The Independent JPEG Group's JPEG software v9c

.gitattributes

@@ -1,5 +0,0 @@
-/.travis.yml export-ignore
-/appveyor.yml export-ignore
-/ci export-ignore
-/.gitattributes export-ignore
-/.github export-ignore

.github/CONTRIBUTING.md

@@ -1,95 +0,0 @@
-Contributing to libjpeg-turbo
-=============================
-
-libjpeg-turbo is a stable and mature product with a worldwide reach, it is an
-ISO/ITU-T reference implementation of the JPEG standard, and its maintainer
-does not earn a salary for maintaining it.  Thus, not every code contribution
-can or will be accepted into the libjpeg-turbo code base.  In order to maximize
-the chances that a code contribution is acceptable, please adhere to the
-following guidelines:
-
-1. If the code contribution is a bug fix, then please ensure that enough
-information is provided so that the maintainer can readily reproduce and
-document the bug.  That information should include:
-    - A clear and concise description of the bug
-    - The steps and (if applicable) images necessary to reproduce the bug
-    - The compilers, operating systems, and CPUs with which the bug was
-      observed
-    - The versions of libjpeg-turbo with which the bug was observed
-    - If the bug is a regression, the specific commit that introduced the bug
-      (use `git bisect` to determine this)
-
-2. If the code contribution will implement a major new feature, then please
-contact the project maintainer (through a
-[GitHub issue](https://github.com/libjpeg-turbo/libjpeg-turbo/issues/new),
-[direct e-mail](https://libjpeg-turbo.org/About/Contact), or the
-[libjpeg-turbo-devel mailing list](https://libjpeg-turbo.org/About/MailingLists))
-prior to implementing the feature.  In general, major new features that are
-potentially disruptive to the quality of libjpeg-turbo are unlikely to be
-accepted unless:
-    - The new feature is within the existing scope of libjpeg-turbo.
-    - The new feature has been thoroughly regression tested and benchmarked on
-      all of the supported platforms that are potentially affected by it.
-    - The new feature has been documented clearly and concisely in the change
-      log and (if applicable) the libjpeg and TurboJPEG API documentation and
-      man pages.
-    - The code implementing the new feature is formatted consistently with the
-      rest of the libjpeg-turbo code base (use
-      [checkstyle](https://github.com/libjpeg-turbo/checkstyle) to validate
-      this.)
-    - The new feature does not introduce new members into the exposed libjpeg
-      API structures (doing so would break backward ABI compatibility.)
-    - The new feature does not alter existing libjpeg-turbo usage or
-      development workflows.
-    - The code implementing the new feature is elegant, easily maintainable,
-      and causes the least possible amount of disruption to the libjpeg-turbo
-      code base.
-    - The new feature is based on the dev branch of the libjpeg-turbo
-      repository.
-
-    ... OR ...
-
-    - Your organization is prepared to pay for the labor necessary to ensure
-      all of the above.  Even the most well-written patches can still require
-      a significant amount of labor to clean up, test, and integrate.  (See
-      above RE: the maintainer not earning a salary.)
-
-    Specific types of features that *will not* be accepted:
-
-    - Features that extend the scope of libjpeg-turbo to support image formats
-      other than DCT-based JPEG and JFIF
-    - Features that extend the scope of libjpeg-turbo to support image
-      processing algorithms that are not necessary for JPEG compression or
-      decompression
-    - Extensions to the JPEG format that have not been approved by the
-      appropriate standards bodies
-    - Non-trivial performance enhancements that have less than a 5% overall
-      impact on performance
-
-3. If the code contribution is a build system enhancement, then please be
-prepared to justify the enhancement.  In general, build system enhancements
-are unlikely to be accepted unless:
-    - The enhancement is potentially beneficial to a significant number of
-      upstream libjpeg-turbo users/developers.  (If the enhancement is only
-      beneficial to a downstream project, then it does not belong here.)
-    - The enhancement has been tested with the following CMake versions:
-        - The earliest version of CMake that libjpeg-turbo currently supports
-          (refer to CMakeLists.txt)
-        - The most recent major version of CMake
-        - (if applicable) The earliest version of CMake with which the
-          enhancement can be used
-    - The enhancement has been tested on all of the major platforms (Mac,
-      Linux, Windows/Visual C++, Windows/MinGW) that are potentially affected
-      by it.
-    - The enhancement does not introduce new build system requirements or CMake
-      variables unless absolutely necessary.
-    - The enhancement does not alter existing libjpeg-turbo development
-      workflows.
-
-    Specific types of build system enhancements that *will not* be accepted:
-
-    - Enhancements that allow libjpeg-turbo to be built from a subdirectory
-      of a downstream repository.  These enhancements are not maintainable in
-      the upstream libjpeg-turbo build system.  Use the CMake
-      `ExternalProject_Add()` function instead.
-    - Enhancements that introduce new (non-CMake-based) build systems

.github/ISSUE_TEMPLATE/bug-report.md

@@ -1,40 +0,0 @@
----
-name: Bug Report
-about: Inform the libjpeg-turbo maintainer about unexpected, reproducible behavior
-title: ''
-labels: bug
-assignees: dcommander
-
----
-
-**Have you searched the existing issues (both open and closed) in the libjpeg-turbo issue tracker to ensure that this bug report is not a duplicate?**
-
-
-**Does this bug report describe one of the [two known and unsolvable issues with the JPEG format](https://libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf)?**
-
-
-**Clear and concise description of the bug:**
-
-
-**Steps to reproduce the bug (using *only* libjpeg-turbo):**
-
-
-**Image(s) needed in order to reproduce the bug (if applicable):**
-
-
-**Expected behavior:**
-
-
-**Observed behavior:**
-
-
-**Platform(s) (compiler version, operating system version, CPU) on which the bug was observed:**
-
-
-**libjpeg-turbo release(s), commit(s), or branch(es) in which the bug was observed (always test the tip of the master branch or the latest [stable pre-release](https://libjpeg-turbo.org/DeveloperInfo/PreReleases) to verify that the bug hasn't already been fixed):**
-
-
-**If the bug is a regression, the specific commit that introduced the regression (use `git bisect` to determine this):**
-
-
-**Additional information:**

.github/ISSUE_TEMPLATE/feature-request.md

@@ -1,8 +0,0 @@
----
-name: Feature Request
-about: Suggest new libjpeg-turbo functionality
-title: ''
-labels: enhancement
-assignees: dcommander
-
----

.travis.yml

@@ -1,156 +0,0 @@
-language: c
-
-branches:
-  except:
-    - /^[0-9]+\.[0-9]+\.[0-9]+/
-    - /^jpeg-.*/
-
-matrix:
-  include:
-    - os: linux
-      env: BUILD_OFFICIAL=1
-      sudo: required
-      services:
-        - docker
-    - os: osx
-      env: BUILD_OFFICIAL=1
-      osx_image: xcode8.3
-    - os: linux
-      compiler: clang
-      env:
-        CMAKE_BUILD_TYPE=RelWithDebInfo
-        CFLAGS_RELWITHDEBINFO="-O1 -g -fsanitize=address,undefined -fno-omit-frame-pointer"
-        CMAKE_FLAGS="-DENABLE_SHARED=0"
-        ASAN_OPTIONS="detect_leaks=1 symbolize=1"
-        CTEST_OUTPUT_ON_FAILURE=1
-      addons:
-        apt:
-          packages:
-            - nasm
-    - os: linux
-      compiler: gcc
-      env:
-        CMAKE_FLAGS="-DWITH_12BIT=1"
-        CTEST_OUTPUT_ON_FAILURE=1
-    - os: linux
-      compiler: gcc
-      env:
-        CMAKE_FLAGS="-DWITH_JPEG7=1"
-        CTEST_OUTPUT_ON_FAILURE=1
-      addons:
-        apt:
-          packages:
-            - nasm
-    - os: linux
-      compiler: gcc
-      env:
-        CMAKE_FLAGS="-DWITH_JPEG8=1"
-        CTEST_OUTPUT_ON_FAILURE=1
-      addons:
-        apt:
-          packages:
-            - nasm
-    - os: linux
-      compiler: clang
-      env:
-        CMAKE_BUILD_TYPE=RelWithDebInfo
-        CFLAGS_RELWITHDEBINFO="-O3 -g -fsanitize=memory -fPIE"
-        CMAKE_FLAGS="-DWITH_SIMD=0"
-        CTEST_OUTPUT_ON_FAILURE=1
-
-addons:
-  homebrew:
-    brewfile: true
-    update: true
-
-cache:
-  directories:
-    - $HOME/Library/Caches/Homebrew
-
-before_cache:
-  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then brew cleanup; fi
-
-before_install:
-  - if [ "$TRAVIS_OS_NAME" = "osx" ]; then
-      git clone --depth=1 https://github.com/libjpeg-turbo/gas-preprocessor.git ~/src/gas-preprocessor &&
-      ln -fs /Applications/Xcode.app /Applications/Xcode72.app;
-    fi
-  - if [ "${BUILD_OFFICIAL:-}" != "" ]; then
-      if [ "$TRAVIS_OS_NAME" = "linux" ]; then
-        docker pull dcommander/buildljt;
-      fi &&
-      git clone --depth=1 https://github.com/libjpeg-turbo/buildscripts.git -b $TRAVIS_BRANCH ~/src/buildscripts &&
-      if [ -n "$encrypted_f92e8533f6f1_iv" ]; then
-        openssl aes-256-cbc -K $encrypted_f92e8533f6f1_key -iv $encrypted_f92e8533f6f1_iv -in ci/keys.enc -out ci/keys -d &&
-        tar xf ci/keys &&
-        rm ci/keys &&
-        mv ci/gpgsign ~/src/buildscripts &&
-        gpg --batch --import ci/sign_ljt &&
-        rm ci/sign_ljt;
-      fi
-    fi
-
-script:
-  - if [ "${BUILD_OFFICIAL:-}" != "" ]; then
-      mkdir -p ~/src/ljt.nightly &&
-      if [ "$TRAVIS_OS_NAME" = "linux" ]; then
-        mkdir $HOME/rpmkeys &&
-        wget --no-check-certificate "http://www.libjpeg-turbo.org/key/LJTPR-GPG-KEY" -O $HOME/rpmkeys/LJTPR-GPG-KEY &&
-        docker run -v $HOME/src/ljt.nightly:/root/src/ljt.nightly -v $HOME/src/buildscripts:/root/src/buildscripts -v $TRAVIS_BUILD_DIR:/root/src/libjpeg-turbo -v $HOME/.gnupg:/root/.gnupg -v $HOME/rpmkeys:/rpmkeys -t dcommander/buildljt:latest bash -c "rpm --import /rpmkeys/LJTPR-GPG-KEY && ~/src/buildscripts/buildljt -d /root/src/libjpeg-turbo -v" &&
-        sudo chown -R travis:travis ~/src/ljt.nightly &&
-        mv ~/src/ljt.nightly/latest/log-$TRAVIS_OS_NAME.txt ~/src/ljt.nightly/latest/files/;
-      else
-        PATH=$PATH:~/src/gas-preprocessor ~/src/buildscripts/buildljt -d $TRAVIS_BUILD_DIR -v &&
-        mv ~/src/ljt.nightly/latest/log-$TRAVIS_OS_NAME.txt ~/src/ljt.nightly/latest/files/;
-      fi
-    fi
-  - if [ "${BUILD_OFFICIAL:-}" == "" ]; then
-      mkdir build &&
-      pushd build &&
-      cmake -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=$CMAKE_BUILD_TYPE "-DCMAKE_C_FLAGS_RELWITHDEBINFO=$CFLAGS_RELWITHDEBINFO" $CMAKE_FLAGS .. &&
-      export NUMCPUS=`grep -c '^processor' /proc/cpuinfo` &&
-      make -j$NUMCPUS --load-average=$NUMCPUS &&
-      make test &&
-      if [[ ! "${CMAKE_FLAGS[0]}" =~ "WITH_12BIT" &&
-            ! "${CMAKE_FLAGS[0]}" =~ "WITH_SIMD" ]]; then
-        JSIMD_FORCESSE2=1 make test &&
-        cmake -DFLOATTEST=32bit .. &&
-        JSIMD_FORCENONE=1 make test;
-      fi &&
-      popd;
-    fi
-
-after_failure:
-  - if [ "${BUILD_OFFICIAL:-}" == "" ]; then
-      if [ -f $TRAVIS_BUILD_DIR/build/config.log ]; then
-        cat $TRAVIS_BUILD_DIR/build/config.log;
-      fi
-    fi
-
-deploy:
-  - provider: s3
-    bucket: libjpeg-turbo-pr
-    access_key_id:
-      secure: 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
-    secret_access_key:
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-    acl: public_read
-    local-dir: $HOME/src/ljt.nightly/latest/files
-    upload-dir: $TRAVIS_BRANCH/$TRAVIS_OS_NAME
-    on:
-      repo: libjpeg-turbo/libjpeg-turbo
-      branch: master
-      condition: -n "$BUILD_OFFICIAL"
-  - provider: s3
-    bucket: libjpeg-turbo-pr
-    access_key_id:
-      secure: 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
-    secret_access_key:
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-    acl: public_read
-    local-dir: $HOME/src/ljt.nightly/latest/files
-    upload-dir: $TRAVIS_BRANCH/$TRAVIS_OS_NAME
-    on:
-      repo: libjpeg-turbo/libjpeg-turbo
-      branch: dev
-      condition: -n "$BUILD_OFFICIAL"

BUILDING.md

@@ -1,823 +0,0 @@
-Building libjpeg-turbo
-======================
-
-
-Build Requirements
-------------------
-
-
-### All Systems
-
-- [CMake](http://www.cmake.org) v2.8.12 or later
-
-- [NASM](http://www.nasm.us) or [YASM](http://yasm.tortall.net)
-  (if building x86 or x86-64 SIMD extensions)
-  * If using NASM, 2.10 or later is required.
-  * If using NASM, 2.10 or later (except 2.11.08) is required for an x86-64 Mac
-    build (2.11.08 does not work properly with libjpeg-turbo's x86-64 SIMD code
-    when building macho64 objects.)  NASM or YASM can be obtained from
-    [MacPorts](http://www.macports.org/) or [Homebrew](http://brew.sh/).
-  * If using YASM, 1.2.0 or later is required.
-     - NOTE: Currently, if it is desirable to hide the SIMD function symbols in
-       Mac executables or shared libraries that statically link with
-       libjpeg-turbo, then YASM must be used when building libjpeg-turbo.
-  * If building on Windows, **nasm.exe**/**yasm.exe** should be in your `PATH`.
-
-  The binary RPMs released by the NASM project do not work on older Linux
-  systems, such as Red Hat Enterprise Linux 5.  On such systems, you can easily
-  build and install NASM from a source RPM by downloading one of the SRPMs from
-
-  <http://www.nasm.us/pub/nasm/releasebuilds>
-
-  and executing the following as root:
-
-        ARCH=`uname -m`
-        rpmbuild --rebuild nasm-{version}.src.rpm
-        rpm -Uvh /usr/src/redhat/RPMS/$ARCH/nasm-{version}.$ARCH.rpm
-
-  NOTE: the NASM build will fail if texinfo is not installed.
-
-
-### Un*x Platforms (including Linux, Mac, FreeBSD, Solaris, and Cygwin)
-
-- GCC v4.1 (or later) or Clang recommended for best performance
-
-- If building the TurboJPEG Java wrapper, JDK or OpenJDK 1.5 or later is
-  required.  Most modern Linux distributions, as well as Solaris 10 and later,
-  include JDK or OpenJDK.  On OS X 10.5 and 10.6, it will be necessary to
-  install the Java Developer Package, which can be downloaded from
-  <http://developer.apple.com/downloads> (Apple ID required.)  For other
-  systems, you can obtain the Oracle Java Development Kit from
-  <http://www.oracle.com/technetwork/java/javase/downloads>.
-
-  * If using JDK 11 or later, CMake 3.10.x or later must also be used.
-
-### Windows
-
-- Microsoft Visual C++ 2005 or later
-
-  If you don't already have Visual C++, then the easiest way to get it is by
-  installing the
-  [Windows SDK](http://msdn.microsoft.com/en-us/windows/bb980924.aspx).
-  The Windows SDK includes both 32-bit and 64-bit Visual C++ compilers and
-  everything necessary to build libjpeg-turbo.
-
-  * You can also use Microsoft Visual Studio Express/Community Edition, which
-    is a free download.  (NOTE: versions prior to 2012 can only be used to
-    build 32-bit code.)
-  * If you intend to build libjpeg-turbo from the command line, then add the
-    appropriate compiler and SDK directories to the `INCLUDE`, `LIB`, and
-    `PATH` environment variables.  This is generally accomplished by
-    executing `vcvars32.bat` or `vcvars64.bat` and `SetEnv.cmd`.
-    `vcvars32.bat` and `vcvars64.bat` are part of Visual C++ and are located in
-    the same directory as the compiler.  `SetEnv.cmd` is part of the Windows
-    SDK.  You can pass optional arguments to `SetEnv.cmd` to specify a 32-bit
-    or 64-bit build environment.
-
-   ... OR ...
-
-- MinGW
-
-  [MSYS2](http://msys2.github.io/) or [tdm-gcc](http://tdm-gcc.tdragon.net/)
-  recommended if building on a Windows machine.  Both distributions install a
-  Start Menu link that can be used to launch a command prompt with the
-  appropriate compiler paths automatically set.
-
-- If building the TurboJPEG Java wrapper, JDK 1.5 or later is required.  This
-  can be downloaded from
-  <http://www.oracle.com/technetwork/java/javase/downloads>.
-
-  * If using JDK 11 or later, CMake 3.10.x or later must also be used.
-
-
-Out-of-Tree Builds
-------------------
-
-Binary objects, libraries, and executables are generated in the directory from
-which CMake is executed (the "binary directory"), and this directory need not
-necessarily be the same as the libjpeg-turbo source directory.  You can create
-multiple independent binary directories, in which different versions of
-libjpeg-turbo can be built from the same source tree using different compilers
-or settings.  In the sections below, *{build_directory}* refers to the binary
-directory, whereas *{source_directory}* refers to the libjpeg-turbo source
-directory.  For in-tree builds, these directories are the same.
-
-
-Build Procedure
----------------
-
-NOTE: The build procedures below assume that CMake is invoked from the command
-line, but all of these procedures can be adapted to the CMake GUI as
-well.
-
-
-### Un*x
-
-The following procedure will build libjpeg-turbo on Unix and Unix-like systems.
-(On Solaris, this generates a 32-bit build.  See "Build Recipes" below for
-64-bit build instructions.)
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" [additional CMake flags] {source_directory}
-    make
-
-This will generate the following files under *{build_directory}*:
-
-**libjpeg.a**<br>
-Static link library for the libjpeg API
-
-**libjpeg.so.{version}** (Linux, Unix)<br>
-**libjpeg.{version}.dylib** (Mac)<br>
-**cygjpeg-{version}.dll** (Cygwin)<br>
-Shared library for the libjpeg API
-
-By default, *{version}* is 62.2.0, 7.2.0, or 8.1.2, depending on whether
-libjpeg v6b (default), v7, or v8 emulation is enabled.  If using Cygwin,
-*{version}* is 62, 7, or 8.
-
-**libjpeg.so** (Linux, Unix)<br>
-**libjpeg.dylib** (Mac)<br>
-Development symlink for the libjpeg API
-
-**libjpeg.dll.a** (Cygwin)<br>
-Import library for the libjpeg API
-
-**libturbojpeg.a**<br>
-Static link library for the TurboJPEG API
-
-**libturbojpeg.so.0.2.0** (Linux, Unix)<br>
-**libturbojpeg.0.2.0.dylib** (Mac)<br>
-**cygturbojpeg-0.dll** (Cygwin)<br>
-Shared library for the TurboJPEG API
-
-**libturbojpeg.so** (Linux, Unix)<br>
-**libturbojpeg.dylib** (Mac)<br>
-Development symlink for the TurboJPEG API
-
-**libturbojpeg.dll.a** (Cygwin)<br>
-Import library for the TurboJPEG API
-
-
-### Visual C++ (Command Line)
-
-    cd {build_directory}
-    cmake -G"NMake Makefiles" -DCMAKE_BUILD_TYPE=Release [additional CMake flags] {source_directory}
-    nmake
-
-This will build either a 32-bit or a 64-bit version of libjpeg-turbo, depending
-on which version of **cl.exe** is in the `PATH`.
-
-The following files will be generated under *{build_directory}*:
-
-**jpeg-static.lib**<br>
-Static link library for the libjpeg API
-
-**jpeg{version}.dll**<br>
-DLL for the libjpeg API
-
-**jpeg.lib**<br>
-Import library for the libjpeg API
-
-**turbojpeg-static.lib**<br>
-Static link library for the TurboJPEG API
-
-**turbojpeg.dll**<br>
-DLL for the TurboJPEG API
-
-**turbojpeg.lib**<br>
-Import library for the TurboJPEG API
-
-*{version}* is 62, 7, or 8, depending on whether libjpeg v6b (default), v7, or
-v8 emulation is enabled.
-
-
-### Visual C++ (IDE)
-
-Choose the appropriate CMake generator option for your version of Visual Studio
-(run `cmake` with no arguments for a list of available generators.)  For
-instance:
-
-    cd {build_directory}
-    cmake -G"Visual Studio 10" [additional CMake flags] {source_directory}
-
-NOTE: Add "Win64" to the generator name (for example, "Visual Studio 10 Win64")
-to build a 64-bit version of libjpeg-turbo.  A separate build directory must be
-used for 32-bit and 64-bit builds.
-
-You can then open **ALL_BUILD.vcproj** in Visual Studio and build one of the
-configurations in that project ("Debug", "Release", etc.) to generate a full
-build of libjpeg-turbo.
-
-This will generate the following files under *{build_directory}*:
-
-**{configuration}/jpeg-static.lib**<br>
-Static link library for the libjpeg API
-
-**{configuration}/jpeg{version}.dll**<br>
-DLL for the libjpeg API
-
-**{configuration}/jpeg.lib**<br>
-Import library for the libjpeg API
-
-**{configuration}/turbojpeg-static.lib**<br>
-Static link library for the TurboJPEG API
-
-**{configuration}/turbojpeg.dll**<br>
-DLL for the TurboJPEG API
-
-**{configuration}/turbojpeg.lib**<br>
-Import library for the TurboJPEG API
-
-*{configuration}* is Debug, Release, RelWithDebInfo, or MinSizeRel, depending
-on the configuration you built in the IDE, and *{version}* is 62, 7, or 8,
-depending on whether libjpeg v6b (default), v7, or v8 emulation is enabled.
-
-
-### MinGW
-
-NOTE: This assumes that you are building on a Windows machine using the MSYS
-environment.  If you are cross-compiling on a Un*x platform (including Mac and
-Cygwin), then see "Build Recipes" below.
-
-    cd {build_directory}
-    cmake -G"MSYS Makefiles" [additional CMake flags] {source_directory}
-    make
-
-This will generate the following files under *{build_directory}*:
-
-**libjpeg.a**<br>
-Static link library for the libjpeg API
-
-**libjpeg-{version}.dll**<br>
-DLL for the libjpeg API
-
-**libjpeg.dll.a**<br>
-Import library for the libjpeg API
-
-**libturbojpeg.a**<br>
-Static link library for the TurboJPEG API
-
-**libturbojpeg.dll**<br>
-DLL for the TurboJPEG API
-
-**libturbojpeg.dll.a**<br>
-Import library for the TurboJPEG API
-
-*{version}* is 62, 7, or 8, depending on whether libjpeg v6b (default), v7, or
-v8 emulation is enabled.
-
-
-### Debug Build
-
-Add `-DCMAKE_BUILD_TYPE=Debug` to the CMake command line.  Or, if building
-with NMake, remove `-DCMAKE_BUILD_TYPE=Release` (Debug builds are the default
-with NMake.)
-
-
-### libjpeg v7 or v8 API/ABI Emulation
-
-Add `-DWITH_JPEG7=1` to the CMake command line to build a version of
-libjpeg-turbo that is API/ABI-compatible with libjpeg v7.  Add `-DWITH_JPEG8=1`
-to the CMake command line to build a version of libjpeg-turbo that is
-API/ABI-compatible with libjpeg v8.  See [README.md](README.md) for more
-information about libjpeg v7 and v8 emulation.
-
-
-### In-Memory Source/Destination Managers
-
-When using libjpeg v6b or v7 API/ABI emulation, add `-DWITH_MEM_SRCDST=0` to
-the CMake command line to build a version of libjpeg-turbo that lacks the
-`jpeg_mem_src()` and `jpeg_mem_dest()` functions.  These functions were not
-part of the original libjpeg v6b and v7 APIs, so removing them ensures strict
-conformance with those APIs.  See [README.md](README.md) for more information.
-
-
-### Arithmetic Coding Support
-
-Since the patent on arithmetic coding has expired, this functionality has been
-included in this release of libjpeg-turbo.  libjpeg-turbo's implementation is
-based on the implementation in libjpeg v8, but it works when emulating libjpeg
-v7 or v6b as well.  The default is to enable both arithmetic encoding and
-decoding, but those who have philosophical objections to arithmetic coding can
-add `-DWITH_ARITH_ENC=0` or `-DWITH_ARITH_DEC=0` to the CMake command line to
-disable encoding or decoding (respectively.)
-
-
-### TurboJPEG Java Wrapper
-
-Add `-DWITH_JAVA=1` to the CMake command line to incorporate an optional Java
-Native Interface (JNI) wrapper into the TurboJPEG shared library and build the
-Java front-end classes to support it.  This allows the TurboJPEG shared library
-to be used directly from Java applications.  See [java/README](java/README) for
-more details.
-
-If Java is not in your `PATH`, or if you wish to use an alternate JDK to
-build/test libjpeg-turbo, then (prior to running CMake) set the `JAVA_HOME`
-environment variable to the location of the JDK that you wish to use.  The
-`Java_JAVAC_EXECUTABLE`, `Java_JAVA_EXECUTABLE`, and `Java_JAR_EXECUTABLE`
-CMake variables can also be used to specify alternate commands or locations for
-javac, jar, and java (respectively.)  You can also set the
-`CMAKE_JAVA_COMPILE_FLAGS` CMake variable or the `JAVAFLAGS` environment
-variable to specify arguments that should be passed to the Java compiler when
-building the TurboJPEG classes, and the `JAVAARGS` CMake variable to specify
-arguments that should be passed to the JRE when running the TurboJPEG Java unit
-tests.
-
-
-Build Recipes
--------------
-
-
-### 32-bit Build on 64-bit Linux/Unix/Mac
-
-Use export/setenv to set the following environment variables before running
-CMake:
-
-    CFLAGS=-m32
-    LDFLAGS=-m32
-
-
-### 64-bit Build on Solaris
-
-Use export/setenv to set the following environment variables before running
-CMake:
-
-    CFLAGS=-m64
-    LDFLAGS=-m64
-
-
-### Other Compilers
-
-On Un*x systems, prior to running CMake, you can set the `CC` environment
-variable to the command used to invoke the C compiler.
-
-
-### 32-bit MinGW Build on Un*x (including Mac and Cygwin)
-
-Create a file called **toolchain.cmake** under *{build_directory}*, with the
-following contents:
-
-    set(CMAKE_SYSTEM_NAME Windows)
-    set(CMAKE_SYSTEM_PROCESSOR X86)
-    set(CMAKE_C_COMPILER {mingw_binary_path}/i686-w64-mingw32-gcc)
-    set(CMAKE_RC_COMPILER {mingw_binary_path}/i686-w64-mingw32-windres)
-
-*{mingw\_binary\_path}* is the directory under which the MinGW binaries are
-located (usually **/usr/bin**.)  Next, execute the following commands:
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
-      [additional CMake flags] {source_directory}
-    make
-
-
-### 64-bit MinGW Build on Un*x (including Mac and Cygwin)
-
-Create a file called **toolchain.cmake** under *{build_directory}*, with the
-following contents:
-
-    set(CMAKE_SYSTEM_NAME Windows)
-    set(CMAKE_SYSTEM_PROCESSOR AMD64)
-    set(CMAKE_C_COMPILER {mingw_binary_path}/x86_64-w64-mingw32-gcc)
-    set(CMAKE_RC_COMPILER {mingw_binary_path}/x86_64-w64-mingw32-windres)
-
-*{mingw\_binary\_path}* is the directory under which the MinGW binaries are
-located (usually **/usr/bin**.)  Next, execute the following commands:
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
-      [additional CMake flags] {source_directory}
-    make
-
-
-Building libjpeg-turbo for iOS
-------------------------------
-
-iOS platforms, such as the iPhone and iPad, use ARM processors, and all
-currently supported models include NEON instructions.  Thus, they can take
-advantage of libjpeg-turbo's SIMD extensions to significantly accelerate JPEG
-compression/decompression.  This section describes how to build libjpeg-turbo
-for these platforms.
-
-
-### Additional build requirements
-
-- For configurations that require [gas-preprocessor.pl]
-  (https://raw.githubusercontent.com/libjpeg-turbo/gas-preprocessor/master/gas-preprocessor.pl),
-  it should be installed in your `PATH`.
-
-
-### ARMv7 (32-bit)
-
-**gas-preprocessor.pl required**
-
-The following scripts demonstrate how to build libjpeg-turbo to run on the
-iPhone 3GS-4S/iPad 1st-3rd Generation and newer:
-
-#### Xcode 4.2 and earlier (LLVM-GCC)
-
-    IOS_PLATFORMDIR=/Developer/Platforms/iPhoneOS.platform
-    IOS_SYSROOT=($IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk)
-    export CFLAGS="-mfloat-abi=softfp -march=armv7 -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon -miphoneos-version-min=3.0"
-
-    cd {build_directory}
-
-    cat <<EOF >toolchain.cmake
-    set(CMAKE_SYSTEM_NAME Darwin)
-    set(CMAKE_SYSTEM_PROCESSOR arm)
-    set(CMAKE_C_COMPILER ${IOS_PLATFORMDIR}/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2)
-    EOF
-
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
-      -DCMAKE_OSX_SYSROOT=${IOS_SYSROOT[0]} \
-      [additional CMake flags] {source_directory}
-    make
-
-#### Xcode 4.3-4.6 (LLVM-GCC)
-
-Same as above, but replace the first line with:
-
-    IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-
-#### Xcode 5 and later (Clang)
-
-    IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-    IOS_SYSROOT=($IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk)
-    export CFLAGS="-mfloat-abi=softfp -arch armv7 -miphoneos-version-min=3.0"
-    export ASMFLAGS="-no-integrated-as"
-
-    cd {build_directory}
-
-    cat <<EOF >toolchain.cmake
-    set(CMAKE_SYSTEM_NAME Darwin)
-    set(CMAKE_SYSTEM_PROCESSOR arm)
-    set(CMAKE_C_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang)
-    EOF
-
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
-      -DCMAKE_OSX_SYSROOT=${IOS_SYSROOT[0]} \
-      [additional CMake flags] {source_directory}
-    make
-
-
-### ARMv7s (32-bit)
-
-**gas-preprocessor.pl required**
-
-The following scripts demonstrate how to build libjpeg-turbo to run on the
-iPhone 5/iPad 4th Generation and newer:
-
-#### Xcode 4.5-4.6 (LLVM-GCC)
-
-    IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-    IOS_SYSROOT=($IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk)
-    export CFLAGS="-Wall -mfloat-abi=softfp -march=armv7s -mcpu=swift -mtune=swift -mfpu=neon -miphoneos-version-min=6.0"
-
-    cd {build_directory}
-
-    cat <<EOF >toolchain.cmake
-    set(CMAKE_SYSTEM_NAME Darwin)
-    set(CMAKE_SYSTEM_PROCESSOR arm)
-    set(CMAKE_C_COMPILER ${IOS_PLATFORMDIR}/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2)
-    EOF
-
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
-      -DCMAKE_OSX_SYSROOT=${IOS_SYSROOT[0]} \
-      [additional CMake flags] {source_directory}
-    make
-
-#### Xcode 5 and later (Clang)
-
-Same as the ARMv7 build procedure for Xcode 5 and later, except replace the
-compiler flags as follows:
-
-    export CFLAGS="-Wall -mfloat-abi=softfp -arch armv7s -miphoneos-version-min=6.0"
-
-
-### ARMv8 (64-bit)
-
-**gas-preprocessor.pl required if using Xcode < 6**
-
-The following script demonstrates how to build libjpeg-turbo to run on the
-iPhone 5S/iPad Mini 2/iPad Air and newer.
-
-    IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-    IOS_SYSROOT=($IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk)
-    export CFLAGS="-Wall -arch arm64 -miphoneos-version-min=7.0 -funwind-tables"
-
-    cd {build_directory}
-
-    cat <<EOF >toolchain.cmake
-    set(CMAKE_SYSTEM_NAME Darwin)
-    set(CMAKE_SYSTEM_PROCESSOR aarch64)
-    set(CMAKE_C_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang)
-    EOF
-
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
-      -DCMAKE_OSX_SYSROOT=${IOS_SYSROOT[0]} \
-      [additional CMake flags] {source_directory}
-    make
-
-Once built, lipo can be used to combine the ARMv7, v7s, and/or v8 variants into
-a universal library.
-
-
-Building libjpeg-turbo for Android
-----------------------------------
-
-Building libjpeg-turbo for Android platforms requires v13b or later of the
-[Android NDK](https://developer.android.com/tools/sdk/ndk).
-
-
-### ARMv7 (32-bit)
-
-The following is a general recipe script that can be modified for your specific
-needs.
-
-    # Set these variables to suit your needs
-    NDK_PATH={full path to the NDK directory-- for example,
-      /opt/android/android-ndk-r16b}
-    TOOLCHAIN={"gcc" or "clang"-- "gcc" must be used with NDK r16b and earlier,
-      and "clang" must be used with NDK r17c and later}
-    ANDROID_VERSION={the minimum version of Android to support-- for example,
-      "16", "19", etc.}
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" \
-      -DANDROID_ABI=armeabi-v7a \
-      -DANDROID_ARM_MODE=arm \
-      -DANDROID_PLATFORM=android-${ANDROID_VERSION} \
-      -DANDROID_TOOLCHAIN=${TOOLCHAIN} \
-      -DCMAKE_ASM_FLAGS="--target=arm-linux-androideabi${ANDROID_VERSION}" \
-      -DCMAKE_TOOLCHAIN_FILE=${NDK_PATH}/build/cmake/android.toolchain.cmake \
-      [additional CMake flags] {source_directory}
-    make
-
-
-### ARMv8 (64-bit)
-
-The following is a general recipe script that can be modified for your specific
-needs.
-
-    # Set these variables to suit your needs
-    NDK_PATH={full path to the NDK directory-- for example,
-      /opt/android/android-ndk-r16b}
-    TOOLCHAIN={"gcc" or "clang"-- "gcc" must be used with NDK r14b and earlier,
-      and "clang" must be used with NDK r17c and later}
-    ANDROID_VERSION={the minimum version of Android to support.  "21" or later
-      is required for a 64-bit build.}
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" \
-      -DANDROID_ABI=arm64-v8a \
-      -DANDROID_ARM_MODE=arm \
-      -DANDROID_PLATFORM=android-${ANDROID_VERSION} \
-      -DANDROID_TOOLCHAIN=${TOOLCHAIN} \
-      -DCMAKE_ASM_FLAGS="--target=aarch64-linux-android${ANDROID_VERSION}" \
-      -DCMAKE_TOOLCHAIN_FILE=${NDK_PATH}/build/cmake/android.toolchain.cmake \
-      [additional CMake flags] {source_directory}
-    make
-
-
-### x86 (32-bit)
-
-The following is a general recipe script that can be modified for your specific
-needs.
-
-    # Set these variables to suit your needs
-    NDK_PATH={full path to the NDK directory-- for example,
-      /opt/android/android-ndk-r16b}
-    TOOLCHAIN={"gcc" or "clang"-- "gcc" must be used with NDK r14b and earlier,
-      and "clang" must be used with NDK r17c and later}
-    ANDROID_VERSION={The minimum version of Android to support-- for example,
-      "16", "19", etc.}
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" \
-      -DANDROID_ABI=x86 \
-      -DANDROID_PLATFORM=android-${ANDROID_VERSION} \
-      -DANDROID_TOOLCHAIN=${TOOLCHAIN} \
-      -DCMAKE_TOOLCHAIN_FILE=${NDK_PATH}/build/cmake/android.toolchain.cmake \
-      [additional CMake flags] {source_directory}
-    make
-
-
-### x86-64 (64-bit)
-
-The following is a general recipe script that can be modified for your specific
-needs.
-
-    # Set these variables to suit your needs
-    NDK_PATH={full path to the NDK directory-- for example,
-      /opt/android/android-ndk-r16b}
-    TOOLCHAIN={"gcc" or "clang"-- "gcc" must be used with NDK r14b and earlier,
-      and "clang" must be used with NDK r17c and later}
-    ANDROID_VERSION={the minimum version of Android to support.  "21" or later
-      is required for a 64-bit build.}
-
-    cd {build_directory}
-    cmake -G"Unix Makefiles" \
-      -DANDROID_ABI=x86_64 \
-      -DANDROID_PLATFORM=android-${ANDROID_VERSION} \
-      -DANDROID_TOOLCHAIN=${TOOLCHAIN} \
-      -DCMAKE_TOOLCHAIN_FILE=${NDK_PATH}/build/cmake/android.toolchain.cmake \
-      [additional CMake flags] {source_directory}
-    make
-
-
-Advanced CMake Options
-----------------------
-
-To list and configure other CMake options not specifically mentioned in this
-guide, run
-
-    ccmake {source_directory}
-
-or
-
-    cmake-gui {source_directory}
-
-from the build directory after initially configuring the build.  CCMake is a
-text-based interactive version of CMake, and CMake-GUI is a GUI version.  Both
-will display all variables that are relevant to the libjpeg-turbo build, their
-current values, and a help string describing what they do.
-
-
-Installing libjpeg-turbo
-========================
-
-You can use the build system to install libjpeg-turbo (as opposed to creating
-an installer package.)  To do this, run `make install` or `nmake install`
-(or build the "install" target in the Visual Studio IDE.)  Running
-`make uninstall` or `nmake uninstall` (or building the "uninstall" target in
-the Visual Studio IDE) will uninstall libjpeg-turbo.
-
-The `CMAKE_INSTALL_PREFIX` CMake variable can be modified in order to install
-libjpeg-turbo into a directory of your choosing.  If you don't specify
-`CMAKE_INSTALL_PREFIX`, then the default is:
-
-**c:\libjpeg-turbo**<br>
-Visual Studio 32-bit build
-
-**c:\libjpeg-turbo64**<br>
-Visual Studio 64-bit build
-
-**c:\libjpeg-turbo-gcc**<br>
-MinGW 32-bit build
-
-**c:\libjpeg-turbo-gcc64**<br>
-MinGW 64-bit build
-
-**/opt/libjpeg-turbo**<br>
-Un*x
-
-The default value of `CMAKE_INSTALL_PREFIX` causes the libjpeg-turbo files to
-be installed with a directory structure resembling that of the official
-libjpeg-turbo binary packages.  Changing the value of `CMAKE_INSTALL_PREFIX`
-(for instance, to **/usr/local**) causes the libjpeg-turbo files to be
-installed with a directory structure that conforms to GNU standards.
-
-The `CMAKE_INSTALL_BINDIR`, `CMAKE_INSTALL_DATAROOTDIR`,
-`CMAKE_INSTALL_DOCDIR`, `CMAKE_INSTALL_INCLUDEDIR`, `CMAKE_INSTALL_JAVADIR`,
-`CMAKE_INSTALL_LIBDIR`, and `CMAKE_INSTALL_MANDIR` CMake variables allow a
-finer degree of control over where specific files in the libjpeg-turbo
-distribution should be installed.  These directory variables can either be
-specified as absolute paths or as paths relative to `CMAKE_INSTALL_PREFIX` (for
-instance, setting `CMAKE_INSTALL_DOCDIR` to **doc** would cause the
-documentation to be installed in **${CMAKE\_INSTALL\_PREFIX}/doc**.)  If a
-directory variable contains the name of another directory variable in angle
-brackets, then its final value will depend on the final value of that other
-variable.  For instance, the default value of `CMAKE_INSTALL_MANDIR` is
-**\<CMAKE\_INSTALL\_DATAROOTDIR\>/man**.
-
-NOTE: If setting one of these directory variables to a relative path using the
-CMake command line, you must specify that the variable is of type `PATH`.
-For example:
-
-    cmake -G"{generator type}" -DCMAKE_INSTALL_LIBDIR:PATH=lib {source_directory}
-
-Otherwise, CMake will assume that the path is relative to the build directory
-rather than the install directory.
-
-
-Creating Distribution Packages
-==============================
-
-The following commands can be used to create various types of distribution
-packages:
-
-
-Linux
------
-
-    make rpm
-
-Create Red Hat-style binary RPM package.  Requires RPM v4 or later.
-
-    make srpm
-
-This runs `make dist` to create a pristine source tarball, then creates a
-Red Hat-style source RPM package from the tarball.  Requires RPM v4 or later.
-
-    make deb
-
-Create Debian-style binary package.  Requires dpkg.
-
-
-Mac
----
-
-    make dmg
-
-Create Mac package/disk image.  This requires pkgbuild and productbuild, which
-are installed by default on OS X 10.7 and later and which can be obtained by
-installing Xcode 3.2.6 (with the "Unix Development" option) on OS X 10.6.
-Packages built in this manner can be installed on OS X 10.5 and later, but they
-must be built on OS X 10.6 or later.
-
-    make udmg
-
-This creates a Mac package/disk image that contains universal x86-64/i386/ARM
-binaries.  The following CMake variables control which architectures are
-included in the universal binaries.  Setting any of these variables to an empty
-string excludes that architecture from the package.
-
-* `OSX_32BIT_BUILD`: Directory containing an i386 (32-bit) Mac build of
-  libjpeg-turbo (default: *{source_directory}*/osxx86)
-* `IOS_ARMV7_BUILD`: Directory containing an ARMv7 (32-bit) iOS build of
-  libjpeg-turbo (default: *{source_directory}*/iosarmv7)
-* `IOS_ARMV7S_BUILD`: Directory containing an ARMv7s (32-bit) iOS build of
-  libjpeg-turbo (default: *{source_directory}*/iosarmv7s)
-* `IOS_ARMV8_BUILD`: Directory containing an ARMv8 (64-bit) iOS build of
-  libjpeg-turbo (default: *{source_directory}*/iosarmv8)
-
-You should first use CMake to configure i386, ARMv7, ARMv7s, and/or ARMv8
-sub-builds of libjpeg-turbo (see "Build Recipes" and "Building libjpeg-turbo
-for iOS" above) in build directories that match those specified in the
-aforementioned CMake variables.  Next, configure the primary build of
-libjpeg-turbo as an out-of-tree build, and build it.  Once the primary build
-has been built, run `make udmg` from the build directory.  The packaging system
-will build the sub-builds, use lipo to combine them into a single set of
-universal binaries, then package the universal binaries in the same manner as
-`make dmg`.
-
-
-Cygwin
-------
-
-    make cygwinpkg
-
-Build a Cygwin binary package.
-
-
-Windows
--------
-
-If using NMake:
-
-    cd {build_directory}
-    nmake installer
-
-If using MinGW:
-
-    cd {build_directory}
-    make installer
-
-If using the Visual Studio IDE, build the "installer" target.
-
-The installer package (libjpeg-turbo-*{version}*[-gcc|-vc][64].exe) will be
-located under *{build_directory}*.  If building using the Visual Studio IDE,
-then the installer package will be located in a subdirectory with the same name
-as the configuration you built (such as *{build_directory}*\Debug\ or
-*{build_directory}*\Release\).
-
-Building a Windows installer requires the
-[Nullsoft Install System](http://nsis.sourceforge.net/).  makensis.exe should
-be in your `PATH`.
-
-
-Regression testing
-==================
-
-The most common way to test libjpeg-turbo is by invoking `make test` (Un*x) or
-`nmake test` (Windows command line) or by building the "RUN_TESTS" target
-(Visual Studio IDE), once the build has completed.  This runs a series of tests
-to ensure that mathematical compatibility has been maintained between
-libjpeg-turbo and libjpeg v6b.  This also invokes the TurboJPEG unit tests,
-which ensure that the colorspace extensions, YUV encoding, decompression
-scaling, and other features of the TurboJPEG C and Java APIs are working
-properly (and, by extension, that the equivalent features of the underlying
-libjpeg API are also working.)
-
-Invoking `make testclean` (Un*x) or `nmake testclean` (Windows command line) or
-building the "testclean" target (Visual Studio IDE) will clean up the output
-images generated by the tests.
-
-On Un*x platforms, more extensive tests of the TurboJPEG C and Java wrappers
-can be run by invoking `make tjtest`.  These extended TurboJPEG tests
-essentially iterate through all of the available features of the TurboJPEG APIs
-that are not covered by the TurboJPEG unit tests (including the lossless
-transform options) and compare the images generated by each feature to images
-generated using the equivalent feature in the libjpeg API.  The extended
-TurboJPEG tests are meant to test for regressions in the TurboJPEG wrappers,
-not in the underlying libjpeg API library.

Brewfile

@@ -1,4 +0,0 @@
-brew 'yasm'
-brew 'gcc@5'
-brew 'md5sha1sum'
-cask 'Caskroom/versions/java6'

LICENSE.md

@@ -1,132 +0,0 @@
-libjpeg-turbo Licenses
-======================
-
-libjpeg-turbo is covered by three compatible BSD-style open source licenses:
-
-- The IJG (Independent JPEG Group) License, which is listed in
-  [README.ijg](README.ijg)
-
-  This license applies to the libjpeg API library and associated programs
-  (any code inherited from libjpeg, and any modifications to that code.)
-
-- The Modified (3-clause) BSD License, which is listed below
-
-  This license covers the TurboJPEG API library and associated programs, as
-  well as the build system.
-
-- The [zlib License](https://opensource.org/licenses/Zlib)
-
-  This license is a subset of the other two, and it covers the libjpeg-turbo
-  SIMD extensions.
-
-
-Complying with the libjpeg-turbo Licenses
-=========================================
-
-This section provides a roll-up of the libjpeg-turbo licensing terms, to the
-best of our understanding.
-
-1.  If you are distributing a modified version of the libjpeg-turbo source,
-    then:
-
-    1.  You cannot alter or remove any existing copyright or license notices
-        from the source.
-
-        **Origin**
-        - Clause 1 of the IJG License
-        - Clause 1 of the Modified BSD License
-        - Clauses 1 and 3 of the zlib License
-
-    2.  You must add your own copyright notice to the header of each source
-        file you modified, so others can tell that you modified that file (if
-        there is not an existing copyright header in that file, then you can
-        simply add a notice stating that you modified the file.)
-
-        **Origin**
-        - Clause 1 of the IJG License
-        - Clause 2 of the zlib License
-
-    3.  You must include the IJG README file, and you must not alter any of the
-        copyright or license text in that file.
-
-        **Origin**
-        - Clause 1 of the IJG License
-
-2.  If you are distributing only libjpeg-turbo binaries without the source, or
-    if you are distributing an application that statically links with
-    libjpeg-turbo, then:
-
-    1.  Your product documentation must include a message stating:
-
-        This software is based in part on the work of the Independent JPEG
-        Group.
-
-        **Origin**
-        - Clause 2 of the IJG license
-
-    2.  If your binary distribution includes or uses the TurboJPEG API, then
-        your product documentation must include the text of the Modified BSD
-        License (see below.)
-
-        **Origin**
-        - Clause 2 of the Modified BSD License
-
-3.  You cannot use the name of the IJG or The libjpeg-turbo Project or the
-    contributors thereof in advertising, publicity, etc.
-
-    **Origin**
-    - IJG License
-    - Clause 3 of the Modified BSD License
-
-4.  The IJG and The libjpeg-turbo Project do not warrant libjpeg-turbo to be
-    free of defects, nor do we accept any liability for undesirable
-    consequences resulting from your use of the software.
-
-    **Origin**
-    - IJG License
-    - Modified BSD License
-    - zlib License
-
-
-The Modified (3-clause) BSD License
-===================================
-
-Copyright (C)2009-2019 D. R. Commander.  All Rights Reserved.
-Copyright (C)2015 Viktor Szathmáry.  All Rights Reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-- Redistributions of source code must retain the above copyright notice,
-  this list of conditions and the following disclaimer.
-- Redistributions in binary form must reproduce the above copyright notice,
-  this list of conditions and the following disclaimer in the documentation
-  and/or other materials provided with the distribution.
-- Neither the name of the libjpeg-turbo Project nor the names of its
-  contributors may be used to endorse or promote products derived from this
-  software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-
-
-Why Three Licenses?
-===================
-
-The zlib License could have been used instead of the Modified (3-clause) BSD
-License, and since the IJG License effectively subsumes the distribution
-conditions of the zlib License, this would have effectively placed
-libjpeg-turbo binary distributions under the IJG License.  However, the IJG
-License specifically refers to the Independent JPEG Group and does not extend
-attribution and endorsement protections to other entities.  Thus, it was
-desirable to choose a license that granted us the same protections for new code
-that were granted to the IJG for code derived from their software.

Makefile.am

@@ -0,0 +1,138 @@
+## Process this file with automake to produce Makefile.in
+#
+#  Automake Makefile for the JPEG library
+#
+#  This file is written by Bob Friesenhahn, Guido Vollbeding
+#
+
+# Sources to build library
+LIBSOURCES = jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \
+        jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
+        jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \
+        jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
+        jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
+        jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \
+        jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \
+        jquant2.c jutils.c jmemmgr.c @MEMORYMGR@.c
+
+# System dependent sources
+SYSDEPSOURCES = jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c
+
+# Headers which are installed to support the library
+INSTINCLUDES  = jerror.h jmorecfg.h jpeglib.h
+
+# Headers which are not installed
+OTHERINCLUDES = cderror.h cdjpeg.h jdct.h jinclude.h jmemsys.h jpegint.h \
+        jversion.h transupp.h
+
+# Manual pages (Automake uses 'MANS' for itself)
+DISTMANS= cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
+
+# Other documentation files
+DOCS= README install.txt usage.txt wizard.txt example.c libjpeg.txt \
+        structure.txt coderules.txt filelist.txt change.log
+
+# Makefiles for various systems
+MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
+        makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
+        makefile.vs makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 \
+        makejmak.vc6 makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 \
+        makeddsp.vc6 makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 \
+        makerdep.vc6 makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 \
+        makewmak.vc6 makejsln.v15 makeasln.v15 makejvcx.v15 makejfil.v15 \
+        makecvcx.v15 makecfil.v15 makedvcx.v15 makedfil.v15 maketvcx.v15 \
+        maketfil.v15 makervcx.v15 makerfil.v15 makewvcx.v15 makewfil.v15 \
+        makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st \
+        makefile.manx makefile.sas makefile.mms makefile.vms makvms.opt
+
+# Configuration files
+CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
+        jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
+        jconfig.vms
+
+# Support scripts for configure
+CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
+        missing ar-lib
+
+# Miscellaneous support files
+OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map libjpeg.pc.in
+
+# Test support files
+TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
+        testimgp.jpg
+
+# libtool libraries to build
+lib_LTLIBRARIES = libjpeg.la
+
+# Library sources for libjpeg.la
+libjpeg_la_SOURCES = $(LIBSOURCES)
+
+# LDFLAGS for libjpeg.la
+libjpeg_la_LDFLAGS = -no-undefined \
+        -version-info $(JPEG_LIB_VERSION)
+
+if HAVE_LD_VERSION_SCRIPT
+  libjpeg_la_LDFLAGS += -Wl,--version-script=$(srcdir)/libjpeg.map
+endif
+
+# Executables to build
+bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom
+
+# Executable sources & libs
+cjpeg_SOURCES    = cjpeg.c rdppm.c rdgif.c rdtarga.c rdrle.c rdbmp.c \
+        rdswitch.c cdjpeg.c
+cjpeg_LDADD      = libjpeg.la
+djpeg_SOURCES    = djpeg.c wrppm.c wrgif.c wrtarga.c wrrle.c wrbmp.c \
+        rdcolmap.c cdjpeg.c
+djpeg_LDADD      = libjpeg.la
+jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c
+jpegtran_LDADD   = libjpeg.la
+rdjpgcom_SOURCES = rdjpgcom.c
+wrjpgcom_SOURCES = wrjpgcom.c
+
+# Manual pages to install
+man_MANS = $(DISTMANS)
+
+# Headers to install
+include_HEADERS = $(INSTINCLUDES)
+
+# Other distributed headers
+noinst_HEADERS = $(OTHERINCLUDES)
+
+# Other distributed files
+EXTRA_DIST =  $(DOCS) $(DISTMANS) $(MKFILES) $(CONFIGFILES) $(SYSDEPSOURCES) \
+        $(OTHERFILES) $(TESTFILES)
+
+# pkg-config file
+pkgconfigdir = $(libdir)/pkgconfig
+nodist_pkgconfig_DATA = libjpeg.pc
+
+# Files to be cleaned
+CLEANFILES = testout.ppm testout.bmp testout.jpg testoutp.ppm testoutp.jpg \
+        testoutt.jpg
+
+# Install jconfig.h
+install-data-local:
+	$(mkinstalldirs) $(DESTDIR)$(includedir)
+	$(INSTALL_HEADER) jconfig.h $(DESTDIR)$(includedir)/jconfig.h
+
+# Uninstall jconfig.h
+uninstall-local:
+	rm -f $(DESTDIR)$(includedir)/jconfig.h
+
+# Run tests
+test: check-local
+check-local:
+	rm -f testout*
+	./djpeg -dct int -ppm -outfile testout.ppm  $(srcdir)/testorig.jpg
+	./djpeg -dct int -bmp -colors 256 -outfile testout.bmp  $(srcdir)/testorig.jpg
+	./cjpeg -dct int -outfile testout.jpg  $(srcdir)/testimg.ppm
+	./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg
+	./cjpeg -dct int -progressive -opt -outfile testoutp.jpg $(srcdir)/testimg.ppm
+	./jpegtran -outfile testoutt.jpg $(srcdir)/testprog.jpg
+	cmp $(srcdir)/testimg.ppm testout.ppm
+	cmp $(srcdir)/testimg.bmp testout.bmp
+	cmp $(srcdir)/testimg.jpg testout.jpg
+	cmp $(srcdir)/testimg.ppm testoutp.ppm
+	cmp $(srcdir)/testimgp.jpg testoutp.jpg
+	cmp $(srcdir)/testorig.jpg testoutt.jpg

README

@@ -1,16 +1,12 @@
-libjpeg-turbo note:  This file has been modified by The libjpeg-turbo Project
-to include only information relevant to libjpeg-turbo, to wordsmith certain
-sections, and to remove impolitic language that existed in the libjpeg v8
-README.  It is included only for reference.  Please see README.md for
-information specific to libjpeg-turbo.
-
-
 The Independent JPEG Group's JPEG software
 ==========================================
 
-This distribution contains a release of the Independent JPEG Group's free JPEG
+README for release 9c of 14-Jan-2018
-software.  You are welcome to redistribute this software and to use it for any
+====================================
-purpose, subject to the conditions under LEGAL ISSUES, below.
+
+This distribution contains the ninth public release of the Independent JPEG
+Group's free JPEG software.  You are welcome to redistribute this software and
+to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
 
 This software is the work of Tom Lane, Guido Vollbeding, Philip Gladstone,
 Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson,
@@ -18,7 +14,7 @@ Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers,
 and other members of the Independent JPEG Group.
 
 IJG is not affiliated with the ISO/IEC JTC1/SC29/WG1 standards committee
-(also known as JPEG, together with ITU-T SG16).
+(previously known as JPEG, together with ITU-T SG16).
 
 
 DOCUMENTATION ROADMAP
@@ -30,12 +26,14 @@ OVERVIEW            General description of JPEG and the IJG software.
 LEGAL ISSUES        Copyright, lack of warranty, terms of distribution.
 REFERENCES          Where to learn more about JPEG.
 ARCHIVE LOCATIONS   Where to find newer versions of this software.
+ACKNOWLEDGMENTS     Special thanks.
 FILE FORMAT WARS    Software *not* to get.
 TO DO               Plans for future IJG releases.
 
 Other documentation files in the distribution are:
 
 User documentation:
+  install.txt       How to configure and install the IJG software.
   usage.txt         Usage instructions for cjpeg, djpeg, jpegtran,
                     rdjpgcom, and wrjpgcom.
   *.1               Unix-style man pages for programs (same info as usage.txt).
@@ -43,13 +41,14 @@ User documentation:
   change.log        Version-to-version change highlights.
 Programmer and internal documentation:
   libjpeg.txt       How to use the JPEG library in your own programs.
-  example.txt       Sample code for calling the JPEG library.
+  example.c         Sample code for calling the JPEG library.
   structure.txt     Overview of the JPEG library's internal structure.
+  filelist.txt      Road map of IJG files.
   coderules.txt     Coding style rules --- please read if you contribute code.
 
-Please read at least usage.txt.  Some information can also be found in the JPEG
+Please read at least the files install.txt and usage.txt.  Some information
-FAQ (Frequently Asked Questions) article.  See ARCHIVE LOCATIONS below to find
+can also be found in the JPEG FAQ (Frequently Asked Questions) article.  See
-out where to obtain the FAQ article.
+ARCHIVE LOCATIONS below to find out where to obtain the FAQ article.
 
 If you want to understand how the JPEG code works, we suggest reading one or
 more of the REFERENCES, then looking at the documentation files (in roughly
@@ -61,19 +60,7 @@ OVERVIEW
 
 This package contains C software to implement JPEG image encoding, decoding,
 and transcoding.  JPEG (pronounced "jay-peg") is a standardized compression
-method for full-color and grayscale images.  JPEG's strong suit is compressing
+method for full-color and grayscale images.
-photographic images or other types of images that have smooth color and
-brightness transitions between neighboring pixels.  Images with sharp lines or
-other abrupt features may not compress well with JPEG, and a higher JPEG
-quality may have to be used to avoid visible compression artifacts with such
-images.
-
-JPEG is lossy, meaning that the output pixels are not necessarily identical to
-the input pixels.  However, on photographic content and other "smooth" images,
-very good compression ratios can be obtained with no visible compression
-artifacts, and extremely high compression ratios are possible if you are
-willing to sacrifice image quality (by reducing the "quality" setting in the
-compressor.)
 
 This software implements JPEG baseline, extended-sequential, and progressive
 compression processes.  Provision is made for supporting all variants of these
@@ -128,7 +115,7 @@ with respect to this software, its quality, accuracy, merchantability, or
 fitness for a particular purpose.  This software is provided "AS IS", and you,
 its user, assume the entire risk as to its quality and accuracy.
 
-This software is copyright (C) 1991-2016, Thomas G. Lane, Guido Vollbeding.
+This software is copyright (C) 1991-2018, Thomas G. Lane, Guido Vollbeding.
 All Rights Reserved except as specified below.
 
 Permission is hereby granted to use, copy, modify, and distribute this
@@ -159,6 +146,12 @@ commercial products, provided that all warranty or liability claims are
 assumed by the product vendor.
 
 
+The Unix configuration script "configure" was produced with GNU Autoconf.
+It is copyright by the Free Software Foundation but is freely distributable.
+The same holds for its supporting scripts (config.guess, config.sub,
+ltmain.sh).  Another support script, install-sh, is copyright by X Consortium
+but is also freely distributable.
+
 The IJG distribution formerly included code to read and write GIF files.
 To avoid entanglement with the Unisys LZW patent (now expired), GIF reading
 support has been removed altogether, and the GIF writer has been simplified
@@ -166,11 +159,6 @@ to produce "uncompressed GIFs".  This technique does not use the LZW
 algorithm; the resulting GIF files are larger than usual, but are readable
 by all standard GIF decoders.
 
-We are required to state that
-    "The Graphics Interchange Format(c) is the Copyright property of
-    CompuServe Incorporated.  GIF(sm) is a Service Mark property of
-    CompuServe Incorporated."
-
 
 REFERENCES
 ==========
@@ -179,8 +167,8 @@ We recommend reading one or more of these references before trying to
 understand the innards of the JPEG software.
 
 The best short technical introduction to the JPEG compression algorithm is
-        Wallace, Gregory K.  "The JPEG Still Picture Compression Standard",
+	Wallace, Gregory K.  "The JPEG Still Picture Compression Standard",
-        Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
+	Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
 (Adjacent articles in that issue discuss MPEG motion picture compression,
 applications of JPEG, and related topics.)  If you don't have the CACM issue
 handy, a PDF file containing a revised version of Wallace's article is
@@ -204,6 +192,14 @@ Image Data Compression Standard" by William B. Pennebaker and Joan L.
 Mitchell, published by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1.
 Price US$59.95, 638 pp.  The book includes the complete text of the ISO JPEG
 standards (DIS 10918-1 and draft DIS 10918-2).
+Although this is by far the most detailed and comprehensive exposition of
+JPEG publicly available, we point out that it is still missing an explanation
+of the most essential properties and algorithms of the underlying DCT
+technology.
+If you think that you know about DCT-based JPEG after reading this book,
+then you are in delusion.  The real fundamentals and corresponding potential
+of DCT-based JPEG are not publicly known so far, and that is the reason for
+all the mistaken developments taking place in the image coding domain.
 
 The original JPEG standard is divided into two parts, Part 1 being the actual
 specification, while Part 2 covers compliance testing methods.  Part 1 is
@@ -212,15 +208,24 @@ Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
 10918-1, ITU-T T.81.  Part 2 is titled "Digital Compression and Coding of
 Continuous-tone Still Images, Part 2: Compliance testing" and has document
 numbers ISO/IEC IS 10918-2, ITU-T T.83.
+IJG JPEG 8 introduced an implementation of the JPEG SmartScale extension
+which is specified in two documents:  A contributed document at ITU and ISO
+with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced
+Image Coding", April 2006, Geneva, Switzerland.  The latest version of this
+document is Revision 3.  And a contributed document ISO/IEC JTC1/SC29/WG1 N
+5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany.
+IJG JPEG 9 introduces a reversible color transform for improved lossless
+compression which is described in a contributed document ISO/IEC JTC1/SC29/
+WG1 N 6080 with title "JPEG 9 Lossless Coding", June/July 2012, Paris,
+France.
 
 The JPEG standard does not specify all details of an interchangeable file
-format.  For the omitted details, we follow the "JFIF" conventions, revision
+format.  For the omitted details we follow the "JFIF" conventions, version 2.
-1.02.  JFIF version 1 has been adopted as ISO/IEC 10918-5 (05/2013) and
+JFIF version 1 has been adopted as Recommendation ITU-T T.871 (05/2011) :
-Recommendation ITU-T T.871 (05/2011): Information technology - Digital
+Information technology - Digital compression and coding of continuous-tone
-compression and coding of continuous-tone still images: JPEG File Interchange
+still images: JPEG File Interchange Format (JFIF).  It is available as a
-Format (JFIF).  It is available as a free download in PDF file format from
+free download in PDF file format from http://www.itu.int/rec/T-REC-T.871.
-https://www.iso.org/standard/54989.html and http://www.itu.int/rec/T-REC-T.871.
+A PDF file of the older JFIF document is available at
-A PDF file of the older JFIF 1.02 specification is available at
 http://www.w3.org/Graphics/JPEG/jfif3.pdf.
 
 The TIFF 6.0 file format specification can be obtained by FTP from
@@ -240,7 +245,9 @@ ARCHIVE LOCATIONS
 
 The "official" archive site for this software is www.ijg.org.
 The most recent released version can always be found there in
-directory "files".
+directory "files".  This particular version will be archived as
+http://www.ijg.org/files/jpegsrc.v9c.tar.gz, and in Windows-compatible
+"zip" archive format as http://www.ijg.org/files/jpegsr9c.zip.
 
 The JPEG FAQ (Frequently Asked Questions) article is a source of some
 general information about JPEG.
@@ -249,29 +256,123 @@ and other news.answers archive sites, including the official news.answers
 archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/.
 If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu
 with body
-        send usenet/news.answers/jpeg-faq/part1
+	send usenet/news.answers/jpeg-faq/part1
-        send usenet/news.answers/jpeg-faq/part2
+	send usenet/news.answers/jpeg-faq/part2
 
 
-FILE FORMAT COMPATIBILITY
+ACKNOWLEDGMENTS
-=========================
+===============
 
-This software implements ITU T.81 | ISO/IEC 10918 with some extensions from
+Thank to Juergen Bruder for providing me with a copy of the common DCT
-ITU T.871 | ISO/IEC 10918-5 (JPEG File Interchange Format-- see REFERENCES).
+algorithm article, only to find out that I had come to the same result
-Informally, the term "JPEG image" or "JPEG file" most often refers to JFIF or
+in a more direct and comprehensible way with a more generative approach.
-a subset thereof, but there are other formats containing the name "JPEG" that
-are incompatible with the DCT-based JPEG standard or with JFIF (for instance,
-JPEG 2000 and JPEG XR).  This software therefore does not support these
-formats.  Indeed, one of the original reasons for developing this free software
-was to help force convergence on a common, interoperable format standard for
-JPEG files.
 
-JFIF is a minimal or "low end" representation.  TIFF/JPEG (TIFF revision 6.0 as
+Thank to Istvan Sebestyen and Joan L. Mitchell for inviting me to the
-modified by TIFF Technical Note #2) can be used for "high end" applications
+ITU JPEG (Study Group 16) meeting in Geneva, Switzerland.
-that need to record a lot of additional data about an image.
+
+Thank to Thomas Wiegand and Gary Sullivan for inviting me to the
+Joint Video Team (MPEG & ITU) meeting in Geneva, Switzerland.
+
+Thank to Thomas Richter and Daniel Lee for inviting me to the
+ISO/IEC JTC1/SC29/WG1 (previously known as JPEG, together with ITU-T SG16)
+meeting in Berlin, Germany.
+
+Thank to John Korejwa and Massimo Ballerini for inviting me to
+fruitful consultations in Boston, MA and Milan, Italy.
+
+Thank to Hendrik Elstner, Roland Fassauer, Simone Zuck, Guenther
+Maier-Gerber, Walter Stoeber, Fred Schmitz, and Norbert Braunagel
+for corresponding business development.
+
+Thank to Nico Zschach and Dirk Stelling of the technical support team
+at the Digital Images company in Halle for providing me with extra
+equipment for configuration tests.
+
+Thank to Richard F. Lyon (then of Foveon Inc.) for fruitful
+communication about JPEG configuration in Sigma Photo Pro software.
+
+Thank to Andrew Finkenstadt for hosting the ijg.org site.
+
+Thank to Thomas G. Lane for the original design and development of
+this singular software package.
+
+Thank to Lars Goehler, Andreas Heinecke, Sebastian Fuss, Yvonne Roebert,
+Andrej Werner, and Ulf-Dietrich Braumann for support and public relations.
+
+
+FILE FORMAT WARS
+================
+
+The ISO/IEC JTC1/SC29/WG1 standards committee (previously known as JPEG,
+together with ITU-T SG16) currently promotes different formats containing
+the name "JPEG" which is misleading because these formats are incompatible
+with original DCT-based JPEG and are based on faulty technologies.
+IJG therefore does not and will not support such momentary mistakes
+(see REFERENCES).
+There exist also distributions under the name "OpenJPEG" promoting such
+kind of formats which is misleading because they don't support original
+JPEG images.
+We have no sympathy for the promotion of inferior formats.  Indeed, one of
+the original reasons for developing this free software was to help force
+convergence on common, interoperable format standards for JPEG files.
+Don't use an incompatible file format!
+(In any case, our decoder will remain capable of reading existing JPEG
+image files indefinitely.)
+
+The ISO committee pretends to be "responsible for the popular JPEG" in their
+public reports which is not true because they don't respond to actual
+requirements for the maintenance of the original JPEG specification.
+Furthermore, the ISO committee pretends to "ensure interoperability" with
+their standards which is not true because their "standards" support only
+application-specific and proprietary use cases and contain mathematically
+incorrect code.
+
+There are currently different distributions in circulation containing the
+name "libjpeg" which is misleading because they don't have the features and
+are incompatible with formats supported by actual IJG libjpeg distributions.
+One of those fakes is released by members of the ISO committee and just uses
+the name of libjpeg for misdirection of people, similar to the abuse of the
+name JPEG as described above, while having nothing in common with actual IJG
+libjpeg distributions and containing mathematically incorrect code.
+The other one claims to be a "derivative" or "fork" of the original libjpeg,
+but violates the license conditions as described under LEGAL ISSUES above
+and violates basic C programming properties.
+We have no sympathy for the release of misleading, incorrect and illegal
+distributions derived from obsolete code bases.
+Don't use an obsolete code base!
+
+According to the UCC (Uniform Commercial Code) law, IJG has the lawful and
+legal right to foreclose on certain standardization bodies and other
+institutions or corporations that knowingly perform substantial and
+systematic deceptive acts and practices, fraud, theft, and damaging of the
+value of the people of this planet without their knowing, willing and
+intentional consent.
+The titles, ownership, and rights of these institutions and all their assets
+are now duly secured and held in trust for the free people of this planet.
+People of the planet, on every country, may have a financial interest in
+the assets of these former principals, agents, and beneficiaries of the
+foreclosed institutions and corporations.
+IJG asserts what is: that each man, woman, and child has unalienable value
+and rights granted and deposited in them by the Creator and not any one of
+the people is subordinate to any artificial principality, corporate fiction
+or the special interest of another without their appropriate knowing,
+willing and intentional consent made by contract or accommodation agreement.
+IJG expresses that which already was.
+The people have already determined and demanded that public administration
+entities, national governments, and their supporting judicial systems must
+be fully transparent, accountable, and liable.
+IJG has secured the value for all concerned free people of the planet.
+
+A partial list of foreclosed institutions and corporations ("Hall of Shame")
+is currently prepared and will be published later.
 
 
 TO DO
 =====
 
+Version 9 is the second release of a new generation JPEG standard
+to overcome the limitations of the original JPEG specification,
+and is the first true source reference JPEG codec.
+More features are being prepared for coming releases...
+
 Please send bug reports, offers of help, etc. to jpeg-info@jpegclub.org.

README.md

@@ -1,356 +0,0 @@
-Background
-==========
-
-libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
-AVX2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression
-on x86, x86-64, ARM, and PowerPC systems, as well as progressive JPEG
-compression on x86 and x86-64 systems.  On such systems, libjpeg-turbo is
-generally 2-6x as fast as libjpeg, all else being equal.  On other types of
-systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by
-virtue of its highly-optimized Huffman coding routines.  In many cases, the
-performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs.
-
-libjpeg-turbo implements both the traditional libjpeg API as well as the less
-powerful but more straightforward TurboJPEG API.  libjpeg-turbo also features
-colorspace extensions that allow it to compress from/decompress to 32-bit and
-big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java
-interface.
-
-libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated
-derivative of libjpeg v6b developed by Miyasaka Masaru.  The TigerVNC and
-VirtualGL projects made numerous enhancements to the codec in 2009, and in
-early 2010, libjpeg-turbo spun off into an independent project, with the goal
-of making high-speed JPEG compression/decompression technology available to a
-broader range of users and developers.
-
-
-License
-=======
-
-libjpeg-turbo is covered by three compatible BSD-style open source licenses.
-Refer to [LICENSE.md](LICENSE.md) for a roll-up of license terms.
-
-
-Building libjpeg-turbo
-======================
-
-Refer to [BUILDING.md](BUILDING.md) for complete instructions.
-
-
-Using libjpeg-turbo
-===================
-
-libjpeg-turbo includes two APIs that can be used to compress and decompress
-JPEG images:
-
-- **TurboJPEG API**<br>
-  This API provides an easy-to-use interface for compressing and decompressing
-  JPEG images in memory.  It also provides some functionality that would not be
-  straightforward to achieve using the underlying libjpeg API, such as
-  generating planar YUV images and performing multiple simultaneous lossless
-  transforms on an image.  The Java interface for libjpeg-turbo is written on
-  top of the TurboJPEG API.  The TurboJPEG API is recommended for first-time
-  users of libjpeg-turbo.  Refer to [tjexample.c](tjexample.c) and
-  [TJExample.java](java/TJExample.java) for examples of its usage and to
-  <http://libjpeg-turbo.org/Documentation/Documentation> for API documentation.
-
-- **libjpeg API**<br>
-  This is the de facto industry-standard API for compressing and decompressing
-  JPEG images.  It is more difficult to use than the TurboJPEG API but also
-  more powerful.  The libjpeg API implementation in libjpeg-turbo is both
-  API/ABI-compatible and mathematically compatible with libjpeg v6b.  It can
-  also optionally be configured to be API/ABI-compatible with libjpeg v7 and v8
-  (see below.)  Refer to [cjpeg.c](cjpeg.c) and [djpeg.c](djpeg.c) for examples
-  of its usage and to [libjpeg.txt](libjpeg.txt) for API documentation.
-
-There is no significant performance advantage to either API when both are used
-to perform similar operations.
-
-Colorspace Extensions
----------------------
-
-libjpeg-turbo includes extensions that allow JPEG images to be compressed
-directly from (and decompressed directly to) buffers that use BGR, BGRX,
-RGBX, XBGR, and XRGB pixel ordering.  This is implemented with ten new
-colorspace constants:
-
-    JCS_EXT_RGB   /* red/green/blue */
-    JCS_EXT_RGBX  /* red/green/blue/x */
-    JCS_EXT_BGR   /* blue/green/red */
-    JCS_EXT_BGRX  /* blue/green/red/x */
-    JCS_EXT_XBGR  /* x/blue/green/red */
-    JCS_EXT_XRGB  /* x/red/green/blue */
-    JCS_EXT_RGBA  /* red/green/blue/alpha */
-    JCS_EXT_BGRA  /* blue/green/red/alpha */
-    JCS_EXT_ABGR  /* alpha/blue/green/red */
-    JCS_EXT_ARGB  /* alpha/red/green/blue */
-
-Setting `cinfo.in_color_space` (compression) or `cinfo.out_color_space`
-(decompression) to one of these values will cause libjpeg-turbo to read the
-red, green, and blue values from (or write them to) the appropriate position in
-the pixel when compressing from/decompressing to an RGB buffer.
-
-Your application can check for the existence of these extensions at compile
-time with:
-
-    #ifdef JCS_EXTENSIONS
-
-At run time, attempting to use these extensions with a libjpeg implementation
-that does not support them will result in a "Bogus input colorspace" error.
-Applications can trap this error in order to test whether run-time support is
-available for the colorspace extensions.
-
-When using the RGBX, BGRX, XBGR, and XRGB colorspaces during decompression, the
-X byte is undefined, and in order to ensure the best performance, libjpeg-turbo
-can set that byte to whatever value it wishes.  If an application expects the X
-byte to be used as an alpha channel, then it should specify `JCS_EXT_RGBA`,
-`JCS_EXT_BGRA`, `JCS_EXT_ABGR`, or `JCS_EXT_ARGB`.  When these colorspace
-constants are used, the X byte is guaranteed to be 0xFF, which is interpreted
-as opaque.
-
-Your application can check for the existence of the alpha channel colorspace
-extensions at compile time with:
-
-    #ifdef JCS_ALPHA_EXTENSIONS
-
-[jcstest.c](jcstest.c), located in the libjpeg-turbo source tree, demonstrates
-how to check for the existence of the colorspace extensions at compile time and
-run time.
-
-libjpeg v7 and v8 API/ABI Emulation
------------------------------------
-
-With libjpeg v7 and v8, new features were added that necessitated extending the
-compression and decompression structures.  Unfortunately, due to the exposed
-nature of those structures, extending them also necessitated breaking backward
-ABI compatibility with previous libjpeg releases.  Thus, programs that were
-built to use libjpeg v7 or v8 did not work with libjpeg-turbo, since it is
-based on the libjpeg v6b code base.  Although libjpeg v7 and v8 are not
-as widely used as v6b, enough programs (including a few Linux distros) made
-the switch that there was a demand to emulate the libjpeg v7 and v8 ABIs
-in libjpeg-turbo.  It should be noted, however, that this feature was added
-primarily so that applications that had already been compiled to use libjpeg
-v7+ could take advantage of accelerated baseline JPEG encoding/decoding
-without recompiling.  libjpeg-turbo does not claim to support all of the
-libjpeg v7+ features, nor to produce identical output to libjpeg v7+ in all
-cases (see below.)
-
-By passing an argument of `-DWITH_JPEG7=1` or `-DWITH_JPEG8=1` to `cmake`, you
-can build a version of libjpeg-turbo that emulates the libjpeg v7 or v8 ABI, so
-that programs that are built against libjpeg v7 or v8 can be run with
-libjpeg-turbo.  The following section describes which libjpeg v7+ features are
-supported and which aren't.
-
-### Support for libjpeg v7 and v8 Features
-
-#### Fully supported
-
-- **libjpeg: IDCT scaling extensions in decompressor**<br>
-  libjpeg-turbo supports IDCT scaling with scaling factors of 1/8, 1/4, 3/8,
-  1/2, 5/8, 3/4, 7/8, 9/8, 5/4, 11/8, 3/2, 13/8, 7/4, 15/8, and 2/1 (only 1/4
-  and 1/2 are SIMD-accelerated.)
-
-- **libjpeg: Arithmetic coding**
-
-- **libjpeg: In-memory source and destination managers**<br>
-  See notes below.
-
-- **cjpeg: Separate quality settings for luminance and chrominance**<br>
-  Note that the libpjeg v7+ API was extended to accommodate this feature only
-  for convenience purposes.  It has always been possible to implement this
-  feature with libjpeg v6b (see rdswitch.c for an example.)
-
-- **cjpeg: 32-bit BMP support**
-
-- **cjpeg: `-rgb` option**
-
-- **jpegtran: Lossless cropping**
-
-- **jpegtran: `-perfect` option**
-
-- **jpegtran: Forcing width/height when performing lossless crop**
-
-- **rdjpgcom: `-raw` option**
-
-- **rdjpgcom: Locale awareness**
-
-
-#### Not supported
-
-NOTE:  As of this writing, extensive research has been conducted into the
-usefulness of DCT scaling as a means of data reduction and SmartScale as a
-means of quality improvement.  The reader is invited to peruse the research at
-<http://www.libjpeg-turbo.org/About/SmartScale> and draw his/her own conclusions,
-but it is the general belief of our project that these features have not
-demonstrated sufficient usefulness to justify inclusion in libjpeg-turbo.
-
-- **libjpeg: DCT scaling in compressor**<br>
-  `cinfo.scale_num` and `cinfo.scale_denom` are silently ignored.
-  There is no technical reason why DCT scaling could not be supported when
-  emulating the libjpeg v7+ API/ABI, but without the SmartScale extension (see
-  below), only scaling factors of 1/2, 8/15, 4/7, 8/13, 2/3, 8/11, 4/5, and
-  8/9 would be available, which is of limited usefulness.
-
-- **libjpeg: SmartScale**<br>
-  `cinfo.block_size` is silently ignored.
-  SmartScale is an extension to the JPEG format that allows for DCT block
-  sizes other than 8x8.  Providing support for this new format would be
-  feasible (particularly without full acceleration.)  However, until/unless
-  the format becomes either an official industry standard or, at minimum, an
-  accepted solution in the community, we are hesitant to implement it, as
-  there is no sense of whether or how it might change in the future.  It is
-  our belief that SmartScale has not demonstrated sufficient usefulness as a
-  lossless format nor as a means of quality enhancement, and thus our primary
-  interest in providing this feature would be as a means of supporting
-  additional DCT scaling factors.
-
-- **libjpeg: Fancy downsampling in compressor**<br>
-  `cinfo.do_fancy_downsampling` is silently ignored.
-  This requires the DCT scaling feature, which is not supported.
-
-- **jpegtran: Scaling**<br>
-  This requires both the DCT scaling and SmartScale features, which are not
-  supported.
-
-- **Lossless RGB JPEG files**<br>
-  This requires the SmartScale feature, which is not supported.
-
-### What About libjpeg v9?
-
-libjpeg v9 introduced yet another field to the JPEG compression structure
-(`color_transform`), thus making the ABI backward incompatible with that of
-libjpeg v8.  This new field was introduced solely for the purpose of supporting
-lossless SmartScale encoding.  Furthermore, there was actually no reason to
-extend the API in this manner, as the color transform could have just as easily
-been activated by way of a new JPEG colorspace constant, thus preserving
-backward ABI compatibility.
-
-Our research (see link above) has shown that lossless SmartScale does not
-generally accomplish anything that can't already be accomplished better with
-existing, standard lossless formats.  Therefore, at this time it is our belief
-that there is not sufficient technical justification for software projects to
-upgrade from libjpeg v8 to libjpeg v9, and thus there is not sufficient
-technical justification for us to emulate the libjpeg v9 ABI.
-
-In-Memory Source/Destination Managers
--------------------------------------
-
-By default, libjpeg-turbo 1.3 and later includes the `jpeg_mem_src()` and
-`jpeg_mem_dest()` functions, even when not emulating the libjpeg v8 API/ABI.
-Previously, it was necessary to build libjpeg-turbo from source with libjpeg v8
-API/ABI emulation in order to use the in-memory source/destination managers,
-but several projects requested that those functions be included when emulating
-the libjpeg v6b API/ABI as well.  This allows the use of those functions by
-programs that need them, without breaking ABI compatibility for programs that
-don't, and it allows those functions to be provided in the "official"
-libjpeg-turbo binaries.
-
-Those who are concerned about maintaining strict conformance with the libjpeg
-v6b or v7 API can pass an argument of `-DWITH_MEM_SRCDST=0` to `cmake` prior to
-building libjpeg-turbo.  This will restore the pre-1.3 behavior, in which
-`jpeg_mem_src()` and `jpeg_mem_dest()` are only included when emulating the
-libjpeg v8 API/ABI.
-
-On Un*x systems, including the in-memory source/destination managers changes
-the dynamic library version from 62.1.0 to 62.2.0 if using libjpeg v6b API/ABI
-emulation and from 7.1.0 to 7.2.0 if using libjpeg v7 API/ABI emulation.
-
-Note that, on most Un*x systems, the dynamic linker will not look for a
-function in a library until that function is actually used.  Thus, if a program
-is built against libjpeg-turbo 1.3+ and uses `jpeg_mem_src()` or
-`jpeg_mem_dest()`, that program will not fail if run against an older version
-of libjpeg-turbo or against libjpeg v7- until the program actually tries to
-call `jpeg_mem_src()` or `jpeg_mem_dest()`.  Such is not the case on Windows.
-If a program is built against the libjpeg-turbo 1.3+ DLL and uses
-`jpeg_mem_src()` or `jpeg_mem_dest()`, then it must use the libjpeg-turbo 1.3+
-DLL at run time.
-
-Both cjpeg and djpeg have been extended to allow testing the in-memory
-source/destination manager functions.  See their respective man pages for more
-details.
-
-
-Mathematical Compatibility
-==========================
-
-For the most part, libjpeg-turbo should produce identical output to libjpeg
-v6b.  The one exception to this is when using the floating point DCT/IDCT, in
-which case the outputs of libjpeg v6b and libjpeg-turbo can differ for the
-following reasons:
-
-- The SSE/SSE2 floating point DCT implementation in libjpeg-turbo is ever so
-  slightly more accurate than the implementation in libjpeg v6b, but not by
-  any amount perceptible to human vision (generally in the range of 0.01 to
-  0.08 dB gain in PNSR.)
-
-- When not using the SIMD extensions, libjpeg-turbo uses the more accurate
-  (and slightly faster) floating point IDCT algorithm introduced in libjpeg
-  v8a as opposed to the algorithm used in libjpeg v6b.  It should be noted,
-  however, that this algorithm basically brings the accuracy of the floating
-  point IDCT in line with the accuracy of the slow integer IDCT.  The floating
-  point DCT/IDCT algorithms are mainly a legacy feature, and they do not
-  produce significantly more accuracy than the slow integer algorithms (to put
-  numbers on this, the typical difference in PNSR between the two algorithms
-  is less than 0.10 dB, whereas changing the quality level by 1 in the upper
-  range of the quality scale is typically more like a 1.0 dB difference.)
-
-- If the floating point algorithms in libjpeg-turbo are not implemented using
-  SIMD instructions on a particular platform, then the accuracy of the
-  floating point DCT/IDCT can depend on the compiler settings.
-
-While libjpeg-turbo does emulate the libjpeg v8 API/ABI, under the hood it is
-still using the same algorithms as libjpeg v6b, so there are several specific
-cases in which libjpeg-turbo cannot be expected to produce the same output as
-libjpeg v8:
-
-- When decompressing using scaling factors of 1/2 and 1/4, because libjpeg v8
-  implements those scaling algorithms differently than libjpeg v6b does, and
-  libjpeg-turbo's SIMD extensions are based on the libjpeg v6b behavior.
-
-- When using chrominance subsampling, because libjpeg v8 implements this
-  with its DCT/IDCT scaling algorithms rather than with a separate
-  downsampling/upsampling algorithm.  In our testing, the subsampled/upsampled
-  output of libjpeg v8 is less accurate than that of libjpeg v6b for this
-  reason.
-
-- When decompressing using a scaling factor > 1 and merged (AKA "non-fancy" or
-  "non-smooth") chrominance upsampling, because libjpeg v8 does not support
-  merged upsampling with scaling factors > 1.
-
-
-Performance Pitfalls
-====================
-
-Restart Markers
----------------
-
-The optimized Huffman decoder in libjpeg-turbo does not handle restart markers
-in a way that makes the rest of the libjpeg infrastructure happy, so it is
-necessary to use the slow Huffman decoder when decompressing a JPEG image that
-has restart markers.  This can cause the decompression performance to drop by
-as much as 20%, but the performance will still be much greater than that of
-libjpeg.  Many consumer packages, such as PhotoShop, use restart markers when
-generating JPEG images, so images generated by those programs will experience
-this issue.
-
-Fast Integer Forward DCT at High Quality Levels
------------------------------------------------
-
-The algorithm used by the SIMD-accelerated quantization function cannot produce
-correct results whenever the fast integer forward DCT is used along with a JPEG
-quality of 98-100.  Thus, libjpeg-turbo must use the non-SIMD quantization
-function in those cases.  This causes performance to drop by as much as 40%.
-It is therefore strongly advised that you use the slow integer forward DCT
-whenever encoding images with a JPEG quality of 98 or higher.
-
-
-Memory Debugger Pitfalls
-========================
-
-Valgrind and Memory Sanitizer (MSan) can generate false positives
-(specifically, incorrect reports of uninitialized memory accesses) when used
-with libjpeg-turbo's SIMD extensions.  It is generally recommended that the
-SIMD extensions be disabled, either by passing an argument of `-DWITH_SIMD=0`
-to `cmake` when configuring the build or by setting the environment variable
-`JSIMD_FORCENONE` to `1` at run time, when testing libjpeg-turbo with Valgrind,
-MSan, or other memory debuggers.

appveyor.yml

@@ -1,60 +0,0 @@
-install:
-  - cmd: >-
-      if not exist c:\installers mkdir c:\installers
-
-      mkdir c:\temp
-
-      if not exist c:\installers\nasm-2.10.01-win32.zip curl -fSL -o c:\installers\nasm-2.10.01-win32.zip http://www.nasm.us/pub/nasm/releasebuilds/2.10.01/win32/nasm-2.10.01-win32.zip
-
-      7z x c:\installers\nasm-2.10.01-win32.zip -oc:\ > c:\installers\nasm.install.log
-
-      set INCLUDE=c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include;c:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\include
-
-      set LIB=c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64;c:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\lib\x64
-
-      set PATH=c:\nasm-2.10.01;c:\Program Files (x86)\NSIS;c:\msys64\mingw32\bin;c:\msys64\usr\bin;c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64;c:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE;c:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\bin\x64;c:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\bin;%PATH%
-
-      set MSYSTEM=MINGW32
-
-      bash -c "pacman --noconfirm -S zip"
-
-      mklink /d "%ProgramData%\Oracle\Java32" "c:\Program Files (x86)\Java\jdk1.6.0"
-
-      git clone --depth=1 https://github.com/libjpeg-turbo/buildscripts.git -b %APPVEYOR_REPO_BRANCH% c:/buildscripts
-
-cache:
-  - c:\installers\nasm-2.10.01-win32.zip -> appveyor.yml
-
-build_script:
-  - cmd: >-
-      for /f %%i in ('"cygpath %CD%"') do set MINGWPATH=%%i
-
-      bash c:/buildscripts/buildljt -d %MINGWPATH% -b /c/ljt.nightly -v
-
-      move c:\ljt.nightly\files\*.tar.gz .
-
-      move c:\ljt.nightly\files\*.exe .
-
-      move c:\ljt.nightly\files\*.zip .
-
-      move c:\ljt.nightly\log-windows.txt .
-
-artifacts:
-  - path: '*.tar.gz'
-    name: Source tarball
-
-  - path: '*-gcc*.exe'
-    name: SDK for MinGW
-
-  - path: '*-vc*.exe'
-    name: SDK for Visual C++
-
-  - path: '*.zip'
-    name: Windows JNI JARs
-
-  - path: 'log-windows.txt'
-    name: Build log
-
-test: off
-
-deploy: off

ar-lib

@@ -0,0 +1,270 @@
+#! /bin/sh
+# Wrapper for Microsoft lib.exe
+
+me=ar-lib
+scriptversion=2012-03-01.08; # UTC
+
+# Copyright (C) 2010-2017 Free Software Foundation, Inc.
+# Written by Peter Rosin <peda@lysator.liu.se>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+
+# func_error message
+func_error ()
+{
+  echo "$me: $1" 1>&2
+  exit 1
+}
+
+file_conv=
+
+# func_file_conv build_file
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv in
+	mingw)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_at_file at_file operation archive
+# Iterate over all members in AT_FILE performing OPERATION on ARCHIVE
+# for each of them.
+# When interpreting the content of the @FILE, do NOT use func_file_conv,
+# since the user would need to supply preconverted file names to
+# binutils ar, at least for MinGW.
+func_at_file ()
+{
+  operation=$2
+  archive=$3
+  at_file_contents=`cat "$1"`
+  eval set x "$at_file_contents"
+  shift
+
+  for member
+  do
+    $AR -NOLOGO $operation:"$member" "$archive" || exit $?
+  done
+}
+
+case $1 in
+  '')
+     func_error "no command.  Try '$0 --help' for more information."
+     ;;
+  -h | --h*)
+    cat <<EOF
+Usage: $me [--help] [--version] PROGRAM ACTION ARCHIVE [MEMBER...]
+
+Members may be specified in a file named with @FILE.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "$me, version $scriptversion"
+    exit $?
+    ;;
+esac
+
+if test $# -lt 3; then
+  func_error "you must specify a program, an action and an archive"
+fi
+
+AR=$1
+shift
+while :
+do
+  if test $# -lt 2; then
+    func_error "you must specify a program, an action and an archive"
+  fi
+  case $1 in
+    -lib | -LIB \
+    | -ltcg | -LTCG \
+    | -machine* | -MACHINE* \
+    | -subsystem* | -SUBSYSTEM* \
+    | -verbose | -VERBOSE \
+    | -wx* | -WX* )
+      AR="$AR $1"
+      shift
+      ;;
+    *)
+      action=$1
+      shift
+      break
+      ;;
+  esac
+done
+orig_archive=$1
+shift
+func_file_conv "$orig_archive"
+archive=$file
+
+# strip leading dash in $action
+action=${action#-}
+
+delete=
+extract=
+list=
+quick=
+replace=
+index=
+create=
+
+while test -n "$action"
+do
+  case $action in
+    d*) delete=yes  ;;
+    x*) extract=yes ;;
+    t*) list=yes    ;;
+    q*) quick=yes   ;;
+    r*) replace=yes ;;
+    s*) index=yes   ;;
+    S*)             ;; # the index is always updated implicitly
+    c*) create=yes  ;;
+    u*)             ;; # TODO: don't ignore the update modifier
+    v*)             ;; # TODO: don't ignore the verbose modifier
+    *)
+      func_error "unknown action specified"
+      ;;
+  esac
+  action=${action#?}
+done
+
+case $delete$extract$list$quick$replace,$index in
+  yes,* | ,yes)
+    ;;
+  yesyes*)
+    func_error "more than one action specified"
+    ;;
+  *)
+    func_error "no action specified"
+    ;;
+esac
+
+if test -n "$delete"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  for member
+  do
+    case $1 in
+      @*)
+        func_at_file "${1#@}" -REMOVE "$archive"
+        ;;
+      *)
+        func_file_conv "$1"
+        $AR -NOLOGO -REMOVE:"$file" "$archive" || exit $?
+        ;;
+    esac
+  done
+
+elif test -n "$extract"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  if test $# -gt 0; then
+    for member
+    do
+      case $1 in
+        @*)
+          func_at_file "${1#@}" -EXTRACT "$archive"
+          ;;
+        *)
+          func_file_conv "$1"
+          $AR -NOLOGO -EXTRACT:"$file" "$archive" || exit $?
+          ;;
+      esac
+    done
+  else
+    $AR -NOLOGO -LIST "$archive" | sed -e 's/\\/\\\\/g' | while read member
+    do
+      $AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
+    done
+  fi
+
+elif test -n "$quick$replace"; then
+  if test ! -f "$orig_archive"; then
+    if test -z "$create"; then
+      echo "$me: creating $orig_archive"
+    fi
+    orig_archive=
+  else
+    orig_archive=$archive
+  fi
+
+  for member
+  do
+    case $1 in
+    @*)
+      func_file_conv "${1#@}"
+      set x "$@" "@$file"
+      ;;
+    *)
+      func_file_conv "$1"
+      set x "$@" "$file"
+      ;;
+    esac
+    shift
+    shift
+  done
+
+  if test -n "$orig_archive"; then
+    $AR -NOLOGO -OUT:"$archive" "$orig_archive" "$@" || exit $?
+  else
+    $AR -NOLOGO -OUT:"$archive" "$@" || exit $?
+  fi
+
+elif test -n "$list"; then
+  if test ! -f "$orig_archive"; then
+    func_error "archive not found"
+  fi
+  $AR -NOLOGO -LIST "$archive" || exit $?
+fi

cderror.h

@@ -4,8 +4,7 @@
  * Copyright (C) 1994-1997, Thomas G. Lane.
  * Modified 2009-2017 by Guido Vollbeding.
  * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README.ijg
+ * For conditions of distribution and use, see the accompanying README file.
- * file.
  *
  * This file defines the error and message codes for the cjpeg/djpeg
  * applications.  These strings are not needed as part of the JPEG library
@@ -26,7 +25,7 @@
 #define JMAKE_ENUM_LIST
 #else
 /* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */
-#define JMESSAGE(code, string)
+#define JMESSAGE(code,string)
 #endif /* CDERROR_H */
 #endif /* JMESSAGE */
 
@@ -34,25 +33,24 @@
 
 typedef enum {
 
-#define JMESSAGE(code, string)  code,
+#define JMESSAGE(code,string)	code ,
 
 #endif /* JMAKE_ENUM_LIST */
 
-JMESSAGE(JMSG_FIRSTADDONCODE = 1000, NULL) /* Must be first entry! */
+JMESSAGE(JMSG_FIRSTADDONCODE=1000, NULL) /* Must be first entry! */
 
 #ifdef BMP_SUPPORTED
 JMESSAGE(JERR_BMP_BADCMAP, "Unsupported BMP colormap format")
-JMESSAGE(JERR_BMP_BADDEPTH, "Only 8- and 24-bit BMP files are supported")
+JMESSAGE(JERR_BMP_BADDEPTH, "Only 8-, 24-, and 32-bit BMP files are supported")
 JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length")
 JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1")
 JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB")
 JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported")
-JMESSAGE(JERR_BMP_EMPTY, "Empty BMP image")
 JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM")
 JMESSAGE(JERR_BMP_OUTOFRANGE, "Numeric value out of range in BMP file")
-JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image")
+JMESSAGE(JTRC_BMP, "%ux%u %d-bit BMP image")
 JMESSAGE(JTRC_BMP_MAPPED, "%ux%u 8-bit colormapped BMP image")
-JMESSAGE(JTRC_BMP_OS2, "%ux%u 24-bit OS2 BMP image")
+JMESSAGE(JTRC_BMP_OS2, "%ux%u %d-bit OS2 BMP image")
 JMESSAGE(JTRC_BMP_OS2_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image")
 #endif /* BMP_SUPPORTED */
 
@@ -64,7 +62,7 @@ JMESSAGE(JERR_GIF_IMAGENOTFOUND, "Too few images in GIF file")
 JMESSAGE(JERR_GIF_NOT, "Not a GIF file")
 JMESSAGE(JTRC_GIF, "%ux%ux%d GIF image")
 JMESSAGE(JTRC_GIF_BADVERSION,
-         "Warning: unexpected GIF version number '%c%c%c'")
+	 "Warning: unexpected GIF version number '%c%c%c'")
 JMESSAGE(JTRC_GIF_EXTENSION, "Ignoring GIF extension block of type 0x%02x")
 JMESSAGE(JTRC_GIF_NONSQUARE, "Caution: nonsquare pixels in input")
 JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file")
@@ -113,13 +111,13 @@ JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled")
 #endif /* TARGA_SUPPORTED */
 
 JMESSAGE(JERR_BAD_CMAP_FILE,
-         "Color map file is invalid or of unsupported format")
+	 "Color map file is invalid or of unsupported format")
 JMESSAGE(JERR_TOO_MANY_COLORS,
-         "Output file format cannot handle %d colormap entries")
+	 "Output file format cannot handle %d colormap entries")
 JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed")
 #ifdef TARGA_SUPPORTED
 JMESSAGE(JERR_UNKNOWN_FORMAT,
-         "Unrecognized input file format --- perhaps you need -targa")
+	 "Unrecognized input file format --- perhaps you need -targa")
 #else
 JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format")
 #endif

cdjpeg.c

@@ -1,23 +1,60 @@
 /*
  * cdjpeg.c
  *
- * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * It was modified by The libjpeg-turbo Project to include only code relevant
+ * This file is part of the Independent JPEG Group's software.
- * to libjpeg-turbo.
+ * For conditions of distribution and use, see the accompanying README file.
- * For conditions of distribution and use, see the accompanying README.ijg
- * file.
  *
  * This file contains common support routines used by the IJG application
  * programs (cjpeg, djpeg, jpegtran).
  */
 
-#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
-#include <ctype.h>              /* to declare isupper(), tolower() */
+#include <ctype.h>		/* to declare isupper(), tolower() */
+#ifdef NEED_SIGNAL_CATCHER
+#include <signal.h>		/* to declare signal() */
+#endif
 #ifdef USE_SETMODE
-#include <fcntl.h>              /* to declare setmode()'s parameter macros */
+#include <fcntl.h>		/* to declare setmode()'s parameter macros */
 /* If you have setmode() but not <io.h>, just delete this line: */
-#include <io.h>                 /* to declare setmode() */
+#include <io.h>			/* to declare setmode() */
+#endif
+
+
+/*
+ * Signal catcher to ensure that temporary files are removed before aborting.
+ * NB: for Amiga Manx C this is actually a global routine named _abort();
+ * we put "#define signal_catcher _abort" in jconfig.h.  Talk about bogus...
+ */
+
+#ifdef NEED_SIGNAL_CATCHER
+
+static j_common_ptr sig_cinfo;
+
+void				/* must be global for Manx C */
+signal_catcher (int signum)
+{
+  if (sig_cinfo != NULL) {
+    if (sig_cinfo->err != NULL) /* turn off trace output */
+      sig_cinfo->err->trace_level = 0;
+    jpeg_destroy(sig_cinfo);	/* clean up memory allocation & temp files */
+  }
+  exit(EXIT_FAILURE);
+}
+
+
+GLOBAL(void)
+enable_signal_catcher (j_common_ptr cinfo)
+{
+  sig_cinfo = cinfo;
+#ifdef SIGINT			/* not all systems have SIGINT */
+  signal(SIGINT, signal_catcher);
+#endif
+#ifdef SIGTERM			/* not all systems have SIGTERM */
+  signal(SIGTERM, signal_catcher);
+#endif
+}
+
 #endif
 
 
@@ -28,19 +65,18 @@
 #ifdef PROGRESS_REPORT
 
 METHODDEF(void)
-progress_monitor(j_common_ptr cinfo)
+progress_monitor (j_common_ptr cinfo)
 {
-  cd_progress_ptr prog = (cd_progress_ptr)cinfo->progress;
+  cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
   int total_passes = prog->pub.total_passes + prog->total_extra_passes;
-  int percent_done =
+  int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
-    (int)(prog->pub.pass_counter * 100L / prog->pub.pass_limit);
 
   if (percent_done != prog->percent_done) {
     prog->percent_done = percent_done;
     if (total_passes > 1) {
       fprintf(stderr, "\rPass %d/%d: %3d%% ",
-              prog->pub.completed_passes + prog->completed_extra_passes + 1,
+	      prog->pub.completed_passes + prog->completed_extra_passes + 1,
-              total_passes, percent_done);
+	      total_passes, percent_done);
     } else {
       fprintf(stderr, "\r %3d%% ", percent_done);
     }
@@ -50,7 +86,7 @@ progress_monitor(j_common_ptr cinfo)
 
 
 GLOBAL(void)
-start_progress_monitor(j_common_ptr cinfo, cd_progress_ptr progress)
+start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress)
 {
   /* Enable progress display, unless trace output is on */
   if (cinfo->err->trace_level == 0) {
@@ -64,7 +100,7 @@ start_progress_monitor(j_common_ptr cinfo, cd_progress_ptr progress)
 
 
 GLOBAL(void)
-end_progress_monitor(j_common_ptr cinfo)
+end_progress_monitor (j_common_ptr cinfo)
 {
   /* Clear away progress display */
   if (cinfo->err->trace_level == 0) {
@@ -83,24 +119,24 @@ end_progress_monitor(j_common_ptr cinfo)
  */
 
 GLOBAL(boolean)
-keymatch(char *arg, const char *keyword, int minchars)
+keymatch (char * arg, const char * keyword, int minchars)
 {
   register int ca, ck;
   register int nmatched = 0;
 
   while ((ca = *arg++) != '\0') {
     if ((ck = *keyword++) == '\0')
-      return FALSE;             /* arg longer than keyword, no good */
+      return FALSE;		/* arg longer than keyword, no good */
-    if (isupper(ca))            /* force arg to lcase (assume ck is already) */
+    if (isupper(ca))		/* force arg to lcase (assume ck is already) */
       ca = tolower(ca);
     if (ca != ck)
-      return FALSE;             /* no good */
+      return FALSE;		/* no good */
-    nmatched++;                 /* count matched characters */
+    nmatched++;			/* count matched characters */
   }
   /* reached end of argument; fail if it's too short for unique abbrev */
   if (nmatched < minchars)
     return FALSE;
-  return TRUE;                  /* A-OK */
+  return TRUE;			/* A-OK */
 }
 
 
@@ -110,14 +146,14 @@ keymatch(char *arg, const char *keyword, int minchars)
  */
 
 GLOBAL(FILE *)
-read_stdin(void)
+read_stdin (void)
 {
-  FILE *input_file = stdin;
+  FILE * input_file = stdin;
 
-#ifdef USE_SETMODE              /* need to hack file mode? */
+#ifdef USE_SETMODE		/* need to hack file mode? */
   setmode(fileno(stdin), O_BINARY);
 #endif
-#ifdef USE_FDOPEN               /* need to re-open in binary mode? */
+#ifdef USE_FDOPEN		/* need to re-open in binary mode? */
   if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
     fprintf(stderr, "Cannot reopen stdin\n");
     exit(EXIT_FAILURE);
@@ -128,14 +164,14 @@ read_stdin(void)
 
 
 GLOBAL(FILE *)
-write_stdout(void)
+write_stdout (void)
 {
-  FILE *output_file = stdout;
+  FILE * output_file = stdout;
 
-#ifdef USE_SETMODE              /* need to hack file mode? */
+#ifdef USE_SETMODE		/* need to hack file mode? */
   setmode(fileno(stdout), O_BINARY);
 #endif
-#ifdef USE_FDOPEN               /* need to re-open in binary mode? */
+#ifdef USE_FDOPEN		/* need to re-open in binary mode? */
   if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
     fprintf(stderr, "Cannot reopen stdout\n");
     exit(EXIT_FAILURE);

cdjpeg.h

@@ -1,35 +1,35 @@
 /*
  * cdjpeg.h
  *
- * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1997, Thomas G. Lane.
- * libjpeg-turbo Modifications:
+ * This file is part of the Independent JPEG Group's software.
- * Copyright (C) 2017, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README file.
- * For conditions of distribution and use, see the accompanying README.ijg
- * file.
  *
  * This file contains common declarations for the sample applications
  * cjpeg and djpeg.  It is NOT used by the core JPEG library.
  */
 
-#define JPEG_CJPEG_DJPEG        /* define proper options in jconfig.h */
+#define JPEG_CJPEG_DJPEG	/* define proper options in jconfig.h */
-#define JPEG_INTERNAL_OPTIONS   /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
+#define JPEG_INTERNAL_OPTIONS	/* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jerror.h"             /* get library error codes too */
+#include "jerror.h"		/* get library error codes too */
-#include "cderror.h"            /* get application-specific error codes */
+#include "cderror.h"		/* get application-specific error codes */
 
 
 /*
  * Object interface for cjpeg's source file decoding modules
  */
 
-typedef struct cjpeg_source_struct *cjpeg_source_ptr;
+typedef struct cjpeg_source_struct * cjpeg_source_ptr;
 
 struct cjpeg_source_struct {
-  void (*start_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
+  JMETHOD(void, start_input, (j_compress_ptr cinfo,
-  JDIMENSION (*get_pixel_rows) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
+			      cjpeg_source_ptr sinfo));
-  void (*finish_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
+  JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
+				       cjpeg_source_ptr sinfo));
+  JMETHOD(void, finish_input, (j_compress_ptr cinfo,
+			       cjpeg_source_ptr sinfo));
 
   FILE *input_file;
 
@@ -42,29 +42,24 @@ struct cjpeg_source_struct {
  * Object interface for djpeg's output file encoding modules
  */
 
-typedef struct djpeg_dest_struct *djpeg_dest_ptr;
+typedef struct djpeg_dest_struct * djpeg_dest_ptr;
 
 struct djpeg_dest_struct {
   /* start_output is called after jpeg_start_decompress finishes.
    * The color map will be ready at this time, if one is needed.
    */
-  void (*start_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
+  JMETHOD(void, start_output, (j_decompress_ptr cinfo,
+			       djpeg_dest_ptr dinfo));
   /* Emit the specified number of pixel rows from the buffer. */
-  void (*put_pixel_rows) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
+  JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
-                          JDIMENSION rows_supplied);
+				 djpeg_dest_ptr dinfo,
+				 JDIMENSION rows_supplied));
   /* Finish up at the end of the image. */
-  void (*finish_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
+  JMETHOD(void, finish_output, (j_decompress_ptr cinfo,
-  /* Re-calculate buffer dimensions based on output dimensions (for use with
+				djpeg_dest_ptr dinfo));
-     partial image decompression.)  If this is NULL, then the output format
-     does not support partial image decompression (BMP and RLE, in particular,
-     cannot support partial decompression because they use an inversion buffer
-     to write the image in bottom-up order.) */
-  void (*calc_buffer_dimensions) (j_decompress_ptr cinfo,
-                                  djpeg_dest_ptr dinfo);
-
 
   /* Target file spec; filled in by djpeg.c after object is created. */
-  FILE *output_file;
+  FILE * output_file;
 
   /* Output pixel-row buffer.  Created by module init or start_output.
    * Width is cinfo->output_width * cinfo->output_components;
@@ -84,74 +79,109 @@ struct djpeg_dest_struct {
  */
 
 struct cdjpeg_progress_mgr {
-  struct jpeg_progress_mgr pub; /* fields known to JPEG library */
+  struct jpeg_progress_mgr pub;	/* fields known to JPEG library */
-  int completed_extra_passes;   /* extra passes completed */
+  int completed_extra_passes;	/* extra passes completed */
-  int total_extra_passes;       /* total extra */
+  int total_extra_passes;	/* total extra */
   /* last printed percentage stored here to avoid multiple printouts */
   int percent_done;
 };
 
-typedef struct cdjpeg_progress_mgr *cd_progress_ptr;
+typedef struct cdjpeg_progress_mgr * cd_progress_ptr;
 
 
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jinit_read_bmp		jIRdBMP
+#define jinit_write_bmp		jIWrBMP
+#define jinit_read_gif		jIRdGIF
+#define jinit_write_gif		jIWrGIF
+#define jinit_read_ppm		jIRdPPM
+#define jinit_write_ppm		jIWrPPM
+#define jinit_read_rle		jIRdRLE
+#define jinit_write_rle		jIWrRLE
+#define jinit_read_targa	jIRdTarga
+#define jinit_write_targa	jIWrTarga
+#define read_quant_tables	RdQTables
+#define read_scan_script	RdScnScript
+#define set_quality_ratings     SetQRates
+#define set_quant_slots		SetQSlots
+#define set_sample_factors	SetSFacts
+#define read_color_map		RdCMap
+#define enable_signal_catcher	EnSigCatcher
+#define start_progress_monitor	StProgMon
+#define end_progress_monitor	EnProgMon
+#define read_stdin		RdStdin
+#define write_stdout		WrStdout
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
 /* Module selection routines for I/O modules. */
 
-EXTERN(cjpeg_source_ptr) jinit_read_bmp(j_compress_ptr cinfo,
+EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo));
-                                        boolean use_inversion_array);
+EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo,
-EXTERN(djpeg_dest_ptr) jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2,
+					    boolean is_os2));
-                                       boolean use_inversion_array);
+EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo));
-EXTERN(cjpeg_source_ptr) jinit_read_gif(j_compress_ptr cinfo);
+EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo));
-EXTERN(djpeg_dest_ptr) jinit_write_gif(j_decompress_ptr cinfo);
+EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo));
-EXTERN(cjpeg_source_ptr) jinit_read_ppm(j_compress_ptr cinfo);
+EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo));
-EXTERN(djpeg_dest_ptr) jinit_write_ppm(j_decompress_ptr cinfo);
+EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo));
-EXTERN(cjpeg_source_ptr) jinit_read_rle(j_compress_ptr cinfo);
+EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo));
-EXTERN(djpeg_dest_ptr) jinit_write_rle(j_decompress_ptr cinfo);
+EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo));
-EXTERN(cjpeg_source_ptr) jinit_read_targa(j_compress_ptr cinfo);
+EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo));
-EXTERN(djpeg_dest_ptr) jinit_write_targa(j_decompress_ptr cinfo);
 
 /* cjpeg support routines (in rdswitch.c) */
 
-EXTERN(boolean) read_quant_tables(j_compress_ptr cinfo, char *filename,
+EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
-                                  boolean force_baseline);
+				       boolean force_baseline));
-EXTERN(boolean) read_scan_script(j_compress_ptr cinfo, char *filename);
+EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
-EXTERN(boolean) set_quality_ratings(j_compress_ptr cinfo, char *arg,
+EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg,
-                                    boolean force_baseline);
+					 boolean force_baseline));
-EXTERN(boolean) set_quant_slots(j_compress_ptr cinfo, char *arg);
+EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
-EXTERN(boolean) set_sample_factors(j_compress_ptr cinfo, char *arg);
+EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg));
 
 /* djpeg support routines (in rdcolmap.c) */
 
-EXTERN(void) read_color_map(j_decompress_ptr cinfo, FILE *infile);
+EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
 
 /* common support routines (in cdjpeg.c) */
 
-EXTERN(void) enable_signal_catcher(j_common_ptr cinfo);
+EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo));
-EXTERN(void) start_progress_monitor(j_common_ptr cinfo,
+EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo,
-                                    cd_progress_ptr progress);
+					 cd_progress_ptr progress));
-EXTERN(void) end_progress_monitor(j_common_ptr cinfo);
+EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo));
-EXTERN(boolean) keymatch(char *arg, const char *keyword, int minchars);
+EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars));
-EXTERN(FILE *) read_stdin(void);
+EXTERN(FILE *) read_stdin JPP((void));
-EXTERN(FILE *) write_stdout(void);
+EXTERN(FILE *) write_stdout JPP((void));
 
 /* miscellaneous useful macros */
 
-#ifdef DONT_USE_B_MODE          /* define mode parameters for fopen() */
+#ifdef DONT_USE_B_MODE		/* define mode parameters for fopen() */
-#define READ_BINARY     "r"
+#define READ_BINARY	"r"
-#define WRITE_BINARY    "w"
+#define WRITE_BINARY	"w"
 #else
-#define READ_BINARY     "rb"
+#ifdef VMS			/* VMS is very nonstandard */
-#define WRITE_BINARY    "wb"
+#define READ_BINARY	"rb", "ctx=stm"
+#define WRITE_BINARY	"wb", "ctx=stm"
+#else				/* standard ANSI-compliant case */
+#define READ_BINARY	"rb"
+#define WRITE_BINARY	"wb"
+#endif
 #endif
 
-#ifndef EXIT_FAILURE            /* define exit() codes if not provided */
+#ifndef EXIT_FAILURE		/* define exit() codes if not provided */
 #define EXIT_FAILURE  1
 #endif
 #ifndef EXIT_SUCCESS
+#ifdef VMS
+#define EXIT_SUCCESS  1		/* VMS is very nonstandard */
+#else
 #define EXIT_SUCCESS  0
 #endif
+#endif
 #ifndef EXIT_WARNING
+#ifdef VMS
+#define EXIT_WARNING  1		/* VMS is very nonstandard */
+#else
 #define EXIT_WARNING  2
 #endif
-
+#endif
-#define IsExtRGB(cs) \
-  (cs == JCS_RGB || (cs >= JCS_EXT_RGB && cs <= JCS_EXT_ARGB))

change.log

@@ -1,27 +1,112 @@
-libjpeg-turbo note:  This file has been modified by The libjpeg-turbo Project
-to include only information relevant to libjpeg-turbo.  It is included only for
-reference.  Please see ChangeLog.md for information specific to libjpeg-turbo.
-
-
 CHANGE LOG for Independent JPEG Group's JPEG software
 
 
+Version 9c  14-Jan-2018
+-----------------------
+
+jpegtran: add an option to the -wipe switch to fill the region
+with the average of adjacent blocks, instead of gray out.
+Thank to Caitlyn Feddock and Maddie Ziegler for inspiration.
+
+Make range extension bits adjustable (in jpegint.h).
+Thank to Robin Watts for suggestion.
+
+Provide macros for fflush() and ferror() in jinclude.h in order
+to facilitate adaption by applications using an own FILE class.
+Thank to Gerhard Huber for suggestion.
+
+Add libjpeg pkg-config file.  Thank to Mark Lavi, Vincent Torri,
+Patrick McMunn, and Huw Davies for suggestion.
+
+Add sanity checks in cjpeg image reader modules.
+Thank to Bingchang, Liu for reports.
+
+
 Version 9b  17-Jan-2016
 -----------------------
 
+Improvements and optimizations in DCT and color calculations.
+Normalize range limit array composition and access pattern.
+Thank to Sia Furler and Maddie Ziegler for inspiration.
+
+Use merged upsample with scaled DCT sizes larger than 8.
+Thank to Taylor Hatala for inspiration.
+
+Check for excessive comment lengths in argument parsing in wrjpgcom.c.
+Thank to Julian Cohen for hint.
+
+Add makefile.b32 for use with Borland C++ 32-bit (bcc32).
+Thank to Joe Slater for contribution.
+
 Document 'f' specifier for jpegtran -crop specification.
 Thank to Michele Martone for suggestion.
 
+Use defined value from header instead of hardwired number in rdswitch.c.
+Thank to Robert Sprowson for hint.
+
+
+Version 9a  19-Jan-2014
+-----------------------
+
+Add support for wide gamut color spaces (JFIF version 2).
+Improve clarity and accuracy in color conversion modules.
+Note: Requires rebuild of test images.
+
+Extend the bit depth support to all values from 8 to 12
+(BITS_IN_JSAMPLE configuration option in jmorecfg.h).
+jpegtran now supports N bits sample data precision with all N from 8 to 12
+in a single instance.  Thank to Roland Fassauer for inspiration.
+
+Try to resolve issues with new boolean type definition.
+Thank also to v4hn for suggestion.
+
+Enable option to use default Huffman tables for lossless compression
+(for hardware solution), and in this case improve lossless RGB compression
+with reversible color transform.  Thank to Benny Alexandar for hint.
+
+Extend the entropy decoding structure, so that extraneous bytes between
+compressed scan data and following marker can be reported correctly.
+Thank to Nigel Tao for hint.
+
+Add jpegtran -wipe option and extension for -crop.
+Thank to Andrew Senior, David Clunie, and Josef Schmid for suggestion.
+
 
 Version 9  13-Jan-2013
 ----------------------
 
+Add cjpeg -rgb1 option to create an RGB JPEG file, and insert
+a simple reversible color transform into the processing which
+significantly improves the compression.
+The recommended command for lossless coding of RGB images is now
+cjpeg -rgb1 -block 1 -arithmetic.
+As said, this option improves the compression significantly, but
+the files are not compatible with JPEG decoders prior to IJG v9
+due to the included color transform.
+The used color transform and marker signaling is compatible with
+other JPEG standards (e.g., JPEG-LS part 2).
+
+Remove the automatic de-ANSI-fication support (Automake 1.12).
+Thank also to Nitin A Kamble for suggestion.
+
 Add remark for jpeg_mem_dest() in jdatadst.c.
 Thank to Elie-Gregoire Khoury for the hint.
 
+Support files with invalid component identifiers (created
+by Adobe PDF).  Thank to Robin Watts for the suggestion.
+
+Adapt full buffer case in jcmainct.c for use with scaled DCT.
+Thank to Sergii Biloshytskyi for the suggestion.
+
+Add type identifier for declaration of noreturn functions.
+Thank to Brett L. Moore for the suggestion.
+
 Correct argument type in format string, avoid compiler warnings.
 Thank to Vincent Torri for hint.
 
+Add missing #include directives in configuration checks, avoid
+configuration errors.  Thank to John Spencer for the hint.
+
 
 Version 8d  15-Jan-2012
 -----------------------
@@ -29,11 +114,30 @@ Version 8d  15-Jan-2012
 Add cjpeg -rgb option to create RGB JPEG files.
 Using this switch suppresses the conversion from RGB
 colorspace input to the default YCbCr JPEG colorspace.
+This feature allows true lossless JPEG coding of RGB color images.
+The recommended command for this purpose is currently
+cjpeg -rgb -block 1 -arithmetic.
+SmartScale capable decoder (introduced with IJG JPEG 8) required.
 Thank to Michael Koch for the initial suggestion.
 
 Add option to disable the region adjustment in the transupp crop code.
 Thank to Jeffrey Friedl for the suggestion.
 
+Thank to Richard Jones and Edd Dawson for various minor corrections.
+
+Thank to Akim Demaille for configure.ac cleanup.
+
+
+Version 8c  16-Jan-2011
+-----------------------
+
+Add option to compression library and cjpeg (-block N) to use
+different DCT block size.
+All N from 1 to 16 are possible.  Default is 8 (baseline format).
+Larger values produce higher compression,
+smaller values produce higher quality.
+SmartScale capable decoder (introduced with IJG JPEG 8) required.
+
 
 Version 8b  16-May-2010
 -----------------------
@@ -41,6 +145,12 @@ Version 8b  16-May-2010
 Repair problem in new memory source manager with corrupt JPEG data.
 Thank to Ted Campbell and Samuel Chun for the report.
 
+Repair problem in Makefile.am test target.
+Thank to anonymous user for the report.
+
+Support MinGW installation with automatic configure.
+Thank to Volker Grabsch for the suggestion.
+
 
 Version 8a  28-Feb-2010
 -----------------------
@@ -50,10 +160,22 @@ Writing tables-only datastreams via jpeg_write_tables works again.
 Support 32-bit BMPs (RGB image with Alpha channel) for read in cjpeg.
 Thank to Brett Blackham for the suggestion.
 
+Improve accuracy in floating point IDCT calculation.
+Thank to Robert Hooke for the hint.
+
 
 Version 8  10-Jan-2010
 ----------------------
 
+jpegtran now supports the same -scale option as djpeg for "lossless" resize.
+An implementation of the JPEG SmartScale extension is required for this
+feature.  A (draft) specification of the JPEG SmartScale extension is
+available as a contributed document at ITU and ISO.  Revision 2 or later
+of the document is required (latest document version is Revision 3).
+The SmartScale extension will enable more features beside lossless resize
+in future implementations, as described in the document (new compression
+options).
+
 Add sanity check in BMP reader module to avoid cjpeg crash for empty input
 image (thank to Isaev Ildar of ISP RAS, Moscow, RU for reporting this error).
 
@@ -67,15 +189,31 @@ Version 7  27-Jun-2009
 
 New scaled DCTs implemented.
 djpeg now supports scalings N/8 with all N from 1 to 16.
+cjpeg now supports scalings 8/N with all N from 1 to 16.
+Scaled DCTs with size larger than 8 are now also used for resolving the
+common 2x2 chroma subsampling case without additional spatial resampling.
+Separate spatial resampling for those kind of files is now only necessary
+for N>8 scaling cases.
+Furthermore, separate scaled DCT functions are provided for direct resolving
+of the common asymmetric subsampling cases (2x1 and 1x2) without additional
+spatial resampling.
 
 cjpeg -quality option has been extended for support of separate quality
 settings for luminance and chrominance (or in general, for every provided
 quantization table slot).
 New API function jpeg_default_qtables() and q_scale_factor array in library.
 
+Added -nosmooth option to cjpeg, complementary to djpeg.
+New variable "do_fancy_downsampling" in library, complement to fancy
+upsampling.  Fancy upsampling now uses direct DCT scaling with sizes
+larger than 8.  The old method is not reversible and has been removed.
+
 Support arithmetic entropy encoding and decoding.
 Added files jaricom.c, jcarith.c, jdarith.c.
 
+Straighten the file structure:
+Removed files jidctred.c, jcphuff.c, jchuff.h, jdphuff.c, jdhuff.h.
+
 jpegtran has a new "lossless" cropping feature.
 
 Implement -perfect option in jpegtran, new API function

cjpeg.1

@@ -1,4 +1,4 @@
-.TH CJPEG 1 "18 March 2017"
+.TH CJPEG 1 "26 July 2015"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS
@@ -46,13 +46,19 @@ compressing a grayscale BMP file, because
 .B cjpeg
 isn't bright enough to notice whether a BMP file uses only shades of gray.
 By saying
-.BR \-grayscale,
+.BR \-grayscale ,
 you'll get a smaller JPEG file that takes less time to process.
 .TP
 .B \-rgb
 Create RGB JPEG file.
 Using this switch suppresses the conversion from RGB
 colorspace input to the default YCbCr JPEG colorspace.
+You can use this switch in combination with the
+.BI \-block " N"
+switch (see below) for lossless JPEG coding.
+See also the
+.B \-rgb1
+switch below.
 .TP
 .B \-optimize
 Perform optimization of entropy encoding parameters.  Without this, default
@@ -67,6 +73,13 @@ decompression are unaffected by
 .B \-progressive
 Create progressive JPEG file (see below).
 .TP
+.BI \-scale " M/N"
+Scale the output image by a factor M/N.  Currently supported scale factors are
+M/N with all N from 1 to 16, where M is the destination DCT size, which is 8
+by default (see
+.BI \-block " N"
+switch below).
+.TP
 .B \-targa
 Input file is Targa format.  Targa files that contain an "identification"
 field will not be automatically recognized by
@@ -85,8 +98,8 @@ reconstructed image: the higher the quality setting, the larger the JPEG file,
 and the closer the output image will be to the original input.  Normally you
 want to use the lowest quality setting (smallest file) that decompresses into
 something visually indistinguishable from the original image.  For this
-purpose the quality setting should generally be between 50 and 95 (the default
+purpose the quality setting should be between 50 and 95; the default of 75 is
-is 75) for photographic images.  If you see defects at
+often about right.  If you see defects at
 .B \-quality
 75, then go up 5 or 10 counts at a time until you are happy with the output
 image.  (The optimal setting will vary from one image to another.)
@@ -94,10 +107,11 @@ image.  (The optimal setting will vary from one image to another.)
 .B \-quality
 100 will generate a quantization table of all 1's, minimizing loss in the
 quantization step (but there is still information loss in subsampling, as well
-as roundoff error.)  For most images, specifying a quality value above
+as roundoff error).  This setting is mainly of interest for experimental
-about 95 will increase the size of the compressed file dramatically, and while
+purposes.  Quality values above about 95 are
-the quality gain from these higher quality values is measurable (using metrics
+.B not
-such as PSNR or SSIM), it is rarely perceivable by human vision.
+recommended for normal use; the compressed file size goes up dramatically for
+hardly any gain in output image quality.
 .PP
 In the other direction, quality values below 50 will produce very small files
 of low image quality.  Settings around 5 to 10 might be useful in preparing an
@@ -112,35 +126,33 @@ other JPEG programs may be unable to decode the resulting file.  Use
 .B \-baseline
 if you need to ensure compatibility at low quality values.)
 .PP
-The \fB-quality\fR option has been extended in this version of \fBcjpeg\fR to
+The
-support separate quality settings for luminance and chrominance (or, in
+.B \-quality
-general, separate settings for every quantization table slot.)  The principle
+option has been extended in IJG version 7 for support of separate quality
-is the same as chrominance subsampling:  since the human eye is more sensitive
+settings for luminance and chrominance (or in general, for every provided
-to spatial changes in brightness than spatial changes in color, the chrominance
+quantization table slot).  This feature is useful for high-quality
-components can be quantized more than the luminance components without
+applications which cannot accept the damage of color data by coarse
-incurring any visible image quality loss.  However, unlike subsampling, this
+subsampling settings.  You can now easily reduce the color data amount more
-feature reduces data in the frequency domain instead of the spatial domain,
+smoothly with finer control without separate subsampling.  The resulting file
-which allows for more fine-grained control.  This option is useful in
+is fully compliant with standard JPEG decoders.
-quality-sensitive applications, for which the artifacts generated by
+Note that the
-subsampling may be unacceptable.
+.B \-quality
-.PP
+ratings refer to the quantization table slots, and that the last value is
-The \fB-quality\fR option accepts a comma-separated list of parameters, which
+replicated if there are more q-table slots than parameters.  The default
-respectively refer to the quality levels that should be assigned to the
+q-table slots are 0 for luminance and 1 for chrominance with default tables as
-quantization table slots.  If there are more q-table slots than parameters,
+given in the JPEG standard.  This is compatible with the old behaviour in case
-then the last parameter is replicated.  Thus, if only one quality parameter is
+that only one parameter is given, which is then used for both luminance and
-given, this is used for both luminance and chrominance (slots 0 and 1,
+chrominance (slots 0 and 1).  More or custom quantization tables can be set
-respectively), preserving the legacy behavior of cjpeg v6b and prior.
+with
-More (or customized) quantization tables can be set with the \fB-qtables\fR
+.B \-qtables
-option and assigned to components with the \fB-qslots\fR option (see the
+and assigned to components with
-"wizard" switches below.)
+.B \-qslots
-.PP
+parameter (see the "wizard" switches below).
-JPEG files generated with separate luminance and chrominance quality are fully
+.B Caution:
-compliant with standard JPEG decoders.
+You must explicitly add
-.PP
+.BI \-sample " 1x1"
-.BR CAUTION:
+for efficient separate color
-For this setting to be useful, be sure to pass an argument of \fB-sample 1x1\fR
+quality selection, since the default value used by library is 2x2!
-to \fBcjpeg\fR to disable chrominance subsampling.  Otherwise, the default
-subsampling level (2x2, AKA "4:2:0") will be used.
 .PP
 The
 .B \-progressive
@@ -157,38 +169,72 @@ Switches for advanced users:
 .B \-arithmetic
 Use arithmetic coding.
 .B Caution:
-arithmetic coded JPEG is not yet widely implemented, so many decoders will be
+arithmetic coded JPEG is not yet widely implemented, so many decoders will
-unable to view an arithmetic coded JPEG file at all.
+be unable to view an arithmetic coded JPEG file at all.
+.TP
+.BI \-block " N"
+Set DCT block size.  All N from 1 to 16 are possible.
+Default is 8 (baseline format).
+Larger values produce higher compression,
+smaller values produce higher quality
+(exact DCT stage possible with 1 or 2; with the default quality of 75 and
+default Luminance qtable the DCT+Quantization stage is lossless for N=1).
+.B Caution:
+An implementation of the JPEG SmartScale extension is required for this
+feature.  SmartScale enabled JPEG is not yet widely implemented, so many
+decoders will be unable to view a SmartScale extended JPEG file at all.
+.TP
+.B \-rgb1
+Create RGB JPEG file with reversible color transform.
+Works like the
+.B \-rgb
+switch (see above) and inserts a simple reversible color transform
+into the processing which significantly improves the compression.
+Use this switch in combination with the
+.BI \-block " N"
+switch (see above) for lossless JPEG coding.
+.B Caution:
+A decoder with inverse color transform support is required for
+this feature.  Reversible color transform support is not yet
+widely implemented, so many decoders will be unable to view
+a reversible color transformed JPEG file at all.
+.TP
+.B \-bgycc
+Create big gamut YCC JPEG file.
+In this type of encoding the color difference components are quantized
+further by a factor of 2 compared to the normal Cb/Cr values, thus creating
+space to allow larger color values with higher saturation than the normal
+gamut limits to be encoded.  In order to compensate for the loss of color
+fidelity compared to a normal YCC encoded file, the color quantization
+tables can be adjusted accordingly.  For example,
+.B cjpeg \-bgycc \-quality
+80,90 will give similar results as
+.B cjpeg \-quality
+80.
+.B Caution:
+For correct decompression a decoder with big gamut YCC support (JFIF
+version 2) is required.  An old decoder may or may not display a big
+gamut YCC encoded JPEG file, depending on JFIF version check and
+corresponding warning/error configuration.  In case of a granted
+decompression the old decoder will display the image with half
+saturated colors.
 .TP
 .B \-dct int
 Use integer DCT method (default).
 .TP
 .B \-dct fast
 Use fast integer DCT (less accurate).
-In libjpeg-turbo, the fast method is generally about 5-15% faster than the int
-method when using the x86/x86-64 SIMD extensions (results may vary with other
-SIMD implementations, or when using libjpeg-turbo without SIMD extensions.)
-For quality levels of 90 and below, there should be little or no perceptible
-difference between the two algorithms.  For quality levels above 90, however,
-the difference between the fast and the int methods becomes more pronounced.
-With quality=97, for instance, the fast method incurs generally about a 1-3 dB
-loss (in PSNR) relative to the int method, but this can be larger for some
-images.  Do not use the fast method with quality levels above 97.  The
-algorithm often degenerates at quality=98 and above and can actually produce a
-more lossy image than if lower quality levels had been used.  Also, in
-libjpeg-turbo, the fast method is not fully accelerated for quality levels
-above 97, so it will be slower than the int method.
 .TP
 .B \-dct float
 Use floating-point DCT method.
-The float method is mainly a legacy feature.  It does not produce significantly
+The float method is very slightly more accurate than the int method, but is
-more accurate results than the int method, and it is much slower.  The float
+much slower unless your machine has very fast floating-point hardware.  Also
-method may also give different results on different machines due to varying
+note that results of the floating-point method may vary slightly across
-roundoff behavior, whereas the integer methods should give the same results on
+machines, while the integer methods should give the same results everywhere.
-all machines.
+The fast integer method is much less accurate than the other two.
 .TP
-.BI \-icc " file"
+.B \-nosmooth
-Embed ICC color management profile contained in the specified file.
+Don't use high-quality downsampling.
 .TP
 .BI \-restart " N"
 Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
@@ -205,16 +251,11 @@ Set limit for amount of memory to use in processing large images.  Value is
 in thousands of bytes, or millions of bytes if "M" is attached to the
 number.  For example,
 .B \-max 4m
-selects 4000000 bytes.  If more space is needed, an error will occur.
+selects 4000000 bytes.  If more space is needed, temporary files will be used.
 .TP
 .BI \-outfile " name"
 Send output image to the named file, not to standard output.
 .TP
-.BI \-memdst
-Compress to memory instead of a file.  This feature was implemented mainly as a
-way of testing the in-memory destination manager (jpeg_mem_dest()), but it is
-also useful for benchmarking, since it reduces the I/O overhead.
-.TP
 .B \-verbose
 Enable debug printout.  More
 .BR \-v 's
@@ -223,9 +264,6 @@ give more output.  Also, version information is printed at startup.
 .B \-debug
 Same as
 .BR \-verbose .
-.TP
-.B \-version
-Print version information and exit.
 .PP
 The
 .B \-restart
@@ -336,15 +374,10 @@ Wallace, Gregory K.  "The JPEG Still Picture Compression Standard",
 Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
 .SH AUTHOR
 Independent JPEG Group
-.PP
+.SH BUGS
-This file was modified by The libjpeg-turbo Project to include only information
+GIF input files are no longer supported, to avoid the Unisys LZW patent
-relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
+(now expired).
-features not present in libjpeg.
+(Conversion of GIF files to JPEG is usually a bad idea anyway.)
-.SH ISSUES
-Support for GIF input files was removed in cjpeg v6b due to concerns over
-the Unisys LZW patent.  Although this patent expired in 2006, cjpeg still
-lacks GIF support, for these historical reasons.  (Conversion of GIF files to
-JPEG is usually a bad idea anyway, since GIF is a 256-color format.)
 .PP
 Not all variants of BMP and Targa file formats are supported.
 .PP

cjpeg.c

@@ -1,21 +1,18 @@
 /*
  * cjpeg.c
  *
- * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * Modified 2003-2011 by Guido Vollbeding.
+ * Modified 2003-2013 by Guido Vollbeding.
- * libjpeg-turbo Modifications:
+ * This file is part of the Independent JPEG Group's software.
- * Copyright (C) 2010, 2013-2014, 2017, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README file.
- * For conditions of distribution and use, see the accompanying README.ijg
- * file.
  *
  * This file contains a command-line user interface for the JPEG compressor.
  * It should work on any system with Unix- or MS-DOS-style command lines.
  *
  * Two different command line styles are permitted, depending on the
  * compile-time switch TWO_FILE_COMMANDLINE:
- *      cjpeg [options]  inputfile outputfile
+ *	cjpeg [options]  inputfile outputfile
- *      cjpeg [options]  [inputfile]
+ *	cjpeg [options]  [inputfile]
  * In the second style, output is always to standard output, which you'd
  * normally redirect to a file or pipe to some other program.  Input is
  * either from a named file or from standard input (typically redirected).
@@ -23,33 +20,27 @@
  * don't support pipes.  Also, you MUST use the first style if your system
  * doesn't do binary I/O to stdin/stdout.
  * To simplify script writing, the "-outfile" switch is provided.  The syntax
- *      cjpeg [options]  -outfile outputfile  inputfile
+ *	cjpeg [options]  -outfile outputfile  inputfile
  * works regardless of which command line style is used.
  */
 
-#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
-#include "jversion.h"           /* for version message */
+#include "jversion.h"		/* for version message */
-#include "jconfigint.h"
 
-#ifndef HAVE_STDLIB_H           /* <stdlib.h> should declare malloc(),free() */
+#ifdef USE_CCOMMAND		/* command-line reader for Macintosh */
-extern void *malloc(size_t size);
-extern void free(void *ptr);
-#endif
-
-#ifdef USE_CCOMMAND             /* command-line reader for Macintosh */
 #ifdef __MWERKS__
 #include <SIOUX.h>              /* Metrowerks needs this */
-#include <console.h>            /* ... and this */
+#include <console.h>		/* ... and this */
 #endif
 #ifdef THINK_C
-#include <console.h>            /* Think declares it here */
+#include <console.h>		/* Think declares it here */
 #endif
 #endif
 
 
 /* Create the add-on message string table. */
 
-#define JMESSAGE(code, string)  string,
+#define JMESSAGE(code,string)	string ,
 
 static const char * const cdjpeg_message_table[] = {
 #include "cderror.h"
@@ -83,11 +74,11 @@ static const char * const cdjpeg_message_table[] = {
  * seldom-used ID field), so we provide a switch to force Targa input mode.
  */
 
-static boolean is_targa;        /* records user -targa switch */
+static boolean is_targa;	/* records user -targa switch */
 
 
 LOCAL(cjpeg_source_ptr)
-select_file_type(j_compress_ptr cinfo, FILE *infile)
+select_file_type (j_compress_ptr cinfo, FILE * infile)
 {
   int c;
 
@@ -107,7 +98,7 @@ select_file_type(j_compress_ptr cinfo, FILE *infile)
   switch (c) {
 #ifdef BMP_SUPPORTED
   case 'B':
-    return jinit_read_bmp(cinfo, TRUE);
+    return jinit_read_bmp(cinfo);
 #endif
 #ifdef GIF_SUPPORTED
   case 'G':
@@ -130,7 +121,7 @@ select_file_type(j_compress_ptr cinfo, FILE *infile)
     break;
   }
 
-  return NULL;                  /* suppress compiler warnings */
+  return NULL;			/* suppress compiler warnings */
 }
 
 
@@ -143,14 +134,12 @@ select_file_type(j_compress_ptr cinfo, FILE *infile)
  */
 
 
-static const char *progname;    /* program name for error messages */
+static const char * progname;	/* program name for error messages */
-static char *icc_filename;      /* for -icc switch */
+static char * outfilename;	/* for -outfile switch */
-static char *outfilename;       /* for -outfile switch */
-boolean memdst;                 /* for -memdst switch */
 
 
 LOCAL(void)
-usage(void)
+usage (void)
 /* complain about bad command line */
 {
   fprintf(stderr, "usage: %s [switches] ", progname);
@@ -161,8 +150,7 @@ usage(void)
 #endif
 
   fprintf(stderr, "Switches (names may be abbreviated):\n");
-  fprintf(stderr, "  -quality N[,...]   Compression quality (0..100; 5-95 is most useful range,\n");
+  fprintf(stderr, "  -quality N[,...]   Compression quality (0..100; 5-95 is useful range)\n");
-  fprintf(stderr, "                     default is 75)\n");
   fprintf(stderr, "  -grayscale     Create monochrome JPEG file\n");
   fprintf(stderr, "  -rgb           Create RGB JPEG file\n");
 #ifdef ENTROPY_OPT_SUPPORTED
@@ -171,6 +159,9 @@ usage(void)
 #ifdef C_PROGRESSIVE_SUPPORTED
   fprintf(stderr, "  -progressive   Create progressive JPEG file\n");
 #endif
+#ifdef DCT_SCALING_SUPPORTED
+  fprintf(stderr, "  -scale M/N     Scale image by fraction M/N, eg, 1/2\n");
+#endif
 #ifdef TARGA_SUPPORTED
   fprintf(stderr, "  -targa         Input file is Targa format (usually not needed)\n");
 #endif
@@ -178,45 +169,48 @@ usage(void)
 #ifdef C_ARITH_CODING_SUPPORTED
   fprintf(stderr, "  -arithmetic    Use arithmetic coding\n");
 #endif
+#ifdef DCT_SCALING_SUPPORTED
+  fprintf(stderr, "  -block N       DCT block size (1..16; default is 8)\n");
+#endif
+#if JPEG_LIB_VERSION_MAJOR >= 9
+  fprintf(stderr, "  -rgb1          Create RGB JPEG file with reversible color transform\n");
+  fprintf(stderr, "  -bgycc         Create big gamut YCC JPEG file\n");
+#endif
 #ifdef DCT_ISLOW_SUPPORTED
   fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
-          (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
+	  (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
 #endif
 #ifdef DCT_IFAST_SUPPORTED
   fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
-          (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
+	  (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
 #endif
 #ifdef DCT_FLOAT_SUPPORTED
   fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
-          (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
+	  (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
 #endif
-  fprintf(stderr, "  -icc FILE      Embed ICC profile contained in FILE\n");
+  fprintf(stderr, "  -nosmooth      Don't use high-quality downsampling\n");
   fprintf(stderr, "  -restart N     Set restart interval in rows, or in blocks with B\n");
 #ifdef INPUT_SMOOTHING_SUPPORTED
   fprintf(stderr, "  -smooth N      Smooth dithered input (N=1..100 is strength)\n");
 #endif
   fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
   fprintf(stderr, "  -outfile name  Specify name for output file\n");
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-  fprintf(stderr, "  -memdst        Compress to memory instead of file (useful for benchmarking)\n");
-#endif
   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
-  fprintf(stderr, "  -version       Print version information and exit\n");
   fprintf(stderr, "Switches for wizards:\n");
   fprintf(stderr, "  -baseline      Force baseline quantization tables\n");
-  fprintf(stderr, "  -qtables FILE  Use quantization tables given in FILE\n");
+  fprintf(stderr, "  -qtables file  Use quantization tables given in file\n");
   fprintf(stderr, "  -qslots N[,...]    Set component quantization tables\n");
   fprintf(stderr, "  -sample HxV[,...]  Set component sampling factors\n");
 #ifdef C_MULTISCAN_FILES_SUPPORTED
-  fprintf(stderr, "  -scans FILE    Create multi-scan JPEG per script FILE\n");
+  fprintf(stderr, "  -scans file    Create multi-scan JPEG per script file\n");
 #endif
   exit(EXIT_FAILURE);
 }
 
 
 LOCAL(int)
-parse_switches(j_compress_ptr cinfo, int argc, char **argv,
+parse_switches (j_compress_ptr cinfo, int argc, char **argv,
-               int last_file_arg_seen, boolean for_real)
+		int last_file_arg_seen, boolean for_real)
 /* Parse optional switches.
  * Returns argv[] index of first file-name argument (== argc if none).
  * Any file names with indexes <= last_file_arg_seen are ignored;
@@ -227,23 +221,21 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
  */
 {
   int argn;
-  char *arg;
+  char * arg;
   boolean force_baseline;
   boolean simple_progressive;
-  char *qualityarg = NULL;      /* saves -quality parm if any */
+  char * qualityarg = NULL;	/* saves -quality parm if any */
-  char *qtablefile = NULL;      /* saves -qtables filename if any */
+  char * qtablefile = NULL;	/* saves -qtables filename if any */
-  char *qslotsarg = NULL;       /* saves -qslots parm if any */
+  char * qslotsarg = NULL;	/* saves -qslots parm if any */
-  char *samplearg = NULL;       /* saves -sample parm if any */
+  char * samplearg = NULL;	/* saves -sample parm if any */
-  char *scansarg = NULL;        /* saves -scans parm if any */
+  char * scansarg = NULL;	/* saves -scans parm if any */
 
   /* Set up default JPEG parameters. */
 
-  force_baseline = FALSE;       /* by default, allow 16-bit quantizers */
+  force_baseline = FALSE;	/* by default, allow 16-bit quantizers */
   simple_progressive = FALSE;
   is_targa = FALSE;
-  icc_filename = NULL;
   outfilename = NULL;
-  memdst = FALSE;
   cinfo->err->trace_level = 0;
 
   /* Scan command line options, adjust parameters */
@@ -253,12 +245,12 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
     if (*arg != '-') {
       /* Not a switch, must be a file name argument */
       if (argn <= last_file_arg_seen) {
-        outfilename = NULL;     /* -outfile applies to just one input file */
+	outfilename = NULL;	/* -outfile applies to just one input file */
-        continue;               /* ignore this name if previously processed */
+	continue;		/* ignore this name if previously processed */
       }
-      break;                    /* else done parsing switches */
+      break;			/* else done parsing switches */
     }
-    arg++;                      /* advance past switch marker character */
+    arg++;			/* advance past switch marker character */
 
     if (keymatch(arg, "arithmetic", 1)) {
       /* Use arithmetic coding. */
@@ -266,90 +258,115 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
       cinfo->arith_code = TRUE;
 #else
       fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
-              progname);
+	      progname);
       exit(EXIT_FAILURE);
 #endif
 
-    } else if (keymatch(arg, "baseline", 1)) {
+    } else if (keymatch(arg, "baseline", 2)) {
       /* Force baseline-compatible output (8-bit quantizer values). */
       force_baseline = TRUE;
 
+    } else if (keymatch(arg, "block", 2)) {
+      /* Set DCT block size. */
+#if defined DCT_SCALING_SUPPORTED && JPEG_LIB_VERSION_MAJOR >= 8 && \
+      (JPEG_LIB_VERSION_MAJOR > 8 || JPEG_LIB_VERSION_MINOR >= 3)
+      int val;
+
+      if (++argn >= argc)	/* advance to next argument */
+	usage();
+      if (sscanf(argv[argn], "%d", &val) != 1)
+	usage();
+      if (val < 1 || val > 16)
+	usage();
+      cinfo->block_size = val;
+#else
+      fprintf(stderr, "%s: sorry, block size setting not supported\n",
+	      progname);
+      exit(EXIT_FAILURE);
+#endif
+
     } else if (keymatch(arg, "dct", 2)) {
       /* Select DCT algorithm. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (keymatch(argv[argn], "int", 1)) {
-        cinfo->dct_method = JDCT_ISLOW;
+	cinfo->dct_method = JDCT_ISLOW;
       } else if (keymatch(argv[argn], "fast", 2)) {
-        cinfo->dct_method = JDCT_IFAST;
+	cinfo->dct_method = JDCT_IFAST;
       } else if (keymatch(argv[argn], "float", 2)) {
-        cinfo->dct_method = JDCT_FLOAT;
+	cinfo->dct_method = JDCT_FLOAT;
       } else
-        usage();
+	usage();
 
     } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
       /* Enable debug printouts. */
       /* On first -d, print version identification */
       static boolean printed_version = FALSE;
 
-      if (!printed_version) {
+      if (! printed_version) {
-        fprintf(stderr, "%s version %s (build %s)\n",
+	fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n",
-                PACKAGE_NAME, VERSION, BUILD);
+		JVERSION, JCOPYRIGHT);
-        fprintf(stderr, "%s\n\n", JCOPYRIGHT);
+	printed_version = TRUE;
-        fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
-                JVERSION);
-        printed_version = TRUE;
       }
       cinfo->err->trace_level++;
 
-    } else if (keymatch(arg, "version", 4)) {
+    } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
-      fprintf(stderr, "%s version %s (build %s)\n",
-              PACKAGE_NAME, VERSION, BUILD);
-      exit(EXIT_SUCCESS);
-
-    } else if (keymatch(arg, "grayscale", 2) ||
-               keymatch(arg, "greyscale", 2)) {
       /* Force a monochrome JPEG file to be generated. */
       jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
 
-    } else if (keymatch(arg, "rgb", 3)) {
+    } else if (keymatch(arg, "rgb", 3) || keymatch(arg, "rgb1", 4)) {
       /* Force an RGB JPEG file to be generated. */
+#if JPEG_LIB_VERSION_MAJOR >= 9
+      /* Note: Entropy table assignment in jpeg_set_colorspace depends
+       * on color_transform.
+       */
+      cinfo->color_transform = arg[3] ? JCT_SUBTRACT_GREEN : JCT_NONE;
+#endif
       jpeg_set_colorspace(cinfo, JCS_RGB);
 
-    } else if (keymatch(arg, "icc", 1)) {
+    } else if (keymatch(arg, "bgycc", 5)) {
-      /* Set ICC filename. */
+      /* Force a big gamut YCC JPEG file to be generated. */
-      if (++argn >= argc)       /* advance to next argument */
+#if JPEG_LIB_VERSION_MAJOR >= 9 && \
-        usage();
+      (JPEG_LIB_VERSION_MAJOR > 9 || JPEG_LIB_VERSION_MINOR >= 1)
-      icc_filename = argv[argn];
+      jpeg_set_colorspace(cinfo, JCS_BG_YCC);
+#else
+      fprintf(stderr, "%s: sorry, BG_YCC colorspace not supported\n",
+	      progname);
+      exit(EXIT_FAILURE);
+#endif
 
     } else if (keymatch(arg, "maxmemory", 3)) {
       /* Maximum memory in Kb (or Mb with 'm'). */
       long lval;
       char ch = 'x';
 
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
-        usage();
+	usage();
       if (ch == 'm' || ch == 'M')
-        lval *= 1000L;
+	lval *= 1000L;
       cinfo->mem->max_memory_to_use = lval * 1000L;
 
+    } else if (keymatch(arg, "nosmooth", 3)) {
+      /* Suppress fancy downsampling. */
+      cinfo->do_fancy_downsampling = FALSE;
+
     } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
       /* Enable entropy parm optimization. */
 #ifdef ENTROPY_OPT_SUPPORTED
       cinfo->optimize_coding = TRUE;
 #else
-      fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n",
+      fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
-              progname);
+	      progname);
       exit(EXIT_FAILURE);
 #endif
 
     } else if (keymatch(arg, "outfile", 4)) {
       /* Set output file name. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
-      outfilename = argv[argn]; /* save it away for later use */
+      outfilename = argv[argn];	/* save it away for later use */
 
     } else if (keymatch(arg, "progressive", 1)) {
       /* Select simple progressive mode. */
@@ -357,31 +374,21 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
       simple_progressive = TRUE;
       /* We must postpone execution until num_components is known. */
 #else
-      fprintf(stderr, "%s: sorry, progressive output was not compiled in\n",
+      fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
-              progname);
+	      progname);
-      exit(EXIT_FAILURE);
-#endif
-
-    } else if (keymatch(arg, "memdst", 2)) {
-      /* Use in-memory destination manager */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-      memdst = TRUE;
-#else
-      fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n",
-              progname);
       exit(EXIT_FAILURE);
 #endif
 
     } else if (keymatch(arg, "quality", 1)) {
       /* Quality ratings (quantization table scaling factors). */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       qualityarg = argv[argn];
 
     } else if (keymatch(arg, "qslots", 2)) {
       /* Quantization table slot numbers. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       qslotsarg = argv[argn];
       /* Must delay setting qslots until after we have processed any
        * colorspace-determining switches, since jpeg_set_colorspace sets
@@ -390,8 +397,8 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
 
     } else if (keymatch(arg, "qtables", 2)) {
       /* Quantization tables fetched from file. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       qtablefile = argv[argn];
       /* We postpone actually reading the file in case -quality comes later. */
 
@@ -400,40 +407,48 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
       long lval;
       char ch = 'x';
 
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
-        usage();
+	usage();
       if (lval < 0 || lval > 65535L)
-        usage();
+	usage();
       if (ch == 'b' || ch == 'B') {
-        cinfo->restart_interval = (unsigned int)lval;
+	cinfo->restart_interval = (unsigned int) lval;
-        cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
+	cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
       } else {
-        cinfo->restart_in_rows = (int)lval;
+	cinfo->restart_in_rows = (int) lval;
-        /* restart_interval will be computed during startup */
+	/* restart_interval will be computed during startup */
       }
 
     } else if (keymatch(arg, "sample", 2)) {
       /* Set sampling factors. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       samplearg = argv[argn];
       /* Must delay setting sample factors until after we have processed any
        * colorspace-determining switches, since jpeg_set_colorspace sets
        * default sampling factors.
        */
 
+    } else if (keymatch(arg, "scale", 4)) {
+      /* Scale the image by a fraction M/N. */
+      if (++argn >= argc)	/* advance to next argument */
+	usage();
+      if (sscanf(argv[argn], "%u/%u",
+		 &cinfo->scale_num, &cinfo->scale_denom) != 2)
+	usage();
+
     } else if (keymatch(arg, "scans", 4)) {
       /* Set scan script. */
 #ifdef C_MULTISCAN_FILES_SUPPORTED
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       scansarg = argv[argn];
       /* We must postpone reading the file in case -progressive appears. */
 #else
-      fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n",
+      fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
-              progname);
+	      progname);
       exit(EXIT_FAILURE);
 #endif
 
@@ -441,12 +456,12 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
       /* Set input smoothing factor. */
       int val;
 
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (sscanf(argv[argn], "%d", &val) != 1)
-        usage();
+	usage();
       if (val < 0 || val > 100)
-        usage();
+	usage();
       cinfo->smoothing_factor = val;
 
     } else if (keymatch(arg, "targa", 1)) {
@@ -454,7 +469,7 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
       is_targa = TRUE;
 
     } else {
-      usage();                  /* bogus switch */
+      usage();			/* bogus switch */
     }
   }
 
@@ -464,35 +479,35 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
 
     /* Set quantization tables for selected quality. */
     /* Some or all may be overridden if -qtables is present. */
-    if (qualityarg != NULL)     /* process -quality if it was present */
+    if (qualityarg != NULL)	/* process -quality if it was present */
-      if (!set_quality_ratings(cinfo, qualityarg, force_baseline))
+      if (! set_quality_ratings(cinfo, qualityarg, force_baseline))
-        usage();
+	usage();
 
-    if (qtablefile != NULL)     /* process -qtables if it was present */
+    if (qtablefile != NULL)	/* process -qtables if it was present */
-      if (!read_quant_tables(cinfo, qtablefile, force_baseline))
+      if (! read_quant_tables(cinfo, qtablefile, force_baseline))
-        usage();
+	usage();
 
-    if (qslotsarg != NULL)      /* process -qslots if it was present */
+    if (qslotsarg != NULL)	/* process -qslots if it was present */
-      if (!set_quant_slots(cinfo, qslotsarg))
+      if (! set_quant_slots(cinfo, qslotsarg))
-        usage();
+	usage();
 
-    if (samplearg != NULL)      /* process -sample if it was present */
+    if (samplearg != NULL)	/* process -sample if it was present */
-      if (!set_sample_factors(cinfo, samplearg))
+      if (! set_sample_factors(cinfo, samplearg))
-        usage();
+	usage();
 
 #ifdef C_PROGRESSIVE_SUPPORTED
-    if (simple_progressive)     /* process -progressive; -scans can override */
+    if (simple_progressive)	/* process -progressive; -scans can override */
       jpeg_simple_progression(cinfo);
 #endif
 
 #ifdef C_MULTISCAN_FILES_SUPPORTED
-    if (scansarg != NULL)       /* process -scans if it was present */
+    if (scansarg != NULL)	/* process -scans if it was present */
-      if (!read_scan_script(cinfo, scansarg))
+      if (! read_scan_script(cinfo, scansarg))
-        usage();
+	usage();
 #endif
   }
 
-  return argn;                  /* return index of next arg (file name) */
+  return argn;			/* return index of next arg (file name) */
 }
 
 
@@ -501,7 +516,7 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
  */
 
 int
-main(int argc, char **argv)
+main (int argc, char **argv)
 {
   struct jpeg_compress_struct cinfo;
   struct jpeg_error_mgr jerr;
@@ -510,13 +525,8 @@ main(int argc, char **argv)
 #endif
   int file_index;
   cjpeg_source_ptr src_mgr;
-  FILE *input_file;
+  FILE * input_file;
-  FILE *icc_file;
+  FILE * output_file;
-  JOCTET *icc_profile = NULL;
-  long icc_len = 0;
-  FILE *output_file = NULL;
-  unsigned char *outbuffer = NULL;
-  unsigned long outsize = 0;
   JDIMENSION num_scanlines;
 
   /* On Mac, fetch a command line. */
@@ -526,7 +536,7 @@ main(int argc, char **argv)
 
   progname = argv[0];
   if (progname == NULL || progname[0] == 0)
-    progname = "cjpeg";         /* in case C library doesn't provide it */
+    progname = "cjpeg";		/* in case C library doesn't provide it */
 
   /* Initialize the JPEG compression object with default error handling. */
   cinfo.err = jpeg_std_error(&jerr);
@@ -536,6 +546,11 @@ main(int argc, char **argv)
   jerr.first_addon_message = JMSG_FIRSTADDONCODE;
   jerr.last_addon_message = JMSG_LASTADDONCODE;
 
+  /* Now safe to enable signal catcher. */
+#ifdef NEED_SIGNAL_CATCHER
+  enable_signal_catcher((j_common_ptr) &cinfo);
+#endif
+
   /* Initialize JPEG parameters.
    * Much of this may be overridden later.
    * In particular, we don't yet know the input file's color space,
@@ -554,26 +569,24 @@ main(int argc, char **argv)
   file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
 
 #ifdef TWO_FILE_COMMANDLINE
-  if (!memdst) {
+  /* Must have either -outfile switch or explicit output file name */
-    /* Must have either -outfile switch or explicit output file name */
+  if (outfilename == NULL) {
-    if (outfilename == NULL) {
+    if (file_index != argc-2) {
-      if (file_index != argc - 2) {
+      fprintf(stderr, "%s: must name one input and one output file\n",
-        fprintf(stderr, "%s: must name one input and one output file\n",
+	      progname);
-                progname);
+      usage();
-        usage();
+    }
-      }
+    outfilename = argv[file_index+1];
-      outfilename = argv[file_index + 1];
+  } else {
-    } else {
+    if (file_index != argc-1) {
-      if (file_index != argc - 1) {
+      fprintf(stderr, "%s: must name one input and one output file\n",
-        fprintf(stderr, "%s: must name one input and one output file\n",
+	      progname);
-                progname);
+      usage();
-        usage();
-      }
     }
   }
 #else
   /* Unix style: expect zero or one file name */
-  if (file_index < argc - 1) {
+  if (file_index < argc-1) {
     fprintf(stderr, "%s: only one input file\n", progname);
     usage();
   }
@@ -596,40 +609,13 @@ main(int argc, char **argv)
       fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
       exit(EXIT_FAILURE);
     }
-  } else if (!memdst) {
+  } else {
     /* default output file is stdout */
     output_file = write_stdout();
   }
 
-  if (icc_filename != NULL) {
-    if ((icc_file = fopen(icc_filename, READ_BINARY)) == NULL) {
-      fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
-      exit(EXIT_FAILURE);
-    }
-    if (fseek(icc_file, 0, SEEK_END) < 0 ||
-        (icc_len = ftell(icc_file)) < 1 ||
-        fseek(icc_file, 0, SEEK_SET) < 0) {
-      fprintf(stderr, "%s: can't determine size of %s\n", progname,
-              icc_filename);
-      exit(EXIT_FAILURE);
-    }
-    if ((icc_profile = (JOCTET *)malloc(icc_len)) == NULL) {
-      fprintf(stderr, "%s: can't allocate memory for ICC profile\n", progname);
-      fclose(icc_file);
-      exit(EXIT_FAILURE);
-    }
-    if (fread(icc_profile, icc_len, 1, icc_file) < 1) {
-      fprintf(stderr, "%s: can't read ICC profile from %s\n", progname,
-              icc_filename);
-      free(icc_profile);
-      fclose(icc_file);
-      exit(EXIT_FAILURE);
-    }
-    fclose(icc_file);
-  }
-
 #ifdef PROGRESS_REPORT
-  start_progress_monitor((j_common_ptr)&cinfo, &progress);
+  start_progress_monitor((j_common_ptr) &cinfo, &progress);
 #endif
 
   /* Figure out the input file format, and set up to read it. */
@@ -646,23 +632,15 @@ main(int argc, char **argv)
   file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
 
   /* Specify data destination for compression */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
+  jpeg_stdio_dest(&cinfo, output_file);
-  if (memdst)
-    jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
-  else
-#endif
-    jpeg_stdio_dest(&cinfo, output_file);
 
   /* Start compressor */
   jpeg_start_compress(&cinfo, TRUE);
 
-  if (icc_profile != NULL)
-    jpeg_write_icc_profile(&cinfo, icc_profile, (unsigned int)icc_len);
-
   /* Process data */
   while (cinfo.next_scanline < cinfo.image_height) {
     num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
-    (void)jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
+    (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
   }
 
   /* Finish compression and release memory */
@@ -673,23 +651,14 @@ main(int argc, char **argv)
   /* Close files, if we opened them */
   if (input_file != stdin)
     fclose(input_file);
-  if (output_file != stdout && output_file != NULL)
+  if (output_file != stdout)
     fclose(output_file);
 
 #ifdef PROGRESS_REPORT
-  end_progress_monitor((j_common_ptr)&cinfo);
+  end_progress_monitor((j_common_ptr) &cinfo);
 #endif
 
-  if (memdst) {
-    fprintf(stderr, "Compressed size:  %lu bytes\n", outsize);
-    if (outbuffer != NULL)
-      free(outbuffer);
-  }
-
-  if (icc_profile != NULL)
-    free(icc_profile);
-
   /* All done. */
   exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
-  return 0;                     /* suppress no-return-value warnings */
+  return 0;			/* suppress no-return-value warnings */
 }

ckconfig.c

@@ -0,0 +1,402 @@
+/*
+ * ckconfig.c
+ *
+ * Copyright (C) 1991-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ */
+
+/*
+ * This program is intended to help you determine how to configure the JPEG
+ * software for installation on a particular system.  The idea is to try to
+ * compile and execute this program.  If your compiler fails to compile the
+ * program, make changes as indicated in the comments below.  Once you can
+ * compile the program, run it, and it will produce a "jconfig.h" file for
+ * your system.
+ *
+ * As a general rule, each time you try to compile this program,
+ * pay attention only to the *first* error message you get from the compiler.
+ * Many C compilers will issue lots of spurious error messages once they
+ * have gotten confused.  Go to the line indicated in the first error message,
+ * and read the comments preceding that line to see what to change.
+ *
+ * Almost all of the edits you may need to make to this program consist of
+ * changing a line that reads "#define SOME_SYMBOL" to "#undef SOME_SYMBOL",
+ * or vice versa.  This is called defining or undefining that symbol.
+ */
+
+
+/* First we must see if your system has the include files we need.
+ * We start out with the assumption that your system has all the ANSI-standard
+ * include files.  If you get any error trying to include one of these files,
+ * undefine the corresponding HAVE_xxx symbol.
+ */
+
+#define HAVE_STDDEF_H		/* replace 'define' by 'undef' if error here */
+#ifdef HAVE_STDDEF_H		/* next line will be skipped if you undef... */
+#include <stddef.h>
+#endif
+
+#define HAVE_STDLIB_H		/* same thing for stdlib.h */
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#include <stdio.h>		/* If you ain't got this, you ain't got C. */
+
+/* We have to see if your string functions are defined by
+ * strings.h (old BSD convention) or string.h (everybody else).
+ * We try the non-BSD convention first; define NEED_BSD_STRINGS
+ * if the compiler says it can't find string.h.
+ */
+
+#undef NEED_BSD_STRINGS
+
+#ifdef NEED_BSD_STRINGS
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+
+/* On some systems (especially older Unix machines), type size_t is
+ * defined only in the include file <sys/types.h>.  If you get a failure
+ * on the size_t test below, try defining NEED_SYS_TYPES_H.
+ */
+
+#undef NEED_SYS_TYPES_H		/* start by assuming we don't need it */
+#ifdef NEED_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+
+/* Usually type size_t is defined in one of the include files we've included
+ * above.  If not, you'll get an error on the "typedef size_t my_size_t;" line.
+ * In that case, first try defining NEED_SYS_TYPES_H just above.
+ * If that doesn't work, you'll have to search through your system library
+ * to figure out which include file defines "size_t".  Look for a line that
+ * says "typedef something-or-other size_t;".  Then, change the line below
+ * that says "#include <someincludefile.h>" to instead include the file
+ * you found size_t in, and define NEED_SPECIAL_INCLUDE.  If you can't find
+ * type size_t anywhere, try replacing "#include <someincludefile.h>" with
+ * "typedef unsigned int size_t;".
+ */
+
+#undef NEED_SPECIAL_INCLUDE	/* assume we DON'T need it, for starters */
+
+#ifdef NEED_SPECIAL_INCLUDE
+#include <someincludefile.h>
+#endif
+
+typedef size_t my_size_t;	/* The payoff: do we have size_t now? */
+
+
+/* The next question is whether your compiler supports ANSI-style function
+ * prototypes.  You need to know this in order to choose between using
+ * makefile.ansi and using makefile.unix.
+ * The #define line below is set to assume you have ANSI function prototypes.
+ * If you get an error in this group of lines, undefine HAVE_PROTOTYPES.
+ */
+
+#define HAVE_PROTOTYPES
+
+#ifdef HAVE_PROTOTYPES
+int testfunction (int arg1, int * arg2); /* check prototypes */
+
+struct methods_struct {		/* check method-pointer declarations */
+  int (*error_exit) (char *msgtext);
+  int (*trace_message) (char *msgtext);
+  int (*another_method) (void);
+};
+
+int testfunction (int arg1, int * arg2) /* check definitions */
+{
+  return arg2[arg1];
+}
+
+int test2function (void)	/* check void arg list */
+{
+  return 0;
+}
+#endif
+
+
+/* Now we want to find out if your compiler knows what "unsigned char" means.
+ * If you get an error on the "unsigned char un_char;" line,
+ * then undefine HAVE_UNSIGNED_CHAR.
+ */
+
+#define HAVE_UNSIGNED_CHAR
+
+#ifdef HAVE_UNSIGNED_CHAR
+unsigned char un_char;
+#endif
+
+
+/* Now we want to find out if your compiler knows what "unsigned short" means.
+ * If you get an error on the "unsigned short un_short;" line,
+ * then undefine HAVE_UNSIGNED_SHORT.
+ */
+
+#define HAVE_UNSIGNED_SHORT
+
+#ifdef HAVE_UNSIGNED_SHORT
+unsigned short un_short;
+#endif
+
+
+/* Now we want to find out if your compiler understands type "void".
+ * If you get an error anywhere in here, undefine HAVE_VOID.
+ */
+
+#define HAVE_VOID
+
+#ifdef HAVE_VOID
+/* Caution: a C++ compiler will insist on complete prototypes */
+typedef void * void_ptr;	/* check void * */
+#ifdef HAVE_PROTOTYPES		/* check ptr to function returning void */
+typedef void (*void_func) (int a, int b);
+#else
+typedef void (*void_func) ();
+#endif
+
+#ifdef HAVE_PROTOTYPES		/* check void function result */
+void test3function (void_ptr arg1, void_func arg2)
+#else
+void test3function (arg1, arg2)
+     void_ptr arg1;
+     void_func arg2;
+#endif
+{
+  char * locptr = (char *) arg1; /* check casting to and from void * */
+  arg1 = (void *) locptr;
+  (*arg2) (1, 2);		/* check call of fcn returning void */
+}
+#endif
+
+
+/* Now we want to find out if your compiler knows what "const" means.
+ * If you get an error here, undefine HAVE_CONST.
+ */
+
+#define HAVE_CONST
+
+#ifdef HAVE_CONST
+static const int carray[3] = {1, 2, 3};
+
+#ifdef HAVE_PROTOTYPES
+int test4function (const int arg1)
+#else
+int test4function (arg1)
+     const int arg1;
+#endif
+{
+  return carray[arg1];
+}
+#endif
+
+
+/* If you get an error or warning about this structure definition,
+ * define INCOMPLETE_TYPES_BROKEN.
+ */
+
+#undef INCOMPLETE_TYPES_BROKEN
+
+#ifndef INCOMPLETE_TYPES_BROKEN
+typedef struct undefined_structure * undef_struct_ptr;
+#endif
+
+
+/* If you get an error about duplicate names,
+ * define NEED_SHORT_EXTERNAL_NAMES.
+ */
+
+#undef NEED_SHORT_EXTERNAL_NAMES
+
+#ifndef NEED_SHORT_EXTERNAL_NAMES
+
+int possibly_duplicate_function ()
+{
+  return 0;
+}
+
+int possibly_dupli_function ()
+{
+  return 1;
+}
+
+#endif
+
+
+
+/************************************************************************
+ *  OK, that's it.  You should not have to change anything beyond this
+ *  point in order to compile and execute this program.  (You might get
+ *  some warnings, but you can ignore them.)
+ *  When you run the program, it will make a couple more tests that it
+ *  can do automatically, and then it will create jconfig.h and print out
+ *  any additional suggestions it has.
+ ************************************************************************
+ */
+
+
+#ifdef HAVE_PROTOTYPES
+int is_char_signed (int arg)
+#else
+int is_char_signed (arg)
+     int arg;
+#endif
+{
+  if (arg == 189) {		/* expected result for unsigned char */
+    return 0;			/* type char is unsigned */
+  }
+  else if (arg != -67) {	/* expected result for signed char */
+    printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n");
+    printf("I fear the JPEG software will not work at all.\n\n");
+  }
+  return 1;			/* assume char is signed otherwise */
+}
+
+
+#ifdef HAVE_PROTOTYPES
+int is_shifting_signed (long arg)
+#else
+int is_shifting_signed (arg)
+     long arg;
+#endif
+/* See whether right-shift on a long is signed or not. */
+{
+  long res = arg >> 4;
+
+  if (res == -0x7F7E80CL) {	/* expected result for signed shift */
+    return 1;			/* right shift is signed */
+  }
+  /* see if unsigned-shift hack will fix it. */
+  /* we can't just test exact value since it depends on width of long... */
+  res |= (~0L) << (32-4);
+  if (res == -0x7F7E80CL) {	/* expected result now? */
+    return 0;			/* right shift is unsigned */
+  }
+  printf("Right shift isn't acting as I expect it to.\n");
+  printf("I fear the JPEG software will not work at all.\n\n");
+  return 0;			/* try it with unsigned anyway */
+}
+
+
+#ifdef HAVE_PROTOTYPES
+int main (int argc, char ** argv)
+#else
+int main (argc, argv)
+     int argc;
+     char ** argv;
+#endif
+{
+  char signed_char_check = (char) (-67);
+  FILE *outfile;
+
+  /* Attempt to write jconfig.h */
+  if ((outfile = fopen("jconfig.h", "w")) == NULL) {
+    printf("Failed to write jconfig.h\n");
+    return 1;
+  }
+
+  /* Write out all the info */
+  fprintf(outfile, "/* jconfig.h --- generated by ckconfig.c */\n");
+  fprintf(outfile, "/* see jconfig.txt for explanations */\n\n");
+#ifdef HAVE_PROTOTYPES
+  fprintf(outfile, "#define HAVE_PROTOTYPES\n");
+#else
+  fprintf(outfile, "#undef HAVE_PROTOTYPES\n");
+#endif
+#ifdef HAVE_UNSIGNED_CHAR
+  fprintf(outfile, "#define HAVE_UNSIGNED_CHAR\n");
+#else
+  fprintf(outfile, "#undef HAVE_UNSIGNED_CHAR\n");
+#endif
+#ifdef HAVE_UNSIGNED_SHORT
+  fprintf(outfile, "#define HAVE_UNSIGNED_SHORT\n");
+#else
+  fprintf(outfile, "#undef HAVE_UNSIGNED_SHORT\n");
+#endif
+#ifdef HAVE_VOID
+  fprintf(outfile, "/* #define void char */\n");
+#else
+  fprintf(outfile, "#define void char\n");
+#endif
+#ifdef HAVE_CONST
+  fprintf(outfile, "/* #define const */\n");
+#else
+  fprintf(outfile, "#define const\n");
+#endif
+  if (is_char_signed((int) signed_char_check))
+    fprintf(outfile, "#undef CHAR_IS_UNSIGNED\n");
+  else
+    fprintf(outfile, "#define CHAR_IS_UNSIGNED\n");
+#ifdef HAVE_STDDEF_H
+  fprintf(outfile, "#define HAVE_STDDEF_H\n");
+#else
+  fprintf(outfile, "#undef HAVE_STDDEF_H\n");
+#endif
+#ifdef HAVE_STDLIB_H
+  fprintf(outfile, "#define HAVE_STDLIB_H\n");
+#else
+  fprintf(outfile, "#undef HAVE_STDLIB_H\n");
+#endif
+#ifdef NEED_BSD_STRINGS
+  fprintf(outfile, "#define NEED_BSD_STRINGS\n");
+#else
+  fprintf(outfile, "#undef NEED_BSD_STRINGS\n");
+#endif
+#ifdef NEED_SYS_TYPES_H
+  fprintf(outfile, "#define NEED_SYS_TYPES_H\n");
+#else
+  fprintf(outfile, "#undef NEED_SYS_TYPES_H\n");
+#endif
+  fprintf(outfile, "#undef NEED_FAR_POINTERS\n");
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+  fprintf(outfile, "#define NEED_SHORT_EXTERNAL_NAMES\n");
+#else
+  fprintf(outfile, "#undef NEED_SHORT_EXTERNAL_NAMES\n");
+#endif
+#ifdef INCOMPLETE_TYPES_BROKEN
+  fprintf(outfile, "#define INCOMPLETE_TYPES_BROKEN\n");
+#else
+  fprintf(outfile, "#undef INCOMPLETE_TYPES_BROKEN\n");
+#endif
+  fprintf(outfile, "\n#ifdef JPEG_INTERNALS\n\n");
+  if (is_shifting_signed(-0x7F7E80B1L))
+    fprintf(outfile, "#undef RIGHT_SHIFT_IS_UNSIGNED\n");
+  else
+    fprintf(outfile, "#define RIGHT_SHIFT_IS_UNSIGNED\n");
+  fprintf(outfile, "\n#endif /* JPEG_INTERNALS */\n");
+  fprintf(outfile, "\n#ifdef JPEG_CJPEG_DJPEG\n\n");
+  fprintf(outfile, "#define BMP_SUPPORTED		/* BMP image file format */\n");
+  fprintf(outfile, "#define GIF_SUPPORTED		/* GIF image file format */\n");
+  fprintf(outfile, "#define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */\n");
+  fprintf(outfile, "#undef RLE_SUPPORTED		/* Utah RLE image file format */\n");
+  fprintf(outfile, "#define TARGA_SUPPORTED		/* Targa image file format */\n\n");
+  fprintf(outfile, "#undef TWO_FILE_COMMANDLINE	/* You may need this on non-Unix systems */\n");
+  fprintf(outfile, "#undef NEED_SIGNAL_CATCHER	/* Define this if you use jmemname.c */\n");
+  fprintf(outfile, "#undef DONT_USE_B_MODE\n");
+  fprintf(outfile, "/* #define PROGRESS_REPORT */	/* optional */\n");
+  fprintf(outfile, "\n#endif /* JPEG_CJPEG_DJPEG */\n");
+
+  /* Close the jconfig.h file */
+  fclose(outfile);
+
+  /* User report */
+  printf("Configuration check for Independent JPEG Group's software done.\n");
+  printf("\nI have written the jconfig.h file for you.\n\n");
+#ifdef HAVE_PROTOTYPES
+  printf("You should use makefile.ansi as the starting point for your Makefile.\n");
+#else
+  printf("You should use makefile.unix as the starting point for your Makefile.\n");
+#endif
+
+#ifdef NEED_SPECIAL_INCLUDE
+  printf("\nYou'll need to change jconfig.h to include the system include file\n");
+  printf("that you found type size_t in, or add a direct definition of type\n");
+  printf("size_t if that's what you used.  Just add it to the end.\n");
+#endif
+
+  return 0;
+}

cmakescripts/BuildPackages.cmake

@@ -1,182 +0,0 @@
-# This file is included from the top-level CMakeLists.txt.  We just store it
-# here to avoid cluttering up that file.
-
-set(PKGNAME ${CMAKE_PROJECT_NAME} CACHE STRING
-  "Distribution package name (default: ${CMAKE_PROJECT_NAME})")
-set(PKGVENDOR "The ${CMAKE_PROJECT_NAME} Project" CACHE STRING
-  "Vendor name to be included in distribution package descriptions (default: The ${CMAKE_PROJECT_NAME} Project)")
-set(PKGURL "http://www.${CMAKE_PROJECT_NAME}.org" CACHE STRING
-  "URL of project web site to be included in distribution package descriptions (default: http://www.${CMAKE_PROJECT_NAME}.org)")
-set(PKGEMAIL "information@${CMAKE_PROJECT_NAME}.org" CACHE STRING
-  "E-mail of project maintainer to be included in distribution package descriptions (default: information@${CMAKE_PROJECT_NAME}.org")
-set(PKGID "com.${CMAKE_PROJECT_NAME}.${PKGNAME}" CACHE STRING
-  "Globally unique package identifier (reverse DNS notation) (default: com.${CMAKE_PROJECT_NAME}.${PKGNAME})")
-
-
-###############################################################################
-# Linux RPM and DEB
-###############################################################################
-
-if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
-
-set(RPMARCH ${CMAKE_SYSTEM_PROCESSOR})
-if(CPU_TYPE STREQUAL "x86_64")
-  set(DEBARCH amd64)
-elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "armv7*")
-  set(DEBARCH armhf)
-elseif(CPU_TYPE STREQUAL "arm64")
-  set(DEBARCH ${CPU_TYPE})
-elseif(CPU_TYPE STREQUAL "arm")
-  set(DEBARCH armel)
-elseif(CMAKE_SYSTEM_PROCESSOR_LC STREQUAL "ppc64le")
-  set(DEBARCH ppc64el)
-elseif(CPU_TYPE STREQUAL "powerpc" AND BITS EQUAL 32)
-  set(RPMARCH ppc)
-  set(DEBARCH ppc)
-else()
-  set(DEBARCH ${CMAKE_SYSTEM_PROCESSOR})
-endif()
-message(STATUS "RPM architecture = ${RPMARCH}, DEB architecture = ${DEBARCH}")
-
-# Re-set CMAKE_POSITION_INDEPENDENT_CODE so that the RPM spec file works
-# properly
-boolean_number(CMAKE_POSITION_INDEPENDENT_CODE)
-
-configure_file(release/makerpm.in pkgscripts/makerpm)
-configure_file(release/rpm.spec.in pkgscripts/rpm.spec @ONLY)
-
-add_custom_target(rpm sh pkgscripts/makerpm
-  SOURCES pkgscripts/makerpm)
-
-configure_file(release/makesrpm.in pkgscripts/makesrpm)
-
-add_custom_target(srpm sh pkgscripts/makesrpm
-  SOURCES pkgscripts/makesrpm
-  DEPENDS dist)
-
-configure_file(release/makedpkg.in pkgscripts/makedpkg)
-configure_file(release/deb-control.in pkgscripts/deb-control)
-
-add_custom_target(deb sh pkgscripts/makedpkg
-  SOURCES pkgscripts/makedpkg)
-
-endif() # Linux
-
-
-###############################################################################
-# Windows installer (NullSoft Installer)
-###############################################################################
-
-if(WIN32)
-
-if(MSVC)
-  set(INST_PLATFORM "Visual C++")
-  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-vc)
-  set(INST_REG_NAME ${CMAKE_PROJECT_NAME})
-elseif(MINGW)
-  set(INST_PLATFORM GCC)
-  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-gcc)
-  set(INST_REG_NAME ${CMAKE_PROJECT_NAME}-gcc)
-  set(INST_DEFS -DGCC)
-endif()
-
-if(BITS EQUAL 64)
-  set(INST_PLATFORM "${INST_PLATFORM} 64-bit")
-  set(INST_NAME ${INST_NAME}64)
-  set(INST_REG_NAME ${INST_DIR}64)
-  set(INST_DEFS ${INST_DEFS} -DWIN64)
-endif()
-
-if(WITH_JAVA)
-  set(INST_DEFS ${INST_DEFS} -DJAVA)
-endif()
-
-if(MSVC_IDE)
-  set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=${CMAKE_CFG_INTDIR}\\")
-else()
-  set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=")
-endif()
-
-string(REGEX REPLACE "/" "\\\\" INST_DIR ${CMAKE_INSTALL_PREFIX})
-
-configure_file(release/installer.nsi.in installer.nsi @ONLY)
-
-if(WITH_JAVA)
-  set(JAVA_DEPEND turbojpeg-java)
-endif()
-add_custom_target(installer
-  makensis -nocd ${INST_DEFS} installer.nsi
-  DEPENDS jpeg jpeg-static turbojpeg turbojpeg-static rdjpgcom wrjpgcom
-    cjpeg djpeg jpegtran tjbench ${JAVA_DEPEND}
-  SOURCES installer.nsi)
-
-endif() # WIN32
-
-
-###############################################################################
-# Cygwin Package
-###############################################################################
-
-if(CYGWIN)
-
-configure_file(release/makecygwinpkg.in pkgscripts/makecygwinpkg)
-
-add_custom_target(cygwinpkg sh pkgscripts/makecygwinpkg)
-
-endif() # CYGWIN
-
-
-###############################################################################
-# Mac DMG
-###############################################################################
-
-if(APPLE)
-
-set(DEFAULT_OSX_32BIT_BUILD ${CMAKE_SOURCE_DIR}/osxx86)
-set(OSX_32BIT_BUILD ${DEFAULT_OSX_32BIT_BUILD} CACHE PATH
-  "Directory containing 32-bit (i386) Mac build to include in universal binaries (default: ${DEFAULT_OSX_32BIT_BUILD})")
-set(DEFAULT_IOS_ARMV7_BUILD ${CMAKE_SOURCE_DIR}/iosarmv7)
-set(IOS_ARMV7_BUILD ${DEFAULT_IOS_ARMV7_BUILD} CACHE PATH
-  "Directory containing ARMv7 iOS build to include in universal binaries (default: ${DEFAULT_IOS_ARMV7_BUILD})")
-set(DEFAULT_IOS_ARMV7S_BUILD ${CMAKE_SOURCE_DIR}/iosarmv7s)
-set(IOS_ARMV7S_BUILD ${DEFAULT_IOS_ARMV7S_BUILD} CACHE PATH
-  "Directory containing ARMv7s iOS build to include in universal binaries (default: ${DEFAULT_IOS_ARMV7S_BUILD})")
-set(DEFAULT_IOS_ARMV8_BUILD ${CMAKE_SOURCE_DIR}/iosarmv8)
-set(IOS_ARMV8_BUILD ${DEFAULT_IOS_ARMV8_BUILD} CACHE PATH
-  "Directory containing ARMv8 iOS build to include in universal binaries (default: ${DEFAULT_IOS_ARMV8_BUILD})")
-
-set(OSX_APP_CERT_NAME "" CACHE STRING
-  "Name of the Developer ID Application certificate (in the macOS keychain) that should be used to sign the libjpeg-turbo DMG.  Leave this blank to generate an unsigned DMG.")
-set(OSX_INST_CERT_NAME "" CACHE STRING
-  "Name of the Developer ID Installer certificate (in the macOS keychain) that should be used to sign the libjpeg-turbo installer package.  Leave this blank to generate an unsigned package.")
-
-configure_file(release/makemacpkg.in pkgscripts/makemacpkg)
-configure_file(release/Distribution.xml.in pkgscripts/Distribution.xml)
-configure_file(release/uninstall.in pkgscripts/uninstall)
-
-add_custom_target(dmg sh pkgscripts/makemacpkg
-  SOURCES pkgscripts/makemacpkg)
-
-add_custom_target(udmg sh pkgscripts/makemacpkg universal
-  SOURCES pkgscripts/makemacpkg)
-
-endif() # APPLE
-
-
-###############################################################################
-# Generic
-###############################################################################
-
-add_custom_target(dist
-  COMMAND git archive --prefix=${CMAKE_PROJECT_NAME}-${VERSION}/ HEAD |
-    gzip > ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-${VERSION}.tar.gz
-    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
-
-configure_file(release/maketarball.in pkgscripts/maketarball)
-
-add_custom_target(tarball sh pkgscripts/maketarball
-  SOURCES pkgscripts/maketarball)
-
-configure_file(release/libjpeg.pc.in pkgscripts/libjpeg.pc @ONLY)
-
-configure_file(release/libturbojpeg.pc.in pkgscripts/libturbojpeg.pc @ONLY)

cmakescripts/GNUInstallDirs.cmake

@@ -1,416 +0,0 @@
-#.rst:
-# GNUInstallDirs
-# --------------
-#
-# Define GNU standard installation directories
-#
-# Provides install directory variables as defined by the
-# `GNU Coding Standards`_.
-#
-# .. _`GNU Coding Standards`: https://www.gnu.org/prep/standards/html_node/Directory-Variables.html
-#
-# Result Variables
-# ^^^^^^^^^^^^^^^^
-#
-# Inclusion of this module defines the following variables:
-#
-# ``CMAKE_INSTALL_<dir>``
-#
-#   Destination for files of a given type.  This value may be passed to
-#   the ``DESTINATION`` options of :command:`install` commands for the
-#   corresponding file type.
-#
-# ``CMAKE_INSTALL_FULL_<dir>``
-#
-#   The absolute path generated from the corresponding ``CMAKE_INSTALL_<dir>``
-#   value.  If the value is not already an absolute path, an absolute path
-#   is constructed typically by prepending the value of the
-#   :variable:`CMAKE_INSTALL_PREFIX` variable.  However, there are some
-#   `special cases`_ as documented below.
-#
-# where ``<dir>`` is one of:
-#
-# ``BINDIR``
-#   user executables (``bin``)
-# ``SBINDIR``
-#   system admin executables (``sbin``)
-# ``LIBEXECDIR``
-#   program executables (``libexec``)
-# ``SYSCONFDIR``
-#   read-only single-machine data (``etc``)
-# ``SHAREDSTATEDIR``
-#   modifiable architecture-independent data (``com``)
-# ``LOCALSTATEDIR``
-#   modifiable single-machine data (``var``)
-# ``LIBDIR``
-#   object code libraries (``lib`` or ``lib64``
-#   or ``lib/<multiarch-tuple>`` on Debian)
-# ``INCLUDEDIR``
-#   C header files (``include``)
-# ``OLDINCLUDEDIR``
-#   C header files for non-gcc (``/usr/include``)
-# ``DATAROOTDIR``
-#   read-only architecture-independent data root (``share``)
-# ``DATADIR``
-#   read-only architecture-independent data (``DATAROOTDIR``)
-# ``INFODIR``
-#   info documentation (``DATAROOTDIR/info``)
-# ``LOCALEDIR``
-#   locale-dependent data (``DATAROOTDIR/locale``)
-# ``MANDIR``
-#   man documentation (``DATAROOTDIR/man``)
-# ``DOCDIR``
-#   documentation root (``DATAROOTDIR/doc/PROJECT_NAME``)
-#
-# If the includer does not define a value the above-shown default will be
-# used and the value will appear in the cache for editing by the user.
-#
-# Special Cases
-# ^^^^^^^^^^^^^
-#
-# The following values of :variable:`CMAKE_INSTALL_PREFIX` are special:
-#
-# ``/``
-#
-#   For ``<dir>`` other than the ``SYSCONFDIR`` and ``LOCALSTATEDIR``,
-#   the value of ``CMAKE_INSTALL_<dir>`` is prefixed with ``usr/`` if
-#   it is not user-specified as an absolute path.  For example, the
-#   ``INCLUDEDIR`` value ``include`` becomes ``usr/include``.
-#   This is required by the `GNU Coding Standards`_, which state:
-#
-#     When building the complete GNU system, the prefix will be empty
-#     and ``/usr`` will be a symbolic link to ``/``.
-#
-# ``/usr``
-#
-#   For ``<dir>`` equal to ``SYSCONFDIR`` or ``LOCALSTATEDIR``, the
-#   ``CMAKE_INSTALL_FULL_<dir>`` is computed by prepending just ``/``
-#   to the value of ``CMAKE_INSTALL_<dir>`` if it is not user-specified
-#   as an absolute path.  For example, the ``SYSCONFDIR`` value ``etc``
-#   becomes ``/etc``.  This is required by the `GNU Coding Standards`_.
-#
-# ``/opt/...``
-#
-#   For ``<dir>`` equal to ``SYSCONFDIR`` or ``LOCALSTATEDIR``, the
-#   ``CMAKE_INSTALL_FULL_<dir>`` is computed by *appending* the prefix
-#   to the value of ``CMAKE_INSTALL_<dir>`` if it is not user-specified
-#   as an absolute path.  For example, the ``SYSCONFDIR`` value ``etc``
-#   becomes ``/etc/opt/...``.  This is defined by the
-#   `Filesystem Hierarchy Standard`_.
-#
-# .. _`Filesystem Hierarchy Standard`: https://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html
-#
-# Macros
-# ^^^^^^
-#
-# .. command:: GNUInstallDirs_get_absolute_install_dir
-#
-#   ::
-#
-#     GNUInstallDirs_get_absolute_install_dir(absvar var)
-#
-#   Set the given variable ``absvar`` to the absolute path contained
-#   within the variable ``var``.  This is to allow the computation of an
-#   absolute path, accounting for all the special cases documented
-#   above.  While this macro is used to compute the various
-#   ``CMAKE_INSTALL_FULL_<dir>`` variables, it is exposed publicly to
-#   allow users who create additional path variables to also compute
-#   absolute paths where necessary, using the same logic.
-
-#=============================================================================
-# Copyright 2016, 2019 D. R. Commander
-# Copyright 2016 Dmitry Marakasov
-# Copyright 2016 Roger Leigh
-# Copyright 2015 Alex Turbov
-# Copyright 2014 Rolf Eike Beer
-# Copyright 2014 Daniele E. Domenichelli
-# Copyright 2013 Dimitri John Ledkov
-# Copyright 2011 Alex Neundorf
-# Copyright 2011 Eric NOULARD
-# Copyright 2011, 2013-2015 Kitware, Inc.
-# Copyright 2011 Nikita Krupen'ko
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# * Redistributions of source code must retain the above copyright
-#   notice, this list of conditions and the following disclaimer.
-#
-# * Redistributions in binary form must reproduce the above copyright
-#   notice, this list of conditions and the following disclaimer in the
-#   documentation and/or other materials provided with the distribution.
-#
-# * Neither the names of Kitware, Inc., the Insight Software Consortium,
-#   nor the names of their contributors may be used to endorse or promote
-#   products derived from this software without specific prior written
-#   permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#=============================================================================
-
-# Installation directories
-#
-
-macro(GNUInstallDirs_set_install_dir var docstring)
-  # If CMAKE_INSTALL_PREFIX changes and CMAKE_INSTALL_*DIR is still set to the
-  # default value, then modify it accordingly.  This presumes that the default
-  # value may change based on the prefix.
-
-  set(_GNUInstallDirs_CMAKE_INSTALL_FORCE_${var} "")
-  if(NOT DEFINED CMAKE_INSTALL_${var})
-    set(_GNUInstallDirs_CMAKE_INSTALL_DEFAULT_${var} 1 CACHE INTERNAL
-      "CMAKE_INSTALL_${var} has default value")
-  elseif(DEFINED _GNUInstallDirs_CMAKE_INSTALL_LAST_DEFAULT_${var} AND
-    NOT "${_GNUInstallDirs_CMAKE_INSTALL_LAST_DEFAULT_${var}}" STREQUAL
-      "${CMAKE_INSTALL_DEFAULT_${var}}" AND
-    _GNUInstallDirs_CMAKE_INSTALL_DEFAULT_${var} AND
-    "${_GNUInstallDirs_CMAKE_INSTALL_LAST_${var}}" STREQUAL
-      "${CMAKE_INSTALL_${var}}")
-    set(_GNUInstallDirs_CMAKE_INSTALL_FORCE_${var} "FORCE")
-  endif()
-
-  set(CMAKE_INSTALL_${var} "${CMAKE_INSTALL_DEFAULT_${var}}" CACHE PATH
-    "${docstring} (Default: ${CMAKE_INSTALL_DEFAULT_${var}})"
-    ${_GNUInstallDirs_CMAKE_INSTALL_FORCE_${var}})
-
-  if(NOT CMAKE_INSTALL_${var} STREQUAL CMAKE_INSTALL_DEFAULT_${var})
-    unset(_GNUInstallDirs_CMAKE_INSTALL_DEFAULT_${var} CACHE)
-  endif()
-
-  # Save for next run
-  set(_GNUInstallDirs_CMAKE_INSTALL_LAST_${var} "${CMAKE_INSTALL_${var}}"
-    CACHE INTERNAL "CMAKE_INSTALL_${var} during last run")
-  set(_GNUInstallDirs_CMAKE_INSTALL_LAST_DEFAULT_${var}
-    "${CMAKE_INSTALL_DEFAULT_${var}}" CACHE INTERNAL
-    "CMAKE_INSTALL_DEFAULT_${var} during last run")
-endmacro()
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_BINDIR)
-  set(CMAKE_INSTALL_DEFAULT_BINDIR "bin")
-endif()
-GNUInstallDirs_set_install_dir(BINDIR
-  "Directory into which user executables should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_SBINDIR)
-  set(CMAKE_INSTALL_DEFAULT_SBINDIR "sbin")
-endif()
-GNUInstallDirs_set_install_dir(SBINDIR
-  "Directory into which system admin executables should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_LIBEXECDIR)
-  set(CMAKE_INSTALL_DEFAULT_LIBEXECDIR "libexec")
-endif()
-GNUInstallDirs_set_install_dir(LIBEXECDIR
-  "Directory under which executables run by other programs should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_SYSCONFDIR)
-  set(CMAKE_INSTALL_DEFAULT_SYSCONFDIR "etc")
-endif()
-GNUInstallDirs_set_install_dir(SYSCONFDIR
-  "Directory into which machine-specific read-only ASCII data and configuration files should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_SHAREDSTATEDIR)
-  set(CMAKE_INSTALL_DEFAULT_SHAREDSTATEDIR "com")
-endif()
-GNUInstallDirs_set_install_dir(SHAREDSTATEDIR
-  "Directory into which architecture-independent run-time-modifiable data files should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_LOCALSTATEDIR)
-  set(CMAKE_INSTALL_DEFAULT_LOCALSTATEDIR "var")
-endif()
-GNUInstallDirs_set_install_dir(LOCALSTATEDIR
-  "Directory into which machine-specific run-time-modifiable data files should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_LIBDIR)
-  set(CMAKE_INSTALL_DEFAULT_LIBDIR "lib")
-  # Override this default 'lib' with 'lib64' iff:
-  #  - we are on Linux system but NOT cross-compiling
-  #  - we are NOT on debian
-  #  - we are on a 64 bits system
-  # reason is: amd64 ABI: http://www.x86-64.org/documentation/abi.pdf
-  # For Debian with multiarch, use 'lib/${CMAKE_LIBRARY_ARCHITECTURE}' if
-  # CMAKE_LIBRARY_ARCHITECTURE is set (which contains e.g. "i386-linux-gnu"
-  # and CMAKE_INSTALL_PREFIX is "/usr"
-  # See http://wiki.debian.org/Multiarch
-  if(CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
-      AND NOT CMAKE_CROSSCOMPILING)
-    if (EXISTS "/etc/debian_version") # is this a debian system ?
-      if(CMAKE_LIBRARY_ARCHITECTURE)
-        if("${CMAKE_INSTALL_PREFIX}" MATCHES "^/usr/?$")
-          set(CMAKE_INSTALL_DEFAULT_LIBDIR "lib/${CMAKE_LIBRARY_ARCHITECTURE}")
-        endif()
-      endif()
-    else() # not debian, rely on CMAKE_SIZEOF_VOID_P:
-      if(NOT DEFINED CMAKE_SIZEOF_VOID_P)
-        message(AUTHOR_WARNING
-          "Unable to determine default CMAKE_INSTALL_LIBDIR directory because no target architecture is known. "
-          "Please enable at least one language before including GNUInstallDirs.")
-      else()
-        if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-          set(CMAKE_INSTALL_DEFAULT_LIBDIR "lib64")
-        endif()
-      endif()
-    endif()
-  endif()
-endif()
-GNUInstallDirs_set_install_dir(LIBDIR
-  "Directory into which object files and object code libraries should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_INCLUDEDIR)
-  set(CMAKE_INSTALL_DEFAULT_INCLUDEDIR "include")
-endif()
-GNUInstallDirs_set_install_dir(INCLUDEDIR
-  "Directory into which C header files should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_OLDINCLUDEDIR)
-  set(CMAKE_INSTALL_DEFAULT_OLDINCLUDEDIR "/usr/include")
-endif()
-GNUInstallDirs_set_install_dir(OLDINCLUDEDIR
-  PATH "Directory into which C header files for non-GCC compilers should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_DATAROOTDIR)
-  set(CMAKE_INSTALL_DEFAULT_DATAROOTDIR "share")
-endif()
-GNUInstallDirs_set_install_dir(DATAROOTDIR
-  "The root of the directory tree for read-only architecture-independent data files")
-
-#-----------------------------------------------------------------------------
-# Values whose defaults are relative to DATAROOTDIR.  Store empty values in
-# the cache and store the defaults in local variables if the cache values are
-# not set explicitly.  This auto-updates the defaults as DATAROOTDIR changes.
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_DATADIR)
-  set(CMAKE_INSTALL_DEFAULT_DATADIR "<CMAKE_INSTALL_DATAROOTDIR>")
-endif()
-GNUInstallDirs_set_install_dir(DATADIR
-  "The directory under which read-only architecture-independent data files should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_INFODIR)
-  if(CMAKE_SYSTEM_NAME MATCHES "^(.*BSD|DragonFly)$")
-    set(CMAKE_INSTALL_DEFAULT_INFODIR "info")
-  else()
-    set(CMAKE_INSTALL_DEFAULT_INFODIR "<CMAKE_INSTALL_DATAROOTDIR>/info")
-  endif()
-endif()
-GNUInstallDirs_set_install_dir(INFODIR
-  "The directory into which info documentation files should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_MANDIR)
-  if(CMAKE_SYSTEM_NAME MATCHES "^(.*BSD|DragonFly)$")
-    set(CMAKE_INSTALL_DEFAULT_MANDIR "man")
-  else()
-    set(CMAKE_INSTALL_DEFAULT_MANDIR "<CMAKE_INSTALL_DATAROOTDIR>/man")
-  endif()
-endif()
-GNUInstallDirs_set_install_dir(MANDIR
-  "The directory under which man pages should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_LOCALEDIR)
-  set(CMAKE_INSTALL_DEFAULT_LOCALEDIR "<CMAKE_INSTALL_DATAROOTDIR>/locale")
-endif()
-GNUInstallDirs_set_install_dir(LOCALEDIR
-  "The directory under which locale-specific message catalogs should be installed")
-
-if(NOT DEFINED CMAKE_INSTALL_DEFAULT_DOCDIR)
-  set(CMAKE_INSTALL_DEFAULT_DOCDIR "<CMAKE_INSTALL_DATAROOTDIR>/doc/${PROJECT_NAME}")
-endif()
-GNUInstallDirs_set_install_dir(DOCDIR
-  "The directory into which documentation files (other than info files) should be installed")
-
-#-----------------------------------------------------------------------------
-
-mark_as_advanced(
-  CMAKE_INSTALL_BINDIR
-  CMAKE_INSTALL_SBINDIR
-  CMAKE_INSTALL_LIBEXECDIR
-  CMAKE_INSTALL_SYSCONFDIR
-  CMAKE_INSTALL_SHAREDSTATEDIR
-  CMAKE_INSTALL_LOCALSTATEDIR
-  CMAKE_INSTALL_LIBDIR
-  CMAKE_INSTALL_INCLUDEDIR
-  CMAKE_INSTALL_OLDINCLUDEDIR
-  CMAKE_INSTALL_DATAROOTDIR
-  CMAKE_INSTALL_DATADIR
-  CMAKE_INSTALL_INFODIR
-  CMAKE_INSTALL_LOCALEDIR
-  CMAKE_INSTALL_MANDIR
-  CMAKE_INSTALL_DOCDIR
-  )
-
-macro(GNUInstallDirs_get_absolute_install_dir absvar var)
-  string(REGEX REPLACE "[<>]" "@" ${var} "${${var}}")
-  # Handle the specific case of an empty CMAKE_INSTALL_DATAROOTDIR
-  if(NOT CMAKE_INSTALL_DATAROOTDIR AND
-    ${var} MATCHES "\@CMAKE_INSTALL_DATAROOTDIR\@/")
-    string(CONFIGURE "${${var}}" ${var} @ONLY)
-    string(REGEX REPLACE "^/" "" ${var} "${${var}}")
-  else()
-    string(CONFIGURE "${${var}}" ${var} @ONLY)
-  endif()
-  if(NOT IS_ABSOLUTE "${${var}}")
-    # Handle special cases:
-    # - CMAKE_INSTALL_PREFIX == /
-    # - CMAKE_INSTALL_PREFIX == /usr
-    # - CMAKE_INSTALL_PREFIX == /opt/...
-    if("${CMAKE_INSTALL_PREFIX}" STREQUAL "/")
-      if("${dir}" STREQUAL "SYSCONFDIR" OR "${dir}" STREQUAL "LOCALSTATEDIR")
-        set(${absvar} "/${${var}}")
-      else()
-        if (NOT "${${var}}" MATCHES "^usr/")
-          set(${var} "usr/${${var}}")
-        endif()
-        set(${absvar} "/${${var}}")
-      endif()
-    elseif("${CMAKE_INSTALL_PREFIX}" MATCHES "^/usr/?$")
-      if("${dir}" STREQUAL "SYSCONFDIR" OR "${dir}" STREQUAL "LOCALSTATEDIR")
-        set(${absvar} "/${${var}}")
-      else()
-        set(${absvar} "${CMAKE_INSTALL_PREFIX}/${${var}}")
-      endif()
-    elseif("${CMAKE_INSTALL_PREFIX}" MATCHES "^/opt/.*")
-      if("${dir}" STREQUAL "SYSCONFDIR" OR "${dir}" STREQUAL "LOCALSTATEDIR")
-        set(${absvar} "/${${var}}${CMAKE_INSTALL_PREFIX}")
-      else()
-        set(${absvar} "${CMAKE_INSTALL_PREFIX}/${${var}}")
-      endif()
-    else()
-      set(${absvar} "${CMAKE_INSTALL_PREFIX}/${${var}}")
-    endif()
-  else()
-    set(${absvar} "${${var}}")
-  endif()
-  string(REGEX REPLACE "/$" "" ${absvar} "${${absvar}}")
-endmacro()
-
-# Result directories
-#
-foreach(dir
-    BINDIR
-    SBINDIR
-    LIBEXECDIR
-    SYSCONFDIR
-    SHAREDSTATEDIR
-    LOCALSTATEDIR
-    LIBDIR
-    INCLUDEDIR
-    OLDINCLUDEDIR
-    DATAROOTDIR
-    DATADIR
-    INFODIR
-    LOCALEDIR
-    MANDIR
-    DOCDIR
-    )
-  GNUInstallDirs_get_absolute_install_dir(CMAKE_INSTALL_FULL_${dir} CMAKE_INSTALL_${dir})
-endforeach()

cmakescripts/cmake_uninstall.cmake.in

@@ -1,24 +0,0 @@
-# This code is from the CMake FAQ
-
-if (NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
-  message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_BINARY_DIR@/install_manifest.txt\"")
-endif(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
-
-file(READ "@CMAKE_BINARY_DIR@/install_manifest.txt" files)
-string(REGEX REPLACE "\n" ";" files "${files}")
-list(REVERSE files)
-foreach (file ${files})
-  message(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
-    if (EXISTS "$ENV{DESTDIR}${file}")
-      execute_process(
-        COMMAND "@CMAKE_COMMAND@" -E remove "$ENV{DESTDIR}${file}"
-        OUTPUT_VARIABLE rm_out
-        RESULT_VARIABLE rm_retval
-      )
-    if(NOT ${rm_retval} EQUAL 0)
-      message(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
-    endif (NOT ${rm_retval} EQUAL 0)
-  else (EXISTS "$ENV{DESTDIR}${file}")
-    message(STATUS "File \"$ENV{DESTDIR}${file}\" does not exist.")
-  endif (EXISTS "$ENV{DESTDIR}${file}")
-endforeach(file)

cmakescripts/testclean.cmake

@@ -1,41 +0,0 @@
-file(GLOB FILES
-  testout*
-  *_GRAY_*.bmp
-  *_GRAY_*.png
-  *_GRAY_*.ppm
-  *_GRAY_*.jpg
-  *_GRAY.yuv
-  *_420_*.bmp
-  *_420_*.png
-  *_420_*.ppm
-  *_420_*.jpg
-  *_420.yuv
-  *_422_*.bmp
-  *_422_*.png
-  *_422_*.ppm
-  *_422_*.jpg
-  *_422.yuv
-  *_444_*.bmp
-  *_444_*.png
-  *_444_*.ppm
-  *_444_*.jpg
-  *_444.yuv
-  *_440_*.bmp
-  *_440_*.png
-  *_440_*.ppm
-  *_440_*.jpg
-  *_440.yuv
-  *_411_*.bmp
-  *_411_*.png
-  *_411_*.ppm
-  *_411_*.jpg
-  *_411.yuv
-  tjbenchtest*.log
-  tjexampletest*.log)
-
-if(NOT FILES STREQUAL "")
-  message(STATUS "Removing test files")
-  file(REMOVE ${FILES})
-else()
-  message(STATUS "No files to remove")
-endif()

cmyk.h

@@ -1,61 +0,0 @@
-/*
- * cmyk.h
- *
- * Copyright (C) 2017-2018, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README.ijg
- * file.
- *
- * This file contains convenience functions for performing quick & dirty
- * CMYK<->RGB conversion.  This algorithm is suitable for testing purposes
- * only.  Properly converting between CMYK and RGB requires a color management
- * system.
- */
-
-#ifndef CMYK_H
-#define CMYK_H
-
-#include <jinclude.h>
-#define JPEG_INTERNALS
-#include <jpeglib.h>
-#include "jconfigint.h"
-
-
-/* Fully reversible */
-
-INLINE
-LOCAL(void)
-rgb_to_cmyk(JSAMPLE r, JSAMPLE g, JSAMPLE b, JSAMPLE *c, JSAMPLE *m,
-            JSAMPLE *y, JSAMPLE *k)
-{
-  double ctmp = 1.0 - ((double)r / 255.0);
-  double mtmp = 1.0 - ((double)g / 255.0);
-  double ytmp = 1.0 - ((double)b / 255.0);
-  double ktmp = MIN(MIN(ctmp, mtmp), ytmp);
-
-  if (ktmp == 1.0) ctmp = mtmp = ytmp = 0.0;
-  else {
-    ctmp = (ctmp - ktmp) / (1.0 - ktmp);
-    mtmp = (mtmp - ktmp) / (1.0 - ktmp);
-    ytmp = (ytmp - ktmp) / (1.0 - ktmp);
-  }
-  *c = (JSAMPLE)(255.0 - ctmp * 255.0 + 0.5);
-  *m = (JSAMPLE)(255.0 - mtmp * 255.0 + 0.5);
-  *y = (JSAMPLE)(255.0 - ytmp * 255.0 + 0.5);
-  *k = (JSAMPLE)(255.0 - ktmp * 255.0 + 0.5);
-}
-
-
-/* Fully reversible only for C/M/Y/K values generated with rgb_to_cmyk() */
-
-INLINE
-LOCAL(void)
-cmyk_to_rgb(JSAMPLE c, JSAMPLE m, JSAMPLE y, JSAMPLE k, JSAMPLE *r, JSAMPLE *g,
-            JSAMPLE *b)
-{
-  *r = (JSAMPLE)((double)c * (double)k / 255.0 + 0.5);
-  *g = (JSAMPLE)((double)m * (double)k / 255.0 + 0.5);
-  *b = (JSAMPLE)((double)y * (double)k / 255.0 + 0.5);
-}
-
-
-#endif /* CMYK_H */

coderules.txt

@@ -1,10 +1,8 @@
 IJG JPEG LIBRARY:  CODING RULES
 
-This file was part of the Independent JPEG Group's software:
 Copyright (C) 1991-1996, Thomas G. Lane.
-It was modified by The libjpeg-turbo Project to include only information
+This file is part of the Independent JPEG Group's software.
-relevant to libjpeg-turbo.
+For conditions of distribution and use, see the accompanying README file.
-For conditions of distribution and use, see the accompanying README.ijg file.
 
 
 Since numerous people will be contributing code and bug fixes, it's important
@@ -23,18 +21,33 @@ Block comments should be laid out thusly:
  */
 
 We indent statements in K&R style, e.g.,
-        if (test) {
+	if (test) {
-          then-part;
+	  then-part;
-        } else {
+	} else {
-          else-part;
+	  else-part;
-        }
+	}
 with two spaces per indentation level.  (This indentation convention is
 handled automatically by GNU Emacs and many other text editors.)
 
 Multi-word names should be written in lower case with underscores, e.g.,
 multi_word_name (not multiWordName).  Preprocessor symbols and enum constants
 are similar but upper case (MULTI_WORD_NAME).  Names should be unique within
-the first fifteen characters.
+the first fifteen characters.  (On some older systems, global names must be
+unique within six characters.  We accommodate this without cluttering the
+source code by using macros to substitute shorter names.)
+
+We use function prototypes everywhere; we rely on automatic source code
+transformation to feed prototype-less C compilers.  Transformation is done
+by the simple and portable tool 'ansi2knr.c' (courtesy of Ghostscript).
+ansi2knr is not very bright, so it imposes a format requirement on function
+declarations: the function name MUST BEGIN IN COLUMN 1.  Thus all functions
+should be written in the following style:
+
+LOCAL(int *)
+function_name (int a, char *b)
+{
+    code...
+}
 
 Note that each function definition must begin with GLOBAL(type), LOCAL(type),
 or METHODDEF(type).  These macros expand to "static type" or just "type" as
@@ -42,8 +55,32 @@ appropriate.  They provide a readable indication of the routine's usage and
 can readily be changed for special needs.  (For instance, special linkage
 keywords can be inserted for use in Windows DLLs.)
 
-A similar solution is used for external function declarations (see the EXTERN
+ansi2knr does not transform method declarations (function pointers in
-macro.)
+structs).  We handle these with a macro JMETHOD, defined as
+	#ifdef HAVE_PROTOTYPES
+	#define JMETHOD(type,methodname,arglist)  type (*methodname) arglist
+	#else
+	#define JMETHOD(type,methodname,arglist)  type (*methodname) ()
+	#endif
+which is used like this:
+	struct function_pointers {
+	  JMETHOD(void, init_entropy_encoder, (int somearg, jparms *jp));
+	  JMETHOD(void, term_entropy_encoder, (void));
+	};
+Note the set of parentheses surrounding the parameter list.
+
+A similar solution is used for forward and external function declarations
+(see the EXTERN and JPP macros).
+
+If the code is to work on non-ANSI compilers, we cannot rely on a prototype
+declaration to coerce actual parameters into the right types.  Therefore, use
+explicit casts on actual parameters whenever the actual parameter type is not
+identical to the formal parameter.  Beware of implicit conversions to "int".
+
+It seems there are some non-ANSI compilers in which the sizeof() operator
+is defined to return int, yet size_t is defined as long.  Needless to say,
+this is brain-damaged.  Always use the SIZEOF() macro in place of sizeof(),
+so that the result is guaranteed to be of type size_t.
 
 
 The JPEG library is intended to be used within larger programs.  Furthermore,
@@ -57,7 +94,9 @@ pass these through the common routines provided.
 wherever possible.  (Note that our method-based calling conventions help this
 a lot: in many modules only the initialization function will ever need to be
 called directly, so only that function need be externally visible.)  All
-global function names should begin with "jpeg_".
+global function names should begin with "jpeg_", and should have an
+abbreviated name (unique in the first six characters) substituted by macro
+when NEED_SHORT_EXTERNAL_NAMES is set.
 
 3. Don't use global variables; anything that must be used in another module
 should be in the common data structures.
@@ -68,9 +107,10 @@ the system architecture document, structure.txt).
 
 5. Source file names should begin with "j" for files that are part of the
 library proper; source files that are not part of the library, such as cjpeg.c
-and djpeg.c, do not begin with "j".  Keep compression and decompression code in
+and djpeg.c, do not begin with "j".  Keep source file names to eight
-separate source files --- some applications may want only one half of the
+characters (plus ".c" or ".h", etc) to make life easy for MS-DOSers.  Keep
-library.
+compression and decompression code in separate source files --- some
+applications may want only one half of the library.
 
 Note: these rules (particularly #4) are not followed religiously in the
 modules that are used in cjpeg/djpeg but are not part of the JPEG library

compile

@@ -0,0 +1,348 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2016-01-11.22; # UTC
+
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

configure.ac

@@ -0,0 +1,365 @@
+# IJG auto-configuration source file.
+# Process this file with autoconf to produce a configure script.
+
+#
+# Configure script for IJG libjpeg
+#
+
+AC_INIT([libjpeg], [9.3.0])
+
+# Directory where autotools helper scripts lives.
+AC_CONFIG_AUX_DIR([.])
+
+# Generate configuration headers.
+AC_CONFIG_HEADERS([jconfig.h:jconfig.cfg])
+
+# Hack: disable autoheader so that it doesn't overwrite our cfg template.
+AUTOHEADER="echo autoheader ignored"
+
+# Check system type
+AC_CANONICAL_TARGET
+
+# Initialize Automake
+# Don't require all the GNU mandated files
+AM_INIT_AUTOMAKE([-Wall -Werror no-dist foreign])
+
+# Make --enable-silent-rules the default.
+# To get verbose build output you may configure
+# with --disable-silent-rules or use "make V=1".
+AM_SILENT_RULES([yes])
+
+# Add configure option --enable-maintainer-mode which enables
+# dependency checking and generation useful to package maintainers.
+# This is made an option to avoid confusing end users.
+AM_MAINTAINER_MODE
+
+# Check for programs
+AC_PROG_CC
+AC_PROG_CC_STDC
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_MAKE_SET
+AC_PROG_LN_S
+AM_PROG_AR
+
+# Check if LD supports linker scripts,
+# and define automake conditional HAVE_LD_VERSION_SCRIPT if so.
+AC_ARG_ENABLE([ld-version-script],
+  AS_HELP_STRING([--enable-ld-version-script],
+    [enable linker version script (default is enabled when possible)]),
+    [have_ld_version_script=$enableval], [])
+if test -z "$have_ld_version_script"; then
+  AC_MSG_CHECKING([if LD -Wl,--version-script works])
+  save_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
+  cat > conftest.map <<EOF
+VERS_1 {
+        global: sym;
+};
+
+VERS_2 {
+        global: sym;
+} VERS_1;
+EOF
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
+                 [have_ld_version_script=yes], [have_ld_version_script=no])
+  rm -f conftest.map
+  LDFLAGS="$save_LDFLAGS"
+  AC_MSG_RESULT($have_ld_version_script)
+fi
+AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
+
+# See if compiler supports prototypes.
+AC_MSG_CHECKING([for function prototypes])
+AC_CACHE_VAL([ijg_cv_have_prototypes],
+[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+int testfunction (int arg1, int * arg2); /* check prototypes */
+struct methods_struct {		/* check method-pointer declarations */
+  int (*error_exit) (char *msgtext);
+  int (*trace_message) (char *msgtext);
+  int (*another_method) (void);
+};
+int testfunction (int arg1, int * arg2) /* check definitions */
+{ return arg2[arg1]; }
+int test2function (void)	/* check void arg list */
+{ return 0; }
+]])],
+          [ijg_cv_have_prototypes=yes],
+          [ijg_cv_have_prototypes=no])])
+AC_MSG_RESULT([$ijg_cv_have_prototypes])
+if test $ijg_cv_have_prototypes = yes; then
+  AC_DEFINE([HAVE_PROTOTYPES],[1],[Compiler supports function prototypes.])
+else
+  AC_MSG_WARN([Your compiler does not seem to know about function prototypes.
+    Perhaps it needs a special switch to enable ANSI C mode.
+    If so, we recommend running configure like this:
+       ./configure  CC='cc -switch'
+    where -switch is the proper switch.])
+fi
+
+# Check header files
+AC_CHECK_HEADERS([stddef.h stdlib.h locale.h])
+AC_CHECK_HEADER([string.h], [],
+ [AC_DEFINE([NEED_BSD_STRINGS], [1],
+            [Compiler has <strings.h> rather than standard <string.h>.])])
+
+# See whether type size_t is defined in any ANSI-standard places;
+# if not, perhaps it is defined in <sys/types.h>.
+AC_MSG_CHECKING([for size_t])
+AC_TRY_COMPILE([
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <stdio.h>
+#ifdef NEED_BSD_STRINGS
+#include <strings.h>
+#else
+#include <string.h>
+#endif
+typedef size_t my_size_t;
+],
+      [ my_size_t foovar; ],
+      [ijg_size_t_ok=yes],
+      [ijg_size_t_ok="not ANSI, perhaps it is in sys/types.h"])
+AC_MSG_RESULT([$ijg_size_t_ok])
+if test "$ijg_size_t_ok" != yes; then
+  AC_CHECK_HEADER([sys/types.h],
+     [AC_DEFINE([NEED_SYS_TYPES_H], [1],
+                [Need to include <sys/types.h> in order to obtain size_t.])
+      AC_EGREP_CPP([size_t], [#include <sys/types.h>],
+                   [ijg_size_t_ok="size_t is in sys/types.h"],
+                   [ijg_size_t_ok=no])],
+     [ijg_size_t_ok=no])
+  AC_MSG_RESULT([$ijg_size_t_ok])
+  if test "$ijg_size_t_ok" = no; then
+    AC_MSG_WARN([Type size_t is not defined in any of the usual places.
+      Try putting '"typedef unsigned int size_t;"' in jconfig.h.])
+  fi
+fi
+
+# Check compiler characteristics
+AC_MSG_CHECKING([for type unsigned char])
+AC_TRY_COMPILE([], [ unsigned char un_char; ],
+ [AC_MSG_RESULT(yes)
+  AC_DEFINE([HAVE_UNSIGNED_CHAR], [1],
+            [Compiler supports 'unsigned char'.])],
+ [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([for type unsigned short])
+AC_TRY_COMPILE([], [ unsigned short un_short; ],
+  [AC_MSG_RESULT(yes)
+   AC_DEFINE([HAVE_UNSIGNED_SHORT], [1],
+             [Compiler supports 'unsigned short'.])],
+  [AC_MSG_RESULT(no)])
+
+AC_MSG_CHECKING([for type void])
+AC_TRY_COMPILE([
+/* Caution: a C++ compiler will insist on valid prototypes */
+typedef void * void_ptr;	/* check void * */
+#ifdef HAVE_PROTOTYPES		/* check ptr to function returning void */
+typedef void (*void_func) (int a, int b);
+#else
+typedef void (*void_func) ();
+#endif
+
+#ifdef HAVE_PROTOTYPES		/* check void function result */
+void test3function (void_ptr arg1, void_func arg2)
+#else
+void test3function (arg1, arg2)
+     void_ptr arg1;
+     void_func arg2;
+#endif
+{
+  char * locptr = (char *) arg1; /* check casting to and from void * */
+  arg1 = (void *) locptr;
+  (*arg2) (1, 2);		/* check call of fcn returning void */
+}
+], [ ],
+        [AC_MSG_RESULT(yes)],
+        [AC_MSG_RESULT(no)
+         AC_DEFINE([void], [char],
+                   [Define 'void' as 'char' for archaic compilers
+                    that don't understand it.])])
+AC_C_CONST
+
+# Check for non-broken inline under various spellings
+AC_MSG_CHECKING([for inline])
+ijg_cv_inline=""
+AC_TRY_COMPILE([], [} __inline__ int foo() { return 0; }
+int bar() { return foo();], ijg_cv_inline="__inline__",
+[AC_TRY_COMPILE(, [} __inline int foo() { return 0; }
+int bar() { return foo();], ijg_cv_inline="__inline",
+[AC_TRY_COMPILE(, [} inline int foo() { return 0; }
+int bar() { return foo();], ijg_cv_inline="inline")])])
+AC_MSG_RESULT($ijg_cv_inline)
+AC_DEFINE_UNQUOTED([INLINE], [$ijg_cv_inline],
+                   [How to obtain function inlining.])
+
+# We cannot check for bogus warnings, but at least we can check for errors
+AC_MSG_CHECKING([for broken incomplete types])
+AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ],
+               [],
+               [AC_MSG_RESULT(ok)],
+               [AC_MSG_RESULT(broken)
+                AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1],
+                          [Compiler does not support pointers to unspecified
+                           structures.])])
+
+# Test whether global names are unique to at least 15 chars
+AC_MSG_CHECKING([for short external names])
+AC_TRY_LINK([
+int possibly_duplicate_function () { return 0; }
+int possibly_dupli_function () { return 1; }
+], [],
+            [AC_MSG_RESULT(ok)],
+            [AC_MSG_RESULT(short)
+             AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], [1],
+                       [Linker requires that global names be unique in
+                        first 15 characters.])])
+
+# Run-time checks
+AC_MSG_CHECKING([to see if char is signed])
+AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_PROTOTYPES
+int is_char_signed (int arg)
+#else
+int is_char_signed (arg)
+     int arg;
+#endif
+{
+  if (arg == 189) {		/* expected result for unsigned char */
+    return 0;			/* type char is unsigned */
+  }
+  else if (arg != -67) {	/* expected result for signed char */
+    printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n");
+    printf("I fear the JPEG software will not work at all.\n\n");
+  }
+  return 1;			/* assume char is signed otherwise */
+}
+char signed_char_check = (char) (-67);
+int main() {
+  exit(is_char_signed((int) signed_char_check));
+}], [AC_MSG_RESULT(no)
+     AC_DEFINE([CHAR_IS_UNSIGNED], [1],
+               [Characters are unsigned])],
+               [AC_MSG_RESULT(yes)],
+[AC_MSG_WARN([Assuming that char is signed on target machine.
+    If it is unsigned, this will be a little bit inefficient.])
+])
+
+AC_MSG_CHECKING([to see if right shift is signed])
+AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_PROTOTYPES
+int is_shifting_signed (long arg)
+#else
+int is_shifting_signed (arg)
+     long arg;
+#endif
+/* See whether right-shift on a long is signed or not. */
+{
+  long res = arg >> 4;
+
+  if (res == -0x7F7E80CL) {	/* expected result for signed shift */
+    return 1;			/* right shift is signed */
+  }
+  /* see if unsigned-shift hack will fix it. */
+  /* we can't just test exact value since it depends on width of long... */
+  res |= (~0L) << (32-4);
+  if (res == -0x7F7E80CL) {	/* expected result now? */
+    return 0;			/* right shift is unsigned */
+  }
+  printf("Right shift isn't acting as I expect it to.\n");
+  printf("I fear the JPEG software will not work at all.\n\n");
+  return 0;			/* try it with unsigned anyway */
+}
+int main() {
+  exit(is_shifting_signed(-0x7F7E80B1L));
+}],
+      [AC_MSG_RESULT(no)
+       AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], [1],
+                 [Broken compiler shifts signed values as an unsigned shift.])],
+       [AC_MSG_RESULT(yes)],
+       [AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
+
+AC_MSG_CHECKING([to see if fopen accepts b spec])
+AC_TRY_RUN([
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <stdio.h>
+int main() {
+  if (fopen("conftestdata", "wb") != NULL)
+    exit(0);
+  exit(1);
+}],
+          [AC_MSG_RESULT(yes)],
+          [AC_MSG_RESULT(no)
+           AC_DEFINE([DONT_USE_B_MODE], [1],
+                     [Don't open files in binary mode.])],
+          [AC_MSG_RESULT(Assuming that it does.)])
+
+# Configure libtool
+AC_LIBTOOL_WIN32_DLL
+AC_PROG_LIBTOOL
+
+# Select memory manager depending on user input.
+# If no "-enable-maxmem", use jmemnobs
+MEMORYMGR='jmemnobs'
+MAXMEM="no"
+AC_ARG_ENABLE([maxmem],
+[  --enable-maxmem[=N]     enable use of temp files, set max mem usage to N MB],
+[MAXMEM="$enableval"])
+dnl [# support --with-maxmem for backwards compatibility with IJG V5.]
+dnl AC_ARG_WITH(maxmem, , MAXMEM="$withval")
+if test "x$MAXMEM" = xyes; then
+  MAXMEM=1
+fi
+if test "x$MAXMEM" != xno; then
+  if test -n "`echo $MAXMEM | sed 's/[[0-9]]//g'`"; then
+    AC_MSG_ERROR(non-numeric argument to --enable-maxmem)
+  fi
+  DEFAULTMAXMEM=`expr $MAXMEM \* 1048576`
+  AC_DEFINE_UNQUOTED([DEFAULT_MAX_MEM], [${DEFAULTMAXMEM}],
+                     [Maximum data space library will allocate.])
+  AC_MSG_CHECKING([for 'tmpfile()'])
+  AC_TRY_LINK([#include <stdio.h>], [ FILE * tfile = tmpfile(); ],
+    [AC_MSG_RESULT(yes)
+    MEMORYMGR='jmemansi'],
+    [AC_MSG_RESULT(no)
+    dnl if tmpfile is not present, must use jmemname.
+    MEMORYMGR='jmemname'
+
+    # Test for the need to remove temporary files using a signal handler
+    # (for cjpeg/djpeg)
+    AC_DEFINE([NEED_SIGNAL_CATCHER], [1],
+              [Need signal handler to clean up temporary files.])
+    AC_MSG_CHECKING([for 'mktemp()'])
+    AC_TRY_LINK([], [ char fname[80]; mktemp(fname); ],
+                [AC_MSG_RESULT(yes)],
+                [AC_MSG_RESULT(no)
+                 AC_DEFINE([NO_MKTEMP], [1],
+                           [The mktemp() function is not available.])])])
+fi
+AC_SUBST([MEMORYMGR])
+
+# Extract the library version IDs from jpeglib.h.
+AC_MSG_CHECKING([libjpeg version number])
+[major=`sed -ne 's/^#define JPEG_LIB_VERSION_MAJOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`
+minor=`sed -ne 's/^#define JPEG_LIB_VERSION_MINOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`]
+AC_SUBST([JPEG_LIB_VERSION],
+         [`expr $major + $minor`:0:$minor])
+AC_MSG_RESULT([$JPEG_LIB_VERSION])
+
+AC_CONFIG_FILES([Makefile libjpeg.pc])
+AC_OUTPUT

depcomp

@@ -0,0 +1,791 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2016-01-11.22; # UTC
+
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputting dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$depmode" = msvc7msys; then
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am.  Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+  for arg
+  do
+    case $arg in
+    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+    *)  set fnord "$@" "$arg" ;;
+    esac
+    shift # fnord
+    shift # $arg
+  done
+  "$@"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the "deleted header file" problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+## Some versions of gcc put a space before the ':'.  On the theory
+## that the space means something, we add a space to the output as
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like '#:fec' to the end of the
+    # dependency line.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
+    echo >> "$depfile"
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  set_dir_from "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$base.u
+    tmpdepfile3=$dir.libs/$base.u
+    "$@" -Wc,-M
+  else
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$dir$base.u
+    tmpdepfile3=$dir$base.u
+    "$@" -M
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp2)
+  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+  # compilers, which have integrated preprocessors.  The correct option
+  # to use with these is +Maked; it writes dependencies to a file named
+  # 'foo.d', which lands next to the object file, wherever that
+  # happens to be.
+  # Much of this is similar to the tru64 case; see comments there.
+  set_dir_from  "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir.libs/$base.d
+    "$@" -Wc,+Maked
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    "$@" +Maked
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+     rm -f "$tmpdepfile1" "$tmpdepfile2"
+     exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  if test -f "$tmpdepfile"; then
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
+    sed -ne '2,${
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile" "$tmpdepfile2"
+  ;;
+
+tru64)
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
+
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The first sed program below extracts the file names and escapes
+  # backslashes for cygpath.  The second sed program outputs the file
+  # name when reading, but also accumulates all include files in the
+  # hold buffer in order to output them again at the end.  This only
+  # works with sed implementations that can handle large buffers.
+  sed < "$tmpdepfile" -n '
+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/'"$tab"'\1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+  s/.*/'"$tab"'/
+  G
+  p
+}' >> "$depfile"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
+  rm -f "$tmpdepfile"
+  ;;
+
+msvc7msys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+#nosideeffect)
+  # This comment above is used by automake to tell side-effect
+  # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  test -z "$dashmflag" && dashmflag=-M
+  # Require at least two characters before searching for ':'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
+  "$@" $dashmflag |
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+dashXmstdout)
+  # This case only exists to satisfy depend.m4.  It is never actually
+  # run, as this mode is specially recognized in the preamble.
+  exit 1
+  ;;
+
+makedepend)
+  "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+  # X makedepend
+  shift
+  cleared=no eat=no
+  for arg
+  do
+    case $cleared in
+    no)
+      set ""; shift
+      cleared=yes ;;
+    esac
+    if test $eat = yes; then
+      eat=no
+      continue
+    fi
+    case "$arg" in
+    -D*|-I*)
+      set fnord "$@" "$arg"; shift ;;
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -arch)
+      eat=yes ;;
+    -*|$object)
+      ;;
+    *)
+      set fnord "$@" "$arg"; shift ;;
+    esac
+  done
+  obj_suffix=`echo "$object" | sed 's/^.*\././'`
+  touch "$tmpdepfile"
+  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+  rm -f "$depfile"
+  # makedepend may prepend the VPATH from the source file name to the object.
+  # No need to regex-escape $object, excess matching of '.' is harmless.
+  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile" "$tmpdepfile".bak
+  ;;
+
+cpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  cat < "$tmpdepfile" >> "$depfile"
+  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  IFS=" "
+  for arg
+  do
+    case "$arg" in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+        set fnord "$@"
+        shift
+        shift
+        ;;
+    *)
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;
+    esac
+  done
+  "$@" -E 2>/dev/null |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvcmsys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+none)
+  exec "$@"
+  ;;
+
+*)
+  echo "Unknown depmode $depmode" 1>&2
+  exit 1
+  ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

djpeg.1

@@ -1,4 +1,4 @@
-.TH DJPEG 1 "13 November 2017"
+.TH DJPEG 1 "26 July 2015"
 .SH NAME
 djpeg \- decompress a JPEG file to an image file
 .SH SYNOPSIS
@@ -55,19 +55,23 @@ default options are chosen for highest quality output.)  Currently, this is
 equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
 .TP
 .B \-grayscale
-Force grayscale output even if JPEG file is color.  Useful for viewing on
+Force grayscale output even if JPEG file is color.
-monochrome displays; also,
+Useful for viewing on monochrome displays; also,
 .B djpeg
 runs noticeably faster in this mode.
 .TP
 .B \-rgb
 Force RGB output even if JPEG file is grayscale.
+This is provided to support applications that don't
+want to cope with grayscale as a separate case.
 .TP
 .BI \-scale " M/N"
-Scale the output image by a factor M/N.  Currently the scale factor must be
+Scale the output image by a factor M/N.  Currently supported scale factors are
-M/8, where M is an integer between 1 and 16 inclusive, or any reduced fraction
+M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for
-thereof (such as 1/2, 3/4, etc.)  Scaling is handy if the image is larger than
+baseline JPEG.  If the /N part is omitted, then M specifies the DCT scaled
-your screen; also,
+size to be applied on the given input.  For baseline JPEG this is equivalent
+to M/8 scaling, since the source DCT size for baseline JPEG is 8.
+Scaling is handy if the image is larger than your screen; also,
 .B djpeg
 runs much faster when scaling down the output.
 .TP
@@ -118,28 +122,14 @@ Use integer DCT method (default).
 .TP
 .B \-dct fast
 Use fast integer DCT (less accurate).
-In libjpeg-turbo, the fast method is generally about 5-15% faster than the int
-method when using the x86/x86-64 SIMD extensions (results may vary with other
-SIMD implementations, or when using libjpeg-turbo without SIMD extensions.)  If
-the JPEG image was compressed using a quality level of 85 or below, then there
-should be little or no perceptible difference between the two algorithms.  When
-decompressing images that were compressed using quality levels above 85,
-however, the difference between the fast and int methods becomes more
-pronounced.  With images compressed using quality=97, for instance, the fast
-method incurs generally about a 4-6 dB loss (in PSNR) relative to the int
-method, but this can be larger for some images.  If you can avoid it, do not
-use the fast method when decompressing images that were compressed using
-quality levels above 97.  The algorithm often degenerates for such images and
-can actually produce a more lossy output image than if the JPEG image had been
-compressed using lower quality levels.
 .TP
 .B \-dct float
 Use floating-point DCT method.
-The float method is mainly a legacy feature.  It does not produce significantly
+The float method is very slightly more accurate than the int method, but is
-more accurate results than the int method, and it is much slower.  The float
+much slower unless your machine has very fast floating-point hardware.  Also
-method may also give different results on different machines due to varying
+note that results of the floating-point method may vary slightly across
-roundoff behavior, whereas the integer methods should give the same results on
+machines, while the integer methods should give the same results everywhere.
-all machines.
+The fast integer method is much less accurate than the other two.
 .TP
 .B \-dither fs
 Use Floyd-Steinberg dithering in color quantization.
@@ -157,9 +147,6 @@ Ordered dither is only available in
 .B \-onepass
 mode.
 .TP
-.BI \-icc " file"
-Extract ICC color management profile to the specified file.
-.TP
 .BI \-map " file"
 Quantize to the colors used in the specified image file.  This is useful for
 producing multiple files with identical color maps, or for forcing a
@@ -171,7 +158,7 @@ and
 .BR \-onepass .
 .TP
 .B \-nosmooth
-Use a faster, lower-quality upsampling routine.
+Don't use high-quality upsampling.
 .TP
 .B \-onepass
 Use one-pass instead of two-pass color quantization.  The one-pass method is
@@ -188,28 +175,11 @@ Set limit for amount of memory to use in processing large images.  Value is
 in thousands of bytes, or millions of bytes if "M" is attached to the
 number.  For example,
 .B \-max 4m
-selects 4000000 bytes.  If more space is needed, an error will occur.
+selects 4000000 bytes.  If more space is needed, temporary files will be used.
 .TP
 .BI \-outfile " name"
 Send output image to the named file, not to standard output.
 .TP
-.BI \-memsrc
-Load input file into memory before decompressing.  This feature was implemented
-mainly as a way of testing the in-memory source manager (jpeg_mem_src().)
-.TP
-.BI \-skip " Y0,Y1"
-Decompress all rows of the JPEG image except those between Y0 and Y1
-(inclusive.)  Note that if decompression scaling is being used, then Y0 and Y1
-are relative to the scaled image dimensions.
-.TP
-.BI \-crop " WxH+X+Y"
-Decompress only a rectangular subregion of the image, starting at point X,Y
-with width W and height H.  If necessary, X will be shifted left to the nearest
-iMCU boundary, and the width will be increased accordingly.  Note that if
-decompression scaling is being used, then X, Y, W, and H are relative to the
-scaled image dimensions.  Currently this option only works with the
-PBMPLUS (PPM/PGM), GIF, and Targa output formats.
-.TP
 .B \-verbose
 Enable debug printout.  More
 .BR \-v 's
@@ -218,9 +188,6 @@ give more output.  Also, version information is printed at startup.
 .B \-debug
 Same as
 .BR \-verbose .
-.TP
-.B \-version
-Print version information and exit.
 .SH EXAMPLES
 .LP
 This example decompresses the JPEG file foo.jpg, quantizes it to
@@ -283,14 +250,8 @@ Wallace, Gregory K.  "The JPEG Still Picture Compression Standard",
 Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
 .SH AUTHOR
 Independent JPEG Group
-.PP
+.SH BUGS
-This file was modified by The libjpeg-turbo Project to include only information
+To avoid the Unisys LZW patent (now expired),
-relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
+.B djpeg
-features not present in libjpeg.
+produces uncompressed GIF files.  These are larger than they should be, but
-.SH ISSUES
+are readable by standard GIF decoders.
-Support for compressed GIF output files was removed in djpeg v6b due to
-concerns over the Unisys LZW patent.  Although this patent expired in 2006,
-djpeg still lacks compressed GIF support, for these historical reasons.
-(Conversion of JPEG files to GIF is usually a bad idea anyway, since GIF is a
-256-color format.)  The uncompressed GIF files that djpeg generates are larger
-than they should be, but they are readable by standard GIF decoders.

djpeg.c

@@ -1,22 +1,18 @@
 /*
  * djpeg.c
  *
- * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * Modified 2013 by Guido Vollbeding.
+ * Modified 2009-2015 by Guido Vollbeding.
- * libjpeg-turbo Modifications:
+ * This file is part of the Independent JPEG Group's software.
- * Copyright (C) 2010-2011, 2013-2017, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README file.
- * Copyright (C) 2015, Google, Inc.
- * For conditions of distribution and use, see the accompanying README.ijg
- * file.
  *
  * This file contains a command-line user interface for the JPEG decompressor.
  * It should work on any system with Unix- or MS-DOS-style command lines.
  *
  * Two different command line styles are permitted, depending on the
  * compile-time switch TWO_FILE_COMMANDLINE:
- *      djpeg [options]  inputfile outputfile
+ *	djpeg [options]  inputfile outputfile
- *      djpeg [options]  [inputfile]
+ *	djpeg [options]  [inputfile]
  * In the second style, output is always to standard output, which you'd
  * normally redirect to a file or pipe to some other program.  Input is
  * either from a named file or from standard input (typically redirected).
@@ -24,34 +20,29 @@
  * don't support pipes.  Also, you MUST use the first style if your system
  * doesn't do binary I/O to stdin/stdout.
  * To simplify script writing, the "-outfile" switch is provided.  The syntax
- *      djpeg [options]  -outfile outputfile  inputfile
+ *	djpeg [options]  -outfile outputfile  inputfile
  * works regardless of which command line style is used.
  */
 
-#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
+#include "cdjpeg.h"		/* Common decls for cjpeg/djpeg applications */
-#include "jversion.h"           /* for version message */
+#include "jversion.h"		/* for version message */
-#include "jconfigint.h"
 
-#ifndef HAVE_STDLIB_H           /* <stdlib.h> should declare free() */
+#include <ctype.h>		/* to declare isprint() */
-extern void free(void *ptr);
-#endif
 
-#include <ctype.h>              /* to declare isprint() */
+#ifdef USE_CCOMMAND		/* command-line reader for Macintosh */
-
-#ifdef USE_CCOMMAND             /* command-line reader for Macintosh */
 #ifdef __MWERKS__
 #include <SIOUX.h>              /* Metrowerks needs this */
-#include <console.h>            /* ... and this */
+#include <console.h>		/* ... and this */
 #endif
 #ifdef THINK_C
-#include <console.h>            /* Think declares it here */
+#include <console.h>		/* Think declares it here */
 #endif
 #endif
 
 
 /* Create the add-on message string table. */
 
-#define JMESSAGE(code, string)  string,
+#define JMESSAGE(code,string)	string ,
 
 static const char * const cdjpeg_message_table[] = {
 #include "cderror.h"
@@ -67,17 +58,17 @@ static const char * const cdjpeg_message_table[] = {
  */
 
 typedef enum {
-  FMT_BMP,                      /* BMP format (Windows flavor) */
+	FMT_BMP,		/* BMP format (Windows flavor) */
-  FMT_GIF,                      /* GIF format */
+	FMT_GIF,		/* GIF format */
-  FMT_OS2,                      /* BMP format (OS/2 flavor) */
+	FMT_OS2,		/* BMP format (OS/2 flavor) */
-  FMT_PPM,                      /* PPM/PGM (PBMPLUS formats) */
+	FMT_PPM,		/* PPM/PGM (PBMPLUS formats) */
-  FMT_RLE,                      /* RLE format */
+	FMT_RLE,		/* RLE format */
-  FMT_TARGA,                    /* Targa format */
+	FMT_TARGA,		/* Targa format */
-  FMT_TIFF                      /* TIFF format */
+	FMT_TIFF		/* TIFF format */
 } IMAGE_FORMATS;
 
-#ifndef DEFAULT_FMT             /* so can override from CFLAGS in Makefile */
+#ifndef DEFAULT_FMT		/* so can override from CFLAGS in Makefile */
-#define DEFAULT_FMT     FMT_PPM
+#define DEFAULT_FMT	FMT_PPM
 #endif
 
 static IMAGE_FORMATS requested_fmt;
@@ -92,18 +83,12 @@ static IMAGE_FORMATS requested_fmt;
  */
 
 
-static const char *progname;    /* program name for error messages */
+static const char * progname;	/* program name for error messages */
-static char *icc_filename;      /* for -icc switch */
+static char * outfilename;	/* for -outfile switch */
-static char *outfilename;       /* for -outfile switch */
-boolean memsrc;                 /* for -memsrc switch */
-boolean skip, crop;
-JDIMENSION skip_start, skip_end;
-JDIMENSION crop_x, crop_y, crop_width, crop_height;
-#define INPUT_BUF_SIZE  4096
 
 
 LOCAL(void)
-usage(void)
+usage (void)
 /* complain about bad command line */
 {
   fprintf(stderr, "usage: %s [switches] ", progname);
@@ -118,51 +103,49 @@ usage(void)
   fprintf(stderr, "  -fast          Fast, low-quality processing\n");
   fprintf(stderr, "  -grayscale     Force grayscale output\n");
   fprintf(stderr, "  -rgb           Force RGB output\n");
-  fprintf(stderr, "  -rgb565        Force RGB565 output\n");
 #ifdef IDCT_SCALING_SUPPORTED
   fprintf(stderr, "  -scale M/N     Scale output image by fraction M/N, eg, 1/8\n");
 #endif
 #ifdef BMP_SUPPORTED
   fprintf(stderr, "  -bmp           Select BMP output format (Windows style)%s\n",
-          (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
+	  (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
 #endif
 #ifdef GIF_SUPPORTED
   fprintf(stderr, "  -gif           Select GIF output format%s\n",
-          (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
+	  (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
 #endif
 #ifdef BMP_SUPPORTED
   fprintf(stderr, "  -os2           Select BMP output format (OS/2 style)%s\n",
-          (DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
+	  (DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
 #endif
 #ifdef PPM_SUPPORTED
   fprintf(stderr, "  -pnm           Select PBMPLUS (PPM/PGM) output format%s\n",
-          (DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
+	  (DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
 #endif
 #ifdef RLE_SUPPORTED
   fprintf(stderr, "  -rle           Select Utah RLE output format%s\n",
-          (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
+	  (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
 #endif
 #ifdef TARGA_SUPPORTED
   fprintf(stderr, "  -targa         Select Targa output format%s\n",
-          (DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
+	  (DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
 #endif
   fprintf(stderr, "Switches for advanced users:\n");
 #ifdef DCT_ISLOW_SUPPORTED
   fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
-          (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
+	  (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
 #endif
 #ifdef DCT_IFAST_SUPPORTED
   fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
-          (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
+	  (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
 #endif
 #ifdef DCT_FLOAT_SUPPORTED
   fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
-          (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
+	  (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
 #endif
   fprintf(stderr, "  -dither fs     Use F-S dithering (default)\n");
   fprintf(stderr, "  -dither none   Don't use dithering in quantization\n");
   fprintf(stderr, "  -dither ordered  Use ordered dither (medium speed, quality)\n");
-  fprintf(stderr, "  -icc FILE      Extract ICC profile to FILE\n");
 #ifdef QUANT_2PASS_SUPPORTED
   fprintf(stderr, "  -map FILE      Map to colors used in named image file\n");
 #endif
@@ -172,22 +155,14 @@ usage(void)
 #endif
   fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
   fprintf(stderr, "  -outfile name  Specify name for output file\n");
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-  fprintf(stderr, "  -memsrc        Load input file into memory before decompressing\n");
-#endif
-
-  fprintf(stderr, "  -skip Y0,Y1    Decompress all rows except those between Y0 and Y1 (inclusive)\n");
-  fprintf(stderr, "  -crop WxH+X+Y  Decompress only a rectangular subregion of the image\n");
-  fprintf(stderr, "                 [requires PBMPLUS (PPM/PGM), GIF, or Targa output format]\n");
   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
-  fprintf(stderr, "  -version       Print version information and exit\n");
   exit(EXIT_FAILURE);
 }
 
 
 LOCAL(int)
-parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
+parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
-               int last_file_arg_seen, boolean for_real)
+		int last_file_arg_seen, boolean for_real)
 /* Parse optional switches.
  * Returns argv[] index of first file-name argument (== argc if none).
  * Any file names with indexes <= last_file_arg_seen are ignored;
@@ -198,15 +173,11 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
  */
 {
   int argn;
-  char *arg;
+  char * arg;
 
   /* Set up default JPEG parameters. */
-  requested_fmt = DEFAULT_FMT;  /* set default output file format */
+  requested_fmt = DEFAULT_FMT;	/* set default output file format */
-  icc_filename = NULL;
   outfilename = NULL;
-  memsrc = FALSE;
-  skip = FALSE;
-  crop = FALSE;
   cinfo->err->trace_level = 0;
 
   /* Scan command line options, adjust parameters */
@@ -216,81 +187,73 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
     if (*arg != '-') {
       /* Not a switch, must be a file name argument */
       if (argn <= last_file_arg_seen) {
-        outfilename = NULL;     /* -outfile applies to just one input file */
+	outfilename = NULL;	/* -outfile applies to just one input file */
-        continue;               /* ignore this name if previously processed */
+	continue;		/* ignore this name if previously processed */
       }
-      break;                    /* else done parsing switches */
+      break;			/* else done parsing switches */
     }
-    arg++;                      /* advance past switch marker character */
+    arg++;			/* advance past switch marker character */
 
     if (keymatch(arg, "bmp", 1)) {
       /* BMP output format. */
       requested_fmt = FMT_BMP;
 
     } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
-               keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
+	       keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
       /* Do color quantization. */
       int val;
 
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (sscanf(argv[argn], "%d", &val) != 1)
-        usage();
+	usage();
       cinfo->desired_number_of_colors = val;
       cinfo->quantize_colors = TRUE;
 
     } else if (keymatch(arg, "dct", 2)) {
       /* Select IDCT algorithm. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (keymatch(argv[argn], "int", 1)) {
-        cinfo->dct_method = JDCT_ISLOW;
+	cinfo->dct_method = JDCT_ISLOW;
       } else if (keymatch(argv[argn], "fast", 2)) {
-        cinfo->dct_method = JDCT_IFAST;
+	cinfo->dct_method = JDCT_IFAST;
       } else if (keymatch(argv[argn], "float", 2)) {
-        cinfo->dct_method = JDCT_FLOAT;
+	cinfo->dct_method = JDCT_FLOAT;
       } else
-        usage();
+	usage();
 
     } else if (keymatch(arg, "dither", 2)) {
       /* Select dithering algorithm. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (keymatch(argv[argn], "fs", 2)) {
-        cinfo->dither_mode = JDITHER_FS;
+	cinfo->dither_mode = JDITHER_FS;
       } else if (keymatch(argv[argn], "none", 2)) {
-        cinfo->dither_mode = JDITHER_NONE;
+	cinfo->dither_mode = JDITHER_NONE;
       } else if (keymatch(argv[argn], "ordered", 2)) {
-        cinfo->dither_mode = JDITHER_ORDERED;
+	cinfo->dither_mode = JDITHER_ORDERED;
       } else
-        usage();
+	usage();
 
     } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
       /* Enable debug printouts. */
       /* On first -d, print version identification */
       static boolean printed_version = FALSE;
 
-      if (!printed_version) {
+      if (! printed_version) {
-        fprintf(stderr, "%s version %s (build %s)\n",
+	fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
-                PACKAGE_NAME, VERSION, BUILD);
+		JVERSION, JCOPYRIGHT);
-        fprintf(stderr, "%s\n\n", JCOPYRIGHT);
+	printed_version = TRUE;
-        fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
-                JVERSION);
-        printed_version = TRUE;
       }
       cinfo->err->trace_level++;
 
-    } else if (keymatch(arg, "version", 4)) {
-      fprintf(stderr, "%s version %s (build %s)\n",
-              PACKAGE_NAME, VERSION, BUILD);
-      exit(EXIT_SUCCESS);
-
     } else if (keymatch(arg, "fast", 1)) {
       /* Select recommended processing options for quick-and-dirty output. */
       cinfo->two_pass_quantize = FALSE;
       cinfo->dither_mode = JDITHER_ORDERED;
-      if (!cinfo->quantize_colors) /* don't override an earlier -colors */
+      if (! cinfo->quantize_colors) /* don't override an earlier -colors */
-        cinfo->desired_number_of_colors = 216;
+	cinfo->desired_number_of_colors = 216;
       cinfo->dct_method = JDCT_FASTEST;
       cinfo->do_fancy_upsampling = FALSE;
 
@@ -298,43 +261,31 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
       /* GIF output format. */
       requested_fmt = FMT_GIF;
 
-    } else if (keymatch(arg, "grayscale", 2) ||
+    } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
-               keymatch(arg, "greyscale", 2)) {
       /* Force monochrome output. */
       cinfo->out_color_space = JCS_GRAYSCALE;
 
-    } else if (keymatch(arg, "rgb", 2)) {
+    } else if (keymatch(arg, "rgb", 3)) {
       /* Force RGB output. */
       cinfo->out_color_space = JCS_RGB;
 
-    } else if (keymatch(arg, "rgb565", 2)) {
-      /* Force RGB565 output. */
-      cinfo->out_color_space = JCS_RGB565;
-
-    } else if (keymatch(arg, "icc", 1)) {
-      /* Set ICC filename. */
-      if (++argn >= argc)       /* advance to next argument */
-        usage();
-      icc_filename = argv[argn];
-      jpeg_save_markers(cinfo, JPEG_APP0 + 2, 0xFFFF);
-
     } else if (keymatch(arg, "map", 3)) {
       /* Quantize to a color map taken from an input file. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
-      if (for_real) {           /* too expensive to do twice! */
+      if (for_real) {		/* too expensive to do twice! */
-#ifdef QUANT_2PASS_SUPPORTED    /* otherwise can't quantize to supplied map */
+#ifdef QUANT_2PASS_SUPPORTED	/* otherwise can't quantize to supplied map */
-        FILE *mapfile;
+	FILE * mapfile;
 
-        if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
+	if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
-          fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
+	  fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
-          exit(EXIT_FAILURE);
+	  exit(EXIT_FAILURE);
-        }
+	}
-        read_color_map(cinfo, mapfile);
+	read_color_map(cinfo, mapfile);
-        fclose(mapfile);
+	fclose(mapfile);
-        cinfo->quantize_colors = TRUE;
+	cinfo->quantize_colors = TRUE;
 #else
-        ERREXIT(cinfo, JERR_NOT_COMPILED);
+	ERREXIT(cinfo, JERR_NOT_COMPILED);
 #endif
       }
 
@@ -343,16 +294,16 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
       long lval;
       char ch = 'x';
 
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
-        usage();
+	usage();
       if (ch == 'm' || ch == 'M')
-        lval *= 1000L;
+	lval *= 1000L;
       cinfo->mem->max_memory_to_use = lval * 1000L;
 
     } else if (keymatch(arg, "nosmooth", 3)) {
-      /* Suppress fancy upsampling */
+      /* Suppress fancy upsampling. */
       cinfo->do_fancy_upsampling = FALSE;
 
     } else if (keymatch(arg, "onepass", 3)) {
@@ -365,19 +316,9 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
 
     } else if (keymatch(arg, "outfile", 4)) {
       /* Set output file name. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
-      outfilename = argv[argn]; /* save it away for later use */
+      outfilename = argv[argn];	/* save it away for later use */
-
-    } else if (keymatch(arg, "memsrc", 2)) {
-      /* Use in-memory source manager */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-      memsrc = TRUE;
-#else
-      fprintf(stderr, "%s: sorry, in-memory source manager was not compiled in\n",
-              progname);
-      exit(EXIT_FAILURE);
-#endif
 
     } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
       /* PPM/PGM output format. */
@@ -387,42 +328,24 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
       /* RLE output format. */
       requested_fmt = FMT_RLE;
 
-    } else if (keymatch(arg, "scale", 2)) {
+    } else if (keymatch(arg, "scale", 1)) {
       /* Scale the output image by a fraction M/N. */
-      if (++argn >= argc)       /* advance to next argument */
+      if (++argn >= argc)	/* advance to next argument */
-        usage();
+	usage();
       if (sscanf(argv[argn], "%u/%u",
-                 &cinfo->scale_num, &cinfo->scale_denom) != 2)
+		 &cinfo->scale_num, &cinfo->scale_denom) < 1)
-        usage();
+	usage();
-
-    } else if (keymatch(arg, "skip", 2)) {
-      if (++argn >= argc)
-        usage();
-      if (sscanf(argv[argn], "%u,%u", &skip_start, &skip_end) != 2 ||
-          skip_start > skip_end)
-        usage();
-      skip = TRUE;
-
-    } else if (keymatch(arg, "crop", 2)) {
-      char c;
-      if (++argn >= argc)
-        usage();
-      if (sscanf(argv[argn], "%u%c%u+%u+%u", &crop_width, &c, &crop_height,
-                 &crop_x, &crop_y) != 5 ||
-          (c != 'X' && c != 'x') || crop_width < 1 || crop_height < 1)
-        usage();
-      crop = TRUE;
 
     } else if (keymatch(arg, "targa", 1)) {
       /* Targa output format. */
       requested_fmt = FMT_TARGA;
 
     } else {
-      usage();                  /* bogus switch */
+      usage();			/* bogus switch */
     }
   }
 
-  return argn;                  /* return index of next arg (file name) */
+  return argn;			/* return index of next arg (file name) */
 }
 
 
@@ -434,13 +357,13 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
  */
 
 LOCAL(unsigned int)
-jpeg_getc(j_decompress_ptr cinfo)
+jpeg_getc (j_decompress_ptr cinfo)
 /* Read next byte */
 {
-  struct jpeg_source_mgr *datasrc = cinfo->src;
+  struct jpeg_source_mgr * datasrc = cinfo->src;
 
   if (datasrc->bytes_in_buffer == 0) {
-    if (!(*datasrc->fill_input_buffer) (cinfo))
+    if (! (*datasrc->fill_input_buffer) (cinfo))
       ERREXIT(cinfo, JERR_CANT_SUSPEND);
   }
   datasrc->bytes_in_buffer--;
@@ -449,23 +372,23 @@ jpeg_getc(j_decompress_ptr cinfo)
 
 
 METHODDEF(boolean)
-print_text_marker(j_decompress_ptr cinfo)
+print_text_marker (j_decompress_ptr cinfo)
 {
   boolean traceit = (cinfo->err->trace_level >= 1);
-  long length;
+  INT32 length;
   unsigned int ch;
   unsigned int lastch = 0;
 
   length = jpeg_getc(cinfo) << 8;
   length += jpeg_getc(cinfo);
-  length -= 2;                  /* discount the length word itself */
+  length -= 2;			/* discount the length word itself */
 
   if (traceit) {
     if (cinfo->unread_marker == JPEG_COM)
-      fprintf(stderr, "Comment, length %ld:\n", (long)length);
+      fprintf(stderr, "Comment, length %ld:\n", (long) length);
-    else                        /* assume it is an APPn otherwise */
+    else			/* assume it is an APPn otherwise */
       fprintf(stderr, "APP%d, length %ld:\n",
-              cinfo->unread_marker - JPEG_APP0, (long)length);
+	      cinfo->unread_marker - JPEG_APP0, (long) length);
   }
 
   while (--length >= 0) {
@@ -477,16 +400,16 @@ print_text_marker(j_decompress_ptr cinfo)
        * Newlines in CR, CR/LF, or LF form will be printed as one newline.
        */
       if (ch == '\r') {
-        fprintf(stderr, "\n");
+	fprintf(stderr, "\n");
       } else if (ch == '\n') {
-        if (lastch != '\r')
+	if (lastch != '\r')
-          fprintf(stderr, "\n");
+	  fprintf(stderr, "\n");
       } else if (ch == '\\') {
-        fprintf(stderr, "\\\\");
+	fprintf(stderr, "\\\\");
       } else if (isprint(ch)) {
-        putc(ch, stderr);
+	putc(ch, stderr);
       } else {
-        fprintf(stderr, "\\%03o", ch);
+	fprintf(stderr, "\\%03o", ch);
       }
       lastch = ch;
     }
@@ -504,7 +427,7 @@ print_text_marker(j_decompress_ptr cinfo)
  */
 
 int
-main(int argc, char **argv)
+main (int argc, char **argv)
 {
   struct jpeg_decompress_struct cinfo;
   struct jpeg_error_mgr jerr;
@@ -513,10 +436,8 @@ main(int argc, char **argv)
 #endif
   int file_index;
   djpeg_dest_ptr dest_mgr = NULL;
-  FILE *input_file;
+  FILE * input_file;
-  FILE *output_file;
+  FILE * output_file;
-  unsigned char *inbuffer = NULL;
-  unsigned long insize = 0;
   JDIMENSION num_scanlines;
 
   /* On Mac, fetch a command line. */
@@ -526,7 +447,7 @@ main(int argc, char **argv)
 
   progname = argv[0];
   if (progname == NULL || progname[0] == 0)
-    progname = "djpeg";         /* in case C library doesn't provide it */
+    progname = "djpeg";		/* in case C library doesn't provide it */
 
   /* Initialize the JPEG decompression object with default error handling. */
   cinfo.err = jpeg_std_error(&jerr);
@@ -540,10 +461,15 @@ main(int argc, char **argv)
    * APP12 is used by some digital camera makers for textual info,
    * so we provide the ability to display it as text.
    * If you like, additional APPn marker types can be selected for display,
-   * but don't try to override APP0 or APP14 this way (see libjpeg.txt).
+   * but don't try to override APP0 or APP14 this way (see libjpeg.doc).
    */
   jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
-  jpeg_set_marker_processor(&cinfo, JPEG_APP0 + 12, print_text_marker);
+  jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
+
+  /* Now safe to enable signal catcher. */
+#ifdef NEED_SIGNAL_CATCHER
+  enable_signal_catcher((j_common_ptr) &cinfo);
+#endif
 
   /* Scan command line to find file names. */
   /* It is convenient to use just one switch-parsing routine, but the switch
@@ -558,22 +484,22 @@ main(int argc, char **argv)
 #ifdef TWO_FILE_COMMANDLINE
   /* Must have either -outfile switch or explicit output file name */
   if (outfilename == NULL) {
-    if (file_index != argc - 2) {
+    if (file_index != argc-2) {
       fprintf(stderr, "%s: must name one input and one output file\n",
-              progname);
+	      progname);
       usage();
     }
-    outfilename = argv[file_index + 1];
+    outfilename = argv[file_index+1];
   } else {
-    if (file_index != argc - 1) {
+    if (file_index != argc-1) {
       fprintf(stderr, "%s: must name one input and one output file\n",
-              progname);
+	      progname);
       usage();
     }
   }
 #else
   /* Unix style: expect zero or one file name */
-  if (file_index < argc - 1) {
+  if (file_index < argc-1) {
     fprintf(stderr, "%s: only one input file\n", progname);
     usage();
   }
@@ -602,37 +528,14 @@ main(int argc, char **argv)
   }
 
 #ifdef PROGRESS_REPORT
-  start_progress_monitor((j_common_ptr)&cinfo, &progress);
+  start_progress_monitor((j_common_ptr) &cinfo, &progress);
 #endif
 
   /* Specify data source for decompression */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
+  jpeg_stdio_src(&cinfo, input_file);
-  if (memsrc) {
-    size_t nbytes;
-    do {
-      inbuffer = (unsigned char *)realloc(inbuffer, insize + INPUT_BUF_SIZE);
-      if (inbuffer == NULL) {
-        fprintf(stderr, "%s: memory allocation failure\n", progname);
-        exit(EXIT_FAILURE);
-      }
-      nbytes = JFREAD(input_file, &inbuffer[insize], INPUT_BUF_SIZE);
-      if (nbytes < INPUT_BUF_SIZE && ferror(input_file)) {
-        if (file_index < argc)
-          fprintf(stderr, "%s: can't read from %s\n", progname,
-                  argv[file_index]);
-        else
-          fprintf(stderr, "%s: can't read from stdin\n", progname);
-      }
-      insize += (unsigned long)nbytes;
-    } while (nbytes == INPUT_BUF_SIZE);
-    fprintf(stderr, "Compressed size:  %lu bytes\n", insize);
-    jpeg_mem_src(&cinfo, inbuffer, insize);
-  } else
-#endif
-    jpeg_stdio_src(&cinfo, input_file);
 
   /* Read file header, set default decompression parameters */
-  (void)jpeg_read_header(&cinfo, TRUE);
+  (void) jpeg_read_header(&cinfo, TRUE);
 
   /* Adjust default decompression parameters by re-parsing the options */
   file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
@@ -643,10 +546,10 @@ main(int argc, char **argv)
   switch (requested_fmt) {
 #ifdef BMP_SUPPORTED
   case FMT_BMP:
-    dest_mgr = jinit_write_bmp(&cinfo, FALSE, TRUE);
+    dest_mgr = jinit_write_bmp(&cinfo, FALSE);
     break;
   case FMT_OS2:
-    dest_mgr = jinit_write_bmp(&cinfo, TRUE, TRUE);
+    dest_mgr = jinit_write_bmp(&cinfo, TRUE);
     break;
 #endif
 #ifdef GIF_SUPPORTED
@@ -676,91 +579,16 @@ main(int argc, char **argv)
   dest_mgr->output_file = output_file;
 
   /* Start decompressor */
-  (void)jpeg_start_decompress(&cinfo);
+  (void) jpeg_start_decompress(&cinfo);
 
-  /* Skip rows */
+  /* Write output file header */
-  if (skip) {
+  (*dest_mgr->start_output) (&cinfo, dest_mgr);
-    JDIMENSION tmp;
 
-    /* Check for valid skip_end.  We cannot check this value until after
+  /* Process data */
-     * jpeg_start_decompress() is called.  Note that we have already verified
+  while (cinfo.output_scanline < cinfo.output_height) {
-     * that skip_start <= skip_end.
+    num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-     */
+					dest_mgr->buffer_height);
-    if (skip_end > cinfo.output_height - 1) {
+    (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
-      fprintf(stderr, "%s: skip region exceeds image height %d\n", progname,
-              cinfo.output_height);
-      exit(EXIT_FAILURE);
-    }
-
-    /* Write output file header.  This is a hack to ensure that the destination
-     * manager creates an output image of the proper size.
-     */
-    tmp = cinfo.output_height;
-    cinfo.output_height -= (skip_end - skip_start + 1);
-    (*dest_mgr->start_output) (&cinfo, dest_mgr);
-    cinfo.output_height = tmp;
-
-    /* Process data */
-    while (cinfo.output_scanline < skip_start) {
-      num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-                                          dest_mgr->buffer_height);
-      (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
-    }
-    jpeg_skip_scanlines(&cinfo, skip_end - skip_start + 1);
-    while (cinfo.output_scanline < cinfo.output_height) {
-      num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-                                          dest_mgr->buffer_height);
-      (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
-    }
-
-  /* Decompress a subregion */
-  } else if (crop) {
-    JDIMENSION tmp;
-
-    /* Check for valid crop dimensions.  We cannot check these values until
-     * after jpeg_start_decompress() is called.
-     */
-    if (crop_x + crop_width > cinfo.output_width ||
-        crop_y + crop_height > cinfo.output_height) {
-      fprintf(stderr, "%s: crop dimensions exceed image dimensions %d x %d\n",
-              progname, cinfo.output_width, cinfo.output_height);
-      exit(EXIT_FAILURE);
-    }
-
-    jpeg_crop_scanline(&cinfo, &crop_x, &crop_width);
-    if (dest_mgr->calc_buffer_dimensions)
-      (*dest_mgr->calc_buffer_dimensions) (&cinfo, dest_mgr);
-    else
-      ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
-
-    /* Write output file header.  This is a hack to ensure that the destination
-     * manager creates an output image of the proper size.
-     */
-    tmp = cinfo.output_height;
-    cinfo.output_height = crop_height;
-    (*dest_mgr->start_output) (&cinfo, dest_mgr);
-    cinfo.output_height = tmp;
-
-    /* Process data */
-    jpeg_skip_scanlines(&cinfo, crop_y);
-    while (cinfo.output_scanline < crop_y + crop_height) {
-      num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-                                          dest_mgr->buffer_height);
-      (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
-    }
-    jpeg_skip_scanlines(&cinfo, cinfo.output_height - crop_y - crop_height);
-
-  /* Normal full-image decompress */
-  } else {
-    /* Write output file header */
-    (*dest_mgr->start_output) (&cinfo, dest_mgr);
-
-    /* Process data */
-    while (cinfo.output_scanline < cinfo.output_height) {
-      num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-                                          dest_mgr->buffer_height);
-      (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
-    }
   }
 
 #ifdef PROGRESS_REPORT
@@ -770,35 +598,12 @@ main(int argc, char **argv)
   progress.pub.completed_passes = progress.pub.total_passes;
 #endif
 
-  if (icc_filename != NULL) {
-    FILE *icc_file;
-    JOCTET *icc_profile;
-    unsigned int icc_len;
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-    if ((icc_file = fopen(icc_filename, WRITE_BINARY)) == NULL) {
-      fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
-      exit(EXIT_FAILURE);
-    }
-    if (jpeg_read_icc_profile(&cinfo, &icc_profile, &icc_len)) {
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   /* Close files, if we opened them */
@@ -808,13 +613,10 @@ main(int argc, char **argv)
     fclose(output_file);
 
 #ifdef PROGRESS_REPORT
-  end_progress_monitor((j_common_ptr)&cinfo);
+  end_progress_monitor((j_common_ptr) &cinfo);
 #endif
 
-  if (memsrc && inbuffer != NULL)
-    free(inbuffer);
-
   /* All done. */
   exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
-  return 0;                     /* suppress no-return-value warnings */
+  return 0;			/* suppress no-return-value warnings */
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