Fix PNG detection in CMake

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

.gitattributes

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

.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.

BUILDING.md

@@ -8,14 +8,16 @@ Build Requirements
 
 ### All Systems
 
-- [CMake](http://www.cmake.org) v2.8.12 or later
+- [CMake](https://cmake.org) v2.8.12 or later
 
-- [NASM](http://www.nasm.us) or [Yasm](http://yasm.tortall.net)
+- [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](http://www.macports.org/) or [Homebrew](http://brew.sh/).
+    [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
@@ -25,9 +27,9 @@ Build Requirements
     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) repository on
-    Red Hat Enterprise Linux 8 and in the PowerTools repository on CentOS 8,
-    which is not enabled by default.
+  * 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)
 
@@ -37,7 +39,7 @@ Build Requirements
   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
-  <http://www.oracle.com/technetwork/java/javase/downloads>.
+  <https://oracle.com/java/technologies/downloads>.
 
   * If using JDK 11 or later, CMake 3.10.x or later must also be used.
 
@@ -47,7 +49,8 @@ Build Requirements
 
   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).
+  [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
@@ -68,14 +71,14 @@ Build Requirements
 
       git clone https://github.com/Microsoft/vcpkg.git
       cd vcpkg
-      ./bootstrap-vcpkg.sh
+      ./bootstrap-vcpkg.bat
       ./vcpkg integrate install
-      vcpkg install libpng:x64-windows
-      vcpkg install libpng:x64-windows-static
+      ./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
+      ./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.
 
@@ -85,18 +88,26 @@ Build Requirements
 
 - MinGW
 
-  [MSYS2](http://msys2.github.io/) or [tdm-gcc](http://tdm-gcc.tdragon.net/)
+  [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
-  <http://www.oracle.com/technetwork/java/javase/downloads>.
+  <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
 ------------------
 
@@ -298,15 +309,6 @@ API/ABI-compatible with libjpeg v8.  See [README.md](README.md) for more
 information about libjpeg v7 and v8 emulation.
 
 
-### In-Memory Source/Destination Managers
-
-When using libjpeg v6b or v7 API/ABI emulation, add `-DWITH_MEM_SRCDST=0` to
-the CMake command line to build a version of libjpeg-turbo that lacks the
-`jpeg_mem_src()` and `jpeg_mem_dest()` functions.  These functions were not
-part of the original libjpeg v6b and v7 APIs, so removing them ensures strict
-conformance with those APIs.  See [README.md](README.md) for more information.
-
-
 ### Arithmetic Coding Support
 
 Since the patent on arithmetic coding has expired, this functionality has been
@@ -382,9 +384,13 @@ 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)
 
@@ -401,9 +407,13 @@ 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
 ------------------------------
@@ -424,27 +434,27 @@ iPhone 5S/iPad Mini 2/iPad Air and newer.
 
     IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
     IOS_SYSROOT=($IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS*.sdk)
-    export CFLAGS="-Wall -arch arm64 -miphoneos-version-min=8.0 -funwind-tables"
+    export CFLAGS="-Wall -miphoneos-version-min=8.0 -funwind-tables"
 
     cd {build_directory}
 
-    cat <<EOF >toolchain.cmake
-    set(CMAKE_SYSTEM_NAME Darwin)
-    set(CMAKE_SYSTEM_PROCESSOR aarch64)
-    set(CMAKE_C_COMPILER /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang)
-    EOF
-
-    cmake -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake \
+    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/tools/sdk/ndk).
+[Android NDK](https://developer.android.com/ndk).
 
 
 ### Armv7 (32-bit)
@@ -612,15 +622,6 @@ brackets, then its final value will depend on the final value of that other
 variable.  For instance, the default value of `CMAKE_INSTALL_MANDIR` is
 **\<CMAKE\_INSTALL\_DATAROOTDIR\>/man**.
 
-NOTE: If setting one of these directory variables to a relative path using the
-CMake command line, you must specify that the variable is of type `PATH`.
-For example:
-
-    cmake -G"{generator type}" -DCMAKE_INSTALL_LIBDIR:PATH=lib {source_directory}
-
-Otherwise, CMake will assume that the path is relative to the build directory
-rather than the install directory.
-
 
 Creating Distribution Packages
 ==============================
@@ -657,18 +658,19 @@ 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:
 
-* `ARMV8_BUILD`: Directory containing an Armv8 (64-bit) iOS or macOS build of
-  libjpeg-turbo to include in the universal binaries
+* `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 an Armv8 sub-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 (x86-64) 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 sub-build, use lipo to combine it with the
-primary build into a single set of universal binaries, then package 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
@@ -693,7 +695,7 @@ 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
+[Nullsoft Install System](https://nsis.sourceforge.io).  makensis.exe should
 be in your `PATH`.
 
 

BUILDING.txt

@@ -1,902 +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 or YASM (if building x86 or x86-64 SIMD extensions)
-   * NASM 0.98, or 2.01 or later is required for an x86 build (0.99 and 2.00 do
-     not work properly with libjpeg-turbo's x86 SIMD code.)
-   * NASM 2.00 or later is required for an x86-64 build.
-   * NASM 2.07, or 2.11.09 or later is required for an x86-64 Mac build
-     (2.11.08 does not work properly with libjpeg-turbo's x86-64 SIMD code when
-     building macho64 objects.)  NASM or YASM can be obtained from MacPorts
-     (http://www.macports.org/).
-
-   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 recommended for best performance
-   * Beginning with Xcode 4, Apple stopped distributing GCC and switched to
-     the LLVM compiler.  Xcode v4.0 through v4.6 provides a GCC front end
-     called LLVM-GCC.  Unfortunately, as of this writing, neither LLVM-GCC nor
-     the LLVM (clang) compiler produces optimal performance with libjpeg-turbo.
-     Building mozjpeg with LLVM-GCC v4.2 results in a 10% performance
-     degradation when compressing using 64-bit code, relative to building
-     libjpeg-turbo with GCC v4.2.  Building libjpeg-turbo with LLVM (clang)
-     results in a 20% performance degradation when compressing using 64-bit
-     code, relative to building libjpeg-turbo with GCC v4.2.  If you are
-     running Snow Leopard or earlier, it is suggested that you continue to use
-     Xcode v3.2.6, which provides GCC v4.2.  If you are using Lion or later, it
-     is suggested that you install Apple GCC v4.2 or GCC v5 through MacPorts.
-
--- 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
-
-NOTE: Running autoreconf in the source directory is not necessary if building
-mozjpeg from one of the official release tarballs.
-
-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.
-
-
-64-bit Build on 64-bit OS X
----------------------------
-
-Add
-
-  --host x86_64-apple-darwin NASM=/opt/local/bin/nasm
-
-to the configure command line.  NASM 2.07 or later from MacPorts must be
-installed.
-
-
-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://raw.githubusercontent.com/libjpeg-turbo/gas-preprocessor/master/gas-preprocessor.pl)
-  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 $IOS_CFLAGS"
-
-to the configure command line.
-
-
-ARMv8 64-bit Build (Xcode 5.0.x and later, Clang):
-
-Code will run on iPhone 5S/iPad Mini 2/iPad Air and newer.
-
-Set the following shell variables for simplicity:
-
-  IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
-  IOS_SYSROOT=$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" or "darwin-x86_64"}
-  TOOLCHAIN_VERSION={"4.8", "4.9", "clang3.5", etc.  This corresponds to a
-    toolchain directory under ${NDK_PATH}/toolchains/.}
-  ANDROID_VERSION={The minimum version of Android to support-- for example,
-    "16", "19", etc.  "21" or later is required for a 64-bit build.}
-
-  # 32-bit ARMv7 build
-  HOST=arm-linux-androideabi
-  SYSROOT=${NDK_PATH}/platforms/android-${ANDROID_VERSION}/arch-arm
-  ANDROID_CFLAGS="-march=armv7-a -mfloat-abi=softfp -fprefetch-loop-arrays \
-    --sysroot=${SYSROOT}"
-
-  # 64-bit ARMv8 build
-  HOST=aarch64-linux-android
-  SYSROOT=${NDK_PATH}/platforms/android-${ANDROID_VERSION}/arch-arm64
-  ANDROID_CFLAGS="--sysroot=${SYSROOT}"
-
-  TOOLCHAIN=${NDK_PATH}/toolchains/${HOST}-${TOOLCHAIN_VERSION}/prebuilt/${BUILD_PLATFORM}
-  ANDROID_INCLUDES="-I${SYSROOT}/usr/include -I${TOOLCHAIN}/include"
-  export CPP=${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} ${ANDROID_CFLAGS} -O3 -fPIE" \
-    CPPFLAGS="${ANDROID_INCLUDES} ${ANDROID_CFLAGS}" \
-    LDFLAGS="${ANDROID_CFLAGS} -pie" --with-simd ${1+"$@"}
-  make
-
-If building for Android 4.0.x (API level < 16) or earlier, remove -fPIE from
-CFLAGS and -pie from LDFLAGS.
-
-
-*******************************************************************************
-**     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.

ChangeLog.md

@@ -1,7 +1,485 @@
+3.0.5
+=====
+
+### Significant changes relative to 3.0.4:
+
+1. Fixed an issue in the TurboJPEG API whereby, when generating a
+12-bit-per-sample or 16-bit-per-sample lossless JPEG image, specifying a point
+transform value greater than 7 resulted in an error ("Parameter value out of
+range".)
+
+2. Fixed a regression introduced by 1.4 beta1[3] that prevented
+`jpeg_set_defaults()` from resetting the Huffman tables to default (baseline)
+values if Huffman table optimization or progressive mode was previously enabled
+in the same libjpeg instance.
+
+3. Fixed an issue whereby lossless JPEG compression could not be disabled if it
+was previously enabled in a libjpeg or TurboJPEG instance.
+`jpeg_set_defaults()` now disables lossless JPEG compression in a libjpeg
+instance, and setting `TJPARAM_LOSSLESS`/`TJ.PARAM_LOSSLESS` to `0` now
+disables lossless JPEG compression in a TurboJPEG instance.
+
+4. Hardened the libjpeg API against hypothetical calling applications that may
+erroneously change the value of the `data_precision` field in
+`jpeg_compress_struct` or `jpeg_decompress_struct` after calling
+`jpeg_start_compress()` or `jpeg_start_decompress()`.
+
+
+3.0.4
+=====
+
+### Significant changes relative to 3.0.3:
+
+1. Fixed an issue whereby the CPU usage of the default marker processor in the
+decompressor grew exponentially with the number of markers.  This caused an
+unreasonable slow-down in `jpeg_read_header()` if an application called
+`jpeg_save_markers()` to save markers of a particular type and then attempted
+to decompress a JPEG image containing an excessive number of markers of that
+type.
+
+2. Hardened the default marker processor in the decompressor to guard against
+an issue (exposed by 3.0 beta2[6]) whereby attempting to decompress a
+specially-crafted malformed JPEG image (specifically an image with a complete
+12-bit-per-sample Start Of Frame segment followed by an incomplete
+8-bit-per-sample Start Of Frame segment) using buffered-image mode and input
+prefetching caused a segfault if the `fill_input_buffer()` method in the
+calling application's custom source manager incorrectly returned `FALSE` in
+response to a prematurely-terminated JPEG data stream.
+
+3. Fixed an issue in cjpeg whereby, when generating a 12-bit-per-sample or
+16-bit-per-sample lossless JPEG image, specifying a point transform value
+greater than 7 resulted in an error ("Invalid progressive/lossless parameters")
+unless the `-precision` option was specified before the `-lossless` option.
+
+4. Fixed a regression introduced by 3.0.3[3] that made it impossible for
+calling applications to generate 12-bit-per-sample arithmetic-coded lossy JPEG
+images using the TurboJPEG API.
+
+5. Fixed an error ("Destination buffer is not large enough") that occurred when
+attempting to generate a full-color lossless JPEG image using the TurboJPEG
+Java API's `byte[] TJCompressor.compress()` method if the value of
+`TJ.PARAM_SUBSAMP` was not `TJ.SAMP_444`.
+
+6. Fixed a segfault in djpeg that occurred if a negative width was specified
+with the `-crop` option.  Since the cropping region width was read into an
+unsigned 32-bit integer, a negative width was interpreted as a very large
+value.  With certain negative width and positive left boundary values, the
+bounds checks in djpeg and `jpeg_crop_scanline()` overflowed and did not detect
+the out-of-bounds width, which caused a buffer overrun in the upsampling or
+color conversion routine.  Both bounds checks now use 64-bit integers to guard
+against overflow, and djpeg now checks for negative numbers when it parses the
+crop specification from the command line.
+
+7. Fixed an issue whereby the TurboJPEG lossless transformation function and
+methods checked the specified cropping region against the source image
+dimensions and level of chrominance subsampling rather than the destination
+image dimensions and level of chrominance subsampling, which caused some
+cropping regions to be unduly rejected when performing 90-degree rotation,
+270-degree rotation, transposition, transverse transposition, or grayscale
+conversion.
+
+8. Fixed a regression, introduced by 3.0 beta2[4], that prevented the
+`tjTransform()` backward compatibility function from copying extra markers from
+the source image to the destination image.
+
+9. Fixed an issue whereby the TurboJPEG lossless transformation function and
+methods did not honor `TJXOPT_COPYNONE`/`TJTransform.OPT_COPYNONE` unless it
+was specified for all lossless transforms.
+
+
+3.0.3
+=====
+
+### Significant changes relative to 3.0.2:
+
+1. Fixed an issue in the build system, introduced in 3.0.2, that caused all
+libjpeg-turbo components to depend on the Visual C++ run-time DLL when built
+with Visual C++ and CMake 3.15 or later, regardless of value of the
+`WITH_CRT_DLL` CMake variable.
+
+2. The x86-64 SIMD extensions now include support for Intel Control-flow
+Enforcement Technology (CET), which is enabled automatically if CET is enabled
+in the C compiler.
+
+3. Fixed a regression introduced by 3.0 beta2[6] that made it impossible for
+calling applications to supply custom Huffman tables when generating
+12-bit-per-component lossy JPEG images using the libjpeg API.
+
+4. Fixed a segfault that occurred when attempting to use the jpegtran `-drop`
+option with a specially-crafted malformed input image or drop image
+(specifically an image in which all of the scans contain fewer components than
+the number of components specified in the Start Of Frame segment.)
+
+
+3.0.2
+=====
+
+### Significant changes relative to 3.0.1:
+
+1. Fixed a signed integer overflow in the `tj3CompressFromYUV8()`,
+`tj3DecodeYUV8()`, `tj3DecompressToYUV8()`, and `tj3EncodeYUV8()` functions,
+detected by the Clang and GCC undefined behavior sanitizers, that could be
+triggered by setting the `align` parameter to an unreasonably large value.
+This issue did not pose a security threat, but removing the warning made it
+easier to detect actual security issues, should they arise in the future.
+
+2. Introduced a new parameter (`TJPARAM_MAXMEMORY` in the TurboJPEG C API and
+`TJ.PARAM_MAXMEMORY` in the TurboJPEG Java API) and a corresponding TJBench
+option (`-maxmemory`) for specifying the maximum amount of memory (in
+megabytes) that will be allocated for intermediate buffers, which are used with
+progressive JPEG compression and decompression, Huffman table optimization,
+lossless JPEG compression, and lossless transformation.  The new parameter and
+option serve the same purpose as the `max_memory_to_use` field in the
+`jpeg_memory_mgr` struct in the libjpeg API, the `JPEGMEM` environment
+variable, and the cjpeg/djpeg/jpegtran `-maxmemory` option.
+
+3. Introduced a new parameter (`TJPARAM_MAXPIXELS` in the TurboJPEG C API and
+`TJ.PARAM_MAXPIXELS` in the TurboJPEG Java API) and a corresponding TJBench
+option (`-maxpixels`) for specifying the maximum number of pixels that the
+decompression, lossless transformation, and packed-pixel image loading
+functions/methods will process.
+
+4. Fixed an error ("Unsupported color conversion request") that occurred when
+attempting to decompress a 3-component lossless JPEG image without an Adobe
+APP14 marker.  The decompressor now assumes that a 3-component lossless JPEG
+image without an Adobe APP14 marker uses the RGB colorspace if its component
+IDs are 1, 2, and 3.
+
+
+3.0.1
+=====
+
+### Significant changes relative to 3.0.0:
+
+1. The x86-64 SIMD functions now use a standard stack frame, prologue, and
+epilogue so that debuggers and profilers can reliably capture backtraces from
+within the functions.
+
+2. Fixed two minor issues in the interblock smoothing algorithm that caused
+mathematical (but not necessarily perceptible) edge block errors when
+decompressing progressive JPEG images exactly two DCT blocks in width or that
+use vertical chrominance subsampling.
+
+3. Fixed a regression introduced by 3.0 beta2[6] that, in rare cases, caused
+the C Huffman encoder (which is not used by default on x86 and Arm CPUs) to
+generate incorrect results if the Neon SIMD extensions were explicitly disabled
+at build time (by setting the `WITH_SIMD` CMake variable to `0`) in an AArch64
+build of libjpeg-turbo.
+
+
+3.0.0
+=====
+
+### Significant changes relative to 3.0 beta2:
+
+1. The TurboJPEG API now supports 4:4:1 (transposed 4:1:1) chrominance
+subsampling, which allows losslessly transposed or rotated 4:1:1 JPEG images to
+be losslessly cropped, partially decompressed, or decompressed to planar YUV
+images.
+
+2. Fixed various segfaults and buffer overruns (CVE-2023-2804) that occurred
+when attempting to decompress various specially-crafted malformed
+12-bit-per-component and 16-bit-per-component lossless JPEG images using color
+quantization or merged chroma upsampling/color conversion.  The underlying
+cause of these issues was that the color quantization and merged chroma
+upsampling/color conversion algorithms were not designed with lossless
+decompression in mind.  Since libjpeg-turbo explicitly does not support color
+conversion when compressing or decompressing lossless JPEG images, merged
+chroma upsampling/color conversion never should have been enabled for such
+images.  Color quantization is a legacy feature that serves little or no
+purpose with lossless JPEG images, so it is also now disabled when
+decompressing such images.  (As a result, djpeg can no longer decompress a
+lossless JPEG image into a GIF image.)
+
+3. Fixed an oversight in 1.4 beta1[8] that caused various segfaults and buffer
+overruns when attempting to decompress various specially-crafted malformed
+12-bit-per-component JPEG images using djpeg with both color quantization and
+RGB565 color conversion enabled.
+
+4. Fixed an issue whereby `jpeg_crop_scanline()` sometimes miscalculated the
+downsampled width for components with 4x2 or 2x4 subsampling factors if
+decompression scaling was enabled.  This caused the components to be upsampled
+incompletely, which caused the color converter to read from uninitialized
+memory.  With 12-bit data precision, this caused a buffer overrun or underrun
+and subsequent segfault if the sample value read from uninitialized memory was
+outside of the valid sample range.
+
+5. Fixed a long-standing issue whereby the `tj3Transform()` function, when used
+with the `TJXOP_TRANSPOSE`, `TJXOP_TRANSVERSE`, `TJXOP_ROT90`, or
+`TJXOP_ROT270` transform operation and without automatic JPEG destination
+buffer (re)allocation or lossless cropping, computed the worst-case transformed
+JPEG image size based on the source image dimensions rather than the
+transformed image dimensions.  If a calling program allocated the JPEG
+destination buffer based on the transformed image dimensions, as the API
+documentation instructs, and attempted to transform a specially-crafted 4:2:2,
+4:4:0, 4:1:1, or 4:4:1 JPEG source image containing a large amount of metadata,
+the issue caused `tj3Transform()` to overflow the JPEG destination buffer
+rather than fail gracefully.  The issue could be worked around by setting
+`TJXOPT_COPYNONE`.  Note that, irrespective of this issue, `tj3Transform()`
+cannot reliably transform JPEG source images that contain a large amount of
+metadata unless automatic JPEG destination buffer (re)allocation is used or
+`TJXOPT_COPYNONE` is set.
+
+6. Fixed a regression introduced by 3.0 beta2[6] that prevented the djpeg
+`-map` option from working when decompressing 12-bit-per-component lossy JPEG
+images.
+
+7. Fixed an issue that caused the C Huffman encoder (which is not used by
+default on x86 and Arm CPUs) to read from uninitialized memory when attempting
+to transform a specially-crafted malformed arithmetic-coded JPEG source image
+into a baseline Huffman-coded JPEG destination image.
+
+
+2.1.91 (3.0 beta2)
+==================
+
+### Significant changes relative to 2.1.5.1:
+
+1. Significantly sped up the computation of optimal Huffman tables.  This
+speeds up the compression of tiny images by as much as 2x and provides a
+noticeable speedup for images as large as 256x256 when using optimal Huffman
+tables.
+
+2. All deprecated fields, constructors, and methods in the TurboJPEG Java API
+have been removed.
+
+3. Arithmetic entropy coding is now supported with 12-bit-per-component JPEG
+images.
+
+4. Overhauled the TurboJPEG API to address long-standing limitations and to
+make the API more extensible and intuitive:
+
+     - All C function names are now prefixed with `tj3`, and all version
+suffixes have been removed from the function names.  Future API overhauls will
+increment the prefix to `tj4`, etc., thus retaining backward API/ABI
+compatibility without versioning each individual function.
+     - Stateless boolean flags have been replaced with stateful integer API
+parameters, the values of which persist between function calls.  New
+functions/methods (`tj3Set()`/`TJCompressor.set()`/`TJDecompressor.set()` and
+`tj3Get()`/`TJCompressor.get()`/`TJDecompressor.get()`) can be used to set and
+query the value of a particular API parameter.
+     - The JPEG quality and subsampling are now implemented using API
+parameters rather than stateless function arguments (C) or dedicated set/get
+methods (Java.)
+     - `tj3DecompressHeader()` now stores all relevant information about the
+JPEG image, including the width, height, subsampling type, entropy coding
+algorithm, etc., in API parameters rather than returning that information
+through pointer arguments.
+     - `TJFLAG_LIMITSCANS`/`TJ.FLAG_LIMITSCANS` has been reimplemented as an
+API parameter (`TJPARAM_SCANLIMIT`/`TJ.PARAM_SCANLIMIT`) that allows the number
+of scans to be specified.
+     - Huffman table optimization can now be specified using a new API
+parameter (`TJPARAM_OPTIMIZE`/`TJ.PARAM_OPTIMIZE`), a new transform option
+(`TJXOPT_OPTIMIZE`/`TJTransform.OPT_OPTIMIZE`), and a new TJBench option
+(`-optimize`.)
+     - Arithmetic entropy coding can now be specified or queried, using a new
+API parameter (`TJPARAM_ARITHMETIC`/`TJ.PARAM_ARITHMETIC`), a new transform
+option (`TJXOPT_ARITHMETIC`/`TJTransform.OPT_ARITHMETIC`), and a new TJBench
+option (`-arithmetic`.)
+     - The restart marker interval can now be specified, using new API
+parameters (`TJPARAM_RESTARTROWS`/`TJ.PARAM_RESTARTROWS` and
+`TJPARAM_RESTARTBLOCKS`/`TJ.PARAM_RESTARTBLOCKS`) and a new TJBench option
+(`-restart`.)
+     - Pixel density can now be specified or queried, using new API parameters
+(`TJPARAM_XDENSITY`/`TJ.PARAM_XDENSITY`,
+`TJPARAM_YDENSITY`/`TJ.PARAM_YDENSITY`, and
+`TJPARAM_DENSITYUNITS`/`TJ.PARAM_DENSITYUNITS`.)
+     - The accurate DCT/IDCT algorithms are now the default for both
+compression and decompression, since the "fast" algorithms are considered to be
+a legacy feature.  (The "fast" algorithms do not pass the ISO compliance tests,
+and those algorithms are not any faster than the accurate algorithms on modern
+x86 CPUs.)
+     - All C initialization functions have been combined into a single function
+(`tj3Init()`) that accepts an integer argument specifying the subsystems to
+initialize.
+     - All C functions now use the `const` keyword for pointer arguments that
+point to unmodified buffers (and for both dimensions of pointer arguments that
+point to sets of unmodified buffers.)
+     - All C functions now use `size_t` rather than `unsigned long` to
+represent buffer sizes, for compatibility with `malloc()` and to avoid
+disparities in the size of `unsigned long` between LP64 (Un*x) and LLP64
+(Windows) operating systems.
+     - All C buffer size functions now return 0 if an error occurs, rather than
+trying to awkwardly return -1 in an unsigned data type (which could easily be
+misinterpreted as a very large value.)
+     - Decompression scaling is now enabled explicitly, using a new
+function/method (`tj3SetScalingFactor()`/`TJDecompressor.setScalingFactor()`),
+rather than implicitly using awkward "desired width"/"desired height"
+arguments.
+     - Partial image decompression has been implemented, using a new
+function/method (`tj3SetCroppingRegion()`/`TJDecompressor.setCroppingRegion()`)
+and a new TJBench option (`-crop`.)
+     - The JPEG colorspace can now be specified explicitly when compressing,
+using a new API parameter (`TJPARAM_COLORSPACE`/`TJ.PARAM_COLORSPACE`.)  This
+allows JPEG images with the RGB and CMYK colorspaces to be created.
+     - TJBench no longer generates error/difference images, since identical
+functionality is already available in ImageMagick.
+     - JPEG images with unknown subsampling configurations can now be
+fully decompressed into packed-pixel images or losslessly transformed (with the
+exception of lossless cropping.)  They cannot currently be partially
+decompressed or decompressed into planar YUV images.
+     - `tj3Destroy()` now silently accepts a NULL handle.
+     - `tj3Alloc()` and `tj3Free()` now return/accept void pointers, as
+`malloc()` and `free()` do.
+     - The C image I/O functions now accept a TurboJPEG instance handle, which
+is used to transmit/receive API parameter values and to receive error
+information.
+
+5. Added support for 8-bit-per-component, 12-bit-per-component, and
+16-bit-per-component lossless JPEG images.  A new libjpeg API function
+(`jpeg_enable_lossless()`), TurboJPEG API parameters
+(`TJPARAM_LOSSLESS`/`TJ.PARAM_LOSSLESS`,
+`TJPARAM_LOSSLESSPSV`/`TJ.PARAM_LOSSLESSPSV`, and
+`TJPARAM_LOSSLESSPT`/`TJ.PARAM_LOSSLESSPT`), and a cjpeg/TJBench option
+(`-lossless`) can be used to create a lossless JPEG image.  (Decompression of
+lossless JPEG images is handled automatically.)  Refer to
+[libjpeg.txt](libjpeg.txt), [usage.txt](usage.txt), and the TurboJPEG API
+documentation for more details.
+
+6. Added support for 12-bit-per-component (lossy and lossless) and
+16-bit-per-component (lossless) JPEG images to the libjpeg and TurboJPEG APIs:
+
+     - The existing `data_precision` field in `jpeg_compress_struct` and
+`jpeg_decompress_struct` has been repurposed to enable the creation of
+12-bit-per-component and 16-bit-per-component JPEG images or to detect whether
+a 12-bit-per-component or 16-bit-per-component JPEG image is being
+decompressed.
+     - New 12-bit-per-component and 16-bit-per-component versions of
+`jpeg_write_scanlines()` and `jpeg_read_scanlines()`, as well as new
+12-bit-per-component versions of `jpeg_write_raw_data()`,
+`jpeg_skip_scanlines()`, `jpeg_crop_scanline()`, and `jpeg_read_raw_data()`,
+provide interfaces for compressing from/decompressing to 12-bit-per-component
+and 16-bit-per-component packed-pixel and planar YUV image buffers.
+     - New 12-bit-per-component and 16-bit-per-component compression,
+decompression, and image I/O functions/methods have been added to the TurboJPEG
+API, and a new API parameter (`TJPARAM_PRECISION`/`TJ.PARAM_PRECISION`) can be
+used to query the data precision of a JPEG image.  (YUV functions are currently
+limited to 8-bit data precision but can be expanded to accommodate 12-bit data
+precision in the future, if such is deemed beneficial.)
+     - A new cjpeg and TJBench command-line argument (`-precision`) can be used
+to create a 12-bit-per-component or 16-bit-per-component JPEG image.
+(Decompression and transformation of 12-bit-per-component and
+16-bit-per-component JPEG images is handled automatically.)
+
+    Refer to [libjpeg.txt](libjpeg.txt), [usage.txt](usage.txt), and the
+TurboJPEG API documentation for more details.
+
+
+2.1.5.1
+=======
+
+### Significant changes relative to 2.1.5:
+
+1. The SIMD dispatchers in libjpeg-turbo 2.1.4 and prior stored the list of
+supported SIMD instruction sets in a global variable, which caused an innocuous
+race condition whereby the variable could have been initialized multiple times
+if `jpeg_start_*compress()` was called simultaneously in multiple threads.
+libjpeg-turbo 2.1.5 included an undocumented attempt to fix this race condition
+by making the SIMD support variable thread-local.  However, that caused another
+issue whereby, if `jpeg_start_*compress()` was called in one thread and
+`jpeg_read_*()` or `jpeg_write_*()` was called in a second thread, the SIMD
+support variable was never initialized in the second thread.  On x86 systems,
+this led the second thread to incorrectly assume that AVX2 instructions were
+always available, and when it attempted to use those instructions on older x86
+CPUs that do not support them, an illegal instruction error occurred.  The SIMD
+dispatchers now ensure that the SIMD support variable is initialized before
+dispatching based on its value.
+
+
+2.1.5
+=====
+
+### Significant changes relative to 2.1.4:
+
+1. Fixed issues in the build system whereby, when using the Ninja Multi-Config
+CMake generator, a static build of libjpeg-turbo (a build in which
+`ENABLE_SHARED` is `0`) could not be installed, a Windows installer could not
+be built, and the Java regression tests failed.
+
+2. Fixed a regression introduced by 2.0 beta1[15] that caused a buffer overrun
+in the progressive Huffman encoder when attempting to transform a
+specially-crafted malformed 12-bit-per-component JPEG image into a progressive
+12-bit-per-component JPEG image using a 12-bit-per-component build of
+libjpeg-turbo (`-DWITH_12BIT=1`.)  Given that the buffer overrun was fully
+contained within the progressive Huffman encoder structure and did not cause a
+segfault or other user-visible errant behavior, given that the lossless
+transformer (unlike the decompressor) is not generally exposed to arbitrary
+data exploits, and given that 12-bit-per-component builds of libjpeg-turbo are
+uncommon, this issue did not likely pose a security risk.
+
+3. Fixed an issue whereby, when using a 12-bit-per-component build of
+libjpeg-turbo (`-DWITH_12BIT=1`), passing samples with values greater than 4095
+or less than 0 to `jpeg_write_scanlines()` caused a buffer overrun or underrun
+in the RGB-to-YCbCr color converter.
+
+4. Fixed a floating point exception that occurred when attempting to use the
+jpegtran `-drop` and `-trim` options to losslessly transform a
+specially-crafted malformed JPEG image.
+
+5. Fixed an issue in `tjBufSizeYUV2()` whereby it returned a bogus result,
+rather than throwing an error, if the `align` parameter was not a power of 2.
+Fixed a similar issue in `tjCompressFromYUV()` whereby it generated a corrupt
+JPEG image in certain cases, rather than throwing an error, if the `align`
+parameter was not a power of 2.
+
+6. Fixed an issue whereby `tjDecompressToYUV2()`, which is a wrapper for
+`tjDecompressToYUVPlanes()`, used the desired YUV image dimensions rather than
+the actual scaled image dimensions when computing the plane pointers and
+strides to pass to `tjDecompressToYUVPlanes()`.  This caused a buffer overrun
+and subsequent segfault if the desired image dimensions exceeded the scaled
+image dimensions.
+
+7. Fixed an issue whereby, when decompressing a 12-bit-per-component JPEG image
+(`-DWITH_12BIT=1`) using an alpha-enabled output color space such as
+`JCS_EXT_RGBA`, the alpha channel was set to 255 rather than 4095.
+
+8. Fixed an issue whereby the Java version of TJBench did not accept a range of
+quality values.
+
+9. Fixed an issue whereby, when `-progressive` was passed to TJBench, the JPEG
+input image was not transformed into a progressive JPEG image prior to
+decompression.
+
+
+2.1.4
+=====
+
+### Significant changes relative to 2.1.3:
+
+1. Fixed a regression introduced in 2.1.3 that caused build failures with
+Visual Studio 2010.
+
+2. The `tjDecompressHeader3()` function in the TurboJPEG C API and the
+`TJDecompressor.setSourceImage()` method in the TurboJPEG Java API now accept
+"abbreviated table specification" (AKA "tables-only") datastreams, which can be
+used to prime the decompressor with quantization and Huffman tables that can be
+used when decompressing subsequent "abbreviated image" datastreams.
+
+3. libjpeg-turbo now performs run-time detection of AltiVec instructions on
+OS X/PowerPC systems if AltiVec instructions are not enabled at compile time.
+This allows both AltiVec-equipped (PowerPC G4 and G5) and non-AltiVec-equipped
+(PowerPC G3) CPUs to be supported using the same build of libjpeg-turbo.
+
+4. Fixed an error ("Bogus virtual array access") that occurred when attempting
+to decompress a progressive JPEG image with a height less than or equal to one
+iMCU (8 * the vertical sampling factor) using buffered-image mode with
+interblock smoothing enabled.  This was a regression introduced by
+2.1 beta1[6(b)].
+
+5. Fixed two issues that prevented partial image decompression from working
+properly with buffered-image mode:
+
+     - Attempting to call `jpeg_crop_scanline()` after
+`jpeg_start_decompress()` but before `jpeg_start_output()` resulted in an error
+("Improper call to JPEG library in state 207".)
+     - Attempting to use `jpeg_skip_scanlines()` resulted in an error ("Bogus
+virtual array access") under certain circumstances.
+
+
 2.1.3
 =====
 
-### Significant changes relative to 2.1.2
+### Significant changes relative to 2.1.2:
 
 1. Fixed a regression introduced by 2.0 beta1[7] whereby cjpeg compressed PGM
 input files into full-color JPEG images unless the `-grayscale` option was
@@ -25,7 +503,7 @@ be reproduced using the libjpeg API, not using djpeg.
 2.1.2
 =====
 
-### Significant changes relative to 2.1.1
+### Significant changes relative to 2.1.1:
 
 1. Fixed a regression introduced by 2.1 beta1[13] that caused the remaining
 GAS implementations of AArch64 (Arm 64-bit) Neon SIMD functions (which are used
@@ -36,9 +514,9 @@ prevented libjpeg-turbo from working properly with other linkers and also
 represented a potential security risk.
 
 2. Fixed an issue whereby the `tjTransform()` function incorrectly computed the
-MCU block size for 4:4:4 JPEG images with non-unary sampling factors and thus
-unduly rejected some cropping regions, even though those regions aligned with
-8x8 MCU block boundaries.
+iMCU size for 4:4:4 JPEG images with non-unary sampling factors and thus unduly
+rejected some cropping regions, even though those regions aligned with 8x8 iMCU
+boundaries.
 
 3. Fixed a regression introduced by 2.1 beta1[13] that caused the build system
 to enable the Arm Neon SIMD extensions when targetting Armv6 and other legacy
@@ -57,7 +535,7 @@ image contains incomplete or corrupt image data.
 2.1.1
 =====
 
-### Significant changes relative to 2.1.0
+### Significant changes relative to 2.1.0:
 
 1. Fixed a regression introduced in 2.1.0 that caused build failures with
 non-GCC-compatible compilers for Un*x/Arm platforms.
@@ -86,11 +564,11 @@ transform a specially-crafted malformed JPEG image.
 2.1.0
 =====
 
-### Significant changes relative to 2.1 beta1
+### Significant changes relative to 2.1 beta1:
 
-1. Fixed a regression introduced by 2.1 beta1[6(b)] whereby attempting to
-decompress certain progressive JPEG images with one or more component planes of
-width 8 or less caused a buffer overrun.
+1. Fixed a regression (CVE-2021-29390) introduced by 2.1 beta1[6(b)] whereby
+attempting to decompress certain progressive JPEG images with one or more
+component planes of width 8 or less caused a buffer overrun.
 
 2. Fixed a regression introduced by 2.1 beta1[6(b)] whereby attempting to
 decompress a specially-crafted malformed progressive JPEG image caused the
@@ -121,10 +599,10 @@ progressive JPEG format described in the report
 ["Two Issues with the JPEG Standard"](https://libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf).
 
 7. The PPM reader now throws an error, rather than segfaulting (due to a buffer
-overrun) or generating incorrect pixels, if an application attempts to use the
-`tjLoadImage()` function to load a 16-bit binary PPM file (a binary PPM file
-with a maximum value greater than 255) into a grayscale image buffer or to load
-a 16-bit binary PGM file into an RGB image buffer.
+overrun, CVE-2021-46822) or generating incorrect pixels, if an application
+attempts to use the `tjLoadImage()` function to load a 16-bit binary PPM file
+(a binary PPM file with a maximum value greater than 255) into a grayscale
+image buffer or to load a 16-bit binary PGM file into an RGB image buffer.
 
 8. Fixed an issue in the PPM reader that caused incorrect pixels to be
 generated when using the `tjLoadImage()` function to load a 16-bit binary PPM
@@ -290,11 +768,11 @@ methods in the TurboJPEG Java API.
 
 2. Fixed or worked around multiple issues with `jpeg_skip_scanlines()`:
 
-     - Fixed segfaults or "Corrupt JPEG data: premature end of data segment"
-errors in `jpeg_skip_scanlines()` that occurred when decompressing 4:2:2 or
-4:2:0 JPEG images using merged (non-fancy) upsampling/color conversion (that
-is, when setting `cinfo.do_fancy_upsampling` to `FALSE`.)  2.0.0[6] was a
-similar fix, but it did not cover all cases.
+     - Fixed segfaults (CVE-2020-35538) or "Corrupt JPEG data: premature end of
+data segment" errors in `jpeg_skip_scanlines()` that occurred when
+decompressing 4:2:2 or 4:2:0 JPEG images using merged (non-fancy)
+upsampling/color conversion (that is, when setting `cinfo.do_fancy_upsampling`
+to `FALSE`.)  2.0.0[6] was a similar fix, but it did not cover all cases.
      - `jpeg_skip_scanlines()` now throws an error if two-pass color
 quantization is enabled.  Two-pass color quantization never worked properly
 with `jpeg_skip_scanlines()`, and the issues could not readily be fixed.
@@ -620,16 +1098,15 @@ encounters a warning from the underlying libjpeg API (the default behavior is
 to allow the operation to complete unless a fatal error is encountered.)
 
 5. Introduced a new flag in the TurboJPEG C and Java APIs (`TJFLAG_PROGRESSIVE`
-and `TJ.FLAG_PROGRESSIVE`, respectively) that causes the library to use
-progressive entropy coding in JPEG images generated by compression and
-transform operations.  Additionally, a new transform option
-(`TJXOPT_PROGRESSIVE` in the C API and `TJTransform.OPT_PROGRESSIVE` in the
-Java API) has been introduced, allowing progressive entropy coding to be
-enabled for selected transforms in a multi-transform operation.
+and `TJ.FLAG_PROGRESSIVE`, respectively) that causes compression and transform
+operations to generate progressive JPEG images.  Additionally, a new transform
+option (`TJXOPT_PROGRESSIVE` in the C API and `TJTransform.OPT_PROGRESSIVE` in
+the Java API) has been introduced, allowing progressive JPEG images to be
+generated by selected transforms in a multi-transform operation.
 
 6. Introduced a new transform option in the TurboJPEG API (`TJXOPT_COPYNONE` in
 the C API and `TJTransform.OPT_COPYNONE` in the Java API) that allows the
-copying of markers (including EXIF and ICC profile data) to be disabled for a
+copying of markers (including Exif and ICC profile data) to be disabled for a
 particular transform.
 
 7. Added two functions to the TurboJPEG C API (`tjLoadImage()` and
@@ -760,13 +1237,13 @@ bug that has existed since the introduction of libjpeg v7/v8 API/ABI emulation
 in libjpeg-turbo v1.1.
 
 7. The lossless transform features in jpegtran and the TurboJPEG API will now
-always attempt to adjust the EXIF image width and height tags if the image size
+always attempt to adjust the Exif image width and height tags if the image size
 changed as a result of the transform.  This behavior has always existed when
 using libjpeg v8 API/ABI emulation.  It was supposed to be available with
 libjpeg v7 API/ABI emulation as well but did not work properly due to a bug.
 Furthermore, there was never any good reason not to enable it with libjpeg v6b
 API/ABI emulation, since the behavior is entirely internal.  Note that
-`-copy all` must be passed to jpegtran in order to transfer the EXIF tags from
+`-copy all` must be passed to jpegtran in order to transfer the Exif tags from
 the source image to the destination image.
 
 8. Fixed several memory leaks in the TurboJPEG API library that could occur
@@ -788,7 +1265,7 @@ for two reasons:  it allows testers to more easily work around the 2 GB limit
 in libFuzzer, and it allows developers of security-sensitive applications to
 more easily defend against one of the progressive JPEG exploits (LJT-01-004)
 identified in
-[this report](http://www.libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf).
+[this report](https://libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf).
 
 10. TJBench will now run each benchmark for 1 second prior to starting the
 timer, in order to improve the consistency of the results.  Furthermore, the
@@ -1329,7 +1806,7 @@ 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
+and IDCT algorithms (both are used during JPEG decompression.)  For
 reasons (probably related to clang), this code cannot currently be compiled for
 iOS.
 
@@ -1815,7 +2292,7 @@ and unit tests now work on those architectures.
 0.0.93
 ======
 
-### Significant changes since 0.0.91:
+### Significant changes relative to 0.0.91:
 
 1. 2982659: Fixed x86-64 build on FreeBSD systems
 

LICENSE.md

@@ -1,30 +1,33 @@
 libjpeg-turbo Licenses
 ======================
 
-libjpeg-turbo is covered by three compatible BSD-style open source 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
-  (any code inherited from libjpeg, and any modifications to that code.)
+  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 covers the TurboJPEG API library and associated programs, as
-  well as the build system.
-
-- The [zlib License](https://opensource.org/licenses/Zlib)
-
-  This license is a subset of the other two, and it covers the libjpeg-turbo
-  SIMD extensions.
+  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.
+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:
@@ -38,7 +41,7 @@ best of our understanding.
         - 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
+        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.)
 
@@ -91,7 +94,7 @@ best of our understanding.
 The Modified (3-clause) BSD License
 ===================================
 
-Copyright (C)2009-2022 D. R. Commander.  All Rights Reserved.<br>
+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
@@ -119,8 +122,8 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
 
-Why Three Licenses?
-===================
+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

README-turbo.txt

@@ -1,14 +1,14 @@
 Background
 ==========
 
-libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
-AVX2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression
-on x86, x86-64, ARM, and PowerPC systems, as well as progressive JPEG
-compression on x86 and x86-64 systems.  On such systems, libjpeg-turbo is
-generally 2-6x as fast as libjpeg, all else being equal.  On other types of
-systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by
-virtue of its highly-optimized Huffman coding routines.  In many cases, the
-performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs.
+libjpeg-turbo 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
@@ -21,7 +21,26 @@ 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>.
+
+
+Funding
+=======
+
+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.
+
+[![Sponsor libjpeg-turbo](https://img.shields.io/github/sponsors/libjpeg-turbo?label=Sponsor&logo=GitHub)](https://github.com/sponsors/libjpeg-turbo)
 
 
 License
@@ -52,7 +71,8 @@ JPEG images:
   top of the TurboJPEG API.  The TurboJPEG API is recommended for first-time
   users of libjpeg-turbo.  Refer to [tjexample.c](tjexample.c) and
   [TJExample.java](java/TJExample.java) for examples of its usage and to
-  <http://libjpeg-turbo.org/Documentation/Documentation> for API documentation.
+  <https://libjpeg-turbo.org/Documentation/Documentation> for API
+  documentation.
 
 - **libjpeg API**<br>
   This is the de facto industry-standard API for compressing and decompressing
@@ -135,25 +155,24 @@ 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
 
 #### Fully supported
 
-- **libjpeg: IDCT scaling extensions in decompressor**<br>
+- **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**<br>
+- **libjpeg API: In-memory source and destination managers**<br>
   See notes below.
 
 - **cjpeg: Separate quality settings for luminance and chrominance**<br>
@@ -180,19 +199,19 @@ which aren't.
 
 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**<br>
+- **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**<br>
+- **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
@@ -205,7 +224,7 @@ demonstrated sufficient usefulness to justify inclusion in libjpeg-turbo.
   interest in providing this feature would be as a means of supporting
   additional DCT scaling factors.
 
-- **libjpeg: Fancy downsampling in compressor**<br>
+- **libjpeg API: Fancy downsampling in compressor**<br>
   `cinfo.do_fancy_downsampling` is silently ignored.
   This requires the DCT scaling feature, which is not supported.
 
@@ -246,17 +265,6 @@ 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 62.1.0 to 62.2.0 if using libjpeg v6b API/ABI
-emulation and from 7.1.0 to 7.2.0 if using libjpeg v7 API/ABI emulation.
-
 Note that, on most Un*x systems, the dynamic linker will not look for a
 function in a library until that function is actually used.  Thus, if a program
 is built against libjpeg-turbo 1.3+ and uses `jpeg_mem_src()` or
@@ -276,29 +284,35 @@ 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.)
+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.
 
-- 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.)
+2. When using the floating point DCT/IDCT, the outputs of libjpeg v6b and
+libjpeg-turbo can differ for the following reasons:
 
-- 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.
+    - 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
@@ -331,7 +345,7 @@ 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.
 
@@ -342,5 +356,17 @@ 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

@@ -43,7 +43,7 @@ User documentation:
   change.log        Version-to-version change highlights.
 Programmer and internal documentation:
   libjpeg.txt       How to use the JPEG library in your own programs.
-  example.txt       Sample code for calling the JPEG library.
+  example.c         Sample code for calling the JPEG library.
   structure.txt     Overview of the JPEG library's internal structure.
   coderules.txt     Coding style rules --- please read if you contribute code.
 
@@ -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
@@ -241,7 +241,7 @@ 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 DCT-based JPEG standard or with JFIF (for instance,
+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

cderror.h

@@ -5,7 +5,7 @@
  * Copyright (C) 1994-1997, Thomas G. Lane.
  * Modified 2009-2017 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2021, D. R. Commander.
+ * Copyright (C) 2021, 2024, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -42,7 +42,6 @@ typedef enum {
 
 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-, 24-, and 32-bit BMP files are supported")
 JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length")
@@ -56,9 +55,7 @@ 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 %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")
@@ -74,29 +71,23 @@ 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_NOT, "Not a PPM/PGM file")
 JMESSAGE(JERR_PPM_OUTOFRANGE, "Numeric value out of range in PPM 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(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 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")

cdjpeg.h

@@ -5,10 +5,10 @@
  * Copyright (C) 1994-1997, Thomas G. Lane.
  * Modified 2019 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2017, 2019, 2021, D. R. Commander.
- * mozjpeg 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.ijg 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.
@@ -37,10 +37,12 @@ struct cjpeg_source_struct {
   FILE *input_file;
 
   JSAMPARRAY buffer;
-  JDIMENSION buffer_height;
-#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
-  JDIMENSION max_pixels;
+  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];
@@ -83,6 +85,10 @@ struct djpeg_dest_struct {
    * height is buffer_height.
    */
   JSAMPARRAY buffer;
+  J12SAMPARRAY buffer12;
+#ifdef D_LOSSLESS_SUPPORTED
+  J16SAMPARRAY buffer16;
+#endif
   JDIMENSION buffer_height;
 };
 
@@ -118,9 +124,23 @@ 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,
                                        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);
 
@@ -137,6 +157,7 @@ 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_12(j_decompress_ptr cinfo, FILE *infile);
 
 /* common support routines (in cdjpeg.c) */
 
@@ -166,6 +187,3 @@ EXTERN(FILE *) write_stdout(void);
 #ifndef EXIT_WARNING
 #define EXIT_WARNING  2
 #endif
-
-#define IsExtRGB(cs) \
-  (cs == JCS_RGB || (cs >= JCS_EXT_RGB && cs <= JCS_EXT_ARGB))

cjpeg.1

@@ -1,4 +1,4 @@
-.TH CJPEG 1 "30 November 2021"
+.TH CJPEG 1 "30 August 2024"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS
@@ -16,7 +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, GIF, and Targa.
+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
@@ -29,7 +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
@@ -40,13 +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.  By saying
+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
@@ -60,18 +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
@@ -149,11 +153,82 @@ 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 accurate integer DCT method (default).
@@ -195,8 +270,18 @@ machines.
 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
@@ -296,10 +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
@@ -354,8 +439,3 @@ relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
 features not present in libjpeg.
 .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, 2017, 2019-2022, 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.
@@ -39,16 +41,6 @@
 #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. */
 
@@ -115,11 +107,31 @@ select_file_type(j_compress_ptr cinfo, FILE *infile)
 #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:
@@ -155,9 +167,9 @@ select_file_type(j_compress_ptr cinfo, FILE *infile)
 static const char *progname;    /* program name for error messages */
 static char *icc_filename;      /* for -icc switch */
 static char *outfilename;       /* for -outfile switch */
-boolean memdst;                 /* for -memdst switch */
-boolean report;                 /* for -report switch */
-boolean strict;                 /* for -strict switch */
+static boolean memdst;          /* for -memdst switch */
+static boolean report;          /* for -report switch */
+static boolean strict;          /* for -strict switch */
 
 
 #ifdef CJPEG_FUZZER
@@ -216,10 +228,10 @@ usage(void)
   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
@@ -242,6 +254,16 @@ usage(void)
   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
@@ -275,9 +297,7 @@ usage(void)
 #endif
   fprintf(stderr, "  -maxmemory N   Maximum memory to use (in kbytes)\n");
   fprintf(stderr, "  -outfile name  Specify name for output file\n");
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
   fprintf(stderr, "  -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");
@@ -307,6 +327,9 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
 {
   int argn;
   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 */
@@ -391,7 +414,8 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
       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;
@@ -432,6 +456,28 @@ parse_switches(j_compress_ptr cinfo, int argc, char **argv,
         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;
@@ -470,6 +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
@@ -483,13 +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). */
@@ -568,7 +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 */
@@ -693,6 +749,11 @@ 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))
@@ -743,11 +804,6 @@ main(int argc, char **argv)
   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 */
@@ -887,11 +943,9 @@ 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
@@ -938,6 +992,21 @@ main(int argc, char **argv)
     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
@@ -945,7 +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 */

cmakescripts/BuildPackages.cmake

@@ -66,7 +66,7 @@ endif() # Linux
 
 if(WIN32)
 
-if(MSVC)
+if(MSVC_LIKE)
   set(INST_PLATFORM "Visual C++")
   set(INST_ID vc)
   set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-${INST_ID})
@@ -90,7 +90,7 @@ if(WITH_JAVA)
   set(INST_DEFS ${INST_DEFS} -DJAVA)
 endif()
 
-if(MSVC_IDE)
+if(GENERATOR_IS_MULTI_CONFIG)
   set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=${CMAKE_CFG_INTDIR}\\")
 else()
   set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=")
@@ -109,10 +109,13 @@ configure_file(win/${INST_ID}/projectTargets-release.cmake.in
 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 turbojpeg turbojpeg-static rdjpgcom wrjpgcom
-    cjpeg djpeg jpegtran tjbench ${JAVA_DEPEND}
+  DEPENDS jpeg jpeg-static rdjpgcom wrjpgcom cjpeg djpeg jpegtran
+    ${JAVA_DEPEND} ${TURBOJPEG_DEPEND}
   SOURCES installer.nsi)
 
 endif() # WIN32
@@ -124,8 +127,8 @@ endif() # WIN32
 
 if(APPLE)
 
-set(ARMV8_BUILD "" CACHE PATH
-  "Directory containing Armv8 iOS or macOS build to include in universal binaries")
+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.")
@@ -159,7 +162,9 @@ add_custom_target(tarball pkgscripts/maketarball
 
 configure_file(release/libjpeg.pc.in pkgscripts/libjpeg.pc @ONLY)
 
-configure_file(release/libturbojpeg.pc.in pkgscripts/libturbojpeg.pc @ONLY)
+if(WITH_TURBOJPEG)
+  configure_file(release/libturbojpeg.pc.in pkgscripts/libturbojpeg.pc @ONLY)
+endif()
 
 include(CMakePackageConfigHelpers)
 write_basic_package_version_file(

cmakescripts/GNUInstallDirs.cmake

@@ -118,9 +118,10 @@
 #   absolute paths where necessary, using the same logic.
 
 #=============================================================================
+# Copyright 2018 Tobias C. Berner
 # Copyright 2018 Matthias Räncker
-# Copyright 2016, 2019 D. R. Commander
-# Copyright 2016 Dmitry Marakasov
+# 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
@@ -181,6 +182,10 @@ macro(GNUInstallDirs_set_install_dir var docstring)
     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}})
@@ -300,7 +305,7 @@ GNUInstallDirs_set_install_dir(DATADIR
   "The directory under which read-only architecture-independent data files should be installed")
 
 if(NOT DEFINED CMAKE_INSTALL_DEFAULT_INFODIR)
-  if(CMAKE_SYSTEM_NAME MATCHES "^(.*BSD|DragonFly)$")
+  if(CMAKE_SYSTEM_NAME MATCHES "^(([^kF].*)?BSD|DragonFly)$")
     set(CMAKE_INSTALL_DEFAULT_INFODIR "info")
   else()
     set(CMAKE_INSTALL_DEFAULT_INFODIR "<CMAKE_INSTALL_DATAROOTDIR>/info")
@@ -310,7 +315,7 @@ GNUInstallDirs_set_install_dir(INFODIR
   "The directory into which info documentation files should be installed")
 
 if(NOT DEFINED CMAKE_INSTALL_DEFAULT_MANDIR)
-  if(CMAKE_SYSTEM_NAME MATCHES "^(.*BSD|DragonFly)$")
+  if(CMAKE_SYSTEM_NAME MATCHES "^(([^k].*)?BSD|DragonFly)$" AND NOT CMAKE_SYSTEM_NAME MATCHES "^(FreeBSD)$")
     set(CMAKE_INSTALL_DEFAULT_MANDIR "man")
   else()
     set(CMAKE_INSTALL_DEFAULT_MANDIR "<CMAKE_INSTALL_DATAROOTDIR>/man")

cmakescripts/PackageInfo.cmake

@@ -5,8 +5,8 @@ set(PKGNAME ${CMAKE_PROJECT_NAME} CACHE STRING
   "Distribution package name (default: ${CMAKE_PROJECT_NAME})")
 set(PKGVENDOR "The ${CMAKE_PROJECT_NAME} Project" CACHE STRING
   "Vendor name to be included in distribution package descriptions (default: The ${CMAKE_PROJECT_NAME} Project)")
-set(PKGURL "http://www.${CMAKE_PROJECT_NAME}.org" CACHE STRING
-  "URL of project web site to be included in distribution package descriptions (default: http://www.${CMAKE_PROJECT_NAME}.org)")
+set(PKGURL "https://${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

cmakescripts/testclean.cmake

@@ -30,6 +30,15 @@ file(GLOB FILES
   *_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)
 

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

@@ -1,7 +1,7 @@
 /*
  * cmyk.h
  *
- * Copyright (C) 2017-2018, D. R. Commander.
+ * Copyright (C) 2017-2018, 2022, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -17,19 +17,19 @@
 #include <jinclude.h>
 #define JPEG_INTERNALS
 #include <jpeglib.h>
-#include "jconfigint.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)
+rgb_to_cmyk(_JSAMPLE r, _JSAMPLE g, _JSAMPLE b,
+            _JSAMPLE *c, _JSAMPLE *m, _JSAMPLE *y, _JSAMPLE *k)
 {
-  double ctmp = 1.0 - ((double)r / 255.0);
-  double mtmp = 1.0 - ((double)g / 255.0);
-  double ytmp = 1.0 - ((double)b / 255.0);
+  double 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;
@@ -38,10 +38,10 @@ rgb_to_cmyk(JSAMPLE r, JSAMPLE g, JSAMPLE b, JSAMPLE *c, JSAMPLE *m,
     mtmp = (mtmp - ktmp) / (1.0 - ktmp);
     ytmp = (ytmp - ktmp) / (1.0 - ktmp);
   }
-  *c = (JSAMPLE)(255.0 - ctmp * 255.0 + 0.5);
-  *m = (JSAMPLE)(255.0 - mtmp * 255.0 + 0.5);
-  *y = (JSAMPLE)(255.0 - ytmp * 255.0 + 0.5);
-  *k = (JSAMPLE)(255.0 - ktmp * 255.0 + 0.5);
+  *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);
 }
 
 
@@ -49,12 +49,12 @@ rgb_to_cmyk(JSAMPLE r, JSAMPLE g, JSAMPLE b, JSAMPLE *c, JSAMPLE *m,
 
 INLINE
 LOCAL(void)
-cmyk_to_rgb(JSAMPLE c, JSAMPLE m, JSAMPLE y, JSAMPLE k, JSAMPLE *r, JSAMPLE *g,
-            JSAMPLE *b)
+cmyk_to_rgb(_JSAMPLE c, _JSAMPLE m, _JSAMPLE y, _JSAMPLE k,
+            _JSAMPLE *r, _JSAMPLE *g, _JSAMPLE *b)
 {
-  *r = (JSAMPLE)((double)c * (double)k / 255.0 + 0.5);
-  *g = (JSAMPLE)((double)m * (double)k / 255.0 + 0.5);
-  *b = (JSAMPLE)((double)y * (double)k / 255.0 + 0.5);
+  *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);
 }
 
 

djpeg.1

@@ -1,4 +1,4 @@
-.TH DJPEG 1 "4 November 2020"
+.TH DJPEG 1 "17 June 2024"
 .SH NAME
 djpeg \- decompress a JPEG file to an image file
 .SH SYNOPSIS
@@ -28,47 +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
@@ -77,32 +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 (LZW-compressed).  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).  If you specify
 .BR \-fast,
-the default number of colors is 216.
+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).  Since GIF does not support more than
-256 colors,
+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.
+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).
@@ -111,12 +114,13 @@ PGM is emitted if the JPEG file is grayscale or if
 is specified; otherwise PPM is emitted.
 .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
@@ -157,18 +161,18 @@ 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
@@ -176,9 +180,9 @@ mode.
 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
@@ -189,14 +193,14 @@ 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
@@ -260,36 +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.
 .SH ENVIRONMENT
 .TP
 .B JPEGMEM

djpeg.c

@@ -5,7 +5,7 @@
  * Copyright (C) 1991-1997, Thomas G. Lane.
  * Modified 2013-2019 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2010-2011, 2013-2017, 2019-2020, 2022, D. R. Commander.
+ * 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.
@@ -38,16 +38,6 @@
 
 #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. */
 
@@ -94,14 +84,14 @@ static IMAGE_FORMATS requested_fmt;
 
 static const char *progname;    /* program name for error messages */
 static char *icc_filename;      /* for -icc switch */
-JDIMENSION max_scans;           /* for -maxscans switch */
+static JDIMENSION max_scans;    /* for -maxscans switch */
 static char *outfilename;       /* for -outfile switch */
-boolean memsrc;                 /* for -memsrc switch */
-boolean report;                 /* for -report switch */
-boolean skip, crop;
-JDIMENSION skip_start, skip_end;
-JDIMENSION crop_x, crop_y, crop_width, crop_height;
-boolean strict;                 /* for -strict 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
 
 
@@ -117,8 +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");
@@ -130,13 +120,13 @@ usage(void)
           (DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
 #endif
 #ifdef GIF_SUPPORTED
-  fprintf(stderr, "  -gif           Select GIF output format (LZW-compressed)%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\n",
+  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
@@ -144,7 +134,7 @@ usage(void)
           (DEFAULT_FMT == FMT_PPM ? " (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");
@@ -160,23 +150,23 @@ usage(void)
   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");
@@ -279,7 +269,8 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
       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;
@@ -326,7 +317,9 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
       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. */
@@ -340,7 +333,10 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
           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
@@ -387,13 +383,7 @@ 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. */
@@ -402,7 +392,7 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
     } else if (keymatch(arg, "report", 2)) {
       report = TRUE;
 
-    } else if (keymatch(arg, "scale", 2)) {
+    } else if (keymatch(arg, "scale", 1)) {
       /* Scale the output image by a fraction M/N. */
       if (++argn >= argc)       /* advance to next argument */
         usage();
@@ -411,22 +401,31 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
         usage();
 
     } else if (keymatch(arg, "skip", 2)) {
+      int temp_start = -1, temp_end = -1;
       if (++argn >= argc)
         usage();
-      if (sscanf(argv[argn], "%u,%u", &skip_start, &skip_end) != 2 ||
-          skip_start > skip_end)
+      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], "%u%c%u+%u+%u", &crop_width, &c, &crop_height,
-                 &crop_x, &crop_y) != 5 ||
-          (c != 'X' && c != 'x') || crop_width < 1 || crop_height < 1)
+      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;
@@ -545,16 +544,9 @@ main(int argc, char **argv)
   FILE *input_file;
   FILE *output_file;
   unsigned char *inbuffer = NULL;
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
   unsigned long insize = 0;
-#endif
   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 */
@@ -642,7 +634,6 @@ main(int argc, char **argv)
   }
 
   /* Specify data source for decompression */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
   if (memsrc) {
     size_t nbytes;
     do {
@@ -664,7 +655,6 @@ 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 */
@@ -687,7 +677,12 @@ main(int argc, char **argv)
 #endif
 #ifdef GIF_SUPPORTED
   case FMT_GIF:
-    dest_mgr = jinit_write_gif(&cinfo, TRUE);
+    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);
@@ -695,7 +690,16 @@ main(int argc, char **argv)
 #endif
 #ifdef PPM_SUPPORTED
   case FMT_PPM:
-    dest_mgr = jinit_write_ppm(&cinfo);
+    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
+    else if (cinfo.data_precision == 12)
+      dest_mgr = j12init_write_ppm(&cinfo);
+    else
+      dest_mgr = jinit_write_ppm(&cinfo);
     break;
 #endif
 #ifdef TARGA_SUPPORTED
@@ -734,22 +738,44 @@ main(int argc, char **argv)
     (*dest_mgr->start_output) (&cinfo, dest_mgr);
     cinfo.output_height = tmp;
 
-    /* Process data */
-    while (cinfo.output_scanline < skip_start) {
-      num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-                                          dest_mgr->buffer_height);
-      (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
-    }
-    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);
+    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 */
@@ -759,14 +785,19 @@ main(int argc, char **argv)
     /* Check for valid crop dimensions.  We cannot check these values until
      * after jpeg_start_decompress() is called.
      */
-    if (crop_x + crop_width > cinfo.output_width ||
-        crop_y + crop_height > cinfo.output_height) {
+    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);
     }
 
-    jpeg_crop_scanline(&cinfo, &crop_x, &crop_width);
+    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
@@ -780,24 +811,48 @@ main(int argc, char **argv)
     (*dest_mgr->start_output) (&cinfo, dest_mgr);
     cinfo.output_height = tmp;
 
-    /* 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);
+    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 */
@@ -805,11 +860,31 @@ main(int argc, char **argv)
     /* Write output file header */
     (*dest_mgr->start_output) (&cinfo, dest_mgr);
 
-    /* Process data */
-    while (cinfo.output_scanline < cinfo.output_height) {
-      num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
-                                          dest_mgr->buffer_height);
-      (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
+    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);
+      }
     }
   }
 

doc/html/annotated.html

@@ -1,9 +1,9 @@
 <!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">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
 <head>
 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<meta http-equiv="X-UA-Compatible" content="IE=9"/>
-<meta name="generator" content="Doxygen 1.8.20"/>
+<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"/>
@@ -20,10 +20,9 @@
 <div id="titlearea">
 <table cellspacing="0" cellpadding="0">
  <tbody>
- <tr style="height: 56px;">
-  <td id="projectalign" style="padding-left: 0.5em;">
-   <div id="projectname">TurboJPEG
-   &#160;<span id="projectnumber">2.1</span>
+ <tr id="projectrow">
+  <td id="projectalign">
+   <div id="projectname">TurboJPEG<span id="projectnumber">&#160;3.0.1</span>
    </div>
   </td>
  </tr>
@@ -31,21 +30,22 @@
 </table>
 </div>
 <!-- end header part -->
-<!-- Generated by Doxygen 1.8.20 -->
+<!-- Generated by Doxygen 1.9.8 -->
 <script type="text/javascript">
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-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 */
 </script>
 <script type="text/javascript" src="menudata.js"></script>
 <script type="text/javascript" src="menu.js"></script>
 <script type="text/javascript">
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
+/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
 $(function() {
   initMenu('',true,false,'search.php','Search');
   $(document).ready(function() { init_search(); });
 });
-/* @license-end */</script>
+/* @license-end */
+</script>
 <div id="main-nav"></div>
 </div><!-- top -->
 <!-- window showing the filter options -->
@@ -57,27 +57,33 @@ $(function() {
 
 <!-- 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 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"><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_"><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_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>
 </table>
 </div><!-- directory -->
 </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.svg" width="104" height="31" alt="doxygen"/></a> 1.8.20
+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>
 </body>
 </html>

doc/html/classes.html

@@ -1,9 +1,9 @@
 <!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">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
 <head>
 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<meta http-equiv="X-UA-Compatible" content="IE=9"/>
-<meta name="generator" content="Doxygen 1.8.20"/>
+<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 Structure Index</title>
 <link href="tabs.css" rel="stylesheet" type="text/css"/>
@@ -20,10 +20,9 @@
 <div id="titlearea">
 <table cellspacing="0" cellpadding="0">
  <tbody>
- <tr style="height: 56px;">
-  <td id="projectalign" style="padding-left: 0.5em;">
-   <div id="projectname">TurboJPEG
-   &#160;<span id="projectnumber">2.1</span>
+ <tr id="projectrow">
+  <td id="projectalign">
+   <div id="projectname">TurboJPEG<span id="projectnumber">&#160;3.0.1</span>
    </div>
   </td>
  </tr>
@@ -31,21 +30,22 @@
 </table>
 </div>
 <!-- end header part -->
-<!-- Generated by Doxygen 1.8.20 -->
+<!-- Generated by Doxygen 1.9.8 -->
 <script type="text/javascript">
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-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 */
 </script>
 <script type="text/javascript" src="menudata.js"></script>
 <script type="text/javascript" src="menu.js"></script>
 <script type="text/javascript">
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
+/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
 $(function() {
   initMenu('',true,false,'search.php','Search');
   $(document).ready(function() { init_search(); });
 });
-/* @license-end */</script>
+/* @license-end */
+</script>
 <div id="main-nav"></div>
 </div><!-- top -->
 <!-- window showing the filter options -->
@@ -57,33 +57,32 @@ $(function() {
 
 <!-- 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 class="classindex">
-<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="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.svg" width="104" height="31" alt="doxygen"/></a> 1.8.20
+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>
 </body>
 </html>

doc/html/doc.svg

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+<!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">
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+<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">
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+</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)" />
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+</svg>

doc/html/doxygen-extra.css

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

doc/html/dynsections.js

@@ -47,6 +47,8 @@ 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)
@@ -118,4 +120,73 @@ function toggleInherit(id)
     $(img).attr('src',src.substring(0,src.length-10)+'open.png');
   }
 }
+
+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 */

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+</g>
+</svg>

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+</g>
+<g style="fill:#4665A2;stroke-width:0;">
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+</g>
+</svg>

doc/html/folderopen.svg

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+  ['tj3setscalingfactor_32',['tj3SetScalingFactor',['../group___turbo_j_p_e_g.html#ga89da17ee1e43ff423382cbc145803c75',1,'turbojpeg.h']]],
+  ['tj3transform_33',['tj3Transform',['../group___turbo_j_p_e_g.html#gaff23ba1dcabed456794b844791613920',1,'turbojpeg.h']]],
+  ['tj3yuvbufsize_34',['tj3YUVBufSize',['../group___turbo_j_p_e_g.html#gaaebaa16973a0f550a66eca5765ed0546',1,'turbojpeg.h']]],
+  ['tj3yuvplaneheight_35',['tj3YUVPlaneHeight',['../group___turbo_j_p_e_g.html#ga969767ec8180cc3edd99cf507f87299b',1,'turbojpeg.h']]],
+  ['tj3yuvplanesize_36',['tj3YUVPlaneSize',['../group___turbo_j_p_e_g.html#gacc19d265edce76b46146f59579f9438d',1,'turbojpeg.h']]],
+  ['tj3yuvplanewidth_37',['tj3YUVPlaneWidth',['../group___turbo_j_p_e_g.html#gac99d1933ede1d59fcada9a826e88eb2d',1,'turbojpeg.h']]]
 ];

doc/html/search/groups_0.html

@@ -1,36 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html><head><title></title>
-<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<meta name="generator" content="Doxygen 1.8.20"/>
-<link rel="stylesheet" type="text/css" href="search.css"/>
-<script type="text/javascript" src="groups_0.js"></script>
-<script type="text/javascript" src="search.js"></script>
-</head>
-<body class="SRPage">
-<div id="SRIndex">
-<div class="SRStatus" id="Loading">Loading...</div>
-<div id="SRResults"></div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-createResults();
-/* @license-end */
---></script>
-<div class="SRStatus" id="Searching">Searching...</div>
-<div class="SRStatus" id="NoMatches">No Matches</div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-document.getElementById("Loading").style.display="none";
-document.getElementById("NoMatches").style.display="none";
-var searchResults = new SearchResults("searchResults");
-searchResults.Search();
-window.addEventListener("message", function(event) {
-  if (event.data == "take_focus") {
-    var elem = searchResults.NavNext(0);
-    if (elem) elem.focus();
-  }
-});
-/* @license-end */
---></script>
-</div>
-</body>
-</html>

doc/html/search/groups_0.js

@@ -1,4 +1,4 @@
 var searchData=
 [
-  ['turbojpeg_201',['TurboJPEG',['../group___turbo_j_p_e_g.html',1,'']]]
+  ['turbojpeg_0',['TurboJPEG',['../group___turbo_j_p_e_g.html',1,'']]]
 ];

doc/html/search/mag.svg

@@ -0,0 +1,24 @@
+<?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
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   viewBox="0 0 20 19"
+   height="19"
+   width="20"
+   id="svg2"
+   version="1.1">
+  <defs
+     id="defs6" />
+  <circle
+     r="3.5"
+     cy="8.5"
+     cx="5.5"
+     id="path4611"
+     style="fill:#000000;fill-opacity:0;stroke:#656565;stroke-width:1.4;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none" />
+  <path
+     id="path4630"
+     d="m 8.1085854,11.109059 2.7823556,2.782356"
+     style="fill:none;stroke:#656565;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+</svg>

doc/html/search/mag_d.svg

@@ -0,0 +1,24 @@
+<?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
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   viewBox="0 0 20 19"
+   height="19"
+   width="20"
+   id="svg2"
+   version="1.1">
+  <defs
+     id="defs6" />
+  <circle
+     r="3.5"
+     cy="8.5"
+     cx="5.5"
+     id="path4611"
+     style="fill:#000000;fill-opacity:0;stroke:#C5C5C5;stroke-width:1.4;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none" />
+  <path
+     id="path4630"
+     d="m 8.1085854,11.109059 2.7823556,2.782356"
+     style="fill:none;stroke:#C5C5C5;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
+</svg>

doc/html/search/mag_sel.svg

@@ -1,59 +1,17 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <!-- Created with Inkscape (http://www.inkscape.org/) -->
-
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 <svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
    xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    version="1.1"
    id="svg2"
    width="20"
    height="19"
    viewBox="0 0 20 19"
-   sodipodi:docname="mag_sel.svg"
-   inkscape:version="0.92.5 (2060ec1f9f, 2020-04-08)">
-  <metadata
-     id="metadata8">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
+  >
   <defs
      id="defs6" />
-  <sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1920"
-     inkscape:window-height="2096"
-     id="namedview4"
-     showgrid="false"
-     fit-margin-top="0"
-     fit-margin-left="0"
-     fit-margin-right="0"
-     fit-margin-bottom="0"
-     inkscape:zoom="32"
-     inkscape:cx="5.9792688"
-     inkscape:cy="1.1436277"
-     inkscape:window-x="1920"
-     inkscape:window-y="27"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg2" />
   <circle
      style="fill:#000000;fill-opacity:0;stroke:#656565;stroke-width:1.4;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none"
      id="path4611"
@@ -64,11 +22,10 @@
      style="fill:#656565;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
      d="M 11,7 13.5,10 16,7 Z"
      id="path4609"
-     inkscape:connector-curvature="0"
-     sodipodi:nodetypes="cccc" />
+     />
   <path
      style="fill:none;stroke:#656565;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
      d="m 8.1085854,11.109059 2.7823556,2.782356"
      id="path4630"
-     inkscape:connector-curvature="0" />
+     />
 </svg>

doc/html/search/mag_seld.svg

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "https://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg
+   xmlns="http://www.w3.org/2000/svg"
+   version="1.1"
+   id="svg2"
+   width="20"
+   height="19"
+   viewBox="0 0 20 19"
+  >
+  <defs
+     id="defs6" />
+  <circle
+     style="fill:#000000;fill-opacity:0;stroke:#c5C5C5;stroke-width:1.4;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none"
+     id="path4611"
+     cx="5.5"
+     cy="8.5"
+     r="3.5" />
+  <path
+     style="fill:#c5C5C5;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     d="M 11,7 13.5,10 16,7 Z"
+     id="path4609"
+     />
+  <path
+     style="fill:none;stroke:#c5C5C5;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+     d="m 8.1085854,11.109059 2.7823556,2.782356"
+     id="path4630"
+     />
+</svg>

doc/html/search/nomatches.html

@@ -1,12 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html><head><title></title>
-<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<link rel="stylesheet" type="text/css" href="search.css"/>
-<script type="text/javascript" src="search.js"></script>
-</head>
-<body class="SRPage">
-<div id="SRIndex">
-<div class="SRStatus" id="NoMatches">No Matches</div>
-</div>
-</body>
-</html>

doc/html/search/search.css

@@ -1,10 +1,33 @@
-/*---------------- Search Box */
+/*---------------- Search Box positioning */
+
+#main-menu > li:last-child {
+    /* This <li> object is the parent of the search bar */
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    height: 36px;
+    margin-right: 1em;
+}
+
+/*---------------- Search box styling */
+
+.SRPage * {
+    font-weight: normal;
+    line-height: normal;
+}
+
+dark-mode-toggle {
+    margin-left: 5px;
+    display: flex;
+    float: right;
+}
 
 #MSearchBox {
+    display: inline-block;
     white-space : nowrap;
-    background: white;
+    background: var(--search-background-color);
     border-radius: 0.65em;
-    box-shadow: inset 0.5px 0.5px 3px 0px #555;
+    box-shadow: var(--search-box-shadow);
     z-index: 102;
 }
 
@@ -17,28 +40,47 @@
 #MSearchSelect {
     display: inline-block;
     vertical-align: middle;
-    height: 1.4em;
-    padding: 0 0 0 0.3em;
-    margin: 0;
+    width: 20px;
+    height: 19px;
+    background-image: var(--search-magnification-select-image);
+    margin: 0 0 0 0.3em;
+    padding: 0;
 }
 
+#MSearchSelectExt {
+    display: inline-block;
+    vertical-align: middle;
+    width: 10px;
+    height: 19px;
+    background-image: var(--search-magnification-image);
+    margin: 0 0 0 0.5em;
+    padding: 0;
+}
+
+
 #MSearchField {
     display: inline-block;
     vertical-align: middle;
     width: 7.5em;
-    height: 1.1em;
+    height: 19px;
     margin: 0 0.15em;
     padding: 0;
     line-height: 1em;
     border:none;
-    color: #909090;
+    color: var(--search-foreground-color);
     outline: none;
-    font-family: Arial, Verdana, sans-serif;
+    font-family: var(--font-family-search);
     -webkit-border-radius: 0px;
     border-radius: 0px;
     background: none;
 }
 
+@media(hover: none) {
+    /* to avoid zooming on iOS */
+    #MSearchField {
+        font-size: 16px;
+    }
+}
 
 #MSearchBox .right {
     display: inline-block;
@@ -59,23 +101,15 @@
 }
 
 #MSearchCloseImg {
-    height: 1.4em;
     padding: 0.3em;
     margin: 0;
 }
 
 .MSearchBoxActive #MSearchField {
-    color: #000000;
+    color: var(--search-active-color);
 }
 
-#main-menu > li:last-child {
-    /* This <li> object is the parent of the search bar */
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    height: 36px;
-    margin-right: 1em;
-}
+
 
 /*---------------- Search filter selection */
 
@@ -83,8 +117,8 @@
     display: none;
     position: absolute;
     left: 0; top: 0;
-    border: 1px solid #90A5CE;
-    background-color: #F9FAFC;
+    border: 1px solid var(--search-filter-border-color);
+    background-color: var(--search-filter-background-color);
     z-index: 10001;
     padding-top: 4px;
     padding-bottom: 4px;
@@ -97,7 +131,7 @@
 }
 
 .SelectItem {
-    font: 8pt Arial, Verdana, sans-serif;
+    font: 8pt var(--font-family-search);
     padding-left:  2px;
     padding-right: 12px;
     border: 0px;
@@ -105,7 +139,7 @@
 
 span.SelectionMark {
     margin-right: 4px;
-    font-family: monospace;
+    font-family: var(--font-family-monospace);
     outline-style: none;
     text-decoration: none;
 }
@@ -113,7 +147,7 @@ span.SelectionMark {
 a.SelectItem {
     display: block;
     outline-style: none;
-    color: #000000; 
+    color: var(--search-filter-foreground-color);
     text-decoration: none;
     padding-left:   6px;
     padding-right: 12px;
@@ -121,14 +155,14 @@ a.SelectItem {
 
 a.SelectItem:focus,
 a.SelectItem:active {
-    color: #000000; 
+    color: var(--search-filter-foreground-color);
     outline-style: none;
     text-decoration: none;
 }
 
 a.SelectItem:hover {
-    color: #FFFFFF;
-    background-color: #3D578C;
+    color: var(--search-filter-highlight-text-color);
+    background-color: var(--search-filter-highlight-bg-color);
     outline-style: none;
     text-decoration: none;
     cursor: pointer;
@@ -138,7 +172,7 @@ a.SelectItem:hover {
 /*---------------- Search results window */
 
 iframe#MSearchResults {
-    width: 60ex;
+    /*width: 60ex;*/
     height: 15em;
 }
 
@@ -146,9 +180,12 @@ iframe#MSearchResults {
     display: none;
     position: absolute;
     left: 0; top: 0;
-    border: 1px solid #000;
-    background-color: #EEF1F7;
+    border: 1px solid var(--search-results-border-color);
+    background-color: var(--search-results-background-color);
     z-index:10000;
+    width: 300px;
+    height: 400px;
+    overflow: auto;
 }
 
 /* ----------------------------------- */
@@ -156,7 +193,6 @@ iframe#MSearchResults {
 
 #SRIndex {
     clear:both; 
-    padding-bottom: 15px;
 }
 
 .SREntry {
@@ -169,8 +205,9 @@ iframe#MSearchResults {
     padding: 1px 5px;
 }
 
-body.SRPage {
+div.SRPage {
     margin: 5px 2px;
+    background-color: var(--search-results-background-color);
 }
 
 .SRChildren {
@@ -182,17 +219,18 @@ body.SRPage {
 }
 
 .SRSymbol {
-    font-weight: bold; 
-    color: #425E97;
-    font-family: Arial, Verdana, sans-serif;
+    font-weight: bold;
+    color: var(--search-results-foreground-color);
+    font-family: var(--font-family-search);
     text-decoration: none;
     outline: none;
 }
 
 a.SRScope {
     display: block;
-    color: #425E97; 
-    font-family: Arial, Verdana, sans-serif;
+    color: var(--search-results-foreground-color);
+    font-family: var(--font-family-search);
+    font-size: 8pt;
     text-decoration: none;
     outline: none;
 }
@@ -204,33 +242,31 @@ a.SRScope:focus, a.SRScope:active {
 
 span.SRScope {
     padding-left: 4px;
+    font-family: var(--font-family-search);
 }
 
 .SRPage .SRStatus {
     padding: 2px 5px;
     font-size: 8pt;
     font-style: italic;
+    font-family: var(--font-family-search);
 }
 
 .SRResult {
     display: none;
 }
 
-DIV.searchresults {
+div.searchresults {
     margin-left: 10px;
     margin-right: 10px;
 }
 
 /*---------------- External search page results */
 
-.searchresult {
-    background-color: #F0F3F8;
-}
-
 .pages b {
    color: white;
    padding: 5px 5px 3px 5px;
-   background-image: url("../tab_a.png");
+   background-image: var(--nav-gradient-active-image-parent);
    background-repeat: repeat-x;
    text-shadow: 0 1px 1px #000000;
 }

doc/html/search/search.js

@@ -73,6 +73,8 @@ function getYPos(item)
   return y;
 }
 
+var searchResults = new SearchResults("searchResults");
+
 /* A class handling everything associated with the search panel.
 
    Parameters:
@@ -80,9 +82,10 @@ function getYPos(item)
           storing this instance.  Is needed to be able to set timeouts.
    resultPath - path to use for external files
 */
-function SearchBox(name, resultsPath, inFrame, label)
+function SearchBox(name, resultsPath, extension)
 {
   if (!name || !resultsPath) {  alert("Missing parameters to SearchBox."); }
+  if (!extension || extension == "") { extension = ".html"; }
 
   // ---------- Instance variables
   this.name                  = name;
@@ -95,8 +98,7 @@ function SearchBox(name, resultsPath, inFrame, label)
   this.hideTimeout           = 0;
   this.searchIndex           = 0;
   this.searchActive          = false;
-  this.insideFrame           = inFrame;
-  this.searchLabel           = label;
+  this.extension             = extension;
 
   // ----------- DOM Elements
 
@@ -134,30 +136,14 @@ function SearchBox(name, resultsPath, inFrame, label)
     var searchSelectWindow = this.DOMSearchSelectWindow();
     var searchField        = this.DOMSearchSelect();
 
-    if (this.insideFrame)
-    {
-      var left = getXPos(searchField);
-      var top  = getYPos(searchField);
-      left += searchField.offsetWidth + 6;
-      top += searchField.offsetHeight;
+    var left = getXPos(searchField);
+    var top  = getYPos(searchField);
+    top += searchField.offsetHeight;
 
-      // show search selection popup
-      searchSelectWindow.style.display='block';
-      left -= searchSelectWindow.offsetWidth;
-      searchSelectWindow.style.left =  left + 'px';
-      searchSelectWindow.style.top  =  top  + 'px';
-    }
-    else
-    {
-      var left = getXPos(searchField);
-      var top  = getYPos(searchField);
-      top += searchField.offsetHeight;
-
-      // show search selection popup
-      searchSelectWindow.style.display='block';
-      searchSelectWindow.style.left =  left + 'px';
-      searchSelectWindow.style.top  =  top  + 'px';
-    }
+    // show search selection popup
+    searchSelectWindow.style.display='block';
+    searchSelectWindow.style.left =  left + 'px';
+    searchSelectWindow.style.top  =  top  + 'px';
 
     // stop selection hide timer
     if (this.hideTimeout)
@@ -170,7 +156,7 @@ function SearchBox(name, resultsPath, inFrame, label)
 
   this.OnSearchSelectHide = function()
   {
-    this.hideTimeout = setTimeout(this.name +".CloseSelectionWindow()",
+    this.hideTimeout = setTimeout(this.CloseSelectionWindow.bind(this),
                                   this.closeSelectionTimeout);
   }
 
@@ -203,11 +189,13 @@ function SearchBox(name, resultsPath, inFrame, label)
       }
       else
       {
-        window.frames.MSearchResults.postMessage("take_focus", "*");
+        var elem = searchResults.NavNext(0);
+        if (elem) elem.focus();
       }
     }
     else if (e.keyCode==27) // Escape out of the search field
     {
+      e.stopPropagation();
       this.DOMSearchField().blur();
       this.DOMPopupSearchResultsWindow().style.display = 'none';
       this.DOMSearchClose().style.display = 'none';
@@ -224,7 +212,7 @@ function SearchBox(name, resultsPath, inFrame, label)
       if (searchValue != "") // non-empty search
       {
         // set timer for search update
-        this.keyTimeout = setTimeout(this.name + '.Search()',
+        this.keyTimeout = setTimeout(this.Search.bind(this),
                                      this.keyTimeoutLength);
       }
       else // empty search field
@@ -302,6 +290,7 @@ function SearchBox(name, resultsPath, inFrame, label)
     }
     else if (e.keyCode==13 || e.keyCode==27)
     {
+      e.stopPropagation();
       this.OnSelectItem(this.searchIndex);
       this.CloseSelectionWindow();
       this.DOMSearchField().focus();
@@ -339,55 +328,70 @@ function SearchBox(name, resultsPath, inFrame, label)
       idxChar = searchValue.substr(0, 2);
     }
 
-    var resultsPage;
-    var resultsPageWithSearch;
-    var hasResultsPage;
+    var jsFile;
 
     var idx = indexSectionsWithContent[this.searchIndex].indexOf(idxChar);
     if (idx!=-1)
     {
        var hexCode=idx.toString(16);
-       resultsPage = this.resultsPath + '/' + indexSectionNames[this.searchIndex] + '_' + hexCode + '.html';
-       resultsPageWithSearch = resultsPage+'?'+escape(searchValue);
-       hasResultsPage = true;
-    }
-    else // nothing available for this search term
-    {
-       resultsPage = this.resultsPath + '/nomatches.html';
-       resultsPageWithSearch = resultsPage;
-       hasResultsPage = false;
+       jsFile = this.resultsPath + indexSectionNames[this.searchIndex] + '_' + hexCode + '.js';
+    }
+
+    var loadJS = function(url, impl, loc){
+      var scriptTag = document.createElement('script');
+      scriptTag.src = url;
+      scriptTag.onload = impl;
+      scriptTag.onreadystatechange = impl;
+      loc.appendChild(scriptTag);
     }
 
-    window.frames.MSearchResults.location = resultsPageWithSearch;
     var domPopupSearchResultsWindow = this.DOMPopupSearchResultsWindow();
+    var domSearchBox = this.DOMSearchBox();
+    var domPopupSearchResults = this.DOMPopupSearchResults();
+    var domSearchClose = this.DOMSearchClose();
+    var resultsPath = this.resultsPath;
 
-    if (domPopupSearchResultsWindow.style.display!='block')
-    {
-       var domSearchBox = this.DOMSearchBox();
-       this.DOMSearchClose().style.display = 'inline-block';
-       if (this.insideFrame)
-       {
-         var domPopupSearchResults = this.DOMPopupSearchResults();
-         domPopupSearchResultsWindow.style.position = 'relative';
-         domPopupSearchResultsWindow.style.display  = 'block';
-         var width = document.body.clientWidth - 8; // the -8 is for IE :-(
-         domPopupSearchResultsWindow.style.width    = width + 'px';
-         domPopupSearchResults.style.width          = width + 'px';
-       }
-       else
-       {
-         var domPopupSearchResults = this.DOMPopupSearchResults();
-         var left = getXPos(domSearchBox) + 150; // domSearchBox.offsetWidth;
-         var top  = getYPos(domSearchBox) + 20;  // domSearchBox.offsetHeight + 1;
-         domPopupSearchResultsWindow.style.display = 'block';
-         left -= domPopupSearchResults.offsetWidth;
-         domPopupSearchResultsWindow.style.top     = top  + 'px';
-         domPopupSearchResultsWindow.style.left    = left + 'px';
-       }
+    var handleResults = function() {
+      document.getElementById("Loading").style.display="none";
+      if (typeof searchData !== 'undefined') {
+        createResults(resultsPath);
+        document.getElementById("NoMatches").style.display="none";
+      }
+ 
+      if (idx!=-1) {
+        searchResults.Search(searchValue);
+      } else { // no file with search results => force empty search results
+        searchResults.Search('====');
+      }
+
+      if (domPopupSearchResultsWindow.style.display!='block')
+      {
+        domSearchClose.style.display = 'inline-block';
+        var left = getXPos(domSearchBox) + 150;
+        var top  = getYPos(domSearchBox) + 20;
+        domPopupSearchResultsWindow.style.display = 'block';
+        left -= domPopupSearchResults.offsetWidth;
+        var maxWidth  = document.body.clientWidth;
+        var maxHeight = document.body.clientHeight;
+        var width = 300;
+        if (left<10) left=10;
+        if (width+left+8>maxWidth) width=maxWidth-left-8;
+        var height = 400;
+        if (height+top+8>maxHeight) height=maxHeight-top-8;
+        domPopupSearchResultsWindow.style.top     = top  + 'px';
+        domPopupSearchResultsWindow.style.left    = left + 'px';
+        domPopupSearchResultsWindow.style.width   = width + 'px';
+        domPopupSearchResultsWindow.style.height  = height + 'px';
+      }
+    }
+
+    if (jsFile) {
+      loadJS(jsFile, handleResults, this.DOMPopupSearchResultsWindow());
+    } else {
+      handleResults();
     }
 
     this.lastSearchValue = searchValue;
-    this.lastResultsPage = resultsPage;
   }
 
   // -------- Activation Functions
@@ -401,22 +405,15 @@ function SearchBox(name, resultsPath, inFrame, label)
        )
     {
       this.DOMSearchBox().className = 'MSearchBoxActive';
-
-      var searchField = this.DOMSearchField();
-
-      if (searchField.value == this.searchLabel) // clear "Search" term upon entry
-      {
-        searchField.value = '';
-        this.searchActive = true;
-      }
+      this.searchActive = true;
     }
     else if (!isActive) // directly remove the panel
     {
       this.DOMSearchBox().className = 'MSearchBoxInactive';
-      this.DOMSearchField().value   = this.searchLabel;
       this.searchActive             = false;
       this.lastSearchValue          = ''
       this.lastResultsPage          = '';
+      this.DOMSearchField().value   = '';
     }
   }
 }
@@ -439,12 +436,12 @@ function SearchResults(name)
 
       while (element && element!=parentElement)
       {
-        if (element.nodeName == 'DIV' && element.className == 'SRChildren')
+        if (element.nodeName.toLowerCase() == 'div' && element.className == 'SRChildren')
         {
           return element;
         }
 
-        if (element.nodeName == 'DIV' && element.hasChildNodes())
+        if (element.nodeName.toLowerCase() == 'div' && element.hasChildNodes())
         {
            element = element.firstChild;
         }
@@ -645,7 +642,7 @@ function SearchResults(name)
         }
         else // return focus to search field
         {
-           parent.document.getElementById("MSearchField").focus();
+           document.getElementById("MSearchField").focus();
         }
       }
       else if (this.lastKey==40) // Down
@@ -675,8 +672,9 @@ function SearchResults(name)
       }
       else if (this.lastKey==27) // Escape
       {
-        parent.searchBox.CloseResultsWindow();
-        parent.document.getElementById("MSearchField").focus();
+        e.stopPropagation();
+        searchBox.CloseResultsWindow();
+        document.getElementById("MSearchField").focus();
       }
       else if (this.lastKey==13) // Enter
       {
@@ -718,8 +716,9 @@ function SearchResults(name)
       }
       else if (this.lastKey==27) // Escape
       {
-        parent.searchBox.CloseResultsWindow();
-        parent.document.getElementById("MSearchField").focus();
+        e.stopPropagation();
+        searchBox.CloseResultsWindow();
+        document.getElementById("MSearchField").focus();
       }
       else if (this.lastKey==13) // Enter
       {
@@ -742,9 +741,10 @@ function setClassAttr(elem,attr)
   elem.setAttribute('className',attr);
 }
 
-function createResults()
+function createResults(resultsPath)
 {
   var results = document.getElementById("SRResults");
+  results.innerHTML = '';
   for (var e=0; e<searchData.length; e++)
   {
     var id = searchData[e][0];
@@ -761,11 +761,16 @@ function createResults()
     srEntry.appendChild(srLink);
     if (searchData[e][1].length==2) // single result
     {
-      srLink.setAttribute('href',searchData[e][1][1][0]);
+      srLink.setAttribute('href',resultsPath+searchData[e][1][1][0]);
+      srLink.setAttribute('onclick','searchBox.CloseResultsWindow()');
       if (searchData[e][1][1][1])
       {
        srLink.setAttribute('target','_parent');
       }
+      else
+      {
+       srLink.setAttribute('target','_blank');
+      }
       var srScope = document.createElement('span');
       setClassAttr(srScope,'SRScope');
       srScope.innerHTML = searchData[e][1][1][2];
@@ -782,11 +787,16 @@ function createResults()
         srChild.setAttribute('id','Item'+e+'_c'+c);
         setKeyActions(srChild,'return searchResults.NavChild(event,'+e+','+c+')');
         setClassAttr(srChild,'SRScope');
-        srChild.setAttribute('href',searchData[e][1][c+1][0]);
+        srChild.setAttribute('href',resultsPath+searchData[e][1][c+1][0]);
+        srChild.setAttribute('onclick','searchBox.CloseResultsWindow()');
         if (searchData[e][1][c+1][1])
         {
          srChild.setAttribute('target','_parent');
         }
+        else
+        {
+         srChild.setAttribute('target','_blank');
+        }
         srChild.innerHTML = searchData[e][1][c+1][2];
         srChildren.appendChild(srChild);
       }
@@ -800,6 +810,7 @@ function createResults()
 function init_search()
 {
   var results = document.getElementById("MSearchSelectWindow");
+  results.tabIndex=0;
   for (var key in indexSectionLabels)
   {
     var link = document.createElement('a');
@@ -810,5 +821,20 @@ function init_search()
     results.appendChild(link);
   }
   searchBox.OnSelectItem(0);
+
+  var input = document.getElementById("MSearchSelect");
+  var searchSelectWindow = document.getElementById("MSearchSelectWindow");
+  input.tabIndex=0;
+  input.addEventListener("keydown", function(event) {
+    if (event.keyCode==13 || event.keyCode==40) {
+      event.preventDefault();
+      if (searchSelectWindow.style.display == 'block') {
+        searchBox.CloseSelectionWindow();
+      } else {
+        searchBox.OnSearchSelectShow();
+        searchBox.DOMSearchSelectWindow().focus();
+      }
+    }
+  });
 }
 /* @license-end */

doc/html/search/searchdata.js

@@ -1,6 +1,6 @@
 var indexSectionsWithContent =
 {
-  0: "cdhnortwxy",
+  0: "cdfhinortwxy",
   1: "t",
   2: "t",
   3: "cdhnortwxy",

doc/html/search/typedefs_0.html

@@ -1,36 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html><head><title></title>
-<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<meta name="generator" content="Doxygen 1.8.20"/>
-<link rel="stylesheet" type="text/css" href="search.css"/>
-<script type="text/javascript" src="typedefs_0.js"></script>
-<script type="text/javascript" src="search.js"></script>
-</head>
-<body class="SRPage">
-<div id="SRIndex">
-<div class="SRStatus" id="Loading">Loading...</div>
-<div id="SRResults"></div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-createResults();
-/* @license-end */
---></script>
-<div class="SRStatus" id="Searching">Searching...</div>
-<div class="SRStatus" id="NoMatches">No Matches</div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-document.getElementById("Loading").style.display="none";
-document.getElementById("NoMatches").style.display="none";
-var searchResults = new SearchResults("searchResults");
-searchResults.Search();
-window.addEventListener("message", function(event) {
-  if (event.data == "take_focus") {
-    var elem = searchResults.NavNext(0);
-    if (elem) elem.focus();
-  }
-});
-/* @license-end */
---></script>
-</div>
-</body>
-</html>

doc/html/search/typedefs_0.js

@@ -1,5 +1,5 @@
 var searchData=
 [
-  ['tjhandle_160',['tjhandle',['../group___turbo_j_p_e_g.html#ga758d2634ecb4949de7815cba621f5763',1,'turbojpeg.h']]],
-  ['tjtransform_161',['tjtransform',['../group___turbo_j_p_e_g.html#ga504805ec0161f1b505397ca0118bf8fd',1,'turbojpeg.h']]]
+  ['tjhandle_0',['tjhandle',['../group___turbo_j_p_e_g.html#ga758d2634ecb4949de7815cba621f5763',1,'turbojpeg.h']]],
+  ['tjtransform_1',['tjtransform',['../group___turbo_j_p_e_g.html#ga504805ec0161f1b505397ca0118bf8fd',1,'turbojpeg.h']]]
 ];

doc/html/search/variables_0.html

@@ -1,36 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html><head><title></title>
-<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<meta name="generator" content="Doxygen 1.8.20"/>
-<link rel="stylesheet" type="text/css" href="search.css"/>
-<script type="text/javascript" src="variables_0.js"></script>
-<script type="text/javascript" src="search.js"></script>
-</head>
-<body class="SRPage">
-<div id="SRIndex">
-<div class="SRStatus" id="Loading">Loading...</div>
-<div id="SRResults"></div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-createResults();
-/* @license-end */
---></script>
-<div class="SRStatus" id="Searching">Searching...</div>
-<div class="SRStatus" id="NoMatches">No Matches</div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-document.getElementById("Loading").style.display="none";
-document.getElementById("NoMatches").style.display="none";
-var searchResults = new SearchResults("searchResults");
-searchResults.Search();
-window.addEventListener("message", function(event) {
-  if (event.data == "take_focus") {
-    var elem = searchResults.NavNext(0);
-    if (elem) elem.focus();
-  }
-});
-/* @license-end */
---></script>
-</div>
-</body>
-</html>

doc/html/search/variables_0.js

@@ -1,4 +1,4 @@
 var searchData=
 [
-  ['customfilter_142',['customFilter',['../structtjtransform.html#afd7fc262df33f741e120ef4183202ef5',1,'tjtransform']]]
+  ['customfilter_0',['customFilter',['../structtjtransform.html#a0dc7697d59a7abe48afc629e96cbc1d2',1,'tjtransform']]]
 ];

doc/html/search/variables_1.html

@@ -1,36 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html><head><title></title>
-<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
-<meta name="generator" content="Doxygen 1.8.20"/>
-<link rel="stylesheet" type="text/css" href="search.css"/>
-<script type="text/javascript" src="variables_1.js"></script>
-<script type="text/javascript" src="search.js"></script>
-</head>
-<body class="SRPage">
-<div id="SRIndex">
-<div class="SRStatus" id="Loading">Loading...</div>
-<div id="SRResults"></div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-createResults();
-/* @license-end */
---></script>
-<div class="SRStatus" id="Searching">Searching...</div>
-<div class="SRStatus" id="NoMatches">No Matches</div>
-<script type="text/javascript"><!--
-/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
-document.getElementById("Loading").style.display="none";
-document.getElementById("NoMatches").style.display="none";
-var searchResults = new SearchResults("searchResults");
-searchResults.Search();
-window.addEventListener("message", function(event) {
-  if (event.data == "take_focus") {
-    var elem = searchResults.NavNext(0);
-    if (elem) elem.focus();
-  }
-});
-/* @license-end */
---></script>
-</div>
-</body>
-</html>