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1 Commits
v3.2 ... jpeg-9c

Author SHA1 Message Date
Guido Vollbeding
96e4e7eb60 The Independent JPEG Group's JPEG software v9c 2020-10-23 09:56:39 -05:00
550 changed files with 77521 additions and 114664 deletions
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7
.gitauthors
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@@ -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>

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.gitignore vendored
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.DS_Store
Makefile.in
Makefile
/CMakeFiles
/autom4te.cache
/aclocal.m4
/compile
/configure
/depcomp
/install-sh
/libtool
/missing
/stamp-h*
/java/classnoinst.stamp
/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

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BUILDING.md
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Building on Un*x Platforms (including Cygwin and OS X)
=======================================================
Build Requirements
------------------
- 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)
* If using 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.)
* If using NASM, 2.00 or later is required for an x86-64 build.
* If using NASM, 2.07 or later (except 2.11.08) is required for an x86-64
Mac build (2.11.08 does not work properly with libjpeg-turbo's x86-64 SIMD
code when building macho64 objects.) NASM or YASM can be obtained from
[MacPorts](http://www.macports.org/).
The binary RPMs released by the NASM project do not work on older Linux
systems, such as Red Hat Enterprise Linux 4. On such systems, you can
easily build and install NASM from a source RPM by downloading one of the
SRPMs from
<http://www.nasm.us/pub/nasm/releasebuilds>
and executing the following as root:
ARCH=`uname -m`
rpmbuild --rebuild nasm-{version}.src.rpm
rpm -Uvh /usr/src/redhat/RPMS/$ARCH/nasm-{version}.$ARCH.rpm
NOTE: the NASM build will fail if texinfo is not installed.
- GCC v4.1 (or later) or clang recommended for best performance
- 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 10.6, it will
be necessary to install the Java Developer Package, which can be downloaded
from <http://developer.apple.com/downloads> (Apple ID required.) For other
systems, you can obtain the Oracle Java Development Kit from
<http://www.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 libjpeg-turbo source
directory. You can create multiple independent binary directories, in which
different versions of libjpeg-turbo can be built from the same source tree
using different compilers or settings. In the sections below,
*{build_directory}* refers to the binary directory, whereas
*{source_directory}* refers to the libjpeg-turbo source directory. For in-tree
builds, these directories are the same.
Building libjpeg-turbo
----------------------
The following procedure will build libjpeg-turbo on Linux, FreeBSD, Cygwin, and
Solaris/x86 systems (on Solaris, this generates a 32-bit library. See below
for 64-bit build instructions.)
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
libjpeg-turbo 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 62.1.0, 7.1.0, or 8.0.2, 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
libjpeg-turbo that is API/ABI-compatible with libjpeg v7. Add `--with-jpeg8`
to the `configure` command to build a version of libjpeg-turbo that is
API/ABI-compatible with libjpeg v8. See [README.md](README.md) 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 libjpeg-turbo that lacks the
`jpeg_mem_src()` and `jpeg_mem_dest()` functions. These functions were not
part of the original libjpeg v6b and v7 APIs, so removing them ensures strict
conformance with those APIs. See [README.md](README.md) for more information.
### Arithmetic Coding Support
Since the patent on arithmetic coding has expired, this functionality has been
included in this release of libjpeg-turbo. libjpeg-turbo's implementation is
based on the implementation in libjpeg v8, but it works when emulating libjpeg
v7 or v6b as well. The default is to enable both arithmetic encoding and
decoding, but those who have philosophical objections to arithmetic coding can
add `--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](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 libjpeg-turbo
------------------------
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/libjpeg-turbo/include and the library
files in /opt/libjpeg-turbo/lib32 (32-bit) or /opt/libjpeg-turbo/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 libjpeg-turbo into
a non-system directory and manipulate the `LD_LIBRARY_PATH` or create symlinks
to force applications to use libjpeg-turbo instead of libjpeg. See
[README.md](README.md) 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='-mmacosx-version-min=10.5 -O3' \
LDFLAGS='-mmacosx-version-min=10.5'
to the `configure` command line. NASM 2.07 or later from MacPorts must be
installed.
### 32-bit Backward-Compatible Build on OS X
Add
--host i686-apple-darwin \
CFLAGS='-mmacosx-version-min=10.5 -O3 -m32' \
LDFLAGS='-mmacosx-version-min=10.5 -m32'
to the `configure` command line.
### 64-bit 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. libjpeg-turbo will automatically be built
with the maximum optimization level (-xO5) unless you override `CFLAGS`.
To build a 64-bit version of libjpeg-turbo 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 libjpeg-turbo can use ARM NEON SIMD instructions to accelerate
JPEG compression/decompression by approximately 2-4x on ARMv7 and later
platforms. If libjpeg-turbo 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 libjpeg-turbo 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
libjpeg-turbo 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
*All Xcode versions*
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 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 $IOS_CFLAGS"
to the `configure` command line.
#### ARM 32-bit Build (Xcode 5.0.x and later, Clang)
Set the following shell variables for simplicity:
IOS_PLATFORMDIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
IOS_SYSROOT=$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) v2.8.11 or later
- [NASM](http://www.nasm.us) or [YASM](http://yasm.tortall.net)
* If using NASM, 0.98 or later is required for an x86 build.
* If using NASM, 2.05 or later is required for an x86-64 build.
* nasm.exe/yasm.exe should be in your `PATH`.
- Microsoft Visual C++ 2005 or later
If you don't already have Visual C++, then the easiest way to get it is by
installing the
[Windows SDK](http://msdn.microsoft.com/en-us/windows/bb980924.aspx).
The Windows SDK includes both 32-bit and 64-bit Visual C++ compilers and
everything necessary to build libjpeg-turbo.
* You can also use Microsoft Visual Studio Express/Community Edition, which
is a free download. (NOTE: versions prior to 2012 can only be used to
build 32-bit code.)
* If you intend to build libjpeg-turbo from the command line, then add the
appropriate compiler and SDK directories to the `INCLUDE`, `LIB`, and
`PATH` environment variables. This is generally accomplished by
executing `vcvars32.bat` or `vcvars64.bat` and `SetEnv.cmd`.
`vcvars32.bat` and `vcvars64.bat` are part of Visual C++ and are located in
the same directory as the compiler. `SetEnv.cmd` is part of the Windows
SDK. You can pass optional arguments to `SetEnv.cmd` to specify a 32-bit
or 64-bit build environment.
... OR ...
- MinGW
[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.
- 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 libjpeg-turbo source directory. You
can create multiple independent binary directories, in which different versions
of libjpeg-turbo can be built from the same source tree using different
compilers or settings. In the sections below, *{build_directory}* refers to
the binary directory, whereas *{source_directory}* refers to the libjpeg-turbo
source directory. For in-tree builds, these directories are the same.
Building libjpeg-turbo
----------------------
### 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 libjpeg-turbo, depending
on which version of cl.exe is in the `PATH`.
The following files will be generated under *{build_directory}*:
**jpeg-static.lib**
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 libjpeg-turbo.
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
libjpeg-turbo that is API/ABI-compatible with libjpeg v7. Add `-DWITH_JPEG8=1`
to the `cmake` command line to build a version of libjpeg-turbo that is
API/ABI-compatible with libjpeg v8. See [README.md](README.md) for more
information 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 libjpeg-turbo that lacks the
`jpeg_mem_src()` and `jpeg_mem_dest()` functions. These functions were not
part of the original libjpeg v6b and v7 APIs, so removing them ensures strict
conformance with those APIs. See [README.md](README.md) for more information.
### Arithmetic Coding Support
Since the patent on arithmetic coding has expired, this functionality has been
included in this release of libjpeg-turbo. libjpeg-turbo's implementation is
based on the implementation in libjpeg v8, but it works when emulating libjpeg
v7 or v6b as well. The default is to enable both arithmetic encoding and
decoding, but those who have philosophical objections to arithmetic coding can
add `-DWITH_ARITH_ENC=0` or `-DWITH_ARITH_DEC=0` to the `cmake` command line to
disable encoding or decoding (respectively.)
### TurboJPEG Java Wrapper
Add `-DWITH_JAVA=1` to the `cmake` command line to incorporate an optional Java
Native Interface wrapper into the TurboJPEG shared library and build the Java
front-end classes to support it. This allows the TurboJPEG shared library to
be used directly from Java applications. See [java/README](java/README) for
more details.
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.) 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 libjpeg-turbo
------------------------
You can use the build system to install libjpeg-turbo 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:\libjpeg-turbo {source_directory}
nmake install
will install the header files in c:\libjpeg-turbo\include, the library files
in c:\libjpeg-turbo\lib, the DLL's in c:\libjpeg-turbo\bin, and the
documentation in c:\libjpeg-turbo\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 libjpeg-turbo 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 libjpeg-turbo 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}/i686-pc-mingw32-gcc \
cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
-DCMAKE_RC_COMPILER={mingw_binary_path}/i686-pc-mingw32-windres \
-DCMAKE_AR={mingw_binary_path}/i686-pc-mingw32-ar \
-DCMAKE_RANLIB={mingw_binary_path}/i686-pc-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 libjpeg-turbo, 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
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
libjpeg-turbo (see "Building libjpeg-turbo for iOS" above.) If you are
building an x86-64 version of libjpeg-turbo, you should configure a 32-bit
out-of-tree build as well. Next, build libjpeg-turbo 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 (libjpeg-turbo[-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 libjpeg-turbo 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 between libjpeg-turbo and libjpeg v6b. This
also invokes the TurboJPEG unit tests, which ensure that the colorspace
extensions, YUV encoding, decompression scaling, and other features of the
TurboJPEG C and Java APIs are working properly (and, by extension, that the
equivalent features of the underlying libjpeg API are also working.)
Invoking `make testclean` 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.

902
BUILDING.txt
View File

@@ -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.

917
CMakeLists.txt
View File

@@ -1,917 +0,0 @@
#
# Setup
#
cmake_minimum_required(VERSION 2.8.11)
# Use LINK_INTERFACE_LIBRARIES instead of INTERFACE_LINK_LIBRARIES
if(POLICY CMP0022)
cmake_policy(SET CMP0022 OLD)
endif()
project(mozjpeg C)
set(VERSION 3.2)
if(NOT WIN32)
message(FATAL_ERROR "Platform not supported by this build system. Use autotools instead.")
endif()
string(TIMESTAMP BUILD "%Y%m%d")
# This does nothing except when using MinGW. CMAKE_BUILD_TYPE has no meaning
# in Visual Studio, and it always defaults to Debug when using NMake.
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
message(STATUS "CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}")
# This only works if building from the command line. There is currently no way
# to set a variable's value based on the build type when using Visual Studio.
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
set(BUILD "${BUILD}d")
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_DEC "Include arithmetic decoding support" TRUE)
option(WITH_JPEG7 "Emulate libjpeg v7 API/ABI (this makes mozjpeg 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_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)
option(WITH_12BIT "Encode/decode JPEG images with 12-bit samples (implies WITH_SIMD=0 WITH_TURBOJPEG=0 WITH_ARITH_ENC=0 WITH_ARITH_DEC=0)" FALSE)
option(ENABLE_STATIC "Build static libraries" TRUE)
option(ENABLE_SHARED "Build shared libraries" TRUE)
if(WITH_12BIT)
set(WITH_SIMD FALSE)
set(WITH_TURBOJPEG FALSE)
set(WITH_JAVA FALSE)
set(WITH_ARITH_ENC FALSE)
set(WITH_ARITH_DEC FALSE)
set(BITS_IN_JSAMPLE 12)
message(STATUS "12-bit JPEG support enabled")
else()
set(BITS_IN_JSAMPLE 8)
endif()
if(WITH_JPEG8 OR WITH_JPEG7)
set(WITH_ARITH_ENC 1)
set(WITH_ARITH_DEC 1)
endif()
if(WITH_JPEG8)
set(WITH_MEM_SRCDST 1)
endif()
if(WITH_ARITH_ENC)
set(C_ARITH_CODING_SUPPORTED 1)
message(STATUS "Arithmetic encoding support enabled")
else()
message(STATUS "Arithmetic encoding support disabled")
endif()
if(WITH_ARITH_DEC)
set(D_ARITH_CODING_SUPPORTED 1)
message(STATUS "Arithmetic decoding support enabled")
else()
message(STATUS "Arithmetic decoding support disabled")
endif()
if(WITH_TURBOJPEG)
message(STATUS "TurboJPEG C wrapper enabled")
else()
message(STATUS "TurboJPEG C wrapper disabled")
endif()
if(WITH_JAVA)
message(STATUS "TurboJPEG Java wrapper enabled")
else()
message(STATUS "TurboJPEG Java wrapper disabled")
endif()
set(SO_AGE 0)
if(WITH_MEM_SRCDST)
set(SO_AGE 1)
endif()
set(JPEG_LIB_VERSION 62)
set(DLL_VERSION ${JPEG_LIB_VERSION})
set(FULLVERSION ${DLL_VERSION}.${SO_AGE}.0)
if(WITH_JPEG8)
set(JPEG_LIB_VERSION 80)
set(DLL_VERSION 8)
set(FULLVERSION ${DLL_VERSION}.0.2)
message(STATUS "Emulating libjpeg v8 API/ABI")
elseif(WITH_JPEG7)
set(JPEG_LIB_VERSION 70)
set(DLL_VERSION 7)
set(FULLVERSION ${DLL_VERSION}.${SO_AGE}.0)
message(STATUS "Emulating libjpeg v7 API/ABI")
endif(WITH_JPEG8)
if(WITH_MEM_SRCDST)
set(MEM_SRCDST_SUPPORTED 1)
message(STATUS "In-memory source/destination managers enabled")
else()
message(STATUS "In-memory source/destination managers disabled")
endif()
if(MSVC)
option(WITH_CRT_DLL
"Link all libjpeg-turbo libraries and executables with the C run-time DLL (msvcr*.dll) instead of the static C run-time library (libcmt*.lib.) The default is to use the C run-time DLL only with the libraries and executables that need it."
FALSE)
if(NOT WITH_CRT_DLL)
# Use the static C library for all build types
foreach(var CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${var} "${${var}}")
endif()
endforeach()
endif()
add_definitions(-W3 -wd4996)
endif()
# Detect whether compiler is 64-bit
if(MSVC AND CMAKE_CL_64)
set(SIMD_X86_64 1)
set(64BIT 1)
elseif(CMAKE_SIZEOF_VOID_P MATCHES 8)
set(SIMD_X86_64 1)
set(64BIT 1)
endif()
if(64BIT)
message(STATUS "64-bit build")
else()
message(STATUS "32-bit build")
endif()
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
if(MSVC)
set(CMAKE_INSTALL_PREFIX_DEFAULT ${CMAKE_PROJECT_NAME})
else()
set(CMAKE_INSTALL_PREFIX_DEFAULT ${CMAKE_PROJECT_NAME}-gcc)
endif()
if(64BIT)
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})"
FORCE)
endif()
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}")
string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_UC)
set(EFFECTIVE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
message(STATUS "Compiler flags = ${EFFECTIVE_C_FLAGS}")
set(EFFECTIVE_LD_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE_UC}}")
message(STATUS "Linker flags = ${EFFECTIVE_LD_FLAGS}")
if(WITH_JAVA)
find_package(Java)
find_package(JNI)
if(DEFINED JAVACFLAGS)
message(STATUS "Java compiler flags = ${JAVACFLAGS}")
endif()
endif()
#
# Targets
#
set(JPEG_SOURCES jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jcext.c
jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c
jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c jdatadst.c
jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c
jdmarker.c jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c
jerror.c jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c
jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c)
if(WITH_ARITH_ENC OR WITH_ARITH_DEC)
set(JPEG_SOURCES ${JPEG_SOURCES} jaricom.c)
endif()
if(WITH_ARITH_ENC)
set(JPEG_SOURCES ${JPEG_SOURCES} jcarith.c)
endif()
if(WITH_ARITH_DEC)
set(JPEG_SOURCES ${JPEG_SOURCES} jdarith.c)
endif()
if(WITH_SIMD)
add_definitions(-DWITH_SIMD)
add_subdirectory(simd)
if(SIMD_X86_64)
set(JPEG_SOURCES ${JPEG_SOURCES} simd/jsimd_x86_64.c)
else()
set(JPEG_SOURCES ${JPEG_SOURCES} simd/jsimd_i386.c)
endif()
# This tells CMake that the "source" files haven't been generated yet
set_source_files_properties(${SIMD_OBJS} PROPERTIES GENERATED 1)
else()
set(JPEG_SOURCES ${JPEG_SOURCES} jsimd_none.c)
message(STATUS "Not using SIMD acceleration")
endif()
if(WITH_JAVA)
add_subdirectory(java)
set(ENABLE_SHARED TRUE)
endif()
if(ENABLE_SHARED)
add_subdirectory(sharedlib)
endif()
if(ENABLE_STATIC OR WITH_TURBOJPEG)
add_library(jpeg-static STATIC ${JPEG_SOURCES} ${SIMD_OBJS})
if(NOT MSVC)
set_target_properties(jpeg-static PROPERTIES OUTPUT_NAME jpeg)
endif()
if(WITH_SIMD)
add_dependencies(jpeg-static simd)
endif()
endif()
if(WITH_TURBOJPEG)
set(TURBOJPEG_SOURCES turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c)
if(WITH_JAVA)
set(TURBOJPEG_SOURCES ${TURBOJPEG_SOURCES} turbojpeg-jni.c)
include_directories(${JAVA_INCLUDE_PATH} ${JAVA_INCLUDE_PATH2})
endif()
if(ENABLE_SHARED)
add_library(turbojpeg SHARED ${TURBOJPEG_SOURCES})
set_target_properties(turbojpeg PROPERTIES DEFINE_SYMBOL DLLDEFINE)
if(MINGW)
set_target_properties(turbojpeg PROPERTIES LINK_FLAGS -Wl,--kill-at)
endif()
target_link_libraries(turbojpeg jpeg-static)
set_target_properties(turbojpeg PROPERTIES LINK_INTERFACE_LIBRARIES "")
add_executable(tjunittest tjunittest.c tjutil.c)
target_link_libraries(tjunittest turbojpeg)
add_executable(tjbench tjbench.c bmp.c tjutil.c rdbmp.c rdppm.c wrbmp.c
wrppm.c)
target_link_libraries(tjbench turbojpeg jpeg-static)
set_property(TARGET tjbench PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DPPM_SUPPORTED")
endif()
if(ENABLE_STATIC)
add_library(turbojpeg-static STATIC ${JPEG_SOURCES} ${SIMD_OBJS}
turbojpeg.c transupp.c jdatadst-tj.c jdatasrc-tj.c)
if(NOT MSVC)
set_target_properties(turbojpeg-static PROPERTIES OUTPUT_NAME turbojpeg)
endif()
if(WITH_SIMD)
add_dependencies(turbojpeg-static simd)
endif()
add_executable(tjunittest-static tjunittest.c tjutil.c)
target_link_libraries(tjunittest-static turbojpeg-static)
add_executable(tjbench-static tjbench.c bmp.c tjutil.c rdbmp.c rdppm.c
wrbmp.c wrppm.c)
target_link_libraries(tjbench-static turbojpeg-static jpeg-static)
set_property(TARGET tjbench-static PROPERTY COMPILE_FLAGS
"-DBMP_SUPPORTED -DPPM_SUPPORTED")
endif()
endif()
if(WITH_12BIT)
set(COMPILE_FLAGS "-DGIF_SUPPORTED -DPPM_SUPPORTED -DUSE_SETMODE")
else()
set(COMPILE_FLAGS "-DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED -DTARGA_SUPPORTED -DUSE_SETMODE")
set(CJPEG_BMP_SOURCES rdbmp.c rdtarga.c)
set(DJPEG_BMP_SOURCES wrbmp.c wrtarga.c)
endif()
if(ENABLE_STATIC)
add_executable(cjpeg-static cjpeg.c cdjpeg.c rdgif.c rdppm.c rdjpeg.c rdswitch.c
${CJPEG_BMP_SOURCES})
set_property(TARGET cjpeg-static PROPERTY COMPILE_FLAGS ${COMPILE_FLAGS})
target_link_libraries(cjpeg-static jpeg-static)
add_executable(djpeg-static djpeg.c cdjpeg.c rdcolmap.c rdswitch.c wrgif.c
wrppm.c ${DJPEG_BMP_SOURCES})
set_property(TARGET djpeg-static PROPERTY COMPILE_FLAGS ${COMPILE_FLAGS})
target_link_libraries(djpeg-static jpeg-static)
add_executable(jpegtran-static jpegtran.c cdjpeg.c rdswitch.c transupp.c)
target_link_libraries(jpegtran-static jpeg-static)
set_property(TARGET jpegtran-static PROPERTY COMPILE_FLAGS "-DUSE_SETMODE")
endif()
add_executable(rdjpgcom rdjpgcom.c)
add_executable(wrjpgcom wrjpgcom.c)
#
# Tests
#
add_subdirectory(md5)
if(MSVC_IDE)
set(OBJDIR "\${CTEST_CONFIGURATION_TYPE}/")
else()
set(OBJDIR "")
endif()
enable_testing()
if(WITH_12BIT)
set(TESTORIG testorig12.jpg)
set(MD5_JPEG_RGB_ISLOW 9620f424569594bb9242b48498ad801f)
set(MD5_PPM_RGB_ISLOW f3301d2219783b8b3d942b7239fa50c0)
set(MD5_JPEG_422_IFAST_OPT 7322e3bd2f127f7de4b40d4480ce60e4)
set(MD5_PPM_422_IFAST 79807fa552899e66a04708f533e16950)
set(MD5_PPM_422M_IFAST 07737bfe8a7c1c87aaa393a0098d16b0)
set(MD5_JPEG_420_IFAST_Q100_PROG a1da220b5604081863a504297ed59e55)
set(MD5_PPM_420_Q100_IFAST 1b3730122709f53d007255e8dfd3305e)
set(MD5_PPM_420M_Q100_IFAST 980a1a3c5bf9510022869d30b7d26566)
set(MD5_JPEG_GRAY_ISLOW 235c90707b16e2e069f37c888b2636d9)
set(MD5_PPM_GRAY_ISLOW 7213c10af507ad467da5578ca5ee1fca)
set(MD5_PPM_GRAY_ISLOW_RGB e96ee81c30a6ed422d466338bd3de65d)
set(MD5_JPEG_420S_IFAST_OPT 7af8e60be4d9c227ec63ac9b6630855e)
set(MD5_JPEG_3x2_FLOAT_PROG a8c17daf77b457725ec929e215b603f8)
set(MD5_PPM_3x2_FLOAT 42876ab9e5c2f76a87d08db5fbd57956)
set(MD5_PPM_420M_ISLOW_2_1 4ca6be2a6f326ff9eaab63e70a8259c0)
set(MD5_PPM_420M_ISLOW_15_8 12aa9f9534c1b3d7ba047322226365eb)
set(MD5_PPM_420M_ISLOW_13_8 f7e22817c7b25e1393e4ec101e9d4e96)
set(MD5_PPM_420M_ISLOW_11_8 800a16f9f4dc9b293197bfe11be10a82)
set(MD5_PPM_420M_ISLOW_9_8 06b7a92a9bc69f4dc36ec40f1937d55c)
set(MD5_PPM_420M_ISLOW_7_8 3ec444a14a4ab4eab88ffc49c48eca43)
set(MD5_PPM_420M_ISLOW_3_4 3e726b7ea872445b19437d1c1d4f0d93)
set(MD5_PPM_420M_ISLOW_5_8 a8a771abdc94301d20ffac119b2caccd)
set(MD5_PPM_420M_ISLOW_1_2 b419124dd5568b085787234866102866)
set(MD5_PPM_420M_ISLOW_3_8 343d19015531b7bbe746124127244fa8)
set(MD5_PPM_420M_ISLOW_1_4 35fd59d866e44659edfa3c18db2a3edb)
set(MD5_PPM_420M_ISLOW_1_8 ccaed48ac0aedefda5d4abe4013f4ad7)
set(MD5_PPM_420_ISLOW_SKIP15_31 86664cd9dc956536409e44e244d20a97)
set(MD5_PPM_420_ISLOW_PROG_CROP62x62_71_71 452a21656115a163029cfba5c04fa76a)
set(MD5_PPM_444_ISLOW_SKIP1_6 ef63901f71ef7a75cd78253fc0914f84)
set(MD5_PPM_444_ISLOW_PROG_CROP98x98_13_13 15b173fb5872d9575572fbcc1b05956f)
set(MD5_JPEG_CROP cdb35ff4b4519392690ea040c56ea99c)
else()
set(TESTORIG testorig.jpg)
set(MD5_JPEG_RGB_ISLOW 768e970dd57b340ff1b83c9d3d47c77b)
set(MD5_PPM_RGB_ISLOW 00a257f5393fef8821f2b88ac7421291)
set(MD5_BMP_RGB_ISLOW_565 f07d2e75073e4bb10f6c6f4d36e2e3be)
set(MD5_BMP_RGB_ISLOW_565D 4cfa0928ef3e6bb626d7728c924cfda4)
set(MD5_JPEG_422_IFAST_OPT 2540287b79d913f91665e660303ab2c8)
set(MD5_PPM_422_IFAST 35bd6b3f833bad23de82acea847129fa)
set(MD5_PPM_422M_IFAST 8dbc65323d62cca7c91ba02dd1cfa81d)
set(MD5_BMP_422M_IFAST_565 3294bd4d9a1f2b3d08ea6020d0db7065)
set(MD5_BMP_422M_IFAST_565D da98c9c7b6039511be4a79a878a9abc1)
set(MD5_JPEG_420_IFAST_Q100_PROG 990cbe0329c882420a2094da7e5adade)
set(MD5_PPM_420_Q100_IFAST 5a732542015c278ff43635e473a8a294)
set(MD5_PPM_420M_Q100_IFAST ff692ee9323a3b424894862557c092f1)
set(MD5_JPEG_GRAY_ISLOW 72b51f894b8f4a10b3ee3066770aa38d)
set(MD5_PPM_GRAY_ISLOW 8d3596c56eace32f205deccc229aa5ed)
set(MD5_PPM_GRAY_ISLOW_RGB 116424ac07b79e5e801f00508eab48ec)
set(MD5_BMP_GRAY_ISLOW_565 12f78118e56a2f48b966f792fedf23cc)
set(MD5_BMP_GRAY_ISLOW_565D bdbbd616441a24354c98553df5dc82db)
set(MD5_JPEG_420S_IFAST_OPT 388708217ac46273ca33086b22827ed8)
if(WITH_SIMD)
set(MD5_JPEG_3x2_FLOAT_PROG 343e3f8caf8af5986ebaf0bdc13b5c71)
set(MD5_PPM_3x2_FLOAT 1a75f36e5904d6fc3a85a43da9ad89bb)
else()
set(MD5_JPEG_3x2_FLOAT_PROG 9bca803d2042bd1eb03819e2bf92b3e5)
set(MD5_PPM_3x2_FLOAT f6bfab038438ed8f5522fbd33595dcdc)
endif()
set(MD5_JPEG_420_ISLOW_ARI e986fb0a637a8d833d96e8a6d6d84ea1)
set(MD5_JPEG_444_ISLOW_PROGARI 0a8f1c8f66e113c3cf635df0a475a617)
set(MD5_PPM_420M_IFAST_ARI 72b59a99bcf1de24c5b27d151bde2437)
set(MD5_JPEG_420_ISLOW 9a68f56bc76e466aa7e52f415d0f4a5f)
set(MD5_PPM_420M_ISLOW_2_1 9f9de8c0612f8d06869b960b05abf9c9)
set(MD5_PPM_420M_ISLOW_15_8 b6875bc070720b899566cc06459b63b7)
set(MD5_PPM_420M_ISLOW_13_8 bc3452573c8152f6ae552939ee19f82f)
set(MD5_PPM_420M_ISLOW_11_8 d8cc73c0aaacd4556569b59437ba00a5)
set(MD5_PPM_420M_ISLOW_9_8 d25e61bc7eac0002f5b393aa223747b6)
set(MD5_PPM_420M_ISLOW_7_8 ddb564b7c74a09494016d6cd7502a946)
set(MD5_PPM_420M_ISLOW_3_4 8ed8e68808c3fbc4ea764fc9d2968646)
set(MD5_PPM_420M_ISLOW_5_8 a3363274999da2366a024efae6d16c9b)
set(MD5_PPM_420M_ISLOW_1_2 e692a315cea26b988c8e8b29a5dbcd81)
set(MD5_PPM_420M_ISLOW_3_8 79eca9175652ced755155c90e785a996)
set(MD5_PPM_420M_ISLOW_1_4 79cd778f8bf1a117690052cacdd54eca)
set(MD5_PPM_420M_ISLOW_1_8 391b3d4aca640c8567d6f8745eb2142f)
set(MD5_BMP_420_ISLOW_256 4980185e3776e89bd931736e1cddeee6)
set(MD5_BMP_420_ISLOW_565 bf9d13e16c4923b92e1faa604d7922cb)
set(MD5_BMP_420_ISLOW_565D 6bde71526acc44bcff76f696df8638d2)
set(MD5_BMP_420M_ISLOW_565 8dc0185245353cfa32ad97027342216f)
set(MD5_BMP_420M_ISLOW_565D d1be3a3339166255e76fa50a0d70d73e)
set(MD5_PPM_420_ISLOW_SKIP15_31 c4c65c1e43d7275cd50328a61e6534f0)
set(MD5_PPM_420_ISLOW_ARI_SKIP16_139 087c6b123db16ac00cb88c5b590bb74a)
set(MD5_PPM_420_ISLOW_PROG_CROP62x62_71_71 26eb36ccc7d1f0cb80cdabb0ac8b5d99)
set(MD5_PPM_420_ISLOW_ARI_CROP53x53_4_4 886c6775af22370257122f8b16207e6d)
set(MD5_PPM_444_ISLOW_SKIP1_6 5606f86874cf26b8fcee1117a0a436a6)
set(MD5_PPM_444_ISLOW_PROG_CROP98x98_13_13 db87dc7ce26bcdc7a6b56239ce2b9d6c)
set(MD5_PPM_444_ISLOW_ARI_CROP37x37_0_0 cb57b32bd6d03e35432362f7bf184b6d)
set(MD5_JPEG_CROP b4197f377e621c4e9b1d20471432610d)
endif()
if(WITH_JAVA)
add_test(TJUnitTest
${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest)
add_test(TJUnitTest-yuv
${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -yuv)
add_test(TJUnitTest-yuv-nopad
${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -yuv -noyuvpad)
add_test(TJUnitTest-bi
${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi)
add_test(TJUnitTest-bi-yuv
${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi -yuv)
add_test(TJUnitTest-bi-yuv-nopad
${JAVA_RUNTIME} -cp java/${OBJDIR}turbojpeg.jar
-Djava.library.path=${CMAKE_CURRENT_BINARY_DIR}/${OBJDIR}
TJUnitTest -bi -yuv -noyuvpad)
endif()
set(TEST_LIBTYPES "")
if(ENABLE_SHARED)
set(TEST_LIBTYPES ${TEST_LIBTYPES} shared)
endif()
if(ENABLE_STATIC)
set(TEST_LIBTYPES ${TEST_LIBTYPES} static)
endif()
set(TESTIMAGES ${CMAKE_SOURCE_DIR}/testimages)
set(MD5CMP ${CMAKE_CURRENT_BINARY_DIR}/md5/md5cmp)
if(CMAKE_CROSSCOMPILING)
file(RELATIVE_PATH TESTIMAGES ${CMAKE_CURRENT_BINARY_DIR} ${TESTIMAGES})
file(RELATIVE_PATH MD5CMP ${CMAKE_CURRENT_BINARY_DIR} ${MD5CMP})
endif()
foreach(libtype ${TEST_LIBTYPES})
if(libtype STREQUAL "shared")
set(dir sharedlib/)
else()
set(dir "")
set(suffix -static)
endif()
if(WITH_TURBOJPEG)
add_test(tjunittest${suffix} tjunittest${suffix})
add_test(tjunittest${suffix}-alloc tjunittest${suffix} -alloc)
add_test(tjunittest${suffix}-yuv tjunittest${suffix} -yuv)
add_test(tjunittest${suffix}-yuv-alloc tjunittest${suffix} -yuv -alloc)
add_test(tjunittest${suffix}-yuv-nopad tjunittest${suffix} -yuv -noyuvpad)
endif()
# These tests are carefully chosen to provide full coverage of as many of the
# underlying algorithms as possible (including all of the SIMD-accelerated
# ones.)
# CC: null SAMP: fullsize FDCT: islow ENT: huff
add_test(cjpeg${suffix}-rgb-islow
${dir}cjpeg${suffix} -revert -rgb -dct int
-outfile testout_rgb_islow.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-rgb-islow-cmp
${MD5CMP} ${MD5_JPEG_RGB_ISLOW} testout_rgb_islow.jpg)
# CC: null SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-rgb-islow
${dir}djpeg${suffix} -dct int -ppm
-outfile testout_rgb_islow.ppm testout_rgb_islow.jpg)
add_test(djpeg${suffix}-rgb-islow-cmp
${MD5CMP} ${MD5_PPM_RGB_ISLOW} testout_rgb_islow.ppm)
if(NOT WITH_12BIT)
# CC: RGB->RGB565 SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-rgb-islow-565
${dir}djpeg${suffix} -dct int -rgb565 -dither none -bmp
-outfile testout_rgb_islow_565.bmp testout_rgb_islow.jpg)
add_test(djpeg${suffix}-rgb-islow-565-cmp
${MD5CMP} ${MD5_BMP_RGB_ISLOW_565} testout_rgb_islow_565.bmp)
# CC: RGB->RGB565 (dithered) SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-rgb-islow-565D
${dir}djpeg${suffix} -dct int -rgb565 -bmp
-outfile testout_rgb_islow_565D.bmp testout_rgb_islow.jpg)
add_test(djpeg${suffix}-rgb-islow-565D-cmp
${MD5CMP} ${MD5_BMP_RGB_ISLOW_565D} testout_rgb_islow_565D.bmp)
endif()
# CC: RGB->YCC SAMP: fullsize/h2v1 FDCT: ifast ENT: 2-pass huff
add_test(cjpeg${suffix}-422-ifast-opt
${dir}cjpeg${suffix} -revert -sample 2x1 -dct fast -opt
-outfile testout_422_ifast_opt.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-422-ifast-opt-cmp
${MD5CMP} ${MD5_JPEG_422_IFAST_OPT} testout_422_ifast_opt.jpg)
# CC: YCC->RGB SAMP: fullsize/h2v1 fancy IDCT: ifast ENT: huff
add_test(djpeg${suffix}-422-ifast
${dir}djpeg${suffix} -dct fast
-outfile testout_422_ifast.ppm testout_422_ifast_opt.jpg)
add_test(djpeg${suffix}-422-ifast-cmp
${MD5CMP} ${MD5_PPM_422_IFAST} testout_422_ifast.ppm)
# CC: YCC->RGB SAMP: h2v1 merged IDCT: ifast ENT: huff
add_test(djpeg${suffix}-422m-ifast
${dir}djpeg${suffix} -dct fast -nosmooth
-outfile testout_422m_ifast.ppm testout_422_ifast_opt.jpg)
add_test(djpeg${suffix}-422m-ifast-cmp
${MD5CMP} ${MD5_PPM_422M_IFAST} testout_422m_ifast.ppm)
if(NOT WITH_12BIT)
# CC: YCC->RGB565 SAMP: h2v1 merged IDCT: ifast ENT: huff
add_test(djpeg${suffix}-422m-ifast-565
${dir}djpeg${suffix} -dct int -nosmooth -rgb565 -dither none -bmp
-outfile testout_422m_ifast_565.bmp testout_422_ifast_opt.jpg)
add_test(djpeg${suffix}-422m-ifast-565-cmp
${MD5CMP} ${MD5_BMP_422M_IFAST_565} testout_422m_ifast_565.bmp)
# CC: YCC->RGB565 (dithered) SAMP: h2v1 merged IDCT: ifast ENT: huff
add_test(djpeg${suffix}-422m-ifast-565D
${dir}djpeg${suffix} -dct int -nosmooth -rgb565 -bmp
-outfile testout_422m_ifast_565D.bmp testout_422_ifast_opt.jpg)
add_test(djpeg${suffix}-422m-ifast-565D-cmp
${MD5CMP} ${MD5_BMP_422M_IFAST_565D} testout_422m_ifast_565D.bmp)
endif()
# CC: RGB->YCC SAMP: fullsize/h2v2 FDCT: ifast ENT: prog huff
add_test(cjpeg${suffix}-420-q100-ifast-prog
${dir}cjpeg${suffix} -revert -sample 2x2 -quality 100 -dct fast -prog
-outfile testout_420_q100_ifast_prog.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-420-q100-ifast-prog-cmp
${MD5CMP} ${MD5_JPEG_420_IFAST_Q100_PROG} testout_420_q100_ifast_prog.jpg)
# CC: YCC->RGB SAMP: fullsize/h2v2 fancy IDCT: ifast ENT: prog huff
add_test(djpeg${suffix}-420-q100-ifast-prog
${dir}djpeg${suffix} -dct fast
-outfile testout_420_q100_ifast.ppm testout_420_q100_ifast_prog.jpg)
add_test(djpeg${suffix}-420-q100-ifast-prog-cmp
${MD5CMP} ${MD5_PPM_420_Q100_IFAST} testout_420_q100_ifast.ppm)
# CC: YCC->RGB SAMP: h2v2 merged IDCT: ifast ENT: prog huff
add_test(djpeg${suffix}-420m-q100-ifast-prog
${dir}djpeg${suffix} -dct fast -nosmooth
-outfile testout_420m_q100_ifast.ppm testout_420_q100_ifast_prog.jpg)
add_test(djpeg${suffix}-420m-q100-ifast-prog-cmp
${MD5CMP} ${MD5_PPM_420M_Q100_IFAST} testout_420m_q100_ifast.ppm)
# CC: RGB->Gray SAMP: fullsize FDCT: islow ENT: huff
add_test(cjpeg${suffix}-gray-islow
${dir}cjpeg${suffix} -revert -gray -dct int
-outfile testout_gray_islow.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-gray-islow-cmp
${MD5CMP} ${MD5_JPEG_GRAY_ISLOW} testout_gray_islow.jpg)
# CC: Gray->Gray SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-gray-islow
${dir}djpeg${suffix} -dct int
-outfile testout_gray_islow.ppm testout_gray_islow.jpg)
add_test(djpeg${suffix}-gray-islow-cmp
${MD5CMP} ${MD5_PPM_GRAY_ISLOW} testout_gray_islow.ppm)
# CC: Gray->RGB SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-gray-islow-rgb
${dir}djpeg${suffix} -dct int -rgb
-outfile testout_gray_islow_rgb.ppm testout_gray_islow.jpg)
add_test(djpeg${suffix}-gray-islow-rgb-cmp
${MD5CMP} ${MD5_PPM_GRAY_ISLOW_RGB} testout_gray_islow_rgb.ppm)
if(NOT WITH_12BIT)
# CC: Gray->RGB565 SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-gray-islow-565
${dir}djpeg${suffix} -dct int -rgb565 -dither none -bmp
-outfile testout_gray_islow_565.bmp testout_gray_islow.jpg)
add_test(djpeg${suffix}-gray-islow-565-cmp
${MD5CMP} ${MD5_BMP_GRAY_ISLOW_565} testout_gray_islow_565.bmp)
# CC: Gray->RGB565 (dithered) SAMP: fullsize IDCT: islow ENT: huff
add_test(djpeg${suffix}-gray-islow-565D
${dir}djpeg${suffix} -dct int -rgb565 -bmp
-outfile testout_gray_islow_565D.bmp testout_gray_islow.jpg)
add_test(djpeg${suffix}-gray-islow-565D-cmp
${MD5CMP} ${MD5_BMP_GRAY_ISLOW_565D} testout_gray_islow_565D.bmp)
endif()
# CC: RGB->YCC SAMP: fullsize smooth/h2v2 smooth FDCT: islow
# ENT: 2-pass huff
add_test(cjpeg${suffix}-420s-ifast-opt
${dir}cjpeg${suffix} -sample 2x2 -smooth 1 -dct int -opt
-outfile testout_420s_ifast_opt.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-420s-ifast-opt-cmp
${MD5CMP} ${MD5_JPEG_420S_IFAST_OPT} testout_420s_ifast_opt.jpg)
# CC: RGB->YCC SAMP: fullsize/int FDCT: float ENT: prog huff
add_test(cjpeg${suffix}-3x2-float-prog
${dir}cjpeg${suffix} -revert -sample 3x2 -dct float -prog
-outfile testout_3x2_float_prog.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-3x2-float-prog-cmp
${MD5CMP} ${MD5_JPEG_3x2_FLOAT_PROG} testout_3x2_float_prog.jpg)
# CC: YCC->RGB SAMP: fullsize/int IDCT: float ENT: prog huff
add_test(djpeg${suffix}-3x2-float-prog
${dir}djpeg${suffix} -dct float
-outfile testout_3x2_float.ppm testout_3x2_float_prog.jpg)
add_test(djpeg${suffix}-3x2-float-prog-cmp
${MD5CMP} ${MD5_PPM_3x2_FLOAT} testout_3x2_float.ppm)
if(WITH_ARITH_ENC)
# CC: YCC->RGB SAMP: fullsize/h2v2 FDCT: islow ENT: arith
add_test(cjpeg${suffix}-420-islow-ari
${dir}cjpeg${suffix} -revert -dct int -arithmetic
-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
-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
-outfile testout_444_islow_progari.jpg ${TESTIMAGES}/testorig.ppm)
add_test(cjpeg${suffix}-444-islow-progari-cmp
${MD5CMP} ${MD5_JPEG_444_ISLOW_PROGARI} testout_444_islow_progari.jpg)
endif()
if(WITH_ARITH_DEC)
# CC: RGB->YCC SAMP: h2v2 merged IDCT: ifast ENT: arith
add_test(djpeg${suffix}-420m-ifast-ari
${dir}djpeg${suffix} -fast -ppm
-outfile testout_420m_ifast_ari.ppm ${TESTIMAGES}/testimgari.jpg)
add_test(djpeg${suffix}-420m-ifast-ari-cmp
${MD5CMP} ${MD5_PPM_420M_IFAST_ARI} testout_420m_ifast_ari.ppm)
add_test(jpegtran${suffix}-420-islow
${dir}jpegtran${suffix} -revert
-outfile testout_420_islow.jpg ${TESTIMAGES}/testimgari.jpg)
add_test(jpegtran${suffix}-420-islow-cmp
${MD5CMP} ${MD5_JPEG_420_ISLOW} testout_420_islow.jpg)
endif()
# 2/1-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 16x16 islow ENT: huff
# 15/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 15x15 islow ENT: huff
# 13/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 13x13 islow ENT: huff
# 11/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 11x11 islow ENT: huff
# 9/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 9x9 islow ENT: huff
# 7/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 7x7 islow/14x14 islow
# ENT: huff
# 3/4-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 6x6 islow/12x12 islow
# ENT: huff
# 5/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 5x5 islow/10x10 islow
# ENT: huff
# 1/2-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 4x4 islow/8x8 islow
# ENT: huff
# 3/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 3x3 islow/6x6 islow
# ENT: huff
# 1/4-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 2x2 islow/4x4 islow
# ENT: huff
# 1/8-- CC: YCC->RGB SAMP: h2v2 merged IDCT: 1x1 islow/2x2 islow
# ENT: huff
foreach(scale 2_1 15_8 13_8 11_8 9_8 7_8 3_4 5_8 1_2 3_8 1_4 1_8)
string(REGEX REPLACE "_" "/" scalearg ${scale})
add_test(djpeg${suffix}-420m-islow-${scale}
${dir}djpeg${suffix} -dct int -scale ${scalearg} -nosmooth -ppm
-outfile testout_420m_islow_${scale}.ppm ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420m-islow-${scale}-cmp
${MD5CMP} ${MD5_PPM_420M_ISLOW_${scale}} testout_420m_islow_${scale}.ppm)
endforeach()
if(NOT WITH_12BIT)
# CC: YCC->RGB (dithered) SAMP: h2v2 fancy IDCT: islow ENT: huff
add_test(djpeg${suffix}-420-islow-256
${dir}djpeg${suffix} -dct int -colors 256 -bmp
-outfile testout_420_islow_256.bmp ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420-islow-256-cmp
${MD5CMP} ${MD5_BMP_420_ISLOW_256} testout_420_islow_256.bmp)
# CC: YCC->RGB565 SAMP: h2v2 fancy IDCT: islow ENT: huff
add_test(djpeg${suffix}-420-islow-565
${dir}djpeg${suffix} -dct int -rgb565 -dither none -bmp
-outfile testout_420_islow_565.bmp ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420-islow-565-cmp
${MD5CMP} ${MD5_BMP_420_ISLOW_565} testout_420_islow_565.bmp)
# CC: YCC->RGB565 (dithered) SAMP: h2v2 fancy IDCT: islow ENT: huff
add_test(djpeg${suffix}-420-islow-565D
${dir}djpeg${suffix} -dct int -rgb565 -bmp
-outfile testout_420_islow_565D.bmp ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420-islow-565D-cmp
${MD5CMP} ${MD5_BMP_420_ISLOW_565D} testout_420_islow_565D.bmp)
# CC: YCC->RGB565 SAMP: h2v2 merged IDCT: islow ENT: huff
add_test(djpeg${suffix}-420m-islow-565
${dir}djpeg${suffix} -dct int -nosmooth -rgb565 -dither none -bmp
-outfile testout_420m_islow_565.bmp ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420m-islow-565-cmp
${MD5CMP} ${MD5_BMP_420M_ISLOW_565} testout_420m_islow_565.bmp)
# CC: YCC->RGB565 (dithered) SAMP: h2v2 merged IDCT: islow ENT: huff
add_test(djpeg${suffix}-420m-islow-565D
${dir}djpeg${suffix} -dct int -nosmooth -rgb565 -bmp
-outfile testout_420m_islow_565D.bmp ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420m-islow-565D-cmp
${MD5CMP} ${MD5_BMP_420M_ISLOW_565D} testout_420m_islow_565D.bmp)
endif()
# Partial decode tests. These tests are designed to cover all of the
# possible code paths in jpeg_skip_scanlines().
# Context rows: Yes Intra-iMCU row: Yes iMCU row prefetch: No ENT: huff
add_test(djpeg${suffix}-420-islow-skip15_31
${dir}djpeg${suffix} -dct int -skip 15,31 -ppm
-outfile testout_420_islow_skip15,31.ppm ${TESTIMAGES}/${TESTORIG})
add_test(djpeg${suffix}-420-islow-skip15_31-cmp
${MD5CMP} ${MD5_PPM_420_ISLOW_SKIP15_31} testout_420_islow_skip15,31.ppm)
# Context rows: Yes Intra-iMCU row: No iMCU row prefetch: Yes ENT: arith
if(WITH_ARITH_DEC)
add_test(djpeg${suffix}-420-islow-ari-skip16_139
${dir}djpeg${suffix} -dct int -skip 16,139 -ppm
-outfile testout_420_islow_ari_skip16,139.ppm
${TESTIMAGES}/testimgari.jpg)
add_test(djpeg${suffix}-420-islow-ari_skip16_139-cmp
${MD5CMP} ${MD5_PPM_420_ISLOW_ARI_SKIP16_139}
testout_420_islow_ari_skip16,139.ppm)
endif()
# Context rows: Yes Intra-iMCU row: No iMCU row prefetch: No ENT: prog huff
add_test(cjpeg${suffix}-420-islow-prog
${dir}cjpeg${suffix} -dct int -prog
-outfile testout_420_islow_prog.jpg ${TESTIMAGES}/testorig.ppm)
add_test(djpeg${suffix}-420-islow-prog-crop62x62_71_71
${dir}djpeg${suffix} -dct int -crop 62x62+71+71 -ppm
-outfile testout_420_islow_prog_crop62x62,71,71.ppm
testout_420_islow_prog.jpg)
add_test(djpeg${suffix}-420-islow-prog-crop62x62_71_71-cmp
${MD5CMP} ${MD5_PPM_420_ISLOW_PROG_CROP62x62_71_71}
testout_420_islow_prog_crop62x62,71,71.ppm)
# Context rows: Yes Intra-iMCU row: No iMCU row prefetch: No ENT: arith
if(WITH_ARITH_DEC)
add_test(djpeg${suffix}-420-islow-ari-crop53x53_4_4
${dir}djpeg${suffix} -dct int -crop 53x53+4+4 -ppm
-outfile testout_420_islow_ari_crop53x53,4,4.ppm
${TESTIMAGES}/testimgari.jpg)
add_test(djpeg${suffix}-420-islow-ari-crop53x53_4_4-cmp
${MD5CMP} ${MD5_PPM_420_ISLOW_ARI_CROP53x53_4_4}
testout_420_islow_ari_crop53x53,4,4.ppm)
endif()
# Context rows: No Intra-iMCU row: Yes ENT: huff
add_test(cjpeg${suffix}-444-islow
${dir}cjpeg${suffix} -dct int -sample 1x1
-outfile testout_444_islow.jpg ${TESTIMAGES}/testorig.ppm)
add_test(djpeg${suffix}-444-islow-skip1_6
${dir}djpeg${suffix} -dct int -skip 1,6 -ppm
-outfile testout_444_islow_skip1,6.ppm testout_444_islow.jpg)
add_test(djpeg${suffix}-444-islow-skip1_6-cmp
${MD5CMP} ${MD5_PPM_444_ISLOW_SKIP1_6} testout_444_islow_skip1,6.ppm)
# Context rows: No Intra-iMCU row: No ENT: prog huff
add_test(cjpeg${suffix}-444-islow-prog
${dir}cjpeg${suffix} -dct int -prog -sample 1x1
-outfile testout_444_islow_prog.jpg ${TESTIMAGES}/testorig.ppm)
add_test(djpeg${suffix}-444-islow-prog-crop98x98_13_13
${dir}djpeg${suffix} -dct int -crop 98x98+13+13 -ppm
-outfile testout_444_islow_prog_crop98x98,13,13.ppm
testout_444_islow_prog.jpg)
add_test(djpeg${suffix}-444-islow-prog_crop98x98_13_13-cmp
${MD5CMP} ${MD5_PPM_444_ISLOW_PROG_CROP98x98_13_13}
testout_444_islow_prog_crop98x98,13,13.ppm)
# Context rows: No Intra-iMCU row: No ENT: arith
if(WITH_ARITH_ENC)
add_test(cjpeg${suffix}-444-islow-ari
${dir}cjpeg${suffix} -dct int -arithmetic -sample 1x1
-outfile testout_444_islow_ari.jpg ${TESTIMAGES}/testorig.ppm)
if(WITH_ARITH_DEC)
add_test(djpeg${suffix}-444-islow-ari-crop37x37_0_0
${dir}djpeg${suffix} -dct int -crop 37x37+0+0 -ppm
-outfile testout_444_islow_ari_crop37x37,0,0.ppm
testout_444_islow_ari.jpg)
add_test(djpeg${suffix}-444-islow-ari-crop37x37_0_0-cmp
${MD5CMP} ${MD5_PPM_444_ISLOW_ARI_CROP37x37_0_0}
testout_444_islow_ari_crop37x37,0,0.ppm)
endif()
endif()
add_test(jpegtran${suffix}-crop
${dir}jpegtran${suffix} -revert -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)
endforeach()
add_custom_target(testclean COMMAND ${MD5CMP} -P
${CMAKE_SOURCE_DIR}/cmakescripts/testclean.cmake)
#
# Installer
#
if(MSVC)
set(INST_PLATFORM "Visual C++")
set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-vc)
set(INST_REG_NAME ${CMAKE_PROJECT_NAME})
elseif(MINGW)
set(INST_PLATFORM GCC)
set(INST_NAME ${CMAKE_PROJECT_NAME}-${VERSION}-gcc)
set(INST_REG_NAME ${CMAKE_PROJECT_NAME}-gcc)
set(INST_DEFS -DGCC)
endif()
if(64BIT)
set(INST_PLATFORM "${INST_PLATFORM} 64-bit")
set(INST_NAME ${INST_NAME}64)
set(INST_REG_NAME "${INST_DIR}64")
set(INST_DEFS ${INST_DEFS} -DWIN64)
endif()
if(WITH_JAVA)
set(INST_DEFS ${INST_DEFS} -DJAVA)
endif()
if(MSVC_IDE)
set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=${CMAKE_CFG_INTDIR}\\")
else()
set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=")
endif()
STRING(REGEX REPLACE "/" "\\\\" INST_DIR "${CMAKE_INSTALL_PREFIX}")
configure_file(release/mozjpeg.nsi.in mozjpeg.nsi @ONLY)
if(WITH_JAVA)
set(JAVA_DEPEND java)
endif()
add_custom_target(installer
makensis -nocd ${INST_DEFS} mozjpeg.nsi
DEPENDS jpeg jpeg-static turbojpeg turbojpeg-static rdjpgcom wrjpgcom
cjpeg djpeg jpegtran tjbench ${JAVA_DEPEND}
SOURCES mozjpeg.nsi)
if(WITH_TURBOJPEG)
if(ENABLE_SHARED)
install(TARGETS turbojpeg tjbench
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin)
endif()
if(ENABLE_STATIC)
install(TARGETS turbojpeg-static ARCHIVE DESTINATION lib)
if(NOT ENABLE_SHARED)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/tjbench-static.exe
DESTINATION bin RENAME tjbench.exe)
endif()
endif()
install(FILES ${CMAKE_SOURCE_DIR}/turbojpeg.h DESTINATION include)
endif()
if(ENABLE_STATIC)
install(TARGETS jpeg-static ARCHIVE DESTINATION lib)
if(NOT ENABLE_SHARED)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/cjpeg-static.exe
DESTINATION bin RENAME cjpeg.exe)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/djpeg-static.exe
DESTINATION bin RENAME djpeg.exe)
install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/jpegtran-static.exe
DESTINATION bin RENAME jpegtran.exe)
endif()
endif()
install(TARGETS rdjpgcom wrjpgcom RUNTIME DESTINATION bin)
install(FILES ${CMAKE_SOURCE_DIR}/README.ijg ${CMAKE_SOURCE_DIR}/README-mozilla.txt
${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
DESTINATION doc)
install(FILES ${CMAKE_BINARY_DIR}/jconfig.h ${CMAKE_SOURCE_DIR}/jerror.h
${CMAKE_SOURCE_DIR}/jmorecfg.h ${CMAKE_SOURCE_DIR}/jpeglib.h
DESTINATION include)

945
ChangeLog.md
View File

@@ -1,945 +0,0 @@
1.5.0
=====
### Significant changes relative to 1.5 beta1:
1. Fixed an issue whereby a malformed motion-JPEG frame could cause the "fast
path" of libjpeg-turbo's Huffman decoder to read from uninitialized memory.
2. Added libjpeg-turbo version and build information to the global string table
of the libjpeg and TurboJPEG API libraries. This is a common practice in other
infrastructure libraries, such as OpenSSL and libpng, because it makes it easy
to examine an application binary and determine which version of the library the
application was linked against.
3. Fixed a couple of issues in the PPM reader that would cause buffer overruns
in cjpeg if one of the values in a binary PPM/PGM input file exceeded the
maximum value defined in the file's header. libjpeg-turbo 1.4.2 already
included a similar fix for ASCII PPM/PGM files. Note that these issues were
not security bugs, since they were confined to the cjpeg program and did not
affect any of the libjpeg-turbo libraries.
4. Fixed an issue whereby attempting to decompress a JPEG file with a corrupt
header using the `tjDecompressToYUV2()` function would cause the function to
abort without returning an error and, under certain circumstances, corrupt the
stack. This only occurred if `tjDecompressToYUV2()` was called prior to
calling `tjDecompressHeader3()`, or if the return value from
`tjDecompressHeader3()` was ignored (both cases represent incorrect usage of
the TurboJPEG API.)
5. Fixed an issue in the ARM 32-bit SIMD-accelerated Huffman encoder that
prevented the code from assembling properly with clang.
6. The `jpeg_stdio_src()`, `jpeg_mem_src()`, `jpeg_stdio_dest()`, and
`jpeg_mem_dest()` functions in the libjpeg API will now throw an error if a
source/destination manager has already been assigned to the compress or
decompress object by a different function or by the calling program. This
prevents these functions from attempting to reuse a source/destination manager
structure that was allocated elsewhere, because there is no way to ensure that
it would be big enough to accommodate the new source/destination manager.
1.4.90 (1.5 beta1)
==================
### Significant changes relative to 1.4.2:
1. Added full SIMD acceleration for PowerPC platforms using AltiVec VMX
(128-bit SIMD) instructions. Although the performance of libjpeg-turbo on
PowerPC was already good, due to the increased number of registers available
to the compiler vs. x86, it was still possible to speed up compression by about
3-4x and decompression by about 2-2.5x (relative to libjpeg v6b) through the
use of AltiVec instructions.
2. Added two new libjpeg API functions (`jpeg_skip_scanlines()` and
`jpeg_crop_scanline()`) that can be used to partially decode a JPEG image. See
[libjpeg.txt](libjpeg.txt) for more details.
3. The TJCompressor and TJDecompressor classes in the TurboJPEG Java API now
implement the Closeable interface, so those classes can be used with a
try-with-resources statement.
4. The TurboJPEG Java classes now throw unchecked idiomatic exceptions
(IllegalArgumentException, IllegalStateException) for unrecoverable errors
caused by incorrect API usage, and those classes throw a new checked exception
type (TJException) for errors that are passed through from the C library.
5. Source buffers for the TurboJPEG C API functions, as well as the
`jpeg_mem_src()` function in the libjpeg API, are now declared as const
pointers. This facilitates passing read-only buffers to those functions and
ensures the caller that the source buffer will not be modified. This should
not create any backward API or ABI incompatibilities with prior libjpeg-turbo
releases.
6. The MIPS DSPr2 SIMD code can now be compiled to support either FR=0 or FR=1
FPUs.
7. Fixed additional negative left shifts and other issues reported by the GCC
and Clang undefined behavior sanitizers. Most of these issues affected only
32-bit code, and none of them was known to pose a security threat, but removing
the warnings makes it easier to detect actual security issues, should they
arise in the future.
8. Removed the unnecessary `.arch` directive from the ARM64 NEON SIMD code.
This directive was preventing the code from assembling using the clang
integrated assembler.
9. Fixed a regression caused by 1.4.1[6] that prevented 32-bit and 64-bit
libjpeg-turbo RPMs from being installed simultaneously on recent Red Hat/Fedora
distributions. This was due to the addition of a macro in jconfig.h that
allows the Huffman codec to determine the word size at compile time. Since
that macro differs between 32-bit and 64-bit builds, this caused a conflict
between the i386 and x86_64 RPMs (any differing files, other than executables,
are not allowed when 32-bit and 64-bit RPMs are installed simultaneously.)
Since the macro is used only internally, it has been moved into jconfigint.h.
10. The x86-64 SIMD code can now be disabled at run time by setting the
`JSIMD_FORCENONE` environment variable to `1` (the other SIMD implementations
already had this capability.)
11. Added a new command-line argument to TJBench (`-nowrite`) that prevents the
benchmark from outputting any images. This removes any potential operating
system overhead that might be caused by lazy writes to disk and thus improves
the consistency of the performance measurements.
12. Added SIMD acceleration for Huffman encoding on SSE2-capable x86 and x86-64
platforms. This speeds up the compression of full-color JPEGs by about 10-15%
on average (relative to libjpeg-turbo 1.4.x) when using modern Intel and AMD
CPUs. Additionally, this works around an issue in the clang optimizer that
prevents it (as of this writing) from achieving the same performance as GCC
when compiling the C version of the Huffman encoder
(<https://llvm.org/bugs/show_bug.cgi?id=16035>). For the purposes of
benchmarking or regression testing, SIMD-accelerated Huffman encoding can be
disabled by setting the `JSIMD_NOHUFFENC` environment variable to `1`.
13. Added ARM 64-bit (ARMv8) NEON SIMD implementations of the commonly-used
compression algorithms (including the slow integer forward DCT and h2v2 & h2v1
downsampling algorithms, which are not accelerated in the 32-bit NEON
implementation.) This speeds up the compression of full-color JPEGs by about
75% on average on a Cavium ThunderX processor and by about 2-2.5x on average on
Cortex-A53 and Cortex-A57 cores.
14. Added SIMD acceleration for Huffman encoding on NEON-capable ARM 32-bit
and 64-bit platforms.
For 32-bit code, this speeds up the compression of full-color JPEGs by
about 30% on average on a typical iOS device (iPhone 4S, Cortex-A9) and by
about 6-7% on average on a typical Android device (Nexus 5X, Cortex-A53 and
Cortex-A57), relative to libjpeg-turbo 1.4.x. Note that the larger speedup
under iOS is due to the fact that iOS builds use LLVM, which does not optimize
the C Huffman encoder as well as GCC does.
For 64-bit code, NEON-accelerated Huffman encoding speeds up the
compression of full-color JPEGs by about 40% on average on a typical iOS device
(iPhone 5S, Apple A7) and by about 7-8% on average on a typical Android device
(Nexus 5X, Cortex-A53 and Cortex-A57), in addition to the speedup described in
[13] above.
For the purposes of benchmarking or regression testing, SIMD-accelerated
Huffman encoding can be disabled by setting the `JSIMD_NOHUFFENC` environment
variable to `1`.
15. pkg-config (.pc) scripts are now included for both the libjpeg and
TurboJPEG API libraries on Un*x systems. Note that if a project's build system
relies on these scripts, then it will not be possible to build that project
with libjpeg or with a prior version of libjpeg-turbo.
16. Optimized the ARM 64-bit (ARMv8) NEON SIMD decompression routines to
improve performance on CPUs with in-order pipelines. This speeds up the
decompression of full-color JPEGs by nearly 2x on average on a Cavium ThunderX
processor and by about 15% on average on a Cortex-A53 core.
17. Fixed an issue in the accelerated Huffman decoder that could have caused
the decoder to read past the end of the input buffer when a malformed,
specially-crafted JPEG image was being decompressed. In prior versions of
libjpeg-turbo, the accelerated Huffman decoder was invoked (in most cases) only
if there were > 128 bytes of data in the input buffer. However, it is possible
to construct a JPEG image in which a single Huffman block is over 430 bytes
long, so this version of libjpeg-turbo activates the accelerated Huffman
decoder only if there are > 512 bytes of data in the input buffer.
18. Fixed a memory leak in tjunittest encountered when running the program
with the `-yuv` option.
1.4.2
=====
### Significant changes relative to 1.4.1:
1. Fixed an issue whereby cjpeg would segfault if a Windows bitmap with a
negative width or height was used as an input image (Windows bitmaps can have
a negative height if they are stored in top-down order, but such files are
rare and not supported by libjpeg-turbo.)
2. Fixed an issue whereby, under certain circumstances, libjpeg-turbo would
incorrectly encode certain JPEG images when quality=100 and the fast integer
forward DCT were used. This was known to cause `make test` to fail when the
library was built with `-march=haswell` on x86 systems.
3. Fixed an issue whereby libjpeg-turbo would crash when built with the latest
& greatest development version of the Clang/LLVM compiler. This was caused by
an x86-64 ABI conformance issue in some of libjpeg-turbo's 64-bit SSE2 SIMD
routines. Those routines were incorrectly using a 64-bit `mov` instruction to
transfer a 32-bit JDIMENSION argument, whereas the x86-64 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. Fixed a bug in the MIPS DSPr2 4:2:0 "plain" (non-fancy and non-merged)
upsampling routine that caused a buffer overflow (and subsequent segfault) when
decompressing a 4:2:0 JPEG image whose scaled output width was less than 16
pixels. The "plain" upsampling routines are normally only used when
decompressing a non-YCbCr JPEG image, but they are also used when decompressing
a JPEG image whose scaled output height is 1.
5. Fixed various negative left shifts and other issues reported by the GCC and
Clang undefined behavior sanitizers. None of these was known to pose a
security threat, but removing the warnings makes it easier to detect actual
security issues, should they arise in the future.
1.4.1
=====
### Significant changes relative to 1.4.0:
1. tjbench now properly handles CMYK/YCCK JPEG files. Passing an argument of
`-cmyk` (instead of, for instance, `-rgb`) will cause tjbench to internally
convert the source bitmap to CMYK prior to compression, to generate YCCK JPEG
files, and to internally convert the decompressed CMYK pixels back to RGB after
decompression (the latter is done automatically if a CMYK or YCCK JPEG is
passed to tjbench as a source image.) The CMYK<->RGB conversion operation is
not benchmarked. NOTE: The quick & dirty CMYK<->RGB conversions that tjbench
uses are suitable for testing only. Proper conversion between CMYK and RGB
requires a color management system.
2. `make test` now performs additional bitwise regression tests using tjbench,
mainly for the purpose of testing compression from/decompression to a subregion
of a larger image buffer.
3. `make test` no longer tests the regression of the floating point DCT/IDCT
by default, since the results of those tests can vary if the algorithms in
question are not implemented using SIMD instructions on a particular platform.
See the comments in [Makefile.am](Makefile.am) for information on how to
re-enable the tests and to specify an expected result for them based on the
particulars of your platform.
4. The NULL color conversion routines have been significantly optimized,
which speeds up the compression of RGB and CMYK JPEGs by 5-20% when using
64-bit code and 0-3% when using 32-bit code, and the decompression of those
images by 10-30% when using 64-bit code and 3-12% when using 32-bit code.
5. Fixed an "illegal instruction" error that occurred when djpeg from a
SIMD-enabled libjpeg-turbo MIPS build was executed with the `-nosmooth` option
on a MIPS machine that lacked DSPr2 support. The MIPS SIMD routines for h2v1
and h2v2 merged upsampling were not properly checking for the existence of
DSPr2.
6. Performance has been improved significantly on 64-bit non-Linux and
non-Windows platforms (generally 10-20% faster compression and 5-10% faster
decompression.) Due to an oversight, the 64-bit version of the accelerated
Huffman codec was not being compiled in when libjpeg-turbo was built on
platforms other than Windows or Linux. Oops.
7. Fixed an extremely rare bug in the Huffman encoder that caused 64-bit
builds of libjpeg-turbo to incorrectly encode a few specific test images when
quality=98, an optimized Huffman table, and the slow integer forward DCT were
used.
8. The Windows (CMake) build system now supports building only static or only
shared libraries. This is accomplished by adding either `-DENABLE_STATIC=0` or
`-DENABLE_SHARED=0` to the CMake command line.
9. TurboJPEG API functions will now return an error code if a warning is
triggered in the underlying libjpeg API. For instance, if a JPEG file is
corrupt, the TurboJPEG decompression functions will attempt to decompress
as much of the image as possible, but those functions will now return -1 to
indicate that the decompression was not entirely successful.
10. Fixed a bug in the MIPS DSPr2 4:2:2 fancy upsampling routine that caused a
buffer overflow (and subsequent segfault) when decompressing a 4:2:2 JPEG image
in which the right-most MCU was 5 or 6 pixels wide.
1.4.0
=====
### Significant changes relative to 1.4 beta1:
1. Fixed a build issue on OS X PowerPC platforms (md5cmp failed to build
because OS X does not provide the `le32toh()` and `htole32()` functions.)
2. The non-SIMD RGB565 color conversion code did not work correctly on big
endian machines. This has been fixed.
3. Fixed an issue in `tjPlaneSizeYUV()` whereby it would erroneously return 1
instead of -1 if `componentID` was > 0 and `subsamp` was `TJSAMP_GRAY`.
3. Fixed an issue in `tjBufSizeYUV2()` whereby it would erroneously return 0
instead of -1 if `width` was < 1.
5. The Huffman encoder now uses `clz` and `bsr` instructions for bit counting
on ARM64 platforms (see 1.4 beta1[5].)
6. The `close()` method in the TJCompressor and TJDecompressor Java classes is
now idempotent. Previously, that method would call the native `tjDestroy()`
function even if the TurboJPEG instance had already been destroyed. This
caused an exception to be thrown during finalization, if the `close()` method
had already been called. The exception was caught, but it was still an
expensive operation.
7. The TurboJPEG API previously generated an error (`Could not determine
subsampling type for JPEG image`) when attempting to decompress grayscale JPEG
images that were compressed with a sampling factor other than 1 (for instance,
with `cjpeg -grayscale -sample 2x2`). Subsampling technically has no meaning
with grayscale JPEGs, and thus the horizontal and vertical sampling factors
for such images are ignored by the decompressor. However, the TurboJPEG API
was being too rigid and was expecting the sampling factors to be equal to 1
before it treated the image as a grayscale JPEG.
8. cjpeg, djpeg, and jpegtran now accept an argument of `-version`, which will
print the library version and exit.
9. Referring to 1.4 beta1[15], another extremely rare circumstance was
discovered under which the Huffman encoder's local buffer can be overrun
when a buffered destination manager is being used and an
extremely-high-frequency block (basically junk image data) is being encoded.
Even though the Huffman local buffer was increased from 128 bytes to 136 bytes
to address the previous issue, the new issue caused even the larger buffer to
be overrun. Further analysis reveals that, in the absolute worst case (such as
setting alternating AC coefficients to 32767 and -32768 in the JPEG scanning
order), the Huffman encoder can produce encoded blocks that approach double the
size of the unencoded blocks. Thus, the Huffman local buffer was increased to
256 bytes, which should prevent any such issue from re-occurring in the future.
10. The new `tjPlaneSizeYUV()`, `tjPlaneWidth()`, and `tjPlaneHeight()`
functions were not actually usable on any platform except OS X and Windows,
because those functions were not included in the libturbojpeg mapfile. This
has been fixed.
11. Restored the `JPP()`, `JMETHOD()`, and `FAR` macros in the libjpeg-turbo
header files. The `JPP()` and `JMETHOD()` macros were originally implemented
in libjpeg as a way of supporting non-ANSI compilers that lacked support for
prototype parameters. libjpeg-turbo has never supported such compilers, but
some software packages still use the macros to define their own prototypes.
Similarly, libjpeg-turbo has never supported MS-DOS and other platforms that
have far symbols, but some software packages still use the `FAR` macro. A
pretty good argument can be made that this is a bad practice on the part of the
software in question, but since this affects more than one package, it's just
easier to fix it here.
12. Fixed issues that were preventing the ARM 64-bit SIMD code from compiling
for iOS, and included an ARMv8 architecture in all of the binaries installed by
the "official" libjpeg-turbo SDK for OS X.
1.3.90 (1.4 beta1)
==================
### Significant changes relative to 1.3.1:
1. New features in the TurboJPEG API:
- YUV planar images can now be generated with an arbitrary line padding
(previously only 4-byte padding, which was compatible with X Video, was
supported.)
- The decompress-to-YUV function has been extended to support image
scaling.
- JPEG images can now be compressed from YUV planar source images.
- YUV planar images can now be decoded into RGB or grayscale images.
- 4:1:1 subsampling is now supported. This is mainly included for
compatibility, since 4:1:1 is not fully accelerated in libjpeg-turbo and has no
significant advantages relative to 4:2:0.
- CMYK images are now supported. This feature allows CMYK source images
to be compressed to YCCK JPEGs and YCCK or CMYK JPEGs to be decompressed to
CMYK destination images. Conversion between CMYK/YCCK and RGB or YUV images is
not supported. Such conversion requires a color management system and is thus
out of scope for a codec library.
- The handling of YUV images in the Java API has been significantly
refactored and should now be much more intuitive.
- The Java API now supports encoding a YUV image from an arbitrary
position in a large image buffer.
- All of the YUV functions now have a corresponding function that operates
on separate image planes instead of a unified image buffer. This allows for
compressing/decoding from or decompressing/encoding to a subregion of a larger
YUV image. It also allows for handling YUV formats that swap the order of the
U and V planes.
2. Added SIMD acceleration for DSPr2-capable MIPS platforms. This speeds up
the compression of full-color JPEGs by 70-80% on such platforms and
decompression by 25-35%.
3. If an application attempts to decompress a Huffman-coded JPEG image whose
header does not contain Huffman tables, libjpeg-turbo will now insert the
default Huffman tables. In order to save space, many motion JPEG video frames
are encoded without the default Huffman tables, so these frames can now be
successfully decompressed by libjpeg-turbo without additional work on the part
of the application. An application can still override the Huffman tables, for
instance to re-use tables from a previous frame of the same video.
4. The Mac packaging system now uses pkgbuild and productbuild rather than
PackageMaker (which is obsolete and no longer supported.) This means that
OS X 10.6 "Snow Leopard" or later must be used when packaging libjpeg-turbo,
although the packages produced can be installed on OS X 10.5 "Leopard" or
later. OS X 10.4 "Tiger" is no longer supported.
5. The Huffman encoder now uses `clz` and `bsr` instructions for bit counting
on ARM platforms rather than a lookup table. This reduces the memory footprint
by 64k, which may be important for some mobile applications. Out of four
Android devices that were tested, two demonstrated a small overall performance
loss (~3-4% on average) with ARMv6 code and a small gain (also ~3-4%) with
ARMv7 code when enabling this new feature, but the other two devices
demonstrated a significant overall performance gain with both ARMv6 and ARMv7
code (~10-20%) when enabling the feature. Actual mileage may vary.
6. Worked around an issue with Visual C++ 2010 and later that caused incorrect
pixels to be generated when decompressing a JPEG image to a 256-color bitmap,
if compiler optimization was enabled when libjpeg-turbo was built. This caused
the regression tests to fail when doing a release build under Visual C++ 2010
and later.
7. Improved the accuracy and performance of the non-SIMD implementation of the
floating point inverse DCT (using code borrowed from libjpeg v8a and later.)
The accuracy of this implementation now matches the accuracy of the SSE/SSE2
implementation. Note, however, that the floating point DCT/IDCT algorithms are
mainly a legacy feature. They generally do not produce significantly better
accuracy than the slow integer DCT/IDCT algorithms, and they are quite a bit
slower.
8. Added a new output colorspace (`JCS_RGB565`) to the libjpeg API that allows
for decompressing JPEG images into RGB565 (16-bit) pixels. If dithering is not
used, then this code path is SIMD-accelerated on ARM platforms.
9. Numerous obsolete features, such as support for non-ANSI compilers and
support for the MS-DOS memory model, were removed from the libjpeg code,
greatly improving its readability and making it easier to maintain and extend.
10. Fixed a segfault that occurred when calling `output_message()` with
`msg_code` set to `JMSG_COPYRIGHT`.
11. Fixed an issue whereby wrjpgcom was allowing comments longer than 65k
characters to be passed on the command line, which was causing it to generate
incorrect JPEG files.
12. Fixed a bug in the build system that was causing the Windows version of
wrjpgcom to be built using the rdjpgcom source code.
13. Restored 12-bit-per-component JPEG support. A 12-bit version of
libjpeg-turbo can now be built by passing an argument of `--with-12bit` to
configure (Unix) or `-DWITH_12BIT=1` to cmake (Windows.) 12-bit JPEG support
is included only for convenience. Enabling this feature disables all of the
performance features in libjpeg-turbo, as well as arithmetic coding and the
TurboJPEG API. The resulting library still contains the other libjpeg-turbo
features (such as the colorspace extensions), but in general, it performs no
faster than libjpeg v6b.
14. Added ARM 64-bit SIMD acceleration for the YCC-to-RGB color conversion
and IDCT algorithms (both are used during JPEG decompression.) For unknown
reasons (probably related to clang), this code cannot currently be compiled for
iOS.
15. Fixed an extremely rare bug that could cause the Huffman encoder's local
buffer to overrun when a very high-frequency MCU is compressed using quality
100 and no subsampling, and when the JPEG output buffer is being dynamically
resized by the destination manager. This issue was so rare that, even with a
test program specifically designed to make the bug occur (by injecting random
high-frequency YUV data into the compressor), it was reproducible only once in
about every 25 million iterations.
16. Fixed an oversight in the TurboJPEG C wrapper: if any of the JPEG
compression functions was called repeatedly with the same
automatically-allocated destination buffer, then TurboJPEG would erroneously
assume that the `jpegSize` parameter was equal to the size of the buffer, when
in fact that parameter was probably equal to the size of the most recently
compressed JPEG image. If the size of the previous JPEG image was not as large
as the current JPEG image, then TurboJPEG would unnecessarily reallocate the
destination buffer.
1.3.1
=====
### Significant changes relative to 1.3.0:
1. On Un*x systems, `make install` now installs the libjpeg-turbo libraries
into /opt/libjpeg-turbo/lib32 by default on any 32-bit system, not just x86,
and into /opt/libjpeg-turbo/lib64 by default on any 64-bit system, not just
x86-64. You can override this by overriding either the `prefix` or `libdir`
configure variables.
2. The Windows installer now places a copy of the TurboJPEG DLLs in the same
directory as the rest of the libjpeg-turbo binaries. This was mainly done
to support TurboVNC 1.3, which bundles the DLLs in its Windows installation.
When using a 32-bit version of CMake on 64-bit Windows, it is impossible to
access the c:\WINDOWS\system32 directory, which made it impossible for the
TurboVNC build scripts to bundle the 64-bit TurboJPEG DLL.
3. Fixed a bug whereby attempting to encode a progressive JPEG with arithmetic
entropy coding (by passing arguments of `-progressive -arithmetic` to cjpeg or
jpegtran, for instance) would result in an error, `Requested feature was
omitted at compile time`.
4. Fixed a couple of issues whereby malformed JPEG images would cause
libjpeg-turbo to use uninitialized memory during decompression.
5. Fixed an error (`Buffer passed to JPEG library is too small`) that occurred
when calling the TurboJPEG YUV encoding function with a very small (< 5x5)
source image, and added a unit test to check for this error.
6. The Java classes should now build properly under Visual Studio 2010 and
later.
7. Fixed an issue that prevented SRPMs generated using the in-tree packaging
tools from being rebuilt on certain newer Linux distributions.
8. Numerous minor fixes to eliminate compilation and build/packaging system
warnings, fix cosmetic issues, improve documentation clarity, and other general
source cleanup.
1.3.0
=====
### Significant changes relative to 1.3 beta1:
1. `make test` now works properly on FreeBSD, and it no longer requires the
md5sum executable to be present on other Un*x platforms.
2. Overhauled the packaging system:
- To avoid conflict with vendor-supplied libjpeg-turbo packages, the
official RPMs and DEBs for libjpeg-turbo have been renamed to
"libjpeg-turbo-official".
- The TurboJPEG libraries are now located under /opt/libjpeg-turbo in the
official Linux and Mac packages, to avoid conflict with vendor-supplied
packages and also to streamline the packaging system.
- Release packages are now created with the directory structure defined
by the configure variables `prefix`, `bindir`, `libdir`, etc. (Un\*x) or by the
`CMAKE_INSTALL_PREFIX` variable (Windows.) The exception is that the docs are
always located under the system default documentation directory on Un\*x and
Mac systems, and on Windows, the TurboJPEG DLL is always located in the Windows
system directory.
- To avoid confusion, official libjpeg-turbo packages on Linux/Unix
platforms (except for Mac) will always install the 32-bit libraries in
/opt/libjpeg-turbo/lib32 and the 64-bit libraries in /opt/libjpeg-turbo/lib64.
- Fixed an issue whereby, in some cases, the libjpeg-turbo executables on
Un*x systems were not properly linking with the shared libraries installed by
the same package.
- Fixed an issue whereby building the "installer" target on Windows when
`WITH_JAVA=1` would fail if the TurboJPEG JAR had not been previously built.
- Building the "install" target on Windows now installs files into the
same places that the installer does.
3. Fixed a Huffman encoder bug that prevented I/O suspension from working
properly.
1.2.90 (1.3 beta1)
==================
### Significant changes relative to 1.2.1:
1. Added support for additional scaling factors (3/8, 5/8, 3/4, 7/8, 9/8, 5/4,
11/8, 3/2, 13/8, 7/4, 15/8, and 2) when decompressing. Note that the IDCT will
not be SIMD-accelerated when using any of these new scaling factors.
2. The TurboJPEG dynamic library is now versioned. It was not strictly
necessary to do so, because TurboJPEG uses versioned symbols, and if a function
changes in an ABI-incompatible way, that function is renamed and a legacy
function is provided to maintain backward compatibility. However, certain
Linux distro maintainers have a policy against accepting any library that isn't
versioned.
3. Extended the TurboJPEG Java API so that it can be used to compress a JPEG
image from and decompress a JPEG image to an arbitrary position in a large
image buffer.
4. The `tjDecompressToYUV()` function now supports the `TJFLAG_FASTDCT` flag.
5. The 32-bit supplementary package for amd64 Debian systems now provides
symlinks in /usr/lib/i386-linux-gnu for the TurboJPEG libraries in /usr/lib32.
This allows those libraries to be used on MultiArch-compatible systems (such as
Ubuntu 11 and later) without setting the linker path.
6. The TurboJPEG Java wrapper should now find the JNI library on Mac systems
without having to pass `-Djava.library.path=/usr/lib` to java.
7. TJBench has been ported to Java to provide a convenient way of validating
the performance of the TurboJPEG Java API. It can be run with
`java -cp turbojpeg.jar TJBench`.
8. cjpeg can now be used to generate JPEG files with the RGB colorspace
(feature ported from jpeg-8d.)
9. The width and height in the `-crop` argument passed to jpegtran can now be
suffixed with `f` to indicate that, when the upper left corner of the cropping
region is automatically moved to the nearest iMCU boundary, the bottom right
corner should be moved by the same amount. In other words, this feature causes
jpegtran to strictly honor the specified width/height rather than the specified
bottom right corner (feature ported from jpeg-8d.)
10. JPEG files using the RGB colorspace can now be decompressed into grayscale
images (feature ported from jpeg-8d.)
11. Fixed a regression caused by 1.2.1[7] whereby the build would fail with
multiple "Mismatch in operand sizes" errors when attempting to build the x86
SIMD code with NASM 0.98.
12. The in-memory source/destination managers (`jpeg_mem_src()` and
`jpeg_mem_dest()`) are now included by default when building libjpeg-turbo with
libjpeg v6b or v7 emulation, so that programs can take advantage of these
functions without requiring the use of the backward-incompatible libjpeg v8
ABI. The "age number" of the libjpeg-turbo library on Un*x systems has been
incremented by 1 to reflect this. You can disable this feature with a
configure/CMake switch in order to retain strict API/ABI compatibility with the
libjpeg v6b or v7 API/ABI (or with previous versions of libjpeg-turbo.) See
[README.md](README.md) for more details.
13. Added ARMv7s architecture to libjpeg.a and libturbojpeg.a in the official
libjpeg-turbo binary package for OS X, so that those libraries can be used to
build applications that leverage the faster CPUs in the iPhone 5 and iPad 4.
1.2.1
=====
### Significant changes relative to 1.2.0:
1. Creating or decoding a JPEG file that uses the RGB colorspace should now
properly work when the input or output colorspace is one of the libjpeg-turbo
colorspace extensions.
2. When libjpeg-turbo was built without SIMD support and merged (non-fancy)
upsampling was used along with an alpha-enabled colorspace during
decompression, the unused byte of the decompressed pixels was not being set to
0xFF. This has been fixed. TJUnitTest has also been extended to test for the
correct behavior of the colorspace extensions when merged upsampling is used.
3. Fixed a bug whereby the libjpeg-turbo SSE2 SIMD code would not preserve the
upper 64 bits of xmm6 and xmm7 on Win64 platforms, which violated the Win64
calling conventions.
4. Fixed a regression caused by 1.2.0[6] whereby decompressing corrupt JPEG
images (specifically, images in which the component count was erroneously set
to a large value) would cause libjpeg-turbo to segfault.
5. Worked around a severe performance issue with "Bobcat" (AMD Embedded APU)
processors. The `MASKMOVDQU` instruction, which was used by the libjpeg-turbo
SSE2 SIMD code, is apparently implemented in microcode on AMD processors, and
it is painfully slow on Bobcat processors in particular. Eliminating the use
of this instruction improved performance by an order of magnitude on Bobcat
processors and by a small amount (typically 5%) on AMD desktop processors.
6. Added SIMD acceleration for performing 4:2:2 upsampling on NEON-capable ARM
platforms. This speeds up the decompression of 4:2:2 JPEGs by 20-25% on such
platforms.
7. Fixed a regression caused by 1.2.0[2] whereby, on Linux/x86 platforms
running the 32-bit SSE2 SIMD code in libjpeg-turbo, decompressing a 4:2:0 or
4:2:2 JPEG image into a 32-bit (RGBX, BGRX, etc.) buffer without using fancy
upsampling would produce several incorrect columns of pixels at the right-hand
side of the output image if each row in the output image was not evenly
divisible by 16 bytes.
8. Fixed an issue whereby attempting to build the SIMD extensions with Xcode
4.3 on OS X platforms would cause NASM to return numerous errors of the form
"'%define' expects a macro identifier".
9. Added flags to the TurboJPEG API that allow the caller to force the use of
either the fast or the accurate DCT/IDCT algorithms in the underlying codec.
1.2.0
=====
### Significant changes relative to 1.2 beta1:
1. Fixed build issue with YASM on Unix systems (the libjpeg-turbo build system
was not adding the current directory to the assembler include path, so YASM
was not able to find jsimdcfg.inc.)
2. Fixed out-of-bounds read in SSE2 SIMD code that occurred when decompressing
a JPEG image to a bitmap buffer whose size was not a multiple of 16 bytes.
This was more of an annoyance than an actual bug, since it did not cause any
actual run-time problems, but the issue showed up when running libjpeg-turbo in
valgrind. See <http://crbug.com/72399> for more information.
3. Added a compile-time macro (`LIBJPEG_TURBO_VERSION`) that can be used to
check the version of libjpeg-turbo against which an application was compiled.
4. Added new RGBA/BGRA/ABGR/ARGB colorspace extension constants (libjpeg API)
and pixel formats (TurboJPEG API), which allow applications to specify that,
when decompressing to a 4-component RGB buffer, the unused byte should be set
to 0xFF so that it can be interpreted as an opaque alpha channel.
5. Fixed regression issue whereby DevIL failed to build against libjpeg-turbo
because libjpeg-turbo's distributed version of jconfig.h contained an `INLINE`
macro, which conflicted with a similar macro in DevIL. This macro is used only
internally when building libjpeg-turbo, so it was moved into config.h.
6. libjpeg-turbo will now correctly decompress erroneous CMYK/YCCK JPEGs whose
K component is assigned a component ID of 1 instead of 4. Although these files
are in violation of the spec, other JPEG implementations handle them
correctly.
7. Added ARMv6 and ARMv7 architectures to libjpeg.a and libturbojpeg.a in
the official libjpeg-turbo binary package for OS X, so that those libraries can
be used to build both OS X and iOS applications.
1.1.90 (1.2 beta1)
==================
### Significant changes relative to 1.1.1:
1. Added a Java wrapper for the TurboJPEG API. See [java/README](java/README)
for more details.
2. The TurboJPEG API can now be used to scale down images during
decompression.
3. Added SIMD routines for RGB-to-grayscale color conversion, which
significantly improves the performance of grayscale JPEG compression from an
RGB source image.
4. Improved the performance of the C color conversion routines, which are used
on platforms for which SIMD acceleration is not available.
5. Added a function to the TurboJPEG API that performs lossless transforms.
This function is implemented using the same back end as jpegtran, but it
performs transcoding entirely in memory and allows multiple transforms and/or
crop operations to be batched together, so the source coefficients only need to
be read once. This is useful when generating image tiles from a single source
JPEG.
6. Added tests for the new TurboJPEG scaled decompression and lossless
transform features to tjbench (the TurboJPEG benchmark, formerly called
"jpgtest".)
7. Added support for 4:4:0 (transposed 4:2:2) subsampling in TurboJPEG, which
was necessary in order for it to read 4:2:2 JPEG files that had been losslessly
transposed or rotated 90 degrees.
8. All legacy VirtualGL code has been re-factored, and this has allowed
libjpeg-turbo, in its entirety, to be re-licensed under a BSD-style license.
9. libjpeg-turbo can now be built with YASM.
10. Added SIMD acceleration for ARM Linux and iOS platforms that support
NEON instructions.
11. Refactored the TurboJPEG C API and documented it using Doxygen. The
TurboJPEG 1.2 API uses pixel formats to define the size and component order of
the uncompressed source/destination images, and it includes a more efficient
version of `TJBUFSIZE()` that computes a worst-case JPEG size based on the
level of chrominance subsampling. The refactored implementation of the
TurboJPEG API now uses the libjpeg memory source and destination managers,
which allows the TurboJPEG compressor to grow the JPEG buffer as necessary.
12. Eliminated errors in the output of jpegtran on Windows that occurred when
the application was invoked using I/O redirection
(`jpegtran <input.jpg >output.jpg`.)
13. The inclusion of libjpeg v7 and v8 emulation as well as arithmetic coding
support in libjpeg-turbo v1.1.0 introduced several new error constants in
jerror.h, and these were mistakenly enabled for all emulation modes, causing
the error enum in libjpeg-turbo to sometimes have different values than the
same enum in libjpeg. This represents an ABI incompatibility, and it caused
problems with rare applications that took specific action based on a particular
error value. The fix was to include the new error constants conditionally
based on whether libjpeg v7 or v8 emulation was enabled.
14. Fixed an issue whereby Windows applications that used libjpeg-turbo would
fail to compile if the Windows system headers were included before jpeglib.h.
This issue was caused by a conflict in the definition of the INT32 type.
15. Fixed 32-bit supplementary package for amd64 Debian systems, which was
broken by enhancements to the packaging system in 1.1.
16. When decompressing a JPEG image using an output colorspace of
`JCS_EXT_RGBX`, `JCS_EXT_BGRX`, `JCS_EXT_XBGR`, or `JCS_EXT_XRGB`,
libjpeg-turbo will now set the unused byte to 0xFF, which allows applications
to interpret that byte as an alpha channel (0xFF = opaque).
1.1.1
=====
### Significant changes relative to 1.1.0:
1. Fixed a 1-pixel error in row 0, column 21 of the luminance plane generated
by `tjEncodeYUV()`.
2. libjpeg-turbo's accelerated Huffman decoder previously ignored unexpected
markers found in the middle of the JPEG data stream during decompression. It
will now hand off decoding of a particular block to the unaccelerated Huffman
decoder if an unexpected marker is found, so that the unaccelerated Huffman
decoder can generate an appropriate warning.
3. Older versions of MinGW64 prefixed symbol names with underscores by
default, which differed from the behavior of 64-bit Visual C++. MinGW64 1.0
has adopted the behavior of 64-bit Visual C++ as the default, so to accommodate
this, the libjpeg-turbo SIMD function names are no longer prefixed with an
underscore when building with MinGW64. This means that, when building
libjpeg-turbo with older versions of MinGW64, you will now have to add
`-fno-leading-underscore` to the `CFLAGS`.
4. Fixed a regression bug in the NSIS script that caused the Windows installer
build to fail when using the Visual Studio IDE.
5. Fixed a bug in `jpeg_read_coefficients()` whereby it would not initialize
`cinfo->image_width` and `cinfo->image_height` if libjpeg v7 or v8 emulation
was enabled. This specifically caused the jpegoptim program to fail if it was
linked against a version of libjpeg-turbo that was built with libjpeg v7 or v8
emulation.
6. Eliminated excessive I/O overhead that occurred when reading BMP files in
cjpeg.
7. Eliminated errors in the output of cjpeg on Windows that occurred when the
application was invoked using I/O redirection (`cjpeg <inputfile >output.jpg`.)
1.1.0
=====
### Significant changes relative to 1.1 beta1:
1. The algorithm used by the SIMD quantization function cannot produce correct
results when the JPEG quality is >= 98 and the fast integer forward DCT is
used. Thus, the non-SIMD quantization function is now used for those cases,
and libjpeg-turbo should now produce identical output to libjpeg v6b in all
cases.
2. Despite the above, the fast integer forward DCT still degrades somewhat for
JPEG qualities greater than 95, so the TurboJPEG wrapper will now automatically
use the slow integer forward DCT when generating JPEG images of quality 96 or
greater. This reduces compression performance by as much as 15% for these
high-quality images but is necessary to ensure that the images are perceptually
lossless. It also ensures that the library can avoid the performance pitfall
created by [1].
3. Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
4. Fixed visual artifacts in grayscale JPEG compression caused by a typo in
the RGB-to-luminance lookup tables.
5. The Windows distribution packages now include the libjpeg run-time programs
(cjpeg, etc.)
6. All packages now include jpgtest.
7. The TurboJPEG dynamic library now uses versioned symbols.
8. Added two new TurboJPEG API functions, `tjEncodeYUV()` and
`tjDecompressToYUV()`, to replace the somewhat hackish `TJ_YUV` flag.
1.0.90 (1.1 beta1)
==================
### Significant changes relative to 1.0.1:
1. Added emulation of the libjpeg v7 and v8 APIs and ABIs. See
[README.md](README.md) for more details. This feature was sponsored by
CamTrace SAS.
2. Created a new CMake-based build system for the Visual C++ and MinGW builds.
3. Grayscale bitmaps can now be compressed from/decompressed to using the
TurboJPEG API.
4. jpgtest can now be used to test decompression performance with existing
JPEG images.
5. If the default install prefix (/opt/libjpeg-turbo) is used, then
`make install` now creates /opt/libjpeg-turbo/lib32 and
/opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary
packages.
6. All symbols in the libjpeg-turbo dynamic library are now versioned, even
when the library is built with libjpeg v6b emulation.
7. Added arithmetic encoding and decoding support (can be disabled with
configure or CMake options)
8. Added a `TJ_YUV` flag to the TurboJPEG API, which causes both the compressor
and decompressor to output planar YUV images.
9. Added an extended version of `tjDecompressHeader()` to the TurboJPEG API,
which allows the caller to determine the type of subsampling used in a JPEG
image.
10. Added further protections against invalid Huffman codes.
1.0.1
=====
### Significant changes relative to 1.0.0:
1. The Huffman decoder will now handle erroneous Huffman codes (for instance,
from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to
crash under certain circumstances.
2. Fixed typo in SIMD dispatch routines that was causing 4:2:2 upsampling to
be used instead of 4:2:0 when decompressing JPEG images using SSE2 code.
3. The configure script will now automatically determine whether the
`INCOMPLETE_TYPES_BROKEN` macro should be defined.
1.0.0
=====
### Significant changes relative to 0.0.93:
1. 2983700: Further FreeBSD build tweaks (no longer necessary to specify
`--host` when configuring on a 64-bit system)
2. Created symlinks in the Unix/Linux packages so that the TurboJPEG
include file can always be found in /opt/libjpeg-turbo/include, the 32-bit
static libraries can always be found in /opt/libjpeg-turbo/lib32, and the
64-bit static libraries can always be found in /opt/libjpeg-turbo/lib64.
3. The Unix/Linux distribution packages now include the libjpeg run-time
programs (cjpeg, etc.) and man pages.
4. Created a 32-bit supplementary package for amd64 Debian systems, which
contains just the 32-bit libjpeg-turbo libraries.
5. Moved the libraries from */lib32 to */lib in the i386 Debian package.
6. Include distribution package for Cygwin
7. No longer necessary to specify `--without-simd` on non-x86 architectures,
and unit tests now work on those architectures.
0.0.93
======
### Significant changes since 0.0.91:
1. 2982659: Fixed x86-64 build on FreeBSD systems
2. 2988188: Added support for Windows 64-bit systems
0.0.91
======
### Significant changes relative to 0.0.90:
1. Added documentation to .deb packages
2. 2968313: Fixed data corruption issues when decompressing large JPEG images
and/or using buffered I/O with the libjpeg-turbo decompressor
0.0.90
======
Initial release

88
LICENSE.md
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@@ -1,88 +0,0 @@
libjpeg-turbo Licenses
======================
libjpeg-turbo is covered by three compatible BSD-style open source licenses:
- The IJG (Independent JPEG Group) License, which is listed in
[README.ijg](README.ijg)
This license applies to the libjpeg API library and associated programs
(any code inherited from libjpeg, and any modifications to that code.)
- The Modified (3-clause) BSD License, which is listed in
[turbojpeg.c](turbojpeg.c)
This license covers the TurboJPEG API library and associated programs.
- The zlib License, which is listed in [simd/jsimdext.inc](simd/jsimdext.inc)
This license is a subset of the other two, and it covers the libjpeg-turbo
SIMD extensions.
Complying with the libjpeg-turbo Licenses
=========================================
This section provides a roll-up of the libjpeg-turbo licensing terms, to the
best of our understanding.
1. If you are distributing a modified version of the libjpeg-turbo source,
then:
1. You cannot alter or remove any existing copyright or license notices
from the source.
**Origin**
- Clause 1 of the IJG License
- Clause 1 of the Modified BSD License
- Clauses 1 and 3 of the zlib License
2. You must add your own copyright notice to the header of each source
file you modified, so others can tell that you modified that file (if
there is not an existing copyright header in that file, then you can
simply add a notice stating that you modified the file.)
**Origin**
- Clause 1 of the IJG License
- Clause 2 of the zlib License
3. You must include the IJG README file, and you must not alter any of the
copyright or license text in that file.
**Origin**
- Clause 1 of the IJG License
2. If you are distributing only libjpeg-turbo binaries without the source, or
if you are distributing an application that statically links with
libjpeg-turbo, then:
1. Your product documentation must include a message stating:
This software is based in part on the work of the Independent JPEG
Group.
**Origin**
- Clause 2 of the IJG license
2. If your binary distribution includes or uses the TurboJPEG API, then
your product documentation must include the text of the Modified BSD
License.
**Origin**
- Clause 2 of the Modified BSD License
3. You cannot use the name of the IJG or The libjpeg-turbo Project or the
contributors thereof in advertising, publicity, etc.
**Origin**
- IJG License
- Clause 3 of the Modified BSD License
4. The IJG and The libjpeg-turbo Project do not warrant libjpeg-turbo to be
free of defects, nor do we accept any liability for undesirable
consequences resulting from your use of the software.
**Origin**
- IJG License
- Modified BSD License
- zlib License

894
Makefile.am
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@@ -1,792 +1,138 @@
## Process this file with automake to produce Makefile.in
#
# Automake Makefile for the JPEG library
#
# This file is written by Bob Friesenhahn, Guido Vollbeding
#
# Sources to build library
LIBSOURCES = jaricom.c jcapimin.c jcapistd.c jcarith.c jccoefct.c jccolor.c \
jcdctmgr.c jchuff.c jcinit.c jcmainct.c jcmarker.c jcmaster.c \
jcomapi.c jcparam.c jcprepct.c jcsample.c jctrans.c jdapimin.c \
jdapistd.c jdarith.c jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c \
jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c jdmaster.c \
jdmerge.c jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c \
jfdctfst.c jfdctint.c jidctflt.c jidctfst.c jidctint.c jquant1.c \
jquant2.c jutils.c jmemmgr.c @MEMORYMGR@.c
# System dependent sources
SYSDEPSOURCES = jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c
# Headers which are installed to support the library
INSTINCLUDES = jerror.h jmorecfg.h jpeglib.h
# Headers which are not installed
OTHERINCLUDES = cderror.h cdjpeg.h jdct.h jinclude.h jmemsys.h jpegint.h \
jversion.h transupp.h
# Manual pages (Automake uses 'MANS' for itself)
DISTMANS= cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
# Other documentation files
DOCS= README install.txt usage.txt wizard.txt example.c libjpeg.txt \
structure.txt coderules.txt filelist.txt change.log
# Makefiles for various systems
MKFILES= configure Makefile.in makefile.ansi makefile.unix makefile.b32 \
makefile.bcc makefile.mc6 makefile.dj makefile.wat makefile.vc \
makefile.vs makejdsw.vc6 makeadsw.vc6 makejdep.vc6 makejdsp.vc6 \
makejmak.vc6 makecdep.vc6 makecdsp.vc6 makecmak.vc6 makeddep.vc6 \
makeddsp.vc6 makedmak.vc6 maketdep.vc6 maketdsp.vc6 maketmak.vc6 \
makerdep.vc6 makerdsp.vc6 makermak.vc6 makewdep.vc6 makewdsp.vc6 \
makewmak.vc6 makejsln.v15 makeasln.v15 makejvcx.v15 makejfil.v15 \
makecvcx.v15 makecfil.v15 makedvcx.v15 makedfil.v15 maketvcx.v15 \
maketfil.v15 makervcx.v15 makerfil.v15 makewvcx.v15 makewfil.v15 \
makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st maktjpeg.st \
makefile.manx makefile.sas makefile.mms makefile.vms makvms.opt
# Configuration files
CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \
jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \
jconfig.vms
# Support scripts for configure
CONFIGUREFILES= config.guess config.sub install-sh ltmain.sh depcomp \
missing ar-lib
# Miscellaneous support files
OTHERFILES= jconfig.txt ckconfig.c jmemdosa.asm libjpeg.map libjpeg.pc.in
# Test support files
TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \
testimgp.jpg
# libtool libraries to build
lib_LTLIBRARIES = libjpeg.la
libjpeg_la_LDFLAGS = -version-info ${LIBTOOL_CURRENT}:${SO_MINOR_VERSION}:${SO_AGE} -no-undefined
include_HEADERS = jerror.h jmorecfg.h jpeglib.h
if WITH_TURBOJPEG
lib_LTLIBRARIES += libturbojpeg.la
libturbojpeg_la_LDFLAGS = -version-info 1:0:1 -no-undefined
include_HEADERS += turbojpeg.h
# Library sources for libjpeg.la
libjpeg_la_SOURCES = $(LIBSOURCES)
# LDFLAGS for libjpeg.la
libjpeg_la_LDFLAGS = -no-undefined \
-version-info $(JPEG_LIB_VERSION)
if HAVE_LD_VERSION_SCRIPT
libjpeg_la_LDFLAGS += -Wl,--version-script=$(srcdir)/libjpeg.map
endif
nodist_include_HEADERS = jconfig.h
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = pkgscripts/libjpeg.pc pkgscripts/libturbojpeg.pc
HDRS = jchuff.h jcmaster.h jdct.h jdhuff.h jerror.h jinclude.h jmemsys.h \
jmorecfg.h jpegint.h jpeglib.h jversion.h jsimd.h jsimddct.h jpegcomp.h \
jpeg_nbits_table.h
libjpeg_la_SOURCES = $(HDRS) jcapimin.c jcapistd.c jccoefct.c jccolor.c \
jcdctmgr.c jcext.c jchuff.c jcinit.c jcmainct.c jcmarker.c \
jcmaster.c jcomapi.c jcparam.c jcphuff.c jcprepct.c jcsample.c \
jctrans.c jdapimin.c jdapistd.c jdatadst.c jdatasrc.c jdcoefct.c \
jdcolor.c jddctmgr.c jdhuff.c jdinput.c jdmainct.c jdmarker.c \
jdmaster.c jdmerge.c jdphuff.c jdpostct.c jdsample.c jdtrans.c \
jerror.c jfdctflt.c jfdctfst.c jfdctint.c jidctflt.c jidctfst.c \
jidctint.c jidctred.c jquant1.c jquant2.c jutils.c jmemmgr.c jmemnobs.c
if WITH_ARITH
libjpeg_la_SOURCES += jaricom.c
endif
if WITH_ARITH_ENC
libjpeg_la_SOURCES += jcarith.c
endif
if WITH_ARITH_DEC
libjpeg_la_SOURCES += jdarith.c
endif
SUBDIRS = java
if WITH_TURBOJPEG
libturbojpeg_la_SOURCES = $(libjpeg_la_SOURCES) turbojpeg.c turbojpeg.h \
transupp.c transupp.h jdatadst-tj.c jdatasrc-tj.c
if WITH_JAVA
libturbojpeg_la_SOURCES += turbojpeg-jni.c
libturbojpeg_la_CFLAGS = ${JNI_CFLAGS}
TJMAPFILE = turbojpeg-mapfile.jni
else
TJMAPFILE = turbojpeg-mapfile
endif
libturbojpeg_la_SOURCES += $(TJMAPFILE)
if VERSION_SCRIPT
libturbojpeg_la_LDFLAGS += $(VERSION_SCRIPT_FLAG)$(srcdir)/$(TJMAPFILE)
endif
endif
if VERSION_SCRIPT
libjpeg_la_LDFLAGS += $(VERSION_SCRIPT_FLAG)libjpeg.map
endif
if WITH_SIMD
SUBDIRS += simd
libjpeg_la_LIBADD = simd/libsimd.la
libturbojpeg_la_LIBADD = simd/libsimd.la
else
libjpeg_la_SOURCES += jsimd_none.c
endif
# Executables to build
bin_PROGRAMS = cjpeg djpeg jpegtran rdjpgcom wrjpgcom
noinst_PROGRAMS = jcstest jpegyuv yuvjpeg
if WITH_TURBOJPEG
bin_PROGRAMS += tjbench
noinst_PROGRAMS += tjunittest
tjbench_SOURCES = tjbench.c bmp.h bmp.c tjutil.h tjutil.c rdbmp.c rdppm.c \
wrbmp.c wrppm.c
tjbench_LDADD = libturbojpeg.la libjpeg.la -lm
tjbench_CFLAGS = -DBMP_SUPPORTED -DPPM_SUPPORTED
tjunittest_SOURCES = tjunittest.c tjutil.h tjutil.c
tjunittest_LDADD = libturbojpeg.la
endif
cjpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c cjpeg.c rdgif.c rdppm.c rdswitch.c rdjpeg.c
if WITH_12BIT
else
cjpeg_SOURCES += rdbmp.c rdtarga.c
endif
cjpeg_LDADD = libjpeg.la
cjpeg_CFLAGS = -DGIF_SUPPORTED -DPPM_SUPPORTED
if WITH_12BIT
else
cjpeg_CFLAGS += -DBMP_SUPPORTED -DTARGA_SUPPORTED
endif
if HAVE_LIBPNG
cjpeg_CFLAGS += -DPNG_SUPPORTED $(libpng_CFLAGS)
cjpeg_LDADD += $(libpng_LIBS)
cjpeg_SOURCES += rdpng.c
endif
djpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c djpeg.c rdcolmap.c rdswitch.c \
wrgif.c wrppm.c
if WITH_12BIT
else
djpeg_SOURCES += wrbmp.c wrtarga.c
endif
djpeg_LDADD = libjpeg.la
djpeg_CFLAGS = -DGIF_SUPPORTED -DPPM_SUPPORTED
if WITH_12BIT
else
djpeg_CFLAGS += -DBMP_SUPPORTED -DTARGA_SUPPORTED
endif
jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c transupp.h
jpegtran_LDADD = libjpeg.la
# Executable sources & libs
cjpeg_SOURCES = cjpeg.c rdppm.c rdgif.c rdtarga.c rdrle.c rdbmp.c \
rdswitch.c cdjpeg.c
cjpeg_LDADD = libjpeg.la
djpeg_SOURCES = djpeg.c wrppm.c wrgif.c wrtarga.c wrrle.c wrbmp.c \
rdcolmap.c cdjpeg.c
djpeg_LDADD = libjpeg.la
jpegtran_SOURCES = jpegtran.c rdswitch.c cdjpeg.c transupp.c
jpegtran_LDADD = libjpeg.la
rdjpgcom_SOURCES = rdjpgcom.c
rdjpgcom_LDADD = libjpeg.la
wrjpgcom_SOURCES = wrjpgcom.c
wrjpgcom_LDADD = libjpeg.la
# Manual pages to install
man_MANS = $(DISTMANS)
jcstest_SOURCES = jcstest.c
# Headers to install
include_HEADERS = $(INSTINCLUDES)
jcstest_LDADD = libjpeg.la
# Other distributed headers
noinst_HEADERS = $(OTHERINCLUDES)
jpegyuv_SOURCES = jpegyuv.c
# Other distributed files
EXTRA_DIST = $(DOCS) $(DISTMANS) $(MKFILES) $(CONFIGFILES) $(SYSDEPSOURCES) \
$(OTHERFILES) $(TESTFILES)
jpegyuv_LDADD = libjpeg.la
# pkg-config file
pkgconfigdir = $(libdir)/pkgconfig
nodist_pkgconfig_DATA = libjpeg.pc
yuvjpeg_SOURCES = yuvjpeg.c
# Files to be cleaned
CLEANFILES = testout.ppm testout.bmp testout.jpg testoutp.ppm testoutp.jpg \
testoutt.jpg
yuvjpeg_LDADD = libjpeg.la
# Install jconfig.h
install-data-local:
$(mkinstalldirs) $(DESTDIR)$(includedir)
$(INSTALL_HEADER) jconfig.h $(DESTDIR)$(includedir)/jconfig.h
dist_man1_MANS = cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 wrjpgcom.1
# Uninstall jconfig.h
uninstall-local:
rm -f $(DESTDIR)$(includedir)/jconfig.h
DOCS= coderules.txt jconfig.txt change.log rdrle.c wrrle.c BUILDING.md \
ChangeLog.md
dist_doc_DATA = README.ijg README.md libjpeg.txt structure.txt usage.txt \
wizard.txt LICENSE.md
exampledir = $(docdir)
dist_example_DATA = example.c
EXTRA_DIST = win release $(DOCS) testimages CMakeLists.txt \
sharedlib/CMakeLists.txt cmakescripts libjpeg.map.in doc doxygen.config \
doxygen-extra.css jccolext.c jdcolext.c jdcol565.c jdmrgext.c jdmrg565.c \
jstdhuff.c jdcoefct.h jdmainct.h jdmaster.h jdsample.h wrppm.h \
md5/CMakeLists.txt
dist-hook:
rm -rf `find $(distdir) -name .svn`
SUBDIRS += md5
if WITH_12BIT
TESTORIG = testorig12.jpg
MD5_JPEG_RGB_ISLOW = 9620f424569594bb9242b48498ad801f
MD5_PPM_RGB_ISLOW = f3301d2219783b8b3d942b7239fa50c0
MD5_JPEG_422_IFAST_OPT = 7322e3bd2f127f7de4b40d4480ce60e4
MD5_PPM_422_IFAST = 79807fa552899e66a04708f533e16950
MD5_PPM_422M_IFAST = 07737bfe8a7c1c87aaa393a0098d16b0
MD5_JPEG_420_IFAST_Q100_PROG = a1da220b5604081863a504297ed59e55
MD5_PPM_420_Q100_IFAST = 1b3730122709f53d007255e8dfd3305e
MD5_PPM_420M_Q100_IFAST = 980a1a3c5bf9510022869d30b7d26566
MD5_JPEG_GRAY_ISLOW = 235c90707b16e2e069f37c888b2636d9
MD5_PPM_GRAY_ISLOW = 7213c10af507ad467da5578ca5ee1fca
MD5_PPM_GRAY_ISLOW_RGB = e96ee81c30a6ed422d466338bd3de65d
MD5_JPEG_420S_IFAST_OPT = 7af8e60be4d9c227ec63ac9b6630855e
MD5_JPEG_3x2_FLOAT_PROG_SSE = a8c17daf77b457725ec929e215b603f8
MD5_PPM_3x2_FLOAT_SSE = 42876ab9e5c2f76a87d08db5fbd57956
MD5_JPEG_3x2_FLOAT_PROG_32BIT = a8c17daf77b457725ec929e215b603f8
MD5_PPM_3x2_FLOAT_32BIT = 42876ab9e5c2f76a87d08db5fbd57956
MD5_PPM_3x2_FLOAT_64BIT = d6fbc71153b3d8ded484dbc17c7b9cf4
MD5_JPEG_3x2_IFAST_PROG = 1396cc2b7185cfe943d408c9d305339e
MD5_PPM_3x2_IFAST = 3975985ef6eeb0a2cdc58daa651ccc00
MD5_PPM_420M_ISLOW_2_1 = 4ca6be2a6f326ff9eaab63e70a8259c0
MD5_PPM_420M_ISLOW_15_8 = 12aa9f9534c1b3d7ba047322226365eb
MD5_PPM_420M_ISLOW_13_8 = f7e22817c7b25e1393e4ec101e9d4e96
MD5_PPM_420M_ISLOW_11_8 = 800a16f9f4dc9b293197bfe11be10a82
MD5_PPM_420M_ISLOW_9_8 = 06b7a92a9bc69f4dc36ec40f1937d55c
MD5_PPM_420M_ISLOW_7_8 = 3ec444a14a4ab4eab88ffc49c48eca43
MD5_PPM_420M_ISLOW_3_4 = 3e726b7ea872445b19437d1c1d4f0d93
MD5_PPM_420M_ISLOW_5_8 = a8a771abdc94301d20ffac119b2caccd
MD5_PPM_420M_ISLOW_1_2 = b419124dd5568b085787234866102866
MD5_PPM_420M_ISLOW_3_8 = 343d19015531b7bbe746124127244fa8
MD5_PPM_420M_ISLOW_1_4 = 35fd59d866e44659edfa3c18db2a3edb
MD5_PPM_420M_ISLOW_1_8 = ccaed48ac0aedefda5d4abe4013f4ad7
MD5_PPM_420_ISLOW_SKIP15_31 = 86664cd9dc956536409e44e244d20a97
MD5_PPM_420_ISLOW_PROG_CROP62x62_71_71 = 452a21656115a163029cfba5c04fa76a
MD5_PPM_444_ISLOW_SKIP1_6 = ef63901f71ef7a75cd78253fc0914f84
MD5_PPM_444_ISLOW_PROG_CROP98x98_13_13 = 15b173fb5872d9575572fbcc1b05956f
MD5_JPEG_CROP = cdb35ff4b4519392690ea040c56ea99c
else
TESTORIG = testorig.jpg
MD5_JPEG_RGB_ISLOW = 768e970dd57b340ff1b83c9d3d47c77b
MD5_PPM_RGB_ISLOW = 00a257f5393fef8821f2b88ac7421291
MD5_BMP_RGB_ISLOW_565 = f07d2e75073e4bb10f6c6f4d36e2e3be
MD5_BMP_RGB_ISLOW_565D = 4cfa0928ef3e6bb626d7728c924cfda4
MD5_JPEG_422_IFAST_OPT = 2540287b79d913f91665e660303ab2c8
MD5_PPM_422_IFAST = 35bd6b3f833bad23de82acea847129fa
MD5_PPM_422M_IFAST = 8dbc65323d62cca7c91ba02dd1cfa81d
MD5_BMP_422M_IFAST_565 = 3294bd4d9a1f2b3d08ea6020d0db7065
MD5_BMP_422M_IFAST_565D = da98c9c7b6039511be4a79a878a9abc1
MD5_JPEG_420_IFAST_Q100_PROG = 990cbe0329c882420a2094da7e5adade
MD5_PPM_420_Q100_IFAST = 5a732542015c278ff43635e473a8a294
MD5_PPM_420M_Q100_IFAST = ff692ee9323a3b424894862557c092f1
MD5_JPEG_GRAY_ISLOW = 72b51f894b8f4a10b3ee3066770aa38d
MD5_PPM_GRAY_ISLOW = 8d3596c56eace32f205deccc229aa5ed
MD5_PPM_GRAY_ISLOW_RGB = 116424ac07b79e5e801f00508eab48ec
MD5_BMP_GRAY_ISLOW_565 = 12f78118e56a2f48b966f792fedf23cc
MD5_BMP_GRAY_ISLOW_565D = bdbbd616441a24354c98553df5dc82db
MD5_JPEG_420S_IFAST_OPT = 388708217ac46273ca33086b22827ed8
# See README.md for more details on why this next bit is necessary.
MD5_JPEG_3x2_FLOAT_PROG_SSE = 343e3f8caf8af5986ebaf0bdc13b5c71
MD5_PPM_3x2_FLOAT_SSE = 1a75f36e5904d6fc3a85a43da9ad89bb
MD5_JPEG_3x2_FLOAT_PROG_32BIT = 9bca803d2042bd1eb03819e2bf92b3e5
MD5_PPM_3x2_FLOAT_32BIT = f6bfab038438ed8f5522fbd33595dcdc
MD5_PPM_3x2_FLOAT_64BIT = 0e917a34193ef976b679a6b069b1be26
MD5_JPEG_3x2_IFAST_PROG = 1ee5d2c1a77f2da495f993c8c7cceca5
MD5_PPM_3x2_IFAST = fd283664b3b49127984af0a7f118fccd
MD5_JPEG_420_ISLOW_ARI = e986fb0a637a8d833d96e8a6d6d84ea1
MD5_JPEG_444_ISLOW_PROGARI = 0a8f1c8f66e113c3cf635df0a475a617
MD5_PPM_420M_IFAST_ARI = 72b59a99bcf1de24c5b27d151bde2437
MD5_JPEG_420_ISLOW = 9a68f56bc76e466aa7e52f415d0f4a5f
MD5_PPM_420M_ISLOW_2_1 = 9f9de8c0612f8d06869b960b05abf9c9
MD5_PPM_420M_ISLOW_15_8 = b6875bc070720b899566cc06459b63b7
MD5_PPM_420M_ISLOW_13_8 = bc3452573c8152f6ae552939ee19f82f
MD5_PPM_420M_ISLOW_11_8 = d8cc73c0aaacd4556569b59437ba00a5
MD5_PPM_420M_ISLOW_9_8 = d25e61bc7eac0002f5b393aa223747b6
MD5_PPM_420M_ISLOW_7_8 = ddb564b7c74a09494016d6cd7502a946
MD5_PPM_420M_ISLOW_3_4 = 8ed8e68808c3fbc4ea764fc9d2968646
MD5_PPM_420M_ISLOW_5_8 = a3363274999da2366a024efae6d16c9b
MD5_PPM_420M_ISLOW_1_2 = e692a315cea26b988c8e8b29a5dbcd81
MD5_PPM_420M_ISLOW_3_8 = 79eca9175652ced755155c90e785a996
MD5_PPM_420M_ISLOW_1_4 = 79cd778f8bf1a117690052cacdd54eca
MD5_PPM_420M_ISLOW_1_8 = 391b3d4aca640c8567d6f8745eb2142f
MD5_BMP_420_ISLOW_256 = 4980185e3776e89bd931736e1cddeee6
MD5_BMP_420_ISLOW_565 = bf9d13e16c4923b92e1faa604d7922cb
MD5_BMP_420_ISLOW_565D = 6bde71526acc44bcff76f696df8638d2
MD5_BMP_420M_ISLOW_565 = 8dc0185245353cfa32ad97027342216f
MD5_BMP_420M_ISLOW_565D =d1be3a3339166255e76fa50a0d70d73e
MD5_PPM_420_ISLOW_SKIP15_31 = c4c65c1e43d7275cd50328a61e6534f0
MD5_PPM_420_ISLOW_ARI_SKIP16_139 = 087c6b123db16ac00cb88c5b590bb74a
MD5_PPM_420_ISLOW_PROG_CROP62x62_71_71 = 26eb36ccc7d1f0cb80cdabb0ac8b5d99
MD5_PPM_420_ISLOW_ARI_CROP53x53_4_4 = 886c6775af22370257122f8b16207e6d
MD5_PPM_444_ISLOW_SKIP1_6 = 5606f86874cf26b8fcee1117a0a436a6
MD5_PPM_444_ISLOW_PROG_CROP98x98_13_13 = db87dc7ce26bcdc7a6b56239ce2b9d6c
MD5_PPM_444_ISLOW_ARI_CROP37x37_0_0 = cb57b32bd6d03e35432362f7bf184b6d
MD5_JPEG_CROP = b4197f377e621c4e9b1d20471432610d
endif
.PHONY: test
test: tjquicktest tjbittest bittest
if CROSS_COMPILING
tjquicktest: testclean
else
tjquicktest: testclean all
endif
if WITH_TURBOJPEG
if WITH_JAVA
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -bi
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -noyuvpad
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -bi
$(JAVA) -cp java/turbojpeg.jar -Djava.library.path=.libs TJUnitTest -yuv -bi -noyuvpad
endif
./tjunittest
./tjunittest -alloc
./tjunittest -yuv
./tjunittest -yuv -alloc
./tjunittest -yuv -noyuvpad
endif
echo GREAT SUCCESS!
if CROSS_COMPILING
tjbittest: testclean
else
tjbittest: testclean all
endif
if WITH_TURBOJPEG
MD5_PPM_GRAY_TILE = 89d3ca21213d9d864b50b4e4e7de4ca6
MD5_PPM_420_8x8_TILE = 847fceab15c5b7b911cb986cf0f71de3
MD5_PPM_420_16x16_TILE = ca45552a93687e078f7137cc4126a7b0
MD5_PPM_420_32x32_TILE = d8676f1d6b68df358353bba9844f4a00
MD5_PPM_420_64x64_TILE = 4e4c1a3d7ea4bace4f868bcbe83b7050
MD5_PPM_420_128x128_TILE = f24c3429c52265832beab9df72a0ceae
MD5_PPM_420M_8x8_TILE = bc25320e1f4c31ce2e610e43e9fd173c
MD5_PPM_420M_TILE = 75ffdf14602258c5c189522af57fa605
MD5_PPM_422_8x8_TILE = d83dacd9fc73b0a6f10c09acad64eb1e
MD5_PPM_422_16x16_TILE = 35077fb610d72dd743b1eb0cbcfe10fb
MD5_PPM_422_32x32_TILE = e6902ed8a449ecc0f0d6f2bf945f65f7
MD5_PPM_422_64x64_TILE = 2b4502a8f316cedbde1da7bce3d2231e
MD5_PPM_422_128x128_TILE = f0b5617d578f5e13c8eee215d64d4877
MD5_PPM_422M_8x8_TILE = 828941d7f41cd6283abd6beffb7fd51d
MD5_PPM_422M_TILE = e877ae1324c4a280b95376f7f018172f
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
for i in 8 16 32 64 128; do \
md5/md5cmp $(MD5_PPM_GRAY_TILE) testout_tile_GRAY_Q95_$$i\x$$i.ppm; \
done
md5/md5cmp $(MD5_PPM_420_8x8_TILE) testout_tile_420_Q95_8x8.ppm
md5/md5cmp $(MD5_PPM_420_16x16_TILE) testout_tile_420_Q95_16x16.ppm
md5/md5cmp $(MD5_PPM_420_32x32_TILE) testout_tile_420_Q95_32x32.ppm
md5/md5cmp $(MD5_PPM_420_64x64_TILE) testout_tile_420_Q95_64x64.ppm
md5/md5cmp $(MD5_PPM_420_128x128_TILE) testout_tile_420_Q95_128x128.ppm
md5/md5cmp $(MD5_PPM_422_8x8_TILE) testout_tile_422_Q95_8x8.ppm
md5/md5cmp $(MD5_PPM_422_16x16_TILE) testout_tile_422_Q95_16x16.ppm
md5/md5cmp $(MD5_PPM_422_32x32_TILE) testout_tile_422_Q95_32x32.ppm
md5/md5cmp $(MD5_PPM_422_64x64_TILE) testout_tile_422_Q95_64x64.ppm
md5/md5cmp $(MD5_PPM_422_128x128_TILE) testout_tile_422_Q95_128x128.ppm
for i in 8 16 32 64 128; do \
md5/md5cmp $(MD5_PPM_444_TILE) testout_tile_444_Q95_$$i\x$$i.ppm; \
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
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; \
done
md5/md5cmp $(MD5_PPM_422M_8x8_TILE) testout_tile_422_Q95_8x8.ppm
for i in 16 32 64 128; do \
md5/md5cmp $(MD5_PPM_422M_TILE) testout_tile_422_Q95_$$i\x$$i.ppm; \
done
rm -f testout_tile_GRAY_* testout_tile_420_* testout_tile_422_* testout_tile_444_* testout_tile.ppm
echo GREAT SUCCESS!
endif
if CROSS_COMPILING
bittest: testclean
else
bittest: testclean all
endif
# These tests are carefully crafted to provide full coverage of as many of the
# underlying algorithms as possible (including all of the SIMD-accelerated
# ones.)
# CC: null SAMP: fullsize FDCT: islow ENT: huff
./cjpeg -revert -rgb -dct int -outfile testout_rgb_islow.jpg $(srcdir)/testimages/testorig.ppm
md5/md5cmp $(MD5_JPEG_RGB_ISLOW) testout_rgb_islow.jpg
# CC: null SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -ppm -outfile testout_rgb_islow.ppm testout_rgb_islow.jpg
md5/md5cmp $(MD5_PPM_RGB_ISLOW) testout_rgb_islow.ppm
rm -f testout_rgb_islow.ppm
if WITH_12BIT
rm -f testout_rgb_islow.jpg
else
# CC: RGB->RGB565 SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -rgb565 -dither none -bmp -outfile testout_rgb_islow_565.bmp testout_rgb_islow.jpg
md5/md5cmp $(MD5_BMP_RGB_ISLOW_565) testout_rgb_islow_565.bmp
rm -f testout_rgb_islow_565.bmp
# CC: RGB->RGB565 (dithered) SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -rgb565 -bmp -outfile testout_rgb_islow_565D.bmp testout_rgb_islow.jpg
md5/md5cmp $(MD5_BMP_RGB_ISLOW_565D) testout_rgb_islow_565D.bmp
rm -f testout_rgb_islow_565D.bmp testout_rgb_islow.jpg
endif
# CC: RGB->YCC SAMP: fullsize/h2v1 FDCT: ifast ENT: 2-pass huff
./cjpeg -revert -sample 2x1 -dct fast -opt -outfile testout_422_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
md5/md5cmp $(MD5_JPEG_422_IFAST_OPT) testout_422_ifast_opt.jpg
# CC: YCC->RGB SAMP: fullsize/h2v1 fancy IDCT: ifast ENT: huff
./djpeg -dct fast -outfile testout_422_ifast.ppm testout_422_ifast_opt.jpg
md5/md5cmp $(MD5_PPM_422_IFAST) testout_422_ifast.ppm
rm -f testout_422_ifast.ppm
# CC: YCC->RGB SAMP: h2v1 merged IDCT: ifast ENT: huff
./djpeg -dct fast -nosmooth -outfile testout_422m_ifast.ppm testout_422_ifast_opt.jpg
md5/md5cmp $(MD5_PPM_422M_IFAST) testout_422m_ifast.ppm
rm -f testout_422m_ifast.ppm
if WITH_12BIT
rm -f testout_422_ifast_opt.jpg
else
# CC: YCC->RGB565 SAMP: h2v1 merged IDCT: ifast ENT: huff
./djpeg -dct int -nosmooth -rgb565 -dither none -bmp -outfile testout_422m_ifast_565.bmp testout_422_ifast_opt.jpg
md5/md5cmp $(MD5_BMP_422M_IFAST_565) testout_422m_ifast_565.bmp
rm -f testout_422m_ifast_565.bmp
# CC: YCC->RGB565 (dithered) SAMP: h2v1 merged IDCT: ifast ENT: huff
./djpeg -dct int -nosmooth -rgb565 -bmp -outfile testout_422m_ifast_565D.bmp testout_422_ifast_opt.jpg
md5/md5cmp $(MD5_BMP_422M_IFAST_565D) testout_422m_ifast_565D.bmp
rm -f testout_422m_ifast_565D.bmp testout_422_ifast_opt.jpg
endif
# CC: RGB->YCC SAMP: fullsize/h2v2 FDCT: ifast ENT: prog huff
./cjpeg -revert -sample 2x2 -quality 100 -dct fast -prog -outfile testout_420_q100_ifast_prog.jpg $(srcdir)/testimages/testorig.ppm
md5/md5cmp $(MD5_JPEG_420_IFAST_Q100_PROG) testout_420_q100_ifast_prog.jpg
# CC: YCC->RGB SAMP: fullsize/h2v2 fancy IDCT: ifast ENT: prog huff
./djpeg -dct fast -outfile testout_420_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
md5/md5cmp $(MD5_PPM_420_Q100_IFAST) testout_420_q100_ifast.ppm
rm -f testout_420_q100_ifast.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: ifast ENT: prog huff
./djpeg -dct fast -nosmooth -outfile testout_420m_q100_ifast.ppm testout_420_q100_ifast_prog.jpg
md5/md5cmp $(MD5_PPM_420M_Q100_IFAST) testout_420m_q100_ifast.ppm
rm -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
md5/md5cmp $(MD5_JPEG_GRAY_ISLOW) testout_gray_islow.jpg
# CC: Gray->Gray SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -outfile testout_gray_islow.ppm testout_gray_islow.jpg
md5/md5cmp $(MD5_PPM_GRAY_ISLOW) testout_gray_islow.ppm
rm -f testout_gray_islow.ppm
# CC: Gray->RGB SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -rgb -outfile testout_gray_islow_rgb.ppm testout_gray_islow.jpg
md5/md5cmp $(MD5_PPM_GRAY_ISLOW_RGB) testout_gray_islow_rgb.ppm
rm -f testout_gray_islow_rgb.ppm
if WITH_12BIT
rm -f testout_gray_islow.jpg
else
# CC: Gray->RGB565 SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -rgb565 -dither none -bmp -outfile testout_gray_islow_565.bmp testout_gray_islow.jpg
md5/md5cmp $(MD5_BMP_GRAY_ISLOW_565) testout_gray_islow_565.bmp
rm -f testout_gray_islow_565.bmp
# CC: Gray->RGB565 (dithered) SAMP: fullsize IDCT: islow ENT: huff
./djpeg -dct int -rgb565 -bmp -outfile testout_gray_islow_565D.bmp testout_gray_islow.jpg
md5/md5cmp $(MD5_BMP_GRAY_ISLOW_565D) testout_gray_islow_565D.bmp
rm -f testout_gray_islow_565D.bmp testout_gray_islow.jpg
endif
# CC: RGB->YCC SAMP: fullsize smooth/h2v2 smooth FDCT: islow
# ENT: 2-pass huff
./cjpeg -revert -sample 2x2 -smooth 1 -dct int -opt -outfile testout_420s_ifast_opt.jpg $(srcdir)/testimages/testorig.ppm
md5/md5cmp $(MD5_JPEG_420S_IFAST_OPT) testout_420s_ifast_opt.jpg
rm -f testout_420s_ifast_opt.jpg
# The output of the floating point tests is not validated by default, because
# the output differs depending on the type of floating point math used, and
# this is only deterministic if the DCT/IDCT are implemented using SIMD
# instructions on a particular platform. Pass one of the following on the make
# command line to validate the floating point tests against one of the expected
# results:
#
# FLOATTEST=sse validate against the expected results from the libjpeg-turbo
# SSE SIMD extensions
# FLOATTEST=32bit validate against the expected results from the C code
# when running on a 32-bit FPU (or when SSE is being used for
# floating point math, which is generally the default with
# x86-64 compilers)
# FLOATTEST=64bit validate against the exepected results from the C code
# 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 $(srcdir)/testimages/testorig.ppm
if [ "${FLOATTEST}" = "sse" ]; then \
md5/md5cmp $(MD5_JPEG_3x2_FLOAT_PROG_SSE) testout_3x2_float_prog.jpg; \
elif [ "${FLOATTEST}" = "32bit" -o "${FLOATTEST}" = "64bit" ]; then \
md5/md5cmp $(MD5_JPEG_3x2_FLOAT_PROG_32BIT) testout_3x2_float_prog.jpg; \
fi
# CC: YCC->RGB SAMP: fullsize/int IDCT: float ENT: prog huff
./djpeg -dct float -outfile testout_3x2_float.ppm testout_3x2_float_prog.jpg
if [ "${FLOATTEST}" = "sse" ]; then \
md5/md5cmp $(MD5_PPM_3x2_FLOAT_SSE) testout_3x2_float.ppm; \
elif [ "${FLOATTEST}" = "32bit" ]; then \
md5/md5cmp $(MD5_PPM_3x2_FLOAT_32BIT) testout_3x2_float.ppm; \
elif [ "${FLOATTEST}" = "64bit" ]; then \
md5/md5cmp $(MD5_PPM_3x2_FLOAT_64BIT) testout_3x2_float.ppm; \
fi
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
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
md5/md5cmp $(MD5_PPM_3x2_IFAST) testout_3x2_ifast.ppm
rm -f testout_3x2_ifast.ppm testout_3x2_ifast_prog.jpg
if WITH_ARITH_ENC
# CC: YCC->RGB SAMP: fullsize/h2v2 FDCT: islow ENT: arith
./cjpeg -revert -dct int -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testorig.ppm
md5/md5cmp $(MD5_JPEG_420_ISLOW_ARI) testout_420_islow_ari.jpg
rm -f testout_420_islow_ari.jpg
./jpegtran -revert -arithmetic -outfile testout_420_islow_ari.jpg $(srcdir)/testimages/testimgint.jpg
md5/md5cmp $(MD5_JPEG_420_ISLOW_ARI) testout_420_islow_ari.jpg
rm -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
md5/md5cmp $(MD5_JPEG_444_ISLOW_PROGARI) testout_444_islow_progari.jpg
rm -f testout_444_islow_progari.jpg
endif
if WITH_ARITH_DEC
# CC: RGB->YCC SAMP: h2v2 merged IDCT: ifast ENT: arith
./djpeg -fast -ppm -outfile testout_420m_ifast_ari.ppm $(srcdir)/testimages/testimgari.jpg
md5/md5cmp $(MD5_PPM_420M_IFAST_ARI) testout_420m_ifast_ari.ppm
rm -f testout_420m_ifast_ari.ppm
./jpegtran -revert -outfile testout_420_islow.jpg $(srcdir)/testimages/testimgari.jpg
md5/md5cmp $(MD5_JPEG_420_ISLOW) testout_420_islow.jpg
rm -f testout_420_islow.jpg
endif
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 16x16 islow ENT: huff
./djpeg -dct int -scale 2/1 -nosmooth -ppm -outfile testout_420m_islow_2_1.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_2_1) testout_420m_islow_2_1.ppm
rm -f testout_420m_islow_2_1.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 15x15 islow ENT: huff
./djpeg -dct int -scale 15/8 -nosmooth -ppm -outfile testout_420m_islow_15_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_15_8) testout_420m_islow_15_8.ppm
rm -f testout_420m_islow_15_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 13x13 islow ENT: huff
./djpeg -dct int -scale 13/8 -nosmooth -ppm -outfile testout_420m_islow_13_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_13_8) testout_420m_islow_13_8.ppm
rm -f testout_420m_islow_13_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 11x11 islow ENT: huff
./djpeg -dct int -scale 11/8 -nosmooth -ppm -outfile testout_420m_islow_11_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_11_8) testout_420m_islow_11_8.ppm
rm -f testout_420m_islow_11_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 9x9 islow ENT: huff
./djpeg -dct int -scale 9/8 -nosmooth -ppm -outfile testout_420m_islow_9_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_9_8) testout_420m_islow_9_8.ppm
rm -f testout_420m_islow_9_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 7x7 islow/14x14 islow ENT: huff
./djpeg -dct int -scale 7/8 -nosmooth -ppm -outfile testout_420m_islow_7_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_7_8) testout_420m_islow_7_8.ppm
rm -f testout_420m_islow_7_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 6x6 islow/12x12 islow ENT: huff
./djpeg -dct int -scale 3/4 -nosmooth -ppm -outfile testout_420m_islow_3_4.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_3_4) testout_420m_islow_3_4.ppm
rm -f testout_420m_islow_3_4.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 5x5 islow/10x10 islow ENT: huff
./djpeg -dct int -scale 5/8 -nosmooth -ppm -outfile testout_420m_islow_5_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_5_8) testout_420m_islow_5_8.ppm
rm -f testout_420m_islow_5_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 4x4 islow/8x8 islow ENT: huff
./djpeg -dct int -scale 1/2 -nosmooth -ppm -outfile testout_420m_islow_1_2.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_1_2) testout_420m_islow_1_2.ppm
rm -f testout_420m_islow_1_2.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 3x3 islow/6x6 islow ENT: huff
./djpeg -dct int -scale 3/8 -nosmooth -ppm -outfile testout_420m_islow_3_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_3_8) testout_420m_islow_3_8.ppm
rm -f testout_420m_islow_3_8.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 2x2 islow/4x4 islow ENT: huff
./djpeg -dct int -scale 1/4 -nosmooth -ppm -outfile testout_420m_islow_1_4.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_1_4) testout_420m_islow_1_4.ppm
rm -f testout_420m_islow_1_4.ppm
# CC: YCC->RGB SAMP: h2v2 merged IDCT: 1x1 islow/2x2 islow ENT: huff
./djpeg -dct int -scale 1/8 -nosmooth -ppm -outfile testout_420m_islow_1_8.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420M_ISLOW_1_8) testout_420m_islow_1_8.ppm
rm -f testout_420m_islow_1_8.ppm
if WITH_12BIT
else
# CC: YCC->RGB (dithered) SAMP: h2v2 fancy IDCT: islow ENT: huff
./djpeg -dct int -colors 256 -bmp -outfile testout_420_islow_256.bmp $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_BMP_420_ISLOW_256) testout_420_islow_256.bmp
rm -f testout_420_islow_256.bmp
# CC: YCC->RGB565 SAMP: h2v2 fancy IDCT: islow ENT: huff
./djpeg -dct int -rgb565 -dither none -bmp -outfile testout_420_islow_565.bmp $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_BMP_420_ISLOW_565) testout_420_islow_565.bmp
rm -f testout_420_islow_565.bmp
# CC: YCC->RGB565 (dithered) SAMP: h2v2 fancy IDCT: islow ENT: huff
./djpeg -dct int -rgb565 -bmp -outfile testout_420_islow_565D.bmp $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_BMP_420_ISLOW_565D) testout_420_islow_565D.bmp
rm -f testout_420_islow_565D.bmp
# CC: YCC->RGB565 SAMP: h2v2 merged IDCT: islow ENT: huff
./djpeg -dct int -nosmooth -rgb565 -dither none -bmp -outfile testout_420m_islow_565.bmp $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_BMP_420M_ISLOW_565) testout_420m_islow_565.bmp
rm -f testout_420m_islow_565.bmp
# CC: YCC->RGB565 (dithered) SAMP: h2v2 merged IDCT: islow ENT: huff
./djpeg -dct int -nosmooth -rgb565 -bmp -outfile testout_420m_islow_565D.bmp $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_BMP_420M_ISLOW_565D) testout_420m_islow_565D.bmp
rm -f testout_420m_islow_565D.bmp
endif
# Partial decode tests. These tests are designed to cover all of the possible
# code paths in jpeg_skip_scanlines().
# Context rows: Yes Intra-iMCU row: Yes iMCU row prefetch: No ENT: huff
./djpeg -dct int -skip 15,31 -ppm -outfile testout_420_islow_skip15,31.ppm $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_PPM_420_ISLOW_SKIP15_31) testout_420_islow_skip15,31.ppm
rm -f testout_420_islow_skip15,31.ppm
# Context rows: Yes Intra-iMCU row: No iMCU row prefetch: Yes ENT: arith
if WITH_ARITH_DEC
./djpeg -dct int -skip 16,139 -ppm -outfile testout_420_islow_ari_skip16,139.ppm $(srcdir)/testimages/testimgari.jpg
md5/md5cmp $(MD5_PPM_420_ISLOW_ARI_SKIP16_139) testout_420_islow_ari_skip16,139.ppm
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
./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
# Context rows: Yes Intra-iMCU row: No iMCU row prefetch: No ENT: arith
if WITH_ARITH_DEC
./djpeg -dct int -crop 53x53+4+4 -ppm -outfile testout_420_islow_ari_crop53x53,4,4.ppm $(srcdir)/testimages/testimgari.jpg
md5/md5cmp $(MD5_PPM_420_ISLOW_ARI_CROP53x53_4_4) testout_420_islow_ari_crop53x53,4,4.ppm
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
./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
./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
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
rm -f testout_444_islow_ari_crop37x37,0,0.ppm
endif
rm -f testout_444_islow_ari.jpg
endif
./jpegtran -revert -crop 120x90+20+50 -transpose -perfect -outfile testout_crop.jpg $(srcdir)/testimages/$(TESTORIG)
md5/md5cmp $(MD5_JPEG_CROP) testout_crop.jpg
rm -f testout_crop.jpg
echo GREAT SUCCESS!
testclean:
# Run tests
test: check-local
check-local:
rm -f testout*
rm -f *_GRAY_*.bmp
rm -f *_GRAY_*.png
rm -f *_GRAY_*.ppm
rm -f *_GRAY_*.jpg
rm -f *_GRAY.yuv
rm -f *_420_*.bmp
rm -f *_420_*.png
rm -f *_420_*.ppm
rm -f *_420_*.jpg
rm -f *_420.yuv
rm -f *_422_*.bmp
rm -f *_422_*.png
rm -f *_422_*.ppm
rm -f *_422_*.jpg
rm -f *_422.yuv
rm -f *_444_*.bmp
rm -f *_444_*.png
rm -f *_444_*.ppm
rm -f *_444_*.jpg
rm -f *_444.yuv
rm -f *_440_*.bmp
rm -f *_440_*.png
rm -f *_440_*.ppm
rm -f *_440_*.jpg
rm -f *_440.yuv
rm -f *_411_*.bmp
rm -f *_411_*.png
rm -f *_411_*.ppm
rm -f *_411_*.jpg
rm -f *_411.yuv
tjtest:
sh ./tjbenchtest
sh ./tjbenchtest -alloc
sh ./tjbenchtest -yuv
sh ./tjbenchtest -yuv -alloc
if WITH_JAVA
sh ./tjbenchtest.java
sh ./tjbenchtest.java -yuv
endif
pkgscripts/mozjpeg.spec: pkgscripts/mozjpeg.spec.tmpl
cat pkgscripts/mozjpeg.spec.tmpl | sed s@%{__prefix}@$(prefix)@g | \
sed s@%{__bindir}@$(bindir)@g | sed s@%{__datadir}@$(datadir)@g | \
sed s@%{__docdir}@$(docdir)@g | sed s@%{__includedir}@$(includedir)@g | \
sed s@%{__libdir}@$(libdir)@g | sed s@%{__mandir}@$(mandir)@g \
> pkgscripts/mozjpeg.spec
rpm: all pkgscripts/mozjpeg.spec
TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
mkdir -p $$TMPDIR/RPMS; \
ln -fs `pwd` $$TMPDIR/BUILD; \
rm -f ${PKGNAME}-${VERSION}.${RPMARCH}.rpm; \
rpmbuild -bb --define "_blddir $$TMPDIR/buildroot" \
--define "_topdir $$TMPDIR" \
--target ${RPMARCH} pkgscripts/mozjpeg.spec; \
cp $$TMPDIR/RPMS/${RPMARCH}/${PKGNAME}-${VERSION}-${BUILD}.${RPMARCH}.rpm \
${PKGNAME}-${VERSION}.${RPMARCH}.rpm; \
rm -rf $$TMPDIR
srpm: dist-gzip pkgscripts/mozjpeg.spec
TMPDIR=`mktemp -d /tmp/${PACKAGE_NAME}-build.XXXXXX`; \
mkdir -p $$TMPDIR/RPMS; \
mkdir -p $$TMPDIR/SRPMS; \
mkdir -p $$TMPDIR/BUILD; \
mkdir -p $$TMPDIR/SOURCES; \
mkdir -p $$TMPDIR/SPECS; \
rm -f ${PKGNAME}-${VERSION}.src.rpm; \
cp ${PACKAGE_NAME}-${VERSION}.tar.gz $$TMPDIR/SOURCES; \
cat pkgscripts/mozjpeg.spec | sed s/%{_blddir}/%{_tmppath}/g \
| sed s/#--\>//g \
> $$TMPDIR/SPECS/mozjpeg.spec; \
rpmbuild -bs --define "_topdir $$TMPDIR" $$TMPDIR/SPECS/mozjpeg.spec; \
cp $$TMPDIR/SRPMS/${PKGNAME}-${VERSION}-${BUILD}.src.rpm \
${PKGNAME}-${VERSION}.src.rpm; \
rm -rf $$TMPDIR
pkgscripts/makedpkg: pkgscripts/makedpkg.tmpl
cat pkgscripts/makedpkg.tmpl | sed s@%{__prefix}@$(prefix)@g | \
sed s@%{__docdir}@$(docdir)@g | sed s@%{__libdir}@$(libdir)@g \
> pkgscripts/makedpkg
deb: all pkgscripts/makedpkg
sh pkgscripts/makedpkg
pkgscripts/uninstall: pkgscripts/uninstall.tmpl
cat pkgscripts/uninstall.tmpl | sed s@%{__prefix}@$(prefix)@g | \
sed s@%{__bindir}@$(bindir)@g | sed s@%{__datadir}@$(datadir)@g | \
sed s@%{__includedir}@$(includedir)@g | sed s@%{__libdir}@$(libdir)@g | \
sed s@%{__mandir}@$(mandir)@g > pkgscripts/uninstall
pkgscripts/makemacpkg: pkgscripts/makemacpkg.tmpl
cat pkgscripts/makemacpkg.tmpl | sed s@%{__prefix}@$(prefix)@g | \
sed s@%{__bindir}@$(bindir)@g | sed s@%{__docdir}@$(docdir)@g | \
sed s@%{__libdir}@$(libdir)@g > pkgscripts/makemacpkg
if X86_64
udmg: all pkgscripts/makemacpkg pkgscripts/uninstall
sh pkgscripts/makemacpkg -build32 ${BUILDDIR32}
iosdmg: all pkgscripts/makemacpkg pkgscripts/uninstall
sh pkgscripts/makemacpkg -build32 ${BUILDDIR32} -buildarmv6 ${BUILDDIRARMV6} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
else
iosdmg: all pkgscripts/makemacpkg pkgscripts/uninstall
sh pkgscripts/makemacpkg -buildarmv6 ${BUILDDIRARMV6} -buildarmv7 ${BUILDDIRARMV7} -buildarmv7s ${BUILDDIRARMV7S} -buildarmv8 ${BUILDDIRARMV8} -lipo "${LIPO}"
endif
dmg: all pkgscripts/makemacpkg pkgscripts/uninstall
sh pkgscripts/makemacpkg
pkgscripts/makecygwinpkg: pkgscripts/makecygwinpkg.tmpl
cat pkgscripts/makecygwinpkg.tmpl | sed s@%{__prefix}@$(prefix)@g | \
sed s@%{__docdir}@$(docdir)@g | sed s@%{__libdir}@$(libdir)@g \
> pkgscripts/makecygwinpkg
cygwinpkg: all pkgscripts/makecygwinpkg
sh pkgscripts/makecygwinpkg
./djpeg -dct int -ppm -outfile testout.ppm $(srcdir)/testorig.jpg
./djpeg -dct int -bmp -colors 256 -outfile testout.bmp $(srcdir)/testorig.jpg
./cjpeg -dct int -outfile testout.jpg $(srcdir)/testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg $(srcdir)/testimg.ppm
./jpegtran -outfile testoutt.jpg $(srcdir)/testprog.jpg
cmp $(srcdir)/testimg.ppm testout.ppm
cmp $(srcdir)/testimg.bmp testout.bmp
cmp $(srcdir)/testimg.jpg testout.jpg
cmp $(srcdir)/testimg.ppm testoutp.ppm
cmp $(srcdir)/testimgp.jpg testoutp.jpg
cmp $(srcdir)/testorig.jpg testoutt.jpg

1072
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File diff suppressed because it is too large Load Diff

195
README.ijg → README
View File

@@ -1,16 +1,12 @@
libjpeg-turbo note: This file has been modified by The libjpeg-turbo Project
to include only information relevant to libjpeg-turbo, to wordsmith certain
sections, and to remove impolitic language that existed in the libjpeg v8
README. It is included only for reference. Please see README.md for
information specific to libjpeg-turbo.
The Independent JPEG Group's JPEG software
==========================================
This distribution contains a release of the Independent JPEG Group's free JPEG
software. You are welcome to redistribute this software and to use it for any
purpose, subject to the conditions under LEGAL ISSUES, below.
README for release 9c of 14-Jan-2018
====================================
This distribution contains the ninth public release of the Independent JPEG
Group's free JPEG software. You are welcome to redistribute this software and
to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
This software is the work of Tom Lane, Guido Vollbeding, Philip Gladstone,
Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson,
@@ -18,7 +14,7 @@ Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers,
and other members of the Independent JPEG Group.
IJG is not affiliated with the ISO/IEC JTC1/SC29/WG1 standards committee
(also known as JPEG, together with ITU-T SG16).
(previously known as JPEG, together with ITU-T SG16).
DOCUMENTATION ROADMAP
@@ -30,12 +26,14 @@ OVERVIEW General description of JPEG and the IJG software.
LEGAL ISSUES Copyright, lack of warranty, terms of distribution.
REFERENCES Where to learn more about JPEG.
ARCHIVE LOCATIONS Where to find newer versions of this software.
ACKNOWLEDGMENTS Special thanks.
FILE FORMAT WARS Software *not* to get.
TO DO Plans for future IJG releases.
Other documentation files in the distribution are:
User documentation:
install.txt How to configure and install the IJG software.
usage.txt Usage instructions for cjpeg, djpeg, jpegtran,
rdjpgcom, and wrjpgcom.
*.1 Unix-style man pages for programs (same info as usage.txt).
@@ -45,11 +43,12 @@ Programmer and internal documentation:
libjpeg.txt How to use the JPEG library in your own programs.
example.c Sample code for calling the JPEG library.
structure.txt Overview of the JPEG library's internal structure.
filelist.txt Road map of IJG files.
coderules.txt Coding style rules --- please read if you contribute code.
Please read at least usage.txt. Some information can also be found in the JPEG
FAQ (Frequently Asked Questions) article. See ARCHIVE LOCATIONS below to find
out where to obtain the FAQ article.
Please read at least the files install.txt and usage.txt. Some information
can also be found in the JPEG FAQ (Frequently Asked Questions) article. See
ARCHIVE LOCATIONS below to find out where to obtain the FAQ article.
If you want to understand how the JPEG code works, we suggest reading one or
more of the REFERENCES, then looking at the documentation files (in roughly
@@ -61,19 +60,7 @@ OVERVIEW
This package contains C software to implement JPEG image encoding, decoding,
and transcoding. JPEG (pronounced "jay-peg") is a standardized compression
method for full-color and grayscale images. JPEG's strong suit is compressing
photographic images or other types of images that have smooth color and
brightness transitions between neighboring pixels. Images with sharp lines or
other abrupt features may not compress well with JPEG, and a higher JPEG
quality may have to be used to avoid visible compression artifacts with such
images.
JPEG is lossy, meaning that the output pixels are not necessarily identical to
the input pixels. However, on photographic content and other "smooth" images,
very good compression ratios can be obtained with no visible compression
artifacts, and extremely high compression ratios are possible if you are
willing to sacrifice image quality (by reducing the "quality" setting in the
compressor.)
method for full-color and grayscale images.
This software implements JPEG baseline, extended-sequential, and progressive
compression processes. Provision is made for supporting all variants of these
@@ -128,7 +115,7 @@ with respect to this software, its quality, accuracy, merchantability, or
fitness for a particular purpose. This software is provided "AS IS", and you,
its user, assume the entire risk as to its quality and accuracy.
This software is copyright (C) 1991-2016, Thomas G. Lane, Guido Vollbeding.
This software is copyright (C) 1991-2018, Thomas G. Lane, Guido Vollbeding.
All Rights Reserved except as specified below.
Permission is hereby granted to use, copy, modify, and distribute this
@@ -172,11 +159,6 @@ to produce "uncompressed GIFs". This technique does not use the LZW
algorithm; the resulting GIF files are larger than usual, but are readable
by all standard GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of
CompuServe Incorporated. GIF(sm) is a Service Mark property of
CompuServe Incorporated."
REFERENCES
==========
@@ -210,6 +192,14 @@ Image Data Compression Standard" by William B. Pennebaker and Joan L.
Mitchell, published by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1.
Price US$59.95, 638 pp. The book includes the complete text of the ISO JPEG
standards (DIS 10918-1 and draft DIS 10918-2).
Although this is by far the most detailed and comprehensive exposition of
JPEG publicly available, we point out that it is still missing an explanation
of the most essential properties and algorithms of the underlying DCT
technology.
If you think that you know about DCT-based JPEG after reading this book,
then you are in delusion. The real fundamentals and corresponding potential
of DCT-based JPEG are not publicly known so far, and that is the reason for
all the mistaken developments taking place in the image coding domain.
The original JPEG standard is divided into two parts, Part 1 being the actual
specification, while Part 2 covers compliance testing methods. Part 1 is
@@ -218,16 +208,25 @@ Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
10918-1, ITU-T T.81. Part 2 is titled "Digital Compression and Coding of
Continuous-tone Still Images, Part 2: Compliance testing" and has document
numbers ISO/IEC IS 10918-2, ITU-T T.83.
IJG JPEG 8 introduced an implementation of the JPEG SmartScale extension
which is specified in two documents: A contributed document at ITU and ISO
with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced
Image Coding", April 2006, Geneva, Switzerland. The latest version of this
document is Revision 3. And a contributed document ISO/IEC JTC1/SC29/WG1 N
5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany.
IJG JPEG 9 introduces a reversible color transform for improved lossless
compression which is described in a contributed document ISO/IEC JTC1/SC29/
WG1 N 6080 with title "JPEG 9 Lossless Coding", June/July 2012, Paris,
France.
The JPEG standard does not specify all details of an interchangeable file
format. For the omitted details we follow the "JFIF" conventions, revision
1.02. JFIF 1.02 has been adopted as an Ecma International Technical Report
and thus received a formal publication status. It is available as a free
download in PDF format from
http://www.ecma-international.org/publications/techreports/E-TR-098.htm.
A PostScript version of the JFIF document is available at
http://www.ijg.org/files/jfif.ps.gz. There is also a plain text version at
http://www.ijg.org/files/jfif.txt.gz, but it is missing the figures.
format. For the omitted details we follow the "JFIF" conventions, version 2.
JFIF version 1 has been adopted as Recommendation ITU-T T.871 (05/2011) :
Information technology - Digital compression and coding of continuous-tone
still images: JPEG File Interchange Format (JFIF). It is available as a
free download in PDF file format from http://www.itu.int/rec/T-REC-T.871.
A PDF file of the older JFIF document is available at
http://www.w3.org/Graphics/JPEG/jfif3.pdf.
The TIFF 6.0 file format specification can be obtained by FTP from
ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz. The JPEG incorporation scheme
@@ -246,7 +245,9 @@ ARCHIVE LOCATIONS
The "official" archive site for this software is www.ijg.org.
The most recent released version can always be found there in
directory "files".
directory "files". This particular version will be archived as
http://www.ijg.org/files/jpegsrc.v9c.tar.gz, and in Windows-compatible
"zip" archive format as http://www.ijg.org/files/jpegsr9c.zip.
The JPEG FAQ (Frequently Asked Questions) article is a source of some
general information about JPEG.
@@ -259,21 +260,119 @@ with body
send usenet/news.answers/jpeg-faq/part2
ACKNOWLEDGMENTS
===============
Thank to Juergen Bruder for providing me with a copy of the common DCT
algorithm article, only to find out that I had come to the same result
in a more direct and comprehensible way with a more generative approach.
Thank to Istvan Sebestyen and Joan L. Mitchell for inviting me to the
ITU JPEG (Study Group 16) meeting in Geneva, Switzerland.
Thank to Thomas Wiegand and Gary Sullivan for inviting me to the
Joint Video Team (MPEG & ITU) meeting in Geneva, Switzerland.
Thank to Thomas Richter and Daniel Lee for inviting me to the
ISO/IEC JTC1/SC29/WG1 (previously known as JPEG, together with ITU-T SG16)
meeting in Berlin, Germany.
Thank to John Korejwa and Massimo Ballerini for inviting me to
fruitful consultations in Boston, MA and Milan, Italy.
Thank to Hendrik Elstner, Roland Fassauer, Simone Zuck, Guenther
Maier-Gerber, Walter Stoeber, Fred Schmitz, and Norbert Braunagel
for corresponding business development.
Thank to Nico Zschach and Dirk Stelling of the technical support team
at the Digital Images company in Halle for providing me with extra
equipment for configuration tests.
Thank to Richard F. Lyon (then of Foveon Inc.) for fruitful
communication about JPEG configuration in Sigma Photo Pro software.
Thank to Andrew Finkenstadt for hosting the ijg.org site.
Thank to Thomas G. Lane for the original design and development of
this singular software package.
Thank to Lars Goehler, Andreas Heinecke, Sebastian Fuss, Yvonne Roebert,
Andrej Werner, and Ulf-Dietrich Braumann for support and public relations.
FILE FORMAT WARS
================
The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together
with ITU-T SG16) currently promotes different formats containing the name
"JPEG" which are incompatible with original DCT-based JPEG. IJG therefore does
not support these formats (see REFERENCES). Indeed, one of the original
reasons for developing this free software was to help force convergence on
common, interoperable format standards for JPEG files.
The ISO/IEC JTC1/SC29/WG1 standards committee (previously known as JPEG,
together with ITU-T SG16) currently promotes different formats containing
the name "JPEG" which is misleading because these formats are incompatible
with original DCT-based JPEG and are based on faulty technologies.
IJG therefore does not and will not support such momentary mistakes
(see REFERENCES).
There exist also distributions under the name "OpenJPEG" promoting such
kind of formats which is misleading because they don't support original
JPEG images.
We have no sympathy for the promotion of inferior formats. Indeed, one of
the original reasons for developing this free software was to help force
convergence on common, interoperable format standards for JPEG files.
Don't use an incompatible file format!
(In any case, our decoder will remain capable of reading existing JPEG
image files indefinitely.)
The ISO committee pretends to be "responsible for the popular JPEG" in their
public reports which is not true because they don't respond to actual
requirements for the maintenance of the original JPEG specification.
Furthermore, the ISO committee pretends to "ensure interoperability" with
their standards which is not true because their "standards" support only
application-specific and proprietary use cases and contain mathematically
incorrect code.
There are currently different distributions in circulation containing the
name "libjpeg" which is misleading because they don't have the features and
are incompatible with formats supported by actual IJG libjpeg distributions.
One of those fakes is released by members of the ISO committee and just uses
the name of libjpeg for misdirection of people, similar to the abuse of the
name JPEG as described above, while having nothing in common with actual IJG
libjpeg distributions and containing mathematically incorrect code.
The other one claims to be a "derivative" or "fork" of the original libjpeg,
but violates the license conditions as described under LEGAL ISSUES above
and violates basic C programming properties.
We have no sympathy for the release of misleading, incorrect and illegal
distributions derived from obsolete code bases.
Don't use an obsolete code base!
According to the UCC (Uniform Commercial Code) law, IJG has the lawful and
legal right to foreclose on certain standardization bodies and other
institutions or corporations that knowingly perform substantial and
systematic deceptive acts and practices, fraud, theft, and damaging of the
value of the people of this planet without their knowing, willing and
intentional consent.
The titles, ownership, and rights of these institutions and all their assets
are now duly secured and held in trust for the free people of this planet.
People of the planet, on every country, may have a financial interest in
the assets of these former principals, agents, and beneficiaries of the
foreclosed institutions and corporations.
IJG asserts what is: that each man, woman, and child has unalienable value
and rights granted and deposited in them by the Creator and not any one of
the people is subordinate to any artificial principality, corporate fiction
or the special interest of another without their appropriate knowing,
willing and intentional consent made by contract or accommodation agreement.
IJG expresses that which already was.
The people have already determined and demanded that public administration
entities, national governments, and their supporting judicial systems must
be fully transparent, accountable, and liable.
IJG has secured the value for all concerned free people of the planet.
A partial list of foreclosed institutions and corporations ("Hall of Shame")
is currently prepared and will be published later.
TO DO
=====
Version 9 is the second release of a new generation JPEG standard
to overcome the limitations of the original JPEG specification,
and is the first true source reference JPEG codec.
More features are being prepared for coming releases...
Please send bug reports, offers of help, etc. to jpeg-info@jpegclub.org.

194
README-mozilla.txt
View File

@@ -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

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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.

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Mozilla JPEG Encoder Project
============================
MozJPEG reduces file sizes of JPEG images while retaining quality and compatibility with the vast majority of the world's deployed decoders.
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.
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.
## Features
* Progressive encoding with "jpegrescan" optimization. It can be applied to any JPEG file (with `jpegtran`) to losslessly reduce file size.
* Trellis quantization. When converting other formats to JPEG it maximizes quality/filesize ratio.
* Comes with new quantization table presets, e.g. tuned for high-resolution displays.
* Fully compatible with all web browsers.
* Can be seamlessly integrated into any program using libjpeg.
## Releases
* [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/))
* [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/)

254
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# AC_PROG_NASM
# --------------------------
# Check that NASM exists and determine flags
AC_DEFUN([AC_PROG_NASM],[
AC_ARG_VAR(NASM, [NASM command (used to build the x86/x86-64 SIMD code)])
if test "x$NASM" = "x"; then
AC_CHECK_PROGS(NASM, [nasm nasmw yasm])
test -z "$NASM" && AC_MSG_ERROR([no nasm (Netwide Assembler) found])
fi
AC_MSG_CHECKING([for object file format of host system])
case "$host_os" in
cygwin* | mingw* | pw32* | interix*)
case "$host_cpu" in
x86_64)
objfmt='Win64-COFF'
;;
*)
objfmt='Win32-COFF'
;;
esac
;;
msdosdjgpp* | go32*)
objfmt='COFF'
;;
os2-emx*) # not tested
objfmt='MSOMF' # obj
;;
linux*coff* | linux*oldld*)
objfmt='COFF' # ???
;;
linux*aout*)
objfmt='a.out'
;;
linux*)
case "$host_cpu" in
x86_64)
objfmt='ELF64'
;;
*)
objfmt='ELF'
;;
esac
;;
kfreebsd* | freebsd* | netbsd* | openbsd*)
if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then
objfmt='BSD-a.out'
else
case "$host_cpu" in
x86_64 | amd64)
objfmt='ELF64'
;;
*)
objfmt='ELF'
;;
esac
fi
;;
solaris* | sunos* | sysv* | sco*)
case "$host_cpu" in
x86_64)
objfmt='ELF64'
;;
*)
objfmt='ELF'
;;
esac
;;
darwin* | rhapsody* | nextstep* | openstep* | macos*)
case "$host_cpu" in
x86_64)
objfmt='Mach-O64'
;;
*)
objfmt='Mach-O'
;;
esac
;;
*)
objfmt='ELF ?'
;;
esac
AC_MSG_RESULT([$objfmt])
if test "$objfmt" = 'ELF ?'; then
objfmt='ELF'
AC_MSG_WARN([unexpected host system. assumed that the format is $objfmt.])
fi
AC_MSG_CHECKING([for object file format specifier (NAFLAGS) ])
case "$objfmt" in
MSOMF) NAFLAGS='-fobj -DOBJ32';;
Win32-COFF) NAFLAGS='-fwin32 -DWIN32';;
Win64-COFF) NAFLAGS='-fwin64 -DWIN64 -D__x86_64__';;
COFF) NAFLAGS='-fcoff -DCOFF';;
a.out) NAFLAGS='-faout -DAOUT';;
BSD-a.out) NAFLAGS='-faoutb -DAOUT';;
ELF) NAFLAGS='-felf -DELF';;
ELF64) NAFLAGS='-felf64 -DELF -D__x86_64__';;
RDF) NAFLAGS='-frdf -DRDF';;
Mach-O) NAFLAGS='-fmacho -DMACHO';;
Mach-O64) NAFLAGS='-fmacho64 -DMACHO -D__x86_64__';;
esac
AC_MSG_RESULT([$NAFLAGS])
AC_SUBST([NAFLAGS])
AC_MSG_CHECKING([whether the assembler ($NASM $NAFLAGS) works])
cat > conftest.asm <<EOF
[%line __oline__ "configure"
section .text
global _main,main
_main:
main: xor eax,eax
ret
]EOF
try_nasm='$NASM $NAFLAGS -o conftest.o conftest.asm'
if AC_TRY_EVAL(try_nasm) && test -s conftest.o; then
AC_MSG_RESULT(yes)
else
echo "configure: failed program was:" >&AC_FD_CC
cat conftest.asm >&AC_FD_CC
rm -rf conftest*
AC_MSG_RESULT(no)
AC_MSG_ERROR([installation or configuration problem: assembler cannot create object files.])
fi
AC_MSG_CHECKING([whether the linker accepts assembler output])
try_nasm='${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.o $LIBS 1>&AC_FD_CC'
if AC_TRY_EVAL(try_nasm) && test -s conftest${ac_exeext}; then
rm -rf conftest*
AC_MSG_RESULT(yes)
else
rm -rf conftest*
AC_MSG_RESULT(no)
AC_MSG_ERROR([configuration problem: maybe object file format mismatch.])
fi
])
# AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE
# --------------------------
# Test whether the assembler is suitable and supports NEON instructions
AC_DEFUN([AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE],[
ac_good_gnu_arm_assembler=no
ac_save_CC="$CC"
ac_save_CFLAGS="$CFLAGS"
CFLAGS="$CCASFLAGS -x assembler-with-cpp"
CC="$CCAS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
.text
.fpu neon
.arch armv7a
.object_arch armv4
.arm
pld [r0]
vmovn.u16 d0, q0]])], ac_good_gnu_arm_assembler=yes)
ac_use_gas_preprocessor=no
if test "x$ac_good_gnu_arm_assembler" = "xno" ; then
CC="gas-preprocessor.pl $CCAS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
.text
.fpu neon
.arch armv7a
.object_arch armv4
.arm
pld [r0]
vmovn.u16 d0, q0]])], ac_use_gas_preprocessor=yes)
fi
CFLAGS="$ac_save_CFLAGS"
CC="$ac_save_CC"
if test "x$ac_use_gas_preprocessor" = "xyes" ; then
CCAS="gas-preprocessor.pl $CCAS"
AC_SUBST([CCAS])
ac_good_gnu_arm_assembler=yes
fi
if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then
$1
else
$2
fi
])
# AC_CHECK_COMPATIBLE_MIPSEL_ASSEMBLER_IFELSE
# --------------------------
# Test whether the assembler is suitable and supports MIPS instructions
AC_DEFUN([AC_CHECK_COMPATIBLE_MIPS_ASSEMBLER_IFELSE],[
have_mips_dspr2=no
ac_save_CFLAGS="$CFLAGS"
CFLAGS="$CCASFLAGS -mdspr2"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
int main ()
{
int c = 0, a = 0, b = 0;
__asm__ __volatile__ (
"precr.qb.ph %[c], %[a], %[b] \n\t"
: [c] "=r" (c)
: [a] "r" (a), [b] "r" (b)
);
return c;
}
]])], have_mips_dspr2=yes)
CFLAGS=$ac_save_CFLAGS
if test "x$have_mips_dspr2" = "xyes" ; then
$1
else
$2
fi
])
AC_DEFUN([AC_CHECK_COMPATIBLE_ARM64_ASSEMBLER_IFELSE],[
ac_good_gnu_arm_assembler=no
ac_save_CC="$CC"
ac_save_CFLAGS="$CFLAGS"
CFLAGS="$CCASFLAGS -x assembler-with-cpp"
CC="$CCAS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
.text
MYVAR .req x0
movi v0.16b, #100
mov MYVAR, #100
.unreq MYVAR]])], ac_good_gnu_arm_assembler=yes)
ac_use_gas_preprocessor=no
if test "x$ac_good_gnu_arm_assembler" = "xno" ; then
CC="gas-preprocessor.pl $CCAS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
.text
MYVAR .req x0
movi v0.16b, #100
mov MYVAR, #100
.unreq MYVAR]])], ac_use_gas_preprocessor=yes)
fi
CFLAGS="$ac_save_CFLAGS"
CC="$ac_save_CC"
if test "x$ac_use_gas_preprocessor" = "xyes" ; then
CCAS="gas-preprocessor.pl $CCAS"
AC_SUBST([CCAS])
ac_good_gnu_arm_assembler=yes
fi
if test "x$ac_good_gnu_arm_assembler" = "xyes" ; then
$1
else
$2
fi
])

10277
aclocal.m4 vendored Normal file
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File diff suppressed because it is too large Load Diff

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

334
bmp.c
View File

@@ -1,334 +0,0 @@
/*
* Copyright (C)2011, 2015 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include <errno.h>
#include "cdjpeg.h"
#include <jpeglib.h>
#include <jpegint.h>
#include "tjutil.h"
#include "bmp.h"
/* This duplicates the functionality of the VirtualGL bitmap library using
the components from cjpeg and djpeg */
/* Error handling (based on example in example.c) */
static char errStr[JMSG_LENGTH_MAX]="No error";
struct my_error_mgr
{
struct jpeg_error_mgr pub;
jmp_buf setjmp_buffer;
};
typedef struct my_error_mgr *my_error_ptr;
static void my_error_exit(j_common_ptr cinfo)
{
my_error_ptr myerr=(my_error_ptr)cinfo->err;
(*cinfo->err->output_message)(cinfo);
longjmp(myerr->setjmp_buffer, 1);
}
/* Based on output_message() in jerror.c */
static void my_output_message(j_common_ptr cinfo)
{
(*cinfo->err->format_message)(cinfo, errStr);
}
#define _throw(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s", m); \
retval=-1; goto bailout;}
#define _throwunix(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s\n%s", m, \
strerror(errno)); retval=-1; goto bailout;}
static void pixelconvert(unsigned char *srcbuf, int srcpf, int srcbottomup,
unsigned char *dstbuf, int dstpf, int dstbottomup, int w, int h)
{
unsigned char *srcrowptr=srcbuf, *srccolptr;
int srcps=tjPixelSize[srcpf];
int srcstride=srcbottomup? -w*srcps:w*srcps;
unsigned char *dstrowptr=dstbuf, *dstcolptr;
int dstps=tjPixelSize[dstpf];
int dststride=dstbottomup? -w*dstps:w*dstps;
int row, col;
if(srcbottomup) srcrowptr=&srcbuf[w*srcps*(h-1)];
if(dstbottomup) dstrowptr=&dstbuf[w*dstps*(h-1)];
/* NOTE: These quick & dirty CMYK<->RGB conversion routines are for testing
purposes only. Properly converting between CMYK and RGB requires a color
management system. */
if(dstpf==TJPF_CMYK)
{
for(row=0; row<h; row++, srcrowptr+=srcstride, dstrowptr+=dststride)
{
for(col=0, srccolptr=srcrowptr, dstcolptr=dstrowptr;
col<w; col++, srccolptr+=srcps)
{
double c=1.0-((double)(srccolptr[tjRedOffset[srcpf]])/255.);
double m=1.0-((double)(srccolptr[tjGreenOffset[srcpf]])/255.);
double y=1.0-((double)(srccolptr[tjBlueOffset[srcpf]])/255.);
double k=min(min(c,m),min(y,1.0));
if(k==1.0) c=m=y=0.0;
else
{
c=(c-k)/(1.0-k);
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(m>1.0) m=1.0; 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);
*dstcolptr++=(unsigned char)(255.0-k*255.0+0.5);
}
}
}
else if(srcpf==TJPF_CMYK)
{
for(row=0; row<h; row++, srcrowptr+=srcstride, dstrowptr+=dststride)
{
for(col=0, srccolptr=srcrowptr, dstcolptr=dstrowptr;
col<w; col++, dstcolptr+=dstps)
{
double c=(double)(*srccolptr++);
double m=(double)(*srccolptr++);
double y=(double)(*srccolptr++);
double k=(double)(*srccolptr++);
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(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);
}
}
}
else
{
for(row=0; row<h; row++, srcrowptr+=srcstride, dstrowptr+=dststride)
{
for(col=0, srccolptr=srcrowptr, dstcolptr=dstrowptr;
col<w; col++, srccolptr+=srcps, dstcolptr+=dstps)
{
dstcolptr[tjRedOffset[dstpf]]=srccolptr[tjRedOffset[srcpf]];
dstcolptr[tjGreenOffset[dstpf]]=srccolptr[tjGreenOffset[srcpf]];
dstcolptr[tjBlueOffset[dstpf]]=srccolptr[tjBlueOffset[srcpf]];
}
}
}
}
int loadbmp(char *filename, unsigned char **buf, int *w, int *h,
int dstpf, int bottomup)
{
int retval=0, dstps, srcpf, tempc;
struct jpeg_compress_struct cinfo;
struct my_error_mgr jerr;
cjpeg_source_ptr src;
FILE *file=NULL;
memset(&cinfo, 0, sizeof(struct jpeg_compress_struct));
if(!filename || !buf || !w || !h || dstpf<0 || dstpf>=TJ_NUMPF)
_throw("loadbmp(): Invalid argument");
if((file=fopen(filename, "rb"))==NULL)
_throwunix("loadbmp(): Cannot open input file");
cinfo.err=jpeg_std_error(&jerr.pub);
jerr.pub.error_exit=my_error_exit;
jerr.pub.output_message=my_output_message;
if(setjmp(jerr.setjmp_buffer))
{
/* If we get here, the JPEG code has signaled an error. */
retval=-1; goto bailout;
}
jpeg_create_compress(&cinfo);
if((tempc=getc(file))<0 || ungetc(tempc, file)==EOF)
_throwunix("loadbmp(): Could not read input file")
else if(tempc==EOF) _throw("loadbmp(): Input file contains no data");
if(tempc=='B')
{
if((src=jinit_read_bmp(&cinfo))==NULL)
_throw("loadbmp(): Could not initialize bitmap loader");
}
else if(tempc=='P')
{
if((src=jinit_read_ppm(&cinfo))==NULL)
_throw("loadbmp(): Could not initialize bitmap loader");
}
else _throw("loadbmp(): Unsupported file type");
src->input_file=file;
(*src->start_input)(&cinfo, src);
(*cinfo.mem->realize_virt_arrays)((j_common_ptr)&cinfo);
*w=cinfo.image_width; *h=cinfo.image_height;
if(cinfo.input_components==1 && cinfo.in_color_space==JCS_RGB)
srcpf=TJPF_GRAY;
else srcpf=TJPF_RGB;
dstps=tjPixelSize[dstpf];
if((*buf=(unsigned char *)malloc((*w)*(*h)*dstps))==NULL)
_throw("loadbmp(): Memory allocation failure");
while(cinfo.next_scanline<cinfo.image_height)
{
int i, nlines=(*src->get_pixel_rows)(&cinfo, src);
for(i=0; i<nlines; i++)
{
unsigned char *outbuf; int row;
row=cinfo.next_scanline+i;
if(bottomup) outbuf=&(*buf)[((*h)-row-1)*(*w)*dstps];
else outbuf=&(*buf)[row*(*w)*dstps];
pixelconvert(src->buffer[i], srcpf, 0, outbuf, dstpf, bottomup, *w,
nlines);
}
cinfo.next_scanline+=nlines;
}
(*src->finish_input)(&cinfo, src);
bailout:
jpeg_destroy_compress(&cinfo);
if(file) fclose(file);
if(retval<0 && buf && *buf) {free(*buf); *buf=NULL;}
return retval;
}
int savebmp(char *filename, unsigned char *buf, int w, int h, int srcpf,
int bottomup)
{
int retval=0, srcps, dstpf;
struct jpeg_decompress_struct dinfo;
struct my_error_mgr jerr;
djpeg_dest_ptr dst;
FILE *file=NULL;
char *ptr=NULL;
memset(&dinfo, 0, sizeof(struct jpeg_decompress_struct));
if(!filename || !buf || w<1 || h<1 || srcpf<0 || srcpf>=TJ_NUMPF)
_throw("savebmp(): Invalid argument");
if((file=fopen(filename, "wb"))==NULL)
_throwunix("savebmp(): Cannot open output file");
dinfo.err=jpeg_std_error(&jerr.pub);
jerr.pub.error_exit=my_error_exit;
jerr.pub.output_message=my_output_message;
if(setjmp(jerr.setjmp_buffer))
{
/* If we get here, the JPEG code has signaled an error. */
retval=-1; goto bailout;
}
jpeg_create_decompress(&dinfo);
if(srcpf==TJPF_GRAY)
{
dinfo.out_color_components=dinfo.output_components=1;
dinfo.out_color_space=JCS_GRAYSCALE;
}
else
{
dinfo.out_color_components=dinfo.output_components=3;
dinfo.out_color_space=JCS_RGB;
}
dinfo.image_width=w; dinfo.image_height=h;
dinfo.global_state=DSTATE_READY;
dinfo.scale_num=dinfo.scale_denom=1;
ptr=strrchr(filename, '.');
if(ptr && !strcasecmp(ptr, ".bmp"))
{
if((dst=jinit_write_bmp(&dinfo, 0))==NULL)
_throw("savebmp(): Could not initialize bitmap writer");
}
else
{
if((dst=jinit_write_ppm(&dinfo))==NULL)
_throw("savebmp(): Could not initialize PPM writer");
}
dst->output_file=file;
(*dst->start_output)(&dinfo, dst);
(*dinfo.mem->realize_virt_arrays)((j_common_ptr)&dinfo);
if(srcpf==TJPF_GRAY) dstpf=srcpf;
else dstpf=TJPF_RGB;
srcps=tjPixelSize[srcpf];
while(dinfo.output_scanline<dinfo.output_height)
{
int i, nlines=dst->buffer_height;
for(i=0; i<nlines; i++)
{
unsigned char *inbuf; int row;
row=dinfo.output_scanline+i;
if(bottomup) inbuf=&buf[(h-row-1)*w*srcps];
else inbuf=&buf[row*w*srcps];
pixelconvert(inbuf, srcpf, bottomup, dst->buffer[i], dstpf, 0, w,
nlines);
}
(*dst->put_pixel_rows)(&dinfo, dst, nlines);
dinfo.output_scanline+=nlines;
}
(*dst->finish_output)(&dinfo, dst);
bailout:
jpeg_destroy_decompress(&dinfo);
if(file) fclose(file);
return retval;
}
const char *bmpgeterr(void)
{
return errStr;
}

42
bmp.h
View File

@@ -1,42 +0,0 @@
/*
* Copyright (C)2011 D. R. Commander. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the libjpeg-turbo Project nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __BMP_H__
#define __BMP_H__
#include "./turbojpeg.h"
int loadbmp(char *filename, unsigned char **buf, int *w, int *h, int pf,
int bottomup);
int savebmp(char *filename, unsigned char *buf, int w, int h, int pf,
int bottomup);
const char *bmpgeterr(void);
#endif

29
cderror.h
View File

@@ -2,10 +2,9 @@
* cderror.h
*
* Copyright (C) 1994-1997, Thomas G. Lane.
* Modified 2009 by Guido Vollbeding.
* Modified 2009-2017 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README.ijg
* file.
* For conditions of distribution and use, see the accompanying README file.
*
* This file defines the error and message codes for the cjpeg/djpeg
* applications. These strings are not needed as part of the JPEG library
@@ -34,7 +33,7 @@
typedef enum {
#define JMESSAGE(code,string) code ,
#define JMESSAGE(code,string) code ,
#endif /* JMAKE_ENUM_LIST */
@@ -42,16 +41,16 @@ JMESSAGE(JMSG_FIRSTADDONCODE=1000, NULL) /* Must be first entry! */
#ifdef BMP_SUPPORTED
JMESSAGE(JERR_BMP_BADCMAP, "Unsupported BMP colormap format")
JMESSAGE(JERR_BMP_BADDEPTH, "Only 8- and 24-bit BMP files are supported")
JMESSAGE(JERR_BMP_BADDEPTH, "Only 8-, 24-, and 32-bit BMP files are supported")
JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length")
JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1")
JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB")
JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported")
JMESSAGE(JERR_BMP_EMPTY, "Empty BMP image")
JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM")
JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image")
JMESSAGE(JERR_BMP_OUTOFRANGE, "Numeric value out of range in BMP file")
JMESSAGE(JTRC_BMP, "%ux%u %d-bit BMP image")
JMESSAGE(JTRC_BMP_MAPPED, "%ux%u 8-bit colormapped BMP image")
JMESSAGE(JTRC_BMP_OS2, "%ux%u 24-bit OS2 BMP image")
JMESSAGE(JTRC_BMP_OS2, "%ux%u %d-bit OS2 BMP image")
JMESSAGE(JTRC_BMP_OS2_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image")
#endif /* BMP_SUPPORTED */
@@ -63,7 +62,7 @@ JMESSAGE(JERR_GIF_IMAGENOTFOUND, "Too few images in GIF file")
JMESSAGE(JERR_GIF_NOT, "Not a GIF file")
JMESSAGE(JTRC_GIF, "%ux%ux%d GIF image")
JMESSAGE(JTRC_GIF_BADVERSION,
"Warning: unexpected GIF version number '%c%c%c'")
"Warning: unexpected GIF version number '%c%c%c'")
JMESSAGE(JTRC_GIF_EXTENSION, "Ignoring GIF extension block of type 0x%02x")
JMESSAGE(JTRC_GIF_NONSQUARE, "Caution: nonsquare pixels in input")
JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file")
@@ -75,8 +74,8 @@ JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits")
#ifdef PPM_SUPPORTED
JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB")
JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file")
JMESSAGE(JERR_PPM_TOOLARGE, "Integer value too large in PPM file")
JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file")
JMESSAGE(JERR_PPM_OUTOFRANGE, "Numeric value out of range in PPM file")
JMESSAGE(JTRC_PGM, "%ux%u PGM image")
JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image")
JMESSAGE(JTRC_PPM, "%ux%u PPM image")
@@ -112,22 +111,18 @@ JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled")
#endif /* TARGA_SUPPORTED */
JMESSAGE(JERR_BAD_CMAP_FILE,
"Color map file is invalid or of unsupported format")
"Color map file is invalid or of unsupported format")
JMESSAGE(JERR_TOO_MANY_COLORS,
"Output file format cannot handle %d colormap entries")
"Output file format cannot handle %d colormap entries")
JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed")
#ifdef TARGA_SUPPORTED
JMESSAGE(JERR_UNKNOWN_FORMAT,
"Unrecognized input file format --- perhaps you need -targa")
"Unrecognized input file format --- perhaps you need -targa")
#else
JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format")
#endif
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

79
cdjpeg.c
View File

@@ -1,23 +1,60 @@
/*
* cdjpeg.c
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1991-1997, Thomas G. Lane.
* It was modified by The libjpeg-turbo Project to include only code relevant
* to libjpeg-turbo.
* For conditions of distribution and use, see the accompanying README.ijg
* file.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains common support routines used by the IJG application
* programs (cjpeg, djpeg, jpegtran).
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include <ctype.h> /* to declare isupper(), tolower() */
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include <ctype.h> /* to declare isupper(), tolower() */
#ifdef NEED_SIGNAL_CATCHER
#include <signal.h> /* to declare signal() */
#endif
#ifdef USE_SETMODE
#include <fcntl.h> /* to declare setmode()'s parameter macros */
#include <fcntl.h> /* to declare setmode()'s parameter macros */
/* If you have setmode() but not <io.h>, just delete this line: */
#include <io.h> /* to declare setmode() */
#include <io.h> /* to declare setmode() */
#endif
/*
* Signal catcher to ensure that temporary files are removed before aborting.
* NB: for Amiga Manx C this is actually a global routine named _abort();
* we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus...
*/
#ifdef NEED_SIGNAL_CATCHER
static j_common_ptr sig_cinfo;
void /* must be global for Manx C */
signal_catcher (int signum)
{
if (sig_cinfo != NULL) {
if (sig_cinfo->err != NULL) /* turn off trace output */
sig_cinfo->err->trace_level = 0;
jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */
}
exit(EXIT_FAILURE);
}
GLOBAL(void)
enable_signal_catcher (j_common_ptr cinfo)
{
sig_cinfo = cinfo;
#ifdef SIGINT /* not all systems have SIGINT */
signal(SIGINT, signal_catcher);
#endif
#ifdef SIGTERM /* not all systems have SIGTERM */
signal(SIGTERM, signal_catcher);
#endif
}
#endif
@@ -38,8 +75,8 @@ progress_monitor (j_common_ptr cinfo)
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
@@ -82,24 +119,24 @@ end_progress_monitor (j_common_ptr cinfo)
*/
GLOBAL(boolean)
keymatch (char *arg, const char *keyword, int minchars)
keymatch (char * arg, const char * keyword, int minchars)
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
return FALSE; /* arg longer than keyword, no good */
if (isupper(ca)) /* force arg to lcase (assume ck is already) */
ca = tolower(ca);
if (ca != ck)
return FALSE; /* no good */
nmatched++; /* count matched characters */
return FALSE; /* no good */
nmatched++; /* count matched characters */
}
/* reached end of argument; fail if it's too short for unique abbrev */
if (nmatched < minchars)
return FALSE;
return TRUE; /* A-OK */
return TRUE; /* A-OK */
}
@@ -113,10 +150,10 @@ read_stdin (void)
{
FILE * input_file = stdin;
#ifdef USE_SETMODE /* need to hack file mode? */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdin\n");
exit(EXIT_FAILURE);
@@ -131,10 +168,10 @@ write_stdout (void)
{
FILE * output_file = stdout;
#ifdef USE_SETMODE /* need to hack file mode? */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdout\n");
exit(EXIT_FAILURE);

163
cdjpeg.h
View File

@@ -1,49 +1,40 @@
/*
* cdjpeg.h
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1994-1997, Thomas G. Lane.
* It was modified by The libjpeg-turbo Project to include only code relevant
* to libjpeg-turbo.
* mozjpeg Modifications:
* Copyright (C) 2014, Mozilla Corporation.
* For conditions of distribution and use, see the accompanying README.ijg file.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains common declarations for the sample applications
* cjpeg and djpeg. It is NOT used by the core JPEG library.
*/
#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */
#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */
#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */
#include "jinclude.h"
#include "jpeglib.h"
#include "jerror.h" /* get library error codes too */
#include "cderror.h" /* get application-specific error codes */
#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
*/
typedef struct cjpeg_source_struct *cjpeg_source_ptr;
typedef struct cjpeg_source_struct * cjpeg_source_ptr;
struct cjpeg_source_struct {
void (*start_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
JDIMENSION (*get_pixel_rows) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
void (*finish_input) (j_compress_ptr cinfo, cjpeg_source_ptr sinfo);
JMETHOD(void, start_input, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
JMETHOD(void, finish_input, (j_compress_ptr cinfo,
cjpeg_source_ptr sinfo));
FILE *input_file;
JSAMPARRAY buffer;
JDIMENSION buffer_height;
#if JPEG_RAW_READER
// For reading JPEG
JSAMPARRAY plane_pointer[4];
#endif
jpeg_saved_marker_ptr marker_list;
};
@@ -51,21 +42,24 @@ struct cjpeg_source_struct {
* Object interface for djpeg's output file encoding modules
*/
typedef struct djpeg_dest_struct *djpeg_dest_ptr;
typedef struct djpeg_dest_struct * djpeg_dest_ptr;
struct djpeg_dest_struct {
/* start_output is called after jpeg_start_decompress finishes.
* The color map will be ready at this time, if one is needed.
*/
void (*start_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
JMETHOD(void, start_output, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo));
/* Emit the specified number of pixel rows from the buffer. */
void (*put_pixel_rows) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied);
JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied));
/* Finish up at the end of the image. */
void (*finish_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
JMETHOD(void, finish_output, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo));
/* Target file spec; filled in by djpeg.c after object is created. */
FILE *output_file;
FILE * output_file;
/* Output pixel-row buffer. Created by module init or start_output.
* Width is cinfo->output_width * cinfo->output_components;
@@ -85,72 +79,109 @@ struct djpeg_dest_struct {
*/
struct cdjpeg_progress_mgr {
struct jpeg_progress_mgr pub; /* fields known to JPEG library */
int completed_extra_passes; /* extra passes completed */
int total_extra_passes; /* total extra */
struct jpeg_progress_mgr pub; /* fields known to JPEG library */
int completed_extra_passes; /* extra passes completed */
int total_extra_passes; /* total extra */
/* last printed percentage stored here to avoid multiple printouts */
int percent_done;
};
typedef struct cdjpeg_progress_mgr *cd_progress_ptr;
typedef struct cdjpeg_progress_mgr * cd_progress_ptr;
/* Short forms of external names for systems with brain-damaged linkers. */
#ifdef NEED_SHORT_EXTERNAL_NAMES
#define jinit_read_bmp jIRdBMP
#define jinit_write_bmp jIWrBMP
#define jinit_read_gif jIRdGIF
#define jinit_write_gif jIWrGIF
#define jinit_read_ppm jIRdPPM
#define jinit_write_ppm jIWrPPM
#define jinit_read_rle jIRdRLE
#define jinit_write_rle jIWrRLE
#define jinit_read_targa jIRdTarga
#define jinit_write_targa jIWrTarga
#define read_quant_tables RdQTables
#define read_scan_script RdScnScript
#define set_quality_ratings SetQRates
#define set_quant_slots SetQSlots
#define set_sample_factors SetSFacts
#define read_color_map RdCMap
#define enable_signal_catcher EnSigCatcher
#define start_progress_monitor StProgMon
#define end_progress_monitor EnProgMon
#define read_stdin RdStdin
#define write_stdout WrStdout
#endif /* NEED_SHORT_EXTERNAL_NAMES */
/* Module selection routines for I/O modules. */
EXTERN(cjpeg_source_ptr) jinit_read_bmp (j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_bmp (j_decompress_ptr cinfo,
boolean is_os2);
EXTERN(cjpeg_source_ptr) jinit_read_gif (j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_gif (j_decompress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_jpeg (j_compress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_ppm (j_compress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_png (j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_ppm (j_decompress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_rle (j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_rle (j_decompress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_targa (j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_targa (j_decompress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo,
boolean is_os2));
EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo));
EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo));
EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo));
EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo));
EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo));
/* cjpeg support routines (in rdswitch.c) */
EXTERN(boolean) read_quant_tables (j_compress_ptr cinfo, char *filename,
boolean force_baseline);
EXTERN(boolean) read_scan_script (j_compress_ptr cinfo, char *filename);
EXTERN(boolean) set_quality_ratings (j_compress_ptr cinfo, char *arg,
boolean force_baseline);
EXTERN(boolean) set_quant_slots (j_compress_ptr cinfo, char *arg);
EXTERN(boolean) set_sample_factors (j_compress_ptr cinfo, char *arg);
EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename,
boolean force_baseline));
EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename));
EXTERN(boolean) set_quality_ratings JPP((j_compress_ptr cinfo, char *arg,
boolean force_baseline));
EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg));
EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg));
/* djpeg support routines (in rdcolmap.c) */
EXTERN(void) read_color_map (j_decompress_ptr cinfo, FILE *infile);
EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile));
/* common support routines (in cdjpeg.c) */
EXTERN(void) enable_signal_catcher (j_common_ptr cinfo);
EXTERN(void) start_progress_monitor (j_common_ptr cinfo,
cd_progress_ptr progress);
EXTERN(void) end_progress_monitor (j_common_ptr cinfo);
EXTERN(boolean) keymatch (char *arg, const char *keyword, int minchars);
EXTERN(FILE *) read_stdin (void);
EXTERN(FILE *) write_stdout (void);
EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo));
EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo,
cd_progress_ptr progress));
EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo));
EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars));
EXTERN(FILE *) read_stdin JPP((void));
EXTERN(FILE *) write_stdout JPP((void));
/* miscellaneous useful macros */
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */
#define READ_BINARY "r"
#define WRITE_BINARY "w"
#else
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#ifdef VMS /* VMS is very nonstandard */
#define READ_BINARY "rb", "ctx=stm"
#define WRITE_BINARY "wb", "ctx=stm"
#else /* standard ANSI-compliant case */
#define READ_BINARY "rb"
#define WRITE_BINARY "wb"
#endif
#endif
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#ifndef EXIT_FAILURE /* define exit() codes if not provided */
#define EXIT_FAILURE 1
#endif
#ifndef EXIT_SUCCESS
#ifdef VMS
#define EXIT_SUCCESS 1 /* VMS is very nonstandard */
#else
#define EXIT_SUCCESS 0
#endif
#endif
#ifndef EXIT_WARNING
#ifdef VMS
#define EXIT_WARNING 1 /* VMS is very nonstandard */
#else
#define EXIT_WARNING 2
#endif
#endif

148
change.log
View File

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

182
cjpeg.1
View File

@@ -1,4 +1,4 @@
.TH CJPEG 1 "17 February 2016"
.TH CJPEG 1 "26 July 2015"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
@@ -53,6 +53,12 @@ you'll get a smaller JPEG file that takes less time to process.
Create RGB JPEG file.
Using this switch suppresses the conversion from RGB
colorspace input to the default YCbCr JPEG colorspace.
You can use this switch in combination with the
.BI \-block " N"
switch (see below) for lossless JPEG coding.
See also the
.B \-rgb1
switch below.
.TP
.B \-optimize
Perform optimization of entropy encoding parameters. Without this, default
@@ -67,6 +73,13 @@ decompression are unaffected by
.B \-progressive
Create progressive JPEG file (see below).
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all N from 1 to 16, where M is the destination DCT size, which is 8
by default (see
.BI \-block " N"
switch below).
.TP
.B \-targa
Input file is Targa format. Targa files that contain an "identification"
field will not be automatically recognized by
@@ -85,8 +98,8 @@ reconstructed image: the higher the quality setting, the larger the JPEG file,
and the closer the output image will be to the original input. Normally you
want to use the lowest quality setting (smallest file) that decompresses into
something visually indistinguishable from the original image. For this
purpose the quality setting should generally be between 50 and 95 (the default
is 75) for photographic images. If you see defects at
purpose the quality setting should be between 50 and 95; the default of 75 is
often about right. If you see defects at
.B \-quality
75, then go up 5 or 10 counts at a time until you are happy with the output
image. (The optimal setting will vary from one image to another.)
@@ -94,10 +107,11 @@ image. (The optimal setting will vary from one image to another.)
.B \-quality
100 will generate a quantization table of all 1's, minimizing loss in the
quantization step (but there is still information loss in subsampling, as well
as roundoff error.) For most images, specifying a quality value above
about 95 will increase the size of the compressed file dramatically, and while
the quality gain from these higher quality values is measurable (using metrics
such as PSNR or SSIM), it is rarely perceivable by human vision.
as roundoff error). This setting is mainly of interest for experimental
purposes. Quality values above about 95 are
.B not
recommended for normal use; the compressed file size goes up dramatically for
hardly any gain in output image quality.
.PP
In the other direction, quality values below 50 will produce very small files
of low image quality. Settings around 5 to 10 might be useful in preparing an
@@ -112,35 +126,33 @@ other JPEG programs may be unable to decode the resulting file. Use
.B \-baseline
if you need to ensure compatibility at low quality values.)
.PP
The \fB-quality\fR option has been extended in this version of \fBcjpeg\fR to
support separate quality settings for luminance and chrominance (or, in
general, separate settings for every quantization table slot.) The principle
is the same as chrominance subsampling: since the human eye is more sensitive
to spatial changes in brightness than spatial changes in color, the chrominance
components can be quantized more than the luminance components without
incurring any visible image quality loss. However, unlike subsampling, this
feature reduces data in the frequency domain instead of the spatial domain,
which allows for more fine-grained control. This option is useful in
quality-sensitive applications, for which the artifacts generated by
subsampling may be unacceptable.
.PP
The \fB-quality\fR option accepts a comma-separated list of parameters, which
respectively refer to the quality levels that should be assigned to the
quantization table slots. If there are more q-table slots than parameters,
then the last parameter is replicated. Thus, if only one quality parameter is
given, this is used for both luminance and chrominance (slots 0 and 1,
respectively), preserving the legacy behavior of cjpeg v6b and prior.
More (or customized) quantization tables can be set with the \fB-qtables\fR
option and assigned to components with the \fB-qslots\fR option (see the
"wizard" switches below.)
.PP
JPEG files generated with separate luminance and chrominance quality are fully
compliant with standard JPEG decoders.
.PP
.BR CAUTION:
For this setting to be useful, be sure to pass an argument of \fB-sample 1x1\fR
to \fBcjpeg\fR to disable chrominance subsampling. Otherwise, the default
subsampling level (2x2, AKA "4:2:0") will be used.
The
.B \-quality
option has been extended in IJG version 7 for support of separate quality
settings for luminance and chrominance (or in general, for every provided
quantization table slot). This feature is useful for high-quality
applications which cannot accept the damage of color data by coarse
subsampling settings. You can now easily reduce the color data amount more
smoothly with finer control without separate subsampling. The resulting file
is fully compliant with standard JPEG decoders.
Note that the
.B \-quality
ratings refer to the quantization table slots, and that the last value is
replicated if there are more q-table slots than parameters. The default
q-table slots are 0 for luminance and 1 for chrominance with default tables as
given in the JPEG standard. This is compatible with the old behaviour in case
that only one parameter is given, which is then used for both luminance and
chrominance (slots 0 and 1). More or custom quantization tables can be set
with
.B \-qtables
and assigned to components with
.B \-qslots
parameter (see the "wizard" switches below).
.B Caution:
You must explicitly add
.BI \-sample " 1x1"
for efficient separate color
quality selection, since the default value used by library is 2x2!
.PP
The
.B \-progressive
@@ -157,35 +169,72 @@ Switches for advanced users:
.B \-arithmetic
Use arithmetic coding.
.B Caution:
arithmetic coded JPEG is not yet widely implemented, so many decoders will be
unable to view an arithmetic coded JPEG file at all.
arithmetic coded JPEG is not yet widely implemented, so many decoders will
be unable to view an arithmetic coded JPEG file at all.
.TP
.BI \-block " N"
Set DCT block size. All N from 1 to 16 are possible.
Default is 8 (baseline format).
Larger values produce higher compression,
smaller values produce higher quality
(exact DCT stage possible with 1 or 2; with the default quality of 75 and
default Luminance qtable the DCT+Quantization stage is lossless for N=1).
.B Caution:
An implementation of the JPEG SmartScale extension is required for this
feature. SmartScale enabled JPEG is not yet widely implemented, so many
decoders will be unable to view a SmartScale extended JPEG file at all.
.TP
.B \-rgb1
Create RGB JPEG file with reversible color transform.
Works like the
.B \-rgb
switch (see above) and inserts a simple reversible color transform
into the processing which significantly improves the compression.
Use this switch in combination with the
.BI \-block " N"
switch (see above) for lossless JPEG coding.
.B Caution:
A decoder with inverse color transform support is required for
this feature. Reversible color transform support is not yet
widely implemented, so many decoders will be unable to view
a reversible color transformed JPEG file at all.
.TP
.B \-bgycc
Create big gamut YCC JPEG file.
In this type of encoding the color difference components are quantized
further by a factor of 2 compared to the normal Cb/Cr values, thus creating
space to allow larger color values with higher saturation than the normal
gamut limits to be encoded. In order to compensate for the loss of color
fidelity compared to a normal YCC encoded file, the color quantization
tables can be adjusted accordingly. For example,
.B cjpeg \-bgycc \-quality
80,90 will give similar results as
.B cjpeg \-quality
80.
.B Caution:
For correct decompression a decoder with big gamut YCC support (JFIF
version 2) is required. An old decoder may or may not display a big
gamut YCC encoded JPEG file, depending on JFIF version check and
corresponding warning/error configuration. In case of a granted
decompression the old decoder will display the image with half
saturated colors.
.TP
.B \-dct int
Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
In libjpeg-turbo, the fast method is generally about 5-15% faster than the int
method when using the x86/x86-64 SIMD extensions (results may vary with other
SIMD implementations, or when using libjpeg-turbo without SIMD extensions.)
For quality levels of 90 and below, there should be little or no perceptible
difference between the two algorithms. For quality levels above 90, however,
the difference between the fast and the int methods becomes more pronounced.
With quality=97, for instance, the fast method incurs generally about a 1-3 dB
loss (in PSNR) relative to the int method, but this can be larger for some
images. Do not use the fast method with quality levels above 97. The
algorithm often degenerates at quality=98 and above and can actually produce a
more lossy image than if lower quality levels had been used. Also, in
libjpeg-turbo, the fast method is not fully accelerated for quality levels
above 97, so it will be slower than the int method.
.TP
.B \-dct float
Use floating-point DCT method.
The float method is mainly a legacy feature. It does not produce significantly
more accurate results than the int method, and it is much slower. The float
method may also give different results on different machines due to varying
roundoff behavior, whereas the integer methods should give the same results on
all machines.
The float method is very slightly more accurate than the int method, but is
much slower unless your machine has very fast floating-point hardware. Also
note that results of the floating-point method may vary slightly across
machines, while the integer methods should give the same results everywhere.
The fast integer method is much less accurate than the other two.
.TP
.B \-nosmooth
Don't use high-quality downsampling.
.TP
.BI \-restart " N"
Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is
@@ -207,11 +256,6 @@ selects 4000000 bytes. If more space is needed, temporary files will be used.
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.BI \-memdst
Compress to memory instead of a file. This feature was implemented mainly as a
way of testing the in-memory destination manager (jpeg_mem_dest()), but it is
also useful for benchmarking, since it reduces the I/O overhead.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
@@ -220,9 +264,6 @@ give more output. Also, version information is printed at startup.
.B \-debug
Same as
.BR \-verbose .
.TP
.B \-version
Print version information and exit.
.PP
The
.B \-restart
@@ -333,15 +374,10 @@ Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.PP
This file was modified by The libjpeg-turbo Project to include only information
relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
features not present in libjpeg.
.SH ISSUES
Support for GIF input files was removed in cjpeg v6b due to concerns over
the Unisys LZW patent. Although this patent expired in 2006, cjpeg still
lacks GIF support, for these historical reasons. (Conversion of GIF files to
JPEG is usually a bad idea anyway, since GIF is a 256-color format.)
.SH BUGS
GIF input files are no longer supported, to avoid the Unisys LZW patent
(now expired).
(Conversion of GIF files to JPEG is usually a bad idea anyway.)
.PP
Not all variants of BMP and Targa file formats are supported.
.PP

536
cjpeg.c
View File

@@ -1,13 +1,9 @@
/*
* cjpeg.c
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1991-1998, Thomas G. Lane.
* Modified 2003-2011 by Guido Vollbeding.
* libjpeg-turbo Modifications:
* Copyright (C) 2010, 2013-2014, D. R. Commander.
* mozjpeg Modifications:
* Copyright (C) 2014, Mozilla Corporation.
* Modified 2003-2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains a command-line user interface for the JPEG compressor.
@@ -15,8 +11,8 @@
*
* Two different command line styles are permitted, depending on the
* compile-time switch TWO_FILE_COMMANDLINE:
* cjpeg [options] inputfile outputfile
* cjpeg [options] [inputfile]
* cjpeg [options] inputfile outputfile
* cjpeg [options] [inputfile]
* In the second style, output is always to standard output, which you'd
* normally redirect to a file or pipe to some other program. Input is
* either from a named file or from standard input (typically redirected).
@@ -24,28 +20,27 @@
* don't support pipes. Also, you MUST use the first style if your system
* doesn't do binary I/O to stdin/stdout.
* To simplify script writing, the "-outfile" switch is provided. The syntax
* cjpeg [options] -outfile outputfile inputfile
* cjpeg [options] -outfile outputfile inputfile
* works regardless of which command line style is used.
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include "jconfigint.h"
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks needs this */
#include <console.h> /* ... and this */
#include <console.h> /* ... and this */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#include <console.h> /* Think declares it here */
#endif
#endif
/* Create the add-on message string table. */
#define JMESSAGE(code,string) string ,
#define JMESSAGE(code,string) string ,
static const char * const cdjpeg_message_table[] = {
#include "cderror.h"
@@ -79,11 +74,11 @@ static const char * const cdjpeg_message_table[] = {
* seldom-used ID field), so we provide a switch to force Targa input mode.
*/
static boolean is_targa; /* records user -targa switch */
static boolean is_jpeg;
static boolean is_targa; /* records user -targa switch */
LOCAL(cjpeg_source_ptr)
select_file_type (j_compress_ptr cinfo, FILE *infile)
select_file_type (j_compress_ptr cinfo, FILE * infile)
{
int c;
@@ -113,10 +108,6 @@ 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);
@@ -125,15 +116,12 @@ 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;
}
return NULL; /* suppress compiler warnings */
return NULL; /* suppress compiler warnings */
}
@@ -146,9 +134,8 @@ select_file_type (j_compress_ptr cinfo, FILE *infile)
*/
static const char *progname; /* program name for error messages */
static char *outfilename; /* for -outfile switch */
boolean memdst; /* for -memdst switch */
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
@@ -163,71 +150,54 @@ usage (void)
#endif
fprintf(stderr, "Switches (names may be abbreviated):\n");
fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is most useful range,\n");
fprintf(stderr, " default is 75)\n");
fprintf(stderr, " -quality N[,...] Compression quality (0..100; 5-95 is useful range)\n");
fprintf(stderr, " -grayscale Create monochrome JPEG file\n");
fprintf(stderr, " -rgb Create RGB JPEG file\n");
#ifdef ENTROPY_OPT_SUPPORTED
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression, enabled by default)\n");
fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n");
#endif
#ifdef C_PROGRESSIVE_SUPPORTED
fprintf(stderr, " -progressive Create progressive JPEG file (enabled by default)\n");
fprintf(stderr, " -progressive Create progressive JPEG file\n");
#endif
#ifdef DCT_SCALING_SUPPORTED
fprintf(stderr, " -scale M/N Scale image by fraction M/N, eg, 1/2\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
#ifdef DCT_SCALING_SUPPORTED
fprintf(stderr, " -block N DCT block size (1..16; default is 8)\n");
#endif
#if JPEG_LIB_VERSION_MAJOR >= 9
fprintf(stderr, " -rgb1 Create RGB JPEG file with reversible color transform\n");
fprintf(stderr, " -bgycc Create big gamut YCC JPEG file\n");
#endif
#ifdef DCT_ISLOW_SUPPORTED
fprintf(stderr, " -dct int Use integer DCT method%s\n",
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
#endif
#ifdef DCT_FLOAT_SUPPORTED
fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
#endif
fprintf(stderr, " -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, " -nosmooth Don't use high-quality downsampling\n");
fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n");
#ifdef INPUT_SMOOTHING_SUPPORTED
fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n");
#endif
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
fprintf(stderr, " -memdst Compress to memory instead of file (useful for benchmarking)\n");
#endif
fprintf(stderr, " -verbose or -debug Emit debug output\n");
fprintf(stderr, " -version Print version information and exit\n");
fprintf(stderr, "Switches for wizards:\n");
fprintf(stderr, " -baseline Force baseline quantization tables\n");
fprintf(stderr, " -qtables file Use quantization tables given in file\n");
fprintf(stderr, " -qslots N[,...] Set component quantization tables\n");
fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n");
@@ -240,7 +210,7 @@ usage (void)
LOCAL(int)
parse_switches (j_compress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
int last_file_arg_seen, boolean for_real)
/* Parse optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
@@ -251,26 +221,21 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
*/
{
int argn;
char *arg;
char * arg;
boolean force_baseline;
boolean simple_progressive;
char *qualityarg = NULL; /* saves -quality parm if any */
char *qtablefile = NULL; /* saves -qtables filename if any */
char *qslotsarg = NULL; /* saves -qslots parm if any */
char *samplearg = NULL; /* saves -sample parm if any */
char *scansarg = NULL; /* saves -scans parm if any */
char * qualityarg = NULL; /* saves -quality parm if any */
char * qtablefile = NULL; /* saves -qtables filename if any */
char * qslotsarg = NULL; /* saves -qslots parm if any */
char * samplearg = NULL; /* saves -sample parm if any */
char * scansarg = NULL; /* saves -scans parm if any */
/* Set up default JPEG parameters. */
force_baseline = FALSE; /* by default, allow 16-bit quantizers */
#ifdef C_PROGRESSIVE_SUPPORTED
simple_progressive = cinfo->num_scans == 0 ? FALSE : TRUE;
#else
force_baseline = FALSE; /* by default, allow 16-bit quantizers */
simple_progressive = FALSE;
#endif
is_targa = FALSE;
outfilename = NULL;
memdst = FALSE;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
@@ -280,50 +245,58 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
if (*arg != '-') {
/* Not a switch, must be a file name argument */
if (argn <= last_file_arg_seen) {
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
}
break; /* else done parsing switches */
break; /* else done parsing switches */
}
arg++; /* advance past switch marker character */
arg++; /* advance past switch marker character */
if (keymatch(arg, "arithmetic", 1)) {
/* Use arithmetic coding. */
#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);
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "baseline", 1)) {
} else if (keymatch(arg, "baseline", 2)) {
/* Force baseline-compatible output (8-bit quantizer values). */
force_baseline = TRUE;
/* Disable multiple scans */
simple_progressive = FALSE;
cinfo->num_scans = 0;
cinfo->scan_info = NULL;
} else if (keymatch(arg, "block", 2)) {
/* Set DCT block size. */
#if defined DCT_SCALING_SUPPORTED && JPEG_LIB_VERSION_MAJOR >= 8 && \
(JPEG_LIB_VERSION_MAJOR > 8 || JPEG_LIB_VERSION_MINOR >= 3)
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
if (val < 1 || val > 16)
usage();
cinfo->block_size = val;
#else
fprintf(stderr, "%s: sorry, block size setting not supported\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "dct", 2)) {
/* Select DCT algorithm. */
if (++argn >= argc) { /* advance to next argument */
fprintf(stderr, "%s: missing argument for dct\n", progname);
usage();
}
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "int", 1)) {
cinfo->dct_method = JDCT_ISLOW;
cinfo->dct_method = JDCT_ISLOW;
} else if (keymatch(argv[argn], "fast", 2)) {
cinfo->dct_method = JDCT_IFAST;
cinfo->dct_method = JDCT_IFAST;
} else if (keymatch(argv[argn], "float", 2)) {
cinfo->dct_method = JDCT_FLOAT;
} else {
fprintf(stderr, "%s: invalid argument for dct\n", progname);
usage();
}
cinfo->dct_method = JDCT_FLOAT;
} else
usage();
} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
/* Enable debug printouts. */
@@ -331,80 +304,69 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
static boolean printed_version = FALSE;
if (! printed_version) {
fprintf(stderr, "%s version %s (build %s)\n",
PACKAGE_NAME, VERSION, BUILD);
fprintf(stderr, "%s\n\n", JCOPYRIGHT);
fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
JVERSION);
printed_version = TRUE;
fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} else if (keymatch(arg, "version", 4)) {
fprintf(stderr, "%s version %s (build %s)\n",
PACKAGE_NAME, VERSION, BUILD);
exit(EXIT_SUCCESS);
} else if (keymatch(arg, "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);
} else if (keymatch(arg, "rgb", 3)) {
} else if (keymatch(arg, "rgb", 3) || keymatch(arg, "rgb1", 4)) {
/* Force an RGB JPEG file to be generated. */
#if JPEG_LIB_VERSION_MAJOR >= 9
/* Note: Entropy table assignment in jpeg_set_colorspace depends
* on color_transform.
*/
cinfo->color_transform = arg[3] ? JCT_SUBTRACT_GREEN : JCT_NONE;
#endif
jpeg_set_colorspace(cinfo, JCS_RGB);
} else if (keymatch(arg, "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, "bgycc", 5)) {
/* Force a big gamut YCC JPEG file to be generated. */
#if JPEG_LIB_VERSION_MAJOR >= 9 && \
(JPEG_LIB_VERSION_MAJOR > 9 || JPEG_LIB_VERSION_MINOR >= 1)
jpeg_set_colorspace(cinfo, JCS_BG_YCC);
#else
fprintf(stderr, "%s: sorry, BG_YCC colorspace not supported\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "maxmemory", 3)) {
/* Maximum memory in Kb (or Mb with 'm'). */
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "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, "nosmooth", 3)) {
/* Suppress fancy downsampling. */
cinfo->do_fancy_downsampling = FALSE;
} else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) {
/* Enable entropy parm optimization. */
#ifdef ENTROPY_OPT_SUPPORTED
cinfo->optimize_coding = TRUE;
#else
fprintf(stderr, "%s: sorry, entropy optimization was not compiled in\n",
progname);
fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "outfile", 4)) {
/* Set output file name. */
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 */
if (++argn >= argc) /* advance to next argument */
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "progressive", 1)) {
/* Select simple progressive mode. */
@@ -412,33 +374,21 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
simple_progressive = TRUE;
/* We must postpone execution until num_components is known. */
#else
fprintf(stderr, "%s: sorry, progressive output was not compiled in\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "memdst", 2)) {
/* Use in-memory destination manager */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
memdst = TRUE;
#else
fprintf(stderr, "%s: sorry, in-memory destination manager was not compiled in\n",
progname);
fprintf(stderr, "%s: sorry, progressive output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
} else if (keymatch(arg, "quality", 1)) {
/* Quality ratings (quantization table scaling factors). */
if (++argn >= argc) { /* advance to next argument */
fprintf(stderr, "%s: missing argument for quality\n", progname);
usage();
}
if (++argn >= argc) /* advance to next argument */
usage();
qualityarg = argv[argn];
} else if (keymatch(arg, "qslots", 2)) {
/* Quantization table slot numbers. */
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
qslotsarg = argv[argn];
/* Must delay setting qslots until after we have processed any
* colorspace-determining switches, since jpeg_set_colorspace sets
@@ -447,71 +397,58 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
} else if (keymatch(arg, "qtables", 2)) {
/* Quantization tables fetched from file. */
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
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;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
usage();
if (lval < 0 || lval > 65535L)
usage();
usage();
if (ch == 'b' || ch == 'B') {
cinfo->restart_interval = (unsigned int) lval;
cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
cinfo->restart_interval = (unsigned int) lval;
cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */
} else {
cinfo->restart_in_rows = (int) lval;
/* restart_interval will be computed during startup */
cinfo->restart_in_rows = (int) lval;
/* 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 */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
samplearg = argv[argn];
/* Must delay setting sample factors until after we have processed any
* colorspace-determining switches, since jpeg_set_colorspace sets
* default sampling factors.
*/
} else if (keymatch(arg, "scale", 4)) {
/* Scale the image by a fraction M/N. */
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%u/%u",
&cinfo->scale_num, &cinfo->scale_denom) != 2)
usage();
} else if (keymatch(arg, "scans", 4)) {
/* Set scan script. */
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
scansarg = argv[argn];
/* We must postpone reading the file in case -progressive appears. */
#else
fprintf(stderr, "%s: sorry, multi-scan output was not compiled in\n",
progname);
fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n",
progname);
exit(EXIT_FAILURE);
#endif
@@ -519,70 +456,20 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
/* Set input smoothing factor. */
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
usage();
if (val < 0 || val > 100)
usage();
usage();
cinfo->smoothing_factor = val;
} else if (keymatch(arg, "targa", 1)) {
/* 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 */
usage(); /* bogus switch */
}
}
@@ -592,43 +479,35 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
/* Set quantization tables for selected quality. */
/* Some or all may be overridden if -qtables is present. */
if (qualityarg != NULL) /* process -quality if it was present */
if (! set_quality_ratings(cinfo, qualityarg, force_baseline)) {
fprintf(stderr, "%s: can't set quality ratings\n", progname);
usage();
}
if (qualityarg != NULL) /* process -quality if it was present */
if (! set_quality_ratings(cinfo, qualityarg, force_baseline))
usage();
if (qtablefile != NULL) /* process -qtables if it was present */
if (! read_quant_tables(cinfo, qtablefile, force_baseline)) {
fprintf(stderr, "%s: can't read qtable file\n", progname);
usage();
}
if (qtablefile != NULL) /* process -qtables if it was present */
if (! read_quant_tables(cinfo, qtablefile, force_baseline))
usage();
if (qslotsarg != NULL) /* process -qslots if it was present */
if (qslotsarg != NULL) /* process -qslots if it was present */
if (! set_quant_slots(cinfo, qslotsarg))
usage();
usage();
/* set_quality_ratings sets default subsampling, so the explicit
subsampling must be set after it */
if (samplearg != NULL) /* process -sample if it was present */
if (! set_sample_factors(cinfo, samplearg)) {
fprintf(stderr, "%s: can't set sample factors\n", progname);
usage();
}
if (samplearg != NULL) /* process -sample if it was present */
if (! set_sample_factors(cinfo, samplearg))
usage();
#ifdef C_PROGRESSIVE_SUPPORTED
if (simple_progressive) /* process -progressive; -scans can override */
if (simple_progressive) /* process -progressive; -scans can override */
jpeg_simple_progression(cinfo);
#endif
#ifdef C_MULTISCAN_FILES_SUPPORTED
if (scansarg != NULL) /* process -scans if it was present */
if (scansarg != NULL) /* process -scans if it was present */
if (! read_scan_script(cinfo, scansarg))
usage();
usage();
#endif
}
return argn; /* return index of next arg (file name) */
return argn; /* return index of next arg (file name) */
}
@@ -646,10 +525,8 @@ main (int argc, char **argv)
#endif
int file_index;
cjpeg_source_ptr src_mgr;
FILE *input_file;
FILE *output_file = NULL;
unsigned char *outbuffer = NULL;
unsigned long outsize = 0;
FILE * input_file;
FILE * output_file;
JDIMENSION num_scanlines;
/* On Mac, fetch a command line. */
@@ -659,7 +536,7 @@ main (int argc, char **argv)
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "cjpeg"; /* in case C library doesn't provide it */
progname = "cjpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG compression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
@@ -669,6 +546,11 @@ main (int argc, char **argv)
jerr.first_addon_message = JMSG_FIRSTADDONCODE;
jerr.last_addon_message = JMSG_LASTADDONCODE;
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Initialize JPEG parameters.
* Much of this may be overridden later.
* In particular, we don't yet know the input file's color space,
@@ -687,21 +569,19 @@ main (int argc, char **argv)
file_index = parse_switches(&cinfo, argc, argv, 0, FALSE);
#ifdef TWO_FILE_COMMANDLINE
if (!memdst) {
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
}
#else
@@ -729,7 +609,7 @@ main (int argc, char **argv)
fprintf(stderr, "%s: can't open %s\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else if (!memdst) {
} else {
/* default output file is stdout */
output_file = write_stdout();
}
@@ -746,66 +626,20 @@ 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 */
file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
/* Specify data destination for compression */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
if (memdst)
jpeg_mem_dest(&cinfo, &outbuffer, &outsize);
else
#endif
jpeg_stdio_dest(&cinfo, output_file);
jpeg_stdio_dest(&cinfo, output_file);
/* 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);
}
@@ -817,20 +651,14 @@ main (int argc, char **argv)
/* Close files, if we opened them */
if (input_file != stdin)
fclose(input_file);
if (output_file != stdout && output_file != NULL)
if (output_file != stdout)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &cinfo);
#endif
if (memdst) {
fprintf(stderr, "Compressed size: %lu bytes\n", outsize);
if (outbuffer != NULL)
free(outbuffer);
}
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
return 0; /* suppress no-return-value warnings */
}

402
ckconfig.c Normal file
View File

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

34
cmakescripts/testclean.cmake
View File

@@ -1,34 +0,0 @@
file(GLOB FILES
testout*
*_GRAY_*.bmp
*_GRAY_*.png
*_GRAY_*.ppm
*_GRAY_*.jpg
*_GRAY.yuv
*_420_*.bmp
*_420_*.png
*_420_*.ppm
*_420_*.jpg
*_420.yuv
*_422_*.bmp
*_422_*.png
*_422_*.ppm
*_422_*.jpg
*_422.yuv
*_444_*.bmp
*_444_*.png
*_444_*.ppm
*_444_*.jpg
*_444.yuv
*_440_*.bmp
*_440_*.png
*_440_*.ppm
*_440_*.jpg
*_440.yuv)
if(NOT FILES STREQUAL "")
message(STATUS "Removing test files")
file(REMOVE ${FILES})
else()
message(STATUS "No files to remove")
endif()

72
coderules.txt
View File

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

348
compile Executable file
View File

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

1473
config.guess vendored Executable file
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1836
config.sub vendored Executable file
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File diff suppressed because it is too large Load Diff

15878
configure vendored Executable file
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File diff suppressed because it is too large Load Diff

918
configure.ac
View File

@@ -1,619 +1,365 @@
# -*- Autoconf -*-
# IJG auto-configuration source file.
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.56])
AC_INIT([mozjpeg], [3.2])
BUILD=`date +%Y%m%d`
#
# Configure script for IJG libjpeg
#
AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
AC_PREFIX_DEFAULT(/opt/mozjpeg)
AC_INIT([libjpeg], [9.3.0])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
# Directory where autotools helper scripts lives.
AC_CONFIG_AUX_DIR([.])
# Checks for programs.
SAVED_CFLAGS=${CFLAGS}
SAVED_CPPFLAGS=${CPPFLAGS}
AC_PROG_CPP
# Generate configuration headers.
AC_CONFIG_HEADERS([jconfig.h:jconfig.cfg])
# Hack: disable autoheader so that it doesn't overwrite our cfg template.
AUTOHEADER="echo autoheader ignored"
# Check system type
AC_CANONICAL_TARGET
# Initialize Automake
# Don't require all the GNU mandated files
AM_INIT_AUTOMAKE([-Wall -Werror no-dist foreign])
# Make --enable-silent-rules the default.
# To get verbose build output you may configure
# with --disable-silent-rules or use "make V=1".
AM_SILENT_RULES([yes])
# Add configure option --enable-maintainer-mode which enables
# dependency checking and generation useful to package maintainers.
# This is made an option to avoid confusing end users.
AM_MAINTAINER_MODE
# Check for programs
AC_PROG_CC
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
AM_PROG_AS
AM_PROG_CC_C_O
AC_PROG_CC_STDC
AC_PROG_CPP
AC_PROG_INSTALL
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
AC_PROG_LIBTOOL
AC_PROG_MAKE_SET
AC_PROG_LN_S
AM_PROG_AR
AC_ARG_WITH([build-date], [Use custom build string to enable reproducible builds (default: YYMMDD)],
[BUILD="$with_build_date"],
[BUILD=`date +%Y%m%d`])
PKG_PROG_PKG_CONFIG
# When the prefix is /opt/libjpeg-turbo, we assume that an "official" binary is
# being created, and thus we install things into specific locations.
old_prefix=${prefix}
if test "x$prefix" = "xNONE" -a "x$ac_default_prefix" != "x"; then
prefix=$ac_default_prefix
fi
DATADIR=`eval echo ${datadir}`
DATADIR=`eval echo $DATADIR`
if test "$DATADIR" = "/opt/libjpeg-turbo/share"; then
datadir='${prefix}'
fi
DATADIR=`eval echo ${datarootdir}`
DATADIR=`eval echo $DATADIR`
if test "$DATADIR" = "/opt/libjpeg-turbo/share"; then
datarootdir='${prefix}'
fi
DOCDIR=`eval echo ${docdir}`
DOCDIR=`eval echo $DOCDIR`
if test "$DOCDIR" = "/opt/libjpeg-turbo/doc/libjpeg-turbo"; then
docdir='${datadir}/doc'
fi
old_exec_prefix=${exec_prefix}
if test "x$exec_prefix" = "xNONE"; then
exec_prefix=${prefix}
fi
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
case $host_os in
darwin*)
;;
*)
if test "${ac_cv_sizeof_size_t}" = "8"; then
libdir='${exec_prefix}/lib64'
elif test "${ac_cv_sizeof_size_t}" = "4"; then
libdir='${exec_prefix}/lib32'
fi
;;
esac
fi
fi
exec_prefix=${old_exec_prefix}
prefix=${old_prefix}
# Check whether compiler supports pointers to undefined structures
AC_MSG_CHECKING(whether compiler supports pointers to undefined structures)
AC_TRY_COMPILE([ typedef struct undefined_structure *undef_struct_ptr; ], ,
AC_MSG_RESULT(yes),
[AC_MSG_RESULT(no)
AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1],
[Compiler does not support pointers to undefined structures.])])
if test "x${GCC}" = "xyes"; then
if test "x${SAVED_CFLAGS}" = "x"; then
CFLAGS=-O3
fi
if test "x${SAVED_CPPFLAGS}" = "x"; then
CPPFLAGS=-Wall
fi
fi
AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
if test "x${SUNCC}" = "xyes"; then
if test "x${SAVED_CFLAGS}" = "x"; then
CFLAGS=-xO5
fi
fi
# Checks for libraries.
AC_CHECK_LIB([m],[pow])
PKG_CHECK_MODULES([libpng], [libpng], [HAVE_LIBPNG=1], [
PKG_CHECK_MODULES([libpng], [libpng12], [HAVE_LIBPNG=1], [HAVE_LIBPNG=0])
])
AM_CONDITIONAL([HAVE_LIBPNG], [test "$HAVE_LIBPNG" -eq 1])
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([stddef.h stdlib.h locale.h string.h])
AC_CHECK_HEADER([sys/types.h],
AC_DEFINE([NEED_SYS_TYPES_H], 1, [Define if you need to include <sys/types.h> to get size_t.]))
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_CHAR_UNSIGNED
AC_C_INLINE
AC_TYPE_SIZE_T
AC_CHECK_TYPES([unsigned char, unsigned short])
AC_MSG_CHECKING([if right shift is signed])
AC_TRY_RUN(
[#include <stdio.h>
int is_shifting_signed (long arg) {
long res = arg >> 4;
if (res == -0x7F7E80CL)
return 1; /* right shift is signed */
/* see if unsigned-shift hack will fix it. */
/* we can't just test exact value since it depends on width of long... */
res |= (~0L) << (32-4);
if (res == -0x7F7E80CL)
return 0; /* right shift is unsigned */
printf("Right shift isn't acting as I expect it to.\n");
printf("I fear the JPEG software will not work at all.\n\n");
return 0; /* try it with unsigned anyway */
}
int main (void) {
exit(is_shifting_signed(-0x7F7E80B1L));
}],
[AC_MSG_RESULT(no)
AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], 1,
[Define if your (broken) compiler shifts signed values as if they were unsigned.])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
# Checks for library functions.
AC_CHECK_FUNCS([memset memcpy], [],
[AC_DEFINE([NEED_BSD_STRINGS], 1,
[Define if you have BSD-like bzero and bcopy in <strings.h> rather than memset/memcpy in <string.h>.])])
AC_MSG_CHECKING([libjpeg API version])
AC_ARG_VAR(JPEG_LIB_VERSION, [libjpeg API version (62, 70, or 80)])
if test "x$JPEG_LIB_VERSION" = "x"; then
AC_ARG_WITH([jpeg7],
AC_HELP_STRING([--with-jpeg7],
[Emulate libjpeg v7 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b.)]))
AC_ARG_WITH([jpeg8],
AC_HELP_STRING([--with-jpeg8],
[Emulate libjpeg v8 API/ABI (this makes mozjpeg backward incompatible with libjpeg v6b.)]))
if test "x${with_jpeg8}" = "xyes"; then
JPEG_LIB_VERSION=80
else
if test "x${with_jpeg7}" = "xyes"; then
JPEG_LIB_VERSION=70
else
JPEG_LIB_VERSION=62
fi
fi
fi
JPEG_LIB_VERSION_DECIMAL=`expr $JPEG_LIB_VERSION / 10`.`expr $JPEG_LIB_VERSION % 10`
AC_SUBST(JPEG_LIB_VERSION_DECIMAL)
AC_MSG_RESULT([$JPEG_LIB_VERSION_DECIMAL])
AC_DEFINE_UNQUOTED(JPEG_LIB_VERSION, [$JPEG_LIB_VERSION],
[libjpeg API version])
AC_ARG_VAR(SO_MAJOR_VERSION,
[Major version of the mozjpeg shared library (default is determined by the API version)])
AC_ARG_VAR(SO_MINOR_VERSION,
[Minor version of the mozjpeg shared library (default is determined by the API version)])
if test "x$SO_MAJOR_VERSION" = "x"; then
case "$JPEG_LIB_VERSION" in
62) SO_MAJOR_VERSION=$JPEG_LIB_VERSION ;;
*) SO_MAJOR_VERSION=`expr $JPEG_LIB_VERSION / 10` ;;
esac
fi
if test "x$SO_MINOR_VERSION" = "x"; then
case "$JPEG_LIB_VERSION" in
80) SO_MINOR_VERSION=2 ;;
*) SO_MINOR_VERSION=0 ;;
esac
fi
RPM_CONFIG_ARGS=
# Memory source/destination managers
SO_AGE=1
MEM_SRCDST_FUNCTIONS=
if test "x${with_jpeg8}" != "xyes"; then
AC_MSG_CHECKING([whether to include in-memory source/destination managers])
AC_ARG_WITH([mem-srcdst],
AC_HELP_STRING([--without-mem-srcdst],
[Do not include in-memory source/destination manager functions when emulating the libjpeg v6b or v7 API/ABI]))
if test "x$with_mem_srcdst" != "xno"; then
AC_MSG_RESULT(yes)
AC_DEFINE([MEM_SRCDST_SUPPORTED], [1],
[Support in-memory source/destination managers])
SO_AGE=2
MEM_SRCDST_FUNCTIONS="global: jpeg_mem_dest; jpeg_mem_src;";
else
AC_MSG_RESULT(no)
RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-mem-srcdst"
fi
fi
AC_MSG_CHECKING([libjpeg shared library version])
AC_MSG_RESULT([$SO_MAJOR_VERSION.$SO_AGE.$SO_MINOR_VERSION])
LIBTOOL_CURRENT=`expr $SO_MAJOR_VERSION + $SO_AGE`
AC_SUBST(LIBTOOL_CURRENT)
AC_SUBST(SO_MAJOR_VERSION)
AC_SUBST(SO_MINOR_VERSION)
AC_SUBST(SO_AGE)
AC_SUBST(MEM_SRCDST_FUNCTIONS)
AC_DEFINE_UNQUOTED(MOZJPEG_VERSION, [$VERSION], [mozjpeg version])
m4_define(version_triplet,m4_split(AC_PACKAGE_VERSION,[[.]]))
m4_define(version_major,m4_argn(1,version_triplet))
m4_define(version_minor,m4_argn(2,version_triplet))
m4_define(version_revision,m4_argn(3,version_triplet))
VERSION_MAJOR=version_major
VERSION_MINOR=version_minor
VERSION_REVISION=version_revision
LIBJPEG_TURBO_VERSION_NUMBER=`printf "%d%03d%03d" $VERSION_MAJOR $VERSION_MINOR $VERSION_REVISION`
AC_DEFINE_UNQUOTED(LIBJPEG_TURBO_VERSION_NUMBER, [$LIBJPEG_TURBO_VERSION_NUMBER], [libjpeg-turbo version in integer form])
VERSION_SCRIPT=yes
# Check if LD supports linker scripts,
# and define automake conditional HAVE_LD_VERSION_SCRIPT if so.
AC_ARG_ENABLE([ld-version-script],
AS_HELP_STRING([--disable-ld-version-script],
[Disable linker version script for mozjpeg (default is to use linker version script if the linker supports it)]),
[VERSION_SCRIPT=$enableval], [])
AC_MSG_CHECKING([whether the linker supports version scripts])
SAVED_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--version-script,conftest.map"
cat > conftest.map <<EOF
AS_HELP_STRING([--enable-ld-version-script],
[enable linker version script (default is enabled when possible)]),
[have_ld_version_script=$enableval], [])
if test -z "$have_ld_version_script"; then
AC_MSG_CHECKING([if LD -Wl,--version-script works])
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
cat > conftest.map <<EOF
VERS_1 {
global: *;
global: sym;
};
VERS_2 {
global: sym;
} VERS_1;
EOF
AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM([], [])])],
[VERSION_SCRIPT_FLAG=-Wl,--version-script,;
AC_MSG_RESULT([yes (GNU style)])],
[])
if test "x$VERSION_SCRIPT_FLAG" = "x"; then
LDFLAGS="$SAVED_LDFLAGS -Wl,-M,conftest.map"
AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM([], [])])],
[VERSION_SCRIPT_FLAG=-Wl,-M,;
AC_MSG_RESULT([yes (Sun style)])],
[])
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
[have_ld_version_script=yes], [have_ld_version_script=no])
rm -f conftest.map
LDFLAGS="$save_LDFLAGS"
AC_MSG_RESULT($have_ld_version_script)
fi
if test "x$VERSION_SCRIPT_FLAG" = "x"; then
VERSION_SCRIPT=no
AC_MSG_RESULT(no)
AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
# See if compiler supports prototypes.
AC_MSG_CHECKING([for function prototypes])
AC_CACHE_VAL([ijg_cv_have_prototypes],
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
int testfunction (int arg1, int * arg2); /* check prototypes */
struct methods_struct { /* check method-pointer declarations */
int (*error_exit) (char *msgtext);
int (*trace_message) (char *msgtext);
int (*another_method) (void);
};
int testfunction (int arg1, int * arg2) /* check definitions */
{ return arg2[arg1]; }
int test2function (void) /* check void arg list */
{ return 0; }
]])],
[ijg_cv_have_prototypes=yes],
[ijg_cv_have_prototypes=no])])
AC_MSG_RESULT([$ijg_cv_have_prototypes])
if test $ijg_cv_have_prototypes = yes; then
AC_DEFINE([HAVE_PROTOTYPES],[1],[Compiler supports function prototypes.])
else
AC_MSG_WARN([Your compiler does not seem to know about function prototypes.
Perhaps it needs a special switch to enable ANSI C mode.
If so, we recommend running configure like this:
./configure CC='cc -switch'
where -switch is the proper switch.])
fi
LDFLAGS="$SAVED_LDFLAGS"
AC_MSG_CHECKING([whether to use version script when building mozjpeg])
AC_MSG_RESULT($VERSION_SCRIPT)
# Check header files
AC_CHECK_HEADERS([stddef.h stdlib.h locale.h])
AC_CHECK_HEADER([string.h], [],
[AC_DEFINE([NEED_BSD_STRINGS], [1],
[Compiler has <strings.h> rather than standard <string.h>.])])
AM_CONDITIONAL(VERSION_SCRIPT, test "x$VERSION_SCRIPT" = "xyes")
AC_SUBST(VERSION_SCRIPT_FLAG)
# See whether type size_t is defined in any ANSI-standard places;
# if not, perhaps it is defined in <sys/types.h>.
AC_MSG_CHECKING([for size_t])
AC_TRY_COMPILE([
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#ifdef NEED_BSD_STRINGS
#include <strings.h>
#else
#include <string.h>
#endif
typedef size_t my_size_t;
],
[ my_size_t foovar; ],
[ijg_size_t_ok=yes],
[ijg_size_t_ok="not ANSI, perhaps it is in sys/types.h"])
AC_MSG_RESULT([$ijg_size_t_ok])
if test "$ijg_size_t_ok" != yes; then
AC_CHECK_HEADER([sys/types.h],
[AC_DEFINE([NEED_SYS_TYPES_H], [1],
[Need to include <sys/types.h> in order to obtain size_t.])
AC_EGREP_CPP([size_t], [#include <sys/types.h>],
[ijg_size_t_ok="size_t is in sys/types.h"],
[ijg_size_t_ok=no])],
[ijg_size_t_ok=no])
AC_MSG_RESULT([$ijg_size_t_ok])
if test "$ijg_size_t_ok" = no; then
AC_MSG_WARN([Type size_t is not defined in any of the usual places.
Try putting '"typedef unsigned int size_t;"' in jconfig.h.])
fi
fi
# Check compiler characteristics
AC_MSG_CHECKING([for type unsigned char])
AC_TRY_COMPILE([], [ unsigned char un_char; ],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_UNSIGNED_CHAR], [1],
[Compiler supports 'unsigned char'.])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for type unsigned short])
AC_TRY_COMPILE([], [ unsigned short un_short; ],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_UNSIGNED_SHORT], [1],
[Compiler supports 'unsigned short'.])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING([for type void])
AC_TRY_COMPILE([
/* Caution: a C++ compiler will insist on valid prototypes */
typedef void * void_ptr; /* check void * */
#ifdef HAVE_PROTOTYPES /* check ptr to function returning void */
typedef void (*void_func) (int a, int b);
#else
typedef void (*void_func) ();
#endif
#ifdef HAVE_PROTOTYPES /* check void function result */
void test3function (void_ptr arg1, void_func arg2)
#else
void test3function (arg1, arg2)
void_ptr arg1;
void_func arg2;
#endif
{
char * locptr = (char *) arg1; /* check casting to and from void * */
arg1 = (void *) locptr;
(*arg2) (1, 2); /* check call of fcn returning void */
}
], [ ],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([void], [char],
[Define 'void' as 'char' for archaic compilers
that don't understand it.])])
AC_C_CONST
# Check for non-broken inline under various spellings
AC_MSG_CHECKING(for inline)
ljt_cv_inline=""
AC_TRY_COMPILE(, [} inline __attribute__((always_inline)) int foo() { return 0; }
int bar() { return foo();], ljt_cv_inline="inline __attribute__((always_inline))",
AC_TRY_COMPILE(, [} __inline__ int foo() { return 0; }
int bar() { return foo();], ljt_cv_inline="__inline__",
AC_TRY_COMPILE(, [} __inline int foo() { return 0; }
int bar() { return foo();], ljt_cv_inline="__inline",
AC_TRY_COMPILE(, [} inline int foo() { return 0; }
int bar() { return foo();], ljt_cv_inline="inline"))))
AC_MSG_RESULT($ljt_cv_inline)
AC_DEFINE_UNQUOTED([INLINE],[$ljt_cv_inline],[How to obtain function inlining.])
AC_MSG_CHECKING([for inline])
ijg_cv_inline=""
AC_TRY_COMPILE([], [} __inline__ int foo() { return 0; }
int bar() { return foo();], ijg_cv_inline="__inline__",
[AC_TRY_COMPILE(, [} __inline int foo() { return 0; }
int bar() { return foo();], ijg_cv_inline="__inline",
[AC_TRY_COMPILE(, [} inline int foo() { return 0; }
int bar() { return foo();], ijg_cv_inline="inline")])])
AC_MSG_RESULT($ijg_cv_inline)
AC_DEFINE_UNQUOTED([INLINE], [$ijg_cv_inline],
[How to obtain function inlining.])
# Arithmetic coding support
AC_MSG_CHECKING([whether to include arithmetic encoding support])
AC_ARG_WITH([arith-enc],
AC_HELP_STRING([--without-arith-enc],
[Do not include arithmetic encoding support when emulating the libjpeg v6b API/ABI]))
if test "x$with_12bit" = "xyes"; then
with_arith_enc=no
fi
if test "x${with_jpeg8}" = "xyes" -o "x${with_jpeg7}" = "xyes"; then
with_arith_enc=yes
fi
if test "x$with_arith_enc" = "xno"; then
AC_MSG_RESULT(no)
RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-enc"
else
AC_DEFINE([C_ARITH_CODING_SUPPORTED], [1], [Support arithmetic encoding])
AC_MSG_RESULT(yes)
fi
AM_CONDITIONAL([WITH_ARITH_ENC], [test "x$with_arith_enc" != "xno"])
# We cannot check for bogus warnings, but at least we can check for errors
AC_MSG_CHECKING([for broken incomplete types])
AC_TRY_COMPILE([ typedef struct undefined_structure * undef_struct_ptr; ],
[],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(broken)
AC_DEFINE([INCOMPLETE_TYPES_BROKEN], [1],
[Compiler does not support pointers to unspecified
structures.])])
AC_MSG_CHECKING([whether to include arithmetic decoding support])
AC_ARG_WITH([arith-dec],
AC_HELP_STRING([--without-arith-dec],
[Do not include arithmetic decoding support when emulating the libjpeg v6b API/ABI]))
if test "x$with_12bit" = "xyes"; then
with_arith_dec=no
fi
if test "x${with_jpeg8}" = "xyes" -o "x${with_jpeg7}" = "xyes"; then
with_arith_dec=yes
fi
if test "x$with_arith_dec" = "xno"; then
AC_MSG_RESULT(no)
RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-dec"
else
AC_DEFINE([D_ARITH_CODING_SUPPORTED], [1], [Support arithmetic decoding])
AC_MSG_RESULT(yes)
fi
AM_CONDITIONAL([WITH_ARITH_DEC], [test "x$with_arith_dec" != "xno"])
# Test whether global names are unique to at least 15 chars
AC_MSG_CHECKING([for short external names])
AC_TRY_LINK([
int possibly_duplicate_function () { return 0; }
int possibly_dupli_function () { return 1; }
], [],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(short)
AC_DEFINE([NEED_SHORT_EXTERNAL_NAMES], [1],
[Linker requires that global names be unique in
first 15 characters.])])
AM_CONDITIONAL([WITH_ARITH],
[test "x$with_arith_dec" != "xno" -o "x$with_arith_enc" != "xno"])
# Run-time checks
AC_MSG_CHECKING([to see if char is signed])
AC_TRY_RUN([
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#ifdef HAVE_PROTOTYPES
int is_char_signed (int arg)
#else
int is_char_signed (arg)
int arg;
#endif
{
if (arg == 189) { /* expected result for unsigned char */
return 0; /* type char is unsigned */
}
else if (arg != -67) { /* expected result for signed char */
printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n");
printf("I fear the JPEG software will not work at all.\n\n");
}
return 1; /* assume char is signed otherwise */
}
char signed_char_check = (char) (-67);
int main() {
exit(is_char_signed((int) signed_char_check));
}], [AC_MSG_RESULT(no)
AC_DEFINE([CHAR_IS_UNSIGNED], [1],
[Characters are unsigned])],
[AC_MSG_RESULT(yes)],
[AC_MSG_WARN([Assuming that char is signed on target machine.
If it is unsigned, this will be a little bit inefficient.])
])
# 12-bit component support
AC_MSG_CHECKING([whether to use 12-bit samples])
AC_ARG_WITH([12bit],
AC_HELP_STRING([--with-12bit], [Encode/decode JPEG images with 12-bit samples (implies --without-simd --without-turbojpeg --without-arith-dec --without-arith-enc)]))
if test "x$with_12bit" = "xyes"; then
AC_DEFINE([BITS_IN_JSAMPLE], [12], [use 8 or 12])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
AM_CONDITIONAL([WITH_12BIT], [test "x$with_12bit" = "xyes"])
AC_MSG_CHECKING([to see if right shift is signed])
AC_TRY_RUN([
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
#ifdef HAVE_PROTOTYPES
int is_shifting_signed (long arg)
#else
int is_shifting_signed (arg)
long arg;
#endif
/* See whether right-shift on a long is signed or not. */
{
long res = arg >> 4;
# TurboJPEG support
AC_MSG_CHECKING([whether to build TurboJPEG C wrapper])
AC_ARG_WITH([turbojpeg],
AC_HELP_STRING([--without-turbojpeg],
[Do not include the TurboJPEG wrapper library and associated test programs]))
if test "x$with_12bit" = "xyes"; then
with_turbojpeg=no
fi
if test "x$with_turbojpeg" = "xno"; then
AC_MSG_RESULT(no)
RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-turbojpeg"
else
AC_MSG_RESULT(yes)
fi
if (res == -0x7F7E80CL) { /* expected result for signed shift */
return 1; /* right shift is signed */
}
/* see if unsigned-shift hack will fix it. */
/* we can't just test exact value since it depends on width of long... */
res |= (~0L) << (32-4);
if (res == -0x7F7E80CL) { /* expected result now? */
return 0; /* right shift is unsigned */
}
printf("Right shift isn't acting as I expect it to.\n");
printf("I fear the JPEG software will not work at all.\n\n");
return 0; /* try it with unsigned anyway */
}
int main() {
exit(is_shifting_signed(-0x7F7E80B1L));
}],
[AC_MSG_RESULT(no)
AC_DEFINE([RIGHT_SHIFT_IS_UNSIGNED], [1],
[Broken compiler shifts signed values as an unsigned shift.])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(Assuming that right shift is signed on target machine.)])
# Java support
AC_ARG_VAR(JAVAC, [Java compiler command (default: javac)])
if test "x$JAVAC" = "x"; then
JAVAC=javac
fi
AC_SUBST(JAVAC)
AC_ARG_VAR(JAVACFLAGS, [Java compiler flags])
AC_SUBST(JAVACFLAGS)
AC_ARG_VAR(JAR, [Java archive command (default: jar)])
if test "x$JAR" = "x"; then
JAR=jar
fi
AC_SUBST(JAR)
AC_ARG_VAR(JAVA, [Java runtime command (default: java)])
if test "x$JAVA" = "x"; then
JAVA=java
fi
AC_SUBST(JAVA)
AC_ARG_VAR(JNI_CFLAGS,
[C compiler flags needed to include jni.h (default: -I/System/Library/Frameworks/JavaVM.framework/Headers on OS X, '-I/usr/java/include -I/usr/java/include/solaris' on Solaris, and '-I/usr/java/default/include -I/usr/java/default/include/linux' on Linux)])
AC_MSG_CHECKING([to see if fopen accepts b spec])
AC_TRY_RUN([
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <stdio.h>
int main() {
if (fopen("conftestdata", "wb") != NULL)
exit(0);
exit(1);
}],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([DONT_USE_B_MODE], [1],
[Don't open files in binary mode.])],
[AC_MSG_RESULT(Assuming that it does.)])
AC_MSG_CHECKING([whether to build TurboJPEG Java wrapper])
AC_ARG_WITH([java],
AC_HELP_STRING([--with-java], [Build Java wrapper for the TurboJPEG library]))
if test "x$with_12bit" = "xyes" -o "x$with_turbojpeg" = "xno"; then
with_java=no
# Configure libtool
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
# Select memory manager depending on user input.
# If no "-enable-maxmem", use jmemnobs
MEMORYMGR='jmemnobs'
MAXMEM="no"
AC_ARG_ENABLE([maxmem],
[ --enable-maxmem[=N] enable use of temp files, set max mem usage to N MB],
[MAXMEM="$enableval"])
dnl [# support --with-maxmem for backwards compatibility with IJG V5.]
dnl AC_ARG_WITH(maxmem, , MAXMEM="$withval")
if test "x$MAXMEM" = xyes; then
MAXMEM=1
fi
WITH_JAVA=0
if test "x$with_java" = "xyes"; then
AC_MSG_RESULT(yes)
case $host_os in
darwin*)
DEFAULT_JNI_CFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers
;;
solaris*)
DEFAULT_JNI_CFLAGS='-I/usr/java/include -I/usr/java/include/solaris'
;;
linux*)
DEFAULT_JNI_CFLAGS='-I/usr/java/default/include -I/usr/java/default/include/linux'
;;
esac
if test "x$JNI_CFLAGS" = "x"; then
JNI_CFLAGS=$DEFAULT_JNI_CFLAGS
if test "x$MAXMEM" != xno; then
if test -n "`echo $MAXMEM | sed 's/[[0-9]]//g'`"; then
AC_MSG_ERROR(non-numeric argument to --enable-maxmem)
fi
DEFAULTMAXMEM=`expr $MAXMEM \* 1048576`
AC_DEFINE_UNQUOTED([DEFAULT_MAX_MEM], [${DEFAULTMAXMEM}],
[Maximum data space library will allocate.])
AC_MSG_CHECKING([for 'tmpfile()'])
AC_TRY_LINK([#include <stdio.h>], [ FILE * tfile = tmpfile(); ],
[AC_MSG_RESULT(yes)
MEMORYMGR='jmemansi'],
[AC_MSG_RESULT(no)
dnl if tmpfile is not present, must use jmemname.
MEMORYMGR='jmemname'
SAVE_CPPFLAGS=${CPPFLAGS}
CPPFLAGS="${CPPFLAGS} ${JNI_CFLAGS}"
AC_CHECK_HEADERS([jni.h], [DUMMY=1],
[AC_MSG_ERROR([Could not find JNI header file])])
CPPFLAGS=${SAVE_CPPFLAGS}
AC_SUBST(JNI_CFLAGS)
RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --with-java"
JAVA_RPM_CONTENTS_1='%dir %{_datadir}/classes'
JAVA_RPM_CONTENTS_2=%{_datadir}/classes/turbojpeg.jar
WITH_JAVA=1
else
AC_MSG_RESULT(no)
# Test for the need to remove temporary files using a signal handler
# (for cjpeg/djpeg)
AC_DEFINE([NEED_SIGNAL_CATCHER], [1],
[Need signal handler to clean up temporary files.])
AC_MSG_CHECKING([for 'mktemp()'])
AC_TRY_LINK([], [ char fname[80]; mktemp(fname); ],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([NO_MKTEMP], [1],
[The mktemp() function is not available.])])])
fi
AM_CONDITIONAL([WITH_JAVA], [test "x$with_java" = "xyes"])
AC_SUBST(WITH_JAVA)
AC_SUBST(JAVA_RPM_CONTENTS_1)
AC_SUBST(JAVA_RPM_CONTENTS_2)
AC_SUBST([MEMORYMGR])
# optionally force using gas-preprocessor.pl for compatibility testing
AC_ARG_WITH([gas-preprocessor],
AC_HELP_STRING([--with-gas-preprocessor],
[Force using gas-preprocessor.pl on ARM.]))
if test "x${with_gas_preprocessor}" = "xyes"; then
case $host_os in
darwin*)
CCAS="gas-preprocessor.pl -fix-unreq $CC"
;;
*)
CCAS="gas-preprocessor.pl -no-fix-unreq $CC"
;;
esac
AC_SUBST([CCAS])
fi
# Extract the library version IDs from jpeglib.h.
AC_MSG_CHECKING([libjpeg version number])
[major=`sed -ne 's/^#define JPEG_LIB_VERSION_MAJOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`
minor=`sed -ne 's/^#define JPEG_LIB_VERSION_MINOR *\([0-9][0-9]*\).*$/\1/p' $srcdir/jpeglib.h`]
AC_SUBST([JPEG_LIB_VERSION],
[`expr $major + $minor`:0:$minor])
AC_MSG_RESULT([$JPEG_LIB_VERSION])
# SIMD is optional
AC_ARG_WITH([simd],
AC_HELP_STRING([--without-simd], [Do not include SIMD extensions]))
if test "x$with_12bit" = "xyes"; then
with_simd=no
fi
if test "x${with_simd}" != "xno"; then
require_simd=no
if test "x${with_simd}" = "xyes"; then
require_simd=yes
fi
# Check if we're on a supported CPU
AC_MSG_CHECKING([if we have SIMD optimisations for cpu type])
case "$host_cpu" in
x86_64 | amd64)
AC_MSG_RESULT([yes (x86_64)])
AC_PROG_NASM
simd_arch=x86_64
;;
i*86 | x86 | ia32)
AC_MSG_RESULT([yes (i386)])
AC_PROG_NASM
simd_arch=i386
;;
arm*)
AC_MSG_RESULT([yes (arm)])
AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
AC_CHECK_COMPATIBLE_ARM_ASSEMBLER_IFELSE(
[if test "x$ac_use_gas_preprocessor" = "xyes"; then
AC_MSG_RESULT([yes (with gas-preprocessor)])
else
AC_MSG_RESULT([yes])
fi
simd_arch=arm],
[AC_MSG_RESULT([no])
with_simd=no])
if test "x${with_simd}" = "xno"; then
if test "x${require_simd}" = "xyes"; then
AC_MSG_ERROR([SIMD support can't be enabled.])
else
AC_MSG_WARN([SIMD support can't be enabled. Performance will suffer.])
fi
fi
;;
aarch64*)
AC_MSG_RESULT([yes (arm64)])
AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
AC_CHECK_COMPATIBLE_ARM64_ASSEMBLER_IFELSE(
[if test "x$ac_use_gas_preprocessor" = "xyes"; then
AC_MSG_RESULT([yes (with gas-preprocessor)])
else
AC_MSG_RESULT([yes])
fi
simd_arch=aarch64],
[AC_MSG_RESULT([no])
with_simd=no])
if test "x${with_simd}" = "xno"; then
if test "x${require_simd}" = "xyes"; then
AC_MSG_ERROR([SIMD support can't be enabled.])
else
AC_MSG_WARN([SIMD support can't be enabled. Performance will suffer.])
fi
fi
;;
mips*)
AC_MSG_RESULT([yes (mips)])
AC_MSG_CHECKING([if the assembler is GNU-compatible and can be used])
AC_CHECK_COMPATIBLE_MIPS_ASSEMBLER_IFELSE(
[AC_MSG_RESULT([yes])
simd_arch=mips],
[AC_MSG_RESULT([no])
with_simd=no])
if test "x${with_simd}" = "xno"; then
if test "x${require_simd}" = "xyes"; then
AC_MSG_ERROR([SIMD support can't be enabled.])
else
AC_MSG_WARN([SIMD support can't be enabled. Performance will suffer.])
fi
fi
;;
powerpc*)
AC_MSG_RESULT([yes (powerpc)])
simd_arch=powerpc
;;
*)
AC_MSG_RESULT([no ("$host_cpu")])
with_simd=no;
if test "x${require_simd}" = "xyes"; then
AC_MSG_ERROR([SIMD support not available for this CPU.])
else
AC_MSG_WARN([SIMD support not available for this CPU. Performance will suffer.])
fi
;;
esac
if test "x${with_simd}" != "xno"; then
AC_DEFINE([WITH_SIMD], [1], [Use accelerated SIMD routines.])
fi
else
RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-simd"
fi
AM_CONDITIONAL([WITH_SIMD], [test "x$with_simd" != "xno"])
AM_CONDITIONAL([WITH_SSE_FLOAT_DCT], [test "x$simd_arch" = "xx86_64" -o "x$simd_arch" = "xi386"])
AM_CONDITIONAL([SIMD_I386], [test "x$simd_arch" = "xi386"])
AM_CONDITIONAL([SIMD_X86_64], [test "x$simd_arch" = "xx86_64"])
AM_CONDITIONAL([SIMD_ARM], [test "x$simd_arch" = "xarm"])
AM_CONDITIONAL([SIMD_ARM_64], [test "x$simd_arch" = "xaarch64"])
AM_CONDITIONAL([SIMD_MIPS], [test "x$simd_arch" = "xmips"])
AM_CONDITIONAL([SIMD_POWERPC], [test "x$simd_arch" = "xpowerpc"])
AM_CONDITIONAL([X86_64], [test "x$host_cpu" = "xx86_64" -o "x$host_cpu" = "xamd64"])
AM_CONDITIONAL([WITH_TURBOJPEG], [test "x$with_turbojpeg" != "xno"])
AM_CONDITIONAL([CROSS_COMPILING], [test "x$cross_compiling" = "xyes"])
AC_ARG_VAR(PKGNAME, [distribution package name (default: mozjpeg)])
if test "x$PKGNAME" = "x"; then
PKGNAME=$PACKAGE_NAME
fi
AC_SUBST(PKGNAME)
case "$host_cpu" in
x86_64)
RPMARCH=x86_64
DEBARCH=amd64
;;
i*86 | x86 | ia32)
RPMARCH=i386
DEBARCH=i386
;;
*)
RPMARCH=`uname -m`
DEBARCH=$RPMARCH
;;
esac
if test "${docdir}" = ""; then
docdir=${datadir}/doc
AC_SUBST(docdir)
fi
AC_SUBST(RPMARCH)
AC_SUBST(RPM_CONFIG_ARGS)
AC_SUBST(DEBARCH)
AC_SUBST(BUILD)
AC_DEFINE_UNQUOTED([BUILD], "$BUILD", [libjpeg-turbo build number])
# NOTE: autoheader automatically modifies the input file of the first
# invocation of AC_CONFIG_HEADERS, so we put config.h first to prevent
# jconfig.h.in from being clobbered. config.h is used only internally, whereas
# jconfig.h contains macros that are relevant to external programs (macros that
# specify which features were built into the library.)
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_HEADERS([jconfig.h])
AC_CONFIG_HEADERS([jconfigint.h])
AC_CONFIG_FILES([pkgscripts/mozjpeg.spec.tmpl:release/mozjpeg.spec.in])
AC_CONFIG_FILES([pkgscripts/makecygwinpkg.tmpl:release/makecygwinpkg.in])
AC_CONFIG_FILES([pkgscripts/makedpkg.tmpl:release/makedpkg.in])
AC_CONFIG_FILES([pkgscripts/makemacpkg.tmpl:release/makemacpkg.in])
AC_CONFIG_FILES([pkgscripts/uninstall.tmpl:release/uninstall.in])
AC_CONFIG_FILES([pkgscripts/libjpeg.pc:release/libjpeg.pc.in])
AC_CONFIG_FILES([pkgscripts/libturbojpeg.pc:release/libturbojpeg.pc.in])
if test "x$with_turbojpeg" != "xno"; then
AC_CONFIG_FILES([tjbenchtest])
fi
if test "x$with_java" = "xyes"; then
AC_CONFIG_FILES([tjbenchtest.java])
AC_CONFIG_FILES([tjexampletest])
fi
AC_CONFIG_FILES([libjpeg.map])
AC_CONFIG_FILES([Makefile simd/Makefile])
AC_CONFIG_FILES([java/Makefile])
AC_CONFIG_FILES([md5/Makefile])
AC_CONFIG_FILES([Makefile libjpeg.pc])
AC_OUTPUT

791
depcomp Executable file
View File

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

79
djpeg.1
View File

@@ -1,4 +1,4 @@
.TH DJPEG 1 "18 February 2016"
.TH DJPEG 1 "26 July 2015"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
@@ -55,19 +55,23 @@ default options are chosen for highest quality output.) Currently, this is
equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
.TP
.B \-grayscale
Force grayscale output even if JPEG file is color. Useful for viewing on
monochrome displays; also,
Force grayscale output even if JPEG file is color.
Useful for viewing on monochrome displays; also,
.B djpeg
runs noticeably faster in this mode.
.TP
.B \-rgb
Force RGB output even if JPEG file is grayscale.
This is provided to support applications that don't
want to cope with grayscale as a separate case.
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently the scale factor must be
M/8, where M is an integer between 1 and 16 inclusive, or any reduced fraction
thereof (such as 1/2, 3/4, etc.) Scaling is handy if the image is larger than
your screen; also,
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all M from 1 to 16, where N is the source DCT size, which is 8 for
baseline JPEG. If the /N part is omitted, then M specifies the DCT scaled
size to be applied on the given input. For baseline JPEG this is equivalent
to M/8 scaling, since the source DCT size for baseline JPEG is 8.
Scaling is handy if the image is larger than your screen; also,
.B djpeg
runs much faster when scaling down the output.
.TP
@@ -118,28 +122,14 @@ Use integer DCT method (default).
.TP
.B \-dct fast
Use fast integer DCT (less accurate).
In libjpeg-turbo, the fast method is generally about 5-15% faster than the int
method when using the x86/x86-64 SIMD extensions (results may vary with other
SIMD implementations, or when using libjpeg-turbo without SIMD extensions.) If
the JPEG image was compressed using a quality level of 85 or below, then there
should be little or no perceptible difference between the two algorithms. When
decompressing images that were compressed using quality levels above 85,
however, the difference between the fast and int methods becomes more
pronounced. With images compressed using quality=97, for instance, the fast
method incurs generally about a 4-6 dB loss (in PSNR) relative to the int
method, but this can be larger for some images. If you can avoid it, do not
use the fast method when decompressing images that were compressed using
quality levels above 97. The algorithm often degenerates for such images and
can actually produce a more lossy output image than if the JPEG image had been
compressed using lower quality levels.
.TP
.B \-dct float
Use floating-point DCT method.
The float method is mainly a legacy feature. It does not produce significantly
more accurate results than the int method, and it is much slower. The float
method may also give different results on different machines due to varying
roundoff behavior, whereas the integer methods should give the same results on
all machines.
The float method is very slightly more accurate than the int method, but is
much slower unless your machine has very fast floating-point hardware. Also
note that results of the floating-point method may vary slightly across
machines, while the integer methods should give the same results everywhere.
The fast integer method is much less accurate than the other two.
.TP
.B \-dither fs
Use Floyd-Steinberg dithering in color quantization.
@@ -168,7 +158,7 @@ and
.BR \-onepass .
.TP
.B \-nosmooth
Use a faster, lower-quality upsampling routine.
Don't use high-quality upsampling.
.TP
.B \-onepass
Use one-pass instead of two-pass color quantization. The one-pass method is
@@ -190,22 +180,6 @@ selects 4000000 bytes. If more space is needed, temporary files will be used.
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.BI \-memsrc
Load input file into memory before decompressing. This feature was implemented
mainly as a way of testing the in-memory source manager (jpeg_mem_src().)
.TP
.BI \-skip " Y0,Y1"
Decompress all rows of the JPEG image except those between Y0 and Y1
(inclusive.) Note that if decompression scaling is being used, then Y0 and Y1
are relative to the scaled image dimensions.
.TP
.BI \-crop " WxH+X+Y"
Decompress only a rectangular subregion of the image, starting at point X,Y
with width W and height H. If necessary, X will be shifted left to the nearest
iMCU boundary, and the width will be increased accordingly. Note that if
decompression scaling is being used, then X, Y, W, and H are relative to the
scaled image dimensions.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
@@ -214,9 +188,6 @@ give more output. Also, version information is printed at startup.
.B \-debug
Same as
.BR \-verbose .
.TP
.B \-version
Print version information and exit.
.SH EXAMPLES
.LP
This example decompresses the JPEG file foo.jpg, quantizes it to
@@ -279,14 +250,8 @@ Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.PP
This file was modified by The libjpeg-turbo Project to include only information
relevant to libjpeg-turbo, to wordsmith certain sections, and to describe
features not present in libjpeg.
.SH ISSUES
Support for compressed GIF output files was removed in djpeg v6b due to
concerns over the Unisys LZW patent. Although this patent expired in 2006,
djpeg still lacks compressed GIF support, for these historical reasons.
(Conversion of JPEG files to GIF is usually a bad idea anyway, since GIF is a
256-color format.) The uncompressed GIF files that djpeg generates are larger
than they should be, but they are readable by standard GIF decoders.
.SH BUGS
To avoid the Unisys LZW patent (now expired),
.B djpeg
produces uncompressed GIF files. These are larger than they should be, but
are readable by standard GIF decoders.

399
djpeg.c
View File

@@ -1,22 +1,18 @@
/*
* djpeg.c
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1991-1997, Thomas G. Lane.
* Modified 2013 by Guido Vollbeding.
* libjpeg-turbo Modifications:
* Copyright (C) 2010-2011, 2013-2016, D. R. Commander.
* Copyright (C) 2015, Google, Inc.
* For conditions of distribution and use, see the accompanying README.ijg
* file.
* Modified 2009-2015 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains a command-line user interface for the JPEG decompressor.
* It should work on any system with Unix- or MS-DOS-style command lines.
*
* Two different command line styles are permitted, depending on the
* compile-time switch TWO_FILE_COMMANDLINE:
* djpeg [options] inputfile outputfile
* djpeg [options] [inputfile]
* djpeg [options] inputfile outputfile
* djpeg [options] [inputfile]
* In the second style, output is always to standard output, which you'd
* normally redirect to a file or pipe to some other program. Input is
* either from a named file or from standard input (typically redirected).
@@ -24,31 +20,29 @@
* don't support pipes. Also, you MUST use the first style if your system
* doesn't do binary I/O to stdin/stdout.
* To simplify script writing, the "-outfile" switch is provided. The syntax
* djpeg [options] -outfile outputfile inputfile
* djpeg [options] -outfile outputfile inputfile
* works regardless of which command line style is used.
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include "jconfigint.h"
#include "wrppm.h"
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include <ctype.h> /* to declare isprint() */
#include <ctype.h> /* to declare isprint() */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef USE_CCOMMAND /* command-line reader for Macintosh */
#ifdef __MWERKS__
#include <SIOUX.h> /* Metrowerks needs this */
#include <console.h> /* ... and this */
#include <console.h> /* ... and this */
#endif
#ifdef THINK_C
#include <console.h> /* Think declares it here */
#include <console.h> /* Think declares it here */
#endif
#endif
/* Create the add-on message string table. */
#define JMESSAGE(code,string) string ,
#define JMESSAGE(code,string) string ,
static const char * const cdjpeg_message_table[] = {
#include "cderror.h"
@@ -64,17 +58,17 @@ static const char * const cdjpeg_message_table[] = {
*/
typedef enum {
FMT_BMP, /* BMP format (Windows flavor) */
FMT_GIF, /* GIF format */
FMT_OS2, /* BMP format (OS/2 flavor) */
FMT_PPM, /* PPM/PGM (PBMPLUS formats) */
FMT_RLE, /* RLE format */
FMT_TARGA, /* Targa format */
FMT_TIFF /* TIFF format */
FMT_BMP, /* BMP format (Windows flavor) */
FMT_GIF, /* GIF format */
FMT_OS2, /* BMP format (OS/2 flavor) */
FMT_PPM, /* PPM/PGM (PBMPLUS formats) */
FMT_RLE, /* RLE format */
FMT_TARGA, /* Targa format */
FMT_TIFF /* TIFF format */
} IMAGE_FORMATS;
#ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */
#define DEFAULT_FMT FMT_PPM
#ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */
#define DEFAULT_FMT FMT_PPM
#endif
static IMAGE_FORMATS requested_fmt;
@@ -89,13 +83,8 @@ static IMAGE_FORMATS requested_fmt;
*/
static const char *progname; /* program name for error messages */
static char *outfilename; /* for -outfile switch */
boolean memsrc; /* for -memsrc switch */
boolean skip, crop;
JDIMENSION skip_start, skip_end;
JDIMENSION crop_x, crop_y, crop_width, crop_height;
#define INPUT_BUF_SIZE 4096
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
@@ -114,46 +103,45 @@ usage (void)
fprintf(stderr, " -fast Fast, low-quality processing\n");
fprintf(stderr, " -grayscale Force grayscale output\n");
fprintf(stderr, " -rgb Force RGB output\n");
fprintf(stderr, " -rgb565 Force RGB565 output\n");
#ifdef IDCT_SCALING_SUPPORTED
fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n");
#endif
#ifdef BMP_SUPPORTED
fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n",
(DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
(DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
#endif
#ifdef GIF_SUPPORTED
fprintf(stderr, " -gif Select GIF output format%s\n",
(DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
(DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
#endif
#ifdef BMP_SUPPORTED
fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n",
(DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
(DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
#endif
#ifdef PPM_SUPPORTED
fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n",
(DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
(DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
#endif
#ifdef RLE_SUPPORTED
fprintf(stderr, " -rle Select Utah RLE output format%s\n",
(DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
(DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Select Targa output format%s\n",
(DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
(DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
#endif
fprintf(stderr, "Switches for advanced users:\n");
#ifdef DCT_ISLOW_SUPPORTED
fprintf(stderr, " -dct int Use integer DCT method%s\n",
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
#endif
#ifdef DCT_FLOAT_SUPPORTED
fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
#endif
fprintf(stderr, " -dither fs Use F-S dithering (default)\n");
fprintf(stderr, " -dither none Don't use dithering in quantization\n");
@@ -167,21 +155,14 @@ usage (void)
#endif
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
fprintf(stderr, " -memsrc Load input file into memory before decompressing\n");
#endif
fprintf(stderr, " -skip Y0,Y1 Decompress all rows except those between Y0 and Y1 (inclusive)\n");
fprintf(stderr, " -crop WxH+X+Y Decompress only a rectangular subregion of the image\n");
fprintf(stderr, " -verbose or -debug Emit debug output\n");
fprintf(stderr, " -version Print version information and exit\n");
exit(EXIT_FAILURE);
}
LOCAL(int)
parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
int last_file_arg_seen, boolean for_real)
/* Parse optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
@@ -192,14 +173,11 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
*/
{
int argn;
char *arg;
char * arg;
/* Set up default JPEG parameters. */
requested_fmt = DEFAULT_FMT; /* set default output file format */
requested_fmt = DEFAULT_FMT; /* set default output file format */
outfilename = NULL;
memsrc = FALSE;
skip = FALSE;
crop = FALSE;
cinfo->err->trace_level = 0;
/* Scan command line options, adjust parameters */
@@ -209,54 +187,54 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
if (*arg != '-') {
/* Not a switch, must be a file name argument */
if (argn <= last_file_arg_seen) {
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
outfilename = NULL; /* -outfile applies to just one input file */
continue; /* ignore this name if previously processed */
}
break; /* else done parsing switches */
break; /* else done parsing switches */
}
arg++; /* advance past switch marker character */
arg++; /* advance past switch marker character */
if (keymatch(arg, "bmp", 1)) {
/* BMP output format. */
requested_fmt = FMT_BMP;
} else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) ||
keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) {
/* Do color quantization. */
int val;
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%d", &val) != 1)
usage();
usage();
cinfo->desired_number_of_colors = val;
cinfo->quantize_colors = TRUE;
} else if (keymatch(arg, "dct", 2)) {
/* Select IDCT algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "int", 1)) {
cinfo->dct_method = JDCT_ISLOW;
cinfo->dct_method = JDCT_ISLOW;
} else if (keymatch(argv[argn], "fast", 2)) {
cinfo->dct_method = JDCT_IFAST;
cinfo->dct_method = JDCT_IFAST;
} else if (keymatch(argv[argn], "float", 2)) {
cinfo->dct_method = JDCT_FLOAT;
cinfo->dct_method = JDCT_FLOAT;
} else
usage();
usage();
} else if (keymatch(arg, "dither", 2)) {
/* Select dithering algorithm. */
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (keymatch(argv[argn], "fs", 2)) {
cinfo->dither_mode = JDITHER_FS;
cinfo->dither_mode = JDITHER_FS;
} else if (keymatch(argv[argn], "none", 2)) {
cinfo->dither_mode = JDITHER_NONE;
cinfo->dither_mode = JDITHER_NONE;
} else if (keymatch(argv[argn], "ordered", 2)) {
cinfo->dither_mode = JDITHER_ORDERED;
cinfo->dither_mode = JDITHER_ORDERED;
} else
usage();
usage();
} else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) {
/* Enable debug printouts. */
@@ -264,26 +242,18 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
static boolean printed_version = FALSE;
if (! printed_version) {
fprintf(stderr, "%s version %s (build %s)\n",
PACKAGE_NAME, VERSION, BUILD);
fprintf(stderr, "%s\n\n", JCOPYRIGHT);
fprintf(stderr, "Emulating The Independent JPEG Group's software, version %s\n\n",
JVERSION);
printed_version = TRUE;
fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n",
JVERSION, JCOPYRIGHT);
printed_version = TRUE;
}
cinfo->err->trace_level++;
} else if (keymatch(arg, "version", 4)) {
fprintf(stderr, "%s version %s (build %s)\n",
PACKAGE_NAME, VERSION, BUILD);
exit(EXIT_SUCCESS);
} else if (keymatch(arg, "fast", 1)) {
/* Select recommended processing options for quick-and-dirty output. */
cinfo->two_pass_quantize = FALSE;
cinfo->dither_mode = JDITHER_ORDERED;
if (! cinfo->quantize_colors) /* don't override an earlier -colors */
cinfo->desired_number_of_colors = 216;
cinfo->desired_number_of_colors = 216;
cinfo->dct_method = JDCT_FASTEST;
cinfo->do_fancy_upsampling = FALSE;
@@ -295,31 +265,27 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
/* Force monochrome output. */
cinfo->out_color_space = JCS_GRAYSCALE;
} else if (keymatch(arg, "rgb", 2)) {
} else if (keymatch(arg, "rgb", 3)) {
/* Force RGB output. */
cinfo->out_color_space = JCS_RGB;
} else if (keymatch(arg, "rgb565", 2)) {
/* Force RGB565 output. */
cinfo->out_color_space = JCS_RGB565;
} else if (keymatch(arg, "map", 3)) {
/* Quantize to a color map taken from an input file. */
if (++argn >= argc) /* advance to next argument */
usage();
if (for_real) { /* too expensive to do twice! */
#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */
FILE *mapfile;
if (++argn >= argc) /* advance to next argument */
usage();
if (for_real) { /* too expensive to do twice! */
#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */
FILE * mapfile;
if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
exit(EXIT_FAILURE);
}
read_color_map(cinfo, mapfile);
fclose(mapfile);
cinfo->quantize_colors = TRUE;
if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]);
exit(EXIT_FAILURE);
}
read_color_map(cinfo, mapfile);
fclose(mapfile);
cinfo->quantize_colors = TRUE;
#else
ERREXIT(cinfo, JERR_NOT_COMPILED);
ERREXIT(cinfo, JERR_NOT_COMPILED);
#endif
}
@@ -328,16 +294,16 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1)
usage();
usage();
if (ch == 'm' || ch == 'M')
lval *= 1000L;
lval *= 1000L;
cinfo->mem->max_memory_to_use = lval * 1000L;
} else if (keymatch(arg, "nosmooth", 3)) {
/* Suppress fancy upsampling */
/* Suppress fancy upsampling. */
cinfo->do_fancy_upsampling = FALSE;
} else if (keymatch(arg, "onepass", 3)) {
@@ -350,19 +316,9 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
} else if (keymatch(arg, "outfile", 4)) {
/* Set output file name. */
if (++argn >= argc) /* advance to next argument */
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "memsrc", 2)) {
/* Use in-memory source manager */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
memsrc = TRUE;
#else
fprintf(stderr, "%s: sorry, in-memory source manager was not compiled in\n",
progname);
exit(EXIT_FAILURE);
#endif
if (++argn >= argc) /* advance to next argument */
usage();
outfilename = argv[argn]; /* save it away for later use */
} else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) {
/* PPM/PGM output format. */
@@ -372,42 +328,24 @@ parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
/* RLE output format. */
requested_fmt = FMT_RLE;
} else if (keymatch(arg, "scale", 2)) {
} else if (keymatch(arg, "scale", 1)) {
/* Scale the output image by a fraction M/N. */
if (++argn >= argc) /* advance to next argument */
usage();
if (++argn >= argc) /* advance to next argument */
usage();
if (sscanf(argv[argn], "%u/%u",
&cinfo->scale_num, &cinfo->scale_denom) != 2)
usage();
} else if (keymatch(arg, "skip", 2)) {
if (++argn >= argc)
usage();
if (sscanf(argv[argn], "%u,%u", &skip_start, &skip_end) != 2 ||
skip_start > skip_end)
usage();
skip = TRUE;
} else if (keymatch(arg, "crop", 2)) {
char c;
if (++argn >= argc)
usage();
if (sscanf(argv[argn], "%u%c%u+%u+%u", &crop_width, &c, &crop_height,
&crop_x, &crop_y) != 5 ||
(c != 'X' && c != 'x') || crop_width < 1 || crop_height < 1)
usage();
crop = TRUE;
&cinfo->scale_num, &cinfo->scale_denom) < 1)
usage();
} else if (keymatch(arg, "targa", 1)) {
/* Targa output format. */
requested_fmt = FMT_TARGA;
} else {
usage(); /* bogus switch */
usage(); /* bogus switch */
}
}
return argn; /* return index of next arg (file name) */
return argn; /* return index of next arg (file name) */
}
@@ -422,7 +360,7 @@ LOCAL(unsigned int)
jpeg_getc (j_decompress_ptr cinfo)
/* Read next byte */
{
struct jpeg_source_mgr *datasrc = cinfo->src;
struct jpeg_source_mgr * datasrc = cinfo->src;
if (datasrc->bytes_in_buffer == 0) {
if (! (*datasrc->fill_input_buffer) (cinfo))
@@ -437,20 +375,20 @@ METHODDEF(boolean)
print_text_marker (j_decompress_ptr cinfo)
{
boolean traceit = (cinfo->err->trace_level >= 1);
long length;
INT32 length;
unsigned int ch;
unsigned int lastch = 0;
length = jpeg_getc(cinfo) << 8;
length += jpeg_getc(cinfo);
length -= 2; /* discount the length word itself */
length -= 2; /* discount the length word itself */
if (traceit) {
if (cinfo->unread_marker == JPEG_COM)
fprintf(stderr, "Comment, length %ld:\n", (long) length);
else /* assume it is an APPn otherwise */
else /* assume it is an APPn otherwise */
fprintf(stderr, "APP%d, length %ld:\n",
cinfo->unread_marker - JPEG_APP0, (long) length);
cinfo->unread_marker - JPEG_APP0, (long) length);
}
while (--length >= 0) {
@@ -462,16 +400,16 @@ print_text_marker (j_decompress_ptr cinfo)
* Newlines in CR, CR/LF, or LF form will be printed as one newline.
*/
if (ch == '\r') {
fprintf(stderr, "\n");
fprintf(stderr, "\n");
} else if (ch == '\n') {
if (lastch != '\r')
fprintf(stderr, "\n");
if (lastch != '\r')
fprintf(stderr, "\n");
} else if (ch == '\\') {
fprintf(stderr, "\\\\");
fprintf(stderr, "\\\\");
} else if (isprint(ch)) {
putc(ch, stderr);
putc(ch, stderr);
} else {
fprintf(stderr, "\\%03o", ch);
fprintf(stderr, "\\%03o", ch);
}
lastch = ch;
}
@@ -498,10 +436,8 @@ main (int argc, char **argv)
#endif
int file_index;
djpeg_dest_ptr dest_mgr = NULL;
FILE *input_file;
FILE *output_file;
unsigned char *inbuffer = NULL;
unsigned long insize = 0;
FILE * input_file;
FILE * output_file;
JDIMENSION num_scanlines;
/* On Mac, fetch a command line. */
@@ -511,7 +447,7 @@ main (int argc, char **argv)
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "djpeg"; /* in case C library doesn't provide it */
progname = "djpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG decompression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
@@ -525,11 +461,16 @@ main (int argc, char **argv)
* APP12 is used by some digital camera makers for textual info,
* so we provide the ability to display it as text.
* If you like, additional APPn marker types can be selected for display,
* but don't try to override APP0 or APP14 this way (see libjpeg.txt).
* but don't try to override APP0 or APP14 this way (see libjpeg.doc).
*/
jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Scan command line to find file names. */
/* It is convenient to use just one switch-parsing routine, but the switch
* values read here are ignored; we will rescan the switches after opening
@@ -545,14 +486,14 @@ main (int argc, char **argv)
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
progname);
usage();
}
}
@@ -591,30 +532,7 @@ main (int argc, char **argv)
#endif
/* Specify data source for decompression */
#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(input_file, &inbuffer[insize], INPUT_BUF_SIZE);
if (nbytes < INPUT_BUF_SIZE && ferror(input_file)) {
if (file_index < argc)
fprintf(stderr, "%s: can't read from %s\n", progname,
argv[file_index]);
else
fprintf(stderr, "%s: can't read from stdin\n", progname);
}
insize += (unsigned long)nbytes;
} while (nbytes == INPUT_BUF_SIZE);
fprintf(stderr, "Compressed size: %lu bytes\n", insize);
jpeg_mem_src(&cinfo, inbuffer, insize);
} else
#endif
jpeg_stdio_src(&cinfo, input_file);
jpeg_stdio_src(&cinfo, input_file);
/* Read file header, set default decompression parameters */
(void) jpeg_read_header(&cinfo, TRUE);
@@ -663,88 +581,14 @@ main (int argc, char **argv)
/* Start decompressor */
(void) jpeg_start_decompress(&cinfo);
/* Skip rows */
if (skip) {
JDIMENSION tmp;
/* Write output file header */
(*dest_mgr->start_output) (&cinfo, dest_mgr);
/* Check for valid skip_end. We cannot check this value until after
* jpeg_start_decompress() is called. Note that we have already verified
* that skip_start <= skip_end.
*/
if (skip_end > cinfo.output_height - 1) {
fprintf(stderr, "%s: skip region exceeds image height %d\n", progname,
cinfo.output_height);
exit(EXIT_FAILURE);
}
/* Write output file header. This is a hack to ensure that the destination
* manager creates an output image of the proper size.
*/
tmp = cinfo.output_height;
cinfo.output_height -= (skip_end - skip_start + 1);
(*dest_mgr->start_output) (&cinfo, dest_mgr);
cinfo.output_height = tmp;
/* Process data */
while (cinfo.output_scanline < skip_start) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
jpeg_skip_scanlines(&cinfo, skip_end - skip_start + 1);
while (cinfo.output_scanline < cinfo.output_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
/* Decompress a subregion */
} else if (crop) {
JDIMENSION tmp;
/* Check for valid crop dimensions. We cannot check these values until
* after jpeg_start_decompress() is called.
*/
if (crop_x + crop_width > cinfo.output_width ||
crop_y + crop_height > cinfo.output_height) {
fprintf(stderr, "%s: crop dimensions exceed image dimensions %d x %d\n",
progname, cinfo.output_width, cinfo.output_height);
exit(EXIT_FAILURE);
}
jpeg_crop_scanline(&cinfo, &crop_x, &crop_width);
((ppm_dest_ptr) dest_mgr)->buffer_width = cinfo.output_width *
cinfo.out_color_components *
sizeof(JSAMPLE);
/* Write output file header. This is a hack to ensure that the destination
* manager creates an output image of the proper size.
*/
tmp = cinfo.output_height;
cinfo.output_height = crop_height;
(*dest_mgr->start_output) (&cinfo, dest_mgr);
cinfo.output_height = tmp;
/* Process data */
jpeg_skip_scanlines(&cinfo, crop_y);
while (cinfo.output_scanline < crop_y + crop_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
jpeg_skip_scanlines(&cinfo, cinfo.output_height - crop_y - crop_height);
/* Normal full-image decompress */
} else {
/* Write output file header */
(*dest_mgr->start_output) (&cinfo, dest_mgr);
/* Process data */
while (cinfo.output_scanline < cinfo.output_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
/* Process data */
while (cinfo.output_scanline < cinfo.output_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
#ifdef PROGRESS_REPORT
@@ -772,10 +616,7 @@ main (int argc, char **argv)
end_progress_monitor((j_common_ptr) &cinfo);
#endif
if (memsrc && inbuffer != NULL)
free(inbuffer);
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
return 0; /* suppress no-return-value warnings */
}

104
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<div class="textblock">Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:</div><ul>
<li>customFilter
: <a class="el" href="structtjtransform.html#a43ee1bcdd2a8d7249a756774f78793c1">tjtransform</a>
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&#160;<ul>
<li>customFilter
: <a class="el" href="structtjtransform.html#a43ee1bcdd2a8d7249a756774f78793c1">tjtransform</a>
</li>
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: <a class="el" href="structtjscalingfactor.html#aefbcdf3e9e62274b2d312c695f133ce3">tjscalingfactor</a>
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<li>num
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