Update NEWS.md for v2.1.2

Malformed PNM file could cause a crash in opj_compress.
Checks were added to prevent this.

Fixes #843
Updates #440

.travis.yml

@@ -1,21 +1,90 @@
 language: c
-  
-env:
-  global:
-    - secure: "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"
 
-addons:
-  coverity_scan:
-    project:
-      name: "uclouvain/openjpeg"
-      description: "Build submitted via Travis CI"
-    notification_email: info@openjpeg.org
-    build_command_prepend: "mkdir build &&  cd build && cmake -G 'Unix Makefiles' -DBUILD_CODEC=ON -DBUILD_THIRDPARTY=ON .."
-    build_command:   "make -j 4"
-    branch_pattern: coverity_scan
+matrix:
+  include:
+    - os: osx
+      compiler: clang
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Release OPJ_CI_INCLUDE_IF_DEPLOY=1
+    - os: linux
+      compiler: gcc
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Release OPJ_CI_INCLUDE_IF_DEPLOY=1
+    - os: linux
+      compiler: gcc
+      env: OPJ_CI_ARCH=i386 OPJ_CI_BUILD_CONFIGURATION=Release
+      addons:
+        apt:
+          packages:
+            - gcc-multilib
+    - os: linux
+      compiler: gcc
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Debug
+    - os: linux
+      compiler: clang
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Debug OPJ_CI_ASAN=1
+    - os: linux
+      compiler: clang-3.8
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Release
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-precise-3.8
+            - ubuntu-toolchain-r-test
+          packages:
+            - clang-3.8
+    - os: linux
+      compiler: x86_64-w64-mingw32-gcc
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Release
+      addons:
+        apt:
+          packages:
+            - gcc-mingw-w64-base
+            - binutils-mingw-w64-x86-64
+            - gcc-mingw-w64-x86-64
+            - gcc-mingw-w64
+    - os: linux
+      compiler: x86_64-w64-mingw32-gcc
+      env: OPJ_CI_ARCH=i386 OPJ_CI_BUILD_CONFIGURATION=Release
+      addons:
+        apt:
+          packages:
+            - gcc-mingw-w64-base
+            - binutils-mingw-w64-i686
+            - gcc-mingw-w64-i686
+            - gcc-mingw-w64      
+    - os: linux
+      compiler: gcc-4.8
+      env: OPJ_CI_ABI_CHECK=1
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - gcc-4.8
+            - libelf-dev
+            - elfutils
+            - texinfo
+            - exuberant-ctags
 
 install:
-  - echo "Coverity scan build"
+  - ./tools/travis-ci/install.sh
 
 script:
-  - echo "Coverity scan build"
+  - ./tools/travis-ci/run.sh
+  - ./tools/travis-ci/abi-check.sh
+
+before_deploy:
+  - export OPJ_RELEASE_PKG_FILE=$(ls build/openjpeg-${TRAVIS_TAG}*)
+  - echo "deploying $OPJ_RELEASE_PKG_FILE to GitHub releases"
+
+deploy:
+  provider: releases
+  api_key:
+    secure: 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
+  file_glob: true
+  file: "${OPJ_RELEASE_PKG_FILE}"
+  skip_cleanup: true
+  on:
+    repo: uclouvain/openjpeg
+    tags: true
+    condition: "$OPJ_CI_INCLUDE_IF_DEPLOY = 1"
+

CHANGELOG.md

@@ -1,5 +1,60 @@
 # Changelog
 
+## [v2.1.2](https://github.com/uclouvain/openjpeg/releases/v2.1.2) (2016-09-28)
+[Full Changelog](https://github.com/uclouvain/openjpeg/compare/v2.1.1...v2.1.2)
+
+**Closed issues:**
+
+- null ptr dereference in convert.c:1331 [\#843](https://github.com/uclouvain/openjpeg/issues/843)
+- Out-of-Bounds Read in function bmp24toimage of convertbmp.c [\#833](https://github.com/uclouvain/openjpeg/issues/833)
+- Disable automatic compilation of t1\_generate\_luts in CMakeLists.txt [\#831](https://github.com/uclouvain/openjpeg/issues/831)
+- CVE-2016-7163 Integer overflow in opj\_pi\_create\_decode [\#826](https://github.com/uclouvain/openjpeg/issues/826)
+- Security Advisory for OpenJPEG [\#810](https://github.com/uclouvain/openjpeg/issues/810)
+- Add dashboard with static lib [\#804](https://github.com/uclouvain/openjpeg/issues/804)
+- hidden visibility for the static library / building with -DOPJ\_STATIC against shared lib [\#802](https://github.com/uclouvain/openjpeg/issues/802)
+- Optimization when building library from source [\#799](https://github.com/uclouvain/openjpeg/issues/799)
+- unsigned int16 on Solaris 11.2/sparc [\#796](https://github.com/uclouvain/openjpeg/issues/796)
+- appveyor [\#793](https://github.com/uclouvain/openjpeg/issues/793)
+- Please make a new release [\#782](https://github.com/uclouvain/openjpeg/issues/782)
+- FFMpeg will not link to 2.1.1 release built as shared library [\#766](https://github.com/uclouvain/openjpeg/issues/766)
+- API change since v2: opj\_event\_mgr\_t not available [\#754](https://github.com/uclouvain/openjpeg/issues/754)
+- openjpeg.h needs dependencies [\#673](https://github.com/uclouvain/openjpeg/issues/673)
+- "master" does not build on ubuntu [\#658](https://github.com/uclouvain/openjpeg/issues/658)
+- Package 'openjp2', required by 'libopenjpip', not found [\#594](https://github.com/uclouvain/openjpeg/issues/594)
+
+**Merged pull requests:**
+
+- Fix PNM file reading [\#847](https://github.com/uclouvain/openjpeg/pull/847) ([mayeut](https://github.com/mayeut))
+- Fix some issues reported by Coverity Scan [\#846](https://github.com/uclouvain/openjpeg/pull/846) ([stweil](https://github.com/stweil))
+- Fix potential out-of-bounds read \(coverity\)  [\#844](https://github.com/uclouvain/openjpeg/pull/844) ([stweil](https://github.com/stweil))
+- Remove TODO for overflow check [\#842](https://github.com/uclouvain/openjpeg/pull/842) ([mayeut](https://github.com/mayeut))
+- Add overflow checks for opj\_aligned\_malloc [\#841](https://github.com/uclouvain/openjpeg/pull/841) ([mayeut](https://github.com/mayeut))
+- Flags in T1 shall be unsigned [\#840](https://github.com/uclouvain/openjpeg/pull/840) ([mayeut](https://github.com/mayeut))
+- Fix some warnings [\#838](https://github.com/uclouvain/openjpeg/pull/838) ([mayeut](https://github.com/mayeut))
+- Fix issue 833. [\#834](https://github.com/uclouvain/openjpeg/pull/834) ([trylab](https://github.com/trylab))
+- Add overflow checks for opj\_aligned\_malloc [\#832](https://github.com/uclouvain/openjpeg/pull/832) ([mayeut](https://github.com/mayeut))
+- Add test for issue 820 [\#829](https://github.com/uclouvain/openjpeg/pull/829) ([mayeut](https://github.com/mayeut))
+- Add test for issue 826 [\#827](https://github.com/uclouvain/openjpeg/pull/827) ([mayeut](https://github.com/mayeut))
+- Fix coverity 113065 \(CWE-484\) [\#824](https://github.com/uclouvain/openjpeg/pull/824) ([mayeut](https://github.com/mayeut))
+- Add sanity check for tile coordinates [\#823](https://github.com/uclouvain/openjpeg/pull/823) ([mayeut](https://github.com/mayeut))
+- Add test for PR 818 [\#822](https://github.com/uclouvain/openjpeg/pull/822) ([mayeut](https://github.com/mayeut))
+- Update to libpng 1.6.25 [\#821](https://github.com/uclouvain/openjpeg/pull/821) ([mayeut](https://github.com/mayeut))
+- fix incrementing of "l\_tcp-\>m\_nb\_mcc\_records" in opj\_j2k\_read\_mcc [\#820](https://github.com/uclouvain/openjpeg/pull/820) ([mayeut](https://github.com/mayeut))
+- Add overflow check in opj\_tcd\_init\_tile [\#819](https://github.com/uclouvain/openjpeg/pull/819) ([mayeut](https://github.com/mayeut))
+- Fix leak & invalid behavior of opj\_jp2\_read\_ihdr [\#818](https://github.com/uclouvain/openjpeg/pull/818) ([mayeut](https://github.com/mayeut))
+- Add overflow check in opj\_j2k\_update\_image\_data [\#817](https://github.com/uclouvain/openjpeg/pull/817) ([mayeut](https://github.com/mayeut))
+- Change 'restrict' define to 'OPJ\_RESTRICT' [\#816](https://github.com/uclouvain/openjpeg/pull/816) ([mayeut](https://github.com/mayeut))
+- Switch to clang 3.8 [\#814](https://github.com/uclouvain/openjpeg/pull/814) ([mayeut](https://github.com/mayeut))
+- Fix an integer overflow issue [\#809](https://github.com/uclouvain/openjpeg/pull/809) ([trylab](https://github.com/trylab))
+- Update to lcms 2.8 [\#808](https://github.com/uclouvain/openjpeg/pull/808) ([mayeut](https://github.com/mayeut))
+- Update to libpng 1.6.24 [\#807](https://github.com/uclouvain/openjpeg/pull/807) ([mayeut](https://github.com/mayeut))
+- Reenable clang-3.9 build on travis [\#806](https://github.com/uclouvain/openjpeg/pull/806) ([mayeut](https://github.com/mayeut))
+- Bit fields type [\#805](https://github.com/uclouvain/openjpeg/pull/805) ([smuehlst](https://github.com/smuehlst))
+- Add compilation test for standalone inclusion of openjpeg.h [\#798](https://github.com/uclouvain/openjpeg/pull/798) ([mayeut](https://github.com/mayeut))
+- jpwl: Remove non-portable data type u\_int16\_t \(fix issue \#796\) [\#797](https://github.com/uclouvain/openjpeg/pull/797) ([stweil](https://github.com/stweil))
+- Fix dependency for pkg-config \(issue \#594\) [\#795](https://github.com/uclouvain/openjpeg/pull/795) ([stweil](https://github.com/stweil))
+- Add .gitignore [\#787](https://github.com/uclouvain/openjpeg/pull/787) ([stweil](https://github.com/stweil))
+
 ## [v2.1.1](https://github.com/uclouvain/openjpeg/releases/tag/v2.1.1) (2016-07-05)
 [Full Changelog](https://github.com/uclouvain/openjpeg/compare/version.2.1...v2.1.1)
 

CMakeLists.txt

@@ -33,7 +33,7 @@ include_regular_expression("^.*$")
 # OPENJPEG version number, useful for packaging and doxygen doc:
 set(OPENJPEG_VERSION_MAJOR 2)
 set(OPENJPEG_VERSION_MINOR 1)
-set(OPENJPEG_VERSION_BUILD 1)
+set(OPENJPEG_VERSION_BUILD 2)
 set(OPENJPEG_VERSION
   "${OPENJPEG_VERSION_MAJOR}.${OPENJPEG_VERSION_MINOR}.${OPENJPEG_VERSION_BUILD}")
 set(PACKAGE_VERSION
@@ -53,6 +53,7 @@ set(PACKAGE_VERSION
 #   2.0.1 |  6
 #   2.1   |  7
 #   2.1.1 |  7
+#   2.1.2 |  7
 # above is the recommendation by the OPJ team. If you really need to override this default,
 # you can specify your own OPENJPEG_SOVERSION at cmake configuration time:
 # cmake -DOPENJPEG_SOVERSION:STRING=42 /path/to/openjpeg
@@ -67,7 +68,7 @@ set(OPENJPEG_LIBRARY_PROPERTIES
 # --------------------------------------------------------------------------
 # Path to additional CMake modules
 set(CMAKE_MODULE_PATH
-    ${CMAKE_SOURCE_DIR}/cmake
+    ${${OPENJPEG_NAMESPACE}_SOURCE_DIR}/cmake
     ${CMAKE_MODULE_PATH})
 
 # --------------------------------------------------------------------------
@@ -163,8 +164,8 @@ TEST_BIG_ENDIAN(OPJ_BIG_ENDIAN)
 #-----------------------------------------------------------------------------
 # Setup file for setting custom ctest vars
 configure_file(
-  ${CMAKE_SOURCE_DIR}/cmake/CTestCustom.cmake.in
-  ${CMAKE_BINARY_DIR}/CTestCustom.cmake
+  ${${OPENJPEG_NAMESPACE}_SOURCE_DIR}/cmake/CTestCustom.cmake.in
+  ${${OPENJPEG_NAMESPACE}_BINARY_DIR}/CTestCustom.cmake
   @ONLY
   )
 
@@ -226,7 +227,7 @@ CHECK_INCLUDE_FILE("unistd.h"       HAVE_UNISTD_H)
 include(TestLargeFiles)
 OPJ_TEST_LARGE_FILES(OPJ_HAVE_LARGEFILES)
 
-# Allocating Aligned Memory Blocks
+# Allocating Aligned Memory Blocks
 include(CheckIncludeFiles)
 check_include_files(malloc.h OPJ_HAVE_MALLOC_H)
 include(CheckSymbolExists)
@@ -249,6 +250,7 @@ if(BUILD_JPIP_SERVER)
   endif()
 endif()
 add_subdirectory(src/lib)
+option(BUILD_LUTS_GENERATOR "Build utility to generate t1_luts.h" OFF)
 
 #-----------------------------------------------------------------------------
 # Build Applications
@@ -322,8 +324,8 @@ endif()
 #-----------------------------------------------------------------------------
 # install all targets referenced as OPENJPEGTargets
 install(EXPORT OpenJPEGTargets DESTINATION ${OPENJPEG_INSTALL_PACKAGE_DIR})
-configure_file( ${OPENJPEG_SOURCE_DIR}/cmake/OpenJPEGConfig.cmake.in
-  ${OPENJPEG_BINARY_DIR}/OpenJPEGConfig.cmake
+configure_file( ${${OPENJPEG_NAMESPACE}_SOURCE_DIR}/cmake/OpenJPEGConfig.cmake.in
+  ${${OPENJPEG_NAMESPACE}_BINARY_DIR}/OpenJPEGConfig.cmake
   @ONLY
 )
 install( FILES ${OPENJPEG_BINARY_DIR}/OpenJPEGConfig.cmake

NEWS.md

@@ -2,6 +2,11 @@
 
 More details in the [Changelog](https://github.com/uclouvain/openjpeg/blob/master/CHANGELOG.md)
 
+## OpenJPEG 2.1.2
+
+* Bug fixes (including security fixes)
+* No API/ABI break compared to v2.1.1
+
 ## OpenJPEG 2.1.1
 
 * Huge amount of critical bugfixes

README.md

@@ -73,10 +73,10 @@ API available is the one supported by OpenJPEG.
 [comment-license]: https://img.shields.io/github/license/uclouvain/openjpeg.svg "https://img.shields.io/badge/license-BSD--2--Clause-blue.svg"
 [badge-license]: https://img.shields.io/badge/license-BSD--2--Clause-blue.svg "BSD 2-clause "Simplified" License"
 [link-license]: https://github.com/uclouvain/openjpeg/blob/master/LICENSE "BSD 2-clause "Simplified" License"
-[badge-build]: https://travis-ci.org/uclouvain/openjpeg.svg?branch=master "Build Status"
+[badge-build]: https://travis-ci.org/uclouvain/openjpeg.svg?branch=openjpeg-2.1 "Build Status"
 [link-build]: https://travis-ci.org/uclouvain/openjpeg "Build Status"
-[badge-msvc-build]: https://ci.appveyor.com/api/projects/status/github/uclouvain/openjpeg?branch=master&svg=true "Windows Build Status"
-[link-msvc-build]: https://ci.appveyor.com/project/detonin/openjpeg/branch/master "Windows Build Status"
+[badge-msvc-build]: https://ci.appveyor.com/api/projects/status/github/uclouvain/openjpeg?branch=openjpeg-2.1&svg=true "Windows Build Status"
+[link-msvc-build]: https://ci.appveyor.com/project/detonin/openjpeg/branch/openjpeg-2.1 "Windows Build Status"
 [badge-coverity]: https://scan.coverity.com/projects/6383/badge.svg "Coverity Scan Build Status"
 [link-coverity]: https://scan.coverity.com/projects/uclouvain-openjpeg "Coverity Scan Build Status"
 [link-api-timeline]: http://www.openjpeg.org/abi-check/timeline/openjpeg "OpenJPEG API/ABI timeline"

doc/man/man1/opj_compress.1

@@ -32,7 +32,7 @@
 .TH opj_compress 1 "Version 2.1.1" "opj_compress" "converts to jpeg2000 files"
 .P
 .SH NAME
-opj_compress - 
+opj_compress \- 
 This program reads in an image of a certain type and converts it to a
 jpeg2000 file. It is part of the OpenJPEG library.
 .SP
@@ -43,20 +43,20 @@ Valid output image extensions are
 .B .j2k, .jp2
 .SH SYNOPSIS
 .P
-.B opj_compress -i \fRinfile.bmp \fB-o \fRoutfile.j2k
+.B opj_compress \-i \fRinfile.bmp \fB-o \fRoutfile.j2k
 .P
-.B opj_compress -ImgDir \fRdirectory_name \fB-OutFor \fRjp2
+.B opj_compress \-ImgDir \fRdirectory_name \fB-OutFor \fRjp2
 .P
-.B opj_compress -h \fRPrint a help message and exit.
+.B opj_compress \-h \fRPrint a help message and exit.
 .P
 .R See JPWL OPTIONS for special options
 .SH OPTIONS
 .TP
 .B \-\^b " n,n"
-(Size of code block (e.g. -b 32,32). Default: 64 x 64)
+(Size of code block (e.g. \-b 32,32). Default: 64 x 64)
 .TP
 .B \-\^c " n"
-(Size of precinct (e.g. -c 128,128). Default: 2^15 x 2^15)
+(Size of precinct (e.g. \-c 128,128). Default: 2^15 x 2^15)
 .TP
 .B \-\^cinema2K " fps"
 Digital Cinema 2K profile compliant codestream. Valid \fBfps\fR values are 24 or 48.
@@ -65,7 +65,7 @@ Digital Cinema 2K profile compliant codestream. Valid \fBfps\fR values are 24 or
 Digital Cinema 4K profile compliant codestream. Does not need an fps: default is 24 fps.
 .TP
 .B \-\^d " X,Y"
-(Offset of image origin (e.g. -d 150,300))
+(Offset of image origin (e.g. \-d 150,300))
 .TP
 .B \-\^h
 Print a help message and exit.
@@ -85,20 +85,20 @@ Progression order. \fBname\fR can be one out of:LRCP, RLCP, RPCL, PCRL, CPRL. De
 .B \-\^q " n"
 different psnr for successive layers
 .br
-.B Note: \fR(options -r and -q cannot be used together)
+.B Note: \fR(options \-r and \-q cannot be used together)
 .TP
 .B \-\^r " n"
 different compression ratio(s) for successive layers. The rate specified for each quality level is the desired compression factor.
 .br
-.B Note: \fR(options -r and -q cannot be used together)
+.B Note: \fR(options \-r and \-q cannot be used together)
 .TP
 .B \-\^s " X,Y"
-sub-sampling factor (e.g. -s 2,2). Default: No sub-sampling in x or y direction.
+sub-sampling factor (e.g. \-s 2,2). Default: No sub-sampling in x or y direction.
 .br
 .B Remark: \fRsub-sampling bigger than 2 can produce errors.
 .TP
 .B \-\^t " W,H"
-(Size of tile (e.g. -t 512,512) )
+(Size of tile (e.g. \-t 512,512) )
 .TP
 .B \-\^x " name"
 (Create index file and fill it. Default: no index file)
@@ -132,7 +132,7 @@ ERTERM(16)
 .br
 SEGMARK(32)
 .br
-Values can be added: RESTART(4) + RESET(2) + SEGMARK(32) = -M 38
+Values can be added: RESTART(4) + RESET(2) + SEGMARK(32) = \-M 38
 .TP
 .B \-\^OutFor "ext"
 (extension for output files)
@@ -149,7 +149,7 @@ e.g. \fB-ROI c=0,U=25\fR
 (Write SOP marker before each packet. Default: No SOP marker in the codestream.)
 .TP
 .B \-\^T "X,Y"
-(Offset of the origin of the tiles (e.g. -T 100,75) )
+(Offset of the origin of the tiles (e.g. \-T 100,75) )
 .TP
 .B \-\^W
 (see JPWL OPTIONS)
@@ -157,7 +157,7 @@ e.g. \fB-ROI c=0,U=25\fR
 .SH JPWL OPTIONS
 Options usable only if the library has been compiled with \fB-DUSE_JPWL\fR
 .P
-.B      -W h<tilepart><=type>, s<tilepart><=method>, a=<addr>, z=<size>, g=<range>, p<tilepart:pack><=type>
+.B      \-W h<tilepart><=type>, s<tilepart><=method>, a=<addr>, z=<size>, g=<range>, p<tilepart:pack><=type>
 .P
 .B h\fR selects the header error protection (EPB): \fBtype\fR can be
    [0=none 1,absent=predefined 16=CRC-16 32=CRC-32 37-128=RS]
@@ -176,7 +176,7 @@ Options usable only if the library has been compiled with \fB-DUSE_JPWL\fR
      (max. 16 specs)
 .P
 .B s \fRenables sensitivity data insertion (ESD): \fBmethod\fR can be
-   [-1=NO ESD 0=RELATIVE ERROR 1=MSE 2=MSE REDUCTION 3=PSNR
+   [\-1=NO ESD 0=RELATIVE ERROR 1=MSE 2=MSE REDUCTION 3=PSNR
     4=PSNR INCREMENT 5=MAXERR 6=TSE 7=RESERVED]
    if \fBtilepart\fR is absent, it is for main header only
    if \fBtilepart\fR is present, it applies from that tile
@@ -194,13 +194,13 @@ Options usable only if the library has been compiled with \fB-DUSE_JPWL\fR
 .P
 .SH EXAMPLES
 .P
-.B opj_compress -i \fRfile.bmp \fB-o \fRfile.j2k \fB-r \fR20,10,1 (compress 20x, then 10x, then lossless).
+.B opj_compress \-i \fRfile.bmp \fB-o \fRfile.j2k \fB-r \fR20,10,1 (compress 20x, then 10x, then lossless).
 .P
-.B opj_compress -i \fRfile.ppm \fB-o \fRfile.j2k \fB-q \fR30,40,50
+.B opj_compress \-i \fRfile.ppm \fB-o \fRfile.j2k \fB-q \fR30,40,50
 .P
-.B opj_compress -i \fRfile.pgx \fB-o \fRfile.j2k \fB-POC \fRT1=0,0,1,5,3,CPRL
+.B opj_compress \-i \fRfile.pgx \fB-o \fRfile.j2k \fB-POC \fRT1=0,0,1,5,3,CPRL
 .P
-.B opj_compress -i \fRlena.raw \fB-o \fRlena.j2k \fB-F \fR512,512,3,8,u
+.B opj_compress \-i \fRlena.raw \fB-o \fRlena.j2k \fB-F \fR512,512,3,8,u
 .P
 .SH AUTHORS
 Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium

doc/man/man1/opj_decompress.1

@@ -32,7 +32,7 @@
 .TH opj_decompress 1 "Version 2.1.1" "opj_decompress" "converts jpeg2000 files"
 .P
 .SH NAME
-opj_decompress - 
+opj_decompress \- 
 This program reads in a jpeg2000 image and converts it to another 
 image type. It is part of the OpenJPEG library.
 .SP
@@ -43,11 +43,11 @@ Valid output image extensions are
 .B .bmp, .pgm, .pgx, .png, .pnm, .ppm, .raw, .tga, .tif \fR. For PNG resp. TIF it needs libpng resp. libtiff .
 .SH SYNOPSIS
 .P
-.B opj_decompress -i \fRinfile.j2k \fB-o \fRoutfile.png
+.B opj_decompress \-i \fRinfile.j2k \fB-o \fRoutfile.png
 .P
-.B opj_decompress -ImgDir \fRimages/ \fB-OutFor \fRbmp
+.B opj_decompress \-ImgDir \fRimages/ \fB-OutFor \fRbmp
 .P
-.B opj_decompress -h  \fRPrint help message and exit
+.B opj_decompress \-h  \fRPrint help message and exit
 .P
 .R See JPWL OPTIONS for special options
 .SH OPTIONS

doc/man/man1/opj_dump.1

@@ -32,7 +32,7 @@
 .TH opj_dump 1 "Version 2.1.1" "opj_dump" "dumps jpeg2000 files"
 .P
 .SH NAME
-opj_dump - 
+opj_dump \- 
 This program reads in a jpeg2000 image and dumps the contents to stdout. It is part of the OpenJPEG library.
 .SP
 Valid input image extensions are
@@ -40,11 +40,11 @@ Valid input image extensions are
 .SP
 .SH SYNOPSIS
 .P
-.B opj_dump -i \fRinfile.j2k 
+.B opj_dump \-i \fRinfile.j2k 
 .P
-.B opj_dump -ImgDir \fRimages/ \fRDump all files in images/
+.B opj_dump \-ImgDir \fRimages/ \fRDump all files in images/
 .P
-.B opj_dump -h  \fRPrint help message and exit
+.B opj_dump \-h  \fRPrint help message and exit
 .P
 .SH OPTIONS
 .TP

src/bin/jp2/convert.c

@@ -1328,11 +1328,14 @@ struct pnm_header
 
 static char *skip_white(char *s)
 {
-    while(*s)
+    if (s != NULL)
     {
-        if(*s == '\n' || *s == '\r') return NULL;
-        if(isspace(*s)) { ++s; continue; }
-        return s;
+        while(*s)
+        {
+            if(*s == '\n' || *s == '\r') return NULL;
+            if(isspace(*s)) { ++s; continue; }
+            return s;
+        }
     }
     return NULL;
 }
@@ -1377,7 +1380,7 @@ static char *skip_idf(char *start, char out_idf[256])
 
 static void read_pnm_header(FILE *reader, struct pnm_header *ph)
 {
-    int format, have_wh, end, ttype;
+    int format, end, ttype;
     char idf[256], type[256];
     char line[256];
 
@@ -1398,11 +1401,12 @@ static void read_pnm_header(FILE *reader, struct pnm_header *ph)
         return;
     }
     ph->format = format;
-    ttype = end = have_wh = 0;
+    ttype = end = 0;
 
     while(fgets(line, 250, reader))
     {
         char *s;
+        int allow_null = 0;
 
         if(*line == '#') continue;
 
@@ -1478,36 +1482,25 @@ static void read_pnm_header(FILE *reader, struct pnm_header *ph)
             return;
         } /* if(format == 7) */
 
-        if( !have_wh)
-        {
+        /* Here format is in range [1,6] */
+        if (ph->width == 0) {
             s = skip_int(s, &ph->width);
-
+            if ((s == NULL) || (*s == 0) || (ph->width < 1)) return;
+            allow_null = 1;
+        }
+        if (ph->height == 0) {
             s = skip_int(s, &ph->height);
-
-            have_wh = 1;
-
-            if(format == 1 || format == 4) break;
-					
-            if(format == 2 || format == 3 || format == 5 || format == 6)
-            {
-                if (skip_int(s, &ph->maxval) != NULL) {
-                    if(ph->maxval > 65535) {
-                        return;
-                    }
-                    else {
-                        break;
-                    }
-                }
+            if ((s == NULL) && allow_null) continue;
+            if ((s == NULL) || (*s == 0) || (ph->height < 1)) return;
+            if(format == 1 || format == 4) {
+                break;
             }
-            continue;
-        }
-        if(format == 2 || format == 3 || format == 5 || format == 6)
-        {
-            /* P2, P3, P5, P6: */
-            s = skip_int(s, &ph->maxval);
-
-            if(ph->maxval > 65535) return;
+            allow_null = 1;
         }
+        /* here, format is in P2, P3, P5, P6 */
+        s = skip_int(s, &ph->maxval);
+        if ((s == NULL) && allow_null) continue;
+        if ((s == NULL) || (*s == 0)) return;
         break;
     }/* while(fgets( ) */
     if(format == 2 || format == 3 || format > 4)
@@ -1524,18 +1517,14 @@ static void read_pnm_header(FILE *reader, struct pnm_header *ph)
         }
         if(ph->depth < 1 || ph->depth > 4) return;
 
-        if(ph->width && ph->height && ph->depth && ph->maxval && ttype)
+        if (ttype)
             ph->ok = 1;
     }
     else
     {
-        if(format != 1 && format != 4)
+        ph->ok = 1;
+        if(format == 1 || format == 4)
         {
-            if(ph->width && ph->height && ph->maxval) ph->ok = 1;
-        }
-        else
-        {
-            if(ph->width && ph->height) ph->ok = 1;
             ph->maxval = 255;
         }
     }

src/bin/jp2/convertbmp.c

@@ -675,10 +675,28 @@ opj_image_t* bmptoimage(const char *filename, opj_cparameters_t *parameters)
 		}
 	}
 	
+	if (Info_h.biWidth == 0 || Info_h.biHeight == 0) {
+		fclose(IN);
+		return NULL;
+	}
+	
+	if (Info_h.biBitCount > (((OPJ_UINT32)-1) - 31) / Info_h.biWidth) {
+		fclose(IN);
+		return NULL;
+	}
 	stride = ((Info_h.biWidth * Info_h.biBitCount + 31U) / 32U) * 4U; /* rows are aligned on 32bits */
 	if (Info_h.biBitCount == 4 && Info_h.biCompression == 2) { /* RLE 4 gets decoded as 8 bits data for now... */
+		if (8 > (((OPJ_UINT32)-1) - 31) / Info_h.biWidth) {
+			fclose(IN);
+			return NULL;
+		}
 		stride = ((Info_h.biWidth * 8U + 31U) / 32U) * 4U;
 	}
+	
+	if (stride > ((OPJ_UINT32)-1) / sizeof(OPJ_UINT8) / Info_h.biHeight) {
+		fclose(IN);
+		return NULL;
+	}
 	pData = (OPJ_UINT8 *) calloc(1, stride * Info_h.biHeight * sizeof(OPJ_UINT8));
 	if (pData == NULL) {
 		fclose(IN);

src/bin/jp2/opj_compress.c

@@ -236,7 +236,7 @@ static void encode_help_display(void) {
     fprintf(stdout,"-I\n");
     fprintf(stdout,"    Use the irreversible DWT 9-7.\n");
     fprintf(stdout,"-mct <0|1|2>\n");
-    fprintf(stdout,"    Explicitely specifies if a Multiple Component Transform has to be used.\n");
+    fprintf(stdout,"    Explicitly specifies if a Multiple Component Transform has to be used.\n");
     fprintf(stdout,"    0: no MCT ; 1: RGB->YCC conversion ; 2: custom MCT.\n");
     fprintf(stdout,"    If custom MCT, \"-m\" option has to be used (see hereunder).\n");
     fprintf(stdout,"    By default, RGB->YCC conversion is used if there are 3 components or more,\n");
@@ -1029,7 +1029,7 @@ static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *param
                 return 1;
             }
             fprintf(stdout,"CINEMA 2K profile activated\n"
-                    "Other options specified could be overriden\n");
+                    "Other options specified could be overridden\n");
 
         }
             break;
@@ -1040,7 +1040,7 @@ static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *param
         {
             parameters->rsiz = OPJ_PROFILE_CINEMA_4K;
             fprintf(stdout,"CINEMA 4K profile activated\n"
-                    "Other options specified could be overriden\n");
+                    "Other options specified could be overridden\n");
         }
             break;
 

src/lib/openjp2/CMakeLists.txt

@@ -5,7 +5,7 @@ install( FILES  ${CMAKE_CURRENT_BINARY_DIR}/opj_config.h
  DESTINATION ${OPENJPEG_INSTALL_INCLUDE_DIR} COMPONENT Headers)
 
 include_directories(
-  ${OPENJPEG_BINARY_DIR}/src/lib/openjp2 # opj_config.h and opj_config_private.h
+  ${${OPENJPEG_NAMESPACE}_BINARY_DIR}/src/lib/openjp2 # opj_config.h and opj_config_private.h
 )
 # Defines the source code for the library
 set(OPENJPEG_SRCS
@@ -110,11 +110,13 @@ install(
   DESTINATION ${OPENJPEG_INSTALL_MAN_DIR}/man3)
 endif()
 
-# internal utilities to generate t1_luts.h (part of the jp2 lib)
+if(BUILD_LUTS_GENERATOR)
+# internal utility to generate t1_luts.h (part of the jp2 lib)
 # no need to install:
-add_executable(t1_generate_luts t1_generate_luts.c)
-if(UNIX)
-  target_link_libraries(t1_generate_luts m)
+  add_executable(t1_generate_luts t1_generate_luts.c)
+  if(UNIX)
+    target_link_libraries(t1_generate_luts m)
+  endif()
 endif()
 
 # Experimental option; let's how cppcheck performs

src/lib/openjp2/dwt.c

@@ -395,7 +395,7 @@ static INLINE OPJ_BOOL opj_dwt_encode_procedure(opj_tcd_tilecomp_t * tilec,void
 
 	OPJ_INT32 rw;			/* width of the resolution level computed   */
 	OPJ_INT32 rh;			/* height of the resolution level computed  */
-	OPJ_UINT32 l_data_size;
+    size_t l_data_size;
 
 	opj_tcd_resolution_t * l_cur_res = 0;
 	opj_tcd_resolution_t * l_last_res = 0;
@@ -407,11 +407,20 @@ static INLINE OPJ_BOOL opj_dwt_encode_procedure(opj_tcd_tilecomp_t * tilec,void
 	l_cur_res = tilec->resolutions + l;
 	l_last_res = l_cur_res - 1;
 
-	l_data_size = opj_dwt_max_resolution( tilec->resolutions,tilec->numresolutions) * (OPJ_UINT32)sizeof(OPJ_INT32);
-	bj = (OPJ_INT32*)opj_malloc((size_t)l_data_size);
+	l_data_size = opj_dwt_max_resolution(tilec->resolutions, tilec->numresolutions);
+ 
+	/* overflow check */
+    if (l_data_size > (SIZE_MAX / sizeof(OPJ_INT32))) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
+
+    l_data_size *= sizeof(OPJ_INT32);
+    bj = (OPJ_INT32*)opj_malloc(l_data_size);
 	/* l_data_size is equal to 0 when numresolutions == 1 but bj is not used */
 	/* in that case, so do not error out */
 	if (l_data_size != 0 && ! bj) {
+		/* FIXME event manager error callback */
 		return OPJ_FALSE;
 	}
 	i = l;
@@ -569,11 +578,23 @@ static OPJ_BOOL opj_dwt_decode_tile(opj_tcd_tilecomp_t* tilec, OPJ_UINT32 numres
 	OPJ_UINT32 rh = (OPJ_UINT32)(tr->y1 - tr->y0);	/* height of the resolution level computed */
 
 	OPJ_UINT32 w = (OPJ_UINT32)(tilec->x1 - tilec->x0);
+
+    size_t mr; /* max resolution */
 	
 	if (numres == 1U) {
 		return OPJ_TRUE;
 	}
-	h.mem = (OPJ_INT32*)opj_aligned_malloc(opj_dwt_max_resolution(tr, numres) * sizeof(OPJ_INT32));
+	
+    mr = opj_dwt_max_resolution(tr, numres);
+	
+	/* overflow check */
+    if (mr > (SIZE_MAX / sizeof(OPJ_INT32))) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
+	
+    mr *= sizeof(OPJ_INT32);
+    h.mem = (OPJ_INT32*)opj_aligned_malloc(mr);
 	if (! h.mem){
 		/* FIXME event manager error callback */
 		return OPJ_FALSE;
@@ -845,8 +866,25 @@ OPJ_BOOL opj_dwt_decode_real(opj_tcd_tilecomp_t* OPJ_RESTRICT tilec, OPJ_UINT32
 	OPJ_UINT32 rh = (OPJ_UINT32)(res->y1 - res->y0);	/* height of the resolution level computed */
 
 	OPJ_UINT32 w = (OPJ_UINT32)(tilec->x1 - tilec->x0);
+	
+    size_t mr; /* max resolution */
+	
+	mr = opj_dwt_max_resolution(res, numres);
+	
+	/* overflow check */
+	if (mr > (0xFFFFFFFFU /* UINT32_MAX */ - 5U)) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
+	mr += 5U;
+	
+    if (mr > (SIZE_MAX / sizeof(opj_v4_t))) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
 
-	h.wavelet = (opj_v4_t*) opj_aligned_malloc((opj_dwt_max_resolution(res, numres)+5) * sizeof(opj_v4_t));
+    mr *= sizeof(opj_v4_t);
+    h.wavelet = (opj_v4_t*) opj_aligned_malloc(mr);
 	if (!h.wavelet) {
 		/* FIXME event manager error callback */
 		return OPJ_FALSE;

src/lib/openjp2/pi.c

@@ -1238,14 +1238,14 @@ opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
 
 	/* memory allocation for include */
 	/* prevent an integer overflow issue */
+	/* 0 < l_tcp->numlayers < 65536 c.f. opj_j2k_read_cod in j2k.c */
 	l_current_pi->include = 00;
 	if (l_step_l <= (SIZE_MAX / (l_tcp->numlayers + 1U)))
 	{
 		l_current_pi->include = (OPJ_INT16*) opj_calloc((size_t)(l_tcp->numlayers + 1U) * l_step_l, sizeof(OPJ_INT16));
 	}
 
-	if
-		(!l_current_pi->include)
+	if (!l_current_pi->include)
 	{
 		opj_free(l_tmp_data);
 		opj_free(l_tmp_ptr);

src/lib/openjp2/t1.c

@@ -1166,41 +1166,71 @@ static OPJ_BOOL opj_t1_allocate_buffers(
 		OPJ_UINT32 w,
 		OPJ_UINT32 h)
 {
-	OPJ_UINT32 datasize=w * h;
-	OPJ_UINT32 flagssize;
+    size_t flagssize;
 
 	/* encoder uses tile buffer, so no need to allocate */
 	if (!t1->encoder) {
-		if(datasize > t1->datasize){
+        size_t datasize;
+		
+		/* Overflow check */
+		if ((w > 0U) && (h > (0xFFFFFFFFU /* UINT32_MAX */ / w))) {
+			/* FIXME event manager error callback */
+			return OPJ_FALSE;
+		}
+        datasize = (size_t) w * h;
+		
+		/* Overflow check */
+        if (datasize > (SIZE_MAX / sizeof(OPJ_INT32))) {
+			/* FIXME event manager error callback */
+			return OPJ_FALSE;
+		}
+		
+        if(datasize > (size_t) t1->datasize){
 			opj_aligned_free(t1->data);
-			t1->data = (OPJ_INT32*) opj_aligned_malloc(datasize * sizeof(OPJ_INT32));
+            t1->data = (OPJ_INT32*) opj_aligned_malloc(datasize * sizeof(OPJ_INT32));
 			if(!t1->data){
 				/* FIXME event manager error callback */
 				return OPJ_FALSE;
 			}
-			t1->datasize=datasize;
+            t1->datasize = (OPJ_UINT32) datasize;
 		}
 		/* memset first arg is declared to never be null by gcc */
 		if (t1->data != NULL) {
-			memset(t1->data,0,datasize * sizeof(OPJ_INT32));
+            memset(t1->data, 0, datasize * sizeof(OPJ_INT32));
 		}
 	}
-	t1->flags_stride=w+2;
-	flagssize=t1->flags_stride * (h+2);
+	
+	if ((w > (0xFFFFFFFFU /* UINT32_MAX */ - 2U)) || (h > (0xFFFFFFFFU /* UINT32_MAX */ - 2U))) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
+	
+	t1->flags_stride = w + 2U; /* can't be 0U */
+	if ((h + 2U) > (0xFFFFFFFFU /* UINT32_MAX */ / t1->flags_stride)) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
+    flagssize = (size_t) t1->flags_stride * (h + 2U);
 
-	if(flagssize > t1->flagssize){
+	/* Overflow check */
+    if (flagssize > (SIZE_MAX / sizeof(opj_flag_t))) {
+		/* FIXME event manager error callback */
+		return OPJ_FALSE;
+	}
+	
+    if(flagssize > (size_t) t1->flagssize){
 		opj_aligned_free(t1->flags);
-		t1->flags = (opj_flag_t*) opj_aligned_malloc(flagssize * sizeof(opj_flag_t));
+        t1->flags = (opj_flag_t*) opj_aligned_malloc(flagssize * sizeof(opj_flag_t));
 		if(!t1->flags){
 			/* FIXME event manager error callback */
 			return OPJ_FALSE;
 		}
-		t1->flagssize=flagssize;
+        t1->flagssize = (OPJ_UINT32) flagssize;
 	}
-	memset(t1->flags,0,flagssize * sizeof(opj_flag_t));
+    memset(t1->flags, 0, flagssize * sizeof(opj_flag_t));
 
-	t1->w=w;
-	t1->h=h;
+	t1->w = w;
+	t1->h = h;
 
 	return OPJ_TRUE;
 }

src/lib/openjpip/j2kheader_manager.c

@@ -117,6 +117,7 @@ CODmarker_param_t get_CODmkrdata_from_j2kstream( Byte_t *CODstream)
 
   if( *CODstream++ != 0xff || *CODstream++ != 0x52){
     fprintf( FCGI_stderr, "Error, COD marker not found in the reconstructed j2kstream\n");
+    memset(&COD, 0, sizeof(COD));
     return COD;
   }
   

src/lib/openjpip/jpip_parser.c

@@ -438,7 +438,7 @@ void enqueue_allprecincts( int tile_id, int level, int lastcomp, OPJ_BOOL *comps
 OPJ_BOOL enqueue_metabins( query_param_t query_param, metadatalist_param_t *metadatalist, msgqueue_param_t *msgqueue)
 {
   int i;
-  for( i=0; query_param.box_type[i][0]!=0 && i<MAX_NUMOFBOX; i++){
+  for( i=0; i<MAX_NUMOFBOX && query_param.box_type[i][0]!=0; i++){
     if( query_param.box_type[i][0] == '*'){
       fprintf( FCGI_stdout, "Status: 501\r\n");
       fprintf( FCGI_stdout, "Reason: metareq with all box-property * not implemented\r\n");

src/lib/openjpip/query_parser.c

@@ -264,7 +264,7 @@ void print_queryparam( query_param_t query_param)
   }
 
   fprintf( logstream, "\t req-box-prop\n");
-  for( i=0; query_param.box_type[i][0]!=0 && i<MAX_NUMOFBOX; i++){
+  for( i=0; i<MAX_NUMOFBOX && query_param.box_type[i][0]!=0; i++){
     fprintf( logstream, "\t\t box_type: %.4s limit: %d w:%d s:%d g:%d a:%d priority:%d\n", query_param.box_type[i], query_param.limit[i], query_param.w[i], query_param.s[i], query_param.g[i], query_param.a[i], query_param.priority[i]);
   }
   

tests/nonregression/CMakeLists.txt

@@ -51,6 +51,7 @@ set(BLACKLIST_JPEG2000_TMP
     issue427-null-image-size.jp2
     issue427-illegal-tile-offset.jp2
     issue495.jp2
+    issue820.jp2
    )
 
 # Define a list of file which should be gracefully rejected:

tests/nonregression/test_suite.ctest.in

@@ -146,6 +146,8 @@ opj_compress -i @INPUT_NR_PATH@/flower-minisblack-11.tif -o @TEMP_PATH@/flower-m
 opj_compress -i @INPUT_NR_PATH@/flower-minisblack-13.tif -o @TEMP_PATH@/flower-minisblack-13.tif.jp2
 opj_compress -i @INPUT_NR_PATH@/flower-minisblack-15.tif -o @TEMP_PATH@/flower-minisblack-15.tif.jp2
 
+# issue 843 Crash with invalid ppm file
+!opj_compress -i @INPUT_NR_PATH@/issue843.ppm -o @TEMP_PATH@/issue843.ppm.jp2
 
 # DECODER TEST SUITE
 opj_decompress -i  @INPUT_NR_PATH@/Bretagne2.j2k -o @TEMP_PATH@/Bretagne2.j2k.pgx
@@ -566,6 +568,9 @@ opj_decompress -i @INPUT_NR_PATH@/issue726.j2k -o @TEMP_PATH@/issue726.png
 !opj_decompress -i @INPUT_NR_PATH@/issue775-2.j2k -o @TEMP_PATH@/issue775-2.png
 # issue 818
 opj_decompress -i @INPUT_NR_PATH@/issue818.jp2 -o @TEMP_PATH@/issue818.png
-# issue 823 (yes, not a typo, test image is issue822)
-!opj_decompress -i @INPUT_NR_PATH@/issue822.jp2 -o @TEMP_PATH@/issue822.png
-
+# issue 823
+!opj_decompress -i @INPUT_NR_PATH@/issue823.jp2 -o @TEMP_PATH@/issue823.png
+# issue 826
+!opj_decompress -i @INPUT_NR_PATH@/issue826.jp2 -o @TEMP_PATH@/issue826.png
+# issue 820
+!opj_decompress -i @INPUT_NR_PATH@/issue820.jp2 -o @TEMP_PATH@/issue820.png

tests/test_tile_decoder.c

@@ -178,7 +178,7 @@ int main (int argc, char *argv[])
         int da_y0=0;
         int da_x1=1000;
         int da_y1=1000;
-        char input_file[64];
+        const char *input_file;
 
         /* should be test_tile_decoder 0 0 1000 1000 tte1.j2k */
         if( argc == 6 )
@@ -187,7 +187,7 @@ int main (int argc, char *argv[])
                 da_y0=atoi(argv[2]);
                 da_x1=atoi(argv[3]);
                 da_y1=atoi(argv[4]);
-                strcpy(input_file,argv[5]);
+                input_file = argv[5];
 
         }
         else
@@ -196,7 +196,7 @@ int main (int argc, char *argv[])
                 da_y0=0;
                 da_x1=1000;
                 da_y1=1000;
-                strcpy(input_file,"test.j2k");
+                input_file = "test.j2k";
         }
 
         if (! l_data) {

tests/test_tile_encoder.c

@@ -69,7 +69,7 @@ int main (int argc, char *argv[])
 	opj_stream_t * l_stream;
 	OPJ_UINT32 l_nb_tiles;
 	OPJ_UINT32 l_data_size;
-	unsigned char len;
+	size_t len;
 
 #ifdef USING_MCT
 	const OPJ_FLOAT32 l_mct [] =
@@ -96,7 +96,7 @@ int main (int argc, char *argv[])
   int tile_height;
   int comp_prec;
   int irreversible;
-  char output_file[64];
+  const char *output_file;
 
   /* should be test_tile_encoder 3 2000 2000 1000 1000 8 tte1.j2k */
   if( argc == 9 )
@@ -108,7 +108,7 @@ int main (int argc, char *argv[])
     tile_height = atoi( argv[5] );
     comp_prec = atoi( argv[6] );
     irreversible = atoi( argv[7] );
-    strcpy(output_file, argv[8] );
+    output_file = argv[8];
     }
   else
     {
@@ -119,7 +119,7 @@ int main (int argc, char *argv[])
     tile_height = 1000;
     comp_prec = 8;
     irreversible = 1;
-    strcpy(output_file, "test.j2k" );
+    output_file = "test.j2k";
     }
   if( num_comps > NUM_COMPS_MAX )
     {
@@ -228,7 +228,7 @@ int main (int argc, char *argv[])
 	}
 
   /* should we do j2k or jp2 ?*/
-  len = (unsigned char)strlen( output_file );
+  len = strlen( output_file );
   if( strcmp( output_file + len - 4, ".jp2" ) == 0 )
     {
     l_codec = opj_create_compress(OPJ_CODEC_JP2);

thirdparty/liblcms2/include/lcms2.h

@@ -23,7 +23,7 @@
 //
 //---------------------------------------------------------------------------------
 //
-// Version 2.8
+// Version 2.8beta0
 //
 
 #ifndef _lcms2_H
@@ -656,7 +656,7 @@ typedef void* cmsHTRANSFORM;
 //            T: Pixeltype
 //            F: Flavor  0=MinIsBlack(Chocolate) 1=MinIsWhite(Vanilla)
 //            P: Planar? 0=Chunky, 1=Planar
-//            X: swap 16 bps endianness?
+//            X: swap 16 bps endianess?
 //            S: Do swap? ie, BGR, KYMC
 //            E: Extra samples
 //            C: Channels (Samples per pixel)
@@ -1016,7 +1016,7 @@ CMSAPI long int          CMSEXPORT cmsfilelength(FILE* f);
 // Context handling --------------------------------------------------------------------------------------------------------
 
 // Each context holds its owns globals and its own plug-ins. There is a global context with the id = 0 for lecacy compatibility
-// though using the global context is not recommended. Proper context handling makes lcms more thread-safe.
+// though using the global context is not recomended. Proper context handling makes lcms more thread-safe.
 
 typedef struct _cmsContext_struct* cmsContext;
 

thirdparty/liblcms2/include/lcms2_plugin.h

@@ -128,7 +128,7 @@ struct _cms_io_handler {
                                                                    const void* Buffer);
 };
 
-// Endianness adjust functions
+// Endianess adjust functions
 CMSAPI cmsUInt16Number   CMSEXPORT  _cmsAdjustEndianess16(cmsUInt16Number Word);
 CMSAPI cmsUInt32Number   CMSEXPORT  _cmsAdjustEndianess32(cmsUInt32Number Value);
 CMSAPI void              CMSEXPORT  _cmsAdjustEndianess64(cmsUInt64Number* Result, cmsUInt64Number* QWord);

thirdparty/liblcms2/src/cmsalpha.c

@@ -408,111 +408,74 @@ void  ComputeComponentIncrements(cmsUInt32Number Format,
 
 // Handles extra channels copying alpha if requested by the flags
 void _cmsHandleExtraChannels(_cmsTRANSFORM* p, const void* in,
-                                               void* out,
-                                               cmsUInt32Number PixelsPerLine,
-                                               cmsUInt32Number LineCount,
-                                               const cmsStride* Stride)
+                             void* out, 
+                             cmsUInt32Number PixelsPerLine,
+                             cmsUInt32Number LineCount,
+                             const cmsStride* Stride)
 {
-    cmsUInt32Number i, j, k;
-    cmsUInt32Number nExtra;
-    cmsUInt32Number SourceStartingOrder[cmsMAXCHANNELS];
-    cmsUInt32Number SourceIncrements[cmsMAXCHANNELS];
-    cmsUInt32Number DestStartingOrder[cmsMAXCHANNELS];
-    cmsUInt32Number DestIncrements[cmsMAXCHANNELS];
+       size_t i, j, k;
+       cmsUInt32Number nExtra;
+       cmsUInt32Number SourceStartingOrder[cmsMAXCHANNELS];
+       cmsUInt32Number SourceIncrements[cmsMAXCHANNELS];
+       cmsUInt32Number DestStartingOrder[cmsMAXCHANNELS];
+       cmsUInt32Number DestIncrements[cmsMAXCHANNELS];
+       cmsUInt32Number SourceStrideIncrements[cmsMAXCHANNELS];
+       cmsUInt32Number DestStrideIncrements[cmsMAXCHANNELS];
 
-    cmsFormatterAlphaFn copyValueFn;
+       cmsUInt8Number* SourcePtr[cmsMAXCHANNELS];
+       cmsUInt8Number* DestPtr[cmsMAXCHANNELS];
 
-    // Make sure we need some copy
-    if (!(p->dwOriginalFlags & cmsFLAGS_COPY_ALPHA))
-        return;
+       cmsFormatterAlphaFn copyValueFn;
 
-    // Exit early if in-place color-management is occurring - no need to copy extra channels to themselves.
-    if (p->InputFormat == p->OutputFormat && in == out)
-        return;
+       // Make sure we need some copy
+       if (!(p->dwOriginalFlags & cmsFLAGS_COPY_ALPHA))
+              return;
 
-    // Make sure we have same number of alpha channels. If not, just return as this should be checked at transform creation time.
-    nExtra = T_EXTRA(p->InputFormat);
-    if (nExtra != T_EXTRA(p->OutputFormat))
-        return;
+       // Make sure we have same number of alpha channels. If not, just return as this should be checked at transform creation time.
+       nExtra = T_EXTRA(p->InputFormat);
+       if (nExtra != T_EXTRA(p->OutputFormat))
+              return;
+       
+       // Anything to do?
+       if (nExtra == 0)
+              return;
 
-    // Anything to do?
-    if (nExtra == 0)
-        return;
+       // Compute the increments 
+       ComputeComponentIncrements(p->InputFormat, Stride->BytesPerPlaneIn, SourceStartingOrder, SourceIncrements);
+       ComputeComponentIncrements(p->OutputFormat, Stride->BytesPerPlaneOut, DestStartingOrder, DestIncrements);
+    
+       // Check for conversions 8, 16, half, float, dbl
+       copyValueFn = _cmsGetFormatterAlpha(p->ContextID, p->InputFormat, p->OutputFormat);
 
-    // Compute the increments 
-    ComputeComponentIncrements(p->InputFormat, Stride->BytesPerPlaneIn, SourceStartingOrder, SourceIncrements);
-    ComputeComponentIncrements(p->OutputFormat, Stride->BytesPerPlaneOut, DestStartingOrder, DestIncrements);
+       memset(SourceStrideIncrements, 0, sizeof(SourceStrideIncrements));
+       memset(DestStrideIncrements, 0, sizeof(DestStrideIncrements));
 
-    // Check for conversions 8, 16, half, float, dbl
-    copyValueFn = _cmsGetFormatterAlpha(p->ContextID, p->InputFormat, p->OutputFormat);
+       // The loop itself       
+       for (i = 0; i < LineCount; i++) {
 
-    if (nExtra == 1) { // Optimized routine for copying a single extra channel quickly
+              // Prepare pointers for the loop
+              for (j = 0; j < nExtra; j++) {
 
-        cmsUInt8Number* SourcePtr;
-        cmsUInt8Number* DestPtr;
+                     SourcePtr[j] = (cmsUInt8Number*)in + SourceStartingOrder[j] + SourceStrideIncrements[j];
+                     DestPtr[j] = (cmsUInt8Number*)out + DestStartingOrder[j] + DestStrideIncrements[j];
+              }
 
-        cmsUInt32Number SourceStrideIncrement = 0;
-        cmsUInt32Number DestStrideIncrement = 0;
+              for (j = 0; j < PixelsPerLine; j++) {
 
-        // The loop itself
-        for (i = 0; i < LineCount; i++) {
+                     for (k = 0; k < nExtra; k++) {
 
-            // Prepare pointers for the loop
-            SourcePtr = (cmsUInt8Number*)in + SourceStartingOrder[0] + SourceStrideIncrement;
-            DestPtr = (cmsUInt8Number*)out + DestStartingOrder[0] + DestStrideIncrement;
+                            copyValueFn(DestPtr[k], SourcePtr[k]);
 
-            for (j = 0; j < PixelsPerLine; j++) {
+                            SourcePtr[k] += SourceIncrements[k];
+                            DestPtr[k] += DestIncrements[k];
+                     }
+              }
 
-                copyValueFn(DestPtr, SourcePtr);
+              for (j = 0; j < nExtra; j++) {
 
-                SourcePtr += SourceIncrements[0];
-                DestPtr += DestIncrements[0];
-            }
-
-            SourceStrideIncrement += Stride->BytesPerLineIn;
-            DestStrideIncrement += Stride->BytesPerLineOut;
-        }
-
-    }
-    else { // General case with more than one extra channel
-
-        cmsUInt8Number* SourcePtr[cmsMAXCHANNELS];
-        cmsUInt8Number* DestPtr[cmsMAXCHANNELS];
-
-        cmsUInt32Number SourceStrideIncrements[cmsMAXCHANNELS];
-        cmsUInt32Number DestStrideIncrements[cmsMAXCHANNELS];
-
-        memset(SourceStrideIncrements, 0, sizeof(SourceStrideIncrements));
-        memset(DestStrideIncrements, 0, sizeof(DestStrideIncrements));
-
-        // The loop itself       
-        for (i = 0; i < LineCount; i++) {
-
-            // Prepare pointers for the loop
-            for (j = 0; j < nExtra; j++) {
-
-                SourcePtr[j] = (cmsUInt8Number*)in + SourceStartingOrder[j] + SourceStrideIncrements[j];
-                DestPtr[j] = (cmsUInt8Number*)out + DestStartingOrder[j] + DestStrideIncrements[j];
-            }
-
-            for (j = 0; j < PixelsPerLine; j++) {
-
-                for (k = 0; k < nExtra; k++) {
-
-                    copyValueFn(DestPtr[k], SourcePtr[k]);
-
-                    SourcePtr[k] += SourceIncrements[k];
-                    DestPtr[k] += DestIncrements[k];
-                }
-            }
-
-            for (j = 0; j < nExtra; j++) {
-
-                SourceStrideIncrements[j] += Stride->BytesPerLineIn;
-                DestStrideIncrements[j] += Stride->BytesPerLineOut;
-            }
-        }
-    }
+                     SourceStrideIncrements[j] += Stride->BytesPerLineIn;
+                     DestStrideIncrements[j] += Stride->BytesPerLineOut;
+              }
+       }
 }
 
-

thirdparty/liblcms2/src/cmscgats.c

@@ -596,7 +596,7 @@ void ReadReal(cmsIT8* it8, int inum)
 }
 
 // Parses a float number
-// This can not call directly atof because it uses locale dependent
+// This can not call directly atof because it uses locale dependant
 // parsing, while CCMX files always use . as decimal separator
 static
 cmsFloat64Number ParseFloatNumber(const char *Buffer)
@@ -1817,7 +1817,7 @@ cmsBool CMSEXPORT cmsIT8SaveToMem(cmsHANDLE hIT8, void *MemPtr, cmsUInt32Number*
 }
 
 
-// -------------------------------------------------------------- Higher level parsing
+// -------------------------------------------------------------- Higer level parsing
 
 static
 cmsBool DataFormatSection(cmsIT8* it8)
@@ -2120,7 +2120,7 @@ cmsBool ParseIT8(cmsIT8* it8, cmsBool nosheet)
 
 
 
-// Init useful pointers
+// Init usefull pointers
 
 static
 void CookPointers(cmsIT8* it8)

thirdparty/liblcms2/src/cmscnvrt.c

@@ -107,7 +107,7 @@ static cmsIntentsList DefaultIntents[] = {
 };
 
 
-// A pointer to the beginning of the list
+// A pointer to the begining of the list
 _cmsIntentsPluginChunkType _cmsIntentsPluginChunk = { NULL };
 
 // Duplicates the zone of memory used by the plug-in in the new context
@@ -889,7 +889,7 @@ int BlackPreservingSampler(register const cmsUInt16Number In[], register cmsUInt
         return TRUE;
     }
 
-    // Make sure to pass through K (which now is fixed)
+    // Make sure to pass thru K (which now is fixed)
     Outf[3] = LabK[3];
 
     // Apply TAC if needed
@@ -957,7 +957,7 @@ cmsPipeline* BlackPreservingKPlaneIntents(cmsContext     ContextID,
     memset(&bp, 0, sizeof(bp));
 
     // We need the input LUT of the last profile, assuming this one is responsible of
-    // black generation. This LUT will be searched in inverse order.
+    // black generation. This LUT will be seached in inverse order.
     bp.LabK2cmyk = _cmsReadInputLUT(hProfiles[nProfiles-1], INTENT_RELATIVE_COLORIMETRIC);
     if (bp.LabK2cmyk == NULL) goto Cleanup;
 

thirdparty/liblcms2/src/cmserr.c

@@ -198,7 +198,7 @@ void _cmsAllocMemPluginChunk(struct _cmsContext_struct* ctx, const struct _cmsCo
     } 
 }
 
-// Auxiliary to fill memory management functions from plugin (or context 0 defaults)
+// Auxiliar to fill memory management functions from plugin (or context 0 defaults)
 void _cmsInstallAllocFunctions(cmsPluginMemHandler* Plugin, _cmsMemPluginChunkType* ptr)
 {
     if (Plugin == NULL) {
@@ -430,14 +430,14 @@ void* _cmsSubAllocDup(_cmsSubAllocator* s, const void *ptr, cmsUInt32Number size
 
 // Error logging ******************************************************************
 
-// There is no error handling at all. When a function fails, it returns proper value.
+// There is no error handling at all. When a funtion fails, it returns proper value.
 // For example, all create functions does return NULL on failure. Other return FALSE
 // It may be interesting, for the developer, to know why the function is failing.
 // for that reason, lcms2 does offer a logging function. This function does recive
 // a ENGLISH string with some clues on what is going wrong. You can show this
 // info to the end user, or just create some sort of log.
 // The logging function should NOT terminate the program, as this obviously can leave
-// resources. It is the programmer's responsibility to check each function return code
+// resources. It is the programmer's responsability to check each function return code
 // to make sure it didn't fail.
 
 // Error messages are limited to MAX_ERROR_MESSAGE_LEN

thirdparty/liblcms2/src/cmsgamma.c

@@ -567,7 +567,7 @@ cmsFloat64Number DefaultEvalParametricFn(cmsInt32Number Type, const cmsFloat64Nu
     return Val;
 }
 
-// Evaluate a segmented function for a single value. Return -1 if no valid segment found .
+// Evaluate a segmented funtion for a single value. Return -1 if no valid segment found .
 // If fn type is 0, perform an interpolation on the table
 static
 cmsFloat64Number EvalSegmentedFn(const cmsToneCurve *g, cmsFloat64Number R)

thirdparty/liblcms2/src/cmsgmt.c

@@ -27,7 +27,7 @@
 #include "lcms2_internal.h"
 
 
-// Auxiliary: append a Lab identity after the given sequence of profiles
+// Auxiliar: append a Lab identity after the given sequence of profiles
 // and return the transform. Lab profile is closed, rest of profiles are kept open.
 cmsHTRANSFORM _cmsChain2Lab(cmsContext            ContextID,
                             cmsUInt32Number        nProfiles,
@@ -172,7 +172,7 @@ cmsToneCurve* _cmsBuildKToneCurve(cmsContext        ContextID,
     }
 
     // Build the relationship. This effectively limits the maximum accuracy to 16 bits, but
-    // since this is used on black-preserving LUTs, we are not losing  accuracy in any case
+    // since this is used on black-preserving LUTs, we are not loosing  accuracy in any case
     KTone = cmsJoinToneCurve(ContextID, in, out, nPoints);
 
     // Get rid of components
@@ -278,7 +278,7 @@ int GamutSampler(register const cmsUInt16Number In[], register cmsUInt16Number O
 }
 
 // Does compute a gamut LUT going back and forth across pcs -> relativ. colorimetric intent -> pcs
-// the dE obtained is then annotated on the LUT. Values truly out of gamut are clipped to dE = 0xFFFE
+// the dE obtained is then annotated on the LUT. Values truely out of gamut are clipped to dE = 0xFFFE
 // and values changed are supposed to be handled by any gamut remapping, so, are out of gamut as well.
 //
 // **WARNING: This algorithm does assume that gamut remapping algorithms does NOT move in-gamut colors,

thirdparty/liblcms2/src/cmsintrp.c

@@ -156,7 +156,7 @@ cmsInterpParams* _cmsComputeInterpParams(cmsContext ContextID, int nSamples, int
     int i;
     cmsUInt32Number Samples[MAX_INPUT_DIMENSIONS];
 
-    // Fill the auxiliary array
+    // Fill the auxiliar array
     for (i=0; i < MAX_INPUT_DIMENSIONS; i++)
         Samples[i] = nSamples;
 

thirdparty/liblcms2/src/cmsio0.c

@@ -324,7 +324,7 @@ cmsUInt32Number FileRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number
     return nReaded;
 }
 
-// Position file pointer in the file
+// Postion file pointer in the file
 static
 cmsBool  FileSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
 {
@@ -368,7 +368,6 @@ cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromFile(cmsContext ContextID, const cha
 {
     cmsIOHANDLER* iohandler = NULL;
     FILE* fm = NULL;
-    cmsInt32Number fileLen;
 
     _cmsAssert(FileName != NULL);
     _cmsAssert(AccessMode != NULL);
@@ -384,17 +383,8 @@ cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromFile(cmsContext ContextID, const cha
             _cmsFree(ContextID, iohandler);
              cmsSignalError(ContextID, cmsERROR_FILE, "File '%s' not found", FileName);
             return NULL;
-        }                                     
-        fileLen = cmsfilelength(fm);
-        if (fileLen < 0)
-        {
-            fclose(fm);
-            _cmsFree(ContextID, iohandler);
-            cmsSignalError(ContextID, cmsERROR_FILE, "Cannot get size of file '%s'", FileName);
-            return NULL;
         }
-
-        iohandler -> ReportedSize = (cmsUInt32Number) fileLen;
+        iohandler -> ReportedSize = (cmsUInt32Number) cmsfilelength(fm);
         break;
 
     case 'w':
@@ -434,14 +424,6 @@ cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromFile(cmsContext ContextID, const cha
 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromStream(cmsContext ContextID, FILE* Stream)
 {
     cmsIOHANDLER* iohandler = NULL;
-    cmsInt32Number fileSize;
-
-    fileSize = cmsfilelength(Stream);
-    if (fileSize < 0)
-    {
-        cmsSignalError(ContextID, cmsERROR_FILE, "Cannot get size of stream");
-        return NULL;
-    }
 
     iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
     if (iohandler == NULL) return NULL;
@@ -449,7 +431,7 @@ cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromStream(cmsContext ContextID, FILE* S
     iohandler -> ContextID = ContextID;
     iohandler -> stream = (void*) Stream;
     iohandler -> UsedSpace = 0;
-    iohandler -> ReportedSize = (cmsUInt32Number) fileSize;
+    iohandler -> ReportedSize = (cmsUInt32Number) cmsfilelength(Stream);
     iohandler -> PhysicalFile[0] = 0;
 
     iohandler ->Read    = FileRead;
@@ -641,7 +623,7 @@ cmsBool _cmsNewTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, int* NewPos)
 }
 
 
-// Check existence
+// Check existance
 cmsBool CMSEXPORT cmsIsTag(cmsHPROFILE hProfile, cmsTagSignature sig)
 {
        _cmsICCPROFILE*  Icc = (_cmsICCPROFILE*) (void*) hProfile;
@@ -697,7 +679,7 @@ cmsBool _cmsReadHeader(_cmsICCPROFILE* Icc)
         return FALSE;
     }
 
-    // Adjust endianness of the used parameters
+    // Adjust endianess of the used parameters
     Icc -> DeviceClass     = (cmsProfileClassSignature) _cmsAdjustEndianess32(Header.deviceClass);
     Icc -> ColorSpace      = (cmsColorSpaceSignature)   _cmsAdjustEndianess32(Header.colorSpace);
     Icc -> PCS             = (cmsColorSpaceSignature)   _cmsAdjustEndianess32(Header.pcs);
@@ -815,7 +797,7 @@ cmsBool _cmsWriteHeader(_cmsICCPROFILE* Icc, cmsUInt32Number UsedSpace)
 
     memset(&Header.reserved, 0, sizeof(Header.reserved));
 
-    // Set profile ID. Endianness is always big endian
+    // Set profile ID. Endianess is always big endian
     memmove(&Header.profileID, &Icc ->ProfileID, 16);
 
     // Dump the header
@@ -1562,7 +1544,7 @@ void* CMSEXPORT cmsReadTag(cmsHPROFILE hProfile, cmsTagSignature sig)
     LocalTypeHandler.ICCVersion = Icc ->Version;
     Icc -> TagPtrs[n] = LocalTypeHandler.ReadPtr(&LocalTypeHandler, io, &ElemCount, TagSize);
 
-    // The tag type is supported, but something wrong happened and we cannot read the tag.
+    // The tag type is supported, but something wrong happend and we cannot read the tag.
     // let know the user about this (although it is just a warning)
     if (Icc -> TagPtrs[n] == NULL) {
 

thirdparty/liblcms2/src/cmsio1.c

@@ -128,7 +128,7 @@ cmsBool  _cmsReadCHAD(cmsMAT3* Dest, cmsHPROFILE hProfile)
 }
 
 
-// Auxiliary, read colorants as a MAT3 structure. Used by any function that needs a matrix-shaper
+// Auxiliar, read colorants as a MAT3 structure. Used by any function that needs a matrix-shaper
 static
 cmsBool ReadICCMatrixRGB2XYZ(cmsMAT3* r, cmsHPROFILE hProfile)
 {
@@ -314,7 +314,7 @@ cmsPipeline* _cmsReadInputLUT(cmsHPROFILE hProfile, int Intent)
     cmsTagSignature tagFloat;
     cmsContext ContextID = cmsGetProfileContextID(hProfile);
 
-    // On named color, take the appropriate tag
+    // On named color, take the appropiate tag
     if (cmsGetDeviceClass(hProfile) == cmsSigNamedColorClass) {
 
         cmsPipeline* Lut;
@@ -336,9 +336,9 @@ cmsPipeline* _cmsReadInputLUT(cmsHPROFILE hProfile, int Intent)
         return Lut;
     }
 
-    // This is an attempt to reuse this function to retrieve the matrix-shaper as pipeline no
+    // This is an attempt to reuse this funtion to retrieve the matrix-shaper as pipeline no
     // matter other LUT are present and have precedence. Intent = -1 means just this.
-    if (Intent >= INTENT_PERCEPTUAL && Intent <= INTENT_ABSOLUTE_COLORIMETRIC) {
+    if (Intent != -1) {
 
         tag16 = Device2PCS16[Intent];
         tagFloat = Device2PCSFloat[Intent];
@@ -394,7 +394,7 @@ Error:
     // Check if this is a grayscale profile.
     if (cmsGetColorSpace(hProfile) == cmsSigGrayData) {
 
-        // if so, build appropriate conversion tables.
+        // if so, build appropiate conversion tables.
         // The tables are the PCS iluminant, scaled across GrayTRC
         return BuildGrayInputMatrixPipeline(hProfile);
     }
@@ -549,7 +549,7 @@ cmsPipeline* _cmsReadFloatOutputTag(cmsHPROFILE hProfile, cmsTagSignature tagFlo
     if (Lut == NULL) return NULL;
     
     // If PCS is Lab or XYZ, the floating point tag is accepting data in the space encoding,
-    // and since the formatter has already accommodated to 0..1.0, we should undo this change
+    // and since the formatter has already accomodated to 0..1.0, we should undo this change
     if ( PCS == cmsSigLabData)
     {
         if (!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageNormalizeToLabFloat(ContextID)))
@@ -590,7 +590,7 @@ cmsPipeline* _cmsReadOutputLUT(cmsHPROFILE hProfile, int Intent)
     cmsContext ContextID  = cmsGetProfileContextID(hProfile);
 
 
-    if (Intent >= INTENT_PERCEPTUAL && Intent <= INTENT_ABSOLUTE_COLORIMETRIC) {
+    if (Intent != -1) {
 
         tag16 = PCS2Device16[Intent];
         tagFloat = PCS2DeviceFloat[Intent];
@@ -651,7 +651,7 @@ Error:
     // Check if this is a grayscale profile.
     if (cmsGetColorSpace(hProfile) == cmsSigGrayData) {
 
-        // if so, build appropriate conversion tables.
+        // if so, build appropiate conversion tables.
         // The tables are the PCS iluminant, scaled across GrayTRC
         return BuildGrayOutputPipeline(hProfile);
     }
@@ -709,21 +709,15 @@ cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
 {
     cmsPipeline* Lut;
     cmsTagTypeSignature OriginalType;
-    cmsTagSignature tag16;
-    cmsTagSignature tagFloat;
+    cmsTagSignature tag16    = Device2PCS16[Intent];
+    cmsTagSignature tagFloat = Device2PCSFloat[Intent];
     cmsContext ContextID = cmsGetProfileContextID(hProfile);
 
 
-    if (Intent < INTENT_PERCEPTUAL || Intent > INTENT_ABSOLUTE_COLORIMETRIC)
-        return NULL;
-
-    tag16 = Device2PCS16[Intent];
-    tagFloat = Device2PCSFloat[Intent];
-
-    // On named color, take the appropriate tag
+    // On named color, take the appropiate tag
     if (cmsGetDeviceClass(hProfile) == cmsSigNamedColorClass) {
 
-        cmsNAMEDCOLORLIST* nc = (cmsNAMEDCOLORLIST*)cmsReadTag(hProfile, cmsSigNamedColor2Tag);
+        cmsNAMEDCOLORLIST* nc = (cmsNAMEDCOLORLIST*) cmsReadTag(hProfile, cmsSigNamedColor2Tag);
 
         if (nc == NULL) return NULL;
 
@@ -739,13 +733,12 @@ cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
                 goto Error;
 
         return Lut;
-    Error:
+Error:
         cmsPipelineFree(Lut);
         cmsFreeNamedColorList(nc);
         return NULL;
     }
 
-
     if (cmsIsTag(hProfile, tagFloat)) {  // Float tag takes precedence
 
         // Floating point LUT are always V
@@ -755,19 +748,19 @@ cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
     tagFloat = Device2PCSFloat[0];
     if (cmsIsTag(hProfile, tagFloat)) {
 
-        return cmsPipelineDup((cmsPipeline*)cmsReadTag(hProfile, tagFloat));
+        return cmsPipelineDup((cmsPipeline*) cmsReadTag(hProfile, tagFloat));
     }
 
     if (!cmsIsTag(hProfile, tag16)) {  // Is there any LUT-Based table?
 
-        tag16 = Device2PCS16[0];
+        tag16    = Device2PCS16[0];
         if (!cmsIsTag(hProfile, tag16)) return NULL;
     }
 
     // Check profile version and LUT type. Do the necessary adjustments if needed
 
     // Read the tag
-    Lut = (cmsPipeline*)cmsReadTag(hProfile, tag16);
+    Lut = (cmsPipeline*) cmsReadTag(hProfile, tag16);
     if (Lut == NULL) return NULL;
 
     // The profile owns the Lut, so we need to copy it
@@ -780,7 +773,7 @@ cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
         ChangeInterpolationToTrilinear(Lut);
 
     // After reading it, we have info about the original type
-    OriginalType = _cmsGetTagTrueType(hProfile, tag16);
+    OriginalType =  _cmsGetTagTrueType(hProfile, tag16);
 
     // We need to adjust data for Lab16 on output
     if (OriginalType != cmsSigLut16Type) return Lut;
@@ -788,12 +781,12 @@ cmsPipeline* _cmsReadDevicelinkLUT(cmsHPROFILE hProfile, int Intent)
     // Here it is possible to get Lab on both sides
 
     if (cmsGetColorSpace(hProfile) == cmsSigLabData) {
-        if (!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID)))
+        if(!cmsPipelineInsertStage(Lut, cmsAT_BEGIN, _cmsStageAllocLabV4ToV2(ContextID)))
             goto Error2;
     }
 
     if (cmsGetPCS(hProfile) == cmsSigLabData) {
-        if (!cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID)))
+        if(!cmsPipelineInsertStage(Lut, cmsAT_END, _cmsStageAllocLabV2ToV4(ContextID)))
             goto Error2;
     }
 
@@ -928,7 +921,7 @@ cmsBool _cmsWriteProfileSequence(cmsHPROFILE hProfile, const cmsSEQ* seq)
 }
 
 
-// Auxiliary, read and duplicate a MLU if found.
+// Auxiliar, read and duplicate a MLU if found.
 static
 cmsMLU* GetMLUFromProfile(cmsHPROFILE h, cmsTagSignature sig)
 {

thirdparty/liblcms2/src/cmsmtrx.c

@@ -38,7 +38,7 @@ void CMSEXPORT _cmsVEC3init(cmsVEC3* r, cmsFloat64Number x, cmsFloat64Number y,
     r -> n[VZ] = z;
 }
 
-// Vector subtraction
+// Vector substraction
 void CMSEXPORT _cmsVEC3minus(cmsVEC3* r, const cmsVEC3* a, const cmsVEC3* b)
 {
   r -> n[VX] = a -> n[VX] - b -> n[VX];

thirdparty/liblcms2/src/cmsnamed.c

@@ -206,10 +206,10 @@ void strFrom16(char str[3], cmsUInt16Number n)
 
 }
 
-// Add an ASCII entry. Do not add any \0 termination (ICC1v43_2010-12.pdf page 61)
+// Add an ASCII entry.
 cmsBool CMSEXPORT cmsMLUsetASCII(cmsMLU* mlu, const char LanguageCode[3], const char CountryCode[3], const char* ASCIIString)
 {
-    cmsUInt32Number i, len = (cmsUInt32Number) strlen(ASCIIString);
+    cmsUInt32Number i, len = (cmsUInt32Number) strlen(ASCIIString)+1;
     wchar_t* WStr;
     cmsBool  rc;
     cmsUInt16Number Lang  = strTo16(LanguageCode);
@@ -243,7 +243,8 @@ cmsUInt32Number mywcslen(const wchar_t *s)
     return (cmsUInt32Number)(p - s);
 }
 
-// Add a wide entry. Do not add any \0 terminator (ICC1v43_2010-12.pdf page 61)
+
+// Add a wide entry
 cmsBool  CMSEXPORT cmsMLUsetWide(cmsMLU* mlu, const char Language[3], const char Country[3], const wchar_t* WideString)
 {
     cmsUInt16Number Lang  = strTo16(Language);
@@ -253,7 +254,7 @@ cmsBool  CMSEXPORT cmsMLUsetWide(cmsMLU* mlu, const char Language[3], const char
     if (mlu == NULL) return FALSE;
     if (WideString == NULL) return FALSE;
 
-    len = (cmsUInt32Number) (mywcslen(WideString)) * sizeof(wchar_t);
+    len = (cmsUInt32Number) (mywcslen(WideString) + 1) * sizeof(wchar_t);
     return AddMLUBlock(mlu, len, WideString, Lang, Cntry);
 }
 

thirdparty/liblcms2/src/cmsopt.c

@@ -529,7 +529,7 @@ cmsBool  PatchLUT(cmsStage* CLUT, cmsUInt16Number At[], cmsUInt16Number Value[],
             return TRUE;
 }
 
-// Auxiliary, to see if two values are equal or very different
+// Auxiliar, to see if two values are equal or very different
 static
 cmsBool WhitesAreEqual(int n, cmsUInt16Number White1[], cmsUInt16Number White2[] )
 {
@@ -537,7 +537,7 @@ cmsBool WhitesAreEqual(int n, cmsUInt16Number White1[], cmsUInt16Number White2[]
 
     for (i=0; i < n; i++) {
 
-        if (abs(White1[i] - White2[i]) > 0xf000) return TRUE;  // Values are so extremely different that the fixup should be avoided
+        if (abs(White1[i] - White2[i]) > 0xf000) return TRUE;  // Values are so extremly different that the fixup should be avoided
         if (White1[i] != White2[i]) return FALSE;
     }
     return TRUE;

thirdparty/liblcms2/src/cmspack.c

@@ -81,7 +81,7 @@ typedef struct {
 #define ANYFLAVOR       FLAVOR_SH(1)
 
 
-// Suppress waning about info never being used
+// Supress waning about info never being used
 
 #ifdef _MSC_VER
 #pragma warning(disable : 4100)

thirdparty/liblcms2/src/cmspcs.c

@@ -308,7 +308,7 @@ void CMSEXPORT cmsFloat2LabEncoded(cmsUInt16Number wLab[3], const cmsCIELab* fLa
     wLab[2] = ab2Fix4(Lab.b);
 }
 
-// Auxiliary: convert to Radians
+// Auxiliar: convert to Radians
 static
 cmsFloat64Number RADIANS(cmsFloat64Number deg)
 {
@@ -316,7 +316,7 @@ cmsFloat64Number RADIANS(cmsFloat64Number deg)
 }
 
 
-// Auxiliary: atan2 but operating in degrees and returning 0 if a==b==0
+// Auxiliar: atan2 but operating in degrees and returning 0 if a==b==0
 static
 cmsFloat64Number atan2deg(cmsFloat64Number a, cmsFloat64Number b)
 {
@@ -339,7 +339,7 @@ cmsFloat64Number atan2deg(cmsFloat64Number a, cmsFloat64Number b)
 }
 
 
-// Auxiliary: Square
+// Auxiliar: Square
 static
 cmsFloat64Number Sqr(cmsFloat64Number v)
 {

thirdparty/liblcms2/src/cmsplugin.c

@@ -107,7 +107,7 @@ void CMSEXPORT  _cmsAdjustEndianess64(cmsUInt64Number* Result, cmsUInt64Number*
 #endif
 }
 
-// Auxiliary -- read 8, 16 and 32-bit numbers
+// Auxiliar -- read 8, 16 and 32-bit numbers
 cmsBool CMSEXPORT  _cmsReadUInt8Number(cmsIOHANDLER* io, cmsUInt8Number* n)
 {
     cmsUInt8Number tmp;
@@ -172,13 +172,13 @@ cmsBool CMSEXPORT  _cmsReadFloat32Number(cmsIOHANDLER* io, cmsFloat32Number* n)
 
     _cmsAssert(io != NULL);
 
-    if (io -> Read(io, &tmp, sizeof(cmsUInt32Number), 1) != 1)
+    if (io -> Read(io, &tmp, sizeof(cmsFloat32Number), 1) != 1)
             return FALSE;
 
     if (n != NULL) {
 
         tmp = _cmsAdjustEndianess32(tmp);
-        *n = *(cmsFloat32Number*) (void*) &tmp;
+        *n = *(cmsFloat32Number*) &tmp;
     }
     return TRUE;
 }
@@ -289,7 +289,7 @@ cmsBool CMSEXPORT  _cmsWriteFloat32Number(cmsIOHANDLER* io, cmsFloat32Number n)
 
     _cmsAssert(io != NULL);
 
-    tmp = *(cmsUInt32Number*) (void*) &n;
+    tmp = *(cmsUInt32Number*) &n;
     tmp = _cmsAdjustEndianess32(tmp);
     if (io -> Write(io, sizeof(cmsUInt32Number), &tmp) != 1)
             return FALSE;
@@ -485,10 +485,7 @@ cmsBool CMSEXPORT _cmsIOPrintf(cmsIOHANDLER* io, const char* frm, ...)
     va_start(args, frm);
 
     len = vsnprintf((char*) Buffer, 2047, frm, args);
-    if (len < 0) {
-        va_end(args);
-        return FALSE;   // Truncated, which is a fatal error for us
-    }
+    if (len < 0) return FALSE;   // Truncated, which is a fatal error for us
 
     rc = io ->Write(io, len, Buffer);
 

thirdparty/liblcms2/src/cmsps2.c

@@ -579,7 +579,7 @@ void EmitNGamma(cmsIOHANDLER* m, int n, cmsToneCurve* g[])
 //
 //  Each row contains Pipeline values for all but first component. So, I
 //  detect row changing by keeping a copy of last value of first
-//  component. -1 is used to mark beginning of whole block.
+//  component. -1 is used to mark begining of whole block.
 
 static
 int OutputValueSampler(register const cmsUInt16Number In[], register cmsUInt16Number Out[], register void* Cargo)

thirdparty/liblcms2/src/cmssm.c

@@ -318,7 +318,7 @@ void CMSEXPORT cmsGBDFree(cmsHANDLE hGBD)
 }
 
 
-// Auxiliary to retrieve a pointer to the segmentr containing the Lab value
+// Auxiliar to retrieve a pointer to the segmentr containing the Lab value
 static
 cmsGDBPoint* GetPoint(cmsGDB* gbd, const cmsCIELab* Lab, cmsSpherical* sp)
 {
@@ -330,7 +330,7 @@ cmsGDBPoint* GetPoint(cmsGDB* gbd, const cmsCIELab* Lab, cmsSpherical* sp)
     _cmsAssert(Lab != NULL);
     _cmsAssert(sp != NULL);
 
-    // Center L* by subtracting half of its domain, that's 50
+    // Center L* by substracting half of its domain, that's 50
     _cmsVEC3init(&v, Lab ->L - 50.0, Lab ->a, Lab ->b);
 
     // Convert to spherical coordinates

thirdparty/liblcms2/src/cmstypes.c

@@ -30,7 +30,7 @@
 // This file implements every single tag and tag type as described in the ICC spec. Some types
 // have been deprecated, like ncl and Data. There is no implementation for those types as there
 // are no profiles holding them. The programmer can also extend this list by defining his own types
-// by using the appropriate plug-in. There are three types of plug ins regarding that. First type
+// by using the appropiate plug-in. There are three types of plug ins regarding that. First type
 // allows to define new tags using any existing type. Next plug-in type allows to define new types
 // and the third one is very specific: allows to extend the number of elements in the multiprocessing
 // elements special type.
@@ -113,7 +113,7 @@ cmsTagTypeHandler* GetHandler(cmsTagTypeSignature sig, _cmsTagTypeLinkedList* Pl
 }
 
 
-// Auxiliary to convert UTF-32 to UTF-16 in some cases
+// Auxiliar to convert UTF-32 to UTF-16 in some cases
 static
 cmsBool _cmsWriteWCharArray(cmsIOHANDLER* io, cmsUInt32Number n, const wchar_t* Array)
 {
@@ -129,7 +129,7 @@ cmsBool _cmsWriteWCharArray(cmsIOHANDLER* io, cmsUInt32Number n, const wchar_t*
     return TRUE;
 }
 
-// Auxiliary to read an array of wchar_t
+// Auxiliar to read an array of wchar_t
 static
 cmsBool _cmsReadWCharArray(cmsIOHANDLER* io, cmsUInt32Number n, wchar_t* Array)
 {
@@ -160,7 +160,7 @@ typedef cmsBool (* PositionTableEntryFn)(struct _cms_typehandler_struct* self,
                                              cmsUInt32Number n,
                                              cmsUInt32Number SizeOfTag);
 
-// Helper function to deal with position tables as described in ICC spec 4.3
+// Helper function to deal with position tables as decribed in ICC spec 4.3
 // A table of n elements is readed, where first comes n records containing offsets and sizes and
 // then a block containing the data itself. This allows to reuse same data in more than one entry
 static
@@ -994,7 +994,7 @@ cmsBool  Type_Text_Description_Write(struct _cms_typehandler_struct* self, cmsIO
     }
 
     // Tell the real text len including the null terminator and padding
-    len_text = (cmsUInt32Number) strlen(Text) + 1;
+    len_text = strlen(Text) + 1;
     // Compute an total tag size requirement
     len_tag_requirement = (8+4+len_text+4+4+2*len_text+2+1+67);
     len_aligned = _cmsALIGNLONG(len_tag_requirement);
@@ -1474,7 +1474,7 @@ void *Type_MLU_Read(struct _cms_typehandler_struct* self, cmsIOHANDLER* io, cmsU
             LargestPosition = EndOfThisString;
     }
 
-    // Now read the remaining of tag and fill all strings. Subtract the directory
+    // Now read the remaining of tag and fill all strings. Substract the directory
     SizeOfTag   = (LargestPosition * sizeof(wchar_t)) / sizeof(cmsUInt16Number);
     if (SizeOfTag == 0)
     {
@@ -3609,7 +3609,7 @@ country varies for each element:
 
 
 
-// Auxiliary, read an string specified as count + string
+// Auxiliar, read an string specified as count + string
 static
 cmsBool  ReadCountAndSting(struct _cms_typehandler_struct* self, cmsIOHANDLER* io, cmsMLU* mlu, cmsUInt32Number* SizeOfTag, const char* Section)
 {
@@ -4312,13 +4312,13 @@ Error:
 static
 cmsBool  Type_MPEclut_Write(struct _cms_typehandler_struct* self, cmsIOHANDLER* io, void* Ptr, cmsUInt32Number nItems)
 {
-    cmsUInt8Number Dimensions8[16];  // 16 because the spec says 16 and not max number of channels
+    cmsUInt8Number Dimensions8[16];
     cmsUInt32Number i;
     cmsStage* mpe = (cmsStage*) Ptr;
     _cmsStageCLutData* clut = (_cmsStageCLutData*) mpe ->Data;
 
-    // Check for maximum number of channels supported by lcms
-    if (mpe -> InputChannels > MAX_INPUT_DIMENSIONS) return FALSE;
+    // Check for maximum number of channels
+    if (mpe -> InputChannels > 15) return FALSE;
 
     // Only floats are supported in MPE
     if (clut ->HasFloatValues == FALSE) return FALSE;

thirdparty/liblcms2/src/cmsvirt.c

@@ -1138,20 +1138,15 @@ cmsHPROFILE CMSEXPORT cmsTransform2DeviceLink(cmsHTRANSFORM hTransform, cmsFloat
     // If no way, then force CLUT that for sure can be written
     if (AllowedLUT == NULL) {
 
-        cmsStage* FirstStage;
-        cmsStage* LastStage;
-
         dwFlags |= cmsFLAGS_FORCE_CLUT;
         _cmsOptimizePipeline(ContextID, &LUT, xform ->RenderingIntent, &FrmIn, &FrmOut, &dwFlags);
 
         // Put identity curves if needed
-        FirstStage = cmsPipelineGetPtrToFirstStage(LUT);
-        if (FirstStage != NULL && FirstStage ->Type != cmsSigCurveSetElemType)
+        if (cmsPipelineGetPtrToFirstStage(LUT) ->Type != cmsSigCurveSetElemType)
              if (!cmsPipelineInsertStage(LUT, cmsAT_BEGIN, _cmsStageAllocIdentityCurves(ContextID, ChansIn)))
                  goto Error;
 
-        LastStage = cmsPipelineGetPtrToLastStage(LUT);
-        if (LastStage != NULL && LastStage ->Type != cmsSigCurveSetElemType)
+        if (cmsPipelineGetPtrToLastStage(LUT) ->Type != cmsSigCurveSetElemType)
              if (!cmsPipelineInsertStage(LUT, cmsAT_END,   _cmsStageAllocIdentityCurves(ContextID, ChansOut)))
                  goto Error;
 

thirdparty/liblcms2/src/cmsxform.c

@@ -413,7 +413,7 @@ void PrecalculatedXFORM(_cmsTRANSFORM* p,
 }
 
 
-// Auxiliary: Handle precalculated gamut check. The retrieval of context may be alittle bit slow, but this function is not critical.
+// Auxiliar: Handle precalculated gamut check. The retrieval of context may be alittle bit slow, but this function is not critical.
 static
 void TransformOnePixelWithGamutCheck(_cmsTRANSFORM* p,
                                      const cmsUInt16Number wIn[],

thirdparty/liblcms2/src/lcms2_internal.h

@@ -739,7 +739,7 @@ typedef struct _cms_iccprofile_struct {
     // Dictionary
     cmsUInt32Number          TagCount;
     cmsTagSignature          TagNames[MAX_TABLE_TAG];
-    cmsTagSignature          TagLinked[MAX_TABLE_TAG];           // The tag to which is linked (0=none)
+    cmsTagSignature          TagLinked[MAX_TABLE_TAG];           // The tag to wich is linked (0=none)
     cmsUInt32Number          TagSizes[MAX_TABLE_TAG];            // Size on disk
     cmsUInt32Number          TagOffsets[MAX_TABLE_TAG];
     cmsBool                  TagSaveAsRaw[MAX_TABLE_TAG];        // True to write uncooked

thirdparty/libpng/LICENSE

@@ -10,7 +10,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.0.7, July 1, 2000 through 1.6.25, September 1, 2016 are
+libpng versions 1.0.7, July 1, 2000, through 1.6.21, January 15, 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
@@ -32,10 +32,6 @@ and with the following additions to the disclaimer:
    risk of satisfactory quality, performance, accuracy, and effort is with
    the user.
 
-Some files in the "contrib" directory and some configure-generated
-files that are distributed with libpng have other copyright owners and
-are released under other open source licenses.
-
 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
 Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
 libpng-0.96, and are distributed according to the same disclaimer and
@@ -59,9 +55,6 @@ Contributing Authors:
    Greg Roelofs
    Tom Tanner
 
-Some files in the "scripts" directory have other copyright owners
-but are released under this license.
-
 libpng versions 0.5, May 1995, through 0.88, January 1996, are
 Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
 
@@ -102,29 +95,18 @@ appreciated.
 
 END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
 
-TRADEMARK:
+A "png_get_copyright" function is available, for convenient use in "about"
+boxes and the like:
 
-The name "libpng" has not been registered by the Copyright owner
-as a trademark in any jurisdiction.  However, because libpng has
-been distributed and maintained world-wide, continually since 1995,
-the Copyright owner claims "common-law trademark protection" in any
-jurisdiction where common-law trademark is recognized.
+   printf("%s", png_get_copyright(NULL));
 
-OSI CERTIFICATION:
+Also, the PNG logo (in PNG format, of course) is supplied in the
+files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
 
 Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
 a certification mark of the Open Source Initiative. OSI has not addressed
 the additional disclaimers inserted at version 1.0.7.
 
-EXPORT CONTROL:
-
-The Copyright owner believes that the Export Control Classification
-Number (ECCN) for libpng is EAR99, which means not subject to export
-controls or International Traffic in Arms Regulations (ITAR) because
-it is open source, publicly available software, that does not contain
-any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
-734.7(b).
-
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-September 1, 2016
+January 15, 2016

thirdparty/libpng/png.c

@@ -1,8 +1,8 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.6.25 [September 1, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.19 [November 12, 2015]
+ * 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_25 Your_png_h_is_not_version_1_6_25;
+typedef png_libpng_version_1_6_21 Your_png_h_is_not_version_1_6_21;
 
 /* 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 1.6.25 - September 1, 2016" PNG_STRING_NEWLINE \
+      "libpng version 1.6.21 - January 15, 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 1.6.25 - September 1, 2016\
+   return "libpng version 1.6.21 - January 15, 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;
@@ -1931,55 +1931,21 @@ png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
 static const png_byte D50_nCIEXYZ[12] =
    { 0x00, 0x00, 0xf6, 0xd6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x2d };
 
-static int /* bool */
-icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length)
+int /* PRIVATE */
+png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
+   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;
 }
 
-#ifdef PNG_READ_iCCP_SUPPORTED
-int /* PRIVATE */
-png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
-    png_const_charp name, png_uint_32 profile_length)
-{
-   if (!icc_check_length(png_ptr, colorspace, name, profile_length))
-      return 0;
-
-   /* This needs to be here because the 'normal' check is in
-    * png_decompress_chunk, yet this happens after the attempt to
-    * png_malloc_base the required data.  We only need this on read; on write
-    * the caller supplies the profile buffer so libpng doesn't allocate it.  See
-    * the call to icc_check_length below (the write case).
-    */
-#  ifdef PNG_SET_USER_LIMITS_SUPPORTED
-      else if (png_ptr->user_chunk_malloc_max > 0 &&
-               png_ptr->user_chunk_malloc_max < profile_length)
-         return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-             "exceeds application limits");
-#  elif PNG_USER_CHUNK_MALLOC_MAX > 0
-      else if (PNG_USER_CHUNK_MALLOC_MAX < profile_length)
-         return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-             "exceeds libpng limits");
-#  else /* !SET_USER_LIMITS */
-      /* This will get compiled out on all 32-bit and better systems. */
-      else if (PNG_SIZE_MAX < profile_length)
-         return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
-             "exceeds system limits");
-#  endif /* !SET_USER_LIMITS */
-
-   return 1;
-}
-#endif /* READ_iCCP */
-
 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;
 
@@ -1991,18 +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.
@@ -2010,14 +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
@@ -2034,7 +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,
@@ -2045,7 +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
@@ -2073,18 +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
@@ -2109,7 +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
@@ -2119,7 +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
@@ -2127,7 +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:
@@ -2137,7 +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;
    }
 
@@ -2153,7 +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;
@@ -2161,8 +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;
@@ -2190,7 +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
@@ -2198,7 +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 */
@@ -2226,22 +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
@@ -2249,8 +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,
@@ -2260,17 +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
@@ -2354,7 +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
@@ -2364,8 +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;
@@ -2388,36 +2354,38 @@ 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 (icc_check_length(png_ptr, colorspace, name, profile_length) != 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)
    {
-#     if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0
+#     ifdef PNG_sRGB_SUPPORTED
          /* If no sRGB support, don't try storing sRGB information */
          png_icc_set_sRGB(png_ptr, colorspace, profile, 0);
 #     endif
@@ -2476,7 +2444,7 @@ 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
          {
@@ -2502,7 +2470,7 @@ 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))
@@ -2510,9 +2478,9 @@ 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;
 
@@ -2675,7 +2643,7 @@ 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;
@@ -3838,25 +3806,25 @@ 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;
@@ -3895,7 +3863,7 @@ 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);
@@ -3972,7 +3940,7 @@ 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;
@@ -4040,7 +4008,7 @@ 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);
@@ -4120,133 +4088,131 @@ 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 */

thirdparty/libpng/png.h

@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.25, September 1, 2016
+ * libpng version 1.6.21, January 15, 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 1.6.25, September 1, 2016:
+ *   libpng versions 0.97, January 1998, through 1.6.21, January 15, 2016:
  *     Glenn Randers-Pehrson.
  *   See also "Contributing Authors", below.
  */
@@ -25,11 +25,7 @@
  *
  * This code is released under the libpng license.
  *
- * Some files in the "contrib" directory and some configure-generated
- * 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 1.6.25, September 1, 2016 are
+ * libpng versions 1.0.7, July 1, 2000, through 1.6.21, January 15, 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
@@ -41,7 +37,6 @@
  *    Cosmin Truta
  *    Gilles Vollant
  *    James Yu
- *    Mandar Sahastrabuddhe
  *
  * and with the following additions to the disclaimer:
  *
@@ -52,10 +47,6 @@
  *    risk of satisfactory quality, performance, accuracy, and effort is with
  *    the user.
  *
- * Some files in the "contrib" directory have other copyright owners and
- * are released under other open source licenses.
- *
- *
  * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
  * Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
  * libpng-0.96, and are distributed according to the same disclaimer and
@@ -66,9 +57,6 @@
  *    Glenn Randers-Pehrson
  *    Willem van Schaik
  *
- * Some files in the "scripts" directory have different copyright owners
- * but are also released under this license.
- *
  * libpng versions 0.89, June 1996, through 0.96, May 1997, are
  * Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
  * and are distributed according to the same disclaimer and license as
@@ -82,9 +70,6 @@
  *    Greg Roelofs
  *    Tom Tanner
  *
- * Some files in the "scripts" directory have other copyright owners
- * but are released under this license.
- *
  * libpng versions 0.5, May 1995, through 0.88, January 1996, are
  * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
  *
@@ -124,29 +109,6 @@
  * appreciated.
  *
  * END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
- *
- * TRADEMARK:
- *
- * The name "libpng" has not been registered by the Copyright owner
- * as a trademark in any jurisdiction.  However, because libpng has
- * been distributed and maintained world-wide, continually since 1995,
- * the Copyright owner claims "common-law trademark protection" in any
- * jurisdiction where common-law trademark is recognized.
- *
- * OSI CERTIFICATION:
- *
- * Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
- * a certification mark of the Open Source Initiative. OSI has not addressed
- * the additional disclaimers inserted at version 1.0.7.
- *
- * EXPORT CONTROL:
- *
- * The Copyright owner believes that the Export Control Classification
- * Number (ECCN) for libpng is EAR99, which means not subject to export
- * controls or International Traffic in Arms Regulations (ITAR) because
- * it is open source, publicly available software, that does not contain
- * any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
- * 734.7(b).
  */
 
 /*
@@ -159,6 +121,12 @@
  * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
  */
 
+/*
+ * Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
+ * a certification mark of the Open Source Initiative. OSI has not addressed
+ * the additional disclaimers inserted at version 1.0.7.
+ */
+
 /*
  * The contributing authors would like to thank all those who helped
  * with testing, bug fixes, and patience.  This wouldn't have been
@@ -214,11 +182,11 @@
  *    ...
  *    1.0.19                  10    10019  10.so.0.19[.0]
  *    ...
- *    1.2.56                  13    10256  12.so.0.56[.0]
+ *    1.2.53                  13    10253  12.so.0.53[.0]
  *    ...
- *    1.5.27                  15    10527  15.so.15.27[.0]
+ *    1.5.23                  15    10523  15.so.15.23[.0]
  *    ...
- *    1.6.25                  16    10625  16.so.16.25[.0]
+ *    1.6.21                  16    10621  16.so.16.21[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -246,13 +214,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    September 1, 2016
+ *    January 15, 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 1.6.25 are Y2K compliant.  It is my belief that
+ *    upward through 1.6.21 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
@@ -314,8 +282,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.25"
-#define PNG_HEADER_VERSION_STRING " libpng version 1.6.25 - September 1, 2016\n"
+#define PNG_LIBPNG_VER_STRING "1.6.21"
+#define PNG_HEADER_VERSION_STRING \
+     " libpng version 1.6.21 - January 15, 2016\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
@@ -323,7 +292,7 @@
 /* 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 25
+#define PNG_LIBPNG_VER_RELEASE 21
 
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
@@ -354,20 +323,20 @@
  * 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 10625 /* 1.6.25 */
+#define PNG_LIBPNG_VER 10621 /* 1.6.21 */
 
 /* 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 +433,7 @@ 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_25;
+typedef char* png_libpng_version_1_6_21;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *
@@ -657,17 +626,17 @@ 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;
 
@@ -765,22 +734,24 @@ typedef png_unknown_chunk * * png_unknown_chunkpp;
  * data in the info_struct to be written into the output file.  The values
  * of the PNG_INFO_<chunk> defines should NOT be changed.
  */
-#define PNG_INFO_gAMA 0x0001U
-#define PNG_INFO_sBIT 0x0002U
-#define PNG_INFO_cHRM 0x0004U
-#define PNG_INFO_PLTE 0x0008U
-#define PNG_INFO_tRNS 0x0010U
-#define PNG_INFO_bKGD 0x0020U
-#define PNG_INFO_hIST 0x0040U
-#define PNG_INFO_pHYs 0x0080U
-#define PNG_INFO_oFFs 0x0100U
-#define PNG_INFO_tIME 0x0200U
-#define PNG_INFO_pCAL 0x0400U
-#define PNG_INFO_sRGB 0x0800U  /* GR-P, 0.96a */
-#define PNG_INFO_iCCP 0x1000U  /* ESR, 1.0.6 */
-#define PNG_INFO_sPLT 0x2000U  /* ESR, 1.0.6 */
-#define PNG_INFO_sCAL 0x4000U  /* ESR, 1.0.6 */
-#define PNG_INFO_IDAT 0x8000U  /* ESR, 1.0.6 */
+#define PNG_INFO_gAMA 0x0001
+#define PNG_INFO_sBIT 0x0002
+#define PNG_INFO_cHRM 0x0004
+#define PNG_INFO_PLTE 0x0008
+#define PNG_INFO_tRNS 0x0010
+#define PNG_INFO_bKGD 0x0020
+#define PNG_INFO_hIST 0x0040
+#define PNG_INFO_pHYs 0x0080
+#define PNG_INFO_oFFs 0x0100
+#define PNG_INFO_tIME 0x0200
+#define PNG_INFO_pCAL 0x0400
+#define PNG_INFO_sRGB 0x0800   /* GR-P, 0.96a */
+#define PNG_INFO_iCCP 0x1000   /* ESR, 1.0.6 */
+#define PNG_INFO_sPLT 0x2000   /* ESR, 1.0.6 */
+#define PNG_INFO_sCAL 0x4000   /* ESR, 1.0.6 */
+#if INT_MAX >= 0x8000 /* else this might break */
+#define PNG_INFO_IDAT 0x8000   /* ESR, 1.0.6 */
+#endif
 
 /* This is used for the transformation routines, as some of them
  * change these values for the row.  It also should enable using
@@ -1351,7 +1322,7 @@ PNG_EXPORT(229, void, png_set_scale_16, (png_structrp png_ptr));
 #endif
 
 #ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
-#define PNG_READ_16_TO_8_SUPPORTED /* Name prior to 1.5.4 */
+#define PNG_READ_16_TO_8 SUPPORTED /* Name prior to 1.5.4 */
 /* Strip the second byte of information from a 16-bit depth file. */
 PNG_EXPORT(48, void, png_set_strip_16, (png_structrp png_ptr));
 #endif
@@ -1502,8 +1473,8 @@ PNG_EXPORT(67, void, png_set_filter, (png_structrp png_ptr, int method,
 #define PNG_FILTER_UP      0x20
 #define PNG_FILTER_AVG     0x40
 #define PNG_FILTER_PAETH   0x80
-#define PNG_FAST_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP)
-#define PNG_ALL_FILTERS (PNG_FAST_FILTERS | PNG_FILTER_AVG | PNG_FILTER_PAETH)
+#define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \
+                         PNG_FILTER_AVG | PNG_FILTER_PAETH)
 
 /* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now.
  * These defines should NOT be changed.
@@ -1780,21 +1751,21 @@ PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr,
 #define PNG_SET_WILL_FREE_DATA 1
 #define PNG_USER_WILL_FREE_DATA 2
 /* Flags for png_ptr->free_me and info_ptr->free_me */
-#define PNG_FREE_HIST 0x0008U
-#define PNG_FREE_ICCP 0x0010U
-#define PNG_FREE_SPLT 0x0020U
-#define PNG_FREE_ROWS 0x0040U
-#define PNG_FREE_PCAL 0x0080U
-#define PNG_FREE_SCAL 0x0100U
+#define PNG_FREE_HIST 0x0008
+#define PNG_FREE_ICCP 0x0010
+#define PNG_FREE_SPLT 0x0020
+#define PNG_FREE_ROWS 0x0040
+#define PNG_FREE_PCAL 0x0080
+#define PNG_FREE_SCAL 0x0100
 #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-#  define PNG_FREE_UNKN 0x0200U
+#  define PNG_FREE_UNKN 0x0200
 #endif
-/*      PNG_FREE_LIST 0x0400U   removed in 1.6.0 because it is ignored */
-#define PNG_FREE_PLTE 0x1000U
-#define PNG_FREE_TRNS 0x2000U
-#define PNG_FREE_TEXT 0x4000U
-#define PNG_FREE_ALL  0x7fffU
-#define PNG_FREE_MUL  0x4220U /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
+/*      PNG_FREE_LIST 0x0400    removed in 1.6.0 because it is ignored */
+#define PNG_FREE_PLTE 0x1000
+#define PNG_FREE_TRNS 0x2000
+#define PNG_FREE_TEXT 0x4000
+#define PNG_FREE_ALL  0x7fff
+#define PNG_FREE_MUL  0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
 
 #ifdef PNG_USER_MEM_SUPPORTED
 PNG_EXPORTA(100, png_voidp, png_malloc_default, (png_const_structrp png_ptr,
@@ -2300,10 +2271,8 @@ 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,
@@ -2311,7 +2280,7 @@ 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 /* SET_UNKNOWN_CHUNKS */
+#endif
 
 #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
 PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr,
@@ -2532,37 +2501,33 @@ 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
@@ -2598,38 +2563,38 @@ 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
 
@@ -2924,19 +2889,12 @@ typedef struct
     * is the minimum 'row stride', the minimum count of components between each
     * row.  For a color-mapped image this is the minimum number of bytes in a
     * row.
-    *
-    * WARNING: this macro overflows for some images with more than one component
-    * and very large image widths.  libpng will refuse to process an image where
-    * this macro would overflow.
     */
 
 #define PNG_IMAGE_BUFFER_SIZE(image, row_stride)\
    (PNG_IMAGE_PIXEL_COMPONENT_SIZE((image).format)*(image).height*(row_stride))
    /* Return the size, in bytes, of an image buffer given a png_image and a row
     * stride - the number of components to leave space for in each row.
-    *
-    * WARNING: this macro overflows a 32-bit integer for some large PNG images,
-    * libpng will refuse to process an image where such an overflow would occur.
     */
 
 #define PNG_IMAGE_SIZE(image)\
@@ -3057,6 +3015,7 @@ PNG_EXPORT(238, void, png_image_free, (png_imagep image));
 #endif /* SIMPLIFIED_READ */
 
 #ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
 /* WRITE APIS
  * ----------
  * For write you must initialize a png_image structure to describe the image to
@@ -3073,7 +3032,6 @@ PNG_EXPORT(238, void, png_image_free, (png_imagep image));
  *    values do not correspond to the colors in sRGB.
  * colormap_entries: set to the number of entries in the color-map (0 to 256)
  */
-#ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED
 PNG_EXPORT(239, int, png_image_write_to_file, (png_imagep image,
    const char *file, int convert_to_8bit, const void *buffer,
    png_int_32 row_stride, const void *colormap));
@@ -3083,9 +3041,8 @@ PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file,
    int convert_to_8_bit, const void *buffer, png_int_32 row_stride,
    const void *colormap));
    /* Write the image to the given (FILE*). */
-#endif /* SIMPLIFIED_WRITE_STDIO */
 
-/* With all write APIs if image is in one of the linear formats with 16-bit
+/* With both write APIs if image is in one of the linear formats with 16-bit
  * data then setting convert_to_8_bit will cause the output to be an 8-bit PNG
  * gamma encoded according to the sRGB specification, otherwise a 16-bit linear
  * encoded PNG file is written.
@@ -3097,103 +3054,13 @@ PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file,
  *
  * With all APIs row_stride is handled as in the read APIs - it is the spacing
  * from one row to the next in component sized units (1 or 2 bytes) and if
- * negative indicates a bottom-up row layout in the buffer.  If row_stride is
- * zero, libpng will calculate it for you from the image width and number of
- * channels.
+ * negative indicates a bottom-up row layout in the buffer.  If row_stride is zero,
+ * libpng will calculate it for you from the image width and number of channels.
  *
- * Note that the write API does not support interlacing, sub-8-bit pixels or
- * most ancillary chunks.  If you need to write text chunks (e.g. for copyright
- * notices) you need to use one of the other APIs.
+ * Note that the write API does not support interlacing, sub-8-bit pixels, indexed
+ * PNG (color_type 3) or most ancillary chunks.
  */
-
-PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
-   png_alloc_size_t * PNG_RESTRICT memory_bytes, int convert_to_8_bit,
-   const void *buffer, png_int_32 row_stride, const void *colormap));
-   /* Write the image to the given memory buffer.  The function both writes the
-    * whole PNG data stream to *memory and updates *memory_bytes with the count
-    * of bytes written.
-    *
-    * 'memory' may be NULL.  In this case *memory_bytes is not read however on
-    * success the number of bytes which would have been written will still be
-    * stored in *memory_bytes.  On failure *memory_bytes will contain 0.
-    *
-    * If 'memory' is not NULL it must point to memory[*memory_bytes] of
-    * writeable memory.
-    *
-    * If the function returns success memory[*memory_bytes] (if 'memory' is not
-    * NULL) contains the written PNG data.  *memory_bytes will always be less
-    * than or equal to the original value.
-    *
-    * If the function returns false and *memory_bytes was not changed an error
-    * occured during write.  If *memory_bytes was changed, or is not 0 if
-    * 'memory' was NULL, the write would have succeeded but for the memory
-    * buffer being too small.  *memory_bytes contains the required number of
-    * bytes and will be bigger that the original value.
-    */
-
-#define png_image_write_get_memory_size(image, size, convert_to_8_bit, buffer,\
-   row_stride, colormap)\
-   png_image_write_to_memory(&(image), 0, &(size), convert_to_8_bit, buffer,\
-         row_stride, colormap)
-   /* Return the amount of memory in 'size' required to compress this image.
-    * The png_image structure 'image' must be filled in as in the above
-    * function and must not be changed before the actual write call, the buffer
-    * and all other parameters must also be identical to that in the final
-    * write call.  The 'size' variable need not be initialized.
-    *
-    * NOTE: the macro returns true/false, if false is returned 'size' will be
-    * set to zero and the write failed and probably will fail if tried again.
-    */
-
-/* You can pre-allocate the buffer by making sure it is of sufficient size
- * regardless of the amount of compression achieved.  The buffer size will
- * always be bigger than the original image and it will never be filled.  The
- * following macros are provided to assist in allocating the buffer.
- */
-#define PNG_IMAGE_DATA_SIZE(image) (PNG_IMAGE_SIZE(image)+(image).height)
-   /* The number of uncompressed bytes in the PNG byte encoding of the image;
-    * uncompressing the PNG IDAT data will give this number of bytes.
-    *
-    * NOTE: while PNG_IMAGE_SIZE cannot overflow for an image in memory this
-    * macro can because of the extra bytes used in the PNG byte encoding.  You
-    * need to avoid this macro if your image size approaches 2^30 in width or
-    * height.  The same goes for the remainder of these macros; they all produce
-    * bigger numbers than the actual in-memory image size.
-    */
-#ifndef PNG_ZLIB_MAX_SIZE
-#  define PNG_ZLIB_MAX_SIZE(b) ((b)+(((b)+7U)>>3)+(((b)+63U)>>6)+11U)
-   /* An upper bound on the number of compressed bytes given 'b' uncompressed
-    * bytes.  This is based on deflateBounds() in zlib; different
-    * implementations of zlib compression may conceivably produce more data so
-    * if your zlib implementation is not zlib itself redefine this macro
-    * appropriately.
-    */
-#endif
-
-#define PNG_IMAGE_COMPRESSED_SIZE_MAX(image)\
-   PNG_ZLIB_MAX_SIZE((png_alloc_size_t)PNG_IMAGE_DATA_SIZE(image))
-   /* An upper bound on the size of the data in the PNG IDAT chunks. */
-
-#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)+(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
-    * PNG_IMAGE_COMPRESSED_SIZE_MAX(image) as the second argument (most
-    * compilers should handle this just fine.)
-    */
-
-#define PNG_IMAGE_PNG_SIZE_MAX(image)\
-   PNG_IMAGE_PNG_SIZE_MAX_(image, PNG_IMAGE_COMPRESSED_SIZE_MAX(image))
-   /* An upper bound on the total length of the PNG data stream for 'image'.
-    * The result is of type png_alloc_size_t, on 32-bit systems this may
-    * overflow even though PNG_IMAGE_DATA_SIZE does not overflow; the write will
-    * run out of buffer space but return a corrected size which should work.
-    */
+#endif /* STDIO */
 #endif /* SIMPLIFIED_WRITE */
 /*******************************************************************************
  *  END OF SIMPLIFIED API
@@ -3227,10 +3094,7 @@ PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory,
 #endif
 #define PNG_MAXIMUM_INFLATE_WINDOW 2 /* SOFTWARE: force maximum window */
 #define PNG_SKIP_sRGB_CHECK_PROFILE 4 /* SOFTWARE: Check ICC profile for sRGB */
-#ifdef PNG_MIPS_MSA_API_SUPPORTED
-#  define PNG_MIPS_MSA   6 /* HARDWARE: MIPS Msa SIMD instructions supported */
-#endif
-#define PNG_OPTION_NEXT  8 /* Next option - numbers must be even */
+#define PNG_OPTION_NEXT  6 /* Next option - numbers must be even */
 
 /* Return values: NOTE: there are four values and 'off' is *not* zero */
 #define PNG_OPTION_UNSET   0 /* Unset - defaults to off */
@@ -3254,7 +3118,7 @@ PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
  * one to use is one more than this.)
  */
 #ifdef PNG_EXPORT_LAST_ORDINAL
-  PNG_EXPORT_LAST_ORDINAL(245);
+  PNG_EXPORT_LAST_ORDINAL(244);
 #endif
 
 #ifdef __cplusplus

thirdparty/libpng/pngconf.h

@@ -1,9 +1,9 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.6.25, September 1, 2016
+ * libpng version 1.6.21, January 15, 2016
  *
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * 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.)
  *
@@ -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

thirdparty/libpng/pngerror.c

@@ -1,8 +1,8 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.15 [November 20, 2014]
+ * Copyright (c) 1998-2002,2004,2006-2014 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
@@ -37,14 +37,14 @@ 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];
    if (png_ptr != NULL)
    {
       if ((png_ptr->flags &
-         (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0)
+         (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0
       {
          if (*error_message == PNG_LITERAL_SHARP)
          {
@@ -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);
       }

thirdparty/libpng/pngget.c

@@ -1,8 +1,8 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.17 [March 26, 2015]
+ * 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.)
  *
@@ -456,11 +456,11 @@ png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
    return (retval);
 }
 #endif /* pHYs */
-#endif /* INCH_CONVERSIONS */
+#endif  /* INCH_CONVERSIONS */
 
 /* png_get_channels really belongs in here, too, but it's been around longer */
 
-#endif /* EASY_ACCESS */
+#endif  /* EASY_ACCESS */
 
 
 png_byte PNGAPI
@@ -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);
    }
 
@@ -1142,19 +1142,19 @@ png_get_compression_buffer_size(png_const_structrp png_ptr)
       return 0;
 
 #ifdef PNG_WRITE_SUPPORTED
-   if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
+      if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
 #endif
    {
 #ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-      return png_ptr->IDAT_read_size;
+         return png_ptr->IDAT_read_size;
 #else
-      return PNG_IDAT_READ_SIZE;
+         return PNG_IDAT_READ_SIZE;
 #endif
    }
 
 #ifdef PNG_WRITE_SUPPORTED
-   else
-      return png_ptr->zbuffer_size;
+      else
+         return png_ptr->zbuffer_size;
 #endif
 }
 

thirdparty/libpng/pnglibconf.h

@@ -1,8 +1,8 @@
-/* libpng 1.6.25 STANDARD API DEFINITION */
+/* libpng 1.6.21 STANDARD API DEFINITION */
 
 /* pnglibconf.h - library build configuration */
 
-/* Libpng version 1.6.25 - September 1, 2016 */
+/* Libpng version 1.6.21 - January 15, 2016 */
 
 /* Copyright (c) 1998-2015 Glenn Randers-Pehrson */
 
@@ -109,7 +109,6 @@
 #define PNG_SIMPLIFIED_READ_SUPPORTED
 #define PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
 #define PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
-#define PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED
 #define PNG_SIMPLIFIED_WRITE_SUPPORTED
 #define PNG_STDIO_SUPPORTED
 #define PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED

thirdparty/libpng/pngmem.c

@@ -1,8 +1,8 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.6.24 [August 4, 2016%]
- * Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.15 [November 20, 2014]
+ * Copyright (c) 1998-2002,2004,2006-2014 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)
    {

thirdparty/libpng/pngpread.c

@@ -1,8 +1,8 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.18 [July 23, 2015]
+ * 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.)
  *
@@ -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;
@@ -210,14 +210,12 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
           (png_ptr->mode & PNG_HAVE_PLTE) == 0)
          png_error(png_ptr, "Missing PLTE before IDAT");
 
+      png_ptr->mode |= PNG_HAVE_IDAT;
       png_ptr->process_mode = PNG_READ_IDAT_MODE;
 
-      if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-         if ((png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) == 0)
-            if (png_ptr->push_length == 0)
-               return;
-
-      png_ptr->mode |= PNG_HAVE_IDAT;
+      if ((png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) == 0)
+         if (png_ptr->push_length == 0)
+            return;
 
       if ((png_ptr->mode & PNG_AFTER_IDAT) != 0)
          png_benign_error(png_ptr, "Too many IDATs found");
@@ -410,7 +408,7 @@ 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;
@@ -501,10 +499,7 @@ png_push_save_buffer(png_structrp png_ptr)
          png_error(png_ptr, "Insufficient memory for save_buffer");
       }
 
-      if (old_buffer)
-         memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
-      else if (png_ptr->save_buffer_size)
-         png_error(png_ptr, "save_buffer error");
+      memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
       png_free(png_ptr, old_buffer);
       png_ptr->save_buffer_max = new_max;
    }
@@ -521,7 +516,7 @@ 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 +619,7 @@ 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 +777,7 @@ 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 +1039,7 @@ 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

thirdparty/libpng/pngpriv.h

@@ -1,8 +1,8 @@
 
 /* pngpriv.h - private declarations for use inside libpng
  *
- * Last changed in libpng 1.6.25 [September 1, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.21 [January 15, 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.)
  *
@@ -182,35 +182,6 @@
 #  endif
 #endif /* PNG_ARM_NEON_OPT > 0 */
 
-#ifndef PNG_MIPS_MSA_OPT
-#  if defined(__mips_msa) && (__mips_isa_rev >= 5) && defined(PNG_ALIGNED_MEMORY_SUPPORTED)
-#     define PNG_MIPS_MSA_OPT 2
-#  else
-#     define PNG_MIPS_MSA_OPT 0
-#  endif
-#endif
-
-#if PNG_MIPS_MSA_OPT > 0
-#  define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_msa
-#  ifndef PNG_MIPS_MSA_IMPLEMENTATION
-#     if defined(__mips_msa)
-#        if defined(__clang__)
-#        elif defined(__GNUC__)
-#           if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7)
-#              define PNG_MIPS_MSA_IMPLEMENTATION 2
-#           endif /* no GNUC support */
-#        endif /* __GNUC__ */
-#     else /* !defined __mips_msa */
-#        define PNG_MIPS_MSA_IMPLEMENTATION 2
-#     endif /* __mips_msa */
-#  endif /* !PNG_MIPS_MSA_IMPLEMENTATION */
-
-#  ifndef PNG_MIPS_MSA_IMPLEMENTATION
-#     define PNG_MIPS_MSA_IMPLEMENTATION 1
-#  endif
-#endif /* PNG_MIPS_MSA_OPT > 0 */
-
-
 /* Is this a build of a DLL where compilation of the object modules requires
  * different preprocessor settings to those required for a simple library?  If
  * so PNG_BUILD_DLL must be set.
@@ -449,10 +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
@@ -460,9 +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
@@ -1054,7 +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
@@ -1203,7 +1174,6 @@ 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
@@ -1218,24 +1188,6 @@ 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
-
-#if PNG_MIPS_MSA_OPT > 0
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_msa,(png_row_infop row_info,
-    png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_msa,(png_row_infop
-    row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_msa,(png_row_infop
-    row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_msa,(png_row_infop
-    row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_msa,(png_row_infop
-    row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_msa,(png_row_infop
-    row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_msa,(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,
@@ -1461,7 +1413,7 @@ 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,
@@ -1500,13 +1452,13 @@ 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 */
@@ -1540,11 +1492,9 @@ PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr,
    /* The 'name' is used for information only */
 
 /* Routines for checking parts of an ICC profile. */
-#ifdef PNG_READ_iCCP_SUPPORTED
 PNG_INTERNAL_FUNCTION(int,png_icc_check_length,(png_const_structrp png_ptr,
    png_colorspacerp colorspace, png_const_charp name,
    png_uint_32 profile_length), PNG_EMPTY);
-#endif /* READ_iCCP */
 PNG_INTERNAL_FUNCTION(int,png_icc_check_header,(png_const_structrp png_ptr,
    png_colorspacerp colorspace, png_const_charp name,
    png_uint_32 profile_length,
@@ -1963,17 +1913,10 @@ 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
 
-#if PNG_MIPS_MSA_OPT > 0
-PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_msa,
-   (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
-#endif
-#endif
-
 PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr,
    png_const_charp key, png_bytep new_key), PNG_EMPTY);
 

thirdparty/libpng/pngread.c

@@ -1,8 +1,8 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.17 [March 26, 2015]
+ * 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.)
  *
@@ -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)
@@ -127,10 +127,7 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
       }
 
       else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0)
-      {
-         png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
          png_ptr->mode |= PNG_AFTER_IDAT;
-      }
 
       /* This should be a binary subdivision search or a hash for
        * matching the chunk name rather than a linear search.
@@ -252,7 +249,7 @@ 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 +276,7 @@ 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 +299,7 @@ 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 +537,7 @@ 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 +581,7 @@ 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 +716,7 @@ 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 +776,8 @@ 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
@@ -788,9 +785,6 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
       png_uint_32 length = png_read_chunk_header(png_ptr);
       png_uint_32 chunk_name = png_ptr->chunk_name;
 
-      if (chunk_name != png_IDAT)
-         png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
-
       if (chunk_name == png_IEND)
          png_handle_IEND(png_ptr, info_ptr, length);
 
@@ -805,9 +799,9 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
       {
          if (chunk_name == png_IDAT)
          {
-            if ((length > 0 && !(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
-                || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) != 0)
-               png_benign_error(png_ptr, ".Too many IDATs found");
+            if ((length > 0) ||
+                (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) != 0)
+               png_benign_error(png_ptr, "Too many IDATs found");
          }
          png_handle_unknown(png_ptr, info_ptr, length, keep);
          if (chunk_name == png_PLTE)
@@ -818,14 +812,10 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
       else if (chunk_name == png_IDAT)
       {
          /* Zero length IDATs are legal after the last IDAT has been
-          * read, but not after other chunks have been read.  1.6 does not
-          * always read all the deflate data; specifically it cannot be relied
-          * upon to read the Adler32 at the end.  If it doesn't ignore IDAT
-          * chunks which are longer than zero as well:
+          * read, but not after other chunks have been read.
           */
-         if ((length > 0 && !(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
-             || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) != 0)
-            png_benign_error(png_ptr, "..Too many IDATs found");
+         if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) != 0)
+            png_benign_error(png_ptr, "Too many IDATs found");
 
          png_crc_finish(png_ptr, length);
       }
@@ -919,7 +909,7 @@ 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 */
@@ -1030,7 +1020,8 @@ 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;
@@ -1306,7 +1297,7 @@ 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)
             {
@@ -1469,12 +1460,12 @@ 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;
 }
@@ -1507,12 +1498,12 @@ 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;
 }
@@ -1549,7 +1540,7 @@ 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)
    {
@@ -1572,12 +1563,12 @@ 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;
 }
@@ -1623,12 +1614,12 @@ 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)
@@ -1695,7 +1686,7 @@ 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
    }
 
@@ -1704,8 +1695,8 @@ 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
@@ -1741,14 +1732,14 @@ 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");
@@ -2028,7 +2019,7 @@ 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;
@@ -2052,7 +2043,7 @@ 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);
       }
    }
 
@@ -2104,7 +2095,7 @@ png_image_read_colormap(png_voidp argument)
 
       else if (display->background == NULL /* no way to remove it */)
          png_error(png_ptr,
-             "background color must be supplied to remove alpha/transparency");
+            "a 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
@@ -2199,7 +2190,7 @@ 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
@@ -2211,7 +2202,7 @@ 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. */
@@ -2276,7 +2267,7 @@ 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
@@ -2290,8 +2281,8 @@ 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;
@@ -2321,7 +2312,7 @@ 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
@@ -2389,7 +2380,7 @@ 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
@@ -2399,8 +2390,8 @@ 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;
             }
@@ -2420,7 +2411,7 @@ 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
@@ -2429,13 +2420,13 @@ 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
@@ -2473,9 +2464,9 @@ 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);
                   }
                }
 
@@ -2501,7 +2492,7 @@ 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
@@ -2577,13 +2568,13 @@ 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)
@@ -2608,8 +2599,8 @@ 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;
@@ -2643,7 +2634,7 @@ 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.
@@ -2664,7 +2655,7 @@ 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);
                      }
                   }
 
@@ -2691,7 +2682,7 @@ 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)
                   {
@@ -2713,9 +2704,9 @@ 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. */
@@ -2733,13 +2724,13 @@ 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);
                         }
                      }
 
@@ -2757,8 +2748,8 @@ 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;
                   }
@@ -2810,7 +2801,7 @@ 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
                   {
@@ -2818,22 +2809,22 @@ 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
@@ -2923,7 +2914,7 @@ 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;
@@ -3060,7 +3051,7 @@ 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;
@@ -3112,7 +3103,7 @@ 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;
@@ -3245,7 +3236,7 @@ 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;
@@ -3372,7 +3363,7 @@ 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;
@@ -3432,7 +3423,8 @@ 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;
 
@@ -3460,7 +3452,7 @@ 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;
 
@@ -3505,7 +3497,7 @@ 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;
 
@@ -3552,7 +3544,7 @@ 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.
              */
@@ -3602,7 +3594,7 @@ 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.
@@ -3651,7 +3643,7 @@ 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;
@@ -3702,7 +3694,7 @@ 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;
@@ -3761,7 +3753,7 @@ 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)
@@ -3824,8 +3816,8 @@ 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. */
@@ -3856,16 +3848,16 @@ png_image_read_direct(png_voidp argument)
             else
                filler = 255;
 
-#ifdef PNG_FORMAT_AFIRST_SUPPORTED
-            if ((format & PNG_FORMAT_FLAG_AFIRST) != 0)
-            {
-               where = PNG_FILLER_BEFORE;
-               change &= ~PNG_FORMAT_FLAG_AFIRST;
-            }
+#           ifdef PNG_FORMAT_AFIRST_SUPPORTED
+               if ((format & PNG_FORMAT_FLAG_AFIRST) != 0)
+               {
+                  where = PNG_FILLER_BEFORE;
+                  change &= ~PNG_FORMAT_FLAG_AFIRST;
+               }
 
-            else
-#endif
-            where = PNG_FILLER_AFTER;
+               else
+#           endif
+               where = PNG_FILLER_AFTER;
 
             png_set_add_alpha(png_ptr, filler, where);
          }
@@ -3973,12 +3965,12 @@ png_image_read_direct(png_voidp argument)
       if (info_ptr->bit_depth == 16)
          info_format |= PNG_FORMAT_FLAG_LINEAR;
 
-#ifdef PNG_FORMAT_BGR_SUPPORTED
-      if ((png_ptr->transformations & PNG_BGR) != 0)
-         info_format |= PNG_FORMAT_FLAG_BGR;
-#endif
+#     ifdef PNG_FORMAT_BGR_SUPPORTED
+         if ((png_ptr->transformations & PNG_BGR) != 0)
+            info_format |= PNG_FORMAT_FLAG_BGR;
+#     endif
 
-#ifdef PNG_FORMAT_AFIRST_SUPPORTED
+#     ifdef PNG_FORMAT_AFIRST_SUPPORTED
          if (do_local_background == 2)
          {
             if ((format & PNG_FORMAT_FLAG_AFIRST) != 0)
@@ -4075,117 +4067,67 @@ 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)
    {
-      /* Check for row_stride overflow.  This check is not performed on the
-       * original PNG format because it may not occur in the output PNG format
-       * and libpng deals with the issues of reading the original.
-       */
-      const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
+      png_uint_32 check;
 
-      /* 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 */
+      if (row_stride == 0)
+         row_stride = PNG_IMAGE_ROW_STRIDE(*image);
+
+      if (row_stride < 0)
+         check = -row_stride;
+
+      else
+         check = row_stride;
+
+      if (image->opaque != NULL && buffer != NULL &&
+         check >= PNG_IMAGE_ROW_STRIDE(*image))
       {
-         png_uint_32 check;
-         const png_uint_32 png_row_stride = image->width * channels;
-
-         if (row_stride == 0)
-            row_stride = (png_int_32)/*SAFE*/png_row_stride;
-
-         if (row_stride < 0)
-            check = -row_stride;
-
-         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)
+         if ((image->format & PNG_FORMAT_FLAG_COLORMAP) == 0 ||
+            (image->colormap_entries > 0 && colormap != NULL))
          {
-            /* 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.
+            int result;
+            png_image_read_control display;
+
+            memset(&display, 0, (sizeof display));
+            display.image = image;
+            display.buffer = buffer;
+            display.row_stride = row_stride;
+            display.colormap = colormap;
+            display.background = background;
+            display.local_row = NULL;
+
+            /* Choose the correct 'end' routine; for the color-map case all the
+             * setup has already been done.
              */
-            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))
-               {
-                  int result;
-                  png_image_read_control display;
-
-                  memset(&display, 0, (sizeof display));
-                  display.image = image;
-                  display.buffer = buffer;
-                  display.row_stride = row_stride;
-                  display.colormap = colormap;
-                  display.background = background;
-                  display.local_row = NULL;
-
-                  /* Choose the correct 'end' routine; for the color-map case
-                   * 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);
-
-                  else
-                     result =
-                        png_safe_execute(image,
-                            png_image_read_direct, &display);
-
-                  png_image_free(image);
-                  return result;
-               }
-
-               else
-                  return png_image_error(image,
-                      "png_image_finish_read[color-map]: no color-map");
-            }
+            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);
 
             else
-               return png_image_error(image,
-                   "png_image_finish_read: image too large");
+               result =
+                  png_safe_execute(image, png_image_read_direct, &display);
+
+            png_image_free(image);
+            return result;
          }
 
          else
             return png_image_error(image,
-                "png_image_finish_read: invalid argument");
+               "png_image_finish_read[color-map]: no color-map");
       }
 
       else
          return png_image_error(image,
-             "png_image_finish_read: row_stride too large");
+            "png_image_finish_read: invalid argument");
    }
 
    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;
 }

thirdparty/libpng/pngrio.c

@@ -1,8 +1,8 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.17 [March 26, 2015]
+ * 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.)
  *
@@ -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;

thirdparty/libpng/pngrtran.c

@@ -1,8 +1,8 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.19 [November 12, 2015]
+ * 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.)
  *
@@ -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");
@@ -159,7 +159,7 @@ png_set_background(png_structrp png_ptr,
    png_set_background_fixed(png_ptr, background_color, background_gamma_code,
       need_expand, png_fixed(png_ptr, background_gamma, "png_set_background"));
 }
-#  endif /* FLOATING_POINT */
+#  endif  /* FLOATING_POINT */
 #endif /* READ_BACKGROUND */
 
 /* Scale 16-bit depth files to 8-bit depth.  If both of these are set then the
@@ -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;
@@ -289,12 +289,9 @@ png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
     * is expected to be 1 or greater, but this range test allows for some
     * viewing correction values.  The intent is to weed out users of this API
     * who use the inverse of the gamma value accidentally!  Since some of these
-    * values are reasonable this may have to be changed:
-    *
-    * 1.6.x: changed from 0.07..3 to 0.01..100 (to accomodate the optimal 16-bit
-    * gamma of 36, and its reciprocal.)
+    * values are reasonable this may have to be changed.
     */
-   if (output_gamma < 1000 || output_gamma > 10000000)
+   if (output_gamma < 70000 || output_gamma > 300000)
       png_error(png_ptr, "output gamma out of expected range");
 
    /* The default file gamma is the inverse of the output gamma; the output
@@ -377,7 +374,7 @@ 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 +385,7 @@ 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 +799,7 @@ 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 +841,7 @@ 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 +987,7 @@ 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 +1014,7 @@ 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 +1023,7 @@ 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 +1040,10 @@ 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 +1300,7 @@ 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 +1581,7 @@ 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 +1617,13 @@ 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 +1651,11 @@ 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 +1726,7 @@ 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:
@@ -1915,7 +1912,7 @@ png_init_read_transformations(png_structrp png_ptr)
             png_ptr->palette[i].blue = (png_byte)component;
          }
    }
-#endif /* READ_SHIFT */
+#endif  /* READ_SHIFT */
 }
 
 /* Modify the info structure to reflect the transformations.  The
@@ -4195,7 +4192,7 @@ 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 +4499,7 @@ 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 +4759,7 @@ 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

thirdparty/libpng/pngrutil.c

@@ -1,8 +1,8 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.6.25 [September 1, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.20 [December 3, 2014]
+ * 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.)
  *
@@ -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.
@@ -461,7 +461,6 @@ png_zlib_inflate(png_structrp png_ptr, int flush)
 #endif /* Zlib >= 1.2.4 */
 
 #ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED
-#if defined(PNG_READ_zTXt_SUPPORTED) || defined (PNG_READ_iTXt_SUPPORTED)
 /* png_inflate now returns zlib error codes including Z_OK and Z_STREAM_END to
  * allow the caller to do multiple calls if required.  If the 'finish' flag is
  * set Z_FINISH will be passed to the final inflate() call and Z_STREAM_END must
@@ -600,9 +599,9 @@ 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.
     *
@@ -639,8 +638,8 @@ 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)
          {
@@ -660,15 +659,15 @@ 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)
                   {
@@ -755,7 +754,6 @@ 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
@@ -764,8 +762,8 @@ 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)
    {
@@ -804,8 +802,8 @@ 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));
 
@@ -1294,7 +1292,7 @@ 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
@@ -1434,8 +1432,8 @@ 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)
                {
@@ -1445,14 +1443,14 @@ 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
@@ -1460,20 +1458,20 @@ 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!
@@ -1481,22 +1479,22 @@ 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: */
@@ -1508,34 +1506,34 @@ 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;
 
-# if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0
+#                                   ifdef PNG_sRGB_SUPPORTED
                                     /* 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;
@@ -2272,7 +2270,7 @@ 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);
 }
@@ -2315,7 +2313,7 @@ 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*/);
 
@@ -2367,7 +2365,7 @@ 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
@@ -2467,8 +2465,8 @@ 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);
@@ -2575,7 +2573,7 @@ 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;
 
@@ -2715,7 +2713,7 @@ 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
@@ -2795,7 +2793,7 @@ 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));
       }
    }
 
@@ -2820,7 +2818,7 @@ 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 */
 
@@ -2858,7 +2856,7 @@ 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.
@@ -2892,9 +2890,9 @@ 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;
@@ -2987,7 +2985,7 @@ 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;
@@ -3420,8 +3418,8 @@ 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) &&
-                      png_isaligned(sp, png_uint_32) &&
+                  if (png_isaligned(dp, png_uint_32) != 0 &&
+                      png_isaligned(sp, png_uint_32) != 0 &&
                       bytes_to_copy % (sizeof (png_uint_32)) == 0 &&
                       bytes_to_jump % (sizeof (png_uint_32)) == 0)
                   {
@@ -3541,7 +3539,7 @@ 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 */
@@ -3785,7 +3783,7 @@ 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;
@@ -3803,7 +3801,7 @@ 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;
@@ -3819,7 +3817,7 @@ 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;
@@ -3846,7 +3844,7 @@ 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;
@@ -3894,7 +3892,7 @@ 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;
@@ -3979,7 +3977,7 @@ 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
@@ -3997,7 +3995,7 @@ 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;
@@ -4449,42 +4447,42 @@ 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

thirdparty/libpng/pngset.c

@@ -1,8 +1,8 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.21 [January 15, 2016]
+ * Copyright (c) 1998-2015 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
@@ -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;
       }
@@ -952,14 +952,12 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
 
        png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
 
+       /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
+       png_ptr->trans_alpha = info_ptr->trans_alpha = png_voidcast(png_bytep,
+         png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
+
        if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
-       {
-         /* 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));
           memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
-       }
-       png_ptr->trans_alpha = info_ptr->trans_alpha;
    }
 
    if (trans_color != NULL)
@@ -976,7 +974,7 @@ 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 +1016,8 @@ 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 +1078,7 @@ 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 +1108,10 @@ 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 +1134,7 @@ 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 +1173,13 @@ 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 +1208,12 @@ 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 +1420,7 @@ 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 +1500,60 @@ 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->zowner != 0)
+      if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0)
       {
-         png_warning(png_ptr,
-             "Compression buffer size cannot be changed because it is in use");
+         if (png_ptr->zowner != 0)
+         {
+            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;
-      }
+            return;
+         }
 
-      if (png_ptr->zbuffer_size != size)
-      {
-         png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
-         png_ptr->zbuffer_size = (uInt)size;
+         if (png_ptr->zbuffer_size != size)
+         {
+            png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
+            png_ptr->zbuffer_size = (uInt)size;
+         }
       }
-   }
 #  endif
 }
 
@@ -1662,9 +1660,7 @@ 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;
@@ -1727,9 +1723,7 @@ 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'");
    }
-#else /* !WARNINGS */
-   PNG_UNUSED(png_ptr)
-#endif /* !WARNINGS */
+#endif /* WARNINGS */
 
    return key_len;
 }

thirdparty/libpng/pngstruct.h

@@ -1,8 +1,8 @@
 
 /* pngstruct.h - header file for PNG reference library
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.18 [July 23, 2015]
+ * 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.)
  *
@@ -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_ in png.h ) */
+   png_byte do_filter;        /* row filter flags (see PNG_FILTER_ below ) */
    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 */

thirdparty/libpng/pngtrans.c

@@ -1,8 +1,8 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.18 [July 23, 2015]
+ * 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.)
  *
@@ -172,14 +172,13 @@ 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
@@ -798,7 +797,7 @@ 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

thirdparty/libpng/pngwio.c

@@ -1,8 +1,8 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.15 [November 20, 2014]
+ * Copyright (c) 1998-2002,2004,2006-2014 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");

thirdparty/libpng/pngwrite.c

@@ -1,8 +1,8 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.19 [November 12, 2015]
+ * 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.)
  *
@@ -12,9 +12,9 @@
  */
 
 #include "pngpriv.h"
-#ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED
+#if defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
 #  include <errno.h>
-#endif /* SIMPLIFIED_WRITE_STDIO */
+#endif
 
 #ifdef PNG_WRITE_SUPPORTED
 
@@ -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;
@@ -1452,6 +1452,7 @@ png_write_png(png_structrp png_ptr, png_inforp info_ptr,
 
 
 #ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
+# ifdef PNG_STDIO_SUPPORTED /* currently required for png_image_write_* */
 /* Initialize the write structure - general purpose utility. */
 static int
 png_image_write_init(png_imagep image)
@@ -1503,10 +1504,6 @@ typedef struct
    png_const_voidp first_row;
    ptrdiff_t       row_bytes;
    png_voidp       local_row;
-   /* Byte count for memory writing */
-   png_bytep        memory;
-   png_alloc_size_t memory_bytes; /* not used for STDIO */
-   png_alloc_size_t output_bytes; /* running total */
 } png_image_write_control;
 
 /* Write png_uint_16 input to a 16-bit PNG; the png_ptr has already been set to
@@ -1628,7 +1625,7 @@ 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 +1845,16 @@ 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 +1901,11 @@ 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 +1914,7 @@ 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;
@@ -1934,43 +1931,9 @@ png_image_write_main(png_voidp argument)
       png_set_benign_errors(png_ptr, 0/*error*/);
 #   endif
 
-   /* Default the 'row_stride' parameter if required, also check the row stride
-    * and total image size to ensure that they are within the system limits.
-    */
-   {
-      const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format);
-
-      if (image->width <= 0x7FFFFFFFU/channels) /* no overflow */
-      {
-         png_uint_32 check;
-         const png_uint_32 png_row_stride = image->width * channels;
-
-         if (display->row_stride == 0)
-            display->row_stride = (png_int_32)/*SAFE*/png_row_stride;
-
-         if (display->row_stride < 0)
-            check = -display->row_stride;
-
-         else
-            check = display->row_stride;
-
-         if (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.
-             */
-            if (image->height > 0xFFFFFFFF/png_row_stride)
-               png_error(image->opaque->png_ptr, "memory image too large");
-         }
-
-         else
-            png_error(image->opaque->png_ptr, "supplied row stride too small");
-      }
-
-      else
-         png_error(image->opaque->png_ptr, "image row stride too large");
-   }
+   /* Default the 'row_stride' parameter if required. */
+   if (display->row_stride == 0)
+      display->row_stride = PNG_IMAGE_ROW_STRIDE(*image);
 
    /* Set the required transforms then write the rows in the correct order. */
    if ((format & PNG_FORMAT_FLAG_COLORMAP) != 0)
@@ -1980,24 +1943,24 @@ 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 +1975,11 @@ 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 +2073,7 @@ 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;
@@ -2147,130 +2110,14 @@ png_image_write_main(png_voidp argument)
    return 1;
 }
 
-
-static void (PNGCBAPI
-image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data,
-    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)*/);
-   const png_alloc_size_t ob = display->output_bytes;
-
-   /* Check for overflow; this should never happen: */
-   if (size <= ((png_alloc_size_t)-1) - ob)
-   {
-      /* I don't think libpng ever does this, but just in case: */
-      if (size > 0)
-      {
-         if (display->memory_bytes >= ob+size) /* writing */
-            memcpy(display->memory+ob, data, size);
-
-         /* Always update the size: */
-         display->output_bytes = ob+size;
-      }
-   }
-
-   else
-      png_error(png_ptr, "png_image_write_to_memory: PNG too big");
-}
-
-static void (PNGCBAPI
-image_memory_flush)(png_structp png_ptr)
-{
-   PNG_UNUSED(png_ptr)
-}
-
-static int
-png_image_write_memory(png_voidp argument)
-{
-   png_image_write_control *display = png_voidcast(png_image_write_control*,
-       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);
-
-   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)
-{
-   /* Write the image to the given buffer, or count the bytes if it is NULL */
-   if (image != NULL && image->version == PNG_IMAGE_VERSION)
-   {
-      if (memory_bytes != NULL && buffer != NULL)
-      {
-         /* This is to give the caller an easier error detection in the NULL
-          * case and guard against uninitialized variable problems:
-          */
-         if (memory == NULL)
-            *memory_bytes = 0;
-
-         if (png_image_write_init(image) != 0)
-         {
-            png_image_write_control display;
-            int result;
-
-            memset(&display, 0, (sizeof display));
-            display.image = image;
-            display.buffer = buffer;
-            display.row_stride = row_stride;
-            display.colormap = colormap;
-            display.convert_to_8bit = convert_to_8bit;
-            display.memory = png_voidcast(png_bytep, memory);
-            display.memory_bytes = *memory_bytes;
-            display.output_bytes = 0;
-
-            result = png_safe_execute(image, png_image_write_memory, &display);
-            png_image_free(image);
-
-            /* write_memory returns true even if we ran out of buffer. */
-            if (result)
-            {
-               /* On out-of-buffer this function returns '0' but still updates
-                * memory_bytes:
-                */
-               if (memory != NULL && display.output_bytes > *memory_bytes)
-                  result = 0;
-
-               *memory_bytes = display.output_bytes;
-            }
-
-            return result;
-         }
-
-         else
-            return 0;
-      }
-
-      else
-         return png_image_error(image,
-             "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");
-
-   else
-      return 0;
-}
-
-#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)
    {
-      if (file != NULL && buffer != NULL)
+      if (file != NULL)
       {
          if (png_image_write_init(image) != 0)
          {
@@ -2301,12 +2148,12 @@ 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;
@@ -2314,20 +2161,20 @@ 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)
    {
-      if (file_name != NULL && buffer != NULL)
+      if (file_name != NULL)
       {
          FILE *fp = fopen(file_name, "wb");
 
          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 */
 
@@ -2368,16 +2215,16 @@ 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;
 }
-#endif /* SIMPLIFIED_WRITE_STDIO */
+# endif /* STDIO */
 #endif /* SIMPLIFIED_WRITE */
 #endif /* WRITE */

thirdparty/libpng/pngwtran.c

@@ -1,8 +1,8 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.18 [July 23, 2015]
+ * 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.)
  *
@@ -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

thirdparty/libpng/pngwutil.c

@@ -1,8 +1,8 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.6.24 [August 4, 2016]
- * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.21 [January 15, 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.)
  *
@@ -23,10 +23,10 @@
 void PNGAPI
 png_save_uint_32(png_bytep buf, png_uint_32 i)
 {
-   buf[0] = (png_byte)((i >> 24) & 0xffU);
-   buf[1] = (png_byte)((i >> 16) & 0xffU);
-   buf[2] = (png_byte)((i >>  8) & 0xffU);
-   buf[3] = (png_byte)( i        & 0xffU);
+   buf[0] = (png_byte)(i >> 24);
+   buf[1] = (png_byte)(i >> 16);
+   buf[2] = (png_byte)(i >> 8);
+   buf[3] = (png_byte)(i     );
 }
 
 /* Place a 16-bit number into a buffer in PNG byte order.
@@ -36,8 +36,8 @@ png_save_uint_32(png_bytep buf, png_uint_32 i)
 void PNGAPI
 png_save_uint_16(png_bytep buf, unsigned int i)
 {
-   buf[0] = (png_byte)((i >> 8) & 0xffU);
-   buf[1] = (png_byte)( i       & 0xffU);
+   buf[0] = (png_byte)(i >> 8);
+   buf[1] = (png_byte)(i     );
 }
 #endif
 
@@ -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;
       }
 
@@ -1441,8 +1441,7 @@ 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;
       }
@@ -1572,7 +1571,7 @@ 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);
@@ -1942,7 +1941,7 @@ 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
@@ -2245,7 +2244,7 @@ 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 */
@@ -2263,22 +2262,14 @@ 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;
@@ -2287,28 +2278,6 @@ 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)
@@ -2325,11 +2294,7 @@ 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;
@@ -2337,25 +2302,10 @@ 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;
@@ -2365,15 +2315,11 @@ 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++)
@@ -2381,11 +2327,7 @@ 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;
@@ -2393,27 +2335,6 @@ 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,
@@ -2431,11 +2352,7 @@ 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;
@@ -2464,11 +2381,7 @@ 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;
@@ -2476,48 +2389,6 @@ 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 */
@@ -2526,7 +2397,7 @@ 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
-   unsigned int filter_to_do = png_ptr->do_filter;
+   png_byte filter_to_do = png_ptr->do_filter;
    png_bytep row_buf;
    png_bytep best_row;
    png_uint_32 bpp;
@@ -2572,33 +2443,32 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
     */
    best_row = png_ptr->row_buf;
 
-   if (PNG_SIZE_MAX/128 <= row_bytes)
+
+   if ((filter_to_do & PNG_FILTER_NONE) != 0 && filter_to_do != PNG_FILTER_NONE)
    {
-      /* 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
          }
       }
 
@@ -2609,7 +2479,7 @@ 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 */
    {
-      png_setup_sub_row_only(png_ptr, bpp, row_bytes);
+      (void) png_setup_sub_row(png_ptr, bpp, row_bytes, mins);
       best_row = png_ptr->try_row;
    }
 
@@ -2635,7 +2505,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
    /* Up filter */
    if (filter_to_do == PNG_FILTER_UP)
    {
-      png_setup_up_row_only(png_ptr, row_bytes);
+      (void) png_setup_up_row(png_ptr, row_bytes, mins);
       best_row = png_ptr->try_row;
    }
 
@@ -2661,7 +2531,7 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
    /* Avg filter */
    if (filter_to_do == PNG_FILTER_AVG)
    {
-      png_setup_avg_row_only(png_ptr, bpp, row_bytes);
+      (void) png_setup_avg_row(png_ptr, bpp, row_bytes, mins);
       best_row = png_ptr->try_row;
    }
 
@@ -2685,9 +2555,9 @@ png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
    }
 
    /* Paeth filter */
-   if (filter_to_do == PNG_FILTER_PAETH)
+   if ((filter_to_do == PNG_FILTER_PAETH) != 0)
    {
-      png_setup_paeth_row_only(png_ptr, bpp, row_bytes);
+      (void) png_setup_paeth_row(png_ptr, bpp, row_bytes, mins);
       best_row = png_ptr->try_row;
    }
 
@@ -2719,7 +2589,7 @@ 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");
 

tools/abi-tracker/compat_report/2.1_to_current/compat_report.html

@@ -0,0 +1,453 @@
+<!-- kind:binary;verdict:compatible;affected:0;added:0;removed:0;type_problems_high:0;type_problems_medium:0;type_problems_low:0;interface_problems_high:0;interface_problems_medium:0;interface_problems_low:0;changed_constants:0;tool_version:1.99.15 -->
+<!-- kind:source;verdict:compatible;affected:0;added:0;removed:0;type_problems_high:0;type_problems_medium:0;type_problems_low:0;interface_problems_high:0;interface_problems_medium:0;interface_problems_low:0;changed_constants:0;tool_version:1.99.15 -->
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+    <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <meta name="keywords" content="openjpeg, compatibility, API, ABI, report" />
+    <meta name="description" content="API/ABI compatibility report for the openjpeg object between 2.1 and current versions" />
+    <title>
+        openjpeg: 2.1 to current compatibility report
+    </title>
+    <style type="text/css">
+    body {
+    font-family:Arial, sans-serif;
+    background-color:White;
+    color:Black;
+}
+hr {
+    color:Black;
+    background-color:Black;
+    height:1px;
+    border:0;
+}
+h1 {
+    margin-bottom:0px;
+    padding-bottom:0px;
+    font-size:1.625em;
+}
+h2 {
+    margin-bottom:0px;
+    padding-bottom:0px;
+    font-size:1.25em;
+    white-space:nowrap;
+}
+span.section {
+    font-weight:bold;
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+    </head><body><a name='Source'></a><a name='Binary'></a><a name='Top'></a><h1>API compatibility report for the <span style='color:Blue;'>libopenjp2.so</span> object between <span style='color:Red;'>2.1</span> and <span style='color:Red;'>current</span> versions on <span style='color:Blue;'>x86_64</span></h1>
+
+            <br/>
+            <div class='tabset'>
+            <a id='BinaryID' href='#BinaryTab' class='tab active'>Binary<br/>Compatibility</a>
+            <a id='SourceID' href='#SourceTab' style='margin-left:3px' class='tab disabled'>Source<br/>Compatibility</a>
+            </div><div id='BinaryTab' class='tab'>
+<h2>Test Info</h2><hr/>
+<table class='summary'>
+<tr><th>Module Name</th><td>openjpeg</td></tr>
+<tr><th>Version #1</th><td>2.1</td></tr>
+<tr><th>Version #2</th><td>current</td></tr>
+<tr><th>CPU Type</th><td>x86_64</td></tr>
+<tr><th>GCC Version</th><td>4.9.2</td></tr>
+<tr><th>Subject</th><td width='150px'>Binary Compatibility</td></tr>
+</table>
+<h2>Test Results</h2><hr/>
+<table class='summary'><tr><th>Total Header Files</th><td><a href='#Headers' style='color:Blue;'>1</a></td></tr>
+<tr><th>Total Source Files</th><td><a href='#Sources' style='color:Blue;'>3</a></td></tr>
+<tr><th>Total Objects</th><td><a href='#Libs' style='color:Blue;'>1</a></td></tr>
+<tr><th>Total Symbols / Types</th><td>43 / 110</td></tr>
+<tr><th>Verdict</th><td><span style='color:Green;'><b>Compatible</b></span></td></tr>
+</table>
+<h2>Problem Summary</h2><hr/>
+<table class='summary'><tr><th></th><th style='text-align:center;'>Severity</th><th style='text-align:center;'>Count</th></tr><tr><th>Added Symbols</th><td>-</td><td>0</td></tr>
+<tr><th>Removed Symbols</th><td>High</td><td>0</td></tr>
+<tr><th rowspan='3'>Problems with<br/>Data Types</th><td>High</td><td>0</td></tr>
+<tr><td>Medium</td><td>0</td></tr>
+<tr><td>Low</td><td>0</td></tr>
+<tr><th rowspan='3'>Problems with<br/>Symbols</th><td>High</td><td>0</td></tr>
+<tr><td>Medium</td><td>0</td></tr>
+<tr><td>Low</td><td>0</td></tr>
+<tr><th>Problems with<br/>Constants</th><td>Low</td><td>0</td></tr>
+</table>
+
+<a name='Headers'></a><h2>Header Files (1)</h2><hr/>
+<div class='h_list'>
+openjpeg.h<br/>
+</div>
+<br/><a class='top_ref' href='#Top'>to the top</a><br/>
+<a name='Sources'></a><h2>Source Files (3)</h2><hr/>
+<div class='h_list'>
+cio.c<br/>
+image.c<br/>
+openjpeg.c<br/>
+</div>
+<br/><a class='top_ref' href='#Top'>to the top</a><br/>
+<a name='Libs'></a><h2>Objects (1)</h2><hr/>
+<div class='lib_list'>
+libopenjp2.so.2.1.0<br/>
+</div>
+<br/><a class='top_ref' href='#Top'>to the top</a><br/>
+<br/><br/><br/></div><div id='SourceTab' class='tab'>
+<h2>Test Info</h2><hr/>
+<table class='summary'>
+<tr><th>Module Name</th><td>openjpeg</td></tr>
+<tr><th>Version #1</th><td>2.1</td></tr>
+<tr><th>Version #2</th><td>current</td></tr>
+<tr><th>CPU Type</th><td>x86_64</td></tr>
+<tr><th>GCC Version</th><td>4.9.2</td></tr>
+<tr><th>Subject</th><td width='150px'>Source Compatibility</td></tr>
+</table>
+<h2>Test Results</h2><hr/>
+<table class='summary'><tr><th>Total Header Files</th><td><a href='#Headers' style='color:Blue;'>1</a></td></tr>
+<tr><th>Total Source Files</th><td><a href='#Sources' style='color:Blue;'>3</a></td></tr>
+<tr><th>Total Objects</th><td><a href='#Libs' style='color:Blue;'>1</a></td></tr>
+<tr><th>Total Symbols / Types</th><td>43 / 110</td></tr>
+<tr><th>Verdict</th><td><span style='color:Green;'><b>Compatible</b></span></td></tr>
+</table>
+<h2>Problem Summary</h2><hr/>
+<table class='summary'><tr><th></th><th style='text-align:center;'>Severity</th><th style='text-align:center;'>Count</th></tr><tr><th>Added Symbols</th><td>-</td><td>0</td></tr>
+<tr><th>Removed Symbols</th><td>High</td><td>0</td></tr>
+<tr><th rowspan='3'>Problems with<br/>Data Types</th><td>High</td><td>0</td></tr>
+<tr><td>Medium</td><td>0</td></tr>
+<tr><td>Low</td><td>0</td></tr>
+<tr><th rowspan='3'>Problems with<br/>Symbols</th><td>High</td><td>0</td></tr>
+<tr><td>Medium</td><td>0</td></tr>
+<tr><td>Low</td><td>0</td></tr>
+<tr><th>Problems with<br/>Constants</th><td>Low</td><td>0</td></tr>
+</table>
+
+<a name='Headers'></a><h2>Header Files (1)</h2><hr/>
+<div class='h_list'>
+openjpeg.h<br/>
+</div>
+<br/><a class='top_ref' href='#Top'>to the top</a><br/>
+<a name='Sources'></a><h2>Source Files (3)</h2><hr/>
+<div class='h_list'>
+cio.c<br/>
+image.c<br/>
+openjpeg.c<br/>
+</div>
+<br/><a class='top_ref' href='#Top'>to the top</a><br/>
+<a name='Libs'></a><h2>Objects (1)</h2><hr/>
+<div class='lib_list'>
+libopenjp2.so.2.1.0<br/>
+</div>
+<br/><a class='top_ref' href='#Top'>to the top</a><br/>
+<br/><br/><br/></div><hr/><div class='footer' align='right'><i>Generated on Mon Jan 25 14:47:00 2016 by <a href='http://lvc.github.io/abi-compliance-checker/'>ABI Compliance Checker</a> 1.99.15 &#160;</i></div><br/>
+
+</body></html>