randers-Pehrson * Copyright (c) 2016 Glenn Randers-Pehrson
* Written by Mandar Sahastrabuddhe, 2016. * Written by Mandar Sahastrabuddhe, 2016.
* Last changed in libpng 1.6.25 [October 20, 2016] * Last changed in libpng 1.6.25 [September 1, 2016]
* *
* This code is released under the libpng license. * This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer * For conditions of distribution and use, see the disclaimer

2
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "October 20, 2016" .TH PNG 5 "December 29, 2016"
.SH NAME .SH NAME
png \- Portable Network Graphics (PNG) format png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION .SH DESCRIPTION

9
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions /* png.c - location for general purpose libpng functions
* *
* Last changed in libpng 1.6.26 [October 20, 2016] * Last changed in libpng 1.6.27 [December 29, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -14,7 +14,7 @@
#include "pngpriv.h" #include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_26 Your_png_h_is_not_version_1_6_26; typedef png_libpng_version_1_6_27 Your_png_h_is_not_version_1_6_27;
/* Tells libpng that we have already handled the first "num_bytes" bytes /* Tells libpng that we have already handled the first "num_bytes" bytes
* of the PNG file signature. If the PNG data is embedded into another * of the PNG file signature. If the PNG data is embedded into another
@ -477,6 +477,7 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
png_free(png_ptr, info_ptr->text); png_free(png_ptr, info_ptr->text);
info_ptr->text = NULL; info_ptr->text = NULL;
info_ptr->num_text = 0; info_ptr->num_text = 0;
info_ptr->max_text = 0;
} }
} }
#endif #endif
@ -775,14 +776,14 @@ png_get_copyright(png_const_structrp png_ptr)
#else #else
# ifdef __STDC__ # ifdef __STDC__
return PNG_STRING_NEWLINE \ return PNG_STRING_NEWLINE \
"libpng version 1.6.26 - October 20, 2016" PNG_STRING_NEWLINE \ "libpng version 1.6.27 - December 29, 2016" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson" \ "Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \ PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE; PNG_STRING_NEWLINE;
# else # else
return "libpng version 1.6.26 - October 20, 2016\ return "libpng version 1.6.27 - December 29, 2016\
Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson\ Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\ Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."; Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";

25
png.h
View File

@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.6.26, October 20, 2016 * libpng version 1.6.27, December 29, 2016
* *
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,7 +12,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger * libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.26, October 20, 2016: * libpng versions 0.97, January 1998, through 1.6.27, December 29, 2016:
* Glenn Randers-Pehrson. * Glenn Randers-Pehrson.
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
*/ */
@ -29,7 +29,7 @@
* files that are distributed with libpng have other copyright owners and * files that are distributed with libpng have other copyright owners and
* are released under other open source licenses. * are released under other open source licenses.
* *
* libpng versions 1.0.7, July 1, 2000 through 1.6.26, October 20, 2016 are * libpng versions 1.0.7, July 1, 2000 through 1.6.27, December 29, 2016 are
* Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are * Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
* derived from libpng-1.0.6, and are distributed according to the same * derived from libpng-1.0.6, and are distributed according to the same
* disclaimer and license as libpng-1.0.6 with the following individuals * disclaimer and license as libpng-1.0.6 with the following individuals
@ -218,7 +218,7 @@
* ... * ...
* 1.5.27 15 10527 15.so.15.27[.0] * 1.5.27 15 10527 15.so.15.27[.0]
* ... * ...
* 1.6.26 16 10626 16.so.16.26[.0] * 1.6.27 16 10627 16.so.16.27[.0]
* *
* Henceforth the source version will match the shared-library major * Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be * and minor numbers; the shared-library major version number will be
@ -246,13 +246,13 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* October 20, 2016 * December 29, 2016
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
* *
* This is your unofficial assurance that libpng from version 0.71 and * This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.6.26 are Y2K compliant. It is my belief that * upward through 1.6.27 are Y2K compliant. It is my belief that
* earlier versions were also Y2K compliant. * earlier versions were also Y2K compliant.
* *
* Libpng only has two year fields. One is a 2-byte unsigned integer * Libpng only has two year fields. One is a 2-byte unsigned integer
@ -314,8 +314,8 @@
*/ */
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.26" #define PNG_LIBPNG_VER_STRING "1.6.27"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.26 - October 20, 2016\n" #define PNG_HEADER_VERSION_STRING " libpng version 1.6.27 - December 29, 2016\n"
#define PNG_LIBPNG_VER_SONUM 16 #define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16 #define PNG_LIBPNG_VER_DLLNUM 16
@ -323,7 +323,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1 #define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6 #define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 26 #define PNG_LIBPNG_VER_RELEASE 27
/* This should match the numeric part of the final component of /* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: * PNG_LIBPNG_VER_STRING, omitting any leading zero:
@ -354,7 +354,7 @@
* version 1.0.0 was mis-numbered 100 instead of 10000). From * version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
*/ */
#define PNG_LIBPNG_VER 10626 /* 1.6.26 */ #define PNG_LIBPNG_VER 10627 /* 1.6.27 */
/* Library configuration: these options cannot be changed after /* Library configuration: these options cannot be changed after
* the library has been built. * the library has been built.
@ -464,7 +464,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h /* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number. * do not agree upon the version number.
*/ */
typedef char* png_libpng_version_1_6_26; typedef char* png_libpng_version_1_6_27;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info. /* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
* *
@ -3230,7 +3230,8 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
#ifdef PNG_MIPS_MSA_API_SUPPORTED #ifdef PNG_MIPS_MSA_API_SUPPORTED
# define PNG_MIPS_MSA 6 /* HARDWARE: MIPS Msa SIMD instructions supported */ # define PNG_MIPS_MSA 6 /* HARDWARE: MIPS Msa SIMD instructions supported */
#endif #endif
#define PNG_OPTION_NEXT 8 /* Next option - numbers must be even */ #define PNG_IGNORE_ADLER32 8
#define PNG_OPTION_NEXT 10 /* Next option - numbers must be even */
/* Return values: NOTE: there are four values and 'off' is *not* zero */ /* Return values: NOTE: there are four values and 'off' is *not* zero */
#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */ #define PNG_OPTION_UNSET 0 /* Unset - defaults to off */

2
pngconf.h
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@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng version 1.6.26, October 20, 2016 * libpng version 1.6.27, December 29, 2016
* *
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

23
pngrutil.c
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@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file /* pngrutil.c - utilities to read a PNG file
* *
* Last changed in libpng 1.6.26 [October 20, 2016] * Last changed in libpng 1.6.27 [December 29, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -418,9 +418,10 @@ png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
} }
#if ZLIB_VERNUM >= 0x1281 #if ZLIB_VERNUM >= 0x1281 && \
/* Turn off validation of the ADLER32 checksum */ defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_IGNORE_ADLER32)
if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0) if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON)
/* Turn off validation of the ADLER32 checksum in IDAT chunks */
ret = inflateValidate(&png_ptr->zstream, 0); ret = inflateValidate(&png_ptr->zstream, 0);
#endif #endif
@ -716,7 +717,7 @@ png_decompress_chunk(png_structrp png_ptr,
* the extra space may otherwise be used as a Trojan Horse. * the extra space may otherwise be used as a Trojan Horse.
*/ */
if (ret == Z_STREAM_END && if (ret == Z_STREAM_END &&
chunklength - prefix_size != lzsize) chunklength - prefix_size != lzsize)
png_chunk_benign_error(png_ptr, "extra compressed data"); png_chunk_benign_error(png_ptr, "extra compressed data");
} }
@ -826,7 +827,7 @@ png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
return Z_STREAM_ERROR; return Z_STREAM_ERROR;
} }
} }
#endif #endif /* READ_iCCP */
/* Read and check the IDHR chunk */ /* Read and check the IDHR chunk */
@ -4107,15 +4108,7 @@ png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
png_zstream_error(png_ptr, ret); png_zstream_error(png_ptr, ret);
if (output != NULL) if (output != NULL)
{ png_chunk_error(png_ptr, png_ptr->zstream.msg);
if(!strncmp(png_ptr->zstream.msg,"incorrect data check",20))
{
png_chunk_benign_error(png_ptr, "ADLER32 checksum mismatch");
continue;
}
else
png_chunk_error(png_ptr, png_ptr->zstream.msg);
}
else /* checking */ else /* checking */
{ {

9
pngtest.c
View File

@ -986,9 +986,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
/* Allow application (pngtest) errors and warnings to pass */ /* Allow application (pngtest) errors and warnings to pass */
png_set_benign_errors(read_ptr, 1); png_set_benign_errors(read_ptr, 1);
/* Turn off CRC and ADLER32 checking while reading */ /* Turn off CRC checking while reading */
png_set_crc_action(read_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE); png_set_crc_action(read_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE);
#ifdef PNG_IGNORE_ADLER32
/* Turn off ADLER32 checking while reading */
png_set_option(read_ptr, PNG_IGNORE_ADLER32, PNG_OPTION_ON);
#endif
# ifdef PNG_WRITE_SUPPORTED # ifdef PNG_WRITE_SUPPORTED
png_set_benign_errors(write_ptr, 1); png_set_benign_errors(write_ptr, 1);
# endif # endif
@ -2083,4 +2088,4 @@ main(void)
#endif #endif
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_26 Your_png_h_is_not_version_1_6_26; typedef png_libpng_version_1_6_27 Your_png_h_is_not_version_1_6_27;

2
projects/vstudio/README.txt
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@ -1,7 +1,7 @@
VisualStudio instructions VisualStudio instructions
libpng version 1.6.26 - October 20, 2016 libpng version 1.6.27 - December 29, 2016
Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson

2
projects/vstudio/zlib.props
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@ -2,7 +2,7 @@
<!-- <!--
* zlib.props - location of zlib source * zlib.props - location of zlib source
* *
* libpng version 1.6.26 - October 20, 2016 * libpng version 1.6.27 - December 29, 2016
* *
* Copyright (c) 1998-2011 Glenn Randers-Pehrson * Copyright (c) 1998-2011 Glenn Randers-Pehrson
* *

10
scripts/README.txt
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@ -1,9 +1,9 @@
Makefiles for libpng version 1.6.26 - October 20, 2016 Makefiles for libpng version 1.6.27 - December 29, 2016
pnglibconf.h.prebuilt => Stores configuration settings pnglibconf.h.prebuilt => Stores configuration settings
makefile.linux => Linux/ELF makefile makefile.linux => Linux/ELF makefile
(gcc, creates libpng16.so.16.1.6.26) (gcc, creates libpng16.so.16.1.6.27)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from ansi2knr (Requires ansi2knr.c from
@ -33,12 +33,12 @@ pnglibconf.h.prebuilt => Stores configuration settings
makefile.os2 => OS/2 Makefile (gcc and emx, requires libpng.def) makefile.os2 => OS/2 Makefile (gcc and emx, requires libpng.def)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.sggcc => Silicon Graphics (gcc, makefile.sggcc => Silicon Graphics (gcc,
creates libpng16.so.16.1.6.26) creates libpng16.so.16.1.6.27)
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.solaris => Solaris 2.X makefile (gcc, makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng16.so.16.1.6.26) creates libpng16.so.16.1.6.27)
makefile.so9 => Solaris 9 makefile (gcc, makefile.so9 => Solaris 9 makefile (gcc,
creates libpng16.so.16.1.6.26) creates libpng16.so.16.1.6.27)
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.32sunu => Sun Ultra 32-bit makefile makefile.32sunu => Sun Ultra 32-bit makefile

2
scripts/def.c
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@ -21,7 +21,7 @@ PNG_DFN "OS2 DESCRIPTION "PNG image compression library""
PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE" PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE"
PNG_DFN "" PNG_DFN ""
PNG_DFN "EXPORTS" PNG_DFN "EXPORTS"
PNG_DFN ";Version 1.6.26" PNG_DFN ";Version 1.6.27"
#define PNG_EXPORTA(ordinal, type, name, args, attributes)\ #define PNG_EXPORTA(ordinal, type, name, args, attributes)\
PNG_DFN "@" SYMBOL_PREFIX "@@" name "@" PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"

2
scripts/libpng-config-head.in
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@ -11,7 +11,7 @@
# Modeled after libxml-config. # Modeled after libxml-config.
version=1.6.26 version=1.6.27
prefix="" prefix=""
libdir="" libdir=""
libs="" libs=""

2
scripts/libpng.pc.in
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@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
Name: libpng Name: libpng
Description: Loads and saves PNG files Description: Loads and saves PNG files
Version: 1.6.26 Version: 1.6.27
Libs: -L${libdir} -lpng16 Libs: -L${libdir} -lpng16
Cflags: -I${includedir} Cflags: -I${includedir}

2
scripts/makefile.cegcc
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@ -23,7 +23,7 @@
VERMAJ = 1 VERMAJ = 1
VERMIN = 6 VERMIN = 6
VERMIC = 26 VERMIC = 27
VER = $(VERMAJ).$(VERMIN).$(VERMIC) VER = $(VERMAJ).$(VERMIN).$(VERMIC)
NAME = libpng NAME = libpng
PACKAGE = $(NAME)-$(VER) PACKAGE = $(NAME)-$(VER)

2
scripts/makefile.linux
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@ -10,7 +10,7 @@
# Library name: # Library name:
LIBNAME = libpng16 LIBNAME = libpng16
PNGMAJ = 16 PNGMAJ = 16
RELEASE = 26 RELEASE = 27
# Shared library names: # Shared library names:
LIBSO=$(LIBNAME).so LIBSO=$(LIBNAME).so

2
scripts/makefile.msys
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@ -18,7 +18,7 @@ exec_prefix=$(prefix)
# Library name: # Library name:
LIBNAME = libpng16 LIBNAME = libpng16
PNGMAJ = 16 PNGMAJ = 16
RELEASE = 26 RELEASE = 27
# Shared library names: # Shared library names:
LIBSO=$(LIBNAME).dll LIBSO=$(LIBNAME).dll

2
scripts/makefile.ne12bsd
View File

@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng16
LIB= png16 LIB= png16
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.6.26 SHLIB_MINOR= 1.6.27
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.netbsd
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@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
LIB= png LIB= png
SHLIB_MAJOR= 16 SHLIB_MAJOR= 16
SHLIB_MINOR= 1.6.26 SHLIB_MINOR= 1.6.27
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.openbsd
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@ -11,7 +11,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 16 SHLIB_MAJOR= 16
SHLIB_MINOR= 1.6.26 SHLIB_MINOR= 1.6.27
LIB= png LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \ SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \

4
scripts/pnglibconf.h.prebuilt
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@ -1,8 +1,8 @@
/* libpng 1.6.26 STANDARD API DEFINITION */ /* libpng 1.6.27 STANDARD API DEFINITION */
/* pnglibconf.h - library build configuration */ /* pnglibconf.h - library build configuration */
/* Libpng version 1.6.26 - October 20, 2016 */ /* Libpng version 1.6.27 - December 29, 2016 */
/* Copyright (c) 1998-2015 Glenn Randers-Pehrson */ /* Copyright (c) 1998-2015 Glenn Randers-Pehrson */

2
scripts/symbols.def
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@ -1,4 +1,4 @@
;Version 1.6.26 ;Version 1.6.27
;-------------------------------------------------------------- ;--------------------------------------------------------------
; LIBPNG symbol list as a Win32 DEF file ; LIBPNG symbol list as a Win32 DEF file
; Contains all the symbols that can be exported from libpng ; Contains all the symbols that can be exported from libpng