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[master] Imported from libpng-1.6.24.tar

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Glenn Randers-Pehrson 2016-08-03 21:16:26 -05:00
parent 5a8b04137f
commit 0c29ab2b31
67 changed files with 4131 additions and 1252 deletions
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90
ANNOUNCE
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@ -1,4 +1,4 @@
Libpng 1.6.23 - June 9, 2016
Libpng 1.6.24 - August 4, 2016
This is a public release of libpng, intended for use in production codes.
@ -7,38 +7,78 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
libpng-1.6.23.tar.xz (LZMA-compressed, recommended)
libpng-1.6.23.tar.gz
libpng-1.6.24.tar.xz (LZMA-compressed, recommended)
libpng-1.6.24.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng1623.7z (LZMA-compressed, recommended)
lpng1623.zip
lpng1624.7z (LZMA-compressed, recommended)
lpng1624.zip
Other information:
libpng-1.6.23-README.txt
libpng-1.6.23-LICENSE.txt
libpng-1.6.23-*.asc (armored detached GPG signatures)
libpng-1.6.24-README.txt
libpng-1.6.24-LICENSE.txt
libpng-1.6.24-*.asc (armored detached GPG signatures)
Changes since the last public release (1.6.22):
Stop a potential memory leak in png_set_tRNS() (Bug report by Ted Ying).
Fixed the progressive reader to handle empty first IDAT chunk properly
(patch by Timothy Nikkel). This bug was introduced in libpng-1.6.0 and
only affected the libpng16 branch.
Added tests in pngvalid.c to check zero-length IDAT chunks in various
positions. Fixed the sequential reader to handle these more robustly
(John Bowler).
Corrected progressive read input buffer in pngvalid.c. The previous version
the code invariably passed just one byte at a time to libpng. The intent
was to pass a random number of bytes in the range 0..511.
Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch.
Added missing ")" in pngerror.c (Matt Sarrett).
Fixed undefined behavior in png_push_save_buffer(). Do not call
memcpy() with a null source, even if count is zero (Leon Scroggins III).
Fixed bad link to RFC2083 in png.5 (Nikola Forro).
Changes since the last public release (1.6.23):
Avoid potential overflow of the PNG_IMAGE_SIZE macro. This macro
is not used within libpng, but is used in some of the examples.
Correct filter heuristic overflow handling. This was broken when the
write filter code was moved out-of-line; if there is a single filter and
the heuristic sum overflows the calculation of the filtered line is not
completed. In versions prior to 1.6 the code was duplicated in-line
and the check not performed, so the filter operation completed; however,
in the multi-filter case where the sum is performed the 'none' filter would
be selected if all the sums overflowed, even if it wasn't in the filter
list. The fix to the first problem is simply to provide PNG_SIZE_MAX as
the current lmins sum value; this means the sum can never exceed it and
overflows silently. A reasonable compiler that does choose to inline
the code will simply eliminate the sum check.
The fix to the second problem is to use high precision arithmetic (this is
implemented in 1.7), however a simple safe fix here is to chose the lowest
numbered filter in the list from png_set_filter (this only works if the
first problem is also fixed) (John Bowler).
Use a more efficient absolute value calculation on SSE2 (Matthieu Darbois).
Fixed the case where PNG_IMAGE_BUFFER_SIZE can overflow in the application
as a result of the application using an increased 'row_stride'; previously
png_image_finish_read only checked for overflow on the base calculation of
components. (I.e. it checked for overflow of a 32-bit number on the total
number of pixel components in the output format, not the possibly padded row
length and not the number of bytes, which for linear formats is twice the
number of components.)
MSVC does not like '-(unsigned)', so replaced it with 0U-(unsigned)
MSVC does not like (uInt) = -(unsigned) (i.e. as an initializer), unless
the conversion is explicitly invoked by a cast.
Put the SKIP definition in the correct place. It needs to come after the
png.h include (see all the other .c files in contrib/libtests) because it
depends on PNG_LIBPNG_VER.
Removed the three compile warning options from the individual project
files into the zlib.props globals. It increases the warning level from 4
to All and adds a list of the warnings that need to be turned off. This is
semi-documentary; the intent is to tell libpng users which warnings have
been examined and judged non-fixable at present. The warning about
structure padding is fixable, but it would be a signficant change (moving
structure members around).
Optimized absolute value calculation in filter selection, similar to
code in the PAETH decoder in pngrutil.c. Build with PNG_USE_ABS to
use this.
Added pngcp to the build together with a pngcp.dfa configuration test.
Added high resolution timing to pngcp.
Added "Common linking failures" section to INSTALL.
Relocated misplaced #endif in png.c sRGB profile checking.
Fixed two Coverity issues in pngcp.c.
Avoid filter-selection heuristic sum calculations in cases where only one
filter is a candidate for selection. This trades off code size (added
private png_setup_*_row_only() functions) for speed.
Fixed some indentation to comply with our coding style.
Added contrib/tools/reindent.
Eliminated unnecessary tests of boolean png_isaligned() vs 0.
Conditionally compile SSE2 headers in contrib/intel/intel_sse.patch
Conditionally compile png_decompress_chunk().
Conditionally compile ARM_NEON headers in pngpriv.h
Updated contrib/intel/intel_sse.patch
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

79
CHANGES
View File

@ -5596,6 +5596,85 @@ Version 1.6.23rc02 [June 4, 2016]
Version 1.6.23 [June 9, 2016]
Fixed bad link to RFC2083 in png.5 (Nikola Forro).
Version 1.6.24beta01 [June 11, 2016]
Avoid potential overflow of the PNG_IMAGE_SIZE macro. This macro
is not used within libpng, but is used in some of the examples.
Version 1.6.24beta02 [June 23, 2016]
Correct filter heuristic overflow handling. This was broken when the
write filter code was moved out-of-line; if there is a single filter and
the heuristic sum overflows the calculation of the filtered line is not
completed. In versions prior to 1.6 the code was duplicated in-line
and the check not performed, so the filter operation completed; however,
in the multi-filter case where the sum is performed the 'none' filter would
be selected if all the sums overflowed, even if it wasn't in the filter
list. The fix to the first problem is simply to provide PNG_SIZE_MAX as
the current lmins sum value; this means the sum can never exceed it and
overflows silently. A reasonable compiler that does choose to inline
the code will simply eliminate the sum check.
The fix to the second problem is to use high precision arithmetic (this is
implemented in 1.7), however a simple safe fix here is to chose the lowest
numbered filter in the list from png_set_filter (this only works if the
first problem is also fixed) (John Bowler).
Use a more efficient absolute value calculation on SSE2 (Matthieu Darbois).
Fixed the case where PNG_IMAGE_BUFFER_SIZE can overflow in the application
as a result of the application using an increased 'row_stride'; previously
png_image_finish_read only checked for overflow on the base calculation of
components. (I.e. it checked for overflow of a 32-bit number on the total
number of pixel components in the output format, not the possibly padded row
length and not the number of bytes, which for linear formats is twice the
number of components.)
MSVC does not like '-(unsigned)', so replaced it with 0U-(unsigned)
MSVC does not like (uInt) = -(unsigned) (i.e. as an initializer), unless
the conversion is explicitly invoked by a cast.
Put the SKIP definition in the correct place. It needs to come after the
png.h include (see all the other .c files in contrib/libtests) because it
depends on PNG_LIBPNG_VER.
Removed the three compile warning options from the individual project
files into the zlib.props globals. It increases the warning level from 4
to All and adds a list of the warnings that need to be turned off. This is
semi-documentary; the intent is to tell libpng users which warnings have
been examined and judged non-fixable at present. The warning about
structure padding is fixable, but it would be a signficant change (moving
structure members around).
Version 1.6.24beta03 [July 4, 2016]
Optimized absolute value calculation in filter selection, similar to
code in the PAETH decoder in pngrutil.c. Build with PNG_USE_ABS to
use this.
Added pngcp to the build together with a pngcp.dfa configuration test.
Added high resolution timing to pngcp.
Added "Common linking failures" section to INSTALL.
Relocated misplaced #endif in png.c sRGB profile checking.
Fixed two Coverity issues in pngcp.c.
Version 1.6.24beta04 [July 8, 2016]
Avoid filter-selection heuristic sum calculations in cases where only one
filter is a candidate for selection. This trades off code size (added
private png_setup_*_row_only() functions) for speed.
Version 1.6.24beta05 [July 13, 2016]
Fixed some indentation to comply with our coding style.
Added contrib/tools/reindent.
Version 1.6.24beta06 [July 18, 2016]
Fixed more indentation to comply with our coding style.
Eliminated unnecessary tests of boolean png_isaligned() vs 0.
Version 1.6.24rc01 [July 25, 2016]
No changes.
Version 1.6.24rc02 [August 1, 2016]
Conditionally compile SSE2 headers in contrib/intel/intel_sse.patch
Conditionally compile png_decompress_chunk().
Version 1.6.24rc03 [August 2, 2016]
Conditionally compile ARM_NEON headers in pngpriv.h
Updated contrib/intel/intel_sse.patch
Version 1.6.24[August 4, 2016]
No changes.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

4
CMakeLists.txt
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@ -35,7 +35,7 @@ enable_testing()
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6)
set(PNGLIB_RELEASE 23)
set(PNGLIB_RELEASE 24)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
@ -696,7 +696,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
# SET UP LINKS
if(PNG_SHARED)
set_target_properties(png PROPERTIES
# VERSION 16.${PNGLIB_RELEASE}.1.6.23
# VERSION 16.${PNGLIB_RELEASE}.1.6.24
VERSION 16.${PNGLIB_RELEASE}.0
SOVERSION 16
CLEAN_DIRECT_OUTPUT 1)

43
INSTALL
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@ -18,7 +18,8 @@ VIII. Configuring libpng for 16-bit platforms
XIII. Removing unwanted object code
XIV. Changes to the build and configuration of libpng in libpng-1.5.x
XV. Setjmp/longjmp issues
XVI. Other sources of information about libpng
XVI. Common linking failures
XVII. Other sources of information about libpng
I. Simple installation
@ -78,7 +79,7 @@ Or you can use one of the "projects" in the "projects" directory.
Before installing libpng, you must first install zlib, if it
is not already on your system. zlib can usually be found
wherever you got libpng; otherwise go to http://zlib.net. You can place
zlib in in the same directory as libpng or in another directory.
zlib in the same directory as libpng or in another directory.
If your system already has a preinstalled zlib you will still need
to have access to the zlib.h and zconf.h include files that
@ -118,8 +119,8 @@ or "zlib128") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
.. (the parent directory)
libpng (this directory)
.. (the parent directory)
libpng (this directory)
INSTALL (this file)
README
*.h, *.c => libpng source files
@ -382,28 +383,20 @@ This requires setjmp/longjmp, so you must either build the library
with PNG_SETJMP_SUPPORTED defined, or with PNG_SIMPLIFIED_READ_SUPPORTED
and PNG_SIMPLIFIED_WRITE_SUPPORTED undefined.
XVI. Other sources of information about libpng:
XVI. Common linking failures
If your application fails to find libpng or zlib entries while linking:
Be sure "-lz" appears after "-lpng" on your linking command.
Be sure you have built libpng, zlib, and your application for the
same platform (e.g., 32-bit or 64-bit).
If you are using the vstudio project, observe the WARNING in
project/vstudio/README.txt.
XVII. Other sources of information about libpng:
Further information can be found in the README and libpng-manual.txt
files, in the individual makefiles, in png.h, and the manual pages
libpng.3 and png.5.
Using the ./configure script -- 16 December 2002.
=================================================
The ./configure script should work compatibly with what scripts/makefile.*
did, however there are some options you might need to add to configure
explicitly, which previously was done semi-automatically (if you didn't edit
scripts/makefile.* yourself, that is)
CFLAGS="-Wall -O -funroll-loops \
-malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
--with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
You can alternatively specify --includedir=/usr/include, /usr/local/include,
/usr/include/libpng16, or whatever.
If you find that the configure script is out-of-date or is not supporting
your platform properly, try running autogen.sh to regenerate "configure",
"Makefile.in", and the other configuration files. Then try configure again.

4
LICENSE
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@ -10,7 +10,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000 through 1.6.23, June 9, 2016 are
libpng versions 1.0.7, July 1, 2000 through 1.6.24, August 4, 2016 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
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
glennrp at users.sourceforge.net
June 9, 2016
August 4, 2016

6
Makefile.am
View File

@ -18,7 +18,7 @@ check_PROGRAMS += timepng
endif
# Utilities - installed
bin_PROGRAMS= pngfix png-fix-itxt
bin_PROGRAMS= pngcp pngfix png-fix-itxt
# This ensures that pnglibconf.h gets built at the start of 'make all' or
# 'make check', but it does not add dependencies to the individual programs,
@ -53,6 +53,9 @@ pngfix_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
png_fix_itxt_SOURCES = contrib/tools/png-fix-itxt.c
pngcp_SOURCES = contrib/tools/pngcp.c
pngcp_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
# Generally these are single line shell scripts to run a test with a particular
# set of parameters:
TESTS =\
@ -230,6 +233,7 @@ contrib/libtests/timepng.o: pnglibconf.h
contrib/tools/makesRGB.o: pnglibconf.h
contrib/tools/pngfix.o: pnglibconf.h
contrib/tools/pngcp.o: pnglibconf.h
# We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
# be built with PNG_USE_READ_MACROS; this prevents the read macros from

2
README
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@ -1,4 +1,4 @@
README for libpng version 1.6.23 - June 9, 2016 (shared library 16.0)
README for libpng version 1.6.24 - August 4, 2016 (shared library 16.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.

1
TODO
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@ -11,7 +11,6 @@ Add "grayscale->palette" transformation and "palette->grayscale" detection.
Improved dithering.
Multi-lingual error and warning message support.
Complete sRGB transformation (presently it simply uses gamma=0.45455).
Make profile checking optional via a png_set_something() call.
Man pages for function calls.
Better documentation.
Better filter selection

2
arm/arm_init.c
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@ -3,7 +3,7 @@
*
* Copyright (c) 2014,2016 Glenn Randers-Pehrson
* Written by Mans Rullgard, 2011.
* Last changed in libpng 1.6.22 [June 9, 2016]
* Last changed in libpng 1.6.22 [May 26, 2016]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer

2
arm/filter_neon_intrinsics.c
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@ -5,7 +5,7 @@
* Written by James Yu <james.yu at linaro.org>, October 2013.
* Based on filter_neon.S, written by Mans Rullgard, 2011.
*
* Last changed in libpng 1.6.22 [June 9, 2016]
* Last changed in libpng 1.6.22 [May 26, 2016]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer

12
configure.ac
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@ -1,7 +1,7 @@
# configure.ac
# Copyright (c) 2004-2015 Glenn Randers-Pehrson
# Last changed in libpng 1.6.22 [June 9, 2016]
# Last changed in libpng 1.6.22 [May 26, 2016]
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
@ -25,7 +25,7 @@ AC_PREREQ([2.68])
dnl Version number stuff here:
AC_INIT([libpng],[1.6.23],[png-mng-implement@lists.sourceforge.net])
AC_INIT([libpng],[1.6.24],[png-mng-implement@lists.sourceforge.net])
AC_CONFIG_MACRO_DIR([scripts])
# libpng does not follow GNU file name conventions (hence 'foreign')
@ -36,7 +36,7 @@ AC_CONFIG_MACRO_DIR([scripts])
# 1.13 is required for parallel tests
AM_INIT_AUTOMAKE([1.13 foreign dist-xz color-tests silent-rules subdir-objects])
# The following line causes --disable-maintainer-mode to be the default to
# configure, this is necessary because libpng distributions cannot rely on the
# configure. This is necessary because libpng distributions cannot rely on the
# time stamps of the autotools generated files being correct
AM_MAINTAINER_MODE
@ -46,10 +46,10 @@ dnl automake, so the following is not necessary (and is not defined anyway):
dnl AM_PREREQ([1.11.2])
dnl stop configure from automagically running automake
PNGLIB_VERSION=1.6.23
PNGLIB_VERSION=1.6.24
PNGLIB_MAJOR=1
PNGLIB_MINOR=6
PNGLIB_RELEASE=23
PNGLIB_RELEASE=24
dnl End of version number stuff
@ -67,7 +67,7 @@ AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
dnl libtool/libtoolize; version 2.4.2 is the tested version, this or any
dnl libtool/libtoolize; version 2.4.2 is the tested version. This or any
dnl compatible later version may be used
LT_INIT([win32-dll])
LT_PREREQ([2.4.2])

57
contrib/conftest/pngcp.dfa Normal file
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@ -0,0 +1,57 @@
# pngcp.dfa
# Build time configuration of libpng
#
# Author: John Bowler
# Copyright: (c) John Bowler, 2016
# Usage rights:
# To the extent possible under law, the author has waived all copyright and
# related or neighboring rights to this work. This work is published from:
# United States.
#
# Build libpng with support for pngcp. This means just png_read_png,
# png_write_png and small number of configuration settings.
#
everything = off
# This option is specific to this configuration; it adds a #define to the
# generated pnglibconf.h which turns on the (not portable) timing option for
# pngcp. Note that any option is automatically preceded by PNG_; there is no
# way round this and this is deliberate.
option PNGCP_TIMING
# Because of the everything off above the option must also be turned on. This
# may not be done in one step because it is safer and avoids mis-spelled options
# in user .dfa files to error out if an unrecognized option is turned on.
option PNGCP_TIMING on
# Options to turn on png_read_png and png_write_png:
option INFO_IMAGE on
option SEQUENTIAL_READ on
option EASY_ACCESS on
option WRITE on
option WRITE_16BIT on
option WRITE_FILTER on
# pngcp needs this to preserve unknown chunks, switching all these on means that
# pngcp can work without explicit known chunk reading suppport
option UNKNOWN_CHUNKS on
option SET_UNKNOWN_CHUNKS on
option HANDLE_AS_UNKNOWN on
option SAVE_UNKNOWN_CHUNKS on
option WRITE_UNKNOWN_CHUNKS on
# pngcp needs this to handle palette files with invalid indices:
option CHECK_FOR_INVALID_INDEX on
option GET_PALETTE_MAX on
# Pre-libpng 1.7 pngcp has to stash text chunks manually, post 1.7 without this
# text chunks should be handled as unknown ok.
option TEXT on
# this is used to turn off limits:
option USER_LIMITS on
option SET_USER_LIMITS on
# these are are just required for specific customizations
option WRITE_CUSTOMIZE_ZTXT_COMPRESSION on
option WRITE_CUSTOMIZE_COMPRESSION on

4
contrib/intel/filter_sse2_intrinsics.c
View File

@ -6,7 +6,7 @@
* Derived from arm/filter_neon_intrinsics.c, which was
* Copyright (c) 2014,2016 Glenn Randers-Pehrson
*
* Last changed in libpng 1.6.22 [May 26, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@ -208,7 +208,7 @@ static __m128i abs_i16(__m128i x) {
x = _mm_xor_si128(x, is_negative);
/* +1 to negative lanes, else +0. */
x = _mm_add_epi16(x, _mm_srli_epi16(is_negative, 15));
x = _mm_sub_epi16(x, is_negative);
return x;
#endif
}

24
contrib/intel/intel_sse.patch
View File

@ -55,7 +55,7 @@ diff --git a/configure.ac b/configure.ac
diff --git a/Makefile.am b/Makefile.am
--- a/Makefile.am 2016-05-17 18:15:12.000000000 -0400
+++ b/Makefile.am 2016-05-25 19:48:10.631751170 -0400
@@ -89,16 +89,20 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SO
@@ -92,16 +92,20 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SO
pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa
@ -77,8 +77,8 @@ diff --git a/Makefile.am b/Makefile.am
# Versioned symbols and restricted exports
if HAVE_SOLARIS_LD
diff --git a/pngpriv.h b/pngpriv.h
--- a/pngpriv.h 2016-05-31 09:20:34.442885047 -0500
+++ b/pngpriv.h 2016-05-31 09:14:54.583492341 -0500
--- a/pngpriv.h 2016-08-01 18:13:38.770128810 -0500
+++ b/pngpriv.h 2016-08-01 18:50:19.130179017 -0500
@@ -177,16 +177,52 @@
# endif /* !PNG_ARM_NEON_IMPLEMENTATION */
@ -132,7 +132,7 @@ diff --git a/pngpriv.h b/pngpriv.h
* PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a
* static library of libpng then link the DLL against that.
*/
@@ -1184,16 +1220,29 @@ PNG_INTERNAL_FUNCTION(void,png_read_filt
@@ -1185,16 +1221,31 @@ PNG_INTERNAL_FUNCTION(void,png_read_filt
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_neon,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
@ -140,7 +140,9 @@ diff --git a/pngpriv.h b/pngpriv.h
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
+
+#if PNG_INTEL_SSE_IMPLEMENTATION > 0
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_sse2,(png_row_infop
@ -153,7 +155,8 @@ diff --git a/pngpriv.h b/pngpriv.h
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_sse2,(png_row_infop
+ row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
+
+#endif
/* Choose the best filter to use and filter the row data */
PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
png_row_infop row_info),PNG_EMPTY);
@ -161,18 +164,19 @@ diff --git a/pngpriv.h b/pngpriv.h
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_read_IDAT_data,(png_structrp png_ptr,
png_bytep output, png_alloc_size_t avail_out),PNG_EMPTY);
/* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer
@@ -1910,16 +1959,18 @@ PNG_INTERNAL_FUNCTION(void, PNG_FILTER_O
/* Just declare the optimization that will be used */
#else
@@ -1914,16 +1965,20 @@ PNG_INTERNAL_FUNCTION(void, PNG_FILTER_O
/* List *all* the possible optimizations here - this branch is required if
* the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in
* CFLAGS in place of CPPFLAGS *and* uses symbol prefixing.
*/
# if PNG_ARM_NEON_OPT > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
# endif
+# if PNG_INTEL_SSE_IMPLEMENTATION > 0
+PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_sse2,
+ (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
+# endif
#endif
PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr,

44
contrib/libtests/pngimage.c
View File

@ -2,7 +2,7 @@
*
* Copyright (c) 2015,2016 John Cunningham Bowler
*
* Last changed in libpng 1.6.22 [May 26, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@ -45,8 +45,19 @@
# define SKIP 0
#endif
#if defined(PNG_INFO_IMAGE_SUPPORTED) && defined(PNG_SEQUENTIAL_READ_SUPPORTED)\
&& (defined(PNG_READ_PNG_SUPPORTED) || PNG_LIBPNG_VER < 10700)
#if PNG_LIBPNG_VER < 10700
/* READ_PNG and WRITE_PNG were not defined, so: */
# ifdef PNG_INFO_IMAGE_SUPPORTED
# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
# define PNG_READ_PNG_SUPPORTED
# endif /* SEQUENTIAL_READ */
# ifdef PNG_WRITE_SUPPORTED
# define PNG_WRITE_PNG_SUPPORTED
# endif /* WRITE */
# endif /* INFO_IMAGE */
#endif /* pre 1.7.0 */
#ifdef PNG_READ_PNG_SUPPORTED
/* If a transform is valid on both read and write this implies that if the
* transform is applied to read it must also be applied on write to produce
* meaningful data. This is because these transforms when performed on read
@ -395,7 +406,7 @@ buffer_destroy(struct buffer *buffer)
buffer_destroy_list(list);
}
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_WRITE_PNG_SUPPORTED
static void
buffer_start_write(struct buffer *buffer)
{
@ -565,7 +576,7 @@ struct display
png_structp read_pp;
png_infop read_ip;
# ifdef PNG_WRITE_SUPPORTED
# ifdef PNG_WRITE_PNG_SUPPORTED
/* Used to write a new image (the original info_ptr is used) */
png_structp write_pp;
struct buffer written_file; /* where the file gets written */
@ -592,7 +603,7 @@ display_init(struct display *dp)
dp->read_ip = NULL;
buffer_init(&dp->original_file);
# ifdef PNG_WRITE_SUPPORTED
# ifdef PNG_WRITE_PNG_SUPPORTED
dp->write_pp = NULL;
buffer_init(&dp->written_file);
# endif
@ -605,7 +616,7 @@ display_clean_read(struct display *dp)
png_destroy_read_struct(&dp->read_pp, &dp->read_ip, NULL);
}
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_WRITE_PNG_SUPPORTED
static void
display_clean_write(struct display *dp)
{
@ -617,7 +628,7 @@ display_clean_write(struct display *dp)
static void
display_clean(struct display *dp)
{
# ifdef PNG_WRITE_SUPPORTED
# ifdef PNG_WRITE_PNG_SUPPORTED
display_clean_write(dp);
# endif
display_clean_read(dp);
@ -635,7 +646,7 @@ static void
display_destroy(struct display *dp)
{
/* Release any memory held in the display. */
# ifdef PNG_WRITE_SUPPORTED
# ifdef PNG_WRITE_PNG_SUPPORTED
buffer_destroy(&dp->written_file);
# endif
@ -1082,6 +1093,7 @@ compare_read(struct display *dp, int applied_transforms)
}
else
# ifdef PNG_sBIT_SUPPORTED
{
unsigned long y;
int bpp; /* bits-per-pixel then bytes-per-pixel */
@ -1243,12 +1255,16 @@ compare_read(struct display *dp, int applied_transforms)
}
} /* for y */
}
# else /* !sBIT */
display_log(dp, INTERNAL_ERROR,
"active shift transform but no sBIT support");
# endif /* !sBIT */
}
return 1; /* compare succeeded */
}
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_WRITE_PNG_SUPPORTED
static void
buffer_write(struct display *dp, struct buffer *buffer, png_bytep data,
png_size_t size)
@ -1347,7 +1363,7 @@ write_png(struct display *dp, png_infop ip, int transforms)
*/
display_clean_write(dp);
}
#endif /* WRITE_SUPPORTED */
#endif /* WRITE_PNG */
static int
skip_transform(struct display *dp, int tr)
@ -1409,7 +1425,7 @@ test_one_file(struct display *dp, const char *filename)
return; /* no point testing more */
}
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_WRITE_PNG_SUPPORTED
/* Second test: write the original PNG data out to a new file (to test the
* write side) then read the result back in and make sure that it hasn't
* changed.
@ -1450,7 +1466,7 @@ test_one_file(struct display *dp, const char *filename)
* out and read it back in again (without the reversible transforms)
* we should get back to the place where we started.
*/
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_WRITE_PNG_SUPPORTED
if ((current & write_transforms) == current)
{
/* All transforms reversible: write the PNG with the transformations
@ -1686,7 +1702,7 @@ main(const int argc, const char * const * const argv)
return errors != 0;
}
}
#else /* !INFO_IMAGE || !SEQUENTIAL_READ || !READ_PNG*/
#else /* !READ_PNG */
int
main(void)
{

20
contrib/libtests/pngstest.c
View File

@ -3,7 +3,7 @@
*
* Copyright (c) 2013-2016 John Cunningham Bowler
*
* Last changed in libpng 1.6.22 [May 26, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@ -26,15 +26,6 @@
# include <config.h>
#endif
/* 1.6.1 added support for the configure test harness, which uses 77 to indicate
* a skipped test, in earlier versions we need to succeed on a skipped test, so:
*/
#if PNG_LIBPNG_VER >= 10601 && defined(HAVE_CONFIG_H)
# define SKIP 77
#else
# define SKIP 0
#endif
/* Define the following to use this test against your installed libpng, rather
* than the one being built here:
*/
@ -44,6 +35,15 @@
# include "../../png.h"
#endif
/* 1.6.1 added support for the configure test harness, which uses 77 to indicate
* a skipped test, in earlier versions we need to succeed on a skipped test, so:
*/
#if PNG_LIBPNG_VER >= 10601 && defined(HAVE_CONFIG_H)
# define SKIP 77
#else
# define SKIP 0
#endif
#ifdef PNG_SIMPLIFIED_READ_SUPPORTED /* Else nothing can be done */
#include "../tools/sRGB.h"

6
contrib/libtests/pngvalid.c
View File

@ -1,7 +1,7 @@
/* pngvalid.c - validate libpng by constructing then reading png files.
*
* Last changed in libpng 1.6.23 [June 9, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 2014-2016 Glenn Randers-Pehrson
* Written by John Cunningham Bowler
*
@ -1115,7 +1115,7 @@ store_warning(png_structp ppIn, png_const_charp message)
if (!ps->expect_warning)
store_log(ps, pp, message, 0 /* warning */);
else
ps->saw_warning = 1;
ps->saw_warning = 1;
}
/* These somewhat odd functions are used when reading an image to ensure that
@ -1589,7 +1589,7 @@ store_read_chunk(png_store *ps, png_bytep pb, const png_size_t max,
{
if (chunkpos < chunklen-4U)
{
uInt avail = -1;
uInt avail = (uInt)-1;
if (avail > (IDAT_len-4U) - IDAT_pos)
avail = (uInt)/*SAFE*/((IDAT_len-4U) - IDAT_pos);

7
contrib/tools/chkfmt
View File

@ -1,4 +1,11 @@
#!/bin/sh
# chkfmt
#
# COPYRIGHT: Written by John Cunningham Bowler, 2010.
# To the extent possible under law, the author has waived all copyright and
# related or neighboring rights to this work. This work is published from:
# United States.
#
# Check the format of the source files in the current directory - checks for a
# line length of 80 characters max and no tab characters.

2453
contrib/tools/pngcp.c Normal file
View File

File diff suppressed because it is too large Load Diff

25
contrib/tools/reindent Executable file
View File

@ -0,0 +1,25 @@
#!/bin/sh
# reindent a libpng C source
# COPYRIGHT: Written by Glenn Randers-Pehrson, 2016.
# To the extent possible under law, the author has waived all copyright and
# related or neighboring rights to this work. This work is published from:
# United States.
# Usage:
# reindent inputtabsize outputtabsize inputcontinuestring outputcontinuestring
#
# Assumes that continued lines begin with indentation plus one space, and
# that continued comments begin with indentation plus " *".
#
# eg, to change libpng coding style from 3-space indentation with 4-space
# continuations to 4-space indentation with 2-space continuations:
#
# reindent 3 4 "\t " " " < example.c > example.c_4_2
# and to restore the file back to libpng coding style
# reindent 4 3 " " " " < example.c_4_2 > example.c_3_4
unexpand --first-only --t $1 | \
sed -e "/^ *$3[^\*]/{s/$3/$4/}" | \
expand -t $2

46
example.c
View File

@ -2,8 +2,8 @@
#if 0 /* in case someone actually tries to compile this */
/* example.c - an example of using libpng
* Last changed in libpng 1.6.15 [November 20, 2014]
* Maintained 1998-2014 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Maintained 1998-2016 Glenn Randers-Pehrson
* Maintained 1996, 1997 Andreas Dilger)
* Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
* To the extent possible under law, the authors have waived
@ -97,7 +97,7 @@ int main(int argc, const char **argv)
*/
if (buffer != NULL &&
png_image_finish_read(&image, NULL/*background*/, buffer,
0/*row_stride*/, NULL/*colormap*/) != 0)
0/*row_stride*/, NULL/*colormap*/) != 0)
{
/* Now write the image out to the second argument. In the write
* call 'convert_to_8bit' allows 16-bit data to be squashed down to
@ -105,7 +105,7 @@ int main(int argc, const char **argv)
* to the 8-bit format.
*/
if (png_image_write_to_file(&image, argv[2], 0/*convert_to_8bit*/,
buffer, 0/*row_stride*/, NULL/*colormap*/) != 0)
buffer, 0/*row_stride*/, NULL/*colormap*/) != 0)
{
/* The image has been written successfully. */
exit(0);
@ -295,7 +295,7 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
* was compiled with a compatible version of the library. REQUIRED
*/
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
png_voidp user_error_ptr, user_error_fn, user_warning_fn);
png_voidp user_error_ptr, user_error_fn, user_warning_fn);
if (png_ptr == NULL)
{
@ -375,7 +375,7 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
* low byte.
*/
#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
png_set_scale_16(png_ptr);
png_set_scale_16(png_ptr);
#else
png_set_strip_16(png_ptr);
#endif
@ -419,10 +419,10 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
if (png_get_bKGD(png_ptr, info_ptr, &image_background) != 0)
png_set_background(png_ptr, image_background,
PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
else
png_set_background(png_ptr, &my_background,
PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
/* Some suggestions as to how to get a screen gamma value
*
@ -481,7 +481,7 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
png_color std_color_cube[MAX_SCREEN_COLORS];
png_set_quantize(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
MAX_SCREEN_COLORS, NULL, 0);
MAX_SCREEN_COLORS, NULL, 0);
}
/* This reduces the image to the palette supplied in the file */
else if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette) != 0)
@ -491,7 +491,7 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
png_get_hIST(png_ptr, info_ptr, &histogram);
png_set_quantize(png_ptr, palette, num_palette,
max_screen_colors, histogram, 0);
max_screen_colors, histogram, 0);
}
}
#endif /* READ_QUANTIZE */
@ -530,7 +530,7 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
* see the png_read_row() method below:
*/
number_passes = png_set_interlace_handling(png_ptr);
#else
#else /* !READ_INTERLACING */
number_passes = 1;
#endif /* READ_INTERLACING */
@ -552,7 +552,7 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
for (row = 0; row < height; row++)
row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
info_ptr));
info_ptr));
/* Now it's time to read the image. One of these methods is REQUIRED */
#ifdef entire /* Read the entire image in one go */
@ -574,10 +574,10 @@ void read_png(FILE *fp, int sig_read) /* File is already open */
{
#ifdef sparkle /* Read the image using the "sparkle" effect. */
png_read_rows(png_ptr, &row_pointers[y], NULL,
number_of_rows);
number_of_rows);
#else no_sparkle /* Read the image using the "rectangle" effect */
png_read_rows(png_ptr, NULL, &row_pointers[y],
number_of_rows);
number_of_rows);
#endif no_sparkle /* Use only one of these two methods */
}
@ -614,7 +614,7 @@ initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
* linked libraries.
*/
*png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
png_voidp user_error_ptr, user_error_fn, user_warning_fn);
png_voidp user_error_ptr, user_error_fn, user_warning_fn);
if (*png_ptr == NULL)
{
@ -649,14 +649,14 @@ initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
* the function png_get_progressive_ptr(png_ptr).
*/
png_set_progressive_read_fn(*png_ptr, (void *)stream_data,
info_callback, row_callback, end_callback);
info_callback, row_callback, end_callback);
return (OK);
}
int
process_data(png_structp *png_ptr, png_infop *info_ptr,
png_bytep buffer, png_uint_32 length)
png_bytep buffer, png_uint_32 length)
{
if (setjmp(png_jmpbuf((*png_ptr))))
{
@ -691,7 +691,7 @@ info_callback(png_structp png_ptr, png_infop info)
}
row_callback(png_structp png_ptr, png_bytep new_row,
png_uint_32 row_num, int pass)
png_uint_32 row_num, int pass)
{
/*
* This function is called for every row in the image. If the
@ -780,7 +780,7 @@ void write_png(char *file_name /* , ... other image information ... */)
* in case we are using dynamically linked libraries. REQUIRED.
*/
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
png_voidp user_error_ptr, user_error_fn, user_warning_fn);
png_voidp user_error_ptr, user_error_fn, user_warning_fn);
if (png_ptr == NULL)
{
@ -819,7 +819,7 @@ void write_png(char *file_name /* , ... other image information ... */)
* png_init_io() here you would call
*/
png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
user_IO_flush_function);
user_IO_flush_function);
/* where user_io_ptr is a structure you want available to the callbacks */
#endif no_streams /* Only use one initialization method */
@ -842,7 +842,7 @@ void write_png(char *file_name /* , ... other image information ... */)
* currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE. REQUIRED
*/
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???,
PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
/* Set the palette if there is one. REQUIRED for indexed-color images */
palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
@ -988,11 +988,11 @@ void write_png(char *file_name /* , ... other image information ... */)
png_bytep row_pointers[height];
if (height > PNG_UINT_32_MAX/(sizeof (png_bytep)))
png_error (png_ptr, "Image is too tall to process in memory");
png_error (png_ptr, "Image is too tall to process in memory");
/* Set up pointers into your "image" byte array */
for (k = 0; k < height; k++)
row_pointers[k] = image + k*width*bytes_per_pixel;
row_pointers[k] = image + k*width*bytes_per_pixel;
/* One of the following output methods is REQUIRED */

15
libpng-manual.txt
View File

@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.23 - June 9, 2016
libpng version 1.6.24 - August 4, 2016
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
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:
libpng versions 0.97, January 1998, through 1.6.23 - June 9, 2016
libpng versions 0.97, January 1998, through 1.6.24 - August 4, 2016
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2016 Glenn Randers-Pehrson
@ -559,7 +559,7 @@ non-interlaced case the row that was just handled is simply one less than the
passed in row number, and pass will always be 0. For the interlaced case the
same applies unless the row value is 0, in which case the row just handled was
the last one from one of the preceding passes. Because interlacing may skip a
pass you cannot be sure that the preceding pass is just 'pass-1', if you really
pass you cannot be sure that the preceding pass is just 'pass-1'; if you really
need to know what the last pass is record (row,pass) from the callback and use
the last recorded value each time.
@ -2230,7 +2230,8 @@ is exactly the same. If you are planning on displaying the image
after each pass, the "rectangle" effect is generally considered the
better looking one.
If you only want the "sparkle" effect, just call png_read_rows() as
If you only want the "sparkle" effect, just call png_read_row() or
png_read_rows() as
normal, with the third parameter NULL. Make sure you make pass over
the image number_of_passes times, and you don't change the data in the
rows between calls. You can change the locations of the data, just
@ -2239,6 +2240,8 @@ pass, and assumes the data from previous passes is still valid.
png_read_rows(png_ptr, row_pointers, NULL,
number_of_rows);
or
png_read_row(png_ptr, row_pointers, NULL);
If you only want the first effect (the rectangles), do the same as
before except pass the row buffer in the third parameter, and leave
@ -2246,6 +2249,8 @@ the second parameter NULL.
png_read_rows(png_ptr, NULL, row_pointers,
number_of_rows);
or
png_read_row(png_ptr, NULL, row_pointers);
If you don't want libpng to handle the interlacing details, just call
png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
@ -5345,7 +5350,7 @@ Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.23 are Y2K compliant. It is my belief that earlier
upward through 1.6.24 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer

27
libpng.3
View File

@ -1,6 +1,6 @@
.TH LIBPNG 3 "June 9, 2016"
.TH LIBPNG 3 "August 4, 2016"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.23
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.24
.SH SYNOPSIS
\fB
#include <png.h>\fP
@ -510,7 +510,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.23 - June 9, 2016
libpng version 1.6.24 - August 4, 2016
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
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:
libpng versions 0.97, January 1998, through 1.6.23 - June 9, 2016
libpng versions 0.97, January 1998, through 1.6.24 - August 4, 2016
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2016 Glenn Randers-Pehrson
@ -1069,7 +1069,7 @@ non-interlaced case the row that was just handled is simply one less than the
passed in row number, and pass will always be 0. For the interlaced case the
same applies unless the row value is 0, in which case the row just handled was
the last one from one of the preceding passes. Because interlacing may skip a
pass you cannot be sure that the preceding pass is just 'pass\-1', if you really
pass you cannot be sure that the preceding pass is just 'pass\-1'; if you really
need to know what the last pass is record (row,pass) from the callback and use
the last recorded value each time.
@ -2740,7 +2740,8 @@ is exactly the same. If you are planning on displaying the image
after each pass, the "rectangle" effect is generally considered the
better looking one.
If you only want the "sparkle" effect, just call png_read_rows() as
If you only want the "sparkle" effect, just call png_read_row() or
png_read_rows() as
normal, with the third parameter NULL. Make sure you make pass over
the image number_of_passes times, and you don't change the data in the
rows between calls. You can change the locations of the data, just
@ -2749,6 +2750,8 @@ pass, and assumes the data from previous passes is still valid.
png_read_rows(png_ptr, row_pointers, NULL,
number_of_rows);
or
png_read_row(png_ptr, row_pointers, NULL);
If you only want the first effect (the rectangles), do the same as
before except pass the row buffer in the third parameter, and leave
@ -2756,6 +2759,8 @@ the second parameter NULL.
png_read_rows(png_ptr, NULL, row_pointers,
number_of_rows);
or
png_read_row(png_ptr, NULL, row_pointers);
If you don't want libpng to handle the interlacing details, just call
png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
@ -5855,7 +5860,7 @@ Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.23 are Y2K compliant. It is my belief that earlier
upward through 1.6.24 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer
@ -5957,7 +5962,7 @@ the first widely used release:
...
1.5.27 15 10527 15.so.15.27[.0]
...
1.6.23 16 10623 16.so.16.23[.0]
1.6.24 16 10624 16.so.16.24[.0]
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@ -6013,7 +6018,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.6.23 - June 9, 2016:
Libpng version 1.6.24 - August 4, 2016:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -6038,7 +6043,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000 through 1.6.23, June 9, 2016 are
libpng versions 1.0.7, July 1, 2000 through 1.6.24, August 4, 2016 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
disclaimer and license as libpng-1.0.6 with the following individuals
@ -6163,7 +6168,7 @@ files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
June 9, 2016
August 4, 2016
.\" end of man page

4
libpngpf.3
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "June 9, 2016"
.TH LIBPNGPF 3 "August 4, 2016"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.23
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.24
(private functions)
.SH SYNOPSIS
\fB#include \fI"pngpriv.h"

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "June 9, 2016"
.TH PNG 5 "August 4, 2016"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

424
png.c
View File

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.6.19 [November 12, 2015]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2015 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.)
@ -14,7 +14,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_23 Your_png_h_is_not_version_1_6_23;
typedef png_libpng_version_1_6_24 Your_png_h_is_not_version_1_6_24;
/* 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
@ -85,7 +85,7 @@ png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED)
if (items >= (~(png_alloc_size_t)0)/size)
{
png_warning (png_voidcast(png_structrp, png_ptr),
"Potential overflow in png_zalloc()");
"Potential overflow in png_zalloc()");
return NULL;
}
@ -172,10 +172,10 @@ png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length)
int
png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver)
{
/* Libpng versions 1.0.0 and later are binary compatible if the version
* string matches through the second '.'; we must recompile any
* applications that use any older library version.
*/
/* Libpng versions 1.0.0 and later are binary compatible if the version
* string matches through the second '.'; we must recompile any
* applications that use any older library version.
*/
if (user_png_ver != NULL)
{
@ -297,7 +297,7 @@ png_create_png_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
if (png_user_version_check(&create_struct, user_png_ver) != 0)
{
png_structrp png_ptr = png_voidcast(png_structrp,
png_malloc_warn(&create_struct, (sizeof *png_ptr)));
png_malloc_warn(&create_struct, (sizeof *png_ptr)));
if (png_ptr != NULL)
{
@ -346,7 +346,7 @@ png_create_info_struct,(png_const_structrp png_ptr),PNG_ALLOCATED)
* has always been done in 'example.c'.
*/
info_ptr = png_voidcast(png_inforp, png_malloc_base(png_ptr,
(sizeof *info_ptr)));
(sizeof *info_ptr)));
if (info_ptr != NULL)
memset(info_ptr, 0, (sizeof *info_ptr));
@ -402,7 +402,7 @@ png_destroy_info_struct(png_const_structrp png_ptr, png_infopp info_ptr_ptr)
*/
PNG_FUNCTION(void,PNGAPI
png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
PNG_DEPRECATED)
PNG_DEPRECATED)
{
png_inforp info_ptr = *ptr_ptr;
@ -417,7 +417,7 @@ png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
/* The following line is why this API should not be used: */
free(info_ptr);
info_ptr = png_voidcast(png_inforp, png_malloc_base(NULL,
(sizeof *info_ptr)));
(sizeof *info_ptr)));
if (info_ptr == NULL)
return;
*ptr_ptr = info_ptr;
@ -430,7 +430,7 @@ png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
/* The following API is not called internally */
void PNGAPI
png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr,
int freer, png_uint_32 mask)
int freer, png_uint_32 mask)
{
png_debug(1, "in png_data_freer");
@ -449,7 +449,7 @@ png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr,
void PNGAPI
png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
int num)
int num)
{
png_debug(1, "in png_free_data");
@ -775,14 +775,14 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.6.23 - June 9, 2016" PNG_STRING_NEWLINE \
"libpng version 1.6.24 - August 4, 2016" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2016 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;
# else
return "libpng version 1.6.23 - June 9, 2016\
return "libpng version 1.6.24 - August 4, 2016\
Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@ -1033,7 +1033,7 @@ png_zstream_error(png_structrp png_ptr, int ret)
#ifdef PNG_GAMMA_SUPPORTED /* always set if COLORSPACE */
static int
png_colorspace_check_gamma(png_const_structrp png_ptr,
png_colorspacerp colorspace, png_fixed_point gAMA, int from)
png_colorspacerp colorspace, png_fixed_point gAMA, int from)
/* This is called to check a new gamma value against an existing one. The
* routine returns false if the new gamma value should not be written.
*
@ -1047,7 +1047,7 @@ png_colorspace_check_gamma(png_const_structrp png_ptr,
png_fixed_point gtest;
if ((colorspace->flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
(png_muldiv(&gtest, colorspace->gamma, PNG_FP_1, gAMA) == 0 ||
(png_muldiv(&gtest, colorspace->gamma, PNG_FP_1, gAMA) == 0 ||
png_gamma_significant(gtest) != 0))
{
/* Either this is an sRGB image, in which case the calculated gamma
@ -1059,7 +1059,7 @@ png_colorspace_check_gamma(png_const_structrp png_ptr,
if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0 || from == 2)
{
png_chunk_report(png_ptr, "gamma value does not match sRGB",
PNG_CHUNK_ERROR);
PNG_CHUNK_ERROR);
/* Do not overwrite an sRGB value */
return from == 2;
}
@ -1067,7 +1067,7 @@ png_colorspace_check_gamma(png_const_structrp png_ptr,
else /* sRGB tag not involved */
{
png_chunk_report(png_ptr, "gamma value does not match libpng estimate",
PNG_CHUNK_WARNING);
PNG_CHUNK_WARNING);
return from == 1;
}
}
@ -1077,7 +1077,7 @@ png_colorspace_check_gamma(png_const_structrp png_ptr,
void /* PRIVATE */
png_colorspace_set_gamma(png_const_structrp png_ptr,
png_colorspacerp colorspace, png_fixed_point gAMA)
png_colorspacerp colorspace, png_fixed_point gAMA)
{
/* Changed in libpng-1.5.4 to limit the values to ensure overflow can't
* occur. Since the fixed point representation is asymetrical it is
@ -1635,8 +1635,8 @@ static const png_xy sRGB_xy = /* From ITU-R BT.709-3 */
static int
png_colorspace_set_xy_and_XYZ(png_const_structrp png_ptr,
png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ,
int preferred)
png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ,
int preferred)
{
if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0)
return 0;
@ -1683,7 +1683,7 @@ png_colorspace_set_xy_and_XYZ(png_const_structrp png_ptr,
int /* PRIVATE */
png_colorspace_set_chromaticities(png_const_structrp png_ptr,
png_colorspacerp colorspace, const png_xy *xy, int preferred)
png_colorspacerp colorspace, const png_xy *xy, int preferred)
{
/* We must check the end points to ensure they are reasonable - in the past
* color management systems have crashed as a result of getting bogus
@ -1697,7 +1697,7 @@ png_colorspace_set_chromaticities(png_const_structrp png_ptr,
{
case 0: /* success */
return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, xy, &XYZ,
preferred);
preferred);
case 1:
/* We can't invert the chromaticities so we can't produce value XYZ
@ -1720,7 +1720,7 @@ png_colorspace_set_chromaticities(png_const_structrp png_ptr,
int /* PRIVATE */
png_colorspace_set_endpoints(png_const_structrp png_ptr,
png_colorspacerp colorspace, const png_XYZ *XYZ_in, int preferred)
png_colorspacerp colorspace, const png_XYZ *XYZ_in, int preferred)
{
png_XYZ XYZ = *XYZ_in;
png_xy xy;
@ -1729,7 +1729,7 @@ png_colorspace_set_endpoints(png_const_structrp png_ptr,
{
case 0:
return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, &xy, &XYZ,
preferred);
preferred);
case 1:
/* End points are invalid. */
@ -1786,7 +1786,7 @@ is_ICC_signature(png_alloc_size_t it)
static int
png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_alloc_size_t value, png_const_charp reason)
png_const_charp name, png_alloc_size_t value, png_const_charp reason)
{
size_t pos;
char message[196]; /* see below for calculation */
@ -1811,8 +1811,8 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
pos = png_safecat(message, (sizeof message), pos,
png_format_number(number, number+(sizeof number),
PNG_NUMBER_FORMAT_x, value));
png_format_number(number, number+(sizeof number),
PNG_NUMBER_FORMAT_x, value));
pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/
}
# endif
@ -1826,7 +1826,7 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
* application errors the PNG won't be written.)
*/
png_chunk_report(png_ptr, message,
(colorspace != NULL) ? PNG_CHUNK_ERROR : PNG_CHUNK_WRITE_ERROR);
(colorspace != NULL) ? PNG_CHUNK_ERROR : PNG_CHUNK_WRITE_ERROR);
return 0;
}
@ -1835,7 +1835,7 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
#ifdef PNG_sRGB_SUPPORTED
int /* PRIVATE */
png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
int intent)
int intent)
{
/* sRGB sets known gamma, end points and (from the chunk) intent. */
/* IMPORTANT: these are not necessarily the values found in an ICC profile
@ -1872,10 +1872,10 @@ png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
*/
if (intent < 0 || intent >= PNG_sRGB_INTENT_LAST)
return png_icc_profile_error(png_ptr, colorspace, "sRGB",
(unsigned)intent, "invalid sRGB rendering intent");
(unsigned)intent, "invalid sRGB rendering intent");
if ((colorspace->flags & PNG_COLORSPACE_HAVE_INTENT) != 0 &&
colorspace->rendering_intent != intent)
colorspace->rendering_intent != intent)
return png_icc_profile_error(png_ptr, colorspace, "sRGB",
(unsigned)intent, "inconsistent rendering intents");
@ -1889,8 +1889,8 @@ png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
* warn but overwrite the value with the correct one.
*/
if ((colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0 &&
!png_colorspace_endpoints_match(&sRGB_xy, &colorspace->end_points_xy,
100))
!png_colorspace_endpoints_match(&sRGB_xy, &colorspace->end_points_xy,
100))
png_chunk_report(png_ptr, "cHRM chunk does not match sRGB",
PNG_CHUNK_ERROR);
@ -1898,7 +1898,7 @@ png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
* returns true when the 'from' argument corresponds to sRGB (2).
*/
(void)png_colorspace_check_gamma(png_ptr, colorspace, PNG_GAMMA_sRGB_INVERSE,
2/*from sRGB*/);
2/*from sRGB*/);
/* intent: bugs in GCC force 'int' to be used as the parameter type. */
colorspace->rendering_intent = (png_uint_16)intent;
@ -1933,19 +1933,19 @@ static const png_byte D50_nCIEXYZ[12] =
int /* PRIVATE */
png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_uint_32 profile_length)
png_const_charp name, png_uint_32 profile_length)
{
if (profile_length < 132)
return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
"too short");
"too short");
return 1;
}
int /* PRIVATE */
png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_uint_32 profile_length,
png_const_bytep profile/* first 132 bytes only */, int color_type)
png_const_charp name, png_uint_32 profile_length,
png_const_bytep profile/* first 132 bytes only */, int color_type)
{
png_uint_32 temp;
@ -1957,18 +1957,18 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile);
if (temp != profile_length)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"length does not match profile");
"length does not match profile");
temp = (png_uint_32) (*(profile+8));
if (temp > 3 && (profile_length & 3))
return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
"invalid length");
"invalid length");
temp = png_get_uint_32(profile+128); /* tag count: 12 bytes/tag */
if (temp > 357913930 || /* (2^32-4-132)/12: maximum possible tag count */
profile_length < 132+12*temp) /* truncated tag table */
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"tag count too large");
"tag count too large");
/* The 'intent' must be valid or we can't store it, ICC limits the intent to
* 16 bits.
@ -1976,14 +1976,14 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+64);
if (temp >= 0xffff) /* The ICC limit */
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid rendering intent");
"invalid rendering intent");
/* This is just a warning because the profile may be valid in future
* versions.
*/
if (temp >= PNG_sRGB_INTENT_LAST)
(void)png_icc_profile_error(png_ptr, NULL, name, temp,
"intent outside defined range");
"intent outside defined range");
/* At this point the tag table can't be checked because it hasn't necessarily
* been loaded; however, various header fields can be checked. These checks
@ -2000,7 +2000,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
temp = png_get_uint_32(profile+36); /* signature 'ascp' */
if (temp != 0x61637370)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid signature");
"invalid signature");
/* Currently the PCS illuminant/adopted white point (the computational
* white point) are required to be D50,
@ -2011,7 +2011,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
*/
if (memcmp(profile+68, D50_nCIEXYZ, 12) != 0)
(void)png_icc_profile_error(png_ptr, NULL, name, 0/*no tag value*/,
"PCS illuminant is not D50");
"PCS illuminant is not D50");
/* The PNG spec requires this:
* "If the iCCP chunk is present, the image samples conform to the colour
@ -2039,18 +2039,18 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
case 0x52474220: /* 'RGB ' */
if ((color_type & PNG_COLOR_MASK_COLOR) == 0)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"RGB color space not permitted on grayscale PNG");
"RGB color space not permitted on grayscale PNG");
break;
case 0x47524159: /* 'GRAY' */
if ((color_type & PNG_COLOR_MASK_COLOR) != 0)
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"Gray color space not permitted on RGB PNG");
"Gray color space not permitted on RGB PNG");
break;
default:
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid ICC profile color space");
"invalid ICC profile color space");
}
/* It is up to the application to check that the profile class matches the
@ -2075,7 +2075,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
case 0x61627374: /* 'abst' */
/* May not be embedded in an image */
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"invalid embedded Abstract ICC profile");
"invalid embedded Abstract ICC profile");
case 0x6c696e6b: /* 'link' */
/* DeviceLink profiles cannot be interpreted in a non-device specific
@ -2085,7 +2085,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
* PNG.
*/
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"unexpected DeviceLink ICC profile class");
"unexpected DeviceLink ICC profile class");
case 0x6e6d636c: /* 'nmcl' */
/* A NamedColor profile is also device specific, however it doesn't
@ -2093,7 +2093,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
* certainly it will fail the tests below.
*/
(void)png_icc_profile_error(png_ptr, NULL, name, temp,
"unexpected NamedColor ICC profile class");
"unexpected NamedColor ICC profile class");
break;
default:
@ -2103,7 +2103,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
* understood profiles.
*/
(void)png_icc_profile_error(png_ptr, NULL, name, temp,
"unrecognized ICC profile class");
"unrecognized ICC profile class");
break;
}
@ -2119,7 +2119,7 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
default:
return png_icc_profile_error(png_ptr, colorspace, name, temp,
"unexpected ICC PCS encoding");
"unexpected ICC PCS encoding");
}
return 1;
@ -2127,8 +2127,8 @@ png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
int /* PRIVATE */
png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_uint_32 profile_length,
png_const_bytep profile /* header plus whole tag table */)
png_const_charp name, png_uint_32 profile_length,
png_const_bytep profile /* header plus whole tag table */)
{
png_uint_32 tag_count = png_get_uint_32(profile+128);
png_uint_32 itag;
@ -2156,7 +2156,7 @@ png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
* alignment.
*/
(void)png_icc_profile_error(png_ptr, NULL, name, tag_id,
"ICC profile tag start not a multiple of 4");
"ICC profile tag start not a multiple of 4");
}
/* This is a hard error; potentially it can cause read outside the
@ -2164,7 +2164,7 @@ png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
*/
if (tag_start > profile_length || tag_length > profile_length - tag_start)
return png_icc_profile_error(png_ptr, colorspace, name, tag_id,
"ICC profile tag outside profile");
"ICC profile tag outside profile");
}
return 1; /* success, maybe with warnings */
@ -2192,22 +2192,22 @@ static const struct
*/
/* adler32, crc32, MD5[4], intent, date, length, file-name */
PNG_ICC_CHECKSUM(0x0a3fd9f6, 0x3b8772b9,
PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0,
"2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc")
PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0,
"2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc")
/* ICC sRGB v2 perceptual no black-compensation: */
PNG_ICC_CHECKSUM(0x4909e5e1, 0x427ebb21,
PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0,
"2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc")
PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0,
"2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc")
PNG_ICC_CHECKSUM(0xfd2144a1, 0x306fd8ae,
PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0,
"2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc")
PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0,
"2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc")
/* ICC sRGB v4 perceptual */
PNG_ICC_CHECKSUM(0x209c35d2, 0xbbef7812,
PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0,
"2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc")
PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0,
"2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc")
/* The following profiles have no known MD5 checksum. If there is a match
* on the (empty) MD5 the other fields are used to attempt a match and
@ -2215,8 +2215,8 @@ static const struct
* which suggests that they were also made by Hewlett Packard.
*/
PNG_ICC_CHECKSUM(0xa054d762, 0x5d5129ce,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0,
"2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc")
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0,
"2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc")
/* This is a 'mntr' (display) profile with a mediaWhitePointTag that does not
* match the D50 PCS illuminant in the header (it is in fact the D65 values,
@ -2226,17 +2226,17 @@ static const struct
* chromaticAdaptationTag.
*/
PNG_ICC_CHECKSUM(0xf784f3fb, 0x182ea552,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual")
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual")
PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d,
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
"1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
};
static int
png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
png_const_bytep profile, uLong adler)
png_const_bytep profile, uLong adler)
{
/* The quick check is to verify just the MD5 signature and trust the
* rest of the data. Because the profile has already been verified for
@ -2320,7 +2320,7 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
* which is made irrelevant by this error.
*/
png_chunk_report(png_ptr, "known incorrect sRGB profile",
PNG_CHUNK_ERROR);
PNG_CHUNK_ERROR);
}
/* Warn that this being done; this isn't even an error since
@ -2330,8 +2330,8 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
else if (png_sRGB_checks[i].have_md5 == 0)
{
png_chunk_report(png_ptr,
"out-of-date sRGB profile with no signature",
PNG_CHUNK_WARNING);
"out-of-date sRGB profile with no signature",
PNG_CHUNK_WARNING);
}
return 1+png_sRGB_checks[i].is_broken;
@ -2354,38 +2354,36 @@ png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
return 0; /* no match */
}
#endif /* PNG_sRGB_PROFILE_CHECKS >= 0 */
void /* PRIVATE */
png_icc_set_sRGB(png_const_structrp png_ptr,
png_colorspacerp colorspace, png_const_bytep profile, uLong adler)
png_colorspacerp colorspace, png_const_bytep profile, uLong adler)
{
/* Is this profile one of the known ICC sRGB profiles? If it is, just set
* the sRGB information.
*/
#if PNG_sRGB_PROFILE_CHECKS >= 0
if (png_compare_ICC_profile_with_sRGB(png_ptr, profile, adler) != 0)
#endif
(void)png_colorspace_set_sRGB(png_ptr, colorspace,
(int)/*already checked*/png_get_uint_32(profile+64));
}
#endif /* PNG_sRGB_PROFILE_CHECKS >= 0 */
#endif /* sRGB */
int /* PRIVATE */
png_colorspace_set_ICC(png_const_structrp png_ptr, png_colorspacerp colorspace,
png_const_charp name, png_uint_32 profile_length, png_const_bytep profile,
int color_type)
png_const_charp name, png_uint_32 profile_length, png_const_bytep profile,
int color_type)
{
if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0)
return 0;
if (png_icc_check_length(png_ptr, colorspace, name, profile_length) != 0 &&
png_icc_check_header(png_ptr, colorspace, name, profile_length, profile,
color_type) != 0 &&
color_type) != 0 &&
png_icc_check_tag_table(png_ptr, colorspace, name, profile_length,
profile) != 0)
profile) != 0)
{
# ifdef PNG_sRGB_SUPPORTED
# if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0
/* If no sRGB support, don't try storing sRGB information */
png_icc_set_sRGB(png_ptr, colorspace, profile, 0);
# endif
@ -2444,7 +2442,7 @@ png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
/* Check for an internal error. */
if (r+g+b != 32768)
png_error(png_ptr,
"internal error handling cHRM coefficients");
"internal error handling cHRM coefficients");
else
{
@ -2470,7 +2468,7 @@ png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
static int /* PRIVATE */
png_gt(size_t a, size_t b)
{
return a > b;
return a > b;
}
#else
# define png_gt(a,b) ((a) > (b))
@ -2478,9 +2476,9 @@ png_gt(size_t a, size_t b)
void /* PRIVATE */
png_check_IHDR(png_const_structrp png_ptr,
png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_type, int compression_type,
int filter_type)
png_uint_32 width, png_uint_32 height, int bit_depth,
int color_type, int interlace_type, int compression_type,
int filter_type)
{
int error = 0;
@ -2643,7 +2641,7 @@ png_check_IHDR(png_const_structrp png_ptr,
int /* PRIVATE */
png_check_fp_number(png_const_charp string, png_size_t size, int *statep,
png_size_tp whereami)
png_size_tp whereami)
{
int state = *statep;
png_size_t i = *whereami;
@ -3806,25 +3804,25 @@ png_gamma_16bit_correct(unsigned int value, png_fixed_point gamma_val)
{
if (value > 0 && value < 65535)
{
# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
/* The same (unsigned int)->(double) constraints apply here as above,
* however in this case the (unsigned int) to (int) conversion can
* overflow on an ANSI-C90 compliant system so the cast needs to ensure
* that this is not possible.
*/
double r = floor(65535*pow((png_int_32)value/65535.,
gamma_val*.00001)+.5);
return (png_uint_16)r;
# else
png_int_32 lg2 = png_log16bit(value);
png_fixed_point res;
# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
/* The same (unsigned int)->(double) constraints apply here as above,
* however in this case the (unsigned int) to (int) conversion can
* overflow on an ANSI-C90 compliant system so the cast needs to ensure
* that this is not possible.
*/
double r = floor(65535*pow((png_int_32)value/65535.,
gamma_val*.00001)+.5);
return (png_uint_16)r;
# else
png_int_32 lg2 = png_log16bit(value);
png_fixed_point res;
if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1) != 0)
return png_exp16bit(res);
if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1) != 0)
return png_exp16bit(res);
/* Overflow. */
value = 0;
# endif
/* Overflow. */
value = 0;
# endif
}
return (png_uint_16)value;
@ -3863,7 +3861,7 @@ png_gamma_correct(png_structrp png_ptr, unsigned int value,
*/
static void
png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable,
PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
{
/* Various values derived from 'shift': */
PNG_CONST unsigned int num = 1U << (8U - shift);
@ -3940,7 +3938,7 @@ png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable,
*/
static void
png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
{
PNG_CONST unsigned int num = 1U << (8U - shift);
PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
@ -4008,7 +4006,7 @@ png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
*/
static void
png_build_8bit_table(png_structrp png_ptr, png_bytepp ptable,
PNG_CONST png_fixed_point gamma_val)
PNG_CONST png_fixed_point gamma_val)
{
unsigned int i;
png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256);
@ -4088,131 +4086,133 @@ png_destroy_gamma_table(png_structrp png_ptr)
void /* PRIVATE */
png_build_gamma_table(png_structrp png_ptr, int bit_depth)
{
png_debug(1, "in png_build_gamma_table");
png_debug(1, "in png_build_gamma_table");
/* Remove any existing table; this copes with multiple calls to
* png_read_update_info. The warning is because building the gamma tables
* multiple times is a performance hit - it's harmless but the ability to call
* png_read_update_info() multiple times is new in 1.5.6 so it seems sensible
* to warn if the app introduces such a hit.
*/
if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL)
{
png_warning(png_ptr, "gamma table being rebuilt");
png_destroy_gamma_table(png_ptr);
}
/* Remove any existing table; this copes with multiple calls to
* png_read_update_info. The warning is because building the gamma tables
* multiple times is a performance hit - it's harmless but the ability to
* call png_read_update_info() multiple times is new in 1.5.6 so it seems
* sensible to warn if the app introduces such a hit.
*/
if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL)
{
png_warning(png_ptr, "gamma table being rebuilt");
png_destroy_gamma_table(png_ptr);
}
if (bit_depth <= 8)
{
png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma) : PNG_FP_1);
if (bit_depth <= 8)
{
png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
png_ptr->screen_gamma > 0 ?
png_reciprocal2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma) : PNG_FP_1);
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0)
{
png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
png_reciprocal(png_ptr->colorspace.gamma));
if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0)
{
png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
png_reciprocal(png_ptr->colorspace.gamma));
png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,
png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
}
png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,
png_ptr->screen_gamma > 0 ?
png_reciprocal(png_ptr->screen_gamma) :
png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
}
#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
}
}
#ifdef PNG_16BIT_SUPPORTED
else
{
png_byte shift, sig_bit;
else
{
png_byte shift, sig_bit;
if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0)
{
sig_bit = png_ptr->sig_bit.red;
if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0)
{
sig_bit = png_ptr->sig_bit.red;
if (png_ptr->sig_bit.green > sig_bit)
sig_bit = png_ptr->sig_bit.green;
if (png_ptr->sig_bit.green > sig_bit)
sig_bit = png_ptr->sig_bit.green;
if (png_ptr->sig_bit.blue > sig_bit)
sig_bit = png_ptr->sig_bit.blue;
}
else
sig_bit = png_ptr->sig_bit.gray;
if (png_ptr->sig_bit.blue > sig_bit)
sig_bit = png_ptr->sig_bit.blue;
}
else
sig_bit = png_ptr->sig_bit.gray;
/* 16-bit gamma code uses this equation:
*
* ov = table[(iv & 0xff) >> gamma_shift][iv >> 8]
*
* Where 'iv' is the input color value and 'ov' is the output value -
* pow(iv, gamma).
*
* Thus the gamma table consists of up to 256 256-entry tables. The table
* is selected by the (8-gamma_shift) most significant of the low 8 bits of
* the color value then indexed by the upper 8 bits:
*
* table[low bits][high 8 bits]
*
* So the table 'n' corresponds to all those 'iv' of:
*
* <all high 8-bit values><n << gamma_shift>..<(n+1 << gamma_shift)-1>
*
*/
if (sig_bit > 0 && sig_bit < 16U)
/* shift == insignificant bits */
shift = (png_byte)((16U - sig_bit) & 0xff);
/* 16-bit gamma code uses this equation:
*
* ov = table[(iv & 0xff) >> gamma_shift][iv >> 8]
*
* Where 'iv' is the input color value and 'ov' is the output value -
* pow(iv, gamma).
*
* Thus the gamma table consists of up to 256 256-entry tables. The table
* is selected by the (8-gamma_shift) most significant of the low 8 bits
* of the color value then indexed by the upper 8 bits:
*
* table[low bits][high 8 bits]
*
* So the table 'n' corresponds to all those 'iv' of:
*
* <all high 8-bit values><n << gamma_shift>..<(n+1 << gamma_shift)-1>
*
*/
if (sig_bit > 0 && sig_bit < 16U)
/* shift == insignificant bits */
shift = (png_byte)((16U - sig_bit) & 0xff);
else
shift = 0; /* keep all 16 bits */
else
shift = 0; /* keep all 16 bits */
if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0)
{
/* PNG_MAX_GAMMA_8 is the number of bits to keep - effectively
* the significant bits in the *input* when the output will
* eventually be 8 bits. By default it is 11.
*/
if (shift < (16U - PNG_MAX_GAMMA_8))
shift = (16U - PNG_MAX_GAMMA_8);
}
if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0)
{
/* PNG_MAX_GAMMA_8 is the number of bits to keep - effectively
* the significant bits in the *input* when the output will
* eventually be 8 bits. By default it is 11.
*/
if (shift < (16U - PNG_MAX_GAMMA_8))
shift = (16U - PNG_MAX_GAMMA_8);
}
if (shift > 8U)
shift = 8U; /* Guarantees at least one table! */
if (shift > 8U)
shift = 8U; /* Guarantees at least one table! */
png_ptr->gamma_shift = shift;
png_ptr->gamma_shift = shift;
/* NOTE: prior to 1.5.4 this test used to include PNG_BACKGROUND (now
* PNG_COMPOSE). This effectively smashed the background calculation for
* 16-bit output because the 8-bit table assumes the result will be reduced
* to 8 bits.
*/
if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0)
png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma) : PNG_FP_1);
/* NOTE: prior to 1.5.4 this test used to include PNG_BACKGROUND (now
* PNG_COMPOSE). This effectively smashed the background calculation for
* 16-bit output because the 8-bit table assumes the result will be
* reduced to 8 bits.
*/
if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0)
png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma) : PNG_FP_1);
else
png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma) : PNG_FP_1);
else
png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma) : PNG_FP_1);
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0)
{
png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift,
png_reciprocal(png_ptr->colorspace.gamma));
if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0)
{
png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift,
png_reciprocal(png_ptr->colorspace.gamma));
/* Notice that the '16 from 1' table should be full precision, however
* the lookup on this table still uses gamma_shift, so it can't be.
* TODO: fix this.
*/
png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift,
png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
}
/* Notice that the '16 from 1' table should be full precision, however
* the lookup on this table still uses gamma_shift, so it can't be.
* TODO: fix this.
*/
png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift,
png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
}
#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
}
}
#endif /* 16BIT */
}
#endif /* READ_GAMMA */

149
png.h
View File

@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.23, June 9, 2016
* libpng version 1.6.24, August 4, 2016
*
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,7 +12,7 @@
* Authors and maintainers:
* 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 0.97, January 1998, through 1.6.23, June 9, 2016:
* libpng versions 0.97, January 1998, through 1.6.24, August 4, 2016:
* Glenn Randers-Pehrson.
* See also "Contributing Authors", below.
*/
@ -29,7 +29,7 @@
* files that are distributed with libpng have other copyright owners and
* are released under other open source licenses.
*
* libpng versions 1.0.7, July 1, 2000 through 1.6.23, June 9, 2016 are
* libpng versions 1.0.7, July 1, 2000 through 1.6.24, August 4, 2016 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
* disclaimer and license as libpng-1.0.6 with the following individuals
@ -217,7 +217,7 @@
* ...
* 1.5.27 15 10527 15.so.15.27[.0]
* ...
* 1.6.23 16 10623 16.so.16.23[.0]
* 1.6.24 16 10624 16.so.16.24[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@ -245,13 +245,13 @@
* Y2K compliance in libpng:
* =========================
*
* June 9, 2016
* August 4, 2016
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
*
* This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.6.23 are Y2K compliant. It is my belief that
* upward through 1.6.24 are Y2K compliant. It is my belief that
* earlier versions were also Y2K compliant.
*
* Libpng only has two year fields. One is a 2-byte unsigned integer
@ -313,9 +313,8 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.23"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.6.23 - June 9, 2016\n"
#define PNG_LIBPNG_VER_STRING "1.6.24"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.24 - August 4, 2016\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16
@ -323,7 +322,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 23
#define PNG_LIBPNG_VER_RELEASE 24
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero:
@ -354,20 +353,20 @@
* 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
*/
#define PNG_LIBPNG_VER 10623 /* 1.6.23 */
#define PNG_LIBPNG_VER 10624 /* 1.6.24 */
/* Library configuration: these options cannot be changed after
* the library has been built.
*/
#ifndef PNGLCONF_H
/* If pnglibconf.h is missing, you can
* copy scripts/pnglibconf.h.prebuilt to pnglibconf.h
*/
/* If pnglibconf.h is missing, you can
* copy scripts/pnglibconf.h.prebuilt to pnglibconf.h
*/
# include "pnglibconf.h"
#endif
#ifndef PNG_VERSION_INFO_ONLY
/* Machine specific configuration. */
/* Machine specific configuration. */
# include "pngconf.h"
#endif
@ -464,7 +463,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char* png_libpng_version_1_6_23;
typedef char* png_libpng_version_1_6_24;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*
@ -657,17 +656,17 @@ typedef png_time * * png_timepp;
*/
typedef struct png_unknown_chunk_t
{
png_byte name[5]; /* Textual chunk name with '\0' terminator */
png_byte *data; /* Data, should not be modified on read! */
png_size_t size;
png_byte name[5]; /* Textual chunk name with '\0' terminator */
png_byte *data; /* Data, should not be modified on read! */
png_size_t size;
/* On write 'location' must be set using the flag values listed below.
* Notice that on read it is set by libpng however the values stored have
* more bits set than are listed below. Always treat the value as a
* bitmask. On write set only one bit - setting multiple bits may cause the
* chunk to be written in multiple places.
*/
png_byte location; /* mode of operation at read time */
/* On write 'location' must be set using the flag values listed below.
* Notice that on read it is set by libpng however the values stored have
* more bits set than are listed below. Always treat the value as a
* bitmask. On write set only one bit - setting multiple bits may cause the
* chunk to be written in multiple places.
*/
png_byte location; /* mode of operation at read time */
}
png_unknown_chunk;
@ -2300,8 +2299,10 @@ PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr,
* except for the IHDR, PLTE, tRNS, IDAT, and IEND chunks (which continue to
* be processed by libpng.
*/
#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr,
int keep, png_const_bytep chunk_list, int num_chunks));
#endif /* HANDLE_AS_UNKNOWN */
/* The "keep" PNG_HANDLE_CHUNK_ parameter for the specified chunk is returned;
* the result is therefore true (non-zero) if special handling is required,
@ -2309,7 +2310,7 @@ PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr,
*/
PNG_EXPORT(173, int, png_handle_as_unknown, (png_const_structrp png_ptr,
png_const_bytep chunk_name));
#endif
#endif /* SET_UNKNOWN_CHUNKS */
#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr,
@ -2530,33 +2531,37 @@ PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type,
/* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
# define png_composite(composite, fg, alpha, bg) \
{ png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \
* (png_uint_16)(alpha) \
+ (png_uint_16)(bg)*(png_uint_16)(255 \
- (png_uint_16)(alpha)) + 128); \
(composite) = (png_byte)(((temp + (temp >> 8)) >> 8) & 0xff); }
# define png_composite(composite, fg, alpha, bg) \
{ \
png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \
* (png_uint_16)(alpha) \
+ (png_uint_16)(bg)*(png_uint_16)(255 \
- (png_uint_16)(alpha)) + 128); \
(composite) = (png_byte)(((temp + (temp >> 8)) >> 8) & 0xff); \
}
# define png_composite_16(composite, fg, alpha, bg) \
{ png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \
* (png_uint_32)(alpha) \
+ (png_uint_32)(bg)*(65535 \
- (png_uint_32)(alpha)) + 32768); \
(composite) = (png_uint_16)(0xffff & ((temp + (temp >> 16)) >> 16)); }
# define png_composite_16(composite, fg, alpha, bg) \
{ \
png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \
* (png_uint_32)(alpha) \
+ (png_uint_32)(bg)*(65535 \
- (png_uint_32)(alpha)) + 32768); \
(composite) = (png_uint_16)(0xffff & ((temp + (temp >> 16)) >> 16)); \
}
#else /* Standard method using integer division */
# define png_composite(composite, fg, alpha, bg) \
(composite) = \
(png_byte)(0xff & (((png_uint_16)(fg) * (png_uint_16)(alpha) + \
(png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
127) / 255))
# define png_composite(composite, fg, alpha, bg) \
(composite) = \
(png_byte)(0xff & (((png_uint_16)(fg) * (png_uint_16)(alpha) + \
(png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
127) / 255))
# define png_composite_16(composite, fg, alpha, bg) \
(composite) = \
(png_uint_16)(0xffff & (((png_uint_32)(fg) * (png_uint_32)(alpha) + \
(png_uint_32)(bg)*(png_uint_32)(65535 - (png_uint_32)(alpha)) + \
32767) / 65535))
# define png_composite_16(composite, fg, alpha, bg) \
(composite) = \
(png_uint_16)(0xffff & (((png_uint_32)(fg) * (png_uint_32)(alpha) + \
(png_uint_32)(bg)*(png_uint_32)(65535 - (png_uint_32)(alpha)) + \
32767) / 65535))
#endif /* READ_COMPOSITE_NODIV */
#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
@ -2592,38 +2597,38 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
* format for negative values, which is almost certainly true.
*/
# define PNG_get_uint_32(buf) \
(((png_uint_32)(*(buf)) << 24) + \
((png_uint_32)(*((buf) + 1)) << 16) + \
((png_uint_32)(*((buf) + 2)) << 8) + \
((png_uint_32)(*((buf) + 3))))
(((png_uint_32)(*(buf)) << 24) + \
((png_uint_32)(*((buf) + 1)) << 16) + \
((png_uint_32)(*((buf) + 2)) << 8) + \
((png_uint_32)(*((buf) + 3))))
/* From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
* function) incorrectly returned a value of type png_uint_32.
*/
# define PNG_get_uint_16(buf) \
((png_uint_16) \
(((unsigned int)(*(buf)) << 8) + \
((unsigned int)(*((buf) + 1)))))
((png_uint_16) \
(((unsigned int)(*(buf)) << 8) + \
((unsigned int)(*((buf) + 1)))))
# define PNG_get_int_32(buf) \
((png_int_32)((*(buf) & 0x80) \
? -((png_int_32)(((png_get_uint_32(buf)^0xffffffffU)+1U)&0x7fffffffU)) \
: (png_int_32)png_get_uint_32(buf)))
((png_int_32)((*(buf) & 0x80) \
? -((png_int_32)(((png_get_uint_32(buf)^0xffffffffU)+1U)&0x7fffffffU)) \
: (png_int_32)png_get_uint_32(buf)))
/* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h,
* but defining a macro name prefixed with PNG_PREFIX.
*/
/* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h,
* but defining a macro name prefixed with PNG_PREFIX.
*/
# ifndef PNG_PREFIX
# define png_get_uint_32(buf) PNG_get_uint_32(buf)
# define png_get_uint_16(buf) PNG_get_uint_16(buf)
# define png_get_int_32(buf) PNG_get_int_32(buf)
# define png_get_uint_32(buf) PNG_get_uint_32(buf)
# define png_get_uint_16(buf) PNG_get_uint_16(buf)
# define png_get_int_32(buf) PNG_get_int_32(buf)
# endif
#else
# ifdef PNG_PREFIX
/* No macros; revert to the (redefined) function */
# define PNG_get_uint_32 (png_get_uint_32)
# define PNG_get_uint_16 (png_get_uint_16)
# define PNG_get_int_32 (png_get_int_32)
/* No macros; revert to the (redefined) function */
# define PNG_get_uint_32 (png_get_uint_32)
# define PNG_get_uint_16 (png_get_uint_16)
# define PNG_get_int_32 (png_get_int_32)
# endif
#endif
@ -3171,9 +3176,9 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
#define PNG_IMAGE_PNG_SIZE_MAX_(image, image_size)\
((8U/*sig*/+25U/*IHDR*/+16U/*gAMA*/+44U/*cHRM*/+12U/*IEND*/+\
(((image).format&PNG_FORMAT_FLAG_COLORMAP)?/*colormap: PLTE, tRNS*/\
12U+3U*(image).colormap_entries/*PLTE data*/+\
(((image).format&PNG_FORMAT_FLAG_ALPHA)?\
12U/*tRNS*/+(image).colormap_entries:0U):0U)+\
12U+3U*(image).colormap_entries/*PLTE data*/+\
(((image).format&PNG_FORMAT_FLAG_ALPHA)?\
12U/*tRNS*/+(image).colormap_entries:0U):0U)+\
12U)+(12U*((image_size)/PNG_ZBUF_SIZE))/*IDAT*/+(image_size))
/* A helper for the following macro; if your compiler cannot handle the
* following macro use this one with the result of

46
pngconf.h
View File

@ -1,9 +1,9 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.6.23, June 9, 2016
* libpng version 1.6.24, August 4, 2016
*
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -188,27 +188,27 @@
* 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!
*/
/* 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'.
*/
/* 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.
*/
/* 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
@ -225,10 +225,10 @@
# 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.
*/
/* 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
@ -244,9 +244,9 @@
# 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!)
*/
/* 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 */
@ -267,7 +267,7 @@
*/
#ifndef PNG_IMPEXP
# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
/* This forces use of a DLL, disallowing static linking */
/* This forces use of a DLL, disallowing static linking */
# define PNG_IMPEXP PNG_DLL_IMPORT
# endif
@ -340,7 +340,7 @@
* less efficient code.
*/
# if defined(__clang__) && defined(__has_attribute)
/* Clang defines both __clang__ and __GNUC__. Check __clang__ first. */
/* 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

70
pngerror.c
View File

@ -1,8 +1,8 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* Last changed in libpng 1.6.15 [November 20, 2014]
* Copyright (c) 1998-2002,2004,2006-2014 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -26,7 +26,7 @@ static PNG_FUNCTION(void, png_default_error,PNGARG((png_const_structrp png_ptr,
#ifdef PNG_WARNINGS_SUPPORTED
static void /* PRIVATE */
png_default_warning PNGARG((png_const_structrp png_ptr,
png_const_charp warning_message));
png_const_charp warning_message));
#endif /* WARNINGS */
/* This function is called whenever there is a fatal error. This function
@ -37,7 +37,7 @@ png_default_warning PNGARG((png_const_structrp png_ptr,
#ifdef PNG_ERROR_TEXT_SUPPORTED
PNG_FUNCTION(void,PNGAPI
png_error,(png_const_structrp png_ptr, png_const_charp error_message),
PNG_NORETURN)
PNG_NORETURN)
{
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
char msg[16];
@ -65,18 +65,18 @@ png_error,(png_const_structrp png_ptr, png_const_charp error_message),
else
error_message += offset;
}
else
{
if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0)
{
msg[0] = '0';
msg[1] = '\0';
error_message = msg;
}
}
}
else
{
if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0)
{
msg[0] = '0';
msg[1] = '\0';
error_message = msg;
}
}
}
}
#endif
if (png_ptr != NULL && png_ptr->error_fn != NULL)
@ -110,7 +110,7 @@ png_err,(png_const_structrp png_ptr),PNG_NORETURN)
*/
size_t
png_safecat(png_charp buffer, size_t bufsize, size_t pos,
png_const_charp string)
png_const_charp string)
{
if (buffer != NULL && pos < bufsize)
{
@ -131,7 +131,7 @@ png_safecat(png_charp buffer, size_t bufsize, size_t pos,
*/
png_charp
png_format_number(png_const_charp start, png_charp end, int format,
png_alloc_size_t number)
png_alloc_size_t number)
{
int count = 0; /* number of digits output */
int mincount = 1; /* minimum number required */
@ -233,7 +233,7 @@ png_warning(png_const_structrp png_ptr, png_const_charp warning_message)
}
if (png_ptr != NULL && png_ptr->warning_fn != NULL)
(*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr),
warning_message + offset);
warning_message + offset);
else
png_default_warning(png_ptr, warning_message + offset);
}
@ -245,7 +245,7 @@ png_warning(png_const_structrp png_ptr, png_const_charp warning_message)
*/
void
png_warning_parameter(png_warning_parameters p, int number,
png_const_charp string)
png_const_charp string)
{
if (number > 0 && number <= PNG_WARNING_PARAMETER_COUNT)
(void)png_safecat(p[number-1], (sizeof p[number-1]), 0, string);
@ -253,7 +253,7 @@ png_warning_parameter(png_warning_parameters p, int number,
void
png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
png_alloc_size_t value)
png_alloc_size_t value)
{
char buffer[PNG_NUMBER_BUFFER_SIZE];
png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
@ -261,7 +261,7 @@ png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
void
png_warning_parameter_signed(png_warning_parameters p, int number, int format,
png_int_32 value)
png_int_32 value)
{
png_alloc_size_t u;
png_charp str;
@ -282,7 +282,7 @@ png_warning_parameter_signed(png_warning_parameters p, int number, int format,
void
png_formatted_warning(png_const_structrp png_ptr, png_warning_parameters p,
png_const_charp message)
png_const_charp message)
{
/* The internal buffer is just 192 bytes - enough for all our messages,
* overflow doesn't happen because this code checks! If someone figures
@ -391,10 +391,10 @@ png_benign_error(png_const_structrp png_ptr, png_const_charp error_message)
void /* PRIVATE */
png_app_warning(png_const_structrp png_ptr, png_const_charp error_message)
{
if ((png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN) != 0)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
if ((png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN) != 0)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
@ -404,10 +404,10 @@ png_app_warning(png_const_structrp png_ptr, png_const_charp error_message)
void /* PRIVATE */
png_app_error(png_const_structrp png_ptr, png_const_charp error_message)
{
if ((png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN) != 0)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
if ((png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN) != 0)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
@ -478,7 +478,7 @@ png_format_buffer(png_const_structrp png_ptr, png_charp buffer, png_const_charp
#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
PNG_FUNCTION(void,PNGAPI
png_chunk_error,(png_const_structrp png_ptr, png_const_charp error_message),
PNG_NORETURN)
PNG_NORETURN)
{
char msg[18+PNG_MAX_ERROR_TEXT];
if (png_ptr == NULL)
@ -620,7 +620,7 @@ png_set_longjmp_fn(png_structrp png_ptr, png_longjmp_ptr longjmp_fn,
else
{
png_ptr->jmp_buf_ptr = png_voidcast(jmp_buf *,
png_malloc_warn(png_ptr, jmp_buf_size));
png_malloc_warn(png_ptr, jmp_buf_size));
if (png_ptr->jmp_buf_ptr == NULL)
return NULL; /* new NULL return on OOM */
@ -709,7 +709,7 @@ png_free_jmpbuf(png_structrp png_ptr)
*/
static PNG_FUNCTION(void /* PRIVATE */,
png_default_error,(png_const_structrp png_ptr, png_const_charp error_message),
PNG_NORETURN)
PNG_NORETURN)
{
#ifdef PNG_CONSOLE_IO_SUPPORTED
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
@ -883,7 +883,7 @@ png_set_strip_error_numbers(png_structrp png_ptr, png_uint_32 strip_mode)
*/
PNG_FUNCTION(void /* PRIVATE */, (PNGCBAPI
png_safe_error),(png_structp png_nonconst_ptr, png_const_charp error_message),
PNG_NORETURN)
PNG_NORETURN)
{
const png_const_structrp png_ptr = png_nonconst_ptr;
png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
@ -906,7 +906,7 @@ png_safe_error),(png_structp png_nonconst_ptr, png_const_charp error_message),
/* Missing longjmp buffer, the following is to help debugging: */
{
size_t pos = png_safecat(image->message, (sizeof image->message), 0,
"bad longjmp: ");
"bad longjmp: ");
png_safecat(image->message, (sizeof image->message), pos,
error_message);
}

56
pngget.c
View File

@ -1,8 +1,8 @@
/* pngget.c - retrieval of values from info struct
*
* Last changed in libpng 1.6.17 [March 26, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -486,7 +486,7 @@ png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
#ifdef PNG_bKGD_SUPPORTED
png_uint_32 PNGAPI
png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
png_color_16p *background)
png_color_16p *background)
{
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_bKGD) != 0 &&
@ -526,28 +526,28 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
if (white_x != NULL)
*white_x = png_float(png_ptr,
info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
if (white_y != NULL)
*white_y = png_float(png_ptr,
info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
if (red_x != NULL)
*red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
"cHRM red X");
"cHRM red X");
if (red_y != NULL)
*red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
"cHRM red Y");
"cHRM red Y");
if (green_x != NULL)
*green_x = png_float(png_ptr,
info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
if (green_y != NULL)
*green_y = png_float(png_ptr,
info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
if (blue_x != NULL)
*blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
"cHRM blue X");
"cHRM blue X");
if (blue_y != NULL)
*blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
"cHRM blue Y");
"cHRM blue Y");
return (PNG_INFO_cHRM);
}
@ -556,42 +556,42 @@ png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 PNGAPI
png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *red_X, double *red_Y, double *red_Z, double *green_X,
double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
double *blue_Z)
double *red_X, double *red_Y, double *red_Z, double *green_X,
double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
double *blue_Z)
{
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
if (red_X != NULL)
*red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
"cHRM red X");
"cHRM red X");
if (red_Y != NULL)
*red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
"cHRM red Y");
"cHRM red Y");
if (red_Z != NULL)
*red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
"cHRM red Z");
"cHRM red Z");
if (green_X != NULL)
*green_X = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
if (green_Y != NULL)
*green_Y = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
if (green_Z != NULL)
*green_Z = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
if (blue_X != NULL)
*blue_X = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
if (blue_Y != NULL)
*blue_Y = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
if (blue_Z != NULL)
*blue_Z = png_float(png_ptr,
info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
return (PNG_INFO_cHRM);
}
@ -681,8 +681,8 @@ png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_debug1(1, "in %s retrieval function", "gAMA");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
file_gamma != NULL)
(info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
file_gamma != NULL)
{
*file_gamma = info_ptr->colorspace.gamma;
return (PNG_INFO_gAMA);
@ -704,7 +704,7 @@ png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr,
file_gamma != NULL)
{
*file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
"png_get_gAMA");
"png_get_gAMA");
return (PNG_INFO_gAMA);
}
@ -901,7 +901,7 @@ png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
*/
*width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
*height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
"sCAL height");
"sCAL height");
return (PNG_INFO_sCAL);
}

20
pngmem.c
View File

@ -1,8 +1,8 @@
/* pngmem.c - stub functions for memory allocation
*
* Last changed in libpng 1.6.15 [November 20, 2014]
* Copyright (c) 1998-2002,2004,2006-2014 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2014,2016 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.)
*
@ -66,7 +66,7 @@ png_calloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
*/
PNG_FUNCTION(png_voidp /* PRIVATE */,
png_malloc_base,(png_const_structrp png_ptr, png_alloc_size_t size),
PNG_ALLOCATED)
PNG_ALLOCATED)
{
/* Moved to png_malloc_base from png_malloc_default in 1.6.0; the DOS
* allocators have also been removed in 1.6.0, so any 16-bit system now has
@ -107,7 +107,7 @@ png_malloc_base,(png_const_structrp png_ptr, png_alloc_size_t size),
*/
static png_voidp
png_malloc_array_checked(png_const_structrp png_ptr, int nelements,
size_t element_size)
size_t element_size)
{
png_alloc_size_t req = nelements; /* known to be > 0 */
@ -120,7 +120,7 @@ png_malloc_array_checked(png_const_structrp png_ptr, int nelements,
PNG_FUNCTION(png_voidp /* PRIVATE */,
png_malloc_array,(png_const_structrp png_ptr, int nelements,
size_t element_size),PNG_ALLOCATED)
size_t element_size),PNG_ALLOCATED)
{
if (nelements <= 0 || element_size == 0)
png_error(png_ptr, "internal error: array alloc");
@ -130,7 +130,7 @@ png_malloc_array,(png_const_structrp png_ptr, int nelements,
PNG_FUNCTION(png_voidp /* PRIVATE */,
png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array,
int old_elements, int add_elements, size_t element_size),PNG_ALLOCATED)
int old_elements, int add_elements, size_t element_size),PNG_ALLOCATED)
{
/* These are internal errors: */
if (add_elements <= 0 || element_size == 0 || old_elements < 0 ||
@ -143,7 +143,7 @@ png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array,
if (add_elements <= INT_MAX - old_elements)
{
png_voidp new_array = png_malloc_array_checked(png_ptr,
old_elements+add_elements, element_size);
old_elements+add_elements, element_size);
if (new_array != NULL)
{
@ -154,7 +154,7 @@ png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array,
memcpy(new_array, old_array, element_size*(unsigned)old_elements);
memset((char*)new_array + element_size*(unsigned)old_elements, 0,
element_size*(unsigned)add_elements);
element_size*(unsigned)add_elements);
return new_array;
}
@ -187,7 +187,7 @@ png_malloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
#ifdef PNG_USER_MEM_SUPPORTED
PNG_FUNCTION(png_voidp,PNGAPI
png_malloc_default,(png_const_structrp png_ptr, png_alloc_size_t size),
PNG_ALLOCATED PNG_DEPRECATED)
PNG_ALLOCATED PNG_DEPRECATED)
{
png_voidp ret;
@ -210,7 +210,7 @@ png_malloc_default,(png_const_structrp png_ptr, png_alloc_size_t size),
*/
PNG_FUNCTION(png_voidp,PNGAPI
png_malloc_warn,(png_const_structrp png_ptr, png_alloc_size_t size),
PNG_ALLOCATED)
PNG_ALLOCATED)
{
if (png_ptr != NULL)
{

22
pngpread.c
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
* Last changed in libpng 1.6.23 [June 9, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
@ -77,11 +77,11 @@ png_process_data_pause(png_structrp png_ptr, int save)
png_uint_32 PNGAPI
png_process_data_skip(png_structrp png_ptr)
{
/* TODO: Deprecate and remove this API.
* Somewhere the implementation of this seems to have been lost,
* or abandoned. It was only to support some internal back-door access
* to png_struct) in libpng-1.4.x.
*/
/* TODO: Deprecate and remove this API.
* Somewhere the implementation of this seems to have been lost,
* or abandoned. It was only to support some internal back-door access
* to png_struct) in libpng-1.4.x.
*/
png_app_warning(png_ptr,
"png_process_data_skip is not implemented in any current version of libpng");
return 0;
@ -410,7 +410,7 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
{
PNG_PUSH_SAVE_BUFFER_IF_FULL
png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length,
PNG_HANDLE_CHUNK_AS_DEFAULT);
PNG_HANDLE_CHUNK_AS_DEFAULT);
}
png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
@ -521,7 +521,7 @@ png_push_save_buffer(png_structrp png_ptr)
void /* PRIVATE */
png_push_restore_buffer(png_structrp png_ptr, png_bytep buffer,
png_size_t buffer_length)
png_size_t buffer_length)
{
png_ptr->current_buffer = buffer;
png_ptr->current_buffer_size = buffer_length;
@ -624,7 +624,7 @@ png_push_read_IDAT(png_structrp png_ptr)
void /* PRIVATE */
png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
png_size_t buffer_length)
png_size_t buffer_length)
{
/* The caller checks for a non-zero buffer length. */
if (!(buffer_length > 0) || buffer == NULL)
@ -782,7 +782,7 @@ png_push_process_row(png_structrp png_ptr)
{
if (png_ptr->pass < 6)
png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
png_ptr->transformations);
png_ptr->transformations);
switch (png_ptr->pass)
{
@ -1044,7 +1044,7 @@ png_push_have_row(png_structrp png_ptr, png_bytep row)
{
if (png_ptr->row_fn != NULL)
(*(png_ptr->row_fn))(png_ptr, row, png_ptr->row_number,
(int)png_ptr->pass);
(int)png_ptr->pass);
}
#ifdef PNG_READ_INTERLACING_SUPPORTED

32
pngpriv.h
View File

@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* Last changed in libpng 1.6.22 [May 26, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
@ -420,10 +420,10 @@
# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
*/
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.
*/
# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
# include <fp.h>
# endif
@ -431,9 +431,9 @@
# include <math.h>
# endif
# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
*/
/* Amiga SAS/C: We must include builtin FPU functions when compiling using
* MATH=68881
*/
# include <m68881.h>
# endif
#endif
@ -1025,7 +1025,7 @@ PNG_INTERNAL_FUNCTION(void,png_write_sBIT,(png_structrp png_ptr,
#ifdef PNG_WRITE_cHRM_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_write_cHRM_fixed,(png_structrp png_ptr,
const png_xy *xy), PNG_EMPTY);
/* The xy value must have been previously validated */
/* The xy value must have been previously validated */
#endif
#ifdef PNG_WRITE_sRGB_SUPPORTED
@ -1174,6 +1174,7 @@ PNG_INTERNAL_FUNCTION(void,png_do_write_interlace,(png_row_infop row_info,
PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop
row_info, png_bytep row, png_const_bytep prev_row, int filter),PNG_EMPTY);
#if PNG_ARM_NEON_OPT > 0
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_neon,(png_row_infop row_info,
png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_neon,(png_row_infop
@ -1188,6 +1189,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
#endif
/* Choose the best filter to use and filter the row data */
PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
@ -1413,7 +1415,7 @@ PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr,
PNG_INTERNAL_FUNCTION(void,png_push_have_end,(png_structrp png_ptr,
png_inforp info_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_have_row,(png_structrp png_ptr,
png_bytep row),PNG_EMPTY);
png_bytep row),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_push_read_end,(png_structrp png_ptr,
png_inforp info_ptr),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_process_some_data,(png_structrp png_ptr,
@ -1452,13 +1454,13 @@ PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr,
PNG_INTERNAL_FUNCTION(void,png_colorspace_sync_info,(png_const_structrp png_ptr,
png_inforp info_ptr), PNG_EMPTY);
/* Synchronize the info 'valid' flags with the colorspace */
/* Synchronize the info 'valid' flags with the colorspace */
PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr,
png_inforp info_ptr), PNG_EMPTY);
/* Copy the png_struct colorspace to the info_struct and call the above to
* synchronize the flags. Checks for NULL info_ptr and does nothing.
*/
/* Copy the png_struct colorspace to the info_struct and call the above to
* synchronize the flags. Checks for NULL info_ptr and does nothing.
*/
#endif
/* Added at libpng version 1.4.0 */
@ -1913,8 +1915,10 @@ PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr,
* the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in
* CFLAGS in place of CPPFLAGS *and* uses symbol prefixing.
*/
# if PNG_ARM_NEON_OPT > 0
PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
(png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
# endif
#endif
PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr,

250
pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.6.23 [June 9, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
@ -28,10 +28,10 @@ png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
{
#ifndef PNG_USER_MEM_SUPPORTED
png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
error_fn, warn_fn, NULL, NULL, NULL);
error_fn, warn_fn, NULL, NULL, NULL);
#else
return png_create_read_struct_2(user_png_ver, error_ptr, error_fn,
warn_fn, NULL, NULL, NULL);
warn_fn, NULL, NULL, NULL);
}
/* Alternate create PNG structure for reading, and allocate any memory
@ -43,7 +43,7 @@ png_create_read_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
{
png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
error_fn, warn_fn, mem_ptr, malloc_fn, free_fn);
error_fn, warn_fn, mem_ptr, malloc_fn, free_fn);
#endif /* USER_MEM */
if (png_ptr != NULL)
@ -252,7 +252,7 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
else
png_handle_unknown(png_ptr, info_ptr, length,
PNG_HANDLE_CHUNK_AS_DEFAULT);
PNG_HANDLE_CHUNK_AS_DEFAULT);
}
}
#endif /* SEQUENTIAL_READ */
@ -279,7 +279,7 @@ png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
/* New in 1.6.0 this avoids the bug of doing the initializations twice */
else
png_app_error(png_ptr,
"png_read_update_info/png_start_read_image: duplicate call");
"png_read_update_info/png_start_read_image: duplicate call");
}
}
@ -302,7 +302,7 @@ png_start_read_image(png_structrp png_ptr)
/* New in 1.6.0 this avoids the bug of doing the initializations twice */
else
png_app_error(png_ptr,
"png_start_read_image/png_read_update_info: duplicate call");
"png_start_read_image/png_read_update_info: duplicate call");
}
}
#endif /* SEQUENTIAL_READ */
@ -540,7 +540,7 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
{
if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
png_ptr->prev_row + 1, png_ptr->row_buf[0]);
png_ptr->prev_row + 1, png_ptr->row_buf[0]);
else
png_error(png_ptr, "bad adaptive filter value");
}
@ -584,7 +584,7 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
{
if (png_ptr->pass < 6)
png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
png_ptr->transformations);
png_ptr->transformations);
if (dsp_row != NULL)
png_combine_row(png_ptr, dsp_row, 1/*display*/);
@ -719,7 +719,7 @@ png_read_image(png_structrp png_ptr, png_bytepp image)
* but the caller should do it!
*/
png_warning(png_ptr, "Interlace handling should be turned on when "
"using png_read_image");
"using png_read_image");
/* Make sure this is set correctly */
png_ptr->num_rows = png_ptr->height;
}
@ -779,8 +779,8 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
/* Report invalid palette index; added at libng-1.5.10 */
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
png_ptr->num_palette_max > png_ptr->num_palette)
png_benign_error(png_ptr, "Read palette index exceeding num_palette");
png_ptr->num_palette_max > png_ptr->num_palette)
png_benign_error(png_ptr, "Read palette index exceeding num_palette");
#endif
do
@ -919,7 +919,7 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
else
png_handle_unknown(png_ptr, info_ptr, length,
PNG_HANDLE_CHUNK_AS_DEFAULT);
PNG_HANDLE_CHUNK_AS_DEFAULT);
} while ((png_ptr->mode & PNG_HAVE_IEND) == 0);
}
#endif /* SEQUENTIAL_READ */
@ -1030,8 +1030,7 @@ png_set_read_status_fn(png_structrp png_ptr, png_read_status_ptr read_row_fn)
#ifdef PNG_INFO_IMAGE_SUPPORTED
void PNGAPI
png_read_png(png_structrp png_ptr, png_inforp info_ptr,
int transforms,
voidp params)
int transforms, voidp params)
{
if (png_ptr == NULL || info_ptr == NULL)
return;
@ -1307,7 +1306,7 @@ png_image_read_init(png_imagep image)
if (info_ptr != NULL)
{
png_controlp control = png_voidcast(png_controlp,
png_malloc_warn(png_ptr, (sizeof *control)));
png_malloc_warn(png_ptr, (sizeof *control)));
if (control != NULL)
{
@ -1470,12 +1469,12 @@ png_image_begin_read_from_stdio(png_imagep image, FILE* file)
else
return png_image_error(image,
"png_image_begin_read_from_stdio: invalid argument");
"png_image_begin_read_from_stdio: invalid argument");
}
else if (image != NULL)
return png_image_error(image,
"png_image_begin_read_from_stdio: incorrect PNG_IMAGE_VERSION");
"png_image_begin_read_from_stdio: incorrect PNG_IMAGE_VERSION");
return 0;
}
@ -1508,12 +1507,12 @@ png_image_begin_read_from_file(png_imagep image, const char *file_name)
else
return png_image_error(image,
"png_image_begin_read_from_file: invalid argument");
"png_image_begin_read_from_file: invalid argument");
}
else if (image != NULL)
return png_image_error(image,
"png_image_begin_read_from_file: incorrect PNG_IMAGE_VERSION");
"png_image_begin_read_from_file: incorrect PNG_IMAGE_VERSION");
return 0;
}
@ -1550,7 +1549,7 @@ png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need)
}
int PNGAPI png_image_begin_read_from_memory(png_imagep image,
png_const_voidp memory, png_size_t size)
png_const_voidp memory, png_size_t size)
{
if (image != NULL && image->version == PNG_IMAGE_VERSION)
{
@ -1573,12 +1572,12 @@ int PNGAPI png_image_begin_read_from_memory(png_imagep image,
else
return png_image_error(image,
"png_image_begin_read_from_memory: invalid argument");
"png_image_begin_read_from_memory: invalid argument");
}
else if (image != NULL)
return png_image_error(image,
"png_image_begin_read_from_memory: incorrect PNG_IMAGE_VERSION");
"png_image_begin_read_from_memory: incorrect PNG_IMAGE_VERSION");
return 0;
}
@ -1624,12 +1623,12 @@ png_image_skip_unused_chunks(png_structrp png_ptr)
* IHDR, PLTE, tRNS, IDAT, and IEND chunks.
*/
png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_NEVER,
NULL, -1);
NULL, -1);
/* But do not ignore image data handling chunks */
png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_AS_DEFAULT,
chunks_to_process, (int)/*SAFE*/(sizeof chunks_to_process)/5);
}
chunks_to_process, (int)/*SAFE*/(sizeof chunks_to_process)/5);
}
}
# define PNG_SKIP_CHUNKS(p) png_image_skip_unused_chunks(p)
@ -1696,7 +1695,7 @@ decode_gamma(png_image_read_control *display, png_uint_32 value, int encoding)
#ifdef __GNUC__
default:
png_error(display->image->opaque->png_ptr,
"unexpected encoding (internal error)");
"unexpected encoding (internal error)");
#endif
}
@ -1705,8 +1704,8 @@ decode_gamma(png_image_read_control *display, png_uint_32 value, int encoding)
static png_uint_32
png_colormap_compose(png_image_read_control *display,
png_uint_32 foreground, int foreground_encoding, png_uint_32 alpha,
png_uint_32 background, int encoding)
png_uint_32 foreground, int foreground_encoding, png_uint_32 alpha,
png_uint_32 background, int encoding)
{
/* The file value is composed on the background, the background has the given
* encoding and so does the result, the file is encoded with P_FILE and the
@ -1742,14 +1741,14 @@ png_colormap_compose(png_image_read_control *display,
*/
static void
png_create_colormap_entry(png_image_read_control *display,
png_uint_32 ip, png_uint_32 red, png_uint_32 green, png_uint_32 blue,
png_uint_32 alpha, int encoding)
png_uint_32 ip, png_uint_32 red, png_uint_32 green, png_uint_32 blue,
png_uint_32 alpha, int encoding)
{
png_imagep image = display->image;
const int output_encoding = (image->format & PNG_FORMAT_FLAG_LINEAR) != 0 ?
P_LINEAR : P_sRGB;
P_LINEAR : P_sRGB;
const int convert_to_Y = (image->format & PNG_FORMAT_FLAG_COLOR) == 0 &&
(red != green || green != blue);
(red != green || green != blue);
if (ip > 255)
png_error(image->opaque->png_ptr, "color-map index out of range");
@ -2029,7 +2028,7 @@ make_ga_colormap(png_image_read_control *display)
for (g=0; g<6; ++g)
png_create_colormap_entry(display, i++, g*51, g*51, g*51, a*51,
P_sRGB);
P_sRGB);
}
return i;
@ -2053,7 +2052,7 @@ make_rgb_colormap(png_image_read_control *display)
for (b=0; b<6; ++b)
png_create_colormap_entry(display, i++, r*51, g*51, b*51, 255,
P_sRGB);
P_sRGB);
}
}
@ -2105,7 +2104,7 @@ png_image_read_colormap(png_voidp argument)
else if (display->background == NULL /* no way to remove it */)
png_error(png_ptr,
"a background color must be supplied to remove alpha/transparency");
"background color must be supplied to remove alpha/transparency");
/* Get a copy of the background color (this avoids repeating the checks
* below.) The encoding is 8-bit sRGB or 16-bit linear, depending on the
@ -2200,7 +2199,7 @@ png_image_read_colormap(png_voidp argument)
*/
if (i != trans)
png_create_colormap_entry(display, i, val, val, val, 255,
P_FILE/*8-bit with file gamma*/);
P_FILE/*8-bit with file gamma*/);
/* Else this entry is transparent. The colors don't matter if
* there is an alpha channel (back_alpha == 0), but it does no
@ -2212,7 +2211,7 @@ png_image_read_colormap(png_voidp argument)
*/
else
png_create_colormap_entry(display, i, back_r, back_g, back_b,
back_alpha, output_encoding);
back_alpha, output_encoding);
}
/* We need libpng to preserve the original encoding. */
@ -2277,7 +2276,7 @@ png_image_read_colormap(png_voidp argument)
* matches.
*/
png_create_colormap_entry(display, gray, back_g, back_g,
back_g, 65535, P_LINEAR);
back_g, 65535, P_LINEAR);
}
/* The background passed to libpng, however, must be the
@ -2291,8 +2290,8 @@ png_image_read_colormap(png_voidp argument)
* doesn't.
*/
png_set_background_fixed(png_ptr, &c,
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
output_processing = PNG_CMAP_NONE;
break;
@ -2322,7 +2321,7 @@ png_image_read_colormap(png_voidp argument)
* background color at full precision.
*/
png_create_colormap_entry(display, 254, back_r, back_g, back_b,
back_alpha, output_encoding);
back_alpha, output_encoding);
}
else
@ -2390,7 +2389,7 @@ png_image_read_colormap(png_voidp argument)
/* And make sure the corresponding palette entry matches. */
png_create_colormap_entry(display, gray, back_g, back_g,
back_g, 65535, P_LINEAR);
back_g, 65535, P_LINEAR);
}
/* The background passed to libpng, however, must be the sRGB
@ -2400,8 +2399,8 @@ png_image_read_colormap(png_voidp argument)
c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
png_set_background_fixed(png_ptr, &c,
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
output_processing = PNG_CMAP_NONE;
}
@ -2421,7 +2420,7 @@ png_image_read_colormap(png_voidp argument)
{
png_uint_32 gray = (i * 256 + 115) / 231;
png_create_colormap_entry(display, i++, gray, gray, gray,
255, P_sRGB);
255, P_sRGB);
}
/* NOTE: this preserves the full precision of the application
@ -2430,13 +2429,13 @@ png_image_read_colormap(png_voidp argument)
background_index = i;
png_create_colormap_entry(display, i++, back_r, back_g, back_b,
#ifdef __COVERITY__
/* Coverity claims that output_encoding cannot be 2 (P_LINEAR)
* here.
*/ 255U,
/* Coverity claims that output_encoding
* cannot be 2 (P_LINEAR) here.
*/ 255U,
#else
output_encoding == P_LINEAR ? 65535U : 255U,
output_encoding == P_LINEAR ? 65535U : 255U,
#endif
output_encoding);
output_encoding);
/* For non-opaque input composite on the sRGB background - this
* requires inverting the encoding for each component. The input
@ -2474,9 +2473,9 @@ png_image_read_colormap(png_voidp argument)
png_uint_32 gray = png_sRGB_table[g*51] * alpha;
png_create_colormap_entry(display, i++,
PNG_sRGB_FROM_LINEAR(gray + back_rx),
PNG_sRGB_FROM_LINEAR(gray + back_gx),
PNG_sRGB_FROM_LINEAR(gray + back_bx), 255, P_sRGB);
PNG_sRGB_FROM_LINEAR(gray + back_rx),
PNG_sRGB_FROM_LINEAR(gray + back_gx),
PNG_sRGB_FROM_LINEAR(gray + back_bx), 255, P_sRGB);
}
}
@ -2502,7 +2501,7 @@ png_image_read_colormap(png_voidp argument)
* png_set_tRNS_to_alpha before png_set_background_fixed.
*/
png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE, -1,
-1);
-1);
data_encoding = P_sRGB;
/* The output will now be one or two 8-bit gray or gray+alpha
@ -2578,13 +2577,13 @@ png_image_read_colormap(png_voidp argument)
gray = png_sRGB_table[gray]; /* now P_LINEAR */
gray = PNG_DIV257(png_gamma_16bit_correct(gray,
png_ptr->colorspace.gamma)); /* now P_FILE */
png_ptr->colorspace.gamma)); /* now P_FILE */
/* And make sure the corresponding palette entry contains
* exactly the required sRGB value.
*/
png_create_colormap_entry(display, gray, back_g, back_g,
back_g, 0/*unused*/, output_encoding);
back_g, 0/*unused*/, output_encoding);
}
else if (output_encoding == P_LINEAR)
@ -2609,8 +2608,8 @@ png_image_read_colormap(png_voidp argument)
*/
expand_tRNS = 1;
png_set_background_fixed(png_ptr, &c,
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
}
output_processing = PNG_CMAP_NONE;
@ -2644,7 +2643,7 @@ png_image_read_colormap(png_voidp argument)
/* Add a transparent entry. */
png_create_colormap_entry(display, cmap_entries, 255, 255,
255, 0, P_sRGB);
255, 0, P_sRGB);
/* This is stored as the background index for the processing
* algorithm.
@ -2665,7 +2664,7 @@ png_image_read_colormap(png_voidp argument)
*/
for (b=0; b<256; b = (b << 1) | 0x7f)
png_create_colormap_entry(display, cmap_entries++,
r, g, b, 128, P_sRGB);
r, g, b, 128, P_sRGB);
}
}
@ -2692,7 +2691,7 @@ png_image_read_colormap(png_voidp argument)
cmap_entries = make_rgb_colormap(display);
png_create_colormap_entry(display, cmap_entries, back_r,
back_g, back_b, 0/*unused*/, output_encoding);
back_g, back_b, 0/*unused*/, output_encoding);
if (output_encoding == P_LINEAR)
{
@ -2714,9 +2713,9 @@ png_image_read_colormap(png_voidp argument)
* index.
*/
if (memcmp((png_const_bytep)display->colormap +
sample_size * cmap_entries,
(png_const_bytep)display->colormap +
sample_size * PNG_RGB_INDEX(r,g,b),
sample_size * cmap_entries,
(png_const_bytep)display->colormap +
sample_size * PNG_RGB_INDEX(r,g,b),
sample_size) != 0)
{
/* The background color must be added. */
@ -2734,13 +2733,13 @@ png_image_read_colormap(png_voidp argument)
*/
for (b=0; b<256; b = (b << 1) | 0x7f)
png_create_colormap_entry(display, cmap_entries++,
png_colormap_compose(display, r, P_sRGB, 128,
back_r, output_encoding),
png_colormap_compose(display, g, P_sRGB, 128,
back_g, output_encoding),
png_colormap_compose(display, b, P_sRGB, 128,
back_b, output_encoding),
0/*unused*/, output_encoding);
png_colormap_compose(display, r, P_sRGB, 128,
back_r, output_encoding),
png_colormap_compose(display, g, P_sRGB, 128,
back_g, output_encoding),
png_colormap_compose(display, b, P_sRGB, 128,
back_b, output_encoding),
0/*unused*/, output_encoding);
}
}
@ -2758,8 +2757,8 @@ png_image_read_colormap(png_voidp argument)
c.blue = (png_uint_16)back_b;
png_set_background_fixed(png_ptr, &c,
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
output_processing = PNG_CMAP_RGB;
}
@ -2811,7 +2810,7 @@ png_image_read_colormap(png_voidp argument)
{
if (trans[i] == 0)
png_create_colormap_entry(display, i, back_r, back_g,
back_b, 0, output_encoding);
back_b, 0, output_encoding);
else
{
@ -2819,22 +2818,22 @@ png_image_read_colormap(png_voidp argument)
* on the sRGB color in 'back'.
*/
png_create_colormap_entry(display, i,
png_colormap_compose(display, colormap[i].red, P_FILE,
trans[i], back_r, output_encoding),
png_colormap_compose(display, colormap[i].green, P_FILE,
trans[i], back_g, output_encoding),
png_colormap_compose(display, colormap[i].blue, P_FILE,
trans[i], back_b, output_encoding),
output_encoding == P_LINEAR ? trans[i] * 257U :
trans[i],
output_encoding);
png_colormap_compose(display, colormap[i].red,
P_FILE, trans[i], back_r, output_encoding),
png_colormap_compose(display, colormap[i].green,
P_FILE, trans[i], back_g, output_encoding),
png_colormap_compose(display, colormap[i].blue,
P_FILE, trans[i], back_b, output_encoding),
output_encoding == P_LINEAR ? trans[i] * 257U :
trans[i],
output_encoding);
}
}
else
png_create_colormap_entry(display, i, colormap[i].red,
colormap[i].green, colormap[i].blue,
i < num_trans ? trans[i] : 255U, P_FILE/*8-bit*/);
colormap[i].green, colormap[i].blue,
i < num_trans ? trans[i] : 255U, P_FILE/*8-bit*/);
}
/* The PNG data may have indices packed in fewer than 8 bits, it
@ -2924,7 +2923,7 @@ static int
png_image_read_and_map(png_voidp argument)
{
png_image_read_control *display = png_voidcast(png_image_read_control*,
argument);
argument);
png_imagep image = display->image;
png_structrp png_ptr = image->opaque->png_ptr;
int passes;
@ -3061,7 +3060,7 @@ png_image_read_and_map(png_voidp argument)
if (alpha >= 196)
*outrow = PNG_RGB_INDEX(inrow[0], inrow[1],
inrow[2]);
inrow[2]);
else if (alpha < 64)
*outrow = PNG_CMAP_RGB_ALPHA_BACKGROUND;
@ -3113,7 +3112,7 @@ static int
png_image_read_colormapped(png_voidp argument)
{
png_image_read_control *display = png_voidcast(png_image_read_control*,
argument);
argument);
png_imagep image = display->image;
png_controlp control = image->opaque;
png_structrp png_ptr = control->png_ptr;
@ -3246,7 +3245,7 @@ static int
png_image_read_composite(png_voidp argument)
{
png_image_read_control *display = png_voidcast(png_image_read_control*,
argument);
argument);
png_imagep image = display->image;
png_structrp png_ptr = image->opaque->png_ptr;
int passes;
@ -3373,7 +3372,7 @@ static int
png_image_read_background(png_voidp argument)
{
png_image_read_control *display = png_voidcast(png_image_read_control*,
argument);
argument);
png_imagep image = display->image;
png_structrp png_ptr = image->opaque->png_ptr;
png_inforp info_ptr = image->opaque->info_ptr;
@ -3433,8 +3432,7 @@ png_image_read_background(png_voidp argument)
for (pass = 0; pass < passes; ++pass)
{
png_bytep row = png_voidcast(png_bytep,
display->first_row);
png_bytep row = png_voidcast(png_bytep, display->first_row);
unsigned int startx, stepx, stepy;
png_uint_32 y;
@ -3462,7 +3460,7 @@ png_image_read_background(png_voidp argument)
for (; y<height; y += stepy)
{
png_bytep inrow = png_voidcast(png_bytep,
display->local_row);
display->local_row);
png_bytep outrow = first_row + y * step_row;
png_const_bytep end_row = outrow + width;
@ -3507,7 +3505,7 @@ png_image_read_background(png_voidp argument)
for (; y<height; y += stepy)
{
png_bytep inrow = png_voidcast(png_bytep,
display->local_row);
display->local_row);
png_bytep outrow = first_row + y * step_row;
png_const_bytep end_row = outrow + width;
@ -3554,7 +3552,7 @@ png_image_read_background(png_voidp argument)
*/
{
png_uint_16p first_row = png_voidcast(png_uint_16p,
display->first_row);
display->first_row);
/* The division by two is safe because the caller passed in a
* stride which was multiplied by 2 (below) to get row_bytes.
*/
@ -3604,7 +3602,7 @@ png_image_read_background(png_voidp argument)
/* Read the row, which is packed: */
png_read_row(png_ptr, png_voidcast(png_bytep,
display->local_row), NULL);
display->local_row), NULL);
inrow = png_voidcast(png_const_uint_16p, display->local_row);
/* Now do the pre-multiplication on each pixel in this row.
@ -3653,7 +3651,7 @@ static int
png_image_read_direct(png_voidp argument)
{
png_image_read_control *display = png_voidcast(png_image_read_control*,
argument);
argument);
png_imagep image = display->image;
png_structrp png_ptr = image->opaque->png_ptr;
png_inforp info_ptr = image->opaque->info_ptr;
@ -3704,7 +3702,7 @@ png_image_read_direct(png_voidp argument)
do_local_background = 1/*maybe*/;
png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE,
PNG_RGB_TO_GRAY_DEFAULT, PNG_RGB_TO_GRAY_DEFAULT);
PNG_RGB_TO_GRAY_DEFAULT, PNG_RGB_TO_GRAY_DEFAULT);
}
change &= ~PNG_FORMAT_FLAG_COLOR;
@ -3763,7 +3761,7 @@ png_image_read_direct(png_voidp argument)
* final value.
*/
if (png_muldiv(&gtest, output_gamma, png_ptr->colorspace.gamma,
PNG_FP_1) != 0 && png_gamma_significant(gtest) == 0)
PNG_FP_1) != 0 && png_gamma_significant(gtest) == 0)
do_local_background = 0;
else if (mode == PNG_ALPHA_STANDARD)
@ -3826,8 +3824,8 @@ png_image_read_direct(png_voidp argument)
* pixels.
*/
png_set_background_fixed(png_ptr, &c,
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
0/*gamma: not used*/);
}
else /* compose on row: implemented below. */
@ -4077,7 +4075,7 @@ png_image_read_direct(png_voidp argument)
int PNGAPI
png_image_finish_read(png_imagep image, png_const_colorp background,
void *buffer, png_int_32 row_stride, void *colormap)
void *buffer, png_int_32 row_stride, void *colormap)
{
if (image != NULL && image->version == PNG_IMAGE_VERSION)
{
@ -4087,6 +4085,12 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
*/
const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
/* The following checks just the 'row_stride' calculation to ensure it
* fits in a signed 32-bit value. Because channels/components can be
* either 1 or 2 bytes in size the length of a row can still overflow 32
* bits; this is just to verify that the 'row_stride' argument can be
* represented.
*/
if (image->width <= 0x7FFFFFFFU/channels) /* no overflow */
{
png_uint_32 check;
@ -4101,13 +4105,30 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
else
check = row_stride;
/* This verifies 'check', the absolute value of the actual stride
* passed in and detects overflow in the application calculation (i.e.
* if the app did actually pass in a non-zero 'row_stride'.
*/
if (image->opaque != NULL && buffer != NULL && check >= png_row_stride)
{
/* Now check for overflow of the image buffer calculation; this
* limits the whole image size to 32 bits for API compatibility with
* the current, 32-bit, PNG_IMAGE_BUFFER_SIZE macro.
*
* The PNG_IMAGE_BUFFER_SIZE macro is:
*
* (PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)*height*(row_stride))
*
* And the component size is always 1 or 2, so make sure that the
* number of *bytes* that the application is saying are available
* does actually fit into a 32-bit number.
*
* NOTE: this will be changed in 1.7 because PNG_IMAGE_BUFFER_SIZE
* will be changed to use png_alloc_size_t; bigger images can be
* accomodated on 64-bit systems.
*/
if (image->height <= 0xFFFFFFFF/png_row_stride)
if (image->height <=
0xFFFFFFFFU/PNG_IMAGE_PIXEL_COMPONENT_SIZE(image->format)/check)
{
if ((image->format & PNG_FORMAT_FLAG_COLORMAP) == 0 ||
(image->colormap_entries > 0 && colormap != NULL))
@ -4127,15 +4148,16 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
* all the setup has already been done.
*/
if ((image->format & PNG_FORMAT_FLAG_COLORMAP) != 0)
result = png_safe_execute(image,
png_image_read_colormap, &display) &&
png_safe_execute(image,
png_image_read_colormapped, &display);
result =
png_safe_execute(image,
png_image_read_colormap, &display) &&
png_safe_execute(image,
png_image_read_colormapped, &display);
else
result =
png_safe_execute(image,
png_image_read_direct, &display);
png_image_read_direct, &display);
png_image_free(image);
return result;
@ -4143,27 +4165,27 @@ png_image_finish_read(png_imagep image, png_const_colorp background,
else
return png_image_error(image,
"png_image_finish_read[color-map]: no color-map");
"png_image_finish_read[color-map]: no color-map");
}
else
return png_image_error(image,
"png_image_finish_read: image too large");
"png_image_finish_read: image too large");
}
else
return png_image_error(image,
"png_image_finish_read: invalid argument");
"png_image_finish_read: invalid argument");
}
else
return png_image_error(image,
"png_image_finish_read: row_stride too large");
"png_image_finish_read: row_stride too large");
}
else if (image != NULL)
return png_image_error(image,
"png_image_finish_read: damaged PNG_IMAGE_VERSION");
"png_image_finish_read: damaged PNG_IMAGE_VERSION");
return 0;
}

6
pngrio.c
View File

@ -1,8 +1,8 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.6.17 [March 26, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -85,7 +85,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
*/
void PNGAPI
png_set_read_fn(png_structrp png_ptr, png_voidp io_ptr,
png_rw_ptr read_data_fn)
png_rw_ptr read_data_fn)
{
if (png_ptr == NULL)
return;

50
pngrtran.c
View File

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.6.22 [May 26, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
@ -48,7 +48,7 @@ png_set_crc_action(png_structrp png_ptr, int crit_action, int ancil_action)
case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
png_warning(png_ptr,
"Can't discard critical data on CRC error");
"Can't discard critical data on CRC error");
case PNG_CRC_ERROR_QUIT: /* Error/quit */
case PNG_CRC_DEFAULT:
@ -101,7 +101,7 @@ png_rtran_ok(png_structrp png_ptr, int need_IHDR)
{
if ((png_ptr->flags & PNG_FLAG_ROW_INIT) != 0)
png_app_error(png_ptr,
"invalid after png_start_read_image or png_read_update_info");
"invalid after png_start_read_image or png_read_update_info");
else if (need_IHDR && (png_ptr->mode & PNG_HAVE_IHDR) == 0)
png_app_error(png_ptr, "invalid before the PNG header has been read");
@ -209,7 +209,7 @@ png_set_strip_alpha(png_structrp png_ptr)
#if defined(PNG_READ_ALPHA_MODE_SUPPORTED) || defined(PNG_READ_GAMMA_SUPPORTED)
static png_fixed_point
translate_gamma_flags(png_structrp png_ptr, png_fixed_point output_gamma,
int is_screen)
int is_screen)
{
/* Check for flag values. The main reason for having the old Mac value as a
* flag is that it is pretty near impossible to work out what the correct
@ -273,7 +273,7 @@ convert_gamma_value(png_structrp png_ptr, double output_gamma)
#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
void PNGFAPI
png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
png_fixed_point output_gamma)
png_fixed_point output_gamma)
{
int compose = 0;
png_fixed_point file_gamma;
@ -377,7 +377,7 @@ png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
if ((png_ptr->transformations & PNG_COMPOSE) != 0)
png_error(png_ptr,
"conflicting calls to set alpha mode and background");
"conflicting calls to set alpha mode and background");
png_ptr->transformations |= PNG_COMPOSE;
}
@ -388,7 +388,7 @@ void PNGAPI
png_set_alpha_mode(png_structrp png_ptr, int mode, double output_gamma)
{
png_set_alpha_mode_fixed(png_ptr, mode, convert_gamma_value(png_ptr,
output_gamma));
output_gamma));
}
# endif
#endif
@ -802,7 +802,7 @@ png_set_quantize(png_structrp png_ptr, png_colorp palette,
#ifdef PNG_READ_GAMMA_SUPPORTED
void PNGFAPI
png_set_gamma_fixed(png_structrp png_ptr, png_fixed_point scrn_gamma,
png_fixed_point file_gamma)
png_fixed_point file_gamma)
{
png_debug(1, "in png_set_gamma_fixed");
@ -844,7 +844,7 @@ void PNGAPI
png_set_gamma(png_structrp png_ptr, double scrn_gamma, double file_gamma)
{
png_set_gamma_fixed(png_ptr, convert_gamma_value(png_ptr, scrn_gamma),
convert_gamma_value(png_ptr, file_gamma));
convert_gamma_value(png_ptr, file_gamma));
}
# endif /* FLOATING_POINT */
#endif /* READ_GAMMA */
@ -990,7 +990,7 @@ png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
* that it just worked and get a memory overwrite.
*/
png_error(png_ptr,
"Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
"Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
/* png_ptr->transformations &= ~PNG_RGB_TO_GRAY; */
}
@ -1017,7 +1017,7 @@ png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
{
if (red >= 0 && green >= 0)
png_app_warning(png_ptr,
"ignoring out of range rgb_to_gray coefficients");
"ignoring out of range rgb_to_gray coefficients");
/* Use the defaults, from the cHRM chunk if set, else the historical
* values which are close to the sRGB/HDTV/ITU-Rec 709 values. See
@ -1026,7 +1026,7 @@ png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
* something has already provided a default.
*/
if (png_ptr->rgb_to_gray_red_coeff == 0 &&
png_ptr->rgb_to_gray_green_coeff == 0)
png_ptr->rgb_to_gray_green_coeff == 0)
{
png_ptr->rgb_to_gray_red_coeff = 6968;
png_ptr->rgb_to_gray_green_coeff = 23434;
@ -1043,10 +1043,10 @@ png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
void PNGAPI
png_set_rgb_to_gray(png_structrp png_ptr, int error_action, double red,
double green)
double green)
{
png_set_rgb_to_gray_fixed(png_ptr, error_action,
png_fixed(png_ptr, red, "rgb to gray red coefficient"),
png_fixed(png_ptr, red, "rgb to gray red coefficient"),
png_fixed(png_ptr, green, "rgb to gray green coefficient"));
}
#endif /* FLOATING POINT */
@ -1303,7 +1303,7 @@ png_init_read_transformations(png_structrp png_ptr)
{
if (png_ptr->screen_gamma != 0) /* screen set too */
gamma_correction = png_gamma_threshold(png_ptr->colorspace.gamma,
png_ptr->screen_gamma);
png_ptr->screen_gamma);
else
/* Assume the output matches the input; a long time default behavior
@ -1584,7 +1584,7 @@ png_init_read_transformations(png_structrp png_ptr)
*/
if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0)
png_warning(png_ptr,
"libpng does not support gamma+background+rgb_to_gray");
"libpng does not support gamma+background+rgb_to_gray");
if ((png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) != 0)
{
@ -1620,13 +1620,13 @@ png_init_read_transformations(png_structrp png_ptr)
case PNG_BACKGROUND_GAMMA_FILE:
g = png_reciprocal(png_ptr->colorspace.gamma);
gs = png_reciprocal2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma);
png_ptr->screen_gamma);
break;
case PNG_BACKGROUND_GAMMA_UNIQUE:
g = png_reciprocal(png_ptr->background_gamma);
gs = png_reciprocal2(png_ptr->background_gamma,
png_ptr->screen_gamma);
png_ptr->screen_gamma);
break;
default:
g = PNG_FP_1; /* back_1 */
@ -1654,11 +1654,11 @@ png_init_read_transformations(png_structrp png_ptr)
if (png_gamma_significant(g) != 0)
{
back_1.red = png_gamma_8bit_correct(png_ptr->background.red,
g);
g);
back_1.green = png_gamma_8bit_correct(
png_ptr->background.green, g);
png_ptr->background.green, g);
back_1.blue = png_gamma_8bit_correct(png_ptr->background.blue,
g);
g);
}
else
@ -1729,7 +1729,7 @@ png_init_read_transformations(png_structrp png_ptr)
case PNG_BACKGROUND_GAMMA_FILE:
g = png_reciprocal(png_ptr->colorspace.gamma);
gs = png_reciprocal2(png_ptr->colorspace.gamma,
png_ptr->screen_gamma);
png_ptr->screen_gamma);
break;
case PNG_BACKGROUND_GAMMA_UNIQUE:
@ -4195,7 +4195,7 @@ png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
*/
static void
png_do_expand_palette(png_row_infop row_info, png_bytep row,
png_const_colorp palette, png_const_bytep trans_alpha, int num_trans)
png_const_colorp palette, png_const_bytep trans_alpha, int num_trans)
{
int shift, value;
png_bytep sp, dp;
@ -4502,7 +4502,7 @@ png_do_expand(png_row_infop row_info, png_bytep row,
row_info->channels = 2;
row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
row_width);
row_width);
}
}
else if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
@ -4762,7 +4762,7 @@ png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info)
(row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
png_do_strip_channel(row_info, png_ptr->row_buf + 1,
0 /* at_start == false, because SWAP_ALPHA happens later */);
0 /* at_start == false, because SWAP_ALPHA happens later */);
#endif
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED

192
pngrutil.c
View File

@ -1,8 +1,8 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.6.20 [December 3, 2014]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -90,7 +90,7 @@ png_get_int_32)(png_const_bytep buf)
uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
if ((uval & 0x80000000) == 0) /* no overflow */
return -(png_int_32)uval;
return -(png_int_32)uval;
/* The following has to be safe; this function only gets called on PNG data
* and if we get here that data is invalid. 0 is the most safe value and
* if not then an attacker would surely just generate a PNG with 0 instead.
@ -590,6 +590,7 @@ png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish,
}
}
#if defined(PNG_READ_zTXt_SUPPORTED) || defined (PNG_READ_iTXt_SUPPORTED)
/*
* Decompress trailing data in a chunk. The assumption is that read_buffer
* points at an allocated area holding the contents of a chunk with a
@ -599,9 +600,9 @@ png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish,
*/
static int
png_decompress_chunk(png_structrp png_ptr,
png_uint_32 chunklength, png_uint_32 prefix_size,
png_alloc_size_t *newlength /* must be initialized to the maximum! */,
int terminate /*add a '\0' to the end of the uncompressed data*/)
png_uint_32 chunklength, png_uint_32 prefix_size,
png_alloc_size_t *newlength /* must be initialized to the maximum! */,
int terminate /*add a '\0' to the end of the uncompressed data*/)
{
/* TODO: implement different limits for different types of chunk.
*
@ -638,8 +639,8 @@ png_decompress_chunk(png_structrp png_ptr,
png_uint_32 lzsize = chunklength - prefix_size;
ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
/* input: */ png_ptr->read_buffer + prefix_size, &lzsize,
/* output: */ NULL, newlength);
/* input: */ png_ptr->read_buffer + prefix_size, &lzsize,
/* output: */ NULL, newlength);
if (ret == Z_STREAM_END)
{
@ -659,15 +660,15 @@ png_decompress_chunk(png_structrp png_ptr,
*/
png_alloc_size_t new_size = *newlength;
png_alloc_size_t buffer_size = prefix_size + new_size +
(terminate != 0);
(terminate != 0);
png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr,
buffer_size));
buffer_size));
if (text != NULL)
{
ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
png_ptr->read_buffer + prefix_size, &lzsize,
text + prefix_size, newlength);
png_ptr->read_buffer + prefix_size, &lzsize,
text + prefix_size, newlength);
if (ret == Z_STREAM_END)
{
@ -754,6 +755,7 @@ png_decompress_chunk(png_structrp png_ptr,
return Z_MEM_ERROR;
}
}
#endif /* READ_zTXt || READ_iTXt */
#endif /* READ_COMPRESSED_TEXT */
#ifdef PNG_READ_iCCP_SUPPORTED
@ -762,8 +764,8 @@ png_decompress_chunk(png_structrp png_ptr,
*/
static int
png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
png_uint_32p chunk_bytes, png_bytep next_out, png_alloc_size_t *out_size,
int finish)
png_uint_32p chunk_bytes, png_bytep next_out, png_alloc_size_t *out_size,
int finish)
{
if (png_ptr->zowner == png_ptr->chunk_name)
{
@ -802,8 +804,8 @@ png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
* the available output is produced; this allows reading of truncated
* streams.
*/
ret = PNG_INFLATE(png_ptr,
*chunk_bytes > 0 ? Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH));
ret = PNG_INFLATE(png_ptr, *chunk_bytes > 0 ?
Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH));
}
while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0));
@ -1292,7 +1294,7 @@ png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
(void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy,
1/*prefer cHRM values*/);
1/*prefer cHRM values*/);
png_colorspace_sync(png_ptr, info_ptr);
}
#endif
@ -1432,8 +1434,8 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2);
png_ptr->zstream.avail_in = read_length;
(void)png_inflate_read(png_ptr, local_buffer,
(sizeof local_buffer), &length, profile_header, &size,
0/*finish: don't, because the output is too small*/);
(sizeof local_buffer), &length, profile_header, &size,
0/*finish: don't, because the output is too small*/);
if (size == 0)
{
@ -1443,14 +1445,14 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_get_uint_32(profile_header);
if (png_icc_check_length(png_ptr, &png_ptr->colorspace,
keyword, profile_length) != 0)
keyword, profile_length) != 0)
{
/* The length is apparently ok, so we can check the 132
* byte header.
*/
if (png_icc_check_header(png_ptr, &png_ptr->colorspace,
keyword, profile_length, profile_header,
png_ptr->color_type) != 0)
keyword, profile_length, profile_header,
png_ptr->color_type) != 0)
{
/* Now read the tag table; a variable size buffer is
* needed at this point, allocate one for the whole
@ -1458,20 +1460,20 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
* that none of these stuff will overflow.
*/
const png_uint_32 tag_count = png_get_uint_32(
profile_header+128);
profile_header+128);
png_bytep profile = png_read_buffer(png_ptr,
profile_length, 2/*silent*/);
profile_length, 2/*silent*/);
if (profile != NULL)
{
memcpy(profile, profile_header,
(sizeof profile_header));
(sizeof profile_header));
size = 12 * tag_count;
(void)png_inflate_read(png_ptr, local_buffer,
(sizeof local_buffer), &length,
profile + (sizeof profile_header), &size, 0);
(sizeof local_buffer), &length,
profile + (sizeof profile_header), &size, 0);
/* Still expect a buffer error because we expect
* there to be some tag data!
@ -1479,22 +1481,22 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if (size == 0)
{
if (png_icc_check_tag_table(png_ptr,
&png_ptr->colorspace, keyword, profile_length,
profile) != 0)
&png_ptr->colorspace, keyword, profile_length,
profile) != 0)
{
/* The profile has been validated for basic
* security issues, so read the whole thing in.
*/
size = profile_length - (sizeof profile_header)
- 12 * tag_count;
- 12 * tag_count;
(void)png_inflate_read(png_ptr, local_buffer,
(sizeof local_buffer), &length,
profile + (sizeof profile_header) +
12 * tag_count, &size, 1/*finish*/);
(sizeof local_buffer), &length,
profile + (sizeof profile_header) +
12 * tag_count, &size, 1/*finish*/);
if (length > 0 && !(png_ptr->flags &
PNG_FLAG_BENIGN_ERRORS_WARN))
PNG_FLAG_BENIGN_ERRORS_WARN))
errmsg = "extra compressed data";
/* But otherwise allow extra data: */
@ -1506,34 +1508,34 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
* keep going.
*/
png_chunk_warning(png_ptr,
"extra compressed data");
"extra compressed data");
}
png_crc_finish(png_ptr, length);
finished = 1;
# ifdef PNG_sRGB_SUPPORTED
# if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0
/* Check for a match against sRGB */
png_icc_set_sRGB(png_ptr,
&png_ptr->colorspace, profile,
png_ptr->zstream.adler);
# endif
&png_ptr->colorspace, profile,
png_ptr->zstream.adler);
# endif
/* Steal the profile for info_ptr. */
if (info_ptr != NULL)
{
png_free_data(png_ptr, info_ptr,
PNG_FREE_ICCP, 0);
PNG_FREE_ICCP, 0);
info_ptr->iccp_name = png_voidcast(char*,
png_malloc_base(png_ptr,
keyword_length+1));
png_malloc_base(png_ptr,
keyword_length+1));
if (info_ptr->iccp_name != NULL)
{
memcpy(info_ptr->iccp_name, keyword,
keyword_length+1);
keyword_length+1);
info_ptr->iccp_proflen =
profile_length;
profile_length;
info_ptr->iccp_profile = profile;
png_ptr->read_buffer = NULL; /*steal*/
info_ptr->free_me |= PNG_FREE_ICCP;
@ -2270,7 +2272,7 @@ png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
}
png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams,
(png_charp)units, params);
(png_charp)units, params);
png_free(png_ptr, params);
}
@ -2313,7 +2315,7 @@ png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
}
png_debug1(2, "Allocating and reading sCAL chunk data (%u bytes)",
length + 1);
length + 1);
buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
@ -2365,7 +2367,7 @@ png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
else
/* This is the (only) success case. */
png_set_sCAL_s(png_ptr, info_ptr, buffer[0],
(png_charp)buffer+1, (png_charp)buffer+heighti);
(png_charp)buffer+1, (png_charp)buffer+heighti);
}
}
#endif
@ -2465,8 +2467,8 @@ png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if (buffer == NULL)
{
png_chunk_benign_error(png_ptr, "out of memory");
return;
png_chunk_benign_error(png_ptr, "out of memory");
return;
}
png_crc_read(png_ptr, buffer, length);
@ -2573,7 +2575,7 @@ png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
* and text chunks.
*/
if (png_decompress_chunk(png_ptr, length, keyword_length+2,
&uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
&uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
{
png_text text;
@ -2713,7 +2715,7 @@ png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
* iCCP and text chunks.
*/
if (png_decompress_chunk(png_ptr, length, prefix_length,
&uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
&uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
buffer = png_ptr->read_buffer;
else
@ -2793,7 +2795,7 @@ png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length)
{
/* Do a 'warn' here - it is handled below. */
png_ptr->unknown_chunk.data = png_voidcast(png_bytep,
png_malloc_warn(png_ptr, length));
png_malloc_warn(png_ptr, length));
}
}
@ -2818,7 +2820,7 @@ png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length)
/* Handle an unknown, or known but disabled, chunk */
void /* PRIVATE */
png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
png_uint_32 length, int keep)
png_uint_32 length, int keep)
{
int handled = 0; /* the chunk was handled */
@ -2856,7 +2858,7 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
{
/* Callback to user unknown chunk handler */
int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr,
&png_ptr->unknown_chunk);
&png_ptr->unknown_chunk);
/* ret is:
* negative: An error occurred; png_chunk_error will be called.
@ -2890,9 +2892,9 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
{
png_chunk_warning(png_ptr, "Saving unknown chunk:");
png_app_warning(png_ptr,
"forcing save of an unhandled chunk;"
" please call png_set_keep_unknown_chunks");
/* with keep = PNG_HANDLE_CHUNK_IF_SAFE */
"forcing save of an unhandled chunk;"
" please call png_set_keep_unknown_chunks");
/* with keep = PNG_HANDLE_CHUNK_IF_SAFE */
}
# endif
keep = PNG_HANDLE_CHUNK_IF_SAFE;
@ -2985,7 +2987,7 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
* out; store the chunk.
*/
png_set_unknown_chunks(png_ptr, info_ptr,
&png_ptr->unknown_chunk, 1);
&png_ptr->unknown_chunk, 1);
handled = 1;
# ifdef PNG_USER_LIMITS_SUPPORTED
break;
@ -3418,8 +3420,8 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
/* Everything is aligned for png_uint_16 copies, but try for
* png_uint_32 first.
*/
if (png_isaligned(dp, png_uint_32) != 0 &&
png_isaligned(sp, png_uint_32) != 0 &&
if (png_isaligned(dp, png_uint_32) &&
png_isaligned(sp, png_uint_32) &&
bytes_to_copy % (sizeof (png_uint_32)) == 0 &&
bytes_to_jump % (sizeof (png_uint_32)) == 0)
{
@ -3539,7 +3541,7 @@ png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
#ifdef PNG_READ_INTERLACING_SUPPORTED
void /* PRIVATE */
png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
png_uint_32 transformations /* Because these may affect the byte layout */)
png_uint_32 transformations /* Because these may affect the byte layout */)
{
/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
/* Offset to next interlace block */
@ -3783,7 +3785,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
static void
png_read_filter_row_sub(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
png_const_bytep prev_row)
{
png_size_t i;
png_size_t istop = row_info->rowbytes;
@ -3801,7 +3803,7 @@ png_read_filter_row_sub(png_row_infop row_info, png_bytep row,
static void
png_read_filter_row_up(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
png_const_bytep prev_row)
{
png_size_t i;
png_size_t istop = row_info->rowbytes;
@ -3817,7 +3819,7 @@ png_read_filter_row_up(png_row_infop row_info, png_bytep row,
static void
png_read_filter_row_avg(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
png_const_bytep prev_row)
{
png_size_t i;
png_bytep rp = row;
@ -3844,7 +3846,7 @@ png_read_filter_row_avg(png_row_infop row_info, png_bytep row,
static void
png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
png_const_bytep prev_row)
{
png_bytep rp_end = row + row_info->rowbytes;
int a, c;
@ -3892,7 +3894,7 @@ png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row,
static void
png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
png_const_bytep prev_row)
png_const_bytep prev_row)
{
int bpp = (row_info->pixel_depth + 7) >> 3;
png_bytep rp_end = row + bpp;
@ -3977,7 +3979,7 @@ png_init_filter_functions(png_structrp pp)
void /* PRIVATE */
png_read_filter_row(png_structrp pp, png_row_infop row_info, png_bytep row,
png_const_bytep prev_row, int filter)
png_const_bytep prev_row, int filter)
{
/* OPTIMIZATION: DO NOT MODIFY THIS FUNCTION, instead #define
* PNG_FILTER_OPTIMIZATIONS to a function that overrides the generic
@ -3995,7 +3997,7 @@ png_read_filter_row(png_structrp pp, png_row_infop row_info, png_bytep row,
#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
void /* PRIVATE */
png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
png_alloc_size_t avail_out)
png_alloc_size_t avail_out)
{
/* Loop reading IDATs and decompressing the result into output[avail_out] */
png_ptr->zstream.next_out = output;
@ -4447,42 +4449,42 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
{
png_free(png_ptr, png_ptr->big_row_buf);
png_free(png_ptr, png_ptr->big_prev_row);
png_free(png_ptr, png_ptr->big_row_buf);
png_free(png_ptr, png_ptr->big_prev_row);
if (png_ptr->interlaced != 0)
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
row_bytes + 48);
if (png_ptr->interlaced != 0)
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
row_bytes + 48);
else
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
else
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
/* Use 16-byte aligned memory for row_buf with at least 16 bytes
* of padding before and after row_buf; treat prev_row similarly.
* NOTE: the alignment is to the start of the pixels, one beyond the start
* of the buffer, because of the filter byte. Prior to libpng 1.5.6 this
* was incorrect; the filter byte was aligned, which had the exact
* opposite effect of that intended.
*/
{
png_bytep temp = png_ptr->big_row_buf + 32;
int extra = (int)((temp - (png_bytep)0) & 0x0f);
png_ptr->row_buf = temp - extra - 1/*filter byte*/;
/* Use 16-byte aligned memory for row_buf with at least 16 bytes
* of padding before and after row_buf; treat prev_row similarly.
* NOTE: the alignment is to the start of the pixels, one beyond the start
* of the buffer, because of the filter byte. Prior to libpng 1.5.6 this
* was incorrect; the filter byte was aligned, which had the exact
* opposite effect of that intended.
*/
{
png_bytep temp = png_ptr->big_row_buf + 32;
int extra = (int)((temp - (png_bytep)0) & 0x0f);
png_ptr->row_buf = temp - extra - 1/*filter byte*/;
temp = png_ptr->big_prev_row + 32;
extra = (int)((temp - (png_bytep)0) & 0x0f);
png_ptr->prev_row = temp - extra - 1/*filter byte*/;
}
temp = png_ptr->big_prev_row + 32;
extra = (int)((temp - (png_bytep)0) & 0x0f);
png_ptr->prev_row = temp - extra - 1/*filter byte*/;
}
#else
/* Use 31 bytes of padding before and 17 bytes after row_buf. */
png_ptr->row_buf = png_ptr->big_row_buf + 31;
png_ptr->prev_row = png_ptr->big_prev_row + 31;
/* Use 31 bytes of padding before and 17 bytes after row_buf. */
png_ptr->row_buf = png_ptr->big_row_buf + 31;
png_ptr->prev_row = png_ptr->big_prev_row + 31;
#endif
png_ptr->old_big_row_buf_size = row_bytes + 48;
png_ptr->old_big_row_buf_size = row_bytes + 48;
}
#ifdef PNG_MAX_MALLOC_64K

178
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.6.23 [June 9, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2016 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.)
@ -104,14 +104,14 @@ png_set_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
double green_x, double green_y, double blue_x, double blue_y)
{
png_set_cHRM_fixed(png_ptr, info_ptr,
png_fixed(png_ptr, white_x, "cHRM White X"),
png_fixed(png_ptr, white_y, "cHRM White Y"),
png_fixed(png_ptr, red_x, "cHRM Red X"),
png_fixed(png_ptr, red_y, "cHRM Red Y"),
png_fixed(png_ptr, green_x, "cHRM Green X"),
png_fixed(png_ptr, green_y, "cHRM Green Y"),
png_fixed(png_ptr, blue_x, "cHRM Blue X"),
png_fixed(png_ptr, blue_y, "cHRM Blue Y"));
png_fixed(png_ptr, white_x, "cHRM White X"),
png_fixed(png_ptr, white_y, "cHRM White Y"),
png_fixed(png_ptr, red_x, "cHRM Red X"),
png_fixed(png_ptr, red_y, "cHRM Red Y"),
png_fixed(png_ptr, green_x, "cHRM Green X"),
png_fixed(png_ptr, green_y, "cHRM Green Y"),
png_fixed(png_ptr, blue_x, "cHRM Blue X"),
png_fixed(png_ptr, blue_y, "cHRM Blue Y"));
}
void PNGAPI
@ -120,15 +120,15 @@ png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
double blue_X, double blue_Y, double blue_Z)
{
png_set_cHRM_XYZ_fixed(png_ptr, info_ptr,
png_fixed(png_ptr, red_X, "cHRM Red X"),
png_fixed(png_ptr, red_Y, "cHRM Red Y"),
png_fixed(png_ptr, red_Z, "cHRM Red Z"),
png_fixed(png_ptr, green_X, "cHRM Green X"),
png_fixed(png_ptr, green_Y, "cHRM Green Y"),
png_fixed(png_ptr, green_Z, "cHRM Green Z"),
png_fixed(png_ptr, blue_X, "cHRM Blue X"),
png_fixed(png_ptr, blue_Y, "cHRM Blue Y"),
png_fixed(png_ptr, blue_Z, "cHRM Blue Z"));
png_fixed(png_ptr, red_X, "cHRM Red X"),
png_fixed(png_ptr, red_Y, "cHRM Red Y"),
png_fixed(png_ptr, red_Z, "cHRM Red Z"),
png_fixed(png_ptr, green_X, "cHRM Green X"),
png_fixed(png_ptr, green_Y, "cHRM Green Y"),
png_fixed(png_ptr, green_Z, "cHRM Green Z"),
png_fixed(png_ptr, blue_X, "cHRM Blue X"),
png_fixed(png_ptr, blue_Y, "cHRM Blue Y"),
png_fixed(png_ptr, blue_Z, "cHRM Blue Z"));
}
# endif /* FLOATING_POINT */
@ -316,10 +316,10 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
length = strlen(units) + 1;
png_debug1(3, "allocating units for info (%lu bytes)",
(unsigned long)length);
(unsigned long)length);
info_ptr->pcal_units = png_voidcast(png_charp,
png_malloc_warn(png_ptr, length));
png_malloc_warn(png_ptr, length));
if (info_ptr->pcal_units == NULL)
{
@ -398,7 +398,7 @@ png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw);
info_ptr->scal_s_width = png_voidcast(png_charp,
png_malloc_warn(png_ptr, lengthw));
png_malloc_warn(png_ptr, lengthw));
if (info_ptr->scal_s_width == NULL)
{
@ -414,7 +414,7 @@ png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh);
info_ptr->scal_s_height = png_voidcast(png_charp,
png_malloc_warn(png_ptr, lengthh));
png_malloc_warn(png_ptr, lengthh));
if (info_ptr->scal_s_height == NULL)
{
@ -453,9 +453,9 @@ png_set_sCAL(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
char sheight[PNG_sCAL_MAX_DIGITS+1];
png_ascii_from_fp(png_ptr, swidth, (sizeof swidth), width,
PNG_sCAL_PRECISION);
PNG_sCAL_PRECISION);
png_ascii_from_fp(png_ptr, sheight, (sizeof sheight), height,
PNG_sCAL_PRECISION);
PNG_sCAL_PRECISION);
png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
}
@ -648,7 +648,7 @@ png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
*/
{
int result = png_colorspace_set_ICC(png_ptr, &info_ptr->colorspace, name,
proflen, profile, info_ptr->color_type);
proflen, profile, info_ptr->color_type);
png_colorspace_sync_info(png_ptr, info_ptr);
@ -673,7 +673,7 @@ png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
memcpy(new_iccp_name, name, length);
new_iccp_profile = png_voidcast(png_bytep,
png_malloc_warn(png_ptr, proflen));
png_malloc_warn(png_ptr, proflen));
if (new_iccp_profile == NULL)
{
@ -748,14 +748,14 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
* the overflow checks.
*/
new_text = png_voidcast(png_textp,png_realloc_array(png_ptr,
info_ptr->text, old_num_text, max_text-old_num_text,
sizeof *new_text));
info_ptr->text, old_num_text, max_text-old_num_text,
sizeof *new_text));
}
if (new_text == NULL)
{
png_chunk_report(png_ptr, "too many text chunks",
PNG_CHUNK_WRITE_ERROR);
PNG_CHUNK_WRITE_ERROR);
return 1;
}
@ -783,7 +783,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
{
png_chunk_report(png_ptr, "text compression mode is out of range",
PNG_CHUNK_WRITE_ERROR);
PNG_CHUNK_WRITE_ERROR);
continue;
}
@ -815,7 +815,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
# else /* iTXt */
{
png_chunk_report(png_ptr, "iTXt chunk not supported",
PNG_CHUNK_WRITE_ERROR);
PNG_CHUNK_WRITE_ERROR);
continue;
}
# endif
@ -844,7 +844,7 @@ png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
if (textp->key == NULL)
{
png_chunk_report(png_ptr, "text chunk: out of memory",
PNG_CHUNK_WRITE_ERROR);
PNG_CHUNK_WRITE_ERROR);
return 1;
}
@ -956,7 +956,7 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
{
/* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
info_ptr->trans_alpha = png_voidcast(png_bytep,
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
}
png_ptr->trans_alpha = info_ptr->trans_alpha;
@ -976,7 +976,7 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
trans_color->green > sample_max ||
trans_color->blue > sample_max)))
png_warning(png_ptr,
"tRNS chunk has out-of-range samples for bit_depth");
"tRNS chunk has out-of-range samples for bit_depth");
}
#endif
@ -1018,8 +1018,8 @@ png_set_sPLT(png_const_structrp png_ptr,
* overflows. Notice that the parameters are (int) and (size_t)
*/
np = png_voidcast(png_sPLT_tp,png_realloc_array(png_ptr,
info_ptr->splt_palettes, info_ptr->splt_palettes_num, nentries,
sizeof *np));
info_ptr->splt_palettes, info_ptr->splt_palettes_num, nentries,
sizeof *np));
if (np == NULL)
{
@ -1080,7 +1080,7 @@ png_set_sPLT(png_const_structrp png_ptr,
* checked it when doing the allocation.
*/
memcpy(np->entries, entries->entries,
entries->nentries * sizeof (png_sPLT_entry));
entries->nentries * sizeof (png_sPLT_entry));
/* Note that 'continue' skips the advance of the out pointer and out
* count, so an invalid entry is not added.
@ -1110,10 +1110,10 @@ check_location(png_const_structrp png_ptr, int location)
{
/* Write struct, so unknown chunks come from the app */
png_app_warning(png_ptr,
"png_set_unknown_chunks now expects a valid location");
"png_set_unknown_chunks now expects a valid location");
/* Use the old behavior */
location = (png_byte)(png_ptr->mode &
(PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT));
(PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT));
}
/* This need not be an internal error - if the app calls
@ -1136,7 +1136,7 @@ check_location(png_const_structrp png_ptr, int location)
void PNGAPI
png_set_unknown_chunks(png_const_structrp png_ptr,
png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
{
png_unknown_chunkp np;
@ -1175,13 +1175,13 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
* appropriate to read or write.
*/
np = png_voidcast(png_unknown_chunkp, png_realloc_array(png_ptr,
info_ptr->unknown_chunks, info_ptr->unknown_chunks_num, num_unknowns,
sizeof *np));
info_ptr->unknown_chunks, info_ptr->unknown_chunks_num, num_unknowns,
sizeof *np));
if (np == NULL)
{
png_chunk_report(png_ptr, "too many unknown chunks",
PNG_CHUNK_WRITE_ERROR);
PNG_CHUNK_WRITE_ERROR);
return;
}
@ -1210,12 +1210,12 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
else
{
np->data = png_voidcast(png_bytep,
png_malloc_base(png_ptr, unknowns->size));
png_malloc_base(png_ptr, unknowns->size));
if (np->data == NULL)
{
png_chunk_report(png_ptr, "unknown chunk: out of memory",
PNG_CHUNK_WRITE_ERROR);
PNG_CHUNK_WRITE_ERROR);
/* But just skip storing the unknown chunk */
continue;
}
@ -1422,7 +1422,7 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
for (i=0; i<num_chunks; ++i)
{
old_num_chunks = add_one_chunk(new_list, old_num_chunks,
chunk_list+5*i, keep);
chunk_list+5*i, keep);
}
/* Now remove any spurious 'default' entries. */
@ -1502,60 +1502,60 @@ png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
void PNGAPI
png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size)
{
if (png_ptr == NULL)
return;
if (png_ptr == NULL)
return;
if (size == 0 || size > PNG_UINT_31_MAX)
png_error(png_ptr, "invalid compression buffer size");
if (size == 0 || size > PNG_UINT_31_MAX)
png_error(png_ptr, "invalid compression buffer size");
# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
{
png_ptr->IDAT_read_size = (png_uint_32)size; /* checked above */
return;
}
if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
{
png_ptr->IDAT_read_size = (png_uint_32)size; /* checked above */
return;
}
# endif
# ifdef PNG_WRITE_SUPPORTED
if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0)
if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0)
{
if (png_ptr->zowner != 0)
{
if (png_ptr->zowner != 0)
{
png_warning(png_ptr,
"Compression buffer size cannot be changed because it is in use");
png_warning(png_ptr,
"Compression buffer size cannot be changed because it is in use");
return;
}
return;
}
#ifndef __COVERITY__
/* Some compilers complain that this is always false. However, it
* can be true when integer overflow happens.
*/
if (size > ZLIB_IO_MAX)
{
png_warning(png_ptr,
"Compression buffer size limited to system maximum");
size = ZLIB_IO_MAX; /* must fit */
}
/* Some compilers complain that this is always false. However, it
* can be true when integer overflow happens.
*/
if (size > ZLIB_IO_MAX)
{
png_warning(png_ptr,
"Compression buffer size limited to system maximum");
size = ZLIB_IO_MAX; /* must fit */
}
#endif
if (size < 6)
{
/* Deflate will potentially go into an infinite loop on a SYNC_FLUSH
* if this is permitted.
*/
png_warning(png_ptr,
"Compression buffer size cannot be reduced below 6");
if (size < 6)
{
/* Deflate will potentially go into an infinite loop on a SYNC_FLUSH
* if this is permitted.
*/
png_warning(png_ptr,
"Compression buffer size cannot be reduced below 6");
return;
}
if (png_ptr->zbuffer_size != size)
{
png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
png_ptr->zbuffer_size = (uInt)size;
}
return;
}
if (png_ptr->zbuffer_size != size)
{
png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
png_ptr->zbuffer_size = (uInt)size;
}
}
# endif
}
@ -1662,7 +1662,9 @@ png_set_check_for_invalid_index(png_structrp png_ptr, int allowed)
png_uint_32 /* PRIVATE */
png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
{
#ifdef PNG_WARNINGS_SUPPORTED
png_const_charp orig_key = key;
#endif
png_uint_32 key_len = 0;
int bad_character = 0;
int space = 1;
@ -1725,7 +1727,9 @@ png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
png_formatted_warning(png_ptr, p, "keyword \"@1\": bad character '0x@2'");
}
#endif /* WARNINGS */
#else /* !WARNINGS */
PNG_UNUSED(png_ptr)
#endif /* !WARNINGS */
return key_len;
}

6
pngstruct.h
View File

@ -1,8 +1,8 @@
/* pngstruct.h - header file for PNG reference library
*
* Last changed in libpng 1.6.18 [July 23, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -249,7 +249,7 @@ struct png_struct_def
png_byte filter; /* file filter type (always 0) */
png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
png_byte pass; /* current interlace pass (0 - 6) */
png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
png_byte do_filter; /* row filter flags (see PNG_FILTER_ in png.h ) */
png_byte color_type; /* color type of file */
png_byte bit_depth; /* bit depth of file */
png_byte usr_bit_depth; /* bit depth of users row: write only */

374
pngtest.c
View File

@ -1,8 +1,8 @@
/* pngtest.c - a simple test program to test libpng
*
* Last changed in libpng 1.5.25 [December 3, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -139,13 +139,13 @@ static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
static int
tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t)
{
png_const_charp str = png_convert_to_rfc1123(png_ptr, t);
png_const_charp str = png_convert_to_rfc1123(png_ptr, t);
if (str == NULL)
return 0;
if (str == NULL)
return 0;
strcpy(ts, str);
return 1;
strcpy(ts, str);
return 1;
}
#endif /* older libpng */
#endif
@ -249,95 +249,95 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
* png_byte pixel_depth bits per pixel (depth*channels)
*/
/* Counts the number of zero samples (or zero pixels if color_type is 3 */
/* Counts the number of zero samples (or zero pixels if color_type is 3 */
if (row_info->color_type == 0 || row_info->color_type == 3)
{
int pos = 0;
png_uint_32 n, nstop;
if (row_info->color_type == 0 || row_info->color_type == 3)
{
int pos = 0;
png_uint_32 n, nstop;
for (n = 0, nstop=row_info->width; n<nstop; n++)
{
if (row_info->bit_depth == 1)
{
if (((*dp << pos++ ) & 0x80) == 0)
zero_samples++;
for (n = 0, nstop=row_info->width; n<nstop; n++)
{
if (row_info->bit_depth == 1)
{
if (((*dp << pos++ ) & 0x80) == 0)
zero_samples++;
if (pos == 8)
{
pos = 0;
dp++;
}
}
if (pos == 8)
{
pos = 0;
dp++;
}
}
if (row_info->bit_depth == 2)
{
if (((*dp << (pos+=2)) & 0xc0) == 0)
zero_samples++;
if (row_info->bit_depth == 2)
{
if (((*dp << (pos+=2)) & 0xc0) == 0)
zero_samples++;
if (pos == 8)
{
pos = 0;
dp++;
}
}
if (pos == 8)
{
pos = 0;
dp++;
}
}
if (row_info->bit_depth == 4)
{
if (((*dp << (pos+=4)) & 0xf0) == 0)
zero_samples++;
if (row_info->bit_depth == 4)
{
if (((*dp << (pos+=4)) & 0xf0) == 0)
zero_samples++;
if (pos == 8)
{
pos = 0;
dp++;
}
}
if (pos == 8)
{
pos = 0;
dp++;
}
}
if (row_info->bit_depth == 8)
if (*dp++ == 0)
zero_samples++;
if (row_info->bit_depth == 8)
if (*dp++ == 0)
zero_samples++;
if (row_info->bit_depth == 16)
{
if ((*dp | *(dp+1)) == 0)
zero_samples++;
dp+=2;
}
}
}
else /* Other color types */
{
png_uint_32 n, nstop;
int channel;
int color_channels = row_info->channels;
if (row_info->color_type > 3)
color_channels--;
if (row_info->bit_depth == 16)
{
if ((*dp | *(dp+1)) == 0)
zero_samples++;
dp+=2;
}
}
}
else /* Other color types */
{
png_uint_32 n, nstop;
int channel;
int color_channels = row_info->channels;
if (row_info->color_type > 3)
color_channels--;
for (n = 0, nstop=row_info->width; n<nstop; n++)
{
for (channel = 0; channel < color_channels; channel++)
{
if (row_info->bit_depth == 8)
if (*dp++ == 0)
zero_samples++;
for (n = 0, nstop=row_info->width; n<nstop; n++)
{
for (channel = 0; channel < color_channels; channel++)
{
if (row_info->bit_depth == 8)
if (*dp++ == 0)
zero_samples++;
if (row_info->bit_depth == 16)
{
if ((*dp | *(dp+1)) == 0)
zero_samples++;
if (row_info->bit_depth == 16)
{
if ((*dp | *(dp+1)) == 0)
zero_samples++;
dp+=2;
}
}
if (row_info->color_type > 3)
{
dp++;
if (row_info->bit_depth == 16)
dp++;
}
}
}
dp+=2;
}
}
if (row_info->color_type > 3)
{
dp++;
if (row_info->bit_depth == 16)
dp++;
}
}
}
}
#endif /* WRITE_USER_TRANSFORM */
@ -354,10 +354,10 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
#ifdef PNG_IO_STATE_SUPPORTED
void
pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
png_uint_32 io_op);
png_uint_32 io_op);
void
pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
png_uint_32 io_op)
png_uint_32 io_op)
{
png_uint_32 io_state = png_get_io_state(png_ptr);
int err = 0;
@ -541,7 +541,7 @@ PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
memory_infop pinfo;
png_set_mem_fn(png_ptr, NULL, NULL, NULL);
pinfo = (memory_infop)png_malloc(png_ptr,
(sizeof *pinfo));
(sizeof *pinfo));
pinfo->size = size;
current_allocation += size;
total_allocation += size;
@ -571,7 +571,7 @@ PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
if (verbose != 0)
printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
pinfo->pointer);
pinfo->pointer);
return (png_voidp)(pinfo->pointer);
}
@ -778,9 +778,9 @@ write_vpAg_chunk(png_structp write_ptr)
if (verbose != 0)
fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
(unsigned long)user_chunk_data.vpAg_width,
(unsigned long)user_chunk_data.vpAg_height,
user_chunk_data.vpAg_units);
(unsigned long)user_chunk_data.vpAg_width,
(unsigned long)user_chunk_data.vpAg_height,
user_chunk_data.vpAg_units);
png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
@ -821,7 +821,7 @@ write_chunks(png_structp write_ptr, int location)
#ifdef PNG_TEXT_SUPPORTED
static void
pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr,
int num_text)
int num_text)
{
while (num_text > 0)
{
@ -903,26 +903,26 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
pngtest_debug("Allocating read and write structures");
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
read_ptr =
png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
NULL, NULL, NULL, png_debug_malloc, png_debug_free);
png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
NULL, NULL, NULL, png_debug_malloc, png_debug_free);
#else
read_ptr =
png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
#endif
png_set_error_fn(read_ptr, &error_parameters, pngtest_error,
pngtest_warning);
pngtest_warning);
#ifdef PNG_WRITE_SUPPORTED
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
write_ptr =
png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
NULL, NULL, NULL, png_debug_malloc, png_debug_free);
png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
NULL, NULL, NULL, png_debug_malloc, png_debug_free);
#else
write_ptr =
png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
#endif
png_set_error_fn(write_ptr, &error_parameters, pngtest_error,
pngtest_warning);
pngtest_warning);
#endif
pngtest_debug("Allocating read_info, write_info and end_info structures");
read_info_ptr = png_create_info_struct(read_ptr);
@ -935,7 +935,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
init_callback_info(read_info_ptr);
png_set_read_user_chunk_fn(read_ptr, &user_chunk_data,
read_user_chunk_callback);
read_user_chunk_callback);
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -1010,9 +1010,9 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
# ifdef PNG_WRITE_SUPPORTED
png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
# ifdef PNG_WRITE_FLUSH_SUPPORTED
pngtest_flush);
pngtest_flush);
# else
NULL);
NULL);
# endif
# endif
#endif
@ -1052,11 +1052,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
*/
#ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
NULL, 0);
NULL, 0);
#endif
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
NULL, 0);
NULL, 0);
#endif
#endif
@ -1080,7 +1080,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
&color_type, &interlace_type, &compression_type, &filter_type) != 0)
{
png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
color_type, interlace_type, compression_type, filter_type);
color_type, interlace_type, compression_type, filter_type);
/* num_passes may not be available below if interlace support is not
* provided by libpng for both read and write.
*/
@ -1107,13 +1107,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#ifdef PNG_cHRM_SUPPORTED
{
png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
blue_y;
blue_y;
if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
&red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
&red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
{
png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
red_y, green_x, green_y, blue_x, blue_y);
red_y, green_x, green_y, blue_x, blue_y);
}
}
#endif
@ -1130,13 +1130,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#ifdef PNG_cHRM_SUPPORTED
{
double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
blue_y;
blue_y;
if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
&red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
&red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
{
png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
red_y, green_x, green_y, blue_x, blue_y);
red_y, green_x, green_y, blue_x, blue_y);
}
}
#endif
@ -1158,10 +1158,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
int compression_type;
if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
&profile, &proflen) != 0)
&profile, &proflen) != 0)
{
png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
profile, proflen);
profile, proflen);
}
}
#endif
@ -1218,10 +1218,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
int type, nparams;
if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
&nparams, &units, &params) != 0)
&nparams, &units, &params) != 0)
{
png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
nparams, units, params);
nparams, units, params);
}
}
#endif
@ -1251,7 +1251,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
double scal_width, scal_height;
if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
&scal_height) != 0)
&scal_height) != 0)
{
png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
}
@ -1263,7 +1263,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_charp scal_width, scal_height;
if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
&scal_height) != 0)
&scal_height) != 0)
{
png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
scal_height);
@ -1304,7 +1304,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
for (i=0; i<num_text; i++)
{
printf(" Text compression[%d]=%d\n",
i, text_ptr[i].compression);
i, text_ptr[i].compression);
}
}
@ -1341,7 +1341,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_color_16p trans_color;
if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
&trans_color) != 0)
&trans_color) != 0)
{
int sample_max = (1 << bit_depth);
/* libpng doesn't reject a tRNS chunk with out-of-range samples */
@ -1360,12 +1360,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
png_unknown_chunkp unknowns;
int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
&unknowns);
&unknowns);
if (num_unknowns != 0)
{
png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
num_unknowns);
num_unknowns);
#if PNG_LIBPNG_VER < 10600
/* Copy the locations from the read_info_ptr. The automatically
* generated locations in write_end_info_ptr are wrong prior to 1.6.0
@ -1375,7 +1375,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
int i;
for (i = 0; i < num_unknowns; i++)
png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
unknowns[i].location);
unknowns[i].location);
}
#endif
}
@ -1400,7 +1400,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
#ifdef SINGLE_ROWBUF_ALLOC
pngtest_debug("Allocating row buffer...");
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
png_get_rowbytes(read_ptr, read_info_ptr));
pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
#endif /* SINGLE_ROWBUF_ALLOC */
@ -1414,10 +1414,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
*/
if (png_set_interlace_handling(read_ptr) != num_passes)
png_error(write_ptr,
"png_set_interlace_handling(read): wrong pass count ");
"png_set_interlace_handling(read): wrong pass count ");
if (png_set_interlace_handling(write_ptr) != num_passes)
png_error(write_ptr,
"png_set_interlace_handling(write): wrong pass count ");
"png_set_interlace_handling(write): wrong pass count ");
#else /* png_set_interlace_handling not called on either read or write */
# define calc_pass_height
#endif /* not using libpng interlace handling */
@ -1454,10 +1454,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
row_buf = (png_bytep)png_malloc(read_ptr,
png_get_rowbytes(read_ptr, read_info_ptr));
png_get_rowbytes(read_ptr, read_info_ptr));
pngtest_debug2("\t0x%08lx (%lu bytes)", (unsigned long)row_buf,
(unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));
(unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));
#endif /* !SINGLE_ROWBUF_ALLOC */
png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
@ -1515,7 +1515,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
for (i=0; i<num_text; i++)
{
printf(" Text compression[%d]=%d\n",
i, text_ptr[i].compression);
i, text_ptr[i].compression);
}
}
@ -1549,12 +1549,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
png_unknown_chunkp unknowns;
int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
&unknowns);
&unknowns);
if (num_unknowns != 0)
{
png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
num_unknowns);
num_unknowns);
#if PNG_LIBPNG_VER < 10600
/* Copy the locations from the read_info_ptr. The automatically
* generated locations in write_end_info_ptr are wrong prior to 1.6.0
@ -1564,7 +1564,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
int i;
for (i = 0; i < num_unknowns; i++)
png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
unknowns[i].location);
unknowns[i].location);
}
#endif
}
@ -1598,7 +1598,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
iwidth = png_get_image_width(write_ptr, write_info_ptr);
iheight = png_get_image_height(write_ptr, write_info_ptr);
fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
(unsigned long)iwidth, (unsigned long)iheight);
(unsigned long)iwidth, (unsigned long)iheight);
}
#endif
@ -1631,7 +1631,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
* above, but this is safe.
*/
fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)",
inname, error_count, warning_count);
inname, error_count, warning_count);
if (strict != 0)
return (1);
@ -1642,14 +1642,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
else if (unsupported_chunks > 0)
{
fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
}
# endif
else if (warning_count > 0)
{
fprintf(STDERR, "\n %s: %d libpng warnings found",
inname, warning_count);
inname, warning_count);
if (strict != 0)
return (1);
@ -1685,18 +1685,19 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if (num_in != num_out)
{
fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
inname, outname);
inname, outname);
if (wrote_question == 0 && unsupported_chunks == 0)
{
fprintf(STDERR,
" Was %s written with the same maximum IDAT chunk size (%d bytes),",
inname, PNG_ZBUF_SIZE);
" Was %s written with the same maximum IDAT"
" chunk size (%d bytes),",
inname, PNG_ZBUF_SIZE);
fprintf(STDERR,
"\n filtering heuristic (libpng default), compression");
"\n filtering heuristic (libpng default), compression");
fprintf(STDERR,
" level (zlib default),\n and zlib version (%s)?\n\n",
ZLIB_VERSION);
" level (zlib default),\n and zlib version (%s)?\n\n",
ZLIB_VERSION);
wrote_question = 1;
}
@ -1716,17 +1717,18 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if (memcmp(inbuf, outbuf, num_in))
{
fprintf(STDERR, "\nFiles %s and %s are different\n", inname,
outname);
outname);
if (wrote_question == 0 && unsupported_chunks == 0)
{
fprintf(STDERR,
" Was %s written with the same maximum IDAT chunk size (%d bytes),",
" Was %s written with the same maximum"
" IDAT chunk size (%d bytes),",
inname, PNG_ZBUF_SIZE);
fprintf(STDERR,
"\n filtering heuristic (libpng default), compression");
"\n filtering heuristic (libpng default), compression");
fprintf(STDERR,
" level (zlib default),\n and zlib version (%s)?\n\n",
" level (zlib default),\n and zlib version (%s)?\n\n",
ZLIB_VERSION);
wrote_question = 1;
}
@ -1777,12 +1779,12 @@ main(int argc, char *argv[])
fprintf(STDERR, "%s", png_get_copyright(NULL));
/* Show the version of libpng used in building the library */
fprintf(STDERR, " library (%lu):%s",
(unsigned long)png_access_version_number(),
png_get_header_version(NULL));
(unsigned long)png_access_version_number(),
png_get_header_version(NULL));
/* Show the version of libpng used in building the application */
fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
PNG_HEADER_VERSION_STRING);
PNG_HEADER_VERSION_STRING);
/* Do some consistency checking on the memory allocation settings, I'm
* not sure this matters, but it is nice to know, the first of these
@ -1800,7 +1802,7 @@ main(int argc, char *argv[])
if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
{
fprintf(STDERR,
"Warning: versions are different between png.h and png.c\n");
"Warning: versions are different between png.h and png.c\n");
fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
++ierror;
@ -1855,19 +1857,19 @@ main(int argc, char *argv[])
}
if (multiple == 0 && argc == 3 + verbose)
outname = argv[2 + verbose];
outname = argv[2 + verbose];
if ((multiple == 0 && argc > 3 + verbose) ||
(multiple != 0 && argc < 2))
{
fprintf(STDERR,
"usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
argv[0], argv[0]);
fprintf(STDERR,
" reads/writes one PNG file (without -m) or multiple files (-m)\n");
fprintf(STDERR,
" with -m %s is used as a temporary file\n", outname);
exit(1);
fprintf(STDERR,
"usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
argv[0], argv[0]);
fprintf(STDERR,
" reads/writes one PNG file (without -m) or multiple files (-m)\n");
fprintf(STDERR,
" with -m %s is used as a temporary file\n", outname);
exit(1);
}
if (multiple != 0)
@ -1888,7 +1890,7 @@ main(int argc, char *argv[])
{
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
fprintf(STDERR, "\n PASS (%lu zero samples)\n",
(unsigned long)zero_samples);
(unsigned long)zero_samples);
#else
fprintf(STDERR, " PASS\n");
#endif
@ -1908,20 +1910,20 @@ main(int argc, char *argv[])
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
current_allocation - allocation_now);
current_allocation - allocation_now);
if (current_allocation != 0)
{
memory_infop pinfo = pinformation;
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
current_allocation);
current_allocation);
while (pinfo != NULL)
{
fprintf(STDERR, " %lu bytes at %p\n",
(unsigned long)pinfo->size,
pinfo->pointer);
(unsigned long)pinfo->size,
pinfo->pointer);
pinfo = pinfo->next;
}
}
@ -1929,13 +1931,13 @@ main(int argc, char *argv[])
}
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
fprintf(STDERR, " Current memory allocation: %10d bytes\n",
current_allocation);
current_allocation);
fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
maximum_allocation);
maximum_allocation);
fprintf(STDERR, " Total memory allocation: %10d bytes\n",
total_allocation);
total_allocation);
fprintf(STDERR, " Number of allocations: %10d\n",
num_allocations);
num_allocations);
#endif
}
@ -1970,7 +1972,7 @@ main(int argc, char *argv[])
{
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
fprintf(STDERR, "\n PASS (%lu zero samples)\n",
(unsigned long)zero_samples);
(unsigned long)zero_samples);
#else
fprintf(STDERR, " PASS\n");
#endif
@ -1997,19 +1999,19 @@ main(int argc, char *argv[])
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
current_allocation - allocation_now);
current_allocation - allocation_now);
if (current_allocation != 0)
{
memory_infop pinfo = pinformation;
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
current_allocation);
current_allocation);
while (pinfo != NULL)
{
fprintf(STDERR, " %lu bytes at %p\n",
(unsigned long)pinfo->size, pinfo->pointer);
(unsigned long)pinfo->size, pinfo->pointer);
pinfo = pinfo->next;
}
}
@ -2017,13 +2019,13 @@ main(int argc, char *argv[])
}
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
fprintf(STDERR, " Current memory allocation: %10d bytes\n",
current_allocation);
current_allocation);
fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
maximum_allocation);
maximum_allocation);
fprintf(STDERR, " Total memory allocation: %10d bytes\n",
total_allocation);
total_allocation);
fprintf(STDERR, " Number of allocations: %10d\n",
num_allocations);
num_allocations);
#endif
}
@ -2032,13 +2034,13 @@ main(int argc, char *argv[])
t_misc += (t_stop - t_start);
t_start = t_stop;
fprintf(STDERR, " CPU time used = %.3f seconds",
(t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
(t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
fprintf(STDERR, " (decoding %.3f,\n",
t_decode/(float)CLOCKS_PER_SEC);
t_decode/(float)CLOCKS_PER_SEC);
fprintf(STDERR, " encoding %.3f ,",
t_encode/(float)CLOCKS_PER_SEC);
t_encode/(float)CLOCKS_PER_SEC);
fprintf(STDERR, " other %.3f seconds)\n\n",
t_misc/(float)CLOCKS_PER_SEC);
t_misc/(float)CLOCKS_PER_SEC);
#endif
if (ierror == 0)
@ -2050,19 +2052,19 @@ main(int argc, char *argv[])
dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
fprintf(STDERR, " Default limits:\n");
fprintf(STDERR, " width_max = %lu\n",
(unsigned long) png_get_user_width_max(dummy_ptr));
(unsigned long) png_get_user_width_max(dummy_ptr));
fprintf(STDERR, " height_max = %lu\n",
(unsigned long) png_get_user_height_max(dummy_ptr));
(unsigned long) png_get_user_height_max(dummy_ptr));
if (png_get_chunk_cache_max(dummy_ptr) == 0)
fprintf(STDERR, " cache_max = unlimited\n");
else
fprintf(STDERR, " cache_max = %lu\n",
(unsigned long) png_get_chunk_cache_max(dummy_ptr));
(unsigned long) png_get_chunk_cache_max(dummy_ptr));
if (png_get_chunk_malloc_max(dummy_ptr) == 0)
fprintf(STDERR, " malloc_max = unlimited\n");
else
fprintf(STDERR, " malloc_max = %lu\n",
(unsigned long) png_get_chunk_malloc_max(dummy_ptr));
(unsigned long) png_get_chunk_malloc_max(dummy_ptr));
png_destroy_read_struct(&dummy_ptr, NULL, NULL);
return (int)(ierror != 0);
@ -2072,11 +2074,11 @@ int
main(void)
{
fprintf(STDERR,
" test ignored because libpng was not built with read support\n");
" test ignored because libpng was not built with read support\n");
/* And skip this test */
return SKIP;
}
#endif
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_23 Your_png_h_is_not_version_1_6_23;
typedef png_libpng_version_1_6_24 Your_png_h_is_not_version_1_6_24;

11
pngtrans.c
View File

@ -1,8 +1,8 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.6.18 [July 23, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -172,13 +172,14 @@ png_set_filler(png_structrp png_ptr, png_uint_32 filler, int filler_loc)
* size!
*/
png_app_error(png_ptr,
"png_set_filler is invalid for low bit depth gray output");
"png_set_filler is invalid for"
" low bit depth gray output");
return;
}
default:
png_app_error(png_ptr,
"png_set_filler: inappropriate color type");
"png_set_filler: inappropriate color type");
return;
}
# else
@ -797,7 +798,7 @@ png_set_user_transform_info(png_structrp png_ptr, png_voidp
(png_ptr->flags & PNG_FLAG_ROW_INIT) != 0)
{
png_app_error(png_ptr,
"info change after png_start_read_image or png_read_update_info");
"info change after png_start_read_image or png_read_update_info");
return;
}
#endif

6
pngwio.c
View File

@ -1,8 +1,8 @@
/* pngwio.c - functions for data output
*
* Last changed in libpng 1.6.15 [November 20, 2014]
* Copyright (c) 1998-2002,2004,2006-2014 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2014,2016 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.)
*
@ -35,7 +35,7 @@ png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
/* NOTE: write_data_fn must not change the buffer! */
if (png_ptr->write_data_fn != NULL )
(*(png_ptr->write_data_fn))(png_ptr, png_constcast(png_bytep,data),
length);
length);
else
png_error(png_ptr, "Call to NULL write function");

96
pngwrite.c
View File

@ -1,8 +1,8 @@
/* pngwrite.c - general routines to write a PNG file
*
* Last changed in libpng 1.6.19 [November 12, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -22,7 +22,7 @@
/* Write out all the unknown chunks for the current given location */
static void
write_unknown_chunks(png_structrp png_ptr, png_const_inforp info_ptr,
unsigned int where)
unsigned int where)
{
if (info_ptr->unknown_chunks_num != 0)
{
@ -148,11 +148,11 @@ png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
# ifdef PNG_WRITE_sRGB_SUPPORTED
if ((info_ptr->valid & PNG_INFO_sRGB) != 0)
png_app_warning(png_ptr,
"profile matches sRGB but writing iCCP instead");
"profile matches sRGB but writing iCCP instead");
# endif
png_write_iCCP(png_ptr, info_ptr->iccp_name,
info_ptr->iccp_profile);
info_ptr->iccp_profile);
}
# ifdef PNG_WRITE_sRGB_SUPPORTED
else
@ -383,7 +383,7 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
for (i = 0; i < info_ptr->num_text; i++)
{
png_debug2(2, "Writing trailer text chunk %d, type %d", i,
info_ptr->text[i].compression);
info_ptr->text[i].compression);
/* An internationalized chunk? */
if (info_ptr->text[i].compression > 0)
{
@ -693,7 +693,7 @@ png_write_row(png_structrp png_ptr, png_const_bytep row)
return;
png_debug2(1, "in png_write_row (row %u, pass %d)",
png_ptr->row_number, png_ptr->pass);
png_ptr->row_number, png_ptr->pass);
/* Initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
@ -1069,7 +1069,7 @@ png_set_filter(png_structrp png_ptr, int method, int filters)
* is not available so the filter can't be used. Just warn here.
*/
png_app_warning(png_ptr,
"png_set_filter: UP/AVG/PAETH cannot be added after start");
"png_set_filter: UP/AVG/PAETH cannot be added after start");
filters &= ~(PNG_FILTER_UP|PNG_FILTER_AVG|PNG_FILTER_PAETH);
}
@ -1095,13 +1095,13 @@ png_set_filter(png_structrp png_ptr, int method, int filters)
if (png_ptr->try_row == NULL)
png_ptr->try_row = png_voidcast(png_bytep,
png_malloc(png_ptr, buf_size));
png_malloc(png_ptr, buf_size));
if (num_filters > 1)
{
if (png_ptr->tst_row == NULL)
png_ptr->tst_row = png_voidcast(png_bytep,
png_malloc(png_ptr, buf_size));
png_malloc(png_ptr, buf_size));
}
}
png_ptr->do_filter = (png_byte)filters;
@ -1628,7 +1628,7 @@ png_write_image_16bit(png_voidp argument)
static png_byte
png_unpremultiply(png_uint_32 component, png_uint_32 alpha,
png_uint_32 reciprocal/*from the above macro*/)
png_uint_32 reciprocal/*from the above macro*/)
{
/* The following gives 1.0 for an alpha of 0, which is fine, otherwise if 0/0
* is represented as some other value there is more likely to be a
@ -1848,16 +1848,16 @@ png_image_set_PLTE(png_image_write_control *display)
if (channels >= 3) /* RGB */
{
palette[i].blue = png_unpremultiply(entry[afirst + (2 ^ bgr)],
alpha, reciprocal);
alpha, reciprocal);
palette[i].green = png_unpremultiply(entry[afirst + 1], alpha,
reciprocal);
reciprocal);
palette[i].red = png_unpremultiply(entry[afirst + bgr], alpha,
reciprocal);
reciprocal);
}
else /* gray */
palette[i].blue = palette[i].red = palette[i].green =
png_unpremultiply(entry[afirst], alpha, reciprocal);
png_unpremultiply(entry[afirst], alpha, reciprocal);
}
}
@ -1904,11 +1904,11 @@ png_image_set_PLTE(png_image_write_control *display)
# endif
png_set_PLTE(image->opaque->png_ptr, image->opaque->info_ptr, palette,
entries);
entries);
if (num_trans > 0)
png_set_tRNS(image->opaque->png_ptr, image->opaque->info_ptr, tRNS,
num_trans, NULL);
num_trans, NULL);
image->colormap_entries = entries;
}
@ -1917,7 +1917,7 @@ static int
png_image_write_main(png_voidp argument)
{
png_image_write_control *display = png_voidcast(png_image_write_control*,
argument);
argument);
png_imagep image = display->image;
png_structrp png_ptr = image->opaque->png_ptr;
png_inforp info_ptr = image->opaque->info_ptr;
@ -1980,24 +1980,24 @@ png_image_write_main(png_voidp argument)
png_uint_32 entries = image->colormap_entries;
png_set_IHDR(png_ptr, info_ptr, image->width, image->height,
entries > 16 ? 8 : (entries > 4 ? 4 : (entries > 2 ? 2 : 1)),
PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
entries > 16 ? 8 : (entries > 4 ? 4 : (entries > 2 ? 2 : 1)),
PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
png_image_set_PLTE(display);
}
else
png_error(image->opaque->png_ptr,
"no color-map for color-mapped image");
"no color-map for color-mapped image");
}
else
png_set_IHDR(png_ptr, info_ptr, image->width, image->height,
write_16bit ? 16 : 8,
((format & PNG_FORMAT_FLAG_COLOR) ? PNG_COLOR_MASK_COLOR : 0) +
((format & PNG_FORMAT_FLAG_ALPHA) ? PNG_COLOR_MASK_ALPHA : 0),
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
write_16bit ? 16 : 8,
((format & PNG_FORMAT_FLAG_COLOR) ? PNG_COLOR_MASK_COLOR : 0) +
((format & PNG_FORMAT_FLAG_ALPHA) ? PNG_COLOR_MASK_ALPHA : 0),
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
/* Counter-intuitively the data transformations must be called *after*
* png_write_info, not before as in the read code, but the 'set' functions
@ -2012,11 +2012,11 @@ png_image_write_main(png_voidp argument)
if ((image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB) == 0)
png_set_cHRM_fixed(png_ptr, info_ptr,
/* color x y */
/* white */ 31270, 32900,
/* red */ 64000, 33000,
/* green */ 30000, 60000,
/* blue */ 15000, 6000
/* color x y */
/* white */ 31270, 32900,
/* red */ 64000, 33000,
/* green */ 30000, 60000,
/* blue */ 15000, 6000
);
}
@ -2110,7 +2110,7 @@ png_image_write_main(png_voidp argument)
(colormap == 0 && display->convert_to_8bit != 0))
{
png_bytep row = png_voidcast(png_bytep, png_malloc(png_ptr,
png_get_rowbytes(png_ptr, info_ptr)));
png_get_rowbytes(png_ptr, info_ptr)));
int result;
display->local_row = row;
@ -2150,10 +2150,10 @@ png_image_write_main(png_voidp argument)
static void (PNGCBAPI
image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data,
png_size_t size)
png_size_t size)
{
png_image_write_control *display = png_voidcast(png_image_write_control*,
png_ptr->io_ptr/*backdoor: png_get_io_ptr(png_ptr)*/);
png_ptr->io_ptr/*backdoor: png_get_io_ptr(png_ptr)*/);
const png_alloc_size_t ob = display->output_bytes;
/* Check for overflow; this should never happen: */
@ -2184,22 +2184,22 @@ static int
png_image_write_memory(png_voidp argument)
{
png_image_write_control *display = png_voidcast(png_image_write_control*,
argument);
argument);
/* The rest of the memory-specific init and write_main in an error protected
* environment. This case needs to use callbacks for the write operations
* since libpng has no built in support for writing to memory.
*/
png_set_write_fn(display->image->opaque->png_ptr, display/*io_ptr*/,
image_memory_write, image_memory_flush);
image_memory_write, image_memory_flush);
return png_image_write_main(display);
}
int PNGAPI
png_image_write_to_memory(png_imagep image, void *memory,
png_alloc_size_t * PNG_RESTRICT memory_bytes, int convert_to_8bit,
const void *buffer, png_int_32 row_stride, const void *colormap)
png_alloc_size_t * PNG_RESTRICT memory_bytes, int convert_to_8bit,
const void *buffer, png_int_32 row_stride, const void *colormap)
{
/* Write the image to the given buffer, or count the bytes if it is NULL */
if (image != NULL && image->version == PNG_IMAGE_VERSION)
@ -2251,12 +2251,12 @@ png_image_write_to_memory(png_imagep image, void *memory,
else
return png_image_error(image,
"png_image_write_to_memory: invalid argument");
"png_image_write_to_memory: invalid argument");
}
else if (image != NULL)
return png_image_error(image,
"png_image_write_to_memory: incorrect PNG_IMAGE_VERSION");
"png_image_write_to_memory: incorrect PNG_IMAGE_VERSION");
else
return 0;
@ -2265,7 +2265,7 @@ png_image_write_to_memory(png_imagep image, void *memory,
#ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED
int PNGAPI
png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit,
const void *buffer, png_int_32 row_stride, const void *colormap)
const void *buffer, png_int_32 row_stride, const void *colormap)
{
/* Write the image to the given (FILE*). */
if (image != NULL && image->version == PNG_IMAGE_VERSION)
@ -2301,12 +2301,12 @@ png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit,
else
return png_image_error(image,
"png_image_write_to_stdio: invalid argument");
"png_image_write_to_stdio: invalid argument");
}
else if (image != NULL)
return png_image_error(image,
"png_image_write_to_stdio: incorrect PNG_IMAGE_VERSION");
"png_image_write_to_stdio: incorrect PNG_IMAGE_VERSION");
else
return 0;
@ -2314,8 +2314,8 @@ png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit,
int PNGAPI
png_image_write_to_file(png_imagep image, const char *file_name,
int convert_to_8bit, const void *buffer, png_int_32 row_stride,
const void *colormap)
int convert_to_8bit, const void *buffer, png_int_32 row_stride,
const void *colormap)
{
/* Write the image to the named file. */
if (image != NULL && image->version == PNG_IMAGE_VERSION)
@ -2327,7 +2327,7 @@ png_image_write_to_file(png_imagep image, const char *file_name,
if (fp != NULL)
{
if (png_image_write_to_stdio(image, fp, convert_to_8bit, buffer,
row_stride, colormap) != 0)
row_stride, colormap) != 0)
{
int error; /* from fflush/fclose */
@ -2368,12 +2368,12 @@ png_image_write_to_file(png_imagep image, const char *file_name,
else
return png_image_error(image,
"png_image_write_to_file: invalid argument");
"png_image_write_to_file: invalid argument");
}
else if (image != NULL)
return png_image_error(image,
"png_image_write_to_file: incorrect PNG_IMAGE_VERSION");
"png_image_write_to_file: incorrect PNG_IMAGE_VERSION");
else
return 0;

8
pngwtran.c
View File

@ -1,8 +1,8 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.6.18 [July 23, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
*
@ -525,7 +525,7 @@ png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
#ifdef PNG_WRITE_FILLER_SUPPORTED
if ((png_ptr->transformations & PNG_FILLER) != 0)
png_do_strip_channel(row_info, png_ptr->row_buf + 1,
!(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
!(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
#endif
#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
@ -549,7 +549,7 @@ png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
#ifdef PNG_WRITE_SHIFT_SUPPORTED
if ((png_ptr->transformations & PNG_SHIFT) != 0)
png_do_shift(row_info, png_ptr->row_buf + 1,
&(png_ptr->shift));
&(png_ptr->shift));
#endif
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED

214
pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.6.22 [May 26, 2016]
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 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.)
@ -59,7 +59,7 @@ png_write_sig(png_structrp png_ptr)
/* Write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
(png_size_t)(8 - png_ptr->sig_bytes));
(png_size_t)(8 - png_ptr->sig_bytes));
if (png_ptr->sig_bytes < 3)
png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
@ -174,7 +174,7 @@ png_write_chunk_end(png_structrp png_ptr)
*/
static void
png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
png_const_bytep data, png_size_t length)
png_const_bytep data, png_size_t length)
{
if (png_ptr == NULL)
return;
@ -191,10 +191,10 @@ png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
/* This is the API that calls the internal function above. */
void PNGAPI
png_write_chunk(png_structrp png_ptr, png_const_bytep chunk_string,
png_const_bytep data, png_size_t length)
png_const_bytep data, png_size_t length)
{
png_write_complete_chunk(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), data,
length);
length);
}
/* This is used below to find the size of an image to pass to png_deflate_claim,
@ -291,7 +291,7 @@ optimize_cmf(png_bytep data, png_alloc_size_t data_size)
/* Initialize the compressor for the appropriate type of compression. */
static int
png_deflate_claim(png_structrp png_ptr, png_uint_32 owner,
png_alloc_size_t data_size)
png_alloc_size_t data_size)
{
if (png_ptr->zowner != 0)
{
@ -416,7 +416,7 @@ png_deflate_claim(png_structrp png_ptr, png_uint_32 owner,
else
{
ret = deflateInit2(&png_ptr->zstream, level, method, windowBits,
memLevel, strategy);
memLevel, strategy);
if (ret == Z_OK)
png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
@ -477,7 +477,7 @@ typedef struct
static void
png_text_compress_init(compression_state *comp, png_const_bytep input,
png_alloc_size_t input_len)
png_alloc_size_t input_len)
{
comp->input = input;
comp->input_len = input_len;
@ -487,7 +487,7 @@ png_text_compress_init(compression_state *comp, png_const_bytep input,
/* Compress the data in the compression state input */
static int
png_text_compress(png_structrp png_ptr, png_uint_32 chunk_name,
compression_state *comp, png_uint_32 prefix_len)
compression_state *comp, png_uint_32 prefix_len)
{
int ret;
@ -579,7 +579,7 @@ png_text_compress(png_structrp png_ptr, png_uint_32 chunk_name,
/* Compress the data */
ret = deflate(&png_ptr->zstream,
input_len > 0 ? Z_NO_FLUSH : Z_FINISH);
input_len > 0 ? Z_NO_FLUSH : Z_FINISH);
/* Claw back input data that was not consumed (because avail_in is
* reset above every time round the loop).
@ -925,7 +925,7 @@ png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
*/
void /* PRIVATE */
png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
png_alloc_size_t input_len, int flush)
png_alloc_size_t input_len, int flush)
{
if (png_ptr->zowner != png_IDAT)
{
@ -937,7 +937,7 @@ png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
if (png_ptr->zbuffer_list == NULL)
{
png_ptr->zbuffer_list = png_voidcast(png_compression_bufferp,
png_malloc(png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr)));
png_malloc(png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr)));
png_ptr->zbuffer_list->next = NULL;
}
@ -1358,7 +1358,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
/* Write the chunk out as it is */
png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha,
(png_size_t)num_trans);
(png_size_t)num_trans);
}
else if (color_type == PNG_COLOR_TYPE_GRAY)
@ -1389,7 +1389,7 @@ png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
#endif
{
png_app_warning(png_ptr,
"Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
"Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
return;
}
@ -1441,7 +1441,8 @@ png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
#endif
{
png_warning(png_ptr,
"Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
"Ignoring attempt to write 16-bit bKGD chunk "
"when bit_depth is 8");
return;
}
@ -1571,7 +1572,7 @@ png_write_zTXt(png_structrp png_ptr, png_const_charp key, png_const_charp text,
/* Compute the compressed data; do it now for the length */
png_text_compress_init(&comp, (png_const_bytep)text,
text == NULL ? 0 : strlen(text));
text == NULL ? 0 : strlen(text));
if (png_text_compress(png_ptr, png_zTXt, &comp, key_len) != Z_OK)
png_error(png_ptr, png_ptr->zstream.msg);
@ -1941,7 +1942,7 @@ png_write_start_row(png_structrp png_ptr)
*/
if ((filters & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH)) != 0)
png_ptr->prev_row = png_voidcast(png_bytep,
png_calloc(png_ptr, buf_size));
png_calloc(png_ptr, buf_size));
#endif /* WRITE_FILTER */
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
@ -2244,7 +2245,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
*/
static void /* PRIVATE */
png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
png_size_t row_bytes);
png_size_t row_bytes);
#ifdef PNG_WRITE_FILTER_SUPPORTED
static png_size_t /* PRIVATE */
@ -2262,14 +2263,22 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
i++, rp++, dp++)
{
v = *dp = *rp;
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
}
for (lp = png_ptr->row_buf + 1; i < row_bytes;
i++, rp++, lp++, dp++)
{
v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
if (sum > lmins) /* We are already worse, don't continue. */
break;
@ -2278,6 +2287,28 @@ png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp,
return (sum);
}
static void /* PRIVATE */
png_setup_sub_row_only(png_structrp png_ptr, const png_uint_32 bpp,
const png_size_t row_bytes)
{
png_bytep rp, dp, lp;
png_size_t i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_SUB;
for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1; i < bpp;
i++, rp++, dp++)
{
*dp = *rp;
}
for (lp = png_ptr->row_buf + 1; i < row_bytes;
i++, rp++, lp++, dp++)
{
*dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
}
}
static png_size_t /* PRIVATE */
png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
const png_size_t lmins)
@ -2294,7 +2325,11 @@ png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
i++, rp++, pp++, dp++)
{
v = *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
if (sum > lmins) /* We are already worse, don't continue. */
break;
@ -2302,10 +2337,25 @@ png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes,
return (sum);
}
static void /* PRIVATE */
png_setup_up_row_only(png_structrp png_ptr, const png_size_t row_bytes)
{
png_bytep rp, dp, pp;
png_size_t i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_UP;
for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1,
pp = png_ptr->prev_row + 1; i < row_bytes;
i++, rp++, pp++, dp++)
{
*dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
}
}
static png_size_t /* PRIVATE */
png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
const png_size_t row_bytes, const png_size_t lmins)
const png_size_t row_bytes, const png_size_t lmins)
{
png_bytep rp, dp, pp, lp;
png_uint_32 i;
@ -2315,11 +2365,15 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
png_ptr->try_row[0] = PNG_FILTER_VALUE_AVG;
for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1,
pp = png_ptr->prev_row + 1; i < bpp; i++)
pp = png_ptr->prev_row + 1; i < bpp; i++)
{
v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
}
for (lp = png_ptr->row_buf + 1; i < row_bytes; i++)
@ -2327,7 +2381,11 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2))
& 0xff);
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
if (sum > lmins) /* We are already worse, don't continue. */
break;
@ -2335,6 +2393,27 @@ png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp,
return (sum);
}
static void /* PRIVATE */
png_setup_avg_row_only(png_structrp png_ptr, const png_uint_32 bpp,
const png_size_t row_bytes)
{
png_bytep rp, dp, pp, lp;
png_uint_32 i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_AVG;
for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1,
pp = png_ptr->prev_row + 1; i < bpp; i++)
{
*dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
}
for (lp = png_ptr->row_buf + 1; i < row_bytes; i++)
{
*dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2))
& 0xff);
}
}
static png_size_t /* PRIVATE */
png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
@ -2352,7 +2431,11 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
{
v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
}
for (lp = png_ptr->row_buf + 1, cp = png_ptr->prev_row + 1; i < row_bytes;
@ -2381,7 +2464,11 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
if (sum > lmins) /* We are already worse, don't continue. */
break;
@ -2389,6 +2476,48 @@ png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp,
return (sum);
}
static void /* PRIVATE */
png_setup_paeth_row_only(png_structrp png_ptr, const png_uint_32 bpp,
const png_size_t row_bytes)
{
png_bytep rp, dp, pp, cp, lp;
png_size_t i;
png_ptr->try_row[0] = PNG_FILTER_VALUE_PAETH;
for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1,
pp = png_ptr->prev_row + 1; i < bpp; i++)
{
*dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
}
for (lp = png_ptr->row_buf + 1, cp = png_ptr->prev_row + 1; i < row_bytes;
i++)
{
int a, b, c, pa, pb, pc, p;
b = *pp++;
c = *cp++;
a = *lp++;
p = b - c;
pc = a - c;
#ifdef PNG_USE_ABS
pa = abs(p);
pb = abs(pc);
pc = abs(p + pc);
#else
pa = p < 0 ? -p : p;
pb = pc < 0 ? -pc : pc;
pc = (p + pc) < 0 ? -(p + pc) : p + pc;
#endif
p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
*dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
}
}
#endif /* WRITE_FILTER */
void /* PRIVATE */
@ -2397,7 +2526,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
#ifndef PNG_WRITE_FILTER_SUPPORTED
png_write_filtered_row(png_ptr, png_ptr->row_buf, row_info->rowbytes+1);
#else
png_byte filter_to_do = png_ptr->do_filter;
unsigned int filter_to_do = png_ptr->do_filter;
png_bytep row_buf;
png_bytep best_row;
png_uint_32 bpp;
@ -2443,32 +2572,33 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
*/
best_row = png_ptr->row_buf;
if ((filter_to_do & PNG_FILTER_NONE) != 0 && filter_to_do != PNG_FILTER_NONE)
if (PNG_SIZE_MAX/128 <= row_bytes)
{
/* Overflow can occur in the calculation, just select the lowest set
* filter.
*/
filter_to_do &= 0U-filter_to_do;
}
else if ((filter_to_do & PNG_FILTER_NONE) != 0 &&
filter_to_do != PNG_FILTER_NONE)
{
/* Overflow not possible and multiple filters in the list, including the
* 'none' filter.
*/
png_bytep rp;
png_size_t sum = 0;
png_size_t i;
int v;
if (PNG_SIZE_MAX/128 <= row_bytes)
{
for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
{
/* Check for overflow */
if (sum > PNG_SIZE_MAX/128 - 256)
break;
v = *rp;
sum += (v < 128) ? v : 256 - v;
}
}
else /* Overflow is not possible */
{
for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
{
v = *rp;
#ifdef PNG_USE_ABS
sum += 128 - abs(v - 128);
#else
sum += (v < 128) ? v : 256 - v;
#endif
}
}
@ -2479,7 +2609,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
if (filter_to_do == PNG_FILTER_SUB)
/* It's the only filter so no testing is needed */
{
(void) png_setup_sub_row(png_ptr, bpp, row_bytes, mins);
png_setup_sub_row_only(png_ptr, bpp, row_bytes);
best_row = png_ptr->try_row;
}
@ -2505,7 +2635,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
/* Up filter */
if (filter_to_do == PNG_FILTER_UP)
{
(void) png_setup_up_row(png_ptr, row_bytes, mins);
png_setup_up_row_only(png_ptr, row_bytes);
best_row = png_ptr->try_row;
}
@ -2531,7 +2661,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
/* Avg filter */
if (filter_to_do == PNG_FILTER_AVG)
{
(void) png_setup_avg_row(png_ptr, bpp, row_bytes, mins);
png_setup_avg_row_only(png_ptr, bpp, row_bytes);
best_row = png_ptr->try_row;
}
@ -2555,9 +2685,9 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
}
/* Paeth filter */
if ((filter_to_do == PNG_FILTER_PAETH) != 0)
if (filter_to_do == PNG_FILTER_PAETH)
{
(void) png_setup_paeth_row(png_ptr, bpp, row_bytes, mins);
png_setup_paeth_row_only(png_ptr, bpp, row_bytes);
best_row = png_ptr->try_row;
}
@ -2589,7 +2719,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
/* Do the actual writing of a previously filtered row. */
static void
png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
png_size_t full_row_length/*includes filter byte*/)
png_size_t full_row_length/*includes filter byte*/)
{
png_debug(1, "in png_write_filtered_row");

4
projects/vstudio/README.txt
View File

@ -1,7 +1,7 @@
VisualStudio instructions
libpng version 1.6.23 - June 9, 2016
libpng version 1.6.24 - August 4, 2016
Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson
@ -93,3 +93,5 @@ as follows:
DLL /MD /MDd
Static Library /MD /MDd
Also, be sure to build libpng, zlib, and your project all for the same
platform (e.g., 32-bit or 64-bit).

24
projects/vstudio/libpng/libpng.vcxproj
View File

@ -84,7 +84,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>Use</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
@ -97,9 +97,9 @@
<BrowseInformation>true</BrowseInformation>
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<Optimization>Disabled</Optimization>
<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
</ClCompile>
@ -114,7 +114,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
<PrecompiledHeader>Use</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
@ -128,9 +128,9 @@
<BrowseInformation>true</BrowseInformation>
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
</ClCompile>
<Link>
@ -140,7 +140,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>Use</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<FunctionLevelLinking>true</FunctionLevelLinking>
@ -153,9 +153,9 @@
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<Optimization>Full</Optimization>
</ClCompile>
<Link>
@ -170,7 +170,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>Use</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
@ -184,9 +184,9 @@
<CompileAs>CompileAsC</CompileAs>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<AdditionalIncludeDirectories>$(ZLibSrcDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<Optimization>Full</Optimization>
<WholeProgramOptimization>true</WholeProgramOptimization>
</ClCompile>

2
projects/vstudio/pnglibconf/pnglibconf.vcxproj
View File

@ -30,7 +30,7 @@
</PropertyGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level3</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>

24
projects/vstudio/pngstest/pngstest.vcxproj
View File

@ -76,16 +76,16 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -109,7 +109,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
@ -117,9 +117,9 @@
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -141,7 +141,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -149,9 +149,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>
@ -176,7 +176,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -185,9 +185,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>

24
projects/vstudio/pngtest/pngtest.vcxproj
View File

@ -76,16 +76,16 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -109,7 +109,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
@ -117,9 +117,9 @@
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -141,7 +141,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -149,9 +149,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>
@ -176,7 +176,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -185,9 +185,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>

24
projects/vstudio/pngunknown/pngunknown.vcxproj
View File

@ -76,16 +76,16 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -109,7 +109,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
@ -117,9 +117,9 @@
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -141,7 +141,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -149,9 +149,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>
@ -176,7 +176,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -185,9 +185,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>

24
projects/vstudio/pngvalid/pngvalid.vcxproj
View File

@ -76,16 +76,16 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -109,7 +109,7 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
<ClCompile>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<MinimalRebuild>false</MinimalRebuild>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
@ -117,9 +117,9 @@
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<IntrinsicFunctions>true</IntrinsicFunctions>
<StringPooling>true</StringPooling>
<FunctionLevelLinking>false</FunctionLevelLinking>
@ -141,7 +141,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -149,9 +149,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;PNG_USE_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>
@ -176,7 +176,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<PrecompiledHeader>NotUsing</PrecompiledHeader>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
@ -185,9 +185,9 @@
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
<DisableSpecificWarnings>$(DisableSpecificWarnings)</DisableSpecificWarnings>
<CompileAsManaged>false</CompileAsManaged>
<TreatWarningAsError>true</TreatWarningAsError>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<StringPooling>true</StringPooling>
<MinimalRebuild>false</MinimalRebuild>
<BrowseInformation>true</BrowseInformation>

15
projects/vstudio/zlib.props
View File

@ -2,7 +2,7 @@
<!--
* zlib.props - location of zlib source
*
* libpng version 1.6.23 - June 9, 2016
* libpng version 1.6.24 - August 4, 2016
*
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
*
@ -41,5 +41,18 @@
test it:
-->
<WindowsSDKDesktopARMSupport>true</WindowsSDKDesktopARMSupport>
<!-- The following lines provide a global (solution level) control of the
warnings issued by the compiler, these are used in the individual
project files (*/*.vcxproj) with, for zlib, some extra disables.
Different versions of Visual Studio may require different settings,
these settings work with Visual Studio 2013. Just set
TreatWarningAsError to false to check the build without failing on
errors.
-->
<WarningLevel>EnableAllWarnings</WarningLevel>
<TreatWarningAsError>true</TreatWarningAsError>
<DisableSpecificWarnings>4255;4668;4710;4711;4746;4820;4996</DisableSpecificWarnings>
</PropertyGroup>
</Project>

18
projects/vstudio/zlib/zlib.vcxproj
View File

@ -88,11 +88,13 @@
<ClCompile>
<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;Z_SOLO;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
<WarningLevel>TurnOffAllWarnings</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BrowseInformation>true</BrowseInformation>
<FunctionLevelLinking>true</FunctionLevelLinking>
<DisableSpecificWarnings>$(DisableSpecificWarnings);4127;4131;4242;4244</DisableSpecificWarnings>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
</ClCompile>
<Link>
<TargetMachine>MachineX86</TargetMachine>
@ -103,11 +105,13 @@
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;Z_SOLO;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<WarningLevel>TurnOffAllWarnings</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<BrowseInformation>true</BrowseInformation>
<FunctionLevelLinking>true</FunctionLevelLinking>
<DisableSpecificWarnings>$(DisableSpecificWarnings);4127;4131;4242;4244</DisableSpecificWarnings>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
</ClCompile>
<Link>
@ -118,7 +122,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
<ClCompile>
<WarningLevel>Level3</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
<IntrinsicFunctions>true</IntrinsicFunctions>
@ -126,7 +130,8 @@
<BufferSecurityCheck>false</BufferSecurityCheck>
<BrowseInformation>true</BrowseInformation>
<FunctionLevelLinking>true</FunctionLevelLinking>
<TreatWarningAsError>true</TreatWarningAsError>
<DisableSpecificWarnings>$(DisableSpecificWarnings);4127;4131;4242;4244</DisableSpecificWarnings>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<RuntimeLibrary>MultiThreaded</RuntimeLibrary>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;Z_SOLO;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
@ -141,7 +146,7 @@
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level3</WarningLevel>
<WarningLevel>$(WarningLevel)</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Full</Optimization>
<IntrinsicFunctions>true</IntrinsicFunctions>
@ -149,7 +154,8 @@
<BufferSecurityCheck>false</BufferSecurityCheck>
<BrowseInformation>true</BrowseInformation>
<FunctionLevelLinking>true</FunctionLevelLinking>
<TreatWarningAsError>true</TreatWarningAsError>
<DisableSpecificWarnings>$(DisableSpecificWarnings);4127;4131;4242;4244</DisableSpecificWarnings>
<TreatWarningAsError>$(TreatWarningAsError)</TreatWarningAsError>
<PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;Z_SOLO;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>

10
scripts/README.txt
View File

@ -1,9 +1,9 @@
Makefiles for libpng version 1.6.23 - June 9, 2016
Makefiles for libpng version 1.6.24 - August 4, 2016
pnglibconf.h.prebuilt => Stores configuration settings
makefile.linux => Linux/ELF makefile
(gcc, creates libpng16.so.16.1.6.23)
(gcc, creates libpng16.so.16.1.6.24)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
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.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.sggcc => Silicon Graphics (gcc,
creates libpng16.so.16.1.6.23)
creates libpng16.so.16.1.6.24)
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng16.so.16.1.6.23)
creates libpng16.so.16.1.6.24)
makefile.so9 => Solaris 9 makefile (gcc,
creates libpng16.so.16.1.6.23)
creates libpng16.so.16.1.6.24)
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.sunos => Sun makefile
makefile.32sunu => Sun Ultra 32-bit makefile

2
scripts/def.c
View File

@ -21,7 +21,7 @@ PNG_DFN "OS2 DESCRIPTION "PNG image compression library""
PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE"
PNG_DFN ""
PNG_DFN "EXPORTS"
PNG_DFN ";Version 1.6.23"
PNG_DFN ";Version 1.6.24"
#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"

2
scripts/libpng-config-head.in
View File

@ -11,7 +11,7 @@
# Modeled after libxml-config.
version=1.6.23
version=1.6.24
prefix=""
libdir=""
libs=""

2
scripts/libpng.pc.in
View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
Name: libpng
Description: Loads and saves PNG files
Version: 1.6.23
Version: 1.6.24
Libs: -L${libdir} -lpng16
Cflags: -I${includedir}

2
scripts/makefile.cegcc
View File

@ -23,7 +23,7 @@
VERMAJ = 1
VERMIN = 6
VERMIC = 23
VERMIC = 24
VER = $(VERMAJ).$(VERMIN).$(VERMIC)
NAME = libpng
PACKAGE = $(NAME)-$(VER)

2
scripts/makefile.linux
View File

@ -10,7 +10,7 @@
# Library name:
LIBNAME = libpng16
PNGMAJ = 16
RELEASE = 23
RELEASE = 24
# Shared library names:
LIBSO=$(LIBNAME).so

2
scripts/makefile.msys
View File

@ -18,7 +18,7 @@ exec_prefix=$(prefix)
# Library name:
LIBNAME = libpng16
PNGMAJ = 16
RELEASE = 23
RELEASE = 24
# Shared library names:
LIBSO=$(LIBNAME).dll

2
scripts/makefile.ne12bsd
View File

@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng16
LIB= png16
SHLIB_MAJOR= 0
SHLIB_MINOR= 1.6.23
SHLIB_MINOR= 1.6.24
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.netbsd
View File

@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
LIB= png
SHLIB_MAJOR= 16
SHLIB_MINOR= 1.6.23
SHLIB_MINOR= 1.6.24
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.openbsd
View File

@ -11,7 +11,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 16
SHLIB_MINOR= 1.6.23
SHLIB_MINOR= 1.6.24
LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \

1
scripts/pnglibconf.dfa
View File

@ -552,6 +552,7 @@ option WRITE_ANCILLARY_CHUNKS requires WRITE
# These options disable *all* the text chunks if turned off
option TEXT disabled
option READ_TEXT requires READ_ANCILLARY_CHUNKS enables TEXT
option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT

4
scripts/pnglibconf.h.prebuilt
View File

@ -1,8 +1,8 @@
/* libpng 1.6.23 STANDARD API DEFINITION */
/* libpng 1.6.24 STANDARD API DEFINITION */
/* pnglibconf.h - library build configuration */
/* Libpng version 1.6.23 - June 9, 2016 */
/* Libpng version 1.6.24 - August 4, 2016 */
/* Copyright (c) 1998-2015 Glenn Randers-Pehrson */

2
scripts/symbols.def
View File

@ -1,4 +1,4 @@
;Version 1.6.23
;Version 1.6.24
;--------------------------------------------------------------
; LIBPNG symbol list as a Win32 DEF file
; Contains all the symbols that can be exported from libpng