ARM64 NEON: Fix another ABI conformance issue

Based on
98a5a9dc89
with wordsmithing by DRC.

In the AArch64 ABI, as in many others, it's forbidden to read/store data
below the stack pointer.  Some SIMD functions were doing just that
(stack pointer misuse) when trying to preserve callee-saved registers,
and this resulted in those registers being restored with incorrect
contents under certain circumstances.

This patch fixes that behavior, and callee-saved registers are now
stored above the stack pointer throughout the function call.  The patch
also removes register saving in places where it is unnecessary for this
ABI, or it makes use of unused scratch regiters instead of callee-saved
registers.

Fixes #97.  Closes #101.

Refer also to https://bugzilla.redhat.com/show_bug.cgi?id=1368569

.gitauthors

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

.gitignore

@@ -1,45 +1,14 @@
 .DS_Store
 Makefile.in
-Makefile
+aclocal.m4
-/CMakeFiles
+ar-lib
-/autom4te.cache
+autom4te.cache
-/aclocal.m4
+compile
-/compile
+config.guess
-/configure
+config.h.in
-/depcomp
+config.sub
-/install-sh
+configure
-/libtool
+depcomp
-/missing
+install-sh
-/stamp-h*
+ltmain.sh
-/java/classnoinst.stamp
+missing
-/pkgscripts/
-/jconfig.h
-/jconfigint.h
-/config.guess
-/config.h
-/config.h.in
-/config.log
-/config.status
-/config.sub
-/ltmain.sh
-/ar-lib
-/libjpeg.map
-/.libs/
-/simd/.libs/
-/simd/jsimdcfg.inc
-*.o
-*.lo
-*.la
-/cjpeg
-/djpeg
-/jcstest
-/jpegtran
-/jpegyuv
-/md5/md5cmp
-/rdjpgcom
-/test_enc_*
-/tjbench
-/tjbenchtest
-/tjunittest
-/wrjpgcom
-/yuvjpeg

BUILDING.md

@@ -323,11 +323,6 @@ Set the following shell variables for simplicity:
     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"
@@ -399,8 +394,8 @@ 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
+Once built, lipo can be used to combine the ARMv7, v7s, and/or v8 variants into
-into a universal library.
+a universal library.
 
 
 ### Building libjpeg-turbo for Android
@@ -782,7 +777,6 @@ 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}]
@@ -791,19 +785,17 @@ On OS X systems, this creates a Macintosh package and disk image in which the
 libjpeg-turbo 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
+configure ARMv7, ARMv7s, and/or ARMv8 out-of-tree builds of libjpeg-turbo (see
-libjpeg-turbo (see "Building libjpeg-turbo for iOS" above.)  If you are
+"Building libjpeg-turbo for iOS" above.)  If you are building an x86-64 version
-building an x86-64 version of libjpeg-turbo, you should configure a 32-bit
+of libjpeg-turbo, you should configure a 32-bit out-of-tree build as well.
-out-of-tree build as well.  Next, build libjpeg-turbo as you would normally,
+Next, build libjpeg-turbo as you would normally, using an out-of-tree build.
-using an out-of-tree build.  When it is built, run `make iosdmg` from the
+When it is built, run `make iosdmg` from the build directory.  The build system
-build directory.  The build system will look for the ARMv6 build under
+will look for the ARMv7 build under *{source_directory}*/iosarmv7 by default,
-*{source_directory}*/iosarmv6 by default, the ARMv7 build under
+the ARMv7s build under *{source_directory}*/iosarmv7s by default, the ARMv8
-*{source_directory}*/iosarmv7 by default, the ARMv7s build under
+build under *{source_directory}*/iosarmv8 by default, and (if applicable) the
-*{source_directory}*/iosarmv7s by default, the ARMv8 build under
+32-bit build under *{source_directory}*/osxx86 by default, but you can override
-*{source_directory}*/iosarmv8 by default, and (if applicable) the 32-bit build
+this by setting the `BUILDDIR32`, `BUILDDIRARMV7`, `BUILDDIRARMV7S`, and/or
-under *{source_directory}*/osxx86 by default, but you can override this by
+`BUILDDIRARMV8` variables on the `make` command line as shown above.
-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

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.

CMakeLists.txt

@@ -8,8 +8,26 @@ if(POLICY CMP0022)
   cmake_policy(SET CMP0022 OLD)
 endif()
 
-project(mozjpeg C)
+project(libjpeg-turbo C)
-set(VERSION 3.2)
+set(VERSION 1.5.1)
+string(REPLACE "." ";" VERSION_TRIPLET ${VERSION})
+list(GET VERSION_TRIPLET 0 VERSION_MAJOR)
+list(GET VERSION_TRIPLET 1 VERSION_MINOR)
+list(GET VERSION_TRIPLET 2 VERSION_REVISION)
+function(pad_number NUMBER OUTPUT_LEN)
+  string(LENGTH "${${NUMBER}}" INPUT_LEN)
+  if(INPUT_LEN LESS OUTPUT_LEN)
+    math(EXPR ZEROES "${OUTPUT_LEN} - ${INPUT_LEN} - 1")
+    set(NUM ${${NUMBER}})
+    foreach(C RANGE ${ZEROES})
+      set(NUM "0${NUM}")
+    endforeach()
+    set(${NUMBER} ${NUM} PARENT_SCOPE)
+  endif()
+endfunction()
+pad_number(VERSION_MINOR 3)
+pad_number(VERSION_REVISION 3)
+set(LIBJPEG_TURBO_VERSION_NUMBER ${VERSION_MAJOR}${VERSION_MINOR}${VERSION_REVISION})
 
 if(NOT WIN32)
   message(FATAL_ERROR "Platform not supported by this build system.  Use autotools instead.")
@@ -34,10 +52,10 @@ endif()
 message(STATUS "VERSION = ${VERSION}, BUILD = ${BUILD}")
 
 option(WITH_SIMD "Include SIMD extensions" TRUE)
-option(WITH_ARITH_ENC "Include arithmetic encoding support" TRUE)
+option(WITH_ARITH_ENC "Include arithmetic encoding support when emulating the libjpeg v6b API/ABI" TRUE)
-option(WITH_ARITH_DEC "Include arithmetic decoding support" TRUE)
+option(WITH_ARITH_DEC "Include arithmetic decoding support when emulating the libjpeg v6b API/ABI" TRUE)
-option(WITH_JPEG7 "Emulate libjpeg v7 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b)" FALSE)
+option(WITH_JPEG7 "Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b)" FALSE)
-option(WITH_JPEG8 "Emulate libjpeg v8 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b)" FALSE)
+option(WITH_JPEG8 "Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b)" FALSE)
 option(WITH_MEM_SRCDST "Include in-memory source/destination manager functions when emulating the libjpeg v6b or v7 API/ABI" TRUE)
 option(WITH_TURBOJPEG "Include the TurboJPEG wrapper library and associated test programs" TRUE)
 option(WITH_JAVA "Build Java wrapper for the TurboJPEG library" FALSE)
@@ -159,7 +177,7 @@ if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
     set(CMAKE_INSTALL_PREFIX_DEFAULT ${CMAKE_INSTALL_PREFIX_DEFAULT}64)
   endif()
   set(CMAKE_INSTALL_PREFIX "c:/${CMAKE_INSTALL_PREFIX_DEFAULT}" CACHE PATH
-    "Directory into which to install mozjpeg (default: c:/${CMAKE_INSTALL_PREFIX_DEFAULT})"
+    "Directory into which to install libjpeg-turbo (default: c:/${CMAKE_INSTALL_PREFIX_DEFAULT})"
     FORCE)
 endif()
 
@@ -168,7 +186,7 @@ message(STATUS "Install directory = ${CMAKE_INSTALL_PREFIX}")
 configure_file(win/jconfig.h.in jconfig.h)
 configure_file(win/jconfigint.h.in jconfigint.h)
 
-include_directories("${CMAKE_CURRENT_BINARY_DIR}" "${CMAKE_SOURCE_DIR}")
+include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
 
 string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UC)
 
@@ -191,13 +209,13 @@ endif()
 # Targets
 #
 
-set(JPEG_SOURCES jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jcext.c
+set(JPEG_SOURCES jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c
-  jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c
+  jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c jcphuff.c
-  jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c jdatadst.c
+  jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c jdatadst.c jdatasrc.c
-  jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c
+  jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c
-  jdmarker.c jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c
+  jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c jerror.c
-  jerror.c jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c
+  jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c
-  jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c)
+  jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c)
 
 if(WITH_ARITH_ENC OR WITH_ARITH_DEC)
   set(JPEG_SOURCES ${JPEG_SOURCES} jaricom.c)
@@ -301,7 +319,7 @@ else()
 endif()
 
 if(ENABLE_STATIC)
-  add_executable(cjpeg-static cjpeg.c cdjpeg.c rdgif.c rdppm.c rdjpeg.c rdswitch.c
+  add_executable(cjpeg-static cjpeg.c cdjpeg.c rdgif.c rdppm.c rdswitch.c
     ${CJPEG_BMP_SOURCES})
   set_property(TARGET cjpeg-static PROPERTY COMPILE_FLAGS ${COMPILE_FLAGS})
   target_link_libraries(cjpeg-static jpeg-static)
@@ -489,7 +507,7 @@ foreach(libtype ${TEST_LIBTYPES})
 
   # CC: null  SAMP: fullsize  FDCT: islow  ENT: huff
   add_test(cjpeg${suffix}-rgb-islow
-    ${dir}cjpeg${suffix} -revert -rgb -dct int
+    ${dir}cjpeg${suffix} -rgb -dct int
       -outfile testout_rgb_islow.jpg ${TESTIMAGES}/testorig.ppm)
   add_test(cjpeg${suffix}-rgb-islow-cmp
     ${MD5CMP} ${MD5_JPEG_RGB_ISLOW} testout_rgb_islow.jpg)
@@ -519,7 +537,7 @@ foreach(libtype ${TEST_LIBTYPES})
 
   # CC: RGB->YCC  SAMP: fullsize/h2v1  FDCT: ifast  ENT: 2-pass huff
   add_test(cjpeg${suffix}-422-ifast-opt
-    ${dir}cjpeg${suffix} -revert -sample 2x1 -dct fast -opt
+    ${dir}cjpeg${suffix} -sample 2x1 -dct fast -opt
       -outfile testout_422_ifast_opt.jpg ${TESTIMAGES}/testorig.ppm)
   add_test(cjpeg${suffix}-422-ifast-opt-cmp
     ${MD5CMP} ${MD5_JPEG_422_IFAST_OPT} testout_422_ifast_opt.jpg)
@@ -556,7 +574,7 @@ foreach(libtype ${TEST_LIBTYPES})
 
   # CC: RGB->YCC  SAMP: fullsize/h2v2  FDCT: ifast  ENT: prog huff
   add_test(cjpeg${suffix}-420-q100-ifast-prog
-    ${dir}cjpeg${suffix} -revert -sample 2x2 -quality 100 -dct fast -prog
+    ${dir}cjpeg${suffix} -sample 2x2 -quality 100 -dct fast -prog
       -outfile testout_420_q100_ifast_prog.jpg ${TESTIMAGES}/testorig.ppm)
   add_test(cjpeg${suffix}-420-q100-ifast-prog-cmp
     ${MD5CMP} ${MD5_JPEG_420_IFAST_Q100_PROG} testout_420_q100_ifast_prog.jpg)
@@ -577,7 +595,7 @@ foreach(libtype ${TEST_LIBTYPES})
 
   # CC: RGB->Gray  SAMP: fullsize  FDCT: islow  ENT: huff
   add_test(cjpeg${suffix}-gray-islow
-    ${dir}cjpeg${suffix} -revert -gray -dct int
+    ${dir}cjpeg${suffix} -gray -dct int
       -outfile testout_gray_islow.jpg ${TESTIMAGES}/testorig.ppm)
   add_test(cjpeg${suffix}-gray-islow-cmp
     ${MD5CMP} ${MD5_JPEG_GRAY_ISLOW} testout_gray_islow.jpg)
@@ -622,7 +640,7 @@ foreach(libtype ${TEST_LIBTYPES})
 
   # CC: RGB->YCC  SAMP: fullsize/int  FDCT: float  ENT: prog huff
   add_test(cjpeg${suffix}-3x2-float-prog
-    ${dir}cjpeg${suffix} -revert -sample 3x2 -dct float -prog
+    ${dir}cjpeg${suffix} -sample 3x2 -dct float -prog
       -outfile testout_3x2_float_prog.jpg ${TESTIMAGES}/testorig.ppm)
   add_test(cjpeg${suffix}-3x2-float-prog-cmp
     ${MD5CMP} ${MD5_JPEG_3x2_FLOAT_PROG} testout_3x2_float_prog.jpg)
@@ -637,20 +655,20 @@ foreach(libtype ${TEST_LIBTYPES})
   if(WITH_ARITH_ENC)
     # CC: YCC->RGB  SAMP: fullsize/h2v2  FDCT: islow  ENT: arith
     add_test(cjpeg${suffix}-420-islow-ari
-      ${dir}cjpeg${suffix} -revert -dct int -arithmetic
+      ${dir}cjpeg${suffix} -dct int -arithmetic
         -outfile testout_420_islow_ari.jpg ${TESTIMAGES}/testorig.ppm)
     add_test(cjpeg${suffix}-420-islow-ari-cmp
       ${MD5CMP} ${MD5_JPEG_420_ISLOW_ARI} testout_420_islow_ari.jpg)
 
     add_test(jpegtran${suffix}-420-islow-ari
-      ${dir}jpegtran${suffix} -revert -arithmetic
+      ${dir}jpegtran${suffix} -arithmetic
         -outfile testout_420_islow_ari.jpg ${TESTIMAGES}/testimgint.jpg)
     add_test(jpegtran${suffix}-420-islow-ari-cmp
       ${MD5CMP} ${MD5_JPEG_420_ISLOW_ARI} testout_420_islow_ari.jpg)
 
     # CC: YCC->RGB  SAMP: fullsize  FDCT: islow  ENT: prog arith
     add_test(cjpeg${suffix}-444-islow-progari
-      ${dir}cjpeg${suffix} -revert -sample 1x1 -dct int -prog -arithmetic
+      ${dir}cjpeg${suffix} -sample 1x1 -dct int -prog -arithmetic
         -outfile testout_444_islow_progari.jpg ${TESTIMAGES}/testorig.ppm)
     add_test(cjpeg${suffix}-444-islow-progari-cmp
       ${MD5CMP} ${MD5_JPEG_444_ISLOW_PROGARI} testout_444_islow_progari.jpg)
@@ -665,7 +683,7 @@ foreach(libtype ${TEST_LIBTYPES})
       ${MD5CMP} ${MD5_PPM_420M_IFAST_ARI} testout_420m_ifast_ari.ppm)
 
     add_test(jpegtran${suffix}-420-islow
-      ${dir}jpegtran${suffix} -revert
+      ${dir}jpegtran${suffix}
         -outfile testout_420_islow.jpg ${TESTIMAGES}/testimgari.jpg)
     add_test(jpegtran${suffix}-420-islow-cmp
       ${MD5CMP} ${MD5_JPEG_420_ISLOW} testout_420_islow.jpg)
@@ -819,7 +837,7 @@ foreach(libtype ${TEST_LIBTYPES})
   endif()
 
   add_test(jpegtran${suffix}-crop
-    ${dir}jpegtran${suffix} -revert -crop 120x90+20+50 -transpose -perfect
+    ${dir}jpegtran${suffix} -crop 120x90+20+50 -transpose -perfect
       -outfile testout_crop.jpg ${TESTIMAGES}/${TESTORIG})
   add_test(jpegtran${suffix}-crop-cmp
     ${MD5CMP} ${MD5_JPEG_CROP} testout_crop.jpg)
@@ -848,7 +866,7 @@ endif()
 if(64BIT)
   set(INST_PLATFORM "${INST_PLATFORM} 64-bit")
   set(INST_NAME ${INST_NAME}64)
-  set(INST_REG_NAME "${INST_DIR}64")
+  set(INST_REG_NAME ${INST_DIR}64)
   set(INST_DEFS ${INST_DEFS} -DWIN64)
 endif()
 
@@ -862,18 +880,18 @@ else()
   set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=")
 endif()
 
-STRING(REGEX REPLACE "/" "\\\\" INST_DIR "${CMAKE_INSTALL_PREFIX}")
+STRING(REGEX REPLACE "/" "\\\\" INST_DIR ${CMAKE_INSTALL_PREFIX})
 
-configure_file(release/mozjpeg.nsi.in mozjpeg.nsi @ONLY)
+configure_file(release/libjpeg-turbo.nsi.in libjpeg-turbo.nsi @ONLY)
 
 if(WITH_JAVA)
   set(JAVA_DEPEND java)
 endif()
 add_custom_target(installer
-  makensis -nocd ${INST_DEFS} mozjpeg.nsi
+  makensis -nocd ${INST_DEFS} libjpeg-turbo.nsi
   DEPENDS jpeg jpeg-static turbojpeg turbojpeg-static rdjpgcom wrjpgcom
     cjpeg djpeg jpegtran tjbench ${JAVA_DEPEND}
-  SOURCES mozjpeg.nsi)
+  SOURCES libjpeg-turbo.nsi)
 
 if(WITH_TURBOJPEG)
   if(ENABLE_SHARED)
@@ -906,7 +924,7 @@ endif()
 
 install(TARGETS rdjpgcom wrjpgcom RUNTIME DESTINATION bin)
 
-install(FILES ${CMAKE_SOURCE_DIR}/README.ijg ${CMAKE_SOURCE_DIR}/README-mozilla.txt
+install(FILES ${CMAKE_SOURCE_DIR}/README.ijg ${CMAKE_SOURCE_DIR}/README.md
   ${CMAKE_SOURCE_DIR}/example.c ${CMAKE_SOURCE_DIR}/libjpeg.txt
   ${CMAKE_SOURCE_DIR}/structure.txt ${CMAKE_SOURCE_DIR}/usage.txt
   ${CMAKE_SOURCE_DIR}/wizard.txt

ChangeLog.md

@@ -1,3 +1,94 @@
+1.5.1
+=====
+
+### Significant changes relative to 1.5.0:
+
+1. Previously, the undocumented `JSIMD_FORCE*` environment variables could be
+used to force-enable a particular SIMD instruction set if multiple instruction
+sets were available on a particular platform.  On x86 platforms, where CPU
+feature detection is bulletproof and multiple SIMD instruction sets are
+available, it makes sense for those environment variables to allow forcing the
+use of an instruction set only if that instruction set is available.  However,
+since the ARM implementations of libjpeg-turbo can only use one SIMD
+instruction set, and since their feature detection code is less bulletproof
+(parsing /proc/cpuinfo), it makes sense for the `JSIMD_FORCENEON` environment
+variable to bypass the feature detection code and really force the use of NEON
+instructions.  A new environment variable (`JSIMD_FORCEDSPR2`) was introduced
+in the MIPS implementation for the same reasons, and the existing
+`JSIMD_FORCENONE` environment variable was extended to that implementation.
+These environment variables provide a workaround for those attempting to test
+ARM and MIPS builds of libjpeg-turbo in QEMU, which passes through
+/proc/cpuinfo from the host system.
+
+2. libjpeg-turbo previously assumed that AltiVec instructions were always
+available on PowerPC platforms, which led to "illegal instruction" errors when
+running on PowerPC chips that lack AltiVec support (such as the older 7xx/G3
+and newer e5500 series.)  libjpeg-turbo now examines /proc/cpuinfo on
+Linux/Android systems and enables AltiVec instructions only if the CPU supports
+them.  It also now provides two environment variables, `JSIMD_FORCEALTIVEC` and
+`JSIMD_FORCENONE`, to force-enable and force-disable AltiVec instructions in
+environments where /proc/cpuinfo is an unreliable means of CPU feature
+detection (such as when running in QEMU.)  On OS X, libjpeg-turbo continues to
+assume that AltiVec support is always available, which means that libjpeg-turbo
+cannot be used with G3 Macs unless you set the environment variable
+`JSIMD_FORCENONE` to `1`.
+
+3. Fixed an issue whereby 64-bit ARM (AArch64) builds of libjpeg-turbo would
+crash when built with recent releases of the Clang/LLVM compiler.  This was
+caused by an ABI conformance issue in some of libjpeg-turbo's 64-bit NEON SIMD
+routines.  Those routines were incorrectly using 64-bit instructions to
+transfer a 32-bit JDIMENSION argument, whereas the ABI allows the upper
+(unused) 32 bits of a 32-bit argument's register to be undefined.  The new
+Clang/LLVM optimizer uses load combining to transfer multiple adjacent 32-bit
+structure members into a single 64-bit register, and this exposed the ABI
+conformance issue.
+
+4. Fancy upsampling is now supported when decompressing JPEG images that use
+4:4:0 (h1v2) chroma subsampling.  These images are generated when losslessly
+rotating or transposing JPEG images that use 4:2:2 (h2v1) chroma subsampling.
+The h1v2 fancy upsampling algorithm is not currently SIMD-accelerated.
+
+5. If merged upsampling isn't SIMD-accelerated but YCbCr-to-RGB conversion is,
+then libjpeg-turbo will now disable merged upsampling when decompressing YCbCr
+JPEG images into RGB or extended RGB output images.  This significantly speeds
+up the decompression of 4:2:0 and 4:2:2 JPEGs on ARM platforms if fancy
+upsampling is not used (for example, if the `-nosmooth` option to djpeg is
+specified.)
+
+6. The TurboJPEG API will now decompress 4:2:2 and 4:4:0 JPEG images with
+2x2 luminance sampling factors and 2x1 or 1x2 chrominance sampling factors.
+This is a non-standard way of specifying 2x subsampling (normally 4:2:2 JPEGs
+have 2x1 luminance and 1x1 chrominance sampling factors, and 4:4:0 JPEGs have
+1x2 luminance and 1x1 chrominance sampling factors), but the JPEG specification
+and the libjpeg API both allow it.
+
+7. Fixed an unsigned integer overflow in the libjpeg memory manager, detected
+by the Clang undefined behavior sanitizer, that could be triggered by
+attempting to decompress a specially-crafted malformed JPEG image.  This issue
+affected only 32-bit code and did not pose a security threat, but removing the
+warning makes it easier to detect actual security issues, should they arise in
+the future.
+
+8. Fixed additional negative left shifts and other issues reported by the GCC
+and Clang undefined behavior sanitizers when attempting to decompress
+specially-crafted malformed JPEG images.  None of these issues posed a security
+threat, but removing the warnings makes it easier to detect actual security
+issues, should they arise in the future.
+
+9. Fixed an out-of-bounds array reference, introduced by 1.4.90[2] (partial
+image decompression) and detected by the Clang undefined behavior sanitizer,
+that could be triggered by a specially-crafted malformed JPEG image with more
+than four components.  Because the out-of-bounds reference was still within the
+same structure, it was not known to pose a security threat, but removing the
+warning makes it easier to detect actual security issues, should they arise in
+the future.
+
+10. Fixed another ABI conformance issue in the 64-bit ARM (AArch64) NEON SIMD
+code.  Some of the routines were incorrectly reading and storing data below the
+stack pointer, which caused segfaults in certain applications under specific
+circumstances.
+
+
 1.5.0
 =====
 

Makefile.am

@@ -11,20 +11,23 @@ endif
 nodist_include_HEADERS = jconfig.h
 
 pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = pkgscripts/libjpeg.pc pkgscripts/libturbojpeg.pc
+pkgconfig_DATA = pkgscripts/libjpeg.pc
+if WITH_TURBOJPEG
+pkgconfig_DATA += pkgscripts/libturbojpeg.pc
+endif
 
-HDRS = jchuff.h jcmaster.h jdct.h jdhuff.h jerror.h jinclude.h jmemsys.h \
+HDRS = jchuff.h jdct.h jdhuff.h jerror.h jinclude.h jmemsys.h jmorecfg.h \
-	jmorecfg.h jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h \
+	jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h \
 	jpeg_nbits_table.h
 
 libjpeg_la_SOURCES = $(HDRS) jcapimin.c jcapistd.c jccoefct.c jccolor.c \
-	jcdctmgr.c jcext.c jchuff.c jcinit.c jcmainct.c jcmarker.c \
+	jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
-	jcmaster.c jcomapi.c jcparam.c jcphuff.c jcprepct.c jcsample.c \
+	jcomapi.c jcparam.c jcphuff.c jcprepct.c jcsample.c jctrans.c \
-	jctrans.c jdapimin.c jdapistd.c jdatadst.c jdatasrc.c jdcoefct.c \
+	jdapimin.c jdapistd.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
-	jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c \
+	jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
-	jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c \
+	jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c jerror.c \
-	jerror.c jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c \
+	jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c \
-	jidctint.c jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c
+	jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c
 
 if WITH_ARITH
 libjpeg_la_SOURCES += jaricom.c
@@ -87,7 +90,7 @@ endif
 
 
 bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom
-noinst_PROGRAMS = jcstest jpegyuv yuvjpeg
+noinst_PROGRAMS = jcstest
 
 
 if WITH_TURBOJPEG
@@ -110,7 +113,7 @@ tjunittest_LDADD = libturbojpeg.la
 endif
 
 
-cjpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c cjpeg.c rdgif.c rdppm.c rdswitch.c rdjpeg.c
+cjpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c cjpeg.c rdgif.c rdppm.c rdswitch.c
 if WITH_12BIT
 else
 cjpeg_SOURCES += rdbmp.c rdtarga.c
@@ -124,12 +127,6 @@ else
 cjpeg_CFLAGS += -DBMP_SUPPORTED -DTARGA_SUPPORTED
 endif
 
-if HAVE_LIBPNG
-cjpeg_CFLAGS += -DPNG_SUPPORTED $(libpng_CFLAGS)
-cjpeg_LDADD += $(libpng_LIBS)
-cjpeg_SOURCES += rdpng.c
-endif
-
 djpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c djpeg.c rdcolmap.c rdswitch.c \
 	wrgif.c wrppm.c
 if WITH_12BIT
@@ -161,14 +158,6 @@ jcstest_SOURCES = jcstest.c
 
 jcstest_LDADD = libjpeg.la
 
-jpegyuv_SOURCES = jpegyuv.c
-
-jpegyuv_LDADD = libjpeg.la
-
-yuvjpeg_SOURCES = yuvjpeg.c
-
-yuvjpeg_LDADD = libjpeg.la
-
 dist_man1_MANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
 
 DOCS= coderules.txt jconfig.txt change.log rdrle.c wrrle.c BUILDING.md \
@@ -348,7 +337,7 @@ MD5_PPM_444_TILE = 7964e41e67cfb8d0a587c0aa4798f9c3
 # Test compressing from/decompressing to an arbitrary subregion of a larger
 # image buffer
 	cp $(srcdir)/testimages/testorig.ppm testout_tile.ppm
-	TJ_REVERT=1 ./tjbench testout_tile.ppm 95 -rgb -quiet -tile -benchtime 0.01 >/dev/null 2>&1
+	./tjbench testout_tile.ppm 95 -rgb -quiet -tile -benchtime 0.01 >/dev/null 2>&1
 	for i in 8 16 32 64 128; do \
 		md5/md5cmp $(MD5_PPM_GRAY_TILE) testout_tile_GRAY_Q95_$$i\x$$i.ppm; \
 	done
@@ -367,7 +356,7 @@ MD5_PPM_444_TILE = 7964e41e67cfb8d0a587c0aa4798f9c3
 	done
 	rm -f testout_tile_GRAY_* testout_tile_420_* testout_tile_422_* testout_tile_444_*
 
-	TJ_REVERT=1 ./tjbench testout_tile.ppm 95 -rgb -fastupsample -quiet -tile -benchtime 0.01 >/dev/null 2>&1
+	./tjbench testout_tile.ppm 95 -rgb -fastupsample -quiet -tile -benchtime 0.01 >/dev/null 2>&1
 	md5/md5cmp $(MD5_PPM_420M_8x8_TILE) testout_tile_420_Q95_8x8.ppm
 	for i in 16 32 64 128; do \
 		md5/md5cmp $(MD5_PPM_420M_TILE) testout_tile_420_Q95_$$i\x$$i.ppm; \
@@ -392,7 +381,7 @@ endif
 # ones.)
 
 # CC: null  SAMP: fullsize  FDCT: islow  ENT: huff
-	./cjpeg -revert -rgb -dct int -outfile testout_rgb_islow.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -rgb -dct int -outfile testout_rgb_islow.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_RGB_ISLOW) testout_rgb_islow.jpg
 # CC: null  SAMP: fullsize  IDCT: islow  ENT: huff
 	./djpeg -dct int -ppm -outfile testout_rgb_islow.ppm testout_rgb_islow.jpg
@@ -412,7 +401,7 @@ else
 endif
 
 # CC: RGB->YCC  SAMP: fullsize/h2v1  FDCT: ifast  ENT: 2-pass huff
-	./cjpeg -revert -sample 2x1 -dct fast -opt -outfile testout_422_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -sample 2x1 -dct fast -opt -outfile testout_422_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_422_IFAST_OPT) testout_422_ifast_opt.jpg
 # CC: YCC->RGB  SAMP: fullsize/h2v1 fancy  IDCT: ifast  ENT: huff
 	./djpeg -dct fast -outfile testout_422_ifast.ppm testout_422_ifast_opt.jpg
@@ -436,7 +425,7 @@ else
 endif
 
 # CC: RGB->YCC  SAMP: fullsize/h2v2  FDCT: ifast  ENT: prog huff
-	./cjpeg -revert -sample 2x2 -quality 100 -dct fast -prog -outfile testout_420_q100_ifast_prog.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -sample 2x2 -quality 100 -dct fast -prog -outfile testout_420_q100_ifast_prog.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_420_IFAST_Q100_PROG) testout_420_q100_ifast_prog.jpg
 # CC: YCC->RGB  SAMP: fullsize/h2v2 fancy  IDCT: ifast  ENT: prog huff
 	./djpeg -dct fast -outfile testout_420_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
@@ -448,7 +437,7 @@ endif
 	rm -f testout_420m_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
 
 # CC: RGB->Gray  SAMP: fullsize  FDCT: islow  ENT: huff
-	./cjpeg -revert -gray -dct int -outfile testout_gray_islow.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -gray -dct int -outfile testout_gray_islow.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_GRAY_ISLOW) testout_gray_islow.jpg
 # CC: Gray->Gray  SAMP: fullsize  IDCT: islow  ENT: huff
 	./djpeg -dct int -outfile testout_gray_islow.ppm testout_gray_islow.jpg
@@ -473,7 +462,7 @@ endif
 
 # CC: RGB->YCC  SAMP: fullsize smooth/h2v2 smooth  FDCT: islow
 # ENT: 2-pass huff
-	./cjpeg -revert -sample 2x2 -smooth 1 -dct int -opt -outfile testout_420s_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -sample 2x2 -smooth 1 -dct int -opt -outfile testout_420s_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_420S_IFAST_OPT) testout_420s_ifast_opt.jpg
 	rm -f testout_420s_ifast_opt.jpg
 
@@ -494,7 +483,7 @@ endif
 #                  when running on a 64-bit FPU
 
 # CC: RGB->YCC  SAMP: fullsize/int  FDCT: float  ENT: prog huff
-	./cjpeg -revert -sample 3x2 -dct float -prog -outfile testout_3x2_float_prog.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -sample 3x2 -dct float -prog -outfile testout_3x2_float_prog.jpg $(srcdir)/testimages/testorig.ppm
 	if [ "${FLOATTEST}" = "sse" ]; then \
 		md5/md5cmp $(MD5_JPEG_3x2_FLOAT_PROG_SSE) testout_3x2_float_prog.jpg; \
 	elif [ "${FLOATTEST}" = "32bit" -o "${FLOATTEST}" = "64bit" ]; then \
@@ -512,7 +501,7 @@ endif
 	rm -f testout_3x2_float.ppm testout_3x2_float_prog.jpg
 
 # CC: RGB->YCC  SAMP: fullsize/int  FDCT: ifast  ENT: prog huff
-	./cjpeg -revert -sample 3x2 -dct fast -prog -outfile testout_3x2_ifast_prog.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -sample 3x2 -dct fast -prog -outfile testout_3x2_ifast_prog.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_3x2_IFAST_PROG) testout_3x2_ifast_prog.jpg
 # CC: YCC->RGB  SAMP: fullsize/int  IDCT: ifast  ENT: prog huff
 	./djpeg -dct fast -outfile testout_3x2_ifast.ppm testout_3x2_ifast_prog.jpg
@@ -521,14 +510,14 @@ endif
 
 if WITH_ARITH_ENC
 # CC: YCC->RGB  SAMP: fullsize/h2v2  FDCT: islow  ENT: arith
-	./cjpeg -revert -dct int -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -dct int -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_420_ISLOW_ARI) testout_420_islow_ari.jpg
 	rm -f testout_420_islow_ari.jpg
-	./jpegtran -revert -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testimgint.jpg
+	./jpegtran -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testimgint.jpg
 	md5/md5cmp $(MD5_JPEG_420_ISLOW_ARI) testout_420_islow_ari.jpg
 	rm -f testout_420_islow_ari.jpg
 # CC: YCC->RGB  SAMP: fullsize  FDCT: islow  ENT: prog arith
-	./cjpeg -revert -sample 1x1 -dct int -prog -arithmetic -outfile testout_444_islow_progari.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -sample 1x1 -dct int -prog -arithmetic -outfile testout_444_islow_progari.jpg $(srcdir)/testimages/testorig.ppm
 	md5/md5cmp $(MD5_JPEG_444_ISLOW_PROGARI) testout_444_islow_progari.jpg
 	rm -f testout_444_islow_progari.jpg
 endif
@@ -537,7 +526,7 @@ if WITH_ARITH_DEC
 	./djpeg -fast -ppm -outfile testout_420m_ifast_ari.ppm $(srcdir)/testimages/testimgari.jpg
 	md5/md5cmp $(MD5_PPM_420M_IFAST_ARI) testout_420m_ifast_ari.ppm
 	rm -f testout_420m_ifast_ari.ppm
-	./jpegtran -revert -outfile testout_420_islow.jpg $(srcdir)/testimages/testimgari.jpg
+	./jpegtran -outfile testout_420_islow.jpg $(srcdir)/testimages/testimgari.jpg
 	md5/md5cmp $(MD5_JPEG_420_ISLOW) testout_420_islow.jpg
 	rm -f testout_420_islow.jpg
 endif
@@ -628,7 +617,7 @@ if WITH_ARITH_DEC
 	rm -f testout_420_islow_ari_skip16,139.ppm
 endif
 # Context rows: Yes  Intra-iMCU row: No   iMCU row prefetch: No   ENT: prog huff
-	./cjpeg -revert -dct int -prog -outfile testout_420_islow_prog.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -dct int -prog -outfile testout_420_islow_prog.jpg $(srcdir)/testimages/testorig.ppm
 	./djpeg -dct int -crop 62x62+71+71 -ppm -outfile testout_420_islow_prog_crop62x62,71,71.ppm testout_420_islow_prog.jpg
 	md5/md5cmp $(MD5_PPM_420_ISLOW_PROG_CROP62x62_71_71) testout_420_islow_prog_crop62x62,71,71.ppm
 	rm -f testout_420_islow_prog_crop62x62,71,71.ppm testout_420_islow_prog.jpg
@@ -639,18 +628,18 @@ if WITH_ARITH_DEC
 	rm -f testout_420_islow_ari_crop53x53,4,4.ppm
 endif
 # Context rows: No   Intra-iMCU row: Yes  ENT: huff
-	./cjpeg -revert -dct int -sample 1x1 -outfile testout_444_islow.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -dct int -sample 1x1 -outfile testout_444_islow.jpg $(srcdir)/testimages/testorig.ppm
 	./djpeg -dct int -skip 1,6 -ppm -outfile testout_444_islow_skip1,6.ppm testout_444_islow.jpg
 	md5/md5cmp $(MD5_PPM_444_ISLOW_SKIP1_6) testout_444_islow_skip1,6.ppm
 	rm -f testout_444_islow_skip1,6.ppm testout_444_islow.jpg
 # Context rows: No   Intra-iMCU row: No   ENT: prog huff
-	./cjpeg -revert -dct int -prog -sample 1x1 -outfile testout_444_islow_prog.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -dct int -prog -sample 1x1 -outfile testout_444_islow_prog.jpg $(srcdir)/testimages/testorig.ppm
 	./djpeg -dct int -crop 98x98+13+13 -ppm -outfile testout_444_islow_prog_crop98x98,13,13.ppm testout_444_islow_prog.jpg
 	md5/md5cmp $(MD5_PPM_444_ISLOW_PROG_CROP98x98_13_13) testout_444_islow_prog_crop98x98,13,13.ppm
 	rm -f testout_444_islow_prog_crop98x98,13,13.ppm testout_444_islow_prog.jpg
 # Context rows: No   Intra-iMCU row: No   ENT: arith
 if WITH_ARITH_ENC
-	./cjpeg -revert -dct int -arithmetic -sample 1x1 -outfile testout_444_islow_ari.jpg $(srcdir)/testimages/testorig.ppm
+	./cjpeg -dct int -arithmetic -sample 1x1 -outfile testout_444_islow_ari.jpg $(srcdir)/testimages/testorig.ppm
 if WITH_ARITH_DEC
 	./djpeg -dct int -crop 37x37+0+0 -ppm -outfile testout_444_islow_ari_crop37x37,0,0.ppm testout_444_islow_ari.jpg
 	md5/md5cmp $(MD5_PPM_444_ISLOW_ARI_CROP37x37_0_0) testout_444_islow_ari_crop37x37,0,0.ppm
@@ -659,7 +648,7 @@ endif
 	rm -f testout_444_islow_ari.jpg
 endif
 
-	./jpegtran -revert -crop 120x90+20+50 -transpose -perfect -outfile testout_crop.jpg $(srcdir)/testimages/$(TESTORIG)
+	./jpegtran -crop 120x90+20+50 -transpose -perfect -outfile testout_crop.jpg $(srcdir)/testimages/$(TESTORIG)
 	md5/md5cmp $(MD5_JPEG_CROP) testout_crop.jpg
 	rm -f testout_crop.jpg
 	echo GREAT SUCCESS!
@@ -710,26 +699,26 @@ if WITH_JAVA
 endif
 
 
-pkgscripts/mozjpeg.spec: pkgscripts/mozjpeg.spec.tmpl
+pkgscripts/libjpeg-turbo.spec: pkgscripts/libjpeg-turbo.spec.tmpl
-	cat pkgscripts/mozjpeg.spec.tmpl | sed s@%{__prefix}@$(prefix)@g | \
+	cat pkgscripts/libjpeg-turbo.spec.tmpl | sed s@%{__prefix}@$(prefix)@g | \
 		sed s@%{__bindir}@$(bindir)@g | sed s@%{__datadir}@$(datadir)@g | \
 		sed s@%{__docdir}@$(docdir)@g | sed s@%{__includedir}@$(includedir)@g | \
 		sed s@%{__libdir}@$(libdir)@g | sed s@%{__mandir}@$(mandir)@g \
-		> pkgscripts/mozjpeg.spec
+		> pkgscripts/libjpeg-turbo.spec
 
-rpm: all pkgscripts/mozjpeg.spec
+rpm: all pkgscripts/libjpeg-turbo.spec
 	TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
 	mkdir -p $$TMPDIR/RPMS; \
 	ln -fs `pwd` $$TMPDIR/BUILD; \
 	rm -f ${PKGNAME}-${VERSION}.${RPMARCH}.rpm; \
 	rpmbuild -bb --define "_blddir $$TMPDIR/buildroot"  \
 		--define "_topdir $$TMPDIR" \
-		--target ${RPMARCH} pkgscripts/mozjpeg.spec; \
+		--target ${RPMARCH} pkgscripts/libjpeg-turbo.spec; \
 	cp $$TMPDIR/RPMS/${RPMARCH}/${PKGNAME}-${VERSION}-${BUILD}.${RPMARCH}.rpm \
 		${PKGNAME}-${VERSION}.${RPMARCH}.rpm; \
 	rm -rf $$TMPDIR
 
-srpm: dist-gzip pkgscripts/mozjpeg.spec
+srpm: dist-gzip pkgscripts/libjpeg-turbo.spec
 	TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
 	mkdir -p $$TMPDIR/RPMS; \
 	mkdir -p $$TMPDIR/SRPMS; \
@@ -738,10 +727,10 @@ srpm: dist-gzip pkgscripts/mozjpeg.spec
 	mkdir -p $$TMPDIR/SPECS; \
 	rm -f ${PKGNAME}-${VERSION}.src.rpm; \
 	cp ${PACKAGE_NAME}-${VERSION}.tar.gz $$TMPDIR/SOURCES; \
-	cat pkgscripts/mozjpeg.spec | sed s/%{_blddir}/%{_tmppath}/g \
+	cat pkgscripts/libjpeg-turbo.spec | sed s/%{_blddir}/%{_tmppath}/g \
 		| sed s/#--\>//g \
-		> $$TMPDIR/SPECS/mozjpeg.spec; \
+		> $$TMPDIR/SPECS/libjpeg-turbo.spec; \
-	rpmbuild -bs --define "_topdir $$TMPDIR" $$TMPDIR/SPECS/mozjpeg.spec; \
+	rpmbuild -bs --define "_topdir $$TMPDIR" $$TMPDIR/SPECS/libjpeg-turbo.spec; \
 	cp $$TMPDIR/SRPMS/${PKGNAME}-${VERSION}-${BUILD}.src.rpm \
 		${PKGNAME}-${VERSION}.src.rpm; \
 	rm -rf $$TMPDIR
@@ -771,12 +760,12 @@ udmg: all pkgscripts/makemacpkg pkgscripts/uninstall
 	sh pkgscripts/makemacpkg -build32 ${BUILDDIR32}
 
 iosdmg: all pkgscripts/makemacpkg pkgscripts/uninstall
-	sh pkgscripts/makemacpkg -build32 ${BUILDDIR32} -buildarmv6 ${BUILDDIRARMV6} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
+	sh pkgscripts/makemacpkg -build32 ${BUILDDIR32} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
 
 else
 
 iosdmg: all pkgscripts/makemacpkg pkgscripts/uninstall
-	sh pkgscripts/makemacpkg -buildarmv6 ${BUILDDIRARMV6} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
+	sh pkgscripts/makemacpkg -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
 
 endif
 

README-mozilla.txt

@@ -1,194 +0,0 @@
-Mozilla JPEG Encoder Project
-============================
-
-mozjpeg is a fork of libjpeg-turbo that aims to speed up load times of web
-pages by reducing the size (and, by extension, the transmission time) of JPEG
-files.  It accomplishes this by enabling optimized Huffman trees and
-progressive entropy coding by default in the JPEG compressor, as well as
-splitting the spectrum of DCT coefficients into separate scans and using
-Trellis quantisation.
-
-Although it is based on libjpeg-turbo, mozjpeg is not intended to be a
-general-purpose or high-performance JPEG library.  Its performance is highly
-"asymmetric".  That is, the JPEG files it generates require much more time to
-compress than to decompress.  When the default settings are used, mozjpeg is
-considerably slower than libjpeg-turbo or even libjpeg at compressing images.
-Thus, it is not generally suitable for real-time compression.  It is best used
-as part of a web encoding workflow.
-
-
-libjpeg API Extensibility Framework
-===================================
-
-mozjpeg's implementation of the libjpeg API includes an extensibility framework
-that allows new features to be added without modifying the transparent libjpeg
-compress/decompress structures (which would break backward ABI compatibility.)
-Extension parameters are placed into the opaque jpeg_comp_master structure, and
-a set of accessor functions and globally unique tokens allows for 
-getting/setting those parameters without directly accessing the structure.
-
-Currently, only the accessor functions necessary to support the mozjpeg
-extensions are implemented, but the framework can be easily extended in the
-future to accommodate additional simple parameter types, complex or
-multi-valued parameters, or decompressor extensions.
-
-
-The currently-implemented accessor functions are as follows:
-
-boolean jpeg_c_bool_param_supported (j_compress_ptr cinfo,
-                                     J_BOOLEAN_PARAM param)
-        Returns TRUE if the given boolean extension parameter is supported by
-        this implementation of the libjpeg API, or FALSE otherwise.
-
-void jpeg_c_set_bool_param (j_compress_ptr cinfo,
-                            J_BOOLEAN_PARAM param, boolean value);
-        Set the given boolean extension parameter to the given value (TRUE or
-        FALSE.)
-
-boolean jpeg_c_get_bool_param (j_compress_ptr cinfo, J_BOOLEAN_PARAM param)
-        Get the value of the given boolean extension parameter (TRUE or FALSE.)
-
-boolean jpeg_c_float_param_supported (j_compress_ptr cinfo,
-                                      J_FLOAT_PARAM param)
-        Returns TRUE if the given floating point extension parameter is
-        supported by this implementation of the libjpeg API, or FALSE
-        otherwise.
-
-void jpeg_c_set_float_param (j_compress_ptr cinfo, J_FLOAT_PARAM param,
-                             float value)
-        Set the given floating point extension parameter to the given value.
-
-float jpeg_c_get_float_param (j_compress_ptr cinfo, J_FLOAT_PARAM param);
-        Get the value of the given floating point extension parameter.
-
-boolean jpeg_c_int_param_supported (j_compress_ptr cinfo,
-                                    J_INT_PARAM param)
-        Returns TRUE if the given integer extension parameter is supported by
-        this implementation of the libjpeg API, or FALSE otherwise.
-
-void jpeg_c_set_int_param (j_compress_ptr cinfo, J_INT_PARAM param,
-                          int value)
-        Set the given integer extension parameter to the given value.
-
-int jpeg_c_get_int_param (j_compress_ptr cinfo, J_INT_PARAM param)
-        Get the value of the given integer extension parameter.
-
-
-Boolean Extension Parameters Supported by mozjpeg
--------------------------------------------------
-
-* JBOOLEAN_OPTIMIZE_SCANS (default: TRUE)
-  Specifies whether scan parameters should be optimized.  Parameter
-  optimization is done as in jpgcrush. jpeg_simple_progression() should be called
-  after setting JBOOLEAN_OPTIMIZE_SCANS.
-  When disabling JBOOLEAN_OPTIMIZE_SCANS, cinfo.scan_info should additionally be
-  set to NULL to disable use of the progressive coding mode, if so desired.
-
-* JBOOLEAN_TRELLIS_QUANT (default: TRUE)
-  Specifies whether to apply trellis quantization.  For each 8x8 block, trellis
-  quantization determines the best tradeoff between rate and distortion.
-
-* JBOOLEAN_TRELLIS_QUANT_DC (default: TRUE)
-  Specifies whether to apply trellis quantization to DC coefficients.
-
-* JBOOLEAN_TRELLIS_EOB_OPT (default: FALSE)
-  Specifies whether to optimize runs of zero blocks in trellis quantization.
-  This is applicable only when JBOOLEAN_USE_SCANS_IN_TRELLIS is enabled.
-
-* JBOOLEAN_USE_LAMBDA_WEIGHT_TBL currently has no effect.
-
-* JBOOLEAN_USE_SCANS_IN_TRELLIS (default: FALSE)
-  Specifies whether multiple scans should be considered during trellis
-  quantization.
-
-* JBOOLEAN_TRELLIS_Q_OPT (default: FALSE)
-  Specifies whether to optimize the quantization table after trellis
-  quantization.  If enabled, then a revised quantization table is derived so
-  as to minimize the reconstruction error of the quantized coefficients.
-
-* JBOOLEAN_OVERSHOOT_DERINGING (default: TRUE)
-  Specifies whether overshooting is applied to samples with extreme values
-  (for example, 0 and 255 for 8-bit samples).  Overshooting may reduce ringing
-  artifacts from compression, in particular in areas where black text appears
-  on a white background.
-
-
-Floating Point Extension Parameters Supported by mozjpeg
---------------------------------------------------------
-
-* JFLOAT_LAMBDA_LOG_SCALE1 (default: 14.75)
-  JFLOAT_LAMBDA_LOG_SCALE2 (default: 16.5)
-  These parameters specify the lambda value used in trellis quantization.  The
-  lambda value (Lagrange multiplier) in the
-    R + lambda * D
-  equation is derived from
-    lambda = 2^s1 / ((2^s2 + n) * q^2),
-  where s1 and s2 are the values of JFLOAT_LAMBDA_LOG_SCALE1 and
-  JFLOAT_LAMBDA_LOG_SCALE2, n is the average of the squared unquantized AC
-  coefficients within the current 8x8 block, and q is the quantization table
-  entry associated with the current coefficient frequency.  If
-  JFLOAT_LAMBDA_LOG_SCALE2 is 0, then an alternate form is used that does not
-  rely on n:
-    lambda = 2^(s1-12) / q^2.
-
-* JFLOAT_TRELLIS_DELTA_DC_WEIGHT (default: 0.0)
-  This parameter controls how distortion is calculated in DC trellis quantization
-  (enabled with JBOOLEAN_TRELLIS_QUANT_DC). It defines weighting between distortion
-  of the DC coefficient and distortion of the vertical gradient of DC coefficients.
-  The value of the parameter corresponds to the weight applied to the distortion
-  of the vertical gradient.
-
-
-Integer Extension Parameters Supported by mozjpeg
--------------------------------------------------
-
-* JINT_COMPRESS_PROFILE (default: JCP_MAX_COMPRESSION)
-  Select a compression profile, which is a set of default parameters that will
-  achieve a desired compression goal.  This parameter controls the behavior of
-  the jpeg_set_defaults() function.  Thus, setting JINT_COMPRESS_PROFILE does
-  not cause any other parameters to be modified until jpeg_set_defaults() is
-  called.  The following compression profiles are supported:
-
-  - JCP_MAX_COMPRESSION (default)
-    Increase the compression ratio as much as possible, at the expense of
-    increased encoding time.  This enables progressive entropy coding and all
-    mozjpeg extensions.
-
-  - JCP_FASTEST
-    Use the libjpeg[-turbo] defaults (baseline entropy coding, no mozjpeg
-    extensions enabled.)
-
-* JINT_TRELLIS_FREQ_SPLIT (default: 8)
-  Specifies the position within the zigzag scan at which the split between
-  scans is positioned in the context of trellis quantization.
-  JBOOLEAN_USE_SCANS_IN_TRELLIS must be enabled for this parameter to have any
-  effect.
-
-* JINT_TRELLIS_NUM_LOOPS (default: 1)
-  Specifies the number of trellis quantization passes.  Huffman tables are
-  updated between passes.
-
-* JINT_BASE_QUANT_TBL_IDX (default: 3)
-  Specifies which quantization table set to use.  The following options are
-  available:
-  0 = Tables from JPEG Annex K
-  1 = Flat table
-  2 = Table tuned for MSSIM on Kodak image set
-  3 = Table from http://www.imagemagick.org/discourse-server/viewtopic.php?f=22&t=20333&p=98008#p98008
-  4 = Table tuned for PSNR-HVS-M on Kodak image set
-  5 = Table from:  Relevance of Human Vision to JPEG-DCT Compression
-      (1992) Klein, Silverstein and Carney
-  6 = Table from:  DCTune Perceptual Optimization of Compressed Dental X-Rays
-      (1997) Watson, Taylor, Borthwick
-  7 = Table from:  A Visual Detection Model for DCT Coefficient Quantization
-      (12/9/93) Ahumada, Watson, Peterson
-  8 = Table from:  An Improved Detection Model for DCT Coefficient Quantization
-      (1993) Peterson, Ahumada and Watson
-
-* JINT_DC_SCAN_OPT_MODE (default: 1)
-  Specifies the DC scan optimization mode.  The following options are
-  available:
-  0 = One scan for all components
-  1 = One scan per component
-  2 = Optimize between one scan for all components and one scan for the first
-      component plus one scan for the remaining components

README-turbo.txt

@@ -1,342 +0,0 @@
-Background
-==========
-
-libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
-NEON, AltiVec) to accelerate baseline JPEG compression and decompression on
-x86, x86-64, ARM, and PowerPC systems.  On such systems, libjpeg-turbo is
-generally 2-6x as fast as libjpeg, all else being equal.  On other types of
-systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by
-virtue of its highly-optimized Huffman coding routines.  In many cases, the
-performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs.
-
-libjpeg-turbo implements both the traditional libjpeg API as well as the less
-powerful but more straightforward TurboJPEG API.  libjpeg-turbo also features
-colorspace extensions that allow it to compress from/decompress to 32-bit and
-big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java
-interface.
-
-libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated
-derivative of libjpeg v6b developed by Miyasaka Masaru.  The TigerVNC and
-VirtualGL projects made numerous enhancements to the codec in 2009, and in
-early 2010, libjpeg-turbo spun off into an independent project, with the goal
-of making high-speed JPEG compression/decompression technology available to a
-broader range of users and developers.
-
-
-License
-=======
-
-libjpeg-turbo is covered by three compatible BSD-style open source licenses.
-Refer to [LICENSE.md](LICENSE.md) for a roll-up of license terms.
-
-
-Building libjpeg-turbo
-======================
-
-Refer to [BUILDING.md](BUILDING.md) for complete instructions.
-
-
-Using libjpeg-turbo
-===================
-
-libjpeg-turbo includes two APIs that can be used to compress and decompress
-JPEG images:
-
-- **TurboJPEG API**
-  This API provides an easy-to-use interface for compressing and decompressing
-  JPEG images in memory.  It also provides some functionality that would not be
-  straightforward to achieve using the underlying libjpeg API, such as
-  generating planar YUV images and performing multiple simultaneous lossless
-  transforms on an image.  The Java interface for libjpeg-turbo is written on
-  top of the TurboJPEG API.
-
-- **libjpeg API**
-  This is the de facto industry-standard API for compressing and decompressing
-  JPEG images.  It is more difficult to use than the TurboJPEG API but also
-  more powerful.  The libjpeg API implementation in libjpeg-turbo is both
-  API/ABI-compatible and mathematically compatible with libjpeg v6b.  It can
-  also optionally be configured to be API/ABI-compatible with libjpeg v7 and v8
-  (see below.)
-
-There is no significant performance advantage to either API when both are used
-to perform similar operations.
-
-Colorspace Extensions
----------------------
-
-libjpeg-turbo includes extensions that allow JPEG images to be compressed
-directly from (and decompressed directly to) buffers that use BGR, BGRX,
-RGBX, XBGR, and XRGB pixel ordering.  This is implemented with ten new
-colorspace constants:
-
-    JCS_EXT_RGB   /* red/green/blue */
-    JCS_EXT_RGBX  /* red/green/blue/x */
-    JCS_EXT_BGR   /* blue/green/red */
-    JCS_EXT_BGRX  /* blue/green/red/x */
-    JCS_EXT_XBGR  /* x/blue/green/red */
-    JCS_EXT_XRGB  /* x/red/green/blue */
-    JCS_EXT_RGBA  /* red/green/blue/alpha */
-    JCS_EXT_BGRA  /* blue/green/red/alpha */
-    JCS_EXT_ABGR  /* alpha/blue/green/red */
-    JCS_EXT_ARGB  /* alpha/red/green/blue */
-
-Setting `cinfo.in_color_space` (compression) or `cinfo.out_color_space`
-(decompression) to one of these values will cause libjpeg-turbo to read the
-red, green, and blue values from (or write them to) the appropriate position in
-the pixel when compressing from/decompressing to an RGB buffer.
-
-Your application can check for the existence of these extensions at compile
-time with:
-
-    #ifdef JCS_EXTENSIONS
-
-At run time, attempting to use these extensions with a libjpeg implementation
-that does not support them will result in a "Bogus input colorspace" error.
-Applications can trap this error in order to test whether run-time support is
-available for the colorspace extensions.
-
-When using the RGBX, BGRX, XBGR, and XRGB colorspaces during decompression, the
-X byte is undefined, and in order to ensure the best performance, libjpeg-turbo
-can set that byte to whatever value it wishes.  If an application expects the X
-byte to be used as an alpha channel, then it should specify `JCS_EXT_RGBA`,
-`JCS_EXT_BGRA`, `JCS_EXT_ABGR`, or `JCS_EXT_ARGB`.  When these colorspace
-constants are used, the X byte is guaranteed to be 0xFF, which is interpreted
-as opaque.
-
-Your application can check for the existence of the alpha channel colorspace
-extensions at compile time with:
-
-    #ifdef JCS_ALPHA_EXTENSIONS
-
-[jcstest.c](jcstest.c), located in the libjpeg-turbo source tree, demonstrates
-how to check for the existence of the colorspace extensions at compile time and
-run time.
-
-libjpeg v7 and v8 API/ABI Emulation
------------------------------------
-
-With libjpeg v7 and v8, new features were added that necessitated extending the
-compression and decompression structures.  Unfortunately, due to the exposed
-nature of those structures, extending them also necessitated breaking backward
-ABI compatibility with previous libjpeg releases.  Thus, programs that were
-built to use libjpeg v7 or v8 did not work with libjpeg-turbo, since it is
-based on the libjpeg v6b code base.  Although libjpeg v7 and v8 are not
-as widely used as v6b, enough programs (including a few Linux distros) made
-the switch that there was a demand to emulate the libjpeg v7 and v8 ABIs
-in libjpeg-turbo.  It should be noted, however, that this feature was added
-primarily so that applications that had already been compiled to use libjpeg
-v7+ could take advantage of accelerated baseline JPEG encoding/decoding
-without recompiling.  libjpeg-turbo does not claim to support all of the
-libjpeg v7+ features, nor to produce identical output to libjpeg v7+ in all
-cases (see below.)
-
-By passing an argument of `--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.
-
-### Support for libjpeg v7 and v8 Features
-
-#### Fully supported
-
-- **libjpeg: IDCT scaling extensions in decompressor**
-  libjpeg-turbo supports IDCT scaling with scaling factors of 1/8, 1/4, 3/8,
-  1/2, 5/8, 3/4, 7/8, 9/8, 5/4, 11/8, 3/2, 13/8, 7/4, 15/8, and 2/1 (only 1/4
-  and 1/2 are SIMD-accelerated.)
-
-- **libjpeg: Arithmetic coding**
-
-- **libjpeg: In-memory source and destination managers**
-  See notes below.
-
-- **cjpeg: Separate quality settings for luminance and chrominance**
-  Note that the libpjeg v7+ API was extended to accommodate this feature only
-  for convenience purposes.  It has always been possible to implement this
-  feature with libjpeg v6b (see rdswitch.c for an example.)
-
-- **cjpeg: 32-bit BMP support**
-
-- **cjpeg: `-rgb` option**
-
-- **jpegtran: Lossless cropping**
-
-- **jpegtran: `-perfect` option**
-
-- **jpegtran: Forcing width/height when performing lossless crop**
-
-- **rdjpgcom: `-raw` option**
-
-- **rdjpgcom: Locale awareness**
-
-
-#### Not supported
-
-NOTE:  As of this writing, extensive research has been conducted into the
-usefulness of DCT scaling as a means of data reduction and SmartScale as a
-means of quality improvement.  The reader is invited to peruse the research at
-<http://www.libjpeg-turbo.org/About/SmartScale> and draw his/her own conclusions,
-but it is the general belief of our project that these features have not
-demonstrated sufficient usefulness to justify inclusion in libjpeg-turbo.
-
-- **libjpeg: DCT scaling in compressor**
-  `cinfo.scale_num` and `cinfo.scale_denom` are silently ignored.
-  There is no technical reason why DCT scaling could not be supported when
-  emulating the libjpeg v7+ API/ABI, but without the SmartScale extension (see
-  below), only scaling factors of 1/2, 8/15, 4/7, 8/13, 2/3, 8/11, 4/5, and
-  8/9 would be available, which is of limited usefulness.
-
-- **libjpeg: SmartScale**
-  `cinfo.block_size` is silently ignored.
-  SmartScale is an extension to the JPEG format that allows for DCT block
-  sizes other than 8x8.  Providing support for this new format would be
-  feasible (particularly without full acceleration.)  However, until/unless
-  the format becomes either an official industry standard or, at minimum, an
-  accepted solution in the community, we are hesitant to implement it, as
-  there is no sense of whether or how it might change in the future.  It is
-  our belief that SmartScale has not demonstrated sufficient usefulness as a
-  lossless format nor as a means of quality enhancement, and thus our primary
-  interest in providing this feature would be as a means of supporting
-  additional DCT scaling factors.
-
-- **libjpeg: Fancy downsampling in compressor**
-  `cinfo.do_fancy_downsampling` is silently ignored.
-  This requires the DCT scaling feature, which is not supported.
-
-- **jpegtran: Scaling**
-  This requires both the DCT scaling and SmartScale features, which are not
-  supported.
-
-- **Lossless RGB JPEG files**
-  This requires the SmartScale feature, which is not supported.
-
-### What About libjpeg v9?
-
-libjpeg v9 introduced yet another field to the JPEG compression structure
-(`color_transform`), thus making the ABI backward incompatible with that of
-libjpeg v8.  This new field was introduced solely for the purpose of supporting
-lossless SmartScale encoding.  Furthermore, there was actually no reason to
-extend the API in this manner, as the color transform could have just as easily
-been activated by way of a new JPEG colorspace constant, thus preserving
-backward ABI compatibility.
-
-Our research (see link above) has shown that lossless SmartScale does not
-generally accomplish anything that can't already be accomplished better with
-existing, standard lossless formats.  Therefore, at this time it is our belief
-that there is not sufficient technical justification for software projects to
-upgrade from libjpeg v8 to libjpeg v9, and thus there is not sufficient
-echnical justification for us to emulate the libjpeg v9 ABI.
-
-In-Memory Source/Destination Managers
--------------------------------------
-
-By default, libjpeg-turbo 1.3 and later includes the `jpeg_mem_src()` and
-`jpeg_mem_dest()` functions, even when not emulating the libjpeg v8 API/ABI.
-Previously, it was necessary to build libjpeg-turbo from source with libjpeg v8
-API/ABI emulation in order to use the in-memory source/destination managers,
-but several projects requested that those functions be included when emulating
-the libjpeg v6b API/ABI as well.  This allows the use of those functions by
-programs that need them, without breaking ABI compatibility for programs that
-don't, and it allows those functions to be provided in the "official"
-libjpeg-turbo binaries.
-
-Those who are concerned about maintaining strict conformance with the libjpeg
-v6b or v7 API can pass an argument of `--without-mem-srcdst` to `configure` or
-an argument of `-DWITH_MEM_SRCDST=0` to `cmake` prior to building
-libjpeg-turbo.  This will restore the pre-1.3 behavior, in which
-`jpeg_mem_src()` and `jpeg_mem_dest()` are only included when emulating the
-libjpeg v8 API/ABI.
-
-On Un*x systems, including the in-memory source/destination managers changes
-the dynamic library version from 62.0.0 to 62.1.0 if using libjpeg v6b API/ABI
-emulation and from 7.0.0 to 7.1.0 if using libjpeg v7 API/ABI emulation.
-
-Note that, on most Un*x systems, the dynamic linker will not look for a
-function in a library until that function is actually used.  Thus, if a program
-is built against libjpeg-turbo 1.3+ and uses `jpeg_mem_src()` or
-`jpeg_mem_dest()`, that program will not fail if run against an older version
-of libjpeg-turbo or against libjpeg v7- until the program actually tries to
-call `jpeg_mem_src()` or `jpeg_mem_dest()`.  Such is not the case on Windows.
-If a program is built against the libjpeg-turbo 1.3+ DLL and uses
-`jpeg_mem_src()` or `jpeg_mem_dest()`, then it must use the libjpeg-turbo 1.3+
-DLL at run time.
-
-Both cjpeg and djpeg have been extended to allow testing the in-memory
-source/destination manager functions.  See their respective man pages for more
-details.
-
-
-Mathematical Compatibility
-==========================
-
-For the most part, libjpeg-turbo should produce identical output to libjpeg
-v6b.  The one exception to this is when using the floating point DCT/IDCT, in
-which case the outputs of libjpeg v6b and libjpeg-turbo can differ for the
-following reasons:
-
-- The SSE/SSE2 floating point DCT implementation in libjpeg-turbo is ever so
-  slightly more accurate than the implementation in libjpeg v6b, but not by
-  any amount perceptible to human vision (generally in the range of 0.01 to
-  0.08 dB gain in PNSR.)
-
-- When not using the SIMD extensions, libjpeg-turbo uses the more accurate
-  (and slightly faster) floating point IDCT algorithm introduced in libjpeg
-  v8a as opposed to the algorithm used in libjpeg v6b.  It should be noted,
-  however, that this algorithm basically brings the accuracy of the floating
-  point IDCT in line with the accuracy of the slow integer IDCT.  The floating
-  point DCT/IDCT algorithms are mainly a legacy feature, and they do not
-  produce significantly more accuracy than the slow integer algorithms (to put
-  numbers on this, the typical difference in PNSR between the two algorithms
-  is less than 0.10 dB, whereas changing the quality level by 1 in the upper
-  range of the quality scale is typically more like a 1.0 dB difference.)
-
-- If the floating point algorithms in libjpeg-turbo are not implemented using
-  SIMD instructions on a particular platform, then the accuracy of the
-  floating point DCT/IDCT can depend on the compiler settings.
-
-While libjpeg-turbo does emulate the libjpeg v8 API/ABI, under the hood it is
-still using the same algorithms as libjpeg v6b, so there are several specific
-cases in which libjpeg-turbo cannot be expected to produce the same output as
-libjpeg v8:
-
-- When decompressing using scaling factors of 1/2 and 1/4, because libjpeg v8
-  implements those scaling algorithms differently than libjpeg v6b does, and
-  libjpeg-turbo's SIMD extensions are based on the libjpeg v6b behavior.
-
-- When using chrominance subsampling, because libjpeg v8 implements this
-  with its DCT/IDCT scaling algorithms rather than with a separate
-  downsampling/upsampling algorithm.  In our testing, the subsampled/upsampled
-  output of libjpeg v8 is less accurate than that of libjpeg v6b for this
-  reason.
-
-- When decompressing using a scaling factor > 1 and merged (AKA "non-fancy" or
-  "non-smooth") chrominance upsampling, because libjpeg v8 does not support
-  merged upsampling with scaling factors > 1.
-
-
-Performance Pitfalls
-====================
-
-Restart Markers
----------------
-
-The optimized Huffman decoder in libjpeg-turbo does not handle restart markers
-in a way that makes the rest of the libjpeg infrastructure happy, so it is
-necessary to use the slow Huffman decoder when decompressing a JPEG image that
-has restart markers.  This can cause the decompression performance to drop by
-as much as 20%, but the performance will still be much greater than that of
-libjpeg.  Many consumer packages, such as PhotoShop, use restart markers when
-generating JPEG images, so images generated by those programs will experience
-this issue.
-
-Fast Integer Forward DCT at High Quality Levels
------------------------------------------------
-
-The algorithm used by the SIMD-accelerated quantization function cannot produce
-correct results whenever the fast integer forward DCT is used along with a JPEG
-quality of 98-100.  Thus, libjpeg-turbo must use the non-SIMD quantization
-function in those cases.  This causes performance to drop by as much as 40%.
-It is therefore strongly advised that you use the slow integer forward DCT
-whenever encoding images with a JPEG quality of 98 or higher.
-

README.md

@@ -1,23 +1,341 @@
-Mozilla JPEG Encoder Project
+Background
-============================
+==========
 
-MozJPEG reduces file sizes of JPEG images while retaining quality and compatibility with the vast majority of the world's deployed decoders.
+libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
+NEON, AltiVec) to accelerate baseline JPEG compression and decompression on
+x86, x86-64, ARM, and PowerPC 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.
 
-MozJPEG is based on [libjpeg-turbo](https://github.com/libjpeg-turbo/libjpeg-turbo). It's compatible with libjpeg API and ABI, and can be used as a drop-in replacement for libjpeg. MozJPEG makes tradeoffs that are intended to benefit Web use cases and focuses solely on improving encoding, so it's best used as part of a Web encoding workflow.
+libjpeg-turbo implements both the traditional libjpeg API as well as the less
+powerful but more straightforward TurboJPEG API.  libjpeg-turbo also features
+colorspace extensions that allow it to compress from/decompress to 32-bit and
+big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java
+interface.
 
-MozJPEG is meant to be used as a library in graphics programs and image processing tools. We include a demo `cjpeg` tool, but it's not intended for serious use. We encourage authors of graphics programs to use MozJPEG's [C API](libjpeg.txt) instead.
+libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated
+derivative of libjpeg v6b developed by Miyasaka Masaru.  The TigerVNC and
+VirtualGL projects made numerous enhancements to the codec in 2009, and in
+early 2010, libjpeg-turbo spun off into an independent project, with the goal
+of making high-speed JPEG compression/decompression technology available to a
+broader range of users and developers.
 
-## Features
 
-* Progressive encoding with "jpegrescan" optimization. It can be applied to any JPEG file (with `jpegtran`) to losslessly reduce file size.
+License
-* Trellis quantization. When converting other formats to JPEG it maximizes quality/filesize ratio.
+=======
-* Comes with new quantization table presets, e.g. tuned for high-resolution displays.
-* Fully compatible with all web browsers.
-* Can be seamlessly integrated into any program using libjpeg.
 
-## Releases
+libjpeg-turbo is covered by three compatible BSD-style open source licenses.
+Refer to [LICENSE.md](LICENSE.md) for a roll-up of license terms.
 
-* [Latest release](https://github.com/mozilla/mozjpeg/releases/latest)
+
-* [Version 3.0 Announcement](https://boomswaggerboom.wordpress.com/2014/12/30/mozjpeg-3-0-released/) ([overview of 3.0 features](https://calendar.perfplanet.com/2014/mozjpeg-3-0/))
+Building libjpeg-turbo
-* [Version 2.0 Announcement](https://blog.mozilla.org/research/2014/07/15/mozilla-advances-jpeg-encoding-with-mozjpeg-2-0/)
+======================
-* [Version 1.0 Announcement](https://blog.mozilla.org/research/2014/03/05/introducing-the-mozjpeg-project/)
+
+Refer to [BUILDING.md](BUILDING.md) for complete instructions.
+
+
+Using libjpeg-turbo
+===================
+
+libjpeg-turbo includes two APIs that can be used to compress and decompress
+JPEG images:
+
+- **TurboJPEG API**  
+  This API provides an easy-to-use interface for compressing and decompressing
+  JPEG images in memory.  It also provides some functionality that would not be
+  straightforward to achieve using the underlying libjpeg API, such as
+  generating planar YUV images and performing multiple simultaneous lossless
+  transforms on an image.  The Java interface for libjpeg-turbo is written on
+  top of the TurboJPEG API.
+
+- **libjpeg API**  
+  This is the de facto industry-standard API for compressing and decompressing
+  JPEG images.  It is more difficult to use than the TurboJPEG API but also
+  more powerful.  The libjpeg API implementation in libjpeg-turbo is both
+  API/ABI-compatible and mathematically compatible with libjpeg v6b.  It can
+  also optionally be configured to be API/ABI-compatible with libjpeg v7 and v8
+  (see below.)
+
+There is no significant performance advantage to either API when both are used
+to perform similar operations.
+
+Colorspace Extensions
+---------------------
+
+libjpeg-turbo includes extensions that allow JPEG images to be compressed
+directly from (and decompressed directly to) buffers that use BGR, BGRX,
+RGBX, XBGR, and XRGB pixel ordering.  This is implemented with ten new
+colorspace constants:
+
+    JCS_EXT_RGB   /* red/green/blue */
+    JCS_EXT_RGBX  /* red/green/blue/x */
+    JCS_EXT_BGR   /* blue/green/red */
+    JCS_EXT_BGRX  /* blue/green/red/x */
+    JCS_EXT_XBGR  /* x/blue/green/red */
+    JCS_EXT_XRGB  /* x/red/green/blue */
+    JCS_EXT_RGBA  /* red/green/blue/alpha */
+    JCS_EXT_BGRA  /* blue/green/red/alpha */
+    JCS_EXT_ABGR  /* alpha/blue/green/red */
+    JCS_EXT_ARGB  /* alpha/red/green/blue */
+
+Setting `cinfo.in_color_space` (compression) or `cinfo.out_color_space`
+(decompression) to one of these values will cause libjpeg-turbo to read the
+red, green, and blue values from (or write them to) the appropriate position in
+the pixel when compressing from/decompressing to an RGB buffer.
+
+Your application can check for the existence of these extensions at compile
+time with:
+
+    #ifdef JCS_EXTENSIONS
+
+At run time, attempting to use these extensions with a libjpeg implementation
+that does not support them will result in a "Bogus input colorspace" error.
+Applications can trap this error in order to test whether run-time support is
+available for the colorspace extensions.
+
+When using the RGBX, BGRX, XBGR, and XRGB colorspaces during decompression, the
+X byte is undefined, and in order to ensure the best performance, libjpeg-turbo
+can set that byte to whatever value it wishes.  If an application expects the X
+byte to be used as an alpha channel, then it should specify `JCS_EXT_RGBA`,
+`JCS_EXT_BGRA`, `JCS_EXT_ABGR`, or `JCS_EXT_ARGB`.  When these colorspace
+constants are used, the X byte is guaranteed to be 0xFF, which is interpreted
+as opaque.
+
+Your application can check for the existence of the alpha channel colorspace
+extensions at compile time with:
+
+    #ifdef JCS_ALPHA_EXTENSIONS
+
+[jcstest.c](jcstest.c), located in the libjpeg-turbo source tree, demonstrates
+how to check for the existence of the colorspace extensions at compile time and
+run time.
+
+libjpeg v7 and v8 API/ABI Emulation
+-----------------------------------
+
+With libjpeg v7 and v8, new features were added that necessitated extending the
+compression and decompression structures.  Unfortunately, due to the exposed
+nature of those structures, extending them also necessitated breaking backward
+ABI compatibility with previous libjpeg releases.  Thus, programs that were
+built to use libjpeg v7 or v8 did not work with libjpeg-turbo, since it is
+based on the libjpeg v6b code base.  Although libjpeg v7 and v8 are not
+as widely used as v6b, enough programs (including a few Linux distros) made
+the switch that there was a demand to emulate the libjpeg v7 and v8 ABIs
+in libjpeg-turbo.  It should be noted, however, that this feature was added
+primarily so that applications that had already been compiled to use libjpeg
+v7+ could take advantage of accelerated baseline JPEG encoding/decoding
+without recompiling.  libjpeg-turbo does not claim to support all of the
+libjpeg v7+ features, nor to produce identical output to libjpeg v7+ in all
+cases (see below.)
+
+By passing an argument of `--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.
+
+### Support for libjpeg v7 and v8 Features
+
+#### Fully supported
+
+- **libjpeg: IDCT scaling extensions in decompressor**  
+  libjpeg-turbo supports IDCT scaling with scaling factors of 1/8, 1/4, 3/8,
+  1/2, 5/8, 3/4, 7/8, 9/8, 5/4, 11/8, 3/2, 13/8, 7/4, 15/8, and 2/1 (only 1/4
+  and 1/2 are SIMD-accelerated.)
+
+- **libjpeg: Arithmetic coding**
+
+- **libjpeg: In-memory source and destination managers**  
+  See notes below.
+
+- **cjpeg: Separate quality settings for luminance and chrominance**  
+  Note that the libpjeg v7+ API was extended to accommodate this feature only
+  for convenience purposes.  It has always been possible to implement this
+  feature with libjpeg v6b (see rdswitch.c for an example.)
+
+- **cjpeg: 32-bit BMP support**
+
+- **cjpeg: `-rgb` option**
+
+- **jpegtran: Lossless cropping**
+
+- **jpegtran: `-perfect` option**
+
+- **jpegtran: Forcing width/height when performing lossless crop**
+
+- **rdjpgcom: `-raw` option**
+
+- **rdjpgcom: Locale awareness**
+
+
+#### Not supported
+
+NOTE:  As of this writing, extensive research has been conducted into the
+usefulness of DCT scaling as a means of data reduction and SmartScale as a
+means of quality improvement.  The reader is invited to peruse the research at
+<http://www.libjpeg-turbo.org/About/SmartScale> and draw his/her own conclusions,
+but it is the general belief of our project that these features have not
+demonstrated sufficient usefulness to justify inclusion in libjpeg-turbo.
+
+- **libjpeg: DCT scaling in compressor**  
+  `cinfo.scale_num` and `cinfo.scale_denom` are silently ignored.
+  There is no technical reason why DCT scaling could not be supported when
+  emulating the libjpeg v7+ API/ABI, but without the SmartScale extension (see
+  below), only scaling factors of 1/2, 8/15, 4/7, 8/13, 2/3, 8/11, 4/5, and
+  8/9 would be available, which is of limited usefulness.
+
+- **libjpeg: SmartScale**  
+  `cinfo.block_size` is silently ignored.
+  SmartScale is an extension to the JPEG format that allows for DCT block
+  sizes other than 8x8.  Providing support for this new format would be
+  feasible (particularly without full acceleration.)  However, until/unless
+  the format becomes either an official industry standard or, at minimum, an
+  accepted solution in the community, we are hesitant to implement it, as
+  there is no sense of whether or how it might change in the future.  It is
+  our belief that SmartScale has not demonstrated sufficient usefulness as a
+  lossless format nor as a means of quality enhancement, and thus our primary
+  interest in providing this feature would be as a means of supporting
+  additional DCT scaling factors.
+
+- **libjpeg: Fancy downsampling in compressor**  
+  `cinfo.do_fancy_downsampling` is silently ignored.
+  This requires the DCT scaling feature, which is not supported.
+
+- **jpegtran: Scaling**  
+  This requires both the DCT scaling and SmartScale features, which are not
+  supported.
+
+- **Lossless RGB JPEG files**  
+  This requires the SmartScale feature, which is not supported.
+
+### What About libjpeg v9?
+
+libjpeg v9 introduced yet another field to the JPEG compression structure
+(`color_transform`), thus making the ABI backward incompatible with that of
+libjpeg v8.  This new field was introduced solely for the purpose of supporting
+lossless SmartScale encoding.  Furthermore, there was actually no reason to
+extend the API in this manner, as the color transform could have just as easily
+been activated by way of a new JPEG colorspace constant, thus preserving
+backward ABI compatibility.
+
+Our research (see link above) has shown that lossless SmartScale does not
+generally accomplish anything that can't already be accomplished better with
+existing, standard lossless formats.  Therefore, at this time it is our belief
+that there is not sufficient technical justification for software projects to
+upgrade from libjpeg v8 to libjpeg v9, and thus there is not sufficient
+echnical justification for us to emulate the libjpeg v9 ABI.
+
+In-Memory Source/Destination Managers
+-------------------------------------
+
+By default, libjpeg-turbo 1.3 and later includes the `jpeg_mem_src()` and
+`jpeg_mem_dest()` functions, even when not emulating the libjpeg v8 API/ABI.
+Previously, it was necessary to build libjpeg-turbo from source with libjpeg v8
+API/ABI emulation in order to use the in-memory source/destination managers,
+but several projects requested that those functions be included when emulating
+the libjpeg v6b API/ABI as well.  This allows the use of those functions by
+programs that need them, without breaking ABI compatibility for programs that
+don't, and it allows those functions to be provided in the "official"
+libjpeg-turbo binaries.
+
+Those who are concerned about maintaining strict conformance with the libjpeg
+v6b or v7 API can pass an argument of `--without-mem-srcdst` to `configure` or
+an argument of `-DWITH_MEM_SRCDST=0` to `cmake` prior to building
+libjpeg-turbo.  This will restore the pre-1.3 behavior, in which
+`jpeg_mem_src()` and `jpeg_mem_dest()` are only included when emulating the
+libjpeg v8 API/ABI.
+
+On Un*x systems, including the in-memory source/destination managers changes
+the dynamic library version from 62.0.0 to 62.1.0 if using libjpeg v6b API/ABI
+emulation and from 7.0.0 to 7.1.0 if using libjpeg v7 API/ABI emulation.
+
+Note that, on most Un*x systems, the dynamic linker will not look for a
+function in a library until that function is actually used.  Thus, if a program
+is built against libjpeg-turbo 1.3+ and uses `jpeg_mem_src()` or
+`jpeg_mem_dest()`, that program will not fail if run against an older version
+of libjpeg-turbo or against libjpeg v7- until the program actually tries to
+call `jpeg_mem_src()` or `jpeg_mem_dest()`.  Such is not the case on Windows.
+If a program is built against the libjpeg-turbo 1.3+ DLL and uses
+`jpeg_mem_src()` or `jpeg_mem_dest()`, then it must use the libjpeg-turbo 1.3+
+DLL at run time.
+
+Both cjpeg and djpeg have been extended to allow testing the in-memory
+source/destination manager functions.  See their respective man pages for more
+details.
+
+
+Mathematical Compatibility
+==========================
+
+For the most part, libjpeg-turbo should produce identical output to libjpeg
+v6b.  The one exception to this is when using the floating point DCT/IDCT, in
+which case the outputs of libjpeg v6b and libjpeg-turbo can differ for the
+following reasons:
+
+- The SSE/SSE2 floating point DCT implementation in libjpeg-turbo is ever so
+  slightly more accurate than the implementation in libjpeg v6b, but not by
+  any amount perceptible to human vision (generally in the range of 0.01 to
+  0.08 dB gain in PNSR.)
+
+- When not using the SIMD extensions, libjpeg-turbo uses the more accurate
+  (and slightly faster) floating point IDCT algorithm introduced in libjpeg
+  v8a as opposed to the algorithm used in libjpeg v6b.  It should be noted,
+  however, that this algorithm basically brings the accuracy of the floating
+  point IDCT in line with the accuracy of the slow integer IDCT.  The floating
+  point DCT/IDCT algorithms are mainly a legacy feature, and they do not
+  produce significantly more accuracy than the slow integer algorithms (to put
+  numbers on this, the typical difference in PNSR between the two algorithms
+  is less than 0.10 dB, whereas changing the quality level by 1 in the upper
+  range of the quality scale is typically more like a 1.0 dB difference.)
+
+- If the floating point algorithms in libjpeg-turbo are not implemented using
+  SIMD instructions on a particular platform, then the accuracy of the
+  floating point DCT/IDCT can depend on the compiler settings.
+
+While libjpeg-turbo does emulate the libjpeg v8 API/ABI, under the hood it is
+still using the same algorithms as libjpeg v6b, so there are several specific
+cases in which libjpeg-turbo cannot be expected to produce the same output as
+libjpeg v8:
+
+- When decompressing using scaling factors of 1/2 and 1/4, because libjpeg v8
+  implements those scaling algorithms differently than libjpeg v6b does, and
+  libjpeg-turbo's SIMD extensions are based on the libjpeg v6b behavior.
+
+- When using chrominance subsampling, because libjpeg v8 implements this
+  with its DCT/IDCT scaling algorithms rather than with a separate
+  downsampling/upsampling algorithm.  In our testing, the subsampled/upsampled
+  output of libjpeg v8 is less accurate than that of libjpeg v6b for this
+  reason.
+
+- When decompressing using a scaling factor > 1 and merged (AKA "non-fancy" or
+  "non-smooth") chrominance upsampling, because libjpeg v8 does not support
+  merged upsampling with scaling factors > 1.
+
+
+Performance Pitfalls
+====================
+
+Restart Markers
+---------------
+
+The optimized Huffman decoder in libjpeg-turbo does not handle restart markers
+in a way that makes the rest of the libjpeg infrastructure happy, so it is
+necessary to use the slow Huffman decoder when decompressing a JPEG image that
+has restart markers.  This can cause the decompression performance to drop by
+as much as 20%, but the performance will still be much greater than that of
+libjpeg.  Many consumer packages, such as PhotoShop, use restart markers when
+generating JPEG images, so images generated by those programs will experience
+this issue.
+
+Fast Integer Forward DCT at High Quality Levels
+-----------------------------------------------
+
+The algorithm used by the SIMD-accelerated quantization function cannot produce
+correct results whenever the fast integer forward DCT is used along with a JPEG
+quality of 98-100.  Thus, libjpeg-turbo must use the non-SIMD quantization
+function in those cases.  This causes performance to drop by as much as 40%.
+It is therefore strongly advised that you use the slow integer forward DCT
+whenever encoding images with a JPEG quality of 98 or higher.

bmp.c

@@ -108,10 +108,14 @@ static void pixelconvert(unsigned char *srcbuf, int srcpf, int srcbottomup,
 					m=(m-k)/(1.0-k);
 					y=(y-k)/(1.0-k);
 				}
-				if(c>1.0) c=1.0;  if(c<0.) c=0.;
+				if(c>1.0) c=1.0;
-				if(m>1.0) m=1.0;  if(m<0.) m=0.;
+				if(c<0.) c=0.;
-				if(y>1.0) y=1.0;  if(y<0.) y=0.;
+				if(m>1.0) m=1.0;
-				if(k>1.0) k=1.0;  if(k<0.) k=0.;
+				if(m<0.) m=0.;
+				if(y>1.0) y=1.0;
+				if(y<0.) y=0.;
+				if(k>1.0) k=1.0;
+				if(k<0.) k=0.;
 				*dstcolptr++=(unsigned char)(255.0-c*255.0+0.5);
 				*dstcolptr++=(unsigned char)(255.0-m*255.0+0.5);
 				*dstcolptr++=(unsigned char)(255.0-y*255.0+0.5);
@@ -133,9 +137,12 @@ static void pixelconvert(unsigned char *srcbuf, int srcpf, int srcbottomup,
 				double r=c*k/255.;
 				double g=m*k/255.;
 				double b=y*k/255.;
-				if(r>255.0) r=255.0;  if(r<0.) r=0.;
+				if(r>255.0) r=255.0;
-				if(g>255.0) g=255.0;  if(g<0.) g=0.;
+				if(r<0.) r=0.;
-				if(b>255.0) b=255.0;  if(b<0.) b=0.;
+				if(g>255.0) g=255.0;
+				if(g<0.) g=0.;
+				if(b>255.0) b=255.0;
+				if(b<0.) b=0.;
 				dstcolptr[tjRedOffset[dstpf]]=(unsigned char)(r+0.5);
 				dstcolptr[tjGreenOffset[dstpf]]=(unsigned char)(g+0.5);
 				dstcolptr[tjBlueOffset[dstpf]]=(unsigned char)(b+0.5);

cderror.h

@@ -124,10 +124,6 @@ JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format")
 #endif
 JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format")
 
-#ifdef PNG_SUPPORTED
-JMESSAGE(JERR_PNG_ERROR, "Unable to read PNG file: %s")
-#endif
-
 #ifdef JMAKE_ENUM_LIST
 
   JMSG_LASTADDONCODE

cdjpeg.h

@@ -5,9 +5,8 @@
  * Copyright (C) 1994-1997, Thomas G. Lane.
  * It was modified by The libjpeg-turbo Project to include only code relevant
  * to libjpeg-turbo.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * 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.
@@ -20,7 +19,6 @@
 #include "jerror.h"             /* get library error codes too */
 #include "cderror.h"            /* get application-specific error codes */
 
-#define JPEG_RAW_READER 0
 
 /*
  * Object interface for cjpeg's source file decoding modules
@@ -37,13 +35,6 @@ struct cjpeg_source_struct {
 
   JSAMPARRAY buffer;
   JDIMENSION buffer_height;
-  
-#if JPEG_RAW_READER
-  // For reading JPEG
-  JSAMPARRAY plane_pointer[4];
-#endif
-  
-  jpeg_saved_marker_ptr marker_list;
 };
 
 
@@ -102,9 +93,7 @@ EXTERN(djpeg_dest_ptr) jinit_write_bmp (j_decompress_ptr cinfo,
                                         boolean is_os2);
 EXTERN(cjpeg_source_ptr) jinit_read_gif (j_compress_ptr cinfo);
 EXTERN(djpeg_dest_ptr) jinit_write_gif (j_decompress_ptr cinfo);
-EXTERN(cjpeg_source_ptr) jinit_read_jpeg (j_compress_ptr cinfo);
 EXTERN(cjpeg_source_ptr) jinit_read_ppm (j_compress_ptr cinfo);
-EXTERN(cjpeg_source_ptr) jinit_read_png (j_compress_ptr cinfo);
 EXTERN(djpeg_dest_ptr) jinit_write_ppm (j_decompress_ptr cinfo);
 EXTERN(cjpeg_source_ptr) jinit_read_rle (j_compress_ptr cinfo);
 EXTERN(djpeg_dest_ptr) jinit_write_rle (j_decompress_ptr cinfo);

cjpeg.c

@@ -6,9 +6,8 @@
  * Modified 2003-2011 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
  * Copyright (C) 2010, 2013-2014, D. R. Commander.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README 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.
@@ -80,7 +79,7 @@ static const char * const cdjpeg_message_table[] = {
  */
 
 static boolean is_targa;        /* records user -targa switch */
-static boolean is_jpeg;
+
 
 LOCAL(cjpeg_source_ptr)
 select_file_type (j_compress_ptr cinfo, FILE *infile)
@@ -113,10 +112,6 @@ select_file_type (j_compress_ptr cinfo, FILE *infile)
   case 'P':
     return jinit_read_ppm(cinfo);
 #endif
-#ifdef PNG_SUPPORTED
-  case 0x89:
-    return jinit_read_png(cinfo);
-#endif
 #ifdef RLE_SUPPORTED
   case 'R':
     return jinit_read_rle(cinfo);
@@ -125,9 +120,6 @@ select_file_type (j_compress_ptr cinfo, FILE *infile)
   case 0x00:
     return jinit_read_targa(cinfo);
 #endif
-  case 0xff:
-    is_jpeg = TRUE;
-    return jinit_read_jpeg(cinfo);
   default:
     ERREXIT(cinfo, JERR_UNKNOWN_FORMAT);
     break;
@@ -168,31 +160,15 @@ 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
   fprintf(stderr, "  -targa         Input file is Targa format (usually not needed)\n");
 #endif
-  fprintf(stderr, "  -revert        Revert to standard defaults (instead of mozjpeg defaults)\n");
-  fprintf(stderr, "  -fastcrush     Disable progressive scan optimization\n");
-  fprintf(stderr, "  -dc-scan-opt   DC scan optimization mode\n");
-  fprintf(stderr, "                 - 0 One scan for all components\n");
-  fprintf(stderr, "                 - 1 One scan per component (default)\n");
-  fprintf(stderr, "                 - 2 Optimize between one scan for all components and one scan for 1st component\n");
-  fprintf(stderr, "                     plus one scan for remaining components\n");
-  fprintf(stderr, "  -notrellis     Disable trellis optimization\n");
-  fprintf(stderr, "  -trellis-dc    Enable trellis optimization of DC coefficients (default)\n");
-  fprintf(stderr, "  -notrellis-dc  Disable trellis optimization of DC coefficients\n");
-  fprintf(stderr, "  -tune-psnr     Tune trellis optimization for PSNR\n");
-  fprintf(stderr, "  -tune-hvs-psnr Tune trellis optimization for PSNR-HVS (default)\n");
-  fprintf(stderr, "  -tune-ssim     Tune trellis optimization for SSIM\n");
-  fprintf(stderr, "  -tune-ms-ssim  Tune trellis optimization for MS-SSIM\n");
   fprintf(stderr, "Switches for advanced users:\n");
-  fprintf(stderr, "  -noovershoot   Disable black-on-white deringing via overshoot\n");
 #ifdef C_ARITH_CODING_SUPPORTED
   fprintf(stderr, "  -arithmetic    Use arithmetic coding\n");
 #endif
@@ -208,14 +184,6 @@ usage (void)
   fprintf(stderr, "  -dct float     Use floating-point DCT method%s\n",
           (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
 #endif
-  fprintf(stderr, "  -quant-baseline Use 8-bit quantization table entries for baseline JPEG compatibility\n");
-  fprintf(stderr, "  -quant-table N Use predefined quantization table N:\n");
-  fprintf(stderr, "                 - 0 JPEG Annex K\n");
-  fprintf(stderr, "                 - 1 Flat\n");
-  fprintf(stderr, "                 - 2 Custom, tuned for MS-SSIM\n");
-  fprintf(stderr, "                 - 3 ImageMagick table by N. Robidoux\n");
-  fprintf(stderr, "                 - 4 Custom, tuned for PSNR-HVS\n");
-  fprintf(stderr, "                 - 5 Table from paper by Klein, Silverstein and Carney\n");
   fprintf(stderr, "  -restart N     Set restart interval in rows, or in blocks with B\n");
 #ifdef INPUT_SMOOTHING_SUPPORTED
   fprintf(stderr, "  -smooth N      Smooth dithered input (N=1..100 is strength)\n");
@@ -228,6 +196,7 @@ usage (void)
   fprintf(stderr, "  -verbose  or  -debug   Emit debug output\n");
   fprintf(stderr, "  -version       Print version information and exit\n");
   fprintf(stderr, "Switches for wizards:\n");
+  fprintf(stderr, "  -baseline      Force baseline quantization tables\n");
   fprintf(stderr, "  -qtables file  Use quantization tables given in file\n");
   fprintf(stderr, "  -qslots N[,...]    Set component quantization tables\n");
   fprintf(stderr, "  -sample HxV[,...]  Set component sampling factors\n");
@@ -263,11 +232,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
   /* Set up default JPEG parameters. */
 
   force_baseline = FALSE;       /* by default, allow 16-bit quantizers */
-#ifdef C_PROGRESSIVE_SUPPORTED
-  simple_progressive = cinfo->num_scans == 0 ? FALSE : TRUE;
-#else
   simple_progressive = FALSE;
-#endif
   is_targa = FALSE;
   outfilename = NULL;
   memdst = FALSE;
@@ -291,9 +256,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Use arithmetic coding. */
 #ifdef C_ARITH_CODING_SUPPORTED
       cinfo->arith_code = TRUE;
-      
-      /* No table optimization required for AC */
-      cinfo->optimize_coding = FALSE;
 #else
       fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
               progname);
@@ -303,27 +265,19 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
     } else if (keymatch(arg, "baseline", 1)) {
       /* Force baseline-compatible output (8-bit quantizer values). */
       force_baseline = TRUE;
-      /* Disable multiple scans */
-      simple_progressive = FALSE;
-      cinfo->num_scans = 0;
-      cinfo->scan_info = NULL;
 
     } else if (keymatch(arg, "dct", 2)) {
       /* Select DCT algorithm. */
-      if (++argn >= argc) {      /* advance to next argument */
+      if (++argn >= argc)       /* advance to next argument */
-        fprintf(stderr, "%s: missing argument for dct\n", progname);
         usage();
-      }
       if (keymatch(argv[argn], "int", 1)) {
         cinfo->dct_method = JDCT_ISLOW;
       } else if (keymatch(argv[argn], "fast", 2)) {
         cinfo->dct_method = JDCT_IFAST;
       } else if (keymatch(argv[argn], "float", 2)) {
         cinfo->dct_method = JDCT_FLOAT;
-      } else {
+      } else
-        fprintf(stderr, "%s: invalid argument for dct\n", progname);
         usage();
-      }
 
     } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
       /* Enable debug printouts. */
@@ -345,9 +299,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
               PACKAGE_NAME, VERSION, BUILD);
       exit(EXIT_SUCCESS);
 
-    } else if (keymatch(arg, "fastcrush", 4)) {
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_OPTIMIZE_SCANS, FALSE);
-
     } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
       /* Force a monochrome JPEG file to be generated. */
       jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
@@ -356,18 +307,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Force an RGB JPEG file to be generated. */
       jpeg_set_colorspace(cinfo, JCS_RGB);
 
-    } else if (keymatch(arg, "lambda1", 7)) {
-      if (++argn >= argc)       /* advance to next argument */
-        usage();
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE1,
-                             atof(argv[argn]));
-
-    } else if (keymatch(arg, "lambda2", 7)) {
-      if (++argn >= argc)       /* advance to next argument */
-        usage();
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE2,
-                             atof(argv[argn]));
-
     } else if (keymatch(arg, "maxmemory", 3)) {
       /* Maximum memory in Kb (or Mb with 'm'). */
       long lval;
@@ -381,13 +320,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
         lval *= 1000L;
       cinfo->mem->max_memory_to_use = lval * 1000L;
 
-    } else if (keymatch(arg, "dc-scan-opt", 3)) {
-      if (++argn >= argc) {      /* advance to next argument */
-        fprintf(stderr, "%s: missing argument for dc-scan-opt\n", progname);
-        usage();
-      }
-      jpeg_c_set_int_param(cinfo, JINT_DC_SCAN_OPT_MODE, atoi(argv[argn]));
-
     } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
       /* Enable entropy parm optimization. */
 #ifdef ENTROPY_OPT_SUPPORTED
@@ -400,10 +332,8 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
 
     } else if (keymatch(arg, "outfile", 4)) {
       /* Set output file name. */
-      if (++argn >= argc) {      /* advance to next argument */
+      if (++argn >= argc)       /* advance to next argument */
-        fprintf(stderr, "%s: missing argument for outfile\n", progname);
         usage();
-      }
       outfilename = argv[argn]; /* save it away for later use */
 
     } else if (keymatch(arg, "progressive", 1)) {
@@ -429,10 +359,8 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
 
     } else if (keymatch(arg, "quality", 1)) {
       /* Quality ratings (quantization table scaling factors). */
-      if (++argn >= argc) {      /* advance to next argument */
+      if (++argn >= argc)       /* advance to next argument */
-        fprintf(stderr, "%s: missing argument for quality\n", progname);
         usage();
-      }
       qualityarg = argv[argn];
 
     } else if (keymatch(arg, "qslots", 2)) {
@@ -452,22 +380,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       qtablefile = argv[argn];
       /* We postpone actually reading the file in case -quality comes later. */
 
-    } else if (keymatch(arg, "quant-table", 7)) {
-      int val;
-      if (++argn >= argc)       /* advance to next argument */
-        usage();
-      val = atoi(argv[argn]);
-      jpeg_c_set_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX, val);
-      if (jpeg_c_get_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX) != val) {
-        fprintf(stderr, "%s: %d is invalid argument for quant-table\n", progname, val);
-        usage();
-      }
-      jpeg_set_quality(cinfo, 75, TRUE);
-
-    } else if (keymatch(arg, "quant-baseline", 7)) {
-      /* Force quantization table to meet baseline requirements */
-      force_baseline = TRUE;
-    
     } else if (keymatch(arg, "restart", 1)) {
       /* Restart interval in MCU rows (or in MCUs with 'b'). */
       long lval;
@@ -487,11 +399,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
         /* restart_interval will be computed during startup */
       }
 
-    } else if (keymatch(arg, "revert", 3)) {
-      /* revert to old JPEG default */
-      jpeg_c_set_int_param(cinfo, JINT_COMPRESS_PROFILE, JCP_FASTEST);
-      jpeg_set_defaults(cinfo);
-
     } else if (keymatch(arg, "sample", 2)) {
       /* Set sampling factors. */
       if (++argn >= argc)       /* advance to next argument */
@@ -531,57 +438,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Input file is Targa format. */
       is_targa = TRUE;
 
-    } else if (keymatch(arg, "notrellis-dc", 11)) {
-      /* disable trellis quantization */
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_TRELLIS_QUANT_DC, FALSE);
-      
-    } else if (keymatch(arg, "notrellis", 1)) {
-      /* disable trellis quantization */
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_TRELLIS_QUANT, FALSE);
-      
-    } else if (keymatch(arg, "trellis-dc-ver-weight", 12)) {
-      if (++argn >= argc) {      /* advance to next argument */
-        fprintf(stderr, "%s: missing argument for trellis-dc-ver-weight\n", progname);
-        usage();
-      }
-      jpeg_c_set_float_param(cinfo, JFLOAT_TRELLIS_DELTA_DC_WEIGHT, atof(argv[argn]));
-      
-    } else if (keymatch(arg, "trellis-dc", 9)) {
-      /* enable DC trellis quantization */
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_TRELLIS_QUANT_DC, TRUE);
-      
-    } else if (keymatch(arg, "tune-psnr", 6)) {
-      jpeg_c_set_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX, 1);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE1, 9.0);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE2, 0.0);
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_USE_LAMBDA_WEIGHT_TBL, FALSE);
-      jpeg_set_quality(cinfo, 75, TRUE);
-      
-    } else if (keymatch(arg, "tune-ssim", 6)) {
-      jpeg_c_set_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX, 1);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE1, 11.5);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE2, 12.75);
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_USE_LAMBDA_WEIGHT_TBL, FALSE);
-      jpeg_set_quality(cinfo, 75, TRUE);
-      
-    } else if (keymatch(arg, "tune-ms-ssim", 6)) {
-      jpeg_c_set_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX, 3);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE1, 12.0);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE2, 13.0);
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_USE_LAMBDA_WEIGHT_TBL, TRUE);
-      jpeg_set_quality(cinfo, 75, TRUE);
-      
-    } else if (keymatch(arg, "tune-hvs-psnr", 6)) {
-      jpeg_c_set_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX, 3);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE1, 14.75);
-      jpeg_c_set_float_param(cinfo, JFLOAT_LAMBDA_LOG_SCALE2, 16.5);
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_USE_LAMBDA_WEIGHT_TBL, TRUE);
-      jpeg_set_quality(cinfo, 75, TRUE);
-
-    } else if (keymatch(arg, "noovershoot", 11)) {
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_OVERSHOOT_DERINGING, FALSE);
     } else {
-      fprintf(stderr, "%s: unknown option '%s'\n", progname, arg);
       usage();                  /* bogus switch */
     }
   }
@@ -593,28 +450,20 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
     /* Set quantization tables for selected quality. */
     /* Some or all may be overridden if -qtables is present. */
     if (qualityarg != NULL)     /* process -quality if it was present */
-      if (! set_quality_ratings(cinfo, qualityarg, force_baseline)) {
+      if (! set_quality_ratings(cinfo, qualityarg, force_baseline))
-        fprintf(stderr, "%s: can't set quality ratings\n", progname);
         usage();
-      }
 
     if (qtablefile != NULL)     /* process -qtables if it was present */
-      if (! read_quant_tables(cinfo, qtablefile, force_baseline)) {
+      if (! read_quant_tables(cinfo, qtablefile, force_baseline))
-        fprintf(stderr, "%s: can't read qtable file\n", progname);
         usage();
-      }
 
     if (qslotsarg != NULL)      /* process -qslots if it was present */
       if (! set_quant_slots(cinfo, qslotsarg))
         usage();
 
-    /* set_quality_ratings sets default subsampling, so the explicit
-       subsampling must be set after it */
     if (samplearg != NULL)      /* process -sample if it was present */
-      if (! set_sample_factors(cinfo, samplearg)) {
+      if (! set_sample_factors(cinfo, samplearg))
-        fprintf(stderr, "%s: can't set sample factors\n", progname);
         usage();
-      }
 
 #ifdef C_PROGRESSIVE_SUPPORTED
     if (simple_progressive)     /* process -progressive; -scans can override */
@@ -746,9 +595,6 @@ main (int argc, char **argv)
   (*src_mgr->start_input) (&cinfo, src_mgr);
 
   /* Now that we know input colorspace, fix colorspace-dependent defaults */
-#if JPEG_RAW_READER
-  if (!is_jpeg)
-#endif
   jpeg_default_colorspace(&cinfo);
 
   /* Adjust default compression parameters by re-parsing the options */
@@ -765,47 +611,9 @@ main (int argc, char **argv)
   /* Start compressor */
   jpeg_start_compress(&cinfo, TRUE);
 
-  /* Copy metadata */
-  if (is_jpeg) {
-    jpeg_saved_marker_ptr marker;
-    
-    /* In the current implementation, we don't actually need to examine the
-     * option flag here; we just copy everything that got saved.
-     * But to avoid confusion, we do not output JFIF and Adobe APP14 markers
-     * if the encoder library already wrote one.
-     */
-    for (marker = src_mgr->marker_list; marker != NULL; marker = marker->next) {
-      if (cinfo.write_JFIF_header &&
-          marker->marker == JPEG_APP0 &&
-          marker->data_length >= 5 &&
-          GETJOCTET(marker->data[0]) == 0x4A &&
-          GETJOCTET(marker->data[1]) == 0x46 &&
-          GETJOCTET(marker->data[2]) == 0x49 &&
-          GETJOCTET(marker->data[3]) == 0x46 &&
-          GETJOCTET(marker->data[4]) == 0)
-        continue;                       /* reject duplicate JFIF */
-      if (cinfo.write_Adobe_marker &&
-          marker->marker == JPEG_APP0+14 &&
-          marker->data_length >= 5 &&
-          GETJOCTET(marker->data[0]) == 0x41 &&
-          GETJOCTET(marker->data[1]) == 0x64 &&
-          GETJOCTET(marker->data[2]) == 0x6F &&
-          GETJOCTET(marker->data[3]) == 0x62 &&
-          GETJOCTET(marker->data[4]) == 0x65)
-        continue;                       /* reject duplicate Adobe */
-      jpeg_write_marker(&cinfo, marker->marker, marker->data,
-                        marker->data_length);
-    }
-  }
-  
   /* Process data */
   while (cinfo.next_scanline < cinfo.image_height) {
     num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr);
-#if JPEG_RAW_READER
-    if (is_jpeg)
-      (void) jpeg_write_raw_data(&cinfo, src_mgr->plane_pointer, num_scanlines);
-    else
-#endif
     (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines);
   }
 

configure.ac

@@ -2,11 +2,10 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.56])
-AC_INIT([mozjpeg], [3.2])
+AC_INIT([libjpeg-turbo], [1.5.1])
-BUILD=`date +%Y%m%d`
 
 AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
-AC_PREFIX_DEFAULT(/opt/mozjpeg)
+AC_PREFIX_DEFAULT(/opt/libjpeg-turbo)
 
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
@@ -19,7 +18,6 @@ m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 AM_PROG_AS
 AM_PROG_CC_C_O
 AC_PROG_INSTALL
-m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 AC_PROG_LIBTOOL
 AC_PROG_LN_S
 
@@ -62,7 +60,7 @@ AC_CHECK_SIZEOF(size_t)
 if test "x${libdir}" = 'x${exec_prefix}/lib' -o "x${libdir}" = 'x${prefix}/lib'; then
   LIBDIR=`eval echo ${libdir}`
   LIBDIR=`eval echo $LIBDIR`
-  if test "$LIBDIR" = "/opt/mozjpeg/lib"; then
+  if test "$LIBDIR" = "/opt/libjpeg-turbo/lib"; then
     case $host_os in
       darwin*)
         ;;
@@ -104,12 +102,6 @@ if test "x${SUNCC}" = "xyes"; then
 fi
 
 # Checks for libraries.
-AC_CHECK_LIB([m],[pow])
-
-PKG_CHECK_MODULES([libpng], [libpng], [HAVE_LIBPNG=1], [
-  PKG_CHECK_MODULES([libpng], [libpng12], [HAVE_LIBPNG=1], [HAVE_LIBPNG=0])
-])
-AM_CONDITIONAL([HAVE_LIBPNG], [test "$HAVE_LIBPNG" -eq 1])
 
 # Checks for header files.
 AC_HEADER_STDC
@@ -162,10 +154,10 @@ AC_ARG_VAR(JPEG_LIB_VERSION, [libjpeg API version (62, 70, or 80)])
 if test "x$JPEG_LIB_VERSION" = "x"; then
   AC_ARG_WITH([jpeg7],
     AC_HELP_STRING([--with-jpeg7],
-      [Emulate libjpeg v7 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b.)]))
+      [Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
   AC_ARG_WITH([jpeg8],
     AC_HELP_STRING([--with-jpeg8],
-      [Emulate libjpeg v8 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b.)]))
+      [Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
   if test "x${with_jpeg8}" = "xyes"; then
     JPEG_LIB_VERSION=80
   else
@@ -183,9 +175,9 @@ AC_DEFINE_UNQUOTED(JPEG_LIB_VERSION, [$JPEG_LIB_VERSION],
   [libjpeg API version])
 
 AC_ARG_VAR(SO_MAJOR_VERSION,
-  [Major version of the mozjpeg shared library (default is determined by the API version)])
+  [Major version of the libjpeg-turbo shared library (default is determined by the API version)])
 AC_ARG_VAR(SO_MINOR_VERSION,
-  [Minor version of the mozjpeg shared library (default is determined by the API version)])
+  [Minor version of the libjpeg-turbo shared library (default is determined by the API version)])
 if test "x$SO_MAJOR_VERSION" = "x"; then
   case "$JPEG_LIB_VERSION" in
     62)  SO_MAJOR_VERSION=$JPEG_LIB_VERSION ;;
@@ -230,7 +222,7 @@ AC_SUBST(SO_MINOR_VERSION)
 AC_SUBST(SO_AGE)
 AC_SUBST(MEM_SRCDST_FUNCTIONS)
 
-AC_DEFINE_UNQUOTED(MOZJPEG_VERSION, [$VERSION], [mozjpeg version])
+AC_DEFINE_UNQUOTED(LIBJPEG_TURBO_VERSION, [$VERSION], [libjpeg-turbo version])
 
 m4_define(version_triplet,m4_split(AC_PACKAGE_VERSION,[[.]]))
 m4_define(version_major,m4_argn(1,version_triplet))
@@ -245,7 +237,7 @@ AC_DEFINE_UNQUOTED(LIBJPEG_TURBO_VERSION_NUMBER, [$LIBJPEG_TURBO_VERSION_NUMBER]
 VERSION_SCRIPT=yes
 AC_ARG_ENABLE([ld-version-script],
   AS_HELP_STRING([--disable-ld-version-script],
-    [Disable linker version script for mozjpeg (default is to use linker version script if the linker supports it)]),
+    [Disable linker version script for libjpeg-turbo (default is to use linker version script if the linker supports it)]),
   [VERSION_SCRIPT=$enableval], [])
 
 AC_MSG_CHECKING([whether the linker supports version scripts])
@@ -256,13 +248,13 @@ VERS_1 {
   global: *;
 };
 EOF
-AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM([], [])])],
+AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
   [VERSION_SCRIPT_FLAG=-Wl,--version-script,;
    AC_MSG_RESULT([yes (GNU style)])],
   [])
 if test "x$VERSION_SCRIPT_FLAG" = "x"; then
   LDFLAGS="$SAVED_LDFLAGS -Wl,-M,conftest.map"
-  AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM([], [])])],
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
     [VERSION_SCRIPT_FLAG=-Wl,-M,;
      AC_MSG_RESULT([yes (Sun style)])],
     [])
@@ -273,7 +265,7 @@ if test "x$VERSION_SCRIPT_FLAG" = "x"; then
 fi
 LDFLAGS="$SAVED_LDFLAGS"
 
-AC_MSG_CHECKING([whether to use version script when building mozjpeg])
+AC_MSG_CHECKING([whether to use version script when building libjpeg-turbo])
 AC_MSG_RESULT($VERSION_SCRIPT)
 
 AM_CONDITIONAL(VERSION_SCRIPT, test "x$VERSION_SCRIPT" = "xyes")
@@ -558,7 +550,7 @@ AM_CONDITIONAL([X86_64], [test "x$host_cpu" = "xx86_64" -o "x$host_cpu" = "xamd6
 AM_CONDITIONAL([WITH_TURBOJPEG], [test "x$with_turbojpeg" != "xno"])
 AM_CONDITIONAL([CROSS_COMPILING], [test "x$cross_compiling" = "xyes"])
 
-AC_ARG_VAR(PKGNAME, [distribution package name (default: mozjpeg)])
+AC_ARG_VAR(PKGNAME, [distribution package name (default: libjpeg-turbo)])
 if test "x$PKGNAME" = "x"; then
   PKGNAME=$PACKAGE_NAME
 fi
@@ -598,7 +590,7 @@ AC_DEFINE_UNQUOTED([BUILD], "$BUILD", [libjpeg-turbo build number])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_HEADERS([jconfig.h])
 AC_CONFIG_HEADERS([jconfigint.h])
-AC_CONFIG_FILES([pkgscripts/mozjpeg.spec.tmpl:release/mozjpeg.spec.in])
+AC_CONFIG_FILES([pkgscripts/libjpeg-turbo.spec.tmpl:release/libjpeg-turbo.spec.in])
 AC_CONFIG_FILES([pkgscripts/makecygwinpkg.tmpl:release/makecygwinpkg.in])
 AC_CONFIG_FILES([pkgscripts/makedpkg.tmpl:release/makedpkg.in])
 AC_CONFIG_FILES([pkgscripts/makemacpkg.tmpl:release/makemacpkg.in])

git-init-svn.sh

@@ -1,26 +0,0 @@
-#!/bin/sh
-set -e
-
-# Make a local, clean libjpeg-turbo branch that tracks the remote libjpeg-turbo.
-# This will allow pushing of imported libjpeg-turbo commits to the mozjpeg repository.
-# The libjpeg-turbo branch must only contain imported SVN commits (with git-svn-id: in the message).
-git branch -f -t libjpeg-turbo origin/libjpeg-turbo
-
-# Configure git-svn. "git svn fetch" will rebuild remaining git-svn metadata.
-git config svn-remote.svn.url svn://svn.code.sf.net/p/libjpeg-turbo/code
-git config svn-remote.svn.fetch trunk:refs/heads/libjpeg-turbo
-
-# Enable mapping of SVN usernames to git authors.
-git config svn.authorsfile .gitauthors
-
-# Mark which libjpeg-turbo commit has been used to start mozjpeg.
-# Required for accurate merging and blame.
-echo > .git/info/grafts "72b66f9c77b3e4ae363b21e48145f635cec0b193 540789427ccae8e9e778151cbc16ab8ee88ac6a8"
-
-# To get changes from SVN:
-# git svn fetch
-# git push origin libjpeg-turbo
-#
-# To merge SVN changes with mozjpeg:
-# git checkout master
-# git merge libjpeg-turbo

java/CMakeLists.txt

@@ -1,5 +1,5 @@
 set(JAR_FILE turbojpeg.jar)
-set(MANIFEST_FILE "${CMAKE_CURRENT_SOURCE_DIR}/MANIFEST.MF")
+set(MANIFEST_FILE ${CMAKE_CURRENT_SOURCE_DIR}/MANIFEST.MF)
 
 set(JAVA_CLASSNAMES org/libjpegturbo/turbojpeg/TJ
   org/libjpegturbo/turbojpeg/TJCompressor
@@ -17,7 +17,7 @@ set(JAVA_CLASSNAMES org/libjpegturbo/turbojpeg/TJ
 if(MSVC_IDE)
   set(OBJDIR "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}")
 else()
-  set(OBJDIR "${CMAKE_CURRENT_BINARY_DIR}")
+  set(OBJDIR ${CMAKE_CURRENT_BINARY_DIR})
 endif()
 
 set(TURBOJPEG_DLL_NAME "turbojpeg")
@@ -25,34 +25,33 @@ if(MINGW)
   set(TURBOJPEG_DLL_NAME "libturbojpeg")
 endif()
 configure_file(org/libjpegturbo/turbojpeg/TJLoader.java.in
-  "${CMAKE_CURRENT_BINARY_DIR}/org/libjpegturbo/turbojpeg/TJLoader.java")
+  ${CMAKE_CURRENT_BINARY_DIR}/org/libjpegturbo/turbojpeg/TJLoader.java)
 
 set(JAVA_SOURCES "")
 set(JAVA_CLASSES "")
 set(JAVA_CLASSES_FULL "")
 foreach(class ${JAVA_CLASSNAMES})
-  list(APPEND JAVA_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/${class}.java")
+  set(JAVA_SOURCES ${JAVA_SOURCES} ${CMAKE_CURRENT_SOURCE_DIR}/${class}.java)
-  list(APPEND JAVA_CLASSES "${class}.class")
+  set(JAVA_CLASSES ${JAVA_CLASSES} ${class}.class)
-  list(APPEND JAVA_CLASSES_FULL "${OBJDIR}/${class}.class")
+  set(JAVA_CLASSES_FULL ${JAVA_CLASSES_FULL} ${OBJDIR}/${class}.class)
 endforeach()
 
-list(APPEND JAVA_SOURCES
+set(JAVA_SOURCES ${JAVA_SOURCES}
-  "${CMAKE_CURRENT_BINARY_DIR}/org/libjpegturbo/turbojpeg/TJLoader.java")
+  ${CMAKE_CURRENT_BINARY_DIR}/org/libjpegturbo/turbojpeg/TJLoader.java)
-list(APPEND JAVA_CLASSES org/libjpegturbo/turbojpeg/TJLoader.class)
+set(JAVA_CLASSES ${JAVA_CLASSES}
-list(APPEND JAVA_CLASSES_FULL
+  org/libjpegturbo/turbojpeg/TJLoader.class)
-  "${OBJDIR}/org/libjpegturbo/turbojpeg/TJLoader.class")
+set(JAVA_CLASSES_FULL ${JAVA_CLASSES_FULL}
+  ${OBJDIR}/org/libjpegturbo/turbojpeg/TJLoader.class)
 
 string(REGEX REPLACE " " ";" JAVACFLAGS "${JAVACFLAGS}")
 add_custom_command(OUTPUT ${JAVA_CLASSES_FULL} DEPENDS ${JAVA_SOURCES}
-  COMMAND "${JAVA_COMPILE}" ARGS ${JAVACFLAGS} -d "${OBJDIR}" ${JAVA_SOURCES}
+  COMMAND ${JAVA_COMPILE} ARGS ${JAVACFLAGS} -d ${OBJDIR} ${JAVA_SOURCES})
-  VERBATIM)
 
-add_custom_command(OUTPUT "${JAR_FILE}" DEPENDS ${JAVA_CLASSES_FULL}
+add_custom_command(OUTPUT ${JAR_FILE} DEPENDS ${JAVA_CLASSES_FULL}
-  "${MANIFEST_FILE}"
+  ${MANIFEST_FILE}
-  COMMAND "${JAVA_ARCHIVE}" cfm "${JAR_FILE}" "${MANIFEST_FILE}" ${JAVA_CLASSES}
+  COMMAND ${JAVA_ARCHIVE} cfm ${JAR_FILE} ${MANIFEST_FILE} ${JAVA_CLASSES}
-  WORKING_DIRECTORY "${OBJDIR}"
+  WORKING_DIRECTORY ${OBJDIR})
-  VERBATIM)
 
-add_custom_target(java ALL DEPENDS "${JAR_FILE}")
+add_custom_target(java ALL DEPENDS ${JAR_FILE})
 
-install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${JAR_FILE}" DESTINATION classes)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${JAR_FILE} DESTINATION classes)

jcapimin.c

@@ -4,9 +4,10 @@
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
  * Modified 2003-2010 by Guido Vollbeding.
- * libjpeg-turbo Modifications:
+ * It was modified by The libjpeg-turbo Project to include only code relevant
- * Copyright (C) 2014, D. R. Commander.
+ * to libjpeg-turbo.
- * For conditions of distribution and use, see the accompanying README file.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains application interface code for the compression half
  * of the JPEG library.  These are the "minimum" API routines that may be
@@ -22,8 +23,6 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jmemsys.h"
-#include "jcmaster.h"
 
 
 /*
@@ -93,16 +92,6 @@ jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize)
 
   /* OK, I'm ready */
   cinfo->global_state = CSTATE_START;
-
-  /* The master struct is used to store extension parameters, so we allocate it
-   * here.  It is later reallocated by jinit_c_master_control().
-   */
-  cinfo->master = (struct jpeg_comp_master *)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
-                                  sizeof(my_comp_master));
-  MEMZERO(cinfo->master, sizeof(my_comp_master));
-
-  cinfo->master->compress_profile = JCP_MAX_COMPRESSION;
 }
 
 

jcapistd.c

@@ -3,9 +3,8 @@
  *
  * Copyright (C) 1994-1996, Thomas G. Lane.
  * This file is part of the Independent JPEG Group's software.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains application interface code for the compression half
  * of the JPEG library.  These are the "standard" API routines that are
@@ -45,11 +44,6 @@ jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables)
   if (write_all_tables)
     jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */
 
-  /* setting up scan optimisation pattern failed, disable scan optimisation */
-  if (cinfo->master->num_scans_luma == 0 || cinfo->scan_info == NULL ||
-      cinfo->num_scans == 0)
-    cinfo->master->optimize_scans = FALSE;
-  
   /* (Re)initialize error mgr and destination modules */
   (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
   (*cinfo->dest->init_destination) (cinfo);

jcarith.c

@@ -3,9 +3,10 @@
  *
  * This file was part of the Independent JPEG Group's software:
  * Developed 1997-2009 by Guido Vollbeding.
- * It was modified by The libjpeg-turbo Project to include only code relevant
+ * libjpeg-turbo Modifications:
- * to libjpeg-turbo.
+ * Copyright (C) 2015, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README file.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains portable arithmetic entropy encoding routines for JPEG
  * (implementing the ISO/IEC IS 10918-1 and CCITT Recommendation ITU-T T.81).
@@ -18,7 +19,7 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include <math.h>
+
 
 /* Expanded entropy encoder object for arithmetic encoding. */
 
@@ -120,10 +121,6 @@ emit_byte (int val, j_compress_ptr cinfo)
 {
   struct jpeg_destination_mgr *dest = cinfo->dest;
 
-  /* Do not emit bytes during trellis passes */
-  if (cinfo->master->trellis_passes)
-    return;
-  
   *dest->next_output_byte++ = (JOCTET) val;
   if (--dest->free_in_buffer == 0)
     if (! (*dest->empty_output_buffer) (cinfo))
@@ -830,7 +827,6 @@ start_pass (j_compress_ptr cinfo, boolean gather_statistics)
   arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
   int ci, tbl;
   jpeg_component_info *compptr;
-  boolean progressive_mode;
 
   if (gather_statistics)
     /* Make sure to avoid that in the master control logic!
@@ -841,12 +837,8 @@ start_pass (j_compress_ptr cinfo, boolean gather_statistics)
 
   /* We assume jcmaster.c already validated the progressive scan parameters. */
 
-  /* Trellis optimization does DC and AC in same pass and without refinement
-   * so consider progressive mode to be off in such case */
-  progressive_mode = (cinfo->master->trellis_passes) ? FALSE : cinfo->progressive_mode;
-  
   /* Select execution routines */
-  if (progressive_mode) {
+  if (cinfo->progressive_mode) {
     if (cinfo->Ah == 0) {
       if (cinfo->Ss == 0)
         entropy->pub.encode_mcu = encode_mcu_DC_first;
@@ -865,7 +857,7 @@ start_pass (j_compress_ptr cinfo, boolean gather_statistics)
   for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
     compptr = cinfo->cur_comp_info[ci];
     /* DC needs no table for refinement scan */
-    if (progressive_mode == 0 || (cinfo->Ss == 0 && cinfo->Ah == 0)) {
+    if (cinfo->progressive_mode == 0 || (cinfo->Ss == 0 && cinfo->Ah == 0)) {
       tbl = compptr->dc_tbl_no;
       if (tbl < 0 || tbl >= NUM_ARITH_TBLS)
         ERREXIT1(cinfo, JERR_NO_ARITH_TABLE, tbl);
@@ -878,7 +870,7 @@ start_pass (j_compress_ptr cinfo, boolean gather_statistics)
       entropy->dc_context[ci] = 0;
     }
     /* AC needs no table when not present */
-    if (progressive_mode == 0 || cinfo->Se) {
+    if (cinfo->progressive_mode == 0 || cinfo->Se) {
       tbl = compptr->ac_tbl_no;
       if (tbl < 0 || tbl >= NUM_ARITH_TBLS)
         ERREXIT1(cinfo, JERR_NO_ARITH_TABLE, tbl);
@@ -887,7 +879,7 @@ start_pass (j_compress_ptr cinfo, boolean gather_statistics)
           ((j_common_ptr) cinfo, JPOOL_IMAGE, AC_STAT_BINS);
       MEMZERO(entropy->ac_stats[tbl], AC_STAT_BINS);
 #ifdef CALCULATE_SPECTRAL_CONDITIONING
-      if (progressive_mode)
+      if (cinfo->progressive_mode)
         /* Section G.1.3.2: Set appropriate arithmetic conditioning value Kx */
         cinfo->arith_ac_K[tbl] = cinfo->Ss + ((8 + cinfo->Se - cinfo->Ss) >> 4);
 #endif
@@ -934,34 +926,3 @@ jinit_arith_encoder (j_compress_ptr cinfo)
   /* Initialize index for fixed probability estimation */
   entropy->fixed_bin[0] = 113;
 }
-
-GLOBAL(void)
-jget_arith_rates (j_compress_ptr cinfo, int dc_tbl_no, int ac_tbl_no, arith_rates *r)
-{
-  int i;
-  arith_entropy_ptr entropy = (arith_entropy_ptr) cinfo->entropy;
-  
-  r->arith_dc_L = cinfo->arith_dc_L[dc_tbl_no];
-  r->arith_dc_U = cinfo->arith_dc_U[dc_tbl_no];
-  r->arith_ac_K = cinfo->arith_ac_K[ac_tbl_no];
-  
-  for (i = 0; i < DC_STAT_BINS; i++) {
-    int state = entropy->dc_stats[dc_tbl_no][i];
-    int mps_val = state >> 7;
-    float prob_lps = (jpeg_aritab[state & 0x7f] >> 16) / 46340.95; /* 32768*sqrt(2) */
-    float prob_0 = (mps_val) ? prob_lps : 1.0 - prob_lps;
-    float prob_1 = 1.0 - prob_0;
-    r->rate_dc[i][0] = -log(prob_0) / log(2.0);
-    r->rate_dc[i][1] = -log(prob_1) / log(2.0);
-  }
-
-  for (i = 0; i < AC_STAT_BINS; i++) {
-    int state = entropy->ac_stats[ac_tbl_no][i];
-    int mps_val = state >> 7;
-    float prob_lps = (jpeg_aritab[state & 0x7f] >> 16) / 46340.95;
-    float prob_0 = (mps_val) ? prob_lps : 1.0 - prob_lps;
-    float prob_1 = 1.0 - prob_0;
-    r->rate_ac[i][0] = -log(prob_0) / log(2.0);
-    r->rate_ac[i][1] = -log(prob_1) / log(2.0);
-  }
-}

jccoefct.c

@@ -5,9 +5,8 @@
  * Copyright (C) 1994-1997, Thomas G. Lane.
  * It was modified by The libjpeg-turbo Project to include only code and
  * information relevant to libjpeg-turbo.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the coefficient buffer controller for compression.
  * This controller is the top level of the JPEG compressor proper.
@@ -17,7 +16,7 @@
 #define JPEG_INTERNALS
 #include "jinclude.h"
 #include "jpeglib.h"
-#include "jchuff.h"
+
 
 /* We use a full-image coefficient buffer when doing Huffman optimization,
  * and also for writing multiple-scan JPEG files.  In all cases, the DCT
@@ -53,10 +52,6 @@ typedef struct {
 
   /* In multi-pass modes, we need a virtual block array for each component. */
   jvirt_barray_ptr whole_image[MAX_COMPONENTS];
-
-  /* when using trellis quantization, need to keep a copy of all unquantized coefficients */
-  jvirt_barray_ptr whole_image_uq[MAX_COMPONENTS];
-
 } my_coef_controller;
 
 typedef my_coef_controller *my_coef_ptr;
@@ -71,8 +66,6 @@ METHODDEF(boolean) compress_first_pass
 METHODDEF(boolean) compress_output
         (j_compress_ptr cinfo, JSAMPIMAGE input_buf);
 #endif
-METHODDEF(boolean) compress_trellis_pass
-        (j_compress_ptr cinfo, JSAMPIMAGE input_buf);
 
 
 LOCAL(void)
@@ -129,12 +122,6 @@ start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
     coef->pub.compress_data = compress_output;
     break;
 #endif
-  case JBUF_REQUANT:
-    if (coef->whole_image[0] == NULL)
-      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
-    coef->pub.compress_data = compress_trellis_pass;
-    break;
-      
   default:
     ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
     break;
@@ -190,8 +177,7 @@ compress_data (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
             (*cinfo->fdct->forward_DCT) (cinfo, compptr,
                                          input_buf[compptr->component_index],
                                          coef->MCU_buffer[blkn],
-                                         ypos, xpos, (JDIMENSION) blockcnt,
+                                         ypos, xpos, (JDIMENSION) blockcnt);
-                                         NULL);
             if (blockcnt < compptr->MCU_width) {
               /* Create some dummy blocks at the right edge of the image. */
               jzero_far((void *) coef->MCU_buffer[blkn + blockcnt],
@@ -266,7 +252,6 @@ compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
   jpeg_component_info *compptr;
   JBLOCKARRAY buffer;
   JBLOCKROW thisblockrow, lastblockrow;
-  JBLOCKARRAY buffer_dst;
 
   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
        ci++, compptr++) {
@@ -275,12 +260,6 @@ compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
       ((j_common_ptr) cinfo, coef->whole_image[ci],
        coef->iMCU_row_num * compptr->v_samp_factor,
        (JDIMENSION) compptr->v_samp_factor, TRUE);
-    
-    buffer_dst = (*cinfo->mem->access_virt_barray)
-      ((j_common_ptr) cinfo, coef->whole_image_uq[ci],
-       coef->iMCU_row_num * compptr->v_samp_factor,
-       (JDIMENSION) compptr->v_samp_factor, TRUE);
-    
     /* Count non-dummy DCT block rows in this iMCU row. */
     if (coef->iMCU_row_num < last_iMCU_row)
       block_rows = compptr->v_samp_factor;
@@ -303,8 +282,7 @@ compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
       (*cinfo->fdct->forward_DCT) (cinfo, compptr,
                                    input_buf[ci], thisblockrow,
                                    (JDIMENSION) (block_row * DCTSIZE),
-                                   (JDIMENSION) 0, blocks_across,
+                                   (JDIMENSION) 0, blocks_across);
-                                   buffer_dst[block_row]);
       if (ndummy > 0) {
         /* Create dummy blocks at the right edge of the image. */
         thisblockrow += blocks_across; /* => first dummy block */
@@ -348,136 +326,6 @@ compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
   return compress_output(cinfo, input_buf);
 }
 
-METHODDEF(boolean)
-compress_trellis_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
-{
-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
-  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
-  JDIMENSION blocks_across, MCUs_across, MCUindex;
-  int bi, ci, h_samp_factor, block_row, block_rows, ndummy;
-  JCOEF lastDC;
-  jpeg_component_info *compptr;
-  JBLOCKARRAY buffer;
-  JBLOCKROW thisblockrow, lastblockrow;
-  JBLOCKARRAY buffer_dst;
-
-  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
-    c_derived_tbl dctbl_data;
-    c_derived_tbl *dctbl = &dctbl_data;
-    c_derived_tbl actbl_data;
-    c_derived_tbl *actbl = &actbl_data;
-    
-#ifdef C_ARITH_CODING_SUPPORTED
-    arith_rates arith_r_data;
-    arith_rates *arith_r = &arith_r_data;
-#endif
-    
-    compptr = cinfo->cur_comp_info[ci];
-
-#ifdef C_ARITH_CODING_SUPPORTED
-    if (cinfo->arith_code)
-      jget_arith_rates(cinfo, compptr->dc_tbl_no, compptr->ac_tbl_no, arith_r);
-    else
-#endif
-    {
-      jpeg_make_c_derived_tbl(cinfo, TRUE, compptr->dc_tbl_no, &dctbl);
-      jpeg_make_c_derived_tbl(cinfo, FALSE, compptr->ac_tbl_no, &actbl);
-    }
-
-    /* Align the virtual buffer for this component. */
-    buffer = (*cinfo->mem->access_virt_barray)
-    ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
-     coef->iMCU_row_num * compptr->v_samp_factor,
-     (JDIMENSION) compptr->v_samp_factor, TRUE);
-    
-    buffer_dst = (*cinfo->mem->access_virt_barray)
-    ((j_common_ptr) cinfo, coef->whole_image_uq[compptr->component_index],
-     coef->iMCU_row_num * compptr->v_samp_factor,
-     (JDIMENSION) compptr->v_samp_factor, TRUE);
-    
-    /* Count non-dummy DCT block rows in this iMCU row. */
-    if (coef->iMCU_row_num < last_iMCU_row)
-      block_rows = compptr->v_samp_factor;
-    else {
-      /* NB: can't use last_row_height here, since may not be set! */
-      block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
-      if (block_rows == 0) block_rows = compptr->v_samp_factor;
-    }
-    blocks_across = compptr->width_in_blocks;
-    h_samp_factor = compptr->h_samp_factor;
-    /* Count number of dummy blocks to be added at the right margin. */
-    ndummy = (int) (blocks_across % h_samp_factor);
-    if (ndummy > 0)
-      ndummy = h_samp_factor - ndummy;
-    
-    lastDC = 0;
-    
-    /* Perform DCT for all non-dummy blocks in this iMCU row.  Each call
-     * on forward_DCT processes a complete horizontal row of DCT blocks.
-     */
-    for (block_row = 0; block_row < block_rows; block_row++) {
-      thisblockrow = buffer[block_row];
-      lastblockrow = (block_row > 0) ? buffer[block_row-1] : NULL;
-#ifdef C_ARITH_CODING_SUPPORTED
-      if (cinfo->arith_code)
-        quantize_trellis_arith(cinfo, arith_r, thisblockrow,
-                               buffer_dst[block_row], blocks_across,
-                               cinfo->quant_tbl_ptrs[compptr->quant_tbl_no],
-                               cinfo->master->norm_src[compptr->quant_tbl_no],
-                               cinfo->master->norm_coef[compptr->quant_tbl_no],
-                               &lastDC, lastblockrow, buffer_dst[block_row-1]);
-      else
-#endif
-        quantize_trellis(cinfo, dctbl, actbl, thisblockrow,
-                         buffer_dst[block_row], blocks_across,
-                         cinfo->quant_tbl_ptrs[compptr->quant_tbl_no],
-                         cinfo->master->norm_src[compptr->quant_tbl_no],
-                         cinfo->master->norm_coef[compptr->quant_tbl_no],
-                         &lastDC, lastblockrow, buffer_dst[block_row-1]);
-      
-      if (ndummy > 0) {
-        /* Create dummy blocks at the right edge of the image. */
-        thisblockrow += blocks_across; /* => first dummy block */
-        jzero_far((void *) thisblockrow, ndummy * sizeof(JBLOCK));
-        lastDC = thisblockrow[-1][0];
-        for (bi = 0; bi < ndummy; bi++) {
-          thisblockrow[bi][0] = lastDC;
-        }
-      }
-    }
-    /* If at end of image, create dummy block rows as needed.
-     * The tricky part here is that within each MCU, we want the DC values
-     * of the dummy blocks to match the last real block's DC value.
-     * This squeezes a few more bytes out of the resulting file...
-     */
-    if (coef->iMCU_row_num == last_iMCU_row) {
-      blocks_across += ndummy;  /* include lower right corner */
-      MCUs_across = blocks_across / h_samp_factor;
-      for (block_row = block_rows; block_row < compptr->v_samp_factor;
-           block_row++) {
-        thisblockrow = buffer[block_row];
-        lastblockrow = buffer[block_row-1];
-        jzero_far((void *) thisblockrow,
-                  (size_t) (blocks_across * sizeof(JBLOCK)));
-        for (MCUindex = 0; MCUindex < MCUs_across; MCUindex++) {
-          lastDC = lastblockrow[h_samp_factor-1][0];
-          for (bi = 0; bi < h_samp_factor; bi++) {
-            thisblockrow[bi][0] = lastDC;
-          }
-          thisblockrow += h_samp_factor; /* advance to next MCU in row */
-          lastblockrow += h_samp_factor;
-        }
-      }
-    }
-  }
-
-  /* NB: compress_output will increment iMCU_row_num if successful.
-   * A suspension return will result in redoing all the work above next time.
-   */
-  
-  /* Emit data to the entropy encoder, sharing code with subsequent passes */
-  return compress_output(cinfo, input_buf);
-}
 
 /*
  * Process some data in subsequent passes of a multi-pass case.
@@ -581,14 +429,6 @@ jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer)
          (JDIMENSION) jround_up((long) compptr->height_in_blocks,
                                 (long) compptr->v_samp_factor),
          (JDIMENSION) compptr->v_samp_factor);
-      
-      coef->whole_image_uq[ci] = (*cinfo->mem->request_virt_barray)
-        ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
-         (JDIMENSION) jround_up((long) compptr->width_in_blocks,
-                                (long) compptr->h_samp_factor),
-         (JDIMENSION) jround_up((long) compptr->height_in_blocks,
-                                (long) compptr->v_samp_factor),
-         (JDIMENSION) compptr->v_samp_factor);
     }
 #else
     ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

jcext.c

@@ -1,219 +0,0 @@
-/*
- * jcext.c
- *
- * Copyright (C) 2014, D. R. Commander.
- * Copyright (C) 2014, Mozilla Corporation.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This file contains accessor functions for extension parameters.  These
- * allow for extending the functionality of the libjpeg API without breaking
- * backward ABI compatibility.
- */
-
-#define JPEG_INTERNALS
-#include "jinclude.h"
-#include "jpeglib.h"
-
-
-GLOBAL(boolean)
-jpeg_c_bool_param_supported (const j_compress_ptr cinfo, J_BOOLEAN_PARAM param)
-{
-  switch (param) {
-  case JBOOLEAN_OPTIMIZE_SCANS:
-  case JBOOLEAN_TRELLIS_QUANT:
-  case JBOOLEAN_TRELLIS_QUANT_DC:
-  case JBOOLEAN_TRELLIS_EOB_OPT:
-  case JBOOLEAN_USE_LAMBDA_WEIGHT_TBL:
-  case JBOOLEAN_USE_SCANS_IN_TRELLIS:
-  case JBOOLEAN_TRELLIS_Q_OPT:
-  case JBOOLEAN_OVERSHOOT_DERINGING:
-    return TRUE;
-  }
-
-  return FALSE;
-}
-
-
-GLOBAL(void)
-jpeg_c_set_bool_param (j_compress_ptr cinfo, J_BOOLEAN_PARAM param,
-                       boolean value)
-{
-  switch(param) {
-  case JBOOLEAN_OPTIMIZE_SCANS:
-    cinfo->master->optimize_scans = value;
-    break;
-  case JBOOLEAN_TRELLIS_QUANT:
-    cinfo->master->trellis_quant = value;
-    break;
-  case JBOOLEAN_TRELLIS_QUANT_DC:
-    cinfo->master->trellis_quant_dc = value;
-    break;
-  case JBOOLEAN_TRELLIS_EOB_OPT:
-    cinfo->master->trellis_eob_opt = value;
-    break;
-  case JBOOLEAN_USE_LAMBDA_WEIGHT_TBL:
-    cinfo->master->use_lambda_weight_tbl = value;
-    break;
-  case JBOOLEAN_USE_SCANS_IN_TRELLIS:
-    cinfo->master->use_scans_in_trellis = value;
-    break;
-  case JBOOLEAN_TRELLIS_Q_OPT:
-    cinfo->master->trellis_q_opt = value;
-    break;
-  case JBOOLEAN_OVERSHOOT_DERINGING:
-    cinfo->master->overshoot_deringing = value;
-    break;
-  default:
-    ERREXIT(cinfo, JERR_BAD_PARAM);
-  }
-}
-
-
-GLOBAL(boolean)
-jpeg_c_get_bool_param (const j_compress_ptr cinfo, J_BOOLEAN_PARAM param)
-{
-  switch(param) {
-  case JBOOLEAN_OPTIMIZE_SCANS:
-    return cinfo->master->optimize_scans;
-  case JBOOLEAN_TRELLIS_QUANT:
-    return cinfo->master->trellis_quant;
-  case JBOOLEAN_TRELLIS_QUANT_DC:
-    return cinfo->master->trellis_quant_dc;
-  case JBOOLEAN_TRELLIS_EOB_OPT:
-    return cinfo->master->trellis_eob_opt;
-  case JBOOLEAN_USE_LAMBDA_WEIGHT_TBL:
-    return cinfo->master->use_lambda_weight_tbl;
-  case JBOOLEAN_USE_SCANS_IN_TRELLIS:
-    return cinfo->master->use_scans_in_trellis;
-  case JBOOLEAN_TRELLIS_Q_OPT:
-    return cinfo->master->trellis_q_opt;
-  case JBOOLEAN_OVERSHOOT_DERINGING:
-    return cinfo->master->overshoot_deringing;
-  default:
-    ERREXIT(cinfo, JERR_BAD_PARAM);
-  }
-
-  return FALSE;
-}
-
-
-GLOBAL(boolean)
-jpeg_c_float_param_supported (const j_compress_ptr cinfo, J_FLOAT_PARAM param)
-{
-  switch (param) {
-  case JFLOAT_LAMBDA_LOG_SCALE1:
-  case JFLOAT_LAMBDA_LOG_SCALE2:
-  case JFLOAT_TRELLIS_DELTA_DC_WEIGHT:
-    return TRUE;
-  }
-
-  return FALSE;
-}
-
-
-GLOBAL(void)
-jpeg_c_set_float_param (j_compress_ptr cinfo, J_FLOAT_PARAM param, float value)
-{
-  switch (param) {
-  case JFLOAT_LAMBDA_LOG_SCALE1:
-    cinfo->master->lambda_log_scale1 = value;
-    break;
-  case JFLOAT_LAMBDA_LOG_SCALE2:
-    cinfo->master->lambda_log_scale2 = value;
-    break;
-  case JFLOAT_TRELLIS_DELTA_DC_WEIGHT:
-    cinfo->master->trellis_delta_dc_weight = value;
-    break;
-  default:
-    ERREXIT(cinfo, JERR_BAD_PARAM);
-  }
-}
-
-
-GLOBAL(float)
-jpeg_c_get_float_param (const j_compress_ptr cinfo, J_FLOAT_PARAM param)
-{
-  switch (param) {
-  case JFLOAT_LAMBDA_LOG_SCALE1:
-    return cinfo->master->lambda_log_scale1;
-  case JFLOAT_LAMBDA_LOG_SCALE2:
-    return cinfo->master->lambda_log_scale2;
-  case JFLOAT_TRELLIS_DELTA_DC_WEIGHT:
-    return cinfo->master->trellis_delta_dc_weight;
-  default:
-    ERREXIT(cinfo, JERR_BAD_PARAM);
-  }
-
-  return -1;
-}
-
-
-GLOBAL(boolean)
-jpeg_c_int_param_supported (const j_compress_ptr cinfo, J_INT_PARAM param)
-{
-  switch (param) {
-  case JINT_COMPRESS_PROFILE:
-  case JINT_TRELLIS_FREQ_SPLIT:
-  case JINT_TRELLIS_NUM_LOOPS:
-  case JINT_BASE_QUANT_TBL_IDX:
-  case JINT_DC_SCAN_OPT_MODE:
-    return TRUE;
-  }
-
-  return FALSE;
-}
-
-
-GLOBAL(void)
-jpeg_c_set_int_param (j_compress_ptr cinfo, J_INT_PARAM param, int value)
-{
-  switch (param) {
-  case JINT_COMPRESS_PROFILE:
-    switch (value) {
-    case JCP_MAX_COMPRESSION:
-    case JCP_FASTEST:
-      cinfo->master->compress_profile = value;
-      break;
-    default:
-      ERREXIT(cinfo, JERR_BAD_PARAM_VALUE);
-    }
-    break;
-  case JINT_TRELLIS_FREQ_SPLIT:
-    cinfo->master->trellis_freq_split = value;
-    break;
-  case JINT_TRELLIS_NUM_LOOPS:
-    cinfo->master->trellis_num_loops = value;
-    break;
-  case JINT_BASE_QUANT_TBL_IDX:
-    if (value >= 0 && value <= 8)
-      cinfo->master->quant_tbl_master_idx = value;
-    break;
-  case JINT_DC_SCAN_OPT_MODE:
-    cinfo->master->dc_scan_opt_mode = value;
-    break;
-  default:
-    ERREXIT(cinfo, JERR_BAD_PARAM);
-  }
-}
-
-
-GLOBAL(int)
-jpeg_c_get_int_param (const j_compress_ptr cinfo, J_INT_PARAM param)
-{
-  switch (param) {
-  case JINT_COMPRESS_PROFILE:
-    return cinfo->master->compress_profile;
-  case JINT_TRELLIS_FREQ_SPLIT:
-    return cinfo->master->trellis_freq_split;
-  case JINT_TRELLIS_NUM_LOOPS:
-    return cinfo->master->trellis_num_loops;
-  case JINT_BASE_QUANT_TBL_IDX:
-    return cinfo->master->quant_tbl_master_idx;
-  case JINT_DC_SCAN_OPT_MODE:
-    return cinfo->master->dc_scan_opt_mode;
-  default:
-    ERREXIT(cinfo, JERR_BAD_PARAM);
-  }
-
-  return -1;
-}

jchuff.h

@@ -5,9 +5,8 @@
  * Copyright (C) 1991-1997, Thomas G. Lane.
  * It was modified by The libjpeg-turbo Project to include only code relevant
  * to libjpeg-turbo.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains declarations for Huffman entropy encoding routines
  * that are shared between the sequential encoder (jchuff.c) and the
@@ -42,8 +41,3 @@ EXTERN(void) jpeg_make_c_derived_tbl
 /* Generate an optimal table definition given the specified counts */
 EXTERN(void) jpeg_gen_optimal_table
         (j_compress_ptr cinfo, JHUFF_TBL *htbl, long freq[]);
-
-EXTERN(void) quantize_trellis
-        (j_compress_ptr cinfo, c_derived_tbl *dctbl, c_derived_tbl *actbl, JBLOCKROW coef_blocks, JBLOCKROW src, JDIMENSION num_blocks,
-                 JQUANT_TBL * qtbl, double *norm_src, double *norm_coef, JCOEF *last_dc_val,
-         JBLOCKROW coef_blocks_above, JBLOCKROW src_above);

jcinit.c

@@ -3,9 +3,8 @@
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
  * This file is part of the Independent JPEG Group's software.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains initialization logic for the JPEG compressor.
  * This routine is in charge of selecting the modules to be executed and
@@ -62,8 +61,7 @@ jinit_compress_master (j_compress_ptr cinfo)
 
   /* Need a full-image coefficient buffer in any multi-pass mode. */
   jinit_c_coef_controller(cinfo,
-    (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding ||
+                (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding));
-               cinfo->master->optimize_scans || cinfo->master->trellis_quant));
   jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */);
 
   jinit_marker_writer(cinfo);

jcmarker.c

@@ -184,72 +184,6 @@ emit_dqt (j_compress_ptr cinfo, int index)
   return prec;
 }
 
-LOCAL(int)
-emit_multi_dqt (j_compress_ptr cinfo)
-/* Emits a DQT marker containing all quantization tables */
-/* Returns number of emitted 16-bit tables, or -1 for failed for baseline checking. */
-{
-  int prec[MAX_COMPONENTS];
-  int seen[MAX_COMPONENTS] = { 0 };
-  int fin_prec = 0;
-  int ci;
-  int size = 0;
-
-  if (cinfo->master->compress_profile == JCP_FASTEST)
-    return -1;
-
-  for (ci = 0; ci < cinfo->num_components; ci++) {
-    int tbl_num = cinfo->comp_info[ci].quant_tbl_no;
-    int i;
-    JQUANT_TBL * qtbl = cinfo->quant_tbl_ptrs[tbl_num];
-
-    if (qtbl == NULL || qtbl->sent_table == TRUE)
-      return -1;
-
-    prec[ci] = 0;
-    for (i = 0; i < DCTSIZE2; i++)
-      prec[ci] = !!(prec[ci] + (qtbl->quantval[i] > 255));
-
-    fin_prec += prec[ci];
-  }
-
-  emit_marker(cinfo, M_DQT);
-
-  for (ci = 0; ci < cinfo->num_components; ci++) {
-    int tbl_num = cinfo->comp_info[ci].quant_tbl_no;
-
-    if (!seen[tbl_num]) {
-      size += DCTSIZE2 * (prec[ci] + 1) + 1;
-      seen[tbl_num] = 1;
-    }
-  }
-  size += 2;
-
-  emit_2bytes(cinfo, size);
-
-  for (ci = 0; ci < cinfo->num_components; ci++) {
-    int tbl_num = cinfo->comp_info[ci].quant_tbl_no;
-    int i;
-    JQUANT_TBL * qtbl = cinfo->quant_tbl_ptrs[tbl_num];
-
-    if (qtbl->sent_table == TRUE)
-        continue;
-
-    emit_byte(cinfo, tbl_num + (prec[ci] << 4));
-
-    for (i = 0; i < DCTSIZE2; i++) {
-      unsigned int qval = qtbl->quantval[jpeg_natural_order[i]];
-
-      if (prec[ci])
-        emit_byte(cinfo, (int) (qval >> 8));
-      emit_byte(cinfo, (int) (qval & 0xFF));
-    }
-
-    qtbl->sent_table = TRUE;
-  }
-
-  return fin_prec;
-}
 
 LOCAL(void)
 emit_dht (j_compress_ptr cinfo, int index, boolean is_ac)
@@ -288,115 +222,6 @@ emit_dht (j_compress_ptr cinfo, int index, boolean is_ac)
   }
 }
 
-LOCAL(boolean)
-emit_multi_dht (j_compress_ptr cinfo)
-/* Emit all DHT markers */
-/* Returns FALSE on failure, TRUE otherwise. */
-{
-  int i, j;
-  int length = 2;
-  int dclens[NUM_HUFF_TBLS] = { 0 };
-  int aclens[NUM_HUFF_TBLS] = { 0 };
-  JHUFF_TBL *dcseen[NUM_HUFF_TBLS] = { NULL };
-  JHUFF_TBL *acseen[NUM_HUFF_TBLS] = { NULL };
-
-  if (cinfo->master->compress_profile == JCP_FASTEST)
-    return 0;
-
-  /* Calclate the total length. */
-  for (i = 0; i < cinfo->comps_in_scan; i++) {
-    jpeg_component_info *compptr = cinfo->cur_comp_info[i];
-    int dcidx = compptr->dc_tbl_no;
-    int acidx = compptr->ac_tbl_no;
-    JHUFF_TBL *dctbl = cinfo->dc_huff_tbl_ptrs[dcidx];
-    JHUFF_TBL *actbl = cinfo->ac_huff_tbl_ptrs[acidx];
-    int seen = 0;
-
-    /* Handle DC table lenghts */
-    if (cinfo->Ss == 0 && cinfo->Ah == 0) {
-      if (dctbl == NULL)
-        ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, dcidx);
-
-      if (dctbl->sent_table)
-          continue;
-
-      for (j = 0; j < NUM_HUFF_TBLS; j++)
-          seen += (dctbl == dcseen[j]);
-      if (seen)
-          continue;
-      dcseen[i] = dctbl;
-
-      for (j = 1; j <= 16; j++)
-        dclens[i] += dctbl->bits[j];
-      length += dclens[i] + 16 + 1;
-    }
-
-    /* Handle AC table lengths */
-    if (cinfo->Se) {
-      if (actbl == NULL)
-        ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, acidx + 0x10);
-
-      if (actbl->sent_table)
-          continue;
-
-      seen = 0;
-      for (j = 0; j < NUM_HUFF_TBLS; j++)
-          seen += (actbl == acseen[j]);
-      if (seen)
-          continue;
-      acseen[i] = actbl;
-
-      for (j = 1; j <= 16; j++)
-        aclens[i] += actbl->bits[j];
-      length += aclens[i] + 16 + 1;
-
-    }
-  }
-
-  /* Make sure we can fit it all into one DHT marker */
-  if (length > (1 << 16) - 1)
-    return FALSE;
-
-  emit_marker(cinfo, M_DHT);
-  emit_2bytes(cinfo, length);
-
-  for (i = 0; i < cinfo->comps_in_scan; i++) {
-    jpeg_component_info *compptr = cinfo->cur_comp_info[i];
-    int dcidx = compptr->dc_tbl_no;
-    int acidx = compptr->ac_tbl_no;
-    JHUFF_TBL *dctbl = cinfo->dc_huff_tbl_ptrs[dcidx];
-    JHUFF_TBL *actbl = cinfo->ac_huff_tbl_ptrs[acidx];
-
-    acidx += 0x10;
-
-    /* DC */
-    if (cinfo->Ss == 0 && cinfo->Ah == 0 && !dctbl->sent_table) {
-      emit_byte(cinfo, dcidx);
-
-      for (j = 1; j <= 16; j++)
-        emit_byte(cinfo, dctbl->bits[j]);
-
-      for (j = 0; j < dclens[i]; j++)
-        emit_byte(cinfo, dctbl->huffval[j]);
-
-      dctbl->sent_table = TRUE;
-    }
-
-    if (cinfo->Se && !actbl->sent_table) {
-      emit_byte(cinfo, acidx);
-
-      for (j = 1; j <= 16; j++)
-        emit_byte(cinfo, actbl->bits[j]);
-
-      for (j = 0; j < aclens[i]; j++)
-        emit_byte(cinfo, actbl->huffval[j]);
-
-      actbl->sent_table = TRUE;
-    }
-  }
-
-  return TRUE;
-}
 
 LOCAL(void)
 emit_dac (j_compress_ptr cinfo)
@@ -680,14 +505,11 @@ write_frame_header (j_compress_ptr cinfo)
   /* Emit DQT for each quantization table.
    * Note that emit_dqt() suppresses any duplicate tables.
    */
-  prec = emit_multi_dqt(cinfo);
-  if (prec == -1) {
   prec = 0;
   for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
        ci++, compptr++) {
     prec += emit_dqt(cinfo, compptr->quant_tbl_no);
   }
-  }
   /* now prec is nonzero iff there are any 16-bit quant tables. */
 
   /* Check for a non-baseline specification.
@@ -750,7 +572,6 @@ write_scan_header (j_compress_ptr cinfo)
     /* Emit Huffman tables.
      * Note that emit_dht() suppresses any duplicate tables.
      */
-    if (!emit_multi_dht(cinfo)) {
     for (i = 0; i < cinfo->comps_in_scan; i++) {
       compptr = cinfo->cur_comp_info[i];
       /* DC needs no table for refinement scan */
@@ -761,7 +582,6 @@ write_scan_header (j_compress_ptr cinfo)
         emit_dht(cinfo, compptr->ac_tbl_no, TRUE);
     }
   }
-  }
 
   /* Emit DRI if required --- note that DRI value could change for each scan.
    * We avoid wasting space with unnecessary DRIs, however.

jcmaster.c

@@ -6,9 +6,8 @@
  * Modified 2003-2010 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
  * Copyright (C) 2010, 2016, D. R. Commander.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains master control logic for the JPEG compressor.
  * These routines are concerned with parameter validation, initial setup,
@@ -21,11 +20,41 @@
 #include "jpeglib.h"
 #include "jpegcomp.h"
 #include "jconfigint.h"
-#include "jmemsys.h"
-#include "jcmaster.h"
 
 
+/* Private state */
+
+typedef enum {
+        main_pass,              /* input data, also do first output step */
+        huff_opt_pass,          /* Huffman code optimization pass */
+        output_pass             /* data output pass */
+} c_pass_type;
+
+typedef struct {
+  struct jpeg_comp_master pub;  /* public fields */
+
+  c_pass_type pass_type;        /* the type of the current pass */
+
+  int pass_number;              /* # of passes completed */
+  int total_passes;             /* total # of passes needed */
+
+  int scan_number;              /* current index in scan_info[] */
+
   /*
+   * This is here so we can add libjpeg-turbo version/build information to the
+   * global string table without introducing a new global symbol.  Adding this
+   * information to the global string table allows one to examine a binary
+   * object and determine which version of libjpeg-turbo it was built from or
+   * linked against.
+   */
+  const char *jpeg_version;
+
+} my_comp_master;
+
+typedef my_comp_master *my_master_ptr;
+
+
+/*
  * Support routines that do various essential calculations.
  */
 
@@ -160,14 +189,6 @@ validate_script (j_compress_ptr cinfo)
   /* -1 until that coefficient has been seen; then last Al for it */
 #endif
 
-  if (cinfo->master->optimize_scans) {
-    cinfo->progressive_mode = TRUE;
-    /* When we optimize scans, there is redundancy in the scan list
-     * and this function will fail. Therefore skip all this checking
-     */
-    return;
-  }
-  
   if (cinfo->num_scans <= 0)
     ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0);
 
@@ -296,27 +317,9 @@ select_scan_parameters (j_compress_ptr cinfo)
   int ci;
 
 #ifdef C_MULTISCAN_FILES_SUPPORTED
-  my_master_ptr master = (my_master_ptr) cinfo->master;
+  if (cinfo->scan_info != NULL) {
-  if (master->pass_number < master->pass_number_scan_opt_base) {
-    cinfo->comps_in_scan = 1;
-    if (cinfo->master->use_scans_in_trellis) {
-      cinfo->cur_comp_info[0] =
-        &cinfo->comp_info[master->pass_number / 
-                          (4 * cinfo->master->trellis_num_loops)];
-      cinfo->Ss = (master->pass_number % 4 < 2) ?
-                  1 : cinfo->master->trellis_freq_split + 1;
-      cinfo->Se = (master->pass_number % 4 < 2) ?
-                  cinfo->master->trellis_freq_split : DCTSIZE2 - 1;
-    } else {
-      cinfo->cur_comp_info[0] =
-        &cinfo->comp_info[master->pass_number /
-                          (2 * cinfo->master->trellis_num_loops)];
-      cinfo->Ss = 1;
-      cinfo->Se = DCTSIZE2-1;
-    }
-  }
-  else if (cinfo->scan_info != NULL) {
     /* Prepare for current scan --- the script is already validated */
+    my_master_ptr master = (my_master_ptr) cinfo->master;
     const jpeg_scan_info *scanptr = cinfo->scan_info + master->scan_number;
 
     cinfo->comps_in_scan = scanptr->comps_in_scan;
@@ -328,21 +331,6 @@ select_scan_parameters (j_compress_ptr cinfo)
     cinfo->Se = scanptr->Se;
     cinfo->Ah = scanptr->Ah;
     cinfo->Al = scanptr->Al;
-    if (cinfo->master->optimize_scans) {
-      /* luma frequency split passes */
-      if (master->scan_number >= cinfo->master->num_scans_luma_dc +
-                                 3 * cinfo->master->Al_max_luma + 2 &&
-          master->scan_number < cinfo->master->num_scans_luma)
-        cinfo->Al = master->best_Al_luma;
-      /* chroma frequency split passes */
-      if (master->scan_number >= cinfo->master->num_scans_luma +
-                                 cinfo->master->num_scans_chroma_dc +
-                                 (6 * cinfo->master->Al_max_chroma + 4) &&
-          master->scan_number < cinfo->num_scans)
-        cinfo->Al = master->best_Al_chroma;
-  }
-    /* save value for later retrieval during printout of scans */
-    master->actual_Al[master->scan_number] = cinfo->Al;
   }
   else
 #endif
@@ -460,8 +448,6 @@ METHODDEF(void)
 prepare_for_pass (j_compress_ptr cinfo)
 {
   my_master_ptr master = (my_master_ptr) cinfo->master;
-  cinfo->master->trellis_passes =
-    master->pass_number < master->pass_number_scan_opt_base;
 
   switch (master->pass_type) {
   case main_pass:
@@ -476,12 +462,12 @@ prepare_for_pass (j_compress_ptr cinfo)
       (*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU);
     }
     (*cinfo->fdct->start_pass) (cinfo);
-    (*cinfo->entropy->start_pass) (cinfo, (cinfo->optimize_coding || cinfo->master->trellis_quant) && !cinfo->arith_code);
+    (*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding);
     (*cinfo->coef->start_pass) (cinfo,
                                 (master->total_passes > 1 ?
                                  JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
     (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
-    if (cinfo->optimize_coding || cinfo->master->trellis_quant) {
+    if (cinfo->optimize_coding) {
       /* No immediate data output; postpone writing frame/scan headers */
       master->pub.call_pass_startup = FALSE;
     } else {
@@ -514,13 +500,6 @@ prepare_for_pass (j_compress_ptr cinfo)
       select_scan_parameters(cinfo);
       per_scan_setup(cinfo);
     }
-    if (cinfo->master->optimize_scans) {
-      master->saved_dest = cinfo->dest;
-      cinfo->dest = NULL;
-      master->scan_size[master->scan_number] = 0;
-      jpeg_mem_dest_internal(cinfo, &master->scan_buffer[master->scan_number], &master->scan_size[master->scan_number], JPOOL_IMAGE);
-      (*cinfo->dest->init_destination)(cinfo);
-    }
     (*cinfo->entropy->start_pass) (cinfo, FALSE);
     (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST);
     /* We emit frame/scan headers now */
@@ -529,24 +508,6 @@ prepare_for_pass (j_compress_ptr cinfo)
     (*cinfo->marker->write_scan_header) (cinfo);
     master->pub.call_pass_startup = FALSE;
     break;
-  case trellis_pass:
-    if (master->pass_number %
-        (cinfo->num_components * (cinfo->master->use_scans_in_trellis ? 4 : 2)) == 1 &&
-        cinfo->master->trellis_q_opt) {
-      int i, j;
-
-      for (i = 0; i < NUM_QUANT_TBLS; i++) {
-        for (j = 1; j < DCTSIZE2; j++) {
-          cinfo->master->norm_src[i][j] = 0.0;
-          cinfo->master->norm_coef[i][j] = 0.0;
-        }
-      }
-    }
-    (*cinfo->entropy->start_pass) (cinfo, !cinfo->arith_code);
-    (*cinfo->coef->start_pass) (cinfo, JBUF_REQUANT);
-    master->pub.call_pass_startup = FALSE;
-    break;
-      
   default:
     ERREXIT(cinfo, JERR_NOT_COMPILED);
   }
@@ -581,232 +542,6 @@ pass_startup (j_compress_ptr cinfo)
 }
 
 
-LOCAL(void)
-copy_buffer (j_compress_ptr cinfo, int scan_idx)
-{
-  my_master_ptr master = (my_master_ptr) cinfo->master;
-  
-  unsigned long size = master->scan_size[scan_idx];
-  unsigned char * src = master->scan_buffer[scan_idx];
-  int i;
-  
-  if (cinfo->err->trace_level > 0) {
-    fprintf(stderr, "SCAN ");
-    for (i = 0; i < cinfo->scan_info[scan_idx].comps_in_scan; i++)
-      fprintf(stderr, "%s%d", (i==0)?"":",", cinfo->scan_info[scan_idx].component_index[i]);
-    fprintf(stderr, ": %d %d", cinfo->scan_info[scan_idx].Ss, cinfo->scan_info[scan_idx].Se);
-    fprintf(stderr, " %d %d", cinfo->scan_info[scan_idx].Ah, master->actual_Al[scan_idx]);
-    fprintf(stderr, "\n");
-  }
-  
-  while (size >= cinfo->dest->free_in_buffer)
-  {
-    MEMCOPY(cinfo->dest->next_output_byte, src, cinfo->dest->free_in_buffer);
-    src += cinfo->dest->free_in_buffer;
-    size -= cinfo->dest->free_in_buffer;
-    cinfo->dest->next_output_byte += cinfo->dest->free_in_buffer;
-    cinfo->dest->free_in_buffer = 0;
-    
-    if (!(*cinfo->dest->empty_output_buffer)(cinfo))
-      ERREXIT(cinfo, JERR_UNSUPPORTED_SUSPEND);
-  }
-
-  MEMCOPY(cinfo->dest->next_output_byte, src, size);
-  cinfo->dest->next_output_byte += size;
-  cinfo->dest->free_in_buffer -= size;
-}
-
-LOCAL(void)
-select_scans (j_compress_ptr cinfo, int next_scan_number)
-{
-  my_master_ptr master = (my_master_ptr) cinfo->master;
-  
-  int base_scan_idx = 0;
-  int luma_freq_split_scan_start = cinfo->master->num_scans_luma_dc +
-                                   3 * cinfo->master->Al_max_luma + 2;
-  int chroma_freq_split_scan_start = cinfo->master->num_scans_luma +
-                                     cinfo->master->num_scans_chroma_dc +
-                                     (6 * cinfo->master->Al_max_chroma + 4);
-  int passes_per_scan = cinfo->optimize_coding ? 2 : 1;
-  
-  if (next_scan_number > 1 && next_scan_number <= luma_freq_split_scan_start) {
-    if ((next_scan_number - 1) % 3 == 2) {
-      int Al = (next_scan_number - 1) / 3;
-      int i;
-      unsigned long cost = 0;
-      cost += master->scan_size[next_scan_number-2];
-      cost += master->scan_size[next_scan_number-1];
-      for (i = 0; i < Al; i++)
-        cost += master->scan_size[3 + 3*i];
-      
-      if (Al == 0 || cost < master->best_cost) {
-        master->best_cost = cost;
-        master->best_Al_luma = Al;
-      } else {
-        master->scan_number = luma_freq_split_scan_start - 1;
-        master->pass_number = passes_per_scan * (master->scan_number + 1) - 1 + master->pass_number_scan_opt_base;
-      }
-    }
-  
-  } else if (next_scan_number > luma_freq_split_scan_start &&
-             next_scan_number <= cinfo->master->num_scans_luma) {
-    if (next_scan_number == luma_freq_split_scan_start + 1) {
-      master->best_freq_split_idx_luma = 0;
-      master->best_cost = master->scan_size[next_scan_number-1];
-      
-    } else if ((next_scan_number - luma_freq_split_scan_start) % 2 == 1) {
-      int idx = (next_scan_number - luma_freq_split_scan_start) >> 1;
-      unsigned long cost = 0;
-      cost += master->scan_size[next_scan_number-2];
-      cost += master->scan_size[next_scan_number-1];
-      
-      if (cost < master->best_cost) {
-        master->best_cost = cost;
-        master->best_freq_split_idx_luma = idx;
-      }
-      
-      /* if after testing first 3, no split is the best, don't search further */
-      if ((idx == 2 && master->best_freq_split_idx_luma == 0) ||
-          (idx == 3 && master->best_freq_split_idx_luma != 2) ||
-          (idx == 4 && master->best_freq_split_idx_luma != 4)) {
-        master->scan_number = cinfo->master->num_scans_luma - 1;
-        master->pass_number = passes_per_scan * (master->scan_number + 1) - 1 + master->pass_number_scan_opt_base;
-        master->pub.is_last_pass = (master->pass_number == master->total_passes - 1);
-      }
-    }
-    
-  } else if (cinfo->num_scans > cinfo->master->num_scans_luma) {
-
-    if (next_scan_number == cinfo->master->num_scans_luma + 
-                            cinfo->master->num_scans_chroma_dc) {
-      base_scan_idx = cinfo->master->num_scans_luma;
-
-      master->interleave_chroma_dc = master->scan_size[base_scan_idx] <= master->scan_size[base_scan_idx+1] + master->scan_size[base_scan_idx+2];
-      
-    } else if (next_scan_number > cinfo->master->num_scans_luma +
-                                  cinfo->master->num_scans_chroma_dc &&
-               next_scan_number <= chroma_freq_split_scan_start) {
-      base_scan_idx = cinfo->master->num_scans_luma +
-                      cinfo->master->num_scans_chroma_dc;
-      if ((next_scan_number - base_scan_idx) % 6 == 4) {
-        int Al = (next_scan_number - base_scan_idx) / 6;
-        int i;
-        unsigned long cost = 0;
-        cost += master->scan_size[next_scan_number-4];
-        cost += master->scan_size[next_scan_number-3];
-        cost += master->scan_size[next_scan_number-2];
-        cost += master->scan_size[next_scan_number-1];
-        for (i = 0; i < Al; i++) {
-          cost += master->scan_size[base_scan_idx + 4 + 6*i];
-          cost += master->scan_size[base_scan_idx + 5 + 6*i];
-        }
-        
-        if (Al == 0 || cost < master->best_cost) {
-          master->best_cost = cost;
-          master->best_Al_chroma = Al;
-        } else {
-          master->scan_number = chroma_freq_split_scan_start - 1;
-          master->pass_number = passes_per_scan * (master->scan_number + 1) - 1 + master->pass_number_scan_opt_base;
-        }
-      }
-
-    } else if (next_scan_number > chroma_freq_split_scan_start && next_scan_number <= cinfo->num_scans) {
-      if (next_scan_number == chroma_freq_split_scan_start + 2) {
-        master->best_freq_split_idx_chroma = 0;
-        master->best_cost  = master->scan_size[next_scan_number-2];
-        master->best_cost += master->scan_size[next_scan_number-1];
-        
-      } else if ((next_scan_number - chroma_freq_split_scan_start) % 4 == 2) {
-        int idx = (next_scan_number - chroma_freq_split_scan_start) >> 2;
-        unsigned long cost = 0;
-        cost += master->scan_size[next_scan_number-4];
-        cost += master->scan_size[next_scan_number-3];
-        cost += master->scan_size[next_scan_number-2];
-        cost += master->scan_size[next_scan_number-1];
-        
-        if (cost < master->best_cost) {
-          master->best_cost = cost;
-          master->best_freq_split_idx_chroma = idx;
-        }
-        
-        /* if after testing first 3, no split is the best, don't search further */
-        if ((idx == 2 && master->best_freq_split_idx_chroma == 0) ||
-            (idx == 3 && master->best_freq_split_idx_chroma != 2) ||
-            (idx == 4 && master->best_freq_split_idx_chroma != 4)) {
-          master->scan_number = cinfo->num_scans - 1;
-          master->pass_number = passes_per_scan * (master->scan_number + 1) - 1 + master->pass_number_scan_opt_base;
-          master->pub.is_last_pass = (master->pass_number == master->total_passes - 1);
-        }
-      }
-    }
-  }
-  
-  if (master->scan_number == cinfo->num_scans - 1) {
-    int i, Al;
-    int min_Al = MIN(master->best_Al_luma, master->best_Al_chroma);
-    
-    copy_buffer(cinfo, 0);
-
-    if (cinfo->num_scans > cinfo->master->num_scans_luma &&
-        cinfo->master->dc_scan_opt_mode != 0) {
-      base_scan_idx = cinfo->master->num_scans_luma;
-      
-      if (master->interleave_chroma_dc && cinfo->master->dc_scan_opt_mode != 1)
-        copy_buffer(cinfo, base_scan_idx);
-      else {
-        copy_buffer(cinfo, base_scan_idx+1);
-        copy_buffer(cinfo, base_scan_idx+2);
-      }
-    }
-    
-    if (master->best_freq_split_idx_luma == 0)
-      copy_buffer(cinfo, luma_freq_split_scan_start);
-    else {
-      copy_buffer(cinfo, luma_freq_split_scan_start+2*(master->best_freq_split_idx_luma-1)+1);
-      copy_buffer(cinfo, luma_freq_split_scan_start+2*(master->best_freq_split_idx_luma-1)+2);
-    }
-    
-    /* copy the LSB refinements as well */
-    for (Al = master->best_Al_luma-1; Al >= min_Al; Al--)
-      copy_buffer(cinfo, 3 + 3*Al);
-
-    if (cinfo->num_scans > cinfo->master->num_scans_luma) {
-      if (master->best_freq_split_idx_chroma == 0) {
-        copy_buffer(cinfo, chroma_freq_split_scan_start);
-        copy_buffer(cinfo, chroma_freq_split_scan_start+1);
-      }
-      else {
-        copy_buffer(cinfo, chroma_freq_split_scan_start+4*(master->best_freq_split_idx_chroma-1)+2);
-        copy_buffer(cinfo, chroma_freq_split_scan_start+4*(master->best_freq_split_idx_chroma-1)+3);
-        copy_buffer(cinfo, chroma_freq_split_scan_start+4*(master->best_freq_split_idx_chroma-1)+4);
-        copy_buffer(cinfo, chroma_freq_split_scan_start+4*(master->best_freq_split_idx_chroma-1)+5);
-      }
-      
-      base_scan_idx = cinfo->master->num_scans_luma +
-                      cinfo->master->num_scans_chroma_dc;
-      
-      for (Al = master->best_Al_chroma-1; Al >= min_Al; Al--) {
-        copy_buffer(cinfo, base_scan_idx + 6*Al + 4);
-        copy_buffer(cinfo, base_scan_idx + 6*Al + 5);
-      }
-    }
-    
-    for (Al = min_Al-1; Al >= 0; Al--) {
-      copy_buffer(cinfo, 3 + 3*Al);
-      
-      if (cinfo->num_scans > cinfo->master->num_scans_luma) {
-        copy_buffer(cinfo, base_scan_idx + 6*Al + 4);
-        copy_buffer(cinfo, base_scan_idx + 6*Al + 5);
-      }
-    }
-    
-    /* free the memory allocated for buffers */
-    for (i = 0; i < cinfo->num_scans; i++)
-      if (master->scan_buffer[i])
-        free(master->scan_buffer[i]);
-  }
-}
-
 /*
  * Finish up at end of pass.
  */
@@ -827,54 +562,20 @@ finish_pass_master (j_compress_ptr cinfo)
     /* next pass is either output of scan 0 (after optimization)
      * or output of scan 1 (if no optimization).
      */
-    if (cinfo->master->trellis_quant)
-      master->pass_type = trellis_pass;
-    else {
     master->pass_type = output_pass;
     if (! cinfo->optimize_coding)
       master->scan_number++;
-    }
     break;
   case huff_opt_pass:
     /* next pass is always output of current scan */
-    master->pass_type = (master->pass_number < master->pass_number_scan_opt_base-1) ? trellis_pass : output_pass;
+    master->pass_type = output_pass;
     break;
   case output_pass:
     /* next pass is either optimization or output of next scan */
     if (cinfo->optimize_coding)
       master->pass_type = huff_opt_pass;
-    if (cinfo->master->optimize_scans) {
-      (*cinfo->dest->term_destination)(cinfo);
-      cinfo->dest = master->saved_dest;
-      select_scans(cinfo, master->scan_number + 1);
-    }
-
     master->scan_number++;
     break;
-  case trellis_pass:
-    if (cinfo->optimize_coding)
-      master->pass_type = huff_opt_pass;
-    else
-      master->pass_type = (master->pass_number < master->pass_number_scan_opt_base-1) ? trellis_pass : output_pass;
-      
-    if ((master->pass_number + 1) %
-        (cinfo->num_components * (cinfo->master->use_scans_in_trellis ? 4 : 2)) == 0 &&
-        cinfo->master->trellis_q_opt) {
-      int i, j;
-
-      for (i = 0; i < NUM_QUANT_TBLS; i++) {
-        for (j = 1; j < DCTSIZE2; j++) {
-          if (cinfo->master->norm_coef[i][j] != 0.0) {
-            int q = (int)(cinfo->master->norm_src[i][j] /
-                          cinfo->master->norm_coef[i][j] + 0.5);
-            if (q > 254) q = 254;
-            if (q < 1) q = 1;
-            cinfo->quant_tbl_ptrs[i]->quantval[j] = q;
-  }
-        }
-      }
-    }
-    break;
   }
 
   master->pass_number++;
@@ -888,13 +589,16 @@ finish_pass_master (j_compress_ptr cinfo)
 GLOBAL(void)
 jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
 {
-  my_master_ptr master = (my_master_ptr) cinfo->master;
+  my_master_ptr master;
 
+  master = (my_master_ptr)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+                                  sizeof(my_comp_master));
+  cinfo->master = (struct jpeg_comp_master *) master;
   master->pub.prepare_for_pass = prepare_for_pass;
   master->pub.pass_startup = pass_startup;
   master->pub.finish_pass = finish_pass_master;
   master->pub.is_last_pass = FALSE;
-  master->pub.call_pass_startup = FALSE;
 
   /* Validate parameters, determine derived values */
   initial_setup(cinfo, transcode_only);
@@ -932,25 +636,4 @@ jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only)
     master->total_passes = cinfo->num_scans;
 
   master->jpeg_version = PACKAGE_NAME " version " VERSION " (build " BUILD ")";
-  
-  master->pass_number_scan_opt_base = 0;
-  if (cinfo->master->trellis_quant) {
-    if (cinfo->optimize_coding)
-      master->pass_number_scan_opt_base =
-        ((cinfo->master->use_scans_in_trellis) ? 4 : 2) * cinfo->num_components *
-        cinfo->master->trellis_num_loops;
-    else
-      master->pass_number_scan_opt_base =
-        ((cinfo->master->use_scans_in_trellis) ? 2 : 1) * cinfo->num_components *
-        cinfo->master->trellis_num_loops + 1;
-    master->total_passes += master->pass_number_scan_opt_base;
-}
-  
-  if (cinfo->master->optimize_scans) {
-    int i;
-    master->best_Al_chroma = 0;
-    
-    for (i = 0; i < cinfo->num_scans; i++)
-      master->scan_buffer[i] = NULL;
-  }
 }

jcmaster.h

@@ -1,56 +0,0 @@
-/*
- * jcmaster.h
- *
- * This file was part of the Independent JPEG Group's software:
- * Copyright (C) 1991-1997, Thomas G. Lane.
- * mozjpeg Modifications:
- * Copyright (C) 2014, Mozilla Corporation.
- * For conditions of distribution and use, see the accompanying README file.
- *
- * This file contains the master control structures for the JPEG compressor.
- */
-
-
-/* Private state */
-
-typedef enum {
-        main_pass,              /* input data, also do first output step */
-        huff_opt_pass,          /* Huffman code optimization pass */
-        output_pass,            /* data output pass */
-        trellis_pass            /* trellis quantization pass */
-} c_pass_type;
-
-typedef struct {
-  struct jpeg_comp_master pub;  /* public fields */
-
-  c_pass_type pass_type;        /* the type of the current pass */
-
-  int pass_number;              /* # of passes completed */
-  int total_passes;             /* total # of passes needed */
-
-  int scan_number;              /* current index in scan_info[] */
-
-  /* fields for scan optimisation */
-  int pass_number_scan_opt_base; /* pass number where scan optimization begins */
-  unsigned char * scan_buffer[64]; /* buffer for a given scan */
-  unsigned long scan_size[64]; /* size for a given scan */
-  int actual_Al[64]; /* actual value of Al used for a scan */
-  unsigned long best_cost; /* bit count for best frequency split */
-  int best_freq_split_idx_luma; /* index for best frequency split (luma) */
-  int best_freq_split_idx_chroma; /* index for best frequency split (chroma) */
-  int best_Al_luma; /* best value for Al found in scan search (luma) */
-  int best_Al_chroma; /* best value for Al found in scan search (luma) */
-  boolean interleave_chroma_dc; /* indicate whether to interleave chroma DC scans */
-  struct jpeg_destination_mgr * saved_dest; /* saved value of cinfo->dest */
-
-  /*
-   * This is here so we can add libjpeg-turbo version/build information to the
-   * global string table without introducing a new global symbol.  Adding this
-   * information to the global string table allows one to examine a binary
-   * object and determine which version of libjpeg-turbo it was built from or
-   * linked against.
-   */
-  const char *jpeg_version;
-} my_comp_master;
-
-typedef my_comp_master * my_master_ptr;

jconfig.h.in

@@ -71,6 +71,3 @@
 
 /* Define to `unsigned int' if <sys/types.h> does not define. */
 #undef size_t
-
-/* The size of `size_t', as computed by sizeof. */
-#undef SIZEOF_SIZE_T

jconfig.txt

@@ -115,7 +115,6 @@ typedef unsigned char boolean;
 
 /* These defines indicate which image (non-JPEG) file formats are allowed. */
 
-#define PNG_SUPPORTED           /* PNG image file format */
 #define BMP_SUPPORTED           /* BMP image file format */
 #define GIF_SUPPORTED           /* GIF image file format */
 #define PPM_SUPPORTED           /* PBMPLUS PPM/PGM image file format */

jcparam.c

@@ -6,9 +6,8 @@
  * Modified 2003-2008 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
  * Copyright (C) 2009-2011, D. R. Commander.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains optional default-setting code for the JPEG compressor.
  * Applications do not have to use this file, but those that don't use it
@@ -70,10 +69,7 @@ jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl,
  * The spec says that the values given produce "good" quality, and
  * when divided by 2, "very good" quality.
  */
-static const unsigned int std_luminance_quant_tbl[9][DCTSIZE2] = {
+static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = {
-  {
-    /* JPEG Annex K
-     */
   16,  11,  10,  16,  24,  40,  51,  61,
   12,  12,  14,  19,  26,  58,  60,  55,
   14,  13,  16,  24,  40,  57,  69,  56,
@@ -82,105 +78,8 @@ static const unsigned int std_luminance_quant_tbl[9][DCTSIZE2] = {
   24,  35,  55,  64,  81, 104, 113,  92,
   49,  64,  78,  87, 103, 121, 120, 101,
   72,  92,  95,  98, 112, 100, 103,  99
-  },
-  {
-    /* flat
-     */
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16
-  },
-  {
-    12, 17, 20, 21, 30, 34, 56, 63,
-    18, 20, 20, 26, 28, 51, 61, 55,
-    19, 20, 21, 26, 33, 58, 69, 55,
-    26, 26, 26, 30, 46, 87, 86, 66,
-    31, 33, 36, 40, 46, 96, 100, 73,
-    40, 35, 46, 62, 81, 100, 111, 91,
-    46, 66, 76, 86, 102, 121, 120, 101,
-    68, 90, 90, 96, 113, 102, 105, 103
-  },
-  {
-    /* From http://www.imagemagick.org/discourse-server/viewtopic.php?f=22&t=20333&p=98008#p98008
-     */
-    16,  16,  16,  18,  25,  37,  56,  85,
-    16,  17,  20,  27,  34,  40,  53,  75,
-    16,  20,  24,  31,  43,  62,  91,  135,
-    18,  27,  31,  40,  53,  74,  106, 156,
-    25,  34,  43,  53,  69,  94,  131, 189,
-    37,  40,  62,  74,  94,  124, 169, 238,
-    56,  53,  91,  106, 131, 169, 226, 311,
-    85,  75,  135, 156, 189, 238, 311, 418
-  },
-  {
-    9, 10, 12, 14, 27, 32, 51, 62,
-    11, 12, 14, 19, 27, 44, 59, 73,
-    12, 14, 18, 25, 42, 59, 79, 78,
-    17, 18, 25, 42, 61, 92, 87, 92,
-    23, 28, 42, 75, 79, 112, 112, 99,
-    40, 42, 59, 84, 88, 124, 132, 111,
-    42, 64, 78, 95, 105, 126, 125, 99,
-    70, 75, 100, 102, 116, 100, 107, 98
-  },
-  {
-    /* Relevance of human vision to JPEG-DCT compression (1992) Klein, Silverstein and Carney.
-     */
-    10, 12, 14, 19, 26, 38, 57, 86,
-    12, 18, 21, 28, 35, 41, 54, 76,
-    14, 21, 25, 32, 44, 63, 92, 136,
-    19, 28, 32, 41, 54, 75, 107, 157,
-    26, 35, 44, 54, 70, 95, 132, 190,
-    38, 41, 63, 75, 95, 125, 170, 239,
-    57, 54, 92, 107, 132, 170, 227, 312,
-    86, 76, 136, 157, 190, 239, 312, 419
-  },
-  {
-    /* DCTune perceptual optimization of compressed dental X-Rays (1997) Watson, Taylor, Borthwick
-     */
-    7, 8, 10, 14, 23, 44, 95, 241,
-    8, 8, 11, 15, 25, 47, 102, 255,
-    10, 11, 13, 19, 31, 58, 127, 255,
-    14, 15, 19, 27, 44, 83, 181, 255,
-    23, 25, 31, 44, 72, 136, 255, 255,
-    44, 47, 58, 83, 136, 255, 255, 255,
-    95, 102, 127, 181, 255, 255, 255, 255,
-    241, 255, 255, 255, 255, 255, 255, 255
-  },
-  {
-    /* A visual detection model for DCT coefficient quantization (12/9/93) Ahumada, Watson, Peterson
-     */
-    15, 11, 11, 12, 15, 19, 25, 32,
-    11, 13, 10, 10, 12, 15, 19, 24,
-    11, 10, 14, 14, 16, 18, 22, 27,
-    12, 10, 14, 18, 21, 24, 28, 33,
-    15, 12, 16, 21, 26, 31, 36, 42,
-    19, 15, 18, 24, 31, 38, 45, 53,
-    25, 19, 22, 28, 36, 45, 55, 65,
-    32, 24, 27, 33, 42, 53, 65, 77
-  },
-  {
-    /* An improved detection model for DCT coefficient quantization (1993) Peterson, Ahumada and Watson
-     */
-    14, 10, 11, 14, 19, 25, 34, 45,
-    10, 11, 11, 12, 15, 20, 26, 33,
-    11, 11, 15, 18, 21, 25, 31, 38,
-    14, 12, 18, 24, 28, 33, 39, 47,
-    19, 15, 21, 28, 36, 43, 51, 59,
-    25, 20, 25, 33, 43, 54, 64, 74,
-    34, 26, 31, 39, 51, 64, 77, 91,
-    45, 33, 38, 47, 59, 74, 91, 108
-  }
 };
-
+static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = {
-static const unsigned int std_chrominance_quant_tbl[9][DCTSIZE2] = {
-  {
-    /* JPEG Annex K
-     */
   17,  18,  24,  47,  99,  99,  99,  99,
   18,  21,  26,  66,  99,  99,  99,  99,
   24,  26,  56,  99,  99,  99,  99,  99,
@@ -189,105 +88,9 @@ static const unsigned int std_chrominance_quant_tbl[9][DCTSIZE2] = {
   99,  99,  99,  99,  99,  99,  99,  99,
   99,  99,  99,  99,  99,  99,  99,  99,
   99,  99,  99,  99,  99,  99,  99,  99
-  },
-  {
-    /* flat
-     */
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16
-  },
-  {
-    8, 12, 15, 15, 86, 96, 96, 98,
-    13, 13, 15, 26, 90, 96, 99, 98,
-    12, 15, 18, 96, 99, 99, 99, 99,
-    17, 16, 90, 96, 99, 99, 99, 99,
-    96, 96, 99, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99
-  },
-  {
-    /* From http://www.imagemagick.org/discourse-server/viewtopic.php?f=22&t=20333&p=98008#p98008
-     */
-    16,  16,  16,  18,  25,  37,  56,  85,
-    16,  17,  20,  27,  34,  40,  53,  75,
-    16,  20,  24,  31,  43,  62,  91,  135,
-    18,  27,  31,  40,  53,  74,  106, 156,
-    25,  34,  43,  53,  69,  94,  131, 189,
-    37,  40,  62,  74,  94,  124, 169, 238,
-    56,  53,  91,  106, 131, 169, 226, 311,
-    85,  75,  135, 156, 189, 238, 311, 418
-  },
-  {
-    9, 10, 17, 19, 62, 89, 91, 97,
-    12, 13, 18, 29, 84, 91, 88, 98,
-    14, 19, 29, 93, 95, 95, 98, 97,
-    20, 26, 84, 88, 95, 95, 98, 94,
-    26, 86, 91, 93, 97, 99, 98, 99,
-    99, 100, 98, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99,
-    97, 97, 99, 99, 99, 99, 97, 99
-  },
-  {
-    /* Relevance of human vision to JPEG-DCT compression (1992) Klein, Silverstein and Carney.
-     * Copied from luma
-     */
-    10, 12, 14, 19, 26, 38, 57, 86,
-    12, 18, 21, 28, 35, 41, 54, 76,
-    14, 21, 25, 32, 44, 63, 92, 136,
-    19, 28, 32, 41, 54, 75, 107, 157,
-    26, 35, 44, 54, 70, 95, 132, 190,
-    38, 41, 63, 75, 95, 125, 170, 239,
-    57, 54, 92, 107, 132, 170, 227, 312,
-    86, 76, 136, 157, 190, 239, 312, 419
-  },
-  {
-    /* DCTune perceptual optimization of compressed dental X-Rays (1997) Watson, Taylor, Borthwick
-     * Copied from luma
-     */
-    7, 8, 10, 14, 23, 44, 95, 241,
-    8, 8, 11, 15, 25, 47, 102, 255,
-    10, 11, 13, 19, 31, 58, 127, 255,
-    14, 15, 19, 27, 44, 83, 181, 255,
-    23, 25, 31, 44, 72, 136, 255, 255,
-    44, 47, 58, 83, 136, 255, 255, 255,
-    95, 102, 127, 181, 255, 255, 255, 255,
-    241, 255, 255, 255, 255, 255, 255, 255
-  },
-  {
-    /* A visual detection model for DCT coefficient quantization (12/9/93) Ahumada, Watson, Peterson
-     * Copied from luma
-     */
-    15, 11, 11, 12, 15, 19, 25, 32,
-    11, 13, 10, 10, 12, 15, 19, 24,
-    11, 10, 14, 14, 16, 18, 22, 27,
-    12, 10, 14, 18, 21, 24, 28, 33,
-    15, 12, 16, 21, 26, 31, 36, 42,
-    19, 15, 18, 24, 31, 38, 45, 53,
-    25, 19, 22, 28, 36, 45, 55, 65,
-    32, 24, 27, 33, 42, 53, 65, 77
-  },
-  {
-    /* An improved detection model for DCT coefficient quantization (1993) Peterson, Ahumada and Watson
-     * Copied from luma
-     */
-    14, 10, 11, 14, 19, 25, 34, 45,
-    10, 11, 11, 12, 15, 20, 26, 33,
-    11, 11, 15, 18, 21, 25, 31, 38,
-    14, 12, 18, 24, 28, 33, 39, 47,
-    19, 15, 21, 28, 36, 43, 51, 59,
-    25, 20, 25, 33, 43, 54, 64, 74,
-    34, 26, 31, 39, 51, 64, 77, 91,
-    45, 33, 38, 47, 59, 74, 91, 108
-  }
 };
 
+
 #if JPEG_LIB_VERSION >= 70
 GLOBAL(void)
 jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline)
@@ -297,9 +100,9 @@ jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline)
  */
 {
   /* Set up two quantization tables using the specified scaling */
-  jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl[cinfo->master->quant_tbl_master_idx],
+  jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl,
                        cinfo->q_scale_factor[0], force_baseline);
-  jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl[cinfo->master->quant_tbl_master_idx],
+  jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl,
                        cinfo->q_scale_factor[1], force_baseline);
 }
 #endif
@@ -315,29 +118,23 @@ jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor,
  */
 {
   /* Set up two quantization tables using the specified scaling */
-  jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl[cinfo->master->quant_tbl_master_idx],
+  jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl,
                        scale_factor, force_baseline);
-  jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl[cinfo->master->quant_tbl_master_idx],
+  jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl,
                        scale_factor, force_baseline);
 }
 
 
 GLOBAL(int)
 jpeg_quality_scaling (int quality)
-{
-  return jpeg_float_quality_scaling(quality);
-}
-
-GLOBAL(float)
-jpeg_float_quality_scaling(float quality)
 /* Convert a user-specified quality rating to a percentage scaling factor
  * for an underlying quantization table, using our recommended scaling curve.
  * The input 'quality' factor should be 0 (terrible) to 100 (very good).
  */
 {
   /* Safety limit on quality factor.  Convert 0 to 1 to avoid zero divide. */
-  if (quality <= 0.f) quality = 1.f;
+  if (quality <= 0) quality = 1;
-  if (quality > 100.f) quality = 100.f;
+  if (quality > 100) quality = 100;
 
   /* The basic table is used as-is (scaling 100) for a quality of 50.
    * Qualities 50..100 are converted to scaling percentage 200 - 2*Q;
@@ -345,10 +142,10 @@ jpeg_float_quality_scaling(float quality)
    * to make all the table entries 1 (hence, minimum quantization loss).
    * Qualities 1..50 are converted to scaling percentage 5000/Q.
    */
-  if (quality < 50.f)
+  if (quality < 50)
-    quality = 5000.f / quality;
+    quality = 5000 / quality;
   else
-    quality = 200.f - quality*2.f;
+    quality = 200 - quality*2;
 
   return quality;
 }
@@ -427,18 +224,8 @@ jpeg_set_defaults (j_compress_ptr cinfo)
   /* Use Huffman coding, not arithmetic coding, by default */
   cinfo->arith_code = FALSE;
 
-#ifdef ENTROPY_OPT_SUPPORTED
-  if (cinfo->master->compress_profile == JCP_MAX_COMPRESSION)
-    /* By default, do extra passes to optimize entropy coding */
-    cinfo->optimize_coding = TRUE;
-  else
   /* By default, don't do extra passes to optimize entropy coding */
   cinfo->optimize_coding = FALSE;
-#else
-  /* By default, don't do extra passes to optimize entropy coding */
-  cinfo->optimize_coding = FALSE;
-#endif
-  
   /* The standard Huffman tables are only valid for 8-bit data precision.
    * If the precision is higher, force optimization on so that usable
    * tables will be computed.  This test can be removed if default tables
@@ -455,9 +242,6 @@ jpeg_set_defaults (j_compress_ptr cinfo)
   cinfo->do_fancy_downsampling = TRUE;
 #endif
 
-  cinfo->master->overshoot_deringing =
-    cinfo->master->compress_profile == JCP_MAX_COMPRESSION;
-
   /* No input smoothing */
   cinfo->smoothing_factor = 0;
 
@@ -486,31 +270,6 @@ jpeg_set_defaults (j_compress_ptr cinfo)
   /* Choose JPEG colorspace based on input space, set defaults accordingly */
 
   jpeg_default_colorspace(cinfo);
-  
-  cinfo->master->dc_scan_opt_mode = 1;
-  
-#ifdef C_PROGRESSIVE_SUPPORTED
-  if (cinfo->master->compress_profile == JCP_MAX_COMPRESSION) {
-    cinfo->master->optimize_scans = TRUE;
-    jpeg_simple_progression(cinfo);
-  } else
-    cinfo->master->optimize_scans = FALSE;
-#endif
-  
-  cinfo->master->trellis_quant =
-    cinfo->master->compress_profile == JCP_MAX_COMPRESSION;
-  cinfo->master->lambda_log_scale1 = 14.75;
-  cinfo->master->lambda_log_scale2 = 16.5;
-  cinfo->master->quant_tbl_master_idx =
-    cinfo->master->compress_profile == JCP_MAX_COMPRESSION ? 3 : 0;
-  
-  cinfo->master->use_lambda_weight_tbl = TRUE;
-  cinfo->master->use_scans_in_trellis = FALSE;
-  cinfo->master->trellis_freq_split = 8;
-  cinfo->master->trellis_num_loops = 1;
-  cinfo->master->trellis_q_opt = FALSE;
-  cinfo->master->trellis_quant_dc = TRUE;
-  cinfo->master->trellis_delta_dc_weight = 0.0;
 }
 
 
@@ -659,22 +418,6 @@ fill_a_scan (jpeg_scan_info *scanptr, int ci,
   return scanptr;
 }
 
-LOCAL(jpeg_scan_info *)
-fill_a_scan_pair (jpeg_scan_info * scanptr, int ci,
-                  int Ss, int Se, int Ah, int Al)
-/* Support routine: generate one scan for pair of components */
-{
-  scanptr->comps_in_scan = 2;
-  scanptr->component_index[0] = ci;
-  scanptr->component_index[1] = ci + 1;
-  scanptr->Ss = Ss;
-  scanptr->Se = Se;
-  scanptr->Ah = Ah;
-  scanptr->Al = Al;
-  scanptr++;
-  return scanptr;
-}
-
 LOCAL(jpeg_scan_info *)
 fill_scans (jpeg_scan_info *scanptr, int ncomps,
             int Ss, int Se, int Ah, int Al)
@@ -717,132 +460,6 @@ fill_dc_scans (jpeg_scan_info *scanptr, int ncomps, int Ah, int Al)
 }
 
 
-/*
- * List of scans to be tested
- * cinfo->num_components and cinfo->jpeg_color_space must be correct.
- */
-
-LOCAL(boolean)
-jpeg_search_progression (j_compress_ptr cinfo)
-{
-  int ncomps = cinfo->num_components;
-  int nscans;
-  jpeg_scan_info * scanptr;
-  int Al;
-  int frequency_split[] = { 2, 8, 5, 12, 18 };
-  int i;
-  
-  /* Safety check to ensure start_compress not called yet. */
-  if (cinfo->global_state != CSTATE_START)
-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
-  
-  /* Figure space needed for script.  Calculation must match code below! */
-  if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
-    /* Custom script for YCbCr color images. */
-    nscans = 64;
-  } else if (ncomps == 1) {
-    nscans = 23;
-  } else {
-    cinfo->master->num_scans_luma = 0;
-    return FALSE;
-  }
-  
-  /* Allocate space for script.
-   * We need to put it in the permanent pool in case the application performs
-   * multiple compressions without changing the settings.  To avoid a memory
-   * leak if jpeg_simple_progression is called repeatedly for the same JPEG
-   * object, we try to re-use previously allocated space, and we allocate
-   * enough space to handle YCbCr even if initially asked for grayscale.
-   */
-  if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) {
-    cinfo->script_space_size = MAX(nscans, 64);
-    cinfo->script_space = (jpeg_scan_info *)
-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
-                                cinfo->script_space_size * sizeof(jpeg_scan_info));
-  }
-  scanptr = cinfo->script_space;
-  cinfo->scan_info = scanptr;
-  cinfo->num_scans = nscans;
-  
-  cinfo->master->Al_max_luma = 3;
-  cinfo->master->num_scans_luma_dc = 1;
-  cinfo->master->num_frequency_splits = 5;
-  cinfo->master->num_scans_luma =
-    cinfo->master->num_scans_luma_dc + (3 * cinfo->master->Al_max_luma + 2) +
-    (2 * cinfo->master->num_frequency_splits + 1);
-  
-  /* 23 scans for luma */
-  /* 1 scan for DC */
-  /* 11 scans to determine successive approximation */
-  /* 11 scans to determine frequency approximation */
-  /* after 12 scans need to update following 11 */
-  /* after 23 scans need to determine which to keep */
-  /* last 4 done conditionally */
-  
-  /* luma DC by itself */
-  if (cinfo->master->dc_scan_opt_mode == 0)
-    scanptr = fill_dc_scans(scanptr, ncomps, 0, 0);
-  else
-    scanptr = fill_dc_scans(scanptr, 1, 0, 0);
-  
-  scanptr = fill_a_scan(scanptr, 0, 1, 8, 0, 0);
-  scanptr = fill_a_scan(scanptr, 0, 9, 63, 0, 0);
-  
-  for (Al = 0; Al < cinfo->master->Al_max_luma; Al++) {
-    scanptr = fill_a_scan(scanptr, 0, 1, 63, Al+1, Al);
-    scanptr = fill_a_scan(scanptr, 0, 1, 8, 0, Al+1);
-    scanptr = fill_a_scan(scanptr, 0, 9, 63, 0, Al+1);
-  }
-  
-  scanptr = fill_a_scan(scanptr, 0, 1, 63, 0, 0);
-  
-  for (i = 0; i < cinfo->master->num_frequency_splits; i++) {
-    scanptr = fill_a_scan(scanptr, 0, 1, frequency_split[i], 0, 0);
-    scanptr = fill_a_scan(scanptr, 0, frequency_split[i]+1, 63, 0, 0);
-  }
-  
-  if (ncomps == 1) {
-    cinfo->master->Al_max_chroma = 0;
-    cinfo->master->num_scans_chroma_dc = 0;
-  } else {
-    cinfo->master->Al_max_chroma = 2;
-    cinfo->master->num_scans_chroma_dc = 3;
-    /* 41 scans for chroma */
-    
-    /* chroma DC combined */
-    scanptr = fill_a_scan_pair(scanptr, 1, 0, 0, 0, 0);
-    /* chroma DC separate */
-    scanptr = fill_a_scan(scanptr, 1, 0, 0, 0, 0);
-    scanptr = fill_a_scan(scanptr, 2, 0, 0, 0, 0);
-    
-    scanptr = fill_a_scan(scanptr, 1, 1, 8, 0, 0);
-    scanptr = fill_a_scan(scanptr, 1, 9, 63, 0, 0);
-    scanptr = fill_a_scan(scanptr, 2, 1, 8, 0, 0);
-    scanptr = fill_a_scan(scanptr, 2, 9, 63, 0, 0);
-
-    for (Al = 0; Al < cinfo->master->Al_max_chroma; Al++) {
-      scanptr = fill_a_scan(scanptr, 1, 1, 63, Al+1, Al);
-      scanptr = fill_a_scan(scanptr, 2, 1, 63, Al+1, Al);
-      scanptr = fill_a_scan(scanptr, 1, 1, 8, 0, Al+1);
-      scanptr = fill_a_scan(scanptr, 1, 9, 63, 0, Al+1);
-      scanptr = fill_a_scan(scanptr, 2, 1, 8, 0, Al+1);
-      scanptr = fill_a_scan(scanptr, 2, 9, 63, 0, Al+1);
-    }
-    
-    scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 0);
-    scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 0);
-
-    for (i = 0; i < cinfo->master->num_frequency_splits; i++) {
-      scanptr = fill_a_scan(scanptr, 1, 1, frequency_split[i], 0, 0);
-      scanptr = fill_a_scan(scanptr, 1, frequency_split[i]+1, 63, 0, 0);
-      scanptr = fill_a_scan(scanptr, 2, 1, frequency_split[i], 0, 0);
-      scanptr = fill_a_scan(scanptr, 2, frequency_split[i]+1, 63, 0, 0);
-    }
-  }
-  
-  return TRUE;
-}
-
 /*
  * Create a recommended progressive-JPEG script.
  * cinfo->num_components and cinfo->jpeg_color_space must be correct.
@@ -851,44 +468,25 @@ jpeg_search_progression (j_compress_ptr cinfo)
 GLOBAL(void)
 jpeg_simple_progression (j_compress_ptr cinfo)
 {
-  int ncomps;
+  int ncomps = cinfo->num_components;
   int nscans;
   jpeg_scan_info *scanptr;
 
-  if (cinfo->master->optimize_scans) {
-    if (jpeg_search_progression(cinfo) == TRUE)
-      return;
-  }
-
   /* Safety check to ensure start_compress not called yet. */
   if (cinfo->global_state != CSTATE_START)
     ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
 
   /* Figure space needed for script.  Calculation must match code below! */
-  ncomps = cinfo->num_components;
   if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
     /* Custom script for YCbCr color images. */
-    if (cinfo->master->dc_scan_opt_mode == 0) {
+    nscans = 10;
-      nscans = 8;  /* 1 DC scan for all components */
-    } else if (cinfo->master->dc_scan_opt_mode == 1) {
-      nscans = 10; /* 1 DC scan for each component */
-    } else {
-      nscans = 9;  /* 1 DC scan for luminance and 1 DC scan for chroma */
-    }
   } else {
     /* All-purpose script for other color spaces. */
-    if (cinfo->master->compress_profile == JCP_MAX_COMPRESSION) {
     if (ncomps > MAX_COMPS_IN_SCAN)
-        nscans = 5 * ncomps;      /* 2 DC + 4 AC scans per component */
-      else
-        nscans = 1 + 4 * ncomps;  /* 2 DC scans; 4 AC scans per component */
-    } else {
-      if (ncomps > MAX_COMPS_IN_SCAN)
       nscans = 6 * ncomps;      /* 2 DC + 4 AC scans per component */
     else
       nscans = 2 + 4 * ncomps;  /* 2 DC scans; 4 AC scans per component */
   }
-  }
 
   /* Allocate space for script.
    * We need to put it in the permanent pool in case the application performs
@@ -909,36 +507,7 @@ jpeg_simple_progression (j_compress_ptr cinfo)
 
   if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) {
     /* Custom script for YCbCr color images. */
-    if (cinfo->master->compress_profile == JCP_MAX_COMPRESSION) {
-      /* scan defined in jpeg_scan_rgb.txt in jpgcrush */
     /* Initial DC scan */
-      if (cinfo->master->dc_scan_opt_mode == 0) {
-        /* 1 DC scan for all components */
-        scanptr = fill_dc_scans(scanptr, ncomps, 0, 0);
-      } else if (cinfo->master->dc_scan_opt_mode == 1) {
-        /* 1 DC scan for each component */
-        scanptr = fill_a_scan(scanptr, 0, 0, 0, 0, 0);
-        scanptr = fill_a_scan(scanptr, 1, 0, 0, 0, 0);
-        scanptr = fill_a_scan(scanptr, 2, 0, 0, 0, 0);
-      } else {
-        /* 1 DC scan for luminance and 1 DC scan for chroma */
-        scanptr = fill_dc_scans(scanptr, 1, 0, 0);
-        scanptr = fill_a_scan_pair(scanptr, 1, 0, 0, 0, 0);
-      }
-      /* Low frequency AC scans */
-      scanptr = fill_a_scan(scanptr, 0, 1, 8, 0, 2);
-      scanptr = fill_a_scan(scanptr, 1, 1, 8, 0, 0);
-      scanptr = fill_a_scan(scanptr, 2, 1, 8, 0, 0);
-      /* Complete spectral selection for luma AC */
-      scanptr = fill_a_scan(scanptr, 0, 9, 63, 0, 2);
-      /* Finish luma AC successive approximation */
-      scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1);
-      scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0);
-      /* Complete spectral selection for chroma AC */
-      scanptr = fill_a_scan(scanptr, 1, 9, 63, 0, 0);
-      scanptr = fill_a_scan(scanptr, 2, 9, 63, 0, 0);
-    } else {
-      /* Initial DC scan */
     scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
     /* Initial AC scan: get some luma data out in a hurry */
     scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2);
@@ -956,22 +525,9 @@ jpeg_simple_progression (j_compress_ptr cinfo)
     scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0);
     /* Luma bottom bit comes last since it's usually largest scan */
     scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0);
-    }
   } else {
     /* All-purpose script for other color spaces. */
-    if (cinfo->master->compress_profile == JCP_MAX_COMPRESSION) {
-      /* scan defined in jpeg_scan_bw.txt in jpgcrush */
-      /* DC component, no successive approximation */
-      scanptr = fill_dc_scans(scanptr, ncomps, 0, 0);
     /* Successive approximation first pass */
-      scanptr = fill_scans(scanptr, ncomps, 1, 8, 0, 2);
-      scanptr = fill_scans(scanptr, ncomps, 9, 63, 0, 2);
-      /* Successive approximation second pass */
-      scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1);
-      /* Successive approximation final pass */
-      scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0);
-    } else {
-      /* Successive approximation first pass */
     scanptr = fill_dc_scans(scanptr, ncomps, 0, 1);
     scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2);
     scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2);
@@ -982,6 +538,5 @@ jpeg_simple_progression (j_compress_ptr cinfo)
     scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0);
   }
 }
-}
 
 #endif /* C_PROGRESSIVE_SUPPORTED */

jcphuff.c

@@ -3,11 +3,10 @@
  *
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1995-1997, Thomas G. Lane.
- * It was modified by The libjpeg-turbo Project to include only code relevant
+ * libjpeg-turbo Modifications:
- * to libjpeg-turbo.
+ * Copyright (C) 2015, D. R. Commander.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains Huffman entropy encoding routines for progressive JPEG.
  *
@@ -171,14 +170,6 @@ start_pass_phuff (j_compress_ptr cinfo, boolean gather_statistics)
           (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
                                       257 * sizeof(long));
       MEMZERO(entropy->count_ptrs[tbl], 257 * sizeof(long));
-      if (cinfo->master->trellis_passes) {
-        /* When generating tables for trellis passes, make sure that all */
-        /* codewords have an assigned length */
-        int i, j;
-        for (i = 0; i < 16; i++)
-          for (j = 0; j < 12; j++)
-            entropy->count_ptrs[tbl][16 * i + j] = 1;
-      }
     } else {
       /* Compute derived values for Huffman table */
       /* We may do this more than once for a table, but it's not expensive */
@@ -480,8 +471,6 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
   int Se = cinfo->Se;
   int Al = cinfo->Al;
   JBLOCKROW block;
-  int deadzone = (1 << Al) - 1;
-  int sign;
 
   entropy->next_output_byte = cinfo->dest->next_output_byte;
   entropy->free_in_buffer = cinfo->dest->free_in_buffer;
@@ -499,24 +488,29 @@ encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data)
   r = 0;                        /* r = run length of zeros */
 
   for (k = cinfo->Ss; k <= Se; k++) {
-    temp = (*block)[jpeg_natural_order[k]];
+    if ((temp = (*block)[jpeg_natural_order[k]]) == 0) {
-    if ((unsigned)(temp + deadzone) <= 2*deadzone) {
       r++;
       continue;
     }
-
     /* We must apply the point transform by Al.  For AC coefficients this
-     * is an integer division with rounding towards 0.  The code is
+     * is an integer division with rounding towards 0.  To do this portably
+     * in C, we shift after obtaining the absolute value; so the code is
      * interwoven with finding the abs value (temp) and output bits (temp2).
      */
-#ifdef RIGHT_SHIFT_IS_UNSIGNED
+    if (temp < 0) {
-    sign = (temp < 0) ? ~0 : 0;
+      temp = -temp;             /* temp is abs value of input */
-#else
+      temp >>= Al;              /* apply the point transform */
-    sign = temp >> (8*sizeof(temp)-1);
+      /* For a negative coef, want temp2 = bitwise complement of abs(coef) */
-#endif
+      temp2 = ~temp;
-    temp += sign;
+    } else {
-    temp = (temp ^ sign) >> Al;
+      temp >>= Al;              /* apply the point transform */
-    temp2 = temp ^ sign;
+      temp2 = temp;
+    }
+    /* Watch out for case that nonzero coef is zero after point transform */
+    if (temp == 0) {
+      r++;
+      continue;
+    }
 
     /* Emit any pending EOBRUN */
     if (entropy->EOBRUN > 0)

jctrans.c

@@ -6,9 +6,8 @@
  * Modified 2000-2009 by Guido Vollbeding.
  * It was modified by The libjpeg-turbo Project to include only code relevant
  * to libjpeg-turbo.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains library routines for transcoding compression,
  * that is, writing raw DCT coefficient arrays to an output JPEG file.
@@ -42,10 +41,6 @@ LOCAL(void) transencode_coef_controller
 GLOBAL(void)
 jpeg_write_coefficients (j_compress_ptr cinfo, jvirt_barray_ptr *coef_arrays)
 {
-  /* setting up scan optimisation pattern failed, disable scan optimisation */
-  if (cinfo->master->num_scans_luma == 0)
-    cinfo->master->optimize_scans = FALSE;
-  
   if (cinfo->global_state != CSTATE_START)
     ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
   /* Mark all tables to be written */
@@ -69,7 +64,7 @@ jpeg_write_coefficients (j_compress_ptr cinfo, jvirt_barray_ptr *coef_arrays)
  */
 
 GLOBAL(void)
-jpeg_copy_critical_parameters (const j_decompress_ptr srcinfo,
+jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
                                j_compress_ptr dstinfo)
 {
   JQUANT_TBL **qtblptr;
@@ -93,8 +88,6 @@ jpeg_copy_critical_parameters (const j_decompress_ptr srcinfo,
 #endif
   /* Initialize all parameters to default values */
   jpeg_set_defaults(dstinfo);
-  dstinfo->master->trellis_quant = FALSE;
-  
   /* jpeg_set_defaults may choose wrong colorspace, eg YCbCr if input is RGB.
    * Fix it to get the right header markers for the image colorspace.
    */

jdapimin.c

@@ -343,7 +343,7 @@ jpeg_consume_input (j_decompress_ptr cinfo)
  */
 
 GLOBAL(boolean)
-jpeg_input_complete (const j_decompress_ptr cinfo)
+jpeg_input_complete (j_decompress_ptr cinfo)
 {
   /* Check for valid jpeg object */
   if (cinfo->global_state < DSTATE_START ||
@@ -358,7 +358,7 @@ jpeg_input_complete (const j_decompress_ptr cinfo)
  */
 
 GLOBAL(boolean)
-jpeg_has_multiple_scans (const j_decompress_ptr cinfo)
+jpeg_has_multiple_scans (j_decompress_ptr cinfo)
 {
   /* Only valid after jpeg_read_header completes */
   if (cinfo->global_state < DSTATE_READY ||

jdarith.c

@@ -4,7 +4,7 @@
  * This file was part of the Independent JPEG Group's software:
  * Developed 1997-2015 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2015, D. R. Commander.
+ * Copyright (C) 2015-2016, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -382,7 +382,7 @@ decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
       if (arith_decode(cinfo, st)) v |= m;
     v += 1; if (sign) v = -v;
     /* Scale and output coefficient in natural (dezigzagged) order */
-    (*block)[jpeg_natural_order[k]] = (JCOEF) (v << cinfo->Al);
+    (*block)[jpeg_natural_order[k]] = (JCOEF) ((unsigned)v << cinfo->Al);
   }
 
   return TRUE;

jdatadst.c

@@ -208,9 +208,9 @@ jpeg_stdio_dest (j_compress_ptr cinfo, FILE *outfile)
 {
   my_dest_ptr dest;
 
-    /* The destination object is made permanent so that multiple JPEG images
+  /* The destination object is made permanent so that multiple JPEG images
-     * can be written to the same file without re-executing jpeg_stdio_dest.
+   * can be written to the same file without re-executing jpeg_stdio_dest.
-     */
+   */
   if (cinfo->dest == NULL) {    /* first time for this JPEG object? */
     cinfo->dest = (struct jpeg_destination_mgr *)
       (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
@@ -249,8 +249,8 @@ jpeg_stdio_dest (j_compress_ptr cinfo, FILE *outfile)
  */
 
 GLOBAL(void)
-jpeg_mem_dest_internal (j_compress_ptr cinfo,
+jpeg_mem_dest (j_compress_ptr cinfo,
-               unsigned char **outbuffer, unsigned long *outsize, int pool_id)
+               unsigned char **outbuffer, unsigned long *outsize)
 {
   my_mem_dest_ptr dest;
 
@@ -262,7 +262,7 @@ jpeg_mem_dest_internal (j_compress_ptr cinfo,
    */
   if (cinfo->dest == NULL) {    /* first time for this JPEG object? */
     cinfo->dest = (struct jpeg_destination_mgr *)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, pool_id,
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
                                   sizeof(my_mem_destination_mgr));
   } else if (cinfo->dest->init_destination != init_mem_destination) {
     /* It is unsafe to reuse the existing destination manager unless it was
@@ -290,15 +290,4 @@ jpeg_mem_dest_internal (j_compress_ptr cinfo,
   dest->pub.next_output_byte = dest->buffer = *outbuffer;
   dest->pub.free_in_buffer = dest->bufsize = *outsize;
 }
-
-GLOBAL(void)
-jpeg_mem_dest (j_compress_ptr cinfo,
-               unsigned char **outbuffer, unsigned long *outsize)
-{
-  /* The destination object is made permanent so that multiple JPEG images
-   * can be written to the same file without re-executing jpeg_stdio_dest.
-   */
-  jpeg_mem_dest_internal(cinfo, outbuffer, outsize, JPOOL_PERMANENT);
-}
-
 #endif

jdhuff.c

@@ -109,9 +109,9 @@ start_pass_huff_decoder (j_decompress_ptr cinfo)
     actbl = compptr->ac_tbl_no;
     /* Compute derived values for Huffman tables */
     /* We may do this more than once for a table, but it's not expensive */
-    pdtbl = entropy->dc_derived_tbls + dctbl;
+    pdtbl = (d_derived_tbl **)(entropy->dc_derived_tbls) + dctbl;
     jpeg_make_d_derived_tbl(cinfo, TRUE, dctbl, pdtbl);
-    pdtbl = entropy->ac_derived_tbls + actbl;
+    pdtbl = (d_derived_tbl **)(entropy->ac_derived_tbls) + actbl;
     jpeg_make_d_derived_tbl(cinfo, FALSE, actbl, pdtbl);
     /* Initialize DC predictions to 0 */
     entropy->saved.last_dc_val[ci] = 0;

jdmaster.c

@@ -22,6 +22,7 @@
 #include "jpeglib.h"
 #include "jpegcomp.h"
 #include "jdmaster.h"
+#include "jsimd.h"
 
 
 /*
@@ -69,6 +70,17 @@ use_merged_upsample (j_decompress_ptr cinfo)
       cinfo->comp_info[1]._DCT_scaled_size != cinfo->_min_DCT_scaled_size ||
       cinfo->comp_info[2]._DCT_scaled_size != cinfo->_min_DCT_scaled_size)
     return FALSE;
+#ifdef WITH_SIMD
+  /* If YCbCr-to-RGB color conversion is SIMD-accelerated but merged upsampling
+     isn't, then disabling merged upsampling is likely to be faster when
+     decompressing YCbCr JPEG images. */
+  if (!jsimd_can_h2v2_merged_upsample() && !jsimd_can_h2v1_merged_upsample() &&
+      jsimd_can_ycc_rgb() && cinfo->jpeg_color_space == JCS_YCbCr &&
+      (cinfo->out_color_space == JCS_RGB ||
+       (cinfo->out_color_space >= JCS_EXT_RGB &&
+        cinfo->out_color_space <= JCS_EXT_ARGB)))
+    return FALSE;
+#endif
   /* ??? also need to test for upsample-time rescaling, when & if supported */
   return TRUE;                  /* by golly, it'll work... */
 #else

jdphuff.c

@@ -4,7 +4,7 @@
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1995-1997, Thomas G. Lane.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2015, D. R. Commander.
+ * Copyright (C) 2015-2016, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -170,12 +170,12 @@ start_pass_phuff_decoder (j_decompress_ptr cinfo)
     if (is_DC_band) {
       if (cinfo->Ah == 0) {     /* DC refinement needs no table */
         tbl = compptr->dc_tbl_no;
-        pdtbl = entropy->derived_tbls + tbl;
+        pdtbl = (d_derived_tbl **)(entropy->derived_tbls) + tbl;
         jpeg_make_d_derived_tbl(cinfo, TRUE, tbl, pdtbl);
       }
     } else {
       tbl = compptr->ac_tbl_no;
-      pdtbl = entropy->derived_tbls + tbl;
+      pdtbl = (d_derived_tbl **)(entropy->derived_tbls) + tbl;
       jpeg_make_d_derived_tbl(cinfo, FALSE, tbl, pdtbl);
       /* remember the single active table */
       entropy->ac_derived_tbl = entropy->derived_tbls[tbl];

jdsample.c

@@ -303,6 +303,48 @@ h2v1_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr,
 }
 
 
+/*
+ * Fancy processing for 1:1 horizontal and 2:1 vertical (4:4:0 subsampling).
+ *
+ * This is a less common case, but it can be encountered when losslessly
+ * rotating/transposing a JPEG file that uses 4:2:2 chroma subsampling.
+ */
+
+METHODDEF(void)
+h1v2_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+                     JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+{
+  JSAMPARRAY output_data = *output_data_ptr;
+  JSAMPROW inptr0, inptr1, outptr;
+#if BITS_IN_JSAMPLE == 8
+  int thiscolsum;
+#else
+  JLONG thiscolsum;
+#endif
+  JDIMENSION colctr;
+  int inrow, outrow, v;
+
+  inrow = outrow = 0;
+  while (outrow < cinfo->max_v_samp_factor) {
+    for (v = 0; v < 2; v++) {
+      /* inptr0 points to nearest input row, inptr1 points to next nearest */
+      inptr0 = input_data[inrow];
+      if (v == 0)               /* next nearest is row above */
+        inptr1 = input_data[inrow-1];
+      else                      /* next nearest is row below */
+        inptr1 = input_data[inrow+1];
+      outptr = output_data[outrow++];
+
+      for(colctr = 0; colctr < compptr->downsampled_width; colctr++) {
+        thiscolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);
+        *outptr++ = (JSAMPLE) ((thiscolsum + 1) >> 2);
+      }
+    }
+    inrow++;
+  }
+}
+
+
 /*
  * Fancy processing for the common case of 2:1 horizontal and 2:1 vertical.
  * Again a triangle filter; see comments for h2v1 case, above.
@@ -431,6 +473,11 @@ jinit_upsampler (j_decompress_ptr cinfo)
         else
           upsample->methods[ci] = h2v1_upsample;
       }
+    } else if (h_in_group == h_out_group &&
+               v_in_group * 2 == v_out_group && do_fancy) {
+      /* Non-fancy upsampling is handled by the generic method */
+      upsample->methods[ci] = h1v2_fancy_upsample;
+      upsample->pub.need_context_rows = TRUE;
     } else if (h_in_group * 2 == h_out_group &&
                v_in_group * 2 == v_out_group) {
       /* Special cases for 2h2v upsampling */

jerror.h

@@ -208,10 +208,6 @@ JMESSAGE(JERR_NO_ARITH_TABLE, "Arithmetic table 0x%02x was not defined")
 JMESSAGE(JWRN_ARITH_BAD_CODE, "Corrupt JPEG data: bad arithmetic code")
 #endif
 #endif
-JMESSAGE(JERR_BAD_PARAM, "Bogus parameter")
-JMESSAGE(JERR_BAD_PARAM_VALUE, "Bogus parameter value")
-
-JMESSAGE(JERR_UNSUPPORTED_SUSPEND, "I/O suspension not supported in scan optimization")  
 
 #ifdef JMAKE_ENUM_LIST
 

jmemmgr.c

@@ -32,6 +32,7 @@
 #include "jinclude.h"
 #include "jpeglib.h"
 #include "jmemsys.h"            /* import the system-dependent declarations */
+#include <stdint.h>
 
 #ifndef NO_GETENV
 #ifndef HAVE_STDLIB_H           /* <stdlib.h> should declare getenv() */
@@ -650,18 +651,26 @@ realize_virt_arrays (j_common_ptr cinfo)
   maximum_space = 0;
   for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
     if (sptr->mem_buffer == NULL) { /* if not realized yet */
+      size_t new_space = (long) sptr->rows_in_array *
+                         (long) sptr->samplesperrow * sizeof(JSAMPLE);
+
       space_per_minheight += (long) sptr->maxaccess *
                              (long) sptr->samplesperrow * sizeof(JSAMPLE);
-      maximum_space += (long) sptr->rows_in_array *
+      if (SIZE_MAX - maximum_space < new_space)
-                       (long) sptr->samplesperrow * sizeof(JSAMPLE);
+        out_of_memory(cinfo, 10);
+      maximum_space += new_space;
     }
   }
   for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
     if (bptr->mem_buffer == NULL) { /* if not realized yet */
+      size_t new_space = (long) bptr->rows_in_array *
+                         (long) bptr->blocksperrow * sizeof(JBLOCK);
+
       space_per_minheight += (long) bptr->maxaccess *
                              (long) bptr->blocksperrow * sizeof(JBLOCK);
-      maximum_space += (long) bptr->rows_in_array *
+      if (SIZE_MAX - maximum_space < new_space)
-                       (long) bptr->blocksperrow * sizeof(JBLOCK);
+        out_of_memory(cinfo, 11);
+      maximum_space += new_space;
     }
   }
 

jpegint.h

@@ -7,8 +7,6 @@
  * libjpeg-turbo Modifications:
  * Copyright (C) 2015-2016, D. R. Commander.
  * Copyright (C) 2015, Google, Inc.
- * mozjpeg Modifications:
- * Copyright (C) 2014, Mozilla Corporation.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -25,8 +23,7 @@ typedef enum {            /* Operating modes for buffer controllers */
   /* Remaining modes require a full-image buffer to have been created */
   JBUF_SAVE_SOURCE,       /* Run source subobject only, save output */
   JBUF_CRANK_DEST,        /* Run dest subobject only, using saved data */
-  JBUF_SAVE_AND_PASS,     /* Run both subobjects, save output */
+  JBUF_SAVE_AND_PASS      /* Run both subobjects, save output */
-  JBUF_REQUANT            /* Requantize */
 } J_BUF_MODE;
 
 /* Values of global_state field (jdapi.c has some dependencies on ordering!) */
@@ -70,67 +67,8 @@ struct jpeg_comp_master {
   /* State variables made visible to other modules */
   boolean call_pass_startup;    /* True if pass_startup must be called */
   boolean is_last_pass;         /* True during last pass */
-
-  /* Extension parameters */
-  boolean optimize_scans; /* TRUE=optimize progressive coding scans */
-  boolean trellis_quant; /* TRUE=use trellis quantization */
-  boolean trellis_quant_dc; /* TRUE=use trellis quant for DC coefficient */
-  boolean trellis_eob_opt; /* TRUE=optimize for sequences of EOB */
-  boolean use_lambda_weight_tbl; /* TRUE=use lambda weighting table */
-  boolean use_scans_in_trellis; /* TRUE=use scans in trellis optimization */
-  boolean trellis_passes; /* TRUE=currently doing trellis-related passes [not exposed] */
-  boolean trellis_q_opt; /* TRUE=optimize quant table in trellis loop */
-  boolean overshoot_deringing; /* TRUE=preprocess input to reduce ringing of edges on white background */
-
-  double norm_src[NUM_QUANT_TBLS][DCTSIZE2];
-  double norm_coef[NUM_QUANT_TBLS][DCTSIZE2];
-
-  int compress_profile; /* compression profile */
-  int dc_scan_opt_mode; /* DC scan optimization mode */
-  int quant_tbl_master_idx; /* Quantization table master index */
-  int trellis_freq_split; /* splitting point for frequency in trellis quantization */
-  int trellis_num_loops; /* number of trellis loops */
-
-  int num_scans_luma; /* # of entries in scan_info array pertaining to luma (used when optimize_scans is TRUE */
-  int num_scans_luma_dc;
-  int num_scans_chroma_dc;
-  int num_frequency_splits;
-
-  int Al_max_luma; /* maximum value of Al tested when optimizing scans (luma) */
-  int Al_max_chroma; /* maximum value of Al tested when optimizing scans (chroma) */
-
-  float lambda_log_scale1;
-  float lambda_log_scale2;
-  
-  float trellis_delta_dc_weight;
 };
 
-#ifdef C_ARITH_CODING_SUPPORTED
-/* The following two definitions specify the allocation chunk size
- * for the statistics area.
- * According to sections F.1.4.4.1.3 and F.1.4.4.2, we need at least
- * 49 statistics bins for DC, and 245 statistics bins for AC coding.
- *
- * We use a compact representation with 1 byte per statistics bin,
- * thus the numbers directly represent byte sizes.
- * This 1 byte per statistics bin contains the meaning of the MPS
- * (more probable symbol) in the highest bit (mask 0x80), and the
- * index into the probability estimation state machine table
- * in the lower bits (mask 0x7F).
- */
-
-#define DC_STAT_BINS 64
-#define AC_STAT_BINS 256
-
-typedef struct {
-  float rate_dc[DC_STAT_BINS][2];
-  float rate_ac[AC_STAT_BINS][2];
-  int arith_dc_L;
-  int arith_dc_U;
-  int arith_ac_K;
-} arith_rates;
-#endif
-
 /* Main buffer control (downsampled-data buffer) */
 struct jpeg_c_main_controller {
   void (*start_pass) (j_compress_ptr cinfo, J_BUF_MODE pass_mode);
@@ -179,7 +117,7 @@ struct jpeg_forward_dct {
   void (*forward_DCT) (j_compress_ptr cinfo, jpeg_component_info *compptr,
                        JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
                        JDIMENSION start_row, JDIMENSION start_col,
-                       JDIMENSION num_blocks, JBLOCKROW dst);
+                       JDIMENSION num_blocks);
 };
 
 /* Entropy encoding */
@@ -217,8 +155,8 @@ struct jpeg_decomp_master {
   /* Partial decompression variables */
   JDIMENSION first_iMCU_col;
   JDIMENSION last_iMCU_col;
-  JDIMENSION first_MCU_col[MAX_COMPS_IN_SCAN];
+  JDIMENSION first_MCU_col[MAX_COMPONENTS];
-  JDIMENSION last_MCU_col[MAX_COMPS_IN_SCAN];
+  JDIMENSION last_MCU_col[MAX_COMPONENTS];
   boolean jinit_upsampler_no_alloc;
 };
 
@@ -402,12 +340,6 @@ EXTERN(void) jinit_merged_upsampler (j_decompress_ptr cinfo);
 /* Memory manager initialization */
 EXTERN(void) jinit_memory_mgr (j_common_ptr cinfo);
 
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-EXTERN(void)
-jpeg_mem_dest_internal (j_compress_ptr cinfo,
-               unsigned char **outbuffer, unsigned long *outsize, int pool_id);
-#endif
-
 /* Utility routines in jutils.c */
 EXTERN(long) jdiv_round_up (long a, long b);
 EXTERN(long) jround_up (long a, long b);
@@ -417,16 +349,6 @@ EXTERN(void) jcopy_sample_rows (JSAMPARRAY input_array, int source_row,
 EXTERN(void) jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row,
                               JDIMENSION num_blocks);
 EXTERN(void) jzero_far (void *target, size_t bytestozero);
-
-#ifdef C_ARITH_CODING_SUPPORTED
-EXTERN(void) jget_arith_rates (j_compress_ptr cinfo, int dc_tbl_no, int ac_tbl_no, arith_rates *r);
-
-EXTERN(void) quantize_trellis_arith
-(j_compress_ptr cinfo, arith_rates *r, JBLOCKROW coef_blocks, JBLOCKROW src, JDIMENSION num_blocks,
- JQUANT_TBL * qtbl, double *norm_src, double *norm_coef, JCOEF *last_dc_val,
- JBLOCKROW coef_blocks_above, JBLOCKROW src_above);
-#endif
-
 /* Constant tables in jutils.c */
 #if 0                           /* This table is not actually needed in v6a */
 extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */

jpeglib.h

@@ -7,8 +7,6 @@
  * libjpeg-turbo Modifications:
  * Copyright (C) 2009-2011, 2013-2014, 2016, D. R. Commander.
  * Copyright (C) 2015, Google, Inc.
- * mozjpeg Modifications:
- * Copyright (C) 2014, Mozilla Corporation.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -267,52 +265,6 @@ typedef enum {
 } J_DITHER_MODE;
 
 
-/* These 32-bit GUIDs and the corresponding jpeg_*_get_*_param()/
- * jpeg_*_set_*_param() functions allow for extending the libjpeg API without
- * breaking backward ABI compatibility.  The actual parameters are stored in
- * the opaque jpeg_comp_master and jpeg_decomp_master structs.
- */
-
-/* Boolean extension parameters */
-
-typedef enum {
-  JBOOLEAN_OPTIMIZE_SCANS = 0x680C061E, /* TRUE=optimize progressive coding scans */
-  JBOOLEAN_TRELLIS_QUANT = 0xC5122033, /* TRUE=use trellis quantization */
-  JBOOLEAN_TRELLIS_QUANT_DC = 0x339D4C0C, /* TRUE=use trellis quant for DC coefficient */
-  JBOOLEAN_TRELLIS_EOB_OPT = 0xD7F73780, /* TRUE=optimize for sequences of EOB */
-  JBOOLEAN_USE_LAMBDA_WEIGHT_TBL = 0x339DB65F, /* TRUE=use lambda weighting table */
-  JBOOLEAN_USE_SCANS_IN_TRELLIS = 0xFD841435, /* TRUE=use scans in trellis optimization */
-  JBOOLEAN_TRELLIS_Q_OPT = 0xE12AE269, /* TRUE=optimize quant table in trellis loop */
-  JBOOLEAN_OVERSHOOT_DERINGING = 0x3F4BBBF9 /* TRUE=preprocess input to reduce ringing of edges on white background */
-} J_BOOLEAN_PARAM;
-
-/* Floating point parameters */
-
-typedef enum {
-  JFLOAT_LAMBDA_LOG_SCALE1 = 0x5B61A599,
-  JFLOAT_LAMBDA_LOG_SCALE2 = 0xB9BBAE03,
-  JFLOAT_TRELLIS_DELTA_DC_WEIGHT = 0x13775453
-} J_FLOAT_PARAM;
-
-/* Integer parameters */
-
-typedef enum {
-  JINT_COMPRESS_PROFILE = 0xE9918625, /* compression profile */
-  JINT_TRELLIS_FREQ_SPLIT = 0x6FAFF127, /* splitting point for frequency in trellis quantization */
-  JINT_TRELLIS_NUM_LOOPS = 0xB63EBF39, /* number of trellis loops */
-  JINT_BASE_QUANT_TBL_IDX = 0x44492AB1, /* base quantization table index */
-  JINT_DC_SCAN_OPT_MODE = 0x0BE7AD3C /* DC scan optimization mode */
-} J_INT_PARAM;
-
-
-/* Values for the JINT_COMPRESS_PROFILE parameter (32-bit GUIDs) */
-
-enum {
-  JCP_MAX_COMPRESSION = 0x5D083AAD, /* best compression ratio (progressive, all mozjpeg extensions) */
-  JCP_FASTEST = 0x2AEA5CB4 /* libjpeg[-turbo] defaults (baseline, no mozjpeg extensions) */
-};
-
-
 /* Common fields between JPEG compression and decompression master structs. */
 
 #define jpeg_common_fields \
@@ -991,7 +943,6 @@ EXTERN(void) jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl,
                                    const unsigned int *basic_table,
                                    int scale_factor, boolean force_baseline);
 EXTERN(int) jpeg_quality_scaling (int quality);
-EXTERN(float) jpeg_float_quality_scaling (float quality);
 EXTERN(void) jpeg_simple_progression (j_compress_ptr cinfo);
 EXTERN(void) jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress);
 EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table (j_common_ptr cinfo);
@@ -1053,10 +1004,10 @@ EXTERN(JDIMENSION) jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
                                        JDIMENSION max_lines);
 
 /* Additional entry points for buffered-image mode. */
-EXTERN(boolean) jpeg_has_multiple_scans (const j_decompress_ptr cinfo);
+EXTERN(boolean) jpeg_has_multiple_scans (j_decompress_ptr cinfo);
 EXTERN(boolean) jpeg_start_output (j_decompress_ptr cinfo, int scan_number);
 EXTERN(boolean) jpeg_finish_output (j_decompress_ptr cinfo);
-EXTERN(boolean) jpeg_input_complete (const j_decompress_ptr cinfo);
+EXTERN(boolean) jpeg_input_complete (j_decompress_ptr cinfo);
 EXTERN(void) jpeg_new_colormap (j_decompress_ptr cinfo);
 EXTERN(int) jpeg_consume_input (j_decompress_ptr cinfo);
 /* Return value is one of: */
@@ -1085,7 +1036,7 @@ EXTERN(void) jpeg_set_marker_processor (j_decompress_ptr cinfo,
 EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients (j_decompress_ptr cinfo);
 EXTERN(void) jpeg_write_coefficients (j_compress_ptr cinfo,
                                       jvirt_barray_ptr *coef_arrays);
-EXTERN(void) jpeg_copy_critical_parameters (const j_decompress_ptr srcinfo,
+EXTERN(void) jpeg_copy_critical_parameters (j_decompress_ptr srcinfo,
                                             j_compress_ptr dstinfo);
 
 /* If you choose to abort compression or decompression before completing
@@ -1106,28 +1057,6 @@ EXTERN(void) jpeg_destroy (j_common_ptr cinfo);
 /* Default restart-marker-resync procedure for use by data source modules */
 EXTERN(boolean) jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired);
 
-/* Accessor functions for extension parameters */
-#define JPEG_C_PARAM_SUPPORTED 1
-EXTERN(boolean) jpeg_c_bool_param_supported (const j_compress_ptr cinfo,
-                                             J_BOOLEAN_PARAM param);
-EXTERN(void) jpeg_c_set_bool_param (j_compress_ptr cinfo,
-                                    J_BOOLEAN_PARAM param, boolean value);
-EXTERN(boolean) jpeg_c_get_bool_param (const j_compress_ptr cinfo,
-                                       J_BOOLEAN_PARAM param);
-
-EXTERN(boolean) jpeg_c_float_param_supported (const j_compress_ptr cinfo,
-                                              J_FLOAT_PARAM param);
-EXTERN(void) jpeg_c_set_float_param (j_compress_ptr cinfo, J_FLOAT_PARAM param,
-                                     float value);
-EXTERN(float) jpeg_c_get_float_param (const j_compress_ptr cinfo,
-                                      J_FLOAT_PARAM param);
-
-EXTERN(boolean) jpeg_c_int_param_supported (const j_compress_ptr cinfo,
-                                            J_INT_PARAM param);
-EXTERN(void) jpeg_c_set_int_param (j_compress_ptr cinfo, J_INT_PARAM param,
-                                   int value);
-EXTERN(int) jpeg_c_get_int_param (const j_compress_ptr cinfo, J_INT_PARAM param);
-
 
 /* These marker codes are exported since applications and data source modules
  * are likely to want to use them.

jpegtran.c

@@ -5,9 +5,8 @@
  * Copyright (C) 1995-2010, Thomas G. Lane, Guido Vollbeding.
  * libjpeg-turbo Modifications:
  * Copyright (C) 2010, 2014, D. R. Commander.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains a command-line user interface for JPEG transcoding.
  * It is very similar to cjpeg.c, and partly to djpeg.c, but provides
@@ -44,8 +43,6 @@ static const char *progname;    /* program name for error messages */
 static char *outfilename;       /* for -outfile switch */
 static JCOPY_OPTION copyoption; /* -copy switch */
 static jpeg_transform_info transformoption; /* image transformation options */
-boolean memsrc = FALSE;  /* for -memsrc switch */
-#define INPUT_BUF_SIZE  4096
 
 
 LOCAL(void)
@@ -64,13 +61,11 @@ usage (void)
   fprintf(stderr, "  -copy comments Copy only comment markers (default)\n");
   fprintf(stderr, "  -copy all      Copy all extra markers\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, "  -revert        Revert to standard defaults (instead of mozjpeg defaults)\n");
-  fprintf(stderr, "  -fastcrush     Disable progressive scan optimization\n");
   fprintf(stderr, "Switches for modifying the image:\n");
 #if TRANSFORMS_SUPPORTED
   fprintf(stderr, "  -crop WxH+X+Y  Crop to a rectangular subarea\n");
@@ -142,11 +137,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
   char *scansarg = NULL;        /* saves -scans parm if any */
 
   /* Set up default JPEG parameters. */
-#ifdef C_PROGRESSIVE_SUPPORTED
-  simple_progressive = cinfo->num_scans == 0 ? FALSE : TRUE;
-#else
   simple_progressive = FALSE;
-#endif
   outfilename = NULL;
   copyoption = JCOPYOPT_DEFAULT;
   transformoption.transform = JXFORM_NONE;
@@ -175,9 +166,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       /* Use arithmetic coding. */
 #ifdef C_ARITH_CODING_SUPPORTED
       cinfo->arith_code = TRUE;
-
-      /* No table optimization required for AC */
-      cinfo->optimize_coding = FALSE;
 #else
       fprintf(stderr, "%s: sorry, arithmetic coding not supported\n",
               progname);
@@ -242,9 +230,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
       else
         usage();
 
-    } else if (keymatch(arg, "fastcrush", 4)) {
-      jpeg_c_set_bool_param(cinfo, JBOOLEAN_OPTIMIZE_SCANS, FALSE);
-      
     } else if (keymatch(arg, "grayscale", 1) || keymatch(arg, "greyscale",1)) {
       /* Force to grayscale. */
 #if TRANSFORMS_SUPPORTED
@@ -317,10 +302,6 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
         /* restart_interval will be computed during startup */
       }
 
-    } else if (keymatch(arg, "revert", 3)) {
-      /* revert to old JPEG default */
-      jpeg_c_set_int_param(cinfo, JINT_COMPRESS_PROFILE, JCP_FASTEST);
-      
     } else if (keymatch(arg, "rotate", 2)) {
       /* Rotate 90, 180, or 270 degrees (measured clockwise). */
       if (++argn >= argc)       /* advance to next argument */
@@ -404,10 +385,6 @@ main (int argc, char **argv)
    * single file pointer for sequential input and output operation.
    */
   FILE *fp;
-  unsigned char *inbuffer = NULL;
-  unsigned long insize = 0;
-  unsigned char *outbuffer = NULL;
-  unsigned long outsize = 0;
 
   /* On Mac, fetch a command line. */
 #ifdef USE_CCOMMAND
@@ -477,32 +454,6 @@ main (int argc, char **argv)
 #endif
 
   /* Specify data source for decompression */
-  if (jpeg_c_int_param_supported(&dstinfo, JINT_COMPRESS_PROFILE) &&
-      jpeg_c_get_int_param(&dstinfo, JINT_COMPRESS_PROFILE)
-        == JCP_MAX_COMPRESSION)
-    memsrc = TRUE; /* needed to revert to original */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-  if (memsrc) {
-    size_t nbytes;
-    do {
-      inbuffer = (unsigned char *)realloc(inbuffer, insize + INPUT_BUF_SIZE);
-      if (inbuffer == NULL) {
-        fprintf(stderr, "%s: memory allocation failure\n", progname);
-        exit(EXIT_FAILURE);
-      }
-      nbytes = JFREAD(fp, &inbuffer[insize], INPUT_BUF_SIZE);
-      if (nbytes < INPUT_BUF_SIZE && ferror(fp)) {
-        if (file_index < argc)
-          fprintf(stderr, "%s: can't read from %s\n", progname,
-                  argv[file_index]);
-        else
-          fprintf(stderr, "%s: can't read from stdin\n", progname);
-      }
-      insize += (unsigned long)nbytes;
-    } while (nbytes == INPUT_BUF_SIZE);
-    jpeg_mem_src(&srcinfo, inbuffer, insize);
-  } else
-#endif
   jpeg_stdio_src(&srcinfo, fp);
 
   /* Enable saving of extra markers that we want to copy */
@@ -565,13 +516,6 @@ main (int argc, char **argv)
   file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE);
 
   /* Specify data destination for compression */
-#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
-  if (jpeg_c_int_param_supported(&dstinfo, JINT_COMPRESS_PROFILE) &&
-      jpeg_c_get_int_param(&dstinfo, JINT_COMPRESS_PROFILE)
-        == JCP_MAX_COMPRESSION)
-    jpeg_mem_dest(&dstinfo, &outbuffer, &outsize);
-  else
-#endif
   jpeg_stdio_dest(&dstinfo, fp);
 
   /* Start compressor (note no image data is actually written here) */
@@ -589,29 +533,6 @@ main (int argc, char **argv)
 
   /* Finish compression and release memory */
   jpeg_finish_compress(&dstinfo);
-  
-  if (jpeg_c_int_param_supported(&dstinfo, JINT_COMPRESS_PROFILE) &&
-      jpeg_c_get_int_param(&dstinfo, JINT_COMPRESS_PROFILE)
-        == JCP_MAX_COMPRESSION) {
-    size_t nbytes;
-    
-    unsigned char *buffer = outbuffer;
-    unsigned long size = outsize;
-    if (insize < size) {
-      size = insize;
-      buffer = inbuffer;
-    }
-
-    nbytes = JFWRITE(fp, buffer, size);
-    if (nbytes < size && ferror(fp)) {
-      if (file_index < argc)
-        fprintf(stderr, "%s: can't write to %s\n", progname,
-                argv[file_index]);
-      else
-        fprintf(stderr, "%s: can't write to stdout\n", progname);
-    }
-  }
-    
   jpeg_destroy_compress(&dstinfo);
   (void) jpeg_finish_decompress(&srcinfo);
   jpeg_destroy_decompress(&srcinfo);
@@ -624,9 +545,6 @@ main (int argc, char **argv)
   end_progress_monitor((j_common_ptr) &dstinfo);
 #endif
 
-  free(inbuffer);
-  free(outbuffer);
-
   /* All done. */
   exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS);
   return 0;                     /* suppress no-return-value warnings */

jpegyuv.c

@@ -1,172 +0,0 @@
-/*
- * Written by Josh Aas and Tim Terriberry
- * Copyright (c) 2013, Mozilla Corporation
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. Neither the name of the Mozilla Corporation nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-/* Input: JPEG YUV 4:2:0 */
-/* Output: YUV 4:2:0 */
-
-/* gcc -std=c99 jpegyuv.c -I/opt/local/include/ -L/opt/local/lib/ -ljpeg -o jpegyuv */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "jpeglib.h"
-
-int main(int argc, char *argv[]) {
-  const char *jpg_path;
-  const char *yuv_path;
-  struct jpeg_decompress_struct cinfo;
-  struct jpeg_error_mgr jerr;
-  FILE *jpg_fd;
-  int luma_width;
-  int luma_height;
-  int chroma_width;
-  int chroma_height;
-  int frame_width;
-  int yuv_size;
-  JSAMPLE *jpg_buffer;
-  JSAMPROW yrow_pointer[16];
-  JSAMPROW cbrow_pointer[8];
-  JSAMPROW crrow_pointer[8];
-  JSAMPROW *plane_pointer[3];
-  unsigned char *yuv_buffer;
-  int x;
-  int y;
-  FILE *yuv_fd;
-
-  if (argc != 3) {
-    fprintf(stderr, "Required arguments:\n");
-    fprintf(stderr, "1. Path to JPG input file\n");
-    fprintf(stderr, "2. Path to YUV output file\n");
-    return 1;
-  }
-
-  /* Will check these for validity when opening via 'fopen'. */
-  jpg_path = argv[1];
-  yuv_path = argv[2];
-
-  cinfo.err = jpeg_std_error(&jerr);
-  jpeg_create_decompress(&cinfo);
-
-  jpg_fd = fopen(jpg_path, "rb");
-  if (!jpg_fd) {
-    fprintf(stderr, "Invalid path to JPEG file!\n");
-    return 1;
-  }
-
-  jpeg_stdio_src(&cinfo, jpg_fd);
-
-  jpeg_read_header(&cinfo, TRUE);
-
-  cinfo.raw_data_out = TRUE;
-  cinfo.do_fancy_upsampling = FALSE;
-
-  jpeg_start_decompress(&cinfo);
-
-  luma_width = cinfo.output_width;
-  luma_height = cinfo.output_height;
-
-  chroma_width = (luma_width + 1) >> 1;
-  chroma_height = (luma_height + 1) >> 1;
-
-  yuv_size = luma_width*luma_height + 2*chroma_width*chroma_height;
-  yuv_buffer = malloc(yuv_size);
-  if (!yuv_buffer) {
-    fclose(jpg_fd);
-    fprintf(stderr, "Memory allocation failure!\n");
-    return 1;
-  }
-
-  frame_width = (cinfo.output_width + (16 - 1)) & ~(16 - 1);
-
-  jpg_buffer = malloc(frame_width*16 + 2*(frame_width/2)*8);
-  if (!jpg_buffer) {
-    fclose(jpg_fd);
-    free(yuv_buffer);
-    fprintf(stderr, "Memory allocation failure!\n");
-    return 1;
-  }
-
-  plane_pointer[0] = yrow_pointer;
-  plane_pointer[1] = cbrow_pointer;
-  plane_pointer[2] = crrow_pointer;
-
-  for (y = 0; y < 16; y++) {
-    yrow_pointer[y] = &jpg_buffer[frame_width*y];
-  }
-  for (y = 0; y < 8; y++) {
-    cbrow_pointer[y] = &jpg_buffer[frame_width*16 + (frame_width/2)*y];
-    crrow_pointer[y] = &jpg_buffer[frame_width*16 + (frame_width/2)*(8 + y)];
-  }
-
-  while (cinfo.output_scanline < cinfo.output_height) {
-    int luma_scanline;
-    int chroma_scanline;
-
-    luma_scanline = cinfo.output_scanline;
-    chroma_scanline = (luma_scanline + 1) >> 1;
-
-    jpeg_read_raw_data(&cinfo, plane_pointer, 16);
-
-    for (y = 0; y < 16 && luma_scanline + y < luma_height; y++) {
-      for (x = 0; x < luma_width; x++) {
-        yuv_buffer[luma_width*(luma_scanline + y) + x] = yrow_pointer[y][x];
-      }
-    }
-    for (y = 0; y < 8 && chroma_scanline + y < chroma_height; y++) {
-      for (x = 0; x < chroma_width; x++) {
-        yuv_buffer[luma_width*luma_height +
-         chroma_width*(chroma_scanline + y) + x] = cbrow_pointer[y][x];
-        yuv_buffer[luma_width*luma_height + chroma_width*chroma_height +
-         chroma_width*(chroma_scanline + y) + x] = crrow_pointer[y][x];
-      }
-    }
-  }
-
-  jpeg_finish_decompress(&cinfo);
-  jpeg_destroy_decompress(&cinfo);
-
-  fclose(jpg_fd);
-  free(jpg_buffer);
-
-  yuv_fd = fopen(yuv_path, "wb");
-  if (!yuv_fd) {
-    fprintf(stderr, "Invalid path to YUV file!");
-    free(yuv_buffer);
-    return 1;
-  }
-  if (fwrite(yuv_buffer, yuv_size, 1, yuv_fd) != 1) {
-    fprintf(stderr, "Error writing yuv file\n");
-  }
-
-  fclose(yuv_fd);
-  free(yuv_buffer);
-
-  return 0;
-}

jversion.h

@@ -5,9 +5,8 @@
  * Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
  * libjpeg-turbo Modifications:
  * Copyright (C) 2010, 2012-2016, D. R. Commander.
- * mozjpeg Modifications:
+ * For conditions of distribution and use, see the accompanying README.ijg
- * Copyright (C) 2014, Mozilla Corporation.
+ * file.
- * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains software version identification.
  */
@@ -40,7 +39,6 @@
                         "Copyright (C) 2011-2016 Siarhei Siamashka\n" \
                         "Copyright (C) 2015-2016 Matthieu Darbois\n" \
                         "Copyright (C) 2015 Google, Inc.\n" \
-                        "Copyright (C) 2014 Mozilla Corporation\n" \
                         "Copyright (C) 2013-2014 MIPS Technologies, Inc.\n" \
                         "Copyright (C) 2013 Linaro Limited\n" \
                         "Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)\n" \

rd_average.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-set -e
-
-if [ $# == 0 ]; then
-  echo "usage: OUTPUT=<label> $0 *.out"
-  exit 1
-fi
-
-TOTAL=total.out
-
-if [ -n "$OUTPUT" ]; then
-  TOTAL="$OUTPUT.out"
-fi
-
-awk '{size[FNR]+=$2;bytes[FNR]+=$3;psnr[FNR]+=$2*$4;psnrhvs[FNR]+=$2*$5;ssim[FNR]+=$2*$6;fastssim[FNR]+=$2*$7;}END{for(i=1;i<=FNR;i++)print i-1,size[i],bytes[i],psnr[i]/size[i],psnrhvs[i]/size[i],ssim[i]/size[i],fastssim[i]/size[i];}' $@ > $TOTAL

rd_collect.sh

@@ -1,106 +0,0 @@
-#!/bin/bash
-set -e
-
-if [ $# == 0 ]; then
-  echo "usage: DAALA_ROOT=<daala_root> MOZJPEG_ROOT=<mozjpeg_root> $0 *.y4m"
-  exit 1
-fi
-
-if [ -z $MOZJPEG_ROOT ]; then
-  MOZJPEG_ROOT=.
-fi
-
-if [ -z $DAALA_ROOT ]; then
-  echo "DAALA_ROOT not set."
-  exit 1
-fi
-
-if [ -z "$PLANE" ]; then
-  export PLANE=0
-fi
-
-if [ $PLANE != 0 ] && [ $PLANE != 1 ] && [ $PLANE != 2 ]; then
-  echo "Invalid plane $PLANE. Must be 0, 1 or 2."
-  exit 1
-fi
-
-if [ -z "$YUVJPEG" ]; then
-  export YUVJPEG=$MOZJPEG_ROOT/yuvjpeg
-fi
-
-if [ -z "$JPEGYUV" ]; then
-  export JPEGYUV=$MOZJPEG_ROOT/jpegyuv
-fi
-
-if [ ! -x "$YUVJPEG" ]; then
-  echo "Executable not found YUVJPEG=$YUVJPEG"
-  echo "Do you have the right MOZJPEG_ROOT=$MOZJPEG_ROOT"
-  exit 1
-fi
-
-if [ ! -x "$JPEGYUV" ]; then
-  echo "Executable not found JPEGYUV=$JPEGYUV"
-  echo "Do you have the right MOZJPEG_ROOT=$MOZJPEG_ROOT"
-  exit 1
-fi
-
-# TODO refactor these out of the daala project into a metrics project
-
-if [ -z "$YUV2YUV4MPEG" ]; then
-  export YUV2YUV4MPEG=$DAALA_ROOT/tools/yuv2yuv4mpeg
-fi
-
-if [ -z "$DUMP_PSNR" ]; then
-  export DUMP_PSNR=$DAALA_ROOT/tools/dump_psnr
-fi
-
-if [ -z "$DUMP_PSNRHVS" ]; then
-  export DUMP_PSNRHVS=$DAALA_ROOT/tools/dump_psnrhvs
-fi
-
-if [ -z "$DUMP_SSIM" ]; then
-  export DUMP_SSIM=$DAALA_ROOT/tools/dump_ssim
-fi
-
-if [ -z "$DUMP_FASTSSIM" ]; then
-  export DUMP_FASTSSIM=$DAALA_ROOT/tools/dump_fastssim
-fi
-
-if [ ! -x "$YUV2YUV4MPEG" ]; then
-  echo "Executable not found YUV2YUV4MPEG=$YUV2YUV4MPEG"
-  echo "Do you have the right DAALA_ROOT=$DAALA_ROOT"
-  exit 1
-fi
-
-if [ ! -x "$DUMP_PSNR" ]; then
-  echo "Executable not found DUMP_PSNR=$DUMP_PSNR"
-  echo "Do you have the right DAALA_ROOT=$DAALA_ROOT"
-  exit 1
-fi
-
-if [ ! -x "$DUMP_PSNRHVS" ]; then
-  echo "Executable not found DUMP_PSNRHVS=$DUMP_PSNRHVS"
-  echo "Do you have the right DAALA_ROOT=$DAALA_ROOT"
-  exit 1
-fi
-
-if [ ! -x "$DUMP_SSIM" ]; then
-  echo "Executable not found DUMP_SSIM=$DUMP_SSIM"
-  echo "Do you have the right DAALA_ROOT=$DAALA_ROOT"
-  exit 1
-fi
-
-if [ ! -x "$DUMP_FASTSSIM" ]; then
-  echo "Executable not found DUMP_FASTSSIM=$DUMP_FASTSSIM"
-  echo "Do you have the right DAALA_ROOT=$DAALA_ROOT"
-  exit 1
-fi
-
-RD_COLLECT_SUB=$(dirname "$0")/rd_collect_sub.sh
-
-if [ -z "$CORES" ]; then
-  CORES=`grep -i processor /proc/cpuinfo | wc -l`
-  #echo "CORES not set, using $CORES"
-fi
-
-find $@ -type f -name "*.y4m" -print0 | xargs -0 -n1 -P$CORES $RD_COLLECT_SUB

rd_collect_sub.sh

@@ -1,28 +0,0 @@
-#!/bin/bash
-set -e
-
-FILE=$1
-
-BASENAME=$(basename $FILE)
-rm $BASENAME.out 2> /dev/null || true
-echo $BASENAME
-tail -n+3 $FILE > $BASENAME-in.yuv
-WIDTH=$(head -1 $FILE | cut -d\  -f 2 | tr -d 'W')
-HEIGHT=$(head -1 $FILE | cut -d\  -f 3 | tr -d 'H')
-
-for x in {0..100}; do
-  $YUVJPEG $x "$WIDTH"x$HEIGHT $BASENAME-in.yuv $BASENAME.jpeg
-  $JPEGYUV $BASENAME.jpeg $BASENAME.yuv
-  $YUV2YUV4MPEG $BASENAME -w$WIDTH -h$HEIGHT -an0 -ad0 -c420mpeg2
-  PIXELS=$(($WIDTH*$HEIGHT))
-  SIZE=$(wc -c $BASENAME.jpeg | awk '{ print $1 }')
-  PSNR=$($DUMP_PSNR $FILE $BASENAME.y4m 2> /dev/null | grep Total | tr -s ' ' | cut -d\  -f $((4+$PLANE*2)))
-  PSNRHVS=$($DUMP_PSNRHVS $FILE $BASENAME.y4m 2> /dev/null | grep Total | tr -s ' ' | cut -d\  -f $((4+$PLANE*2)))
-  SSIM=$($DUMP_SSIM $FILE $BASENAME.y4m 2> /dev/null | grep Total | tr -s ' ' | cut -d\  -f $((4+$PLANE*2)))
-  FASTSSIM=$($DUMP_FASTSSIM -c $FILE $BASENAME.y4m 2> /dev/null | grep Total | tr -s ' ' | cut -d\  -f $((4+$PLANE*2)))
-  rm $BASENAME.jpeg $BASENAME.yuv $BASENAME.y4m
-  echo $x $PIXELS $SIZE $PSNR $PSNRHVS $SSIM $FASTSSIM >> $BASENAME.out
-  #tail -1 $BASENAME.out
-done
-
-rm $BASENAME-in.yuv

rd_plot.sh

@@ -1,47 +0,0 @@
-#!/bin/bash
-set -e
-
-# Use this to average data from multiple runs
-#awk '{size[FNR]+=$2;bytes[FNR]+=$3;psnr[FNR]+=$2*$4;psnrhvs[FNR]+=$2*$5;ssim[FNR]+=$2*$6;fastssim[FNR]+=$2*$7;}END{for(i=1;i<=FNR;i++)print i+1,size[i],bytes[i],psnr[i]/size[i],psnrhvs[i]/size[i],ssim[i]/size[i],fastssim[i]/size[i];}' *.out > total.out
-
-if [ -n "$IMAGE" ]; then
-  IMAGE="$IMAGE-"
-fi
-
-if [ $# == 0 ]; then
-  echo "usage: IMAGE=<prefix> $0 *.out"
-  exit 1
-fi
-
-if [ -z "$GNUPLOT" -a -n "`type -p gnuplot`" ]; then
-  GNUPLOT=`type -p gnuplot`
-fi
-if [ ! -x "$GNUPLOT" ]; then
-  echo "Executable not found GNUPLOT=$GNUPLOT"
-  echo "Please install it or set GNUPLOT to point to an installed copy"
-  exit 1
-fi
-
-CMDS="$CMDS set term pngcairo dashed size 1024,768;"
-CMDS="$CMDS set log x;"
-CMDS="$CMDS set xlabel 'Bits/Pixel';"
-CMDS="$CMDS set ylabel 'dB';"
-CMDS="$CMDS set key bot right;"
-
-for FILE in "$@"; do
-  BASENAME=$(basename $FILE)
-  PSNR="$PSNR $PREFIX '$FILE' using (\$3*8/\$2):4 with lines title '${BASENAME%.*} (PSNR)'"
-  PSNRHVS="$PSNRHVS $PREFIX '$FILE' using (\$3*8/\$2):5 with lines title '${BASENAME%.*} (PSNR-HVS)'"
-  SSIM="$SSIM $PREFIX '$FILE' using (\$3*8/\$2):6 with lines title '${BASENAME%.*} (SSIM)'"
-  FASTSSIM="$FASTSSIM $PREFIX '$FILE' using (\$3*8/\$2):7 with lines title '${BASENAME%.*} (FAST SSIM)'"
-  PREFIX=","
-done
-
-SUFFIX="psnr.png"
-$GNUPLOT -e "$CMDS set output \"$IMAGE$SUFFIX\"; plot $PSNR;"     2> /dev/null
-SUFFIX="psnrhvs.png"
-$GNUPLOT -e "$CMDS set output \"$IMAGE$SUFFIX\"; plot $PSNRHVS;"  2> /dev/null
-SUFFIX="ssim.png"
-$GNUPLOT -e "$CMDS set output \"$IMAGE$SUFFIX\"; plot $SSIM;"     2> /dev/null
-SUFFIX="fastssim.png"
-$GNUPLOT -e "$CMDS set output \"$IMAGE$SUFFIX\"; plot $FASTSSIM;" 2> /dev/null

rdbmp.c

@@ -383,7 +383,7 @@ start_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
     return;
   }
 
-  if (biWidth <= 0 || biHeight <= 0 || biWidth > 0x7fffffffL || biHeight > 0x7fffffffL)
+  if (biWidth <= 0 || biHeight <= 0)
     ERREXIT(cinfo, JERR_BMP_EMPTY);
   if (biPlanes != 1)
     ERREXIT(cinfo, JERR_BMP_BADPLANES);

rdjpeg.c

@@ -1,160 +0,0 @@
-/*
- * rdjpeg.c
- *
- * Copyright (C) 1991-1996, Thomas G. Lane.
- * mozjpeg Modifications:
- * Copyright (C) 2014, Mozilla Corporation.
- * This file is part of the Independent JPEG Group's software.
- * For conditions of distribution and use, see the accompanying README file.
- *
- */
-
-#include "cdjpeg.h"             /* Common decls for cjpeg/djpeg applications */
-
-#if JPEG_RAW_READER
-#define NUM_ROWS 32
-#endif
-
-/* Private version of data source object */
-
-typedef struct _jpeg_source_struct * jpeg_source_ptr;
-
-typedef struct _jpeg_source_struct {
-  struct cjpeg_source_struct pub; /* public fields */
-
-  j_compress_ptr cinfo;         /* back link saves passing separate parm */
-  
-  struct jpeg_decompress_struct dinfo;
-  struct jpeg_error_mgr jerr;
-} jpeg_source_struct;
-
-
-
-METHODDEF(JDIMENSION)
-get_rows (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  jpeg_source_ptr source = (jpeg_source_ptr) sinfo;
-  
-#if !JPEG_RAW_READER
-  return jpeg_read_scanlines(&source->dinfo, source->pub.buffer, source->pub.buffer_height);
-#else
-  jpeg_read_raw_data(&source->dinfo, source->pub.plane_pointer, 8*cinfo->max_v_samp_factor);
-
-  return 8*cinfo->max_v_samp_factor;
-#endif
-}
-
-
-/*
- * Read the file header; return image size and component count.
- */
-
-METHODDEF(void)
-start_input_jpeg (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-#if JPEG_RAW_READER
-  int i;
-#endif
-  int m;
-  jpeg_source_ptr source = (jpeg_source_ptr) sinfo;
-
-  source->dinfo.err = jpeg_std_error(&source->jerr);
-  jpeg_create_decompress(&source->dinfo);
-  jpeg_stdio_src(&source->dinfo, source->pub.input_file);
-  
-  jpeg_save_markers(&source->dinfo, JPEG_COM, 0xFFFF);
-  
-  for (m = 0; m < 16; m++)
-    jpeg_save_markers(&source->dinfo, JPEG_APP0 + m, 0xFFFF);
-
-  jpeg_read_header(&source->dinfo, TRUE);
-
-  source->pub.marker_list = source->dinfo.marker_list;
-  
-#if !JPEG_RAW_READER
-  source->dinfo.raw_data_out = FALSE;
-  
-  jpeg_start_decompress(&source->dinfo);
-
-  cinfo->in_color_space = source->dinfo.out_color_space;
-  cinfo->input_components = source->dinfo.output_components;
-  cinfo->data_precision = source->dinfo.data_precision;
-  cinfo->image_width = source->dinfo.image_width;
-  cinfo->image_height = source->dinfo.image_height;
-
-  cinfo->raw_data_in = FALSE;
-
-  source->pub.buffer = (*cinfo->mem->alloc_sarray)
-  ((j_common_ptr) cinfo, JPOOL_IMAGE,
-   (JDIMENSION) (cinfo->image_width * cinfo->input_components), (JDIMENSION) 1);
-  source->pub.buffer_height = 1;
-#else
-  source->dinfo.raw_data_out = TRUE;
-  source->dinfo.do_fancy_upsampling = FALSE;
-  
-  jpeg_start_decompress(&source->dinfo);
-
-  cinfo->in_color_space = source->dinfo.out_color_space;
-  cinfo->input_components = source->dinfo.output_components;
-  cinfo->data_precision = source->dinfo.data_precision;
-  cinfo->image_width = source->dinfo.image_width;
-  cinfo->image_height = source->dinfo.image_height;
-  
-  jpeg_set_colorspace(cinfo, source->dinfo.jpeg_color_space);
-  
-  cinfo->max_v_samp_factor = source->dinfo.max_v_samp_factor;
-  cinfo->max_h_samp_factor = source->dinfo.max_h_samp_factor;
-  
-  cinfo->raw_data_in = TRUE;
-#if JPEG_LIB_VERSION >= 70
-  cinfo->do_fancy_upsampling = FALSE;
-#endif
-  
-  for (i = 0; i < cinfo->input_components; i++) {
-    cinfo->comp_info[i].h_samp_factor = source->dinfo.comp_info[i].h_samp_factor;
-    cinfo->comp_info[i].v_samp_factor = source->dinfo.comp_info[i].v_samp_factor;
-    
-    source->pub.plane_pointer[i] =  (*cinfo->mem->alloc_sarray)
-    ((j_common_ptr) cinfo, JPOOL_IMAGE,
-     (JDIMENSION) cinfo->image_width, (JDIMENSION) NUM_ROWS);
-  }
-#endif
-
-  source->pub.get_pixel_rows = get_rows;
-}
-
-
-/*
- * Finish up at the end of the file.
- */
-
-METHODDEF(void)
-finish_input_jpeg (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-  jpeg_source_ptr source = (jpeg_source_ptr) sinfo;
-  
-  jpeg_finish_decompress(&source->dinfo);
-  jpeg_destroy_decompress(&source->dinfo);
-}
-
-
-/*
- * The module selection routine for JPEG format input.
- */
-
-GLOBAL(cjpeg_source_ptr)
-jinit_read_jpeg (j_compress_ptr cinfo)
-{
-  jpeg_source_ptr source;
-
-  /* Create module interface object */
-  source = (jpeg_source_ptr)
-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
-                                  sizeof(jpeg_source_struct));
-  source->cinfo = cinfo;        /* make back link for subroutines */
-  /* Fill in method ptrs, except get_pixel_rows which start_input sets */
-  source->pub.start_input = start_input_jpeg;
-  source->pub.finish_input = finish_input_jpeg;
-
-  return (cjpeg_source_ptr) source;
-}

rdpng.c

@@ -1,120 +0,0 @@
-
-#include "cdjpeg.h"   /* Common decls for cjpeg/djpeg applications */
-
-#ifdef PNG_SUPPORTED
-
-#include <png.h>      /* if this fails, you need to install libpng-devel */
-
-
-typedef struct png_source_struct {
-    struct cjpeg_source_struct pub;
-    png_structp  png_ptr;
-    png_infop    info_ptr;
-    JDIMENSION   current_row;
-} png_source_struct;
-
-
-METHODDEF(void)
-finish_input_png (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
-
-METHODDEF(JDIMENSION)
-get_pixel_rows_png (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
-
-METHODDEF(void)
-start_input_png (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
-
-
-GLOBAL(cjpeg_source_ptr)
-jinit_read_png(j_compress_ptr cinfo)
-{
-    png_source_struct *source = (*cinfo->mem->alloc_small)((j_common_ptr) cinfo, JPOOL_IMAGE, sizeof(png_source_struct));
-
-    memset(source, 0, sizeof(*source));
-
-    /* Fill in method ptrs, except get_pixel_rows which start_input sets */
-    source->pub.start_input = start_input_png;
-    source->pub.finish_input = finish_input_png;
-
-    return &source->pub;
-}
-
-METHODDEF(void) error_input_png(png_structp png_ptr, png_const_charp msg) {
-    j_compress_ptr cinfo = png_get_error_ptr(png_ptr);
-    ERREXITS(cinfo, JERR_PNG_ERROR, msg);
-}
-
-METHODDEF(void)
-start_input_png (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-    png_source_struct *source = (png_source_struct *)sinfo;
-
-    source->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, cinfo, error_input_png, NULL);
-    source->info_ptr = png_create_info_struct(source->png_ptr);
-
-    if (!source->png_ptr || !source->info_ptr) {
-        ERREXITS(cinfo, JERR_PNG_ERROR, "Can't create read/info_struct");
-        return;
-    }
-
-    png_set_palette_to_rgb(source->png_ptr);
-    png_set_expand_gray_1_2_4_to_8(source->png_ptr);
-    png_set_strip_alpha(source->png_ptr);
-    png_set_interlace_handling(source->png_ptr);
-
-    png_init_io(source->png_ptr, source->pub.input_file);
-    png_read_info(source->png_ptr, source->info_ptr);
-
-    png_uint_32 width, height;
-    int bit_depth, color_type;
-    png_get_IHDR(source->png_ptr, source->info_ptr, &width, &height,
-                 &bit_depth, &color_type, NULL, NULL, NULL);
-
-    if (color_type == PNG_COLOR_TYPE_GRAY) {
-        cinfo->in_color_space = JCS_GRAYSCALE;
-        cinfo->input_components = 1;
-    } else {
-        cinfo->in_color_space = JCS_RGB;
-        cinfo->input_components = 3;
-    }
-
-    if (bit_depth == 16)
-        png_set_strip_16(source->png_ptr);
-
-    cinfo->data_precision = 8;
-    cinfo->image_width = width;
-    cinfo->image_height = height;
-
-    double gamma = 0.45455;
-    if (!png_get_valid(source->png_ptr, source->info_ptr, PNG_INFO_sRGB)) {
-        png_get_gAMA(source->png_ptr, source->info_ptr, &gamma);
-    }
-    cinfo->input_gamma = gamma;
-    sinfo->get_pixel_rows = get_pixel_rows_png;
-
-    png_read_update_info(source->png_ptr, source->info_ptr);
-
-    png_size_t rowbytes = png_get_rowbytes(source->png_ptr, source->info_ptr);
-
-    source->pub.buffer = (*cinfo->mem->alloc_sarray)((j_common_ptr)cinfo, JPOOL_IMAGE, (JDIMENSION)rowbytes, 1);
-    source->pub.buffer_height = 1;
-}
-
-METHODDEF(JDIMENSION)
-get_pixel_rows_png (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-    png_source_struct *source = (png_source_struct *)sinfo;
-
-    png_read_row(source->png_ptr, source->pub.buffer[0], NULL);
-    return 1;
-}
-
-METHODDEF(void)
-finish_input_png (j_compress_ptr cinfo, cjpeg_source_ptr sinfo)
-{
-    png_source_struct *source = (png_source_struct *)sinfo;
-
-    png_read_end(source->png_ptr, source->info_ptr);
-    png_destroy_read_struct(&source->png_ptr, &source->info_ptr, NULL);
-}
-
-#endif

rdswitch.c

@@ -267,9 +267,6 @@ bogus:
     MEMCOPY(scanptr, scans, scanno * sizeof(jpeg_scan_info));
     cinfo->scan_info = scanptr;
     cinfo->num_scans = scanno;
-    
-    /* Disable scan optimization if using custom scan */
-    jpeg_c_set_bool_param(cinfo, JBOOLEAN_OPTIMIZE_SCANS, FALSE);
   }
 
   fclose(fp);
@@ -284,10 +281,7 @@ bogus:
  * The spec says that the values given produce "good" quality, and
  * when divided by 2, "very good" quality.
  */
-static const unsigned int std_luminance_quant_tbl[9][DCTSIZE2] = {
+static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = {
-  {
-    /* JPEG Annex K
-     */
   16,  11,  10,  16,  24,  40,  51,  61,
   12,  12,  14,  19,  26,  58,  60,  55,
   14,  13,  16,  24,  40,  57,  69,  56,
@@ -296,105 +290,8 @@ static const unsigned int std_luminance_quant_tbl[9][DCTSIZE2] = {
   24,  35,  55,  64,  81, 104, 113,  92,
   49,  64,  78,  87, 103, 121, 120, 101,
   72,  92,  95,  98, 112, 100, 103,  99
-  },
-  {
-    /* flat
-     */
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16
-  },
-  {
-    12, 17, 20, 21, 30, 34, 56, 63,
-    18, 20, 20, 26, 28, 51, 61, 55,
-    19, 20, 21, 26, 33, 58, 69, 55,
-    26, 26, 26, 30, 46, 87, 86, 66,
-    31, 33, 36, 40, 46, 96, 100, 73,
-    40, 35, 46, 62, 81, 100, 111, 91,
-    46, 66, 76, 86, 102, 121, 120, 101,
-    68, 90, 90, 96, 113, 102, 105, 103
-  },
-  {
-    /* From http://www.imagemagick.org/discourse-server/viewtopic.php?f=22&t=20333&p=98008#p98008
-     */
-    16,  16,  16,  18,  25,  37,  56,  85,
-    16,  17,  20,  27,  34,  40,  53,  75,
-    16,  20,  24,  31,  43,  62,  91,  135,
-    18,  27,  31,  40,  53,  74,  106, 156,
-    25,  34,  43,  53,  69,  94,  131, 189,
-    37,  40,  62,  74,  94,  124, 169, 238,
-    56,  53,  91,  106, 131, 169, 226, 311,
-    85,  75,  135, 156, 189, 238, 311, 418
-  },
-  {
-    9, 10, 12, 14, 27, 32, 51, 62,
-    11, 12, 14, 19, 27, 44, 59, 73,
-    12, 14, 18, 25, 42, 59, 79, 78,
-    17, 18, 25, 42, 61, 92, 87, 92,
-    23, 28, 42, 75, 79, 112, 112, 99,
-    40, 42, 59, 84, 88, 124, 132, 111,
-    42, 64, 78, 95, 105, 126, 125, 99,
-    70, 75, 100, 102, 116, 100, 107, 98
-  },
-  {
-    /* Relevance of human vision to JPEG-DCT compression (1992) Klein, Silverstein and Carney.
-     */
-    10, 12, 14, 19, 26, 38, 57, 86,
-    12, 18, 21, 28, 35, 41, 54, 76,
-    14, 21, 25, 32, 44, 63, 92, 136,
-    19, 28, 32, 41, 54, 75, 107, 157,
-    26, 35, 44, 54, 70, 95, 132, 190,
-    38, 41, 63, 75, 95, 125, 170, 239,
-    57, 54, 92, 107, 132, 170, 227, 312,
-    86, 76, 136, 157, 190, 239, 312, 419
-  },
-  {
-    /* DCTune perceptual optimization of compressed dental X-Rays (1997) Watson, Taylor, Borthwick
-     */
-    7, 8, 10, 14, 23, 44, 95, 241,
-    8, 8, 11, 15, 25, 47, 102, 255,
-    10, 11, 13, 19, 31, 58, 127, 255,
-    14, 15, 19, 27, 44, 83, 181, 255,
-    23, 25, 31, 44, 72, 136, 255, 255,
-    44, 47, 58, 83, 136, 255, 255, 255,
-    95, 102, 127, 181, 255, 255, 255, 255,
-    241, 255, 255, 255, 255, 255, 255, 255
-  },
-  {
-    /* A visual detection model for DCT coefficient quantization (12/9/93) Ahumada, Watson, Peterson
-     */
-    15, 11, 11, 12, 15, 19, 25, 32,
-    11, 13, 10, 10, 12, 15, 19, 24,
-    11, 10, 14, 14, 16, 18, 22, 27,
-    12, 10, 14, 18, 21, 24, 28, 33,
-    15, 12, 16, 21, 26, 31, 36, 42,
-    19, 15, 18, 24, 31, 38, 45, 53,
-    25, 19, 22, 28, 36, 45, 55, 65,
-    32, 24, 27, 33, 42, 53, 65, 77
-  },
-  {
-    /* An improved detection model for DCT coefficient quantization (1993) Peterson, Ahumada and Watson
-     */
-    14, 10, 11, 14, 19, 25, 34, 45,
-    10, 11, 11, 12, 15, 20, 26, 33,
-    11, 11, 15, 18, 21, 25, 31, 38,
-    14, 12, 18, 24, 28, 33, 39, 47,
-    19, 15, 21, 28, 36, 43, 51, 59,
-    25, 20, 25, 33, 43, 54, 64, 74,
-    34, 26, 31, 39, 51, 64, 77, 91,
-    45, 33, 38, 47, 59, 74, 91, 108
-  }
 };
-
+static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = {
-static const unsigned int std_chrominance_quant_tbl[9][DCTSIZE2] = {
-  {
-    /* JPEG Annex K
-     */
   17,  18,  24,  47,  99,  99,  99,  99,
   18,  21,  26,  66,  99,  99,  99,  99,
   24,  26,  56,  99,  99,  99,  99,  99,
@@ -403,115 +300,15 @@ static const unsigned int std_chrominance_quant_tbl[9][DCTSIZE2] = {
   99,  99,  99,  99,  99,  99,  99,  99,
   99,  99,  99,  99,  99,  99,  99,  99,
   99,  99,  99,  99,  99,  99,  99,  99
-  },
-  {
-    /* flat
-     */
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16,
-    16,  16,  16,  16,  16,  16,  16,  16
-  },
-  {
-    8, 12, 15, 15, 86, 96, 96, 98,
-    13, 13, 15, 26, 90, 96, 99, 98,
-    12, 15, 18, 96, 99, 99, 99, 99,
-    17, 16, 90, 96, 99, 99, 99, 99,
-    96, 96, 99, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99
-  },
-  {
-    /* From http://www.imagemagick.org/discourse-server/viewtopic.php?f=22&t=20333&p=98008#p98008
-     */
-    16,  16,  16,  18,  25,  37,  56,  85,
-    16,  17,  20,  27,  34,  40,  53,  75,
-    16,  20,  24,  31,  43,  62,  91,  135,
-    18,  27,  31,  40,  53,  74,  106, 156,
-    25,  34,  43,  53,  69,  94,  131, 189,
-    37,  40,  62,  74,  94,  124, 169, 238,
-    56,  53,  91,  106, 131, 169, 226, 311,
-    85,  75,  135, 156, 189, 238, 311, 418
-  },
-  {
-    9, 10, 17, 19, 62, 89, 91, 97,
-    12, 13, 18, 29, 84, 91, 88, 98,
-    14, 19, 29, 93, 95, 95, 98, 97,
-    20, 26, 84, 88, 95, 95, 98, 94,
-    26, 86, 91, 93, 97, 99, 98, 99,
-    99, 100, 98, 99, 99, 99, 99, 99,
-    99, 99, 99, 99, 99, 99, 99, 99,
-    97, 97, 99, 99, 99, 99, 97, 99
-  },
-  {
-    /* Relevance of human vision to JPEG-DCT compression (1992) Klein, Silverstein and Carney.
-     * Copied from luma
-     */
-    10, 12, 14, 19, 26, 38, 57, 86,
-    12, 18, 21, 28, 35, 41, 54, 76,
-    14, 21, 25, 32, 44, 63, 92, 136,
-    19, 28, 32, 41, 54, 75, 107, 157,
-    26, 35, 44, 54, 70, 95, 132, 190,
-    38, 41, 63, 75, 95, 125, 170, 239,
-    57, 54, 92, 107, 132, 170, 227, 312,
-    86, 76, 136, 157, 190, 239, 312, 419
-  },
-  {
-    /* DCTune perceptual optimization of compressed dental X-Rays (1997) Watson, Taylor, Borthwick
-     * Copied from luma
-     */
-    7, 8, 10, 14, 23, 44, 95, 241,
-    8, 8, 11, 15, 25, 47, 102, 255,
-    10, 11, 13, 19, 31, 58, 127, 255,
-    14, 15, 19, 27, 44, 83, 181, 255,
-    23, 25, 31, 44, 72, 136, 255, 255,
-    44, 47, 58, 83, 136, 255, 255, 255,
-    95, 102, 127, 181, 255, 255, 255, 255,
-    241, 255, 255, 255, 255, 255, 255, 255
-  },
-  {
-    /* A visual detection model for DCT coefficient quantization (12/9/93) Ahumada, Watson, Peterson
-     * Copied from luma
-     */
-    15, 11, 11, 12, 15, 19, 25, 32,
-    11, 13, 10, 10, 12, 15, 19, 24,
-    11, 10, 14, 14, 16, 18, 22, 27,
-    12, 10, 14, 18, 21, 24, 28, 33,
-    15, 12, 16, 21, 26, 31, 36, 42,
-    19, 15, 18, 24, 31, 38, 45, 53,
-    25, 19, 22, 28, 36, 45, 55, 65,
-    32, 24, 27, 33, 42, 53, 65, 77
-  },
-  {
-    /* An improved detection model for DCT coefficient quantization (1993) Peterson, Ahumada and Watson
-     * Copied from luma
-     */
-    14, 10, 11, 14, 19, 25, 34, 45,
-    10, 11, 11, 12, 15, 20, 26, 33,
-    11, 11, 15, 18, 21, 25, 31, 38,
-    14, 12, 18, 24, 28, 33, 39, 47,
-    19, 15, 21, 28, 36, 43, 51, 59,
-    25, 20, 25, 33, 43, 54, 64, 74,
-    34, 26, 31, 39, 51, 64, 77, 91,
-    45, 33, 38, 47, 59, 74, 91, 108
-  }
 };
 
+
 LOCAL(void)
 jpeg_default_qtables (j_compress_ptr cinfo, boolean force_baseline)
 {
-  int quant_tbl_master_idx = 0;
+  jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl,
-  if (jpeg_c_int_param_supported(cinfo, JINT_BASE_QUANT_TBL_IDX))
-    quant_tbl_master_idx = jpeg_c_get_int_param(cinfo, JINT_BASE_QUANT_TBL_IDX);
-  
-  jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl[quant_tbl_master_idx],
                        q_scale_factor[0], force_baseline);
-  jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl[quant_tbl_master_idx],
+  jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl,
                        q_scale_factor[1], force_baseline);
 }
 #endif
@@ -524,46 +321,35 @@ set_quality_ratings (j_compress_ptr cinfo, char *arg, boolean force_baseline)
  * If there are more q-table slots than parameters, the last value is replicated.
  */
 {
-  float val = 75.f;                 /* default value */
+  int val = 75;                 /* default value */
   int tblno;
   char ch;
 
   for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) {
     if (*arg) {
       ch = ',';                 /* if not set by sscanf, will be ',' */
-      if (sscanf(arg, "%f%c", &val, &ch) < 1)
+      if (sscanf(arg, "%d%c", &val, &ch) < 1)
         return FALSE;
       if (ch != ',')            /* syntax check */
         return FALSE;
       /* Convert user 0-100 rating to percentage scaling */
 #if JPEG_LIB_VERSION >= 70
-      cinfo->q_scale_factor[tblno] = jpeg_float_quality_scaling(val);
+      cinfo->q_scale_factor[tblno] = jpeg_quality_scaling(val);
 #else
-      q_scale_factor[tblno] = jpeg_float_quality_scaling(val);
+      q_scale_factor[tblno] = jpeg_quality_scaling(val);
 #endif
       while (*arg && *arg++ != ',') /* advance to next segment of arg string */
         ;
     } else {
       /* reached end of parameter, set remaining factors to last value */
 #if JPEG_LIB_VERSION >= 70
-      cinfo->q_scale_factor[tblno] = jpeg_float_quality_scaling(val);
+      cinfo->q_scale_factor[tblno] = jpeg_quality_scaling(val);
 #else
-      q_scale_factor[tblno] = jpeg_float_quality_scaling(val);
+      q_scale_factor[tblno] = jpeg_quality_scaling(val);
 #endif
     }
   }
   jpeg_default_qtables(cinfo, force_baseline);
-
-  /* For some images chroma subsampling significantly degrades color quality,
-     making it impossible to achieve high visual quality regardless of quality setting.
-     To make the quality setting more intuitive, disable subsampling when high-quality
-     color is desired. */
-  if (val >= 90) {
-    set_sample_factors(cinfo, "1x1");
-  } else if (val >= 80) {
-    set_sample_factors(cinfo, "2x1");
-  }
-
   return TRUE;
 }
 

release/Distribution.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <installer-gui-script minSpecVersion="1">
-	<title>mozjpeg</title>
+	<title>libjpeg-turbo</title>
 	<welcome file="Welcome.rtf" />
 	<readme file="ReadMe.txt" />
 	<license file="License.rtf" />
@@ -12,13 +12,13 @@
 	<options customize="never" />
 	<choices-outline>
 		<line choice="default">
-			<line choice="com.mozilla.mozjpeg"/>
+			<line choice="com.libjpeg-turbo.libjpeg-turbo"/>
 		</line>
 	</choices-outline>
 	<choice id="default"/>
-	<choice id="com.mozilla.mozjpeg" visible="false">
+	<choice id="com.libjpeg-turbo.libjpeg-turbo" visible="false">
-		<pkg-ref id="com.mozilla.mozjpeg"/>
+		<pkg-ref id="com.libjpeg-turbo.libjpeg-turbo"/>
 	</choice>
 	<pkg-ref auth="root"
-		id="com.mozilla.mozjpeg">mozjpeg.pkg</pkg-ref>
+		id="com.libjpeg-turbo.libjpeg-turbo">libjpeg-turbo.pkg</pkg-ref>
 </installer-gui-script>

release/License.rtf

@@ -12,7 +12,7 @@
 \pard\tx220\tx720\pardeftab720\li720\fi-720
 \ls1\ilvl0\cf0 {\listtext	\'95	}Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.\
 {\listtext	\'95	}Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.\
-{\listtext	\'95	}Neither the name of the mozjpeg Project nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.\
+{\listtext	\'95	}Neither the name of the libjpeg-turbo Project nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.\
 \pard\pardeftab720\qc
 \cf0 \
 \pard\pardeftab720

release/Welcome.rtf

@@ -1,18 +1,17 @@
-{\rtf1\ansi\ansicpg1252\cocoartf1404\cocoasubrtf460
+{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf360
-{\fonttbl\f0\fnil\fcharset0 Menlo-Regular;}
+{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fmodern\fcharset0 CourierNewPSMT;}
-{\colortbl;\red255\green255\blue255;\red0\green0\blue0;\red203\green233\blue242;}
+{\colortbl;\red255\green255\blue255;}
+\margl1440\margr1440\vieww9000\viewh8400\viewkind0
 \deftab720
-\pard\tx529\tx1059\tx1589\tx2119\tx2649\tx3178\tx3708\tx4238\tx4768\tx5298\tx5827\tx6357\tx6887\tx7417\tx7947\tx8476\tx9006\tx9536\tx10066\tx10596\tx11125\tx11655\tx12185\tx12715\tx13245\tx13774\tx14304\tx14834\tx15364\tx15894\tx16423\tx16953\tx17483\tx18013\tx18543\tx19072\tx19602\tx20132\tx20662\tx21192\tx21722\tx22251\tx22781\tx23311\tx23841\tx24371\tx24900\tx25430\tx25960\tx26490\tx27020\tx27549\tx28079\tx28609\tx29139\tx29669\tx30198\tx30728\tx31258\tx31788\tx32318\tx32847\tx33377\tx33907\tx34437\tx34967\tx35496\tx36026\tx36556\tx37086\tx37616\tx38145\tx38675\tx39205\tx39735\tx40265\tx40794\tx41324\tx41854\tx42384\tx42914\tx43443\tx43973\tx44503\tx45033\tx45563\tx46093\tx46622\tx47152\tx47682\tx48212\tx48742\tx49271\tx49801\tx50331\tx50861\tx51391\tx51920\tx52450\tx52980\pardeftab720\li529\fi-530\partightenfactor0
+\pard\pardeftab720\ql\qnatural
 
-\f0\fs22 \cf2 \CocoaLigature0 TThi  /opt/mozjpeg/bin/uninstall\
+\f0\fs24 \cf0 This installer will install the libjpeg-turbo SDK and run-time libraries onto your computer so that you can use libjpeg-turbo to build new applications or accelerate existing ones.  To remove the libjpeg-turbo package, run\
-\pard\tx529\tx1059\tx1589\tx2119\tx2649\tx3178\tx3708\tx4238\tx4768\tx5298\tx5827\tx6357\tx6887\tx7417\tx7947\tx8476\tx9006\tx9536\tx10066\tx10596\tx11125\tx11655\tx12185\tx12715\tx13245\tx13774\tx14304\tx14834\tx15364\tx15894\tx16423\tx16953\tx17483\tx18013\tx18543\tx19072\tx19602\tx20132\tx20662\tx21192\tx21722\tx22251\tx22781\tx23311\tx23841\tx24371\tx24900\tx25430\tx25960\tx26490\tx27020\tx27549\tx28079\tx28609\tx29139\tx29669\tx30198\tx30728\tx31258\tx31788\tx32318\tx32847\tx33377\tx33907\tx34437\tx34967\tx35496\tx36026\tx36556\tx37086\tx37616\tx38145\tx38675\tx39205\tx39735\tx40265\tx40794\tx41324\tx41854\tx42384\tx42914\tx43443\tx43973\tx44503\tx45033\tx45563\tx46093\tx46622\tx47152\tx47682\tx48212\tx48742\tx49271\tx49801\tx50331\tx50861\tx51391\tx51920\tx52450\tx52980\pardeftab720\li662\fi-663\partightenfactor0
-\cf2  installer will install the mozjpeg SDK and run-time libraries onto your computer so that you can use mozjpeg to build new applications.  To remove the mozjpeg package, run\
-\pard\tx529\tx1059\tx1589\tx2119\tx2649\tx3178\tx3708\tx4238\tx4768\tx5298\tx5827\tx6357\tx6887\tx7417\tx7947\tx8476\tx9006\tx9536\tx10066\tx10596\tx11125\tx11655\tx12185\tx12715\tx13245\tx13774\tx14304\tx14834\tx15364\tx15894\tx16423\tx16953\tx17483\tx18013\tx18543\tx19072\tx19602\tx20132\tx20662\tx21192\tx21722\tx22251\tx22781\tx23311\tx23841\tx24371\tx24900\tx25430\tx25960\tx26490\tx27020\tx27549\tx28079\tx28609\tx29139\tx29669\tx30198\tx30728\tx31258\tx31788\tx32318\tx32847\tx33377\tx33907\tx34437\tx34967\tx35496\tx36026\tx36556\tx37086\tx37616\tx38145\tx38675\tx39205\tx39735\tx40265\tx40794\tx41324\tx41854\tx42384\tx42914\tx43443\tx43973\tx44503\tx45033\tx45563\tx46093\tx46622\tx47152\tx47682\tx48212\tx48742\tx49271\tx49801\tx50331\tx50861\tx51391\tx51920\tx52450\tx52980\pardeftab720\li529\fi-530\partightenfactor0
-\cf2 is installer will install the \cb3 mozjpeg\cb1  SDK and run-time libraries onto your computer so that you can use \cb3 mozjpeg\cb1  to build new applications.  To remove the \cb3 mozjpeg\cb1  package, run\
 \
-\pard\tx529\tx1059\tx1589\tx2119\tx2649\tx3178\tx3708\tx4238\tx4768\tx5298\tx5827\tx6357\tx6887\tx7417\tx7947\tx8476\tx9006\tx9536\tx10066\tx10596\tx11125\tx11655\tx12185\tx12715\tx13245\tx13774\tx14304\tx14834\tx15364\tx15894\tx16423\tx16953\tx17483\tx18013\tx18543\tx19072\tx19602\tx20132\tx20662\tx21192\tx21722\tx22251\tx22781\tx23311\tx23841\tx24371\tx24900\tx25430\tx25960\tx26490\tx27020\tx27549\tx28079\tx28609\tx29139\tx29669\tx30198\tx30728\tx31258\tx31788\tx32318\tx32847\tx33377\tx33907\tx34437\tx34967\tx35496\tx36026\tx36556\tx37086\tx37616\tx38145\tx38675\tx39205\tx39735\tx40265\tx40794\tx41324\tx41854\tx42384\tx42914\tx43443\tx43973\tx44503\tx45033\tx45563\tx46093\tx46622\tx47152\tx47682\tx48212\tx48742\tx49271\tx49801\tx50331\tx50861\tx51391\tx51920\tx52450\tx52980\pardeftab720\li794\fi-795\partightenfactor0
+\pard\pardeftab720\ql\qnatural
-\cf2   /opt/\cb3 mozjpeg\cb1 /bin/uninstall\
+
-\pard\tx529\tx1059\tx1589\tx2119\tx2649\tx3178\tx3708\tx4238\tx4768\tx5298\tx5827\tx6357\tx6887\tx7417\tx7947\tx8476\tx9006\tx9536\tx10066\tx10596\tx11125\tx11655\tx12185\tx12715\tx13245\tx13774\tx14304\tx14834\tx15364\tx15894\tx16423\tx16953\tx17483\tx18013\tx18543\tx19072\tx19602\tx20132\tx20662\tx21192\tx21722\tx22251\tx22781\tx23311\tx23841\tx24371\tx24900\tx25430\tx25960\tx26490\tx27020\tx27549\tx28079\tx28609\tx29139\tx29669\tx30198\tx30728\tx31258\tx31788\tx32318\tx32847\tx33377\tx33907\tx34437\tx34967\tx35496\tx36026\tx36556\tx37086\tx37616\tx38145\tx38675\tx39205\tx39735\tx40265\tx40794\tx41324\tx41854\tx42384\tx42914\tx43443\tx43973\tx44503\tx45033\tx45563\tx46093\tx46622\tx47152\tx47682\tx48212\tx48742\tx49271\tx49801\tx50331\tx50861\tx51391\tx51920\tx52450\tx52980\pardeftab720\li560\fi-561\partightenfactor0
+\f1 \cf0   /opt/libjpeg-turbo/bin/uninstall\
-\cf2 \
+\pard\pardeftab720\ql\qnatural
+
+\f0 \cf0 \
 from the command line.\
 }

release/deb-control.tmpl

@@ -4,21 +4,28 @@ Section: misc
 Priority: optional
 Architecture: {__ARCH}
 Essential: no
-Maintainer: Mozilla Research <joshmoz@gmail.com>
+Maintainer: The libjpeg-turbo Project <information@libjpeg-turbo.org>
-Homepage: https://github.com/mozilla/mozjpeg
+Homepage: http://www.libjpeg-turbo.org
 Installed-Size: {__SIZE}
-Description: A JPEG codec that provides increased compression for JPEG images (at the expense of compression performance)
+Description: A SIMD-accelerated JPEG codec that provides both the libjpeg and TurboJPEG APIs
- mozjpeg is a fork of libjpeg-turbo that aims to speed up load times of web
+ libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
- pages by reducing the size (and, by extension, the transmission time) of JPEG
+ NEON, AltiVec) to accelerate baseline JPEG compression and decompression on
- files.  It accomplishes this by enabling optimized Huffman trees and
+ x86, x86-64, ARM, and PowerPC systems.  On such systems, libjpeg-turbo is
- progressive entropy coding by default in the JPEG compressor, as well as
+ generally 2-6x as fast as libjpeg, all else being equal.  On other types of
- splitting the spectrum of DCT coefficients into separate scans and using
+ systems, libjpeg-turbo can still outperform libjpeg by a significant amount,
- Trellis quantisation.
+ 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.
  .
- Although it is based on libjpeg-turbo, mozjpeg is not intended to be a
+ libjpeg-turbo implements both the traditional libjpeg API as well as the less
- general-purpose or high-performance JPEG library.  Its performance is highly
+ powerful but more straightforward TurboJPEG API.  libjpeg-turbo also features
- "asymmetric".  That is, the JPEG files it generates require much more time to
+ colorspace extensions that allow it to compress from/decompress to 32-bit and
- compress than to decompress.  When the default settings are used, mozjpeg is
+ big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java
- considerably slower than libjpeg-turbo or even libjpeg at compressing images.
+ interface.
- Thus, it is not generally suitable for real-time compression.  It is best used
+ .
- as part of a web encoding workflow.
+ libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated
+ derivative of libjpeg v6b developed by Miyasaka Masaru.  The TigerVNC and
+ VirtualGL projects made numerous enhancements to the codec in 2009, and in
+ early 2010, libjpeg-turbo spun off into an independent project, with the goal
+ of making high-speed JPEG compression/decompression technology available to a
+ broader range of users and developers.

release/libjpeg-turbo.nsi.in

@@ -80,7 +80,7 @@ Section "@CMAKE_PROJECT_NAME@ SDK for @INST_PLATFORM@ (required)"
 	File "@CMAKE_SOURCE_DIR@\turbojpeg.h"
 	SetOutPath $INSTDIR\doc
 	File "@CMAKE_SOURCE_DIR@\README.ijg"
-	File "@CMAKE_SOURCE_DIR@\README-mozilla.txt"
+	File "@CMAKE_SOURCE_DIR@\README.md"
 	File "@CMAKE_SOURCE_DIR@\LICENSE.md"
 	File "@CMAKE_SOURCE_DIR@\example.c"
 	File "@CMAKE_SOURCE_DIR@\libjpeg.txt"
@@ -142,7 +142,7 @@ Section "Uninstall"
 	Delete $INSTDIR\include\turbojpeg.h"
 	Delete $INSTDIR\uninstall_@VERSION@.exe
 	Delete $INSTDIR\doc\README.ijg
-	Delete $INSTDIR\doc\README-mozilla.txt
+	Delete $INSTDIR\doc\README.md
 	Delete $INSTDIR\doc\LICENSE.md
 	Delete $INSTDIR\doc\example.c
 	Delete $INSTDIR\doc\libjpeg.txt

release/libjpeg-turbo.spec.in

@@ -1,4 +1,4 @@
-# Path under which mozjpeg should be installed
+# Path under which libjpeg-turbo should be installed
 %define _prefix %{__prefix}
 
 # Path under which executables should be installed
@@ -17,7 +17,7 @@
 %ifarch x86_64
 %define _lib lib64
 %else
-%if "%{_prefix}" == "/opt/mozjpeg"
+%if "%{_prefix}" == "/opt/libjpeg-turbo"
 %define _lib lib32
 %endif
 %endif
@@ -25,13 +25,13 @@
 # Path under which man pages should be installed
 %define _mandir %{__mandir}
 
-Summary: A JPEG codec that provides increased compression for JPEG images (at the expense of compression performance)
+Summary: A SIMD-accelerated JPEG codec that provides both the libjpeg and TurboJPEG APIs
 Name: @PKGNAME@
 Version: @VERSION@
-Vendor: Mozilla Research
+Vendor: The libjpeg-turbo Project
-URL: https://github.com/mozilla/mozjpeg
+URL: http://www.libjpeg-turbo.org
 Group: System Environment/Libraries
-#-->Source0: https://github.com/mozilla/mozjpeg/archive/v%{version}.tar.gz
+#-->Source0: http://prdownloads.sourceforge.net/libjpeg-turbo/libjpeg-turbo-%{version}.tar.gz
 Release: @BUILD@
 License: BSD-style
 BuildRoot: %{_blddir}/%{name}-buildroot-%{version}-%{release}
@@ -43,23 +43,29 @@ Provides: %{name} = %{version}-%{release}, @PACKAGE_NAME@ = %{version}-%{release
 %endif
 
 %description
-mozjpeg is a fork of libjpeg-turbo that aims to speed up load times of web
+libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2,
-pages by reducing the size (and, by extension, the transmission time) of JPEG
+NEON, AltiVec) to accelerate baseline JPEG compression and decompression on
-files.  It accomplishes this by enabling optimized Huffman trees and
+x86, x86-64, ARM, and PowerPC systems.  On such systems, libjpeg-turbo is
-progressive entropy coding by default in the JPEG compressor, as well as
+generally 2-6x as fast as libjpeg, all else being equal.  On other types of
-splitting the spectrum of DCT coefficients into separate scans and using
+systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by
-Trellis quantisation.
+virtue of its highly-optimized Huffman coding routines.  In many cases, the
+performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs.
 
-Although it is based on libjpeg-turbo, mozjpeg is not intended to be a
+libjpeg-turbo implements both the traditional libjpeg API as well as the less
-general-purpose or high-performance JPEG library.  Its performance is highly
+powerful but more straightforward TurboJPEG API.  libjpeg-turbo also features
-"asymmetric".  That is, the JPEG files it generates require much more time to
+colorspace extensions that allow it to compress from/decompress to 32-bit and
-compress than to decompress.  When the default settings are used, mozjpeg is
+big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java
-considerably slower than libjpeg-turbo or even libjpeg at compressing images.
+interface.
-Thus, it is not generally suitable for real-time compression.  It is best used
+
-as part of a web encoding workflow.
+libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated
+derivative of libjpeg v6b developed by Miyasaka Masaru.  The TigerVNC and
+VirtualGL projects made numerous enhancements to the codec in 2009, and in
+early 2010, libjpeg-turbo spun off into an independent project, with the goal
+of making high-speed JPEG compression/decompression technology available to a
+broader range of users and developers.
 
 #-->%prep
-#-->%setup -q -n mozjpeg-%{version}
+#-->%setup -q -n libjpeg-turbo-%{version}
 
 #-->%build
 #-->./configure prefix=%{_prefix} bindir=%{_bindir} datadir=%{_datadir} \
@@ -80,14 +86,14 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/*.la
 
 LJT_LIBDIR=%{__libdir}
 if [ ! "$LJT_LIBDIR" = "%{_libdir}" ]; then
-	echo ERROR: mozjpeg must be configured with libdir=%{_prefix}/%{_lib} when generating an in-tree RPM for this architecture.
+	echo ERROR: libjpeg-turbo must be configured with libdir=%{_prefix}/%{_lib} when generating an in-tree RPM for this architecture.
 	exit 1
 fi
 
 #-->%endif
 
 LJT_DOCDIR=%{__docdir}
-if [ "%{_prefix}" = "/opt/mozjpeg" -a "$LJT_DOCDIR" = "/opt/mozjpeg/doc" ]; then
+if [ "%{_prefix}" = "/opt/libjpeg-turbo" -a "$LJT_DOCDIR" = "/opt/libjpeg-turbo/doc" ]; then
 	ln -fs %{_docdir} $RPM_BUILD_ROOT/$LJT_DOCDIR
 fi
 
@@ -103,7 +109,7 @@ rm -rf $RPM_BUILD_ROOT
 %dir %{_docdir}
 %doc %{_docdir}/*
 %dir %{_prefix}
-%if "%{_prefix}" == "/opt/mozjpeg" && "%{_docdir}" != "%{_prefix}/doc"
+%if "%{_prefix}" == "/opt/libjpeg-turbo" && "%{_docdir}" != "%{_prefix}/doc"
  %{_prefix}/doc
 %endif
 %dir %{_bindir}

release/makecygwinpkg.in

@@ -31,7 +31,7 @@ __PWD=`pwd`
 make install DESTDIR=$TMPDIR/pkg docdir=/usr/share/doc/$PACKAGE_NAME-$VERSION \
 	exampledir=/usr/share/doc/$PACKAGE_NAME-$VERSION
 rm $TMPDIR/pkg$LIBDIR/*.la
-if [ "$PREFIX" = "/opt/mozjpeg" -a "$DOCDIR" = "/opt/mozjpeg/doc" ]; then
+if [ "$PREFIX" = "/opt/libjpeg-turbo" -a "$DOCDIR" = "/opt/libjpeg-turbo/doc" ]; then
 	ln -fs /usr/share/doc/$PACKAGE_NAME-$VERSION $TMPDIR/pkg$DOCDIR
 fi
 cd $TMPDIR/pkg

release/makedpkg.in

@@ -45,7 +45,7 @@ makedeb()
 		make install DESTDIR=$TMPDIR docdir=/usr/share/doc/$DIRNAME-$VERSION \
 			exampledir=/usr/share/doc/$DIRNAME-$VERSION
 		rm -f $TMPDIR$LIBDIR/*.la
-		if [ "$PREFIX" = "/opt/mozjpeg" -a "$DOCDIR" = "/opt/mozjpeg/doc" ]; then
+		if [ "$PREFIX" = "/opt/libjpeg-turbo" -a "$DOCDIR" = "/opt/libjpeg-turbo/doc" ]; then
 			ln -fs /usr/share/doc/$DIRNAME-$VERSION $TMPDIR$DOCDIR
 		fi
 	fi

release/makemacpkg.in

@@ -109,7 +109,7 @@ make install DESTDIR=$PKGROOT docdir=/Library/Documentation/$PACKAGE_NAME \
 	exampledir=/Library/Documentation/$PACKAGE_NAME
 rm -f $PKGROOT$LIBDIR/*.la
 
-if [ "$PREFIX" = "/opt/mozjpeg" -a "$DOCDIR" = "/opt/mozjpeg/doc" ]; then
+if [ "$PREFIX" = "/opt/libjpeg-turbo" -a "$DOCDIR" = "/opt/libjpeg-turbo/doc" ]; then
 	ln -fs /Library/Documentation/$PACKAGE_NAME $PKGROOT$DOCDIR
 fi
 
@@ -440,7 +440,7 @@ install_name_tool -id $LIBDIR/libturbojpeg.0.dylib $PKGROOT/$LIBDIR/libturbojpeg
 if [ $WITH_JAVA = 1 ]; then
 	ln -fs libturbojpeg.0.dylib $PKGROOT/$LIBDIR/libturbojpeg.jnilib
 fi
-if [ "$PREFIX" = "/opt/mozjpeg" -a "$LIBDIR" = "/opt/mozjpeg/lib" ]; then
+if [ "$PREFIX" = "/opt/libjpeg-turbo" -a "$LIBDIR" = "/opt/libjpeg-turbo/lib" ]; then
 	if [ ! -h $PKGROOT/$PREFIX/lib32 ]; then
 		ln -fs lib $PKGROOT/$PREFIX/lib32
 	fi
@@ -459,7 +459,7 @@ cp $SRCDIR/release/License.rtf $SRCDIR/release/Welcome.rtf $SRCDIR/release/ReadM
 
 mkdir $TMPDIR/dmg
 pkgbuild --root $PKGROOT --version $VERSION.$BUILD \
-	--identifier com.mozilla.$PACKAGE_NAME $TMPDIR/pkg/$PACKAGE_NAME.pkg
+	--identifier com.libjpeg-turbo.libjpeg-turbo $TMPDIR/pkg/$PACKAGE_NAME.pkg
 productbuild --distribution $SRCDIR/release/Distribution.xml \
 	--package-path $TMPDIR/pkg/ --resources $TMPDIR/pkg/ \
 	$TMPDIR/dmg/$PACKAGE_NAME.pkg

release/uninstall.in

@@ -8,7 +8,7 @@
 # - Redistributions in binary form must reproduce the above copyright notice,
 #   this list of conditions and the following disclaimer in the documentation
 #   and/or other materials provided with the distribution.
-# - Neither the name of the mozjpeg Project nor the names of its
+# - Neither the name of the libjpeg-turbo Project nor the names of its
 #   contributors may be used to endorse or promote products derived from this
 #   software without specific prior written permission.
 #
@@ -32,7 +32,7 @@ if [ ! "`id -u`" = "0" ]; then
 fi
 
 PACKAGE=@PKGNAME@
-MACPACKAGE=com.mozilla.$PACKAGE
+MACPACKAGE=com.$PACKAGE.$PACKAGE
 RECEIPT=/Library/Receipts/$PACKAGE.pkg
 
 LSBOM=
@@ -75,7 +75,7 @@ fi
 if [ -d $INCLUDEDIR ]; then
 	rmdir $INCLUDEDIR 2>&1 || EXITSTATUS=-1
 fi
-if [ "$PREFIX" = "/opt/mozjpeg" -a "$LIBDIR" = "/opt/mozjpeg/lib" ]; then
+if [ "$PREFIX" = "/opt/libjpeg-turbo" -a "$LIBDIR" = "/opt/libjpeg-turbo/lib" ]; then
 	if [ -h $LIBDIR\32 ]; then
 		rm $LIBDIR\32 2>&1 || EXITSTATUS=-1
 	fi
@@ -95,7 +95,7 @@ fi
 if [ -d $DATADIR -a "$DATADIR" != "$PREFIX" ]; then
 	rmdir $DATADIR 2>&1 || EXITSTATUS=-1
 fi
-if [ "$PREFIX" = "/opt/mozjpeg" -a -h "$PREFIX/doc" ]; then
+if [ "$PREFIX" = "/opt/libjpeg-turbo" -a -h "$PREFIX/doc" ]; then
 	rm $PREFIX/doc 2>&1 || EXITSTATUS=-1
 fi
 rmdir $PREFIX 2>&1 || EXITSTATUS=-1

sharedlib/CMakeLists.txt

@@ -16,7 +16,7 @@ if(MSVC)
 endif()
 
 foreach(src ${JPEG_SOURCES})
-  list(APPEND JPEG_SRCS "${CMAKE_SOURCE_DIR}/${src}")
+  set(JPEG_SRCS ${JPEG_SRCS} ${CMAKE_SOURCE_DIR}/${src})
 endforeach()
 
 if(WITH_SIMD)
@@ -26,10 +26,10 @@ endif()
 
 if(WITH_MEM_SRCDST AND NOT WITH_JPEG8)
   add_library(jpeg SHARED ${JPEG_SRCS} ${SIMD_OBJS}
-    "${CMAKE_SOURCE_DIR}/win/jpeg${DLL_VERSION}-memsrcdst.def")
+    ${CMAKE_SOURCE_DIR}/win/jpeg${DLL_VERSION}-memsrcdst.def)
 else()
   add_library(jpeg SHARED ${JPEG_SRCS} ${SIMD_OBJS}
-    "${CMAKE_SOURCE_DIR}/win/jpeg${DLL_VERSION}.def")
+    ${CMAKE_SOURCE_DIR}/win/jpeg${DLL_VERSION}.def)
 endif()
 set_target_properties(jpeg PROPERTIES SOVERSION ${DLL_VERSION}
   VERSION ${FULLVERSION})
@@ -50,7 +50,7 @@ else()
 	set(DJPEG_BMP_SOURCES ../wrbmp.c ../wrtarga.c)
 endif()
 
-add_executable(cjpeg ../cjpeg.c ../cdjpeg.c ../rdgif.c ../rdppm.c ../rdjpeg.c
+add_executable(cjpeg ../cjpeg.c ../cdjpeg.c ../rdgif.c ../rdppm.c
   ../rdswitch.c ${CJPEG_BMP_SOURCES})
 set_property(TARGET cjpeg PROPERTY COMPILE_FLAGS ${COMPILE_FLAGS})
 target_link_libraries(cjpeg jpeg)

simd/CMakeLists.txt

@@ -41,7 +41,7 @@ endif()
 if(MSVC_IDE)
   set(OBJDIR "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}")
 else()
-  set(OBJDIR "${CMAKE_CURRENT_BINARY_DIR}")
+  set(OBJDIR ${CMAKE_CURRENT_BINARY_DIR})
 endif()
 
 file(GLOB INC_FILES *.inc)

simd/Makefile.am

@@ -73,19 +73,24 @@ endif
 
 if SIMD_POWERPC
 
-libsimd_la_SOURCES = jsimd_powerpc.c jsimd_altivec.h jcsample.h \
+noinst_LTLIBRARIES += libsimd_altivec.la
+
+libsimd_altivec_la_SOURCES = \
 	jccolor-altivec.c     jcgray-altivec.c      jcsample-altivec.c \
 	jdcolor-altivec.c     jdmerge-altivec.c     jdsample-altivec.c \
 	jfdctfst-altivec.c    jfdctint-altivec.c \
 	jidctfst-altivec.c    jidctint-altivec.c \
 	jquanti-altivec.c
-libsimd_la_CFLAGS = -maltivec
+libsimd_altivec_la_CFLAGS = -maltivec
 
 jccolor-altivec.lo:  jccolext-altivec.c
 jcgray-altivec.lo:   jcgryext-altivec.c
 jdcolor-altivec.lo:  jdcolext-altivec.c
 jdmerge-altivec.lo:  jdmrgext-altivec.c
 
+libsimd_la_SOURCES = jsimd_powerpc.c jsimd_altivec.h jcsample.h
+libsimd_la_LIBADD = libsimd_altivec.la
+
 endif
 
 AM_CPPFLAGS = -I$(top_srcdir)

simd/jsimd_arm.c

@@ -125,7 +125,7 @@ init_simd (void)
   /* Force different settings through environment variables */
   env = getenv("JSIMD_FORCENEON");
   if ((env != NULL) && (strcmp(env, "1") == 0))
-    simd_support &= JSIMD_ARM_NEON;
+    simd_support = JSIMD_ARM_NEON;
   env = getenv("JSIMD_FORCENONE");
   if ((env != NULL) && (strcmp(env, "1") == 0))
     simd_support = 0;

simd/jsimd_arm64.c

@@ -142,7 +142,7 @@ init_simd (void)
   /* Force different settings through environment variables */
   env = getenv("JSIMD_FORCENEON");
   if ((env != NULL) && (strcmp(env, "1") == 0))
-    simd_support &= JSIMD_ARM_NEON;
+    simd_support = JSIMD_ARM_NEON;
   env = getenv("JSIMD_FORCENONE");
   if ((env != NULL) && (strcmp(env, "1") == 0))
     simd_support = 0;

simd/jsimd_arm64_neon.S

@@ -210,10 +210,16 @@ asm_function jsimd_idct_islow_neon
     TMP7            .req x13
     TMP8            .req x14
 
+    /* OUTPUT_COL is a JDIMENSION (unsigned int) argument, so the ABI doesn't
+       guarantee that the upper (unused) 32 bits of x3 are valid.  This
+       instruction ensures that those bits are set to zero. */
+    uxtw x3, w3
+
     sub             sp, sp, #64
     adr             x15, Ljsimd_idct_islow_neon_consts
-    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], #32
+    mov             x10, sp
-    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], #32
+    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [x10], #32
+    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [x10], #32
     ld1             {v0.8h, v1.8h}, [x15]
     ld1             {v2.8h, v3.8h, v4.8h, v5.8h}, [COEF_BLOCK], #64
     ld1             {v18.8h, v19.8h, v20.8h, v21.8h}, [DCT_TABLE], #64
@@ -238,7 +244,6 @@ asm_function jsimd_idct_islow_neon
     shl             v10.8h, v2.8h, #(PASS1_BITS)
     sqxtn           v16.8b, v15.8h
     mov             TMP1, v16.d[0]
-    sub             sp, sp, #64
     mvn             TMP2, TMP1
 
     cbnz            TMP2, 2f
@@ -807,6 +812,11 @@ asm_function jsimd_idct_ifast_neon
     TMP7            .req x13
     TMP8            .req x14
 
+    /* OUTPUT_COL is a JDIMENSION (unsigned int) argument, so the ABI doesn't
+       guarantee that the upper (unused) 32 bits of x3 are valid.  This
+       instruction ensures that those bits are set to zero. */
+    uxtw x3, w3
+
     /* Load and dequantize coefficients into NEON registers
      * with the following allocation:
      *       0 1 2 3 | 4 5 6 7
@@ -1101,19 +1111,18 @@ asm_function jsimd_idct_4x4_neon
     TMP3            .req x2
     TMP4            .req x15
 
+    /* OUTPUT_COL is a JDIMENSION (unsigned int) argument, so the ABI doesn't
+       guarantee that the upper (unused) 32 bits of x3 are valid.  This
+       instruction ensures that those bits are set to zero. */
+    uxtw x3, w3
+
     /* Save all used NEON registers */
-    sub             sp, sp, 272
+    sub             sp, sp, 64
-    str             x15, [sp], 16
+    mov             x9, sp
     /* Load constants (v3.4h is just used for padding) */
     adr             TMP4, Ljsimd_idct_4x4_neon_consts
-    st1             {v0.8b, v1.8b, v2.8b, v3.8b}, [sp], 32
+    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [x9], 32
-    st1             {v4.8b, v5.8b, v6.8b, v7.8b}, [sp], 32
+    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [x9], 32
-    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
-    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
-    st1             {v16.8b, v17.8b, v18.8b, v19.8b}, [sp], 32
-    st1             {v20.8b, v21.8b, v22.8b, v23.8b}, [sp], 32
-    st1             {v24.8b, v25.8b, v26.8b, v27.8b}, [sp], 32
-    st1             {v28.8b, v29.8b, v30.8b, v31.8b}, [sp], 32
     ld1             {v0.4h, v1.4h, v2.4h, v3.4h}, [TMP4]
 
     /* Load all COEF_BLOCK into NEON registers with the following allocation:
@@ -1222,16 +1231,8 @@ asm_function jsimd_idct_4x4_neon
 #endif
 
     /* vpop            {v8.4h - v15.4h}    ;not available */
-    sub             sp, sp, #272
-    ldr             x15, [sp], 16
-    ld1             {v0.8b, v1.8b, v2.8b, v3.8b}, [sp], 32
-    ld1             {v4.8b, v5.8b, v6.8b, v7.8b}, [sp], 32
     ld1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
     ld1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
-    ld1             {v16.8b, v17.8b, v18.8b, v19.8b}, [sp], 32
-    ld1             {v20.8b, v21.8b, v22.8b, v23.8b}, [sp], 32
-    ld1             {v24.8b, v25.8b, v26.8b, v27.8b}, [sp], 32
-    ld1             {v28.8b, v29.8b, v30.8b, v31.8b}, [sp], 32
     blr             x30
 
     .unreq          DCT_TABLE
@@ -1299,19 +1300,19 @@ asm_function jsimd_idct_2x2_neon
     TMP1            .req x0
     TMP2            .req x15
 
+    /* OUTPUT_COL is a JDIMENSION (unsigned int) argument, so the ABI doesn't
+       guarantee that the upper (unused) 32 bits of x3 are valid.  This
+       instruction ensures that those bits are set to zero. */
+    uxtw x3, w3
+
     /* vpush           {v8.4h - v15.4h}            ; not available */
-    sub             sp, sp, 208
+    sub             sp, sp, 64
-    str             x15, [sp], 16
+    mov             x9, sp
 
     /* Load constants */
     adr             TMP2, Ljsimd_idct_2x2_neon_consts
-    st1             {v4.8b, v5.8b, v6.8b, v7.8b}, [sp], 32
+    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [x9], 32
-    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
+    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [x9], 32
-    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
-    st1             {v16.8b, v17.8b, v18.8b, v19.8b}, [sp], 32
-    st1             {v21.8b, v22.8b}, [sp], 16
-    st1             {v24.8b, v25.8b, v26.8b, v27.8b}, [sp], 32
-    st1             {v30.8b, v31.8b}, [sp], 16
     ld1             {v14.4h}, [TMP2]
 
     /* Load all COEF_BLOCK into NEON registers with the following allocation:
@@ -1411,15 +1412,8 @@ asm_function jsimd_idct_2x2_neon
     st1             {v26.b}[1], [TMP2], 1
     st1             {v27.b}[5], [TMP2], 1
 
-    sub             sp, sp, #208
-    ldr             x15, [sp], 16
-    ld1             {v4.8b, v5.8b, v6.8b, v7.8b}, [sp], 32
     ld1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
     ld1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
-    ld1             {v16.8b, v17.8b, v18.8b, v19.8b}, [sp], 32
-    ld1             {v21.8b, v22.8b}, [sp], 16
-    ld1             {v24.8b, v25.8b, v26.8b, v27.8b}, [sp], 32
-    ld1             {v30.8b, v31.8b}, [sp], 16
     blr             x30
 
     .unreq          DCT_TABLE
@@ -1688,24 +1682,24 @@ asm_function jsimd_ycc_\colorid\()_convert_neon
 .else
 asm_function jsimd_ycc_\colorid\()_convert_neon_slowst3
 .endif
-    OUTPUT_WIDTH    .req x0
+    OUTPUT_WIDTH    .req w0
     INPUT_BUF       .req x1
-    INPUT_ROW       .req x2
+    INPUT_ROW       .req w2
     OUTPUT_BUF      .req x3
-    NUM_ROWS        .req x4
+    NUM_ROWS        .req w4
 
     INPUT_BUF0      .req x5
     INPUT_BUF1      .req x6
     INPUT_BUF2      .req x1
 
     RGB             .req x7
-    Y               .req x8
+    Y               .req x9
-    U               .req x9
+    U               .req x10
-    V               .req x10
+    V               .req x11
-    N               .req x15
+    N               .req w15
 
-    sub             sp, sp, 336
+    sub             sp, sp, 64
-    str             x15, [sp], 16
+    mov             x9, sp
 
     /* Load constants to d1, d2, d3 (v0.4h is just used for padding) */
     .if \fast_st3 == 1
@@ -1715,23 +1709,11 @@ asm_function jsimd_ycc_\colorid\()_convert_neon_slowst3
     .endif
 
     /* Save NEON registers */
-    st1             {v0.8b, v1.8b, v2.8b, v3.8b}, [sp], 32
+    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [x9], 32
-    st1             {v4.8b, v5.8b, v6.8b, v7.8b}, [sp], 32
+    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [x9], 32
-    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
-    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
-    st1             {v16.8b, v17.8b, v18.8b, v19.8b}, [sp], 32
-    st1             {v20.8b, v21.8b, v22.8b, v23.8b}, [sp], 32
-    st1             {v24.8b, v25.8b, v26.8b, v27.8b}, [sp], 32
-    st1             {v28.8b, v29.8b, v30.8b, v31.8b}, [sp], 32
     ld1             {v0.4h, v1.4h}, [x15], 16
     ld1             {v2.8h}, [x15]
 
-    /* Save ARM registers and handle input arguments */
-    /* push            {x4, x5, x6, x7, x8, x9, x10, x30} */
-    stp             x4, x5, [sp], 16
-    stp             x6, x7, [sp], 16
-    stp             x8, x9, [sp], 16
-    stp             x10, x30, [sp], 16
     ldr             INPUT_BUF0, [INPUT_BUF]
     ldr             INPUT_BUF1, [INPUT_BUF, #8]
     ldr             INPUT_BUF2, [INPUT_BUF, #16]
@@ -1745,11 +1727,10 @@ asm_function jsimd_ycc_\colorid\()_convert_neon_slowst3
     cmp             NUM_ROWS, #1
     b.lt            9f
 0:
-    lsl             x16, INPUT_ROW, #3
+    ldr             Y, [INPUT_BUF0, INPUT_ROW, uxtw #3]
-    ldr             Y, [INPUT_BUF0, x16]
+    ldr             U, [INPUT_BUF1, INPUT_ROW, uxtw #3]
-    ldr             U, [INPUT_BUF1, x16]
     mov             N, OUTPUT_WIDTH
-    ldr             V, [INPUT_BUF2, x16]
+    ldr             V, [INPUT_BUF2, INPUT_ROW, uxtw #3]
     add             INPUT_ROW, INPUT_ROW, #1
     ldr             RGB, [OUTPUT_BUF], #8
 
@@ -1799,21 +1780,8 @@ asm_function jsimd_ycc_\colorid\()_convert_neon_slowst3
     b.gt            0b
 9:
     /* Restore all registers and return */
-    sub             sp, sp, #336
-    ldr             x15, [sp], 16
-    ld1             {v0.8b, v1.8b, v2.8b, v3.8b}, [sp], 32
-    ld1             {v4.8b, v5.8b, v6.8b, v7.8b}, [sp], 32
     ld1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
     ld1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
-    ld1             {v16.8b, v17.8b, v18.8b, v19.8b}, [sp], 32
-    ld1             {v20.8b, v21.8b, v22.8b, v23.8b}, [sp], 32
-    ld1             {v24.8b, v25.8b, v26.8b, v27.8b}, [sp], 32
-    ld1             {v28.8b, v29.8b, v30.8b, v31.8b}, [sp], 32
-    /* pop             {r4, r5, r6, r7, r8, r9, r10, pc} */
-    ldp             x4, x5, [sp], 16
-    ldp             x6, x7, [sp], 16
-    ldp             x8, x9, [sp], 16
-    ldp             x10, x30, [sp], 16
     br              x30
     .unreq          OUTPUT_WIDTH
     .unreq          INPUT_ROW
@@ -2054,8 +2022,8 @@ asm_function jsimd_\colorid\()_ycc_convert_neon_slowld3
     OUTPUT_WIDTH    .req w0
     INPUT_BUF       .req x1
     OUTPUT_BUF      .req x2
-    OUTPUT_ROW      .req x3
+    OUTPUT_ROW      .req w3
-    NUM_ROWS        .req x4
+    NUM_ROWS        .req w4
 
     OUTPUT_BUF0     .req x5
     OUTPUT_BUF1     .req x6
@@ -2082,17 +2050,18 @@ asm_function jsimd_\colorid\()_ycc_convert_neon_slowld3
 
     /* Save NEON registers */
     sub             sp, sp, #64
-    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
+    mov             x9, sp
-    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
+    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [x9], 32
+    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [x9], 32
 
     /* Outer loop over scanlines */
     cmp             NUM_ROWS, #1
     b.lt            9f
 0:
-    ldr             Y, [OUTPUT_BUF0, OUTPUT_ROW, lsl #3]
+    ldr             Y, [OUTPUT_BUF0, OUTPUT_ROW, uxtw #3]
-    ldr             U, [OUTPUT_BUF1, OUTPUT_ROW, lsl #3]
+    ldr             U, [OUTPUT_BUF1, OUTPUT_ROW, uxtw #3]
     mov             N, OUTPUT_WIDTH
-    ldr             V, [OUTPUT_BUF2, OUTPUT_ROW, lsl #3]
+    ldr             V, [OUTPUT_BUF2, OUTPUT_ROW, uxtw #3]
     add             OUTPUT_ROW, OUTPUT_ROW, #1
     ldr             RGB, [INPUT_BUF], #8
 
@@ -2136,7 +2105,6 @@ asm_function jsimd_\colorid\()_ycc_convert_neon_slowld3
     b.gt            0b
 9:
     /* Restore all registers and return */
-    sub             sp, sp, #64
     ld1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
     ld1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
     br              x30
@@ -2199,6 +2167,11 @@ asm_function jsimd_convsamp_neon
     TMP8            .req x4
     TMPDUP          .req w3
 
+    /* START_COL is a JDIMENSION (unsigned int) argument, so the ABI doesn't
+       guarantee that the upper (unused) 32 bits of x1 are valid.  This
+       instruction ensures that those bits are set to zero. */
+    uxtw x1, w1
+
     mov             TMPDUP, #128
     ldp             TMP1, TMP2, [SAMPLE_DATA], 16
     ldp             TMP3, TMP4, [SAMPLE_DATA], 16
@@ -2335,8 +2308,9 @@ asm_function jsimd_fdct_islow_neon
 
     /* Save NEON registers */
     sub             sp, sp, #64
-    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
+    mov             x10, sp
-    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
+    st1             {v8.8b, v9.8b, v10.8b, v11.8b}, [x10], 32
+    st1             {v12.8b, v13.8b, v14.8b, v15.8b}, [x10], 32
 
     /* Load all DATA into NEON registers with the following allocation:
      *       0 1 2 3 | 4 5 6 7
@@ -2566,7 +2540,6 @@ asm_function jsimd_fdct_islow_neon
     st1             {v20.8h, v21.8h, v22.8h, v23.8h}, [DATA]
 
     /* Restore NEON registers */
-    sub             sp, sp, #64
     ld1             {v8.8b, v9.8b, v10.8b, v11.8b}, [sp], 32
     ld1             {v12.8b, v13.8b, v14.8b, v15.8b}, [sp], 32
 
@@ -3080,7 +3053,7 @@ asm_function jsimd_huff_encode_one_block_neon_slowtbl
     sub             sp, sp, 272
     sub             BUFFER, BUFFER, #0x1    /* BUFFER=buffer-- */
     /* Save ARM registers */
-    stp             x19, x20, [sp], 16
+    stp             x19, x20, [sp]
 .if \fast_tbl == 1
     adr             x15, Ljsimd_huff_encode_one_block_neon_consts
 .else
@@ -3294,7 +3267,7 @@ asm_function jsimd_huff_encode_one_block_neon_slowtbl
     and             v18.16b, v18.16b, v23.16b
       add             x3, x4, #0x400           /* r1 = dctbl->ehufsi */
     and             v20.16b, v20.16b, v23.16b
-      add             x15, sp, #0x80           /* x15 = t2 */
+      add             x15, sp, #0x90           /* x15 = t2 */
     and             v22.16b, v22.16b, v23.16b
       ldr             w10, [x4, x12, lsl #2]
     addp            v16.16b, v16.16b, v18.16b
@@ -3317,7 +3290,7 @@ asm_function jsimd_huff_encode_one_block_neon_slowtbl
     rbit            x9, x9             /* x9 = index0 */
     ldrb            w14, [x4, #0xf0]   /* x14 = actbl->ehufsi[0xf0] */
     cmp             w12, #(64-8)
-    mov             x11, sp
+    add             x11, sp, #16
     b.lt            4f
     cbz             x9, 6f
     st1             {v0.8h, v1.8h, v2.8h, v3.8h}, [x11], #64
@@ -3421,7 +3394,7 @@ asm_function jsimd_huff_encode_one_block_neon_slowtbl
     put_bits        x3, x11
     cbnz            x9, 1b
 6:
-    add             x13, sp, #0xfe
+    add             x13, sp, #0x10e
     cmp             x15, x13
     b.hs            1f
     ldr             w12, [x5]
@@ -3429,7 +3402,6 @@ asm_function jsimd_huff_encode_one_block_neon_slowtbl
     checkbuf47
     put_bits        x12, x14
 1:
-    sub             sp, sp, 16
     str             PUT_BUFFER, [x0, #0x10]
     str             PUT_BITSw, [x0, #0x18]
     ldp             x19, x20, [sp], 16

simd/jsimd_mips.c

@@ -2,7 +2,7 @@
  * jsimd_mips.c
  *
  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
- * Copyright (C) 2009-2011, 2014, D. R. Commander.
+ * Copyright (C) 2009-2011, 2014, 2016, D. R. Commander.
  * Copyright (C) 2013-2014, MIPS Technologies, Inc., California.
  * Copyright (C) 2015, Matthieu Darbois.
  *
@@ -77,6 +77,14 @@ init_simd (void)
   if (!parse_proc_cpuinfo("MIPS 74K"))
     return;
 #endif
+
+  /* Force different settings through environment variables */
+  env = getenv("JSIMD_FORCEDSPR2");
+  if ((env != NULL) && (strcmp(env, "1") == 0))
+    simd_support = JSIMD_MIPS_DSPR2;
+  env = getenv("JSIMD_FORCENONE");
+  if ((env != NULL) && (strcmp(env, "1") == 0))
+    simd_support = 0;
 }
 
 static const int mips_idct_ifast_coefs[4] = {

simd/jsimd_powerpc.c

@@ -2,7 +2,7 @@
  * jsimd_powerpc.c
  *
  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
- * Copyright (C) 2009-2011, 2014-2015, D. R. Commander.
+ * Copyright (C) 2009-2011, 2014-2016, D. R. Commander.
  * Copyright (C) 2015, Matthieu Darbois.
  *
  * Based on the x86 SIMD extension for IJG JPEG library,
@@ -22,19 +22,106 @@
 #include "../jsimddct.h"
 #include "jsimd.h"
 
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
 static unsigned int simd_support = ~0;
 
+#if defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
+
+#define SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT (1024 * 1024)
+
+LOCAL(int)
+check_feature (char *buffer, char *feature)
+{
+  char *p;
+  if (*feature == 0)
+    return 0;
+  if (strncmp(buffer, "cpu", 3) != 0)
+    return 0;
+  buffer += 3;
+  while (isspace(*buffer))
+    buffer++;
+
+  /* Check if 'feature' is present in the buffer as a separate word */
+  while ((p = strstr(buffer, feature))) {
+    if (p > buffer && !isspace(*(p - 1))) {
+      buffer++;
+      continue;
+    }
+    p += strlen(feature);
+    if (*p != 0 && !isspace(*p)) {
+      buffer++;
+      continue;
+    }
+    return 1;
+  }
+  return 0;
+}
+
+LOCAL(int)
+parse_proc_cpuinfo (int bufsize)
+{
+  char *buffer = (char *)malloc(bufsize);
+  FILE *fd;
+  simd_support = 0;
+
+  if (!buffer)
+    return 0;
+
+  fd = fopen("/proc/cpuinfo", "r");
+  if (fd) {
+    while (fgets(buffer, bufsize, fd)) {
+      if (!strchr(buffer, '\n') && !feof(fd)) {
+        /* "impossible" happened - insufficient size of the buffer! */
+        fclose(fd);
+        free(buffer);
+        return 0;
+      }
+      if (check_feature(buffer, "altivec"))
+        simd_support |= JSIMD_ALTIVEC;
+    }
+    fclose(fd);
+  }
+  free(buffer);
+  return 1;
+}
+
+#endif
+
+/*
+ * Check what SIMD accelerations are supported.
+ *
+ * FIXME: This code is racy under a multi-threaded environment.
+ */
 LOCAL(void)
 init_simd (void)
 {
   char *env = NULL;
+#if !defined(__ALTIVEC__) && (defined(__linux__) || defined(ANDROID) || defined(__ANDROID__))
+  int bufsize = 1024; /* an initial guess for the line buffer size limit */
+#endif
 
   if (simd_support != ~0U)
     return;
 
-  simd_support = JSIMD_ALTIVEC;
+  simd_support = 0;
+
+#if defined(__ALTIVEC__) || defined(__APPLE__)
+  simd_support |= JSIMD_ALTIVEC;
+#elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
+  while (!parse_proc_cpuinfo(bufsize)) {
+    bufsize *= 2;
+    if (bufsize > SOMEWHAT_SANE_PROC_CPUINFO_SIZE_LIMIT)
+      break;
+  }
+#endif
 
   /* Force different settings through environment variables */
+  env = getenv("JSIMD_FORCEALTIVEC");
+  if ((env != NULL) && (strcmp(env, "1") == 0))
+    simd_support = JSIMD_ALTIVEC;
   env = getenv("JSIMD_FORCENONE");
   if ((env != NULL) && (strcmp(env, "1") == 0))
     simd_support = 0;

tjbench.c

@@ -248,7 +248,8 @@ int decomp(unsigned char *srcbuf, unsigned char **jpegbuf,
 					int y=(int)((double)srcbuf[rindex]*0.299
 						+ (double)srcbuf[gindex]*0.587
 						+ (double)srcbuf[bindex]*0.114 + 0.5);
-					if(y>255) y=255;  if(y<0) y=0;
+					if(y>255) y=255;
+					if(y<0) y=0;
 					dstbuf[rindex]=abs(dstbuf[rindex]-y);
 					dstbuf[gindex]=abs(dstbuf[gindex]-y);
 					dstbuf[bindex]=abs(dstbuf[bindex]-y);
@@ -300,7 +301,8 @@ int fullTest(unsigned char *srcbuf, int w, int h, int subsamp, int jpegqual,
 
 	for(tilew=dotile? 8:w, tileh=dotile? 8:h; ; tilew*=2, tileh*=2)
 	{
-		if(tilew>w) tilew=w;  if(tileh>h) tileh=h;
+		if(tilew>w) tilew=w;
+		if(tileh>h) tileh=h;
 		ntilesw=(w+tilew-1)/tilew;  ntilesh=(h+tileh-1)/tileh;
 
 		if((jpegbuf=(unsigned char **)malloc(sizeof(unsigned char *)
@@ -447,7 +449,8 @@ int fullTest(unsigned char *srcbuf, int w, int h, int subsamp, int jpegqual,
 
 		for(i=0; i<ntilesw*ntilesh; i++)
 		{
-			if(jpegbuf[i]) tjFree(jpegbuf[i]);  jpegbuf[i]=NULL;
+			if(jpegbuf[i]) tjFree(jpegbuf[i]);
+			jpegbuf[i]=NULL;
 		}
 		free(jpegbuf);  jpegbuf=NULL;
 		free(jpegsize);  jpegsize=NULL;
@@ -465,7 +468,8 @@ int fullTest(unsigned char *srcbuf, int w, int h, int subsamp, int jpegqual,
 	{
 		for(i=0; i<ntilesw*ntilesh; i++)
 		{
-			if(jpegbuf[i]) tjFree(jpegbuf[i]);  jpegbuf[i]=NULL;
+			if(jpegbuf[i]) tjFree(jpegbuf[i]);
+			jpegbuf[i]=NULL;
 		}
 		free(jpegbuf);  jpegbuf=NULL;
 	}
@@ -532,7 +536,8 @@ int decompTest(char *filename)
 
 	for(tilew=dotile? 16:w, tileh=dotile? 16:h; ; tilew*=2, tileh*=2)
 	{
-		if(tilew>w) tilew=w;  if(tileh>h) tileh=h;
+		if(tilew>w) tilew=w;
+		if(tileh>h) tileh=h;
 		ntilesw=(w+tilew-1)/tilew;  ntilesh=(h+tileh-1)/tileh;
 
 		if((jpegbuf=(unsigned char **)malloc(sizeof(unsigned char *)
@@ -692,7 +697,8 @@ int decompTest(char *filename)
 	{
 		for(i=0; i<ntilesw*ntilesh; i++)
 		{
-			if(jpegbuf[i]) tjFree(jpegbuf[i]);  jpegbuf[i]=NULL;
+			if(jpegbuf[i]) tjFree(jpegbuf[i]);
+			jpegbuf[i]=NULL;
 		}
 		free(jpegbuf);  jpegbuf=NULL;
 	}

turbojpeg.c

@@ -1,7 +1,5 @@
 /*
  * Copyright (C)2009-2016 D. R. Commander.  All Rights Reserved.
- * mozjpeg Modifications:
- * Copyright (C) 2014, Mozilla Corporation.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -219,8 +217,6 @@ static int setCompDefaults(struct jpeg_compress_struct *cinfo,
 	}
 
 	cinfo->input_components=tjPixelSize[pixelFormat];
-	if((env=getenv("TJ_REVERT"))!=NULL && strlen(env)>0 && !strcmp(env, "1"))
-		cinfo->master->compress_profile=JCP_FASTEST;
 	jpeg_set_defaults(cinfo);
 
 #ifndef NO_GETENV
@@ -262,10 +258,6 @@ static int setCompDefaults(struct jpeg_compress_struct *cinfo,
 		jpeg_simple_progression(cinfo);
 #endif
 
-	/* Set scan pattern again as colorspace might have changed */
-	if(cinfo->master->compress_profile == JCP_MAX_COMPRESSION)
-		jpeg_simple_progression(cinfo);
-
 	cinfo->comp_info[0].h_samp_factor=tjMCUWidth[subsamp]/8;
 	cinfo->comp_info[1].h_samp_factor=1;
 	cinfo->comp_info[2].h_samp_factor=1;
@@ -376,6 +368,29 @@ static int getSubsamp(j_decompress_ptr dinfo)
 					retval=i;  break;
 				}
 			}
+			/* Handle 4:2:2 and 4:4:0 images whose sampling factors are specified
+			   in non-standard ways. */
+			if(dinfo->comp_info[0].h_samp_factor==2 &&
+				dinfo->comp_info[0].v_samp_factor==2 &&
+				(i==TJSAMP_422 || i==TJSAMP_440))
+			{
+				int match=0;
+				for(k=1; k<dinfo->num_components; k++)
+				{
+					int href=tjMCUHeight[i]/8, vref=tjMCUWidth[i]/8;
+					if(dinfo->jpeg_color_space==JCS_YCCK && k==3)
+					{
+						href=vref=2;
+					}
+					if(dinfo->comp_info[k].h_samp_factor==href
+						&& dinfo->comp_info[k].v_samp_factor==vref)
+						match++;
+				}
+				if(match==dinfo->num_components-1)
+				{
+					retval=i;  break;
+				}
+			}
 		}
 	}
 	return retval;
@@ -578,7 +593,8 @@ static tjhandle _tjInitCompress(tjinstance *this)
 	if(setjmp(this->jerr.setjmp_buffer))
 	{
 		/* If we get here, the JPEG code has signaled an error. */
-		if(this) free(this);  return NULL;
+		if(this) free(this);
+		return NULL;
 	}
 
 	jpeg_create_compress(&this->cinfo);
@@ -1239,7 +1255,8 @@ static tjhandle _tjInitDecompress(tjinstance *this)
 	if(setjmp(this->jerr.setjmp_buffer))
 	{
 		/* If we get here, the JPEG code has signaled an error. */
-		if(this) free(this);  return NULL;
+		if(this) free(this);
+		return NULL;
 	}
 
 	jpeg_create_decompress(&this->dinfo);

usage.txt

@@ -233,7 +233,12 @@ factor will visibly blur the image, however.
 
 Switches for wizards:
 
-        -baseline       Create baseline JPEG file (disable progressive coding)
+        -baseline       Force baseline-compatible quantization tables to be
+                        generated.  This clamps quantization values to 8 bits
+                        even at low quality settings.  (This switch is poorly
+                        named, since it does not ensure that the output is
+                        actually baseline JPEG.  For example, you can use
+                        -baseline and -progressive together.)
 
         -qtables file   Use the quantization tables given in the specified
                         text file.

win/jpeg62-memsrcdst.def

@@ -104,13 +104,3 @@ EXPORTS
 	jpeg_mem_src @ 103 ; 
 	jpeg_skip_scanlines @ 104 ; 
 	jpeg_crop_scanline @ 105 ; 
-	jpeg_c_bool_param_supported @ 200 ; 
-	jpeg_c_set_bool_param @ 201 ; 
-	jpeg_c_get_bool_param @ 202 ; 
-	jpeg_c_float_param_supported @ 203 ; 
-	jpeg_c_set_float_param @ 204 ; 
-	jpeg_c_get_float_param @ 205 ; 
-	jpeg_c_int_param_supported @ 206 ; 
-	jpeg_c_set_int_param @ 207 ; 
-	jpeg_c_get_int_param @ 208 ; 
-	jpeg_float_quality_scaling @ 1000 ; 

win/jpeg62.def

@@ -102,13 +102,3 @@ EXPORTS
 	jzero_far @ 101 ; 
 	jpeg_skip_scanlines @ 102 ; 
 	jpeg_crop_scanline @ 103 ; 
-	jpeg_c_bool_param_supported @ 200 ; 
-	jpeg_c_set_bool_param @ 201 ; 
-	jpeg_c_get_bool_param @ 202 ; 
-	jpeg_c_float_param_supported @ 203 ; 
-	jpeg_c_set_float_param @ 204 ; 
-	jpeg_c_get_float_param @ 205 ; 
-	jpeg_c_int_param_supported @ 206 ; 
-	jpeg_c_set_int_param @ 207 ; 
-	jpeg_c_get_int_param @ 208 ; 
-	jpeg_float_quality_scaling @ 1000 ; 

win/jpeg7-memsrcdst.def

@@ -104,13 +104,3 @@ EXPORTS
 	jzero_far @ 103 ; 
 	jpeg_mem_dest @ 104 ; 
 	jpeg_mem_src @ 105 ; 
-	jpeg_c_bool_param_supported @ 200 ; 
-	jpeg_c_set_bool_param @ 201 ; 
-	jpeg_c_get_bool_param @ 202 ; 
-	jpeg_c_float_param_supported @ 203 ; 
-	jpeg_c_set_float_param @ 204 ; 
-	jpeg_c_get_float_param @ 205 ; 
-	jpeg_c_int_param_supported @ 206 ; 
-	jpeg_c_set_int_param @ 207 ; 
-	jpeg_c_get_int_param @ 208 ; 
-	jpeg_float_quality_scaling @ 1000 ; 

win/jpeg7.def

@@ -104,13 +104,3 @@ EXPORTS
 	jzero_far @ 103 ; 
 	jpeg_skip_scanlines @ 104 ; 
 	jpeg_crop_scanline @ 105 ; 
-	jpeg_c_bool_param_supported @ 200 ; 
-	jpeg_c_set_bool_param @ 201 ; 
-	jpeg_c_get_bool_param @ 202 ; 
-	jpeg_c_float_param_supported @ 203 ; 
-	jpeg_c_set_float_param @ 204 ; 
-	jpeg_c_get_float_param @ 205 ; 
-	jpeg_c_int_param_supported @ 206 ; 
-	jpeg_c_set_int_param @ 207 ; 
-	jpeg_c_get_int_param @ 208 ; 
-	jpeg_float_quality_scaling @ 1000 ; 

win/jpeg8.def

@@ -107,13 +107,3 @@ EXPORTS
 	jzero_far @ 106 ; 
 	jpeg_skip_scanlines @ 107 ; 
 	jpeg_crop_scanline @ 108 ; 
-	jpeg_c_bool_param_supported @ 200 ; 
-	jpeg_c_set_bool_param @ 201 ; 
-	jpeg_c_get_bool_param @ 202 ; 
-	jpeg_c_float_param_supported @ 203 ; 
-	jpeg_c_set_float_param @ 204 ; 
-	jpeg_c_get_float_param @ 205 ; 
-	jpeg_c_int_param_supported @ 206 ; 
-	jpeg_c_set_int_param @ 207 ; 
-	jpeg_c_get_int_param @ 208 ; 
-	jpeg_float_quality_scaling @ 1000 ; 

yuvjpeg.c

@@ -1,268 +0,0 @@
-/*
- * Written by Josh Aas and Tim Terriberry
- * Copyright (c) 2013, Mozilla Corporation
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. Neither the name of the Mozilla Corporation nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-/* Expects 4:2:0 YCbCr */
-
-/* gcc -std=c99 yuvjpeg.c -I/opt/local/include/ -L/opt/local/lib/ -ljpeg -o yuvjpeg */
-
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-
-#include "jpeglib.h"
-
-void extend_edge(JSAMPLE *image, int width, int height, unsigned char *yuv,
- int luma_width, int luma_height, int chroma_width, int chroma_height) {
-  int x;
-  int y;
-
-  for (y = 0; y < luma_height; y++) {
-    for (x = 0; x < luma_width; x++) {
-      image[width*y + x] = yuv[luma_width*y + x];
-    }
-  }
-  for (y = 0; y < chroma_height; y++) {
-    for (x = 0; x < chroma_width; x++) {
-      image[width*height + (width/2)*y + x] =
-       yuv[luma_width*luma_height + chroma_width*y + x];
-      image[width*height + (width/2)*((height/2) + y) + x] =
-       yuv[luma_width*luma_height + chroma_width*(chroma_height + y) + x];
-    }
-  }
-
-  /* Perform right edge extension. */
-  for (y = 0; y < luma_height; y++) {
-    for (x = luma_width; x < width; x++) {
-      image[width*y + x] = image[width*y + (x - 1)];
-    }
-  }
-  for (y = 0; y < chroma_height; y++) {
-    for (x = chroma_width; x < width/2; x++) {
-      image[width*height + (width/2)*y + x] =
-       image[width*height + (width/2)*y + (x - 1)];
-      image[width*height + (width/2)*((height/2) + y) + x] =
-       image[width*height + (width/2)*((height/2) + y) + (x - 1)];
-    }
-  }
-
-  /* Perform bottom edge extension. */
-  for (x = 0; x < width; x++) {
-    for (y = luma_height; y < height; y++) {
-      image[width*y + x] = image[width*(y - 1) + x];
-    }
-  }
-  for (x = 0; x < width/2; x++) {
-    for (y = chroma_height; y < height/2; y++) {
-      image[width*height + (width/2)*y + x] =
-       image[width*height + (width/2)*(y - 1) + x];
-      image[width*height + (width/2)*((height/2) + y) + x] =
-       image[width*height + (width/2)*((height/2) + (y - 1)) + x];
-    }
-  }
-}
-
-int main(int argc, char *argv[]) {
-  long quality;
-  int matches;
-  int luma_width;
-  int luma_height;
-  int chroma_width;
-  int chroma_height;
-  int frame_width;
-  int frame_height;
-  const char *yuv_path;
-  const char *jpg_path;
-  FILE *yuv_fd;
-  size_t yuv_size;
-  unsigned char *yuv_buffer;
-  JSAMPLE *jpg_buffer;
-  struct jpeg_compress_struct cinfo;
-  struct jpeg_error_mgr jerr;
-  FILE *jpg_fd;
-  JSAMPROW yrow_pointer[16];
-  JSAMPROW cbrow_pointer[8];
-  JSAMPROW crrow_pointer[8];
-  JSAMPROW *plane_pointer[3];
-  int y;
-
-  if (argc != 5) {
-    fprintf(stderr, "Required arguments:\n");
-    fprintf(stderr, "1. JPEG quality value, 0-100\n");
-    fprintf(stderr, "2. Image size (e.g. '512x512')\n");
-    fprintf(stderr, "3. Path to YUV input file\n");
-    fprintf(stderr, "4. Path to JPG output file\n");
-    return 1;
-  }
-
-  errno = 0;
-
-  quality = strtol(argv[1], NULL, 10);
-  if (errno != 0 || quality < 0 || quality > 100) {
-    fprintf(stderr, "Invalid JPEG quality value!\n");
-    return 1;
-  }
-
-  matches = sscanf(argv[2], "%dx%d", &luma_width, &luma_height);
-  if (matches != 2) {
-    fprintf(stderr, "Invalid image size input!\n");
-    return 1;
-  }
-  if (luma_width <= 0 || luma_height <= 0) {
-    fprintf(stderr, "Invalid image size input!\n");
-    return 1;
-  }
-
-  chroma_width = (luma_width + 1) >> 1;
-  chroma_height = (luma_height + 1) >> 1;
-
-  /* Will check these for validity when opening via 'fopen'. */
-  yuv_path = argv[3];
-  jpg_path = argv[4];
-
-  yuv_fd = fopen(yuv_path, "r");
-  if (!yuv_fd) {
-    fprintf(stderr, "Invalid path to YUV file!\n");
-    return 1;
-  }
-
-  fseek(yuv_fd, 0, SEEK_END);
-  yuv_size = ftell(yuv_fd);
-  fseek(yuv_fd, 0, SEEK_SET);
-
-  /* Check that the file size matches 4:2:0 yuv. */
-  if (yuv_size !=
-   (size_t)luma_width*luma_height + 2*chroma_width*chroma_height) {
-    fclose(yuv_fd);
-    fprintf(stderr, "Unexpected input format!\n");
-    return 1;
-  }
-
-  yuv_buffer = malloc(yuv_size);
-  if (!yuv_buffer) {
-    fclose(yuv_fd);
-    fprintf(stderr, "Memory allocation failure!\n");
-    return 1;
-  }
-
-  if (fread(yuv_buffer, yuv_size, 1, yuv_fd) != 1) {
-    fprintf(stderr, "Error reading yuv file\n");
-  };
-
-  fclose(yuv_fd);
-
-  frame_width = (luma_width + (16 - 1)) & ~(16 - 1);
-  frame_height = (luma_height + (16 - 1)) & ~(16 - 1);
-
-  jpg_buffer =
-   malloc(frame_width*frame_height + 2*(frame_width/2)*(frame_height/2));
-  if (!jpg_buffer) {
-    free(yuv_buffer);
-    fprintf(stderr, "Memory allocation failure!\n");
-    return 1;
-  }
-
-  extend_edge(jpg_buffer, frame_width, frame_height,
-   yuv_buffer, luma_width, luma_height, chroma_width, chroma_height);
-
-  free(yuv_buffer);
-
-  cinfo.err = jpeg_std_error(&jerr);
-  jpeg_create_compress(&cinfo);
-
-  jpg_fd = fopen(jpg_path, "wb");
-  if (!jpg_fd) {    
-    free(jpg_buffer);
-    fprintf(stderr, "Invalid path to JPEG file!\n");
-    return 1;
-  }
-
-  jpeg_stdio_dest(&cinfo, jpg_fd);
-
-  cinfo.image_width = luma_width;
-  cinfo.image_height = luma_height;
-  cinfo.input_components = 3;
-
-  cinfo.in_color_space = JCS_YCbCr;
-  jpeg_set_defaults(&cinfo);
-
-  cinfo.raw_data_in = TRUE;
-
-  cinfo.comp_info[0].h_samp_factor = 2;
-  cinfo.comp_info[0].v_samp_factor = 2;
-  cinfo.comp_info[0].dc_tbl_no = 0;
-  cinfo.comp_info[0].ac_tbl_no = 0;
-  cinfo.comp_info[0].quant_tbl_no = 0;
-
-  cinfo.comp_info[1].h_samp_factor = 1;
-  cinfo.comp_info[1].v_samp_factor = 1;
-  cinfo.comp_info[1].dc_tbl_no = 1;
-  cinfo.comp_info[1].ac_tbl_no = 1;
-  cinfo.comp_info[1].quant_tbl_no = 1;
-
-  cinfo.comp_info[2].h_samp_factor = 1;
-  cinfo.comp_info[2].v_samp_factor = 1;
-  cinfo.comp_info[2].dc_tbl_no = 1;
-  cinfo.comp_info[2].ac_tbl_no = 1;
-  cinfo.comp_info[2].quant_tbl_no = 1;
-
-  jpeg_set_quality(&cinfo, quality, TRUE);
-  cinfo.optimize_coding = TRUE;
-
-  jpeg_start_compress(&cinfo, TRUE);
-
-  plane_pointer[0] = yrow_pointer;
-  plane_pointer[1] = cbrow_pointer;
-  plane_pointer[2] = crrow_pointer;
-
-  while (cinfo.next_scanline < cinfo.image_height) {
-    int scanline;
-    scanline = cinfo.next_scanline;
-
-    for (y = 0; y < 16; y++) {
-      yrow_pointer[y] = &jpg_buffer[frame_width*(scanline + y)];
-    }
-    for (y = 0; y < 8; y++) {
-      cbrow_pointer[y] = &jpg_buffer[frame_width*frame_height +
-       (frame_width/2)*((scanline/2) + y)];
-      crrow_pointer[y] = &jpg_buffer[frame_width*frame_height +
-       (frame_width/2)*(frame_height/2) + (frame_width/2)*((scanline/2) + y)];
-    }
-    jpeg_write_raw_data(&cinfo, plane_pointer, 16);
-  }
-
-  jpeg_finish_compress(&cinfo);
-  jpeg_destroy_compress(&cinfo);
-
-  free(jpg_buffer);
-  fclose(jpg_fd);
-
-  return 0;
-}