Fix PNG detection in CMake

Edited the vcpkg instructions for windows so they just work if you copy and paste

.gitattributes

@@ -0,0 +1,5 @@
+/appveyor.yml export-ignore
+/.gitattributes export-ignore
+/.github export-ignore
+*.ppm binary
+/ChangeLog.md conflict-marker-size=8

.gitauthors

@@ -1,7 +0,0 @@
-
-dcommander = DRC <dcommander@users.sourceforge.net>
-astrand = Peter Åstrand <astrand@cendio.se>
-ossman_ = Pierre Ossman <ossman@cendio.se>
-const_k = Constantin Kaplinsky <const@tightvnc.com>
-atkac = Adam Tkac <atkac@redhat.com>
-

.github/pull_request_template.md

@@ -0,0 +1,8 @@
+**Complete description of the bug fix or feature that this pull request implements**
+
+
+**Checklist before submitting the pull request, to maximize the chances that the pull request will be accepted**
+
+- [ ] Read CONTRIBUTING.md, a link to which appears under "Helpful resources" below.  That document discusses general guidelines for contributing to libjpeg-turbo, as well as the types of contributions that will not be accepted or are unlikely to be accepted.
+- [ ] Search the existing issues and pull requests (both open and closed) to ensure that a similar request has not already been submitted and rejected.
+- [ ] Discuss the proposed bug fix or feature in a GitHub issue, through direct e-mail with the project maintainer, or on the libjpeg-turbo-devel mailing list.

.gitignore

@@ -1,3 +1,4 @@
+.DS_Store
 Makefile.in
 Makefile
 /CMakeFiles
@@ -42,3 +43,6 @@ Makefile
 /tjunittest
 /wrjpgcom
 /yuvjpeg
+test_yuv*.jpg
+CMakeCache.txt
+CTestTestfile.cmake

BUILDING.md

@@ -0,0 +1,726 @@
+Building libjpeg-turbo
+======================
+
+
+Build Requirements
+------------------
+
+
+### All Systems
+
+- [CMake](https://cmake.org) v2.8.12 or later
+
+- [NASM](https://nasm.us) or [Yasm](https://yasm.tortall.net)
+  (if building x86 or x86-64 SIMD extensions)
+  * If using NASM, 2.13 or later is required.
+  * If using Yasm, 1.2.0 or later is required.
+  * NASM 2.15 or later is required if building libjpeg-turbo with Intel
+    Control-flow Enforcement Technology (CET) support.
+  * If building on macOS, NASM or Yasm can be obtained from
+    [MacPorts](https://macports.org) or [Homebrew](https://brew.sh).
+     - 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 NASM 2.14 or later or Yasm must be used when
+       building libjpeg-turbo.
+  * If NASM or Yasm is not in your `PATH`, then you can specify the full path
+    to the assembler by using either the `CMAKE_ASM_NASM_COMPILER` CMake
+    variable or the `ASM_NASM` environment variable.  On Windows, use forward
+    slashes rather than backslashes in the path (for example,
+    **c:/nasm/nasm.exe**).
+  * NASM and Yasm are located in the CRB (Code Ready Builder) or PowerTools
+    repository on Red Hat Enterprise Linux 8+ and derivatives, which is not
+    enabled by default.
+
+### 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.  For other systems, you can obtain the Oracle Java
+  Development Kit from
+  <https://oracle.com/java/technologies/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
+  [Visual Studio Community Edition](https://visualstudio.microsoft.com),
+  which includes everything necessary to build libjpeg-turbo.
+
+  * You can also download and install the standalone Windows SDK (for Windows 7
+    or later), which includes command-line versions of the 32-bit and 64-bit
+    Visual C++ compilers.
+  * 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`, which are located in the same
+    directory as the compiler.
+  * If built with Visual C++ 2015 or later, the libjpeg-turbo static libraries
+    cannot be used with earlier versions of Visual C++, and vice versa.
+  * The libjpeg API DLL (**jpeg{version}.dll**) will depend on the C run-time
+    DLLs corresponding to the version of Visual C++ that was used to build it.
+    
+- Vcpkg
+  
+  You need to download and install libpng using the [vcpkg](https://github.com/Microsoft/vcpkg) dependency manager:
+
+      git clone https://github.com/Microsoft/vcpkg.git
+      cd vcpkg
+      ./bootstrap-vcpkg.bat
+      ./vcpkg integrate install
+      ./vcpkg install libpng:x64-windows
+      ./vcpkg install libpng:x64-windows-static
+      
+  Actually, you can just download and install MozJPEG using vcpkg dependency manager:
+      
+      ./vcpkg install mozjpeg
+  
+  The mozjpeg port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
+
+
+   ... OR ...
+
+
+- MinGW
+
+  [MSYS2](https://msys2.org) or [tdm-gcc](https://jmeubank.github.io/tdm-gcc)
+  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
+  <https://oracle.com/java/technologies/downloads>.
+
+  * If using JDK 11 or later, CMake 3.10.x or later must also be used.
+
+
+Sub-Project Builds
+------------------
+
+The libjpeg-turbo build system does not support being included as a sub-project
+using the CMake `add_subdirectory()` function.  Use the CMake
+`ExternalProject_Add()` function instead.
+
+
+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.
+
+
+Ninja
+-----
+
+If using Ninja, then replace `make` or `nmake` with `ninja`, and replace the
+CMake generator (specified with the `-G` option) with `Ninja`, in all of the
+procedures and recipes below.
+
+
+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.
+
+
+### 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
+
+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 \
+      -DCMAKE_INSTALL_PREFIX={install_path} \
+      [additional CMake flags] {source_directory}
+    make
+
+*{install\_path}* is the path under which the libjpeg-turbo binaries should be
+installed.
+
+
+### 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 \
+      -DCMAKE_INSTALL_PREFIX={install_path} \
+      [additional CMake flags] {source_directory}
+    make
+
+*{install\_path}* is the path under which the libjpeg-turbo binaries should be
+installed.
+
+
+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.
+
+
+### Armv8 (64-bit)
+
+**Xcode 5 or later required, Xcode 6.3.x or later recommended**
+
+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=($IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk)
+    export CFLAGS="-Wall -miphoneos-version-min=8.0 -funwind-tables"
+
+    cd {build_directory}
+
+    cmake -G"Unix Makefiles" \
+      -DCMAKE_C_COMPILER=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang \
+      -DCMAKE_OSX_ARCHITECTURES=arm64 \
+      -DCMAKE_OSX_SYSROOT=${IOS_SYSROOT[0]} \
+      [additional CMake flags] {source_directory}
+    make
+
+Replace `iPhoneOS` with `iPhoneSimulator` and `-miphoneos-version-min` with
+`-miphonesimulator-version-min` to build libjpeg-turbo for the iOS simulator on
+Macs with Apple silicon CPUs.
+
+
+Building libjpeg-turbo for Android
+----------------------------------
+
+Building libjpeg-turbo for Android platforms requires v13b or later of the
+[Android NDK](https://developer.android.com/ndk).
+
+
+### Armv7 (32-bit)
+
+**NDK r19 or later with Clang recommended**
+
+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)
+
+**Clang recommended**
+
+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**.
+
+
+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/macOS 10.7 and later.
+
+In order to create a Mac package/disk image that contains universal
+x86-64/Arm binaries, set the following CMake variable:
+
+* `SECONDARY_BUILD`: Directory containing a cross-compiled x86-64 or Armv8
+  (64-bit) iOS or macOS build of libjpeg-turbo to include in the universal
+  binaries
+
+You should first use CMake to configure the cross-compiled x86-64 or Armv8
+secondary build of libjpeg-turbo (see "Building libjpeg-turbo for iOS" above,
+if applicable) in a build directory that matches the one specified in the
+aforementioned CMake variable.  Next, configure the primary (native) build of
+libjpeg-turbo as an out-of-tree build, specifying the aforementioned CMake
+variable, and build it.  Once the primary build has been built, run `make dmg`
+from the build directory.  The packaging system will build the secondary build,
+use lipo to combine it with the primary build into a single set of universal
+binaries, then package the universal binaries.
+
+
+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](https://nsis.sourceforge.io).  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.

BUILDING.txt

@@ -1,866 +0,0 @@
-*******************************************************************************
-**     Building on Un*x Platforms (including Cygwin and OS X)
-*******************************************************************************
-
-
-==================
-Build Requirements
-==================
-
--- pkg-config
--- autoconf 2.56 or later
--- automake 1.7 or later
--- libtool 1.4 or later
-   * If using Xcode 4.3 or later on OS X, autoconf and automake are no longer
-     provided.  The easiest way to obtain them is from MacPorts
-     (http://www.macports.org/).
-
--- NASM (if building x86 or x86-64 SIMD extensions)
-   * 0.98, or 2.01 or later is required for a 32-bit build
-   * NASM 2.00 or later is required for a 64-bit build
-   * NASM 2.07 or later is required for a 64-bit build on OS X.  This can be
-     obtained from MacPorts (http://www.macports.org/).
-
-   The binary RPMs released by the NASM project do not work on older Linux
-   systems, such as Red Hat Enterprise Linux 4.  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.
-
--- GCC v4.1 (or later) or clang recommended
-
--- If building the TurboJPEG Java wrapper, JDK or OpenJDK 1.5 or later is
-   required.  Some systems, such as Solaris 10 and later and Red Hat Enterprise
-   Linux 5 and later, have this pre-installed.  On OS X 10.5 and later, it will
-   be necessary to install the Java Developer Package, which can be downloaded
-   from http://developer.apple.com/downloads (Apple ID required.)  For systems
-   that do not have a JDK installed, you can obtain the Oracle Java Development
-   Kit from http://www.java.com.
-
-
-==================
-Out-of-Tree Builds
-==================
-
-Binary objects, libraries, and executables are generated in the same directory
-from which configure was executed (the "binary directory"), and this directory
-need not necessarily be the same as the mozjpeg source directory.  You
-can create multiple independent binary directories, in which different versions
-of mozjpeg 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 mozjpeg source
-directory.  For in-tree builds, these directories are the same.
-
-
-================
-Building mozjpeg
-================
-
-The following procedure will build mozjpeg on Linux, FreeBSD, Cygwin, and
-Solaris/x86 systems (on Solaris, this generates a 32-bit library.  See below
-for 64-bit build instructions.)
-
-Simple Release tar.gz Source Build
-----------------------------------
-
-  cd {source_directory}
-  ./configure [additional configure flags]
-  make
-
-Non-Release Source Build (e.g. GitHub clone)
---------------------------------------------
-
-  cd {source_directory}
-  autoreconf -fiv
-  cd {build_directory}
-  sh {source_directory}/configure [additional configure flags]
-  make
-
-Results
--------
-
-This will generate the following files under .libs/
-
-  libjpeg.a
-      Static link library for the libjpeg API
-
-  libjpeg.so.{version} (Linux, Unix)
-  libjpeg.{version}.dylib (OS X)
-  cygjpeg-{version}.dll (Cygwin)
-      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)
-  libjpeg.dylib (OS X)
-      Development symlink for the libjpeg API
-
-  libjpeg.dll.a (Cygwin)
-      Import library for the libjpeg API
-
-  libturbojpeg.a
-      Static link library for the TurboJPEG API
-
-  libturbojpeg.so.0.1.0 (Linux, Unix)
-  libturbojpeg.0.1.0.dylib (OS X)
-  cygturbojpeg-0.dll (Cygwin)
-      Shared library for the TurboJPEG API
-
-  libturbojpeg.so (Linux, Unix)
-  libturbojpeg.dylib (OS X)
-      Development symlink for the TurboJPEG API
-
-  libturbojpeg.dll.a (Cygwin)
-      Import library for the TurboJPEG API
-
-
-libjpeg v7 or v8 API/ABI Emulation
-----------------------------------
-
-Add --with-jpeg7 to the configure command line to build a version of
-mozjpeg that is API/ABI-compatible with libjpeg v7.  Add --with-jpeg8 to
-the configure command to build a version of mozjpeg that is
-API/ABI-compatible with libjpeg v8.  See README-turbo.txt for more information
-on libjpeg v7 and v8 emulation.
-
-
-In-Memory Source/Destination Managers
--------------------------------------
-
-When using libjpeg v6b or v7 API/ABI emulation, add --without-mem-srcdst to the
-configure command line to build a version of mozjpeg 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-turbo.txt for more information.
-
-
-Arithmetic Coding Support
--------------------------
-
-Since the patent on arithmetic coding has expired, this functionality has been
-included in this release of mozjpeg.  mozjpeg'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 --without-arith-enc or --without-arith-dec to the configure command line to
-disable encoding or decoding (respectively.)
-
-
-TurboJPEG Java Wrapper
-----------------------
-Add --with-java to the configure command line to incorporate an optional Java
-Native Interface 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 for more details.
-
-You can set the JAVAC, JAR, and JAVA configure variables to specify
-alternate commands for javac, jar, and java (respectively.)  You can also
-set the JAVACFLAGS configure variable to specify arguments that should be
-passed to the Java compiler when building the front-end classes, and JNI_CFLAGS
-to specify arguments that should be passed to the C compiler when building the
-JNI wrapper.  Run 'configure --help' for more details.
-
-
-==================
-Installing mozjpeg
-==================
-
-If you intend to install these libraries and the associated header files, then
-replace 'make' in the instructions above with
-
-  make install prefix={base dir} libdir={library directory}
-
-For example,
-
-  make install prefix=/usr/local libdir=/usr/local/lib64
-
-will install the header files in /usr/local/include and the library files in
-/usr/local/lib64.  If 'prefix' and 'libdir' are not specified, then the default
-is to install the header files in /opt/mozjpeg/include and the library
-files in /opt/mozjpeg/lib32 (32-bit) or /opt/mozjpeg/lib64
-(64-bit.)
-
-NOTE: You can specify a prefix of /usr and a libdir of, for instance,
-/usr/lib64 to overwrite the system's version of libjpeg.  If you do this,
-however, then be sure to BACK UP YOUR SYSTEM'S INSTALLATION OF LIBJPEG before
-overwriting it.  It is recommended that you instead install mozjpeg into
-a non-system directory and manipulate the LD_LIBRARY_PATH or create symlinks
-to force applications to use mozjpeg instead of libjpeg.  See
-README-turbo.txt for more information.
-
-
-=============
-Build Recipes
-=============
-
-
-32-bit Build on 64-bit Linux
-----------------------------
-
-Add
-
-  --host i686-pc-linux-gnu CFLAGS='-O3 -m32' LDFLAGS=-m32
-
-to the configure command line.
-
-
-32-bit Build on 64-bit OS X
----------------------------
-
-Add
-
-  --host i686-apple-darwin CFLAGS='-O3 -m32' LDFLAGS=-m32
-
-to the configure command line.
-
-
-64-bit Backward-Compatible Build on 64-bit OS X
------------------------------------------------
-
-Add
-
-  --host x86_64-apple-darwin NASM=/opt/local/bin/nasm \
-  CFLAGS='-isysroot /Developer/SDKs/MacOSX10.5.sdk \
-    -mmacosx-version-min=10.5 -O3' \
-    LDFLAGS='-isysroot /Developer/SDKs/MacOSX10.5.sdk \
-    -mmacosx-version-min=10.5'
-
-to the configure command line.  The OS X 10.5 SDK, and NASM 2.07 or later from
-MacPorts, must be installed.
-
-
-32-bit Backward-Compatible Build on OS X
-----------------------------------------
-
-Add
-
-  --host i686-apple-darwin \
-    CFLAGS='-isysroot /Developer/SDKs/MacOSX10.5.sdk \
-    -mmacosx-version-min=10.5 -O3 -m32' \
-    LDFLAGS='-isysroot /Developer/SDKs/MacOSX10.5.sdk \
-    -mmacosx-version-min=10.5 -m32'
-
-to the configure command line.  The OS X 10.5 SDK must be installed.
-
-
-64-bit Library Build on 64-bit Solaris
---------------------------------------
-
-Add
-
-  --host x86_64-pc-solaris CFLAGS='-O3 -m64' LDFLAGS=-m64
-
-to the configure command line.
-
-
-32-bit Build on 64-bit FreeBSD
-------------------------------
-
-Add
-
-  --host i386-unknown-freebsd CC='gcc -B /usr/lib32' CFLAGS='-O3 -m32' \
-    LDFLAGS='-B/usr/lib32'
-
-to the configure command line.  NASM 2.07 or later from FreeBSD ports must be
-installed.
-
-
-Oracle Solaris Studio
----------------------
-
-Add
-
-  CC=cc
-
-to the configure command line.  mozjpeg will automatically be built with
-the maximum optimization level (-xO5) unless you override CFLAGS.
-
-To build a 64-bit version of mozjpeg using Oracle Solaris Studio, add
-
-  --host x86_64-pc-solaris CC=cc CFLAGS='-xO5 -m64' LDFLAGS=-m64
-
-to the configure command line.
-
-
-MinGW Build on Cygwin
----------------------
-
-Use CMake (see recipes below)
-
-
-===========
-ARM Support
-===========
-
-This release of mozjpeg can use ARM NEON SIMD instructions to accelerate
-JPEG compression/decompression by approximately 2-4x on ARMv7 and later
-platforms.  If mozjpeg is configured on an ARM Linux platform, then the
-build system will automatically include the NEON SIMD routines, if they are
-supported.  Build instructions for other ARM-based platforms follow.
-
-
-Building mozjpeg for iOS
-------------------------
-
-iOS platforms, such as the iPhone and iPad, use ARM processors, some of which
-support NEON instructions.  Additional steps are required in order to build
-mozjpeg for these platforms.
-
-Additional build requirements:
-
-  gas-preprocessor.pl
-  (https://sourceforge.net/p/libjpeg-turbo/code/HEAD/tree/gas-preprocessor)
-  should be installed in your PATH.
-
-
-ARM 32-bit Build (Xcode 4.6.x and earlier, LLVM-GCC):
-
-Set the following shell variables for simplicity:
-
-  Xcode 4.2 and earlier:
-  IOS_PLATFORMDIR=/Developer/Platforms/iPhoneOS.platform
-  Xcode 4.3 and later:
-  IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-
-  IOS_SYSROOT=$IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk
-  IOS_GCC=$IOS_PLATFORMDIR/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2
-
-  ARMv6 (code will run on all iOS devices, not SIMD-accelerated):
-  [NOTE: Requires Xcode 4.4.x or earlier]
-  IOS_CFLAGS="-march=armv6 -mcpu=arm1176jzf-s -mfpu=vfp"
-
-  ARMv7 (code will run on iPhone 3GS-4S/iPad 1st-3rd Generation and newer):
-  IOS_CFLAGS="-march=armv7 -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon"
-
-  ARMv7s (code will run on iPhone 5/iPad 4th Generation and newer):
-  [NOTE: Requires Xcode 4.5 or later]
-  IOS_CFLAGS="-march=armv7s -mcpu=swift -mtune=swift -mfpu=neon"
-
-Follow the procedure under "Building mozjpeg" above, adding
-
-  --host arm-apple-darwin10 \
-    CC="$IOS_GCC" LD="$IOS_GCC" \
-    CFLAGS="-mfloat-abi=softfp -isysroot $IOS_SYSROOT -O3 $IOS_CFLAGS" \
-    LDFLAGS="-mfloat-abi=softfp -isysroot $IOS_SYSROOT $IOS_CFLAGS"
-
-to the configure command line.
-
-
-ARM 32-bit Build (Xcode 5.0.x and later, Clang):
-
-Set the following shell variables for simplicity:
-
-  IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-  IOS_SYSROOT=$IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk
-  IOS_GCC=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
-
-  ARMv7 (code will run on iPhone 3GS-4S/iPad 1st-3rd Generation and newer):
-  IOS_CFLAGS="-arch armv7"
-
-  ARMv7s (code will run on iPhone 5/iPad 4th Generation and newer):
-  IOS_CFLAGS="-arch armv7s"
-
-Follow the procedure under "Building libjpeg-turbo" above, adding
-
-  --host arm-apple-darwin10 \
-    CC="$IOS_GCC" LD="$IOS_GCC" \
-    CFLAGS="-mfloat-abi=softfp -isysroot $IOS_SYSROOT -O3 $IOS_CFLAGS" \
-    LDFLAGS="-mfloat-abi=softfp -isysroot $IOS_SYSROOT $IOS_CFLAGS" \
-    CCASFLAGS="-no-integrated-as $IOS_CFLAGS"
-
-to the configure command line.
-
-
-ARMv8 64-bit Build (Xcode 5.0.x and later, Clang):
-
-Code will run on iPhone 5S/iPad Mini 2 and newer.
-
-Set the following shell variables for simplicity:
-
-  IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-  IOS_SYSROOT=$IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk
-  IOS_GCC=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
-  IOS_CFLAGS="-arch arm64"
-
-Follow the procedure under "Building libjpeg-turbo" above, adding
-
-  --host aarch64-apple-darwin \
-    CC="$IOS_GCC" LD="$IOS_GCC" \
-    CFLAGS="-isysroot $IOS_SYSROOT -O3 $IOS_CFLAGS" \
-    LDFLAGS="-isysroot $IOS_SYSROOT $IOS_CFLAGS"
-
-to the configure command line.
-
-
-NOTE:  You can also add -miphoneos-version-min={version} to $IOS_CFLAGS above
-in order to support older versions of iOS than the default version supported by
-the SDK.
-
-Once built, lipo can be used to combine the ARMv6, v7, v7s, and/or v8 variants
-into a universal library.
-
-
-Building libjpeg-turbo for Android
-----------------------------------
-
-Building libjpeg-turbo for Android platforms requires the Android NDK
-(https://developer.android.com/tools/sdk/ndk) and autotools.  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/ndk}
-  BUILD_PLATFORM={the platform name for the NDK package you installed--
-    for example, "windows-x86" or "linux-x86_64"}
-  TOOLCHAIN_VERSION={"4.6", "4.8", etc.  This corresponds to a toolchain
-    directory under ${NDK_PATH}/toolchains/.}
-  ANDROID_VERSION={The minimum version of Android to support-- for example,
-    "9", "19", etc.}
-
-  HOST=arm-linux-androideabi
-  TOOLCHAIN=${NDK_PATH}/toolchains/${HOST}-${TOOLCHAIN_VERSION}/prebuilt/${BUILD_PLATFORM}
-  SYSROOT=${NDK_PATH}/platforms/android-${ANDROID_VERSION}/arch-arm
-  ANDROID_INCLUDES="-I${SYSROOT}/usr/include -I${TOOLCHAIN}/include"
-  ANDROID_CFLAGS="-march=armv7-a -mfloat-abi=softfp -fprefetch-loop-arrays \
-    -fstrict-aliasing --sysroot=${SYSROOT}"
-  export CPP=${TOOLCHAIN}/bin/${HOST}-cpp
-  export AR=${TOOLCHAIN}/bin/${HOST}-ar
-  export AS=${TOOLCHAIN}/bin/${HOST}-as
-  export NM=${TOOLCHAIN}/bin/${HOST}-nm
-  export CC=${TOOLCHAIN}/bin/${HOST}-gcc
-  export LD=${TOOLCHAIN}/bin/${HOST}-ld
-  export RANLIB=${TOOLCHAIN}/bin/${HOST}-ranlib
-  export OBJDUMP=${TOOLCHAIN}/bin/${HOST}-objdump
-  export STRIP=${TOOLCHAIN}/bin/${HOST}-strip
-  cd {build_directory}
-  sh {source_directory}/configure --host=${HOST} \
-    CFLAGS="${ANDROID_INCLUDES} ${ANDROID_CFLAGS} -O3" \
-    CPPFLAGS="${ANDROID_INCLUDES} ${ANDROID_CFLAGS}" \
-    LDFLAGS="${ANDROID_CFLAGS}" --with-simd ${1+"$@"}
-  make
-
-
-*******************************************************************************
-**     Building on Windows (Visual C++ or MinGW)
-*******************************************************************************
-
-
-==================
-Build Requirements
-==================
-
--- CMake (http://www.cmake.org) v2.8.8 or later
-
--- 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 mozjpeg.
-
-   * You can also use Microsoft Visual Studio Express 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 mozjpeg 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
-
-   MinGW-builds (http://sourceforge.net/projects/mingwbuilds/) 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.
-
--- NASM (http://www.nasm.us/) 0.98 or later (NASM 2.05 or later is required for
-   a 64-bit build)
-
--- If building the TurboJPEG Java wrapper, JDK 1.5 or later is required.  This
-   can be downloaded from http://www.java.com.
-
-
-==================
-Out-of-Tree Builds
-==================
-
-Binary objects, libraries, and executables are generated in the same directory
-from which cmake was executed (the "binary directory"), and this directory need
-not necessarily be the same as the mozjpeg source directory.  You can
-create multiple independent binary directories, in which different versions of
-mozjpeg 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 mozjpeg source
-directory.  For in-tree builds, these directories are the same.
-
-
-================
-Building mozjpeg
-================
-
-
-Visual C++ (Command Line)
--------------------------
-
-  cd {build_directory}
-  cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release {source_directory}
-  nmake
-
-This will build either a 32-bit or a 64-bit version of mozjpeg, depending
-on which version of cl.exe is in the PATH.
-
-The following files will be generated under {build_directory}:
-
-  jpeg-static.lib
-      Static link library for the libjpeg API
-  sharedlib/jpeg{version}.dll
-      DLL for the libjpeg API
-  sharedlib/jpeg.lib
-      Import library for the libjpeg API
-  turbojpeg-static.lib
-      Static link library for the TurboJPEG API
-  turbojpeg.dll
-      DLL for the TurboJPEG API
-  turbojpeg.lib
-      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" {source_directory}
-
-NOTE:  Add "Win64" to the generator name (for example, "Visual Studio 10
-Win64") to build a 64-bit version of libjpeg-turbo.  Recent versions of CMake
-no longer document that.  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 mozjpeg.
-
-This will generate the following files under {build_directory}:
-
-  {configuration}/jpeg-static.lib
-      Static link library for the libjpeg API
-  sharedlib/{configuration}/jpeg{version}.dll
-      DLL for the libjpeg API
-  sharedlib/{configuration}/jpeg.lib
-      Import library for the libjpeg API
-  {configuration}/turbojpeg-static.lib
-      Static link library for the TurboJPEG API
-  {configuration}/turbojpeg.dll
-      DLL for the TurboJPEG API
-  {configuration}/turbojpeg.lib
-      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.  If you are
-cross-compiling on a Linux/Unix machine, then see "Build Recipes" below.
-
-  cd {build_directory}
-  cmake -G "MinGW Makefiles" {source_directory}
-  mingw32-make
-
-This will generate the following files under {build_directory}
-
-  libjpeg.a
-      Static link library for the libjpeg API
-  sharedlib/libjpeg-{version}.dll
-      DLL for the libjpeg API
-  sharedlib/libjpeg.dll.a
-      Import library for the libjpeg API
-  libturbojpeg.a
-      Static link library for the TurboJPEG API
-  libturbojpeg.dll
-      DLL for the TurboJPEG API
-  libturbojpeg.dll.a
-      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
-mozjpeg that is API/ABI-compatible with libjpeg v7.  Add "-DWITH_JPEG8=1"
-to the cmake command to build a version of mozjpeg that is
-API/ABI-compatible with libjpeg v8.  See README-turbo.txt for more information
-on 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 mozjpeg 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-turbo.txt for more information.
-
-
-Arithmetic Coding Support
--------------------------
-
-Since the patent on arithmetic coding has expired, this functionality has been
-included in this release of mozjpeg.  mozjpeg'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 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 for more details.
-
-If you are using CMake 2.8, you can set the Java_JAVAC_EXECUTABLE,
-Java_JAVA_EXECUTABLE, and Java_JAR_EXECUTABLE CMake variables to specify
-alternate commands or locations for javac, jar, and java (respectively.)  If
-you are using CMake 2.6, set JAVA_COMPILE, JAVA_RUNTIME, and JAVA_ARCHIVE
-instead.  You can also set the JAVACFLAGS CMake variable to specify arguments
-that should be passed to the Java compiler when building the front-end classes.
-
-
-==================
-Installing mozjpeg
-==================
-
-You can use the build system to install mozjpeg into a directory of your
-choosing (as opposed to creating an installer.)  To do this, add:
-
-  -DCMAKE_INSTALL_PREFIX={install_directory}
-
-to the cmake command line.
-
-For example,
-
-  cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release \
-    -DCMAKE_INSTALL_PREFIX=c:\mozjpeg {source_directory}
-  nmake install
-
-will install the header files in c:\mozjpeg\include, the library files
-in c:\mozjpeg\lib, the DLL's in c:\mozjpeg\bin, and the
-documentation in c:\mozjpeg\doc.
-
-
-=============
-Build Recipes
-=============
-
-
-64-bit MinGW Build on Cygwin
-----------------------------
-
-  cd {build_directory}
-  CC=/usr/bin/x86_64-w64-mingw32-gcc \
-    cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-    -DCMAKE_RC_COMPILER=/usr/bin/x86_64-w64-mingw32-windres.exe \
-    {source_directory}
-  make
-
-This produces a 64-bit build of mozjpeg that does not depend on
-cygwin1.dll or other Cygwin DLL's.  The mingw64-x86_64-gcc-core and
-mingw64-x86_64-gcc-g++ packages (and their dependencies) must be installed.
-
-
-32-bit MinGW Build on Cygwin
-----------------------------
-
-  cd {build_directory}
-  CC=/usr/bin/i686-w64-mingw32-gcc \
-    cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-    -DCMAKE_RC_COMPILER=/usr/bin/i686-w64-mingw32-windres.exe \
-    {source_directory}
-  make
-
-This produces a 32-bit build of mozjpeg that does not depend on
-cygwin1.dll or other Cygwin DLL's.  The mingw64-i686-gcc-core and
-mingw64-i686-gcc-g++ packages (and their dependencies) must be installed.
-
-
-MinGW Build on Linux
---------------------
-
-  cd {build_directory}
-  CC={mingw_binary_path}/i386-mingw32-gcc \
-    cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-    -DCMAKE_AR={mingw_binary_path}/i386-mingw32-ar \
-    -DCMAKE_RANLIB={mingw_binary_path}/i386-mingw32-ranlib \
-    {source_directory}
-  make
-
-
-*******************************************************************************
-**     Creating Release Packages
-*******************************************************************************
-
-The following commands can be used to create various types of release packages:
-
-
-Unix/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.
-
-make dmg
-
-  Create Macintosh 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 [BUILDDIR32={32-bit build directory}]
-
-  On 64-bit OS X systems, this creates a Macintosh package and disk image that
-  contains universal i386/x86-64 binaries.  You should first configure a 32-bit
-  out-of-tree build of mozjpeg, then configure a 64-bit out-of-tree
-  build, then run 'make udmg' from the 64-bit build directory.  The build
-  system will look for the 32-bit build under {source_directory}/osxx86 by
-  default, but you can override this by setting the BUILDDIR32 variable on the
-  make command line as shown above.
-
-make iosdmg [BUILDDIR32={32-bit build directory}] \
-  [BUILDDIRARMV6={ARMv6 build directory}] \
-  [BUILDDIRARMV7={ARMv7 build directory}] \
-  [BUILDDIRARMV7S={ARMv7s build directory}] \
-  [BUILDDIRARMV8={ARMv8 build directory}]
-
-  On OS X systems, this creates a Macintosh package and disk image in which the
-  mozjpeg static libraries contain ARM architectures necessary to build
-  iOS applications.  If building on an x86-64 system, the binaries will also
-  contain the i386 architecture, as with 'make udmg' above.  You should first
-  configure ARMv6, ARMv7, ARMv7s, and/or ARMv8 out-of-tree builds of
-  mozjpeg (see "Building mozjpeg for iOS" above.)  If you are
-  building an x86-64 version of mozjpeg, you should configure a 32-bit
-  out-of-tree build as well.  Next, build mozjpeg as you would normally,
-  using an out-of-tree build.  When it is built, run 'make iosdmg' from the
-  build directory.  The build system will look for the ARMv6 build under
-  {source_directory}/iosarmv6 by default, the ARMv7 build under
-  {source_directory}/iosarmv7 by default, the ARMv7s build under
-  {source_directory}/iosarmv7s by default, the ARMv8 build under
-  {source_directory}/iosarmv8 by default, and (if applicable) the 32-bit build
-  under {source_directory}/osxx86 by default, but you can override this by
-  setting the BUILDDIR32, BUILDDIRARMV6, BUILDDIRARMV7, BUILDDIRARMV7S, and/or
-  BUILDDIRARMV8 variables on the make command line as shown above.
-
-  NOTE: If including an ARMv8 build in the package, then you may need to use
-  Xcode's version of lipo instead of the operating system's.  To do this, pass
-  an argument of LIPO="xcrun lipo" on the make command line.
-
-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" project.
-
-The installer package (mozjpeg[-gcc][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 mozjpeg is by invoking 'make test' on
-Unix/Linux platforms or 'ctest' on Windows platforms, once the build has
-completed.  This runs a series of tests to ensure that mathematical
-compatibility has been maintained.  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' or 'nmake testclean' (if using NMake) or building
-the 'testclean' target (if using the Visual Studio IDE) will clean up the
-output images generated by 'make test'.
-
-On Unix/Linux 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 (this includes 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.

CODE_OF_CONDUCT.md

@@ -0,0 +1,15 @@
+# Community Participation Guidelines
+
+This repository is governed by Mozilla's code of conduct and etiquette guidelines. 
+For more details, please read the
+[Mozilla Community Participation Guidelines](https://www.mozilla.org/about/governance/policies/participation/). 
+
+## How to Report
+For more information on how to report violations of the Community Participation Guidelines, please read our '[How to Report](https://www.mozilla.org/about/governance/policies/participation/reporting/)' page.
+
+<!--
+## Project Specific Etiquette
+
+In some cases, there will be additional project etiquette i.e.: (https://bugzilla.mozilla.org/page.cgi?id=etiquette.html).
+Please update for your project.
+-->

ChangeLog.txt

@@ -1,646 +0,0 @@
-1.4.0
-=====
-
-[1] Fixed a build issue on OS X PowerPC platforms (md5cmp failed to build
-because OS X does not provide the le32toh() and htole32() functions.)
-
-[2] The non-SIMD RGB565 color conversion code did not work correctly on big
-endian machines.  This has been fixed.
-
-[3] Fixed an issue in tjPlaneSizeYUV() whereby it would erroneously return 1
-instead of -1 if componentID was > 0 and subsamp was TJSAMP_GRAY.
-
-[3] Fixed an issue in tjBufSizeYUV2() wherby it would erroneously return 0
-instead of -1 if width was < 1.
-
-[5] The Huffman encoder now uses clz and bsr instructions for bit counting on
-ARM64 platforms (see 1.4 beta1 [5].)
-
-[6] The close() method in the TJCompressor and TJDecompressor Java classes is
-now idempotent.  Previously, that method would call the native tjDestroy()
-function even if the TurboJPEG instance had already been destroyed.  This
-caused an exception to be thrown during finalization, if the close() method had
-already been called.  The exception was caught, but it was still an expensive
-operation.
-
-[7] The TurboJPEG API previously generated an error ("Could not determine
-subsampling type for JPEG image") when attempting to decompress grayscale JPEG
-images that were compressed with a sampling factor other than 1 (for instance,
-with 'cjpeg -grayscale -sample 2x2').  Subsampling technically has no meaning
-with grayscale JPEGs, and thus the horizontal and vertical sampling factors
-for such images are ignored by the decompressor.  However, the TurboJPEG API
-was being too rigid and was expecting the sampling factors to be equal to 1
-before it treated the image as a grayscale JPEG.
-
-[8] cjpeg, djpeg, and jpegtran now accept an argument of -version, which will
-print the library version and exit.
-
-[9] Referring to 1.4 beta1 [15], another extremely rare circumstance was
-discovered under which the Huffman encoder's local buffer can be overrun
-when a buffered destination manager is being used and an
-extremely-high-frequency block (basically junk image data) is being encoded.
-Even though the Huffman local buffer was increased from 128 bytes to 136 bytes
-to address the previous issue, the new issue caused even the larger buffer to
-be overrun.  Further analysis reveals that, in the absolute worst case (such as
-setting alternating AC coefficients to 32767 and -32768 in the JPEG scanning
-order), the Huffman encoder can produce encoded blocks that approach double the
-size of the unencoded blocks.  Thus, the Huffman local buffer was increased to
-256 bytes, which should prevent any such issue from re-occurring in the future.
-
-[10] The new tjPlaneSizeYUV(), tjPlaneWidth(), and tjPlaneHeight() functions
-were not actually usable on any platform except OS X and Windows, because
-those functions were not included in the libturbojpeg mapfile.  This has been
-fixed.
-
-[11] Restored the JPP(), JMETHOD(), and FAR macros in the libjpeg-turbo header
-files.  The JPP() and JMETHOD() macros were originally implemented in libjpeg
-as a way of supporting non-ANSI compilers that lacked support for prototype
-parameters.  libjpeg-turbo has never supported such compilers, but some
-software packages still use the macros to define their own prototypes.
-Similarly, libjpeg-turbo has never supported MS-DOS and other platforms that
-have far symbols, but some software packages still use the FAR macro.  A pretty
-good argument can be made that this is a bad practice on the part of the
-software in question, but since this affects more than one package, it's just
-easier to fix it here.
-
-[12] Fixed issues that were preventing the ARM 64-bit SIMD code from compiling
-for iOS, and included an ARMv8 architecture in all of the binaries installed by
-the "official" libjpeg-turbo SDK for OS X.
-
-
-1.3.90 (1.4 beta1)
-==================
-
-[1] New features in the TurboJPEG API:
--- YUV planar images can now be generated with an arbitrary line padding
-(previously only 4-byte padding, which was compatible with X Video, was
-supported.)
--- The decompress-to-YUV function has been extended to support image scaling.
--- JPEG images can now be compressed from YUV planar source images.
--- YUV planar images can now be decoded into RGB or grayscale images.
--- 4:1:1 subsampling is now supported.  This is mainly included for
-compatibility, since 4:1:1 is not fully accelerated in libjpeg-turbo and has no
-significant advantages relative to 4:2:0.
--- CMYK images are now supported.  This feature allows CMYK source images to be
-compressed to YCCK JPEGs and YCCK or CMYK JPEGs to be decompressed to CMYK
-destination images.  Conversion between CMYK/YCCK and RGB or YUV images is not
-supported.  Such conversion requires a color management system and is thus out
-of scope for a codec library.
--- The handling of YUV images in the Java API has been significantly refactored
-and should now be much more intuitive.
--- The Java API now supports encoding a YUV image from an arbitrary position in
-a large image buffer.
--- All of the YUV functions now have a corresponding function that operates on
-separate image planes instead of a unified image buffer.  This allows for
-compressing/decoding from or decompressing/encoding to a subregion of a larger
-YUV image.  It also allows for handling YUV formats that swap the order of the
-U and V planes.
-
-[2] Added SIMD acceleration for DSPr2-capable MIPS platforms.  This speeds up
-the compression of full-color JPEGs by 70-80% on such platforms and
-decompression by 25-35%.
-
-[3] If an application attempts to decompress a Huffman-coded JPEG image whose
-header does not contain Huffman tables, libjpeg-turbo will now insert the
-default Huffman tables.  In order to save space, many motion JPEG video frames
-are encoded without the default Huffman tables, so these frames can now be
-successfully decompressed by libjpeg-turbo without additional work on the part
-of the application.  An application can still override the Huffman tables, for
-instance to re-use tables from a previous frame of the same video.
-
-[4] The Mac packaging system now uses pkgbuild and productbuild rather than
-PackageMaker (which is obsolete and no longer supported.)  This means that
-OS X 10.6 "Snow Leopard" or later must be used when packaging libjpeg-turbo,
-although the packages produced can be installed on OS X 10.5 "Leopard" or
-later.  OS X 10.4 "Tiger" is no longer supported.
-
-[5] The Huffman encoder now uses clz and bsr instructions for bit counting on
-ARM platforms rather than a lookup table.  This reduces the memory footprint
-by 64k, which may be important for some mobile applications.  Out of four
-Android devices that were tested, two demonstrated a small overall performance
-loss (~3-4% on average) with ARMv6 code and a small gain (also ~3-4%) with
-ARMv7 code when enabling this new feature, but the other two devices
-demonstrated a significant overall performance gain with both ARMv6 and ARMv7
-code (~10-20%) when enabling the feature.  Actual mileage may vary.
-
-[6] Worked around an issue with Visual C++ 2010 and later that caused incorrect
-pixels to be generated when decompressing a JPEG image to a 256-color bitmap,
-if compiler optimization was enabled when libjpeg-turbo was built.  This caused
-the regression tests to fail when doing a release build under Visual C++ 2010
-and later.
-
-[7] Improved the accuracy and performance of the non-SIMD implementation of the
-floating point inverse DCT (using code borrowed from libjpeg v8a and later.)
-The accuracy of this implementation now matches the accuracy of the SSE/SSE2
-implementation.  Note, however, that the floating point DCT/IDCT algorithms are
-mainly a legacy feature.  They generally do not produce significantly better
-accuracy than the slow integer DCT/IDCT algorithms, and they are quite a bit
-slower.
-
-[8] Added a new output colorspace (JCS_RGB565) to the libjpeg API that allows
-for decompressing JPEG images into RGB565 (16-bit) pixels.  If dithering is not
-used, then this code path is SIMD-accelerated on ARM platforms.
-
-[9] Numerous obsolete features, such as support for non-ANSI compilers and
-support for the MS-DOS memory model, were removed from the libjpeg code,
-greatly improving its readability and making it easier to maintain and extend.
-
-[10] Fixed a segfault that occurred when calling output_message() with msg_code
-set to JMSG_COPYRIGHT.
-
-[11] Fixed an issue whereby wrjpgcom was allowing comments longer than 65k
-characters to be passed on the command line, which was causing it to generate
-incorrect JPEG files.
-
-[12] Fixed a bug in the build system that was causing the Windows version of
-wrjpgcom to be built using the rdjpgcom source code.
-
-[13] Restored 12-bit-per-component JPEG support.  A 12-bit version of
-libjpeg-turbo can now be built by passing an argument of --with-12bit to
-configure (Unix) or -DWITH_12BIT=1 to cmake (Windows.)  12-bit JPEG support is
-included only for convenience.  Enabling this feature disables all of the
-performance features in libjpeg-turbo, as well as arithmetic coding and the
-TurboJPEG API.  The resulting library still contains the other libjpeg-turbo
-features (such as the colorspace extensions), but in general, it performs no
-faster than libjpeg v6b.
-
-[14] Added ARM 64-bit SIMD acceleration for the YCC-to-RGB color conversion
-and IDCT algorithms (both are used during JPEG decompression.)  For unknown
-reasons (probably related to clang), this code cannot currently be compiled for
-iOS.
-
-[15] Fixed an extremely rare bug that could cause the Huffman encoder's local
-buffer to overrun when a very high-frequency MCU is compressed using quality
-100 and no subsampling, and when the JPEG output buffer is being dynamically
-resized by the destination manager.  This issue was so rare that, even with a
-test program specifically designed to make the bug occur (by injecting random
-high-frequency YUV data into the compressor), it was reproducible only once in
-about every 25 million iterations.
-
-[16] Fixed an oversight in the TurboJPEG C wrapper:  if any of the JPEG
-compression functions was called repeatedly with the same
-automatically-allocated destination buffer, then TurboJPEG would erroneously
-assume that the jpegSize parameter was equal to the size of the buffer, when in
-fact that parameter was probably equal to the size of the most recently
-compressed JPEG image.  If the size of the previous JPEG image was not as large
-as the current JPEG image, then TurboJPEG would unnecessarily reallocate the
-destination buffer.
-
-
-1.3.1
-=====
-
-[1] On Un*x systems, 'make install' now installs the libjpeg-turbo libraries
-into /opt/libjpeg-turbo/lib32 by default on any 32-bit system, not just x86,
-and into /opt/libjpeg-turbo/lib64 by default on any 64-bit system, not just
-x86-64.  You can override this by overriding either the 'prefix' or 'libdir'
-configure variables.
-
-[2] The Windows installer now places a copy of the TurboJPEG DLLs in the same
-directory as the rest of the libjpeg-turbo binaries.  This was mainly done
-to support TurboVNC 1.3, which bundles the DLLs in its Windows installation.
-When using a 32-bit version of CMake on 64-bit Windows, it is impossible to
-access the c:\WINDOWS\system32 directory, which made it impossible for the
-TurboVNC build scripts to bundle the 64-bit TurboJPEG DLL.
-
-[3] Fixed a bug whereby attempting to encode a progressive JPEG with arithmetic
-entropy coding (by passing arguments of -progressive -arithmetic to cjpeg or
-jpegtran, for instance) would result in an error, "Requested feature was
-omitted at compile time".
-
-[4] Fixed a couple of issues whereby malformed JPEG images would cause
-libjpeg-turbo to use uninitialized memory during decompression.
-
-[5] Fixed an error ("Buffer passed to JPEG library is too small") that occurred
-when calling the TurboJPEG YUV encoding function with a very small (< 5x5)
-source image, and added a unit test to check for this error.
-
-[6] The Java classes should now build properly under Visual Studio 2010 and
-later.
-
-[7] Fixed an issue that prevented SRPMs generated using the in-tree packaging
-tools from being rebuilt on certain newer Linux distributions.
-
-[8] Numerous minor fixes to eliminate compilation and build/packaging system
-warnings, fix cosmetic issues, improve documentation clarity, and other general
-source cleanup.
-
-
-1.3.0
-=====
-
-[1] 'make test' now works properly on FreeBSD, and it no longer requires the
-md5sum executable to be present on other Un*x platforms.
-
-[2] Overhauled the packaging system:
--- To avoid conflict with vendor-supplied libjpeg-turbo packages, the
-official RPMs and DEBs for libjpeg-turbo have been renamed to
-"libjpeg-turbo-official".
--- The TurboJPEG libraries are now located under /opt/libjpeg-turbo in the
-official Linux and Mac packages, to avoid conflict with vendor-supplied
-packages and also to streamline the packaging system.
--- Release packages are now created with the directory structure defined
-by the configure variables "prefix", "bindir", "libdir", etc. (Un*x) or by the
-CMAKE_INSTALL_PREFIX variable (Windows.)  The exception is that the docs are
-always located under the system default documentation directory on Un*x and Mac
-systems, and on Windows, the TurboJPEG DLL is always located in the Windows
-system directory.
--- To avoid confusion, official libjpeg-turbo packages on Linux/Unix platforms
-(except for Mac) will always install the 32-bit libraries in
-/opt/libjpeg-turbo/lib32 and the 64-bit libraries in /opt/libjpeg-turbo/lib64.
--- Fixed an issue whereby, in some cases, the libjpeg-turbo executables on Un*x
-systems were not properly linking with the shared libraries installed by the
-same package.
--- Fixed an issue whereby building the "installer" target on Windows when
-WITH_JAVA=1 would fail if the TurboJPEG JAR had not been previously built.
--- Building the "install" target on Windows now installs files into the same
-places that the installer does.
-
-[3] Fixed a Huffman encoder bug that prevented I/O suspension from working
-properly.
-
-
-1.2.90 (1.3 beta1)
-==================
-
-[1] Added support for additional scaling factors (3/8, 5/8, 3/4, 7/8, 9/8, 5/4,
-11/8, 3/2, 13/8, 7/4, 15/8, and 2) when decompressing.  Note that the IDCT will
-not be SIMD-accelerated when using any of these new scaling factors.
-
-[2] The TurboJPEG dynamic library is now versioned.  It was not strictly
-necessary to do so, because TurboJPEG uses versioned symbols, and if a function
-changes in an ABI-incompatible way, that function is renamed and a legacy
-function is provided to maintain backward compatibility.  However, certain
-Linux distro maintainers have a policy against accepting any library that isn't
-versioned.
-
-[3] Extended the TurboJPEG Java API so that it can be used to compress a JPEG
-image from and decompress a JPEG image to an arbitrary position in a large
-image buffer.
-
-[4] The tjDecompressToYUV() function now supports the TJFLAG_FASTDCT flag.
-
-[5] The 32-bit supplementary package for amd64 Debian systems now provides
-symlinks in /usr/lib/i386-linux-gnu for the TurboJPEG libraries in /usr/lib32.
-This allows those libraries to be used on MultiArch-compatible systems (such as
-Ubuntu 11 and later) without setting the linker path.
-
-[6] The TurboJPEG Java wrapper should now find the JNI library on Mac systems
-without having to pass -Djava.library.path=/usr/lib to java.
-
-[7] TJBench has been ported to Java to provide a convenient way of validating
-the performance of the TurboJPEG Java API.  It can be run with
-'java -cp turbojpeg.jar TJBench'.
-
-[8] cjpeg can now be used to generate JPEG files with the RGB colorspace
-(feature ported from jpeg-8d.)
-
-[9] The width and height in the -crop argument passed to jpegtran can now be
-suffixed with "f" to indicate that, when the upper left corner of the cropping
-region is automatically moved to the nearest iMCU boundary, the bottom right
-corner should be moved by the same amount.  In other words, this feature causes
-jpegtran to strictly honor the specified width/height rather than the specified
-bottom right corner (feature ported from jpeg-8d.)
-
-[10] JPEG files using the RGB colorspace can now be decompressed into grayscale
-images (feature ported from jpeg-8d.)
-
-[11] Fixed a regression caused by 1.2.1[7] whereby the build would fail with
-multiple "Mismatch in operand sizes" errors when attempting to build the x86
-SIMD code with NASM 0.98.
-
-[12] The in-memory source/destination managers (jpeg_mem_src() and
-jpeg_mem_dest()) are now included by default when building libjpeg-turbo with
-libjpeg v6b or v7 emulation, so that programs can take advantage of these
-functions without requiring the use of the backward-incompatible libjpeg v8
-ABI.  The "age number" of the libjpeg-turbo library on Un*x systems has been
-incremented by 1 to reflect this.  You can disable this feature with a
-configure/CMake switch in order to retain strict API/ABI compatibility with the
-libjpeg v6b or v7 API/ABI (or with previous versions of libjpeg-turbo.)  See
-README-turbo.txt for more details.
-
-[13] Added ARMv7s architecture to libjpeg.a and libturbojpeg.a in the official
-libjpeg-turbo binary package for OS X, so that those libraries can be used to
-build applications that leverage the faster CPUs in the iPhone 5 and iPad 4.
-
-
-1.2.1
-=====
-
-[1] Creating or decoding a JPEG file that uses the RGB colorspace should now
-properly work when the input or output colorspace is one of the libjpeg-turbo
-colorspace extensions.
-
-[2] When libjpeg-turbo was built without SIMD support and merged (non-fancy)
-upsampling was used along with an alpha-enabled colorspace during
-decompression, the unused byte of the decompressed pixels was not being set to
-0xFF.  This has been fixed.  TJUnitTest has also been extended to test for the
-correct behavior of the colorspace extensions when merged upsampling is used.
-
-[3] Fixed a bug whereby the libjpeg-turbo SSE2 SIMD code would not preserve the
-upper 64 bits of xmm6 and xmm7 on Win64 platforms, which violated the Win64
-calling conventions.
-
-[4] Fixed a regression caused by 1.2.0[6] whereby decompressing corrupt JPEG
-images (specifically, images in which the component count was erroneously set
-to a large value) would cause libjpeg-turbo to segfault.
-
-[5] Worked around a severe performance issue with "Bobcat" (AMD Embedded APU)
-processors.  The MASKMOVDQU instruction, which was used by the libjpeg-turbo
-SSE2 SIMD code, is apparently implemented in microcode on AMD processors, and
-it is painfully slow on Bobcat processors in particular.  Eliminating the use
-of this instruction improved performance by an order of magnitude on Bobcat
-processors and by a small amount (typically 5%) on AMD desktop processors.
-
-[6] Added SIMD acceleration for performing 4:2:2 upsampling on NEON-capable ARM
-platforms.  This speeds up the decompression of 4:2:2 JPEGs by 20-25% on such
-platforms.
-
-[7] Fixed a regression caused by 1.2.0[2] whereby, on Linux/x86 platforms
-running the 32-bit SSE2 SIMD code in libjpeg-turbo, decompressing a 4:2:0 or
-4:2:2 JPEG image into a 32-bit (RGBX, BGRX, etc.) buffer without using fancy
-upsampling would produce several incorrect columns of pixels at the right-hand
-side of the output image if each row in the output image was not evenly
-divisible by 16 bytes.
-
-[8] Fixed an issue whereby attempting to build the SIMD extensions with Xcode
-4.3 on OS X platforms would cause NASM to return numerous errors of the form
-"'%define' expects a macro identifier".
-
-[9] Added flags to the TurboJPEG API that allow the caller to force the use of
-either the fast or the accurate DCT/IDCT algorithms in the underlying codec.
-
-
-1.2.0
-=====
-
-[1] Fixed build issue with YASM on Unix systems (the libjpeg-turbo build system
-was not adding the current directory to the assembler include path, so YASM
-was not able to find jsimdcfg.inc.)
-
-[2] Fixed out-of-bounds read in SSE2 SIMD code that occurred when decompressing
-a JPEG image to a bitmap buffer whose size was not a multiple of 16 bytes.
-This was more of an annoyance than an actual bug, since it did not cause any
-actual run-time problems, but the issue showed up when running libjpeg-turbo in
-valgrind.  See http://crbug.com/72399 for more information.
-
-[3] Added a compile-time macro (LIBJPEG_TURBO_VERSION) that can be used to
-check the version of libjpeg-turbo against which an application was compiled.
-
-[4] Added new RGBA/BGRA/ABGR/ARGB colorspace extension constants (libjpeg API)
-and pixel formats (TurboJPEG API), which allow applications to specify that,
-when decompressing to a 4-component RGB buffer, the unused byte should be set
-to 0xFF so that it can be interpreted as an opaque alpha channel.
-
-[5] Fixed regression issue whereby DevIL failed to build against libjpeg-turbo
-because libjpeg-turbo's distributed version of jconfig.h contained an INLINE
-macro, which conflicted with a similar macro in DevIL.  This macro is used only
-internally when building libjpeg-turbo, so it was moved into config.h.
-
-[6] libjpeg-turbo will now correctly decompress erroneous CMYK/YCCK JPEGs whose
-K component is assigned a component ID of 1 instead of 4.  Although these files
-are in violation of the spec, other JPEG implementations handle them
-correctly.
-
-[7] Added ARMv6 and ARMv7 architectures to libjpeg.a and libturbojpeg.a in
-the official libjpeg-turbo binary package for OS X, so that those libraries can
-be used to build both OS X and iOS applications.
-
-
-1.1.90 (1.2 beta1)
-==================
-
-[1] Added a Java wrapper for the TurboJPEG API.  See java/README for more
-details.
-
-[2] The TurboJPEG API can now be used to scale down images during
-decompression.
-
-[3] Added SIMD routines for RGB-to-grayscale color conversion, which
-significantly improves the performance of grayscale JPEG compression from an
-RGB source image.
-
-[4] Improved the performance of the C color conversion routines, which are used
-on platforms for which SIMD acceleration is not available.
-
-[5] Added a function to the TurboJPEG API that performs lossless transforms.
-This function is implemented using the same back end as jpegtran, but it
-performs transcoding entirely in memory and allows multiple transforms and/or
-crop operations to be batched together, so the source coefficients only need to
-be read once.  This is useful when generating image tiles from a single source
-JPEG.
-
-[6] Added tests for the new TurboJPEG scaled decompression and lossless
-transform features to tjbench (the TurboJPEG benchmark, formerly called
-"jpgtest".)
-
-[7] Added support for 4:4:0 (transposed 4:2:2) subsampling in TurboJPEG, which
-was necessary in order for it to read 4:2:2 JPEG files that had been losslessly
-transposed or rotated 90 degrees.
-
-[8] All legacy VirtualGL code has been re-factored, and this has allowed
-libjpeg-turbo, in its entirety, to be re-licensed under a BSD-style license.
-
-[9] libjpeg-turbo can now be built with YASM.
-
-[10] Added SIMD acceleration for ARM Linux and iOS platforms that support
-NEON instructions.
-
-[11] Refactored the TurboJPEG C API and documented it using Doxygen.  The
-TurboJPEG 1.2 API uses pixel formats to define the size and component order of
-the uncompressed source/destination images, and it includes a more efficient
-version of TJBUFSIZE() that computes a worst-case JPEG size based on the level
-of chrominance subsampling.  The refactored implementation of the TurboJPEG API
-now uses the libjpeg memory source and destination managers, which allows the
-TurboJPEG compressor to grow the JPEG buffer as necessary.
-
-[12] Eliminated errors in the output of jpegtran on Windows that occurred when
-the application was invoked using I/O redirection
-(jpegtran <input.jpg >output.jpg).
-
-[13] The inclusion of libjpeg v7 and v8 emulation as well as arithmetic coding
-support in libjpeg-turbo v1.1.0 introduced several new error constants in
-jerror.h, and these were mistakenly enabled for all emulation modes, causing
-the error enum in libjpeg-turbo to sometimes have different values than the
-same enum in libjpeg.  This represents an ABI incompatibility, and it caused
-problems with rare applications that took specific action based on a particular
-error value.  The fix was to include the new error constants conditionally
-based on whether libjpeg v7 or v8 emulation was enabled.
-
-[14] Fixed an issue whereby Windows applications that used libjpeg-turbo would
-fail to compile if the Windows system headers were included before jpeglib.h.
-This issue was caused by a conflict in the definition of the INT32 type.
-
-[15] Fixed 32-bit supplementary package for amd64 Debian systems, which was
-broken by enhancements to the packaging system in 1.1.
-
-[16] When decompressing a JPEG image using an output colorspace of
-JCS_EXT_RGBX, JCS_EXT_BGRX, JCS_EXT_XBGR, or JCS_EXT_XRGB, libjpeg-turbo will
-now set the unused byte to 0xFF, which allows applications to interpret that
-byte as an alpha channel (0xFF = opaque).
-
-
-1.1.1
-=====
-
-[1] Fixed a 1-pixel error in row 0, column 21 of the luminance plane generated
-by tjEncodeYUV().
-
-[2] libjpeg-turbo's accelerated Huffman decoder previously ignored unexpected
-markers found in the middle of the JPEG data stream during decompression.  It
-will now hand off decoding of a particular block to the unaccelerated Huffman
-decoder if an unexpected marker is found, so that the unaccelerated Huffman
-decoder can generate an appropriate warning.
-
-[3] Older versions of MinGW64 prefixed symbol names with underscores by
-default, which differed from the behavior of 64-bit Visual C++.  MinGW64 1.0
-has adopted the behavior of 64-bit Visual C++ as the default, so to accommodate
-this, the libjpeg-turbo SIMD function names are no longer prefixed with an
-underscore when building with MinGW64.  This means that, when building
-libjpeg-turbo with older versions of MinGW64, you will now have to add
--fno-leading-underscore to the CFLAGS.
-
-[4] Fixed a regression bug in the NSIS script that caused the Windows installer
-build to fail when using the Visual Studio IDE.
-
-[5] Fixed a bug in jpeg_read_coefficients() whereby it would not initialize
-cinfo->image_width and cinfo->image_height if libjpeg v7 or v8 emulation was
-enabled.  This specifically caused the jpegoptim program to fail if it was
-linked against a version of libjpeg-turbo that was built with libjpeg v7 or v8
-emulation.
-
-[6] Eliminated excessive I/O overhead that occurred when reading BMP files in
-cjpeg.
-
-[7] Eliminated errors in the output of cjpeg on Windows that occurred when the
-application was invoked using I/O redirection (cjpeg <inputfile >output.jpg).
-
-
-1.1.0
-=====
-
-[1] The algorithm used by the SIMD quantization function cannot produce correct
-results when the JPEG quality is >= 98 and the fast integer forward DCT is
-used.  Thus, the non-SIMD quantization function is now used for those cases,
-and libjpeg-turbo should now produce identical output to libjpeg v6b in all
-cases.
-
-[2] Despite the above, the fast integer forward DCT still degrades somewhat for
-JPEG qualities greater than 95, so the TurboJPEG wrapper will now automatically
-use the slow integer forward DCT when generating JPEG images of quality 96 or
-greater.  This reduces compression performance by as much as 15% for these
-high-quality images but is necessary to ensure that the images are perceptually
-lossless.  It also ensures that the library can avoid the performance pitfall
-created by [1].
-
-[3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
-
-[4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in
-the RGB-to-luminance lookup tables.
-
-[5] The Windows distribution packages now include the libjpeg run-time programs
-(cjpeg, etc.)
-
-[6] All packages now include jpgtest.
-
-[7] The TurboJPEG dynamic library now uses versioned symbols.
-
-[8] Added two new TurboJPEG API functions, tjEncodeYUV() and
-tjDecompressToYUV(), to replace the somewhat hackish TJ_YUV flag.
-
-
-1.0.90 (1.1 beta1)
-==================
-
-[1] Added emulation of the libjpeg v7 and v8 APIs and ABIs.  See
-README-turbo.txt for more details.  This feature was sponsored by CamTrace SAS.
-
-[2] Created a new CMake-based build system for the Visual C++ and MinGW builds.
-
-[3] Grayscale bitmaps can now be compressed from/decompressed to using the
-TurboJPEG API.
-
-[4] jpgtest can now be used to test decompression performance with existing
-JPEG images.
-
-[5] If the default install prefix (/opt/libjpeg-turbo) is used, then
-'make install' now creates /opt/libjpeg-turbo/lib32 and
-/opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary
-packages.
-
-[6] All symbols in the libjpeg-turbo dynamic library are now versioned, even
-when the library is built with libjpeg v6b emulation.
-
-[7] Added arithmetic encoding and decoding support (can be disabled with
-configure or CMake options)
-
-[8] Added a TJ_YUV flag to the TurboJPEG API, which causes both the compressor
-and decompressor to output planar YUV images.
-
-[9] Added an extended version of tjDecompressHeader() to the TurboJPEG API,
-which allows the caller to determine the type of subsampling used in a JPEG
-image.
-
-[10] Added further protections against invalid Huffman codes.
-
-
-1.0.1
-=====
-
-[1] The Huffman decoder will now handle erroneous Huffman codes (for instance,
-from a corrupt JPEG image.)  Previously, these would cause libjpeg-turbo to
-crash under certain circumstances.
-
-[2] Fixed typo in SIMD dispatch routines that was causing 4:2:2 upsampling to
-be used instead of 4:2:0 when decompressing JPEG images using SSE2 code.
-
-[3] configure script will now automatically determine whether the
-INCOMPLETE_TYPES_BROKEN macro should be defined.
-
-
-1.0.0
-=====
-
-[1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify
---host when configuring on a 64-bit system)
-
-[2] Created symlinks in the Unix/Linux packages so that the TurboJPEG
-include file can always be found in /opt/libjpeg-turbo/include, the 32-bit
-static libraries can always be found in /opt/libjpeg-turbo/lib32, and the
-64-bit static libraries can always be found in /opt/libjpeg-turbo/lib64.
-
-[3] The Unix/Linux distribution packages now include the libjpeg run-time
-programs (cjpeg, etc.) and man pages.
-
-[4] Created a 32-bit supplementary package for amd64 Debian systems, which
-contains just the 32-bit libjpeg-turbo libraries.
-
-[5] Moved the libraries from */lib32 to */lib in the i386 Debian package.
-
-[6] Include distribution package for Cygwin
-
-[7] No longer necessary to specify --without-simd on non-x86 architectures, and
-unit tests now work on those architectures.
-
-
-0.0.93
-======
-
-[1] 2982659, Fixed x86-64 build on FreeBSD systems
-
-[2] 2988188: Added support for Windows 64-bit systems
-
-
-0.0.91
-======
-
-[1] Added documentation to .deb packages
-
-[2] 2968313: Fixed data corruption issues when decompressing large JPEG images
-and/or using buffered I/O with the libjpeg-turbo decompressor
-
-
-0.0.90
-======
-
-Initial release

LICENSE.md

@@ -0,0 +1,135 @@
+libjpeg-turbo Licenses
+======================
+
+libjpeg-turbo is covered by two 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,
+  including any code inherited from libjpeg and any modifications to that
+  code.  Note that the libjpeg-turbo SIMD source code bears the
+  [zlib License](https://opensource.org/licenses/Zlib), but in the context of
+  the overall libjpeg API library, the terms of the zlib License are subsumed
+  by the terms of the IJG License.
+
+- The Modified (3-clause) BSD License, which is listed below
+
+  This license applies to the TurboJPEG API library and associated programs, as
+  well as the build system.  Note that the TurboJPEG API library wraps the
+  libjpeg API library, so in the context of the overall TurboJPEG API library,
+  both the terms of the IJG License and the terms of the Modified (3-clause)
+  BSD License apply.
+
+
+Complying with the libjpeg-turbo Licenses
+=========================================
+
+This section provides a roll-up of the libjpeg-turbo licensing terms, to the
+best of our understanding.  This is not a license in and of itself.  It is
+intended solely for clarification.
+
+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)2009-2024 D. R. Commander.  All Rights Reserved.<br>
+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 Two 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.

LICENSE.txt

@@ -1,7 +0,0 @@
-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 mozjpeg 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.

Makefile.am

@@ -1,624 +0,0 @@
-lib_LTLIBRARIES = libjpeg.la
-libjpeg_la_LDFLAGS = -version-info ${LIBTOOL_CURRENT}:${SO_MINOR_VERSION}:${SO_AGE} -no-undefined
-include_HEADERS = jerror.h jmorecfg.h jpeglib.h
-
-if WITH_TURBOJPEG
-lib_LTLIBRARIES += libturbojpeg.la
-libturbojpeg_la_LDFLAGS = -version-info 1:0:1 -no-undefined
-include_HEADERS += turbojpeg.h
-endif
-
-nodist_include_HEADERS = jconfig.h
-
-
-HDRS = jchuff.h jcmaster.h jdct.h jdhuff.h jerror.h jinclude.h jmemsys.h \
-	jmorecfg.h jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h \
-	jpeg_nbits_table.h
-
-libjpeg_la_SOURCES = $(HDRS) jcapimin.c jcapistd.c jccoefct.c jccolor.c \
-	jcdctmgr.c jcext.c jchuff.c jcinit.c jcmainct.c jcmarker.c \
-	jcmaster.c jcomapi.c jcparam.c jcphuff.c jcprepct.c jcsample.c \
-	jctrans.c jdapimin.c jdapistd.c jdatadst.c jdatasrc.c jdcoefct.c \
-	jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c \
-	jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c \
-	jerror.c jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c \
-	jidctint.c jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c
-
-if WITH_ARITH
-libjpeg_la_SOURCES += jaricom.c
-endif
-
-if WITH_ARITH_ENC
-libjpeg_la_SOURCES += jcarith.c
-endif
-
-if WITH_ARITH_DEC
-libjpeg_la_SOURCES += jdarith.c
-endif
-
-
-SUBDIRS = java
-
-
-if WITH_TURBOJPEG
-
-libturbojpeg_la_SOURCES = $(libjpeg_la_SOURCES) turbojpeg.c turbojpeg.h \
-	transupp.c transupp.h jdatadst-tj.c jdatasrc-tj.c
-
-if WITH_JAVA
-
-libturbojpeg_la_SOURCES += turbojpeg-jni.c
-libturbojpeg_la_CFLAGS = ${JNI_CFLAGS}
-TJMAPFILE = turbojpeg-mapfile.jni
-
-else
-
-TJMAPFILE = turbojpeg-mapfile
-
-endif
-
-libturbojpeg_la_SOURCES += $(TJMAPFILE)
-
-if VERSION_SCRIPT
-libturbojpeg_la_LDFLAGS += $(VERSION_SCRIPT_FLAG)$(srcdir)/$(TJMAPFILE)
-endif
-
-endif
-
-
-if VERSION_SCRIPT
-libjpeg_la_LDFLAGS += $(VERSION_SCRIPT_FLAG)libjpeg.map
-endif
-
-
-if WITH_SIMD
-
-SUBDIRS += simd
-libjpeg_la_LIBADD = simd/libsimd.la
-libturbojpeg_la_LIBADD = simd/libsimd.la
-
-else
-
-libjpeg_la_SOURCES += jsimd_none.c
-
-endif
-
-
-bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom
-noinst_PROGRAMS = jcstest jpegyuv yuvjpeg
-
-
-if WITH_TURBOJPEG
-
-bin_PROGRAMS += tjbench
-
-noinst_PROGRAMS += tjunittest
-
-tjbench_SOURCES = tjbench.c bmp.h bmp.c tjutil.h tjutil.c rdbmp.c rdppm.c \
-	wrbmp.c wrppm.c
-
-tjbench_LDADD = libturbojpeg.la libjpeg.la -lm
-
-tjbench_CFLAGS = -DBMP_SUPPORTED -DPPM_SUPPORTED
-
-tjunittest_SOURCES = tjunittest.c tjutil.h tjutil.c
-
-tjunittest_LDADD = libturbojpeg.la
-
-endif
-
-
-cjpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c cjpeg.c rdgif.c rdppm.c rdswitch.c rdjpeg.c
-if WITH_12BIT
-else
-cjpeg_SOURCES += rdbmp.c rdtarga.c
-endif
-
-cjpeg_LDADD = libjpeg.la
-
-cjpeg_CFLAGS = -DGIF_SUPPORTED -DPPM_SUPPORTED
-if WITH_12BIT
-else
-cjpeg_CFLAGS += -DBMP_SUPPORTED -DTARGA_SUPPORTED
-endif
-
-if HAVE_LIBPNG
-cjpeg_CFLAGS += -DPNG_SUPPORTED $(libpng_CFLAGS)
-cjpeg_LDADD += $(libpng_LIBS)
-cjpeg_SOURCES += rdpng.c
-endif
-
-djpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c djpeg.c rdcolmap.c rdswitch.c \
-	wrgif.c wrppm.c
-if WITH_12BIT
-else
-djpeg_SOURCES += wrbmp.c wrtarga.c
-endif
-
-djpeg_LDADD = libjpeg.la
-
-djpeg_CFLAGS = -DGIF_SUPPORTED -DPPM_SUPPORTED
-if WITH_12BIT
-else
-djpeg_CFLAGS += -DBMP_SUPPORTED -DTARGA_SUPPORTED
-endif
-
-jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c transupp.h
-
-jpegtran_LDADD = libjpeg.la
-
-rdjpgcom_SOURCES = rdjpgcom.c
-
-rdjpgcom_LDADD = libjpeg.la
-
-wrjpgcom_SOURCES = wrjpgcom.c
-
-wrjpgcom_LDADD = libjpeg.la
-
-jcstest_SOURCES = jcstest.c
-
-jcstest_LDADD = libjpeg.la
-
-jpegyuv_SOURCES = jpegyuv.c
-
-jpegyuv_LDADD = libjpeg.la
-
-yuvjpeg_SOURCES = yuvjpeg.c
-
-yuvjpeg_LDADD = libjpeg.la
-
-dist_man1_MANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
-
-DOCS= coderules.txt jconfig.txt change.log rdrle.c wrrle.c BUILDING.txt \
-	ChangeLog.txt
-
-docdir = $(datadir)/doc
-dist_doc_DATA = README README-mozilla.txt README-turbo.txt libjpeg.txt structure.txt usage.txt \
-	wizard.txt
-
-exampledir = $(datadir)/doc
-dist_example_DATA = example.c
-
-
-EXTRA_DIST = win release $(DOCS) testimages CMakeLists.txt \
-	sharedlib/CMakeLists.txt cmakescripts libjpeg.map.in doc doxygen.config \
-	doxygen-extra.css jccolext.c jdcolext.c jdcol565.c jdmrgext.c jdmrg565.c \
-	jstdhuff.c
-
-dist-hook:
-	rm -rf `find $(distdir) -name .svn`
-
-
-SUBDIRS += md5
-
-if WITH_12BIT
-
-TESTORIG = testorig12.jpg
-MD5_JPEG_RGB_ISLOW = 9620f424569594bb9242b48498ad801f
-MD5_PPM_RGB_ISLOW = f3301d2219783b8b3d942b7239fa50c0
-MD5_JPEG_422_IFAST_OPT = 7322e3bd2f127f7de4b40d4480ce60e4
-MD5_PPM_422_IFAST = 79807fa552899e66a04708f533e16950
-MD5_PPM_422M_IFAST = 07737bfe8a7c1c87aaa393a0098d16b0
-MD5_JPEG_420_IFAST_Q100_PROG = a1da220b5604081863a504297ed59e55
-MD5_PPM_420_Q100_IFAST = 1b3730122709f53d007255e8dfd3305e
-MD5_PPM_420M_Q100_IFAST = 980a1a3c5bf9510022869d30b7d26566
-MD5_JPEG_GRAY_ISLOW = 235c90707b16e2e069f37c888b2636d9
-MD5_PPM_GRAY_ISLOW = 7213c10af507ad467da5578ca5ee1fca
-MD5_PPM_GRAY_ISLOW_RGB = e96ee81c30a6ed422d466338bd3de65d
-MD5_JPEG_420S_IFAST_OPT = 7af8e60be4d9c227ec63ac9b6630855e
-MD5_JPEG_3x2_FLOAT_PROG = a8c17daf77b457725ec929e215b603f8
-MD5_PPM_3x2_FLOAT = 42876ab9e5c2f76a87d08db5fbd57956
-MD5_PPM_420M_ISLOW_2_1 = 4ca6be2a6f326ff9eaab63e70a8259c0
-MD5_PPM_420M_ISLOW_15_8 = 12aa9f9534c1b3d7ba047322226365eb
-MD5_PPM_420M_ISLOW_13_8 = f7e22817c7b25e1393e4ec101e9d4e96
-MD5_PPM_420M_ISLOW_11_8 = 800a16f9f4dc9b293197bfe11be10a82
-MD5_PPM_420M_ISLOW_9_8 = 06b7a92a9bc69f4dc36ec40f1937d55c
-MD5_PPM_420M_ISLOW_7_8 = 3ec444a14a4ab4eab88ffc49c48eca43
-MD5_PPM_420M_ISLOW_3_4 = 3e726b7ea872445b19437d1c1d4f0d93
-MD5_PPM_420M_ISLOW_5_8 = a8a771abdc94301d20ffac119b2caccd
-MD5_PPM_420M_ISLOW_1_2 = b419124dd5568b085787234866102866
-MD5_PPM_420M_ISLOW_3_8 = 343d19015531b7bbe746124127244fa8
-MD5_PPM_420M_ISLOW_1_4 = 35fd59d866e44659edfa3c18db2a3edb
-MD5_PPM_420M_ISLOW_1_8 = ccaed48ac0aedefda5d4abe4013f4ad7
-MD5_JPEG_CROP = cdb35ff4b4519392690ea040c56ea99c
-
-else
-
-TESTORIG = testorig.jpg
-MD5_JPEG_RGB_ISLOW = 768e970dd57b340ff1b83c9d3d47c77b
-MD5_PPM_RGB_ISLOW = 00a257f5393fef8821f2b88ac7421291
-MD5_BMP_RGB_ISLOW_565 = f07d2e75073e4bb10f6c6f4d36e2e3be
-MD5_BMP_RGB_ISLOW_565D = 4cfa0928ef3e6bb626d7728c924cfda4
-MD5_JPEG_422_IFAST_OPT = 2540287b79d913f91665e660303ab2c8
-MD5_PPM_422_IFAST = 35bd6b3f833bad23de82acea847129fa
-MD5_PPM_422M_IFAST = 8dbc65323d62cca7c91ba02dd1cfa81d
-MD5_BMP_422M_IFAST_565 = 3294bd4d9a1f2b3d08ea6020d0db7065
-MD5_BMP_422M_IFAST_565D = da98c9c7b6039511be4a79a878a9abc1
-MD5_JPEG_420_IFAST_Q100_PROG = 990cbe0329c882420a2094da7e5adade
-MD5_PPM_420_Q100_IFAST = 5a732542015c278ff43635e473a8a294
-MD5_PPM_420M_Q100_IFAST = ff692ee9323a3b424894862557c092f1
-MD5_JPEG_GRAY_ISLOW = 72b51f894b8f4a10b3ee3066770aa38d
-MD5_PPM_GRAY_ISLOW = 8d3596c56eace32f205deccc229aa5ed
-MD5_PPM_GRAY_ISLOW_RGB = 116424ac07b79e5e801f00508eab48ec
-MD5_BMP_GRAY_ISLOW_565 = 12f78118e56a2f48b966f792fedf23cc
-MD5_BMP_GRAY_ISLOW_565D = bdbbd616441a24354c98553df5dc82db
-MD5_JPEG_420S_IFAST_OPT = 388708217ac46273ca33086b22827ed8
-# See README-turbo.txt for more details on why this next bit is necessary.
-if WITH_SSE_FLOAT_DCT
-MD5_JPEG_3x2_FLOAT_PROG = 343e3f8caf8af5986ebaf0bdc13b5c71
-MD5_PPM_3x2_FLOAT = 1a75f36e5904d6fc3a85a43da9ad89bb
-else
-MD5_JPEG_3x2_FLOAT_PROG = 9bca803d2042bd1eb03819e2bf92b3e5
-MD5_PPM_3x2_FLOAT = f6bfab038438ed8f5522fbd33595dcdc
-endif
-MD5_JPEG_420_ISLOW_ARI = e986fb0a637a8d833d96e8a6d6d84ea1
-MD5_JPEG_444_ISLOW_PROGARI = 0a8f1c8f66e113c3cf635df0a475a617
-MD5_PPM_420M_IFAST_ARI = 72b59a99bcf1de24c5b27d151bde2437
-MD5_JPEG_420_ISLOW = 9a68f56bc76e466aa7e52f415d0f4a5f
-MD5_PPM_420M_ISLOW_2_1 = 9f9de8c0612f8d06869b960b05abf9c9
-MD5_PPM_420M_ISLOW_15_8 = b6875bc070720b899566cc06459b63b7
-MD5_PPM_420M_ISLOW_13_8 = bc3452573c8152f6ae552939ee19f82f
-MD5_PPM_420M_ISLOW_11_8 = d8cc73c0aaacd4556569b59437ba00a5
-MD5_PPM_420M_ISLOW_9_8 = d25e61bc7eac0002f5b393aa223747b6
-MD5_PPM_420M_ISLOW_7_8 = ddb564b7c74a09494016d6cd7502a946
-MD5_PPM_420M_ISLOW_3_4 = 8ed8e68808c3fbc4ea764fc9d2968646
-MD5_PPM_420M_ISLOW_5_8 = a3363274999da2366a024efae6d16c9b
-MD5_PPM_420M_ISLOW_1_2 = e692a315cea26b988c8e8b29a5dbcd81
-MD5_PPM_420M_ISLOW_3_8 = 79eca9175652ced755155c90e785a996
-MD5_PPM_420M_ISLOW_1_4 = 79cd778f8bf1a117690052cacdd54eca
-MD5_PPM_420M_ISLOW_1_8 = 391b3d4aca640c8567d6f8745eb2142f
-MD5_BMP_420_ISLOW_256 = 4980185e3776e89bd931736e1cddeee6
-MD5_BMP_420_ISLOW_565 = bf9d13e16c4923b92e1faa604d7922cb
-MD5_BMP_420_ISLOW_565D = 6bde71526acc44bcff76f696df8638d2
-MD5_BMP_420M_ISLOW_565 = 8dc0185245353cfa32ad97027342216f
-MD5_BMP_420M_ISLOW_565D =d1be3a3339166255e76fa50a0d70d73e
-MD5_JPEG_CROP = b4197f377e621c4e9b1d20471432610d
-
-endif
-
-.PHONY: test
-test: tjquicktest bittest
-
-tjquicktest: testclean all
-
-if WITH_TURBOJPEG
-if WITH_JAVA
-	$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest
-	$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -bi
-	$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv
-	$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -noyuvpad
-	$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -bi
-	$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -bi -noyuvpad
-endif
-	./tjunittest
-	./tjunittest -alloc
-	./tjunittest -yuv
-	./tjunittest -yuv -alloc
-	./tjunittest -yuv -noyuvpad
-endif
-
-bittest: testclean all
-
-# These tests are carefully crafted to provide full coverage of as many of the
-# underlying algorithms as possible (including all of the SIMD-accelerated
-# ones.)
-
-# CC: null  SAMP: fullsize  FDCT: islow  ENT: huff
-	./cjpeg -revert -rgb -dct int -outfile testout_rgb_islow.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_RGB_ISLOW) testout_rgb_islow.jpg
-# CC: null  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -ppm -outfile testout_rgb_islow.ppm testout_rgb_islow.jpg
-	md5/md5cmp $(MD5_PPM_RGB_ISLOW) testout_rgb_islow.ppm
-	rm testout_rgb_islow.ppm
-if WITH_12BIT
-	rm testout_rgb_islow.jpg
-else
-# CC: RGB->RGB565  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb565 -dither none -bmp -outfile testout_rgb_islow_565.bmp testout_rgb_islow.jpg
-	md5/md5cmp $(MD5_BMP_RGB_ISLOW_565) testout_rgb_islow_565.bmp
-	rm testout_rgb_islow_565.bmp
-# CC: RGB->RGB565 (dithered)  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb565 -bmp -outfile testout_rgb_islow_565D.bmp testout_rgb_islow.jpg
-	md5/md5cmp $(MD5_BMP_RGB_ISLOW_565D) testout_rgb_islow_565D.bmp
-	rm testout_rgb_islow_565D.bmp testout_rgb_islow.jpg
-endif
-
-# CC: RGB->YCC  SAMP: fullsize/h2v1  FDCT: ifast  ENT: 2-pass huff
-	./cjpeg -revert -sample 2x1 -dct fast -opt -outfile testout_422_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_422_IFAST_OPT) testout_422_ifast_opt.jpg
-# CC: YCC->RGB  SAMP: fullsize/h2v1 fancy  IDCT: ifast  ENT: huff
-	./djpeg -dct fast -outfile testout_422_ifast.ppm testout_422_ifast_opt.jpg
-	md5/md5cmp $(MD5_PPM_422_IFAST) testout_422_ifast.ppm
-	rm testout_422_ifast.ppm
-# CC: YCC->RGB  SAMP: h2v1 merged  IDCT: ifast  ENT: huff
-	./djpeg -dct fast -nosmooth -outfile testout_422m_ifast.ppm testout_422_ifast_opt.jpg
-	md5/md5cmp $(MD5_PPM_422M_IFAST) testout_422m_ifast.ppm
-	rm testout_422m_ifast.ppm
-if WITH_12BIT
-	rm testout_422_ifast_opt.jpg
-else
-# CC: YCC->RGB565  SAMP: h2v1 merged  IDCT: ifast  ENT: huff
-	./djpeg -dct int -nosmooth -rgb565 -dither none -bmp -outfile testout_422m_ifast_565.bmp testout_422_ifast_opt.jpg
-	md5/md5cmp $(MD5_BMP_422M_IFAST_565) testout_422m_ifast_565.bmp
-	rm testout_422m_ifast_565.bmp
-# CC: YCC->RGB565 (dithered)  SAMP: h2v1 merged  IDCT: ifast  ENT: huff
-	./djpeg -dct int -nosmooth -rgb565 -bmp -outfile testout_422m_ifast_565D.bmp testout_422_ifast_opt.jpg
-	md5/md5cmp $(MD5_BMP_422M_IFAST_565D) testout_422m_ifast_565D.bmp
-	rm testout_422m_ifast_565D.bmp testout_422_ifast_opt.jpg
-endif
-
-# CC: RGB->YCC  SAMP: fullsize/h2v2  FDCT: ifast  ENT: prog huff
-	./cjpeg -revert -sample 2x2 -quality 100 -dct fast -prog -outfile testout_420_q100_ifast_prog.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_420_IFAST_Q100_PROG) testout_420_q100_ifast_prog.jpg
-# CC: YCC->RGB  SAMP: fullsize/h2v2 fancy  IDCT: ifast  ENT: prog huff
-	./djpeg -dct fast -outfile testout_420_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
-	md5/md5cmp $(MD5_PPM_420_Q100_IFAST) testout_420_q100_ifast.ppm
-	rm testout_420_q100_ifast.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: ifast  ENT: prog huff
-	./djpeg -dct fast -nosmooth -outfile testout_420m_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
-	md5/md5cmp $(MD5_PPM_420M_Q100_IFAST) testout_420m_q100_ifast.ppm
-	rm testout_420m_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
-
-# CC: RGB->Gray  SAMP: fullsize  FDCT: islow  ENT: huff
-	./cjpeg -revert -gray -dct int -outfile testout_gray_islow.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_GRAY_ISLOW) testout_gray_islow.jpg
-# CC: Gray->Gray  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -outfile testout_gray_islow.ppm testout_gray_islow.jpg
-	md5/md5cmp $(MD5_PPM_GRAY_ISLOW) testout_gray_islow.ppm
-	rm testout_gray_islow.ppm
-# CC: Gray->RGB  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb -outfile testout_gray_islow_rgb.ppm testout_gray_islow.jpg
-	md5/md5cmp $(MD5_PPM_GRAY_ISLOW_RGB) testout_gray_islow_rgb.ppm
-	rm testout_gray_islow_rgb.ppm
-if WITH_12BIT
-	rm testout_gray_islow.jpg
-else
-# CC: Gray->RGB565  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb565 -dither none -bmp -outfile testout_gray_islow_565.bmp testout_gray_islow.jpg
-	md5/md5cmp $(MD5_BMP_GRAY_ISLOW_565) testout_gray_islow_565.bmp
-	rm testout_gray_islow_565.bmp
-# CC: Gray->RGB565 (dithered)  SAMP: fullsize  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb565 -bmp -outfile testout_gray_islow_565D.bmp testout_gray_islow.jpg
-	md5/md5cmp $(MD5_BMP_GRAY_ISLOW_565D) testout_gray_islow_565D.bmp
-	rm testout_gray_islow_565D.bmp testout_gray_islow.jpg
-endif
-
-# CC: RGB->YCC  SAMP: fullsize smooth/h2v2 smooth  FDCT: islow
-# ENT: 2-pass huff
-	./cjpeg -revert -sample 2x2 -smooth 1 -dct int -opt -outfile testout_420s_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_420S_IFAST_OPT) testout_420s_ifast_opt.jpg
-	rm testout_420s_ifast_opt.jpg
-
-# CC: RGB->YCC  SAMP: fullsize/int  FDCT: float  ENT: prog huff
-	./cjpeg -revert -sample 3x2 -dct float -prog -outfile testout_3x2_float_prog.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_3x2_FLOAT_PROG) testout_3x2_float_prog.jpg
-# CC: YCC->RGB  SAMP: fullsize/int  IDCT: float  ENT: prog huff
-	./djpeg -dct float -outfile testout_3x2_float.ppm testout_3x2_float_prog.jpg
-	md5/md5cmp $(MD5_PPM_3x2_FLOAT) testout_3x2_float.ppm
-	rm testout_3x2_float.ppm testout_3x2_float_prog.jpg
-
-if WITH_ARITH_ENC
-# CC: YCC->RGB  SAMP: fullsize/h2v2  FDCT: islow  ENT: arith
-	./cjpeg -revert -dct int -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_420_ISLOW_ARI) testout_420_islow_ari.jpg
-	rm testout_420_islow_ari.jpg
-	./jpegtran -revert -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testimgint.jpg
-	md5/md5cmp $(MD5_JPEG_420_ISLOW_ARI) testout_420_islow_ari.jpg
-	rm testout_420_islow_ari.jpg
-# CC: YCC->RGB  SAMP: fullsize  FDCT: islow  ENT: prog arith
-	./cjpeg -revert -sample 1x1 -dct int -progressive -arithmetic -outfile testout_444_islow_progari.jpg $(srcdir)/testimages/testorig.ppm
-	md5/md5cmp $(MD5_JPEG_444_ISLOW_PROGARI) testout_444_islow_progari.jpg
-	rm testout_444_islow_progari.jpg
-endif
-if WITH_ARITH_DEC
-# CC: RGB->YCC  SAMP: h2v2 merged  IDCT: ifast  ENT: arith
-	./djpeg -fast -ppm -outfile testout_420m_ifast_ari.ppm $(srcdir)/testimages/testimgari.jpg
-	md5/md5cmp $(MD5_PPM_420M_IFAST_ARI) testout_420m_ifast_ari.ppm
-	rm testout_420m_ifast_ari.ppm
-	./jpegtran -revert -outfile testout_420_islow.jpg $(srcdir)/testimages/testimgari.jpg
-	md5/md5cmp $(MD5_JPEG_420_ISLOW) testout_420_islow.jpg
-	rm testout_420_islow.jpg
-endif
-
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 16x16 islow  ENT: huff
-	./djpeg -dct int -scale 2/1 -nosmooth -ppm -outfile testout_420m_islow_2_1.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_2_1) testout_420m_islow_2_1.ppm
-	rm testout_420m_islow_2_1.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 15x15 islow  ENT: huff
-	./djpeg -dct int -scale 15/8 -nosmooth -ppm -outfile testout_420m_islow_15_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_15_8) testout_420m_islow_15_8.ppm
-	rm testout_420m_islow_15_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 13x13 islow  ENT: huff
-	./djpeg -dct int -scale 13/8 -nosmooth -ppm -outfile testout_420m_islow_13_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_13_8) testout_420m_islow_13_8.ppm
-	rm testout_420m_islow_13_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 11x11 islow  ENT: huff
-	./djpeg -dct int -scale 11/8 -nosmooth -ppm -outfile testout_420m_islow_11_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_11_8) testout_420m_islow_11_8.ppm
-	rm testout_420m_islow_11_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 9x9 islow  ENT: huff
-	./djpeg -dct int -scale 9/8 -nosmooth -ppm -outfile testout_420m_islow_9_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_9_8) testout_420m_islow_9_8.ppm
-	rm testout_420m_islow_9_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 7x7 islow/14x14 islow  ENT: huff
-	./djpeg -dct int -scale 7/8 -nosmooth -ppm -outfile testout_420m_islow_7_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_7_8) testout_420m_islow_7_8.ppm
-	rm testout_420m_islow_7_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 6x6 islow/12x12 islow  ENT: huff
-	./djpeg -dct int -scale 3/4 -nosmooth -ppm -outfile testout_420m_islow_3_4.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_3_4) testout_420m_islow_3_4.ppm
-	rm testout_420m_islow_3_4.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 5x5 islow/10x10 islow  ENT: huff
-	./djpeg -dct int -scale 5/8 -nosmooth -ppm -outfile testout_420m_islow_5_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_5_8) testout_420m_islow_5_8.ppm
-	rm testout_420m_islow_5_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 4x4 islow/8x8 islow  ENT: huff
-	./djpeg -dct int -scale 1/2 -nosmooth -ppm -outfile testout_420m_islow_1_2.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_1_2) testout_420m_islow_1_2.ppm
-	rm testout_420m_islow_1_2.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 3x3 islow/6x6 islow  ENT: huff
-	./djpeg -dct int -scale 3/8 -nosmooth -ppm -outfile testout_420m_islow_3_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_3_8) testout_420m_islow_3_8.ppm
-	rm testout_420m_islow_3_8.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 2x2 islow/4x4 islow  ENT: huff
-	./djpeg -dct int -scale 1/4 -nosmooth -ppm -outfile testout_420m_islow_1_4.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_1_4) testout_420m_islow_1_4.ppm
-	rm testout_420m_islow_1_4.ppm
-# CC: YCC->RGB  SAMP: h2v2 merged  IDCT: 1x1 islow/2x2 islow  ENT: huff
-	./djpeg -dct int -scale 1/8 -nosmooth -ppm -outfile testout_420m_islow_1_8.ppm $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_PPM_420M_ISLOW_1_8) testout_420m_islow_1_8.ppm
-	rm testout_420m_islow_1_8.ppm
-if WITH_12BIT
-else
-# CC: YCC->RGB (dithered)  SAMP: h2v2 fancy  IDCT: islow  ENT: huff
-	./djpeg -dct int -colors 256 -bmp -outfile testout_420_islow_256.bmp $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_BMP_420_ISLOW_256) testout_420_islow_256.bmp
-	rm testout_420_islow_256.bmp
-# CC: YCC->RGB565  SAMP: h2v2 fancy  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb565 -dither none -bmp -outfile testout_420_islow_565.bmp $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_BMP_420_ISLOW_565) testout_420_islow_565.bmp
-	rm testout_420_islow_565.bmp
-# CC: YCC->RGB565 (dithered)  SAMP: h2v2 fancy  IDCT: islow  ENT: huff
-	./djpeg -dct int -rgb565 -bmp -outfile testout_420_islow_565D.bmp $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_BMP_420_ISLOW_565D) testout_420_islow_565D.bmp
-	rm testout_420_islow_565D.bmp
-# CC: YCC->RGB565  SAMP: h2v2 merged  IDCT: islow  ENT: huff
-	./djpeg -dct int -nosmooth -rgb565 -dither none -bmp -outfile testout_420m_islow_565.bmp $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_BMP_420M_ISLOW_565) testout_420m_islow_565.bmp
-	rm testout_420m_islow_565.bmp
-# CC: YCC->RGB565 (dithered)  SAMP: h2v2 merged  IDCT: islow  ENT: huff
-	./djpeg -dct int -nosmooth -rgb565 -bmp -outfile testout_420m_islow_565D.bmp $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_BMP_420M_ISLOW_565D) testout_420m_islow_565D.bmp
-	rm testout_420m_islow_565D.bmp
-endif
-
-	./jpegtran -revert -crop 120x90+20+50 -transpose -perfect -outfile testout_crop.jpg $(srcdir)/testimages/$(TESTORIG)
-	md5/md5cmp $(MD5_JPEG_CROP) testout_crop.jpg
-	rm testout_crop.jpg
-
-
-testclean:
-	rm -f testout*
-	rm -f *_GRAY_*.bmp
-	rm -f *_GRAY_*.png
-	rm -f *_GRAY_*.ppm
-	rm -f *_GRAY_*.jpg
-	rm -f *_GRAY.yuv
-	rm -f *_420_*.bmp
-	rm -f *_420_*.png
-	rm -f *_420_*.ppm
-	rm -f *_420_*.jpg
-	rm -f *_420.yuv
-	rm -f *_422_*.bmp
-	rm -f *_422_*.png
-	rm -f *_422_*.ppm
-	rm -f *_422_*.jpg
-	rm -f *_422.yuv
-	rm -f *_444_*.bmp
-	rm -f *_444_*.png
-	rm -f *_444_*.ppm
-	rm -f *_444_*.jpg
-	rm -f *_444.yuv
-	rm -f *_440_*.bmp
-	rm -f *_440_*.png
-	rm -f *_440_*.ppm
-	rm -f *_440_*.jpg
-	rm -f *_440.yuv
-	rm -f *_411_*.bmp
-	rm -f *_411_*.png
-	rm -f *_411_*.ppm
-	rm -f *_411_*.jpg
-	rm -f *_411.yuv
-
-
-tjtest:
-	sh ./tjbenchtest
-	sh ./tjbenchtest -alloc
-	sh ./tjbenchtest -yuv
-	sh ./tjbenchtest -yuv -alloc
-if WITH_JAVA
-	sh ./tjbenchtest.java
-	sh ./tjbenchtest.java -yuv
-endif
-
-
-pkgscripts/mozjpeg.spec: pkgscripts/mozjpeg.spec.tmpl
-	cat pkgscripts/mozjpeg.spec.tmpl | sed s@%{__prefix}@$(prefix)@g | \
-		sed s@%{__bindir}@$(bindir)@g | sed s@%{__datadir}@$(datadir)@g | \
-		sed s@%{__docdir}@$(docdir)@g | sed s@%{__includedir}@$(includedir)@g | \
-		sed s@%{__libdir}@$(libdir)@g | sed s@%{__mandir}@$(mandir)@g \
-		> pkgscripts/mozjpeg.spec
-
-rpm: all pkgscripts/mozjpeg.spec
-	TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
-	mkdir -p $$TMPDIR/RPMS; \
-	ln -fs `pwd` $$TMPDIR/BUILD; \
-	rm -f ${PKGNAME}-${VERSION}.${RPMARCH}.rpm; \
-	rpmbuild -bb --define "_blddir $$TMPDIR/buildroot"  \
-		--define "_topdir $$TMPDIR" \
-		--target ${RPMARCH} pkgscripts/mozjpeg.spec; \
-	cp $$TMPDIR/RPMS/${RPMARCH}/${PKGNAME}-${VERSION}-${BUILD}.${RPMARCH}.rpm \
-		${PKGNAME}-${VERSION}.${RPMARCH}.rpm; \
-	rm -rf $$TMPDIR
-
-srpm: dist-gzip pkgscripts/mozjpeg.spec
-	TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
-	mkdir -p $$TMPDIR/RPMS; \
-	mkdir -p $$TMPDIR/SRPMS; \
-	mkdir -p $$TMPDIR/BUILD; \
-	mkdir -p $$TMPDIR/SOURCES; \
-	mkdir -p $$TMPDIR/SPECS; \
-	rm -f ${PKGNAME}-${VERSION}.src.rpm; \
-	cp ${PACKAGE_NAME}-${VERSION}.tar.gz $$TMPDIR/SOURCES; \
-	cat pkgscripts/mozjpeg.spec | sed s/%{_blddir}/%{_tmppath}/g \
-		| sed s/#--\>//g \
-		> $$TMPDIR/SPECS/mozjpeg.spec; \
-	rpmbuild -bs --define "_topdir $$TMPDIR" $$TMPDIR/SPECS/mozjpeg.spec; \
-	cp $$TMPDIR/SRPMS/${PKGNAME}-${VERSION}-${BUILD}.src.rpm \
-		${PKGNAME}-${VERSION}.src.rpm; \
-	rm -rf $$TMPDIR
-
-pkgscripts/makedpkg: pkgscripts/makedpkg.tmpl
-	cat pkgscripts/makedpkg.tmpl | sed s@%{__prefix}@$(prefix)@g | \
-		sed s@%{__docdir}@$(docdir)@g | sed s@%{__libdir}@$(libdir)@g \
-		> pkgscripts/makedpkg
-
-deb: all pkgscripts/makedpkg
-	sh pkgscripts/makedpkg
-
-pkgscripts/uninstall: pkgscripts/uninstall.tmpl
-	cat pkgscripts/uninstall.tmpl | sed s@%{__prefix}@$(prefix)@g | \
-		sed s@%{__bindir}@$(bindir)@g | sed s@%{__datadir}@$(datadir)@g | \
-		sed s@%{__includedir}@$(includedir)@g | sed s@%{__libdir}@$(libdir)@g | \
-		sed s@%{__mandir}@$(mandir)@g > pkgscripts/uninstall
-
-pkgscripts/makemacpkg: pkgscripts/makemacpkg.tmpl
-	cat pkgscripts/makemacpkg.tmpl | sed s@%{__prefix}@$(prefix)@g | \
-		sed s@%{__bindir}@$(bindir)@g | sed s@%{__docdir}@$(docdir)@g | \
-		sed s@%{__libdir}@$(libdir)@g > pkgscripts/makemacpkg
-
-if X86_64
-
-udmg: all pkgscripts/makemacpkg pkgscripts/uninstall
-	sh pkgscripts/makemacpkg -build32 ${BUILDDIR32}
-
-iosdmg: all pkgscripts/makemacpkg pkgscripts/uninstall
-	sh pkgscripts/makemacpkg -build32 ${BUILDDIR32} -buildarmv6 ${BUILDDIRARMV6} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
-
-else
-
-iosdmg: all pkgscripts/makemacpkg pkgscripts/uninstall
-	sh pkgscripts/makemacpkg -buildarmv6 ${BUILDDIRARMV6} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
-
-endif
-
-dmg: all pkgscripts/makemacpkg pkgscripts/uninstall
-	sh pkgscripts/makemacpkg
-
-pkgscripts/makecygwinpkg: pkgscripts/makecygwinpkg.tmpl
-	cat pkgscripts/makecygwinpkg.tmpl | sed s@%{__prefix}@$(prefix)@g | \
-		sed s@%{__docdir}@$(docdir)@g | sed s@%{__libdir}@$(libdir)@g \
-		> pkgscripts/makecygwinpkg
-
-cygwinpkg: all pkgscripts/makecygwinpkg
-	sh pkgscripts/makecygwinpkg

README-mozilla.txt

@@ -24,7 +24,7 @@ mozjpeg's implementation of the libjpeg API includes an extensibility framework
 that allows new features to be added without modifying the transparent libjpeg
 compress/decompress structures (which would break backward ABI compatibility.)
 Extension parameters are placed into the opaque jpeg_comp_master structure, and
-a set of accessor functions and globally unique tokens allows for 
+a set of accessor functions and globally unique tokens allows for
 getting/setting those parameters without directly accessing the structure.
 
 Currently, only the accessor functions necessary to support the mozjpeg
@@ -185,7 +185,7 @@ Integer Extension Parameters Supported by mozjpeg
   8 = Table from:  An Improved Detection Model for DCT Coefficient Quantization
       (1993) Peterson, Ahumada and Watson
 
-* JINT_DC_SCAN_OPT_MODE (default: 1)
+* JINT_DC_SCAN_OPT_MODE (default: 0)
   Specifies the DC scan optimization mode.  The following options are
   available:
   0 = One scan for all components

README-turbo.txt

@@ -1,14 +1,14 @@
-*******************************************************************************
-**     Background
-*******************************************************************************
+Background
+==========
 
-libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
-NEON) to accelerate baseline JPEG compression and decompression on x86, x86-64,
-and ARM systems.  On such systems, libjpeg-turbo is generally 2-4x 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 is a JPEG image codec that uses SIMD instructions to accelerate
+baseline JPEG compression and decompression on x86, x86-64, Arm, PowerPC, and
+MIPS systems, as well as progressive JPEG compression on x86, x86-64, and Arm
+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
@@ -21,87 +21,91 @@ 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.
+broader range of users and developers.  libjpeg-turbo is an ISO/IEC and ITU-T
+reference implementation of the JPEG standard.
+
+More information about libjpeg-turbo can be found at
+<https://libjpeg-turbo.org>.
 
 
-*******************************************************************************
-**     License
-*******************************************************************************
+Funding
+=======
 
-Most of libjpeg-turbo inherits the non-restrictive, BSD-style license used by
-libjpeg (see README.)  The TurboJPEG wrapper (both C and Java versions) and
-associated test programs bear a similar license, which is reproduced below:
+libjpeg-turbo is an independent open source project, but we rely on patronage
+and funded development in order to maintain that independence.  The easiest way
+to ensure that libjpeg-turbo remains community-focused and free of any one
+organization's agenda is to
+[sponsor our project through GitHub](https://github.com/sponsors/libjpeg-turbo).
+All sponsorship money goes directly toward funding the labor necessary to
+maintain libjpeg-turbo, support the user community, and implement bug fixes and
+strategically important features.
 
-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.
+[![Sponsor libjpeg-turbo](https://img.shields.io/github/sponsors/libjpeg-turbo?label=Sponsor&logo=GitHub)](https://github.com/sponsors/libjpeg-turbo)
 
 
-*******************************************************************************
-**     Using libjpeg-turbo
-*******************************************************************************
+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:  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.
+- **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
+  <https://libjpeg-turbo.org/Documentation/Documentation> for API
+  documentation.
 
-  libjpeg API:  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.)
+- **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 */
+    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
+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.
@@ -109,7 +113,7 @@ 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
+    #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.
@@ -119,21 +123,22 @@ 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.
+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
+    #ifdef JCS_ALPHA_EXTENSIONS
 
-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.
+[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
@@ -150,214 +155,218 @@ 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 --with-jpeg7 or --with-jpeg8 to configure, or 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.
+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:
----------------------------------------
+### Support for libjpeg v7 and v8 Features
 
-Fully supported:
+#### Fully supported
 
--- libjpeg: IDCT scaling extensions in decompressor
-   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 API: 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 API: Arithmetic coding**
 
--- libjpeg: In-memory source and destination managers
-   See notes below.
+- **libjpeg API: In-memory source and destination managers**<br>
+  See notes below.
 
--- cjpeg: Separate quality settings for luminance and chrominance
-   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: 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: 32-bit BMP support**
 
--- cjpeg: -rgb option
+- **cjpeg: `-rgb` option**
 
--- jpegtran: lossless cropping
+- **jpegtran: Lossless cropping**
 
--- jpegtran: -perfect option
+- **jpegtran: `-perfect` option**
 
--- jpegtran: forcing width/height when performing lossless crop
+- **jpegtran: Forcing width/height when performing lossless crop**
 
--- rdjpgcom: -raw option
+- **rdjpgcom: `-raw` option**
 
--- rdjpgcom: locale awareness
+- **rdjpgcom: Locale awareness**
 
 
-Not supported:
+#### 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,
+means of quality improvement.  Readers are invited to peruse the research at
+<https://libjpeg-turbo.org/About/SmartScale> and draw their 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
-   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 API: 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
-   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 API: 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
-   cinfo.do_fancy_downsampling is silently ignored.
-   This requires the DCT scaling feature, which is not supported.
+- **libjpeg API: Fancy downsampling in compressor**<br>
+  `cinfo.do_fancy_downsampling` is silently ignored.
+  This requires the DCT scaling feature, which is not supported.
 
--- jpegtran: Scaling
-   This requires both the DCT scaling and SmartScale features, which are not
-   supported.
+- **jpegtran: Scaling**<br>
+  This requires both the DCT scaling and SmartScale features, which are not
+  supported.
 
--- Lossless RGB JPEG files
-   This requires the SmartScale feature, which is not supported.
+- **Lossless RGB JPEG files**<br>
+  This requires the SmartScale feature, which is not supported.
 
-What About libjpeg v9?
-----------------------
+### 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
+(`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.  Further, 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.
+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.  Thus, at this time, it is our belief that
-there is not sufficient technical justification for software to upgrade from
-libjpeg v8 to libjpeg v9, and therefore, not sufficient technical justification
-for us to emulate the libjpeg v9 ABI.
+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.
+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
+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 --without-mem-srcdst to configure or
-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 62.0.0 to 62.1.0 if using libjpeg v6b API/ABI
-emulation and from 7.0.0 to 7.1.0 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.
+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
-*******************************************************************************
+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:
+v6b.  There are two exceptions:
 
--- 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.)
--- When not using the SIMD extensions, then the accuracy of the floating point
-   DCT/IDCT can depend on the compiler and compiler settings.
+1. When decompressing a JPEG image that uses 4:4:0 chrominance subsampling, the
+outputs of libjpeg v6b and libjpeg-turbo can differ because libjpeg-turbo
+implements a "fancy" (smooth) 4:4:0 upsampling algorithm and libjpeg did not.
 
-While libjpeg-turbo does emulate the libjpeg v8 API/ABI, under the hood, it is
+2. When using the floating point DCT/IDCT, 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 accurate integer
+      IDCT.  The floating point DCT/IDCT algorithms are mainly a legacy
+      feature, and they do not produce significantly more accuracy than the
+      accurate 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 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 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.
+- 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
-*******************************************************************************
+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
+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
+It is therefore strongly advised that you use the accurate 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.

README.ijg

@@ -1,7 +1,7 @@
 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-turbo.txt for
+README.  It is included only for reference.  Please see README.md for
 information specific to libjpeg-turbo.
 
 
@@ -68,17 +68,17 @@ 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.)
+JPEG is normally 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
-processes, although some uncommon parameter settings aren't implemented yet.
-We have made no provision for supporting the hierarchical or lossless
+This software implements JPEG baseline, extended-sequential, progressive, and
+lossless compression processes.  Provision is made for supporting all variants
+of these processes, although some uncommon parameter settings aren't
+implemented yet.  We have made no provision for supporting the hierarchical
 processes defined in the standard.
 
 We provide a set of library routines for reading and writing JPEG image files,
@@ -89,9 +89,9 @@ The library is intended to be reused in other applications.
 In order to support file conversion and viewing software, we have included
 considerable functionality beyond the bare JPEG coding/decoding capability;
 for example, the color quantization modules are not strictly part of JPEG
-decoding, but they are essential for output to colormapped file formats or
-colormapped displays.  These extra functions can be compiled out of the
-library if not required for a particular application.
+decoding, but they are essential for output to colormapped file formats.  These
+extra functions can be compiled out of the library if not required for a
+particular application.
 
 We have also included "jpegtran", a utility for lossless transcoding between
 different JPEG processes, and "rdjpgcom" and "wrjpgcom", two simple
@@ -128,7 +128,7 @@ 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) 1991-2012, Thomas G. Lane, Guido Vollbeding.
+This software is copyright (C) 1991-2020, Thomas G. Lane, Guido Vollbeding.
 All Rights Reserved except as specified below.
 
 Permission is hereby granted to use, copy, modify, and distribute this
@@ -159,25 +159,6 @@ 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, GIF reading support has
-been removed altogether, and the GIF writer has been simplified 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
 ==========
 
@@ -185,12 +166,12 @@ 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",
-	Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
+        Wallace, Gregory K.  "The JPEG Still Picture Compression Standard",
+        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 PostScript file containing a revised version of Wallace's article is
-available at http://www.ijg.org/files/wallace.ps.gz.  The file (actually
+handy, a PDF file containing a revised version of Wallace's article is
+available at http://www.ijg.org/files/Wallace.JPEG.pdf.  The file (actually
 a preprint for an article that appeared in IEEE Trans. Consumer Electronics)
 omits the sample images that appeared in CACM, but it includes corrections
 and some added material.  Note: the Wallace article is copyright ACM and IEEE,
@@ -220,21 +201,21 @@ Continuous-tone Still Images, Part 2: Compliance testing" and has document
 numbers ISO/IEC IS 10918-2, ITU-T T.83.
 
 The JPEG standard does not specify all details of an interchangeable file
-format.  For the omitted details we follow the "JFIF" conventions, revision
-1.02.  JFIF 1.02 has been adopted as an Ecma International Technical Report
-and thus received a formal publication status.  It is available as a free
-download in PDF format from
-http://www.ecma-international.org/publications/techreports/E-TR-098.htm.
-A PostScript version of the JFIF document is available at
-http://www.ijg.org/files/jfif.ps.gz.  There is also a plain text version at
-http://www.ijg.org/files/jfif.txt.gz, but it is missing the figures.
+format.  For the omitted details, we follow the "JFIF" conventions, revision
+1.02.  JFIF version 1 has been adopted as ISO/IEC 10918-5 (05/2013) and
+Recommendation ITU-T T.871 (05/2011): Information technology - Digital
+compression and coding of continuous-tone still images: JPEG File Interchange
+Format (JFIF).  It is available as a free download in PDF file format from
+https://www.iso.org/standard/54989.html and http://www.itu.int/rec/T-REC-T.871.
+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
-ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz.  The JPEG incorporation scheme
-found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems.
-IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6).
-Instead, we recommend the JPEG design proposed by TIFF Technical Note #2
-(Compression tag 7).  Copies of this Note can be obtained from
+The TIFF 6.0 file format specification can be obtained from
+http://mirrors.ctan.org/graphics/tiff/TIFF6.ps.gz.  The JPEG incorporation
+scheme found in the TIFF 6.0 spec of 3-June-92 has a number of serious
+problems.  IJG does not recommend use of the TIFF 6.0 design (TIFF Compression
+tag 6).  Instead, we recommend the JPEG design proposed by TIFF Technical Note
+#2 (Compression tag 7).  Copies of this Note can be obtained from
 http://www.ijg.org/files/.  It is expected that the next revision
 of the TIFF spec will replace the 6.0 JPEG design with the Note's design.
 Although IJG's own code does not support TIFF/JPEG, the free libtiff library
@@ -246,33 +227,29 @@ 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".  This particular version will be archived as
-http://www.ijg.org/files/jpegsrc.v8d.tar.gz, and in Windows-compatible
-"zip" archive format as http://www.ijg.org/files/jpegsr8d.zip.
+directory "files".
 
 The JPEG FAQ (Frequently Asked Questions) article is a source of some
-general information about JPEG.
-It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/
-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/part2
+general information about JPEG.  It is available at
+http://www.faqs.org/faqs/jpeg-faq.
 
 
-FILE FORMAT WARS
-================
+FILE FORMAT COMPATIBILITY
+=========================
 
-The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together
-with ITU-T SG16) currently promotes different formats containing the name
-"JPEG" which are incompatible with original DCT-based JPEG.  IJG therefore does
-not support these formats (see REFERENCES).  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.)
+This software implements ITU T.81 | ISO/IEC 10918 with some extensions from
+ITU T.871 | ISO/IEC 10918-5 (JPEG File Interchange Format-- see REFERENCES).
+Informally, the term "JPEG image" or "JPEG file" most often refers to JFIF or
+a subset thereof, but there are other formats containing the name "JPEG" that
+are incompatible with the original 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
+modified by TIFF Technical Note #2) can be used for "high end" applications
+that need to record a lot of additional data about an image.
 
 
 TO DO

README.md

@@ -1,15 +1,29 @@
-Mozilla JPEG Encoder Project
+Mozilla JPEG Encoder Project [![Build Status](https://ci.appveyor.com/api/projects/status/github/mozilla/mozjpeg?branch=master&svg=true)](https://ci.appveyor.com/project/kornel/mozjpeg-4ekrx)
 ============================
 
-This project's goal is to reduce the size of JPEG files without reducing quality or compatibility with the vast majority of the world's deployed decoders.
+MozJPEG improves JPEG compression efficiency achieving higher visual quality and smaller file sizes at the same time. It is compatible with the JPEG standard, and the vast majority of the world's deployed JPEG decoders.
 
-The idea is to reduce transfer times for JPEGs on the Web, thus reducing page load times.
+MozJPEG is a patch for [libjpeg-turbo](https://github.com/libjpeg-turbo/libjpeg-turbo). **Please send pull requests to libjpeg-turbo** if the changes aren't specific to newly-added MozJPEG-only compression code. This project aims to keep differences with libjpeg-turbo minimal, so whenever possible, improvements and bug fixes should go there first.
 
-'mozjpeg' is not intended to be a general JPEG library replacement. It makes tradeoffs that are intended to benefit Web use cases and focuses solely on improving encoding. It is best used as part of a Web encoding workflow. For a general JPEG library (e.g. your system libjpeg), especially if you care about decoding, we recommend libjpeg-turbo.
+MozJPEG is compatible with the libjpeg API and ABI. It is intended to be a drop-in replacement for libjpeg. MozJPEG is a strict superset of libjpeg-turbo's functionality. All MozJPEG's improvements can be disabled at run time, and in that case it behaves exactly like libjpeg-turbo.
 
-More information:
+MozJPEG is meant to be used as a library in graphics programs and image processing tools. We include a demo `cjpeg` command-line tool, but it's not intended for serious use. We encourage authors of graphics programs to use libjpeg's [C API](libjpeg.txt) and link with MozJPEG library instead.
 
-* [Mailing List](https://lists.mozilla.org/listinfo/dev-mozjpeg)</a>
-* [Version 3.0 Announcement](https://boomswaggerboom.wordpress.com/2014/12/30/mozjpeg-3-0-released/)
+## Features
+
+* Progressive encoding with "jpegrescan" optimization. It can be applied to any JPEG file (with `jpegtran`) to losslessly reduce file size.
+* Trellis quantization. When converting other formats to JPEG it maximizes quality/filesize ratio.
+* Comes with new quantization table presets, e.g. tuned for high-resolution displays.
+* Fully compatible with all web browsers.
+* Can be seamlessly integrated into any program that uses the industry-standard libjpeg API. There's no need to write any MozJPEG-specific integration code.
+
+## Releases
+
+* [Latest release](https://github.com/mozilla/mozjpeg/releases/latest)
+* [Overview of 3.0 features](https://calendar.perfplanet.com/2014/mozjpeg-3-0/)
 * [Version 2.0 Announcement](https://blog.mozilla.org/research/2014/07/15/mozilla-advances-jpeg-encoding-with-mozjpeg-2-0/)
 * [Version 1.0 Announcement](https://blog.mozilla.org/research/2014/03/05/introducing-the-mozjpeg-project/)
+
+## Compiling
+
+See [BUILDING](BUILDING.md). MozJPEG is built exactly the same way as libjpeg-turbo, so if you need additional help please consult [libjpeg-turbo documentation](https://libjpeg-turbo.org/).

acinclude.m4

@@ -1,247 +0,0 @@
-# AC_PROG_NASM
-# --------------------------
-# Check that NASM exists and determine flags
-AC_DEFUN([AC_PROG_NASM],[
-
-AC_CHECK_PROGS(NASM, [nasm nasmw yasm])
-test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found])
-
-AC_MSG_CHECKING([for object file format of host system])
-case "$host_os" in
-  cygwin* | mingw* | pw32* | interix*)
-    case "$host_cpu" in
-      x86_64)
-        objfmt='Win64-COFF'
-        ;;
-      *)
-        objfmt='Win32-COFF'
-        ;;
-    esac
-  ;;
-  msdosdjgpp* | go32*)
-    objfmt='COFF'
-  ;;
-  os2-emx*)			# not tested
-    objfmt='MSOMF'		# obj
-  ;;
-  linux*coff* | linux*oldld*)
-    objfmt='COFF'		# ???
-  ;;
-  linux*aout*)
-    objfmt='a.out'
-  ;;
-  linux*)
-    case "$host_cpu" in
-      x86_64)
-        objfmt='ELF64'
-        ;;
-      *)
-        objfmt='ELF'
-        ;;
-    esac
-  ;;
-  kfreebsd* | freebsd* | netbsd* | openbsd*)
-    if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then
-      objfmt='BSD-a.out'
-    else
-      case "$host_cpu" in
-        x86_64 | amd64)
-          objfmt='ELF64'
-          ;;
-        *)
-          objfmt='ELF'
-          ;;
-      esac
-    fi
-  ;;
-  solaris* | sunos* | sysv* | sco*)
-    case "$host_cpu" in
-      x86_64)
-        objfmt='ELF64'
-        ;;
-      *)
-        objfmt='ELF'
-        ;;
-    esac
-  ;;
-  darwin* | rhapsody* | nextstep* | openstep* | macos*)
-    case "$host_cpu" in
-      x86_64)
-        objfmt='Mach-O64'
-        ;;
-      *)
-        objfmt='Mach-O'
-        ;;
-    esac
-  ;;
-  *)
-    objfmt='ELF ?'
-  ;;
-esac
-
-AC_MSG_RESULT([$objfmt])
-if test "$objfmt" = 'ELF ?'; then
-  objfmt='ELF'
-  AC_MSG_WARN([unexpected host system. assumed that the format is $objfmt.])
-fi
-
-AC_MSG_CHECKING([for object file format specifier (NAFLAGS) ])
-case "$objfmt" in
-  MSOMF)      NAFLAGS='-fobj -DOBJ32';;
-  Win32-COFF) NAFLAGS='-fwin32 -DWIN32';;
-  Win64-COFF) NAFLAGS='-fwin64 -DWIN64 -D__x86_64__';;
-  COFF)       NAFLAGS='-fcoff -DCOFF';;
-  a.out)      NAFLAGS='-faout -DAOUT';;
-  BSD-a.out)  NAFLAGS='-faoutb -DAOUT';;
-  ELF)        NAFLAGS='-felf -DELF';;
-  ELF64)      NAFLAGS='-felf64 -DELF -D__x86_64__';;
-  RDF)        NAFLAGS='-frdf -DRDF';;
-  Mach-O)     NAFLAGS='-fmacho -DMACHO';;
-  Mach-O64)   NAFLAGS='-fmacho64 -DMACHO -D__x86_64__';;
-esac
-AC_MSG_RESULT([$NAFLAGS])
-AC_SUBST([NAFLAGS])
-
-AC_MSG_CHECKING([whether the assembler ($NASM $NAFLAGS) works])
-cat > conftest.asm <<EOF
-[%line __oline__ "configure"
-        section .text
-        global  _main,main
-_main:
-main:   xor     eax,eax
-        ret
-]EOF
-try_nasm='$NASM $NAFLAGS -o conftest.o conftest.asm'
-if AC_TRY_EVAL(try_nasm) && test -s conftest.o; then
-  AC_MSG_RESULT(yes)
-else
-  echo "configure: failed program was:" >&AC_FD_CC
-  cat conftest.asm >&AC_FD_CC
-  rm -rf conftest*
-  AC_MSG_RESULT(no)
-  AC_MSG_ERROR([installation or configuration problem: assembler cannot create object files.])
-fi
-
-AC_MSG_CHECKING([whether the linker accepts assembler output])
-try_nasm='${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.o $LIBS 1>&AC_FD_CC'
-if AC_TRY_EVAL(try_nasm) && test -s conftest${ac_exeext}; then
-  rm -rf conftest*
-  AC_MSG_RESULT(yes)
-else
-  rm -rf conftest*
-  AC_MSG_RESULT(no)
-  AC_MSG_ERROR([configuration problem: maybe object file format mismatch.])
-fi
-
-])
-
-# AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE
-# --------------------------
-# Test whether the assembler is suitable and supports NEON instructions
-AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[
-  ac_good_gnu_arm_assembler=no
-  ac_save_CC="$CC"
-  ac_save_CFLAGS="$CFLAGS"
-  CFLAGS="$CCASFLAGS -x assembler-with-cpp"
-  CC="$CCAS"
-  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-    .text
-    .fpu neon
-    .arch armv7a
-    .object_arch armv4
-    .arm
-    pld [r0]
-    vmovn.u16 d0, q0]])], ac_good_gnu_arm_assembler=yes)
-
-  ac_use_gas_preprocessor=no
-  if test "x$ac_good_gnu_arm_assembler" = "xno" ; then
-    CC="gas-preprocessor.pl $CCAS"
-    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-      .text
-      .fpu neon
-      .arch armv7a
-      .object_arch armv4
-      .arm
-      pld [r0]
-      vmovn.u16 d0, q0]])], ac_use_gas_preprocessor=yes)
-  fi
-  CFLAGS="$ac_save_CFLAGS"
-  CC="$ac_save_CC"
-
-  if test "x$ac_use_gas_preprocessor" = "xyes" ; then
-    CCAS="gas-preprocessor.pl $CCAS"
-    AC_SUBST([CCAS])
-    ac_good_gnu_arm_assembler=yes
-  fi
-
-  if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then
-    $1
-  else
-    $2
-  fi
-])
-
-# AC_CHECK_COMPATIBLE_MIPSEL_ASSEMBLER_IFELSE
-# --------------------------
-# Test whether the assembler is suitable and supports MIPS instructions
-AC_DEFUN([AC_CHECK_COMPATIBLE_MIPS_ASSEMBLER_IFELSE],[
-  have_mips_dspr2=no
-  ac_save_CFLAGS="$CFLAGS"
-  CFLAGS="$CCASFLAGS -mdspr2"
-
-  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-
-  int main ()
-  {
-    int c = 0, a = 0, b = 0;
-    __asm__ __volatile__ (
-        "precr.qb.ph %[c], %[a], %[b]          \n\t"
-        : [c] "=r" (c)
-        : [a] "r" (a), [b] "r" (b)
-    );
-    return c;
-  }
-  ]])], have_mips_dspr2=yes)
-  CFLAGS=$ac_save_CFLAGS
-
-  if test "x$have_mips_dspr2" = "xyes" ; then
-    $1
-  else
-    $2
-  fi
-])
-
-AC_DEFUN([AC_CHECK_COMPATIBLE_ARM64_ASSEMBLER_IFELSE],[
-  ac_good_gnu_arm_assembler=no
-  ac_save_CC="$CC"
-  ac_save_CFLAGS="$CFLAGS"
-  CFLAGS="$CCASFLAGS -x assembler-with-cpp"
-  CC="$CCAS"
-  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-    .text
-    .arch armv8-a+fp+simd
-    movi v0.16b, #100]])], ac_good_gnu_arm_assembler=yes)
-
-  ac_use_gas_preprocessor=no
-  if test "x$ac_good_gnu_arm_assembler" = "xno" ; then
-    CC="gas-preprocessor.pl $CCAS"
-    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
-      .text
-      .arch armv8-a+fp+simd
-      movi v0.16b, #100]])], ac_use_gas_preprocessor=yes)
-  fi
-  CFLAGS="$ac_save_CFLAGS"
-  CC="$ac_save_CC"
-
-  if test "x$ac_use_gas_preprocessor" = "xyes" ; then
-    CCAS="gas-preprocessor.pl $CCAS"
-    AC_SUBST([CCAS])
-    ac_good_gnu_arm_assembler=yes
-  fi
-
-  if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then
-    $1
-  else
-    $2
-  fi
-])

appveyor.yml

@@ -0,0 +1,62 @@
+image: Visual Studio 2019
+configuration: Release
+platform:
+  - Win32
+  - x64
+
+install:
+  - if %PLATFORM% == Win32 (set ARCH=x86)
+  - if %PLATFORM% == x64 (set ARCH=x64)
+  ## Set up nasm
+  - choco install nasm
+  - set PATH=%PATH%;C:\Program Files\NASM
+  ## Set up libpng
+  - cd C:\Tools\vcpkg
+  - vcpkg install libpng:%ARCH%-windows
+  - vcpkg install libpng:%ARCH%-windows-static
+
+before_build:
+  - cd %APPVEYOR_BUILD_FOLDER%
+  - nasm -v
+  - cmake --version
+  - git describe --always --tags --dirty
+  - FOR /F %%a in ('git describe --always --tags --dirty') do set GIT_VERSION=%%a
+
+build_script:
+  ## Build shared
+  - cmake -B shared -A %PLATFORM%
+          -DENABLE_SHARED=1 -DENABLE_STATIC=0
+          -DREQUIRE_SIMD=1
+          -DCMAKE_TOOLCHAIN_FILE=C:/tools/vcpkg/scripts/buildsystems/vcpkg.cmake
+
+  - cmake --build shared --config Release
+
+  ## Build static
+  - cmake -B static -A %PLATFORM%
+          -DENABLE_SHARED=0 -DENABLE_STATIC=1
+          -DREQUIRE_SIMD=1
+          -DCMAKE_TOOLCHAIN_FILE=C:/tools/vcpkg/scripts/buildsystems/vcpkg.cmake
+          -DVCPKG_TARGET_TRIPLET=%ARCH%-windows-static
+
+  - cmake --build static --config Release
+
+after_build:
+  - 7z a mozjpeg-%GIT_VERSION%-win-%ARCH%.zip shared/Release static/Release
+
+artifacts:
+  - path: '*.zip'
+
+cache:
+  - C:\ProgramData\chocolatey\bin
+  - C:\ProgramData\chocolatey\lib
+  - C:\Program Files\NASM
+  - C:\tools\vcpkg\installed
+
+deploy:
+  description: 'Automated build using Appveyor'
+  provider: GitHub
+  auth_token:
+    secure: 2Jj47Q5HnaPob9U4yX2t4q4TYTw4JWU6cS56mM12aoRLgfYkZ4gRZPySIzfmTPqC
+  artifact: /.*\.zip/
+  on:
+    APPVEYOR_REPO_TAG: true        # deploy on tag push only

bmp.c

@@ -1,274 +0,0 @@
-/*
- * Copyright (C)2011 D. R. Commander.  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.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <setjmp.h>
-#include <errno.h>
-#include "cdjpeg.h"
-#include <jpeglib.h>
-#include <jpegint.h>
-#include "tjutil.h"
-#include "bmp.h"
-
-
-/* This duplicates the functionality of the VirtualGL bitmap library using
-   the components from cjpeg and djpeg */
-
-
-/* Error handling (based on example in example.c) */
-
-static char errStr[JMSG_LENGTH_MAX]="No error";
-
-struct my_error_mgr
-{
-	struct jpeg_error_mgr pub;
-	jmp_buf setjmp_buffer;
-};
-typedef struct my_error_mgr *my_error_ptr;
-
-static void my_error_exit(j_common_ptr cinfo)
-{
-	my_error_ptr myerr=(my_error_ptr)cinfo->err;
-	(*cinfo->err->output_message)(cinfo);
-	longjmp(myerr->setjmp_buffer, 1);
-}
-
-/* Based on output_message() in jerror.c */
-
-static void my_output_message(j_common_ptr cinfo)
-{
-	(*cinfo->err->format_message)(cinfo, errStr);
-}
-
-#define _throw(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s", m);  \
-	retval=-1;  goto bailout;}
-#define _throwunix(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s\n%s", m,  \
-	strerror(errno));  retval=-1;  goto bailout;}
-
-
-static void pixelconvert(unsigned char *srcbuf, int srcpf, int srcbottomup,
-	unsigned char *dstbuf, int dstpf, int dstbottomup, int w, int h)
-{
-	unsigned char *srcptr=srcbuf, *srcptr2;
-	int srcps=tjPixelSize[srcpf];
-	int srcstride=srcbottomup? -w*srcps:w*srcps;
-	unsigned char *dstptr=dstbuf, *dstptr2;
-	int dstps=tjPixelSize[dstpf];
-	int dststride=dstbottomup? -w*dstps:w*dstps;
-	int row, col;
-
-	if(srcbottomup) srcptr=&srcbuf[w*srcps*(h-1)];
-	if(dstbottomup) dstptr=&dstbuf[w*dstps*(h-1)];
-	for(row=0; row<h; row++, srcptr+=srcstride, dstptr+=dststride)
-	{
-		for(col=0, srcptr2=srcptr, dstptr2=dstptr; col<w; col++, srcptr2+=srcps,
-			dstptr2+=dstps)
-		{
-			dstptr2[tjRedOffset[dstpf]]=srcptr2[tjRedOffset[srcpf]];
-			dstptr2[tjGreenOffset[dstpf]]=srcptr2[tjGreenOffset[srcpf]];
-			dstptr2[tjBlueOffset[dstpf]]=srcptr2[tjBlueOffset[srcpf]];
-		}
-	}
-}
-
-
-int loadbmp(char *filename, unsigned char **buf, int *w, int *h,
-	int dstpf, int bottomup)
-{
-	int retval=0, dstps, srcpf, tempc;
-	struct jpeg_compress_struct cinfo;
-	struct my_error_mgr jerr;
-	cjpeg_source_ptr src;
-	FILE *file=NULL;
-
-	memset(&cinfo, 0, sizeof(struct jpeg_compress_struct));
-
-	if(!filename || !buf || !w || !h || dstpf<0 || dstpf>=TJ_NUMPF)
-		_throw("loadbmp(): Invalid argument");
-
-	if((file=fopen(filename, "rb"))==NULL)
-		_throwunix("loadbmp(): Cannot open input file");
-
-	cinfo.err=jpeg_std_error(&jerr.pub);
-	jerr.pub.error_exit=my_error_exit;
-	jerr.pub.output_message=my_output_message;
-
-	if(setjmp(jerr.setjmp_buffer))
-	{
-		/* If we get here, the JPEG code has signaled an error. */
-		retval=-1;  goto bailout;
-	}
-
-	jpeg_create_compress(&cinfo);
-	if((tempc=getc(file))<0 || ungetc(tempc, file)==EOF)
-		_throwunix("loadbmp(): Could not read input file")
-	else if(tempc==EOF) _throw("loadbmp(): Input file contains no data");
-
-	if(tempc=='B')
-	{
-		if((src=jinit_read_bmp(&cinfo))==NULL)
-			_throw("loadbmp(): Could not initialize bitmap loader");
-	}
-	else if(tempc=='P')
-	{
-		if((src=jinit_read_ppm(&cinfo))==NULL)
-			_throw("loadbmp(): Could not initialize bitmap loader");
-	}
-	else _throw("loadbmp(): Unsupported file type");
-
-	src->input_file=file;
-	(*src->start_input)(&cinfo, src);
-	(*cinfo.mem->realize_virt_arrays)((j_common_ptr)&cinfo);
-
-	*w=cinfo.image_width;  *h=cinfo.image_height;
-
-	if(cinfo.input_components==1 && cinfo.in_color_space==JCS_RGB)
-		srcpf=TJPF_GRAY;
-	else srcpf=TJPF_RGB;
-
-	dstps=tjPixelSize[dstpf];
-	if((*buf=(unsigned char *)malloc((*w)*(*h)*dstps))==NULL)
-		_throw("loadbmp(): Memory allocation failure");
-
-	while(cinfo.next_scanline<cinfo.image_height)
-	{
-		int i, nlines=(*src->get_pixel_rows)(&cinfo, src);
-		for(i=0; i<nlines; i++)
-		{
-			unsigned char *outbuf;  int row;
-			row=cinfo.next_scanline+i;
-			if(bottomup) outbuf=&(*buf)[((*h)-row-1)*(*w)*dstps];
-			else outbuf=&(*buf)[row*(*w)*dstps];
-			pixelconvert(src->buffer[i], srcpf, 0, outbuf, dstpf, bottomup, *w,
-				nlines);
-		}
-		cinfo.next_scanline+=nlines;
-	}
-
-	(*src->finish_input)(&cinfo, src);
-
-	bailout:
-	jpeg_destroy_compress(&cinfo);
-	if(file) fclose(file);
-	if(retval<0 && buf && *buf) {free(*buf);  *buf=NULL;}
-	return retval;
-}
-
-
-int savebmp(char *filename, unsigned char *buf, int w, int h, int srcpf,
-	int bottomup)
-{
-	int retval=0, srcps, dstpf;
-	struct jpeg_decompress_struct dinfo;
-	struct my_error_mgr jerr;
-	djpeg_dest_ptr dst;
-	FILE *file=NULL;
-	char *ptr=NULL;
-
-	memset(&dinfo, 0, sizeof(struct jpeg_decompress_struct));
-
-	if(!filename || !buf || w<1 || h<1 || srcpf<0 || srcpf>=TJ_NUMPF)
-		_throw("savebmp(): Invalid argument");
-
-	if((file=fopen(filename, "wb"))==NULL)
-		_throwunix("savebmp(): Cannot open output file");
-
-	dinfo.err=jpeg_std_error(&jerr.pub);
-	jerr.pub.error_exit=my_error_exit;
-	jerr.pub.output_message=my_output_message;
-
-	if(setjmp(jerr.setjmp_buffer))
-	{
-		/* If we get here, the JPEG code has signaled an error. */
-		retval=-1;  goto bailout;
-	}
-
-	jpeg_create_decompress(&dinfo);
-	if(srcpf==TJPF_GRAY)
-	{
-		dinfo.out_color_components=dinfo.output_components=1;
-		dinfo.out_color_space=JCS_GRAYSCALE;
-	}
-	else
-	{
-		dinfo.out_color_components=dinfo.output_components=3;
-		dinfo.out_color_space=JCS_RGB;
-	}
-	dinfo.image_width=w;  dinfo.image_height=h;
-	dinfo.global_state=DSTATE_READY;
-	dinfo.scale_num=dinfo.scale_denom=1;
-
-	ptr=strrchr(filename, '.');
-	if(ptr && !strcasecmp(ptr, ".bmp"))
-	{
-		if((dst=jinit_write_bmp(&dinfo, 0))==NULL)
-			_throw("savebmp(): Could not initialize bitmap writer");
-	}
-	else
-	{
-		if((dst=jinit_write_ppm(&dinfo))==NULL)
-			_throw("savebmp(): Could not initialize PPM writer");
-	}
-
-	dst->output_file=file;
-	(*dst->start_output)(&dinfo, dst);
-	(*dinfo.mem->realize_virt_arrays)((j_common_ptr)&dinfo);
-
-	if(srcpf==TJPF_GRAY) dstpf=srcpf;
-	else dstpf=TJPF_RGB;
-	srcps=tjPixelSize[srcpf];
-
-	while(dinfo.output_scanline<dinfo.output_height)
-	{
-		int i, nlines=dst->buffer_height;
-		for(i=0; i<nlines; i++)
-		{
-			unsigned char *inbuf;  int row;
-			row=dinfo.output_scanline+i;
-			if(bottomup) inbuf=&buf[(h-row-1)*w*srcps];
-			else inbuf=&buf[row*w*srcps];
-			pixelconvert(inbuf, srcpf, bottomup, dst->buffer[i], dstpf, 0, w,
-				nlines);
-		}
-		(*dst->put_pixel_rows)(&dinfo, dst, nlines);
-		dinfo.output_scanline+=nlines;
-	}
-
-	(*dst->finish_output)(&dinfo, dst);
-
-	bailout:
-	jpeg_destroy_decompress(&dinfo);
-	if(file) fclose(file);
-	return retval;
-}
-
-const char *bmpgeterr(void)
-{
-	return errStr;
-}

cderror.h

@@ -1,10 +1,13 @@
 /*
  * cderror.h
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1997, Thomas G. Lane.
- * Modified 2009 by Guido Vollbeding.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
+ * Modified 2009-2017 by Guido Vollbeding.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2021, 2024, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * 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
@@ -25,7 +28,7 @@
 #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 */
 
@@ -33,31 +36,30 @@
 
 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(JTRC_BMP, "%ux%u 24-bit BMP image")
+JMESSAGE(JERR_BMP_OUTOFRANGE, "Numeric value out of range in BMP file")
+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 */
 
-#ifdef GIF_SUPPORTED
 JMESSAGE(JERR_GIF_BUG, "GIF output got confused")
 JMESSAGE(JERR_GIF_CODESIZE, "Bogus GIF codesize %d")
 JMESSAGE(JERR_GIF_COLORSPACE, "GIF output must be grayscale or RGB")
+JMESSAGE(JERR_GIF_EMPTY, "Empty GIF image")
 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")
@@ -69,62 +71,40 @@ JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file")
 JMESSAGE(JWRN_GIF_CHAR, "Bogus char 0x%02x in GIF file, ignoring")
 JMESSAGE(JWRN_GIF_ENDCODE, "Premature end of GIF image")
 JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits")
-#endif /* GIF_SUPPORTED */
 
-#ifdef PPM_SUPPORTED
 JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB")
 JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file")
-JMESSAGE(JERR_PPM_TOOLARGE, "Integer value too large in PPM file")
 JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file")
-JMESSAGE(JTRC_PGM, "%ux%u PGM image")
-JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image")
-JMESSAGE(JTRC_PPM, "%ux%u PPM image")
-JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image")
-#endif /* PPM_SUPPORTED */
+JMESSAGE(JERR_PPM_OUTOFRANGE, "Numeric value out of range in PPM file")
+JMESSAGE(JTRC_PGM, "%ux%u PGM image (maximum color value = %u)")
+JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image (maximum color value = %u)")
+JMESSAGE(JTRC_PPM, "%ux%u PPM image (maximum color value = %u)")
+JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image (maximum color value = %u)")
 
-#ifdef RLE_SUPPORTED
-JMESSAGE(JERR_RLE_BADERROR, "Bogus error code from RLE library")
-JMESSAGE(JERR_RLE_COLORSPACE, "RLE output must be grayscale or RGB")
-JMESSAGE(JERR_RLE_DIMENSIONS, "Image dimensions (%ux%u) too large for RLE")
-JMESSAGE(JERR_RLE_EMPTY, "Empty RLE file")
-JMESSAGE(JERR_RLE_EOF, "Premature EOF in RLE header")
-JMESSAGE(JERR_RLE_MEM, "Insufficient memory for RLE header")
-JMESSAGE(JERR_RLE_NOT, "Not an RLE file")
-JMESSAGE(JERR_RLE_TOOMANYCHANNELS, "Cannot handle %d output channels for RLE")
-JMESSAGE(JERR_RLE_UNSUPPORTED, "Cannot handle this RLE setup")
-JMESSAGE(JTRC_RLE, "%ux%u full-color RLE file")
-JMESSAGE(JTRC_RLE_FULLMAP, "%ux%u full-color RLE file with map of length %d")
-JMESSAGE(JTRC_RLE_GRAY, "%ux%u grayscale RLE file")
-JMESSAGE(JTRC_RLE_MAPGRAY, "%ux%u grayscale RLE file with map of length %d")
-JMESSAGE(JTRC_RLE_MAPPED, "%ux%u colormapped RLE file with map of length %d")
-#endif /* RLE_SUPPORTED */
-
-#ifdef TARGA_SUPPORTED
 JMESSAGE(JERR_TGA_BADCMAP, "Unsupported Targa colormap format")
 JMESSAGE(JERR_TGA_BADPARMS, "Invalid or unsupported Targa file")
 JMESSAGE(JERR_TGA_COLORSPACE, "Targa output must be grayscale or RGB")
 JMESSAGE(JTRC_TGA, "%ux%u RGB Targa image")
 JMESSAGE(JTRC_TGA_GRAY, "%ux%u grayscale Targa image")
 JMESSAGE(JTRC_TGA_MAPPED, "%ux%u colormapped Targa image")
-#else
 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")
 JMESSAGE(JERR_TOO_MANY_COLORS,
          "Output file format cannot handle %d colormap entries")
 JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed")
-#ifdef TARGA_SUPPORTED
+#ifdef PNG_SUPPORTED
 JMESSAGE(JERR_UNKNOWN_FORMAT,
-         "Unrecognized input file format --- perhaps you need -targa")
+         "MozJPEG can't read the image (JPEG, PNG and old BMP and Targa are supported)")
 #else
-JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format")
+JMESSAGE(JERR_UNKNOWN_FORMAT, "MozJPEG can't read the image (PNG support is disabled in this build)")
 #endif
 JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format")
 
 #ifdef PNG_SUPPORTED
 JMESSAGE(JERR_PNG_ERROR, "Unable to read PNG file: %s")
+JMESSAGE(JERR_PNG_PROFILETOOLARGE, "Embedded profile was too large for this tool - dropped.")
 #endif
 
 #ifdef JMAKE_ENUM_LIST

cdjpeg.c

@@ -3,9 +3,10 @@
  *
  * 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
- * to libjpeg-turbo.
- * For conditions of distribution and use, see the accompanying README file.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2019, 2022, D. R. Commander.
+ * 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).
@@ -24,37 +25,51 @@
  * Optional progress monitor: display a percent-done figure on stderr.
  */
 
-#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;
-  int total_passes = prog->pub.total_passes + prog->total_extra_passes;
-  int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
+  cd_progress_ptr prog = (cd_progress_ptr)cinfo->progress;
 
-  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,
-              total_passes, percent_done);
-    } else {
-      fprintf(stderr, "\r %3d%% ", percent_done);
+  if (prog->max_scans != 0 && cinfo->is_decompressor) {
+    int scan_no = ((j_decompress_ptr)cinfo)->input_scan_number;
+
+    if (scan_no > (int)prog->max_scans) {
+      fprintf(stderr, "Scan number %d exceeds maximum scans (%u)\n", scan_no,
+              prog->max_scans);
+      exit(EXIT_FAILURE);
+    }
+  }
+
+  if (prog->report) {
+    int total_passes = prog->pub.total_passes + prog->total_extra_passes;
+    int percent_done =
+      (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,
+                total_passes, percent_done);
+      } else {
+        fprintf(stderr, "\r %3d%% ", percent_done);
+      }
+      fflush(stderr);
     }
-    fflush(stderr);
   }
 }
 
 
 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) {
     progress->pub.progress_monitor = progress_monitor;
     progress->completed_extra_passes = 0;
     progress->total_extra_passes = 0;
+    progress->max_scans = 0;
+    progress->report = FALSE;
     progress->percent_done = -1;
     cinfo->progress = &progress->pub;
   }
@@ -62,7 +77,7 @@ 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) {
@@ -71,8 +86,6 @@ end_progress_monitor (j_common_ptr cinfo)
   }
 }
 
-#endif
-
 
 /*
  * Case-insensitive matching of possibly-abbreviated keyword switches.
@@ -81,7 +94,7 @@ 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;
@@ -108,9 +121,9 @@ 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? */
   setmode(fileno(stdin), O_BINARY);
@@ -126,9 +139,9 @@ 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? */
   setmode(fileno(stdout), O_BINARY);

cdjpeg.h

@@ -3,11 +3,12 @@
  *
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1997, Thomas G. Lane.
- * It was modified by The libjpeg-turbo Project to include only code relevant
- * to libjpeg-turbo.
- * mozjpeg Modifications:
+ * Modified 2019 by Guido Vollbeding.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2017, 2019, 2021-2022, D. R. Commander.
  * Copyright (C) 2014, Mozilla Corporation.
- * 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.
@@ -26,7 +27,7 @@
  * 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);
@@ -36,8 +37,12 @@ struct cjpeg_source_struct {
   FILE *input_file;
 
   JSAMPARRAY buffer;
+  J12SAMPARRAY buffer12;
+#ifdef C_LOSSLESS_SUPPORTED
+  J16SAMPARRAY buffer16;
+#endif
   JDIMENSION buffer_height;
-  
+  JDIMENSION max_pixels;
 #if JPEG_RAW_READER
   // For reading JPEG
   JSAMPARRAY plane_pointer[4];
@@ -51,7 +56,7 @@ 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.
@@ -63,15 +68,27 @@ struct djpeg_dest_struct {
                           JDIMENSION rows_supplied);
   /* Finish up at the end of the image. */
   void (*finish_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
+  /* Re-calculate buffer dimensions based on output dimensions (for use with
+     partial image decompression.)  If this is NULL, then the output format
+     does not support partial image decompression (BMP, in particular, cannot
+     support partial decompression because it uses 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;
    * height is buffer_height.
    */
   JSAMPARRAY buffer;
+  J12SAMPARRAY buffer12;
+#ifdef D_LOSSLESS_SUPPORTED
+  J16SAMPARRAY buffer16;
+#endif
   JDIMENSION buffer_height;
 };
 
@@ -88,52 +105,68 @@ struct cdjpeg_progress_mgr {
   struct jpeg_progress_mgr pub; /* fields known to JPEG library */
   int completed_extra_passes;   /* extra passes completed */
   int total_extra_passes;       /* total extra */
+  JDIMENSION max_scans;         /* abort if the number of scans exceeds this
+                                   value and the value is non-zero */
+  boolean report;               /* whether or not to report progress */
   /* 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;
 
 
 /* Module selection routines for I/O modules. */
 
-EXTERN(cjpeg_source_ptr) jinit_read_bmp (j_compress_ptr cinfo);
-EXTERN(djpeg_dest_ptr) jinit_write_bmp (j_decompress_ptr cinfo,
-                                        boolean is_os2);
-EXTERN(cjpeg_source_ptr) jinit_read_gif (j_compress_ptr cinfo);
-EXTERN(djpeg_dest_ptr) jinit_write_gif (j_decompress_ptr cinfo);
 EXTERN(cjpeg_source_ptr) jinit_read_jpeg (j_compress_ptr cinfo);
-EXTERN(cjpeg_source_ptr) jinit_read_ppm (j_compress_ptr cinfo);
 EXTERN(cjpeg_source_ptr) jinit_read_png (j_compress_ptr cinfo);
-EXTERN(djpeg_dest_ptr) jinit_write_ppm (j_decompress_ptr cinfo);
-EXTERN(cjpeg_source_ptr) jinit_read_rle (j_compress_ptr cinfo);
-EXTERN(djpeg_dest_ptr) jinit_write_rle (j_decompress_ptr cinfo);
-EXTERN(cjpeg_source_ptr) jinit_read_targa (j_compress_ptr cinfo);
-EXTERN(djpeg_dest_ptr) jinit_write_targa (j_decompress_ptr cinfo);
+EXTERN(cjpeg_source_ptr) jinit_read_bmp(j_compress_ptr cinfo,
+                                        boolean use_inversion_array);
+EXTERN(djpeg_dest_ptr) jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2,
+                                       boolean use_inversion_array);
+EXTERN(cjpeg_source_ptr) jinit_read_gif(j_compress_ptr cinfo);
+EXTERN(cjpeg_source_ptr) j12init_read_gif(j_compress_ptr cinfo);
+#ifdef C_LOSSLESS_SUPPORTED
+EXTERN(cjpeg_source_ptr) j16init_read_gif(j_compress_ptr cinfo);
+#endif
+EXTERN(djpeg_dest_ptr) jinit_write_gif(j_decompress_ptr cinfo, boolean is_lzw);
+EXTERN(djpeg_dest_ptr) j12init_write_gif(j_decompress_ptr cinfo,
+                                         boolean is_lzw);
+EXTERN(cjpeg_source_ptr) jinit_read_ppm(j_compress_ptr cinfo);
+EXTERN(cjpeg_source_ptr) j12init_read_ppm(j_compress_ptr cinfo);
+#ifdef C_LOSSLESS_SUPPORTED
+EXTERN(cjpeg_source_ptr) j16init_read_ppm(j_compress_ptr cinfo);
+#endif
+EXTERN(djpeg_dest_ptr) jinit_write_ppm(j_decompress_ptr cinfo);
+EXTERN(djpeg_dest_ptr) j12init_write_ppm(j_decompress_ptr cinfo);
+#ifdef D_LOSSLESS_SUPPORTED
+EXTERN(djpeg_dest_ptr) j16init_write_ppm(j_decompress_ptr cinfo);
+#endif
+EXTERN(cjpeg_source_ptr) jinit_read_targa(j_compress_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,
-                                   boolean force_baseline);
-EXTERN(boolean) read_scan_script (j_compress_ptr cinfo, char * filename);
-EXTERN(boolean) set_quality_ratings (j_compress_ptr cinfo, char *arg,
-                                     boolean force_baseline);
-EXTERN(boolean) set_quant_slots (j_compress_ptr cinfo, char *arg);
-EXTERN(boolean) set_sample_factors (j_compress_ptr cinfo, char *arg);
+EXTERN(boolean) read_quant_tables(j_compress_ptr cinfo, char *filename,
+                                  boolean force_baseline);
+EXTERN(boolean) read_scan_script(j_compress_ptr cinfo, char *filename);
+EXTERN(boolean) set_quality_ratings(j_compress_ptr cinfo, char *arg,
+                                    boolean force_baseline);
+EXTERN(boolean) set_quant_slots(j_compress_ptr cinfo, char *arg);
+EXTERN(boolean) set_sample_factors(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(j_decompress_ptr cinfo, FILE *infile);
+EXTERN(void) read_color_map_12(j_decompress_ptr cinfo, FILE *infile);
 
 /* common support routines (in cdjpeg.c) */
 
-EXTERN(void) enable_signal_catcher (j_common_ptr cinfo);
-EXTERN(void) start_progress_monitor (j_common_ptr cinfo,
-                                     cd_progress_ptr progress);
-EXTERN(void) end_progress_monitor (j_common_ptr cinfo);
-EXTERN(boolean) keymatch (char * arg, const char * keyword, int minchars);
-EXTERN(FILE *) read_stdin (void);
-EXTERN(FILE *) write_stdout (void);
+EXTERN(void) start_progress_monitor(j_common_ptr cinfo,
+                                    cd_progress_ptr progress);
+EXTERN(void) end_progress_monitor(j_common_ptr cinfo);
+EXTERN(boolean) keymatch(char *arg, const char *keyword, int minchars);
+EXTERN(FILE *) read_stdin(void);
+EXTERN(FILE *) write_stdout(void);
 
 /* miscellaneous useful macros */
 

change.log

@@ -1,9 +1,54 @@
-NOTE:  This file was modified by The libjpeg-turbo Project to include only
-information relevant to libjpeg-turbo.
+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 9d  12-Jan-2020
+-----------------------
+
+Restore GIF read and write support from libjpeg version 6a.
+Thank to Wolfgang Werner (W.W.) Heinz for suggestion.
+
+Add jpegtran -drop option; add options to the crop extension and wipe
+to fill the extra area with content from the source image region,
+instead of gray out.
+
+
+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.
+
+
+Version 9b  17-Jan-2016
+-----------------------
+
+Document 'f' specifier for jpegtran -crop specification.
+Thank to Michele Martone for suggestion.
+
+
+Version 9a  19-Jan-2014
+-----------------------
+
+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 remark for jpeg_mem_dest() in jdatadst.c.
+Thank to Elie-Gregoire Khoury for the hint.
+
+Correct argument type in format string, avoid compiler warnings.
+Thank to Vincent Torri for hint.
+
+
 Version 8d  15-Jan-2012
 -----------------------
 
@@ -119,11 +164,6 @@ Huffman tables being used.
 
 Huffman tables are checked for validity much more carefully than before.
 
-To avoid the Unisys LZW patent, djpeg's GIF output capability has been
-changed to produce "uncompressed GIFs", and cjpeg's GIF input capability
-has been removed altogether.  We're not happy about it either, but there
-seems to be no good alternative.
-
 The configure script now supports building libjpeg as a shared library
 on many flavors of Unix (all the ones that GNU libtool knows how to
 build shared libraries for).  Use "./configure --enable-shared" to

cjpeg.1

@@ -1,4 +1,4 @@
-.TH CJPEG 1 "21 November 2014"
+.TH CJPEG 1 "30 August 2024"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS
@@ -16,8 +16,8 @@ cjpeg \- compress an image file to a JPEG file
 compresses the named image file, or the standard input if no file is
 named, and produces a JPEG/JFIF file on the standard output.
 The currently supported input file formats are: PPM (PBMPLUS color
-format), PGM (PBMPLUS grayscale format), BMP, Targa, and RLE (Utah Raster
-Toolkit format).  (RLE is supported only if the URT library is available.)
+format), PGM (PBMPLUS grayscale format), BMP, GIF [legacy feature], and Targa
+[legacy feature].
 .SH OPTIONS
 All switch names may be abbreviated; for example,
 .B \-grayscale
@@ -30,7 +30,7 @@ Upper and lower case are equivalent (thus
 .B \-BMP
 is the same as
 .BR \-bmp ).
-British spellings are also accepted (e.g.,
+British spellings are also accepted (e.g.
 .BR \-greyscale ),
 though for brevity these are not mentioned below.
 .PP
@@ -41,17 +41,12 @@ Scale quantization tables to adjust image quality.  Quality is 0 (worst) to
 100 (best); default is 75.  (See below for more info.)
 .TP
 .B \-grayscale
-Create monochrome JPEG file from color input.  Be sure to use this switch when
-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 ,
+Create monochrome JPEG file from color input.  By specifying
+.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
+Create RGB JPEG file.  Using this switch suppresses the conversion from RGB
 colorspace input to the default YCbCr JPEG colorspace.
 .TP
 .B \-optimize
@@ -65,18 +60,22 @@ decompression are unaffected by
 .BR \-optimize .
 .TP
 .B \-progressive
-Create progressive JPEG file (see below).
+Create progressive JPEG file (see below).  Implies
+.B \-optimize
+unless
+.B \-arithmetic
+is also specified.
 .TP
 .B \-targa
-Input file is Targa format.  Targa files that contain an "identification"
-field will not be automatically recognized by
-.BR cjpeg ;
-for such files you must specify
+Input file is Targa format [legacy feature].  Targa files that contain an
+"identification" field will not be automatically recognized by
+.BR cjpeg .
+For such files, you must specify
 .B \-targa
 to make
 .B cjpeg
-treat the input as Targa format.
-For most Targa files, you won't need this switch.
+treat the input as Targa format.  For most Targa files, you won't need this
+switch.
 .PP
 The
 .B \-quality
@@ -85,8 +84,8 @@ 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 be between 50 and 95; the default of 75 is
-often about right.  If you see defects at
+purpose the quality setting should generally be between 50 and 95 (the default
+is 75) for photographic images.  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.)
@@ -94,11 +93,10 @@ 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).  This setting is mainly of interest for experimental
-purposes.  Quality values above about 95 are
-.B not
-recommended for normal use; the compressed file size goes up dramatically for
-hardly any gain in output image quality.
+as roundoff error.)  For most images, specifying a quality value above
+about 95 will increase the size of the compressed file dramatically, and while
+the quality gain from these higher quality values is measurable (using metrics
+such as PSNR or SSIM), it is rarely perceivable by human vision.
 .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
@@ -155,42 +153,135 @@ about the same --- often a little smaller.
 .PP
 Switches for advanced users:
 .TP
+.BI \-precision " N"
+Create JPEG file with N-bit data precision.  N is 8, 12, or 16; default is 8.
+If N is 16, then
+.B -lossless
+must also be specified.  Note that only the PBMPLUS input file format supports
+data precisions other than 8.  (For historical reasons,
+.B cjpeg
+allows GIF input files to be converted into 12-bit-per-sample JPEG files, but
+this is not a useful conversion.)  Note also that PBMPLUS input files are
+silently scaled to the target data precision, even if it is lower than the
+precision of the input file.  Passing an argument of
+.B \-verbose
+to
+.B cjpeg
+will cause it to print information about the precision of the input file.
+.B Caution:
+12-bit and 16-bit data precision is not yet widely implemented, so many
+decoders will be unable to handle a 12-bit-per-sample or 16-bit-per-sample JPEG
+file at all.
+.IP
+.B \-precision\ 12
+implies
+.B \-optimize
+unless
+.B \-arithmetic
+is also specified.
+.TP
+.BI \-lossless " psv[,Pt]"
+Create a lossless JPEG file using the specified predictor selection value
+(1 through 7) and optional point transform (0 through
+.nh
+.I precision
+.hy
+- 1, where
+.nh
+.I precision
+.hy
+is the JPEG data precision in bits).  A point transform value of 0 (the
+default) is necessary in order to create a fully lossless JPEG file.  (A
+non-zero point transform value right-shifts the input samples by the specified
+number of bits, which is effectively a form of lossy color quantization.)
+.B Caution:
+lossless JPEG is not yet widely implemented, so many decoders will be unable to
+handle a lossless JPEG file at all.  In most cases, compressing and
+decompressing a lossless JPEG file is considerably slower than compressing and
+decompressing a lossy JPEG file, and lossless JPEG files are much larger than
+lossy JPEG files.  Also note that the following features will be unavailable
+when compressing or decompressing a lossless JPEG file:
+.IP
+- Quality/quantization table selection
+.IP
+- Color space conversion (the JPEG image will use the same color space as the
+input image)
+.IP
+- Color quantization
+.IP
+- DCT/IDCT algorithm selection
+.IP
+- Smoothing
+.IP
+- Downsampling/upsampling
+.IP
+- IDCT scaling
+.IP
+- Partial image decompression
+.IP
+- Transformations using
+.B jpegtran
+.IP
+Any switches used to enable or configure those features will be ignored.
+.TP
 .B \-arithmetic
 Use arithmetic coding.
 .B Caution:
-arithmetic coded JPEG is not yet widely implemented, so many decoders will be
-unable to view an arithmetic coded JPEG file at all.
+arithmetic-coded JPEG is not yet widely implemented, so many decoders will be
+unable to handle an arithmetic-coded JPEG file at all.
 .TP
 .B \-dct int
-Use integer DCT method (default).
+Use accurate 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.)
+Use less accurate integer DCT method [legacy feature].
+When the Independent JPEG Group's software was first released in 1991, the
+compression time for a 1-megapixel JPEG image on a mainstream PC was measured
+in minutes.  Thus, the \fBfast\fR integer DCT algorithm provided noticeable
+performance benefits.  On modern CPUs running libjpeg-turbo, however, the
+compression time for a 1-megapixel JPEG image is measured in milliseconds, and
+thus the performance benefits of the \fBfast\fR algorithm are much less
+noticeable.  On modern x86/x86-64 CPUs that support AVX2 instructions, the
+\fBfast\fR and \fBint\fR methods have similar performance.  On other types of
+CPUs, the \fBfast\fR method is generally about 5-15% faster than the \fBint\fR
+method.
+
 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.
+quality difference between the two algorithms.  For quality levels above 90,
+however, the difference between the \fBfast\fR and \fBint\fR methods becomes
+more pronounced.  With quality=97, for instance, the \fBfast\fR method incurs
+generally about a 1-3 dB loss in PSNR relative to the \fBint\fR method, but
+this can be larger for some images.  Do not use the \fBfast\fR 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 \fBfast\fR method is not fully
+accelerated for quality levels above 97, so it will be slower than the
+\fBint\fR method.
 .TP
 .B \-dct float
-Use floating-point DCT method.
-The float method is mainly a legacy feature.  It does not produce significantly
-more accurate results than the int method, and it is much slower.  The float
-method may also give different results on different machines due to varying
-roundoff behavior, whereas the integer methods should give the same results on
-all machines.
+Use floating-point DCT method [legacy feature].
+The \fBfloat\fR method does not produce significantly more accurate results
+than the \fBint\fR method, and it is much slower.  The \fBfloat\fR method may
+also give different results on different machines due to varying roundoff
+behavior, whereas the integer methods should give the same results on all
+machines.
+.TP
+.BI \-icc " file"
+Embed ICC color management profile contained in the specified file.
 .TP
 .BI \-restart " N"
-Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
-attached to the number.
+Emit a JPEG restart marker every N MCU rows, or every N MCUs if "B" is attached
+to the number.
+.IP
+In typical JPEG images, an MCU (Minimum Coded Unit) is the minimum set of
+interleaved "data units" (8x8 DCT blocks if the image is lossy or samples if
+the image is lossless) necessary to represent at least one data unit per
+component.  (For example, an MCU in an interleaved lossy JPEG image that uses
+4:2:2 subsampling consists of two luminance blocks followed by one block for
+each chrominance component.)  In single-component or non-interleaved JPEG
+images, an MCU is the same as a data unit.  An MCU row is a row of MCUs
+spanning the entire width of the image.
+.IP
 .B \-restart 0
 (the default) means no restart markers.
 .TP
@@ -203,7 +294,7 @@ 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, temporary files will be used.
+selects 4000000 bytes.  If more space is needed, an error will occur.
 .TP
 .BI \-outfile " name"
 Send output image to the named file, not to standard output.
@@ -213,6 +304,14 @@ 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
+.BI \-report
+Report compression progress.
+.TP
+.BI \-strict
+Treat all warnings as fatal.  Enabling this option will cause the compressor to
+abort if an LZW-compressed GIF input image contains incomplete or corrupt image
+data.
+.TP
 .B \-verbose
 Enable debug printout.  More
 .BR \-v 's
@@ -282,10 +381,10 @@ This example compresses the PPM file foo.ppm with a quality factor of
 .I foo.jpg
 .SH HINTS
 Color GIF files are not the ideal input for JPEG; JPEG is really intended for
-compressing full-color (24-bit) images.  In particular, don't try to convert
-cartoons, line drawings, and other images that have only a few distinct
-colors.  GIF works great on these, JPEG does not.  If you want to convert a
-GIF to JPEG, you should experiment with
+compressing full-color (24-bit through 48-bit) images.  In particular, don't
+try to convert cartoons, line drawings, and other images that have only a few
+distinct colors.  GIF works great on these; JPEG does not.  If you want to
+convert a GIF to JPEG, you should experiment with
 .BR cjpeg 's
 .B \-quality
 and
@@ -338,15 +437,5 @@ Independent JPEG Group
 This file was modified by The libjpeg-turbo Project to include only information
 relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
 features not present in libjpeg.
-.SH BUGS
-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.)
-.PP
+.SH ISSUES
 Not all variants of BMP and Targa file formats are supported.
-.PP
-The
-.B \-targa
-switch is not a bug, it's a feature.  (It would be a bug if the Targa format
-designers had not been clueless.)

cjpeg.c

@@ -4,11 +4,13 @@
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
  * Modified 2003-2011 by Guido Vollbeding.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2010, 2013-2014, D. R. Commander.
- * mozjpeg Modifications:
+ * Copyright (C) 2010, 2013-2014, 2017, 2019-2022, 2024, D. R. Commander.
  * Copyright (C) 2014, Mozilla Corporation.
- * 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.
@@ -28,24 +30,21 @@
  * works regardless of which command line style is used.
  */
 
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_DEPRECATE
+#endif
+
+#ifdef CJPEG_FUZZER
+#define JPEG_INTERNALS
+#endif
 #include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
 #include "jversion.h"           /* for version message */
 #include "jconfigint.h"
 
-#ifdef USE_CCOMMAND             /* command-line reader for Macintosh */
-#ifdef __MWERKS__
-#include <SIOUX.h>              /* Metrowerks needs this */
-#include <console.h>            /* ... and this */
-#endif
-#ifdef THINK_C
-#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"
@@ -65,9 +64,9 @@ static const char * const cdjpeg_message_table[] = {
  *     2) assume we can push back more than one character (works in
  *        some C implementations, but unportable);
  *     3) provide our own buffering (breaks input readers that want to use
- *        stdio directly, such as the RLE library);
+ *        stdio directly);
  * or  4) don't put back the data, and modify the input_init methods to assume
- *        they start reading after the start of file (also breaks RLE library).
+ *        they start reading after the start of file.
  * #1 is attractive for MS-DOS but is untenable on Unix.
  *
  * The most portable solution for file types that can't be identified by their
@@ -81,9 +80,10 @@ static const char * const cdjpeg_message_table[] = {
 
 static boolean is_targa;        /* records user -targa switch */
 static boolean is_jpeg;
+static boolean copy_markers;
 
 LOCAL(cjpeg_source_ptr)
-select_file_type (j_compress_ptr cinfo, FILE * infile)
+select_file_type(j_compress_ptr cinfo, FILE *infile)
 {
   int c;
 
@@ -103,30 +103,48 @@ select_file_type (j_compress_ptr cinfo, FILE * infile)
   switch (c) {
 #ifdef BMP_SUPPORTED
   case 'B':
-    return jinit_read_bmp(cinfo);
+    return jinit_read_bmp(cinfo, TRUE);
 #endif
 #ifdef GIF_SUPPORTED
   case 'G':
-    return jinit_read_gif(cinfo);
+    if (cinfo->data_precision == 16) {
+#ifdef C_LOSSLESS_SUPPORTED
+      return j16init_read_gif(cinfo);
+#else
+      ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
+      break;
+#endif
+    } else if (cinfo->data_precision == 12)
+      return j12init_read_gif(cinfo);
+    else
+      return jinit_read_gif(cinfo);
 #endif
 #ifdef PPM_SUPPORTED
   case 'P':
-    return jinit_read_ppm(cinfo);
+    if (cinfo->data_precision == 16) {
+#ifdef C_LOSSLESS_SUPPORTED
+      return j16init_read_ppm(cinfo);
+#else
+      ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
+      break;
+#endif
+    } else if (cinfo->data_precision == 12)
+      return j12init_read_ppm(cinfo);
+    else
+      return jinit_read_ppm(cinfo);
 #endif
 #ifdef PNG_SUPPORTED
   case 0x89:
+    copy_markers = TRUE;
     return jinit_read_png(cinfo);
 #endif
-#ifdef RLE_SUPPORTED
-  case 'R':
-    return jinit_read_rle(cinfo);
-#endif
 #ifdef TARGA_SUPPORTED
   case 0x00:
     return jinit_read_targa(cinfo);
 #endif
   case 0xff:
     is_jpeg = TRUE;
+    copy_markers = TRUE;
     return jinit_read_jpeg(cinfo);
   default:
     ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
@@ -146,13 +164,55 @@ select_file_type (j_compress_ptr cinfo, FILE * infile)
  */
 
 
-static const char * progname;   /* program name for error messages */
-static char * outfilename;      /* for -outfile switch */
-boolean memdst;  /* for -memdst switch */
+static const char *progname;    /* program name for error messages */
+static char *icc_filename;      /* for -icc switch */
+static char *outfilename;       /* for -outfile switch */
+static boolean memdst;          /* for -memdst switch */
+static boolean report;          /* for -report switch */
+static boolean strict;          /* for -strict switch */
+
+
+#ifdef CJPEG_FUZZER
+
+#include <setjmp.h>
+
+struct my_error_mgr {
+  struct jpeg_error_mgr pub;
+  jmp_buf setjmp_buffer;
+};
+
+void my_error_exit(j_common_ptr cinfo)
+{
+  struct my_error_mgr *myerr = (struct my_error_mgr *)cinfo->err;
+
+  longjmp(myerr->setjmp_buffer, 1);
+}
+
+static void my_emit_message_fuzzer(j_common_ptr cinfo, int msg_level)
+{
+  if (msg_level < 0)
+    cinfo->err->num_warnings++;
+}
+
+#define HANDLE_ERROR() { \
+  if (cinfo.global_state > CSTATE_START) { \
+    if (memdst && outbuffer) \
+      (*cinfo.dest->term_destination) (&cinfo); \
+    jpeg_abort_compress(&cinfo); \
+  } \
+  jpeg_destroy_compress(&cinfo); \
+  if (input_file != stdin && input_file != NULL) \
+    fclose(input_file); \
+  if (memdst) \
+    free(outbuffer); \
+  return EXIT_FAILURE; \
+}
+
+#endif
 
 
 LOCAL(void)
-usage (void)
+usage(void)
 /* complain about bad command line */
 {
   fprintf(stderr, "usage: %s [switches] ", progname);
@@ -163,14 +223,15 @@ usage (void)
 #endif
 
   fprintf(stderr, "Switches (names may be abbreviated):\n");
-  fprintf(stderr, "  -quality N[,...]   Compression quality (0..100; 5-95 is useful range)\n");
+  fprintf(stderr, "  -quality N[,...]   Compression quality (0..100; 5-95 is most 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
-  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression, enabled by default)\n");
+  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression)\n");
 #endif
 #ifdef C_PROGRESSIVE_SUPPORTED
-  fprintf(stderr, "  -progressive   Create progressive JPEG file (enabled by default)\n");
+  fprintf(stderr, "  -progressive   Create progressive JPEG file\n");
 #endif
   fprintf(stderr, "  -baseline      Create baseline JPEG file (disable progressive coding)\n");
 #ifdef TARGA_SUPPORTED
@@ -192,54 +253,69 @@ usage (void)
   fprintf(stderr, "  -tune-ms-ssim  Tune trellis optimization for MS-SSIM\n");
   fprintf(stderr, "Switches for advanced users:\n");
   fprintf(stderr, "  -noovershoot   Disable black-on-white deringing via overshoot\n");
+  fprintf(stderr, "  -nojfif        Do not write JFIF (reduces size by 18 bytes but breaks standards; no known problems in Web browsers)\n");
+  fprintf(stderr, "  -precision N   Create JPEG file with N-bit data precision\n");
+#ifdef C_LOSSLESS_SUPPORTED
+  fprintf(stderr, "                 (N is 8, 12, or 16; default is 8; if N is 16, then -lossless\n");
+  fprintf(stderr, "                 must also be specified)\n");
+#else
+  fprintf(stderr, "                 (N is 8 or 12; default is 8)\n");
+#endif
+#ifdef C_LOSSLESS_SUPPORTED
+  fprintf(stderr, "  -lossless psv[,Pt]  Create lossless JPEG file\n");
+#endif
 #ifdef C_ARITH_CODING_SUPPORTED
   fprintf(stderr, "  -arithmetic    Use arithmetic coding\n");
 #endif
 #ifdef DCT_ISLOW_SUPPORTED
-  fprintf(stderr, "  -dct int       Use integer DCT method%s\n",
+  fprintf(stderr, "  -dct int       Use accurate integer DCT method%s\n",
           (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
 #endif
 #ifdef DCT_IFAST_SUPPORTED
-  fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
+  fprintf(stderr, "  -dct fast      Use less accurate integer DCT method [legacy feature]%s\n",
           (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
 #endif
 #ifdef DCT_FLOAT_SUPPORTED
-  fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
+  fprintf(stderr, "  -dct float     Use floating-point DCT method [legacy feature]%s\n",
           (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
 #endif
   fprintf(stderr, "  -quant-baseline Use 8-bit quantization table entries for baseline JPEG compatibility\n");
   fprintf(stderr, "  -quant-table N Use predefined quantization table N:\n");
   fprintf(stderr, "                 - 0 JPEG Annex K\n");
   fprintf(stderr, "                 - 1 Flat\n");
-  fprintf(stderr, "                 - 2 Custom, tuned for MS-SSIM\n");
-  fprintf(stderr, "                 - 3 ImageMagick table by N. Robidoux\n");
-  fprintf(stderr, "                 - 4 Custom, tuned for PSNR-HVS\n");
+  fprintf(stderr, "                 - 2 Tuned for MS-SSIM on Kodak image set\n");
+  fprintf(stderr, "                 - 3 ImageMagick table by N. Robidoux (default)\n");
+  fprintf(stderr, "                 - 4 Tuned for PSNR-HVS on Kodak image set\n");
   fprintf(stderr, "                 - 5 Table from paper by Klein, Silverstein and Carney\n");
+  fprintf(stderr, "                 - 6 Table from paper by Watson, Taylor and Borthwick\n");
+  fprintf(stderr, "                 - 7 Table from paper by Ahumada, Watson, Peterson\n");
+  fprintf(stderr, "                 - 8 Table from paper by Peterson, Ahumada and Watson\n");
+  fprintf(stderr, "  -icc FILE      Embed ICC profile contained in FILE\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, "  -report        Report compression progress\n");
+  fprintf(stderr, "  -strict        Treat all warnings as fatal\n");
   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, "  -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,
-                int last_file_arg_seen, boolean for_real)
+parse_switches(j_compress_ptr cinfo, int argc, char **argv,
+               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;
@@ -250,14 +326,17 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
  */
 {
   int argn;
-  char * arg;
+  char *arg;
+#ifdef C_LOSSLESS_SUPPORTED
+  int psv = 0, pt = 0;
+#endif
   boolean force_baseline;
   boolean simple_progressive;
-  char * qualityarg = NULL;     /* saves -quality parm if any */
-  char * qtablefile = NULL;     /* saves -qtables filename if any */
-  char * qslotsarg = NULL;      /* saves -qslots parm if any */
-  char * samplearg = NULL;      /* saves -sample parm if any */
-  char * scansarg = NULL;       /* saves -scans parm if any */
+  char *qualityarg = NULL;      /* saves -quality parm if any */
+  char *qtablefile = NULL;      /* saves -qtables filename if any */
+  char *qslotsarg = NULL;       /* saves -qslots parm if any */
+  char *samplearg = NULL;       /* saves -sample parm if any */
+  char *scansarg = NULL;        /* saves -scans parm if any */
 
   /* Set up default JPEG parameters. */
 
@@ -268,8 +347,11 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
   simple_progressive = FALSE;
 #endif
   is_targa = FALSE;
+  icc_filename = NULL;
   outfilename = NULL;
   memdst = FALSE;
+  report = FALSE;
+  strict = FALSE;
   cinfo->err->trace_level = 0;
 
   /* Scan command line options, adjust parameters */
@@ -329,10 +411,11 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* 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",
                 PACKAGE_NAME, VERSION, BUILD);
-        fprintf(stderr, "%s\n\n", JCOPYRIGHT);
+        fprintf(stderr, JCOPYRIGHT1);
+        fprintf(stderr, JCOPYRIGHT2 "\n");
         fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
                 JVERSION);
         printed_version = TRUE;
@@ -367,6 +450,34 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE2,
                              atof(argv[argn]));
 
+    } else if (keymatch(arg, "icc", 1)) {
+      /* Set ICC filename. */
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      icc_filename = argv[argn];
+
+    } else if (keymatch(arg, "lossless", 1)) {
+      /* Enable lossless mode. */
+#ifdef C_LOSSLESS_SUPPORTED
+      char ch = ',', *ptr;
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%d%c", &psv, &ch) < 1 || ch != ',')
+        usage();
+      ptr = argv[argn];
+      while (*ptr && *ptr++ != ','); /* advance to next segment of arg
+                                        string */
+      if (*ptr)
+        sscanf(ptr, "%d", &pt);
+
+      /* We must postpone execution until data_precision is known. */
+#else
+      fprintf(stderr, "%s: sorry, lossless output was not compiled\n",
+              progname);
+      exit(EXIT_FAILURE);
+#endif
+
     } else if (keymatch(arg, "maxmemory", 3)) {
       /* Maximum memory in Kb (or Mb with 'm'). */
       long lval;
@@ -405,6 +516,22 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       }
       outfilename = argv[argn]; /* save it away for later use */
 
+    } else if (keymatch(arg, "precision", 3)) {
+      /* Set data precision. */
+      int val;
+
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%d", &val) != 1)
+        usage();
+#ifdef C_LOSSLESS_SUPPORTED
+      if (val != 8 && val != 12 && val != 16)
+#else
+      if (val != 8 && val != 12)
+#endif
+        usage();
+      cinfo->data_precision = val;
+
     } else if (keymatch(arg, "progressive", 1)) {
       /* Select simple progressive mode. */
 #ifdef C_PROGRESSIVE_SUPPORTED
@@ -418,13 +545,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
 
     } 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). */
@@ -451,6 +572,8 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       qtablefile = argv[argn];
       /* We postpone actually reading the file in case -quality comes later. */
 
+    } else if (keymatch(arg, "report", 3)) {
+      report = TRUE;
     } else if (keymatch(arg, "quant-table", 7)) {
       int val;
       if (++argn >= argc)       /* advance to next argument */
@@ -466,7 +589,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
     } else if (keymatch(arg, "quant-baseline", 7)) {
       /* Force quantization table to meet baseline requirements */
       force_baseline = TRUE;
-    
+
     } else if (keymatch(arg, "restart", 1)) {
       /* Restart interval in MCU rows (or in MCUs with 'b'). */
       long lval;
@@ -479,10 +602,10 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       if (lval < 0 || lval > 65535L)
         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 */
       } else {
-        cinfo->restart_in_rows = (int) lval;
+        cinfo->restart_in_rows = (int)lval;
         /* restart_interval will be computed during startup */
       }
 
@@ -501,7 +624,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
        * default sampling factors.
        */
 
-    } else if (keymatch(arg, "scans", 4)) {
+    } else if (keymatch(arg, "scans", 2)) {
       /* Set scan script. */
 #ifdef C_MULTISCAN_FILES_SUPPORTED
       if (++argn >= argc)       /* advance to next argument */
@@ -526,6 +649,9 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
         usage();
       cinfo->smoothing_factor = val;
 
+    } else if (keymatch(arg, "strict", 2)) {
+      strict = TRUE;
+
     } else if (keymatch(arg, "targa", 1)) {
       /* Input file is Targa format. */
       is_targa = TRUE;
@@ -579,6 +705,9 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
 
     } else if (keymatch(arg, "noovershoot", 11)) {
       jpeg_c_set_bool_param(cinfo, JBOOLEAN_OVERSHOOT_DERINGING, FALSE);
+
+	} else if (keymatch(arg, "nojfif", 6)) {
+      cinfo->write_JFIF_header = 0;
     } else {
       fprintf(stderr, "%s: unknown option '%s'\n", progname, arg);
       usage();                  /* bogus switch */
@@ -604,9 +733,11 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       }
 
     if (qslotsarg != NULL)      /* process -qslots if it was present */
-      if (! set_quant_slots(cinfo, qslotsarg))
+      if (!set_quant_slots(cinfo, qslotsarg))
         usage();
 
+    /* set_quality_ratings sets default subsampling, so the explicit
+       subsampling must be set after it */
     if (samplearg != NULL)      /* process -sample if it was present */
       if (! set_sample_factors(cinfo, samplearg)) {
         fprintf(stderr, "%s: can't set sample factors\n", progname);
@@ -618,9 +749,14 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       jpeg_simple_progression(cinfo);
 #endif
 
+#ifdef C_LOSSLESS_SUPPORTED
+    if (psv != 0)               /* process -lossless */
+      jpeg_enable_lossless(cinfo, psv, pt);
+#endif
+
 #ifdef C_MULTISCAN_FILES_SUPPORTED
     if (scansarg != NULL)       /* process -scans if it was present */
-      if (! read_scan_script(cinfo, scansarg))
+      if (!read_scan_script(cinfo, scansarg))
         usage();
 #endif
   }
@@ -629,31 +765,45 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
 }
 
 
+METHODDEF(void)
+my_emit_message(j_common_ptr cinfo, int msg_level)
+{
+  if (msg_level < 0) {
+    /* Treat warning as fatal */
+    cinfo->err->error_exit(cinfo);
+  } else {
+    if (cinfo->err->trace_level >= msg_level)
+      cinfo->err->output_message(cinfo);
+  }
+}
+
+
 /*
  * The main program.
  */
 
 int
-main (int argc, char **argv)
+main(int argc, char **argv)
 {
   struct jpeg_compress_struct cinfo;
+#ifdef CJPEG_FUZZER
+  struct my_error_mgr myerr;
+  struct jpeg_error_mgr &jerr = myerr.pub;
+#else
   struct jpeg_error_mgr jerr;
-#ifdef PROGRESS_REPORT
-  struct cdjpeg_progress_mgr progress;
 #endif
+  struct cdjpeg_progress_mgr progress;
   int file_index;
   cjpeg_source_ptr src_mgr;
-  FILE * input_file;
-  FILE * output_file = NULL;
+  FILE *input_file = NULL;
+  FILE *icc_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. */
-#ifdef USE_CCOMMAND
-  argc = ccommand(&argv);
-#endif
-
   progname = argv[0];
   if (progname == NULL || progname[0] == 0)
     progname = "cjpeg";         /* in case C library doesn't provide it */
@@ -683,18 +833,21 @@ main (int argc, char **argv)
 
   file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
 
+  if (strict)
+    jerr.emit_message = my_emit_message;
+
 #ifdef TWO_FILE_COMMANDLINE
   if (!memdst) {
     /* 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);
         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);
         usage();
@@ -703,7 +856,7 @@ main (int argc, char **argv)
   }
 #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();
   }
@@ -731,13 +884,51 @@ main (int argc, char **argv)
     output_file = write_stdout();
   }
 
-#ifdef PROGRESS_REPORT
-  start_progress_monitor((j_common_ptr) &cinfo, &progress);
+  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 CJPEG_FUZZER
+  jerr.error_exit = my_error_exit;
+  jerr.emit_message = my_emit_message_fuzzer;
+  if (setjmp(myerr.setjmp_buffer))
+    HANDLE_ERROR()
 #endif
 
+  if (report) {
+    start_progress_monitor((j_common_ptr)&cinfo, &progress);
+    progress.report = report;
+  }
+
   /* Figure out the input file format, and set up to read it. */
   src_mgr = select_file_type(&cinfo, input_file);
   src_mgr->input_file = input_file;
+#ifdef CJPEG_FUZZER
+  src_mgr->max_pixels = 1048576;
+#endif
 
   /* Read the input file header to obtain file size & colorspace. */
   (*src_mgr->start_input) (&cinfo, src_mgr);
@@ -752,18 +943,21 @@ 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)
   if (memdst)
     jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
   else
-#endif
     jpeg_stdio_dest(&cinfo, output_file);
 
+#ifdef CJPEG_FUZZER
+  if (setjmp(myerr.setjmp_buffer))
+    HANDLE_ERROR()
+#endif
+
   /* Start compressor */
   jpeg_start_compress(&cinfo, TRUE);
 
   /* Copy metadata */
-  if (is_jpeg) {
+  if (copy_markers) {
     jpeg_saved_marker_ptr marker;
     
     /* In the current implementation, we don't actually need to examine the
@@ -794,8 +988,25 @@ main (int argc, char **argv)
                         marker->data_length);
     }
   }
-  
+  if (icc_profile != NULL)
+    jpeg_write_icc_profile(&cinfo, icc_profile, (unsigned int)icc_len);
+
   /* Process data */
+  if (cinfo.data_precision == 16) {
+#ifdef C_LOSSLESS_SUPPORTED
+    while (cinfo.next_scanline < cinfo.image_height) {
+      num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
+      (void)jpeg16_write_scanlines(&cinfo, src_mgr->buffer16, num_scanlines);
+    }
+#else
+    ERREXIT1(&cinfo, JERR_BAD_PRECISION, cinfo.data_precision);
+#endif
+  } else if (cinfo.data_precision == 12) {
+    while (cinfo.next_scanline < cinfo.image_height) {
+      num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
+      (void)jpeg12_write_scanlines(&cinfo, src_mgr->buffer12, num_scanlines);
+    }
+  } else {
   while (cinfo.next_scanline < cinfo.image_height) {
     num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
 #if JPEG_RAW_READER
@@ -803,7 +1014,8 @@ main (int argc, char **argv)
       (void) jpeg_write_raw_data(&cinfo, src_mgr->plane_pointer, num_scanlines);
     else
 #endif
-    (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 */
@@ -817,17 +1029,18 @@ main (int argc, char **argv)
   if (output_file != stdout && output_file != NULL)
     fclose(output_file);
 
-#ifdef PROGRESS_REPORT
-  end_progress_monitor((j_common_ptr) &cinfo);
-#endif
+  if (report)
+    end_progress_monitor((j_common_ptr)&cinfo);
 
   if (memdst) {
+#ifndef CJPEG_FUZZER
     fprintf(stderr, "Compressed size:  %lu bytes\n", outsize);
-    if (outbuffer != NULL)
-      free(outbuffer);
+#endif
+    free(outbuffer);
   }
 
+  free(icc_profile);
+
   /* All done. */
-  exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
-  return 0;                     /* suppress no-return-value warnings */
+  return (jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
 }

cmakescripts/BuildPackages.cmake

@@ -0,0 +1,176 @@
+# This file is included from the top-level CMakeLists.txt.  We just store it
+# here to avoid cluttering up that file.
+
+###############################################################################
+# 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(CPU_TYPE STREQUAL "arm64")
+  set(DEBARCH ${CPU_TYPE})
+elseif(CPU_TYPE STREQUAL "arm")
+  check_c_source_compiles("
+    #if __ARM_PCS_VFP != 1
+    #error \"float ABI != hard\"
+    #endif
+    int main(void) { return 0; }" HAVE_HARD_FLOAT)
+  if(HAVE_HARD_FLOAT)
+    set(RPMARCH armv7hl)
+    set(DEBARCH armhf)
+  else()
+    set(RPMARCH armel)
+    set(DEBARCH armel)
+  endif()
+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 pkgscripts/makerpm
+  SOURCES pkgscripts/makerpm)
+
+configure_file(release/makesrpm.in pkgscripts/makesrpm)
+
+add_custom_target(srpm 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 pkgscripts/makedpkg
+  SOURCES pkgscripts/makedpkg)
+
+endif() # Linux
+
+
+###############################################################################
+# Windows installer (NullSoft Installer)
+###############################################################################
+
+if(WIN32)
+
+if(MSVC_LIKE)
+  set(INST_PLATFORM "Visual C++")
+  set(INST_ID vc)
+  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-${INST_ID})
+  set(INST_REG_NAME ${CMAKE_PROJECT_NAME})
+elseif(MINGW)
+  set(INST_PLATFORM GCC)
+  set(INST_ID gcc)
+  set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-${INST_ID})
+  set(INST_REG_NAME ${CMAKE_PROJECT_NAME}-${INST_ID})
+  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_REG_NAME}64)
+  set(INST_DEFS ${INST_DEFS} -DWIN64)
+endif()
+
+if(WITH_JAVA)
+  set(INST_DEFS ${INST_DEFS} -DJAVA)
+endif()
+
+if(GENERATOR_IS_MULTI_CONFIG)
+  set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=${CMAKE_CFG_INTDIR}\\")
+else()
+  set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=")
+endif()
+
+string(REGEX REPLACE "/" "\\\\" INST_DIR ${CMAKE_INSTALL_PREFIX})
+
+configure_file(release/installer.nsi.in installer.nsi @ONLY)
+# TODO: It would be nice to eventually switch to CPack and eliminate this mess,
+# but not today.
+configure_file(win/projectTargets.cmake.in
+  win/${CMAKE_PROJECT_NAME}Targets.cmake @ONLY)
+configure_file(win/${INST_ID}/projectTargets-release.cmake.in
+  win/${CMAKE_PROJECT_NAME}Targets-release.cmake @ONLY)
+
+if(WITH_JAVA)
+  set(JAVA_DEPEND turbojpeg-java)
+endif()
+if(WITH_TURBOJPEG)
+  set(TURBOJPEG_DEPEND turbojpeg turbojpeg-static tjbench)
+endif()
+add_custom_target(installer
+  makensis -nocd ${INST_DEFS} installer.nsi
+  DEPENDS jpeg jpeg-static rdjpgcom wrjpgcom cjpeg djpeg jpegtran
+    ${JAVA_DEPEND} ${TURBOJPEG_DEPEND}
+  SOURCES installer.nsi)
+
+endif() # WIN32
+
+
+###############################################################################
+# Mac DMG
+###############################################################################
+
+if(APPLE)
+
+set(SECONDARY_BUILD "" CACHE PATH
+  "Directory containing cross-compiled x86-64 or Armv8 (64-bit) iOS or macOS build to include in universal binaries")
+
+set(MACOS_APP_CERT_NAME "" CACHE STRING
+  "Name of the Developer ID Application certificate (in the macOS keychain) that should be used to sign the libjpeg-turbo DMG.  Leave this blank to generate an unsigned DMG.")
+set(MACOS_INST_CERT_NAME "" CACHE STRING
+  "Name of the Developer ID Installer certificate (in the macOS keychain) that should be used to sign the libjpeg-turbo installer package.  Leave this blank to generate an unsigned package.")
+
+configure_file(release/makemacpkg.in pkgscripts/makemacpkg)
+configure_file(release/Distribution.xml.in pkgscripts/Distribution.xml)
+configure_file(release/Welcome.rtf.in pkgscripts/Welcome.rtf)
+configure_file(release/uninstall.in pkgscripts/uninstall)
+
+add_custom_target(dmg pkgscripts/makemacpkg
+  SOURCES pkgscripts/makemacpkg)
+
+endif() # APPLE
+
+
+###############################################################################
+# Generic
+###############################################################################
+
+add_custom_target(dist
+  COMMAND git archive --prefix=${CMAKE_PROJECT_NAME}-${VERSION}/ HEAD |
+    gzip > ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}-${VERSION}.tar.gz
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+
+configure_file(release/maketarball.in pkgscripts/maketarball)
+
+add_custom_target(tarball pkgscripts/maketarball
+  SOURCES pkgscripts/maketarball)
+
+configure_file(release/libjpeg.pc.in pkgscripts/libjpeg.pc @ONLY)
+
+if(WITH_TURBOJPEG)
+  configure_file(release/libturbojpeg.pc.in pkgscripts/libturbojpeg.pc @ONLY)
+endif()
+
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+  pkgscripts/${CMAKE_PROJECT_NAME}ConfigVersion.cmake
+  VERSION ${VERSION} COMPATIBILITY AnyNewerVersion)
+
+configure_package_config_file(release/Config.cmake.in
+  pkgscripts/${CMAKE_PROJECT_NAME}Config.cmake
+  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${CMAKE_PROJECT_NAME})

cmakescripts/GNUInstallDirs.cmake

@@ -0,0 +1,424 @@
+#.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 2018 Tobias C. Berner
+# Copyright 2018 Matthias Räncker
+# Copyright 2016, 2019, 2024 D. R. Commander
+# Copyright 2016, 2021 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_${var} "FORCE")
+  endif()
+
+  if(DEFINED CMAKE_INSTALL_${var} AND NOT CMAKE_INSTALL_${var} MATCHES "^/")
+    set_property(CACHE CMAKE_INSTALL_${var} PROPERTY TYPE PATH)
+  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("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
+          set(CMAKE_INSTALL_DEFAULT_LIBDIR "lib64")
+        elseif(CMAKE_C_COMPILER_ABI MATCHES "ELF X32")
+          set(CMAKE_INSTALL_DEFAULT_LIBDIR "libx32")
+        endif()
+      endif()
+    endif()
+  endif()
+endif()
+GNUInstallDirs_set_install_dir(LIBDIR
+  "Directory into which object files and object code libraries should be installed")
+
+if(NOT DEFINED CMAKE_INSTALL_DEFAULT_INCLUDEDIR)
+  set(CMAKE_INSTALL_DEFAULT_INCLUDEDIR "include")
+endif()
+GNUInstallDirs_set_install_dir(INCLUDEDIR
+  "Directory into which C header files should be installed")
+
+if(NOT DEFINED CMAKE_INSTALL_DEFAULT_OLDINCLUDEDIR)
+  set(CMAKE_INSTALL_DEFAULT_OLDINCLUDEDIR "/usr/include")
+endif()
+GNUInstallDirs_set_install_dir(OLDINCLUDEDIR
+  PATH "Directory into which C header files for non-GCC compilers should be installed")
+
+if(NOT DEFINED CMAKE_INSTALL_DEFAULT_DATAROOTDIR)
+  set(CMAKE_INSTALL_DEFAULT_DATAROOTDIR "share")
+endif()
+GNUInstallDirs_set_install_dir(DATAROOTDIR
+  "The root of the directory tree for read-only architecture-independent data files")
+
+#-----------------------------------------------------------------------------
+# Values whose defaults are relative to DATAROOTDIR.  Store empty values in
+# the cache and store the defaults in local variables if the cache values are
+# not set explicitly.  This auto-updates the defaults as DATAROOTDIR changes.
+
+if(NOT DEFINED CMAKE_INSTALL_DEFAULT_DATADIR)
+  set(CMAKE_INSTALL_DEFAULT_DATADIR "<CMAKE_INSTALL_DATAROOTDIR>")
+endif()
+GNUInstallDirs_set_install_dir(DATADIR
+  "The directory under which read-only architecture-independent data files should be installed")
+
+if(NOT DEFINED CMAKE_INSTALL_DEFAULT_INFODIR)
+  if(CMAKE_SYSTEM_NAME MATCHES "^(([^kF].*)?BSD|DragonFly)$")
+    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 "^(([^k].*)?BSD|DragonFly)$" AND NOT CMAKE_SYSTEM_NAME MATCHES "^(FreeBSD)$")
+    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/PackageInfo.cmake

@@ -0,0 +1,13 @@
+# 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 ${CMAKE_PROJECT_NAME} Project)")
+set(PKGURL "https://${CMAKE_PROJECT_NAME}.org" CACHE STRING
+  "URL of project web site to be included in distribution package descriptions (default: https://${CMAKE_PROJECT_NAME}.org)")
+set(PKGEMAIL "information@${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})")

cmakescripts/cmake_uninstall.cmake.in

@@ -0,0 +1,24 @@
+# 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/md5cmp.cmake

@@ -1,15 +0,0 @@
-if(NOT MD5)
-  message(FATAL_ERROR "MD5 not specified")
-endif()
-
-if(NOT FILE)
-  message(FATAL_ERROR "FILE not specified")
-endif()
-
-file(MD5 ${FILE} MD5FILE)
-
-if(NOT MD5 STREQUAL MD5FILE)
-	message(FATAL_ERROR "MD5 of ${FILE} should be ${MD5}, not ${MD5FILE}.")
-else()
-	message(STATUS "${MD5}: OK")
-endif()

cmakescripts/testclean.cmake

@@ -24,7 +24,23 @@ file(GLOB FILES
   *_440_*.png
   *_440_*.ppm
   *_440_*.jpg
-  *_440.yuv)
+  *_440.yuv
+  *_411_*.bmp
+  *_411_*.png
+  *_411_*.ppm
+  *_411_*.jpg
+  *_411.yuv
+  *_441_*.bmp
+  *_441_*.png
+  *_441_*.ppm
+  *_441_*.jpg
+  *_441.yuv
+  *_LOSSL*S_*.bmp
+  *_LOSSL*S_*.ppm
+  *_LOSSL*S_*.jpg
+  croptest.log
+  tjbenchtest*.log
+  tjexampletest*.log)
 
 if(NOT FILES STREQUAL "")
   message(STATUS "Removing test files")

cmakescripts/tjbenchtest.cmake

@@ -0,0 +1,77 @@
+if(NOT DEFINED PRECISION)
+  message(FATAL_ERROR "PRECISION must be specified")
+endif()
+
+if(NOT DEFINED WITH_JAVA)
+  message(FATAL_ERROR "WITH_JAVA must be specified")
+endif()
+
+macro(check_error program)
+  if(NOT RESULT EQUAL 0)
+    message(FATAL_ERROR "${program} failed.")
+  endif()
+endmacro()
+
+macro(run_test PROG ARGS)
+  string(REPLACE ";" " " SPACED_ARGS "${ARGS}")
+  message(STATUS "${PROG} ${SPACED_ARGS}")
+  execute_process(COMMAND ${CMAKE_CURRENT_BINARY_DIR}/${PROG} ${ARGS}
+    RESULT_VARIABLE RESULT)
+  check_error("${PROG} ${SPACED_ARGS}")
+endmacro()
+
+if(NOT PRECISION EQUAL 16)
+  run_test(tjbenchtest "-precision;${PRECISION}")
+  run_test(tjbenchtest "-precision;${PRECISION};-alloc")
+endif()
+if(PRECISION EQUAL 8)
+  run_test(tjbenchtest "-precision;${PRECISION};-yuv")
+  run_test(tjbenchtest "-precision;${PRECISION};-yuv;-alloc")
+  run_test(tjbenchtest "-precision;${PRECISION};-optimize")
+  run_test(tjbenchtest "-precision;${PRECISION};-optimize;-yuv")
+endif()
+if(NOT PRECISION EQUAL 16)
+  run_test(tjbenchtest "-precision;${PRECISION};-progressive")
+endif()
+if(PRECISION EQUAL 8)
+  run_test(tjbenchtest "-precision;${PRECISION};-progressive;-yuv")
+endif()
+if(NOT PRECISION EQUAL 16)
+  run_test(tjbenchtest "-precision;${PRECISION};-arithmetic")
+  run_test(tjbenchtest "-precision;${PRECISION};-progressive;-arithmetic")
+endif()
+if(PRECISION EQUAL 8)
+  run_test(tjbenchtest "-precision;${PRECISION};-arithmetic;-yuv")
+endif()
+run_test(tjbenchtest "-precision;${PRECISION};-lossless")
+run_test(tjbenchtest "-precision;${PRECISION};-lossless;-alloc")
+if(PRECISION EQUAL 8)
+  run_test(tjexampletest "")
+endif()
+if(WITH_JAVA)
+  if(NOT PRECISION EQUAL 16)
+    run_test(tjbenchtest "-java;-precision;${PRECISION}")
+  endif()
+  if(PRECISION EQUAL 8)
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-yuv")
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-optimize")
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-optimize;-yuv")
+  endif()
+  if(NOT PRECISION EQUAL 16)
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-progressive")
+  endif()
+  if(PRECISION EQUAL 8)
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-progressive;-yuv")
+  endif()
+  if(NOT PRECISION EQUAL 16)
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-arithmetic")
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-progressive;-arithmetic")
+  endif()
+  if(PRECISION EQUAL 8)
+    run_test(tjbenchtest "-java;-precision;${PRECISION};-arithmetic;-yuv")
+  endif()
+  run_test(tjbenchtest "-java;-precision;${PRECISION};-lossless")
+  if(PRECISION EQUAL 8)
+    run_test(tjexampletest "-java")
+  endif()
+endif()

cmyk.h

@@ -0,0 +1,61 @@
+/*
+ * cmyk.h
+ *
+ * Copyright (C) 2017-2018, 2022, 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 "jsamplecomp.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 / (double)_MAXJSAMPLE);
+  double mtmp = 1.0 - ((double)g / (double)_MAXJSAMPLE);
+  double ytmp = 1.0 - ((double)b / (double)_MAXJSAMPLE);
+  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)((double)_MAXJSAMPLE - ctmp * (double)_MAXJSAMPLE + 0.5);
+  *m = (_JSAMPLE)((double)_MAXJSAMPLE - mtmp * (double)_MAXJSAMPLE + 0.5);
+  *y = (_JSAMPLE)((double)_MAXJSAMPLE - ytmp * (double)_MAXJSAMPLE + 0.5);
+  *k = (_JSAMPLE)((double)_MAXJSAMPLE - ktmp * (double)_MAXJSAMPLE + 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 / (double)_MAXJSAMPLE + 0.5);
+  *g = (_JSAMPLE)((double)m * (double)k / (double)_MAXJSAMPLE + 0.5);
+  *b = (_JSAMPLE)((double)y * (double)k / (double)_MAXJSAMPLE + 0.5);
+}
+
+
+#endif /* CMYK_H */

coderules.txt

@@ -4,7 +4,7 @@ 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
 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

configure.ac

@@ -1,578 +0,0 @@
-#                                               -*- Autoconf -*-
-# Process this file with autoconf to produce a configure script.
-
-AC_PREREQ([2.56])
-AC_INIT([mozjpeg], [3.1])
-BUILD=`date +%Y%m%d`
-
-AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)])
-AC_PREFIX_DEFAULT(/opt/mozjpeg)
-
-# Checks for programs.
-SAVED_CFLAGS=${CFLAGS}
-SAVED_CPPFLAGS=${CPPFLAGS}
-AC_PROG_CPP
-AC_PROG_CC
-m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
-AM_PROG_AS
-AM_PROG_CC_C_O
-AC_PROG_INSTALL
-m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
-AC_PROG_LIBTOOL
-AC_PROG_LN_S
-
-# When the prefix is /opt/mozjpeg, we assume that an "official" binary is
-# being created, and thus we install things into specific locations.
-
-old_prefix=${prefix}
-if test "x$prefix" = "xNONE" -a "x$ac_default_prefix" != "x"; then
-  prefix=$ac_default_prefix
-fi
-DATADIR=`eval echo ${datadir}`
-DATADIR=`eval echo $DATADIR`
-if test "$DATADIR" = "/opt/mozjpeg/share"; then
-  datadir='${prefix}'
-fi
-DATADIR=`eval echo ${datarootdir}`
-DATADIR=`eval echo $DATADIR`
-if test "$DATADIR" = "/opt/mozjpeg/share"; then
-  datarootdir='${prefix}'
-fi
-
-old_exec_prefix=${exec_prefix}
-if test "x$exec_prefix" = "xNONE"; then
-  exec_prefix=${prefix}
-fi
-
-if test "x${libdir}" = 'x${exec_prefix}/lib' -o "x${libdir}" = 'x${prefix}/lib'; then
-  LIBDIR=`eval echo ${libdir}`
-  LIBDIR=`eval echo $LIBDIR`
-  if test "$LIBDIR" = "/opt/mozjpeg/lib"; then
-    case $host_os in
-      darwin*)
-        ;;
-      *)
-        AC_CHECK_SIZEOF(long)
-        if test "${ac_cv_sizeof_long}" = "8"; then
-          libdir='${exec_prefix}/lib64'
-        elif test "${ac_cv_sizeof_long}" = "4"; then
-          libdir='${exec_prefix}/lib32'
-        fi
-        ;;
-    esac
-  fi
-fi
-exec_prefix=${old_exec_prefix}
-prefix=${old_prefix}
-
-# Check whether compiler supports pointers to undefined structures
-AC_MSG_CHECKING(whether compiler supports pointers to undefined structures)
-AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ], ,
-  AC_MSG_RESULT(yes),
-  [AC_MSG_RESULT(no)
-   AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1],
-     [Compiler does not support pointers to undefined structures.])])
-
-if test "x${GCC}" = "xyes"; then
-  if test "x${SAVED_CFLAGS}" = "x"; then
-    CFLAGS=-O3
-  fi
-  if test "x${SAVED_CPPFLAGS}" = "x"; then
-    CPPFLAGS=-Wall
-  fi
-fi
-
-AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
-if test "x${SUNCC}" = "xyes"; then
-  if test "x${SAVED_CFLAGS}" = "x"; then
-    CFLAGS=-xO5
-  fi
-fi
-
-# Checks for libraries.
-AC_CHECK_LIB([m],[pow])
-
-PKG_CHECK_MODULES([libpng], [libpng], [HAVE_LIBPNG=1], [
-  PKG_CHECK_MODULES([libpng], [libpng12], [HAVE_LIBPNG=1], [HAVE_LIBPNG=0])
-])
-AM_CONDITIONAL([HAVE_LIBPNG], [test "$HAVE_LIBPNG" -eq 1])
-
-# Checks for header files.
-AC_HEADER_STDC
-AC_CHECK_HEADERS([stddef.h stdlib.h locale.h string.h])
-AC_CHECK_HEADER([sys/types.h],
-  AC_DEFINE([NEED_SYS_TYPES_H], 1, [Define if you need to include <sys/types.h> to get size_t.]))
-
-# Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_C_CHAR_UNSIGNED
-AC_C_INLINE
-AC_TYPE_SIZE_T
-AC_CHECK_TYPES([unsigned char, unsigned short])
-
-AC_MSG_CHECKING([if right shift is signed])
-AC_TRY_RUN(
-  [#include <stdio.h>
-   int is_shifting_signed (long arg) {
-     long res = arg >> 4;
-
-     if (res == -0x7F7E80CL)
-       return 1; /* right shift is signed */
-
-     /* see if unsigned-shift hack will fix it. */
-     /* we can't just test exact value since it depends on width of long... */
-     res |= (~0L) << (32-4);
-     if (res == -0x7F7E80CL)
-       return 0; /* right shift is unsigned */
-
-     printf("Right shift isn't acting as I expect it to.\n");
-     printf("I fear the JPEG software will not work at all.\n\n");
-     return 0; /* try it with unsigned anyway */
-   }
-   int main (void) {
-     exit(is_shifting_signed(-0x7F7E80B1L));
-   }],
-  [AC_MSG_RESULT(no)
-   AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], 1,
-     [Define if your (broken) compiler shifts signed values as if they were unsigned.])],
-  [AC_MSG_RESULT(yes)],
-  [AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
-
-# Checks for library functions.
-AC_CHECK_FUNCS([memset memcpy], [],
-  [AC_DEFINE([NEED_BSD_STRINGS], 1,
-     [Define if you have BSD-like bzero and bcopy in <strings.h> rather than memset/memcpy in <string.h>.])])
-
-AC_MSG_CHECKING([libjpeg API version])
-AC_ARG_VAR(JPEG_LIB_VERSION, [libjpeg API version (62, 70, or 80)])
-if test "x$JPEG_LIB_VERSION" = "x"; then
-  AC_ARG_WITH([jpeg7],
-    AC_HELP_STRING([--with-jpeg7],
-      [Emulate libjpeg v7 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b.)]))
-  AC_ARG_WITH([jpeg8],
-    AC_HELP_STRING([--with-jpeg8],
-      [Emulate libjpeg v8 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b.)]))
-  if test "x${with_jpeg8}" = "xyes"; then
-    JPEG_LIB_VERSION=80
-  else
-    if test "x${with_jpeg7}" = "xyes"; then
-      JPEG_LIB_VERSION=70
-    else
-      JPEG_LIB_VERSION=62
-    fi
-  fi
-fi
-JPEG_LIB_VERSION_DECIMAL=`expr $JPEG_LIB_VERSION / 10`.`expr $JPEG_LIB_VERSION % 10`
-AC_SUBST(JPEG_LIB_VERSION_DECIMAL)
-AC_MSG_RESULT([$JPEG_LIB_VERSION_DECIMAL])
-AC_DEFINE_UNQUOTED(JPEG_LIB_VERSION, [$JPEG_LIB_VERSION],
-  [libjpeg API version])
-
-AC_ARG_VAR(SO_MAJOR_VERSION,
-  [Major version of the mozjpeg shared library (default is determined by the API version)])
-AC_ARG_VAR(SO_MINOR_VERSION,
-  [Minor version of the mozjpeg shared library (default is determined by the API version)])
-if test "x$SO_MAJOR_VERSION" = "x"; then
-  case "$JPEG_LIB_VERSION" in
-    62)  SO_MAJOR_VERSION=$JPEG_LIB_VERSION ;;
-    *)   SO_MAJOR_VERSION=`expr $JPEG_LIB_VERSION / 10` ;;
-  esac
-fi
-if test "x$SO_MINOR_VERSION" = "x"; then
-  case "$JPEG_LIB_VERSION" in
-    80)  SO_MINOR_VERSION=2 ;;
-    *)   SO_MINOR_VERSION=0 ;;
-  esac
-fi
-
-RPM_CONFIG_ARGS=
-
-# Memory source/destination managers
-SO_AGE=1
-MEM_SRCDST_FUNCTIONS=
-if test "x${with_jpeg8}" != "xyes"; then
-  AC_MSG_CHECKING([whether to include in-memory source/destination managers])
-  AC_ARG_WITH([mem-srcdst],
-    AC_HELP_STRING([--without-mem-srcdst],
-      [Do not include in-memory source/destination manager functions when emulating the libjpeg v6b or v7 API/ABI]))
-  if test "x$with_mem_srcdst" != "xno"; then
-    AC_MSG_RESULT(yes)
-    AC_DEFINE([MEM_SRCDST_SUPPORTED], [1],
-      [Support in-memory source/destination managers])
-    SO_AGE=2
-    MEM_SRCDST_FUNCTIONS="global:  jpeg_mem_dest;  jpeg_mem_src;";
-  else
-    AC_MSG_RESULT(no)
-    RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-mem-srcdst"
-  fi
-fi
-
-AC_MSG_CHECKING([libjpeg shared library version])
-AC_MSG_RESULT([$SO_MAJOR_VERSION.$SO_AGE.$SO_MINOR_VERSION])
-LIBTOOL_CURRENT=`expr $SO_MAJOR_VERSION + $SO_AGE`
-AC_SUBST(LIBTOOL_CURRENT)
-AC_SUBST(SO_MAJOR_VERSION)
-AC_SUBST(SO_MINOR_VERSION)
-AC_SUBST(SO_AGE)
-AC_SUBST(MEM_SRCDST_FUNCTIONS)
-
-AC_DEFINE_UNQUOTED(MOZJPEG_VERSION, [$VERSION], [mozjpeg version])
-
-VERSION_SCRIPT=yes
-AC_ARG_ENABLE([ld-version-script],
-  AS_HELP_STRING([--disable-ld-version-script],
-    [Disable linker version script for mozjpeg (default is to use linker version script if the linker supports it)]),
-  [VERSION_SCRIPT=$enableval], [])
-
-AC_MSG_CHECKING([whether the linker supports version scripts])
-SAVED_LDFLAGS="$LDFLAGS"
-LDFLAGS="$LDFLAGS -Wl,--version-script,conftest.map"
-cat > conftest.map <<EOF
-VERS_1 {
-  global: *;
-};
-EOF
-AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM([], [])])],
-  [VERSION_SCRIPT_FLAG=-Wl,--version-script,;
-   AC_MSG_RESULT([yes (GNU style)])],
-  [])
-if test "x$VERSION_SCRIPT_FLAG" = "x"; then
-  LDFLAGS="$SAVED_LDFLAGS -Wl,-M,conftest.map"
-  AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM([], [])])],
-    [VERSION_SCRIPT_FLAG=-Wl,-M,;
-     AC_MSG_RESULT([yes (Sun style)])],
-    [])
-fi
-if test "x$VERSION_SCRIPT_FLAG" = "x"; then
-  VERSION_SCRIPT=no
-  AC_MSG_RESULT(no)
-fi
-LDFLAGS="$SAVED_LDFLAGS"
-
-AC_MSG_CHECKING([whether to use version script when building mozjpeg])
-AC_MSG_RESULT($VERSION_SCRIPT)
-
-AM_CONDITIONAL(VERSION_SCRIPT, test "x$VERSION_SCRIPT" = "xyes")
-AC_SUBST(VERSION_SCRIPT_FLAG)
-
-# Check for non-broken inline under various spellings
-AC_MSG_CHECKING(for inline)
-ljt_cv_inline=""
-AC_TRY_COMPILE(, [} inline __attribute__((always_inline)) int foo() { return 0; }
-int bar() { return foo();], ljt_cv_inline="inline __attribute__((always_inline))",
-AC_TRY_COMPILE(, [} __inline__ int foo() { return 0; }
-int bar() { return foo();], ljt_cv_inline="__inline__",
-AC_TRY_COMPILE(, [} __inline int foo() { return 0; }
-int bar() { return foo();], ljt_cv_inline="__inline",
-AC_TRY_COMPILE(, [} inline int foo() { return 0; }
-int bar() { return foo();], ljt_cv_inline="inline"))))
-AC_MSG_RESULT($ljt_cv_inline)
-AC_DEFINE_UNQUOTED([INLINE],[$ljt_cv_inline],[How to obtain function inlining.])
-
-# Arithmetic coding support
-AC_MSG_CHECKING([whether to include arithmetic encoding support])
-AC_ARG_WITH([arith-enc],
-  AC_HELP_STRING([--without-arith-enc],
-    [Do not include arithmetic encoding support]))
-if test "x$with_12bit" = "xyes"; then
-  with_arith_enc=no
-fi
-if test "x$with_arith_enc" = "xno"; then
-  AC_MSG_RESULT(no)
-  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-enc"
-else
-  AC_DEFINE([C_ARITH_CODING_SUPPORTED], [1], [Support arithmetic encoding])
-  AC_MSG_RESULT(yes)
-fi
-AM_CONDITIONAL([WITH_ARITH_ENC], [test "x$with_arith_enc" != "xno"])
-
-AC_MSG_CHECKING([whether to include arithmetic decoding support])
-AC_ARG_WITH([arith-dec],
-  AC_HELP_STRING([--without-arith-dec],
-    [Do not include arithmetic decoding support]))
-if test "x$with_12bit" = "xyes"; then
-  with_arith_dec=no
-fi
-if test "x$with_arith_dec" = "xno"; then
-  AC_MSG_RESULT(no)
-  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-dec"
-else
-  AC_DEFINE([D_ARITH_CODING_SUPPORTED], [1], [Support arithmetic decoding])
-  AC_MSG_RESULT(yes)
-fi
-AM_CONDITIONAL([WITH_ARITH_DEC], [test "x$with_arith_dec" != "xno"])
-
-AM_CONDITIONAL([WITH_ARITH],
-  [test "x$with_arith_dec" != "xno" -o "x$with_arith_enc" != "xno"])
-
-# 12-bit component support
-AC_MSG_CHECKING([whether to use 12-bit samples])
-AC_ARG_WITH([12bit],
-  AC_HELP_STRING([--with-12bit], [Encode/decode JPEG images with 12-bit samples (implies --without-simd --without-turbojpeg --without-arith-dec --without-arith-enc)]))
-if test "x$with_12bit" = "xyes"; then
-  AC_DEFINE([BITS_IN_JSAMPLE], [12], [use 8 or 12])
-  AC_MSG_RESULT(yes)
-else
-  AC_MSG_RESULT(no)
-fi
-AM_CONDITIONAL([WITH_12BIT], [test "x$with_12bit" = "xyes"])
-
-# TurboJPEG support
-AC_MSG_CHECKING([whether to build TurboJPEG C wrapper])
-AC_ARG_WITH([turbojpeg],
-  AC_HELP_STRING([--without-turbojpeg],
-    [Do not include the TurboJPEG wrapper library and associated test programs]))
-if test "x$with_12bit" = "xyes"; then
-  with_turbojpeg=no
-fi
-if test "x$with_turbojpeg" = "xno"; then
-  AC_MSG_RESULT(no)
-  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-turbojpeg"
-else
-  AC_MSG_RESULT(yes)
-fi
-
-# Java support
-AC_ARG_VAR(JAVAC, [Java compiler command (default: javac)])
-if test "x$JAVAC" = "x"; then
-  JAVAC=javac
-fi
-AC_SUBST(JAVAC)
-AC_ARG_VAR(JAVACFLAGS, [Java compiler flags])
-AC_SUBST(JAVACFLAGS)
-AC_ARG_VAR(JAR, [Java archive command (default: jar)])
-if test "x$JAR" = "x"; then
-  JAR=jar
-fi
-AC_SUBST(JAR)
-AC_ARG_VAR(JAVA, [Java runtime command (default: java)])
-if test "x$JAVA" = "x"; then
-  JAVA=java
-fi
-AC_SUBST(JAVA)
-AC_ARG_VAR(JNI_CFLAGS,
-  [C compiler flags needed to include jni.h (default: -I/System/Library/Frameworks/JavaVM.framework/Headers on OS X, '-I/usr/java/include -I/usr/java/include/solaris' on Solaris, and '-I/usr/java/default/include -I/usr/java/default/include/linux' on Linux)])
-
-AC_MSG_CHECKING([whether to build TurboJPEG Java wrapper])
-AC_ARG_WITH([java],
-  AC_HELP_STRING([--with-java], [Build Java wrapper for the TurboJPEG library]))
-if test "x$with_12bit" = "xyes" -o "x$with_turbojpeg" = "xno"; then
-  with_java=no
-fi
-
-WITH_JAVA=0
-if test "x$with_java" = "xyes"; then
-  AC_MSG_RESULT(yes)
-
-  case $host_os in
-    darwin*)
-      DEFAULT_JNI_CFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers
-      ;;
-    solaris*)
-      DEFAULT_JNI_CFLAGS='-I/usr/java/include -I/usr/java/include/solaris'
-      ;;
-    linux*)
-      DEFAULT_JNI_CFLAGS='-I/usr/java/default/include -I/usr/java/default/include/linux'
-      ;;
-  esac
-  if test "x$JNI_CFLAGS" = "x"; then
-    JNI_CFLAGS=$DEFAULT_JNI_CFLAGS
-  fi
-
-  SAVE_CPPFLAGS=${CPPFLAGS}
-  CPPFLAGS="${CPPFLAGS} ${JNI_CFLAGS}"
-  AC_CHECK_HEADERS([jni.h], [DUMMY=1],
-    [AC_MSG_ERROR([Could not find JNI header file])])
-  CPPFLAGS=${SAVE_CPPFLAGS}
-  AC_SUBST(JNI_CFLAGS)
-
-  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --with-java"
-  JAVA_RPM_CONTENTS_1='%dir %{_datadir}/classes'
-  JAVA_RPM_CONTENTS_2=%{_datadir}/classes/turbojpeg.jar
-  WITH_JAVA=1
-else
-  AC_MSG_RESULT(no)
-fi
-AM_CONDITIONAL([WITH_JAVA], [test "x$with_java" = "xyes"])
-AC_SUBST(WITH_JAVA)
-AC_SUBST(JAVA_RPM_CONTENTS_1)
-AC_SUBST(JAVA_RPM_CONTENTS_2)
-
-# optionally force using gas-preprocessor.pl for compatibility testing
-AC_ARG_WITH([gas-preprocessor],
-  AC_HELP_STRING([--with-gas-preprocessor],
-    [Force using gas-preprocessor.pl on ARM.]))
-if test "x${with_gas_preprocessor}" = "xyes"; then
-  case $host_os in
-    darwin*)
-      CCAS="gas-preprocessor.pl -fix-unreq $CC"
-      ;;
-    *)
-      CCAS="gas-preprocessor.pl -no-fix-unreq $CC"
-      ;;
-  esac
-  AC_SUBST([CCAS])
-fi
-
-# SIMD is optional
-AC_ARG_WITH([simd],
-  AC_HELP_STRING([--without-simd], [Do not include SIMD extensions]))
-if test "x$with_12bit" = "xyes"; then
-  with_simd=no
-fi
-if test "x${with_simd}" != "xno"; then
-  require_simd=no
-  if test "x${with_simd}" = "xyes"; then
-    require_simd=yes
-  fi
-  # Check if we're on a supported CPU
-  AC_MSG_CHECKING([if we have SIMD optimisations for cpu type])
-  case "$host_cpu" in
-    x86_64 | amd64)
-      AC_MSG_RESULT([yes (x86_64)])
-      AC_PROG_NASM
-      simd_arch=x86_64
-      ;;
-    i*86 | x86 | ia32)
-      AC_MSG_RESULT([yes (i386)])
-      AC_PROG_NASM
-      simd_arch=i386
-      ;;
-    arm*)
-      AC_MSG_RESULT([yes (arm)])
-      AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
-      AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE(
-        [if test "x$ac_use_gas_preprocessor" = "xyes"; then
-           AC_MSG_RESULT([yes (with gas-preprocessor)])
-         else
-           AC_MSG_RESULT([yes])
-         fi
-         simd_arch=arm],
-        [AC_MSG_RESULT([no])
-         with_simd=no])
-      if test "x${with_simd}" = "xno"; then
-        if test "x${require_simd}" = "xyes"; then
-          AC_MSG_ERROR([SIMD support can't be enabled.])
-        else
-          AC_MSG_WARN([SIMD support can't be enabled.  Performance will suffer.])
-        fi
-      fi
-      ;;
-    aarch64*)
-      AC_MSG_RESULT([yes (arm64)])
-      AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
-      AC_CHECK_COMPATIBLE_ARM64_ASSEMBLER_IFELSE(
-        [if test "x$ac_use_gas_preprocessor" = "xyes"; then
-           AC_MSG_RESULT([yes (with gas-preprocessor)])
-         else
-           AC_MSG_RESULT([yes])
-         fi
-         simd_arch=aarch64],
-        [AC_MSG_RESULT([no])
-         with_simd=no])
-      if test "x${with_simd}" = "xno"; then
-        if test "x${require_simd}" = "xyes"; then
-          AC_MSG_ERROR([SIMD support can't be enabled.])
-        else
-          AC_MSG_WARN([SIMD support can't be enabled.  Performance will suffer.])
-        fi
-      fi
-      ;;
-    mips*)
-      AC_MSG_RESULT([yes (mips)])
-      AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
-      AC_CHECK_COMPATIBLE_MIPS_ASSEMBLER_IFELSE(
-        [AC_MSG_RESULT([yes])
-         simd_arch=mips],
-        [AC_MSG_RESULT([no])
-         with_simd=no])
-      if test "x${with_simd}" = "xno"; then
-        if test "x${require_simd}" = "xyes"; then
-          AC_MSG_ERROR([SIMD support can't be enabled.])
-        else
-          AC_MSG_WARN([SIMD support can't be enabled.  Performance will suffer.])
-        fi
-      fi
-      ;;
-    powerpc*)
-      AC_MSG_RESULT([yes (powerpc)])
-      simd_arch=powerpc
-      ;;
-    *)
-      AC_MSG_RESULT([no ("$host_cpu")])
-      with_simd=no;
-      if test "x${require_simd}" = "xyes"; then
-        AC_MSG_ERROR([SIMD support not available for this CPU.])
-      else
-        AC_MSG_WARN([SIMD support not available for this CPU.  Performance will suffer.])
-      fi
-      ;;
-  esac
-
-  if test "x${with_simd}" != "xno"; then
-    AC_DEFINE([WITH_SIMD], [1], [Use accelerated SIMD routines.])
-  fi
-else
-  RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-simd"
-fi
-
-AM_CONDITIONAL([WITH_SIMD], [test "x$with_simd" != "xno"])
-AM_CONDITIONAL([WITH_SSE_FLOAT_DCT], [test "x$simd_arch" = "xx86_64" -o "x$simd_arch" = "xi386"])
-AM_CONDITIONAL([SIMD_I386], [test "x$simd_arch" = "xi386"])
-AM_CONDITIONAL([SIMD_X86_64], [test "x$simd_arch" = "xx86_64"])
-AM_CONDITIONAL([SIMD_ARM], [test "x$simd_arch" = "xarm"])
-AM_CONDITIONAL([SIMD_ARM_64], [test "x$simd_arch" = "xaarch64"])
-AM_CONDITIONAL([SIMD_MIPS], [test "x$simd_arch" = "xmips"])
-AM_CONDITIONAL([SIMD_POWERPC], [test "x$simd_arch" = "xpowerpc"])
-AM_CONDITIONAL([X86_64], [test "x$host_cpu" = "xx86_64" -o "x$host_cpu" = "xamd64"])
-AM_CONDITIONAL([WITH_TURBOJPEG], [test "x$with_turbojpeg" != "xno"])
-
-AC_ARG_VAR(PKGNAME, [distribution package name (default: mozjpeg)])
-if test "x$PKGNAME" = "x"; then
-  PKGNAME=$PACKAGE_NAME
-fi
-AC_SUBST(PKGNAME)
-
-case "$host_cpu" in
-  x86_64)
-    RPMARCH=x86_64
-    DEBARCH=amd64
-    ;;
-  i*86 | x86 | ia32)
-    RPMARCH=i386
-    DEBARCH=i386
-    ;;
-esac
-
-AC_SUBST(RPMARCH)
-AC_SUBST(RPM_CONFIG_ARGS)
-AC_SUBST(DEBARCH)
-AC_SUBST(BUILD)
-AC_DEFINE_UNQUOTED([BUILD], "$BUILD", [libjpeg-turbo build number])
-
-# NOTE: autoheader automatically modifies the input file of the first
-# invocation of AC_CONFIG_HEADERS, so we put config.h first to prevent
-# jconfig.h.in from being clobbered.  config.h is used only internally, whereas
-# jconfig.h contains macros that are relevant to external programs (macros that
-# specify which features were built into the library.)
-AC_CONFIG_HEADERS([config.h])
-AC_CONFIG_HEADERS([jconfig.h])
-AC_CONFIG_HEADERS([jconfigint.h])
-AC_CONFIG_FILES([pkgscripts/mozjpeg.spec.tmpl:release/mozjpeg.spec.in])
-AC_CONFIG_FILES([pkgscripts/makecygwinpkg.tmpl:release/makecygwinpkg.in])
-AC_CONFIG_FILES([pkgscripts/makedpkg.tmpl:release/makedpkg.in])
-AC_CONFIG_FILES([pkgscripts/makemacpkg.tmpl:release/makemacpkg.in])
-AC_CONFIG_FILES([pkgscripts/uninstall.tmpl:release/uninstall.in])
-if test "x$with_turbojpeg" != "xno"; then
-  AC_CONFIG_FILES([tjbenchtest])
-fi
-if test "x$with_java" = "xyes"; then
-  AC_CONFIG_FILES([tjbenchtest.java])
-  AC_CONFIG_FILES([tjexampletest])
-fi
-AC_CONFIG_FILES([libjpeg.map])
-AC_CONFIG_FILES([Makefile simd/Makefile])
-AC_CONFIG_FILES([java/Makefile])
-AC_CONFIG_FILES([md5/Makefile])
-AC_OUTPUT

croptest.in

@@ -0,0 +1,95 @@
+#!/bin/bash
+
+set -u
+set -e
+trap onexit INT
+trap onexit TERM
+trap onexit EXIT
+
+onexit()
+{
+	if [ -d $OUTDIR ]; then
+		rm -rf $OUTDIR
+	fi
+}
+
+runme()
+{
+	echo \*\*\* $*
+	$*
+}
+
+IMAGE=vgl_6548_0026a.bmp
+WIDTH=128
+HEIGHT=95
+IMGDIR=@CMAKE_CURRENT_SOURCE_DIR@/testimages
+OUTDIR=`mktemp -d /tmp/__croptest_output.XXXXXX`
+EXEDIR=@CMAKE_CURRENT_BINARY_DIR@
+
+if [ -d $OUTDIR ]; then
+	rm -rf $OUTDIR
+fi
+mkdir -p $OUTDIR
+
+exec >$EXEDIR/croptest.log
+
+echo "============================================================"
+echo "$IMAGE ($WIDTH x $HEIGHT)"
+echo "============================================================"
+echo
+
+for PROGARG in "" -progressive; do
+
+	cp $IMGDIR/$IMAGE $OUTDIR
+	basename=`basename $IMAGE .bmp`
+	echo "------------------------------------------------------------"
+	echo "Generating test images"
+	echo "------------------------------------------------------------"
+	echo
+	runme $EXEDIR/cjpeg $PROGARG -grayscale -outfile $OUTDIR/${basename}_GRAY.jpg $IMGDIR/${basename}.bmp
+	runme $EXEDIR/cjpeg $PROGARG -sample 2x2 -outfile $OUTDIR/${basename}_420.jpg $IMGDIR/${basename}.bmp
+	runme $EXEDIR/cjpeg $PROGARG -sample 2x1 -outfile $OUTDIR/${basename}_422.jpg $IMGDIR/${basename}.bmp
+	runme $EXEDIR/cjpeg $PROGARG -sample 1x2 -outfile $OUTDIR/${basename}_440.jpg $IMGDIR/${basename}.bmp
+	runme $EXEDIR/cjpeg $PROGARG -sample 1x1 -outfile $OUTDIR/${basename}_444.jpg $IMGDIR/${basename}.bmp
+	echo
+
+	for NSARG in "" -nosmooth; do
+
+		for COLORSARG in "" "-colors 256 -dither none -onepass"; do
+
+			for Y in {0..16}; do
+
+				for H in {1..16}; do
+
+					X=$(( (Y*16)%128 ))
+					W=$(( WIDTH-X-7 ))
+					if [ $Y -le 15 ]; then
+						CROPSPEC="${W}x${H}+${X}+${Y}"
+					else
+						Y2=$(( HEIGHT-H ));
+						CROPSPEC="${W}x${H}+${X}+${Y2}"
+					fi
+
+					echo "------------------------------------------------------------"
+					echo $PROGARG $NSARG $COLORSARG -crop $CROPSPEC
+					echo "------------------------------------------------------------"
+					echo
+					for samp in GRAY 420 422 440 444; do
+						$EXEDIR/djpeg $NSARG $COLORSARG -rgb -outfile $OUTDIR/${basename}_${samp}_full.ppm $OUTDIR/${basename}_${samp}.jpg
+						convert -crop $CROPSPEC $OUTDIR/${basename}_${samp}_full.ppm $OUTDIR/${basename}_${samp}_ref.ppm
+						runme $EXEDIR/djpeg $NSARG $COLORSARG -crop $CROPSPEC -rgb -outfile $OUTDIR/${basename}_${samp}.ppm $OUTDIR/${basename}_${samp}.jpg
+						runme cmp $OUTDIR/${basename}_${samp}.ppm $OUTDIR/${basename}_${samp}_ref.ppm
+					done
+					echo
+
+				done
+
+			done
+
+		done
+
+	done
+
+done
+
+echo SUCCESS!

djpeg.1

@@ -1,4 +1,4 @@
-.TH DJPEG 1 "21 November 2014"
+.TH DJPEG 1 "17 June 2024"
 .SH NAME
 djpeg \- decompress a JPEG file to an image file
 .SH SYNOPSIS
@@ -15,8 +15,7 @@ djpeg \- decompress a JPEG file to an image file
 .B djpeg
 decompresses the named JPEG file, or the standard input if no file is named,
 and produces an image file on the standard output.  PBMPLUS (PPM/PGM), BMP,
-GIF, Targa, or RLE (Utah Raster Toolkit) output format can be selected.
-(RLE is supported only if the URT library is available.)
+GIF, or Targa output format can be selected.
 .SH OPTIONS
 All switch names may be abbreviated; for example,
 .B \-grayscale
@@ -29,47 +28,46 @@ Upper and lower case are equivalent (thus
 .B \-BMP
 is the same as
 .BR \-bmp ).
-British spellings are also accepted (e.g.,
+British spellings are also accepted (e.g.
 .BR \-greyscale ),
 though for brevity these are not mentioned below.
 .PP
 The basic switches are:
 .TP
 .BI \-colors " N"
-Reduce image to at most N colors.  This reduces the number of colors used in
-the output image, so that it can be displayed on a colormapped display or
-stored in a colormapped file format.  For example, if you have an 8-bit
-display, you'd need to reduce to 256 or fewer colors.
+Reduce image to at most N colors [legacy feature].  This reduces the number of
+colors used in the output image so that it can be stored in a colormapped file
+format.  This feature cannot be used when decompressing lossless JPEG images.
 .TP
 .BI \-quantize " N"
 Same as
 .BR \-colors .
 .B \-colors
-is the recommended name,
+is the recommended name.
 .B \-quantize
-is provided only for backwards compatibility.
+is provided only for backward compatibility.
 .TP
 .B \-fast
-Select recommended processing options for fast, low quality output.  (The
-default options are chosen for highest quality output.)  Currently, this is
-equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
+Select recommended processing options for low-quality output [legacy feature].
+(The default options are chosen for highest-quality output.)  Currently, this
+is equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.  On
+modern CPUs, these settings have little or no performance benefit and are
+retained solely for backward compatibility.
 .TP
 .B \-grayscale
-Force grayscale output even if JPEG file is color.  Useful for viewing on
-monochrome displays; also,
-.B djpeg
-runs noticeably faster in this mode.
+Force grayscale output even if JPEG file is full-color.  This feature cannot be
+used when decompressing full-color lossless JPEG images.
 .TP
 .B \-rgb
-Force RGB output even if JPEG file is grayscale.
+Force RGB output even if JPEG file is grayscale.  This feature cannot be used
+when decompressing grayscale lossless JPEG images.
 .TP
 .BI \-scale " M/N"
 Scale the output image by a factor M/N.  Currently the scale factor must be
 M/8, where M is an integer between 1 and 16 inclusive, or any reduced fraction
 thereof (such as 1/2, 3/4, etc.)  Scaling is handy if the image is larger than
-your screen; also,
-.B djpeg
-runs much faster when scaling down the output.
+your screen.  This feature cannot be used when decompressing lossless JPEG
+images.
 .TP
 .B \-bmp
 Select BMP output format (Windows flavor).  8-bit colormapped format is
@@ -78,21 +76,36 @@ emitted if
 or
 .B \-grayscale
 is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
-format is emitted.
+format is emitted.  This format can only be used when decompressing
+8-bit-per-sample JPEG images.
 .TP
 .B \-gif
-Select GIF output format.  Since GIF does not support more than 256 colors,
+Select GIF output format (LZW-compressed) [legacy feature].  Since GIF does not
+support more than 256 colors,
 .B \-colors 256
-is assumed (unless you specify a smaller number of colors).
+is assumed (unless you specify a smaller number of colors).  If you specify
+.BR \-fast,
+the default number of colors is 216.  This format can only be used when
+decompressing 8-bit-per-sample or 12-bit-per-sample lossy JPEG images.
+.TP
+.B \-gif0
+Select GIF output format (uncompressed) [legacy feature].  Since GIF does not
+support more than 256 colors,
+.B \-colors 256
+is assumed (unless you specify a smaller number of colors).  If you specify
+.BR \-fast,
+the default number of colors is 216.  This format can only be used when
+decompressing 8-bit-per-sample or 12-bit-per-sample lossy JPEG images.
 .TP
 .B \-os2
-Select BMP output format (OS/2 1.x flavor).  8-bit colormapped format is
-emitted if
+Select BMP output format (OS/2 1.x flavor) [legacy feature].  8-bit colormapped
+format is emitted if
 .B \-colors
 or
 .B \-grayscale
 is specified, or if the JPEG file is grayscale; otherwise, 24-bit full-color
-format is emitted.
+format is emitted.  This format can only be used when decompressing
+8-bit-per-sample JPEG images.
 .TP
 .B \-pnm
 Select PBMPLUS (PPM/PGM) output format (this is the default format).
@@ -100,67 +113,76 @@ PGM is emitted if the JPEG file is grayscale or if
 .B \-grayscale
 is specified; otherwise PPM is emitted.
 .TP
-.B \-rle
-Select RLE output format.  (Requires URT library.)
-.TP
 .B \-targa
-Select Targa output format.  Grayscale format is emitted if the JPEG file is
-grayscale or if
+Select Targa output format [legacy feature].  Grayscale format is emitted if
+the JPEG file is grayscale or if
 .B \-grayscale
 is specified; otherwise, colormapped format is emitted if
 .B \-colors
-is specified; otherwise, 24-bit full-color format is emitted.
+is specified; otherwise, 24-bit full-color format is emitted.  This format can
+only be used when decompressing 8-bit-per-sample JPEG images.
 .PP
 Switches for advanced users:
 .TP
 .B \-dct int
-Use integer DCT method (default).
+Use accurate 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.
+Use less accurate integer DCT method [legacy feature].
+When the Independent JPEG Group's software was first released in 1991, the
+decompression time for a 1-megapixel JPEG image on a mainstream PC was measured
+in minutes.  Thus, the \fBfast\fR integer DCT algorithm provided noticeable
+performance benefits.  On modern CPUs running libjpeg-turbo, however, the
+decompression time for a 1-megapixel JPEG image is measured in milliseconds,
+and thus the performance benefits of the \fBfast\fR algorithm are much less
+noticeable.  On modern x86/x86-64 CPUs that support AVX2 instructions, the
+\fBfast\fR and \fBint\fR methods have similar performance.  On other types of
+CPUs, the \fBfast\fR method is generally about 5-15% faster than the \fBint\fR
+method.
+
+If the JPEG image was compressed using a quality level of 85 or below, then
+there should be little or no perceptible quality difference between the two
+algorithms.  When decompressing images that were compressed using quality
+levels above 85, however, the difference between the \fBfast\fR and \fBint\fR
+methods becomes more pronounced.  With images compressed using quality=97, for
+instance, the \fBfast\fR method incurs generally about a 4-6 dB loss in PSNR
+relative to the \fBint\fR method, but this can be larger for some images.  If
+you can avoid it, do not use the \fBfast\fR 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
-more accurate results than the int method, and it is much slower.  The float
-method may also give different results on different machines due to varying
-roundoff behavior, whereas the integer methods should give the same results on
-all machines.
+Use floating-point DCT method [legacy feature].
+The \fBfloat\fR method does not produce significantly more accurate results
+than the \fBint\fR method, and it is much slower.  The \fBfloat\fR method may
+also give different results on different machines due to varying roundoff
+behavior, whereas the integer methods should give the same results on all
+machines.
 .TP
 .B \-dither fs
-Use Floyd-Steinberg dithering in color quantization.
+Use Floyd-Steinberg dithering when quantizing colors [legacy feature].
 .TP
 .B \-dither ordered
-Use ordered dithering in color quantization.
+Use ordered dithering when quantizing colors [legacy feature].
 .TP
 .B \-dither none
-Do not use dithering in color quantization.
-By default, Floyd-Steinberg dithering is applied when quantizing colors; this
-is slow but usually produces the best results.  Ordered dither is a compromise
-between speed and quality; no dithering is fast but usually looks awful.  Note
-that these switches have no effect unless color quantization is being done.
-Ordered dither is only available in
+Do not use dithering when quantizing colors [legacy feature].  By default,
+Floyd-Steinberg dithering is applied when quantizing colors.  This is slower
+but usually produces the best results.  Ordered dithering is a compromise
+between speed and quality.  No dithering is faster but usually looks awful.
+Note that these switches have no effect unless color quantization is being
+done.  Ordered dithering 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
-predefined set of colors to be used.  The
+Quantize to the colors used in the specified image file [legacy feature].  This
+is useful for producing multiple files with identical color maps, or for
+forcing a predefined set of colors to be used.  The
 .I file
 must be a GIF or PPM file. This option overrides
 .B \-colors
@@ -171,21 +193,34 @@ and
 Use a faster, lower-quality upsampling routine.
 .TP
 .B \-onepass
-Use one-pass instead of two-pass color quantization.  The one-pass method is
-faster and needs less memory, but it produces a lower-quality image.
+Use one-pass instead of two-pass color quantization [legacy feature].  The
+one-pass method needs less memory, but it produces a lower-quality image.
 .B \-onepass
-is ignored unless you also say
+is ignored unless you also specify
 .B \-colors
 .IR N .
-Also, the one-pass method is always used for grayscale output (the two-pass
-method is no improvement then).
+Also, the one-pass method is always used for grayscale output.  (The two-pass
+method has no improvement in that case.)
 .TP
 .BI \-maxmemory " N"
 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, temporary files will be used.
+selects 4000000 bytes.  If more space is needed, an error will occur.
+.TP
+.BI \-maxscans " N"
+Abort if the JPEG image contains more than
+.I N
+scans.  This feature demonstrates a method by which applications can guard
+against denial-of-service attacks instigated by specially-crafted malformed
+JPEG images containing numerous scans with missing image data or image data
+consisting only of "EOB runs" (a feature of progressive JPEG images that allows
+potentially hundreds of thousands of adjoining zero-value pixels to be
+represented using only a few bytes.)  Attempting to decompress such malformed
+JPEG images can cause excessive CPU activity, since the decompressor must fully
+process each scan (even if the scan is corrupt) before it can proceed to the
+next scan.
 .TP
 .BI \-outfile " name"
 Send output image to the named file, not to standard output.
@@ -194,6 +229,28 @@ Send output image to the named file, not to standard output.
 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 \-report
+Report decompression progress.
+.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
+.BI \-strict
+Treat all warnings as fatal.  This feature also demonstrates a method by which
+applications can guard against attacks instigated by specially-crafted
+malformed JPEG images.  Enabling this option will cause the decompressor to
+abort if the JPEG image contains incomplete or corrupt image data.
+.TP
 .B \-verbose
 Enable debug printout.  More
 .BR \-v 's
@@ -207,42 +264,13 @@ Same as
 Print version information and exit.
 .SH EXAMPLES
 .LP
-This example decompresses the JPEG file foo.jpg, quantizes it to
-256 colors, and saves the output in 8-bit BMP format in foo.bmp:
+This example decompresses the JPEG file foo.jpg and saves the output in 8-bit
+BMP format in foo.bmp:
 .IP
-.B djpeg \-colors 256 \-bmp
+.B djpeg \-bmp
 .I foo.jpg
 .B >
 .I foo.bmp
-.SH HINTS
-To get a quick preview of an image, use the
-.B \-grayscale
-and/or
-.B \-scale
-switches.
-.B \-grayscale \-scale 1/8
-is the fastest case.
-.PP
-Several options are available that trade off image quality to gain speed.
-.B \-fast
-turns on the recommended settings.
-.PP
-.B \-dct fast
-and/or
-.B \-nosmooth
-gain speed at a small sacrifice in quality.
-When producing a color-quantized image,
-.B \-onepass \-dither ordered
-is fast but much lower quality than the default behavior.
-.B \-dither none
-may give acceptable results in two-pass mode, but is seldom tolerable in
-one-pass mode.
-.PP
-If you are fortunate enough to have very fast floating point hardware,
-\fB\-dct float\fR may be even faster than \fB\-dct fast\fR.  But on most
-machines \fB\-dct float\fR is slower than \fB\-dct int\fR; in this case it is
-not worth using, because its theoretical accuracy advantage is too small to be
-significant in practice.
 .SH ENVIRONMENT
 .TP
 .B JPEGMEM
@@ -271,8 +299,3 @@ Independent JPEG Group
 This file was modified by The libjpeg-turbo Project to include only information
 relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
 features not present in libjpeg.
-.SH BUGS
-To avoid the Unisys LZW patent,
-.B djpeg
-produces uncompressed GIF files.  These are larger than they should be, but
-are readable by standard GIF decoders.

djpeg.c

@@ -3,9 +3,12 @@
  *
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1997, Thomas G. Lane.
+ * Modified 2013-2019 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2010-2011, 2013-2014, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README file.
+ * Copyright (C) 2010-2011, 2013-2017, 2019-2020, 2022-2024, D. R. Commander.
+ * 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.
@@ -25,26 +28,20 @@
  * works regardless of which command line style is used.
  */
 
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_DEPRECATE
+#endif
+
 #include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
 #include "jversion.h"           /* for version message */
 #include "jconfigint.h"
 
 #include <ctype.h>              /* to declare isprint() */
 
-#ifdef USE_CCOMMAND             /* command-line reader for Macintosh */
-#ifdef __MWERKS__
-#include <SIOUX.h>              /* Metrowerks needs this */
-#include <console.h>            /* ... and this */
-#endif
-#ifdef THINK_C
-#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"
@@ -60,13 +57,13 @@ static const char * const cdjpeg_message_table[] = {
  */
 
 typedef enum {
-        FMT_BMP,                /* BMP format (Windows flavor) */
-        FMT_GIF,                /* GIF format */
-        FMT_OS2,                /* BMP format (OS/2 flavor) */
-        FMT_PPM,                /* PPM/PGM (PBMPLUS formats) */
-        FMT_RLE,                /* RLE format */
-        FMT_TARGA,              /* Targa format */
-        FMT_TIFF                /* TIFF format */
+  FMT_BMP,                      /* BMP format (Windows flavor) */
+  FMT_GIF,                      /* GIF format (LZW-compressed) */
+  FMT_GIF0,                     /* GIF format (uncompressed) */
+  FMT_OS2,                      /* BMP format (OS/2 flavor) */
+  FMT_PPM,                      /* PPM/PGM (PBMPLUS formats) */
+  FMT_TARGA,                    /* Targa format */
+  FMT_TIFF                      /* TIFF format */
 } IMAGE_FORMATS;
 
 #ifndef DEFAULT_FMT             /* so can override from CFLAGS in Makefile */
@@ -85,14 +82,21 @@ static IMAGE_FORMATS requested_fmt;
  */
 
 
-static const char * progname;   /* program name for error messages */
-static char * outfilename;      /* for -outfile switch */
-boolean memsrc;  /* for -memsrc switch */
+static const char *progname;    /* program name for error messages */
+static char *icc_filename;      /* for -icc switch */
+static JDIMENSION max_scans;    /* for -maxscans switch */
+static char *outfilename;       /* for -outfile switch */
+static boolean memsrc;          /* for -memsrc switch */
+static boolean report;          /* for -report switch */
+static boolean skip, crop;
+static JDIMENSION skip_start, skip_end;
+static JDIMENSION crop_x, crop_y, crop_width, crop_height;
+static boolean strict;          /* for -strict switch */
 #define INPUT_BUF_SIZE  4096
 
 
 LOCAL(void)
-usage (void)
+usage(void)
 /* complain about bad command line */
 {
   fprintf(stderr, "usage: %s [switches] ", progname);
@@ -103,8 +107,8 @@ usage (void)
 #endif
 
   fprintf(stderr, "Switches (names may be abbreviated):\n");
-  fprintf(stderr, "  -colors N      Reduce image to no more than N colors\n");
-  fprintf(stderr, "  -fast          Fast, low-quality processing\n");
+  fprintf(stderr, "  -colors N      Reduce image to no more than N colors [legacy feature]\n");
+  fprintf(stderr, "  -fast          Low-quality processing [legacy feature]\n");
   fprintf(stderr, "  -grayscale     Force grayscale output\n");
   fprintf(stderr, "  -rgb           Force RGB output\n");
   fprintf(stderr, "  -rgb565        Force RGB565 output\n");
@@ -116,54 +120,58 @@ usage (void)
           (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
 #endif
 #ifdef GIF_SUPPORTED
-  fprintf(stderr, "  -gif           Select GIF output format%s\n",
+  fprintf(stderr, "  -gif           Select GIF output format (LZW-compressed)%s [legacy feature]\n",
           (DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
+  fprintf(stderr, "  -gif0          Select GIF output format (uncompressed)%s [legacy feature]\n",
+          (DEFAULT_FMT == FMT_GIF0 ? " (default)" : ""));
 #endif
 #ifdef BMP_SUPPORTED
-  fprintf(stderr, "  -os2           Select BMP output format (OS/2 style)%s\n",
+  fprintf(stderr, "  -os2           Select BMP output format (OS/2 style)%s [legacy feature]\n",
           (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)" : ""));
 #endif
-#ifdef RLE_SUPPORTED
-  fprintf(stderr, "  -rle           Select Utah RLE output format%s\n",
-          (DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
-#endif
 #ifdef TARGA_SUPPORTED
-  fprintf(stderr, "  -targa         Select Targa output format%s\n",
+  fprintf(stderr, "  -targa         Select Targa output format%s [legacy feature]\n",
           (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",
+  fprintf(stderr, "  -dct int       Use accurate integer DCT method%s\n",
           (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
 #endif
 #ifdef DCT_IFAST_SUPPORTED
-  fprintf(stderr, "  -dct fast      Use fast integer DCT (less accurate)%s\n",
+  fprintf(stderr, "  -dct fast      Use less accurate integer DCT method [legacy feature]%s\n",
           (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
 #endif
 #ifdef DCT_FLOAT_SUPPORTED
-  fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
+  fprintf(stderr, "  -dct float     Use floating-point DCT method [legacy feature]%s\n",
           (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, "  -dither fs     Use Floyd-Steinberg dithering when quantizing colors (default)\n");
+  fprintf(stderr, "                 [legacy feature]\n");
+  fprintf(stderr, "  -dither none   Don't use dithering when quantizing colors [legacy feature]\n");
+  fprintf(stderr, "  -dither ordered  Use ordered dithering when quantizing colors\n");
+  fprintf(stderr, "                   [legacy feature]\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");
+  fprintf(stderr, "  -map FILE      Quantize to colors used in named image file [legacy feature]\n");
 #endif
-  fprintf(stderr, "  -nosmooth      Don't use high-quality upsampling\n");
+  fprintf(stderr, "  -nosmooth      Use faster, lower-quality upsampling\n");
 #ifdef QUANT_1PASS_SUPPORTED
-  fprintf(stderr, "  -onepass       Use 1-pass quantization (fast, low quality)\n");
+  fprintf(stderr, "  -onepass       Use 1-pass color quantization (low quality) [legacy feature]\n");
 #endif
   fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
+  fprintf(stderr, "  -maxscans N    Maximum number of scans to allow in input file\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, "  -report        Report decompression progress\n");
+  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, "  -strict        Treat all warnings as fatal\n");
   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
   fprintf(stderr, "  -version       Print version information and exit\n");
   exit(EXIT_FAILURE);
@@ -171,8 +179,8 @@ usage (void)
 
 
 LOCAL(int)
-parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
-                int last_file_arg_seen, boolean for_real)
+parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
+               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;
@@ -183,12 +191,18 @@ 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 */
+  icc_filename = NULL;
+  max_scans = 0;
   outfilename = NULL;
   memsrc = FALSE;
+  report = FALSE;
+  skip = FALSE;
+  crop = FALSE;
+  strict = FALSE;
   cinfo->err->trace_level = 0;
 
   /* Scan command line options, adjust parameters */
@@ -206,7 +220,7 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
     arg++;                      /* advance past switch marker character */
 
     if (keymatch(arg, "bmp", 1)) {
-      /* BMP output format. */
+      /* BMP output format (Windows flavor). */
       requested_fmt = FMT_BMP;
 
     } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
@@ -252,10 +266,11 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
       /* 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",
                 PACKAGE_NAME, VERSION, BUILD);
-        fprintf(stderr, "%s\n\n", JCOPYRIGHT);
+        fprintf(stderr, JCOPYRIGHT1);
+        fprintf(stderr, JCOPYRIGHT2 "\n");
         fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
                 JVERSION);
         printed_version = TRUE;
@@ -271,16 +286,21 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
       /* 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->dct_method = JDCT_FASTEST;
       cinfo->do_fancy_upsampling = FALSE;
 
     } else if (keymatch(arg, "gif", 1)) {
-      /* GIF output format. */
+      /* GIF output format (LZW-compressed). */
       requested_fmt = FMT_GIF;
 
-    } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
+    } else if (keymatch(arg, "gif0", 4)) {
+      /* GIF output format (uncompressed). */
+      requested_fmt = FMT_GIF0;
+
+    } else if (keymatch(arg, "grayscale", 2) ||
+               keymatch(arg, "greyscale", 2)) {
       /* Force monochrome output. */
       cinfo->out_color_space = JCS_GRAYSCALE;
 
@@ -292,19 +312,31 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
       /* 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];
+#ifdef SAVE_MARKERS_SUPPORTED
+      jpeg_save_markers(cinfo, JPEG_APP0 + 2, 0xFFFF);
+#endif
+
     } else if (keymatch(arg, "map", 3)) {
       /* Quantize to a color map taken from an input file. */
       if (++argn >= argc)       /* advance to next argument */
         usage();
       if (for_real) {           /* too expensive to do twice! */
 #ifdef QUANT_2PASS_SUPPORTED    /* otherwise can't quantize to supplied map */
-        FILE * mapfile;
+        FILE *mapfile;
 
         if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
           fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
           exit(EXIT_FAILURE);
         }
-        read_color_map(cinfo, mapfile);
+        if (cinfo->data_precision == 12)
+          read_color_map_12(cinfo, mapfile);
+        else
+          read_color_map(cinfo, mapfile);
         fclose(mapfile);
         cinfo->quantize_colors = TRUE;
 #else
@@ -325,6 +357,12 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
         lval *= 1000L;
       cinfo->mem->max_memory_to_use = lval * 1000L;
 
+    } else if (keymatch(arg, "maxscans", 4)) {
+      if (++argn >= argc)       /* advance to next argument */
+        usage();
+      if (sscanf(argv[argn], "%u", &max_scans) != 1)
+        usage();
+
     } else if (keymatch(arg, "nosmooth", 3)) {
       /* Suppress fancy upsampling */
       cinfo->do_fancy_upsampling = FALSE;
@@ -345,30 +383,53 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
 
     } 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. */
       requested_fmt = FMT_PPM;
 
-    } else if (keymatch(arg, "rle", 1)) {
-      /* RLE output format. */
-      requested_fmt = FMT_RLE;
+    } else if (keymatch(arg, "report", 2)) {
+      report = TRUE;
 
     } else if (keymatch(arg, "scale", 1)) {
       /* Scale the output image by a fraction M/N. */
       if (++argn >= argc)       /* advance to next argument */
         usage();
-      if (sscanf(argv[argn], "%d/%d",
+      if (sscanf(argv[argn], "%u/%u",
                  &cinfo->scale_num, &cinfo->scale_denom) != 2)
         usage();
 
+    } else if (keymatch(arg, "skip", 2)) {
+      int temp_start = -1, temp_end = -1;
+      if (++argn >= argc)
+        usage();
+      if (sscanf(argv[argn], "%d,%d", &temp_start, &temp_end) != 2 ||
+          temp_start < 0 || temp_end < 0 || temp_start > temp_end)
+        usage();
+      skip = TRUE;
+      skip_start = temp_start;
+      skip_end = temp_end;
+
+    } else if (keymatch(arg, "crop", 2)) {
+      int temp_width = -1, temp_height = -1, temp_x = -1, temp_y = -1;
+      char c;
+      if (++argn >= argc)
+        usage();
+      if (sscanf(argv[argn], "%d%c%d+%d+%d", &temp_width, &c, &temp_height,
+                 &temp_x, &temp_y) != 5 ||
+          (c != 'X' && c != 'x') || temp_width < 1 || temp_height < 1 ||
+          temp_x < 0 || temp_y < 0)
+        usage();
+      crop = TRUE;
+      crop_width = temp_width;
+      crop_height = temp_height;
+      crop_x = temp_x;
+      crop_y = temp_y;
+
+    } else if (keymatch(arg, "strict", 2)) {
+      strict = TRUE;
+
     } else if (keymatch(arg, "targa", 1)) {
       /* Targa output format. */
       requested_fmt = FMT_TARGA;
@@ -390,25 +451,25 @@ 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--;
-  return GETJOCTET(*datasrc->next_input_byte++);
+  return *datasrc->next_input_byte++;
 }
 
 
 METHODDEF(boolean)
-print_text_marker (j_decompress_ptr cinfo)
+print_text_marker(j_decompress_ptr cinfo)
 {
   boolean traceit = (cinfo->err->trace_level >= 1);
-  INT32 length;
+  long length;
   unsigned int ch;
   unsigned int lastch = 0;
 
@@ -418,10 +479,10 @@ print_text_marker (j_decompress_ptr cinfo)
 
   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 */
       fprintf(stderr, "APP%d, length %ld:\n",
-              cinfo->unread_marker - JPEG_APP0, (long) length);
+              cinfo->unread_marker - JPEG_APP0, (long)length);
   }
 
   while (--length >= 0) {
@@ -455,31 +516,37 @@ print_text_marker (j_decompress_ptr cinfo)
 }
 
 
+METHODDEF(void)
+my_emit_message(j_common_ptr cinfo, int msg_level)
+{
+  if (msg_level < 0) {
+    /* Treat warning as fatal */
+    cinfo->err->error_exit(cinfo);
+  } else {
+    if (cinfo->err->trace_level >= msg_level)
+      cinfo->err->output_message(cinfo);
+  }
+}
+
+
 /*
  * The main program.
  */
 
 int
-main (int argc, char **argv)
+main(int argc, char **argv)
 {
   struct jpeg_decompress_struct cinfo;
   struct jpeg_error_mgr jerr;
-#ifdef PROGRESS_REPORT
   struct cdjpeg_progress_mgr progress;
-#endif
   int file_index;
   djpeg_dest_ptr dest_mgr = NULL;
-  FILE * input_file;
-  FILE * output_file;
+  FILE *input_file;
+  FILE *output_file;
   unsigned char *inbuffer = NULL;
   unsigned long insize = 0;
   JDIMENSION num_scanlines;
 
-  /* On Mac, fetch a command line. */
-#ifdef USE_CCOMMAND
-  argc = ccommand(&argv);
-#endif
-
   progname = argv[0];
   if (progname == NULL || progname[0] == 0)
     progname = "djpeg";         /* in case C library doesn't provide it */
@@ -499,7 +566,7 @@ main (int argc, char **argv)
    * but don't try to override APP0 or APP14 this way (see libjpeg.txt).
    */
   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);
 
   /* Scan command line to find file names. */
   /* It is convenient to use just one switch-parsing routine, but the switch
@@ -511,17 +578,20 @@ main (int argc, char **argv)
 
   file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
 
+  if (strict)
+    jerr.emit_message = my_emit_message;
+
 #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);
       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);
       usage();
@@ -529,7 +599,7 @@ main (int argc, char **argv)
   }
 #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();
   }
@@ -557,12 +627,13 @@ main (int argc, char **argv)
     output_file = write_stdout();
   }
 
-#ifdef PROGRESS_REPORT
-  start_progress_monitor((j_common_ptr) &cinfo, &progress);
-#endif
+  if (report || max_scans != 0) {
+    start_progress_monitor((j_common_ptr)&cinfo, &progress);
+    progress.report = report;
+    progress.max_scans = max_scans;
+  }
 
   /* Specify data source for decompression */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
   if (memsrc) {
     size_t nbytes;
     do {
@@ -571,7 +642,7 @@ main (int argc, char **argv)
         fprintf(stderr, "%s: memory allocation failure\n", progname);
         exit(EXIT_FAILURE);
       }
-      nbytes = JFREAD(input_file, &inbuffer[insize], INPUT_BUF_SIZE);
+      nbytes = fread(&inbuffer[insize], 1, INPUT_BUF_SIZE, input_file);
       if (nbytes < INPUT_BUF_SIZE && ferror(input_file)) {
         if (file_index < argc)
           fprintf(stderr, "%s: can't read from %s\n", progname,
@@ -584,11 +655,10 @@ main (int argc, char **argv)
     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);
@@ -599,25 +669,37 @@ main (int argc, char **argv)
   switch (requested_fmt) {
 #ifdef BMP_SUPPORTED
   case FMT_BMP:
-    dest_mgr = jinit_write_bmp(&cinfo, FALSE);
+    dest_mgr = jinit_write_bmp(&cinfo, FALSE, TRUE);
     break;
   case FMT_OS2:
-    dest_mgr = jinit_write_bmp(&cinfo, TRUE);
+    dest_mgr = jinit_write_bmp(&cinfo, TRUE, TRUE);
     break;
 #endif
 #ifdef GIF_SUPPORTED
   case FMT_GIF:
-    dest_mgr = jinit_write_gif(&cinfo);
+    if (cinfo.data_precision == 16)
+      ERREXIT1(&cinfo, JERR_BAD_PRECISION, cinfo.data_precision);
+    else if (cinfo.data_precision == 12)
+      dest_mgr = j12init_write_gif(&cinfo, TRUE);
+    else
+      dest_mgr = jinit_write_gif(&cinfo, TRUE);
+    break;
+  case FMT_GIF0:
+    dest_mgr = jinit_write_gif(&cinfo, FALSE);
     break;
 #endif
 #ifdef PPM_SUPPORTED
   case FMT_PPM:
-    dest_mgr = jinit_write_ppm(&cinfo);
-    break;
+    if (cinfo.data_precision == 16)
+#ifdef D_LOSSLESS_SUPPORTED
+      dest_mgr = j16init_write_ppm(&cinfo);
+#else
+      ERREXIT1(&cinfo, JERR_BAD_PRECISION, cinfo.data_precision);
 #endif
-#ifdef RLE_SUPPORTED
-  case FMT_RLE:
-    dest_mgr = jinit_write_rle(&cinfo);
+    else if (cinfo.data_precision == 12)
+      dest_mgr = j12init_write_ppm(&cinfo);
+    else
+      dest_mgr = jinit_write_ppm(&cinfo);
     break;
 #endif
 #ifdef TARGA_SUPPORTED
@@ -632,31 +714,215 @@ main (int argc, char **argv)
   dest_mgr->output_file = output_file;
 
   /* Start decompressor */
-  (void) jpeg_start_decompress(&cinfo);
+  (void)jpeg_start_decompress(&cinfo);
 
-  /* Write output file header */
-  (*dest_mgr->start_output) (&cinfo, dest_mgr);
+  /* Skip rows */
+  if (skip) {
+    JDIMENSION tmp;
 
-  /* 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);
+    /* Check for valid skip_end.  We cannot check this value until after
+     * jpeg_start_decompress() is called.  Note that we have already verified
+     * that skip_start <= skip_end.
+     */
+    if (skip_end > cinfo.output_height - 1) {
+      fprintf(stderr, "%s: skip region exceeds image height %u\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;
+
+    if (cinfo.data_precision == 16)
+      ERREXIT(&cinfo, JERR_NOTIMPL);
+    else if (cinfo.data_precision == 12) {
+      /* Process data */
+      while (cinfo.output_scanline < skip_start) {
+        num_scanlines = jpeg12_read_scanlines(&cinfo, dest_mgr->buffer12,
+                                              dest_mgr->buffer_height);
+        (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
+      }
+      if ((tmp = jpeg12_skip_scanlines(&cinfo, skip_end - skip_start + 1)) !=
+          skip_end - skip_start + 1) {
+        fprintf(stderr, "%s: jpeg12_skip_scanlines() returned %u rather than %u\n",
+                progname, tmp, skip_end - skip_start + 1);
+        exit(EXIT_FAILURE);
+      }
+      while (cinfo.output_scanline < cinfo.output_height) {
+        num_scanlines = jpeg12_read_scanlines(&cinfo, dest_mgr->buffer12,
+                                              dest_mgr->buffer_height);
+        (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
+      }
+    } else {
+      /* 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);
+      }
+      if ((tmp = jpeg_skip_scanlines(&cinfo, skip_end - skip_start + 1)) !=
+          skip_end - skip_start + 1) {
+        fprintf(stderr, "%s: jpeg_skip_scanlines() returned %u rather than %u\n",
+                progname, tmp, skip_end - skip_start + 1);
+        exit(EXIT_FAILURE);
+      }
+      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 ((unsigned long long)crop_x + crop_width > cinfo.output_width ||
+        (unsigned long long)crop_y + crop_height > cinfo.output_height) {
+      fprintf(stderr, "%s: crop dimensions exceed image dimensions %u x %u\n",
+              progname, cinfo.output_width, cinfo.output_height);
+      exit(EXIT_FAILURE);
+    }
+
+    if (cinfo.data_precision == 16)
+      ERREXIT(&cinfo, JERR_NOTIMPL);
+    else if (cinfo.data_precision == 12)
+      jpeg12_crop_scanline(&cinfo, &crop_x, &crop_width);
+    else
+      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;
+
+    if (cinfo.data_precision == 16)
+      ERREXIT(&cinfo, JERR_NOTIMPL);
+    else if (cinfo.data_precision == 12) {
+      /* Process data */
+      if ((tmp = jpeg12_skip_scanlines(&cinfo, crop_y)) != crop_y) {
+        fprintf(stderr, "%s: jpeg12_skip_scanlines() returned %u rather than %u\n",
+                progname, tmp, crop_y);
+        exit(EXIT_FAILURE);
+      }
+      while (cinfo.output_scanline < crop_y + crop_height) {
+        num_scanlines = jpeg12_read_scanlines(&cinfo, dest_mgr->buffer12,
+                                              dest_mgr->buffer_height);
+        (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
+      }
+      if ((tmp =
+           jpeg12_skip_scanlines(&cinfo, cinfo.output_height - crop_y -
+                                         crop_height)) !=
+          cinfo.output_height - crop_y - crop_height) {
+        fprintf(stderr, "%s: jpeg12_skip_scanlines() returned %u rather than %u\n",
+                progname, tmp, cinfo.output_height - crop_y - crop_height);
+        exit(EXIT_FAILURE);
+      }
+    } else {
+      /* Process data */
+      if ((tmp = jpeg_skip_scanlines(&cinfo, crop_y)) != crop_y) {
+        fprintf(stderr, "%s: jpeg_skip_scanlines() returned %u rather than %u\n",
+                progname, tmp, crop_y);
+        exit(EXIT_FAILURE);
+      }
+      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);
+      }
+      if ((tmp =
+           jpeg_skip_scanlines(&cinfo,
+                               cinfo.output_height - crop_y - crop_height)) !=
+          cinfo.output_height - crop_y - crop_height) {
+        fprintf(stderr, "%s: jpeg_skip_scanlines() returned %u rather than %u\n",
+                progname, tmp, cinfo.output_height - crop_y - crop_height);
+        exit(EXIT_FAILURE);
+      }
+    }
+
+  /* Normal full-image decompress */
+  } else {
+    /* Write output file header */
+    (*dest_mgr->start_output) (&cinfo, dest_mgr);
+
+    if (cinfo.data_precision == 16) {
+#ifdef D_LOSSLESS_SUPPORTED
+      /* Process data */
+      while (cinfo.output_scanline < cinfo.output_height) {
+        num_scanlines = jpeg16_read_scanlines(&cinfo, dest_mgr->buffer16,
+                                              dest_mgr->buffer_height);
+        (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
+      }
+#else
+      ERREXIT1(&cinfo, JERR_BAD_PRECISION, cinfo.data_precision);
+#endif
+    } else if (cinfo.data_precision == 12) {
+      /* Process data */
+      while (cinfo.output_scanline < cinfo.output_height) {
+        num_scanlines = jpeg12_read_scanlines(&cinfo, dest_mgr->buffer12,
+                                              dest_mgr->buffer_height);
+        (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
+      }
+    } else {
+      /* 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
   /* Hack: count final pass as done in case finish_output does an extra pass.
    * The library won't have updated completed_passes.
    */
-  progress.pub.completed_passes = progress.pub.total_passes;
-#endif
+  if (report || max_scans != 0)
+    progress.pub.completed_passes = progress.pub.total_passes;
+
+  if (icc_filename != NULL) {
+    FILE *icc_file;
+    JOCTET *icc_profile;
+    unsigned int icc_len;
+
+    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)) {
+      if (fwrite(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);
+      }
+      free(icc_profile);
+      fclose(icc_file);
+    } else if (cinfo.err->msg_code != JWRN_BOGUS_ICC)
+      fprintf(stderr, "%s: no ICC profile data in JPEG file\n", progname);
+  }
 
   /* Finish decompression and release memory.
    * I must do it in this order because output module has allocated memory
    * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
    */
   (*dest_mgr->finish_output) (&cinfo, dest_mgr);
-  (void) jpeg_finish_decompress(&cinfo);
+  (void)jpeg_finish_decompress(&cinfo);
   jpeg_destroy_decompress(&cinfo);
 
   /* Close files, if we opened them */
@@ -665,11 +931,10 @@ main (int argc, char **argv)
   if (output_file != stdout)
     fclose(output_file);
 
-#ifdef PROGRESS_REPORT
-  end_progress_monitor((j_common_ptr) &cinfo);
-#endif
+  if (report || max_scans != 0)
+    end_progress_monitor((j_common_ptr)&cinfo);
 
-  if (memsrc && inbuffer != NULL)
+  if (memsrc)
     free(inbuffer);
 
   /* All done. */

doc/html/annotated.html

@@ -1,18 +1,17 @@
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-<html xmlns="http://www.w3.org/1999/xhtml">
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
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-<meta http-equiv="X-UA-Compatible" content="IE=9"/>
-<meta name="generator" content="Doxygen 1.8.3.1"/>
+<meta http-equiv="X-UA-Compatible" content="IE=11"/>
+<meta name="generator" content="Doxygen 1.9.8"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
 <title>TurboJPEG: Data Structures</title>
 <link href="tabs.css" rel="stylesheet" type="text/css"/>
 <script type="text/javascript" src="jquery.js"></script>
 <script type="text/javascript" src="dynsections.js"></script>
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+<script type="text/javascript" src="search/searchdata.js"></script>
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-  $(document).ready(function() { searchBox.OnSelectItem(0); });
-</script>
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 </head>
@@ -21,10 +20,9 @@
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 <table cellspacing="0" cellpadding="0">
  <tbody>
- <tr style="height: 56px;">
-  <td style="padding-left: 0.5em;">
-   <div id="projectname">TurboJPEG
-   &#160;<span id="projectnumber">1.4</span>
+ <tr id="projectrow">
+  <td id="projectalign">
+   <div id="projectname">TurboJPEG<span id="projectnumber">&#160;3.0.1</span>
    </div>
   </td>
  </tr>
@@ -32,73 +30,60 @@
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-<!-- Generated by Doxygen 1.8.3.1 -->
+<!-- Generated by Doxygen 1.9.8 -->
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-var searchBox = new SearchBox("searchBox", "search",false,'Search');
+/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
+var searchBox = new SearchBox("searchBox", "search/",'.html');
+/* @license-end */
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-  <div id="navrow1" class="tabs">
-    <ul class="tablist">
-      <li><a href="index.html"><span>Main&#160;Page</span></a></li>
-      <li><a href="modules.html"><span>Modules</span></a></li>
-      <li class="current"><a href="annotated.html"><span>Data&#160;Structures</span></a></li>
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-      <li class="current"><a href="annotated.html"><span>Data&#160;Structures</span></a></li>
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-      <li><a href="functions.html"><span>Data&#160;Fields</span></a></li>
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+<script type="text/javascript" src="menudata.js"></script>
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+$(function() {
+  initMenu('',true,false,'search.php','Search');
+  $(document).ready(function() { init_search(); });
+});
+/* @license-end */
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+<div id="main-nav"></div>
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      onmouseover="return searchBox.OnSearchSelectShow()"
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+</div>
 
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+<div class="SRStatus" id="NoMatches">No Matches</div>
+</div>
+</div>
+</div>
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 <div class="header">
-  <div class="headertitle">
-<div class="title">Data Structures</div>  </div>
+  <div class="headertitle"><div class="title">Data Structures</div></div>
 </div><!--header-->
 <div class="contents">
 <div class="textblock">Here are the data structures with brief descriptions:</div><div class="directory">
 <table class="directory">
-<tr id="row_0_" class="even"><td class="entry"><img src="ftv2node.png" alt="o" width="16" height="22" /><img src="ftv2cl.png" alt="C" width="24" height="22" /><a class="el" href="structtjregion.html" target="_self">tjregion</a></td><td class="desc">Cropping region</td></tr>
-<tr id="row_1_"><td class="entry"><img src="ftv2node.png" alt="o" width="16" height="22" /><img src="ftv2cl.png" alt="C" width="24" height="22" /><a class="el" href="structtjscalingfactor.html" target="_self">tjscalingfactor</a></td><td class="desc">Scaling factor</td></tr>
-<tr id="row_2_" class="even"><td class="entry"><img src="ftv2lastnode.png" alt="\" width="16" height="22" /><img src="ftv2cl.png" alt="C" width="24" height="22" /><a class="el" href="structtjtransform.html" target="_self">tjtransform</a></td><td class="desc">Lossless transform</td></tr>
+<tr id="row_0_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="structtjregion.html" target="_self">tjregion</a></td><td class="desc">Cropping region </td></tr>
+<tr id="row_1_" class="odd"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="structtjscalingfactor.html" target="_self">tjscalingfactor</a></td><td class="desc">Scaling factor </td></tr>
+<tr id="row_2_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="structtjtransform.html" target="_self">tjtransform</a></td><td class="desc">Lossless transform </td></tr>
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+Generated by&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.8
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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+<meta http-equiv="X-UA-Compatible" content="IE=11"/>
+<meta name="generator" content="Doxygen 1.9.8"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
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+<script type="text/javascript" src="search/searchdata.js"></script>
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-  $(document).ready(function() { searchBox.OnSelectItem(0); });
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@@ -21,10 +20,9 @@
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- <tr style="height: 56px;">
-  <td style="padding-left: 0.5em;">
-   <div id="projectname">TurboJPEG
-   &#160;<span id="projectnumber">1.4</span>
+ <tr id="projectrow">
+  <td id="projectalign">
+   <div id="projectname">TurboJPEG<span id="projectnumber">&#160;3.0.1</span>
    </div>
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@@ -32,75 +30,59 @@
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+<!-- Generated by Doxygen 1.9.8 -->
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+/* @license-end */
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-<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Groups</a></div>
+</div>
 
 <!-- iframe showing the search results (closed by default) -->
 <div id="MSearchResultsWindow">
-<iframe src="javascript:void(0)" frameborder="0" 
-        name="MSearchResults" id="MSearchResults">
-</iframe>
+<div id="MSearchResults">
+<div class="SRPage">
+<div id="SRIndex">
+<div id="SRResults"></div>
+<div class="SRStatus" id="Loading">Loading...</div>
+<div class="SRStatus" id="Searching">Searching...</div>
+<div class="SRStatus" id="NoMatches">No Matches</div>
+</div>
+</div>
+</div>
 </div>
 
 <div class="header">
-  <div class="headertitle">
-<div class="title">Data Structure Index</div>  </div>
+  <div class="headertitle"><div class="title">Data Structure Index</div></div>
 </div><!--header-->
 <div class="contents">
 <div class="qindex"><a class="qindex" href="#letter_T">T</a></div>
-<table style="margin: 10px; white-space: nowrap;" align="center" width="95%" border="0" cellspacing="0" cellpadding="0">
-<tr><td rowspan="2" valign="bottom"><a name="letter_T"></a><table border="0" cellspacing="0" cellpadding="0"><tr><td><div class="ah">&#160;&#160;T&#160;&#160;</div></td></tr></table>
-</td><td valign="top"><a class="el" href="structtjscalingfactor.html">tjscalingfactor</a>&#160;&#160;&#160;</td><td valign="top"><a class="el" href="structtjtransform.html">tjtransform</a>&#160;&#160;&#160;</td><td></td></tr>
-<tr><td></td><td></td><td></td></tr>
-<tr><td valign="top"><a class="el" href="structtjregion.html">tjregion</a>&#160;&#160;&#160;</td><td></td><td></td><td></td></tr>
-<tr><td></td><td></td><td></td><td></td></tr>
-</table>
-<div class="qindex"><a class="qindex" href="#letter_T">T</a></div>
+<div class="classindex">
+<dl class="classindex even">
+<dt class="alphachar"><a id="letter_T" name="letter_T">T</a></dt>
+<dd><a class="el" href="structtjregion.html">tjregion</a></dd><dd><a class="el" href="structtjscalingfactor.html">tjscalingfactor</a></dd><dd><a class="el" href="structtjtransform.html">tjtransform</a></dd></dl>
+</div>
 </div><!-- contents -->
 <!-- start footer part -->
 <hr class="footer"/><address class="footer"><small>
-Generated by &#160;<a href="http://www.doxygen.org/index.html">
-<img class="footer" src="doxygen.png" alt="doxygen"/>
-</a> 1.8.3.1
+Generated by&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.8
 </small></address>
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 </html>

doc/html/doc.svg

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" width="16" height="24" viewBox="0 0 80 60" id="doc" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve">
+<g style="fill:#4665A2">
+<path d="m 14,-1.1445312 c -2.824372,0 -5.1445313,2.320159 -5.1445312,5.1445312 v 72 c 0,2.824372 2.3201592,5.144531 5.1445312,5.144531 h 52 c 2.824372,0 5.144531,-2.320159 5.144531,-5.144531 V 23.699219 a 1.1447968,1.1447968 0 0 0 -0.01563,-0.1875 C 70.977847,22.605363 70.406495,21.99048 70.007812,21.591797 L 48.208984,-0.20898438 C 47.606104,-0.81186474 46.804652,-1.1445313 46,-1.1445312 Z m 1.144531,6.2890624 H 42.855469 V 24 c 0,1.724372 1.420159,3.144531 3.144531,3.144531 H 64.855469 V 74.855469 H 15.144531 Z m 34,4.4179688 L 60.4375,20.855469 H 49.144531 Z"/>
+</g>
+<g style="fill:#D8DFEE;stroke-width:0">
+<path d="M 3.0307167,13.993174 V 7.0307167 h 2.7576792 2.7576792 v 1.8826151 c 0,1.2578262 0.0099,1.9287572 0.029818,2.0216512 0.03884,0.181105 0.168631,0.348218 0.33827,0.43554 l 0.1355017,0.06975 1.9598092,0.0079 1.959809,0.0078 v 4.749829 4.749829 H 8 3.0307167 Z" transform="matrix(5,0,0,5,0,-30)" />
+<path d="M 9.8293515,9.0581469 V 7.9456453 l 1.1058025,1.1055492 c 0.608191,0.6080521 1.105802,1.1086775 1.105802,1.1125015 0,0.0038 -0.497611,0.007 -1.105802,0.007 H 9.8293515 Z" transform="matrix(5,0,0,5,0,-30)" />
+</g>
+</svg>

doc/html/docd.svg

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" width="16" height="24" viewBox="0 0 80 60" id="doc" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve">
+<g style="fill:#C4CFE5">
+<path d="m 14,-1.1445312 c -2.824372,0 -5.1445313,2.320159 -5.1445312,5.1445312 v 72 c 0,2.824372 2.3201592,5.144531 5.1445312,5.144531 h 52 c 2.824372,0 5.144531,-2.320159 5.144531,-5.144531 V 23.699219 a 1.1447968,1.1447968 0 0 0 -0.01563,-0.1875 C 70.977847,22.605363 70.406495,21.99048 70.007812,21.591797 L 48.208984,-0.20898438 C 47.606104,-0.81186474 46.804652,-1.1445313 46,-1.1445312 Z m 1.144531,6.2890624 H 42.855469 V 24 c 0,1.724372 1.420159,3.144531 3.144531,3.144531 H 64.855469 V 74.855469 H 15.144531 Z m 34,4.4179688 L 60.4375,20.855469 H 49.144531 Z"/>
+</g>
+<g style="fill:#4665A2;stroke-width:0">
+<path d="M 3.0307167,13.993174 V 7.0307167 h 2.7576792 2.7576792 v 1.8826151 c 0,1.2578262 0.0099,1.9287572 0.029818,2.0216512 0.03884,0.181105 0.168631,0.348218 0.33827,0.43554 l 0.1355017,0.06975 1.9598092,0.0079 1.959809,0.0078 v 4.749829 4.749829 H 8 3.0307167 Z" transform="matrix(5,0,0,5,0,-30)" />
+<path d="M 9.8293515,9.0581469 V 7.9456453 l 1.1058025,1.1055492 c 0.608191,0.6080521 1.105802,1.1086775 1.105802,1.1125015 0,0.0038 -0.497611,0.007 -1.105802,0.007 H 9.8293515 Z" transform="matrix(5,0,0,5,0,-30)" />
+</g>
+</svg>

doc/html/doxygen-extra.css

@@ -1,3 +1,7 @@
 code {
-	color: #4665A2; 
+	color: #4665A2;
+}
+
+th.markdownTableHeadNone {
+	color: black;
 }

doc/html/dynsections.js

@@ -1,3 +1,27 @@
+/*
+ @licstart  The following is the entire license notice for the JavaScript code in this file.
+
+ The MIT License (MIT)
+
+ Copyright (C) 1997-2020 by Dimitri van Heesch
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ and associated documentation files (the "Software"), to deal in the Software without restriction,
+ including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in all copies or
+ substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ @licend  The above is the entire license notice for the JavaScript code in this file
+ */
 function toggleVisibility(linkObj)
 {
  var base = $(linkObj).attr('id');
@@ -15,7 +39,7 @@ function toggleVisibility(linkObj)
    summary.hide();
    $(linkObj).removeClass('closed').addClass('opened');
    $(trigger).attr('src',src.substring(0,src.length-10)+'open.png');
- } 
+ }
  return false;
 }
 
@@ -23,20 +47,23 @@ function updateStripes()
 {
   $('table.directory tr').
        removeClass('even').filter(':visible:even').addClass('even');
+  $('table.directory tr').
+       removeClass('odd').filter(':visible:odd').addClass('odd');
 }
+
 function toggleLevel(level)
 {
-  $('table.directory tr').each(function(){ 
+  $('table.directory tr').each(function() {
     var l = this.id.split('_').length-1;
     var i = $('#img'+this.id.substring(3));
     var a = $('#arr'+this.id.substring(3));
     if (l<level+1) {
-      i.attr('src','ftv2folderopen.png');
-      a.attr('src','ftv2mnode.png');
+      i.removeClass('iconfopen iconfclosed').addClass('iconfopen');
+      a.html('&#9660;');
       $(this).show();
     } else if (l==level+1) {
-      i.attr('src','ftv2folderclosed.png');
-      a.attr('src','ftv2pnode.png');
+      i.removeClass('iconfclosed iconfopen').addClass('iconfclosed');
+      a.html('&#9658;');
       $(this).show();
     } else {
       $(this).hide();
@@ -47,34 +74,33 @@ function toggleLevel(level)
 
 function toggleFolder(id)
 {
-  //The clicked row
+  // the clicked row
   var currentRow = $('#row_'+id);
-  var currentRowImages = currentRow.find("img");
 
-  //All rows after the clicked row
+  // all rows after the clicked row
   var rows = currentRow.nextAll("tr");
 
-  //Only match elements AFTER this one (can't hide elements before)
-  var childRows = rows.filter(function() {
-    var re = new RegExp('^row_'+id+'\\d+_$', "i"); //only one sub
-    return this.id.match(re);
-  });
+  var re = new RegExp('^row_'+id+'\\d+_$', "i"); //only one sub
 
-  //First row is visible we are HIDING
+  // only match elements AFTER this one (can't hide elements before)
+  var childRows = rows.filter(function() { return this.id.match(re); });
+
+  // first row is visible we are HIDING
   if (childRows.filter(':first').is(':visible')===true) {
-    currentRowImages.filter("[id^=arr]").attr('src', 'ftv2pnode.png');
-    currentRowImages.filter("[id^=img]").attr('src', 'ftv2folderclosed.png');
-    rows.filter("[id^=row_"+id+"]").hide();
-  } else { //We are SHOWING
-    //All sub images
-    var childImages = childRows.find("img");
-    var childImg = childImages.filter("[id^=img]");
-    var childArr = childImages.filter("[id^=arr]");
-
-    currentRow.find("[id^=arr]").attr('src', 'ftv2mnode.png'); //open row
-    currentRow.find("[id^=img]").attr('src', 'ftv2folderopen.png'); //open row
-    childImg.attr('src','ftv2folderclosed.png'); //children closed
-    childArr.attr('src','ftv2pnode.png'); //children closed
+    // replace down arrow by right arrow for current row
+    var currentRowSpans = currentRow.find("span");
+    currentRowSpans.filter(".iconfopen").removeClass("iconfopen").addClass("iconfclosed");
+    currentRowSpans.filter(".arrow").html('&#9658;');
+    rows.filter("[id^=row_"+id+"]").hide(); // hide all children
+  } else { // we are SHOWING
+    // replace right arrow by down arrow for current row
+    var currentRowSpans = currentRow.find("span");
+    currentRowSpans.filter(".iconfclosed").removeClass("iconfclosed").addClass("iconfopen");
+    currentRowSpans.filter(".arrow").html('&#9660;');
+    // replace down arrows by right arrows for child rows
+    var childRowsSpans = childRows.find("span");
+    childRowsSpans.filter(".iconfopen").removeClass("iconfopen").addClass("iconfclosed");
+    childRowsSpans.filter(".arrow").html('&#9658;');
     childRows.show(); //show all children
   }
   updateStripes();
@@ -95,3 +121,72 @@ function toggleInherit(id)
   }
 }
 
+var opened=true;
+// in case HTML_COLORSTYLE is LIGHT or DARK the vars will be replaced, so we write them out explicitly and use double quotes
+var plusImg  = [ "var(--fold-plus-image)",  "var(--fold-plus-image-relpath)" ];
+var minusImg = [ "var(--fold-minus-image)", "var(--fold-minus-image-relpath)" ];
+
+// toggle all folding blocks
+function codefold_toggle_all(relPath) {
+ if (opened) {
+   $('#fold_all').css('background-image',plusImg[relPath]);
+   $('div[id^=foldopen]').hide();
+   $('div[id^=foldclosed]').show();
+ } else {
+   $('#fold_all').css('background-image',minusImg[relPath]);
+   $('div[id^=foldopen]').show();
+   $('div[id^=foldclosed]').hide();
+ }
+ opened=!opened;
+}
+
+// toggle single folding block
+function codefold_toggle(id) {
+  $('#foldopen'+id).toggle();
+  $('#foldclosed'+id).toggle();
+}
+function init_codefold(relPath) {
+  $('span[class=lineno]').css(
+    {'padding-right':'4px',
+     'margin-right':'2px',
+     'display':'inline-block',
+     'width':'54px',
+     'background':'linear-gradient(var(--fold-line-color),var(--fold-line-color)) no-repeat 46px/2px 100%'
+    });
+  // add global toggle to first line
+  $('span[class=lineno]:first').append('<span class="fold" id="fold_all" '+
+                                             'onclick="javascript:codefold_toggle_all('+relPath+');" '+
+                                             'style="background-image:'+minusImg[relPath]+';"></span>');
+  // add vertical lines to other rows
+  $('span[class=lineno]').not(':eq(0)').append('<span class="fold"></span>');
+  // add toggle controls to lines with fold divs
+  $('div[class=foldopen]').each(function() {
+    // extract specific id to use
+    var id    = $(this).attr('id').replace('foldopen','');
+    // extract start and end foldable fragment attributes
+    var start = $(this).attr('data-start');
+    var end   = $(this).attr('data-end');
+    // replace normal fold span with controls for the first line of a foldable fragment
+    $(this).find('span[class=fold]:first').replaceWith('<span class="fold" '+
+                                                       'onclick="javascript:codefold_toggle(\''+id+'\');" '+
+                                                       'style="background-image:'+minusImg[relPath]+';"></span>');
+    // append div for folded (closed) representation
+    $(this).after('<div id="foldclosed'+id+'" class="foldclosed" style="display:none;"></div>');
+    // extract the first line from the "open" section to represent closed content
+    var line = $(this).children().first().clone();
+    // remove any glow that might still be active on the original line
+    $(line).removeClass('glow');
+    if (start) {
+      // if line already ends with a start marker (e.g. trailing {), remove it
+      $(line).html($(line).html().replace(new RegExp('\\s*'+start+'\\s*$','g'),''));
+    }
+    // replace minus with plus symbol
+    $(line).find('span[class=fold]').css('background-image',plusImg[relPath]);
+    // append ellipsis
+    $(line).append(' '+start+'<a href="javascript:codefold_toggle(\''+id+'\')">&#8230;</a>'+end);
+    // insert constructed line into closed div
+    $('#foldclosed'+id).html(line);
+  });
+}
+
+/* @license-end */

doc/html/folderclosed.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" width="16" height="24" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve">
+<g style="fill:#4665A2;">
+<path d="M1,5.998l-0,16.002c-0,1.326 0.527,2.598 1.464,3.536c0.938,0.937 2.21,1.464 3.536,1.464c5.322,0 14.678,-0 20,0c1.326,0 2.598,-0.527 3.536,-1.464c0.937,-0.938 1.464,-2.21 1.464,-3.536c0,-3.486 0,-8.514 0,-12c0,-1.326 -0.527,-2.598 -1.464,-3.536c-0.938,-0.937 -2.21,-1.464 -3.536,-1.464c-0,0 -10.586,0 -10.586,0c0,-0 -3.707,-3.707 -3.707,-3.707c-0.187,-0.188 -0.442,-0.293 -0.707,-0.293l-5.002,0c-2.76,0 -4.998,2.238 -4.998,4.998Zm2,-0l-0,16.002c-0,0.796 0.316,1.559 0.879,2.121c0.562,0.563 1.325,0.879 2.121,0.879l20,0c0.796,0 1.559,-0.316 2.121,-0.879c0.563,-0.562 0.879,-1.325 0.879,-2.121c0,-3.486 0,-8.514 0,-12c0,-0.796 -0.316,-1.559 -0.879,-2.121c-0.562,-0.563 -1.325,-0.879 -2.121,-0.879c-7.738,0 -11,0 -11,0c-0.265,0 -0.52,-0.105 -0.707,-0.293c-0,0 -3.707,-3.707 -3.707,-3.707c-0,0 -4.588,0 -4.588,0c-1.656,0 -2.998,1.342 -2.998,2.998Z"/>
+</g>
+<g style="fill:#D8DFEE;stroke-width:0;">
+<path d="M 5.6063709,24.951908 C 4.3924646,24.775461 3.4197129,23.899792 3.1031586,22.698521 L 3.0216155,22.389078 V 13.997725 5.6063709 L 3.1037477,5.2982247 C 3.3956682,4.2029881 4.1802788,3.412126 5.2787258,3.105917 5.5646428,3.0262132 5.6154982,3.0244963 8.0611641,3.0119829 l 2.4911989,-0.012746 1.932009,1.9300342 c 1.344142,1.3427669 1.976319,1.9498819 2.07763,1.9952626 0.137456,0.061571 0.474218,0.066269 6.006826,0.083795 l 5.861206,0.018568 0.29124,0.081916 c 1.094895,0.3079569 1.890116,1.109428 2.175567,2.192667 l 0.08154,0.3094425 V 16 22.389078 l -0.08154,0.309443 c -0.28446,1.079482 -1.086411,1.888085 -2.175567,2.193614 l -0.29124,0.0817 -10.302616,0.0049 c -5.700217,0.0027 -10.4001945,-0.0093 -10.5210471,-0.02684 z"/>
+</g>
+</svg>

doc/html/folderclosedd.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" width="16" height="24" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve">
+<g style="fill:#C4CFE5;">
+<path d="M1,5.998l-0,16.002c-0,1.326 0.527,2.598 1.464,3.536c0.938,0.937 2.21,1.464 3.536,1.464c5.322,0 14.678,-0 20,0c1.326,0 2.598,-0.527 3.536,-1.464c0.937,-0.938 1.464,-2.21 1.464,-3.536c0,-3.486 0,-8.514 0,-12c0,-1.326 -0.527,-2.598 -1.464,-3.536c-0.938,-0.937 -2.21,-1.464 -3.536,-1.464c-0,0 -10.586,0 -10.586,0c0,-0 -3.707,-3.707 -3.707,-3.707c-0.187,-0.188 -0.442,-0.293 -0.707,-0.293l-5.002,0c-2.76,0 -4.998,2.238 -4.998,4.998Zm2,-0l-0,16.002c-0,0.796 0.316,1.559 0.879,2.121c0.562,0.563 1.325,0.879 2.121,0.879l20,0c0.796,0 1.559,-0.316 2.121,-0.879c0.563,-0.562 0.879,-1.325 0.879,-2.121c0,-3.486 0,-8.514 0,-12c0,-0.796 -0.316,-1.559 -0.879,-2.121c-0.562,-0.563 -1.325,-0.879 -2.121,-0.879c-7.738,0 -11,0 -11,0c-0.265,0 -0.52,-0.105 -0.707,-0.293c-0,0 -3.707,-3.707 -3.707,-3.707c-0,0 -4.588,0 -4.588,0c-1.656,0 -2.998,1.342 -2.998,2.998Z"/>
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 <div class="contents">
 <div class="textblock">Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:</div><ul>
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+ The MIT License (MIT)
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+ Copyright (C) 1997-2020 by Dimitri van Heesch
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+ and associated documentation files (the "Software"), to deal in the Software without restriction,
+ including without limitation the rights to use, copy, modify, merge, publish, distribute,
+ sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in all copies or
+ substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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+    $(window).ready(function() { resetState(); initResizableIfExists(); });
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+  $('#main-menu').smartmenus();
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+/* @license-end */

doc/html/menudata.js

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+/*
+ @licstart  The following is the entire license notice for the JavaScript code in this file.
+
+ The MIT License (MIT)
+
+ Copyright (C) 1997-2020 by Dimitri van Heesch
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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