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1 Commits
2.0.3 ... 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
595 changed files with 79881 additions and 132072 deletions
Expand all files Collapse all files

5
.gitattributes vendored
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/.travis.yml export-ignore
/appveyor.yml export-ignore
/ci export-ignore
/.gitattributes export-ignore
/.github export-ignore

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

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

8
.github/ISSUE_TEMPLATE/feature-request.md vendored
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---
name: Feature Request
about: Suggest new libjpeg-turbo functionality
title: ''
labels: enhancement
assignees: dcommander
---

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

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

4
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brew 'yasm'
brew 'gcc@5'
brew 'md5sha1sum'
cask 'Caskroom/versions/java6'

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

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

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221
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).
@@ -43,13 +41,14 @@ User documentation:
change.log Version-to-version change highlights.
Programmer and internal documentation:
libjpeg.txt How to use the JPEG library in your own programs.
example.txt Sample code for calling the JPEG library.
example.c Sample code for calling the JPEG library.
structure.txt Overview of the JPEG library's internal structure.
filelist.txt Road map of IJG files.
coderules.txt Coding style rules --- please read if you contribute code.
Please read at least usage.txt. Some information can also be found in the JPEG
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
@@ -159,6 +146,12 @@ commercial products, provided that all warranty or liability claims are
assumed by the product vendor.
The Unix configuration script "configure" was produced with GNU Autoconf.
It is copyright by the Free Software Foundation but is freely distributable.
The same holds for its supporting scripts (config.guess, config.sub,
ltmain.sh). Another support script, install-sh, is copyright by X Consortium
but is also freely distributable.
The IJG distribution formerly included code to read and write GIF files.
To avoid entanglement with the Unisys LZW patent (now expired), GIF reading
support has been removed altogether, and the GIF writer has been simplified
@@ -166,11 +159,6 @@ to produce "uncompressed GIFs". This technique does not use the LZW
algorithm; the resulting GIF files are larger than usual, but are readable
by all standard GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the Copyright property of
CompuServe Incorporated. GIF(sm) is a Service Mark property of
CompuServe Incorporated."
REFERENCES
==========
@@ -179,8 +167,8 @@ We recommend reading one or more of these references before trying to
understand the innards of the JPEG software.
The best short technical introduction to the JPEG compression algorithm is
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
(Adjacent articles in that issue discuss MPEG motion picture compression,
applications of JPEG, and related topics.) If you don't have the CACM issue
handy, a PDF file containing a revised version of Wallace's article is
@@ -204,6 +192,14 @@ Image Data Compression Standard" by William B. Pennebaker and Joan L.
Mitchell, published by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1.
Price US$59.95, 638 pp. The book includes the complete text of the ISO JPEG
standards (DIS 10918-1 and draft DIS 10918-2).
Although this is by far the most detailed and comprehensive exposition of
JPEG publicly available, we point out that it is still missing an explanation
of the most essential properties and algorithms of the underlying DCT
technology.
If you think that you know about DCT-based JPEG after reading this book,
then you are in delusion. The real fundamentals and corresponding potential
of DCT-based JPEG are not publicly known so far, and that is the reason for
all the mistaken developments taking place in the image coding domain.
The original JPEG standard is divided into two parts, Part 1 being the actual
specification, while Part 2 covers compliance testing methods. Part 1 is
@@ -212,15 +208,24 @@ Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
10918-1, ITU-T T.81. Part 2 is titled "Digital Compression and Coding of
Continuous-tone Still Images, Part 2: Compliance testing" and has document
numbers ISO/IEC IS 10918-2, ITU-T T.83.
IJG JPEG 8 introduced an implementation of the JPEG SmartScale extension
which is specified in two documents: A contributed document at ITU and ISO
with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced
Image Coding", April 2006, Geneva, Switzerland. The latest version of this
document is Revision 3. And a contributed document ISO/IEC JTC1/SC29/WG1 N
5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany.
IJG JPEG 9 introduces a reversible color transform for improved lossless
compression which is described in a contributed document ISO/IEC JTC1/SC29/
WG1 N 6080 with title "JPEG 9 Lossless Coding", June/July 2012, Paris,
France.
The JPEG standard does not specify all details of an interchangeable file
format. For the omitted details, we follow the "JFIF" conventions, revision
1.02. JFIF version 1 has been adopted as ISO/IEC 10918-5 (05/2013) and
Recommendation ITU-T T.871 (05/2011): Information technology - Digital
compression and coding of continuous-tone still images: JPEG File Interchange
Format (JFIF). It is available as a free download in PDF file format from
https://www.iso.org/standard/54989.html and http://www.itu.int/rec/T-REC-T.871.
A PDF file of the older JFIF 1.02 specification is available at
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
@@ -240,7 +245,9 @@ ARCHIVE LOCATIONS
The "official" archive site for this software is www.ijg.org.
The most recent released version can always be found there in
directory "files".
directory "files". This particular version will be archived as
http://www.ijg.org/files/jpegsrc.v9c.tar.gz, and in Windows-compatible
"zip" archive format as http://www.ijg.org/files/jpegsr9c.zip.
The JPEG FAQ (Frequently Asked Questions) article is a source of some
general information about JPEG.
@@ -249,29 +256,123 @@ and other news.answers archive sites, including the official news.answers
archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/.
If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu
with body
send usenet/news.answers/jpeg-faq/part1
send usenet/news.answers/jpeg-faq/part2
send usenet/news.answers/jpeg-faq/part1
send usenet/news.answers/jpeg-faq/part2
FILE FORMAT COMPATIBILITY
=========================
ACKNOWLEDGMENTS
===============
This software implements ITU T.81 | ISO/IEC 10918 with some extensions from
ITU T.871 | ISO/IEC 10918-5 (JPEG File Interchange Format-- see REFERENCES).
Informally, the term "JPEG image" or "JPEG file" most often refers to JFIF or
a subset thereof, but there are other formats containing the name "JPEG" that
are incompatible with the DCT-based JPEG standard or with JFIF (for instance,
JPEG 2000 and JPEG XR). This software therefore does not support these
formats. Indeed, one of the original reasons for developing this free software
was to help force convergence on a common, interoperable format standard for
JPEG files.
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.
JFIF is a minimal or "low end" representation. TIFF/JPEG (TIFF revision 6.0 as
modified by TIFF Technical Note #2) can be used for "high end" applications
that need to record a lot of additional data about an image.
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 (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.

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

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

60
appveyor.yml
View File

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

270
ar-lib Executable file
View File

@@ -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

24
cderror.h
View File

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

98
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
@@ -28,19 +65,18 @@
#ifdef PROGRESS_REPORT
METHODDEF(void)
progress_monitor(j_common_ptr cinfo)
progress_monitor (j_common_ptr cinfo)
{
cd_progress_ptr prog = (cd_progress_ptr)cinfo->progress;
cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress;
int total_passes = prog->pub.total_passes + prog->total_extra_passes;
int percent_done =
(int)(prog->pub.pass_counter * 100L / prog->pub.pass_limit);
int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit);
if (percent_done != prog->percent_done) {
prog->percent_done = percent_done;
if (total_passes > 1) {
fprintf(stderr, "\rPass %d/%d: %3d%% ",
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
prog->pub.completed_passes + prog->completed_extra_passes + 1,
total_passes, percent_done);
} else {
fprintf(stderr, "\r %3d%% ", percent_done);
}
@@ -50,7 +86,7 @@ progress_monitor(j_common_ptr cinfo)
GLOBAL(void)
start_progress_monitor(j_common_ptr cinfo, cd_progress_ptr progress)
start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress)
{
/* Enable progress display, unless trace output is on */
if (cinfo->err->trace_level == 0) {
@@ -64,7 +100,7 @@ start_progress_monitor(j_common_ptr cinfo, cd_progress_ptr progress)
GLOBAL(void)
end_progress_monitor(j_common_ptr cinfo)
end_progress_monitor (j_common_ptr cinfo)
{
/* Clear away progress display */
if (cinfo->err->trace_level == 0) {
@@ -83,24 +119,24 @@ end_progress_monitor(j_common_ptr cinfo)
*/
GLOBAL(boolean)
keymatch(char *arg, const char *keyword, int minchars)
keymatch (char * arg, const char * keyword, int minchars)
{
register int ca, ck;
register int nmatched = 0;
while ((ca = *arg++) != '\0') {
if ((ck = *keyword++) == '\0')
return FALSE; /* arg longer than keyword, no good */
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 */
}
@@ -110,14 +146,14 @@ keymatch(char *arg, const char *keyword, int minchars)
*/
GLOBAL(FILE *)
read_stdin(void)
read_stdin (void)
{
FILE *input_file = stdin;
FILE * input_file = stdin;
#ifdef USE_SETMODE /* need to hack file mode? */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdin), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdin\n");
exit(EXIT_FAILURE);
@@ -128,14 +164,14 @@ read_stdin(void)
GLOBAL(FILE *)
write_stdout(void)
write_stdout (void)
{
FILE *output_file = stdout;
FILE * output_file = stdout;
#ifdef USE_SETMODE /* need to hack file mode? */
#ifdef USE_SETMODE /* need to hack file mode? */
setmode(fileno(stdout), O_BINARY);
#endif
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
#ifdef USE_FDOPEN /* need to re-open in binary mode? */
if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) {
fprintf(stderr, "Cannot reopen stdout\n");
exit(EXIT_FAILURE);

164
cdjpeg.h
View File

@@ -1,35 +1,35 @@
/*
* cdjpeg.h
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1994-1997, Thomas G. Lane.
* libjpeg-turbo Modifications:
* Copyright (C) 2017, D. R. Commander.
* 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 */
/*
* 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;
@@ -42,29 +42,24 @@ struct cjpeg_source_struct {
* Object interface for djpeg's output file encoding modules
*/
typedef struct djpeg_dest_struct *djpeg_dest_ptr;
typedef struct djpeg_dest_struct * djpeg_dest_ptr;
struct djpeg_dest_struct {
/* start_output is called after jpeg_start_decompress finishes.
* The color map will be ready at this time, if one is needed.
*/
void (*start_output) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo);
JMETHOD(void, start_output, (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo));
/* Emit the specified number of pixel rows from the buffer. */
void (*put_pixel_rows) (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
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);
/* Re-calculate buffer dimensions based on output dimensions (for use with
partial image decompression.) If this is NULL, then the output format
does not support partial image decompression (BMP and RLE, in particular,
cannot support partial decompression because they use an inversion buffer
to write the image in bottom-up order.) */
void (*calc_buffer_dimensions) (j_decompress_ptr cinfo,
djpeg_dest_ptr dinfo);
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;
@@ -84,74 +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,
boolean use_inversion_array);
EXTERN(djpeg_dest_ptr) jinit_write_bmp(j_decompress_ptr cinfo, boolean is_os2,
boolean use_inversion_array);
EXTERN(cjpeg_source_ptr) jinit_read_gif(j_compress_ptr cinfo);
EXTERN(djpeg_dest_ptr) jinit_write_gif(j_decompress_ptr cinfo);
EXTERN(cjpeg_source_ptr) jinit_read_ppm(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
#define IsExtRGB(cs) \
(cs == JCS_RGB || (cs >= JCS_EXT_RGB && cs <= JCS_EXT_ARGB))
#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

BIN
ci/keys.enc
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187
cjpeg.1
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@@ -1,4 +1,4 @@
.TH CJPEG 1 "18 March 2017"
.TH CJPEG 1 "26 July 2015"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
@@ -46,13 +46,19 @@ compressing a grayscale BMP file, because
.B cjpeg
isn't bright enough to notice whether a BMP file uses only shades of gray.
By saying
.BR \-grayscale,
.BR \-grayscale ,
you'll get a smaller JPEG file that takes less time to process.
.TP
.B \-rgb
Create RGB JPEG file.
Using this switch suppresses the conversion from RGB
colorspace input to the default YCbCr JPEG colorspace.
You can use this switch in combination with the
.BI \-block " N"
switch (see below) for lossless JPEG coding.
See also the
.B \-rgb1
switch below.
.TP
.B \-optimize
Perform optimization of entropy encoding parameters. Without this, default
@@ -67,6 +73,13 @@ decompression are unaffected by
.B \-progressive
Create progressive JPEG file (see below).
.TP
.BI \-scale " M/N"
Scale the output image by a factor M/N. Currently supported scale factors are
M/N with all N from 1 to 16, where M is the destination DCT size, which is 8
by default (see
.BI \-block " N"
switch below).
.TP
.B \-targa
Input file is Targa format. Targa files that contain an "identification"
field will not be automatically recognized by
@@ -85,8 +98,8 @@ reconstructed image: the higher the quality setting, the larger the JPEG file,
and the closer the output image will be to the original input. Normally you
want to use the lowest quality setting (smallest file) that decompresses into
something visually indistinguishable from the original image. For this
purpose the quality setting should generally be between 50 and 95 (the default
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
@@ -157,38 +169,72 @@ Switches for advanced users:
.B \-arithmetic
Use arithmetic coding.
.B Caution:
arithmetic coded JPEG is not yet widely implemented, so many decoders will be
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
.BI \-icc " file"
Embed ICC color management profile contained in the specified file.
.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
@@ -205,16 +251,11 @@ Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, an error will occur.
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.BI \-memdst
Compress to memory instead of a file. This feature was implemented mainly as a
way of testing the in-memory destination manager (jpeg_mem_dest()), but it is
also useful for benchmarking, since it reduces the I/O overhead.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
@@ -223,9 +264,6 @@ give more output. Also, version information is printed at startup.
.B \-debug
Same as
.BR \-verbose .
.TP
.B \-version
Print version information and exit.
.PP
The
.B \-restart
@@ -336,15 +374,10 @@ Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.PP
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

417
cjpeg.c
View File

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

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;
}

182
cmakescripts/BuildPackages.cmake
View File

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

416
cmakescripts/GNUInstallDirs.cmake
View File

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

24
cmakescripts/cmake_uninstall.cmake.in
View File

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

41
cmakescripts/testclean.cmake
View File

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

61
cmyk.h
View File

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

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

365
configure.ac Normal file
View File

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

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:

85
djpeg.1
View File

@@ -1,4 +1,4 @@
.TH DJPEG 1 "13 November 2017"
.TH DJPEG 1 "26 July 2015"
.SH NAME
djpeg \- decompress a JPEG file to an image file
.SH SYNOPSIS
@@ -55,19 +55,23 @@ default options are chosen for highest quality output.) Currently, this is
equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR.
.TP
.B \-grayscale
Force grayscale output even if JPEG file is color. Useful for viewing on
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.
@@ -157,9 +147,6 @@ Ordered dither is only available in
.B \-onepass
mode.
.TP
.BI \-icc " file"
Extract ICC color management profile to the specified file.
.TP
.BI \-map " file"
Quantize to the colors used in the specified image file. This is useful for
producing multiple files with identical color maps, or for forcing a
@@ -171,7 +158,7 @@ and
.BR \-onepass .
.TP
.B \-nosmooth
Use a faster, lower-quality upsampling routine.
Don't use high-quality upsampling.
.TP
.B \-onepass
Use one-pass instead of two-pass color quantization. The one-pass method is
@@ -188,28 +175,11 @@ Set limit for amount of memory to use in processing large images. Value is
in thousands of bytes, or millions of bytes if "M" is attached to the
number. For example,
.B \-max 4m
selects 4000000 bytes. If more space is needed, an error will occur.
selects 4000000 bytes. If more space is needed, temporary files will be used.
.TP
.BI \-outfile " name"
Send output image to the named file, not to standard output.
.TP
.BI \-memsrc
Load input file into memory before decompressing. This feature was implemented
mainly as a way of testing the in-memory source manager (jpeg_mem_src().)
.TP
.BI \-skip " Y0,Y1"
Decompress all rows of the JPEG image except those between Y0 and Y1
(inclusive.) Note that if decompression scaling is being used, then Y0 and Y1
are relative to the scaled image dimensions.
.TP
.BI \-crop " WxH+X+Y"
Decompress only a rectangular subregion of the image, starting at point X,Y
with width W and height H. If necessary, X will be shifted left to the nearest
iMCU boundary, and the width will be increased accordingly. Note that if
decompression scaling is being used, then X, Y, W, and H are relative to the
scaled image dimensions. Currently this option only works with the
PBMPLUS (PPM/PGM), GIF, and Targa output formats.
.TP
.B \-verbose
Enable debug printout. More
.BR \-v 's
@@ -218,9 +188,6 @@ give more output. Also, version information is printed at startup.
.B \-debug
Same as
.BR \-verbose .
.TP
.B \-version
Print version information and exit.
.SH EXAMPLES
.LP
This example decompresses the JPEG file foo.jpg, quantizes it to
@@ -283,14 +250,8 @@ Wallace, Gregory K. "The JPEG Still Picture Compression Standard",
Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.PP
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.

482
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, 2013-2017, 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).
@@ -24,34 +20,29 @@
* don't support pipes. Also, you MUST use the first style if your system
* doesn't do binary I/O to stdin/stdout.
* To simplify script writing, the "-outfile" switch is provided. The syntax
* djpeg [options] -outfile outputfile inputfile
* djpeg [options] -outfile outputfile inputfile
* works regardless of which command line style is used.
*/
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#include "jconfigint.h"
#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
#include "jversion.h" /* for version message */
#ifndef HAVE_STDLIB_H /* <stdlib.h> should declare free() */
extern void free(void *ptr);
#endif
#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"
@@ -67,17 +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;
@@ -92,18 +83,12 @@ static IMAGE_FORMATS requested_fmt;
*/
static const char *progname; /* program name for error messages */
static char *icc_filename; /* for -icc switch */
static char *outfilename; /* for -outfile switch */
boolean memsrc; /* for -memsrc switch */
boolean skip, crop;
JDIMENSION skip_start, skip_end;
JDIMENSION crop_x, crop_y, crop_width, crop_height;
#define INPUT_BUF_SIZE 4096
static const char * progname; /* program name for error messages */
static char * outfilename; /* for -outfile switch */
LOCAL(void)
usage(void)
usage (void)
/* complain about bad command line */
{
fprintf(stderr, "usage: %s [switches] ", progname);
@@ -118,51 +103,49 @@ usage(void)
fprintf(stderr, " -fast Fast, low-quality processing\n");
fprintf(stderr, " -grayscale Force grayscale output\n");
fprintf(stderr, " -rgb Force RGB output\n");
fprintf(stderr, " -rgb565 Force RGB565 output\n");
#ifdef IDCT_SCALING_SUPPORTED
fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n");
#endif
#ifdef BMP_SUPPORTED
fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n",
(DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
(DEFAULT_FMT == FMT_BMP ? " (default)" : ""));
#endif
#ifdef GIF_SUPPORTED
fprintf(stderr, " -gif Select GIF output format%s\n",
(DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
(DEFAULT_FMT == FMT_GIF ? " (default)" : ""));
#endif
#ifdef BMP_SUPPORTED
fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n",
(DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
(DEFAULT_FMT == FMT_OS2 ? " (default)" : ""));
#endif
#ifdef PPM_SUPPORTED
fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n",
(DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
(DEFAULT_FMT == FMT_PPM ? " (default)" : ""));
#endif
#ifdef RLE_SUPPORTED
fprintf(stderr, " -rle Select Utah RLE output format%s\n",
(DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
(DEFAULT_FMT == FMT_RLE ? " (default)" : ""));
#endif
#ifdef TARGA_SUPPORTED
fprintf(stderr, " -targa Select Targa output format%s\n",
(DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
(DEFAULT_FMT == FMT_TARGA ? " (default)" : ""));
#endif
fprintf(stderr, "Switches for advanced users:\n");
#ifdef DCT_ISLOW_SUPPORTED
fprintf(stderr, " -dct int Use integer DCT method%s\n",
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : ""));
#endif
#ifdef DCT_IFAST_SUPPORTED
fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n",
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_IFAST ? " (default)" : ""));
#endif
#ifdef DCT_FLOAT_SUPPORTED
fprintf(stderr, " -dct float Use floating-point DCT method%s\n",
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
(JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : ""));
#endif
fprintf(stderr, " -dither fs Use F-S dithering (default)\n");
fprintf(stderr, " -dither none Don't use dithering in quantization\n");
fprintf(stderr, " -dither ordered Use ordered dither (medium speed, quality)\n");
fprintf(stderr, " -icc FILE Extract ICC profile to FILE\n");
#ifdef QUANT_2PASS_SUPPORTED
fprintf(stderr, " -map FILE Map to colors used in named image file\n");
#endif
@@ -172,22 +155,14 @@ usage(void)
#endif
fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n");
fprintf(stderr, " -outfile name Specify name for output file\n");
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
fprintf(stderr, " -memsrc Load input file into memory before decompressing\n");
#endif
fprintf(stderr, " -skip Y0,Y1 Decompress all rows except those between Y0 and Y1 (inclusive)\n");
fprintf(stderr, " -crop WxH+X+Y Decompress only a rectangular subregion of the image\n");
fprintf(stderr, " [requires PBMPLUS (PPM/PGM), GIF, or Targa output format]\n");
fprintf(stderr, " -verbose or -debug Emit debug output\n");
fprintf(stderr, " -version Print version information and exit\n");
exit(EXIT_FAILURE);
}
LOCAL(int)
parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
parse_switches (j_decompress_ptr cinfo, int argc, char **argv,
int last_file_arg_seen, boolean for_real)
/* Parse optional switches.
* Returns argv[] index of first file-name argument (== argc if none).
* Any file names with indexes <= last_file_arg_seen are ignored;
@@ -198,15 +173,11 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
*/
{
int argn;
char *arg;
char * arg;
/* Set up default JPEG parameters. */
requested_fmt = DEFAULT_FMT; /* set default output file format */
icc_filename = NULL;
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 */
@@ -216,81 +187,73 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
if (*arg != '-') {
/* Not a switch, must be a file name argument */
if (argn <= last_file_arg_seen) {
outfilename = NULL; /* -outfile applies to just one input file */
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. */
/* On first -d, print version identification */
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;
if (! printed_version) {
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;
if (! cinfo->quantize_colors) /* don't override an earlier -colors */
cinfo->desired_number_of_colors = 216;
cinfo->dct_method = JDCT_FASTEST;
cinfo->do_fancy_upsampling = FALSE;
@@ -298,43 +261,31 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
/* GIF output format. */
requested_fmt = FMT_GIF;
} else if (keymatch(arg, "grayscale", 2) ||
keymatch(arg, "greyscale", 2)) {
} else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) {
/* Force monochrome output. */
cinfo->out_color_space = JCS_GRAYSCALE;
} else if (keymatch(arg, "rgb", 2)) {
} else if (keymatch(arg, "rgb", 3)) {
/* Force RGB output. */
cinfo->out_color_space = JCS_RGB;
} else if (keymatch(arg, "rgb565", 2)) {
/* Force RGB565 output. */
cinfo->out_color_space = JCS_RGB565;
} else if (keymatch(arg, "icc", 1)) {
/* Set ICC filename. */
if (++argn >= argc) /* advance to next argument */
usage();
icc_filename = argv[argn];
jpeg_save_markers(cinfo, JPEG_APP0 + 2, 0xFFFF);
} else if (keymatch(arg, "map", 3)) {
/* Quantize to a color map taken from an input file. */
if (++argn >= argc) /* advance to next argument */
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
}
@@ -343,16 +294,16 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
long lval;
char ch = 'x';
if (++argn >= argc) /* advance to next argument */
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)) {
@@ -365,19 +316,9 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
} else if (keymatch(arg, "outfile", 4)) {
/* Set output file name. */
if (++argn >= argc) /* advance to next argument */
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. */
@@ -387,42 +328,24 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
/* RLE output format. */
requested_fmt = FMT_RLE;
} else if (keymatch(arg, "scale", 2)) {
} else if (keymatch(arg, "scale", 1)) {
/* Scale the output image by a fraction M/N. */
if (++argn >= argc) /* advance to next argument */
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) */
}
@@ -434,13 +357,13 @@ parse_switches(j_decompress_ptr cinfo, int argc, char **argv,
*/
LOCAL(unsigned int)
jpeg_getc(j_decompress_ptr cinfo)
jpeg_getc (j_decompress_ptr cinfo)
/* Read next byte */
{
struct jpeg_source_mgr *datasrc = cinfo->src;
struct jpeg_source_mgr * datasrc = cinfo->src;
if (datasrc->bytes_in_buffer == 0) {
if (!(*datasrc->fill_input_buffer) (cinfo))
if (! (*datasrc->fill_input_buffer) (cinfo))
ERREXIT(cinfo, JERR_CANT_SUSPEND);
}
datasrc->bytes_in_buffer--;
@@ -449,23 +372,23 @@ jpeg_getc(j_decompress_ptr cinfo)
METHODDEF(boolean)
print_text_marker(j_decompress_ptr cinfo)
print_text_marker (j_decompress_ptr cinfo)
{
boolean traceit = (cinfo->err->trace_level >= 1);
long length;
INT32 length;
unsigned int ch;
unsigned int lastch = 0;
length = jpeg_getc(cinfo) << 8;
length += jpeg_getc(cinfo);
length -= 2; /* discount the length word itself */
length -= 2; /* discount the length word itself */
if (traceit) {
if (cinfo->unread_marker == JPEG_COM)
fprintf(stderr, "Comment, length %ld:\n", (long)length);
else /* assume it is an APPn otherwise */
fprintf(stderr, "Comment, length %ld:\n", (long) length);
else /* assume it is an APPn otherwise */
fprintf(stderr, "APP%d, length %ld:\n",
cinfo->unread_marker - JPEG_APP0, (long)length);
cinfo->unread_marker - JPEG_APP0, (long) length);
}
while (--length >= 0) {
@@ -477,16 +400,16 @@ print_text_marker(j_decompress_ptr cinfo)
* Newlines in CR, CR/LF, or LF form will be printed as one newline.
*/
if (ch == '\r') {
fprintf(stderr, "\n");
fprintf(stderr, "\n");
} else if (ch == '\n') {
if (lastch != '\r')
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;
}
@@ -504,7 +427,7 @@ print_text_marker(j_decompress_ptr cinfo)
*/
int
main(int argc, char **argv)
main (int argc, char **argv)
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
@@ -513,10 +436,8 @@ main(int argc, char **argv)
#endif
int file_index;
djpeg_dest_ptr dest_mgr = NULL;
FILE *input_file;
FILE *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. */
@@ -526,7 +447,7 @@ main(int argc, char **argv)
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "djpeg"; /* in case C library doesn't provide it */
progname = "djpeg"; /* in case C library doesn't provide it */
/* Initialize the JPEG decompression object with default error handling. */
cinfo.err = jpeg_std_error(&jerr);
@@ -540,10 +461,15 @@ main(int argc, char **argv)
* APP12 is used by some digital camera makers for textual info,
* so we provide the ability to display it as text.
* If you like, additional APPn marker types can be selected for display,
* but don't try to override APP0 or APP14 this way (see libjpeg.txt).
* but don't try to override APP0 or APP14 this way (see libjpeg.doc).
*/
jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker);
jpeg_set_marker_processor(&cinfo, JPEG_APP0 + 12, print_text_marker);
jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker);
/* Now safe to enable signal catcher. */
#ifdef NEED_SIGNAL_CATCHER
enable_signal_catcher((j_common_ptr) &cinfo);
#endif
/* Scan command line to find file names. */
/* It is convenient to use just one switch-parsing routine, but the switch
@@ -558,22 +484,22 @@ main(int argc, char **argv)
#ifdef TWO_FILE_COMMANDLINE
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc - 2) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
progname);
usage();
}
outfilename = argv[file_index + 1];
outfilename = argv[file_index+1];
} else {
if (file_index != argc - 1) {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
progname);
usage();
}
}
#else
/* Unix style: expect zero or one file name */
if (file_index < argc - 1) {
if (file_index < argc-1) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
@@ -602,37 +528,14 @@ main(int argc, char **argv)
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr)&cinfo, &progress);
start_progress_monitor((j_common_ptr) &cinfo, &progress);
#endif
/* Specify data source for decompression */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
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);
(void) jpeg_read_header(&cinfo, TRUE);
/* Adjust default decompression parameters by re-parsing the options */
file_index = parse_switches(&cinfo, argc, argv, 0, TRUE);
@@ -643,10 +546,10 @@ main(int argc, char **argv)
switch (requested_fmt) {
#ifdef BMP_SUPPORTED
case FMT_BMP:
dest_mgr = jinit_write_bmp(&cinfo, FALSE, TRUE);
dest_mgr = jinit_write_bmp(&cinfo, FALSE);
break;
case FMT_OS2:
dest_mgr = jinit_write_bmp(&cinfo, TRUE, TRUE);
dest_mgr = jinit_write_bmp(&cinfo, TRUE);
break;
#endif
#ifdef GIF_SUPPORTED
@@ -676,91 +579,16 @@ main(int argc, char **argv)
dest_mgr->output_file = output_file;
/* Start decompressor */
(void)jpeg_start_decompress(&cinfo);
(void) jpeg_start_decompress(&cinfo);
/* Skip rows */
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);
if (dest_mgr->calc_buffer_dimensions)
(*dest_mgr->calc_buffer_dimensions) (&cinfo, dest_mgr);
else
ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT);
/* Write output file header. This is a hack to ensure that the destination
* manager creates an output image of the proper size.
*/
tmp = cinfo.output_height;
cinfo.output_height = crop_height;
(*dest_mgr->start_output) (&cinfo, dest_mgr);
cinfo.output_height = tmp;
/* Process data */
jpeg_skip_scanlines(&cinfo, crop_y);
while (cinfo.output_scanline < crop_y + crop_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
jpeg_skip_scanlines(&cinfo, cinfo.output_height - crop_y - crop_height);
/* Normal full-image decompress */
} else {
/* Write output file header */
(*dest_mgr->start_output) (&cinfo, dest_mgr);
/* Process data */
while (cinfo.output_scanline < cinfo.output_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
/* Process data */
while (cinfo.output_scanline < cinfo.output_height) {
num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer,
dest_mgr->buffer_height);
(*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines);
}
#ifdef PROGRESS_REPORT
@@ -770,35 +598,12 @@ main(int argc, char **argv)
progress.pub.completed_passes = progress.pub.total_passes;
#endif
if (icc_filename != NULL) {
FILE *icc_file;
JOCTET *icc_profile;
unsigned int icc_len;
if ((icc_file = fopen(icc_filename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s\n", progname, icc_filename);
exit(EXIT_FAILURE);
}
if (jpeg_read_icc_profile(&cinfo, &icc_profile, &icc_len)) {
if (fwrite(icc_profile, icc_len, 1, icc_file) < 1) {
fprintf(stderr, "%s: can't read ICC profile from %s\n", progname,
icc_filename);
free(icc_profile);
fclose(icc_file);
exit(EXIT_FAILURE);
}
free(icc_profile);
fclose(icc_file);
} else if (cinfo.err->msg_code != JWRN_BOGUS_ICC)
fprintf(stderr, "%s: no ICC profile data in JPEG file\n", progname);
}
/* Finish decompression and release memory.
* I must do it in this order because output module has allocated memory
* of lifespan JPOOL_IMAGE; it needs to finish before releasing memory.
*/
(*dest_mgr->finish_output) (&cinfo, dest_mgr);
(void)jpeg_finish_decompress(&cinfo);
(void) jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
/* Close files, if we opened them */
@@ -808,13 +613,10 @@ main(int argc, char **argv)
fclose(output_file);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr)&cinfo);
end_progress_monitor((j_common_ptr) &cinfo);
#endif
if (memsrc && inbuffer != NULL)
free(inbuffer);
/* All done. */
exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
return 0; /* suppress no-return-value warnings */
}

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<div class="textblock">Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:</div><ul>
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: <a class="el" href="structtjtransform.html#a43ee1bcdd2a8d7249a756774f78793c1">tjtransform</a>
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